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drm/vmwgfx: Make fence sequences continous across a VT switch.

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A vt switch in stealth mode would take down the FIFO, and re-
initialize fence sequence numbers. This patch
saves the current state of the fence sequence when the FIFO is
disabled.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Thomas Hellstrom 2010-01-13 22:28:38 +01:00 committed by Dave Airlie
parent 50ec3b7c35
commit 7704befbd5
2 changed files with 2 additions and 2 deletions
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1
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
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@ -217,6 +217,7 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
dev_priv->dev = dev;
dev_priv->vmw_chipset = chipset;
dev_priv->last_read_sequence = (uint32_t) -100;
mutex_init(&dev_priv->hw_mutex);
mutex_init(&dev_priv->cmdbuf_mutex);
rwlock_init(&dev_priv->resource_lock);

3
drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
View file

@ -98,8 +98,7 @@ int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
(unsigned int) min,
(unsigned int) fifo->capabilities);
dev_priv->fence_seq = (uint32_t) -100;
dev_priv->last_read_sequence = (uint32_t) -100;
dev_priv->fence_seq = dev_priv->last_read_sequence;
iowrite32(dev_priv->last_read_sequence, fifo_mem + SVGA_FIFO_FENCE);
return vmw_fifo_send_fence(dev_priv, &dummy);