diff options
author | Matthew Auld <matthew.auld@intel.com> | 2023-03-21 14:44:07 +0300 |
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committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-20 02:30:20 +0300 |
commit | ce79c6c43af7280c1f26d700959d04a7e62092af (patch) | |
tree | e16ef8b7ed2338ee9f2d797871a3858ae2a73d19 /drivers/gpu/drm/xe | |
parent | 793e6612deea5cf8117100b1d47754800b24dcfa (diff) | |
download | linux-ce79c6c43af7280c1f26d700959d04a7e62092af.tar.xz |
drm/xe/buddy: add compatible and intersects hooks
Copy this from i915. We need .compatible for vram -> vram transfers, so
they don't just get nooped by ttm, if need to move something from
mappable to non-mappble or vice versa. The .intersects is needed for
eviction, to determine if a victim resource is worth eviction. e.g if we
need mappable space there is no point in evicting a resource that has
zero mappable pages.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe')
-rw-r--r-- | drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c index 78979c0b6024..73836b9b7fed 100644 --- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c +++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c @@ -242,9 +242,71 @@ static void xe_ttm_vram_mgr_debug(struct ttm_resource_manager *man, drm_printf(printer, "man size:%llu\n", man->size); } +static bool xe_ttm_vram_mgr_intersects(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man); + struct xe_ttm_vram_mgr_resource *vres = + to_xe_ttm_vram_mgr_resource(res); + struct drm_buddy *mm = &mgr->mm; + struct drm_buddy_block *block; + + if (!place->fpfn && !place->lpfn) + return true; + + if (!place->fpfn && place->lpfn == mgr->visible_size >> PAGE_SHIFT) + return vres->used_visible_size > 0; + + list_for_each_entry(block, &vres->blocks, link) { + unsigned long fpfn = + drm_buddy_block_offset(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (drm_buddy_block_size(mm, block) >> PAGE_SHIFT); + + if (place->fpfn < lpfn && place->lpfn > fpfn) + return true; + } + + return false; +} + +static bool xe_ttm_vram_mgr_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man); + struct xe_ttm_vram_mgr_resource *vres = + to_xe_ttm_vram_mgr_resource(res); + struct drm_buddy *mm = &mgr->mm; + struct drm_buddy_block *block; + + if (!place->fpfn && !place->lpfn) + return true; + + if (!place->fpfn && place->lpfn == mgr->visible_size >> PAGE_SHIFT) + return vres->used_visible_size == size; + + list_for_each_entry(block, &vres->blocks, link) { + unsigned long fpfn = + drm_buddy_block_offset(block) >> PAGE_SHIFT; + unsigned long lpfn = fpfn + + (drm_buddy_block_size(mm, block) >> PAGE_SHIFT); + + if (fpfn < place->fpfn || lpfn > place->lpfn) + return false; + } + + return true; +} + static const struct ttm_resource_manager_func xe_ttm_vram_mgr_func = { .alloc = xe_ttm_vram_mgr_new, .free = xe_ttm_vram_mgr_del, + .intersects = xe_ttm_vram_mgr_intersects, + .compatible = xe_ttm_vram_mgr_compatible, .debug = xe_ttm_vram_mgr_debug }; |