diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-08-15 10:27:00 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-08-15 18:51:00 +0300 |
| commit | 33b3ad3788aba846fc8b9a065fe2685a0b64f713 (patch) | |
| tree | da8753e92081d2a541240f4ce56dc7a30a58927f /drivers/gpu/drm/radeon/radeon_device.c | |
| parent | b8cf3219ccd5c0f05f6265fff26cce0de8061e38 (diff) | |
| download | linux-33b3ad3788aba846fc8b9a065fe2685a0b64f713.tar.xz | |
drm/radeon: handle PCIe root ports with addressing limitations
radeon uses a need_dma32 flag to indicate to the drm core that some
allocations need to be done using GFP_DMA32, but it only checks the
device addressing capabilities to make that decision. Unfortunately
PCIe root ports that have limited addressing exist as well. Use the
dma_addressing_limited instead to also take those into account.
Reviewed-by: Christian König <christian.koenig@amd.com>
Reported-by: Atish Patra <Atish.Patra@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_device.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index dceb554e5674..b8cc05826667 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1365,27 +1365,25 @@ int radeon_device_init(struct radeon_device *rdev, else rdev->mc.mc_mask = 0xffffffffULL; /* 32 bit MC */ - /* set DMA mask + need_dma32 flags. + /* set DMA mask. * PCIE - can handle 40-bits. * IGP - can handle 40-bits * AGP - generally dma32 is safest * PCI - dma32 for legacy pci gart, 40 bits on newer asics */ - rdev->need_dma32 = false; + dma_bits = 40; if (rdev->flags & RADEON_IS_AGP) - rdev->need_dma32 = true; + dma_bits = 32; if ((rdev->flags & RADEON_IS_PCI) && (rdev->family <= CHIP_RS740)) - rdev->need_dma32 = true; + dma_bits = 32; #ifdef CONFIG_PPC64 if (rdev->family == CHIP_CEDAR) - rdev->need_dma32 = true; + dma_bits = 32; #endif - dma_bits = rdev->need_dma32 ? 32 : 40; r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits)); if (r) { - rdev->need_dma32 = true; dma_bits = 32; pr_warn("radeon: No suitable DMA available\n"); } |