/**
* vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed
* framebuffer and the screen target system.
*
* @dev_priv: Pointer to the device private structure.
* @file_priv: Pointer to a struct drm-file identifying the caller. May be
* set to NULL, but then @user_fence_rep must also be set to NULL.
* @vfb: Pointer to the dma-buffer backed framebuffer.
* @clips: Array of clip rects. Either @clips or @vclips must be NULL.
* @vclips: Alternate array of clip rects. Either @clips or @vclips must
* be NULL.
* @num_clips: Number of clip rects in @clips or @vclips.
* @increment: Increment to use when looping over @clips or @vclips.
* @to_surface: Whether to DMA to the screen target system as opposed to
* from the screen target system.
* @interruptible: Whether to perform waits interruptible if possible.
*
* If DMA-ing till the screen target system, the function will also notify
* the screen target system that a bounding box of the cliprects has been
* updated.
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
struct drm_vmw_fence_rep __user *user_fence_rep,
struct drm_clip_rect *clips,
struct drm_vmw_rect *vclips,
uint32_t num_clips,
int increment,
bool to_surface,
bool interruptible)
{
struct vmw_dma_buffer *buf =
container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
struct vmw_stdu_dirty ddirty;
int ret;
ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
false);
if (ret)
return ret;
ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
SVGA3D_READ_HOST_VRAM;
ddirty.left = ddirty.top = S32_MAX;
ddirty.right = ddirty.bottom = S32_MIN;
ddirty.pitch = vfb->base.pitches[0];
ddirty.buf = buf;
ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit;
ddirty.base.clip = vmw_stdu_dmabuf_clip;
ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
num_clips * sizeof(SVGA3dCopyBox) +
sizeof(SVGA3dCmdSurfaceDMASuffix);
if (to_surface)
ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
0, 0, num_clips, increment, &ddirty.base);
vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
user_fence_rep);
return ret;
}
/**
* vmw_kms_do_bo_dirty - Dirty part of a buffer-object backed framebuffer
*
* @dev_priv: Pointer to the device private structure.
* @framebuffer: Pointer to the buffer-object backed framebuffer.
* @clips: Array of clip rects.
* @vclips: Alternate array of clip rects. Either @clips or @vclips must
* be NULL.
* @num_clips: Number of clip rects in @clips.
* @increment: Increment to use when looping over @clips.
* @interruptible: Whether to perform waits interruptible if possible.
* @out_fence: If non-NULL, will return a ref-counted pointer to a
* struct vmw_fence_obj. The returned fence pointer may be NULL in which
* case the device has already synchronized.
* @crtc: If crtc is passed, perform bo dirty on that crtc only.
*
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_sou_do_bo_dirty(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer,
struct drm_clip_rect *clips,
struct drm_vmw_rect *vclips,
unsigned num_clips, int increment,
bool interruptible,
struct vmw_fence_obj **out_fence,
struct drm_crtc *crtc)
{
struct vmw_buffer_object *buf =
container_of(framebuffer, struct vmw_framebuffer_bo,
base)->buffer;
struct vmw_kms_dirty dirty;
int ret;
ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
false, false);
if (ret)
return ret;
ret = do_bo_define_gmrfb(dev_priv, framebuffer);
if (unlikely(ret != 0))
goto out_revert;
dirty.crtc = crtc;
dirty.fifo_commit = vmw_sou_bo_fifo_commit;
dirty.clip = vmw_sou_bo_clip;
dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_bo_blit) *
num_clips;
ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
0, 0, num_clips, increment, &dirty);
vmw_kms_helper_buffer_finish(dev_priv, NULL, buf, out_fence, NULL);
return ret;
out_revert:
vmw_kms_helper_buffer_revert(buf);
return ret;
}
/**
* vmw_kms_sou_readback - Perform a readback from the screen object system to
* a buffer-object backed framebuffer.
*
* @dev_priv: Pointer to the device private structure.
* @file_priv: Pointer to a struct drm_file identifying the caller.
* Must be set to NULL if @user_fence_rep is NULL.
* @vfb: Pointer to the buffer-object backed framebuffer.
* @user_fence_rep: User-space provided structure for fence information.
* Must be set to non-NULL if @file_priv is non-NULL.
* @vclips: Array of clip rects.
* @num_clips: Number of clip rects in @vclips.
* @crtc: If crtc is passed, readback on that crtc only.
*
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_sou_readback(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
struct drm_vmw_fence_rep __user *user_fence_rep,
struct drm_vmw_rect *vclips,
uint32_t num_clips,
struct drm_crtc *crtc)
{
struct vmw_buffer_object *buf =
container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
struct vmw_kms_dirty dirty;
int ret;
ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, true, false,
false);
if (ret)
return ret;
ret = do_bo_define_gmrfb(dev_priv, vfb);
if (unlikely(ret != 0))
goto out_revert;
dirty.crtc = crtc;
dirty.fifo_commit = vmw_sou_readback_fifo_commit;
dirty.clip = vmw_sou_readback_clip;
dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) *
num_clips;
ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips,
0, 0, num_clips, 1, &dirty);
vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
user_fence_rep);
return ret;
out_revert:
vmw_kms_helper_buffer_revert(buf);
return ret;
}
