diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/tegra2_mmc.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/mmc/tegra2_mmc.c b/drivers/mmc/tegra2_mmc.c index 5b4c9f6..3191557 100644 --- a/drivers/mmc/tegra2_mmc.c +++ b/drivers/mmc/tegra2_mmc.c @@ -114,6 +114,14 @@ static void mmc_set_transfer_mode(struct mmc_host *host, struct mmc_data *data) if (data->flags & MMC_DATA_READ) mode |= TEGRA_MMC_TRNMOD_DATA_XFER_DIR_SEL_READ; + if (data->flags & MMC_DATA_WRITE) { + if ((uintptr_t)data->src & (ARCH_DMA_MINALIGN - 1)) + printf("Warning: unaligned write to %p may fail\n", + data->src); + flush_dcache_range((ulong)data->src, (ulong)data->src + + data->blocks * data->blocksize); + } + writew(mode, &host->reg->trnmod); } @@ -310,6 +318,14 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, } } writel(mask, &host->reg->norintsts); + if (data->flags & MMC_DATA_READ) { + if ((uintptr_t)data->dest & (ARCH_DMA_MINALIGN - 1)) + printf("Warning: unaligned read from %p " + "may fail\n", data->dest); + invalidate_dcache_range((ulong)data->dest, + (ulong)data->dest + + data->blocks * data->blocksize); + } } udelay(1000); |