drm/vmwgfx: Add a new enum for SM5 graphics context capability

A new enum to represent new SM5 graphics context capability in vmwgfx.

v2: use new correct cap bits (merged several later commits into it).
Signed-off-by: Deepak Rawat <drawat.floss@gmail.com>
Signed-off-by: Thomas Hellström (VMware) <thomas_os@shipmail.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

@@ -290,6 +290,8 @@ static void vmw_print_capabilities2(uint32_t capabilities2)
 		DRM_INFO("  Grow oTable.\n");
 	if (capabilities2 & SVGA_CAP2_INTRA_SURFACE_COPY)
 		DRM_INFO("  IntraSurface copy.\n");
+	if (capabilities2 & SVGA_CAP2_DX3)
+		DRM_INFO("  DX3.\n");
 }
 
 static void vmw_print_capabilities(uint32_t capabilities)
@@ -900,6 +902,13 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 
 		if (vmw_read(dev_priv, SVGA_REG_DEV_CAP))
 			dev_priv->sm_type = VMW_SM_4_1;
+
+		if (has_sm4_1_context(dev_priv) &&
+		    (dev_priv->capabilities2 & SVGA_CAP2_DX3)) {
+			vmw_write(dev_priv, SVGA_REG_DEV_CAP, SVGA3D_DEVCAP_SM5);
+			if (vmw_read(dev_priv, SVGA_REG_DEV_CAP))
+				dev_priv->sm_type = VMW_SM_5;
+		}
 	}
 
 	ret = vmw_kms_init(dev_priv);
@@ -913,6 +922,8 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 
 	DRM_INFO("Atomic: %s\n", (dev->driver->driver_features & DRIVER_ATOMIC)
 		 ? "yes." : "no.");
+	if (dev_priv->sm_type == VMW_SM_5)
+		DRM_INFO("SM5 support available.\n");
 	if (dev_priv->sm_type == VMW_SM_4_1)
 		DRM_INFO("SM4_1 support available.\n");
 	if (dev_priv->sm_type == VMW_SM_4)

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

@@ -446,12 +446,14 @@ enum {
  * @VMW_SM_LEGACY: Pre DX context.
  * @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_MAX: Should be the last.
  */
 enum vmw_sm_type {
 	VMW_SM_LEGACY = 0,
 	VMW_SM_4,
 	VMW_SM_4_1,
+	VMW_SM_5,
 	VMW_SM_MAX
 };
 
@@ -684,6 +686,17 @@ static inline bool has_sm4_1_context(const struct vmw_private *dev_priv)
 	return (dev_priv->sm_type >= VMW_SM_4_1);
 }
 
+/**
+ * has_sm5_context - Does the device support SM5 context.
+ * @dev_priv: Device private.
+ *
+ * Return: Bool value if device support SM5 context or not.
+ */
+static inline bool has_sm5_context(const struct vmw_private *dev_priv)
+{
+	return (dev_priv->sm_type >= VMW_SM_5);
+}
+
 extern void vmw_svga_enable(struct vmw_private *dev_priv);
 extern void vmw_svga_disable(struct vmw_private *dev_priv);