/*
* atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms
* during an atapi drive reset operation. If the drive has not yet responded,
* and we have not yet hit our maximum waiting time, then the timer is restarted
* for another 50ms.
*/
static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive)
{
ide_hwgroup_t *hwgroup = HWGROUP(drive);
ide_hwif_t *hwif = HWIF(drive);
u8 stat;
SELECT_DRIVE(drive);
udelay (10);
if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG), 0, BUSY_STAT)) {
printk("%s: ATAPI reset complete\n", drive->name);
} else {
if (time_before(jiffies, hwgroup->poll_timeout)) {
if (HWGROUP(drive)->handler != NULL)
BUG();
ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
/* continue polling */
return ide_started;
}
/* end of polling */
hwgroup->poll_timeout = 0;
printk("%s: ATAPI reset timed-out, status=0x%02x\n",
drive->name, stat);
/* do it the old fashioned way */
return do_reset1(drive, 1);
}
/* done polling */
hwgroup->poll_timeout = 0;
return ide_stopped;
}
/* Note: We don't use the generic routine here because some of Apple's
* controller seem to be very sensitive about how things are done.
* We should probably set the NIEN bit, but that's an example of thing
* that can cause the controller to hang under some circumstances when
* done on the media-bay CD-ROM during boot. We do get occasional
* spurrious interrupts because of that.
* --BenH
*/
static int
pmac_ide_do_setfeature(ide_drive_t *drive, byte command)
{
unsigned long flags;
int result = 1;
save_flags(flags);
cli();
udelay(1);
SELECT_DRIVE(HWIF(drive), drive);
SELECT_MASK(HWIF(drive), drive, 0);
udelay(1);
if(wait_for_ready(drive)) {
printk(KERN_ERR "pmac_ide_do_setfeature disk not ready before SET_FEATURE!\n");
goto out;
}
OUT_BYTE(SETFEATURES_XFER, IDE_FEATURE_REG);
OUT_BYTE(command, IDE_NSECTOR_REG);
OUT_BYTE(WIN_SETFEATURES, IDE_COMMAND_REG);
udelay(1);
result = wait_for_ready(drive);
if (result)
printk(KERN_ERR "pmac_ide_do_setfeature disk not ready after SET_FEATURE !\n");
out:
restore_flags(flags);
return result;
}
static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
if (blk_pm_suspend_request(rq) &&
pm->pm_step == IDE_PM_START_SUSPEND)
/* Mark drive blocked when starting the suspend sequence. */
drive->dev_flags |= IDE_DFLAG_BLOCKED;
else if (blk_pm_resume_request(rq) &&
pm->pm_step == IDE_PM_START_RESUME) {
/*
* The first thing we do on wakeup is to wait for BSY bit to
* go away (with a looong timeout) as a drive on this hwif may
* just be POSTing itself.
* We do that before even selecting as the "other" device on
* the bus may be broken enough to walk on our toes at this
* point.
*/
ide_hwif_t *hwif = drive->hwif;
int rc;
#ifdef DEBUG_PM
printk("%s: Wakeup request inited, waiting for !BSY...\n", drive->name);
#endif
rc = ide_wait_not_busy(hwif, 35000);
if (rc)
printk(KERN_WARNING "%s: bus not ready on wakeup\n", drive->name);
SELECT_DRIVE(drive);
hwif->tp_ops->set_irq(hwif, 1);
rc = ide_wait_not_busy(hwif, 100000);
if (rc)
printk(KERN_WARNING "%s: drive not ready on wakeup\n", drive->name);
}
}
/*
* Similar to ide_wait_stat(), except it never calls ide_error internally.
* This is a kludge to handle the new ide_config_drive_speed() function,
* and should not otherwise be used anywhere. Eventually, the tuneproc's
* should be updated to return ide_startstop_t, in which case we can get
* rid of this abomination again. :) -ml
*
* It is gone..........
*
* const char *msg == consider adding for verbose errors.
*/
int ide_config_drive_speed (ide_drive_t *drive, u8 speed)
{
ide_hwif_t *hwif = HWIF(drive);
int i, error = 1;
u8 stat;
// while (HWGROUP(drive)->busy)
// ide_delay_50ms();
#if defined(CONFIG_BLK_DEV_IDEDMA) && !defined(CONFIG_DMA_NONPCI)
hwif->ide_dma_host_off(drive);
#endif /* (CONFIG_BLK_DEV_IDEDMA) && !(CONFIG_DMA_NONPCI) */
/*
* Don't use ide_wait_cmd here - it will
* attempt to set_geometry and recalibrate,
* but for some reason these don't work at
* this point (lost interrupt).
*/
/*
* Select the drive, and issue the SETFEATURES command
*/
disable_irq_nosync(hwif->irq);
udelay(1);
SELECT_DRIVE(drive);
SELECT_MASK(drive, 0);
udelay(1);
if (IDE_CONTROL_REG)
hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
hwif->OUTB(speed, IDE_NSECTOR_REG);
hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
hwif->OUTB(WIN_SETFEATURES, IDE_COMMAND_REG);
if ((IDE_CONTROL_REG) && (drive->quirk_list == 2))
hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
udelay(1);
/*
* Wait for drive to become non-BUSY
*/
if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
unsigned long flags, timeout;
local_irq_set(flags);
timeout = jiffies + WAIT_CMD;
while ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
if (time_after(jiffies, timeout))
break;
}
local_irq_restore(flags);
}
/*
* Allow status to settle, then read it again.
* A few rare drives vastly violate the 400ns spec here,
* so we'll wait up to 10usec for a "good" status
* rather than expensively fail things immediately.
* This fix courtesy of Matthew Faupel & Niccolo Rigacci.
*/
for (i = 0; i < 10; i++) {
udelay(1);
if (OK_STAT((stat = hwif->INB(IDE_STATUS_REG)), DRIVE_READY, BUSY_STAT|DRQ_STAT|ERR_STAT)) {
error = 0;
break;
}
}
SELECT_MASK(drive, 0);
enable_irq(hwif->irq);
if (error) {
(void) ide_dump_status(drive, "set_drive_speed_status", stat);
return error;
}
drive->id->dma_ultra &= ~0xFF00;
drive->id->dma_mword &= ~0x0F00;
drive->id->dma_1word &= ~0x0F00;
#if defined(CONFIG_BLK_DEV_IDEDMA) && !defined(CONFIG_DMA_NONPCI)
if (speed >= XFER_SW_DMA_0)
hwif->ide_dma_host_on(drive);
else
hwif->ide_dma_off_quietly(drive);
#endif /* (CONFIG_BLK_DEV_IDEDMA) && !(CONFIG_DMA_NONPCI) */
switch(speed) {
case XFER_UDMA_7: drive->id->dma_ultra |= 0x8080; break;
case XFER_UDMA_6: drive->id->dma_ultra |= 0x4040; break;
case XFER_UDMA_5: drive->id->dma_ultra |= 0x2020; break;
case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break;
case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break;
case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break;
case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break;
case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break;
case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break;
case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break;
case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break;
case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break;
case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break;
case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break;
default: break;
}
if (!drive->init_speed)
drive->init_speed = speed;
drive->current_speed = speed;
return error;
}
static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
{
unsigned int unit;
unsigned long flags;
ide_hwif_t *hwif;
ide_hwgroup_t *hwgroup;
spin_lock_irqsave(&io_request_lock, flags);
hwgroup = HWGROUP(drive);
hwif = HWIF(drive);
/* We must not reset with running handlers */
if(hwgroup->handler != NULL)
BUG();
/* For an ATAPI device, first try an ATAPI SRST. */
if (drive->media != ide_disk && !do_not_try_atapi) {
pre_reset(drive);
SELECT_DRIVE(drive);
udelay (20);
hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
spin_unlock_irqrestore(&io_request_lock, flags);
return ide_started;
}
/*
* First, reset any device state data we were maintaining
* for any of the drives on this interface.
*/
for (unit = 0; unit < MAX_DRIVES; ++unit)
pre_reset(&hwif->drives[unit]);
#if OK_TO_RESET_CONTROLLER
if (!IDE_CONTROL_REG) {
spin_unlock_irqrestore(&io_request_lock, flags);
return ide_stopped;
}
/*
* Note that we also set nIEN while resetting the device,
* to mask unwanted interrupts from the interface during the reset.
* However, due to the design of PC hardware, this will cause an
* immediate interrupt due to the edge transition it produces.
* This single interrupt gives us a "fast poll" for drives that
* recover from reset very quickly, saving us the first 50ms wait time.
*/
/* set SRST and nIEN */
hwif->OUTBSYNC(drive, drive->ctl|6,IDE_CONTROL_REG);
/* more than enough time */
udelay(10);
if (drive->quirk_list == 2) {
/* clear SRST and nIEN */
hwif->OUTBSYNC(drive, drive->ctl, IDE_CONTROL_REG);
} else {
/* clear SRST, leave nIEN */
hwif->OUTBSYNC(drive, drive->ctl|2, IDE_CONTROL_REG);
}
/* more than enough time */
udelay(10);
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
__ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
/*
* Some weird controller like resetting themselves to a strange
* state when the disks are reset this way. At least, the Winbond
* 553 documentation says that
*/
if (hwif->resetproc != NULL) {
hwif->resetproc(drive);
}
#endif /* OK_TO_RESET_CONTROLLER */
spin_unlock_irqrestore(&io_request_lock, flags);
return ide_started;
}
static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
{
ide_startstop_t startstop;
BUG_ON(!blk_rq_started(rq));
#ifdef DEBUG
printk("%s: start_request: current=0x%08lx\n",
drive->hwif->name, (unsigned long) rq);
#endif
/* bail early if we've exceeded max_failures */
if (drive->max_failures && (drive->failures > drive->max_failures)) {
rq->cmd_flags |= REQ_FAILED;
goto kill_rq;
}
if (blk_pm_request(rq))
ide_check_pm_state(drive, rq);
SELECT_DRIVE(drive);
if (ide_wait_stat(&startstop, drive, drive->ready_stat,
ATA_BUSY | ATA_DRQ, WAIT_READY)) {
printk(KERN_ERR "%s: drive not ready for command\n", drive->name);
return startstop;
}
if (!drive->special.all) {
struct ide_driver *drv;
/*
* We reset the drive so we need to issue a SETFEATURES.
* Do it _after_ do_special() restored device parameters.
*/
if (drive->current_speed == 0xff)
ide_config_drive_speed(drive, drive->desired_speed);
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
return execute_drive_cmd(drive, rq);
else if (blk_pm_request(rq)) {
struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk("%s: start_power_step(step: %d)\n",
drive->name, pm->pm_step);
#endif
startstop = ide_start_power_step(drive, rq);
if (startstop == ide_stopped &&
pm->pm_step == IDE_PM_COMPLETED)
ide_complete_pm_request(drive, rq);
return startstop;
} else if (!rq->rq_disk && blk_special_request(rq))
/*
* TODO: Once all ULDs have been modified to
* check for specific op codes rather than
* blindly accepting any special request, the
* check for ->rq_disk above may be replaced
* by a more suitable mechanism or even
* dropped entirely.
*/
return ide_special_rq(drive, rq);
drv = *(struct ide_driver **)rq->rq_disk->private_data;
return drv->do_request(drive, rq, rq->sector);
}
return do_special(drive);
kill_rq:
ide_kill_rq(drive, rq);
return ide_stopped;
}
/*
* Set a new transfer mode at the drive
*/
int cs5530_set_xfer_mode (ide_drive_t *drive, byte mode)
{
int i, error = 1;
byte stat;
ide_hwif_t *hwif = HWIF(drive);
printk("%s: cs5530_set_xfer_mode(%s)\n", drive->name, strmode(mode));
/*
* If this is a DMA mode setting, then turn off all DMA bits.
* We will set one of them back on afterwards, if all goes well.
*
* Not sure why this is needed (it looks very silly),
* but other IDE chipset drivers also do this fiddling. ???? -ml
*/
switch (mode) {
case XFER_UDMA_4:
case XFER_UDMA_3:
case XFER_UDMA_2:
case XFER_UDMA_1:
case XFER_UDMA_0:
case XFER_MW_DMA_2:
case XFER_MW_DMA_1:
case XFER_MW_DMA_0:
case XFER_SW_DMA_2:
case XFER_SW_DMA_1:
case XFER_SW_DMA_0:
drive->id->dma_ultra &= ~0xFF00;
drive->id->dma_mword &= ~0x0F00;
drive->id->dma_1word &= ~0x0F00;
}
/*
* Select the drive, and issue the SETFEATURES command
*/
disable_irq(hwif->irq);
udelay(1);
SELECT_DRIVE(HWIF(drive), drive);
udelay(1);
if (IDE_CONTROL_REG)
OUT_BYTE(drive->ctl | 2, IDE_CONTROL_REG);
OUT_BYTE(mode, IDE_NSECTOR_REG);
OUT_BYTE(SETFEATURES_XFER, IDE_FEATURE_REG);
OUT_BYTE(WIN_SETFEATURES, IDE_COMMAND_REG);
udelay(1); /* spec allows drive 400ns to assert "BUSY" */
/*
* Wait for drive to become non-BUSY
*/
if ((stat = GET_STAT()) & BUSY_STAT) {
unsigned long flags, timeout;
__save_flags(flags); /* local CPU only */
ide__sti(); /* local CPU only -- for jiffies */
timeout = jiffies + WAIT_CMD;
while ((stat = GET_STAT()) & BUSY_STAT) {
if (0 < (signed long)(jiffies - timeout))
break;
}
__restore_flags(flags); /* local CPU only */
}
/*
* Allow status to settle, then read it again.
* A few rare drives vastly violate the 400ns spec here,
* so we'll wait up to 10usec for a "good" status
* rather than expensively fail things immediately.
*/
for (i = 0; i < 10; i++) {
udelay(1);
if (OK_STAT((stat = GET_STAT()), DRIVE_READY, BUSY_STAT|DRQ_STAT|ERR_STAT)) {
error = 0;
break;
}
}
enable_irq(hwif->irq);
/*
* Turn dma bit on if all is okay
*/
if (error) {
(void) ide_dump_status(drive, "cs5530_set_xfer_mode", stat);
} else {
switch (mode) {
case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break;
case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break;
case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break;
case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break;
case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break;
case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break;
case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break;
case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break;
case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break;
case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break;
case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break;
}
}
return error;
}
/*
* Similar to ide_wait_stat(), except it never calls ide_error internally.
* This is a kludge to handle the new ide_config_drive_speed() function,
* and should not otherwise be used anywhere. Eventually, the tuneproc's
* should be updated to return ide_startstop_t, in which case we can get
* rid of this abomination again. :) -ml
*
* It is gone..........
*
* const char *msg == consider adding for verbose errors.
*/
int ide_config_drive_speed (ide_drive_t *drive, u8 speed)
{
ide_hwif_t *hwif = HWIF(drive);
int i, error = 1;
u8 stat;
// while (HWGROUP(drive)->busy)
// msleep(50);
#ifdef CONFIG_BLK_DEV_IDEDMA
if (hwif->ide_dma_check) /* check if host supports DMA */
hwif->ide_dma_host_off(drive);
#endif
/*
* Don't use ide_wait_cmd here - it will
* attempt to set_geometry and recalibrate,
* but for some reason these don't work at
* this point (lost interrupt).
*/
/*
* Select the drive, and issue the SETFEATURES command
*/
disable_irq_nosync(hwif->irq);
/*
* FIXME: we race against the running IRQ here if
* this is called from non IRQ context. If we use
* disable_irq() we hang on the error path. Work
* is needed.
*/
udelay(1);
SELECT_DRIVE(drive);
SELECT_MASK(drive, 0);
udelay(1);
if (IDE_CONTROL_REG)
hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
hwif->OUTB(speed, IDE_NSECTOR_REG);
hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
hwif->OUTB(WIN_SETFEATURES, IDE_COMMAND_REG);
if ((IDE_CONTROL_REG) && (drive->quirk_list == 2))
hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
udelay(1);
/*
* Wait for drive to become non-BUSY
*/
if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
unsigned long flags, timeout;
local_irq_set(flags);
timeout = jiffies + WAIT_CMD;
while ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
if (time_after(jiffies, timeout))
break;
}
local_irq_restore(flags);
}
/*
* Allow status to settle, then read it again.
* A few rare drives vastly violate the 400ns spec here,
* so we'll wait up to 10usec for a "good" status
* rather than expensively fail things immediately.
* This fix courtesy of Matthew Faupel & Niccolo Rigacci.
*/
for (i = 0; i < 10; i++) {
udelay(1);
if (OK_STAT((stat = hwif->INB(IDE_STATUS_REG)), DRIVE_READY, BUSY_STAT|DRQ_STAT|ERR_STAT)) {
error = 0;
break;
}
}
// Added by Frank Ting 95/8/24
// due to BTC loader resume bug
if (i==10 && (OK_STAT(stat, 0, BUSY_STAT|DRQ_STAT|ERR_STAT))){
error=0;
printk("%s: conditional pass\n", drive->name);
}
SELECT_MASK(drive, 0);
enable_irq(hwif->irq);
if (error) {
(void) ide_dump_status(drive, "set_drive_speed_status", stat);
return error;
}
drive->id->dma_ultra &= ~0xFF00;
drive->id->dma_mword &= ~0x0F00;
drive->id->dma_1word &= ~0x0F00;
#ifdef CONFIG_BLK_DEV_IDEDMA
if (speed >= XFER_SW_DMA_0)
hwif->ide_dma_host_on(drive);
else if (hwif->ide_dma_check) /* check if host supports DMA */
hwif->ide_dma_off_quietly(drive);
#endif
switch(speed) {
case XFER_UDMA_7: drive->id->dma_ultra |= 0x8080; break;
case XFER_UDMA_6: drive->id->dma_ultra |= 0x4040; break;
case XFER_UDMA_5: drive->id->dma_ultra |= 0x2020; break;
case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break;
case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break;
case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break;
case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break;
case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break;
case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break;
case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break;
case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break;
case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break;
case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break;
case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break;
default: break;
}
if (!drive->init_speed)
drive->init_speed = speed;
drive->current_speed = speed;
return error;
}
/*
* do_reset1() attempts to recover a confused drive by resetting it.
* Unfortunately, resetting a disk drive actually resets all devices on
* the same interface, so it can really be thought of as resetting the
* interface rather than resetting the drive.
*
* ATAPI devices have their own reset mechanism which allows them to be
* individually reset without clobbering other devices on the same interface.
*
* Unfortunately, the IDE interface does not generate an interrupt to let
* us know when the reset operation has finished, so we must poll for this.
* Equally poor, though, is the fact that this may a very long time to complete,
* (up to 30 seconds worstcase). So, instead of busy-waiting here for it,
* we set a timer to poll at 50ms intervals.
*/
static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
{
unsigned int unit;
unsigned long flags;
ide_hwif_t *hwif = HWIF(drive);
ide_hwgroup_t *hwgroup;
//Added by Frank 96/1/11
struct venus_state *state = hwif->hwif_data;
//***************************************
spin_lock_irqsave(&ide_lock, flags);
//hwif = HWIF(drive);
hwgroup = HWGROUP(drive);
/* We must not reset with running handlers */
if(hwgroup->handler != NULL)
BUG();
/* For an ATAPI device, first try an ATAPI SRST. */
if (drive->media != ide_disk && !do_not_try_atapi) {
pre_reset(drive);
SELECT_DRIVE(drive);
udelay (20);
// Modified by Frank 96/1/11 for hardware reset
if (state){
hwif->OUTB(0x00, state->rst);
udelay (25); // RESET- asserted >25us
hwif->OUTB(0x01, state->rst);
}else{
hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
}
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE*4;
// *********************************************
hwgroup->polling = 1;
__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
spin_unlock_irqrestore(&ide_lock, flags);
return ide_started;
}
/*
* First, reset any device state data we were maintaining
* for any of the drives on this interface.
*/
for (unit = 0; unit < MAX_DRIVES; ++unit)
pre_reset(&hwif->drives[unit]);
#if OK_TO_RESET_CONTROLLER
if (!IDE_CONTROL_REG) {
spin_unlock_irqrestore(&ide_lock, flags);
return ide_stopped;
}
/*
* Note that we also set nIEN while resetting the device,
* to mask unwanted interrupts from the interface during the reset.
* However, due to the design of PC hardware, this will cause an
* immediate interrupt due to the edge transition it produces.
* This single interrupt gives us a "fast poll" for drives that
* recover from reset very quickly, saving us the first 50ms wait time.
*/
/* set SRST and nIEN */
//hwif->OUTBSYNC(drive, drive->ctl|6,IDE_CONTROL_REG);
/* more than enough time */
printk("%s: ready to reset(x version)\n", drive->name);
if ((readl((void __iomem *) 0xb801a200)& 0xffff)!=0x1282){
unsigned long value = readl((void __iomem *) 0xb801b034);
if ((strcmp(drive->name, "hda")==0)||(strcmp(drive->name, "hdb")==0))
value|=0x01;
else value|=0x04;
writel(value, (void __iomem *) 0xb801b034);
udelay(100);
}
hwif->OUTB(0x00, state->rst);
udelay(10);
hwif->OUTB(0x01, state->rst);
//if (drive->quirk_list == 2) {
/* clear SRST and nIEN */
// hwif->OUTBSYNC(drive, drive->ctl, IDE_CONTROL_REG);
//} else {
/* clear SRST, leave nIEN */
// hwif->OUTBSYNC(drive, drive->ctl|2, IDE_CONTROL_REG);
//}
/* more than enough time */
udelay(10);
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
hwgroup->polling = 1;
__ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
/*
* Some weird controller like resetting themselves to a strange
* state when the disks are reset this way. At least, the Winbond
* 553 documentation says that
*/
//if (hwif->resetproc != NULL) {
// hwif->resetproc(drive);
//}
#endif /* OK_TO_RESET_CONTROLLER */
spin_unlock_irqrestore(&ide_lock, flags);
return ide_started;
}
/*
* Verify that we are doing an approved SETFEATURES_XFER with respect
* to the hardware being able to support request. Since some hardware
* can improperly report capabilties, we check to see if the host adapter
* in combination with the device (usually a disk) properly detect
* and acknowledge each end of the ribbon.
*/
int ide_ata66_check (ide_drive_t *drive, byte cmd, byte nsect, byte feature)
{
if ((cmd == WIN_SETFEATURES) &&
(nsect > XFER_UDMA_2) &&
(feature == SETFEATURES_XFER))
{
if (!HWIF(drive)->udma_four)
{
printk("%s: Speed warnings UDMA 3/4/5 is not functional.\n", HWIF(drive)->name);
return 1;
}
#ifndef CONFIG_IDEDMA_IVB
if ((drive->id->hw_config & 0x6000) == 0)
{
#else /* !CONFIG_IDEDMA_IVB */
if (((drive->id->hw_config & 0x2000) == 0) ||
((drive->id->hw_config & 0x4000) == 0))
{
#endif /* CONFIG_IDEDMA_IVB */
printk("%s: Speed warnings UDMA 3/4/5 is not functional.\n", drive->name);
return 1;
}
}
return 0;
}
/*
* Backside of HDIO_DRIVE_CMD call of SETFEATURES_XFER.
* 1 : Safe to update drive->id DMA registers.
* 0 : OOPs not allowed.
*/
int set_transfer (ide_drive_t *drive, byte cmd, byte nsect, byte feature)
{
if ((cmd == WIN_SETFEATURES) &&
(nsect >= XFER_SW_DMA_0) &&
(feature == SETFEATURES_XFER) &&
(drive->id->dma_ultra ||
drive->id->dma_mword ||
drive->id->dma_1word))
return 1;
return 0;
}
/*
* All hosts that use the 80c ribbon mus use!
*/
byte eighty_ninty_three (ide_drive_t *drive)
{
return ((byte) ((HWIF(drive)->udma_four) &&
#ifndef CONFIG_IDEDMA_IVB
(drive->id->hw_config & 0x4000) &&
#endif /* CONFIG_IDEDMA_IVB */
(drive->id->hw_config & 0x6000)) ? 1 : 0);
}
/*
* Similar to ide_wait_stat(), except it never calls ide_error internally.
* This is a kludge to handle the new ide_config_drive_speed() function,
* and should not otherwise be used anywhere. Eventually, the tuneproc's
* should be updated to return ide_startstop_t, in which case we can get
* rid of this abomination again. :) -ml
*
* It is gone..........
*
* const char *msg == consider adding for verbose errors.
*/
int ide_config_drive_speed (ide_drive_t *drive, byte speed)
{
ide_hwif_t *hwif = HWIF(drive);
int i, error = 1;
byte stat;
#if defined(CONFIG_BLK_DEV_IDEDMA) && !defined(CONFIG_DMA_NONPCI)
byte unit = (drive->select.b.unit & 0x01);
outb(inb(hwif->dma_base+2) & ~(1<<(5+unit)), hwif->dma_base+2);
#endif /* (CONFIG_BLK_DEV_IDEDMA) && !(CONFIG_DMA_NONPCI) */
/*
* Don't use ide_wait_cmd here - it will
* attempt to set_geometry and recalibrate,
* but for some reason these don't work at
* this point (lost interrupt).
*/
/*
* Select the drive, and issue the SETFEATURES command
*/
disable_irq(hwif->irq); /* disable_irq_nosync ?? */
udelay(1);
SELECT_DRIVE(HWIF(drive), drive);
SELECT_MASK(HWIF(drive), drive, 0);
udelay(1);
if (IDE_CONTROL_REG)
OUT_BYTE(drive->ctl | 2, IDE_CONTROL_REG);
OUT_BYTE(speed, IDE_NSECTOR_REG);
OUT_BYTE(SETFEATURES_XFER, IDE_FEATURE_REG);
OUT_BYTE(WIN_SETFEATURES, IDE_COMMAND_REG);
if ((IDE_CONTROL_REG) && (drive->quirk_list == 2))
OUT_BYTE(drive->ctl, IDE_CONTROL_REG);
udelay(1);
/*
* Wait for drive to become non-BUSY
*/
if ((stat = GET_STAT()) & BUSY_STAT)
{
unsigned long flags, timeout;
__save_flags(flags); /* local CPU only */
ide__sti(); /* local CPU only -- for jiffies */
timeout = jiffies + WAIT_CMD;
while ((stat = GET_STAT()) & BUSY_STAT)
{
if (0 < (signed long)(jiffies - timeout))
break;
}
__restore_flags(flags); /* local CPU only */
}
/*
* Allow status to settle, then read it again.
* A few rare drives vastly violate the 400ns spec here,
* so we'll wait up to 10usec for a "good" status
* rather than expensively fail things immediately.
* This fix courtesy of Matthew Faupel & Niccolo Rigacci.
*/
for (i = 0; i < 10; i++)
{
udelay(1);
if (OK_STAT((stat = GET_STAT()), DRIVE_READY, BUSY_STAT|DRQ_STAT|ERR_STAT))
{
error = 0;
break;
}
}
SELECT_MASK(HWIF(drive), drive, 0);
enable_irq(hwif->irq);
if (error)
{
(void) ide_dump_status(drive, "set_drive_speed_status", stat);
return error;
}
drive->id->dma_ultra &= ~0xFF00;
drive->id->dma_mword &= ~0x0F00;
drive->id->dma_1word &= ~0x0F00;
#if defined(CONFIG_BLK_DEV_IDEDMA) && !defined(CONFIG_DMA_NONPCI)
if (speed > XFER_PIO_4)
{
outb(inb(hwif->dma_base+2)|(1<<(5+unit)), hwif->dma_base+2);
}
else
{
outb(inb(hwif->dma_base+2) & ~(1<<(5+unit)), hwif->dma_base+2);
}
#endif /* (CONFIG_BLK_DEV_IDEDMA) && !(CONFIG_DMA_NONPCI) */
switch(speed)
{
case XFER_UDMA_7:
drive->id->dma_ultra |= 0x8080;
break;
case XFER_UDMA_6:
drive->id->dma_ultra |= 0x4040;
break;
case XFER_UDMA_5:
drive->id->dma_ultra |= 0x2020;
break;
case XFER_UDMA_4:
drive->id->dma_ultra |= 0x1010;
break;
case XFER_UDMA_3:
drive->id->dma_ultra |= 0x0808;
break;
case XFER_UDMA_2:
drive->id->dma_ultra |= 0x0404;
break;
case XFER_UDMA_1:
drive->id->dma_ultra |= 0x0202;
break;
case XFER_UDMA_0:
drive->id->dma_ultra |= 0x0101;
break;
case XFER_MW_DMA_2:
drive->id->dma_mword |= 0x0404;
break;
case XFER_MW_DMA_1:
drive->id->dma_mword |= 0x0202;
break;
case XFER_MW_DMA_0:
drive->id->dma_mword |= 0x0101;
break;
case XFER_SW_DMA_2:
drive->id->dma_1word |= 0x0404;
break;
case XFER_SW_DMA_1:
drive->id->dma_1word |= 0x0202;
break;
case XFER_SW_DMA_0:
drive->id->dma_1word |= 0x0101;
break;
default:
break;
}
return error;
}