diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c index a8e5445f94e..e6a1eb7ea95 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c @@ -34,6 +34,9 @@ bool vmw_fifo_have_3d(struct vmw_private *dev_priv) __le32 __iomem *fifo_mem = dev_priv->mmio_virt; uint32_t fifo_min, hwversion; + if (!(dev_priv->capabilities & SVGA_CAP_EXTENDED_FIFO)) + return false; + fifo_min = ioread32(fifo_mem + SVGA_FIFO_MIN); if (fifo_min <= SVGA_FIFO_3D_HWVERSION * sizeof(unsigned int)) return false; @@ -48,6 +51,21 @@ bool vmw_fifo_have_3d(struct vmw_private *dev_priv) return true; } +bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv) +{ + __le32 __iomem *fifo_mem = dev_priv->mmio_virt; + uint32_t caps; + + if (!(dev_priv->capabilities & SVGA_CAP_EXTENDED_FIFO)) + return false; + + caps = ioread32(fifo_mem + SVGA_FIFO_CAPABILITIES); + if (caps & SVGA_FIFO_CAP_PITCHLOCK) + return true; + + return false; +} + int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo) { __le32 __iomem *fifo_mem = dev_priv->mmio_virt; |