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drm/amdgpu: drm/amdgpu: Set correct DMA mask for gfx12.1

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Set correct DMA mask for gfx12

Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a2ef14ee25)
This commit is contained in:
Harish Kasiviswanathan 2026-05-12 10:57:49 -04:00 committed by Alex Deucher
parent ae4e30f24d
commit e3fa02872e
1 changed files with 8 additions and 4 deletions
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12
drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
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@ -812,7 +812,7 @@ static int gmc_v12_0_gart_init(struct amdgpu_device *adev)
static int gmc_v12_0_sw_init(struct amdgpu_ip_block *ip_block)
{
int r, vram_width = 0, vram_type = 0, vram_vendor = 0;
int r, vram_width = 0, vram_type = 0, vram_vendor = 0, dma_addr_bits;
struct amdgpu_device *adev = ip_block->adev;
uint64_t pte_addr_mask = 0;
int i;
@ -845,6 +845,7 @@ static int gmc_v12_0_sw_init(struct amdgpu_ip_block *ip_block)
*/
amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
pte_addr_mask = 0x0000FFFFFFFFF000ULL; /* 48 bit PA */
dma_addr_bits = 44;
break;
case IP_VERSION(12, 1, 0):
bitmap_set(adev->vmhubs_mask, AMDGPU_GFXHUB(0),
@ -858,9 +859,12 @@ static int gmc_v12_0_sw_init(struct amdgpu_ip_block *ip_block)
*/
amdgpu_vm_adjust_size(adev, 128 * 1024 * 1024, 9, 4, 57);
pte_addr_mask = 0x000FFFFFFFFFF000ULL; /* 52 bit PA */
dma_addr_bits = 52;
break;
default:
break;
dev_warn(adev->dev, "Unrecognized GC IP version: 0x%08x\n",
amdgpu_ip_version(adev, GC_HWIP, 0));
return -EINVAL;
}
/* This interrupt is VMC page fault.*/
@ -916,13 +920,13 @@ static int gmc_v12_0_sw_init(struct amdgpu_ip_block *ip_block)
adev->gmc.mc_mask = AMDGPU_GMC_HOLE_MASK;
adev->gmc.pte_addr_mask = pte_addr_mask;
r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44));
r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(dma_addr_bits));
if (r) {
drm_warn(adev_to_drm(adev), "No suitable DMA available.\n");
return r;
}
adev->need_swiotlb = drm_need_swiotlb(44);
adev->need_swiotlb = drm_need_swiotlb(dma_addr_bits);
r = gmc_v12_0_mc_init(adev);
if (r)