1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 14 */ 15 16 #include <unistd.h> 17 #include <stdio.h> 18 #include <stdlib.h> 19 #include <fcntl.h> 20 #include <string.h> 21 #include <strings.h> 22 #include <limits.h> 23 #include <alloca.h> 24 #include <errno.h> 25 #include <libnvpair.h> 26 #include <sys/types.h> 27 #include <sys/stat.h> 28 #include <sys/param.h> 29 #include <sys/fm/protocol.h> 30 #include <fm/libtopo.h> 31 #include <fm/topo_mod.h> 32 33 #include "sys/scsi/adapters/mpt_sas/mptsas_ioctl.h" 34 35 #define TOPO_METH_MPTSAS_LED_MODE_VERSION 0 36 37 static int fac_prov_mptsas_enum(topo_mod_t *, tnode_t *, const char *, 38 topo_instance_t, topo_instance_t, void *, void *); 39 40 /* 41 * mpt_sas facility provider methods 42 */ 43 static int mptsas_led_mode(topo_mod_t *, tnode_t *, topo_version_t, 44 nvlist_t *, nvlist_t **); 45 46 const topo_modops_t mptsas_ops = { fac_prov_mptsas_enum, NULL }; 47 48 const topo_modinfo_t mptsas_info = 49 { "mpt_sas facility provider", FM_FMRI_SCHEME_HC, TOPO_VERSION, 50 &mptsas_ops }; 51 52 static const topo_method_t mptsas_fac_methods[] = { 53 { "mptsas_led_mode", TOPO_PROP_METH_DESC, 54 TOPO_METH_MPTSAS_LED_MODE_VERSION, 55 TOPO_STABILITY_INTERNAL, mptsas_led_mode }, 56 { NULL } 57 }; 58 59 /*ARGSUSED*/ 60 int 61 _topo_init(topo_mod_t *mod, topo_version_t version) 62 { 63 if (getenv("TOPOFACMPTSASDEBUG") != NULL) 64 topo_mod_setdebug(mod); 65 66 return (topo_mod_register(mod, &mptsas_info, TOPO_VERSION)); 67 } 68 69 void 70 _topo_fini(topo_mod_t *mod) 71 { 72 topo_mod_unregister(mod); 73 } 74 75 static int 76 do_led_control(topo_mod_t *mod, char *devctl, uint16_t enclosure, 77 uint16_t slot, uint8_t led, uint32_t *ledmode, boolean_t set) 78 { 79 int fd; 80 mptsas_led_control_t lc; 81 82 bzero(&lc, sizeof (lc)); 83 84 lc.Command = set ? MPTSAS_LEDCTL_FLAG_SET : MPTSAS_LEDCTL_FLAG_GET; 85 lc.Enclosure = enclosure; 86 lc.Slot = slot; 87 lc.Led = led; 88 lc.LedStatus = *ledmode; 89 90 if ((fd = open(devctl, (set ? O_RDWR : O_RDONLY))) == -1) { 91 topo_mod_dprintf(mod, "devctl open failed: %s", 92 strerror(errno)); 93 return (-1); 94 } 95 96 if (ioctl(fd, MPTIOCTL_LED_CONTROL, &lc) == -1) { 97 if (errno == ENOENT) { 98 /* 99 * If there is not presently a target attached for 100 * a particular enclosure/slot pair then the driver 101 * does not track LED status for this bay. Assume 102 * all LEDs are off. 103 */ 104 lc.LedStatus = 0; 105 } else { 106 topo_mod_dprintf(mod, "led control ioctl failed: %s", 107 strerror(errno)); 108 (void) close(fd); 109 return (-1); 110 } 111 } 112 113 *ledmode = lc.LedStatus ? TOPO_LED_STATE_ON : TOPO_LED_STATE_OFF; 114 115 (void) close(fd); 116 return (0); 117 } 118 119 static int 120 mptsas_led_mode(topo_mod_t *mod, tnode_t *node, topo_version_t vers, 121 nvlist_t *in, nvlist_t **nvout) 122 { 123 int err, ret = 0; 124 tnode_t *pnode = topo_node_parent(node); 125 uint32_t type, ledmode = 0; 126 nvlist_t *pargs, *nvl; 127 char *driver = NULL, *devctl = NULL; 128 uint32_t enclosure, slot; 129 uint8_t mptsas_led; 130 boolean_t set; 131 132 if (vers > TOPO_METH_MPTSAS_LED_MODE_VERSION) 133 return (topo_mod_seterrno(mod, ETOPO_METHOD_VERNEW)); 134 135 if (topo_prop_get_string(pnode, TOPO_PGROUP_BINDING, 136 TOPO_BINDING_DRIVER, &driver, &err) != 0 || 137 strcmp("mpt_sas", driver) != 0) { 138 topo_mod_dprintf(mod, "%s: Facility driver was not mpt_sas", 139 __func__); 140 ret = topo_mod_seterrno(mod, EMOD_NVL_INVAL); 141 goto out; 142 } 143 if (topo_prop_get_uint32(node, TOPO_PGROUP_FACILITY, TOPO_FACILITY_TYPE, 144 &type, &err) != 0) { 145 topo_mod_dprintf(mod, "%s: Failed to lookup %s property " 146 "(%s)", __func__, TOPO_FACILITY_TYPE, topo_strerror(err)); 147 return (topo_mod_seterrno(mod, EMOD_NVL_INVAL)); 148 } 149 switch (type) { 150 case (TOPO_LED_TYPE_SERVICE): 151 mptsas_led = MPTSAS_LEDCTL_LED_FAIL; 152 break; 153 case (TOPO_LED_TYPE_LOCATE): 154 mptsas_led = MPTSAS_LEDCTL_LED_IDENT; 155 break; 156 case (TOPO_LED_TYPE_OK2RM): 157 mptsas_led = MPTSAS_LEDCTL_LED_OK2RM; 158 break; 159 default: 160 topo_mod_dprintf(mod, "%s: Invalid LED type: 0x%x\n", __func__, 161 type); 162 return (topo_mod_seterrno(mod, EMOD_NVL_INVAL)); 163 } 164 if (topo_prop_get_string(pnode, TOPO_PGROUP_BINDING, 165 TOPO_BINDING_DEVCTL, &devctl, &err) != 0 || 166 topo_prop_get_uint32(pnode, TOPO_PGROUP_BINDING, 167 TOPO_BINDING_ENCLOSURE, &enclosure, &err) != 0 || 168 topo_prop_get_uint32(pnode, TOPO_PGROUP_BINDING, 169 TOPO_BINDING_SLOT, &slot, &err) != 0) { 170 topo_mod_dprintf(mod, "%s: Facility was missing mpt_sas binding" 171 " properties\n", __func__); 172 ret = topo_mod_seterrno(mod, EMOD_NVL_INVAL); 173 goto out; 174 } 175 176 if ((nvlist_lookup_nvlist(in, TOPO_PROP_PARGS, &pargs) == 0) && 177 nvlist_exists(pargs, TOPO_PROP_VAL_VAL)) { 178 /* 179 * Set the LED mode 180 */ 181 set = B_TRUE; 182 if ((ret = nvlist_lookup_uint32(pargs, TOPO_PROP_VAL_VAL, 183 &ledmode)) != 0) { 184 topo_mod_dprintf(mod, "%s: Failed to lookup %s nvpair " 185 "(%s)\n", __func__, TOPO_PROP_VAL_VAL, 186 strerror(ret)); 187 ret = topo_mod_seterrno(mod, EMOD_NVL_INVAL); 188 goto out; 189 } 190 topo_mod_dprintf(mod, "%s: Setting LED mode to %s\n", __func__, 191 ledmode ? "ON" : "OFF"); 192 } else { 193 /* 194 * Get the LED mode 195 */ 196 set = B_FALSE; 197 topo_mod_dprintf(mod, "%s: Getting LED mode\n", __func__); 198 } 199 200 if (do_led_control(mod, devctl, enclosure, slot, mptsas_led, &ledmode, 201 set) != 0) { 202 topo_mod_dprintf(mod, "%s: do_led_control failed", __func__); 203 ret = topo_mod_seterrno(mod, EMOD_UNKNOWN); 204 goto out; 205 } 206 207 if (topo_mod_nvalloc(mod, &nvl, NV_UNIQUE_NAME) != 0 || 208 nvlist_add_string(nvl, TOPO_PROP_VAL_NAME, TOPO_LED_MODE) != 0 || 209 nvlist_add_uint32(nvl, TOPO_PROP_VAL_TYPE, TOPO_TYPE_UINT32) != 0 || 210 nvlist_add_uint32(nvl, TOPO_PROP_VAL_VAL, ledmode) != 0) { 211 topo_mod_dprintf(mod, "%s: Failed to allocate 'out' nvlist\n", 212 __func__); 213 nvlist_free(nvl); 214 ret = topo_mod_seterrno(mod, EMOD_NOMEM); 215 goto out; 216 } 217 *nvout = nvl; 218 219 out: 220 if (driver != NULL) 221 topo_mod_strfree(mod, driver); 222 if (devctl != NULL) 223 topo_mod_strfree(mod, devctl); 224 return (ret); 225 } 226 227 /*ARGSUSED*/ 228 static int 229 fac_prov_mptsas_enum(topo_mod_t *mod, tnode_t *rnode, const char *name, 230 topo_instance_t min, topo_instance_t max, void *arg, void *unused) 231 { 232 if (topo_node_flags(rnode) == TOPO_NODE_FACILITY) { 233 if (topo_method_register(mod, rnode, mptsas_fac_methods) != 0) { 234 topo_mod_dprintf(mod, "%s: topo_method_register() " 235 "failed: %s", __func__, topo_mod_errmsg(mod)); 236 return (-1); 237 } 238 return (0); 239 } 240 241 topo_mod_dprintf(mod, "%s: unexpected node flags %x", __func__, 242 topo_node_flags(rnode)); 243 return (-1); 244 } 245