324 строки
9.3 KiB
C
324 строки
9.3 KiB
C
/*
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* Copyright (C) 2015 Red Hat, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_plane_helper.h>
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#include "virtgpu_drv.h"
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static const uint32_t virtio_gpu_formats[] = {
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DRM_FORMAT_HOST_XRGB8888,
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};
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static const uint32_t virtio_gpu_cursor_formats[] = {
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DRM_FORMAT_HOST_ARGB8888,
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};
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uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc)
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{
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uint32_t format;
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switch (drm_fourcc) {
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case DRM_FORMAT_XRGB8888:
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format = VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM;
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break;
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case DRM_FORMAT_ARGB8888:
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format = VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM;
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break;
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case DRM_FORMAT_BGRX8888:
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format = VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM;
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break;
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case DRM_FORMAT_BGRA8888:
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format = VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM;
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break;
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default:
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/*
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* This should not happen, we handle everything listed
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* in virtio_gpu_formats[].
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*/
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format = 0;
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break;
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}
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WARN_ON(format == 0);
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return format;
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}
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static void virtio_gpu_plane_destroy(struct drm_plane *plane)
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{
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drm_plane_cleanup(plane);
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kfree(plane);
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}
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static const struct drm_plane_funcs virtio_gpu_plane_funcs = {
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.update_plane = drm_atomic_helper_update_plane,
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.disable_plane = drm_atomic_helper_disable_plane,
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.destroy = virtio_gpu_plane_destroy,
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.reset = drm_atomic_helper_plane_reset,
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.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
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};
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static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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bool is_cursor = plane->type == DRM_PLANE_TYPE_CURSOR;
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struct drm_crtc_state *crtc_state;
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int ret;
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if (!state->fb || !state->crtc)
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return 0;
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crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
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if (IS_ERR(crtc_state))
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return PTR_ERR(crtc_state);
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ret = drm_atomic_helper_check_plane_state(state, crtc_state,
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DRM_PLANE_HELPER_NO_SCALING,
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DRM_PLANE_HELPER_NO_SCALING,
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is_cursor, true);
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return ret;
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}
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static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct drm_device *dev = plane->dev;
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struct virtio_gpu_device *vgdev = dev->dev_private;
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struct virtio_gpu_output *output = NULL;
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struct virtio_gpu_framebuffer *vgfb;
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struct virtio_gpu_object *bo;
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uint32_t handle;
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if (plane->state->crtc)
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output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
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if (old_state->crtc)
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output = drm_crtc_to_virtio_gpu_output(old_state->crtc);
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if (WARN_ON(!output))
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return;
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if (plane->state->fb && output->enabled) {
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vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
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bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
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handle = bo->hw_res_handle;
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if (bo->dumb) {
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struct virtio_gpu_object_array *objs;
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objs = virtio_gpu_array_alloc(1);
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if (!objs)
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return;
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virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
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virtio_gpu_cmd_transfer_to_host_2d
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(vgdev, 0,
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plane->state->src_w >> 16,
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plane->state->src_h >> 16,
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plane->state->src_x >> 16,
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plane->state->src_y >> 16,
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objs, NULL);
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}
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} else {
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handle = 0;
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}
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DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n", handle,
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plane->state->crtc_w, plane->state->crtc_h,
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plane->state->crtc_x, plane->state->crtc_y,
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plane->state->src_w >> 16,
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plane->state->src_h >> 16,
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plane->state->src_x >> 16,
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plane->state->src_y >> 16);
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virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
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plane->state->src_w >> 16,
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plane->state->src_h >> 16,
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plane->state->src_x >> 16,
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plane->state->src_y >> 16);
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if (handle)
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virtio_gpu_cmd_resource_flush(vgdev, handle,
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plane->state->src_x >> 16,
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plane->state->src_y >> 16,
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plane->state->src_w >> 16,
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plane->state->src_h >> 16);
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}
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static int virtio_gpu_cursor_prepare_fb(struct drm_plane *plane,
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struct drm_plane_state *new_state)
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{
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struct drm_device *dev = plane->dev;
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struct virtio_gpu_device *vgdev = dev->dev_private;
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struct virtio_gpu_framebuffer *vgfb;
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struct virtio_gpu_object *bo;
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if (!new_state->fb)
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return 0;
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vgfb = to_virtio_gpu_framebuffer(new_state->fb);
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bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
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if (bo && bo->dumb && (plane->state->fb != new_state->fb)) {
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vgfb->fence = virtio_gpu_fence_alloc(vgdev);
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if (!vgfb->fence)
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return -ENOMEM;
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}
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return 0;
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}
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static void virtio_gpu_cursor_cleanup_fb(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct virtio_gpu_framebuffer *vgfb;
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if (!plane->state->fb)
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return;
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vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
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if (vgfb->fence) {
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dma_fence_put(&vgfb->fence->f);
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vgfb->fence = NULL;
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}
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}
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static void virtio_gpu_cursor_plane_update(struct drm_plane *plane,
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struct drm_plane_state *old_state)
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{
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struct drm_device *dev = plane->dev;
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struct virtio_gpu_device *vgdev = dev->dev_private;
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struct virtio_gpu_output *output = NULL;
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struct virtio_gpu_framebuffer *vgfb;
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struct virtio_gpu_object *bo = NULL;
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uint32_t handle;
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if (plane->state->crtc)
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output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
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if (old_state->crtc)
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output = drm_crtc_to_virtio_gpu_output(old_state->crtc);
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if (WARN_ON(!output))
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return;
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if (plane->state->fb) {
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vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
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bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
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handle = bo->hw_res_handle;
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} else {
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handle = 0;
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}
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if (bo && bo->dumb && (plane->state->fb != old_state->fb)) {
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/* new cursor -- update & wait */
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struct virtio_gpu_object_array *objs;
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objs = virtio_gpu_array_alloc(1);
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if (!objs)
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return;
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virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
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virtio_gpu_cmd_transfer_to_host_2d
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(vgdev, 0,
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plane->state->crtc_w,
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plane->state->crtc_h,
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0, 0, objs, vgfb->fence);
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dma_fence_wait(&vgfb->fence->f, true);
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dma_fence_put(&vgfb->fence->f);
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vgfb->fence = NULL;
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}
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if (plane->state->fb != old_state->fb) {
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DRM_DEBUG("update, handle %d, pos +%d+%d, hot %d,%d\n", handle,
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plane->state->crtc_x,
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plane->state->crtc_y,
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plane->state->fb ? plane->state->fb->hot_x : 0,
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plane->state->fb ? plane->state->fb->hot_y : 0);
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output->cursor.hdr.type =
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cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
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output->cursor.resource_id = cpu_to_le32(handle);
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if (plane->state->fb) {
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output->cursor.hot_x =
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cpu_to_le32(plane->state->fb->hot_x);
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output->cursor.hot_y =
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cpu_to_le32(plane->state->fb->hot_y);
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} else {
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output->cursor.hot_x = cpu_to_le32(0);
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output->cursor.hot_y = cpu_to_le32(0);
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}
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} else {
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DRM_DEBUG("move +%d+%d\n",
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plane->state->crtc_x,
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plane->state->crtc_y);
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output->cursor.hdr.type =
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cpu_to_le32(VIRTIO_GPU_CMD_MOVE_CURSOR);
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}
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output->cursor.pos.x = cpu_to_le32(plane->state->crtc_x);
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output->cursor.pos.y = cpu_to_le32(plane->state->crtc_y);
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virtio_gpu_cursor_ping(vgdev, output);
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}
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static const struct drm_plane_helper_funcs virtio_gpu_primary_helper_funcs = {
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.atomic_check = virtio_gpu_plane_atomic_check,
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.atomic_update = virtio_gpu_primary_plane_update,
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};
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static const struct drm_plane_helper_funcs virtio_gpu_cursor_helper_funcs = {
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.prepare_fb = virtio_gpu_cursor_prepare_fb,
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.cleanup_fb = virtio_gpu_cursor_cleanup_fb,
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.atomic_check = virtio_gpu_plane_atomic_check,
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.atomic_update = virtio_gpu_cursor_plane_update,
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};
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struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
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enum drm_plane_type type,
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int index)
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{
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struct drm_device *dev = vgdev->ddev;
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const struct drm_plane_helper_funcs *funcs;
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struct drm_plane *plane;
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const uint32_t *formats;
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int ret, nformats;
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plane = kzalloc(sizeof(*plane), GFP_KERNEL);
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if (!plane)
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return ERR_PTR(-ENOMEM);
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if (type == DRM_PLANE_TYPE_CURSOR) {
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formats = virtio_gpu_cursor_formats;
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nformats = ARRAY_SIZE(virtio_gpu_cursor_formats);
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funcs = &virtio_gpu_cursor_helper_funcs;
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} else {
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formats = virtio_gpu_formats;
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nformats = ARRAY_SIZE(virtio_gpu_formats);
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funcs = &virtio_gpu_primary_helper_funcs;
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}
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ret = drm_universal_plane_init(dev, plane, 1 << index,
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&virtio_gpu_plane_funcs,
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formats, nformats,
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NULL, type, NULL);
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if (ret)
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goto err_plane_init;
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drm_plane_helper_add(plane, funcs);
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return plane;
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err_plane_init:
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kfree(plane);
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return ERR_PTR(ret);
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}
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