From: Sergei Shtylyov Date: Fri, 8 Oct 2010 14:57:45 +0000 (+0400) Subject: pata_pdc202xx_old: implement sff_irq_check() method X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=606254e3c1faeb091203c58c2da8e3e4433aae6d;p=openwrt%2Fstaging%2Fblogic.git pata_pdc202xx_old: implement sff_irq_check() method Signed-off-by: Sergei Shtylyov Signed-off-by: Jeff Garzik --- diff --git a/drivers/ata/pata_pdc202xx_old.c b/drivers/ata/pata_pdc202xx_old.c index c39f213e1bbc..c2ed5868dda6 100644 --- a/drivers/ata/pata_pdc202xx_old.c +++ b/drivers/ata/pata_pdc202xx_old.c @@ -44,6 +44,27 @@ static void pdc202xx_exec_command(struct ata_port *ap, ndelay(400); } +static bool pdc202xx_irq_check(struct ata_port *ap) +{ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + unsigned long master = pci_resource_start(pdev, 4); + u8 sc1d = inb(master + 0x1d); + + if (ap->port_no) { + /* + * bit 7: error, bit 6: interrupting, + * bit 5: FIFO full, bit 4: FIFO empty + */ + return sc1d & 0x40; + } else { + /* + * bit 3: error, bit 2: interrupting, + * bit 1: FIFO full, bit 0: FIFO empty + */ + return sc1d & 0x04; + } +} + /** * pdc202xx_configure_piomode - set chip PIO timing * @ap: ATA interface @@ -282,6 +303,7 @@ static struct ata_port_operations pdc2024x_port_ops = { .set_dmamode = pdc202xx_set_dmamode, .sff_exec_command = pdc202xx_exec_command, + .sff_irq_check = pdc202xx_irq_check, }; static struct ata_port_operations pdc2026x_port_ops = { @@ -297,6 +319,7 @@ static struct ata_port_operations pdc2026x_port_ops = { .port_start = pdc2026x_port_start, .sff_exec_command = pdc202xx_exec_command, + .sff_irq_check = pdc202xx_irq_check, }; static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)