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Better led control. Added status read delay. Fixed potential last_disk_activity race.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3501 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2003-03-31 14:14:07 +00:00
parent 0552efc981
commit fd9ce90a4c
1 changed files with 18 additions and 5 deletions
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21
firmware/drivers/ata.c
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@ -110,6 +110,7 @@ static int wait_for_bsy(void) __attribute__ ((section (".icode")));
static int wait_for_bsy(void)
{
int timeout = current_tick + HZ*10;
last_disk_activity = timeout;
while (TIME_BEFORE(current_tick, timeout) && (ATA_ALT_STATUS & STATUS_BSY))
sleep_thread();
wake_up_thread();
@ -129,6 +130,7 @@ static int wait_for_rdy(void)
return 0;
timeout = current_tick + HZ*10;
last_disk_activity = timeout;
while (TIME_BEFORE(current_tick, timeout) &&
!(ATA_ALT_STATUS & STATUS_RDY))
@ -180,12 +182,14 @@ int ata_read_sectors(unsigned long start,
if (poweroff) {
if (ata_power_on()) {
mutex_unlock(&ata_mtx);
led(false);
return -1;
}
}
else {
if (perform_soft_reset()) {
mutex_unlock(&ata_mtx);
led(false);
return -1;
}
}
@ -198,6 +202,7 @@ int ata_read_sectors(unsigned long start,
if (!wait_for_rdy())
{
mutex_unlock(&ata_mtx);
led(false);
return -2;
}
@ -218,6 +223,13 @@ int ata_read_sectors(unsigned long start,
ATA_SELECT = ((start >> 24) & 0xf) | SELECT_LBA | ata_device;
ATA_COMMAND = CMD_READ_MULTIPLE;
/* wait at least 400ns between writing command and reading status */
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
asm volatile ("nop");
while (count) {
int j;
int sectors;
@ -226,8 +238,6 @@ int ata_read_sectors(unsigned long start,
if (!wait_for_start_of_transfer()) {
ret = -4;
if(ata_hard_reset())
break;
goto retry;
}
@ -312,17 +322,21 @@ int ata_write_sectors(unsigned long start,
last_disk_activity = current_tick;
led(true);
if ( sleeping ) {
spinup = true;
if (poweroff) {
if (ata_power_on()) {
mutex_unlock(&ata_mtx);
led(false);
return -1;
}
}
else {
if (perform_soft_reset()) {
mutex_unlock(&ata_mtx);
led(false);
return -1;
}
}
@ -332,11 +346,10 @@ int ata_write_sectors(unsigned long start,
if (!wait_for_rdy())
{
mutex_unlock(&ata_mtx);
led(false);
return -2;
}
led(true);
if ( count == 256 )
ATA_NSECTOR = 0; /* 0 means 256 sectors */
else