diff --git a/bsp/dm365/SConscript b/bsp/dm365/SConscript new file mode 100644 index 0000000000000000000000000000000000000000..fe0ae941ae9a759ae478de901caec1c961e56af8 --- /dev/null +++ b/bsp/dm365/SConscript @@ -0,0 +1,14 @@ +# for module compiling +import os +Import('RTT_ROOT') + +cwd = str(Dir('#')) +objs = [] +list = os.listdir(cwd) + +for d in list: + path = os.path.join(cwd, d) + if os.path.isfile(os.path.join(path, 'SConscript')): + objs = objs + SConscript(os.path.join(d, 'SConscript')) + +Return('objs') diff --git a/bsp/dm365/SConstruct b/bsp/dm365/SConstruct new file mode 100644 index 0000000000000000000000000000000000000000..fc6cffa67c55430db8a3e4d4de0662a128408e50 --- /dev/null +++ b/bsp/dm365/SConstruct @@ -0,0 +1,33 @@ +import os +import sys +import rtconfig + +if os.getenv('RTT_ROOT'): + RTT_ROOT = os.getenv('RTT_ROOT') +else: + RTT_ROOT = os.path.normpath(os.getcwd() + '/../..') + +sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')] +from building import * + +TARGET = 'rtthread-dm365.' + rtconfig.TARGET_EXT + +env = Environment(tools = ['mingw'], + AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS, + CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS, + AR = rtconfig.AR, ARFLAGS = '-rc', + LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS) +env.PrependENVPath('PATH', rtconfig.EXEC_PATH) + +Export('RTT_ROOT') +Export('rtconfig') + +# prepare building environment +objs = PrepareBuilding(env, RTT_ROOT) + +# libc testsuite +objs = objs + SConscript(RTT_ROOT + '/examples/libc/SConscript', variant_dir='build/examples/libc', duplicate=0) + +# make a building +DoBuilding(TARGET, objs) + diff --git a/bsp/dm365/applications/SConscript b/bsp/dm365/applications/SConscript new file mode 100644 index 0000000000000000000000000000000000000000..85d211cf16d94cd5f2d9e1c019174fc19df12f38 --- /dev/null +++ b/bsp/dm365/applications/SConscript @@ -0,0 +1,11 @@ +import rtconfig +Import('RTT_ROOT') +from building import * + +cwd = GetCurrentDir() +src = Glob('*.c') + +CPPPATH = [cwd, str(Dir('#'))] +group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH) + +Return('group') diff --git a/bsp/dm365/applications/application.c b/bsp/dm365/applications/application.c new file mode 100644 index 0000000000000000000000000000000000000000..7582bc2aaa2e350bb3766819b6d3b7121905278f --- /dev/null +++ b/bsp/dm365/applications/application.c @@ -0,0 +1,235 @@ +/* + * File : application.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + + +/** + * @addtogroup dm365 + */ +/*@{*/ + +#include +//#include + +#ifdef RT_USING_DFS +/* dfs init */ +#include +/* dfs filesystem:ELM FatFs filesystem init */ +#include +/* dfs Filesystem APIs */ +#include +#ifdef RT_USING_DFS_UFFS +/* dfs filesystem:UFFS filesystem init */ +#include +#endif +#endif + +#if defined(RT_USING_DFS_DEVFS) +#include +#endif + +#ifdef RT_USING_SDIO +#include + +#endif + +#ifdef RT_USING_LWIP +#include +#endif + +#ifdef RT_USING_SPI +#include +#endif + +#ifdef RT_USING_LED +#include "led.h" +#endif + +#define RT_INIT_THREAD_STACK_SIZE (2*1024) + +#ifdef RT_USING_DFS_ROMFS +#include +#endif + +void rt_init_thread_entry(void* parameter) +{ + platform_init(); + +/* Filesystem Initialization */ +#ifdef RT_USING_DFS + { + /* init the device filesystem */ + dfs_init(); + +#if defined(RT_USING_DFS_ELMFAT) + /* init the elm chan FatFs filesystam*/ + elm_init(); +#endif + +#if defined(RT_USING_DFS_ROMFS) + dfs_romfs_init(); + if (dfs_mount(RT_NULL, "/rom", "rom", 0, &romfs_root) == 0) + { + rt_kprintf("ROM File System initialized!\n"); + } + else + rt_kprintf("ROM File System initialzation failed!\n"); +#endif + +#if defined(RT_USING_DFS_DEVFS) + devfs_init(); + if (dfs_mount(RT_NULL, "/dev", "devfs", 0, 0) == 0) + rt_kprintf("Device File System initialized!\n"); + else + rt_kprintf("Device File System initialzation failed!\n"); + + #ifdef RT_USING_NEWLIB + /* init libc */ + libc_system_init(RT_CONSOLE_DEVICE_NAME); + #endif +#endif + +#if defined(RT_USING_DFS_UFFS) + { + /* init the uffs filesystem */ + dfs_uffs_init(); + + /* mount flash device as flash directory */ + if(dfs_mount("nand0", "/nand0", "uffs", 0, 0) == 0) + rt_kprintf("UFFS File System initialized!\n"); + else + rt_kprintf("UFFS File System initialzation failed!\n"); + } +#endif + +#ifdef RT_USING_I2C + { + rt_i2c_core_init(); + davinci_i2c_init("I2C1"); + } +#endif + +#ifdef RT_USING_SPI + { + rt_hw_spi_init(); + } +#endif + +#ifdef RT_USING_SDIO + rt_mmcsd_core_init(); + rt_mmcsd_blk_init(); + rt_hw_mmcsd_init(); + rt_thread_delay(RT_TICK_PER_SECOND*2); + /* mount sd card fat partition 1 as root directory */ + if (dfs_mount("sd0", "/", "elm", 0, 0) == 0) + { + rt_kprintf("File System initialized!\n"); + } + else + rt_kprintf("File System initialzation failed!%d\n", rt_get_errno()); +#endif + } +#endif + +#ifdef RT_USING_LWIP + { + /* register ethernetif device */ + eth_system_device_init(); + rt_hw_davinci_emac_init(); + /* init lwip system */ + lwip_system_init(); + } +#endif + +} + + +void rt_led_thread_entry(void* parameter) +{ + while(1) + { + /* light on leds for one second */ + rt_thread_delay(100); + + /* light off leds for one second */ + rt_thread_delay(100); + } +} + +int rt_application_init() +{ + rt_thread_t init_thread; +#ifdef RT_USING_LED + rt_thread_t led_thread; +#endif + +#if (RT_THREAD_PRIORITY_MAX == 32) + init_thread = rt_thread_create("init", + rt_init_thread_entry, RT_NULL, + RT_INIT_THREAD_STACK_SIZE, 8, 20); +#ifdef RT_USING_LED + led_thread = rt_thread_create("led", + rt_led_thread_entry, RT_NULL, + 512, 20, 20); +#endif +#else + init_thread = rt_thread_create("init", + rt_init_thread_entry, RT_NULL, + RT_INIT_THREAD_STACK_SIZE, 80, 20); +#ifdef RT_USING_LED + led_thread = rt_thread_create("led", + rt_led_thread_entry, RT_NULL, + 512, 200, 20); +#endif +#endif + + if (init_thread != RT_NULL) + rt_thread_startup(init_thread); +#ifdef RT_USING_LED + if(led_thread != RT_NULL) + rt_thread_startup(led_thread); +#endif + + return 0; +} + +/* NFSv3 Initialization */ +#if defined(RT_USING_DFS) && defined(RT_USING_LWIP) && defined(RT_USING_DFS_NFS) +#include +void nfs_start(void) +{ + nfs_init(); + + if (dfs_mount(RT_NULL, "/nfs", "nfs", 0, RT_NFS_HOST_EXPORT) == 0) + { + rt_kprintf("NFSv3 File System initialized!\n"); + } + else + rt_kprintf("NFSv3 File System initialzation failed!\n"); +} + +#include "finsh.h" +FINSH_FUNCTION_EXPORT(nfs_start, start net filesystem); +#endif + +/*@}*/ diff --git a/bsp/dm365/applications/board.c b/bsp/dm365/applications/board.c new file mode 100644 index 0000000000000000000000000000000000000000..779217c8d00a46f67b59206fa667d87cac1ef021 --- /dev/null +++ b/bsp/dm365/applications/board.c @@ -0,0 +1,116 @@ +/* + * File : board.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + + +#include +#include +#include +#include "board.h" + +/** + * @addtogroup dm365 + */ +/*@{*/ + +extern void rt_hw_clock_init(void); +extern void rt_hw_uart_init(void); + +static struct mem_desc dm365_mem_desc[] = { + { 0x80000000, 0x88000000-1, 0x80000000, SECT_RW_CB, 0, SECT_MAPPED }, /* 128M cached SDRAM memory */ + { 0xA0000000, 0xA8000000-1, 0x80000000, SECT_RW_NCNB, 0, SECT_MAPPED }, /* 128M No cached SDRAM memory */ + { 0xFFFF0000, 0xFFFF1000-1, 0x80000000, SECT_TO_PAGE, PAGE_RO_CB, PAGE_MAPPED }, /* isr vector table */ + { 0x01C00000, 0x02000000-1, 0x01C00000, SECT_RW_NCNB, 0, SECT_MAPPED }, /* CFG BUS peripherals */ + { 0x02000000, 0x0A000000-1, 0x02000000, SECT_RW_NCNB, 0, SECT_MAPPED }, /* AEMIF */ +}; + + +/** + * This function will handle rtos timer + */ +void rt_timer_handler(int vector, void *param) +{ + rt_tick_increase(); +} + +/** + * This function will init timer0 for system ticks + */ + void rt_hw_timer_init() + { + /* timer0, input clocks 24MHz */ + volatile timer_regs_t *regs = + (volatile timer_regs_t*)DAVINCI_TIMER1_BASE;//DAVINCI_TIMER0_BASE; + + /*disable timer*/ + regs->tcr &= ~(0x3UL << 6); + + //TIMMODE 32BIT UNCHAINED MODE + regs->tgcr |=(0x1UL << 2); + + /*not in reset timer */ + regs->tgcr |= (0x1UL << 0); + + //regs->tgcr &= ~(0x1UL << 1); + + /* set Period Registers */ + regs->prd12 = 24000000/RT_TICK_PER_SECOND; + regs->tim12 = 0; + + /* Set enable mode */ + regs->tcr |= (0x2UL << 6); //period mode + + + /* install interrupt handler */ + rt_hw_interrupt_install(IRQ_DM365_TINT2, rt_timer_handler, + RT_NULL, "timer1_12");//IRQ_DM365_TINT0_TINT12 + rt_hw_interrupt_umask(IRQ_DM365_TINT2);//IRQ_DM365_TINT2 + + } + +/** + * This function will init dm365 board + */ +void rt_hw_board_init() +{ + psc_change_state(DAVINCI_DM365_LPSC_TIMER0, 3); + psc_change_state(DAVINCI_DM365_LPSC_TIMER1, 3); + /* initialize the system clock */ + //rt_hw_clock_init(); + davinci_clk_init(); + + /* initialize uart */ + rt_hw_uart_init(); +#ifdef RT_USING_CONSOLE + rt_console_set_device(RT_CONSOLE_DEVICE_NAME); +#endif + + /* initialize mmu */ + rt_hw_mmu_init(dm365_mem_desc, sizeof(dm365_mem_desc)/sizeof(dm365_mem_desc[0])); + + /* initialize timer0 */ + rt_hw_timer_init(); + +} + +/*@}*/ diff --git a/bsp/dm365/applications/board.h b/bsp/dm365/applications/board.h new file mode 100644 index 0000000000000000000000000000000000000000..9eb29d9522026217a72f52a875c245a888830483 --- /dev/null +++ b/bsp/dm365/applications/board.h @@ -0,0 +1,33 @@ +/* + * File : board.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + + +#ifndef __BOARD_H__ +#define __BOARD_H__ + +#include + +void rt_hw_board_init(void); + +#endif diff --git a/bsp/dm365/applications/startup.c b/bsp/dm365/applications/startup.c new file mode 100644 index 0000000000000000000000000000000000000000..f4c02d17d713528662c30afdb6223227a465ad00 --- /dev/null +++ b/bsp/dm365/applications/startup.c @@ -0,0 +1,148 @@ +/* + * File : startup.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#include +#include + +#include +#ifdef RT_USING_FINSH +#include +#endif + +extern void rt_hw_interrupt_init(void); +extern void rt_hw_board_init(void); +extern void rt_serial_init(void); +extern void rt_system_timer_init(void); +extern void rt_system_scheduler_init(void); +extern void rt_thread_idle_init(void); +extern void rt_hw_cpu_icache_enable(void); +extern void rt_show_version(void); +extern void rt_system_heap_init(void*, void*); +extern void rt_hw_finsh_init(void); +extern void rt_application_init(void); + +/** + * @addtogroup dm365 + */ + +/*@{*/ +#if defined(__CC_ARM) + extern int Image$$ER_ZI$$ZI$$Base; + extern int Image$$ER_ZI$$ZI$$Length; + extern int Image$$ER_ZI$$ZI$$Limit; +#elif (defined (__GNUC__)) + rt_uint8_t _irq_stack_start[1024]; + rt_uint8_t _fiq_stack_start[1024]; + rt_uint8_t _undefined_stack_start[512]; + rt_uint8_t _abort_stack_start[512]; + rt_uint8_t _svc_stack_start[1024] SECTION(".nobss"); + extern unsigned char __bss_start; + extern unsigned char __bss_end; +#endif + +#ifdef RT_USING_FINSH +extern void finsh_system_init(void); +#endif + + +/** + * This function will startup RT-Thread RTOS. + */ +void rtthread_startup(void) +{ + /* enable cpu cache */ + //rt_hw_cpu_icache_enable(); + //rt_hw_cpu_dcache_enable(); + + /* initialize hardware interrupt */ + rt_hw_interrupt_init(); + + /* initialize board */ + rt_hw_board_init(); + + /* show version */ + rt_show_version(); + + /* initialize tick */ + rt_system_tick_init(); + + /* initialize kernel object */ + rt_system_object_init(); + + /* initialize timer system */ + rt_system_timer_init(); + + /* initialize heap memory system */ +#ifdef __CC_ARM + rt_system_heap_init((void*)&Image$$ER_ZI$$ZI$$Limit, (void*)0x88000000); +#else + rt_system_heap_init((void*)&__bss_end, (void*)0x88000000); +#endif + +#ifdef RT_USING_MODULE + /* initialize module system*/ + rt_system_module_init(); +#endif + + /* initialize scheduler system */ + rt_system_scheduler_init(); + + /* initialize application */ + rt_application_init(); + +#ifdef RT_USING_FINSH + /* initialize finsh */ + finsh_system_init(); +#ifdef RT_USING_DEVICE + finsh_set_device(RT_CONSOLE_DEVICE_NAME); +#endif +#endif + + /* initialize system timer thread */ + rt_system_timer_thread_init(); + + /* initialize idle thread */ + rt_thread_idle_init(); + + /* start scheduler */ + rt_system_scheduler_start(); + + /* never reach here */ + return ; +} + +int main(void) +{ + rt_uint32_t RT_UNUSED level; + + /* disable interrupt first */ + level = rt_hw_interrupt_disable(); + + /* startup RT-Thread RTOS */ + rtthread_startup(); + + return 0; +} + +/*@}*/ diff --git a/bsp/dm365/dm365_ram.ld b/bsp/dm365/dm365_ram.ld new file mode 100644 index 0000000000000000000000000000000000000000..2a47d3a1895c6d5ae52f89149ad8efca2b38d135 --- /dev/null +++ b/bsp/dm365/dm365_ram.ld @@ -0,0 +1,85 @@ +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x80000000; + + . = ALIGN(4); + .text : + { + *(.init) + *(.text) + *(.gnu.linkonce.t*) + + /* section information for finsh shell */ + . = ALIGN(4); + __fsymtab_start = .; + KEEP(*(FSymTab)) + __fsymtab_end = .; + . = ALIGN(4); + __vsymtab_start = .; + KEEP(*(VSymTab)) + __vsymtab_end = .; + . = ALIGN(4); + + /* section information for modules */ + . = ALIGN(4); + __rtmsymtab_start = .; + KEEP(*(RTMSymTab)) + __rtmsymtab_end = .; + } + + . = ALIGN(4); + .rodata : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r*) *(.eh_frame) } + + . = ALIGN(4); + .ctors : + { + PROVIDE(__ctors_start__ = .); + KEEP(*(SORT(.ctors.*))) + KEEP(*(.ctors)) + PROVIDE(__ctors_end__ = .); + } + + .dtors : + { + PROVIDE(__dtors_start__ = .); + KEEP(*(SORT(.dtors.*))) + KEEP(*(.dtors)) + PROVIDE(__dtors_end__ = .); + } + + . = ALIGN(4); + .data : + { + *(.data) + *(.data.*) + *(.gnu.linkonce.d*) + } + + . = ALIGN(4); + .nobss : { *(.nobss) } + + + . = ALIGN(4); + __bss_start = .; + .bss : { *(.bss) } + __bss_end = .; + + /* stabs debugging sections. */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_info 0 : { *(.debug_info) } + .debug_line 0 : { *(.debug_line) } + .debug_pubnames 0 : { *(.debug_pubnames) } + .debug_aranges 0 : { *(.debug_aranges) } + + _end = .; +} diff --git a/bsp/dm365/drivers/SConscript b/bsp/dm365/drivers/SConscript new file mode 100644 index 0000000000000000000000000000000000000000..19f4c5c77c4c7cc48d23c847050e7bc86c6e13e8 --- /dev/null +++ b/bsp/dm365/drivers/SConscript @@ -0,0 +1,31 @@ +Import('RTT_ROOT') +from building import * + +cwd = GetCurrentDir() +#src_drv = [''] + +# The set of source files associated with this SConscript file. +path = [cwd] + +src = Split(""" +davinci_serial.c +""") + +if GetDepend('RT_USING_GPIO'): + src += ['gpio.c'] + +if GetDepend('RT_USING_I2C'): + src += ['i2c-davinci.c'] + +if GetDepend('RT_USING_SDIO'): + src += ['mmcsd.c'] + +if GetDepend('RT_USING_SPI'): + src += ['spi-davinci.c'] + +if GetDepend('RT_USING_LWIP'): + src += ['davinci_emac.c'] + +group = DefineGroup('Startup', src, depend = [''], CPPPATH = path) + +Return('group') diff --git a/bsp/dm365/drivers/davinci_emac.c b/bsp/dm365/drivers/davinci_emac.c new file mode 100644 index 0000000000000000000000000000000000000000..495785f1fa54307c749d316e950d679e341ec11a --- /dev/null +++ b/bsp/dm365/drivers/davinci_emac.c @@ -0,0 +1,1782 @@ +/* + * File : davinci_emac.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + + +#include +#include +#include +#include +#include "davinci_emac.h" + +#define MMU_NOCACHE_ADDR(a) ((rt_uint32_t)a | (1UL<<29)) +#define CACHE_LINE_SIZE 32 + +extern void mmu_clean_dcache(rt_uint32_t buffer, rt_uint32_t size); +extern void mmu_invalidate_dcache(rt_uint32_t buffer, rt_uint32_t size); + +/* EMAC internal utility function */ +static inline rt_uint32_t emac_virt_to_phys(void *addr) +{ + return addr; +} + +static inline rt_uint32_t virt_to_phys(void *addr) +{ + return addr; +} + +/* Cache macros - Packet buffers would be from pbuf pool which is cached */ +#define EMAC_VIRT_NOCACHE(addr) (addr) +#define EMAC_CACHE_INVALIDATE(addr, size) \ + mmu_invalidate_dcache(addr, size) +#define EMAC_CACHE_WRITEBACK(addr, size) \ + mmu_clean_dcache(addr, size) +#define EMAC_CACHE_WRITEBACK_INVALIDATE(addr, size) \ + mmu_clean_invalidated_dcache(addr, size) + +/* DM644x does not have BD's in cached memory - so no cache functions */ +#define BD_CACHE_INVALIDATE(addr, size) +#define BD_CACHE_WRITEBACK(addr, size) +#define BD_CACHE_WRITEBACK_INVALIDATE(addr, size) + + +static struct emac_priv davinci_emac_device; +static struct rt_semaphore sem_ack; + +/* clock frequency for EMAC */ +static unsigned long emac_bus_frequency; +static unsigned long mdio_max_freq; + +#define EMAC_AUTONEG_TIMEOUT 5000000 +#define EMAC_LINK_TIMEOUT 500000 + + +/* EMAC TX Host Error description strings */ +static char *emac_txhost_errcodes[16] = { + "No error", "SOP error", "Ownership bit not set in SOP buffer", + "Zero Next Buffer Descriptor Pointer Without EOP", + "Zero Buffer Pointer", "Zero Buffer Length", "Packet Length Error", + "Reserved", "Reserved", "Reserved", "Reserved", "Reserved", + "Reserved", "Reserved", "Reserved", "Reserved" +}; + +/* EMAC RX Host Error description strings */ +static char *emac_rxhost_errcodes[16] = { + "No error", "Reserved", "Ownership bit not set in input buffer", + "Reserved", "Zero Buffer Pointer", "Reserved", "Reserved", + "Reserved", "Reserved", "Reserved", "Reserved", "Reserved", + "Reserved", "Reserved", "Reserved", "Reserved" +}; + +#define emac_read(reg) davinci_readl(priv->emac_base + (reg)) +#define emac_write(reg, val) davinci_writel(val, priv->emac_base + (reg)) + +#define emac_ctrl_read(reg) davinci_readl((priv->ctrl_base + (reg))) +#define emac_ctrl_write(reg, val) davinci_writel(val, (priv->ctrl_base + (reg))) + +#define emac_mdio_read(reg) davinci_readl(priv->mdio_base + (reg)) +#define emac_mdio_write(reg, val) davinci_writel(val, (priv->mdio_base + (reg))) + +static void emac_int_enable(struct emac_priv *priv); +static void emac_int_disable(struct emac_priv *priv); +static int emac_init_txch(struct emac_priv *priv, rt_uint32_t ch); + +/* PHY/MII bus related */ + +/* Wait until mdio is ready for next command */ +#define MDIO_WAIT_FOR_USER_ACCESS\ + while ((emac_mdio_read((MDIO_USERACCESS(0))) &\ + MDIO_USERACCESS_GO) != 0) + +static int emac_mii_read(struct emac_priv *priv, int phy_id, int phy_reg) +{ + unsigned int phy_data = 0; + unsigned int phy_control; + + /* Wait until mdio is ready for next command */ + MDIO_WAIT_FOR_USER_ACCESS; + + phy_control = (MDIO_USERACCESS_GO | + MDIO_USERACCESS_READ | + ((phy_reg << 21) & MDIO_USERACCESS_REGADR) | + ((phy_id << 16) & MDIO_USERACCESS_PHYADR) | + (phy_data & MDIO_USERACCESS_DATA)); + emac_mdio_write(MDIO_USERACCESS(0), phy_control); + + /* Wait until mdio is ready for next command */ + MDIO_WAIT_FOR_USER_ACCESS; + + return emac_mdio_read(MDIO_USERACCESS(0)) & MDIO_USERACCESS_DATA; + +} + +static int emac_mii_write(struct emac_priv *priv, int phy_id, + int phy_reg, rt_uint16_t phy_data) +{ + + unsigned int control; + + /* until mdio is ready for next command */ + MDIO_WAIT_FOR_USER_ACCESS; + + control = (MDIO_USERACCESS_GO | + MDIO_USERACCESS_WRITE | + ((phy_reg << 21) & MDIO_USERACCESS_REGADR) | + ((phy_id << 16) & MDIO_USERACCESS_PHYADR) | + (phy_data & MDIO_USERACCESS_DATA)); + emac_mdio_write(MDIO_USERACCESS(0), control); + + return 0; +} + +static int emac_mii_reset(struct emac_priv *priv) +{ + unsigned int clk_div; + int mdio_bus_freq = emac_bus_frequency; + + if (mdio_max_freq && mdio_bus_freq) + clk_div = ((mdio_bus_freq / mdio_max_freq) - 1); + else + clk_div = 0xFF; + + clk_div &= MDIO_CONTROL_CLKDIV; + + /* Set enable and clock divider in MDIOControl */ + emac_mdio_write(MDIO_CONTROL, (clk_div | MDIO_CONTROL_ENABLE)); + + return 0; + +} + + + +/* Duplex, half or full. */ +#define DUPLEX_HALF 0x00 +#define DUPLEX_FULL 0x01 + +static void udelay(rt_uint32_t us) +{ + rt_uint32_t len; + for (;us > 0; us --) + for (len = 0; len < 10; len++ ); +} + +static void davinci_emac_phy_reset(rt_device_t dev) +{ + int i; + rt_uint16_t status, adv; + struct emac_priv *priv = dev->user_data;; + + adv = ADVERTISE_CSMA | ADVERTISE_ALL; + emac_mii_write(priv, priv->phy_addr, MII_ADVERTISE, adv); + rt_kprintf("%s: Starting autonegotiation...\n", dev->parent.name); + emac_mii_write(priv, priv->phy_addr, MII_BMCR, (BMCR_ANENABLE + | BMCR_ANRESTART)); + + for (i = 0; i < EMAC_AUTONEG_TIMEOUT / 100; i++) { + status = emac_mii_read(priv, priv->phy_addr, MII_BMSR); + if (status & BMSR_ANEGCOMPLETE) + break; + udelay(100); + } + + if (status & BMSR_ANEGCOMPLETE) + rt_kprintf("%s: Autonegotiation complete\n", dev->parent.name); + else + rt_kprintf("%s: Autonegotiation timed out (status=0x%04x)\n", + dev->parent.name, status); +} + + +static int davinci_emac_phy_init(rt_device_t dev) +{ + struct emac_priv *priv = dev->user_data; + rt_uint16_t phy_id, status, adv, lpa; + int media, speed, duplex; + int i; + + /* Check if the PHY is up to snuff... */ + phy_id = emac_mii_read(priv, priv->phy_addr, MII_PHYSID1); + if (phy_id == 0xffff) { + rt_kprintf("%s: No PHY present\n", dev->parent.name); + return 0; + } + + status = emac_mii_read(priv, priv->phy_addr, MII_BMSR); + if (!(status & BMSR_LSTATUS)) { + /* Try to re-negotiate if we don't have link already. */ + davinci_emac_phy_reset(dev); + + for (i = 0; i < EMAC_LINK_TIMEOUT / 100; i++) { + status = emac_mii_read(priv, priv->phy_addr, MII_BMSR); + if (status & BMSR_LSTATUS) + break; + udelay(100); + } + } + + if (!(status & BMSR_LSTATUS)) { + rt_kprintf("%s: link down (status: 0x%04x)\n", + dev->parent.name, status); + priv->link = 0; + return 0; + } else { + adv = emac_mii_read(priv, priv->phy_addr, MII_ADVERTISE); + lpa = emac_mii_read(priv, priv->phy_addr, MII_LPA); + media = mii_nway_result(lpa & adv); + speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) + ? 1 : 0); + duplex = (media & ADVERTISE_FULL) ? 1 : 0; + rt_kprintf("%s: link up, %sMbps %s-duplex (lpa: 0x%04x)\n", + dev->parent.name, + speed ? "100" : "10", + duplex ? "full" : "half", + lpa); + priv->speed = speed; + priv->duplex = duplex; + priv->link = 1; + + return 1; + } +} + +/** + * emac_update_phystatus: Update Phy status + * @priv: The DaVinci EMAC driver private structure + * + * Updates phy status and takes action for network queue if required + * based upon link status + * + */ +static void emac_update_phystatus(struct emac_priv *priv) +{ + rt_uint32_t mac_control; + rt_uint32_t new_duplex; + rt_uint32_t cur_duplex; + + mac_control = emac_read(EMAC_MACCONTROL); + cur_duplex = (mac_control & EMAC_MACCONTROL_FULLDUPLEXEN) ? + DUPLEX_FULL : DUPLEX_HALF; + if (priv->phy_mask) + new_duplex = priv->duplex; + else + new_duplex = DUPLEX_FULL; + + /* We get called only if link has changed (speed/duplex/status) */ + if ((priv->link) && (new_duplex != cur_duplex)) { + priv->duplex = new_duplex; + if (DUPLEX_FULL == priv->duplex) + mac_control |= (EMAC_MACCONTROL_FULLDUPLEXEN); + else + mac_control &= ~(EMAC_MACCONTROL_FULLDUPLEXEN); + } + + if (priv->speed == SPEED_1000 && (priv->version == EMAC_VERSION_2)) { + mac_control = emac_read(EMAC_MACCONTROL); + mac_control |= (EMAC_DM646X_MACCONTORL_GIG | + EMAC_DM646X_MACCONTORL_GIGFORCE); + } else { + /* Clear the GIG bit and GIGFORCE bit */ + mac_control &= ~(EMAC_DM646X_MACCONTORL_GIGFORCE | + EMAC_DM646X_MACCONTORL_GIG); + + if (priv->rmii_en && (priv->speed == SPEED_100)) + mac_control |= EMAC_MACCONTROL_RMIISPEED_MASK; + else + mac_control &= ~EMAC_MACCONTROL_RMIISPEED_MASK; + } + + /* Update mac_control if changed */ + emac_write(EMAC_MACCONTROL, mac_control); +#if 0 + if (priv->link) { + /* link ON */ + /* reactivate the transmit queue if it is stopped */ + } else { + /* link OFF */ + } +#endif +} + + +void davinci_emac_update_link(void *param) +{ + struct emac_priv *priv = param; + rt_device_t dev = &(priv->parent.parent); + rt_uint32_t status, status_change = 0; + rt_uint32_t link; + rt_uint32_t media; + rt_uint16_t adv, lpa; + + status = emac_mii_read(priv, priv->phy_addr, MII_BMSR); + if ((status & BMSR_LSTATUS) == 0) + link = 0; + else + link = 1; + + if (link != priv->link) { + priv->link = link; + status_change = 1; + } + + if (status_change) { + if (priv->link) { + adv = emac_mii_read(priv, priv->phy_addr, MII_ADVERTISE); + lpa = emac_mii_read(priv, priv->phy_addr, MII_LPA); + media = mii_nway_result(lpa & adv); + priv->speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) + ? 100 : 10); + priv->duplex = (media & ADVERTISE_FULL) ? 1 : 0; + rt_kprintf("%s: link up (%dMbps/%s-duplex)\n", + dev->parent.name, priv->speed, + DUPLEX_FULL == priv->duplex ? "Full":"Half"); + eth_device_linkchange(&priv->parent, RT_TRUE); + } else { + rt_kprintf("%s: link down\n", dev->parent.name); + eth_device_linkchange(&priv->parent, RT_FALSE); + } + emac_update_phystatus(priv); + + } + +} + + +/** + * emac_net_tx_complete: TX packet completion function + * @priv: The DaVinci EMAC driver private structure + * @net_data_tokens: packet token - pbuf pointer + * @num_tokens: number of pbuf's to free + * @ch: TX channel number + * + * Frees the pbuf once packet is transmitted + * + */ +static int emac_net_tx_complete(struct emac_priv *priv, + void **net_data_tokens, + int num_tokens, rt_uint32_t ch) +{ + rt_uint32_t cnt; + + for (cnt = 0; cnt < num_tokens; cnt++) { + struct pbuf *p = (struct pbuf *)net_data_tokens[cnt]; + if (p == RT_NULL) + continue; + priv->net_dev_stats.tx_packets++; + priv->net_dev_stats.tx_bytes += p->len; + //free pbuf + } + rt_sem_release(&sem_ack); + return 0; +} + +/** + * emac_txch_teardown: TX channel teardown + * @priv: The DaVinci EMAC driver private structure + * @ch: TX channel number + * + * Called to teardown TX channel + * + */ +static void emac_txch_teardown(struct emac_priv *priv, rt_uint32_t ch) +{ + rt_uint32_t teardown_cnt = 0xFFFFFFF0; /* Some high value */ + struct emac_txch *txch = priv->txch[ch]; + struct emac_tx_bd __iomem *curr_bd; + + while ((emac_read(EMAC_TXCP(ch)) & EMAC_TEARDOWN_VALUE) != + EMAC_TEARDOWN_VALUE) { + /* wait till tx teardown complete */ + --teardown_cnt; + if (0 == teardown_cnt) { + rt_kprintf("EMAC: TX teardown aborted\n"); + break; + } + } + emac_write(EMAC_TXCP(ch), EMAC_TEARDOWN_VALUE); + + /* process sent packets and return pbuf's to upper layer */ + if (1 == txch->queue_active) { + curr_bd = txch->active_queue_head; + while (curr_bd != RT_NULL) { + emac_net_tx_complete(priv, (void *) + &curr_bd->buf_token, 1, ch); + if (curr_bd != txch->active_queue_tail) + curr_bd = curr_bd->next; + else + break; + } + txch->bd_pool_head = txch->active_queue_head; + txch->active_queue_head = + txch->active_queue_tail = RT_NULL; + } +} + + +/** + * emac_stop_txch: Stop TX channel operation + * @priv: The DaVinci EMAC driver private structure + * @ch: TX channel number + * + * Called to stop TX channel operation + * + */ +static void emac_stop_txch(struct emac_priv *priv, rt_uint32_t ch) +{ + struct emac_txch *txch = priv->txch[ch]; + + if (txch) { + txch->teardown_pending = 1; + emac_write(EMAC_TXTEARDOWN, 0); + emac_txch_teardown(priv, ch); + txch->teardown_pending = 0; + emac_write(EMAC_TXINTMASKCLEAR, BIT(ch)); + } +} + + + +/** + * emac_tx_bdproc: TX buffer descriptor (packet) processing + * @priv: The DaVinci EMAC driver private structure + * @ch: TX channel number to process buffer descriptors for + * @budget: number of packets allowed to process + * @pending: indication to caller that packets are pending to process + * + * Processes TX buffer descriptors after packets are transmitted - checks + * ownership bit on the TX * descriptor and requeues it to free pool & frees + * the PBUF buffer. Only "budget" number of packets are processed and + * indication of pending packets provided to the caller + * + * Returns number of packets processed + */ +static int emac_tx_bdproc(struct emac_priv *priv, rt_uint32_t ch, rt_uint32_t budget) +{ + unsigned long flags; + rt_uint32_t frame_status; + rt_uint32_t pkts_processed = 0; + rt_uint32_t tx_complete_cnt = 0; + struct emac_tx_bd __iomem *curr_bd; + struct emac_txch *txch = priv->txch[ch]; + rt_uint32_t *tx_complete_ptr = txch->tx_complete; + + if (1 == txch->teardown_pending) { + rt_kprintf("DaVinci EMAC:emac_tx_bdproc: "\ + "teardown pending\n"); + return 0; /* dont handle any pkt completions */ + } + + ++txch->proc_count; + rt_sem_take(&priv->tx_lock, RT_WAITING_FOREVER); + curr_bd = txch->active_queue_head; + if (RT_NULL == curr_bd) { + emac_write(EMAC_TXCP(ch), + emac_virt_to_phys(txch->last_hw_bdprocessed)); + txch->no_active_pkts++; + rt_sem_release(&priv->tx_lock); + return 0; + } + BD_CACHE_INVALIDATE(curr_bd, EMAC_BD_LENGTH_FOR_CACHE); + frame_status = curr_bd->mode; + while ((curr_bd) && + ((frame_status & EMAC_CPPI_OWNERSHIP_BIT) == 0) && + (pkts_processed < budget)) { + emac_write(EMAC_TXCP(ch), emac_virt_to_phys(curr_bd)); + txch->active_queue_head = curr_bd->next; + if (frame_status & EMAC_CPPI_EOQ_BIT) { + if (curr_bd->next) { /* misqueued packet */ + emac_write(EMAC_TXHDP(ch), curr_bd->h_next); + ++txch->mis_queued_packets; + } else { + txch->queue_active = 0; /* end of queue */ + } + } + *tx_complete_ptr = (rt_uint32_t) curr_bd->buf_token; + ++tx_complete_ptr; + ++tx_complete_cnt; + curr_bd->next = txch->bd_pool_head; + txch->bd_pool_head = curr_bd; + --txch->active_queue_count; + pkts_processed++; + txch->last_hw_bdprocessed = curr_bd; + curr_bd = txch->active_queue_head; + if (curr_bd) { + BD_CACHE_INVALIDATE(curr_bd, EMAC_BD_LENGTH_FOR_CACHE); + frame_status = curr_bd->mode; + } + } /* end of pkt processing loop */ + + emac_net_tx_complete(priv, + (void *)&txch->tx_complete[0], + tx_complete_cnt, ch); + rt_sem_release(&priv->tx_lock); + return pkts_processed; +} + + +#define EMAC_ERR_TX_OUT_OF_BD -1 + +/** + * emac_send: EMAC Transmit function (internal) + * @priv: The DaVinci EMAC driver private structure + * @pkt: packet pointer (contains pbuf ptr) + * @ch: TX channel number + * + * Called by the transmit function to queue the packet in EMAC hardware queue + * + * Returns success(0) or error code (typically out of desc's) + */ +static int emac_send(struct emac_priv *priv, struct emac_netpktobj *pkt, rt_uint32_t ch) +{ + unsigned long flags; + struct emac_tx_bd __iomem *curr_bd; + struct emac_txch *txch; + struct emac_netbufobj *buf_list; + + txch = priv->txch[ch]; + buf_list = pkt->buf_list; /* get handle to the buffer array */ + + /* check packet size and pad if short */ + if (pkt->pkt_length < EMAC_DEF_MIN_ETHPKTSIZE) { + buf_list->length += (EMAC_DEF_MIN_ETHPKTSIZE - pkt->pkt_length); + pkt->pkt_length = EMAC_DEF_MIN_ETHPKTSIZE; + } + + rt_sem_take(&priv->tx_lock, RT_WAITING_FOREVER); + curr_bd = txch->bd_pool_head; + if (curr_bd == RT_NULL) { + txch->out_of_tx_bd++; + rt_sem_release(&priv->tx_lock); + return EMAC_ERR_TX_OUT_OF_BD; + } + + txch->bd_pool_head = curr_bd->next; + curr_bd->buf_token = buf_list->buf_token; + curr_bd->buff_ptr = virt_to_phys(buf_list->data_ptr); + curr_bd->off_b_len = buf_list->length; + curr_bd->h_next = 0; + curr_bd->next = RT_NULL; + curr_bd->mode = (EMAC_CPPI_SOP_BIT | EMAC_CPPI_OWNERSHIP_BIT | + EMAC_CPPI_EOP_BIT | pkt->pkt_length); + + /* flush the packet from cache if write back cache is present */ + BD_CACHE_WRITEBACK_INVALIDATE(curr_bd, EMAC_BD_LENGTH_FOR_CACHE); + + /* send the packet */ + if (txch->active_queue_head == RT_NULL) { + txch->active_queue_head = curr_bd; + txch->active_queue_tail = curr_bd; + if (1 != txch->queue_active) { + emac_write(EMAC_TXHDP(ch), + emac_virt_to_phys(curr_bd)); + txch->queue_active = 1; + } + ++txch->queue_reinit; + } else { + register struct emac_tx_bd __iomem *tail_bd; + register rt_uint32_t frame_status; + + tail_bd = txch->active_queue_tail; + tail_bd->next = curr_bd; + txch->active_queue_tail = curr_bd; + tail_bd = EMAC_VIRT_NOCACHE(tail_bd); + tail_bd->h_next = (int)emac_virt_to_phys(curr_bd); + frame_status = tail_bd->mode; + if (frame_status & EMAC_CPPI_EOQ_BIT) { + emac_write(EMAC_TXHDP(ch), emac_virt_to_phys(curr_bd)); + frame_status &= ~(EMAC_CPPI_EOQ_BIT); + tail_bd->mode = frame_status; + ++txch->end_of_queue_add; + } + } + txch->active_queue_count++; + rt_sem_release(&priv->tx_lock); + return 0; +} + +/** + * emac_dev_xmit: EMAC Transmit function + * @pbuf: PBUF pointer + * @priv: The DaVinci EMAC driver private structure + * + * Called by the system to transmit a packet - we queue the packet in + * EMAC hardware transmit queue + * + * Returns success(RT_EOK) or error code (typically out of desc's) + */ +static int emac_dev_xmit(struct pbuf *p, struct emac_priv *priv) +{ + int ret_code; + struct emac_netbufobj tx_buf; /* buffer obj-only single frame support */ + struct emac_netpktobj tx_packet; /* packet object */ + + /* If no link, return */ + if (!priv->link) { + rt_kprintf("DaVinci EMAC: No link to transmit\n"); + return -RT_EBUSY; + } + + /* Build the buffer and packet objects - Since only single fragment is + * supported, need not set length and token in both packet & object. + * Doing so for completeness sake & to show that this needs to be done + * in multifragment case + */ + tx_packet.buf_list = &tx_buf; + tx_packet.num_bufs = 1; /* only single fragment supported */ + tx_packet.pkt_length = p->len; + tx_packet.pkt_token = (void *)p; + tx_buf.length = p->len; + tx_buf.buf_token = (void *)p; + tx_buf.data_ptr = p->payload; + EMAC_CACHE_WRITEBACK((unsigned long)p->payload, p->len); + ret_code = emac_send(priv, &tx_packet, EMAC_DEF_TX_CH); + if (ret_code != 0) { + if (ret_code == EMAC_ERR_TX_OUT_OF_BD) { + rt_kprintf("DaVinci EMAC: xmit() fatal"\ + " err. Out of TX BD's\n"); + } + priv->net_dev_stats.tx_dropped++; + return -RT_EBUSY; + } + + return RT_EOK; +} + +/** + * emac_cleanup_txch: Book-keep function to clean TX channel resources + * @priv: The DaVinci EMAC private adapter structure + * @ch: TX channel number + * + * Called to clean up TX channel resources + * + */ +static void emac_cleanup_txch(struct emac_priv *priv, rt_uint32_t ch) +{ + struct emac_txch *txch = priv->txch[ch]; + + if (txch) { + if (txch->bd_mem) + txch->bd_mem = NULL; + rt_free(txch->tx_complete); + rt_free(txch); + priv->txch[ch] = NULL; + } +} + + +/** + * emac_dev_tx_timeout: EMAC Transmit timeout function + * @ndev: The DaVinci EMAC network adapter + * + * Called when system detects that a skb timeout period has expired + * potentially due to a fault in the adapter in not being able to send + * it out on the wire. We teardown the TX channel assuming a hardware + * error and re-initialize the TX channel for hardware operation + * + */ +static void emac_dev_tx_timeout(struct emac_priv *priv) +{ + rt_kprintf("emac tx timeout.\n"); + priv->net_dev_stats.tx_errors++; + emac_int_disable(priv); + emac_stop_txch(priv, EMAC_DEF_TX_CH); + emac_cleanup_txch(priv, EMAC_DEF_TX_CH); + emac_init_txch(priv, EMAC_DEF_TX_CH); + emac_write(EMAC_TXHDP(0), 0); + emac_write(EMAC_TXINTMASKSET, BIT(EMAC_DEF_TX_CH)); + emac_int_enable(priv); +} + + +/* ethernet device interface */ +/* transmit packet. */ +rt_err_t rt_davinci_emac_tx( rt_device_t dev, struct pbuf* p) +{ + /*struct pbuf* q; + rt_uint8_t* bufptr, *buf = RT_NULL; + unsigned long ctrl; + rt_uint32_t addr;*/ + rt_err_t err; + struct emac_priv *priv = dev->user_data; + + emac_dev_xmit(p, priv); + + +#if 0 + buf = rt_malloc(p->tot_len); + if (!buf) { + rt_kprintf("%s:alloc buf failed\n", __func__); + return -RT_ENOMEM; + } + bufptr = buf; + + + /*for (q = p; q != RT_NULL; q = q->next) + { + memcpy(bufptr, q->payload, q->len); + bufptr += q->len; + }*/ +#endif + /* wait ack */ + err = rt_sem_take(&sem_ack, RT_TICK_PER_SECOND*5); + if (err != RT_EOK) + { + emac_dev_tx_timeout(priv); + } + //rt_free(buf); + + return RT_EOK; +} + +/** + * emac_addbd_to_rx_queue: Recycle RX buffer descriptor + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number to process buffer descriptors for + * @curr_bd: current buffer descriptor + * @buffer: buffer pointer for descriptor + * @buf_token: buffer token (stores pbuf information) + * + * Prepares the recycled buffer descriptor and addes it to hardware + * receive queue - if queue empty this descriptor becomes the head + * else addes the descriptor to end of queue + * + */ +static void emac_addbd_to_rx_queue(struct emac_priv *priv, rt_uint32_t ch, + struct emac_rx_bd __iomem *curr_bd, + char *buffer, void *buf_token) +{ + struct emac_rxch *rxch = priv->rxch[ch]; + + /* populate the hardware descriptor */ + curr_bd->h_next = 0; + curr_bd->buff_ptr = virt_to_phys(buffer); + curr_bd->off_b_len = rxch->buf_size; + curr_bd->mode = EMAC_CPPI_OWNERSHIP_BIT; + curr_bd->next = RT_NULL; + curr_bd->data_ptr = buffer; + curr_bd->buf_token = buf_token; + + /* write back */ + BD_CACHE_WRITEBACK_INVALIDATE(curr_bd, EMAC_BD_LENGTH_FOR_CACHE); + if (rxch->active_queue_head == RT_NULL) { + rxch->active_queue_head = curr_bd; + rxch->active_queue_tail = curr_bd; + if (0 != rxch->queue_active) { + emac_write(EMAC_RXHDP(ch), + emac_virt_to_phys(rxch->active_queue_head)); + rxch->queue_active = 1; + } + } else { + struct emac_rx_bd __iomem *tail_bd; + rt_uint32_t frame_status; + + tail_bd = rxch->active_queue_tail; + rxch->active_queue_tail = curr_bd; + tail_bd->next = curr_bd; + tail_bd = EMAC_VIRT_NOCACHE(tail_bd); + tail_bd->h_next = emac_virt_to_phys(curr_bd); + frame_status = tail_bd->mode; + if (frame_status & EMAC_CPPI_EOQ_BIT) { + emac_write(EMAC_RXHDP(ch), + emac_virt_to_phys(curr_bd)); + frame_status &= ~(EMAC_CPPI_EOQ_BIT); + tail_bd->mode = frame_status; + ++rxch->end_of_queue_add; + } + } + ++rxch->recycled_bd; +} + +/** + * emac_net_rx_cb: Prepares packet and sends to upper layer + * @priv: The DaVinci EMAC driver private structure + * @net_pkt_list: Network packet list (received packets) + * + * Invalidates packet buffer memory and sends the received packet to upper + * layer + * + * Returns success or appropriate error code (none as of now) + */ +static int emac_net_rx_cb(struct emac_priv *priv, + struct emac_netpktobj *net_pkt_list) +{ + struct eth_device *device = &priv->parent; + struct pbuf *p; + p = (struct pbuf *)net_pkt_list->pkt_token; + /* set length of packet */ + p->tot_len = net_pkt_list->pkt_length; + p->len = net_pkt_list->pkt_length; + EMAC_CACHE_INVALIDATE((unsigned long)p->payload, p->len); + if (device->netif->input(p, device->netif) != RT_EOK) + { + pbuf_free(p); + } + priv->net_dev_stats.rx_bytes += net_pkt_list->pkt_length; + priv->net_dev_stats.rx_packets++; + return 0; +} + +/** + * emac_net_alloc_rx_buf: Allocate a pbuf for RX + * @priv: The DaVinci EMAC driver private structure + * @buf_size: size of PBUF data buffer to allocate + * @data_token: data token returned (pbuf handle for storing in buffer desc) + * @ch: RX channel number + * + * Called during RX channel setup - allocates pbuf buffer of required size + * and provides the pbuf handle and allocated buffer data pointer to caller + * + * Returns pbuf data pointer or 0 on failure to alloc pbuf + */ +static void *emac_net_alloc_rx_buf(struct emac_priv *priv, int buf_size, + void **data_token, rt_uint32_t ch) +{ + struct pbuf* p; + + p = pbuf_alloc(PBUF_LINK, buf_size, PBUF_RAM); + if (RT_NULL == p) { + rt_kprintf("DaVinci EMAC: failed to alloc pbuf\n"); + return RT_NULL; + } + + /* set device pointer in p and reserve space for extra bytes */ + *data_token = (void *) p; + EMAC_CACHE_WRITEBACK_INVALIDATE((unsigned long)p->payload, buf_size); + return p->payload; +} + + +/** + * emac_rx_bdproc: RX buffer descriptor (packet) processing + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number to process buffer descriptors for + * @budget: number of packets allowed to process + * + * Processes RX buffer descriptors - checks ownership bit on the RX buffer + * descriptor, sends the receive packet to upper layer, allocates a new PBUF + * and recycles the buffer descriptor (requeues it in hardware RX queue). + * Only "budget" number of packets are processed and indication of pending + * packets provided to the caller. + * + * Returns number of packets processed (and indication of pending packets) + */ +static int emac_rx_bdproc(struct emac_priv *priv, rt_uint32_t ch, rt_uint32_t budget) +{ + unsigned long flags; + rt_uint32_t frame_status; + rt_uint32_t pkts_processed = 0; + char *new_buffer; + struct emac_rx_bd __iomem *curr_bd; + struct emac_rx_bd __iomem *last_bd; + struct emac_netpktobj *curr_pkt, pkt_obj; + struct emac_netbufobj buf_obj; + struct emac_netbufobj *rx_buf_obj; + void *new_buf_token; + struct emac_rxch *rxch = priv->rxch[ch]; + + if (1 == rxch->teardown_pending) + return 0; + ++rxch->proc_count; + rt_sem_take(&priv->rx_lock, RT_WAITING_FOREVER); + pkt_obj.buf_list = &buf_obj; + curr_pkt = &pkt_obj; + curr_bd = rxch->active_queue_head; + BD_CACHE_INVALIDATE(curr_bd, EMAC_BD_LENGTH_FOR_CACHE); + frame_status = curr_bd->mode; + + while ((curr_bd) && + ((frame_status & EMAC_CPPI_OWNERSHIP_BIT) == 0) && + (pkts_processed < budget)) { + + new_buffer = emac_net_alloc_rx_buf(priv, rxch->buf_size, + &new_buf_token, EMAC_DEF_RX_CH); + if (RT_NULL == new_buffer) { + ++rxch->out_of_rx_buffers; + goto end_emac_rx_bdproc; + } + + /* populate received packet data structure */ + rx_buf_obj = &curr_pkt->buf_list[0]; + rx_buf_obj->data_ptr = (char *)curr_bd->data_ptr; + rx_buf_obj->length = curr_bd->off_b_len & EMAC_RX_BD_BUF_SIZE; + rx_buf_obj->buf_token = curr_bd->buf_token; + curr_pkt->pkt_token = curr_pkt->buf_list->buf_token; + curr_pkt->num_bufs = 1; + curr_pkt->pkt_length = + (frame_status & EMAC_RX_BD_PKT_LENGTH_MASK); + emac_write(EMAC_RXCP(ch), emac_virt_to_phys(curr_bd)); + ++rxch->processed_bd; + last_bd = curr_bd; + curr_bd = last_bd->next; + rxch->active_queue_head = curr_bd; + + /* check if end of RX queue ? */ + if (frame_status & EMAC_CPPI_EOQ_BIT) { + if (curr_bd) { + ++rxch->mis_queued_packets; + emac_write(EMAC_RXHDP(ch), + emac_virt_to_phys(curr_bd)); + } else { + ++rxch->end_of_queue; + rxch->queue_active = 0; + } + } + + /* recycle BD */ + emac_addbd_to_rx_queue(priv, ch, last_bd, new_buffer, + new_buf_token); + + /* return the packet to the user - BD ptr passed in + * last parameter for potential *future* use */ + rt_sem_release(&priv->rx_lock); + emac_net_rx_cb(priv, curr_pkt);//??? + rt_sem_take(&priv->rx_lock, RT_WAITING_FOREVER); + curr_bd = rxch->active_queue_head; + if (curr_bd) { + BD_CACHE_INVALIDATE(curr_bd, EMAC_BD_LENGTH_FOR_CACHE); + frame_status = curr_bd->mode; + } + ++pkts_processed; + } + +end_emac_rx_bdproc: + rt_sem_release(&priv->rx_lock); + return pkts_processed; +} + + +/* reception packet. */ +struct pbuf *rt_davinci_emac_rx(rt_device_t dev) +{ + struct emac_priv *priv = dev->user_data; + struct pbuf* p = RT_NULL; + rt_uint32_t len; + void *buffer; + + struct pbuf* q; + rt_uint8_t *buf = RT_NULL; + unsigned int mask; + rt_uint32_t status = 0; + rt_uint32_t num_pkts = 0; + + /* Check interrupt vectors and call packet processing */ + status = emac_read(EMAC_MACINVECTOR); + + mask = EMAC_DM644X_MAC_IN_VECTOR_TX_INT_VEC; + + if (priv->version == EMAC_VERSION_2) + mask = EMAC_DM646X_MAC_IN_VECTOR_TX_INT_VEC; + + if (status & mask) { + num_pkts = emac_tx_bdproc(priv, EMAC_DEF_TX_CH, + EMAC_DEF_TX_MAX_SERVICE); + } /* TX processing */ + + /*if (num_pkts) + //return budget; + return RT_NULL;*/ + + mask = EMAC_DM644X_MAC_IN_VECTOR_RX_INT_VEC; + + if (priv->version == EMAC_VERSION_2) + mask = EMAC_DM646X_MAC_IN_VECTOR_RX_INT_VEC; + + if (status & mask) { + num_pkts = emac_rx_bdproc(priv, EMAC_DEF_RX_CH, EMAC_DEF_RX_MAX_SERVICE); + } /* RX processing */ + + /*if (num_pkts < EMAC_DEF_RX_MAX_SERVICE) { + emac_int_enable(priv); + }*/ + + mask = EMAC_DM644X_MAC_IN_VECTOR_HOST_INT; + if (priv->version == EMAC_VERSION_2) + mask = EMAC_DM646X_MAC_IN_VECTOR_HOST_INT; + + if (status & mask) { + rt_uint32_t ch, cause; + rt_kprintf("DaVinci EMAC: Fatal Hardware Error\n"); + + status = emac_read(EMAC_MACSTATUS); + cause = ((status & EMAC_MACSTATUS_TXERRCODE_MASK) >> + EMAC_MACSTATUS_TXERRCODE_SHIFT); + if (cause) { + ch = ((status & EMAC_MACSTATUS_TXERRCH_MASK) >> + EMAC_MACSTATUS_TXERRCH_SHIFT); + } + cause = ((status & EMAC_MACSTATUS_RXERRCODE_MASK) >> + EMAC_MACSTATUS_RXERRCODE_SHIFT); + if (cause) { + ch = ((status & EMAC_MACSTATUS_RXERRCH_MASK) >> + EMAC_MACSTATUS_RXERRCH_SHIFT); + } + } /* Host error processing */ + + //return num_pkts; + //return p; + emac_int_enable(priv); + return RT_NULL; +} + + +/** + * emac_set_type0addr: Set EMAC Type0 mac address + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number + * @mac_addr: MAC address to set in device + * + * Called internally to set Type0 mac address of the Device + * + * Returns success (0) or appropriate error code (none as of now) + */ +static void emac_set_type0addr(struct emac_priv *priv, rt_uint32_t ch, char *mac_addr) +{ + rt_uint32_t val; + val = ((mac_addr[5] << 8) | (mac_addr[4])); + emac_write(EMAC_MACSRCADDRLO, val); + + val = ((mac_addr[3] << 24) | (mac_addr[2] << 16) | \ + (mac_addr[1] << 8) | (mac_addr[0])); + emac_write(EMAC_MACSRCADDRHI, val); + val = emac_read(EMAC_RXUNICASTSET); + val |= BIT(ch); + emac_write(EMAC_RXUNICASTSET, val); + val = emac_read(EMAC_RXUNICASTCLEAR); + val &= ~BIT(ch); + emac_write(EMAC_RXUNICASTCLEAR, val); +} + +/** + * emac_set_type1addr: Set EMAC Type1 mac address + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number + * @mac_addr: MAC address to set in device + * + * Called internally to set Type1 mac address of the Device + * + * Returns success (0) or appropriate error code (none as of now) + */ +static void emac_set_type1addr(struct emac_priv *priv, rt_uint32_t ch, char *mac_addr) +{ + rt_uint32_t val; + emac_write(EMAC_MACINDEX, ch); + val = ((mac_addr[5] << 8) | mac_addr[4]); + emac_write(EMAC_MACADDRLO, val); + val = ((mac_addr[3] << 24) | (mac_addr[2] << 16) | \ + (mac_addr[1] << 8) | (mac_addr[0])); + emac_write(EMAC_MACADDRHI, val); + emac_set_type0addr(priv, ch, mac_addr); +} + +/** + * emac_set_type2addr: Set EMAC Type2 mac address + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number + * @mac_addr: MAC address to set in device + * @index: index into RX address entries + * @match: match parameter for RX address matching logic + * + * Called internally to set Type2 mac address of the Device + * + * Returns success (0) or appropriate error code (none as of now) + */ +static void emac_set_type2addr(struct emac_priv *priv, rt_uint32_t ch, + char *mac_addr, int index, int match) +{ + rt_uint32_t val; + emac_write(EMAC_MACINDEX, index); + val = ((mac_addr[3] << 24) | (mac_addr[2] << 16) | \ + (mac_addr[1] << 8) | (mac_addr[0])); + emac_write(EMAC_MACADDRHI, val); + val = ((mac_addr[5] << 8) | mac_addr[4] | ((ch & 0x7) << 16) | \ + (match << 19) | BIT(20)); + emac_write(EMAC_MACADDRLO, val); + emac_set_type0addr(priv, ch, mac_addr); +} + +/** + * emac_setmac: Set mac address in the adapter (internal function) + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number + * @mac_addr: MAC address to set in device + * + * Called internally to set the mac address of the Device + * + * Returns success (0) or appropriate error code (none as of now) + */ +static void emac_setmac(struct emac_priv *priv, rt_uint32_t ch, char *mac_addr) +{ + if (priv->rx_addr_type == 0) { + emac_set_type0addr(priv, ch, mac_addr); + } else if (priv->rx_addr_type == 1) { + rt_uint32_t cnt; + for (cnt = 0; cnt < EMAC_MAX_TXRX_CHANNELS; cnt++) + emac_set_type1addr(priv, ch, mac_addr); + } else if (priv->rx_addr_type == 2) { + emac_set_type2addr(priv, ch, mac_addr, ch, 1); + emac_set_type0addr(priv, ch, mac_addr); + } else { + rt_kprintf("DaVinci EMAC: Wrong addressing\n"); + } +} + + +/** EMAC on-chip buffer descriptor memory + * + * WARNING: Please note that the on chip memory is used for both TX and RX + * buffer descriptor queues and is equally divided between TX and RX desc's + * If the number of TX or RX descriptors change this memory pointers need + * to be adjusted. If external memory is allocated then these pointers can + * pointer to the memory + * + */ +#define EMAC_TX_BD_MEM(priv) ((priv)->emac_ctrl_ram) +#define EMAC_RX_BD_MEM(priv) ((priv)->emac_ctrl_ram + \ + (((priv)->ctrl_ram_size) >> 1)) + +/** + * emac_init_txch: TX channel initialization + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number + * + * Called during device init to setup a TX channel (allocate buffer desc + * create free pool and keep ready for transmission + * + * Returns success(0) or mem alloc failures error code + */ +static int emac_init_txch(struct emac_priv *priv, rt_uint32_t ch) +{ + rt_uint32_t cnt, bd_size; + void __iomem *mem; + struct emac_tx_bd __iomem *curr_bd; + struct emac_txch *txch = RT_NULL; + + txch = rt_malloc(sizeof(struct emac_txch)); + if (RT_NULL == txch) { + rt_kprintf("DaVinci EMAC: TX Ch mem alloc failed"); + return -RT_ENOMEM; + } + rt_memset(txch, 0, sizeof(struct emac_txch)); + priv->txch[ch] = txch; + txch->service_max = EMAC_DEF_TX_MAX_SERVICE; + txch->active_queue_head = RT_NULL; + txch->active_queue_tail = RT_NULL; + txch->queue_active = 0; + txch->teardown_pending = 0; + + /* allocate memory for TX CPPI channel on a 4 byte boundry */ + txch->tx_complete = rt_malloc(txch->service_max * sizeof(rt_uint32_t)); + if (RT_NULL == txch->tx_complete) { + rt_kprintf("DaVinci EMAC: Tx service mem alloc failed"); + rt_free(txch); + return -RT_ENOMEM; + } + memset(txch->tx_complete, 0, txch->service_max * sizeof(rt_uint32_t)); + + /* allocate buffer descriptor pool align every BD on four word + * boundry for future requirements */ + bd_size = (sizeof(struct emac_tx_bd) + 0xF) & ~0xF; + txch->num_bd = (priv->ctrl_ram_size >> 1) / bd_size; + txch->alloc_size = (((bd_size * txch->num_bd) + 0xF) & ~0xF); + + /* alloc TX BD memory */ + txch->bd_mem = EMAC_TX_BD_MEM(priv); + rt_memset((void *)txch->bd_mem, 0, txch->alloc_size); + + /* initialize the BD linked list */ + mem = (void __iomem *) + (((rt_uint32_t) txch->bd_mem + 0xF) & ~0xF); + txch->bd_pool_head = RT_NULL; + for (cnt = 0; cnt < txch->num_bd; cnt++) { + curr_bd = mem + (cnt * bd_size); + curr_bd->next = txch->bd_pool_head; + txch->bd_pool_head = curr_bd; + } + + /* reset statistics counters */ + txch->out_of_tx_bd = 0; + txch->no_active_pkts = 0; + txch->active_queue_count = 0; + + return 0; +} + +/** + * emac_init_rxch: RX channel initialization + * @priv: The DaVinci EMAC driver private structure + * @ch: RX channel number + * @param: mac address for RX channel + * + * Called during device init to setup a RX channel (allocate buffers and + * buffer descriptors, create queue and keep ready for reception + * + * Returns success(0) or mem alloc failures error code + */ +static int emac_init_rxch(struct emac_priv *priv, rt_uint32_t ch, char *param) +{ + rt_uint32_t cnt, bd_size; + void __iomem *mem; + struct emac_rx_bd __iomem *curr_bd; + struct emac_rxch *rxch = RT_NULL; + + rxch = rt_malloc(sizeof(struct emac_rxch)); + if (RT_NULL == rxch) { + rt_kprintf("DaVinci EMAC: RX Ch mem alloc failed"); + return -ENOMEM; + } + rt_memset(rxch, 0, sizeof(struct emac_rxch)); + priv->rxch[ch] = rxch; + rxch->buf_size = priv->rx_buf_size; + rxch->service_max = EMAC_DEF_RX_MAX_SERVICE; + rxch->queue_active = 0; + rxch->teardown_pending = 0; + + /* save mac address */ + for (cnt = 0; cnt < 6; cnt++) + rxch->mac_addr[cnt] = param[cnt]; + + /* allocate buffer descriptor pool align every BD on four word + * boundry for future requirements */ + bd_size = (sizeof(struct emac_rx_bd) + 0xF) & ~0xF; + rxch->num_bd = (priv->ctrl_ram_size >> 1) / bd_size; + rxch->alloc_size = (((bd_size * rxch->num_bd) + 0xF) & ~0xF); + rxch->bd_mem = EMAC_RX_BD_MEM(priv); + + rt_memset((void *)rxch->bd_mem, 0, rxch->alloc_size); + rxch->pkt_queue.buf_list = &rxch->buf_queue; + + /* allocate RX buffer and initialize the BD linked list */ + mem = (void __iomem *) + (((rt_uint32_t) rxch->bd_mem + 0xF) & ~0xF); + rxch->active_queue_head = RT_NULL; + rxch->active_queue_tail = mem; + for (cnt = 0; cnt < rxch->num_bd; cnt++) { + curr_bd = mem + (cnt * bd_size); + /* for future use the last parameter contains the BD ptr */ + curr_bd->data_ptr = emac_net_alloc_rx_buf(priv, + rxch->buf_size, + (void **)&curr_bd->buf_token, + EMAC_DEF_RX_CH); + if (curr_bd->data_ptr == RT_NULL) { + rt_kprintf("DaVinci EMAC: RX buf mem alloc " \ + "failed for ch %d\n", ch); + rt_free(rxch); + return -RT_ENOMEM; + } + + /* populate the hardware descriptor */ + curr_bd->h_next = emac_virt_to_phys(rxch->active_queue_head); + curr_bd->buff_ptr = virt_to_phys(curr_bd->data_ptr); + curr_bd->off_b_len = rxch->buf_size; + curr_bd->mode = EMAC_CPPI_OWNERSHIP_BIT; + + /* write back to hardware memory */ + BD_CACHE_WRITEBACK_INVALIDATE((rt_uint32_t) curr_bd, + EMAC_BD_LENGTH_FOR_CACHE); + curr_bd->next = rxch->active_queue_head; + rxch->active_queue_head = curr_bd; + } + + /* At this point rxCppi->activeQueueHead points to the first + RX BD ready to be given to RX HDP and rxch->active_queue_tail + points to the last RX BD + */ + return 0; +} + + +/** + * emac_int_disable: Disable EMAC module interrupt + * @priv: The DaVinci EMAC driver private structure + * + * Disable EMAC interrupt + * + */ +static void emac_int_disable(struct emac_priv *priv) +{ + if (priv->version == EMAC_VERSION_2) { + unsigned long flags; + + rt_interrupt_enter(); + + /* Program C0_Int_En to zero to turn off + * interrupts to the CPU */ + emac_ctrl_write(EMAC_DM646X_CMRXINTEN, 0x0); + emac_ctrl_write(EMAC_DM646X_CMTXINTEN, 0x0); + /* NOTE: Rx Threshold and Misc interrupts are not disabled */ + + rt_interrupt_leave(); + + } else { + /* Set DM644x control registers for interrupt control */ + emac_ctrl_write(EMAC_CTRL_EWCTL, 0x0); + } +} + + +/** + * emac_int_enable: Enable EMAC module interrupt + * @priv: The DaVinci EMAC driver private structure + * + * Enable EMAC interrupt + * + */ +static void emac_int_enable(struct emac_priv *priv) +{ + if (priv->version == EMAC_VERSION_2) { + /*if (priv->int_enable) + priv->int_enable();*/ + + emac_ctrl_write(EMAC_DM646X_CMRXINTEN, 0xff); + emac_ctrl_write(EMAC_DM646X_CMTXINTEN, 0xff); + + /* In addition to turning on interrupt Enable, we need + * ack by writing appropriate values to the EOI + * register */ + + /* NOTE: Rx Threshold and Misc interrupts are not enabled */ + + /* ack rxen only then a new pulse will be generated */ + emac_write(EMAC_DM646X_MACEOIVECTOR, + EMAC_DM646X_MAC_EOI_C0_RXEN); + + /* ack txen- only then a new pulse will be generated */ + emac_write(EMAC_DM646X_MACEOIVECTOR, + EMAC_DM646X_MAC_EOI_C0_TXEN); + + } else { + /* Set DM644x control registers for interrupt control */ + emac_ctrl_write(EMAC_CTRL_EWCTL, 0x1); + } +} + + +/** + * emac_irq: EMAC interrupt handler + * @irq: interrupt number + * @param: EMAC isr parameters + * + */ +static void emac_irq(int irq, void *param) +{ + struct emac_priv *priv = param; + + ++priv->isr_count; + emac_int_disable(priv); + eth_device_ready(&priv->parent); +} + + + +/** + * emac_hw_enable: Enable EMAC hardware for packet transmission/reception + * @priv: The DaVinci EMAC private adapter structure + * + * Enables EMAC hardware for packet processing - enables PHY, enables RX + * for packet reception and enables device interrupts + * + * Returns success (0) or appropriate error code (none right now) + */ +static int emac_hw_enable(struct emac_priv *priv) +{ + rt_uint32_t ch, val, mbp_enable, mac_control; + + /* Soft reset */ + emac_write(EMAC_SOFTRESET, 1); + while (emac_read(EMAC_SOFTRESET)); + + /* Disable interrupt & Set pacing for more interrupts initially */ + emac_int_disable(priv); + + /* Full duplex enable bit set when auto negotiation happens */ + mac_control = + (((EMAC_DEF_TXPRIO_FIXED) ? (EMAC_MACCONTROL_TXPTYPE) : 0x0) | + ((priv->speed == 1000) ? EMAC_MACCONTROL_GIGABITEN : 0x0) | + ((EMAC_DEF_TXPACING_EN) ? (EMAC_MACCONTROL_TXPACEEN) : 0x0) | + ((priv->duplex == DUPLEX_FULL) ? 0x1 : 0)); + emac_write(EMAC_MACCONTROL, mac_control); + + mbp_enable = + (((EMAC_DEF_PASS_CRC) ? (EMAC_RXMBP_PASSCRC_MASK) : 0x0) | + ((EMAC_DEF_QOS_EN) ? (EMAC_RXMBP_QOSEN_MASK) : 0x0) | + ((EMAC_DEF_NO_BUFF_CHAIN) ? (EMAC_RXMBP_NOCHAIN_MASK) : 0x0) | + ((EMAC_DEF_MACCTRL_FRAME_EN) ? (EMAC_RXMBP_CMFEN_MASK) : 0x0) | + ((EMAC_DEF_SHORT_FRAME_EN) ? (EMAC_RXMBP_CSFEN_MASK) : 0x0) | + ((EMAC_DEF_ERROR_FRAME_EN) ? (EMAC_RXMBP_CEFEN_MASK) : 0x0) | + ((EMAC_DEF_PROM_EN) ? (EMAC_RXMBP_CAFEN_MASK) : 0x0) | + ((EMAC_DEF_PROM_CH & EMAC_RXMBP_CHMASK) << \ + EMAC_RXMBP_PROMCH_SHIFT) | + ((EMAC_DEF_BCAST_EN) ? (EMAC_RXMBP_BROADEN_MASK) : 0x0) | + ((EMAC_DEF_BCAST_CH & EMAC_RXMBP_CHMASK) << \ + EMAC_RXMBP_BROADCH_SHIFT) | + ((EMAC_DEF_MCAST_EN) ? (EMAC_RXMBP_MULTIEN_MASK) : 0x0) | + ((EMAC_DEF_MCAST_CH & EMAC_RXMBP_CHMASK) << \ + EMAC_RXMBP_MULTICH_SHIFT)); + emac_write(EMAC_RXMBPENABLE, mbp_enable); + emac_write(EMAC_RXMAXLEN, (EMAC_DEF_MAX_FRAME_SIZE & + EMAC_RX_MAX_LEN_MASK)); + emac_write(EMAC_RXBUFFEROFFSET, (EMAC_DEF_BUFFER_OFFSET & + EMAC_RX_BUFFER_OFFSET_MASK)); + emac_write(EMAC_RXFILTERLOWTHRESH, 0); + emac_write(EMAC_RXUNICASTCLEAR, EMAC_RX_UNICAST_CLEAR_ALL); + priv->rx_addr_type = (emac_read(EMAC_MACCONFIG) >> 8) & 0xFF; + + val = emac_read(EMAC_TXCONTROL); + val |= EMAC_TX_CONTROL_TX_ENABLE_VAL; + emac_write(EMAC_TXCONTROL, val); + val = emac_read(EMAC_RXCONTROL); + val |= EMAC_RX_CONTROL_RX_ENABLE_VAL; + emac_write(EMAC_RXCONTROL, val); + emac_write(EMAC_MACINTMASKSET, EMAC_MAC_HOST_ERR_INTMASK_VAL); + + for (ch = 0; ch < EMAC_DEF_MAX_TX_CH; ch++) { + emac_write(EMAC_TXHDP(ch), 0); + emac_write(EMAC_TXINTMASKSET, BIT(ch)); + } + for (ch = 0; ch < EMAC_DEF_MAX_RX_CH; ch++) { + struct emac_rxch *rxch = priv->rxch[ch]; + emac_setmac(priv, ch, rxch->mac_addr); + emac_write(EMAC_RXINTMASKSET, BIT(ch)); + rxch->queue_active = 1; + emac_write(EMAC_RXHDP(ch), + rxch->active_queue_head); /* physcal addr */ + } + + /* Enable MII */ + val = emac_read(EMAC_MACCONTROL); + val |= (EMAC_MACCONTROL_GMIIEN); + emac_write(EMAC_MACCONTROL, val); + + /* Enable interrupts */ + emac_int_enable(priv); + return 0; + +} + +/** + * emac_dev_getnetstats: EMAC get statistics function + * @ndev: The DaVinci EMAC network adapter + * + * Called when system wants to get statistics from the device. + * + * We return the statistics in net_device_stats structure pulled from emac + */ +static struct net_device_stats *emac_dev_getnetstats(struct emac_priv *priv) +{ + rt_uint32_t mac_control; + rt_uint32_t stats_clear_mask; + + /* update emac hardware stats and reset the registers*/ + + mac_control = emac_read(EMAC_MACCONTROL); + + if (mac_control & EMAC_MACCONTROL_GMIIEN) + stats_clear_mask = EMAC_STATS_CLR_MASK; + else + stats_clear_mask = 0; + + priv->net_dev_stats.multicast += emac_read(EMAC_RXMCASTFRAMES); + emac_write(EMAC_RXMCASTFRAMES, stats_clear_mask); + + priv->net_dev_stats.collisions += (emac_read(EMAC_TXCOLLISION) + + emac_read(EMAC_TXSINGLECOLL) + + emac_read(EMAC_TXMULTICOLL)); + emac_write(EMAC_TXCOLLISION, stats_clear_mask); + emac_write(EMAC_TXSINGLECOLL, stats_clear_mask); + emac_write(EMAC_TXMULTICOLL, stats_clear_mask); + + priv->net_dev_stats.rx_length_errors += (emac_read(EMAC_RXOVERSIZED) + + emac_read(EMAC_RXJABBER) + + emac_read(EMAC_RXUNDERSIZED)); + emac_write(EMAC_RXOVERSIZED, stats_clear_mask); + emac_write(EMAC_RXJABBER, stats_clear_mask); + emac_write(EMAC_RXUNDERSIZED, stats_clear_mask); + + priv->net_dev_stats.rx_over_errors += (emac_read(EMAC_RXSOFOVERRUNS) + + emac_read(EMAC_RXMOFOVERRUNS)); + emac_write(EMAC_RXSOFOVERRUNS, stats_clear_mask); + emac_write(EMAC_RXMOFOVERRUNS, stats_clear_mask); + + priv->net_dev_stats.rx_fifo_errors += emac_read(EMAC_RXDMAOVERRUNS); + emac_write(EMAC_RXDMAOVERRUNS, stats_clear_mask); + + priv->net_dev_stats.tx_carrier_errors += + emac_read(EMAC_TXCARRIERSENSE); + emac_write(EMAC_TXCARRIERSENSE, stats_clear_mask); + + priv->net_dev_stats.tx_fifo_errors = emac_read(EMAC_TXUNDERRUN); + emac_write(EMAC_TXUNDERRUN, stats_clear_mask); + + return &priv->net_dev_stats; +} + + +/* RT-Thread Device Interface */ +/* initialize the interface */ + +static rt_err_t rt_davinci_emac_init(rt_device_t dev) +{ + struct emac_priv *priv = dev->user_data; + unsigned long paddr; + rt_uint32_t ch, rc; + int i; + + /* Configuration items */ + priv->rx_buf_size = EMAC_DEF_MAX_FRAME_SIZE + NET_IP_ALIGN; + + /* Clear basic hardware */ + for (ch = 0; ch < EMAC_MAX_TXRX_CHANNELS; ch++) { + emac_write(EMAC_TXHDP(ch), 0); + emac_write(EMAC_RXHDP(ch), 0); + emac_write(EMAC_RXHDP(ch), 0); + emac_write(EMAC_RXINTMASKCLEAR, EMAC_INT_MASK_CLEAR); + emac_write(EMAC_TXINTMASKCLEAR, EMAC_INT_MASK_CLEAR); + } + priv->mac_hash1 = 0; + priv->mac_hash2 = 0; + emac_write(EMAC_MACHASH1, 0); + emac_write(EMAC_MACHASH2, 0); + + /* multi ch not supported - open 1 TX, 1RX ch by default */ + rc = emac_init_txch(priv, EMAC_DEF_TX_CH); + if (0 != rc) { + rt_kprintf("DaVinci EMAC: emac_init_txch() failed"); + return rc; + } + rc = emac_init_rxch(priv, EMAC_DEF_RX_CH, priv->mac_addr); + if (0 != rc) { + rt_kprintf("DaVinci EMAC: emac_init_rxch() failed"); + return rc; + } + + rt_hw_interrupt_install(IRQ_DM365_EMAC_RXPULSE, emac_irq, + (void *)priv, "EMAC_RXPULSE"); + rt_hw_interrupt_umask(IRQ_DM365_EMAC_RXPULSE); + rt_hw_interrupt_install(IRQ_DM365_EMAC_TXPULSE, emac_irq, + (void *)priv, "EMAC_TXPULSE"); + rt_hw_interrupt_umask(IRQ_DM365_EMAC_TXPULSE); + rt_hw_interrupt_install(IRQ_DM365_EMAC_RXTHRESH, emac_irq, + (void *)priv, "EMAC_RXTHRESH"); + rt_hw_interrupt_umask(IRQ_DM365_EMAC_RXTHRESH); + rt_hw_interrupt_install(IRQ_DM365_EMAC_MISCPULSE, emac_irq, + (void *)priv, "EMAC_MISCPULSE"); + rt_hw_interrupt_umask(IRQ_DM365_EMAC_MISCPULSE); + + emac_mii_reset(priv); + davinci_emac_phy_init(dev); + + /* Start/Enable EMAC hardware */ + emac_hw_enable(priv); + + rt_timer_init(&priv->timer, "link_timer", + davinci_emac_update_link, + (void *)priv, + RT_TICK_PER_SECOND, + RT_TIMER_FLAG_PERIODIC); + + rt_timer_start(&priv->timer); + rt_kprintf("davinci emac initialized\n"); + + return RT_EOK; +} + +static rt_err_t rt_davinci_emac_open(rt_device_t dev, rt_uint16_t oflag) +{ + return RT_EOK; +} + +static rt_err_t rt_davinci_emac_close(rt_device_t dev) +{ + return RT_EOK; +} + +static rt_size_t rt_davinci_emac_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size) +{ + rt_set_errno(-RT_ENOSYS); + return 0; +} + +static rt_size_t rt_davinci_emac_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size) +{ + rt_set_errno(-RT_ENOSYS); + return 0; +} + +static rt_err_t rt_davinci_emac_control(rt_device_t dev, rt_uint8_t cmd, void *args) +{ + struct emac_priv *priv = dev->user_data; + switch(cmd) + { + case NIOCTL_GADDR: + /* get mac address */ + if(args) rt_memcpy(args, priv->mac_addr, 6); + else return -RT_ERROR; + break; + + default : + break; + } + + return RT_EOK; +} + +void dm365_emac_gpio_init(void) +{ + rt_uint32_t arm_intmux; + + /* + * EMAC interrupts are multiplexed with GPIO interrupts + * Details are available at the DM365 ARM + * Subsystem Users Guide(sprufg5.pdf) pages 133 - 134 + */ + arm_intmux = davinci_readl(DM365_ARM_INTMUX); + arm_intmux |= (1 << 14)|(1 << 15)|(1 << 16)|(1 << 17); + davinci_writel(arm_intmux, DM365_ARM_INTMUX); +} + +void rt_hw_davinci_emac_init() +{ + struct emac_priv *priv = &davinci_emac_device; + struct clk *emac_clk; + emac_clk = clk_get("EMACCLK"); + emac_bus_frequency = clk_get_rate(emac_clk); + psc_change_state(DAVINCI_DM365_LPSC_CPGMAC, PSC_ENABLE); + dm365_emac_gpio_init(); + rt_memset(&davinci_emac_device, 0, sizeof(davinci_emac_device)); + davinci_emac_device.emac_base = DM365_EMAC_CNTRL_BASE; + davinci_emac_device.ctrl_base = DM365_EMAC_WRAP_CNTRL_BASE; + davinci_emac_device.ctrl_ram_size = DM365_EMAC_CNTRL_RAM_SIZE; + davinci_emac_device.emac_ctrl_ram = DM365_EMAC_WRAP_RAM_BASE; + davinci_emac_device.mdio_base = DM365_EMAC_MDIO_BASE; + davinci_emac_device.version = EMAC_VERSION_2; + davinci_emac_device.rmii_en = 0; + davinci_emac_device.phy_addr = 0x09; + rt_sem_init(&sem_ack, "tx_ack", 0, RT_IPC_FLAG_FIFO); + rt_sem_init(&priv->tx_lock, "tx_lock", 1, RT_IPC_FLAG_FIFO); + rt_sem_init(&priv->rx_lock, "rx_lock", 1, RT_IPC_FLAG_FIFO); + + davinci_emac_device.mac_addr[0] = 0x00; + davinci_emac_device.mac_addr[1] = 0x60; + davinci_emac_device.mac_addr[2] = 0x6E; + davinci_emac_device.mac_addr[3] = 0x11; + davinci_emac_device.mac_addr[4] = 0x22; + davinci_emac_device.mac_addr[5] = 0x33; + + davinci_emac_device.parent.parent.init = rt_davinci_emac_init; + davinci_emac_device.parent.parent.open = rt_davinci_emac_open; + davinci_emac_device.parent.parent.close = rt_davinci_emac_close; + davinci_emac_device.parent.parent.read = rt_davinci_emac_read; + davinci_emac_device.parent.parent.write = rt_davinci_emac_write; + davinci_emac_device.parent.parent.control = rt_davinci_emac_control; + davinci_emac_device.parent.parent.user_data = &davinci_emac_device; + + davinci_emac_device.parent.eth_rx = rt_davinci_emac_rx; + davinci_emac_device.parent.eth_tx = rt_davinci_emac_tx; + + eth_device_init(&(davinci_emac_device.parent), "e0"); + +} + + +#ifdef RT_USING_FINSH +#include + +void dump_emac_stats(void) +{ + int i; + struct emac_priv *emac; + struct net_device_stats *stats; + rt_device_t dev = rt_device_find("e0"); + + if(dev == RT_NULL) + return; + + emac = (struct emac_priv *)dev->user_data; + + stats = emac_dev_getnetstats(emac); + rt_kprintf("rx_packets = %d\n" + "tx_packets = %d\n" + "rx_bytes = %d\n" + "tx_bytes = %d\n" + "rx_errors = %d\n" + "tx_errors = %d\n" + "rx_dropped = %d\n" + "tx_dropped = %d\n" + "multicast = %d\n" + "collisions = %d\n", + stats->rx_packets, + stats->tx_packets, + stats->rx_bytes, + stats->tx_bytes, + stats->rx_errors, + stats->tx_errors, + stats->rx_dropped, + stats->tx_dropped, + stats->multicast, + stats->collisions); + + rt_kprintf("rx_length_errors = %d\n" + "rx_over_errors = %d\n" + "rx_crc_errors = %d\n" + "rx_frame_errors = %d\n" + "rx_fifo_errors = %d\n" + "rx_missed_errors = %d\n", + stats->rx_length_errors, + stats->rx_over_errors, + stats->rx_crc_errors, + stats->rx_frame_errors, + stats->rx_fifo_errors, + stats->rx_missed_errors); + + rt_kprintf("tx_aborted_errors = %d\n" + "tx_carrier_errors = %d\n" + "tx_fifo_errors = %d\n" + "tx_heartbeat_errors = %d\n" + "tx_window_errors = %d\n", + stats->tx_aborted_errors, + stats->tx_carrier_errors, + stats->tx_fifo_errors, + stats->tx_heartbeat_errors, + stats->tx_window_errors); + + rt_kprintf("rx_compressed = %d\n" + "tx_compressed = %d\n", + stats->rx_compressed, + stats->tx_compressed); + + rt_kprintf("\n"); +} + +FINSH_FUNCTION_EXPORT(dump_emac_stats, dump emac statistics); + +#ifdef FINSH_USING_MSH +int cmd_dump_emac_stats(int argc, char** argv) +{ + dump_emac_stats(); + return 0; +} +FINSH_FUNCTION_EXPORT_ALIAS(cmd_dump_emac_stats, __cmd_dump_emac_stats, dump emac statistics.); +#endif + +#endif diff --git a/bsp/dm365/drivers/davinci_emac.h b/bsp/dm365/drivers/davinci_emac.h new file mode 100644 index 0000000000000000000000000000000000000000..026323c286855729afebe64b5b79bd21d8ced265 --- /dev/null +++ b/bsp/dm365/drivers/davinci_emac.h @@ -0,0 +1,478 @@ +/* + * File : davinci_emac.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2013-01-30 weety first version + */ + +#ifndef _DAVINCI_EMAC_H +#define _DAVINCI_EMAC_H +#include + +#ifndef NET_IP_ALIGN +#define NET_IP_ALIGN 2 +#endif + +enum { + EMAC_VERSION_1, /* DM644x */ + EMAC_VERSION_2, /* DM646x */ +}; + + +#define __iomem + +#define BIT(nr) (1UL << (nr)) + + +/* Configuration items */ +#define EMAC_DEF_PASS_CRC (0) /* Do not pass CRC upto frames */ +#define EMAC_DEF_QOS_EN (0) /* EMAC proprietary QoS disabled */ +#define EMAC_DEF_NO_BUFF_CHAIN (0) /* No buffer chain */ +#define EMAC_DEF_MACCTRL_FRAME_EN (0) /* Discard Maccontrol frames */ +#define EMAC_DEF_SHORT_FRAME_EN (0) /* Discard short frames */ +#define EMAC_DEF_ERROR_FRAME_EN (0) /* Discard error frames */ +#define EMAC_DEF_PROM_EN (0) /* Promiscous disabled */ +#define EMAC_DEF_PROM_CH (0) /* Promiscous channel is 0 */ +#define EMAC_DEF_BCAST_EN (1) /* Broadcast enabled */ +#define EMAC_DEF_BCAST_CH (0) /* Broadcast channel is 0 */ +#define EMAC_DEF_MCAST_EN (1) /* Multicast enabled */ +#define EMAC_DEF_MCAST_CH (0) /* Multicast channel is 0 */ + +#define EMAC_DEF_TXPRIO_FIXED (1) /* TX Priority is fixed */ +#define EMAC_DEF_TXPACING_EN (0) /* TX pacing NOT supported*/ + +#define EMAC_DEF_BUFFER_OFFSET (0) /* Buffer offset to DMA (future) */ +#define EMAC_DEF_MIN_ETHPKTSIZE (60) /* Minimum ethernet pkt size */ +#define EMAC_DEF_MAX_FRAME_SIZE (1500 + 14 + 4 + 4) +#define EMAC_DEF_TX_CH (0) /* Default 0th channel */ +#define EMAC_DEF_RX_CH (0) /* Default 0th channel */ +#define EMAC_DEF_MDIO_TICK_MS (10) /* typically 1 tick=1 ms) */ +#define EMAC_DEF_MAX_TX_CH (1) /* Max TX channels configured */ +#define EMAC_DEF_MAX_RX_CH (1) /* Max RX channels configured */ +#define EMAC_POLL_WEIGHT (64) /* Default NAPI poll weight */ + +/* Buffer descriptor parameters */ +#define EMAC_DEF_TX_MAX_SERVICE (32) /* TX max service BD's */ +#define EMAC_DEF_RX_MAX_SERVICE (64) /* should = netdev->weight */ + +/* EMAC register related defines */ +#define EMAC_ALL_MULTI_REG_VALUE (0xFFFFFFFF) +#define EMAC_NUM_MULTICAST_BITS (64) +#define EMAC_TEARDOWN_VALUE (0xFFFFFFFC) +#define EMAC_TX_CONTROL_TX_ENABLE_VAL (0x1) +#define EMAC_RX_CONTROL_RX_ENABLE_VAL (0x1) +#define EMAC_MAC_HOST_ERR_INTMASK_VAL (0x2) +#define EMAC_RX_UNICAST_CLEAR_ALL (0xFF) +#define EMAC_INT_MASK_CLEAR (0xFF) + +/* RX MBP register bit positions */ +#define EMAC_RXMBP_PASSCRC_MASK BIT(30) +#define EMAC_RXMBP_QOSEN_MASK BIT(29) +#define EMAC_RXMBP_NOCHAIN_MASK BIT(28) +#define EMAC_RXMBP_CMFEN_MASK BIT(24) +#define EMAC_RXMBP_CSFEN_MASK BIT(23) +#define EMAC_RXMBP_CEFEN_MASK BIT(22) +#define EMAC_RXMBP_CAFEN_MASK BIT(21) +#define EMAC_RXMBP_PROMCH_SHIFT (16) +#define EMAC_RXMBP_PROMCH_MASK (0x7 << 16) +#define EMAC_RXMBP_BROADEN_MASK BIT(13) +#define EMAC_RXMBP_BROADCH_SHIFT (8) +#define EMAC_RXMBP_BROADCH_MASK (0x7 << 8) +#define EMAC_RXMBP_MULTIEN_MASK BIT(5) +#define EMAC_RXMBP_MULTICH_SHIFT (0) +#define EMAC_RXMBP_MULTICH_MASK (0x7) +#define EMAC_RXMBP_CHMASK (0x7) + +/* EMAC register definitions/bit maps used */ +# define EMAC_MBP_RXPROMISC (0x00200000) +# define EMAC_MBP_PROMISCCH(ch) (((ch) & 0x7) << 16) +# define EMAC_MBP_RXBCAST (0x00002000) +# define EMAC_MBP_BCASTCHAN(ch) (((ch) & 0x7) << 8) +# define EMAC_MBP_RXMCAST (0x00000020) +# define EMAC_MBP_MCASTCHAN(ch) ((ch) & 0x7) + +/* EMAC mac_control register */ +#define EMAC_MACCONTROL_TXPTYPE BIT(9) +#define EMAC_MACCONTROL_TXPACEEN BIT(6) +#define EMAC_MACCONTROL_GMIIEN BIT(5) +#define EMAC_MACCONTROL_GIGABITEN BIT(7) +#define EMAC_MACCONTROL_FULLDUPLEXEN BIT(0) +#define EMAC_MACCONTROL_RMIISPEED_MASK BIT(15) + +/* GIGABIT MODE related bits */ +#define EMAC_DM646X_MACCONTORL_GIG BIT(7) +#define EMAC_DM646X_MACCONTORL_GIGFORCE BIT(17) + +/* EMAC mac_status register */ +#define EMAC_MACSTATUS_TXERRCODE_MASK (0xF00000) +#define EMAC_MACSTATUS_TXERRCODE_SHIFT (20) +#define EMAC_MACSTATUS_TXERRCH_MASK (0x7) +#define EMAC_MACSTATUS_TXERRCH_SHIFT (16) +#define EMAC_MACSTATUS_RXERRCODE_MASK (0xF000) +#define EMAC_MACSTATUS_RXERRCODE_SHIFT (12) +#define EMAC_MACSTATUS_RXERRCH_MASK (0x7) +#define EMAC_MACSTATUS_RXERRCH_SHIFT (8) + +/* EMAC RX register masks */ +#define EMAC_RX_MAX_LEN_MASK (0xFFFF) +#define EMAC_RX_BUFFER_OFFSET_MASK (0xFFFF) + +/* MAC_IN_VECTOR (0x180) register bit fields */ +#define EMAC_DM644X_MAC_IN_VECTOR_HOST_INT BIT(17) +#define EMAC_DM644X_MAC_IN_VECTOR_STATPEND_INT BIT(16) +#define EMAC_DM644X_MAC_IN_VECTOR_RX_INT_VEC BIT(8) +#define EMAC_DM644X_MAC_IN_VECTOR_TX_INT_VEC BIT(0) + +/** NOTE:: For DM646x the IN_VECTOR has changed */ +#define EMAC_DM646X_MAC_IN_VECTOR_RX_INT_VEC BIT(EMAC_DEF_RX_CH) +#define EMAC_DM646X_MAC_IN_VECTOR_TX_INT_VEC BIT(16 + EMAC_DEF_TX_CH) +#define EMAC_DM646X_MAC_IN_VECTOR_HOST_INT BIT(26) +#define EMAC_DM646X_MAC_IN_VECTOR_STATPEND_INT BIT(27) + +/* CPPI bit positions */ +#define EMAC_CPPI_SOP_BIT BIT(31) +#define EMAC_CPPI_EOP_BIT BIT(30) +#define EMAC_CPPI_OWNERSHIP_BIT BIT(29) +#define EMAC_CPPI_EOQ_BIT BIT(28) +#define EMAC_CPPI_TEARDOWN_COMPLETE_BIT BIT(27) +#define EMAC_CPPI_PASS_CRC_BIT BIT(26) +#define EMAC_RX_BD_BUF_SIZE (0xFFFF) +#define EMAC_BD_LENGTH_FOR_CACHE (16) /* only CPPI bytes */ +#define EMAC_RX_BD_PKT_LENGTH_MASK (0xFFFF) + +/* Max hardware defines */ +#define EMAC_MAX_TXRX_CHANNELS (8) /* Max hardware channels */ +#define EMAC_DEF_MAX_MULTICAST_ADDRESSES (64) /* Max mcast addr's */ + +/* EMAC Peripheral Device Register Memory Layout structure */ +#define EMAC_TXIDVER 0x0 +#define EMAC_TXCONTROL 0x4 +#define EMAC_TXTEARDOWN 0x8 +#define EMAC_RXIDVER 0x10 +#define EMAC_RXCONTROL 0x14 +#define EMAC_RXTEARDOWN 0x18 +#define EMAC_TXINTSTATRAW 0x80 +#define EMAC_TXINTSTATMASKED 0x84 +#define EMAC_TXINTMASKSET 0x88 +#define EMAC_TXINTMASKCLEAR 0x8C +#define EMAC_MACINVECTOR 0x90 + +#define EMAC_DM646X_MACEOIVECTOR 0x94 + +#define EMAC_RXINTSTATRAW 0xA0 +#define EMAC_RXINTSTATMASKED 0xA4 +#define EMAC_RXINTMASKSET 0xA8 +#define EMAC_RXINTMASKCLEAR 0xAC +#define EMAC_MACINTSTATRAW 0xB0 +#define EMAC_MACINTSTATMASKED 0xB4 +#define EMAC_MACINTMASKSET 0xB8 +#define EMAC_MACINTMASKCLEAR 0xBC + +#define EMAC_RXMBPENABLE 0x100 +#define EMAC_RXUNICASTSET 0x104 +#define EMAC_RXUNICASTCLEAR 0x108 +#define EMAC_RXMAXLEN 0x10C +#define EMAC_RXBUFFEROFFSET 0x110 +#define EMAC_RXFILTERLOWTHRESH 0x114 + +#define EMAC_MACCONTROL 0x160 +#define EMAC_MACSTATUS 0x164 +#define EMAC_EMCONTROL 0x168 +#define EMAC_FIFOCONTROL 0x16C +#define EMAC_MACCONFIG 0x170 +#define EMAC_SOFTRESET 0x174 +#define EMAC_MACSRCADDRLO 0x1D0 +#define EMAC_MACSRCADDRHI 0x1D4 +#define EMAC_MACHASH1 0x1D8 +#define EMAC_MACHASH2 0x1DC +#define EMAC_MACADDRLO 0x500 +#define EMAC_MACADDRHI 0x504 +#define EMAC_MACINDEX 0x508 + +/* EMAC HDP and Completion registors */ +#define EMAC_TXHDP(ch) (0x600 + (ch * 4)) +#define EMAC_RXHDP(ch) (0x620 + (ch * 4)) +#define EMAC_TXCP(ch) (0x640 + (ch * 4)) +#define EMAC_RXCP(ch) (0x660 + (ch * 4)) + +/* EMAC statistics registers */ +#define EMAC_RXGOODFRAMES 0x200 +#define EMAC_RXBCASTFRAMES 0x204 +#define EMAC_RXMCASTFRAMES 0x208 +#define EMAC_RXPAUSEFRAMES 0x20C +#define EMAC_RXCRCERRORS 0x210 +#define EMAC_RXALIGNCODEERRORS 0x214 +#define EMAC_RXOVERSIZED 0x218 +#define EMAC_RXJABBER 0x21C +#define EMAC_RXUNDERSIZED 0x220 +#define EMAC_RXFRAGMENTS 0x224 +#define EMAC_RXFILTERED 0x228 +#define EMAC_RXQOSFILTERED 0x22C +#define EMAC_RXOCTETS 0x230 +#define EMAC_TXGOODFRAMES 0x234 +#define EMAC_TXBCASTFRAMES 0x238 +#define EMAC_TXMCASTFRAMES 0x23C +#define EMAC_TXPAUSEFRAMES 0x240 +#define EMAC_TXDEFERRED 0x244 +#define EMAC_TXCOLLISION 0x248 +#define EMAC_TXSINGLECOLL 0x24C +#define EMAC_TXMULTICOLL 0x250 +#define EMAC_TXEXCESSIVECOLL 0x254 +#define EMAC_TXLATECOLL 0x258 +#define EMAC_TXUNDERRUN 0x25C +#define EMAC_TXCARRIERSENSE 0x260 +#define EMAC_TXOCTETS 0x264 +#define EMAC_NETOCTETS 0x280 +#define EMAC_RXSOFOVERRUNS 0x284 +#define EMAC_RXMOFOVERRUNS 0x288 +#define EMAC_RXDMAOVERRUNS 0x28C + +/* EMAC DM644x control registers */ +#define EMAC_CTRL_EWCTL (0x4) +#define EMAC_CTRL_EWINTTCNT (0x8) + +/* EMAC MDIO related */ +/* Mask & Control defines */ +#define MDIO_CONTROL_CLKDIV (0xFF) +#define MDIO_CONTROL_ENABLE BIT(30) +#define MDIO_USERACCESS_GO BIT(31) +#define MDIO_USERACCESS_WRITE BIT(30) +#define MDIO_USERACCESS_READ (0) +#define MDIO_USERACCESS_REGADR (0x1F << 21) +#define MDIO_USERACCESS_PHYADR (0x1F << 16) +#define MDIO_USERACCESS_DATA (0xFFFF) +#define MDIO_USERPHYSEL_LINKSEL BIT(7) +#define MDIO_VER_MODID (0xFFFF << 16) +#define MDIO_VER_REVMAJ (0xFF << 8) +#define MDIO_VER_REVMIN (0xFF) + +#define MDIO_USERACCESS(inst) (0x80 + (inst * 8)) +#define MDIO_USERPHYSEL(inst) (0x84 + (inst * 8)) +#define MDIO_CONTROL (0x04) + +/* EMAC DM646X control module registers */ +#define EMAC_DM646X_CMRXINTEN (0x14) +#define EMAC_DM646X_CMTXINTEN (0x18) + +/* EMAC EOI codes for C0 */ +#define EMAC_DM646X_MAC_EOI_C0_RXEN (0x01) +#define EMAC_DM646X_MAC_EOI_C0_TXEN (0x02) + +/* EMAC Stats Clear Mask */ +#define EMAC_STATS_CLR_MASK (0xFFFFFFFF) + +/** net_buf_obj: EMAC network bufferdata structure + * + * EMAC network buffer data structure + */ +struct emac_netbufobj { + void *buf_token; + char *data_ptr; + int length; +}; + +/** net_pkt_obj: EMAC network packet data structure + * + * EMAC network packet data structure - supports buffer list (for future) + */ +struct emac_netpktobj { + void *pkt_token; /* data token may hold tx/rx chan id */ + struct emac_netbufobj *buf_list; /* array of network buffer objects */ + int num_bufs; + int pkt_length; +}; + +/** emac_tx_bd: EMAC TX Buffer descriptor data structure + * + * EMAC TX Buffer descriptor data structure + */ +struct emac_tx_bd { + int h_next; + int buff_ptr; + int off_b_len; + int mode; /* SOP, EOP, ownership, EOQ, teardown,Qstarv, length */ + struct emac_tx_bd __iomem *next; + void *buf_token; +}; + +/** emac_txch: EMAC TX Channel data structure + * + * EMAC TX Channel data structure + */ +struct emac_txch { + /* Config related */ + rt_uint32_t num_bd; + rt_uint32_t service_max; + + /* CPPI specific */ + rt_uint32_t alloc_size; + void __iomem *bd_mem; + struct emac_tx_bd __iomem *bd_pool_head; + struct emac_tx_bd __iomem *active_queue_head; + struct emac_tx_bd __iomem *active_queue_tail; + struct emac_tx_bd __iomem *last_hw_bdprocessed; + rt_uint32_t queue_active; + rt_uint32_t teardown_pending; + rt_uint32_t *tx_complete; + + /** statistics */ + rt_uint32_t proc_count; /* TX: # of times emac_tx_bdproc is called */ + rt_uint32_t mis_queued_packets; + rt_uint32_t queue_reinit; + rt_uint32_t end_of_queue_add; + rt_uint32_t out_of_tx_bd; + rt_uint32_t no_active_pkts; /* IRQ when there were no packets to process */ + rt_uint32_t active_queue_count; +}; + +/** emac_rx_bd: EMAC RX Buffer descriptor data structure + * + * EMAC RX Buffer descriptor data structure + */ +struct emac_rx_bd { + int h_next; + int buff_ptr; + int off_b_len; + int mode; + struct emac_rx_bd __iomem *next; + void *data_ptr; + void *buf_token; +}; + +/** emac_rxch: EMAC RX Channel data structure + * + * EMAC RX Channel data structure + */ +struct emac_rxch { + /* configuration info */ + rt_uint32_t num_bd; + rt_uint32_t service_max; + rt_uint32_t buf_size; + char mac_addr[6]; + + /** CPPI specific */ + rt_uint32_t alloc_size; + void __iomem *bd_mem; + struct emac_rx_bd __iomem *bd_pool_head; + struct emac_rx_bd __iomem *active_queue_head; + struct emac_rx_bd __iomem *active_queue_tail; + rt_uint32_t queue_active; + rt_uint32_t teardown_pending; + + /* packet and buffer objects */ + struct emac_netpktobj pkt_queue; + struct emac_netbufobj buf_queue; + + /** statistics */ + rt_uint32_t proc_count; /* number of times emac_rx_bdproc is called */ + rt_uint32_t processed_bd; + rt_uint32_t recycled_bd; + rt_uint32_t out_of_rx_bd; + rt_uint32_t out_of_rx_buffers; + rt_uint32_t queue_reinit; + rt_uint32_t end_of_queue_add; + rt_uint32_t end_of_queue; + rt_uint32_t mis_queued_packets; +}; + +struct net_device_stats +{ + unsigned long rx_packets; /* total packets received */ + unsigned long tx_packets; /* total packets transmitted */ + unsigned long rx_bytes; /* total bytes received */ + unsigned long tx_bytes; /* total bytes transmitted */ + unsigned long rx_errors; /* bad packets received */ + unsigned long tx_errors; /* packet transmit problems */ + unsigned long rx_dropped; /* no space in linux buffers */ + unsigned long tx_dropped; /* no space available in linux */ + unsigned long multicast; /* multicast packets received */ + unsigned long collisions; + + /* detailed rx_errors: */ + unsigned long rx_length_errors; + unsigned long rx_over_errors; /* receiver ring buff overflow */ + unsigned long rx_crc_errors; /* recved pkt with crc error */ + unsigned long rx_frame_errors; /* recv'd frame alignment error */ + unsigned long rx_fifo_errors; /* recv'r fifo overrun */ + unsigned long rx_missed_errors; /* receiver missed packet */ + + /* detailed tx_errors */ + unsigned long tx_aborted_errors; + unsigned long tx_carrier_errors; + unsigned long tx_fifo_errors; + unsigned long tx_heartbeat_errors; + unsigned long tx_window_errors; + + /* for cslip etc */ + unsigned long rx_compressed; + unsigned long tx_compressed; +}; + + +/* emac_priv: EMAC private data structure + * + * EMAC adapter private data structure + */ +#define MAX_ADDR_LEN 6 + +struct emac_priv { + /* inherit from ethernet device */ + struct eth_device parent; + + /* interface address info. */ + rt_uint8_t mac_addr[MAX_ADDR_LEN]; /* hw address */ + unsigned short phy_addr; + + struct rt_semaphore tx_lock; + struct rt_semaphore rx_lock; + void __iomem *remap_addr; + rt_uint32_t emac_base_phys; + void __iomem *emac_base; + void __iomem *ctrl_base; + void __iomem *emac_ctrl_ram; + void __iomem *mdio_base; + rt_uint32_t ctrl_ram_size; + rt_uint32_t hw_ram_addr; + struct emac_txch *txch[EMAC_DEF_MAX_TX_CH]; + struct emac_rxch *rxch[EMAC_DEF_MAX_RX_CH]; + rt_uint32_t link; /* 1=link on, 0=link off */ + rt_uint32_t speed; /* 0=Auto Neg, 1=No PHY, 10,100, 1000 - mbps */ + rt_uint32_t duplex; /* Link duplex: 0=Half, 1=Full */ + rt_uint32_t rx_buf_size; + rt_uint32_t isr_count; + rt_uint8_t rmii_en; + rt_uint8_t version; + struct net_device_stats net_dev_stats; + rt_uint32_t mac_hash1; + rt_uint32_t mac_hash2; + rt_uint32_t multicast_hash_cnt[EMAC_NUM_MULTICAST_BITS]; + rt_uint32_t rx_addr_type; + /* periodic timer required for MDIO polling */ + struct rt_timer timer; + rt_uint32_t periodic_ticks; + rt_uint32_t timer_active; + rt_uint32_t phy_mask; + /* mii_bus,phy members */ + struct rt_semaphore lock; +}; + + +#endif /* _DAVINCI_EMAC_H */ + diff --git a/bsp/dm365/drivers/davinci_serial.c b/bsp/dm365/drivers/davinci_serial.c new file mode 100644 index 0000000000000000000000000000000000000000..9340befbcdbaeb45734113aeccf9540241d0f9b3 --- /dev/null +++ b/bsp/dm365/drivers/davinci_serial.c @@ -0,0 +1,261 @@ +/* + * File : davinci_serial.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#include +#include +#include +#include + +static struct rt_serial_device davinci_serial_dev0; + +static struct rt_serial_device davinci_serial_dev1; + + +#define LSR_DR 0x01 /* Data ready */ +#define LSR_THRE 0x20 /* Xmit holding register empty */ +//#define USTAT_TXB_EMPTY 0x02 /* tx buffer empty */ +#define BPS 115200 /* serial baudrate */ + +typedef struct uartport +{ + volatile rt_uint32_t rbr; + volatile rt_uint32_t ier; + volatile rt_uint32_t fcr; + volatile rt_uint32_t lcr; + volatile rt_uint32_t mcr; + volatile rt_uint32_t lsr; + volatile rt_uint32_t msr; + volatile rt_uint32_t scr; + volatile rt_uint32_t dll; + volatile rt_uint32_t dlh; + + volatile rt_uint32_t res[2]; + volatile rt_uint32_t pwremu_mgmt; + volatile rt_uint32_t mdr; +}uartport; + +#define thr rbr +#define iir fcr + +#define UART0 ((struct uartport *)DAVINCI_UART0_BASE) + +#define UART1 ((struct uartport *)DM365_UART1_BASE) + + +/** + * This function will handle serial + */ +void rt_davinci_serial_handler(int vector, void *param) +{ + struct rt_serial_device *dev = (struct rt_serial_device *)param; + rt_hw_serial_isr(dev, RT_SERIAL_EVENT_RX_IND); +} + +/** +* UART device in RT-Thread +*/ +static rt_err_t davinci_uart_configure(struct rt_serial_device *serial, + struct serial_configure *cfg) +{ + return RT_EOK; +} + +static rt_err_t davinci_uart_control(struct rt_serial_device *serial, + int cmd, void *arg) +{ + uartport *uart = serial->parent.user_data; + + switch (cmd) + { + case RT_DEVICE_CTRL_CLR_INT: + /* disable rx irq */ + if (uart == UART0) + rt_hw_interrupt_mask(IRQ_UARTINT0); + else if (uart == UART1) + rt_hw_interrupt_mask(IRQ_UARTINT1); + break; + case RT_DEVICE_CTRL_SET_INT: + /* enable rx irq */ + if (uart == UART0) + rt_hw_interrupt_umask(IRQ_UARTINT0); + else if (uart == UART1) + rt_hw_interrupt_umask(IRQ_UARTINT1); + break; + } + + return RT_EOK; +} + +static int davinci_uart_putc(struct rt_serial_device *serial, char c) +{ + rt_uint32_t level; + uartport *uart = serial->parent.user_data; + + while (!(uart->lsr & LSR_THRE)); + uart->thr = c; + + return 1; +} + +static int davinci_uart_getc(struct rt_serial_device *serial) +{ + int result; + uartport *uart = serial->parent.user_data; + + if (uart->lsr & LSR_DR) + { + result = uart->rbr & 0xff; + } + else + { + result = -1; + } + + return result; +} + +static const struct rt_uart_ops davinci_uart_ops = +{ + davinci_uart_configure, + davinci_uart_control, + davinci_uart_putc, + davinci_uart_getc, +}; + +void davinci_uart0_init(void) +{ + rt_uint32_t divisor; + + divisor = (24000000 + (115200 * (16 / 2))) / (16 * 115200); + UART0->ier = 0; + UART0->lcr = 0x83; //8N1 + UART0->dll = 0; + UART0->dlh = 0; + UART0->lcr = 0x03; + UART0->mcr = 0x03; //RTS,CTS + UART0->fcr = 0x07; //FIFO + UART0->lcr = 0x83; + UART0->dll = divisor & 0xff; + UART0->dlh = (divisor >> 8) & 0xff; + UART0->lcr = 0x03; + UART0->mdr = 0; //16x over-sampling + UART0->pwremu_mgmt = 0x6000; + rt_hw_interrupt_install(IRQ_UARTINT0, rt_davinci_serial_handler, + (void *)&davinci_serial_dev0, "UART0"); + rt_hw_interrupt_mask(IRQ_UARTINT0); + UART0->ier = 0x05; +} + +void davinci_uart_gpio_init() +{ + rt_uint32_t val; + + val = davinci_readl(PINMUX3); + val &= 0xf3ffffff; /* gio23 RS485_CTRL */ + val |= 0x60000000; /*UART1_TXD (gio25)*/ + davinci_writel(val, PINMUX3); + val = davinci_readl(PINMUX4); + val |= 0x0000c000; /* UART1_RXD (gio34) */ + davinci_writel(val, PINMUX4); + + val = davinci_readl(DAVINCI_GPIO_BASE + 0x10); + val &= ~(1 << 23); + davinci_writel(val, DAVINCI_GPIO_BASE + 0x10); + davinci_writel((1<<23), DAVINCI_GPIO_BASE + 0x1C); +} + +void davinci_uart1_init(void) +{ + rt_uint32_t divisor; + rt_uint32_t freq; + rt_uint32_t baudrate; + struct clk *clk; + + davinci_uart_gpio_init(); + psc_change_state(DAVINCI_DM365_LPSC_UART1, PSC_ENABLE); + clk = clk_get("UART1"); + freq = clk_get_rate(clk); + + baudrate = 9600; + divisor = (freq + (baudrate * (16 / 2))) / (16 * baudrate); + UART1->ier = 0; + UART1->lcr = 0x87; //8N2, 0x83 8N1 + UART1->dll = 0; + UART1->dlh = 0; + UART1->lcr = 0x07; + UART1->mcr = 0x03; //RTS,CTS + UART1->fcr = 0x07; //FIFO + UART1->lcr = 0x87; + UART1->dll = divisor & 0xff; + UART1->dlh = (divisor >> 8) & 0xff; + UART1->lcr = 0x07; + UART1->mdr = 0; //16x over-sampling + UART1->pwremu_mgmt = 0x6000; + + rt_hw_interrupt_install(IRQ_UARTINT1, rt_davinci_serial_handler, + (void *)&davinci_serial_dev1, "UART1"); + rt_hw_interrupt_mask(IRQ_UARTINT1); + UART1->ier = 0x05; +} + + +/** + * This function will handle init uart + */ +void rt_hw_uart_init(void) +{ + davinci_serial_dev0.ops = &davinci_uart_ops; + //davinci_serial_dev0.config = RT_SERIAL_CONFIG_DEFAULT; + davinci_serial_dev0.config.baud_rate = BAUD_RATE_115200; + davinci_serial_dev0.config.bit_order = BIT_ORDER_LSB; + davinci_serial_dev0.config.data_bits = DATA_BITS_8; + davinci_serial_dev0.config.parity = PARITY_NONE; + davinci_serial_dev0.config.stop_bits = STOP_BITS_1; + davinci_serial_dev0.config.invert = NRZ_NORMAL; + davinci_serial_dev0.config.bufsz = RT_SERIAL_RB_BUFSZ; + + /* register vcom device */ + rt_hw_serial_register(&davinci_serial_dev0, "uart0", + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, + UART0); + davinci_uart0_init(); + + davinci_serial_dev1.ops = &davinci_uart_ops; + //davinci_serial_dev1.config = RT_SERIAL_CONFIG_DEFAULT; + davinci_serial_dev1.config.baud_rate = BAUD_RATE_115200; + davinci_serial_dev1.config.bit_order = BIT_ORDER_LSB; + davinci_serial_dev1.config.data_bits = DATA_BITS_8; + davinci_serial_dev1.config.parity = PARITY_NONE; + davinci_serial_dev1.config.stop_bits = STOP_BITS_1; + davinci_serial_dev1.config.invert = NRZ_NORMAL; + davinci_serial_dev1.config.bufsz = RT_SERIAL_RB_BUFSZ; + + /* register vcom device */ + rt_hw_serial_register(&davinci_serial_dev1, "uart1", + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, + UART1); + davinci_uart1_init(); + +} + diff --git a/bsp/dm365/drivers/gpio.c b/bsp/dm365/drivers/gpio.c new file mode 100644 index 0000000000000000000000000000000000000000..6c1f6b05e1497e62957e0a197afe078eeb2b77ce --- /dev/null +++ b/bsp/dm365/drivers/gpio.c @@ -0,0 +1,176 @@ +/* + * File : gpio.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#include +#include "gpio.h" + +#define GPIO0_BASE (DAVINCI_GPIO_BASE + 0x10) +#define GPIO1_BASE (DAVINCI_GPIO_BASE + 0x38) +#define GPIO2_BASE (DAVINCI_GPIO_BASE + 0x60) +#define GPIO3_BASE (DAVINCI_GPIO_BASE + 0x88) + + +static unsigned int dm365_gpio_base = (unsigned int)GPIO0_BASE; + +#define GPIO_OE (dm365_gpio_base + 0x00) +#define GPIO_DATAIN (dm365_gpio_base + 0x10) +#define GPIO_DATAOUT (dm365_gpio_base + 0x04) +#define GPIO_CLROUT (dm365_gpio_base + 0x0C) +#define GPIO_SETOUT (dm365_gpio_base + 0x08) + +#define gpio_dirin(n) *(volatile unsigned int *)((GPIO_OE)) |= 1<<(n) +#define gpio_dirout(n) *(volatile unsigned int *)((GPIO_OE)) &= ~(1u<<(n)) +#define gpio_set(n) *(volatile unsigned int *)((GPIO_SETOUT)) = 1<<(n) +#define gpio_clr(n) *(volatile unsigned int *)((GPIO_CLROUT)) = 1<<(n) +#define gpio_get(n) ( ( *(volatile unsigned int *)((GPIO_DATAIN)) & (1<<(n)) ) ? 1 : 0 ) + + #define GPIO_GRP_MASK (5) + +static int gpio_to_base(unsigned int gpio) +{ + unsigned int grp_idx; + int ret; + + grp_idx = gpio >> GPIO_GRP_MASK; + + switch (grp_idx) { + case 0: + dm365_gpio_base = (unsigned int)GPIO0_BASE; + ret = 0; + break; + case 1: + dm365_gpio_base = (unsigned int)GPIO1_BASE; + ret = 0; + break; + case 2: + dm365_gpio_base = (unsigned int)GPIO2_BASE; + ret = 0; + break; + case 3: + dm365_gpio_base = (unsigned int)GPIO3_BASE; + ret = 0; + break; + default: + ret =-RT_EIO; + break; + } + return ret; +} + + +int gpio_direction_input(unsigned int gpio) +{ + unsigned int offset; + int ret=0; + + rt_ubase_t temp = rt_hw_interrupt_disable(); + ret = gpio_to_base(gpio); + if (ret < 0) { + goto gpio_free; + } + offset = gpio & ((1 << GPIO_GRP_MASK) -1); + + gpio_dirin(offset); + +gpio_free: + rt_hw_interrupt_enable(temp); + + return ret; +} + +int gpio_direction_output(unsigned int gpio, int value) +{ + unsigned int offset; + int ret=0; + + rt_ubase_t temp = rt_hw_interrupt_disable(); + ret = gpio_to_base(gpio); + if (ret < 0) { + goto gpio_free; + } + + offset = gpio & ((1 << GPIO_GRP_MASK) -1); + + if (value) { + gpio_set(offset); + } + else { + gpio_clr(offset); + } + + gpio_dirout(offset); + +gpio_free: + rt_hw_interrupt_enable(temp); + + return ret; +} + +int gpio_set_value(unsigned int gpio, int value) +{ + unsigned int offset; + int ret=0; + + rt_ubase_t temp = rt_hw_interrupt_disable(); + ret = gpio_to_base(gpio); + if (ret < 0) { + goto gpio_free; + } + + offset = gpio & ((1 << GPIO_GRP_MASK) -1); + + if (value) { + gpio_set(offset); + } + else { + gpio_clr(offset); + } + +gpio_free: + rt_hw_interrupt_enable(temp); + + return ret; +} + +int gpio_get_value(unsigned int gpio) +{ + unsigned int offset; + int ret=0; + + rt_ubase_t temp = rt_hw_interrupt_disable(); + ret = gpio_to_base(gpio); + if (ret < 0) { + goto gpio_free; + } + + offset = gpio & ((1 << GPIO_GRP_MASK) -1); + ret = gpio_get(offset); + +gpio_free: + rt_hw_interrupt_enable(temp); + + return ret; +} + + diff --git a/bsp/dm365/drivers/gpio.h b/bsp/dm365/drivers/gpio.h new file mode 100644 index 0000000000000000000000000000000000000000..c40798ed222289ddf7ab036f25a8170e00e2299d --- /dev/null +++ b/bsp/dm365/drivers/gpio.h @@ -0,0 +1,73 @@ +/* + * File : gpio.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#ifndef __DM365_GPIO_H +#define __DM365_GPIO_H +#include + +#define GPIO(X) (X) + + +#define get_io(r) *((volatile u_int *)(TI81XX_L4_SLOW_IO_ADDRESS(r))) +#define set_io(r,v) *((volatile u_int *)(TI81XX_L4_SLOW_IO_ADDRESS(r))) = (v) +#define and_io(r,v) *((volatile u_int *)(TI81XX_L4_SLOW_IO_ADDRESS(r))) &= (v) +#define or_io(r,v) *((volatile u_int *)(TI81XX_L4_SLOW_IO_ADDRESS(r))) |= (v) + +#define v_get_io(r) *((volatile u_int *)(r)) +#define v_set_io(r,v) *((volatile u_int *)(r)) = (v) +#define v_and_io(r,v) *((volatile u_int *)(r)) &= (v) +#define v_or_io(r,v) *((volatile u_int *)(r)) |= (v) + +enum gpio_intr_mode +{ + LEVELDETECT_LOW = 0, + LEVELDETECT_HIGH, + RISINGDETECT, + FALLINGDETECT, + EDGEDETECT //both rising-edge and falling-edge detect +}; + +enum gpio_intr_req +{ + INTR_REQ_A = 0, + INTR_REQ_B +}; + +enum gpio_intr_num +{ + GPIOINT0A = 96, + GPIOINT0B, + GPIOINT1A, + GPIOINT1B, +}; + +enum pin_func_mod +{ + GPIO_MOD = 0x80, + SPI_MOD =0x01, + VP_MOD=0x04, + IIC_MOD=0x20 +}; + +#endif /* __TI814X_GPIO_H */ diff --git a/bsp/dm365/drivers/i2c-davinci.c b/bsp/dm365/drivers/i2c-davinci.c new file mode 100644 index 0000000000000000000000000000000000000000..d77c31f69c30ec12f5866cd049293365d22f512b --- /dev/null +++ b/bsp/dm365/drivers/i2c-davinci.c @@ -0,0 +1,650 @@ +/* + * File : i2c-davinci.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#include +#include +#include + +/* ----- global defines ----------------------------------------------- */ +#define BIT(nr) (1UL << (nr)) + +#define DAVINCI_I2C_TIMEOUT (1*RT_TICK_PER_SECOND) +#define DAVINCI_I2C_MAX_TRIES 2 +#define I2C_DAVINCI_INTR_ALL (DAVINCI_I2C_IMR_AAS | \ + DAVINCI_I2C_IMR_SCD | \ + DAVINCI_I2C_IMR_ARDY | \ + DAVINCI_I2C_IMR_NACK | \ + DAVINCI_I2C_IMR_AL) + +#define DAVINCI_I2C_OAR_REG 0x00 +#define DAVINCI_I2C_IMR_REG 0x04 +#define DAVINCI_I2C_STR_REG 0x08 +#define DAVINCI_I2C_CLKL_REG 0x0c +#define DAVINCI_I2C_CLKH_REG 0x10 +#define DAVINCI_I2C_CNT_REG 0x14 +#define DAVINCI_I2C_DRR_REG 0x18 +#define DAVINCI_I2C_SAR_REG 0x1c +#define DAVINCI_I2C_DXR_REG 0x20 +#define DAVINCI_I2C_MDR_REG 0x24 +#define DAVINCI_I2C_IVR_REG 0x28 +#define DAVINCI_I2C_EMDR_REG 0x2c +#define DAVINCI_I2C_PSC_REG 0x30 + +#define DAVINCI_I2C_IVR_AAS 0x07 +#define DAVINCI_I2C_IVR_SCD 0x06 +#define DAVINCI_I2C_IVR_XRDY 0x05 +#define DAVINCI_I2C_IVR_RDR 0x04 +#define DAVINCI_I2C_IVR_ARDY 0x03 +#define DAVINCI_I2C_IVR_NACK 0x02 +#define DAVINCI_I2C_IVR_AL 0x01 + +#define DAVINCI_I2C_STR_BB BIT(12) +#define DAVINCI_I2C_STR_RSFULL BIT(11) +#define DAVINCI_I2C_STR_SCD BIT(5) +#define DAVINCI_I2C_STR_ARDY BIT(2) +#define DAVINCI_I2C_STR_NACK BIT(1) +#define DAVINCI_I2C_STR_AL BIT(0) + +#define DAVINCI_I2C_MDR_NACK BIT(15) +#define DAVINCI_I2C_MDR_STT BIT(13) +#define DAVINCI_I2C_MDR_STP BIT(11) +#define DAVINCI_I2C_MDR_MST BIT(10) +#define DAVINCI_I2C_MDR_TRX BIT(9) +#define DAVINCI_I2C_MDR_XA BIT(8) +#define DAVINCI_I2C_MDR_RM BIT(7) +#define DAVINCI_I2C_MDR_IRS BIT(5) + +#define DAVINCI_I2C_IMR_AAS BIT(6) +#define DAVINCI_I2C_IMR_SCD BIT(5) +#define DAVINCI_I2C_IMR_XRDY BIT(4) +#define DAVINCI_I2C_IMR_RRDY BIT(3) +#define DAVINCI_I2C_IMR_ARDY BIT(2) +#define DAVINCI_I2C_IMR_NACK BIT(1) +#define DAVINCI_I2C_IMR_AL BIT(0) + +#ifdef RT_EDMA_DEBUG +#define i2c_dbg(fmt, ...) rt_kprintf(fmt, ##__VA_ARGS__) +#else +#define i2c_dbg(fmt, ...) +#endif + + +struct davinci_i2c_dev { + void *base; + struct rt_semaphore completion; + struct clk *clk; + int cmd_err; + rt_uint8_t *buf; + rt_uint32_t buf_len; + int irq; + int stop; + rt_uint8_t terminate; + rt_uint32_t bus_freq; + rt_uint32_t bus_delay; + struct rt_i2c_bus_device *bus; +}; + +static inline void davinci_i2c_write_reg(struct davinci_i2c_dev *i2c_dev, + int reg, rt_uint16_t val) +{ + davinci_writew(val, i2c_dev->base + reg); +} + +static inline rt_uint16_t davinci_i2c_read_reg(struct davinci_i2c_dev *i2c_dev, int reg) +{ + return davinci_readw(i2c_dev->base + reg); +} + +static void udelay (rt_uint32_t us) +{ + rt_int32_t i; + for (; us > 0; us--) + { + i = 50000; + while(i > 0) + { + i--; + } + } +} + + +#if 0 +/* Generate a pulse on the i2c clock pin. */ +static void generic_i2c_clock_pulse(unsigned int scl_pin) +{ + rt_uint16_t i; + + if (scl_pin) { + /* Send high and low on the SCL line */ + for (i = 0; i < 9; i++) { + gpio_set_value(scl_pin, 0); + udelay(20); + gpio_set_value(scl_pin, 1); + udelay(20); + } + } +} +#endif + +/* This routine does i2c bus recovery as specified in the + * i2c protocol Rev. 03 section 3.16 titled "Bus clear" + */ +static void i2c_recover_bus(struct davinci_i2c_dev *dev) +{ + rt_uint32_t flag = 0; + + i2c_dbg("initiating i2c bus recovery\n"); + /* Send NACK to the slave */ + flag = davinci_i2c_read_reg(dev, DAVINCI_I2C_MDR_REG); + flag |= DAVINCI_I2C_MDR_NACK; + /* write the data into mode register */ + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); +#if 0 + if (pdata) + generic_i2c_clock_pulse(pdata->scl_pin); +#endif + /* Send STOP */ + flag = davinci_i2c_read_reg(dev, DAVINCI_I2C_MDR_REG); + flag |= DAVINCI_I2C_MDR_STP; + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); +} + +static inline void davinci_i2c_reset_ctrl(struct davinci_i2c_dev *i2c_dev, + int val) +{ + rt_uint16_t w; + + w = davinci_i2c_read_reg(i2c_dev, DAVINCI_I2C_MDR_REG); + if (!val) /* put I2C into reset */ + w &= ~DAVINCI_I2C_MDR_IRS; + else /* take I2C out of reset */ + w |= DAVINCI_I2C_MDR_IRS; + + davinci_i2c_write_reg(i2c_dev, DAVINCI_I2C_MDR_REG, w); +} + +static void i2c_davinci_calc_clk_dividers(struct davinci_i2c_dev *dev) +{ + rt_uint16_t psc; + rt_uint32_t clk; + rt_uint32_t d; + rt_uint32_t clkh; + rt_uint32_t clkl; + rt_uint32_t input_clock = clk_get_rate(dev->clk); + + /* NOTE: I2C Clock divider programming info + * As per I2C specs the following formulas provide prescaler + * and low/high divider values + * input clk --> PSC Div -----------> ICCL/H Div --> output clock + * module clk + * + * output clk = module clk / (PSC + 1) [ (ICCL + d) + (ICCH + d) ] + * + * Thus, + * (ICCL + ICCH) = clk = (input clk / ((psc +1) * output clk)) - 2d; + * + * where if PSC == 0, d = 7, + * if PSC == 1, d = 6 + * if PSC > 1 , d = 5 + */ + + /* get minimum of 7 MHz clock, but max of 12 MHz */ + psc = (input_clock / 7000000) - 1; + if ((input_clock / (psc + 1)) > 12000000) + psc++; /* better to run under spec than over */ + d = (psc >= 2) ? 5 : 7 - psc; + + clk = ((input_clock / (psc + 1)) / (dev->bus_freq * 1000)) - (d << 1); + clkh = clk >> 1; + clkl = clk - clkh; + + davinci_i2c_write_reg(dev, DAVINCI_I2C_PSC_REG, psc); + davinci_i2c_write_reg(dev, DAVINCI_I2C_CLKH_REG, clkh); + davinci_i2c_write_reg(dev, DAVINCI_I2C_CLKL_REG, clkl); + + i2c_dbg("input_clock = %d, CLK = %d\n", input_clock, clk); +} + +/* + * This function configures I2C and brings I2C out of reset. + * This function is called during I2C init function. This function + * also gets called if I2C encounters any errors. + */ +static int i2c_davinci_init(struct davinci_i2c_dev *dev) +{ + /* put I2C into reset */ + davinci_i2c_reset_ctrl(dev, 0); + + /* compute clock dividers */ + i2c_davinci_calc_clk_dividers(dev); + + /* Respond at reserved "SMBus Host" slave address" (and zero); + * we seem to have no option to not respond... + */ + davinci_i2c_write_reg(dev, DAVINCI_I2C_OAR_REG, 0x08); + + i2c_dbg("PSC = %d\n", + davinci_i2c_read_reg(dev, DAVINCI_I2C_PSC_REG)); + i2c_dbg("CLKL = %d\n", + davinci_i2c_read_reg(dev, DAVINCI_I2C_CLKL_REG)); + i2c_dbg("CLKH = %d\n", + davinci_i2c_read_reg(dev, DAVINCI_I2C_CLKH_REG)); + i2c_dbg("bus_freq = %dkHz, bus_delay = %d\n", + dev->bus_freq, dev->bus_delay); + + /* Take the I2C module out of reset: */ + davinci_i2c_reset_ctrl(dev, 1); + + /* Enable interrupts */ + davinci_i2c_write_reg(dev, DAVINCI_I2C_IMR_REG, I2C_DAVINCI_INTR_ALL); + + return 0; +} + +/* + * Waiting for bus not busy + */ +static int i2c_davinci_wait_bus_not_busy(struct davinci_i2c_dev *dev, + char allow_sleep) +{ + unsigned long timeout; + static rt_uint16_t to_cnt; + RT_ASSERT(dev != RT_NULL); + RT_ASSERT(dev->bus != RT_NULL); + + timeout = rt_tick_get() + dev->bus->timeout; + while (davinci_i2c_read_reg(dev, DAVINCI_I2C_STR_REG) + & DAVINCI_I2C_STR_BB) { + if (to_cnt <= DAVINCI_I2C_MAX_TRIES) { + if (rt_tick_get() >= timeout) { + rt_kprintf("timeout waiting for bus ready\n"); + to_cnt++; + return -RT_ETIMEOUT; + } else { + to_cnt = 0; + i2c_recover_bus(dev); + i2c_davinci_init(dev); + } + } + if (allow_sleep) + rt_thread_delay(2); + } + + return 0; +} + +/* + * Low level master read/write transaction. This function is called + * from i2c_davinci_xfer. + */ +static int +i2c_davinci_xfer_msg(struct rt_i2c_bus_device *bus, struct rt_i2c_msg *msg, int stop) +{ + struct davinci_i2c_dev *dev = bus->priv; + rt_uint32_t flag; + rt_uint16_t w; + int r; + + /* Introduce a delay, required for some boards (e.g Davinci EVM) */ + if (dev->bus_delay) + udelay(dev->bus_delay); + + /* set the slave address */ + davinci_i2c_write_reg(dev, DAVINCI_I2C_SAR_REG, msg->addr); + + dev->buf = msg->buf; + dev->buf_len = msg->len; + dev->stop = stop; + + davinci_i2c_write_reg(dev, DAVINCI_I2C_CNT_REG, dev->buf_len); + + //INIT_COMPLETION(dev->cmd_complete); + dev->cmd_err = 0; + + /* Take I2C out of reset and configure it as master */ + flag = DAVINCI_I2C_MDR_IRS | DAVINCI_I2C_MDR_MST; + + /* if the slave address is ten bit address, enable XA bit */ + if (msg->flags & RT_I2C_ADDR_10BIT) + flag |= DAVINCI_I2C_MDR_XA; + if (!(msg->flags & RT_I2C_RD)) + flag |= DAVINCI_I2C_MDR_TRX; + if (msg->len == 0) + flag |= DAVINCI_I2C_MDR_RM; + + /* Enable receive or transmit interrupts */ + w = davinci_i2c_read_reg(dev, DAVINCI_I2C_IMR_REG); + if (msg->flags & RT_I2C_RD) + w |= DAVINCI_I2C_IMR_RRDY; + else + w |= DAVINCI_I2C_IMR_XRDY; + davinci_i2c_write_reg(dev, DAVINCI_I2C_IMR_REG, w); + + dev->terminate = 0; + + /* + * Write mode register first as needed for correct behaviour + * on OMAP-L138, but don't set STT yet to avoid a race with XRDY + * occurring before we have loaded DXR + */ + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); + + /* + * First byte should be set here, not after interrupt, + * because transmit-data-ready interrupt can come before + * NACK-interrupt during sending of previous message and + * ICDXR may have wrong data + * It also saves us one interrupt, slightly faster + */ + if ((!(msg->flags & RT_I2C_RD)) && dev->buf_len) + { + davinci_i2c_write_reg(dev, DAVINCI_I2C_DXR_REG, *dev->buf++); + dev->buf_len--; + } + + /* Set STT to begin transmit now DXR is loaded */ + flag |= DAVINCI_I2C_MDR_STT; + if (stop && msg->len != 0) + flag |= DAVINCI_I2C_MDR_STP; + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); + + r = rt_sem_take(&dev->completion, dev->bus->timeout); + if (r == -RT_ETIMEOUT) + { + rt_kprintf("controller timed out\n"); + i2c_recover_bus(dev); + i2c_davinci_init(dev); + dev->buf_len = 0; + return -RT_ETIMEOUT; + } + if (dev->buf_len) + { + /* This should be 0 if all bytes were transferred + * or dev->cmd_err denotes an error. + * A signal may have aborted the transfer. + */ + if (r == RT_EOK) + { + rt_kprintf("abnormal termination buf_len=%i\n", + dev->buf_len); + r = -RT_EIO; + } + dev->terminate = 1; + dev->buf_len = 0; + } + if (r < 0) + return r; + + /* no error */ + if (!dev->cmd_err) + return msg->len; + + /* We have an error */ + if (dev->cmd_err & DAVINCI_I2C_STR_AL) + { + i2c_davinci_init(dev); + return -RT_EIO; + } + + if (dev->cmd_err & DAVINCI_I2C_STR_NACK) + { + if (msg->flags & RT_I2C_IGNORE_NACK) + return msg->len; + if (stop) + { + w = davinci_i2c_read_reg(dev, DAVINCI_I2C_MDR_REG); + w |= DAVINCI_I2C_MDR_STP; + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, w); + } + return -RT_EIO; + } + return -RT_EIO; +} + +/* + * Prepare controller for a transaction and call i2c_davinci_xfer_msg + */ +static int +i2c_davinci_xfer(struct rt_i2c_bus_device *bus, struct rt_i2c_msg msgs[], int num) +{ + struct davinci_i2c_dev *dev = bus->priv; + int i; + int ret; + + i2c_dbg("%s: msgs: %d\n", __func__, num); + + ret = i2c_davinci_wait_bus_not_busy(dev, 1); + if (ret < 0) + { + i2c_dbg("timeout waiting for bus ready\n"); + return ret; + } + + for (i = 0; i < num; i++) + { + ret = i2c_davinci_xfer_msg(bus, &msgs[i], (i == (num - 1))); + i2c_dbg("%s [%d/%d] ret: %d\n", __func__, i + 1, num, + ret); + if (ret < 0) + return ret; + } + + + return num; +} + + +static void terminate_read(struct davinci_i2c_dev *dev) +{ + rt_uint16_t w = davinci_i2c_read_reg(dev, DAVINCI_I2C_MDR_REG); + w |= DAVINCI_I2C_MDR_NACK; + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, w); + + /* Throw away data */ + davinci_i2c_read_reg(dev, DAVINCI_I2C_DRR_REG); + if (!dev->terminate) + rt_kprintf("RDR IRQ while no data requested\n"); +} +static void terminate_write(struct davinci_i2c_dev *dev) +{ + rt_uint16_t w = davinci_i2c_read_reg(dev, DAVINCI_I2C_MDR_REG); + w |= DAVINCI_I2C_MDR_RM | DAVINCI_I2C_MDR_STP; + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, w); + + if (!dev->terminate) + i2c_dbg("TDR IRQ while no data to send\n"); +} + +/* + * Interrupt service routine. This gets called whenever an I2C interrupt + * occurs. + */ +static void i2c_davinci_isr(int irq, void *param) +{ + struct davinci_i2c_dev *dev = (struct davinci_i2c_dev *)param; + rt_uint32_t stat; + int count = 0; + rt_uint16_t w; + + while ((stat = davinci_i2c_read_reg(dev, DAVINCI_I2C_IVR_REG))) { + i2c_dbg("%s: stat=0x%x\n", __func__, stat); + if (count++ == 100) { + rt_kprintf("Too much work in one IRQ\n"); + break; + } + + switch (stat) { + case DAVINCI_I2C_IVR_AL: + /* Arbitration lost, must retry */ + dev->cmd_err |= DAVINCI_I2C_STR_AL; + dev->buf_len = 0; + rt_sem_release(&dev->completion); + break; + + case DAVINCI_I2C_IVR_NACK: + dev->cmd_err |= DAVINCI_I2C_STR_NACK; + dev->buf_len = 0; + rt_sem_release(&dev->completion); + break; + + case DAVINCI_I2C_IVR_ARDY: + davinci_i2c_write_reg(dev, + DAVINCI_I2C_STR_REG, DAVINCI_I2C_STR_ARDY); + if (((dev->buf_len == 0) && (dev->stop != 0)) || + (dev->cmd_err & DAVINCI_I2C_STR_NACK)) { + w = davinci_i2c_read_reg(dev, + DAVINCI_I2C_MDR_REG); + w |= DAVINCI_I2C_MDR_STP; + davinci_i2c_write_reg(dev, + DAVINCI_I2C_MDR_REG, w); + } + rt_sem_release(&dev->completion); + break; + + case DAVINCI_I2C_IVR_RDR: + if (dev->buf_len) { + *dev->buf++ = + davinci_i2c_read_reg(dev, + DAVINCI_I2C_DRR_REG); + dev->buf_len--; + if (dev->buf_len) + continue; + + davinci_i2c_write_reg(dev, + DAVINCI_I2C_STR_REG, + DAVINCI_I2C_IMR_RRDY); + } else { + /* signal can terminate transfer */ + terminate_read(dev); + } + break; + + case DAVINCI_I2C_IVR_XRDY: + if (dev->buf_len) { + davinci_i2c_write_reg(dev, DAVINCI_I2C_DXR_REG, + *dev->buf++); + dev->buf_len--; + if (dev->buf_len) + continue; + + w = davinci_i2c_read_reg(dev, + DAVINCI_I2C_IMR_REG); + w &= ~DAVINCI_I2C_IMR_XRDY; + davinci_i2c_write_reg(dev, + DAVINCI_I2C_IMR_REG, + w); + } else { + /* signal can terminate transfer */ + terminate_write(dev); + } + break; + + case DAVINCI_I2C_IVR_SCD: + davinci_i2c_write_reg(dev, + DAVINCI_I2C_STR_REG, DAVINCI_I2C_STR_SCD); + rt_sem_release(&dev->completion); + break; + + case DAVINCI_I2C_IVR_AAS: + i2c_dbg("Address as slave interrupt\n"); + break; + + default: + i2c_dbg("Unrecognized irq stat %d\n", stat); + break; + } + } + +} + + + +static struct rt_i2c_bus_device_ops bus_ops = { + .master_xfer = i2c_davinci_xfer, +}; + +int davinci_i2c_init(char *bus_name) +{ + struct rt_i2c_bus_device *bus; + struct davinci_i2c_dev *dev; + int r; + + bus = rt_malloc(sizeof(struct rt_i2c_bus_device)); + if (bus == RT_NULL) + { + rt_kprintf("rt_malloc failed\n"); + return -RT_ENOMEM; + } + + rt_memset((void *)bus, 0, sizeof(struct rt_i2c_bus_device)); + + bus->ops = &bus_ops; + bus->timeout = DAVINCI_I2C_TIMEOUT; + + dev = rt_malloc(sizeof(struct davinci_i2c_dev)); + if (!dev) + { + r = -RT_ENOMEM; + goto err; + } + + rt_memset((void *)dev, 0, sizeof(struct davinci_i2c_dev)); + + rt_sem_init(&dev->completion, "i2c_ack", 0, RT_IPC_FLAG_FIFO); + + dev->irq = IRQ_I2C; + + dev->clk = clk_get("I2CCLK"); + if (dev->clk == RT_NULL) { + r = -RT_ERROR; + goto err1; + } + + psc_change_state(DAVINCI_DM365_LPSC_I2C, 3); + + dev->base = DAVINCI_I2C_BASE; + dev->bus_freq = 100; + dev->bus_delay = 0; + dev->bus = bus; + + bus->priv = dev; + + i2c_davinci_init(dev); + + rt_hw_interrupt_install(dev->irq, i2c_davinci_isr, (void *)dev, "I2C"); + rt_hw_interrupt_umask(dev->irq); + + return rt_i2c_bus_device_register(bus, bus_name); + +err1: + rt_free(dev); + +err: + rt_free(bus); + + return r; +} + + diff --git a/bsp/dm365/drivers/mii.h b/bsp/dm365/drivers/mii.h new file mode 100644 index 0000000000000000000000000000000000000000..de799bcccec6aae9fe9dbdfc9519c9100472dafe --- /dev/null +++ b/bsp/dm365/drivers/mii.h @@ -0,0 +1,199 @@ +/* + * File : mii.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-03-18 weety first version + */ + + +#ifndef __MII_H__ +#define __MII_H__ + +/* Generic MII registers. */ + +#define MII_BMCR 0x00 /* Basic mode control register */ +#define MII_BMSR 0x01 /* Basic mode status register */ +#define MII_PHYSID1 0x02 /* PHYS ID 1 */ +#define MII_PHYSID2 0x03 /* PHYS ID 2 */ +#define MII_ADVERTISE 0x04 /* Advertisement control reg */ +#define MII_LPA 0x05 /* Link partner ability reg */ +#define MII_EXPANSION 0x06 /* Expansion register */ +#define MII_CTRL1000 0x09 /* 1000BASE-T control */ +#define MII_STAT1000 0x0a /* 1000BASE-T status */ +#define MII_ESTATUS 0x0f /* Extended Status */ +#define MII_DCOUNTER 0x12 /* Disconnect counter */ +#define MII_FCSCOUNTER 0x13 /* False carrier counter */ +#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ +#define MII_RERRCOUNTER 0x15 /* Receive error counter */ +#define MII_SREVISION 0x16 /* Silicon revision */ +#define MII_RESV1 0x17 /* Reserved... */ +#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ +#define MII_PHYADDR 0x19 /* PHY address */ +#define MII_RESV2 0x1a /* Reserved... */ +#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ +#define MII_NCONFIG 0x1c /* Network interface config */ + +/* Basic mode control register. */ +#define BMCR_RESV 0x003f /* Unused... */ +#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */ +#define BMCR_CTST 0x0080 /* Collision test */ +#define BMCR_FULLDPLX 0x0100 /* Full duplex */ +#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ +#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ +#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ +#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ +#define BMCR_SPEED100 0x2000 /* Select 100Mbps */ +#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ +#define BMCR_RESET 0x8000 /* Reset the DP83840 */ + +/* Basic mode status register. */ +#define BMSR_ERCAP 0x0001 /* Ext-reg capability */ +#define BMSR_JCD 0x0002 /* Jabber detected */ +#define BMSR_LSTATUS 0x0004 /* Link status */ +#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ +#define BMSR_RFAULT 0x0010 /* Remote fault detected */ +#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ +#define BMSR_RESV 0x00c0 /* Unused... */ +#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */ +#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */ +#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */ +#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ +#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ +#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ +#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ +#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ + +/* Advertisement control register. */ +#define ADVERTISE_SLCT 0x001f /* Selector bits */ +#define ADVERTISE_CSMA 0x0001 /* Only selector supported */ +#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ +#define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ +#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ +#define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */ +#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ +#define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */ +#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ +#define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */ +#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ +#define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */ +#define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */ +#define ADVERTISE_RESV 0x1000 /* Unused... */ +#define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ +#define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ +#define ADVERTISE_NPAGE 0x8000 /* Next page bit */ + +#define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ + ADVERTISE_CSMA) +#define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ + ADVERTISE_100HALF | ADVERTISE_100FULL) + +/* Link partner ability register. */ +#define LPA_SLCT 0x001f /* Same as advertise selector */ +#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ +#define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ +#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ +#define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */ +#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ +#define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */ +#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ +#define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ +#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ +#define LPA_PAUSE_CAP 0x0400 /* Can pause */ +#define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ +#define LPA_RESV 0x1000 /* Unused... */ +#define LPA_RFAULT 0x2000 /* Link partner faulted */ +#define LPA_LPACK 0x4000 /* Link partner acked us */ +#define LPA_NPAGE 0x8000 /* Next page bit */ + +#define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) +#define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) + +/* Expansion register for auto-negotiation. */ +#define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ +#define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ +#define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ +#define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ +#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ +#define EXPANSION_RESV 0xffe0 /* Unused... */ + +#define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */ +#define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */ + +/* N-way test register. */ +#define NWAYTEST_RESV1 0x00ff /* Unused... */ +#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ +#define NWAYTEST_RESV2 0xfe00 /* Unused... */ + +/* 1000BASE-T Control register */ +#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */ +#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */ + +/* 1000BASE-T Status register */ +#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */ +#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */ +#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */ +#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */ + +/* Flow control flags */ +#define FLOW_CTRL_TX 0x01 +#define FLOW_CTRL_RX 0x02 + +/** + * mii_nway_result + * @negotiated: value of MII ANAR and'd with ANLPAR + * + * Given a set of MII abilities, check each bit and returns the + * currently supported media, in the priority order defined by + * IEEE 802.3u. We use LPA_xxx constants but note this is not the + * value of LPA solely, as described above. + * + * The one exception to IEEE 802.3u is that 100baseT4 is placed + * between 100T-full and 100T-half. If your phy does not support + * 100T4 this is fine. If your phy places 100T4 elsewhere in the + * priority order, you will need to roll your own function. + */ +rt_inline unsigned int mii_nway_result (unsigned int negotiated) +{ + unsigned int ret; + + if (negotiated & LPA_100FULL) + ret = LPA_100FULL; + else if (negotiated & LPA_100BASE4) + ret = LPA_100BASE4; + else if (negotiated & LPA_100HALF) + ret = LPA_100HALF; + else if (negotiated & LPA_10FULL) + ret = LPA_10FULL; + else + ret = LPA_10HALF; + + return ret; +} + +/* The forced speed, 10Mb, 100Mb, gigabit, 2.5Gb, 10GbE. */ +#define SPEED_10 10 +#define SPEED_100 100 +#define SPEED_1000 1000 +#define SPEED_2500 2500 +#define SPEED_10000 10000 + + +#endif /* __MII_H__ */ + diff --git a/bsp/dm365/drivers/mmcsd.c b/bsp/dm365/drivers/mmcsd.c new file mode 100644 index 0000000000000000000000000000000000000000..e459fbbd3b46187e25b5e9cd9ad36f78da74e58b --- /dev/null +++ b/bsp/dm365/drivers/mmcsd.c @@ -0,0 +1,1479 @@ +/* + * File : mmcsd.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#include +#include +#include +#include +#include +#include "mmcsd.h" +#include "edma.h" + +#define RT_USING_MMCSD0 + +#define MMCSD_DEBUG 0 +#if MMCSD_DEBUG +#define mmc_dbg(fmt, ...) rt_kprintf(fmt, ##__VA_ARGS__) +#else +#define mmc_dbg(fmt, ...) +#endif + +#define MMU_NOCACHE_ADDR(a) ((rt_uint32_t)a | (1UL<<29)) +#define CACHE_LINE_SIZE 32 + + +extern void mmu_clean_dcache(rt_uint32_t buffer, rt_uint32_t size); +extern void mmu_invalidate_dcache(rt_uint32_t buffer, rt_uint32_t size); + +#define EVT_QUEUE_NUM 0 /* EDMA3 Event queue number. */ + +static unsigned rw_threshold = 32; +static rt_bool_t use_dma = RT_TRUE; + +enum DATA_DIR_TYPE +{ + DM365_MMC_DATADIR_NONE = 0, + DM365_MMC_DATADIR_READ, + DM365_MMC_DATADIR_WRITE, +}; + +struct mmc_dm365_host +{ + struct rt_mmcsd_host *mmc; + struct rt_mmcsd_req *req; + struct rt_mmcsd_data *data; + struct rt_mmcsd_cmd *cmd; + struct edmacc_param tx_template; + struct edmacc_param rx_template; + + rt_uint32_t mmc_input_clk; + rt_uint32_t ns_in_one_cycle; /* for ns in one cycle calculation */ + + mmcsd_regs_t *mmcsd_regs; + rt_uint8_t bus_mode; + + enum DATA_DIR_TYPE data_dir; + + rt_uint32_t rxdma; + rt_uint32_t txdma; + rt_bool_t use_dma; + rt_bool_t do_dma; + + rt_uint8_t *buffer; + rt_uint32_t buffer_bytes_left; + rt_uint32_t bytes_left; + + rt_uint8_t *dma_buffer; + rt_bool_t use_dma_buffer; + rt_bool_t sdio_int; +}; + +void *mmc_priv(struct rt_mmcsd_host *host) +{ + return (void *)host->private_data; +} + +static void delay_us(rt_uint32_t us) +{ + rt_uint32_t len; + for (;us > 0; us --) + for (len = 0; len < 10; len++ ); +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: calculate_freq_for_card() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚ¼ÆËãÉèÖÃSD¿¨ÆµÂÊËùÐèµÄ·ÖƵÊý +** +** Êä¡¡Èë: host -> DM365 MMC host¾ä±ú +** mmc_req_freq -> MMC¹¤×÷ƵÂÊ +** +** Êä¡¡³ö: ·ÖƵֵ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static rt_uint32_t calculate_freq_for_card(struct mmc_dm365_host *host, rt_uint32_t mmc_req_freq) +{ + rt_uint32_t mmc_freq = 0; + rt_uint32_t mmc_pclk = 0; + rt_uint32_t mmc_push_pull_divisor = 0; + + mmc_pclk = host->mmc_input_clk; + + if (mmc_req_freq && mmc_pclk > (2 * mmc_req_freq)) + mmc_push_pull_divisor = ((rt_uint32_t)mmc_pclk / (2 * mmc_req_freq)) - 1; + else + mmc_push_pull_divisor = 0; + + mmc_freq = (rt_uint32_t)mmc_pclk / (2 * (mmc_push_pull_divisor + 1)); + + if (mmc_freq > mmc_req_freq) + mmc_push_pull_divisor = mmc_push_pull_divisor + 1; + + /* Convert ns to clock cycles */ + if (mmc_req_freq <= 400000) + host->ns_in_one_cycle = (1000000)/(((mmc_pclk/(2*(mmc_push_pull_divisor+1)))/1000)); + else + host->ns_in_one_cycle = (1000000)/(((mmc_pclk/(2*(mmc_push_pull_divisor+1)))/1000000)); + + return mmc_push_pull_divisor; +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: calculate_freq_for_card() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚ¼ÆËãMMC clock·ÖƵÊý +** +** Êä¡¡Èë: host -> DM365 MMC host¾ä±ú +** ios -> MMC ²Ù×÷¾ä±ú +** +** Êä¡¡³ö: ¶ÁÈ¡µ½µÄPHY¼Ä´æÆ÷Öµ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void calculate_clk_divider(struct rt_mmcsd_host *mmc, struct rt_mmcsd_io_cfg *ios) +{ + rt_uint32_t temp = 0; + rt_uint32_t mmc_pclk = 0; + rt_uint32_t open_drain_freq = 0; + rt_uint32_t mmc_push_pull_freq = 0; + struct mmc_dm365_host *host = mmc_priv(mmc); + + mmc_pclk = host->mmc_input_clk; + + if (ios->bus_mode == MMCSD_BUSMODE_OPENDRAIN) + { + /* Ignoring the init clock value passed for fixing the inter + * operability with different cards. + */ + open_drain_freq = ((rt_uint32_t)mmc_pclk / (2 * MMCSD_INIT_CLOCK)) - 1; + + if (open_drain_freq > 0xFF) + open_drain_freq = 0xFF; + + temp = host->mmcsd_regs->MMCCLK & ~MMCCLK_CLKRT_MASK; + temp |= open_drain_freq; + host->mmcsd_regs->MMCCLK = temp; + + + /* Convert ns to clock cycles */ + host->ns_in_one_cycle = (1000000) / (MMCSD_INIT_CLOCK / 1000); + } + else + { + mmc_push_pull_freq = calculate_freq_for_card(host, ios->clock); + + if (mmc_push_pull_freq > 0xFF) + mmc_push_pull_freq = 0xFF; + + temp = host->mmcsd_regs->MMCCLK & ~MMCCLK_CLKEN; + host->mmcsd_regs->MMCCLK = temp; + + delay_us(10); + + temp = host->mmcsd_regs->MMCCLK & ~MMCCLK_CLKRT_MASK; + temp |= mmc_push_pull_freq; + host->mmcsd_regs->MMCCLK = temp; + + host->mmcsd_regs->MMCCLK = temp | MMCCLK_CLKEN; + + delay_us(10); + } +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_set_ios() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÊÇmmcÉèÖÃÉèÖà +** +** Êä¡¡Èë: mmc -> mmc host ¾ä±ú +** ios -> mmc ²Ù×÷¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_set_ios(struct rt_mmcsd_host *mmc, struct rt_mmcsd_io_cfg *ios) +{ + struct mmc_dm365_host *host = mmc_priv(mmc); + + mmc_dbg("clock %dHz busmode %d powermode %d Vdd %04x\n", ios->clock, ios->bus_mode, ios->power_mode, ios->vdd); + + switch (ios->bus_width) + { + case MMCSD_BUS_WIDTH_8: + mmc_dbg("Enabling 8 bit mode\n"); + host->mmcsd_regs->MMCCTL = (host->mmcsd_regs->MMCCTL & ~MMCCTL_WIDTH_4_BIT) | MMCCTL_WIDTH_8_BIT; + break; + case MMCSD_BUS_WIDTH_4: + mmc_dbg("Enabling 4 bit mode\n"); + host->mmcsd_regs->MMCCTL = (host->mmcsd_regs->MMCCTL & ~MMCCTL_WIDTH_8_BIT) | MMCCTL_WIDTH_4_BIT; + break; + case MMCSD_BUS_WIDTH_1: + mmc_dbg("Enabling 1 bit mode\n"); + host->mmcsd_regs->MMCCTL = host->mmcsd_regs->MMCCTL & ~(MMCCTL_WIDTH_8_BIT | MMCCTL_WIDTH_4_BIT); + break; + } + + calculate_clk_divider(mmc, ios); + + host->bus_mode = ios->bus_mode; + if (ios->power_mode == MMCSD_POWER_UP) + { + unsigned long timeout = rt_tick_get() + 500; + rt_bool_t lose = 1; + + host->mmcsd_regs->MMCARGHL = 0; + host->mmcsd_regs->MMCCMD = MMCCMD_INITCK; + + while (rt_tick_get() < timeout) + { + rt_uint32_t tmp = host->mmcsd_regs->MMCST0; + + if (tmp & MMCST0_RSPDNE) + { + lose = 0; + break; + } + } + if (lose) + mmc_dbg("powerup timeout\n"); + } +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: dm365_fifo_data_trans() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÊÇfifoģʽ´«Êä +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** n -> ´«Êä×Ö½ÚÊý +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void dm365_fifo_data_trans(struct mmc_dm365_host *host, rt_uint32_t n) +{ + rt_uint8_t *p; + rt_uint32_t i; + + p = host->buffer; + + if (host->bytes_left < n) + n = host->bytes_left; + + host->bytes_left -= n; + + /* NOTE: we never transfer more than rw_threshold bytes + * to/from the fifo here; there's no I/O overlap. + * This also assumes that access width( i.e. ACCWD) is 4 bytes + */ + if (host->data_dir == DM365_MMC_DATADIR_WRITE) + { + for (i = 0; i < (n >> 2); i++) + { + host->mmcsd_regs->MMCDXR = *((rt_uint32_t *)p); + p = p + 4; + } + if (n & 3) + { + rt_kprintf("to do ... \n"); +// iowrite8_rep(host->base + MMCSD_MMCDXR, p, (n & 3)); + p = p + (n & 3); + } + } + else + { + for (i = 0; i < (n >> 2); i++) + { + *((rt_uint32_t *)p) = host->mmcsd_regs->MMCDRR; + p = p + 4; + } + if (n & 3) + { + rt_kprintf("to do ... \n"); +// ioread8_rep(host->base + MMCSD_MMCDRR, p, (n & 3)); + p = p + (n & 3); + } + } + host->buffer = p; +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_start_command() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÊÇ¿ªÊ¼·¢ËÍSDÃüÁî +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** cmd -> SDÃüÁî¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_start_command(struct mmc_dm365_host *host, struct rt_mmcsd_cmd *cmd) +{ + rt_uint32_t cmd_reg = 0; + rt_uint32_t im_val; + + host->cmd = cmd; + + switch (resp_type(cmd)) + { + case RESP_R1B: + /* There's some spec confusion about when R1B is + * allowed, but if the card doesn't issue a BUSY + * then it's harmless for us to allow it. + */ + cmd_reg |= MMCCMD_BSYEXP; + /* FALLTHROUGH */ + case RESP_R1: /* 48 bits, CRC */ + case RESP_R4: + case RESP_R5: + case RESP_R6: + case RESP_R7: + cmd_reg |= MMCCMD_RSPFMT_R1456; + break; + case RESP_R2: /* 136 bits, CRC */ + cmd_reg |= MMCCMD_RSPFMT_R2; + break; + case RESP_R3: /* 48 bits, no CRC */ + cmd_reg |= MMCCMD_RSPFMT_R3; + break; + default: + cmd_reg |= MMCCMD_RSPFMT_NONE; + mmc_dbg("unknown resp_type %04x\n", resp_type(cmd)); + break; + } + + /* Set command index */ + cmd_reg |= cmd->cmd_code; + + /* Enable EDMA transfer triggers */ + if (host->do_dma == RT_TRUE) + cmd_reg |= MMCCMD_DMATRIG; + + if (host->data != RT_NULL && host->data_dir == DM365_MMC_DATADIR_READ) + cmd_reg |= MMCCMD_DMATRIG; + + /* Setting whether command involves data transfer or not */ + if (cmd->data) + cmd_reg |= MMCCMD_WDATX; + + /* Setting whether stream or block transfer */ + if (cmd->flags & MMC_DATA_STREAM) + { + mmc_dbg("to do\n"); + cmd_reg |= MMCCMD_STRMTP; + } + + /* Setting whether data read or write */ + if (host->data_dir == DM365_MMC_DATADIR_WRITE) + cmd_reg |= MMCCMD_DTRW; + + if (host->bus_mode == MMCSD_BUSMODE_PUSHPULL) + { + cmd_reg |= MMCCMD_PPLEN; + } + + /* set Command timeout */ + host->mmcsd_regs->MMCTOR = 0x1FFF; + + /* Enable interrupt (calculate here, defer until FIFO is stuffed). */ + im_val = MMCST0_RSPDNE | MMCST0_CRCRS | MMCST0_TOUTRS; + if (host->data_dir == DM365_MMC_DATADIR_WRITE) + { + im_val |= MMCST0_DATDNE | MMCST0_CRCWR; + + if (host->do_dma == RT_FALSE) + im_val |= MMCST0_DXRDY; + } + else if (host->data_dir == DM365_MMC_DATADIR_READ) + { + im_val |= MMCST0_DATDNE | MMCST0_CRCRD | MMCST0_TOUTRD; + + if (host->do_dma == RT_FALSE) + im_val |= MMCST0_DRRDY; + } + + /* + * Before non-DMA WRITE commands the controller needs priming: + * FIFO should be populated with 32 bytes i.e. whatever is the FIFO size + */ + if ((host->do_dma == RT_FALSE) && (host->data_dir == DM365_MMC_DATADIR_WRITE)) + dm365_fifo_data_trans(host, rw_threshold); + + host->mmcsd_regs->MMCARGHL = cmd->arg; + host->mmcsd_regs->MMCCMD = cmd_reg; + host->mmcsd_regs->MMCIM = im_val; +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: dm365_abort_dma() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÖÕÖ¹DMA´«Êä +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void dm365_abort_dma(struct mmc_dm365_host *host) +{ + int sync_dev; + + if (host->data_dir == DM365_MMC_DATADIR_READ) + sync_dev = host->rxdma; + else + sync_dev = host->txdma; + + //EDMA3DisableTransfer(EDMA0CC0_REG_BASE, sync_dev, EDMA3_TRIG_MODE_EVENT); + edma_stop(sync_dev); + edma_clean_channel(sync_dev); +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_request_done() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚ½áÊø´¦ÀíÒ»¸öMMCÇëÇó +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** mrq -> request ¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +void mmc_request_done(struct rt_mmcsd_host *host, struct rt_mmcsd_req *mrq) +{ + struct rt_mmcsd_cmd *cmd = mrq->cmd; + int err = cmd->err; + + if (err && cmd->retries) + { + mmc_dbg("req failed (CMD%u): %d, retrying...\n", cmd->cmd_code, err); + + cmd->retries--; + cmd->err = 0; + host->ops->request(host, mrq); + } + else + { + mmc_dbg("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n", + "dm365 host", cmd->cmd_code, err, + cmd->resp[0], cmd->resp[1], + cmd->resp[2], cmd->resp[3]); + + if (mrq->data) + { + mmc_dbg("%s: %d bytes transferred: %d\n", + "dm365 host", + mrq->data->bytes_xfered, mrq->data->err); + } + + if (mrq->stop) + { + mmc_dbg("%s: (CMD%u): %d: %08x %08x %08x %08x\n", + "dm365 host", mrq->stop->cmd_code, + mrq->stop->err, + mrq->stop->resp[0], mrq->stop->resp[1], + mrq->stop->resp[2], mrq->stop->resp[3]); + } + + mmcsd_req_complete(host); + } +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_xfer_done() +** ¹¦ÄÜÃèÊö: Êý¾Ý´«ËͽáÊøµ÷Óô˺¯Êý +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** data -> data ¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_xfer_done(struct mmc_dm365_host *host, struct rt_mmcsd_data *data) +{ + host->data = RT_NULL; + + if (host->mmc->flags & MMCSD_SUP_SDIO_IRQ) { + /* + * SDIO Interrupt Detection work-around as suggested by + * Davinci Errata (TMS320DM355 Silicon Revision 1.1 Errata + * 2.1.6): Signal SDIO interrupt only if it is enabled by core + */ + if (host->sdio_int && !(host->mmcsd_regs->SDIOST0 & + SDIOST0_DAT1_HI)) { + host->mmcsd_regs->SDIOIST = SDIOIST_IOINT; + sdio_irq_wakeup(host->mmc); + } + } + + if (host->do_dma == RT_TRUE) + { + dm365_abort_dma(host); + + if (data->flags & DATA_DIR_READ) + { + /* read operation */ + if (host->use_dma_buffer == RT_TRUE) + { + /* copy DMA buffer to read buffer */ + memcpy(data->buf, (void*)MMU_NOCACHE_ADDR(host->dma_buffer), data->blks * data->blksize); + } + /*else + { + mmu_invalidate_dcache((rt_uint32_t)data->buf, data->blks * data->blksize); + }*/ + } + + host->do_dma = RT_FALSE; + } + + host->data_dir = DM365_MMC_DATADIR_NONE; + + if (!data->stop || (host->cmd && host->cmd->err)) + { + mmc_request_done(host->mmc, data->mrq); + host->mmcsd_regs->MMCIM = 0; + } + else + mmc_dm365_start_command(host, data->stop); +} + +static void mmc_dm365_dma_cb(unsigned channel, rt_uint16_t ch_status, void *data) +{ + if (DMA_COMPLETE != ch_status) { + struct mmc_dm365_host *host = data; + + /* Currently means: DMA Event Missed, or "null" transfer + * request was seen. In the future, TC errors (like bad + * addresses) might be presented too. + */ + mmc_dbg("DMA %s error\n", + (host->data->flags & MMC_DATA_WRITE) + ? "write" : "read"); + host->data->err = -RT_EIO; + mmc_dm365_xfer_done(host, host->data); + } +} + + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_dma_setup() +** ¹¦ÄÜÃèÊö: DMA ÉèÖú¯Êý +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** tx -> ²¼¶û±äÁ¿£¬ÓÃÓÚÅжÏTx»òÕßÊÇRx +** template -> ÓÃÓÚ±£´æEDMA3CCPaRAMEntry»ú¹¹Êý¾Ý +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_dma_setup(struct mmc_dm365_host *host, rt_bool_t tx, struct edmacc_param *template) +{ + rt_uint32_t sync_dev; + const rt_uint16_t acnt = 4; + const rt_uint16_t bcnt = rw_threshold >> 2; + const rt_uint16_t ccnt = 0; + rt_uint32_t src_port = 0; + rt_uint32_t dst_port = 0; + rt_int16_t src_bidx, dst_bidx; + rt_int16_t src_cidx, dst_cidx; + + //edmacc_param paramSet; + + /* + * A-B Sync transfer: each DMA request is for one "frame" of + * rw_threshold bytes, broken into "acnt"-size chunks repeated + * "bcnt" times. Each segment needs "ccnt" such frames; since + * we tell the block layer our mmc->max_seg_size limit, we can + * trust (later) that it's within bounds. + * + * The FIFOs are read/written in 4-byte chunks (acnt == 4) and + * EDMA will optimize memory operations to use larger bursts. + */ + if (tx) + { + sync_dev = host->txdma; + + /* src_prt, ccnt, and link to be set up later */ + /*paramSet.srcBIdx = acnt; + paramSet.srcCIdx = acnt * bcnt; + + paramSet.destAddr = (rt_uint32_t)&(host->mmcsd_regs->MMCDXR); + paramSet.destBIdx = 0; + paramSet.destCIdx = 0;*/ + /* src_prt, ccnt, and link to be set up later */ + src_bidx = acnt; + src_cidx = acnt * bcnt; + + dst_port = (rt_uint32_t)&(host->mmcsd_regs->MMCDXR); + dst_bidx = 0; + dst_cidx = 0; + } + else + { + sync_dev = host->rxdma; + + /* dst_prt, ccnt, and link to be set up later */ + /*paramSet.srcAddr = (rt_uint32_t)&(host->mmcsd_regs->MMCDRR); + paramSet.srcBIdx = 0; + paramSet.srcCIdx = 0; + + paramSet.destBIdx = acnt; + paramSet.destCIdx = acnt * bcnt;*/ + src_port = (rt_uint32_t)&(host->mmcsd_regs->MMCDRR); + src_bidx = 0; + src_cidx = 0; + + /* dst_prt, ccnt, and link to be set up later */ + dst_bidx = acnt; + dst_cidx = acnt * bcnt; + } + /* + * We can't use FIFO mode for the FIFOs because MMC FIFO addresses + * are not 256-bit (32-byte) aligned. So we use INCR, and the W8BIT + * parameter is ignored. + */ + edma_set_src(sync_dev, src_port, INCR, W8BIT); + edma_set_dest(sync_dev, dst_port, INCR, W8BIT); + + edma_set_src_index(sync_dev, src_bidx, src_cidx); + edma_set_dest_index(sync_dev, dst_bidx, dst_cidx); + + edma_set_transfer_params(sync_dev, acnt, bcnt, ccnt, 8, ABSYNC); + + edma_read_slot(sync_dev, template); + + /* don't bother with irqs or chaining */ + template->opt |= EDMA_CHAN_SLOT(sync_dev) << 12; + +#if 0 + paramSet.opt = 0u; + /* Src & Dest are in INCR modes */ + paramSet.opt &= 0xFFFFFFFCu; + /* Program the TCC */ + paramSet.opt |= ((sync_dev << EDMA3CC_OPT_TCC_SHIFT) & EDMA3CC_OPT_TCC); + + paramSet.aCnt = acnt; + paramSet.bCnt = bcnt; + + /* AB Sync Transfer Mode */ + paramSet.opt |= (1 << EDMA3CC_OPT_SYNCDIM_SHIFT); + + /* Now, write the PaRAM Set. */ + EDMA3SetPaRAM(EDMA0CC0_REG_BASE, sync_dev, ¶mSet); + + EDMA3GetPaRAM(EDMA0CC0_REG_BASE, sync_dev, template); +#endif +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_send_dma_request() +** ¹¦ÄÜÃèÊö: ·¢ËÍDMAÇëÇó +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** data -> DMA´«ËÍÊý¾Ý½á¹¹¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_send_dma_request(struct mmc_dm365_host *host, struct rt_mmcsd_data *data) +{ + //struct EDMA3CCPaRAMEntry *template; + struct edmacc_param *template; + rt_uint32_t buf_ptr; + rt_uint32_t channel; + rt_uint32_t bytes_left = host->bytes_left; + rt_uint32_t count = host->bytes_left; + const rt_uint32_t shift = ffs(rw_threshold) - 1; + + if (host->use_dma_buffer == RT_TRUE) + buf_ptr = host->dma_buffer;//MMU_NOCACHE_ADDR(host->dma_buffer); + else + buf_ptr = (rt_uint32_t)data->buf; + + if (host->data_dir == DM365_MMC_DATADIR_WRITE) + { + template = &host->tx_template; + channel = host->txdma; + } + else + { + template = &host->rx_template; + channel = host->rxdma; + } + + template->link_bcntrld = 0xffff; + //template->bCntReload = 0x0; + + if (count > bytes_left) + count = bytes_left; + bytes_left -= count; + + if (host->data_dir == DM365_MMC_DATADIR_WRITE) + template->src = buf_ptr; + else + template->dst = buf_ptr; + template->ccnt = count >> shift; + + edma_write_slot(channel, template); + + edma_clear_event(channel); + + /*EDMA3SetPaRAM(EDMA0CC0_REG_BASE, channel, template); + EDMA3ClrEvt(EDMA0CC0_REG_BASE, channel); + EDMA3EnableTransfer(EDMA0CC0_REG_BASE, channel, EDMA3_TRIG_MODE_EVENT);*/ + edma_start(channel); +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_start_dma_transfer() +** ¹¦ÄÜÃèÊö: ¿ªÊ¼DMA´«Êä +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** data -> DMA´«ËÍÊý¾Ý½á¹¹¾ä±ú +** +** Êä¡¡³ö: DMA´«Êä×Ö½ÚÊý +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static int mmc_dm365_start_dma_transfer(struct mmc_dm365_host *host, struct rt_mmcsd_data *data) +{ + /* set initial value */ + host->use_dma_buffer = RT_FALSE; + + if (!(data->flags & DATA_DIR_READ)) + { + if ((rt_uint32_t)data->buf & (RT_ALIGN_SIZE - 1)) + { + /* not align to basic size, use DMA buffer */ + host->use_dma_buffer = RT_TRUE; + memcpy((void*)MMU_NOCACHE_ADDR(host->dma_buffer), data->buf, data->blks * data->blksize); + } + else + { + rt_uint32_t addr; + addr = ((rt_uint32_t)data->buf & ~(CACHE_LINE_SIZE - 1)); + /* write data case, always clean DCache */ + mmu_clean_dcache(addr, (data->blks + 1)* data->blksize); + } + } + else + { + /* whether align to cache line in read operation */ + if (((rt_uint32_t)data->buf) & (CACHE_LINE_SIZE - 1)) + host->use_dma_buffer = RT_TRUE; + else + mmu_invalidate_dcache((rt_uint32_t)data->buf, data->blks * data->blksize); + } + + host->do_dma = RT_TRUE; + mmc_dm365_send_dma_request(host, data); + + return 0; +} + +#if 0 +/******************************************************************************************************* +** º¯ÊýÃû³Æ: acquire_dma_channels() +** ¹¦ÄÜÃèÊö: »ñÈ¡DMA channel +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** +** Êä¡¡³ö: DMA ͨµÀºÅ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static int acquire_dma_channels(struct mmc_dm365_host *host) +{ + int r; + + /* Acquire master DMA write channel */ + r = EDMA3RequestChannel(EDMA0CC0_REG_BASE, EDMA3_CHANNEL_TYPE_DMA, host->txdma, host->txdma, EVT_QUEUE_NUM); + if (r < 0) + { + rt_kprintf("alloc %s channel err %d\n", "tx", r); + return r; + } + mmc_dm365_dma_setup(host, RT_TRUE, &host->tx_template); + + /* Acquire master DMA read channel */ + r = EDMA3RequestChannel(EDMA0CC0_REG_BASE, EDMA3_CHANNEL_TYPE_DMA, host->rxdma, host->rxdma, EVT_QUEUE_NUM); + if (r < 0) + { + rt_kprintf("alloc %s channel err %d\n", "rx", r); + goto free_master_write; + } + mmc_dm365_dma_setup(host, RT_FALSE, &host->rx_template); + + return 0; + +free_master_write: + EDMA3FreeChannel(EDMA0CC0_REG_BASE, EDMA3_CHANNEL_TYPE_DMA, host->txdma, EDMA3_TRIG_MODE_EVENT, host->txdma, EVT_QUEUE_NUM); + + return r; +} +#endif +static int acquire_dma_channels(struct mmc_dm365_host *host) +{ + //u32 link_size; + int r, i; + + /* Acquire master DMA write channel */ + r = edma_alloc_channel(host->txdma, mmc_dm365_dma_cb, host, + EVENTQ_DEFAULT); + if (r < 0) { + mmc_dbg("alloc %s channel err %d\n", + "tx", r); + return r; + } + mmc_dm365_dma_setup(host, RT_TRUE, &host->tx_template); + + /* Acquire master DMA read channel */ + r = edma_alloc_channel(host->rxdma, mmc_dm365_dma_cb, host, + EVENTQ_DEFAULT); + if (r < 0) { + mmc_dbg("alloc %s channel err %d\n", + "rx", r); + goto free_master_write; + } + mmc_dm365_dma_setup(host, RT_FALSE, &host->rx_template); + + /* Allocate parameter RAM slots, which will later be bound to a + * channel as needed to handle a scatterlist. + */ +#if 0 + link_size = min_t(unsigned, host->nr_sg, ARRAY_SIZE(host->links)); + for (i = 0; i < link_size; i++) { + r = edma_alloc_slot(EDMA_CTLR(host->txdma), EDMA_SLOT_ANY); + if (r < 0) { + mmc_dbg("dma PaRAM alloc --> %d\n", + r); + break; + } + host->links[i] = r; + } + host->n_link = i; +#endif + + return 0; + +free_master_write: + edma_free_channel(host->txdma); + + return r; +} + + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_prepare_data() +** ¹¦ÄÜÃèÊö: ×¼±¸ DMA Êý¾Ý +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** req -> SD request ½á¹¹¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_prepare_data(struct mmc_dm365_host *host, struct rt_mmcsd_req *req) +{ + int timeout; + int fifo_lev; + struct rt_mmcsd_data *data = req->data; + + fifo_lev = (rw_threshold == 64) ? MMCFIFOCTL_FIFOLEV : 0; + + host->data = data; + if (data == RT_NULL) + { + host->data_dir = DM365_MMC_DATADIR_NONE; + host->mmcsd_regs->MMCBLEN = 0; + host->mmcsd_regs->MMCNBLK = 0; + return; + } + + mmc_dbg("%s %s, %d blocks of %d bytes\n", + (data->flags & DATA_STREAM) ? "stream" : "block", + (data->flags & DATA_DIR_WRITE) ? "write" : "read", + data->blks, data->blksize); + mmc_dbg(" DTO %d cycles + %d ns\n", + data->timeout_clks, data->timeout_ns); + timeout = data->timeout_clks + (data->timeout_ns / host->ns_in_one_cycle); + if (timeout > 0xffff) + timeout = 0xffff; + + host->mmcsd_regs->MMCTOD = timeout; + host->mmcsd_regs->MMCNBLK = data->blks; + host->mmcsd_regs->MMCBLEN = data->blksize; + + /* Configure the FIFO */ + switch (data->flags & DATA_DIR_WRITE) + { + case DATA_DIR_WRITE: + host->data_dir = DM365_MMC_DATADIR_WRITE; + host->mmcsd_regs->MMCFIFOCTL = fifo_lev | MMCFIFOCTL_FIFODIR_WR | MMCFIFOCTL_FIFORST; + host->mmcsd_regs->MMCFIFOCTL = fifo_lev | MMCFIFOCTL_FIFODIR_WR; + break; + + default: + host->data_dir = DM365_MMC_DATADIR_READ; + host->mmcsd_regs->MMCFIFOCTL = fifo_lev | MMCFIFOCTL_FIFODIR_RD | MMCFIFOCTL_FIFORST; + host->mmcsd_regs->MMCFIFOCTL = fifo_lev | MMCFIFOCTL_FIFODIR_RD; + break; + } + + host->buffer = RT_NULL; + host->bytes_left = data->blks * data->blksize; + + /* For now we try to use DMA whenever we won't need partial FIFO + * reads or writes, either for the whole transfer (as tested here) + * or for any individual scatterlist segment (tested when we call + * start_dma_transfer). + * + * While we *could* change that, unusual block sizes are rarely + * used. The occasional fallback to PIO should't hurt. + */ + if ((host->use_dma == RT_TRUE) && (host->bytes_left & (rw_threshold - 1)) == 0 && + mmc_dm365_start_dma_transfer(host, data) == 0) + { + /* zero this to ensure we take no PIO paths */ + host->bytes_left = 0; + } + else + { + /* Revert to CPU Copy */ + host->buffer = (rt_uint8_t*)req->data->buf; + } +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_request() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýʵÏÖSD request²Ù×÷ +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** req -> SD request ½á¹¹¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_request(struct rt_mmcsd_host *mmc, struct rt_mmcsd_req *req) +{ + struct mmc_dm365_host *host = mmc_priv(mmc); + unsigned long timeout = rt_tick_get() + 900; + rt_uint32_t mmcst1 = 0; + + /* Card may still be sending BUSY after a previous operation, + * typically some kind of write. If so, we can't proceed yet. + */ + while (rt_tick_get() < timeout) + { + mmcst1 = host->mmcsd_regs->MMCST1; + if (!(mmcst1 & MMCST1_BUSY)) + break; + } + if (mmcst1 & MMCST1_BUSY) + { + mmc_dbg("still BUSY? bad ... \n"); + req->cmd->err = -RT_ETIMEOUT; + mmc_request_done(mmc, req); + return; + } + + host->do_dma = RT_FALSE; + mmc_dm365_prepare_data(host, req); + mmc_dm365_start_command(host, req->cmd); +} + +static void mmc_dm365_enable_sdio_irq(struct rt_mmcsd_host *mmc, rt_int32_t enable) +{ + struct mmc_dm365_host *host = mmc_priv(mmc); + + if (enable) + { + if (!(host->mmcsd_regs->SDIOST0 & SDIOST0_DAT1_HI)) + { + host->mmcsd_regs->SDIOIST = SDIOIST_IOINT; + sdio_irq_wakeup(host->mmc); + } + else + { + host->sdio_int = RT_TRUE; + host->mmcsd_regs->SDIOIEN |= SDIOIEN_IOINTEN; + } + } + else + { + host->sdio_int = RT_FALSE; + host->mmcsd_regs->SDIOIEN &= ~SDIOIEN_IOINTEN; + } +} + + +static const struct rt_mmcsd_host_ops mmc_dm365_ops = +{ + mmc_dm365_request, + mmc_dm365_set_ios, + RT_NULL, + mmc_dm365_enable_sdio_irq +}; + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_reset_ctrl() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚreset mmc¿ØÖÆÆ÷ +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** val -> ÅжÏ×öreset»¹ÊÇenable +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_reset_ctrl(struct mmc_dm365_host *host, int val) +{ + rt_uint32_t temp; + + temp = host->mmcsd_regs->MMCCTL; + + if (val) /* reset */ + temp |= MMCCTL_CMDRST | MMCCTL_DATRST; + else /* enable */ + temp &= ~(MMCCTL_CMDRST | MMCCTL_DATRST); + + host->mmcsd_regs->MMCCTL = temp; + + delay_us(10); +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: init_mmcsd_host() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚ³õʼ»¯DM365 MMCSD¿ØÖÆÆ÷ +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void init_mmcsd_host(struct mmc_dm365_host *host) +{ + mmc_dm365_reset_ctrl(host, 1); + + host->mmcsd_regs->MMCCLK = 0; + host->mmcsd_regs->MMCCLK = MMCCLK_CLKEN; + + host->mmcsd_regs->MMCTOR = 0x1FFF; + host->mmcsd_regs->MMCTOD = 0xFFFF; + + mmc_dm365_reset_ctrl(host, 0); +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_cmd_done() +** ¹¦ÄÜÃèÊö: ½áÊøSD ÃüÁîºóµ÷Óô˺¯Êý +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** cmd -> SD ÃüÁî½á¹¹¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_cmd_done(struct mmc_dm365_host *host, struct rt_mmcsd_cmd *cmd) +{ + host->cmd = RT_NULL; + + if (resp_type(cmd) != RESP_NONE) + { + if (resp_type(cmd) == RESP_R2) + { + /* response type 2 */ + cmd->resp[3] = host->mmcsd_regs->MMCRSP01; + cmd->resp[2] = host->mmcsd_regs->MMCRSP23; + cmd->resp[1] = host->mmcsd_regs->MMCRSP45; + cmd->resp[0] = host->mmcsd_regs->MMCRSP67; + } + else + { + /* response types 1, 1b, 3, 4, 5, 6 */ + cmd->resp[0] = host->mmcsd_regs->MMCRSP67; + } + } + + if (host->data == RT_NULL || cmd->err) + { + if (cmd->err == -RT_ETIMEOUT) + cmd->mrq->cmd->retries = 0; + mmc_request_done(host->mmc, cmd->mrq); + host->mmcsd_regs->MMCIM = 0; + } +} + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: dm365_abort_data() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚÖÕÖ¹Êý¾Ý´«Êä +** +** Êä¡¡Èë: host -> DM365 mmc host ¾ä±ú +** data -> data ½á¹¹¾ä±ú +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void dm365_abort_data(struct mmc_dm365_host *host, struct rt_mmcsd_data *data) +{ + mmc_dm365_reset_ctrl(host, 1); + mmc_dm365_reset_ctrl(host, 0); +} + +static void mmc_dm365_sdio_irq(int irq, void *param) +{ + struct mmc_dm365_host *host = (struct mmc_dm365_host *)param; + rt_uint32_t status; + + status = host->mmcsd_regs->SDIOIST;//readl(host->base + DAVINCI_SDIOIST); + if (status & SDIOIST_IOINT) { + mmc_dbg("SDIO interrupt status %x\n", status); + //writel(status | SDIOIST_IOINT, host->base + DAVINCI_SDIOIST); + host->mmcsd_regs->SDIOIST = status | SDIOIST_IOINT; + sdio_irq_wakeup(host->mmc); + } +} + + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: mmc_dm365_irq() +** ¹¦ÄÜÃèÊö: MMCSDµÄÖжϴ¦Àí³ÌÐò +** +** Êä¡¡Èë: irq ->ÖжÏÏòÁ¿ºÅ +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void mmc_dm365_irq(int irq, void *param) +{ + struct mmc_dm365_host *host = (struct mmc_dm365_host *)param; + rt_uint32_t status, qstatus; + int end_command = 0; + int end_transfer = 0; + struct rt_mmcsd_data *data = host->data; + + if (host->cmd == RT_NULL && host->data == RT_NULL) + { + status = host->mmcsd_regs->MMCST0; + mmc_dbg("Spurious interrupt 0x%04x\n", status); + /* Disable the interrupt from mmcsd */ + host->mmcsd_regs->MMCIM = 0; + return; + } + + status = host->mmcsd_regs->MMCST0; + qstatus = status; + + /* handle FIFO first when using PIO for data. + * bytes_left will decrease to zero as I/O progress and status will + * read zero over iteration because this controller status + * register(MMCST0) reports any status only once and it is cleared + * by read. So, it is not unbouned loop even in the case of + * non-dma. + */ + while (host->bytes_left && (status & (MMCST0_DXRDY | MMCST0_DRRDY))) + { + dm365_fifo_data_trans(host, rw_threshold); + status = host->mmcsd_regs->MMCST0; + if (!status) + break; + qstatus |= status; + } + + if (qstatus & MMCST0_DATDNE) + { + /* All blocks sent/received, and CRC checks passed */ + if (data != RT_NULL) + { + if ((host->do_dma == RT_FALSE) && (host->bytes_left > 0)) + { + /* if datasize < rw_threshold + * no RX ints are generated + */ + rt_kprintf("to do! host->bytes_left=0x%x\n", host->bytes_left); + dm365_fifo_data_trans(host, host->bytes_left); + } + end_transfer = 1; + data->bytes_xfered = data->blks* data->blksize; + } + else + { + mmc_dbg("DATDNE with no host->data\n"); + } + } + + if (qstatus & MMCST0_TOUTRD) + { + /* Read data timeout */ + data->err = -RT_ETIMEOUT; + end_transfer = 1; + + mmc_dbg("read data timeout, status %x\n", qstatus); + rt_kprintf("read data timeout, status %x\n", qstatus); + + dm365_abort_data(host, data); + } + + if (qstatus & (MMCST0_CRCWR | MMCST0_CRCRD)) + { + /* Data CRC error */ + data->err = -RT_ERROR; + end_transfer = 1; + + /* NOTE: this controller uses CRCWR to report both CRC + * errors and timeouts (on writes). MMCDRSP values are + * only weakly documented, but 0x9f was clearly a timeout + * case and the two three-bit patterns in various SD specs + * (101, 010) aren't part of it ... + */ + if (qstatus & MMCST0_CRCWR) + { + rt_uint32_t temp = host->mmcsd_regs->MMCDRSP; + + if (temp == 0x9f) + data->err = -RT_ETIMEOUT; + } + mmc_dbg("data %s %s error\n", (qstatus & MMCST0_CRCWR) ? "write" : "read", (data->err == -110) ? "timeout" : "CRC"); + + rt_kprintf("data %s %s error\n", (qstatus & MMCST0_CRCWR) ? "write" : "read", (data->err == -110) ? "timeout" : "CRC"); + + dm365_abort_data(host, data); + } + + if (qstatus & MMCST0_TOUTRS) + { + /* Command timeout */ + if (host->cmd) + { + mmc_dbg("CMD%d timeout, status %x\n", host->cmd->cmd_code, qstatus); + host->cmd->err = -RT_ETIMEOUT; + if (data) + { + end_transfer = 1; + dm365_abort_data(host, data); + } + else + end_command = 1; + } + } + + if (qstatus & MMCST0_CRCRS) + { + /* Command CRC error */ + mmc_dbg("Command CRC error\n"); + if (host->cmd) + { + host->cmd->err = -RT_ERROR; + end_command = 1; + } + } + + if (qstatus & MMCST0_RSPDNE) + { + /* End of command phase */ + end_command = (int) host->cmd; + } + + if (end_command) + mmc_dm365_cmd_done(host, host->cmd); + if (end_transfer) + mmc_dm365_xfer_done(host, data); + + return; +} +#if 0 + +/******************************************************************************************************* +** º¯ÊýÃû³Æ: rt_hw_edma_init() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚ³õʼ»¯EDMA3 +** +** Êä¡¡Èë: ÎÞ +** +** Êä¡¡³ö: ÎÞ +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +static void rt_hw_edma_init(void) +{ + psc_transition(PSC0, DOMAIN0, LPSC_TPCC, PSC_ENABLE); + psc_transition(PSC0, DOMAIN0, LPSC_TPTC0, PSC_ENABLE); + + /* Initialization of EDMA3 */ + edma3_init(EDMA0CC0_REG_BASE, EVT_QUEUE_NUM); + + /* Register EDMA3 Interrupts */ +// ConfigureAINTCIntEDMA3(); +} +#endif +/******************************************************************************************************* +** º¯ÊýÃû³Æ: rt_hw_mmcsd_init() +** ¹¦ÄÜÃèÊö: ´Ëº¯ÊýÓÃÓÚ³õʼ»¯MMCÇý¶¯Ä£¿é +** +** Êä¡¡Èë: ÎÞ +** +** Êä¡¡³ö: Èç¹û³õʼ»¯³É¹¦£¬·µ»Ø0£»Èç¹û³õʼ»¯Ê§°Ü£¬·µ»Ø-RT_ENOMEM +** +** È«¾Ö±äÁ¿: +** µ÷ÓÃÄ£¿é: ÎÞ +** +********************************************************************************************************/ +rt_int32_t rt_hw_mmcsd_init(void) +{ + struct clk *clk; + struct mmc_dm365_host *dm365_host; + struct rt_mmcsd_host *mmc = RT_NULL; + + mmc = mmcsd_alloc_host(); + if (!mmc) + { + mmc_dbg("alloc mmc failed\n"); + return -RT_ERROR; + } + + dm365_host = rt_malloc(sizeof(struct mmc_dm365_host)); + if (!dm365_host) + { + mmc_dbg("alloc mci failed\n"); + goto err; + } + + rt_memset(dm365_host, 0, sizeof(struct mmc_dm365_host)); + +#ifdef RT_USING_MMCSD0 + //psc_transition(PSC0, DOMAIN0, LPSC_MMCSD0, PSC_ENABLE); + //pinmux_config(PINMUX_MMCSD0_REG, PINMUX_MMCSD0_MASK, PINMUX_MMCSD0_VAL); + psc_change_state(DAVINCI_DM365_LPSC_MMC_SD0, PSC_ENABLE); + dm365_host->mmcsd_regs = (mmcsd_regs_t *)DM365_MMC_SD0_BASE; +#else +#ifdef RT_USING_MMCSD1 + psc_transition(PSC1, DOMAIN0, LPSC_MMCSD1, PSC_ENABLE); + pinmux_config(PINMUX_MMCSD1_REG, PINMUX_MMCSD1_MASK, PINMUX_MMCSD1_VAL); + dm365_host->mmcsd_regs = MMCSD1; +#endif +#endif + + //rt_hw_edma_init(); + + clk = clk_get("MMCSDCLK0"); + dm365_host->mmc_input_clk = clk_get_rate(clk); + dm365_host->rxdma = DM365_DMA_MMC0RXEVT; + dm365_host->txdma = DM365_DMA_MMC0TXEVT; + dm365_host->use_dma = use_dma; + if ((dm365_host->use_dma == RT_TRUE)&& acquire_dma_channels(dm365_host) != 0) + { + dm365_host->use_dma = RT_FALSE; + } + else + { + dm365_host->dma_buffer = (rt_uint8_t*)rt_malloc_align(64*1024, 32); + if (dm365_host->dma_buffer == RT_NULL) + dm365_host->use_dma = RT_FALSE; + } + + mmc->ops = &mmc_dm365_ops; + mmc->freq_min = 312500; + mmc->freq_max = 25000000; + mmc->valid_ocr = VDD_32_33 | VDD_33_34; + mmc->flags = MMCSD_BUSWIDTH_4 | MMCSD_MUTBLKWRITE; + mmc->flags |= MMCSD_SUP_SDIO_IRQ; + + dm365_host->mmc = mmc; + mmc->private_data = dm365_host; + + /* install interrupt */ +#ifdef RT_USING_MMCSD0 + rt_hw_interrupt_install(IRQ_DM3XX_MMCINT0, mmc_dm365_irq, + (void *)dm365_host, "MMC0"); + rt_hw_interrupt_umask(IRQ_DM3XX_MMCINT0); + rt_hw_interrupt_install(IRQ_DM3XX_SDIOINT0, mmc_dm365_sdio_irq, + (void *)dm365_host, "SDIO0"); + rt_hw_interrupt_umask(IRQ_DM3XX_SDIOINT0); +#endif +#ifdef RT_USING_MMCSD1 + rt_hw_interrupt_install(MMCSD_INT1, mmc_dm365_irq, + (void *)dm365_host, "MMC1"); + rt_hw_interrupt_umask(MMCSD_INT1); +#endif + + init_mmcsd_host(dm365_host); + + mmcsd_change(mmc); + + return 0; + +err: + mmcsd_free_host(mmc); + + return -RT_ENOMEM; +} diff --git a/bsp/dm365/drivers/mmcsd.h b/bsp/dm365/drivers/mmcsd.h new file mode 100644 index 0000000000000000000000000000000000000000..cb33a43c72c48e1d07aef888b835e1663de2b70e --- /dev/null +++ b/bsp/dm365/drivers/mmcsd.h @@ -0,0 +1,145 @@ +/* + * File : mmcsd.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#ifndef __DAVINCI_MMC_H__ +#define __DAVINCI_MMC_H__ + +/* DAVINCI_MMCCTL definitions */ +#define MMCCTL_DATRST (1 << 0) +#define MMCCTL_CMDRST (1 << 1) +#define MMCCTL_WIDTH_8_BIT (1 << 8) +#define MMCCTL_WIDTH_4_BIT (1 << 2) +#define MMCCTL_DATEG_DISABLED (0 << 6) +#define MMCCTL_DATEG_RISING (1 << 6) +#define MMCCTL_DATEG_FALLING (2 << 6) +#define MMCCTL_DATEG_BOTH (3 << 6) +#define MMCCTL_PERMDR_LE (0 << 9) +#define MMCCTL_PERMDR_BE (1 << 9) +#define MMCCTL_PERMDX_LE (0 << 10) +#define MMCCTL_PERMDX_BE (1 << 10) + +/* DAVINCI_MMCCLK definitions */ +#define MMCCLK_CLKEN (1 << 8) +#define MMCCLK_CLKRT_MASK (0xFF << 0) + +/* IRQ bit definitions, for DAVINCI_MMCST0 and DAVINCI_MMCIM */ +#define MMCST0_DATDNE (1 << 0) /* data done */ +#define MMCST0_BSYDNE (1 << 1) /* busy done */ +#define MMCST0_RSPDNE (1 << 2) /* command done */ +#define MMCST0_TOUTRD (1 << 3) /* data read timeout */ +#define MMCST0_TOUTRS (1 << 4) /* command response timeout */ +#define MMCST0_CRCWR (1 << 5) /* data write CRC error */ +#define MMCST0_CRCRD (1 << 6) /* data read CRC error */ +#define MMCST0_CRCRS (1 << 7) /* command response CRC error */ +#define MMCST0_DXRDY (1 << 9) /* data transmit ready (fifo empty) */ +#define MMCST0_DRRDY (1 << 10) /* data receive ready (data in fifo)*/ +#define MMCST0_DATED (1 << 11) /* DAT3 edge detect */ +#define MMCST0_TRNDNE (1 << 12) /* transfer done */ + +/* DAVINCI_MMCST1 definitions */ +#define MMCST1_BUSY (1 << 0) + +/* DAVINCI_MMCCMD definitions */ +#define MMCCMD_CMD_MASK (0x3F << 0) +#define MMCCMD_PPLEN (1 << 7) +#define MMCCMD_BSYEXP (1 << 8) +#define MMCCMD_RSPFMT_MASK (3 << 9) +#define MMCCMD_RSPFMT_NONE (0 << 9) +#define MMCCMD_RSPFMT_R1456 (1 << 9) +#define MMCCMD_RSPFMT_R2 (2 << 9) +#define MMCCMD_RSPFMT_R3 (3 << 9) +#define MMCCMD_DTRW (1 << 11) +#define MMCCMD_STRMTP (1 << 12) +#define MMCCMD_WDATX (1 << 13) +#define MMCCMD_INITCK (1 << 14) +#define MMCCMD_DCLR (1 << 15) +#define MMCCMD_DMATRIG (1 << 16) + +/* DAVINCI_MMCFIFOCTL definitions */ +#define MMCFIFOCTL_FIFORST (1 << 0) +#define MMCFIFOCTL_FIFODIR_WR (1 << 1) +#define MMCFIFOCTL_FIFODIR_RD (0 << 1) +#define MMCFIFOCTL_FIFOLEV (1 << 2) /* 0 = 128 bits, 1 = 256 bits */ +#define MMCFIFOCTL_ACCWD_4 (0 << 3) /* access width of 4 bytes */ +#define MMCFIFOCTL_ACCWD_3 (1 << 3) /* access width of 3 bytes */ +#define MMCFIFOCTL_ACCWD_2 (2 << 3) /* access width of 2 bytes */ +#define MMCFIFOCTL_ACCWD_1 (3 << 3) /* access width of 1 byte */ + +/* DAVINCI_SDIOST0 definitions */ +#define SDIOST0_DAT1_HI (1 << 0) +#define SDIOST0_INTPRD (1 << 1) +#define SDIOST0_RDWTST (1 << 2) + +/* DAVINCI_SDIOIEN definitions */ +#define SDIOIEN_IOINTEN (1 << 0) +#define SDIOIEN_RWSEN (1 << 1) + +/* DAVINCI_SDIOIST definitions */ +#define SDIOIST_IOINT (1 << 0) +#define SDIOIST_RWS (1 << 1) + +/* MMCSD Init clock in Hz in opendrain mode */ +#define MMCSD_INIT_CLOCK 200000 + +#define MAX_CCNT ((1 << 16) - 1) + +#define MAX_NR_SG 16 + +#define MMC_DATA_WRITE (1 << 8) +#define MMC_DATA_READ (1 << 9) +#define MMC_DATA_STREAM (1 << 10) + +typedef struct { + volatile rt_uint32_t MMCCTL; + volatile rt_uint32_t MMCCLK; + volatile rt_uint32_t MMCST0; + volatile rt_uint32_t MMCST1; + volatile rt_uint32_t MMCIM; + volatile rt_uint32_t MMCTOR; + volatile rt_uint32_t MMCTOD; + volatile rt_uint32_t MMCBLEN; + volatile rt_uint32_t MMCNBLK; + volatile rt_uint32_t MMCNBLC; + volatile rt_uint32_t MMCDRR; + volatile rt_uint32_t MMCDXR; + volatile rt_uint32_t MMCCMD; + volatile rt_uint32_t MMCARGHL; + volatile rt_uint32_t MMCRSP01; + volatile rt_uint32_t MMCRSP23; + volatile rt_uint32_t MMCRSP45; + volatile rt_uint32_t MMCRSP67; + volatile rt_uint32_t MMCDRSP; + volatile rt_uint32_t reserved0; + volatile rt_uint32_t MMCCIDX; + volatile rt_uint32_t reserved1[4]; + volatile rt_uint32_t SDIOCTL; + volatile rt_uint32_t SDIOST0; + volatile rt_uint32_t SDIOIEN; + volatile rt_uint32_t SDIOIST; + volatile rt_uint32_t MMCFIFOCTL; +}mmcsd_regs_t; + +extern rt_int32_t rt_hw_mmcsd_init(void); + +#endif diff --git a/bsp/dm365/drivers/spi-davinci.c b/bsp/dm365/drivers/spi-davinci.c new file mode 100644 index 0000000000000000000000000000000000000000..20bf9d9e3e3e79a6c0c6ef9cdb76eefa17198988 --- /dev/null +++ b/bsp/dm365/drivers/spi-davinci.c @@ -0,0 +1,963 @@ +/* + * File : spi-davinci.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#include +#include +#include +#include +#include +#include "spi-davinci.h" + +#define unlikely(x) x + +#define barrier() __asm__ __volatile__("": : :"memory") +#define cpu_relax() barrier() + +#define SPI_DEBUG 0 +#if SPI_DEBUG +#define spi_dbg(dev, fmt, ...) \ + do { \ + rt_kprintf("%s:", dev->parent.name); \ + rt_kprintf(fmt, ##__VA_ARGS__); \ + } while(0) +#else +#define spi_dbg(dev, fmt, ...) +#endif + +#define SZ_64K 0x10000 +#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) + +#define SPI_NO_RESOURCE ((resource_size_t)-1) + +#define SPI_MAX_CHIPSELECT 2 + +#define CS_DEFAULT 0xFF + +#define __iomem +#define BIT(nr) (1UL << (nr)) + +#define SPIFMT_PHASE_MASK BIT(16) +#define SPIFMT_POLARITY_MASK BIT(17) +#define SPIFMT_DISTIMER_MASK BIT(18) +#define SPIFMT_SHIFTDIR_MASK BIT(20) +#define SPIFMT_WAITENA_MASK BIT(21) +#define SPIFMT_PARITYENA_MASK BIT(22) +#define SPIFMT_ODD_PARITY_MASK BIT(23) +#define SPIFMT_WDELAY_MASK 0x3f000000u +#define SPIFMT_WDELAY_SHIFT 24 +#define SPIFMT_PRESCALE_SHIFT 8 + +/* SPIPC0 */ +#define SPIPC0_DIFUN_MASK BIT(11) /* MISO */ +#define SPIPC0_DOFUN_MASK BIT(10) /* MOSI */ +#define SPIPC0_CLKFUN_MASK BIT(9) /* CLK */ +#define SPIPC0_SPIENA_MASK BIT(8) /* nREADY */ + +#define SPIINT_MASKALL 0x0101035F +#define SPIINT_MASKINT 0x0000015F +#define SPI_INTLVL_1 0x000001FF +#define SPI_INTLVL_0 0x00000000 + +/* SPIDAT1 (upper 16 bit defines) */ +#define SPIDAT1_CSHOLD_MASK BIT(12) + +/* SPIGCR1 */ +#define SPIGCR1_CLKMOD_MASK BIT(1) +#define SPIGCR1_MASTER_MASK BIT(0) +#define SPIGCR1_POWERDOWN_MASK BIT(8) +#define SPIGCR1_LOOPBACK_MASK BIT(16) +#define SPIGCR1_SPIENA_MASK BIT(24) + +/* SPIBUF */ +#define SPIBUF_TXFULL_MASK BIT(29) +#define SPIBUF_RXEMPTY_MASK BIT(31) + +/* SPIDELAY */ +#define SPIDELAY_C2TDELAY_SHIFT 24 +#define SPIDELAY_C2TDELAY_MASK (0xFF << SPIDELAY_C2TDELAY_SHIFT) +#define SPIDELAY_T2CDELAY_SHIFT 16 +#define SPIDELAY_T2CDELAY_MASK (0xFF << SPIDELAY_T2CDELAY_SHIFT) +#define SPIDELAY_T2EDELAY_SHIFT 8 +#define SPIDELAY_T2EDELAY_MASK (0xFF << SPIDELAY_T2EDELAY_SHIFT) +#define SPIDELAY_C2EDELAY_SHIFT 0 +#define SPIDELAY_C2EDELAY_MASK 0xFF + +/* Error Masks */ +#define SPIFLG_DLEN_ERR_MASK BIT(0) +#define SPIFLG_TIMEOUT_MASK BIT(1) +#define SPIFLG_PARERR_MASK BIT(2) +#define SPIFLG_DESYNC_MASK BIT(3) +#define SPIFLG_BITERR_MASK BIT(4) +#define SPIFLG_OVRRUN_MASK BIT(6) +#define SPIFLG_BUF_INIT_ACTIVE_MASK BIT(24) +#define SPIFLG_ERROR_MASK (SPIFLG_DLEN_ERR_MASK \ + | SPIFLG_TIMEOUT_MASK | SPIFLG_PARERR_MASK \ + | SPIFLG_DESYNC_MASK | SPIFLG_BITERR_MASK \ + | SPIFLG_OVRRUN_MASK) + +#define SPIINT_DMA_REQ_EN BIT(16) + +/* SPI Controller registers */ +#define SPIGCR0 0x00 +#define SPIGCR1 0x04 +#define SPIINT 0x08 +#define SPILVL 0x0c +#define SPIFLG 0x10 +#define SPIPC0 0x14 +#define SPIDAT1 0x3c +#define SPIBUF 0x40 +#define SPIDELAY 0x48 +#define SPIDEF 0x4c +#define SPIFMT0 0x50 + +/* We have 2 DMA channels per CS, one for RX and one for TX */ +struct davinci_spi_dma { + int tx_channel; + int rx_channel; + int dummy_param_slot; + enum dma_event_q eventq; +}; + +/* SPI Controller driver's private data. */ +struct davinci_spi { + struct rt_spi_bus parent; + struct clk *clk; + + u8 version; + void __iomem *base; + u32 irq; + struct rt_completion done; + + const void *tx; + void *rx; +#define SMP_CACHE_BYTES 32 +#define SPI_TMP_BUFSZ (SMP_CACHE_BYTES + 1) + u8 rx_tmp_buf[SPI_TMP_BUFSZ]; + int rcount; + int wcount; + struct davinci_spi_dma dma; + + void (*get_rx)(u32 rx_data, struct davinci_spi *); + u32 (*get_tx)(struct davinci_spi *); + + u8 bytes_per_word[SPI_MAX_CHIPSELECT]; + u8 chip_sel[SPI_MAX_CHIPSELECT]; + struct davinci_spi_config *controller_data; + int cshold_bug; +}; + +static struct davinci_spi_config davinci_spi_default_cfg; + +extern void mmu_clean_dcache(rt_uint32_t buffer, rt_uint32_t size); +extern void mmu_invalidate_dcache(rt_uint32_t buffer, rt_uint32_t size); + +static void davinci_spi_rx_buf_u8(u32 data, struct davinci_spi *dspi) +{ + if (dspi->rx) { + u8 *rx = dspi->rx; + *rx++ = (u8)data; + dspi->rx = rx; + } +} + +static void davinci_spi_rx_buf_u16(u32 data, struct davinci_spi *dspi) +{ + if (dspi->rx) { + u16 *rx = dspi->rx; + *rx++ = (u16)data; + dspi->rx = rx; + } +} + +static u32 davinci_spi_tx_buf_u8(struct davinci_spi *dspi) +{ + u32 data = 0; + if (dspi->tx) { + const u8 *tx = dspi->tx; + data = *tx++; + dspi->tx = tx; + } + return data; +} + +static u32 davinci_spi_tx_buf_u16(struct davinci_spi *dspi) +{ + u32 data = 0; + if (dspi->tx) { + const u16 *tx = dspi->tx; + data = *tx++; + dspi->tx = tx; + } + return data; +} + +static inline void set_io_bits(void __iomem *addr, u32 bits) +{ + u32 v = readl(addr); + + v |= bits; + writel(v, addr); +} + +static inline void clear_io_bits(void __iomem *addr, u32 bits) +{ + u32 v = readl(addr); + + v &= ~bits; + writel(v, addr); +} + +/* + * Interface to control the chip select signal + */ +static void davinci_spi_chipselect(struct rt_spi_device *spi, int value) +{ + struct davinci_spi *dspi; + u8 chip_sel = (u8)spi->parent.user_data; + u16 spidat1 = CS_DEFAULT; + bool gpio_chipsel = RT_FALSE; + + dspi = spi->bus->parent.user_data; + + if (chip_sel < SPI_MAX_CHIPSELECT && + dspi->chip_sel[chip_sel] != SPI_INTERN_CS) + gpio_chipsel = RT_TRUE; + + /* + * Board specific chip select logic decides the polarity and cs + * line for the controller + */ + if (gpio_chipsel) { + if (value == 0) + gpio_set_value(dspi->chip_sel[chip_sel], 0); + else + gpio_set_value(dspi->chip_sel[chip_sel], 1); + } else { + spidat1 = readw(dspi->base + SPIDAT1 + 2); + if (value == 0) { + spidat1 |= SPIDAT1_CSHOLD_MASK; + spidat1 &= ~(0x1 << chip_sel); + } else { + spidat1 &= ~SPIDAT1_CSHOLD_MASK; + spidat1 |= 0x03; + } + rt_kprintf("0x%04x\n", spidat1); + + writew(spidat1, dspi->base + SPIDAT1 + 2); + } +} + +/** + * davinci_spi_get_prescale - Calculates the correct prescale value + * @maxspeed_hz: the maximum rate the SPI clock can run at + * + * This function calculates the prescale value that generates a clock rate + * less than or equal to the specified maximum. + * + * Returns: calculated prescale - 1 for easy programming into SPI registers + * or negative error number if valid prescalar cannot be updated. + */ +static inline int davinci_spi_get_prescale(struct davinci_spi *dspi, + u32 max_speed_hz) +{ + int ret; + + ret = DIV_ROUND_UP(clk_get_rate(dspi->clk), max_speed_hz); + + if (ret < 3) { + rt_kprintf("spi clock freq too high\n"); + ret = 3; + } + if (ret > 256) { + rt_kprintf("spi clock freq too litter\n"); + ret = 256; + } + + /*if (ret < 3 || ret > 256) + return -RT_ERROR;*/ + + return ret - 1; +} + +/** + * davinci_spi_setup_transfer - This functions will determine transfer method + * @spi: spi device on which data transfer to be done + * @t: spi transfer in which transfer info is filled + * + * This function determines data transfer method (8/16/32 bit transfer). + * It will also set the SPI Clock Control register according to + * SPI slave device freq. + */ +static int davinci_spi_setup_transfer(struct rt_spi_device *spi, + struct rt_spi_configuration *cfg) +{ + + struct davinci_spi *dspi; + struct davinci_spi_config *spicfg; + u8 bits_per_word = 0; + u32 hz = 0, spifmt = 0, prescale = 0; + u8 chip_select = (u8)spi->parent.user_data; + + dspi = spi->bus->parent.user_data; + + bits_per_word = cfg->data_width; + hz = cfg->max_hz; + + /* + * Assign function pointer to appropriate transfer method + * 8bit, 16bit or 32bit transfer + */ + if (bits_per_word <= 8 && bits_per_word >= 2) { + dspi->get_rx = davinci_spi_rx_buf_u8; + dspi->get_tx = davinci_spi_tx_buf_u8; + dspi->bytes_per_word[chip_select] = 1; + } else if (bits_per_word <= 16 && bits_per_word >= 2) { + dspi->get_rx = davinci_spi_rx_buf_u16; + dspi->get_tx = davinci_spi_tx_buf_u16; + dspi->bytes_per_word[chip_select] = 2; + } else + return -RT_ERROR; + + /* Set up SPIFMTn register, unique to this chipselect. */ + + prescale = davinci_spi_get_prescale(dspi, hz); + if (prescale < 0) + return prescale; + + spifmt = (prescale << SPIFMT_PRESCALE_SHIFT) | (bits_per_word & 0x1f); + + if (!(cfg->mode & RT_SPI_MSB)) + spifmt |= SPIFMT_SHIFTDIR_MASK; + + if (cfg->mode & RT_SPI_CPOL) + spifmt |= SPIFMT_POLARITY_MASK; + + if (!(cfg->mode & RT_SPI_CPHA)) + spifmt |= SPIFMT_PHASE_MASK; + + /* + * Version 1 hardware supports two basic SPI modes: + * - Standard SPI mode uses 4 pins, with chipselect + * - 3 pin SPI is a 4 pin variant without CS (SPI_NO_CS) + * (distinct from SPI_3WIRE, with just one data wire; + * or similar variants without MOSI or without MISO) + * + * Version 2 hardware supports an optional handshaking signal, + * so it can support two more modes: + * - 5 pin SPI variant is standard SPI plus SPI_READY + * - 4 pin with enable is (SPI_READY | SPI_NO_CS) + */ + + if (dspi->version == SPI_VERSION_2) { + + u32 delay = 0; + + spifmt |= ((spicfg->wdelay << SPIFMT_WDELAY_SHIFT) + & SPIFMT_WDELAY_MASK); + + if (spicfg->odd_parity) + spifmt |= SPIFMT_ODD_PARITY_MASK; + + if (spicfg->parity_enable) + spifmt |= SPIFMT_PARITYENA_MASK; + + if (spicfg->timer_disable) { + spifmt |= SPIFMT_DISTIMER_MASK; + } else { + delay |= (spicfg->c2tdelay << SPIDELAY_C2TDELAY_SHIFT) + & SPIDELAY_C2TDELAY_MASK; + delay |= (spicfg->t2cdelay << SPIDELAY_T2CDELAY_SHIFT) + & SPIDELAY_T2CDELAY_MASK; + } + + if (cfg->mode & RT_SPI_READY) { + spifmt |= SPIFMT_WAITENA_MASK; + delay |= (spicfg->t2edelay << SPIDELAY_T2EDELAY_SHIFT) + & SPIDELAY_T2EDELAY_MASK; + delay |= (spicfg->c2edelay << SPIDELAY_C2EDELAY_SHIFT) + & SPIDELAY_C2EDELAY_MASK; + } + + writel(delay, dspi->base + SPIDELAY); + } + + writel(spifmt, dspi->base + SPIFMT0); + + return 0; +} + +#if 0 +/** + * davinci_spi_setup - This functions will set default transfer method + * @spi: spi device on which data transfer to be done + * + * This functions sets the default transfer method. + */ +static int davinci_spi_setup(struct spi_device *spi) +{ + int retval = 0; + struct davinci_spi *dspi; + struct davinci_spi_platform_data *pdata; + + dspi = spi_master_get_devdata(spi->master); + pdata = dspi->pdata; + + /* if bits per word length is zero then set it default 8 */ + if (!spi->bits_per_word) + spi->bits_per_word = 8; + + if (!(spi->mode & SPI_NO_CS)) { + if ((pdata->chip_sel == NULL) || + (pdata->chip_sel[spi->chip_select] == SPI_INTERN_CS)) + set_io_bits(dspi->base + SPIPC0, 1 << spi->chip_select); + + } + + if (spi->mode & SPI_READY) + set_io_bits(dspi->base + SPIPC0, SPIPC0_SPIENA_MASK); + + if (spi->mode & SPI_LOOP) + set_io_bits(dspi->base + SPIGCR1, SPIGCR1_LOOPBACK_MASK); + else + clear_io_bits(dspi->base + SPIGCR1, SPIGCR1_LOOPBACK_MASK); + + return retval; +} +#endif + +static int davinci_spi_check_error(struct davinci_spi *dspi, int int_status) +{ + struct rt_device *sdev = &dspi->parent.parent; + + if (int_status & SPIFLG_TIMEOUT_MASK) { + spi_dbg(sdev, "SPI Time-out Error\n"); + return -RT_ETIMEOUT; + } + if (int_status & SPIFLG_DESYNC_MASK) { + spi_dbg(sdev, "SPI Desynchronization Error\n"); + return -RT_EIO; + } + if (int_status & SPIFLG_BITERR_MASK) { + spi_dbg(sdev, "SPI Bit error\n"); + return -RT_EIO; + } + + if (dspi->version == SPI_VERSION_2) { + if (int_status & SPIFLG_DLEN_ERR_MASK) { + spi_dbg(sdev, "SPI Data Length Error\n"); + return -RT_EIO; + } + if (int_status & SPIFLG_PARERR_MASK) { + spi_dbg(sdev, "SPI Parity Error\n"); + return -RT_EIO; + } + if (int_status & SPIFLG_OVRRUN_MASK) { + spi_dbg(sdev, "SPI Data Overrun error\n"); + return -RT_EIO; + } + if (int_status & SPIFLG_BUF_INIT_ACTIVE_MASK) { + spi_dbg(sdev, "SPI Buffer Init Active\n"); + return -RT_EBUSY; + } + } + + return 0; +} + +/** + * davinci_spi_process_events - check for and handle any SPI controller events + * @dspi: the controller data + * + * This function will check the SPIFLG register and handle any events that are + * detected there + */ +static int davinci_spi_process_events(struct davinci_spi *dspi) +{ + u32 buf, status, errors = 0, spidat1; + + buf = readl(dspi->base + SPIBUF); + + if (dspi->rcount > 0 && !(buf & SPIBUF_RXEMPTY_MASK)) { + dspi->get_rx(buf & 0xFFFF, dspi); + dspi->rcount--; + } + + status = readl(dspi->base + SPIFLG); + + if (unlikely(status & SPIFLG_ERROR_MASK)) { + errors = status & SPIFLG_ERROR_MASK; + goto out; + } + + if (dspi->wcount > 0 && !(buf & SPIBUF_TXFULL_MASK)) { + spidat1 = readl(dspi->base + SPIDAT1); + dspi->wcount--; + spidat1 &= ~0xFFFF; + spidat1 |= 0xFFFF & dspi->get_tx(dspi); + writel(spidat1, dspi->base + SPIDAT1); + } + +out: + return errors; +} + +static void davinci_spi_dma_callback(unsigned lch, u16 status, void *data) +{ + struct davinci_spi *dspi = data; + struct davinci_spi_dma *dma = &dspi->dma; + + edma_stop(lch); + + if (status == DMA_COMPLETE) { + if (lch == dma->rx_channel) + dspi->rcount = 0; + if (lch == dma->tx_channel) + dspi->wcount = 0; + } + + if ((!dspi->wcount && !dspi->rcount) || (status != DMA_COMPLETE)) + rt_completion_done(&dspi->done); +} + +/** + * davinci_spi_bufs - functions which will handle transfer data + * @spi: spi device on which data transfer to be done + * @t: spi transfer in which transfer info is filled + * + * This function will put data to be transferred into data register + * of SPI controller and then wait until the completion will be marked + * by the IRQ Handler. + */ +static int davinci_spi_bufs(struct rt_spi_device *spi, struct rt_spi_message *msg) +{ + struct davinci_spi *dspi; + int data_type, ret; + u32 tx_data, spidat1; + u32 errors = 0; + struct davinci_spi_config *spicfg; + unsigned rx_buf_count; + struct rt_device *sdev; + u8 chip_select = (u8)spi->parent.user_data; + + dspi = spi->bus->parent.user_data; + spicfg = (struct davinci_spi_config *)dspi->controller_data; + if (!spicfg) + spicfg = &davinci_spi_default_cfg; + sdev = &dspi->parent.parent; + + /* convert len to words based on bits_per_word */ + data_type = dspi->bytes_per_word[chip_select]; + + dspi->tx = msg->send_buf; + dspi->rx = msg->recv_buf; + dspi->wcount = msg->length / data_type; + dspi->rcount = dspi->wcount; + + spidat1 = readl(dspi->base + SPIDAT1); + + clear_io_bits(dspi->base + SPIGCR1, SPIGCR1_POWERDOWN_MASK); + set_io_bits(dspi->base + SPIGCR1, SPIGCR1_SPIENA_MASK); + + rt_completion_init(&(dspi->done)); + + if (msg->cs_take) + davinci_spi_chipselect(spi, 0); + + if (spicfg->io_type == SPI_IO_TYPE_INTR) + set_io_bits(dspi->base + SPIINT, SPIINT_MASKINT); + + if (msg->length > 0) { + if (spicfg->io_type != SPI_IO_TYPE_DMA) { + /* start the transfer */ + dspi->wcount--; + tx_data = dspi->get_tx(dspi); + spidat1 &= 0xFFFF0000; + spidat1 |= tx_data & 0xFFFF; + writel(spidat1, dspi->base + SPIDAT1); + } else { + struct davinci_spi_dma *dma; + unsigned long tx_reg, rx_reg; + struct edmacc_param param; + void *rx_buf; + int b, c; + + dma = &dspi->dma; + + tx_reg = (unsigned long)dspi->base + SPIDAT1; + rx_reg = (unsigned long)dspi->base + SPIBUF; + + /* + * Transmit DMA setup + * + * If there is transmit data, map the transmit buffer, set it + * as the source of data and set the source B index to data + * size. If there is no transmit data, set the transmit register + * as the source of data, and set the source B index to zero. + * + * The destination is always the transmit register itself. And + * the destination never increments. + */ + + if (msg->send_buf) { + mmu_clean_dcache((rt_uint32_t)msg->send_buf, (rt_uint32_t)msg->length); + } + + /* + * If number of words is greater than 65535, then we need + * to configure a 3 dimension transfer. Use the BCNTRLD + * feature to allow for transfers that aren't even multiples + * of 65535 (or any other possible b size) by first transferring + * the remainder amount then grabbing the next N blocks of + * 65535 words. + */ + + c = dspi->wcount / (SZ_64K - 1); /* N 65535 Blocks */ + b = dspi->wcount - c * (SZ_64K - 1); /* Remainder */ + if (b) + c++; + else + b = SZ_64K - 1; + + param.opt = TCINTEN | EDMA_TCC(dma->tx_channel); + param.src = msg->send_buf ? msg->send_buf : tx_reg; + param.a_b_cnt = b << 16 | data_type; + param.dst = tx_reg; + param.src_dst_bidx = msg->send_buf ? data_type : 0; + param.link_bcntrld = 0xffffffff; + param.src_dst_cidx = msg->send_buf ? data_type : 0; + param.ccnt = c; + edma_write_slot(dma->tx_channel, ¶m); + edma_link(dma->tx_channel, dma->dummy_param_slot); + + /* + * Receive DMA setup + * + * If there is receive buffer, use it to receive data. If there + * is none provided, use a temporary receive buffer. Set the + * destination B index to 0 so effectively only one byte is used + * in the temporary buffer (address does not increment). + * + * The source of receive data is the receive data register. The + * source address never increments. + */ + + if (msg->recv_buf) { + rx_buf = msg->recv_buf; + rx_buf_count = msg->length; + } else { + rx_buf = dspi->rx_tmp_buf; + rx_buf_count = sizeof(dspi->rx_tmp_buf); + } + + mmu_invalidate_dcache((rt_uint32_t)rx_buf, (rt_uint32_t)rx_buf_count); + + param.opt = TCINTEN | EDMA_TCC(dma->rx_channel); + param.src = rx_reg; + param.a_b_cnt = b << 16 | data_type; + param.dst = rx_buf; + param.src_dst_bidx = (msg->recv_buf ? data_type : 0) << 16; + param.link_bcntrld = 0xffffffff; + param.src_dst_cidx = (msg->recv_buf ? data_type : 0) << 16; + param.ccnt = c; + edma_write_slot(dma->rx_channel, ¶m); + + if (dspi->cshold_bug) + writew(spidat1 >> 16, dspi->base + SPIDAT1 + 2); + + edma_start(dma->rx_channel); + edma_start(dma->tx_channel); + set_io_bits(dspi->base + SPIINT, SPIINT_DMA_REQ_EN); + } + + /* Wait for the transfer to complete */ + if (spicfg->io_type != SPI_IO_TYPE_POLL) { + rt_completion_wait(&(dspi->done), RT_WAITING_FOREVER); + } else { + while (dspi->rcount > 0 || dspi->wcount > 0) { + errors = davinci_spi_process_events(dspi); + if (errors) + break; + cpu_relax(); + } + } + } + + if (msg->cs_release) + davinci_spi_chipselect(spi, 1); + + clear_io_bits(dspi->base + SPIINT, SPIINT_MASKALL); + if (spicfg->io_type == SPI_IO_TYPE_DMA) { + clear_io_bits(dspi->base + SPIINT, SPIINT_DMA_REQ_EN); + } + + clear_io_bits(dspi->base + SPIGCR1, SPIGCR1_SPIENA_MASK); + set_io_bits(dspi->base + SPIGCR1, SPIGCR1_POWERDOWN_MASK); + + /* + * Check for bit error, desync error,parity error,timeout error and + * receive overflow errors + */ + if (errors) { + ret = davinci_spi_check_error(dspi, errors); + rt_kprintf("%s: error reported but no error found!\n", + spi->bus->parent.parent.name); + return ret; + } + + if (dspi->rcount != 0 || dspi->wcount != 0) { + spi_dbg(sdev, "SPI data transfer error\n"); + return -RT_EIO; + } + + return msg->length; +} + +/** + * davinci_spi_irq - Interrupt handler for SPI Master Controller + * @irq: IRQ number for this SPI Master + * @context_data: structure for SPI Master controller davinci_spi + * + * ISR will determine that interrupt arrives either for READ or WRITE command. + * According to command it will do the appropriate action. It will check + * transfer length and if it is not zero then dispatch transfer command again. + * If transfer length is zero then it will indicate the COMPLETION so that + * davinci_spi_bufs function can go ahead. + */ +static void davinci_spi_irq(int irq, void *data) +{ + struct davinci_spi *dspi = data; + int status; + + status = davinci_spi_process_events(dspi); + if (unlikely(status != 0)) + clear_io_bits(dspi->base + SPIINT, SPIINT_MASKINT); + + if ((!dspi->rcount && !dspi->wcount) || status) + rt_completion_done(&dspi->done); +} + +static int davinci_spi_request_dma(struct davinci_spi *dspi) +{ + int r; + struct davinci_spi_dma *dma = &dspi->dma; + + r = edma_alloc_channel(dma->rx_channel, davinci_spi_dma_callback, dspi, + dma->eventq); + if (r < 0) { + rt_kprintf("Unable to request DMA channel for SPI RX\n"); + r = -RT_EFULL; + goto rx_dma_failed; + } + + r = edma_alloc_channel(dma->tx_channel, davinci_spi_dma_callback, dspi, + dma->eventq); + if (r < 0) { + rt_kprintf("Unable to request DMA channel for SPI TX\n"); + r = -RT_EFULL; + goto tx_dma_failed; + } + + r = edma_alloc_slot(EDMA_CTLR(dma->tx_channel), EDMA_SLOT_ANY); + if (r < 0) { + rt_kprintf("Unable to request SPI TX DMA param slot\n"); + r = -RT_EFULL; + goto param_failed; + } + dma->dummy_param_slot = r; + edma_link(dma->dummy_param_slot, dma->dummy_param_slot); + + return 0; +param_failed: + edma_free_channel(dma->tx_channel); +tx_dma_failed: + edma_free_channel(dma->rx_channel); +rx_dma_failed: + return r; +} + +static rt_err_t configure(struct rt_spi_device *device, + struct rt_spi_configuration *configuration) +{ + return davinci_spi_setup_transfer(device, configuration); +} + +static rt_uint32_t xfer(struct rt_spi_device *device, struct rt_spi_message *message) +{ + return davinci_spi_bufs(device, message); +}; + + + +static struct rt_spi_ops davinci_spi_ops = +{ + configure, + xfer +}; + +static void udelay (volatile rt_uint32_t us) +{ + volatile rt_int32_t i; + for (; us > 0; us--) + { + i = 5000; + while(i > 0) + { + i--; + } + } +} + +void spi_pin_cfg(void) +{ + rt_uint32_t val; + + val = davinci_readl(PINMUX3); + val |= 0x80000000; /* SPI1 */ + davinci_writel(val, PINMUX3); + + val = davinci_readl(PINMUX4); + val &= 0xffffffc0; /* SPI1 */ + val |= 0x05;//0x00000015; /* SPI1 */ + davinci_writel(val, PINMUX4); +} + +/** + * davinci_spi_probe - probe function for SPI Master Controller + * @pdev: platform_device structure which contains plateform specific data + * + * According to Linux Device Model this function will be invoked by Linux + * with platform_device struct which contains the device specific info. + * This function will map the SPI controller's memory, register IRQ, + * Reset SPI controller and setting its registers to default value. + * It will invoke spi_bitbang_start to create work queue so that client driver + * can register transfer method to work queue. + */ +static int davinci_spi_probe(struct davinci_spi *dspi, char *spi_bus_name) +{ + int i = 0, ret = 0; + u32 spipc0; + + spi_pin_cfg(); + psc_change_state(DAVINCI_DM365_LPSC_SPI1, PSC_ENABLE); + + dspi->base = DM3XX_SPI1_BASE;//spi; + + dspi->irq = IRQ_DM3XX_SPINT1_0; + + rt_hw_interrupt_install(dspi->irq, davinci_spi_irq, dspi, spi_bus_name); + rt_hw_interrupt_umask(dspi->irq); + + dspi->clk = clk_get("SPICLK"); + + dspi->version = SPI_VERSION_1; + dspi->chip_sel[0] = 29;//SPI_INTERN_CS; + dspi->chip_sel[1] = 0;//GPIO0 + + dspi->dma.rx_channel = 15; + dspi->dma.tx_channel = 14; + dspi->dma.eventq = EVENTQ_3; + + ret = davinci_spi_request_dma(dspi); + if (ret) + goto err; + + rt_kprintf("%s: DMA: supported\n", spi_bus_name); + rt_kprintf("%s: DMA: RX channel: %d, TX channel: %d, " + "event queue: %d\n", spi_bus_name, dspi->dma.rx_channel, + dspi->dma.tx_channel, dspi->dma.eventq); + + dspi->get_rx = davinci_spi_rx_buf_u8; + dspi->get_tx = davinci_spi_tx_buf_u8; + + rt_completion_init(&dspi->done); + + /* Reset In/OUT SPI module */ + writel(0, dspi->base + SPIGCR0); + udelay(100); + writel(1, dspi->base + SPIGCR0); + + /* Set up SPIPC0. CS and ENA init is done in davinci_spi_setup */ + spipc0 = SPIPC0_DIFUN_MASK | SPIPC0_DOFUN_MASK | SPIPC0_CLKFUN_MASK; + writel(spipc0, dspi->base + SPIPC0); + + /* initialize chip selects */ + for (i = 0; i < SPI_MAX_CHIPSELECT; i++) { + if (dspi->chip_sel[i] != SPI_INTERN_CS) + gpio_direction_output(dspi->chip_sel[i], 1); + } + + if (0) + writel(SPI_INTLVL_1, dspi->base + SPILVL); + else + writel(SPI_INTLVL_0, dspi->base + SPILVL); + + writel(CS_DEFAULT, dspi->base + SPIDEF); + + /* master mode default */ + set_io_bits(dspi->base + SPIGCR1, SPIGCR1_CLKMOD_MASK); + set_io_bits(dspi->base + SPIGCR1, SPIGCR1_MASTER_MASK); + set_io_bits(dspi->base + SPIGCR1, SPIGCR1_POWERDOWN_MASK); + + //set_io_bits(dspi->base + SPIGCR1, SPIGCR1_LOOPBACK_MASK);//LOOP BACK mode + + rt_kprintf("%s: Controller at 0x%p\n", spi_bus_name, dspi->base); + + dspi->parent.parent.user_data = dspi; + + return rt_spi_bus_register(&dspi->parent, spi_bus_name, &davinci_spi_ops); + + return ret; + +free_dma: + edma_free_channel(dspi->dma.tx_channel); + edma_free_channel(dspi->dma.rx_channel); + edma_free_slot(dspi->dma.dummy_param_slot); + +err: + return ret; +} + + +int rt_hw_spi_init(void) +{ + /* register spi bus */ + { + static struct davinci_spi dspi; + rt_memset(&dspi, 0, sizeof(dspi)); + davinci_spi_probe(&dspi, "spi1"); + } + /* attach cs */ + { + static struct rt_spi_device spi_device; + rt_spi_bus_attach_device(&spi_device, "spi10", "spi1", (void *)0); + } + { + static struct rt_spi_device spi_device; + rt_spi_bus_attach_device(&spi_device, "spi11", "spi1", (void *)1); + } + + return 0; +} + + diff --git a/bsp/dm365/drivers/spi-davinci.h b/bsp/dm365/drivers/spi-davinci.h new file mode 100644 index 0000000000000000000000000000000000000000..07e8bef4dfa37d8238834ff451b7cfe1de65b840 --- /dev/null +++ b/bsp/dm365/drivers/spi-davinci.h @@ -0,0 +1,75 @@ +/* + * File : spi-davinci.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#ifndef __DAVINCI_SPI_H +#define __DAVINCI_SPI_H + +typedef unsigned long u32; +typedef unsigned short u16; +typedef unsigned char u8; +typedef unsigned int bool; + +#define SPI_INTERN_CS 0xFF + +enum { + SPI_VERSION_1, /* For DM355/DM365/DM6467 */ + SPI_VERSION_2, /* For DA8xx */ +}; + +/** + * davinci_spi_config - Per-chip-select configuration for SPI slave devices + * + * @wdelay: amount of delay between transmissions. Measured in number of + * SPI module clocks. + * @odd_parity: polarity of parity flag at the end of transmit data stream. + * 0 - odd parity, 1 - even parity. + * @parity_enable: enable transmission of parity at end of each transmit + * data stream. + * @io_type: type of IO transfer. Choose between polled, interrupt and DMA. + * @timer_disable: disable chip-select timers (setup and hold) + * @c2tdelay: chip-select setup time. Measured in number of SPI module clocks. + * @t2cdelay: chip-select hold time. Measured in number of SPI module clocks. + * @t2edelay: transmit data finished to SPI ENAn pin inactive time. Measured + * in number of SPI clocks. + * @c2edelay: chip-select active to SPI ENAn signal active time. Measured in + * number of SPI clocks. + */ +struct davinci_spi_config { + u8 wdelay; + u8 odd_parity; + u8 parity_enable; +#define SPI_IO_TYPE_INTR 0 +#define SPI_IO_TYPE_POLL 1 +#define SPI_IO_TYPE_DMA 2 + u8 io_type; + u8 timer_disable; + u8 c2tdelay; + u8 t2cdelay; + u8 t2edelay; + u8 c2edelay; +}; + +extern int rt_hw_spi_init(void); + +#endif /* __DAVINCI_SPI_H */ diff --git a/bsp/dm365/platform/SConscript b/bsp/dm365/platform/SConscript new file mode 100644 index 0000000000000000000000000000000000000000..d2108360e5f71ac359e0ca882ea3a5842415b652 --- /dev/null +++ b/bsp/dm365/platform/SConscript @@ -0,0 +1,22 @@ +Import('RTT_ROOT') +from building import * + +cwd = GetCurrentDir() +src = Split(""" +start_gcc.S +dm365.c +dma.c +findbit.S +interrupt.c +psc.c +reset.c +system_clock.c +trap.c +""") + +# The set of source files associated with this SConscript file. +path = [cwd] + +group = DefineGroup('Startup', src, depend = [''], CPPPATH = path) + +Return('group') diff --git a/bsp/dm365/platform/dm365.c b/bsp/dm365/platform/dm365.c new file mode 100644 index 0000000000000000000000000000000000000000..42af67138205dedc062d72e41cb2919ae0c57d11 --- /dev/null +++ b/bsp/dm365/platform/dm365.c @@ -0,0 +1,368 @@ +/* + * File : dm365.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +#include + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +static rt_uint32_t commonrate; +static rt_uint32_t div_by_four; +static rt_uint32_t div_by_six; +static rt_uint32_t armrate; +static rt_uint32_t fixedrate; +static rt_uint32_t ddrrate; +static rt_uint32_t voicerate; +static rt_uint32_t mmcsdrate; +static rt_uint32_t vpssrate, vencrate_sd, vencrate_hd; + + +/* Four Transfer Controllers on DM365 */ +static const rt_int8_t +dm365_queue_tc_mapping[][2] = { + /* {event queue no, TC no} */ + {0, 0}, + {1, 1}, + {2, 2}, + {3, 3}, + {-1, -1}, +}; + +static const rt_int8_t +dm365_queue_priority_mapping[][2] = { + /* {event queue no, Priority} */ + {0, 7}, + {1, 7}, + {2, 7}, + {3, 0}, + {-1, -1}, +}; + +static struct edma_soc_info edma_cc0_info = { + .n_channel = 64, + .n_region = 4, + .n_slot = 256, + .n_tc = 4, + .n_cc = 1, + .queue_tc_mapping = dm365_queue_tc_mapping, + .queue_priority_mapping = dm365_queue_priority_mapping, + .default_queue = EVENTQ_3, +}; + +static struct edma_soc_info *dm365_edma_info[EDMA_MAX_CC] = { + &edma_cc0_info, +}; + +static rt_list_t clocks; + +struct clk { + char name[32]; + rt_uint32_t *rate_hz; + struct clk *parent; + rt_list_t node; +}; + +static struct clk davinci_dm365_clks[] = { + { + .name = "ARMCLK", + .rate_hz = &armrate, + }, + { + .name = "UART0", + .rate_hz = &fixedrate, + }, + { + .name = "UART1", + .rate_hz = &commonrate, + }, + { + .name = "HPI", + .rate_hz = &commonrate, + }, + { + .name = "EMACCLK", + .rate_hz = &commonrate, + }, + { + .name = "I2CCLK", + .rate_hz = &fixedrate, + }, + { + .name = "McBSPCLK", + .rate_hz = &commonrate, + }, + { + .name = "MMCSDCLK0", + .rate_hz = &mmcsdrate, + }, + { + .name = "MMCSDCLK1", + .rate_hz = &mmcsdrate, + }, + { + .name = "SPICLK", + .rate_hz = &commonrate, + }, + { + .name = "gpio", + .rate_hz = &commonrate, + }, + { + .name = "AEMIFCLK", + .rate_hz = &commonrate, + }, + { + .name = "PWM0_CLK", + .rate_hz = &fixedrate, + }, + { + .name = "PWM1_CLK", + .rate_hz = &fixedrate, + }, + { + .name = "PWM2_CLK", + .rate_hz = &fixedrate, + }, + { + .name = "PWM3_CLK", + .rate_hz = &fixedrate, + }, + { + .name = "USBCLK", + .rate_hz = &fixedrate, + }, + { + .name = "VOICECODEC_CLK", + .rate_hz = &voicerate, + }, + { + .name = "RTC_CLK", + .rate_hz = &fixedrate, + }, + { + .name = "KEYSCAN_CLK", + .rate_hz = &fixedrate, + }, + { + .name = "ADCIF_CLK", + .rate_hz = &fixedrate, + }, +}; + +/* clocks cannot be de-registered no refcounting necessary */ +struct clk *clk_get(const char *id) +{ + struct clk *clk; + rt_list_t *list; + + for (list = (&clocks)->next; list != &clocks; list = list->next) + { + clk = (struct clk *)rt_list_entry(list, struct clk, node); + if (rt_strcmp(id, clk->name) == 0) + return clk; + } + + return RT_NULL; +} + +rt_uint32_t clk_get_rate(struct clk *clk) +{ + rt_uint32_t flags; + rt_uint32_t *rate; + + for (;;) { + rate = clk->rate_hz; + if (rate || !clk->parent) + break; + clk = clk->parent; + } + return *rate; +} + +void clk_register(struct clk *clk) +{ + rt_list_insert_after(&clocks, &clk->node); +} + +int davinci_register_clks(struct clk *clk_list, int num_clks) +{ + struct clk *clkp; + int i; + + for (i = 0, clkp = clk_list; i < num_clks; i++, clkp++) + { + //rt_kprintf("1:%s\n", clkp->name); + clk_register(clkp); + //rt_kprintf("2:%s\n", clkp->name); + } + + return 0; +} + +/* PLL/Reset register offsets */ +#define PLLM 0x110 +#define PREDIV 0x114 +#define PLLDIV2 0x11C +#define POSTDIV 0x128 +#define PLLDIV4 0x160 +#define PLLDIV5 0x164 +#define PLLDIV6 0x168 +#define PLLDIV7 0x16C +#define PLLDIV8 0x170 + + +int davinci_clk_init(void) +{ + struct clk *clk_list; + int num_clks; + rt_uint32_t pll0_mult, pll1_mult; + + unsigned long prediv, postdiv; + unsigned long pll_rate; + unsigned long pll_div2, pll_div4, pll_div5, + pll_div6, pll_div7, pll_div8; + + rt_list_init(&clocks); + + //davinci_psc_register(davinci_psc_base, 1); + + pll0_mult = davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLM); + pll1_mult = davinci_readl(DAVINCI_PLL_CNTRL1_BASE + PLLM); + + commonrate = ((pll0_mult + 1) * 27000000) / 6; + armrate = ((pll0_mult + 1) * 27000000) / 2; + + fixedrate = 24000000; + + /* Read PLL0 configuration */ + prediv = (davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PREDIV) & + 0x1f) + 1; + postdiv = (davinci_readl(DAVINCI_PLL_CNTRL0_BASE + POSTDIV) & + 0x1f) + 1; + + /* PLL0 dividers */ + pll_div4 = (davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLDIV4) & + 0x1f) + 1; /* EDMA, EMAC, config, common */ + pll_div5 = (davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLDIV5) & + 0x1f) + 1; /* VPSS */ + pll_div6 = (davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLDIV6) & + 0x1f) + 1; /* VENC */ + pll_div7 = (davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLDIV7) & + 0x1f) + 1; /* DDR */ + pll_div8 = (davinci_readl(DAVINCI_PLL_CNTRL0_BASE + PLLDIV8) & + 0x1f) + 1; /* MMC/SD */ + + pll_rate = ((fixedrate / prediv) * (2 * pll0_mult)) / postdiv; + + commonrate = pll_rate / pll_div4; /* 486/4 = 121.5MHz */ + vpssrate = pll_rate / pll_div5; /* 486/2 = 243MHz */ + vencrate_sd = pll_rate / pll_div6; /* 486/18 = 27MHz */ + ddrrate = pll_rate / pll_div7; /* 486/2 = 243MHz */ + mmcsdrate = pll_rate / pll_div8; /* 486/4 = 121.5MHz */ + + rt_kprintf( + "PLL0: fixedrate: %d, commonrate: %d, vpssrate: %d\n", + fixedrate, commonrate, vpssrate); + rt_kprintf( + "PLL0: vencrate_sd: %d, ddrrate: %d mmcsdrate: %d\n", + vencrate_sd, (ddrrate/2), mmcsdrate); + + /* Read PLL1 configuration */ + prediv = (davinci_readl(DAVINCI_PLL_CNTRL1_BASE + PREDIV) & + 0x1f) + 1; + postdiv = (davinci_readl(DAVINCI_PLL_CNTRL1_BASE + POSTDIV) & + 0x1f) + 1; + pll_rate = ((fixedrate / prediv) * (2 * pll1_mult)) / postdiv; + + /* PLL1 dividers */ + pll_div2 = (davinci_readl(DAVINCI_PLL_CNTRL1_BASE + PLLDIV2) & + 0x1f) + 1; /* ARM */ + pll_div4 = (davinci_readl(DAVINCI_PLL_CNTRL1_BASE + PLLDIV4) & + 0x1f) + 1; /* VOICE */ + pll_div5 = (davinci_readl(DAVINCI_PLL_CNTRL1_BASE + PLLDIV5) & + 0x1f) + 1; /* VENC */ + + armrate = pll_rate / pll_div2; /* 594/2 = 297MHz */ + voicerate = pll_rate / pll_div4; /* 594/6 = 99MHz */ + vencrate_hd = pll_rate / pll_div5; /* 594/8 = 74.25MHz */ + + rt_kprintf( + "PLL1: armrate: %d, voicerate: %d, vencrate_hd: %d\n", + armrate, voicerate, vencrate_hd); + + clk_list = davinci_dm365_clks; + num_clks = ARRAY_SIZE(davinci_dm365_clks); + + return davinci_register_clks(clk_list, num_clks); +} + +void platform_init(void) +{ + edma_init(dm365_edma_info); +} + + +/* Reset board using the watchdog timer */ +void reset_system(void) +{ + rt_uint32_t tgcr, wdtcr; + rt_uint32_t base = DAVINCI_WDOG_BASE; + + /* Disable, internal clock source */ + davinci_writel(0, base + TCR); + + /* Reset timer, set mode to 64-bit watchdog, and unreset */ + davinci_writel(0, base + TGCR); + tgcr = (TGCR_TIMMODE_64BIT_WDOG << TGCR_TIMMODE_SHIFT) | + (TGCR_UNRESET << TGCR_TIM12RS_SHIFT) | + (TGCR_UNRESET << TGCR_TIM34RS_SHIFT); + davinci_writel(tgcr, base + TGCR); + + /* Clear counter and period regs */ + davinci_writel(0, base + TIM12); + davinci_writel(0, base + TIM34); + davinci_writel(0, base + PRD12); + davinci_writel(0, base + PRD34); + + /* Enable periodic mode */ + davinci_writel(TCR_ENAMODE_PERIODIC << ENAMODE12_SHIFT, base + TCR); + + /* Put watchdog in pre-active state */ + wdtcr = (WDTCR_WDKEY_SEQ0 << WDTCR_WDKEY_SHIFT) | + (WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT); + davinci_writel(wdtcr, base + WDTCR); + + /* Put watchdog in active state */ + wdtcr = (WDTCR_WDKEY_SEQ1 << WDTCR_WDKEY_SHIFT) | + (WDTCR_WDEN_ENABLE << WDTCR_WDEN_SHIFT); + davinci_writel(wdtcr, base + WDTCR); + + /* + * Write an invalid value to the WDKEY field to trigger + * a watchdog reset. + */ + wdtcr = 0xDEADBEEF; + davinci_writel(wdtcr, base + WDTCR); +} + + diff --git a/bsp/dm365/platform/dm365_timer.h b/bsp/dm365/platform/dm365_timer.h new file mode 100644 index 0000000000000000000000000000000000000000..2dd6114c027f56d0549217ad85ade14ae7e43fb0 --- /dev/null +++ b/bsp/dm365/platform/dm365_timer.h @@ -0,0 +1,75 @@ +/* + * File : dm365_timer.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +#ifndef __ASM_ARCH_TIME_H +#define __ASM_ARCH_TIME_H + +/* Timer register offsets */ +#define PID12 0x0 +#define TIM12 0x10 +#define TIM34 0x14 +#define PRD12 0x18 +#define PRD34 0x1c +#define TCR 0x20 +#define TGCR 0x24 +#define WDTCR 0x28 +#define CMP12(n) (0x60 + ((n) << 2)) + +/* Timer register bitfields */ +#define ENAMODE12_SHIFT 6 +#define ENAMODE34_SHIFT 22 +#define TCR_ENAMODE_DISABLE 0x0 +#define TCR_ENAMODE_ONESHOT 0x1 +#define TCR_ENAMODE_PERIODIC 0x2 +#define TCR_ENAMODE_MASK 0x3 + +#define TGCR_TIMMODE_SHIFT 2 +#define TGCR_TIMMODE_64BIT_GP 0x0 +#define TGCR_TIMMODE_32BIT_UNCHAINED 0x1 +#define TGCR_TIMMODE_64BIT_WDOG 0x2 +#define TGCR_TIMMODE_32BIT_CHAINED 0x3 + +#define TGCR_TIM12RS_SHIFT 0 +#define TGCR_TIM34RS_SHIFT 1 +#define TGCR_RESET 0x0 +#define TGCR_UNRESET 0x1 +#define TGCR_RESET_MASK 0x3 + +#define WDTCR_WDEN_SHIFT 14 +#define WDTCR_WDEN_DISABLE 0x0 +#define WDTCR_WDEN_ENABLE 0x1 +#define WDTCR_WDKEY_SHIFT 16 +#define WDTCR_WDKEY_SEQ0 0xA5C6 +#define WDTCR_WDKEY_SEQ1 0xDA7E + +enum { + T0_BOT, + T0_TOP, + T1_BOT, + T1_TOP, + NUM_TIMERS +}; + +#endif /* __ASM_ARCH_TIME_H__ */ + diff --git a/bsp/dm365/platform/dm36x.h b/bsp/dm365/platform/dm36x.h new file mode 100644 index 0000000000000000000000000000000000000000..85be007c245c3ab34ceaf888761b0a477570694f --- /dev/null +++ b/bsp/dm365/platform/dm36x.h @@ -0,0 +1,252 @@ +/* + * File : dm36x.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +#ifndef __DM36X_H__ +#define __DM36X_H__ + +#ifdef __cplusplus +extern "C" { +#endif + + +#include +#include "psc.h" +#include "irqs.h" +#include "dm365_timer.h" + +/** + * @addtogroup DM36X + */ +/*@{*/ + +/* + * Base register addresses + */ +#define DAVINCI_DMA_3PCC_BASE (0x01C00000) +#define DAVINCI_DMA_3PTC0_BASE (0x01C10000) +#define DAVINCI_DMA_3PTC1_BASE (0x01C10400) +#define DAVINCI_I2C_BASE (0x01C21000) +#define DAVINCI_TIMER0_BASE (0x01C21400) +#define DAVINCI_TIMER1_BASE (0x01C21800) +#define DAVINCI_WDOG_BASE (0x01C21C00) +#define DAVINCI_PWM0_BASE (0x01C22000) +#define DAVINCI_PWM1_BASE (0x01C22400) +#define DAVINCI_PWM2_BASE (0x01C22800) +#define DAVINCI_SYSTEM_MODULE_BASE (0x01C40000) +#define DAVINCI_PLL_CNTRL0_BASE (0x01C40800) +#define DAVINCI_PLL_CNTRL1_BASE (0x01C40C00) +#define DAVINCI_PWR_SLEEP_CNTRL_BASE (0x01C41000) +#define DAVINCI_SYSTEM_DFT_BASE (0x01C42000) +#define DAVINCI_IEEE1394_BASE (0x01C60000) +#define DAVINCI_USB_OTG_BASE (0x01C64000) +#define DAVINCI_CFC_ATA_BASE (0x01C66000) +#define DAVINCI_SPI_BASE (0x01C66800) +#define DAVINCI_GPIO_BASE (0x01C67000) +#define DAVINCI_UHPI_BASE (0x01C67800) +#define DAVINCI_VPSS_REGS_BASE (0x01C70000) +#define DAVINCI_EMAC_CNTRL_REGS_BASE (0x01C80000) +#define DAVINCI_EMAC_WRAPPER_CNTRL_REGS_BASE (0x01C81000) +#define DAVINCI_EMAC_WRAPPER_RAM_BASE (0x01C82000) +#define DAVINCI_MDIO_CNTRL_REGS_BASE (0x01C84000) +#define DAVINCI_IMCOP_BASE (0x01CC0000) +#define DAVINCI_ASYNC_EMIF_CNTRL_BASE (0x01E00000) +#define DAVINCI_VLYNQ_BASE (0x01E01000) +#define DAVINCI_MCBSP_BASE (0x01E02000) +#define DAVINCI_MMC_SD_BASE (0x01E10000) +#define DAVINCI_MS_BASE (0x01E20000) +#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE (0x02000000) +#define DAVINCI_ASYNC_EMIF_DATA_CE1_BASE (0x04000000) +#define DAVINCI_ASYNC_EMIF_DATA_CE2_BASE (0x06000000) +#define DAVINCI_ASYNC_EMIF_DATA_CE3_BASE (0x08000000) +#define DAVINCI_VLYNQ_REMOTE_BASE (0x0C000000) + + +/* + * We can have multiple VLYNQ IPs in our system. + * Define 'LOW_VLYNQ_CONTROL_BASE' with the VLYNQ + * IP having lowest base address. + * Define 'HIGH_VLYNQ_CONTROL_BASE' with the VLYNQ + * IP having highest base address. + * In case of only one VLYNQ IP, define only the + * 'LOW_VLYNQ_CONTROL_BASE'. + */ +#define LOW_VLYNQ_CONTROL_BASE DAVINCI_VLYNQ_BASE + +#define DM365_EMAC_BASE (0x01D07000) +#define DM365_EMAC_CNTRL_OFFSET (0x0000) +#define DM365_EMAC_CNTRL_MOD_OFFSET (0x3000) +#define DM365_EMAC_CNTRL_RAM_OFFSET (0x1000) +#define DM365_EMAC_MDIO_OFFSET (0x4000) +#define DM365_EMAC_CNTRL_RAM_SIZE (0x2000) + + +/* + * Macro to access device power control + */ +#define DAVINCI_VDD3P3V_PWDN (DAVINCI_SYSTEM_MODULE_BASE + 0x48) +#define DAVINCI_VSCLKDIS (DAVINCI_SYSTEM_MODULE_BASE + 0x6c) + +/* + * System module registers + */ +#define PINMUX0 (DAVINCI_SYSTEM_MODULE_BASE + 0x00) +#define PINMUX1 (DAVINCI_SYSTEM_MODULE_BASE + 0x04) +#define PINMUX2 (DAVINCI_SYSTEM_MODULE_BASE + 0x08) +#define PINMUX3 (DAVINCI_SYSTEM_MODULE_BASE + 0x0c) +#define PINMUX4 (DAVINCI_SYSTEM_MODULE_BASE + 0x10) + +#define DM365_ARM_INTMUX (DAVINCI_SYSTEM_MODULE_BASE + 0x18) +#define DM365_EDMA_EVTMUX (DAVINCI_SYSTEM_MODULE_BASE + 0x1C) +#define DAVINCI_PUPDCTL1 (DAVINCI_SYSTEM_MODULE_BASE + 0x7C) + + + +#define ASYNC_EMIF_REVID 0x00 +#define ASYNC_EMIF_AWCCR 0x04 +#define ASYNC_EMIF_A1CR 0x10 +#define ASYNC_EMIF_A2CR 0x14 +#define ASYNC_EMIF_A3CR 0x18 + +/* + * Base register addresses common across DM355 and DM365 + */ +#define DM3XX_TIMER2_BASE (0x01C20800) +#define DM3XX_REALTIME_BASE (0x01C20C00) +#define DM3XX_PWM3_BASE (0x01C22C00) +#define DM3XX_SPI_BASE (0x01C66000) +#define DM3XX_SPI0_BASE DM3XX_SPI_BASE +#define DM3XX_SPI1_BASE (0x01C66800) +#define DM3XX_SPI2_BASE (0x01C67800) + + + +/* + * DM365 base register address + */ +#define DM365_DMA_3PTC2_BASE (0x01C10800) +#define DM365_DMA_3PTC3_BASE (0x01C10C00) +#define DM365_TIMER3_BASE (0x01C23800) +#define DM365_ADCIF_BASE (0x01C23C00) +#define DM365_SPI3_BASE (0x01C68000) +#define DM365_SPI4_BASE (0x01C23000) +#define DM365_RTC_BASE (0x01C69000) +#define DM365_KEYSCAN_BASE (0x01C69400) +#define DM365_UHPI_BASE (0x01C69800) +#define DM365_IMCOP_BASE (0x01CA0000) +#define DM365_MMC_SD1_BASE (0x01D00000) +#define DM365_MCBSP_BASE (0x01D02000) +#define DM365_UART1_BASE (0x01D06000) +#define DM365_EMAC_CNTRL_BASE (0x01D07000) +#define DM365_EMAC_WRAP_RAM_BASE (0x01D08000) +#define DM365_EMAC_WRAP_CNTRL_BASE (0x01D0A000) +#define DM365_EMAC_MDIO_BASE (0x01D0B000) +#define DM365_VOICE_CODEC_BASE (0x01D0C000) +#define DM365_ASYNC_EMIF_CNTRL_BASE (0x01D10000) +#define DM365_MMC_SD0_BASE (0x01D11000) +#define DM365_MS_BASE (0x01D20000) +#define DM365_KALEIDO_BASE (0x01E00000) + +#define DAVINCI_UART0_BASE (0x01C20000) + +#define PSC_MDCTL_BASE (0x01c41a00) +#define PSC_MDSTAT_BASE (0x01c41800) +#define PSC_PTCMD (0x01c41120) +#define PSC_PTSTAT (0x01c41128) + +#define DM365_EINT_ENABLE0 0x01c48018 +#define DM365_EINT_ENABLE1 0x01c4801c + +#define davinci_readb(a) (*(volatile unsigned char *)(a)) +#define davinci_readw(a) (*(volatile unsigned short *)(a)) +#define davinci_readl(a) (*(volatile unsigned int *)(a)) + +#define davinci_writeb(v,a) (*(volatile unsigned char *)(a) = (v)) +#define davinci_writew(v,a) (*(volatile unsigned short *)(a) = (v)) +#define davinci_writel(v,a) (*(volatile unsigned int *)(a) = (v)) + +#define readb(a) davinci_readb(a) +#define readw(a) davinci_readw(a) +#define readl(a) davinci_readl(a) + +#define write(v,a) davinci_writeb(v,a) +#define writew(v,a) davinci_writew(v,a) +#define writel(v,a) davinci_writel(v,a) + +/* define timer register struct*/ +typedef struct timer_regs_s { + rt_uint32_t pid12; /* 0x0 */ + rt_uint32_t emumgt_clksped; /* 0x4 */ + rt_uint32_t gpint_en; /* 0x8 */ + rt_uint32_t gpdir_dat; /* 0xC */ + rt_uint32_t tim12; /* 0x10 */ + rt_uint32_t tim34; /* 0x14 */ + rt_uint32_t prd12; /* 0x18 */ + rt_uint32_t prd34; /* 0x1C */ + rt_uint32_t tcr; /* 0x20 */ + rt_uint32_t tgcr; /* 0x24 */ + rt_uint32_t wdtcr; /* 0x28 */ + rt_uint32_t tlgc; /* 0x2C */ + rt_uint32_t tlmr; /* 0x30 */ +} timer_regs_t; + +/*****************************/ +/* CPU Mode */ +/*****************************/ +#define USERMODE 0x10 +#define FIQMODE 0x11 +#define IRQMODE 0x12 +#define SVCMODE 0x13 +#define ABORTMODE 0x17 +#define UNDEFMODE 0x1b +#define MODEMASK 0x1f +#define NOINT 0xc0 + +struct rt_hw_register +{ + rt_uint32_t cpsr; + rt_uint32_t r0; + rt_uint32_t r1; + rt_uint32_t r2; + rt_uint32_t r3; + rt_uint32_t r4; + rt_uint32_t r5; + rt_uint32_t r6; + rt_uint32_t r7; + rt_uint32_t r8; + rt_uint32_t r9; + rt_uint32_t r10; + rt_uint32_t fp; + rt_uint32_t ip; + rt_uint32_t sp; + rt_uint32_t lr; + rt_uint32_t pc; +}; + +/*@}*/ + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/bsp/dm365/platform/dma.c b/bsp/dm365/platform/dma.c new file mode 100644 index 0000000000000000000000000000000000000000..2acf572f4999b26a6506f12499d45cd654fafc53 --- /dev/null +++ b/bsp/dm365/platform/dma.c @@ -0,0 +1,1592 @@ +/* + * File : dma.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + + +#include + +/* Offsets matching "struct edmacc_param" */ +#define PARM_OPT 0x00 +#define PARM_SRC 0x04 +#define PARM_A_B_CNT 0x08 +#define PARM_DST 0x0c +#define PARM_SRC_DST_BIDX 0x10 +#define PARM_LINK_BCNTRLD 0x14 +#define PARM_SRC_DST_CIDX 0x18 +#define PARM_CCNT 0x1c + +#define PARM_SIZE 0x20 + +/* Offsets for EDMA CC global channel registers and their shadows */ +#define SH_ER 0x00 /* 64 bits */ +#define SH_ECR 0x08 /* 64 bits */ +#define SH_ESR 0x10 /* 64 bits */ +#define SH_CER 0x18 /* 64 bits */ +#define SH_EER 0x20 /* 64 bits */ +#define SH_EECR 0x28 /* 64 bits */ +#define SH_EESR 0x30 /* 64 bits */ +#define SH_SER 0x38 /* 64 bits */ +#define SH_SECR 0x40 /* 64 bits */ +#define SH_IER 0x50 /* 64 bits */ +#define SH_IECR 0x58 /* 64 bits */ +#define SH_IESR 0x60 /* 64 bits */ +#define SH_IPR 0x68 /* 64 bits */ +#define SH_ICR 0x70 /* 64 bits */ +#define SH_IEVAL 0x78 +#define SH_QER 0x80 +#define SH_QEER 0x84 +#define SH_QEECR 0x88 +#define SH_QEESR 0x8c +#define SH_QSER 0x90 +#define SH_QSECR 0x94 +#define SH_SIZE 0x200 + +/* Offsets for EDMA CC global registers */ +#define EDMA_REV 0x0000 +#define EDMA_CCCFG 0x0004 +#define EDMA_QCHMAP 0x0200 /* 8 registers */ +#define EDMA_DMAQNUM 0x0240 /* 8 registers (4 on OMAP-L1xx) */ +#define EDMA_QDMAQNUM 0x0260 +#define EDMA_QUETCMAP 0x0280 +#define EDMA_QUEPRI 0x0284 +#define EDMA_EMR 0x0300 /* 64 bits */ +#define EDMA_EMCR 0x0308 /* 64 bits */ +#define EDMA_QEMR 0x0310 +#define EDMA_QEMCR 0x0314 +#define EDMA_CCERR 0x0318 +#define EDMA_CCERRCLR 0x031c +#define EDMA_EEVAL 0x0320 +#define EDMA_DRAE 0x0340 /* 4 x 64 bits*/ +#define EDMA_QRAE 0x0380 /* 4 registers */ +#define EDMA_QUEEVTENTRY 0x0400 /* 2 x 16 registers */ +#define EDMA_QSTAT 0x0600 /* 2 registers */ +#define EDMA_QWMTHRA 0x0620 +#define EDMA_QWMTHRB 0x0624 +#define EDMA_CCSTAT 0x0640 + +#define EDMA_M 0x1000 /* global channel registers */ +#define EDMA_ECR 0x1008 +#define EDMA_ECRH 0x100C +#define EDMA_SHADOW0 0x2000 /* 4 regions shadowing global channels */ +#define EDMA_PARM 0x4000 /* 128 param entries */ + +#define PARM_OFFSET(param_no) (EDMA_PARM + ((param_no) << 5)) + +#define EDMA_DCHMAP 0x0100 /* 64 registers */ +#define CHMAP_EXIST BIT(24) + +#define EDMA_MAX_DMACH 64 +#define EDMA_MAX_PARAMENTRY 512 + +#define EDMA_CC0_BASE_REG 0x01c00000 +#define EDMA_TC0_BASE_REG 0x01c10000 +#define EDMA_TC1_BASE_REG 0x01c10400 +#define EDMA_TC2_BASE_REG 0x01c10800 +#define EDMA_TC3_BASE_REG 0x01c10c00 + +#define min_t(type, x, y) ({ \ + type __min1 = (x); \ + type __min2 = (y); \ + __min1 < __min2 ? __min1: __min2; }) + + + +/*****************************************************************************/ + +static void volatile *edmacc_regs_base[EDMA_MAX_CC]; + +static inline unsigned int edma_read(unsigned ctlr, int offset) +{ + return (unsigned int)davinci_readl(edmacc_regs_base[ctlr] + offset); +} + +static inline void edma_write(unsigned ctlr, int offset, int val) +{ + davinci_writel(val, edmacc_regs_base[ctlr] + offset); +} +static inline void edma_modify(unsigned ctlr, int offset, unsigned and, + unsigned or) +{ + unsigned val = edma_read(ctlr, offset); + val &= and; + val |= or; + edma_write(ctlr, offset, val); +} +static inline void edma_and(unsigned ctlr, int offset, unsigned and) +{ + unsigned val = edma_read(ctlr, offset); + val &= and; + edma_write(ctlr, offset, val); +} +static inline void edma_or(unsigned ctlr, int offset, unsigned or) +{ + unsigned val = edma_read(ctlr, offset); + val |= or; + edma_write(ctlr, offset, val); +} +static inline unsigned int edma_read_array(unsigned ctlr, int offset, int i) +{ + return edma_read(ctlr, offset + (i << 2)); +} +static inline void edma_write_array(unsigned ctlr, int offset, int i, + unsigned val) +{ + edma_write(ctlr, offset + (i << 2), val); +} +static inline void edma_modify_array(unsigned ctlr, int offset, int i, + unsigned and, unsigned or) +{ + edma_modify(ctlr, offset + (i << 2), and, or); +} +static inline void edma_or_array(unsigned ctlr, int offset, int i, unsigned or) +{ + edma_or(ctlr, offset + (i << 2), or); +} +static inline void edma_or_array2(unsigned ctlr, int offset, int i, int j, + unsigned or) +{ + edma_or(ctlr, offset + ((i*2 + j) << 2), or); +} +static inline void edma_write_array2(unsigned ctlr, int offset, int i, int j, + unsigned val) +{ + edma_write(ctlr, offset + ((i*2 + j) << 2), val); +} +static inline unsigned int edma_shadow0_read(unsigned ctlr, int offset) +{ + return edma_read(ctlr, EDMA_SHADOW0 + offset); +} +static inline unsigned int edma_shadow0_read_array(unsigned ctlr, int offset, + int i) +{ + return edma_read(ctlr, EDMA_SHADOW0 + offset + (i << 2)); +} +static inline void edma_shadow0_write(unsigned ctlr, int offset, unsigned val) +{ + edma_write(ctlr, EDMA_SHADOW0 + offset, val); +} +static inline void edma_shadow0_write_array(unsigned ctlr, int offset, int i, + unsigned val) +{ + edma_write(ctlr, EDMA_SHADOW0 + offset + (i << 2), val); +} +static inline unsigned int edma_parm_read(unsigned ctlr, int offset, + int param_no) +{ + return edma_read(ctlr, EDMA_PARM + offset + (param_no << 5)); +} +static inline void edma_parm_write(unsigned ctlr, int offset, int param_no, + unsigned val) +{ + edma_write(ctlr, EDMA_PARM + offset + (param_no << 5), val); +} +static inline void edma_parm_modify(unsigned ctlr, int offset, int param_no, + unsigned and, unsigned or) +{ + edma_modify(ctlr, EDMA_PARM + offset + (param_no << 5), and, or); +} +static inline void edma_parm_and(unsigned ctlr, int offset, int param_no, + unsigned and) +{ + edma_and(ctlr, EDMA_PARM + offset + (param_no << 5), and); +} +static inline void edma_parm_or(unsigned ctlr, int offset, int param_no, + unsigned or) +{ + edma_or(ctlr, EDMA_PARM + offset + (param_no << 5), or); +} +#if 0 +static inline void set_bits(int offset, int len, unsigned long *p) +{ + for (; len > 0; len--) + set_bit(offset + (len - 1), p); +} + +static inline void clear_bits(int offset, int len, unsigned long *p) +{ + for (; len > 0; len--) + clear_bit(offset + (len - 1), p); +} +#endif +/*****************************************************************************/ + +#define BIT(nr) (1UL << (nr)) +#define BITS_PER_LONG 32 +#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG)) +#define BIT_WORD(nr) ((nr) / BITS_PER_LONG) +#define BITS_PER_BYTE 8 +#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) + +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) + +#define DECLARE_BITMAP(name,bits) \ + unsigned long name[BITS_TO_LONGS(bits)] + +/** + * test_bit - Determine whether a bit is set + * @nr: bit number to test + * @addr: Address to start counting from + */ +static inline int test_bit(int nr, const volatile unsigned long *addr) +{ + return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1))); +} + +static inline void clear_bit(int nr, volatile unsigned long *addr) +{ + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + rt_base_t level; + + level = rt_hw_interrupt_disable(); + *p &= ~mask; + rt_hw_interrupt_enable(level); +} + +static inline int test_and_set_bit(int nr, volatile unsigned long *addr) +{ + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + unsigned long old; + rt_base_t level; + + level = rt_hw_interrupt_disable(); + old = *p; + *p = old | mask; + rt_hw_interrupt_enable(level); + + return (old & mask) != 0; +} + +static inline void set_bit(int nr, volatile unsigned long *addr) +{ + unsigned long mask = BIT_MASK(nr); + unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); + rt_base_t level; + + level = rt_hw_interrupt_disable(); + *p |= mask; + rt_hw_interrupt_enable(level); +} + +/* + * Little endian assembly bitops. nr = 0 -> byte 0 bit 0. + */ +extern int _find_first_zero_bit_le(const void * p, unsigned size); +extern int _find_next_zero_bit_le(const void * p, int size, int offset); +extern int _find_first_bit_le(const unsigned long *p, unsigned size); +extern int _find_next_bit_le(const unsigned long *p, int size, int offset); + +/* + * These are the little endian, atomic definitions. + */ +#define find_first_zero_bit(p,sz) _find_first_zero_bit_le(p,sz) +#define find_next_zero_bit(p,sz,off) _find_next_zero_bit_le(p,sz,off) +#define find_first_bit(p,sz) _find_first_bit_le(p,sz) +#define find_next_bit(p,sz,off) _find_next_bit_le(p,sz,off) + + + +/* actual number of DMA channels and slots on this silicon */ +struct edma { + /* how many dma resources of each type */ + unsigned num_channels; + unsigned num_region; + unsigned num_slots; + unsigned num_tc; + unsigned num_cc; + enum dma_event_q default_queue; + + /* list of channels with no even trigger; terminated by "-1" */ + const rt_int8_t *noevent; + + /* The edma_inuse bit for each PaRAM slot is clear unless the + * channel is in use ... by ARM or DSP, for QDMA, or whatever. + */ + DECLARE_BITMAP(edma_inuse, EDMA_MAX_PARAMENTRY); + + /* The edma_unused bit for each channel is clear unless + * it is not being used on this platform. It uses a bit + * of SOC-specific initialization code. + */ + DECLARE_BITMAP(edma_unused, EDMA_MAX_DMACH); + + unsigned irq_res_start; + unsigned irq_res_end; + + struct dma_interrupt_data { + void (*callback)(unsigned channel, unsigned short ch_status, + void *data); + void *data; + } intr_data[EDMA_MAX_DMACH]; +}; + +static struct edma *edma_cc[EDMA_MAX_CC]; +static int arch_num_cc; + +/* dummy param set used to (re)initialize parameter RAM slots */ +static const struct edmacc_param dummy_paramset = { + .link_bcntrld = 0xffff, + .ccnt = 1, +}; + +/*****************************************************************************/ + +static void map_dmach_queue(unsigned ctlr, unsigned ch_no, + enum dma_event_q queue_no) +{ + int bit = (ch_no & 0x7) * 4; + + /* default to low priority queue */ + if (queue_no == EVENTQ_DEFAULT) + queue_no = edma_cc[ctlr]->default_queue; + + queue_no &= 7; + edma_modify_array(ctlr, EDMA_DMAQNUM, (ch_no >> 3), + ~(0x7 << bit), queue_no << bit); +} + +static void map_queue_tc(unsigned ctlr, int queue_no, int tc_no) +{ + int bit = queue_no * 4; + edma_modify(ctlr, EDMA_QUETCMAP, ~(0x7 << bit), ((tc_no & 0x7) << bit)); +} + +static void assign_priority_to_queue(unsigned ctlr, int queue_no, + int priority) +{ + int bit = queue_no * 4; + edma_modify(ctlr, EDMA_QUEPRI, ~(0x7 << bit), + ((priority & 0x7) << bit)); +} + +/** + * map_dmach_param - Maps channel number to param entry number + * + * This maps the dma channel number to param entry numberter. In + * other words using the DMA channel mapping registers a param entry + * can be mapped to any channel + * + * Callers are responsible for ensuring the channel mapping logic is + * included in that particular EDMA variant (Eg : dm646x) + * + */ +static void map_dmach_param(unsigned ctlr) +{ + int i; + for (i = 0; i < EDMA_MAX_DMACH; i++) + edma_write_array(ctlr, EDMA_DCHMAP , i , (i << 5)); +} + +static inline void +setup_dma_interrupt(unsigned lch, + void (*callback)(unsigned channel, rt_uint16_t ch_status, void *data), + void *data) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(lch); + lch = EDMA_CHAN_SLOT(lch); + + if (!callback) + edma_shadow0_write_array(ctlr, SH_IECR, lch >> 5, + BIT(lch & 0x1f)); + + edma_cc[ctlr]->intr_data[lch].callback = callback; + edma_cc[ctlr]->intr_data[lch].data = data; + + if (callback) { + edma_shadow0_write_array(ctlr, SH_ICR, lch >> 5, + BIT(lch & 0x1f)); + edma_shadow0_write_array(ctlr, SH_IESR, lch >> 5, + BIT(lch & 0x1f)); + } +} + +static int irq2ctlr(int irq) +{ + if (irq >= edma_cc[0]->irq_res_start && irq <= edma_cc[0]->irq_res_end) + return 0; + else if (irq >= edma_cc[1]->irq_res_start && + irq <= edma_cc[1]->irq_res_end) + return 1; + + return -1; +} + +/****************************************************************************** + * + * DMA interrupt handler + * + *****************************************************************************/ +static void dma_irq_handler(int irq, void *data) +{ + int i; + int ctlr; + unsigned int cnt = 0; + + ctlr = irq2ctlr(irq); + if (ctlr < 0) + return ; + + edma_dbg("dma_irq_handler\n"); + + if ((edma_shadow0_read_array(ctlr, SH_IPR, 0) == 0) && + (edma_shadow0_read_array(ctlr, SH_IPR, 1) == 0)) + return ; + + while (1) { + int j; + if (edma_shadow0_read_array(ctlr, SH_IPR, 0) & + edma_shadow0_read_array(ctlr, SH_IER, 0)) + j = 0; + else if (edma_shadow0_read_array(ctlr, SH_IPR, 1) & + edma_shadow0_read_array(ctlr, SH_IER, 1)) + j = 1; + else + break; + edma_dbg("IPR%d %08x\n", j, + edma_shadow0_read_array(ctlr, SH_IPR, j)); + for (i = 0; i < 32; i++) { + int k = (j << 5) + i; + if ((edma_shadow0_read_array(ctlr, SH_IPR, j) & BIT(i)) + && (edma_shadow0_read_array(ctlr, + SH_IER, j) & BIT(i))) { + /* Clear the corresponding IPR bits */ + edma_shadow0_write_array(ctlr, SH_ICR, j, + BIT(i)); + if (edma_cc[ctlr]->intr_data[k].callback) + edma_cc[ctlr]->intr_data[k].callback( + k, DMA_COMPLETE, + edma_cc[ctlr]->intr_data[k]. + data); + } + } + cnt++; + if (cnt > 10) + break; + } + edma_shadow0_write(ctlr, SH_IEVAL, 1); + return ; +} + +/****************************************************************************** + * + * DMA error interrupt handler + * + *****************************************************************************/ +static void dma_ccerr_handler(int irq, void *data) +{ + int i; + int ctlr; + unsigned int cnt = 0; + + ctlr = irq2ctlr(irq); + if (ctlr < 0) + return ; + + edma_dbg("dma_ccerr_handler\n"); + + if ((edma_read_array(ctlr, EDMA_EMR, 0) == 0) && + (edma_read_array(ctlr, EDMA_EMR, 1) == 0) && + (edma_read(ctlr, EDMA_QEMR) == 0) && + (edma_read(ctlr, EDMA_CCERR) == 0)) + return ; + + while (1) { + int j = -1; + if (edma_read_array(ctlr, EDMA_EMR, 0)) + j = 0; + else if (edma_read_array(ctlr, EDMA_EMR, 1)) + j = 1; + if (j >= 0) { + edma_dbg("EMR%d %08x\n", j, + edma_read_array(ctlr, EDMA_EMR, j)); + for (i = 0; i < 32; i++) { + int k = (j << 5) + i; + if (edma_read_array(ctlr, EDMA_EMR, j) & + BIT(i)) { + /* Clear the corresponding EMR bits */ + edma_write_array(ctlr, EDMA_EMCR, j, + BIT(i)); + /* Clear any SER */ + edma_shadow0_write_array(ctlr, SH_SECR, + j, BIT(i)); + if (edma_cc[ctlr]->intr_data[k]. + callback) { + edma_cc[ctlr]->intr_data[k]. + callback(k, + DMA_CC_ERROR, + edma_cc[ctlr]->intr_data + [k].data); + } + } + } + } else if (edma_read(ctlr, EDMA_QEMR)) { + edma_dbg("QEMR %02x\n", + edma_read(ctlr, EDMA_QEMR)); + for (i = 0; i < 8; i++) { + if (edma_read(ctlr, EDMA_QEMR) & BIT(i)) { + /* Clear the corresponding IPR bits */ + edma_write(ctlr, EDMA_QEMCR, BIT(i)); + edma_shadow0_write(ctlr, SH_QSECR, + BIT(i)); + + /* NOTE: not reported!! */ + } + } + } else if (edma_read(ctlr, EDMA_CCERR)) { + edma_dbg("CCERR %08x\n", + edma_read(ctlr, EDMA_CCERR)); + /* FIXME: CCERR.BIT(16) ignored! much better + * to just write CCERRCLR with CCERR value... + */ + for (i = 0; i < 8; i++) { + if (edma_read(ctlr, EDMA_CCERR) & BIT(i)) { + /* Clear the corresponding IPR bits */ + edma_write(ctlr, EDMA_CCERRCLR, BIT(i)); + + /* NOTE: not reported!! */ + } + } + } + if ((edma_read_array(ctlr, EDMA_EMR, 0) == 0) && + (edma_read_array(ctlr, EDMA_EMR, 1) == 0) && + (edma_read(ctlr, EDMA_QEMR) == 0) && + (edma_read(ctlr, EDMA_CCERR) == 0)) + break; + cnt++; + if (cnt > 10) + break; + } + edma_write(ctlr, EDMA_EEVAL, 1); + return ; +} + +/****************************************************************************** + * + * Transfer controller error interrupt handlers + * + *****************************************************************************/ + +#define tc_errs_handled RT_FALSE/* disabled as long as they're NOPs */ + +static void dma_tc0err_handler(int irq, void *data) +{ + edma_dbg("dma_tc0err_handler\n"); + return ; +} + +static void dma_tc1err_handler(int irq, void *data) +{ + edma_dbg("dma_tc1err_handler\n"); + return ; +} + +static int reserve_contiguous_slots(int ctlr, unsigned int id, + unsigned int num_slots, + unsigned int start_slot) +{ + int i, j; + unsigned int count = num_slots; + int stop_slot = start_slot; + DECLARE_BITMAP(tmp_inuse, EDMA_MAX_PARAMENTRY); + + for (i = start_slot; i < edma_cc[ctlr]->num_slots; ++i) { + j = EDMA_CHAN_SLOT(i); + if (!test_and_set_bit(j, edma_cc[ctlr]->edma_inuse)) { + /* Record our current beginning slot */ + if (count == num_slots) + stop_slot = i; + + count--; + set_bit(j, tmp_inuse); + + if (count == 0) + break; + } else { + clear_bit(j, tmp_inuse); + + if (id == EDMA_CONT_PARAMS_FIXED_EXACT) { + stop_slot = i; + break; + } else { + count = num_slots; + } + } + } + + /* + * We have to clear any bits that we set + * if we run out parameter RAM slots, i.e we do find a set + * of contiguous parameter RAM slots but do not find the exact number + * requested as we may reach the total number of parameter RAM slots + */ + if (i == edma_cc[ctlr]->num_slots) + stop_slot = i; + + for (j = start_slot; j < stop_slot; j++) + if (test_bit(j, tmp_inuse)) + clear_bit(j, edma_cc[ctlr]->edma_inuse); + + if (count) + return -RT_EBUSY; + + for (j = i - num_slots + 1; j <= i; ++j) + rt_memcpy((void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(j)), + &dummy_paramset, PARM_SIZE); + + return EDMA_CTLR_CHAN(ctlr, i - num_slots + 1); +} + +#if 0 +static int prepare_unused_channel_list(struct device *dev, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + int i, ctlr; + + for (i = 0; i < pdev->num_resources; i++) { + if ((pdev->resource[i].flags & IORESOURCE_DMA) && + (int)pdev->resource[i].start >= 0) { + ctlr = EDMA_CTLR(pdev->resource[i].start); + clear_bit(EDMA_CHAN_SLOT(pdev->resource[i].start), + edma_cc[ctlr]->edma_unused); + } + } + + return 0; +} +#endif + +/*-----------------------------------------------------------------------*/ + +static rt_bool_t unused_chan_list_done; + +/* Resource alloc/free: dma channels, parameter RAM slots */ + +/** + * edma_alloc_channel - allocate DMA channel and paired parameter RAM + * @channel: specific channel to allocate; negative for "any unmapped channel" + * @callback: optional; to be issued on DMA completion or errors + * @data: passed to callback + * @eventq_no: an EVENTQ_* constant, used to choose which Transfer + * Controller (TC) executes requests using this channel. Use + * EVENTQ_DEFAULT unless you really need a high priority queue. + * + * This allocates a DMA channel and its associated parameter RAM slot. + * The parameter RAM is initialized to hold a dummy transfer. + * + * Normal use is to pass a specific channel number as @channel, to make + * use of hardware events mapped to that channel. When the channel will + * be used only for software triggering or event chaining, channels not + * mapped to hardware events (or mapped to unused events) are preferable. + * + * DMA transfers start from a channel using edma_start(), or by + * chaining. When the transfer described in that channel's parameter RAM + * slot completes, that slot's data may be reloaded through a link. + * + * DMA errors are only reported to the @callback associated with the + * channel driving that transfer, but transfer completion callbacks can + * be sent to another channel under control of the TCC field in + * the option word of the transfer's parameter RAM set. Drivers must not + * use DMA transfer completion callbacks for channels they did not allocate. + * (The same applies to TCC codes used in transfer chaining.) + * + * Returns the number of the channel, else negative errno. + */ +int edma_alloc_channel(int channel, + void (*callback)(unsigned channel, rt_uint16_t ch_status, void *data), + void *data, + enum dma_event_q eventq_no) +{ + unsigned i, done = 0, ctlr = 0; + int ret = 0; +#if 0 + if (!unused_chan_list_done) { + /* + * Scan all the platform devices to find out the EDMA channels + * used and clear them in the unused list, making the rest + * available for ARM usage. + */ + ret = bus_for_each_dev(&platform_bus_type, NULL, NULL, + prepare_unused_channel_list); + if (ret < 0) + return ret; + + unused_chan_list_done = true; + } +#endif + + if (channel >= 0) { + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + clear_bit(channel, edma_cc[ctlr]->edma_unused); + } + + if (channel < 0) { + for (i = 0; i < arch_num_cc; i++) { + channel = 0; + for (;;) { + channel = find_next_bit(edma_cc[i]->edma_unused, + edma_cc[i]->num_channels, + channel); + if (channel == edma_cc[i]->num_channels) + break; + if (!test_and_set_bit(channel, + edma_cc[i]->edma_inuse)) { + done = 1; + ctlr = i; + break; + } + channel++; + } + if (done) + break; + } + if (!done) + return -RT_ENOMEM; + } else if (channel >= edma_cc[ctlr]->num_channels) { + return -RT_ERROR; + } else if (test_and_set_bit(channel, edma_cc[ctlr]->edma_inuse)) { + return -RT_EBUSY; + } + + /* ensure access through shadow region 0 */ + edma_or_array2(ctlr, EDMA_DRAE, 0, channel >> 5, BIT(channel & 0x1f)); + + /* ensure no events are pending */ + edma_stop(EDMA_CTLR_CHAN(ctlr, channel)); + rt_memcpy((void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(channel)), + &dummy_paramset, PARM_SIZE); + + if (callback) + setup_dma_interrupt(EDMA_CTLR_CHAN(ctlr, channel), + callback, data); + + map_dmach_queue(ctlr, channel, eventq_no); + + return EDMA_CTLR_CHAN(ctlr, channel); +} + + +/** + * edma_free_channel - deallocate DMA channel + * @channel: dma channel returned from edma_alloc_channel() + * + * This deallocates the DMA channel and associated parameter RAM slot + * allocated by edma_alloc_channel(). + * + * Callers are responsible for ensuring the channel is inactive, and + * will not be reactivated by linking, chaining, or software calls to + * edma_start(). + */ +void edma_free_channel(unsigned channel) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel >= edma_cc[ctlr]->num_channels) + return; + + setup_dma_interrupt(channel, RT_NULL, RT_NULL); + /* REVISIT should probably take out of shadow region 0 */ + + rt_memcpy((void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(channel)), + &dummy_paramset, PARM_SIZE); + clear_bit(channel, edma_cc[ctlr]->edma_inuse); +} + + +/** + * edma_alloc_slot - allocate DMA parameter RAM + * @slot: specific slot to allocate; negative for "any unused slot" + * + * This allocates a parameter RAM slot, initializing it to hold a + * dummy transfer. Slots allocated using this routine have not been + * mapped to a hardware DMA channel, and will normally be used by + * linking to them from a slot associated with a DMA channel. + * + * Normal use is to pass EDMA_SLOT_ANY as the @slot, but specific + * slots may be allocated on behalf of DSP firmware. + * + * Returns the number of the slot, else negative errno. + */ +int edma_alloc_slot(unsigned ctlr, int slot) +{ + if (slot >= 0) + slot = EDMA_CHAN_SLOT(slot); + + if (slot < 0) { + slot = edma_cc[ctlr]->num_channels; + for (;;) { + slot = find_next_zero_bit(edma_cc[ctlr]->edma_inuse, + edma_cc[ctlr]->num_slots, slot); + if (slot == edma_cc[ctlr]->num_slots) + return -RT_ENOMEM; + if (!test_and_set_bit(slot, edma_cc[ctlr]->edma_inuse)) + break; + } + } else if (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots) { + return -RT_ERROR; + } else if (test_and_set_bit(slot, edma_cc[ctlr]->edma_inuse)) { + return -RT_EBUSY; + } + + rt_memcpy((void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(slot)), + &dummy_paramset, PARM_SIZE); + + return EDMA_CTLR_CHAN(ctlr, slot); +} + + +/** + * edma_free_slot - deallocate DMA parameter RAM + * @slot: parameter RAM slot returned from edma_alloc_slot() + * + * This deallocates the parameter RAM slot allocated by edma_alloc_slot(). + * Callers are responsible for ensuring the slot is inactive, and will + * not be activated. + */ +void edma_free_slot(unsigned slot) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots) + return; + + rt_memcpy((void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(slot)), + &dummy_paramset, PARM_SIZE); + clear_bit(slot, edma_cc[ctlr]->edma_inuse); +} + + + +/** + * edma_alloc_cont_slots- alloc contiguous parameter RAM slots + * The API will return the starting point of a set of + * contiguous parameter RAM slots that have been requested + * + * @id: can only be EDMA_CONT_PARAMS_ANY or EDMA_CONT_PARAMS_FIXED_EXACT + * or EDMA_CONT_PARAMS_FIXED_NOT_EXACT + * @count: number of contiguous Paramter RAM slots + * @slot - the start value of Parameter RAM slot that should be passed if id + * is EDMA_CONT_PARAMS_FIXED_EXACT or EDMA_CONT_PARAMS_FIXED_NOT_EXACT + * + * If id is EDMA_CONT_PARAMS_ANY then the API starts looking for a set of + * contiguous Parameter RAM slots from parameter RAM 64 in the case of + * DaVinci SOCs and 32 in the case of DA8xx SOCs. + * + * If id is EDMA_CONT_PARAMS_FIXED_EXACT then the API starts looking for a + * set of contiguous parameter RAM slots from the "slot" that is passed as an + * argument to the API. + * + * If id is EDMA_CONT_PARAMS_FIXED_NOT_EXACT then the API initially tries + * starts looking for a set of contiguous parameter RAMs from the "slot" + * that is passed as an argument to the API. On failure the API will try to + * find a set of contiguous Parameter RAM slots from the remaining Parameter + * RAM slots + */ +int edma_alloc_cont_slots(unsigned ctlr, unsigned int id, int slot, int count) +{ + /* + * The start slot requested should be greater than + * the number of channels and lesser than the total number + * of slots + */ + if ((id != EDMA_CONT_PARAMS_ANY) && + (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots)) + return -RT_ERROR; + + /* + * The number of parameter RAM slots requested cannot be less than 1 + * and cannot be more than the number of slots minus the number of + * channels + */ + if (count < 1 || count > + (edma_cc[ctlr]->num_slots - edma_cc[ctlr]->num_channels)) + return -RT_ERROR; + + switch (id) { + case EDMA_CONT_PARAMS_ANY: + return reserve_contiguous_slots(ctlr, id, count, + edma_cc[ctlr]->num_channels); + case EDMA_CONT_PARAMS_FIXED_EXACT: + case EDMA_CONT_PARAMS_FIXED_NOT_EXACT: + return reserve_contiguous_slots(ctlr, id, count, slot); + default: + return -RT_ERROR; + } + +} + + +/** + * edma_free_cont_slots - deallocate DMA parameter RAM slots + * @slot: first parameter RAM of a set of parameter RAM slots to be freed + * @count: the number of contiguous parameter RAM slots to be freed + * + * This deallocates the parameter RAM slots allocated by + * edma_alloc_cont_slots. + * Callers/applications need to keep track of sets of contiguous + * parameter RAM slots that have been allocated using the edma_alloc_cont_slots + * API. + * Callers are responsible for ensuring the slots are inactive, and will + * not be activated. + */ +int edma_free_cont_slots(unsigned slot, int count) +{ + unsigned ctlr, slot_to_free; + int i; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_cc[ctlr]->num_channels || + slot >= edma_cc[ctlr]->num_slots || + count < 1) + return -RT_ERROR; + + for (i = slot; i < slot + count; ++i) { + ctlr = EDMA_CTLR(i); + slot_to_free = EDMA_CHAN_SLOT(i); + + rt_memcpy((void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(slot_to_free)), + &dummy_paramset, PARM_SIZE); + clear_bit(slot_to_free, edma_cc[ctlr]->edma_inuse); + } + + return 0; +} + + +/*-----------------------------------------------------------------------*/ + +/* Parameter RAM operations (i) -- read/write partial slots */ + +/** + * edma_set_src - set initial DMA source address in parameter RAM slot + * @slot: parameter RAM slot being configured + * @src_port: physical address of source (memory, controller FIFO, etc) + * @addressMode: INCR, except in very rare cases + * @fifoWidth: ignored unless @addressMode is FIFO, else specifies the + * width to use when addressing the fifo (e.g. W8BIT, W32BIT) + * + * Note that the source address is modified during the DMA transfer + * according to edma_set_src_index(). + */ +void edma_set_src(unsigned slot, rt_uint32_t src_port, + enum address_mode mode, enum fifo_width width) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_cc[ctlr]->num_slots) { + unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot); + + if (mode) { + /* set SAM and program FWID */ + i = (i & ~(EDMA_FWID)) | (SAM | ((width & 0x7) << 8)); + } else { + /* clear SAM */ + i &= ~SAM; + } + edma_parm_write(ctlr, PARM_OPT, slot, i); + + /* set the source port address + in source register of param structure */ + edma_parm_write(ctlr, PARM_SRC, slot, src_port); + } +} + + +/** + * edma_set_dest - set initial DMA destination address in parameter RAM slot + * @slot: parameter RAM slot being configured + * @dest_port: physical address of destination (memory, controller FIFO, etc) + * @addressMode: INCR, except in very rare cases + * @fifoWidth: ignored unless @addressMode is FIFO, else specifies the + * width to use when addressing the fifo (e.g. W8BIT, W32BIT) + * + * Note that the destination address is modified during the DMA transfer + * according to edma_set_dest_index(). + */ +void edma_set_dest(unsigned slot, rt_uint32_t dest_port, + enum address_mode mode, enum fifo_width width) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_cc[ctlr]->num_slots) { + unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot); + + if (mode) { + /* set DAM and program FWID */ + i = (i & ~(EDMA_FWID)) | (DAM | ((width & 0x7) << 8)); + } else { + /* clear DAM */ + i &= ~DAM; + } + edma_parm_write(ctlr, PARM_OPT, slot, i); + /* set the destination port address + in dest register of param structure */ + edma_parm_write(ctlr, PARM_DST, slot, dest_port); + } +} + + +/** + * edma_get_position - returns the current transfer points + * @slot: parameter RAM slot being examined + * @src: pointer to source port position + * @dst: pointer to destination port position + * + * Returns current source and destination addresses for a particular + * parameter RAM slot. Its channel should not be active when this is called. + */ +void edma_get_position(unsigned slot, rt_uint32_t *src, rt_uint32_t *dst) +{ + struct edmacc_param temp; + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + edma_read_slot(EDMA_CTLR_CHAN(ctlr, slot), &temp); + if (src != RT_NULL) + *src = temp.src; + if (dst != RT_NULL) + *dst = temp.dst; +} + + +/** + * edma_set_src_index - configure DMA source address indexing + * @slot: parameter RAM slot being configured + * @src_bidx: byte offset between source arrays in a frame + * @src_cidx: byte offset between source frames in a block + * + * Offsets are specified to support either contiguous or discontiguous + * memory transfers, or repeated access to a hardware register, as needed. + * When accessing hardware registers, both offsets are normally zero. + */ +void edma_set_src_index(unsigned slot, rt_int16_t src_bidx, rt_int16_t src_cidx) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_cc[ctlr]->num_slots) { + edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot, + 0xffff0000, src_bidx); + edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot, + 0xffff0000, src_cidx); + } +} + + +/** + * edma_set_dest_index - configure DMA destination address indexing + * @slot: parameter RAM slot being configured + * @dest_bidx: byte offset between destination arrays in a frame + * @dest_cidx: byte offset between destination frames in a block + * + * Offsets are specified to support either contiguous or discontiguous + * memory transfers, or repeated access to a hardware register, as needed. + * When accessing hardware registers, both offsets are normally zero. + */ +void edma_set_dest_index(unsigned slot, rt_int16_t dest_bidx, rt_int16_t dest_cidx) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_cc[ctlr]->num_slots) { + edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot, + 0x0000ffff, dest_bidx << 16); + edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot, + 0x0000ffff, dest_cidx << 16); + } +} + + +/** + * edma_set_transfer_params - configure DMA transfer parameters + * @slot: parameter RAM slot being configured + * @acnt: how many bytes per array (at least one) + * @bcnt: how many arrays per frame (at least one) + * @ccnt: how many frames per block (at least one) + * @bcnt_rld: used only for A-Synchronized transfers; this specifies + * the value to reload into bcnt when it decrements to zero + * @sync_mode: ASYNC or ABSYNC + * + * See the EDMA3 documentation to understand how to configure and link + * transfers using the fields in PaRAM slots. If you are not doing it + * all at once with edma_write_slot(), you will use this routine + * plus two calls each for source and destination, setting the initial + * address and saying how to index that address. + * + * An example of an A-Synchronized transfer is a serial link using a + * single word shift register. In that case, @acnt would be equal to + * that word size; the serial controller issues a DMA synchronization + * event to transfer each word, and memory access by the DMA transfer + * controller will be word-at-a-time. + * + * An example of an AB-Synchronized transfer is a device using a FIFO. + * In that case, @acnt equals the FIFO width and @bcnt equals its depth. + * The controller with the FIFO issues DMA synchronization events when + * the FIFO threshold is reached, and the DMA transfer controller will + * transfer one frame to (or from) the FIFO. It will probably use + * efficient burst modes to access memory. + */ +void edma_set_transfer_params(unsigned slot, + rt_uint16_t acnt, rt_uint16_t bcnt, rt_uint16_t ccnt, + rt_uint16_t bcnt_rld, enum sync_dimension sync_mode) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot < edma_cc[ctlr]->num_slots) { + edma_parm_modify(ctlr, PARM_LINK_BCNTRLD, slot, + 0x0000ffff, bcnt_rld << 16); + if (sync_mode == ASYNC) + edma_parm_and(ctlr, PARM_OPT, slot, ~SYNCDIM); + else + edma_parm_or(ctlr, PARM_OPT, slot, SYNCDIM); + /* Set the acount, bcount, ccount registers */ + edma_parm_write(ctlr, PARM_A_B_CNT, slot, (bcnt << 16) | acnt); + edma_parm_write(ctlr, PARM_CCNT, slot, ccnt); + } +} + + +/** + * edma_link - link one parameter RAM slot to another + * @from: parameter RAM slot originating the link + * @to: parameter RAM slot which is the link target + * + * The originating slot should not be part of any active DMA transfer. + */ +void edma_link(unsigned from, unsigned to) +{ + unsigned ctlr_from, ctlr_to; + + ctlr_from = EDMA_CTLR(from); + from = EDMA_CHAN_SLOT(from); + ctlr_to = EDMA_CTLR(to); + to = EDMA_CHAN_SLOT(to); + + if (from >= edma_cc[ctlr_from]->num_slots) + return; + if (to >= edma_cc[ctlr_to]->num_slots) + return; + edma_parm_modify(ctlr_from, PARM_LINK_BCNTRLD, from, 0xffff0000, + PARM_OFFSET(to)); +} + + +/** + * edma_unlink - cut link from one parameter RAM slot + * @from: parameter RAM slot originating the link + * + * The originating slot should not be part of any active DMA transfer. + * Its link is set to 0xffff. + */ +void edma_unlink(unsigned from) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(from); + from = EDMA_CHAN_SLOT(from); + + if (from >= edma_cc[ctlr]->num_slots) + return; + edma_parm_or(ctlr, PARM_LINK_BCNTRLD, from, 0xffff); +} + + +/*-----------------------------------------------------------------------*/ + +/* Parameter RAM operations (ii) -- read/write whole parameter sets */ + +/** + * edma_write_slot - write parameter RAM data for slot + * @slot: number of parameter RAM slot being modified + * @param: data to be written into parameter RAM slot + * + * Use this to assign all parameters of a transfer at once. This + * allows more efficient setup of transfers than issuing multiple + * calls to set up those parameters in small pieces, and provides + * complete control over all transfer options. + */ +void edma_write_slot(unsigned slot, const struct edmacc_param *param) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot >= edma_cc[ctlr]->num_slots) + return; + rt_memcpy((void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(slot)), param, + PARM_SIZE); +} + + +/** + * edma_read_slot - read parameter RAM data from slot + * @slot: number of parameter RAM slot being copied + * @param: where to store copy of parameter RAM data + * + * Use this to read data from a parameter RAM slot, perhaps to + * save them as a template for later reuse. + */ +void edma_read_slot(unsigned slot, struct edmacc_param *param) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(slot); + slot = EDMA_CHAN_SLOT(slot); + + if (slot >= edma_cc[ctlr]->num_slots) + return; + rt_memcpy(param, (void *)(edmacc_regs_base[ctlr] + PARM_OFFSET(slot)), + PARM_SIZE); +} + + +/*-----------------------------------------------------------------------*/ + +/* Various EDMA channel control operations */ + +/** + * edma_pause - pause dma on a channel + * @channel: on which edma_start() has been called + * + * This temporarily disables EDMA hardware events on the specified channel, + * preventing them from triggering new transfers on its behalf + */ +void edma_pause(unsigned channel) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_cc[ctlr]->num_channels) { + unsigned int mask = BIT(channel & 0x1f); + + edma_shadow0_write_array(ctlr, SH_EECR, channel >> 5, mask); + } +} + + +/** + * edma_resume - resumes dma on a paused channel + * @channel: on which edma_pause() has been called + * + * This re-enables EDMA hardware events on the specified channel. + */ +void edma_resume(unsigned channel) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_cc[ctlr]->num_channels) { + unsigned int mask = BIT(channel & 0x1f); + + edma_shadow0_write_array(ctlr, SH_EESR, channel >> 5, mask); + } +} + + +/** + * edma_start - start dma on a channel + * @channel: channel being activated + * + * Channels with event associations will be triggered by their hardware + * events, and channels without such associations will be triggered by + * software. (At this writing there is no interface for using software + * triggers except with channels that don't support hardware triggers.) + * + * Returns zero on success, else negative errno. + */ +int edma_start(unsigned channel) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_cc[ctlr]->num_channels) { + int j = channel >> 5; + unsigned int mask = BIT(channel & 0x1f); + + /* EDMA channels without event association */ + if (test_bit(channel, edma_cc[ctlr]->edma_unused)) { + edma_dbg("EDMA: ESR%d %08x\n", j, + edma_shadow0_read_array(ctlr, SH_ESR, j)); + edma_shadow0_write_array(ctlr, SH_ESR, j, mask); + return 0; + } + + /* EDMA channel with event association */ + edma_dbg("EDMA: ER%d %08x\n", j, + edma_shadow0_read_array(ctlr, SH_ER, j)); + /* Clear any pending event or error */ + edma_write_array(ctlr, EDMA_ECR, j, mask); + edma_write_array(ctlr, EDMA_EMCR, j, mask); + /* Clear any SER */ + edma_shadow0_write_array(ctlr, SH_SECR, j, mask); + edma_shadow0_write_array(ctlr, SH_EESR, j, mask); + edma_dbg("EDMA: EER%d %08x\n", j, + edma_shadow0_read_array(ctlr, SH_EER, j)); + return 0; + } + + return -RT_ERROR; +} + + +/** + * edma_stop - stops dma on the channel passed + * @channel: channel being deactivated + * + * When @lch is a channel, any active transfer is paused and + * all pending hardware events are cleared. The current transfer + * may not be resumed, and the channel's Parameter RAM should be + * reinitialized before being reused. + */ +void edma_stop(unsigned channel) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_cc[ctlr]->num_channels) { + int j = channel >> 5; + unsigned int mask = BIT(channel & 0x1f); + + edma_shadow0_write_array(ctlr, SH_EECR, j, mask); + edma_shadow0_write_array(ctlr, SH_ECR, j, mask); + edma_shadow0_write_array(ctlr, SH_SECR, j, mask); + edma_write_array(ctlr, EDMA_EMCR, j, mask); + + edma_dbg("EDMA: EER%d %08x\n", j, + edma_shadow0_read_array(ctlr, SH_EER, j)); + + /* REVISIT: consider guarding against inappropriate event + * chaining by overwriting with dummy_paramset. + */ + } +} + + +/****************************************************************************** + * + * It cleans ParamEntry qand bring back EDMA to initial state if media has + * been removed before EDMA has finished.It is usedful for removable media. + * Arguments: + * ch_no - channel no + * + * Return: zero on success, or corresponding error no on failure + * + * FIXME this should not be needed ... edma_stop() should suffice. + * + *****************************************************************************/ + +void edma_clean_channel(unsigned channel) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel < edma_cc[ctlr]->num_channels) { + int j = (channel >> 5); + unsigned int mask = BIT(channel & 0x1f); + + edma_dbg("EDMA: EMR%d %08x\n", j, + edma_read_array(ctlr, EDMA_EMR, j)); + edma_shadow0_write_array(ctlr, SH_ECR, j, mask); + /* Clear the corresponding EMR bits */ + edma_write_array(ctlr, EDMA_EMCR, j, mask); + /* Clear any SER */ + edma_shadow0_write_array(ctlr, SH_SECR, j, mask); + edma_write(ctlr, EDMA_CCERRCLR, BIT(16) | BIT(1) | BIT(0)); + } +} + + +/* + * edma_clear_event - clear an outstanding event on the DMA channel + * Arguments: + * channel - channel number + */ +void edma_clear_event(unsigned channel) +{ + unsigned ctlr; + + ctlr = EDMA_CTLR(channel); + channel = EDMA_CHAN_SLOT(channel); + + if (channel >= edma_cc[ctlr]->num_channels) + return; + if (channel < 32) + edma_write(ctlr, EDMA_ECR, BIT(channel)); + else + edma_write(ctlr, EDMA_ECRH, BIT(channel - 32)); +} + + +/*-----------------------------------------------------------------------*/ + +int edma_init(struct edma_soc_info **info) +{ + //struct edma_soc_info **info = pdev->dev.platform_data; + const rt_int8_t (*queue_priority_mapping)[2]; + const rt_int8_t (*queue_tc_mapping)[2]; + int i, j, off, ln, found = 0; + int status = -1; + const rt_int16_t (*rsv_chans)[2]; + const rt_int16_t (*rsv_slots)[2]; + int irq[EDMA_MAX_CC] = {0, 0}; + int err_irq[EDMA_MAX_CC] = {0, 0}; + + RT_ASSERT(info != RT_NULL); + + psc_change_state(DAVINCI_DM365_LPSC_TPCC, PSC_ENABLE); + psc_change_state(DAVINCI_DM365_LPSC_TPTC0, PSC_ENABLE); + psc_change_state(DAVINCI_DM365_LPSC_TPTC1, PSC_ENABLE); + psc_change_state(DAVINCI_DM365_LPSC_TPTC2, PSC_ENABLE); + psc_change_state(DAVINCI_DM365_LPSC_TPTC3, PSC_ENABLE); + + edmacc_regs_base[0] = (void *)EDMA_CC0_BASE_REG; + + edma_cc[0] = rt_malloc(sizeof(struct edma)); + if (!edma_cc[0]) { + status = -RT_ENOMEM; + goto fail1; + } + rt_memset(edma_cc[0], 0, sizeof(struct edma)); + + edma_cc[0]->num_channels = min_t(unsigned, info[0]->n_channel, + EDMA_MAX_DMACH); + edma_cc[0]->num_slots = min_t(unsigned, info[0]->n_slot, + EDMA_MAX_PARAMENTRY); + edma_cc[0]->num_cc = min_t(unsigned, info[0]->n_cc, + EDMA_MAX_CC); + + edma_cc[0]->default_queue = info[0]->default_queue; + if (!edma_cc[0]->default_queue) + edma_cc[0]->default_queue = EVENTQ_1; + + edma_dbg("DMA REG BASE ADDR=%p\n", + edmacc_regs_base[j]); + + for (i = 0; i < edma_cc[0]->num_slots; i++) + rt_memcpy((void *)(edmacc_regs_base[0] + PARM_OFFSET(i)), + &dummy_paramset, PARM_SIZE); + + /* Mark all channels as unused */ + rt_memset(edma_cc[0]->edma_unused, 0xff, + sizeof(edma_cc[0]->edma_unused)); + + edma_cc[0]->irq_res_start = IRQ_CCINT0; + rt_hw_interrupt_install(IRQ_CCINT0, dma_irq_handler, RT_NULL, "edma"); + rt_hw_interrupt_umask(IRQ_CCINT0); + + edma_cc[0]->irq_res_end = IRQ_CCERRINT; + rt_hw_interrupt_install(IRQ_CCERRINT, dma_ccerr_handler, RT_NULL, "edma_error"); + rt_hw_interrupt_umask(IRQ_CCERRINT); + + /* Everything lives on transfer controller 1 until otherwise + * specified. This way, long transfers on the low priority queue + * started by the codec engine will not cause audio defects. + */ + for (i = 0; i < edma_cc[0]->num_channels; i++) + map_dmach_queue(0, i, EVENTQ_1); + + queue_tc_mapping = info[0]->queue_tc_mapping; + queue_priority_mapping = info[0]->queue_priority_mapping; + + /* Event queue to TC mapping */ + for (i = 0; queue_tc_mapping[i][0] != -1; i++) + map_queue_tc(0, queue_tc_mapping[i][0], + queue_tc_mapping[i][1]); + + /* Event queue priority mapping */ + for (i = 0; queue_priority_mapping[i][0] != -1; i++) + assign_priority_to_queue(0, + queue_priority_mapping[i][0], + queue_priority_mapping[i][1]); + + /* Map the channel to param entry if channel mapping logic + * exist + */ + if (edma_read(0, EDMA_CCCFG) & CHMAP_EXIST) + map_dmach_param(0); + + for (i = 0; i < info[0]->n_region; i++) { + edma_write_array2(0, EDMA_DRAE, i, 0, 0x0); + edma_write_array2(0, EDMA_DRAE, i, 1, 0x0); + edma_write_array(0, EDMA_QRAE, i, 0x0); + } + arch_num_cc++; + + if (tc_errs_handled) { + rt_hw_interrupt_install(IRQ_TCERRINT0, dma_tc0err_handler, "edma_tc0"); + rt_hw_interrupt_umask(IRQ_TCERRINT0); + rt_hw_interrupt_install(IRQ_TCERRINT, dma_tc1err_handler, "edma_tc1"); + rt_hw_interrupt_umask(IRQ_TCERRINT); + } + + return 0; + +fail: + +fail1: + rt_free(edma_cc[0]); + + return status; +} + + diff --git a/bsp/dm365/platform/edma.h b/bsp/dm365/platform/edma.h new file mode 100644 index 0000000000000000000000000000000000000000..34d5bb1ef7ab89b92064d25ea6e53982ada33026 --- /dev/null +++ b/bsp/dm365/platform/edma.h @@ -0,0 +1,305 @@ +/* + * File : edma.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +/* + * This EDMA3 programming framework exposes two basic kinds of resource: + * + * Channel Triggers transfers, usually from a hardware event but + * also manually or by "chaining" from DMA completions. + * Each channel is coupled to a Parameter RAM (PaRAM) slot. + * + * Slot Each PaRAM slot holds a DMA transfer descriptor (PaRAM + * "set"), source and destination addresses, a link to a + * next PaRAM slot (if any), options for the transfer, and + * instructions for updating those addresses. There are + * more than twice as many slots as event channels. + * + * Each PaRAM set describes a sequence of transfers, either for one large + * buffer or for several discontiguous smaller buffers. An EDMA transfer + * is driven only from a channel, which performs the transfers specified + * in its PaRAM slot until there are no more transfers. When that last + * transfer completes, the "link" field may be used to reload the channel's + * PaRAM slot with a new transfer descriptor. + * + * The EDMA Channel Controller (CC) maps requests from channels into physical + * Transfer Controller (TC) requests when the channel triggers (by hardware + * or software events, or by chaining). The two physical DMA channels provided + * by the TCs are thus shared by many logical channels. + * + * DaVinci hardware also has a "QDMA" mechanism which is not currently + * supported through this interface. (DSP firmware uses it though.) + */ + +#ifndef EDMA_H_ +#define EDMA_H_ + +#include +#include + +#ifdef RT_EDMA_DEBUG +#define edma_dbg(fmt, ...) rt_kprintf(fmt, ##__VA_ARGS__) +#else +#define edma_dbg(fmt, ...) +#endif + + +/* PaRAM slots are laid out like this */ +struct edmacc_param { + unsigned int opt; + unsigned int src; + unsigned int a_b_cnt; + unsigned int dst; + unsigned int src_dst_bidx; + unsigned int link_bcntrld; + unsigned int src_dst_cidx; + unsigned int ccnt; +}; + +#define CCINT0_INTERRUPT 16 +#define CCERRINT_INTERRUPT 17 +#define TCERRINT0_INTERRUPT 18 +#define TCERRINT1_INTERRUPT 19 + +/* fields in edmacc_param.opt */ +#define SAM BIT(0) +#define DAM BIT(1) +#define SYNCDIM BIT(2) +#define STATIC BIT(3) +#define EDMA_FWID (0x07 << 8) +#define TCCMODE BIT(11) +#define EDMA_TCC(t) ((t) << 12) +#define TCINTEN BIT(20) +#define ITCINTEN BIT(21) +#define TCCHEN BIT(22) +#define ITCCHEN BIT(23) + +#define TRWORD (0x7<<2) +#define PAENTRY (0x1ff<<5) + +/* DM365 specific EDMA3 Events Information */ +enum dm365_edma_ch { + DM365_DMA_TIMER3_TINT6, + DM365_DMA_TIMER3_TINT7, + DM365_DMA_MCBSP_TX = 2, + DM365_DMA_VCIF_TX = 2, + DM365_DMA_MCBSP_RX = 3, + DM365_DMA_VCIF_RX = 3, + DM365_DMA_VPSS_EVT1, + DM365_DMA_VPSS_EVT2, + DM365_DMA_VPSS_EVT3, + DM365_DMA_VPSS_EVT4, + DM365_DMA_TIMER2_TINT4, + DM365_DMA_TIMER2_TINT5, + DM365_DMA_SPI2XEVT, + DM365_DMA_SPI2REVT, + DM365_DMA_IMCOP_IMX0INT = 12, + DM365_DMA_KALEIDO_ARMINT = 12, + DM365_DMA_IMCOP_SEQINT, + DM365_DMA_SPI1XEVT, + DM365_DMA_SPI1REVT, + DM365_DMA_SPI0XEVT, + DM365_DMA_SPI0REVT, + DM365_DMA_URXEVT0 = 18, + DM365_DMA_SPI3XEVT = 18, + DM365_DMA_UTXEVT0 = 19, + DM365_DMA_SPI3REVT = 19, + DM365_DMA_URXEVT1, + DM365_DMA_UTXEVT1, + DM365_DMA_TIMER4_TINT8, + DM365_DMA_TIMER4_TINT9, + DM365_DMA_RTOINT, + DM365_DMA_GPIONT9, + DM365_DMA_MMC0RXEVT = 26, + DM365_DMA_MEMSTK_MSEVT = 26, + DM365_DMA_MMC0TXEVT, + DM365_DMA_I2C_ICREVT, + DM365_DMA_I2C_ICXEVT, + DM365_DMA_MMC1RXEVT, + DM365_DMA_MMC1TXEVT, + DM365_DMA_GPIOINT0, + DM365_DMA_GPIOINT1, + DM365_DMA_GPIOINT2, + DM365_DMA_GPIOINT3, + DM365_DMA_GPIOINT4, + DM365_DMA_GPIOINT5, + DM365_DMA_GPIOINT6, + DM365_DMA_GPIOINT7, + DM365_DMA_GPIOINT10 = 40, + DM365_DMA_EMAC_RXTHREESH = 40, + DM365_DMA_GPIOINT11 = 41, + DM365_DMA_EMAC_RXPULSE = 41, + DM365_DMA_GPIOINT12 = 42, + DM365_DMA_EMAC_TXPULSE = 42, + DM365_DMA_GPIOINT13 = 43, + DM365_DMA_EMAC_MISCPULSE = 43, + DM365_DMA_GPIOINT14 = 44, + DM365_DMA_SPI4XEVT = 44, + DM365_DMA_GPIOINT15 = 45, + DM365_DMA_SPI4REVT = 45, + DM365_DMA_ADC_ADINT, + DM365_DMA_GPIOINT8, + DM365_DMA_TIMER0_TINT0, + DM365_DMA_TIMER0_TINT1, + DM365_DMA_TIMER1_TINT2, + DM365_DMA_TIMER1_TINT3, + DM365_DMA_PWM0, + DM365_DMA_PWM1 = 53, + DM365_DMA_IMCOP_IMX1INT = 53, + DM365_DMA_PWM2 = 54, + DM365_DMA_IMCOP_NSFINT = 54, + DM365_DMA_PWM3 = 55, + DM365_DMA_KALEIDO6_CP_UNDEF = 55, + DM365_DMA_IMCOP_VLCDINT = 56, + DM365_DMA_KALEIDO5_CP_ECDCMP = 56, + DM365_DMA_IMCOP_BIMINT = 57, + DM365_DMA_KALEIDO8_CP_ME = 57, + DM365_DMA_IMCOP_DCTINT = 58, + DM365_DMA_KALEIDO1_CP_CALC = 58, + DM365_DMA_IMCOP_QIQINT = 59, + DM365_DMA_KALEIDO7_CP_IPE = 59, + DM365_DMA_IMCOP_BPSINT = 60, + DM365_DMA_KALEIDO2_CP_BS = 60, + DM365_DMA_IMCOP_VLCDERRINT = 61, + DM365_DMA_KALEIDO0_CP_LPF = 61, + DM365_DMA_IMCOP_RCNTINT = 62, + DM365_DMA_KALEIDO3_CP_MC = 62, + DM365_DMA_IMCOP_COPCINT = 63, + DM365_DMA_KALEIDO4_CP_ECDEND = 63, +}; +/* end DM365 specific info */ + + +/*ch_status paramater of callback function possible values*/ +#define DMA_COMPLETE 1 +#define DMA_CC_ERROR 2 +#define DMA_TC1_ERROR 3 +#define DMA_TC2_ERROR 4 + +enum address_mode { + INCR = 0, + FIFO = 1 +}; + +enum fifo_width { + W8BIT = 0, + W16BIT = 1, + W32BIT = 2, + W64BIT = 3, + W128BIT = 4, + W256BIT = 5 +}; + +enum dma_event_q { + EVENTQ_0 = 0, + EVENTQ_1 = 1, + EVENTQ_2 = 2, + EVENTQ_3 = 3, + EVENTQ_DEFAULT = -1 +}; + +enum sync_dimension { + ASYNC = 0, + ABSYNC = 1 +}; + +#define EDMA_CTLR_CHAN(ctlr, chan) (((ctlr) << 16) | (chan)) +#define EDMA_CTLR(i) ((i) >> 16) +#define EDMA_CHAN_SLOT(i) ((i) & 0xffff) + +#define EDMA_CHANNEL_ANY -1 /* for edma_alloc_channel() */ +#define EDMA_SLOT_ANY -1 /* for edma_alloc_slot() */ +#define EDMA_CONT_PARAMS_ANY 1001 +#define EDMA_CONT_PARAMS_FIXED_EXACT 1002 +#define EDMA_CONT_PARAMS_FIXED_NOT_EXACT 1003 + +#define EDMA_MAX_CC 2 + +/* alloc/free DMA channels and their dedicated parameter RAM slots */ +int edma_alloc_channel(int channel, + void (*callback)(unsigned channel, rt_uint16_t ch_status, void *data), + void *data, enum dma_event_q); +void edma_free_channel(unsigned channel); + +/* alloc/free parameter RAM slots */ +int edma_alloc_slot(unsigned ctlr, int slot); +void edma_free_slot(unsigned slot); + +/* alloc/free a set of contiguous parameter RAM slots */ +int edma_alloc_cont_slots(unsigned ctlr, unsigned int id, int slot, int count); +int edma_free_cont_slots(unsigned slot, int count); + +/* calls that operate on part of a parameter RAM slot */ +void edma_set_src(unsigned slot, rt_uint32_t src_port, + enum address_mode mode, enum fifo_width); +void edma_set_dest(unsigned slot, rt_uint32_t dest_port, + enum address_mode mode, enum fifo_width); +void edma_get_position(unsigned slot, rt_uint32_t *src, rt_uint32_t *dst); +void edma_set_src_index(unsigned slot, rt_int16_t src_bidx, rt_int16_t src_cidx); +void edma_set_dest_index(unsigned slot, rt_int16_t dest_bidx, rt_int16_t dest_cidx); +void edma_set_transfer_params(unsigned slot, rt_uint16_t acnt, rt_uint16_t bcnt, rt_uint16_t ccnt, + rt_uint16_t bcnt_rld, enum sync_dimension sync_mode); +void edma_link(unsigned from, unsigned to); +void edma_unlink(unsigned from); + +/* calls that operate on an entire parameter RAM slot */ +void edma_write_slot(unsigned slot, const struct edmacc_param *params); +void edma_read_slot(unsigned slot, struct edmacc_param *params); + +/* channel control operations */ +int edma_start(unsigned channel); +void edma_stop(unsigned channel); +void edma_clean_channel(unsigned channel); +void edma_clear_event(unsigned channel); +void edma_pause(unsigned channel); +void edma_resume(unsigned channel); + + +struct edma_rsv_info { + + const rt_int16_t (*rsv_chans)[2]; + const rt_int16_t (*rsv_slots)[2]; +}; + +/* platform_data for EDMA driver */ +struct edma_soc_info { + + /* how many dma resources of each type */ + unsigned n_channel; + unsigned n_region; + unsigned n_slot; + unsigned n_tc; + unsigned n_cc; + enum dma_event_q default_queue; + + /* Resource reservation for other cores */ + struct edma_rsv_info *rsv; + + const rt_int8_t (*queue_tc_mapping)[2]; + const rt_int8_t (*queue_priority_mapping)[2]; +}; + +int edma_init(struct edma_soc_info **info); + + +#endif diff --git a/bsp/dm365/platform/findbit.S b/bsp/dm365/platform/findbit.S new file mode 100644 index 0000000000000000000000000000000000000000..0c18563c96846fdc33d21212bea00986c1010f11 --- /dev/null +++ b/bsp/dm365/platform/findbit.S @@ -0,0 +1,207 @@ +/* + * File : findbit.S + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ +//#include + //.text + +/* + * Purpose : Find a 'zero' bit + * Prototype: int find_first_zero_bit(void *addr, unsigned int maxbit); + */ +.globl _find_first_zero_bit_le +_find_first_zero_bit_le: + teq r1, #0 + beq 3f + mov r2, #0 +1: + ldrb r3, [r0, r2, lsr #3] + lsr r3, r2, #3 + ldrb r3, [r0, r3] + eors r3, r3, #0xff @ invert bits + bne .L_found @ any now set - found zero bit + add r2, r2, #8 @ next bit pointer +2: cmp r2, r1 @ any more? + blo 1b +3: mov r0, r1 @ no free bits + mov pc, lr +//ENDPROC(_find_first_zero_bit_le) + +/* + * Purpose : Find next 'zero' bit + * Prototype: int find_next_zero_bit(void *addr, unsigned int maxbit, int offset) + */ +.globl _find_next_zero_bit_le +_find_next_zero_bit_le: + teq r1, #0 + beq 3b + ands ip, r2, #7 + beq 1b @ If new byte, goto old routine + ldrb r3, [r0, r2, lsr #3] + lsr r3, r2, #3 + ldrb r3, [r0, r3] + eor r3, r3, #0xff @ now looking for a 1 bit + movs r3, r3, lsr ip @ shift off unused bits + bne .L_found + orr r2, r2, #7 @ if zero, then no bits here + add r2, r2, #1 @ align bit pointer + b 2b @ loop for next bit +//ENDPROC(_find_next_zero_bit_le) + +/* + * Purpose : Find a 'one' bit + * Prototype: int find_first_bit(const unsigned long *addr, unsigned int maxbit); + */ +.globl _find_first_bit_le +_find_first_bit_le: + teq r1, #0 + beq 3f + mov r2, #0 +1: + ldrb r3, [r0, r2, lsr #3] + lsr r3, r2, #3 + ldrb r3, [r0, r3] + movs r3, r3 + bne .L_found @ any now set - found zero bit + add r2, r2, #8 @ next bit pointer +2: cmp r2, r1 @ any more? + blo 1b +3: mov r0, r1 @ no free bits + mov pc, lr +//ENDPROC(_find_first_bit_le) + +/* + * Purpose : Find next 'one' bit + * Prototype: int find_next_zero_bit(void *addr, unsigned int maxbit, int offset) + */ +.globl _find_next_bit_le +_find_next_bit_le: + teq r1, #0 + beq 3b + ands ip, r2, #7 + beq 1b @ If new byte, goto old routine + ldrb r3, [r0, r2, lsr #3] + lsr r3, r2, #3 + ldrb r3, [r0, r3] + movs r3, r3, lsr ip @ shift off unused bits + bne .L_found + orr r2, r2, #7 @ if zero, then no bits here + add r2, r2, #1 @ align bit pointer + b 2b @ loop for next bit +//ENDPROC(_find_next_bit_le) + +#ifdef __ARMEB__ + +ENTRY(_find_first_zero_bit_be) + teq r1, #0 + beq 3f + mov r2, #0 +1: eor r3, r2, #0x18 @ big endian byte ordering + ARM( ldrb r3, [r0, r3, lsr #3] ) + THUMB( lsr r3, #3 ) + THUMB( ldrb r3, [r0, r3] ) + eors r3, r3, #0xff @ invert bits + bne .L_found @ any now set - found zero bit + add r2, r2, #8 @ next bit pointer +2: cmp r2, r1 @ any more? + blo 1b +3: mov r0, r1 @ no free bits + mov pc, lr +ENDPROC(_find_first_zero_bit_be) + +ENTRY(_find_next_zero_bit_be) + teq r1, #0 + beq 3b + ands ip, r2, #7 + beq 1b @ If new byte, goto old routine + eor r3, r2, #0x18 @ big endian byte ordering + ARM( ldrb r3, [r0, r3, lsr #3] ) + THUMB( lsr r3, #3 ) + THUMB( ldrb r3, [r0, r3] ) + eor r3, r3, #0xff @ now looking for a 1 bit + movs r3, r3, lsr ip @ shift off unused bits + bne .L_found + orr r2, r2, #7 @ if zero, then no bits here + add r2, r2, #1 @ align bit pointer + b 2b @ loop for next bit +ENDPROC(_find_next_zero_bit_be) + +ENTRY(_find_first_bit_be) + teq r1, #0 + beq 3f + mov r2, #0 +1: eor r3, r2, #0x18 @ big endian byte ordering + ARM( ldrb r3, [r0, r3, lsr #3] ) + THUMB( lsr r3, #3 ) + THUMB( ldrb r3, [r0, r3] ) + movs r3, r3 + bne .L_found @ any now set - found zero bit + add r2, r2, #8 @ next bit pointer +2: cmp r2, r1 @ any more? + blo 1b +3: mov r0, r1 @ no free bits + mov pc, lr +ENDPROC(_find_first_bit_be) + +ENTRY(_find_next_bit_be) + teq r1, #0 + beq 3b + ands ip, r2, #7 + beq 1b @ If new byte, goto old routine + eor r3, r2, #0x18 @ big endian byte ordering + ARM( ldrb r3, [r0, r3, lsr #3] ) + THUMB( lsr r3, #3 ) + THUMB( ldrb r3, [r0, r3] ) + movs r3, r3, lsr ip @ shift off unused bits + bne .L_found + orr r2, r2, #7 @ if zero, then no bits here + add r2, r2, #1 @ align bit pointer + b 2b @ loop for next bit +ENDPROC(_find_next_bit_be) + +#endif + +/* + * One or more bits in the LSB of r3 are assumed to be set. + */ +.L_found: +#if 1 //__LINUX_ARM_ARCH__ >= 5 + rsb r0, r3, #0 + and r3, r3, r0 + clz r3, r3 + rsb r3, r3, #31 + add r0, r2, r3 +#else + tst r3, #0x0f + addeq r2, r2, #4 + movne r3, r3, lsl #4 + tst r3, #0x30 + addeq r2, r2, #2 + movne r3, r3, lsl #2 + tst r3, #0x40 + addeq r2, r2, #1 + mov r0, r2 +#endif + cmp r1, r0 @ Clamp to maxbit + movlo r0, r1 + mov pc, lr + diff --git a/bsp/dm365/platform/interrupt.c b/bsp/dm365/platform/interrupt.c new file mode 100644 index 0000000000000000000000000000000000000000..7e8772ed6e5a8fd1d340b827b48b3f9ddd08c40b --- /dev/null +++ b/bsp/dm365/platform/interrupt.c @@ -0,0 +1,309 @@ +/* + * File : interrupt.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + + +#include +#include +#include "dm36x.h" + +#define MAX_HANDLERS 64 + +extern rt_uint32_t rt_interrupt_nest; + +struct rt_irq_desc irq_desc[MAX_HANDLERS]; + +/* exception and interrupt handler table */ +rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread; +rt_uint32_t rt_thread_switch_interrupt_flag; + +#define IRQ_BIT(irq) ((irq) & 0x1f) + +#define FIQ_REG0_OFFSET 0x0000 +#define FIQ_REG1_OFFSET 0x0004 +#define IRQ_REG0_OFFSET 0x0008 +#define IRQ_REG1_OFFSET 0x000C +#define IRQ_ENT_REG0_OFFSET 0x0018 +#define IRQ_ENT_REG1_OFFSET 0x001C +#define IRQ_INCTL_REG_OFFSET 0x0020 +#define IRQ_EABASE_REG_OFFSET 0x0024 +#define IRQ_INTPRI0_REG_OFFSET 0x0030 +#define IRQ_INTPRI7_REG_OFFSET 0x004C + +/* FIQ are pri 0-1; otherwise 2-7, with 7 lowest priority */ +static const rt_uint8_t dm365_default_priorities[DAVINCI_N_AINTC_IRQ] = { + [IRQ_DM3XX_VPSSINT0] = 2, + [IRQ_DM3XX_VPSSINT1] = 6, + [IRQ_DM3XX_VPSSINT2] = 6, + [IRQ_DM3XX_VPSSINT3] = 6, + [IRQ_DM3XX_VPSSINT4] = 6, + [IRQ_DM3XX_VPSSINT5] = 6, + [IRQ_DM3XX_VPSSINT6] = 6, + [IRQ_DM3XX_VPSSINT7] = 7, + [IRQ_DM3XX_VPSSINT8] = 6, + [IRQ_ASQINT] = 6, + [IRQ_DM365_IMXINT0] = 6, + [IRQ_DM3XX_IMCOPINT] = 6, + [IRQ_USBINT] = 4, + [IRQ_DM3XX_RTOINT] = 4, + [IRQ_DM3XX_TINT5] = 7, + [IRQ_DM3XX_TINT6] = 7, + [IRQ_CCINT0] = 5, /* dma */ + [IRQ_DM3XX_SPINT1_0] = 5, /* dma */ + [IRQ_DM3XX_SPINT1_1] = 5, /* dma */ + [IRQ_DM3XX_SPINT2_0] = 5, /* dma */ + [IRQ_DM365_PSCINT] = 7, + [IRQ_DM3XX_SPINT2_1] = 7, + [IRQ_DM3XX_TINT7] = 4, + [IRQ_DM3XX_SDIOINT0] = 7, + [IRQ_DM365_MBXINT] = 7, + [IRQ_DM365_MBRINT] = 7, + [IRQ_DM3XX_MMCINT0] = 7, + [IRQ_DM3XX_MMCINT1] = 7, + [IRQ_DM3XX_PWMINT3] = 7, + [IRQ_DM365_DDRINT] = 7, + [IRQ_DM365_AEMIFINT] = 7, + [IRQ_DM3XX_SDIOINT1] = 4, + [IRQ_DM365_TINT0] = 2, /* clockevent */ + [IRQ_DM365_TINT1] = 2, /* clocksource */ + [IRQ_DM365_TINT2] = 7, /* DSP timer */ + [IRQ_DM365_TINT3] = 7, /* system tick */ + [IRQ_PWMINT0] = 7, + [IRQ_PWMINT1] = 7, + [IRQ_DM365_PWMINT2] = 7, + [IRQ_DM365_IICINT] = 3, + [IRQ_UARTINT0] = 3, + [IRQ_UARTINT1] = 3, + [IRQ_DM3XX_SPINT0_0] = 3, + [IRQ_DM3XX_SPINT0_1] = 3, + [IRQ_DM3XX_GPIO0] = 3, + [IRQ_DM3XX_GPIO1] = 7, + [IRQ_DM3XX_GPIO2] = 4, + [IRQ_DM3XX_GPIO3] = 4, + [IRQ_DM3XX_GPIO4] = 7, + [IRQ_DM3XX_GPIO5] = 7, + [IRQ_DM3XX_GPIO6] = 7, + [IRQ_DM3XX_GPIO7] = 7, + [IRQ_DM3XX_GPIO8] = 7, + [IRQ_DM3XX_GPIO9] = 7, + [IRQ_DM365_GPIO10] = 7, + [IRQ_DM365_GPIO11] = 7, + [IRQ_DM365_GPIO12] = 7, + [IRQ_DM365_GPIO13] = 7, + [IRQ_DM365_GPIO14] = 7, + [IRQ_DM365_GPIO15] = 7, + [IRQ_DM365_KEYINT] = 7, + [IRQ_DM365_COMMTX] = 7, + [IRQ_DM365_COMMRX] = 7, + [IRQ_EMUINT] = 7, +}; + +static inline unsigned int davinci_irq_readl(int offset) +{ + return davinci_readl(DAVINCI_ARM_INTC_BASE + offset); +} + +static inline void davinci_irq_writel(unsigned long value, int offset) +{ + davinci_writel(value, DAVINCI_ARM_INTC_BASE + offset); +} + +/** + * @addtogroup DM36X + */ +/*@{*/ + +rt_isr_handler_t rt_hw_interrupt_handle(int vector, void *param) +{ + rt_kprintf("Unhandled interrupt %d occured!!!\n", vector); + return RT_NULL; +} + +/** + * This function will initialize hardware interrupt + */ +void rt_hw_interrupt_init(void) +{ + int i; + register rt_uint32_t idx; + const rt_uint8_t *priority; + priority = dm365_default_priorities; + + /* Clear all interrupt requests */ + davinci_irq_writel(~0x0, FIQ_REG0_OFFSET); + davinci_irq_writel(~0x0, FIQ_REG1_OFFSET); + davinci_irq_writel(~0x0, IRQ_REG0_OFFSET); + davinci_irq_writel(~0x0, IRQ_REG1_OFFSET); + + /* Disable all interrupts */ + davinci_irq_writel(0x0, IRQ_ENT_REG0_OFFSET); + davinci_irq_writel(0x0, IRQ_ENT_REG1_OFFSET); + + /* Interrupts disabled immediately, IRQ entry reflects all */ + davinci_irq_writel(0x0, IRQ_INCTL_REG_OFFSET); + + /* we don't use the hardware vector table, just its entry addresses */ + davinci_irq_writel(0, IRQ_EABASE_REG_OFFSET); + + /* Clear all interrupt requests */ + davinci_irq_writel(~0x0, FIQ_REG0_OFFSET); + davinci_irq_writel(~0x0, FIQ_REG1_OFFSET); + davinci_irq_writel(~0x0, IRQ_REG0_OFFSET); + davinci_irq_writel(~0x0, IRQ_REG1_OFFSET); + + for (i = IRQ_INTPRI0_REG_OFFSET; i <= IRQ_INTPRI7_REG_OFFSET; i += 4) { + unsigned j; + rt_uint32_t pri; + + for (j = 0, pri = 0; j < 32; j += 4, priority++) + pri |= (*priority & 0x07) << j; + davinci_irq_writel(pri, i); + } + + /* init exceptions table */ + for(idx=0; idx < MAX_HANDLERS; idx++) + { + + irq_desc[idx].handler = (rt_isr_handler_t)rt_hw_interrupt_handle; + irq_desc[idx].param = RT_NULL; + #ifdef RT_USING_INTERRUPT_INFO + rt_snprintf(irq_desc[idx].name, RT_NAME_MAX - 1, "default"); + irq_desc[idx].counter = 0; + #endif + } + + /* init interrupt nest, and context in thread sp */ + rt_interrupt_nest = 0; + rt_interrupt_from_thread = 0; + rt_interrupt_to_thread = 0; + rt_thread_switch_interrupt_flag = 0; +} + +/** + * This function will mask a interrupt. + * @param vector the interrupt number + */ +void rt_hw_interrupt_mask(int irq) +{ + unsigned int mask; + rt_uint32_t l; + + mask = 1 << IRQ_BIT(irq); + + if (irq > 31) { + l = davinci_irq_readl(IRQ_ENT_REG1_OFFSET); + l &= ~mask; + davinci_irq_writel(l, IRQ_ENT_REG1_OFFSET); + } else { + l = davinci_irq_readl(IRQ_ENT_REG0_OFFSET); + l &= ~mask; + davinci_irq_writel(l, IRQ_ENT_REG0_OFFSET); + } +} + +/** + * This function will un-mask a interrupt. + * @param vector the interrupt number + */ +void rt_hw_interrupt_umask(int irq) +{ + unsigned int mask; + rt_uint32_t l; + + mask = 1 << IRQ_BIT(irq); + + if (irq > 31) { + l = davinci_irq_readl(IRQ_ENT_REG1_OFFSET); + l |= mask; + davinci_irq_writel(l, IRQ_ENT_REG1_OFFSET); + } else { + l = davinci_irq_readl(IRQ_ENT_REG0_OFFSET); + l |= mask; + davinci_irq_writel(l, IRQ_ENT_REG0_OFFSET); + } +} + +/** + * This function will install a interrupt service routine to a interrupt. + * @param vector the interrupt number + * @param handler the interrupt service routine to be installed + * @param param the interrupt service function parameter + * @param name the interrupt name + * @return old handler + */ + +rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler, + void *param, char *name) +{ + rt_isr_handler_t old_handler = RT_NULL; + + if(vector < MAX_HANDLERS) + { + old_handler = irq_desc[vector].handler; + if (handler != RT_NULL) + { + irq_desc[vector].handler = (rt_isr_handler_t)handler; + irq_desc[vector].param = param; + #ifdef RT_USING_INTERRUPT_INFO + rt_snprintf(irq_desc[vector].name, RT_NAME_MAX - 1, "%s", name); + irq_desc[vector].counter = 0; + #endif + } + } + + return old_handler; + +} + +#ifdef RT_USING_FINSH +#ifdef RT_USING_INTERRUPT_INFO +void list_irq(void) +{ + int irq; + + rt_kprintf("number\tcount\tname\n"); + for (irq = 0; irq < MAX_HANDLERS; irq++) + { + if (rt_strncmp(irq_desc[irq].name, "default", sizeof("default"))) + { + rt_kprintf("%02ld: %10ld %s\n", irq, irq_desc[irq].counter, irq_desc[irq].name); + } + } +} + +#include +FINSH_FUNCTION_EXPORT(list_irq, list system irq); + +#ifdef FINSH_USING_MSH +int cmd_list_irq(int argc, char** argv) +{ + list_irq(); + return 0; +} +FINSH_FUNCTION_EXPORT_ALIAS(cmd_list_irq, __cmd_list_irq, list system irq.); + +#endif +#endif +#endif + +/*@}*/ diff --git a/bsp/dm365/platform/irqs.h b/bsp/dm365/platform/irqs.h new file mode 100644 index 0000000000000000000000000000000000000000..b0e345f923e06816bc92be4572fc216ae741f518 --- /dev/null +++ b/bsp/dm365/platform/irqs.h @@ -0,0 +1,205 @@ +/* + * File : irqs.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +#ifndef __DM36X_IRQS_H__ +#define __DM36X_IRQS_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +/* Base address */ +#define DAVINCI_ARM_INTC_BASE 0x01C48000 + +#define DAVINCI_N_AINTC_IRQ 64 + +/* Interrupt lines */ +#define IRQ_VDINT0 0 +#define IRQ_VDINT1 1 +#define IRQ_VDINT2 2 +#define IRQ_HISTINT 3 +#define IRQ_H3AINT 4 +#define IRQ_PRVUINT 5 +#define IRQ_RSZINT 6 +#define IRQ_VFOCINT 7 +#define IRQ_VENCINT 8 +#define IRQ_ASQINT 9 +#define IRQ_IMXINT 10 +#define IRQ_VLCDINT 11 +#define IRQ_USBINT 12 +#define IRQ_EMACINT 13 + +#define IRQ_CCINT0 16 +#define IRQ_CCERRINT 17 +#define IRQ_TCERRINT0 18 +#define IRQ_TCERRINT 19 +#define IRQ_PSCIN 20 + +#define IRQ_IDE 22 +#define IRQ_HPIINT 23 +#define IRQ_MBXINT 24 +#define IRQ_MBRINT 25 +#define IRQ_MMCINT 26 +#define IRQ_SDIOINT 27 +#define IRQ_MSINT 28 +#define IRQ_DDRINT 29 +#define IRQ_AEMIFINT 30 +#define IRQ_VLQINT 31 +#define IRQ_TINT0_TINT12 32 +#define IRQ_TINT0_TINT34 33 +#define IRQ_TINT1_TINT12 34 +#define IRQ_TINT1_TINT34 35 +#define IRQ_PWMINT0 36 +#define IRQ_PWMINT1 37 +#define IRQ_PWMINT2 38 +#define IRQ_I2C 39 +#define IRQ_UARTINT0 40 +#define IRQ_UARTINT1 41 +#define IRQ_UARTINT2 42 +#define IRQ_SPINT0 43 +#define IRQ_SPINT1 44 + +#define IRQ_DSP2ARM0 46 +#define IRQ_DSP2ARM1 47 +#define IRQ_GPIO0 48 +#define IRQ_GPIO1 49 +#define IRQ_GPIO2 50 +#define IRQ_GPIO3 51 +#define IRQ_GPIO4 52 +#define IRQ_GPIO5 53 +#define IRQ_GPIO6 54 +#define IRQ_GPIO7 55 +#define IRQ_GPIOBNK0 56 +#define IRQ_GPIOBNK1 57 +#define IRQ_GPIOBNK2 58 +#define IRQ_GPIOBNK3 59 +#define IRQ_GPIOBNK4 60 +#define IRQ_COMMTX 61 +#define IRQ_COMMRX 62 +#define IRQ_EMUINT 63 + +/* + * Base Interrupts common across DM355 and DM365 + */ +#define IRQ_DM3XX_VPSSINT0 0 +#define IRQ_DM3XX_VPSSINT1 1 +#define IRQ_DM3XX_VPSSINT2 2 +#define IRQ_DM3XX_VPSSINT3 3 +#define IRQ_DM3XX_VPSSINT4 4 +#define IRQ_DM3XX_VPSSINT5 5 +#define IRQ_DM3XX_VPSSINT6 6 +#define IRQ_DM3XX_VPSSINT7 7 +#define IRQ_DM3XX_VPSSINT8 8 +#define IRQ_DM3XX_IMCOPINT 11 +#define IRQ_DM3XX_RTOINT 13 +#define IRQ_DM3XX_TINT4 13 +#define IRQ_DM3XX_TINT2_TINT12 13 +#define IRQ_DM3XX_TINT5 14 +#define IRQ_DM3XX_TINT2_TINT34 14 +#define IRQ_DM3XX_TINT6 15 +#define IRQ_DM3XX_TINT3_TINT12 15 +#define IRQ_DM3XX_SPINT1_0 17 +#define IRQ_DM3XX_SPINT1_1 18 +#define IRQ_DM3XX_SPINT2_0 19 +#define IRQ_DM3XX_SPINT2_1 21 +#define IRQ_DM3XX_TINT7 22 +#define IRQ_DM3XX_TINT3_TINT34 22 +#define IRQ_DM3XX_SDIOINT0 23 +#define IRQ_DM3XX_MMCINT0 26 +#define IRQ_DM3XX_MSINT 26 +#define IRQ_DM3XX_MMCINT1 27 +#define IRQ_DM3XX_PWMINT3 28 +#define IRQ_DM3XX_SDIOINT1 31 +#define IRQ_DM3XX_SPINT0_0 42 +#define IRQ_DM3XX_SPINT0_1 43 +#define IRQ_DM3XX_GPIO0 44 +#define IRQ_DM3XX_GPIO1 45 +#define IRQ_DM3XX_GPIO2 46 +#define IRQ_DM3XX_GPIO3 47 +#define IRQ_DM3XX_GPIO4 48 +#define IRQ_DM3XX_GPIO5 49 +#define IRQ_DM3XX_GPIO6 50 +#define IRQ_DM3XX_GPIO7 51 +#define IRQ_DM3XX_GPIO8 52 +#define IRQ_DM3XX_GPIO9 53 + +/* DaVinci DM365-specific Interrupts */ +#define IRQ_DM365_INSFINT 7 +#define IRQ_DM365_IMXINT1 8 +#define IRQ_DM365_IMXINT0 10 +#define IRQ_DM365_KLD_ARMINT 10 +#define IRQ_DM365_CCERRINT 17 +#define IRQ_DM365_TCERRINT0 18 +#define IRQ_DM365_SPINT2_0 19 +#define IRQ_DM365_PSCINT 20 +#define IRQ_DM365_TVINT 20 +#define IRQ_DM365_SPINT4_0 21 +#define IRQ_DM365_MBXINT 24 +#define IRQ_DM365_VCINT 24 +#define IRQ_DM365_MBRINT 25 +#define IRQ_DM365_TINT9 28 +#define IRQ_DM365_TINT4_TINT34 28 +#define IRQ_DM365_DDRINT 29 +#define IRQ_DM365_RTCINT 29 +#define IRQ_DM365_AEMIFINT 30 +#define IRQ_DM365_HPIINT 30 +#define IRQ_DM365_TINT0 32 +#define IRQ_DM365_TINT0_TINT12 32 +#define IRQ_DM365_TINT1 33 +#define IRQ_DM365_TINT0_TINT34 33 +#define IRQ_DM365_TINT2 34 +#define IRQ_DM365_TINT1_TINT12 34 +#define IRQ_DM365_TINT3 35 +#define IRQ_DM365_TINT1_TINT34 35 +#define IRQ_DM365_PWMINT2 38 +#define IRQ_DM365_TINT8 38 +#define IRQ_DM365_TINT4_TINT12 38 +#define IRQ_DM365_IICINT 39 +#define IRQ_DM365_SPINT3_0 43 +#define IRQ_DM365_EMAC_RXTHRESH 52 +#define IRQ_DM365_EMAC_RXPULSE 53 +#define IRQ_DM365_GPIO10 54 +#define IRQ_DM365_EMAC_TXPULSE 54 +#define IRQ_DM365_GPIO11 55 +#define IRQ_DM365_EMAC_MISCPULSE 55 +#define IRQ_DM365_GPIO12 56 +#define IRQ_DM365_PWRGIO0 56 +#define IRQ_DM365_GPIO13 57 +#define IRQ_DM365_PWRGIO1 57 +#define IRQ_DM365_GPIO14 58 +#define IRQ_DM365_PWRGIO2 58 +#define IRQ_DM365_GPIO15 59 +#define IRQ_DM365_ADCINT 59 +#define IRQ_DM365_KEYINT 60 +#define IRQ_DM365_COMMTX 61 +#define IRQ_DM365_TCERRINT2 61 +#define IRQ_DM365_COMMRX 62 +#define IRQ_DM365_TCERRINT3 62 + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/bsp/dm365/platform/psc.c b/bsp/dm365/platform/psc.c new file mode 100644 index 0000000000000000000000000000000000000000..0fbed347f6fd33bac4617321c52b64819ab518cd --- /dev/null +++ b/bsp/dm365/platform/psc.c @@ -0,0 +1,71 @@ +/* + * File : psc.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +#include "dm36x.h" + + +/* ------------------------------------------------------------------------ * + * psc_change_state( id, state ) * + * id = Domain #ID * + * state = ( ENABLE, DISABLE, SYNCRESET, RESET ) * + * ( =3 , =2 , =1 , =0 ) * + * ------------------------------------------------------------------------ */ +void psc_change_state(int id, int state) +{ + rt_uint32_t mdstat, mdctl; + + if (id > DAVINCI_DM365_LPSC_KALEIDO) + return; + + mdstat = PSC_MDSTAT_BASE + (id * 4); + mdctl = PSC_MDCTL_BASE + (id * 4); + + /* + * Step 0 - Ignore request if the state is already set as is + */ + if ((readl(mdstat) & 0x1f) == state) + return; + + /* + * Step 1 - Wait for PTSTAT.GOSTAT to clear + */ + while (readl(PSC_PTSTAT) & 1) ; + + /* + * Step 2 - Set MDCTLx.NEXT to new state + */ + writel(readl(mdctl) & (~0x1f), mdctl); + writel(readl(mdctl) | state, mdctl); + + /* + * Step 3 - Start power transition ( set PTCMD.GO to 1 ) + */ + writel(readl(PSC_PTCMD) | 1, PSC_PTCMD); + + /* + * Step 4 - Wait for PTSTAT.GOSTAT to clear + */ + while (readl(PSC_PTSTAT) & 1) ; +} + diff --git a/bsp/dm365/platform/psc.h b/bsp/dm365/platform/psc.h new file mode 100644 index 0000000000000000000000000000000000000000..10068a95530e6a3e2bbd9421914ebb80c3cbbe26 --- /dev/null +++ b/bsp/dm365/platform/psc.h @@ -0,0 +1,109 @@ +/* + * File : psc.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +#ifndef __DM36X_PSC_H +#define __DM36X_PSC_H + +#ifdef __cplusplus +extern "C" { +#endif + + +/* PSC register offsets */ +#define EPCPR 0x070 +#define PTCMD 0x120 +#define PTSTAT 0x128 +#define PDSTAT 0x200 +#define PDCTL1 0x304 +#define MDSTAT(n) (0x800 + (n) * 4) +#define MDCTL(n) (0xA00 + (n) * 4) + +/* Power and Sleep Controller (PSC) Domains */ +#define DAVINCI_GPSC_ARMDOMAIN 0 +#define DAVINCI_GPSC_DSPDOMAIN 1 + + +#define DAVINCI_DM365_LPSC_TPCC 0 +#define DAVINCI_DM365_LPSC_TPTC0 1 +#define DAVINCI_DM365_LPSC_TPTC1 2 +#define DAVINCI_DM365_LPSC_TPTC2 3 +#define DAVINCI_DM365_LPSC_TPTC3 4 +#define DAVINCI_DM365_LPSC_TIMER3 5 +#define DAVINCI_DM365_LPSC_SPI1 6 +#define DAVINCI_DM365_LPSC_MMC_SD1 7 +#define DAVINCI_DM365_LPSC_McBSP 8 +#define DAVINCI_DM365_LPSC_USB 9 +#define DAVINCI_DM365_LPSC_PWM3 10 +#define DAVINCI_DM365_LPSC_SPI2 11 +#define DAVINCI_DM365_LPSC_RTO 12 +#define DAVINCI_DM365_LPSC_DDR_EMIF 13 +#define DAVINCI_DM365_LPSC_AEMIF 14 +#define DAVINCI_DM365_LPSC_MMC_SD 15 +#define DAVINCI_DM365_LPSC_MMC_SD0 15 +#define DAVINCI_DM365_LPSC_MEMSTICK 16 +#define DAVINCI_DM365_LPSC_TIMER4 17 +#define DAVINCI_DM365_LPSC_I2C 18 +#define DAVINCI_DM365_LPSC_UART0 19 +#define DAVINCI_DM365_LPSC_UART1 20 +#define DAVINCI_DM365_LPSC_UHPI 21 +#define DAVINCI_DM365_LPSC_SPI0 22 +#define DAVINCI_DM365_LPSC_PWM0 23 +#define DAVINCI_DM365_LPSC_PWM1 24 +#define DAVINCI_DM365_LPSC_PWM2 25 +#define DAVINCI_DM365_LPSC_GPIO 26 +#define DAVINCI_DM365_LPSC_TIMER0 27 +#define DAVINCI_DM365_LPSC_TIMER1 28 +#define DAVINCI_DM365_LPSC_TIMER2 29 +#define DAVINCI_DM365_LPSC_SYSTEM_SUBSYS 30 +#define DAVINCI_DM365_LPSC_ARM 31 +#define DAVINCI_DM365_LPSC_SCR0 33 +#define DAVINCI_DM365_LPSC_SCR1 34 +#define DAVINCI_DM365_LPSC_EMU 35 +#define DAVINCI_DM365_LPSC_CHIPDFT 36 +#define DAVINCI_DM365_LPSC_PBIST 37 +#define DAVINCI_DM365_LPSC_SPI3 38 +#define DAVINCI_DM365_LPSC_SPI4 39 +#define DAVINCI_DM365_LPSC_CPGMAC 40 +#define DAVINCI_DM365_LPSC_RTC 41 +#define DAVINCI_DM365_LPSC_KEYSCAN 42 +#define DAVINCI_DM365_LPSC_ADCIF 43 +#define DAVINCI_DM365_LPSC_VOICE_CODEC 44 +#define DAVINCI_DM365_LPSC_DAC_CLKRES 45 +#define DAVINCI_DM365_LPSC_DAC_CLK 46 +#define DAVINCI_DM365_LPSC_VPSSMSTR 47 +#define DAVINCI_DM365_LPSC_IMCOP 50 +#define DAVINCI_DM365_LPSC_KALEIDO 51 + +#define PSC_ENABLE 3 +#define PSC_DISABLE 2 +#define PSC_SYNCRESET 1 +#define PSC_RESET 0 + +void psc_change_state(int id, int state); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/bsp/dm365/platform/reset.c b/bsp/dm365/platform/reset.c new file mode 100644 index 0000000000000000000000000000000000000000..9d7d549dbf1266bf3abefdb9fb65690e8f1ce7b3 --- /dev/null +++ b/bsp/dm365/platform/reset.c @@ -0,0 +1,77 @@ +/* + * File : reset.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + + +#include +#include +#include "dm36x.h" + +/** + * @addtogroup DM36X + */ +/*@{*/ + +/** + * reset cpu by dog's time-out + * + */ +void machine_reset() +{ + reset_system(); +} + +/** + * shutdown CPU + * + */ +void machine_shutdown() +{ + +} + +#ifdef RT_USING_FINSH + +#include +FINSH_FUNCTION_EXPORT_ALIAS(rt_hw_cpu_reset, reset, restart the system); + +#ifdef FINSH_USING_MSH +int cmd_reset(int argc, char** argv) +{ + rt_hw_cpu_reset(); + return 0; +} + +int cmd_shutdown(int argc, char** argv) +{ + rt_hw_cpu_shutdown(); + return 0; +} + +FINSH_FUNCTION_EXPORT_ALIAS(cmd_reset, __cmd_reset, restart the system.); +FINSH_FUNCTION_EXPORT_ALIAS(cmd_shutdown, __cmd_shutdown, shutdown the system.); + +#endif +#endif + +/*@}*/ diff --git a/bsp/dm365/platform/start_gcc.S b/bsp/dm365/platform/start_gcc.S new file mode 100644 index 0000000000000000000000000000000000000000..ff926e5a0d137f53dfad60f88cb48801a1d87c08 --- /dev/null +++ b/bsp/dm365/platform/start_gcc.S @@ -0,0 +1,367 @@ +/* + * File : start.S + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + +#define CONFIG_STACKSIZE 512 +#define S_FRAME_SIZE 68 + +#define S_PC 64 +#define S_LR 60 +#define S_SP 56 +#define S_IP 52 +#define S_FP 48 +#define S_R10 44 +#define S_R9 40 +#define S_R8 36 +#define S_R7 32 +#define S_R6 28 +#define S_R5 24 +#define S_R4 20 +#define S_R3 16 +#define S_R2 12 +#define S_R1 8 +#define S_R0 4 +#define S_CPSR 0 + +.equ I_BIT, 0x80 @ when I bit is set, IRQ is disabled +.equ F_BIT, 0x40 @ when F bit is set, FIQ is disabled + +.equ USERMODE, 0x10 +.equ FIQMODE, 0x11 +.equ IRQMODE, 0x12 +.equ SVCMODE, 0x13 +.equ ABORTMODE, 0x17 +.equ UNDEFMODE, 0x1b +.equ MODEMASK, 0x1f +.equ NOINT, 0xc0 + +.equ RAM_BASE, 0x00000000 /*Start address of RAM */ +.equ ROM_BASE, 0x80000000 /*Start address of Flash */ + + +.equ EINT_ENABLE0, 0x01c48018 +.equ EINT_ENABLE1, 0x01c4801c + +/* + ************************************************************************* + * + * Jump vector table + * + ************************************************************************* + */ + +.section .init, "ax" +.code 32 + +.globl _start +_start: + b reset + ldr pc, _vector_undef + ldr pc, _vector_swi + ldr pc, _vector_pabt + ldr pc, _vector_dabt + ldr pc, _vector_resv + ldr pc, _vector_irq + ldr pc, _vector_fiq + +_vector_undef: .word vector_undef +_vector_swi: .word vector_swi +_vector_pabt: .word vector_pabt +_vector_dabt: .word vector_dabt +_vector_resv: .word vector_resv +_vector_irq: .word vector_irq +_vector_fiq: .word vector_fiq + +.balignl 16,0xdeadbeef + +/* + ************************************************************************* + * + * Startup Code (reset vector) + * relocate armboot to ram + * setup stack + * jump to second stage + * + ************************************************************************* + */ + +_TEXT_BASE: + .word TEXT_BASE + +/* + * rtthread kernel start and end + * which are defined in linker script + */ +.globl _rtthread_start +_rtthread_start: + .word _start + +.globl _rtthread_end +_rtthread_end: + .word _end + +/* + * rtthread bss start and end which are defined in linker script + */ +.globl _bss_start +_bss_start: + .word __bss_start + +.globl _bss_end +_bss_end: + .word __bss_end + +/* IRQ stack memory (calculated at run-time) */ +.globl IRQ_STACK_START +IRQ_STACK_START: + .word _irq_stack_start + 1024 + +.globl FIQ_STACK_START +FIQ_STACK_START: + .word _fiq_stack_start + 1024 + +.globl UNDEFINED_STACK_START +UNDEFINED_STACK_START: + .word _undefined_stack_start + CONFIG_STACKSIZE + +.globl ABORT_STACK_START +ABORT_STACK_START: + .word _abort_stack_start + CONFIG_STACKSIZE + +.globl _STACK_START +_STACK_START: + .word _svc_stack_start + 1024 + +/* ----------------------------------entry------------------------------*/ +reset: + + /* set the cpu to SVC32 mode */ + mrs r0,cpsr + bic r0,r0,#MODEMASK + orr r0,r0,#SVCMODE + msr cpsr,r0 + + /* mask all IRQs by clearing all bits in the INTMRs */ + mov r1, $0 + ldr r0, =EINT_ENABLE0 + str r1, [r0] + ldr r0, =EINT_ENABLE1 + str r1, [r0] +#if 0 + /* set interrupt vector */ + ldr r0, _TEXT_BASE + mov r1, #0x00 + add r2, r0, #0x40 /* size, 32bytes */ + +copy_loop: + ldmia r0!, {r3-r10} /* copy from source address [r0] */ + stmia r1!, {r3-r10} /* copy to target address [r1] */ + cmp r0, r2 /* until source end addreee [r2] */ + ble copy_loop +#endif + + /* setup stack */ + bl stack_setup + + /* clear .bss */ + mov r0,#0 /* get a zero */ + ldr r1,=__bss_start /* bss start */ + ldr r2,=__bss_end /* bss end */ + +bss_loop: + cmp r1,r2 /* check if data to clear */ + strlo r0,[r1],#4 /* clear 4 bytes */ + blo bss_loop /* loop until done */ + + /* call C++ constructors of global objects */ + ldr r0, =__ctors_start__ + ldr r1, =__ctors_end__ + +ctor_loop: + cmp r0, r1 + beq ctor_end + ldr r2, [r0], #4 + stmfd sp!, {r0-r1} + mov lr, pc + bx r2 + ldmfd sp!, {r0-r1} + b ctor_loop + +ctor_end: + + /* start RT-Thread Kernel */ + ldr pc, _rtthread_startup + +_rtthread_startup: + .word rtthread_startup +#if defined (__FLASH_BUILD__) +_load_address: + .word ROM_BASE + _TEXT_BASE +#else +_load_address: + .word RAM_BASE + _TEXT_BASE +#endif + + +/* + ************************************************************************* + * + * Interrupt handling + * + ************************************************************************* + */ + +.macro push_exp_reg + sub sp, sp, #S_FRAME_SIZE @/* Sizeof(struct rt_hw_stack) */ + stmib sp, {r0 - r12} @/* Calling r0-r12 */ + mov r0, sp + mrs r6, spsr @/* Save CPSR */ + str lr, [r0, #S_PC] @/* Push PC */ + str r6, [r0, #S_CPSR] @/* Push CPSR */ + @ switch to SVC mode with no interrupt + msr cpsr_c, #I_BIT|F_BIT|SVCMODE + str sp, [r0, #S_SP] @/* Save calling SP */ + str lr, [r0, #S_LR] @/* Save calling PC */ +.endm +/* exception handlers */ + .align 5 +vector_undef: + push_exp_reg + bl rt_hw_trap_udef + + .align 5 +vector_swi: + push_exp_reg + bl rt_hw_trap_swi + + .align 5 +vector_pabt: + push_exp_reg + bl rt_hw_trap_pabt + + .align 5 +vector_dabt: + push_exp_reg + bl rt_hw_trap_dabt + + .align 5 +vector_resv: + push_exp_reg + bl rt_hw_trap_resv + +.globl rt_interrupt_enter +.globl rt_interrupt_leave +.globl rt_thread_switch_interrupt_flag +.globl rt_interrupt_from_thread +.globl rt_interrupt_to_thread +vector_irq: + stmfd sp!, {r0-r12,lr} + + bl rt_interrupt_enter + bl rt_hw_trap_irq + bl rt_interrupt_leave + + + @ if rt_thread_switch_interrupt_flag set, jump to + @ rt_hw_context_switch_interrupt_do and don't return + ldr r0, =rt_thread_switch_interrupt_flag + ldr r1, [r0] + cmp r1, #1 + beq rt_hw_context_switch_interrupt_do + + ldmfd sp!, {r0-r12,lr} + subs pc, lr, #4 + + .align 5 +vector_fiq: + stmfd sp!,{r0-r7,lr} + bl rt_hw_trap_fiq + ldmfd sp!,{r0-r7,lr} + subs pc,lr,#4 + +rt_hw_context_switch_interrupt_do: + mov r1, #0 @ clear flag + str r1, [r0] + + ldmfd sp!, {r0-r12,lr}@ reload saved registers + stmfd sp, {r0-r2} @ save r0-r2 + + mrs r0, spsr @ get cpsr of interrupt thread + + sub r1, sp, #4*3 + sub r2, lr, #4 @ save old task's pc to r2 + + @ switch to SVC mode with no interrupt + msr cpsr_c, #I_BIT|F_BIT|SVCMODE + + stmfd sp!, {r2} @ push old task's pc + stmfd sp!, {r3-r12,lr}@ push old task's lr,r12-r4 + ldmfd r1, {r1-r3} @ restore r0-r2 of the interrupt thread + stmfd sp!, {r1-r3} @ push old task's r0-r2 + stmfd sp!, {r0} @ push old task's cpsr + + ldr r4, =rt_interrupt_from_thread + ldr r5, [r4] + str sp, [r5] @ store sp in preempted tasks's TCB + + ldr r6, =rt_interrupt_to_thread + ldr r6, [r6] + ldr sp, [r6] @ get new task's stack pointer + + ldmfd sp!, {r4} @ pop new task's cpsr to spsr + msr spsr_cxsf, r4 + + ldmfd sp!, {r0-r12,lr,pc}^ @ pop new task's r0-r12,lr & pc, copy spsr to cpsr + + +stack_setup: + mrs r0, cpsr + bic r0, r0, #MODEMASK + orr r1, r0, #UNDEFMODE|NOINT + msr cpsr_cxsf, r1 /* undef mode */ + ldr sp, UNDEFINED_STACK_START + + orr r1,r0,#ABORTMODE|NOINT + msr cpsr_cxsf,r1 /* abort mode */ + ldr sp, ABORT_STACK_START + + orr r1,r0,#IRQMODE|NOINT + msr cpsr_cxsf,r1 /* IRQ mode */ + ldr sp, IRQ_STACK_START + + orr r1,r0,#FIQMODE|NOINT + msr cpsr_cxsf,r1 /* FIQ mode */ + ldr sp, FIQ_STACK_START + + bic r0,r0,#MODEMASK + orr r1,r0,#SVCMODE|NOINT + msr cpsr_cxsf,r1 /* SVC mode */ + + ldr sp, _STACK_START + + /* USER mode is not initialized. */ + bx lr /* The LR register may be not valid for the mode changes.*/ + +/*/*}*/ + + diff --git a/bsp/dm365/platform/system_clock.c b/bsp/dm365/platform/system_clock.c new file mode 100644 index 0000000000000000000000000000000000000000..6fd2a8d991524efe3f395f392bd39406a1290a98 --- /dev/null +++ b/bsp/dm365/platform/system_clock.c @@ -0,0 +1,37 @@ +/* + * File : system_clock.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + + +#include +#include "dm36x.h" + + +/** + * @brief System Clock Configuration + */ +void rt_hw_clock_init(void) +{ + +} + diff --git a/bsp/dm365/platform/trap.c b/bsp/dm365/platform/trap.c new file mode 100644 index 0000000000000000000000000000000000000000..169e4da40b760a5511eb4a59566b6af905a0801f --- /dev/null +++ b/bsp/dm365/platform/trap.c @@ -0,0 +1,200 @@ +/* + * File : trap.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2010-11-13 weety first version + */ + + +#include +#include + +#include "dm36x.h" + +/** + * @addtogroup DM36X + */ +/*@{*/ + +extern struct rt_thread *rt_current_thread; +#ifdef RT_USING_FINSH +extern long list_thread(void); +#endif + +/** + * this function will show registers of CPU + * + * @param regs the registers point + */ + +void rt_hw_show_register (struct rt_hw_register *regs) +{ + rt_kprintf("Execption:\n"); + rt_kprintf("r00:0x%08x r01:0x%08x r02:0x%08x r03:0x%08x\n", regs->r0, regs->r1, regs->r2, regs->r3); + rt_kprintf("r04:0x%08x r05:0x%08x r06:0x%08x r07:0x%08x\n", regs->r4, regs->r5, regs->r6, regs->r7); + rt_kprintf("r08:0x%08x r09:0x%08x r10:0x%08x\n", regs->r8, regs->r9, regs->r10); + rt_kprintf("fp :0x%08x ip :0x%08x\n", regs->fp, regs->ip); + rt_kprintf("sp :0x%08x lr :0x%08x pc :0x%08x\n", regs->sp, regs->lr, regs->pc); + rt_kprintf("cpsr:0x%08x\n", regs->cpsr); +} + +/** + * When ARM7TDMI comes across an instruction which it cannot handle, + * it takes the undefined instruction trap. + * + * @param regs system registers + * + * @note never invoke this function in application + */ +void rt_hw_trap_udef(struct rt_hw_register *regs) +{ + rt_hw_show_register(regs); + + rt_kprintf("undefined instruction\n"); + rt_kprintf("thread - %s stack:\n", rt_current_thread->name); + +#ifdef RT_USING_FINSH + list_thread(); +#endif + rt_hw_cpu_shutdown(); +} + +/** + * The software interrupt instruction (SWI) is used for entering + * Supervisor mode, usually to request a particular supervisor + * function. + * + * @param regs system registers + * + * @note never invoke this function in application + */ +void rt_hw_trap_swi(struct rt_hw_register *regs) +{ + rt_hw_show_register(regs); + + rt_kprintf("software interrupt\n"); + rt_hw_cpu_shutdown(); +} + +/** + * An abort indicates that the current memory access cannot be completed, + * which occurs during an instruction prefetch. + * + * @param regs system registers + * + * @note never invoke this function in application + */ +void rt_hw_trap_pabt(struct rt_hw_register *regs) +{ + rt_hw_show_register(regs); + + rt_kprintf("prefetch abort\n"); + rt_kprintf("thread - %s stack:\n", rt_current_thread->name); + +#ifdef RT_USING_FINSH + list_thread(); +#endif + rt_hw_cpu_shutdown(); +} + +/** + * An abort indicates that the current memory access cannot be completed, + * which occurs during a data access. + * + * @param regs system registers + * + * @note never invoke this function in application + */ +void rt_hw_trap_dabt(struct rt_hw_register *regs) +{ + rt_uint32_t fault_addr; + rt_uint32_t fault_status; + asm volatile ("mrc p15, 0, %0, c6, c0, 0" + : + :"r"(fault_addr) + :"cc"); + rt_kprintf("unhandler access to 0x%08x\n", fault_addr); + + /* read DFSR */ + asm volatile ("MRC p15, 0, %0, c5, c0, 0" + : + :"r"(fault_status) + :"cc"); + rt_kprintf("fault status 0x%08x\n", fault_status); + + rt_hw_show_register(regs); + + rt_kprintf("data abort\n"); + rt_kprintf("thread - %s stack:\n", rt_current_thread->name); + +#ifdef RT_USING_FINSH + list_thread(); +#endif + rt_hw_cpu_shutdown(); +} + +/** + * Normally, system will never reach here + * + * @param regs system registers + * + * @note never invoke this function in application + */ +void rt_hw_trap_resv(struct rt_hw_register *regs) +{ + rt_kprintf("not used\n"); + rt_hw_show_register(regs); + rt_hw_cpu_shutdown(); +} + +extern struct rt_irq_desc irq_desc[]; + + +void rt_hw_trap_irq() +{ + rt_isr_handler_t isr_func; + rt_uint32_t val, irq, mask; + void *param; + + /* get irq number */ + val = readl(DAVINCI_ARM_INTC_BASE+0x14) - readl(DAVINCI_ARM_INTC_BASE+0x24); + irq = (val >> 2) - 1; + /* clear pending register */ + mask = 1 << (irq & 0x1f); + if (irq > 31) + writel(mask, DAVINCI_ARM_INTC_BASE+0x0c); //IRQ1 + else + writel(mask, DAVINCI_ARM_INTC_BASE+0x08); //IRQ0 + + /* get interrupt service routine */ + isr_func = irq_desc[irq].handler; + param = irq_desc[irq].param; + + /* turn to interrupt service routine */ + isr_func(irq, param); + irq_desc[irq].counter++; +} + +void rt_hw_trap_fiq() +{ + rt_kprintf("fast interrupt request\n"); +} + +/*@}*/ diff --git a/bsp/dm365/rtconfig.h b/bsp/dm365/rtconfig.h new file mode 100644 index 0000000000000000000000000000000000000000..b1ed235a006b9dcf8ad76344a8cd1029ec0f9fb7 --- /dev/null +++ b/bsp/dm365/rtconfig.h @@ -0,0 +1,271 @@ +/* RT-Thread config file */ +#ifndef __RTTHREAD_CFG_H__ +#define __RTTHREAD_CFG_H__ + +/* RT_NAME_MAX*/ +#define RT_NAME_MAX 32 + +/* RT_ALIGN_SIZE*/ +#define RT_ALIGN_SIZE 4 + +/* PRIORITY_MAX */ +#define RT_THREAD_PRIORITY_MAX 256 + +/* Tick per Second */ +#define RT_TICK_PER_SECOND 100 + +/* SECTION: RT_DEBUG */ +/* Thread Debug */ +#define RT_DEBUG +#define SCHEDULER_DEBUG +/* #define RT_THREAD_DEBUG */ + +#define RT_USING_OVERFLOW_CHECK + +/* Using Hook */ +#define RT_USING_HOOK + +/* Using Software Timer */ +#define RT_USING_TIMER_SOFT +#define RT_TIMER_THREAD_PRIO 8 +#define RT_TIMER_THREAD_STACK_SIZE 512 +#define RT_TIMER_TICK_PER_SECOND 10 + +#define IDLE_THREAD_STACK_SIZE 1024 + + +/* SECTION: IPC */ +/* Using Semaphore */ +#define RT_USING_SEMAPHORE + +/* Using Mutex */ +#define RT_USING_MUTEX + +/* Using Event */ +#define RT_USING_EVENT + +/* Using MailBox */ +#define RT_USING_MAILBOX + +/* Using Message Queue */ +#define RT_USING_MESSAGEQUEUE + +/* SECTION: Memory Management */ +/* Using Memory Pool Management*/ +#define RT_USING_MEMPOOL + +/* Using Dynamic Heap Management */ +#define RT_USING_HEAP + +/* Using Small MM */ +/* #define RT_USING_SMALL_MEM */ + +/* Using SLAB Allocator */ +#define RT_USING_SLAB + +/* SECTION: Device System */ +/* Using Device System */ +#define RT_USING_DEVICE +#define RT_USING_DEVICE_IPC + +/* Using Module System */ +#define RT_USING_MODULE +#define RT_USING_LIBDL + +/* Interrupt debug */ +#define RT_USING_INTERRUPT_INFO + +#define RT_USING_SERIAL +/* SECTION: Console options */ +#define RT_USING_CONSOLE +/* the buffer size of console */ +#define RT_CONSOLEBUF_SIZE 1024 +#define RT_CONSOLE_DEVICE_NAME "uart0" + +/* SECTION: finsh, a C-Express shell */ +/* Using FinSH as Shell*/ +#define RT_USING_FINSH +/* Using symbol table */ +#define FINSH_USING_SYMTAB +#define FINSH_USING_DESCRIPTION +#define FINSH_THREAD_STACK_SIZE 4096 +#define FINSH_USING_HISTORY 1 +#define FINSH_USING_MSH + +/* SECTION: the runtime libc library */ +/* the runtime libc library */ +#define RT_USING_LIBC +#define RT_USING_PTHREADS + +/* SECTION: C++ support */ +/* Using C++ support */ +/* #define RT_USING_CPLUSPLUS */ + +/* SECTION: Device filesystem support */ +/* using DFS support */ +#define RT_USING_DFS +#define RT_USING_DFS_ELMFAT +/* use long file name feature */ +#define RT_DFS_ELM_USE_LFN 2 +#define RT_DFS_ELM_REENTRANT +/* define OEM code page */ +#define RT_DFS_ELM_CODE_PAGE 936 +/* Using OEM code page file */ +// #define RT_DFS_ELM_CODE_PAGE_FILE +/* the max number of file length */ +#define RT_DFS_ELM_MAX_LFN 128 +/* #define RT_USING_DFS_YAFFS2 */ +#define RT_USING_DFS_DEVFS + +#define RT_USING_DFS_NFS +#define RT_NFS_HOST_EXPORT "192.168.1.5:/" + +#define DFS_USING_WORKDIR + +/* the max number of mounted filesystem */ +#define DFS_FILESYSTEMS_MAX 4 +/* the max number of opened files */ +#define DFS_FD_MAX 16 +/* the max number of cached sector */ +#define DFS_CACHE_MAX_NUM 4 + +/* Enable freemodbus protocol stack*/ +/* #define RT_USING_MODBUS */ + +/* USING CPU FFS */ +#define RT_USING_CPU_FFS + +/* MMU pte item size defined */ +#define RT_MMU_PTE_SIZE 4096 + +#define RT_USING_GPIO + +#define RT_USING_I2C + +#define RT_USING_SPI + +#define RT_USING_SDIO +#define RT_MMCSD_DBG + +/* SECTION: lwip, a lightweight TCP/IP protocol stack */ +/* Using lightweight TCP/IP protocol stack */ +#define RT_USING_LWIP + +/* Trace LwIP protocol */ +/* #define RT_LWIP_DEBUG */ + +//#define RT_LWIP_USING_RT_MEM +//#define RT_LWIP_REASSEMBLY_FRAG + +#define SO_REUSE 1 + +#define RT_LWIP_DNS + +/* Enable ICMP protocol */ +#define RT_LWIP_ICMP + +/* Enable IGMP protocol */ +#define RT_LWIP_IGMP + +/* Enable UDP protocol */ +#define RT_LWIP_UDP + +/* Enable TCP protocol */ +#define RT_LWIP_TCP + +/* the number of simulatenously active TCP connections*/ +#define RT_LWIP_TCP_PCB_NUM 32 + +/* TCP sender buffer space */ +#define RT_LWIP_TCP_SND_BUF 1460*10 + +/* TCP receive window. */ +#define RT_LWIP_TCP_WND 1460*8 + +/* Enable SNMP protocol */ +/* #define RT_LWIP_SNMP */ + +/* Using DHCP */ +/* #define RT_LWIP_DHCP */ + +/* ip address of target */ +#define RT_LWIP_IPADDR0 192 +#define RT_LWIP_IPADDR1 168 +#define RT_LWIP_IPADDR2 1 +#define RT_LWIP_IPADDR3 30 + +/* gateway address of target */ +#define RT_LWIP_GWADDR0 192 +#define RT_LWIP_GWADDR1 168 +#define RT_LWIP_GWADDR2 1 +#define RT_LWIP_GWADDR3 1 + +/* mask address of target */ +#define RT_LWIP_MSKADDR0 255 +#define RT_LWIP_MSKADDR1 255 +#define RT_LWIP_MSKADDR2 255 +#define RT_LWIP_MSKADDR3 0 + +/* the number of blocks for pbuf */ +#define RT_LWIP_PBUF_NUM 16 + +/* the number of simultaneously queued TCP */ +#define RT_LWIP_TCP_SEG_NUM 40 + +/* thread priority of tcpip thread */ +#define RT_LWIP_TCPTHREAD_PRIORITY 128 + +/* mail box size of tcpip thread to wait for */ +#define RT_LWIP_TCPTHREAD_MBOX_SIZE 32 + +/* thread stack size of tcpip thread */ +#define RT_LWIP_TCPTHREAD_STACKSIZE 4096 + +/* thread priority of ethnetif thread */ +#define RT_LWIP_ETHTHREAD_PRIORITY 144 + +/* mail box size of ethnetif thread to wait for */ +#define RT_LWIP_ETHTHREAD_MBOX_SIZE 32 + +/* thread stack size of ethnetif thread */ +#define RT_LWIP_ETHTHREAD_STACKSIZE 1024 + +/* SECTION: RTGUI support */ +/* using RTGUI support */ +/* #define RT_USING_RTGUI */ + +/* name length of RTGUI object */ +//#define RTGUI_NAME_MAX 16 +/* support 16 weight font */ +//#define RTGUI_USING_FONT16 +/* support 16 weight font */ +//#define RTGUI_USING_FONT12 +/* support Chinese font */ +//#define RTGUI_USING_FONTHZ +/* use DFS as file interface */ +//#define RTGUI_USING_DFS_FILERW +/* use font file as Chinese font */ +/* #define RTGUI_USING_HZ_FILE */ +/* use Chinese bitmap font */ +//#define RTGUI_USING_HZ_BMP +/* use small size in RTGUI */ +/* #define RTGUI_USING_SMALL_SIZE */ +/* use mouse cursor */ +/* #define RTGUI_USING_MOUSE_CURSOR */ + +/* SECTION: FTK support */ +/* using FTK support */ +/* #define RT_USING_FTK */ + +/* + * Note on FTK: + * + * FTK depends : + * #define RT_USING_NEWLIB + * #define DFS_USING_WORKDIR + * + * And the maximal length must great than 64 + * #define RT_DFS_ELM_MAX_LFN 128 + */ + +#endif diff --git a/bsp/dm365/rtconfig.py b/bsp/dm365/rtconfig.py new file mode 100644 index 0000000000000000000000000000000000000000..bf64260759819f3332c9d5dd66bc218556895f63 --- /dev/null +++ b/bsp/dm365/rtconfig.py @@ -0,0 +1,84 @@ +import os +# toolchains options +ARCH = 'arm' +CPU = 'dm36x' +TextBase = '0x80000000' + +CROSS_TOOL = 'gcc' + +if os.getenv('RTT_CC'): + CROSS_TOOL = os.getenv('RTT_CC') + +if CROSS_TOOL == 'gcc': + PLATFORM = 'gcc' + #EXEC_PATH = '/opt/arm-2010q1/bin' + EXEC_PATH = r'D:\arm-2013.11\bin' +elif CROSS_TOOL == 'keil': + PLATFORM = 'armcc' + EXEC_PATH = 'E:/Keil' +BUILD = 'release' + +if PLATFORM == 'gcc': + # toolchains + PREFIX = 'arm-none-eabi-' + CC = PREFIX + 'gcc' + AS = PREFIX + 'gcc' + AR = PREFIX + 'ar' + LINK = PREFIX + 'gcc' + TARGET_EXT = 'axf' + SIZE = PREFIX + 'size' + OBJDUMP = PREFIX + 'objdump' + OBJCPY = PREFIX + 'objcopy' + + DEVICE = ' -mcpu=arm926ej-s' + CFLAGS = DEVICE + AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp' + ' -DTEXT_BASE=' + TextBase + LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread_dm365.map,-cref,-u,_start -T dm365_ram.ld' + ' -Ttext ' + TextBase + + CPATH = '' + LPATH = '' + + if BUILD == 'debug': + CFLAGS += ' -O0 -gdwarf-2' + AFLAGS += ' -gdwarf-2' + else: + CFLAGS += ' -O2' + + POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n' + +elif PLATFORM == 'armcc': + # toolchains + CC = 'armcc' + AS = 'armasm' + AR = 'armar' + LINK = 'armlink' + TARGET_EXT = 'axf' + + DEVICE = ' --device DARMSS9' + CFLAGS = DEVICE + ' --apcs=interwork --diag_suppress=870' + AFLAGS = DEVICE + LFLAGS = DEVICE + ' --strict --info sizes --info totals --info unused --info veneers --list rtthread-mini2440.map --ro-base 0x30000000 --entry Entry_Point --first Entry_Point' + + CFLAGS += ' -I"' + EXEC_PATH + '/ARM/RV31/INC"' + LFLAGS += ' --libpath "' + EXEC_PATH + '/ARM/RV31/LIB"' + + EXEC_PATH += '/arm/bin40/' + + if BUILD == 'debug': + CFLAGS += ' -g -O0' + AFLAGS += ' -g' + else: + CFLAGS += ' -O2' + + POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET' + +elif PLATFORM == 'iar': + # toolchains + CC = 'armcc' + AS = 'armasm' + AR = 'armar' + LINK = 'armlink' + + CFLAGS = '' + AFLAGS = '' + LFLAGS = '' diff --git a/components/drivers/include/drivers/spi.h b/components/drivers/include/drivers/spi.h index cfa4b73ca38a4a26f0b088d06c8716dad3a36334..f76b329cabd296a4c662d3d78166756b7cff7156 100644 --- a/components/drivers/include/drivers/spi.h +++ b/components/drivers/include/drivers/spi.h @@ -59,6 +59,11 @@ extern "C"{ #define RT_SPI_MODE_MASK (RT_SPI_CPHA | RT_SPI_CPOL | RT_SPI_MSB) +#define RT_SPI_CS_HIGH (1<<4) /* Chipselect active high */ +#define RT_SPI_NO_CS (1<<5) /* No chipselect */ +#define RT_SPI_3WIRE (1<<6) /* SI/SO pin shared */ +#define RT_SPI_READY (1<<7) /* Slave pulls low to pause */ + /** * SPI message structure */ diff --git a/libcpu/arm/dm36x/context_gcc.S b/libcpu/arm/dm36x/context_gcc.S new file mode 100644 index 0000000000000000000000000000000000000000..cfada09bef7406156a0862b6d256e86d86a9ba9f --- /dev/null +++ b/libcpu/arm/dm36x/context_gcc.S @@ -0,0 +1,109 @@ +/* + * File : context.S + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety + */ + +/*! + * \addtogroup DM36X + */ +/*@{*/ + +#define NOINT 0xc0 + + +/* + * rt_base_t rt_hw_interrupt_disable(); + */ +.globl rt_hw_interrupt_disable +rt_hw_interrupt_disable: + mrs r0, cpsr + orr r1, r0, #NOINT + msr cpsr_c, r1 + bx lr + +/* + * void rt_hw_interrupt_enable(rt_base_t level); + */ +.globl rt_hw_interrupt_enable +rt_hw_interrupt_enable: + msr cpsr, r0 + bx lr + +/* + * void rt_hw_context_switch(rt_uint32 from, rt_uint32 to); + * r0 --> from + * r1 --> to + */ +.globl rt_hw_context_switch +rt_hw_context_switch: + stmfd sp!, {lr} @ push pc (lr should be pushed in place of PC) + stmfd sp!, {r0-r12, lr} @ push lr & register file + + mrs r4, cpsr + tst lr, #0x01 + orrne r4, r4, #0x20 @ it's thumb code + + stmfd sp!, {r4} @ push cpsr + + str sp, [r0] @ store sp in preempted tasks TCB + ldr sp, [r1] @ get new task stack pointer + + ldmfd sp!, {r4} @ pop new task cpsr to spsr + msr spsr_cxsf, r4 +_do_switch: + ldmfd sp!, {r0-r12, lr, pc}^ @ pop new task r0-r12, lr & pc, copy spsr to cpsr + +/* + * void rt_hw_context_switch_to(rt_uint32 to); + * r0 --> to + */ +.globl rt_hw_context_switch_to +rt_hw_context_switch_to: + ldr sp, [r0] @ get new task stack pointer + + ldmfd sp!, {r4} @ pop new task spsr + msr spsr_cxsf, r4 + + bic r4, r4, #0x20 @ must be ARM mode + msr cpsr_cxsf, r4 + ldmfd sp!, {r0-r12, lr, pc}^ @ pop new task r0-r12, lr & pc + +/* + * void rt_hw_context_switch_interrupt(rt_uint32 from, rt_uint32 to); + */ +.globl rt_thread_switch_interrupt_flag +.globl rt_interrupt_from_thread +.globl rt_interrupt_to_thread +.globl rt_hw_context_switch_interrupt +rt_hw_context_switch_interrupt: + ldr r2, =rt_thread_switch_interrupt_flag + ldr r3, [r2] + cmp r3, #1 + beq _reswitch + mov r3, #1 @ set rt_thread_switch_interrupt_flag to 1 + str r3, [r2] + ldr r2, =rt_interrupt_from_thread @ set rt_interrupt_from_thread + str r0, [r2] +_reswitch: + ldr r2, =rt_interrupt_to_thread @ set rt_interrupt_to_thread + str r1, [r2] + bx lr diff --git a/libcpu/arm/dm36x/context_rvds.S b/libcpu/arm/dm36x/context_rvds.S new file mode 100644 index 0000000000000000000000000000000000000000..631da833720d111b7c7cbcfbd10199cf69177784 --- /dev/null +++ b/libcpu/arm/dm36x/context_rvds.S @@ -0,0 +1,117 @@ +;/* +; * File : context_rvds.S +; * This file is part of RT-Thread RTOS +; * COPYRIGHT (C) 2006, RT-Thread Development Team +; * +; * This program is free software; you can redistribute it and/or modify +; * it under the terms of the GNU General Public License as published by +; * the Free Software Foundation; either version 2 of the License, or +; * (at your option) any later version. +; * +; * This program is distributed in the hope that it will be useful, +; * but WITHOUT ANY WARRANTY; without even the implied warranty of +; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +; * GNU General Public License for more details. +; * +; * You should have received a copy of the GNU General Public License along +; * with this program; if not, write to the Free Software Foundation, Inc., +; * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +; * +; * Change Logs: +; * Date Author Notes +; * 2011-08-14 weety copy from mini2440 +; */ + +NOINT EQU 0xc0 ; disable interrupt in psr + + AREA |.text|, CODE, READONLY, ALIGN=2 + ARM + REQUIRE8 + PRESERVE8 + +;/* +; * rt_base_t rt_hw_interrupt_disable(); +; */ +rt_hw_interrupt_disable PROC + EXPORT rt_hw_interrupt_disable + MRS r0, cpsr + ORR r1, r0, #NOINT + MSR cpsr_c, r1 + BX lr + ENDP + +;/* +; * void rt_hw_interrupt_enable(rt_base_t level); +; */ +rt_hw_interrupt_enable PROC + EXPORT rt_hw_interrupt_enable + MSR cpsr_c, r0 + BX lr + ENDP + +;/* +; * void rt_hw_context_switch(rt_uint32 from, rt_uint32 to); +; * r0 --> from +; * r1 --> to +; */ +rt_hw_context_switch PROC + EXPORT rt_hw_context_switch + STMFD sp!, {lr} ; push pc (lr should be pushed in place of PC) + STMFD sp!, {r0-r12, lr} ; push lr & register file + + MRS r4, cpsr + STMFD sp!, {r4} ; push cpsr + MRS r4, spsr + STMFD sp!, {r4} ; push spsr + + STR sp, [r0] ; store sp in preempted tasks TCB + LDR sp, [r1] ; get new task stack pointer + + LDMFD sp!, {r4} ; pop new task spsr + MSR spsr_cxsf, r4 + LDMFD sp!, {r4} ; pop new task cpsr + MSR spsr_cxsf, r4 + + LDMFD sp!, {r0-r12, lr, pc}^ ; pop new task r0-r12, lr & pc + ENDP + +;/* +; * void rt_hw_context_switch_to(rt_uint32 to); +; * r0 --> to +; */ +rt_hw_context_switch_to PROC + EXPORT rt_hw_context_switch_to + LDR sp, [r0] ; get new task stack pointer + + LDMFD sp!, {r4} ; pop new task spsr + MSR spsr_cxsf, r4 + LDMFD sp!, {r4} ; pop new task cpsr + MSR cpsr_cxsf, r4 + + LDMFD sp!, {r0-r12, lr, pc} ; pop new task r0-r12, lr & pc + ENDP + +;/* +; * void rt_hw_context_switch_interrupt(rt_uint32 from, rt_uint32 to); +; */ + IMPORT rt_thread_switch_interrupt_flag + IMPORT rt_interrupt_from_thread + IMPORT rt_interrupt_to_thread + +rt_hw_context_switch_interrupt PROC + EXPORT rt_hw_context_switch_interrupt + LDR r2, =rt_thread_switch_interrupt_flag + LDR r3, [r2] + CMP r3, #1 + BEQ _reswitch + MOV r3, #1 ; set rt_thread_switch_interrupt_flag to 1 + STR r3, [r2] + LDR r2, =rt_interrupt_from_thread ; set rt_interrupt_from_thread + STR r0, [r2] +_reswitch + LDR r2, =rt_interrupt_to_thread ; set rt_interrupt_to_thread + STR r1, [r2] + BX lr + ENDP + + END diff --git a/libcpu/arm/dm36x/cpuport.c b/libcpu/arm/dm36x/cpuport.c new file mode 100644 index 0000000000000000000000000000000000000000..bf012b10fad2533bad76c5851b6bab624954a9cd --- /dev/null +++ b/libcpu/arm/dm36x/cpuport.c @@ -0,0 +1,246 @@ +/* + * File : cpu.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Develop Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety first version + */ + +#include +#include + +#define ICACHE_MASK (rt_uint32_t)(1 << 12) +#define DCACHE_MASK (rt_uint32_t)(1 << 2) + +extern void machine_reset(void); +extern void machine_shutdown(void); + +#ifdef __GNUC__ +rt_inline rt_uint32_t cp15_rd(void) +{ + rt_uint32_t i; + + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + return i; +} + +rt_inline void cache_enable(rt_uint32_t bit) +{ + __asm__ __volatile__( \ + "mrc p15,0,r0,c1,c0,0\n\t" \ + "orr r0,r0,%0\n\t" \ + "mcr p15,0,r0,c1,c0,0" \ + : \ + :"r" (bit) \ + :"memory"); +} + +rt_inline void cache_disable(rt_uint32_t bit) +{ + __asm__ __volatile__( \ + "mrc p15,0,r0,c1,c0,0\n\t" \ + "bic r0,r0,%0\n\t" \ + "mcr p15,0,r0,c1,c0,0" \ + : \ + :"r" (bit) \ + :"memory"); +} +#endif + +#ifdef __CC_ARM +rt_inline rt_uint32_t cp15_rd(void) +{ + rt_uint32_t i; + + __asm + { + mrc p15, 0, i, c1, c0, 0 + } + + return i; +} + +rt_inline void cache_enable(rt_uint32_t bit) +{ + rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + orr value, value, bit + mcr p15, 0, value, c1, c0, 0 + } +} + +rt_inline void cache_disable(rt_uint32_t bit) +{ + rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + bic value, value, bit + mcr p15, 0, value, c1, c0, 0 + } +} +#endif + +/** + * enable I-Cache + * + */ +void rt_hw_cpu_icache_enable() +{ + cache_enable(ICACHE_MASK); +} + +/** + * disable I-Cache + * + */ +void rt_hw_cpu_icache_disable() +{ + cache_disable(ICACHE_MASK); +} + +/** + * return the status of I-Cache + * + */ +rt_base_t rt_hw_cpu_icache_status() +{ + return (cp15_rd() & ICACHE_MASK); +} + +/** + * enable D-Cache + * + */ +void rt_hw_cpu_dcache_enable() +{ + cache_enable(DCACHE_MASK); +} + +/** + * disable D-Cache + * + */ +void rt_hw_cpu_dcache_disable() +{ + cache_disable(DCACHE_MASK); +} + +/** + * return the status of D-Cache + * + */ +rt_base_t rt_hw_cpu_dcache_status() +{ + return (cp15_rd() & DCACHE_MASK); +} + +/** + * reset cpu by dog's time-out + * + */ +void rt_hw_cpu_reset() +{ + + rt_kprintf("Restarting system...\n"); + machine_reset(); + + while(1); /* loop forever and wait for reset to happen */ + + /* NEVER REACHED */ +} + +/** + * shutdown CPU + * + */ +void rt_hw_cpu_shutdown() +{ + rt_uint32_t level; + rt_kprintf("shutdown...\n"); + + level = rt_hw_interrupt_disable(); + machine_shutdown(); + while (level) + { + RT_ASSERT(0); + } +} + +#ifdef RT_USING_CPU_FFS +/** + * This function finds the first bit set (beginning with the least significant bit) + * in value and return the index of that bit. + * + * Bits are numbered starting at 1 (the least significant bit). A return value of + * zero from any of these functions means that the argument was zero. + * + * @return return the index of the first bit set. If value is 0, then this function + * shall return 0. + */ +#if defined(__CC_ARM) +int __rt_ffs(int value) +{ + register rt_uint32_t x; + + if (value == 0) + return value; + + __asm + { + rsb x, value, #0 + and x, x, value + clz x, x + rsb x, x, #32 + } + + return x; +} +#elif defined(__IAR_SYSTEMS_ICC__) +int __rt_ffs(int value) +{ + if (value == 0) + return value; + + __ASM("RSB r4, r0, #0"); + __ASM("AND r4, r4, r0"); + __ASM("CLZ r4, r4"); + __ASM("RSB r0, r4, #32"); +} +#elif defined(__GNUC__) +int __rt_ffs(int value) +{ + if (value == 0) + return value; + + value &= (-value); + asm ("clz %0, %1": "=r"(value) :"r"(value)); + + return (32 - value); +} +#endif + +#endif + + +/*@}*/ diff --git a/libcpu/arm/dm36x/mmu.c b/libcpu/arm/dm36x/mmu.c new file mode 100644 index 0000000000000000000000000000000000000000..643f6bc3de3d8147ef57223ecee6f1150eeb1dc5 --- /dev/null +++ b/libcpu/arm/dm36x/mmu.c @@ -0,0 +1,560 @@ +/* + * File : mmu.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + */ + +#include "mmu.h" + +#ifdef __CC_ARM +void mmu_setttbase(rt_uint32_t i) +{ + register rt_uint32_t value; + + /* Invalidates all TLBs.Domain access is selected as + * client by configuring domain access register, + * in that case access controlled by permission value + * set by page table entry + */ + value = 0; + __asm + { + mcr p15, 0, value, c8, c7, 0 + } + + value = 0x55555555; + __asm + { + mcr p15, 0, value, c3, c0, 0 + mcr p15, 0, i, c2, c0, 0 + } +} + +void mmu_set_domain(rt_uint32_t i) +{ + __asm + { + mcr p15,0, i, c3, c0, 0 + } +} + +void mmu_enable() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + orr value, value, #0x01 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_disable() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + bic value, value, #0x01 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_enable_icache() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + orr value, value, #0x1000 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_enable_dcache() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + orr value, value, #0x04 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_disable_icache() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + bic value, value, #0x1000 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_disable_dcache() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + bic value, value, #0x04 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_enable_alignfault() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + orr value, value, #0x02 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_disable_alignfault() +{ + register rt_uint32_t value; + + __asm + { + mrc p15, 0, value, c1, c0, 0 + bic value, value, #0x02 + mcr p15, 0, value, c1, c0, 0 + } +} + +void mmu_clean_invalidated_cache_index(int index) +{ + __asm + { + mcr p15, 0, index, c7, c14, 2 + } +} + +void mmu_clean_invalidated_dcache(rt_uint32_t buffer, rt_uint32_t size) +{ + unsigned int ptr; + + ptr = buffer & ~(CACHE_LINE_SIZE - 1); + + while(ptr < buffer + size) + { + __asm + { + MCR p15, 0, ptr, c7, c14, 1 + } + ptr += CACHE_LINE_SIZE; + } +} + +void mmu_clean_dcache(rt_uint32_t buffer, rt_uint32_t size) +{ + unsigned int ptr; + + ptr = buffer & ~(CACHE_LINE_SIZE - 1); + + while (ptr < buffer + size) + { + __asm + { + MCR p15, 0, ptr, c7, c10, 1 + } + ptr += CACHE_LINE_SIZE; + } +} + +void mmu_invalidate_dcache(rt_uint32_t buffer, rt_uint32_t size) +{ + unsigned int ptr; + + ptr = buffer & ~(CACHE_LINE_SIZE - 1); + + while (ptr < buffer + size) + { + __asm + { + MCR p15, 0, ptr, c7, c6, 1 + } + ptr += CACHE_LINE_SIZE; + } +} + +void mmu_invalidate_tlb() +{ + register rt_uint32_t value; + + value = 0; + __asm + { + mcr p15, 0, value, c8, c7, 0 + } +} + +void mmu_invalidate_icache() +{ + register rt_uint32_t value; + + value = 0; + + __asm + { + mcr p15, 0, value, c7, c5, 0 + } +} + + +void mmu_invalidate_dcache_all() +{ + register rt_uint32_t value; + + value = 0; + + __asm + { + mcr p15, 0, value, c7, c6, 0 + } +} +#elif defined(__GNUC__) +void mmu_setttbase(register rt_uint32_t i) +{ + register rt_uint32_t value; + + /* Invalidates all TLBs.Domain access is selected as + * client by configuring domain access register, + * in that case access controlled by permission value + * set by page table entry + */ + value = 0; + asm ("mcr p15, 0, %0, c8, c7, 0"::"r"(value)); + + value = 0x55555555; + asm ("mcr p15, 0, %0, c3, c0, 0"::"r"(value)); + asm ("mcr p15, 0, %0, c2, c0, 0"::"r"(i)); +} + +void mmu_set_domain(register rt_uint32_t i) +{ + asm ("mcr p15,0, %0, c3, c0, 0": :"r" (i)); +} + +void mmu_enable() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i |= 0x1; + i |= (1 << 13); /* High exception vectors selected, address range = 0xFFFF0000-0xFFFF001C */ + /* S R bit=1 0 for system protection */ + i |= (1 << 8); + i &= ~(1 << 9); + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_disable() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i &= ~0x1; + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_enable_icache() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i |= (1 << 12); + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_enable_dcache() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i |= (1 << 2); + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_disable_icache() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i &= ~(1 << 12); + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_disable_dcache() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i &= ~(1 << 2); + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_enable_alignfault() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i |= (1 << 1); + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_disable_alignfault() +{ + register rt_uint32_t i; + + /* read control register */ + asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); + + i &= ~(1 << 1); + + /* write back to control register */ + asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); +} + +void mmu_clean_invalidated_cache_index(int index) +{ + asm ("mcr p15, 0, %0, c7, c14, 2": :"r" (index)); +} + +void mmu_clean_invalidated_dcache(rt_uint32_t buffer, rt_uint32_t size) +{ + unsigned int ptr; + + ptr = buffer & ~(CACHE_LINE_SIZE - 1); + + while(ptr < buffer + size) + { + asm ("mcr p15, 0, %0, c7, c14, 1": :"r" (ptr)); + ptr += CACHE_LINE_SIZE; + } +} + + +void mmu_clean_dcache(rt_uint32_t buffer, rt_uint32_t size) +{ + unsigned int ptr; + + ptr = buffer & ~(CACHE_LINE_SIZE - 1); + + while (ptr < buffer + size) + { + asm ("mcr p15, 0, %0, c7, c10, 1": :"r" (ptr)); + ptr += CACHE_LINE_SIZE; + } +} + +void mmu_invalidate_dcache(rt_uint32_t buffer, rt_uint32_t size) +{ + unsigned int ptr; + + ptr = buffer & ~(CACHE_LINE_SIZE - 1); + + while (ptr < buffer + size) + { + asm ("mcr p15, 0, %0, c7, c6, 1": :"r" (ptr)); + ptr += CACHE_LINE_SIZE; + } +} + +void mmu_invalidate_tlb() +{ + asm ("mcr p15, 0, %0, c8, c7, 0": :"r" (0)); +} + +void mmu_invalidate_icache() +{ + asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (0)); +} + +void mmu_invalidate_dcache_all() +{ + asm ("mcr p15, 0, %0, c7, c6, 0": :"r" (0)); +} +#endif + +/* level1 page table */ +static volatile unsigned int _pgd_table[4*1024] ALIGN(16*1024); +/* + * level2 page table + * RT_MMU_PTE_SIZE must be 1024*n + */ +static volatile unsigned int _pte_table[RT_MMU_PTE_SIZE] ALIGN(1*1024); + +void mmu_create_pgd(struct mem_desc *mdesc) +{ + volatile rt_uint32_t *pTT; + volatile int i, nSec; + pTT = (rt_uint32_t *)_pgd_table + (mdesc->vaddr_start >> 20); + nSec = (mdesc->vaddr_end >> 20) - (mdesc->vaddr_start >> 20); + for(i = 0; i <= nSec; i++) + { + *pTT = mdesc->sect_attr | (((mdesc->paddr_start >> 20) + i) << 20); + pTT++; + } +} + +void mmu_create_pte(struct mem_desc *mdesc) +{ + volatile rt_uint32_t *pTT; + volatile rt_uint32_t *p_pteentry; + int i; + rt_uint32_t vaddr; + rt_uint32_t total_page = 0; + rt_uint32_t pte_offset = 0; + rt_uint32_t sect_attr = 0; + + total_page = (mdesc->vaddr_end >> 12) - (mdesc->vaddr_start >> 12) + 1; + pte_offset = mdesc->sect_attr & 0xfffffc00; + sect_attr = mdesc->sect_attr & 0x3ff; + vaddr = mdesc->vaddr_start; + + for(i = 0; i < total_page; i++) + { + pTT = (rt_uint32_t *)_pgd_table + (vaddr >> 20); + if (*pTT == 0) /* Level 1 page table item not used, now update pgd item */ + { + *pTT = pte_offset | sect_attr; + p_pteentry = (rt_uint32_t *)pte_offset + + ((vaddr & 0x000ff000) >> 12); + pte_offset += 1024; + } + else /* using old Level 1 page table item */ + { + p_pteentry = (rt_uint32_t *)(*pTT & 0xfffffc00) + + ((vaddr & 0x000ff000) >> 12); + } + + + *p_pteentry = mdesc->page_attr | (((mdesc->paddr_start >> 12) + i) << 12); + vaddr += 0x1000; + } +} + +static void build_pte_mem_desc(struct mem_desc *mdesc, rt_uint32_t size) +{ + rt_uint32_t pte_offset = 0; + rt_uint32_t nsec = 0; + /* set page table */ + for (; size > 0; size--) + { + if (mdesc->mapped_mode == PAGE_MAPPED) + { + nsec = (RT_ALIGN(mdesc->vaddr_end, 0x100000) - RT_ALIGN_DOWN(mdesc->vaddr_start, 0x100000)) >> 20; + mdesc->sect_attr |= (((rt_uint32_t)_pte_table)& 0xfffffc00) + pte_offset; + pte_offset += nsec << 10; + } + if (pte_offset >= RT_MMU_PTE_SIZE) + { + rt_kprintf("PTE table size too little\n"); + RT_ASSERT(0); + } + + mdesc++; + } +} + +void rt_hw_mmu_init(struct mem_desc *mdesc, rt_uint32_t size) +{ + /* disable I/D cache */ + mmu_disable_dcache(); + mmu_disable_icache(); + mmu_disable(); + mmu_invalidate_tlb(); + + /* clear pgd and pte table */ + rt_memset((void *)_pgd_table, 0, 16*1024); + rt_memset((void *)_pte_table, 0, RT_MMU_PTE_SIZE); + build_pte_mem_desc(mdesc, size); + /* set page table */ + for (; size > 0; size--) + { + if (mdesc->mapped_mode == SECT_MAPPED) + { + mmu_create_pgd(mdesc); + } + else + { + mmu_create_pte(mdesc); + } + + mdesc++; + } + + /* set MMU table address */ + mmu_setttbase((rt_uint32_t)_pgd_table); + + /* enables MMU */ + mmu_enable(); + + /* enable Instruction Cache */ + mmu_enable_icache(); + + /* enable Data Cache */ + mmu_enable_dcache(); + + mmu_invalidate_icache(); + mmu_invalidate_dcache_all(); +} + diff --git a/libcpu/arm/dm36x/mmu.h b/libcpu/arm/dm36x/mmu.h new file mode 100644 index 0000000000000000000000000000000000000000..9dd802cf3b45b35375cc02d34e2d2f8fc2d52dec --- /dev/null +++ b/libcpu/arm/dm36x/mmu.h @@ -0,0 +1,164 @@ +/* + * File : mmu.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + */ + +#ifndef __MMU_H__ +#define __MMU_H__ + +#include + +#define CACHE_LINE_SIZE 32 + +/* + * Hardware page table definitions. + * + * + Level 1 descriptor (PGD) + * - common + */ +#define PGD_TYPE_MASK (3 << 0) +#define PGD_TYPE_FAULT (0 << 0) +#define PGD_TYPE_TABLE (1 << 0) +#define PGD_TYPE_SECT (2 << 0) +#define PGD_BIT4 (1 << 4) +#define PGD_DOMAIN(x) ((x) << 5) +#define PGD_PROTECTION (1 << 9) /* ARMv5 */ +/* + * - section + */ +#define PGD_SECT_BUFFERABLE (1 << 2) +#define PGD_SECT_CACHEABLE (1 << 3) +#define PGD_SECT_XN (1 << 4) /* ARMv6 */ +#define PGD_SECT_AP0 (1 << 10) +#define PGD_SECT_AP1 (1 << 11) +#define PGD_SECT_TEX(x) ((x) << 12) /* ARMv5 */ +#define PGD_SECT_APX (1 << 15) /* ARMv6 */ +#define PGD_SECT_S (1 << 16) /* ARMv6 */ +#define PGD_SECT_nG (1 << 17) /* ARMv6 */ +#define PGD_SECT_SUPER (1 << 18) /* ARMv6 */ + +#define PGD_SECT_UNCACHED (0) +#define PGD_SECT_BUFFERED (PGD_SECT_BUFFERABLE) +#define PGD_SECT_WT (PGD_SECT_CACHEABLE) +#define PGD_SECT_WB (PGD_SECT_CACHEABLE | PGD_SECT_BUFFERABLE) +#define PGD_SECT_MINICACHE (PGD_SECT_TEX(1) | PGD_SECT_CACHEABLE) +#define PGD_SECT_WBWA (PGD_SECT_TEX(1) | PGD_SECT_CACHEABLE | PGD_SECT_BUFFERABLE) +#define PGD_SECT_NONSHARED_DEV (PGD_SECT_TEX(2)) + + +/* + * + Level 2 descriptor (PTE) + * - common + */ +#define PTE_TYPE_MASK (3 << 0) +#define PTE_TYPE_FAULT (0 << 0) +#define PTE_TYPE_LARGE (1 << 0) +#define PTE_TYPE_SMALL (2 << 0) +#define PTE_TYPE_EXT (3 << 0) /* ARMv5 */ +#define PTE_BUFFERABLE (1 << 2) +#define PTE_CACHEABLE (1 << 3) + +/* + * - extended small page/tiny page + */ +#define PTE_EXT_XN (1 << 0) /* ARMv6 */ +#define PTE_EXT_AP_MASK (3 << 4) +#define PTE_EXT_AP0 (1 << 4) +#define PTE_EXT_AP1 (2 << 4) +#define PTE_EXT_AP_UNO_SRO (0 << 4) +#define PTE_EXT_AP_UNO_SRW (PTE_EXT_AP0) +#define PTE_EXT_AP_URO_SRW (PTE_EXT_AP1) +#define PTE_EXT_AP_URW_SRW (PTE_EXT_AP1|PTE_EXT_AP0) +#define PTE_EXT_TEX(x) ((x) << 6) /* ARMv5 */ +#define PTE_EXT_APX (1 << 9) /* ARMv6 */ +#define PTE_EXT_SHARED (1 << 10) /* ARMv6 */ +#define PTE_EXT_NG (1 << 11) /* ARMv6 */ + +/* + * - small page + */ +#define PTE_SMALL_AP_MASK (0xff << 4) +#define PTE_SMALL_AP_UNO_SRO (0x00 << 4) +#define PTE_SMALL_AP_UNO_SRW (0x55 << 4) +#define PTE_SMALL_AP_URO_SRW (0xaa << 4) +#define PTE_SMALL_AP_URW_SRW (0xff << 4) + +/* + * sector table properities + */ +#define SECT_CB (PGD_SECT_CACHEABLE|PGD_SECT_BUFFERABLE) //cache_on, write_back +#define SECT_CNB (PGD_SECT_CACHEABLE) //cache_on, write_through +#define SECT_NCB (PGD_SECT_BUFFERABLE) //cache_off,WR_BUF on +#define SECT_NCNB (0 << 2) //cache_off,WR_BUF off + +#define SECT_AP_RW (PGD_SECT_AP0|PGD_SECT_AP1) //supervisor=RW, user=RW +#define SECT_AP_RO ((0 << 10)|(0 << 11)) //supervisor=RO, user=NO Access(SR=10) + +#define SECT_RW_CB (SECT_AP_RW|PGD_DOMAIN(0)|PGD_SECT_WB|PGD_TYPE_SECT|PGD_BIT4) /* Read/Write, cache, write back */ +#define SECT_RW_CNB (SECT_AP_RW|PGD_DOMAIN(0)|PGD_SECT_WT|PGD_TYPE_SECT|PGD_BIT4) /* Read/Write, cache, write through */ +#define SECT_RW_NCNB (SECT_AP_RW|PGD_DOMAIN(0)|PGD_TYPE_SECT|PGD_BIT4) /* Read/Write without cache and write buffer */ +#define SECT_RW_FAULT (SECT_AP_RW|PGD_DOMAIN(1)|PGD_TYPE_SECT|PGD_BIT4) /* Read/Write without cache and write buffer */ + +#define SECT_RO_CB (SECT_AP_RO|PGD_DOMAIN(0)|PGD_SECT_WB|PGD_TYPE_SECT|PGD_BIT4) /* Read Only, cache, write back */ +#define SECT_RO_CNB (SECT_AP_RO|PGD_DOMAIN(0)|PGD_SECT_WT|PGD_TYPE_SECT|PGD_BIT4) /* Read Only, cache, write through */ +#define SECT_RO_NCNB (SECT_AP_RO|PGD_DOMAIN(0)|PGD_TYPE_SECT|PGD_BIT4) /* Read Only without cache and write buffer */ +#define SECT_RO_FAULT (SECT_AP_RO|PGD_DOMAIN(1)|PGD_TYPE_SECT|PGD_BIT4) /* Read Only without cache and write buffer */ + +#define SECT_TO_PAGE (PGD_DOMAIN(0)|PGD_TYPE_TABLE|PGD_BIT4) /* Level 2 descriptor (PTE) entry properity */ + +/* + * page table properities + */ +#define PAGE_CB (PTE_BUFFERABLE|PTE_CACHEABLE) //cache_on, write_back +#define PAGE_CNB (PTE_CACHEABLE) //cache_on, write_through +#define PAGE_NCB (PTE_BUFFERABLE) //cache_off,WR_BUF on +#define PAGE_NCNB (0 << 2) //cache_off,WR_BUF off + +#define PAGE_AP_RW PTE_SMALL_AP_URW_SRW //supervisor=RW, user=RW +#define PAGE_AP_RO PTE_SMALL_AP_UNO_SRO //supervisor=RO, user=NO Access(SR=10) + +#define PAGE_RW_CB (PAGE_AP_RW|PAGE_CB|PTE_TYPE_SMALL) /* Read/Write, cache, write back */ +#define PAGE_RW_CNB (PAGE_AP_RW|PAGE_CNB|PTE_TYPE_SMALL) /* Read/Write, cache, write through */ +#define PAGE_RW_NCNB (PAGE_AP_RW|PTE_TYPE_SMALL) /* Read/Write without cache and write buffer */ +#define PAGE_RW_FAULT (PAGE_AP_RW|PTE_TYPE_SMALL) /* Read/Write without cache and write buffer */ + + +#define PAGE_RO_CB (PAGE_AP_RO|PAGE_CB|PTE_TYPE_SMALL) /* Read Only, cache, write back */ +#define PAGE_RO_CNB (PAGE_AP_RO|PAGE_CNB|PTE_TYPE_SMALL) /* Read Only, cache, write through */ +#define PAGE_RO_NCNB (PAGE_AP_RO|PTE_TYPE_SMALL) /* Read Only without cache and write buffer */ +#define PAGE_RO_FAULT (PAGE_AP_RO|PTE_TYPE_SMALL) /* Read Only without cache and write buffer */ + +struct mem_desc { + rt_uint32_t vaddr_start; + rt_uint32_t vaddr_end; + rt_uint32_t paddr_start; + rt_uint32_t sect_attr; /* when page mapped */ + rt_uint32_t page_attr; /* only sector mapped valid */ + rt_uint32_t mapped_mode; + #define SECT_MAPPED 0 + #define PAGE_MAPPED 1 +}; + + +void rt_hw_mmu_init(struct mem_desc *mdesc, rt_uint32_t size); + +#endif + diff --git a/libcpu/arm/dm36x/stack.c b/libcpu/arm/dm36x/stack.c new file mode 100644 index 0000000000000000000000000000000000000000..b41b0b859c96e7646078f685f14314b61ed8111d --- /dev/null +++ b/libcpu/arm/dm36x/stack.c @@ -0,0 +1,79 @@ +/* + * File : stack.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006, RT-Thread Development Team + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Change Logs: + * Date Author Notes + * 2011-01-13 weety + */ +#include + +/*****************************/ +/* CPU Mode */ +/*****************************/ +#define USERMODE 0x10 +#define FIQMODE 0x11 +#define IRQMODE 0x12 +#define SVCMODE 0x13 +#define ABORTMODE 0x17 +#define UNDEFMODE 0x1b +#define MODEMASK 0x1f +#define NOINT 0xc0 + +/** + * This function will initialize thread stack + * + * @param tentry the entry of thread + * @param parameter the parameter of entry + * @param stack_addr the beginning stack address + * @param texit the function will be called when thread exit + * + * @return stack address + */ +rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, + rt_uint8_t *stack_addr, void *texit) +{ + rt_uint32_t *stk; + + stk = (rt_uint32_t*)stack_addr; + *(stk) = (rt_uint32_t)tentry; /* entry point */ + *(--stk) = (rt_uint32_t)texit; /* lr */ + *(--stk) = 0; /* r12 */ + *(--stk) = 0; /* r11 */ + *(--stk) = 0; /* r10 */ + *(--stk) = 0; /* r9 */ + *(--stk) = 0; /* r8 */ + *(--stk) = 0; /* r7 */ + *(--stk) = 0; /* r6 */ + *(--stk) = 0; /* r5 */ + *(--stk) = 0; /* r4 */ + *(--stk) = 0; /* r3 */ + *(--stk) = 0; /* r2 */ + *(--stk) = 0; /* r1 */ + *(--stk) = (rt_uint32_t)parameter; /* r0 : argument */ + + /* cpsr */ + if ((rt_uint32_t)tentry & 0x01) + *(--stk) = SVCMODE | 0x20; /* thumb mode */ + else + *(--stk) = SVCMODE; /* arm mode */ + + /* return task's current stack address */ + return (rt_uint8_t *)stk; +} +