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