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/*
* Copyright (C) 2015 Red Hat, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "virtgpu_drv.h"
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic_helper.h>
static const uint32_t virtio_gpu_formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_BGRX8888,
DRM_FORMAT_BGRA8888,
DRM_FORMAT_RGBX8888,
DRM_FORMAT_RGBA8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_ABGR8888,
};
static void virtio_gpu_plane_destroy(struct drm_plane *plane)
{
kfree(plane);
}
static const struct drm_plane_funcs virtio_gpu_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = virtio_gpu_plane_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
return 0;
}
static void virtio_gpu_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_device *dev = plane->dev;
struct virtio_gpu_device *vgdev = dev->dev_private;
struct virtio_gpu_output *output = NULL;
struct virtio_gpu_framebuffer *vgfb;
struct virtio_gpu_object *bo;
uint32_t handle;
if (plane->state->crtc)
output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
if (old_state->crtc)
output = drm_crtc_to_virtio_gpu_output(old_state->crtc);
WARN_ON(!output);
if (plane->state->fb) {
vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
bo = gem_to_virtio_gpu_obj(vgfb->obj);
handle = bo->hw_res_handle;
if (bo->dumb) {
virtio_gpu_cmd_transfer_to_host_2d
(vgdev, handle, 0,
cpu_to_le32(plane->state->crtc_w),
cpu_to_le32(plane->state->crtc_h),
plane->state->crtc_x, plane->state->crtc_y, NULL);
}
} else {
handle = 0;
}
DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d\n", handle,
plane->state->crtc_w, plane->state->crtc_h,
plane->state->crtc_x, plane->state->crtc_y);
virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
plane->state->crtc_w,
plane->state->crtc_h,
plane->state->crtc_x,
plane->state->crtc_y);
virtio_gpu_cmd_resource_flush(vgdev, handle,
plane->state->crtc_x,
plane->state->crtc_y,
plane->state->crtc_w,
plane->state->crtc_h);
}
static const struct drm_plane_helper_funcs virtio_gpu_plane_helper_funcs = {
.atomic_check = virtio_gpu_plane_atomic_check,
.atomic_update = virtio_gpu_plane_atomic_update,
};
struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
int index)
{
struct drm_device *dev = vgdev->ddev;
struct drm_plane *plane;
int ret;
plane = kzalloc(sizeof(*plane), GFP_KERNEL);
if (!plane)
return ERR_PTR(-ENOMEM);
ret = drm_universal_plane_init(dev, plane, 1 << index,
&virtio_gpu_plane_funcs,
virtio_gpu_formats,
ARRAY_SIZE(virtio_gpu_formats),
DRM_PLANE_TYPE_PRIMARY, NULL);
if (ret)
goto err_plane_init;
drm_plane_helper_add(plane, &virtio_gpu_plane_helper_funcs);
return plane;
err_plane_init:
kfree(plane);
return ERR_PTR(ret);
}
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