usr/src/uts/common/sys/dacf_impl.h

   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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _DACF_IMPL_H
  28 #define _DACF_IMPL_H
  29
  30 /*
  31  * Implementation-Private definitions for Device autoconfiguration (dacf)
  32  */
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 #include <sys/types.h>
  39 #include <sys/dacf.h>
  40
  41 typedef struct dacf_module {
  42         char *dm_name;                  /* module name */
  43         krwlock_t dm_lock;              /* module lock */
  44         int dm_loaded;                  /* whether dm_opsets is valid */
  45         dacf_opset_t *dm_opsets;        /* null-terminated array of op-sets */
  46 } dacf_module_t;
  47
  48
  49 #define DACF_RULE_HASHSIZE      8
  50 #define DACF_MODULE_HASHSIZE    8
  51 #define DACF_INFO_HASHSIZE      16
  52
  53 /*
  54  * Flags to dacf_process_rsrvs
  55  */
  56 #define DACF_PROC_INVOKE        0x0001
  57 #define DACF_PROC_RELE          0x0002
  58
  59 typedef enum dacf_devspec {
  60         DACF_DS_ERROR = -1,             /* error state */
  61         DACF_DS_MIN_NT = 1,             /* match minor node-type */
  62         DACF_DS_DRV_MNAME = 2,          /* match driver minor name */
  63         DACF_DS_DEV_PATH = 3            /* match device path */
  64 } dacf_devspec_t;
  65
  66 #define DACF_NUM_DEVSPECS 3
  67
  68 typedef struct dacf_arg {
  69         char *arg_name;                 /* operation argument name */
  70         char *arg_val;                  /* operation argument value */
  71         struct dacf_arg *arg_next;      /* next arg in chain */
  72 } dacf_arg_t;
  73
  74 typedef struct dacf_rule {
  75         char *r_devspec_data;           /* the dev-spec data to match against */
  76         char *r_module;                 /* module implementing the operation */
  77         char *r_opset;                  /* opset in module that impls. op */
  78         dacf_opid_t r_opid;             /* operation id for this rule */
  79         uint_t r_opts;                  /* reserved for options */
  80         uint_t r_refs;                  /* reference count */
  81         dacf_arg_t *r_args;             /* linked list of operation arguments */
  82 } dacf_rule_t;
  83
  84 typedef struct dacf_rsrvlist {
  85         dacf_rule_t *rsrv_rule;         /* the rule being reserved for later */
  86         dacf_infohdl_t rsrv_ihdl;
  87         int rsrv_result;                /* retval of the last invoke */
  88         struct dacf_rsrvlist *rsrv_next;
  89 } dacf_rsrvlist_t;
  90
  91 #ifdef _KERNEL
  92
  93 extern kmutex_t dacf_lock;
  94
  95 int dacf_module_register(char *, struct dacfsw *);
  96 int dacf_module_unregister(char *);
  97
  98 int dacf_arg_insert(dacf_arg_t **, char *, char *);
  99 void dacf_arglist_delete(dacf_arg_t **);
 100
 101 void dacf_init(void);
 102 int read_dacf_binding_file(char *);
 103 void dacf_clear_rules(void);
 104
 105 dacf_devspec_t dacf_get_devspec(char *);
 106 const char *dacf_devspec_to_str(dacf_devspec_t);
 107
 108 dacf_opid_t dacf_get_op(char *);
 109 const char *dacf_opid_to_str(dacf_opid_t);
 110
 111 int dacf_getopt(char *, uint_t *);
 112
 113 int dacf_rule_insert(dacf_devspec_t, char *, char *, char *,
 114     dacf_opid_t, uint_t, dacf_arg_t *);
 115 void dacf_rule_hold(dacf_rule_t *);
 116 void dacf_rule_rele(dacf_rule_t *);
 117
 118 struct ddi_minor_data;
 119 void dacf_rsrv_make(dacf_rsrvlist_t *, dacf_rule_t *, void *,
 120     dacf_rsrvlist_t **);
 121 void dacf_process_rsrvs(dacf_rsrvlist_t **, dacf_opid_t, int);
 122 void dacf_clr_rsrvs(dev_info_t *, dacf_opid_t);
 123
 124 dacf_rule_t *dacf_match(dacf_opid_t, dacf_devspec_t, const void *);
 125
 126 /*
 127  * Failure codes from dacf_op_invoke, assigned to dacf_rsrvlist_t.rsrv_result
 128  */
 129 #define DACF_ERR_MOD_NOTFOUND           -1
 130 #define DACF_ERR_OPSET_NOTFOUND         -2
 131 #define DACF_ERR_OP_NOTFOUND            -3
 132 #define DACF_ERR_OP_FAILED              -4
 133
 134 int dacf_op_invoke(dacf_rule_t *, dacf_infohdl_t, int);
 135
 136 /*
 137  * Debugging support
 138  */
 139 #define DACF_DBG_MSGS           0x00000001
 140 #define DACF_DBG_DEVI           0x00000002
 141
 142 extern int dacfdebug;
 143
 144
 145 /*
 146  * dacf client support: definitions pertaining to the various kernel hooks
 147  * that utilize the dacf framework
 148  */
 149
 150 void dacfc_match_create_minor(const char *, const char *, dev_info_t *,
 151     struct ddi_minor_data *, int);
 152
 153 int dacfc_postattach(dev_info_t *);
 154 int dacfc_predetach(dev_info_t *);
 155
 156 #endif /* _KERNEL */
 157
 158 #ifdef __cplusplus
 159 }
 160 #endif
 161
 162 #endif /* _DACF_IMPL_H */