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drm/ttm: move ttm_tt_create into ttm_tt.c v2 

Rename ttm_bo_add_ttm to ttm_tt_create and move it into ttm_tt.c.

v2: separate the cleanup.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-02-22 08:54:57 +01:00 committed by Alex Deucher
parent ec3fe391bd
commit 97b7e1b8b5
3 changed files with 59 additions and 48 deletions
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50
drivers/gpu/drm/ttm/ttm_bo.c
View File

@ -222,52 +222,6 @@ void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo)
}
EXPORT_SYMBOL(ttm_bo_move_to_lru_tail);
/*
* Call bo->mutex locked.
*/
static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
{
struct ttm_bo_device *bdev = bo->bdev;
int ret = 0;
uint32_t page_flags = 0;
reservation_object_assert_held(bo->resv);
bo->ttm = NULL;
if (bdev->need_dma32)
page_flags |= TTM_PAGE_FLAG_DMA32;
if (bdev->no_retry)
page_flags |= TTM_PAGE_FLAG_NO_RETRY;
switch (bo->type) {
case ttm_bo_type_device:
if (zero_alloc)
page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
case ttm_bo_type_kernel:
bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
page_flags);
if (unlikely(bo->ttm == NULL))
ret = -ENOMEM;
break;
case ttm_bo_type_sg:
bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
page_flags | TTM_PAGE_FLAG_SG);
if (unlikely(bo->ttm == NULL)) {
ret = -ENOMEM;
break;
}
bo->ttm->sg = bo->sg;
break;
default:
pr_err("Illegal buffer object type\n");
ret = -EINVAL;
break;
}
return ret;
}
static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
struct ttm_mem_reg *mem, bool evict,
struct ttm_operation_ctx *ctx)
@ -295,7 +249,7 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) {
if (bo->ttm == NULL) {
bool zero = !(old_man->flags & TTM_MEMTYPE_FLAG_FIXED);
ret = ttm_bo_add_ttm(bo, zero);
ret = ttm_tt_create(bo, zero);
if (ret)
goto out_err;
}
@ -1134,7 +1088,7 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
* We might need to add a TTM.
*/
if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
ret = ttm_bo_add_ttm(bo, true);
ret = ttm_tt_create(bo, true);
if (ret)
return ret;
}

46
drivers/gpu/drm/ttm/ttm_tt.c
View File

@ -47,6 +47,52 @@
#include <asm/set_memory.h>
#endif
/**
* Allocates a ttm structure for the given BO.
*/
int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
{
struct ttm_bo_device *bdev = bo->bdev;
int ret = 0;
uint32_t page_flags = 0;
reservation_object_assert_held(bo->resv);
bo->ttm = NULL;
if (bdev->need_dma32)
page_flags |= TTM_PAGE_FLAG_DMA32;
if (bdev->no_retry)
page_flags |= TTM_PAGE_FLAG_NO_RETRY;
switch (bo->type) {
case ttm_bo_type_device:
if (zero_alloc)
page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
case ttm_bo_type_kernel:
bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
page_flags);
if (unlikely(bo->ttm == NULL))
ret = -ENOMEM;
break;
case ttm_bo_type_sg:
bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
page_flags | TTM_PAGE_FLAG_SG);
if (unlikely(bo->ttm == NULL)) {
ret = -ENOMEM;
break;
}
bo->ttm->sg = bo->sg;
break;
default:
pr_err("Illegal buffer object type\n");
ret = -EINVAL;
break;
}
return ret;
}
/**
* Allocates storage for pointers to the pages that back the ttm.
*/

11
include/drm/ttm/ttm_bo_driver.h
View File

@ -610,6 +610,17 @@ ttm_flag_masked(uint32_t *old, uint32_t new, uint32_t mask)
return *old;
}
/**
* ttm_tt_create
*
* @bo: pointer to a struct ttm_buffer_object
* @zero_alloc: true if allocated pages needs to be zeroed
*
* Make sure we have a TTM structure allocated for the given BO.
* No pages are actually allocated.
*/
int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc);
/**
* ttm_tt_init
*