From: Christian König <christian.koe...@amd.com>
Convert GTT mappings into linear ones for huge page handling.
Signed-off-by: Christian König <christian.koe...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 24 +++++++++++++++++++++---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 3c86381..16454bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1732,6 +1732,7 @@ static int amdgpu_vm_bo_split_mapping(struct
amdgpu_device *adev,
}
do {
+ dma_addr_t *dma_addr = NULL;
uint64_t max_entries;
uint64_t addr, last;
@@ -1745,15 +1746,32 @@ static int amdgpu_vm_bo_split_mapping(struct
amdgpu_device *adev,
}
if (pages_addr) {
+ uint64_t count;
+
max_entries = min(max_entries, 16ull * 1024ull);
- addr = 0;
+ for (count = 1; count < max_entries; ++count) {
+ uint64_t idx = pfn + count;
+
+ if (pages_addr[idx] !=
+ (pages_addr[idx - 1] + PAGE_SIZE))
+ break;
+ }
+
+ if (count < 64) {
+ addr = pfn << PAGE_SHIFT;
+ dma_addr = pages_addr;
+ } else {
+ addr = pages_addr[pfn];
+ max_entries = count;
+ }
+
} else if (flags & AMDGPU_PTE_VALID) {
addr += adev->vm_manager.vram_base_offset;
+ addr += pfn << PAGE_SHIFT;
}
- addr += pfn << PAGE_SHIFT;
last = min((uint64_t)mapping->last, start + max_entries - 1);
- r = amdgpu_vm_bo_update_mapping(adev, exclusive, pages_addr, vm,
+ r = amdgpu_vm_bo_update_mapping(adev, exclusive, dma_addr, vm,
start, last, flags, addr,
fence);
if (r)
--
2.7.4
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
