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