radeon_fb.c revision 1.5
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/slab.h> 28#include <linux/fb.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#ifdef __NetBSD__ 41#include "radeondrmkmsfb.h" 42#endif 43 44/* object hierarchy - 45 this contains a helper + a radeon fb 46 the helper contains a pointer to radeon framebuffer baseclass. 47*/ 48struct radeon_fbdev { 49 struct drm_fb_helper helper; 50 struct radeon_framebuffer rfb; 51 struct list_head fbdev_list; 52 struct radeon_device *rdev; 53}; 54 55#ifndef __NetBSD__ 56static struct fb_ops radeonfb_ops = { 57 .owner = THIS_MODULE, 58 .fb_check_var = drm_fb_helper_check_var, 59 .fb_set_par = drm_fb_helper_set_par, 60 .fb_fillrect = cfb_fillrect, 61 .fb_copyarea = cfb_copyarea, 62 .fb_imageblit = cfb_imageblit, 63 .fb_pan_display = drm_fb_helper_pan_display, 64 .fb_blank = drm_fb_helper_blank, 65 .fb_setcmap = drm_fb_helper_setcmap, 66 .fb_debug_enter = drm_fb_helper_debug_enter, 67 .fb_debug_leave = drm_fb_helper_debug_leave, 68}; 69#endif 70 71 72int 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 96static 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 110static 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#ifdef __NetBSD__ /* XXX ALIGN means something else. */ 132 height = round_up(mode_cmd->height, 8); 133#else 134 height = ALIGN(mode_cmd->height, 8); 135#endif 136 size = mode_cmd->pitches[0] * height; 137#ifdef __NetBSD__ /* XXX ALIGN means something else. */ 138 aligned_size = round_up(size, PAGE_SIZE); 139#else 140 aligned_size = ALIGN(size, PAGE_SIZE); 141#endif 142 ret = radeon_gem_object_create(rdev, aligned_size, 0, 143 RADEON_GEM_DOMAIN_VRAM, 144 false, true, 145 &gobj); 146 if (ret) { 147 printk(KERN_ERR "failed to allocate framebuffer (%d)\n", 148 aligned_size); 149 return -ENOMEM; 150 } 151 rbo = gem_to_radeon_bo(gobj); 152 153 if (fb_tiled) 154 tiling_flags = RADEON_TILING_MACRO; 155 156#ifdef __BIG_ENDIAN 157 switch (bpp) { 158 case 32: 159 tiling_flags |= RADEON_TILING_SWAP_32BIT; 160 break; 161 case 16: 162 tiling_flags |= RADEON_TILING_SWAP_16BIT; 163 default: 164 break; 165 } 166#endif 167 168 if (tiling_flags) { 169 ret = radeon_bo_set_tiling_flags(rbo, 170 tiling_flags | RADEON_TILING_SURFACE, 171 mode_cmd->pitches[0]); 172 if (ret) 173 dev_err(rdev->dev, "FB failed to set tiling flags\n"); 174 } 175 176 177 ret = radeon_bo_reserve(rbo, false); 178 if (unlikely(ret != 0)) 179 goto out_unref; 180 /* Only 27 bit offset for legacy CRTC */ 181 ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 182 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, 183 NULL); 184 if (ret) { 185 radeon_bo_unreserve(rbo); 186 goto out_unref; 187 } 188 if (fb_tiled) 189 radeon_bo_check_tiling(rbo, 0, 0); 190 ret = radeon_bo_kmap(rbo, NULL); 191 radeon_bo_unreserve(rbo); 192 if (ret) { 193 goto out_unref; 194 } 195 196 *gobj_p = gobj; 197 return 0; 198out_unref: 199 radeonfb_destroy_pinned_object(gobj); 200 *gobj_p = NULL; 201 return ret; 202} 203 204static int radeonfb_create(struct drm_fb_helper *helper, 205 struct drm_fb_helper_surface_size *sizes) 206{ 207 struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper; 208 struct radeon_device *rdev = rfbdev->rdev; 209#ifndef __NetBSD__ 210 struct fb_info *info; 211#endif 212 struct drm_framebuffer *fb = NULL; 213 struct drm_mode_fb_cmd2 mode_cmd; 214 struct drm_gem_object *gobj = NULL; 215 struct radeon_bo *rbo = NULL; 216#ifndef __NetBSD__ 217 struct device *device = &rdev->pdev->dev; 218#endif 219 int ret; 220#ifndef __NetBSD__ 221 unsigned long tmp; 222#endif 223 224 mode_cmd.width = sizes->surface_width; 225 mode_cmd.height = sizes->surface_height; 226 227 /* avivo can't scanout real 24bpp */ 228 if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) 229 sizes->surface_bpp = 32; 230 231 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 232 sizes->surface_depth); 233 234 ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj); 235 if (ret) { 236 DRM_ERROR("failed to create fbcon object %d\n", ret); 237 return ret; 238 } 239 240 rbo = gem_to_radeon_bo(gobj); 241 242#ifdef __NetBSD__ 243 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 244 if (ret) { 245 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 246 goto out_unref; 247 } 248 249 (void)memset(rbo->kptr, 0, radeon_bo_size(rbo)); 250 251 { 252 static const struct radeonfb_attach_args zero_rfa; 253 struct radeonfb_attach_args rfa = zero_rfa; 254 255 rfa.rfa_fb_helper = helper; 256 rfa.rfa_fb_sizes = *sizes; 257 rfa.rfa_fb_ptr = rbo->kptr; 258 rfa.rfa_fb_linebytes = mode_cmd.pitches[0]; 259 260 helper->fbdev = config_found_ia(rdev->ddev->dev, "radeonfbbus", &rfa, 261 NULL); 262 if (helper->fbdev == NULL) { 263 DRM_ERROR("failed to attach genfb\n"); 264 goto out_unref; 265 } 266 } 267 fb = &rfbdev->rfb.base; 268 rfbdev->helper.fb = fb; 269#else 270 /* okay we have an object now allocate the framebuffer */ 271 info = framebuffer_alloc(0, device); 272 if (info == NULL) { 273 ret = -ENOMEM; 274 goto out_unref; 275 } 276 277 info->par = rfbdev; 278 279 ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj); 280 if (ret) { 281 DRM_ERROR("failed to initialize framebuffer %d\n", ret); 282 goto out_unref; 283 } 284 285 fb = &rfbdev->rfb.base; 286 287 /* setup helper */ 288 rfbdev->helper.fb = fb; 289 rfbdev->helper.fbdev = info; 290 291 memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo)); 292 293 strcpy(info->fix.id, "radeondrmfb"); 294 295 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 296 297 info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; 298 info->fbops = &radeonfb_ops; 299 300 tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start; 301 info->fix.smem_start = rdev->mc.aper_base + tmp; 302 info->fix.smem_len = radeon_bo_size(rbo); 303 info->screen_base = rbo->kptr; 304 info->screen_size = radeon_bo_size(rbo); 305 306 drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height); 307 308 /* setup aperture base/size for vesafb takeover */ 309 info->apertures = alloc_apertures(1); 310 if (!info->apertures) { 311 ret = -ENOMEM; 312 goto out_unref; 313 } 314 info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base; 315 info->apertures->ranges[0].size = rdev->mc.aper_size; 316 317 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 318 319 if (info->screen_base == NULL) { 320 ret = -ENOSPC; 321 goto out_unref; 322 } 323 324 ret = fb_alloc_cmap(&info->cmap, 256, 0); 325 if (ret) { 326 ret = -ENOMEM; 327 goto out_unref; 328 } 329 330 DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); 331 DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); 332 DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo)); 333 DRM_INFO("fb depth is %d\n", fb->depth); 334 DRM_INFO(" pitch is %d\n", fb->pitches[0]); 335 336 vga_switcheroo_client_fb_set(rdev->ddev->pdev, info); 337#endif 338 return 0; 339 340out_unref: 341 if (rbo) { 342 343 } 344 if (fb && ret) { 345 drm_gem_object_unreference(gobj); 346 drm_framebuffer_unregister_private(fb); 347 drm_framebuffer_cleanup(fb); 348 kfree(fb); 349 } 350 return ret; 351} 352 353void radeon_fb_output_poll_changed(struct radeon_device *rdev) 354{ 355 drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); 356} 357 358static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) 359{ 360#ifndef __NetBSD__ 361 struct fb_info *info; 362#endif 363 struct radeon_framebuffer *rfb = &rfbdev->rfb; 364#ifdef __NetBSD__ 365 int ret; 366#endif 367 368#ifdef __NetBSD__ 369 /* XXX errno NetBSD->Linux */ 370 ret = -config_detach(rfbdev->helper.fbdev, DETACH_FORCE); 371 if (ret) 372 DRM_ERROR("failed to detach radeonfb: %d\n", ret); 373 rfbdev->helper.fbdev = NULL; 374#else 375 if (rfbdev->helper.fbdev) { 376 info = rfbdev->helper.fbdev; 377 378 unregister_framebuffer(info); 379 if (info->cmap.len) 380 fb_dealloc_cmap(&info->cmap); 381 framebuffer_release(info); 382 } 383#endif 384 385 if (rfb->obj) { 386 radeonfb_destroy_pinned_object(rfb->obj); 387 rfb->obj = NULL; 388 } 389 drm_fb_helper_fini(&rfbdev->helper); 390 drm_framebuffer_unregister_private(&rfb->base); 391 drm_framebuffer_cleanup(&rfb->base); 392 393 return 0; 394} 395 396static struct drm_fb_helper_funcs radeon_fb_helper_funcs = { 397 .gamma_set = radeon_crtc_fb_gamma_set, 398 .gamma_get = radeon_crtc_fb_gamma_get, 399 .fb_probe = radeonfb_create, 400}; 401 402int radeon_fbdev_init(struct radeon_device *rdev) 403{ 404 struct radeon_fbdev *rfbdev; 405 int bpp_sel = 32; 406 int ret; 407 408 /* select 8 bpp console on RN50 or 16MB cards */ 409 if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024)) 410 bpp_sel = 8; 411 412 rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL); 413 if (!rfbdev) 414 return -ENOMEM; 415 416 rfbdev->rdev = rdev; 417 rdev->mode_info.rfbdev = rfbdev; 418 rfbdev->helper.funcs = &radeon_fb_helper_funcs; 419 420 ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper, 421 rdev->num_crtc, 422 RADEONFB_CONN_LIMIT); 423 if (ret) { 424 kfree(rfbdev); 425 return ret; 426 } 427 428 drm_fb_helper_single_add_all_connectors(&rfbdev->helper); 429 430 /* disable all the possible outputs/crtcs before entering KMS mode */ 431 drm_helper_disable_unused_functions(rdev->ddev); 432 433 drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); 434 return 0; 435} 436 437void radeon_fbdev_fini(struct radeon_device *rdev) 438{ 439 if (!rdev->mode_info.rfbdev) 440 return; 441 442 radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev); 443 kfree(rdev->mode_info.rfbdev); 444 rdev->mode_info.rfbdev = NULL; 445} 446 447void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) 448{ 449#ifndef __NetBSD__ /* XXX radeon fb suspend */ 450 fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state); 451#endif 452} 453 454int radeon_fbdev_total_size(struct radeon_device *rdev) 455{ 456 struct radeon_bo *robj; 457 int size = 0; 458 459 robj = gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj); 460 size += radeon_bo_size(robj); 461 return size; 462} 463 464bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) 465{ 466 if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj)) 467 return true; 468 return false; 469} 470