Revert "drm/radeon: do not move bo to different placement at each cs"

This reverts commit d025e9e2b890db679f1246037bf65bd4be512627.

This causes corruption for a number of users and needs further
investigation in the next cycle.
https://bugzilla.kernel.org/show_bug.cgi?id=52491
https://bugs.freedesktop.org/show_bug.cgi?id=58659
http://lists.freedesktop.org/archives/dri-devel/2013-January/032961.html

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 768e8fe..a08f657 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -324,7 +324,6 @@ struct radeon_bo {
        struct list_head                list;
        /* Protected by tbo.reserved */
        u32                             placements[3];
-       u32                             busy_placements[3];
        struct ttm_placement            placement;
        struct ttm_buffer_object        tbo;
        struct ttm_bo_kmap_obj          kmap;

diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 883c95d..d3aface 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -84,6 +84,7 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
        rbo->placement.fpfn = 0;
        rbo->placement.lpfn = 0;
        rbo->placement.placement = rbo->placements;
+       rbo->placement.busy_placement = rbo->placements;
        if (domain & RADEON_GEM_DOMAIN_VRAM)
                rbo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
                                        TTM_PL_FLAG_VRAM;
@@ -104,14 +105,6 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
        if (!c)
                rbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
        rbo->placement.num_placement = c;
-
-       c = 0;
-       rbo->placement.busy_placement = rbo->busy_placements;
-       if (rbo->rdev->flags & RADEON_IS_AGP) {
-               rbo->busy_placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_TT;
-       } else {
-               rbo->busy_placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_TT;
-       }
        rbo->placement.num_busy_placement = c;
 }
 
@@ -357,6 +350,7 @@ int radeon_bo_list_validate(struct list_head *head)
 {
        struct radeon_bo_list *lobj;
        struct radeon_bo *bo;
+       u32 domain;
        int r;
 
        r = ttm_eu_reserve_buffers(head);
@@ -366,9 +360,17 @@ int radeon_bo_list_validate(struct list_head *head)
        list_for_each_entry(lobj, head, tv.head) {
                bo = lobj->bo;
                if (!bo->pin_count) {
+                       domain = lobj->wdomain ? lobj->wdomain : lobj->rdomain;
+                       
+               retry:
+                       radeon_ttm_placement_from_domain(bo, domain);
                        r = ttm_bo_validate(&bo->tbo, &bo->placement,
                                                true, false);
                        if (unlikely(r)) {
+                               if (r != -ERESTARTSYS && domain == RADEON_GEM_DOMAIN_VRAM) {
+                                       domain |= RADEON_GEM_DOMAIN_GTT;
+                                       goto retry;
+                               }
                                return r;
                        }
                }