On 19.1.2024 13.48, Jani Nikula wrote:
On Thu, 18 Jan 2024, Juha-Pekka Heikkila <juhapekka.heikkila@xxxxxxxxx> wrote:
Display engine support ccs only with tile4, prevent other modifiers
from using compressed memory.
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@xxxxxxxxx>
---
drivers/gpu/drm/xe/display/xe_fb_pin.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/xe/display/xe_fb_pin.c b/drivers/gpu/drm/xe/display/xe_fb_pin.c
index 722c84a56607..579badb8c69e 100644
--- a/drivers/gpu/drm/xe/display/xe_fb_pin.c
+++ b/drivers/gpu/drm/xe/display/xe_fb_pin.c
@@ -13,6 +13,16 @@
#include <drm/ttm/ttm_bo.h>
+static bool is_compressed(const struct drm_framebuffer *fb)
+{
+ struct xe_bo *bo = intel_fb_obj(fb);
+ struct xe_device *xe = to_xe_device(to_intel_framebuffer(fb)->base.dev);
+ struct xe_ggtt *ggtt = xe_device_get_root_tile(xe)->mem.ggtt;
+ u16 pat_index_compressed = tile_to_xe(ggtt->tile)->pat.idx[XE_CACHE_WT];
+
+ return (bo->pat_index == pat_index_compressed);
+}
+
static void
write_dpt_rotated(struct xe_bo *bo, struct iosys_map *map, u32 *dpt_ofs, u32 bo_ofs,
u32 width, u32 height, u32 src_stride, u32 dst_stride)
@@ -349,12 +359,19 @@ void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags)
int intel_plane_pin_fb(struct intel_plane_state *plane_state)
{
struct drm_framebuffer *fb = plane_state->hw.fb;
+ struct xe_device *xe = to_xe_device(to_intel_framebuffer(fb)->base.dev);
struct xe_bo *bo = intel_fb_obj(fb);
struct i915_vma *vma;
/* We reject creating !SCANOUT fb's, so this is weird.. */
drm_WARN_ON(bo->ttm.base.dev, !(bo->flags & XE_BO_SCANOUT_BIT));
+ if (GRAPHICS_VER(xe) >= 20 && fb->modifier != I915_FORMAT_MOD_4_TILED &&
Is GRAPHICS_VER correct or should that be a DISPLAY_VER instead?
I think GRAPHICS_VER is correct here because this depend if base ccs
functionality is there which doesn't relate to display version.
+ is_compressed(fb)) {
+ drm_warn(&xe->drm, "Cannot create ccs framebuffer with other than tile4 mofifier\n");
+ return -EINVAL;
+ }
+
vma = __xe_pin_fb_vma(to_intel_framebuffer(fb), &plane_state->view.gtt);
if (IS_ERR(vma))
return PTR_ERR(vma);
