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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     26 
     27 #include <strings.h>
     28 #include <devid.h>
     29 #include <pthread.h>
     30 #include <inttypes.h>
     31 #include <sys/dkio.h>
     32 #include <sys/scsi/scsi_types.h>
     33 #include <fm/topo_mod.h>
     34 #include <fm/topo_list.h>
     35 #include <fm/libdiskstatus.h>
     36 #include <sys/fm/protocol.h>
     37 #include "disk.h"
     38 
     39 static int disk_enum(topo_mod_t *, tnode_t *, const char *,
     40 	topo_instance_t, topo_instance_t, void *, void *);
     41 
     42 static const topo_modops_t disk_ops =
     43 	{ disk_enum, NULL };
     44 
     45 static const topo_modinfo_t disk_info =
     46 	{DISK, FM_FMRI_SCHEME_HC, DISK_VERSION, &disk_ops};
     47 
     48 /*ARGSUSED*/
     49 static int
     50 disk_enum(topo_mod_t *mod, tnode_t *baynode,
     51     const char *name, topo_instance_t min, topo_instance_t max,
     52     void *arg, void *notused)
     53 {
     54 	char		*device;
     55 	int		err;
     56 	nvlist_t	*fmri;
     57 	topo_list_t	*dlistp = topo_mod_getspecific(mod);
     58 
     59 	if (strcmp(name, DISK) != 0) {
     60 		topo_mod_dprintf(mod, "disk_enum: "
     61 		    "only know how to enumerate %s components.\n", DISK);
     62 		return (-1);
     63 	}
     64 
     65 	/* set the parent fru */
     66 	if (topo_node_resource(baynode, &fmri, &err) != 0) {
     67 		topo_mod_dprintf(mod, "disk_enum: "
     68 		    "topo_node_resource error %s\n", topo_strerror(err));
     69 		return (-1);
     70 	}
     71 	if (topo_node_fru_set(baynode, fmri, 0, &err) != 0) {
     72 		topo_mod_dprintf(mod, "disk_enum: "
     73 		    "topo_node_fru error %s\n", topo_strerror(err));
     74 		nvlist_free(fmri);
     75 		return (-1);
     76 	}
     77 	nvlist_free(fmri);
     78 
     79 	/*
     80 	 * For internal storage, get the path to the occupant from the
     81 	 * binding group of the bay node
     82 	 */
     83 	if (topo_prop_get_string(baynode, TOPO_PGROUP_BINDING,
     84 	    TOPO_BINDING_OCCUPANT, &device, &err) != 0) {
     85 		topo_mod_dprintf(mod, "disk_enum: "
     86 		    "binding error %s\n", topo_strerror(err));
     87 		return (-1);
     88 	}
     89 
     90 
     91 	/* locate and topo enumerate the disk with that path */
     92 	err = disk_declare_path(mod, baynode, dlistp, device);
     93 
     94 	topo_mod_strfree(mod, device);
     95 	return (err);
     96 }
     97 
     98 /*ARGSUSED*/
     99 int
    100 _topo_init(topo_mod_t *mod, topo_version_t version)
    101 {
    102 	topo_list_t *dlistp;
    103 
    104 	/*
    105 	 * Turn on module debugging output
    106 	 */
    107 	if (getenv("TOPODISKDEBUG") != NULL)
    108 		topo_mod_setdebug(mod);
    109 	topo_mod_dprintf(mod, "_topo_init: "
    110 	    "initializing %s enumerator\n", DISK);
    111 
    112 	if (topo_mod_register(mod, &disk_info, TOPO_VERSION) != 0) {
    113 		topo_mod_dprintf(mod, "_topo_init: "
    114 		    "%s registration failed: %s\n", DISK, topo_mod_errmsg(mod));
    115 		return (-1);		/* mod errno already set */
    116 	}
    117 
    118 	if ((dlistp = topo_mod_zalloc(mod, sizeof (topo_list_t))) == NULL) {
    119 		topo_mod_dprintf(mod, "_topo_inti: failed to allocate "
    120 		    "disk list");
    121 		return (-1);
    122 	}
    123 
    124 	if (disk_list_gather(mod, dlistp) != 0) {
    125 		topo_mod_unregister(mod);
    126 		topo_mod_free(mod, dlistp, sizeof (topo_list_t));
    127 		topo_mod_dprintf(mod, "_topo_init: "
    128 		    "failed to locate disks");
    129 		return (-1);
    130 	}
    131 
    132 	topo_mod_dprintf(mod, "_topo_init: "
    133 	    "%s enumerator initialized\n", DISK);
    134 
    135 	topo_mod_setspecific(mod, dlistp);
    136 
    137 	return (0);
    138 }
    139 
    140 void
    141 _topo_fini(topo_mod_t *mod)
    142 {
    143 	topo_list_t *dlistp = topo_mod_getspecific(mod);
    144 	disk_list_free(mod, dlistp);
    145 	topo_mod_free(mod, dlistp, sizeof (topo_list_t));
    146 	topo_mod_unregister(mod);
    147 	topo_mod_dprintf(mod, "_topo_fini: "
    148 	    "%s enumerator uninitialized\n", DISK);
    149 }
    150