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pdc202xx_old: implement test_irq() method (take 2)

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Implement test_irq() method based on the driver's former dma_test_irq() method.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Sergei Shtylyov 2009-06-15 18:52:59 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 628df2f33d
commit e0321fbe6d
1 changed files with 22 additions and 0 deletions
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22
drivers/ide/pdc202xx_old.c
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@ -104,6 +104,27 @@ static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
}
static int pdc202xx_test_irq(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long high_16 = pci_resource_start(dev, 4);
u8 sc1d = inb(high_16 + 0x1d);
if (hwif->channel) {
/*
* bit 7: error, bit 6: interrupting,
* bit 5: FIFO full, bit 4: FIFO empty
*/
return ((sc1d & 0x50) == 0x40) ? 1 : 0;
} else {
/*
* bit 3: error, bit 2: interrupting,
* bit 1: FIFO full, bit 0: FIFO empty
*/
return ((sc1d & 0x05) == 0x04) ? 1 : 0;
}
}
static u8 pdc2026x_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
@ -231,6 +252,7 @@ static void __devinit pdc202ata4_fixup_irq(struct pci_dev *dev,
static const struct ide_port_ops pdc20246_port_ops = {
.set_pio_mode = pdc202xx_set_pio_mode,
.set_dma_mode = pdc202xx_set_mode,
.test_irq = pdc202xx_test_irq,
};
static const struct ide_port_ops pdc2026x_port_ops = {