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drm/radeon/kms: Fallback to non AGP when acceleration fails to initialize (v2)

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When GPU acceleration is not working with AGP try to fallback to non
AGP GART (either PCI or PCIE GART). This should make KMS failure on
AGP less painfull. We still need to find out what is wrong when AGP
fails but at least user have a lot of more chances to get a working
configuration with acceleration. This patch also cleanup R600/RV770
fallback path so they use same code as others asics. Version 2
factorize agp disabling logic to avoid code duplication and bugs.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse
2009-10-06 19:04:29 +02:00
committed by Dave Airlie
parent 01ceae8edd
commit b574f251f7
3 changed files with 34 additions and 53 deletions
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51
drivers/gpu/drm/radeon/radeon_device.c
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@@ -476,6 +476,27 @@ void radeon_combios_fini(struct radeon_device *rdev)
{
}
void radeon_agp_disable(struct radeon_device *rdev)
{
rdev->flags &= ~RADEON_IS_AGP;
if (rdev->family >= CHIP_R600) {
DRM_INFO("Forcing AGP to PCIE mode\n");
rdev->flags |= RADEON_IS_PCIE;
} else if (rdev->family >= CHIP_RV515 ||
rdev->family == CHIP_RV380 ||
rdev->family == CHIP_RV410 ||
rdev->family == CHIP_R423) {
DRM_INFO("Forcing AGP to PCIE mode\n");
rdev->flags |= RADEON_IS_PCIE;
rdev->asic->gart_tlb_flush = &rv370_pcie_gart_tlb_flush;
rdev->asic->gart_set_page = &rv370_pcie_gart_set_page;
} else {
DRM_INFO("Forcing AGP to PCI mode\n");
rdev->flags |= RADEON_IS_PCI;
rdev->asic->gart_tlb_flush = &r100_pci_gart_tlb_flush;
rdev->asic->gart_set_page = &r100_pci_gart_set_page;
}
}
/*
* Radeon device.
@@ -515,24 +536,7 @@ int radeon_device_init(struct radeon_device *rdev,
}
if (radeon_agpmode == -1) {
rdev->flags &= ~RADEON_IS_AGP;
if (rdev->family >= CHIP_R600) {
DRM_INFO("Forcing AGP to PCIE mode\n");
rdev->flags |= RADEON_IS_PCIE;
} else if (rdev->family >= CHIP_RV515 ||
rdev->family == CHIP_RV380 ||
rdev->family == CHIP_RV410 ||
rdev->family == CHIP_R423) {
DRM_INFO("Forcing AGP to PCIE mode\n");
rdev->flags |= RADEON_IS_PCIE;
rdev->asic->gart_tlb_flush = &rv370_pcie_gart_tlb_flush;
rdev->asic->gart_set_page = &rv370_pcie_gart_set_page;
} else {
DRM_INFO("Forcing AGP to PCI mode\n");
rdev->flags |= RADEON_IS_PCI;
rdev->asic->gart_tlb_flush = &r100_pci_gart_tlb_flush;
rdev->asic->gart_set_page = &r100_pci_gart_set_page;
}
radeon_agp_disable(rdev);
}
/* set DMA mask + need_dma32 flags.
@@ -565,8 +569,17 @@ int radeon_device_init(struct radeon_device *rdev,
DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
r = radeon_init(rdev);
if (r) {
if (r)
return r;
if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
/* Acceleration not working on AGP card try again
* with fallback to PCI or PCIE GART
*/
radeon_fini(rdev);
radeon_agp_disable(rdev);
r = radeon_init(rdev);
if (r)
return r;
}
if (radeon_testing) {
radeon_test_moves(rdev);