diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-08-15 10:27:03 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-08-15 18:51:01 +0300 |
| commit | 244511f386ccb90f3bea889e4d86a289015898f9 (patch) | |
| tree | 8fe585cc2b155327fe77856b095965ef58dbfcba /drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | |
| parent | 03127c58b93d7da5edb53118bdafabdcae3581ef (diff) | |
| download | linux-244511f386ccb90f3bea889e4d86a289015898f9.tar.xz | |
drm/amdgpu: simplify and cleanup setting the dma mask
Use dma_set_mask_and_coherent to set both masks in one go, and remove
the no longer required fallback, as the kernel now always accepts
larger than required DMA masks. Fail the driver probe if we can't
set the DMA mask, as that means the system can only support a larger
mask.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index 9238280d1ff7..909a8764703e 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -1079,7 +1079,6 @@ static unsigned gmc_v8_0_get_vbios_fb_size(struct amdgpu_device *adev) static int gmc_v8_0_sw_init(void *handle) { int r; - int dma_bits; struct amdgpu_device *adev = (struct amdgpu_device *)handle; if (adev->flags & AMD_IS_APU) { @@ -1116,25 +1115,12 @@ static int gmc_v8_0_sw_init(void *handle) */ adev->gmc.mc_mask = 0xffffffffffULL; /* 40 bit MC */ - /* set DMA mask + need_dma32 flags. - * PCIE - can handle 40-bits. - * IGP - can handle 40-bits - * PCI - dma32 for legacy pci gart, 40 bits on newer asics - */ - adev->need_dma32 = false; - dma_bits = adev->need_dma32 ? 32 : 40; - r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); + r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(40)); if (r) { - adev->need_dma32 = true; - dma_bits = 32; pr_warn("amdgpu: No suitable DMA available\n"); + return r; } - r = pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); - if (r) { - pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32)); - pr_warn("amdgpu: No coherent DMA available\n"); - } - adev->need_swiotlb = drm_need_swiotlb(dma_bits); + adev->need_swiotlb = drm_need_swiotlb(40); r = gmc_v8_0_init_microcode(adev); if (r) { |