vmwgfx: Add fence events
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>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index 62d6377..03bbc2a 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -247,9 +247,8 @@
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 @@
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);