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 static struct fb_ops radeonfb_ops = {
  49 #if 0
  50         .owner = THIS_MODULE,
  51         .fb_check_var = drm_fb_helper_check_var,
  52 #endif
  53         .fb_set_par = drm_fb_helper_set_par,
  54 #if 0
  55         .fb_fillrect = cfb_fillrect,
  56         .fb_copyarea = cfb_copyarea,
  57         .fb_imageblit = cfb_imageblit,
  58         .fb_pan_display = drm_fb_helper_pan_display,
  59 #endif
  60         .fb_blank = drm_fb_helper_blank,
  61 #if 0
  62         .fb_setcmap = drm_fb_helper_setcmap,
  63 #endif
  64         .fb_debug_enter = drm_fb_helper_debug_enter,
  65 #if 0
  66         .fb_debug_leave = drm_fb_helper_debug_leave,
  67 #endif
  68 };
  69
  70
  71 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
  72 {
  73         int aligned = width;
  74         int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
  75         int pitch_mask = 0;
  76
  77         switch (bpp / 8) {
  78         case 1:
  79                 pitch_mask = align_large ? 255 : 127;
  80                 break;
  81         case 2:
  82                 pitch_mask = align_large ? 127 : 31;
  83                 break;
  84         case 3:
  85         case 4:
  86                 pitch_mask = align_large ? 63 : 15;
  87                 break;
  88         }
  89
  90         aligned += pitch_mask;
  91         aligned &= ~pitch_mask;
  92         return aligned;
  93 }
  94
  95 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj)
  96 {
  97         struct radeon_bo *rbo = gem_to_radeon_bo(gobj);
  98         int ret;
  99
 100         ret = radeon_bo_reserve(rbo, false);
 101         if (likely(ret == 0)) {
 102                 radeon_bo_kunmap(rbo);
 103                 radeon_bo_unpin(rbo);
 104                 radeon_bo_unreserve(rbo);
 105         }
 106         drm_gem_object_unreference_unlocked(gobj);
 107 }
 108
 109 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev,
 110                                          struct drm_mode_fb_cmd2 *mode_cmd,
 111                                          struct drm_gem_object **gobj_p)
 112 {
 113         struct radeon_device *rdev = rfbdev->rdev;
 114         struct drm_gem_object *gobj = NULL;
 115         struct radeon_bo *rbo = NULL;
 116         bool fb_tiled = false; /* useful for testing */
 117         u32 tiling_flags = 0;
 118         int ret;
 119         int aligned_size, size;
 120         int height = mode_cmd->height;
 121         u32 bpp, depth;
 122
 123         drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
 124
 125         /* need to align pitch with crtc limits */
 126         mode_cmd->pitches[0] = radeon_align_pitch(rdev, mode_cmd->width, bpp,
 127                                                   fb_tiled) * ((bpp + 1) / 8);
 128
 129         if (rdev->family >= CHIP_R600)
 130                 height = ALIGN(mode_cmd->height, 8);
 131         size = mode_cmd->pitches[0] * height;
 132         aligned_size = ALIGN(size, PAGE_SIZE);
 133         ret = radeon_gem_object_create(rdev, aligned_size, 0,
 134                                        RADEON_GEM_DOMAIN_VRAM,
 135                                        0, true, &gobj);
 136         if (ret) {
 137                 printk(KERN_ERR "failed to allocate framebuffer (%d)\n",
 138                        aligned_size);
 139                 return -ENOMEM;
 140         }
 141         rbo = gem_to_radeon_bo(gobj);
 142
 143         if (fb_tiled)
 144                 tiling_flags = RADEON_TILING_MACRO;
 145
 146 #ifdef __BIG_ENDIAN
 147         switch (bpp) {
 148         case 32:
 149                 tiling_flags |= RADEON_TILING_SWAP_32BIT;
 150                 break;
 151         case 16:
 152                 tiling_flags |= RADEON_TILING_SWAP_16BIT;
 153         default:
 154                 break;
 155         }
 156 #endif
 157
 158         if (tiling_flags) {
 159                 ret = radeon_bo_set_tiling_flags(rbo,
 160                                                  tiling_flags | RADEON_TILING_SURFACE,
 161                                                  mode_cmd->pitches[0]);
 162                 if (ret)
 163                         dev_err(rdev->dev, "FB failed to set tiling flags\n");
 164         }
 165
 166
 167         ret = radeon_bo_reserve(rbo, false);
 168         if (unlikely(ret != 0))
 169                 goto out_unref;
 170         /* Only 27 bit offset for legacy CRTC */
 171         ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
 172                                        ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
 173                                        NULL);
 174         if (ret) {
 175                 radeon_bo_unreserve(rbo);
 176                 goto out_unref;
 177         }
 178         if (fb_tiled)
 179                 radeon_bo_check_tiling(rbo, 0, 0);
 180         ret = radeon_bo_kmap(rbo, NULL);
 181         radeon_bo_unreserve(rbo);
 182         if (ret) {
 183                 goto out_unref;
 184         }
 185
 186         *gobj_p = gobj;
 187         return 0;
 188 out_unref:
 189         radeonfb_destroy_pinned_object(gobj);
 190         *gobj_p = NULL;
 191         return ret;
 192 }
 193
 194 static int radeonfb_create(struct drm_fb_helper *helper,
 195                            struct drm_fb_helper_surface_size *sizes)
 196 {
 197         struct radeon_fbdev *rfbdev =
 198                 container_of(helper, struct radeon_fbdev, helper);
 199         struct radeon_device *rdev = rfbdev->rdev;
 200         struct fb_info *info;
 201         struct drm_framebuffer *fb = NULL;
 202         struct drm_mode_fb_cmd2 mode_cmd;
 203         struct drm_gem_object *gobj = NULL;
 204         struct radeon_bo *rbo = NULL;
 205 #ifdef DUMBBELL_WIP
 206         device_t device = rdev->dev;
 207 #endif /* DUMBBELL_WIP */
 208         device_t vga_dev = device_get_parent(rdev->dev->bsddev);
 209         int ret;
 210         unsigned long tmp;
 211
 212         mode_cmd.width = sizes->surface_width;
 213         mode_cmd.height = sizes->surface_height;
 214
 215         /* avivo can't scanout real 24bpp */
 216         if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
 217                 sizes->surface_bpp = 32;
 218
 219         mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
 220                                                           sizes->surface_depth);
 221
 222         ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
 223         if (ret) {
 224                 DRM_ERROR("failed to create fbcon object %d\n", ret);
 225                 return ret;
 226         }
 227
 228         rbo = gem_to_radeon_bo(gobj);
 229
 230         info = drm_fb_helper_alloc_fbi(helper);
 231         if (IS_ERR(info)) {
 232                 ret = PTR_ERR(info);
 233                 goto out_unref;
 234         }
 235
 236         info->par = rfbdev;
 237
 238         ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
 239         if (ret) {
 240                 DRM_ERROR("failed to initialize framebuffer %d\n", ret);
 241                 goto out_destroy_fbi;
 242         }
 243
 244         fb = &rfbdev->rfb.base;
 245
 246         /* setup helper */
 247         rfbdev->helper.fb = fb;
 248
 249         memset(rbo->kptr, 0, radeon_bo_size(rbo));
 250         tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
 251         info->vaddr = (vm_offset_t)rbo->kptr;
 252         info->paddr = rdev->mc.aper_base + tmp;
 253         info->width = sizes->surface_width;
 254         info->height = sizes->surface_height;
 255         info->stride = fb->pitches[0];
 256         info->depth = sizes->surface_bpp;
 257         info->is_vga_boot_display = vga_pci_is_boot_display(vga_dev);
 258 #ifdef __DragonFly__
 259         info->fbops = radeonfb_ops;
 260 #else
 261         info->fbops = &radeonfb_ops;
 262 #endif
 263
 264         DRM_INFO("fb mappable at 0x%jX\n",  info->paddr);
 265         DRM_INFO("vram apper at 0x%lX\n",  (unsigned long)rdev->mc.aper_base);
 266         DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
 267         DRM_INFO("fb depth is %d\n", fb->depth);
 268         DRM_INFO("   pitch is %d\n", fb->pitches[0]);
 269         return 0;
 270
 271 out_destroy_fbi:
 272         drm_fb_helper_release_fbi(helper);
 273 out_unref:
 274         if (rbo) {
 275
 276         }
 277         if (fb && ret) {
 278                 drm_gem_object_unreference(gobj);
 279                 drm_framebuffer_unregister_private(fb);
 280                 drm_framebuffer_cleanup(fb);
 281                 kfree(fb); /* XXX malloc'd in radeon_user_framebuffer_create? */
 282         }
 283         return ret;
 284 }
 285
 286 void radeon_fb_output_poll_changed(struct radeon_device *rdev)
 287 {
 288         drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
 289 }
 290
 291 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
 292 {
 293         struct radeon_framebuffer *rfb = &rfbdev->rfb;
 294
 295         drm_fb_helper_unregister_fbi(&rfbdev->helper);
 296         drm_fb_helper_release_fbi(&rfbdev->helper);
 297
 298         if (rfb->obj) {
 299                 radeonfb_destroy_pinned_object(rfb->obj);
 300                 rfb->obj = NULL;
 301         }
 302         drm_fb_helper_fini(&rfbdev->helper);
 303         drm_framebuffer_unregister_private(&rfb->base);
 304         drm_framebuffer_cleanup(&rfb->base);
 305
 306         return 0;
 307 }
 308
 309 static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
 310         .gamma_set = radeon_crtc_fb_gamma_set,
 311         .gamma_get = radeon_crtc_fb_gamma_get,
 312         .fb_probe = radeonfb_create,
 313 };
 314
 315 int radeon_fbdev_init(struct radeon_device *rdev)
 316 {
 317         struct radeon_fbdev *rfbdev;
 318         int bpp_sel = 32;
 319         int ret;
 320
 321         /* select 8 bpp console on RN50 or 16MB cards */
 322         if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
 323                 bpp_sel = 8;
 324
 325         rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL);
 326         if (!rfbdev)
 327                 return -ENOMEM;
 328
 329         rfbdev->rdev = rdev;
 330         rdev->mode_info.rfbdev = rfbdev;
 331
 332         drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper,
 333                               &radeon_fb_helper_funcs);
 334
 335         ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
 336                                  rdev->num_crtc,
 337                                  RADEONFB_CONN_LIMIT);
 338         if (ret) {
 339                 kfree(rfbdev);
 340                 return ret;
 341         }
 342
 343         drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
 344
 345         /* disable all the possible outputs/crtcs before entering KMS mode */
 346         drm_helper_disable_unused_functions(rdev->ddev);
 347
 348         drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
 349         return 0;
 350 }
 351
 352 void radeon_fbdev_fini(struct radeon_device *rdev)
 353 {
 354         if (!rdev->mode_info.rfbdev)
 355                 return;
 356
 357         radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
 358         kfree(rdev->mode_info.rfbdev);
 359         rdev->mode_info.rfbdev = NULL;
 360 }
 361
 362 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
 363 {
 364 #ifdef DUMBBELL_WIP
 365         fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
 366 #endif /* DUMBBELL_WIP */
 367 }
 368
 369 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 370 {
 371         if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))
 372                 return true;
 373         return false;
 374 }
 375
 376 void radeon_fbdev_restore_mode(struct radeon_device *rdev)
 377 {
 378         struct radeon_fbdev *rfbdev = rdev->mode_info.rfbdev;
 379         struct drm_fb_helper *fb_helper;
 380         int ret;
 381
 382         if (!rfbdev)
 383                 return;
 384
 385         fb_helper = &rfbdev->helper;
 386
 387         ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
 388         if (ret)
 389                 DRM_DEBUG("failed to restore crtc mode\n");
 390 }