diff options
| author | Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2009-06-07 17:37:03 +0400 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-06-07 17:37:03 +0400 |
| commit | 72b9304f04d0724a25251e9e9041aa95f89c15dd (patch) | |
| tree | 57c6536da5a336388de5b93c5b2d65e7db2ec43c /drivers/ide/pdc202xx_old.c | |
| parent | 6250d3af2a1036fb356264442211a4246c7d64c7 (diff) | |
| download | linux-72b9304f04d0724a25251e9e9041aa95f89c15dd.tar.xz | |
pdc202xx_old: use ide_dma_test_irq()
The driver's dma_test_irq() method, although tests some chip specific interrupt
bits, finally always relies on the SFF-8038i standard interrupt bit. I see no
point in testing the bits that are not trusted anyway -- the driver should be
fully able to use the standard method implemetation, ide_dma_test_irq().
With this change 'pdc202xx_dma_ops' finally becomes identical to 'sff_dma_ops',
and we can get rid of it...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pdc202xx_old.c')
| -rw-r--r-- | drivers/ide/pdc202xx_old.c | 39 |
1 files changed, 2 insertions, 37 deletions
diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c index b3bc96f930a6..668f452d74e9 100644 --- a/drivers/ide/pdc202xx_old.c +++ b/drivers/ide/pdc202xx_old.c @@ -203,30 +203,6 @@ static int pdc202xx_dma_end(ide_drive_t *drive) return ide_dma_end(drive); } -static int pdc202xx_dma_test_irq(ide_drive_t *drive) -{ - ide_hwif_t *hwif = drive->hwif; - unsigned long high_16 = hwif->extra_base - 16; - u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS); - u8 sc1d = inb(high_16 + 0x001d); - - if (hwif->channel) { - /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */ - if ((sc1d & 0x50) == 0x50) - goto somebody_else; - else if ((sc1d & 0x40) == 0x40) - return (dma_stat & 4) == 4; - } else { - /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */ - if ((sc1d & 0x05) == 0x05) - goto somebody_else; - else if ((sc1d & 0x04) == 0x04) - return (dma_stat & 4) == 4; - } -somebody_else: - return (dma_stat & 4) == 4; /* return 1 if INTR asserted */ -} - static void pdc202xx_reset(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; @@ -313,23 +289,12 @@ static const struct ide_port_ops pdc2026x_port_ops = { .cable_detect = pdc2026x_cable_detect, }; -static const struct ide_dma_ops pdc20246_dma_ops = { - .dma_host_set = ide_dma_host_set, - .dma_setup = ide_dma_setup, - .dma_start = ide_dma_start, - .dma_end = ide_dma_end, - .dma_test_irq = pdc202xx_dma_test_irq, - .dma_lost_irq = ide_dma_lost_irq, - .dma_timer_expiry = ide_dma_sff_timer_expiry, - .dma_sff_read_status = ide_dma_sff_read_status, -}; - static const struct ide_dma_ops pdc2026x_dma_ops = { .dma_host_set = ide_dma_host_set, .dma_setup = ide_dma_setup, .dma_start = pdc202xx_dma_start, .dma_end = pdc202xx_dma_end, - .dma_test_irq = pdc202xx_dma_test_irq, + .dma_test_irq = ide_dma_test_irq, .dma_lost_irq = pdc202xx_dma_lost_irq, .dma_timer_expiry = ide_dma_sff_timer_expiry, .dma_clear = pdc202xx_reset, @@ -354,7 +319,7 @@ static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = { .name = DRV_NAME, .init_chipset = init_chipset_pdc202xx, .port_ops = &pdc20246_port_ops, - .dma_ops = &pdc20246_dma_ops, + .dma_ops = &sff_dma_ops, .host_flags = IDE_HFLAGS_PDC202XX, .pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, |