/**
* mmc_suspend_host - suspend a host
* @host: mmc host
*/
int mmc_suspend_host(struct mmc_host *host)
{
int err = 0;
if (mmc_bus_needs_resume(host))
return 0;
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
/*
* A long response time is not acceptable for device drivers
* when doing suspend. Prevent mmc_claim_host in the suspend
* sequence, to potentially wait "forever" by trying to
* pre-claim the host.
*
* Skip try claim host for SDIO cards, doing so fixes deadlock
* conditions. The function driver suspend may again call into
* SDIO driver within a different context for enabling power
* save mode in the card and hence wait in mmc_claim_host
* causing deadlock.
*/
if (!(host->card && mmc_card_sdio(host->card)))
if (!mmc_try_claim_host(host))
err = -EBUSY;
if (!err) {
if (host->bus_ops->suspend)
err = host->bus_ops->suspend(host);
if (!(host->card && mmc_card_sdio(host->card)))
mmc_do_release_host(host);
if (err == -ENOSYS || !host->bus_ops->resume) {
/*
* We simply "remove" the card in this case.
* It will be redetected on resume.
*/
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_power_off(host);
mmc_release_host(host);
host->pm_flags = 0;
err = 0;
}
}
}
mmc_bus_put(host);
if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
mmc_power_off(host);
return err;
}
static ssize_t mmc_ops(struct file *file,
const char __user * buffer, size_t count, loff_t * ppos)
{
struct seq_file *s = (struct seq_file *)file->private_data;
struct mmc_host *host = s->private;
if (!strncmp(buffer, "d", 1)) {
printk(KERN_INFO "Dump SDHCI registers.");
host->ops->dump_regs(host);
} else if (!strncmp(buffer, "t", 1)) {
printk(KERN_INFO "Trigger one SDIO interrupt.\n");
if (!host->card && !mmc_card_sdio(host->card)) {
printk(KERN_INFO "\tNo SDIO card.");
} else {
host->ops->trigger_sdio_irq(host);
}
} else if (!strncmp(buffer, "r", 1)) {
printk(KERN_INFO "Rescan the bus.\n");
host->ops->rescan_bus(host);
} else {
printk(KERN_INFO "not supported\n");
mmc_ops_usage(NULL, NULL);
}
return count;
}
/**
* mmc_set_data_timeout - set the timeout for a data command
* @data: data phase for command
* @card: the MMC card associated with the data transfer
*
* Computes the data timeout parameters according to the
* correct algorithm given the card type.
*/
void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
{
unsigned int mult;
/*
* SDIO cards only define an upper 1 s limit on access.
*/
if (mmc_card_sdio(card)) {
data->timeout_ns = 1000000000;
data->timeout_clks = 0;
return;
}
/*
* SD cards use a 100 multiplier rather than 10
*/
mult = mmc_card_sd(card) ? 100 : 10;
/*
* Scale up the multiplier (and therefore the timeout) by
* the r2w factor for writes.
*/
if (data->flags & MMC_DATA_WRITE)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->csd.tacc_ns * mult;
data->timeout_clks = card->csd.tacc_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
*/
if (mmc_card_sd(card)) {
unsigned int timeout_us, limit_us;
timeout_us = data->timeout_ns / 1000;
timeout_us += data->timeout_clks * 1000 /
(card->host->ios.clock / 1000);
if (data->flags & MMC_DATA_WRITE)
/*
* The limit is really 250 ms, but that is
* insufficient for some crappy cards.
*/
#ifdef CONFIG_LGE_MMC_WORKAROUND
limit_us = 500000;
#else
limit_us = 300000;
#endif
else
limit_us = 100000;
/*
* SDHC cards always use these fixed values.
*/
if (timeout_us > limit_us || mmc_card_blockaddr(card)) {
data->timeout_ns = limit_us * 1000;
data->timeout_clks = 0;
}
}
static void sprd_sdio_card_remove(struct mmc_card *card) {
struct mmc_host *host = card->host;
if (mmc_card_sdio(card)) {
if(host->caps & MMC_CAP_POWER_OFF_CARD) {
pm_suspend_ignore_children(mmc_classdev(host), true);
pm_runtime_idle(mmc_classdev(host));
}
}
}
static void sprd_sdio_card_remove(struct mmc_card *card) {
struct mmc_host *host = card->host;
if (mmc_card_sdio(card)) {
if(host->caps & MMC_CAP_POWER_OFF_CARD) {
pm_suspend_ignore_children(mmc_classdev(host), true); // avoid mmc_attach_sdio->pm_runtime_set_active returning with error -16
pm_runtime_idle(mmc_classdev(host)); // make platform devices runtime suspendable
}
}
}
static void sdhci_host_wakeup_clear(struct sdhci_host *host)
{
if( (host->mmc->card )&& mmc_card_sdio(host->mmc->card) ){
disable_irq_wake(sdio_wakeup_irq);
free_irq(sdio_wakeup_irq, host);
gpio_free(HOST_WAKEUP_GPIO);
sdhci_set_gpio_to_data1(host);
}
return;
}
static int sprd_sdio_card_probe(struct mmc_card *card) {
struct mmc_host *host = card->host;
if (mmc_card_sdio(card)) {
if(host->caps & MMC_CAP_POWER_OFF_CARD) {
pm_runtime_no_callbacks(&card->dev);
pm_suspend_ignore_children(mmc_classdev(host), false);
return 0;
}
}
return -EINVAL;
}
static int sprd_sdio_card_probe(struct mmc_card *card) {
struct mmc_host *host = card->host;
if (mmc_card_sdio(card)) {
if(host->caps & MMC_CAP_POWER_OFF_CARD) {
pm_runtime_no_callbacks(&card->dev); // avoid default sdio bus runtime calling
pm_suspend_ignore_children(mmc_classdev(host), false); // paired with remove function
}
return 0;
}
return -EINVAL;
}
/**
* mmc_set_data_timeout - set the timeout for a data command
* @data: data phase for command
* @card: the MMC card associated with the data transfer
* @write: flag to differentiate reads from writes
*
* Computes the data timeout parameters according to the
* correct algorithm given the card type.
*/
void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card,
int write)
{
unsigned int mult;
/*
* SDIO cards only define an upper 1 s limit on access.
*/
if (mmc_card_sdio(card)) {
data->timeout_ns = 1000000000;
data->timeout_clks = 0;
return;
}
/*
* SD cards use a 100 multiplier rather than 10
*/
mult = mmc_card_sd(card) ? 100 : 10;
/*
* Scale up the multiplier (and therefore the timeout) by
* the r2w factor for writes.
*/
if (write)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->csd.tacc_ns * mult;
data->timeout_clks = card->csd.tacc_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
*/
if (mmc_card_sd(card)) {
unsigned int timeout_us, limit_us;
timeout_us = data->timeout_ns / 1000;
timeout_us += data->timeout_clks * 1000 /
(card->host->ios.clock / 1000);
if (write)
limit_us = 250000;
else
limit_us = 100000;
/*
* SDHC cards always use these fixed values.
*/
if (timeout_us > limit_us || mmc_card_blockaddr(card)) {
data->timeout_ns = limit_us * 1000;
data->timeout_clks = 0;
}
}
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
#if 0 // kimhyuns remove to recognize card
// for issue fix for ecim G0100145817
if(host->bus_dead )
#else
if((host->bus_dead) && (host->index!=0))
#endif
{
printk("No Suspend resume in case of bus-dead if init failed -- %s \r\n",__FUNCTION__);
return 0;
}
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if ( host->card && mmc_card_sdio(host->card)){ //ijihyun.jung -Sec VinsQ
printk("mmc%d:mmc_resume_host: skip mmc_power_up()\n", host->index);
} else {
mmc_power_up(host);
}
mmc_select_voltage(host, host->ocr);//cyj_dc23 -kernel 협의
BUG_ON(!host->bus_ops->resume);
host->bus_ops->resume(host);
}
mmc_bus_put(host);
/*
* We add a slight delay here so that resume can progress
* in parallel.
*/
if ( host->card && mmc_card_sdio(host->card)) { //ijihyun.jung -Sec VinsQ
printk("mmc%d:mmc_resume_host: skip mmc_detect_change()\n", host->index);
}
else{
printk("mmc%d:mmc_resume_host: excute mmc_detect_change()\n", host->index);
mmc_detect_change(host, 1);
}
return 0;
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!mmc_card_keep_power(host)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
/*
* Tell runtime PM core we just powered up the card,
* since it still believes the card is powered off.
* Note that currently runtime PM is only enabled
* for SDIO cards that are MMC_CAP_POWER_OFF_CARD
*/
if (mmc_card_sdio(host->card) &&
(host->caps & MMC_CAP_POWER_OFF_CARD)) {
pm_runtime_disable(&host->card->dev);
pm_runtime_set_active(&host->card->dev);
pm_runtime_enable(&host->card->dev);
}
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
}
}
/* clear flag */
host->pm_flags &= ~MMC_PM_KEEP_POWER;
mmc_bus_put(host);
return err;
}
static void sdhci_host_wakeup_set( struct sdhci_host *host )
{
unsigned int val;
int ret;
if( (host->mmc->card )&& mmc_card_sdio(host->mmc->card) ){
sdhci_set_data1_to_gpio(host);
gpio_request(HOST_WAKEUP_GPIO, "host_wakeup_irq");
sdio_wakeup_irq = gpio_to_irq(HOST_WAKEUP_GPIO);
gpio_direction_input(HOST_WAKEUP_GPIO);
ret = request_threaded_irq(sdio_wakeup_irq, sdhci_wakeup_irq_handler, NULL,
IRQF_TRIGGER_LOW | IRQF_ONESHOT, "host_wakeup_irq", host);
if(ret){
printk(KERN_ERR "%s, request threaded irq error:%d\n",
mmc_hostname(host->mmc), ret);
return;
}
enable_irq_wake(sdio_wakeup_irq);
}
return;
}
/**
* mmc_suspend_host - suspend a host
* @host: mmc host
* @state: suspend mode (PM_SUSPEND_xxx)
*/
int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
{
#if 0 // kimhyuns remove to recognize card
// for issue fix for ecim G0100145817
if(host->bus_dead )
#else
if((host->bus_dead) && (host->index!=0))
#endif
{
printk("No Suspend resume in case of bus-dead if init failed (%s) \r\n",__FUNCTION__);
return 0;
}
printk("Soni calling mmc_flush_scheduled_work (%s)",__FUNCTION__);
mmc_flush_scheduled_work();
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (host->bus_ops->suspend)
host->bus_ops->suspend(host);
if (!host->bus_ops->resume) {
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
mmc_bus_put(host);
if (host->card && mmc_card_sdio(host->card)) { //ijihyun.jung -Sec VinsQ
printk("mmc%d:mmc_suspend_host: skip mmc_power_off()\n", host->index);
} else {
mmc_power_off(host);
}
return 0;
}
/* Return value = 0 when resume is done
* Return value = 1 when suspend is done
*/
int mmc_auto_suspend(struct mmc_host *host, int suspend)
{
int status = -1;
unsigned long next_timeout, timeout;
unsigned long j = jiffies;
if (host->card && mmc_card_sdio(host->card))
return -1;
mutex_lock(&host->auto_suspend_mutex);
if (suspend) {
if (host->auto_suspend_state)
goto out;
timeout = host->last_busy + host->idle_timeout;
if (time_after_eq(j, timeout)) {
host->auto_suspend_state = 1;
host->ops->auto_suspend(host, 1); /* suspend host */
status = 1;
goto out;
}
} else {
host->last_busy = j;
if (host->auto_suspend_state) {
host->ops->auto_suspend(host, 0); /* resume host */
host->auto_suspend_state = 0;
status = 0;
}
}
if (host->idle_timeout >= 0) {
next_timeout = host->idle_timeout - (j - host->last_busy);
mmc_schedule_autosuspend(host, next_timeout);
}
out:
mutex_unlock(&host->auto_suspend_mutex);
return status;
}
inline static int sslsd_card_type(struct mmc_card *card)
/**<
this is a safe card type check as during initialization, there is no card
@param[in] card card
@return SSLSD_CARD_XXX bitmap flag
*/
{
int flag;
if (!card)
{
return 0;
}
flag = 0;
if (mmc_card_sdio(card))
{
flag = SSLSD_CARD_SDIO;
}
if (mmc_card_blockaddr(card))
{
flag |= SSLSD_CARD_BLKADR;
}
return flag;
}
/*
* Register a new MMC card with the driver model.
*/
int mmc_add_card(struct mmc_card *card)
{
int ret;
const char *type;
const char *uhs_bus_speed_mode = "";
static const char *const uhs_speeds[] = {
[UHS_SDR12_BUS_SPEED] = "SDR12 ",
[UHS_SDR25_BUS_SPEED] = "SDR25 ",
[UHS_SDR50_BUS_SPEED] = "SDR50 ",
[UHS_SDR104_BUS_SPEED] = "SDR104 ",
[UHS_DDR50_BUS_SPEED] = "DDR50 ",
};
dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SD-combo";
if (mmc_card_blockaddr(card))
type = "SDHC-combo";
break;
default:
type = "?";
break;
}
if (mmc_sd_card_uhs(card) &&
(card->sd_bus_speed < ARRAY_SIZE(uhs_speeds)))
uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed];
if (mmc_host_is_spi(card->host)) {
pr_info("%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_card_ddr_mode(card) ? "DDR " : "",
type);
} else {
EMMCSD_LOG_INFO("%s: new %s%s%s%s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_card_uhs(card) ? "ultra high speed " :
(mmc_card_highspeed(card) ? "high speed " : ""),
(mmc_card_hs400(card) ? "HS400 " : ""),
(mmc_card_hs200(card) ? "HS200 " : ""),
mmc_card_ddr_mode(card) ? "DDR " : "",
uhs_bus_speed_mode, type, card->rca);
}
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
mmc_init_context_info(card->host);
ret = pm_runtime_set_active(&card->dev);
if (ret)
pr_err("%s: %s: failed setting runtime active: ret: %d\n",
mmc_hostname(card->host), __func__, ret);
else if (!mmc_card_sdio(card) && mmc_use_core_runtime_pm(card->host))
pm_runtime_enable(&card->dev);
if (mmc_card_sdio(card)) {
ret = device_init_wakeup(&card->dev, true);
if (ret)
pr_err("%s: %s: failed to init wakeup: %d\n",
mmc_hostname(card->host), __func__, ret);
}
ret = device_add(&card->dev);
if (ret)
return ret;
device_enable_async_suspend(&card->dev);
if (mmc_use_core_runtime_pm(card->host) && !mmc_card_sdio(card)) {
card->rpm_attrib.show = show_rpm_delay;
card->rpm_attrib.store = store_rpm_delay;
sysfs_attr_init(&card->rpm_attrib.attr);
card->rpm_attrib.attr.name = "runtime_pm_timeout";
card->rpm_attrib.attr.mode = S_IRUGO | S_IWUSR;
ret = device_create_file(&card->dev, &card->rpm_attrib);
if (ret)
pr_err("%s: %s: creating runtime pm sysfs entry: failed: %d\n",
mmc_hostname(card->host), __func__, ret);
/* Default timeout is 10 seconds */
card->idle_timeout = RUNTIME_SUSPEND_DELAY_MS;
}
mmc_card_set_present(card);
return 0;
}
static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
{
struct variant_data *variant = host->variant;
unsigned int datactrl, timeout, irqmask;
unsigned long long clks;
void __iomem *base;
int blksz_bits;
dev_dbg(mmc_dev(host->mmc), "blksz %04x blks %04x flags %08x\n",
data->blksz, data->blocks, data->flags);
host->data = data;
host->size = data->blksz * data->blocks;
data->bytes_xfered = 0;
clks = (unsigned long long)data->timeout_ns * host->cclk;
do_div(clks, NSEC_PER_SEC);
timeout = data->timeout_clks + (unsigned int)clks;
base = host->base;
writel(timeout, base + MMCIDATATIMER);
writel(host->size, base + MMCIDATALENGTH);
blksz_bits = ffs(data->blksz) - 1;
BUG_ON(1 << blksz_bits != data->blksz);
if (variant->blksz_datactrl16)
datactrl = MCI_DPSM_ENABLE | (data->blksz << 16);
else if (variant->blksz_datactrl4)
datactrl = MCI_DPSM_ENABLE | (data->blksz << 4);
else
datactrl = MCI_DPSM_ENABLE | blksz_bits << 4;
if (data->flags & MMC_DATA_READ)
datactrl |= MCI_DPSM_DIRECTION;
if (host->mmc->card && mmc_card_sdio(host->mmc->card)) {
u32 clk;
datactrl |= variant->datactrl_mask_sdio;
/*
* The ST Micro variant for SDIO small write transfers
* needs to have clock H/W flow control disabled,
* otherwise the transfer will not start. The threshold
* depends on the rate of MCLK.
*/
if (variant->st_sdio && data->flags & MMC_DATA_WRITE &&
(host->size < 8 ||
(host->size <= 8 && host->mclk > 50000000)))
clk = host->clk_reg & ~variant->clkreg_enable;
else
clk = host->clk_reg | variant->clkreg_enable;
mmci_write_clkreg(host, clk);
}
if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 ||
host->mmc->ios.timing == MMC_TIMING_MMC_DDR52)
datactrl |= variant->datactrl_mask_ddrmode;
/*
* Attempt to use DMA operation mode, if this
* should fail, fall back to PIO mode
*/
if (!mmci_dma_start_data(host, datactrl))
return;
/* IRQ mode, map the SG list for CPU reading/writing */
mmci_init_sg(host, data);
if (data->flags & MMC_DATA_READ) {
irqmask = MCI_RXFIFOHALFFULLMASK;
/*
* If we have less than the fifo 'half-full' threshold to
* transfer, trigger a PIO interrupt as soon as any data
* is available.
*/
if (host->size < variant->fifohalfsize)
irqmask |= MCI_RXDATAAVLBLMASK;
} else {
/*
* We don't actually need to include "FIFO empty" here
* since its implicit in "FIFO half empty".
*/
irqmask = MCI_TXFIFOHALFEMPTYMASK;
}
mmci_write_datactrlreg(host, datactrl);
writel(readl(base + MMCIMASK0) & ~MCI_DATAENDMASK, base + MMCIMASK0);
mmci_set_mask1(host, irqmask);
}
/**
* mmc_init_queue - initialise a queue structure.
* @mq: mmc queue
* @card: mmc card to attach this queue
* @lock: queue lock
*
* Initialise a MMC card request queue.
*/
int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock)
{
struct mmc_host *host = card->host;
u64 limit = BLK_BOUNCE_HIGH;
int ret;
if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
limit = *mmc_dev(host)->dma_mask;
mq->card = card;
mq->queue = blk_init_queue(mmc_request, lock);
if (!mq->queue)
return -ENOMEM;
mq->queue->queuedata = mq;
mq->req = NULL;
blk_queue_prep_rq(mq->queue, mmc_prep_request);
blk_queue_ordered(mq->queue, QUEUE_ORDERED_DRAIN, NULL);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mq->queue);
#ifdef CONFIG_MMC_BLOCK_BOUNCE
if (host->max_hw_segs == 1) {
unsigned int bouncesz;
bouncesz = MMC_QUEUE_BOUNCESZ;
if (bouncesz > host->max_req_size)
bouncesz = host->max_req_size;
if (bouncesz > host->max_seg_size)
bouncesz = host->max_seg_size;
if (bouncesz > (host->max_blk_count * 512))
bouncesz = host->max_blk_count * 512;
if (bouncesz > 512) {
mq->bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
if (!mq->bounce_buf) {
printk(KERN_WARNING "%s: unable to "
"allocate bounce buffer\n",
mmc_card_name(card));
}
}
if (mq->bounce_buf) {
blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_ANY);
blk_queue_max_sectors(mq->queue, bouncesz / 512);
blk_queue_max_phys_segments(mq->queue, bouncesz / 512);
blk_queue_max_hw_segments(mq->queue, bouncesz / 512);
blk_queue_max_segment_size(mq->queue, bouncesz);
mq->sg = kmalloc(sizeof(struct scatterlist),
GFP_KERNEL);
if (!mq->sg) {
ret = -ENOMEM;
goto cleanup_queue;
}
sg_init_table(mq->sg, 1);
mq->bounce_sg = kmalloc(sizeof(struct scatterlist) *
bouncesz / 512, GFP_KERNEL);
if (!mq->bounce_sg) {
ret = -ENOMEM;
goto cleanup_queue;
}
sg_init_table(mq->bounce_sg, bouncesz / 512);
}
}
#endif
if (!mq->bounce_buf) {
blk_queue_bounce_limit(mq->queue, limit);
blk_queue_max_sectors(mq->queue,
min(host->max_blk_count, host->max_req_size / 512));
blk_queue_max_phys_segments(mq->queue, host->max_phys_segs);
blk_queue_max_hw_segments(mq->queue, host->max_hw_segs);
blk_queue_max_segment_size(mq->queue, host->max_seg_size);
mq->sg = kmalloc(sizeof(struct scatterlist) *
host->max_phys_segs, GFP_KERNEL);
if (!mq->sg) {
ret = -ENOMEM;
goto cleanup_queue;
}
sg_init_table(mq->sg, host->max_phys_segs);
}
init_MUTEX(&mq->thread_sem);
if (is_svlte_type_mmc_card(card))
mq->thread = kthread_run(mmc_queue_thread, mq, "svlte-qd");
else if (mmc_card_sd(card))
mq->thread = kthread_run(mmc_queue_thread, mq, "sd-qd");
else if (mmc_card_mmc(card))
mq->thread = kthread_run(mmc_queue_thread, mq, "emmc-qd");
else if (mmc_card_sdio(card))
mq->thread = kthread_run(mmc_queue_thread, mq, "sdio-qd");
else
mq->thread = kthread_run(mmc_queue_thread, mq, "mmcqd");
if (IS_ERR(mq->thread)) {
ret = PTR_ERR(mq->thread);
goto free_bounce_sg;
}
return 0;
free_bounce_sg:
if (mq->bounce_sg)
kfree(mq->bounce_sg);
mq->bounce_sg = NULL;
cleanup_queue:
if (mq->sg)
kfree(mq->sg);
mq->sg = NULL;
if (mq->bounce_buf)
kfree(mq->bounce_buf);
mq->bounce_buf = NULL;
blk_cleanup_queue(mq->queue);
return ret;
}
/*
* This hook just adds a quirk for all sdio devices
*/
static void add_quirk_for_sdio_devices(struct mmc_card *card, int data)
{
if (mmc_card_sdio(card))
card->quirks |= data;
}
/**
*
* added this from linux 3.10 to get better performance for 64 gb sd cards cheers Jukkaman
* mmc_set_data_timeout - set the timeout for a data command
* @data: data phase for command
* @card: the MMC card associated with the data transfer
*
* Computes the data timeout parameters according to the
* correct algorithm given the card type.
*/
void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
{
unsigned int mult;
/*
* SDIO cards only define an upper 1 s limit on access.
*/
if (mmc_card_sdio(card)) {
data->timeout_ns = 1000000000;
data->timeout_clks = 0;
return;
}
/*
* SD cards use a 100 multiplier rather than 10
*/
mult = mmc_card_sd(card) ? 100 : 10;
/*
* Scale up the multiplier (and therefore the timeout) by
* the r2w factor for writes.
*/
if (data->flags & MMC_DATA_WRITE)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->csd.tacc_ns * mult;
data->timeout_clks = card->csd.tacc_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
*/
if (mmc_card_sd(card)) {
unsigned int timeout_us, limit_us;
timeout_us = data->timeout_ns / 1000;
if (mmc_host_clk_rate(card->host))
timeout_us += data->timeout_clks * 1000 /
(mmc_host_clk_rate(card->host) / 1000);
if (data->flags & MMC_DATA_WRITE)
/*
* The MMC spec "It is strongly recommended
* for hosts to implement more than 500ms
* timeout value even if the card indicates
* the 250ms maximum busy length." Even the
* previous value of 300ms is known to be
* insufficient for some cards.
*/
limit_us = 3000000;
else
limit_us = 100000;
/*
* SDHC cards always use these fixed values.
*/
if (timeout_us > limit_us || mmc_card_blockaddr(card)) {
data->timeout_ns = limit_us * 1000;
data->timeout_clks = 0;
}
}
/*
* 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.
*/
if (mmc_card_long_read_time(card) && data->flags & MMC_DATA_READ) {
data->timeout_ns = 300000000;
data->timeout_clks = 0;
}
/*
* Some cards need very high timeouts if driven in SPI mode.
* The worst observed timeout was 900ms after writing a
* continuous stream of data until the internal logic
* overflowed.
*/
if (mmc_host_is_spi(card->host)) {
if (data->flags & MMC_DATA_WRITE) {
if (data->timeout_ns < 1000000000)
data->timeout_ns = 1000000000; /* 1s */
} else {
if (data->timeout_ns < 100000000)
data->timeout_ns = 100000000; /* 100ms */
}
}
}
/**
* mmc_set_data_timeout - set the timeout for a data command
* @data: data phase for command
* @card: the MMC card associated with the data transfer
*
* Computes the data timeout parameters according to the
* correct algorithm given the card type.
*/
void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
{
unsigned int mult;
/*
* SDIO cards only define an upper 1 s limit on access.
*/
if (mmc_card_sdio(card)) {
data->timeout_ns = 1000000000;
data->timeout_clks = 0;
return;
}
/*
* SD cards use a 100 multiplier rather than 10
*/
mult = mmc_card_sd(card) ? 100 : 10;
/*
* Scale up the multiplier (and therefore the timeout) by
* the r2w factor for writes.
*/
if (data->flags & MMC_DATA_WRITE)
mult <<= card->csd.r2w_factor;
data->timeout_ns = card->csd.tacc_ns * mult;
data->timeout_clks = card->csd.tacc_clks * mult;
/*
* SD cards also have an upper limit on the timeout.
*/
if (mmc_card_sd(card)) {
unsigned int timeout_us, limit_us;
timeout_us = data->timeout_ns / 1000;
timeout_us += data->timeout_clks * 1000 /
(card->host->ios.clock / 1000);
if (data->flags & MMC_DATA_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 || mmc_card_blockaddr(card)) {
data->timeout_ns = limit_us * 1000;
data->timeout_clks = 0;
}
}
/*
* Some cards need very high timeouts if driven in SPI mode.
* The worst observed timeout was 900ms after writing a
* continuous stream of data until the internal logic
* overflowed.
*/
if (mmc_host_is_spi(card->host)) {
if (data->flags & MMC_DATA_WRITE) {
if (data->timeout_ns < 1000000000)
data->timeout_ns = 1000000000; /* 1s */
} else {
if (data->timeout_ns < 100000000)
data->timeout_ns = 100000000; /* 100ms */
}
}
}
/*
* Register a new MMC card with the driver model.
*/
int mmc_add_card(struct mmc_card *card)
{
int ret;
const char *type;
const char *uhs_bus_speed_mode = "";
static const char *const uhs_speeds[] = {
[UHS_SDR12_BUS_SPEED] = "SDR12 ",
[UHS_SDR25_BUS_SPEED] = "SDR25 ",
[UHS_SDR50_BUS_SPEED] = "SDR50 ",
[UHS_SDR104_BUS_SPEED] = "SDR104 ",
[UHS_DDR50_BUS_SPEED] = "DDR50 ",
};
dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca);
switch (card->type) {
case MMC_TYPE_MMC:
type = "MMC";
break;
case MMC_TYPE_SD:
type = "SD";
if (mmc_card_blockaddr(card)) {
if (mmc_card_ext_capacity(card))
type = "SDXC";
else
type = "SDHC";
}
break;
case MMC_TYPE_SDIO:
type = "SDIO";
break;
case MMC_TYPE_SD_COMBO:
type = "SD-combo";
if (mmc_card_blockaddr(card))
type = "SDHC-combo";
break;
default:
type = "?";
break;
}
if (mmc_sd_card_uhs(card) &&
(card->sd_bus_speed < ARRAY_SIZE(uhs_speeds)))
uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed];
if (mmc_host_is_spi(card->host)) {
pr_info("%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_card_ddr_mode(card) ? "DDR " : "",
type);
} else {
pr_info("%s: new %s%s%s%s%s%s card at address %04x\n",
mmc_hostname(card->host),
mmc_card_uhs(card) ? "ultra high speed " :
(mmc_card_highspeed(card) ? "high speed " : ""),
(mmc_card_hs400(card) ? "HS400 " : ""),
(mmc_card_hs200(card) ? "HS200 " : ""),
mmc_card_ddr_mode(card) ? "DDR " : "",
uhs_bus_speed_mode, type, card->rca);
}
#ifdef CONFIG_MACH_LGE
/* LGE_CHANGE
* Adding Print for more information.
* 2014-09-01, [email protected]
*/
printk(KERN_INFO "[LGE][MMC][%-18s( )] mmc_hostname:%s, type:%s\n", __func__, mmc_hostname(card->host), type);
#endif
#ifdef CONFIG_DEBUG_FS
mmc_add_card_debugfs(card);
#endif
mmc_init_context_info(card->host);
ret = pm_runtime_set_active(&card->dev);
if (ret)
pr_err("%s: %s: failed setting runtime active: ret: %d\n",
mmc_hostname(card->host), __func__, ret);
else if (!mmc_card_sdio(card) && mmc_use_core_runtime_pm(card->host))
pm_runtime_enable(&card->dev);
if (mmc_card_sdio(card)) {
ret = device_init_wakeup(&card->dev, true);
if (ret)
pr_err("%s: %s: failed to init wakeup: %d\n",
mmc_hostname(card->host), __func__, ret);
}
ret = device_add(&card->dev);
#ifdef CONFIG_MACH_LGE
/* LGE_CHANGE
* Adding Print for more information.
* 2014-09-01, [email protected]
*/
if (ret) {
printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting fail!, ret:%d \n", __func__, ret);
return ret;
} else {
printk(KERN_INFO "[LGE][MMC][%-18s( )] device_add & uevent posting complete!\n", __func__);
}
#else
if (ret)
return ret;
#endif
device_enable_async_suspend(&card->dev);
#if defined(CONFIG_BCMDHD) || defined (CONFIG_BCMDHD_MODULE)
if (!strcmp(mmc_hostname(card->host), "mmc2")){
device_disable_async_suspend(&card->dev);
pr_err("%s: %s: device_disable_async_suspend\n", mmc_hostname(card->host),__func__);
}
#endif
if (mmc_use_core_runtime_pm(card->host) && !mmc_card_sdio(card)) {
card->rpm_attrib.show = show_rpm_delay;
card->rpm_attrib.store = store_rpm_delay;
sysfs_attr_init(&card->rpm_attrib.attr);
card->rpm_attrib.attr.name = "runtime_pm_timeout";
card->rpm_attrib.attr.mode = S_IRUGO | S_IWUSR;
ret = device_create_file(&card->dev, &card->rpm_attrib);
if (ret)
pr_err("%s: %s: creating runtime pm sysfs entry: failed: %d\n",
mmc_hostname(card->host), __func__, ret);
/* Default timeout is 10 seconds */
card->idle_timeout = RUNTIME_SUSPEND_DELAY_MS;
}
mmc_card_set_present(card);
return 0;
}