[PATCH] drm/xe/pf: Program LMTT directory pointer on all GTs within a tile

[Piórkowski, Piotr]

From: Piotr Piórkowski <piotr.piorkowski at intel.com>

Previously, the LMTT directory pointer was only programmed for primary GT
within a tile. However, to ensure correct Local Memory access by VFs,
the LMTT configuration must be programmed on all GTs within the tile.
Lets program the LMTT directory pointer on every GT of the tile
to guarantee proper LMEM access across all GTs on VFs.

bspec: 67468
hsdes: 18042797646

Signed-off-by: Piotr Piórkowski <piotr.piorkowski at intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Cc: Michał Winiarski <michal.winiarski at intel.com>
---
 drivers/gpu/drm/xe/xe_lmtt.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_lmtt.c b/drivers/gpu/drm/xe/xe_lmtt.c
index a2000307d5bf..a78c9d474a6e 100644
--- a/drivers/gpu/drm/xe/xe_lmtt.c
+++ b/drivers/gpu/drm/xe/xe_lmtt.c
@@ -195,14 +195,17 @@ static void lmtt_setup_dir_ptr(struct xe_lmtt *lmtt)
 	struct xe_tile *tile = lmtt_to_tile(lmtt);
 	struct xe_device *xe = tile_to_xe(tile);
 	dma_addr_t offset = xe_bo_main_addr(lmtt->pd->bo, XE_PAGE_SIZE);
+	struct xe_gt *gt;
+	u8 id;
 
 	lmtt_debug(lmtt, "DIR offset %pad\n", &offset);
 	lmtt_assert(lmtt, xe_bo_is_vram(lmtt->pd->bo));
 	lmtt_assert(lmtt, IS_ALIGNED(offset, SZ_64K));
 
-	xe_mmio_write32(&tile->mmio,
-			GRAPHICS_VER(xe) >= 20 ? XE2_LMEM_CFG : LMEM_CFG,
-			LMEM_EN | REG_FIELD_PREP(LMTT_DIR_PTR, offset / SZ_64K));
+	for_each_gt_on_tile(gt, tile, id)
+		xe_mmio_write32(&gt->mmio,
+				GRAPHICS_VER(xe) >= 20 ? XE2_LMEM_CFG : LMEM_CFG,
+				LMEM_EN | REG_FIELD_PREP(LMTT_DIR_PTR, offset / SZ_64K));
 }
 
 /**
-- 
2.34.1