15 files changed, 745 insertions, 104 deletions

diff --git a/src/gallium/drivers/r300/Makefile b/src/gallium/drivers/r300/Makefile
index 61b54af4ddf..a6529b20604 100644
--- a/src/gallium/drivers/r300/Makefile
+++ b/src/gallium/drivers/r300/Makefile
@@ -14,6 +14,7 @@ C_SOURCES = \
 	r300_query.c \
 	r300_render.c \
 	r300_screen.c \
+	r300_screen_buffer.c \
 	r300_state.c \
 	r300_state_derived.c \
 	r300_state_invariant.c \
diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c
index ed24fb54ab1..d994a46ccfe 100644
--- a/src/gallium/drivers/r300/r300_context.c
+++ b/src/gallium/drivers/r300/r300_context.c
@@ -24,6 +24,7 @@
 
 #include "util/u_memory.h"
 #include "util/u_simple_list.h"
+#include "util/u_upload_mgr.h"
 
 #include "r300_blit.h"
 #include "r300_context.h"
@@ -55,6 +56,9 @@ static void r300_destroy_context(struct pipe_context* context)
         FREE(query);
     }
 
+    u_upload_destroy(r300->upload_vb);
+    u_upload_destroy(r300->upload_ib);
+
     FREE(r300->blend_color_state.state);
     FREE(r300->clip_state.state);
     FREE(r300->fb_state.state);
@@ -72,8 +76,7 @@ r300_is_texture_referenced(struct pipe_context *pipe,
                            struct pipe_texture *texture,
                            unsigned face, unsigned level)
 {
-    return pipe->is_buffer_referenced(pipe,
-                                      ((struct r300_texture *)texture)->buffer);
+    return 0;
 }
 
 static unsigned int
@@ -157,14 +160,14 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen,
 {
     struct r300_context* r300 = CALLOC_STRUCT(r300_context);
     struct r300_screen* r300screen = r300_screen(screen);
-    struct radeon_winsys* radeon_winsys = r300screen->radeon_winsys;
+    struct r300_winsys_screen *rws = r300screen->rws;
 
     if (!r300)
         return NULL;
 
-    r300->winsys = radeon_winsys;
+    r300->rws = rws;
 
-    r300->context.winsys = (struct pipe_winsys*)radeon_winsys;
+    r300->context.winsys = (struct pipe_winsys*)rws;
     r300->context.screen = screen;
     r300->context.priv = priv;
 
@@ -214,10 +217,29 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen,
 
     r300->invariant_state.dirty = TRUE;
 
-    r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
+    rws->set_flush_cb(r300->rws, r300_flush_cb, r300);
     r300->dirty_hw++;
 
     r300->blitter = util_blitter_create(&r300->context);
 
+    r300->upload_ib = u_upload_create(screen,
+				      32 * 1024, 16,
+				      PIPE_BUFFER_USAGE_INDEX);
+
+    if (r300->upload_ib == NULL)
+        goto no_upload_ib;
+
+    r300->upload_vb = u_upload_create(screen,
+				      128 * 1024, 16,
+				      PIPE_BUFFER_USAGE_VERTEX);
+    if (r300->upload_vb == NULL)
+        goto no_upload_vb;
+
     return &r300->context;
+
+ no_upload_ib:
+    u_upload_destroy(r300->upload_ib);
+ no_upload_vb:
+    FREE(r300);
+    return NULL;
 }
diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index 03b09603c72..db2f74e0745 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -32,6 +32,7 @@
 
 #include "r300_screen.h"
 
+struct u_upload_mgr;
 struct r300_context;
 
 struct r300_fragment_shader;
@@ -268,7 +269,7 @@ struct r300_texture {
     boolean is_npot;
 
     /* Pipe buffer backing this texture. */
-    struct pipe_buffer* buffer;
+    struct r300_winsys_buffer *buffer;
 
     /* Registers carrying texture format data. */
     struct r300_texture_format_state state;
@@ -302,7 +303,7 @@ struct r300_context {
     struct pipe_context context;
 
     /* The interface to the windowing system, etc. */
-    struct radeon_winsys* winsys;
+    struct r300_winsys_screen *rws;
     /* Draw module. Used mostly for SW TCL. */
     struct draw_context* draw;
     /* Accelerated blit support. */
@@ -368,6 +369,7 @@ struct r300_context {
     int vertex_buffer_max_index;
     /* Vertex elements for Gallium. */
     struct r300_vertex_element_state *velems;
+    bool any_user_vbs;
 
     /* Vertex info for Draw. */
     struct vertex_info vertex_info;
@@ -388,6 +390,9 @@ struct r300_context {
     uint32_t zbuffer_bpp;
     /* Whether scissor is enabled. */
     boolean scissor_enabled;
+    /* upload managers */
+    struct u_upload_mgr *upload_vb;
+    struct u_upload_mgr *upload_ib;
 };
 
 /* Convenience cast wrapper. */
diff --git a/src/gallium/drivers/r300/r300_cs.h b/src/gallium/drivers/r300/r300_cs.h
index 151f72b0fe4..ad07efbffdb 100644
--- a/src/gallium/drivers/r300/r300_cs.h
+++ b/src/gallium/drivers/r300/r300_cs.h
@@ -51,7 +51,7 @@
 
 #define CS_LOCALS(context) \
     struct r300_context* const cs_context_copy = (context); \
-    struct radeon_winsys* cs_winsys = cs_context_copy->winsys; \
+    struct r300_winsys_screen *cs_winsys = cs_context_copy->rws; \
     int cs_count = 0; (void) cs_count;
 
 #define CHECK_CS(size) \
@@ -105,22 +105,34 @@
     cs_count--; \
 } while (0)
 
-#define OUT_CS_RELOC(bo, offset, rd, wd, flags) do { \
+#define OUT_CS_BUF_RELOC(bo, offset, rd, wd, flags) do { \
     DBG(cs_context_copy, DBG_CS, "r300: writing relocation for buffer %p, offset %d, " \
             "domains (%d, %d, %d)\n", \
         bo, offset, rd, wd, flags); \
     assert(bo); \
     cs_winsys->write_cs_dword(cs_winsys, offset); \
-    cs_winsys->write_cs_reloc(cs_winsys, bo, rd, wd, flags); \
+    r300_buffer_write_reloc(cs_winsys, r300_buffer(bo), rd, wd, flags);	\
     cs_count -= 3; \
 } while (0)
 
-#define OUT_CS_RELOC_NO_OFFSET(bo, rd, wd, flags) do { \
+
+#define OUT_CS_TEX_RELOC(tex, offset, rd, wd, flags) do { \
+    DBG(cs_context_copy, DBG_CS, "r300: writing relocation for texture %p, offset %d, " \
+            "domains (%d, %d, %d)\n", \
+        tex, offset, rd, wd, flags); \
+    assert(tex); \
+    cs_winsys->write_cs_dword(cs_winsys, offset); \
+    r300_texture_write_reloc(cs_winsys, tex, rd, wd, flags);	\
+    cs_count -= 3; \
+} while (0)
+
+
+#define OUT_CS_BUF_RELOC_NO_OFFSET(bo, rd, wd, flags) do { \
     DBG(cs_context_copy, DBG_CS, "r300: writing relocation for buffer %p, " \
             "domains (%d, %d, %d)\n", \
         bo, rd, wd, flags); \
     assert(bo); \
-    cs_winsys->write_cs_reloc(cs_winsys, bo, rd, wd, flags); \
+    r300_buffer_write_reloc(cs_winsys, r300_buffer(bo), rd, wd, flags);	\
     cs_count -= 2; \
 } while (0)
 
diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index f8242625fe7..d8c64dd9001 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -32,6 +32,8 @@
 #include "r300_emit.h"
 #include "r300_fs.h"
 #include "r300_screen.h"
+#include "r300_screen_buffer.h"
+#include "r300_state_inlines.h"
 #include "r300_vs.h"
 
 void r300_emit_blend_state(struct r300_context* r300,
@@ -415,10 +417,10 @@ void r300_emit_fb_state(struct r300_context* r300, unsigned size, void* state)
         assert(tex && tex->buffer && "cbuf is marked, but NULL!");
 
         OUT_CS_REG_SEQ(R300_RB3D_COLOROFFSET0 + (4 * i), 1);
-        OUT_CS_RELOC(tex->buffer, surf->offset, 0, RADEON_GEM_DOMAIN_VRAM, 0);
+        OUT_CS_TEX_RELOC(tex, surf->offset, 0, RADEON_GEM_DOMAIN_VRAM, 0);
 
         OUT_CS_REG_SEQ(R300_RB3D_COLORPITCH0 + (4 * i), 1);
-        OUT_CS_RELOC(tex->buffer, tex->fb_state.colorpitch[surf->level],
+        OUT_CS_TEX_RELOC(tex, tex->fb_state.colorpitch[surf->level],
                      0, RADEON_GEM_DOMAIN_VRAM, 0);
 
         OUT_CS_REG(R300_US_OUT_FMT_0 + (4 * i), tex->fb_state.us_out_fmt);
@@ -434,12 +436,12 @@ void r300_emit_fb_state(struct r300_context* r300, unsigned size, void* state)
         assert(tex && tex->buffer && "zsbuf is marked, but NULL!");
 
         OUT_CS_REG_SEQ(R300_ZB_DEPTHOFFSET, 1);
-        OUT_CS_RELOC(tex->buffer, surf->offset, 0, RADEON_GEM_DOMAIN_VRAM, 0);
+        OUT_CS_TEX_RELOC(tex, surf->offset, 0, RADEON_GEM_DOMAIN_VRAM, 0);
 
         OUT_CS_REG(R300_ZB_FORMAT, tex->fb_state.zb_format);
 
         OUT_CS_REG_SEQ(R300_ZB_DEPTHPITCH, 1);
-        OUT_CS_RELOC(tex->buffer, tex->fb_state.depthpitch[surf->level],
+        OUT_CS_TEX_RELOC(tex, tex->fb_state.depthpitch[surf->level],
                      0, RADEON_GEM_DOMAIN_VRAM, 0);
     }
 
@@ -491,13 +493,13 @@ static void r300_emit_query_finish(struct r300_context *r300,
             /* pipe 3 only */
             OUT_CS_REG(R300_SU_REG_DEST, 1 << 3);
             OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
-            OUT_CS_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 3),
+            OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 3),
                     0, RADEON_GEM_DOMAIN_GTT, 0);
         case 3:
             /* pipe 2 only */
             OUT_CS_REG(R300_SU_REG_DEST, 1 << 2);
             OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
-            OUT_CS_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 2),
+            OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 2),
                     0, RADEON_GEM_DOMAIN_GTT, 0);
         case 2:
             /* pipe 1 only */
@@ -505,13 +507,13 @@ static void r300_emit_query_finish(struct r300_context *r300,
             OUT_CS_REG(R300_SU_REG_DEST,
                     1 << (caps->high_second_pipe ? 3 : 1));
             OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
-            OUT_CS_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 1),
+            OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 1),
                     0, RADEON_GEM_DOMAIN_GTT, 0);
         case 1:
             /* pipe 0 only */
             OUT_CS_REG(R300_SU_REG_DEST, 1 << 0);
             OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
-            OUT_CS_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 0),
+            OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 0),
                     0, RADEON_GEM_DOMAIN_GTT, 0);
             break;
         default:
@@ -533,7 +535,7 @@ static void rv530_emit_query_single(struct r300_context *r300,
     BEGIN_CS(8);
     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
     OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
-    OUT_CS_RELOC(r300->oqbo, query->offset, 0, RADEON_GEM_DOMAIN_GTT, 0);
+    OUT_CS_BUF_RELOC(r300->oqbo, query->offset, 0, RADEON_GEM_DOMAIN_GTT, 0);
     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
     END_CS;
 }
@@ -546,10 +548,10 @@ static void rv530_emit_query_double(struct r300_context *r300,
     BEGIN_CS(14);
     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
     OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
-    OUT_CS_RELOC(r300->oqbo, query->offset, 0, RADEON_GEM_DOMAIN_GTT, 0);
+    OUT_CS_BUF_RELOC(r300->oqbo, query->offset, 0, RADEON_GEM_DOMAIN_GTT, 0);
     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_1);
     OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
-    OUT_CS_RELOC(r300->oqbo, query->offset + sizeof(uint32_t), 0, RADEON_GEM_DOMAIN_GTT, 0);
+    OUT_CS_BUF_RELOC(r300->oqbo, query->offset + sizeof(uint32_t), 0, RADEON_GEM_DOMAIN_GTT, 0);
     OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
     END_CS;
 }
@@ -747,7 +749,7 @@ void r300_emit_textures_state(struct r300_context *r300,
             OUT_CS_REG(R300_TX_FORMAT2_0 + (i * 4), texstate->format[2]);
 
             OUT_CS_REG_SEQ(R300_TX_OFFSET_0 + (i * 4), 1);
-            OUT_CS_RELOC(allstate->textures[i]->buffer, texstate->tile_config,
+            OUT_CS_TEX_RELOC(allstate->textures[i], texstate->tile_config,
                          RADEON_GEM_DOMAIN_GTT | RADEON_GEM_DOMAIN_VRAM, 0, 0);
         }
     }
@@ -788,8 +790,8 @@ void r300_emit_aos(struct r300_context* r300, unsigned offset)
     }
 
     for (i = 0; i < aos_count; i++) {
-        OUT_CS_RELOC_NO_OFFSET(vbuf[velem[i].vertex_buffer_index].buffer,
-                               RADEON_GEM_DOMAIN_GTT, 0, 0);
+        OUT_CS_BUF_RELOC_NO_OFFSET(vbuf[velem[i].vertex_buffer_index].buffer,
+				   RADEON_GEM_DOMAIN_GTT, 0, 0);
     }
     END_CS;
 }
@@ -814,7 +816,7 @@ void r300_emit_vertex_buffer(struct r300_context* r300)
     OUT_CS(r300->vertex_info.size |
             (r300->vertex_info.size << 8));
     OUT_CS(r300->vbo_offset);
-    OUT_CS_RELOC(r300->vbo, 0, RADEON_GEM_DOMAIN_GTT, 0, 0);
+    OUT_CS_BUF_RELOC(r300->vbo, 0, RADEON_GEM_DOMAIN_GTT, 0, 0);
     END_CS;
 }
 
@@ -1009,16 +1011,22 @@ void r300_emit_buffer_validate(struct r300_context *r300,
     unsigned i;
     boolean invalid = FALSE;
 
+    /* upload buffers first */
+    if (r300->any_user_vbs) {
+        r300_upload_user_buffers(r300);
+        r300->any_user_vbs = false;
+    }
+
     /* Clean out BOs. */
-    r300->winsys->reset_bos(r300->winsys);
+    r300->rws->reset_bos(r300->rws);
 
 validate:
     /* Color buffers... */
     for (i = 0; i < fb->nr_cbufs; i++) {
         tex = (struct r300_texture*)fb->cbufs[i]->texture;
         assert(tex && tex->buffer && "cbuf is marked, but NULL!");
-        if (!r300->winsys->add_buffer(r300->winsys, tex->buffer,
-                    0, RADEON_GEM_DOMAIN_VRAM)) {
+        if (!r300_add_texture(r300->rws, tex,
+			      0, RADEON_GEM_DOMAIN_VRAM)) {
             r300->context.flush(&r300->context, 0, NULL);
             goto validate;
         }
@@ -1027,8 +1035,8 @@ validate:
     if (fb->zsbuf) {
         tex = (struct r300_texture*)fb->zsbuf->texture;
         assert(tex && tex->buffer && "zsbuf is marked, but NULL!");
-        if (!r300->winsys->add_buffer(r300->winsys, tex->buffer,
-                    0, RADEON_GEM_DOMAIN_VRAM)) {
+        if (!r300_add_texture(r300->rws, tex,
+			      0, RADEON_GEM_DOMAIN_VRAM)) {
             r300->context.flush(&r300->context, 0, NULL);
             goto validate;
         }
@@ -1038,24 +1046,24 @@ validate:
         tex = texstate->textures[i];
         if (!tex || !texstate->sampler_states[i])
             continue;
-        if (!r300->winsys->add_buffer(r300->winsys, tex->buffer,
-                    RADEON_GEM_DOMAIN_GTT | RADEON_GEM_DOMAIN_VRAM, 0)) {
+        if (!r300_add_texture(r300->rws, tex,
+			      RADEON_GEM_DOMAIN_GTT | RADEON_GEM_DOMAIN_VRAM, 0)) {
             r300->context.flush(&r300->context, 0, NULL);
             goto validate;
         }
     }
     /* ...occlusion query buffer... */
     if (r300->dirty_state & R300_NEW_QUERY) {
-        if (!r300->winsys->add_buffer(r300->winsys, r300->oqbo,
-                    0, RADEON_GEM_DOMAIN_GTT)) {
+        if (!r300_add_buffer(r300->rws, r300->oqbo,
+			     0, RADEON_GEM_DOMAIN_GTT)) {
             r300->context.flush(&r300->context, 0, NULL);
             goto validate;
         }
     }
     /* ...vertex buffer for SWTCL path... */
     if (r300->vbo) {
-        if (!r300->winsys->add_buffer(r300->winsys, r300->vbo,
-                    RADEON_GEM_DOMAIN_GTT, 0)) {
+        if (!r300_add_buffer(r300->rws, r300->vbo,
+			     RADEON_GEM_DOMAIN_GTT, 0)) {
             r300->context.flush(&r300->context, 0, NULL);
             goto validate;
         }
@@ -1065,23 +1073,22 @@ validate:
         for (i = 0; i < r300->velems->count; i++) {
             pbuf = vbuf[velem[i].vertex_buffer_index].buffer;
 
-            if (!r300->winsys->add_buffer(r300->winsys, pbuf,
-                                          RADEON_GEM_DOMAIN_GTT, 0)) {
-                r300->context.flush(&r300->context, 0, NULL);
+            if (!r300_add_buffer(r300->rws, pbuf,
+				 RADEON_GEM_DOMAIN_GTT, 0)) {
+		r300->context.flush(&r300->context, 0, NULL);
                 goto validate;
             }
         }
     }
     /* ...and index buffer for HWTCL path. */
     if (index_buffer) {
-        if (!r300->winsys->add_buffer(r300->winsys, index_buffer,
-                                      RADEON_GEM_DOMAIN_GTT, 0)) {
+        if (!r300_add_buffer(r300->rws, index_buffer,
+			     RADEON_GEM_DOMAIN_GTT, 0)) {
             r300->context.flush(&r300->context, 0, NULL);
             goto validate;
         }
     }
-
-    if (!r300->winsys->validate(r300->winsys)) {
+    if (!r300->rws->validate(r300->rws)) {
         r300->context.flush(&r300->context, 0, NULL);
         if (invalid) {
             /* Well, hell. */
diff --git a/src/gallium/drivers/r300/r300_render.c b/src/gallium/drivers/r300/r300_render.c
index 971e7f35212..47100c83b0b 100644
--- a/src/gallium/drivers/r300/r300_render.c
+++ b/src/gallium/drivers/r300/r300_render.c
@@ -30,10 +30,12 @@
 
 #include "util/u_format.h"
 #include "util/u_memory.h"
+#include "util/u_upload_mgr.h"
 #include "util/u_prim.h"
 
 #include "r300_cs.h"
 #include "r300_context.h"
+#include "r300_screen_buffer.h"
 #include "r300_emit.h"
 #include "r300_reg.h"
 #include "r300_render.h"
@@ -123,7 +125,7 @@ static uint32_t r300_provoking_vertex_fixes(struct r300_context *r300,
 static boolean r300_reserve_cs_space(struct r300_context *r300,
                                      unsigned dwords)
 {
-    if (!r300->winsys->check_cs(r300->winsys, dwords)) {
+    if (!r300->rws->check_cs(r300->rws, dwords)) {
         r300->context.flush(&r300->context, 0, NULL);
         return TRUE;
     }
@@ -153,15 +155,14 @@ static boolean immd_is_good_idea(struct r300_context *r300,
         if (!checked[vbi]) {
             vbuf = &r300->vertex_buffer[vbi];
 
-            if (r300->winsys->is_buffer_referenced(r300->winsys,
-                                                   vbuf->buffer)) {
+            if (r300_buffer_is_referenced(r300,
+					  vbuf->buffer)) {
                 /* It's a very bad idea to map it... */
                 return FALSE;
             }
             checked[vbi] = TRUE;
         }
     }
-
     return TRUE;
 }
 
@@ -345,8 +346,8 @@ static void r300_emit_draw_elements(struct r300_context *r300,
     OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2) |
            (0 << R300_INDX_BUFFER_SKIP_SHIFT));
     OUT_CS(offset_dwords << 2);
-    OUT_CS_RELOC(indexBuffer, count_dwords,
-        RADEON_GEM_DOMAIN_GTT, 0, 0);
+    OUT_CS_BUF_RELOC(indexBuffer, count_dwords,
+		     RADEON_GEM_DOMAIN_GTT, 0, 0);
 
     END_CS;
 }
@@ -413,12 +414,16 @@ void r300_draw_range_elements(struct pipe_context* pipe,
 
     r300_update_derived_state(r300);
 
+    r300_upload_index_buffer(r300, &indexBuffer, indexSize, start, count);
+
     /* 128 dwords for emit_aos and emit_draw_elements */
     r300_reserve_cs_space(r300, r300_get_num_dirty_dwords(r300) + 128);
     r300_emit_buffer_validate(r300, TRUE, indexBuffer);
     r300_emit_dirty_state(r300);
     r300_emit_aos(r300, 0);
 
+    u_upload_flush(r300->upload_vb);
+    u_upload_flush(r300->upload_ib);
     if (alt_num_verts || count <= 65535) {
         r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex,
                                 maxIndex, mode, start, count);
@@ -441,7 +446,7 @@ void r300_draw_range_elements(struct pipe_context* pipe,
     }
 
     if (indexBuffer != orgIndexBuffer) {
-        pipe->screen->buffer_destroy(indexBuffer);
+        pipe_buffer_reference( &indexBuffer, NULL );
     }
 }
 
@@ -505,6 +510,7 @@ void r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
                 }
             } while (count);
         }
+	u_upload_flush(r300->upload_vb);
     }
 }
 
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index b6282fccd7a..3e31688f8e8 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -23,13 +23,14 @@
 
 #include "util/u_format.h"
 #include "util/u_memory.h"
-#include "util/u_simple_screen.h"
 
 #include "r300_context.h"
 #include "r300_texture.h"
 
 #include "radeon_winsys.h"
 
+#include "r300_screen_buffer.h"
+
 /* Return the identifier behind whom the brave coders responsible for this
  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  *
@@ -253,15 +254,19 @@ static boolean r300_is_format_supported(struct pipe_screen* screen,
 static void r300_destroy_screen(struct pipe_screen* pscreen)
 {
     struct r300_screen* r300screen = r300_screen(pscreen);
+    struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
+
+    if (rws)
+      rws->destroy(rws);
 
     FREE(r300screen->caps);
     FREE(r300screen);
 }
 
-struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
+struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
 {
-    struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
-    struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
+    struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
+    struct r300_capabilities *caps = CALLOC_STRUCT(r300_capabilities);
 
     if (!r300screen || !caps) {
         FREE(r300screen);
@@ -269,16 +274,16 @@ struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
         return NULL;
     }
 
-    caps->pci_id = radeon_winsys->pci_id;
-    caps->num_frag_pipes = radeon_winsys->gb_pipes;
-    caps->num_z_pipes = radeon_winsys->z_pipes;
+    caps->pci_id = rws->get_value(rws, R300_VID_PCI_ID);
+    caps->num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
+    caps->num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 
     r300_init_debug(r300screen);
     r300_parse_chipset(caps);
 
     r300screen->caps = caps;
-    r300screen->radeon_winsys = radeon_winsys;
-    r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
+    r300screen->rws = rws;
+    r300screen->screen.winsys = (struct pipe_winsys*)rws;
     r300screen->screen.destroy = r300_destroy_screen;
     r300screen->screen.get_name = r300_get_name;
     r300screen->screen.get_vendor = r300_get_vendor;
@@ -288,8 +293,13 @@ struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
     r300screen->screen.context_create = r300_create_context;
 
     r300_init_screen_texture_functions(&r300screen->screen);
-    u_simple_screen_init(&r300screen->screen);
 
+    r300_screen_init_buffer_functions(r300screen);
     return &r300screen->screen;
 }
 
+struct r300_winsys_screen *
+r300_winsys_screen(struct pipe_screen *screen)
+{
+    return r300_screen(screen)->rws;
+}
diff --git a/src/gallium/drivers/r300/r300_screen.h b/src/gallium/drivers/r300/r300_screen.h
index abc1303e126..1ccc0bfb7a5 100644
--- a/src/gallium/drivers/r300/r300_screen.h
+++ b/src/gallium/drivers/r300/r300_screen.h
@@ -36,7 +36,7 @@ struct r300_screen {
     /* Parent class */
     struct pipe_screen screen;
 
-    struct radeon_winsys* radeon_winsys;
+    struct r300_winsys_screen *rws;
 
     /* Chipset capabilities */
     struct r300_capabilities* caps;
@@ -51,9 +51,6 @@ static INLINE struct r300_screen* r300_screen(struct pipe_screen* screen) {
     return (struct r300_screen*)screen;
 }
 
-/* Creates a new r300 screen. */
-struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys);
-
 /* Debug functionality. */
 
 /**
diff --git a/src/gallium/drivers/r300/r300_screen_buffer.c b/src/gallium/drivers/r300/r300_screen_buffer.c
new file mode 100644
index 00000000000..b97d0d76a4a
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_screen_buffer.c
@@ -0,0 +1,314 @@
+/*
+ * Copyright 2010 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Dave Airlie
+ */
+#include <stdio.h>
+
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_memory.h"
+#include "util/u_upload_mgr.h"
+#include "util/u_math.h"
+
+#include "r300_screen_buffer.h"
+
+#include "r300_winsys.h"
+
+boolean r300_buffer_is_referenced(struct r300_context *r300,
+				  struct pipe_buffer *buf)
+{
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    if (r300_buffer_is_user_buffer(buf))
+	return FALSE;
+
+    return r300->rws->is_buffer_referenced(r300->rws, rbuf->buf);
+    
+}
+int r300_upload_index_buffer(struct r300_context *r300,
+			     struct pipe_buffer **index_buffer,
+			     unsigned index_size,
+			     unsigned start,
+			     unsigned count)
+{
+   struct pipe_buffer *upload_buffer = NULL;
+   unsigned index_offset = start * index_size;
+   int ret = 0;
+
+    if (r300_buffer_is_user_buffer(*index_buffer)) {
+	ret = u_upload_buffer(r300->upload_ib,
+			      index_offset,
+			      count * index_size,
+			      *index_buffer,
+			      &index_offset,
+			      &upload_buffer);
+	if (ret) {
+	    goto done;
+	}
+	*index_buffer = upload_buffer;
+    }
+ done:
+    //    if (upload_buffer)
+    //	pipe_buffer_reference(&upload_buffer, NULL);
+    return ret;
+}
+
+int r300_upload_user_buffers(struct r300_context *r300)
+{
+    enum pipe_error ret = PIPE_OK;
+    int i, nr;
+
+    nr = r300->vertex_buffer_count;
+
+    for (i = 0; i < nr; i++) {
+
+	if (r300_buffer_is_user_buffer(r300->vertex_buffer[i].buffer)) {
+	    struct pipe_buffer *upload_buffer = NULL;
+	    unsigned offset = 0; /*r300->vertex_buffer[i].buffer_offset * 4;*/
+	    unsigned size = r300->vertex_buffer[i].buffer->size;
+	    unsigned upload_offset;
+	    ret = u_upload_buffer(r300->upload_vb,
+				  offset, size,
+				  r300->vertex_buffer[i].buffer,
+				  &upload_offset, &upload_buffer);
+	    if (ret)
+		return ret;
+
+	    pipe_buffer_reference(&r300->vertex_buffer[i].buffer, NULL);
+	    r300->vertex_buffer[i].buffer = upload_buffer;
+	    r300->vertex_buffer[i].buffer_offset = upload_offset;
+	}
+    }
+    return ret;
+}
+
+static struct r300_winsys_buffer *
+r300_winsys_buffer_create(struct r300_screen *r300screen,
+			  unsigned alignment,
+			  unsigned usage,
+			  unsigned size)
+{
+    struct r300_winsys_screen *rws = r300screen->rws;
+    struct r300_winsys_buffer *buf;
+
+    buf = rws->buffer_create(rws, alignment, usage, size);
+    return buf;
+}
+
+static void r300_winsys_buffer_destroy(struct r300_screen *r300screen,
+				       struct r300_buffer *rbuf)
+{
+    struct r300_winsys_screen *rws = r300screen->rws;
+
+    if (rbuf->buf) {
+	rws->buffer_reference(rws, &rbuf->buf, NULL);
+	rbuf->buf = NULL;
+    }
+}
+
+static struct pipe_buffer *r300_buffer_create(struct pipe_screen *screen,
+					      unsigned alignment,
+					      unsigned usage,
+					      unsigned size)
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_buffer *rbuf;
+
+    rbuf = CALLOC_STRUCT(r300_buffer);
+    if (!rbuf)
+	goto error1;
+
+    rbuf->magic = R300_BUFFER_MAGIC;
+
+    pipe_reference_init(&rbuf->base.reference, 1);
+    rbuf->base.screen = screen;
+    rbuf->base.alignment = alignment;
+    rbuf->base.usage = usage;
+    rbuf->base.size = size;
+
+    rbuf->buf = r300_winsys_buffer_create(r300screen,
+					  alignment,
+					  usage,
+					  size);
+
+    if (!rbuf->buf)
+	goto error2;
+
+    return &rbuf->base;
+error2:
+    FREE(rbuf);
+error1:
+    return NULL;
+}
+
+
+static struct pipe_buffer *r300_user_buffer_create(struct pipe_screen *screen,
+						   void *ptr,
+						   unsigned bytes)
+{
+    struct r300_buffer *rbuf;
+
+    rbuf = CALLOC_STRUCT(r300_buffer);
+    if (!rbuf)
+	goto no_rbuf;
+
+    rbuf->magic = R300_BUFFER_MAGIC;
+
+    pipe_reference_init(&rbuf->base.reference, 1);
+    rbuf->base.screen = screen;
+    rbuf->base.alignment = 1;
+    rbuf->base.usage = 0;
+    rbuf->base.size = bytes;
+
+    rbuf->user_buffer = ptr;
+    return &rbuf->base;
+
+no_rbuf:
+    return NULL;
+}
+
+static void r300_buffer_destroy(struct pipe_buffer *buf)
+{
+    struct r300_screen *r300screen = r300_screen(buf->screen);
+    struct r300_buffer *rbuf = r300_buffer(buf);
+
+    r300_winsys_buffer_destroy(r300screen, rbuf);
+    FREE(rbuf);
+}
+
+static void *
+r300_buffer_map_range(struct pipe_screen *screen,
+		      struct pipe_buffer *buf,
+		      unsigned offset, unsigned length,
+		      unsigned usage )
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_winsys_screen *rws = r300screen->rws;
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    void *map;
+    int flush = 0;
+    int i;
+
+    if (rbuf->user_buffer)
+	return rbuf->user_buffer;
+
+    if (rbuf->base.usage & PIPE_BUFFER_USAGE_CONSTANT)
+	goto just_map;
+
+    /* check if the mapping is to a range we already flushed */
+    if (usage & PIPE_BUFFER_USAGE_DISCARD) {
+	for (i = 0; i < rbuf->num_ranges; i++) {
+
+	    if ((offset >= rbuf->ranges[i].start) &&
+		(offset < rbuf->ranges[i].end))
+		flush = 1;
+	    
+	    if (flush) {
+		/* unreference this hw buffer and allocate a new one */
+		rws->buffer_reference(rws, &rbuf->buf, NULL);
+
+		rbuf->num_ranges = 0;
+		rbuf->map = NULL;
+		rbuf->buf = r300_winsys_buffer_create(r300screen,
+						      rbuf->base.alignment,
+						      rbuf->base.usage,
+						      rbuf->base.size);
+		break;
+	    }
+	}
+    }
+just_map:
+    map = rws->buffer_map(rws, rbuf->buf, usage | R300_USAGE_FLAG_DONT_SYNC);
+   
+    return map;
+}
+
+static void 
+r300_buffer_flush_mapped_range( struct pipe_screen *screen,
+				struct pipe_buffer *buf,
+				unsigned offset,
+				unsigned length )
+{
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    int i;
+
+    if (rbuf->user_buffer)
+	return;
+
+    if (rbuf->base.usage & PIPE_BUFFER_USAGE_CONSTANT)
+	return;
+
+    /* mark the range as used */
+    for(i = 0; i < rbuf->num_ranges; ++i) {
+	if(offset <= rbuf->ranges[i].end && rbuf->ranges[i].start <= (offset+length)) {
+	    rbuf->ranges[i].start = MIN2(rbuf->ranges[i].start, offset);
+	    rbuf->ranges[i].end   = MAX2(rbuf->ranges[i].end, (offset+length));
+	    return;
+	}
+    }
+
+    rbuf->ranges[rbuf->num_ranges].start = offset;
+    rbuf->ranges[rbuf->num_ranges].end = offset+length;
+    rbuf->num_ranges++;
+}
+
+static void *
+r300_buffer_map(struct pipe_screen *screen,
+		struct pipe_buffer *buf,
+		unsigned usage)
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_winsys_screen *rws = r300screen->rws;
+    struct r300_buffer *rbuf = r300_buffer(buf);
+    void *map;
+
+   if (rbuf->user_buffer)
+      return rbuf->user_buffer;
+
+    map = rws->buffer_map(rws, rbuf->buf, usage);
+
+    return map;
+}
+
+static void
+r300_buffer_unmap(struct pipe_screen *screen,
+		  struct pipe_buffer *buf)
+{
+    struct r300_screen *r300screen = r300_screen(screen);
+    struct r300_winsys_screen *rws = r300screen->rws;
+    struct r300_buffer *rbuf = r300_buffer(buf);
+
+    if (rbuf->buf) {
+        rws->buffer_unmap(rws, rbuf->buf);
+    }
+}
+
+void r300_screen_init_buffer_functions(struct r300_screen *r300screen)
+{
+    r300screen->screen.buffer_create = r300_buffer_create;
+    r300screen->screen.user_buffer_create = r300_user_buffer_create;
+    r300screen->screen.buffer_map = r300_buffer_map;
+    r300screen->screen.buffer_map_range = r300_buffer_map_range;
+    r300screen->screen.buffer_flush_mapped_range = r300_buffer_flush_mapped_range;
+    r300screen->screen.buffer_unmap = r300_buffer_unmap;
+    r300screen->screen.buffer_destroy = r300_buffer_destroy;
+}
diff --git a/src/gallium/drivers/r300/r300_screen_buffer.h b/src/gallium/drivers/r300/r300_screen_buffer.h
new file mode 100644
index 00000000000..0cf349c25cd
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_screen_buffer.h
@@ -0,0 +1,99 @@
+#ifndef R300_SCREEN_BUFFER_H
+#define R300_SCREEN_BUFFER_H
+#include <stdio.h>
+#include "pipe/p_compiler.h"
+#include "pipe/p_state.h"
+#include "r300_screen.h"
+
+#include "r300_winsys.h"
+#include "r300_context.h"
+
+#define R300_BUFFER_MAGIC 0xabcd1234
+
+struct r300_buffer_range {
+    uint32_t start;
+    uint32_t end;
+};
+#define R300_BUFFER_MAX_RANGES 32
+
+struct r300_buffer
+{
+    struct pipe_buffer base;
+
+    uint32_t magic;
+
+    struct r300_winsys_buffer *buf;
+
+    void *user_buffer;
+    struct r300_buffer_range ranges[R300_BUFFER_MAX_RANGES];
+    unsigned num_ranges;
+
+    void *map;
+};
+
+static INLINE struct r300_buffer *
+r300_buffer(struct pipe_buffer *buffer)
+{
+    if (buffer) {
+	assert(((struct r300_buffer *)buffer)->magic == R300_BUFFER_MAGIC);
+	return (struct r300_buffer *)buffer;
+    }
+    return NULL;
+}
+
+static INLINE boolean 
+r300_buffer_is_user_buffer(struct pipe_buffer *buffer)
+{
+    return r300_buffer(buffer)->user_buffer ? true : false;
+}
+
+static INLINE boolean r300_add_buffer(struct r300_winsys_screen *rws,
+				      struct pipe_buffer *buffer,
+				      int rd, int wr)
+{
+    struct r300_buffer *buf = r300_buffer(buffer);
+
+    if (!buf->buf)
+	return true;
+
+    return rws->add_buffer(rws, buf->buf, rd, wr);
+}
+
+
+static INLINE boolean r300_add_texture(struct r300_winsys_screen *rws,
+				       struct r300_texture *tex,
+				       int rd, int wr)
+{
+    return rws->add_buffer(rws, tex->buffer, rd, wr);
+}
+
+void r300_screen_init_buffer_functions(struct r300_screen *r300screen);
+
+static INLINE void r300_buffer_write_reloc(struct r300_winsys_screen *rws,
+				      struct r300_buffer *buf,
+				      uint32_t rd, uint32_t wd, uint32_t flags)
+{
+    if (!buf->buf)
+	return;
+
+    rws->write_cs_reloc(rws, buf->buf, rd, wd, flags);
+}
+
+static INLINE void r300_texture_write_reloc(struct r300_winsys_screen *rws,
+					    struct r300_texture *texture,
+					    uint32_t rd, uint32_t wd, uint32_t flags)
+{
+    rws->write_cs_reloc(rws, texture->buffer, rd, wd, flags);
+}
+
+int r300_upload_user_buffers(struct r300_context *r300);
+
+int r300_upload_index_buffer(struct r300_context *r300,
+			     struct pipe_buffer **index_buffer,
+			     unsigned index_size,
+			     unsigned start,
+			     unsigned count);
+
+boolean r300_buffer_is_referenced(struct r300_context *r300,
+				  struct pipe_buffer *buf);
+#endif
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 3098145dfbe..712e9280e3c 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -34,6 +34,7 @@
 #include "r300_context.h"
 #include "r300_reg.h"
 #include "r300_screen.h"
+#include "r300_screen_buffer.h"
 #include "r300_state_inlines.h"
 #include "r300_fs.h"
 #include "r300_vs.h"
@@ -525,7 +526,7 @@ static void r300_fb_update_tiling_flags(struct r300_context *r300,
         tex = (struct r300_texture*)old_state->cbufs[i]->texture;
 
         if (tex) {
-            r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
+            r300->rws->buffer_set_tiling(r300->rws, tex->buffer,
                                             tex->pitch[0],
                                             tex->microtile != 0,
                                             tex->macrotile != 0);
@@ -537,7 +538,7 @@ static void r300_fb_update_tiling_flags(struct r300_context *r300,
         tex = (struct r300_texture*)old_state->zsbuf->texture;
 
         if (tex) {
-            r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
+            r300->rws->buffer_set_tiling(r300->rws, tex->buffer,
                                             tex->pitch[0],
                                             tex->microtile != 0,
                                             tex->macrotile != 0);
@@ -549,7 +550,7 @@ static void r300_fb_update_tiling_flags(struct r300_context *r300,
         tex = (struct r300_texture*)new_state->cbufs[i]->texture;
         level = new_state->cbufs[i]->level;
 
-        r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
+        r300->rws->buffer_set_tiling(r300->rws, tex->buffer,
                                         tex->pitch[level],
                                         tex->microtile != 0,
                                         tex->mip_macrotile[level] != 0);
@@ -558,7 +559,7 @@ static void r300_fb_update_tiling_flags(struct r300_context *r300,
         tex = (struct r300_texture*)new_state->zsbuf->texture;
         level = new_state->zsbuf->level;
 
-        r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
+        r300->rws->buffer_set_tiling(r300->rws, tex->buffer,
                                         tex->pitch[level],
                                         tex->microtile != 0,
                                         tex->mip_macrotile[level] != 0);
@@ -1040,17 +1041,30 @@ static void r300_set_vertex_buffers(struct pipe_context* pipe,
                                     const struct pipe_vertex_buffer* buffers)
 {
     struct r300_context* r300 = r300_context(pipe);
-    unsigned i, max_index = (1 << 24) - 1;
+    int i;
+    unsigned max_index = (1 << 24) - 1;
+    boolean any_user_buffer = false;
 
-    memcpy(r300->vertex_buffer, buffers,
-        sizeof(struct pipe_vertex_buffer) * count);
+    if (count == r300->vertex_buffer_count &&
+	memcmp(r300->vertex_buffer, buffers, count * sizeof(buffers[0])) == 0)
+        return;
 
     for (i = 0; i < count; i++) {
+	pipe_buffer_reference(&r300->vertex_buffer[i].buffer, buffers[i].buffer);
+	if (r300_buffer_is_user_buffer(buffers[i].buffer))
+	    any_user_buffer = true;
         max_index = MIN2(buffers[i].max_index, max_index);
     }
 
+    for ( ; i < r300->vertex_buffer_count; i++)
+	pipe_buffer_reference(&r300->vertex_buffer[i].buffer, NULL);
+
+    memcpy(r300->vertex_buffer, buffers,
+	   sizeof(struct pipe_vertex_buffer) * count);
+
     r300->vertex_buffer_count = count;
     r300->vertex_buffer_max_index = max_index;
+    r300->any_user_vbs = any_user_buffer;
 
     if (r300->draw) {
         draw_flush(r300->draw);
diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c
index 04124afd4dc..7c7656068bb 100644
--- a/src/gallium/drivers/r300/r300_texture.c
+++ b/src/gallium/drivers/r300/r300_texture.c
@@ -773,7 +773,7 @@ static struct pipe_texture* r300_texture_create(struct pipe_screen* screen,
 {
     struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
     struct r300_screen* rscreen = r300_screen(screen);
-    struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
 
     if (!tex) {
         return NULL;
@@ -790,13 +790,13 @@ static struct pipe_texture* r300_texture_create(struct pipe_screen* screen,
     r300_setup_miptree(rscreen, tex);
     r300_setup_texture_state(rscreen, tex);
 
-    tex->buffer = screen->buffer_create(screen, 2048,
-                                        PIPE_BUFFER_USAGE_PIXEL,
-                                        tex->size);
-    winsys->buffer_set_tiling(winsys, tex->buffer,
-                              tex->pitch[0],
-                              tex->microtile != R300_BUFFER_LINEAR,
-                              tex->macrotile != R300_BUFFER_LINEAR);
+    tex->buffer = rws->buffer_create(rws, 2048,
+				     PIPE_BUFFER_USAGE_PIXEL,
+				     tex->size);
+    rws->buffer_set_tiling(rws, tex->buffer,
+			   tex->pitch[0],
+			   tex->microtile != R300_BUFFER_LINEAR,
+			   tex->macrotile != R300_BUFFER_LINEAR);
 
     if (!tex->buffer) {
         FREE(tex);
@@ -809,9 +809,9 @@ static struct pipe_texture* r300_texture_create(struct pipe_screen* screen,
 static void r300_texture_destroy(struct pipe_texture* texture)
 {
     struct r300_texture* tex = (struct r300_texture*)texture;
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)texture->screen->winsys;
 
-    pipe_buffer_reference(&tex->buffer, NULL);
-
+    rws->buffer_reference(rws, &tex->buffer, NULL);
     FREE(tex);
 }
 
@@ -857,9 +857,9 @@ static struct pipe_texture*
                              const struct pipe_texture* base,
                              struct winsys_handle *whandle)
 {
-    struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen*)screen->winsys;
     struct r300_screen* rscreen = r300_screen(screen);
-    struct pipe_buffer *buffer;
+    struct r300_winsys_buffer *buffer;
     struct r300_texture* tex;
     unsigned stride;
 
@@ -870,7 +870,7 @@ static struct pipe_texture*
         return NULL;
     }
 
-    buffer = winsys->buffer_from_handle(winsys, screen, whandle, &stride);
+    buffer = rws->buffer_from_handle(rws, screen, whandle, &stride);
     if (!buffer) {
         return NULL;
     }
@@ -901,7 +901,7 @@ static boolean
                             struct pipe_texture *texture,
                             struct winsys_handle *whandle)
 {
-    struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
     struct r300_texture* tex = (struct r300_texture*)texture;
     unsigned stride;
 
@@ -911,7 +911,7 @@ static boolean
 
     stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
 
-    winsys->buffer_get_handle(winsys, tex->buffer, stride, whandle);
+    rws->buffer_get_handle(rws, tex->buffer, stride, whandle);
 
     return TRUE;
 }
@@ -977,3 +977,25 @@ void r300_init_screen_texture_functions(struct pipe_screen* screen)
     screen->video_surface_destroy= r300_video_surface_destroy;
 }
 
+boolean r300_get_texture_buffer(struct pipe_screen* screen,
+                                struct pipe_texture* texture,
+                                struct r300_winsys_buffer** buffer,
+                                unsigned* stride)
+{
+    struct r300_texture* tex = (struct r300_texture*)texture;
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)screen->winsys;
+    struct r300_winsys_buffer *buf;
+
+    if (!tex) {
+        return FALSE;
+    }
+
+    rws->buffer_reference(rws, &buf, tex->buffer);
+
+    if (stride) {
+        *stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
+    }
+
+    *buffer = buf;
+    return TRUE;
+}
diff --git a/src/gallium/drivers/r300/r300_texture.h b/src/gallium/drivers/r300/r300_texture.h
index 138b62784e6..60c7fa83420 100644
--- a/src/gallium/drivers/r300/r300_texture.h
+++ b/src/gallium/drivers/r300/r300_texture.h
@@ -63,8 +63,8 @@ r300_video_surface(struct pipe_video_surface *pvs)
 /* Used internally for texture_is_referenced()
  */
 boolean r300_get_texture_buffer(struct pipe_screen* screen,
-                                struct pipe_texture* texture,
-                                struct pipe_buffer** buffer,
+                                struct pipe_texture *texture,
+                                struct r300_winsys_buffer** buffer,
                                 unsigned* stride);
 
 #endif /* R300_TEXTURE_H */
diff --git a/src/gallium/drivers/r300/r300_transfer.c b/src/gallium/drivers/r300/r300_transfer.c
index 495e3dee767..987a040698f 100644
--- a/src/gallium/drivers/r300/r300_transfer.c
+++ b/src/gallium/drivers/r300/r300_transfer.c
@@ -26,6 +26,8 @@
 #include "r300_texture.h"
 #include "r300_screen.h"
 
+#include "r300_winsys.h"
+
 #include "util/u_memory.h"
 #include "util/u_format.h"
 
@@ -225,6 +227,7 @@ static void r300_tex_transfer_destroy(struct pipe_context *ctx,
 static void* r300_transfer_map(struct pipe_context *ctx,
                                struct pipe_transfer *transfer)
 {
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys;
     struct r300_transfer *r300transfer = r300_transfer(transfer);
     struct r300_texture *tex = (struct r300_texture*)transfer->texture;
     char *map;
@@ -233,12 +236,12 @@ static void* r300_transfer_map(struct pipe_context *ctx,
     if (r300transfer->detiled_texture) {
         /* The detiled texture is of the same size as the region being mapped
          * (no offset needed). */
-        return pipe_buffer_map(ctx->screen,
+        return rws->buffer_map(rws,
                                r300transfer->detiled_texture->buffer,
                                pipe_transfer_buffer_flags(transfer));
     } else {
         /* Tiling is disabled. */
-        map = pipe_buffer_map(ctx->screen, tex->buffer,
+        map = rws->buffer_map(rws, tex->buffer,
                               pipe_transfer_buffer_flags(transfer));
 
         if (!map) {
@@ -254,13 +257,14 @@ static void* r300_transfer_map(struct pipe_context *ctx,
 static void r300_transfer_unmap(struct pipe_context *ctx,
                                 struct pipe_transfer *transfer)
 {
+    struct r300_winsys_screen *rws = (struct r300_winsys_screen *)ctx->winsys;
     struct r300_transfer *r300transfer = r300_transfer(transfer);
     struct r300_texture *tex = (struct r300_texture*)transfer->texture;
 
     if (r300transfer->detiled_texture) {
-        pipe_buffer_unmap(ctx->screen, r300transfer->detiled_texture->buffer);
+	rws->buffer_unmap(rws, r300transfer->detiled_texture->buffer);
     } else {
-        pipe_buffer_unmap(ctx->screen, tex->buffer);
+        rws->buffer_unmap(rws, tex->buffer);
     }
 }
 
diff --git a/src/gallium/drivers/r300/r300_winsys.h b/src/gallium/drivers/r300/r300_winsys.h
index ddf2b790039..e5183a8239c 100644
--- a/src/gallium/drivers/r300/r300_winsys.h
+++ b/src/gallium/drivers/r300/r300_winsys.h
@@ -23,10 +23,6 @@
 #ifndef R300_WINSYS_H
 #define R300_WINSYS_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* The public interface header for the r300 pipe driver.
  * Any winsys hosting this pipe needs to implement r300_winsys and then
  * call r300_create_screen to start things. */
@@ -34,14 +30,146 @@ extern "C" {
 #include "pipe/p_defines.h"
 #include "pipe/p_state.h"
 
-struct radeon_winsys;
+struct r300_winsys_screen;
 
 /* Creates a new r300 screen. */
-struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys);
+struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws);
+
+struct r300_winsys_buffer;
+
+
+boolean r300_get_texture_buffer(struct pipe_screen* screen,
+                                struct pipe_texture* texture,
+                                struct r300_winsys_buffer** buffer,
+                                unsigned *stride);
+
+enum r300_value_id {
+    R300_VID_PCI_ID,
+    R300_VID_GB_PIPES,
+    R300_VID_Z_PIPES,
+};
+
+#define R300_USAGE_FLAG_DONT_SYNC (1 << 17)
+
+struct r300_winsys_screen {
+    void (*destroy)(struct r300_winsys_screen *ws);
+    
+    /**
+     * Buffer management. Buffer attributes are mostly fixed over its lifetime.
+     *
+     * Remember that gallium gets to choose the interface it needs, and the
+     * window systems must then implement that interface (rather than the
+     * other way around...).
+     *
+     * usage is a bitmask of R300_WINSYS_BUFFER_USAGE_PIXEL/VERTEX/INDEX/CONSTANT. This
+     * usage argument is only an optimization hint, not a guarantee, therefore
+     * proper behavior must be observed in all circumstances.
+     *
+     * alignment indicates the client's alignment requirements, eg for
+     * SSE instructions.
+     */
+    struct r300_winsys_buffer *(*buffer_create)(struct r300_winsys_screen *ws,
+						unsigned alignment,
+						unsigned usage,
+						unsigned size);
+    
+    /**
+     * Map the entire data store of a buffer object into the client's address.
+     * flags is bitmask of R300_WINSYS_BUFFER_USAGE_CPU_READ/WRITE flags.
+     */
+    void *(*buffer_map)( struct r300_winsys_screen *ws,
+			 struct r300_winsys_buffer *buf,
+			 unsigned usage);
+
+    void (*buffer_unmap)( struct r300_winsys_screen *ws,
+			  struct r300_winsys_buffer *buf );
+
+    void (*buffer_destroy)( struct r300_winsys_buffer *buf );
+
+
+    void (*buffer_reference)(struct r300_winsys_screen *rws,
+			     struct r300_winsys_buffer **pdst,
+			     struct r300_winsys_buffer *src);
+
+    boolean (*buffer_references)(struct r300_winsys_buffer *a,
+				 struct r300_winsys_buffer *b);
+
+    void (*buffer_flush_range)(struct r300_winsys_screen *rws,
+			       struct r300_winsys_buffer *buf,
+			       unsigned offset,
+			       unsigned length);
+
+    /* Add a pipe_buffer to the list of buffer objects to validate. */
+    boolean (*add_buffer)(struct r300_winsys_screen *winsys,
+                          struct r300_winsys_buffer *buf,
+                          uint32_t rd,
+                          uint32_t wd);
+
+
+    /* Revalidate all currently setup pipe_buffers.
+     * Returns TRUE if a flush is required. */
+    boolean (*validate)(struct r300_winsys_screen* winsys);
+
+    /* Check to see if there's room for commands. */
+    boolean (*check_cs)(struct r300_winsys_screen* winsys, int size);
+
+    /* Start a command emit. */
+    void (*begin_cs)(struct r300_winsys_screen* winsys,
+                     int size,
+                     const char* file,
+                     const char* function,
+                     int line);
+
+    /* Write a dword to the command buffer. */
+    void (*write_cs_dword)(struct r300_winsys_screen* winsys, uint32_t dword);
+
+    /* Write a relocated dword to the command buffer. */
+    void (*write_cs_reloc)(struct r300_winsys_screen *winsys,
+                           struct r300_winsys_buffer *buf,
+                           uint32_t rd,
+                           uint32_t wd,
+                           uint32_t flags);
+
+    /* Finish a command emit. */
+    void (*end_cs)(struct r300_winsys_screen* winsys,
+                   const char* file,
+                   const char* function,
+                   int line);
+
+    /* Flush the CS. */
+    void (*flush_cs)(struct r300_winsys_screen* winsys);
+
+    /* winsys flush - callback from winsys when flush required */
+    void (*set_flush_cb)(struct r300_winsys_screen *winsys,
+			 void (*flush_cb)(void *), void *data);
+
+    void (*reset_bos)(struct r300_winsys_screen *winsys);
+
+    void (*buffer_set_tiling)(struct r300_winsys_screen *winsys,
+                              struct r300_winsys_buffer *buffer,
+                              uint32_t pitch,
+                              boolean microtiled,
+                              boolean macrotiled);
+
+    uint32_t (*get_value)(struct r300_winsys_screen *winsys,
+			  enum r300_value_id vid);
+
+    struct r300_winsys_buffer *(*buffer_from_handle)(struct r300_winsys_screen *winsys,
+						     struct pipe_screen *screen,
+						     struct winsys_handle *whandle,
+						     unsigned *stride);
+    boolean (*buffer_get_handle)(struct r300_winsys_screen *winsys,
+				 struct r300_winsys_buffer *buffer,
+				 unsigned stride,
+				 struct winsys_handle *whandle);
+
+    boolean (*is_buffer_referenced)(struct r300_winsys_screen *winsys,
+                                    struct r300_winsys_buffer *buffer);
 
+  
+};
 
-#ifdef __cplusplus
-}
-#endif
+struct r300_winsys_screen *
+r300_winsys_screen(struct pipe_screen *screen);
 
 #endif /* R300_WINSYS_H */