Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 Red Hat, Inc. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining |
| 6 | * a copy of this software and associated documentation files (the |
| 7 | * "Software"), to deal in the Software without restriction, including |
| 8 | * without limitation the rights to use, copy, modify, merge, publish, |
| 9 | * distribute, sublicense, and/or sell copies of the Software, and to |
| 10 | * permit persons to whom the Software is furnished to do so, subject to |
| 11 | * the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice (including the |
| 14 | * next paragraph) shall be included in all copies or substantial |
| 15 | * portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 20 | * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
| 21 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| 22 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 23 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 24 | */ |
| 25 | |
| 26 | #include <drm/drmP.h> |
| 27 | #include <drm/drm_fb_helper.h> |
| 28 | #include "virtgpu_drv.h" |
| 29 | |
| 30 | #define VIRTIO_GPU_FBCON_POLL_PERIOD (HZ / 60) |
| 31 | |
| 32 | struct virtio_gpu_fbdev { |
| 33 | struct drm_fb_helper helper; |
| 34 | struct virtio_gpu_framebuffer vgfb; |
| 35 | struct list_head fbdev_list; |
| 36 | struct virtio_gpu_device *vgdev; |
| 37 | struct delayed_work work; |
| 38 | }; |
| 39 | |
| 40 | static int virtio_gpu_dirty_update(struct virtio_gpu_framebuffer *fb, |
| 41 | bool store, int x, int y, |
| 42 | int width, int height) |
| 43 | { |
| 44 | struct drm_device *dev = fb->base.dev; |
| 45 | struct virtio_gpu_device *vgdev = dev->dev_private; |
| 46 | bool store_for_later = false; |
| 47 | int bpp = fb->base.bits_per_pixel / 8; |
| 48 | int x2, y2; |
| 49 | unsigned long flags; |
| 50 | struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(fb->obj); |
| 51 | |
| 52 | if ((width <= 0) || |
| 53 | (x + width > fb->base.width) || |
| 54 | (y + height > fb->base.height)) { |
| 55 | DRM_DEBUG("values out of range %dx%d+%d+%d, fb %dx%d\n", |
| 56 | width, height, x, y, |
| 57 | fb->base.width, fb->base.height); |
| 58 | return -EINVAL; |
| 59 | } |
| 60 | |
| 61 | /* |
| 62 | * Can be called with pretty much any context (console output |
| 63 | * path). If we are in atomic just store the dirty rect info |
| 64 | * to send out the update later. |
| 65 | * |
| 66 | * Can't test inside spin lock. |
| 67 | */ |
| 68 | if (in_atomic() || store) |
| 69 | store_for_later = true; |
| 70 | |
| 71 | x2 = x + width - 1; |
| 72 | y2 = y + height - 1; |
| 73 | |
| 74 | spin_lock_irqsave(&fb->dirty_lock, flags); |
| 75 | |
| 76 | if (fb->y1 < y) |
| 77 | y = fb->y1; |
| 78 | if (fb->y2 > y2) |
| 79 | y2 = fb->y2; |
| 80 | if (fb->x1 < x) |
| 81 | x = fb->x1; |
| 82 | if (fb->x2 > x2) |
| 83 | x2 = fb->x2; |
| 84 | |
| 85 | if (store_for_later) { |
| 86 | fb->x1 = x; |
| 87 | fb->x2 = x2; |
| 88 | fb->y1 = y; |
| 89 | fb->y2 = y2; |
| 90 | spin_unlock_irqrestore(&fb->dirty_lock, flags); |
| 91 | return 0; |
| 92 | } |
| 93 | |
| 94 | fb->x1 = fb->y1 = INT_MAX; |
| 95 | fb->x2 = fb->y2 = 0; |
| 96 | |
| 97 | spin_unlock_irqrestore(&fb->dirty_lock, flags); |
| 98 | |
| 99 | { |
| 100 | uint32_t offset; |
| 101 | uint32_t w = x2 - x + 1; |
| 102 | uint32_t h = y2 - y + 1; |
| 103 | |
| 104 | offset = (y * fb->base.pitches[0]) + x * bpp; |
| 105 | |
| 106 | virtio_gpu_cmd_transfer_to_host_2d(vgdev, obj->hw_res_handle, |
| 107 | offset, |
| 108 | cpu_to_le32(w), |
| 109 | cpu_to_le32(h), |
| 110 | cpu_to_le32(x), |
| 111 | cpu_to_le32(y), |
| 112 | NULL); |
| 113 | |
| 114 | } |
| 115 | virtio_gpu_cmd_resource_flush(vgdev, obj->hw_res_handle, |
| 116 | x, y, x2 - x + 1, y2 - y + 1); |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *vgfb, |
| 121 | struct drm_clip_rect *clips, |
| 122 | unsigned num_clips) |
| 123 | { |
| 124 | struct virtio_gpu_device *vgdev = vgfb->base.dev->dev_private; |
| 125 | struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(vgfb->obj); |
| 126 | struct drm_clip_rect norect; |
| 127 | struct drm_clip_rect *clips_ptr; |
| 128 | int left, right, top, bottom; |
| 129 | int i; |
| 130 | int inc = 1; |
| 131 | if (!num_clips) { |
| 132 | num_clips = 1; |
| 133 | clips = &norect; |
| 134 | norect.x1 = norect.y1 = 0; |
| 135 | norect.x2 = vgfb->base.width; |
| 136 | norect.y2 = vgfb->base.height; |
| 137 | } |
| 138 | left = clips->x1; |
| 139 | right = clips->x2; |
| 140 | top = clips->y1; |
| 141 | bottom = clips->y2; |
| 142 | |
| 143 | /* skip the first clip rect */ |
| 144 | for (i = 1, clips_ptr = clips + inc; |
| 145 | i < num_clips; i++, clips_ptr += inc) { |
| 146 | left = min_t(int, left, (int)clips_ptr->x1); |
| 147 | right = max_t(int, right, (int)clips_ptr->x2); |
| 148 | top = min_t(int, top, (int)clips_ptr->y1); |
| 149 | bottom = max_t(int, bottom, (int)clips_ptr->y2); |
| 150 | } |
| 151 | |
| 152 | if (obj->dumb) |
| 153 | return virtio_gpu_dirty_update(vgfb, false, left, top, |
| 154 | right - left, bottom - top); |
| 155 | |
| 156 | virtio_gpu_cmd_resource_flush(vgdev, obj->hw_res_handle, |
| 157 | left, top, right - left, bottom - top); |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static void virtio_gpu_fb_dirty_work(struct work_struct *work) |
| 162 | { |
| 163 | struct delayed_work *delayed_work = to_delayed_work(work); |
| 164 | struct virtio_gpu_fbdev *vfbdev = |
| 165 | container_of(delayed_work, struct virtio_gpu_fbdev, work); |
| 166 | struct virtio_gpu_framebuffer *vgfb = &vfbdev->vgfb; |
| 167 | |
| 168 | virtio_gpu_dirty_update(&vfbdev->vgfb, false, vgfb->x1, vgfb->y1, |
| 169 | vgfb->x2 - vgfb->x1, vgfb->y2 - vgfb->y1); |
| 170 | } |
| 171 | |
| 172 | static void virtio_gpu_3d_fillrect(struct fb_info *info, |
| 173 | const struct fb_fillrect *rect) |
| 174 | { |
| 175 | struct virtio_gpu_fbdev *vfbdev = info->par; |
Archit Taneja | 0843010 | 2015-07-31 16:22:01 +0530 | [diff] [blame] | 176 | drm_fb_helper_sys_fillrect(info, rect); |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 177 | virtio_gpu_dirty_update(&vfbdev->vgfb, true, rect->dx, rect->dy, |
| 178 | rect->width, rect->height); |
| 179 | schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD); |
| 180 | } |
| 181 | |
| 182 | static void virtio_gpu_3d_copyarea(struct fb_info *info, |
| 183 | const struct fb_copyarea *area) |
| 184 | { |
| 185 | struct virtio_gpu_fbdev *vfbdev = info->par; |
Archit Taneja | 0843010 | 2015-07-31 16:22:01 +0530 | [diff] [blame] | 186 | drm_fb_helper_sys_copyarea(info, area); |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 187 | virtio_gpu_dirty_update(&vfbdev->vgfb, true, area->dx, area->dy, |
| 188 | area->width, area->height); |
| 189 | schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD); |
| 190 | } |
| 191 | |
| 192 | static void virtio_gpu_3d_imageblit(struct fb_info *info, |
| 193 | const struct fb_image *image) |
| 194 | { |
| 195 | struct virtio_gpu_fbdev *vfbdev = info->par; |
Archit Taneja | 0843010 | 2015-07-31 16:22:01 +0530 | [diff] [blame] | 196 | drm_fb_helper_sys_imageblit(info, image); |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 197 | virtio_gpu_dirty_update(&vfbdev->vgfb, true, image->dx, image->dy, |
| 198 | image->width, image->height); |
| 199 | schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD); |
| 200 | } |
| 201 | |
| 202 | static struct fb_ops virtio_gpufb_ops = { |
| 203 | .owner = THIS_MODULE, |
| 204 | .fb_check_var = drm_fb_helper_check_var, |
| 205 | .fb_set_par = drm_fb_helper_set_par, /* TODO: copy vmwgfx */ |
| 206 | .fb_fillrect = virtio_gpu_3d_fillrect, |
| 207 | .fb_copyarea = virtio_gpu_3d_copyarea, |
| 208 | .fb_imageblit = virtio_gpu_3d_imageblit, |
| 209 | .fb_pan_display = drm_fb_helper_pan_display, |
| 210 | .fb_blank = drm_fb_helper_blank, |
| 211 | .fb_setcmap = drm_fb_helper_setcmap, |
| 212 | .fb_debug_enter = drm_fb_helper_debug_enter, |
| 213 | .fb_debug_leave = drm_fb_helper_debug_leave, |
| 214 | }; |
| 215 | |
| 216 | static int virtio_gpu_vmap_fb(struct virtio_gpu_device *vgdev, |
| 217 | struct virtio_gpu_object *obj) |
| 218 | { |
| 219 | return virtio_gpu_object_kmap(obj, NULL); |
| 220 | } |
| 221 | |
| 222 | static int virtio_gpufb_create(struct drm_fb_helper *helper, |
| 223 | struct drm_fb_helper_surface_size *sizes) |
| 224 | { |
| 225 | struct virtio_gpu_fbdev *vfbdev = |
| 226 | container_of(helper, struct virtio_gpu_fbdev, helper); |
| 227 | struct drm_device *dev = helper->dev; |
| 228 | struct virtio_gpu_device *vgdev = dev->dev_private; |
| 229 | struct fb_info *info; |
| 230 | struct drm_framebuffer *fb; |
| 231 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
| 232 | struct virtio_gpu_object *obj; |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 233 | uint32_t resid, format, size; |
| 234 | int ret; |
| 235 | |
| 236 | mode_cmd.width = sizes->surface_width; |
| 237 | mode_cmd.height = sizes->surface_height; |
| 238 | mode_cmd.pitches[0] = mode_cmd.width * 4; |
| 239 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(32, 24); |
| 240 | |
| 241 | switch (mode_cmd.pixel_format) { |
| 242 | #ifdef __BIG_ENDIAN |
| 243 | case DRM_FORMAT_XRGB8888: |
| 244 | format = VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM; |
| 245 | break; |
| 246 | case DRM_FORMAT_ARGB8888: |
| 247 | format = VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM; |
| 248 | break; |
| 249 | case DRM_FORMAT_BGRX8888: |
| 250 | format = VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM; |
| 251 | break; |
| 252 | case DRM_FORMAT_BGRA8888: |
| 253 | format = VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM; |
| 254 | break; |
| 255 | case DRM_FORMAT_RGBX8888: |
| 256 | format = VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM; |
| 257 | break; |
| 258 | case DRM_FORMAT_RGBA8888: |
| 259 | format = VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM; |
| 260 | break; |
| 261 | case DRM_FORMAT_XBGR8888: |
| 262 | format = VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM; |
| 263 | break; |
| 264 | case DRM_FORMAT_ABGR8888: |
| 265 | format = VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM; |
| 266 | break; |
| 267 | #else |
| 268 | case DRM_FORMAT_XRGB8888: |
| 269 | format = VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM; |
| 270 | break; |
| 271 | case DRM_FORMAT_ARGB8888: |
| 272 | format = VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM; |
| 273 | break; |
| 274 | case DRM_FORMAT_BGRX8888: |
| 275 | format = VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM; |
| 276 | break; |
| 277 | case DRM_FORMAT_BGRA8888: |
| 278 | format = VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM; |
| 279 | break; |
| 280 | case DRM_FORMAT_RGBX8888: |
| 281 | format = VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM; |
| 282 | break; |
| 283 | case DRM_FORMAT_RGBA8888: |
| 284 | format = VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM; |
| 285 | break; |
| 286 | case DRM_FORMAT_XBGR8888: |
| 287 | format = VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM; |
| 288 | break; |
| 289 | case DRM_FORMAT_ABGR8888: |
| 290 | format = VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM; |
| 291 | break; |
| 292 | #endif |
| 293 | default: |
| 294 | DRM_ERROR("failed to find virtio gpu format for %d\n", |
| 295 | mode_cmd.pixel_format); |
| 296 | return -EINVAL; |
| 297 | } |
| 298 | |
| 299 | size = mode_cmd.pitches[0] * mode_cmd.height; |
| 300 | obj = virtio_gpu_alloc_object(dev, size, false, true); |
Dan Carpenter | 2b7edca | 2015-06-10 22:27:11 +0300 | [diff] [blame] | 301 | if (IS_ERR(obj)) |
| 302 | return PTR_ERR(obj); |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 303 | |
| 304 | virtio_gpu_resource_id_get(vgdev, &resid); |
| 305 | virtio_gpu_cmd_create_resource(vgdev, resid, format, |
| 306 | mode_cmd.width, mode_cmd.height); |
| 307 | |
| 308 | ret = virtio_gpu_vmap_fb(vgdev, obj); |
| 309 | if (ret) { |
| 310 | DRM_ERROR("failed to vmap fb %d\n", ret); |
| 311 | goto err_obj_vmap; |
| 312 | } |
| 313 | |
| 314 | /* attach the object to the resource */ |
| 315 | ret = virtio_gpu_object_attach(vgdev, obj, resid, NULL); |
| 316 | if (ret) |
| 317 | goto err_obj_attach; |
| 318 | |
Archit Taneja | 0843010 | 2015-07-31 16:22:01 +0530 | [diff] [blame] | 319 | info = drm_fb_helper_alloc_fbi(helper); |
| 320 | if (IS_ERR(info)) { |
| 321 | ret = PTR_ERR(info); |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 322 | goto err_fb_alloc; |
| 323 | } |
| 324 | |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 325 | info->par = helper; |
| 326 | |
| 327 | ret = virtio_gpu_framebuffer_init(dev, &vfbdev->vgfb, |
| 328 | &mode_cmd, &obj->gem_base); |
| 329 | if (ret) |
| 330 | goto err_fb_init; |
| 331 | |
| 332 | fb = &vfbdev->vgfb.base; |
| 333 | |
| 334 | vfbdev->helper.fb = fb; |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 335 | |
| 336 | strcpy(info->fix.id, "virtiodrmfb"); |
| 337 | info->flags = FBINFO_DEFAULT; |
| 338 | info->fbops = &virtio_gpufb_ops; |
| 339 | info->pixmap.flags = FB_PIXMAP_SYSTEM; |
| 340 | |
| 341 | info->screen_base = obj->vmap; |
| 342 | info->screen_size = obj->gem_base.size; |
| 343 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
| 344 | drm_fb_helper_fill_var(info, &vfbdev->helper, |
| 345 | sizes->fb_width, sizes->fb_height); |
| 346 | |
| 347 | info->fix.mmio_start = 0; |
| 348 | info->fix.mmio_len = 0; |
| 349 | return 0; |
| 350 | |
| 351 | err_fb_init: |
Archit Taneja | 0843010 | 2015-07-31 16:22:01 +0530 | [diff] [blame] | 352 | drm_fb_helper_release_fbi(helper); |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 353 | err_fb_alloc: |
| 354 | virtio_gpu_cmd_resource_inval_backing(vgdev, resid); |
| 355 | err_obj_attach: |
| 356 | err_obj_vmap: |
| 357 | virtio_gpu_gem_free_object(&obj->gem_base); |
| 358 | return ret; |
| 359 | } |
| 360 | |
| 361 | static int virtio_gpu_fbdev_destroy(struct drm_device *dev, |
| 362 | struct virtio_gpu_fbdev *vgfbdev) |
| 363 | { |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 364 | struct virtio_gpu_framebuffer *vgfb = &vgfbdev->vgfb; |
| 365 | |
Archit Taneja | 0843010 | 2015-07-31 16:22:01 +0530 | [diff] [blame] | 366 | drm_fb_helper_unregister_fbi(&vgfbdev->helper); |
| 367 | drm_fb_helper_release_fbi(&vgfbdev->helper); |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 368 | |
Dave Airlie | dc5698e | 2013-09-09 10:02:56 +1000 | [diff] [blame] | 369 | if (vgfb->obj) |
| 370 | vgfb->obj = NULL; |
| 371 | drm_fb_helper_fini(&vgfbdev->helper); |
| 372 | drm_framebuffer_cleanup(&vgfb->base); |
| 373 | |
| 374 | return 0; |
| 375 | } |
| 376 | static struct drm_fb_helper_funcs virtio_gpu_fb_helper_funcs = { |
| 377 | .fb_probe = virtio_gpufb_create, |
| 378 | }; |
| 379 | |
| 380 | int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev) |
| 381 | { |
| 382 | struct virtio_gpu_fbdev *vgfbdev; |
| 383 | int bpp_sel = 32; /* TODO: parameter from somewhere? */ |
| 384 | int ret; |
| 385 | |
| 386 | vgfbdev = kzalloc(sizeof(struct virtio_gpu_fbdev), GFP_KERNEL); |
| 387 | if (!vgfbdev) |
| 388 | return -ENOMEM; |
| 389 | |
| 390 | vgfbdev->vgdev = vgdev; |
| 391 | vgdev->vgfbdev = vgfbdev; |
| 392 | INIT_DELAYED_WORK(&vgfbdev->work, virtio_gpu_fb_dirty_work); |
| 393 | |
| 394 | drm_fb_helper_prepare(vgdev->ddev, &vgfbdev->helper, |
| 395 | &virtio_gpu_fb_helper_funcs); |
| 396 | ret = drm_fb_helper_init(vgdev->ddev, &vgfbdev->helper, |
| 397 | vgdev->num_scanouts, |
| 398 | VIRTIO_GPUFB_CONN_LIMIT); |
| 399 | if (ret) { |
| 400 | kfree(vgfbdev); |
| 401 | return ret; |
| 402 | } |
| 403 | |
| 404 | drm_fb_helper_single_add_all_connectors(&vgfbdev->helper); |
| 405 | drm_fb_helper_initial_config(&vgfbdev->helper, bpp_sel); |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev) |
| 410 | { |
| 411 | if (!vgdev->vgfbdev) |
| 412 | return; |
| 413 | |
| 414 | virtio_gpu_fbdev_destroy(vgdev->ddev, vgdev->vgfbdev); |
| 415 | kfree(vgdev->vgfbdev); |
| 416 | vgdev->vgfbdev = NULL; |
| 417 | } |