drm/nouveau: Pre-G80 tiling support.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>

8 files changed, 185 insertions, 147 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 48d0ad9434a8..446a92ad2eef 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -277,8 +277,13 @@ struct nouveau_timer_engine {
 };
 
 struct nouveau_fb_engine {
+        int num_tiles;
+
         int  (*init)(struct drm_device *dev);
         void (*takedown)(struct drm_device *dev);
+
+        void (*set_region_tiling)(struct drm_device *dev, int i, uint32_t addr,
+                                 uint32_t size, uint32_t pitch);
 };
 
 struct nouveau_fifo_engine {
@@ -332,6 +337,9 @@ struct nouveau_pgraph_engine {
         void (*destroy_context)(struct nouveau_channel *);
         int  (*load_context)(struct nouveau_channel *);
         int  (*unload_context)(struct drm_device *);
+
+        void (*set_region_tiling)(struct drm_device *dev, int i, uint32_t addr,
+                                  uint32_t size, uint32_t pitch);
 };
 
 struct nouveau_engine {
@@ -881,10 +889,14 @@ extern void nv04_fb_takedown(struct drm_device *);
 /* nv10_fb.c */
 extern int  nv10_fb_init(struct drm_device *);
 extern void nv10_fb_takedown(struct drm_device *);
+extern void nv10_fb_set_region_tiling(struct drm_device *, int, uint32_t,
+                                      uint32_t, uint32_t);
 
 /* nv40_fb.c */
 extern int  nv40_fb_init(struct drm_device *);
 extern void nv40_fb_takedown(struct drm_device *);
+extern void nv40_fb_set_region_tiling(struct drm_device *, int, uint32_t,
+                                      uint32_t, uint32_t);
 
 /* nv04_fifo.c */
 extern int  nv04_fifo_init(struct drm_device *);
@@ -945,6 +957,8 @@ extern void nv10_graph_destroy_context(struct nouveau_channel *);
 extern int  nv10_graph_load_context(struct nouveau_channel *);
 extern int  nv10_graph_unload_context(struct drm_device *);
 extern void nv10_graph_context_switch(struct drm_device *);
+extern void nv10_graph_set_region_tiling(struct drm_device *, int, uint32_t,
+                                         uint32_t, uint32_t);
 
 /* nv20_graph.c */
 extern struct nouveau_pgraph_object_class nv20_graph_grclass[];
@@ -956,6 +970,8 @@ extern int  nv20_graph_unload_context(struct drm_device *);
 extern int  nv20_graph_init(struct drm_device *);
 extern void nv20_graph_takedown(struct drm_device *);
 extern int  nv30_graph_init(struct drm_device *);
+extern void nv20_graph_set_region_tiling(struct drm_device *, int, uint32_t,
+                                         uint32_t, uint32_t);
 
 /* nv40_graph.c */
 extern struct nouveau_pgraph_object_class nv40_graph_grclass[];
@@ -967,6 +983,8 @@ extern void nv40_graph_destroy_context(struct nouveau_channel *);
 extern int  nv40_graph_load_context(struct nouveau_channel *);
 extern int  nv40_graph_unload_context(struct drm_device *);
 extern void nv40_grctx_init(struct nouveau_grctx *);
+extern void nv40_graph_set_region_tiling(struct drm_device *, int, uint32_t,
+                                         uint32_t, uint32_t);
 
 /* nv50_graph.c */
 extern struct nouveau_pgraph_object_class nv50_graph_grclass[];
diff --git a/drivers/gpu/drm/nouveau/nouveau_reg.h b/drivers/gpu/drm/nouveau/nouveau_reg.h
index fa1b0e7165b9..251f1b3b38b9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_reg.h
+++ b/drivers/gpu/drm/nouveau/nouveau_reg.h
@@ -349,19 +349,19 @@
 #define NV04_PGRAPH_BLEND                                  0x00400824
 #define NV04_PGRAPH_STORED_FMT                             0x00400830
 #define NV04_PGRAPH_PATT_COLORRAM                          0x00400900
-#define NV40_PGRAPH_TILE0(i)                               (0x00400900 + (i*16))
-#define NV40_PGRAPH_TLIMIT0(i)                             (0x00400904 + (i*16))
-#define NV40_PGRAPH_TSIZE0(i)                              (0x00400908 + (i*16))
-#define NV40_PGRAPH_TSTATUS0(i)                            (0x0040090C + (i*16))
+#define NV20_PGRAPH_TILE(i)                                (0x00400900 + (i*16))
+#define NV20_PGRAPH_TLIMIT(i)                              (0x00400904 + (i*16))
+#define NV20_PGRAPH_TSIZE(i)                               (0x00400908 + (i*16))
+#define NV20_PGRAPH_TSTATUS(i)                             (0x0040090C + (i*16))
 #define NV10_PGRAPH_TILE(i)                                (0x00400B00 + (i*16))
 #define NV10_PGRAPH_TLIMIT(i)                              (0x00400B04 + (i*16))
 #define NV10_PGRAPH_TSIZE(i)                               (0x00400B08 + (i*16))
 #define NV10_PGRAPH_TSTATUS(i)                             (0x00400B0C + (i*16))
 #define NV04_PGRAPH_U_RAM                                  0x00400D00
-#define NV47_PGRAPH_TILE0(i)                               (0x00400D00 + (i*16))
-#define NV47_PGRAPH_TLIMIT0(i)                             (0x00400D04 + (i*16))
-#define NV47_PGRAPH_TSIZE0(i)                              (0x00400D08 + (i*16))
-#define NV47_PGRAPH_TSTATUS0(i)                            (0x00400D0C + (i*16))
+#define NV47_PGRAPH_TILE(i)                                (0x00400D00 + (i*16))
+#define NV47_PGRAPH_TLIMIT(i)                              (0x00400D04 + (i*16))
+#define NV47_PGRAPH_TSIZE(i)                               (0x00400D08 + (i*16))
+#define NV47_PGRAPH_TSTATUS(i)                             (0x00400D0C + (i*16))
 #define NV04_PGRAPH_V_RAM                                  0x00400D40
 #define NV04_PGRAPH_W_RAM                                  0x00400D80
 #define NV10_PGRAPH_COMBINER0_IN_ALPHA                     0x00400E40
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 9f988431f34c..6a459139910f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -102,6 +102,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->timer.takedown          = nv04_timer_takedown;
                 engine->fb.init                 = nv10_fb_init;
                 engine->fb.takedown             = nv10_fb_takedown;
+                engine->fb.set_region_tiling    = nv10_fb_set_region_tiling;
                 engine->graph.grclass           = nv10_graph_grclass;
                 engine->graph.init              = nv10_graph_init;
                 engine->graph.takedown          = nv10_graph_takedown;
@@ -111,6 +112,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->graph.fifo_access       = nv04_graph_fifo_access;
                 engine->graph.load_context      = nv10_graph_load_context;
                 engine->graph.unload_context    = nv10_graph_unload_context;
+                engine->graph.set_region_tiling = nv10_graph_set_region_tiling;
                 engine->fifo.channels           = 32;
                 engine->fifo.init               = nv10_fifo_init;
                 engine->fifo.takedown           = nouveau_stub_takedown;
@@ -143,6 +145,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->timer.takedown          = nv04_timer_takedown;
                 engine->fb.init                 = nv10_fb_init;
                 engine->fb.takedown             = nv10_fb_takedown;
+                engine->fb.set_region_tiling    = nv10_fb_set_region_tiling;
                 engine->graph.grclass           = nv20_graph_grclass;
                 engine->graph.init              = nv20_graph_init;
                 engine->graph.takedown          = nv20_graph_takedown;
@@ -152,6 +155,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->graph.fifo_access       = nv04_graph_fifo_access;
                 engine->graph.load_context      = nv20_graph_load_context;
                 engine->graph.unload_context    = nv20_graph_unload_context;
+                engine->graph.set_region_tiling = nv20_graph_set_region_tiling;
                 engine->fifo.channels           = 32;
                 engine->fifo.init               = nv10_fifo_init;
                 engine->fifo.takedown           = nouveau_stub_takedown;
@@ -184,6 +188,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->timer.takedown          = nv04_timer_takedown;
                 engine->fb.init                 = nv10_fb_init;
                 engine->fb.takedown             = nv10_fb_takedown;
+                engine->fb.set_region_tiling    = nv10_fb_set_region_tiling;
                 engine->graph.grclass           = nv30_graph_grclass;
                 engine->graph.init              = nv30_graph_init;
                 engine->graph.takedown          = nv20_graph_takedown;
@@ -193,6 +198,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->graph.destroy_context   = nv20_graph_destroy_context;
                 engine->graph.load_context      = nv20_graph_load_context;
                 engine->graph.unload_context    = nv20_graph_unload_context;
+                engine->graph.set_region_tiling = nv20_graph_set_region_tiling;
                 engine->fifo.channels           = 32;
                 engine->fifo.init               = nv10_fifo_init;
                 engine->fifo.takedown           = nouveau_stub_takedown;
@@ -226,6 +232,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->timer.takedown          = nv04_timer_takedown;
                 engine->fb.init                 = nv40_fb_init;
                 engine->fb.takedown             = nv40_fb_takedown;
+                engine->fb.set_region_tiling    = nv40_fb_set_region_tiling;
                 engine->graph.grclass           = nv40_graph_grclass;
                 engine->graph.init              = nv40_graph_init;
                 engine->graph.takedown          = nv40_graph_takedown;
@@ -235,6 +242,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                 engine->graph.destroy_context   = nv40_graph_destroy_context;
                 engine->graph.load_context      = nv40_graph_load_context;
                 engine->graph.unload_context    = nv40_graph_unload_context;
+                engine->graph.set_region_tiling = nv40_graph_set_region_tiling;
                 engine->fifo.channels           = 32;
                 engine->fifo.init               = nv40_fifo_init;
                 engine->fifo.takedown           = nouveau_stub_takedown;
diff --git a/drivers/gpu/drm/nouveau/nv10_fb.c b/drivers/gpu/drm/nouveau/nv10_fb.c
index 79e2d104d70a..cc5cda44e501 100644
--- a/drivers/gpu/drm/nouveau/nv10_fb.c
+++ b/drivers/gpu/drm/nouveau/nv10_fb.c
@@ -3,17 +3,37 @@
 #include "nouveau_drv.h"
 #include "nouveau_drm.h"
 
+void
+nv10_fb_set_region_tiling(struct drm_device *dev, int i, uint32_t addr,
+                          uint32_t size, uint32_t pitch)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        uint32_t limit = max(1u, addr + size) - 1;
+
+        if (pitch) {
+                if (dev_priv->card_type >= NV_20)
+                        addr |= 1;
+                else
+                        addr |= 1 << 31;
+        }
+
+        nv_wr32(dev, NV10_PFB_TLIMIT(i), limit);
+        nv_wr32(dev, NV10_PFB_TSIZE(i), pitch);
+        nv_wr32(dev, NV10_PFB_TILE(i), addr);
+}
+
 int
 nv10_fb_init(struct drm_device *dev)
 {
-        uint32_t fb_bar_size;
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
         int i;
 
-        fb_bar_size = drm_get_resource_len(dev, 0) - 1;
-        for (i = 0; i < NV10_PFB_TILE__SIZE; i++) {
-                nv_wr32(dev, NV10_PFB_TILE(i), 0);
-                nv_wr32(dev, NV10_PFB_TLIMIT(i), fb_bar_size);
-        }
+        pfb->num_tiles = NV10_PFB_TILE__SIZE;
+
+        /* Turn all the tiling regions off. */
+        for (i = 0; i < pfb->num_tiles; i++)
+                pfb->set_region_tiling(dev, i, 0, 0, 0);
 
         return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nv10_graph.c b/drivers/gpu/drm/nouveau/nv10_graph.c
index 6870e0ee2e7e..fcf2cdd19493 100644
--- a/drivers/gpu/drm/nouveau/nv10_graph.c
+++ b/drivers/gpu/drm/nouveau/nv10_graph.c
@@ -807,6 +807,20 @@ void nv10_graph_destroy_context(struct nouveau_channel *chan)
         chan->pgraph_ctx = NULL;
 }
 
+void
+nv10_graph_set_region_tiling(struct drm_device *dev, int i, uint32_t addr,
+                             uint32_t size, uint32_t pitch)
+{
+        uint32_t limit = max(1u, addr + size) - 1;
+
+        if (pitch)
+                addr |= 1 << 31;
+
+        nv_wr32(dev, NV10_PGRAPH_TLIMIT(i), limit);
+        nv_wr32(dev, NV10_PGRAPH_TSIZE(i), pitch);
+        nv_wr32(dev, NV10_PGRAPH_TILE(i), addr);
+}
+
 int nv10_graph_init(struct drm_device *dev)
 {
         struct drm_nouveau_private *dev_priv = dev->dev_private;
@@ -838,17 +852,9 @@ int nv10_graph_init(struct drm_device *dev)
         } else
                 nv_wr32(dev, NV10_PGRAPH_DEBUG_4, 0x00000000);
 
-        /* copy tile info from PFB */
-        for (i = 0; i < NV10_PFB_TILE__SIZE; i++) {
-                nv_wr32(dev, NV10_PGRAPH_TILE(i),
-                                        nv_rd32(dev, NV10_PFB_TILE(i)));
-                nv_wr32(dev, NV10_PGRAPH_TLIMIT(i),
-                                        nv_rd32(dev, NV10_PFB_TLIMIT(i)));
-                nv_wr32(dev, NV10_PGRAPH_TSIZE(i),
-                                        nv_rd32(dev, NV10_PFB_TSIZE(i)));
-                nv_wr32(dev, NV10_PGRAPH_TSTATUS(i),
-                                        nv_rd32(dev, NV10_PFB_TSTATUS(i)));
-        }
+        /* Turn all the tiling regions off. */
+        for (i = 0; i < NV10_PFB_TILE__SIZE; i++)
+                nv10_graph_set_region_tiling(dev, i, 0, 0, 0);
 
         nv_wr32(dev, NV10_PGRAPH_CTX_SWITCH1, 0x00000000);
         nv_wr32(dev, NV10_PGRAPH_CTX_SWITCH2, 0x00000000);
diff --git a/drivers/gpu/drm/nouveau/nv20_graph.c b/drivers/gpu/drm/nouveau/nv20_graph.c
index 18ba74f19703..d6fc0a82f03d 100644
--- a/drivers/gpu/drm/nouveau/nv20_graph.c
+++ b/drivers/gpu/drm/nouveau/nv20_graph.c
@@ -514,6 +514,27 @@ nv20_graph_rdi(struct drm_device *dev)
         nouveau_wait_for_idle(dev);
 }
 
+void
+nv20_graph_set_region_tiling(struct drm_device *dev, int i, uint32_t addr,
+                             uint32_t size, uint32_t pitch)
+{
+        uint32_t limit = max(1u, addr + size) - 1;
+
+        if (pitch)
+                addr |= 1;
+
+        nv_wr32(dev, NV20_PGRAPH_TLIMIT(i), limit);
+        nv_wr32(dev, NV20_PGRAPH_TSIZE(i), pitch);
+        nv_wr32(dev, NV20_PGRAPH_TILE(i), addr);
+
+        nv_wr32(dev, NV10_PGRAPH_RDI_INDEX, 0x00EA0030 + 4 * i);
+        nv_wr32(dev, NV10_PGRAPH_RDI_DATA, limit);
+        nv_wr32(dev, NV10_PGRAPH_RDI_INDEX, 0x00EA0050 + 4 * i);
+        nv_wr32(dev, NV10_PGRAPH_RDI_DATA, pitch);
+        nv_wr32(dev, NV10_PGRAPH_RDI_INDEX, 0x00EA0010 + 4 * i);
+        nv_wr32(dev, NV10_PGRAPH_RDI_DATA, addr);
+}
+
 int
 nv20_graph_init(struct drm_device *dev)
 {
@@ -572,27 +593,10 @@ nv20_graph_init(struct drm_device *dev)
                 nv_wr32(dev, NV10_PGRAPH_RDI_DATA , 0x00000030);
         }
 
-        /* copy tile info from PFB */
-        for (i = 0; i < NV10_PFB_TILE__SIZE; i++) {
-                nv_wr32(dev, 0x00400904 + i * 0x10,
-                                        nv_rd32(dev, NV10_PFB_TLIMIT(i)));
-                        /* which is NV40_PGRAPH_TLIMIT0(i) ?? */
-                nv_wr32(dev, NV10_PGRAPH_RDI_INDEX, 0x00EA0030 + i * 4);
-                nv_wr32(dev, NV10_PGRAPH_RDI_DATA,
-                                        nv_rd32(dev, NV10_PFB_TLIMIT(i)));
-                nv_wr32(dev, 0x00400908 + i * 0x10,
-                                        nv_rd32(dev, NV10_PFB_TSIZE(i)));
-                        /* which is NV40_PGRAPH_TSIZE0(i) ?? */
-                nv_wr32(dev, NV10_PGRAPH_RDI_INDEX, 0x00EA0050 + i * 4);
-                nv_wr32(dev, NV10_PGRAPH_RDI_DATA,
-                                        nv_rd32(dev, NV10_PFB_TSIZE(i)));
-                nv_wr32(dev, 0x00400900 + i * 0x10,
-                                        nv_rd32(dev, NV10_PFB_TILE(i)));
-                        /* which is NV40_PGRAPH_TILE0(i) ?? */
-                nv_wr32(dev, NV10_PGRAPH_RDI_INDEX, 0x00EA0010 + i * 4);
-                nv_wr32(dev, NV10_PGRAPH_RDI_DATA,
-                                        nv_rd32(dev, NV10_PFB_TILE(i)));
-        }
+        /* Turn all the tiling regions off. */
+        for (i = 0; i < NV10_PFB_TILE__SIZE; i++)
+                nv20_graph_set_region_tiling(dev, i, 0, 0, 0);
+
         for (i = 0; i < 8; i++) {
                 nv_wr32(dev, 0x400980 + i * 4, nv_rd32(dev, 0x100300 + i * 4));
                 nv_wr32(dev, NV10_PGRAPH_RDI_INDEX, 0x00EA0090 + i * 4);
@@ -704,18 +708,9 @@ nv30_graph_init(struct drm_device *dev)
 
         nv_wr32(dev, 0x4000c0, 0x00000016);
 
-        /* copy tile info from PFB */
-        for (i = 0; i < NV10_PFB_TILE__SIZE; i++) {
-                nv_wr32(dev, 0x00400904 + i * 0x10,
-                                        nv_rd32(dev, NV10_PFB_TLIMIT(i)));
-                        /* which is NV40_PGRAPH_TLIMIT0(i) ?? */
-                nv_wr32(dev, 0x00400908 + i * 0x10,
-                                        nv_rd32(dev, NV10_PFB_TSIZE(i)));
-                        /* which is NV40_PGRAPH_TSIZE0(i) ?? */
-                nv_wr32(dev, 0x00400900 + i * 0x10,
-                                        nv_rd32(dev, NV10_PFB_TILE(i)));
-                        /* which is NV40_PGRAPH_TILE0(i) ?? */
-        }
+        /* Turn all the tiling regions off. */
+        for (i = 0; i < NV10_PFB_TILE__SIZE; i++)
+                nv20_graph_set_region_tiling(dev, i, 0, 0, 0);
 
         nv_wr32(dev, NV10_PGRAPH_CTX_CONTROL, 0x10000100);
         nv_wr32(dev, NV10_PGRAPH_STATE      , 0xFFFFFFFF);
diff --git a/drivers/gpu/drm/nouveau/nv40_fb.c b/drivers/gpu/drm/nouveau/nv40_fb.c
index ca1d27107a8e..3cd07d8d5bd7 100644
--- a/drivers/gpu/drm/nouveau/nv40_fb.c
+++ b/drivers/gpu/drm/nouveau/nv40_fb.c
@@ -3,12 +3,37 @@
 #include "nouveau_drv.h"
 #include "nouveau_drm.h"
 
+void
+nv40_fb_set_region_tiling(struct drm_device *dev, int i, uint32_t addr,
+                          uint32_t size, uint32_t pitch)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        uint32_t limit = max(1u, addr + size) - 1;
+
+        if (pitch)
+                addr |= 1;
+
+        switch (dev_priv->chipset) {
+        case 0x40:
+                nv_wr32(dev, NV10_PFB_TLIMIT(i), limit);
+                nv_wr32(dev, NV10_PFB_TSIZE(i), pitch);
+                nv_wr32(dev, NV10_PFB_TILE(i), addr);
+                break;
+
+        default:
+                nv_wr32(dev, NV40_PFB_TLIMIT(i), limit);
+                nv_wr32(dev, NV40_PFB_TSIZE(i), pitch);
+                nv_wr32(dev, NV40_PFB_TILE(i), addr);
+                break;
+        }
+}
+
 int
 nv40_fb_init(struct drm_device *dev)
 {
         struct drm_nouveau_private *dev_priv = dev->dev_private;
-        uint32_t fb_bar_size, tmp;
-        int num_tiles;
+        struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
+        uint32_t tmp;
         int i;
 
         /* This is strictly a NV4x register (don't know about NV5x). */
@@ -23,35 +48,23 @@ nv40_fb_init(struct drm_device *dev)
         case 0x45:
                 tmp = nv_rd32(dev, NV10_PFB_CLOSE_PAGE2);
                 nv_wr32(dev, NV10_PFB_CLOSE_PAGE2, tmp & ~(1 << 15));
-                num_tiles = NV10_PFB_TILE__SIZE;
+                pfb->num_tiles = NV10_PFB_TILE__SIZE;
                 break;
         case 0x46: /* G72 */
         case 0x47: /* G70 */
         case 0x49: /* G71 */
         case 0x4b: /* G73 */
         case 0x4c: /* C51 (G7X version) */
-                num_tiles = NV40_PFB_TILE__SIZE_1;
+                pfb->num_tiles = NV40_PFB_TILE__SIZE_1;
                 break;
         default:
-                num_tiles = NV40_PFB_TILE__SIZE_0;
+                pfb->num_tiles = NV40_PFB_TILE__SIZE_0;
                 break;
         }
 
-        fb_bar_size = drm_get_resource_len(dev, 0) - 1;
-        switch (dev_priv->chipset) {
-        case 0x40:
-                for (i = 0; i < num_tiles; i++) {
-                        nv_wr32(dev, NV10_PFB_TILE(i), 0);
-                        nv_wr32(dev, NV10_PFB_TLIMIT(i), fb_bar_size);
-                }
-                break;
-        default:
-                for (i = 0; i < num_tiles; i++) {
-                        nv_wr32(dev, NV40_PFB_TILE(i), 0);
-                        nv_wr32(dev, NV40_PFB_TLIMIT(i), fb_bar_size);
-                }
-                break;
-        }
+        /* Turn all the tiling regions off. */
+        for (i = 0; i < pfb->num_tiles; i++)
+                pfb->set_region_tiling(dev, i, 0, 0, 0);
 
         return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nv40_graph.c b/drivers/gpu/drm/nouveau/nv40_graph.c
index 2b332bb55acf..53e8afe1dcd1 100644
--- a/drivers/gpu/drm/nouveau/nv40_graph.c
+++ b/drivers/gpu/drm/nouveau/nv40_graph.c
@@ -181,6 +181,48 @@ nv40_graph_unload_context(struct drm_device *dev)
         return ret;
 }
 
+void
+nv40_graph_set_region_tiling(struct drm_device *dev, int i, uint32_t addr,
+                             uint32_t size, uint32_t pitch)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        uint32_t limit = max(1u, addr + size) - 1;
+
+        if (pitch)
+                addr |= 1;
+
+        switch (dev_priv->chipset) {
+        case 0x44:
+        case 0x4a:
+        case 0x4e:
+                nv_wr32(dev, NV20_PGRAPH_TSIZE(i), pitch);
+                nv_wr32(dev, NV20_PGRAPH_TLIMIT(i), limit);
+                nv_wr32(dev, NV20_PGRAPH_TILE(i), addr);
+                break;
+
+        case 0x46:
+        case 0x47:
+        case 0x49:
+        case 0x4b:
+                nv_wr32(dev, NV47_PGRAPH_TSIZE(i), pitch);
+                nv_wr32(dev, NV47_PGRAPH_TLIMIT(i), limit);
+                nv_wr32(dev, NV47_PGRAPH_TILE(i), addr);
+                nv_wr32(dev, NV40_PGRAPH_TSIZE1(i), pitch);
+                nv_wr32(dev, NV40_PGRAPH_TLIMIT1(i), limit);
+                nv_wr32(dev, NV40_PGRAPH_TILE1(i), addr);
+                break;
+
+        default:
+                nv_wr32(dev, NV20_PGRAPH_TSIZE(i), pitch);
+                nv_wr32(dev, NV20_PGRAPH_TLIMIT(i), limit);
+                nv_wr32(dev, NV20_PGRAPH_TILE(i), addr);
+                nv_wr32(dev, NV40_PGRAPH_TSIZE1(i), pitch);
+                nv_wr32(dev, NV40_PGRAPH_TLIMIT1(i), limit);
+                nv_wr32(dev, NV40_PGRAPH_TILE1(i), addr);
+                break;
+        }
+}
+
 /*
  * G70          0x47
  * G71          0x49
@@ -195,7 +237,8 @@ nv40_graph_init(struct drm_device *dev)
 {
         struct drm_nouveau_private *dev_priv =
                 (struct drm_nouveau_private *)dev->dev_private;
-        uint32_t vramsz, tmp;
+        struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
+        uint32_t vramsz;
         int i, j;
 
         nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) &
@@ -292,74 +335,9 @@ nv40_graph_init(struct drm_device *dev)
         nv_wr32(dev, 0x400b38, 0x2ffff800);
         nv_wr32(dev, 0x400b3c, 0x00006000);
 
-        /* copy tile info from PFB */
-        switch (dev_priv->chipset) {
-        case 0x40: /* vanilla NV40 */
-                for (i = 0; i < NV10_PFB_TILE__SIZE; i++) {
-                        tmp = nv_rd32(dev, NV10_PFB_TILE(i));
-                        nv_wr32(dev, NV40_PGRAPH_TILE0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TILE1(i), tmp);
-                        tmp = nv_rd32(dev, NV10_PFB_TLIMIT(i));
-                        nv_wr32(dev, NV40_PGRAPH_TLIMIT0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TLIMIT1(i), tmp);
-                        tmp = nv_rd32(dev, NV10_PFB_TSIZE(i));
-                        nv_wr32(dev, NV40_PGRAPH_TSIZE0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TSIZE1(i), tmp);
-                        tmp = nv_rd32(dev, NV10_PFB_TSTATUS(i));
-                        nv_wr32(dev, NV40_PGRAPH_TSTATUS0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TSTATUS1(i), tmp);
-                }
-                break;
-        case 0x44:
-        case 0x4a:
-        case 0x4e: /* NV44-based cores don't have 0x406900? */
-                for (i = 0; i < NV40_PFB_TILE__SIZE_0; i++) {
-                        tmp = nv_rd32(dev, NV40_PFB_TILE(i));
-                        nv_wr32(dev, NV40_PGRAPH_TILE0(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TLIMIT(i));
-                        nv_wr32(dev, NV40_PGRAPH_TLIMIT0(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TSIZE(i));
-                        nv_wr32(dev, NV40_PGRAPH_TSIZE0(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TSTATUS(i));
-                        nv_wr32(dev, NV40_PGRAPH_TSTATUS0(i), tmp);
-                }
-                break;
-        case 0x46:
-        case 0x47:
-        case 0x49:
-        case 0x4b: /* G7X-based cores */
-                for (i = 0; i < NV40_PFB_TILE__SIZE_1; i++) {
-                        tmp = nv_rd32(dev, NV40_PFB_TILE(i));
-                        nv_wr32(dev, NV47_PGRAPH_TILE0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TILE1(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TLIMIT(i));
-                        nv_wr32(dev, NV47_PGRAPH_TLIMIT0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TLIMIT1(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TSIZE(i));
-                        nv_wr32(dev, NV47_PGRAPH_TSIZE0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TSIZE1(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TSTATUS(i));
-                        nv_wr32(dev, NV47_PGRAPH_TSTATUS0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TSTATUS1(i), tmp);
-                }
-                break;
-        default: /* everything else */
-                for (i = 0; i < NV40_PFB_TILE__SIZE_0; i++) {
-                        tmp = nv_rd32(dev, NV40_PFB_TILE(i));
-                        nv_wr32(dev, NV40_PGRAPH_TILE0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TILE1(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TLIMIT(i));
-                        nv_wr32(dev, NV40_PGRAPH_TLIMIT0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TLIMIT1(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TSIZE(i));
-                        nv_wr32(dev, NV40_PGRAPH_TSIZE0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TSIZE1(i), tmp);
-                        tmp = nv_rd32(dev, NV40_PFB_TSTATUS(i));
-                        nv_wr32(dev, NV40_PGRAPH_TSTATUS0(i), tmp);
-                        nv_wr32(dev, NV40_PGRAPH_TSTATUS1(i), tmp);
-                }
-                break;
-        }
+        /* Turn all the tiling regions off. */
+        for (i = 0; i < pfb->num_tiles; i++)
+                nv40_graph_set_region_tiling(dev, i, 0, 0, 0);
 
         /* begin RAM config */
         vramsz = drm_get_resource_len(dev, 0) - 1;