Using the global variable does not look nice.
Add a new field sthci::align_buffer to point to the bounce buffer.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
drivers/mmc/sdhci.c | 27 +++++++++++++-------------- include/sdhci.h | 1 + 2 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 01fa5a9d4d5b..18fbcb5f1864 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -16,12 +16,6 @@ #include <sdhci.h> #include <dm.h>
-#if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER) -void *aligned_buffer = (void *)CONFIG_FIXED_SDHCI_ALIGNED_BUFFER; -#else -void *aligned_buffer; -#endif - static void sdhci_reset(struct sdhci_host *host, u8 mask) { unsigned long timeout; @@ -149,9 +143,10 @@ static void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data, if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && (host->start_addr & 0x7) != 0x0) { *is_aligned = 0; - host->start_addr = (unsigned long)aligned_buffer; + host->start_addr = (unsigned long)host->align_buffer; if (data->flags != MMC_DATA_READ) - memcpy(aligned_buffer, data->src, trans_bytes); + memcpy(host->align_buffer, data->src, + trans_bytes); }
#if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER) @@ -160,9 +155,9 @@ static void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data, * CONFIG_FIXED_SDHCI_ALIGNED_BUFFER is defined */ *is_aligned = 0; - host->start_addr = (unsigned long)aligned_buffer; + host->start_addr = (unsigned long)host->align_buffer; if (data->flags != MMC_DATA_READ) - memcpy(aligned_buffer, data->src, trans_bytes); + memcpy(host->align_buffer, data->src, trans_bytes); #endif sdhci_writel(host, host->start_addr, SDHCI_DMA_ADDRESS);
@@ -381,7 +376,7 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, if (!ret) { if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !is_aligned && (data->flags == MMC_DATA_READ)) - memcpy(data->dest, aligned_buffer, trans_bytes); + memcpy(data->dest, host->align_buffer, trans_bytes); return 0; }
@@ -630,14 +625,18 @@ static int sdhci_init(struct mmc *mmc)
sdhci_reset(host, SDHCI_RESET_ALL);
- if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !aligned_buffer) { - aligned_buffer = memalign(8, 512*1024); - if (!aligned_buffer) { +#if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER) + host->align_buffer = (void *)CONFIG_FIXED_SDHCI_ALIGNED_BUFFER; +#else + if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) { + host->align_buffer = memalign(8, 512 * 1024); + if (!host->align_buffer) { printf("%s: Aligned buffer alloc failed!!!\n", __func__); return -ENOMEM; } } +#endif
sdhci_set_power(host, fls(mmc->cfg->voltages) - 1);
diff --git a/include/sdhci.h b/include/sdhci.h index 01addb7a6036..1358218270b8 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -321,6 +321,7 @@ struct sdhci_host { uint voltages;
struct mmc_config cfg; + void *align_buffer; dma_addr_t start_addr; int flags; #define USE_SDMA (0x1 << 0)