sys/dev/drm2/radeon/radeon_fb.c

   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
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include <dev/drm2/drmP.h>
  31 #include <dev/drm2/drm_crtc.h>
  32 #include <dev/drm2/drm_crtc_helper.h>
  33 #include <dev/drm2/radeon/radeon_drm.h>
  34 #include "radeon.h"
  35
  36 #include <dev/drm2/drm_fb_helper.h>
  37
  38 /* object hierarchy -
  39    this contains a helper + a radeon fb
  40    the helper contains a pointer to radeon framebuffer baseclass.
  41 */
  42 struct radeon_fbdev {
  43         struct drm_fb_helper helper;
  44         struct radeon_framebuffer rfb;
  45         struct list_head fbdev_list;
  46         struct radeon_device *rdev;
  47 };
  48
  49 #ifdef DUMBBELL_WIP
  50 static struct fb_ops radeonfb_ops = {
  51         .owner = THIS_MODULE,
  52         .fb_check_var = drm_fb_helper_check_var,
  53         .fb_set_par = drm_fb_helper_set_par,
  54         .fb_fillrect = cfb_fillrect,
  55         .fb_copyarea = cfb_copyarea,
  56         .fb_imageblit = cfb_imageblit,
  57         .fb_pan_display = drm_fb_helper_pan_display,
  58         .fb_blank = drm_fb_helper_blank,
  59         .fb_setcmap = drm_fb_helper_setcmap,
  60         .fb_debug_enter = drm_fb_helper_debug_enter,
  61         .fb_debug_leave = drm_fb_helper_debug_leave,
  62 };
  63 #endif /* DUMBBELL_WIP */
  64
  65
  66 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
  67 {
  68         int aligned = width;
  69         int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
  70         int pitch_mask = 0;
  71
  72         switch (bpp / 8) {
  73         case 1:
  74                 pitch_mask = align_large ? 255 : 127;
  75                 break;
  76         case 2:
  77                 pitch_mask = align_large ? 127 : 31;
  78                 break;
  79         case 3:
  80         case 4:
  81                 pitch_mask = align_large ? 63 : 15;
  82                 break;
  83         }
  84
  85         aligned += pitch_mask;
  86         aligned &= ~pitch_mask;
  87         return aligned;
  88 }
  89
  90 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj)
  91 {
  92         struct radeon_bo *rbo = gem_to_radeon_bo(gobj);
  93         int ret;
  94
  95         ret = radeon_bo_reserve(rbo, false);
  96         if (likely(ret == 0)) {
  97                 radeon_bo_kunmap(rbo);
  98                 radeon_bo_unpin(rbo);
  99                 radeon_bo_unreserve(rbo);
 100         }
 101         drm_gem_object_unreference_unlocked(gobj);
 102 }
 103
 104 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev,
 105                                          struct drm_mode_fb_cmd2 *mode_cmd,
 106                                          struct drm_gem_object **gobj_p)
 107 {
 108         struct radeon_device *rdev = rfbdev->rdev;
 109         struct drm_gem_object *gobj = NULL;
 110         struct radeon_bo *rbo = NULL;
 111         bool fb_tiled = false; /* useful for testing */
 112         u32 tiling_flags = 0;
 113         int ret;
 114         int aligned_size, size;
 115         int height = mode_cmd->height;
 116         u32 bpp, depth;
 117
 118         drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
 119
 120         /* need to align pitch with crtc limits */
 121         mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp,
 122                                                   fb_tiled) * ((bpp + 1) / 8);
 123
 124         if (rdev->family >= CHIP_R600)
 125                 height = roundup2(mode_cmd->height, 8);
 126         size = mode_cmd->pitches[0] * height;
 127         aligned_size = roundup2(size, PAGE_SIZE);
 128         ret = radeon_gem_object_create(rdev, aligned_size, 0,
 129                                        RADEON_GEM_DOMAIN_VRAM,
 130                                        false, true,
 131                                        &gobj);
 132         if (ret) {
 133                 DRM_ERROR("failed to allocate framebuffer (%d)\n",
 134                        aligned_size);
 135                 return -ENOMEM;
 136         }
 137         rbo = gem_to_radeon_bo(gobj);
 138
 139         if (fb_tiled)
 140                 tiling_flags = RADEON_TILING_MACRO;
 141
 142 #ifdef __BIG_ENDIAN
 143         switch (bpp) {
 144         case 32:
 145                 tiling_flags |= RADEON_TILING_SWAP_32BIT;
 146                 break;
 147         case 16:
 148                 tiling_flags |= RADEON_TILING_SWAP_16BIT;
 149         default:
 150                 break;
 151         }
 152 #endif
 153
 154         if (tiling_flags) {
 155                 ret = radeon_bo_set_tiling_flags(rbo,
 156                                                  tiling_flags | RADEON_TILING_SURFACE,
 157                                                  mode_cmd->pitches[0]);
 158                 if (ret)
 159                         dev_err(rdev->dev, "FB failed to set tiling flags\n");
 160         }
 161
 162
 163         ret = radeon_bo_reserve(rbo, false);
 164         if (unlikely(ret != 0))
 165                 goto out_unref;
 166         /* Only 27 bit offset for legacy CRTC */
 167         ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
 168                                        ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
 169                                        NULL);
 170         if (ret) {
 171                 radeon_bo_unreserve(rbo);
 172                 goto out_unref;
 173         }
 174         if (fb_tiled)
 175                 radeon_bo_check_tiling(rbo, 0, 0);
 176         ret = radeon_bo_kmap(rbo, NULL);
 177         radeon_bo_unreserve(rbo);
 178         if (ret) {
 179                 goto out_unref;
 180         }
 181
 182         *gobj_p = gobj;
 183         return 0;
 184 out_unref:
 185         radeonfb_destroy_pinned_object(gobj);
 186         *gobj_p = NULL;
 187         return ret;
 188 }
 189
 190 static int radeonfb_create(struct radeon_fbdev *rfbdev,
 191                            struct drm_fb_helper_surface_size *sizes)
 192 {
 193         struct radeon_device *rdev = rfbdev->rdev;
 194 #ifdef DUMBBELL_WIP
 195         struct fb_info *info;
 196 #endif /* DUMBBELL_WIP */
 197         struct drm_framebuffer *fb = NULL;
 198         struct drm_mode_fb_cmd2 mode_cmd;
 199         struct drm_gem_object *gobj = NULL;
 200         struct radeon_bo *rbo = NULL;
 201 #ifdef DUMBBELL_WIP
 202         device_t device = rdev->dev;
 203 #endif /* DUMBBELL_WIP */
 204         int ret;
 205 #ifdef DUMBBELL_WIP
 206         unsigned long tmp;
 207 #endif /* DUMBBELL_WIP */
 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 #ifdef DUMBBELL_WIP
 228         /* okay we have an object now allocate the framebuffer */
 229         info = framebuffer_alloc(0, device);
 230         if (info == NULL) {
 231                 ret = -ENOMEM;
 232                 goto out_unref;
 233         }
 234
 235         info->par = rfbdev;
 236 #endif /* DUMBBELL_WIP */
 237
 238         ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
 239         if (ret) {
 240                 DRM_ERROR("failed to initalise framebuffer %d\n", ret);
 241                 goto out_unref;
 242         }
 243
 244         fb = &rfbdev->rfb.base;
 245
 246         /* setup helper */
 247         rfbdev->helper.fb = fb;
 248 #ifdef DUMBBELL_WIP
 249         rfbdev->helper.fbdev = info;
 250
 251         memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo));
 252
 253         strcpy(info->fix.id, "radeondrmfb");
 254
 255         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 256
 257         info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
 258         info->fbops = &radeonfb_ops;
 259
 260         tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
 261         info->fix.smem_start = rdev->mc.aper_base + tmp;
 262         info->fix.smem_len = radeon_bo_size(rbo);
 263         info->screen_base = rbo->kptr;
 264         info->screen_size = radeon_bo_size(rbo);
 265
 266         drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
 267
 268         /* setup aperture base/size for vesafb takeover */
 269         info->apertures = alloc_apertures(1);
 270         if (!info->apertures) {
 271                 ret = -ENOMEM;
 272                 goto out_unref;
 273         }
 274         info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base;
 275         info->apertures->ranges[0].size = rdev->mc.aper_size;
 276
 277         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 278
 279         if (info->screen_base == NULL) {
 280                 ret = -ENOSPC;
 281                 goto out_unref;
 282         }
 283
 284         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 285         if (ret) {
 286                 ret = -ENOMEM;
 287                 goto out_unref;
 288         }
 289
 290         DRM_INFO("fb mappable at 0x%lX\n",  info->fix.smem_start);
 291         DRM_INFO("vram apper at 0x%lX\n",  (unsigned long)rdev->mc.aper_base);
 292         DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
 293         DRM_INFO("fb depth is %d\n", fb->depth);
 294         DRM_INFO("   pitch is %d\n", fb->pitches[0]);
 295
 296         vga_switcheroo_client_fb_set(rdev->ddev->pdev, info);
 297 #endif /* DUMBBELL_WIP */
 298         return 0;
 299
 300 out_unref:
 301         if (rbo) {
 302
 303         }
 304         if (fb && ret) {
 305                 drm_gem_object_unreference(gobj);
 306                 drm_framebuffer_cleanup(fb);
 307                 free(fb, DRM_MEM_DRIVER); /* XXX malloc'd in radeon_user_framebuffer_create? */
 308         }
 309         return ret;
 310 }
 311
 312 static int radeon_fb_find_or_create_single(struct drm_fb_helper *helper,
 313                                            struct drm_fb_helper_surface_size *sizes)
 314 {
 315         struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper;
 316         int new_fb = 0;
 317         int ret;
 318
 319         if (!helper->fb) {
 320                 ret = radeonfb_create(rfbdev, sizes);
 321                 if (ret)
 322                         return ret;
 323                 new_fb = 1;
 324         }
 325         return new_fb;
 326 }
 327
 328 void radeon_fb_output_poll_changed(struct radeon_device *rdev)
 329 {
 330         drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
 331 }
 332
 333 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
 334 {
 335 #ifdef DUMBBELL_WIP
 336         struct fb_info *info;
 337 #endif /* DUMBBELL_WIP */
 338         struct radeon_framebuffer *rfb = &rfbdev->rfb;
 339
 340 #ifdef DUMBBELL_WIP
 341         if (rfbdev->helper.fbdev) {
 342                 info = rfbdev->helper.fbdev;
 343
 344                 unregister_framebuffer(info);
 345                 if (info->cmap.len)
 346                         fb_dealloc_cmap(&info->cmap);
 347                 framebuffer_release(info);
 348         }
 349 #endif /* DUMBBELL_WIP */
 350
 351         if (rfb->obj) {
 352                 DRM_UNLOCK(dev); /* Work around lock recursion. dumbbell@ */
 353                 radeonfb_destroy_pinned_object(rfb->obj);
 354                 DRM_LOCK(dev);
 355                 rfb->obj = NULL;
 356         }
 357         drm_fb_helper_fini(&rfbdev->helper);
 358         drm_framebuffer_cleanup(&rfb->base);
 359
 360         return 0;
 361 }
 362
 363 static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
 364         .gamma_set = radeon_crtc_fb_gamma_set,
 365         .gamma_get = radeon_crtc_fb_gamma_get,
 366         .fb_probe = radeon_fb_find_or_create_single,
 367 };
 368
 369 int radeon_fbdev_init(struct radeon_device *rdev)
 370 {
 371         struct radeon_fbdev *rfbdev;
 372         int bpp_sel = 32;
 373         int ret;
 374
 375         /* select 8 bpp console on RN50 or 16MB cards */
 376         if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
 377                 bpp_sel = 8;
 378
 379         rfbdev = malloc(sizeof(struct radeon_fbdev),
 380             DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
 381         if (!rfbdev)
 382                 return -ENOMEM;
 383
 384         rfbdev->rdev = rdev;
 385         rdev->mode_info.rfbdev = rfbdev;
 386         rfbdev->helper.funcs = &radeon_fb_helper_funcs;
 387
 388         ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
 389                                  rdev->num_crtc,
 390                                  RADEONFB_CONN_LIMIT);
 391         if (ret) {
 392                 free(rfbdev, DRM_MEM_DRIVER);
 393                 return ret;
 394         }
 395
 396         drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
 397         drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
 398         return 0;
 399 }
 400
 401 void radeon_fbdev_fini(struct radeon_device *rdev)
 402 {
 403         if (!rdev->mode_info.rfbdev)
 404                 return;
 405
 406         radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
 407         free(rdev->mode_info.rfbdev, DRM_MEM_DRIVER);
 408         rdev->mode_info.rfbdev = NULL;
 409 }
 410
 411 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
 412 {
 413 #ifdef DUMBBELL_WIP
 414         fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
 415 #endif /* DUMBBELL_WIP */
 416 }
 417
 418 int radeon_fbdev_total_size(struct radeon_device *rdev)
 419 {
 420         struct radeon_bo *robj;
 421         int size = 0;
 422
 423         robj = gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj);
 424         size += radeon_bo_size(robj);
 425         return size;
 426 }
 427
 428 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 429 {
 430         if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))
 431                 return true;
 432         return false;
 433 }