commit db0f8c4f55adb85a6beaeb8d75cb9ee812854d67
Author: Michel Dänzer <michel.daenzer@amd.com>
Date:   Wed Oct 8 16:34:46 2014 +0900

    winsys/radeon: Use separate caching buffer manager for each set of flags
    
    Otherwise the caching buffer manager may return a buffer which was created
    with a different set of flags, which can cause trouble.

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
index e61e9fd..9518e53 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
@@ -822,17 +822,12 @@ radeon_winsys_bo_create(struct radeon_winsys *rws,
     desc.flags = flags;
 
     /* Assign a buffer manager. */
+    assert(flags < RADEON_NUM_CACHE_MANAGERS);
     if (use_reusable_pool) {
-        if (domain == RADEON_DOMAIN_VRAM) {
-            if (flags & RADEON_FLAG_GTT_WC)
-                provider = ws->cman_vram_gtt_wc;
-            else
-                provider = ws->cman_vram;
-        } else if (flags & RADEON_FLAG_GTT_WC) {
-            provider = ws->cman_gtt_wc;
-        } else {
-            provider = ws->cman_gtt;
-        }
+        if (domain == RADEON_DOMAIN_VRAM)
+            provider = ws->cman_vram[flags];
+        else
+            provider = ws->cman_gtt[flags];
     } else {
         provider = ws->kman;
     }
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
index 3b695f9..c67549e 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.c
@@ -441,6 +441,7 @@ static boolean do_winsys_init(struct radeon_drm_winsys *ws)
 static void radeon_winsys_destroy(struct radeon_winsys *rws)
 {
     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
+    int i;
 
     if (ws->thread) {
         ws->kill_thread = 1;
@@ -453,10 +454,10 @@ static void radeon_winsys_destroy(struct radeon_winsys *rws)
     pipe_mutex_destroy(ws->cmask_owner_mutex);
     pipe_mutex_destroy(ws->cs_stack_lock);
 
-    ws->cman_vram->destroy(ws->cman_vram);
-    ws->cman_vram_gtt_wc->destroy(ws->cman_vram_gtt_wc);
-    ws->cman_gtt->destroy(ws->cman_gtt);
-    ws->cman_gtt_wc->destroy(ws->cman_gtt_wc);
+    for (i = 0; i < RADEON_NUM_CACHE_MANAGERS; i++) {
+        ws->cman_gtt[i]->destroy(ws->cman_gtt[i]);
+        ws->cman_vram[i]->destroy(ws->cman_vram[i]);
+    }
     ws->kman->destroy(ws->kman);
     if (ws->gen >= DRV_R600) {
         radeon_surface_manager_free(ws->surf_man);
@@ -643,6 +644,7 @@ PUBLIC struct radeon_winsys *
 radeon_drm_winsys_create(int fd, radeon_screen_create_t screen_create)
 {
     struct radeon_drm_winsys *ws;
+    int i;
 
     pipe_mutex_lock(fd_tab_mutex);
     if (!fd_tab) {
@@ -671,22 +673,18 @@ radeon_drm_winsys_create(int fd, radeon_screen_create_t screen_create)
     ws->kman = radeon_bomgr_create(ws);
     if (!ws->kman)
         goto fail;
-    ws->cman_vram = pb_cache_manager_create(ws->kman, 1000000, 2.0f, 0,
-                                            ws->info.vram_size / 8);
-    if (!ws->cman_vram)
-        goto fail;
-    ws->cman_vram_gtt_wc = pb_cache_manager_create(ws->kman, 1000000, 2.0f, 0,
+
+    for (i = 0; i < RADEON_NUM_CACHE_MANAGERS; i++) {
+        ws->cman_vram[i] = pb_cache_manager_create(ws->kman, 1000000, 2.0f, 0,
                                                    ws->info.vram_size / 8);
-    if (!ws->cman_vram_gtt_wc)
-        goto fail;
-    ws->cman_gtt = pb_cache_manager_create(ws->kman, 1000000, 2.0f, 0,
-                                           ws->info.gart_size / 8);
-    if (!ws->cman_gtt)
-        goto fail;
-    ws->cman_gtt_wc = pb_cache_manager_create(ws->kman, 1000000, 2.0f, 0,
-                                              ws->info.gart_size / 8);
-    if (!ws->cman_gtt_wc)
-        goto fail;
+        if (!ws->cman_vram[i])
+            goto fail;
+
+        ws->cman_gtt[i] = pb_cache_manager_create(ws->kman, 1000000, 2.0f, 0,
+                                                  ws->info.gart_size / 8);
+        if (!ws->cman_gtt[i])
+            goto fail;
+    }
 
     if (ws->gen >= DRV_R600) {
         ws->surf_man = radeon_surface_manager_new(fd);
@@ -741,14 +739,12 @@ radeon_drm_winsys_create(int fd, radeon_screen_create_t screen_create)
 
 fail:
     pipe_mutex_unlock(fd_tab_mutex);
-    if (ws->cman_gtt)
-        ws->cman_gtt->destroy(ws->cman_gtt);
-    if (ws->cman_gtt_wc)
-        ws->cman_gtt_wc->destroy(ws->cman_gtt_wc);
-    if (ws->cman_vram)
-        ws->cman_vram->destroy(ws->cman_vram);
-    if (ws->cman_vram_gtt_wc)
-        ws->cman_vram_gtt_wc->destroy(ws->cman_vram_gtt_wc);
+    for (i = 0; i < RADEON_NUM_CACHE_MANAGERS; i++) {
+        if (ws->cman_gtt[i])
+            ws->cman_gtt[i]->destroy(ws->cman_gtt[i]);
+        if (ws->cman_vram[i])
+            ws->cman_vram[i]->destroy(ws->cman_vram[i]);
+    }
     if (ws->kman)
         ws->kman->destroy(ws->kman);
     if (ws->surf_man)
diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.h b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.h
index aebc391..a2adf4b 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_winsys.h
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_winsys.h
@@ -41,6 +41,8 @@ enum radeon_generation {
     DRV_SI
 };
 
+#define RADEON_NUM_CACHE_MANAGERS 8
+
 struct radeon_drm_winsys {
     struct radeon_winsys base;
     struct pipe_reference reference;
@@ -58,10 +60,8 @@ struct radeon_drm_winsys {
     uint32_t accel_working2;
 
     struct pb_manager *kman;
-    struct pb_manager *cman_vram;
-    struct pb_manager *cman_vram_gtt_wc;
-    struct pb_manager *cman_gtt;
-    struct pb_manager *cman_gtt_wc;
+    struct pb_manager *cman_vram[RADEON_NUM_CACHE_MANAGERS];
+    struct pb_manager *cman_gtt[RADEON_NUM_CACHE_MANAGERS];
     struct radeon_surface_manager *surf_man;
 
     uint32_t num_cpus;      /* Number of CPUs. */