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 32#include "drmP.h" 33#include <linux/module.h> 34 35#if __REALLY_HAVE_AGP 36 37#define DRM_AGP_GET (drm_agp_t *)inter_module_get("drm_agp") 38#define DRM_AGP_PUT inter_module_put("drm_agp") 39 40static const drm_agp_t *drm_agp = NULL; 41 42int DRM(agp_info)(struct inode *inode, struct file *filp, 43 unsigned int cmd, unsigned long arg) 44{ 45 drm_file_t *priv = filp->private_data; 46 drm_device_t *dev = priv->dev; 47 agp_kern_info *kern; 48 drm_agp_info_t info; 49 50 if (!dev->agp || !dev->agp->acquired || !drm_agp->copy_info) 51 return -EINVAL; 52 53 kern = &dev->agp->agp_info; 54 info.agp_version_major = kern->version.major; 55 info.agp_version_minor = kern->version.minor; 56 info.mode = kern->mode; 57 info.aperture_base = kern->aper_base; 58 info.aperture_size = kern->aper_size * 1024 * 1024; 59 info.memory_allowed = kern->max_memory << PAGE_SHIFT; 60 info.memory_used = kern->current_memory << PAGE_SHIFT; 61 info.id_vendor = kern->device->vendor; 62 info.id_device = kern->device->device; 63 64 if (copy_to_user((drm_agp_info_t *)arg, &info, sizeof(info))) 65 return -EFAULT; 66 return 0; 67} 68 69int DRM(agp_acquire)(struct inode *inode, struct file *filp, 70 unsigned int cmd, unsigned long arg) 71{ 72 drm_file_t *priv = filp->private_data; 73 drm_device_t *dev = priv->dev; 74 int retcode; 75 76 if (!dev->agp || dev->agp->acquired || !drm_agp->acquire) 77 return -EINVAL; 78 if ((retcode = drm_agp->acquire())) return retcode; 79 dev->agp->acquired = 1; 80 return 0; 81} 82 83int DRM(agp_release)(struct inode *inode, struct file *filp, 84 unsigned int cmd, unsigned long arg) 85{ 86 drm_file_t *priv = filp->private_data; 87 drm_device_t *dev = priv->dev; 88 89 if (!dev->agp || !dev->agp->acquired || !drm_agp->release) 90 return -EINVAL; 91 drm_agp->release(); 92 dev->agp->acquired = 0; 93 return 0; 94 95} 96 97void DRM(agp_do_release)(void) 98{ 99 if (drm_agp->release) drm_agp->release(); 100} 101 102int DRM(agp_enable)(struct inode *inode, struct file *filp, 103 unsigned int cmd, unsigned long arg) 104{ 105 drm_file_t *priv = filp->private_data; 106 drm_device_t *dev = priv->dev; 107 drm_agp_mode_t mode; 108 109 if (!dev->agp || !dev->agp->acquired || !drm_agp->enable) 110 return -EINVAL; 111 112 if (copy_from_user(&mode, (drm_agp_mode_t *)arg, sizeof(mode))) 113 return -EFAULT; 114 115 dev->agp->mode = mode.mode; 116 drm_agp->enable(mode.mode); 117 dev->agp->base = dev->agp->agp_info.aper_base; 118 dev->agp->enabled = 1; 119 return 0; 120} 121 122int DRM(agp_alloc)(struct inode *inode, struct file *filp, 123 unsigned int cmd, unsigned long arg) 124{ 125 drm_file_t *priv = filp->private_data; 126 drm_device_t *dev = priv->dev; 127 drm_agp_buffer_t request; 128 drm_agp_mem_t *entry; 129 agp_memory *memory; 130 unsigned long pages; 131 u32 type; 132 133 if (!dev->agp || !dev->agp->acquired) return -EINVAL; 134 if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request))) 135 return -EFAULT; 136 if (!(entry = DRM(alloc)(sizeof(*entry), DRM_MEM_AGPLISTS))) 137 return -ENOMEM; 138 139 memset(entry, 0, sizeof(*entry)); 140 141 pages = (request.size + PAGE_SIZE - 1) / PAGE_SIZE; 142 type = (u32) request.type; 143 144 if (!(memory = DRM(alloc_agp)(pages, type))) { 145 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); 146 return -ENOMEM; 147 } 148 149 entry->handle = (unsigned long)memory->memory; 150 entry->memory = memory; 151 entry->bound = 0; 152 entry->pages = pages; 153 entry->prev = NULL; 154 entry->next = dev->agp->memory; 155 if (dev->agp->memory) dev->agp->memory->prev = entry; 156 dev->agp->memory = entry; 157 158 request.handle = entry->handle; 159 request.physical = memory->physical; 160 161 if (copy_to_user((drm_agp_buffer_t *)arg, &request, sizeof(request))) { 162 dev->agp->memory = entry->next; 163 dev->agp->memory->prev = NULL; 164 DRM(free_agp)(memory, pages); 165 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); 166 return -EFAULT; 167 } 168 return 0; 169} 170 171static drm_agp_mem_t *DRM(agp_lookup_entry)(drm_device_t *dev, 172 unsigned long handle) 173{ 174 drm_agp_mem_t *entry; 175 176 for (entry = dev->agp->memory; entry; entry = entry->next) { 177 if (entry->handle == handle) return entry; 178 } 179 return NULL; 180} 181 182int DRM(agp_unbind)(struct inode *inode, struct file *filp, 183 unsigned int cmd, unsigned long arg) 184{ 185 drm_file_t *priv = filp->private_data; 186 drm_device_t *dev = priv->dev; 187 drm_agp_binding_t request; 188 drm_agp_mem_t *entry; 189 190 if (!dev->agp || !dev->agp->acquired) return -EINVAL; 191 if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request))) 192 return -EFAULT; 193 if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) 194 return -EINVAL; 195 if (!entry->bound) return -EINVAL; 196 return DRM(unbind_agp)(entry->memory); 197} 198 199int DRM(agp_bind)(struct inode *inode, struct file *filp, 200 unsigned int cmd, unsigned long arg) 201{ 202 drm_file_t *priv = filp->private_data; 203 drm_device_t *dev = priv->dev; 204 drm_agp_binding_t request; 205 drm_agp_mem_t *entry; 206 int retcode; 207 int page; 208 209 if (!dev->agp || !dev->agp->acquired || !drm_agp->bind_memory) 210 return -EINVAL; 211 if (copy_from_user(&request, (drm_agp_binding_t *)arg, sizeof(request))) 212 return -EFAULT; 213 if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) 214 return -EINVAL; 215 if (entry->bound) return -EINVAL; 216 page = (request.offset + PAGE_SIZE - 1) / PAGE_SIZE; 217 if ((retcode = DRM(bind_agp)(entry->memory, page))) return retcode; 218 entry->bound = dev->agp->base + (page << PAGE_SHIFT); 219 DRM_DEBUG("base = 0x%lx entry->bound = 0x%lx\n", 220 dev->agp->base, entry->bound); 221 return 0; 222} 223 224int DRM(agp_free)(struct inode *inode, struct file *filp, 225 unsigned int cmd, unsigned long arg) 226{ 227 drm_file_t *priv = filp->private_data; 228 drm_device_t *dev = priv->dev; 229 drm_agp_buffer_t request; 230 drm_agp_mem_t *entry; 231 232 if (!dev->agp || !dev->agp->acquired) return -EINVAL; 233 if (copy_from_user(&request, (drm_agp_buffer_t *)arg, sizeof(request))) 234 return -EFAULT; 235 if (!(entry = DRM(agp_lookup_entry)(dev, request.handle))) 236 return -EINVAL; 237 if (entry->bound) DRM(unbind_agp)(entry->memory); 238 239 if (entry->prev) entry->prev->next = entry->next; 240 else dev->agp->memory = entry->next; 241 if (entry->next) entry->next->prev = entry->prev; 242 DRM(free_agp)(entry->memory, entry->pages); 243 DRM(free)(entry, sizeof(*entry), DRM_MEM_AGPLISTS); 244 return 0; 245} 246 247drm_agp_head_t *DRM(agp_init)(void) 248{ 249 drm_agp_head_t *head = NULL; 250 251 drm_agp = DRM_AGP_GET; 252 if (drm_agp) { 253 if (!(head = DRM(alloc)(sizeof(*head), DRM_MEM_AGPLISTS))) 254 return NULL; 255 memset((void *)head, 0, sizeof(*head)); 256 drm_agp->copy_info(&head->agp_info); 257 if (head->agp_info.chipset == NOT_SUPPORTED) { 258 DRM(free)(head, sizeof(*head), DRM_MEM_AGPLISTS); 259 return NULL; 260 } 261 head->memory = NULL; 262 switch (head->agp_info.chipset) { 263 case INTEL_GENERIC: head->chipset = "Intel"; break; 264 case INTEL_LX: head->chipset = "Intel 440LX"; break; 265 case INTEL_BX: head->chipset = "Intel 440BX"; break; 266 case INTEL_GX: head->chipset = "Intel 440GX"; break; 267 case INTEL_I810: head->chipset = "Intel i810"; break; 268 case INTEL_I815: head->chipset = "Intel i815"; break; 269 case INTEL_I820: head->chipset = "Intel i820"; break; 270 case INTEL_I840: head->chipset = "Intel i840"; break; 271 case INTEL_I845: head->chipset = "Intel i845"; break; 272 case INTEL_I850: head->chipset = "Intel i850"; break; 273 274 case VIA_GENERIC: head->chipset = "VIA"; break; 275 case VIA_VP3: head->chipset = "VIA VP3"; break; 276 case VIA_MVP3: head->chipset = "VIA MVP3"; break; 277 case VIA_MVP4: head->chipset = "VIA MVP4"; break; 278 case VIA_APOLLO_KX133: head->chipset = "VIA Apollo KX133"; 279 break; 280 case VIA_APOLLO_KT133: head->chipset = "VIA Apollo KT133"; 281 break; 282 case VIA_APOLLO_PRO: head->chipset = "VIA Apollo Pro"; 283 break; 284 285 case SIS_GENERIC: head->chipset = "SiS"; break; 286 case AMD_GENERIC: head->chipset = "AMD"; break; 287 case AMD_IRONGATE: head->chipset = "AMD Irongate"; break; 288 case AMD_8151: head->chipset = "AMD 8151"; break; 289 case ALI_GENERIC: head->chipset = "ALi"; break; 290 case ALI_M1541: head->chipset = "ALi M1541"; break; 291 292 case ALI_M1621: head->chipset = "ALi M1621"; break; 293 case ALI_M1631: head->chipset = "ALi M1631"; break; 294 case ALI_M1632: head->chipset = "ALi M1632"; break; 295 case ALI_M1641: head->chipset = "ALi M1641"; break; 296 case ALI_M1644: head->chipset = "ALi M1644"; break; 297 case ALI_M1647: head->chipset = "ALi M1647"; break; 298 case ALI_M1651: head->chipset = "ALi M1651"; break; 299 300 case SVWRKS_HE: head->chipset = "Serverworks HE"; 301 break; 302 case SVWRKS_LE: head->chipset = "Serverworks LE"; 303 break; 304 case SVWRKS_GENERIC: head->chipset = "Serverworks Generic"; 305 break; 306 307 case HP_ZX1: head->chipset = "HP ZX1"; break; 308 309 default: head->chipset = "Unknown"; break; 310 } 311 312 head->cant_use_aperture = head->agp_info.cant_use_aperture; 313 head->page_mask = head->agp_info.page_mask; 314 315 DRM_INFO("AGP %d.%d on %s @ 0x%08lx %ZuMB\n", 316 head->agp_info.version.major, 317 head->agp_info.version.minor, 318 head->chipset, 319 head->agp_info.aper_base, 320 head->agp_info.aper_size); 321 } 322 return head; 323} 324 325void DRM(agp_uninit)(void) 326{ 327 DRM_AGP_PUT; 328 drm_agp = NULL; 329} 330 331agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type) 332{ 333 if (!drm_agp->allocate_memory) return NULL; 334 return drm_agp->allocate_memory(pages, type); 335} 336 337int DRM(agp_free_memory)(agp_memory *handle) 338{ 339 if (!handle || !drm_agp->free_memory) return 0; 340 drm_agp->free_memory(handle); 341 return 1; 342} 343 344int DRM(agp_bind_memory)(agp_memory *handle, off_t start) 345{ 346 if (!handle || !drm_agp->bind_memory) return -EINVAL; 347 return drm_agp->bind_memory(handle, start); 348} 349 350int DRM(agp_unbind_memory)(agp_memory *handle) 351{ 352 if (!handle || !drm_agp->unbind_memory) return -EINVAL; 353 return drm_agp->unbind_memory(handle); 354} 355 356#endif /* __REALLY_HAVE_AGP */ 357