vmwgfx: Add present and readback ioctls
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jakob Bornecrantz
committed by
Dave Airlie
Dave Airlie
parent
44031d25cc
commit
2fcd5a73bf
@@ -27,6 +27,7 @@
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#include "vmwgfx_drv.h"
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#include "vmwgfx_drm.h"
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#include "vmwgfx_kms.h"
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int vmw_getparam_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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@@ -110,3 +111,174 @@ int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
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return ret;
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}
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int vmw_present_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
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struct vmw_private *dev_priv = vmw_priv(dev);
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struct drm_vmw_present_arg *arg =
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(struct drm_vmw_present_arg *)data;
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struct vmw_surface *surface;
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struct vmw_master *vmaster = vmw_master(file_priv->master);
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struct drm_vmw_rect __user *clips_ptr;
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struct drm_vmw_rect *clips = NULL;
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struct drm_mode_object *obj;
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struct vmw_framebuffer *vfb;
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uint32_t num_clips;
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int ret;
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num_clips = arg->num_clips;
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clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
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if (unlikely(num_clips == 0))
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return 0;
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if (clips_ptr == NULL) {
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DRM_ERROR("Variable clips_ptr must be specified.\n");
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ret = -EINVAL;
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goto out_clips;
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}
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clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
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if (clips == NULL) {
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DRM_ERROR("Failed to allocate clip rect list.\n");
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ret = -ENOMEM;
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goto out_clips;
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}
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ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
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if (ret) {
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DRM_ERROR("Failed to copy clip rects from userspace.\n");
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goto out_no_copy;
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}
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ret = mutex_lock_interruptible(&dev->mode_config.mutex);
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if (unlikely(ret != 0)) {
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ret = -ERESTARTSYS;
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goto out_no_mode_mutex;
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}
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obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB);
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if (!obj) {
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DRM_ERROR("Invalid framebuffer id.\n");
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ret = -EINVAL;
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goto out_no_fb;
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}
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vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj));
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if (!vfb->dmabuf) {
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DRM_ERROR("Framebuffer not dmabuf backed.\n");
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ret = -EINVAL;
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goto out_no_fb;
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}
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ret = ttm_read_lock(&vmaster->lock, true);
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if (unlikely(ret != 0))
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goto out_no_ttm_lock;
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ret = vmw_user_surface_lookup_handle(dev_priv, tfile, arg->sid,
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&surface);
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if (ret)
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goto out_no_surface;
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ret = vmw_kms_present(dev_priv, file_priv,
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vfb, surface, arg->sid,
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arg->dest_x, arg->dest_y,
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clips, num_clips);
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/* vmw_user_surface_lookup takes one ref so does new_fb */
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vmw_surface_unreference(&surface);
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out_no_surface:
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ttm_read_unlock(&vmaster->lock);
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out_no_ttm_lock:
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out_no_fb:
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mutex_unlock(&dev->mode_config.mutex);
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out_no_mode_mutex:
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out_no_copy:
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kfree(clips);
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out_clips:
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return ret;
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}
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int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct vmw_private *dev_priv = vmw_priv(dev);
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struct drm_vmw_present_readback_arg *arg =
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(struct drm_vmw_present_readback_arg *)data;
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struct drm_vmw_fence_rep __user *user_fence_rep =
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(struct drm_vmw_fence_rep __user *)
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(unsigned long)arg->fence_rep;
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struct vmw_master *vmaster = vmw_master(file_priv->master);
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struct drm_vmw_rect __user *clips_ptr;
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struct drm_vmw_rect *clips = NULL;
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struct drm_mode_object *obj;
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struct vmw_framebuffer *vfb;
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uint32_t num_clips;
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int ret;
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num_clips = arg->num_clips;
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clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
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if (unlikely(num_clips == 0))
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return 0;
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if (clips_ptr == NULL) {
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DRM_ERROR("Argument clips_ptr must be specified.\n");
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ret = -EINVAL;
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goto out_clips;
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}
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clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
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if (clips == NULL) {
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DRM_ERROR("Failed to allocate clip rect list.\n");
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ret = -ENOMEM;
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goto out_clips;
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}
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ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
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if (ret) {
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DRM_ERROR("Failed to copy clip rects from userspace.\n");
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goto out_no_copy;
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}
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ret = mutex_lock_interruptible(&dev->mode_config.mutex);
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if (unlikely(ret != 0)) {
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ret = -ERESTARTSYS;
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goto out_no_mode_mutex;
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}
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obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB);
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if (!obj) {
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DRM_ERROR("Invalid framebuffer id.\n");
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ret = -EINVAL;
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goto out_no_fb;
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}
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vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj));
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if (!vfb->dmabuf) {
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DRM_ERROR("Framebuffer not dmabuf backed.\n");
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ret = -EINVAL;
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goto out_no_fb;
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}
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ret = ttm_read_lock(&vmaster->lock, true);
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if (unlikely(ret != 0))
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goto out_no_ttm_lock;
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ret = vmw_kms_readback(dev_priv, file_priv,
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vfb, user_fence_rep,
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clips, num_clips);
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ttm_read_unlock(&vmaster->lock);
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out_no_ttm_lock:
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out_no_fb:
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mutex_unlock(&dev->mode_config.mutex);
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out_no_mode_mutex:
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out_no_copy:
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kfree(clips);
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out_clips:
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return ret;
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}
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