diff options
Diffstat (limited to 'drivers/ide/pci/siimage.c')
| -rw-r--r-- | drivers/ide/pci/siimage.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c index 2b9961b8813..f1ca154dd52 100644 --- a/drivers/ide/pci/siimage.c +++ b/drivers/ide/pci/siimage.c @@ -6,7 +6,13 @@ * * May be copied or modified under the terms of the GNU General Public License * - * Documentation available under NDA only + * Documentation for CMD680: + * http://gkernel.sourceforge.net/specs/sii/sii-0680a-v1.31.pdf.bz2 + * + * Documentation for SiI 3112: + * http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2 + * + * Errata and other documentation only available under NDA. * * * FAQ Items: @@ -701,6 +707,7 @@ 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 +733,14 @@ 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); } |