Aldebaran has 48-bit physical address support
Signed-off-by: Harish Kasiviswanathan <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 412e44af1608..0765c163b355 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1675,12 +1675,17 @@ static int gmc_v9_0_sw_init(void *handle)
*/
adev->gmc.mc_mask = 0xffffffffffffULL; /* 48 bit MC */
- r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44));
+ if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 2)) {
+ r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(48));
+ adev->need_swiotlb = drm_need_swiotlb(48);
+ } else {
+ r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44));
+ adev->need_swiotlb = drm_need_swiotlb(44);
+ }
if (r) {
printk(KERN_WARNING "amdgpu: No suitable DMA available.\n");
return r;
}
- adev->need_swiotlb = drm_need_swiotlb(44);
r = gmc_v9_0_mc_init(adev);
if (r)
--
2.25.1
