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pata_pdc202xx_old: implement sff_irq_check() method

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Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Sergei Shtylyov 2010-10-08 18:57:45 +04:00 committed by Jeff Garzik
parent c1ce90f25c
commit 606254e3c1
1 changed files with 23 additions and 0 deletions
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23
drivers/ata/pata_pdc202xx_old.c
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@ -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)