Revert "r300-gallium, radeon-gallium: Nuke gb_pipes from orbit."

This reverts commit 6a40d1e9d9.

Turns out that we *do* need these for OQ after all. Go figure.

Conflicts:

	src/gallium/winsys/drm/radeon/core/radeon_r300.h

src/gallium/drivers/r300/r300_chipset.c

@@ -34,6 +34,7 @@ void r300_parse_chipset(struct r300_capabilities* caps)
     caps->is_r500 = FALSE;
     caps->num_vert_fpus = 4;
 
+
     /* Note: These are not ordered by PCI ID. I leave that task to GCC,
      * which will perform the ordering while collating jump tables. Instead,
      * I've tried to group them according to capabilities and age. */

src/gallium/drivers/r300/r300_chipset.h

@@ -34,6 +34,8 @@ struct r300_capabilities {
     int family;
     /* The number of vertex floating-point units */
     int num_vert_fpus;
+    /* The number of fragment pipes */
+    int num_frag_pipes;
     /* Whether or not TCL is physically present */
     boolean has_tcl;
     /* Whether or not this is an RV515 or newer; R500s have many differences

src/gallium/drivers/r300/r300_screen.c

@@ -392,6 +392,7 @@ struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
         return NULL;
 
     caps->pci_id = r300_winsys->pci_id;
+    caps->num_frag_pipes = r300_winsys->gb_pipes;
 
     r300_parse_chipset(caps);
 

src/gallium/drivers/r300/r300_state_inlines.h

@@ -353,6 +353,25 @@ static INLINE uint32_t r300_translate_out_fmt(enum pipe_format format)
 
 /* Non-CSO state. (For now.) */
 
+static INLINE uint32_t r300_translate_gb_pipes(int pipe_count)
+{
+    switch (pipe_count) {
+        case 1:
+            return R300_GB_TILE_PIPE_COUNT_RV300;
+            break;
+        case 2:
+            return R300_GB_TILE_PIPE_COUNT_R300;
+            break;
+        case 3:
+            return R300_GB_TILE_PIPE_COUNT_R420_3P;
+            break;
+        case 4:
+            return R300_GB_TILE_PIPE_COUNT_R420;
+            break;
+    }
+    return 0;
+}
+
 static INLINE uint32_t translate_vertex_data_type(int type) {
     switch (type) {
         case EMIT_1F:

src/gallium/drivers/r300/r300_winsys.h

@@ -45,6 +45,9 @@ struct r300_winsys {
     /* PCI ID */
     uint32_t pci_id;
 
+    /* GB pipe count */
+    uint32_t gb_pipes;
+
     /* GART size. */
     uint32_t gart_size;
 

src/gallium/winsys/drm/radeon/core/radeon_r300.c

@@ -139,7 +139,25 @@ static void do_ioctls(struct r300_winsys* winsys, int fd)
 
     info.value = ⌖
 
-    /* First, get PCI ID */
+    /* First, get the number of pixel pipes */
+    info.request = RADEON_INFO_NUM_GB_PIPES;
+    retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
+    if (retval) {
+        fprintf(stderr, "%s: New ioctl for GB pipe count failed "
+                "(error number %d), trying classic ioctl...\n",
+                __FUNCTION__, retval);
+        gp.param = RADEON_PARAM_NUM_GB_PIPES;
+        retval = drmCommandWriteRead(fd, DRM_RADEON_GETPARAM, &gp,
+                sizeof(gp));
+        if (retval) {
+            fprintf(stderr, "%s: Failed to get GB pipe count, "
+                    "error number %d\n", __FUNCTION__, retval);
+            exit(1);
+        }
+    }
+    winsys->gb_pipes = target;
+
+    /* Then, get PCI ID */
     info.request = RADEON_INFO_DEVICE_ID;
     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
     if (retval) {
@@ -149,7 +167,7 @@ static void do_ioctls(struct r300_winsys* winsys, int fd)
     }
     winsys->pci_id = target;
 
-    /* Then, retrieve MM info */
+    /* Finally, retrieve MM info */
     retval = drmCommandWriteRead(fd, DRM_RADEON_GEM_INFO,
             &gem_info, sizeof(gem_info));
     if (retval) {