drm/vmwgfx: support 64 UAVs

If the host supports SVGA3D_DEVCAP_GL43, we can handle 64 instead of
just 8 UAVs.
Based on a patch from Roland Scheidegger <sroland@vmware.com>.

Signed-off-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206172620.3139754-9-zack@kde.org

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index daa4501d17ec..21dd69e5cdfb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -488,6 +488,7 @@ enum {
  * @VMW_SM_4: Context support upto SM4.
  * @VMW_SM_4_1: Context support upto SM4_1.
  * @VMW_SM_5: Context support up to SM5.
+ * @VMW_SM_5_1X: Adds support for sm5_1 and gl43 extensions.
  * @VMW_SM_MAX: Should be the last.
  */
 enum vmw_sm_type {
@@ -495,6 +496,7 @@ enum vmw_sm_type {
 	VMW_SM_4,
 	VMW_SM_4_1,
 	VMW_SM_5,
+	VMW_SM_5_1X,
 	VMW_SM_MAX
 };
 
@@ -755,6 +757,24 @@ static inline bool has_sm5_context(const struct vmw_private *dev_priv)
 	return (dev_priv->sm_type >= VMW_SM_5);
 }
 
+/**
+ * has_gl43_context - Does the device support GL43 context.
+ * @dev_priv: Device private.
+ *
+ * Return: Bool value if device support SM5 context or not.
+ */
+static inline bool has_gl43_context(const struct vmw_private *dev_priv)
+{
+	return (dev_priv->sm_type >= VMW_SM_5_1X);
+}
+
+
+static inline u32 vmw_max_num_uavs(struct vmw_private *dev_priv)
+{
+	return (has_gl43_context(dev_priv) ?
+			SVGA3D_DX11_1_MAX_UAVIEWS : SVGA3D_MAX_UAVIEWS);
+}
+
 extern void vmw_svga_enable(struct vmw_private *dev_priv);
 extern void vmw_svga_disable(struct vmw_private *dev_priv);