drivers/gpu/drm/qxl/qxl_draw.c

   1 /*
   2  * Copyright 2011 Red Hat, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include <linux/dma-buf-map.h>
  24
  25 #include <drm/drm_fourcc.h>
  26
  27 #include "qxl_drv.h"
  28 #include "qxl_object.h"
  29
  30 static int alloc_clips(struct qxl_device *qdev,
  31                        struct qxl_release *release,
  32                        unsigned int num_clips,
  33                        struct qxl_bo **clips_bo)
  34 {
  35         int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;
  36
  37         return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
  38 }
  39
  40 /* returns a pointer to the already allocated qxl_rect array inside
  41  * the qxl_clip_rects. This is *not* the same as the memory allocated
  42  * on the device, it is offset to qxl_clip_rects.chunk.data */
  43 static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
  44                                               unsigned int num_clips,
  45                                               struct qxl_bo *clips_bo)
  46 {
  47         struct dma_buf_map map;
  48         struct qxl_clip_rects *dev_clips;
  49         int ret;
  50
  51         ret = qxl_bo_kmap(clips_bo, &map);
  52         if (ret)
  53                 return NULL;
  54         dev_clips = map.vaddr; /* TODO: Use mapping abstraction properly */
  55
  56         dev_clips->num_rects = num_clips;
  57         dev_clips->chunk.next_chunk = 0;
  58         dev_clips->chunk.prev_chunk = 0;
  59         dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
  60         return (struct qxl_rect *)dev_clips->chunk.data;
  61 }
  62
  63 static int
  64 alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
  65 {
  66         return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
  67                                           QXL_RELEASE_DRAWABLE, release, NULL);
  68 }
  69
  70 static void
  71 free_drawable(struct qxl_device *qdev, struct qxl_release *release)
  72 {
  73         qxl_release_free(qdev, release);
  74 }
  75
  76 /* release needs to be reserved at this point */
  77 static int
  78 make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
  79               const struct qxl_rect *rect,
  80               struct qxl_release *release)
  81 {
  82         struct qxl_drawable *drawable;
  83         int i;
  84
  85         drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
  86         if (!drawable)
  87                 return -ENOMEM;
  88
  89         drawable->type = type;
  90
  91         drawable->surface_id = surface;         /* Only primary for now */
  92         drawable->effect = QXL_EFFECT_OPAQUE;
  93         drawable->self_bitmap = 0;
  94         drawable->self_bitmap_area.top = 0;
  95         drawable->self_bitmap_area.left = 0;
  96         drawable->self_bitmap_area.bottom = 0;
  97         drawable->self_bitmap_area.right = 0;
  98         /* FIXME: add clipping */
  99         drawable->clip.type = SPICE_CLIP_TYPE_NONE;
 100
 101         /*
 102          * surfaces_dest[i] should apparently be filled out with the
 103          * surfaces that we depend on, and surface_rects should be
 104          * filled with the rectangles of those surfaces that we
 105          * are going to use.
 106          */
 107         for (i = 0; i < 3; ++i)
 108                 drawable->surfaces_dest[i] = -1;
 109
 110         if (rect)
 111                 drawable->bbox = *rect;
 112
 113         drawable->mm_time = qdev->rom->mm_clock;
 114         qxl_release_unmap(qdev, release, &drawable->release_info);
 115         return 0;
 116 }
 117
 118 /* push a draw command using the given clipping rectangles as
 119  * the sources from the shadow framebuffer.
 120  *
 121  * Right now implementing with a single draw and a clip list. Clip
 122  * lists are known to be a problem performance wise, this can be solved
 123  * by treating them differently in the server.
 124  */
 125 void qxl_draw_dirty_fb(struct qxl_device *qdev,
 126                        struct drm_framebuffer *fb,
 127                        struct qxl_bo *bo,
 128                        unsigned int flags, unsigned int color,
 129                        struct drm_clip_rect *clips,
 130                        unsigned int num_clips, int inc,
 131                        uint32_t dumb_shadow_offset)
 132 {
 133         /*
 134          * TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
 135          * send a fill command instead, much cheaper.
 136          *
 137          * See include/drm/drm_mode.h
 138          */
 139         struct drm_clip_rect *clips_ptr;
 140         int i;
 141         int left, right, top, bottom;
 142         int width, height;
 143         struct qxl_drawable *drawable;
 144         struct qxl_rect drawable_rect;
 145         struct qxl_rect *rects;
 146         int stride = fb->pitches[0];
 147         /* depth is not actually interesting, we don't mask with it */
 148         int depth = fb->format->cpp[0] * 8;
 149         struct dma_buf_map surface_map;
 150         uint8_t *surface_base;
 151         struct qxl_release *release;
 152         struct qxl_bo *clips_bo;
 153         struct qxl_drm_image *dimage;
 154         int ret;
 155
 156         ret = alloc_drawable(qdev, &release);
 157         if (ret)
 158                 return;
 159
 160         clips->x1 += dumb_shadow_offset;
 161         clips->x2 += dumb_shadow_offset;
 162
 163         left = clips->x1;
 164         right = clips->x2;
 165         top = clips->y1;
 166         bottom = clips->y2;
 167
 168         /* skip the first clip rect */
 169         for (i = 1, clips_ptr = clips + inc;
 170              i < num_clips; i++, clips_ptr += inc) {
 171                 left = min_t(int, left, (int)clips_ptr->x1);
 172                 right = max_t(int, right, (int)clips_ptr->x2);
 173                 top = min_t(int, top, (int)clips_ptr->y1);
 174                 bottom = max_t(int, bottom, (int)clips_ptr->y2);
 175         }
 176
 177         width = right - left;
 178         height = bottom - top;
 179
 180         ret = alloc_clips(qdev, release, num_clips, &clips_bo);
 181         if (ret)
 182                 goto out_free_drawable;
 183
 184         ret = qxl_image_alloc_objects(qdev, release,
 185                                       &dimage,
 186                                       height, stride);
 187         if (ret)
 188                 goto out_free_clips;
 189
 190         /* do a reservation run over all the objects we just allocated */
 191         ret = qxl_release_reserve_list(release, true);
 192         if (ret)
 193                 goto out_free_image;
 194
 195         drawable_rect.left = left;
 196         drawable_rect.right = right;
 197         drawable_rect.top = top;
 198         drawable_rect.bottom = bottom;
 199
 200         ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
 201                             release);
 202         if (ret)
 203                 goto out_release_backoff;
 204
 205         ret = qxl_bo_kmap(bo, &surface_map);
 206         if (ret)
 207                 goto out_release_backoff;
 208         surface_base = surface_map.vaddr; /* TODO: Use mapping abstraction properly */
 209
 210         ret = qxl_image_init(qdev, release, dimage, surface_base,
 211                              left - dumb_shadow_offset,
 212                              top, width, height, depth, stride);
 213         qxl_bo_kunmap(bo);
 214         if (ret)
 215                 goto out_release_backoff;
 216
 217         rects = drawable_set_clipping(qdev, num_clips, clips_bo);
 218         if (!rects) {
 219                 ret = -EINVAL;
 220                 goto out_release_backoff;
 221         }
 222         drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
 223
 224         drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
 225         drawable->clip.data = qxl_bo_physical_address(qdev,
 226                                                       clips_bo, 0);
 227
 228         drawable->u.copy.src_area.top = 0;
 229         drawable->u.copy.src_area.bottom = height;
 230         drawable->u.copy.src_area.left = 0;
 231         drawable->u.copy.src_area.right = width;
 232
 233         drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
 234         drawable->u.copy.scale_mode = 0;
 235         drawable->u.copy.mask.flags = 0;
 236         drawable->u.copy.mask.pos.x = 0;
 237         drawable->u.copy.mask.pos.y = 0;
 238         drawable->u.copy.mask.bitmap = 0;
 239
 240         drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
 241         qxl_release_unmap(qdev, release, &drawable->release_info);
 242
 243         clips_ptr = clips;
 244         for (i = 0; i < num_clips; i++, clips_ptr += inc) {
 245                 rects[i].left   = clips_ptr->x1;
 246                 rects[i].right  = clips_ptr->x2;
 247                 rects[i].top    = clips_ptr->y1;
 248                 rects[i].bottom = clips_ptr->y2;
 249         }
 250         qxl_bo_kunmap(clips_bo);
 251
 252         qxl_release_fence_buffer_objects(release);
 253         qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
 254
 255 out_release_backoff:
 256         if (ret)
 257                 qxl_release_backoff_reserve_list(release);
 258 out_free_image:
 259         qxl_image_free_objects(qdev, dimage);
 260 out_free_clips:
 261         qxl_bo_unref(&clips_bo);
 262 out_free_drawable:
 263         /* only free drawable on error */
 264         if (ret)
 265                 free_drawable(qdev, release);
 266
 267 }