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| author | Dave Jiang <djiang@mvista.com> | 2008-07-25 01:49:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-25 10:53:49 -0700 |
| commit | fcb19171d196172a4f57e056f7a60e6d1e2e8c85 (patch) | |
| tree | 3a43569afbfa42c05f3a1ea06f580996ab4cb7d6 /drivers/edac/mv64x60_edac.c | |
| parent | 596d3941035d4d4b484c820f10f57fd4816c6615 (diff) | |
| download | linux-fcb19171d196172a4f57e056f7a60e6d1e2e8c85.tar.bz2 | |
edac: mv64x60 add pci fixup
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>
Diffstat (limited to 'drivers/edac/mv64x60_edac.c')
| -rw-r--r-- | drivers/edac/mv64x60_edac.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/edac/mv64x60_edac.c b/drivers/edac/mv64x60_edac.c index de69163ff5b3..083ce8d0c63d 100644 --- a/drivers/edac/mv64x60_edac.c +++ b/drivers/edac/mv64x60_edac.c @@ -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, |