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mmc: rtsx: add support for pre_req and post_req

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Add support for non-blocking request, pre_req() runs dma_map_sg() and
post_req() runs dma_unmap_sg(). This patch can increase card read/write
speed, especially for high speed card and slow CPU(for some embedded
platform).

Users can get a great benefit from this patch. if CPU frequency is 800MHz,
SDR104 or DDR50 card read/write speed may increase more than 15%.

test results:
intel i3(800MHz - 2.3GHz), SD card clock 208MHz

performance mode(2.3GHz):
Before:
dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.18191 s, 56.8 MB/s
After:
 dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.09276 s, 61.4 MB/s

powersave mode(800MHz):
Before:
dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.29569 s, 51.8 MB/s
After:
dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.11218 s, 60.3 MB/s

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Micky Ching 2014-02-17 16:45:48 +08:00 committed by Chris Ball
parent abcc6b2943
commit c42deffd5b
4 changed files with 447 additions and 108 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

132
drivers/mfd/rtsx_pcr.c
View File

@ -338,58 +338,28 @@ int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read, int timeout)
{
struct completion trans_done;
u8 dir;
int err = 0, i, count;
int err = 0, count;
long timeleft;
unsigned long flags;
struct scatterlist *sg;
enum dma_data_direction dma_dir;
u32 val;
dma_addr_t addr;
unsigned int len;
dev_dbg(&(pcr->pci->dev), "--> %s: num_sg = %d\n", __func__, num_sg);
/* don't transfer data during abort processing */
if (pcr->remove_pci)
return -EINVAL;
if ((sglist == NULL) || (num_sg <= 0))
return -EINVAL;
if (read) {
dir = DEVICE_TO_HOST;
dma_dir = DMA_FROM_DEVICE;
} else {
dir = HOST_TO_DEVICE;
dma_dir = DMA_TO_DEVICE;
}
count = dma_map_sg(&(pcr->pci->dev), sglist, num_sg, dma_dir);
count = rtsx_pci_dma_map_sg(pcr, sglist, num_sg, read);
if (count < 1) {
dev_err(&(pcr->pci->dev), "scatterlist map failed\n");
return -EINVAL;
}
dev_dbg(&(pcr->pci->dev), "DMA mapping count: %d\n", count);
val = ((u32)(dir & 0x01) << 29) | TRIG_DMA | ADMA_MODE;
pcr->sgi = 0;
for_each_sg(sglist, sg, count, i) {
addr = sg_dma_address(sg);
len = sg_dma_len(sg);
rtsx_pci_add_sg_tbl(pcr, addr, len, i == count - 1);
}
spin_lock_irqsave(&pcr->lock, flags);
pcr->done = &trans_done;
pcr->trans_result = TRANS_NOT_READY;
init_completion(&trans_done);
rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr);
rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
spin_unlock_irqrestore(&pcr->lock, flags);
rtsx_pci_dma_transfer(pcr, sglist, count, read);
timeleft = wait_for_completion_interruptible_timeout(
&trans_done, msecs_to_jiffies(timeout));
if (timeleft <= 0) {
@ -413,7 +383,7 @@ out:
pcr->done = NULL;
spin_unlock_irqrestore(&pcr->lock, flags);
dma_unmap_sg(&(pcr->pci->dev), sglist, num_sg, dma_dir);
rtsx_pci_dma_unmap_sg(pcr, sglist, num_sg, read);
if ((err < 0) && (err != -ENODEV))
rtsx_pci_stop_cmd(pcr);
@ -425,6 +395,73 @@ out:
}
EXPORT_SYMBOL_GPL(rtsx_pci_transfer_data);
int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read)
{
enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (pcr->remove_pci)
return -EINVAL;
if ((sglist == NULL) || num_sg < 1)
return -EINVAL;
return dma_map_sg(&(pcr->pci->dev), sglist, num_sg, dir);
}
EXPORT_SYMBOL_GPL(rtsx_pci_dma_map_sg);
int rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read)
{
enum dma_data_direction dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (pcr->remove_pci)
return -EINVAL;
if (sglist == NULL || num_sg < 1)
return -EINVAL;
dma_unmap_sg(&(pcr->pci->dev), sglist, num_sg, dir);
return num_sg;
}
EXPORT_SYMBOL_GPL(rtsx_pci_dma_unmap_sg);
int rtsx_pci_dma_transfer(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int sg_count, bool read)
{
struct scatterlist *sg;
dma_addr_t addr;
unsigned int len;
int i;
u32 val;
u8 dir = read ? DEVICE_TO_HOST : HOST_TO_DEVICE;
unsigned long flags;
if (pcr->remove_pci)
return -EINVAL;
if ((sglist == NULL) || (sg_count < 1))
return -EINVAL;
val = ((u32)(dir & 0x01) << 29) | TRIG_DMA | ADMA_MODE;
pcr->sgi = 0;
for_each_sg(sglist, sg, sg_count, i) {
addr = sg_dma_address(sg);
len = sg_dma_len(sg);
rtsx_pci_add_sg_tbl(pcr, addr, len, i == sg_count - 1);
}
spin_lock_irqsave(&pcr->lock, flags);
rtsx_pci_writel(pcr, RTSX_HDBAR, pcr->host_sg_tbl_addr);
rtsx_pci_writel(pcr, RTSX_HDBCTLR, val);
spin_unlock_irqrestore(&pcr->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(rtsx_pci_dma_transfer);
int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len)
{
int err;
@ -836,6 +873,8 @@ static irqreturn_t rtsx_pci_isr(int irq, void *dev_id)
int_reg = rtsx_pci_readl(pcr, RTSX_BIPR);
/* Clear interrupt flag */
rtsx_pci_writel(pcr, RTSX_BIPR, int_reg);
dev_dbg(&pcr->pci->dev, "=========== BIPR 0x%8x ==========\n", int_reg);
if ((int_reg & pcr->bier) == 0) {
spin_unlock(&pcr->lock);
return IRQ_NONE;
@ -866,17 +905,28 @@ static irqreturn_t rtsx_pci_isr(int irq, void *dev_id)
}
if (int_reg & (NEED_COMPLETE_INT | DELINK_INT)) {
if (int_reg & (TRANS_FAIL_INT | DELINK_INT)) {
if (int_reg & (TRANS_FAIL_INT | DELINK_INT))
pcr->trans_result = TRANS_RESULT_FAIL;
if (pcr->done)
complete(pcr->done);
} else if (int_reg & TRANS_OK_INT) {
else if (int_reg & TRANS_OK_INT)
pcr->trans_result = TRANS_RESULT_OK;
if (pcr->done)
complete(pcr->done);
if (pcr->done)
complete(pcr->done);
if (int_reg & SD_EXIST) {
struct rtsx_slot *slot = &pcr->slots[RTSX_SD_CARD];
if (slot && slot->done_transfer)
slot->done_transfer(slot->p_dev);
}
if (int_reg & MS_EXIST) {
struct rtsx_slot *slot = &pcr->slots[RTSX_SD_CARD];
if (slot && slot->done_transfer)
slot->done_transfer(slot->p_dev);
}
}
if (pcr->card_inserted || pcr->card_removed)
schedule_delayed_work(&pcr->carddet_work,
msecs_to_jiffies(200));

416
drivers/mmc/host/rtsx_pci_sdmmc.c
View File

@ -31,14 +31,28 @@
#include <linux/mfd/rtsx_pci.h>
#include <asm/unaligned.h>
struct realtek_next {
unsigned int sg_count;
s32 cookie;
};
struct realtek_pci_sdmmc {
struct platform_device *pdev;
struct rtsx_pcr *pcr;
struct mmc_host *mmc;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
struct mutex host_mutex;
spinlock_t lock;
struct timer_list timer;
struct tasklet_struct cmd_tasklet;
struct tasklet_struct data_tasklet;
struct tasklet_struct finish_tasklet;
u8 rsp_type;
u8 rsp_len;
int sg_count;
u8 ssc_depth;
unsigned int clock;
bool vpclk;
@ -48,8 +62,13 @@ struct realtek_pci_sdmmc {
int power_state;
#define SDMMC_POWER_ON 1
#define SDMMC_POWER_OFF 0
struct realtek_next next_data;
};
static int sd_start_multi_rw(struct realtek_pci_sdmmc *host,
struct mmc_request *mrq);
static inline struct device *sdmmc_dev(struct realtek_pci_sdmmc *host)
{
return &(host->pdev->dev);
@ -86,6 +105,95 @@ static void sd_print_debug_regs(struct realtek_pci_sdmmc *host)
#define sd_print_debug_regs(host)
#endif /* DEBUG */
static void sd_isr_done_transfer(struct platform_device *pdev)
{
struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev);
spin_lock(&host->lock);
if (host->cmd)
tasklet_schedule(&host->cmd_tasklet);
if (host->data)
tasklet_schedule(&host->data_tasklet);
spin_unlock(&host->lock);
}
static void sd_request_timeout(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (!host->mrq) {
dev_err(sdmmc_dev(host), "error: no request exist\n");
goto out;
}
if (host->cmd)
host->cmd->error = -ETIMEDOUT;
if (host->data)
host->data->error = -ETIMEDOUT;
dev_dbg(sdmmc_dev(host), "timeout for request\n");
out:
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static void sd_finish_request(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
struct rtsx_pcr *pcr = host->pcr;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
unsigned long flags;
bool any_error;
spin_lock_irqsave(&host->lock, flags);
del_timer(&host->timer);
mrq = host->mrq;
if (!mrq) {
dev_err(sdmmc_dev(host), "error: no request need finish\n");
goto out;
}
cmd = mrq->cmd;
data = mrq->data;
any_error = (mrq->sbc && mrq->sbc->error) ||
(mrq->stop && mrq->stop->error) ||
(cmd && cmd->error) || (data && data->error);
if (any_error) {
rtsx_pci_stop_cmd(pcr);
sd_clear_error(host);
}
if (data) {
if (any_error)
data->bytes_xfered = 0;
else
data->bytes_xfered = data->blocks * data->blksz;
if (!data->host_cookie)
rtsx_pci_dma_unmap_sg(pcr, data->sg, data->sg_len,
data->flags & MMC_DATA_READ);
}
host->mrq = NULL;
host->cmd = NULL;
host->data = NULL;
out:
spin_unlock_irqrestore(&host->lock, flags);
mutex_unlock(&pcr->pcr_mutex);
mmc_request_done(host->mmc, mrq);
}
static int sd_read_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
u8 *buf, int buf_len, int timeout)
{
@ -203,8 +311,7 @@ static int sd_write_data(struct realtek_pci_sdmmc *host, u8 *cmd, u16 byte_cnt,
return 0;
}
static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
struct mmc_command *cmd)
static void sd_send_cmd(struct realtek_pci_sdmmc *host, struct mmc_command *cmd)
{
struct rtsx_pcr *pcr = host->pcr;
u8 cmd_idx = (u8)cmd->opcode;
@ -212,11 +319,14 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
int err = 0;
int timeout = 100;
int i;
u8 *ptr;
int stat_idx = 0;
u8 rsp_type;
int rsp_len = 5;
bool clock_toggled = false;
unsigned long flags;
if (host->cmd)
dev_err(sdmmc_dev(host), "error: cmd already exist\n");
host->cmd = cmd;
dev_dbg(sdmmc_dev(host), "%s: SD/MMC CMD %d, arg = 0x%08x\n",
__func__, cmd_idx, arg);
@ -251,6 +361,8 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
err = -EINVAL;
goto out;
}
host->rsp_type = rsp_type;
host->rsp_len = rsp_len;
if (rsp_type == SD_RSP_TYPE_R1b)
timeout = 3000;
@ -260,8 +372,6 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
0xFF, SD_CLK_TOGGLE_EN);
if (err < 0)
goto out;
clock_toggled = true;
}
rtsx_pci_init_cmd(pcr);
@ -285,25 +395,60 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
/* Read data from ping-pong buffer */
for (i = PPBUF_BASE2; i < PPBUF_BASE2 + 16; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
stat_idx = 16;
} else if (rsp_type != SD_RSP_TYPE_R0) {
/* Read data from SD_CMDx registers */
for (i = SD_CMD0; i <= SD_CMD4; i++)
rtsx_pci_add_cmd(pcr, READ_REG_CMD, (u16)i, 0, 0);
stat_idx = 5;
}
rtsx_pci_add_cmd(pcr, READ_REG_CMD, SD_STAT1, 0, 0);
err = rtsx_pci_send_cmd(pcr, timeout);
if (err < 0) {
sd_print_debug_regs(host);
sd_clear_error(host);
dev_dbg(sdmmc_dev(host),
"rtsx_pci_send_cmd error (err = %d)\n", err);
mod_timer(&host->timer, jiffies + msecs_to_jiffies(timeout));
spin_lock_irqsave(&pcr->lock, flags);
pcr->trans_result = TRANS_NOT_READY;
rtsx_pci_send_cmd_no_wait(pcr);
spin_unlock_irqrestore(&pcr->lock, flags);
return;
out:
cmd->error = err;
tasklet_schedule(&host->finish_tasklet);
}
static void sd_get_rsp(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
struct rtsx_pcr *pcr = host->pcr;
struct mmc_command *cmd;
int i, err = 0, stat_idx;
u8 *ptr, rsp_type;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
cmd = host->cmd;
host->cmd = NULL;
if (!cmd) {
dev_err(sdmmc_dev(host), "error: cmd not exist\n");
goto out;
}
spin_lock(&pcr->lock);
if (pcr->trans_result == TRANS_NO_DEVICE)
err = -ENODEV;
else if (pcr->trans_result != TRANS_RESULT_OK)
err = -EINVAL;
spin_unlock(&pcr->lock);
if (err < 0)
goto out;
rsp_type = host->rsp_type;
stat_idx = host->rsp_len;
if (rsp_type == SD_RSP_TYPE_R0) {
err = 0;
goto out;
@ -340,26 +485,106 @@ static void sd_send_cmd_get_rsp(struct realtek_pci_sdmmc *host,
cmd->resp[0]);
}
if (cmd == host->mrq->sbc) {
sd_send_cmd(host, host->mrq->cmd);
spin_unlock_irqrestore(&host->lock, flags);
return;
}
if (cmd == host->mrq->stop)
goto out;
if (cmd->data) {
sd_start_multi_rw(host, host->mrq);
spin_unlock_irqrestore(&host->lock, flags);
return;
}
out:
cmd->error = err;
if (err && clock_toggled)
rtsx_pci_write_register(pcr, SD_BUS_STAT,
SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
static int sd_pre_dma_transfer(struct realtek_pci_sdmmc *host,
struct mmc_data *data, struct realtek_next *next)
{
struct rtsx_pcr *pcr = host->pcr;
int read = data->flags & MMC_DATA_READ;
int sg_count = 0;
if (!next && data->host_cookie &&
data->host_cookie != host->next_data.cookie) {
dev_err(sdmmc_dev(host),
"error: invalid cookie data[%d] host[%d]\n",
data->host_cookie, host->next_data.cookie);
data->host_cookie = 0;
}
if (next || (!next && data->host_cookie != host->next_data.cookie))
sg_count = rtsx_pci_dma_map_sg(pcr,
data->sg, data->sg_len, read);
else
sg_count = host->next_data.sg_count;
if (next) {
next->sg_count = sg_count;
if (++next->cookie < 0)
next->cookie = 1;
data->host_cookie = next->cookie;
}
return sg_count;
}
static void sdmmc_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
bool is_first_req)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct mmc_data *data = mrq->data;
if (data->host_cookie) {
dev_err(sdmmc_dev(host),
"error: descard already cookie data[%d]\n",
data->host_cookie);
data->host_cookie = 0;
}
dev_dbg(sdmmc_dev(host), "dma sg prepared: %d\n",
sd_pre_dma_transfer(host, data, &host->next_data));
}
static void sdmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
int err)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct rtsx_pcr *pcr = host->pcr;
struct mmc_data *data = mrq->data;
int read = data->flags & MMC_DATA_READ;
rtsx_pci_dma_unmap_sg(pcr, data->sg, data->sg_len, read);
data->host_cookie = 0;
}
static int sd_start_multi_rw(struct realtek_pci_sdmmc *host,
struct mmc_request *mrq)
{
struct rtsx_pcr *pcr = host->pcr;
struct mmc_host *mmc = host->mmc;
struct mmc_card *card = mmc->card;
struct mmc_data *data = mrq->data;
int uhs = mmc_card_uhs(card);
int read = (data->flags & MMC_DATA_READ) ? 1 : 0;
int read = data->flags & MMC_DATA_READ;
u8 cfg2, trans_mode;
int err;
size_t data_len = data->blksz * data->blocks;
if (host->data)
dev_err(sdmmc_dev(host), "error: data already exist\n");
host->data = data;
if (read) {
cfg2 = SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_0;
@ -410,15 +635,54 @@ static int sd_rw_multi(struct realtek_pci_sdmmc *host, struct mmc_request *mrq)
rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END, SD_TRANSFER_END);
mod_timer(&host->timer, jiffies + 10 * HZ);
rtsx_pci_send_cmd_no_wait(pcr);
err = rtsx_pci_transfer_data(pcr, data->sg, data->sg_len, read, 10000);
err = rtsx_pci_dma_transfer(pcr, data->sg, host->sg_count, read);
if (err < 0) {
sd_clear_error(host);
return err;
data->error = err;
tasklet_schedule(&host->finish_tasklet);
}
return 0;
}
static void sd_finish_multi_rw(unsigned long host_addr)
{
struct realtek_pci_sdmmc *host = (struct realtek_pci_sdmmc *)host_addr;
struct rtsx_pcr *pcr = host->pcr;
struct mmc_data *data;
int err = 0;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (!host->data) {
dev_err(sdmmc_dev(host), "error: no data exist\n");
goto out;
}
return 0;
data = host->data;
host->data = NULL;
if (pcr->trans_result == TRANS_NO_DEVICE)
err = -ENODEV;
else if (pcr->trans_result != TRANS_RESULT_OK)
err = -EINVAL;
if (err < 0) {
data->error = err;
goto out;
}
if (!host->mrq->sbc && data->stop) {
sd_send_cmd(host, data->stop);
spin_unlock_irqrestore(&host->lock, flags);
return;
}
out:
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static inline void sd_enable_initial_mode(struct realtek_pci_sdmmc *host)
@ -637,6 +901,13 @@ static int sd_tuning_rx(struct realtek_pci_sdmmc *host, u8 opcode)
return 0;
}
static inline bool sd_use_muti_rw(struct mmc_command *cmd)
{
return mmc_op_multi(cmd->opcode) ||
(cmd->opcode == MMC_READ_SINGLE_BLOCK) ||
(cmd->opcode == MMC_WRITE_BLOCK);
}
static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
@ -645,6 +916,14 @@ static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
struct mmc_data *data = mrq->data;
unsigned int data_size = 0;
int err;
unsigned long flags;
mutex_lock(&pcr->pcr_mutex);
spin_lock_irqsave(&host->lock, flags);
if (host->mrq)
dev_err(sdmmc_dev(host), "error: request already exist\n");
host->mrq = mrq;
if (host->eject) {
cmd->error = -ENOMEDIUM;
@ -657,8 +936,6 @@ static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
goto finish;
}
mutex_lock(&pcr->pcr_mutex);
rtsx_pci_start_run(pcr);
rtsx_pci_switch_clock(pcr, host->clock, host->ssc_depth,
@ -667,46 +944,28 @@ static void sdmmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
rtsx_pci_write_register(pcr, CARD_SHARE_MODE,
CARD_SHARE_MASK, CARD_SHARE_48_SD);
mutex_lock(&host->host_mutex);
host->mrq = mrq;
mutex_unlock(&host->host_mutex);
if (mrq->data)
data_size = data->blocks * data->blksz;
if (!data_size || mmc_op_multi(cmd->opcode) ||
(cmd->opcode == MMC_READ_SINGLE_BLOCK) ||
(cmd->opcode == MMC_WRITE_BLOCK)) {
sd_send_cmd_get_rsp(host, cmd);
if (sd_use_muti_rw(cmd))
host->sg_count = sd_pre_dma_transfer(host, data, NULL);
if (!cmd->error && data_size) {
sd_rw_multi(host, mrq);
if (mmc_op_multi(cmd->opcode) && mrq->stop)
sd_send_cmd_get_rsp(host, mrq->stop);
}
} else {
sd_normal_rw(host, mrq);
}
if (mrq->data) {
if (cmd->error || data->error)
data->bytes_xfered = 0;
if (!data_size || sd_use_muti_rw(cmd)) {
if (mrq->sbc)
sd_send_cmd(host, mrq->sbc);
else
data->bytes_xfered = data->blocks * data->blksz;
sd_send_cmd(host, cmd);
spin_unlock_irqrestore(&host->lock, flags);
} else {
spin_unlock_irqrestore(&host->lock, flags);
sd_normal_rw(host, mrq);
tasklet_schedule(&host->finish_tasklet);
}
mutex_unlock(&pcr->pcr_mutex);
return;
finish:
if (cmd->error)
dev_dbg(sdmmc_dev(host), "cmd->error = %d\n", cmd->error);
mutex_lock(&host->host_mutex);
host->mrq = NULL;
mutex_unlock(&host->host_mutex);
mmc_request_done(mmc, mrq);
tasklet_schedule(&host->finish_tasklet);
spin_unlock_irqrestore(&host->lock, flags);
}
static int sd_set_bus_width(struct realtek_pci_sdmmc *host,
@ -1141,6 +1400,8 @@ out:
}
static const struct mmc_host_ops realtek_pci_sdmmc_ops = {
.pre_req = sdmmc_pre_req,
.post_req = sdmmc_post_req,
.request = sdmmc_request,
.set_ios = sdmmc_set_ios,
.get_ro = sdmmc_get_ro,
@ -1204,6 +1465,7 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
struct realtek_pci_sdmmc *host;
struct rtsx_pcr *pcr;
struct pcr_handle *handle = pdev->dev.platform_data;
unsigned long host_addr;
if (!handle)
return -ENXIO;
@ -1227,8 +1489,15 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
pcr->slots[RTSX_SD_CARD].p_dev = pdev;
pcr->slots[RTSX_SD_CARD].card_event = rtsx_pci_sdmmc_card_event;
mutex_init(&host->host_mutex);
host_addr = (unsigned long)host;
host->next_data.cookie = 1;
setup_timer(&host->timer, sd_request_timeout, host_addr);
tasklet_init(&host->cmd_tasklet, sd_get_rsp, host_addr);
tasklet_init(&host->data_tasklet, sd_finish_multi_rw, host_addr);
tasklet_init(&host->finish_tasklet, sd_finish_request, host_addr);
spin_lock_init(&host->lock);
pcr->slots[RTSX_SD_CARD].done_transfer = sd_isr_done_transfer;
realtek_init_host(host);
mmc_add_host(mmc);
@ -1241,6 +1510,8 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
struct realtek_pci_sdmmc *host = platform_get_drvdata(pdev);
struct rtsx_pcr *pcr;
struct mmc_host *mmc;
struct mmc_request *mrq;
unsigned long flags;
if (!host)
return 0;
@ -1248,22 +1519,33 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
pcr = host->pcr;
pcr->slots[RTSX_SD_CARD].p_dev = NULL;
pcr->slots[RTSX_SD_CARD].card_event = NULL;
pcr->slots[RTSX_SD_CARD].done_transfer = NULL;
mmc = host->mmc;
mrq = host->mrq;
mutex_lock(&host->host_mutex);
spin_lock_irqsave(&host->lock, flags);
if (host->mrq) {
dev_dbg(&(pdev->dev),
"%s: Controller removed during transfer\n",
mmc_hostname(mmc));
rtsx_pci_complete_unfinished_transfer(pcr);
if (mrq->sbc)
mrq->sbc->error = -ENOMEDIUM;
if (mrq->cmd)
mrq->cmd->error = -ENOMEDIUM;
if (mrq->stop)
mrq->stop->error = -ENOMEDIUM;
if (mrq->data)
mrq->data->error = -ENOMEDIUM;
host->mrq->cmd->error = -ENOMEDIUM;
if (host->mrq->stop)
host->mrq->stop->error = -ENOMEDIUM;
mmc_request_done(mmc, host->mrq);
tasklet_schedule(&host->finish_tasklet);
}
mutex_unlock(&host->host_mutex);
spin_unlock_irqrestore(&host->lock, flags);
del_timer_sync(&host->timer);
tasklet_kill(&host->cmd_tasklet);
tasklet_kill(&host->data_tasklet);
tasklet_kill(&host->finish_tasklet);
mmc_remove_host(mmc);
host->eject = true;

1
include/linux/mfd/rtsx_common.h
View File

@ -45,6 +45,7 @@ struct platform_device;
struct rtsx_slot {
struct platform_device *p_dev;
void (*card_event)(struct platform_device *p_dev);
void (*done_transfer)(struct platform_device *p_dev);
};
#endif

6
include/linux/mfd/rtsx_pci.h
View File

@ -943,6 +943,12 @@ void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr);
int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout);
int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read, int timeout);
int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read);
int rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int num_sg, bool read);
int rtsx_pci_dma_transfer(struct rtsx_pcr *pcr, struct scatterlist *sglist,
int sg_count, bool read);
int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len);
int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len);
int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card);