diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_range_manager.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_range_manager.c | 57 |
1 files changed, 39 insertions, 18 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_range_manager.c b/drivers/gpu/drm/ttm/ttm_range_manager.c index b9d5da6e6a81..03395386e8a7 100644 --- a/drivers/gpu/drm/ttm/ttm_range_manager.c +++ b/drivers/gpu/drm/ttm/ttm_range_manager.c @@ -29,12 +29,13 @@ * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> */ -#include <drm/ttm/ttm_bo_driver.h> +#include <drm/ttm/ttm_device.h> #include <drm/ttm/ttm_placement.h> +#include <drm/ttm/ttm_range_manager.h> +#include <drm/ttm/ttm_bo_api.h> #include <drm/drm_mm.h> #include <linux/slab.h> #include <linux/spinlock.h> -#include <linux/module.h> /* * Currently we use a spinlock for the lock, but a mutex *may* be @@ -57,11 +58,11 @@ to_range_manager(struct ttm_resource_manager *man) static int ttm_range_man_alloc(struct ttm_resource_manager *man, struct ttm_buffer_object *bo, const struct ttm_place *place, - struct ttm_resource *mem) + struct ttm_resource **res) { struct ttm_range_manager *rman = to_range_manager(man); + struct ttm_range_mgr_node *node; struct drm_mm *mm = &rman->mm; - struct drm_mm_node *node; enum drm_mm_insert_mode mode; unsigned long lpfn; int ret; @@ -70,7 +71,7 @@ static int ttm_range_man_alloc(struct ttm_resource_manager *man, if (!lpfn) lpfn = man->size; - node = kzalloc(sizeof(*node), GFP_KERNEL); + node = kzalloc(struct_size(node, mm_nodes, 1), GFP_KERNEL); if (!node) return -ENOMEM; @@ -78,35 +79,36 @@ static int ttm_range_man_alloc(struct ttm_resource_manager *man, if (place->flags & TTM_PL_FLAG_TOPDOWN) mode = DRM_MM_INSERT_HIGH; + ttm_resource_init(bo, place, &node->base); + spin_lock(&rman->lock); - ret = drm_mm_insert_node_in_range(mm, node, mem->num_pages, + ret = drm_mm_insert_node_in_range(mm, &node->mm_nodes[0], + node->base.num_pages, bo->page_alignment, 0, place->fpfn, lpfn, mode); spin_unlock(&rman->lock); if (unlikely(ret)) { kfree(node); - } else { - mem->mm_node = node; - mem->start = node->start; + return ret; } - return ret; + node->base.start = node->mm_nodes[0].start; + *res = &node->base; + return 0; } static void ttm_range_man_free(struct ttm_resource_manager *man, - struct ttm_resource *mem) + struct ttm_resource *res) { + struct ttm_range_mgr_node *node = to_ttm_range_mgr_node(res); struct ttm_range_manager *rman = to_range_manager(man); - if (mem->mm_node) { - spin_lock(&rman->lock); - drm_mm_remove_node(mem->mm_node); - spin_unlock(&rman->lock); + spin_lock(&rman->lock); + drm_mm_remove_node(&node->mm_nodes[0]); + spin_unlock(&rman->lock); - kfree(mem->mm_node); - mem->mm_node = NULL; - } + kfree(node); } static void ttm_range_man_debug(struct ttm_resource_manager *man, @@ -125,6 +127,17 @@ static const struct ttm_resource_manager_func ttm_range_manager_func = { .debug = ttm_range_man_debug }; +/** + * ttm_range_man_init + * + * @bdev: ttm device + * @type: memory manager type + * @use_tt: if the memory manager uses tt + * @p_size: size of area to be managed in pages. + * + * Initialise a generic range manager for the selected memory type. + * The range manager is installed for this device in the type slot. + */ int ttm_range_man_init(struct ttm_device *bdev, unsigned type, bool use_tt, unsigned long p_size) @@ -152,6 +165,14 @@ int ttm_range_man_init(struct ttm_device *bdev, } EXPORT_SYMBOL(ttm_range_man_init); +/** + * ttm_range_man_fini + * + * @bdev: ttm device + * @type: memory manager type + * + * Remove the generic range manager from a slot and tear it down. + */ int ttm_range_man_fini(struct ttm_device *bdev, unsigned type) { |