151 lines
4.1 KiB
C
151 lines
4.1 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/drmP.h>
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#include <drm/drm_fb_helper.h>
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#include "virtgpu_drv.h"
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static int virtio_gpu_dirty_update(struct virtio_gpu_framebuffer *fb,
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bool store, int x, int y,
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int width, int height)
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{
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struct drm_device *dev = fb->base.dev;
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struct virtio_gpu_device *vgdev = dev->dev_private;
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bool store_for_later = false;
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int bpp = fb->base.format->cpp[0];
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int x2, y2;
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unsigned long flags;
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struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(fb->base.obj[0]);
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if ((width <= 0) ||
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(x + width > fb->base.width) ||
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(y + height > fb->base.height)) {
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DRM_DEBUG("values out of range %dx%d+%d+%d, fb %dx%d\n",
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width, height, x, y,
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fb->base.width, fb->base.height);
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return -EINVAL;
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}
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/*
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* Can be called with pretty much any context (console output
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* path). If we are in atomic just store the dirty rect info
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* to send out the update later.
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*
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* Can't test inside spin lock.
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*/
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if (in_atomic() || store)
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store_for_later = true;
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x2 = x + width - 1;
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y2 = y + height - 1;
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spin_lock_irqsave(&fb->dirty_lock, flags);
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if (fb->y1 < y)
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y = fb->y1;
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if (fb->y2 > y2)
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y2 = fb->y2;
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if (fb->x1 < x)
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x = fb->x1;
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if (fb->x2 > x2)
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x2 = fb->x2;
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if (store_for_later) {
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fb->x1 = x;
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fb->x2 = x2;
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fb->y1 = y;
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fb->y2 = y2;
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spin_unlock_irqrestore(&fb->dirty_lock, flags);
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return 0;
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}
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fb->x1 = fb->y1 = INT_MAX;
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fb->x2 = fb->y2 = 0;
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spin_unlock_irqrestore(&fb->dirty_lock, flags);
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{
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uint32_t offset;
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uint32_t w = x2 - x + 1;
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uint32_t h = y2 - y + 1;
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offset = (y * fb->base.pitches[0]) + x * bpp;
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virtio_gpu_cmd_transfer_to_host_2d(vgdev, obj,
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offset,
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cpu_to_le32(w),
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cpu_to_le32(h),
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cpu_to_le32(x),
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cpu_to_le32(y),
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NULL);
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}
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virtio_gpu_cmd_resource_flush(vgdev, obj->hw_res_handle,
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x, y, x2 - x + 1, y2 - y + 1);
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return 0;
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}
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int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *vgfb,
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struct drm_clip_rect *clips,
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unsigned int num_clips)
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{
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struct virtio_gpu_device *vgdev = vgfb->base.dev->dev_private;
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struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
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struct drm_clip_rect norect;
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struct drm_clip_rect *clips_ptr;
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int left, right, top, bottom;
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int i;
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int inc = 1;
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if (!num_clips) {
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num_clips = 1;
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clips = &norect;
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norect.x1 = norect.y1 = 0;
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norect.x2 = vgfb->base.width;
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norect.y2 = vgfb->base.height;
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}
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left = clips->x1;
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right = clips->x2;
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top = clips->y1;
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bottom = clips->y2;
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/* skip the first clip rect */
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for (i = 1, clips_ptr = clips + inc;
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i < num_clips; i++, clips_ptr += inc) {
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left = min_t(int, left, (int)clips_ptr->x1);
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right = max_t(int, right, (int)clips_ptr->x2);
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top = min_t(int, top, (int)clips_ptr->y1);
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bottom = max_t(int, bottom, (int)clips_ptr->y2);
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}
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if (obj->dumb)
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return virtio_gpu_dirty_update(vgfb, false, left, top,
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right - left, bottom - top);
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virtio_gpu_cmd_resource_flush(vgdev, obj->hw_res_handle,
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left, top, right - left, bottom - top);
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return 0;
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}
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