sys/dev/drm/drm_agpsupport.h

   1 /* drm_agpsupport.h -- DRM support for AGP/GART backend -*- linux-c -*-
   2  * Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com
   3  *
   4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  * Author:
  28  *    Rickard E. (Rik) Faith <faith@valinux.com>
  29  *    Gareth Hughes <gareth@valinux.com>
  30  * $FreeBSD: src/sys/dev/drm/drm_agpsupport.h,v 1.2.2.1 2003/04/26 07:05:28 anholt Exp $
  31  * $DragonFly: src/sys/dev/drm/Attic/drm_agpsupport.h,v 1.2 2003/06/17 04:28:24 dillon Exp $
  32  */
  33
  34 #include "dev/drm/drmP.h"
  35
  36 int DRM(agp_info)(DRM_IOCTL_ARGS)
  37 {
  38         DRM_DEVICE;
  39         struct agp_info *kern;
  40         drm_agp_info_t   info;
  41
  42         if (!dev->agp || !dev->agp->acquired)
  43                 return EINVAL;
  44
  45         kern                   = &dev->agp->info;
  46         agp_get_info(dev->agp->agpdev, kern);
  47         info.agp_version_major = 1;
  48         info.agp_version_minor = 0;
  49         info.mode              = kern->ai_mode;
  50         info.aperture_base     = kern->ai_aperture_base;
  51         info.aperture_size     = kern->ai_aperture_size;
  52         info.memory_allowed    = kern->ai_memory_allowed;
  53         info.memory_used       = kern->ai_memory_used;
  54         info.id_vendor         = kern->ai_devid & 0xffff;
  55         info.id_device         = kern->ai_devid >> 16;
  56
  57         *(drm_agp_info_t *) data = info;
  58         return 0;
  59 }
  60
  61 int DRM(agp_acquire)(DRM_IOCTL_ARGS)
  62 {
  63         DRM_DEVICE;
  64         int          retcode;
  65
  66         if (!dev->agp || dev->agp->acquired)
  67                 return EINVAL;
  68         retcode = agp_acquire(dev->agp->agpdev);
  69         if (retcode)
  70                 return retcode;
  71         dev->agp->acquired = 1;
  72         return 0;
  73 }
  74
  75 int DRM(agp_release)(DRM_IOCTL_ARGS)
  76 {
  77         DRM_DEVICE;
  78
  79         if (!dev->agp || !dev->agp->acquired)
  80                 return EINVAL;
  81         agp_release(dev->agp->agpdev);
  82         dev->agp->acquired = 0;
  83         return 0;
  84
  85 }
  86
  87 void DRM(agp_do_release)(void)
  88 {
  89         device_t agpdev;
  90
  91         agpdev = DRM_AGP_FIND_DEVICE();
  92         if (agpdev)
  93                 agp_release(agpdev);
  94 }
  95
  96 int DRM(agp_enable)(DRM_IOCTL_ARGS)
  97 {
  98         DRM_DEVICE;
  99         drm_agp_mode_t mode;
 100
 101         if (!dev->agp || !dev->agp->acquired)
 102                 return EINVAL;
 103
 104         mode = *(drm_agp_mode_t *) data;
 105
 106         dev->agp->mode    = mode.mode;
 107         agp_enable(dev->agp->agpdev, mode.mode);
 108         dev->agp->base    = dev->agp->info.ai_aperture_base;
 109         dev->agp->enabled = 1;
 110         return 0;
 111 }
 112
 113 int DRM(agp_alloc)(DRM_IOCTL_ARGS)
 114 {
 115         DRM_DEVICE;
 116         drm_agp_buffer_t request;
 117         drm_agp_mem_t    *entry;
 118         void             *handle;
 119         unsigned long    pages;
 120         u_int32_t        type;
 121         struct agp_memory_info info;
 122
 123         if (!dev->agp || !dev->agp->acquired)
 124                 return EINVAL;
 125
 126         request = *(drm_agp_buffer_t *) data;
 127
 128         if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS)))
 129                 return ENOMEM;
 130
 131         bzero(entry, sizeof(*entry));
 132
 133         pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
 134         type = (u_int32_t) request.type;
 135
 136         if (!(handle = DRM(alloc_agp)(pages, type))) {
 137                 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
 138                 return ENOMEM;
 139         }
 140
 141         entry->handle    = handle;
 142         entry->bound     = 0;
 143         entry->pages     = pages;
 144         entry->prev      = NULL;
 145         entry->next      = dev->agp->memory;
 146         if (dev->agp->memory)
 147                 dev->agp->memory->prev = entry;
 148         dev->agp->memory = entry;
 149
 150         agp_memory_info(dev->agp->agpdev, entry->handle, &info);
 151
 152         request.handle   = (unsigned long) entry->handle;
 153         request.physical = info.ami_physical;
 154
 155         *(drm_agp_buffer_t *) data = request;
 156
 157         return 0;
 158 }
 159
 160 static drm_agp_mem_t * DRM(agp_lookup_entry)(drm_device_t *dev, void *handle)
 161 {
 162         drm_agp_mem_t *entry;
 163
 164         for (entry = dev->agp->memory; entry; entry = entry->next) {
 165                 if (entry->handle == handle) return entry;
 166         }
 167         return NULL;
 168 }
 169
 170 int DRM(agp_unbind)(DRM_IOCTL_ARGS)
 171 {
 172         DRM_DEVICE;
 173         drm_agp_binding_t request;
 174         drm_agp_mem_t     *entry;
 175         int retcode;
 176
 177         if (!dev->agp || !dev->agp->acquired)
 178                 return EINVAL;
 179         request = *(drm_agp_binding_t *) data;
 180         if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
 181                 return EINVAL;
 182         if (!entry->bound) return EINVAL;
 183         retcode=DRM(unbind_agp)(entry->handle);
 184         if (!retcode)
 185         {
 186                 entry->bound=0;
 187                 return 0;
 188         }
 189         else
 190                 return retcode;
 191 }
 192
 193 int DRM(agp_bind)(DRM_IOCTL_ARGS)
 194 {
 195         DRM_DEVICE;
 196         drm_agp_binding_t request;
 197         drm_agp_mem_t     *entry;
 198         int               retcode;
 199         int               page;
 200
 201         DRM_DEBUG("agp_bind, page_size=%x\n", PAGE_SIZE);
 202         if (!dev->agp || !dev->agp->acquired)
 203                 return EINVAL;
 204         request = *(drm_agp_binding_t *) data;
 205         if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
 206                 return EINVAL;
 207         if (entry->bound) return EINVAL;
 208         page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE;
 209         if ((retcode = DRM(bind_agp)(entry->handle, page)))
 210                 return retcode;
 211         entry->bound = dev->agp->base + (page << PAGE_SHIFT);
 212         return 0;
 213 }
 214
 215 int DRM(agp_free)(DRM_IOCTL_ARGS)
 216 {
 217         DRM_DEVICE;
 218         drm_agp_buffer_t request;
 219         drm_agp_mem_t    *entry;
 220
 221         if (!dev->agp || !dev->agp->acquired)
 222                 return EINVAL;
 223         request = *(drm_agp_buffer_t *) data;
 224         if (!(entry = DRM(agp_lookup_entry)(dev, (void*) request.handle)))
 225                 return EINVAL;
 226         if (entry->bound)
 227                 DRM(unbind_agp)(entry->handle);
 228
 229         if (entry->prev)
 230                 entry->prev->next = entry->next;
 231         else
 232                 dev->agp->memory  = entry->next;
 233         if (entry->next)
 234                 entry->next->prev = entry->prev;
 235         DRM(free_agp)(entry->handle, entry->pages);
 236         DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
 237         return 0;
 238 }
 239
 240 drm_agp_head_t *DRM(agp_init)(void)
 241 {
 242         device_t agpdev;
 243         drm_agp_head_t *head   = NULL;
 244         int      agp_available = 1;
 245
 246         agpdev = DRM_AGP_FIND_DEVICE();
 247         if (!agpdev)
 248                 agp_available = 0;
 249
 250         DRM_DEBUG("agp_available = %d\n", agp_available);
 251
 252         if (agp_available) {
 253                 if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS)))
 254                         return NULL;
 255                 bzero((void *)head, sizeof(*head));
 256                 head->agpdev = agpdev;
 257                 agp_get_info(agpdev, &head->info);
 258                 head->memory = NULL;
 259 #if 0                           /* bogus */
 260                 switch (head->agp_info.chipset) {
 261                 case INTEL_GENERIC:  head->chipset = "Intel";          break;
 262                 case INTEL_LX:       head->chipset = "Intel 440LX";    break;
 263                 case INTEL_BX:       head->chipset = "Intel 440BX";    break;
 264                 case INTEL_GX:       head->chipset = "Intel 440GX";    break;
 265                 case INTEL_I810:     head->chipset = "Intel i810";     break;
 266                 case VIA_GENERIC:    head->chipset = "VIA";            break;
 267                 case VIA_VP3:        head->chipset = "VIA VP3";        break;
 268                 case VIA_MVP3:       head->chipset = "VIA MVP3";       break;
 269                 case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro"; break;
 270                 case SIS_GENERIC:    head->chipset = "SiS";            break;
 271                 case AMD_GENERIC:    head->chipset = "AMD";            break;
 272                 case AMD_IRONGATE:   head->chipset = "AMD Irongate";   break;
 273                 case ALI_GENERIC:    head->chipset = "ALi";            break;
 274                 case ALI_M1541:      head->chipset = "ALi M1541";      break;
 275                 default:
 276                 }
 277 #endif
 278                 DRM_INFO("AGP at 0x%08lx %dMB\n",
 279                          (long)head->info.ai_aperture_base,
 280                          (int)(head->info.ai_aperture_size >> 20));
 281         }
 282         return head;
 283 }
 284
 285 void DRM(agp_uninit)(void)
 286 {
 287 /* FIXME: What goes here */
 288 }
 289
 290
 291 agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type)
 292 {
 293         device_t agpdev;
 294
 295         agpdev = DRM_AGP_FIND_DEVICE();
 296         if (!agpdev)
 297                 return NULL;
 298
 299         return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
 300 }
 301
 302 int DRM(agp_free_memory)(agp_memory *handle)
 303 {
 304         device_t agpdev;
 305
 306         agpdev = DRM_AGP_FIND_DEVICE();
 307         if (!agpdev || !handle)
 308                 return 0;
 309
 310         agp_free_memory(agpdev, handle);
 311         return 1;
 312 }
 313
 314 int DRM(agp_bind_memory)(agp_memory *handle, off_t start)
 315 {
 316         device_t agpdev;
 317
 318         agpdev = DRM_AGP_FIND_DEVICE();
 319         if (!agpdev || !handle)
 320                 return EINVAL;
 321
 322         return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
 323 }
 324
 325 int DRM(agp_unbind_memory)(agp_memory *handle)
 326 {
 327         device_t agpdev;
 328
 329         agpdev = DRM_AGP_FIND_DEVICE();
 330         if (!agpdev || !handle)
 331                 return EINVAL;
 332
 333         return agp_unbind_memory(agpdev, handle);
 334 }