radeon_fb.c revision 1.5.20.1
1 /* $NetBSD: radeon_fb.c,v 1.5.20.1 2019/06/10 22:08:26 christos Exp $ */ 2 3 /* 4 * Copyright 2007 David Airlie 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * David Airlie 27 */ 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: radeon_fb.c,v 1.5.20.1 2019/06/10 22:08:26 christos Exp $"); 30 31 #include <linux/module.h> 32 #include <linux/slab.h> 33 #include <linux/fb.h> 34 35 #include <drm/drmP.h> 36 #include <drm/drm_crtc.h> 37 #include <drm/drm_crtc_helper.h> 38 #include <drm/radeon_drm.h> 39 #include "radeon.h" 40 41 #include <drm/drm_fb_helper.h> 42 43 #include <linux/vga_switcheroo.h> 44 45 #ifdef __NetBSD__ 46 #include "radeondrmkmsfb.h" 47 #endif 48 49 /* object hierarchy - 50 this contains a helper + a radeon fb 51 the helper contains a pointer to radeon framebuffer baseclass. 52 */ 53 struct radeon_fbdev { 54 struct drm_fb_helper helper; 55 struct radeon_framebuffer rfb; 56 struct list_head fbdev_list; 57 struct radeon_device *rdev; 58 }; 59 60 #ifndef __NetBSD__ 61 static struct fb_ops radeonfb_ops = { 62 .owner = THIS_MODULE, 63 .fb_check_var = drm_fb_helper_check_var, 64 .fb_set_par = drm_fb_helper_set_par, 65 .fb_fillrect = drm_fb_helper_cfb_fillrect, 66 .fb_copyarea = drm_fb_helper_cfb_copyarea, 67 .fb_imageblit = drm_fb_helper_cfb_imageblit, 68 .fb_pan_display = drm_fb_helper_pan_display, 69 .fb_blank = drm_fb_helper_blank, 70 .fb_setcmap = drm_fb_helper_setcmap, 71 .fb_debug_enter = drm_fb_helper_debug_enter, 72 .fb_debug_leave = drm_fb_helper_debug_leave, 73 }; 74 #endif 75 76 77 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled) 78 { 79 int aligned = width; 80 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; 81 int pitch_mask = 0; 82 83 switch (bpp / 8) { 84 case 1: 85 pitch_mask = align_large ? 255 : 127; 86 break; 87 case 2: 88 pitch_mask = align_large ? 127 : 31; 89 break; 90 case 3: 91 case 4: 92 pitch_mask = align_large ? 63 : 15; 93 break; 94 } 95 96 aligned += pitch_mask; 97 aligned &= ~pitch_mask; 98 return aligned; 99 } 100 101 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj) 102 { 103 struct radeon_bo *rbo = gem_to_radeon_bo(gobj); 104 int ret; 105 106 ret = radeon_bo_reserve(rbo, false); 107 if (likely(ret == 0)) { 108 radeon_bo_kunmap(rbo); 109 radeon_bo_unpin(rbo); 110 radeon_bo_unreserve(rbo); 111 } 112 drm_gem_object_unreference_unlocked(gobj); 113 } 114 115 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev, 116 struct drm_mode_fb_cmd2 *mode_cmd, 117 struct drm_gem_object **gobj_p) 118 { 119 struct radeon_device *rdev = rfbdev->rdev; 120 struct drm_gem_object *gobj = NULL; 121 struct radeon_bo *rbo = NULL; 122 bool fb_tiled = false; /* useful for testing */ 123 u32 tiling_flags = 0; 124 int ret; 125 int aligned_size, size; 126 int height = mode_cmd->height; 127 u32 bpp, depth; 128 129 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); 130 131 /* need to align pitch with crtc limits */ 132 mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp, 133 fb_tiled) * ((bpp + 1) / 8); 134 135 if (rdev->family >= CHIP_R600) 136 #ifdef __NetBSD__ /* XXX ALIGN means something else. */ 137 height = round_up(mode_cmd->height, 8); 138 #else 139 height = ALIGN(mode_cmd->height, 8); 140 #endif 141 size = mode_cmd->pitches[0] * height; 142 #ifdef __NetBSD__ /* XXX ALIGN means something else. */ 143 aligned_size = round_up(size, PAGE_SIZE); 144 #else 145 aligned_size = ALIGN(size, PAGE_SIZE); 146 #endif 147 ret = radeon_gem_object_create(rdev, aligned_size, 0, 148 RADEON_GEM_DOMAIN_VRAM, 149 0, true, &gobj); 150 if (ret) { 151 printk(KERN_ERR "failed to allocate framebuffer (%d)\n", 152 aligned_size); 153 return -ENOMEM; 154 } 155 rbo = gem_to_radeon_bo(gobj); 156 157 if (fb_tiled) 158 tiling_flags = RADEON_TILING_MACRO; 159 160 #ifdef __BIG_ENDIAN 161 switch (bpp) { 162 case 32: 163 tiling_flags |= RADEON_TILING_SWAP_32BIT; 164 break; 165 case 16: 166 tiling_flags |= RADEON_TILING_SWAP_16BIT; 167 default: 168 break; 169 } 170 #endif 171 172 if (tiling_flags) { 173 ret = radeon_bo_set_tiling_flags(rbo, 174 tiling_flags | RADEON_TILING_SURFACE, 175 mode_cmd->pitches[0]); 176 if (ret) 177 dev_err(rdev->dev, "FB failed to set tiling flags\n"); 178 } 179 180 181 ret = radeon_bo_reserve(rbo, false); 182 if (unlikely(ret != 0)) 183 goto out_unref; 184 /* Only 27 bit offset for legacy CRTC */ 185 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 186 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, 187 NULL); 188 if (ret) { 189 radeon_bo_unreserve(rbo); 190 goto out_unref; 191 } 192 if (fb_tiled) 193 radeon_bo_check_tiling(rbo, 0, 0); 194 ret = radeon_bo_kmap(rbo, NULL); 195 radeon_bo_unreserve(rbo); 196 if (ret) { 197 goto out_unref; 198 } 199 200 *gobj_p = gobj; 201 return 0; 202 out_unref: 203 radeonfb_destroy_pinned_object(gobj); 204 *gobj_p = NULL; 205 return ret; 206 } 207 208 static int radeonfb_create(struct drm_fb_helper *helper, 209 struct drm_fb_helper_surface_size *sizes) 210 { 211 struct radeon_fbdev *rfbdev = 212 container_of(helper, struct radeon_fbdev, helper); 213 struct radeon_device *rdev = rfbdev->rdev; 214 #ifndef __NetBSD__ 215 struct fb_info *info; 216 #endif 217 struct drm_framebuffer *fb = NULL; 218 struct drm_mode_fb_cmd2 mode_cmd; 219 struct drm_gem_object *gobj = NULL; 220 struct radeon_bo *rbo = NULL; 221 int ret; 222 #ifndef __NetBSD__ 223 unsigned long tmp; 224 #endif 225 226 mode_cmd.width = sizes->surface_width; 227 mode_cmd.height = sizes->surface_height; 228 229 /* avivo can't scanout real 24bpp */ 230 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) 231 sizes->surface_bpp = 32; 232 233 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 234 sizes->surface_depth); 235 236 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj); 237 if (ret) { 238 DRM_ERROR("failed to create fbcon object %d\n", ret); 239 return ret; 240 } 241 242 rbo = gem_to_radeon_bo(gobj); 243 244 #ifdef __NetBSD__ 245 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 246 if (ret) { 247 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 248 goto out_unref; 249 } 250 251 (void)memset(rbo->kptr, 0, radeon_bo_size(rbo)); 252 253 { 254 static const struct radeonfb_attach_args zero_rfa; 255 struct radeonfb_attach_args rfa = zero_rfa; 256 257 rfa.rfa_fb_helper = helper; 258 rfa.rfa_fb_sizes = *sizes; 259 rfa.rfa_fb_ptr = rbo->kptr; 260 rfa.rfa_fb_linebytes = mode_cmd.pitches[0]; 261 262 helper->fbdev = config_found_ia(rdev->ddev->dev, "radeonfbbus", &rfa, 263 NULL); 264 if (helper->fbdev == NULL) { 265 DRM_ERROR("failed to attach genfb\n"); 266 goto out_unref; 267 } 268 } 269 fb = &rfbdev->rfb.base; 270 rfbdev->helper.fb = fb; 271 #else 272 /* okay we have an object now allocate the framebuffer */ 273 info = drm_fb_helper_alloc_fbi(helper); 274 if (IS_ERR(info)) { 275 ret = PTR_ERR(info); 276 goto out_unref; 277 } 278 279 info->par = rfbdev; 280 281 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 282 if (ret) { 283 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 284 goto out_destroy_fbi; 285 } 286 287 fb = &rfbdev->rfb.base; 288 289 /* setup helper */ 290 rfbdev->helper.fb = fb; 291 292 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); 293 294 strcpy(info->fix.id, "radeondrmfb"); 295 296 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 297 298 info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; 299 info->fbops = &radeonfb_ops; 300 301 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 302 info->fix.smem_start = rdev->mc.aper_base + tmp; 303 info->fix.smem_len = radeon_bo_size(rbo); 304 info->screen_base = rbo->kptr; 305 info->screen_size = radeon_bo_size(rbo); 306 307 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); 308 309 /* setup aperture base/size for vesafb takeover */ 310 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; 311 info->apertures->ranges[0].size = rdev->mc.aper_size; 312 313 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 314 315 if (info->screen_base == NULL) { 316 ret = -ENOSPC; 317 goto out_destroy_fbi; 318 } 319 320 DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); 321 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); 322 DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo)); 323 DRM_INFO("fb depth is %d\n", fb->depth); 324 DRM_INFO(" pitch is %d\n", fb->pitches[0]); 325 326 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info); 327 #endif 328 return 0; 329 330 #ifndef __NetBSD__ 331 out_destroy_fbi: 332 drm_fb_helper_release_fbi(helper); 333 #endif 334 out_unref: 335 if (rbo) { 336 337 } 338 if (fb && ret) { 339 drm_gem_object_unreference(gobj); 340 drm_framebuffer_unregister_private(fb); 341 drm_framebuffer_cleanup(fb); 342 kfree(fb); 343 } 344 return ret; 345 } 346 347 void radeon_fb_output_poll_changed(struct radeon_device *rdev) 348 { 349 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); 350 } 351 352 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) 353 { 354 struct radeon_framebuffer *rfb = &rfbdev->rfb; 355 #ifdef __NetBSD__ 356 int ret; 357 #endif 358 359 #ifdef __NetBSD__ 360 /* XXX errno NetBSD->Linux */ 361 ret = -config_detach(rfbdev->helper.fbdev, DETACH_FORCE); 362 if (ret) 363 DRM_ERROR("failed to detach radeonfb: %d\n", ret); 364 rfbdev->helper.fbdev = NULL; 365 #else 366 drm_fb_helper_unregister_fbi(&rfbdev->helper); 367 drm_fb_helper_release_fbi(&rfbdev->helper); 368 #endif 369 370 if (rfb->obj) { 371 radeonfb_destroy_pinned_object(rfb->obj); 372 rfb->obj = NULL; 373 } 374 drm_fb_helper_fini(&rfbdev->helper); 375 drm_framebuffer_unregister_private(&rfb->base); 376 drm_framebuffer_cleanup(&rfb->base); 377 378 return 0; 379 } 380 381 static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = { 382 .gamma_set = radeon_crtc_fb_gamma_set, 383 .gamma_get = radeon_crtc_fb_gamma_get, 384 .fb_probe = radeonfb_create, 385 }; 386 387 int radeon_fbdev_init(struct radeon_device *rdev) 388 { 389 struct radeon_fbdev *rfbdev; 390 int bpp_sel = 32; 391 int ret; 392 393 /* select 8 bpp console on RN50 or 16MB cards */ 394 if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024)) 395 bpp_sel = 8; 396 397 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); 398 if (!rfbdev) 399 return -ENOMEM; 400 401 rfbdev->rdev = rdev; 402 rdev->mode_info.rfbdev = rfbdev; 403 404 drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, 405 &radeon_fb_helper_funcs); 406 407 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, 408 rdev->num_crtc, 409 RADEONFB_CONN_LIMIT); 410 if (ret) 411 goto free; 412 413 ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper); 414 if (ret) 415 goto fini; 416 417 /* disable all the possible outputs/crtcs before entering KMS mode */ 418 drm_helper_disable_unused_functions(rdev->ddev); 419 420 ret = drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); 421 if (ret) 422 goto fini; 423 424 return 0; 425 426 fini: 427 drm_fb_helper_fini(&rfbdev->helper); 428 free: 429 kfree(rfbdev); 430 return ret; 431 } 432 433 void radeon_fbdev_fini(struct radeon_device *rdev) 434 { 435 if (!rdev->mode_info.rfbdev) 436 return; 437 438 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev); 439 kfree(rdev->mode_info.rfbdev); 440 rdev->mode_info.rfbdev = NULL; 441 } 442 443 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) 444 { 445 #ifndef __NetBSD__ /* XXX radeon fb suspend */ 446 fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state); 447 #endif 448 } 449 450 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) 451 { 452 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj)) 453 return true; 454 return false; 455 } 456 457 void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector) 458 { 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 drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); 465 } 466 467 void radeon_fbdev_restore_mode(struct radeon_device *rdev) 468 { 469 struct radeon_fbdev *rfbdev = rdev->mode_info.rfbdev; 470 struct drm_fb_helper *fb_helper; 471 int ret; 472 473 if (!rfbdev) 474 return; 475 476 fb_helper = &rfbdev->helper; 477 478 ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); 479 if (ret) 480 DRM_DEBUG("failed to restore crtc mode\n"); 481 } 482
Indexes created Sat Oct 25 16:10:12 GMT 2025