[PATCH AUTOSEL 5.13 001/219] drm/vmwgfx: Fix subresource updates with new contexts

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From: Zack Rusin <zackr@xxxxxxxxxx>

[ Upstream commit a12be0277316ed923411c9c80b2899ee74d2b033 ]

The has_dx variable was only set during the initialization which
meant that UPDATE_SUBRESOURCE was never used. We were emulating it
with UPDATE_GB_IMAGE but that's always been a stop-gap. Instead
of has_dx which has been deprecated a long time ago we need to check
for whether shader model 4.0 or newer is available to the device.

Signed-off-by: Zack Rusin <zackr@xxxxxxxxxx>
Reviewed-by: Roland Scheidegger <sroland@xxxxxxxxxx>
Reviewed-by: Martin Krastev <krastevm@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210609172307.131929-4-zackr@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index beab3e19d8e2..5ff88f8c2382 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -1883,7 +1883,6 @@ static void vmw_surface_dirty_range_add(struct vmw_resource *res, size_t start,
 static int vmw_surface_dirty_sync(struct vmw_resource *res)
 {
 	struct vmw_private *dev_priv = res->dev_priv;
-	bool has_dx = 0;
 	u32 i, num_dirty;
 	struct vmw_surface_dirty *dirty =
 		(struct vmw_surface_dirty *) res->dirty;
@@ -1910,7 +1909,7 @@ static int vmw_surface_dirty_sync(struct vmw_resource *res)
 	if (!num_dirty)
 		goto out;
 
-	alloc_size = num_dirty * ((has_dx) ? sizeof(*cmd1) : sizeof(*cmd2));
+	alloc_size = num_dirty * ((has_sm4_context(dev_priv)) ? sizeof(*cmd1) : sizeof(*cmd2));
 	cmd = VMW_CMD_RESERVE(dev_priv, alloc_size);
 	if (!cmd)
 		return -ENOMEM;
@@ -1928,7 +1927,7 @@ static int vmw_surface_dirty_sync(struct vmw_resource *res)
 		 * DX_UPDATE_SUBRESOURCE is aware of array surfaces.
 		 * UPDATE_GB_IMAGE is not.
 		 */
-		if (has_dx) {
+		if (has_sm4_context(dev_priv)) {
 			cmd1->header.id = SVGA_3D_CMD_DX_UPDATE_SUBRESOURCE;
 			cmd1->header.size = sizeof(cmd1->body);
 			cmd1->body.sid = res->id;
-- 
2.30.2




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