[PATCH 5/7] drm/amdgpu: update pt shadow while updating pt V2

[Chunming Zhou]

V2:
move shadow parameter to amdgpu_pte_update_params.

Change-Id: Ibc8fb4c5c9be38934ebd6d56f1cbd49cb82d53af
Signed-off-by: Chunming Zhou <David1.Zhou at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index faf6cba..6c0028a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -66,6 +66,8 @@ struct amdgpu_pte_update_params {
 	dma_addr_t *pages_addr;
 	/* indirect buffer to fill with commands */
 	struct amdgpu_ib *ib;
+	/* indicate upodate pt or its shadow */
+	bool shadow;
 };
 
 /**
@@ -752,7 +754,11 @@ static void amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
 	addr = start;
 	pt_idx = addr >> amdgpu_vm_block_size;
 	pt = vm->page_tables[pt_idx].entry.robj;
-
+	if (params->shadow) {
+		if (!pt->shadow)
+			return;
+		pt = vm->page_tables[pt_idx].entry.robj->shadow;
+	}
 	if ((addr & ~mask) == (end & ~mask))
 		nptes = end - addr;
 	else
@@ -771,6 +777,11 @@ static void amdgpu_vm_update_ptes(struct amdgpu_pte_update_params *params,
 	while (addr < end) {
 		pt_idx = addr >> amdgpu_vm_block_size;
 		pt = vm->page_tables[pt_idx].entry.robj;
+		if (params->shadow) {
+			if (!pt->shadow)
+				return;
+			pt = vm->page_tables[pt_idx].entry.robj->shadow;
+		}
 
 		if ((addr & ~mask) == (end & ~mask))
 			nptes = end - addr;
@@ -970,6 +981,9 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
 	if (r)
 		goto error_free;
 
+	params.shadow = true;
+	amdgpu_vm_frag_ptes(&params, vm, start, last + 1, addr, flags);
+	params.shadow = false;
 	amdgpu_vm_frag_ptes(&params, vm, start, last + 1, addr, flags);
 
 	amdgpu_ring_pad_ib(ring, params.ib);
-- 
1.9.1