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vmwgfx: Add fence events

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Add a way to send DRM events down the gpu fifo by attaching them to
fence objects. This may be useful for Xserver swapbuffer throttling and
page-flip done notifications.

Bump version to 2.2 to signal the availability of the FENCE_EVENT ioctl.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Thomas Hellstrom
2011-10-10 12:23:26 +02:00
committed by Dave Airlie
parent 8bf445cee3
commit 57c5ee79ac
8 changed files with 644 additions and 49 deletions
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10
drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
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@@ -247,9 +247,8 @@ static int vmw_fifo_wait(struct vmw_private *dev_priv,
spin_lock_irqsave(&dev_priv->irq_lock, irq_flags);
outl(SVGA_IRQFLAG_FIFO_PROGRESS,
dev_priv->io_start + VMWGFX_IRQSTATUS_PORT);
vmw_write(dev_priv, SVGA_REG_IRQMASK,
vmw_read(dev_priv, SVGA_REG_IRQMASK) |
SVGA_IRQFLAG_FIFO_PROGRESS);
dev_priv->irq_mask |= SVGA_IRQFLAG_FIFO_PROGRESS;
vmw_write(dev_priv, SVGA_REG_IRQMASK, dev_priv->irq_mask);
spin_unlock_irqrestore(&dev_priv->irq_lock, irq_flags);
}
mutex_unlock(&dev_priv->hw_mutex);
@@ -271,9 +270,8 @@ static int vmw_fifo_wait(struct vmw_private *dev_priv,
mutex_lock(&dev_priv->hw_mutex);
if (atomic_dec_and_test(&dev_priv->fifo_queue_waiters)) {
spin_lock_irqsave(&dev_priv->irq_lock, irq_flags);
vmw_write(dev_priv, SVGA_REG_IRQMASK,
vmw_read(dev_priv, SVGA_REG_IRQMASK) &
~SVGA_IRQFLAG_FIFO_PROGRESS);
dev_priv->irq_mask &= ~SVGA_IRQFLAG_FIFO_PROGRESS;
vmw_write(dev_priv, SVGA_REG_IRQMASK, dev_priv->irq_mask);
spin_unlock_irqrestore(&dev_priv->irq_lock, irq_flags);
}
mutex_unlock(&dev_priv->hw_mutex);