diff options
Diffstat (limited to 'sys/compat/linsysfs/linsysfs.c')
| -rw-r--r-- | sys/compat/linsysfs/linsysfs.c | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/sys/compat/linsysfs/linsysfs.c b/sys/compat/linsysfs/linsysfs.c new file mode 100644 index 000000000000..ab3886e8c19f --- /dev/null +++ b/sys/compat/linsysfs/linsysfs.c @@ -0,0 +1,285 @@ +/*- + * Copyright (c) 2006 IronPort Systems + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/queue.h> +#include <sys/blist.h> +#include <sys/conf.h> +#include <sys/exec.h> +#include <sys/filedesc.h> +#include <sys/kernel.h> +#include <sys/linker.h> +#include <sys/malloc.h> +#include <sys/mount.h> +#include <sys/mutex.h> +#include <sys/proc.h> +#include <sys/resourcevar.h> +#include <sys/sbuf.h> +#include <sys/smp.h> +#include <sys/socket.h> +#include <sys/vnode.h> +#include <sys/bus.h> +#include <sys/pciio.h> + +#include <dev/pci/pcivar.h> +#include <dev/pci/pcireg.h> + +#include <net/if.h> + +#include <vm/vm.h> +#include <vm/pmap.h> +#include <vm/vm_map.h> +#include <vm/vm_param.h> +#include <vm/vm_object.h> +#include <vm/swap_pager.h> + +#include <machine/bus.h> + +#include "opt_compat.h" +#ifdef COMPAT_LINUX32 /* XXX */ +#include <machine/../linux32/linux.h> +#else +#include <machine/../linux/linux.h> +#endif +#include <compat/linux/linux_ioctl.h> +#include <compat/linux/linux_mib.h> +#include <compat/linux/linux_util.h> +#include <fs/pseudofs/pseudofs.h> +#include <fs/procfs/procfs.h> + +struct scsi_host_queue { + TAILQ_ENTRY(scsi_host_queue) scsi_host_next; + char *path; + char *name; +}; + +TAILQ_HEAD(,scsi_host_queue) scsi_host_q; + +static int host_number = 0; + +static int +atoi(const char *str) +{ + return (int)strtol(str, (char **)NULL, 10); +} + +/* + * Filler function for proc_name + */ +static int +linsysfs_scsiname(PFS_FILL_ARGS) +{ + struct scsi_host_queue *scsi_host; + int index; + + if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { + index = atoi(&pn->pn_parent->pn_name[4]); + } else { + sbuf_printf(sb, "unknown\n"); + return (0); + } + TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { + if (index-- == 0) { + sbuf_printf(sb, "%s\n", scsi_host->name); + return (0); + } + } + sbuf_printf(sb, "unknown\n"); + return (0); +} + +/* + * Filler function for device sym-link + */ +static int +linsysfs_link_scsi_host(PFS_FILL_ARGS) +{ + struct scsi_host_queue *scsi_host; + int index; + + if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { + index = atoi(&pn->pn_parent->pn_name[4]); + } else { + sbuf_printf(sb, "unknown\n"); + return (0); + } + TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { + if (index-- == 0) { + sbuf_printf(sb, "../../../devices%s", scsi_host->path); + return(0); + } + } + sbuf_printf(sb, "unknown\n"); + return (0); +} + +#define PCI_DEV "pci" +static int +linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, char *path, + char *prefix) +{ + struct scsi_host_queue *scsi_host; + struct pfs_node *sub_dir; + int i, nchildren; + device_t *children, parent; + devclass_t devclass; + const char *name = NULL; + struct pci_devinfo *dinfo; + char *device, *host, *new_path = path; + + parent = device_get_parent(dev); + if (parent) { + devclass = device_get_devclass(parent); + if (devclass != NULL) + name = devclass_get_name(devclass); + if (name && strcmp(name, PCI_DEV) == 0) { + dinfo = device_get_ivars(dev); + if (dinfo) { + device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); + new_path = malloc(MAXPATHLEN, M_TEMP, + M_WAITOK); + new_path[0] = '\000'; + strcpy(new_path, path); + host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); + device[0] = '\000'; + sprintf(device, "%s:%02x:%02x.%x", + prefix, + dinfo->cfg.bus, + dinfo->cfg.slot, + dinfo->cfg.func); + strcat(new_path, "/"); + strcat(new_path, device); + dir = pfs_create_dir(dir, device, + NULL, NULL, 0); + + if (dinfo->cfg.baseclass == PCIC_STORAGE) { + /* DJA only make this if needed */ + sprintf(host, "host%d", host_number++); + strcat(new_path, "/"); + strcat(new_path, host); + sub_dir = pfs_create_dir(dir, + host, NULL, NULL, 0); + scsi_host = malloc(sizeof( + struct scsi_host_queue), + M_DEVBUF, M_NOWAIT); + scsi_host->path = malloc( + strlen(new_path) + 1, + M_DEVBUF, M_NOWAIT); + scsi_host->path[0] = '\000'; + bcopy(new_path, scsi_host->path, + strlen(new_path) + 1); + scsi_host->name = "unknown"; + + sub_dir = pfs_create_dir(scsi, host, + NULL, NULL, 0); + pfs_create_link(sub_dir, "device", + &linsysfs_link_scsi_host, + NULL, NULL, 0); + pfs_create_file(sub_dir, "proc_name", + &linsysfs_scsiname, + NULL, NULL, PFS_RD); + scsi_host->name + = linux_driver_get_name_dev(dev); + TAILQ_INSERT_TAIL(&scsi_host_q, + scsi_host, scsi_host_next); + } + free(device, M_TEMP); + free(host, M_TEMP); + } + } + } + + device_get_children(dev, &children, &nchildren); + for (i = 0; i < nchildren; i++) { + if (children[i]) + linsysfs_run_bus(children[i], dir, scsi, new_path, prefix); + } + if (new_path != path) + free(new_path, M_TEMP); + + return (1); +} + +/* + * Constructor + */ +static int +linsysfs_init(PFS_INIT_ARGS) +{ + struct pfs_node *root; + struct pfs_node *dir; + struct pfs_node *pci; + struct pfs_node *scsi; + devclass_t devclass; + device_t dev; + + TAILQ_INIT(&scsi_host_q); + + root = pi->pi_root; + + /* /sys/class/... */ + scsi = pfs_create_dir(root, "class", NULL, NULL, 0); + scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, 0); + + /* /sys/device */ + dir = pfs_create_dir(root, "devices", NULL, NULL, 0); + + /* /sys/device/pci0000:00 */ + pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, 0); + + devclass = devclass_find("root"); + if (devclass == NULL) { + return (0); + } + + dev = devclass_get_device(devclass, 0); + linsysfs_run_bus(dev, pci, scsi, "/pci0000:00", "0000"); + return (0); +} + +/* + * Destructor + */ +static int +linsysfs_uninit(PFS_INIT_ARGS) +{ + struct scsi_host_queue *scsi_host; + + TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { + TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next); + free(scsi_host->path, M_TEMP); + free(scsi_host, M_TEMP); + } + + return (0); +} + +PSEUDOFS(linsysfs, 1); +MODULE_DEPEND(linsysfs, linux, 1, 1, 1); +MODULE_DEPEND(linsysfs, procfs, 1, 1, 1); |