devfsadm/sparc/misc_link_sparc.c

	misc_link_sparc.c revision 45916cd2fec6e79bca5dee0421bd39e3c2910d1e
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <regex.h>
#include <devfsadm.h>
#include <stdio.h>
#include <strings.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/mkdev.h>
#include <bsm/devalloc.h>

extern int system_labeled;

static int node_name(di_minor_t minor, di_node_t node);


static int ddi_other(di_minor_t minor, di_node_t node);
static int diskette(di_minor_t minor, di_node_t node);
static int ecpp_create(di_minor_t minor, di_node_t node);
static int mc_node(di_minor_t minor, di_node_t node);
static int ddi_cardreader(di_minor_t minor, di_node_t node);
static int starcat_sbbc_node(di_minor_t minor, di_node_t node);
static int wrsm(di_minor_t minor, di_node_t node);
static int lom(di_minor_t minor, di_node_t node);
static int ntwdt_create(di_minor_t minor, di_node_t node);

static devfsadm_create_t misc_cbt[] = {
    { "other", "ddi_other", NULL,
        TYPE_EXACT, ILEVEL_0, ddi_other
    },
    { "memory-controller", "ddi_mem_ctrl", NULL,
        TYPE_EXACT, ILEVEL_0, mc_node
    },
    { "pseudo", "ddi_pseudo", "sbbc",
        TYPE_EXACT | DRV_EXACT, ILEVEL_1, starcat_sbbc_node
    },
    { "disk",  "ddi_block:diskette", NULL,
        TYPE_EXACT, ILEVEL_1, diskette
    },
    { "printer",  "ddi_printer", NULL,
        TYPE_EXACT, ILEVEL_1, ecpp_create
    },
    { "card-reader", "ddi_smartcard_reader", NULL,
        TYPE_EXACT, ILEVEL_0, ddi_cardreader
    },
    { "pseudo", "(^ddi_pseudo$)|(^ddi_ctl:devctl$)", "wrsm",
        TYPE_RE | DRV_EXACT, ILEVEL_0, wrsm,
    },
    { "network", "ddi_net", "wrsmd",
        TYPE_EXACT | DRV_EXACT, ILEVEL_0, node_name,
    },
    { "pseudo", "ddi_pseudo", "lw8",
        TYPE_EXACT | DRV_EXACT, ILEVEL_0, lom
    },
    { "pseudo", "ddi_pseudo", "ntwdt",
        TYPE_EXACT | DRV_EXACT, ILEVEL_0, ntwdt_create
    },
};

DEVFSADM_CREATE_INIT_V0(misc_cbt);

/* Smart Card Reader device link */
#define CARDREADER_LINK     "^scmi2c[0-9]+$"

/* Rules for removing links */
static devfsadm_remove_t sparc_remove_cbt[] = {
    { "card-reader", CARDREADER_LINK, RM_PRE | RM_ALWAYS,
        ILEVEL_0, devfsadm_rm_all }
};

DEVFSADM_REMOVE_INIT_V0(sparc_remove_cbt);


/*
 * Handles minor node type "ddi_other"
 * type=ddi_other;name=SUNW,pmc    pmc
 * type=ddi_other;name=SUNW,mic    mic\M0
 */
static int
ddi_other(di_minor_t minor, di_node_t node)
{
    char path[PATH_MAX + 1];
    char *nn = di_node_name(node);
    char *mn = di_minor_name(minor);

    if (strcmp(nn, "SUNW,pmc") == 0) {
        (void) devfsadm_mklink("pcm", node, minor, 0);
    } else if (strcmp(nn, "SUNW,mic") == 0) {
        (void) strcpy(path, "mic");
        (void) strcat(path, mn);
        (void) devfsadm_mklink(path, node, minor, 0);
    }

    return (DEVFSADM_CONTINUE);
}

/*
 * This function is called for diskette nodes
 */
static int
diskette(di_minor_t minor, di_node_t node)
{
    int flags = 0;
    char    *mn = di_minor_name(minor);

    if (system_labeled)
        flags = DA_ADD|DA_FLOPPY;

    if (strcmp(mn, "c") == 0) {
        (void) devfsadm_mklink("diskette", node, minor, flags);
        (void) devfsadm_mklink("diskette0", node, minor, flags);

    } else if (strcmp(mn, "c,raw") == 0) {
        (void) devfsadm_mklink("rdiskette", node, minor, flags);
        (void) devfsadm_mklink("rdiskette0", node, minor, flags);

    }
    return (DEVFSADM_CONTINUE);
}

/*
 * Handles links of the form:
 * type=ddi_pseudo;name=xyz  \D
 */
static int
node_name(di_minor_t minor, di_node_t node)
{
    (void) devfsadm_mklink(di_node_name(node), node, minor, 0);
    return (DEVFSADM_CONTINUE);
}

/*
 * Handles links of the form:
 * type=ddi_printer;name=ecpp  ecpp\N0
 */
static int
ecpp_create(di_minor_t minor, di_node_t node)
{
    char *buf;
    char path[PATH_MAX + 1];
    devfsadm_enumerate_t rules[1] = {"^ecpp([0-9]+)$", 1, MATCH_ALL};

    if (strcmp(di_driver_name(node), "ecpp") != 0) {
        return (DEVFSADM_CONTINUE);
    }

    if ((buf = di_devfs_path(node)) == NULL) {
        return (DEVFSADM_CONTINUE);
    }

    (void) snprintf(path, sizeof (path), "%s:%s",
        buf, di_minor_name(minor));

    di_devfs_path_free(buf);

    if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
        return (DEVFSADM_CONTINUE);
    }

    (void) snprintf(path, sizeof (path), "ecpp%s", buf);
    free(buf);

    (void) devfsadm_mklink(path, node, minor, 0);
    return (DEVFSADM_CONTINUE);
}

/* Rules for memory controller */
static devfsadm_enumerate_t mc_rules[1] =
    {"^mc$/^mc([0-9]+)$", 1, MATCH_ALL};


static int
mc_node(di_minor_t minor, di_node_t node)
{
    char path[PATH_MAX], l_path[PATH_MAX], *buf, *devfspath;
    char *minor_nm;

    minor_nm = di_minor_name(minor);

    if (minor_nm == NULL) {
        return (DEVFSADM_CONTINUE);
    }

    devfspath = di_devfs_path(node);

    (void) strcpy(path, devfspath);
    (void) strcat(path, ":");
    (void) strcat(path, minor_nm);
    di_devfs_path_free(devfspath);

    /* build the physical path from the components */
    if (devfsadm_enumerate_int(path, 0, &buf, mc_rules, 1)) {
        return (DEVFSADM_CONTINUE);
    }

    (void) strcpy(l_path, "mc/mc");
    (void) strcat(l_path, buf);

    free(buf);

    (void) devfsadm_mklink(l_path, node, minor, 0);
    return (DEVFSADM_CONTINUE);
}


/*
 * This function is called for Smartcard card reader nodes
 * Handles minor node type "ddi_smartcard_reader"
 * type=ddi_smartcard_reader;name=card-reader   scmi2c\N0
 * Calls enumerate to assign logical card-reader id and then
 * devfsadm_mklink to make the link.
 */
static int
ddi_cardreader(di_minor_t minor, di_node_t node)
{
    char p_path[PATH_MAX +1], l_path[PATH_MAX +1];
    char *buf;
    char *ptr;
    char *nn, *mn;

    devfsadm_enumerate_t rules[1] = {"^scmi2c([0-9]+)$", 1, MATCH_ALL};

    nn = di_node_name(node);
    if (strcmp(nn, "card-reader")) {
        return (DEVFSADM_CONTINUE);
    }

    if (NULL == (ptr = di_devfs_path(node))) {
        return (DEVFSADM_CONTINUE);
    }

    (void) strcpy(p_path, ptr);
    (void) strcat(p_path, ":");

    mn = di_minor_name(minor);

    (void) strcat(p_path, mn);
    di_devfs_path_free(ptr);

    if (devfsadm_enumerate_int(p_path, 0, &buf, rules, 1)) {
        return (DEVFSADM_CONTINUE);
    }
    (void) snprintf(l_path, sizeof (l_path), "scmi2c%s", buf);
    free(buf);
    (void) devfsadm_mklink(l_path, node, minor, 0);

    return (DEVFSADM_CONTINUE);
}


/*
 * Starcat sbbc node.  We only really care about generating a /dev
 * link for the lone sbbc on the SC (as opposed to the potentially
 * numerous sbbcs on the domain), so only operate on instance 0.
 */
static int
starcat_sbbc_node(di_minor_t minor, di_node_t node)
{
    char *mn;

    if (di_instance(node) == 0) {
        mn = di_minor_name(minor);
        (void) devfsadm_mklink(mn, node, minor, 0);
    }
    return (DEVFSADM_CONTINUE);

}

int
wrsm(di_minor_t minor, di_node_t node)
{
    const char *node_name = di_node_name(node);
    const char *minor_name = di_minor_name(minor);
    char path[PATH_MAX + 1];

    if (minor_name == NULL || node_name == NULL) {
        return (DEVFSADM_CONTINUE);
    }
    if (strcmp(minor_name, "admin") == 0) {
        /* admin pseudo device */
        (void) snprintf(path, sizeof (path), "%s%s", node_name,
            minor_name);
    } else if (strcmp(minor_name, "ctrl") == 0) {
        /* controller pseudo device */
        dev_t dev = di_minor_devt(minor);
        minor_t dev_minor = minor(dev);
        (void) snprintf(path, sizeof (path), "%s%u", node_name,
            (uint_t)dev_minor);
    } else {
        /*
         * For hardware devices, the devlink must be
         * /dev/<node_name><portid>. devpath is of the format
         * ".../<node_name>@<portid>,0". Need to extract the
         * <portid> for use in bulding devlink.
         */
        char devpath[PATH_MAX + 1];
        char *devfs_path;
        int i;

        devfs_path = di_devfs_path(node);
        if (devfs_path == NULL) {
            return (DEVFSADM_CONTINUE);
        }
        (void) strcpy(devpath, devfs_path);
        di_devfs_path_free(devfs_path);

        for (i = strlen(devpath); devpath[i] != '@' && i > 0; i--) {
            if (devpath[i] == ',') {
                devpath[i] = 0;
            }
        }
        if (i == 0) {
            return (DEVFSADM_CONTINUE);
        }
        (void) snprintf(path, sizeof (path), "wci%s", &devpath[i+1]);
    }
    (void) devfsadm_mklink(path, node, minor, 0);

    return (DEVFSADM_CONTINUE);
}

/*
 * Creates /dev/lom nodes for Platform Specific lom driver
 */
static int
lom(di_minor_t minor, di_node_t node)
{
    (void) devfsadm_mklink("lom", node, minor, 0);
    return (DEVFSADM_CONTINUE);
}

/*
 * Creates /dev/ntwdt nodes for Platform Specific ntwdt driver
 */
static int
ntwdt_create(di_minor_t minor, di_node_t node)
{
    (void) devfsadm_mklink("ntwdt", node, minor, 0);
    return (DEVFSADM_CONTINUE);
}