diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c index 6ccd993e26bf..09e10aefcd8e 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c @@ -160,16 +160,21 @@ int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo) return vmw_fifo_send_fence(dev_priv, &dummy); } -void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason) +void vmw_fifo_ping_host_locked(struct vmw_private *dev_priv, uint32_t reason) { __le32 __iomem *fifo_mem = dev_priv->mmio_virt; - mutex_lock(&dev_priv->hw_mutex); - if (unlikely(ioread32(fifo_mem + SVGA_FIFO_BUSY) == 0)) { iowrite32(1, fifo_mem + SVGA_FIFO_BUSY); vmw_write(dev_priv, SVGA_REG_SYNC, reason); } +} + +void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason) +{ + mutex_lock(&dev_priv->hw_mutex); + + vmw_fifo_ping_host_locked(dev_priv, reason); mutex_unlock(&dev_priv->hw_mutex); } @@ -180,8 +185,9 @@ void vmw_fifo_release(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo) mutex_lock(&dev_priv->hw_mutex); + vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC); while (vmw_read(dev_priv, SVGA_REG_BUSY) != 0) - vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC); + ; dev_priv->last_read_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE); |