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drm/ttm: revert "stop allocating a dummy resource for pipelined gutting" 

This reverts commit 4110872b81.

This still seems to break i915.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230125155023.105584-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2023-01-25 16:48:36 +01:00
parent 2847a67d3a
commit fc1137070b
1 changed files with 13 additions and 2 deletions
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15
drivers/gpu/drm/ttm/ttm_bo_util.c
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@ -704,23 +704,30 @@ EXPORT_SYMBOL(ttm_bo_move_sync_cleanup);
*/
int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo)
{
static const struct ttm_place sys_mem = { .mem_type = TTM_PL_SYSTEM };
struct ttm_buffer_object *ghost;
struct ttm_resource *sys_res;
struct ttm_tt *ttm;
int ret;
ret = ttm_resource_alloc(bo, &sys_mem, &sys_res);
if (ret)
return ret;
/* If already idle, no need for ghost object dance. */
if (dma_resv_test_signaled(bo->base.resv, DMA_RESV_USAGE_BOOKKEEP)) {
if (!bo->ttm) {
/* See comment below about clearing. */
ret = ttm_tt_create(bo, true);
if (ret)
return ret;
goto error_free_sys_mem;
} else {
ttm_tt_unpopulate(bo->bdev, bo->ttm);
if (bo->type == ttm_bo_type_device)
ttm_tt_mark_for_clear(bo->ttm);
}
ttm_resource_free(bo, &bo->resource);
ttm_bo_assign_mem(bo, sys_res);
return 0;
}
@ -737,7 +744,7 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo)
ret = ttm_tt_create(bo, true);
swap(bo->ttm, ttm);
if (ret)
return ret;
goto error_free_sys_mem;
ret = ttm_buffer_object_transfer(bo, &ghost);
if (ret)
@ -753,9 +760,13 @@ int ttm_bo_pipeline_gutting(struct ttm_buffer_object *bo)
dma_resv_unlock(&ghost->base._resv);
ttm_bo_put(ghost);
bo->ttm = ttm;
ttm_bo_assign_mem(bo, sys_res);
return 0;
error_destroy_tt:
ttm_tt_destroy(bo->bdev, ttm);
error_free_sys_mem:
ttm_resource_free(bo, &sys_res);
return ret;
}