Merge branch 'drm-ttm-unmappable' into drm-core-next

* drm-ttm-unmappable:
  drm/radeon/kms: enable use of unmappable VRAM V2
  drm/ttm: remove io_ field from TTM V6
  drm/vmwgfx: add support for new TTM fault callback V5
  drm/nouveau/kms: add support for new TTM fault callback V5
  drm/radeon/kms: add support for new fault callback V7
  drm/ttm: ttm_fault callback to allow driver to handle bo placement V6
  drm/ttm: split no_wait argument in 2 GPU or reserve wait

Conflicts:
	drivers/gpu/drm/nouveau/nouveau_bo.c

7 files changed, 97 insertions, 60 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 3295154e5934..b3d168fb89e5 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1266,11 +1266,6 @@ int evergreen_mc_init(struct radeon_device *rdev)
         rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
         rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
         rdev->mc.visible_vram_size = rdev->mc.aper_size;
-        /* FIXME remove this once we support unmappable VRAM */
-        if (rdev->mc.mc_vram_size > rdev->mc.aper_size) {
-                rdev->mc.mc_vram_size = rdev->mc.aper_size;
-                rdev->mc.real_vram_size = rdev->mc.aper_size;
-        }
         r600_vram_gtt_location(rdev, &rdev->mc);
         radeon_update_bandwidth_info(rdev);
 
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 9d3b47deecb3..9bdccb964999 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -2036,11 +2036,6 @@ void r100_vram_init_sizes(struct radeon_device *rdev)
                 else
                         rdev->mc.mc_vram_size = rdev->mc.real_vram_size;
         }
-        /* FIXME remove this once we support unmappable VRAM */
-        if (rdev->mc.mc_vram_size > rdev->mc.aper_size) {
-                rdev->mc.mc_vram_size = rdev->mc.aper_size;
-                rdev->mc.real_vram_size = rdev->mc.aper_size;
-        }
 }
 
 void r100_vga_set_state(struct radeon_device *rdev, bool state)
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 9b08c5743c86..c325cb121059 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -730,11 +730,6 @@ int r600_mc_init(struct radeon_device *rdev)
         rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE);
         rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
         rdev->mc.visible_vram_size = rdev->mc.aper_size;
-        /* FIXME remove this once we support unmappable VRAM */
-        if (rdev->mc.mc_vram_size > rdev->mc.aper_size) {
-                rdev->mc.mc_vram_size = rdev->mc.aper_size;
-                rdev->mc.real_vram_size = rdev->mc.aper_size;
-        }
         r600_vram_gtt_location(rdev, &rdev->mc);
 
         if (rdev->flags & RADEON_IS_IGP)
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 122774742bd5..6a8617bac142 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -192,7 +192,7 @@ int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
         }
         for (i = 0; i < bo->placement.num_placement; i++)
                 bo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
-        r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
+        r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false);
         if (likely(r == 0)) {
                 bo->pin_count = 1;
                 if (gpu_addr != NULL)
@@ -216,7 +216,7 @@ int radeon_bo_unpin(struct radeon_bo *bo)
                 return 0;
         for (i = 0; i < bo->placement.num_placement; i++)
                 bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
-        r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
+        r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false, false);
         if (unlikely(r != 0))
                 dev_err(bo->rdev->dev, "%p validate failed for unpin\n", bo);
         return r;
@@ -331,7 +331,7 @@ int radeon_bo_list_validate(struct list_head *head)
                                                                 lobj->rdomain);
                         }
                         r = ttm_bo_validate(&bo->tbo, &bo->placement,
-                                                true, false);
+                                                true, false, false);
                         if (unlikely(r))
                                 return r;
                 }
@@ -499,11 +499,33 @@ void radeon_bo_move_notify(struct ttm_buffer_object *bo,
         radeon_bo_check_tiling(rbo, 0, 1);
 }
 
-void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
+int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 {
+        struct radeon_device *rdev;
         struct radeon_bo *rbo;
+        unsigned long offset, size;
+        int r;
+
         if (!radeon_ttm_bo_is_radeon_bo(bo))
-                return;
+                return 0;
         rbo = container_of(bo, struct radeon_bo, tbo);
         radeon_bo_check_tiling(rbo, 0, 0);
+        rdev = rbo->rdev;
+        if (bo->mem.mem_type == TTM_PL_VRAM) {
+                size = bo->mem.num_pages << PAGE_SHIFT;
+                offset = bo->mem.mm_node->start << PAGE_SHIFT;
+                if ((offset + size) > rdev->mc.visible_vram_size) {
+                        /* hurrah the memory is not visible ! */
+                        radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
+                        rbo->placement.lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT;
+                        r = ttm_bo_validate(bo, &rbo->placement, false, true, false);
+                        if (unlikely(r != 0))
+                                return r;
+                        offset = bo->mem.mm_node->start << PAGE_SHIFT;
+                        /* this should not happen */
+                        if ((offset + size) > rdev->mc.visible_vram_size)
+                                return -EINVAL;
+                }
+        }
+        return 0;
 }
diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h
index 7ab43de1e244..353998dc2c03 100644
--- a/drivers/gpu/drm/radeon/radeon_object.h
+++ b/drivers/gpu/drm/radeon/radeon_object.h
@@ -168,6 +168,6 @@ extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
                                 bool force_drop);
 extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,
                                         struct ttm_mem_reg *mem);
-extern void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
+extern int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
 extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
 #endif
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index f06533676e7d..af98f45954b3 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -163,34 +163,21 @@ static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
                                           (unsigned)type);
                                 return -EINVAL;
                         }
-                        man->io_offset = rdev->mc.agp_base;
-                        man->io_size = rdev->mc.gtt_size;
-                        man->io_addr = NULL;
                         if (!rdev->ddev->agp->cant_use_aperture)
-                                man->flags = TTM_MEMTYPE_FLAG_NEEDS_IOREMAP |
-                                             TTM_MEMTYPE_FLAG_MAPPABLE;
+                                man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
                         man->available_caching = TTM_PL_FLAG_UNCACHED |
                                                  TTM_PL_FLAG_WC;
                         man->default_caching = TTM_PL_FLAG_WC;
-                } else
-#endif
-                {
-                        man->io_offset = 0;
-                        man->io_size = 0;
-                        man->io_addr = NULL;
                 }
+#endif
                 break;
         case TTM_PL_VRAM:
                 /* "On-card" video ram */
                 man->gpu_offset = rdev->mc.vram_start;
                 man->flags = TTM_MEMTYPE_FLAG_FIXED |
-                             TTM_MEMTYPE_FLAG_NEEDS_IOREMAP |
                              TTM_MEMTYPE_FLAG_MAPPABLE;
                 man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
                 man->default_caching = TTM_PL_FLAG_WC;
-                man->io_addr = NULL;
-                man->io_offset = rdev->mc.aper_base;
-                man->io_size = rdev->mc.aper_size;
                 break;
         default:
                 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
@@ -245,9 +232,9 @@ static void radeon_move_null(struct ttm_buffer_object *bo,
 }
 
 static int radeon_move_blit(struct ttm_buffer_object *bo,
-                            bool evict, int no_wait,
-                            struct ttm_mem_reg *new_mem,
-                            struct ttm_mem_reg *old_mem)
+                        bool evict, int no_wait_reserve, bool no_wait_gpu,
+                        struct ttm_mem_reg *new_mem,
+                        struct ttm_mem_reg *old_mem)
 {
         struct radeon_device *rdev;
         uint64_t old_start, new_start;
@@ -291,13 +278,14 @@ static int radeon_move_blit(struct ttm_buffer_object *bo,
         r = radeon_copy(rdev, old_start, new_start, new_mem->num_pages, fence);
         /* FIXME: handle copy error */
         r = ttm_bo_move_accel_cleanup(bo, (void *)fence, NULL,
-                                      evict, no_wait, new_mem);
+                                      evict, no_wait_reserve, no_wait_gpu, new_mem);
         radeon_fence_unref(&fence);
         return r;
 }
 
 static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
-                                bool evict, bool interruptible, bool no_wait,
+                                bool evict, bool interruptible,
+                                bool no_wait_reserve, bool no_wait_gpu,
                                 struct ttm_mem_reg *new_mem)
 {
         struct radeon_device *rdev;
@@ -318,7 +306,7 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
         placement.busy_placement = &placements;
         placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
         r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
-                             interruptible, no_wait);
+                             interruptible, no_wait_reserve, no_wait_gpu);
         if (unlikely(r)) {
                 return r;
         }
@@ -332,11 +320,11 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
         if (unlikely(r)) {
                 goto out_cleanup;
         }
-        r = radeon_move_blit(bo, true, no_wait, &tmp_mem, old_mem);
+        r = radeon_move_blit(bo, true, no_wait_reserve, no_wait_gpu, &tmp_mem, old_mem);
         if (unlikely(r)) {
                 goto out_cleanup;
         }
-        r = ttm_bo_move_ttm(bo, true, no_wait, new_mem);
+        r = ttm_bo_move_ttm(bo, true, no_wait_reserve, no_wait_gpu, new_mem);
 out_cleanup:
         if (tmp_mem.mm_node) {
                 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
@@ -350,7 +338,8 @@ out_cleanup:
 }
 
 static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
-                                bool evict, bool interruptible, bool no_wait,
+                                bool evict, bool interruptible,
+                                bool no_wait_reserve, bool no_wait_gpu,
                                 struct ttm_mem_reg *new_mem)
 {
         struct radeon_device *rdev;
@@ -370,15 +359,15 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
         placement.num_busy_placement = 1;
         placement.busy_placement = &placements;
         placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
-        r = ttm_bo_mem_space(bo, &placement, &tmp_mem, interruptible, no_wait);
+        r = ttm_bo_mem_space(bo, &placement, &tmp_mem, interruptible, no_wait_reserve, no_wait_gpu);
         if (unlikely(r)) {
                 return r;
         }
-        r = ttm_bo_move_ttm(bo, true, no_wait, &tmp_mem);
+        r = ttm_bo_move_ttm(bo, true, no_wait_reserve, no_wait_gpu, &tmp_mem);
         if (unlikely(r)) {
                 goto out_cleanup;
         }
-        r = radeon_move_blit(bo, true, no_wait, new_mem, old_mem);
+        r = radeon_move_blit(bo, true, no_wait_reserve, no_wait_gpu, new_mem, old_mem);
         if (unlikely(r)) {
                 goto out_cleanup;
         }
@@ -395,8 +384,9 @@ out_cleanup:
 }
 
 static int radeon_bo_move(struct ttm_buffer_object *bo,
-                          bool evict, bool interruptible, bool no_wait,
-                          struct ttm_mem_reg *new_mem)
+                        bool evict, bool interruptible,
+                        bool no_wait_reserve, bool no_wait_gpu,
+                        struct ttm_mem_reg *new_mem)
 {
         struct radeon_device *rdev;
         struct ttm_mem_reg *old_mem = &bo->mem;
@@ -423,23 +413,66 @@ static int radeon_bo_move(struct ttm_buffer_object *bo,
         if (old_mem->mem_type == TTM_PL_VRAM &&
             new_mem->mem_type == TTM_PL_SYSTEM) {
                 r = radeon_move_vram_ram(bo, evict, interruptible,
-                                            no_wait, new_mem);
+                                        no_wait_reserve, no_wait_gpu, new_mem);
         } else if (old_mem->mem_type == TTM_PL_SYSTEM &&
                    new_mem->mem_type == TTM_PL_VRAM) {
                 r = radeon_move_ram_vram(bo, evict, interruptible,
-                                            no_wait, new_mem);
+                                            no_wait_reserve, no_wait_gpu, new_mem);
         } else {
-                r = radeon_move_blit(bo, evict, no_wait, new_mem, old_mem);
+                r = radeon_move_blit(bo, evict, no_wait_reserve, no_wait_gpu, new_mem, old_mem);
         }
 
         if (r) {
 memcpy:
-                r = ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
+                r = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);
         }
-
         return r;
 }
 
+static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
+{
+        struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
+        struct radeon_device *rdev = radeon_get_rdev(bdev);
+
+        mem->bus.addr = NULL;
+        mem->bus.offset = 0;
+        mem->bus.size = mem->num_pages << PAGE_SHIFT;
+        mem->bus.base = 0;
+        mem->bus.is_iomem = false;
+        if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
+                return -EINVAL;
+        switch (mem->mem_type) {
+        case TTM_PL_SYSTEM:
+                /* system memory */
+                return 0;
+        case TTM_PL_TT:
+#if __OS_HAS_AGP
+                if (rdev->flags & RADEON_IS_AGP) {
+                        /* RADEON_IS_AGP is set only if AGP is active */
+                        mem->bus.offset = mem->mm_node->start << PAGE_SHIFT;
+                        mem->bus.base = rdev->mc.agp_base;
+                        mem->bus.is_iomem = true;
+                }
+#endif
+                break;
+        case TTM_PL_VRAM:
+                mem->bus.offset = mem->mm_node->start << PAGE_SHIFT;
+                /* check if it's visible */
+                if ((mem->bus.offset + mem->bus.size) > rdev->mc.visible_vram_size)
+                        return -EINVAL;
+                mem->bus.base = rdev->mc.aper_base;
+                mem->bus.is_iomem = true;
+                break;
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static void radeon_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
+{
+}
+
 static int radeon_sync_obj_wait(void *sync_obj, void *sync_arg,
                                 bool lazy, bool interruptible)
 {
@@ -480,6 +513,8 @@ static struct ttm_bo_driver radeon_bo_driver = {
         .sync_obj_ref = &radeon_sync_obj_ref,
         .move_notify = &radeon_bo_move_notify,
         .fault_reserve_notify = &radeon_bo_fault_reserve_notify,
+        .io_mem_reserve = &radeon_ttm_io_mem_reserve,
+        .io_mem_free = &radeon_ttm_io_mem_free,
 };
 
 int radeon_ttm_init(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index c14f3be25b4b..a74683e18612 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -910,11 +910,6 @@ int rv770_mc_init(struct radeon_device *rdev)
         rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE);
         rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
         rdev->mc.visible_vram_size = rdev->mc.aper_size;
-        /* FIXME remove this once we support unmappable VRAM */
-        if (rdev->mc.mc_vram_size > rdev->mc.aper_size) {
-                rdev->mc.mc_vram_size = rdev->mc.aper_size;
-                rdev->mc.real_vram_size = rdev->mc.aper_size;
-        }
         r600_vram_gtt_location(rdev, &rdev->mc);
         radeon_update_bandwidth_info(rdev);