285 lines
7.1 KiB
C
285 lines
7.1 KiB
C
/*-
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* Copyright (c) 2006 IronPort Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/blist.h>
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#include <sys/conf.h>
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#include <sys/exec.h>
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#include <sys/filedesc.h>
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#include <sys/kernel.h>
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#include <sys/linker.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/resourcevar.h>
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#include <sys/sbuf.h>
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#include <sys/smp.h>
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#include <sys/socket.h>
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#include <sys/vnode.h>
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#include <sys/bus.h>
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#include <sys/pciio.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <net/if.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_map.h>
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#include <vm/vm_param.h>
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#include <vm/vm_object.h>
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#include <vm/swap_pager.h>
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#include <machine/bus.h>
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#include "opt_compat.h"
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#ifdef COMPAT_LINUX32 /* XXX */
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#include <machine/../linux32/linux.h>
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#else
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#include <machine/../linux/linux.h>
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#endif
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#include <compat/linux/linux_ioctl.h>
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#include <compat/linux/linux_mib.h>
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#include <compat/linux/linux_util.h>
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#include <fs/pseudofs/pseudofs.h>
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struct scsi_host_queue {
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TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
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char *path;
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char *name;
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};
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TAILQ_HEAD(,scsi_host_queue) scsi_host_q;
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static int host_number = 0;
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static int
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atoi(const char *str)
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{
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return (int)strtol(str, (char **)NULL, 10);
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}
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/*
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* Filler function for proc_name
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*/
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static int
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linsysfs_scsiname(PFS_FILL_ARGS)
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{
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struct scsi_host_queue *scsi_host;
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int index;
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if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
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index = atoi(&pn->pn_parent->pn_name[4]);
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} else {
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
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if (index-- == 0) {
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sbuf_printf(sb, "%s\n", scsi_host->name);
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return (0);
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}
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}
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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/*
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* Filler function for device sym-link
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*/
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static int
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linsysfs_link_scsi_host(PFS_FILL_ARGS)
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{
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struct scsi_host_queue *scsi_host;
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int index;
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if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
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index = atoi(&pn->pn_parent->pn_name[4]);
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} else {
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
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if (index-- == 0) {
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sbuf_printf(sb, "../../../devices%s", scsi_host->path);
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return(0);
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}
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}
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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#define PCI_DEV "pci"
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static int
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linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, char *path,
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char *prefix)
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{
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struct scsi_host_queue *scsi_host;
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struct pfs_node *sub_dir;
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int i, nchildren;
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device_t *children, parent;
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devclass_t devclass;
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const char *name = NULL;
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struct pci_devinfo *dinfo;
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char *device, *host, *new_path = path;
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parent = device_get_parent(dev);
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if (parent) {
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devclass = device_get_devclass(parent);
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if (devclass != NULL)
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name = devclass_get_name(devclass);
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if (name && strcmp(name, PCI_DEV) == 0) {
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dinfo = device_get_ivars(dev);
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if (dinfo) {
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device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
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new_path = malloc(MAXPATHLEN, M_TEMP,
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M_WAITOK);
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new_path[0] = '\000';
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strcpy(new_path, path);
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host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
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device[0] = '\000';
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sprintf(device, "%s:%02x:%02x.%x",
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prefix,
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dinfo->cfg.bus,
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dinfo->cfg.slot,
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dinfo->cfg.func);
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strcat(new_path, "/");
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strcat(new_path, device);
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dir = pfs_create_dir(dir, device,
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NULL, NULL, NULL, 0);
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if (dinfo->cfg.baseclass == PCIC_STORAGE) {
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/* DJA only make this if needed */
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sprintf(host, "host%d", host_number++);
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strcat(new_path, "/");
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strcat(new_path, host);
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pfs_create_dir(dir, host,
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NULL, NULL, NULL, 0);
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scsi_host = malloc(sizeof(
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struct scsi_host_queue),
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M_DEVBUF, M_NOWAIT);
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scsi_host->path = malloc(
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strlen(new_path) + 1,
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M_DEVBUF, M_NOWAIT);
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scsi_host->path[0] = '\000';
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bcopy(new_path, scsi_host->path,
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strlen(new_path) + 1);
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scsi_host->name = "unknown";
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sub_dir = pfs_create_dir(scsi, host,
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NULL, NULL, NULL, 0);
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pfs_create_link(sub_dir, "device",
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&linsysfs_link_scsi_host,
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NULL, NULL, NULL, 0);
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pfs_create_file(sub_dir, "proc_name",
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&linsysfs_scsiname,
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NULL, NULL, NULL, PFS_RD);
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scsi_host->name
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= linux_driver_get_name_dev(dev);
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TAILQ_INSERT_TAIL(&scsi_host_q,
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scsi_host, scsi_host_next);
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}
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free(device, M_TEMP);
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free(host, M_TEMP);
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}
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}
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}
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device_get_children(dev, &children, &nchildren);
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for (i = 0; i < nchildren; i++) {
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if (children[i])
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linsysfs_run_bus(children[i], dir, scsi, new_path, prefix);
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}
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if (new_path != path)
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free(new_path, M_TEMP);
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return (1);
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}
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/*
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* Constructor
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*/
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static int
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linsysfs_init(PFS_INIT_ARGS)
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{
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struct pfs_node *root;
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struct pfs_node *dir;
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struct pfs_node *pci;
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struct pfs_node *scsi;
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devclass_t devclass;
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device_t dev;
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TAILQ_INIT(&scsi_host_q);
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root = pi->pi_root;
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/* /sys/class/... */
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scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0);
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scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0);
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/* /sys/device */
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dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0);
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/* /sys/device/pci0000:00 */
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pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0);
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devclass = devclass_find("root");
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if (devclass == NULL) {
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return (0);
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}
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dev = devclass_get_device(devclass, 0);
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linsysfs_run_bus(dev, pci, scsi, "/pci0000:00", "0000");
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return (0);
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}
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/*
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* Destructor
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*/
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static int
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linsysfs_uninit(PFS_INIT_ARGS)
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{
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struct scsi_host_queue *scsi_host, *scsi_host_tmp;
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TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next,
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scsi_host_tmp) {
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TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next);
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free(scsi_host->path, M_TEMP);
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free(scsi_host, M_TEMP);
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}
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return (0);
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}
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PSEUDOFS(linsysfs, 1);
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MODULE_DEPEND(linsysfs, linux, 1, 1, 1);
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