diff options
Diffstat (limited to 'linux-core/i915_buffer.c')
| -rw-r--r-- | linux-core/i915_buffer.c | 175 |
1 files changed, 172 insertions, 3 deletions
diff --git a/linux-core/i915_buffer.c b/linux-core/i915_buffer.c index c3e54468..8797de89 100644 --- a/linux-core/i915_buffer.c +++ b/linux-core/i915_buffer.c @@ -33,16 +33,15 @@ #include "i915_drm.h" #include "i915_drv.h" - drm_ttm_backend_t *i915_create_ttm_backend_entry(drm_device_t * dev) { return drm_agp_init_ttm(dev, NULL); } -int i915_fence_types(uint32_t buffer_flags, uint32_t * class, uint32_t * type) +int i915_fence_types(drm_buffer_object_t *bo, uint32_t * class, uint32_t * type) { *class = 0; - if (buffer_flags & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE)) + if (bo->mem.flags & (DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE)) *type = 3; else *type = 1; @@ -64,3 +63,173 @@ int i915_invalidate_caches(drm_device_t * dev, uint32_t flags) return i915_emit_mi_flush(dev, flush_cmd); } + +int i915_init_mem_type(drm_device_t * dev, uint32_t type, + drm_mem_type_manager_t * man) +{ + switch (type) { + case DRM_BO_MEM_LOCAL: + man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | + _DRM_FLAG_MEMTYPE_CACHED; + man->drm_bus_maptype = 0; + break; + case DRM_BO_MEM_TT: + if (!(drm_core_has_AGP(dev) && dev->agp)) { + DRM_ERROR("AGP is not enabled for memory type %u\n", + (unsigned)type); + return -EINVAL; + } + man->io_offset = dev->agp->agp_info.aper_base; + man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024; + man->io_addr = NULL; + man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | + _DRM_FLAG_MEMTYPE_CSELECT | _DRM_FLAG_NEEDS_IOREMAP; + man->drm_bus_maptype = _DRM_AGP; + break; + case DRM_BO_MEM_PRIV0: + if (!(drm_core_has_AGP(dev) && dev->agp)) { + DRM_ERROR("AGP is not enabled for memory type %u\n", + (unsigned)type); + return -EINVAL; + } + man->io_offset = dev->agp->agp_info.aper_base; + man->io_size = dev->agp->agp_info.aper_size * 1024 * 1024; + man->io_addr = NULL; + man->flags = _DRM_FLAG_MEMTYPE_MAPPABLE | + _DRM_FLAG_MEMTYPE_FIXED | _DRM_FLAG_NEEDS_IOREMAP; + man->drm_bus_maptype = _DRM_AGP; + break; + default: + DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); + return -EINVAL; + } + return 0; +} + +uint32_t i915_evict_mask(drm_buffer_object_t *bo) +{ + switch (bo->mem.mem_type) { + case DRM_BO_MEM_LOCAL: + case DRM_BO_MEM_TT: + return DRM_BO_FLAG_MEM_LOCAL; + default: + return DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_CACHED; + } +} + +static void i915_emit_copy_blit(drm_device_t * dev, + uint32_t src_offset, + uint32_t dst_offset, + uint32_t pages, int direction) +{ + uint32_t cur_pages; + uint32_t stride = PAGE_SIZE; + drm_i915_private_t *dev_priv = dev->dev_private; + RING_LOCALS; + + if (!dev_priv) + return; + + i915_kernel_lost_context(dev); + while (pages > 0) { + cur_pages = pages; + if (cur_pages > 2048) + cur_pages = 2048; + pages -= cur_pages; + + BEGIN_LP_RING(6); + OUT_RING(SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA | + XY_SRC_COPY_BLT_WRITE_RGB); + OUT_RING((stride & 0xffff) | (0xcc << 16) | (1 << 24) | + (1 << 25) | (direction ? (1 << 30) : 0)); + OUT_RING((cur_pages << 16) | PAGE_SIZE); + OUT_RING(dst_offset); + OUT_RING(stride & 0xffff); + OUT_RING(src_offset); + ADVANCE_LP_RING(); + } + return; +} + +static int i915_move_blit(drm_buffer_object_t * bo, + int evict, int no_wait, drm_bo_mem_reg_t * new_mem) +{ + drm_bo_mem_reg_t *old_mem = &bo->mem; + int dir = 0; + + if ((old_mem->mem_type == new_mem->mem_type) && + (new_mem->mm_node->start < + old_mem->mm_node->start + old_mem->mm_node->size)) { + dir = 1; + } + + i915_emit_copy_blit(bo->dev, + old_mem->mm_node->start << PAGE_SHIFT, + new_mem->mm_node->start << PAGE_SHIFT, + new_mem->num_pages, dir); + + i915_emit_mi_flush(bo->dev, MI_READ_FLUSH | MI_EXE_FLUSH); + + return drm_bo_move_accel_cleanup(bo, evict, no_wait, 0, + DRM_FENCE_TYPE_EXE | + DRM_I915_FENCE_TYPE_RW, + DRM_I915_FENCE_FLAG_FLUSHED, new_mem); +} + +/* + * Flip destination ttm into cached-coherent AGP, + * then blit and subsequently move out again. + */ + +static int i915_move_flip(drm_buffer_object_t * bo, + int evict, int no_wait, drm_bo_mem_reg_t * new_mem) +{ + drm_device_t *dev = bo->dev; + drm_bo_mem_reg_t tmp_mem; + int ret; + + tmp_mem = *new_mem; + tmp_mem.mm_node = NULL; + tmp_mem.mask = DRM_BO_FLAG_MEM_TT | + DRM_BO_FLAG_CACHED | DRM_BO_FLAG_FORCE_CACHING; + + ret = drm_bo_mem_space(bo, &tmp_mem, no_wait); + if (ret) + return ret; + + ret = drm_bind_ttm(bo->ttm, 1, tmp_mem.mm_node->start); + if (ret) + goto out_cleanup; + + ret = i915_move_blit(bo, 1, no_wait, &tmp_mem); + if (ret) + goto out_cleanup; + + ret = drm_bo_move_ttm(bo, evict, no_wait, new_mem); +out_cleanup: + if (tmp_mem.mm_node) { + mutex_lock(&dev->struct_mutex); + if (tmp_mem.mm_node != bo->pinned_node) + drm_mm_put_block(tmp_mem.mm_node); + tmp_mem.mm_node = NULL; + mutex_unlock(&dev->struct_mutex); + } + return ret; +} + +int i915_move(drm_buffer_object_t * bo, + int evict, int no_wait, drm_bo_mem_reg_t * new_mem) +{ + drm_bo_mem_reg_t *old_mem = &bo->mem; + + if (old_mem->mem_type == DRM_BO_MEM_LOCAL) { + return drm_bo_move_memcpy(bo, evict, no_wait, new_mem); + } else if (new_mem->mem_type == DRM_BO_MEM_LOCAL) { + if (i915_move_flip(bo, evict, no_wait, new_mem)) + return drm_bo_move_memcpy(bo, evict, no_wait, new_mem); + } else { + if (i915_move_blit(bo, evict, no_wait, new_mem)) + return drm_bo_move_memcpy(bo, evict, no_wait, new_mem); + } + return 0; +} |