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author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-23 19:55:52 +0200 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-23 19:55:52 +0200 |
commit | 6e6afb3b7401f0181da74a1add57f126946b43e6 (patch) | |
tree | 2ca80a7fa25a387b5f3d479d9e94b1339ee440ac /drivers/ide/ide-iops.c | |
parent | 1f6d8a0fd8f6cc5ee2219a8cf9b2da16dfd67397 (diff) | |
download | linux-6e6afb3b7401f0181da74a1add57f126946b43e6.tar.gz linux-6e6afb3b7401f0181da74a1add57f126946b43e6.tar.bz2 linux-6e6afb3b7401f0181da74a1add57f126946b43e6.zip |
ide: add ->set_irq method
Add ->set_irq method for setting nIEN bit of ATA Device Control
register and use it instead of ide_set_irq().
While at it:
* Use ->set_irq in init_irq() and do_reset1().
* Don't use HWIF() macro in ide_check_pm_state().
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-iops.c')
-rw-r--r-- | drivers/ide/ide-iops.c | 37 |
1 files changed, 27 insertions, 10 deletions
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c index e106954e13f9..41ec53f329fa 100644 --- a/drivers/ide/ide-iops.c +++ b/drivers/ide/ide-iops.c @@ -135,6 +135,23 @@ static u8 ide_read_sff_dma_status(ide_hwif_t *hwif) return inb(hwif->dma_base + ATA_DMA_STATUS); } +static void ide_set_irq(ide_hwif_t *hwif, int on) +{ + u8 ctl = ATA_DEVCTL_OBS; + + if (on == 4) { /* hack for SRST */ + ctl |= 4; + on &= ~4; + } + + ctl |= on ? 0 : 2; + + if (hwif->host_flags & IDE_HFLAG_MMIO) + writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr); + else + outb(ctl, hwif->io_ports.ctl_addr); +} + static void ide_tf_load(ide_drive_t *drive, ide_task_t *task) { ide_hwif_t *hwif = drive->hwif; @@ -360,6 +377,8 @@ void default_hwif_transport(ide_hwif_t *hwif) hwif->read_altstatus = ide_read_altstatus; hwif->read_sff_dma_status = ide_read_sff_dma_status; + hwif->set_irq = ide_set_irq; + hwif->tf_load = ide_tf_load; hwif->tf_read = ide_tf_read; @@ -722,7 +741,7 @@ int ide_driveid_update(ide_drive_t *drive) */ SELECT_MASK(drive, 1); - ide_set_irq(drive, 0); + hwif->set_irq(hwif, 0); msleep(50); hwif->exec_command(hwif, WIN_IDENTIFY); timeout = jiffies + WAIT_WORSTCASE; @@ -808,12 +827,12 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed) SELECT_DRIVE(drive); SELECT_MASK(drive, 0); udelay(1); - ide_set_irq(drive, 0); + hwif->set_irq(hwif, 0); hwif->OUTB(speed, io_ports->nsect_addr); hwif->OUTB(SETFEATURES_XFER, io_ports->feature_addr); hwif->exec_command(hwif, WIN_SETFEATURES); if (drive->quirk_list == 2) - ide_set_irq(drive, 1); + hwif->set_irq(hwif, 1); error = __ide_wait_stat(drive, drive->ready_stat, BUSY_STAT|DRQ_STAT|ERR_STAT, @@ -1129,7 +1148,6 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) ide_hwgroup_t *hwgroup; struct ide_io_ports *io_ports; const struct ide_port_ops *port_ops; - u8 ctl; spin_lock_irqsave(&ide_lock, flags); hwif = HWIF(drive); @@ -1174,16 +1192,15 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi) * 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. + * + * TODO: add ->softreset method and stop abusing ->set_irq */ /* set SRST and nIEN */ - hwif->OUTBSYNC(hwif, ATA_DEVCTL_OBS | 6, io_ports->ctl_addr); + hwif->set_irq(hwif, 4); /* more than enough time */ udelay(10); - if (drive->quirk_list == 2) - ctl = ATA_DEVCTL_OBS; /* clear SRST and nIEN */ - else - ctl = ATA_DEVCTL_OBS | 2; /* clear SRST, leave nIEN */ - hwif->OUTBSYNC(hwif, ctl, io_ports->ctl_addr); + /* clear SRST, leave nIEN (unless device is on the quirk list) */ + hwif->set_irq(hwif, drive->quirk_list == 2); /* more than enough time */ udelay(10); hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE; |