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 = ALIGN(mode_cmd->height, 8);
 125         size = mode_cmd->pitches[0] * height;
 126         aligned_size = ALIGN(size, PAGE_SIZE);
 127         ret = radeon_gem_object_create(rdev, aligned_size, 0,
 128                                        RADEON_GEM_DOMAIN_VRAM,
 129                                        0, true, &gobj);
 130         if (ret) {
 131                 printk(KERN_ERR "failed to allocate framebuffer (%d)\n",
 132                        aligned_size);
 133                 return -ENOMEM;
 134         }
 135         rbo = gem_to_radeon_bo(gobj);
 136
 137         if (fb_tiled)
 138                 tiling_flags = RADEON_TILING_MACRO;
 139
 140 #ifdef __BIG_ENDIAN
 141         switch (bpp) {
 142         case 32:
 143                 tiling_flags |= RADEON_TILING_SWAP_32BIT;
 144                 break;
 145         case 16:
 146                 tiling_flags |= RADEON_TILING_SWAP_16BIT;
 147         default:
 148                 break;
 149         }
 150 #endif
 151
 152         if (tiling_flags) {
 153                 ret = radeon_bo_set_tiling_flags(rbo,
 154                                                  tiling_flags | RADEON_TILING_SURFACE,
 155                                                  mode_cmd->pitches[0]);
 156                 if (ret)
 157                         dev_err(rdev->dev, "FB failed to set tiling flags\n");
 158         }
 159
 160
 161         ret = radeon_bo_reserve(rbo, false);
 162         if (unlikely(ret != 0))
 163                 goto out_unref;
 164         /* Only 27 bit offset for legacy CRTC */
 165         ret = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM,
 166                                        ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
 167                                        NULL);
 168         if (ret) {
 169                 radeon_bo_unreserve(rbo);
 170                 goto out_unref;
 171         }
 172         if (fb_tiled)
 173                 radeon_bo_check_tiling(rbo, 0, 0);
 174         ret = radeon_bo_kmap(rbo, NULL);
 175         radeon_bo_unreserve(rbo);
 176         if (ret) {
 177                 goto out_unref;
 178         }
 179
 180         *gobj_p = gobj;
 181         return 0;
 182 out_unref:
 183         radeonfb_destroy_pinned_object(gobj);
 184         *gobj_p = NULL;
 185         return ret;
 186 }
 187
 188 static int radeonfb_create(struct drm_fb_helper *helper,
 189                            struct drm_fb_helper_surface_size *sizes)
 190 {
 191         struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper;
 192         struct radeon_device *rdev = rfbdev->rdev;
 193         struct fb_info *info;
 194         struct drm_framebuffer *fb = NULL;
 195         struct drm_mode_fb_cmd2 mode_cmd;
 196         struct drm_gem_object *gobj = NULL;
 197         struct radeon_bo *rbo = NULL;
 198 #ifdef DUMBBELL_WIP
 199         device_t device = rdev->dev;
 200 #endif /* DUMBBELL_WIP */
 201         device_t vga_dev = device_get_parent(rdev->dev);
 202         int ret;
 203         unsigned long tmp;
 204
 205         mode_cmd.width = sizes->surface_width;
 206         mode_cmd.height = sizes->surface_height;
 207
 208         /* avivo can't scanout real 24bpp */
 209         if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
 210                 sizes->surface_bpp = 32;
 211
 212         mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
 213                                                           sizes->surface_depth);
 214
 215         ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
 216         if (ret) {
 217                 DRM_ERROR("failed to create fbcon object %d\n", ret);
 218                 return ret;
 219         }
 220
 221         rbo = gem_to_radeon_bo(gobj);
 222
 223         info = kmalloc(sizeof(*info), M_DRM, M_WAITOK | M_ZERO);
 224
 225         ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
 226         if (ret) {
 227                 DRM_ERROR("failed to initialize framebuffer %d\n", ret);
 228                 goto out_unref;
 229         }
 230
 231         fb = &rfbdev->rfb.base;
 232
 233         /* setup helper */
 234         rfbdev->helper.fb = fb;
 235         rfbdev->helper.fbdev = info;
 236
 237         memset(rbo->kptr, 0, radeon_bo_size(rbo));
 238         tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
 239         info->vaddr = (vm_offset_t)rbo->kptr;
 240         info->paddr = rdev->mc.aper_base + tmp;
 241         info->width = sizes->surface_width;
 242         info->height = sizes->surface_height;
 243         info->stride = fb->pitches[0];
 244         info->depth = sizes->surface_bpp;
 245         info->is_vga_boot_display = vga_pci_is_boot_display(vga_dev);
 246
 247         DRM_INFO("fb mappable at 0x%jX\n",  info->paddr);
 248         DRM_INFO("vram apper at 0x%lX\n",  (unsigned long)rdev->mc.aper_base);
 249         DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
 250         DRM_INFO("fb depth is %d\n", fb->depth);
 251         DRM_INFO("   pitch is %d\n", fb->pitches[0]);
 252         return 0;
 253
 254 out_unref:
 255         if (rbo) {
 256
 257         }
 258         if (fb && ret) {
 259                 drm_gem_object_unreference(gobj);
 260                 drm_framebuffer_unregister_private(fb);
 261                 drm_framebuffer_cleanup(fb);
 262                 kfree(fb); /* XXX malloc'd in radeon_user_framebuffer_create? */
 263         }
 264         return ret;
 265 }
 266
 267 void radeon_fb_output_poll_changed(struct radeon_device *rdev)
 268 {
 269         drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper);
 270 }
 271
 272 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
 273 {
 274         /* XXX unconfigure fb_info from syscons */
 275 #ifdef DUMBBELL_WIP
 276         struct fb_info *info;
 277 #endif /* DUMBBELL_WIP */
 278         struct radeon_framebuffer *rfb = &rfbdev->rfb;
 279
 280 #ifdef DUMBBELL_WIP
 281         if (rfbdev->helper.fbdev) {
 282                 info = rfbdev->helper.fbdev;
 283
 284                 unregister_framebuffer(info);
 285                 if (info->cmap.len)
 286                         fb_dealloc_cmap(&info->cmap);
 287                 framebuffer_release(info);
 288         }
 289 #endif /* DUMBBELL_WIP */
 290
 291         if (rfb->obj) {
 292                 DRM_UNLOCK(dev); /* Work around lock recursion. dumbbell@ */
 293                 radeonfb_destroy_pinned_object(rfb->obj);
 294                 DRM_LOCK(dev);
 295                 rfb->obj = NULL;
 296         }
 297         drm_fb_helper_fini(&rfbdev->helper);
 298         drm_framebuffer_unregister_private(&rfb->base);
 299         drm_framebuffer_cleanup(&rfb->base);
 300
 301         return 0;
 302 }
 303
 304 static const struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
 305         .gamma_set = radeon_crtc_fb_gamma_set,
 306         .gamma_get = radeon_crtc_fb_gamma_get,
 307         .fb_probe = radeonfb_create,
 308 };
 309
 310 int radeon_fbdev_init(struct radeon_device *rdev)
 311 {
 312         struct radeon_fbdev *rfbdev;
 313         int bpp_sel = 32;
 314         int ret;
 315
 316         /* select 8 bpp console on RN50 or 16MB cards */
 317         if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
 318                 bpp_sel = 8;
 319
 320         rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL);
 321         if (!rfbdev)
 322                 return -ENOMEM;
 323
 324         rfbdev->rdev = rdev;
 325         rdev->mode_info.rfbdev = rfbdev;
 326
 327         drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper,
 328                               &radeon_fb_helper_funcs);
 329
 330         ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
 331                                  rdev->num_crtc,
 332                                  RADEONFB_CONN_LIMIT);
 333         if (ret) {
 334                 kfree(rfbdev);
 335                 return ret;
 336         }
 337
 338         drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
 339
 340         /* disable all the possible outputs/crtcs before entering KMS mode */
 341         drm_helper_disable_unused_functions(rdev->ddev);
 342
 343         drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
 344         return 0;
 345 }
 346
 347 void radeon_fbdev_fini(struct radeon_device *rdev)
 348 {
 349         if (!rdev->mode_info.rfbdev)
 350                 return;
 351
 352         radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
 353         kfree(rdev->mode_info.rfbdev);
 354         rdev->mode_info.rfbdev = NULL;
 355 }
 356
 357 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
 358 {
 359 #ifdef DUMBBELL_WIP
 360         fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
 361 #endif /* DUMBBELL_WIP */
 362 }
 363
 364 int radeon_fbdev_total_size(struct radeon_device *rdev)
 365 {
 366         struct radeon_bo *robj;
 367         int size = 0;
 368
 369         robj = gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj);
 370         size += radeon_bo_size(robj);
 371         return size;
 372 }
 373
 374 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 375 {
 376         if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj))
 377                 return true;
 378         return false;
 379 }