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/iosys-map.h>
  24
  25 #include <drm/drm_fourcc.h>
  26 #include <drm/drm_framebuffer.h>
  27
  28 #include "qxl_drv.h"
  29 #include "qxl_object.h"
  30
  31 static int alloc_clips(struct qxl_device *qdev,
  32                        struct qxl_release *release,
  33                        unsigned int num_clips,
  34                        struct qxl_bo **clips_bo)
  35 {
  36         int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;
  37
  38         return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
  39 }
  40
  41 /* returns a pointer to the already allocated qxl_rect array inside
  42  * the qxl_clip_rects. This is *not* the same as the memory allocated
  43  * on the device, it is offset to qxl_clip_rects.chunk.data */
  44 static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
  45                                               unsigned int num_clips,
  46                                               struct qxl_bo *clips_bo)
  47 {
  48         struct iosys_map map;
  49         struct qxl_clip_rects *dev_clips;
  50         int ret;
  51
  52         ret = qxl_bo_vmap_locked(clips_bo, &map);
  53         if (ret)
  54                 return NULL;
  55         dev_clips = map.vaddr; /* TODO: Use mapping abstraction properly */
  56
  57         dev_clips->num_rects = num_clips;
  58         dev_clips->chunk.next_chunk = 0;
  59         dev_clips->chunk.prev_chunk = 0;
  60         dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
  61         return (struct qxl_rect *)dev_clips->chunk.data;
  62 }
  63
  64 static int
  65 alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
  66 {
  67         return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
  68                                           QXL_RELEASE_DRAWABLE, release, NULL);
  69 }
  70
  71 static void
  72 free_drawable(struct qxl_device *qdev, struct qxl_release *release)
  73 {
  74         qxl_release_free(qdev, release);
  75 }
  76
  77 /* release needs to be reserved at this point */
  78 static int
  79 make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
  80               const struct qxl_rect *rect,
  81               struct qxl_release *release)
  82 {
  83         struct qxl_drawable *drawable;
  84         int i;
  85
  86         drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
  87         if (!drawable)
  88                 return -ENOMEM;
  89
  90         drawable->type = type;
  91
  92         drawable->surface_id = surface;         /* Only primary for now */
  93         drawable->effect = QXL_EFFECT_OPAQUE;
  94         drawable->self_bitmap = 0;
  95         drawable->self_bitmap_area.top = 0;
  96         drawable->self_bitmap_area.left = 0;
  97         drawable->self_bitmap_area.bottom = 0;
  98         drawable->self_bitmap_area.right = 0;
  99         /* FIXME: add clipping */
 100         drawable->clip.type = SPICE_CLIP_TYPE_NONE;
 101
 102         /*
 103          * surfaces_dest[i] should apparently be filled out with the
 104          * surfaces that we depend on, and surface_rects should be
 105          * filled with the rectangles of those surfaces that we
 106          * are going to use.
 107          */
 108         for (i = 0; i < 3; ++i)
 109                 drawable->surfaces_dest[i] = -1;
 110
 111         if (rect)
 112                 drawable->bbox = *rect;
 113
 114         drawable->mm_time = qdev->rom->mm_clock;
 115         qxl_release_unmap(qdev, release, &drawable->release_info);
 116         return 0;
 117 }
 118
 119 /* push a draw command using the given clipping rectangles as
 120  * the sources from the shadow framebuffer.
 121  *
 122  * Right now implementing with a single draw and a clip list. Clip
 123  * lists are known to be a problem performance wise, this can be solved
 124  * by treating them differently in the server.
 125  */
 126 void qxl_draw_dirty_fb(struct qxl_device *qdev,
 127                        struct drm_framebuffer *fb,
 128                        struct qxl_bo *bo,
 129                        unsigned int flags, unsigned int color,
 130                        struct drm_clip_rect *clips,
 131                        unsigned int num_clips, int inc,
 132                        uint32_t dumb_shadow_offset)
 133 {
 134         /*
 135          * TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
 136          * send a fill command instead, much cheaper.
 137          *
 138          * See include/drm/drm_mode.h
 139          */
 140         struct drm_clip_rect *clips_ptr;
 141         int i;
 142         int left, right, top, bottom;
 143         int width, height;
 144         struct qxl_drawable *drawable;
 145         struct qxl_rect drawable_rect;
 146         struct qxl_rect *rects;
 147         int stride = fb->pitches[0];
 148         /* depth is not actually interesting, we don't mask with it */
 149         int depth = fb->format->cpp[0] * 8;
 150         struct iosys_map surface_map;
 151         uint8_t *surface_base;
 152         struct qxl_release *release;
 153         struct qxl_bo *clips_bo;
 154         struct qxl_drm_image *dimage;
 155         int ret;
 156
 157         ret = alloc_drawable(qdev, &release);
 158         if (ret)
 159                 return;
 160
 161         clips->x1 += dumb_shadow_offset;
 162         clips->x2 += dumb_shadow_offset;
 163
 164         left = clips->x1;
 165         right = clips->x2;
 166         top = clips->y1;
 167         bottom = clips->y2;
 168
 169         /* skip the first clip rect */
 170         for (i = 1, clips_ptr = clips + inc;
 171              i < num_clips; i++, clips_ptr += inc) {
 172                 left = min_t(int, left, (int)clips_ptr->x1);
 173                 right = max_t(int, right, (int)clips_ptr->x2);
 174                 top = min_t(int, top, (int)clips_ptr->y1);
 175                 bottom = max_t(int, bottom, (int)clips_ptr->y2);
 176         }
 177
 178         width = right - left;
 179         height = bottom - top;
 180
 181         ret = alloc_clips(qdev, release, num_clips, &clips_bo);
 182         if (ret)
 183                 goto out_free_drawable;
 184
 185         ret = qxl_image_alloc_objects(qdev, release,
 186                                       &dimage,
 187                                       height, stride);
 188         if (ret)
 189                 goto out_free_clips;
 190
 191         /* do a reservation run over all the objects we just allocated */
 192         ret = qxl_release_reserve_list(release, true);
 193         if (ret)
 194                 goto out_free_image;
 195
 196         drawable_rect.left = left;
 197         drawable_rect.right = right;
 198         drawable_rect.top = top;
 199         drawable_rect.bottom = bottom;
 200
 201         ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
 202                             release);
 203         if (ret)
 204                 goto out_release_backoff;
 205
 206         ret = qxl_bo_vmap_locked(bo, &surface_map);
 207         if (ret)
 208                 goto out_release_backoff;
 209         surface_base = surface_map.vaddr; /* TODO: Use mapping abstraction properly */
 210
 211         ret = qxl_image_init(qdev, release, dimage, surface_base,
 212                              left - dumb_shadow_offset,
 213                              top, width, height, depth, stride);
 214         qxl_bo_vunmap_locked(bo);
 215         if (ret)
 216                 goto out_release_backoff;
 217
 218         rects = drawable_set_clipping(qdev, num_clips, clips_bo);
 219         if (!rects) {
 220                 ret = -EINVAL;
 221                 goto out_release_backoff;
 222         }
 223         drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
 224
 225         drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
 226         drawable->clip.data = qxl_bo_physical_address(qdev,
 227                                                       clips_bo, 0);
 228
 229         drawable->u.copy.src_area.top = 0;
 230         drawable->u.copy.src_area.bottom = height;
 231         drawable->u.copy.src_area.left = 0;
 232         drawable->u.copy.src_area.right = width;
 233
 234         drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
 235         drawable->u.copy.scale_mode = 0;
 236         drawable->u.copy.mask.flags = 0;
 237         drawable->u.copy.mask.pos.x = 0;
 238         drawable->u.copy.mask.pos.y = 0;
 239         drawable->u.copy.mask.bitmap = 0;
 240
 241         drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
 242         qxl_release_unmap(qdev, release, &drawable->release_info);
 243
 244         clips_ptr = clips;
 245         for (i = 0; i < num_clips; i++, clips_ptr += inc) {
 246                 rects[i].left   = clips_ptr->x1;
 247                 rects[i].right  = clips_ptr->x2;
 248                 rects[i].top    = clips_ptr->y1;
 249                 rects[i].bottom = clips_ptr->y2;
 250         }
 251         qxl_bo_vunmap_locked(clips_bo);
 252
 253         qxl_release_fence_buffer_objects(release);
 254         qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
 255
 256 out_release_backoff:
 257         if (ret)
 258                 qxl_release_backoff_reserve_list(release);
 259 out_free_image:
 260         qxl_image_free_objects(qdev, dimage);
 261 out_free_clips:
 262         qxl_bo_unref(&clips_bo);
 263 out_free_drawable:
 264         /* only free drawable on error */
 265         if (ret)
 266                 free_drawable(qdev, release);
 267
 268 }