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drm/ttm: restructure to allow driver to plug in alternate memory manager

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Nouveau will need this on GeForce 8 and up to account for the GPU
reordering physical VRAM for some memory types.

Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Thomas Hellström <thellstrom@vmware.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs
2010-08-05 10:48:18 +10:00
parent 42311ff90d
commit d961db75ce
18 changed files with 229 additions and 116 deletions
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3
include/drm/ttm/ttm_bo_api.h
View File

@@ -102,7 +102,8 @@ struct ttm_bus_placement {
*/
struct ttm_mem_reg {
struct drm_mm_node *mm_node;
void *mm_node;
unsigned long start;
unsigned long size;
unsigned long num_pages;
uint32_t page_alignment;

21
include/drm/ttm/ttm_bo_driver.h
View File

@@ -203,7 +203,22 @@ struct ttm_tt {
* It's set up by the ttm_bo_driver::init_mem_type method.
*/
struct ttm_mem_type_manager;
struct ttm_mem_type_manager_func {
int (*init)(struct ttm_mem_type_manager *man, unsigned long p_size);
int (*takedown)(struct ttm_mem_type_manager *man);
int (*get_node)(struct ttm_mem_type_manager *man,
struct ttm_buffer_object *bo,
struct ttm_placement *placement,
struct ttm_mem_reg *mem);
void (*put_node)(struct ttm_mem_type_manager *man,
struct ttm_mem_reg *mem);
void (*debug)(struct ttm_mem_type_manager *man, const char *prefix);
};
struct ttm_mem_type_manager {
struct ttm_bo_device *bdev;
/*
* No protection. Constant from start.
@@ -222,8 +237,8 @@ struct ttm_mem_type_manager {
* TODO: Consider one lru_lock per ttm_mem_type_manager.
* Plays ill with list removal, though.
*/
struct drm_mm manager;
const struct ttm_mem_type_manager_func *func;
void *priv;
struct list_head lru;
};
@@ -895,6 +910,8 @@ extern int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
*/
extern pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp);
extern const struct ttm_mem_type_manager_func ttm_bo_manager_func;
#if (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
#define TTM_HAS_AGP
#include <linux/agp_backend.h>