diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2011-10-05 10:02:57 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-10-10 09:11:31 +0100 |
| commit | 005a83f1412f4405694d08e95836bbdd88ea0109 (patch) | |
| tree | 5783421089ed0cebf435625e9179bd04802c8ab9 | |
| parent | c245cb9e15055ed5dcf7eaf29232badb0059fdc1 (diff) | |
| download | blackbird-op-linux-005a83f1412f4405694d08e95836bbdd88ea0109.tar.gz blackbird-op-linux-005a83f1412f4405694d08e95836bbdd88ea0109.zip | |
drm/radeon/kms: set DMA mask properly on newer PCI asics
If a card wasn't PCIE, we always set the DMA mask to 32 bits.
This is only applies to the old rage128/r1xx gart block on
early radeon asics (~r1xx-r4xx). Newer PCI and IGP cards
can handle 40 bits just fine.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Chen Jie <chenj@lemote.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 31b1f4bf133e..cc695d05bd2b 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -750,14 +750,15 @@ int radeon_device_init(struct radeon_device *rdev, /* set DMA mask + need_dma32 flags. * PCIE - can handle 40-bits. - * IGP - can handle 40-bits (in theory) + * IGP - can handle 40-bits * AGP - generally dma32 is safest - * PCI - only dma32 + * PCI - dma32 for legacy pci gart, 40 bits on newer asics */ rdev->need_dma32 = false; if (rdev->flags & RADEON_IS_AGP) rdev->need_dma32 = true; - if (rdev->flags & RADEON_IS_PCI) + if ((rdev->flags & RADEON_IS_PCI) && + (rdev->family < CHIP_RS400)) rdev->need_dma32 = true; dma_bits = rdev->need_dma32 ? 32 : 40; |
