diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c | 19 |
1 files changed, 19 insertions, 0 deletions
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; |