* hardware's draing engine.
*
* To access a buffer object's memory from the DRM driver, call
- * drm_gem_vram_kmap(). It (optionally) maps the buffer into kernel address
- * space and returns the memory address. Use drm_gem_vram_kunmap() to
+ * drm_gem_vram_vmap(). It maps the buffer into kernel address
+ * space and returns the memory address. Use drm_gem_vram_vunmap() to
* release the mapping.
*/
static void drm_gem_vram_placement(struct drm_gem_vram_object *gbo,
unsigned long pl_flag)
{
+ u32 invariant_flags = 0;
unsigned int i;
unsigned int c = 0;
- u32 invariant_flags = pl_flag & TTM_PL_FLAG_TOPDOWN;
+
+ if (pl_flag & DRM_GEM_VRAM_PL_FLAG_TOPDOWN)
+ pl_flag = TTM_PL_FLAG_TOPDOWN;
gbo->placement.placement = gbo->placements;
gbo->placement.busy_placement = gbo->placements;
- if (pl_flag & TTM_PL_FLAG_VRAM)
+ if (pl_flag & DRM_GEM_VRAM_PL_FLAG_VRAM) {
+ gbo->placements[c].mem_type = TTM_PL_VRAM;
gbo->placements[c++].flags = TTM_PL_FLAG_WC |
TTM_PL_FLAG_UNCACHED |
- TTM_PL_FLAG_VRAM |
- invariant_flags;
-
- if (pl_flag & TTM_PL_FLAG_SYSTEM)
- gbo->placements[c++].flags = TTM_PL_MASK_CACHING |
- TTM_PL_FLAG_SYSTEM |
invariant_flags;
+ }
- if (!c)
+ if (pl_flag & DRM_GEM_VRAM_PL_FLAG_SYSTEM || !c) {
+ gbo->placements[c].mem_type = TTM_PL_SYSTEM;
gbo->placements[c++].flags = TTM_PL_MASK_CACHING |
- TTM_PL_FLAG_SYSTEM |
invariant_flags;
+ }
gbo->placement.num_placement = c;
gbo->placement.num_busy_placement = c;
}
}
+/*
+ * Note that on error, drm_gem_vram_init will free the buffer object.
+ */
+
static int drm_gem_vram_init(struct drm_device *dev,
struct drm_gem_vram_object *gbo,
size_t size, unsigned long pg_align)
int ret;
size_t acc_size;
- if (WARN_ONCE(!vmm, "VRAM MM not initialized"))
+ if (WARN_ONCE(!vmm, "VRAM MM not initialized")) {
+ kfree(gbo);
return -EINVAL;
+ }
bdev = &vmm->bdev;
gbo->bo.base.funcs = &drm_gem_vram_object_funcs;
ret = drm_gem_object_init(dev, &gbo->bo.base, size);
- if (ret)
+ if (ret) {
+ kfree(gbo);
return ret;
+ }
acc_size = ttm_bo_dma_acc_size(bdev, size, sizeof(*gbo));
gbo->bo.bdev = bdev;
- drm_gem_vram_placement(gbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
+ drm_gem_vram_placement(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM |
+ DRM_GEM_VRAM_PL_FLAG_SYSTEM);
ret = ttm_bo_init(bdev, &gbo->bo, size, ttm_bo_type_device,
&gbo->placement, pg_align, false, acc_size,
NULL, NULL, ttm_buffer_object_destroy);
if (ret)
- goto err_drm_gem_object_release;
+ /*
+ * A failing ttm_bo_init will call ttm_buffer_object_destroy
+ * to release gbo->bo.base and kfree gbo.
+ */
+ return ret;
return 0;
-
-err_drm_gem_object_release:
- drm_gem_object_release(&gbo->bo.base);
- return ret;
}
/**
ret = drm_gem_vram_init(dev, gbo, size, pg_align);
if (ret < 0)
- goto err_kfree;
+ return ERR_PTR(ret);
return gbo;
-
-err_kfree:
- kfree(gbo);
- return ERR_PTR(ret);
}
EXPORT_SYMBOL(drm_gem_vram_create);
return kmap->virtual;
}
-/**
- * drm_gem_vram_kmap() - Maps a GEM VRAM object into kernel address space
- * @gbo: the GEM VRAM object
- * @map: establish a mapping if necessary
- * @is_iomem: returns true if the mapped memory is I/O memory, or false \
- otherwise; can be NULL
- *
- * This function maps the buffer object into the kernel's address space
- * or returns the current mapping. If the parameter map is false, the
- * function only queries the current mapping, but does not establish a
- * new one.
- *
- * Returns:
- * The buffers virtual address if mapped, or
- * NULL if not mapped, or
- * an ERR_PTR()-encoded error code otherwise.
- */
-void *drm_gem_vram_kmap(struct drm_gem_vram_object *gbo, bool map,
- bool *is_iomem)
-{
- int ret;
- void *virtual;
-
- ret = ttm_bo_reserve(&gbo->bo, true, false, NULL);
- if (ret)
- return ERR_PTR(ret);
- virtual = drm_gem_vram_kmap_locked(gbo, map, is_iomem);
- ttm_bo_unreserve(&gbo->bo);
-
- return virtual;
-}
-EXPORT_SYMBOL(drm_gem_vram_kmap);
-
static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo)
{
if (WARN_ON_ONCE(!gbo->kmap_use_count))
*/
}
-/**
- * drm_gem_vram_kunmap() - Unmaps a GEM VRAM object
- * @gbo: the GEM VRAM object
- */
-void drm_gem_vram_kunmap(struct drm_gem_vram_object *gbo)
-{
- int ret;
-
- ret = ttm_bo_reserve(&gbo->bo, false, false, NULL);
- if (WARN_ONCE(ret, "ttm_bo_reserve_failed(): ret=%d\n", ret))
- return;
- drm_gem_vram_kunmap_locked(gbo);
- ttm_bo_unreserve(&gbo->bo);
-}
-EXPORT_SYMBOL(drm_gem_vram_kunmap);
-
/**
* drm_gem_vram_vmap() - Pins and maps a GEM VRAM object into kernel address
* space
* permanently. Call drm_gem_vram_vunmap() with the returned address to
* unmap and unpin the GEM VRAM object.
*
- * If you have special requirements for the pinning or mapping operations,
- * call drm_gem_vram_pin() and drm_gem_vram_kmap() directly.
- *
* Returns:
* The buffer's virtual address on success, or
* an ERR_PTR()-encoded error code otherwise.
static void drm_gem_vram_bo_driver_evict_flags(struct drm_gem_vram_object *gbo,
struct ttm_placement *pl)
{
- drm_gem_vram_placement(gbo, TTM_PL_FLAG_SYSTEM);
+ drm_gem_vram_placement(gbo, DRM_GEM_VRAM_PL_FLAG_SYSTEM);
*pl = gbo->placement;
}
static void drm_gem_vram_bo_driver_move_notify(struct drm_gem_vram_object *gbo,
bool evict,
- struct ttm_mem_reg *new_mem)
+ struct ttm_resource *new_mem)
{
struct ttm_bo_kmap_obj *kmap = &gbo->kmap;
* TTM TT
*/
-static void backend_func_destroy(struct ttm_tt *tt)
+static void bo_driver_ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *tt)
{
+ ttm_tt_destroy_common(bdev, tt);
ttm_tt_fini(tt);
kfree(tt);
}
-static struct ttm_backend_func backend_func = {
- .destroy = backend_func_destroy
-};
-
/*
* TTM BO device
*/
if (!tt)
return NULL;
- tt->func = &backend_func;
-
ret = ttm_tt_init(tt, bo, page_flags);
if (ret < 0)
goto err_ttm_tt_init;
return NULL;
}
-static int bo_driver_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
- struct ttm_mem_type_manager *man)
-{
- switch (type) {
- case TTM_PL_SYSTEM:
- man->flags = 0;
- man->available_caching = TTM_PL_MASK_CACHING;
- man->default_caching = TTM_PL_FLAG_CACHED;
- break;
- case TTM_PL_VRAM:
- man->func = &ttm_bo_manager_func;
- man->flags = TTM_MEMTYPE_FLAG_FIXED;
- man->available_caching = TTM_PL_FLAG_UNCACHED |
- TTM_PL_FLAG_WC;
- man->default_caching = TTM_PL_FLAG_WC;
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
static void bo_driver_evict_flags(struct ttm_buffer_object *bo,
struct ttm_placement *placement)
{
static void bo_driver_move_notify(struct ttm_buffer_object *bo,
bool evict,
- struct ttm_mem_reg *new_mem)
+ struct ttm_resource *new_mem)
{
struct drm_gem_vram_object *gbo;
}
static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem)
+ struct ttm_resource *mem)
{
struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bdev);
- mem->bus.addr = NULL;
- mem->bus.size = mem->num_pages << PAGE_SHIFT;
-
switch (mem->mem_type) {
case TTM_PL_SYSTEM: /* nothing to do */
- mem->bus.offset = 0;
- mem->bus.base = 0;
- mem->bus.is_iomem = false;
break;
case TTM_PL_VRAM:
- mem->bus.offset = mem->start << PAGE_SHIFT;
- mem->bus.base = vmm->vram_base;
+ mem->bus.offset = (mem->start << PAGE_SHIFT) + vmm->vram_base;
mem->bus.is_iomem = true;
break;
default:
static struct ttm_bo_driver bo_driver = {
.ttm_tt_create = bo_driver_ttm_tt_create,
- .ttm_tt_populate = ttm_pool_populate,
- .ttm_tt_unpopulate = ttm_pool_unpopulate,
- .init_mem_type = bo_driver_init_mem_type,
+ .ttm_tt_destroy = bo_driver_ttm_tt_destroy,
.eviction_valuable = ttm_bo_eviction_valuable,
.evict_flags = bo_driver_evict_flags,
.move_notify = bo_driver_move_notify,
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
struct drm_vram_mm *vmm = node->minor->dev->vram_mm;
- struct drm_mm *mm = vmm->bdev.man[TTM_PL_VRAM].priv;
+ struct ttm_resource_manager *man = ttm_manager_type(&vmm->bdev, TTM_PL_VRAM);
struct drm_printer p = drm_seq_file_printer(m);
- spin_lock(&ttm_bo_glob.lru_lock);
- drm_mm_print(mm, &p);
- spin_unlock(&ttm_bo_glob.lru_lock);
+ ttm_resource_manager_debug(man, &p);
return 0;
}
if (ret)
return ret;
- ret = ttm_bo_init_mm(&vmm->bdev, TTM_PL_VRAM, vram_size >> PAGE_SHIFT);
+ ret = ttm_range_man_init(&vmm->bdev, TTM_PL_VRAM,
+ false, vram_size >> PAGE_SHIFT);
if (ret)
return ret;
static void drm_vram_mm_cleanup(struct drm_vram_mm *vmm)
{
+ ttm_range_man_fini(&vmm->bdev, TTM_PL_VRAM);
ttm_bo_device_release(&vmm->bdev);
}
projects / linux-2.6-microblaze.git / blobdiff