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edac: mv64x60 add pci fixup

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Fixup of missing bit 0 on 64360 PCIx_ERR_MASK and errata FEr-#11 and
FEr-#16 for the 64460.  Bit 0 must remain 0.

Signed-off-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Doug Thompson <dougthompson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dave Jiang 2008-07-25 01:49:14 -07:00 committed by Linus Torvalds
parent 596d394103
commit fcb19171d1
1 changed files with 35 additions and 0 deletions
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35
drivers/edac/mv64x60_edac.c
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@ -71,6 +71,35 @@ static irqreturn_t mv64x60_pci_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
/*
* Bit 0 of MV64x60_PCIx_ERR_MASK does not exist on the 64360 and because of
* errata FEr-#11 and FEr-##16 for the 64460, it should be 0 on that chip as
* well. IOW, don't set bit 0.
*/
/* Erratum FEr PCI-#16: clear bit 0 of PCI SERRn Mask reg. */
static int __init mv64x60_pci_fixup(struct platform_device *pdev)
{
struct resource *r;
void __iomem *pci_serr;
r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!r) {
printk(KERN_ERR "%s: Unable to get resource for "
"PCI err regs\n", __func__);
return -ENOENT;
}
pci_serr = ioremap(r->start, r->end - r->start + 1);
if (!pci_serr)
return -ENOMEM;
out_le32(pci_serr, in_le32(pci_serr) & ~0x1);
iounmap(pci_serr);
return 0;
}
static int __devinit mv64x60_pci_err_probe(struct platform_device *pdev)
{
struct edac_pci_ctl_info *pci;
@ -128,6 +157,12 @@ static int __devinit mv64x60_pci_err_probe(struct platform_device *pdev)
goto err;
}
res = mv64x60_pci_fixup(pdev);
if (res < 0) {
printk(KERN_ERR "%s: PCI fixup failed\n", __func__);
goto err;
}
out_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_CAUSE, 0);
out_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_MASK, 0);
out_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_MASK,