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 "qxl_drv.h"
  24 #include "qxl_object.h"
  25
  26 static int alloc_clips(struct qxl_device *qdev,
  27                        struct qxl_release *release,
  28                        unsigned int num_clips,
  29                        struct qxl_bo **clips_bo)
  30 {
  31         int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;
  32
  33         return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
  34 }
  35
  36 /* returns a pointer to the already allocated qxl_rect array inside
  37  * the qxl_clip_rects. This is *not* the same as the memory allocated
  38  * on the device, it is offset to qxl_clip_rects.chunk.data */
  39 static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
  40                                               unsigned int num_clips,
  41                                               struct qxl_bo *clips_bo)
  42 {
  43         struct qxl_clip_rects *dev_clips;
  44         int ret;
  45
  46         ret = qxl_bo_kmap(clips_bo, (void **)&dev_clips);
  47         if (ret) {
  48                 return NULL;
  49         }
  50         dev_clips->num_rects = num_clips;
  51         dev_clips->chunk.next_chunk = 0;
  52         dev_clips->chunk.prev_chunk = 0;
  53         dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
  54         return (struct qxl_rect *)dev_clips->chunk.data;
  55 }
  56
  57 static int
  58 alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
  59 {
  60         return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
  61                                           QXL_RELEASE_DRAWABLE, release, NULL);
  62 }
  63
  64 static void
  65 free_drawable(struct qxl_device *qdev, struct qxl_release *release)
  66 {
  67         qxl_release_free(qdev, release);
  68 }
  69
  70 /* release needs to be reserved at this point */
  71 static int
  72 make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
  73               const struct qxl_rect *rect,
  74               struct qxl_release *release)
  75 {
  76         struct qxl_drawable *drawable;
  77         int i;
  78
  79         drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
  80         if (!drawable)
  81                 return -ENOMEM;
  82
  83         drawable->type = type;
  84
  85         drawable->surface_id = surface;         /* Only primary for now */
  86         drawable->effect = QXL_EFFECT_OPAQUE;
  87         drawable->self_bitmap = 0;
  88         drawable->self_bitmap_area.top = 0;
  89         drawable->self_bitmap_area.left = 0;
  90         drawable->self_bitmap_area.bottom = 0;
  91         drawable->self_bitmap_area.right = 0;
  92         /* FIXME: add clipping */
  93         drawable->clip.type = SPICE_CLIP_TYPE_NONE;
  94
  95         /*
  96          * surfaces_dest[i] should apparently be filled out with the
  97          * surfaces that we depend on, and surface_rects should be
  98          * filled with the rectangles of those surfaces that we
  99          * are going to use.
 100          */
 101         for (i = 0; i < 3; ++i)
 102                 drawable->surfaces_dest[i] = -1;
 103
 104         if (rect)
 105                 drawable->bbox = *rect;
 106
 107         drawable->mm_time = qdev->rom->mm_clock;
 108         qxl_release_unmap(qdev, release, &drawable->release_info);
 109         return 0;
 110 }
 111
 112 /* push a draw command using the given clipping rectangles as
 113  * the sources from the shadow framebuffer.
 114  *
 115  * Right now implementing with a single draw and a clip list. Clip
 116  * lists are known to be a problem performance wise, this can be solved
 117  * by treating them differently in the server.
 118  */
 119 void qxl_draw_dirty_fb(struct qxl_device *qdev,
 120                        struct drm_framebuffer *fb,
 121                        struct qxl_bo *bo,
 122                        unsigned int flags, unsigned int color,
 123                        struct drm_clip_rect *clips,
 124                        unsigned int num_clips, int inc,
 125                        uint32_t dumb_shadow_offset)
 126 {
 127         /*
 128          * TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
 129          * send a fill command instead, much cheaper.
 130          *
 131          * See include/drm/drm_mode.h
 132          */
 133         struct drm_clip_rect *clips_ptr;
 134         int i;
 135         int left, right, top, bottom;
 136         int width, height;
 137         struct qxl_drawable *drawable;
 138         struct qxl_rect drawable_rect;
 139         struct qxl_rect *rects;
 140         int stride = fb->pitches[0];
 141         /* depth is not actually interesting, we don't mask with it */
 142         int depth = fb->format->cpp[0] * 8;
 143         uint8_t *surface_base;
 144         struct qxl_release *release;
 145         struct qxl_bo *clips_bo;
 146         struct qxl_drm_image *dimage;
 147         int ret;
 148
 149         ret = alloc_drawable(qdev, &release);
 150         if (ret)
 151                 return;
 152
 153         clips->x1 += dumb_shadow_offset;
 154         clips->x2 += dumb_shadow_offset;
 155
 156         left = clips->x1;
 157         right = clips->x2;
 158         top = clips->y1;
 159         bottom = clips->y2;
 160
 161         /* skip the first clip rect */
 162         for (i = 1, clips_ptr = clips + inc;
 163              i < num_clips; i++, clips_ptr += inc) {
 164                 left = min_t(int, left, (int)clips_ptr->x1);
 165                 right = max_t(int, right, (int)clips_ptr->x2);
 166                 top = min_t(int, top, (int)clips_ptr->y1);
 167                 bottom = max_t(int, bottom, (int)clips_ptr->y2);
 168         }
 169
 170         width = right - left;
 171         height = bottom - top;
 172
 173         ret = alloc_clips(qdev, release, num_clips, &clips_bo);
 174         if (ret)
 175                 goto out_free_drawable;
 176
 177         ret = qxl_image_alloc_objects(qdev, release,
 178                                       &dimage,
 179                                       height, stride);
 180         if (ret)
 181                 goto out_free_clips;
 182
 183         /* do a reservation run over all the objects we just allocated */
 184         ret = qxl_release_reserve_list(release, true);
 185         if (ret)
 186                 goto out_free_image;
 187
 188         drawable_rect.left = left;
 189         drawable_rect.right = right;
 190         drawable_rect.top = top;
 191         drawable_rect.bottom = bottom;
 192
 193         ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
 194                             release);
 195         if (ret)
 196                 goto out_release_backoff;
 197
 198         ret = qxl_bo_kmap(bo, (void **)&surface_base);
 199         if (ret)
 200                 goto out_release_backoff;
 201
 202         ret = qxl_image_init(qdev, release, dimage, surface_base,
 203                              left - dumb_shadow_offset,
 204                              top, width, height, depth, stride);
 205         qxl_bo_kunmap(bo);
 206         if (ret)
 207                 goto out_release_backoff;
 208
 209         rects = drawable_set_clipping(qdev, num_clips, clips_bo);
 210         if (!rects)
 211                 goto out_release_backoff;
 212
 213         drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
 214
 215         drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
 216         drawable->clip.data = qxl_bo_physical_address(qdev,
 217                                                       clips_bo, 0);
 218
 219         drawable->u.copy.src_area.top = 0;
 220         drawable->u.copy.src_area.bottom = height;
 221         drawable->u.copy.src_area.left = 0;
 222         drawable->u.copy.src_area.right = width;
 223
 224         drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
 225         drawable->u.copy.scale_mode = 0;
 226         drawable->u.copy.mask.flags = 0;
 227         drawable->u.copy.mask.pos.x = 0;
 228         drawable->u.copy.mask.pos.y = 0;
 229         drawable->u.copy.mask.bitmap = 0;
 230
 231         drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
 232         qxl_release_unmap(qdev, release, &drawable->release_info);
 233
 234         clips_ptr = clips;
 235         for (i = 0; i < num_clips; i++, clips_ptr += inc) {
 236                 rects[i].left   = clips_ptr->x1;
 237                 rects[i].right  = clips_ptr->x2;
 238                 rects[i].top    = clips_ptr->y1;
 239                 rects[i].bottom = clips_ptr->y2;
 240         }
 241         qxl_bo_kunmap(clips_bo);
 242
 243         qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
 244         qxl_release_fence_buffer_objects(release);
 245
 246 out_release_backoff:
 247         if (ret)
 248                 qxl_release_backoff_reserve_list(release);
 249 out_free_image:
 250         qxl_image_free_objects(qdev, dimage);
 251 out_free_clips:
 252         qxl_bo_unref(&clips_bo);
 253 out_free_drawable:
 254         /* only free drawable on error */
 255         if (ret)
 256                 free_drawable(qdev, release);
 257
 258 }