[ Upstream commit af849c86109d79222e549826068bbf4e7f9a2472 ]
If the host controller supports auto-commands then enable the auto-command error interrupt and handle it. In the case of auto-CMD23, the error is treated the same as manual CMD23 error. In the case of auto-CMD12, commands-during-transfer are not permitted, so the error handling is treated the same as a data error.
Signed-off-by: Adrian Hunter adrian.hunter@intel.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mmc/host/sdhci.c | 35 +++++++++++++++++++++++++++++++++++ drivers/mmc/host/sdhci.h | 7 ++++++- 2 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 0eb05a42a857..c749d3dc1d36 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -841,6 +841,11 @@ static void sdhci_set_transfer_irqs(struct sdhci_host *host) else host->ier = (host->ier & ~dma_irqs) | pio_irqs;
+ if (host->flags & (SDHCI_AUTO_CMD23 | SDHCI_AUTO_CMD12)) + host->ier |= SDHCI_INT_AUTO_CMD_ERR; + else + host->ier &= ~SDHCI_INT_AUTO_CMD_ERR; + sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); } @@ -2642,6 +2647,21 @@ static void sdhci_timeout_data_timer(struct timer_list *t)
static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p) { + /* Handle auto-CMD12 error */ + if (intmask & SDHCI_INT_AUTO_CMD_ERR && host->data_cmd) { + struct mmc_request *mrq = host->data_cmd->mrq; + u16 auto_cmd_status = sdhci_readw(host, SDHCI_AUTO_CMD_STATUS); + int data_err_bit = (auto_cmd_status & SDHCI_AUTO_CMD_TIMEOUT) ? + SDHCI_INT_DATA_TIMEOUT : + SDHCI_INT_DATA_CRC; + + /* Treat auto-CMD12 error the same as data error */ + if (!mrq->sbc && (host->flags & SDHCI_AUTO_CMD12)) { + *intmask_p |= data_err_bit; + return; + } + } + if (!host->cmd) { /* * SDHCI recovers from errors by resetting the cmd and data @@ -2676,6 +2696,21 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p) return; }
+ /* Handle auto-CMD23 error */ + if (intmask & SDHCI_INT_AUTO_CMD_ERR) { + struct mmc_request *mrq = host->cmd->mrq; + u16 auto_cmd_status = sdhci_readw(host, SDHCI_AUTO_CMD_STATUS); + int err = (auto_cmd_status & SDHCI_AUTO_CMD_TIMEOUT) ? + -ETIMEDOUT : + -EILSEQ; + + if (mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) { + mrq->sbc->error = err; + sdhci_finish_mrq(host, mrq); + return; + } + } + if (intmask & SDHCI_INT_RESPONSE) sdhci_finish_command(host); } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 33a7728c71fa..0f8c4f3ccafc 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -151,7 +151,8 @@ #define SDHCI_INT_ERROR_MASK 0xFFFF8000
#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \ - SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX) + SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX | \ + SDHCI_INT_AUTO_CMD_ERR) #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \ SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \ SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ @@ -167,6 +168,10 @@ #define SDHCI_CQE_INT_MASK (SDHCI_CQE_INT_ERR_MASK | SDHCI_INT_CQE)
#define SDHCI_AUTO_CMD_STATUS 0x3C +#define SDHCI_AUTO_CMD_TIMEOUT 0x00000002 +#define SDHCI_AUTO_CMD_CRC 0x00000004 +#define SDHCI_AUTO_CMD_END_BIT 0x00000008 +#define SDHCI_AUTO_CMD_INDEX 0x00000010
#define SDHCI_HOST_CONTROL2 0x3E #define SDHCI_CTRL_UHS_MASK 0x0007