diff options
| author | Eric Nelson <eric.nelson@boundarydevices.com> | 2012-04-25 14:28:48 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-07-13 16:20:57 -0500 |
| commit | e576bd90f940806b989ffd666552081f17f032c8 (patch) | |
| tree | 5fedd62efa456211d31f97459ecd4852c7cbc265 | |
| parent | 0b15d51ed07db4c318d9c6b02b394ba5a3bc4296 (diff) | |
i.MX: fsl_esdhc: allow use with cache enabled.
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
| -rw-r--r-- | drivers/mmc/fsl_esdhc.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 07370b572..105ffb18e 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -190,6 +190,10 @@ static int esdhc_setup_data(struct mmc *mmc, struct mmc_data *data) esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value); esdhc_write32(®s->dsaddr, (u32)data->dest); } else { + flush_dcache_range((ulong)data->src, + (ulong)data->src+data->blocks + *data->blocksize); + if (wml_value > WML_WR_WML_MAX) wml_value = WML_WR_WML_MAX_VAL; if ((esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL) == 0) { @@ -249,7 +253,15 @@ static int esdhc_setup_data(struct mmc *mmc, struct mmc_data *data) return 0; } - +static void check_and_invalidate_dcache_range + (struct mmc_cmd *cmd, + struct mmc_data *data) { + unsigned start = (unsigned)data->dest ; + unsigned size = roundup(ARCH_DMA_MINALIGN, + data->blocks*data->blocksize); + unsigned end = start+size ; + invalidate_dcache_range(start, end); +} /* * Sends a command out on the bus. Takes the mmc pointer, * a command pointer, and an optional data pointer. @@ -315,6 +327,9 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) while (!(esdhc_read32(®s->irqstat) & (IRQSTAT_CC | IRQSTAT_CTOE))) ; + if (data && (data->flags & MMC_DATA_READ)) + check_and_invalidate_dcache_range(cmd, data); + irqstat = esdhc_read32(®s->irqstat); esdhc_write32(®s->irqstat, irqstat); |