sys/dev/drm/drm_memory.h

   1 /* drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*-
   2  * Created: Thu Feb  4 14:00:34 1999 by faith@valinux.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  * Authors:
  28  *    Rickard E. (Rik) Faith <faith@valinux.com>
  29  *    Gareth Hughes <gareth@valinux.com>
  30  *
  31  * $FreeBSD: src/sys/dev/drm/drm_memory.h,v 1.8.2.1 2003/04/26 07:05:28 anholt Exp $
  32  */
  33
  34 #include "dev/drm/drmP.h"
  35
  36 #if defined(__FreeBSD__) || defined(__NetBSD__)
  37 #define malloctype DRM(M_DRM)
  38 /* The macros conflicted in the MALLOC_DEFINE */
  39
  40 MALLOC_DEFINE(malloctype, "drm", "DRM Data Structures");
  41
  42 #undef malloctype
  43 #endif
  44
  45 typedef struct drm_mem_stats {
  46         const char        *name;
  47         int               succeed_count;
  48         int               free_count;
  49         int               fail_count;
  50         unsigned long     bytes_allocated;
  51         unsigned long     bytes_freed;
  52 } drm_mem_stats_t;
  53
  54 static DRM_SPINTYPE       DRM(mem_lock);
  55 static unsigned long      DRM(ram_available) = 0; /* In pages */
  56 static unsigned long      DRM(ram_used)      = 0;
  57 static drm_mem_stats_t    DRM(mem_stats)[]   = {
  58         [DRM_MEM_DMA]       = { "dmabufs"  },
  59         [DRM_MEM_SAREA]     = { "sareas"   },
  60         [DRM_MEM_DRIVER]    = { "driver"   },
  61         [DRM_MEM_MAGIC]     = { "magic"    },
  62         [DRM_MEM_IOCTLS]    = { "ioctltab" },
  63         [DRM_MEM_MAPS]      = { "maplist"  },
  64         [DRM_MEM_BUFS]      = { "buflist"  },
  65         [DRM_MEM_SEGS]      = { "seglist"  },
  66         [DRM_MEM_PAGES]     = { "pagelist" },
  67         [DRM_MEM_FILES]     = { "files"    },
  68         [DRM_MEM_QUEUES]    = { "queues"   },
  69         [DRM_MEM_CMDS]      = { "commands" },
  70         [DRM_MEM_MAPPINGS]  = { "mappings" },
  71         [DRM_MEM_BUFLISTS]  = { "buflists" },
  72         [DRM_MEM_AGPLISTS]  = { "agplist"  },
  73         [DRM_MEM_SGLISTS]   = { "sglist"   },
  74         [DRM_MEM_TOTALAGP]  = { "totalagp" },
  75         [DRM_MEM_BOUNDAGP]  = { "boundagp" },
  76         [DRM_MEM_CTXBITMAP] = { "ctxbitmap"},
  77         [DRM_MEM_STUB]      = { "stub"     },
  78         { NULL, 0, }            /* Last entry must be null */
  79 };
  80
  81 void DRM(mem_init)(void)
  82 {
  83         drm_mem_stats_t *mem;
  84
  85 #ifdef __NetBSD__
  86         malloc_type_attach(DRM(M_DRM));
  87 #endif
  88
  89         DRM_SPININIT(DRM(mem_lock), "drm memory");
  90
  91         for (mem = DRM(mem_stats); mem->name; ++mem) {
  92                 mem->succeed_count   = 0;
  93                 mem->free_count      = 0;
  94                 mem->fail_count      = 0;
  95                 mem->bytes_allocated = 0;
  96                 mem->bytes_freed     = 0;
  97         }
  98
  99         DRM(ram_available) = 0; /* si.totalram */
 100         DRM(ram_used)      = 0;
 101 }
 102
 103 void DRM(mem_uninit)(void)
 104 {
 105         DRM_SPINUNINIT(DRM(mem_lock));
 106 }
 107
 108 #ifdef __FreeBSD__
 109 /* drm_mem_info is called whenever a process reads /dev/drm/mem. */
 110 static int
 111 DRM(_mem_info)(drm_mem_stats_t *stats, struct sysctl_oid *oidp, void *arg1,
 112     int arg2, struct sysctl_req *req)
 113 {
 114         drm_mem_stats_t *pt;
 115         char buf[128];
 116         int error;
 117
 118         DRM_SYSCTL_PRINT("                total counts                  "
 119                        " |    outstanding  \n");
 120         DRM_SYSCTL_PRINT("type     alloc freed fail     bytes      freed"
 121                        " | allocs      bytes\n\n");
 122         DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu          |\n",
 123                        "system", 0, 0, 0, DRM(ram_available));
 124         DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu          |\n",
 125                        "locked", 0, 0, 0, DRM(ram_used));
 126         DRM_SYSCTL_PRINT("\n");
 127         for (pt = stats; pt->name; pt++) {
 128                 DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu %10lu | %6d %10ld\n",
 129                                pt->name,
 130                                pt->succeed_count,
 131                                pt->free_count,
 132                                pt->fail_count,
 133                                pt->bytes_allocated,
 134                                pt->bytes_freed,
 135                                pt->succeed_count - pt->free_count,
 136                                (long)pt->bytes_allocated
 137                                - (long)pt->bytes_freed);
 138         }
 139         SYSCTL_OUT(req, "", 1);
 140
 141         return 0;
 142 }
 143
 144 int DRM(mem_info) DRM_SYSCTL_HANDLER_ARGS
 145 {
 146         int ret;
 147         drm_mem_stats_t *stats;
 148
 149         stats = malloc(sizeof(DRM(mem_stats)), DRM(M_DRM), M_NOWAIT);
 150         if (stats == NULL)
 151                 return ENOMEM;
 152
 153         DRM_SPINLOCK(&DRM(mem_lock));
 154         bcopy(DRM(mem_stats), stats, sizeof(DRM(mem_stats)));
 155         DRM_SPINUNLOCK(&DRM(mem_lock));
 156
 157         ret = DRM(_mem_info)(stats, oidp, arg1, arg2, req);
 158
 159         free(stats, DRM(M_DRM));
 160         return ret;
 161 }
 162 #endif /* __FreeBSD__ */
 163
 164 void *DRM(alloc)(size_t size, int area)
 165 {
 166         void *pt;
 167
 168         if (!size) {
 169                 DRM_MEM_ERROR(area, "Allocating 0 bytes\n");
 170                 return NULL;
 171         }
 172
 173         if (!(pt = malloc(size, DRM(M_DRM), M_NOWAIT))) {
 174                 DRM_SPINLOCK(&DRM(mem_lock));
 175                 ++DRM(mem_stats)[area].fail_count;
 176                 DRM_SPINUNLOCK(&DRM(mem_lock));
 177                 return NULL;
 178         }
 179         DRM_SPINLOCK(&DRM(mem_lock));
 180         ++DRM(mem_stats)[area].succeed_count;
 181         DRM(mem_stats)[area].bytes_allocated += size;
 182         DRM_SPINUNLOCK(&DRM(mem_lock));
 183         return pt;
 184 }
 185
 186 void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area)
 187 {
 188         void *pt;
 189
 190         if (!(pt = DRM(alloc)(size, area))) return NULL;
 191         if (oldpt && oldsize) {
 192                 memcpy(pt, oldpt, oldsize);
 193                 DRM(free)(oldpt, oldsize, area);
 194         }
 195         return pt;
 196 }
 197
 198 char *DRM(strdup)(const char *s, int area)
 199 {
 200         char *pt;
 201         int      length = s ? strlen(s) : 0;
 202
 203         if (!(pt = DRM(alloc)(length+1, area))) return NULL;
 204         strcpy(pt, s);
 205         return pt;
 206 }
 207
 208 void DRM(strfree)(char *s, int area)
 209 {
 210         unsigned int size;
 211
 212         if (!s) return;
 213
 214         size = 1 + strlen(s);
 215         DRM(free)((void *)s, size, area);
 216 }
 217
 218 void DRM(free)(void *pt, size_t size, int area)
 219 {
 220         int alloc_count;
 221         int free_count;
 222
 223         if (!pt)
 224                 DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n");
 225         else
 226                 free(pt, DRM(M_DRM));
 227         DRM_SPINLOCK(&DRM(mem_lock));
 228         DRM(mem_stats)[area].bytes_freed += size;
 229         free_count  = ++DRM(mem_stats)[area].free_count;
 230         alloc_count =   DRM(mem_stats)[area].succeed_count;
 231         DRM_SPINUNLOCK(&DRM(mem_lock));
 232         if (free_count > alloc_count) {
 233                 DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n",
 234                               free_count, alloc_count);
 235         }
 236 }
 237
 238 void *DRM(ioremap)( drm_device_t *dev, drm_local_map_t *map )
 239 {
 240         void *pt;
 241
 242         if (!map->size) {
 243                 DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
 244                               "Mapping 0 bytes at 0x%08lx\n", map->offset);
 245                 return NULL;
 246         }
 247 #ifdef __NetBSD__
 248         map->iot = dev->pa.pa_memt;
 249 #endif
 250
 251 #ifdef __FreeBSD__
 252         if (!(pt = pmap_mapdev(map->offset, map->size))) {
 253 #elif defined(__NetBSD__)
 254         if (bus_space_map(map->iot, map->offset, map->size,
 255                 BUS_SPACE_MAP_LINEAR, &map->ioh)) {
 256 #endif
 257                 DRM_SPINLOCK(&DRM(mem_lock));
 258                 ++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count;
 259                 DRM_SPINUNLOCK(&DRM(mem_lock));
 260                 return NULL;
 261         }
 262 #ifdef __NetBSD__
 263         pt = bus_space_vaddr(map->iot, map->ioh);
 264 #endif
 265         DRM_SPINLOCK(&DRM(mem_lock));
 266         ++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
 267         DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += map->size;
 268         DRM_SPINUNLOCK(&DRM(mem_lock));
 269         return pt;
 270 }
 271
 272 /* unused so far */
 273 #if 0
 274 void *DRM(ioremap_nocache)(unsigned long offset, unsigned long size)
 275 {
 276         void *pt;
 277
 278         if (!size) {
 279                 DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
 280                               "Mapping 0 bytes at 0x%08lx\n", offset);
 281                 return NULL;
 282         }
 283
 284         /* FIXME FOR BSD */
 285         if (!(pt = ioremap_nocache(offset, size))) {
 286                 DRM_SPINLOCK(&DRM(mem_lock));
 287                 ++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count;
 288                 DRM_SPINUNLOCK(&DRM(mem_lock));
 289                 return NULL;
 290         }
 291         DRM_SPINLOCK(&DRM(mem_lock));
 292         ++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
 293         DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += size;
 294         DRM_SPINUNLOCK(&DRM(mem_lock));
 295         return pt;
 296 }
 297 #endif
 298
 299 void DRM(ioremapfree)(drm_local_map_t *map)
 300 {
 301         int alloc_count;
 302         int free_count;
 303
 304         if (map->handle == NULL)
 305                 DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
 306                               "Attempt to free NULL pointer\n");
 307         else
 308 #ifdef __FreeBSD__
 309                 pmap_unmapdev((vm_offset_t) map->handle, map->size);
 310 #elif defined(__NetBSD__)
 311                 bus_space_unmap(map->iot, map->ioh, map->size);
 312 #endif
 313
 314         DRM_SPINLOCK(&DRM(mem_lock));
 315         DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_freed += map->size;
 316         free_count  = ++DRM(mem_stats)[DRM_MEM_MAPPINGS].free_count;
 317         alloc_count =   DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
 318         DRM_SPINUNLOCK(&DRM(mem_lock));
 319         if (free_count > alloc_count) {
 320                 DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
 321                               "Excess frees: %d frees, %d allocs\n",
 322                               free_count, alloc_count);
 323         }
 324 }
 325
 326 #if __REALLY_HAVE_AGP
 327 agp_memory *DRM(alloc_agp)(int pages, u32 type)
 328 {
 329         agp_memory *handle;
 330
 331         if (!pages) {
 332                 DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n");
 333                 return NULL;
 334         }
 335
 336         if ((handle = DRM(agp_allocate_memory)(pages, type))) {
 337                 DRM_SPINLOCK(&DRM(mem_lock));
 338                 ++DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count;
 339                 DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_allocated
 340                         += pages << PAGE_SHIFT;
 341                 DRM_SPINUNLOCK(&DRM(mem_lock));
 342                 return handle;
 343         }
 344         DRM_SPINLOCK(&DRM(mem_lock));
 345         ++DRM(mem_stats)[DRM_MEM_TOTALAGP].fail_count;
 346         DRM_SPINUNLOCK(&DRM(mem_lock));
 347         return NULL;
 348 }
 349
 350 int DRM(free_agp)(agp_memory *handle, int pages)
 351 {
 352         int           alloc_count;
 353         int           free_count;
 354
 355         if (!handle) {
 356                 DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
 357                               "Attempt to free NULL AGP handle\n");
 358                 return DRM_ERR(EINVAL);
 359         }
 360
 361         if (DRM(agp_free_memory)(handle)) {
 362                 DRM_SPINLOCK(&DRM(mem_lock));
 363                 free_count  = ++DRM(mem_stats)[DRM_MEM_TOTALAGP].free_count;
 364                 alloc_count =   DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count;
 365                 DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_freed
 366                         += pages << PAGE_SHIFT;
 367                 DRM_SPINUNLOCK(&DRM(mem_lock));
 368                 if (free_count > alloc_count) {
 369                         DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
 370                                       "Excess frees: %d frees, %d allocs\n",
 371                                       free_count, alloc_count);
 372                 }
 373                 return 0;
 374         }
 375         return DRM_ERR(EINVAL);
 376 }
 377
 378 int DRM(bind_agp)(agp_memory *handle, unsigned int start)
 379 {
 380         int retcode;
 381         device_t dev = DRM_AGP_FIND_DEVICE();
 382         struct agp_memory_info info;
 383
 384         if (!dev)
 385                 return EINVAL;
 386
 387         if (!handle) {
 388                 DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
 389                               "Attempt to bind NULL AGP handle\n");
 390                 return DRM_ERR(EINVAL);
 391         }
 392
 393         if (!(retcode = DRM(agp_bind_memory)(handle, start))) {
 394                 DRM_SPINLOCK(&DRM(mem_lock));
 395                 ++DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count;
 396                 agp_memory_info(dev, handle, &info);
 397                 DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_allocated
 398                         += info.ami_size;
 399                 DRM_SPINUNLOCK(&DRM(mem_lock));
 400                 return DRM_ERR(0);
 401         }
 402         DRM_SPINLOCK(&DRM(mem_lock));
 403         ++DRM(mem_stats)[DRM_MEM_BOUNDAGP].fail_count;
 404         DRM_SPINUNLOCK(&DRM(mem_lock));
 405         return DRM_ERR(retcode);
 406 }
 407
 408 int DRM(unbind_agp)(agp_memory *handle)
 409 {
 410         int alloc_count;
 411         int free_count;
 412         int retcode = EINVAL;
 413         device_t dev = DRM_AGP_FIND_DEVICE();
 414         struct agp_memory_info info;
 415
 416         if (!dev)
 417                 return EINVAL;
 418
 419         if (!handle) {
 420                 DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
 421                               "Attempt to unbind NULL AGP handle\n");
 422                 return DRM_ERR(retcode);
 423         }
 424
 425         agp_memory_info(dev, handle, &info);
 426
 427         if ((retcode = DRM(agp_unbind_memory)(handle)))
 428                 return DRM_ERR(retcode);
 429
 430         DRM_SPINLOCK(&DRM(mem_lock));
 431         free_count  = ++DRM(mem_stats)[DRM_MEM_BOUNDAGP].free_count;
 432         alloc_count = DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count;
 433         DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_freed
 434                 += info.ami_size;
 435         DRM_SPINUNLOCK(&DRM(mem_lock));
 436         if (free_count > alloc_count) {
 437                 DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
 438                               "Excess frees: %d frees, %d allocs\n",
 439                               free_count, alloc_count);
 440         }
 441         return DRM_ERR(retcode);
 442 }
 443 #endif