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Commit d868dd19 authored by John W. Linville's avatar John W. Linville Committed by Bartlomiej Zolnierkiewicz
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[PATCH] siimage: enable interrupts on Adaptec SA-1210 card 



The siimage driver proports to support the Adaptec SA-1210 SATA
controller.  However, at least some of those cards boot-up with their
interrupts disabled internally.  The siimage driver currently ignores
that fact, so that driver does not actually work with those cards.
This patch enables those interrupts on cards that need it.

[ This is implemented based on similar code in the libata-based
  sata_sil driver. ]

Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 25000c2c

drivers/ide/pci/siimage.c

+9 −0
Original line number Diff line number Diff line
@@ -701,6 +701,7 @@ static unsigned int setup_mmio_siimage (struct pci_dev *dev, const char *name) 
	unsigned long barsize	= pci_resource_len(dev, 5);

	u8 tmpbyte	= 0;

	void __iomem *ioaddr;

	u32 tmp, irq_mask;



	/*

	 *	Drop back to PIO if we can't map the mmio. Some
@@ -726,6 +727,14 @@ static unsigned int setup_mmio_siimage (struct pci_dev *dev, const char *name) 
	pci_set_drvdata(dev, (void *) ioaddr);



	if (pdev_is_sata(dev)) {

		/* make sure IDE0/1 interrupts are not masked */

		irq_mask = (1 << 22) | (1 << 23);

		tmp = readl(ioaddr + 0x48);

		if (tmp & irq_mask) {

			tmp &= ~irq_mask;

			writel(tmp, ioaddr + 0x48);

			readl(ioaddr + 0x48); /* flush */

		}

		writel(0, ioaddr + 0x148);

		writel(0, ioaddr + 0x1C8);

	}