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rt-thread/bsp/mini4020/drivers/sdcard.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2007-12-02 Yi.Qiu the first version
* 2010-01-01 Bernard Modify for mini2440
* 2010-10-13 Wangmeng Added sep4020 support
*/
#include <rtthread.h>
#include "sdcard.h"
#ifdef RT_USING_DFS
volatile rt_int32_t RCA;
/* RT-Thread Device Driver Interface */
#include <dfs_fs.h>
/*GLOBAL SD DEVICE PONITER*/
static struct sd_device *ptr_sddev;
static rt_uint8_t gsec_buf[SECTOR_SIZE];
#define USE_TIMEOUT
/*This file is to power on/off the SEP4020 SDC*/
/**
* This function will power on/off the SEP4020 SDC
*
* @param sd_ctl: 0/power on; 1/power off
* @return none
*
*/
static void sd_pwr(int sd_ctl)
{
if (sd_ctl)
{
*(RP)GPIO_PORTA_SEL |= 0x0200;
*(RP)GPIO_PORTA_DIR &= (~0x0200);
*(RP)GPIO_PORTA_DATA |= 0x0200;
}
else
{
*(RP)GPIO_PORTA_SEL |= 0x0200;
*(RP)GPIO_PORTA_DIR &= (~0x0200);
*(RP)GPIO_PORTA_DATA &= (~0x0200);
}
}
/*a nop operation to delay*/
static void delay(U32 j)
{
U32 i;
for (i = 0; i < j; i++)
{
/* nothing */
}
}
/*
* Send the command to set the data transfer mode
* @param cmd:the command to sent
* @param arg:the argument of the command
* @param mode:SDC transfer mode
* @param blk_len:the block size of each data
* @param num:number of blocks
* @param mask:sdc interrupt mask
*/
static rt_err_t cmd_data(U16 cmd, U32 arg, U16 mode, U16 blk_len, U16 num, U16 mask)
{
U32 i;
#ifdef USE_TIMEOUT
U32 to = 10000;
#endif
*(RP)SDC_CLOCK_CONTROL = 0Xff00;
*(RP)SDC_CLOCK_CONTROL = 0Xff04;
*(RP)SDC_INTERRUPT_STATUS_MASK = mask;
*(RP)SDC_TRANSFER_MODE = mode;
*(RP)SDC_BLOCK_SIZE = blk_len;
*(RP)SDC_BLOCK_COUNT = num;
*(RP)SDC_ARGUMENT = arg;
*(RP)SDC_COMMAND = cmd;
delay(10);
i = *(RP)SDC_INTERRUPT_STATUS & 0x1000;
while (i != 0x1000)
{
i = *(RP)SDC_INTERRUPT_STATUS & 0x1000;
#ifdef USE_TIMEOUT
to --;
if (!to)
{
EOUT("%s TIMEOUT\n", __FUNCTION__);
return -RT_ETIMEOUT;
}
#endif
}
delay(160);
return *(RP)SDC_RESPONSE0;
}
static rt_err_t cmd_response(U16 Cmd, U32 Arg, U16 TransMode, U16 BlkLen, U16 Nob, U16 IntMask)
{
U32 i;
#ifdef USE_TIMEOUT
U32 to = 50000;
#endif
*(RP)SDC_CLOCK_CONTROL = 0Xff00;
*(RP)SDC_CLOCK_CONTROL = 0Xff04;
*(RP)SDC_INTERRUPT_STATUS_MASK = IntMask;
*(RP)SDC_TRANSFER_MODE = TransMode;
*(RP)SDC_BLOCK_SIZE = BlkLen;
*(RP)SDC_BLOCK_COUNT = Nob;
*(RP)SDC_ARGUMENT = Arg;
*(RP)SDC_COMMAND = Cmd;
delay(10);
i = *(RP)SDC_INTERRUPT_STATUS & 0x1040;
while (i != 0x1040)
{
i = *(RP)SDC_INTERRUPT_STATUS & 0x1040;
#ifdef USE_TIMEOUT
to--;
if (!to)
{
EOUT("%s Timeout\n", __FUNCTION__);
return -RT_ETIMEOUT;
}
#endif
}
//DBOUT("cmd_response TO is %d\n",to);
delay(100);
return RT_EOK;
}
static rt_err_t cmd_wait(U16 Cmd, U32 Arg, U16 IntMask)
{
int i;
#ifdef USE_TIMEOUT
U32 to = 200000;
#endif
*(RP)SDC_CLOCK_CONTROL = 0Xff00;
*(RP)SDC_CLOCK_CONTROL = 0Xff04;
*(RP)SDC_COMMAND = Cmd;
*(RP)SDC_INTERRUPT_STATUS_MASK = IntMask;
*(RP)SDC_ARGUMENT = Arg;
i = *(RP)SDC_INTERRUPT_STATUS & 0x1000;
while (i != 0x1000)
{
i = *(RP)SDC_INTERRUPT_STATUS & 0x1000;
#ifdef USE_TIMEOUT
to--;
if (!to)
{
EOUT("%s Timeout\n", __FUNCTION__);
return -RT_ETIMEOUT;
}
#endif
}
//DBOUT("cmd_wait TO is %d\n",to);
delay(10);
return RT_EOK;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_err_t sd_init(void)
{
rt_err_t err;
#ifdef USE_TIMEOUT
rt_uint32_t to = 1000;
#endif
sd_pwr(1);
*(RP)SDC_SOFTWARE_RESET = 0x0;
delay(200);
*(RP)SDC_SOFTWARE_RESET = 0x1;
delay(200);
cmd_wait(0x08, 0x0, 0xfff);
do
{
err = cmd_wait(0x6ea, 0x0, 0xfff);
#ifdef USE_TIMEOUT
if (err != RT_EOK)
{
EOUT("cmd_wait err in %s\n", __FUNCTION__);
return -RT_ETIMEOUT;
}
#endif
delay(3);
err = cmd_wait(0x52a, 0x80ff8000, 0xfff);
if (err != RT_EOK)
{
EOUT("cmd_wait err in %s\n", __FUNCTION__);
return -RT_ETIMEOUT;
}
#ifdef USE_TIMEOUT
to--;
if (!to)
{
EOUT("%s timeout\n", __FUNCTION__);
return -RT_ETIMEOUT;
}
#endif
}
while (*(RP)SDC_RESPONSE0 < 0X80008000);
cmd_data(0x49, 0X0, 0X0, 0x0, 0x0, 0Xfff);
cmd_data(0x6a, 0X0, 0X0, 0x0, 0x0, 0Xfff);
RCA = *(RP)SDC_RESPONSE0;
cmd_data(0xea, RCA, 0X0, 0x0, 0x0, 0Xfff);
return RT_EOK;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_err_t sd_readblock(rt_uint32_t address, rt_uint8_t *buf)
{
U32 complete, i;
rt_uint8_t temp;
rt_err_t err;
rt_uint32_t discard;
#ifdef USE_TIMEOUT
rt_uint32_t to = 10;
#endif
RT_UNUSED(discard);
//rt_kprintf("in readblock:%x\n",address);
//Clear all the errors & interrups
*(RP)DMAC_INTINTERRCLR |= 0x1;
*(RP)DMAC_INTINTERRCLR &= ~0x1;
*(RP)DMAC_INTTCCLEAR |= 0x1;
*(RP)DMAC_INTTCCLEAR &= ~0x1;
/*Clear read fifo*/
*(RP)(SDC_INTERRUPT_STATUS_MASK) = ~(0x1 << 9); //don't mask fifo empty
while ((*(RP)SDC_INTERRUPT_STATUS) & 0x200 != 0x200)
discard = *(RP)SDC_READ_BUFER_ACCESS;
/*DMAC2,word,size=0x80*/
*(RP)DMAC_C2SRCADDR = SDC_READ_BUFER_ACCESS;
*(RP)DMAC_C2DESTADDR = (rt_uint32_t)buf;
*(RP)DMAC_C2CONTROL = 0x20249b;
*(RP)DMAC_C2CONFIGURATION = 0x38d;
err = cmd_wait(0x6ea, RCA, 0xfff);
if (err != RT_EOK)
{
rt_set_errno(err);
return err;
}
err = cmd_wait(0xca, 0x2, 0xfff);
if (err != RT_EOK)
{
rt_set_errno(err);
return err;
}
err = cmd_response(0x22e, address, 0X1, 0x0200, 0x1, 0Xfff); //CMD17 4bit mode
if (err != RT_EOK)
{
rt_set_errno(err);
return err;
}
complete = *(RP)SDC_INTERRUPT_STATUS;
/*CRC*/
if ((complete | 0xfffffffd) != 0xfffffffd)
{
rt_kprintf("CRC ERROR!!!\n");
complete = *(RP)SDC_INTERRUPT_STATUS;
}
while (((*(RP)(DMAC_INTTCSTATUS)) & 0x4) != 0x4)
{
delay(10);
#ifdef USE_TIMEOUT
to--;
if (!to)
{
EOUT("%s TIMEOUT\n", __FUNCTION__);
return -RT_ETIMEOUT;
}
#endif
}
#ifdef USE_TIMEOUT
//DBOUT("%s timeout is %d\n",__FUNCTION__,to);
#endif
/*for the buf is big-endian we must reverse it*/
for (i = 0; i < 0x80; i++)
{
temp = buf[0];
buf[0] = buf[3];
buf[3] = temp;
temp = buf[1];
buf[1] = buf[2];
buf[2] = temp;
buf += 4;
}
return RT_EOK;
}
static rt_uint8_t sd_readmultiblock(rt_uint32_t address, rt_uint8_t *buf, rt_uint32_t size)
{
rt_int32_t index;
rt_uint8_t status = RT_EOK;
for (index = 0; index < size; index++)
{
status = sd_readblock(address + index * SECTOR_SIZE, buf + index * SECTOR_SIZE);
if (status != RT_EOK)
break;
}
return status;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_uint8_t sd_writeblock(rt_uint32_t address, rt_uint8_t *buf)
{
U32 complete;
rt_uint8_t temp;
rt_uint8_t *ptr = buf;
rt_err_t err;
#ifdef USE_TIMEOUT
rt_uint32_t to = 10;
#endif
int i;
rt_kprintf("in writeblock:%x\n", address);
/*for the buf is big-endian we must reverse it*/
for (i = 0; i < 0x80; i++)
{
temp = ptr[0];
ptr[0] = ptr[3];
ptr[3] = temp;
temp = ptr[1];
ptr[1] = ptr[2];
ptr[2] = temp;
ptr += 4;
}
//Clear all the errors & interrups
*(RP)DMAC_INTINTERRCLR |= 0x1;
*(RP)DMAC_INTINTERRCLR &= ~0x1;
*(RP)DMAC_INTTCCLEAR |= 0x1;
*(RP)DMAC_INTTCCLEAR &= ~0x1;
*(RP)DMAC_C2SRCADDR = (U32)buf;
*(RP)DMAC_C2DESTADDR = SDC_WRITE_BUFER_ACCESS;
*(RP)DMAC_C2CONTROL = 0x20149b;
*(RP)DMAC_C2CONFIGURATION = 0x380b;
err = cmd_wait(0x6ea, RCA, 0xfff);
if (err != RT_EOK)
{
rt_set_errno(err);
return err;
}
err = cmd_wait(0xca, 0x2, 0xfff);
if (err != RT_EOK)
{
rt_set_errno(err);
return err;
}
err = cmd_response(0x30e, address, 0X3, 0x0200, 0x1, 0Xfff); //CMD24 1bit mode
if (err != RT_EOK)
{
rt_set_errno(err);
return err;
}
complete = *(RP)SDC_INTERRUPT_STATUS;
if ((complete | 0xfffffffe) != 0xfffffffe)
{
//printf("CRC ERROR");
complete = *(RP)SDC_INTERRUPT_STATUS;
}
while (((*(RP)(DMAC_INTTCSTATUS)) & 0x4) != 0x4)
{
delay(10);
#ifdef USE_TIMEOUT
to--;
if (!to)
{
EOUT("%s TIMEOUT\n", __FUNCTION__);
}
#endif
}
#ifdef USE_TIMEOUT
//DBOUT("%s timeout is %d\n",__FUNCTION__,to);
#endif
return RT_EOK;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_err_t rt_sdcard_init(rt_device_t dev)
{
return 0;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
{
return 0;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_err_t rt_sdcard_close(rt_device_t dev)
{
return 0;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_err_t rt_sdcard_control(rt_device_t dev, int cmd, void *args)
{
rt_kprintf("cmd = %d\n", cmd);
RT_ASSERT(dev != RT_NULL);
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
{
struct rt_device_blk_geometry *geometry;
geometry = (struct rt_device_blk_geometry *)args;
if (geometry == RT_NULL) return -RT_ERROR;
geometry->bytes_per_sector = 512;
geometry->block_size = 0x200000;
//if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
// geometry->sector_count = (SDCardInfo.SD_csd.DeviceSize + 1) * 1024;
//else
geometry->sector_count = 0x200000;//SDCardInfo.CardCapacity/SDCardInfo.CardBlockSize;
}
return RT_EOK;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_ssize_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
rt_uint32_t retry = 3;
rt_uint8_t status;
rt_uint32_t index;
struct dfs_partition *part;
if (dev == RT_NULL)
{
rt_set_errno(-DFS_STATUS_EINVAL);
return 0;
}
part = (struct dfs_partition *)dev->user_data;
// take the semaphore
rt_sem_take(part->lock, RT_WAITING_FOREVER);
while (retry--)
{
if (((rt_uint32_t)buffer % 4 != 0) ||
((rt_uint32_t)buffer > 0x20080000))
{
for (index = 0; index < size; index++)
{
status = sd_readblock((part->offset + pos) * SECTOR_SIZE, ptr_sddev->sec_buf);
if (status != RT_EOK)
break;
rt_memcpy((rt_uint8_t *)buffer + (index * SECTOR_SIZE), ptr_sddev->sec_buf, SECTOR_SIZE);
}
}
else
{
for (index = 0; index < size; index++)
{
status = sd_readblock((pos) * SECTOR_SIZE, (rt_uint8_t *)buffer + index * SECTOR_SIZE);
if (status != RT_EOK)
break;
}
}
}
rt_sem_release(part->lock);
if (status == RT_EOK)
return size;
rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);
return 0;
}
/**
* This function will set a hook function, which will be invoked when a memory
* block is allocated from heap memory.
*
* @param hook the hook function
*/
static rt_ssize_t rt_sdcard_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
int i;
rt_uint8_t status;
struct dfs_partition *part;
if (dev == RT_NULL)
{
rt_set_errno(-DFS_STATUS_EINVAL);
return 0;
}
part = (struct dfs_partition *)dev->user_data;
rt_sem_take(part->lock, RT_WAITING_FOREVER);
if (((rt_uint32_t)buffer % 4 != 0) ||
((rt_uint32_t)buffer > 0x20080000))
{
rt_uint32_t index;
for (index = 0; index < size; index++)
{
rt_memcpy(ptr_sddev->sec_buf, ((rt_uint8_t *)buffer + index * SECTOR_SIZE), SECTOR_SIZE);
status = sd_writeblock((part->offset + index + pos) * SECTOR_SIZE, ptr_sddev->sec_buf);
}
}
else
{
for (i = 0; i < size; i++)
{
status = sd_writeblock((part->offset + i + pos) * SECTOR_SIZE,
(rt_uint8_t *)((rt_uint8_t *)buffer + i * SECTOR_SIZE));
if (status != RT_EOK) break;
}
}
rt_sem_release(part->lock);
if (status == RT_EOK)
return size;
rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);
return 0;
}
rt_err_t rt_hw_sdcard_exit()
{
if (ptr_sddev->device != RT_NULL)
rt_free(ptr_sddev->device);
if (ptr_sddev->part != RT_NULL)
rt_free(ptr_sddev->part);
if (ptr_sddev != RT_NULL)
rt_free(ptr_sddev);
return RT_EOK;
}
/**
* This function will init sd card
*
* @param void
*/
rt_err_t rt_hw_sdcard_init()
{
/*For test*/
rt_err_t err;
rt_int32_t i;
char dname[4];
char sname[8];
/*Initialize structure*/
ptr_sddev = (struct sd_device *)rt_malloc(sizeof(struct sd_device));
if (ptr_sddev == RT_NULL)
{
EOUT("Failed to allocate sdcard device structure\n");
return -RT_ENOMEM;
}
/*sdcard intialize*/
err = sd_init();
if (err != RT_EOK)
goto FAIL2;
/*set sector buffer*/
ptr_sddev->sec_buf = gsec_buf;
ptr_sddev->buf_size = SECTOR_SIZE;
ptr_sddev->sdc = (struct sd_c *)SD_BASE;
//DBOUT("allocate partition sector buffer OK!");
err = sd_readblock(0, ptr_sddev->sec_buf);
if (err != RT_EOK)
{
EOUT("read first block error\n");
goto FAIL2;
}
/*sdcard driver initialize*/
ptr_sddev->part = (struct dfs_partition *)rt_malloc(4 * sizeof(struct dfs_partition));
if (ptr_sddev->part == RT_NULL)
{
EOUT("allocate partition failed\n");
err = -RT_ENOMEM;
goto FAIL2;
}
/*alloc device buffer*/
ptr_sddev->device = (struct rt_device *)rt_malloc(4 * sizeof(struct rt_device));
if (ptr_sddev->device == RT_NULL)
{
EOUT("allocate device failed\n");
err = -RT_ENOMEM;
goto FAIL1;
}
ptr_sddev->part_num = 0;
err = sd_readblock(0, ptr_sddev->sec_buf);
if (err != RT_EOK)
{
EOUT("Read block 0 to initialize ERROR\n");
goto FAIL1;
}
for (i = 0; i < 4; i++)
{
/* get the first partition */
err = dfs_filesystem_get_partition(&(ptr_sddev->part[i]), ptr_sddev->sec_buf, i);
if (err == RT_EOK)
{
rt_snprintf(dname, 4, "sd%d", i);
rt_snprintf(sname, 8, "sem_sd%d", i);
ptr_sddev->part[i].lock = rt_sem_create(sname, 1, RT_IPC_FLAG_FIFO);
/* register sdcard device */
ptr_sddev->device[i].init = rt_sdcard_init;
ptr_sddev->device[i].open = rt_sdcard_open;
ptr_sddev->device[i].close = rt_sdcard_close;
ptr_sddev->device[i].read = rt_sdcard_read;
ptr_sddev->device[i].write = rt_sdcard_write;
ptr_sddev->device[i].control = rt_sdcard_control;
ptr_sddev->device[i].user_data = &ptr_sddev->part[i];
err = rt_device_register(&ptr_sddev->device[i], dname,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
if (err == RT_EOK)
ptr_sddev->part_num++;
}
else
{
if (i == 0)
{
/* there is no partition table */
ptr_sddev->part[0].offset = 0;
ptr_sddev->part[0].size = 0;
ptr_sddev->part[0].lock = rt_sem_create("sem_sd0", 1, RT_IPC_FLAG_FIFO);
/* register sdcard device */
ptr_sddev->device[0].init = rt_sdcard_init;
ptr_sddev->device[0].open = rt_sdcard_open;
ptr_sddev->device[0].close = rt_sdcard_close;
ptr_sddev->device[0].read = rt_sdcard_read;
ptr_sddev->device[0].write = rt_sdcard_write;
ptr_sddev->device[0].control = rt_sdcard_control;
ptr_sddev->device[0].user_data = &ptr_sddev->part[0];
err = rt_device_register(&ptr_sddev->device[0], "sd0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
if (err == RT_EOK)
ptr_sddev->part_num++;
break;
}
}
}
if (ptr_sddev->part_num == 0)
goto FAIL0;
return err;
FAIL0:
rt_free(ptr_sddev->device);
ptr_sddev->device = RT_NULL;
FAIL1:
rt_free(ptr_sddev->part);
ptr_sddev->part = RT_NULL;
FAIL2:
rt_free(ptr_sddev);
ptr_sddev = RT_NULL;
return err;
}
#endif
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