diff options
| -rw-r--r-- | drivers/gpu/drm/xe/xe_bo.c | 16 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_bo.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pt.c | 3 |
3 files changed, 15 insertions, 5 deletions
diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c index a78ac158e967..4b7678db88f3 100644 --- a/drivers/gpu/drm/xe/xe_bo.c +++ b/drivers/gpu/drm/xe/xe_bo.c @@ -301,6 +301,7 @@ static struct ttm_tt *xe_ttm_tt_create(struct ttm_buffer_object *ttm_bo, struct xe_device *xe = xe_bo_device(bo); struct xe_ttm_tt *tt; unsigned long extra_pages; + enum ttm_caching caching = ttm_cached; int err; tt = kzalloc(sizeof(*tt), GFP_KERNEL); @@ -314,10 +315,17 @@ static struct ttm_tt *xe_ttm_tt_create(struct ttm_buffer_object *ttm_bo, extra_pages = DIV_ROUND_UP(xe_device_ccs_bytes(xe, bo->size), PAGE_SIZE); - /* TODO: Select caching mode */ - err = ttm_tt_init(&tt->ttm, &bo->ttm, page_flags, - bo->flags & XE_BO_SCANOUT_BIT ? ttm_write_combined : ttm_cached, - extra_pages); + /* + * Display scanout is always non-coherent with the CPU cache. + * + * For Xe_LPG and beyond, PPGTT PTE lookups are also non-coherent and + * require a CPU:WC mapping. + */ + if (bo->flags & XE_BO_SCANOUT_BIT || + (xe->info.graphics_verx100 >= 1270 && bo->flags & XE_BO_PAGETABLE)) + caching = ttm_write_combined; + + err = ttm_tt_init(&tt->ttm, &bo->ttm, page_flags, caching, extra_pages); if (err) { kfree(tt); return NULL; diff --git a/drivers/gpu/drm/xe/xe_bo.h b/drivers/gpu/drm/xe/xe_bo.h index 3e98f3c0b85e..12a291925fa9 100644 --- a/drivers/gpu/drm/xe/xe_bo.h +++ b/drivers/gpu/drm/xe/xe_bo.h @@ -40,6 +40,7 @@ #define XE_BO_DEFER_BACKING BIT(9) #define XE_BO_SCANOUT_BIT BIT(10) #define XE_BO_FIXED_PLACEMENT_BIT BIT(11) +#define XE_BO_PAGETABLE BIT(12) /* this one is trigger internally only */ #define XE_BO_INTERNAL_TEST BIT(30) #define XE_BO_INTERNAL_64K BIT(31) diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c index d2df51910010..48a87b50a040 100644 --- a/drivers/gpu/drm/xe/xe_pt.c +++ b/drivers/gpu/drm/xe/xe_pt.c @@ -221,7 +221,8 @@ struct xe_pt *xe_pt_create(struct xe_vm *vm, struct xe_tile *tile, XE_BO_CREATE_VRAM_IF_DGFX(tile) | XE_BO_CREATE_IGNORE_MIN_PAGE_SIZE_BIT | XE_BO_CREATE_PINNED_BIT | - XE_BO_CREATE_NO_RESV_EVICT); + XE_BO_CREATE_NO_RESV_EVICT | + XE_BO_PAGETABLE); if (IS_ERR(bo)) { err = PTR_ERR(bo); goto err_kfree; |