diff options
author | Thomas Hellstrom <thellstrom@vmware.com> | 2011-10-10 12:23:27 +0200 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2011-10-10 15:47:19 +0100 |
commit | 5438ae88d098c086cfb94be5327c49a04fc6bfd7 (patch) | |
tree | 7ab7c17c9efe7b4c7f1dd02b45fed4296ef19ced /drivers | |
parent | 57c5ee79acba9582762c09c269e0e2ae1adf1b31 (diff) |
vmwgfx: Wrap drm_read and drm_poll
Make sure the device is processing the fifo when these functions are
called in case they might sleep waiting for an event.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 4 | ||||
-rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c | 43 |
3 files changed, 49 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 5e1994a8ffc..e07dcf40a3b 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -1085,7 +1085,8 @@ static struct drm_driver driver = { .release = drm_release, .unlocked_ioctl = vmw_unlocked_ioctl, .mmap = vmw_mmap, - .poll = drm_poll, + .poll = vmw_fops_poll, + .read = vmw_fops_read, .fasync = drm_fasync, #if defined(CONFIG_COMPAT) .compat_ioctl = drm_compat_ioctl, diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h index 83b2563e684..0e9b2cefaa9 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h @@ -469,6 +469,10 @@ extern int vmw_present_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int vmw_present_readback_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern unsigned int vmw_fops_poll(struct file *filp, + struct poll_table_struct *wait); +extern ssize_t vmw_fops_read(struct file *filp, char __user *buffer, + size_t count, loff_t *offset); /** * Fifo utilities - vmwgfx_fifo.c diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c index c0284a4784c..97f23abeacd 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c @@ -282,3 +282,46 @@ out_no_copy: out_clips: return ret; } + + +/** + * vmw_fops_poll - wrapper around the drm_poll function + * + * @filp: See the linux fops poll documentation. + * @wait: See the linux fops poll documentation. + * + * Wrapper around the drm_poll function that makes sure the device is + * processing the fifo if drm_poll decides to wait. + */ +unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) +{ + struct drm_file *file_priv = filp->private_data; + struct vmw_private *dev_priv = + vmw_priv(file_priv->minor->dev); + + vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); + return drm_poll(filp, wait); +} + + +/** + * vmw_fops_read - wrapper around the drm_read function + * + * @filp: See the linux fops read documentation. + * @buffer: See the linux fops read documentation. + * @count: See the linux fops read documentation. + * offset: See the linux fops read documentation. + * + * Wrapper around the drm_read function that makes sure the device is + * processing the fifo if drm_read decides to wait. + */ +ssize_t vmw_fops_read(struct file *filp, char __user *buffer, + size_t count, loff_t *offset) +{ + struct drm_file *file_priv = filp->private_data; + struct vmw_private *dev_priv = + vmw_priv(file_priv->minor->dev); + + vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); + return drm_read(filp, buffer, count, offset); +} |