Commit 606254e3 authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by Jeff Garzik
Browse files

pata_pdc202xx_old: implement sff_irq_check() method 



Signed-off-by: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent c1ce90f2

drivers/ata/pata_pdc202xx_old.c

+23 −0
Original line number Diff line number Diff line
@@ -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)