1 files changed, 53 insertions, 16 deletions

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 8eefa7d5fe85..07c6da1f2f0f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -771,7 +771,19 @@ static void sdhci_adma_table_pre(struct sdhci_host *host,
 			len -= offset;
 		}
 
-		BUG_ON(len > 65536);
+		/*
+		 * The block layer forces a minimum segment size of PAGE_SIZE,
+		 * so 'len' can be too big here if PAGE_SIZE >= 64KiB. Write
+		 * multiple descriptors, noting that the ADMA table is sized
+		 * for 4KiB chunks anyway, so it will be big enough.
+		 */
+		while (len > host->max_adma) {
+			int n = 32 * 1024; /* 32KiB*/
+
+			__sdhci_adma_write_desc(host, &desc, addr, n, ADMA2_TRAN_VALID);
+			addr += n;
+			len -= n;
+		}
 
 		/* tran, valid */
 		if (len)
@@ -930,7 +942,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,
 	struct mmc_data *data;
 	unsigned target_timeout, current_timeout;
 
-	*too_big = true;
+	*too_big = false;
 
 	/*
 	 * If the host controller provides us with an incorrect timeout
@@ -941,7 +953,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,
 	if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)
 		return host->max_timeout_count;
 
-	/* Unspecified command, asume max */
+	/* Unspecified command, assume max */
 	if (cmd == NULL)
 		return host->max_timeout_count;
 
@@ -968,17 +980,14 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd,
 	while (current_timeout < target_timeout) {
 		count++;
 		current_timeout <<= 1;
-		if (count > host->max_timeout_count)
+		if (count > host->max_timeout_count) {
+			if (!(host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT))
+				DBG("Too large timeout 0x%x requested for CMD%d!\n",
+				    count, cmd->opcode);
+			count = host->max_timeout_count;
+			*too_big = true;
 			break;
-	}
-
-	if (count > host->max_timeout_count) {
-		if (!(host->quirks2 & SDHCI_QUIRK2_DISABLE_HW_TIMEOUT))
-			DBG("Too large timeout 0x%x requested for CMD%d!\n",
-			    count, cmd->opcode);
-		count = host->max_timeout_count;
-	} else {
-		*too_big = false;
+		}
 	}
 
 	return count;
@@ -2042,6 +2051,12 @@ void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode,
 			break;
 		case MMC_VDD_32_33:
 		case MMC_VDD_33_34:
+		/*
+		 * 3.4 ~ 3.6V are valid only for those platforms where it's
+		 * known that the voltage range is supported by hardware.
+		 */
+		case MMC_VDD_34_35:
+		case MMC_VDD_35_36:
 			pwr = SDHCI_POWER_330;
 			break;
 		default:
@@ -2422,6 +2437,25 @@ static int sdhci_get_cd(struct mmc_host *mmc)
 	return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
 }
 
+int sdhci_get_cd_nogpio(struct mmc_host *mmc)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&host->lock, flags);
+
+	if (host->flags & SDHCI_DEVICE_DEAD)
+		goto out;
+
+	ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
+out:
+	spin_unlock_irqrestore(&host->lock, flags);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(sdhci_get_cd_nogpio);
+
 static int sdhci_check_ro(struct sdhci_host *host)
 {
 	unsigned long flags;
@@ -3232,7 +3266,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
 			  -ETIMEDOUT :
 			  -EILSEQ;
 
-		if (mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
+		if (sdhci_auto_cmd23(host, mrq)) {
 			mrq->sbc->error = err;
 			__sdhci_finish_mrq(host, mrq);
 			return;
@@ -3946,6 +3980,7 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev,
 	 * descriptor for each segment, plus 1 for a nop end descriptor.
 	 */
 	host->adma_table_cnt = SDHCI_MAX_SEGS * 2 + 1;
+	host->max_adma = 65536;
 
 	host->max_timeout_count = 0xE;
 
@@ -4611,10 +4646,12 @@ int sdhci_setup_host(struct sdhci_host *host)
 	 * be larger than 64 KiB though.
 	 */
 	if (host->flags & SDHCI_USE_ADMA) {
-		if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC)
+		if (host->quirks & SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC) {
+			host->max_adma = 65532; /* 32-bit alignment */
 			mmc->max_seg_size = 65535;
-		else
+		} else {
 			mmc->max_seg_size = 65536;
+		}
 	} else {
 		mmc->max_seg_size = mmc->max_req_size;
 	}