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path: root/drivers/mmc/sdhci.c
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Diffstat (limited to 'drivers/mmc/sdhci.c')
-rw-r--r--drivers/mmc/sdhci.c95
1 files changed, 55 insertions, 40 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index cd98117632d..4bf1fea5e2c 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -37,6 +37,7 @@ static unsigned int debug_quirks = 0;
#define SDHCI_QUIRK_FORCE_DMA (1<<1)
/* Controller doesn't like some resets when there is no card inserted. */
#define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2)
+#define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3)
static const struct pci_device_id pci_ids[] __devinitdata = {
{
@@ -65,6 +66,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
.driver_data = SDHCI_QUIRK_FORCE_DMA,
},
+ {
+ .vendor = PCI_VENDOR_ID_ENE,
+ .device = PCI_DEVICE_ID_ENE_CB712_SD,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE,
+ },
+
{ /* Generic SD host controller */
PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
},
@@ -197,15 +206,9 @@ static void sdhci_deactivate_led(struct sdhci_host *host)
* *
\*****************************************************************************/
-static inline char* sdhci_kmap_sg(struct sdhci_host* host)
+static inline char* sdhci_sg_to_buffer(struct sdhci_host* host)
{
- host->mapped_sg = kmap_atomic(host->cur_sg->page, KM_BIO_SRC_IRQ);
- return host->mapped_sg + host->cur_sg->offset;
-}
-
-static inline void sdhci_kunmap_sg(struct sdhci_host* host)
-{
- kunmap_atomic(host->mapped_sg, KM_BIO_SRC_IRQ);
+ return page_address(host->cur_sg->page) + host->cur_sg->offset;
}
static inline int sdhci_next_sg(struct sdhci_host* host)
@@ -240,7 +243,7 @@ static void sdhci_read_block_pio(struct sdhci_host *host)
chunk_remain = 0;
data = 0;
- buffer = sdhci_kmap_sg(host) + host->offset;
+ buffer = sdhci_sg_to_buffer(host) + host->offset;
while (blksize) {
if (chunk_remain == 0) {
@@ -264,16 +267,13 @@ static void sdhci_read_block_pio(struct sdhci_host *host)
}
if (host->remain == 0) {
- sdhci_kunmap_sg(host);
if (sdhci_next_sg(host) == 0) {
BUG_ON(blksize != 0);
return;
}
- buffer = sdhci_kmap_sg(host);
+ buffer = sdhci_sg_to_buffer(host);
}
}
-
- sdhci_kunmap_sg(host);
}
static void sdhci_write_block_pio(struct sdhci_host *host)
@@ -290,7 +290,7 @@ static void sdhci_write_block_pio(struct sdhci_host *host)
data = 0;
bytes = 0;
- buffer = sdhci_kmap_sg(host) + host->offset;
+ buffer = sdhci_sg_to_buffer(host) + host->offset;
while (blksize) {
size = min(host->size, host->remain);
@@ -314,16 +314,13 @@ static void sdhci_write_block_pio(struct sdhci_host *host)
}
if (host->remain == 0) {
- sdhci_kunmap_sg(host);
if (sdhci_next_sg(host) == 0) {
BUG_ON(blksize != 0);
return;
}
- buffer = sdhci_kmap_sg(host);
+ buffer = sdhci_sg_to_buffer(host);
}
}
-
- sdhci_kunmap_sg(host);
}
static void sdhci_transfer_pio(struct sdhci_host *host)
@@ -372,7 +369,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
/* Sanity checks */
BUG_ON(data->blksz * data->blocks > 524288);
- BUG_ON(data->blksz > host->max_block);
+ BUG_ON(data->blksz > host->mmc->max_blk_size);
BUG_ON(data->blocks > 65535);
/* timeout in us */
@@ -674,10 +671,17 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
if (host->power == power)
return;
- writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
-
- if (power == (unsigned short)-1)
+ if (power == (unsigned short)-1) {
+ writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
goto out;
+ }
+
+ /*
+ * Spec says that we should clear the power reg before setting
+ * a new value. Some controllers don't seem to like this though.
+ */
+ if (!(host->chip->quirks & SDHCI_QUIRK_SINGLE_POWER_WRITE))
+ writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
pwr = SDHCI_POWER_ON;
@@ -1109,7 +1113,9 @@ static int sdhci_resume (struct pci_dev *pdev)
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
- pci_enable_device(pdev);
+ ret = pci_enable_device(pdev);
+ if (ret)
+ return ret;
for (i = 0;i < chip->num_slots;i++) {
if (!chip->hosts[i])
@@ -1170,8 +1176,8 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
}
if (pci_resource_len(pdev, first_bar + slot) != 0x100) {
- printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. Aborting.\n");
- return -ENODEV;
+ printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. "
+ "You may experience problems.\n");
}
if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
@@ -1274,15 +1280,6 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
if (caps & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
- host->max_block = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT;
- if (host->max_block >= 3) {
- printk(KERN_ERR "%s: Invalid maximum block size.\n",
- host->slot_descr);
- ret = -ENODEV;
- goto unmap;
- }
- host->max_block = 512 << host->max_block;
-
/*
* Set host parameters.
*/
@@ -1294,9 +1291,9 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
mmc->ocr_avail = 0;
if (caps & SDHCI_CAN_VDD_330)
mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34;
- else if (caps & SDHCI_CAN_VDD_300)
+ if (caps & SDHCI_CAN_VDD_300)
mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31;
- else if (caps & SDHCI_CAN_VDD_180)
+ if (caps & SDHCI_CAN_VDD_180)
mmc->ocr_avail |= MMC_VDD_17_18|MMC_VDD_18_19;
if ((host->max_clk > 25000000) && !(caps & SDHCI_CAN_DO_HISPD)) {
@@ -1326,15 +1323,33 @@ static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
/*
* Maximum number of sectors in one transfer. Limited by DMA boundary
- * size (512KiB), which means (512 KiB/512=) 1024 entries.
+ * size (512KiB).
*/
- mmc->max_sectors = 1024;
+ mmc->max_req_size = 524288;
/*
* Maximum segment size. Could be one segment with the maximum number
- * of sectors.
+ * of bytes.
+ */
+ mmc->max_seg_size = mmc->max_req_size;
+
+ /*
+ * Maximum block size. This varies from controller to controller and
+ * is specified in the capabilities register.
+ */
+ mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT;
+ if (mmc->max_blk_size >= 3) {
+ printk(KERN_ERR "%s: Invalid maximum block size.\n",
+ host->slot_descr);
+ ret = -ENODEV;
+ goto unmap;
+ }
+ mmc->max_blk_size = 512 << mmc->max_blk_size;
+
+ /*
+ * Maximum block count.
*/
- mmc->max_seg_size = mmc->max_sectors * 512;
+ mmc->max_blk_count = 65535;
/*
* Init tasklets.
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 12:52:15 +0000