提交 185d84b4 编写于 作者: L Linus Torvalds

Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] IP27: Build fix
  [MIPS] Wire up ioprio_set and ioprio_get.
  [MIPS] Fix __raw_read_trylock() to allow multiple readers
  [MIPS] Export __copy_user_inatomic.
  [MIPS] R2 bitops compile fix for gcc < 4.0.
  [MIPS] TX39: Remove redundant tx39_blast_icache() calls
  [MIPS] Cobalt: Fix early printk
  [MIPS] SMTC: De-obscure Malta hooks.
  [MIPS] SMTC: Add fordward declarations for mm_struct and task_struct.
  [MIPS] SMTC: <asm/mips_mt.h> must include <linux/cpumask.h>
  [MIPS] SMTC: <asm/smtc_ipi.h> must include <linux/spinlock.h>
  [MIPS] Atlas, Malta: Fix build warning.
......@@ -167,6 +167,7 @@ config MIPS_COBALT
select IRQ_CPU
select MIPS_GT64111
select SYS_HAS_CPU_NEVADA
select SYS_HAS_EARLY_PRINTK
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
select SYS_SUPPORTS_LITTLE_ENDIAN
......@@ -837,7 +838,6 @@ source "arch/mips/tx4927/Kconfig"
source "arch/mips/tx4938/Kconfig"
source "arch/mips/vr41xx/Kconfig"
source "arch/mips/philips/pnx8550/common/Kconfig"
source "arch/mips/cobalt/Kconfig"
endmenu
......
config EARLY_PRINTK
bool "Early console support"
depends on MIPS_COBALT
help
Provide early console support by direct access to the
on board UART. The UART must have been previously
initialised by the boot loader.
......@@ -9,11 +9,8 @@
#include <asm/addrspace.h>
#include <asm/mach-cobalt/cobalt.h>
static void putchar(int c)
void prom_putchar(char c)
{
if(c == '\n')
putchar('\r');
while(!(COBALT_UART[UART_LSR] & UART_LSR_THRE))
;
......
......@@ -37,6 +37,7 @@ EXPORT_SYMBOL(kernel_thread);
* Userspace access stuff.
*/
EXPORT_SYMBOL(__copy_user);
EXPORT_SYMBOL(__copy_user_inatomic);
EXPORT_SYMBOL(__bzero);
EXPORT_SYMBOL(__strncpy_from_user_nocheck_asm);
EXPORT_SYMBOL(__strncpy_from_user_asm);
......
......@@ -656,6 +656,8 @@ einval: li v0, -EINVAL
sys sys_kexec_load 4
sys sys_getcpu 3
sys sys_epoll_pwait 6
sys sys_ioprio_set 3
sys sys_ioprio_get 2
.endm
/* We pre-compute the number of _instruction_ bytes needed to
......
......@@ -471,3 +471,6 @@ sys_call_table:
PTR sys_kexec_load /* 5270 */
PTR sys_getcpu
PTR sys_epoll_pwait
PTR sys_ioprio_set
PTR sys_ioprio_get
.size sys_call_table,.-sys_call_table
......@@ -395,5 +395,8 @@ EXPORT(sysn32_call_table)
PTR compat_sys_set_robust_list
PTR compat_sys_get_robust_list
PTR compat_sys_kexec_load
PTR sys_getcpu
PTR sys_getcpu /* 6275 */
PTR compat_sys_epoll_pwait
PTR sys_ioprio_set
PTR sys_ioprio_get
.size sysn32_call_table,.-sysn32_call_table
......@@ -519,4 +519,6 @@ sys_call_table:
PTR compat_sys_kexec_load
PTR sys_getcpu
PTR compat_sys_epoll_pwait
PTR sys_ioprio_set
PTR sys_ioprio_get /* 4315 */
.size sys_call_table,.-sys_call_table
......@@ -251,8 +251,6 @@ void __init mips_ejtag_setup (void)
void __init prom_init(void)
{
u32 start, map, mask, data;
prom_argc = fw_arg0;
_prom_argv = (int *) fw_arg1;
_prom_envp = (int *) fw_arg2;
......@@ -278,6 +276,8 @@ void __init prom_init(void)
mips_revision_corid = MIPS_REVISION_CORID_CORE_EMUL_MSC;
}
switch(mips_revision_corid) {
u32 start, map, mask, data;
case MIPS_REVISION_CORID_QED_RM5261:
case MIPS_REVISION_CORID_CORE_LV:
case MIPS_REVISION_CORID_CORE_FPGA:
......
......@@ -21,4 +21,4 @@
obj-y := malta_int.o malta_setup.o
obj-$(CONFIG_MTD) += malta_mtd.o
obj-$(CONFIG_SMP) += malta_smp.o
obj-$(CONFIG_MIPS_MT_SMTC) += malta_smtc.o
/*
* Malta Platform-specific hooks for SMP operation
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/cpumask.h>
#include <linux/interrupt.h>
#include <asm/atomic.h>
#include <asm/cpu.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/hardirq.h>
#include <asm/mmu_context.h>
#include <asm/smp.h>
#ifdef CONFIG_MIPS_MT_SMTC
#include <asm/mipsregs.h>
#include <asm/mipsmtregs.h>
#include <asm/smtc.h>
#include <asm/smtc_ipi.h>
#endif /* CONFIG_MIPS_MT_SMTC */
/* VPE/SMP Prototype implements platform interfaces directly */
#if !defined(CONFIG_MIPS_MT_SMP)
/*
* Cause the specified action to be performed on a targeted "CPU"
......@@ -27,10 +16,8 @@
void core_send_ipi(int cpu, unsigned int action)
{
/* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */
#ifdef CONFIG_MIPS_MT_SMTC
/* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */
smtc_send_ipi(cpu, LINUX_SMP_IPI, action);
#endif /* CONFIG_MIPS_MT_SMTC */
}
/*
......@@ -39,9 +26,7 @@ void core_send_ipi(int cpu, unsigned int action)
void prom_boot_secondary(int cpu, struct task_struct *idle)
{
#ifdef CONFIG_MIPS_MT_SMTC
smtc_boot_secondary(cpu, idle);
#endif /* CONFIG_MIPS_MT_SMTC */
}
/*
......@@ -50,7 +35,6 @@ void prom_boot_secondary(int cpu, struct task_struct *idle)
void prom_init_secondary(void)
{
#ifdef CONFIG_MIPS_MT_SMTC
void smtc_init_secondary(void);
int myvpe;
......@@ -65,7 +49,6 @@ void prom_init_secondary(void)
}
smtc_init_secondary();
#endif /* CONFIG_MIPS_MT_SMTC */
}
/*
......@@ -93,9 +76,7 @@ void __init plat_prepare_cpus(unsigned int max_cpus)
void prom_smp_finish(void)
{
#ifdef CONFIG_MIPS_MT_SMTC
smtc_smp_finish();
#endif /* CONFIG_MIPS_MT_SMTC */
}
/*
......@@ -105,5 +86,3 @@ void prom_smp_finish(void)
void prom_cpus_done(void)
{
}
#endif /* CONFIG_MIPS32R2_MT_SMP */
......@@ -128,7 +128,6 @@ static inline void tx39_flush_cache_all(void)
return;
tx39_blast_dcache();
tx39_blast_icache();
}
static inline void tx39___flush_cache_all(void)
......@@ -142,24 +141,19 @@ static void tx39_flush_cache_mm(struct mm_struct *mm)
if (!cpu_has_dc_aliases)
return;
if (cpu_context(smp_processor_id(), mm) != 0) {
tx39_flush_cache_all();
}
if (cpu_context(smp_processor_id(), mm) != 0)
tx39_blast_dcache();
}
static void tx39_flush_cache_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
int exec;
if (!cpu_has_dc_aliases)
return;
if (!(cpu_context(smp_processor_id(), vma->vm_mm)))
return;
exec = vma->vm_flags & VM_EXEC;
if (cpu_has_dc_aliases || exec)
tx39_blast_dcache();
if (exec)
tx39_blast_icache();
tx39_blast_dcache();
}
static void tx39_flush_cache_page(struct vm_area_struct *vma, unsigned long page, unsigned long pfn)
......@@ -218,7 +212,7 @@ static void tx39_flush_cache_page(struct vm_area_struct *vma, unsigned long page
static void local_tx39_flush_data_cache_page(void * addr)
{
tx39_blast_dcache_page(addr);
tx39_blast_dcache_page((unsigned long)addr);
}
static void tx39_flush_data_cache_page(unsigned long addr)
......
......@@ -191,7 +191,6 @@ static inline void ioc3_eth_init(void)
ioc3->eier = 0;
}
extern void ip27_setup_console(void);
extern void ip27_time_init(void);
extern void ip27_reboot_setup(void);
......@@ -200,7 +199,6 @@ void __init plat_mem_setup(void)
hubreg_t p, e, n_mode;
nasid_t nid;
ip27_setup_console();
ip27_reboot_setup();
/*
......
......@@ -54,6 +54,7 @@
static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
unsigned short bit = nr & SZLONG_MASK;
unsigned long temp;
if (cpu_has_llsc && R10000_LLSC_WAR) {
......@@ -65,9 +66,9 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
" beqzl %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m));
: "ir" (1UL << bit), "m" (*m));
#ifdef CONFIG_CPU_MIPSR2
} else if (__builtin_constant_p(nr)) {
} else if (__builtin_constant_p(bit)) {
__asm__ __volatile__(
"1: " __LL "%0, %1 # set_bit \n"
" " __INS "%0, %4, %2, 1 \n"
......@@ -77,7 +78,7 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
"2: b 1b \n"
" .previous \n"
: "=&r" (temp), "=m" (*m)
: "ir" (nr & SZLONG_MASK), "m" (*m), "r" (~0));
: "ir" (bit), "m" (*m), "r" (~0));
#endif /* CONFIG_CPU_MIPSR2 */
} else if (cpu_has_llsc) {
__asm__ __volatile__(
......@@ -91,14 +92,14 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
" .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m));
: "ir" (1UL << bit), "m" (*m));
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
mask = 1UL << bit;
local_irq_save(flags);
*a |= mask;
local_irq_restore(flags);
......@@ -118,6 +119,7 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
unsigned short bit = nr & SZLONG_MASK;
unsigned long temp;
if (cpu_has_llsc && R10000_LLSC_WAR) {
......@@ -129,9 +131,9 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
" beqzl %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (~(1UL << (nr & SZLONG_MASK))), "m" (*m));
: "ir" (~(1UL << bit)), "m" (*m));
#ifdef CONFIG_CPU_MIPSR2
} else if (__builtin_constant_p(nr)) {
} else if (__builtin_constant_p(bit)) {
__asm__ __volatile__(
"1: " __LL "%0, %1 # clear_bit \n"
" " __INS "%0, $0, %2, 1 \n"
......@@ -141,7 +143,7 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
"2: b 1b \n"
" .previous \n"
: "=&r" (temp), "=m" (*m)
: "ir" (nr & SZLONG_MASK), "m" (*m));
: "ir" (bit), "m" (*m));
#endif /* CONFIG_CPU_MIPSR2 */
} else if (cpu_has_llsc) {
__asm__ __volatile__(
......@@ -155,14 +157,14 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
" .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (~(1UL << (nr & SZLONG_MASK))), "m" (*m));
: "ir" (~(1UL << bit)), "m" (*m));
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
mask = 1UL << bit;
local_irq_save(flags);
*a &= ~mask;
local_irq_restore(flags);
......@@ -180,6 +182,8 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
*/
static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
{
unsigned short bit = nr & SZLONG_MASK;
if (cpu_has_llsc && R10000_LLSC_WAR) {
unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
unsigned long temp;
......@@ -192,7 +196,7 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
" beqzl %0, 1b \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m));
: "ir" (1UL << bit), "m" (*m));
} else if (cpu_has_llsc) {
unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
unsigned long temp;
......@@ -208,14 +212,14 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
" .previous \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m)
: "ir" (1UL << (nr & SZLONG_MASK)), "m" (*m));
: "ir" (1UL << bit), "m" (*m));
} else {
volatile unsigned long *a = addr;
unsigned long mask;
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
mask = 1UL << bit;
local_irq_save(flags);
*a ^= mask;
local_irq_restore(flags);
......@@ -233,6 +237,8 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
static inline int test_and_set_bit(unsigned long nr,
volatile unsigned long *addr)
{
unsigned short bit = nr & SZLONG_MASK;
if (cpu_has_llsc && R10000_LLSC_WAR) {
unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
unsigned long temp, res;
......@@ -246,7 +252,7 @@ static inline int test_and_set_bit(unsigned long nr,
" and %2, %0, %3 \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
: "r" (1UL << bit), "m" (*m)
: "memory");
return res != 0;
......@@ -269,7 +275,7 @@ static inline int test_and_set_bit(unsigned long nr,
" .previous \n"
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
: "r" (1UL << bit), "m" (*m)
: "memory");
return res != 0;
......@@ -280,7 +286,7 @@ static inline int test_and_set_bit(unsigned long nr,
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
mask = 1UL << bit;
local_irq_save(flags);
retval = (mask & *a) != 0;
*a |= mask;
......@@ -303,6 +309,8 @@ static inline int test_and_set_bit(unsigned long nr,
static inline int test_and_clear_bit(unsigned long nr,
volatile unsigned long *addr)
{
unsigned short bit = nr & SZLONG_MASK;
if (cpu_has_llsc && R10000_LLSC_WAR) {
unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
unsigned long temp, res;
......@@ -317,7 +325,7 @@ static inline int test_and_clear_bit(unsigned long nr,
" and %2, %0, %3 \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
: "r" (1UL << bit), "m" (*m)
: "memory");
return res != 0;
......@@ -336,7 +344,7 @@ static inline int test_and_clear_bit(unsigned long nr,
"2: b 1b \n"
" .previous \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "ri" (nr & SZLONG_MASK), "m" (*m)
: "ri" (bit), "m" (*m)
: "memory");
return res;
......@@ -361,7 +369,7 @@ static inline int test_and_clear_bit(unsigned long nr,
" .previous \n"
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
: "r" (1UL << bit), "m" (*m)
: "memory");
return res != 0;
......@@ -372,7 +380,7 @@ static inline int test_and_clear_bit(unsigned long nr,
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
mask = 1UL << bit;
local_irq_save(flags);
retval = (mask & *a) != 0;
*a &= ~mask;
......@@ -395,6 +403,8 @@ static inline int test_and_clear_bit(unsigned long nr,
static inline int test_and_change_bit(unsigned long nr,
volatile unsigned long *addr)
{
unsigned short bit = nr & SZLONG_MASK;
if (cpu_has_llsc && R10000_LLSC_WAR) {
unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
unsigned long temp, res;
......@@ -408,7 +418,7 @@ static inline int test_and_change_bit(unsigned long nr,
" and %2, %0, %3 \n"
" .set mips0 \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
: "r" (1UL << bit), "m" (*m)
: "memory");
return res != 0;
......@@ -431,7 +441,7 @@ static inline int test_and_change_bit(unsigned long nr,
" .previous \n"
" .set pop \n"
: "=&r" (temp), "=m" (*m), "=&r" (res)
: "r" (1UL << (nr & SZLONG_MASK)), "m" (*m)
: "r" (1UL << bit), "m" (*m)
: "memory");
return res != 0;
......@@ -441,7 +451,7 @@ static inline int test_and_change_bit(unsigned long nr,
unsigned long flags;
a += nr >> SZLONG_LOG;
mask = 1UL << (nr & SZLONG_MASK);
mask = 1UL << bit;
local_irq_save(flags);
retval = (mask & *a) != 0;
*a ^= mask;
......
......@@ -6,6 +6,8 @@
#ifndef __ASM_MIPS_MT_H
#define __ASM_MIPS_MT_H
#include <linux/cpumask.h>
extern cpumask_t mt_fpu_cpumask;
extern unsigned long mt_fpemul_threshold;
......
......@@ -34,6 +34,9 @@ typedef long asiduse;
extern asiduse smtc_live_asid[MAX_SMTC_TLBS][MAX_SMTC_ASIDS];
struct mm_struct;
struct task_struct;
void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu);
void smtc_flush_tlb_asid(unsigned long asid);
......
......@@ -4,6 +4,8 @@
#ifndef __ASM_SMTC_IPI_H
#define __ASM_SMTC_IPI_H
#include <linux/spinlock.h>
//#define SMTC_IPI_DEBUG
#ifdef SMTC_IPI_DEBUG
......
......@@ -287,7 +287,7 @@ static inline int __raw_read_trylock(raw_rwlock_t *rw)
" .set noreorder # __raw_read_trylock \n"
" li %2, 0 \n"
"1: ll %1, %3 \n"
" bnez %1, 2f \n"
" bltz %1, 2f \n"
" addu %1, 1 \n"
" sc %1, %0 \n"
" .set reorder \n"
......@@ -304,7 +304,7 @@ static inline int __raw_read_trylock(raw_rwlock_t *rw)
" .set noreorder # __raw_read_trylock \n"
" li %2, 0 \n"
"1: ll %1, %3 \n"
" bnez %1, 2f \n"
" bltz %1, 2f \n"
" addu %1, 1 \n"
" sc %1, %0 \n"
" beqz %1, 1b \n"
......
......@@ -435,6 +435,8 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n);
__cu_len; \
})
extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
#define __copy_to_user_inatomic(to,from,n) \
({ \
void __user *__cu_to; \
......
......@@ -334,16 +334,18 @@
#define __NR_kexec_load (__NR_Linux + 311)
#define __NR_getcpu (__NR_Linux + 312)
#define __NR_epoll_pwait (__NR_Linux + 313)
#define __NR_ioprio_set (__NR_Linux + 314)
#define __NR_ioprio_get (__NR_Linux + 315)
/*
* Offset of the last Linux o32 flavoured syscall
*/
#define __NR_Linux_syscalls 313
#define __NR_Linux_syscalls 315
#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
#define __NR_O32_Linux 4000
#define __NR_O32_Linux_syscalls 313
#define __NR_O32_Linux_syscalls 315
#if _MIPS_SIM == _MIPS_SIM_ABI64
......@@ -624,16 +626,18 @@
#define __NR_kexec_load (__NR_Linux + 270)
#define __NR_getcpu (__NR_Linux + 271)
#define __NR_epoll_pwait (__NR_Linux + 272)
#define __NR_ioprio_set (__NR_Linux + 273)
#define __NR_ioprio_get (__NR_Linux + 274)
/*
* Offset of the last Linux 64-bit flavoured syscall
*/
#define __NR_Linux_syscalls 272
#define __NR_Linux_syscalls 274
#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
#define __NR_64_Linux 5000
#define __NR_64_Linux_syscalls 272
#define __NR_64_Linux_syscalls 274
#if _MIPS_SIM == _MIPS_SIM_NABI32
......@@ -918,16 +922,18 @@
#define __NR_kexec_load (__NR_Linux + 274)
#define __NR_getcpu (__NR_Linux + 275)
#define __NR_epoll_pwait (__NR_Linux + 276)
#define __NR_ioprio_set (__NR_Linux + 277)
#define __NR_ioprio_get (__NR_Linux + 278)
/*
* Offset of the last N32 flavoured syscall
*/
#define __NR_Linux_syscalls 276
#define __NR_Linux_syscalls 278
#endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
#define __NR_N32_Linux 6000
#define __NR_N32_Linux_syscalls 276
#define __NR_N32_Linux_syscalls 278
#ifdef __KERNEL__
......
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