1 /* 2 * Copyright © 2007 David Airlie 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 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: 24 * David Airlie 25 */ 26 #include <linux/module.h> 27 #include <linux/fb.h> 28 #include <linux/pm_runtime.h> 29 30 #include <drm/drmP.h> 31 #include <drm/drm_crtc.h> 32 #include <drm/drm_crtc_helper.h> 33 #include <drm/radeon_drm.h> 34 #include "radeon.h" 35 36 #include <drm/drm_fb_helper.h> 37 38 #include <linux/vga_switcheroo.h> 39 40 /* object hierarchy - 41 * this contains a helper + a radeon fb 42 * the helper contains a pointer to radeon framebuffer baseclass. 43 */ 44 struct radeon_fbdev { 45 struct drm_fb_helper helper; 46 struct radeon_framebuffer rfb; 47 struct radeon_device *rdev; 48 }; 49 50 #if 0 51 static int 52 radeonfb_open(struct fb_info *info, int user) 53 { 54 struct radeon_fbdev *rfbdev = info->par; 55 struct radeon_device *rdev = rfbdev->rdev; 56 int ret = pm_runtime_get_sync(rdev->ddev->dev); 57 if (ret < 0 && ret != -EACCES) { 58 pm_runtime_mark_last_busy(rdev->ddev->dev); 59 pm_runtime_put_autosuspend(rdev->ddev->dev); 60 return ret; 61 } 62 return 0; 63 } 64 65 static int 66 radeonfb_release(struct fb_info *info, int user) 67 { 68 struct radeon_fbdev *rfbdev = info->par; 69 struct radeon_device *rdev = rfbdev->rdev; 70 71 pm_runtime_mark_last_busy(rdev->ddev->dev); 72 pm_runtime_put_autosuspend(rdev->ddev->dev); 73 return 0; 74 } 75 #endif 76 77 static struct fb_ops radeonfb_ops = { 78 #if 0 79 .owner = THIS_MODULE, 80 #endif 81 DRM_FB_HELPER_DEFAULT_OPS, 82 #if 0 83 .fb_open = radeonfb_open, 84 .fb_release = radeonfb_release, 85 #endif 86 #if 0 87 .fb_fillrect = drm_fb_helper_cfb_fillrect, 88 .fb_copyarea = drm_fb_helper_cfb_copyarea, 89 .fb_imageblit = drm_fb_helper_cfb_imageblit, 90 #endif 91 }; 92 93 94 int radeon_align_pitch(struct radeon_device *rdev, int width, int cpp, bool tiled) 95 { 96 int aligned = width; 97 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; 98 int pitch_mask = 0; 99 100 switch (cpp) { 101 case 1: 102 pitch_mask = align_large ? 255 : 127; 103 break; 104 case 2: 105 pitch_mask = align_large ? 127 : 31; 106 break; 107 case 3: 108 case 4: 109 pitch_mask = align_large ? 63 : 15; 110 break; 111 } 112 113 aligned += pitch_mask; 114 aligned &= ~pitch_mask; 115 return aligned * cpp; 116 } 117 118 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj) 119 { 120 struct radeon_bo *rbo = gem_to_radeon_bo(gobj); 121 int ret; 122 123 ret = radeon_bo_reserve(rbo, false); 124 if (likely(ret == 0)) { 125 radeon_bo_kunmap(rbo); 126 radeon_bo_unpin(rbo); 127 radeon_bo_unreserve(rbo); 128 } 129 drm_gem_object_put_unlocked(gobj); 130 } 131 132 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev, 133 struct drm_mode_fb_cmd2 *mode_cmd, 134 struct drm_gem_object **gobj_p) 135 { 136 struct radeon_device *rdev = rfbdev->rdev; 137 struct drm_gem_object *gobj = NULL; 138 struct radeon_bo *rbo = NULL; 139 bool fb_tiled = false; /* useful for testing */ 140 u32 tiling_flags = 0; 141 int ret; 142 int aligned_size, size; 143 int height = mode_cmd->height; 144 u32 cpp; 145 146 cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 0); 147 148 /* need to align pitch with crtc limits */ 149 mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, cpp, 150 fb_tiled); 151 152 if (rdev->family >= CHIP_R600) 153 height = ALIGN(mode_cmd->height, 8); 154 size = mode_cmd->pitches[0] * height; 155 aligned_size = ALIGN(size, PAGE_SIZE); 156 ret = radeon_gem_object_create(rdev, aligned_size, 0, 157 RADEON_GEM_DOMAIN_VRAM, 158 0, true, &gobj); 159 if (ret) { 160 pr_err("failed to allocate framebuffer (%d)\n", aligned_size); 161 return -ENOMEM; 162 } 163 rbo = gem_to_radeon_bo(gobj); 164 165 if (fb_tiled) 166 tiling_flags = RADEON_TILING_MACRO; 167 168 #ifdef __BIG_ENDIAN 169 switch (cpp) { 170 case 4: 171 tiling_flags |= RADEON_TILING_SWAP_32BIT; 172 break; 173 case 2: 174 tiling_flags |= RADEON_TILING_SWAP_16BIT; 175 default: 176 break; 177 } 178 #endif 179 180 if (tiling_flags) { 181 ret = radeon_bo_set_tiling_flags(rbo, 182 tiling_flags | RADEON_TILING_SURFACE, 183 mode_cmd->pitches[0]); 184 if (ret) 185 dev_err(rdev->dev, "FB failed to set tiling flags\n"); 186 } 187 188 189 ret = radeon_bo_reserve(rbo, false); 190 if (unlikely(ret != 0)) 191 goto out_unref; 192 /* Only 27 bit offset for legacy CRTC */ 193 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 194 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, 195 NULL); 196 if (ret) { 197 radeon_bo_unreserve(rbo); 198 goto out_unref; 199 } 200 if (fb_tiled) 201 radeon_bo_check_tiling(rbo, 0, 0); 202 ret = radeon_bo_kmap(rbo, NULL); 203 radeon_bo_unreserve(rbo); 204 if (ret) { 205 goto out_unref; 206 } 207 208 *gobj_p = gobj; 209 return 0; 210 out_unref: 211 radeonfb_destroy_pinned_object(gobj); 212 *gobj_p = NULL; 213 return ret; 214 } 215 216 static int radeonfb_create(struct drm_fb_helper *helper, 217 struct drm_fb_helper_surface_size *sizes) 218 { 219 struct radeon_fbdev *rfbdev = 220 container_of(helper, struct radeon_fbdev, helper); 221 struct radeon_device *rdev = rfbdev->rdev; 222 struct fb_info *info; 223 struct drm_framebuffer *fb = NULL; 224 struct drm_mode_fb_cmd2 mode_cmd; 225 struct drm_gem_object *gobj = NULL; 226 struct radeon_bo *rbo = NULL; 227 int ret; 228 device_t vga_dev = device_get_parent(rdev->dev->bsddev); 229 230 mode_cmd.width = sizes->surface_width; 231 mode_cmd.height = sizes->surface_height; 232 233 /* avivo can't scanout real 24bpp */ 234 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) 235 sizes->surface_bpp = 32; 236 237 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 238 sizes->surface_depth); 239 240 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj); 241 if (ret) { 242 DRM_ERROR("failed to create fbcon object %d\n", ret); 243 return ret; 244 } 245 246 rbo = gem_to_radeon_bo(gobj); 247 248 /* okay we have an object now allocate the framebuffer */ 249 info = drm_fb_helper_alloc_fbi(helper); 250 if (IS_ERR(info)) { 251 ret = PTR_ERR(info); 252 goto out; 253 } 254 255 info->par = rfbdev; 256 257 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 258 if (ret) { 259 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 260 goto out; 261 } 262 263 fb = &rfbdev->rfb.base; 264 265 /* setup helper */ 266 rfbdev->helper.fb = fb; 267 268 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); 269 270 #ifdef __DragonFly__ 271 info->width = sizes->fb_width; 272 info->height = sizes->fb_height; 273 info->stride = fb->pitches[0]; 274 info->depth = sizes->surface_bpp; 275 info->is_vga_boot_display = vga_pci_is_boot_display(vga_dev); 276 info->fbops = radeonfb_ops; 277 /* We use info->screen_base and info->screen_size would-be values */ 278 #if 0 279 info->paddr = (vm_paddr_t)rbo->kptr; 280 info->vaddr = (vm_offset_t)pmap_mapdev_attr(info->paddr, 281 radeon_bo_size(rbo), 282 VM_MEMATTR_WRITE_COMBINING); 283 #endif 284 unsigned long tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 285 info->vaddr = (vm_offset_t)rbo->kptr; 286 info->paddr = rdev->mc.aper_base + tmp; 287 #else 288 strcpy(info->fix.id, "radeondrmfb"); 289 290 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth); 291 292 info->fbops = &radeonfb_ops; 293 294 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 295 info->fix.smem_start = rdev->mc.aper_base + tmp; 296 info->fix.smem_len = radeon_bo_size(rbo); 297 info->screen_base = rbo->kptr; 298 info->screen_size = radeon_bo_size(rbo); 299 300 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); 301 302 /* setup aperture base/size for vesafb takeover */ 303 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; 304 info->apertures->ranges[0].size = rdev->mc.aper_size; 305 306 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 307 308 if (info->screen_base == NULL) { 309 ret = -ENOSPC; 310 goto out; 311 } 312 #endif 313 314 DRM_INFO("fb mappable at 0x%jX\n", info->paddr); 315 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); 316 DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo)); 317 DRM_INFO("fb depth is %d\n", fb->format->depth); 318 DRM_INFO(" pitch is %d\n", fb->pitches[0]); 319 320 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info); 321 return 0; 322 323 out: 324 if (rbo) { 325 326 } 327 if (fb && ret) { 328 drm_gem_object_put_unlocked(gobj); 329 drm_framebuffer_unregister_private(fb); 330 drm_framebuffer_cleanup(fb); 331 kfree(fb); 332 } 333 return ret; 334 } 335 336 void radeon_fb_output_poll_changed(struct radeon_device *rdev) 337 { 338 if (rdev->mode_info.rfbdev) 339 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); 340 } 341 342 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) 343 { 344 struct radeon_framebuffer *rfb = &rfbdev->rfb; 345 346 drm_fb_helper_unregister_fbi(&rfbdev->helper); 347 348 if (rfb->obj) { 349 radeonfb_destroy_pinned_object(rfb->obj); 350 rfb->obj = NULL; 351 drm_framebuffer_unregister_private(&rfb->base); 352 drm_framebuffer_cleanup(&rfb->base); 353 } 354 drm_fb_helper_fini(&rfbdev->helper); 355 356 return 0; 357 } 358 359 static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = { 360 .fb_probe = radeonfb_create, 361 }; 362 363 int radeon_fbdev_init(struct radeon_device *rdev) 364 { 365 struct radeon_fbdev *rfbdev; 366 int bpp_sel = 32; 367 int ret; 368 369 /* don't enable fbdev if no connectors */ 370 if (list_empty(&rdev->ddev->mode_config.connector_list)) 371 return 0; 372 373 /* select 8 bpp console on 8MB cards, or 16 bpp on RN50 or 32MB */ 374 if (rdev->mc.real_vram_size <= (8*1024*1024)) 375 bpp_sel = 8; 376 else if (ASIC_IS_RN50(rdev) || 377 rdev->mc.real_vram_size <= (32*1024*1024)) 378 bpp_sel = 16; 379 380 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); 381 if (!rfbdev) 382 return -ENOMEM; 383 384 rfbdev->rdev = rdev; 385 rdev->mode_info.rfbdev = rfbdev; 386 387 drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, 388 &radeon_fb_helper_funcs); 389 390 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, 391 RADEONFB_CONN_LIMIT); 392 if (ret) 393 goto free; 394 395 ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper); 396 if (ret) 397 goto fini; 398 399 /* disable all the possible outputs/crtcs before entering KMS mode */ 400 drm_helper_disable_unused_functions(rdev->ddev); 401 402 ret = drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); 403 if (ret) 404 goto fini; 405 406 return 0; 407 408 fini: 409 drm_fb_helper_fini(&rfbdev->helper); 410 free: 411 kfree(rfbdev); 412 return ret; 413 } 414 415 void radeon_fbdev_fini(struct radeon_device *rdev) 416 { 417 if (!rdev->mode_info.rfbdev) 418 return; 419 420 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev); 421 kfree(rdev->mode_info.rfbdev); 422 rdev->mode_info.rfbdev = NULL; 423 } 424 425 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) 426 { 427 #ifdef DUMBBELL_WIP 428 if (rdev->mode_info.rfbdev) 429 drm_fb_helper_set_suspend(&rdev->mode_info.rfbdev->helper, state); 430 #endif /* DUMBBELL_WIP */ 431 } 432 433 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) 434 { 435 if (!rdev->mode_info.rfbdev) 436 return false; 437 438 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj)) 439 return true; 440 return false; 441 } 442 443 void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector) 444 { 445 if (rdev->mode_info.rfbdev) 446 drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector); 447 } 448 449 void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector) 450 { 451 if (rdev->mode_info.rfbdev) 452 drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); 453 } 454 455 void radeon_fbdev_restore_mode(struct radeon_device *rdev) 456 { 457 struct radeon_fbdev *rfbdev = rdev->mode_info.rfbdev; 458 struct drm_fb_helper *fb_helper; 459 int ret; 460 461 if (!rfbdev) 462 return; 463 464 fb_helper = &rfbdev->helper; 465 466 ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); 467 if (ret) 468 DRM_DEBUG("failed to restore crtc mode\n"); 469 } 470