1 files changed, 53 insertions, 21 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index a68d7566178c..1770d3c07fd0 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -78,11 +78,9 @@ int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
         int r;
 
         if (rdev->gart.table.vram.robj == NULL) {
-                r = radeon_object_create(rdev, NULL,
-                                         rdev->gart.table_size,
-                                         true,
-                                         RADEON_GEM_DOMAIN_VRAM,
-                                         false, &rdev->gart.table.vram.robj);
+                r = radeon_bo_create(rdev, NULL, rdev->gart.table_size,
+                                        true, RADEON_GEM_DOMAIN_VRAM,
+                                        &rdev->gart.table.vram.robj);
                 if (r) {
                         return r;
                 }
@@ -95,32 +93,38 @@ int radeon_gart_table_vram_pin(struct radeon_device *rdev)
         uint64_t gpu_addr;
         int r;
 
-        r = radeon_object_pin(rdev->gart.table.vram.robj,
-                              RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
-        if (r) {
-                radeon_object_unref(&rdev->gart.table.vram.robj);
+        r = radeon_bo_reserve(rdev->gart.table.vram.robj, false);
+        if (unlikely(r != 0))
                 return r;
-        }
-        r = radeon_object_kmap(rdev->gart.table.vram.robj,
-                               (void **)&rdev->gart.table.vram.ptr);
+        r = radeon_bo_pin(rdev->gart.table.vram.robj,
+                                RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
         if (r) {
-                radeon_object_unpin(rdev->gart.table.vram.robj);
-                radeon_object_unref(&rdev->gart.table.vram.robj);
-                DRM_ERROR("radeon: failed to map gart vram table.\n");
+                radeon_bo_unreserve(rdev->gart.table.vram.robj);
                 return r;
         }
+        r = radeon_bo_kmap(rdev->gart.table.vram.robj,
+                                (void **)&rdev->gart.table.vram.ptr);
+        if (r)
+                radeon_bo_unpin(rdev->gart.table.vram.robj);
+        radeon_bo_unreserve(rdev->gart.table.vram.robj);
         rdev->gart.table_addr = gpu_addr;
-        return 0;
+        return r;
 }
 
 void radeon_gart_table_vram_free(struct radeon_device *rdev)
 {
+        int r;
+
         if (rdev->gart.table.vram.robj == NULL) {
                 return;
         }
-        radeon_object_kunmap(rdev->gart.table.vram.robj);
-        radeon_object_unpin(rdev->gart.table.vram.robj);
-        radeon_object_unref(&rdev->gart.table.vram.robj);
+        r = radeon_bo_reserve(rdev->gart.table.vram.robj, false);
+        if (likely(r == 0)) {
+                radeon_bo_kunmap(rdev->gart.table.vram.robj);
+                radeon_bo_unpin(rdev->gart.table.vram.robj);
+                radeon_bo_unreserve(rdev->gart.table.vram.robj);
+        }
+        radeon_bo_unref(&rdev->gart.table.vram.robj);
 }
 
 
@@ -135,6 +139,7 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
         unsigned t;
         unsigned p;
         int i, j;
+        u64 page_base;
 
         if (!rdev->gart.ready) {
                 WARN(1, "trying to unbind memory to unitialized GART !\n");
@@ -147,9 +152,11 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
                         pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p],
                                        PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
                         rdev->gart.pages[p] = NULL;
-                        rdev->gart.pages_addr[p] = 0;
+                        rdev->gart.pages_addr[p] = rdev->dummy_page.addr;
+                        page_base = rdev->gart.pages_addr[p];
                         for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
-                                radeon_gart_set_page(rdev, t, 0);
+                                radeon_gart_set_page(rdev, t, page_base);
+                                page_base += RADEON_GPU_PAGE_SIZE;
                         }
                 }
         }
@@ -195,8 +202,26 @@ int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
         return 0;
 }
 
+void radeon_gart_restore(struct radeon_device *rdev)
+{
+        int i, j, t;
+        u64 page_base;
+
+        for (i = 0, t = 0; i < rdev->gart.num_cpu_pages; i++) {
+                page_base = rdev->gart.pages_addr[i];
+                for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
+                        radeon_gart_set_page(rdev, t, page_base);
+                        page_base += RADEON_GPU_PAGE_SIZE;
+                }
+        }
+        mb();
+        radeon_gart_tlb_flush(rdev);
+}
+
 int radeon_gart_init(struct radeon_device *rdev)
 {
+        int r, i;
+
         if (rdev->gart.pages) {
                 return 0;
         }
@@ -205,6 +230,9 @@ int radeon_gart_init(struct radeon_device *rdev)
                 DRM_ERROR("Page size is smaller than GPU page size!\n");
                 return -EINVAL;
         }
+        r = radeon_dummy_page_init(rdev);
+        if (r)
+                return r;
         /* Compute table size */
         rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE;
         rdev->gart.num_gpu_pages = rdev->mc.gtt_size / RADEON_GPU_PAGE_SIZE;
@@ -223,6 +251,10 @@ int radeon_gart_init(struct radeon_device *rdev)
                 radeon_gart_fini(rdev);
                 return -ENOMEM;
         }
+        /* set GART entry to point to the dummy page by default */
+        for (i = 0; i < rdev->gart.num_cpu_pages; i++) {
+                rdev->gart.pages_addr[i] = rdev->dummy_page.addr;
+        }
         return 0;
 }