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drm/nouveau/nouveau: Disable AGP for SiS 761

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SiS 761 chipset does not support AGP cards but has AGP capability (for
the onboard video). At least PC Chips A31G board using this chipset has
an AGP-like AGPro slot that's wired to the PCI bus. Enabling AGP will
fail (GPU lockup and software fbcon, X11 hangs).

Add support for matching just the host bridge in nvkm_device_agp_quirks
and add entry for SiS 761 with mode 0 (AGP disabled).

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ondrej Zary 2015-09-14 21:19:57 +02:00 committed by Ben Skeggs
parent 5102ec3e99
commit 953132b56a
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c
View file

@ -35,6 +35,8 @@ static const struct nvkm_device_agp_quirk
nvkm_device_agp_quirks[] = {
/* VIA Apollo PRO133x / GeForce FX 5600 Ultra - fdo#20341 */
{ PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_NVIDIA, 0x0311, 2 },
/* SiS 761 does not support AGP cards, use PCI mode */
{ PCI_VENDOR_ID_SI, 0x0761, PCI_ANY_ID, PCI_ANY_ID, 0 },
{},
};
@ -137,8 +139,10 @@ nvkm_agp_ctor(struct nvkm_pci *pci)
while (quirk->hostbridge_vendor) {
if (info.device->vendor == quirk->hostbridge_vendor &&
info.device->device == quirk->hostbridge_device &&
pci->pdev->vendor == quirk->chip_vendor &&
pci->pdev->device == quirk->chip_device) {
(quirk->chip_vendor == (u16)PCI_ANY_ID ||
pci->pdev->vendor == quirk->chip_vendor) &&
(quirk->chip_device == (u16)PCI_ANY_ID ||
pci->pdev->device == quirk->chip_device)) {
nvkm_info(subdev, "forcing default agp mode to %dX, "
"use NvAGP=<mode> to override\n",
quirk->mode);