drm/vmwgfx: Correctly detect 3D

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 23 insertions, 1 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index dedd121d8fe7..f47ff2c05466 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -357,6 +357,8 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
         dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
         register_pm_notifier(&dev_priv->pm_nb);
 
+        DRM_INFO("%s", vmw_fifo_have_3d(dev_priv) ? "Have 3D\n" : "No 3D\n");
+
         return 0;
 
 out_no_device:
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 50529a7f06fb..59acc51993f6 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -389,6 +389,7 @@ extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
                                uint32_t *sequence);
 extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
 extern int vmw_fifo_mmap(struct file *filp, struct vm_area_struct *vma);
+extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
 
 /**
  * TTM glue - vmwgfx_ttm_glue.c
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index f7d5f70b52dd..4157547cc6e4 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -29,6 +29,25 @@
 #include "drmP.h"
 #include "ttm/ttm_placement.h"
 
+bool vmw_fifo_have_3d(struct vmw_private *dev_priv)
+{
+        __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+        uint32_t fifo_min, hwversion;
+
+        fifo_min = ioread32(fifo_mem  + SVGA_FIFO_MIN);
+        if (fifo_min <= SVGA_FIFO_3D_HWVERSION * sizeof(unsigned int))
+                return false;
+
+        hwversion = ioread32(fifo_mem + SVGA_FIFO_3D_HWVERSION);
+        if (hwversion == 0)
+                return false;
+
+        if (hwversion < SVGA3D_HWVERSION_WS65_B1)
+                return false;
+
+        return true;
+}
+
 int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
 {
         __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index 5fa6a4ed238a..778851f9f1d6 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -43,7 +43,7 @@ int vmw_getparam_ioctl(struct drm_device *dev, void *data,
                 param->value = vmw_overlay_num_free_overlays(dev_priv);
                 break;
         case DRM_VMW_PARAM_3D:
-                param->value = dev_priv->capabilities & SVGA_CAP_3D ? 1 : 0;
+                param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
                 break;
         case DRM_VMW_PARAM_FIFO_OFFSET:
                 param->value = dev_priv->mmio_start;