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  *
  31  * $FreeBSD$
  32  */
  33
  34 #include "dev/drm/drmP.h"
  35
  36 #ifdef __FreeBSD__
  37 #include <vm/vm.h>
  38 #include <vm/pmap.h>
  39 #if __REALLY_HAVE_AGP
  40 #include <sys/agpio.h>
  41 #endif
  42 #endif
  43
  44 int DRM(agp_info)(DRM_OS_IOCTL)
  45 {
  46         drm_device_t    *dev    = kdev->si_drv1;
  47         struct agp_info *kern;
  48         drm_agp_info_t   info;
  49
  50         if (!dev->agp || !dev->agp->acquired) return EINVAL;
  51
  52         kern                   = &dev->agp->info;
  53         agp_get_info(dev->agp->agpdev, kern);
  54         info.agp_version_major = 1;
  55         info.agp_version_minor = 0;
  56         info.mode              = kern->ai_mode;
  57         info.aperture_base     = kern->ai_aperture_base;
  58         info.aperture_size     = kern->ai_aperture_size;
  59         info.memory_allowed    = kern->ai_memory_allowed;
  60         info.memory_used       = kern->ai_memory_used;
  61         info.id_vendor         = kern->ai_devid & 0xffff;
  62         info.id_device         = kern->ai_devid >> 16;
  63
  64         *(drm_agp_info_t *) data = info;
  65         return 0;
  66 }
  67
  68 int DRM(agp_acquire)(DRM_OS_IOCTL)
  69 {
  70         drm_device_t *dev = kdev->si_drv1;
  71         int          retcode;
  72
  73         if (!dev->agp || dev->agp->acquired) return EINVAL;
  74         retcode = agp_acquire(dev->agp->agpdev);
  75         if (retcode) return retcode;
  76         dev->agp->acquired = 1;
  77         return 0;
  78 }
  79
  80 int DRM(agp_release)(DRM_OS_IOCTL)
  81 {
  82         drm_device_t *dev = kdev->si_drv1;
  83
  84         if (!dev->agp || !dev->agp->acquired)
  85                 return EINVAL;
  86         agp_release(dev->agp->agpdev);
  87         dev->agp->acquired = 0;
  88         return 0;
  89
  90 }
  91
  92 void DRM(agp_do_release)(void)
  93 {
  94         device_t agpdev;
  95
  96         agpdev = agp_find_device();
  97         if (agpdev)
  98                 agp_release(agpdev);
  99 }
 100
 101 int DRM(agp_enable)(DRM_OS_IOCTL)
 102 {
 103         drm_device_t   *dev = kdev->si_drv1;
 104         drm_agp_mode_t mode;
 105
 106         if (!dev->agp || !dev->agp->acquired) return EINVAL;
 107
 108         mode = *(drm_agp_mode_t *) data;
 109
 110         dev->agp->mode    = mode.mode;
 111         agp_enable(dev->agp->agpdev, mode.mode);
 112         dev->agp->base    = dev->agp->info.ai_aperture_base;
 113         dev->agp->enabled = 1;
 114         return 0;
 115 }
 116
 117 int DRM(agp_alloc)(DRM_OS_IOCTL)
 118 {
 119         drm_device_t     *dev = kdev->si_drv1;
 120         drm_agp_buffer_t request;
 121         drm_agp_mem_t    *entry;
 122         void             *handle;
 123         unsigned long    pages;
 124         u_int32_t        type;
 125         struct agp_memory_info info;
 126
 127         if (!dev->agp || !dev->agp->acquired) return EINVAL;
 128
 129         request = *(drm_agp_buffer_t *) data;
 130
 131         if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS)))
 132                 return ENOMEM;
 133
 134         bzero(entry, sizeof(*entry));
 135
 136         pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE;
 137         type = (u_int32_t) request.type;
 138
 139         if (!(handle = DRM(alloc_agp)(pages, type))) {
 140                 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
 141                 return ENOMEM;
 142         }
 143
 144         entry->handle    = handle;
 145         entry->bound     = 0;
 146         entry->pages     = pages;
 147         entry->prev      = NULL;
 148         entry->next      = dev->agp->memory;
 149         if (dev->agp->memory) dev->agp->memory->prev = entry;
 150         dev->agp->memory = entry;
 151
 152         agp_memory_info(dev->agp->agpdev, entry->handle, &info);
 153
 154         request.handle   = (unsigned long) entry->handle;
 155         request.physical = info.ami_physical;
 156
 157         *(drm_agp_buffer_t *) data = request;
 158
 159         return 0;
 160 }
 161
 162 static drm_agp_mem_t * DRM(agp_lookup_entry)(drm_device_t *dev, void *handle)
 163 {
 164         drm_agp_mem_t *entry;
 165
 166         for (entry = dev->agp->memory; entry; entry = entry->next) {
 167                 if (entry->handle == handle) return entry;
 168         }
 169         return NULL;
 170 }
 171
 172 int DRM(agp_unbind)(DRM_OS_IOCTL)
 173 {
 174         drm_device_t      *dev = kdev->si_drv1;
 175         drm_agp_binding_t request;
 176         drm_agp_mem_t     *entry;
 177         int retcode;
 178
 179         if (!dev->agp || !dev->agp->acquired) return EINVAL;
 180         request = *(drm_agp_binding_t *) data;
 181         if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
 182                 return EINVAL;
 183         if (!entry->bound) return EINVAL;
 184         retcode=DRM(unbind_agp)(entry->handle);
 185         if (!retcode)
 186         {
 187                 entry->bound=0;
 188                 return 0;
 189         }
 190         else
 191                 return retcode;
 192 }
 193
 194 int DRM(agp_bind)(DRM_OS_IOCTL)
 195 {
 196         drm_device_t      *dev = kdev->si_drv1;
 197         drm_agp_binding_t request;
 198         drm_agp_mem_t     *entry;
 199         int               retcode;
 200         int               page;
 201
 202         DRM_DEBUG("agp_bind, page_size=%x\n", PAGE_SIZE);
 203         if (!dev->agp || !dev->agp->acquired)
 204                 return EINVAL;
 205         request = *(drm_agp_binding_t *) data;
 206         if (!(entry = DRM(agp_lookup_entry)(dev, (void *) request.handle)))
 207                 return EINVAL;
 208         if (entry->bound) return EINVAL;
 209         page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE;
 210         if ((retcode = DRM(bind_agp)(entry->handle, page)))
 211                 return retcode;
 212         entry->bound = dev->agp->base + (page << PAGE_SHIFT);
 213         return 0;
 214 }
 215
 216 int DRM(agp_free)(DRM_OS_IOCTL)
 217 {
 218         drm_device_t     *dev = kdev->si_drv1;
 219         drm_agp_buffer_t request;
 220         drm_agp_mem_t    *entry;
 221
 222         if (!dev->agp || !dev->agp->acquired) 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) DRM(unbind_agp)(entry->handle);
 227
 228         if (entry->prev) entry->prev->next = entry->next;
 229         else             dev->agp->memory  = entry->next;
 230         if (entry->next) entry->next->prev = entry->prev;
 231         DRM(free_agp)(entry->handle, entry->pages);
 232         DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
 233         return 0;
 234 }
 235
 236 drm_agp_head_t *DRM(agp_init)(void)
 237 {
 238         device_t agpdev;
 239         drm_agp_head_t *head   = NULL;
 240         int      agp_available = 1;
 241
 242         agpdev = agp_find_device();
 243         if (!agpdev)
 244                 agp_available = 0;
 245
 246         DRM_DEBUG("agp_available = %d\n", agp_available);
 247
 248         if (agp_available) {
 249                 if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS)))
 250                         return NULL;
 251                 bzero((void *)head, sizeof(*head));
 252                 head->agpdev = agpdev;
 253                 agp_get_info(agpdev, &head->info);
 254                 head->memory = NULL;
 255 #if 0                           /* bogus */
 256                 switch (head->agp_info.chipset) {
 257                 case INTEL_GENERIC:  head->chipset = "Intel";          break;
 258                 case INTEL_LX:       head->chipset = "Intel 440LX";    break;
 259                 case INTEL_BX:       head->chipset = "Intel 440BX";    break;
 260                 case INTEL_GX:       head->chipset = "Intel 440GX";    break;
 261                 case INTEL_I810:     head->chipset = "Intel i810";     break;
 262                 case VIA_GENERIC:    head->chipset = "VIA";            break;
 263                 case VIA_VP3:        head->chipset = "VIA VP3";        break;
 264                 case VIA_MVP3:       head->chipset = "VIA MVP3";       break;
 265                 case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro"; break;
 266                 case SIS_GENERIC:    head->chipset = "SiS";            break;
 267                 case AMD_GENERIC:    head->chipset = "AMD";            break;
 268                 case AMD_IRONGATE:   head->chipset = "AMD Irongate";   break;
 269                 case ALI_GENERIC:    head->chipset = "ALi";            break;
 270                 case ALI_M1541:      head->chipset = "ALi M1541";      break;
 271                 default:
 272                 }
 273 #endif
 274                 DRM_INFO("AGP at 0x%08x %dMB\n",
 275                          head->info.ai_aperture_base,
 276                          head->info.ai_aperture_size >> 20);
 277         }
 278         return head;
 279 }
 280
 281 void DRM(agp_uninit)(void)
 282 {
 283 /* FIXME: What goes here */
 284 }
 285
 286
 287 agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type)
 288 {
 289         device_t agpdev;
 290
 291         agpdev = agp_find_device();
 292         if (!agpdev)
 293                 return NULL;
 294
 295         return agp_alloc_memory(agpdev, type, pages << AGP_PAGE_SHIFT);
 296 }
 297
 298 int DRM(agp_free_memory)(agp_memory *handle)
 299 {
 300         device_t agpdev;
 301
 302         agpdev = agp_find_device();
 303         if (!agpdev || !handle)
 304                 return 0;
 305
 306         agp_free_memory(agpdev, handle);
 307         return 1;
 308 }
 309
 310 int DRM(agp_bind_memory)(agp_memory *handle, off_t start)
 311 {
 312         device_t agpdev;
 313
 314         agpdev = agp_find_device();
 315         if (!agpdev || !handle)
 316                 return EINVAL;
 317
 318         return agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
 319 }
 320
 321 int DRM(agp_unbind_memory)(agp_memory *handle)
 322 {
 323         device_t agpdev;
 324
 325         agpdev = agp_find_device();
 326         if (!agpdev || !handle)
 327                 return EINVAL;
 328
 329         return agp_unbind_memory(agpdev, handle);
 330 }