sys/dev/drm/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  * $FreeBSD: head/sys/dev/drm2/radeon/radeon_fb.c 254885 2013-08-25 19:37:15Z dumbbell $
  27  */
  28
  29 #include <drm/drmP.h>
  30 #include <drm/drm_crtc.h>
  31 #include <drm/drm_crtc_helper.h>
  32 #include <uapi_drm/radeon_drm.h>
  33 #include "radeon.h"
  34
  35 #include <drm/drm_fb_helper.h>
  36
  37 /* object hierarchy -
  38    this contains a helper + a radeon fb
  39    the helper contains a pointer to radeon framebuffer baseclass.
  40 */
  41 struct radeon_fbdev {
  42         struct drm_fb_helper helper;
  43         struct radeon_framebuffer rfb;
  44         struct list_head fbdev_list;
  45         struct radeon_device *rdev;
  46 };
  47
  48 #ifdef DUMBBELL_WIP
  49 static struct fb_ops radeonfb_ops = {
  50         .owner = THIS_MODULE,
  51         .fb_check_var = drm_fb_helper_check_var,
  52         .fb_set_par = drm_fb_helper_set_par,
  53         .fb_fillrect = cfb_fillrect,
  54         .fb_copyarea = cfb_copyarea,
  55         .fb_imageblit = cfb_imageblit,
  56         .fb_pan_display = drm_fb_helper_pan_display,
  57         .fb_blank = drm_fb_helper_blank,
  58         .fb_setcmap = drm_fb_helper_setcmap,
  59         .fb_debug_enter = drm_fb_helper_debug_enter,
  60         .fb_debug_leave = drm_fb_helper_debug_leave,
  61 };
  62 #endif /* DUMBBELL_WIP */
  63
  64
  65 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
  66 {
  67         int aligned = width;
  68         int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
  69         int pitch_mask = 0;
  70
  71         switch (bpp / 8) {
  72         case 1:
  73                 pitch_mask = align_large ? 255 : 127;
  74                 break;
  75         case 2:
  76                 pitch_mask = align_large ? 127 : 31;
  77                 break;
  78         case 3:
  79         case 4:
  80                 pitch_mask = align_large ? 63 : 15;
  81                 break;
  82         }
  83
  84         aligned += pitch_mask;
  85         aligned &= ~pitch_mask;
  86         return aligned;
  87 }
  88
  89 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj)
  90 {
  91         struct radeon_bo *rbo = gem_to_radeon_bo(gobj);
  92         int ret;
  93
  94         ret = radeon_bo_reserve(rbo, false);
  95         if (likely(ret == 0)) {
  96                 radeon_bo_kunmap(rbo);
  97                 radeon_bo_unpin(rbo);
  98                 radeon_bo_unreserve(rbo);
  99         }
 100         drm_gem_object_unreference_unlocked(gobj);
 101 }
 102
 103 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev,
 104                                          struct drm_mode_fb_cmd2 *mode_cmd,
 105                                          struct drm_gem_object **gobj_p)
 106 {
 107         struct radeon_device *rdev = rfbdev->rdev;
 108         struct drm_gem_object *gobj = NULL;
 109         struct radeon_bo *rbo = NULL;
 110         bool fb_tiled = false; /* useful for testing */
 111         u32 tiling_flags = 0;
 112         int ret;
 113         int aligned_size, size;
 114         int height = mode_cmd->height;
 115         u32 bpp, depth;
 116
 117         drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
 118
 119         /* need to align pitch with crtc limits */
 120         mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp,
 121                                                   fb_tiled) * ((bpp + 1) / 8);
 122
 123         if (rdev->family >= CHIP_R600)
 124                 height = roundup2(mode_cmd->height, 8);
 125         size = mode_cmd->pitches[0] * height;
 126         aligned_size = roundup2(size, PAGE_SIZE);
 127         ret = radeon_gem_object_create(rdev, aligned_size, 0,
 128                                        RADEON_GEM_DOMAIN_VRAM,
 129                                        false, true,
 130                                        &gobj);
 131         if (ret) {
 132                 DRM_ERROR("failed to allocate framebuffer (%d)\n",
 133                        aligned_size);
 134                 return -ENOMEM;
 135         }
 136         rbo = gem_to_radeon_bo(gobj);
 137
 138         if (fb_tiled)
 139                 tiling_flags = RADEON_TILING_MACRO;
 140
 141 #ifdef __BIG_ENDIAN
 142         switch (bpp) {
 143         case 32:
 144                 tiling_flags |= RADEON_TILING_SWAP_32BIT;
 145                 break;
 146         case 16:
 147                 tiling_flags |= RADEON_TILING_SWAP_16BIT;
 148         default:
 149                 break;
 150         }
 151 #endif
 152
 153         if (tiling_flags) {
 154                 ret = radeon_bo_set_tiling_flags(rbo,
 155                                                  tiling_flags | RADEON_TILING_SURFACE,
 156                                                  mode_cmd->pitches[0]);
 157                 if (ret)
 158                         dev_err(rdev->dev, "FB failed to set tiling flags\n");
 159         }
 160
 161
 162         ret = radeon_bo_reserve(rbo, false);
 163         if (unlikely(ret != 0))
 164                 goto out_unref;
 165         /* Only 27 bit offset for legacy CRTC */
 166         ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
 167                                        ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
 168                                        NULL);
 169         if (ret) {
 170                 radeon_bo_unreserve(rbo);
 171                 goto out_unref;
 172         }
 173         if (fb_tiled)
 174                 radeon_bo_check_tiling(rbo, 0, 0);
 175         ret = radeon_bo_kmap(rbo, NULL);
 176         radeon_bo_unreserve(rbo);
 177         if (ret) {
 178                 goto out_unref;
 179         }
 180
 181         *gobj_p = gobj;
 182         return 0;
 183 out_unref:
 184         radeonfb_destroy_pinned_object(gobj);
 185         *gobj_p = NULL;
 186         return ret;
 187 }
 188
 189 static int radeonfb_create(struct radeon_fbdev *rfbdev,
 190                            struct drm_fb_helper_surface_size *sizes)
 191 {
 192         struct radeon_device *rdev = rfbdev->rdev;
 193 #ifdef DUMBBELL_WIP
 194         struct fb_info *info;
 195 #endif /* DUMBBELL_WIP */
 196         struct drm_framebuffer *fb = NULL;
 197         struct drm_mode_fb_cmd2 mode_cmd;
 198         struct drm_gem_object *gobj = NULL;
 199         struct radeon_bo *rbo = NULL;
 200 #ifdef DUMBBELL_WIP
 201         device_t device = rdev->dev;
 202 #endif /* DUMBBELL_WIP */
 203         int ret;
 204 #ifdef DUMBBELL_WIP
 205         unsigned long tmp;
 206 #endif /* DUMBBELL_WIP */
 207
 208         mode_cmd.width = sizes->surface_width;
 209         mode_cmd.height = sizes->surface_height;
 210
 211         /* avivo can't scanout real 24bpp */
 212         if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
 213                 sizes->surface_bpp = 32;
 214
 215         mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
 216                                                           sizes->surface_depth);
 217
 218         ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
 219         if (ret) {
 220                 DRM_ERROR("failed to create fbcon object %d\n", ret);
 221                 return ret;
 222         }
 223
 224         rbo = gem_to_radeon_bo(gobj);
 225
 226 #ifdef DUMBBELL_WIP
 227         /* okay we have an object now allocate the framebuffer */
 228         info = framebuffer_alloc(0, device);
 229         if (info == NULL) {
 230                 ret = -ENOMEM;
 231                 goto out_unref;
 232         }
 233
 234         info->par = rfbdev;
 235 #endif /* DUMBBELL_WIP */
 236
 237         ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
 238         if (ret) {
 239                 DRM_ERROR("failed to initalise framebuffer %d\n", ret);
 240                 goto out_unref;
 241         }
 242
 243         fb = &rfbdev->rfb.base;
 244
 245         /* setup helper */
 246         rfbdev->helper.fb = fb;
 247 #ifdef DUMBBELL_WIP
 248         rfbdev->helper.fbdev = info;
 249
 250         memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo));
 251
 252         strcpy(info->fix.id, "radeondrmfb");
 253
 254         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 255
 256         info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
 257         info->fbops = &radeonfb_ops;
 258
 259         tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
 260         info->fix.smem_start = rdev->mc.aper_base + tmp;
 261         info->fix.smem_len = radeon_bo_size(rbo);
 262         info->screen_base = rbo->kptr;
 263         info->screen_size = radeon_bo_size(rbo);
 264
 265         drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
 266
 267         /* setup aperture base/size for vesafb takeover */
 268         info->apertures = alloc_apertures(1);
 269         if (!info->apertures) {
 270                 ret = -ENOMEM;
 271                 goto out_unref;
 272         }
 273         info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base;
 274         info->apertures->ranges[0].size = rdev->mc.aper_size;
 275
 276         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 277
 278         if (info->screen_base == NULL) {
 279                 ret = -ENOSPC;
 280                 goto out_unref;
 281         }
 282
 283         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 284         if (ret) {
 285                 ret = -ENOMEM;
 286                 goto out_unref;
 287         }
 288
 289         DRM_INFO("fb mappable at 0x%lX\n",  info->fix.smem_start);
 290         DRM_INFO("vram apper at 0x%lX\n",  (unsigned long)rdev->mc.aper_base);
 291         DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
 292         DRM_INFO("fb depth is %d\n", fb->depth);
 293         DRM_INFO("   pitch is %d\n", fb->pitches[0]);
 294
 295         vga_switcheroo_client_fb_set(rdev->ddev->pdev, info);
 296 #endif /* DUMBBELL_WIP */
 297         return 0;
 298
 299 out_unref:
 300         if (rbo) {
 301
 302         }
 303         if (fb && ret) {
 304                 drm_gem_object_unreference(gobj);
 305                 drm_framebuffer_cleanup(fb);
 306                 drm_free(fb, DRM_MEM_DRIVER); /* XXX malloc'd in radeon_user_framebuffer_create? */
 307         }
 308         return ret;
 309 }
 310
 311 static int radeon_fb_find_or_create_single(struct drm_fb_helper *helper,
 312                                            struct drm_fb_helper_surface_size *sizes)
 313 {
 314         struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper;
 315         int new_fb = 0;
 316         int ret;
 317
 318         if (!helper->fb) {
 319                 ret = radeonfb_create(rfbdev, sizes);
 320                 if (ret)
 321                         return ret;
 322                 new_fb = 1;
 323         }
 324         return new_fb;
 325 }
 326
 327 void radeon_fb_output_poll_changed(struct radeon_device *rdev)
 328 {
 329         drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
 330 }
 331
 332 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
 333 {
 334 #ifdef DUMBBELL_WIP
 335         struct fb_info *info;
 336 #endif /* DUMBBELL_WIP */
 337         struct radeon_framebuffer *rfb = &rfbdev->rfb;
 338
 339 #ifdef DUMBBELL_WIP
 340         if (rfbdev->helper.fbdev) {
 341                 info = rfbdev->helper.fbdev;
 342
 343                 unregister_framebuffer(info);
 344                 if (info->cmap.len)
 345                         fb_dealloc_cmap(&info->cmap);
 346                 framebuffer_release(info);
 347         }
 348 #endif /* DUMBBELL_WIP */
 349
 350         if (rfb->obj) {
 351                 DRM_UNLOCK(dev); /* Work around lock recursion. dumbbell@ */
 352                 radeonfb_destroy_pinned_object(rfb->obj);
 353                 DRM_LOCK(dev);
 354                 rfb->obj = NULL;
 355         }
 356         drm_fb_helper_fini(&rfbdev->helper);
 357         drm_framebuffer_cleanup(&rfb->base);
 358
 359         return 0;
 360 }
 361
 362 static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
 363         .gamma_set = radeon_crtc_fb_gamma_set,
 364         .gamma_get = radeon_crtc_fb_gamma_get,
 365         .fb_probe = radeon_fb_find_or_create_single,
 366 };
 367
 368 int radeon_fbdev_init(struct radeon_device *rdev)
 369 {
 370         struct radeon_fbdev *rfbdev;
 371         int bpp_sel = 32;
 372         int ret;
 373
 374         /* select 8 bpp console on RN50 or 16MB cards */
 375         if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
 376                 bpp_sel = 8;
 377
 378         rfbdev = kmalloc(sizeof(struct radeon_fbdev), DRM_MEM_DRIVER,
 379                          M_WAITOK | M_ZERO);
 380         if (!rfbdev)
 381                 return -ENOMEM;
 382
 383         rfbdev->rdev = rdev;
 384         rdev->mode_info.rfbdev = rfbdev;
 385         rfbdev->helper.funcs = &radeon_fb_helper_funcs;
 386
 387         ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
 388                                  rdev->num_crtc,
 389                                  RADEONFB_CONN_LIMIT);
 390         if (ret) {
 391                 drm_free(rfbdev, DRM_MEM_DRIVER);
 392                 return ret;
 393         }
 394
 395         drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
 396         drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
 397         return 0;
 398 }
 399
 400 void radeon_fbdev_fini(struct radeon_device *rdev)
 401 {
 402         if (!rdev->mode_info.rfbdev)
 403                 return;
 404
 405         radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
 406         drm_free(rdev->mode_info.rfbdev, DRM_MEM_DRIVER);
 407         rdev->mode_info.rfbdev = NULL;
 408 }
 409
 410 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
 411 {
 412 #ifdef DUMBBELL_WIP
 413         fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
 414 #endif /* DUMBBELL_WIP */
 415 }
 416
 417 int radeon_fbdev_total_size(struct radeon_device *rdev)
 418 {
 419         struct radeon_bo *robj;
 420         int size = 0;
 421
 422         robj = gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj);
 423         size += radeon_bo_size(robj);
 424         return size;
 425 }
 426
 427 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 428 {
 429         if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))
 430                 return true;
 431         return false;
 432 }