drivers/gpu/drm/qxl/qxl_draw.c - linux - Git at Google

 /*
  * Copyright 2011 Red Hat, Inc.
  *
  * 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
  * on the rights to use, copy, modify, merge, publish, distribute, sub
  * license, 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 NON-INFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS 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 <linux/dma-buf-map.h>

 #include <drm/drm_fourcc.h>

 #include "qxl_drv.h"
 #include "qxl_object.h"

 static int alloc_clips(struct qxl_device *qdev,
 		       struct qxl_release *release,
 		       unsigned int num_clips,
 		       struct qxl_bo **clips_bo)
 {
 	int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;

 	return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
 }

 /* returns a pointer to the already allocated qxl_rect array inside
  * the qxl_clip_rects. This is *not* the same as the memory allocated
  * on the device, it is offset to qxl_clip_rects.chunk.data */
 static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
 					      unsigned int num_clips,
 					      struct qxl_bo *clips_bo)
 {
 	struct dma_buf_map map;
 	struct qxl_clip_rects *dev_clips;
 	int ret;

 	ret = qxl_bo_kmap(clips_bo, &map);
 	if (ret)
 		return NULL;
 	dev_clips = map.vaddr; /* TODO: Use mapping abstraction properly */

 	dev_clips->num_rects = num_clips;
 	dev_clips->chunk.next_chunk = 0;
 	dev_clips->chunk.prev_chunk = 0;
 	dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
 	return (struct qxl_rect *)dev_clips->chunk.data;
 }

 static int
 alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
 {
 	return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
 					  QXL_RELEASE_DRAWABLE, release, NULL);
 }

 static void
 free_drawable(struct qxl_device *qdev, struct qxl_release *release)
 {
 	qxl_release_free(qdev, release);
 }

 /* release needs to be reserved at this point */
 static int
 make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
 	      const struct qxl_rect *rect,
 	      struct qxl_release *release)
 {
 	struct qxl_drawable *drawable;
 	int i;

 	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
 	if (!drawable)
 		return -ENOMEM;

 	drawable->type = type;

 	drawable->surface_id = surface;		/* Only primary for now */
 	drawable->effect = QXL_EFFECT_OPAQUE;
 	drawable->self_bitmap = 0;
 	drawable->self_bitmap_area.top = 0;
 	drawable->self_bitmap_area.left = 0;
 	drawable->self_bitmap_area.bottom = 0;
 	drawable->self_bitmap_area.right = 0;
 	/* FIXME: add clipping */
 	drawable->clip.type = SPICE_CLIP_TYPE_NONE;

 	/*
 	 * surfaces_dest[i] should apparently be filled out with the
 	 * surfaces that we depend on, and surface_rects should be
 	 * filled with the rectangles of those surfaces that we
 	 * are going to use.
 	 */
 	for (i = 0; i < 3; ++i)
 		drawable->surfaces_dest[i] = -1;

 	if (rect)
 		drawable->bbox = *rect;

 	drawable->mm_time = qdev->rom->mm_clock;
 	qxl_release_unmap(qdev, release, &drawable->release_info);
 	return 0;
 }

 /* push a draw command using the given clipping rectangles as
  * the sources from the shadow framebuffer.
  *
  * Right now implementing with a single draw and a clip list. Clip
  * lists are known to be a problem performance wise, this can be solved
  * by treating them differently in the server.
  */
 void qxl_draw_dirty_fb(struct qxl_device *qdev,
 		       struct drm_framebuffer *fb,
 		       struct qxl_bo *bo,
 		       unsigned int flags, unsigned int color,
 		       struct drm_clip_rect *clips,
 		       unsigned int num_clips, int inc,
 		       uint32_t dumb_shadow_offset)
 {
 	/*
 	 * TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
 	 * send a fill command instead, much cheaper.
 	 *
 	 * See include/drm/drm_mode.h
 	 */
 	struct drm_clip_rect *clips_ptr;
 	int i;
 	int left, right, top, bottom;
 	int width, height;
 	struct qxl_drawable *drawable;
 	struct qxl_rect drawable_rect;
 	struct qxl_rect *rects;
 	int stride = fb->pitches[0];
 	/* depth is not actually interesting, we don't mask with it */
 	int depth = fb->format->cpp[0] * 8;
 	struct dma_buf_map surface_map;
 	uint8_t *surface_base;
 	struct qxl_release *release;
 	struct qxl_bo *clips_bo;
 	struct qxl_drm_image *dimage;
 	int ret;

 	ret = alloc_drawable(qdev, &release);
 	if (ret)
 		return;

 	clips->x1 += dumb_shadow_offset;
 	clips->x2 += dumb_shadow_offset;

 	left = clips->x1;
 	right = clips->x2;
 	top = clips->y1;
 	bottom = clips->y2;

 	/* skip the first clip rect */
 	for (i = 1, clips_ptr = clips + inc;
 	     i < num_clips; i++, clips_ptr += inc) {
 		left = min_t(int, left, (int)clips_ptr->x1);
 		right = max_t(int, right, (int)clips_ptr->x2);
 		top = min_t(int, top, (int)clips_ptr->y1);
 		bottom = max_t(int, bottom, (int)clips_ptr->y2);
 	}

 	width = right - left;
 	height = bottom - top;

 	ret = alloc_clips(qdev, release, num_clips, &clips_bo);
 	if (ret)
 		goto out_free_drawable;

 	ret = qxl_image_alloc_objects(qdev, release,
 				      &dimage,
 				      height, stride);
 	if (ret)
 		goto out_free_clips;

 	/* do a reservation run over all the objects we just allocated */
 	ret = qxl_release_reserve_list(release, true);
 	if (ret)
 		goto out_free_image;

 	drawable_rect.left = left;
 	drawable_rect.right = right;
 	drawable_rect.top = top;
 	drawable_rect.bottom = bottom;

 	ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
 			    release);
 	if (ret)
 		goto out_release_backoff;

 	ret = qxl_bo_kmap(bo, &surface_map);
 	if (ret)
 		goto out_release_backoff;
 	surface_base = surface_map.vaddr; /* TODO: Use mapping abstraction properly */

 	ret = qxl_image_init(qdev, release, dimage, surface_base,
 			     left - dumb_shadow_offset,
 			     top, width, height, depth, stride);
 	qxl_bo_kunmap(bo);
 	if (ret)
 		goto out_release_backoff;

 	rects = drawable_set_clipping(qdev, num_clips, clips_bo);
 	if (!rects) {
 		ret = -EINVAL;
 		goto out_release_backoff;
 	}
 	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);

 	drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
 	drawable->clip.data = qxl_bo_physical_address(qdev,
 						      clips_bo, 0);

 	drawable->u.copy.src_area.top = 0;
 	drawable->u.copy.src_area.bottom = height;
 	drawable->u.copy.src_area.left = 0;
 	drawable->u.copy.src_area.right = width;

 	drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
 	drawable->u.copy.scale_mode = 0;
 	drawable->u.copy.mask.flags = 0;
 	drawable->u.copy.mask.pos.x = 0;
 	drawable->u.copy.mask.pos.y = 0;
 	drawable->u.copy.mask.bitmap = 0;

 	drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
 	qxl_release_unmap(qdev, release, &drawable->release_info);

 	clips_ptr = clips;
 	for (i = 0; i < num_clips; i++, clips_ptr += inc) {
 		rects[i].left   = clips_ptr->x1;
 		rects[i].right  = clips_ptr->x2;
 		rects[i].top    = clips_ptr->y1;
 		rects[i].bottom = clips_ptr->y2;
 	}
 	qxl_bo_kunmap(clips_bo);

 	qxl_release_fence_buffer_objects(release);
 	qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);

 out_release_backoff:
 	if (ret)
 		qxl_release_backoff_reserve_list(release);
 out_free_image:
 	qxl_image_free_objects(qdev, dimage);
 out_free_clips:
 	qxl_bo_unref(&clips_bo);
 out_free_drawable:
 	/* only free drawable on error */
 	if (ret)
 		free_drawable(qdev, release);

 }
	/*
	* Copyright 2011 Red Hat, Inc.
	*
	* 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
	* on the rights to use, copy, modify, merge, publish, distribute, sub
	* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS 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 <linux/dma-buf-map.h>

	#include <drm/drm_fourcc.h>

	#include "qxl_drv.h"
	#include "qxl_object.h"

	static int alloc_clips(struct qxl_device *qdev,
	struct qxl_release *release,
	unsigned int num_clips,
	struct qxl_bo **clips_bo)
	{
	int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;

	return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
	}

	/* returns a pointer to the already allocated qxl_rect array inside
	* the qxl_clip_rects. This is not the same as the memory allocated
	* on the device, it is offset to qxl_clip_rects.chunk.data */
	static struct qxl_rect drawable_set_clipping(struct qxl_device qdev,
	unsigned int num_clips,
	struct qxl_bo *clips_bo)
	{
	struct dma_buf_map map;
	struct qxl_clip_rects *dev_clips;
	int ret;

	ret = qxl_bo_kmap(clips_bo, &map);
	if (ret)
	return NULL;
	dev_clips = map.vaddr; /* TODO: Use mapping abstraction properly */

	dev_clips->num_rects = num_clips;
	dev_clips->chunk.next_chunk = 0;
	dev_clips->chunk.prev_chunk = 0;
	dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
	return (struct qxl_rect *)dev_clips->chunk.data;
	}

	static int
	alloc_drawable(struct qxl_device qdev, struct qxl_release *release)
	{
	return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
	QXL_RELEASE_DRAWABLE, release, NULL);
	}

	static void
	free_drawable(struct qxl_device qdev, struct qxl_release release)
	{
	qxl_release_free(qdev, release);
	}

	/* release needs to be reserved at this point */
	static int
	make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
	const struct qxl_rect *rect,
	struct qxl_release *release)
	{
	struct qxl_drawable *drawable;
	int i;

	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
	if (!drawable)
	return -ENOMEM;

	drawable->type = type;

	drawable->surface_id = surface; /* Only primary for now */
	drawable->effect = QXL_EFFECT_OPAQUE;
	drawable->self_bitmap = 0;
	drawable->self_bitmap_area.top = 0;
	drawable->self_bitmap_area.left = 0;
	drawable->self_bitmap_area.bottom = 0;
	drawable->self_bitmap_area.right = 0;
	/* FIXME: add clipping */
	drawable->clip.type = SPICE_CLIP_TYPE_NONE;

	/*
	* surfaces_dest[i] should apparently be filled out with the
	* surfaces that we depend on, and surface_rects should be
	* filled with the rectangles of those surfaces that we
	* are going to use.
	*/
	for (i = 0; i < 3; ++i)
	drawable->surfaces_dest[i] = -1;

	if (rect)
	drawable->bbox = *rect;

	drawable->mm_time = qdev->rom->mm_clock;
	qxl_release_unmap(qdev, release, &drawable->release_info);
	return 0;
	}

	/* push a draw command using the given clipping rectangles as
	* the sources from the shadow framebuffer.
	*
	* Right now implementing with a single draw and a clip list. Clip
	* lists are known to be a problem performance wise, this can be solved
	* by treating them differently in the server.
	*/
	void qxl_draw_dirty_fb(struct qxl_device *qdev,
	struct drm_framebuffer *fb,
	struct qxl_bo *bo,
	unsigned int flags, unsigned int color,
	struct drm_clip_rect *clips,
	unsigned int num_clips, int inc,
	uint32_t dumb_shadow_offset)
	{
	/*
	* TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
	* send a fill command instead, much cheaper.
	*
	* See include/drm/drm_mode.h
	*/
	struct drm_clip_rect *clips_ptr;
	int i;
	int left, right, top, bottom;
	int width, height;
	struct qxl_drawable *drawable;
	struct qxl_rect drawable_rect;
	struct qxl_rect *rects;
	int stride = fb->pitches[0];
	/* depth is not actually interesting, we don't mask with it */
	int depth = fb->format->cpp[0] * 8;
	struct dma_buf_map surface_map;
	uint8_t *surface_base;
	struct qxl_release *release;
	struct qxl_bo *clips_bo;
	struct qxl_drm_image *dimage;
	int ret;

	ret = alloc_drawable(qdev, &release);
	if (ret)
	return;

	clips->x1 += dumb_shadow_offset;
	clips->x2 += dumb_shadow_offset;

	left = clips->x1;
	right = clips->x2;
	top = clips->y1;
	bottom = clips->y2;

	/* skip the first clip rect */
	for (i = 1, clips_ptr = clips + inc;
	i < num_clips; i++, clips_ptr += inc) {
	left = min_t(int, left, (int)clips_ptr->x1);
	right = max_t(int, right, (int)clips_ptr->x2);
	top = min_t(int, top, (int)clips_ptr->y1);
	bottom = max_t(int, bottom, (int)clips_ptr->y2);
	}

	width = right - left;
	height = bottom - top;

	ret = alloc_clips(qdev, release, num_clips, &clips_bo);
	if (ret)
	goto out_free_drawable;

	ret = qxl_image_alloc_objects(qdev, release,
	&dimage,
	height, stride);
	if (ret)
	goto out_free_clips;

	/* do a reservation run over all the objects we just allocated */
	ret = qxl_release_reserve_list(release, true);
	if (ret)
	goto out_free_image;

	drawable_rect.left = left;
	drawable_rect.right = right;
	drawable_rect.top = top;
	drawable_rect.bottom = bottom;

	ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
	release);
	if (ret)
	goto out_release_backoff;

	ret = qxl_bo_kmap(bo, &surface_map);
	if (ret)
	goto out_release_backoff;
	surface_base = surface_map.vaddr; /* TODO: Use mapping abstraction properly */

	ret = qxl_image_init(qdev, release, dimage, surface_base,
	left - dumb_shadow_offset,
	top, width, height, depth, stride);
	qxl_bo_kunmap(bo);
	if (ret)
	goto out_release_backoff;

	rects = drawable_set_clipping(qdev, num_clips, clips_bo);
	if (!rects) {
	ret = -EINVAL;
	goto out_release_backoff;
	}
	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);

	drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
	drawable->clip.data = qxl_bo_physical_address(qdev,
	clips_bo, 0);

	drawable->u.copy.src_area.top = 0;
	drawable->u.copy.src_area.bottom = height;
	drawable->u.copy.src_area.left = 0;
	drawable->u.copy.src_area.right = width;

	drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
	drawable->u.copy.scale_mode = 0;
	drawable->u.copy.mask.flags = 0;
	drawable->u.copy.mask.pos.x = 0;
	drawable->u.copy.mask.pos.y = 0;
	drawable->u.copy.mask.bitmap = 0;

	drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
	qxl_release_unmap(qdev, release, &drawable->release_info);

	clips_ptr = clips;
	for (i = 0; i < num_clips; i++, clips_ptr += inc) {
	rects[i].left = clips_ptr->x1;
	rects[i].right = clips_ptr->x2;
	rects[i].top = clips_ptr->y1;
	rects[i].bottom = clips_ptr->y2;
	}
	qxl_bo_kunmap(clips_bo);

	qxl_release_fence_buffer_objects(release);
	qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);

	out_release_backoff:
	if (ret)
	qxl_release_backoff_reserve_list(release);
	out_free_image:
	qxl_image_free_objects(qdev, dimage);
	out_free_clips:
	qxl_bo_unref(&clips_bo);
	out_free_drawable:
	/* only free drawable on error */
	if (ret)
	free_drawable(qdev, release);

	}