From e0321fbe6d34b4bb514fb6daff9e0859e5d76001 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Mon, 15 Jun 2009 18:52:59 +0200 Subject: pdc202xx_old: implement test_irq() method (take 2) Implement test_irq() method based on the driver's former dma_test_irq() method. Signed-off-by: Sergei Shtylyov Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/pdc202xx_old.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/ide') diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c index 4f5b536..cb812f3 100644 --- a/drivers/ide/pdc202xx_old.c +++ b/drivers/ide/pdc202xx_old.c @@ -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 = { -- cgit v1.1