From 4f458c68d223d4eb01019fa74242e5201ba8f906 Mon Sep 17 00:00:00 2001 From: "bernard.xiong@gmail.com" Date: Tue, 7 Feb 2012 03:55:01 +0000 Subject: [PATCH] add MTD device. git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1939 bbd45198-f89e-11dd-88c7-29a3b14d5316 --- components/drivers/include/drivers/mtd.h | 83 ++++++++++++++++++++++-- components/drivers/include/rtdevice.h | 2 + components/drivers/mtd/SConscript | 2 +- components/drivers/mtd/mtd_core.c | 79 ++++++++++++++++++++++ 4 files changed, 161 insertions(+), 5 deletions(-) create mode 100644 components/drivers/mtd/mtd_core.c diff --git a/components/drivers/include/drivers/mtd.h b/components/drivers/include/drivers/mtd.h index 7fcb28c3a2..13315b2684 100644 --- a/components/drivers/include/drivers/mtd.h +++ b/components/drivers/include/drivers/mtd.h @@ -1,18 +1,93 @@ +/* + * File : mtd.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2011-12-05 Bernard the first version + */ + +/* + * COPYRIGHT (C) 2012, Shanghai Real Thread + */ + #ifndef __MTD_H__ #define __MTD_H__ +#include + +struct rt_mtd_driver_ops; +#define RT_MTD_DEVICE(device) ((struct rt_mtd_device*)(device)) + struct rt_mtd_device { + struct rt_device parent; + + rt_uint32_t page_size; /* The Page size in the flash */ + rt_uint32_t block_size; /* The Block size in the flash */ + + rt_uint16_t oob_size; /* Out of bank size */ + rt_uint16_t reserve; + + rt_uint32_t block_start; /* The start of available block*/ + rt_uint32_t block_end; /* The end of available block */ + + /* operations interface */ const struct rt_mtd_driver_ops* ops; }; struct rt_mtd_driver_ops { - rt_uint32_t (*read_id) (rt_mtd_device* device); - rt_err_t (*read_page) (rt_mtd_device* device, rt_uint32_t page, rt_uint8_t *data, rt_uint8_t *spare); - rt_err_t (*write_page) (rt_mtd_device* device, rt_uint32_t page, rt_uint8_t *data, rt_uint8_t *spare); + rt_uint32_t (*read_id) (struct rt_mtd_device* device); + + int (*read) (struct rt_mtd_device* device, rt_off_t position, rt_uint8_t* data, rt_size_t size); + int (*write)(struct rt_mtd_device* device, rt_off_t position, const rt_uint8_t* data, rt_size_t size); - rt_err_t (*erase_block)(rt_mtd_device* device, rt_uint32_t block); + int (*oob_read) (struct rt_mtd_device* device, rt_off_t position, rt_uint8_t* spare); + int (*oob_write)(struct rt_mtd_device* device, rt_off_t position, const rt_uint8_t* spare); + + rt_err_t (*erase_block)(struct rt_mtd_device* device, rt_uint32_t block); }; +rt_err_t rt_mtd_register_device(const char* name, struct rt_mtd_device* device); + +rt_inline rt_uint32_t rt_mtd_read_id(struct rt_mtd_device* device) +{ + return device->ops->read_id(device); +} + +rt_inline int rt_mtd_read(struct rt_mtd_device* device, rt_off_t position, + rt_uint8_t* data, rt_size_t size) +{ + return device->ops->read(device, position, data, size); +} + +rt_inline int rt_mtd_write(struct rt_mtd_device* device, rt_off_t position, + const rt_uint8_t* data, rt_size_t size) +{ + return device->ops->write(device, position, data, size); +} + +rt_inline int rt_mtd_oob_read(struct rt_mtd_device* device, rt_off_t position, + rt_uint8_t* data) +{ + return device->ops->oob_read(device, position, data); +} + +rt_inline int rt_mtd_oob_write(struct rt_mtd_device* device, rt_off_t position, + const rt_uint8_t* data) +{ + return device->ops->oob_write(device, position, data); +} + +rt_inline rt_err_t rt_mtd_erase_block(struct rt_mtd_device* device, rt_uint32_t block) +{ + return device->ops->erase_block(device, block); +} + #endif diff --git a/components/drivers/include/rtdevice.h b/components/drivers/include/rtdevice.h index 41ce642556..e6b7dddd40 100644 --- a/components/drivers/include/rtdevice.h +++ b/components/drivers/include/rtdevice.h @@ -3,6 +3,8 @@ #include +#define RT_DEVICE(device) ((rt_device_t)device) + #ifdef RT_USING_SPI #include "drivers/spi.h" #endif diff --git a/components/drivers/mtd/SConscript b/components/drivers/mtd/SConscript index 6671d42b8f..e456017a6e 100644 --- a/components/drivers/mtd/SConscript +++ b/components/drivers/mtd/SConscript @@ -3,6 +3,6 @@ from building import * cwd = GetCurrentDir() src = Glob('*.c') CPPPATH = [cwd + '/../include'] -group = DefineGroup('Drivers', src, depend = ['RT_USING_MTD'], CPPPATH = CPPPATH) +group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_MTD'], CPPPATH = CPPPATH) Return('group') diff --git a/components/drivers/mtd/mtd_core.c b/components/drivers/mtd/mtd_core.c new file mode 100644 index 0000000000..a3d429dddd --- /dev/null +++ b/components/drivers/mtd/mtd_core.c @@ -0,0 +1,79 @@ +/* + * File : mtd_core.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2011-12-05 Bernard the first version + */ + +/* + * COPYRIGHT (C) 2012, Shanghai Real Thread + */ + +#include + +#ifdef RT_USING_MTD + +/* + * RT-Thread Generic Device Interface + */ +static rt_err_t _mtd_init(rt_device_t dev) +{ + return RT_EOK; +} + +static rt_err_t _mtd_open(rt_device_t dev, rt_uint16_t oflag) +{ + return RT_EOK; +} + +static rt_err_t _mtd_close(rt_device_t dev) +{ + return RT_EOK; +} + +static rt_size_t _mtd_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size) +{ + return size; +} + +static rt_size_t _mtd_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size) +{ + return size; +} + +static rt_err_t _mtd_control(rt_device_t dev, rt_uint8_t cmd, void *args) +{ + return RT_EOK; +} + +rt_err_t rt_mtd_register_device(const char* name, struct rt_mtd_device* device) +{ + rt_device_t dev; + + dev = RT_DEVICE(device); + RT_ASSERT(dev != RT_NULL); + + /* set device class and generic device interface */ + dev->type = RT_Device_Class_MTD; + dev->init = _mtd_init; + dev->open = _mtd_open; + dev->read = _mtd_read; + dev->write = _mtd_write; + dev->close = _mtd_close; + dev->control = _mtd_control; + + dev->rx_indicate = RT_NULL; + dev->tx_complete = RT_NULL; + + /* register to RT-Thread device system */ + return rt_device_register(dev, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE); +} + +#endif -- GitLab