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/queue.h> 32#include <sys/blist.h> 33#include <sys/conf.h> 34#include <sys/exec.h> 35#include <sys/filedesc.h> 36#include <sys/kernel.h> 37#include <sys/linker.h> 38#include <sys/malloc.h> 39#include <sys/mount.h> 40#include <sys/mutex.h> 41#include <sys/proc.h> 42#include <sys/resourcevar.h> 43#include <sys/sbuf.h> 44#include <sys/smp.h> 45#include <sys/socket.h> 46#include <sys/vnode.h> 47#include <sys/bus.h> 48#include <sys/pciio.h> 49 50#include <dev/pci/pcivar.h> 51#include <dev/pci/pcireg.h> 52 53#include <net/if.h> 54 55#include <vm/vm.h> 56#include <vm/pmap.h> 57#include <vm/vm_map.h> 58#include <vm/vm_param.h> 59#include <vm/vm_object.h> 60#include <vm/swap_pager.h> 61 62#include <machine/bus.h> 63 64#include "opt_compat.h" 65#ifdef COMPAT_LINUX32 /* XXX */ 66#include <machine/../linux32/linux.h> 67#else 68#include <machine/../linux/linux.h> 69#endif 70#include <compat/linux/linux_ioctl.h> 71#include <compat/linux/linux_mib.h> 72#include <compat/linux/linux_util.h> 73#include <fs/pseudofs/pseudofs.h> 74 75struct scsi_host_queue { 76 TAILQ_ENTRY(scsi_host_queue) scsi_host_next; 77 char *path; 78 char *name; 79}; 80 81TAILQ_HEAD(,scsi_host_queue) scsi_host_q; 82 83static int host_number = 0; 84 85static int 86atoi(const char *str) 87{ 88 return (int)strtol(str, (char **)NULL, 10); 89} 90 91/* 92 * Filler function for proc_name 93 */ 94static int 95linsysfs_scsiname(PFS_FILL_ARGS) 96{ 97 struct scsi_host_queue *scsi_host; 98 int index; 99 100 if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { 101 index = atoi(&pn->pn_parent->pn_name[4]); 102 } else { 103 sbuf_printf(sb, "unknown\n"); 104 return (0); 105 } 106 TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { 107 if (index-- == 0) { 108 sbuf_printf(sb, "%s\n", scsi_host->name); 109 return (0); 110 } 111 } 112 sbuf_printf(sb, "unknown\n"); 113 return (0); 114} 115 116/* 117 * Filler function for device sym-link 118 */ 119static int 120linsysfs_link_scsi_host(PFS_FILL_ARGS) 121{ 122 struct scsi_host_queue *scsi_host; 123 int index; 124 125 if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { 126 index = atoi(&pn->pn_parent->pn_name[4]); 127 } else { 128 sbuf_printf(sb, "unknown\n"); 129 return (0); 130 } 131 TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { 132 if (index-- == 0) { 133 sbuf_printf(sb, "../../../devices%s", scsi_host->path); 134 return(0); 135 } 136 } 137 sbuf_printf(sb, "unknown\n"); 138 return (0); 139} 140 141#define PCI_DEV "pci" 142static int 143linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, char *path, 144 char *prefix) 145{ 146 struct scsi_host_queue *scsi_host; 147 struct pfs_node *sub_dir; 148 int i, nchildren; 149 device_t *children, parent; 150 devclass_t devclass; 151 const char *name = NULL; 152 struct pci_devinfo *dinfo; 153 char *device, *host, *new_path = path; 154 155 parent = device_get_parent(dev); 156 if (parent) { 157 devclass = device_get_devclass(parent); 158 if (devclass != NULL) 159 name = devclass_get_name(devclass); 160 if (name && strcmp(name, PCI_DEV) == 0) { 161 dinfo = device_get_ivars(dev); 162 if (dinfo) { 163 device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 164 new_path = malloc(MAXPATHLEN, M_TEMP, 165 M_WAITOK); 166 new_path[0] = '\000'; 167 strcpy(new_path, path); 168 host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 169 device[0] = '\000'; 170 sprintf(device, "%s:%02x:%02x.%x", 171 prefix, 172 dinfo->cfg.bus, 173 dinfo->cfg.slot, 174 dinfo->cfg.func); 175 strcat(new_path, "/"); 176 strcat(new_path, device); 177 dir = pfs_create_dir(dir, device, 178 NULL, NULL, NULL, 0); 179 180 if (dinfo->cfg.baseclass == PCIC_STORAGE) { 181 /* DJA only make this if needed */ 182 sprintf(host, "host%d", host_number++); 183 strcat(new_path, "/"); 184 strcat(new_path, host); 185 pfs_create_dir(dir, host, 186 NULL, NULL, NULL, 0); 187 scsi_host = malloc(sizeof( 188 struct scsi_host_queue), 189 M_DEVBUF, M_NOWAIT); 190 scsi_host->path = malloc( 191 strlen(new_path) + 1, 192 M_DEVBUF, M_NOWAIT); 193 scsi_host->path[0] = '\000'; 194 bcopy(new_path, scsi_host->path, 195 strlen(new_path) + 1); 196 scsi_host->name = "unknown"; 197 198 sub_dir = pfs_create_dir(scsi, host, 199 NULL, NULL, NULL, 0); 200 pfs_create_link(sub_dir, "device", 201 &linsysfs_link_scsi_host, 202 NULL, NULL, NULL, 0); 203 pfs_create_file(sub_dir, "proc_name", 204 &linsysfs_scsiname, 205 NULL, NULL, NULL, PFS_RD); 206 scsi_host->name 207 = linux_driver_get_name_dev(dev); 208 TAILQ_INSERT_TAIL(&scsi_host_q, 209 scsi_host, scsi_host_next); 210 } 211 free(device, M_TEMP); 212 free(host, M_TEMP); 213 } 214 } 215 } 216 217 device_get_children(dev, &children, &nchildren); 218 for (i = 0; i < nchildren; i++) { 219 if (children[i]) 220 linsysfs_run_bus(children[i], dir, scsi, new_path, prefix); 221 } 222 if (new_path != path) 223 free(new_path, M_TEMP); 224 225 return (1); 226} 227 228/* 229 * Constructor 230 */ 231static int 232linsysfs_init(PFS_INIT_ARGS) 233{ 234 struct pfs_node *root; 235 struct pfs_node *dir; 236 struct pfs_node *pci; 237 struct pfs_node *scsi; 238 devclass_t devclass; 239 device_t dev; 240 241 TAILQ_INIT(&scsi_host_q); 242 243 root = pi->pi_root; 244 245 /* /sys/class/... */ 246 scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0); 247 scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0); 248 249 /* /sys/device */ 250 dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0); 251 252 /* /sys/device/pci0000:00 */ 253 pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0); 254 255 devclass = devclass_find("root"); 256 if (devclass == NULL) { 257 return (0); 258 } 259 260 dev = devclass_get_device(devclass, 0); 261 linsysfs_run_bus(dev, pci, scsi, "/pci0000:00", "0000"); 262 return (0); 263} 264 265/* 266 * Destructor 267 */ 268static int 269linsysfs_uninit(PFS_INIT_ARGS) 270{ 271 struct scsi_host_queue *scsi_host, *scsi_host_tmp; 272 273 TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next, 274 scsi_host_tmp) { 275 TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next); 276 free(scsi_host->path, M_TEMP); 277 free(scsi_host, M_TEMP); 278 } 279 280 return (0); 281} 282 283PSEUDOFS(linsysfs, 1, 0); 284MODULE_DEPEND(linsysfs, linux, 1, 1, 1); 285