From d868dd19ad0828b1b3b56f3b06bd4a39971847be Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Thu, 10 Nov 2005 00:19:14 +0100 Subject: [PATCH] [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: John W. Linville Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/pci/siimage.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c index 2b9961b88135..022d244f2eb0 100644 --- a/drivers/ide/pci/siimage.c +++ b/drivers/ide/pci/siimage.c @@ -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); } -- 2.39.5