a1012112796/test_rtt_413
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

init project

Browse Source 
Signed-off-by: a1012112796 <1012112796@qq.com>
This commit is contained in:
a1012112796
2022-09-26 15:31:48 +08:00
commit 02210074ec
2260 changed files with 1056951 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
rt-thread/components/drivers/sdio/SConscript
+18
View File
@@ -0,0 +1,18 @@
Import('RTT_ROOT')
from building import *
cwd = GetCurrentDir()
src = Split("""
block_dev.c
mmcsd_core.c
sd.c
sdio.c
mmc.c
""")
# The set of source files associated with this SConscript file.
path = [cwd + '/../include']
group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_SDIO'], CPPPATH = path)
Return('group')
rt-thread/components/drivers/sdio/block_dev.c
+526
View File
@@ -0,0 +1,526 @@
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-07-25 weety first version
*/
#include <rtthread.h>
#include <dfs_fs.h>
#include <drivers/mmcsd_core.h>
#define DBG_TAG "SDIO"
#ifdef RT_SDIO_DEBUG
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO
#endif /* RT_SDIO_DEBUG */
#include <rtdbg.h>
#define BLK_MIN(a, b) ((a) < (b) ? (a) : (b))
struct mmcsd_blk_device
{
struct rt_mmcsd_card *card;
rt_list_t list;
struct rt_device dev;
struct dfs_partition part;
struct rt_device_blk_geometry geometry;
rt_size_t max_req_size;
};
#ifndef RT_MMCSD_MAX_PARTITION
#define RT_MMCSD_MAX_PARTITION 16
#endif
rt_int32_t mmcsd_num_wr_blocks(struct rt_mmcsd_card *card)
{
rt_int32_t err;
rt_uint32_t blocks;
struct rt_mmcsd_req req;
struct rt_mmcsd_cmd cmd;
struct rt_mmcsd_data data;
rt_uint32_t timeout_us;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = APP_CMD;
cmd.arg = card->rca << 16;
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_AC;
err = mmcsd_send_cmd(card->host, &cmd, 0);
if (err)
return -RT_ERROR;
if (!controller_is_spi(card->host) && !(cmd.resp[0] & R1_APP_CMD))
return -RT_ERROR;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SD_APP_SEND_NUM_WR_BLKS;
cmd.arg = 0;
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC;
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
data.timeout_ns = card->tacc_ns * 100;
data.timeout_clks = card->tacc_clks * 100;
timeout_us = data.timeout_ns / 1000;
timeout_us += data.timeout_clks * 1000 /
(card->host->io_cfg.clock / 1000);
if (timeout_us > 100000)
{
data.timeout_ns = 100000000;
data.timeout_clks = 0;
}
data.blksize = 4;
data.blks = 1;
data.flags = DATA_DIR_READ;
data.buf = &blocks;
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
req.cmd = &cmd;
req.data = &data;
mmcsd_send_request(card->host, &req);
if (cmd.err || data.err)
return -RT_ERROR;
return blocks;
}
static rt_err_t rt_mmcsd_req_blk(struct rt_mmcsd_card *card,
rt_uint32_t sector,
void *buf,
rt_size_t blks,
rt_uint8_t dir)
{
struct rt_mmcsd_cmd cmd, stop;
struct rt_mmcsd_data data;
struct rt_mmcsd_req req;
struct rt_mmcsd_host *host = card->host;
rt_uint32_t r_cmd, w_cmd;
mmcsd_host_lock(host);
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
rt_memset(&stop, 0, sizeof(struct rt_mmcsd_cmd));
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
req.cmd = &cmd;
req.data = &data;
cmd.arg = sector;
if (!(card->flags & CARD_FLAG_SDHC))
{
cmd.arg <<= 9;
}
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC;
data.blksize = SECTOR_SIZE;
data.blks = blks;
if (blks > 1)
{
if (!controller_is_spi(card->host) || !dir)
{
req.stop = &stop;
stop.cmd_code = STOP_TRANSMISSION;
stop.arg = 0;
stop.flags = RESP_SPI_R1B | RESP_R1B | CMD_AC;
}
r_cmd = READ_MULTIPLE_BLOCK;
w_cmd = WRITE_MULTIPLE_BLOCK;
}
else
{
req.stop = RT_NULL;
r_cmd = READ_SINGLE_BLOCK;
w_cmd = WRITE_BLOCK;
}
if (!dir)
{
cmd.cmd_code = r_cmd;
data.flags |= DATA_DIR_READ;
}
else
{
cmd.cmd_code = w_cmd;
data.flags |= DATA_DIR_WRITE;
}
mmcsd_set_data_timeout(&data, card);
data.buf = buf;
mmcsd_send_request(host, &req);
if (!controller_is_spi(card->host) && dir != 0)
{
do
{
rt_int32_t err;
cmd.cmd_code = SEND_STATUS;
cmd.arg = card->rca << 16;
cmd.flags = RESP_R1 | CMD_AC;
err = mmcsd_send_cmd(card->host, &cmd, 5);
if (err)
{
LOG_E("error %d requesting status", err);
break;
}
/*
* Some cards mishandle the status bits,
* so make sure to check both the busy
* indication and the card state.
*/
} while (!(cmd.resp[0] & R1_READY_FOR_DATA) ||
(R1_CURRENT_STATE(cmd.resp[0]) == 7));
}
mmcsd_host_unlock(host);
if (cmd.err || data.err || stop.err)
{
LOG_E("mmcsd request blocks error");
LOG_E("%d,%d,%d, 0x%08x,0x%08x",
cmd.err, data.err, stop.err, data.flags, sector);
return -RT_ERROR;
}
return RT_EOK;
}
static rt_err_t rt_mmcsd_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t rt_mmcsd_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t rt_mmcsd_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t rt_mmcsd_control(rt_device_t dev, int cmd, void *args)
{
struct mmcsd_blk_device *blk_dev = (struct mmcsd_blk_device *)dev->user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_BLK_GETGEOME:
rt_memcpy(args, &blk_dev->geometry, sizeof(struct rt_device_blk_geometry));
break;
default:
break;
}
return RT_EOK;
}
static rt_size_t rt_mmcsd_read(rt_device_t dev,
rt_off_t pos,
void *buffer,
rt_size_t size)
{
rt_err_t err = 0;
rt_size_t offset = 0;
rt_size_t req_size = 0;
rt_size_t remain_size = size;
void *rd_ptr = (void *)buffer;
struct mmcsd_blk_device *blk_dev = (struct mmcsd_blk_device *)dev->user_data;
struct dfs_partition *part = &blk_dev->part;
if (dev == RT_NULL)
{
rt_set_errno(-EINVAL);
return 0;
}
rt_sem_take(part->lock, RT_WAITING_FOREVER);
while (remain_size)
{
req_size = (remain_size > blk_dev->max_req_size) ? blk_dev->max_req_size : remain_size;
err = rt_mmcsd_req_blk(blk_dev->card, part->offset + pos + offset, rd_ptr, req_size, 0);
if (err)
break;
offset += req_size;
rd_ptr = (void *)((rt_uint8_t *)rd_ptr + (req_size << 9));
remain_size -= req_size;
}
rt_sem_release(part->lock);
/* the length of reading must align to SECTOR SIZE */
if (err)
{
rt_set_errno(-EIO);
return 0;
}
return size - remain_size;
}
static rt_size_t rt_mmcsd_write(rt_device_t dev,
rt_off_t pos,
const void *buffer,
rt_size_t size)
{
rt_err_t err = 0;
rt_size_t offset = 0;
rt_size_t req_size = 0;
rt_size_t remain_size = size;
void *wr_ptr = (void *)buffer;
struct mmcsd_blk_device *blk_dev = (struct mmcsd_blk_device *)dev->user_data;
struct dfs_partition *part = &blk_dev->part;
if (dev == RT_NULL)
{
rt_set_errno(-EINVAL);
return 0;
}
rt_sem_take(part->lock, RT_WAITING_FOREVER);
while (remain_size)
{
req_size = (remain_size > blk_dev->max_req_size) ? blk_dev->max_req_size : remain_size;
err = rt_mmcsd_req_blk(blk_dev->card, part->offset + pos + offset, wr_ptr, req_size, 1);
if (err)
break;
offset += req_size;
wr_ptr = (void *)((rt_uint8_t *)wr_ptr + (req_size << 9));
remain_size -= req_size;
}
rt_sem_release(part->lock);
/* the length of reading must align to SECTOR SIZE */
if (err)
{
rt_set_errno(-EIO);
return 0;
}
return size - remain_size;
}
static rt_int32_t mmcsd_set_blksize(struct rt_mmcsd_card *card)
{
struct rt_mmcsd_cmd cmd;
int err;
/* Block-addressed cards ignore MMC_SET_BLOCKLEN. */
if (card->flags & CARD_FLAG_SDHC)
return 0;
mmcsd_host_lock(card->host);
cmd.cmd_code = SET_BLOCKLEN;
cmd.arg = 512;
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_AC;
err = mmcsd_send_cmd(card->host, &cmd, 5);
mmcsd_host_unlock(card->host);
if (err)
{
LOG_E("MMCSD: unable to set block size to %d: %d", cmd.arg, err);
return -RT_ERROR;
}
return 0;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops mmcsd_blk_ops =
{
rt_mmcsd_init,
rt_mmcsd_open,
rt_mmcsd_close,
rt_mmcsd_read,
rt_mmcsd_write,
rt_mmcsd_control
};
#endif
static struct mmcsd_blk_device * rt_mmcsd_create_blkdev(struct rt_mmcsd_card *card, const char* dname, struct dfs_partition* psPart)
{
struct mmcsd_blk_device *blk_dev;
char sname[12];
blk_dev = rt_calloc(1, sizeof(struct mmcsd_blk_device));
if (!blk_dev)
{
LOG_E("mmcsd:malloc memory failed!");
return RT_NULL;
}
if (psPart != RT_NULL)
{
rt_memcpy(&blk_dev->part, psPart, sizeof(struct dfs_partition));
blk_dev->geometry.sector_count = psPart->size;
}
else
{
blk_dev->part.offset = 0;
blk_dev->part.size = 0;
blk_dev->geometry.sector_count = card->card_capacity * (1024 / 512);
}
blk_dev->geometry.bytes_per_sector = 1<<9;
blk_dev->geometry.block_size = card->card_blksize;
rt_snprintf(sname, sizeof(sname), "sem_%s", dname);
blk_dev->part.lock = rt_sem_create(sname, 1, RT_IPC_FLAG_FIFO);
blk_dev->max_req_size = BLK_MIN((card->host->max_dma_segs *
card->host->max_seg_size) >> 9,
(card->host->max_blk_count *
card->host->max_blk_size) >> 9);
/* register mmcsd device */
blk_dev->dev.type = RT_Device_Class_Block;
#ifdef RT_USING_DEVICE_OPS
blk_dev->dev.ops = &mmcsd_blk_ops;
#else
blk_dev->dev.init = rt_mmcsd_init;
blk_dev->dev.open = rt_mmcsd_open;
blk_dev->dev.close = rt_mmcsd_close;
blk_dev->dev.read = rt_mmcsd_read;
blk_dev->dev.write = rt_mmcsd_write;
blk_dev->dev.control = rt_mmcsd_control;
#endif
blk_dev->dev.user_data = blk_dev;
blk_dev->card = card;
rt_device_register(&blk_dev->dev, dname,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
/* Insert to list. */
rt_list_insert_after(&card->blk_devices, &blk_dev->list);
#ifdef RT_USING_DFS_MNTTABLE
if ( blk_dev )
{
LOG_I("try to mount file system!");
/* try to mount file system on this block device */
dfs_mount_device(&(blk_dev->dev));
}
#endif
return blk_dev;
}
rt_int32_t rt_mmcsd_blk_probe(struct rt_mmcsd_card *card)
{
rt_int32_t err = 0;
rt_err_t status;
rt_uint8_t *sector;
err = mmcsd_set_blksize(card);
if(err)
{
return err;
}
LOG_D("probe mmcsd block device!");
/* get the first sector to read partition table */
sector = (rt_uint8_t *)rt_malloc(SECTOR_SIZE);
if (sector == RT_NULL)
{
LOG_E("allocate partition sector buffer failed!");
return -RT_ENOMEM;
}
status = rt_mmcsd_req_blk(card, 0, sector, 1, 0);
if (status == RT_EOK)
{
rt_uint8_t i;
char dname[8];
struct dfs_partition part;
struct mmcsd_blk_device *blk_dev = RT_NULL;
rt_int32_t host_id = card->host->id;
/* Initial blk_device link-list. */
rt_list_init(&card->blk_devices);
for (i = 0; i < RT_MMCSD_MAX_PARTITION; i++)
{
/* Get the first partition */
status = dfs_filesystem_get_partition(&part, sector, i);
if (status == RT_EOK)
{
/* Given name is with allocated host id and its partition index. */
rt_snprintf(dname, sizeof(dname), "sd%dp%d", host_id, i);
blk_dev = rt_mmcsd_create_blkdev(card, (const char*)dname, &part);
if ( blk_dev == RT_NULL )
{
err = -RT_ENOMEM;
goto exit_rt_mmcsd_blk_probe;
}
}
else
{
break;
}
}
/* Always create the super node, given name is with allocated host id. */
rt_snprintf(dname, sizeof(dname), "sd%d", host_id);
blk_dev = rt_mmcsd_create_blkdev(card, (const char*)dname, RT_NULL);
if ( blk_dev == RT_NULL )
{
err = -RT_ENOMEM;
goto exit_rt_mmcsd_blk_probe;
}
}
else
{
LOG_E("read mmcsd first sector failed");
err = -RT_ERROR;
}
exit_rt_mmcsd_blk_probe:
/* release sector buffer */
rt_free(sector);
return err;
}
void rt_mmcsd_blk_remove(struct rt_mmcsd_card *card)
{
rt_list_t *l, *n;
struct mmcsd_blk_device *blk_dev;
for (l = (&card->blk_devices)->next, n = l->next; l != &card->blk_devices; l = n, n=n->next)
{
blk_dev = (struct mmcsd_blk_device *)rt_list_entry(l, struct mmcsd_blk_device, list);
if (blk_dev->card == card)
{
/* unmount file system */
const char * mounted_path = dfs_filesystem_get_mounted_path(&(blk_dev->dev));
if (mounted_path)
{
dfs_unmount(mounted_path);
LOG_D("unmount file system %s for device %s.\r\n", mounted_path, blk_dev->dev.parent.name);
}
rt_sem_delete(blk_dev->part.lock);
rt_device_unregister(&blk_dev->dev);
rt_list_remove(&blk_dev->list);
rt_free(blk_dev);
}
}
}
rt-thread/components/drivers/sdio/mmc.c
+619
View File
@@ -0,0 +1,619 @@
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2015-06-15 hichard first version
*/
#include <drivers/mmcsd_core.h>
#include <drivers/mmc.h>
#define DBG_TAG "SDIO"
#ifdef RT_SDIO_DEBUG
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO
#endif /* RT_SDIO_DEBUG */
#include <rtdbg.h>
static const rt_uint32_t tran_unit[] =
{
10000, 100000, 1000000, 10000000,
0, 0, 0, 0
};
static const rt_uint8_t tran_value[] =
{
0, 10, 12, 13, 15, 20, 25, 30,
35, 40, 45, 50, 55, 60, 70, 80,
};
static const rt_uint32_t tacc_uint[] =
{
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
};
static const rt_uint8_t tacc_value[] =
{
0, 10, 12, 13, 15, 20, 25, 30,
35, 40, 45, 50, 55, 60, 70, 80,
};
rt_inline rt_uint32_t GET_BITS(rt_uint32_t *resp,
rt_uint32_t start,
rt_uint32_t size)
{
const rt_int32_t __size = size;
const rt_uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1;
const rt_int32_t __off = 3 - ((start) / 32);
const rt_int32_t __shft = (start) & 31;
rt_uint32_t __res;
__res = resp[__off] >> __shft;
if (__size + __shft > 32)
__res |= resp[__off-1] << ((32 - __shft) % 32);
return __res & __mask;
}
/*
* Given a 128-bit response, decode to our card CSD structure.
*/
static rt_int32_t mmcsd_parse_csd(struct rt_mmcsd_card *card)
{
rt_uint32_t a, b;
struct rt_mmcsd_csd *csd = &card->csd;
rt_uint32_t *resp = card->resp_csd;
/*
* We only understand CSD structure v1.1 and v1.2.
* v1.2 has extra information in bits 15, 11 and 10.
* We also support eMMC v4.4 & v4.41.
*/
csd->csd_structure = GET_BITS(resp, 126, 2);
if (csd->csd_structure == 0) {
LOG_E("unrecognised CSD structure version %d!", csd->csd_structure);
return -RT_ERROR;
}
csd->taac = GET_BITS(resp, 112, 8);
csd->nsac = GET_BITS(resp, 104, 8);
csd->tran_speed = GET_BITS(resp, 96, 8);
csd->card_cmd_class = GET_BITS(resp, 84, 12);
csd->rd_blk_len = GET_BITS(resp, 80, 4);
csd->rd_blk_part = GET_BITS(resp, 79, 1);
csd->wr_blk_misalign = GET_BITS(resp, 78, 1);
csd->rd_blk_misalign = GET_BITS(resp, 77, 1);
csd->dsr_imp = GET_BITS(resp, 76, 1);
csd->c_size = GET_BITS(resp, 62, 12);
csd->c_size_mult = GET_BITS(resp, 47, 3);
csd->r2w_factor = GET_BITS(resp, 26, 3);
csd->wr_blk_len = GET_BITS(resp, 22, 4);
csd->wr_blk_partial = GET_BITS(resp, 21, 1);
csd->csd_crc = GET_BITS(resp, 1, 7);
card->card_blksize = 1 << csd->rd_blk_len;
card->tacc_clks = csd->nsac * 100;
card->tacc_ns = (tacc_uint[csd->taac&0x07] * tacc_value[(csd->taac&0x78)>>3] + 9) / 10;
card->max_data_rate = tran_unit[csd->tran_speed&0x07] * tran_value[(csd->tran_speed&0x78)>>3];
if (csd->wr_blk_len >= 9) {
a = GET_BITS(resp, 42, 5);
b = GET_BITS(resp, 37, 5);
card->erase_size = (a + 1) * (b + 1);
card->erase_size <<= csd->wr_blk_len - 9;
}
return 0;
}
/*
* Read extended CSD.
*/
static int mmc_get_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t **new_ext_csd)
{
void *ext_csd;
struct rt_mmcsd_req req;
struct rt_mmcsd_cmd cmd;
struct rt_mmcsd_data data;
*new_ext_csd = RT_NULL;
if (GET_BITS(card->resp_csd, 122, 4) < 4)
return 0;
/*
* As the ext_csd is so large and mostly unused, we don't store the
* raw block in mmc_card.
*/
ext_csd = rt_malloc(512);
if (!ext_csd) {
LOG_E("alloc memory failed when get ext csd!");
return -RT_ENOMEM;
}
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
req.cmd = &cmd;
req.data = &data;
cmd.cmd_code = SEND_EXT_CSD;
cmd.arg = 0;
/* NOTE HACK: the RESP_SPI_R1 is always correct here, but we
* rely on callers to never use this with "native" calls for reading
* CSD or CID. Native versions of those commands use the R2 type,
* not R1 plus a data block.
*/
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC;
data.blksize = 512;
data.blks = 1;
data.flags = DATA_DIR_READ;
data.buf = ext_csd;
/*
* Some cards require longer data read timeout than indicated in CSD.
* Address this by setting the read timeout to a "reasonably high"
* value. For the cards tested, 300ms has proven enough. If necessary,
* this value can be increased if other problematic cards require this.
*/
data.timeout_ns = 300000000;
data.timeout_clks = 0;
mmcsd_send_request(card->host, &req);
if (cmd.err)
return cmd.err;
if (data.err)
return data.err;
*new_ext_csd = ext_csd;
return 0;
}
/*
* Decode extended CSD.
*/
static int mmc_parse_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd)
{
rt_uint64_t card_capacity = 0;
if(card == RT_NULL || ext_csd == RT_NULL)
{
LOG_E("emmc parse ext csd fail, invaild args");
return -1;
}
card->flags |= CARD_FLAG_HIGHSPEED;
card->hs_max_data_rate = 52000000;
card_capacity = *((rt_uint32_t *)&ext_csd[EXT_CSD_SEC_CNT]);
card_capacity *= card->card_blksize;
card_capacity >>= 10; /* unit:KB */
card->card_capacity = (rt_uint32_t)card_capacity;
LOG_I("emmc card capacity %d KB.", card->card_capacity);
return 0;
}
/**
* mmc_switch - modify EXT_CSD register
* @card: the MMC card associated with the data transfer
* @set: cmd set values
* @index: EXT_CSD register index
* @value: value to program into EXT_CSD register
*
* Modifies the EXT_CSD register for selected card.
*/
static int mmc_switch(struct rt_mmcsd_card *card, rt_uint8_t set,
rt_uint8_t index, rt_uint8_t value)
{
int err;
struct rt_mmcsd_host *host = card->host;
struct rt_mmcsd_cmd cmd = {0};
cmd.cmd_code = SWITCH;
cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
(index << 16) | (value << 8) | set;
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_AC;
err = mmcsd_send_cmd(host, &cmd, 3);
if (err)
return err;
return 0;
}
static int mmc_compare_ext_csds(struct rt_mmcsd_card *card,
rt_uint8_t *ext_csd, rt_uint32_t bus_width)
{
rt_uint8_t *bw_ext_csd;
int err;
if (bus_width == MMCSD_BUS_WIDTH_1)
return 0;
err = mmc_get_ext_csd(card, &bw_ext_csd);
if (err || bw_ext_csd == RT_NULL) {
err = -RT_ERROR;
goto out;
}
/* only compare read only fields */
err = !((ext_csd[EXT_CSD_PARTITION_SUPPORT] == bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) &&
(ext_csd[EXT_CSD_ERASED_MEM_CONT] == bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) &&
(ext_csd[EXT_CSD_REV] == bw_ext_csd[EXT_CSD_REV]) &&
(ext_csd[EXT_CSD_STRUCTURE] == bw_ext_csd[EXT_CSD_STRUCTURE]) &&
(ext_csd[EXT_CSD_CARD_TYPE] == bw_ext_csd[EXT_CSD_CARD_TYPE]) &&
(ext_csd[EXT_CSD_S_A_TIMEOUT] == bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) &&
(ext_csd[EXT_CSD_HC_WP_GRP_SIZE] == bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) &&
(ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT] == bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) &&
(ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] == bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) &&
(ext_csd[EXT_CSD_SEC_TRIM_MULT] == bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) &&
(ext_csd[EXT_CSD_SEC_ERASE_MULT] == bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) &&
(ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT] == bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) &&
(ext_csd[EXT_CSD_TRIM_MULT] == bw_ext_csd[EXT_CSD_TRIM_MULT]) &&
(ext_csd[EXT_CSD_SEC_CNT + 0] == bw_ext_csd[EXT_CSD_SEC_CNT + 0]) &&
(ext_csd[EXT_CSD_SEC_CNT + 1] == bw_ext_csd[EXT_CSD_SEC_CNT + 1]) &&
(ext_csd[EXT_CSD_SEC_CNT + 2] == bw_ext_csd[EXT_CSD_SEC_CNT + 2]) &&
(ext_csd[EXT_CSD_SEC_CNT + 3] == bw_ext_csd[EXT_CSD_SEC_CNT + 3]) &&
(ext_csd[EXT_CSD_PWR_CL_52_195] == bw_ext_csd[EXT_CSD_PWR_CL_52_195]) &&
(ext_csd[EXT_CSD_PWR_CL_26_195] == bw_ext_csd[EXT_CSD_PWR_CL_26_195]) &&
(ext_csd[EXT_CSD_PWR_CL_52_360] == bw_ext_csd[EXT_CSD_PWR_CL_52_360]) &&
(ext_csd[EXT_CSD_PWR_CL_26_360] == bw_ext_csd[EXT_CSD_PWR_CL_26_360]) &&
(ext_csd[EXT_CSD_PWR_CL_200_195] == bw_ext_csd[EXT_CSD_PWR_CL_200_195]) &&
(ext_csd[EXT_CSD_PWR_CL_200_360] == bw_ext_csd[EXT_CSD_PWR_CL_200_360]) &&
(ext_csd[EXT_CSD_PWR_CL_DDR_52_195] == bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) &&
(ext_csd[EXT_CSD_PWR_CL_DDR_52_360] == bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) &&
(ext_csd[EXT_CSD_PWR_CL_DDR_200_360] == bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360]));
if (err)
err = -RT_ERROR;
out:
rt_free(bw_ext_csd);
return err;
}
/*
* Select the bus width amoung 4-bit and 8-bit(SDR).
* If the bus width is changed successfully, return the selected width value.
* Zero is returned instead of error value if the wide width is not supported.
*/
static int mmc_select_bus_width(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd)
{
rt_uint32_t ext_csd_bits[] = {
EXT_CSD_DDR_BUS_WIDTH_8,
EXT_CSD_DDR_BUS_WIDTH_4,
EXT_CSD_BUS_WIDTH_8,
EXT_CSD_BUS_WIDTH_4,
EXT_CSD_BUS_WIDTH_1
};
rt_uint32_t bus_widths[] = {
MMCSD_DDR_BUS_WIDTH_8,
MMCSD_DDR_BUS_WIDTH_4,
MMCSD_BUS_WIDTH_8,
MMCSD_BUS_WIDTH_4,
MMCSD_BUS_WIDTH_1
};
struct rt_mmcsd_host *host = card->host;
unsigned idx, trys, bus_width = 0;
int err = 0;
if (GET_BITS(card->resp_csd, 122, 4) < 4)
return 0;
/*
* Unlike SD, MMC cards dont have a configuration register to notify
* supported bus width. So bus test command should be run to identify
* the supported bus width or compare the ext csd values of current
* bus width and ext csd values of 1 bit mode read earlier.
*/
for (idx = 0; idx < sizeof(ext_csd_bits)/sizeof(rt_uint32_t); idx++) {
/*
* Host is capable of 8bit transfer, then switch
* the device to work in 8bit transfer mode. If the
* mmc switch command returns error then switch to
* 4bit transfer mode. On success set the corresponding
* bus width on the host. Meanwhile, mmc core would
* bail out early if corresponding bus capable wasn't
* set by drivers.
*/
if ((!((host->flags & MMCSD_BUSWIDTH_8) &&
(host->flags & MMCSD_SUP_HIGHSPEED_DDR)) &&
ext_csd_bits[idx] == EXT_CSD_DDR_BUS_WIDTH_8) ||
(!((host->flags & MMCSD_BUSWIDTH_4) &&
(host->flags & MMCSD_SUP_HIGHSPEED_DDR)) &&
ext_csd_bits[idx] == EXT_CSD_DDR_BUS_WIDTH_4) ||
(!(host->flags & MMCSD_BUSWIDTH_8) &&
ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_8) ||
(!(host->flags & MMCSD_BUSWIDTH_4) &&
ext_csd_bits[idx] == EXT_CSD_BUS_WIDTH_4))
continue;
if (host->flags & MMCSD_SUP_HIGHSPEED_DDR)
{
/* HS_TIMING must be set to "0x1" before setting BUS_WIDTH for dual-data-rate(DDR) operation */
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS);
if (err)
LOG_E("switch to speed mode width hight speed failed!");
}
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx]);
if (err)
continue;
bus_width = bus_widths[idx];
for(trys = 0; trys < 5; trys++){
mmcsd_set_bus_width(host, bus_width);
mmcsd_delay_ms(10);
err = mmc_compare_ext_csds(card, ext_csd, bus_width);
if(!err)
break;
}
if (!err) {
err = bus_width;
break;
} else {
switch(ext_csd_bits[idx]){
case EXT_CSD_DDR_BUS_WIDTH_8:
LOG_E("switch to bus width DDR 8 bit failed!");
break;
case EXT_CSD_DDR_BUS_WIDTH_4:
LOG_E("switch to bus width DDR 4 bit failed!");
break;
case EXT_CSD_BUS_WIDTH_8:
LOG_E("switch to bus width 8 bit failed!");
break;
case EXT_CSD_BUS_WIDTH_4:
LOG_E("switch to bus width 4 bit failed!");
break;
case EXT_CSD_BUS_WIDTH_1:
LOG_E("switch to bus width 1 bit failed!");
break;
default:
break;
}
}
}
return err;
}
rt_err_t mmc_send_op_cond(struct rt_mmcsd_host *host,
rt_uint32_t ocr, rt_uint32_t *rocr)
{
struct rt_mmcsd_cmd cmd;
rt_uint32_t i;
rt_err_t err = RT_EOK;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SEND_OP_COND;
cmd.arg = controller_is_spi(host) ? 0 : ocr;
cmd.flags = RESP_SPI_R1 | RESP_R3 | CMD_BCR;
for (i = 100; i; i--) {
err = mmcsd_send_cmd(host, &cmd, 3);
if (err)
break;
/* if we're just probing, do a single pass */
if (ocr == 0)
break;
/* otherwise wait until reset completes */
if (controller_is_spi(host)) {
if (!(cmd.resp[0] & R1_SPI_IDLE))
break;
} else {
if (cmd.resp[0] & CARD_BUSY)
break;
}
err = -RT_ETIMEOUT;
mmcsd_delay_ms(10); //delay 10ms
}
if (rocr && !controller_is_spi(host))
*rocr = cmd.resp[0];
return err;
}
static rt_err_t mmc_set_card_addr(struct rt_mmcsd_host *host, rt_uint32_t rca)
{
rt_err_t err;
struct rt_mmcsd_cmd cmd;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SET_RELATIVE_ADDR;
cmd.arg = rca << 16;
cmd.flags = RESP_R1 | CMD_AC;
err = mmcsd_send_cmd(host, &cmd, 3);
if (err)
return err;
return 0;
}
static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host,
rt_uint32_t ocr)
{
rt_int32_t err;
rt_uint32_t resp[4];
rt_uint32_t rocr = 0;
rt_uint32_t max_data_rate;
rt_uint8_t *ext_csd = RT_NULL;
struct rt_mmcsd_card *card = RT_NULL;
mmcsd_go_idle(host);
/* The extra bit indicates that we support high capacity */
err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
if (err)
goto err;
if (controller_is_spi(host))
{
err = mmcsd_spi_use_crc(host, 1);
if (err)
goto err1;
}
if (controller_is_spi(host))
err = mmcsd_get_cid(host, resp);
else
err = mmcsd_all_get_cid(host, resp);
if (err)
goto err;
card = rt_malloc(sizeof(struct rt_mmcsd_card));
if (!card)
{
LOG_E("malloc card failed!");
err = -RT_ENOMEM;
goto err;
}
rt_memset(card, 0, sizeof(struct rt_mmcsd_card));
card->card_type = CARD_TYPE_MMC;
card->host = host;
card->rca = 1;
rt_memcpy(card->resp_cid, resp, sizeof(card->resp_cid));
/*
* For native busses: get card RCA and quit open drain mode.
*/
if (!controller_is_spi(host))
{
err = mmc_set_card_addr(host, card->rca);
if (err)
goto err1;
mmcsd_set_bus_mode(host, MMCSD_BUSMODE_PUSHPULL);
}
err = mmcsd_get_csd(card, card->resp_csd);
if (err)
goto err1;
err = mmcsd_parse_csd(card);
if (err)
goto err1;
if (!controller_is_spi(host))
{
err = mmcsd_select_card(card);
if (err)
goto err1;
}
/*
* Fetch and process extended CSD.
*/
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
goto err1;
err = mmc_parse_ext_csd(card, ext_csd);
if (err)
goto err1;
/* If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
if (!(card->flags & CARD_FLAG_SDHC) && (rocr & (1<<30)))
card->flags |= CARD_FLAG_SDHC;
/* set bus speed */
if (card->flags & CARD_FLAG_HIGHSPEED)
max_data_rate = card->hs_max_data_rate;
else
max_data_rate = card->max_data_rate;
mmcsd_set_clock(host, max_data_rate);
/*switch bus width*/
mmc_select_bus_width(card, ext_csd);
host->card = card;
rt_free(ext_csd);
return 0;
err1:
rt_free(card);
err:
return err;
}
/*
* Starting point for mmc card init.
*/
rt_int32_t init_mmc(struct rt_mmcsd_host *host, rt_uint32_t ocr)
{
rt_int32_t err;
rt_uint32_t current_ocr;
/*
* We need to get OCR a different way for SPI.
*/
if (controller_is_spi(host))
{
err = mmcsd_spi_read_ocr(host, 0, &ocr);
if (err)
goto err;
}
current_ocr = mmcsd_select_voltage(host, ocr);
/*
* Can we support the voltage(s) of the card(s)?
*/
if (!current_ocr)
{
err = -RT_ERROR;
goto err;
}
/*
* Detect and init the card.
*/
err = mmcsd_mmc_init_card(host, current_ocr);
if (err)
goto err;
mmcsd_host_unlock(host);
err = rt_mmcsd_blk_probe(host->card);
if (err)
goto remove_card;
mmcsd_host_lock(host);
return 0;
remove_card:
mmcsd_host_lock(host);
rt_mmcsd_blk_remove(host->card);
rt_free(host->card);
host->card = RT_NULL;
err:
LOG_E("init MMC card failed!");
return err;
}
rt-thread/components/drivers/sdio/mmcsd_core.c
+754
View File
@@ -0,0 +1,754 @@
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-07-25 weety first version
*/
#include <rtthread.h>
#include <drivers/mmcsd_core.h>
#include <drivers/sd.h>
#include <drivers/mmc.h>
#include <drivers/sdio.h>
#define DBG_TAG "SDIO"
#ifdef RT_SDIO_DEBUG
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO
#endif /* RT_SDIO_DEBUG */
#include <rtdbg.h>
#ifndef RT_MMCSD_STACK_SIZE
#define RT_MMCSD_STACK_SIZE 1024
#endif
#ifndef RT_MMCSD_THREAD_PREORITY
#if (RT_THREAD_PRIORITY_MAX == 32)
#define RT_MMCSD_THREAD_PREORITY 0x16
#else
#define RT_MMCSD_THREAD_PREORITY 0x40
#endif
#endif
//static struct rt_semaphore mmcsd_sem;
static struct rt_thread mmcsd_detect_thread;
static rt_uint8_t mmcsd_stack[RT_MMCSD_STACK_SIZE];
static struct rt_mailbox mmcsd_detect_mb;
static rt_uint32_t mmcsd_detect_mb_pool[4];
static struct rt_mailbox mmcsd_hotpluge_mb;
static rt_uint32_t mmcsd_hotpluge_mb_pool[4];
static rt_uint32_t allocated_host_num = 0;
void mmcsd_host_lock(struct rt_mmcsd_host *host)
{
rt_mutex_take(&host->bus_lock, RT_WAITING_FOREVER);
}
void mmcsd_host_unlock(struct rt_mmcsd_host *host)
{
rt_mutex_release(&host->bus_lock);
}
void mmcsd_req_complete(struct rt_mmcsd_host *host)
{
rt_sem_release(&host->sem_ack);
}
void mmcsd_send_request(struct rt_mmcsd_host *host, struct rt_mmcsd_req *req)
{
do {
req->cmd->retries--;
req->cmd->err = 0;
req->cmd->mrq = req;
if (req->data)
{
req->cmd->data = req->data;
req->data->err = 0;
req->data->mrq = req;
if (req->stop)
{
req->data->stop = req->stop;
req->stop->err = 0;
req->stop->mrq = req;
}
}
host->ops->request(host, req);
rt_sem_take(&host->sem_ack, RT_WAITING_FOREVER);
} while(req->cmd->err && (req->cmd->retries > 0));
}
rt_int32_t mmcsd_send_cmd(struct rt_mmcsd_host *host,
struct rt_mmcsd_cmd *cmd,
int retries)
{
struct rt_mmcsd_req req;
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
rt_memset(cmd->resp, 0, sizeof(cmd->resp));
cmd->retries = retries;
req.cmd = cmd;
cmd->data = RT_NULL;
mmcsd_send_request(host, &req);
return cmd->err;
}
rt_int32_t mmcsd_go_idle(struct rt_mmcsd_host *host)
{
rt_int32_t err;
struct rt_mmcsd_cmd cmd;
if (!controller_is_spi(host))
{
mmcsd_set_chip_select(host, MMCSD_CS_HIGH);
mmcsd_delay_ms(1);
}
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = GO_IDLE_STATE;
cmd.arg = 0;
cmd.flags = RESP_SPI_R1 | RESP_NONE | CMD_BC;
err = mmcsd_send_cmd(host, &cmd, 0);
mmcsd_delay_ms(1);
if (!controller_is_spi(host))
{
mmcsd_set_chip_select(host, MMCSD_CS_IGNORE);
mmcsd_delay_ms(1);
}
return err;
}
rt_int32_t mmcsd_spi_read_ocr(struct rt_mmcsd_host *host,
rt_int32_t high_capacity,
rt_uint32_t *ocr)
{
struct rt_mmcsd_cmd cmd;
rt_int32_t err;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SPI_READ_OCR;
cmd.arg = high_capacity ? (1 << 30) : 0;
cmd.flags = RESP_SPI_R3;
err = mmcsd_send_cmd(host, &cmd, 0);
*ocr = cmd.resp[1];
return err;
}
rt_int32_t mmcsd_all_get_cid(struct rt_mmcsd_host *host, rt_uint32_t *cid)
{
rt_int32_t err;
struct rt_mmcsd_cmd cmd;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = ALL_SEND_CID;
cmd.arg = 0;
cmd.flags = RESP_R2 | CMD_BCR;
err = mmcsd_send_cmd(host, &cmd, 3);
if (err)
return err;
rt_memcpy(cid, cmd.resp, sizeof(rt_uint32_t) * 4);
return 0;
}
rt_int32_t mmcsd_get_cid(struct rt_mmcsd_host *host, rt_uint32_t *cid)
{
rt_int32_t err, i;
struct rt_mmcsd_req req;
struct rt_mmcsd_cmd cmd;
struct rt_mmcsd_data data;
rt_uint32_t *buf = RT_NULL;
if (!controller_is_spi(host))
{
if (!host->card)
return -RT_ERROR;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SEND_CID;
cmd.arg = host->card->rca << 16;
cmd.flags = RESP_R2 | CMD_AC;
err = mmcsd_send_cmd(host, &cmd, 3);
if (err)
return err;
rt_memcpy(cid, cmd.resp, sizeof(rt_uint32_t) * 4);
return 0;
}
buf = (rt_uint32_t *)rt_malloc(16);
if (!buf)
{
LOG_E("allocate memory failed!");
return -RT_ENOMEM;
}
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
req.cmd = &cmd;
req.data = &data;
cmd.cmd_code = SEND_CID;
cmd.arg = 0;
/* NOTE HACK: the RESP_SPI_R1 is always correct here, but we
* rely on callers to never use this with "native" calls for reading
* CSD or CID. Native versions of those commands use the R2 type,
* not R1 plus a data block.
*/
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC;
data.blksize = 16;
data.blks = 1;
data.flags = DATA_DIR_READ;
data.buf = buf;
/*
* The spec states that CSR and CID accesses have a timeout
* of 64 clock cycles.
*/
data.timeout_ns = 0;
data.timeout_clks = 64;
mmcsd_send_request(host, &req);
if (cmd.err || data.err)
{
rt_free(buf);
return -RT_ERROR;
}
for (i = 0;i < 4;i++)
cid[i] = buf[i];
rt_free(buf);
return 0;
}
rt_int32_t mmcsd_get_csd(struct rt_mmcsd_card *card, rt_uint32_t *csd)
{
rt_int32_t err, i;
struct rt_mmcsd_req req;
struct rt_mmcsd_cmd cmd;
struct rt_mmcsd_data data;
rt_uint32_t *buf = RT_NULL;
if (!controller_is_spi(card->host))
{
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SEND_CSD;
cmd.arg = card->rca << 16;
cmd.flags = RESP_R2 | CMD_AC;
err = mmcsd_send_cmd(card->host, &cmd, 3);
if (err)
return err;
rt_memcpy(csd, cmd.resp, sizeof(rt_uint32_t) * 4);
return 0;
}
buf = (rt_uint32_t*)rt_malloc(16);
if (!buf)
{
LOG_E("allocate memory failed!");
return -RT_ENOMEM;
}
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
req.cmd = &cmd;
req.data = &data;
cmd.cmd_code = SEND_CSD;
cmd.arg = 0;
/* NOTE HACK: the RESP_SPI_R1 is always correct here, but we
* rely on callers to never use this with "native" calls for reading
* CSD or CID. Native versions of those commands use the R2 type,
* not R1 plus a data block.
*/
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC;
data.blksize = 16;
data.blks = 1;
data.flags = DATA_DIR_READ;
data.buf = buf;
/*
* The spec states that CSR and CID accesses have a timeout
* of 64 clock cycles.
*/
data.timeout_ns = 0;
data.timeout_clks = 64;
mmcsd_send_request(card->host, &req);
if (cmd.err || data.err)
{
rt_free(buf);
return -RT_ERROR;
}
for (i = 0;i < 4;i++)
csd[i] = buf[i];
rt_free(buf);
return 0;
}
static rt_int32_t _mmcsd_select_card(struct rt_mmcsd_host *host,
struct rt_mmcsd_card *card)
{
rt_int32_t err;
struct rt_mmcsd_cmd cmd;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SELECT_CARD;
if (card)
{
cmd.arg = card->rca << 16;
cmd.flags = RESP_R1 | CMD_AC;
}
else
{
cmd.arg = 0;
cmd.flags = RESP_NONE | CMD_AC;
}
err = mmcsd_send_cmd(host, &cmd, 3);
if (err)
return err;
return 0;
}
rt_int32_t mmcsd_select_card(struct rt_mmcsd_card *card)
{
return _mmcsd_select_card(card->host, card);
}
rt_int32_t mmcsd_deselect_cards(struct rt_mmcsd_card *card)
{
return _mmcsd_select_card(card->host, RT_NULL);
}
rt_int32_t mmcsd_spi_use_crc(struct rt_mmcsd_host *host, rt_int32_t use_crc)
{
struct rt_mmcsd_cmd cmd;
rt_int32_t err;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SPI_CRC_ON_OFF;
cmd.flags = RESP_SPI_R1;
cmd.arg = use_crc;
err = mmcsd_send_cmd(host, &cmd, 0);
if (!err)
host->spi_use_crc = use_crc;
return err;
}
rt_inline void mmcsd_set_iocfg(struct rt_mmcsd_host *host)
{
struct rt_mmcsd_io_cfg *io_cfg = &host->io_cfg;
mmcsd_dbg("clock %uHz busmode %u powermode %u cs %u Vdd %u "
"width %u \n",
io_cfg->clock, io_cfg->bus_mode,
io_cfg->power_mode, io_cfg->chip_select, io_cfg->vdd,
io_cfg->bus_width);
host->ops->set_iocfg(host, io_cfg);
}
/*
* Control chip select pin on a host.
*/
void mmcsd_set_chip_select(struct rt_mmcsd_host *host, rt_int32_t mode)
{
host->io_cfg.chip_select = mode;
mmcsd_set_iocfg(host);
}
/*
* Sets the host clock to the highest possible frequency that
* is below "hz".
*/
void mmcsd_set_clock(struct rt_mmcsd_host *host, rt_uint32_t clk)
{
if (clk < host->freq_min)
{
LOG_W("clock too low!");
}
host->io_cfg.clock = clk;
mmcsd_set_iocfg(host);
}
/*
* Change the bus mode (open drain/push-pull) of a host.
*/
void mmcsd_set_bus_mode(struct rt_mmcsd_host *host, rt_uint32_t mode)
{
host->io_cfg.bus_mode = mode;
mmcsd_set_iocfg(host);
}
/*
* Change data bus width of a host.
*/
void mmcsd_set_bus_width(struct rt_mmcsd_host *host, rt_uint32_t width)
{
host->io_cfg.bus_width = width;
mmcsd_set_iocfg(host);
}
void mmcsd_set_data_timeout(struct rt_mmcsd_data *data,
const struct rt_mmcsd_card *card)
{
rt_uint32_t mult;
if (card->card_type == CARD_TYPE_SDIO)
{
data->timeout_ns = 1000000000; /* SDIO card 1s */
data->timeout_clks = 0;
return;
}
/*
* SD cards use a 100 multiplier rather than 10
*/
mult = (card->card_type == CARD_TYPE_SD) ? 100 : 10;
/*
* Scale up the multiplier (and therefore the timeout) by
* the r2w factor for writes.
*/
if (data->flags & DATA_DIR_WRITE)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->tacc_ns * mult;
data->timeout_clks = card->tacc_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
*/
if (card->card_type == CARD_TYPE_SD)
{
rt_uint32_t timeout_us, limit_us;
timeout_us = data->timeout_ns / 1000;
timeout_us += data->timeout_clks * 1000 /
(card->host->io_cfg.clock / 1000);
if (data->flags & DATA_DIR_WRITE)
/*
* The limit is really 250 ms, but that is
* insufficient for some crappy cards.
*/
limit_us = 300000;
else
limit_us = 100000;
/*
* SDHC cards always use these fixed values.
*/
if (timeout_us > limit_us || card->flags & CARD_FLAG_SDHC)
{
data->timeout_ns = limit_us * 1000; /* SDHC card fixed 250ms */
data->timeout_clks = 0;
}
}
if (controller_is_spi(card->host))
{
if (data->flags & DATA_DIR_WRITE)
{
if (data->timeout_ns < 1000000000)
data->timeout_ns = 1000000000; /* 1s */
}
else
{
if (data->timeout_ns < 100000000)
data->timeout_ns = 100000000; /* 100ms */
}
}
}
/*
* Mask off any voltages we don't support and select
* the lowest voltage
*/
rt_uint32_t mmcsd_select_voltage(struct rt_mmcsd_host *host, rt_uint32_t ocr)
{
int bit;
extern int __rt_ffs(int value);
ocr &= host->valid_ocr;
bit = __rt_ffs(ocr);
if (bit)
{
bit -= 1;
ocr &= 3 << bit;
host->io_cfg.vdd = bit;
mmcsd_set_iocfg(host);
}
else
{
LOG_W("host doesn't support card's voltages!");
ocr = 0;
}
return ocr;
}
static void mmcsd_power_up(struct rt_mmcsd_host *host)
{
int bit = __rt_fls(host->valid_ocr) - 1;
host->io_cfg.vdd = bit;
if (controller_is_spi(host))
{
host->io_cfg.chip_select = MMCSD_CS_HIGH;
host->io_cfg.bus_mode = MMCSD_BUSMODE_PUSHPULL;
}
else
{
host->io_cfg.chip_select = MMCSD_CS_IGNORE;
host->io_cfg.bus_mode = MMCSD_BUSMODE_OPENDRAIN;
}
host->io_cfg.power_mode = MMCSD_POWER_UP;
host->io_cfg.bus_width = MMCSD_BUS_WIDTH_1;
mmcsd_set_iocfg(host);
/*
* This delay should be sufficient to allow the power supply
* to reach the minimum voltage.
*/
mmcsd_delay_ms(10);
host->io_cfg.clock = host->freq_min;
host->io_cfg.power_mode = MMCSD_POWER_ON;
mmcsd_set_iocfg(host);
/*
* This delay must be at least 74 clock sizes, or 1 ms, or the
* time required to reach a stable voltage.
*/
mmcsd_delay_ms(10);
}
static void mmcsd_power_off(struct rt_mmcsd_host *host)
{
host->io_cfg.clock = 0;
host->io_cfg.vdd = 0;
if (!controller_is_spi(host))
{
host->io_cfg.bus_mode = MMCSD_BUSMODE_OPENDRAIN;
host->io_cfg.chip_select = MMCSD_CS_IGNORE;
}
host->io_cfg.power_mode = MMCSD_POWER_OFF;
host->io_cfg.bus_width = MMCSD_BUS_WIDTH_1;
mmcsd_set_iocfg(host);
}
int mmcsd_wait_cd_changed(rt_int32_t timeout)
{
struct rt_mmcsd_host *host;
if (rt_mb_recv(&mmcsd_hotpluge_mb, (rt_ubase_t *)&host, timeout) == RT_EOK)
{
if(host->card == RT_NULL)
{
return MMCSD_HOST_UNPLUGED;
}
else
{
return MMCSD_HOST_PLUGED;
}
}
return -RT_ETIMEOUT;
}
RTM_EXPORT(mmcsd_wait_cd_changed);
void mmcsd_change(struct rt_mmcsd_host *host)
{
rt_mb_send(&mmcsd_detect_mb, (rt_ubase_t)host);
}
void mmcsd_detect(void *param)
{
struct rt_mmcsd_host *host;
rt_uint32_t ocr;
rt_int32_t err;
while (1)
{
if (rt_mb_recv(&mmcsd_detect_mb, (rt_ubase_t *)&host, RT_WAITING_FOREVER) == RT_EOK)
{
if (host->card == RT_NULL)
{
mmcsd_host_lock(host);
mmcsd_power_up(host);
mmcsd_go_idle(host);
mmcsd_send_if_cond(host, host->valid_ocr);
err = sdio_io_send_op_cond(host, 0, &ocr);
if (!err)
{
if (init_sdio(host, ocr))
mmcsd_power_off(host);
mmcsd_host_unlock(host);
continue;
}
/*
* detect SD card
*/
err = mmcsd_send_app_op_cond(host, 0, &ocr);
if (!err)
{
if (init_sd(host, ocr))
mmcsd_power_off(host);
mmcsd_host_unlock(host);
rt_mb_send(&mmcsd_hotpluge_mb, (rt_ubase_t)host);
continue;
}
/*
* detect mmc card
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err)
{
if (init_mmc(host, ocr))
mmcsd_power_off(host);
mmcsd_host_unlock(host);
rt_mb_send(&mmcsd_hotpluge_mb, (rt_ubase_t)host);
continue;
}
mmcsd_host_unlock(host);
}
else
{
/* card removed */
mmcsd_host_lock(host);
if (host->card->sdio_function_num != 0)
{
LOG_W("unsupport sdio card plug out!");
}
else
{
rt_mmcsd_blk_remove(host->card);
rt_free(host->card);
host->card = RT_NULL;
}
mmcsd_host_unlock(host);
rt_mb_send(&mmcsd_hotpluge_mb, (rt_ubase_t)host);
}
}
}
}
struct rt_mmcsd_host *mmcsd_alloc_host(void)
{
struct rt_mmcsd_host *host;
host = rt_malloc(sizeof(struct rt_mmcsd_host));
if (!host)
{
LOG_E("alloc host failed");
return RT_NULL;
}
rt_memset(host, 0, sizeof(struct rt_mmcsd_host));
host->max_seg_size = 65535;
host->max_dma_segs = 1;
host->max_blk_size = 512;
host->max_blk_count = 4096;
host->id = allocated_host_num;
allocated_host_num++;
rt_mutex_init(&host->bus_lock, "sd_bus_lock", RT_IPC_FLAG_PRIO);
rt_sem_init(&host->sem_ack, "sd_ack", 0, RT_IPC_FLAG_FIFO);
return host;
}
void mmcsd_free_host(struct rt_mmcsd_host *host)
{
rt_mutex_detach(&host->bus_lock);
rt_sem_detach(&host->sem_ack);
rt_free(host);
}
int rt_mmcsd_core_init(void)
{
rt_err_t ret;
/* initialize detect SD cart thread */
/* initialize mailbox and create detect SD card thread */
ret = rt_mb_init(&mmcsd_detect_mb, "mmcsdmb",
&mmcsd_detect_mb_pool[0], sizeof(mmcsd_detect_mb_pool) / sizeof(mmcsd_detect_mb_pool[0]),
RT_IPC_FLAG_FIFO);
RT_ASSERT(ret == RT_EOK);
ret = rt_mb_init(&mmcsd_hotpluge_mb, "mmcsdhotplugmb",
&mmcsd_hotpluge_mb_pool[0], sizeof(mmcsd_hotpluge_mb_pool) / sizeof(mmcsd_hotpluge_mb_pool[0]),
RT_IPC_FLAG_FIFO);
RT_ASSERT(ret == RT_EOK);
ret = rt_thread_init(&mmcsd_detect_thread, "mmcsd_detect", mmcsd_detect, RT_NULL,
&mmcsd_stack[0], RT_MMCSD_STACK_SIZE, RT_MMCSD_THREAD_PREORITY, 20);
if (ret == RT_EOK)
{
rt_thread_startup(&mmcsd_detect_thread);
}
rt_sdio_init();
return 0;
}
INIT_PREV_EXPORT(rt_mmcsd_core_init);
rt-thread/components/drivers/sdio/sd.c
+706
View File
@@ -0,0 +1,706 @@
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-07-25 weety first version
*/
#include <drivers/mmcsd_core.h>
#include <drivers/sd.h>
#define DBG_TAG "SDIO"
#ifdef RT_SDIO_DEBUG
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO
#endif /* RT_SDIO_DEBUG */
#include <rtdbg.h>
static const rt_uint32_t tran_unit[] =
{
10000, 100000, 1000000, 10000000,
0, 0, 0, 0
};
static const rt_uint8_t tran_value[] =
{
0, 10, 12, 13, 15, 20, 25, 30,
35, 40, 45, 50, 55, 60, 70, 80,
};
static const rt_uint32_t tacc_uint[] =
{
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
};
static const rt_uint8_t tacc_value[] =
{
0, 10, 12, 13, 15, 20, 25, 30,
35, 40, 45, 50, 55, 60, 70, 80,
};
rt_inline rt_uint32_t GET_BITS(rt_uint32_t *resp,
rt_uint32_t start,
rt_uint32_t size)
{
const rt_int32_t __size = size;
const rt_uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1;
const rt_int32_t __off = 3 - ((start) / 32);
const rt_int32_t __shft = (start) & 31;
rt_uint32_t __res;
__res = resp[__off] >> __shft;
if (__size + __shft > 32)
__res |= resp[__off-1] << ((32 - __shft) % 32);
return __res & __mask;
}
static rt_int32_t mmcsd_parse_csd(struct rt_mmcsd_card *card)
{
struct rt_mmcsd_csd *csd = &card->csd;
rt_uint32_t *resp = card->resp_csd;
csd->csd_structure = GET_BITS(resp, 126, 2);
switch (csd->csd_structure)
{
case 0:
csd->taac = GET_BITS(resp, 112, 8);
csd->nsac = GET_BITS(resp, 104, 8);
csd->tran_speed = GET_BITS(resp, 96, 8);
csd->card_cmd_class = GET_BITS(resp, 84, 12);
csd->rd_blk_len = GET_BITS(resp, 80, 4);
csd->rd_blk_part = GET_BITS(resp, 79, 1);
csd->wr_blk_misalign = GET_BITS(resp, 78, 1);
csd->rd_blk_misalign = GET_BITS(resp, 77, 1);
csd->dsr_imp = GET_BITS(resp, 76, 1);
csd->c_size = GET_BITS(resp, 62, 12);
csd->c_size_mult = GET_BITS(resp, 47, 3);
csd->r2w_factor = GET_BITS(resp, 26, 3);
csd->wr_blk_len = GET_BITS(resp, 22, 4);
csd->wr_blk_partial = GET_BITS(resp, 21, 1);
csd->csd_crc = GET_BITS(resp, 1, 7);
card->card_blksize = 1 << csd->rd_blk_len;
card->card_capacity = (csd->c_size + 1) << (csd->c_size_mult + 2);
card->card_capacity *= card->card_blksize;
card->card_capacity >>= 10; /* unit:KB */
card->tacc_clks = csd->nsac * 100;
card->tacc_ns = (tacc_uint[csd->taac&0x07] * tacc_value[(csd->taac&0x78)>>3] + 9) / 10;
card->max_data_rate = tran_unit[csd->tran_speed&0x07] * tran_value[(csd->tran_speed&0x78)>>3];
break;
case 1:
card->flags |= CARD_FLAG_SDHC;
/*This field is fixed to 0Eh, which indicates 1 ms.
The host should not use TAAC, NSAC, and R2W_FACTOR
to calculate timeout and should uses fixed timeout
values for read and write operations*/
csd->taac = GET_BITS(resp, 112, 8);
csd->nsac = GET_BITS(resp, 104, 8);
csd->tran_speed = GET_BITS(resp, 96, 8);
csd->card_cmd_class = GET_BITS(resp, 84, 12);
csd->rd_blk_len = GET_BITS(resp, 80, 4);
csd->rd_blk_part = GET_BITS(resp, 79, 1);
csd->wr_blk_misalign = GET_BITS(resp, 78, 1);
csd->rd_blk_misalign = GET_BITS(resp, 77, 1);
csd->dsr_imp = GET_BITS(resp, 76, 1);
csd->c_size = GET_BITS(resp, 48, 22);
csd->r2w_factor = GET_BITS(resp, 26, 3);
csd->wr_blk_len = GET_BITS(resp, 22, 4);
csd->wr_blk_partial = GET_BITS(resp, 21, 1);
csd->csd_crc = GET_BITS(resp, 1, 7);
card->card_blksize = 512;
card->card_capacity = (csd->c_size + 1) * 512; /* unit:KB */
card->tacc_clks = 0;
card->tacc_ns = 0;
card->max_data_rate = tran_unit[csd->tran_speed&0x07] * tran_value[(csd->tran_speed&0x78)>>3];
break;
default:
LOG_E("unrecognised CSD structure version %d!", csd->csd_structure);
return -RT_ERROR;
}
LOG_I("SD card capacity %d KB.", card->card_capacity);
return 0;
}
static rt_int32_t mmcsd_parse_scr(struct rt_mmcsd_card *card)
{
struct rt_sd_scr *scr = &card->scr;
rt_uint32_t resp[4];
resp[3] = card->resp_scr[1];
resp[2] = card->resp_scr[0];
scr->sd_version = GET_BITS(resp, 56, 4);
scr->sd_bus_widths = GET_BITS(resp, 48, 4);
return 0;
}
static rt_int32_t mmcsd_switch(struct rt_mmcsd_card *card)
{
rt_int32_t err;
struct rt_mmcsd_host *host = card->host;
struct rt_mmcsd_req req;
struct rt_mmcsd_cmd cmd;
struct rt_mmcsd_data data;
rt_uint8_t *buf;
buf = (rt_uint8_t*)rt_malloc(64);
if (!buf)
{
LOG_E("alloc memory failed!");
return -RT_ENOMEM;
}
if (card->card_type != CARD_TYPE_SD)
goto err;
if (card->scr.sd_version < SCR_SPEC_VER_1)
goto err;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SD_SWITCH;
cmd.arg = 0x00FFFFF1;
cmd.flags = RESP_R1 | CMD_ADTC;
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
mmcsd_set_data_timeout(&data, card);
data.blksize = 64;
data.blks = 1;
data.flags = DATA_DIR_READ;
data.buf = (rt_uint32_t *)buf;
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
req.cmd = &cmd;
req.data = &data;
mmcsd_send_request(host, &req);
if (cmd.err || data.err)
{
goto err1;
}
if (buf[13] & 0x02)
card->hs_max_data_rate = 50000000;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SD_SWITCH;
cmd.arg = 0x80FFFFF1;
cmd.flags = RESP_R1 | CMD_ADTC;
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
mmcsd_set_data_timeout(&data, card);
data.blksize = 64;
data.blks = 1;
data.flags = DATA_DIR_READ;
data.buf = (rt_uint32_t *)buf;
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
req.cmd = &cmd;
req.data = &data;
mmcsd_send_request(host, &req);
if (cmd.err || data.err)
{
goto err1;
}
if ((buf[16] & 0xF) != 1)
{
LOG_I("switching card to high speed failed!");
goto err;
}
card->flags |= CARD_FLAG_HIGHSPEED;
err:
rt_free(buf);
return 0;
err1:
if (cmd.err)
err = cmd.err;
if (data.err)
err = data.err;
return err;
}
static rt_err_t mmcsd_app_cmd(struct rt_mmcsd_host *host,
struct rt_mmcsd_card *card)
{
rt_err_t err;
struct rt_mmcsd_cmd cmd = {0};
cmd.cmd_code = APP_CMD;
if (card)
{
cmd.arg = card->rca << 16;
cmd.flags = RESP_R1 | CMD_AC;
}
else
{
cmd.arg = 0;
cmd.flags = RESP_R1 | CMD_BCR;
}
err = mmcsd_send_cmd(host, &cmd, 0);
if (err)
return err;
/* Check that card supported application commands */
if (!controller_is_spi(host) && !(cmd.resp[0] & R1_APP_CMD))
return -RT_ERROR;
return RT_EOK;
}
rt_err_t mmcsd_send_app_cmd(struct rt_mmcsd_host *host,
struct rt_mmcsd_card *card,
struct rt_mmcsd_cmd *cmd,
int retry)
{
struct rt_mmcsd_req req;
int i;
rt_err_t err;
err = -RT_ERROR;
/*
* We have to resend MMC_APP_CMD for each attempt so
* we cannot use the retries field in mmc_command.
*/
for (i = 0; i <= retry; i++)
{
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
err = mmcsd_app_cmd(host, card);
if (err)
{
/* no point in retrying; no APP commands allowed */
if (controller_is_spi(host))
{
if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
break;
}
continue;
}
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
rt_memset(cmd->resp, 0, sizeof(cmd->resp));
req.cmd = cmd;
//cmd->data = NULL;
mmcsd_send_request(host, &req);
err = cmd->err;
if (!cmd->err)
break;
/* no point in retrying illegal APP commands */
if (controller_is_spi(host))
{
if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
break;
}
}
return err;
}
rt_err_t mmcsd_app_set_bus_width(struct rt_mmcsd_card *card, rt_int32_t width)
{
rt_err_t err;
struct rt_mmcsd_cmd cmd;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SD_APP_SET_BUS_WIDTH;
cmd.flags = RESP_R1 | CMD_AC;
switch (width)
{
case MMCSD_BUS_WIDTH_1:
cmd.arg = MMCSD_BUS_WIDTH_1;
break;
case MMCSD_BUS_WIDTH_4:
cmd.arg = MMCSD_BUS_WIDTH_4;
break;
default:
return -RT_ERROR;
}
err = mmcsd_send_app_cmd(card->host, card, &cmd, 3);
if (err)
return err;
return RT_EOK;
}
rt_err_t mmcsd_send_app_op_cond(struct rt_mmcsd_host *host,
rt_uint32_t ocr,
rt_uint32_t *rocr)
{
struct rt_mmcsd_cmd cmd;
rt_uint32_t i;
rt_err_t err = RT_EOK;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SD_APP_OP_COND;
if (controller_is_spi(host))
cmd.arg = ocr & (1 << 30); /* SPI only defines one bit */
else
cmd.arg = ocr;
cmd.flags = RESP_SPI_R1 | RESP_R3 | CMD_BCR;
for (i = 100; i; i--)
{
err = mmcsd_send_app_cmd(host, RT_NULL, &cmd, 3);
if (err)
break;
/* if we're just probing, do a single pass */
if (ocr == 0)
break;
/* otherwise wait until reset completes */
if (controller_is_spi(host))
{
if (!(cmd.resp[0] & R1_SPI_IDLE))
break;
}
else
{
if (cmd.resp[0] & CARD_BUSY)
break;
}
err = -RT_ETIMEOUT;
mmcsd_delay_ms(10); //delay 10ms
}
if (rocr && !controller_is_spi(host))
*rocr = cmd.resp[0];
return err;
}
/*
* To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND
* before SD_APP_OP_COND. This command will harmlessly fail for
* SD 1.0 cards.
*/
rt_err_t mmcsd_send_if_cond(struct rt_mmcsd_host *host, rt_uint32_t ocr)
{
struct rt_mmcsd_cmd cmd;
rt_err_t err;
rt_uint8_t pattern;
cmd.cmd_code = SD_SEND_IF_COND;
cmd.arg = ((ocr & 0xFF8000) != 0) << 8 | 0xAA;
cmd.flags = RESP_SPI_R7 | RESP_R7 | CMD_BCR;
err = mmcsd_send_cmd(host, &cmd, 0);
if (err)
return err;
if (controller_is_spi(host))
pattern = cmd.resp[1] & 0xFF;
else
pattern = cmd.resp[0] & 0xFF;
if (pattern != 0xAA)
return -RT_ERROR;
return RT_EOK;
}
rt_err_t mmcsd_get_card_addr(struct rt_mmcsd_host *host, rt_uint32_t *rca)
{
rt_err_t err;
struct rt_mmcsd_cmd cmd;
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
cmd.cmd_code = SD_SEND_RELATIVE_ADDR;
cmd.arg = 0;
cmd.flags = RESP_R6 | CMD_BCR;
err = mmcsd_send_cmd(host, &cmd, 3);
if (err)
return err;
*rca = cmd.resp[0] >> 16;
return RT_EOK;
}
#define be32_to_cpu(x) ((rt_uint32_t)( \
(((rt_uint32_t)(x) & (rt_uint32_t)0x000000ffUL) << 24) | \
(((rt_uint32_t)(x) & (rt_uint32_t)0x0000ff00UL) << 8) | \
(((rt_uint32_t)(x) & (rt_uint32_t)0x00ff0000UL) >> 8) | \
(((rt_uint32_t)(x) & (rt_uint32_t)0xff000000UL) >> 24)))
rt_int32_t mmcsd_get_scr(struct rt_mmcsd_card *card, rt_uint32_t *scr)
{
rt_int32_t err;
struct rt_mmcsd_req req;
struct rt_mmcsd_cmd cmd;
struct rt_mmcsd_data data;
err = mmcsd_app_cmd(card->host, card);
if (err)
return err;
rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));
req.cmd = &cmd;
req.data = &data;
cmd.cmd_code = SD_APP_SEND_SCR;
cmd.arg = 0;
cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC;
data.blksize = 8;
data.blks = 1;
data.flags = DATA_DIR_READ;
data.buf = scr;
mmcsd_set_data_timeout(&data, card);
mmcsd_send_request(card->host, &req);
if (cmd.err)
return cmd.err;
if (data.err)
return data.err;
scr[0] = be32_to_cpu(scr[0]);
scr[1] = be32_to_cpu(scr[1]);
return 0;
}
static rt_int32_t mmcsd_sd_init_card(struct rt_mmcsd_host *host,
rt_uint32_t ocr)
{
struct rt_mmcsd_card *card;
rt_int32_t err;
rt_uint32_t resp[4];
rt_uint32_t max_data_rate;
mmcsd_go_idle(host);
/*
* If SD_SEND_IF_COND indicates an SD 2.0
* compliant card and we should set bit 30
* of the ocr to indicate that we can handle
* block-addressed SDHC cards.
*/
err = mmcsd_send_if_cond(host, ocr);
if (!err)
ocr |= 1 << 30;
err = mmcsd_send_app_op_cond(host, ocr, RT_NULL);
if (err)
goto err;
if (controller_is_spi(host))
err = mmcsd_get_cid(host, resp);
else
err = mmcsd_all_get_cid(host, resp);
if (err)
goto err;
card = rt_malloc(sizeof(struct rt_mmcsd_card));
if (!card)
{
LOG_E("malloc card failed!");
err = -RT_ENOMEM;
goto err;
}
rt_memset(card, 0, sizeof(struct rt_mmcsd_card));
card->card_type = CARD_TYPE_SD;
card->host = host;
rt_memcpy(card->resp_cid, resp, sizeof(card->resp_cid));
/*
* For native busses: get card RCA and quit open drain mode.
*/
if (!controller_is_spi(host))
{
err = mmcsd_get_card_addr(host, &card->rca);
if (err)
goto err1;
mmcsd_set_bus_mode(host, MMCSD_BUSMODE_PUSHPULL);
}
err = mmcsd_get_csd(card, card->resp_csd);
if (err)
goto err1;
err = mmcsd_parse_csd(card);
if (err)
goto err1;
if (!controller_is_spi(host))
{
err = mmcsd_select_card(card);
if (err)
goto err1;
}
err = mmcsd_get_scr(card, card->resp_scr);
if (err)
goto err1;
mmcsd_parse_scr(card);
if (controller_is_spi(host))
{
err = mmcsd_spi_use_crc(host, 1);
if (err)
goto err1;
}
/*
* change SD card to high-speed, only SD2.0 spec
*/
err = mmcsd_switch(card);
if (err)
goto err1;
/* set bus speed */
max_data_rate = (unsigned int)-1;
if (card->flags & CARD_FLAG_HIGHSPEED)
{
if (max_data_rate > card->hs_max_data_rate)
max_data_rate = card->hs_max_data_rate;
}
else if (max_data_rate > card->max_data_rate)
{
max_data_rate = card->max_data_rate;
}
mmcsd_set_clock(host, max_data_rate);
/*switch bus width*/
if ((host->flags & MMCSD_BUSWIDTH_4) &&
(card->scr.sd_bus_widths & SD_SCR_BUS_WIDTH_4))
{
err = mmcsd_app_set_bus_width(card, MMCSD_BUS_WIDTH_4);
if (err)
goto err1;
mmcsd_set_bus_width(host, MMCSD_BUS_WIDTH_4);
}
host->card = card;
return 0;
err1:
rt_free(card);
err:
return err;
}
/*
* Starting point for SD card init.
*/
rt_int32_t init_sd(struct rt_mmcsd_host *host, rt_uint32_t ocr)
{
rt_int32_t err;
rt_uint32_t current_ocr;
/*
* We need to get OCR a different way for SPI.
*/
if (controller_is_spi(host))
{
mmcsd_go_idle(host);
err = mmcsd_spi_read_ocr(host, 0, &ocr);
if (err)
goto err;
}
if (ocr & VDD_165_195)
{
LOG_I(" SD card claims to support the "
"incompletely defined 'low voltage range'. This "
"will be ignored.");
ocr &= ~VDD_165_195;
}
current_ocr = mmcsd_select_voltage(host, ocr);
/*
* Can we support the voltage(s) of the card(s)?
*/
if (!current_ocr)
{
err = -RT_ERROR;
goto err;
}
/*
* Detect and init the card.
*/
err = mmcsd_sd_init_card(host, current_ocr);
if (err)
goto err;
mmcsd_host_unlock(host);
err = rt_mmcsd_blk_probe(host->card);
if (err)
goto remove_card;
mmcsd_host_lock(host);
return 0;
remove_card:
mmcsd_host_lock(host);
rt_mmcsd_blk_remove(host->card);
rt_free(host->card);
host->card = RT_NULL;
err:
LOG_D("init SD card failed!");
return err;
}
rt-thread/components/drivers/sdio/sdio.c
+1416
View File
File diff suppressed because it is too large Load Diff