1 /*- 2 * Copyright 2003 Eric Anholt 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * $FreeBSD: src/sys/dev/drm2/drm_sysctl.c,v 1.1 2012/05/22 11:07:44 kib Exp $ 24 */ 25 26 /** @file drm_sysctl.c 27 * Implementation of various sysctls for controlling DRM behavior and reporting 28 * debug information. 29 */ 30 31 #include <sys/conf.h> 32 #include <sys/sysctl.h> 33 #include <sys/types.h> 34 35 #include <drm/drmP.h> 36 #include "drm_legacy.h" 37 38 SYSCTL_NODE(_hw, OID_AUTO, dri, CTLFLAG_RD, 0, "DRI Graphics"); 39 SYSCTL_INT(_hw_dri, OID_AUTO, debug, CTLFLAG_RW, &drm_debug, 0, 40 "Enable debugging output"); 41 SYSCTL_INT(_hw_dri, OID_AUTO, vblank_offdelay, CTLFLAG_RW, 42 &drm_vblank_offdelay, 0, "Delay until vblank irq auto-disable"); 43 SYSCTL_INT(_hw_dri, OID_AUTO, timestamp_precision, CTLFLAG_RW, 44 &drm_timestamp_precision, 0, "Max. error on timestamps"); 45 46 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS; 47 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS; 48 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS; 49 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS; 50 51 struct drm_sysctl_list { 52 const char *name; 53 int (*f) DRM_SYSCTL_HANDLER_ARGS; 54 } drm_sysctl_list[] = { 55 {"name", drm_name_info}, 56 {"vm", drm_vm_info}, 57 {"clients", drm_clients_info}, 58 {"bufs", drm_bufs_info}, 59 }; 60 #define DRM_SYSCTL_ENTRIES NELEM(drm_sysctl_list) 61 62 int drm_sysctl_init(struct drm_device *dev) 63 { 64 struct drm_sysctl_info *info; 65 struct sysctl_oid *oid; 66 struct sysctl_oid *top; 67 int i, unit; 68 69 info = kzalloc(sizeof *info, GFP_KERNEL); 70 if ( !info ) 71 return 1; 72 dev->sysctl = info; 73 74 unit = device_get_unit(dev->dev->bsddev); 75 if (unit > 9) 76 return 1; 77 78 /* Add the hw.dri.x for our device */ 79 info->name[0] = '0' + unit; 80 info->name[1] = 0; 81 top = SYSCTL_ADD_NODE(&info->ctx, &SYSCTL_NODE_CHILDREN(_hw, dri), 82 OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL); 83 if (!top) 84 return 1; 85 86 for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) { 87 oid = SYSCTL_ADD_OID(&info->ctx, 88 SYSCTL_CHILDREN(top), 89 OID_AUTO, 90 drm_sysctl_list[i].name, 91 CTLTYPE_STRING | CTLFLAG_RD, 92 dev, 93 0, 94 drm_sysctl_list[i].f, 95 "A", 96 NULL); 97 if (!oid) 98 return 1; 99 } 100 if (dev->driver->sysctl_init != NULL) 101 dev->driver->sysctl_init(dev, &info->ctx, top); 102 103 return (0); 104 } 105 106 int drm_sysctl_cleanup(struct drm_device *dev) 107 { 108 int error; 109 110 error = sysctl_ctx_free(&dev->sysctl->ctx); 111 kfree(dev->sysctl); 112 dev->sysctl = NULL; 113 if (dev->driver->sysctl_cleanup != NULL) 114 dev->driver->sysctl_cleanup(dev); 115 116 return (error); 117 } 118 119 #define DRM_SYSCTL_PRINT(fmt, arg...) \ 120 do { \ 121 ksnprintf(buf, sizeof(buf), fmt, ##arg); \ 122 retcode = SYSCTL_OUT(req, buf, strlen(buf)); \ 123 if (retcode) \ 124 goto done; \ 125 } while (0) 126 127 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS 128 { 129 struct drm_device *dev = arg1; 130 char buf[128]; 131 int retcode; 132 int hasunique = 0; 133 134 DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, 135 devid_from_dev(dev->devnode)); 136 137 DRM_LOCK(dev); 138 if (dev->unique) { 139 ksnprintf(buf, sizeof(buf), " %s", dev->unique); 140 hasunique = 1; 141 } 142 DRM_UNLOCK(dev); 143 144 if (hasunique) 145 SYSCTL_OUT(req, buf, strlen(buf)); 146 147 SYSCTL_OUT(req, "", 1); 148 149 done: 150 return retcode; 151 } 152 153 /** 154 * Called when "/proc/dri/.../vm" is read. 155 * 156 * Prints information about all mappings in drm_device::maplist. 157 */ 158 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS 159 { 160 char buf[128]; 161 int retcode; 162 struct drm_device *dev = arg1; 163 struct drm_local_map *map; 164 struct drm_map_list *r_list; 165 166 /* Hardcoded from _DRM_FRAME_BUFFER, 167 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and 168 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ 169 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; 170 const char *type; 171 int i; 172 173 DRM_LOCK(dev); 174 DRM_SYSCTL_PRINT("\nslot offset size " 175 "type flags address handle mtrr\n"); 176 i = 0; 177 list_for_each_entry(r_list, &dev->maplist, head) { 178 map = r_list->map; 179 if (!map) 180 continue; 181 if (map->type < 0 || map->type > 5) 182 type = "??"; 183 else 184 type = types[map->type]; 185 186 DRM_SYSCTL_PRINT("%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%08lx ", 187 i, 188 (unsigned long long)map->offset, 189 map->size, type, map->flags, 190 (unsigned long) r_list->user_token); 191 if (map->mtrr < 0) 192 DRM_SYSCTL_PRINT("none\n"); 193 else 194 DRM_SYSCTL_PRINT("%4d\n", map->mtrr); 195 i++; 196 197 } 198 SYSCTL_OUT(req, "", 1); 199 DRM_UNLOCK(dev); 200 201 done: 202 return 0; 203 } 204 205 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS 206 { 207 struct drm_device *dev = arg1; 208 struct drm_device_dma *dma = dev->dma; 209 struct drm_device_dma tempdma; 210 int *templists; 211 int i; 212 char buf[128]; 213 int retcode; 214 215 /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary 216 * copy of the whole structure and the relevant data from buflist. 217 */ 218 DRM_LOCK(dev); 219 if (dma == NULL) { 220 DRM_UNLOCK(dev); 221 return 0; 222 } 223 tempdma = *dma; 224 templists = kmalloc(sizeof(int) * dma->buf_count, M_DRM, 225 M_WAITOK | M_NULLOK); 226 for (i = 0; i < dma->buf_count; i++) 227 templists[i] = dma->buflist[i]->list; 228 dma = &tempdma; 229 DRM_UNLOCK(dev); 230 231 DRM_SYSCTL_PRINT("\n o size count free segs pages kB\n"); 232 for (i = 0; i <= DRM_MAX_ORDER; i++) { 233 if (dma->bufs[i].buf_count) 234 DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d\n", 235 i, 236 dma->bufs[i].buf_size, 237 dma->bufs[i].buf_count, 238 dma->bufs[i].seg_count, 239 dma->bufs[i].seg_count 240 *(1 << dma->bufs[i].page_order), 241 (dma->bufs[i].seg_count 242 * (1 << dma->bufs[i].page_order)) 243 * (int)PAGE_SIZE / 1024); 244 } 245 DRM_SYSCTL_PRINT("\n"); 246 for (i = 0; i < dma->buf_count; i++) { 247 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n"); 248 DRM_SYSCTL_PRINT(" %d", templists[i]); 249 } 250 DRM_SYSCTL_PRINT("\n"); 251 252 SYSCTL_OUT(req, "", 1); 253 done: 254 kfree(templists); 255 return retcode; 256 } 257 258 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS 259 { 260 struct drm_device *dev = arg1; 261 struct drm_file *priv, *tempprivs; 262 char buf[128]; 263 int retcode; 264 int privcount, i; 265 266 DRM_LOCK(dev); 267 268 privcount = 0; 269 list_for_each_entry(priv, &dev->filelist, lhead) 270 privcount++; 271 272 tempprivs = kmalloc(sizeof(struct drm_file) * privcount, M_DRM, 273 M_WAITOK | M_NULLOK); 274 if (tempprivs == NULL) { 275 DRM_UNLOCK(dev); 276 return ENOMEM; 277 } 278 i = 0; 279 list_for_each_entry(priv, &dev->filelist, lhead) 280 tempprivs[i++] = *priv; 281 282 DRM_UNLOCK(dev); 283 284 DRM_SYSCTL_PRINT( 285 "\na dev pid magic ioctls\n"); 286 for (i = 0; i < privcount; i++) { 287 priv = &tempprivs[i]; 288 DRM_SYSCTL_PRINT("%c %-12s %5d %10u %10lu\n", 289 priv->authenticated ? 'y' : 'n', 290 devtoname(priv->dev->devnode), 291 priv->pid, 292 priv->magic, 293 0UL); 294 } 295 296 SYSCTL_OUT(req, "", 1); 297 done: 298 kfree(tempprivs); 299 return retcode; 300 } 301