Change-Id: Icafa90a6625ea7b5ab3e360ba0d73544cda251b0
Signed-off-by: Chunming Zhou <david1.z...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 68 +++++++++++++++++++++++-----------
2 files changed, 48 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 4b3c6d2..a7951aa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -891,6 +891,7 @@ struct amdgpu_vm {
/* contains the page directory */
struct amdgpu_bo *page_directory;
+ struct amdgpu_bo_list_entry pd_entry_shadow;
unsigned max_pde_used;
struct fence *page_directory_fence;
uint64_t last_eviction_counter;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index e7a400d..fb8a7ab 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -138,13 +138,15 @@ void amdgpu_vm_get_pt_bos(struct amdgpu_device *adev,
struct amdgpu_vm *vm,
/* add the vm page table to the list */
for (i = 0; i <= vm->max_pde_used; ++i) {
struct amdgpu_bo_list_entry *entry = &vm->page_tables[i].entry;
+ struct amdgpu_bo_list_entry *entry_shadow =
&vm->page_tables[i].entry_shadow;
- if (!entry->robj)
+ if (!entry->robj || !entry_shadow->robj)
continue;
list_add(&entry->tv.head, duplicates);
+ list_add(&entry_shadow->tv.head, duplicates);
}
-
+ list_add(&vm->pd_entry_shadow.tv.head, duplicates);
}
/**
@@ -597,23 +599,13 @@ uint64_t amdgpu_vm_map_gart(const dma_addr_t *pages_addr,
uint64_t addr)
return result;
}
-/**
- * amdgpu_vm_update_pdes - make sure that page directory is valid
- *
- * @adev: amdgpu_device pointer
- * @vm: requested vm
- * @start: start of GPU address range
- * @end: end of GPU address range
- *
- * Allocates new page tables if necessary
- * and updates the page directory.
- * Returns 0 for success, error for failure.
- */
-int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
- struct amdgpu_vm *vm)
+
+static int amdgpu_vm_update_pd_or_shadow(struct amdgpu_device *adev,
+ struct amdgpu_vm *vm, bool shadow)
{
struct amdgpu_ring *ring;
- struct amdgpu_bo *pd = vm->page_directory;
+ struct amdgpu_bo *pd = shadow ? vm->page_directory->shadow :
+ vm->page_directory;
uint64_t pd_addr = amdgpu_bo_gpu_offset(pd);
uint32_t incr = AMDGPU_VM_PTE_COUNT * 8;
uint64_t last_pde = ~0, last_pt = ~0;
@@ -648,10 +640,15 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device
*adev,
continue;
pt = amdgpu_bo_gpu_offset(bo);
- if (vm->page_tables[pt_idx].addr == pt)
- continue;
- vm->page_tables[pt_idx].addr = pt;
- vm->page_tables[pt_idx].addr_shadow = pt;
+ if (!shadow) {
+ if (vm->page_tables[pt_idx].addr == pt)
+ continue;
+ vm->page_tables[pt_idx].addr = pt;
+ } else {
+ if (vm->page_tables[pt_idx].addr_shadow == pt)
+ continue;
+ vm->page_tables[pt_idx].addr_shadow = pt;
+ }
pde = pd_addr + pt_idx * 8;
if (((last_pde + 8 * count) != pde) ||
@@ -704,6 +701,29 @@ error_free:
}
/**
+ * amdgpu_vm_update_pdes - make sure that page directory is valid
+ *
+ * @adev: amdgpu_device pointer
+ * @vm: requested vm
+ * @start: start of GPU address range
+ * @end: end of GPU address range
+ *
+ * Allocates new page tables if necessary
+ * and updates the page directory.
+ * Returns 0 for success, error for failure.
+ */
+int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
+ struct amdgpu_vm *vm)
+{
+ int r;
+
+ r = amdgpu_vm_update_pd_or_shadow(adev, vm, true);
+ if (r)
+ return r;
+ return amdgpu_vm_update_pd_or_shadow(adev, vm, false);
+}
+
+/**
* amdgpu_vm_frag_ptes - add fragment information to PTEs
*
* @adev: amdgpu_device pointer
@@ -1573,6 +1593,12 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct
amdgpu_vm *vm)
goto error_free_page_directory;
vm->last_eviction_counter = atomic64_read(&adev->num_evictions);
+ vm->pd_entry_shadow.robj = vm->page_directory->shadow;
+ vm->pd_entry_shadow.priority = 0;
+ vm->pd_entry_shadow.tv.bo = &vm->page_directory->shadow->tbo;
+ vm->pd_entry_shadow.tv.shared = true;
+ vm->pd_entry_shadow.user_pages = NULL;
+
return 0;
error_free_page_directory:
--
1.9.1
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