radeon_fb.c revision 1.5.20.2
1 /* $NetBSD: radeon_fb.c,v 1.5.20.2 2020/04/08 14:08:26 martin 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 1.5.20.2 2020/04/08 14:08:26 martin 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 48 #include <linux/nbsd-namespace.h> 49 #endif 50 51 /* object hierarchy - 52 this contains a helper + a radeon fb 53 the helper contains a pointer to radeon framebuffer baseclass. 54 */ 55 struct radeon_fbdev { 56 struct drm_fb_helper helper; 57 struct radeon_framebuffer rfb; 58 struct list_head fbdev_list; 59 struct radeon_device *rdev; 60 }; 61 62 #ifndef __NetBSD__ 63 static struct fb_ops radeonfb_ops = { 64 .owner = THIS_MODULE, 65 .fb_check_var = drm_fb_helper_check_var, 66 .fb_set_par = drm_fb_helper_set_par, 67 .fb_fillrect = drm_fb_helper_cfb_fillrect, 68 .fb_copyarea = drm_fb_helper_cfb_copyarea, 69 .fb_imageblit = drm_fb_helper_cfb_imageblit, 70 .fb_pan_display = drm_fb_helper_pan_display, 71 .fb_blank = drm_fb_helper_blank, 72 .fb_setcmap = drm_fb_helper_setcmap, 73 .fb_debug_enter = drm_fb_helper_debug_enter, 74 .fb_debug_leave = drm_fb_helper_debug_leave, 75 }; 76 #endif 77 78 79 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled) 80 { 81 int aligned = width; 82 int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; 83 int pitch_mask = 0; 84 85 switch (bpp / 8) { 86 case 1: 87 pitch_mask = align_large ? 255 : 127; 88 break; 89 case 2: 90 pitch_mask = align_large ? 127 : 31; 91 break; 92 case 3: 93 case 4: 94 pitch_mask = align_large ? 63 : 15; 95 break; 96 } 97 98 aligned += pitch_mask; 99 aligned &= ~pitch_mask; 100 return aligned; 101 } 102 103 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj) 104 { 105 struct radeon_bo *rbo = gem_to_radeon_bo(gobj); 106 int ret; 107 108 ret = radeon_bo_reserve(rbo, false); 109 if (likely(ret == 0)) { 110 radeon_bo_kunmap(rbo); 111 radeon_bo_unpin(rbo); 112 radeon_bo_unreserve(rbo); 113 } 114 drm_gem_object_unreference_unlocked(gobj); 115 } 116 117 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev, 118 struct drm_mode_fb_cmd2 *mode_cmd, 119 struct drm_gem_object **gobj_p) 120 { 121 struct radeon_device *rdev = rfbdev->rdev; 122 struct drm_gem_object *gobj = NULL; 123 struct radeon_bo *rbo = NULL; 124 bool fb_tiled = false; /* useful for testing */ 125 u32 tiling_flags = 0; 126 int ret; 127 int aligned_size, size; 128 int height = mode_cmd->height; 129 u32 bpp, depth; 130 131 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); 132 133 /* need to align pitch with crtc limits */ 134 mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp, 135 fb_tiled) * ((bpp + 1) / 8); 136 137 if (rdev->family >= CHIP_R600) 138 height = ALIGN(mode_cmd->height, 8); 139 size = mode_cmd->pitches[0] * height; 140 aligned_size = ALIGN(size, PAGE_SIZE); 141 ret = radeon_gem_object_create(rdev, aligned_size, 0, 142 RADEON_GEM_DOMAIN_VRAM, 143 0, true, &gobj); 144 if (ret) { 145 printk(KERN_ERR "failed to allocate framebuffer (%d)\n", 146 aligned_size); 147 return -ENOMEM; 148 } 149 rbo = gem_to_radeon_bo(gobj); 150 151 if (fb_tiled) 152 tiling_flags = RADEON_TILING_MACRO; 153 154 #ifdef __BIG_ENDIAN 155 switch (bpp) { 156 case 32: 157 tiling_flags |= RADEON_TILING_SWAP_32BIT; 158 break; 159 case 16: 160 tiling_flags |= RADEON_TILING_SWAP_16BIT; 161 default: 162 break; 163 } 164 #endif 165 166 if (tiling_flags) { 167 ret = radeon_bo_set_tiling_flags(rbo, 168 tiling_flags | RADEON_TILING_SURFACE, 169 mode_cmd->pitches[0]); 170 if (ret) 171 dev_err(rdev->dev, "FB failed to set tiling flags\n"); 172 } 173 174 175 ret = radeon_bo_reserve(rbo, false); 176 if (unlikely(ret != 0)) 177 goto out_unref; 178 /* Only 27 bit offset for legacy CRTC */ 179 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 180 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, 181 NULL); 182 if (ret) { 183 radeon_bo_unreserve(rbo); 184 goto out_unref; 185 } 186 if (fb_tiled) 187 radeon_bo_check_tiling(rbo, 0, 0); 188 ret = radeon_bo_kmap(rbo, NULL); 189 radeon_bo_unreserve(rbo); 190 if (ret) { 191 goto out_unref; 192 } 193 194 *gobj_p = gobj; 195 return 0; 196 out_unref: 197 radeonfb_destroy_pinned_object(gobj); 198 *gobj_p = NULL; 199 return ret; 200 } 201 202 static int radeonfb_create(struct drm_fb_helper *helper, 203 struct drm_fb_helper_surface_size *sizes) 204 { 205 struct radeon_fbdev *rfbdev = 206 container_of(helper, struct radeon_fbdev, helper); 207 struct radeon_device *rdev = rfbdev->rdev; 208 #ifndef __NetBSD__ 209 struct fb_info *info; 210 #endif 211 struct drm_framebuffer *fb = NULL; 212 struct drm_mode_fb_cmd2 mode_cmd; 213 struct drm_gem_object *gobj = NULL; 214 struct radeon_bo *rbo = NULL; 215 int ret; 216 #ifndef __NetBSD__ 217 unsigned long tmp; 218 #endif 219 220 mode_cmd.width = sizes->surface_width; 221 mode_cmd.height = sizes->surface_height; 222 223 /* avivo can't scanout real 24bpp */ 224 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) 225 sizes->surface_bpp = 32; 226 227 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 228 sizes->surface_depth); 229 230 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj); 231 if (ret) { 232 DRM_ERROR("failed to create fbcon object %d\n", ret); 233 return ret; 234 } 235 236 rbo = gem_to_radeon_bo(gobj); 237 238 #ifdef __NetBSD__ 239 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 240 if (ret) { 241 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 242 goto out_unref; 243 } 244 245 (void)memset(rbo->kptr, 0, radeon_bo_size(rbo)); 246 247 { 248 static const struct radeonfb_attach_args zero_rfa; 249 struct radeonfb_attach_args rfa = zero_rfa; 250 251 rfa.rfa_fb_helper = helper; 252 rfa.rfa_fb_sizes = *sizes; 253 rfa.rfa_fb_ptr = rbo->kptr; 254 rfa.rfa_fb_linebytes = mode_cmd.pitches[0]; 255 256 helper->fbdev = config_found_ia(rdev->ddev->dev, "radeonfbbus", &rfa, 257 NULL); 258 if (helper->fbdev == NULL) { 259 DRM_ERROR("failed to attach genfb\n"); 260 goto out_unref; 261 } 262 } 263 fb = &rfbdev->rfb.base; 264 rfbdev->helper.fb = fb; 265 #else 266 /* okay we have an object now allocate the framebuffer */ 267 info = drm_fb_helper_alloc_fbi(helper); 268 if (IS_ERR(info)) { 269 ret = PTR_ERR(info); 270 goto out_unref; 271 } 272 273 info->par = rfbdev; 274 275 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 276 if (ret) { 277 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 278 goto out_destroy_fbi; 279 } 280 281 fb = &rfbdev->rfb.base; 282 283 /* setup helper */ 284 rfbdev->helper.fb = fb; 285 286 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); 287 288 strcpy(info->fix.id, "radeondrmfb"); 289 290 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 291 292 info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; 293 info->fbops = &radeonfb_ops; 294 295 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 296 info->fix.smem_start = rdev->mc.aper_base + tmp; 297 info->fix.smem_len = radeon_bo_size(rbo); 298 info->screen_base = rbo->kptr; 299 info->screen_size = radeon_bo_size(rbo); 300 301 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); 302 303 /* setup aperture base/size for vesafb takeover */ 304 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; 305 info->apertures->ranges[0].size = rdev->mc.aper_size; 306 307 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 308 309 if (info->screen_base == NULL) { 310 ret = -ENOSPC; 311 goto out_destroy_fbi; 312 } 313 314 DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); 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->depth); 318 DRM_INFO(" pitch is %d\n", fb->pitches[0]); 319 320 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info); 321 #endif 322 return 0; 323 324 #ifndef __NetBSD__ 325 out_destroy_fbi: 326 drm_fb_helper_release_fbi(helper); 327 #endif 328 out_unref: 329 if (rbo) { 330 331 } 332 if (fb && ret) { 333 drm_gem_object_unreference(gobj); 334 drm_framebuffer_unregister_private(fb); 335 drm_framebuffer_cleanup(fb); 336 kfree(fb); 337 } 338 return ret; 339 } 340 341 void radeon_fb_output_poll_changed(struct radeon_device *rdev) 342 { 343 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); 344 } 345 346 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) 347 { 348 struct radeon_framebuffer *rfb = &rfbdev->rfb; 349 #ifdef __NetBSD__ 350 int ret; 351 #endif 352 353 #ifdef __NetBSD__ 354 /* XXX errno NetBSD->Linux */ 355 ret = -config_detach(rfbdev->helper.fbdev, DETACH_FORCE); 356 if (ret) 357 DRM_ERROR("failed to detach radeonfb: %d\n", ret); 358 rfbdev->helper.fbdev = NULL; 359 #else 360 drm_fb_helper_unregister_fbi(&rfbdev->helper); 361 drm_fb_helper_release_fbi(&rfbdev->helper); 362 #endif 363 364 if (rfb->obj) { 365 radeonfb_destroy_pinned_object(rfb->obj); 366 rfb->obj = NULL; 367 } 368 drm_fb_helper_fini(&rfbdev->helper); 369 drm_framebuffer_unregister_private(&rfb->base); 370 drm_framebuffer_cleanup(&rfb->base); 371 372 return 0; 373 } 374 375 static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = { 376 .gamma_set = radeon_crtc_fb_gamma_set, 377 .gamma_get = radeon_crtc_fb_gamma_get, 378 .fb_probe = radeonfb_create, 379 }; 380 381 int radeon_fbdev_init(struct radeon_device *rdev) 382 { 383 struct radeon_fbdev *rfbdev; 384 int bpp_sel = 32; 385 int ret; 386 387 /* select 8 bpp console on RN50 or 16MB cards */ 388 if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024)) 389 bpp_sel = 8; 390 391 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); 392 if (!rfbdev) 393 return -ENOMEM; 394 395 rfbdev->rdev = rdev; 396 rdev->mode_info.rfbdev = rfbdev; 397 398 drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, 399 &radeon_fb_helper_funcs); 400 401 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, 402 rdev->num_crtc, 403 RADEONFB_CONN_LIMIT); 404 if (ret) 405 goto free; 406 407 ret = drm_fb_helper_single_add_all_connectors(&rfbdev->helper); 408 if (ret) 409 goto fini; 410 411 /* disable all the possible outputs/crtcs before entering KMS mode */ 412 drm_helper_disable_unused_functions(rdev->ddev); 413 414 ret = drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); 415 if (ret) 416 goto fini; 417 418 return 0; 419 420 fini: 421 drm_fb_helper_fini(&rfbdev->helper); 422 free: 423 kfree(rfbdev); 424 return ret; 425 } 426 427 void radeon_fbdev_fini(struct radeon_device *rdev) 428 { 429 if (!rdev->mode_info.rfbdev) 430 return; 431 432 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev); 433 kfree(rdev->mode_info.rfbdev); 434 rdev->mode_info.rfbdev = NULL; 435 } 436 437 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) 438 { 439 #ifndef __NetBSD__ /* XXX radeon fb suspend */ 440 fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state); 441 #endif 442 } 443 444 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) 445 { 446 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj)) 447 return true; 448 return false; 449 } 450 451 void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector) 452 { 453 drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector); 454 } 455 456 void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector) 457 { 458 drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); 459 } 460 461 void radeon_fbdev_restore_mode(struct radeon_device *rdev) 462 { 463 struct radeon_fbdev *rfbdev = rdev->mode_info.rfbdev; 464 struct drm_fb_helper *fb_helper; 465 int ret; 466 467 if (!rfbdev) 468 return; 469 470 fb_helper = &rfbdev->helper; 471 472 ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); 473 if (ret) 474 DRM_DEBUG("failed to restore crtc mode\n"); 475 } 476
Indexes created Sat Oct 25 16:10:12 GMT 2025