linsysfs.c revision 293527
11556Srgrimes/*- 21556Srgrimes * Copyright (c) 2006 IronPort Systems 31556Srgrimes * All rights reserved. 41556Srgrimes * 51556Srgrimes * Redistribution and use in source and binary forms, with or without 61556Srgrimes * modification, are permitted provided that the following conditions 71556Srgrimes * are met: 81556Srgrimes * 1. Redistributions of source code must retain the above copyright 91556Srgrimes * notice, this list of conditions and the following disclaimer. 101556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111556Srgrimes * notice, this list of conditions and the following disclaimer in the 121556Srgrimes * documentation and/or other materials provided with the distribution. 131556Srgrimes * 141556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 151556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 161556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 171556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 181556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 191556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 201556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 211556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 221556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 231556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 241556Srgrimes * SUCH DAMAGE. 251556Srgrimes */ 261556Srgrimes 271556Srgrimes#include <sys/cdefs.h> 281556Srgrimes__FBSDID("$FreeBSD: stable/10/sys/compat/linsysfs/linsysfs.c 293527 2016-01-09 16:08:22Z dchagin $"); 291556Srgrimes 3090143Smarkm#include <sys/param.h> 311556Srgrimes#include <sys/queue.h> 3228052Ssteve#include <sys/blist.h> 3390143Smarkm#include <sys/conf.h> 3428052Ssteve#include <sys/exec.h> 3599110Sobrien#include <sys/filedesc.h> 3699110Sobrien#include <sys/kernel.h> 371556Srgrimes#include <sys/linker.h> 381556Srgrimes#include <sys/malloc.h> 391556Srgrimes#include <sys/mount.h> 401556Srgrimes#include <sys/mutex.h> 411556Srgrimes#include <sys/proc.h> 4228054Ssteve#include <sys/resourcevar.h> 4328054Ssteve#include <sys/sbuf.h> 441556Srgrimes#include <sys/smp.h> 451556Srgrimes#include <sys/socket.h> 461556Srgrimes#include <sys/vnode.h> 471556Srgrimes#include <sys/bus.h> 481556Srgrimes#include <sys/pciio.h> 491556Srgrimes 501556Srgrimes#include <dev/pci/pcivar.h> 511556Srgrimes#include <dev/pci/pcireg.h> 521556Srgrimes 53109504Sjmallett#include <net/if.h> 5490110Simp 551556Srgrimes#include <vm/vm.h> 561556Srgrimes#include <vm/pmap.h> 5769896Smckusick#include <vm/vm_map.h> 581556Srgrimes#include <vm/vm_param.h> 591556Srgrimes#include <vm/vm_object.h> 60130827Sgad#include <vm/swap_pager.h> 61130827Sgad 621556Srgrimes#include <machine/bus.h> 631556Srgrimes 641556Srgrimes#include <compat/linux/linux_ioctl.h> 65110411Ssobomax#include <compat/linux/linux_mib.h> 6690143Smarkm#include <compat/linux/linux_util.h> 67225868Strasz#include <fs/pseudofs/pseudofs.h> 68225868Strasz 69225868Straszstruct scsi_host_queue { 70225868Strasz TAILQ_ENTRY(scsi_host_queue) scsi_host_next; 71225868Strasz char *path; 7297958Sjmallett char *name; 73225868Strasz}; 74225868Strasz 75225868StraszTAILQ_HEAD(,scsi_host_queue) scsi_host_q; 76225868Strasz 77225868Straszstatic int host_number = 0; 7897850Sjmallett 79235851Skibstatic int 80225868Straszatoi(const char *str) 81225868Strasz{ 82240645Szont return (int)strtol(str, (char **)NULL, 10); 83225868Strasz} 84225868Strasz 85225868Strasz/* 86225868Strasz * Filler function for proc_name 87225868Strasz */ 88225868Straszstatic int 89225868Straszlinsysfs_scsiname(PFS_FILL_ARGS) 90267904Spluknet{ 91254943Swill struct scsi_host_queue *scsi_host; 92225868Strasz int index; 93267904Spluknet 94225868Strasz if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { 95225868Strasz index = atoi(&pn->pn_parent->pn_name[4]); 96225868Strasz } else { 97225868Strasz sbuf_printf(sb, "unknown\n"); 98225868Strasz return (0); 99331471Sjhb } 100225868Strasz TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { 101225868Strasz if (index-- == 0) { 102225868Strasz sbuf_printf(sb, "%s\n", scsi_host->name); 103225868Strasz return (0); 104225868Strasz } 105225868Strasz } 106225868Strasz sbuf_printf(sb, "unknown\n"); 107225868Strasz return (0); 108225868Strasz} 109225868Strasz 110225868Strasz/* 111225868Strasz * Filler function for device sym-link 112225868Strasz */ 113225868Straszstatic int 114225868Straszlinsysfs_link_scsi_host(PFS_FILL_ARGS) 115225868Strasz{ 116225868Strasz struct scsi_host_queue *scsi_host; 117225868Strasz int index; 118225868Strasz 119225868Strasz if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { 120225868Strasz index = atoi(&pn->pn_parent->pn_name[4]); 121225868Strasz } else { 122225868Strasz sbuf_printf(sb, "unknown\n"); 123225868Strasz return (0); 124225868Strasz } 125225868Strasz TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { 126225868Strasz if (index-- == 0) { 127225868Strasz sbuf_printf(sb, "../../../devices%s", scsi_host->path); 128225868Strasz return(0); 129225868Strasz } 130225868Strasz } 131225868Strasz sbuf_printf(sb, "unknown\n"); 132225868Strasz return (0); 133225868Strasz} 134225868Strasz 135225868Strasz#define PCI_DEV "pci" 136225868Straszstatic int 137225868Straszlinsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, char *path, 138225868Strasz char *prefix) 139225868Strasz{ 140225868Strasz struct scsi_host_queue *scsi_host; 141225868Strasz struct pfs_node *sub_dir; 142225868Strasz int i, nchildren; 143225868Strasz device_t *children, parent; 144225868Strasz devclass_t devclass; 145225868Strasz const char *name = NULL; 14690143Smarkm struct pci_devinfo *dinfo; 147225868Strasz char *device, *host, *new_path = path; 148225868Strasz 149240645Szont parent = device_get_parent(dev); 150225868Strasz if (parent) { 151225868Strasz devclass = device_get_devclass(parent); 152225868Strasz if (devclass != NULL) 153225868Strasz name = devclass_get_name(devclass); 154225868Strasz if (name && strcmp(name, PCI_DEV) == 0) { 155225868Strasz dinfo = device_get_ivars(dev); 156225868Strasz if (dinfo) { 157225868Strasz device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 158225868Strasz new_path = malloc(MAXPATHLEN, M_TEMP, 159225868Strasz M_WAITOK); 160225868Strasz new_path[0] = '\000'; 161225868Strasz strcpy(new_path, path); 162225868Strasz host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 163225868Strasz device[0] = '\000'; 164225868Strasz sprintf(device, "%s:%02x:%02x.%x", 165225868Strasz prefix, 166225868Strasz dinfo->cfg.bus, 167225868Strasz dinfo->cfg.slot, 168225868Strasz dinfo->cfg.func); 169225868Strasz strcat(new_path, "/"); 170225868Strasz strcat(new_path, device); 171225868Strasz dir = pfs_create_dir(dir, device, 172225868Strasz NULL, NULL, NULL, 0); 173225868Strasz 174225868Strasz if (dinfo->cfg.baseclass == PCIC_STORAGE) { 175225868Strasz /* DJA only make this if needed */ 176225868Strasz sprintf(host, "host%d", host_number++); 1771556Srgrimes strcat(new_path, "/"); 1781556Srgrimes strcat(new_path, host); 1791556Srgrimes pfs_create_dir(dir, host, 18090110Simp NULL, NULL, NULL, 0); 1811556Srgrimes scsi_host = malloc(sizeof( 1821556Srgrimes struct scsi_host_queue), 1831556Srgrimes M_DEVBUF, M_NOWAIT); 18490143Smarkm scsi_host->path = malloc( 1851556Srgrimes strlen(new_path) + 1, 1861556Srgrimes M_DEVBUF, M_NOWAIT); 1871556Srgrimes scsi_host->path[0] = '\000'; 1881556Srgrimes bcopy(new_path, scsi_host->path, 1891556Srgrimes strlen(new_path) + 1); 1901556Srgrimes scsi_host->name = "unknown"; 1911556Srgrimes 1921556Srgrimes sub_dir = pfs_create_dir(scsi, host, 1931556Srgrimes NULL, NULL, NULL, 0); 1941556Srgrimes pfs_create_link(sub_dir, "device", 1951556Srgrimes &linsysfs_link_scsi_host, 1961556Srgrimes NULL, NULL, NULL, 0); 1971556Srgrimes pfs_create_file(sub_dir, "proc_name", 1981556Srgrimes &linsysfs_scsiname, 1991556Srgrimes NULL, NULL, NULL, PFS_RD); 2001556Srgrimes scsi_host->name 201109502Sjmallett = linux_driver_get_name_dev(dev); 2021556Srgrimes TAILQ_INSERT_TAIL(&scsi_host_q, 20390143Smarkm scsi_host, scsi_host_next); 2041556Srgrimes } 20598050Sjmallett free(device, M_TEMP); 20690143Smarkm free(host, M_TEMP); 20790143Smarkm } 208109504Sjmallett } 2091556Srgrimes } 2101556Srgrimes 2111556Srgrimes device_get_children(dev, &children, &nchildren); 21297944Sjmallett for (i = 0; i < nchildren; i++) { 21398050Sjmallett if (children[i]) 21498050Sjmallett linsysfs_run_bus(children[i], dir, scsi, new_path, prefix); 21598050Sjmallett } 21697944Sjmallett if (new_path != path) 21798050Sjmallett free(new_path, M_TEMP); 21898050Sjmallett 21998050Sjmallett return (1); 22098050Sjmallett} 22198050Sjmallett 22298050Sjmallett/* 22398050Sjmallett * Constructor 22498050Sjmallett */ 225109504Sjmallettstatic int 2261556Srgrimeslinsysfs_init(PFS_INIT_ARGS) 227109502Sjmallett{ 228109502Sjmallett struct pfs_node *root; 229109502Sjmallett struct pfs_node *dir; 230109502Sjmallett struct pfs_node *pci; 231109502Sjmallett struct pfs_node *scsi; 232109502Sjmallett devclass_t devclass; 233109502Sjmallett device_t dev; 234109502Sjmallett 235109502Sjmallett TAILQ_INIT(&scsi_host_q); 236109502Sjmallett 2371556Srgrimes root = pi->pi_root; 23897877Sjmallett 239109504Sjmallett /* /sys/class/... */ 240109504Sjmallett scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0); 241109504Sjmallett scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0); 242109504Sjmallett 243109504Sjmallett /* /sys/device */ 244109504Sjmallett dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0); 24597848Sjmallett 24697848Sjmallett /* /sys/device/pci0000:00 */ 24797877Sjmallett pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0); 24897848Sjmallett 249130999Sgad devclass = devclass_find("root"); 2501556Srgrimes if (devclass == NULL) { 25190143Smarkm return (0); 252130999Sgad } 253104026Sjmallett 254104026Sjmallett dev = devclass_get_device(devclass, 0); 255104026Sjmallett linsysfs_run_bus(dev, pci, scsi, "/pci0000:00", "0000"); 256104026Sjmallett return (0); 2571556Srgrimes} 2581556Srgrimes 2591556Srgrimes/* 260109504Sjmallett * Destructor 2611556Srgrimes */ 262156423Sgadstatic int 2631556Srgrimeslinsysfs_uninit(PFS_INIT_ARGS) 264156423Sgad{ 2651556Srgrimes struct scsi_host_queue *scsi_host, *scsi_host_tmp; 2661556Srgrimes 2671556Srgrimes TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next, 2681556Srgrimes scsi_host_tmp) { 2691556Srgrimes TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next); 2701556Srgrimes free(scsi_host->path, M_TEMP); 2711556Srgrimes free(scsi_host, M_TEMP); 2721556Srgrimes } 2731556Srgrimes 274156423Sgad return (0); 275157559Sgad} 276157559Sgad 277157559SgadPSEUDOFS(linsysfs, 1, 0); 278157559Sgad#if defined(__amd64__) 279156423SgadMODULE_DEPEND(linsysfs, linux_common, 1, 1, 1); 280157559Sgad#else 281157559SgadMODULE_DEPEND(linsysfs, linux, 1, 1, 1); 282157559Sgad#endif 283157559Sgad