1 /*- 2 * Copyright (c) 2006 IronPort Systems 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/queue.h> 33 #include <sys/blist.h> 34 #include <sys/conf.h> 35 #include <sys/exec.h> 36 #include <sys/filedesc.h> 37 #include <sys/kernel.h> 38 #include <sys/linker.h> 39 #include <sys/malloc.h> 40 #include <sys/mount.h> 41 #include <sys/mutex.h> 42 #include <sys/proc.h> 43 #include <sys/resourcevar.h> 44 #include <sys/sbuf.h> 45 #include <sys/smp.h> 46 #include <sys/socket.h> 47 #include <sys/vnode.h> 48 #include <sys/bus.h> 49 #include <sys/pciio.h> 50 51 #include <dev/pci/pcivar.h> 52 #include <dev/pci/pcireg.h> 53 54 #include <net/if.h> 55 56 #include <vm/vm.h> 57 #include <vm/pmap.h> 58 #include <vm/vm_map.h> 59 #include <vm/vm_param.h> 60 #include <vm/vm_object.h> 61 #include <vm/swap_pager.h> 62 63 #include <machine/bus.h> 64 65 #include "opt_compat.h" 66 #ifdef COMPAT_LINUX32 /* XXX */ 67 #include <machine/../linux32/linux.h> 68 #else 69 #include <machine/../linux/linux.h> 70 #endif 71 #include <compat/linux/linux_ioctl.h> 72 #include <compat/linux/linux_mib.h> 73 #include <compat/linux/linux_util.h> 74 #include <fs/pseudofs/pseudofs.h> 75 76 struct scsi_host_queue { 77 TAILQ_ENTRY(scsi_host_queue) scsi_host_next; 78 char *path; 79 char *name; 80 }; 81 82 TAILQ_HEAD(,scsi_host_queue) scsi_host_q; 83 84 static int host_number = 0; 85 86 static int 87 atoi(const char *str) 88 { 89 return (int)strtol(str, (char **)NULL, 10); 90 } 91 92 /* 93 * Filler function for proc_name 94 */ 95 static int 96 linsysfs_scsiname(PFS_FILL_ARGS) 97 { 98 struct scsi_host_queue *scsi_host; 99 int index; 100 101 if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { 102 index = atoi(&pn->pn_parent->pn_name[4]); 103 } else { 104 sbuf_printf(sb, "unknown\n"); 105 return (0); 106 } 107 TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { 108 if (index-- == 0) { 109 sbuf_printf(sb, "%s\n", scsi_host->name); 110 return (0); 111 } 112 } 113 sbuf_printf(sb, "unknown\n"); 114 return (0); 115 } 116 117 /* 118 * Filler function for device sym-link 119 */ 120 static int 121 linsysfs_link_scsi_host(PFS_FILL_ARGS) 122 { 123 struct scsi_host_queue *scsi_host; 124 int index; 125 126 if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { 127 index = atoi(&pn->pn_parent->pn_name[4]); 128 } else { 129 sbuf_printf(sb, "unknown\n"); 130 return (0); 131 } 132 TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { 133 if (index-- == 0) { 134 sbuf_printf(sb, "../../../devices%s", scsi_host->path); 135 return(0); 136 } 137 } 138 sbuf_printf(sb, "unknown\n"); 139 return (0); 140 } 141 142 #define PCI_DEV "pci" 143 static int 144 linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, char *path, 145 char *prefix) 146 { 147 struct scsi_host_queue *scsi_host; 148 struct pfs_node *sub_dir; 149 int i, nchildren; 150 device_t *children, parent; 151 devclass_t devclass; 152 const char *name = NULL; 153 struct pci_devinfo *dinfo; 154 char *device, *host, *new_path = path; 155 156 parent = device_get_parent(dev); 157 if (parent) { 158 devclass = device_get_devclass(parent); 159 if (devclass != NULL) 160 name = devclass_get_name(devclass); 161 if (name && strcmp(name, PCI_DEV) == 0) { 162 dinfo = device_get_ivars(dev); 163 if (dinfo) { 164 device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 165 new_path = malloc(MAXPATHLEN, M_TEMP, 166 M_WAITOK); 167 new_path[0] = '\000'; 168 strcpy(new_path, path); 169 host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 170 device[0] = '\000'; 171 sprintf(device, "%s:%02x:%02x.%x", 172 prefix, 173 dinfo->cfg.bus, 174 dinfo->cfg.slot, 175 dinfo->cfg.func); 176 strcat(new_path, "/"); 177 strcat(new_path, device); 178 dir = pfs_create_dir(dir, device, 179 NULL, NULL, NULL, 0); 180 181 if (dinfo->cfg.baseclass == PCIC_STORAGE) { 182 /* DJA only make this if needed */ 183 sprintf(host, "host%d", host_number++); 184 strcat(new_path, "/"); 185 strcat(new_path, host); 186 pfs_create_dir(dir, host, 187 NULL, NULL, NULL, 0); 188 scsi_host = malloc(sizeof( 189 struct scsi_host_queue), 190 M_DEVBUF, M_NOWAIT); 191 scsi_host->path = malloc( 192 strlen(new_path) + 1, 193 M_DEVBUF, M_NOWAIT); 194 scsi_host->path[0] = '\000'; 195 bcopy(new_path, scsi_host->path, 196 strlen(new_path) + 1); 197 scsi_host->name = "unknown"; 198 199 sub_dir = pfs_create_dir(scsi, host, 200 NULL, NULL, NULL, 0); 201 pfs_create_link(sub_dir, "device", 202 &linsysfs_link_scsi_host, 203 NULL, NULL, NULL, 0); 204 pfs_create_file(sub_dir, "proc_name", 205 &linsysfs_scsiname, 206 NULL, NULL, NULL, PFS_RD); 207 scsi_host->name 208 = linux_driver_get_name_dev(dev); 209 TAILQ_INSERT_TAIL(&scsi_host_q, 210 scsi_host, scsi_host_next); 211 } 212 free(device, M_TEMP); 213 free(host, M_TEMP); 214 } 215 } 216 } 217 218 device_get_children(dev, &children, &nchildren); 219 for (i = 0; i < nchildren; i++) { 220 if (children[i]) 221 linsysfs_run_bus(children[i], dir, scsi, new_path, prefix); 222 } 223 if (new_path != path) 224 free(new_path, M_TEMP); 225 226 return (1); 227 } 228 229 /* 230 * Constructor 231 */ 232 static int 233 linsysfs_init(PFS_INIT_ARGS) 234 { 235 struct pfs_node *root; 236 struct pfs_node *dir; 237 struct pfs_node *pci; 238 struct pfs_node *scsi; 239 devclass_t devclass; 240 device_t dev; 241 242 TAILQ_INIT(&scsi_host_q); 243 244 root = pi->pi_root; 245 246 /* /sys/class/... */ 247 scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0); 248 scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0); 249 250 /* /sys/device */ 251 dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0); 252 253 /* /sys/device/pci0000:00 */ 254 pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0); 255 256 devclass = devclass_find("root"); 257 if (devclass == NULL) { 258 return (0); 259 } 260 261 dev = devclass_get_device(devclass, 0); 262 linsysfs_run_bus(dev, pci, scsi, "/pci0000:00", "0000"); 263 return (0); 264 } 265 266 /* 267 * Destructor 268 */ 269 static int 270 linsysfs_uninit(PFS_INIT_ARGS) 271 { 272 struct scsi_host_queue *scsi_host, *scsi_host_tmp; 273 274 TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next, 275 scsi_host_tmp) { 276 TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next); 277 free(scsi_host->path, M_TEMP); 278 free(scsi_host, M_TEMP); 279 } 280 281 return (0); 282 } 283 284 PSEUDOFS(linsysfs, 1, 0); 285 MODULE_DEPEND(linsysfs, linux, 1, 1, 1); 286