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 .fb_open = radeonfb_open, 81 .fb_release = radeonfb_release, 82 .fb_check_var = drm_fb_helper_check_var, 83 #endif 84 .fb_set_par = drm_fb_helper_set_par, 85 #if 0 86 .fb_fillrect = drm_fb_helper_cfb_fillrect, 87 .fb_copyarea = drm_fb_helper_cfb_copyarea, 88 .fb_imageblit = drm_fb_helper_cfb_imageblit, 89 .fb_pan_display = drm_fb_helper_pan_display, 90 #endif 91 .fb_blank = drm_fb_helper_blank, 92 #if 0 93 .fb_setcmap = drm_fb_helper_setcmap, 94 #endif 95 .fb_debug_enter = drm_fb_helper_debug_enter, 96 #if 0 97 .fb_debug_leave = drm_fb_helper_debug_leave, 98 #endif 99 }; 100 101 102 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled) 103 { 104 int aligned = width; 105 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; 106 int pitch_mask = 0; 107 108 switch (bpp / 8) { 109 case 1: 110 pitch_mask = align_large ? 255 : 127; 111 break; 112 case 2: 113 pitch_mask = align_large ? 127 : 31; 114 break; 115 case 3: 116 case 4: 117 pitch_mask = align_large ? 63 : 15; 118 break; 119 } 120 121 aligned += pitch_mask; 122 aligned &= ~pitch_mask; 123 return aligned; 124 } 125 126 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj) 127 { 128 struct radeon_bo *rbo = gem_to_radeon_bo(gobj); 129 int ret; 130 131 ret = radeon_bo_reserve(rbo, false); 132 if (likely(ret == 0)) { 133 radeon_bo_kunmap(rbo); 134 radeon_bo_unpin(rbo); 135 radeon_bo_unreserve(rbo); 136 } 137 drm_gem_object_unreference_unlocked(gobj); 138 } 139 140 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev, 141 struct drm_mode_fb_cmd2 *mode_cmd, 142 struct drm_gem_object **gobj_p) 143 { 144 struct radeon_device *rdev = rfbdev->rdev; 145 struct drm_gem_object *gobj = NULL; 146 struct radeon_bo *rbo = NULL; 147 bool fb_tiled = false; /* useful for testing */ 148 u32 tiling_flags = 0; 149 int ret; 150 int aligned_size, size; 151 int height = mode_cmd->height; 152 u32 bpp, depth; 153 154 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); 155 156 /* need to align pitch with crtc limits */ 157 mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp, 158 fb_tiled) * ((bpp + 1) / 8); 159 160 if (rdev->family >= CHIP_R600) 161 height = ALIGN(mode_cmd->height, 8); 162 size = mode_cmd->pitches[0] * height; 163 aligned_size = ALIGN(size, PAGE_SIZE); 164 ret = radeon_gem_object_create(rdev, aligned_size, 0, 165 RADEON_GEM_DOMAIN_VRAM, 166 0, true, &gobj); 167 if (ret) { 168 printk(KERN_ERR "failed to allocate framebuffer (%d)\n", 169 aligned_size); 170 return -ENOMEM; 171 } 172 rbo = gem_to_radeon_bo(gobj); 173 174 if (fb_tiled) 175 tiling_flags = RADEON_TILING_MACRO; 176 177 #ifdef __BIG_ENDIAN 178 switch (bpp) { 179 case 32: 180 tiling_flags |= RADEON_TILING_SWAP_32BIT; 181 break; 182 case 16: 183 tiling_flags |= RADEON_TILING_SWAP_16BIT; 184 default: 185 break; 186 } 187 #endif 188 189 if (tiling_flags) { 190 ret = radeon_bo_set_tiling_flags(rbo, 191 tiling_flags | RADEON_TILING_SURFACE, 192 mode_cmd->pitches[0]); 193 if (ret) 194 dev_err(rdev->dev, "FB failed to set tiling flags\n"); 195 } 196 197 198 ret = radeon_bo_reserve(rbo, false); 199 if (unlikely(ret != 0)) 200 goto out_unref; 201 /* Only 27 bit offset for legacy CRTC */ 202 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 203 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, 204 NULL); 205 if (ret) { 206 radeon_bo_unreserve(rbo); 207 goto out_unref; 208 } 209 if (fb_tiled) 210 radeon_bo_check_tiling(rbo, 0, 0); 211 ret = radeon_bo_kmap(rbo, NULL); 212 radeon_bo_unreserve(rbo); 213 if (ret) { 214 goto out_unref; 215 } 216 217 *gobj_p = gobj; 218 return 0; 219 out_unref: 220 radeonfb_destroy_pinned_object(gobj); 221 *gobj_p = NULL; 222 return ret; 223 } 224 225 static int radeonfb_create(struct drm_fb_helper *helper, 226 struct drm_fb_helper_surface_size *sizes) 227 { 228 struct radeon_fbdev *rfbdev = 229 container_of(helper, struct radeon_fbdev, helper); 230 struct radeon_device *rdev = rfbdev->rdev; 231 struct fb_info *info; 232 struct drm_framebuffer *fb = NULL; 233 struct drm_mode_fb_cmd2 mode_cmd; 234 struct drm_gem_object *gobj = NULL; 235 struct radeon_bo *rbo = NULL; 236 int ret; 237 device_t vga_dev = device_get_parent(rdev->dev->bsddev); 238 239 mode_cmd.width = sizes->surface_width; 240 mode_cmd.height = sizes->surface_height; 241 242 /* avivo can't scanout real 24bpp */ 243 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) 244 sizes->surface_bpp = 32; 245 246 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 247 sizes->surface_depth); 248 249 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj); 250 if (ret) { 251 DRM_ERROR("failed to create fbcon object %d\n", ret); 252 return ret; 253 } 254 255 rbo = gem_to_radeon_bo(gobj); 256 257 /* okay we have an object now allocate the framebuffer */ 258 info = drm_fb_helper_alloc_fbi(helper); 259 if (IS_ERR(info)) { 260 ret = PTR_ERR(info); 261 goto out_unref; 262 } 263 264 info->par = rfbdev; 265 266 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 267 if (ret) { 268 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 269 goto out_destroy_fbi; 270 } 271 272 fb = &rfbdev->rfb.base; 273 274 /* setup helper */ 275 rfbdev->helper.fb = fb; 276 277 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); 278 279 #ifdef __DragonFly__ 280 info->width = sizes->fb_width; 281 info->height = sizes->fb_height; 282 info->stride = fb->pitches[0]; 283 info->depth = sizes->surface_bpp; 284 info->is_vga_boot_display = vga_pci_is_boot_display(vga_dev); 285 info->fbops = radeonfb_ops; 286 /* We use info->screen_base and info->screen_size would-be values */ 287 #if 0 288 info->paddr = (vm_paddr_t)rbo->kptr; 289 info->vaddr = (vm_offset_t)pmap_mapdev_attr(info->paddr, 290 radeon_bo_size(rbo), 291 VM_MEMATTR_WRITE_COMBINING); 292 #endif 293 unsigned long tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 294 info->vaddr = (vm_offset_t)rbo->kptr; 295 info->paddr = rdev->mc.aper_base + tmp; 296 #else 297 strcpy(info->fix.id, "radeondrmfb"); 298 299 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 300 301 info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; 302 info->fbops = &radeonfb_ops; 303 304 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 305 info->fix.smem_start = rdev->mc.aper_base + tmp; 306 info->fix.smem_len = radeon_bo_size(rbo); 307 info->screen_base = rbo->kptr; 308 info->screen_size = radeon_bo_size(rbo); 309 310 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); 311 312 /* setup aperture base/size for vesafb takeover */ 313 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; 314 info->apertures->ranges[0].size = rdev->mc.aper_size; 315 316 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 317 318 if (info->screen_base == NULL) { 319 ret = -ENOSPC; 320 goto out_destroy_fbi; 321 } 322 #endif 323 324 DRM_INFO("fb mappable at 0x%jX\n", info->paddr); 325 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); 326 DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo)); 327 DRM_INFO("fb depth is %d\n", fb->depth); 328 DRM_INFO(" pitch is %d\n", fb->pitches[0]); 329 330 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info); 331 return 0; 332 333 out_destroy_fbi: 334 drm_fb_helper_release_fbi(helper); 335 out_unref: 336 if (rbo) { 337 338 } 339 if (fb && ret) { 340 drm_gem_object_unreference_unlocked(gobj); 341 drm_framebuffer_unregister_private(fb); 342 drm_framebuffer_cleanup(fb); 343 kfree(fb); 344 } 345 return ret; 346 } 347 348 void radeon_fb_output_poll_changed(struct radeon_device *rdev) 349 { 350 if (rdev->mode_info.rfbdev) 351 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); 352 } 353 354 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) 355 { 356 struct radeon_framebuffer *rfb = &rfbdev->rfb; 357 358 drm_fb_helper_unregister_fbi(&rfbdev->helper); 359 drm_fb_helper_release_fbi(&rfbdev->helper); 360 361 if (rfb->obj) { 362 radeonfb_destroy_pinned_object(rfb->obj); 363 rfb->obj = NULL; 364 } 365 drm_fb_helper_fini(&rfbdev->helper); 366 drm_framebuffer_unregister_private(&rfb->base); 367 drm_framebuffer_cleanup(&rfb->base); 368 369 return 0; 370 } 371 372 static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = { 373 .gamma_set = radeon_crtc_fb_gamma_set, 374 .gamma_get = radeon_crtc_fb_gamma_get, 375 .fb_probe = radeonfb_create, 376 }; 377 378 int radeon_fbdev_init(struct radeon_device *rdev) 379 { 380 struct radeon_fbdev *rfbdev; 381 int bpp_sel = 32; 382 int ret; 383 384 /* don't enable fbdev if no connectors */ 385 if (list_empty(&rdev->ddev->mode_config.connector_list)) 386 return 0; 387 388 /* select 8 bpp console on RN50 or 16MB cards */ 389 if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024)) 390 bpp_sel = 8; 391 392 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); 393 if (!rfbdev) 394 return -ENOMEM; 395 396 rfbdev->rdev = rdev; 397 rdev->mode_info.rfbdev = rfbdev; 398 399 drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, 400 &radeon_fb_helper_funcs); 401 402 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, 403 rdev->num_crtc, 404 RADEONFB_CONN_LIMIT); 405 if (ret) 406 goto free; 407 408 ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper); 409 if (ret) 410 goto fini; 411 412 /* disable all the possible outputs/crtcs before entering KMS mode */ 413 drm_helper_disable_unused_functions(rdev->ddev); 414 415 ret = drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); 416 if (ret) 417 goto fini; 418 419 return 0; 420 421 fini: 422 drm_fb_helper_fini(&rfbdev->helper); 423 free: 424 kfree(rfbdev); 425 return ret; 426 } 427 428 void radeon_fbdev_fini(struct radeon_device *rdev) 429 { 430 if (!rdev->mode_info.rfbdev) 431 return; 432 433 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev); 434 kfree(rdev->mode_info.rfbdev); 435 rdev->mode_info.rfbdev = NULL; 436 } 437 438 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) 439 { 440 #ifdef DUMBBELL_WIP 441 if (rdev->mode_info.rfbdev) 442 drm_fb_helper_set_suspend(&rdev->mode_info.rfbdev->helper, state); 443 #endif /* DUMBBELL_WIP */ 444 } 445 446 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) 447 { 448 if (!rdev->mode_info.rfbdev) 449 return false; 450 451 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj)) 452 return true; 453 return false; 454 } 455 456 void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector) 457 { 458 if (rdev->mode_info.rfbdev) 459 drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector); 460 } 461 462 void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector) 463 { 464 if (rdev->mode_info.rfbdev) 465 drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); 466 } 467 468 void radeon_fbdev_restore_mode(struct radeon_device *rdev) 469 { 470 struct radeon_fbdev *rfbdev = rdev->mode_info.rfbdev; 471 struct drm_fb_helper *fb_helper; 472 int ret; 473 474 if (!rfbdev) 475 return; 476 477 fb_helper = &rfbdev->helper; 478 479 ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); 480 if (ret) 481 DRM_DEBUG("failed to restore crtc mode\n"); 482 } 483