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drm/vmwgfx: Support older hardware.

Browse Source 
V2: Fix a couple of typos.

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jakob Bornecrantz
2010-05-28 11:21:59 +02:00
committed by Dave Airlie
parent 1ae1ddd5e9
commit d7e1958dbe
6 changed files with 148 additions and 107 deletions
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18
drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
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@@ -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;