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sdmmc: Ensure aligned DMA buffers

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This commit is contained in:
CTCaer 2019-12-04 19:42:25 +02:00
parent c24d943122
commit 168de9ddd8
2 changed files with 10 additions and 6 deletions
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8
bootloader/libs/fatfs/diskio.c
View File

@ -46,7 +46,8 @@ DRESULT disk_read (
UINT count /* Number of sectors to read */
)
{
if ((u32)buff >= DRAM_START)
// Ensure that buffer resides in DRAM and it's DMA aligned.
if (((u32)buff >= DRAM_START) && !((u32)buff % 8))
return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER;
if (sdmmc_storage_read(&sd_storage, sector, count, buf))
@ -67,9 +68,10 @@ DRESULT disk_write (
UINT count /* Number of sectors to write */
)
{
if ((u32)buff >= DRAM_START)
// Ensure that buffer resides in DRAM and it's DMA aligned.
if (((u32)buff >= DRAM_START) && !((u32)buff % 8))
return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER; //TODO: define this somewhere.
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER;
memcpy(buf, buff, 512 * count);
if (sdmmc_storage_write(&sd_storage, sector, count, buf))
return RES_OK;

8
nyx/nyx_gui/libs/fatfs/diskio.c
View File

@ -46,7 +46,8 @@ DRESULT disk_read (
UINT count /* Number of sectors to read */
)
{
if ((u32)buff >= DRAM_START)
// Ensure that buffer resides in DRAM and it's DMA aligned.
if (((u32)buff >= DRAM_START) && !((u32)buff % 8))
return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER;
if (sdmmc_storage_read(&sd_storage, sector, count, buf))
@ -67,9 +68,10 @@ DRESULT disk_write (
UINT count /* Number of sectors to write */
)
{
if ((u32)buff >= DRAM_START)
// Ensure that buffer resides in DRAM and it's DMA aligned.
if (((u32)buff >= DRAM_START) && !((u32)buff % 8))
return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER; //TODO: define this somewhere.
u8 *buf = (u8 *)SDMMC_UPPER_BUFFER;
memcpy(buf, buff, 512 * count);
if (sdmmc_storage_write(&sd_storage, sector, count, buf))
return RES_OK;