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sd-as3525v2: no limits on the amount of sectors to transfer

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24832 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rafaël Carré 2010-02-21 22:01:37 +00:00
parent f857fe1450
commit e9cd0f1c7a
1 changed files with 8 additions and 21 deletions
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29
firmware/target/arm/as3525/sd-as3525v2.c
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@ -651,25 +651,19 @@ static int sd_transfer_sectors(unsigned long start, int count, void* buf, bool w
dma_retain();
while(count)
const int cmd = write ? SD_WRITE_MULTIPLE_BLOCK : SD_READ_MULTIPLE_BLOCK;
/* Interrupt handler might set this to true during transfer */
retry = false;
do
{
/* Interrupt handler might set this to true during transfer */
retry = false;
/* 128 * 512 = 2^16, and doesn't fit in the 16 bits of DATA_LENGTH
* register, so we have to transfer maximum 127 sectors at a time. */
//unsigned int transfer = (count >= 128) ? 127 : count; /* sectors */
unsigned int transfer = count;
const int cmd =
write ? SD_WRITE_MULTIPLE_BLOCK : SD_READ_MULTIPLE_BLOCK;
MCI_CTRL |= FIFO_RESET;
while(MCI_CTRL & FIFO_RESET)
;
//MCI_BLKSIZ = 512;
MCI_BYTCNT = transfer * 512;
MCI_BYTCNT = count * 512;
MCI_CTRL |= FIFO_RESET;
while(MCI_CTRL & FIFO_RESET)
@ -708,13 +702,6 @@ static int sd_transfer_sectors(unsigned long start, int count, void* buf, bool w
printf("dma <-");
int delay = 0x1000000; while(delay--) ;
if(!retry)
{
buf += transfer * SECTOR_SIZE;
start += transfer;
count -= transfer;
}
last_disk_activity = current_tick;
if(!send_cmd(SD_STOP_TRANSMISSION, 0, MCI_NO_RESP, NULL))
@ -730,7 +717,7 @@ static int sd_transfer_sectors(unsigned long start, int count, void* buf, bool w
panicf(" wait for state TRAN failed (%d)", ret);
goto sd_transfer_error;
}
}
} while(retry);
dma_release();