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wait_for_rdy() now actually waits for RDY

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2057 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-08-29 11:50:57 +00:00
parent 53ee298d4a
commit 5d154f9723
1 changed files with 17 additions and 1 deletions
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18
firmware/drivers/ata.c
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@ -122,9 +122,25 @@ static int wait_for_bsy(void)
static int wait_for_rdy(void) __attribute__ ((section (".icode")));
static int wait_for_rdy(void)
{
int timeout;
if (!wait_for_bsy())
return 0;
return ATA_ALT_STATUS & STATUS_RDY;
timeout = current_tick + HZ*4;
while (TIME_BEFORE(current_tick, timeout) &&
!(ATA_ALT_STATUS & STATUS_RDY))
yield();
if (TIME_BEFORE(current_tick, timeout))
{
return STATUS_RDY;
}
else
{
return 0; /* timeout */
}
}
static int wait_for_start_of_transfer(void) __attribute__ ((section (".icode")));