i915: Drop all has_llc code.

i915 never has llc.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/drivers/dri/i915/intel_batchbuffer.c

@@ -40,10 +40,8 @@ intel_batchbuffer_init(struct intel_context *intel)
 {
    intel_batchbuffer_reset(intel);
 
-   if (!intel->has_llc) {
    intel->batch.cpu_map = malloc(intel->maxBatchSize);
    intel->batch.map = intel->batch.cpu_map;
-   }
 }
 
 static void
@@ -57,10 +55,6 @@ intel_batchbuffer_reset(struct intel_context *intel)
 
    intel->batch.bo = drm_intel_bo_alloc(intel->bufmgr, "batchbuffer",
 					intel->maxBatchSize, 4096);
-   if (intel->has_llc) {
-      drm_intel_bo_map(intel->batch.bo, true);
-      intel->batch.map = intel->batch.bo->virtual;
-   }
 
    intel->batch.reserved_space = BATCH_RESERVED;
    intel->batch.state_batch_offset = intel->batch.bo->size;
@@ -124,9 +118,6 @@ do_flush_locked(struct intel_context *intel)
    struct intel_batchbuffer *batch = &intel->batch;
    int ret = 0;
 
-   if (intel->has_llc) {
-      drm_intel_bo_unmap(batch->bo);
-   } else {
    ret = drm_intel_bo_subdata(batch->bo, 0, 4*batch->used, batch->map);
    if (ret == 0 && batch->state_batch_offset != batch->bo->size) {
       ret = drm_intel_bo_subdata(batch->bo,
@@ -134,7 +125,6 @@ do_flush_locked(struct intel_context *intel)
                                  batch->bo->size - batch->state_batch_offset,
                                  (char *)batch->map + batch->state_batch_offset);
    }
-   }
 
    if (!intel->intelScreen->no_hw) {
       int flags = I915_EXEC_RENDER;

src/mesa/drivers/dri/i915/intel_context.c

@@ -493,7 +493,6 @@ intelInitContext(struct intel_context *intel,
       intel->is_945 = true;
    }
 
-   intel->has_llc = intel->intelScreen->hw_has_llc;
    intel->has_swizzling = intel->intelScreen->hw_has_swizzling;
 
    memset(&ctx->TextureFormatSupported,

src/mesa/drivers/dri/i915/intel_mipmap_tree.c

@@ -882,13 +882,7 @@ intel_miptree_map(struct intel_context *intel,
    }
 
    /* See intel_miptree_blit() for details on the 32k pitch limit. */
-   if (intel->has_llc &&
+   if (mt->region->tiling != I915_TILING_NONE &&
-       !(mode & GL_MAP_WRITE_BIT) &&
-       !mt->compressed &&
-       mt->region->tiling == I915_TILING_X &&
-       mt->region->pitch < 32768) {
-      intel_miptree_map_blit(intel, mt, map, level, slice);
-   } else if (mt->region->tiling != I915_TILING_NONE &&
        mt->region->bo->size >= intel->max_gtt_map_object_size) {
       assert(mt->region->pitch < 32768);
       intel_miptree_map_blit(intel, mt, map, level, slice);

src/mesa/drivers/dri/i915/intel_screen.c

@@ -1171,12 +1171,6 @@ __DRIconfig **intelInitScreen2(__DRIscreen *psp)
       intelScreen->gen = 2;
    }
 
-   int has_llc = 0;
-   bool success = intel_get_param(intelScreen->driScrnPriv, I915_PARAM_HAS_LLC,
-				  &has_llc);
-   if (success && has_llc)
-      intelScreen->hw_has_llc = true;
-
    intelScreen->hw_has_swizzling = intel_detect_swizzling(intelScreen);
 
    set_max_gl_versions(intelScreen);

src/mesa/drivers/dri/i915/intel_screen.h

@@ -49,7 +49,6 @@ struct intel_screen
 
    bool no_hw;
 
-   bool hw_has_llc;
    bool hw_has_swizzling;
 
    bool no_vbo;

src/mesa/drivers/dri/i915/intel_tex.h

@@ -68,15 +68,4 @@ bool
 intel_tex_image_s8z24_create_renderbuffers(struct intel_context *intel,
 					   struct intel_texture_image *image);
 
-bool
-intel_texsubimage_tiled_memcpy(struct gl_context *ctx,
-                               GLuint dims,
-                               struct gl_texture_image *texImage,
-                               GLint xoffset, GLint yoffset, GLint zoffset,
-                               GLsizei width, GLsizei height, GLsizei depth,
-                               GLenum format, GLenum type,
-                               const GLvoid *pixels,
-                               const struct gl_pixelstore_attrib *packing,
-                               bool for_glTexImage);
-
 #endif

src/mesa/drivers/dri/i915/intel_tex_image.c

@@ -187,22 +187,10 @@ intelTexImage(struct gl_context * ctx,
               GLenum format, GLenum type, const void *pixels,
               const struct gl_pixelstore_attrib *unpack)
 {
-   bool ok;
-
    DBG("%s target %s level %d %dx%dx%d\n", __FUNCTION__,
        _mesa_lookup_enum_by_nr(texImage->TexObject->Target),
        texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
 
-   ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
-                                       0, 0, 0, /*x,y,z offsets*/
-                                       texImage->Width,
-                                       texImage->Height,
-                                       texImage->Depth,
-                                       format, type, pixels, unpack,
-                                       true /*for_glTexImage*/);
-   if (ok)
-      return;
-
    /* Attempt to use the blitter for PBO image uploads.
     */
    if (dims <= 2 &&

src/mesa/drivers/dri/i915/intel_tex_subimage.c

@@ -126,165 +126,6 @@ err:
    return false;
 }
 
-/**
- * \brief A fast path for glTexImage and glTexSubImage.
- *
- * \param for_glTexImage Was this called from glTexImage or glTexSubImage?
- *
- * This fast path is taken when the hardware natively supports the texture
- * format (such as GL_BGRA) and when the texture memory is X-tiled. It uploads
- * the texture data by mapping the texture memory without a GTT fence, thus
- * acquiring a tiled view of the memory, and then memcpy'ing sucessive
- * subspans within each tile.
- *
- * This is a performance win over the conventional texture upload path because
- * it avoids the performance penalty of writing through the write-combine
- * buffer. In the conventional texture upload path,
- * texstore.c:store_texsubimage(), the texture memory is mapped through a GTT
- * fence, thus acquiring a linear view of the memory, then each row in the
- * image is memcpy'd. In this fast path, we replace each row's memcpy with
- * a sequence of memcpy's over each bit6 swizzle span in the row.
- *
- * This fast path's use case is Google Chrome's paint rectangles.  Chrome (as
- * of version 21) renders each page as a tiling of 256x256 GL_BGRA textures.
- * Each page's content is initially uploaded with glTexImage2D and damaged
- * regions are updated with glTexSubImage2D. On some workloads, the
- * performance gain of this fastpath on Sandybridge is over 5x.
- */
-bool
-intel_texsubimage_tiled_memcpy(struct gl_context * ctx,
-                               GLuint dims,
-                               struct gl_texture_image *texImage,
-                               GLint xoffset, GLint yoffset, GLint zoffset,
-                               GLsizei width, GLsizei height, GLsizei depth,
-                               GLenum format, GLenum type,
-                               const GLvoid *pixels,
-                               const struct gl_pixelstore_attrib *packing,
-                               bool for_glTexImage)
-{
-   struct intel_context *intel = intel_context(ctx);
-   struct intel_texture_image *image = intel_texture_image(texImage);
-
-   /* The miptree's buffer. */
-   drm_intel_bo *bo;
-
-   int error = 0;
-
-   /* This fastpath is restricted to a specific texture type: level 0 of
-    * a 2D BGRA texture. It could be generalized to support more types by
-    * varying the arithmetic loop below.
-    */
-   if (!intel->has_llc ||
-       format != GL_BGRA ||
-       type != GL_UNSIGNED_BYTE ||
-       texImage->TexFormat != MESA_FORMAT_ARGB8888 ||
-       texImage->TexObject->Target != GL_TEXTURE_2D ||
-       texImage->Level != 0 ||
-       pixels == NULL ||
-       _mesa_is_bufferobj(packing->BufferObj) ||
-       packing->Alignment > 4 ||
-       packing->SkipPixels > 0 ||
-       packing->SkipRows > 0 ||
-       (packing->RowLength != 0 && packing->RowLength != width) ||
-       packing->SwapBytes ||
-       packing->LsbFirst ||
-       packing->Invert)
-      return false;
-
-   if (for_glTexImage)
-      ctx->Driver.AllocTextureImageBuffer(ctx, texImage);
-
-   if (!image->mt ||
-       image->mt->region->tiling != I915_TILING_X) {
-      /* The algorithm below is written only for X-tiled memory. */
-      return false;
-   }
-
-   bo = image->mt->region->bo;
-
-   if (drm_intel_bo_references(intel->batch.bo, bo)) {
-      perf_debug("Flushing before mapping a referenced bo.\n");
-      intel_batchbuffer_flush(intel);
-   }
-
-   if (unlikely(intel->perf_debug)) {
-      if (drm_intel_bo_busy(bo)) {
-         perf_debug("Mapping a busy BO, causing a stall on the GPU.\n");
-      }
-   }
-
-   error = drm_intel_bo_map(bo, true /*write_enable*/);
-   if (error || bo->virtual == NULL) {
-      DBG("%s: failed to map bo\n", __FUNCTION__);
-      return false;
-   }
-
-   /* We postponed printing this message until having committed to executing
-    * the function.
-    */
-   DBG("%s: level=%d offset=(%d,%d) (w,h)=(%d,%d)\n",
-       __FUNCTION__, texImage->Level, xoffset, yoffset, width, height);
-
-   /* In the tiling algorithm below, some variables are in units of pixels,
-    * others are in units of bytes, and others (such as height) are unitless.
-    * Each variable name is suffixed with its units.
-    */
-
-   const uint32_t x_max_pixels = xoffset + width;
-   const uint32_t y_max_pixels = yoffset + height;
-
-   const uint32_t tile_size_bytes = 4096;
-
-   const uint32_t tile_width_bytes = 512;
-   const uint32_t tile_width_pixels = 128;
-
-   const uint32_t tile_height = 8;
-
-   const uint32_t cpp = 4; /* chars per pixel of GL_BGRA */
-   const uint32_t swizzle_width_pixels = 16;
-
-   const uint32_t stride_bytes = image->mt->region->pitch;
-   const uint32_t width_tiles = stride_bytes / tile_width_bytes;
-
-   for (uint32_t y_pixels = yoffset; y_pixels < y_max_pixels; ++y_pixels) {
-      const uint32_t y_offset_bytes = (y_pixels / tile_height) * width_tiles * tile_size_bytes
-                                    + (y_pixels % tile_height) * tile_width_bytes;
-
-      for (uint32_t x_pixels = xoffset; x_pixels < x_max_pixels; x_pixels += swizzle_width_pixels) {
-         const uint32_t x_offset_bytes = (x_pixels / tile_width_pixels) * tile_size_bytes
-                                       + (x_pixels % tile_width_pixels) * cpp;
-
-         intptr_t offset_bytes = y_offset_bytes + x_offset_bytes;
-         if (intel->has_swizzling) {
-#if 0
-            /* Clear, unoptimized version. */
-            bool bit6 = (offset_bytes >> 6) & 1;
-            bool bit9 = (offset_bytes >> 9) & 1;
-            bool bit10 = (offset_bytes >> 10) & 1;
-
-            if (bit9 ^ bit10)
-               offset_bytes ^= (1 << 6);
-#else
-            /* Optimized, obfuscated version. */
-            offset_bytes ^= ((offset_bytes >> 3) ^ (offset_bytes >> 4))
-                          & (1 << 6);
-#endif
-         }
-
-         const uint32_t swizzle_bound_pixels = ALIGN(x_pixels + 1, swizzle_width_pixels);
-         const uint32_t memcpy_bound_pixels = MIN2(x_max_pixels, swizzle_bound_pixels);
-         const uint32_t copy_size = cpp * (memcpy_bound_pixels - x_pixels);
-
-         memcpy(bo->virtual + offset_bytes, pixels, copy_size);
-         pixels += copy_size;
-         x_pixels -= (x_pixels % swizzle_width_pixels);
-      }
-   }
-
-   drm_intel_bo_unmap(bo);
-   return true;
-}
-
 static void
 intelTexSubImage(struct gl_context * ctx,
                  GLuint dims,
@@ -295,16 +136,6 @@ intelTexSubImage(struct gl_context * ctx,
                  const GLvoid * pixels,
                  const struct gl_pixelstore_attrib *packing)
 {
-   bool ok;
-
-   ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
-                                       xoffset, yoffset, zoffset,
-                                       width, height, depth,
-                                       format, type, pixels, packing,
-                                       false /*for_glTexImage*/);
-   if (ok)
-     return;
-
    /* The intel_blit_texsubimage() function only handles 2D images */
    if (dims != 2 || !intel_blit_texsubimage(ctx, texImage,
 			       xoffset, yoffset,