Re: [PATCH 3/7] drm/vmwgfx: don't use ttm bo->offset

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Am 17.02.20 um 11:18 schrieb Nirmoy Das:
Calculate GPU offset within vmwgfx driver itself without depending on
bo->offset

Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxx>
---
  drivers/gpu/drm/vmwgfx/vmwgfx_bo.c         | 4 ++--
  drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c    | 2 +-
  drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c       | 2 +-
  drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c | 2 --
  4 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
index 8b71bf6b58ef..a714582bb61c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
@@ -258,7 +258,7 @@ int vmw_bo_pin_in_start_of_vram(struct vmw_private *dev_priv,
  		ret = ttm_bo_validate(bo, &placement, &ctx);
/* For some reason we didn't end up at the start of vram */
-	WARN_ON(ret == 0 && bo->offset != 0);
+	WARN_ON(ret == 0 && (bo->mem.start << PAGE_SHIFT) != 0);

You could drop the (<< PAGE_SHIFT) part here.

Apart from that feel free to stick an Acked-by: Christian König <christian.koenig@xxxxxxx> on the patch.

Christian.

  	if (!ret)
  		vmw_bo_pin_reserved(buf, true);
@@ -317,7 +317,7 @@ void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *bo,
  {
  	if (bo->mem.mem_type == TTM_PL_VRAM) {
  		ptr->gmrId = SVGA_GMR_FRAMEBUFFER;
-		ptr->offset = bo->offset;
+		ptr->offset = bo->mem.start << PAGE_SHIFT;
  	} else {
  		ptr->gmrId = bo->mem.start;
  		ptr->offset = 0;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 73489a45decb..72c2cf4053df 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -3313,7 +3313,7 @@ static void vmw_apply_relocations(struct vmw_sw_context *sw_context)
  		bo = &reloc->vbo->base;
  		switch (bo->mem.mem_type) {
  		case TTM_PL_VRAM:
-			reloc->location->offset += bo->offset;
+			reloc->location->offset += bo->mem.start << PAGE_SHIFT;
  			reloc->location->gmrId = SVGA_GMR_FRAMEBUFFER;
  			break;
  		case VMW_PL_GMR:
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index e5252ef3812f..1cdc445b24c3 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -612,7 +612,7 @@ static int vmw_fifo_emit_dummy_legacy_query(struct vmw_private *dev_priv,
if (bo->mem.mem_type == TTM_PL_VRAM) {
  		cmd->body.guestResult.gmrId = SVGA_GMR_FRAMEBUFFER;
-		cmd->body.guestResult.offset = bo->offset;
+		cmd->body.guestResult.offset = bo->mem.start << PAGE_SHIFT;
  	} else {
  		cmd->body.guestResult.gmrId = bo->mem.start;
  		cmd->body.guestResult.offset = 0;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
index 3f3b2c7a208a..e7134aebeb81 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c
@@ -750,7 +750,6 @@ static int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
  	case TTM_PL_VRAM:
  		/* "On-card" video ram */
  		man->func = &ttm_bo_manager_func;
-		man->gpu_offset = 0;
  		man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE;
  		man->available_caching = TTM_PL_FLAG_CACHED;
  		man->default_caching = TTM_PL_FLAG_CACHED;
@@ -763,7 +762,6 @@ static int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
  		 *  slots as well as the bo size.
  		 */
  		man->func = &vmw_gmrid_manager_func;
-		man->gpu_offset = 0;
  		man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE;
  		man->available_caching = TTM_PL_FLAG_CACHED;
  		man->default_caching = TTM_PL_FLAG_CACHED;

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