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  */
  32
  33 #include "dev/drm/drmP.h"
  34
  35 int DRM(agp_info)(DRM_IOCTL_ARGS)
  36 {
  37         DRM_DEVICE;
  38         struct agp_info *kern;
  39         drm_agp_info_t   info;
  40
  41         if (!dev->agp || !dev->agp->acquired)
  42                 return EINVAL;
  43
  44         kern                   = &dev->agp->info;
  45         agp_get_info(dev->agp->agpdev, kern);
  46         info.agp_version_major = 1;
  47         info.agp_version_minor = 0;
  48         info.mode              = kern->ai_mode;
  49         info.aperture_base     = kern->ai_aperture_base;
  50         info.aperture_size     = kern->ai_aperture_size;
  51         info.memory_allowed    = kern->ai_memory_allowed;
  52         info.memory_used       = kern->ai_memory_used;
  53         info.id_vendor         = kern->ai_devid & 0xffff;
  54         info.id_device         = kern->ai_devid >> 16;
  55
  56         *(drm_agp_info_t *) data = info;
  57         return 0;
  58 }
  59
  60 int DRM(agp_acquire)(DRM_IOCTL_ARGS)
  61 {
  62         DRM_DEVICE;
  63         int          retcode;
  64
  65         if (!dev->agp || dev->agp->acquired)
  66                 return EINVAL;
  67         retcode = agp_acquire(dev->agp->agpdev);
  68         if (retcode)
  69                 return retcode;
  70         dev->agp->acquired = 1;
  71         return 0;
  72 }
  73
  74 int DRM(agp_release)(DRM_IOCTL_ARGS)
  75 {
  76         DRM_DEVICE;
  77
  78         if (!dev->agp || !dev->agp->acquired)
  79                 return EINVAL;
  80         agp_release(dev->agp->agpdev);
  81         dev->agp->acquired = 0;
  82         return 0;
  83
  84 }
  85
  86 void DRM(agp_do_release)(void)
  87 {
  88         device_t agpdev;
  89
  90         agpdev = DRM_AGP_FIND_DEVICE();
  91         if (agpdev)
  92                 agp_release(agpdev);
  93 }
  94
  95 int DRM(agp_enable)(DRM_IOCTL_ARGS)
  96 {
  97         DRM_DEVICE;
  98         drm_agp_mode_t mode;
  99
 100         if (!dev->agp || !dev->agp->acquired)
 101                 return EINVAL;
 102
 103         mode = *(drm_agp_mode_t *) data;
 104
 105         dev->agp->mode    = mode.mode;
 106         agp_enable(dev->agp->agpdev, mode.mode);
 107         dev->agp->base    = dev->agp->info.ai_aperture_base;
 108         dev->agp->enabled = 1;
 109         return 0;
 110 }
 111
 112 int DRM(agp_alloc)(DRM_IOCTL_ARGS)
 113 {
 114         DRM_DEVICE;
 115         drm_agp_buffer_t request;
 116         drm_agp_mem_t    *entry;
 117         void             *handle;
 118         unsigned long    pages;
 119         u_int32_t        type;
 120         struct agp_memory_info info;
 121
 122         if (!dev->agp || !dev->agp->acquired)
 123                 return EINVAL;
 124
 125         request = *(drm_agp_buffer_t *) data;
 126
 127         if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS)))
 128                 return ENOMEM;
 129
 130         bzero(entry, sizeof(*entry));
 131
 132         pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
 133         type = (u_int32_t) request.type;
 134
 135         if (!(handle = DRM(alloc_agp)(pages, type))) {
 136                 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
 137                 return ENOMEM;
 138         }
 139
 140         entry->handle    = handle;
 141         entry->bound     = 0;
 142         entry->pages     = pages;
 143         entry->prev      = NULL;
 144         entry->next      = dev->agp->memory;
 145         if (dev->agp->memory)
 146                 dev->agp->memory->prev = entry;
 147         dev->agp->memory = entry;
 148
 149         agp_memory_info(dev->agp->agpdev, entry->handle, &info);
 150
 151         request.handle   = (unsigned long) entry->handle;
 152         request.physical = info.ami_physical;
 153
 154         *(drm_agp_buffer_t *) data = request;
 155
 156         return 0;
 157 }
 158
 159 static drm_agp_mem_t * DRM(agp_lookup_entry)(drm_device_t *dev, void *handle)
 160 {
 161         drm_agp_mem_t *entry;
 162
 163         for (entry = dev->agp->memory; entry; entry = entry->next) {
 164                 if (entry->handle == handle) return entry;
 165         }
 166         return NULL;
 167 }
 168
 169 int DRM(agp_unbind)(DRM_IOCTL_ARGS)
 170 {
 171         DRM_DEVICE;
 172         drm_agp_binding_t request;
 173         drm_agp_mem_t     *entry;
 174         int retcode;
 175
 176         if (!dev->agp || !dev->agp->acquired)
 177                 return EINVAL;
 178         request = *(drm_agp_binding_t *) data;
 179         if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
 180                 return EINVAL;
 181         if (!entry->bound) return EINVAL;
 182         retcode=DRM(unbind_agp)(entry->handle);
 183         if (!retcode)
 184         {
 185                 entry->bound=0;
 186                 return 0;
 187         }
 188         else
 189                 return retcode;
 190 }
 191
 192 int DRM(agp_bind)(DRM_IOCTL_ARGS)
 193 {
 194         DRM_DEVICE;
 195         drm_agp_binding_t request;
 196         drm_agp_mem_t     *entry;
 197         int               retcode;
 198         int               page;
 199
 200         DRM_DEBUG("agp_bind, page_size=%x\n", PAGE_SIZE);
 201         if (!dev->agp || !dev->agp->acquired)
 202                 return EINVAL;
 203         request = *(drm_agp_binding_t *) data;
 204         if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
 205                 return EINVAL;
 206         if (entry->bound) return EINVAL;
 207         page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE;
 208         if ((retcode = DRM(bind_agp)(entry->handle, page)))
 209                 return retcode;
 210         entry->bound = dev->agp->base + (page << PAGE_SHIFT);
 211         return 0;
 212 }
 213
 214 int DRM(agp_free)(DRM_IOCTL_ARGS)
 215 {
 216         DRM_DEVICE;
 217         drm_agp_buffer_t request;
 218         drm_agp_mem_t    *entry;
 219
 220         if (!dev->agp || !dev->agp->acquired)
 221                 return EINVAL;
 222         request = *(drm_agp_buffer_t *) data;
 223         if (!(entry = DRM(agp_lookup_entry)(dev, (void*) request.handle)))
 224                 return EINVAL;
 225         if (entry->bound)
 226                 DRM(unbind_agp)(entry->handle);
 227
 228         if (entry->prev)
 229                 entry->prev->next = entry->next;
 230         else
 231                 dev->agp->memory  = entry->next;
 232         if (entry->next)
 233                 entry->next->prev = entry->prev;
 234         DRM(free_agp)(entry->handle, entry->pages);
 235         DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
 236         return 0;
 237 }
 238
 239 drm_agp_head_t *DRM(agp_init)(void)
 240 {
 241         device_t agpdev;
 242         drm_agp_head_t *head   = NULL;
 243         int      agp_available = 1;
 244
 245         agpdev = DRM_AGP_FIND_DEVICE();
 246         if (!agpdev)
 247                 agp_available = 0;
 248
 249         DRM_DEBUG("agp_available = %d\n", agp_available);
 250
 251         if (agp_available) {
 252                 if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS)))
 253                         return NULL;
 254                 bzero((void *)head, sizeof(*head));
 255                 head->agpdev = agpdev;
 256                 agp_get_info(agpdev, &head->info);
 257                 head->memory = NULL;
 258 #if 0                           /* bogus */
 259                 switch (head->agp_info.chipset) {
 260                 case INTEL_GENERIC:  head->chipset = "Intel";          break;
 261                 case INTEL_LX:       head->chipset = "Intel 440LX";    break;
 262                 case INTEL_BX:       head->chipset = "Intel 440BX";    break;
 263                 case INTEL_GX:       head->chipset = "Intel 440GX";    break;
 264                 case INTEL_I810:     head->chipset = "Intel i810";     break;
 265                 case VIA_GENERIC:    head->chipset = "VIA";            break;
 266                 case VIA_VP3:        head->chipset = "VIA VP3";        break;
 267                 case VIA_MVP3:       head->chipset = "VIA MVP3";       break;
 268                 case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro"; break;
 269                 case SIS_GENERIC:    head->chipset = "SiS";            break;
 270                 case AMD_GENERIC:    head->chipset = "AMD";            break;
 271                 case AMD_IRONGATE:   head->chipset = "AMD Irongate";   break;
 272                 case ALI_GENERIC:    head->chipset = "ALi";            break;
 273                 case ALI_M1541:      head->chipset = "ALi M1541";      break;
 274                 default:
 275                 }
 276 #endif
 277                 DRM_INFO("AGP at 0x%08lx %dMB\n",
 278                          (long)head->info.ai_aperture_base,
 279                          (int)(head->info.ai_aperture_size >> 20));
 280         }
 281         return head;
 282 }
 283
 284 void DRM(agp_uninit)(void)
 285 {
 286 /* FIXME: What goes here */
 287 }
 288
 289
 290 agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type)
 291 {
 292         device_t agpdev;
 293
 294         agpdev = DRM_AGP_FIND_DEVICE();
 295         if (!agpdev)
 296                 return NULL;
 297
 298         return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
 299 }
 300
 301 int DRM(agp_free_memory)(agp_memory *handle)
 302 {
 303         device_t agpdev;
 304
 305         agpdev = DRM_AGP_FIND_DEVICE();
 306         if (!agpdev || !handle)
 307                 return 0;
 308
 309         agp_free_memory(agpdev, handle);
 310         return 1;
 311 }
 312
 313 int DRM(agp_bind_memory)(agp_memory *handle, off_t start)
 314 {
 315         device_t agpdev;
 316
 317         agpdev = DRM_AGP_FIND_DEVICE();
 318         if (!agpdev || !handle)
 319                 return EINVAL;
 320
 321         return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
 322 }
 323
 324 int DRM(agp_unbind_memory)(agp_memory *handle)
 325 {
 326         device_t agpdev;
 327
 328         agpdev = DRM_AGP_FIND_DEVICE();
 329         if (!agpdev || !handle)
 330                 return EINVAL;
 331
 332         return agp_unbind_memory(agpdev, handle);
 333 }