Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/io/scsi/adapters/scsi_vhci/scsi_vhci.c @ 6023:9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
| author | cm136836 |
|---|---|
| date | Fri, 15 Feb 2008 11:18:20 -0800 |
| parents | f3b9c8c61dbe |
| children | b578f00bc056 |
| rev | line source |
|---|---|
| 4851 | 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 /* | |
|
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22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. |
| 4851 | 23 * Use is subject to license terms. |
| 24 */ | |
| 25 #pragma ident "%Z%%M% %I% %E% SMI" | |
| 26 | |
| 27 /* | |
| 28 * Multiplexed I/O SCSI vHCI implementation | |
| 29 */ | |
| 30 | |
| 31 #include <sys/conf.h> | |
| 32 #include <sys/file.h> | |
| 33 #include <sys/ddi.h> | |
| 34 #include <sys/sunddi.h> | |
| 35 #include <sys/scsi/scsi.h> | |
| 36 #include <sys/scsi/impl/scsi_reset_notify.h> | |
| 37 #include <sys/sunmdi.h> | |
| 38 #include <sys/mdi_impldefs.h> | |
| 39 #include <sys/scsi/adapters/scsi_vhci.h> | |
| 40 #include <sys/disp.h> | |
| 41 #include <sys/byteorder.h> | |
| 42 | |
| 43 extern uintptr_t scsi_callback_id; | |
| 44 extern ddi_dma_attr_t scsi_alloc_attr; | |
| 45 | |
| 46 #ifdef DEBUG | |
| 47 int vhci_debug = VHCI_DEBUG_DEFAULT_VAL; | |
| 48 #endif | |
| 49 | |
| 50 /* retry for the vhci_do_prout command when a not ready is returned */ | |
| 51 int vhci_prout_not_ready_retry = 180; | |
| 52 | |
| 53 /* | |
| 54 * These values are defined to support the internal retry of | |
| 55 * SCSI packets for better sense code handling. | |
| 56 */ | |
| 57 #define VHCI_CMD_CMPLT 0 | |
| 58 #define VHCI_CMD_RETRY 1 | |
| 59 #define VHCI_CMD_ERROR -1 | |
| 60 | |
| 61 #define PROPFLAGS (DDI_PROP_DONTPASS | DDI_PROP_NOTPROM) | |
| 62 #define VHCI_SCSI_PERR 0x47 | |
| 63 #define VHCI_PGR_ILLEGALOP -2 | |
| 64 #define VHCI_NUM_UPDATE_TASKQ 8 | |
|
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65 /* changed to 132 to accomodate HDS */ |
|
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66 #define VHCI_STD_INQ_SIZE 132 |
| 4851 | 67 |
| 68 /* | |
| 69 * Version Macros | |
| 70 */ | |
|
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71 #define VHCI_NAME_VERSION "SCSI VHCI Driver 1.68" |
| 4851 | 72 char vhci_version_name[] = VHCI_NAME_VERSION; |
| 73 | |
| 74 int vhci_first_time = 0; | |
| 75 clock_t vhci_to_ticks = 0; | |
| 76 int vhci_init_wait_timeout = VHCI_INIT_WAIT_TIMEOUT; | |
| 77 kcondvar_t vhci_cv; | |
| 78 kmutex_t vhci_global_mutex; | |
| 79 void *vhci_softstate = NULL; /* for soft state */ | |
| 80 | |
| 81 /* | |
| 82 * Flag to delay the retry of the reserve command | |
| 83 */ | |
| 84 int vhci_reserve_delay = 100000; | |
| 85 static int vhci_path_quiesce_timeout = 60; | |
| 86 static uchar_t zero_key[MHIOC_RESV_KEY_SIZE]; | |
| 87 | |
| 88 /* uscsi delay for a TRAN_BUSY */ | |
| 89 static int vhci_uscsi_delay = 100000; | |
| 90 static int vhci_uscsi_retry_count = 180; | |
| 91 /* uscsi_restart_sense timeout id in case it needs to get canceled */ | |
| 92 static timeout_id_t vhci_restart_timeid = 0; | |
| 93 | |
| 94 /* | |
| 95 * Bidirectional map of 'target-port' to port id <pid> for support of | |
| 96 * iostat(1M) '-Xx' and '-Yx' output. | |
| 97 */ | |
| 98 static kmutex_t vhci_targetmap_mutex; | |
| 99 static uint_t vhci_targetmap_pid = 1; | |
| 100 static mod_hash_t *vhci_targetmap_bypid; /* <pid> -> 'target-port' */ | |
| 101 static mod_hash_t *vhci_targetmap_byport; /* 'target-port' -> <pid> */ | |
| 102 | |
| 103 /* | |
| 104 * functions exported by scsi_vhci struct cb_ops | |
| 105 */ | |
| 106 static int vhci_open(dev_t *, int, int, cred_t *); | |
| 107 static int vhci_close(dev_t, int, int, cred_t *); | |
| 108 static int vhci_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 109 | |
| 110 /* | |
| 111 * functions exported by scsi_vhci struct dev_ops | |
| 112 */ | |
| 113 static int vhci_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **); | |
| 114 static int vhci_attach(dev_info_t *, ddi_attach_cmd_t); | |
| 115 static int vhci_detach(dev_info_t *, ddi_detach_cmd_t); | |
| 116 | |
| 117 /* | |
| 118 * functions exported by scsi_vhci scsi_hba_tran_t transport table | |
| 119 */ | |
| 120 static int vhci_scsi_tgt_init(dev_info_t *, dev_info_t *, | |
| 121 scsi_hba_tran_t *, struct scsi_device *); | |
| 122 static void vhci_scsi_tgt_free(dev_info_t *, dev_info_t *, scsi_hba_tran_t *, | |
| 123 struct scsi_device *); | |
| 124 static int vhci_pgr_register_start(scsi_vhci_lun_t *, struct scsi_pkt *); | |
| 125 static int vhci_scsi_start(struct scsi_address *, struct scsi_pkt *); | |
| 126 static int vhci_scsi_abort(struct scsi_address *, struct scsi_pkt *); | |
| 127 static int vhci_scsi_reset(struct scsi_address *, int); | |
| 128 static int vhci_scsi_reset_target(struct scsi_address *, int level, | |
| 129 uint8_t select_path); | |
| 130 static int vhci_scsi_reset_bus(struct scsi_address *); | |
| 131 static int vhci_scsi_getcap(struct scsi_address *, char *, int); | |
| 132 static int vhci_scsi_setcap(struct scsi_address *, char *, int, int); | |
| 133 static int vhci_commoncap(struct scsi_address *, char *, int, int, int); | |
| 134 static int vhci_pHCI_cap(struct scsi_address *ap, char *cap, int val, int whom, | |
| 135 mdi_pathinfo_t *pip); | |
| 136 static struct scsi_pkt *vhci_scsi_init_pkt(struct scsi_address *, | |
| 137 struct scsi_pkt *, struct buf *, int, int, int, int, int (*)(), caddr_t); | |
| 138 static void vhci_scsi_destroy_pkt(struct scsi_address *, struct scsi_pkt *); | |
| 139 static void vhci_scsi_dmafree(struct scsi_address *, struct scsi_pkt *); | |
| 140 static void vhci_scsi_sync_pkt(struct scsi_address *, struct scsi_pkt *); | |
| 141 static int vhci_scsi_reset_notify(struct scsi_address *, int, void (*)(caddr_t), | |
| 142 caddr_t); | |
| 143 static int vhci_scsi_get_bus_addr(struct scsi_device *, char *, int); | |
| 144 static int vhci_scsi_get_name(struct scsi_device *, char *, int); | |
| 145 static int vhci_scsi_bus_power(dev_info_t *, void *, pm_bus_power_op_t, | |
| 146 void *, void *); | |
| 147 static int vhci_scsi_bus_config(dev_info_t *, uint_t, ddi_bus_config_op_t, | |
| 148 void *, dev_info_t **); | |
| 149 | |
| 150 /* | |
| 151 * functions registered with the mpxio framework via mdi_vhci_ops_t | |
| 152 */ | |
| 153 static int vhci_pathinfo_init(dev_info_t *, mdi_pathinfo_t *, int); | |
| 154 static int vhci_pathinfo_uninit(dev_info_t *, mdi_pathinfo_t *, int); | |
| 155 static int vhci_pathinfo_state_change(dev_info_t *, mdi_pathinfo_t *, | |
| 156 mdi_pathinfo_state_t, uint32_t, int); | |
| 157 static int vhci_pathinfo_online(dev_info_t *, mdi_pathinfo_t *, int); | |
| 158 static int vhci_pathinfo_offline(dev_info_t *, mdi_pathinfo_t *, int); | |
| 159 static int vhci_failover(dev_info_t *, dev_info_t *, int); | |
| 160 static void vhci_client_attached(dev_info_t *); | |
| 161 | |
| 162 static int vhci_ctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 163 static int vhci_devctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 164 static int vhci_ioc_get_phci_path(sv_iocdata_t *, caddr_t, int, caddr_t); | |
| 165 static int vhci_ioc_get_client_path(sv_iocdata_t *, caddr_t, int, caddr_t); | |
| 166 static int vhci_ioc_get_paddr(sv_iocdata_t *, caddr_t, int, caddr_t); | |
| 167 static int vhci_ioc_send_client_path(caddr_t, sv_iocdata_t *, int, caddr_t); | |
| 168 static void vhci_ioc_devi_to_path(dev_info_t *, caddr_t); | |
| 169 static int vhci_get_phci_path_list(dev_info_t *, sv_path_info_t *, uint_t); | |
| 170 static int vhci_get_client_path_list(dev_info_t *, sv_path_info_t *, uint_t); | |
| 171 static int vhci_get_iocdata(const void *, sv_iocdata_t *, int, caddr_t); | |
| 172 static int vhci_get_iocswitchdata(const void *, sv_switch_to_cntlr_iocdata_t *, | |
| 173 int, caddr_t); | |
| 174 static int vhci_ioc_alloc_pathinfo(sv_path_info_t **, sv_path_info_t **, | |
| 175 uint_t, sv_iocdata_t *, int, caddr_t); | |
| 176 static void vhci_ioc_free_pathinfo(sv_path_info_t *, sv_path_info_t *, uint_t); | |
| 177 static int vhci_ioc_send_pathinfo(sv_path_info_t *, sv_path_info_t *, uint_t, | |
| 178 sv_iocdata_t *, int, caddr_t); | |
| 179 static int vhci_handle_ext_fo(struct scsi_pkt *, int); | |
| 180 static int vhci_efo_watch_cb(caddr_t, struct scsi_watch_result *); | |
| 181 static int vhci_quiesce_lun(struct scsi_vhci_lun *); | |
| 182 static int vhci_pgr_validate_and_register(scsi_vhci_priv_t *); | |
| 183 static void vhci_dispatch_scsi_start(void *); | |
| 184 static void vhci_efo_done(void *); | |
| 185 static void vhci_initiate_auto_failback(void *); | |
| 186 static void vhci_update_pHCI_pkt(struct vhci_pkt *, struct scsi_pkt *); | |
| 187 static int vhci_update_pathinfo(struct scsi_device *, mdi_pathinfo_t *, | |
| 188 struct scsi_failover_ops *, scsi_vhci_lun_t *, struct scsi_vhci *); | |
| 189 static void vhci_kstat_create_pathinfo(mdi_pathinfo_t *); | |
| 190 static int vhci_quiesce_paths(dev_info_t *, dev_info_t *, | |
| 191 scsi_vhci_lun_t *, char *, char *); | |
| 192 | |
| 193 static char *vhci_devnm_to_guid(char *); | |
| 194 static int vhci_bind_transport(struct scsi_address *, struct vhci_pkt *, | |
| 195 int, int (*func)(caddr_t)); | |
| 196 static void vhci_intr(struct scsi_pkt *); | |
| 197 static int vhci_do_prout(scsi_vhci_priv_t *); | |
| 198 static void vhci_run_cmd(void *); | |
| 199 static int vhci_do_prin(struct vhci_pkt **); | |
| 200 static struct scsi_pkt *vhci_create_retry_pkt(struct vhci_pkt *); | |
| 201 static struct vhci_pkt *vhci_sync_retry_pkt(struct vhci_pkt *); | |
| 202 static struct scsi_vhci_lun *vhci_lun_lookup(dev_info_t *); | |
| 203 static struct scsi_vhci_lun *vhci_lun_lookup_alloc(dev_info_t *, char *, int *); | |
| 204 static void vhci_lun_free(dev_info_t *); | |
| 205 static int vhci_recovery_reset(scsi_vhci_lun_t *, struct scsi_address *, | |
| 206 uint8_t, uint8_t); | |
| 207 void vhci_update_pathstates(void *); | |
| 208 | |
| 209 #ifdef DEBUG | |
| 210 static void vhci_print_prin_keys(vhci_prin_readkeys_t *, int); | |
| 211 #endif | |
| 212 static void vhci_print_prout_keys(scsi_vhci_lun_t *, char *); | |
| 213 static void vhci_uscsi_iodone(struct scsi_pkt *pkt); | |
| 214 | |
| 215 /* | |
| 216 * MP-API related functions | |
| 217 */ | |
| 218 extern int vhci_mpapi_init(struct scsi_vhci *); | |
| 219 extern void vhci_mpapi_add_dev_prod(struct scsi_vhci *, char *); | |
| 220 extern int vhci_mpapi_ctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 221 extern void vhci_update_mpapi_data(struct scsi_vhci *, | |
| 222 scsi_vhci_lun_t *, mdi_pathinfo_t *); | |
| 223 extern void* vhci_get_mpapi_item(struct scsi_vhci *, mpapi_list_header_t *, | |
| 224 uint8_t, void*); | |
| 225 extern void vhci_mpapi_set_path_state(dev_info_t *, mdi_pathinfo_t *, int); | |
| 226 extern int vhci_mpapi_update_tpg_acc_state_for_lu(struct scsi_vhci *, | |
| 227 scsi_vhci_lun_t *); | |
| 228 | |
| 229 /* Special export to MP-API of tpgs non-'fops' entry point */ | |
| 230 int (*tpgs_set_target_groups)(struct scsi_address *, int, int); | |
| 231 | |
| 232 #define VHCI_DMA_MAX_XFER_CAP 0xffffffffULL | |
| 233 | |
| 234 #define VHCI_MAX_PGR_RETRIES 3 | |
| 235 | |
| 236 /* | |
| 237 * Macros for the device-type mpxio options | |
| 238 */ | |
| 239 #define LOAD_BALANCE_OPTIONS "load-balance-options" | |
| 240 #define LOGICAL_BLOCK_REGION_SIZE "region-size" | |
| 241 #define MPXIO_OPTIONS_LIST "device-type-mpxio-options-list" | |
| 242 #define DEVICE_TYPE_STR "device-type" | |
| 243 #define isdigit(ch) ((ch) >= '0' && (ch) <= '9') | |
| 244 | |
| 245 static struct cb_ops vhci_cb_ops = { | |
| 246 vhci_open, /* open */ | |
| 247 vhci_close, /* close */ | |
| 248 nodev, /* strategy */ | |
| 249 nodev, /* print */ | |
| 250 nodev, /* dump */ | |
| 251 nodev, /* read */ | |
| 252 nodev, /* write */ | |
| 253 vhci_ioctl, /* ioctl */ | |
| 254 nodev, /* devmap */ | |
| 255 nodev, /* mmap */ | |
| 256 nodev, /* segmap */ | |
| 257 nochpoll, /* chpoll */ | |
| 258 ddi_prop_op, /* cb_prop_op */ | |
| 259 0, /* streamtab */ | |
| 260 D_NEW | D_MP, /* cb_flag */ | |
| 261 CB_REV, /* rev */ | |
| 262 nodev, /* aread */ | |
| 263 nodev /* awrite */ | |
| 264 }; | |
| 265 | |
| 266 static struct dev_ops vhci_ops = { | |
| 267 DEVO_REV, | |
| 268 0, | |
| 269 vhci_getinfo, | |
| 270 nulldev, /* identify */ | |
| 271 nulldev, /* probe */ | |
| 272 vhci_attach, /* attach and detach are mandatory */ | |
| 273 vhci_detach, | |
| 274 nodev, /* reset */ | |
| 275 &vhci_cb_ops, /* cb_ops */ | |
| 276 NULL, /* bus_ops */ | |
| 277 NULL, /* power */ | |
| 278 }; | |
| 279 | |
| 280 extern struct mod_ops mod_driverops; | |
| 281 | |
| 282 static struct modldrv modldrv = { | |
| 283 &mod_driverops, | |
| 284 vhci_version_name, /* module name */ | |
| 285 &vhci_ops | |
| 286 }; | |
| 287 | |
| 288 static struct modlinkage modlinkage = { | |
| 289 MODREV_1, | |
| 290 &modldrv, | |
| 291 NULL | |
| 292 }; | |
| 293 | |
| 294 static mdi_vhci_ops_t vhci_opinfo = { | |
| 295 MDI_VHCI_OPS_REV, | |
| 296 vhci_pathinfo_init, /* Pathinfo node init callback */ | |
| 297 vhci_pathinfo_uninit, /* Pathinfo uninit callback */ | |
| 298 vhci_pathinfo_state_change, /* Pathinfo node state change */ | |
| 299 vhci_failover, /* failover callback */ | |
| 300 vhci_client_attached /* client attached callback */ | |
| 301 }; | |
| 302 | |
| 303 /* | |
| 304 * The scsi_failover table defines an ordered set of 'fops' modules supported | |
| 305 * by scsi_vhci. Currently, initialize this table from the 'ddi-forceload' | |
| 306 * property specified in scsi_vhci.conf. | |
| 307 */ | |
| 308 struct scsi_failover { | |
| 309 ddi_modhandle_t sf_mod; | |
| 310 struct scsi_failover_ops *sf_sfo; | |
| 311 } *scsi_failover_table; | |
| 312 uint_t scsi_nfailover; | |
| 313 | |
| 314 int | |
| 315 _init(void) | |
| 316 { | |
| 317 int rval; | |
| 318 | |
| 319 /* | |
| 320 * Allocate soft state and prepare to do ddi_soft_state_zalloc() | |
| 321 * before registering with the transport first. | |
| 322 */ | |
| 323 if ((rval = ddi_soft_state_init(&vhci_softstate, | |
| 324 sizeof (struct scsi_vhci), 1)) != 0) { | |
| 325 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 326 "!_init:soft state init failed\n")); | |
| 327 return (rval); | |
| 328 } | |
| 329 | |
| 330 if ((rval = scsi_hba_init(&modlinkage)) != 0) { | |
| 331 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 332 "!_init: scsi hba init failed\n")); | |
| 333 ddi_soft_state_fini(&vhci_softstate); | |
| 334 return (rval); | |
| 335 } | |
| 336 | |
| 337 mutex_init(&vhci_global_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 338 cv_init(&vhci_cv, NULL, CV_DRIVER, NULL); | |
| 339 | |
| 340 mutex_init(&vhci_targetmap_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 341 vhci_targetmap_byport = mod_hash_create_strhash( | |
| 342 "vhci_targetmap_byport", 256, mod_hash_null_valdtor); | |
| 343 vhci_targetmap_bypid = mod_hash_create_idhash( | |
| 344 "vhci_targetmap_bypid", 256, mod_hash_null_valdtor); | |
| 345 | |
| 346 if ((rval = mod_install(&modlinkage)) != 0) { | |
| 347 VHCI_DEBUG(1, (CE_NOTE, NULL, "!_init: mod_install failed\n")); | |
| 348 if (vhci_targetmap_bypid) | |
| 349 mod_hash_destroy_idhash(vhci_targetmap_bypid); | |
| 350 if (vhci_targetmap_byport) | |
| 351 mod_hash_destroy_strhash(vhci_targetmap_byport); | |
| 352 mutex_destroy(&vhci_targetmap_mutex); | |
| 353 cv_destroy(&vhci_cv); | |
| 354 mutex_destroy(&vhci_global_mutex); | |
| 355 scsi_hba_fini(&modlinkage); | |
| 356 ddi_soft_state_fini(&vhci_softstate); | |
| 357 } | |
| 358 return (rval); | |
| 359 } | |
| 360 | |
| 361 | |
| 362 /* | |
| 363 * the system is done with us as a driver, so clean up | |
| 364 */ | |
| 365 int | |
| 366 _fini(void) | |
| 367 { | |
| 368 int rval; | |
| 369 | |
| 370 /* | |
| 371 * don't start cleaning up until we know that the module remove | |
| 372 * has worked -- if this works, then we know that each instance | |
| 373 * has successfully been DDI_DETACHed | |
| 374 */ | |
| 375 if ((rval = mod_remove(&modlinkage)) != 0) { | |
| 376 VHCI_DEBUG(4, (CE_NOTE, NULL, "!_fini: mod_remove failed\n")); | |
| 377 return (rval); | |
| 378 } | |
| 379 | |
| 380 if (vhci_targetmap_bypid) | |
| 381 mod_hash_destroy_idhash(vhci_targetmap_bypid); | |
| 382 if (vhci_targetmap_byport) | |
| 383 mod_hash_destroy_strhash(vhci_targetmap_byport); | |
| 384 mutex_destroy(&vhci_targetmap_mutex); | |
| 385 cv_destroy(&vhci_cv); | |
| 386 mutex_destroy(&vhci_global_mutex); | |
| 387 scsi_hba_fini(&modlinkage); | |
| 388 ddi_soft_state_fini(&vhci_softstate); | |
| 389 | |
| 390 return (rval); | |
| 391 } | |
| 392 | |
| 393 int | |
| 394 _info(struct modinfo *modinfop) | |
| 395 { | |
| 396 return (mod_info(&modlinkage, modinfop)); | |
| 397 } | |
| 398 | |
| 399 /* | |
| 400 * Lookup scsi_failover by "short name" of failover module. | |
| 401 */ | |
| 402 struct scsi_failover_ops * | |
| 403 vhci_failover_ops_by_name(char *name) | |
| 404 { | |
| 405 struct scsi_failover *sf; | |
| 406 | |
| 407 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 408 if (sf->sf_sfo == NULL) | |
| 409 continue; | |
| 410 if (strcmp(sf->sf_sfo->sfo_name, name) == 0) | |
| 411 return (sf->sf_sfo); | |
| 412 } | |
| 413 return (NULL); | |
| 414 } | |
| 415 | |
| 416 /* | |
| 417 * Load all scsi_failover_ops 'fops' modules. | |
| 418 */ | |
| 419 static void | |
| 420 vhci_failover_modopen(struct scsi_vhci *vhci) | |
| 421 { | |
| 422 char **module; | |
| 423 int i; | |
| 424 struct scsi_failover *sf; | |
| 425 char **dt; | |
| 426 int e; | |
| 427 | |
| 428 if (scsi_failover_table) | |
| 429 return; | |
| 430 | |
| 431 /* Get the list of modules from scsi_vhci.conf */ | |
| 432 if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, | |
| 433 vhci->vhci_dip, DDI_PROP_DONTPASS, "ddi-forceload", | |
| 434 &module, &scsi_nfailover) != DDI_PROP_SUCCESS) { | |
| 435 cmn_err(CE_WARN, "scsi_vhci: " | |
| 436 "scsi_vhci.conf is missing 'ddi-forceload'"); | |
| 437 return; | |
| 438 } | |
| 439 if (scsi_nfailover == 0) { | |
| 440 cmn_err(CE_WARN, "scsi_vhci: " | |
| 441 "scsi_vhci.conf has empty 'ddi-forceload'"); | |
|
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442 ddi_prop_free(module); |
| 4851 | 443 return; |
| 444 } | |
| 445 | |
| 446 /* allocate failover table based on number of modules */ | |
| 447 scsi_failover_table = (struct scsi_failover *) | |
| 448 kmem_zalloc(sizeof (struct scsi_failover) * (scsi_nfailover + 1), | |
| 449 KM_SLEEP); | |
| 450 | |
| 451 /* loop over modules specified in scsi_vhci.conf and open each module */ | |
| 452 for (i = 0, sf = scsi_failover_table; i < scsi_nfailover; i++) { | |
| 453 if (module[i] == NULL) | |
| 454 continue; | |
| 455 | |
| 456 sf->sf_mod = ddi_modopen(module[i], KRTLD_MODE_FIRST, &e); | |
| 457 if (sf->sf_mod == NULL) { | |
| 458 /* | |
| 459 * A module returns EEXIST if other software is | |
| 460 * supporting the intended function: for example | |
| 461 * the scsi_vhci_f_sum_emc module returns EEXIST | |
| 462 * from _init if EMC powerpath software is installed. | |
| 463 */ | |
| 464 if (e != EEXIST) | |
| 465 cmn_err(CE_WARN, "scsi_vhci: unable to open " | |
| 466 "module '%s', error %d", module[i], e); | |
| 467 continue; | |
| 468 } | |
| 469 sf->sf_sfo = ddi_modsym(sf->sf_mod, | |
| 470 "scsi_vhci_failover_ops", &e); | |
| 471 if (sf->sf_sfo == NULL) { | |
| 472 cmn_err(CE_WARN, "scsi_vhci: " | |
| 473 "unable to import 'scsi_failover_ops' from '%s', " | |
| 474 "error %d", module[i], e); | |
| 475 (void) ddi_modclose(sf->sf_mod); | |
| 476 sf->sf_mod = NULL; | |
| 477 continue; | |
| 478 } | |
| 479 | |
| 480 /* register vid/pid of devices supported with mpapi */ | |
| 481 for (dt = sf->sf_sfo->sfo_devices; *dt; dt++) | |
| 482 vhci_mpapi_add_dev_prod(vhci, *dt); | |
| 483 | |
| 484 /* | |
| 485 * Special processing for SFO_NAME_TPGS module, which contains | |
| 486 * the `tpgs_set_target_groups` implementation needed by the | |
| 487 * MP-API code. | |
| 488 */ | |
| 489 if (strcmp(sf->sf_sfo->sfo_name, SFO_NAME_TPGS) == 0) { | |
| 490 tpgs_set_target_groups = | |
| 491 (int (*)(struct scsi_address *, int, int)) | |
| 492 ddi_modsym(sf->sf_mod, "std_set_target_groups", &e); | |
| 493 if (tpgs_set_target_groups == NULL) { | |
| 494 cmn_err(CE_WARN, "scsi_vhci: " | |
| 495 "unable to import 'std_set_target_groups' " | |
| 496 "from '%s', error %d", module[i], e); | |
| 497 } | |
| 498 } | |
| 499 | |
| 500 sf++; | |
| 501 } | |
| 502 | |
| 503 /* verify that at least the "well-known" modules were there */ | |
| 504 if (vhci_failover_ops_by_name(SFO_NAME_SYM) == NULL) | |
| 505 cmn_err(CE_WARN, "scsi_vhci: well-known module \"" | |
| 506 SFO_NAME_SYM "\" not defined in scsi_vhci.conf's " | |
| 507 "'ddi-forceload'"); | |
| 508 if (vhci_failover_ops_by_name(SFO_NAME_TPGS) == NULL) | |
| 509 cmn_err(CE_WARN, "scsi_vhci: well-known module \"" | |
| 510 SFO_NAME_TPGS "\" not defined in scsi_vhci.conf's " | |
| 511 "'ddi-forceload'"); | |
| 512 | |
| 513 /* call sfo_init for modules that need it */ | |
| 514 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 515 if (sf->sf_sfo && sf->sf_sfo->sfo_init) | |
| 516 (*sf->sf_sfo->sfo_init)(); | |
| 517 } | |
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518 |
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519 ddi_prop_free(module); |
| 4851 | 520 } |
| 521 | |
| 522 /* | |
| 523 * unload all loaded scsi_failover_ops modules | |
| 524 */ | |
| 525 static void | |
| 526 vhci_failover_modclose() | |
| 527 { | |
| 528 struct scsi_failover *sf; | |
| 529 | |
| 530 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 531 if ((sf->sf_mod == NULL) || (sf->sf_sfo == NULL)) | |
| 532 continue; | |
| 533 (void) ddi_modclose(sf->sf_mod); | |
| 534 sf->sf_mod = NULL; | |
| 535 sf->sf_sfo = NULL; | |
| 536 } | |
| 537 | |
| 538 if (scsi_failover_table && scsi_nfailover) | |
| 539 kmem_free(scsi_failover_table, | |
| 540 sizeof (struct scsi_failover) * (scsi_nfailover + 1)); | |
| 541 scsi_failover_table = NULL; | |
| 542 scsi_nfailover = 0; | |
| 543 } | |
| 544 | |
| 545 /* ARGSUSED */ | |
| 546 static int | |
| 547 vhci_open(dev_t *devp, int flag, int otype, cred_t *credp) | |
| 548 { | |
| 549 struct scsi_vhci *vhci; | |
| 550 | |
| 551 if (otype != OTYP_CHR) { | |
| 552 return (EINVAL); | |
| 553 } | |
| 554 | |
| 555 vhci = ddi_get_soft_state(vhci_softstate, MINOR2INST(getminor(*devp))); | |
| 556 if (vhci == NULL) { | |
| 557 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_open: failed ENXIO\n")); | |
| 558 return (ENXIO); | |
| 559 } | |
| 560 | |
| 561 mutex_enter(&vhci->vhci_mutex); | |
| 562 if ((flag & FEXCL) && (vhci->vhci_state & VHCI_STATE_OPEN)) { | |
| 563 mutex_exit(&vhci->vhci_mutex); | |
| 564 vhci_log(CE_NOTE, vhci->vhci_dip, | |
| 565 "!vhci%d: Already open\n", getminor(*devp)); | |
| 566 return (EBUSY); | |
| 567 } | |
| 568 | |
| 569 vhci->vhci_state |= VHCI_STATE_OPEN; | |
| 570 mutex_exit(&vhci->vhci_mutex); | |
| 571 return (0); | |
| 572 } | |
| 573 | |
| 574 | |
| 575 /* ARGSUSED */ | |
| 576 static int | |
| 577 vhci_close(dev_t dev, int flag, int otype, cred_t *credp) | |
| 578 { | |
| 579 struct scsi_vhci *vhci; | |
| 580 | |
| 581 if (otype != OTYP_CHR) { | |
| 582 return (EINVAL); | |
| 583 } | |
| 584 | |
| 585 vhci = ddi_get_soft_state(vhci_softstate, MINOR2INST(getminor(dev))); | |
| 586 if (vhci == NULL) { | |
| 587 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_close: failed ENXIO\n")); | |
| 588 return (ENXIO); | |
| 589 } | |
| 590 | |
| 591 mutex_enter(&vhci->vhci_mutex); | |
| 592 vhci->vhci_state &= ~VHCI_STATE_OPEN; | |
| 593 mutex_exit(&vhci->vhci_mutex); | |
| 594 | |
| 595 return (0); | |
| 596 } | |
| 597 | |
| 598 /* ARGSUSED */ | |
| 599 static int | |
| 600 vhci_ioctl(dev_t dev, int cmd, intptr_t data, int mode, | |
| 601 cred_t *credp, int *rval) | |
| 602 { | |
| 603 if (IS_DEVCTL(cmd)) { | |
| 604 return (vhci_devctl(dev, cmd, data, mode, credp, rval)); | |
| 605 } else if (cmd == MP_CMD) { | |
| 606 return (vhci_mpapi_ctl(dev, cmd, data, mode, credp, rval)); | |
| 607 } else { | |
| 608 return (vhci_ctl(dev, cmd, data, mode, credp, rval)); | |
| 609 } | |
| 610 } | |
| 611 | |
| 612 /* | |
| 613 * attach the module | |
| 614 */ | |
| 615 static int | |
| 616 vhci_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) | |
| 617 { | |
| 618 int rval = DDI_FAILURE; | |
| 619 int scsi_hba_attached = 0; | |
| 620 int vhci_attached = 0; | |
| 621 int mutex_initted = 0; | |
| 622 int instance; | |
| 623 struct scsi_vhci *vhci; | |
| 624 scsi_hba_tran_t *tran; | |
| 625 char cache_name_buf[64]; | |
| 626 char *data; | |
| 627 | |
| 628 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_attach: cmd=0x%x\n", cmd)); | |
| 629 | |
| 630 instance = ddi_get_instance(dip); | |
| 631 | |
| 632 switch (cmd) { | |
| 633 case DDI_ATTACH: | |
| 634 break; | |
| 635 | |
| 636 case DDI_RESUME: | |
| 637 case DDI_PM_RESUME: | |
| 638 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_attach: resume not yet" | |
| 639 "implemented\n")); | |
| 640 return (rval); | |
| 641 | |
| 642 default: | |
| 643 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 644 "!vhci_attach: unknown ddi command\n")); | |
| 645 return (rval); | |
| 646 } | |
| 647 | |
| 648 /* | |
| 649 * Allocate vhci data structure. | |
| 650 */ | |
| 651 if (ddi_soft_state_zalloc(vhci_softstate, instance) != DDI_SUCCESS) { | |
| 652 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 653 "soft state alloc failed\n")); | |
| 654 return (DDI_FAILURE); | |
| 655 } | |
| 656 | |
| 657 if ((vhci = ddi_get_soft_state(vhci_softstate, instance)) == NULL) { | |
| 658 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 659 "bad soft state\n")); | |
| 660 ddi_soft_state_free(vhci_softstate, instance); | |
| 661 return (DDI_FAILURE); | |
| 662 } | |
| 663 | |
| 664 /* Allocate packet cache */ | |
| 665 (void) snprintf(cache_name_buf, sizeof (cache_name_buf), | |
| 666 "vhci%d_cache", instance); | |
| 667 | |
| 668 mutex_init(&vhci->vhci_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 669 mutex_initted++; | |
| 670 | |
| 671 /* | |
| 672 * Allocate a transport structure | |
| 673 */ | |
| 674 tran = scsi_hba_tran_alloc(dip, SCSI_HBA_CANSLEEP); | |
| 675 ASSERT(tran != NULL); | |
| 676 | |
| 677 vhci->vhci_tran = tran; | |
| 678 vhci->vhci_dip = dip; | |
| 679 vhci->vhci_instance = instance; | |
| 680 | |
| 681 tran->tran_hba_private = vhci; | |
| 682 tran->tran_tgt_private = NULL; | |
| 683 tran->tran_tgt_init = vhci_scsi_tgt_init; | |
| 684 tran->tran_tgt_probe = NULL; | |
| 685 tran->tran_tgt_free = vhci_scsi_tgt_free; | |
| 686 | |
| 687 tran->tran_start = vhci_scsi_start; | |
| 688 tran->tran_abort = vhci_scsi_abort; | |
| 689 tran->tran_reset = vhci_scsi_reset; | |
| 690 tran->tran_getcap = vhci_scsi_getcap; | |
| 691 tran->tran_setcap = vhci_scsi_setcap; | |
| 692 tran->tran_init_pkt = vhci_scsi_init_pkt; | |
| 693 tran->tran_destroy_pkt = vhci_scsi_destroy_pkt; | |
| 694 tran->tran_dmafree = vhci_scsi_dmafree; | |
| 695 tran->tran_sync_pkt = vhci_scsi_sync_pkt; | |
| 696 tran->tran_reset_notify = vhci_scsi_reset_notify; | |
| 697 | |
| 698 tran->tran_get_bus_addr = vhci_scsi_get_bus_addr; | |
| 699 tran->tran_get_name = vhci_scsi_get_name; | |
| 700 tran->tran_bus_reset = NULL; | |
| 701 tran->tran_quiesce = NULL; | |
| 702 tran->tran_unquiesce = NULL; | |
| 703 | |
| 704 /* | |
| 705 * register event notification routines with scsa | |
| 706 */ | |
| 707 tran->tran_get_eventcookie = NULL; | |
| 708 tran->tran_add_eventcall = NULL; | |
| 709 tran->tran_remove_eventcall = NULL; | |
| 710 tran->tran_post_event = NULL; | |
| 711 | |
| 712 tran->tran_bus_power = vhci_scsi_bus_power; | |
| 713 | |
| 714 tran->tran_bus_config = vhci_scsi_bus_config; | |
| 715 | |
| 716 /* | |
| 717 * Attach this instance with the mpxio framework | |
| 718 */ | |
| 719 if (mdi_vhci_register(MDI_HCI_CLASS_SCSI, dip, &vhci_opinfo, 0) | |
| 720 != MDI_SUCCESS) { | |
| 721 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 722 "mdi_vhci_register failed\n")); | |
| 723 goto attach_fail; | |
| 724 } | |
| 725 vhci_attached++; | |
| 726 | |
| 727 /* | |
| 728 * Attach this instance of the hba. | |
| 729 * | |
| 730 * Regarding dma attributes: Since scsi_vhci is a virtual scsi HBA | |
| 731 * driver, it has nothing to do with DMA. However, when calling | |
| 732 * scsi_hba_attach_setup() we need to pass something valid in the | |
| 733 * dma attributes parameter. So we just use scsi_alloc_attr. | |
| 734 * SCSA itself seems to care only for dma_attr_minxfer and | |
| 735 * dma_attr_burstsizes fields of dma attributes structure. | |
| 736 * It expects those fileds to be non-zero. | |
| 737 */ | |
| 738 if (scsi_hba_attach_setup(dip, &scsi_alloc_attr, tran, | |
| 739 SCSI_HBA_TRAN_CLONE) != DDI_SUCCESS) { | |
| 740 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 741 "hba attach failed\n")); | |
| 742 goto attach_fail; | |
| 743 } | |
| 744 scsi_hba_attached++; | |
| 745 | |
| 746 if (ddi_create_minor_node(dip, "devctl", S_IFCHR, | |
| 747 INST2DEVCTL(instance), DDI_NT_SCSI_NEXUS, 0) != DDI_SUCCESS) { | |
| 748 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 749 " ddi_create_minor_node failed\n")); | |
| 750 goto attach_fail; | |
| 751 } | |
| 752 | |
| 753 /* | |
| 754 * Set pm-want-child-notification property for | |
| 755 * power management of the phci and client | |
| 756 */ | |
| 757 if (ddi_prop_create(DDI_DEV_T_NONE, dip, DDI_PROP_CANSLEEP, | |
| 758 "pm-want-child-notification?", NULL, NULL) != DDI_PROP_SUCCESS) { | |
| 759 cmn_err(CE_WARN, | |
| 760 "%s%d fail to create pm-want-child-notification? prop", | |
| 761 ddi_driver_name(dip), ddi_get_instance(dip)); | |
| 762 goto attach_fail; | |
| 763 } | |
| 764 | |
| 765 vhci->vhci_taskq = taskq_create("vhci_taskq", 1, MINCLSYSPRI, 1, 4, 0); | |
| 766 vhci->vhci_update_pathstates_taskq = | |
| 767 taskq_create("vhci_update_pathstates", VHCI_NUM_UPDATE_TASKQ, | |
| 768 MINCLSYSPRI, 1, 4, 0); | |
| 769 ASSERT(vhci->vhci_taskq); | |
| 770 ASSERT(vhci->vhci_update_pathstates_taskq); | |
| 771 | |
| 772 /* | |
| 773 * Set appropriate configuration flags based on options set in | |
| 774 * conf file. | |
| 775 */ | |
| 776 vhci->vhci_conf_flags = 0; | |
| 777 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, PROPFLAGS, | |
| 778 "auto-failback", &data) == DDI_SUCCESS) { | |
| 779 if (strcmp(data, "enable") == 0) | |
| 780 vhci->vhci_conf_flags |= VHCI_CONF_FLAGS_AUTO_FAILBACK; | |
| 781 ddi_prop_free(data); | |
| 782 } | |
| 783 | |
| 784 if (!(vhci->vhci_conf_flags & VHCI_CONF_FLAGS_AUTO_FAILBACK)) | |
| 785 vhci_log(CE_NOTE, dip, "!Auto-failback capability " | |
| 786 "disabled through scsi_vhci.conf file."); | |
| 787 | |
| 788 /* | |
| 789 * Allocate an mpapi private structure | |
| 790 */ | |
| 791 vhci->mp_priv = kmem_zalloc(sizeof (mpapi_priv_t), KM_SLEEP); | |
| 792 if (vhci_mpapi_init(vhci) != 0) { | |
| 793 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_attach: " | |
| 794 "vhci_mpapi_init() failed")); | |
| 795 } | |
| 796 | |
| 797 vhci_failover_modopen(vhci); /* load failover modules */ | |
| 798 | |
| 799 ddi_report_dev(dip); | |
| 800 return (DDI_SUCCESS); | |
| 801 | |
| 802 attach_fail: | |
| 803 if (vhci_attached) | |
| 804 (void) mdi_vhci_unregister(dip, 0); | |
| 805 | |
| 806 if (scsi_hba_attached) | |
| 807 (void) scsi_hba_detach(dip); | |
| 808 | |
| 809 if (vhci->vhci_tran) | |
| 810 scsi_hba_tran_free(vhci->vhci_tran); | |
| 811 | |
| 812 if (mutex_initted) { | |
| 813 mutex_destroy(&vhci->vhci_mutex); | |
| 814 } | |
| 815 | |
| 816 ddi_soft_state_free(vhci_softstate, instance); | |
| 817 return (DDI_FAILURE); | |
| 818 } | |
| 819 | |
| 820 | |
| 821 /*ARGSUSED*/ | |
| 822 static int | |
| 823 vhci_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) | |
| 824 { | |
| 825 int instance = ddi_get_instance(dip); | |
| 826 scsi_hba_tran_t *tran; | |
| 827 struct scsi_vhci *vhci; | |
| 828 | |
| 829 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_detach: cmd=0x%x\n", cmd)); | |
| 830 | |
| 831 if ((tran = ddi_get_driver_private(dip)) == NULL) | |
| 832 return (DDI_FAILURE); | |
| 833 | |
| 834 vhci = TRAN2HBAPRIVATE(tran); | |
| 835 if (!vhci) { | |
| 836 return (DDI_FAILURE); | |
| 837 } | |
| 838 | |
| 839 switch (cmd) { | |
| 840 case DDI_DETACH: | |
| 841 break; | |
| 842 | |
| 843 case DDI_SUSPEND: | |
| 844 case DDI_PM_SUSPEND: | |
| 845 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_detach: suspend/pm not yet" | |
| 846 "implemented\n")); | |
| 847 return (DDI_FAILURE); | |
| 848 | |
| 849 default: | |
| 850 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 851 "!vhci_detach: unknown ddi command\n")); | |
| 852 return (DDI_FAILURE); | |
| 853 } | |
| 854 | |
| 855 (void) mdi_vhci_unregister(dip, 0); | |
| 856 (void) scsi_hba_detach(dip); | |
| 857 scsi_hba_tran_free(tran); | |
| 858 | |
| 859 if (ddi_prop_remove(DDI_DEV_T_NONE, dip, | |
| 860 "pm-want-child-notification?") != DDI_PROP_SUCCESS) { | |
| 861 cmn_err(CE_WARN, | |
| 862 "%s%d unable to remove prop pm-want_child_notification?", | |
| 863 ddi_driver_name(dip), ddi_get_instance(dip)); | |
| 864 } | |
| 865 if (vhci_restart_timeid != 0) { | |
| 866 (void) untimeout(vhci_restart_timeid); | |
| 867 } | |
| 868 vhci_restart_timeid = 0; | |
| 869 | |
| 870 mutex_destroy(&vhci->vhci_mutex); | |
| 871 vhci->vhci_dip = NULL; | |
| 872 vhci->vhci_tran = NULL; | |
| 873 taskq_destroy(vhci->vhci_taskq); | |
| 874 taskq_destroy(vhci->vhci_update_pathstates_taskq); | |
| 875 ddi_remove_minor_node(dip, NULL); | |
| 876 ddi_soft_state_free(vhci_softstate, instance); | |
| 877 | |
| 878 vhci_failover_modclose(); /* unload failover modules */ | |
| 879 return (DDI_SUCCESS); | |
| 880 } | |
| 881 | |
| 882 /* | |
| 883 * vhci_getinfo() | |
| 884 * Given the device number, return the devinfo pointer or the | |
| 885 * instance number. | |
| 886 * Note: always succeed DDI_INFO_DEVT2INSTANCE, even before attach. | |
| 887 */ | |
| 888 | |
| 889 /*ARGSUSED*/ | |
| 890 static int | |
| 891 vhci_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) | |
| 892 { | |
| 893 struct scsi_vhci *vhcip; | |
| 894 int instance = MINOR2INST(getminor((dev_t)arg)); | |
| 895 | |
| 896 switch (cmd) { | |
| 897 case DDI_INFO_DEVT2DEVINFO: | |
| 898 vhcip = ddi_get_soft_state(vhci_softstate, instance); | |
| 899 if (vhcip != NULL) | |
| 900 *result = vhcip->vhci_dip; | |
| 901 else { | |
| 902 *result = NULL; | |
| 903 return (DDI_FAILURE); | |
| 904 } | |
| 905 break; | |
| 906 | |
| 907 case DDI_INFO_DEVT2INSTANCE: | |
| 908 *result = (void *)(uintptr_t)instance; | |
| 909 break; | |
| 910 | |
| 911 default: | |
| 912 return (DDI_FAILURE); | |
| 913 } | |
| 914 | |
| 915 return (DDI_SUCCESS); | |
| 916 } | |
| 917 | |
| 918 | |
| 919 /*ARGSUSED*/ | |
| 920 static int | |
| 921 vhci_scsi_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip, | |
| 922 scsi_hba_tran_t *hba_tran, struct scsi_device *sd) | |
| 923 { | |
| 924 char *guid; | |
| 925 scsi_vhci_lun_t *vlun; | |
| 926 struct scsi_vhci *vhci; | |
| 927 clock_t from_ticks; | |
| 928 mdi_pathinfo_t *pip; | |
| 929 int rval; | |
| 930 | |
| 931 ASSERT(hba_dip != NULL); | |
| 932 ASSERT(tgt_dip != NULL); | |
| 933 | |
| 934 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(hba_dip)); | |
| 935 ASSERT(vhci != NULL); | |
| 936 | |
| 937 VHCI_DEBUG(4, (CE_NOTE, hba_dip, | |
| 938 "!tgt_init: called for %s (instance %d)\n", | |
| 939 ddi_driver_name(tgt_dip), ddi_get_instance(tgt_dip))); | |
| 940 | |
| 941 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, | |
| 942 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 943 /* | |
| 944 * This must be the .conf node. The ssd node under | |
| 945 * fp already inserts a delay, so we just return from here. | |
| 946 * We rely on this delay to have all dips be posted to | |
| 947 * the ndi hotplug thread's newdev list. This is | |
| 948 * necessary for the deferred attach mechanism to work | |
| 949 * and opens() done soon after boot to succeed. | |
| 950 */ | |
| 951 VHCI_DEBUG(4, (CE_WARN, hba_dip, "tgt_init: lun guid " | |
| 952 "property failed")); | |
| 953 return (DDI_NOT_WELL_FORMED); | |
| 954 } | |
| 955 | |
| 956 vlun = vhci_lun_lookup(tgt_dip); | |
| 957 | |
| 958 mutex_enter(&vhci_global_mutex); | |
| 959 | |
| 960 from_ticks = ddi_get_lbolt(); | |
| 961 if (vhci_to_ticks == 0) { | |
| 962 vhci_to_ticks = from_ticks + | |
| 963 drv_usectohz(vhci_init_wait_timeout); | |
| 964 } | |
| 965 | |
| 966 #if DEBUG | |
| 967 if (vlun) { | |
| 968 VHCI_DEBUG(1, (CE_WARN, hba_dip, "tgt_init: " | |
| 969 "vhci_scsi_tgt_init: guid %s : found vlun 0x%p " | |
| 970 "from_ticks %lx to_ticks %lx", | |
| 971 guid, (void *)vlun, from_ticks, vhci_to_ticks)); | |
| 972 } else { | |
| 973 VHCI_DEBUG(1, (CE_WARN, hba_dip, "tgt_init: " | |
| 974 "vhci_scsi_tgt_init: guid %s : vlun not found " | |
| 975 "from_ticks %lx to_ticks %lx", guid, from_ticks, | |
| 976 vhci_to_ticks)); | |
| 977 } | |
| 978 #endif | |
| 979 | |
| 980 rval = mdi_select_path(tgt_dip, NULL, | |
| 981 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), NULL, &pip); | |
| 982 if (rval == MDI_SUCCESS) { | |
| 983 mdi_rele_path(pip); | |
| 984 } | |
| 985 | |
| 986 /* | |
| 987 * Wait for the following conditions : | |
| 988 * 1. no vlun available yet | |
| 989 * 2. no path established | |
| 990 * 3. timer did not expire | |
| 991 */ | |
| 992 while ((vlun == NULL) || (mdi_client_get_path_count(tgt_dip) == 0) || | |
| 993 (rval != MDI_SUCCESS)) { | |
| 994 if (vlun && vlun->svl_not_supported) { | |
| 995 VHCI_DEBUG(1, (CE_WARN, hba_dip, "tgt_init: " | |
| 996 "vlun 0x%p lun guid %s not supported!", | |
| 997 (void *)vlun, guid)); | |
| 998 mutex_exit(&vhci_global_mutex); | |
| 999 ddi_prop_free(guid); | |
| 1000 return (DDI_NOT_WELL_FORMED); | |
| 1001 } | |
| 1002 if ((vhci_first_time == 0) && (from_ticks >= vhci_to_ticks)) { | |
| 1003 vhci_first_time = 1; | |
| 1004 } | |
| 1005 if (vhci_first_time == 1) { | |
| 1006 VHCI_DEBUG(1, (CE_WARN, hba_dip, "vhci_scsi_tgt_init: " | |
| 1007 "no wait for %s. from_tick %lx, to_tick %lx", | |
| 1008 guid, from_ticks, vhci_to_ticks)); | |
| 1009 mutex_exit(&vhci_global_mutex); | |
| 1010 ddi_prop_free(guid); | |
| 1011 return (DDI_NOT_WELL_FORMED); | |
| 1012 } | |
| 1013 | |
| 1014 if (cv_timedwait(&vhci_cv, | |
| 1015 &vhci_global_mutex, vhci_to_ticks) == -1) { | |
| 1016 /* Timed out */ | |
| 1017 #ifdef DEBUG | |
| 1018 if (vlun == NULL) { | |
| 1019 VHCI_DEBUG(1, (CE_WARN, hba_dip, | |
| 1020 "tgt_init: no vlun for %s!", guid)); | |
| 1021 } else if (mdi_client_get_path_count(tgt_dip) == 0) { | |
| 1022 VHCI_DEBUG(1, (CE_WARN, hba_dip, | |
| 1023 "tgt_init: client path count is " | |
| 1024 "zero for %s!", guid)); | |
| 1025 } else { | |
| 1026 VHCI_DEBUG(1, (CE_WARN, hba_dip, | |
| 1027 "tgt_init: client path not " | |
| 1028 "available yet for %s!", guid)); | |
| 1029 } | |
| 1030 #endif /* DEBUG */ | |
| 1031 mutex_exit(&vhci_global_mutex); | |
| 1032 ddi_prop_free(guid); | |
| 1033 return (DDI_NOT_WELL_FORMED); | |
| 1034 } | |
| 1035 vlun = vhci_lun_lookup(tgt_dip); | |
| 1036 rval = mdi_select_path(tgt_dip, NULL, | |
| 1037 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 1038 NULL, &pip); | |
| 1039 if (rval == MDI_SUCCESS) { | |
| 1040 mdi_rele_path(pip); | |
| 1041 } | |
| 1042 from_ticks = ddi_get_lbolt(); | |
| 1043 } | |
| 1044 mutex_exit(&vhci_global_mutex); | |
| 1045 | |
| 1046 ASSERT(vlun != NULL); | |
| 1047 ddi_prop_free(guid); | |
| 1048 hba_tran->tran_tgt_private = vlun; | |
| 1049 | |
| 1050 return (DDI_SUCCESS); | |
| 1051 } | |
| 1052 | |
| 1053 /*ARGSUSED*/ | |
| 1054 static void | |
| 1055 vhci_scsi_tgt_free(dev_info_t *hba_dip, dev_info_t *tgt_dip, | |
| 1056 scsi_hba_tran_t *hba_tran, struct scsi_device *sd) | |
| 1057 { | |
| 1058 } | |
| 1059 | |
| 1060 /* | |
| 1061 * a PGR register command has started; copy the info we need | |
| 1062 */ | |
| 1063 int | |
| 1064 vhci_pgr_register_start(scsi_vhci_lun_t *vlun, struct scsi_pkt *pkt) | |
| 1065 { | |
| 1066 struct vhci_pkt *vpkt = TGTPKT2VHCIPKT(pkt); | |
| 1067 void *addr; | |
| 1068 | |
| 1069 if (!vpkt->vpkt_tgt_init_bp) | |
| 1070 return (TRAN_BADPKT); | |
| 1071 | |
| 1072 addr = bp_mapin_common(vpkt->vpkt_tgt_init_bp, | |
| 1073 (vpkt->vpkt_flags & CFLAG_NOWAIT) ? VM_NOSLEEP : VM_SLEEP); | |
| 1074 if (addr == NULL) | |
| 1075 return (TRAN_BUSY); | |
| 1076 | |
| 1077 mutex_enter(&vlun->svl_mutex); | |
| 1078 | |
| 1079 vhci_print_prout_keys(vlun, "v_pgr_reg_start: before bcopy:"); | |
| 1080 | |
| 1081 bcopy(addr, &vlun->svl_prout, sizeof (vhci_prout_t) - | |
| 1082 (2 * MHIOC_RESV_KEY_SIZE*sizeof (char))); | |
| 1083 bcopy(pkt->pkt_cdbp, vlun->svl_cdb, sizeof (vlun->svl_cdb)); | |
| 1084 | |
| 1085 vhci_print_prout_keys(vlun, "v_pgr_reg_start: after bcopy:"); | |
| 1086 | |
| 1087 vlun->svl_time = pkt->pkt_time; | |
| 1088 vlun->svl_bcount = vpkt->vpkt_tgt_init_bp->b_bcount; | |
| 1089 vlun->svl_first_path = vpkt->vpkt_path; | |
| 1090 mutex_exit(&vlun->svl_mutex); | |
| 1091 return (0); | |
| 1092 } | |
| 1093 | |
| 1094 /* | |
| 1095 * Function name : vhci_scsi_start() | |
| 1096 * | |
| 1097 * Return Values : TRAN_FATAL_ERROR - vhci has been shutdown | |
| 1098 * or other fatal failure | |
| 1099 * preventing packet transportation | |
| 1100 * TRAN_BUSY - request queue is full | |
| 1101 * TRAN_ACCEPT - pkt has been submitted to phci | |
| 1102 * (or is held in the waitQ) | |
| 1103 * Description : Implements SCSA's tran_start() entry point for | |
| 1104 * packet transport | |
| 1105 * | |
| 1106 */ | |
| 1107 static int | |
| 1108 vhci_scsi_start(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1109 { | |
| 1110 int rval = TRAN_ACCEPT; | |
| 1111 int instance, held; | |
| 1112 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 1113 struct scsi_vhci_lun *vlun = ADDR2VLUN(ap); | |
| 1114 struct vhci_pkt *vpkt = TGTPKT2VHCIPKT(pkt); | |
| 1115 int flags = 0; | |
| 1116 scsi_vhci_priv_t *svp; | |
| 1117 dev_info_t *cdip; | |
| 1118 client_lb_t lbp; | |
| 1119 int restore_lbp = 0; | |
| 1120 /* set if pkt is SCSI-II RESERVE cmd */ | |
| 1121 int pkt_reserve_cmd = 0; | |
| 1122 int reserve_failed = 0; | |
| 1123 | |
| 1124 ASSERT(vhci != NULL); | |
| 1125 ASSERT(vpkt != NULL); | |
| 1126 ASSERT(vpkt->vpkt_state != VHCI_PKT_ISSUED); | |
| 1127 cdip = ADDR2DIP(ap); | |
| 1128 | |
| 1129 /* | |
| 1130 * Block IOs if LUN is held or QUIESCED for IOs. | |
| 1131 */ | |
| 1132 if ((VHCI_LUN_IS_HELD(vlun)) || | |
| 1133 ((vlun->svl_flags & VLUN_QUIESCED_FLG) == VLUN_QUIESCED_FLG)) { | |
| 1134 return (TRAN_BUSY); | |
| 1135 } | |
| 1136 | |
| 1137 /* | |
| 1138 * vhci_lun needs to be quiesced before SCSI-II RESERVE command | |
| 1139 * can be issued. This may require a cv_timedwait, which is | |
| 1140 * dangerous to perform in an interrupt context. So if this | |
| 1141 * is a RESERVE command a taskq is dispatched to service it. | |
| 1142 * This taskq shall again call vhci_scsi_start, but we shall be | |
| 1143 * sure its not in an interrupt context. | |
| 1144 */ | |
| 1145 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 1146 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 1147 if (!(vpkt->vpkt_state & VHCI_PKT_THRU_TASKQ)) { | |
| 1148 if (taskq_dispatch(vhci->vhci_taskq, | |
| 1149 vhci_dispatch_scsi_start, (void *) vpkt, | |
| 1150 KM_NOSLEEP)) { | |
| 1151 return (TRAN_ACCEPT); | |
| 1152 } else { | |
| 1153 return (TRAN_BUSY); | |
| 1154 } | |
| 1155 } | |
| 1156 | |
| 1157 /* | |
| 1158 * Here we ensure that simultaneous SCSI-II RESERVE cmds don't | |
| 1159 * get serviced for a lun. | |
| 1160 */ | |
| 1161 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 1162 if (!held) { | |
| 1163 return (TRAN_BUSY); | |
| 1164 } else if ((vlun->svl_flags & VLUN_QUIESCED_FLG) == | |
| 1165 VLUN_QUIESCED_FLG) { | |
| 1166 VHCI_RELEASE_LUN(vlun); | |
| 1167 return (TRAN_BUSY); | |
| 1168 } | |
| 1169 | |
| 1170 /* | |
| 1171 * To ensure that no IOs occur for this LUN for the duration | |
| 1172 * of this pkt set the VLUN_QUIESCED_FLG. | |
| 1173 * In case this routine needs to exit on error make sure that | |
| 1174 * this flag is cleared. | |
| 1175 */ | |
| 1176 vlun->svl_flags |= VLUN_QUIESCED_FLG; | |
| 1177 pkt_reserve_cmd = 1; | |
| 1178 | |
| 1179 /* | |
| 1180 * if this is a SCSI-II RESERVE command, set load balancing | |
| 1181 * policy to be ALTERNATE PATH to ensure that all subsequent | |
| 1182 * IOs are routed on the same path. This is because if commands | |
| 1183 * are routed across multiple paths then IOs on paths other than | |
| 1184 * the one on which the RESERVE was executed will get a | |
| 1185 * RESERVATION CONFLICT | |
| 1186 */ | |
| 1187 lbp = mdi_get_lb_policy(cdip); | |
| 1188 if (lbp != LOAD_BALANCE_NONE) { | |
| 1189 if (vhci_quiesce_lun(vlun) != 1) { | |
| 1190 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1191 VHCI_RELEASE_LUN(vlun); | |
| 1192 return (TRAN_FATAL_ERROR); | |
| 1193 } | |
| 1194 vlun->svl_lb_policy_save = lbp; | |
| 1195 if (mdi_set_lb_policy(cdip, LOAD_BALANCE_NONE) != | |
| 1196 MDI_SUCCESS) { | |
| 1197 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1198 VHCI_RELEASE_LUN(vlun); | |
| 1199 return (TRAN_FATAL_ERROR); | |
| 1200 } | |
| 1201 restore_lbp = 1; | |
| 1202 } | |
| 1203 /* | |
| 1204 * See comments for VLUN_RESERVE_ACTIVE_FLG in scsi_vhci.h | |
| 1205 * To narrow this window where a reserve command may be sent | |
| 1206 * down an inactive path the path states first need to be | |
| 1207 * updated. Before calling vhci_update_pathstates reset | |
| 1208 * VLUN_RESERVE_ACTIVE_FLG, just in case it was already set | |
| 1209 * for this lun. This shall prevent an unnecessary reset | |
| 1210 * from being sent out. | |
| 1211 */ | |
| 1212 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 1213 vhci_update_pathstates((void *)vlun); | |
| 1214 } | |
| 1215 | |
| 1216 instance = ddi_get_instance(vhci->vhci_dip); | |
| 1217 | |
| 1218 /* | |
| 1219 * If the command is PRIN with action of zero, then the cmd | |
| 1220 * is reading PR keys which requires filtering on completion. | |
| 1221 * Data cache sync must be guaranteed. | |
| 1222 */ | |
| 1223 if ((pkt->pkt_cdbp[0] == SCMD_PRIN) && | |
| 1224 (pkt->pkt_cdbp[1] == 0) && | |
| 1225 (vpkt->vpkt_org_vpkt == NULL)) { | |
| 1226 vpkt->vpkt_tgt_init_pkt_flags |= PKT_CONSISTENT; | |
| 1227 } | |
| 1228 | |
| 1229 /* | |
| 1230 * Do not defer bind for PKT_DMA_PARTIAL | |
| 1231 */ | |
| 1232 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1233 | |
| 1234 /* This is a non pkt_dma_partial case */ | |
| 1235 if ((rval = vhci_bind_transport( | |
| 1236 ap, vpkt, vpkt->vpkt_tgt_init_pkt_flags, NULL_FUNC)) | |
| 1237 != TRAN_ACCEPT) { | |
| 1238 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1239 "!vhci%d %x: failed to bind transport: " | |
| 1240 "vlun 0x%p pkt_reserved %x restore_lbp %x," | |
| 1241 "lbp %x", instance, rval, (void *)vlun, | |
| 1242 pkt_reserve_cmd, restore_lbp, lbp)); | |
| 1243 if (restore_lbp) | |
| 1244 (void) mdi_set_lb_policy(cdip, lbp); | |
| 1245 if (pkt_reserve_cmd) | |
| 1246 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1247 return (rval); | |
| 1248 } | |
| 1249 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1250 "vhci_scsi_start: v_b_t called 0x%p\n", (void *)vpkt)); | |
| 1251 } | |
| 1252 ASSERT(vpkt->vpkt_hba_pkt != NULL); | |
| 1253 ASSERT(vpkt->vpkt_path != NULL); | |
| 1254 | |
| 1255 /* | |
| 1256 * This is the chance to adjust the pHCI's pkt and other information | |
| 1257 * from target driver's pkt. | |
| 1258 */ | |
| 1259 VHCI_DEBUG(8, (CE_NOTE, vhci->vhci_dip, "vhci_scsi_start vpkt %p\n", | |
| 1260 (void *)vpkt)); | |
| 1261 vhci_update_pHCI_pkt(vpkt, pkt); | |
| 1262 | |
| 1263 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 1264 if (vpkt->vpkt_path != vlun->svl_resrv_pip) { | |
| 1265 VHCI_DEBUG(1, (CE_WARN, vhci->vhci_dip, | |
| 1266 "!vhci_bind: reserve flag set for vlun 0x%p, but, " | |
| 1267 "pktpath 0x%p resrv path 0x%p differ. lb_policy %x", | |
| 1268 (void *)vlun, (void *)vpkt->vpkt_path, | |
| 1269 (void *)vlun->svl_resrv_pip, | |
| 1270 mdi_get_lb_policy(cdip))); | |
| 1271 reserve_failed = 1; | |
| 1272 } | |
| 1273 } | |
| 1274 | |
| 1275 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private( | |
| 1276 vpkt->vpkt_path); | |
| 1277 if (svp == NULL || reserve_failed) { | |
| 1278 if (pkt_reserve_cmd) { | |
| 1279 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1280 "!vhci_bind returned null svp vlun 0x%p", | |
| 1281 (void *)vlun)); | |
| 1282 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1283 if (restore_lbp) | |
| 1284 (void) mdi_set_lb_policy(cdip, lbp); | |
| 1285 } | |
| 1286 pkt_cleanup: | |
| 1287 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1288 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1289 vpkt->vpkt_hba_pkt = NULL; | |
| 1290 if (vpkt->vpkt_path) { | |
| 1291 mdi_rele_path(vpkt->vpkt_path); | |
| 1292 vpkt->vpkt_path = NULL; | |
| 1293 } | |
| 1294 } | |
| 1295 if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 1296 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
| 1297 ((pkt->pkt_cdbp[1] & 0x1f) == | |
| 1298 VHCI_PROUT_R_AND_IGNORE))) { | |
| 1299 sema_v(&vlun->svl_pgr_sema); | |
| 1300 } | |
| 1301 return (TRAN_BUSY); | |
| 1302 } | |
| 1303 | |
| 1304 VHCI_INCR_PATH_CMDCOUNT(svp); | |
| 1305 | |
| 1306 /* | |
| 1307 * Ensure that no other IOs raced ahead, while a RESERVE cmd was | |
| 1308 * QUIESCING the same lun. | |
| 1309 */ | |
| 1310 if ((!pkt_reserve_cmd) && | |
| 1311 ((vlun->svl_flags & VLUN_QUIESCED_FLG) == VLUN_QUIESCED_FLG)) { | |
| 1312 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 1313 goto pkt_cleanup; | |
| 1314 } | |
| 1315 | |
| 1316 if ((pkt->pkt_cdbp[0] == SCMD_PRIN) || | |
| 1317 (pkt->pkt_cdbp[0] == SCMD_PROUT)) { | |
| 1318 /* | |
| 1319 * currently this thread only handles running PGR | |
| 1320 * commands, so don't bother creating it unless | |
| 1321 * something interesting is going to happen (like | |
| 1322 * either a PGR out, or a PGR in with enough space | |
| 1323 * to hold the keys that are getting returned) | |
| 1324 */ | |
| 1325 mutex_enter(&vlun->svl_mutex); | |
| 1326 if (((vlun->svl_flags & VLUN_TASK_D_ALIVE_FLG) == 0) && | |
| 1327 (pkt->pkt_cdbp[0] == SCMD_PROUT)) { | |
| 1328 vlun->svl_taskq = taskq_create("vlun_pgr_task_daemon", | |
| 1329 1, MINCLSYSPRI, 1, 4, 0); | |
| 1330 vlun->svl_flags |= VLUN_TASK_D_ALIVE_FLG; | |
| 1331 } | |
| 1332 mutex_exit(&vlun->svl_mutex); | |
| 1333 if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 1334 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
| 1335 ((pkt->pkt_cdbp[1] & 0x1f) == | |
| 1336 VHCI_PROUT_R_AND_IGNORE))) { | |
| 1337 if (rval = vhci_pgr_register_start(vlun, pkt)) { | |
| 1338 /* an error */ | |
| 1339 sema_v(&vlun->svl_pgr_sema); | |
| 1340 return (rval); | |
| 1341 } | |
| 1342 } | |
| 1343 } | |
| 1344 | |
| 1345 /* | |
| 1346 * SCSI-II RESERVE cmd is not expected in polled mode. | |
| 1347 * If this changes it needs to be handled for the polled scenario. | |
| 1348 */ | |
| 1349 flags = vpkt->vpkt_hba_pkt->pkt_flags; | |
| 1350 rval = scsi_transport(vpkt->vpkt_hba_pkt); | |
| 1351 if (rval == TRAN_ACCEPT) { | |
| 1352 if (flags & FLAG_NOINTR) { | |
| 1353 struct scsi_pkt *tpkt = vpkt->vpkt_tgt_pkt; | |
| 1354 struct scsi_pkt *pkt = vpkt->vpkt_hba_pkt; | |
| 1355 | |
| 1356 ASSERT(tpkt != NULL); | |
| 1357 *(tpkt->pkt_scbp) = *(pkt->pkt_scbp); | |
| 1358 tpkt->pkt_resid = pkt->pkt_resid; | |
| 1359 tpkt->pkt_state = pkt->pkt_state; | |
| 1360 tpkt->pkt_statistics = pkt->pkt_statistics; | |
| 1361 tpkt->pkt_reason = pkt->pkt_reason; | |
| 1362 | |
| 1363 if ((*(pkt->pkt_scbp) == STATUS_CHECK) && | |
| 1364 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 1365 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 1366 vpkt->vpkt_tgt_init_scblen); | |
| 1367 } | |
| 1368 | |
| 1369 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 1370 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1371 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1372 vpkt->vpkt_hba_pkt = NULL; | |
| 1373 if (vpkt->vpkt_path) { | |
| 1374 mdi_rele_path(vpkt->vpkt_path); | |
| 1375 vpkt->vpkt_path = NULL; | |
| 1376 } | |
| 1377 } | |
| 1378 /* | |
| 1379 * This path will not automatically retry pkts | |
| 1380 * internally, therefore, vpkt_org_vpkt should | |
| 1381 * never be set. | |
| 1382 */ | |
| 1383 ASSERT(vpkt->vpkt_org_vpkt == NULL); | |
| 1384 if (tpkt->pkt_comp) { | |
| 1385 (*tpkt->pkt_comp)(tpkt); | |
| 1386 } | |
| 1387 } | |
| 1388 return (rval); | |
| 1389 } else if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 1390 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
| 1391 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE))) { | |
| 1392 /* the command exited with bad status */ | |
| 1393 sema_v(&vlun->svl_pgr_sema); | |
| 1394 } else if (vpkt->vpkt_tgt_pkt->pkt_cdbp[0] == SCMD_PRIN) { | |
| 1395 /* the command exited with bad status */ | |
| 1396 sema_v(&vlun->svl_pgr_sema); | |
| 1397 } else if (pkt_reserve_cmd) { | |
| 1398 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1399 "!vhci_scsi_start: reserve failed vlun 0x%p", | |
| 1400 (void *)vlun)); | |
| 1401 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1402 if (restore_lbp) | |
| 1403 (void) mdi_set_lb_policy(cdip, lbp); | |
| 1404 } | |
| 1405 | |
| 1406 ASSERT(vpkt->vpkt_hba_pkt != NULL); | |
| 1407 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 1408 | |
| 1409 /* Do not destroy phci packet information for PKT_DMA_PARTIAL */ | |
| 1410 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1411 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1412 vpkt->vpkt_hba_pkt = NULL; | |
| 1413 if (vpkt->vpkt_path) { | |
| 1414 MDI_PI_ERRSTAT(vpkt->vpkt_path, MDI_PI_TRANSERR); | |
| 1415 mdi_rele_path(vpkt->vpkt_path); | |
| 1416 vpkt->vpkt_path = NULL; | |
| 1417 } | |
| 1418 } | |
| 1419 return (TRAN_BUSY); | |
| 1420 } | |
| 1421 | |
| 1422 /* | |
| 1423 * Function name : vhci_scsi_reset() | |
| 1424 * | |
| 1425 * Return Values : 0 - reset failed | |
| 1426 * 1 - reset succeeded | |
| 1427 */ | |
| 1428 | |
| 1429 /* ARGSUSED */ | |
| 1430 static int | |
| 1431 vhci_scsi_reset(struct scsi_address *ap, int level) | |
| 1432 { | |
| 1433 int rval = 0; | |
| 1434 | |
| 1435 cmn_err(CE_WARN, "!vhci_scsi_reset 0x%x", level); | |
| 1436 if ((level == RESET_TARGET) || (level == RESET_LUN)) { | |
| 1437 return (vhci_scsi_reset_target(ap, level, TRUE)); | |
| 1438 } else if (level == RESET_ALL) { | |
| 1439 return (vhci_scsi_reset_bus(ap)); | |
| 1440 } | |
| 1441 | |
| 1442 return (rval); | |
| 1443 } | |
| 1444 | |
| 1445 /* | |
| 1446 * vhci_recovery_reset: | |
| 1447 * Issues reset to the device | |
| 1448 * Input: | |
| 1449 * vlun - vhci lun pointer of the device | |
| 1450 * ap - address of the device | |
| 1451 * select_path: | |
| 1452 * If select_path is FALSE, then the address specified in ap is | |
| 1453 * the path on which reset will be issued. | |
| 1454 * If select_path is TRUE, then path is obtained by calling | |
| 1455 * mdi_select_path. | |
| 1456 * | |
| 1457 * recovery_depth: | |
| 1458 * Caller can specify the level of reset. | |
| 1459 * VHCI_DEPTH_LUN - | |
| 1460 * Issues LUN RESET if device supports lun reset. | |
| 1461 * VHCI_DEPTH_TARGET - | |
| 1462 * If Lun Reset fails or the device does not support | |
| 1463 * Lun Reset, issues TARGET RESET | |
| 1464 * VHCI_DEPTH_ALL - | |
| 1465 * If Lun Reset fails or the device does not support | |
| 1466 * Lun Reset, issues TARGET RESET. | |
| 1467 * If TARGET RESET does not succeed, issues Bus Reset. | |
| 1468 */ | |
| 1469 | |
| 1470 static int | |
| 1471 vhci_recovery_reset(scsi_vhci_lun_t *vlun, struct scsi_address *ap, | |
| 1472 uint8_t select_path, uint8_t recovery_depth) | |
| 1473 { | |
| 1474 int ret = 0; | |
| 1475 | |
| 1476 ASSERT(ap != NULL); | |
| 1477 | |
| 1478 if (vlun && vlun->svl_support_lun_reset == 1) { | |
| 1479 ret = vhci_scsi_reset_target(ap, RESET_LUN, | |
| 1480 select_path); | |
| 1481 } | |
| 1482 | |
| 1483 recovery_depth--; | |
| 1484 | |
| 1485 if ((ret == 0) && recovery_depth) { | |
| 1486 ret = vhci_scsi_reset_target(ap, RESET_TARGET, | |
| 1487 select_path); | |
| 1488 recovery_depth--; | |
| 1489 } | |
| 1490 | |
| 1491 if ((ret == 0) && recovery_depth) { | |
| 1492 (void) scsi_reset(ap, RESET_ALL); | |
| 1493 } | |
| 1494 | |
| 1495 return (ret); | |
| 1496 } | |
| 1497 | |
| 1498 /* | |
| 1499 * Note: The scsi_address passed to this routine could be the scsi_address | |
| 1500 * for the virtual device or the physical device. No assumptions should be | |
| 1501 * made in this routine about the ap structure and a_hba_tran->tran_tgt_private | |
| 1502 * field of ap can not be assumed to be the vhci structure. | |
| 1503 * Further note that the child dip would be the dip of the ssd node irrespective | |
| 1504 * of the scsi_address passed. | |
| 1505 */ | |
| 1506 | |
| 1507 static int | |
| 1508 vhci_scsi_reset_target(struct scsi_address *ap, int level, uint8_t select_path) | |
| 1509 { | |
| 1510 dev_info_t *vdip, *pdip, *cdip = ADDR2DIP(ap); | |
| 1511 mdi_pathinfo_t *pip = NULL; | |
| 1512 mdi_pathinfo_t *npip = NULL; | |
| 1513 int rval = -1; | |
| 1514 scsi_vhci_priv_t *svp = NULL; | |
| 1515 struct scsi_address *pap = NULL; | |
| 1516 scsi_hba_tran_t *hba = NULL; | |
| 1517 int sps; | |
| 1518 struct scsi_vhci *vhci = NULL; | |
| 1519 | |
| 1520 if (select_path != TRUE) { | |
| 1521 ASSERT(ap != NULL); | |
| 1522 if (level == RESET_LUN) { | |
| 1523 hba = ap->a_hba_tran; | |
| 1524 ASSERT(hba != NULL); | |
| 1525 return ((*hba->tran_reset)(ap, RESET_LUN)); | |
| 1526 } | |
| 1527 return (scsi_reset(ap, level)); | |
| 1528 } | |
| 1529 | |
| 1530 ASSERT(cdip != NULL); | |
| 1531 vdip = ddi_get_parent(cdip); | |
| 1532 ASSERT(vdip != NULL); | |
| 1533 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 1534 ASSERT(vhci != NULL); | |
| 1535 | |
| 1536 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, NULL, &pip); | |
| 1537 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 1538 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_scsi_reset_target: " | |
| 1539 "Unable to get a path, dip 0x%p", (void *)cdip)); | |
| 1540 return (0); | |
| 1541 } | |
| 1542 again: | |
| 1543 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 1544 if (svp == NULL) { | |
| 1545 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_scsi_reset_target: " | |
| 1546 "priv is NULL, pip 0x%p", (void *)pip)); | |
| 1547 mdi_rele_path(pip); | |
| 1548 return (0); | |
| 1549 } | |
| 1550 | |
| 1551 if (svp->svp_psd == NULL) { | |
| 1552 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_scsi_reset_target: " | |
| 1553 "psd is NULL, pip 0x%p, svp 0x%p", | |
| 1554 (void *)pip, (void *)svp)); | |
| 1555 mdi_rele_path(pip); | |
| 1556 return (0); | |
| 1557 } | |
| 1558 | |
| 1559 pap = &svp->svp_psd->sd_address; | |
| 1560 hba = pap->a_hba_tran; | |
| 1561 | |
| 1562 ASSERT(pap != NULL); | |
| 1563 ASSERT(hba != NULL); | |
| 1564 | |
| 1565 if (hba->tran_reset != NULL) { | |
| 1566 if ((*hba->tran_reset)(pap, level) == 0) { | |
| 1567 pdip = mdi_pi_get_phci(pip); | |
| 1568 vhci_log(CE_WARN, vdip, "!(%s%d):" | |
| 1569 " path (%s%d), reset %d failed", | |
| 1570 ddi_driver_name(cdip), ddi_get_instance(cdip), | |
| 1571 ddi_driver_name(pdip), ddi_get_instance(pdip), | |
| 1572 level); | |
| 1573 | |
| 1574 /* | |
| 1575 * Select next path and issue the reset, repeat | |
| 1576 * until all paths are exhausted | |
| 1577 */ | |
| 1578 sps = mdi_select_path(cdip, NULL, | |
| 1579 MDI_SELECT_ONLINE_PATH, pip, &npip); | |
| 1580 if ((sps != MDI_SUCCESS) || (npip == NULL)) { | |
| 1581 mdi_rele_path(pip); | |
| 1582 return (0); | |
| 1583 } | |
| 1584 mdi_rele_path(pip); | |
| 1585 pip = npip; | |
| 1586 goto again; | |
| 1587 } | |
| 1588 mdi_rele_path(pip); | |
| 1589 mutex_enter(&vhci->vhci_mutex); | |
| 1590 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
| 1591 &vhci->vhci_reset_notify_listf); | |
| 1592 mutex_exit(&vhci->vhci_mutex); | |
| 1593 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_scsi_reset_target: " | |
| 1594 "reset %d sent down pip:%p for cdip:%p\n", level, | |
| 1595 (void *)pip, (void *)cdip)); | |
| 1596 return (1); | |
| 1597 } | |
| 1598 mdi_rele_path(pip); | |
| 1599 return (0); | |
| 1600 } | |
| 1601 | |
| 1602 | |
| 1603 /* ARGSUSED */ | |
| 1604 static int | |
| 1605 vhci_scsi_reset_bus(struct scsi_address *ap) | |
| 1606 { | |
| 1607 return (1); | |
| 1608 } | |
| 1609 | |
| 1610 | |
| 1611 /* | |
| 1612 * called by vhci_getcap and vhci_setcap to get and set (respectively) | |
| 1613 * SCSI capabilities | |
| 1614 */ | |
| 1615 /* ARGSUSED */ | |
| 1616 static int | |
| 1617 vhci_commoncap(struct scsi_address *ap, char *cap, | |
| 1618 int val, int tgtonly, int doset) | |
| 1619 { | |
| 1620 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 1621 struct scsi_vhci_lun *vlun = ADDR2VLUN(ap); | |
| 1622 int cidx; | |
| 1623 int rval = 0; | |
| 1624 | |
| 1625 if (cap == (char *)0) { | |
| 1626 VHCI_DEBUG(3, (CE_WARN, vhci->vhci_dip, | |
| 1627 "!vhci_commoncap: invalid arg")); | |
| 1628 return (rval); | |
| 1629 } | |
| 1630 | |
|
4882
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1631 if (vlun == NULL) { |
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1632 VHCI_DEBUG(3, (CE_WARN, vhci->vhci_dip, |
|
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1633 "!vhci_commoncap: vlun is null")); |
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1634 return (rval); |
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1635 } |
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1636 |
| 4851 | 1637 if ((cidx = scsi_hba_lookup_capstr(cap)) == -1) { |
| 1638 return (UNDEFINED); | |
| 1639 } | |
| 1640 | |
| 1641 /* | |
| 1642 * Process setcap request. | |
| 1643 */ | |
| 1644 if (doset) { | |
| 1645 /* | |
| 1646 * At present, we can only set binary (0/1) values | |
| 1647 */ | |
| 1648 switch (cidx) { | |
| 1649 case SCSI_CAP_ARQ: | |
| 1650 if (val == 0) { | |
| 1651 rval = 0; | |
| 1652 } else { | |
| 1653 rval = 1; | |
| 1654 } | |
| 1655 break; | |
| 1656 | |
| 1657 case SCSI_CAP_LUN_RESET: | |
| 1658 if (tgtonly == 0) { | |
| 1659 VHCI_DEBUG(1, (CE_WARN, vhci->vhci_dip, | |
| 1660 "scsi_vhci_setcap: " | |
| 1661 "Returning error since whom = 0")); | |
| 1662 rval = -1; | |
| 1663 break; | |
| 1664 } | |
| 1665 /* | |
| 1666 * Set the capability accordingly. | |
| 1667 */ | |
| 1668 mutex_enter(&vlun->svl_mutex); | |
| 1669 vlun->svl_support_lun_reset = val; | |
| 1670 rval = val; | |
| 1671 mutex_exit(&vlun->svl_mutex); | |
| 1672 break; | |
| 1673 | |
| 1674 case SCSI_CAP_SECTOR_SIZE: | |
| 1675 mutex_enter(&vlun->svl_mutex); | |
| 1676 vlun->svl_sector_size = val; | |
| 1677 vlun->svl_setcap_done = 1; | |
| 1678 mutex_exit(&vlun->svl_mutex); | |
| 1679 (void) vhci_pHCI_cap(ap, cap, val, tgtonly, NULL); | |
| 1680 | |
| 1681 /* Always return success */ | |
| 1682 rval = 1; | |
| 1683 break; | |
| 1684 | |
| 1685 default: | |
| 1686 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1687 "!vhci_setcap: unsupported %d", cidx)); | |
| 1688 rval = UNDEFINED; | |
| 1689 break; | |
| 1690 } | |
| 1691 | |
| 1692 VHCI_DEBUG(6, (CE_NOTE, vhci->vhci_dip, | |
| 1693 "!set cap: cap=%s, val/tgtonly/doset/rval = " | |
| 1694 "0x%x/0x%x/0x%x/%d\n", | |
| 1695 cap, val, tgtonly, doset, rval)); | |
| 1696 | |
| 1697 } else { | |
| 1698 /* | |
| 1699 * Process getcap request. | |
| 1700 */ | |
| 1701 switch (cidx) { | |
| 1702 case SCSI_CAP_DMA_MAX: | |
| 1703 rval = (int)VHCI_DMA_MAX_XFER_CAP; | |
| 1704 break; | |
| 1705 | |
| 1706 case SCSI_CAP_INITIATOR_ID: | |
| 1707 rval = 0x00; | |
| 1708 break; | |
| 1709 | |
| 1710 case SCSI_CAP_ARQ: | |
| 1711 case SCSI_CAP_RESET_NOTIFICATION: | |
| 1712 case SCSI_CAP_TAGGED_QING: | |
| 1713 rval = 1; | |
| 1714 break; | |
| 1715 | |
| 1716 case SCSI_CAP_SCSI_VERSION: | |
| 1717 rval = 3; | |
| 1718 break; | |
| 1719 | |
| 1720 case SCSI_CAP_INTERCONNECT_TYPE: | |
| 1721 rval = INTERCONNECT_FABRIC; | |
| 1722 break; | |
| 1723 | |
| 1724 case SCSI_CAP_LUN_RESET: | |
| 1725 /* | |
| 1726 * scsi_vhci will always return success for LUN reset. | |
| 1727 * When request for doing LUN reset comes | |
| 1728 * through scsi_reset entry point, at that time attempt | |
| 1729 * will be made to do reset through all the possible | |
| 1730 * paths. | |
| 1731 */ | |
| 1732 mutex_enter(&vlun->svl_mutex); | |
| 1733 rval = vlun->svl_support_lun_reset; | |
| 1734 mutex_exit(&vlun->svl_mutex); | |
| 1735 VHCI_DEBUG(4, (CE_WARN, vhci->vhci_dip, | |
| 1736 "scsi_vhci_getcap:" | |
| 1737 "Getting the Lun reset capability %d", rval)); | |
| 1738 break; | |
| 1739 | |
| 1740 case SCSI_CAP_SECTOR_SIZE: | |
| 1741 mutex_enter(&vlun->svl_mutex); | |
| 1742 rval = vlun->svl_sector_size; | |
| 1743 mutex_exit(&vlun->svl_mutex); | |
| 1744 break; | |
| 1745 | |
| 1746 default: | |
| 1747 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1748 "!vhci_getcap: unsupported %d", cidx)); | |
| 1749 rval = UNDEFINED; | |
| 1750 break; | |
| 1751 } | |
| 1752 | |
| 1753 VHCI_DEBUG(6, (CE_NOTE, vhci->vhci_dip, | |
| 1754 "!get cap: cap=%s, val/tgtonly/doset/rval = " | |
| 1755 "0x%x/0x%x/0x%x/%d\n", | |
| 1756 cap, val, tgtonly, doset, rval)); | |
| 1757 } | |
| 1758 return (rval); | |
| 1759 } | |
| 1760 | |
| 1761 | |
| 1762 /* | |
| 1763 * Function name : vhci_scsi_getcap() | |
| 1764 * | |
| 1765 */ | |
| 1766 static int | |
| 1767 vhci_scsi_getcap(struct scsi_address *ap, char *cap, int whom) | |
| 1768 { | |
| 1769 return (vhci_commoncap(ap, cap, 0, whom, 0)); | |
| 1770 } | |
| 1771 | |
| 1772 static int | |
| 1773 vhci_scsi_setcap(struct scsi_address *ap, char *cap, int value, int whom) | |
| 1774 { | |
| 1775 return (vhci_commoncap(ap, cap, value, whom, 1)); | |
| 1776 } | |
| 1777 | |
| 1778 /* | |
| 1779 * Function name : vhci_scsi_abort() | |
| 1780 */ | |
| 1781 /* ARGSUSED */ | |
| 1782 static int | |
| 1783 vhci_scsi_abort(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1784 { | |
| 1785 return (0); | |
| 1786 } | |
| 1787 | |
| 1788 /* | |
| 1789 * Function name : vhci_scsi_init_pkt | |
| 1790 * | |
| 1791 * Return Values : pointer to scsi_pkt, or NULL | |
| 1792 */ | |
| 1793 /* ARGSUSED */ | |
| 1794 static struct scsi_pkt * | |
| 1795 vhci_scsi_init_pkt(struct scsi_address *ap, struct scsi_pkt *pkt, | |
| 1796 struct buf *bp, int cmdlen, int statuslen, int tgtlen, | |
| 1797 int flags, int (*callback)(caddr_t), caddr_t arg) | |
| 1798 { | |
| 1799 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 1800 struct vhci_pkt *vpkt; | |
| 1801 int rval; | |
| 1802 int newpkt = 0; | |
| 1803 struct scsi_pkt *pktp; | |
| 1804 | |
| 1805 | |
| 1806 if (pkt == NULL) { | |
| 1807 if (cmdlen > VHCI_SCSI_CDB_SIZE) { | |
| 1808 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 1809 "!init pkt: cdb size not supported\n")); | |
| 1810 return (NULL); | |
| 1811 } | |
| 1812 | |
| 1813 pktp = scsi_hba_pkt_alloc(vhci->vhci_dip, | |
| 1814 ap, cmdlen, statuslen, tgtlen, sizeof (*vpkt), callback, | |
| 1815 arg); | |
| 1816 | |
| 1817 if (pktp == NULL) { | |
| 1818 return (NULL); | |
| 1819 } | |
| 1820 | |
| 1821 /* Get the vhci's private structure */ | |
| 1822 vpkt = (struct vhci_pkt *)(pktp->pkt_ha_private); | |
| 1823 ASSERT(vpkt); | |
| 1824 | |
| 1825 /* Save the target driver's packet */ | |
| 1826 vpkt->vpkt_tgt_pkt = pktp; | |
| 1827 | |
| 1828 /* | |
| 1829 * Save pkt_tgt_init_pkt fields if deferred binding | |
| 1830 * is needed or for other purposes. | |
| 1831 */ | |
| 1832 vpkt->vpkt_tgt_init_pkt_flags = flags; | |
| 1833 vpkt->vpkt_flags = (callback == NULL_FUNC) ? CFLAG_NOWAIT : 0; | |
| 1834 vpkt->vpkt_state = VHCI_PKT_IDLE; | |
| 1835 vpkt->vpkt_tgt_init_cdblen = cmdlen; | |
| 1836 vpkt->vpkt_tgt_init_scblen = statuslen; | |
| 1837 vpkt->vpkt_tgt_init_privlen = tgtlen; | |
| 1838 newpkt = 1; | |
| 1839 } else { /* pkt not NULL */ | |
| 1840 vpkt = pkt->pkt_ha_private; | |
| 1841 } | |
| 1842 | |
| 1843 VHCI_DEBUG(8, (CE_NOTE, NULL, "vhci_scsi_init_pkt " | |
| 1844 "vpkt %p flags %x\n", (void *)vpkt, flags)); | |
| 1845 | |
| 1846 /* Clear any stale error flags */ | |
| 1847 if (bp) { | |
| 1848 bioerror(bp, 0); | |
| 1849 } | |
| 1850 | |
| 1851 vpkt->vpkt_tgt_init_bp = bp; | |
| 1852 | |
| 1853 if (flags & PKT_DMA_PARTIAL) { | |
| 1854 | |
| 1855 /* | |
| 1856 * Immediate binding is needed. | |
| 1857 * Target driver may not set this flag in next invocation. | |
| 1858 * vhci has to remember this flag was set during first | |
| 1859 * invocation of vhci_scsi_init_pkt. | |
| 1860 */ | |
| 1861 vpkt->vpkt_flags |= CFLAG_DMA_PARTIAL; | |
| 1862 } | |
| 1863 | |
| 1864 if (vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) { | |
| 1865 | |
| 1866 /* | |
| 1867 * Re-initialize some of the target driver packet state | |
| 1868 * information. | |
| 1869 */ | |
| 1870 vpkt->vpkt_tgt_pkt->pkt_state = 0; | |
| 1871 vpkt->vpkt_tgt_pkt->pkt_statistics = 0; | |
| 1872 vpkt->vpkt_tgt_pkt->pkt_reason = 0; | |
| 1873 | |
| 1874 /* | |
| 1875 * Binding a vpkt->vpkt_path for this IO at init_time. | |
| 1876 * If an IO error happens later, target driver will clear | |
| 1877 * this vpkt->vpkt_path binding before re-init IO again. | |
| 1878 */ | |
| 1879 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1880 "vhci_scsi_init_pkt: calling v_b_t %p, newpkt %d\n", | |
| 1881 (void *)vpkt, newpkt)); | |
| 1882 if (pkt && vpkt->vpkt_hba_pkt) { | |
| 1883 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 1884 "v_s_i_p calling update_pHCI_pkt resid %ld\n", | |
| 1885 pkt->pkt_resid)); | |
| 1886 vhci_update_pHCI_pkt(vpkt, pkt); | |
| 1887 } | |
| 1888 if (callback == SLEEP_FUNC) { | |
| 1889 rval = vhci_bind_transport( | |
| 1890 ap, vpkt, flags, callback); | |
| 1891 } else { | |
| 1892 rval = vhci_bind_transport( | |
| 1893 ap, vpkt, flags, NULL_FUNC); | |
| 1894 } | |
| 1895 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1896 "vhci_scsi_init_pkt: v_b_t called 0x%p rval 0x%x\n", | |
| 1897 (void *)vpkt, rval)); | |
| 1898 if (bp) { | |
| 1899 if (rval == TRAN_FATAL_ERROR) { | |
| 1900 /* | |
| 1901 * No paths available. Could not bind | |
| 1902 * any pHCI. Setting EFAULT as a way | |
| 1903 * to indicate no DMA is mapped. | |
| 1904 */ | |
| 1905 bioerror(bp, EFAULT); | |
| 1906 } else { | |
| 1907 /* | |
| 1908 * Do not indicate any pHCI errors to | |
| 1909 * target driver otherwise. | |
| 1910 */ | |
| 1911 bioerror(bp, 0); | |
| 1912 } | |
| 1913 } | |
| 1914 if (rval != TRAN_ACCEPT) { | |
| 1915 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1916 "vhci_scsi_init_pkt: " | |
| 1917 "v_b_t failed 0x%p newpkt %x\n", | |
| 1918 (void *)vpkt, newpkt)); | |
| 1919 if (newpkt) { | |
| 1920 scsi_hba_pkt_free(ap, | |
| 1921 vpkt->vpkt_tgt_pkt); | |
| 1922 } | |
| 1923 return (NULL); | |
| 1924 } | |
| 1925 ASSERT(vpkt->vpkt_hba_pkt != NULL); | |
| 1926 ASSERT(vpkt->vpkt_path != NULL); | |
| 1927 | |
| 1928 /* Update the resid for the target driver */ | |
| 1929 vpkt->vpkt_tgt_pkt->pkt_resid = | |
| 1930 vpkt->vpkt_hba_pkt->pkt_resid; | |
| 1931 } | |
| 1932 | |
| 1933 return (vpkt->vpkt_tgt_pkt); | |
| 1934 } | |
| 1935 | |
| 1936 /* | |
| 1937 * Function name : vhci_scsi_destroy_pkt | |
| 1938 * | |
| 1939 * Return Values : none | |
| 1940 */ | |
| 1941 static void | |
| 1942 vhci_scsi_destroy_pkt(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1943 { | |
| 1944 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_ha_private; | |
| 1945 | |
| 1946 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1947 "vhci_scsi_destroy_pkt: vpkt 0x%p\n", (void *)vpkt)); | |
| 1948 | |
| 1949 vpkt->vpkt_tgt_init_pkt_flags = 0; | |
| 1950 if (vpkt->vpkt_hba_pkt) { | |
| 1951 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1952 vpkt->vpkt_hba_pkt = NULL; | |
| 1953 } | |
| 1954 if (vpkt->vpkt_path) { | |
| 1955 mdi_rele_path(vpkt->vpkt_path); | |
| 1956 vpkt->vpkt_path = NULL; | |
| 1957 } | |
| 1958 | |
| 1959 ASSERT(vpkt->vpkt_state != VHCI_PKT_ISSUED); | |
| 1960 scsi_hba_pkt_free(ap, vpkt->vpkt_tgt_pkt); | |
| 1961 } | |
| 1962 | |
| 1963 /* | |
| 1964 * Function name : vhci_scsi_dmafree() | |
| 1965 * | |
| 1966 * Return Values : none | |
| 1967 */ | |
| 1968 /*ARGSUSED*/ | |
| 1969 static void | |
| 1970 vhci_scsi_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1971 { | |
| 1972 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_ha_private; | |
| 1973 | |
| 1974 VHCI_DEBUG(6, (CE_NOTE, NULL, | |
| 1975 "vhci_scsi_dmafree: vpkt 0x%p\n", (void *)vpkt)); | |
| 1976 | |
| 1977 ASSERT(vpkt != NULL); | |
| 1978 if (vpkt->vpkt_hba_pkt) { | |
| 1979 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1980 vpkt->vpkt_hba_pkt = NULL; | |
| 1981 } | |
| 1982 if (vpkt->vpkt_path) { | |
| 1983 mdi_rele_path(vpkt->vpkt_path); | |
| 1984 vpkt->vpkt_path = NULL; | |
| 1985 } | |
| 1986 } | |
| 1987 | |
| 1988 /* | |
| 1989 * Function name : vhci_scsi_sync_pkt() | |
| 1990 * | |
| 1991 * Return Values : none | |
| 1992 */ | |
| 1993 /*ARGSUSED*/ | |
| 1994 static void | |
| 1995 vhci_scsi_sync_pkt(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1996 { | |
| 1997 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_ha_private; | |
| 1998 | |
| 1999 ASSERT(vpkt != NULL); | |
| 2000 if (vpkt->vpkt_hba_pkt) { | |
| 2001 scsi_sync_pkt(vpkt->vpkt_hba_pkt); | |
| 2002 } | |
| 2003 } | |
| 2004 | |
| 2005 /* | |
| 2006 * routine for reset notification setup, to register or cancel. | |
| 2007 */ | |
| 2008 static int | |
| 2009 vhci_scsi_reset_notify(struct scsi_address *ap, int flag, | |
| 2010 void (*callback)(caddr_t), caddr_t arg) | |
| 2011 { | |
| 2012 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 2013 return (scsi_hba_reset_notify_setup(ap, flag, callback, arg, | |
| 2014 &vhci->vhci_mutex, &vhci->vhci_reset_notify_listf)); | |
| 2015 } | |
| 2016 | |
| 2017 static int | |
| 2018 vhci_scsi_get_name_bus_addr(struct scsi_device *sd, | |
| 2019 char *name, int len, int bus_addr) | |
| 2020 { | |
| 2021 dev_info_t *cdip; | |
| 2022 char *guid; | |
| 2023 scsi_vhci_lun_t *vlun; | |
| 2024 | |
| 2025 ASSERT(sd != NULL); | |
| 2026 ASSERT(name != NULL); | |
| 2027 | |
| 2028 cdip = sd->sd_dev; | |
| 2029 | |
| 2030 ASSERT(cdip != NULL); | |
| 2031 | |
| 2032 if (mdi_component_is_client(cdip, NULL) != MDI_SUCCESS) { | |
| 2033 name[0] = '\0'; | |
| 2034 return (1); | |
| 2035 } | |
| 2036 | |
| 2037 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, cdip, PROPFLAGS, | |
| 2038 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 2039 name[0] = '\0'; | |
| 2040 return (1); | |
| 2041 } | |
| 2042 | |
| 2043 vlun = ADDR2VLUN(&sd->sd_address); | |
| 2044 if (bus_addr && vlun && vlun->svl_fops_name) { | |
| 2045 /* report the guid and the name of the failover module */ | |
| 2046 (void) snprintf(name, len, "g%s %s", guid, vlun->svl_fops_name); | |
| 2047 } else { | |
| 2048 /* report the guid */ | |
| 2049 (void) snprintf(name, len, "g%s", guid); | |
| 2050 } | |
| 2051 | |
| 2052 ddi_prop_free(guid); | |
| 2053 return (1); | |
| 2054 } | |
| 2055 | |
| 2056 static int | |
| 2057 vhci_scsi_get_bus_addr(struct scsi_device *sd, char *name, int len) | |
| 2058 { | |
| 2059 return (vhci_scsi_get_name_bus_addr(sd, name, len, 1)); | |
| 2060 } | |
| 2061 | |
| 2062 static int | |
| 2063 vhci_scsi_get_name(struct scsi_device *sd, char *name, int len) | |
| 2064 { | |
| 2065 return (vhci_scsi_get_name_bus_addr(sd, name, len, 0)); | |
| 2066 } | |
| 2067 | |
| 2068 /* | |
| 2069 * Return a pointer to the guid part of the devnm. | |
| 2070 * devnm format is "nodename@busaddr", busaddr format is "gGUID". | |
| 2071 */ | |
| 2072 static char * | |
| 2073 vhci_devnm_to_guid(char *devnm) | |
| 2074 { | |
| 2075 char *cp = devnm; | |
| 2076 | |
| 2077 if (devnm == NULL) | |
| 2078 return (NULL); | |
| 2079 | |
| 2080 while (*cp != '\0' && *cp != '@') | |
| 2081 cp++; | |
| 2082 if (*cp == '@' && *(cp + 1) == 'g') | |
| 2083 return (cp + 2); | |
| 2084 return (NULL); | |
| 2085 } | |
| 2086 | |
| 2087 static int | |
| 2088 vhci_bind_transport(struct scsi_address *ap, struct vhci_pkt *vpkt, int flags, | |
| 2089 int (*func)(caddr_t)) | |
| 2090 { | |
| 2091 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 2092 dev_info_t *cdip = ADDR2DIP(ap); | |
| 2093 mdi_pathinfo_t *pip = NULL; | |
| 2094 mdi_pathinfo_t *npip = NULL; | |
| 2095 scsi_vhci_priv_t *svp = NULL; | |
| 2096 struct scsi_device *psd = NULL; | |
| 2097 struct scsi_address *address = NULL; | |
| 2098 struct scsi_pkt *pkt = NULL; | |
| 2099 int rval = -1; | |
| 2100 int pgr_sema_held = 0; | |
| 2101 int held; | |
| 2102 int mps_flag = MDI_SELECT_ONLINE_PATH; | |
| 2103 struct scsi_vhci_lun *vlun; | |
| 2104 time_t tnow; | |
| 2105 | |
| 2106 vlun = ADDR2VLUN(ap); | |
| 2107 ASSERT(vlun != 0); | |
| 2108 | |
| 2109 if ((vpkt->vpkt_tgt_pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 2110 (((vpkt->vpkt_tgt_pkt->pkt_cdbp[1] & 0x1f) == | |
| 2111 VHCI_PROUT_REGISTER) || | |
| 2112 ((vpkt->vpkt_tgt_pkt->pkt_cdbp[1] & 0x1f) == | |
| 2113 VHCI_PROUT_R_AND_IGNORE))) { | |
| 2114 if (!sema_tryp(&vlun->svl_pgr_sema)) | |
| 2115 return (TRAN_BUSY); | |
| 2116 pgr_sema_held = 1; | |
| 2117 if (vlun->svl_first_path != NULL) { | |
| 2118 rval = mdi_select_path(cdip, NULL, | |
| 2119 MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH, | |
| 2120 NULL, &pip); | |
| 2121 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 2122 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2123 "vhci_bind_transport: path select fail\n")); | |
| 2124 } else { | |
| 2125 npip = pip; | |
| 2126 do { | |
| 2127 if (npip == vlun->svl_first_path) { | |
| 2128 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2129 "vhci_bind_transport: " | |
| 2130 "valid first path 0x%p\n", | |
| 2131 (void *) | |
| 2132 vlun->svl_first_path)); | |
| 2133 pip = vlun->svl_first_path; | |
| 2134 goto bind_path; | |
| 2135 } | |
| 2136 pip = npip; | |
| 2137 rval = mdi_select_path(cdip, NULL, | |
| 2138 MDI_SELECT_ONLINE_PATH | | |
| 2139 MDI_SELECT_STANDBY_PATH, | |
| 2140 pip, &npip); | |
| 2141 mdi_rele_path(pip); | |
| 2142 } while ((rval == MDI_SUCCESS) && | |
| 2143 (npip != NULL)); | |
| 2144 } | |
| 2145 } | |
| 2146 | |
| 2147 if (vlun->svl_first_path) { | |
| 2148 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2149 "vhci_bind_transport: invalid first path 0x%p\n", | |
| 2150 (void *)vlun->svl_first_path)); | |
| 2151 vlun->svl_first_path = NULL; | |
| 2152 } | |
| 2153 } else if (vpkt->vpkt_tgt_pkt->pkt_cdbp[0] == SCMD_PRIN) { | |
| 2154 if ((vpkt->vpkt_state & VHCI_PKT_THRU_TASKQ) == 0) { | |
| 2155 if (!sema_tryp(&vlun->svl_pgr_sema)) | |
| 2156 return (TRAN_BUSY); | |
| 2157 } | |
| 2158 pgr_sema_held = 1; | |
| 2159 } | |
| 2160 | |
| 2161 /* | |
| 2162 * If the path is already bound for PKT_PARTIAL_DMA case, | |
| 2163 * try to use the same path. | |
| 2164 */ | |
| 2165 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) && vpkt->vpkt_path) { | |
| 2166 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2167 "vhci_bind_transport: PKT_PARTIAL_DMA " | |
| 2168 "vpkt 0x%p, path 0x%p\n", | |
| 2169 (void *)vpkt, (void *)vpkt->vpkt_path)); | |
| 2170 pip = vpkt->vpkt_path; | |
| 2171 goto bind_path; | |
| 2172 } | |
| 2173 | |
| 2174 /* | |
| 2175 * If reservation is active bind the transport directly to the pip | |
| 2176 * with the reservation. | |
| 2177 */ | |
| 2178 if (vpkt->vpkt_hba_pkt == NULL) { | |
| 2179 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 2180 if (MDI_PI_IS_ONLINE(vlun->svl_resrv_pip)) { | |
| 2181 pip = vlun->svl_resrv_pip; | |
| 2182 mdi_hold_path(pip); | |
| 2183 vlun->svl_waiting_for_activepath = 0; | |
| 2184 rval = MDI_SUCCESS; | |
| 2185 goto bind_path; | |
| 2186 } else { | |
| 2187 if (pgr_sema_held) { | |
| 2188 sema_v(&vlun->svl_pgr_sema); | |
| 2189 } | |
| 2190 return (TRAN_BUSY); | |
| 2191 } | |
| 2192 } | |
| 2193 try_again: | |
| 2194 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, 0, NULL, | |
| 2195 &pip); | |
| 2196 if (rval == MDI_BUSY) { | |
| 2197 if (pgr_sema_held) { | |
| 2198 sema_v(&vlun->svl_pgr_sema); | |
| 2199 } | |
| 2200 return (TRAN_BUSY); | |
| 2201 } else if (rval == MDI_DEVI_ONLINING) { | |
| 2202 /* | |
| 2203 * if we are here then we are in the midst of | |
| 2204 * an attach/probe of the client device. | |
| 2205 * We attempt to bind to ONLINE path if available, | |
| 2206 * else it is OK to bind to a STANDBY path (instead | |
| 2207 * of triggering a failover) because IO associated | |
| 2208 * with attach/probe (eg. INQUIRY, block 0 read) | |
| 2209 * are completed by targets even on passive paths | |
| 2210 * If no ONLINE paths available, it is important | |
| 2211 * to set svl_waiting_for_activepath for two | |
| 2212 * reasons: (1) avoid sense analysis in the | |
| 2213 * "external failure detection" codepath in | |
| 2214 * vhci_intr(). Failure to do so will result in | |
| 2215 * infinite loop (unless an ONLINE path becomes | |
| 2216 * available at some point) (2) avoid | |
| 2217 * unnecessary failover (see "---Waiting For Active | |
| 2218 * Path---" comment below). | |
| 2219 */ | |
| 2220 VHCI_DEBUG(1, (CE_NOTE, NULL, "!%p in onlining " | |
| 2221 "state\n", (void *)cdip)); | |
| 2222 pip = NULL; | |
| 2223 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, | |
| 2224 mps_flag, NULL, &pip); | |
| 2225 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 2226 if (vlun->svl_waiting_for_activepath == 0) { | |
| 2227 vlun->svl_waiting_for_activepath = 1; | |
| 2228 vlun->svl_wfa_time = ddi_get_time(); | |
| 2229 } | |
| 2230 mps_flag |= MDI_SELECT_STANDBY_PATH; | |
| 2231 rval = mdi_select_path(cdip, | |
| 2232 vpkt->vpkt_tgt_init_bp, | |
| 2233 mps_flag, NULL, &pip); | |
| 2234 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 2235 if (pgr_sema_held) { | |
| 2236 sema_v(&vlun->svl_pgr_sema); | |
| 2237 } | |
| 2238 return (TRAN_FATAL_ERROR); | |
| 2239 } | |
| 2240 goto bind_path; | |
| 2241 } | |
| 2242 } else if (rval == MDI_FAILURE) { | |
| 2243 if (pgr_sema_held) { | |
| 2244 sema_v(&vlun->svl_pgr_sema); | |
| 2245 } | |
| 2246 return (TRAN_FATAL_ERROR); | |
| 2247 } | |
| 2248 | |
| 2249 if ((pip == NULL) || (rval == MDI_NOPATH)) { | |
| 2250 while (vlun->svl_waiting_for_activepath) { | |
| 2251 /* | |
| 2252 * ---Waiting For Active Path--- | |
| 2253 * This device was discovered across a | |
| 2254 * passive path; lets wait for a little | |
| 2255 * bit, hopefully an active path will | |
| 2256 * show up obviating the need for a | |
| 2257 * failover | |
| 2258 */ | |
| 2259 tnow = ddi_get_time(); | |
| 2260 if (tnow - vlun->svl_wfa_time >= 60) { | |
| 2261 vlun->svl_waiting_for_activepath = 0; | |
| 2262 } else { | |
| 2263 drv_usecwait(1000); | |
| 2264 if (vlun->svl_waiting_for_activepath | |
| 2265 == 0) { | |
| 2266 /* | |
| 2267 * an active path has come | |
| 2268 * online! | |
| 2269 */ | |
| 2270 goto try_again; | |
| 2271 } | |
| 2272 } | |
| 2273 } | |
| 2274 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 2275 if (!held) { | |
| 2276 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2277 "!Lun not held\n")); | |
| 2278 if (pgr_sema_held) { | |
| 2279 sema_v(&vlun->svl_pgr_sema); | |
| 2280 } | |
| 2281 return (TRAN_BUSY); | |
| 2282 } | |
| 2283 /* | |
| 2284 * now that the LUN is stable, one last check | |
| 2285 * to make sure no other changes sneaked in | |
| 2286 * (like a path coming online or a | |
| 2287 * failover initiated by another thread) | |
| 2288 */ | |
| 2289 pip = NULL; | |
| 2290 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, | |
| 2291 0, NULL, &pip); | |
| 2292 if (pip != NULL) { | |
| 2293 VHCI_RELEASE_LUN(vlun); | |
| 2294 vlun->svl_waiting_for_activepath = 0; | |
| 2295 goto bind_path; | |
| 2296 } | |
| 2297 | |
| 2298 /* | |
| 2299 * Check if there is an ONLINE path OR a STANDBY path | |
| 2300 * available. If none is available, do not attempt | |
| 2301 * to do a failover, just return a fatal error at this | |
| 2302 * point. | |
| 2303 */ | |
| 2304 npip = NULL; | |
| 2305 rval = mdi_select_path(cdip, NULL, | |
| 2306 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 2307 NULL, &npip); | |
| 2308 if ((npip == NULL) || (rval != MDI_SUCCESS)) { | |
| 2309 /* | |
| 2310 * No paths available, jus return FATAL error. | |
| 2311 */ | |
| 2312 VHCI_RELEASE_LUN(vlun); | |
| 2313 if (pgr_sema_held) { | |
| 2314 sema_v(&vlun->svl_pgr_sema); | |
| 2315 } | |
| 2316 return (TRAN_FATAL_ERROR); | |
| 2317 } | |
| 2318 mdi_rele_path(npip); | |
| 2319 VHCI_DEBUG(1, (CE_NOTE, NULL, "!invoking " | |
| 2320 "mdi_failover\n")); | |
| 2321 rval = mdi_failover(vhci->vhci_dip, cdip, | |
| 2322 MDI_FAILOVER_ASYNC); | |
| 2323 if (rval == MDI_FAILURE) { | |
| 2324 VHCI_RELEASE_LUN(vlun); | |
| 2325 if (pgr_sema_held) { | |
| 2326 sema_v(&vlun->svl_pgr_sema); | |
| 2327 } | |
| 2328 return (TRAN_FATAL_ERROR); | |
| 2329 } else if (rval == MDI_BUSY) { | |
| 2330 VHCI_RELEASE_LUN(vlun); | |
| 2331 if (pgr_sema_held) { | |
| 2332 sema_v(&vlun->svl_pgr_sema); | |
| 2333 } | |
| 2334 return (TRAN_BUSY); | |
| 2335 } else { | |
| 2336 if (pgr_sema_held) { | |
| 2337 sema_v(&vlun->svl_pgr_sema); | |
| 2338 } | |
| 2339 return (TRAN_BUSY); | |
| 2340 } | |
| 2341 } | |
| 2342 vlun->svl_waiting_for_activepath = 0; | |
| 2343 bind_path: | |
| 2344 vpkt->vpkt_path = pip; | |
| 2345 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 2346 ASSERT(svp != NULL); | |
| 2347 | |
| 2348 psd = svp->svp_psd; | |
| 2349 ASSERT(psd != NULL); | |
| 2350 address = &psd->sd_address; | |
| 2351 } else { | |
| 2352 pkt = vpkt->vpkt_hba_pkt; | |
| 2353 address = &pkt->pkt_address; | |
| 2354 } | |
| 2355 | |
| 2356 /* | |
| 2357 * For PKT_PARTIAL_DMA case, call pHCI's scsi_init_pkt whenever | |
| 2358 * target driver calls vhci_scsi_init_pkt. | |
| 2359 */ | |
| 2360 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) && | |
| 2361 vpkt->vpkt_path && vpkt->vpkt_hba_pkt) { | |
| 2362 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2363 "vhci_bind_transport: PKT_PARTIAL_DMA " | |
| 2364 "vpkt 0x%p, path 0x%p hba_pkt 0x%p\n", | |
| 2365 (void *)vpkt, (void *)vpkt->vpkt_path, (void *)pkt)); | |
| 2366 pkt = vpkt->vpkt_hba_pkt; | |
| 2367 address = &pkt->pkt_address; | |
| 2368 } | |
| 2369 | |
| 2370 if (pkt == NULL || (vpkt->vpkt_flags & CFLAG_DMA_PARTIAL)) { | |
| 2371 pkt = scsi_init_pkt(address, pkt, | |
| 2372 vpkt->vpkt_tgt_init_bp, vpkt->vpkt_tgt_init_cdblen, | |
| 2373 vpkt->vpkt_tgt_init_scblen, | |
| 2374 vpkt->vpkt_tgt_init_privlen, flags, func, NULL); | |
| 2375 | |
| 2376 if (pkt == NULL) { | |
| 2377 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2378 "!bind transport: 0x%p 0x%p 0x%p\n", | |
| 2379 (void *)vhci, (void *)psd, (void *)vpkt)); | |
| 2380 if ((vpkt->vpkt_hba_pkt == NULL) && vpkt->vpkt_path) { | |
| 2381 MDI_PI_ERRSTAT(vpkt->vpkt_path, | |
| 2382 MDI_PI_TRANSERR); | |
| 2383 mdi_rele_path(vpkt->vpkt_path); | |
| 2384 vpkt->vpkt_path = NULL; | |
| 2385 } | |
| 2386 if (pgr_sema_held) { | |
| 2387 sema_v(&vlun->svl_pgr_sema); | |
| 2388 } | |
| 2389 /* | |
| 2390 * Looks like a fatal error. | |
| 2391 * May be device disappeared underneath. | |
| 2392 * Give another chance to target driver for a retry to | |
| 2393 * get another path. | |
| 2394 */ | |
| 2395 return (TRAN_BUSY); | |
| 2396 } | |
| 2397 } | |
| 2398 | |
| 2399 pkt->pkt_private = vpkt; | |
| 2400 vpkt->vpkt_hba_pkt = pkt; | |
| 2401 return (TRAN_ACCEPT); | |
| 2402 } | |
| 2403 | |
| 2404 | |
| 2405 /*PRINTFLIKE3*/ | |
| 2406 void | |
| 2407 vhci_log(int level, dev_info_t *dip, const char *fmt, ...) | |
| 2408 { | |
| 2409 char buf[256]; | |
| 2410 va_list ap; | |
| 2411 | |
| 2412 va_start(ap, fmt); | |
| 2413 (void) vsprintf(buf, fmt, ap); | |
| 2414 va_end(ap); | |
| 2415 | |
| 2416 scsi_log(dip, "scsi_vhci", level, buf); | |
| 2417 } | |
| 2418 | |
| 2419 /* do a PGR out with the information we've saved away */ | |
| 2420 static int | |
| 2421 vhci_do_prout(scsi_vhci_priv_t *svp) | |
| 2422 { | |
| 2423 | |
| 2424 struct scsi_pkt *new_pkt; | |
| 2425 struct buf *bp; | |
| 2426 scsi_vhci_lun_t *vlun; | |
| 2427 int rval, retry, nr_retry, ua_retry; | |
| 2428 struct scsi_extended_sense *sns; | |
| 2429 | |
| 2430 bp = getrbuf(KM_SLEEP); | |
| 2431 bp->b_flags = B_WRITE; | |
| 2432 bp->b_resid = 0; | |
| 2433 | |
| 2434 VHCI_INCR_PATH_CMDCOUNT(svp); | |
| 2435 vlun = svp->svp_svl; | |
| 2436 | |
| 2437 new_pkt = scsi_init_pkt(&svp->svp_psd->sd_address, NULL, bp, | |
| 2438 CDB_GROUP1, sizeof (struct scsi_arq_status), 0, 0, | |
| 2439 SLEEP_FUNC, NULL); | |
| 2440 if (new_pkt == NULL) { | |
| 2441 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2442 freerbuf(bp); | |
| 2443 cmn_err(CE_WARN, "!vhci_do_prout: scsi_init_pkt failed"); | |
| 2444 return (0); | |
| 2445 } | |
| 2446 mutex_enter(&vlun->svl_mutex); | |
| 2447 bp->b_un.b_addr = (caddr_t)&vlun->svl_prout; | |
| 2448 bp->b_bcount = vlun->svl_bcount; | |
| 2449 bcopy(vlun->svl_cdb, new_pkt->pkt_cdbp, | |
| 2450 sizeof (vlun->svl_cdb)); | |
| 2451 new_pkt->pkt_time = vlun->svl_time; | |
| 2452 mutex_exit(&vlun->svl_mutex); | |
| 2453 new_pkt->pkt_flags = FLAG_NOINTR; | |
| 2454 | |
| 2455 ua_retry = nr_retry = retry = 0; | |
| 2456 again: | |
| 2457 rval = vhci_do_scsi_cmd(new_pkt); | |
| 2458 if (rval != 1) { | |
| 2459 if ((new_pkt->pkt_reason == CMD_CMPLT) && | |
| 2460 (SCBP_C(new_pkt) == STATUS_CHECK) && | |
| 2461 (new_pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 2462 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
| 2463 (new_pkt->pkt_scbp))->sts_sensedata); | |
| 2464 if ((sns->es_key == KEY_UNIT_ATTENTION) || | |
| 2465 (sns->es_key == KEY_NOT_READY)) { | |
| 2466 int max_retry; | |
| 2467 struct scsi_failover_ops *fops; | |
| 2468 fops = vlun->svl_fops; | |
| 2469 rval = (*fops->sfo_analyze_sense) | |
| 2470 (svp->svp_psd, sns, | |
| 2471 vlun->svl_fops_ctpriv); | |
| 2472 if (rval == SCSI_SENSE_NOT_READY) { | |
| 2473 max_retry = vhci_prout_not_ready_retry; | |
| 2474 retry = nr_retry++; | |
| 2475 delay(1*drv_usectohz(1000000)); | |
| 2476 } else { | |
| 2477 /* chk for state change and update */ | |
| 2478 if (rval == SCSI_SENSE_STATE_CHANGED) { | |
| 2479 int held; | |
| 2480 VHCI_HOLD_LUN(vlun, | |
| 2481 VH_NOSLEEP, held); | |
| 2482 if (!held) { | |
| 2483 rval = TRAN_BUSY; | |
| 2484 } else { | |
| 2485 /* chk for alua first */ | |
| 2486 vhci_update_pathstates( | |
| 2487 (void *)vlun); | |
| 2488 } | |
| 2489 } | |
| 2490 retry = ua_retry++; | |
| 2491 max_retry = VHCI_MAX_PGR_RETRIES; | |
| 2492 } | |
| 2493 if (retry < max_retry) { | |
| 2494 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 2495 "!vhci_do_prout retry 0x%x " | |
| 2496 "(0x%x 0x%x 0x%x)", | |
| 2497 SCBP_C(new_pkt), | |
| 2498 new_pkt->pkt_cdbp[0], | |
| 2499 new_pkt->pkt_cdbp[1], | |
| 2500 new_pkt->pkt_cdbp[2])); | |
| 2501 goto again; | |
| 2502 } | |
| 2503 rval = 0; | |
| 2504 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 2505 "!vhci_do_prout 0x%x " | |
| 2506 "(0x%x 0x%x 0x%x)", | |
| 2507 SCBP_C(new_pkt), | |
| 2508 new_pkt->pkt_cdbp[0], | |
| 2509 new_pkt->pkt_cdbp[1], | |
| 2510 new_pkt->pkt_cdbp[2])); | |
| 2511 } else if (sns->es_key == KEY_ILLEGAL_REQUEST) | |
| 2512 rval = VHCI_PGR_ILLEGALOP; | |
| 2513 } | |
| 2514 } else { | |
| 2515 rval = 1; | |
| 2516 } | |
| 2517 scsi_destroy_pkt(new_pkt); | |
| 2518 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2519 freerbuf(bp); | |
| 2520 return (rval); | |
| 2521 } | |
| 2522 | |
| 2523 static void | |
| 2524 vhci_run_cmd(void *arg) | |
| 2525 { | |
| 2526 struct scsi_pkt *pkt = (struct scsi_pkt *)arg; | |
| 2527 struct scsi_pkt *tpkt; | |
| 2528 scsi_vhci_priv_t *svp; | |
| 2529 mdi_pathinfo_t *pip, *npip; | |
| 2530 scsi_vhci_lun_t *vlun; | |
| 2531 dev_info_t *cdip; | |
| 2532 scsi_vhci_priv_t *nsvp; | |
| 2533 int fail = 0; | |
| 2534 int rval; | |
| 2535 struct vhci_pkt *vpkt; | |
| 2536 uchar_t cdb_1; | |
| 2537 vhci_prout_t *prout; | |
| 2538 | |
| 2539 vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
| 2540 tpkt = vpkt->vpkt_tgt_pkt; | |
| 2541 pip = vpkt->vpkt_path; | |
| 2542 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 2543 if (svp == NULL) { | |
| 2544 tpkt->pkt_reason = CMD_TRAN_ERR; | |
| 2545 tpkt->pkt_statistics = STAT_ABORTED; | |
| 2546 goto done; | |
| 2547 } | |
| 2548 vlun = svp->svp_svl; | |
| 2549 prout = &vlun->svl_prout; | |
| 2550 if (SCBP_C(pkt) != STATUS_GOOD) | |
| 2551 fail++; | |
| 2552 cdip = vlun->svl_dip; | |
| 2553 pip = npip = NULL; | |
| 2554 rval = mdi_select_path(cdip, NULL, | |
| 2555 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, NULL, &npip); | |
| 2556 if ((rval != MDI_SUCCESS) || (npip == NULL)) { | |
| 2557 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2558 "vhci_run_cmd: no path! 0x%p\n", (void *)svp)); | |
| 2559 tpkt->pkt_reason = CMD_TRAN_ERR; | |
| 2560 tpkt->pkt_statistics = STAT_ABORTED; | |
| 2561 goto done; | |
| 2562 } | |
| 2563 | |
| 2564 cdb_1 = vlun->svl_cdb[1]; | |
| 2565 vlun->svl_cdb[1] &= 0xe0; | |
| 2566 vlun->svl_cdb[1] |= VHCI_PROUT_R_AND_IGNORE; | |
| 2567 | |
| 2568 do { | |
| 2569 nsvp = (scsi_vhci_priv_t *) | |
| 2570 mdi_pi_get_vhci_private(npip); | |
| 2571 if (nsvp == NULL) { | |
| 2572 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2573 "vhci_run_cmd: no " | |
| 2574 "client priv! 0x%p offlined?\n", | |
| 2575 (void *)npip)); | |
| 2576 goto next_path; | |
| 2577 } | |
| 2578 if (vlun->svl_first_path == npip) { | |
| 2579 goto next_path; | |
| 2580 } else { | |
| 2581 if (vhci_do_prout(nsvp) != 1) | |
| 2582 fail++; | |
| 2583 } | |
| 2584 next_path: | |
| 2585 pip = npip; | |
| 2586 rval = mdi_select_path(cdip, NULL, | |
| 2587 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
| 2588 pip, &npip); | |
| 2589 mdi_rele_path(pip); | |
| 2590 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
| 2591 | |
| 2592 vlun->svl_cdb[1] = cdb_1; | |
| 2593 | |
| 2594 if (fail) { | |
| 2595 VHCI_DEBUG(4, (CE_WARN, NULL, "%s%d: key registration failed, " | |
| 2596 "couldn't be replicated on all paths", | |
| 2597 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 2598 vhci_print_prout_keys(vlun, "vhci_run_cmd: "); | |
| 2599 | |
| 2600 if (SCBP_C(pkt) != STATUS_GOOD) { | |
| 2601 tpkt->pkt_reason = CMD_TRAN_ERR; | |
| 2602 tpkt->pkt_statistics = STAT_ABORTED; | |
| 2603 } | |
| 2604 } else { | |
| 2605 vlun->svl_pgr_active = 1; | |
| 2606 vhci_print_prout_keys(vlun, "vhci_run_cmd: before bcopy:"); | |
| 2607 | |
| 2608 bcopy((const void *)prout->service_key, | |
| 2609 (void *)prout->active_service_key, MHIOC_RESV_KEY_SIZE); | |
| 2610 bcopy((const void *)prout->res_key, | |
| 2611 (void *)prout->active_res_key, MHIOC_RESV_KEY_SIZE); | |
| 2612 | |
| 2613 vhci_print_prout_keys(vlun, "vhci_run_cmd: after bcopy:"); | |
| 2614 } | |
| 2615 done: | |
| 2616 if (SCBP_C(pkt) == STATUS_GOOD) | |
| 2617 vlun->svl_first_path = NULL; | |
| 2618 | |
| 2619 if (svp) | |
| 2620 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2621 | |
| 2622 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 2623 scsi_destroy_pkt(pkt); | |
| 2624 vpkt->vpkt_hba_pkt = NULL; | |
| 2625 if (vpkt->vpkt_path) { | |
| 2626 mdi_rele_path(vpkt->vpkt_path); | |
| 2627 vpkt->vpkt_path = NULL; | |
| 2628 } | |
| 2629 } | |
| 2630 | |
| 2631 sema_v(&vlun->svl_pgr_sema); | |
| 2632 /* | |
| 2633 * The PROUT commands are not included in the automatic retry | |
| 2634 * mechanism, therefore, vpkt_org_vpkt should never be set here. | |
| 2635 */ | |
| 2636 ASSERT(vpkt->vpkt_org_vpkt == NULL); | |
| 2637 if (tpkt->pkt_comp) | |
| 2638 (*tpkt->pkt_comp)(tpkt); | |
| 2639 | |
| 2640 } | |
| 2641 | |
| 2642 /* | |
| 2643 * Get the keys registered with this target. Since we will have | |
| 2644 * registered the same key with multiple initiators, strip out | |
| 2645 * any duplicate keys. | |
| 2646 * | |
| 2647 * The pointers which will be used to filter the registered keys from | |
| 2648 * the device will be stored in filter_prin and filter_pkt. If the | |
| 2649 * allocation length of the buffer was sufficient for the number of | |
| 2650 * parameter data bytes available to be returned by the device then the | |
| 2651 * key filtering will use the keylist returned from the original | |
| 2652 * request. If the allocation length of the buffer was not sufficient, | |
| 2653 * then the filtering will use the keylist returned from the request | |
| 2654 * that is resent below. | |
| 2655 * | |
| 2656 * If the device returns an additional length field that is greater than | |
| 2657 * the allocation length of the buffer, then allocate a new buffer which | |
| 2658 * can accommodate the number of parameter data bytes available to be | |
| 2659 * returned. Resend the scsi PRIN command, filter out the duplicate | |
| 2660 * keys and return as many of the unique keys found that was originally | |
| 2661 * requested and set the additional length field equal to the data bytes | |
| 2662 * of unique reservation keys available to be returned. | |
| 2663 * | |
| 2664 * If the device returns an additional length field that is less than or | |
| 2665 * equal to the allocation length of the buffer, then all the available | |
| 2666 * keys registered were returned by the device. Filter out the | |
| 2667 * duplicate keys and return all of the unique keys found and set the | |
| 2668 * additional length field equal to the data bytes of the reservation | |
| 2669 * keys to be returned. | |
| 2670 */ | |
| 2671 static int | |
| 2672 vhci_do_prin(struct vhci_pkt **vpkt) | |
| 2673 { | |
| 2674 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
| 2675 mdi_pi_get_vhci_private((*vpkt)->vpkt_path); | |
| 2676 vhci_prin_readkeys_t *prin; | |
| 2677 scsi_vhci_lun_t *vlun = svp->svp_svl; | |
| 2678 struct scsi_vhci *vhci = | |
| 2679 ADDR2VHCI(&((*vpkt)->vpkt_tgt_pkt->pkt_address)); | |
| 2680 | |
| 2681 struct buf *new_bp = NULL; | |
| 2682 struct scsi_pkt *new_pkt = NULL; | |
| 2683 struct vhci_pkt *new_vpkt = NULL; | |
| 2684 int hdr_len = 0; | |
| 2685 int rval = VHCI_CMD_CMPLT; | |
| 2686 uint32_t prin_length = 0; | |
| 2687 uint32_t svl_prin_length = 0; | |
| 2688 | |
| 2689 prin = (vhci_prin_readkeys_t *) | |
| 2690 bp_mapin_common((*vpkt)->vpkt_tgt_init_bp, VM_NOSLEEP); | |
| 2691 | |
| 2692 if (prin != NULL) { | |
| 2693 prin_length = BE_32(prin->length); | |
| 2694 } | |
| 2695 | |
| 2696 if (prin == NULL) { | |
| 2697 VHCI_DEBUG(5, (CE_WARN, NULL, | |
| 2698 "vhci_do_prin: bp_mapin_common failed.")); | |
| 2699 rval = VHCI_CMD_ERROR; | |
| 2700 } else { | |
| 2701 /* | |
| 2702 * According to SPC-3r22, sec 4.3.4.6: "If the amount of | |
| 2703 * information to be transferred exceeds the maximum value | |
| 2704 * that the ALLOCATION LENGTH field is capable of specifying, | |
| 2705 * the device server shall...terminate the command with CHECK | |
| 2706 * CONDITION status". The ALLOCATION LENGTH field of the | |
| 2707 * PERSISTENT RESERVE IN command is 2 bytes. We should never | |
| 2708 * get here with an ADDITIONAL LENGTH greater than 0xFFFF | |
| 2709 * so if we do, then it is an error! | |
| 2710 */ | |
| 2711 | |
| 2712 hdr_len = sizeof (prin->length) + sizeof (prin->generation); | |
| 2713 | |
| 2714 if ((prin_length + hdr_len) > 0xFFFF) { | |
| 2715 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2716 "vhci_do_prin: Device returned invalid " | |
| 2717 "length 0x%x\n", prin_length)); | |
| 2718 rval = VHCI_CMD_ERROR; | |
| 2719 } | |
| 2720 } | |
| 2721 | |
| 2722 /* | |
| 2723 * If prin->length is greater than the byte count allocated in the | |
| 2724 * original buffer, then resend the request with enough buffer | |
| 2725 * allocated to get all of the available registered keys. | |
| 2726 */ | |
| 2727 if (rval != VHCI_CMD_ERROR) { | |
| 2728 if (((*vpkt)->vpkt_tgt_init_bp->b_bcount - hdr_len) < | |
| 2729 prin_length) { | |
| 2730 if ((*vpkt)->vpkt_org_vpkt == NULL) { | |
| 2731 new_pkt = vhci_create_retry_pkt(*vpkt); | |
| 2732 if (new_pkt != NULL) { | |
| 2733 new_vpkt = TGTPKT2VHCIPKT(new_pkt); | |
| 2734 | |
| 2735 /* | |
| 2736 * This is the buf with buffer pointer | |
| 2737 * where the prin readkeys will be | |
| 2738 * returned from the device | |
| 2739 */ | |
| 2740 new_bp = scsi_alloc_consistent_buf( | |
| 2741 &svp->svp_psd->sd_address, | |
| 2742 NULL, (prin_length + hdr_len), | |
| 2743 ((*vpkt)->vpkt_tgt_init_bp-> | |
| 2744 b_flags & (B_READ | B_WRITE)), | |
| 2745 NULL_FUNC, NULL); | |
| 2746 if (new_bp != NULL) { | |
| 2747 if (new_bp->b_un.b_addr != | |
| 2748 NULL) { | |
| 2749 | |
| 2750 new_bp->b_bcount = | |
| 2751 prin_length + | |
| 2752 hdr_len; | |
| 2753 | |
| 2754 new_pkt->pkt_cdbp[7] = | |
| 2755 (uchar_t)(new_bp-> | |
| 2756 b_bcount >> 8); | |
| 2757 new_pkt->pkt_cdbp[8] = | |
| 2758 (uchar_t)new_bp-> | |
| 2759 b_bcount; | |
| 2760 | |
| 2761 rval = VHCI_CMD_RETRY; | |
| 2762 } else { | |
| 2763 rval = VHCI_CMD_ERROR; | |
| 2764 } | |
| 2765 } else { | |
| 2766 rval = VHCI_CMD_ERROR; | |
| 2767 } | |
| 2768 } else { | |
| 2769 rval = VHCI_CMD_ERROR; | |
| 2770 } | |
| 2771 } else { | |
| 2772 rval = VHCI_CMD_ERROR; | |
| 2773 } | |
| 2774 } | |
| 2775 } | |
| 2776 | |
| 2777 if (rval == VHCI_CMD_RETRY) { | |
| 2778 new_vpkt->vpkt_tgt_init_bp = new_bp; | |
| 2779 | |
| 2780 /* | |
| 2781 * Release the old path because it does not matter which path | |
| 2782 * this command is sent down. This allows the normal bind | |
| 2783 * transport mechanism to be used. | |
| 2784 */ | |
| 2785 if ((*vpkt)->vpkt_path != NULL) { | |
| 2786 mdi_rele_path((*vpkt)->vpkt_path); | |
| 2787 (*vpkt)->vpkt_path = NULL; | |
| 2788 } | |
| 2789 | |
| 2790 /* | |
| 2791 * Dispatch the retry command | |
| 2792 */ | |
| 2793 if (taskq_dispatch(vhci->vhci_taskq, vhci_dispatch_scsi_start, | |
| 2794 (void *) new_vpkt, KM_NOSLEEP) == NULL) { | |
| 2795 rval = VHCI_CMD_ERROR; | |
| 2796 } else { | |
| 2797 /* | |
| 2798 * If we return VHCI_CMD_RETRY, that means the caller | |
| 2799 * is going to bail and wait for the reissued command | |
| 2800 * to complete. In that case, we need to decrement | |
| 2801 * the path command count right now. In any other | |
| 2802 * case, it'll be decremented by the caller. | |
| 2803 */ | |
| 2804 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2805 } | |
| 2806 } | |
| 2807 | |
| 2808 if ((rval != VHCI_CMD_ERROR) && (rval != VHCI_CMD_RETRY)) { | |
| 2809 int new, old; | |
| 2810 int data_len = 0; | |
| 2811 | |
| 2812 data_len = prin_length / MHIOC_RESV_KEY_SIZE; | |
| 2813 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_do_prin: %d keys read\n", | |
| 2814 data_len)); | |
| 2815 | |
| 2816 #ifdef DEBUG | |
| 2817 VHCI_DEBUG(5, (CE_NOTE, NULL, "vhci_do_prin: from storage\n")); | |
| 2818 if (vhci_debug == 5) | |
| 2819 vhci_print_prin_keys(prin, data_len); | |
| 2820 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2821 "vhci_do_prin: MPxIO old keys:\n")); | |
| 2822 if (vhci_debug == 5) | |
| 2823 vhci_print_prin_keys(&vlun->svl_prin, data_len); | |
| 2824 #endif | |
| 2825 | |
| 2826 /* | |
| 2827 * Filter out all duplicate keys returned from the device | |
| 2828 * We know that we use a different key for every host, so we | |
| 2829 * can simply strip out duplicates. Otherwise we would need to | |
| 2830 * do more bookkeeping to figure out which keys to strip out. | |
| 2831 */ | |
| 2832 | |
| 2833 new = 0; | |
| 2834 | |
| 2835 if (data_len > 0) { | |
| 2836 vlun->svl_prin.keylist[0] = prin->keylist[0]; | |
| 2837 new++; | |
| 2838 } | |
| 2839 | |
| 2840 for (old = 1; old < data_len; old++) { | |
| 2841 int j; | |
| 2842 int match = 0; | |
| 2843 for (j = 0; j < new; j++) { | |
| 2844 if (bcmp(&prin->keylist[old], | |
| 2845 &vlun->svl_prin.keylist[j], | |
| 2846 sizeof (mhioc_resv_key_t)) == 0) { | |
| 2847 match = 1; | |
| 2848 break; | |
| 2849 } | |
| 2850 } | |
| 2851 if (!match) { | |
| 2852 vlun->svl_prin.keylist[new] = | |
| 2853 prin->keylist[old]; | |
| 2854 new++; | |
| 2855 } | |
| 2856 } | |
| 2857 | |
| 2858 vlun->svl_prin.generation = prin->generation; | |
| 2859 svl_prin_length = new * MHIOC_RESV_KEY_SIZE; | |
| 2860 vlun->svl_prin.length = BE_32(svl_prin_length); | |
| 2861 | |
| 2862 /* | |
| 2863 * If we arrived at this point after issuing a retry, make sure | |
| 2864 * that we put everything back the way it originally was so | |
| 2865 * that the target driver can complete the command correctly. | |
| 2866 */ | |
| 2867 if ((*vpkt)->vpkt_org_vpkt != NULL) { | |
| 2868 new_bp = (*vpkt)->vpkt_tgt_init_bp; | |
| 2869 | |
| 2870 scsi_free_consistent_buf(new_bp); | |
| 2871 | |
| 2872 *vpkt = vhci_sync_retry_pkt(*vpkt); | |
| 2873 | |
| 2874 /* | |
| 2875 * Make sure the original buffer is mapped into kernel | |
| 2876 * space before we try to copy the filtered keys into | |
| 2877 * it. | |
| 2878 */ | |
| 2879 prin = (vhci_prin_readkeys_t *)bp_mapin_common( | |
| 2880 (*vpkt)->vpkt_tgt_init_bp, VM_NOSLEEP); | |
| 2881 } | |
| 2882 | |
| 2883 /* | |
| 2884 * Now copy the desired number of prin keys into the original | |
| 2885 * target buffer. | |
| 2886 */ | |
| 2887 if (svl_prin_length <= | |
| 2888 ((*vpkt)->vpkt_tgt_init_bp->b_bcount - hdr_len)) { | |
| 2889 /* | |
| 2890 * It is safe to return all of the available unique | |
| 2891 * keys | |
| 2892 */ | |
| 2893 bcopy(&vlun->svl_prin, prin, svl_prin_length + hdr_len); | |
| 2894 } else { | |
| 2895 /* | |
| 2896 * Not all of the available keys were requested by the | |
| 2897 * original command. | |
| 2898 */ | |
| 2899 bcopy(&vlun->svl_prin, prin, | |
| 2900 (*vpkt)->vpkt_tgt_init_bp->b_bcount); | |
| 2901 } | |
| 2902 #ifdef DEBUG | |
| 2903 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2904 "vhci_do_prin: To Application:\n")); | |
| 2905 if (vhci_debug == 5) | |
| 2906 vhci_print_prin_keys(prin, new); | |
| 2907 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2908 "vhci_do_prin: MPxIO new keys:\n")); | |
| 2909 if (vhci_debug == 5) | |
| 2910 vhci_print_prin_keys(&vlun->svl_prin, new); | |
| 2911 #endif | |
| 2912 } | |
| 2913 | |
| 2914 if (rval == VHCI_CMD_ERROR) { | |
| 2915 /* | |
| 2916 * If we arrived at this point after issuing a | |
| 2917 * retry, make sure that we put everything back | |
| 2918 * the way it originally was so that ssd can | |
| 2919 * complete the command correctly. | |
| 2920 */ | |
| 2921 | |
| 2922 if ((*vpkt)->vpkt_org_vpkt != NULL) { | |
| 2923 new_bp = (*vpkt)->vpkt_tgt_init_bp; | |
| 2924 if (new_bp != NULL) { | |
| 2925 scsi_free_consistent_buf(new_bp); | |
| 2926 } | |
| 2927 | |
| 2928 new_vpkt = *vpkt; | |
| 2929 *vpkt = (*vpkt)->vpkt_org_vpkt; | |
| 2930 | |
| 2931 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 2932 new_vpkt->vpkt_tgt_pkt); | |
| 2933 } | |
| 2934 | |
| 2935 /* | |
| 2936 * Mark this command completion as having an error so that | |
| 2937 * ssd will retry the command. | |
| 2938 */ | |
| 2939 | |
| 2940 (*vpkt)->vpkt_tgt_pkt->pkt_reason = CMD_ABORTED; | |
| 2941 (*vpkt)->vpkt_tgt_pkt->pkt_statistics |= STAT_ABORTED; | |
| 2942 | |
| 2943 rval = VHCI_CMD_CMPLT; | |
| 2944 } | |
| 2945 | |
| 2946 /* | |
| 2947 * Make sure that the semaphore is only released once. | |
| 2948 */ | |
| 2949 if (rval == VHCI_CMD_CMPLT) { | |
| 2950 sema_v(&vlun->svl_pgr_sema); | |
| 2951 } | |
| 2952 | |
| 2953 return (rval); | |
| 2954 } | |
| 2955 | |
| 2956 static void | |
| 2957 vhci_intr(struct scsi_pkt *pkt) | |
| 2958 { | |
| 2959 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
| 2960 struct scsi_pkt *tpkt; | |
| 2961 scsi_vhci_priv_t *svp; | |
| 2962 scsi_vhci_lun_t *vlun; | |
| 2963 int rval, held; | |
| 2964 struct scsi_failover_ops *fops; | |
| 2965 struct scsi_extended_sense *sns; | |
| 2966 mdi_pathinfo_t *lpath; | |
| 2967 static char *timeout_err = "Command Timeout"; | |
| 2968 static char *parity_err = "Parity Error"; | |
| 2969 char *err_str = NULL; | |
| 2970 dev_info_t *vdip, *cdip, *pdip; | |
| 2971 char *cpath, *dpath; | |
| 2972 | |
| 2973 ASSERT(vpkt != NULL); | |
| 2974 tpkt = vpkt->vpkt_tgt_pkt; | |
| 2975 ASSERT(tpkt != NULL); | |
| 2976 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 2977 ASSERT(svp != NULL); | |
| 2978 vlun = svp->svp_svl; | |
| 2979 ASSERT(vlun != NULL); | |
| 2980 lpath = vpkt->vpkt_path; | |
| 2981 | |
| 2982 /* | |
| 2983 * sync up the target driver's pkt with the pkt that | |
| 2984 * we actually used | |
| 2985 */ | |
| 2986 *(tpkt->pkt_scbp) = *(pkt->pkt_scbp); | |
| 2987 tpkt->pkt_resid = pkt->pkt_resid; | |
| 2988 tpkt->pkt_state = pkt->pkt_state; | |
| 2989 tpkt->pkt_statistics = pkt->pkt_statistics; | |
| 2990 tpkt->pkt_reason = pkt->pkt_reason; | |
| 2991 | |
| 2992 if (pkt->pkt_cdbp[0] == SCMD_PROUT && | |
| 2993 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
| 2994 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE)) { | |
| 2995 if ((SCBP_C(pkt) != STATUS_GOOD) || | |
| 2996 (pkt->pkt_reason != CMD_CMPLT)) { | |
| 2997 sema_v(&vlun->svl_pgr_sema); | |
| 2998 } | |
| 2999 } else if (pkt->pkt_cdbp[0] == SCMD_PRIN) { | |
| 3000 if (pkt->pkt_reason != CMD_CMPLT || | |
| 3001 (SCBP_C(pkt) != STATUS_GOOD)) { | |
| 3002 sema_v(&vlun->svl_pgr_sema); | |
| 3003 } | |
| 3004 } | |
| 3005 | |
| 3006 switch (pkt->pkt_reason) { | |
| 3007 case CMD_CMPLT: | |
| 3008 /* | |
| 3009 * cmd completed successfully, check for scsi errors | |
| 3010 */ | |
| 3011 switch (*(pkt->pkt_scbp)) { | |
| 3012 case STATUS_CHECK: | |
| 3013 if (pkt->pkt_state & STATE_ARQ_DONE) { | |
| 3014 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
| 3015 (pkt->pkt_scbp))->sts_sensedata); | |
| 3016 fops = vlun->svl_fops; | |
| 3017 ASSERT(fops != NULL); | |
| 3018 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_intr: " | |
| 3019 "Received sns key %x esc %x escq %x\n", | |
| 3020 sns->es_key, sns->es_add_code, | |
| 3021 sns->es_qual_code)); | |
| 3022 | |
| 3023 if (vlun->svl_waiting_for_activepath == 1) { | |
| 3024 /* | |
| 3025 * if we are here it means we are | |
| 3026 * in the midst of a probe/attach | |
| 3027 * through a passive path; this | |
| 3028 * case is exempt from sense analysis | |
| 3029 * for detection of ext. failover | |
| 3030 * because that would unnecessarily | |
| 3031 * increase attach time. | |
| 3032 */ | |
| 3033 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 3034 vpkt->vpkt_tgt_init_scblen); | |
| 3035 break; | |
| 3036 } | |
| 3037 if (sns->es_add_code == VHCI_SCSI_PERR) { | |
| 3038 /* | |
| 3039 * parity error | |
| 3040 */ | |
| 3041 err_str = parity_err; | |
| 3042 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 3043 vpkt->vpkt_tgt_init_scblen); | |
| 3044 break; | |
| 3045 } | |
| 3046 rval = (*fops->sfo_analyze_sense) | |
| 3047 (svp->svp_psd, sns, vlun->svl_fops_ctpriv); | |
| 3048 if ((rval == SCSI_SENSE_NOFAILOVER) || | |
| 3049 (rval == SCSI_SENSE_UNKNOWN) || | |
| 3050 (rval == SCSI_SENSE_NOT_READY)) { | |
| 3051 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 3052 vpkt->vpkt_tgt_init_scblen); | |
| 3053 break; | |
| 3054 } else if (rval == SCSI_SENSE_STATE_CHANGED) { | |
| 3055 struct scsi_vhci *vhci; | |
| 3056 vhci = ADDR2VHCI(&tpkt->pkt_address); | |
| 3057 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 3058 if (!held) { | |
| 3059 /* | |
| 3060 * looks like some other thread | |
| 3061 * has already detected this | |
| 3062 * condition | |
| 3063 */ | |
| 3064 tpkt->pkt_state &= | |
| 3065 ~STATE_ARQ_DONE; | |
| 3066 *(tpkt->pkt_scbp) = | |
| 3067 STATUS_BUSY; | |
| 3068 break; | |
| 3069 } | |
| 3070 (void) taskq_dispatch( | |
| 3071 vhci->vhci_update_pathstates_taskq, | |
| 3072 vhci_update_pathstates, | |
| 3073 (void *)vlun, KM_SLEEP); | |
| 3074 } else { | |
| 3075 /* | |
| 3076 * externally initiated failover | |
| 3077 * has occurred or is in progress | |
| 3078 */ | |
| 3079 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 3080 if (!held) { | |
| 3081 /* | |
| 3082 * looks like some other thread | |
| 3083 * has already detected this | |
| 3084 * condition | |
| 3085 */ | |
| 3086 tpkt->pkt_state &= | |
| 3087 ~STATE_ARQ_DONE; | |
| 3088 *(tpkt->pkt_scbp) = | |
| 3089 STATUS_BUSY; | |
| 3090 break; | |
| 3091 } else { | |
| 3092 rval = vhci_handle_ext_fo | |
| 3093 (pkt, rval); | |
| 3094 if (rval == BUSY_RETURN) { | |
| 3095 tpkt->pkt_state &= | |
| 3096 ~STATE_ARQ_DONE; | |
| 3097 *(tpkt->pkt_scbp) = | |
| 3098 STATUS_BUSY; | |
| 3099 break; | |
| 3100 } | |
| 3101 bcopy(pkt->pkt_scbp, | |
| 3102 tpkt->pkt_scbp, | |
| 3103 vpkt->vpkt_tgt_init_scblen); | |
| 3104 break; | |
| 3105 } | |
| 3106 } | |
| 3107 } | |
| 3108 break; | |
| 3109 | |
| 3110 /* | |
| 3111 * If this is a good SCSI-II RELEASE cmd completion then restore | |
| 3112 * the load balancing policy and reset VLUN_RESERVE_ACTIVE_FLG. | |
| 3113 * If this is a good SCSI-II RESERVE cmd completion then set | |
| 3114 * VLUN_RESERVE_ACTIVE_FLG. | |
| 3115 */ | |
| 3116 case STATUS_GOOD: | |
| 3117 if ((pkt->pkt_cdbp[0] == SCMD_RELEASE) || | |
| 3118 (pkt->pkt_cdbp[0] == SCMD_RELEASE_G1)) { | |
| 3119 (void) mdi_set_lb_policy(vlun->svl_dip, | |
| 3120 vlun->svl_lb_policy_save); | |
| 3121 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 3122 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3123 "!vhci_intr: vlun 0x%p release path 0x%p", | |
| 3124 (void *)vlun, (void *)vpkt->vpkt_path)); | |
| 3125 } | |
| 3126 | |
| 3127 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 3128 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 3129 vlun->svl_flags |= VLUN_RESERVE_ACTIVE_FLG; | |
| 3130 vlun->svl_resrv_pip = vpkt->vpkt_path; | |
| 3131 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3132 "!vhci_intr: vlun 0x%p reserved path 0x%p", | |
| 3133 (void *)vlun, (void *)vpkt->vpkt_path)); | |
| 3134 } | |
| 3135 break; | |
| 3136 | |
| 3137 case STATUS_RESERVATION_CONFLICT: | |
| 3138 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3139 "!vhci_intr: vlun 0x%p " | |
| 3140 "reserve conflict on path 0x%p", | |
| 3141 (void *)vlun, (void *)vpkt->vpkt_path)); | |
| 3142 /* FALLTHROUGH */ | |
| 3143 default: | |
| 3144 break; | |
| 3145 } | |
| 3146 | |
| 3147 /* | |
| 3148 * Update I/O completion statistics for the path | |
| 3149 */ | |
| 3150 mdi_pi_kstat_iosupdate(vpkt->vpkt_path, vpkt->vpkt_tgt_init_bp); | |
| 3151 | |
| 3152 /* | |
| 3153 * Command completed successfully, release the dma binding and | |
| 3154 * destroy the transport side of the packet. | |
| 3155 */ | |
| 3156 if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 3157 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
| 3158 ((pkt->pkt_cdbp[1] & 0x1f) == | |
| 3159 VHCI_PROUT_R_AND_IGNORE))) { | |
| 3160 if (SCBP_C(pkt) == STATUS_GOOD) { | |
| 3161 ASSERT(vlun->svl_taskq); | |
| 3162 svp->svp_last_pkt_reason = pkt->pkt_reason; | |
| 3163 (void) taskq_dispatch(vlun->svl_taskq, | |
| 3164 vhci_run_cmd, pkt, KM_SLEEP); | |
| 3165 return; | |
| 3166 } | |
| 3167 } | |
| 3168 if ((SCBP_C(pkt) == STATUS_GOOD) && | |
| 3169 (pkt->pkt_cdbp[0] == SCMD_PRIN) && | |
| 3170 vpkt->vpkt_tgt_init_bp) { | |
| 3171 /* | |
| 3172 * If the action (value in byte 1 of the cdb) is zero, | |
| 3173 * we're reading keys, and that's the only condition | |
| 3174 * where we need to be concerned with filtering keys | |
| 3175 * and potential retries. Otherwise, we simply signal | |
| 3176 * the semaphore and move on. | |
| 3177 */ | |
| 3178 if (pkt->pkt_cdbp[1] == 0) { | |
| 3179 /* | |
| 3180 * If this is the completion of an internal | |
| 3181 * retry then we need to make sure that the | |
| 3182 * pkt and tpkt pointers are readjusted so | |
| 3183 * the calls to scsi_destroy_pkt and pkt_comp | |
| 3184 * below work * correctly. | |
| 3185 */ | |
| 3186 if (vpkt->vpkt_org_vpkt != NULL) { | |
| 3187 pkt = vpkt->vpkt_org_vpkt->vpkt_hba_pkt; | |
| 3188 tpkt = vpkt->vpkt_org_vpkt-> | |
| 3189 vpkt_tgt_pkt; | |
| 3190 | |
| 3191 /* | |
| 3192 * If this command was issued through | |
| 3193 * the taskq then we need to clear | |
| 3194 * this flag for proper processing in | |
| 3195 * the case of a retry from the target | |
| 3196 * driver. | |
| 3197 */ | |
| 3198 vpkt->vpkt_state &= | |
| 3199 ~VHCI_PKT_THRU_TASKQ; | |
| 3200 } | |
| 3201 | |
| 3202 /* | |
| 3203 * if vhci_do_prin returns VHCI_CMD_CMPLT then | |
| 3204 * vpkt will contain the address of the | |
| 3205 * original vpkt | |
| 3206 */ | |
| 3207 if (vhci_do_prin(&vpkt) == VHCI_CMD_RETRY) { | |
| 3208 /* | |
| 3209 * The command has been resent to get | |
| 3210 * all the keys from the device. Don't | |
| 3211 * complete the command with ssd until | |
| 3212 * the retry completes. | |
| 3213 */ | |
| 3214 return; | |
| 3215 } | |
| 3216 } else { | |
| 3217 sema_v(&vlun->svl_pgr_sema); | |
| 3218 } | |
| 3219 } | |
| 3220 | |
| 3221 break; | |
| 3222 | |
| 3223 case CMD_TIMEOUT: | |
| 3224 if ((pkt->pkt_statistics & | |
| 3225 (STAT_BUS_RESET|STAT_DEV_RESET|STAT_ABORTED)) == 0) { | |
| 3226 | |
| 3227 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3228 "!scsi vhci timeout invoked\n")); | |
| 3229 | |
| 3230 (void) vhci_recovery_reset(vlun, &pkt->pkt_address, | |
| 3231 FALSE, VHCI_DEPTH_ALL); | |
| 3232 } | |
| 3233 MDI_PI_ERRSTAT(lpath, MDI_PI_TRANSERR); | |
| 3234 tpkt->pkt_statistics |= STAT_ABORTED; | |
| 3235 err_str = timeout_err; | |
| 3236 break; | |
| 3237 | |
| 3238 case CMD_TRAN_ERR: | |
| 3239 /* | |
| 3240 * This status is returned if the transport has sent the cmd | |
| 3241 * down the link to the target and then some error occurs. | |
| 3242 * In case of SCSI-II RESERVE cmd, we don't know if the | |
| 3243 * reservation been accepted by the target or not, so we need | |
| 3244 * to clear the reservation. | |
| 3245 */ | |
| 3246 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 3247 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 3248 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_intr received" | |
| 3249 " cmd_tran_err for scsi-2 reserve cmd\n")); | |
| 3250 if (!vhci_recovery_reset(vlun, &pkt->pkt_address, | |
| 3251 TRUE, VHCI_DEPTH_TARGET)) { | |
| 3252 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3253 "!vhci_intr cmd_tran_err reset failed!")); | |
| 3254 } | |
| 3255 } | |
| 3256 break; | |
| 3257 | |
| 3258 case CMD_DEV_GONE: | |
| 3259 tpkt->pkt_reason = CMD_CMPLT; | |
| 3260 tpkt->pkt_state = STATE_GOT_BUS | | |
| 3261 STATE_GOT_TARGET | STATE_SENT_CMD | | |
| 3262 STATE_GOT_STATUS; | |
| 3263 *(tpkt->pkt_scbp) = STATUS_BUSY; | |
| 3264 break; | |
| 3265 | |
| 3266 default: | |
| 3267 break; | |
| 3268 } | |
| 3269 | |
| 3270 /* | |
| 3271 * SCSI-II RESERVE cmd has been serviced by the lower layers clear | |
| 3272 * the flag so the lun is not QUIESCED any longer. | |
| 3273 * Also clear the VHCI_PKT_THRU_TASKQ flag, to ensure that if this pkt | |
| 3274 * is retried, a taskq shall again be dispatched to service it. Else | |
| 3275 * it may lead to a system hang if the retry is within interrupt | |
| 3276 * context. | |
| 3277 */ | |
| 3278 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 3279 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 3280 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 3281 vpkt->vpkt_state &= ~VHCI_PKT_THRU_TASKQ; | |
| 3282 } | |
| 3283 | |
| 3284 /* | |
| 3285 * vpkt_org_vpkt should always be NULL here if the retry command | |
| 3286 * has been successfully processed. If vpkt_org_vpkt != NULL at | |
| 3287 * this point, it is an error so restore the original vpkt and | |
| 3288 * return an error to the target driver so it can retry the | |
| 3289 * command as appropriate. | |
| 3290 */ | |
| 3291 if (vpkt->vpkt_org_vpkt != NULL) { | |
| 3292 struct vhci_pkt *new_vpkt = vpkt; | |
| 3293 vpkt = vpkt->vpkt_org_vpkt; | |
| 3294 | |
| 3295 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 3296 new_vpkt->vpkt_tgt_pkt); | |
| 3297 | |
| 3298 /* | |
| 3299 * Mark this command completion as having an error so that | |
| 3300 * ssd will retry the command. | |
| 3301 */ | |
| 3302 vpkt->vpkt_tgt_pkt->pkt_reason = CMD_ABORTED; | |
| 3303 vpkt->vpkt_tgt_pkt->pkt_statistics |= STAT_ABORTED; | |
| 3304 | |
| 3305 pkt = vpkt->vpkt_hba_pkt; | |
| 3306 tpkt = vpkt->vpkt_tgt_pkt; | |
| 3307 } | |
| 3308 | |
| 3309 if ((err_str != NULL) && (pkt->pkt_reason != | |
| 3310 svp->svp_last_pkt_reason)) { | |
| 3311 cdip = vlun->svl_dip; | |
| 3312 pdip = mdi_pi_get_phci(vpkt->vpkt_path); | |
| 3313 vdip = ddi_get_parent(cdip); | |
| 3314 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3315 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3316 vhci_log(CE_WARN, vdip, "!%s (%s%d): %s on path %s (%s%d)", | |
| 3317 ddi_pathname(cdip, cpath), ddi_driver_name(cdip), | |
| 3318 ddi_get_instance(cdip), err_str, | |
| 3319 ddi_pathname(pdip, dpath), ddi_driver_name(pdip), | |
| 3320 ddi_get_instance(pdip)); | |
| 3321 kmem_free(cpath, MAXPATHLEN); | |
| 3322 kmem_free(dpath, MAXPATHLEN); | |
| 3323 } | |
| 3324 svp->svp_last_pkt_reason = pkt->pkt_reason; | |
| 3325 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 3326 | |
| 3327 /* | |
| 3328 * For PARTIAL_DMA, vhci should not free the path. | |
| 3329 * Target driver will call into vhci_scsi_dmafree or | |
| 3330 * destroy pkt to release this path. | |
| 3331 */ | |
| 3332 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 3333 scsi_destroy_pkt(pkt); | |
| 3334 vpkt->vpkt_hba_pkt = NULL; | |
| 3335 if (vpkt->vpkt_path) { | |
| 3336 mdi_rele_path(vpkt->vpkt_path); | |
| 3337 vpkt->vpkt_path = NULL; | |
| 3338 } | |
| 3339 } | |
| 3340 | |
| 3341 if (tpkt->pkt_comp) { | |
| 3342 (*tpkt->pkt_comp)(tpkt); | |
| 3343 } | |
| 3344 } | |
| 3345 | |
| 3346 /* | |
| 3347 * two possibilities: (1) failover has completed | |
| 3348 * or (2) is in progress; update our path states for | |
| 3349 * the former case; for the latter case, | |
| 3350 * initiate a scsi_watch request to | |
| 3351 * determine when failover completes - vlun is HELD | |
| 3352 * until failover completes; BUSY is returned to upper | |
| 3353 * layer in both the cases | |
| 3354 */ | |
| 3355 static int | |
| 3356 vhci_handle_ext_fo(struct scsi_pkt *pkt, int fostat) | |
| 3357 { | |
| 3358 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
| 3359 struct scsi_pkt *tpkt; | |
| 3360 scsi_vhci_priv_t *svp; | |
| 3361 scsi_vhci_lun_t *vlun; | |
| 3362 struct scsi_vhci *vhci; | |
| 3363 scsi_vhci_swarg_t *swarg; | |
| 3364 char *path; | |
| 3365 | |
| 3366 ASSERT(vpkt != NULL); | |
| 3367 tpkt = vpkt->vpkt_tgt_pkt; | |
| 3368 ASSERT(tpkt != NULL); | |
| 3369 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 3370 ASSERT(svp != NULL); | |
| 3371 vlun = svp->svp_svl; | |
| 3372 ASSERT(vlun != NULL); | |
| 3373 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 3374 | |
| 3375 vhci = ADDR2VHCI(&tpkt->pkt_address); | |
| 3376 | |
| 3377 if (fostat == SCSI_SENSE_INACTIVE) { | |
| 3378 VHCI_DEBUG(1, (CE_NOTE, NULL, "!Failover " | |
| 3379 "detected for %s; updating path states...\n", | |
| 3380 vlun->svl_lun_wwn)); | |
| 3381 /* | |
| 3382 * set the vlun flag to indicate to the task that the target | |
| 3383 * port group needs updating | |
| 3384 */ | |
| 3385 vlun->svl_flags |= VLUN_UPDATE_TPG; | |
| 3386 (void) taskq_dispatch(vhci->vhci_update_pathstates_taskq, | |
| 3387 vhci_update_pathstates, (void *)vlun, KM_SLEEP); | |
| 3388 } else { | |
| 3389 path = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3390 vhci_log(CE_NOTE, ddi_get_parent(vlun->svl_dip), | |
| 3391 "!%s (%s%d): Waiting for externally initiated failover " | |
| 3392 "to complete", ddi_pathname(vlun->svl_dip, path), | |
| 3393 ddi_driver_name(vlun->svl_dip), | |
| 3394 ddi_get_instance(vlun->svl_dip)); | |
| 3395 kmem_free(path, MAXPATHLEN); | |
| 3396 swarg = kmem_alloc(sizeof (*swarg), KM_NOSLEEP); | |
| 3397 if (swarg == NULL) { | |
| 3398 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_handle_ext_fo: " | |
| 3399 "request packet allocation for %s failed....\n", | |
| 3400 vlun->svl_lun_wwn)); | |
| 3401 VHCI_RELEASE_LUN(vlun); | |
| 3402 return (PKT_RETURN); | |
| 3403 } | |
| 3404 swarg->svs_svp = svp; | |
| 3405 swarg->svs_tos = ddi_get_time(); | |
| 3406 swarg->svs_pi = vpkt->vpkt_path; | |
| 3407 swarg->svs_release_lun = 0; | |
| 3408 swarg->svs_done = 0; | |
| 3409 /* | |
| 3410 * place a hold on the path...we don't want it to | |
| 3411 * vanish while scsi_watch is in progress | |
| 3412 */ | |
| 3413 mdi_hold_path(vpkt->vpkt_path); | |
| 3414 svp->svp_sw_token = scsi_watch_request_submit(svp->svp_psd, | |
| 3415 VHCI_FOWATCH_INTERVAL, SENSE_LENGTH, vhci_efo_watch_cb, | |
| 3416 (caddr_t)swarg); | |
| 3417 } | |
| 3418 return (BUSY_RETURN); | |
| 3419 } | |
| 3420 | |
| 3421 /* | |
| 3422 * vhci_efo_watch_cb: | |
| 3423 * Callback from scsi_watch request to check the failover status. | |
| 3424 * Completion is either due to successful failover or timeout. | |
| 3425 * Upon successful completion, vhci_update_path_states is called. | |
| 3426 * For timeout condition, vhci_efo_done is called. | |
| 3427 * Always returns 0 to scsi_watch to keep retrying till vhci_efo_done | |
| 3428 * terminates this request properly in a separate thread. | |
| 3429 */ | |
| 3430 | |
| 3431 static int | |
| 3432 vhci_efo_watch_cb(caddr_t arg, struct scsi_watch_result *resultp) | |
| 3433 { | |
| 3434 struct scsi_status *statusp = resultp->statusp; | |
| 3435 struct scsi_extended_sense *sensep = resultp->sensep; | |
| 3436 struct scsi_pkt *pkt = resultp->pkt; | |
| 3437 scsi_vhci_swarg_t *swarg; | |
| 3438 scsi_vhci_priv_t *svp; | |
| 3439 scsi_vhci_lun_t *vlun; | |
| 3440 struct scsi_vhci *vhci; | |
| 3441 dev_info_t *vdip; | |
| 3442 int rval, updt_paths; | |
| 3443 | |
| 3444 swarg = (scsi_vhci_swarg_t *)(uintptr_t)arg; | |
| 3445 svp = swarg->svs_svp; | |
| 3446 if (swarg->svs_done) { | |
| 3447 /* | |
| 3448 * Already completed failover or timedout. | |
| 3449 * Waiting for vhci_efo_done to terminate this scsi_watch. | |
| 3450 */ | |
| 3451 return (0); | |
| 3452 } | |
| 3453 | |
| 3454 ASSERT(svp != NULL); | |
| 3455 vlun = svp->svp_svl; | |
| 3456 ASSERT(vlun != NULL); | |
| 3457 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 3458 vlun->svl_efo_update_path = 0; | |
| 3459 vdip = ddi_get_parent(vlun->svl_dip); | |
| 3460 vhci = ddi_get_soft_state(vhci_softstate, | |
| 3461 ddi_get_instance(vdip)); | |
| 3462 | |
| 3463 updt_paths = 0; | |
| 3464 | |
| 3465 if (pkt->pkt_reason != CMD_CMPLT) { | |
| 3466 if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) { | |
| 3467 swarg->svs_release_lun = 1; | |
| 3468 goto done; | |
| 3469 } | |
| 3470 return (0); | |
| 3471 } | |
| 3472 if (*((unsigned char *)statusp) == STATUS_CHECK) { | |
| 3473 rval = (*(vlun->svl_fops->sfo_analyze_sense)) | |
| 3474 (svp->svp_psd, sensep, vlun->svl_fops_ctpriv); | |
| 3475 switch (rval) { | |
| 3476 /* | |
| 3477 * Only update path states in case path is definitely | |
| 3478 * inactive, or no failover occurred. For all other | |
| 3479 * check conditions continue pinging. A unexpected | |
| 3480 * check condition shouldn't cause pinging to complete | |
| 3481 * prematurely. | |
| 3482 */ | |
| 3483 case SCSI_SENSE_INACTIVE: | |
| 3484 case SCSI_SENSE_NOFAILOVER: | |
| 3485 updt_paths = 1; | |
| 3486 break; | |
| 3487 default: | |
| 3488 if ((ddi_get_time() - swarg->svs_tos) | |
| 3489 >= VHCI_EXTFO_TIMEOUT) { | |
| 3490 swarg->svs_release_lun = 1; | |
| 3491 goto done; | |
| 3492 } | |
| 3493 return (0); | |
| 3494 } | |
| 3495 } else if (*((unsigned char *)statusp) == | |
| 3496 STATUS_RESERVATION_CONFLICT) { | |
| 3497 updt_paths = 1; | |
| 3498 } else if ((*((unsigned char *)statusp)) & | |
| 3499 (STATUS_BUSY | STATUS_QFULL)) { | |
| 3500 return (0); | |
| 3501 } | |
| 3502 if ((*((unsigned char *)statusp) == STATUS_GOOD) || | |
| 3503 (updt_paths == 1)) { | |
| 3504 /* | |
| 3505 * we got here because we had detected an | |
| 3506 * externally initiated failover; things | |
| 3507 * have settled down now, so let's | |
| 3508 * start up a task to update the | |
| 3509 * path states and target port group | |
| 3510 */ | |
| 3511 vlun->svl_efo_update_path = 1; | |
| 3512 swarg->svs_done = 1; | |
| 3513 vlun->svl_swarg = swarg; | |
| 3514 vlun->svl_flags |= VLUN_UPDATE_TPG; | |
| 3515 (void) taskq_dispatch(vhci->vhci_update_pathstates_taskq, | |
| 3516 vhci_update_pathstates, (void *)vlun, | |
| 3517 KM_SLEEP); | |
| 3518 return (0); | |
| 3519 } | |
| 3520 if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) { | |
| 3521 swarg->svs_release_lun = 1; | |
| 3522 goto done; | |
| 3523 } | |
| 3524 return (0); | |
| 3525 done: | |
| 3526 swarg->svs_done = 1; | |
| 3527 (void) taskq_dispatch(vhci->vhci_taskq, | |
| 3528 vhci_efo_done, (void *)swarg, KM_SLEEP); | |
| 3529 return (0); | |
| 3530 } | |
| 3531 | |
| 3532 /* | |
| 3533 * vhci_efo_done: | |
| 3534 * cleanly terminates scsi_watch and free up resources. | |
| 3535 * Called as taskq function in vhci_efo_watch_cb for EFO timeout condition | |
| 3536 * or by vhci_update_path_states invoked during external initiated | |
| 3537 * failover completion. | |
| 3538 */ | |
| 3539 static void | |
| 3540 vhci_efo_done(void *arg) | |
| 3541 { | |
| 3542 scsi_vhci_lun_t *vlun; | |
| 3543 scsi_vhci_swarg_t *swarg = (scsi_vhci_swarg_t *)arg; | |
| 3544 scsi_vhci_priv_t *svp = swarg->svs_svp; | |
| 3545 ASSERT(svp); | |
| 3546 | |
| 3547 vlun = svp->svp_svl; | |
| 3548 ASSERT(vlun); | |
| 3549 | |
| 3550 /* Wait for clean termination of scsi_watch */ | |
| 3551 (void) scsi_watch_request_terminate(svp->svp_sw_token, | |
| 3552 SCSI_WATCH_TERMINATE_WAIT); | |
| 3553 svp->svp_sw_token = NULL; | |
| 3554 | |
| 3555 /* release path and freeup resources to indicate failover completion */ | |
| 3556 mdi_rele_path(swarg->svs_pi); | |
| 3557 if (swarg->svs_release_lun) { | |
| 3558 VHCI_RELEASE_LUN(vlun); | |
| 3559 } | |
| 3560 kmem_free((void *)swarg, sizeof (*swarg)); | |
| 3561 } | |
| 3562 | |
| 3563 /* | |
| 3564 * Update the path states | |
| 3565 * vlun should be HELD when this is invoked. | |
| 3566 * Calls vhci_efo_done to cleanup resources allocated for EFO. | |
| 3567 */ | |
| 3568 void | |
| 3569 vhci_update_pathstates(void *arg) | |
| 3570 { | |
| 3571 mdi_pathinfo_t *pip, *npip; | |
| 3572 dev_info_t *dip, *pdip; | |
| 3573 struct scsi_failover_ops *fo; | |
| 3574 struct scsi_vhci_priv *svp; | |
| 3575 struct scsi_device *psd; | |
| 3576 struct scsi_path_opinfo opinfo; | |
| 3577 char *pclass, *tptr; | |
| 3578 struct scsi_vhci_lun *vlun = (struct scsi_vhci_lun *)arg; | |
| 3579 int sps; /* mdi_select_path() status */ | |
| 3580 char *cpath, *dpath; | |
| 3581 struct scsi_vhci *vhci; | |
| 3582 struct scsi_pkt *pkt; | |
| 3583 struct buf *bp; | |
| 3584 int reserve_conflict = 0; | |
| 3585 | |
| 3586 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 3587 dip = vlun->svl_dip; | |
| 3588 pip = npip = NULL; | |
| 3589 | |
| 3590 vhci = ddi_get_soft_state(vhci_softstate, | |
| 3591 ddi_get_instance(ddi_get_parent(dip))); | |
| 3592 | |
| 3593 sps = mdi_select_path(dip, NULL, (MDI_SELECT_ONLINE_PATH | | |
| 3594 MDI_SELECT_STANDBY_PATH), NULL, &npip); | |
| 3595 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
| 3596 goto done; | |
| 3597 } | |
| 3598 | |
| 3599 fo = vlun->svl_fops; | |
| 3600 do { | |
| 3601 pip = npip; | |
| 3602 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 3603 psd = svp->svp_psd; | |
| 3604 if ((*fo->sfo_path_get_opinfo)(psd, &opinfo, | |
| 3605 vlun->svl_fops_ctpriv) != 0) { | |
| 3606 sps = mdi_select_path(dip, NULL, | |
| 3607 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 3608 pip, &npip); | |
| 3609 mdi_rele_path(pip); | |
| 3610 continue; | |
| 3611 } | |
| 3612 | |
| 3613 if (mdi_prop_lookup_string(pip, "path-class", &pclass) != | |
| 3614 MDI_SUCCESS) { | |
| 3615 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3616 "!vhci_update_pathstates: prop lookup failed for " | |
| 3617 "path 0x%p\n", (void *)pip)); | |
| 3618 sps = mdi_select_path(dip, NULL, | |
| 3619 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 3620 pip, &npip); | |
| 3621 mdi_rele_path(pip); | |
| 3622 continue; | |
| 3623 } | |
| 3624 | |
| 3625 /* | |
| 3626 * Need to update the "path-class" property | |
| 3627 * value in the device tree if different | |
| 3628 * from the existing value. | |
| 3629 */ | |
| 3630 if (strcmp(pclass, opinfo.opinfo_path_attr) != 0) { | |
| 3631 (void) mdi_prop_update_string(pip, "path-class", | |
| 3632 opinfo.opinfo_path_attr); | |
| 3633 } | |
| 3634 | |
| 3635 /* | |
| 3636 * Only change the state if needed. i.e. Don't call | |
| 3637 * mdi_pi_set_state to ONLINE a path if its already | |
| 3638 * ONLINE. Same for STANDBY paths. | |
| 3639 */ | |
| 3640 | |
| 3641 if ((opinfo.opinfo_path_state == SCSI_PATH_ACTIVE || | |
| 3642 opinfo.opinfo_path_state == SCSI_PATH_ACTIVE_NONOPT)) { | |
| 3643 if (!(MDI_PI_IS_ONLINE(pip))) { | |
| 3644 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3645 "!vhci_update_pathstates: marking path" | |
| 3646 " 0x%p as ONLINE\n", (void *)pip)); | |
| 3647 pdip = mdi_pi_get_phci(pip); | |
| 3648 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3649 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3650 vhci_log(CE_NOTE, ddi_get_parent(dip), "!%s" | |
| 3651 " (%s%d): path %s (%s%d) target address %s" | |
| 3652 " is now ONLINE because of" | |
| 3653 " an externally initiated failover", | |
| 3654 ddi_pathname(dip, cpath), | |
| 3655 ddi_driver_name(dip), | |
| 3656 ddi_get_instance(dip), | |
| 3657 ddi_pathname(pdip, dpath), | |
| 3658 ddi_driver_name(pdip), | |
| 3659 ddi_get_instance(pdip), | |
| 3660 mdi_pi_get_addr(pip)); | |
| 3661 kmem_free(cpath, MAXPATHLEN); | |
| 3662 kmem_free(dpath, MAXPATHLEN); | |
| 3663 mdi_pi_set_state(pip, | |
| 3664 MDI_PATHINFO_STATE_ONLINE); | |
| 3665 mdi_pi_set_preferred(pip, | |
| 3666 opinfo.opinfo_preferred); | |
| 3667 tptr = kmem_alloc(strlen | |
| 3668 (opinfo.opinfo_path_attr)+1, KM_SLEEP); | |
| 3669 (void) strlcpy(tptr, opinfo.opinfo_path_attr, | |
| 3670 (strlen(opinfo.opinfo_path_attr)+1)); | |
| 3671 mutex_enter(&vlun->svl_mutex); | |
| 3672 if (vlun->svl_active_pclass != NULL) { | |
| 3673 kmem_free(vlun->svl_active_pclass, | |
| 3674 strlen(vlun->svl_active_pclass)+1); | |
| 3675 } | |
| 3676 vlun->svl_active_pclass = tptr; | |
| 3677 if (vlun->svl_waiting_for_activepath) { | |
| 3678 vlun->svl_waiting_for_activepath = 0; | |
| 3679 } | |
| 3680 mutex_exit(&vlun->svl_mutex); | |
| 3681 /* Check for Reservation Conflict */ | |
| 3682 bp = scsi_alloc_consistent_buf( | |
| 3683 &svp->svp_psd->sd_address, | |
| 3684 (struct buf *)NULL, DEV_BSIZE, B_READ, | |
| 3685 NULL, NULL); | |
| 3686 if (!bp) { | |
| 3687 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3688 "vhci_update_pathstates: " | |
| 3689 "!No resources (buf)\n")); | |
| 3690 mdi_rele_path(pip); | |
| 3691 goto done; | |
| 3692 } | |
| 3693 pkt = scsi_init_pkt(&svp->svp_psd->sd_address, | |
| 3694 NULL, bp, CDB_GROUP1, | |
| 3695 sizeof (struct scsi_arq_status), 0, | |
| 3696 PKT_CONSISTENT, NULL, NULL); | |
| 3697 if (pkt) { | |
| 3698 (void) scsi_setup_cdb((union scsi_cdb *) | |
| 3699 (uintptr_t)pkt->pkt_cdbp, | |
| 3700 SCMD_READ, 1, 1, 0); | |
| 3701 pkt->pkt_time = 3*30; | |
| 3702 pkt->pkt_flags = FLAG_NOINTR; | |
| 3703 if ((scsi_transport(pkt) == | |
| 3704 TRAN_ACCEPT) && (pkt->pkt_reason | |
| 3705 == CMD_CMPLT) && (SCBP_C(pkt) == | |
| 3706 STATUS_RESERVATION_CONFLICT)) { | |
| 3707 reserve_conflict = 1; | |
| 3708 } | |
| 3709 scsi_destroy_pkt(pkt); | |
| 3710 } | |
| 3711 scsi_free_consistent_buf(bp); | |
| 3712 } else if (MDI_PI_IS_ONLINE(pip)) { | |
| 3713 if (strcmp(pclass, opinfo.opinfo_path_attr) | |
| 3714 != 0) { | |
| 3715 mdi_pi_set_preferred(pip, | |
| 3716 opinfo.opinfo_preferred); | |
| 3717 mutex_enter(&vlun->svl_mutex); | |
| 3718 if (vlun->svl_active_pclass == NULL || | |
| 3719 strcmp(opinfo.opinfo_path_attr, | |
| 3720 vlun->svl_active_pclass) != 0) { | |
| 3721 mutex_exit(&vlun->svl_mutex); | |
| 3722 tptr = kmem_alloc(strlen | |
| 3723 (opinfo.opinfo_path_attr)+1, | |
| 3724 KM_SLEEP); | |
| 3725 (void) strlcpy(tptr, | |
| 3726 opinfo.opinfo_path_attr, | |
| 3727 (strlen | |
| 3728 (opinfo.opinfo_path_attr) | |
| 3729 +1)); | |
| 3730 mutex_enter(&vlun->svl_mutex); | |
| 3731 } else { | |
| 3732 /* | |
| 3733 * No need to update | |
| 3734 * svl_active_pclass | |
| 3735 */ | |
| 3736 tptr = NULL; | |
| 3737 mutex_exit(&vlun->svl_mutex); | |
| 3738 } | |
| 3739 if (tptr) { | |
| 3740 if (vlun->svl_active_pclass | |
| 3741 != NULL) { | |
| 3742 kmem_free(vlun-> | |
| 3743 svl_active_pclass, | |
| 3744 strlen(vlun-> | |
| 3745 svl_active_pclass) | |
| 3746 +1); | |
| 3747 } | |
| 3748 vlun->svl_active_pclass = tptr; | |
| 3749 mutex_exit(&vlun->svl_mutex); | |
| 3750 } | |
| 3751 } | |
| 3752 } | |
| 3753 } else if ((opinfo.opinfo_path_state == SCSI_PATH_INACTIVE) && | |
| 3754 !(MDI_PI_IS_STANDBY(pip))) { | |
| 3755 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3756 "!vhci_update_pathstates: marking path" | |
| 3757 " 0x%p as STANDBY\n", (void *)pip)); | |
| 3758 pdip = mdi_pi_get_phci(pip); | |
| 3759 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3760 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3761 vhci_log(CE_NOTE, ddi_get_parent(dip), "!%s" | |
| 3762 " (%s%d): path %s (%s%d) target address %s" | |
| 3763 " is now STANDBY because of" | |
| 3764 " an externally initiated failover", | |
| 3765 ddi_pathname(dip, cpath), | |
| 3766 ddi_driver_name(dip), | |
| 3767 ddi_get_instance(dip), | |
| 3768 ddi_pathname(pdip, dpath), | |
| 3769 ddi_driver_name(pdip), | |
| 3770 ddi_get_instance(pdip), | |
| 3771 mdi_pi_get_addr(pip)); | |
| 3772 kmem_free(cpath, MAXPATHLEN); | |
| 3773 kmem_free(dpath, MAXPATHLEN); | |
| 3774 mdi_pi_set_state(pip, | |
| 3775 MDI_PATHINFO_STATE_STANDBY); | |
| 3776 mdi_pi_set_preferred(pip, | |
| 3777 opinfo.opinfo_preferred); | |
| 3778 mutex_enter(&vlun->svl_mutex); | |
| 3779 if (vlun->svl_active_pclass != NULL) { | |
| 3780 if (strcmp(vlun->svl_active_pclass, | |
| 3781 opinfo.opinfo_path_attr) == 0) { | |
| 3782 kmem_free(vlun-> | |
| 3783 svl_active_pclass, | |
| 3784 strlen(vlun-> | |
| 3785 svl_active_pclass)+1); | |
| 3786 vlun->svl_active_pclass = NULL; | |
| 3787 } | |
| 3788 } | |
| 3789 mutex_exit(&vlun->svl_mutex); | |
| 3790 } | |
| 3791 (void) mdi_prop_free(pclass); | |
| 3792 sps = mdi_select_path(dip, NULL, | |
| 3793 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 3794 pip, &npip); | |
| 3795 mdi_rele_path(pip); | |
| 3796 | |
| 3797 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 3798 | |
| 3799 /* | |
| 3800 * Check to see if this vlun has an active SCSI-II RESERVE. If so | |
| 3801 * clear the reservation by sending a reset, so the host doesn't | |
| 3802 * receive a reservation conflict. | |
| 3803 * Reset VLUN_RESERVE_ACTIVE_FLG for this vlun. Also notify ssd | |
| 3804 * of the reset, explicitly. | |
| 3805 */ | |
| 3806 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 3807 if (reserve_conflict && (vlun->svl_xlf_capable == 0)) { | |
| 3808 (void) vhci_recovery_reset(vlun, | |
| 3809 &svp->svp_psd->sd_address, FALSE, | |
| 3810 VHCI_DEPTH_TARGET); | |
| 3811 } | |
| 3812 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 3813 mutex_enter(&vhci->vhci_mutex); | |
| 3814 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
| 3815 &vhci->vhci_reset_notify_listf); | |
| 3816 mutex_exit(&vhci->vhci_mutex); | |
| 3817 } | |
| 3818 if (vlun->svl_flags & VLUN_UPDATE_TPG) { | |
| 3819 /* | |
| 3820 * Update the AccessState of related MP-API TPGs | |
| 3821 */ | |
| 3822 (void) vhci_mpapi_update_tpg_acc_state_for_lu(vhci, vlun); | |
| 3823 vlun->svl_flags &= ~VLUN_UPDATE_TPG; | |
| 3824 } | |
| 3825 done: | |
| 3826 if (vlun->svl_efo_update_path) { | |
| 3827 vlun->svl_efo_update_path = 0; | |
| 3828 vhci_efo_done(vlun->svl_swarg); | |
| 3829 vlun->svl_swarg = 0; | |
| 3830 } | |
| 3831 VHCI_RELEASE_LUN(vlun); | |
| 3832 } | |
| 3833 | |
| 3834 /* ARGSUSED */ | |
| 3835 static int | |
| 3836 vhci_pathinfo_init(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 3837 { | |
| 3838 scsi_hba_tran_t *hba = NULL; | |
| 3839 struct scsi_device *psd = NULL; | |
| 3840 scsi_vhci_lun_t *vlun = NULL; | |
| 3841 dev_info_t *pdip = NULL; | |
| 3842 dev_info_t *tgt_dip; | |
| 3843 struct scsi_vhci *vhci; | |
| 3844 char *guid; | |
| 3845 scsi_vhci_priv_t *svp = NULL; | |
| 3846 int rval = MDI_FAILURE; | |
| 3847 int vlun_alloced = 0; | |
| 3848 | |
| 3849 ASSERT(vdip != NULL); | |
| 3850 ASSERT(pip != NULL); | |
| 3851 | |
| 3852 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 3853 ASSERT(vhci != NULL); | |
| 3854 | |
| 3855 pdip = mdi_pi_get_phci(pip); | |
| 3856 ASSERT(pdip != NULL); | |
| 3857 | |
| 3858 hba = ddi_get_driver_private(pdip); | |
| 3859 ASSERT(hba != NULL); | |
| 3860 | |
| 3861 tgt_dip = mdi_pi_get_client(pip); | |
| 3862 ASSERT(tgt_dip != NULL); | |
| 3863 | |
| 3864 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, | |
| 3865 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 3866 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3867 "vhci_pathinfo_init: lun guid property failed")); | |
| 3868 goto failure; | |
| 3869 } | |
| 3870 | |
| 3871 vlun = vhci_lun_lookup_alloc(tgt_dip, guid, &vlun_alloced); | |
| 3872 ddi_prop_free(guid); | |
| 3873 | |
| 3874 vlun->svl_dip = tgt_dip; | |
| 3875 | |
| 3876 svp = kmem_zalloc(sizeof (*svp), KM_SLEEP); | |
| 3877 svp->svp_svl = vlun; | |
| 3878 | |
| 3879 vlun->svl_lb_policy_save = mdi_get_lb_policy(tgt_dip); | |
| 3880 mutex_init(&svp->svp_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 3881 cv_init(&svp->svp_cv, NULL, CV_DRIVER, NULL); | |
| 3882 | |
| 3883 psd = kmem_zalloc(sizeof (*psd), KM_SLEEP); | |
| 3884 mutex_init(&psd->sd_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 3885 | |
| 3886 /* | |
| 3887 * Clone transport structure if requested, so | |
| 3888 * Self enumerating HBAs always need to use cloning | |
| 3889 */ | |
| 3890 | |
| 3891 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
| 3892 scsi_hba_tran_t *clone = | |
| 3893 kmem_alloc(sizeof (scsi_hba_tran_t), KM_SLEEP); | |
| 3894 bcopy(hba, clone, sizeof (scsi_hba_tran_t)); | |
| 3895 hba = clone; | |
| 3896 hba->tran_sd = psd; | |
| 3897 } else { | |
| 3898 ASSERT(hba->tran_sd == NULL); | |
| 3899 } | |
| 3900 psd->sd_dev = tgt_dip; | |
| 3901 psd->sd_address.a_hba_tran = hba; | |
| 3902 psd->sd_private = (caddr_t)pip; | |
| 3903 svp->svp_psd = psd; | |
| 3904 mdi_pi_set_vhci_private(pip, (caddr_t)svp); | |
| 3905 | |
| 3906 /* | |
| 3907 * call hba's target init entry point if it exists | |
| 3908 */ | |
| 3909 if (hba->tran_tgt_init != NULL) { | |
| 3910 if ((rval = (*hba->tran_tgt_init)(pdip, tgt_dip, | |
| 3911 hba, psd)) != DDI_SUCCESS) { | |
| 3912 VHCI_DEBUG(1, (CE_WARN, pdip, | |
| 3913 "!vhci_pathinfo_init: tran_tgt_init failed for " | |
| 3914 "path=0x%p rval=%x", (void *)pip, rval)); | |
| 3915 goto failure; | |
| 3916 } | |
| 3917 } | |
| 3918 | |
| 3919 svp->svp_new_path = 1; | |
| 3920 | |
| 3921 psd->sd_inq = NULL; | |
| 3922 | |
| 3923 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_pathinfo_init: path:%p\n", | |
| 3924 (void *)pip)); | |
| 3925 return (MDI_SUCCESS); | |
| 3926 | |
| 3927 failure: | |
| 3928 if (psd) { | |
| 3929 mutex_destroy(&psd->sd_mutex); | |
| 3930 kmem_free(psd, sizeof (*psd)); | |
| 3931 } | |
| 3932 if (svp) { | |
| 3933 mdi_pi_set_vhci_private(pip, NULL); | |
| 3934 mutex_destroy(&svp->svp_mutex); | |
| 3935 cv_destroy(&svp->svp_cv); | |
| 3936 kmem_free(svp, sizeof (*svp)); | |
| 3937 } | |
| 3938 if (hba && hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) | |
| 3939 kmem_free(hba, sizeof (scsi_hba_tran_t)); | |
| 3940 | |
| 3941 if (vlun_alloced) | |
| 3942 vhci_lun_free(tgt_dip); | |
| 3943 | |
| 3944 return (rval); | |
| 3945 } | |
| 3946 | |
| 3947 /* ARGSUSED */ | |
| 3948 static int | |
| 3949 vhci_pathinfo_uninit(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 3950 { | |
| 3951 scsi_hba_tran_t *hba = NULL; | |
| 3952 struct scsi_device *psd = NULL; | |
| 3953 dev_info_t *pdip = NULL; | |
| 3954 dev_info_t *cdip = NULL; | |
| 3955 scsi_vhci_priv_t *svp = NULL; | |
| 3956 | |
| 3957 ASSERT(vdip != NULL); | |
| 3958 ASSERT(pip != NULL); | |
| 3959 | |
| 3960 pdip = mdi_pi_get_phci(pip); | |
| 3961 ASSERT(pdip != NULL); | |
| 3962 | |
| 3963 cdip = mdi_pi_get_client(pip); | |
| 3964 ASSERT(cdip != NULL); | |
| 3965 | |
| 3966 hba = ddi_get_driver_private(pdip); | |
| 3967 ASSERT(hba != NULL); | |
| 3968 | |
| 3969 vhci_mpapi_set_path_state(vdip, pip, MP_DRVR_PATH_STATE_REMOVED); | |
| 3970 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 3971 if (svp == NULL) { | |
| 3972 /* path already freed. Nothing to do. */ | |
| 3973 return (MDI_SUCCESS); | |
| 3974 } | |
| 3975 | |
| 3976 psd = svp->svp_psd; | |
| 3977 ASSERT(psd != NULL); | |
| 3978 | |
| 3979 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
| 3980 hba = psd->sd_address.a_hba_tran; | |
| 3981 ASSERT(hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE); | |
| 3982 ASSERT(hba->tran_sd == psd); | |
| 3983 } else { | |
| 3984 ASSERT(hba->tran_sd == NULL); | |
| 3985 } | |
| 3986 | |
| 3987 if (hba->tran_tgt_free != NULL) { | |
| 3988 (*hba->tran_tgt_free) (pdip, cdip, hba, psd); | |
| 3989 } | |
| 3990 mutex_destroy(&psd->sd_mutex); | |
| 3991 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
| 3992 kmem_free(hba, sizeof (*hba)); | |
| 3993 } | |
| 3994 | |
| 3995 mdi_pi_set_vhci_private(pip, NULL); | |
| 3996 kmem_free((caddr_t)psd, sizeof (*psd)); | |
| 3997 | |
| 3998 mutex_destroy(&svp->svp_mutex); | |
| 3999 cv_destroy(&svp->svp_cv); | |
| 4000 kmem_free((caddr_t)svp, sizeof (*svp)); | |
| 4001 | |
| 4002 /* | |
| 4003 * If this is the last path to the client, | |
| 4004 * then free up the vlun as well. | |
| 4005 */ | |
| 4006 if (mdi_client_get_path_count(cdip) == 1) { | |
| 4007 vhci_lun_free(cdip); | |
| 4008 } | |
| 4009 | |
| 4010 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_pathinfo_uninit: path=0x%p\n", | |
| 4011 (void *)pip)); | |
| 4012 return (MDI_SUCCESS); | |
| 4013 } | |
| 4014 | |
| 4015 /* ARGSUSED */ | |
| 4016 static int | |
| 4017 vhci_pathinfo_state_change(dev_info_t *vdip, mdi_pathinfo_t *pip, | |
| 4018 mdi_pathinfo_state_t state, uint32_t ext_state, int flags) | |
| 4019 { | |
| 4020 int rval = MDI_SUCCESS; | |
| 4021 scsi_vhci_priv_t *svp; | |
| 4022 scsi_vhci_lun_t *vlun; | |
| 4023 int held; | |
| 4024 int op = (flags & 0xf00) >> 8; | |
| 4025 struct scsi_vhci *vhci; | |
| 4026 | |
| 4027 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 4028 | |
| 4029 if (flags & MDI_EXT_STATE_CHANGE) { | |
| 4030 /* | |
| 4031 * We do not want to issue any commands down the path in case | |
| 4032 * sync flag is set. Lower layers might not be ready to accept | |
| 4033 * any I/O commands. | |
| 4034 */ | |
| 4035 if (op == DRIVER_DISABLE) | |
| 4036 return (MDI_SUCCESS); | |
| 4037 | |
| 4038 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 4039 if (svp == NULL) { | |
| 4040 return (MDI_FAILURE); | |
| 4041 } | |
| 4042 vlun = svp->svp_svl; | |
| 4043 | |
| 4044 if (flags & MDI_BEFORE_STATE_CHANGE) { | |
| 4045 /* | |
| 4046 * Hold the LUN. | |
| 4047 */ | |
| 4048 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
| 4049 if (flags & MDI_DISABLE_OP) { | |
| 4050 /* | |
| 4051 * Issue scsi reset if it happens to be | |
| 4052 * reserved path. | |
| 4053 */ | |
| 4054 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 4055 /* | |
| 4056 * if reservation pending on | |
| 4057 * this path, dont' mark the | |
| 4058 * path busy | |
| 4059 */ | |
| 4060 if (op == DRIVER_DISABLE_TRANSIENT) { | |
| 4061 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 4062 "!vhci_pathinfo" | |
| 4063 "_state_change (pip:%p): " | |
| 4064 " reservation: fail busy\n", | |
| 4065 (void *)pip)); | |
| 4066 return (MDI_FAILURE); | |
| 4067 } | |
| 4068 if (pip == vlun->svl_resrv_pip) { | |
| 4069 if (vhci_recovery_reset( | |
| 4070 svp->svp_svl, | |
| 4071 &svp->svp_psd->sd_address, | |
| 4072 TRUE, | |
| 4073 VHCI_DEPTH_TARGET) == 0) { | |
| 4074 VHCI_DEBUG(1, | |
| 4075 (CE_NOTE, NULL, | |
| 4076 "!vhci_pathinfo" | |
| 4077 "_state_change " | |
| 4078 " (pip:%p): " | |
| 4079 "reset failed, " | |
| 4080 "give up!\n", | |
| 4081 (void *)pip)); | |
| 4082 } | |
| 4083 vlun->svl_flags &= | |
| 4084 ~VLUN_RESERVE_ACTIVE_FLG; | |
| 4085 } | |
| 4086 } | |
| 4087 } else if (flags & MDI_ENABLE_OP) { | |
| 4088 if (((vhci->vhci_conf_flags & | |
| 4089 VHCI_CONF_FLAGS_AUTO_FAILBACK) == | |
| 4090 VHCI_CONF_FLAGS_AUTO_FAILBACK) && | |
| 4091 MDI_PI_IS_USER_DISABLE(pip) && | |
| 4092 MDI_PI_IS_STANDBY(pip)) { | |
| 4093 struct scsi_failover_ops *fo; | |
| 4094 char *best_pclass, *pclass = NULL; | |
| 4095 int best_class, rv; | |
| 4096 /* | |
| 4097 * Failback if enabling a standby path | |
| 4098 * and it is the primary class or | |
| 4099 * preferred class | |
| 4100 */ | |
| 4101 best_class = mdi_pi_get_preferred(pip); | |
| 4102 if (best_class == 0) { | |
| 4103 /* | |
| 4104 * if not preferred - compare | |
| 4105 * path-class with class | |
| 4106 */ | |
| 4107 fo = vlun->svl_fops; | |
| 4108 (*fo->sfo_pathclass_next)(NULL, | |
| 4109 &best_pclass, | |
| 4110 vlun->svl_fops_ctpriv); | |
| 4111 pclass = NULL; | |
| 4112 rv = mdi_prop_lookup_string(pip, | |
| 4113 "path-class", &pclass); | |
| 4114 if (rv != MDI_SUCCESS || | |
| 4115 pclass == NULL) { | |
| 4116 vhci_log(CE_NOTE, vdip, | |
| 4117 "!path-class " | |
| 4118 " lookup " | |
| 4119 "failed. rv: %d" | |
| 4120 "class: %p", rv, | |
| 4121 (void *)pclass); | |
| 4122 } else if (strncmp(pclass, | |
| 4123 best_pclass, | |
| 4124 strlen(best_pclass)) == 0) { | |
| 4125 best_class = 1; | |
| 4126 } | |
| 4127 if (rv == MDI_SUCCESS && | |
| 4128 pclass != NULL) { | |
| 4129 rv = mdi_prop_free( | |
| 4130 pclass); | |
| 4131 if (rv != | |
| 4132 DDI_PROP_SUCCESS) { | |
| 4133 vhci_log( | |
| 4134 CE_NOTE, | |
| 4135 vdip, | |
| 4136 "!path-" | |
| 4137 "class" | |
| 4138 " free" | |
| 4139 " failed" | |
| 4140 " rv: %d" | |
| 4141 " class: " | |
| 4142 "%p", | |
| 4143 rv, | |
| 4144 (void *) | |
| 4145 pclass); | |
| 4146 } | |
| 4147 } | |
| 4148 } | |
| 4149 if (best_class == 1) { | |
| 4150 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 4151 "preferred path: %p " | |
| 4152 "USER_DISABLE->USER_ENABLE " | |
| 4153 "transition for lun %s\n", | |
| 4154 (void *)pip, | |
| 4155 vlun->svl_lun_wwn)); | |
| 4156 (void) taskq_dispatch( | |
| 4157 vhci->vhci_taskq, | |
| 4158 vhci_initiate_auto_failback, | |
| 4159 (void *) vlun, KM_SLEEP); | |
| 4160 } | |
| 4161 } | |
| 4162 /* | |
| 4163 * if PGR is active, revalidate key and | |
| 4164 * register on this path also, if key is | |
| 4165 * still valid | |
| 4166 */ | |
| 4167 sema_p(&vlun->svl_pgr_sema); | |
| 4168 if (vlun->svl_pgr_active) | |
| 4169 (void) | |
| 4170 vhci_pgr_validate_and_register(svp); | |
| 4171 sema_v(&vlun->svl_pgr_sema); | |
| 4172 /* | |
| 4173 * Inform target driver about any | |
| 4174 * reservations to be reinstated if target | |
| 4175 * has dropped reservation during the busy | |
| 4176 * period. | |
| 4177 */ | |
| 4178 mutex_enter(&vhci->vhci_mutex); | |
| 4179 scsi_hba_reset_notify_callback( | |
| 4180 &vhci->vhci_mutex, | |
| 4181 &vhci->vhci_reset_notify_listf); | |
| 4182 mutex_exit(&vhci->vhci_mutex); | |
| 4183 } | |
| 4184 } | |
| 4185 if (flags & MDI_AFTER_STATE_CHANGE) { | |
| 4186 if (flags & MDI_ENABLE_OP) { | |
| 4187 mutex_enter(&vhci_global_mutex); | |
| 4188 cv_broadcast(&vhci_cv); | |
| 4189 mutex_exit(&vhci_global_mutex); | |
| 4190 } | |
| 4191 if (vlun->svl_setcap_done) { | |
| 4192 (void) vhci_pHCI_cap(&svp->svp_psd->sd_address, | |
| 4193 "sector-size", vlun->svl_sector_size, | |
| 4194 1, pip); | |
| 4195 } | |
| 4196 | |
| 4197 /* | |
| 4198 * Release the LUN | |
| 4199 */ | |
| 4200 VHCI_RELEASE_LUN(vlun); | |
| 4201 | |
| 4202 /* | |
| 4203 * Path transition is complete. | |
| 4204 * Run callback to indicate target driver to | |
| 4205 * retry to prevent IO starvation. | |
| 4206 */ | |
| 4207 if (scsi_callback_id != 0) { | |
| 4208 ddi_run_callback(&scsi_callback_id); | |
| 4209 } | |
| 4210 } | |
| 4211 } else { | |
| 4212 switch (state) { | |
| 4213 case MDI_PATHINFO_STATE_ONLINE: | |
| 4214 rval = vhci_pathinfo_online(vdip, pip, flags); | |
| 4215 break; | |
| 4216 | |
| 4217 case MDI_PATHINFO_STATE_OFFLINE: | |
| 4218 rval = vhci_pathinfo_offline(vdip, pip, flags); | |
| 4219 break; | |
| 4220 | |
| 4221 default: | |
| 4222 break; | |
| 4223 } | |
| 4224 /* | |
| 4225 * Path transition is complete. | |
| 4226 * Run callback to indicate target driver to | |
| 4227 * retry to prevent IO starvation. | |
| 4228 */ | |
| 4229 if ((rval == MDI_SUCCESS) && (scsi_callback_id != 0)) { | |
| 4230 ddi_run_callback(&scsi_callback_id); | |
| 4231 } | |
| 4232 return (rval); | |
| 4233 } | |
| 4234 | |
| 4235 return (MDI_SUCCESS); | |
| 4236 } | |
| 4237 | |
| 4238 /* | |
| 4239 * Parse the mpxio load balancing options. The datanameptr | |
| 4240 * will point to a string containing the load-balance-options value. | |
| 4241 * The load-balance-options value will be a property that | |
| 4242 * defines the load-balance algorithm and any arguments to that | |
| 4243 * algorithm. | |
| 4244 * For example: | |
| 4245 * device-type-mpxio-options-list= | |
| 4246 * "device-type=SUN SENA", "load-balance-options=logical-block-options" | |
| 4247 * "device-type=SUN SE6920", "round-robin-options"; | |
| 4248 * logical-block-options="load-balance=logical-block", "region-size=15"; | |
| 4249 * round-robin-options="load-balance=round-robin"; | |
| 4250 * | |
| 4251 * If the load-balance is not defined the load balance algorithm will | |
| 4252 * default to the global setting. There will be default values assigned | |
| 4253 * to the arguments (region-size=18) and if an argument is one | |
| 4254 * that is not known, it will be ignored. | |
| 4255 */ | |
| 4256 static void | |
| 4257 vhci_parse_mpxio_lb_options(dev_info_t *dip, dev_info_t *cdip, | |
| 4258 caddr_t datanameptr) | |
| 4259 { | |
| 4260 char *dataptr, *next_entry; | |
| 4261 caddr_t config_list = NULL; | |
| 4262 int config_list_len = 0, list_len = 0; | |
| 4263 int region_size = -1; | |
| 4264 client_lb_t load_balance; | |
| 4265 | |
| 4266 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, datanameptr, | |
| 4267 (caddr_t)&config_list, &config_list_len) != DDI_PROP_SUCCESS) { | |
| 4268 return; | |
| 4269 } | |
| 4270 | |
| 4271 list_len = config_list_len; | |
| 4272 next_entry = config_list; | |
| 4273 while (config_list_len > 0) { | |
| 4274 dataptr = next_entry; | |
| 4275 | |
| 4276 if (strncmp(mdi_load_balance, dataptr, | |
| 4277 strlen(mdi_load_balance)) == 0) { | |
| 4278 /* get the load-balance scheme */ | |
| 4279 dataptr += strlen(mdi_load_balance) + 1; | |
| 4280 if (strcmp(dataptr, LOAD_BALANCE_PROP_RR) == 0) { | |
| 4281 (void) mdi_set_lb_policy(cdip, LOAD_BALANCE_RR); | |
| 4282 load_balance = LOAD_BALANCE_RR; | |
| 4283 } else if (strcmp(dataptr, | |
| 4284 LOAD_BALANCE_PROP_LBA) == 0) { | |
| 4285 (void) mdi_set_lb_policy(cdip, | |
| 4286 LOAD_BALANCE_LBA); | |
| 4287 load_balance = LOAD_BALANCE_LBA; | |
| 4288 } else if (strcmp(dataptr, | |
| 4289 LOAD_BALANCE_PROP_NONE) == 0) { | |
| 4290 (void) mdi_set_lb_policy(cdip, | |
| 4291 LOAD_BALANCE_NONE); | |
| 4292 load_balance = LOAD_BALANCE_NONE; | |
| 4293 } | |
| 4294 } else if (strncmp(dataptr, LOGICAL_BLOCK_REGION_SIZE, | |
| 4295 strlen(LOGICAL_BLOCK_REGION_SIZE)) == 0) { | |
| 4296 int i = 0; | |
| 4297 char *ptr; | |
| 4298 char *tmp; | |
| 4299 | |
| 4300 tmp = dataptr + (strlen(LOGICAL_BLOCK_REGION_SIZE) + 1); | |
| 4301 /* check for numeric value */ | |
| 4302 for (ptr = tmp; i < strlen(tmp); i++, ptr++) { | |
| 4303 if (!isdigit(*ptr)) { | |
| 4304 cmn_err(CE_WARN, | |
| 4305 "Illegal region size: %s." | |
| 4306 " Setting to default value: %d", | |
| 4307 tmp, | |
| 4308 LOAD_BALANCE_DEFAULT_REGION_SIZE); | |
| 4309 region_size = | |
| 4310 LOAD_BALANCE_DEFAULT_REGION_SIZE; | |
| 4311 break; | |
| 4312 } | |
| 4313 } | |
| 4314 if (i >= strlen(tmp)) { | |
| 4315 region_size = stoi(&tmp); | |
| 4316 } | |
| 4317 (void) mdi_set_lb_region_size(cdip, region_size); | |
| 4318 } | |
| 4319 config_list_len -= (strlen(next_entry) + 1); | |
| 4320 next_entry += strlen(next_entry) + 1; | |
| 4321 } | |
| 4322 #ifdef DEBUG | |
| 4323 if ((region_size >= 0) && (load_balance != LOAD_BALANCE_LBA)) { | |
| 4324 VHCI_DEBUG(1, (CE_NOTE, dip, | |
| 4325 "!vhci_parse_mpxio_lb_options: region-size: %d" | |
| 4326 "only valid for load-balance=logical-block\n", | |
| 4327 region_size)); | |
| 4328 } | |
| 4329 #endif | |
| 4330 if ((region_size == -1) && (load_balance == LOAD_BALANCE_LBA)) { | |
| 4331 VHCI_DEBUG(1, (CE_NOTE, dip, | |
| 4332 "!vhci_parse_mpxio_lb_options: No region-size" | |
| 4333 " defined load-balance=logical-block." | |
| 4334 " Default to: %d\n", LOAD_BALANCE_DEFAULT_REGION_SIZE)); | |
| 4335 (void) mdi_set_lb_region_size(cdip, | |
| 4336 LOAD_BALANCE_DEFAULT_REGION_SIZE); | |
| 4337 } | |
| 4338 if (list_len > 0) { | |
| 4339 kmem_free(config_list, list_len); | |
| 4340 } | |
| 4341 } | |
| 4342 | |
| 4343 /* | |
| 4344 * Parse the device-type-mpxio-options-list looking for the key of | |
| 4345 * "load-balance-options". If found, parse the load balancing options. | |
| 4346 * Check the comment of the vhci_get_device_type_mpxio_options() | |
| 4347 * for the device-type-mpxio-options-list. | |
| 4348 */ | |
| 4349 static void | |
| 4350 vhci_parse_mpxio_options(dev_info_t *dip, dev_info_t *cdip, | |
| 4351 caddr_t datanameptr, int list_len) | |
| 4352 { | |
| 4353 char *dataptr; | |
| 4354 int len; | |
| 4355 | |
| 4356 /* | |
| 4357 * get the data list | |
| 4358 */ | |
| 4359 dataptr = datanameptr; | |
| 4360 len = 0; | |
| 4361 while (len < list_len && | |
| 4362 strncmp(dataptr, DEVICE_TYPE_STR, strlen(DEVICE_TYPE_STR)) | |
| 4363 != 0) { | |
| 4364 if (strncmp(dataptr, LOAD_BALANCE_OPTIONS, | |
| 4365 strlen(LOAD_BALANCE_OPTIONS)) == 0) { | |
| 4366 len += strlen(LOAD_BALANCE_OPTIONS) + 1; | |
| 4367 dataptr += strlen(LOAD_BALANCE_OPTIONS) + 1; | |
| 4368 vhci_parse_mpxio_lb_options(dip, cdip, dataptr); | |
| 4369 } | |
| 4370 len += strlen(dataptr) + 1; | |
| 4371 dataptr += strlen(dataptr) + 1; | |
| 4372 } | |
| 4373 } | |
| 4374 | |
| 4375 /* | |
| 4376 * Check the inquriy string returned from the device wiith the device-type | |
| 4377 * Check for the existence of the device-type-mpxio-options-list and | |
| 4378 * if found parse the list checking for a match with the device-type | |
| 4379 * value and the inquiry string returned from the device. If a match | |
| 4380 * is found, parse the mpxio options list. The format of the | |
| 4381 * device-type-mpxio-options-list is: | |
| 4382 * device-type-mpxio-options-list= | |
| 4383 * "device-type=SUN SENA", "load-balance-options=logical-block-options" | |
| 4384 * "device-type=SUN SE6920", "round-robin-options"; | |
| 4385 * logical-block-options="load-balance=logical-block", "region-size=15"; | |
| 4386 * round-robin-options="load-balance=round-robin"; | |
| 4387 */ | |
| 4388 void | |
| 4389 vhci_get_device_type_mpxio_options(dev_info_t *dip, dev_info_t *cdip, | |
| 4390 struct scsi_device *devp) | |
| 4391 { | |
| 4392 | |
| 4393 caddr_t config_list = NULL; | |
| 4394 caddr_t vidptr, datanameptr; | |
| 4395 int vidlen, dupletlen = 0; | |
| 4396 int config_list_len = 0, len; | |
| 4397 struct scsi_inquiry *inq = devp->sd_inq; | |
| 4398 | |
| 4399 /* | |
| 4400 * look up the device-type-mpxio-options-list and walk thru | |
| 4401 * the list compare the vendor ids of the earlier inquiry command and | |
| 4402 * with those vids in the list if there is a match, lookup | |
| 4403 * the mpxio-options value | |
| 4404 */ | |
| 4405 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, | |
| 4406 MPXIO_OPTIONS_LIST, | |
| 4407 (caddr_t)&config_list, &config_list_len) == DDI_PROP_SUCCESS) { | |
| 4408 | |
| 4409 /* | |
| 4410 * Compare vids in each duplet - if it matches, | |
| 4411 * parse the mpxio options list. | |
| 4412 */ | |
| 4413 for (len = config_list_len, vidptr = config_list; len > 0; | |
| 4414 len -= dupletlen) { | |
| 4415 | |
| 4416 dupletlen = 0; | |
| 4417 | |
| 4418 if (strlen(vidptr) != 0 && | |
| 4419 strncmp(vidptr, DEVICE_TYPE_STR, | |
| 4420 strlen(DEVICE_TYPE_STR)) == 0) { | |
| 4421 /* point to next duplet */ | |
| 4422 datanameptr = vidptr + strlen(vidptr) + 1; | |
| 4423 /* add len of this duplet */ | |
| 4424 dupletlen += strlen(vidptr) + 1; | |
| 4425 /* get to device type */ | |
| 4426 vidptr += strlen(DEVICE_TYPE_STR) + 1; | |
| 4427 vidlen = strlen(vidptr); | |
| 4428 if ((vidlen != 0) && | |
| 4429 bcmp(inq->inq_vid, vidptr, vidlen) == 0) { | |
| 4430 vhci_parse_mpxio_options(dip, cdip, | |
| 4431 datanameptr, len - dupletlen); | |
| 4432 break; | |
| 4433 } | |
| 4434 /* get to next duplet */ | |
| 4435 vidptr += strlen(vidptr) + 1; | |
| 4436 } | |
| 4437 /* get to the next device-type */ | |
| 4438 while (len - dupletlen > 0 && | |
| 4439 strlen(vidptr) != 0 && | |
| 4440 strncmp(vidptr, DEVICE_TYPE_STR, | |
| 4441 strlen(DEVICE_TYPE_STR)) != 0) { | |
| 4442 dupletlen += strlen(vidptr) + 1; | |
| 4443 vidptr += strlen(vidptr) + 1; | |
| 4444 } | |
| 4445 } | |
| 4446 if (config_list_len > 0) { | |
| 4447 kmem_free(config_list, config_list_len); | |
| 4448 } | |
| 4449 } | |
| 4450 } | |
| 4451 | |
| 4452 static int | |
| 4453 vhci_update_pathinfo(struct scsi_device *psd, mdi_pathinfo_t *pip, | |
| 4454 struct scsi_failover_ops *fo, | |
| 4455 scsi_vhci_lun_t *vlun, | |
| 4456 struct scsi_vhci *vhci) | |
| 4457 { | |
| 4458 struct scsi_path_opinfo opinfo; | |
| 4459 char *pclass, *best_pclass; | |
| 4460 | |
| 4461 if ((*fo->sfo_path_get_opinfo)(psd, &opinfo, | |
| 4462 vlun->svl_fops_ctpriv) != 0) { | |
| 4463 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_update_pathinfo: " | |
| 4464 "Failed to get operation info for path:%p\n", (void *)pip)); | |
| 4465 return (MDI_FAILURE); | |
| 4466 } | |
| 4467 /* set the xlf capable flag in the vlun for future use */ | |
| 4468 vlun->svl_xlf_capable = opinfo.opinfo_xlf_capable; | |
| 4469 (void) mdi_prop_update_string(pip, "path-class", | |
| 4470 opinfo.opinfo_path_attr); | |
| 4471 | |
| 4472 pclass = opinfo.opinfo_path_attr; | |
| 4473 if (opinfo.opinfo_path_state == SCSI_PATH_ACTIVE) { | |
| 4474 mutex_enter(&vlun->svl_mutex); | |
| 4475 if (vlun->svl_active_pclass != NULL) { | |
| 4476 if (strcmp(vlun->svl_active_pclass, pclass) != 0) { | |
| 4477 mutex_exit(&vlun->svl_mutex); | |
| 4478 /* | |
| 4479 * Externally initiated failover has happened; | |
| 4480 * force the path state to be STANDBY/ONLINE, | |
| 4481 * next IO will trigger failover and thus | |
| 4482 * sync-up the pathstates. Reason we don't | |
| 4483 * sync-up immediately by invoking | |
| 4484 * vhci_update_pathstates() is because it | |
| 4485 * needs a VHCI_HOLD_LUN() and we don't | |
| 4486 * want to block here. | |
| 4487 * | |
| 4488 * Further, if the device is an ALUA device, | |
| 4489 * then failure to exactly match 'pclass' and | |
| 4490 * 'svl_active_pclass'(as is the case here) | |
| 4491 * indicates that the currently active path | |
| 4492 * is a 'non-optimized' path - which means | |
| 4493 * that 'svl_active_pclass' needs to be | |
| 4494 * replaced with opinfo.opinfo_path_state | |
| 4495 * value. | |
| 4496 */ | |
| 4497 | |
| 4498 if (SCSI_FAILOVER_IS_TPGS(vlun->svl_fops)) { | |
| 4499 char *tptr; | |
| 4500 | |
| 4501 /* | |
| 4502 * The device is ALUA compliant. The | |
| 4503 * state need to be changed to online | |
| 4504 * rather than standby state which is | |
| 4505 * done typically for a asymmetric | |
| 4506 * device that is non ALUA compliant. | |
| 4507 */ | |
| 4508 mdi_pi_set_state(pip, | |
| 4509 MDI_PATHINFO_STATE_ONLINE); | |
| 4510 tptr = kmem_alloc(strlen | |
| 4511 (opinfo.opinfo_path_attr)+1, | |
| 4512 KM_SLEEP); | |
| 4513 (void) strlcpy(tptr, | |
| 4514 opinfo.opinfo_path_attr, | |
| 4515 (strlen(opinfo.opinfo_path_attr) | |
| 4516 +1)); | |
| 4517 mutex_enter(&vlun->svl_mutex); | |
| 4518 kmem_free(vlun->svl_active_pclass, | |
| 4519 strlen(vlun->svl_active_pclass)+1); | |
| 4520 vlun->svl_active_pclass = tptr; | |
| 4521 mutex_exit(&vlun->svl_mutex); | |
| 4522 } else { | |
| 4523 /* | |
| 4524 * Non ALUA device case. | |
| 4525 */ | |
| 4526 mdi_pi_set_state(pip, | |
| 4527 MDI_PATHINFO_STATE_STANDBY); | |
| 4528 } | |
| 4529 vlun->svl_fo_support = opinfo.opinfo_mode; | |
| 4530 mdi_pi_set_preferred(pip, | |
| 4531 opinfo.opinfo_preferred); | |
| 4532 return (MDI_SUCCESS); | |
| 4533 } | |
| 4534 } else { | |
| 4535 char *tptr; | |
| 4536 | |
| 4537 /* | |
| 4538 * lets release the mutex before we try to | |
| 4539 * allocate since the potential to sleep is | |
| 4540 * possible. | |
| 4541 */ | |
| 4542 mutex_exit(&vlun->svl_mutex); | |
| 4543 tptr = kmem_alloc(strlen(pclass)+1, KM_SLEEP); | |
| 4544 (void) strlcpy(tptr, pclass, (strlen(pclass)+1)); | |
| 4545 mutex_enter(&vlun->svl_mutex); | |
| 4546 vlun->svl_active_pclass = tptr; | |
| 4547 } | |
| 4548 mutex_exit(&vlun->svl_mutex); | |
| 4549 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_ONLINE); | |
| 4550 vlun->svl_waiting_for_activepath = 0; | |
| 4551 } else if (opinfo.opinfo_path_state == SCSI_PATH_ACTIVE_NONOPT) { | |
| 4552 mutex_enter(&vlun->svl_mutex); | |
| 4553 if (vlun->svl_active_pclass == NULL) { | |
| 4554 char *tptr; | |
| 4555 | |
| 4556 mutex_exit(&vlun->svl_mutex); | |
| 4557 tptr = kmem_alloc(strlen(pclass)+1, KM_SLEEP); | |
| 4558 (void) strlcpy(tptr, pclass, (strlen(pclass)+1)); | |
| 4559 mutex_enter(&vlun->svl_mutex); | |
| 4560 vlun->svl_active_pclass = tptr; | |
| 4561 } | |
| 4562 mutex_exit(&vlun->svl_mutex); | |
| 4563 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_ONLINE); | |
| 4564 vlun->svl_waiting_for_activepath = 0; | |
| 4565 } else if (opinfo.opinfo_path_state == SCSI_PATH_INACTIVE) { | |
| 4566 mutex_enter(&vlun->svl_mutex); | |
| 4567 if (vlun->svl_active_pclass != NULL) { | |
| 4568 if (strcmp(vlun->svl_active_pclass, pclass) == 0) { | |
| 4569 mutex_exit(&vlun->svl_mutex); | |
| 4570 /* | |
| 4571 * externally initiated failover has happened; | |
| 4572 * force state to ONLINE (see comment above) | |
| 4573 */ | |
| 4574 mdi_pi_set_state(pip, | |
| 4575 MDI_PATHINFO_STATE_ONLINE); | |
| 4576 vlun->svl_fo_support = opinfo.opinfo_mode; | |
| 4577 mdi_pi_set_preferred(pip, | |
| 4578 opinfo.opinfo_preferred); | |
| 4579 return (MDI_SUCCESS); | |
| 4580 } | |
| 4581 } | |
| 4582 mutex_exit(&vlun->svl_mutex); | |
| 4583 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_STANDBY); | |
| 4584 | |
| 4585 /* | |
| 4586 * Initiate auto-failback, if enabled, for path if path-state | |
| 4587 * is transitioning from OFFLINE->STANDBY and pathclass is the | |
| 4588 * prefered pathclass for this storage. | |
| 4589 * NOTE: In case where opinfo_path_state is SCSI_PATH_ACTIVE | |
| 4590 * (above), where the pi state is set to STANDBY, we don't | |
| 4591 * initiate auto-failback as the next IO shall take care of. | |
| 4592 * this. See comment above. | |
| 4593 */ | |
| 4594 (*fo->sfo_pathclass_next)(NULL, &best_pclass, | |
| 4595 vlun->svl_fops_ctpriv); | |
| 4596 if (((vhci->vhci_conf_flags & VHCI_CONF_FLAGS_AUTO_FAILBACK) == | |
| 4597 VHCI_CONF_FLAGS_AUTO_FAILBACK) && | |
| 4598 ((strcmp(pclass, best_pclass) == 0) || | |
| 4599 mdi_pi_get_preferred(pip) == 1) && | |
| 4600 ((MDI_PI_OLD_STATE(pip) == MDI_PATHINFO_STATE_OFFLINE)|| | |
| 4601 (MDI_PI_OLD_STATE(pip) == MDI_PATHINFO_STATE_INIT))) { | |
| 4602 VHCI_DEBUG(1, (CE_NOTE, NULL, "%s pathclass path: %p" | |
| 4603 " OFFLINE->STANDBY transition for lun %s\n", | |
| 4604 best_pclass, (void *)pip, vlun->svl_lun_wwn)); | |
| 4605 (void) taskq_dispatch(vhci->vhci_taskq, | |
| 4606 vhci_initiate_auto_failback, (void *) vlun, | |
| 4607 KM_SLEEP); | |
| 4608 } | |
| 4609 } | |
| 4610 vlun->svl_fo_support = opinfo.opinfo_mode; | |
| 4611 mdi_pi_set_preferred(pip, opinfo.opinfo_preferred); | |
| 4612 | |
| 4613 VHCI_DEBUG(8, (CE_NOTE, NULL, "vhci_update_pathinfo: opinfo_rev = %x," | |
| 4614 " opinfo_path_state = %x opinfo_preferred = %x, opinfo_mode = %x\n", | |
| 4615 opinfo.opinfo_rev, opinfo.opinfo_path_state, | |
| 4616 opinfo.opinfo_preferred, opinfo.opinfo_mode)); | |
| 4617 | |
| 4618 return (MDI_SUCCESS); | |
| 4619 } | |
| 4620 | |
| 4621 /* | |
| 4622 * Form the kstat name and and call mdi_pi_kstat_create() | |
| 4623 */ | |
| 4624 void | |
| 4625 vhci_kstat_create_pathinfo(mdi_pathinfo_t *pip) | |
| 4626 { | |
| 4627 dev_info_t *tgt_dip; | |
| 4628 dev_info_t *pdip; | |
| 4629 char *guid; | |
| 4630 char *target_port, *target_port_dup; | |
| 4631 char ks_name[KSTAT_STRLEN]; | |
| 4632 uint_t pid; | |
| 4633 int by_id; | |
| 4634 mod_hash_val_t hv; | |
| 4635 | |
| 4636 | |
| 4637 /* return if we have already allocated kstats */ | |
| 4638 if (mdi_pi_kstat_exists(pip)) | |
| 4639 return; | |
| 4640 | |
| 4641 /* | |
| 4642 * We need instance numbers to create a kstat name, return if we don't | |
| 4643 * have instance numbers assigned yet. | |
| 4644 */ | |
| 4645 tgt_dip = mdi_pi_get_client(pip); | |
| 4646 pdip = mdi_pi_get_phci(pip); | |
| 4647 if ((ddi_get_instance(tgt_dip) == -1) || (ddi_get_instance(pdip) == -1)) | |
| 4648 return; | |
| 4649 | |
| 4650 /* | |
| 4651 * A path oriented kstat has a ks_name of the form: | |
| 4652 * | |
| 4653 * <client-driver><instance>.t<pid>.<pHCI-driver><instance> | |
| 4654 * | |
| 4655 * We maintain a bidirectional 'target-port' to <pid> map, | |
| 4656 * called targetmap. All pathinfo nodes with the same | |
| 4657 * 'target-port' map to the same <pid>. The iostat(1M) code, | |
| 4658 * when parsing a path oriented kstat name, uses the <pid> as | |
| 4659 * a SCSI_VHCI_GET_TARGET_LONGNAME ioctl argument in order | |
| 4660 * to get the 'target-port'. For KSTAT_FLAG_PERSISTENT kstats, | |
| 4661 * this ioctl needs to translate a <pid> to a 'target-port' | |
| 4662 * even after all pathinfo nodes associated with the | |
| 4663 * 'target-port' have been destroyed. This is needed to support | |
| 4664 * consistent first-iteration activity-since-boot iostat(1M) | |
| 4665 * output. Because of this requirement, the mapping can't be | |
| 4666 * based on pathinfo information in a devinfo snapshot. | |
| 4667 */ | |
| 4668 | |
| 4669 /* determine 'target-port' */ | |
| 4670 if (mdi_prop_lookup_string(pip, | |
| 4671 "target-port", &target_port) == MDI_SUCCESS) { | |
| 4672 target_port_dup = i_ddi_strdup(target_port, KM_SLEEP); | |
| 4673 (void) mdi_prop_free(target_port); | |
| 4674 by_id = 1; | |
| 4675 } else { | |
| 4676 /* | |
| 4677 * If the pHCI did not set up 'target-port' on this | |
| 4678 * pathinfo node, assume that our client is the only | |
| 4679 * one with paths to the device by using the guid | |
| 4680 * value as the 'target-port'. Since no other client | |
| 4681 * will have the same guid, no other client will use | |
| 4682 * the same <pid>. NOTE: a client with an instance | |
| 4683 * number always has a guid. | |
| 4684 */ | |
| 4685 (void) ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, | |
| 4686 PROPFLAGS, MDI_CLIENT_GUID_PROP, &guid); | |
| 4687 target_port_dup = i_ddi_strdup(guid, KM_SLEEP); | |
| 4688 ddi_prop_free(guid); | |
| 4689 | |
| 4690 /* | |
| 4691 * For this type of mapping we don't want the | |
| 4692 * <id> -> 'target-port' mapping to be made. This | |
| 4693 * will cause the SCSI_VHCI_GET_TARGET_LONGNAME ioctl | |
| 4694 * to fail, and the iostat(1M) long '-n' output will | |
| 4695 * still use the <pid>. We do this because we just | |
| 4696 * made up the 'target-port' using the guid, and we | |
| 4697 * don't want to expose that fact in iostat output. | |
| 4698 */ | |
| 4699 by_id = 0; | |
| 4700 } | |
| 4701 | |
| 4702 /* find/establish <pid> given 'target-port' */ | |
| 4703 mutex_enter(&vhci_targetmap_mutex); | |
| 4704 if (mod_hash_find(vhci_targetmap_byport, | |
| 4705 (mod_hash_key_t)target_port_dup, &hv) == 0) { | |
| 4706 pid = (int)(intptr_t)hv; /* mapping exists */ | |
| 4707 } else { | |
| 4708 pid = vhci_targetmap_pid++; /* new mapping */ | |
| 4709 | |
| 4710 (void) mod_hash_insert(vhci_targetmap_byport, | |
| 4711 (mod_hash_key_t)target_port_dup, | |
| 4712 (mod_hash_val_t)(intptr_t)pid); | |
| 4713 if (by_id) { | |
| 4714 (void) mod_hash_insert(vhci_targetmap_bypid, | |
| 4715 (mod_hash_key_t)(uintptr_t)pid, | |
| 4716 (mod_hash_val_t)(uintptr_t)target_port_dup); | |
| 4717 } | |
| 4718 target_port_dup = NULL; /* owned by hash */ | |
| 4719 } | |
| 4720 mutex_exit(&vhci_targetmap_mutex); | |
| 4721 | |
| 4722 /* form kstat name */ | |
| 4723 (void) snprintf(ks_name, KSTAT_STRLEN, "%s%d.t%d.%s%d", | |
| 4724 ddi_driver_name(tgt_dip), ddi_get_instance(tgt_dip), | |
| 4725 pid, ddi_driver_name(pdip), ddi_get_instance(pdip)); | |
| 4726 | |
| 4727 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_path_online: path:%p " | |
| 4728 "kstat %s: pid %x <-> port %s\n", (void *)pip, | |
| 4729 ks_name, pid, target_port_dup)); | |
| 4730 if (target_port_dup) | |
| 4731 kmem_free(target_port_dup, strlen(target_port_dup) + 1); | |
| 4732 | |
| 4733 /* call mdi to create kstats with the name we built */ | |
| 4734 (void) mdi_pi_kstat_create(pip, ks_name); | |
| 4735 } | |
| 4736 | |
| 4737 /* ARGSUSED */ | |
| 4738 static int | |
| 4739 vhci_pathinfo_online(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 4740 { | |
| 4741 scsi_hba_tran_t *hba = NULL; | |
| 4742 struct scsi_device *psd = NULL; | |
| 4743 scsi_vhci_lun_t *vlun = NULL; | |
| 4744 dev_info_t *pdip = NULL; | |
| 4745 dev_info_t *tgt_dip; | |
| 4746 struct scsi_vhci *vhci; | |
| 4747 char *guid; | |
| 4748 struct scsi_failover *sf; | |
| 4749 struct scsi_failover_ops *sfo; | |
| 4750 char *override; | |
| 4751 scsi_vhci_priv_t *svp = NULL; | |
| 4752 struct buf *bp; | |
| 4753 struct scsi_address *ap; | |
| 4754 struct scsi_pkt *pkt; | |
| 4755 int rval = MDI_FAILURE; | |
| 4756 uint_t inq_size = VHCI_STD_INQ_SIZE; | |
| 4757 mpapi_item_list_t *list_ptr; | |
| 4758 mpapi_lu_data_t *ld; | |
| 4759 | |
| 4760 ASSERT(vdip != NULL); | |
| 4761 ASSERT(pip != NULL); | |
| 4762 | |
| 4763 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 4764 ASSERT(vhci != NULL); | |
| 4765 | |
| 4766 pdip = mdi_pi_get_phci(pip); | |
| 4767 hba = ddi_get_driver_private(pdip); | |
| 4768 ASSERT(hba != NULL); | |
| 4769 | |
| 4770 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 4771 ASSERT(svp != NULL); | |
| 4772 | |
| 4773 tgt_dip = mdi_pi_get_client(pip); | |
| 4774 ASSERT(tgt_dip != NULL); | |
| 4775 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, | |
| 4776 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 4777 VHCI_DEBUG(1, (CE_WARN, NULL, "vhci_path_online: lun guid " | |
| 4778 "property failed")); | |
| 4779 goto failure; | |
| 4780 } | |
| 4781 | |
| 4782 vlun = vhci_lun_lookup(tgt_dip); | |
| 4783 ASSERT(vlun != NULL); | |
| 4784 | |
| 4785 ddi_prop_free(guid); | |
| 4786 | |
| 4787 vlun->svl_dip = mdi_pi_get_client(pip); | |
| 4788 ASSERT(vlun->svl_dip != NULL); | |
| 4789 | |
| 4790 psd = svp->svp_psd; | |
| 4791 ASSERT(psd != NULL); | |
| 4792 | |
| 4793 /* | |
|
6023
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
4794 * For INQUIRY response buffer size, we use VHCI_STD_INQ_SIZE(132bytes) |
| 4851 | 4795 * instead of SUN_INQSIZE(48bytes) which is used in sd layer. This is |
| 4796 * because we could get the Vendor specific parameters(present 97th | |
| 4797 * byte onwards) which are required to process Vendor specific data | |
| 4798 * based on array type. | |
| 4799 * This INQUIRY buffer is freed in vhci_pathinfo_offline but NEVER | |
| 4800 * in a different layer like sd/phci transport. In other words, vhci | |
| 4801 * maintains its own copy of scsi_device and scsi_inquiry data on a | |
| 4802 * per-path basis. | |
| 4803 */ | |
| 4804 if (psd->sd_inq == NULL) { | |
| 4805 psd->sd_inq = (struct scsi_inquiry *) | |
| 4806 kmem_zalloc(inq_size, KM_SLEEP); | |
| 4807 } | |
| 4808 | |
| 4809 tgt_dip = psd->sd_dev; | |
| 4810 ASSERT(tgt_dip != NULL); | |
| 4811 | |
| 4812 /* | |
| 4813 * do inquiry to pass into probe routine; this | |
| 4814 * will avoid each probe routine doing scsi inquiry | |
| 4815 */ | |
| 4816 bp = getrbuf(KM_SLEEP); | |
| 4817 bp->b_un.b_addr = (caddr_t)psd->sd_inq; | |
| 4818 bp->b_flags = B_READ; | |
| 4819 bp->b_bcount = inq_size; | |
| 4820 bp->b_resid = 0; | |
| 4821 | |
| 4822 ap = &psd->sd_address; | |
| 4823 pkt = scsi_init_pkt(ap, NULL, bp, CDB_GROUP0, | |
| 4824 sizeof (struct scsi_arq_status), 0, 0, SLEEP_FUNC, NULL); | |
| 4825 if (pkt == NULL) { | |
| 4826 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_pathinfo_online: " | |
| 4827 "Inquiry init_pkt failed :%p\n", (void *)pip)); | |
| 4828 rval = MDI_FAILURE; | |
| 4829 goto failure; | |
| 4830 } | |
| 4831 pkt->pkt_cdbp[0] = SCMD_INQUIRY; | |
| 4832 pkt->pkt_cdbp[4] = (uchar_t)inq_size; | |
| 4833 pkt->pkt_time = 60; | |
| 4834 | |
| 4835 rval = vhci_do_scsi_cmd(pkt); | |
| 4836 scsi_destroy_pkt(pkt); | |
| 4837 freerbuf(bp); | |
| 4838 if (rval == 0) { | |
| 4839 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_pathinfo_online: " | |
| 4840 "Failover Inquiry failed path:%p rval:%x\n", | |
| 4841 (void *)pip, rval)); | |
| 4842 rval = MDI_FAILURE; | |
| 4843 goto failure; | |
| 4844 } | |
| 4845 | |
| 4846 /* | |
| 4847 * Determine if device is supported under scsi_vhci, and select | |
| 4848 * failover module. | |
| 4849 * | |
| 4850 * See if there is a scsi_vhci.conf file override for this devices's | |
| 4851 * VID/PID. The following values can be returned: | |
| 4852 * | |
| 4853 * NULL If the NULL is returned then there is no scsi_vhci.conf | |
| 4854 * override. For NULL, we determine the failover_ops for | |
| 4855 * this device by checking the sfo_device_probe entry | |
| 4856 * point for each 'fops' module, in order. | |
| 4857 * | |
| 4858 * NOTE: Correct operation may depend on module ordering | |
| 4859 * of 'specific' (failover modules that are completely | |
| 4860 * VID/PID table based) to 'generic' (failover modules | |
| 4861 * that based on T10 standards like TPGS). Currently, | |
| 4862 * the value of 'ddi-forceload' in scsi_vhci.conf is used | |
| 4863 * to establish the module list and probe order. | |
| 4864 * | |
| 4865 * "NONE" If value "NONE" is returned then there is a | |
| 4866 * scsi_vhci.conf VID/PID override to indicate the device | |
| 4867 * should not be supported under scsi_vhci (even if there | |
| 4868 * is an 'fops' module supporting the device). | |
| 4869 * | |
| 4870 * "<other>" If another value is returned then that value is the | |
| 4871 * name of the 'fops' module that should be used. | |
| 4872 */ | |
| 4873 sfo = NULL; /* "NONE" */ | |
| 4874 override = scsi_get_device_type_string( | |
| 4875 "scsi-vhci-failover-override", vdip, psd); | |
| 4876 | |
| 4877 if (override == NULL) { | |
| 4878 /* NULL: default: select based on sfo_device_probe results */ | |
| 4879 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 4880 if ((sf->sf_sfo == NULL) || | |
| 4881 ((*sf->sf_sfo->sfo_device_probe) (psd, | |
| 4882 psd->sd_inq, &vlun->svl_fops_ctpriv) == | |
| 4883 SFO_DEVICE_PROBE_PHCI)) | |
| 4884 continue; | |
| 4885 | |
| 4886 /* found failover module, supported under scsi_vhci */ | |
| 4887 sfo = sf->sf_sfo; | |
| 4888 vlun->svl_fops_name = | |
| 4889 i_ddi_strdup(sfo->sfo_name, KM_SLEEP); | |
| 4890 break; | |
| 4891 } | |
| 4892 } else if (strcmp(override, "NONE") && strcmp(override, "none")) { | |
| 4893 /* !"NONE": select based on driver.conf specified name */ | |
| 4894 for (sf = scsi_failover_table, sfo = NULL; sf->sf_mod; sf++) { | |
| 4895 if ((sf->sf_sfo == NULL) || | |
| 4896 (sf->sf_sfo->sfo_name == NULL) || | |
| 4897 strcmp(override, sf->sf_sfo->sfo_name)) | |
| 4898 continue; | |
| 4899 | |
| 4900 /* found failover module, supported under scsi_vhci */ | |
| 4901 sfo = sf->sf_sfo; | |
| 4902 vlun->svl_fops_name = kmem_alloc(strlen("conf ") + | |
| 4903 strlen(sfo->sfo_name) + 1, KM_SLEEP); | |
| 4904 (void) sprintf(vlun->svl_fops_name, "conf %s", | |
| 4905 sfo->sfo_name); | |
| 4906 break; | |
| 4907 } | |
| 4908 } | |
| 4909 if (override) | |
| 4910 kmem_free(override, strlen(override) + 1); | |
| 4911 | |
| 4912 if (sfo == NULL) { | |
| 4913 /* no failover module - device not supported */ | |
| 4914 VHCI_DEBUG(1, (CE_NOTE, vhci->vhci_dip, | |
| 4915 "!vhci_pathinfo_online: dev (path 0x%p) not " | |
| 4916 "supported\n", (void *)pip)); | |
| 4917 vlun->svl_not_supported = 1; | |
| 4918 rval = MDI_NOT_SUPPORTED; | |
| 4919 goto done; | |
| 4920 } | |
| 4921 | |
| 4922 /* failover supported for device - save failover_ops in vlun */ | |
| 4923 vlun->svl_fops = sfo; | |
| 4924 | |
| 4925 /* | |
| 4926 * Obtain the device-type based mpxio options as specified in | |
| 4927 * scsi_vhci.conf file. | |
| 4928 * | |
| 4929 * NOTE: currently, the end result is a call to | |
| 4930 * mdi_set_lb_region_size(). | |
| 4931 */ | |
| 4932 vhci_get_device_type_mpxio_options(vdip, tgt_dip, psd); | |
| 4933 | |
| 4934 /* | |
| 4935 * if PGR is active, revalidate key and register on this path also, | |
| 4936 * if key is still valid | |
| 4937 */ | |
| 4938 sema_p(&vlun->svl_pgr_sema); | |
| 4939 if (vlun->svl_pgr_active) { | |
| 4940 rval = vhci_pgr_validate_and_register(svp); | |
| 4941 if (rval != 1) { | |
| 4942 rval = MDI_FAILURE; | |
| 4943 sema_v(&vlun->svl_pgr_sema); | |
| 4944 goto failure; | |
| 4945 } | |
| 4946 } | |
| 4947 sema_v(&vlun->svl_pgr_sema); | |
| 4948 | |
| 4949 if (svp->svp_new_path) { | |
| 4950 /* | |
| 4951 * Last chance to perform any cleanup operations on this | |
| 4952 * new path before making this path completely online. | |
| 4953 */ | |
| 4954 svp->svp_new_path = 0; | |
| 4955 | |
| 4956 /* | |
| 4957 * If scsi_vhci knows the lun is alread RESERVE'd, | |
| 4958 * then skip the issue of RELEASE on new path. | |
| 4959 */ | |
| 4960 if ((vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) == 0) { | |
| 4961 /* | |
| 4962 * Issue SCSI-2 RELEASE only for the first time on | |
| 4963 * a new path just in case the host rebooted and | |
| 4964 * a reservation is still pending on this path. | |
| 4965 * IBM Shark storage does not clear RESERVE upon | |
| 4966 * host reboot. | |
| 4967 */ | |
| 4968 ap = &psd->sd_address; | |
| 4969 pkt = scsi_init_pkt(ap, NULL, NULL, CDB_GROUP0, | |
| 4970 sizeof (struct scsi_arq_status), 0, 0, | |
| 4971 SLEEP_FUNC, NULL); | |
| 4972 if (pkt == NULL) { | |
| 4973 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 4974 "!vhci_pathinfo_online: " | |
| 4975 "Release init_pkt failed :%p\n", | |
| 4976 (void *)pip)); | |
| 4977 rval = MDI_FAILURE; | |
| 4978 goto failure; | |
| 4979 } | |
| 4980 pkt->pkt_cdbp[0] = SCMD_RELEASE; | |
| 4981 pkt->pkt_time = 60; | |
| 4982 | |
| 4983 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 4984 "!vhci_path_online: path:%p " | |
| 4985 "Issued SCSI-2 RELEASE\n", (void *)pip)); | |
| 4986 | |
| 4987 /* Ignore the return value */ | |
| 4988 (void) vhci_do_scsi_cmd(pkt); | |
| 4989 scsi_destroy_pkt(pkt); | |
| 4990 } | |
| 4991 } | |
| 4992 | |
| 4993 rval = vhci_update_pathinfo(psd, pip, sfo, vlun, vhci); | |
| 4994 if (rval == MDI_FAILURE) { | |
| 4995 goto failure; | |
| 4996 } | |
| 4997 | |
| 4998 /* Initialize MP-API data */ | |
| 4999 vhci_update_mpapi_data(vhci, vlun, pip); | |
| 5000 | |
| 5001 /* | |
| 5002 * MP-API also needs the Inquiry data to be maintained in the | |
| 5003 * mp_vendor_prop_t structure, so find the lun and update its | |
| 5004 * structure with this data. | |
| 5005 */ | |
| 5006 list_ptr = (mpapi_item_list_t *)vhci_get_mpapi_item(vhci, NULL, | |
| 5007 MP_OBJECT_TYPE_MULTIPATH_LU, (void *)vlun); | |
| 5008 ld = (mpapi_lu_data_t *)list_ptr->item->idata; | |
| 5009 if (ld != NULL) { | |
| 5010 bcopy(psd->sd_inq->inq_vid, ld->prop.prodInfo.vendor, 8); | |
| 5011 bcopy(psd->sd_inq->inq_pid, ld->prop.prodInfo.product, 16); | |
| 5012 bcopy(psd->sd_inq->inq_revision, ld->prop.prodInfo.revision, 4); | |
| 5013 } else { | |
| 5014 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_pathinfo_online: " | |
| 5015 "mpapi_lu_data_t is NULL")); | |
| 5016 } | |
| 5017 | |
| 5018 /* create kstats for path */ | |
| 5019 vhci_kstat_create_pathinfo(pip); | |
| 5020 | |
| 5021 done: | |
| 5022 mutex_enter(&vhci_global_mutex); | |
| 5023 cv_broadcast(&vhci_cv); | |
| 5024 mutex_exit(&vhci_global_mutex); | |
| 5025 | |
| 5026 if (vlun->svl_setcap_done) { | |
| 5027 (void) vhci_pHCI_cap(ap, "sector-size", | |
| 5028 vlun->svl_sector_size, 1, pip); | |
| 5029 } | |
| 5030 | |
| 5031 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_path_online: path:%p\n", | |
| 5032 (void *)pip)); | |
| 5033 | |
| 5034 failure: | |
| 5035 if ((rval != MDI_SUCCESS) && psd->sd_inq) { | |
| 5036 kmem_free((caddr_t)psd->sd_inq, inq_size); | |
| 5037 psd->sd_inq = (struct scsi_inquiry *)NULL; | |
| 5038 } | |
| 5039 return (rval); | |
| 5040 } | |
| 5041 | |
| 5042 /* | |
| 5043 * path offline handler. Release all bindings that will not be | |
| 5044 * released by the normal packet transport/completion code path. | |
| 5045 * Since we don't (presently) keep any bindings alive outside of | |
| 5046 * the in-transport packets (which will be released on completion) | |
| 5047 * there is not much to do here. | |
| 5048 */ | |
| 5049 /* ARGSUSED */ | |
| 5050 static int | |
| 5051 vhci_pathinfo_offline(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 5052 { | |
| 5053 scsi_hba_tran_t *hba = NULL; | |
| 5054 struct scsi_device *psd = NULL; | |
| 5055 dev_info_t *pdip = NULL; | |
| 5056 dev_info_t *cdip = NULL; | |
| 5057 scsi_vhci_priv_t *svp = NULL; | |
| 5058 uint_t inq_size = VHCI_STD_INQ_SIZE; | |
| 5059 | |
| 5060 ASSERT(vdip != NULL); | |
| 5061 ASSERT(pip != NULL); | |
| 5062 | |
| 5063 pdip = mdi_pi_get_phci(pip); | |
| 5064 ASSERT(pdip != NULL); | |
| 5065 if (pdip == NULL) { | |
| 5066 VHCI_DEBUG(1, (CE_WARN, vdip, "Invalid path 0x%p: NULL " | |
| 5067 "phci dip", (void *)pip)); | |
| 5068 return (MDI_FAILURE); | |
| 5069 } | |
| 5070 | |
| 5071 cdip = mdi_pi_get_client(pip); | |
| 5072 ASSERT(cdip != NULL); | |
| 5073 if (cdip == NULL) { | |
| 5074 VHCI_DEBUG(1, (CE_WARN, vdip, "Invalid path 0x%p: NULL " | |
| 5075 "client dip", (void *)pip)); | |
| 5076 return (MDI_FAILURE); | |
| 5077 } | |
| 5078 | |
| 5079 hba = ddi_get_driver_private(pdip); | |
| 5080 ASSERT(hba != NULL); | |
| 5081 | |
| 5082 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 5083 if (svp == NULL) { | |
| 5084 /* | |
| 5085 * mdi_pathinfo node in INIT state can have vHCI private | |
| 5086 * information set to null | |
| 5087 */ | |
| 5088 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5089 "svp is NULL for pip 0x%p\n", (void *)pip)); | |
| 5090 return (MDI_SUCCESS); | |
| 5091 } | |
| 5092 | |
| 5093 psd = svp->svp_psd; | |
| 5094 ASSERT(psd != NULL); | |
| 5095 | |
| 5096 mutex_enter(&svp->svp_mutex); | |
| 5097 | |
| 5098 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5099 "%d cmds pending on path: 0x%p\n", svp->svp_cmds, (void *)pip)); | |
| 5100 while (svp->svp_cmds != 0) { | |
| 5101 if (cv_timedwait(&svp->svp_cv, &svp->svp_mutex, | |
| 5102 ddi_get_lbolt() + | |
| 5103 drv_usectohz(vhci_path_quiesce_timeout * 1000000)) == -1) { | |
| 5104 /* | |
| 5105 * The timeout time reached without the condition | |
| 5106 * being signaled. | |
| 5107 */ | |
| 5108 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5109 "Timeout reached on path 0x%p without the cond\n", | |
| 5110 (void *)pip)); | |
| 5111 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5112 "%d cmds still pending on path: 0x%p\n", | |
| 5113 svp->svp_cmds, (void *)pip)); | |
| 5114 break; | |
| 5115 } | |
| 5116 } | |
| 5117 mutex_exit(&svp->svp_mutex); | |
| 5118 | |
| 5119 /* | |
| 5120 * Check to see if this vlun has an active SCSI-II RESERVE. And this | |
| 5121 * is the pip for the path that has been reserved. | |
| 5122 * If so clear the reservation by sending a reset, so the host will not | |
| 5123 * get a reservation conflict. Reset the flag VLUN_RESERVE_ACTIVE_FLG | |
| 5124 * for this lun. Also a reset notify is sent to the target driver | |
| 5125 * just in case the POR check condition is cleared by some other layer | |
| 5126 * in the stack. | |
| 5127 */ | |
| 5128 if (svp->svp_svl->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 5129 if (pip == svp->svp_svl->svl_resrv_pip) { | |
| 5130 if (vhci_recovery_reset(svp->svp_svl, | |
| 5131 &svp->svp_psd->sd_address, TRUE, | |
| 5132 VHCI_DEPTH_TARGET) == 0) { | |
| 5133 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5134 "!vhci_pathinfo_offline (pip:%p):" | |
| 5135 "reset failed, retrying\n", (void *)pip)); | |
| 5136 delay(1*drv_usectohz(1000000)); | |
| 5137 if (vhci_recovery_reset(svp->svp_svl, | |
| 5138 &svp->svp_psd->sd_address, TRUE, | |
| 5139 VHCI_DEPTH_TARGET) == 0) { | |
| 5140 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5141 "!vhci_pathinfo_offline " | |
| 5142 "(pip:%p): reset failed, " | |
| 5143 "giving up!\n", (void *)pip)); | |
| 5144 } | |
| 5145 } | |
| 5146 svp->svp_svl->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 5147 } | |
| 5148 } | |
| 5149 | |
| 5150 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_OFFLINE); | |
| 5151 if (psd->sd_inq) { | |
| 5152 kmem_free((caddr_t)psd->sd_inq, inq_size); | |
| 5153 psd->sd_inq = (struct scsi_inquiry *)NULL; | |
| 5154 } | |
| 5155 vhci_mpapi_set_path_state(vdip, pip, MP_DRVR_PATH_STATE_REMOVED); | |
| 5156 | |
| 5157 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5158 "!vhci_pathinfo_offline: offlined path 0x%p\n", (void *)pip)); | |
| 5159 return (MDI_SUCCESS); | |
| 5160 } | |
| 5161 | |
| 5162 | |
| 5163 /* | |
| 5164 * routine for SCSI VHCI IOCTL implementation. | |
| 5165 */ | |
| 5166 /* ARGSUSED */ | |
| 5167 static int | |
| 5168 vhci_ctl(dev_t dev, int cmd, intptr_t data, int mode, cred_t *credp, int *rval) | |
| 5169 { | |
| 5170 struct scsi_vhci *vhci; | |
| 5171 dev_info_t *vdip; | |
| 5172 mdi_pathinfo_t *pip; | |
| 5173 int instance, held; | |
| 5174 int retval = 0; | |
| 5175 caddr_t phci_path = NULL, client_path = NULL; | |
| 5176 caddr_t paddr = NULL; | |
| 5177 sv_iocdata_t ioc; | |
| 5178 sv_iocdata_t *pioc = &ioc; | |
| 5179 sv_switch_to_cntlr_iocdata_t iocsc; | |
| 5180 sv_switch_to_cntlr_iocdata_t *piocsc = &iocsc; | |
| 5181 caddr_t s; | |
| 5182 scsi_vhci_lun_t *vlun; | |
| 5183 struct scsi_failover_ops *fo; | |
| 5184 char *pclass; | |
| 5185 | |
| 5186 /* Check for validity of vhci structure */ | |
| 5187 vhci = ddi_get_soft_state(vhci_softstate, MINOR2INST(getminor(dev))); | |
| 5188 if (vhci == NULL) { | |
| 5189 return (ENXIO); | |
| 5190 } | |
| 5191 | |
| 5192 mutex_enter(&vhci->vhci_mutex); | |
| 5193 if ((vhci->vhci_state & VHCI_STATE_OPEN) == 0) { | |
| 5194 mutex_exit(&vhci->vhci_mutex); | |
| 5195 return (ENXIO); | |
| 5196 } | |
| 5197 mutex_exit(&vhci->vhci_mutex); | |
| 5198 | |
| 5199 /* Get the vhci dip */ | |
| 5200 vdip = vhci->vhci_dip; | |
| 5201 ASSERT(vdip != NULL); | |
| 5202 instance = ddi_get_instance(vdip); | |
| 5203 | |
| 5204 /* Allocate memory for getting parameters from userland */ | |
| 5205 phci_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP); | |
| 5206 client_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP); | |
| 5207 paddr = kmem_zalloc(MAXNAMELEN, KM_SLEEP); | |
| 5208 | |
| 5209 /* | |
| 5210 * Set a local variable indicating the ioctl name. Used for | |
| 5211 * printing debug strings. | |
| 5212 */ | |
| 5213 switch (cmd) { | |
| 5214 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
| 5215 s = "GET_CLIENT_MULTIPATH_INFO"; | |
| 5216 break; | |
| 5217 | |
| 5218 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
| 5219 s = "GET_PHCI_MULTIPATH_INFO"; | |
| 5220 break; | |
| 5221 | |
| 5222 case SCSI_VHCI_GET_CLIENT_NAME: | |
| 5223 s = "GET_CLIENT_NAME"; | |
| 5224 break; | |
| 5225 | |
| 5226 case SCSI_VHCI_PATH_ONLINE: | |
| 5227 s = "PATH_ONLINE"; | |
| 5228 break; | |
| 5229 | |
| 5230 case SCSI_VHCI_PATH_OFFLINE: | |
| 5231 s = "PATH_OFFLINE"; | |
| 5232 break; | |
| 5233 | |
| 5234 case SCSI_VHCI_PATH_STANDBY: | |
| 5235 s = "PATH_STANDBY"; | |
| 5236 break; | |
| 5237 | |
| 5238 case SCSI_VHCI_PATH_TEST: | |
| 5239 s = "PATH_TEST"; | |
| 5240 break; | |
| 5241 | |
| 5242 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
| 5243 s = "SWITCH_TO_CNTLR"; | |
| 5244 break; | |
| 5245 case SCSI_VHCI_PATH_DISABLE: | |
| 5246 s = "PATH_DISABLE"; | |
| 5247 break; | |
| 5248 case SCSI_VHCI_PATH_ENABLE: | |
| 5249 s = "PATH_ENABLE"; | |
| 5250 break; | |
| 5251 | |
| 5252 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
| 5253 s = "GET_TARGET_LONGNAME"; | |
| 5254 break; | |
| 5255 | |
| 5256 #ifdef DEBUG | |
| 5257 case SCSI_VHCI_CONFIGURE_PHCI: | |
| 5258 s = "CONFIGURE_PHCI"; | |
| 5259 break; | |
| 5260 | |
| 5261 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
| 5262 s = "UNCONFIGURE_PHCI"; | |
| 5263 break; | |
| 5264 #endif | |
| 5265 | |
| 5266 default: | |
| 5267 s = "Unknown"; | |
| 5268 vhci_log(CE_NOTE, vdip, | |
| 5269 "!vhci%d: ioctl %x (unsupported ioctl)", instance, cmd); | |
| 5270 retval = ENOTSUP; | |
| 5271 break; | |
| 5272 } | |
| 5273 if (retval != 0) { | |
| 5274 goto end; | |
| 5275 } | |
| 5276 | |
| 5277 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci%d: ioctl <%s>", instance, s)); | |
| 5278 | |
| 5279 /* | |
| 5280 * Get IOCTL parameters from userland | |
| 5281 */ | |
| 5282 switch (cmd) { | |
| 5283 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
| 5284 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
| 5285 case SCSI_VHCI_GET_CLIENT_NAME: | |
| 5286 case SCSI_VHCI_PATH_ONLINE: | |
| 5287 case SCSI_VHCI_PATH_OFFLINE: | |
| 5288 case SCSI_VHCI_PATH_STANDBY: | |
| 5289 case SCSI_VHCI_PATH_TEST: | |
| 5290 case SCSI_VHCI_PATH_DISABLE: | |
| 5291 case SCSI_VHCI_PATH_ENABLE: | |
| 5292 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
| 5293 #ifdef DEBUG | |
| 5294 case SCSI_VHCI_CONFIGURE_PHCI: | |
| 5295 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
| 5296 #endif | |
| 5297 retval = vhci_get_iocdata((const void *)data, pioc, mode, s); | |
| 5298 break; | |
| 5299 | |
| 5300 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
| 5301 retval = vhci_get_iocswitchdata((const void *)data, piocsc, | |
| 5302 mode, s); | |
| 5303 break; | |
| 5304 } | |
| 5305 if (retval != 0) { | |
| 5306 goto end; | |
| 5307 } | |
| 5308 | |
| 5309 | |
| 5310 /* | |
| 5311 * Process the IOCTL | |
| 5312 */ | |
| 5313 switch (cmd) { | |
| 5314 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
| 5315 { | |
| 5316 uint_t num_paths; /* Num paths to client dev */ | |
| 5317 sv_path_info_t *upibuf = NULL; /* To keep userland values */ | |
| 5318 sv_path_info_t *kpibuf = NULL; /* Kernel data for ioctls */ | |
| 5319 dev_info_t *cdip; /* Client device dip */ | |
| 5320 | |
| 5321 if (pioc->ret_elem == NULL) { | |
| 5322 retval = EINVAL; | |
| 5323 break; | |
| 5324 } | |
| 5325 | |
| 5326 /* Get client device path from user land */ | |
| 5327 if (vhci_ioc_get_client_path(pioc, client_path, mode, s)) { | |
| 5328 retval = EFAULT; | |
| 5329 break; | |
| 5330 } | |
| 5331 | |
| 5332 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5333 "client <%s>", s, client_path)); | |
| 5334 | |
| 5335 /* Get number of paths to this client device */ | |
| 5336 if ((cdip = mdi_client_path2devinfo(vdip, client_path)) | |
| 5337 == NULL) { | |
| 5338 retval = ENXIO; | |
| 5339 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5340 "client dip doesn't exist. invalid path <%s>", | |
| 5341 s, client_path)); | |
| 5342 break; | |
| 5343 } | |
| 5344 num_paths = mdi_client_get_path_count(cdip); | |
| 5345 | |
| 5346 if (ddi_copyout(&num_paths, pioc->ret_elem, | |
| 5347 sizeof (num_paths), mode)) { | |
| 5348 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5349 "num_paths copyout failed", s)); | |
| 5350 retval = EFAULT; | |
| 5351 break; | |
| 5352 } | |
| 5353 | |
| 5354 /* If user just wanted num_paths, then return */ | |
| 5355 if (pioc->buf_elem == 0 || pioc->ret_buf == NULL || | |
| 5356 num_paths == 0) { | |
| 5357 break; | |
| 5358 } | |
| 5359 | |
| 5360 /* Set num_paths to value as much as can be sent to userland */ | |
| 5361 if (num_paths > pioc->buf_elem) { | |
| 5362 num_paths = pioc->buf_elem; | |
| 5363 } | |
| 5364 | |
| 5365 /* Allocate memory and get userland pointers */ | |
| 5366 if (vhci_ioc_alloc_pathinfo(&upibuf, &kpibuf, num_paths, | |
| 5367 pioc, mode, s) != 0) { | |
| 5368 retval = EFAULT; | |
| 5369 break; | |
| 5370 } | |
| 5371 ASSERT(upibuf != NULL); | |
| 5372 ASSERT(kpibuf != NULL); | |
| 5373 | |
| 5374 /* | |
| 5375 * Get the path information and send it to userland. | |
| 5376 */ | |
| 5377 if (vhci_get_client_path_list(cdip, kpibuf, num_paths) | |
| 5378 != MDI_SUCCESS) { | |
| 5379 retval = ENXIO; | |
| 5380 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5381 break; | |
| 5382 } | |
| 5383 | |
| 5384 if (vhci_ioc_send_pathinfo(upibuf, kpibuf, num_paths, | |
| 5385 pioc, mode, s)) { | |
| 5386 retval = EFAULT; | |
| 5387 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5388 break; | |
| 5389 } | |
| 5390 | |
| 5391 /* Free the memory allocated for path information */ | |
| 5392 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5393 break; | |
| 5394 } | |
| 5395 | |
| 5396 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
| 5397 { | |
| 5398 uint_t num_paths; /* Num paths to client dev */ | |
| 5399 sv_path_info_t *upibuf = NULL; /* To keep userland values */ | |
| 5400 sv_path_info_t *kpibuf = NULL; /* Kernel data for ioctls */ | |
| 5401 dev_info_t *pdip; /* PHCI device dip */ | |
| 5402 | |
| 5403 if (pioc->ret_elem == NULL) { | |
| 5404 retval = EINVAL; | |
| 5405 break; | |
| 5406 } | |
| 5407 | |
| 5408 /* Get PHCI device path from user land */ | |
| 5409 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5410 retval = EFAULT; | |
| 5411 break; | |
| 5412 } | |
| 5413 | |
| 5414 VHCI_DEBUG(6, (CE_WARN, vdip, | |
| 5415 "!vhci_ioctl: ioctl <%s> phci <%s>", s, phci_path)); | |
| 5416 | |
| 5417 /* Get number of devices associated with this PHCI device */ | |
| 5418 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5419 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5420 "phci dip doesn't exist. invalid path <%s>", | |
| 5421 s, phci_path)); | |
| 5422 retval = ENXIO; | |
| 5423 break; | |
| 5424 } | |
| 5425 | |
| 5426 num_paths = mdi_phci_get_path_count(pdip); | |
| 5427 | |
| 5428 if (ddi_copyout(&num_paths, pioc->ret_elem, | |
| 5429 sizeof (num_paths), mode)) { | |
| 5430 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5431 "num_paths copyout failed", s)); | |
| 5432 retval = EFAULT; | |
| 5433 break; | |
| 5434 } | |
| 5435 | |
| 5436 /* If user just wanted num_paths, then return */ | |
| 5437 if (pioc->buf_elem == 0 || pioc->ret_buf == NULL || | |
| 5438 num_paths == 0) { | |
| 5439 break; | |
| 5440 } | |
| 5441 | |
| 5442 /* Set num_paths to value as much as can be sent to userland */ | |
| 5443 if (num_paths > pioc->buf_elem) { | |
| 5444 num_paths = pioc->buf_elem; | |
| 5445 } | |
| 5446 | |
| 5447 /* Allocate memory and get userland pointers */ | |
| 5448 if (vhci_ioc_alloc_pathinfo(&upibuf, &kpibuf, num_paths, | |
| 5449 pioc, mode, s) != 0) { | |
| 5450 retval = EFAULT; | |
| 5451 break; | |
| 5452 } | |
| 5453 ASSERT(upibuf != NULL); | |
| 5454 ASSERT(kpibuf != NULL); | |
| 5455 | |
| 5456 /* | |
| 5457 * Get the path information and send it to userland. | |
| 5458 */ | |
| 5459 if (vhci_get_phci_path_list(pdip, kpibuf, num_paths) | |
| 5460 != MDI_SUCCESS) { | |
| 5461 retval = ENXIO; | |
| 5462 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5463 break; | |
| 5464 } | |
| 5465 | |
| 5466 if (vhci_ioc_send_pathinfo(upibuf, kpibuf, num_paths, | |
| 5467 pioc, mode, s)) { | |
| 5468 retval = EFAULT; | |
| 5469 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5470 break; | |
| 5471 } | |
| 5472 | |
| 5473 /* Free the memory allocated for path information */ | |
| 5474 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5475 break; | |
| 5476 } | |
| 5477 | |
| 5478 case SCSI_VHCI_GET_CLIENT_NAME: | |
| 5479 { | |
| 5480 dev_info_t *cdip, *pdip; | |
| 5481 | |
| 5482 /* Get PHCI path and device address from user land */ | |
| 5483 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s) || | |
| 5484 vhci_ioc_get_paddr(pioc, paddr, mode, s)) { | |
| 5485 retval = EFAULT; | |
| 5486 break; | |
| 5487 } | |
| 5488 | |
| 5489 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5490 "phci <%s>, paddr <%s>", s, phci_path, paddr)); | |
| 5491 | |
| 5492 /* Get the PHCI dip */ | |
| 5493 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5494 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5495 "phci dip doesn't exist. invalid path <%s>", | |
| 5496 s, phci_path)); | |
| 5497 retval = ENXIO; | |
| 5498 break; | |
| 5499 } | |
| 5500 | |
| 5501 if ((pip = mdi_pi_find(pdip, NULL, paddr)) == NULL) { | |
| 5502 VHCI_DEBUG(1, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5503 "pathinfo doesn't exist. invalid device addr", s)); | |
| 5504 retval = ENXIO; | |
| 5505 break; | |
| 5506 } | |
| 5507 | |
| 5508 /* Get the client device pathname and send to userland */ | |
| 5509 cdip = mdi_pi_get_client(pip); | |
| 5510 vhci_ioc_devi_to_path(cdip, client_path); | |
| 5511 | |
| 5512 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5513 "client <%s>", s, client_path)); | |
| 5514 | |
| 5515 if (vhci_ioc_send_client_path(client_path, pioc, mode, s)) { | |
| 5516 retval = EFAULT; | |
| 5517 break; | |
| 5518 } | |
| 5519 break; | |
| 5520 } | |
| 5521 | |
| 5522 case SCSI_VHCI_PATH_ONLINE: | |
| 5523 case SCSI_VHCI_PATH_OFFLINE: | |
| 5524 case SCSI_VHCI_PATH_STANDBY: | |
| 5525 case SCSI_VHCI_PATH_TEST: | |
| 5526 { | |
| 5527 dev_info_t *pdip; /* PHCI dip */ | |
| 5528 | |
| 5529 /* Get PHCI path and device address from user land */ | |
| 5530 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s) || | |
| 5531 vhci_ioc_get_paddr(pioc, paddr, mode, s)) { | |
| 5532 retval = EFAULT; | |
| 5533 break; | |
| 5534 } | |
| 5535 | |
| 5536 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5537 "phci <%s>, paddr <%s>", s, phci_path, paddr)); | |
| 5538 | |
| 5539 /* Get the PHCI dip */ | |
| 5540 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5541 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5542 "phci dip doesn't exist. invalid path <%s>", | |
| 5543 s, phci_path)); | |
| 5544 retval = ENXIO; | |
| 5545 break; | |
| 5546 } | |
| 5547 | |
| 5548 if ((pip = mdi_pi_find(pdip, NULL, paddr)) == NULL) { | |
| 5549 VHCI_DEBUG(1, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5550 "pathinfo doesn't exist. invalid device addr", s)); | |
| 5551 retval = ENXIO; | |
| 5552 break; | |
| 5553 } | |
| 5554 | |
| 5555 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5556 "Calling MDI function to change device state", s)); | |
| 5557 | |
| 5558 switch (cmd) { | |
| 5559 case SCSI_VHCI_PATH_ONLINE: | |
| 5560 retval = mdi_pi_online(pip, 0); | |
| 5561 break; | |
| 5562 | |
| 5563 case SCSI_VHCI_PATH_OFFLINE: | |
| 5564 retval = mdi_pi_offline(pip, 0); | |
| 5565 break; | |
| 5566 | |
| 5567 case SCSI_VHCI_PATH_STANDBY: | |
| 5568 retval = mdi_pi_standby(pip, 0); | |
| 5569 break; | |
| 5570 | |
| 5571 case SCSI_VHCI_PATH_TEST: | |
| 5572 break; | |
| 5573 } | |
| 5574 break; | |
| 5575 } | |
| 5576 | |
| 5577 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
| 5578 { | |
| 5579 dev_info_t *cdip; | |
| 5580 struct scsi_device *devp; | |
| 5581 | |
| 5582 /* Get the client device pathname */ | |
| 5583 if (ddi_copyin(piocsc->client, client_path, | |
| 5584 MAXPATHLEN, mode)) { | |
| 5585 VHCI_DEBUG(2, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5586 "client_path copyin failed", s)); | |
| 5587 retval = EFAULT; | |
| 5588 break; | |
| 5589 } | |
| 5590 | |
| 5591 /* Get the path class to which user wants to switch */ | |
| 5592 if (ddi_copyin(piocsc->class, paddr, MAXNAMELEN, mode)) { | |
| 5593 VHCI_DEBUG(2, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5594 "controller_class copyin failed", s)); | |
| 5595 retval = EFAULT; | |
| 5596 break; | |
| 5597 } | |
| 5598 | |
| 5599 /* Perform validity checks */ | |
| 5600 if ((cdip = mdi_client_path2devinfo(vdip, | |
| 5601 client_path)) == NULL) { | |
| 5602 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5603 "client dip doesn't exist. invalid path <%s>", | |
| 5604 s, client_path)); | |
| 5605 retval = ENXIO; | |
| 5606 break; | |
| 5607 } | |
| 5608 | |
| 5609 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: Calling MDI func " | |
| 5610 "to switch controller")); | |
| 5611 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: client <%s> " | |
| 5612 "class <%s>", client_path, paddr)); | |
| 5613 | |
| 5614 if (strcmp(paddr, PCLASS_PRIMARY) && | |
| 5615 strcmp(paddr, PCLASS_SECONDARY)) { | |
| 5616 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5617 "invalid path class <%s>", s, paddr)); | |
| 5618 retval = ENXIO; | |
| 5619 break; | |
| 5620 } | |
| 5621 | |
| 5622 devp = ddi_get_driver_private(cdip); | |
| 5623 if (devp == NULL) { | |
| 5624 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5625 "invalid scsi device <%s>", s, client_path)); | |
| 5626 retval = ENXIO; | |
| 5627 break; | |
| 5628 } | |
| 5629 vlun = ADDR2VLUN(&devp->sd_address); | |
| 5630 ASSERT(vlun); | |
| 5631 | |
| 5632 /* | |
| 5633 * Checking to see if device has only one pclass, PRIMARY. | |
| 5634 * If so this device doesn't support failovers. Assumed | |
| 5635 * that the devices with one pclass is PRIMARY, as thats the | |
| 5636 * case today. If this is not true and in future other | |
| 5637 * symmetric devices are supported with other pclass, this | |
| 5638 * IOCTL shall have to be overhauled anyways as now the only | |
| 5639 * arguments it accepts are PRIMARY and SECONDARY. | |
| 5640 */ | |
| 5641 fo = vlun->svl_fops; | |
| 5642 if ((*fo->sfo_pathclass_next)(PCLASS_PRIMARY, &pclass, | |
| 5643 vlun->svl_fops_ctpriv)) { | |
| 5644 retval = ENOTSUP; | |
| 5645 break; | |
| 5646 } | |
| 5647 | |
| 5648 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
| 5649 mutex_enter(&vlun->svl_mutex); | |
| 5650 if (vlun->svl_active_pclass != NULL) { | |
| 5651 if (strcmp(vlun->svl_active_pclass, paddr) == 0) { | |
| 5652 mutex_exit(&vlun->svl_mutex); | |
| 5653 retval = EALREADY; | |
| 5654 VHCI_RELEASE_LUN(vlun); | |
| 5655 break; | |
| 5656 } | |
| 5657 } | |
| 5658 mutex_exit(&vlun->svl_mutex); | |
| 5659 /* Call mdi function to cause a switch over */ | |
| 5660 retval = mdi_failover(vdip, cdip, MDI_FAILOVER_SYNC); | |
| 5661 if (retval == MDI_SUCCESS) { | |
| 5662 retval = 0; | |
| 5663 } else if (retval == MDI_BUSY) { | |
| 5664 retval = EBUSY; | |
| 5665 } else { | |
| 5666 retval = EIO; | |
| 5667 } | |
| 5668 VHCI_RELEASE_LUN(vlun); | |
| 5669 break; | |
| 5670 } | |
| 5671 | |
| 5672 case SCSI_VHCI_PATH_ENABLE: | |
| 5673 case SCSI_VHCI_PATH_DISABLE: | |
| 5674 { | |
| 5675 dev_info_t *cdip, *pdip; | |
| 5676 | |
| 5677 /* | |
| 5678 * Get client device path from user land | |
| 5679 */ | |
| 5680 if (vhci_ioc_get_client_path(pioc, client_path, mode, s)) { | |
| 5681 retval = EFAULT; | |
| 5682 break; | |
| 5683 } | |
| 5684 | |
| 5685 /* | |
| 5686 * Get Phci device path from user land | |
| 5687 */ | |
| 5688 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5689 retval = EFAULT; | |
| 5690 break; | |
| 5691 } | |
| 5692 | |
| 5693 /* | |
| 5694 * Get the devinfo for the Phci. | |
| 5695 */ | |
| 5696 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5697 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5698 "phci dip doesn't exist. invalid path <%s>", | |
| 5699 s, phci_path)); | |
| 5700 retval = ENXIO; | |
| 5701 break; | |
| 5702 } | |
| 5703 | |
| 5704 /* | |
| 5705 * If the client path is set to /scsi_vhci then we need | |
| 5706 * to do the operation on all the clients so set cdip to NULL. | |
| 5707 * Else, try to get the client dip. | |
| 5708 */ | |
| 5709 if (strcmp(client_path, "/scsi_vhci") == 0) { | |
| 5710 cdip = NULL; | |
| 5711 } else { | |
| 5712 if ((cdip = mdi_client_path2devinfo(vdip, | |
| 5713 client_path)) == NULL) { | |
| 5714 retval = ENXIO; | |
| 5715 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 5716 "!vhci_ioctl: ioctl <%s> client dip " | |
| 5717 "doesn't exist. invalid path <%s>", | |
| 5718 s, client_path)); | |
| 5719 break; | |
| 5720 } | |
| 5721 } | |
| 5722 | |
| 5723 if (cmd == SCSI_VHCI_PATH_ENABLE) | |
| 5724 retval = mdi_pi_enable(cdip, pdip, USER_DISABLE); | |
| 5725 else | |
| 5726 retval = mdi_pi_disable(cdip, pdip, USER_DISABLE); | |
| 5727 | |
| 5728 break; | |
| 5729 } | |
| 5730 | |
| 5731 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
| 5732 { | |
| 5733 uint_t pid = pioc->buf_elem; | |
| 5734 char *target_port; | |
| 5735 mod_hash_val_t hv; | |
| 5736 | |
| 5737 /* targetmap lookup of 'target-port' by <pid> */ | |
| 5738 if (mod_hash_find(vhci_targetmap_bypid, | |
| 5739 (mod_hash_key_t)(uintptr_t)pid, &hv) != 0) { | |
| 5740 /* | |
| 5741 * NOTE: failure to find the mapping is OK for guid | |
| 5742 * based 'target-port' values. | |
| 5743 */ | |
| 5744 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5745 "targetport mapping doesn't exist: pid %d", | |
| 5746 s, pid)); | |
| 5747 retval = ENXIO; | |
| 5748 break; | |
| 5749 } | |
| 5750 | |
| 5751 /* copyout 'target-port' result */ | |
| 5752 target_port = (char *)hv; | |
| 5753 if (copyoutstr(target_port, pioc->addr, MAXNAMELEN, NULL)) { | |
| 5754 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5755 "targetport copyout failed: len: %d", | |
| 5756 s, (int)strlen(target_port))); | |
| 5757 retval = EFAULT; | |
| 5758 } | |
| 5759 break; | |
| 5760 } | |
| 5761 | |
| 5762 #ifdef DEBUG | |
| 5763 case SCSI_VHCI_CONFIGURE_PHCI: | |
| 5764 { | |
| 5765 dev_info_t *pdip; | |
| 5766 | |
| 5767 /* Get PHCI path and device address from user land */ | |
| 5768 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5769 retval = EFAULT; | |
| 5770 break; | |
| 5771 } | |
| 5772 | |
| 5773 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5774 "phci <%s>", s, phci_path)); | |
| 5775 | |
| 5776 /* Get the PHCI dip */ | |
| 5777 if ((pdip = e_ddi_hold_devi_by_path(phci_path, 0)) == NULL) { | |
| 5778 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5779 "phci dip doesn't exist. invalid path <%s>", | |
| 5780 s, phci_path)); | |
| 5781 retval = ENXIO; | |
| 5782 break; | |
| 5783 } | |
| 5784 | |
| 5785 if (ndi_devi_config(pdip, | |
| 5786 NDI_DEVFS_CLEAN|NDI_DEVI_PERSIST) != NDI_SUCCESS) { | |
| 5787 retval = EIO; | |
| 5788 } | |
| 5789 | |
| 5790 ddi_release_devi(pdip); | |
| 5791 break; | |
| 5792 } | |
| 5793 | |
| 5794 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
| 5795 { | |
| 5796 dev_info_t *pdip; | |
| 5797 | |
| 5798 /* Get PHCI path and device address from user land */ | |
| 5799 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5800 retval = EFAULT; | |
| 5801 break; | |
| 5802 } | |
| 5803 | |
| 5804 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5805 "phci <%s>", s, phci_path)); | |
| 5806 | |
| 5807 /* Get the PHCI dip */ | |
| 5808 if ((pdip = e_ddi_hold_devi_by_path(phci_path, 0)) == NULL) { | |
| 5809 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5810 "phci dip doesn't exist. invalid path <%s>", | |
| 5811 s, phci_path)); | |
| 5812 retval = ENXIO; | |
| 5813 break; | |
| 5814 } | |
| 5815 | |
| 5816 if (ndi_devi_unconfig(pdip, | |
| 5817 NDI_DEVI_REMOVE|NDI_DEVFS_CLEAN) != NDI_SUCCESS) { | |
| 5818 retval = EBUSY; | |
| 5819 } | |
| 5820 | |
| 5821 ddi_release_devi(pdip); | |
| 5822 break; | |
| 5823 } | |
| 5824 #endif | |
| 5825 } | |
| 5826 | |
| 5827 end: | |
| 5828 /* Free the memory allocated above */ | |
| 5829 if (phci_path != NULL) { | |
| 5830 kmem_free(phci_path, MAXPATHLEN); | |
| 5831 } | |
| 5832 if (client_path != NULL) { | |
| 5833 kmem_free(client_path, MAXPATHLEN); | |
| 5834 } | |
| 5835 if (paddr != NULL) { | |
| 5836 kmem_free(paddr, MAXNAMELEN); | |
| 5837 } | |
| 5838 return (retval); | |
| 5839 } | |
| 5840 | |
| 5841 /* | |
| 5842 * devctl IOCTL support for client device DR | |
| 5843 */ | |
| 5844 /* ARGSUSED */ | |
| 5845 int | |
| 5846 vhci_devctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, | |
| 5847 int *rvalp) | |
| 5848 { | |
| 5849 dev_info_t *self; | |
| 5850 dev_info_t *child; | |
| 5851 scsi_hba_tran_t *hba; | |
| 5852 struct devctl_iocdata *dcp; | |
| 5853 struct scsi_vhci *vhci; | |
| 5854 int rv = 0; | |
| 5855 int retval = 0; | |
| 5856 scsi_vhci_priv_t *svp; | |
| 5857 mdi_pathinfo_t *pip; | |
| 5858 | |
| 5859 if ((vhci = ddi_get_soft_state(vhci_softstate, | |
| 5860 MINOR2INST(getminor(dev)))) == NULL) | |
| 5861 return (ENXIO); | |
| 5862 | |
| 5863 /* | |
| 5864 * check if :devctl minor device has been opened | |
| 5865 */ | |
| 5866 mutex_enter(&vhci->vhci_mutex); | |
| 5867 if ((vhci->vhci_state & VHCI_STATE_OPEN) == 0) { | |
| 5868 mutex_exit(&vhci->vhci_mutex); | |
| 5869 return (ENXIO); | |
| 5870 } | |
| 5871 mutex_exit(&vhci->vhci_mutex); | |
| 5872 | |
| 5873 self = vhci->vhci_dip; | |
| 5874 hba = ddi_get_driver_private(self); | |
| 5875 if (hba == NULL) | |
| 5876 return (ENXIO); | |
| 5877 | |
| 5878 /* | |
| 5879 * We can use the generic implementation for these ioctls | |
| 5880 */ | |
| 5881 switch (cmd) { | |
| 5882 case DEVCTL_DEVICE_GETSTATE: | |
| 5883 case DEVCTL_DEVICE_ONLINE: | |
| 5884 case DEVCTL_DEVICE_OFFLINE: | |
| 5885 case DEVCTL_DEVICE_REMOVE: | |
| 5886 case DEVCTL_BUS_GETSTATE: | |
| 5887 return (ndi_devctl_ioctl(self, cmd, arg, mode, 0)); | |
| 5888 } | |
| 5889 | |
| 5890 /* | |
| 5891 * read devctl ioctl data | |
| 5892 */ | |
| 5893 if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) | |
| 5894 return (EFAULT); | |
| 5895 | |
| 5896 switch (cmd) { | |
| 5897 | |
| 5898 case DEVCTL_DEVICE_RESET: | |
| 5899 /* | |
| 5900 * lookup and hold child device | |
| 5901 */ | |
| 5902 if ((child = ndi_devi_find(self, ndi_dc_getname(dcp), | |
| 5903 ndi_dc_getaddr(dcp))) == NULL) { | |
| 5904 rv = ENXIO; | |
| 5905 break; | |
| 5906 } | |
| 5907 retval = mdi_select_path(child, NULL, | |
| 5908 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 5909 NULL, &pip); | |
| 5910 if ((retval != MDI_SUCCESS) || (pip == NULL)) { | |
| 5911 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl:" | |
| 5912 "Unable to get a path, dip 0x%p", (void *)child)); | |
| 5913 rv = ENXIO; | |
| 5914 break; | |
| 5915 } | |
| 5916 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 5917 if (vhci_recovery_reset(svp->svp_svl, | |
| 5918 &svp->svp_psd->sd_address, TRUE, | |
| 5919 VHCI_DEPTH_TARGET) == 0) { | |
| 5920 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5921 "!vhci_ioctl(pip:%p): " | |
| 5922 "reset failed\n", (void *)pip)); | |
| 5923 rv = ENXIO; | |
| 5924 } | |
| 5925 mdi_rele_path(pip); | |
| 5926 break; | |
| 5927 | |
| 5928 case DEVCTL_BUS_QUIESCE: | |
| 5929 case DEVCTL_BUS_UNQUIESCE: | |
| 5930 case DEVCTL_BUS_RESET: | |
| 5931 case DEVCTL_BUS_RESETALL: | |
| 5932 #ifdef DEBUG | |
| 5933 case DEVCTL_BUS_CONFIGURE: | |
| 5934 case DEVCTL_BUS_UNCONFIGURE: | |
| 5935 #endif | |
| 5936 rv = ENOTSUP; | |
| 5937 break; | |
| 5938 | |
| 5939 default: | |
| 5940 rv = ENOTTY; | |
| 5941 } /* end of outer switch */ | |
| 5942 | |
| 5943 ndi_dc_freehdl(dcp); | |
| 5944 return (rv); | |
| 5945 } | |
| 5946 | |
| 5947 /* | |
| 5948 * Routine to get the PHCI pathname from ioctl structures in userland | |
| 5949 */ | |
| 5950 /* ARGSUSED */ | |
| 5951 static int | |
| 5952 vhci_ioc_get_phci_path(sv_iocdata_t *pioc, caddr_t phci_path, | |
| 5953 int mode, caddr_t s) | |
| 5954 { | |
| 5955 int retval = 0; | |
| 5956 | |
| 5957 if (ddi_copyin(pioc->phci, phci_path, MAXPATHLEN, mode)) { | |
| 5958 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_phci: ioctl <%s> " | |
| 5959 "phci_path copyin failed", s)); | |
| 5960 retval = EFAULT; | |
| 5961 } | |
| 5962 return (retval); | |
| 5963 | |
| 5964 } | |
| 5965 | |
| 5966 | |
| 5967 /* | |
| 5968 * Routine to get the Client device pathname from ioctl structures in userland | |
| 5969 */ | |
| 5970 /* ARGSUSED */ | |
| 5971 static int | |
| 5972 vhci_ioc_get_client_path(sv_iocdata_t *pioc, caddr_t client_path, | |
| 5973 int mode, caddr_t s) | |
| 5974 { | |
| 5975 int retval = 0; | |
| 5976 | |
| 5977 if (ddi_copyin(pioc->client, client_path, MAXPATHLEN, mode)) { | |
| 5978 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_client: " | |
| 5979 "ioctl <%s> client_path copyin failed", s)); | |
| 5980 retval = EFAULT; | |
| 5981 } | |
| 5982 return (retval); | |
| 5983 } | |
| 5984 | |
| 5985 | |
| 5986 /* | |
| 5987 * Routine to get physical device address from ioctl structure in userland | |
| 5988 */ | |
| 5989 /* ARGSUSED */ | |
| 5990 static int | |
| 5991 vhci_ioc_get_paddr(sv_iocdata_t *pioc, caddr_t paddr, int mode, caddr_t s) | |
| 5992 { | |
| 5993 int retval = 0; | |
| 5994 | |
| 5995 if (ddi_copyin(pioc->addr, paddr, MAXNAMELEN, mode)) { | |
| 5996 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_paddr: " | |
| 5997 "ioctl <%s> device addr copyin failed", s)); | |
| 5998 retval = EFAULT; | |
| 5999 } | |
| 6000 return (retval); | |
| 6001 } | |
| 6002 | |
| 6003 | |
| 6004 /* | |
| 6005 * Routine to send client device pathname to userland. | |
| 6006 */ | |
| 6007 /* ARGSUSED */ | |
| 6008 static int | |
| 6009 vhci_ioc_send_client_path(caddr_t client_path, sv_iocdata_t *pioc, | |
| 6010 int mode, caddr_t s) | |
| 6011 { | |
| 6012 int retval = 0; | |
| 6013 | |
| 6014 if (ddi_copyout(client_path, pioc->client, MAXPATHLEN, mode)) { | |
| 6015 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_send_client: " | |
| 6016 "ioctl <%s> client_path copyout failed", s)); | |
| 6017 retval = EFAULT; | |
| 6018 } | |
| 6019 return (retval); | |
| 6020 } | |
| 6021 | |
| 6022 | |
| 6023 /* | |
| 6024 * Routine to translated dev_info pointer (dip) to device pathname. | |
| 6025 */ | |
| 6026 static void | |
| 6027 vhci_ioc_devi_to_path(dev_info_t *dip, caddr_t path) | |
| 6028 { | |
| 6029 (void) ddi_pathname(dip, path); | |
| 6030 } | |
| 6031 | |
| 6032 | |
| 6033 /* | |
| 6034 * vhci_get_phci_path_list: | |
| 6035 * get information about devices associated with a | |
| 6036 * given PHCI device. | |
| 6037 * | |
| 6038 * Return Values: | |
| 6039 * path information elements | |
| 6040 */ | |
| 6041 int | |
| 6042 vhci_get_phci_path_list(dev_info_t *pdip, sv_path_info_t *pibuf, | |
| 6043 uint_t num_elems) | |
| 6044 { | |
| 6045 uint_t count, done; | |
| 6046 mdi_pathinfo_t *pip; | |
| 6047 sv_path_info_t *ret_pip; | |
| 6048 int status; | |
| 6049 size_t prop_size; | |
| 6050 int circular; | |
| 6051 | |
| 6052 /* | |
| 6053 * Get the PHCI structure and retrieve the path information | |
| 6054 * from the GUID hash table. | |
| 6055 */ | |
| 6056 | |
| 6057 ret_pip = pibuf; | |
| 6058 count = 0; | |
| 6059 | |
| 6060 ndi_devi_enter(pdip, &circular); | |
| 6061 | |
| 6062 done = (count >= num_elems); | |
| 6063 pip = mdi_get_next_client_path(pdip, NULL); | |
| 6064 while (pip && !done) { | |
| 6065 mdi_pi_lock(pip); | |
| 6066 (void) ddi_pathname(mdi_pi_get_phci(pip), | |
| 6067 ret_pip->device.ret_phci); | |
| 6068 (void) strcpy(ret_pip->ret_addr, mdi_pi_get_addr(pip)); | |
| 6069 (void) mdi_pi_get_state2(pip, &ret_pip->ret_state, | |
| 6070 &ret_pip->ret_ext_state); | |
| 6071 | |
| 6072 status = mdi_prop_size(pip, &prop_size); | |
| 6073 if (status == MDI_SUCCESS && ret_pip->ret_prop.ret_buf_size) { | |
| 6074 *ret_pip->ret_prop.ret_buf_size = (uint_t)prop_size; | |
| 6075 } | |
| 6076 | |
| 6077 #ifdef DEBUG | |
| 6078 if (status != MDI_SUCCESS) { | |
| 6079 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6080 "!vhci_get_phci_path_list: " | |
| 6081 "phci <%s>, prop size failure 0x%x", | |
| 6082 ret_pip->device.ret_phci, status)); | |
| 6083 } | |
| 6084 #endif /* DEBUG */ | |
| 6085 | |
| 6086 | |
| 6087 if (status == MDI_SUCCESS && ret_pip->ret_prop.buf && | |
| 6088 prop_size && ret_pip->ret_prop.buf_size >= prop_size) { | |
| 6089 status = mdi_prop_pack(pip, | |
| 6090 &ret_pip->ret_prop.buf, | |
| 6091 ret_pip->ret_prop.buf_size); | |
| 6092 | |
| 6093 #ifdef DEBUG | |
| 6094 if (status != MDI_SUCCESS) { | |
| 6095 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6096 "!vhci_get_phci_path_list: " | |
| 6097 "phci <%s>, prop pack failure 0x%x", | |
| 6098 ret_pip->device.ret_phci, status)); | |
| 6099 } | |
| 6100 #endif /* DEBUG */ | |
| 6101 } | |
| 6102 | |
| 6103 mdi_pi_unlock(pip); | |
| 6104 pip = mdi_get_next_client_path(pdip, pip); | |
| 6105 ret_pip++; | |
| 6106 count++; | |
| 6107 done = (count >= num_elems); | |
| 6108 } | |
| 6109 | |
| 6110 ndi_devi_exit(pdip, circular); | |
| 6111 | |
| 6112 return (MDI_SUCCESS); | |
| 6113 } | |
| 6114 | |
| 6115 | |
| 6116 /* | |
| 6117 * vhci_get_client_path_list: | |
| 6118 * get information about various paths associated with a | |
| 6119 * given client device. | |
| 6120 * | |
| 6121 * Return Values: | |
| 6122 * path information elements | |
| 6123 */ | |
| 6124 int | |
| 6125 vhci_get_client_path_list(dev_info_t *cdip, sv_path_info_t *pibuf, | |
| 6126 uint_t num_elems) | |
| 6127 { | |
| 6128 uint_t count, done; | |
| 6129 mdi_pathinfo_t *pip; | |
| 6130 sv_path_info_t *ret_pip; | |
| 6131 int status; | |
| 6132 size_t prop_size; | |
| 6133 int circular; | |
| 6134 | |
| 6135 ret_pip = pibuf; | |
| 6136 count = 0; | |
| 6137 | |
| 6138 ndi_devi_enter(cdip, &circular); | |
| 6139 | |
| 6140 done = (count >= num_elems); | |
| 6141 pip = mdi_get_next_phci_path(cdip, NULL); | |
| 6142 while (pip && !done) { | |
| 6143 mdi_pi_lock(pip); | |
| 6144 (void) ddi_pathname(mdi_pi_get_phci(pip), | |
| 6145 ret_pip->device.ret_phci); | |
| 6146 (void) strcpy(ret_pip->ret_addr, mdi_pi_get_addr(pip)); | |
| 6147 (void) mdi_pi_get_state2(pip, &ret_pip->ret_state, | |
| 6148 &ret_pip->ret_ext_state); | |
| 6149 | |
| 6150 status = mdi_prop_size(pip, &prop_size); | |
| 6151 if (status == MDI_SUCCESS && ret_pip->ret_prop.ret_buf_size) { | |
| 6152 *ret_pip->ret_prop.ret_buf_size = (uint_t)prop_size; | |
| 6153 } | |
| 6154 | |
| 6155 #ifdef DEBUG | |
| 6156 if (status != MDI_SUCCESS) { | |
| 6157 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6158 "!vhci_get_client_path_list: " | |
| 6159 "phci <%s>, prop size failure 0x%x", | |
| 6160 ret_pip->device.ret_phci, status)); | |
| 6161 } | |
| 6162 #endif /* DEBUG */ | |
| 6163 | |
| 6164 | |
| 6165 if (status == MDI_SUCCESS && ret_pip->ret_prop.buf && | |
| 6166 prop_size && ret_pip->ret_prop.buf_size >= prop_size) { | |
| 6167 status = mdi_prop_pack(pip, | |
| 6168 &ret_pip->ret_prop.buf, | |
| 6169 ret_pip->ret_prop.buf_size); | |
| 6170 | |
| 6171 #ifdef DEBUG | |
| 6172 if (status != MDI_SUCCESS) { | |
| 6173 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6174 "!vhci_get_client_path_list: " | |
| 6175 "phci <%s>, prop pack failure 0x%x", | |
| 6176 ret_pip->device.ret_phci, status)); | |
| 6177 } | |
| 6178 #endif /* DEBUG */ | |
| 6179 } | |
| 6180 | |
| 6181 mdi_pi_unlock(pip); | |
| 6182 pip = mdi_get_next_phci_path(cdip, pip); | |
| 6183 ret_pip++; | |
| 6184 count++; | |
| 6185 done = (count >= num_elems); | |
| 6186 } | |
| 6187 | |
| 6188 ndi_devi_exit(cdip, circular); | |
| 6189 | |
| 6190 return (MDI_SUCCESS); | |
| 6191 } | |
| 6192 | |
| 6193 | |
| 6194 /* | |
| 6195 * Routine to get ioctl argument structure from userland. | |
| 6196 */ | |
| 6197 /* ARGSUSED */ | |
| 6198 static int | |
| 6199 vhci_get_iocdata(const void *data, sv_iocdata_t *pioc, int mode, caddr_t s) | |
| 6200 { | |
| 6201 int retval = 0; | |
| 6202 | |
| 6203 #ifdef _MULTI_DATAMODEL | |
| 6204 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6205 case DDI_MODEL_ILP32: | |
| 6206 { | |
| 6207 sv_iocdata32_t ioc32; | |
| 6208 | |
| 6209 if (ddi_copyin(data, &ioc32, sizeof (ioc32), mode)) { | |
| 6210 retval = EFAULT; | |
| 6211 break; | |
| 6212 } | |
| 6213 pioc->client = (caddr_t)(uintptr_t)ioc32.client; | |
| 6214 pioc->phci = (caddr_t)(uintptr_t)ioc32.phci; | |
| 6215 pioc->addr = (caddr_t)(uintptr_t)ioc32.addr; | |
| 6216 pioc->buf_elem = (uint_t)ioc32.buf_elem; | |
| 6217 pioc->ret_buf = (sv_path_info_t *)(uintptr_t)ioc32.ret_buf; | |
| 6218 pioc->ret_elem = (uint_t *)(uintptr_t)ioc32.ret_elem; | |
| 6219 break; | |
| 6220 } | |
| 6221 | |
| 6222 case DDI_MODEL_NONE: | |
| 6223 if (ddi_copyin(data, pioc, sizeof (*pioc), mode)) { | |
| 6224 retval = EFAULT; | |
| 6225 break; | |
| 6226 } | |
| 6227 break; | |
| 6228 } | |
| 6229 #else /* _MULTI_DATAMODEL */ | |
| 6230 if (ddi_copyin(data, pioc, sizeof (*pioc), mode)) { | |
| 6231 retval = EFAULT; | |
| 6232 } | |
| 6233 #endif /* _MULTI_DATAMODEL */ | |
| 6234 | |
| 6235 #ifdef DEBUG | |
| 6236 if (retval) { | |
| 6237 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: cmd <%s> " | |
| 6238 "iocdata copyin failed", s)); | |
| 6239 } | |
| 6240 #endif | |
| 6241 | |
| 6242 return (retval); | |
| 6243 } | |
| 6244 | |
| 6245 | |
| 6246 /* | |
| 6247 * Routine to get the ioctl argument for ioctl causing controller switchover. | |
| 6248 */ | |
| 6249 /* ARGSUSED */ | |
| 6250 static int | |
| 6251 vhci_get_iocswitchdata(const void *data, sv_switch_to_cntlr_iocdata_t *piocsc, | |
| 6252 int mode, caddr_t s) | |
| 6253 { | |
| 6254 int retval = 0; | |
| 6255 | |
| 6256 #ifdef _MULTI_DATAMODEL | |
| 6257 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6258 case DDI_MODEL_ILP32: | |
| 6259 { | |
| 6260 sv_switch_to_cntlr_iocdata32_t ioc32; | |
| 6261 | |
| 6262 if (ddi_copyin(data, &ioc32, sizeof (ioc32), mode)) { | |
| 6263 retval = EFAULT; | |
| 6264 break; | |
| 6265 } | |
| 6266 piocsc->client = (caddr_t)(uintptr_t)ioc32.client; | |
| 6267 piocsc->class = (caddr_t)(uintptr_t)ioc32.class; | |
| 6268 break; | |
| 6269 } | |
| 6270 | |
| 6271 case DDI_MODEL_NONE: | |
| 6272 if (ddi_copyin(data, piocsc, sizeof (*piocsc), mode)) { | |
| 6273 retval = EFAULT; | |
| 6274 } | |
| 6275 break; | |
| 6276 } | |
| 6277 #else /* _MULTI_DATAMODEL */ | |
| 6278 if (ddi_copyin(data, piocsc, sizeof (*piocsc), mode)) { | |
| 6279 retval = EFAULT; | |
| 6280 } | |
| 6281 #endif /* _MULTI_DATAMODEL */ | |
| 6282 | |
| 6283 #ifdef DEBUG | |
| 6284 if (retval) { | |
| 6285 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: cmd <%s> " | |
| 6286 "switch_to_cntlr_iocdata copyin failed", s)); | |
| 6287 } | |
| 6288 #endif | |
| 6289 | |
| 6290 return (retval); | |
| 6291 } | |
| 6292 | |
| 6293 | |
| 6294 /* | |
| 6295 * Routine to allocate memory for the path information structures. | |
| 6296 * It allocates two chunks of memory - one for keeping userland | |
| 6297 * pointers/values for path information and path properties, second for | |
| 6298 * keeping allocating kernel memory for path properties. These path | |
| 6299 * properties are finally copied to userland. | |
| 6300 */ | |
| 6301 /* ARGSUSED */ | |
| 6302 static int | |
| 6303 vhci_ioc_alloc_pathinfo(sv_path_info_t **upibuf, sv_path_info_t **kpibuf, | |
| 6304 uint_t num_paths, sv_iocdata_t *pioc, int mode, caddr_t s) | |
| 6305 { | |
| 6306 sv_path_info_t *pi; | |
| 6307 uint_t bufsize; | |
| 6308 int retval = 0; | |
| 6309 int index; | |
| 6310 | |
| 6311 /* Allocate memory */ | |
| 6312 *upibuf = (sv_path_info_t *) | |
| 6313 kmem_zalloc(sizeof (sv_path_info_t) * num_paths, KM_SLEEP); | |
| 6314 ASSERT(*upibuf != NULL); | |
| 6315 *kpibuf = (sv_path_info_t *) | |
| 6316 kmem_zalloc(sizeof (sv_path_info_t) * num_paths, KM_SLEEP); | |
| 6317 ASSERT(*kpibuf != NULL); | |
| 6318 | |
| 6319 /* | |
| 6320 * Get the path info structure from the user space. | |
| 6321 * We are interested in the following fields: | |
| 6322 * - user size of buffer for per path properties. | |
| 6323 * - user address of buffer for path info properties. | |
| 6324 * - user pointer for returning actual buffer size | |
| 6325 * Keep these fields in the 'upibuf' structures. | |
| 6326 * Allocate buffer for per path info properties in kernel | |
| 6327 * structure ('kpibuf'). | |
| 6328 * Size of these buffers will be equal to the size of buffers | |
| 6329 * in the user space. | |
| 6330 */ | |
| 6331 #ifdef _MULTI_DATAMODEL | |
| 6332 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6333 case DDI_MODEL_ILP32: | |
| 6334 { | |
| 6335 sv_path_info32_t *src; | |
| 6336 sv_path_info32_t pi32; | |
| 6337 | |
| 6338 src = (sv_path_info32_t *)pioc->ret_buf; | |
| 6339 pi = (sv_path_info_t *)*upibuf; | |
| 6340 for (index = 0; index < num_paths; index++, src++, pi++) { | |
| 6341 if (ddi_copyin(src, &pi32, sizeof (pi32), mode)) { | |
| 6342 retval = EFAULT; | |
| 6343 break; | |
| 6344 } | |
| 6345 | |
| 6346 pi->ret_prop.buf_size = | |
| 6347 (uint_t)pi32.ret_prop.buf_size; | |
| 6348 pi->ret_prop.ret_buf_size = | |
| 6349 (uint_t *)(uintptr_t)pi32.ret_prop.ret_buf_size; | |
| 6350 pi->ret_prop.buf = | |
| 6351 (caddr_t)(uintptr_t)pi32.ret_prop.buf; | |
| 6352 } | |
| 6353 break; | |
| 6354 } | |
| 6355 | |
| 6356 case DDI_MODEL_NONE: | |
| 6357 if (ddi_copyin(pioc->ret_buf, *upibuf, | |
| 6358 sizeof (sv_path_info_t) * num_paths, mode)) { | |
| 6359 retval = EFAULT; | |
| 6360 } | |
| 6361 break; | |
| 6362 } | |
| 6363 #else /* _MULTI_DATAMODEL */ | |
| 6364 if (ddi_copyin(pioc->ret_buf, *upibuf, | |
| 6365 sizeof (sv_path_info_t) * num_paths, mode)) { | |
| 6366 retval = EFAULT; | |
| 6367 } | |
| 6368 #endif /* _MULTI_DATAMODEL */ | |
| 6369 | |
| 6370 if (retval != 0) { | |
| 6371 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_alloc_path_info: " | |
| 6372 "ioctl <%s> normal: path_info copyin failed", s)); | |
| 6373 kmem_free(*upibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6374 kmem_free(*kpibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6375 *upibuf = NULL; | |
| 6376 *kpibuf = NULL; | |
| 6377 return (retval); | |
| 6378 } | |
| 6379 | |
| 6380 /* | |
| 6381 * Allocate memory for per path properties. | |
| 6382 */ | |
| 6383 for (index = 0, pi = *kpibuf; index < num_paths; index++, pi++) { | |
| 6384 bufsize = (*upibuf)[index].ret_prop.buf_size; | |
| 6385 | |
| 6386 if (bufsize && bufsize <= SV_PROP_MAX_BUF_SIZE) { | |
| 6387 pi->ret_prop.buf_size = bufsize; | |
| 6388 pi->ret_prop.buf = (caddr_t) | |
| 6389 kmem_zalloc(bufsize, KM_SLEEP); | |
| 6390 ASSERT(pi->ret_prop.buf != NULL); | |
| 6391 } else { | |
| 6392 pi->ret_prop.buf_size = 0; | |
| 6393 pi->ret_prop.buf = NULL; | |
| 6394 } | |
| 6395 | |
| 6396 if ((*upibuf)[index].ret_prop.ret_buf_size != NULL) { | |
| 6397 pi->ret_prop.ret_buf_size = (uint_t *)kmem_zalloc( | |
| 6398 sizeof (*pi->ret_prop.ret_buf_size), KM_SLEEP); | |
| 6399 ASSERT(pi->ret_prop.ret_buf_size != NULL); | |
| 6400 } else { | |
| 6401 pi->ret_prop.ret_buf_size = NULL; | |
| 6402 } | |
| 6403 } | |
| 6404 | |
| 6405 return (0); | |
| 6406 } | |
| 6407 | |
| 6408 | |
| 6409 /* | |
| 6410 * Routine to free memory for the path information structures. | |
| 6411 * This is the memory which was allocated earlier. | |
| 6412 */ | |
| 6413 /* ARGSUSED */ | |
| 6414 static void | |
| 6415 vhci_ioc_free_pathinfo(sv_path_info_t *upibuf, sv_path_info_t *kpibuf, | |
| 6416 uint_t num_paths) | |
| 6417 { | |
| 6418 sv_path_info_t *pi; | |
| 6419 int index; | |
| 6420 | |
| 6421 /* Free memory for per path properties */ | |
| 6422 for (index = 0, pi = kpibuf; index < num_paths; index++, pi++) { | |
| 6423 if (pi->ret_prop.ret_buf_size != NULL) { | |
| 6424 kmem_free(pi->ret_prop.ret_buf_size, | |
| 6425 sizeof (*pi->ret_prop.ret_buf_size)); | |
| 6426 } | |
| 6427 | |
| 6428 if (pi->ret_prop.buf != NULL) { | |
| 6429 kmem_free(pi->ret_prop.buf, pi->ret_prop.buf_size); | |
| 6430 } | |
| 6431 } | |
| 6432 | |
| 6433 /* Free memory for path info structures */ | |
| 6434 kmem_free(upibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6435 kmem_free(kpibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6436 } | |
| 6437 | |
| 6438 | |
| 6439 /* | |
| 6440 * Routine to copy path information and path properties to userland. | |
| 6441 */ | |
| 6442 /* ARGSUSED */ | |
| 6443 static int | |
| 6444 vhci_ioc_send_pathinfo(sv_path_info_t *upibuf, sv_path_info_t *kpibuf, | |
| 6445 uint_t num_paths, sv_iocdata_t *pioc, int mode, caddr_t s) | |
| 6446 { | |
| 6447 int retval = 0, index; | |
| 6448 sv_path_info_t *upi_ptr; | |
| 6449 sv_path_info32_t *upi32_ptr; | |
| 6450 | |
| 6451 #ifdef _MULTI_DATAMODEL | |
| 6452 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6453 case DDI_MODEL_ILP32: | |
| 6454 goto copy_32bit; | |
| 6455 | |
| 6456 case DDI_MODEL_NONE: | |
| 6457 goto copy_normal; | |
| 6458 } | |
| 6459 #else /* _MULTI_DATAMODEL */ | |
| 6460 | |
| 6461 goto copy_normal; | |
| 6462 | |
| 6463 #endif /* _MULTI_DATAMODEL */ | |
| 6464 | |
| 6465 copy_normal: | |
| 6466 | |
| 6467 /* | |
| 6468 * Copy path information and path properties to user land. | |
| 6469 * Pointer fields inside the path property structure were | |
| 6470 * saved in the 'upibuf' structure earlier. | |
| 6471 */ | |
| 6472 upi_ptr = pioc->ret_buf; | |
| 6473 for (index = 0; index < num_paths; index++) { | |
| 6474 if (ddi_copyout(kpibuf[index].device.ret_ct, | |
| 6475 upi_ptr[index].device.ret_ct, MAXPATHLEN, mode)) { | |
| 6476 retval = EFAULT; | |
| 6477 break; | |
| 6478 } | |
| 6479 | |
| 6480 if (ddi_copyout(kpibuf[index].ret_addr, | |
| 6481 upi_ptr[index].ret_addr, MAXNAMELEN, mode)) { | |
| 6482 retval = EFAULT; | |
| 6483 break; | |
| 6484 } | |
| 6485 | |
| 6486 if (ddi_copyout(&kpibuf[index].ret_state, | |
| 6487 &upi_ptr[index].ret_state, sizeof (kpibuf[index].ret_state), | |
| 6488 mode)) { | |
| 6489 retval = EFAULT; | |
| 6490 break; | |
| 6491 } | |
| 6492 | |
| 6493 if (ddi_copyout(&kpibuf[index].ret_ext_state, | |
| 6494 &upi_ptr[index].ret_ext_state, | |
| 6495 sizeof (kpibuf[index].ret_ext_state), mode)) { | |
| 6496 retval = EFAULT; | |
| 6497 break; | |
| 6498 } | |
| 6499 | |
| 6500 if ((kpibuf[index].ret_prop.ret_buf_size != NULL) && | |
| 6501 ddi_copyout(kpibuf[index].ret_prop.ret_buf_size, | |
| 6502 upibuf[index].ret_prop.ret_buf_size, | |
| 6503 sizeof (*upibuf[index].ret_prop.ret_buf_size), mode)) { | |
| 6504 retval = EFAULT; | |
| 6505 break; | |
| 6506 } | |
| 6507 | |
| 6508 if ((kpibuf[index].ret_prop.buf != NULL) && | |
| 6509 ddi_copyout(kpibuf[index].ret_prop.buf, | |
| 6510 upibuf[index].ret_prop.buf, | |
| 6511 upibuf[index].ret_prop.buf_size, mode)) { | |
| 6512 retval = EFAULT; | |
| 6513 break; | |
| 6514 } | |
| 6515 } | |
| 6516 | |
| 6517 #ifdef DEBUG | |
| 6518 if (retval) { | |
| 6519 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: ioctl <%s> " | |
| 6520 "normal: path_info copyout failed", s)); | |
| 6521 } | |
| 6522 #endif | |
| 6523 | |
| 6524 return (retval); | |
| 6525 | |
| 6526 copy_32bit: | |
| 6527 /* | |
| 6528 * Copy path information and path properties to user land. | |
| 6529 * Pointer fields inside the path property structure were | |
| 6530 * saved in the 'upibuf' structure earlier. | |
| 6531 */ | |
| 6532 upi32_ptr = (sv_path_info32_t *)pioc->ret_buf; | |
| 6533 for (index = 0; index < num_paths; index++) { | |
| 6534 if (ddi_copyout(kpibuf[index].device.ret_ct, | |
| 6535 upi32_ptr[index].device.ret_ct, MAXPATHLEN, mode)) { | |
| 6536 retval = EFAULT; | |
| 6537 break; | |
| 6538 } | |
| 6539 | |
| 6540 if (ddi_copyout(kpibuf[index].ret_addr, | |
| 6541 upi32_ptr[index].ret_addr, MAXNAMELEN, mode)) { | |
| 6542 retval = EFAULT; | |
| 6543 break; | |
| 6544 } | |
| 6545 | |
| 6546 if (ddi_copyout(&kpibuf[index].ret_state, | |
| 6547 &upi32_ptr[index].ret_state, | |
| 6548 sizeof (kpibuf[index].ret_state), mode)) { | |
| 6549 retval = EFAULT; | |
| 6550 break; | |
| 6551 } | |
| 6552 | |
| 6553 if (ddi_copyout(&kpibuf[index].ret_ext_state, | |
| 6554 &upi32_ptr[index].ret_ext_state, | |
| 6555 sizeof (kpibuf[index].ret_ext_state), mode)) { | |
| 6556 retval = EFAULT; | |
| 6557 break; | |
| 6558 } | |
| 6559 if ((kpibuf[index].ret_prop.ret_buf_size != NULL) && | |
| 6560 ddi_copyout(kpibuf[index].ret_prop.ret_buf_size, | |
| 6561 upibuf[index].ret_prop.ret_buf_size, | |
| 6562 sizeof (*upibuf[index].ret_prop.ret_buf_size), mode)) { | |
| 6563 retval = EFAULT; | |
| 6564 break; | |
| 6565 } | |
| 6566 | |
| 6567 if ((kpibuf[index].ret_prop.buf != NULL) && | |
| 6568 ddi_copyout(kpibuf[index].ret_prop.buf, | |
| 6569 upibuf[index].ret_prop.buf, | |
| 6570 upibuf[index].ret_prop.buf_size, mode)) { | |
| 6571 retval = EFAULT; | |
| 6572 break; | |
| 6573 } | |
| 6574 } | |
| 6575 | |
| 6576 #ifdef DEBUG | |
| 6577 if (retval) { | |
| 6578 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: ioctl <%s> " | |
| 6579 "normal: path_info copyout failed", s)); | |
| 6580 } | |
| 6581 #endif | |
| 6582 | |
| 6583 return (retval); | |
| 6584 } | |
| 6585 | |
| 6586 | |
| 6587 /* | |
| 6588 * vhci_failover() | |
| 6589 * This routine expects VHCI_HOLD_LUN before being invoked. It can be invoked | |
| 6590 * as MDI_FAILOVER_ASYNC or MDI_FAILOVER_SYNC. For Asynchronous failovers | |
| 6591 * this routine shall VHCI_RELEASE_LUN on exiting. For synchronous failovers | |
| 6592 * it is the callers responsibility to release lun. | |
| 6593 */ | |
| 6594 | |
| 6595 /* ARGSUSED */ | |
| 6596 static int | |
| 6597 vhci_failover(dev_info_t *vdip, dev_info_t *cdip, int flags) | |
| 6598 { | |
| 6599 char *guid; | |
| 6600 scsi_vhci_lun_t *vlun = NULL; | |
| 6601 struct scsi_vhci *vhci; | |
| 6602 mdi_pathinfo_t *pip, *npip; | |
| 6603 char *s_pclass, *pclass1, *pclass2, *pclass; | |
| 6604 char active_pclass_copy[255], *active_pclass_ptr; | |
| 6605 char *ptr1, *ptr2; | |
| 6606 mdi_pathinfo_state_t pi_state; | |
| 6607 uint32_t pi_ext_state; | |
| 6608 scsi_vhci_priv_t *svp; | |
| 6609 struct scsi_device *sd; | |
| 6610 struct scsi_failover_ops *sfo; | |
| 6611 int sps; /* mdi_select_path() status */ | |
| 6612 int activation_done = 0; | |
| 6613 int rval, retval = MDI_FAILURE; | |
| 6614 int reserve_pending, check_condition, UA_condition; | |
| 6615 struct scsi_pkt *pkt; | |
| 6616 struct buf *bp; | |
| 6617 | |
| 6618 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 6619 sd = ddi_get_driver_private(cdip); | |
| 6620 vlun = ADDR2VLUN(&sd->sd_address); | |
| 6621 ASSERT(vlun != 0); | |
| 6622 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 6623 guid = vlun->svl_lun_wwn; | |
| 6624 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(1): guid %s\n", guid)); | |
| 6625 vhci_log(CE_NOTE, vdip, "!Initiating failover for device %s " | |
| 6626 "(GUID %s)", ddi_node_name(cdip), guid); | |
| 6627 | |
| 6628 /* | |
| 6629 * Lets maintain a local copy of the vlun->svl_active_pclass | |
| 6630 * for the rest of the processing. Accessing the field | |
| 6631 * directly in the loop below causes loop logic to break | |
| 6632 * especially when the field gets updated by other threads | |
| 6633 * update path status etc and causes 'paths are not currently | |
| 6634 * available' condition to be declared prematurely. | |
| 6635 */ | |
| 6636 mutex_enter(&vlun->svl_mutex); | |
| 6637 if (vlun->svl_active_pclass != NULL) { | |
| 6638 (void) strlcpy(active_pclass_copy, vlun->svl_active_pclass, | |
| 6639 sizeof (active_pclass_copy)); | |
| 6640 active_pclass_ptr = &active_pclass_copy[0]; | |
| 6641 mutex_exit(&vlun->svl_mutex); | |
| 6642 if (vhci_quiesce_paths(vdip, cdip, vlun, guid, | |
| 6643 active_pclass_ptr) != 0) { | |
| 6644 retval = MDI_FAILURE; | |
| 6645 } | |
| 6646 } else { | |
| 6647 /* | |
| 6648 * can happen only when the available path to device | |
| 6649 * discovered is a STANDBY path. | |
| 6650 */ | |
| 6651 mutex_exit(&vlun->svl_mutex); | |
| 6652 active_pclass_copy[0] = '\0'; | |
| 6653 active_pclass_ptr = NULL; | |
| 6654 } | |
| 6655 | |
| 6656 sfo = vlun->svl_fops; | |
| 6657 ASSERT(sfo != NULL); | |
| 6658 pclass1 = s_pclass = active_pclass_ptr; | |
| 6659 VHCI_DEBUG(1, (CE_NOTE, NULL, "!(%s)failing over from %s\n", guid, | |
| 6660 (s_pclass == NULL ? "<none>" : s_pclass))); | |
| 6661 | |
| 6662 next_pathclass: | |
| 6663 | |
| 6664 rval = (*sfo->sfo_pathclass_next)(pclass1, &pclass2, | |
| 6665 vlun->svl_fops_ctpriv); | |
| 6666 if (rval == ENOENT) { | |
| 6667 if (s_pclass == NULL) { | |
| 6668 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(4)(%s): " | |
| 6669 "failed, no more pathclasses\n", guid)); | |
| 6670 goto done; | |
| 6671 } else { | |
| 6672 (*sfo->sfo_pathclass_next)(NULL, &pclass2, | |
| 6673 vlun->svl_fops_ctpriv); | |
| 6674 } | |
| 6675 } else if (rval == EINVAL) { | |
| 6676 vhci_log(CE_NOTE, vdip, "!Failover operation failed for " | |
| 6677 "device %s (GUID %s): Invalid path-class %s", | |
| 6678 ddi_node_name(cdip), guid, | |
| 6679 ((pclass1 == NULL) ? "<none>" : pclass1)); | |
| 6680 goto done; | |
| 6681 } | |
| 6682 if ((s_pclass != NULL) && (strcmp(pclass2, s_pclass) == 0)) { | |
| 6683 /* | |
| 6684 * paths are not currently available | |
| 6685 */ | |
| 6686 vhci_log(CE_NOTE, vdip, "!Failover path currently unavailable" | |
| 6687 " for device %s (GUID %s)", | |
| 6688 ddi_node_name(cdip), guid); | |
| 6689 goto done; | |
| 6690 } | |
| 6691 pip = npip = NULL; | |
| 6692 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(5.2)(%s): considering " | |
| 6693 "%s as failover destination\n", guid, pclass2)); | |
| 6694 sps = mdi_select_path(cdip, NULL, MDI_SELECT_STANDBY_PATH, NULL, &npip); | |
| 6695 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
| 6696 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(%s): no " | |
| 6697 "STANDBY paths found (status:%x)!\n", guid, sps)); | |
| 6698 pclass1 = pclass2; | |
| 6699 goto next_pathclass; | |
| 6700 } | |
| 6701 do { | |
| 6702 pclass = NULL; | |
| 6703 if ((mdi_prop_lookup_string(npip, "path-class", | |
| 6704 &pclass) != MDI_SUCCESS) || (strcmp(pclass2, | |
| 6705 pclass) != 0)) { | |
| 6706 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6707 "!vhci_failover(5.5)(%s): skipping path " | |
| 6708 "%p(%s)...\n", guid, (void *)npip, pclass)); | |
| 6709 pip = npip; | |
| 6710 sps = mdi_select_path(cdip, NULL, | |
| 6711 MDI_SELECT_STANDBY_PATH, pip, &npip); | |
| 6712 mdi_rele_path(pip); | |
| 6713 (void) mdi_prop_free(pclass); | |
| 6714 continue; | |
| 6715 } | |
| 6716 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(npip); | |
| 6717 | |
| 6718 /* | |
| 6719 * Issue READ at non-zer block on this STANDBY path. | |
| 6720 * Purple returns | |
| 6721 * 1. RESERVATION_CONFLICT if reservation is pending | |
| 6722 * 2. POR check condition if it reset happened. | |
| 6723 * 2. failover Check Conditions if one is already in progress. | |
| 6724 */ | |
| 6725 reserve_pending = 0; | |
| 6726 check_condition = 0; | |
| 6727 UA_condition = 0; | |
| 6728 | |
| 6729 bp = scsi_alloc_consistent_buf(&svp->svp_psd->sd_address, | |
| 6730 (struct buf *)NULL, DEV_BSIZE, B_READ, NULL, NULL); | |
| 6731 if (!bp) { | |
| 6732 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6733 "vhci_failover !No resources (buf)\n")); | |
| 6734 mdi_rele_path(npip); | |
| 6735 goto done; | |
| 6736 } | |
| 6737 pkt = scsi_init_pkt(&svp->svp_psd->sd_address, NULL, bp, | |
| 6738 CDB_GROUP1, sizeof (struct scsi_arq_status), 0, | |
| 6739 PKT_CONSISTENT, NULL, NULL); | |
| 6740 if (pkt) { | |
| 6741 (void) scsi_setup_cdb((union scsi_cdb *)(uintptr_t) | |
| 6742 pkt->pkt_cdbp, SCMD_READ, 1, 1, 0); | |
| 6743 pkt->pkt_flags = FLAG_NOINTR; | |
| 6744 check_path_again: | |
| 6745 pkt->pkt_time = 3*30; | |
| 6746 if (scsi_transport(pkt) == TRAN_ACCEPT) { | |
| 6747 switch (pkt->pkt_reason) { | |
| 6748 case CMD_CMPLT: | |
| 6749 switch (SCBP_C(pkt)) { | |
| 6750 case STATUS_GOOD: | |
| 6751 /* Already failed over */ | |
| 6752 activation_done = 1; | |
| 6753 break; | |
| 6754 case STATUS_RESERVATION_CONFLICT: | |
| 6755 reserve_pending = 1; | |
| 6756 break; | |
| 6757 case STATUS_CHECK: | |
| 6758 check_condition = 1; | |
| 6759 break; | |
| 6760 } | |
| 6761 } | |
| 6762 } | |
| 6763 if (check_condition && | |
| 6764 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 6765 struct scsi_extended_sense *sns = | |
| 6766 &(((struct scsi_arq_status *)(uintptr_t) | |
| 6767 (pkt->pkt_scbp))->sts_sensedata); | |
| 6768 if (sns->es_key == KEY_UNIT_ATTENTION && | |
| 6769 sns->es_add_code == 0x29) { | |
| 6770 /* Already failed over */ | |
| 6771 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6772 "!vhci_failover(7)(%s): " | |
| 6773 "path 0x%p POR UA condition\n", | |
| 6774 guid, (void *)npip)); | |
| 6775 if (UA_condition == 0) { | |
| 6776 UA_condition = 1; | |
| 6777 goto check_path_again; | |
| 6778 } | |
| 6779 } else { | |
| 6780 activation_done = 0; | |
| 6781 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6782 "!vhci_failover(%s): path 0x%p " | |
| 6783 "unhandled chkcond %x %x %x\n", | |
| 6784 guid, (void *)npip, sns->es_key, | |
| 6785 sns->es_add_code, | |
| 6786 sns->es_qual_code)); | |
| 6787 } | |
| 6788 } | |
| 6789 scsi_destroy_pkt(pkt); | |
| 6790 } | |
| 6791 scsi_free_consistent_buf(bp); | |
| 6792 | |
| 6793 if (activation_done) { | |
| 6794 mdi_rele_path(npip); | |
| 6795 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(7)(%s): " | |
| 6796 "path 0x%p already failedover\n", guid, | |
| 6797 (void *)npip)); | |
| 6798 break; | |
| 6799 } | |
| 6800 if (reserve_pending && (vlun->svl_xlf_capable == 0)) { | |
| 6801 (void) vhci_recovery_reset(vlun, | |
| 6802 &svp->svp_psd->sd_address, | |
| 6803 FALSE, VHCI_DEPTH_ALL); | |
| 6804 } | |
| 6805 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(6)(%s): " | |
| 6806 "activating path 0x%p(psd:%p)\n", guid, (void *)npip, | |
| 6807 (void *)svp->svp_psd)); | |
| 6808 if ((*sfo->sfo_path_activate)(svp->svp_psd, pclass2, | |
| 6809 vlun->svl_fops_ctpriv) == 0) { | |
| 6810 activation_done = 1; | |
| 6811 mdi_rele_path(npip); | |
| 6812 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(7)(%s): " | |
| 6813 "path 0x%p successfully activated\n", guid, | |
| 6814 (void *)npip)); | |
| 6815 break; | |
| 6816 } | |
| 6817 pip = npip; | |
| 6818 sps = mdi_select_path(cdip, NULL, MDI_SELECT_STANDBY_PATH, | |
| 6819 pip, &npip); | |
| 6820 mdi_rele_path(pip); | |
| 6821 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 6822 if (activation_done == 0) { | |
| 6823 pclass1 = pclass2; | |
| 6824 goto next_pathclass; | |
| 6825 } | |
| 6826 | |
| 6827 /* | |
| 6828 * if we are here, we have succeeded in activating path npip of | |
| 6829 * pathclass pclass2; let us validate all paths of pclass2 by | |
| 6830 * "ping"-ing each one and mark the good ones ONLINE | |
| 6831 * Also, set the state of the paths belonging to the previously | |
| 6832 * active pathclass to STANDBY | |
| 6833 */ | |
| 6834 pip = npip = NULL; | |
| 6835 sps = mdi_select_path(cdip, NULL, (MDI_SELECT_ONLINE_PATH | | |
| 6836 MDI_SELECT_STANDBY_PATH | MDI_SELECT_USER_DISABLE_PATH), | |
| 6837 NULL, &npip); | |
| 6838 if (npip == NULL || sps != MDI_SUCCESS) { | |
| 6839 VHCI_DEBUG(1, (CE_NOTE, NULL, "!Failover operation failed for " | |
| 6840 "device %s (GUID %s): paths may be busy\n", | |
| 6841 ddi_node_name(cdip), guid)); | |
| 6842 goto done; | |
| 6843 } | |
| 6844 do { | |
| 6845 (void) mdi_pi_get_state2(npip, &pi_state, &pi_ext_state); | |
| 6846 if (mdi_prop_lookup_string(npip, "path-class", &pclass) | |
| 6847 != MDI_SUCCESS) { | |
| 6848 pip = npip; | |
| 6849 sps = mdi_select_path(cdip, NULL, | |
| 6850 (MDI_SELECT_ONLINE_PATH | | |
| 6851 MDI_SELECT_STANDBY_PATH | | |
| 6852 MDI_SELECT_USER_DISABLE_PATH), | |
| 6853 pip, &npip); | |
| 6854 mdi_rele_path(pip); | |
| 6855 continue; | |
| 6856 } | |
| 6857 if (strcmp(pclass, pclass2) == 0) { | |
| 6858 if (pi_state == MDI_PATHINFO_STATE_STANDBY) { | |
| 6859 svp = (scsi_vhci_priv_t *) | |
| 6860 mdi_pi_get_vhci_private(npip); | |
| 6861 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6862 "!vhci_failover(8)(%s): " | |
| 6863 "pinging path 0x%p\n", | |
| 6864 guid, (void *)npip)); | |
| 6865 if ((*sfo->sfo_path_ping)(svp->svp_psd, | |
| 6866 vlun->svl_fops_ctpriv) == 1) { | |
| 6867 mdi_pi_set_state(npip, | |
| 6868 MDI_PATHINFO_STATE_ONLINE); | |
| 6869 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6870 "!vhci_failover(9)(%s): " | |
| 6871 "path 0x%p ping successful, " | |
| 6872 "marked online\n", guid, | |
| 6873 (void *)npip)); | |
| 6874 MDI_PI_ERRSTAT(npip, MDI_PI_FAILTO); | |
| 6875 } | |
| 6876 } | |
| 6877 } else if ((s_pclass != NULL) && (strcmp(pclass, s_pclass) | |
| 6878 == 0)) { | |
| 6879 if (pi_state == MDI_PATHINFO_STATE_ONLINE) { | |
| 6880 mdi_pi_set_state(npip, | |
| 6881 MDI_PATHINFO_STATE_STANDBY); | |
| 6882 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6883 "!vhci_failover(10)(%s): path 0x%p marked " | |
| 6884 "STANDBY\n", guid, (void *)npip)); | |
| 6885 MDI_PI_ERRSTAT(npip, MDI_PI_FAILFROM); | |
| 6886 } | |
| 6887 } | |
| 6888 (void) mdi_prop_free(pclass); | |
| 6889 pip = npip; | |
| 6890 sps = mdi_select_path(cdip, NULL, (MDI_SELECT_ONLINE_PATH | | |
| 6891 MDI_SELECT_STANDBY_PATH|MDI_SELECT_USER_DISABLE_PATH), | |
| 6892 pip, &npip); | |
| 6893 mdi_rele_path(pip); | |
| 6894 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 6895 | |
| 6896 /* | |
| 6897 * Update the AccessState of related MP-API TPGs | |
| 6898 */ | |
| 6899 (void) vhci_mpapi_update_tpg_acc_state_for_lu(vhci, vlun); | |
| 6900 | |
| 6901 vhci_log(CE_NOTE, vdip, "!Failover operation completed successfully " | |
| 6902 "for device %s (GUID %s): failed over from %s to %s", | |
| 6903 ddi_node_name(cdip), guid, ((s_pclass == NULL) ? "<none>" : | |
| 6904 s_pclass), pclass2); | |
| 6905 ptr1 = kmem_alloc(strlen(pclass2)+1, KM_SLEEP); | |
| 6906 (void) strlcpy(ptr1, pclass2, (strlen(pclass2)+1)); | |
| 6907 mutex_enter(&vlun->svl_mutex); | |
| 6908 ptr2 = vlun->svl_active_pclass; | |
| 6909 vlun->svl_active_pclass = ptr1; | |
| 6910 mutex_exit(&vlun->svl_mutex); | |
| 6911 if (ptr2) { | |
| 6912 kmem_free(ptr2, strlen(ptr2)+1); | |
| 6913 } | |
| 6914 mutex_enter(&vhci->vhci_mutex); | |
| 6915 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
| 6916 &vhci->vhci_reset_notify_listf); | |
| 6917 /* All reservations are cleared upon these resets. */ | |
| 6918 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 6919 mutex_exit(&vhci->vhci_mutex); | |
| 6920 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(11): DONE! Active " | |
| 6921 "pathclass for %s is now %s\n", guid, pclass2)); | |
| 6922 retval = MDI_SUCCESS; | |
| 6923 | |
| 6924 done: | |
| 6925 if (flags == MDI_FAILOVER_ASYNC) { | |
| 6926 VHCI_RELEASE_LUN(vlun); | |
| 6927 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_failover(12): DONE! " | |
| 6928 "releasing lun, as failover was ASYNC\n")); | |
| 6929 } else { | |
| 6930 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_failover(12): DONE! " | |
| 6931 "NOT releasing lun, as failover was SYNC\n")); | |
| 6932 } | |
| 6933 return (retval); | |
| 6934 } | |
| 6935 | |
| 6936 /* | |
| 6937 * vhci_client_attached is called after the successful attach of a | |
| 6938 * client devinfo node. | |
| 6939 */ | |
| 6940 static void | |
| 6941 vhci_client_attached(dev_info_t *cdip) | |
| 6942 { | |
| 6943 mdi_pathinfo_t *pip; | |
| 6944 int circular; | |
| 6945 | |
| 6946 /* | |
| 6947 * At this point the client has attached and it's instance number is | |
| 6948 * valid, so we can set up kstats. We need to do this here because it | |
| 6949 * is possible for paths to go online prior to client attach, in which | |
| 6950 * case the call to vhci_kstat_create_pathinfo in vhci_pathinfo_online | |
| 6951 * was a noop. | |
| 6952 */ | |
| 6953 ndi_devi_enter(cdip, &circular); | |
| 6954 for (pip = mdi_get_next_phci_path(cdip, NULL); pip; | |
| 6955 pip = mdi_get_next_phci_path(cdip, pip)) | |
| 6956 vhci_kstat_create_pathinfo(pip); | |
| 6957 ndi_devi_exit(cdip, circular); | |
| 6958 } | |
| 6959 | |
| 6960 /* | |
| 6961 * quiesce all of the online paths | |
| 6962 */ | |
| 6963 static int | |
| 6964 vhci_quiesce_paths(dev_info_t *vdip, dev_info_t *cdip, scsi_vhci_lun_t *vlun, | |
| 6965 char *guid, char *active_pclass_ptr) | |
| 6966 { | |
| 6967 scsi_vhci_priv_t *svp; | |
| 6968 char *s_pclass = NULL; | |
| 6969 mdi_pathinfo_t *npip, *pip; | |
| 6970 int sps; | |
| 6971 | |
| 6972 /* quiesce currently active paths */ | |
| 6973 s_pclass = NULL; | |
| 6974 pip = npip = NULL; | |
| 6975 sps = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, NULL, &npip); | |
| 6976 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
| 6977 return (1); | |
| 6978 } | |
| 6979 do { | |
| 6980 if (mdi_prop_lookup_string(npip, "path-class", | |
| 6981 &s_pclass) != MDI_SUCCESS) { | |
| 6982 mdi_rele_path(npip); | |
| 6983 vhci_log(CE_NOTE, vdip, "!Failover operation failed " | |
| 6984 "for device %s (GUID %s) due to an internal " | |
| 6985 "error", ddi_node_name(cdip), guid); | |
| 6986 return (1); | |
| 6987 } | |
| 6988 if (strcmp(s_pclass, active_pclass_ptr) == 0) { | |
| 6989 /* | |
| 6990 * quiesce path. Free s_pclass since | |
| 6991 * we don't need it anymore | |
| 6992 */ | |
| 6993 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6994 "!vhci_failover(2)(%s): failing over " | |
| 6995 "from %s; quiescing path %p\n", | |
| 6996 guid, s_pclass, (void *)npip)); | |
| 6997 (void) mdi_prop_free(s_pclass); | |
| 6998 svp = (scsi_vhci_priv_t *) | |
| 6999 mdi_pi_get_vhci_private(npip); | |
| 7000 if (svp == NULL) { | |
| 7001 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7002 "!vhci_failover(2.5)(%s): no " | |
| 7003 "client priv! %p offlined?\n", | |
| 7004 guid, (void *)npip)); | |
| 7005 pip = npip; | |
| 7006 sps = mdi_select_path(cdip, NULL, | |
| 7007 MDI_SELECT_ONLINE_PATH, pip, &npip); | |
| 7008 mdi_rele_path(pip); | |
| 7009 continue; | |
| 7010 } | |
| 7011 if (scsi_abort(&svp->svp_psd->sd_address, NULL) | |
| 7012 == 0) { | |
| 7013 (void) vhci_recovery_reset(vlun, | |
| 7014 &svp->svp_psd->sd_address, FALSE, | |
| 7015 VHCI_DEPTH_TARGET); | |
| 7016 } | |
| 7017 mutex_enter(&svp->svp_mutex); | |
| 7018 if (svp->svp_cmds == 0) { | |
| 7019 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7020 "!vhci_failover(3)(%s):" | |
| 7021 "quiesced path %p\n", guid, (void *)npip)); | |
| 7022 } else { | |
| 7023 while (svp->svp_cmds != 0) { | |
| 7024 cv_wait(&svp->svp_cv, &svp->svp_mutex); | |
| 7025 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7026 "!vhci_failover(3.cv)(%s):" | |
| 7027 "quiesced path %p\n", guid, | |
| 7028 (void *)npip)); | |
| 7029 } | |
| 7030 } | |
| 7031 mutex_exit(&svp->svp_mutex); | |
| 7032 } else { | |
| 7033 /* | |
| 7034 * make sure we freeup the memory | |
| 7035 */ | |
| 7036 (void) mdi_prop_free(s_pclass); | |
| 7037 } | |
| 7038 pip = npip; | |
| 7039 sps = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, | |
| 7040 pip, &npip); | |
| 7041 mdi_rele_path(pip); | |
| 7042 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 7043 return (0); | |
| 7044 } | |
| 7045 | |
| 7046 static struct scsi_vhci_lun * | |
| 7047 vhci_lun_lookup(dev_info_t *tgt_dip) | |
| 7048 { | |
| 7049 return ((struct scsi_vhci_lun *) | |
| 7050 mdi_client_get_vhci_private(tgt_dip)); | |
| 7051 } | |
| 7052 | |
| 7053 static struct scsi_vhci_lun * | |
| 7054 vhci_lun_lookup_alloc(dev_info_t *tgt_dip, char *guid, int *didalloc) | |
| 7055 { | |
| 7056 struct scsi_vhci_lun *svl; | |
| 7057 | |
| 7058 if (svl = vhci_lun_lookup(tgt_dip)) { | |
| 7059 return (svl); | |
| 7060 } | |
| 7061 | |
| 7062 svl = kmem_zalloc(sizeof (*svl), KM_SLEEP); | |
| 7063 svl->svl_lun_wwn = kmem_zalloc(strlen(guid)+1, KM_SLEEP); | |
| 7064 (void) strcpy(svl->svl_lun_wwn, guid); | |
| 7065 mutex_init(&svl->svl_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 7066 cv_init(&svl->svl_cv, NULL, CV_DRIVER, NULL); | |
| 7067 sema_init(&svl->svl_pgr_sema, 1, NULL, SEMA_DRIVER, NULL); | |
| 7068 svl->svl_waiting_for_activepath = 1; | |
| 7069 svl->svl_sector_size = 1; | |
| 7070 mdi_client_set_vhci_private(tgt_dip, svl); | |
| 7071 *didalloc = 1; | |
| 7072 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7073 "vhci_lun_lookup_alloc: guid %s vlun 0x%p\n", | |
| 7074 guid, (void *)svl)); | |
| 7075 return (svl); | |
| 7076 } | |
| 7077 | |
| 7078 static void | |
| 7079 vhci_lun_free(dev_info_t *tgt_dip) | |
| 7080 { | |
| 7081 struct scsi_vhci_lun *dvlp; | |
| 7082 char *guid; | |
|
4882
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
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4851
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|
7083 struct scsi_device *sd; |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
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4851
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changeset
|
7084 |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
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4851
diff
changeset
|
7085 /* |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
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4851
diff
changeset
|
7086 * The scsi_device was set to driver private during child node |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
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diff
changeset
|
7087 * initialization in the scsi_hba_bus_ctl(). |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
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4851
diff
changeset
|
7088 */ |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
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diff
changeset
|
7089 sd = (struct scsi_device *)ddi_get_driver_private(tgt_dip); |
| 4851 | 7090 |
| 7091 dvlp = (struct scsi_vhci_lun *) | |
| 7092 mdi_client_get_vhci_private(tgt_dip); | |
| 7093 ASSERT(dvlp != NULL); | |
| 7094 | |
| 7095 mdi_client_set_vhci_private(tgt_dip, NULL); | |
| 7096 | |
| 7097 guid = dvlp->svl_lun_wwn; | |
| 7098 ASSERT(guid != NULL); | |
| 7099 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_lun_free: %s\n", guid)); | |
| 7100 | |
| 7101 mutex_enter(&dvlp->svl_mutex); | |
| 7102 if (dvlp->svl_active_pclass != NULL) { | |
| 7103 kmem_free(dvlp->svl_active_pclass, | |
| 7104 strlen(dvlp->svl_active_pclass)+1); | |
| 7105 } | |
| 7106 dvlp->svl_active_pclass = NULL; | |
| 7107 mutex_exit(&dvlp->svl_mutex); | |
| 7108 | |
| 7109 if (dvlp->svl_lun_wwn != NULL) { | |
| 7110 kmem_free(dvlp->svl_lun_wwn, strlen(dvlp->svl_lun_wwn)+1); | |
| 7111 } | |
| 7112 dvlp->svl_lun_wwn = NULL; | |
| 7113 | |
|
6023
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
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4949
diff
changeset
|
7114 |
| 4851 | 7115 if (dvlp->svl_fops_name) { |
| 7116 kmem_free(dvlp->svl_fops_name, strlen(dvlp->svl_fops_name)+1); | |
| 7117 } | |
| 7118 dvlp->svl_fops_name = NULL; | |
| 7119 | |
|
6023
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
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4949
diff
changeset
|
7120 if (dvlp->svl_fops_ctpriv != NULL) { |
|
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7121 dvlp->svl_fops->sfo_device_unprobe(sd, dvlp->svl_fops_ctpriv); |
|
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
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4949
diff
changeset
|
7122 } |
|
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
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4949
diff
changeset
|
7123 |
| 4851 | 7124 if (dvlp->svl_flags & VLUN_TASK_D_ALIVE_FLG) |
| 7125 taskq_destroy(dvlp->svl_taskq); | |
| 7126 | |
| 7127 mutex_destroy(&dvlp->svl_mutex); | |
| 7128 cv_destroy(&dvlp->svl_cv); | |
| 7129 sema_destroy(&dvlp->svl_pgr_sema); | |
| 7130 kmem_free(dvlp, sizeof (*dvlp)); | |
|
4896
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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4882
diff
changeset
|
7131 /* |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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4882
diff
changeset
|
7132 * vhci_lun_free may be called before the tgt_dip |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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4882
diff
changeset
|
7133 * initialization so check if the sd is NULL. |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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4882
diff
changeset
|
7134 */ |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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diff
changeset
|
7135 if (sd != NULL) |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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diff
changeset
|
7136 sd->sd_address.a_hba_tran->tran_tgt_private = NULL; |
| 4851 | 7137 } |
| 7138 | |
| 7139 | |
| 7140 int | |
| 7141 vhci_do_scsi_cmd(struct scsi_pkt *pkt) | |
| 7142 { | |
| 7143 int err = 0; | |
| 7144 int retry_cnt = 0; | |
| 7145 struct scsi_extended_sense *sns; | |
| 7146 | |
| 7147 retry: | |
| 7148 err = scsi_poll(pkt); | |
| 7149 if (err) { | |
| 7150 if (pkt->pkt_cdbp[0] == SCMD_RELEASE) { | |
| 7151 if (SCBP_C(pkt) == STATUS_RESERVATION_CONFLICT) { | |
| 7152 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7153 "!v_s_do_s_c: RELEASE conflict\n")); | |
| 7154 return (0); | |
| 7155 } | |
| 7156 } | |
| 7157 if (retry_cnt++ < 3) { | |
| 7158 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7159 "!v_s_do_s_c:retry packet 0x%p " | |
| 7160 "status 0x%x reason %s", | |
| 7161 (void *)pkt, SCBP_C(pkt), | |
| 7162 scsi_rname(pkt->pkt_reason))); | |
| 7163 if ((pkt->pkt_reason == CMD_CMPLT) && | |
| 7164 (SCBP_C(pkt) == STATUS_CHECK) && | |
| 7165 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 7166 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
| 7167 (pkt->pkt_scbp))->sts_sensedata); | |
| 7168 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7169 "!v_s_do_s_c:retry " | |
| 7170 "packet 0x%p sense data %s", (void *)pkt, | |
| 7171 scsi_sname(sns->es_key))); | |
| 7172 } | |
| 7173 goto retry; | |
| 7174 } | |
| 7175 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7176 "!v_s_do_s_c: failed transport 0x%p 0x%x", | |
| 7177 (void *)pkt, SCBP_C(pkt))); | |
| 7178 return (0); | |
| 7179 } | |
| 7180 | |
| 7181 switch (pkt->pkt_reason) { | |
| 7182 case CMD_TIMEOUT: | |
| 7183 VHCI_DEBUG(1, (CE_WARN, NULL, "!pkt timed " | |
| 7184 "out (pkt 0x%p)", (void *)pkt)); | |
| 7185 return (0); | |
| 7186 case CMD_CMPLT: | |
| 7187 switch (SCBP_C(pkt)) { | |
| 7188 case STATUS_GOOD: | |
| 7189 break; | |
| 7190 case STATUS_CHECK: | |
| 7191 if (pkt->pkt_state & STATE_ARQ_DONE) { | |
| 7192 sns = &((( | |
| 7193 struct scsi_arq_status *) | |
| 7194 (uintptr_t) | |
| 7195 (pkt->pkt_scbp))-> | |
| 7196 sts_sensedata); | |
| 7197 if ((sns->es_key == | |
| 7198 KEY_UNIT_ATTENTION) || | |
| 7199 (sns->es_key == | |
| 7200 KEY_NOT_READY)) { | |
| 7201 /* | |
| 7202 * clear unit attn. | |
| 7203 */ | |
| 7204 | |
| 7205 VHCI_DEBUG(1, | |
| 7206 (CE_WARN, NULL, | |
| 7207 "!v_s_do_s_c: " | |
| 7208 "retry " | |
| 7209 "packet 0x%p sense " | |
| 7210 "data %s", | |
| 7211 (void *)pkt, | |
| 7212 scsi_sname | |
| 7213 (sns->es_key))); | |
| 7214 goto retry; | |
| 7215 } | |
| 7216 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 7217 "!ARQ while " | |
| 7218 "transporting " | |
| 7219 "(pkt 0x%p)", | |
| 7220 (void *)pkt)); | |
| 7221 return (0); | |
| 7222 } | |
| 7223 return (0); | |
| 7224 default: | |
| 7225 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7226 "!Bad status returned " | |
| 7227 "(pkt 0x%p, status %x)", | |
| 7228 (void *)pkt, SCBP_C(pkt))); | |
| 7229 return (0); | |
| 7230 } | |
| 7231 break; | |
| 7232 case CMD_INCOMPLETE: | |
| 7233 case CMD_RESET: | |
| 7234 case CMD_ABORTED: | |
| 7235 case CMD_TRAN_ERR: | |
| 7236 if (retry_cnt++ < 1) { | |
| 7237 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7238 "!v_s_do_s_c: retry packet 0x%p %s", | |
| 7239 (void *)pkt, scsi_rname(pkt->pkt_reason))); | |
| 7240 goto retry; | |
| 7241 } | |
| 7242 /* FALLTHROUGH */ | |
| 7243 default: | |
| 7244 VHCI_DEBUG(1, (CE_WARN, NULL, "!pkt did not " | |
| 7245 "complete successfully (pkt 0x%p," | |
| 7246 "reason %x)", (void *)pkt, pkt->pkt_reason)); | |
| 7247 return (0); | |
| 7248 } | |
| 7249 return (1); | |
| 7250 } | |
| 7251 | |
| 7252 static int | |
| 7253 vhci_quiesce_lun(struct scsi_vhci_lun *vlun) | |
| 7254 { | |
| 7255 mdi_pathinfo_t *pip, *spip; | |
| 7256 dev_info_t *cdip; | |
| 7257 struct scsi_vhci_priv *svp; | |
| 7258 mdi_pathinfo_state_t pstate; | |
| 7259 uint32_t p_ext_state; | |
| 7260 int circular; | |
| 7261 | |
| 7262 cdip = vlun->svl_dip; | |
| 7263 pip = spip = NULL; | |
| 7264 ndi_devi_enter(cdip, &circular); | |
| 7265 pip = mdi_get_next_phci_path(cdip, NULL); | |
| 7266 while (pip != NULL) { | |
| 7267 (void) mdi_pi_get_state2(pip, &pstate, &p_ext_state); | |
| 7268 if (pstate != MDI_PATHINFO_STATE_ONLINE) { | |
| 7269 spip = pip; | |
| 7270 pip = mdi_get_next_phci_path(cdip, spip); | |
| 7271 continue; | |
| 7272 } | |
| 7273 mdi_hold_path(pip); | |
| 7274 ndi_devi_exit(cdip, circular); | |
| 7275 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 7276 mutex_enter(&svp->svp_mutex); | |
| 7277 while (svp->svp_cmds != 0) { | |
| 7278 if (cv_timedwait(&svp->svp_cv, &svp->svp_mutex, | |
| 7279 ddi_get_lbolt() + drv_usectohz | |
| 7280 (vhci_path_quiesce_timeout * 1000000)) == -1) { | |
| 7281 mutex_exit(&svp->svp_mutex); | |
| 7282 mdi_rele_path(pip); | |
| 7283 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7284 "Quiesce of lun is not successful " | |
| 7285 "vlun: 0x%p.", (void *)vlun)); | |
| 7286 return (0); | |
| 7287 } | |
| 7288 } | |
| 7289 mutex_exit(&svp->svp_mutex); | |
| 7290 ndi_devi_enter(cdip, &circular); | |
| 7291 spip = pip; | |
| 7292 pip = mdi_get_next_phci_path(cdip, spip); | |
| 7293 mdi_rele_path(spip); | |
| 7294 } | |
| 7295 ndi_devi_exit(cdip, circular); | |
| 7296 return (1); | |
| 7297 } | |
| 7298 | |
| 7299 static int | |
| 7300 vhci_pgr_validate_and_register(scsi_vhci_priv_t *svp) | |
| 7301 { | |
| 7302 scsi_vhci_lun_t *vlun; | |
| 7303 vhci_prout_t *prout; | |
| 7304 int rval, success; | |
| 7305 mdi_pathinfo_t *pip, *npip; | |
| 7306 scsi_vhci_priv_t *osvp; | |
| 7307 dev_info_t *cdip; | |
| 7308 uchar_t cdb_1; | |
| 7309 uchar_t temp_res_key[MHIOC_RESV_KEY_SIZE]; | |
| 7310 | |
| 7311 | |
| 7312 /* | |
| 7313 * see if there are any other paths available; if none, | |
| 7314 * then there is nothing to do. | |
| 7315 */ | |
| 7316 cdip = svp->svp_svl->svl_dip; | |
| 7317 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH | | |
| 7318 MDI_SELECT_STANDBY_PATH, NULL, &pip); | |
| 7319 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 7320 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7321 "%s%d: vhci_pgr_validate_and_register: first path\n", | |
| 7322 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 7323 return (1); | |
| 7324 } | |
| 7325 | |
| 7326 vlun = svp->svp_svl; | |
| 7327 prout = &vlun->svl_prout; | |
| 7328 ASSERT(vlun->svl_pgr_active != 0); | |
| 7329 | |
| 7330 /* | |
| 7331 * When the path was busy/offlined, some other host might have | |
| 7332 * cleared this key. Validate key on some other path first. | |
| 7333 * If it fails, return failure. | |
| 7334 */ | |
| 7335 | |
| 7336 npip = pip; | |
| 7337 pip = NULL; | |
| 7338 success = 0; | |
| 7339 | |
| 7340 /* Save the res key */ | |
| 7341 bcopy((const void *)prout->res_key, | |
| 7342 (void *)temp_res_key, MHIOC_RESV_KEY_SIZE); | |
| 7343 | |
| 7344 /* | |
| 7345 * Sometimes CDB from application can be a Register_And_Ignore. | |
| 7346 * Instead of validation, this cdb would result in force registration. | |
| 7347 * Convert it to normal cdb for validation. | |
| 7348 * After that be sure to restore the cdb. | |
| 7349 */ | |
| 7350 cdb_1 = vlun->svl_cdb[1]; | |
| 7351 vlun->svl_cdb[1] &= 0xe0; | |
| 7352 | |
| 7353 do { | |
| 7354 osvp = (scsi_vhci_priv_t *) | |
| 7355 mdi_pi_get_vhci_private(npip); | |
| 7356 if (osvp == NULL) { | |
| 7357 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7358 "vhci_pgr_validate_and_register: no " | |
| 7359 "client priv! 0x%p offlined?\n", | |
| 7360 (void *)npip)); | |
| 7361 goto next_path_1; | |
| 7362 } | |
| 7363 | |
| 7364 if (osvp == svp) { | |
| 7365 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7366 "vhci_pgr_validate_and_register: same svp 0x%p" | |
| 7367 " npip 0x%p vlun 0x%p\n", | |
| 7368 (void *)svp, (void *)npip, (void *)vlun)); | |
| 7369 goto next_path_1; | |
| 7370 } | |
| 7371 | |
| 7372 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7373 "vhci_pgr_validate_and_register: First validate on" | |
| 7374 " osvp 0x%p being done. vlun 0x%p thread 0x%p Before bcopy" | |
| 7375 " cdb1 %x\n", (void *)osvp, (void *)vlun, | |
| 7376 (void *)curthread, vlun->svl_cdb[1])); | |
| 7377 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy:"); | |
| 7378 | |
| 7379 bcopy((const void *)prout->service_key, | |
| 7380 (void *)prout->res_key, MHIOC_RESV_KEY_SIZE); | |
| 7381 | |
| 7382 VHCI_DEBUG(4, (CE_WARN, NULL, "vlun 0x%p After bcopy", | |
| 7383 (void *)vlun)); | |
| 7384 vhci_print_prout_keys(vlun, "v_pgr_val_reg: after bcopy: "); | |
| 7385 | |
| 7386 rval = vhci_do_prout(osvp); | |
| 7387 if (rval == 1) { | |
| 7388 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7389 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7390 " validated thread 0x%p\n", ddi_driver_name(cdip), | |
| 7391 ddi_get_instance(cdip), (void *)curthread)); | |
| 7392 pip = npip; | |
| 7393 success = 1; | |
| 7394 break; | |
| 7395 } else { | |
| 7396 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7397 "vhci_pgr_validate_and_register: First validation" | |
| 7398 " on osvp 0x%p failed %x\n", (void *)osvp, rval)); | |
| 7399 vhci_print_prout_keys(vlun, "v_pgr_val_reg: failed:"); | |
| 7400 } | |
| 7401 | |
| 7402 /* | |
| 7403 * Try other paths | |
| 7404 */ | |
| 7405 next_path_1: | |
| 7406 pip = npip; | |
| 7407 rval = mdi_select_path(cdip, NULL, | |
| 7408 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
| 7409 pip, &npip); | |
| 7410 mdi_rele_path(pip); | |
| 7411 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
| 7412 | |
| 7413 | |
| 7414 /* Be sure to restore original cdb */ | |
| 7415 vlun->svl_cdb[1] = cdb_1; | |
| 7416 | |
| 7417 /* Restore the res_key */ | |
| 7418 bcopy((const void *)temp_res_key, | |
| 7419 (void *)prout->res_key, MHIOC_RESV_KEY_SIZE); | |
| 7420 | |
| 7421 /* | |
| 7422 * If key could not be registered on any path for the first time, | |
| 7423 * return success as online should still continue. | |
| 7424 */ | |
| 7425 if (success == 0) { | |
| 7426 return (1); | |
| 7427 } | |
| 7428 | |
| 7429 ASSERT(pip != NULL); | |
| 7430 | |
| 7431 /* | |
| 7432 * Force register on new path | |
| 7433 */ | |
| 7434 cdb_1 = vlun->svl_cdb[1]; /* store the cdb */ | |
| 7435 | |
| 7436 vlun->svl_cdb[1] &= 0xe0; | |
| 7437 vlun->svl_cdb[1] |= VHCI_PROUT_R_AND_IGNORE; | |
| 7438 | |
| 7439 vhci_print_prout_keys(vlun, "v_pgr_val_reg: keys before bcopy: "); | |
| 7440 | |
| 7441 bcopy((const void *)prout->active_service_key, | |
| 7442 (void *)prout->service_key, MHIOC_RESV_KEY_SIZE); | |
| 7443 bcopy((const void *)prout->active_res_key, | |
| 7444 (void *)prout->res_key, MHIOC_RESV_KEY_SIZE); | |
| 7445 | |
| 7446 vhci_print_prout_keys(vlun, "v_pgr_val_reg:keys after bcopy: "); | |
| 7447 | |
| 7448 rval = vhci_do_prout(svp); | |
| 7449 vlun->svl_cdb[1] = cdb_1; /* restore the cdb */ | |
| 7450 if (rval != 1) { | |
| 7451 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7452 "vhci_pgr_validate_and_register: register on new" | |
| 7453 " path 0x%p svp 0x%p failed %x\n", | |
| 7454 (void *)pip, (void *)svp, rval)); | |
| 7455 vhci_print_prout_keys(vlun, "v_pgr_val_reg: reg failed: "); | |
| 7456 mdi_rele_path(pip); | |
| 7457 return (0); | |
| 7458 } | |
| 7459 | |
| 7460 if (bcmp(prout->service_key, zero_key, MHIOC_RESV_KEY_SIZE) == 0) { | |
| 7461 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7462 "vhci_pgr_validate_and_register: zero service key\n")); | |
| 7463 mdi_rele_path(pip); | |
| 7464 return (rval); | |
| 7465 } | |
| 7466 | |
| 7467 /* | |
| 7468 * While the key was force registered, some other host might have | |
| 7469 * cleared the key. Re-validate key on another pre-existing path | |
| 7470 * before declaring success. | |
| 7471 */ | |
| 7472 npip = pip; | |
| 7473 pip = NULL; | |
| 7474 | |
| 7475 /* | |
| 7476 * Sometimes CDB from application can be Register and Ignore. | |
| 7477 * Instead of validation, it would result in force registration. | |
| 7478 * Convert it to normal cdb for validation. | |
| 7479 * After that be sure to restore the cdb. | |
| 7480 */ | |
| 7481 cdb_1 = vlun->svl_cdb[1]; | |
| 7482 vlun->svl_cdb[1] &= 0xe0; | |
| 7483 success = 0; | |
| 7484 | |
| 7485 do { | |
| 7486 osvp = (scsi_vhci_priv_t *) | |
| 7487 mdi_pi_get_vhci_private(npip); | |
| 7488 if (osvp == NULL) { | |
| 7489 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7490 "vhci_pgr_validate_and_register: no " | |
| 7491 "client priv! 0x%p offlined?\n", | |
| 7492 (void *)npip)); | |
| 7493 goto next_path_2; | |
| 7494 } | |
| 7495 | |
| 7496 if (osvp == svp) { | |
| 7497 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7498 "vhci_pgr_validate_and_register: same osvp 0x%p" | |
| 7499 " npip 0x%p vlun 0x%p\n", | |
| 7500 (void *)svp, (void *)npip, (void *)vlun)); | |
| 7501 goto next_path_2; | |
| 7502 } | |
| 7503 | |
| 7504 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7505 "vhci_pgr_validate_and_register: Re-validation on" | |
| 7506 " osvp 0x%p being done. vlun 0x%p Before bcopy cdb1 %x\n", | |
| 7507 (void *)osvp, (void *)vlun, vlun->svl_cdb[1])); | |
| 7508 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
| 7509 | |
| 7510 bcopy((const void *)prout->service_key, | |
| 7511 (void *)prout->res_key, MHIOC_RESV_KEY_SIZE); | |
| 7512 | |
| 7513 vhci_print_prout_keys(vlun, "v_pgr_val_reg: after bcopy: "); | |
| 7514 | |
| 7515 rval = vhci_do_prout(osvp); | |
| 7516 if (rval == 1) { | |
| 7517 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7518 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7519 " validated thread 0x%p\n", ddi_driver_name(cdip), | |
| 7520 ddi_get_instance(cdip), (void *)curthread)); | |
| 7521 pip = npip; | |
| 7522 success = 1; | |
| 7523 break; | |
| 7524 } else { | |
| 7525 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7526 "vhci_pgr_validate_and_register: Re-validation on" | |
| 7527 " osvp 0x%p failed %x\n", (void *)osvp, rval)); | |
| 7528 vhci_print_prout_keys(vlun, | |
| 7529 "v_pgr_val_reg: reval failed: "); | |
| 7530 } | |
| 7531 | |
| 7532 /* | |
| 7533 * Try other paths | |
| 7534 */ | |
| 7535 next_path_2: | |
| 7536 pip = npip; | |
| 7537 rval = mdi_select_path(cdip, NULL, | |
| 7538 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
| 7539 pip, &npip); | |
| 7540 mdi_rele_path(pip); | |
| 7541 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
| 7542 | |
| 7543 /* Be sure to restore original cdb */ | |
| 7544 vlun->svl_cdb[1] = cdb_1; | |
| 7545 | |
| 7546 if (success == 1) { | |
| 7547 /* Successfully validated registration */ | |
| 7548 mdi_rele_path(pip); | |
| 7549 return (1); | |
| 7550 } | |
| 7551 | |
| 7552 VHCI_DEBUG(4, (CE_WARN, NULL, "key validation failed")); | |
| 7553 | |
| 7554 /* | |
| 7555 * key invalid, back out by registering key value of 0 | |
| 7556 */ | |
| 7557 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7558 "vhci_pgr_validate_and_register: backout on" | |
| 7559 " svp 0x%p being done\n", (void *)svp)); | |
| 7560 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
| 7561 | |
| 7562 bcopy((const void *)prout->service_key, (void *)prout->res_key, | |
| 7563 MHIOC_RESV_KEY_SIZE); | |
| 7564 bzero((void *)prout->service_key, MHIOC_RESV_KEY_SIZE); | |
| 7565 | |
| 7566 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
| 7567 | |
| 7568 /* | |
| 7569 * Get a new path | |
| 7570 */ | |
| 7571 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH | | |
| 7572 MDI_SELECT_STANDBY_PATH, NULL, &pip); | |
| 7573 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 7574 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7575 "%s%d: vhci_pgr_validate_and_register: no valid pip\n", | |
| 7576 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 7577 return (0); | |
| 7578 } | |
| 7579 | |
| 7580 if ((rval = vhci_do_prout(svp)) != 1) { | |
| 7581 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7582 "vhci_pgr_validate_and_register: backout on" | |
| 7583 " svp 0x%p failed\n", (void *)svp)); | |
| 7584 vhci_print_prout_keys(vlun, "backout failed"); | |
| 7585 | |
| 7586 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 7587 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7588 " validation and backout failed", ddi_driver_name(cdip), | |
| 7589 ddi_get_instance(cdip))); | |
| 7590 if (rval == VHCI_PGR_ILLEGALOP) { | |
| 7591 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 7592 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7593 " already cleared", ddi_driver_name(cdip), | |
| 7594 ddi_get_instance(cdip))); | |
| 7595 rval = 1; | |
| 7596 } else | |
| 7597 rval = 0; | |
| 7598 } else { | |
| 7599 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7600 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7601 " validation failed, key backed out\n", | |
| 7602 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 7603 vhci_print_prout_keys(vlun, "v_pgr_val_reg: key backed out: "); | |
| 7604 } | |
| 7605 mdi_rele_path(pip); | |
| 7606 | |
| 7607 return (rval); | |
| 7608 } | |
| 7609 | |
| 7610 /* | |
| 7611 * taskq routine to dispatch a scsi cmd to vhci_scsi_start. This ensures | |
| 7612 * that vhci_scsi_start is not called in interrupt context. | |
| 7613 * As the upper layer gets TRAN_ACCEPT when the command is dispatched, we | |
| 7614 * need to complete the command if something goes wrong. | |
| 7615 */ | |
| 7616 static void | |
| 7617 vhci_dispatch_scsi_start(void *arg) | |
| 7618 { | |
| 7619 struct vhci_pkt *vpkt = (struct vhci_pkt *)arg; | |
| 7620 struct scsi_pkt *tpkt = vpkt->vpkt_tgt_pkt; | |
| 7621 int rval = TRAN_BUSY; | |
| 7622 | |
| 7623 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_dispatch_scsi_start: sending" | |
| 7624 " scsi-2 reserve for 0x%p\n", | |
| 7625 (void *)ADDR2DIP(&(vpkt->vpkt_tgt_pkt->pkt_address)))); | |
| 7626 | |
| 7627 /* | |
| 7628 * To prevent the taskq from being called recursively we set the | |
| 7629 * the VHCI_PKT_THRU_TASKQ bit in the vhci_pkt_states. | |
| 7630 */ | |
| 7631 vpkt->vpkt_state |= VHCI_PKT_THRU_TASKQ; | |
| 7632 | |
| 7633 /* | |
| 7634 * Wait for the transport to get ready to send packets | |
| 7635 * and if it times out, it will return something other than | |
| 7636 * TRAN_BUSY. The vhci_reserve_delay may want to | |
| 7637 * get tuned for other transports and is therefore a global. | |
| 7638 * Using delay since this routine is called by taskq dispatch | |
| 7639 * and not called during interrupt context. | |
| 7640 */ | |
| 7641 while ((rval = vhci_scsi_start(&(vpkt->vpkt_tgt_pkt->pkt_address), | |
| 7642 vpkt->vpkt_tgt_pkt)) == TRAN_BUSY) { | |
| 7643 delay(drv_usectohz(vhci_reserve_delay)); | |
| 7644 } | |
| 7645 | |
| 7646 switch (rval) { | |
| 7647 case TRAN_ACCEPT: | |
| 7648 return; | |
| 7649 | |
| 7650 default: | |
| 7651 /* | |
| 7652 * This pkt shall be retried, and to ensure another taskq | |
| 7653 * is dispatched for it, clear the VHCI_PKT_THRU_TASKQ | |
| 7654 * flag. | |
| 7655 */ | |
| 7656 vpkt->vpkt_state &= ~VHCI_PKT_THRU_TASKQ; | |
| 7657 | |
| 7658 /* Ensure that the pkt is retried without a reset */ | |
| 7659 tpkt->pkt_reason = CMD_ABORTED; | |
| 7660 tpkt->pkt_statistics |= STAT_ABORTED; | |
| 7661 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_dispatch_scsi_start: " | |
| 7662 "TRAN_rval %d returned for dip 0x%p", rval, | |
| 7663 (void *)ADDR2DIP(&(vpkt->vpkt_tgt_pkt->pkt_address)))); | |
| 7664 break; | |
| 7665 } | |
| 7666 | |
| 7667 /* | |
| 7668 * vpkt_org_vpkt should always be NULL here if the retry command | |
| 7669 * has been successfully dispatched. If vpkt_org_vpkt != NULL at | |
| 7670 * this point, it is an error so restore the original vpkt and | |
| 7671 * return an error to the target driver so it can retry the | |
| 7672 * command as appropriate. | |
| 7673 */ | |
| 7674 if (vpkt->vpkt_org_vpkt != NULL) { | |
| 7675 struct vhci_pkt *new_vpkt = vpkt; | |
| 7676 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
| 7677 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 7678 | |
| 7679 vpkt = vpkt->vpkt_org_vpkt; | |
| 7680 | |
| 7681 vpkt->vpkt_tgt_pkt->pkt_reason = tpkt->pkt_reason; | |
| 7682 vpkt->vpkt_tgt_pkt->pkt_statistics = tpkt->pkt_statistics; | |
| 7683 | |
| 7684 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 7685 new_vpkt->vpkt_tgt_pkt); | |
| 7686 | |
| 7687 tpkt = vpkt->vpkt_tgt_pkt; | |
| 7688 } | |
| 7689 | |
| 7690 if (tpkt->pkt_comp) { | |
| 7691 (*tpkt->pkt_comp)(tpkt); | |
| 7692 } | |
| 7693 } | |
| 7694 | |
| 7695 static void | |
| 7696 vhci_initiate_auto_failback(void *arg) | |
| 7697 { | |
| 7698 struct scsi_vhci_lun *vlun = (struct scsi_vhci_lun *)arg; | |
| 7699 dev_info_t *vdip, *cdip; | |
| 7700 int held; | |
| 7701 | |
| 7702 cdip = vlun->svl_dip; | |
| 7703 vdip = ddi_get_parent(cdip); | |
| 7704 | |
| 7705 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
| 7706 | |
| 7707 /* | |
| 7708 * Perform a final check to see if the active path class is indeed | |
| 7709 * not the prefered path class. As in the time the auto failback | |
| 7710 * was dispatched, an external failover could have been detected. | |
| 7711 * [Some other host could have detected this condition and triggered | |
| 7712 * the auto failback before]. | |
| 7713 * In such a case if we go ahead with failover we will be negating the | |
| 7714 * whole purpose of auto failback. | |
| 7715 */ | |
| 7716 mutex_enter(&vlun->svl_mutex); | |
| 7717 if (vlun->svl_active_pclass != NULL) { | |
| 7718 char *best_pclass; | |
| 7719 struct scsi_failover_ops *fo; | |
| 7720 | |
| 7721 fo = vlun->svl_fops; | |
| 7722 | |
| 7723 (*fo->sfo_pathclass_next)(NULL, &best_pclass, | |
| 7724 vlun->svl_fops_ctpriv); | |
| 7725 if (strcmp(vlun->svl_active_pclass, best_pclass) == 0) { | |
| 7726 mutex_exit(&vlun->svl_mutex); | |
| 7727 VHCI_RELEASE_LUN(vlun); | |
| 7728 VHCI_DEBUG(1, (CE_NOTE, NULL, "Not initiating " | |
| 7729 "auto failback for %s as %s pathclass already " | |
| 7730 "active.\n", vlun->svl_lun_wwn, best_pclass)); | |
| 7731 return; | |
| 7732 } | |
| 7733 } | |
| 7734 mutex_exit(&vlun->svl_mutex); | |
| 7735 if (mdi_failover(vdip, vlun->svl_dip, MDI_FAILOVER_SYNC) | |
| 7736 == MDI_SUCCESS) { | |
| 7737 vhci_log(CE_NOTE, vdip, "!Auto failback operation " | |
| 7738 "succeeded for device %s (GUID %s)", | |
| 7739 ddi_node_name(cdip), vlun->svl_lun_wwn); | |
| 7740 } else { | |
| 7741 vhci_log(CE_NOTE, vdip, "!Auto failback operation " | |
| 7742 "failed for device %s (GUID %s)", | |
| 7743 ddi_node_name(cdip), vlun->svl_lun_wwn); | |
| 7744 } | |
| 7745 VHCI_RELEASE_LUN(vlun); | |
| 7746 } | |
| 7747 | |
| 7748 #ifdef DEBUG | |
| 7749 static void | |
| 7750 vhci_print_prin_keys(vhci_prin_readkeys_t *prin, int numkeys) | |
| 7751 { | |
| 7752 uchar_t index = 0; | |
| 7753 char buf[100]; | |
| 7754 | |
| 7755 VHCI_DEBUG(5, (CE_NOTE, NULL, "num keys %d\n", numkeys)); | |
| 7756 | |
| 7757 while (index < numkeys) { | |
| 7758 bcopy(&prin->keylist[index], buf, MHIOC_RESV_KEY_SIZE); | |
| 7759 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 7760 "%02x%02x%02x%02x%02x%02x%02x%02x\t", | |
| 7761 buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], | |
| 7762 buf[7])); | |
| 7763 index++; | |
| 7764 } | |
| 7765 } | |
| 7766 #endif | |
| 7767 | |
| 7768 static void | |
| 7769 vhci_print_prout_keys(scsi_vhci_lun_t *vlun, char *msg) | |
| 7770 { | |
| 7771 int i; | |
| 7772 vhci_prout_t *prout; | |
| 7773 char buf1[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7774 char buf2[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7775 char buf3[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7776 char buf4[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7777 | |
| 7778 prout = &vlun->svl_prout; | |
| 7779 | |
| 7780 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7781 (void) sprintf(&buf1[4*i], "[%02x]", prout->res_key[i]); | |
| 7782 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7783 (void) sprintf(&buf2[(4*i)], "[%02x]", prout->service_key[i]); | |
| 7784 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7785 (void) sprintf(&buf3[4*i], "[%02x]", prout->active_res_key[i]); | |
| 7786 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7787 (void) sprintf(&buf4[4*i], "[%02x]", | |
| 7788 prout->active_service_key[i]); | |
| 7789 | |
| 7790 /* Printing all in one go. Otherwise it will jumble up */ | |
| 7791 VHCI_DEBUG(5, (CE_CONT, NULL, "%s vlun 0x%p, thread 0x%p\n" | |
| 7792 "res_key: : %s\n" | |
| 7793 "service_key : %s\n" | |
| 7794 "active_res_key : %s\n" | |
| 7795 "active_service_key: %s\n", | |
| 7796 msg, (void *)vlun, (void *)curthread, buf1, buf2, buf3, buf4)); | |
| 7797 } | |
| 7798 | |
| 7799 /* | |
| 7800 * Called from vhci_scsi_start to update the pHCI pkt with target packet. | |
| 7801 */ | |
| 7802 static void | |
| 7803 vhci_update_pHCI_pkt(struct vhci_pkt *vpkt, struct scsi_pkt *pkt) | |
| 7804 { | |
| 7805 | |
| 7806 ASSERT(vpkt->vpkt_hba_pkt); | |
| 7807 | |
| 7808 vpkt->vpkt_hba_pkt->pkt_flags = pkt->pkt_flags; | |
| 7809 vpkt->vpkt_hba_pkt->pkt_flags |= FLAG_NOQUEUE; | |
| 7810 | |
| 7811 if ((vpkt->vpkt_hba_pkt->pkt_flags & FLAG_NOINTR) || | |
| 7812 MDI_PI_IS_SUSPENDED(vpkt->vpkt_path)) { | |
| 7813 /* | |
| 7814 * Polled Command is requested or HBA is in | |
| 7815 * suspended state | |
| 7816 */ | |
| 7817 vpkt->vpkt_hba_pkt->pkt_flags |= FLAG_NOINTR; | |
| 7818 vpkt->vpkt_hba_pkt->pkt_comp = NULL; | |
| 7819 } else { | |
| 7820 vpkt->vpkt_hba_pkt->pkt_comp = vhci_intr; | |
| 7821 } | |
| 7822 vpkt->vpkt_hba_pkt->pkt_time = pkt->pkt_time; | |
| 7823 bcopy(pkt->pkt_cdbp, vpkt->vpkt_hba_pkt->pkt_cdbp, | |
| 7824 vpkt->vpkt_tgt_init_cdblen); | |
| 7825 vpkt->vpkt_hba_pkt->pkt_resid = pkt->pkt_resid; | |
| 7826 | |
| 7827 /* Re-initialize the following pHCI packet state information */ | |
| 7828 vpkt->vpkt_hba_pkt->pkt_state = 0; | |
| 7829 vpkt->vpkt_hba_pkt->pkt_statistics = 0; | |
| 7830 vpkt->vpkt_hba_pkt->pkt_reason = 0; | |
| 7831 } | |
| 7832 | |
| 7833 static int | |
| 7834 vhci_scsi_bus_power(dev_info_t *parent, void *impl_arg, pm_bus_power_op_t op, | |
| 7835 void *arg, void *result) | |
| 7836 { | |
| 7837 int ret = DDI_SUCCESS; | |
| 7838 | |
| 7839 /* | |
| 7840 * Generic processing in MPxIO framework | |
| 7841 */ | |
| 7842 ret = mdi_bus_power(parent, impl_arg, op, arg, result); | |
| 7843 | |
| 7844 switch (ret) { | |
| 7845 case MDI_SUCCESS: | |
| 7846 ret = DDI_SUCCESS; | |
| 7847 break; | |
| 7848 case MDI_FAILURE: | |
| 7849 ret = DDI_FAILURE; | |
| 7850 break; | |
| 7851 default: | |
| 7852 break; | |
| 7853 } | |
| 7854 | |
| 7855 return (ret); | |
| 7856 } | |
| 7857 | |
| 7858 static int | |
| 7859 vhci_pHCI_cap(struct scsi_address *ap, char *cap, int val, int whom, | |
| 7860 mdi_pathinfo_t *pip) | |
| 7861 { | |
| 7862 dev_info_t *cdip; | |
| 7863 mdi_pathinfo_t *npip = NULL; | |
| 7864 scsi_vhci_priv_t *svp = NULL; | |
| 7865 struct scsi_address *pap = NULL; | |
| 7866 scsi_hba_tran_t *hba = NULL; | |
| 7867 int sps; | |
| 7868 int mps_flag; | |
| 7869 int rval = 0; | |
| 7870 | |
| 7871 mps_flag = (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH); | |
| 7872 if (pip) { | |
| 7873 /* | |
| 7874 * If the call is from vhci_pathinfo_state_change, | |
| 7875 * then this path was busy and is becoming ready to accept IO. | |
| 7876 */ | |
| 7877 ASSERT(ap != NULL); | |
| 7878 hba = ap->a_hba_tran; | |
| 7879 ASSERT(hba != NULL); | |
| 7880 rval = scsi_ifsetcap(ap, cap, val, whom); | |
| 7881 | |
| 7882 VHCI_DEBUG(2, (CE_NOTE, NULL, | |
| 7883 "!vhci_pHCI_cap: only on path %p, ap %p, rval %x\n", | |
| 7884 (void *)pip, (void *)ap, rval)); | |
| 7885 | |
| 7886 return (rval); | |
| 7887 } | |
| 7888 | |
| 7889 /* | |
| 7890 * Set capability on all the pHCIs. | |
| 7891 * If any path is busy, then the capability would be set by | |
| 7892 * vhci_pathinfo_state_change. | |
| 7893 */ | |
| 7894 | |
| 7895 cdip = ADDR2DIP(ap); | |
| 7896 ASSERT(cdip != NULL); | |
| 7897 sps = mdi_select_path(cdip, NULL, mps_flag, NULL, &pip); | |
| 7898 if ((sps != MDI_SUCCESS) || (pip == NULL)) { | |
| 7899 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 7900 "!vhci_pHCI_cap: Unable to get a path, dip 0x%p", | |
| 7901 (void *)cdip)); | |
| 7902 return (0); | |
| 7903 } | |
| 7904 | |
| 7905 again: | |
| 7906 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 7907 if (svp == NULL) { | |
| 7908 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_pHCI_cap: " | |
| 7909 "priv is NULL, pip 0x%p", (void *)pip)); | |
| 7910 mdi_rele_path(pip); | |
| 7911 return (rval); | |
| 7912 } | |
| 7913 | |
| 7914 if (svp->svp_psd == NULL) { | |
| 7915 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_pHCI_cap: " | |
| 7916 "psd is NULL, pip 0x%p, svp 0x%p", | |
| 7917 (void *)pip, (void *)svp)); | |
| 7918 mdi_rele_path(pip); | |
| 7919 return (rval); | |
| 7920 } | |
| 7921 | |
| 7922 pap = &svp->svp_psd->sd_address; | |
| 7923 ASSERT(pap != NULL); | |
| 7924 hba = pap->a_hba_tran; | |
| 7925 ASSERT(hba != NULL); | |
| 7926 | |
| 7927 if (hba->tran_setcap != NULL) { | |
| 7928 rval = scsi_ifsetcap(pap, cap, val, whom); | |
| 7929 | |
| 7930 VHCI_DEBUG(2, (CE_NOTE, NULL, | |
| 7931 "!vhci_pHCI_cap: path %p, ap %p, rval %x\n", | |
| 7932 (void *)pip, (void *)ap, rval)); | |
| 7933 | |
| 7934 /* | |
| 7935 * Select next path and issue the setcap, repeat | |
| 7936 * until all paths are exhausted | |
| 7937 */ | |
| 7938 sps = mdi_select_path(cdip, NULL, mps_flag, pip, &npip); | |
| 7939 if ((sps != MDI_SUCCESS) || (npip == NULL)) { | |
| 7940 mdi_rele_path(pip); | |
| 7941 return (1); | |
| 7942 } | |
| 7943 mdi_rele_path(pip); | |
| 7944 pip = npip; | |
| 7945 goto again; | |
| 7946 } | |
| 7947 mdi_rele_path(pip); | |
| 7948 return (rval); | |
| 7949 } | |
| 7950 | |
| 7951 static int | |
| 7952 vhci_scsi_bus_config(dev_info_t *pdip, uint_t flags, ddi_bus_config_op_t op, | |
| 7953 void *arg, dev_info_t **child) | |
| 7954 { | |
| 7955 char *guid; | |
| 7956 | |
| 7957 if (op == BUS_CONFIG_ONE || op == BUS_UNCONFIG_ONE) | |
| 7958 guid = vhci_devnm_to_guid((char *)arg); | |
| 7959 else | |
| 7960 guid = NULL; | |
| 7961 | |
| 7962 if (mdi_vhci_bus_config(pdip, flags, op, arg, child, guid) | |
| 7963 == MDI_SUCCESS) | |
| 7964 return (NDI_SUCCESS); | |
| 7965 else | |
| 7966 return (NDI_FAILURE); | |
| 7967 } | |
| 7968 | |
| 7969 /* | |
| 7970 * Take the original vhci_pkt, create a duplicate of the pkt for resending | |
| 7971 * as though it originated in ssd. | |
| 7972 */ | |
| 7973 static struct scsi_pkt * | |
| 7974 vhci_create_retry_pkt(struct vhci_pkt *vpkt) | |
| 7975 { | |
| 7976 struct vhci_pkt *new_vpkt = NULL; | |
| 7977 struct scsi_pkt *pkt = NULL; | |
| 7978 | |
| 7979 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
| 7980 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 7981 | |
| 7982 /* | |
| 7983 * Ensure consistent data at completion time by setting PKT_CONSISTENT | |
| 7984 */ | |
| 7985 pkt = vhci_scsi_init_pkt(&svp->svp_psd->sd_address, pkt, | |
| 7986 vpkt->vpkt_tgt_init_bp, vpkt->vpkt_tgt_init_cdblen, | |
| 7987 vpkt->vpkt_tgt_init_scblen, vpkt->vpkt_tgt_init_privlen, | |
| 7988 PKT_CONSISTENT, | |
| 7989 NULL_FUNC, NULL); | |
| 7990 if (pkt != NULL) { | |
| 7991 new_vpkt = TGTPKT2VHCIPKT(pkt); | |
| 7992 | |
| 7993 pkt->pkt_address = vpkt->vpkt_tgt_pkt->pkt_address; | |
| 7994 pkt->pkt_flags = vpkt->vpkt_tgt_pkt->pkt_flags; | |
| 7995 pkt->pkt_time = vpkt->vpkt_tgt_pkt->pkt_time; | |
| 7996 pkt->pkt_comp = vpkt->vpkt_tgt_pkt->pkt_comp; | |
| 7997 | |
| 7998 pkt->pkt_resid = 0; | |
| 7999 pkt->pkt_statistics = 0; | |
| 8000 pkt->pkt_reason = 0; | |
| 8001 | |
| 8002 bcopy(vpkt->vpkt_tgt_pkt->pkt_cdbp, | |
| 8003 pkt->pkt_cdbp, vpkt->vpkt_tgt_init_cdblen); | |
| 8004 | |
| 8005 /* | |
| 8006 * Save a pointer to the original vhci_pkt | |
| 8007 */ | |
| 8008 new_vpkt->vpkt_org_vpkt = vpkt; | |
| 8009 } | |
| 8010 | |
| 8011 return (pkt); | |
| 8012 } | |
| 8013 | |
| 8014 /* | |
| 8015 * Copy the successful completion information from the hba packet into | |
| 8016 * the original target pkt from the upper layer. Returns the original | |
| 8017 * vpkt and destroys the new vpkt from the internal retry. | |
| 8018 */ | |
| 8019 static struct vhci_pkt * | |
| 8020 vhci_sync_retry_pkt(struct vhci_pkt *vpkt) | |
| 8021 { | |
| 8022 struct vhci_pkt *ret_vpkt = NULL; | |
| 8023 struct scsi_pkt *tpkt = NULL; | |
| 8024 struct scsi_pkt *hba_pkt = NULL; | |
| 8025 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
| 8026 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 8027 | |
| 8028 ASSERT(vpkt->vpkt_org_vpkt != NULL); | |
| 8029 VHCI_DEBUG(0, (CE_NOTE, NULL, "vhci_sync_retry_pkt: Retry pkt " | |
| 8030 "completed successfully!\n")); | |
| 8031 | |
| 8032 ret_vpkt = vpkt->vpkt_org_vpkt; | |
| 8033 tpkt = ret_vpkt->vpkt_tgt_pkt; | |
| 8034 hba_pkt = vpkt->vpkt_hba_pkt; | |
| 8035 | |
| 8036 /* | |
| 8037 * Copy the good status into the target driver's packet | |
| 8038 */ | |
| 8039 *(tpkt->pkt_scbp) = *(hba_pkt->pkt_scbp); | |
| 8040 tpkt->pkt_resid = hba_pkt->pkt_resid; | |
| 8041 tpkt->pkt_state = hba_pkt->pkt_state; | |
| 8042 tpkt->pkt_statistics = hba_pkt->pkt_statistics; | |
| 8043 tpkt->pkt_reason = hba_pkt->pkt_reason; | |
| 8044 | |
| 8045 /* | |
| 8046 * Destroy the internally created vpkt for the retry | |
| 8047 */ | |
| 8048 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 8049 vpkt->vpkt_tgt_pkt); | |
| 8050 | |
| 8051 return (ret_vpkt); | |
| 8052 } | |
| 8053 | |
| 8054 /* restart the request sense request */ | |
| 8055 static void | |
| 8056 vhci_uscsi_restart_sense(void *arg) | |
| 8057 { | |
| 8058 struct buf *rqbp; | |
| 8059 struct buf *bp; | |
| 8060 struct scsi_pkt *rqpkt = (struct scsi_pkt *)arg; | |
| 8061 mp_uscsi_cmd_t *mp_uscmdp; | |
| 8062 | |
| 8063 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8064 "vhci_uscsi_restart_sense: enter: rqpkt: %p", (void *)rqpkt)); | |
| 8065 | |
| 8066 if (scsi_transport(rqpkt) != TRAN_ACCEPT) { | |
| 8067 /* if it fails - need to wakeup the original command */ | |
| 8068 mp_uscmdp = rqpkt->pkt_private; | |
| 8069 bp = mp_uscmdp->cmdbp; | |
| 8070 rqbp = mp_uscmdp->rqbp; | |
| 8071 ASSERT(mp_uscmdp && bp && rqbp); | |
| 8072 scsi_free_consistent_buf(rqbp); | |
| 8073 scsi_destroy_pkt(rqpkt); | |
| 8074 bp->b_resid = bp->b_bcount; | |
| 8075 bioerror(bp, EIO); | |
| 8076 biodone(bp); | |
| 8077 } | |
| 8078 } | |
| 8079 | |
| 8080 /* | |
| 8081 * auto-rqsense is not enabled so we have to retrieve the request sense | |
| 8082 * manually. | |
| 8083 */ | |
| 8084 static int | |
| 8085 vhci_uscsi_send_sense(struct scsi_pkt *pkt, mp_uscsi_cmd_t *mp_uscmdp) | |
| 8086 { | |
| 8087 struct buf *rqbp, *cmdbp; | |
| 8088 struct scsi_pkt *rqpkt; | |
| 8089 int rval = 0; | |
| 8090 | |
| 8091 cmdbp = mp_uscmdp->cmdbp; | |
| 8092 ASSERT(cmdbp != NULL); | |
| 8093 | |
| 8094 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8095 "vhci_uscsi_send_sense: enter: bp: %p pkt: %p scmd: %p", | |
| 8096 (void *)cmdbp, (void *)pkt, (void *)mp_uscmdp)); | |
| 8097 /* set up the packet information and cdb */ | |
| 8098 if ((rqbp = scsi_alloc_consistent_buf(mp_uscmdp->ap, NULL, | |
| 8099 SENSE_LENGTH, B_READ, NULL, NULL)) == NULL) { | |
| 8100 return (-1); | |
| 8101 } | |
| 8102 | |
| 8103 if ((rqpkt = scsi_init_pkt(mp_uscmdp->ap, NULL, rqbp, | |
| 8104 CDB_GROUP0, 1, 0, PKT_CONSISTENT, NULL, NULL)) == NULL) { | |
| 8105 scsi_free_consistent_buf(rqbp); | |
| 8106 return (-1); | |
| 8107 } | |
| 8108 | |
| 8109 (void) scsi_setup_cdb((union scsi_cdb *)(intptr_t)rqpkt->pkt_cdbp, | |
| 8110 SCMD_REQUEST_SENSE, 0, SENSE_LENGTH, 0); | |
| 8111 | |
| 8112 mp_uscmdp->rqbp = rqbp; | |
| 8113 rqbp->b_private = mp_uscmdp; | |
| 8114 rqpkt->pkt_flags |= FLAG_SENSING; | |
| 8115 rqpkt->pkt_time = 60; | |
| 8116 rqpkt->pkt_comp = vhci_uscsi_iodone; | |
| 8117 rqpkt->pkt_private = mp_uscmdp; | |
| 8118 | |
| 8119 /* get her done */ | |
| 8120 switch (scsi_transport(rqpkt)) { | |
| 8121 case TRAN_ACCEPT: | |
| 8122 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
| 8123 "transport accepted.")); | |
| 8124 break; | |
| 8125 case TRAN_BUSY: | |
| 8126 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
| 8127 "transport busy, setting timeout.")); | |
| 8128 vhci_restart_timeid = timeout(vhci_uscsi_restart_sense, rqpkt, | |
| 8129 (drv_usectohz(5 * 1000000))); | |
| 8130 break; | |
| 8131 default: | |
| 8132 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
| 8133 "transport failed")); | |
| 8134 scsi_free_consistent_buf(rqbp); | |
| 8135 scsi_destroy_pkt(rqpkt); | |
| 8136 rval = -1; | |
| 8137 } | |
| 8138 | |
| 8139 return (rval); | |
| 8140 } | |
| 8141 | |
| 8142 /* | |
| 8143 * done routine for the mpapi uscsi command - this is behaving as though | |
| 8144 * FLAG_DIAGNOSE is set meaning there are no retries except for a manual | |
| 8145 * request sense. | |
| 8146 */ | |
| 8147 void | |
| 8148 vhci_uscsi_iodone(struct scsi_pkt *pkt) | |
| 8149 { | |
| 8150 struct buf *bp; | |
| 8151 mp_uscsi_cmd_t *mp_uscmdp; | |
| 8152 struct uscsi_cmd *uscmdp; | |
| 8153 struct scsi_arq_status *arqstat; | |
| 8154 int err; | |
| 8155 | |
| 8156 mp_uscmdp = (mp_uscsi_cmd_t *)pkt->pkt_private; | |
| 8157 uscmdp = mp_uscmdp->uscmdp; | |
| 8158 bp = mp_uscmdp->cmdbp; | |
| 8159 ASSERT(bp != NULL); | |
| 8160 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8161 "vhci_uscsi_iodone: enter: bp: %p pkt: %p scmd: %p", | |
| 8162 (void *)bp, (void *)pkt, (void *)mp_uscmdp)); | |
| 8163 /* Save the status and the residual into the uscsi_cmd struct */ | |
| 8164 uscmdp->uscsi_status = ((*(pkt)->pkt_scbp) & STATUS_MASK); | |
| 8165 uscmdp->uscsi_resid = bp->b_resid; | |
| 8166 | |
| 8167 /* return on a very successful command */ | |
| 8168 if (pkt->pkt_reason == CMD_CMPLT && | |
| 8169 SCBP_C(pkt) == 0 && ((pkt->pkt_flags & FLAG_SENSING) == 0) && | |
| 8170 pkt->pkt_resid == 0) { | |
| 8171 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
| 8172 scsi_destroy_pkt(pkt); | |
| 8173 biodone(bp); | |
| 8174 return; | |
| 8175 } | |
| 8176 VHCI_DEBUG(4, (CE_NOTE, NULL, "iodone: reason=0x%x " | |
| 8177 " pkt_resid=%ld pkt_state: 0x%x b_count: %ld b_resid: %ld", | |
| 8178 pkt->pkt_reason, pkt->pkt_resid, | |
| 8179 pkt->pkt_state, bp->b_bcount, bp->b_resid)); | |
| 8180 | |
| 8181 err = EIO; | |
| 8182 | |
| 8183 arqstat = (struct scsi_arq_status *)(intptr_t)(pkt->pkt_scbp); | |
| 8184 if (pkt->pkt_reason != CMD_CMPLT) { | |
| 8185 /* | |
| 8186 * The command did not complete. | |
| 8187 */ | |
| 8188 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8189 "vhci_uscsi_iodone: command did not complete." | |
| 8190 " reason: %x flag: %x", pkt->pkt_reason, pkt->pkt_flags)); | |
| 8191 if (pkt->pkt_flags & FLAG_SENSING) { | |
| 8192 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
| 8193 } else if (pkt->pkt_reason == CMD_TIMEOUT) { | |
| 8194 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_HARDERR); | |
| 8195 err = ETIMEDOUT; | |
| 8196 } | |
| 8197 } else if (pkt->pkt_state & STATE_ARQ_DONE && mp_uscmdp->arq_enabled) { | |
| 8198 /* | |
| 8199 * The auto-rqsense happened, and the packet has a filled-in | |
| 8200 * scsi_arq_status structure, pointed to by pkt_scbp. | |
| 8201 */ | |
| 8202 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8203 "vhci_uscsi_iodone: received auto-requested sense")); | |
| 8204 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
| 8205 /* get the amount of data to copy into rqbuf */ | |
| 8206 int rqlen = SENSE_LENGTH - arqstat->sts_rqpkt_resid; | |
| 8207 rqlen = min(((int)uscmdp->uscsi_rqlen), rqlen); | |
| 8208 uscmdp->uscsi_rqresid = uscmdp->uscsi_rqlen - rqlen; | |
| 8209 uscmdp->uscsi_rqstatus = | |
| 8210 *((char *)&arqstat->sts_rqpkt_status); | |
| 8211 if (uscmdp->uscsi_rqbuf && uscmdp->uscsi_rqlen && | |
| 8212 rqlen != 0) { | |
| 8213 bcopy(&(arqstat->sts_sensedata), | |
| 8214 uscmdp->uscsi_rqbuf, rqlen); | |
| 8215 } | |
| 8216 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
| 8217 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8218 "vhci_uscsi_iodone: ARQ " | |
| 8219 "uscsi_rqstatus=0x%x uscsi_rqresid=%d rqlen: %d " | |
| 8220 "xfer: %d rqpkt_resid: %d\n", | |
| 8221 uscmdp->uscsi_rqstatus, uscmdp->uscsi_rqresid, | |
| 8222 uscmdp->uscsi_rqlen, rqlen, | |
| 8223 arqstat->sts_rqpkt_resid)); | |
| 8224 } | |
| 8225 } else if (pkt->pkt_flags & FLAG_SENSING) { | |
| 8226 struct buf *rqbp; | |
| 8227 struct scsi_status *rqstatus; | |
| 8228 | |
| 8229 rqstatus = (struct scsi_status *)pkt->pkt_scbp; | |
| 8230 /* a manual request sense was done - get the information */ | |
| 8231 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
| 8232 int rqlen = SENSE_LENGTH - pkt->pkt_resid; | |
| 8233 | |
| 8234 rqbp = mp_uscmdp->rqbp; | |
| 8235 /* get the amount of data to copy into rqbuf */ | |
| 8236 rqlen = min(((int)uscmdp->uscsi_rqlen), rqlen); | |
| 8237 uscmdp->uscsi_rqresid = uscmdp->uscsi_rqlen - rqlen; | |
| 8238 uscmdp->uscsi_rqstatus = *((char *)rqstatus); | |
| 8239 if (uscmdp->uscsi_rqlen && uscmdp->uscsi_rqbuf) { | |
| 8240 bcopy(rqbp->b_un.b_addr, uscmdp->uscsi_rqbuf, | |
| 8241 rqlen); | |
| 8242 } | |
| 8243 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
| 8244 scsi_free_consistent_buf(rqbp); | |
| 8245 } | |
| 8246 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_uscsi_iodone: FLAG_SENSING" | |
| 8247 "uscsi_rqstatus=0x%x uscsi_rqresid=%d\n", | |
| 8248 uscmdp->uscsi_rqstatus, uscmdp->uscsi_rqresid)); | |
| 8249 } else { | |
| 8250 struct scsi_status *status = | |
| 8251 (struct scsi_status *)pkt->pkt_scbp; | |
| 8252 /* | |
| 8253 * Command completed and we're not getting sense. Check for | |
| 8254 * errors and decide what to do next. | |
| 8255 */ | |
| 8256 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8257 "vhci_uscsi_iodone: command appears complete: reason: %x", | |
| 8258 pkt->pkt_reason)); | |
| 8259 if (status->sts_chk) { | |
| 8260 /* need to manually get the request sense */ | |
| 8261 if (vhci_uscsi_send_sense(pkt, mp_uscmdp) == 0) { | |
| 8262 scsi_destroy_pkt(pkt); | |
| 8263 return; | |
| 8264 } | |
| 8265 } else { | |
| 8266 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8267 "vhci_chk_err: appears complete")); | |
| 8268 err = 0; | |
| 8269 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
| 8270 if (pkt->pkt_resid) { | |
| 8271 bp->b_resid += pkt->pkt_resid; | |
| 8272 } | |
| 8273 } | |
| 8274 } | |
| 8275 | |
| 8276 if (err) { | |
| 8277 if (bp->b_resid == 0) | |
| 8278 bp->b_resid = bp->b_bcount; | |
| 8279 bioerror(bp, err); | |
| 8280 bp->b_flags |= B_ERROR; | |
| 8281 } | |
| 8282 | |
| 8283 scsi_destroy_pkt(pkt); | |
| 8284 biodone(bp); | |
| 8285 | |
| 8286 VHCI_DEBUG(4, (CE_WARN, NULL, "vhci_uscsi_iodone: exit")); | |
| 8287 } | |
| 8288 | |
| 8289 /* | |
| 8290 * start routine for the mpapi uscsi command | |
| 8291 */ | |
| 8292 int | |
| 8293 vhci_uscsi_iostart(struct buf *bp) | |
| 8294 { | |
| 8295 struct scsi_pkt *pkt; | |
| 8296 struct uscsi_cmd *uscmdp; | |
| 8297 mp_uscsi_cmd_t *mp_uscmdp; | |
| 8298 int stat_size, rval; | |
| 8299 int retry = 0; | |
| 8300 | |
| 8301 ASSERT(bp->b_private != NULL); | |
| 8302 | |
| 8303 mp_uscmdp = (mp_uscsi_cmd_t *)bp->b_private; | |
| 8304 uscmdp = mp_uscmdp->uscmdp; | |
| 8305 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
| 8306 stat_size = SENSE_LENGTH; | |
| 8307 } else { | |
| 8308 stat_size = 1; | |
| 8309 } | |
| 8310 | |
| 8311 pkt = scsi_init_pkt(mp_uscmdp->ap, NULL, bp, uscmdp->uscsi_cdblen, | |
| 8312 stat_size, 0, 0, SLEEP_FUNC, NULL); | |
| 8313 if (pkt == NULL) { | |
| 8314 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8315 "vhci_uscsi_iostart: rval: EINVAL")); | |
| 8316 bp->b_resid = bp->b_bcount; | |
| 8317 uscmdp->uscsi_resid = bp->b_bcount; | |
| 8318 bioerror(bp, EINVAL); | |
| 8319 biodone(bp); | |
| 8320 return (EINVAL); | |
| 8321 } | |
| 8322 | |
| 8323 pkt->pkt_time = uscmdp->uscsi_timeout; | |
| 8324 bcopy(uscmdp->uscsi_cdb, pkt->pkt_cdbp, (size_t)uscmdp->uscsi_cdblen); | |
| 8325 pkt->pkt_comp = vhci_uscsi_iodone; | |
| 8326 pkt->pkt_private = mp_uscmdp; | |
| 8327 if (uscmdp->uscsi_flags & USCSI_SILENT) | |
| 8328 pkt->pkt_flags |= FLAG_SILENT; | |
| 8329 if (uscmdp->uscsi_flags & USCSI_ISOLATE) | |
| 8330 pkt->pkt_flags |= FLAG_ISOLATE; | |
| 8331 if (uscmdp->uscsi_flags & USCSI_DIAGNOSE) | |
| 8332 pkt->pkt_flags |= FLAG_DIAGNOSE; | |
| 8333 if (uscmdp->uscsi_flags & USCSI_RENEGOT) { | |
| 8334 pkt->pkt_flags |= FLAG_RENEGOTIATE_WIDE_SYNC; | |
| 8335 } | |
| 8336 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8337 "vhci_uscsi_iostart: ap: %p pkt: %p pcdbp: %p uscmdp: %p" | |
| 8338 " ucdbp: %p pcdblen: %d bp: %p count: %ld pip: %p" | |
| 8339 " stat_size: %d", | |
| 8340 (void *)mp_uscmdp->ap, (void *)pkt, (void *)pkt->pkt_cdbp, | |
| 8341 (void *)uscmdp, (void *)uscmdp->uscsi_cdb, pkt->pkt_cdblen, | |
| 8342 (void *)bp, bp->b_bcount, (void *)mp_uscmdp->pip, stat_size)); | |
| 8343 | |
| 8344 while (((rval = scsi_transport(pkt)) == TRAN_BUSY) && | |
| 8345 retry < vhci_uscsi_retry_count) { | |
| 8346 delay(drv_usectohz(vhci_uscsi_delay)); | |
| 8347 retry++; | |
| 8348 } | |
| 8349 if (retry >= vhci_uscsi_retry_count) { | |
| 8350 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8351 "vhci_uscsi_iostart: tran_busy - retry: %d", retry)); | |
| 8352 } | |
| 8353 switch (rval) { | |
| 8354 case TRAN_ACCEPT: | |
| 8355 rval = 0; | |
| 8356 break; | |
| 8357 | |
| 8358 default: | |
| 8359 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8360 "vhci_uscsi_iostart: rval: %d count: %ld res: %ld", | |
| 8361 rval, bp->b_bcount, bp->b_resid)); | |
| 8362 bp->b_resid = bp->b_bcount; | |
| 8363 uscmdp->uscsi_resid = bp->b_bcount; | |
| 8364 bioerror(bp, EIO); | |
| 8365 scsi_destroy_pkt(pkt); | |
| 8366 biodone(bp); | |
| 8367 rval = EIO; | |
| 8368 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
| 8369 break; | |
| 8370 } | |
| 8371 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8372 "vhci_uscsi_iostart: exit: rval: %d", rval)); | |
| 8373 return (rval); | |
| 8374 } |