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drm/ttm: provide a driver-led init path for range mm manager. (v2) 

This lets the generic range mm manager be initialised by the driver.

v2: add docs.
rename api to range_man_init for now.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-15-airlied@gmail.com
This commit is contained in:
Dave Airlie 2020-08-04 12:55:47 +10:00
parent 747074bb04
commit 3c90424bd7
2 changed files with 34 additions and 3 deletions
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23
drivers/gpu/drm/ttm/ttm_bo_manager.c
View File

@ -104,8 +104,8 @@ static void ttm_bo_man_put_node(struct ttm_mem_type_manager *man,
}
}
static int ttm_bo_man_init(struct ttm_mem_type_manager *man,
unsigned long p_size)
static int ttm_bo_man_init_private(struct ttm_mem_type_manager *man,
unsigned long p_size)
{
struct ttm_range_manager *rman;
@ -119,6 +119,23 @@ static int ttm_bo_man_init(struct ttm_mem_type_manager *man,
return 0;
}
int ttm_range_man_init(struct ttm_bo_device *bdev,
struct ttm_mem_type_manager *man,
unsigned long p_size)
{
int ret;
man->func = &ttm_bo_manager_func;
ttm_mem_type_manager_init(bdev, man, p_size);
ret = ttm_bo_man_init_private(man, p_size);
if (ret)
return ret;
ttm_mem_type_manager_set_used(man, true);
return 0;
}
EXPORT_SYMBOL(ttm_range_man_init);
static int ttm_bo_man_takedown(struct ttm_mem_type_manager *man)
{
struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
@ -147,7 +164,7 @@ static void ttm_bo_man_debug(struct ttm_mem_type_manager *man,
}
const struct ttm_mem_type_manager_func ttm_bo_manager_func = {
.init = ttm_bo_man_init,
.init = ttm_bo_man_init_private,
.takedown = ttm_bo_man_takedown,
.get_node = ttm_bo_man_get_node,
.put_node = ttm_bo_man_put_node,

14
include/drm/ttm/ttm_bo_driver.h
View File

@ -819,6 +819,20 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo);
*/
pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp);
/**
* ttm_range_man_init
*
* @bdev: ttm device
* @man: the manager to initialise with the range manager.
* @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_bo_device *bdev,
struct ttm_mem_type_manager *man,
unsigned long p_size);
extern const struct ttm_mem_type_manager_func ttm_bo_manager_func;
/**