Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/io/scsi/adapters/scsi_vhci/scsi_vhci.c @ 6962:225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
| author | rralphs |
|---|---|
| date | Wed, 25 Jun 2008 17:28:49 -0700 |
| parents | c5d83acec1bc |
| children | 8e4f1d0e9dd8 |
| 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> | |
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37 #include <sys/scsi/impl/services.h> |
| 4851 | 38 #include <sys/sunmdi.h> |
| 39 #include <sys/mdi_impldefs.h> | |
| 40 #include <sys/scsi/adapters/scsi_vhci.h> | |
| 41 #include <sys/disp.h> | |
| 42 #include <sys/byteorder.h> | |
| 43 | |
| 44 extern uintptr_t scsi_callback_id; | |
| 45 extern ddi_dma_attr_t scsi_alloc_attr; | |
| 46 | |
| 47 #ifdef DEBUG | |
| 48 int vhci_debug = VHCI_DEBUG_DEFAULT_VAL; | |
| 49 #endif | |
| 50 | |
| 51 /* retry for the vhci_do_prout command when a not ready is returned */ | |
| 52 int vhci_prout_not_ready_retry = 180; | |
| 53 | |
| 54 /* | |
| 55 * These values are defined to support the internal retry of | |
| 56 * SCSI packets for better sense code handling. | |
| 57 */ | |
| 58 #define VHCI_CMD_CMPLT 0 | |
| 59 #define VHCI_CMD_RETRY 1 | |
| 60 #define VHCI_CMD_ERROR -1 | |
| 61 | |
| 62 #define PROPFLAGS (DDI_PROP_DONTPASS | DDI_PROP_NOTPROM) | |
| 63 #define VHCI_SCSI_PERR 0x47 | |
| 64 #define VHCI_PGR_ILLEGALOP -2 | |
| 65 #define VHCI_NUM_UPDATE_TASKQ 8 | |
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66 /* changed to 132 to accomodate HDS */ |
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67 #define VHCI_STD_INQ_SIZE 132 |
| 4851 | 68 |
| 69 /* | |
| 70 * Version Macros | |
| 71 */ | |
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72 #define VHCI_NAME_VERSION "SCSI VHCI Driver %I%" |
| 4851 | 73 char vhci_version_name[] = VHCI_NAME_VERSION; |
| 74 | |
| 75 int vhci_first_time = 0; | |
| 76 clock_t vhci_to_ticks = 0; | |
| 77 int vhci_init_wait_timeout = VHCI_INIT_WAIT_TIMEOUT; | |
| 78 kcondvar_t vhci_cv; | |
| 79 kmutex_t vhci_global_mutex; | |
| 80 void *vhci_softstate = NULL; /* for soft state */ | |
| 81 | |
| 82 /* | |
| 83 * Flag to delay the retry of the reserve command | |
| 84 */ | |
| 85 int vhci_reserve_delay = 100000; | |
| 86 static int vhci_path_quiesce_timeout = 60; | |
| 87 static uchar_t zero_key[MHIOC_RESV_KEY_SIZE]; | |
| 88 | |
| 89 /* uscsi delay for a TRAN_BUSY */ | |
| 90 static int vhci_uscsi_delay = 100000; | |
| 91 static int vhci_uscsi_retry_count = 180; | |
| 92 /* uscsi_restart_sense timeout id in case it needs to get canceled */ | |
| 93 static timeout_id_t vhci_restart_timeid = 0; | |
| 94 | |
| 95 /* | |
| 96 * Bidirectional map of 'target-port' to port id <pid> for support of | |
| 97 * iostat(1M) '-Xx' and '-Yx' output. | |
| 98 */ | |
| 99 static kmutex_t vhci_targetmap_mutex; | |
| 100 static uint_t vhci_targetmap_pid = 1; | |
| 101 static mod_hash_t *vhci_targetmap_bypid; /* <pid> -> 'target-port' */ | |
| 102 static mod_hash_t *vhci_targetmap_byport; /* 'target-port' -> <pid> */ | |
| 103 | |
| 104 /* | |
| 105 * functions exported by scsi_vhci struct cb_ops | |
| 106 */ | |
| 107 static int vhci_open(dev_t *, int, int, cred_t *); | |
| 108 static int vhci_close(dev_t, int, int, cred_t *); | |
| 109 static int vhci_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 110 | |
| 111 /* | |
| 112 * functions exported by scsi_vhci struct dev_ops | |
| 113 */ | |
| 114 static int vhci_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **); | |
| 115 static int vhci_attach(dev_info_t *, ddi_attach_cmd_t); | |
| 116 static int vhci_detach(dev_info_t *, ddi_detach_cmd_t); | |
| 117 | |
| 118 /* | |
| 119 * functions exported by scsi_vhci scsi_hba_tran_t transport table | |
| 120 */ | |
| 121 static int vhci_scsi_tgt_init(dev_info_t *, dev_info_t *, | |
| 122 scsi_hba_tran_t *, struct scsi_device *); | |
| 123 static void vhci_scsi_tgt_free(dev_info_t *, dev_info_t *, scsi_hba_tran_t *, | |
| 124 struct scsi_device *); | |
| 125 static int vhci_pgr_register_start(scsi_vhci_lun_t *, struct scsi_pkt *); | |
| 126 static int vhci_scsi_start(struct scsi_address *, struct scsi_pkt *); | |
| 127 static int vhci_scsi_abort(struct scsi_address *, struct scsi_pkt *); | |
| 128 static int vhci_scsi_reset(struct scsi_address *, int); | |
| 129 static int vhci_scsi_reset_target(struct scsi_address *, int level, | |
| 130 uint8_t select_path); | |
| 131 static int vhci_scsi_reset_bus(struct scsi_address *); | |
| 132 static int vhci_scsi_getcap(struct scsi_address *, char *, int); | |
| 133 static int vhci_scsi_setcap(struct scsi_address *, char *, int, int); | |
| 134 static int vhci_commoncap(struct scsi_address *, char *, int, int, int); | |
| 135 static int vhci_pHCI_cap(struct scsi_address *ap, char *cap, int val, int whom, | |
| 136 mdi_pathinfo_t *pip); | |
| 137 static struct scsi_pkt *vhci_scsi_init_pkt(struct scsi_address *, | |
| 138 struct scsi_pkt *, struct buf *, int, int, int, int, int (*)(), caddr_t); | |
| 139 static void vhci_scsi_destroy_pkt(struct scsi_address *, struct scsi_pkt *); | |
| 140 static void vhci_scsi_dmafree(struct scsi_address *, struct scsi_pkt *); | |
| 141 static void vhci_scsi_sync_pkt(struct scsi_address *, struct scsi_pkt *); | |
| 142 static int vhci_scsi_reset_notify(struct scsi_address *, int, void (*)(caddr_t), | |
| 143 caddr_t); | |
| 144 static int vhci_scsi_get_bus_addr(struct scsi_device *, char *, int); | |
| 145 static int vhci_scsi_get_name(struct scsi_device *, char *, int); | |
| 146 static int vhci_scsi_bus_power(dev_info_t *, void *, pm_bus_power_op_t, | |
| 147 void *, void *); | |
| 148 static int vhci_scsi_bus_config(dev_info_t *, uint_t, ddi_bus_config_op_t, | |
| 149 void *, dev_info_t **); | |
| 150 | |
| 151 /* | |
| 152 * functions registered with the mpxio framework via mdi_vhci_ops_t | |
| 153 */ | |
| 154 static int vhci_pathinfo_init(dev_info_t *, mdi_pathinfo_t *, int); | |
| 155 static int vhci_pathinfo_uninit(dev_info_t *, mdi_pathinfo_t *, int); | |
| 156 static int vhci_pathinfo_state_change(dev_info_t *, mdi_pathinfo_t *, | |
| 157 mdi_pathinfo_state_t, uint32_t, int); | |
| 158 static int vhci_pathinfo_online(dev_info_t *, mdi_pathinfo_t *, int); | |
| 159 static int vhci_pathinfo_offline(dev_info_t *, mdi_pathinfo_t *, int); | |
| 160 static int vhci_failover(dev_info_t *, dev_info_t *, int); | |
| 161 static void vhci_client_attached(dev_info_t *); | |
| 162 | |
| 163 static int vhci_ctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 164 static int vhci_devctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 165 static int vhci_ioc_get_phci_path(sv_iocdata_t *, caddr_t, int, caddr_t); | |
| 166 static int vhci_ioc_get_client_path(sv_iocdata_t *, caddr_t, int, caddr_t); | |
| 167 static int vhci_ioc_get_paddr(sv_iocdata_t *, caddr_t, int, caddr_t); | |
| 168 static int vhci_ioc_send_client_path(caddr_t, sv_iocdata_t *, int, caddr_t); | |
| 169 static void vhci_ioc_devi_to_path(dev_info_t *, caddr_t); | |
| 170 static int vhci_get_phci_path_list(dev_info_t *, sv_path_info_t *, uint_t); | |
| 171 static int vhci_get_client_path_list(dev_info_t *, sv_path_info_t *, uint_t); | |
| 172 static int vhci_get_iocdata(const void *, sv_iocdata_t *, int, caddr_t); | |
| 173 static int vhci_get_iocswitchdata(const void *, sv_switch_to_cntlr_iocdata_t *, | |
| 174 int, caddr_t); | |
| 175 static int vhci_ioc_alloc_pathinfo(sv_path_info_t **, sv_path_info_t **, | |
| 176 uint_t, sv_iocdata_t *, int, caddr_t); | |
| 177 static void vhci_ioc_free_pathinfo(sv_path_info_t *, sv_path_info_t *, uint_t); | |
| 178 static int vhci_ioc_send_pathinfo(sv_path_info_t *, sv_path_info_t *, uint_t, | |
| 179 sv_iocdata_t *, int, caddr_t); | |
| 180 static int vhci_handle_ext_fo(struct scsi_pkt *, int); | |
| 181 static int vhci_efo_watch_cb(caddr_t, struct scsi_watch_result *); | |
| 182 static int vhci_quiesce_lun(struct scsi_vhci_lun *); | |
| 183 static int vhci_pgr_validate_and_register(scsi_vhci_priv_t *); | |
| 184 static void vhci_dispatch_scsi_start(void *); | |
| 185 static void vhci_efo_done(void *); | |
| 186 static void vhci_initiate_auto_failback(void *); | |
| 187 static void vhci_update_pHCI_pkt(struct vhci_pkt *, struct scsi_pkt *); | |
| 188 static int vhci_update_pathinfo(struct scsi_device *, mdi_pathinfo_t *, | |
| 189 struct scsi_failover_ops *, scsi_vhci_lun_t *, struct scsi_vhci *); | |
| 190 static void vhci_kstat_create_pathinfo(mdi_pathinfo_t *); | |
| 191 static int vhci_quiesce_paths(dev_info_t *, dev_info_t *, | |
| 192 scsi_vhci_lun_t *, char *, char *); | |
| 193 | |
| 194 static char *vhci_devnm_to_guid(char *); | |
| 195 static int vhci_bind_transport(struct scsi_address *, struct vhci_pkt *, | |
| 196 int, int (*func)(caddr_t)); | |
| 197 static void vhci_intr(struct scsi_pkt *); | |
| 198 static int vhci_do_prout(scsi_vhci_priv_t *); | |
| 199 static void vhci_run_cmd(void *); | |
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200 static int vhci_do_prin(struct vhci_pkt *); |
| 4851 | 201 static struct scsi_pkt *vhci_create_retry_pkt(struct vhci_pkt *); |
| 202 static struct vhci_pkt *vhci_sync_retry_pkt(struct vhci_pkt *); | |
| 203 static struct scsi_vhci_lun *vhci_lun_lookup(dev_info_t *); | |
| 204 static struct scsi_vhci_lun *vhci_lun_lookup_alloc(dev_info_t *, char *, int *); | |
| 205 static void vhci_lun_free(dev_info_t *); | |
| 206 static int vhci_recovery_reset(scsi_vhci_lun_t *, struct scsi_address *, | |
| 207 uint8_t, uint8_t); | |
| 208 void vhci_update_pathstates(void *); | |
| 209 | |
| 210 #ifdef DEBUG | |
| 211 static void vhci_print_prin_keys(vhci_prin_readkeys_t *, int); | |
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212 static void vhci_print_cdb(dev_info_t *dip, uint_t level, |
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213 char *title, uchar_t *cdb); |
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214 static void vhci_clean_print(dev_info_t *dev, uint_t level, |
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215 char *title, uchar_t *data, int len); |
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216 #endif |
| 4851 | 217 static void vhci_print_prout_keys(scsi_vhci_lun_t *, char *); |
| 218 static void vhci_uscsi_iodone(struct scsi_pkt *pkt); | |
| 219 | |
| 220 /* | |
| 221 * MP-API related functions | |
| 222 */ | |
| 223 extern int vhci_mpapi_init(struct scsi_vhci *); | |
| 224 extern void vhci_mpapi_add_dev_prod(struct scsi_vhci *, char *); | |
| 225 extern int vhci_mpapi_ctl(dev_t, int, intptr_t, int, cred_t *, int *); | |
| 226 extern void vhci_update_mpapi_data(struct scsi_vhci *, | |
| 227 scsi_vhci_lun_t *, mdi_pathinfo_t *); | |
| 228 extern void* vhci_get_mpapi_item(struct scsi_vhci *, mpapi_list_header_t *, | |
| 229 uint8_t, void*); | |
| 230 extern void vhci_mpapi_set_path_state(dev_info_t *, mdi_pathinfo_t *, int); | |
| 231 extern int vhci_mpapi_update_tpg_acc_state_for_lu(struct scsi_vhci *, | |
| 232 scsi_vhci_lun_t *); | |
| 233 | |
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234 #define VHCI_DMA_MAX_XFER_CAP INT_MAX |
| 4851 | 235 |
| 236 #define VHCI_MAX_PGR_RETRIES 3 | |
| 237 | |
| 238 /* | |
| 239 * Macros for the device-type mpxio options | |
| 240 */ | |
| 241 #define LOAD_BALANCE_OPTIONS "load-balance-options" | |
| 242 #define LOGICAL_BLOCK_REGION_SIZE "region-size" | |
| 243 #define MPXIO_OPTIONS_LIST "device-type-mpxio-options-list" | |
| 244 #define DEVICE_TYPE_STR "device-type" | |
| 245 #define isdigit(ch) ((ch) >= '0' && (ch) <= '9') | |
| 246 | |
| 247 static struct cb_ops vhci_cb_ops = { | |
| 248 vhci_open, /* open */ | |
| 249 vhci_close, /* close */ | |
| 250 nodev, /* strategy */ | |
| 251 nodev, /* print */ | |
| 252 nodev, /* dump */ | |
| 253 nodev, /* read */ | |
| 254 nodev, /* write */ | |
| 255 vhci_ioctl, /* ioctl */ | |
| 256 nodev, /* devmap */ | |
| 257 nodev, /* mmap */ | |
| 258 nodev, /* segmap */ | |
| 259 nochpoll, /* chpoll */ | |
| 260 ddi_prop_op, /* cb_prop_op */ | |
| 261 0, /* streamtab */ | |
| 262 D_NEW | D_MP, /* cb_flag */ | |
| 263 CB_REV, /* rev */ | |
| 264 nodev, /* aread */ | |
| 265 nodev /* awrite */ | |
| 266 }; | |
| 267 | |
| 268 static struct dev_ops vhci_ops = { | |
| 269 DEVO_REV, | |
| 270 0, | |
| 271 vhci_getinfo, | |
| 272 nulldev, /* identify */ | |
| 273 nulldev, /* probe */ | |
| 274 vhci_attach, /* attach and detach are mandatory */ | |
| 275 vhci_detach, | |
| 276 nodev, /* reset */ | |
| 277 &vhci_cb_ops, /* cb_ops */ | |
| 278 NULL, /* bus_ops */ | |
| 279 NULL, /* power */ | |
| 280 }; | |
| 281 | |
| 282 extern struct mod_ops mod_driverops; | |
| 283 | |
| 284 static struct modldrv modldrv = { | |
| 285 &mod_driverops, | |
| 286 vhci_version_name, /* module name */ | |
| 287 &vhci_ops | |
| 288 }; | |
| 289 | |
| 290 static struct modlinkage modlinkage = { | |
| 291 MODREV_1, | |
| 292 &modldrv, | |
| 293 NULL | |
| 294 }; | |
| 295 | |
| 296 static mdi_vhci_ops_t vhci_opinfo = { | |
| 297 MDI_VHCI_OPS_REV, | |
| 298 vhci_pathinfo_init, /* Pathinfo node init callback */ | |
| 299 vhci_pathinfo_uninit, /* Pathinfo uninit callback */ | |
| 300 vhci_pathinfo_state_change, /* Pathinfo node state change */ | |
| 301 vhci_failover, /* failover callback */ | |
| 302 vhci_client_attached /* client attached callback */ | |
| 303 }; | |
| 304 | |
| 305 /* | |
| 306 * The scsi_failover table defines an ordered set of 'fops' modules supported | |
| 307 * by scsi_vhci. Currently, initialize this table from the 'ddi-forceload' | |
| 308 * property specified in scsi_vhci.conf. | |
| 309 */ | |
| 310 struct scsi_failover { | |
| 311 ddi_modhandle_t sf_mod; | |
| 312 struct scsi_failover_ops *sf_sfo; | |
| 313 } *scsi_failover_table; | |
| 314 uint_t scsi_nfailover; | |
| 315 | |
| 316 int | |
| 317 _init(void) | |
| 318 { | |
| 319 int rval; | |
| 320 | |
| 321 /* | |
| 322 * Allocate soft state and prepare to do ddi_soft_state_zalloc() | |
| 323 * before registering with the transport first. | |
| 324 */ | |
| 325 if ((rval = ddi_soft_state_init(&vhci_softstate, | |
| 326 sizeof (struct scsi_vhci), 1)) != 0) { | |
| 327 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 328 "!_init:soft state init failed\n")); | |
| 329 return (rval); | |
| 330 } | |
| 331 | |
| 332 if ((rval = scsi_hba_init(&modlinkage)) != 0) { | |
| 333 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 334 "!_init: scsi hba init failed\n")); | |
| 335 ddi_soft_state_fini(&vhci_softstate); | |
| 336 return (rval); | |
| 337 } | |
| 338 | |
| 339 mutex_init(&vhci_global_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 340 cv_init(&vhci_cv, NULL, CV_DRIVER, NULL); | |
| 341 | |
| 342 mutex_init(&vhci_targetmap_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 343 vhci_targetmap_byport = mod_hash_create_strhash( | |
| 344 "vhci_targetmap_byport", 256, mod_hash_null_valdtor); | |
| 345 vhci_targetmap_bypid = mod_hash_create_idhash( | |
| 346 "vhci_targetmap_bypid", 256, mod_hash_null_valdtor); | |
| 347 | |
| 348 if ((rval = mod_install(&modlinkage)) != 0) { | |
| 349 VHCI_DEBUG(1, (CE_NOTE, NULL, "!_init: mod_install failed\n")); | |
| 350 if (vhci_targetmap_bypid) | |
| 351 mod_hash_destroy_idhash(vhci_targetmap_bypid); | |
| 352 if (vhci_targetmap_byport) | |
| 353 mod_hash_destroy_strhash(vhci_targetmap_byport); | |
| 354 mutex_destroy(&vhci_targetmap_mutex); | |
| 355 cv_destroy(&vhci_cv); | |
| 356 mutex_destroy(&vhci_global_mutex); | |
| 357 scsi_hba_fini(&modlinkage); | |
| 358 ddi_soft_state_fini(&vhci_softstate); | |
| 359 } | |
| 360 return (rval); | |
| 361 } | |
| 362 | |
| 363 | |
| 364 /* | |
| 365 * the system is done with us as a driver, so clean up | |
| 366 */ | |
| 367 int | |
| 368 _fini(void) | |
| 369 { | |
| 370 int rval; | |
| 371 | |
| 372 /* | |
| 373 * don't start cleaning up until we know that the module remove | |
| 374 * has worked -- if this works, then we know that each instance | |
| 375 * has successfully been DDI_DETACHed | |
| 376 */ | |
| 377 if ((rval = mod_remove(&modlinkage)) != 0) { | |
| 378 VHCI_DEBUG(4, (CE_NOTE, NULL, "!_fini: mod_remove failed\n")); | |
| 379 return (rval); | |
| 380 } | |
| 381 | |
| 382 if (vhci_targetmap_bypid) | |
| 383 mod_hash_destroy_idhash(vhci_targetmap_bypid); | |
| 384 if (vhci_targetmap_byport) | |
| 385 mod_hash_destroy_strhash(vhci_targetmap_byport); | |
| 386 mutex_destroy(&vhci_targetmap_mutex); | |
| 387 cv_destroy(&vhci_cv); | |
| 388 mutex_destroy(&vhci_global_mutex); | |
| 389 scsi_hba_fini(&modlinkage); | |
| 390 ddi_soft_state_fini(&vhci_softstate); | |
| 391 | |
| 392 return (rval); | |
| 393 } | |
| 394 | |
| 395 int | |
| 396 _info(struct modinfo *modinfop) | |
| 397 { | |
| 398 return (mod_info(&modlinkage, modinfop)); | |
| 399 } | |
| 400 | |
| 401 /* | |
| 402 * Lookup scsi_failover by "short name" of failover module. | |
| 403 */ | |
| 404 struct scsi_failover_ops * | |
| 405 vhci_failover_ops_by_name(char *name) | |
| 406 { | |
| 407 struct scsi_failover *sf; | |
| 408 | |
| 409 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 410 if (sf->sf_sfo == NULL) | |
| 411 continue; | |
| 412 if (strcmp(sf->sf_sfo->sfo_name, name) == 0) | |
| 413 return (sf->sf_sfo); | |
| 414 } | |
| 415 return (NULL); | |
| 416 } | |
| 417 | |
| 418 /* | |
| 419 * Load all scsi_failover_ops 'fops' modules. | |
| 420 */ | |
| 421 static void | |
| 422 vhci_failover_modopen(struct scsi_vhci *vhci) | |
| 423 { | |
| 424 char **module; | |
| 425 int i; | |
| 426 struct scsi_failover *sf; | |
| 427 char **dt; | |
| 428 int e; | |
| 429 | |
| 430 if (scsi_failover_table) | |
| 431 return; | |
| 432 | |
| 433 /* Get the list of modules from scsi_vhci.conf */ | |
| 434 if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, | |
| 435 vhci->vhci_dip, DDI_PROP_DONTPASS, "ddi-forceload", | |
| 436 &module, &scsi_nfailover) != DDI_PROP_SUCCESS) { | |
| 437 cmn_err(CE_WARN, "scsi_vhci: " | |
| 438 "scsi_vhci.conf is missing 'ddi-forceload'"); | |
| 439 return; | |
| 440 } | |
| 441 if (scsi_nfailover == 0) { | |
| 442 cmn_err(CE_WARN, "scsi_vhci: " | |
| 443 "scsi_vhci.conf has empty 'ddi-forceload'"); | |
|
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444 ddi_prop_free(module); |
| 4851 | 445 return; |
| 446 } | |
| 447 | |
| 448 /* allocate failover table based on number of modules */ | |
| 449 scsi_failover_table = (struct scsi_failover *) | |
| 450 kmem_zalloc(sizeof (struct scsi_failover) * (scsi_nfailover + 1), | |
| 451 KM_SLEEP); | |
| 452 | |
| 453 /* loop over modules specified in scsi_vhci.conf and open each module */ | |
| 454 for (i = 0, sf = scsi_failover_table; i < scsi_nfailover; i++) { | |
| 455 if (module[i] == NULL) | |
| 456 continue; | |
| 457 | |
| 458 sf->sf_mod = ddi_modopen(module[i], KRTLD_MODE_FIRST, &e); | |
| 459 if (sf->sf_mod == NULL) { | |
| 460 /* | |
| 461 * A module returns EEXIST if other software is | |
| 462 * supporting the intended function: for example | |
| 463 * the scsi_vhci_f_sum_emc module returns EEXIST | |
| 464 * from _init if EMC powerpath software is installed. | |
| 465 */ | |
| 466 if (e != EEXIST) | |
| 467 cmn_err(CE_WARN, "scsi_vhci: unable to open " | |
| 468 "module '%s', error %d", module[i], e); | |
| 469 continue; | |
| 470 } | |
| 471 sf->sf_sfo = ddi_modsym(sf->sf_mod, | |
| 472 "scsi_vhci_failover_ops", &e); | |
| 473 if (sf->sf_sfo == NULL) { | |
| 474 cmn_err(CE_WARN, "scsi_vhci: " | |
| 475 "unable to import 'scsi_failover_ops' from '%s', " | |
| 476 "error %d", module[i], e); | |
| 477 (void) ddi_modclose(sf->sf_mod); | |
| 478 sf->sf_mod = NULL; | |
| 479 continue; | |
| 480 } | |
| 481 | |
| 482 /* register vid/pid of devices supported with mpapi */ | |
| 483 for (dt = sf->sf_sfo->sfo_devices; *dt; dt++) | |
| 484 vhci_mpapi_add_dev_prod(vhci, *dt); | |
| 485 sf++; | |
| 486 } | |
| 487 | |
| 488 /* verify that at least the "well-known" modules were there */ | |
| 489 if (vhci_failover_ops_by_name(SFO_NAME_SYM) == NULL) | |
| 490 cmn_err(CE_WARN, "scsi_vhci: well-known module \"" | |
| 491 SFO_NAME_SYM "\" not defined in scsi_vhci.conf's " | |
| 492 "'ddi-forceload'"); | |
| 493 if (vhci_failover_ops_by_name(SFO_NAME_TPGS) == NULL) | |
| 494 cmn_err(CE_WARN, "scsi_vhci: well-known module \"" | |
| 495 SFO_NAME_TPGS "\" not defined in scsi_vhci.conf's " | |
| 496 "'ddi-forceload'"); | |
| 497 | |
| 498 /* call sfo_init for modules that need it */ | |
| 499 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 500 if (sf->sf_sfo && sf->sf_sfo->sfo_init) | |
|
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501 sf->sf_sfo->sfo_init(); |
| 4851 | 502 } |
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503 |
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504 ddi_prop_free(module); |
| 4851 | 505 } |
| 506 | |
| 507 /* | |
| 508 * unload all loaded scsi_failover_ops modules | |
| 509 */ | |
| 510 static void | |
| 511 vhci_failover_modclose() | |
| 512 { | |
| 513 struct scsi_failover *sf; | |
| 514 | |
| 515 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 516 if ((sf->sf_mod == NULL) || (sf->sf_sfo == NULL)) | |
| 517 continue; | |
| 518 (void) ddi_modclose(sf->sf_mod); | |
| 519 sf->sf_mod = NULL; | |
| 520 sf->sf_sfo = NULL; | |
| 521 } | |
| 522 | |
| 523 if (scsi_failover_table && scsi_nfailover) | |
| 524 kmem_free(scsi_failover_table, | |
| 525 sizeof (struct scsi_failover) * (scsi_nfailover + 1)); | |
| 526 scsi_failover_table = NULL; | |
| 527 scsi_nfailover = 0; | |
| 528 } | |
| 529 | |
| 530 /* ARGSUSED */ | |
| 531 static int | |
| 532 vhci_open(dev_t *devp, int flag, int otype, cred_t *credp) | |
| 533 { | |
| 534 struct scsi_vhci *vhci; | |
| 535 | |
| 536 if (otype != OTYP_CHR) { | |
| 537 return (EINVAL); | |
| 538 } | |
| 539 | |
| 540 vhci = ddi_get_soft_state(vhci_softstate, MINOR2INST(getminor(*devp))); | |
| 541 if (vhci == NULL) { | |
| 542 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_open: failed ENXIO\n")); | |
| 543 return (ENXIO); | |
| 544 } | |
| 545 | |
| 546 mutex_enter(&vhci->vhci_mutex); | |
| 547 if ((flag & FEXCL) && (vhci->vhci_state & VHCI_STATE_OPEN)) { | |
| 548 mutex_exit(&vhci->vhci_mutex); | |
| 549 vhci_log(CE_NOTE, vhci->vhci_dip, | |
| 550 "!vhci%d: Already open\n", getminor(*devp)); | |
| 551 return (EBUSY); | |
| 552 } | |
| 553 | |
| 554 vhci->vhci_state |= VHCI_STATE_OPEN; | |
| 555 mutex_exit(&vhci->vhci_mutex); | |
| 556 return (0); | |
| 557 } | |
| 558 | |
| 559 | |
| 560 /* ARGSUSED */ | |
| 561 static int | |
| 562 vhci_close(dev_t dev, int flag, int otype, cred_t *credp) | |
| 563 { | |
| 564 struct scsi_vhci *vhci; | |
| 565 | |
| 566 if (otype != OTYP_CHR) { | |
| 567 return (EINVAL); | |
| 568 } | |
| 569 | |
| 570 vhci = ddi_get_soft_state(vhci_softstate, MINOR2INST(getminor(dev))); | |
| 571 if (vhci == NULL) { | |
| 572 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_close: failed ENXIO\n")); | |
| 573 return (ENXIO); | |
| 574 } | |
| 575 | |
| 576 mutex_enter(&vhci->vhci_mutex); | |
| 577 vhci->vhci_state &= ~VHCI_STATE_OPEN; | |
| 578 mutex_exit(&vhci->vhci_mutex); | |
| 579 | |
| 580 return (0); | |
| 581 } | |
| 582 | |
| 583 /* ARGSUSED */ | |
| 584 static int | |
| 585 vhci_ioctl(dev_t dev, int cmd, intptr_t data, int mode, | |
| 586 cred_t *credp, int *rval) | |
| 587 { | |
| 588 if (IS_DEVCTL(cmd)) { | |
| 589 return (vhci_devctl(dev, cmd, data, mode, credp, rval)); | |
| 590 } else if (cmd == MP_CMD) { | |
| 591 return (vhci_mpapi_ctl(dev, cmd, data, mode, credp, rval)); | |
| 592 } else { | |
| 593 return (vhci_ctl(dev, cmd, data, mode, credp, rval)); | |
| 594 } | |
| 595 } | |
| 596 | |
| 597 /* | |
| 598 * attach the module | |
| 599 */ | |
| 600 static int | |
| 601 vhci_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) | |
| 602 { | |
| 603 int rval = DDI_FAILURE; | |
| 604 int scsi_hba_attached = 0; | |
| 605 int vhci_attached = 0; | |
| 606 int mutex_initted = 0; | |
| 607 int instance; | |
| 608 struct scsi_vhci *vhci; | |
| 609 scsi_hba_tran_t *tran; | |
| 610 char cache_name_buf[64]; | |
| 611 char *data; | |
| 612 | |
| 613 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_attach: cmd=0x%x\n", cmd)); | |
| 614 | |
| 615 instance = ddi_get_instance(dip); | |
| 616 | |
| 617 switch (cmd) { | |
| 618 case DDI_ATTACH: | |
| 619 break; | |
| 620 | |
| 621 case DDI_RESUME: | |
| 622 case DDI_PM_RESUME: | |
| 623 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_attach: resume not yet" | |
| 624 "implemented\n")); | |
| 625 return (rval); | |
| 626 | |
| 627 default: | |
| 628 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 629 "!vhci_attach: unknown ddi command\n")); | |
| 630 return (rval); | |
| 631 } | |
| 632 | |
| 633 /* | |
| 634 * Allocate vhci data structure. | |
| 635 */ | |
| 636 if (ddi_soft_state_zalloc(vhci_softstate, instance) != DDI_SUCCESS) { | |
| 637 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 638 "soft state alloc failed\n")); | |
| 639 return (DDI_FAILURE); | |
| 640 } | |
| 641 | |
| 642 if ((vhci = ddi_get_soft_state(vhci_softstate, instance)) == NULL) { | |
| 643 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 644 "bad soft state\n")); | |
| 645 ddi_soft_state_free(vhci_softstate, instance); | |
| 646 return (DDI_FAILURE); | |
| 647 } | |
| 648 | |
| 649 /* Allocate packet cache */ | |
| 650 (void) snprintf(cache_name_buf, sizeof (cache_name_buf), | |
| 651 "vhci%d_cache", instance); | |
| 652 | |
| 653 mutex_init(&vhci->vhci_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 654 mutex_initted++; | |
| 655 | |
| 656 /* | |
| 657 * Allocate a transport structure | |
| 658 */ | |
| 659 tran = scsi_hba_tran_alloc(dip, SCSI_HBA_CANSLEEP); | |
| 660 ASSERT(tran != NULL); | |
| 661 | |
| 662 vhci->vhci_tran = tran; | |
| 663 vhci->vhci_dip = dip; | |
| 664 vhci->vhci_instance = instance; | |
| 665 | |
| 666 tran->tran_hba_private = vhci; | |
| 667 tran->tran_tgt_private = NULL; | |
| 668 tran->tran_tgt_init = vhci_scsi_tgt_init; | |
| 669 tran->tran_tgt_probe = NULL; | |
| 670 tran->tran_tgt_free = vhci_scsi_tgt_free; | |
| 671 | |
| 672 tran->tran_start = vhci_scsi_start; | |
| 673 tran->tran_abort = vhci_scsi_abort; | |
| 674 tran->tran_reset = vhci_scsi_reset; | |
| 675 tran->tran_getcap = vhci_scsi_getcap; | |
| 676 tran->tran_setcap = vhci_scsi_setcap; | |
| 677 tran->tran_init_pkt = vhci_scsi_init_pkt; | |
| 678 tran->tran_destroy_pkt = vhci_scsi_destroy_pkt; | |
| 679 tran->tran_dmafree = vhci_scsi_dmafree; | |
| 680 tran->tran_sync_pkt = vhci_scsi_sync_pkt; | |
| 681 tran->tran_reset_notify = vhci_scsi_reset_notify; | |
| 682 | |
| 683 tran->tran_get_bus_addr = vhci_scsi_get_bus_addr; | |
| 684 tran->tran_get_name = vhci_scsi_get_name; | |
| 685 tran->tran_bus_reset = NULL; | |
| 686 tran->tran_quiesce = NULL; | |
| 687 tran->tran_unquiesce = NULL; | |
| 688 | |
| 689 /* | |
| 690 * register event notification routines with scsa | |
| 691 */ | |
| 692 tran->tran_get_eventcookie = NULL; | |
| 693 tran->tran_add_eventcall = NULL; | |
| 694 tran->tran_remove_eventcall = NULL; | |
| 695 tran->tran_post_event = NULL; | |
| 696 | |
| 697 tran->tran_bus_power = vhci_scsi_bus_power; | |
| 698 | |
| 699 tran->tran_bus_config = vhci_scsi_bus_config; | |
| 700 | |
| 701 /* | |
| 702 * Attach this instance with the mpxio framework | |
| 703 */ | |
| 704 if (mdi_vhci_register(MDI_HCI_CLASS_SCSI, dip, &vhci_opinfo, 0) | |
| 705 != MDI_SUCCESS) { | |
| 706 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 707 "mdi_vhci_register failed\n")); | |
| 708 goto attach_fail; | |
| 709 } | |
| 710 vhci_attached++; | |
| 711 | |
| 712 /* | |
| 713 * Attach this instance of the hba. | |
| 714 * | |
| 715 * Regarding dma attributes: Since scsi_vhci is a virtual scsi HBA | |
| 716 * driver, it has nothing to do with DMA. However, when calling | |
| 717 * scsi_hba_attach_setup() we need to pass something valid in the | |
| 718 * dma attributes parameter. So we just use scsi_alloc_attr. | |
| 719 * SCSA itself seems to care only for dma_attr_minxfer and | |
| 720 * dma_attr_burstsizes fields of dma attributes structure. | |
| 721 * It expects those fileds to be non-zero. | |
| 722 */ | |
| 723 if (scsi_hba_attach_setup(dip, &scsi_alloc_attr, tran, | |
| 724 SCSI_HBA_TRAN_CLONE) != DDI_SUCCESS) { | |
| 725 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 726 "hba attach failed\n")); | |
| 727 goto attach_fail; | |
| 728 } | |
| 729 scsi_hba_attached++; | |
| 730 | |
| 731 if (ddi_create_minor_node(dip, "devctl", S_IFCHR, | |
| 732 INST2DEVCTL(instance), DDI_NT_SCSI_NEXUS, 0) != DDI_SUCCESS) { | |
| 733 VHCI_DEBUG(1, (CE_NOTE, dip, "!vhci_attach:" | |
| 734 " ddi_create_minor_node failed\n")); | |
| 735 goto attach_fail; | |
| 736 } | |
| 737 | |
| 738 /* | |
| 739 * Set pm-want-child-notification property for | |
| 740 * power management of the phci and client | |
| 741 */ | |
| 742 if (ddi_prop_create(DDI_DEV_T_NONE, dip, DDI_PROP_CANSLEEP, | |
| 743 "pm-want-child-notification?", NULL, NULL) != DDI_PROP_SUCCESS) { | |
| 744 cmn_err(CE_WARN, | |
| 745 "%s%d fail to create pm-want-child-notification? prop", | |
| 746 ddi_driver_name(dip), ddi_get_instance(dip)); | |
| 747 goto attach_fail; | |
| 748 } | |
| 749 | |
| 750 vhci->vhci_taskq = taskq_create("vhci_taskq", 1, MINCLSYSPRI, 1, 4, 0); | |
| 751 vhci->vhci_update_pathstates_taskq = | |
| 752 taskq_create("vhci_update_pathstates", VHCI_NUM_UPDATE_TASKQ, | |
| 753 MINCLSYSPRI, 1, 4, 0); | |
| 754 ASSERT(vhci->vhci_taskq); | |
| 755 ASSERT(vhci->vhci_update_pathstates_taskq); | |
| 756 | |
| 757 /* | |
| 758 * Set appropriate configuration flags based on options set in | |
| 759 * conf file. | |
| 760 */ | |
| 761 vhci->vhci_conf_flags = 0; | |
| 762 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, PROPFLAGS, | |
| 763 "auto-failback", &data) == DDI_SUCCESS) { | |
| 764 if (strcmp(data, "enable") == 0) | |
| 765 vhci->vhci_conf_flags |= VHCI_CONF_FLAGS_AUTO_FAILBACK; | |
| 766 ddi_prop_free(data); | |
| 767 } | |
| 768 | |
| 769 if (!(vhci->vhci_conf_flags & VHCI_CONF_FLAGS_AUTO_FAILBACK)) | |
| 770 vhci_log(CE_NOTE, dip, "!Auto-failback capability " | |
| 771 "disabled through scsi_vhci.conf file."); | |
| 772 | |
| 773 /* | |
| 774 * Allocate an mpapi private structure | |
| 775 */ | |
| 776 vhci->mp_priv = kmem_zalloc(sizeof (mpapi_priv_t), KM_SLEEP); | |
| 777 if (vhci_mpapi_init(vhci) != 0) { | |
| 778 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_attach: " | |
| 779 "vhci_mpapi_init() failed")); | |
| 780 } | |
| 781 | |
| 782 vhci_failover_modopen(vhci); /* load failover modules */ | |
| 783 | |
| 784 ddi_report_dev(dip); | |
| 785 return (DDI_SUCCESS); | |
| 786 | |
| 787 attach_fail: | |
| 788 if (vhci_attached) | |
| 789 (void) mdi_vhci_unregister(dip, 0); | |
| 790 | |
| 791 if (scsi_hba_attached) | |
| 792 (void) scsi_hba_detach(dip); | |
| 793 | |
| 794 if (vhci->vhci_tran) | |
| 795 scsi_hba_tran_free(vhci->vhci_tran); | |
| 796 | |
| 797 if (mutex_initted) { | |
| 798 mutex_destroy(&vhci->vhci_mutex); | |
| 799 } | |
| 800 | |
| 801 ddi_soft_state_free(vhci_softstate, instance); | |
| 802 return (DDI_FAILURE); | |
| 803 } | |
| 804 | |
| 805 | |
| 806 /*ARGSUSED*/ | |
| 807 static int | |
| 808 vhci_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) | |
| 809 { | |
| 810 int instance = ddi_get_instance(dip); | |
| 811 scsi_hba_tran_t *tran; | |
| 812 struct scsi_vhci *vhci; | |
| 813 | |
| 814 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_detach: cmd=0x%x\n", cmd)); | |
| 815 | |
| 816 if ((tran = ddi_get_driver_private(dip)) == NULL) | |
| 817 return (DDI_FAILURE); | |
| 818 | |
| 819 vhci = TRAN2HBAPRIVATE(tran); | |
| 820 if (!vhci) { | |
| 821 return (DDI_FAILURE); | |
| 822 } | |
| 823 | |
| 824 switch (cmd) { | |
| 825 case DDI_DETACH: | |
| 826 break; | |
| 827 | |
| 828 case DDI_SUSPEND: | |
| 829 case DDI_PM_SUSPEND: | |
| 830 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_detach: suspend/pm not yet" | |
| 831 "implemented\n")); | |
| 832 return (DDI_FAILURE); | |
| 833 | |
| 834 default: | |
| 835 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 836 "!vhci_detach: unknown ddi command\n")); | |
| 837 return (DDI_FAILURE); | |
| 838 } | |
| 839 | |
| 840 (void) mdi_vhci_unregister(dip, 0); | |
| 841 (void) scsi_hba_detach(dip); | |
| 842 scsi_hba_tran_free(tran); | |
| 843 | |
| 844 if (ddi_prop_remove(DDI_DEV_T_NONE, dip, | |
| 845 "pm-want-child-notification?") != DDI_PROP_SUCCESS) { | |
| 846 cmn_err(CE_WARN, | |
| 847 "%s%d unable to remove prop pm-want_child_notification?", | |
| 848 ddi_driver_name(dip), ddi_get_instance(dip)); | |
| 849 } | |
| 850 if (vhci_restart_timeid != 0) { | |
| 851 (void) untimeout(vhci_restart_timeid); | |
| 852 } | |
| 853 vhci_restart_timeid = 0; | |
| 854 | |
| 855 mutex_destroy(&vhci->vhci_mutex); | |
| 856 vhci->vhci_dip = NULL; | |
| 857 vhci->vhci_tran = NULL; | |
| 858 taskq_destroy(vhci->vhci_taskq); | |
| 859 taskq_destroy(vhci->vhci_update_pathstates_taskq); | |
| 860 ddi_remove_minor_node(dip, NULL); | |
| 861 ddi_soft_state_free(vhci_softstate, instance); | |
| 862 | |
| 863 vhci_failover_modclose(); /* unload failover modules */ | |
| 864 return (DDI_SUCCESS); | |
| 865 } | |
| 866 | |
| 867 /* | |
| 868 * vhci_getinfo() | |
| 869 * Given the device number, return the devinfo pointer or the | |
| 870 * instance number. | |
| 871 * Note: always succeed DDI_INFO_DEVT2INSTANCE, even before attach. | |
| 872 */ | |
| 873 | |
| 874 /*ARGSUSED*/ | |
| 875 static int | |
| 876 vhci_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) | |
| 877 { | |
| 878 struct scsi_vhci *vhcip; | |
| 879 int instance = MINOR2INST(getminor((dev_t)arg)); | |
| 880 | |
| 881 switch (cmd) { | |
| 882 case DDI_INFO_DEVT2DEVINFO: | |
| 883 vhcip = ddi_get_soft_state(vhci_softstate, instance); | |
| 884 if (vhcip != NULL) | |
| 885 *result = vhcip->vhci_dip; | |
| 886 else { | |
| 887 *result = NULL; | |
| 888 return (DDI_FAILURE); | |
| 889 } | |
| 890 break; | |
| 891 | |
| 892 case DDI_INFO_DEVT2INSTANCE: | |
| 893 *result = (void *)(uintptr_t)instance; | |
| 894 break; | |
| 895 | |
| 896 default: | |
| 897 return (DDI_FAILURE); | |
| 898 } | |
| 899 | |
| 900 return (DDI_SUCCESS); | |
| 901 } | |
| 902 | |
| 903 /*ARGSUSED*/ | |
| 904 static int | |
| 905 vhci_scsi_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip, | |
| 906 scsi_hba_tran_t *hba_tran, struct scsi_device *sd) | |
| 907 { | |
| 908 char *guid; | |
| 909 scsi_vhci_lun_t *vlun; | |
| 910 struct scsi_vhci *vhci; | |
| 911 clock_t from_ticks; | |
| 912 mdi_pathinfo_t *pip; | |
| 913 int rval; | |
| 914 | |
| 915 ASSERT(hba_dip != NULL); | |
| 916 ASSERT(tgt_dip != NULL); | |
| 917 | |
| 6777 | 918 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, |
| 919 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 920 /* | |
| 921 * This must be the .conf node without GUID property. | |
| 922 * The node under fp already inserts a delay, so we | |
| 923 * just return from here. We rely on this delay to have | |
| 924 * all dips be posted to the ndi hotplug thread's newdev | |
| 925 * list. This is necessary for the deferred attach | |
| 926 * mechanism to work and opens() done soon after boot to | |
| 927 * succeed. | |
| 928 */ | |
| 929 VHCI_DEBUG(4, (CE_WARN, hba_dip, "tgt_init: lun guid " | |
| 930 "property failed")); | |
| 931 return (DDI_NOT_WELL_FORMED); | |
| 932 } | |
| 933 | |
| 934 if (ndi_dev_is_persistent_node(tgt_dip) == 0) { | |
| 935 /* | |
| 936 * This must be .conf node with the GUID property. We don't | |
| 937 * merge property by ndi_merge_node() here because the | |
| 938 * devi_addr_buf of .conf node is "" always according the | |
| 939 * implementation of vhci_scsi_get_name_bus_addr(). | |
| 940 */ | |
| 941 ddi_set_name_addr(tgt_dip, NULL); | |
| 942 return (DDI_FAILURE); | |
| 943 } | |
| 944 | |
| 4851 | 945 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(hba_dip)); |
| 946 ASSERT(vhci != NULL); | |
| 947 | |
| 948 VHCI_DEBUG(4, (CE_NOTE, hba_dip, | |
| 949 "!tgt_init: called for %s (instance %d)\n", | |
| 950 ddi_driver_name(tgt_dip), ddi_get_instance(tgt_dip))); | |
| 951 | |
| 952 vlun = vhci_lun_lookup(tgt_dip); | |
| 953 | |
| 954 mutex_enter(&vhci_global_mutex); | |
| 955 | |
| 956 from_ticks = ddi_get_lbolt(); | |
| 957 if (vhci_to_ticks == 0) { | |
| 958 vhci_to_ticks = from_ticks + | |
| 959 drv_usectohz(vhci_init_wait_timeout); | |
| 960 } | |
| 961 | |
| 962 #if DEBUG | |
| 963 if (vlun) { | |
| 964 VHCI_DEBUG(1, (CE_WARN, hba_dip, "tgt_init: " | |
| 965 "vhci_scsi_tgt_init: guid %s : found vlun 0x%p " | |
| 966 "from_ticks %lx to_ticks %lx", | |
| 967 guid, (void *)vlun, from_ticks, vhci_to_ticks)); | |
| 968 } else { | |
| 969 VHCI_DEBUG(1, (CE_WARN, hba_dip, "tgt_init: " | |
| 970 "vhci_scsi_tgt_init: guid %s : vlun not found " | |
| 971 "from_ticks %lx to_ticks %lx", guid, from_ticks, | |
| 972 vhci_to_ticks)); | |
| 973 } | |
| 974 #endif | |
| 975 | |
| 976 rval = mdi_select_path(tgt_dip, NULL, | |
| 977 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), NULL, &pip); | |
| 978 if (rval == MDI_SUCCESS) { | |
| 979 mdi_rele_path(pip); | |
| 980 } | |
| 981 | |
| 982 /* | |
| 983 * Wait for the following conditions : | |
| 984 * 1. no vlun available yet | |
| 985 * 2. no path established | |
| 986 * 3. timer did not expire | |
| 987 */ | |
| 988 while ((vlun == NULL) || (mdi_client_get_path_count(tgt_dip) == 0) || | |
| 989 (rval != MDI_SUCCESS)) { | |
| 990 if (vlun && vlun->svl_not_supported) { | |
| 991 VHCI_DEBUG(1, (CE_WARN, hba_dip, "tgt_init: " | |
| 992 "vlun 0x%p lun guid %s not supported!", | |
| 993 (void *)vlun, guid)); | |
| 994 mutex_exit(&vhci_global_mutex); | |
| 995 ddi_prop_free(guid); | |
| 996 return (DDI_NOT_WELL_FORMED); | |
| 997 } | |
| 998 if ((vhci_first_time == 0) && (from_ticks >= vhci_to_ticks)) { | |
| 999 vhci_first_time = 1; | |
| 1000 } | |
| 1001 if (vhci_first_time == 1) { | |
| 1002 VHCI_DEBUG(1, (CE_WARN, hba_dip, "vhci_scsi_tgt_init: " | |
| 1003 "no wait for %s. from_tick %lx, to_tick %lx", | |
| 1004 guid, from_ticks, vhci_to_ticks)); | |
| 1005 mutex_exit(&vhci_global_mutex); | |
| 1006 ddi_prop_free(guid); | |
| 1007 return (DDI_NOT_WELL_FORMED); | |
| 1008 } | |
| 1009 | |
| 1010 if (cv_timedwait(&vhci_cv, | |
| 1011 &vhci_global_mutex, vhci_to_ticks) == -1) { | |
| 1012 /* Timed out */ | |
| 1013 #ifdef DEBUG | |
| 1014 if (vlun == NULL) { | |
| 1015 VHCI_DEBUG(1, (CE_WARN, hba_dip, | |
| 1016 "tgt_init: no vlun for %s!", guid)); | |
| 1017 } else if (mdi_client_get_path_count(tgt_dip) == 0) { | |
| 1018 VHCI_DEBUG(1, (CE_WARN, hba_dip, | |
| 1019 "tgt_init: client path count is " | |
| 1020 "zero for %s!", guid)); | |
| 1021 } else { | |
| 1022 VHCI_DEBUG(1, (CE_WARN, hba_dip, | |
| 1023 "tgt_init: client path not " | |
| 1024 "available yet for %s!", guid)); | |
| 1025 } | |
| 1026 #endif /* DEBUG */ | |
| 1027 mutex_exit(&vhci_global_mutex); | |
| 1028 ddi_prop_free(guid); | |
| 1029 return (DDI_NOT_WELL_FORMED); | |
| 1030 } | |
| 1031 vlun = vhci_lun_lookup(tgt_dip); | |
| 1032 rval = mdi_select_path(tgt_dip, NULL, | |
| 1033 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 1034 NULL, &pip); | |
| 1035 if (rval == MDI_SUCCESS) { | |
| 1036 mdi_rele_path(pip); | |
| 1037 } | |
| 1038 from_ticks = ddi_get_lbolt(); | |
| 1039 } | |
| 1040 mutex_exit(&vhci_global_mutex); | |
| 1041 | |
| 1042 ASSERT(vlun != NULL); | |
| 1043 ddi_prop_free(guid); | |
| 1044 hba_tran->tran_tgt_private = vlun; | |
| 1045 | |
| 1046 return (DDI_SUCCESS); | |
| 1047 } | |
| 1048 | |
| 1049 /*ARGSUSED*/ | |
| 1050 static void | |
| 1051 vhci_scsi_tgt_free(dev_info_t *hba_dip, dev_info_t *tgt_dip, | |
| 1052 scsi_hba_tran_t *hba_tran, struct scsi_device *sd) | |
| 1053 { | |
| 1054 } | |
| 1055 | |
| 1056 /* | |
| 1057 * a PGR register command has started; copy the info we need | |
| 1058 */ | |
| 1059 int | |
| 1060 vhci_pgr_register_start(scsi_vhci_lun_t *vlun, struct scsi_pkt *pkt) | |
| 1061 { | |
| 1062 struct vhci_pkt *vpkt = TGTPKT2VHCIPKT(pkt); | |
| 1063 void *addr; | |
| 1064 | |
| 1065 if (!vpkt->vpkt_tgt_init_bp) | |
| 1066 return (TRAN_BADPKT); | |
| 1067 | |
| 1068 addr = bp_mapin_common(vpkt->vpkt_tgt_init_bp, | |
| 1069 (vpkt->vpkt_flags & CFLAG_NOWAIT) ? VM_NOSLEEP : VM_SLEEP); | |
| 1070 if (addr == NULL) | |
| 1071 return (TRAN_BUSY); | |
| 1072 | |
| 1073 mutex_enter(&vlun->svl_mutex); | |
| 1074 | |
| 1075 vhci_print_prout_keys(vlun, "v_pgr_reg_start: before bcopy:"); | |
| 1076 | |
| 1077 bcopy(addr, &vlun->svl_prout, sizeof (vhci_prout_t) - | |
| 1078 (2 * MHIOC_RESV_KEY_SIZE*sizeof (char))); | |
| 1079 bcopy(pkt->pkt_cdbp, vlun->svl_cdb, sizeof (vlun->svl_cdb)); | |
| 1080 | |
| 1081 vhci_print_prout_keys(vlun, "v_pgr_reg_start: after bcopy:"); | |
| 1082 | |
| 1083 vlun->svl_time = pkt->pkt_time; | |
| 1084 vlun->svl_bcount = vpkt->vpkt_tgt_init_bp->b_bcount; | |
| 1085 vlun->svl_first_path = vpkt->vpkt_path; | |
| 1086 mutex_exit(&vlun->svl_mutex); | |
| 1087 return (0); | |
| 1088 } | |
| 1089 | |
| 1090 /* | |
| 1091 * Function name : vhci_scsi_start() | |
| 1092 * | |
| 1093 * Return Values : TRAN_FATAL_ERROR - vhci has been shutdown | |
| 1094 * or other fatal failure | |
| 1095 * preventing packet transportation | |
| 1096 * TRAN_BUSY - request queue is full | |
| 1097 * TRAN_ACCEPT - pkt has been submitted to phci | |
| 1098 * (or is held in the waitQ) | |
| 1099 * Description : Implements SCSA's tran_start() entry point for | |
| 1100 * packet transport | |
| 1101 * | |
| 1102 */ | |
| 1103 static int | |
| 1104 vhci_scsi_start(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1105 { | |
| 1106 int rval = TRAN_ACCEPT; | |
| 1107 int instance, held; | |
| 1108 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 1109 struct scsi_vhci_lun *vlun = ADDR2VLUN(ap); | |
| 1110 struct vhci_pkt *vpkt = TGTPKT2VHCIPKT(pkt); | |
| 1111 int flags = 0; | |
| 1112 scsi_vhci_priv_t *svp; | |
| 1113 dev_info_t *cdip; | |
| 1114 client_lb_t lbp; | |
| 1115 int restore_lbp = 0; | |
| 1116 /* set if pkt is SCSI-II RESERVE cmd */ | |
| 1117 int pkt_reserve_cmd = 0; | |
| 1118 int reserve_failed = 0; | |
| 1119 | |
| 1120 ASSERT(vhci != NULL); | |
| 1121 ASSERT(vpkt != NULL); | |
| 1122 ASSERT(vpkt->vpkt_state != VHCI_PKT_ISSUED); | |
| 1123 cdip = ADDR2DIP(ap); | |
| 1124 | |
| 1125 /* | |
| 1126 * Block IOs if LUN is held or QUIESCED for IOs. | |
| 1127 */ | |
| 1128 if ((VHCI_LUN_IS_HELD(vlun)) || | |
| 1129 ((vlun->svl_flags & VLUN_QUIESCED_FLG) == VLUN_QUIESCED_FLG)) { | |
| 1130 return (TRAN_BUSY); | |
| 1131 } | |
| 1132 | |
| 1133 /* | |
| 1134 * vhci_lun needs to be quiesced before SCSI-II RESERVE command | |
| 1135 * can be issued. This may require a cv_timedwait, which is | |
| 1136 * dangerous to perform in an interrupt context. So if this | |
| 1137 * is a RESERVE command a taskq is dispatched to service it. | |
| 1138 * This taskq shall again call vhci_scsi_start, but we shall be | |
| 1139 * sure its not in an interrupt context. | |
| 1140 */ | |
| 1141 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 1142 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 1143 if (!(vpkt->vpkt_state & VHCI_PKT_THRU_TASKQ)) { | |
| 1144 if (taskq_dispatch(vhci->vhci_taskq, | |
| 1145 vhci_dispatch_scsi_start, (void *) vpkt, | |
| 1146 KM_NOSLEEP)) { | |
| 1147 return (TRAN_ACCEPT); | |
| 1148 } else { | |
| 1149 return (TRAN_BUSY); | |
| 1150 } | |
| 1151 } | |
| 1152 | |
| 1153 /* | |
| 1154 * Here we ensure that simultaneous SCSI-II RESERVE cmds don't | |
| 1155 * get serviced for a lun. | |
| 1156 */ | |
| 1157 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 1158 if (!held) { | |
| 1159 return (TRAN_BUSY); | |
| 1160 } else if ((vlun->svl_flags & VLUN_QUIESCED_FLG) == | |
| 1161 VLUN_QUIESCED_FLG) { | |
| 1162 VHCI_RELEASE_LUN(vlun); | |
| 1163 return (TRAN_BUSY); | |
| 1164 } | |
| 1165 | |
| 1166 /* | |
| 1167 * To ensure that no IOs occur for this LUN for the duration | |
| 1168 * of this pkt set the VLUN_QUIESCED_FLG. | |
| 1169 * In case this routine needs to exit on error make sure that | |
| 1170 * this flag is cleared. | |
| 1171 */ | |
| 1172 vlun->svl_flags |= VLUN_QUIESCED_FLG; | |
| 1173 pkt_reserve_cmd = 1; | |
| 1174 | |
| 1175 /* | |
| 1176 * if this is a SCSI-II RESERVE command, set load balancing | |
| 1177 * policy to be ALTERNATE PATH to ensure that all subsequent | |
| 1178 * IOs are routed on the same path. This is because if commands | |
| 1179 * are routed across multiple paths then IOs on paths other than | |
| 1180 * the one on which the RESERVE was executed will get a | |
| 1181 * RESERVATION CONFLICT | |
| 1182 */ | |
| 1183 lbp = mdi_get_lb_policy(cdip); | |
| 1184 if (lbp != LOAD_BALANCE_NONE) { | |
| 1185 if (vhci_quiesce_lun(vlun) != 1) { | |
| 1186 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1187 VHCI_RELEASE_LUN(vlun); | |
| 1188 return (TRAN_FATAL_ERROR); | |
| 1189 } | |
| 1190 vlun->svl_lb_policy_save = lbp; | |
| 1191 if (mdi_set_lb_policy(cdip, LOAD_BALANCE_NONE) != | |
| 1192 MDI_SUCCESS) { | |
| 1193 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1194 VHCI_RELEASE_LUN(vlun); | |
| 1195 return (TRAN_FATAL_ERROR); | |
| 1196 } | |
| 1197 restore_lbp = 1; | |
| 1198 } | |
| 1199 /* | |
| 1200 * See comments for VLUN_RESERVE_ACTIVE_FLG in scsi_vhci.h | |
| 1201 * To narrow this window where a reserve command may be sent | |
| 1202 * down an inactive path the path states first need to be | |
| 1203 * updated. Before calling vhci_update_pathstates reset | |
| 1204 * VLUN_RESERVE_ACTIVE_FLG, just in case it was already set | |
| 1205 * for this lun. This shall prevent an unnecessary reset | |
| 1206 * from being sent out. | |
| 1207 */ | |
| 1208 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 1209 vhci_update_pathstates((void *)vlun); | |
| 1210 } | |
| 1211 | |
| 1212 instance = ddi_get_instance(vhci->vhci_dip); | |
| 1213 | |
| 1214 /* | |
| 1215 * If the command is PRIN with action of zero, then the cmd | |
| 1216 * is reading PR keys which requires filtering on completion. | |
| 1217 * Data cache sync must be guaranteed. | |
| 1218 */ | |
|
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changeset
|
1219 if ((pkt->pkt_cdbp[0] == SCMD_PRIN) && (pkt->pkt_cdbp[1] == 0) && |
| 4851 | 1220 (vpkt->vpkt_org_vpkt == NULL)) { |
| 1221 vpkt->vpkt_tgt_init_pkt_flags |= PKT_CONSISTENT; | |
| 1222 } | |
| 1223 | |
| 1224 /* | |
| 1225 * Do not defer bind for PKT_DMA_PARTIAL | |
| 1226 */ | |
| 1227 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1228 | |
| 1229 /* This is a non pkt_dma_partial case */ | |
| 1230 if ((rval = vhci_bind_transport( | |
| 1231 ap, vpkt, vpkt->vpkt_tgt_init_pkt_flags, NULL_FUNC)) | |
| 1232 != TRAN_ACCEPT) { | |
| 1233 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1234 "!vhci%d %x: failed to bind transport: " | |
| 1235 "vlun 0x%p pkt_reserved %x restore_lbp %x," | |
| 1236 "lbp %x", instance, rval, (void *)vlun, | |
| 1237 pkt_reserve_cmd, restore_lbp, lbp)); | |
| 1238 if (restore_lbp) | |
| 1239 (void) mdi_set_lb_policy(cdip, lbp); | |
| 1240 if (pkt_reserve_cmd) | |
| 1241 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1242 return (rval); | |
| 1243 } | |
| 1244 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1245 "vhci_scsi_start: v_b_t called 0x%p\n", (void *)vpkt)); | |
| 1246 } | |
| 1247 ASSERT(vpkt->vpkt_hba_pkt != NULL); | |
| 1248 ASSERT(vpkt->vpkt_path != NULL); | |
| 1249 | |
| 1250 /* | |
| 1251 * This is the chance to adjust the pHCI's pkt and other information | |
| 1252 * from target driver's pkt. | |
| 1253 */ | |
| 1254 VHCI_DEBUG(8, (CE_NOTE, vhci->vhci_dip, "vhci_scsi_start vpkt %p\n", | |
| 1255 (void *)vpkt)); | |
| 1256 vhci_update_pHCI_pkt(vpkt, pkt); | |
| 1257 | |
| 1258 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 1259 if (vpkt->vpkt_path != vlun->svl_resrv_pip) { | |
| 1260 VHCI_DEBUG(1, (CE_WARN, vhci->vhci_dip, | |
| 1261 "!vhci_bind: reserve flag set for vlun 0x%p, but, " | |
| 1262 "pktpath 0x%p resrv path 0x%p differ. lb_policy %x", | |
| 1263 (void *)vlun, (void *)vpkt->vpkt_path, | |
| 1264 (void *)vlun->svl_resrv_pip, | |
| 1265 mdi_get_lb_policy(cdip))); | |
| 1266 reserve_failed = 1; | |
| 1267 } | |
| 1268 } | |
| 1269 | |
|
6941
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6459247 scsi_vhci does not return correct value for dma-max property
rralphs
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diff
changeset
|
1270 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(vpkt->vpkt_path); |
| 4851 | 1271 if (svp == NULL || reserve_failed) { |
| 1272 if (pkt_reserve_cmd) { | |
| 1273 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1274 "!vhci_bind returned null svp vlun 0x%p", | |
| 1275 (void *)vlun)); | |
| 1276 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1277 if (restore_lbp) | |
| 1278 (void) mdi_set_lb_policy(cdip, lbp); | |
| 1279 } | |
| 1280 pkt_cleanup: | |
| 1281 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1282 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1283 vpkt->vpkt_hba_pkt = NULL; | |
| 1284 if (vpkt->vpkt_path) { | |
| 1285 mdi_rele_path(vpkt->vpkt_path); | |
| 1286 vpkt->vpkt_path = NULL; | |
| 1287 } | |
| 1288 } | |
| 1289 if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 1290 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
changeset
|
1291 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE))) { |
| 4851 | 1292 sema_v(&vlun->svl_pgr_sema); |
| 1293 } | |
| 1294 return (TRAN_BUSY); | |
| 1295 } | |
| 1296 | |
| 1297 VHCI_INCR_PATH_CMDCOUNT(svp); | |
| 1298 | |
| 1299 /* | |
| 1300 * Ensure that no other IOs raced ahead, while a RESERVE cmd was | |
| 1301 * QUIESCING the same lun. | |
| 1302 */ | |
| 1303 if ((!pkt_reserve_cmd) && | |
| 1304 ((vlun->svl_flags & VLUN_QUIESCED_FLG) == VLUN_QUIESCED_FLG)) { | |
| 1305 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 1306 goto pkt_cleanup; | |
| 1307 } | |
| 1308 | |
| 1309 if ((pkt->pkt_cdbp[0] == SCMD_PRIN) || | |
| 1310 (pkt->pkt_cdbp[0] == SCMD_PROUT)) { | |
| 1311 /* | |
| 1312 * currently this thread only handles running PGR | |
| 1313 * commands, so don't bother creating it unless | |
| 1314 * something interesting is going to happen (like | |
| 1315 * either a PGR out, or a PGR in with enough space | |
| 1316 * to hold the keys that are getting returned) | |
| 1317 */ | |
| 1318 mutex_enter(&vlun->svl_mutex); | |
| 1319 if (((vlun->svl_flags & VLUN_TASK_D_ALIVE_FLG) == 0) && | |
| 1320 (pkt->pkt_cdbp[0] == SCMD_PROUT)) { | |
| 1321 vlun->svl_taskq = taskq_create("vlun_pgr_task_daemon", | |
| 1322 1, MINCLSYSPRI, 1, 4, 0); | |
| 1323 vlun->svl_flags |= VLUN_TASK_D_ALIVE_FLG; | |
| 1324 } | |
| 1325 mutex_exit(&vlun->svl_mutex); | |
| 1326 if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 1327 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
1328 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE))) { |
| 4851 | 1329 if (rval = vhci_pgr_register_start(vlun, pkt)) { |
| 1330 /* an error */ | |
| 1331 sema_v(&vlun->svl_pgr_sema); | |
| 1332 return (rval); | |
| 1333 } | |
| 1334 } | |
| 1335 } | |
| 1336 | |
| 1337 /* | |
| 1338 * SCSI-II RESERVE cmd is not expected in polled mode. | |
| 1339 * If this changes it needs to be handled for the polled scenario. | |
| 1340 */ | |
| 1341 flags = vpkt->vpkt_hba_pkt->pkt_flags; | |
|
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1342 |
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1343 /* |
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1344 * Set the path_instance *before* sending the scsi_pkt down the path |
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1345 * to mpxio's pHCI so that additional path abstractions at a pHCI |
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1346 * level (like maybe iSCSI at some point in the future) can update |
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1347 * the path_instance. |
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1348 */ |
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1349 if (scsi_pkt_allocated_correctly(vpkt->vpkt_hba_pkt)) |
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1350 vpkt->vpkt_hba_pkt->pkt_path_instance = |
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1351 mdi_pi_get_path_instance(vpkt->vpkt_path); |
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1352 |
| 4851 | 1353 rval = scsi_transport(vpkt->vpkt_hba_pkt); |
| 1354 if (rval == TRAN_ACCEPT) { | |
| 1355 if (flags & FLAG_NOINTR) { | |
| 1356 struct scsi_pkt *tpkt = vpkt->vpkt_tgt_pkt; | |
| 1357 struct scsi_pkt *pkt = vpkt->vpkt_hba_pkt; | |
| 1358 | |
| 1359 ASSERT(tpkt != NULL); | |
| 1360 *(tpkt->pkt_scbp) = *(pkt->pkt_scbp); | |
| 1361 tpkt->pkt_resid = pkt->pkt_resid; | |
| 1362 tpkt->pkt_state = pkt->pkt_state; | |
| 1363 tpkt->pkt_statistics = pkt->pkt_statistics; | |
| 1364 tpkt->pkt_reason = pkt->pkt_reason; | |
| 1365 | |
| 1366 if ((*(pkt->pkt_scbp) == STATUS_CHECK) && | |
| 1367 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 1368 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 1369 vpkt->vpkt_tgt_init_scblen); | |
| 1370 } | |
| 1371 | |
| 1372 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 1373 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1374 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1375 vpkt->vpkt_hba_pkt = NULL; | |
| 1376 if (vpkt->vpkt_path) { | |
| 1377 mdi_rele_path(vpkt->vpkt_path); | |
| 1378 vpkt->vpkt_path = NULL; | |
| 1379 } | |
| 1380 } | |
| 1381 /* | |
| 1382 * This path will not automatically retry pkts | |
| 1383 * internally, therefore, vpkt_org_vpkt should | |
| 1384 * never be set. | |
| 1385 */ | |
| 1386 ASSERT(vpkt->vpkt_org_vpkt == NULL); | |
| 1387 if (tpkt->pkt_comp) { | |
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1388 tpkt->pkt_comp(tpkt); |
| 4851 | 1389 } |
| 1390 } | |
| 1391 return (rval); | |
| 1392 } else if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 1393 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
| 1394 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE))) { | |
| 1395 /* the command exited with bad status */ | |
| 1396 sema_v(&vlun->svl_pgr_sema); | |
| 1397 } else if (vpkt->vpkt_tgt_pkt->pkt_cdbp[0] == SCMD_PRIN) { | |
| 1398 /* the command exited with bad status */ | |
| 1399 sema_v(&vlun->svl_pgr_sema); | |
| 1400 } else if (pkt_reserve_cmd) { | |
| 1401 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1402 "!vhci_scsi_start: reserve failed vlun 0x%p", | |
| 1403 (void *)vlun)); | |
| 1404 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 1405 if (restore_lbp) | |
| 1406 (void) mdi_set_lb_policy(cdip, lbp); | |
| 1407 } | |
| 1408 | |
| 1409 ASSERT(vpkt->vpkt_hba_pkt != NULL); | |
| 1410 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 1411 | |
| 1412 /* Do not destroy phci packet information for PKT_DMA_PARTIAL */ | |
| 1413 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 1414 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1415 vpkt->vpkt_hba_pkt = NULL; | |
| 1416 if (vpkt->vpkt_path) { | |
| 1417 MDI_PI_ERRSTAT(vpkt->vpkt_path, MDI_PI_TRANSERR); | |
| 1418 mdi_rele_path(vpkt->vpkt_path); | |
| 1419 vpkt->vpkt_path = NULL; | |
| 1420 } | |
| 1421 } | |
| 1422 return (TRAN_BUSY); | |
| 1423 } | |
| 1424 | |
| 1425 /* | |
| 1426 * Function name : vhci_scsi_reset() | |
| 1427 * | |
| 1428 * Return Values : 0 - reset failed | |
| 1429 * 1 - reset succeeded | |
| 1430 */ | |
| 1431 | |
| 1432 /* ARGSUSED */ | |
| 1433 static int | |
| 1434 vhci_scsi_reset(struct scsi_address *ap, int level) | |
| 1435 { | |
| 1436 int rval = 0; | |
| 1437 | |
| 1438 cmn_err(CE_WARN, "!vhci_scsi_reset 0x%x", level); | |
| 1439 if ((level == RESET_TARGET) || (level == RESET_LUN)) { | |
| 1440 return (vhci_scsi_reset_target(ap, level, TRUE)); | |
| 1441 } else if (level == RESET_ALL) { | |
| 1442 return (vhci_scsi_reset_bus(ap)); | |
| 1443 } | |
| 1444 | |
| 1445 return (rval); | |
| 1446 } | |
| 1447 | |
| 1448 /* | |
| 1449 * vhci_recovery_reset: | |
| 1450 * Issues reset to the device | |
| 1451 * Input: | |
| 1452 * vlun - vhci lun pointer of the device | |
| 1453 * ap - address of the device | |
| 1454 * select_path: | |
| 1455 * If select_path is FALSE, then the address specified in ap is | |
| 1456 * the path on which reset will be issued. | |
| 1457 * If select_path is TRUE, then path is obtained by calling | |
| 1458 * mdi_select_path. | |
| 1459 * | |
| 1460 * recovery_depth: | |
| 1461 * Caller can specify the level of reset. | |
| 1462 * VHCI_DEPTH_LUN - | |
| 1463 * Issues LUN RESET if device supports lun reset. | |
| 1464 * VHCI_DEPTH_TARGET - | |
| 1465 * If Lun Reset fails or the device does not support | |
| 1466 * Lun Reset, issues TARGET RESET | |
| 1467 * VHCI_DEPTH_ALL - | |
| 1468 * If Lun Reset fails or the device does not support | |
| 1469 * Lun Reset, issues TARGET RESET. | |
| 1470 * If TARGET RESET does not succeed, issues Bus Reset. | |
| 1471 */ | |
| 1472 | |
| 1473 static int | |
| 1474 vhci_recovery_reset(scsi_vhci_lun_t *vlun, struct scsi_address *ap, | |
| 1475 uint8_t select_path, uint8_t recovery_depth) | |
| 1476 { | |
| 1477 int ret = 0; | |
| 1478 | |
| 1479 ASSERT(ap != NULL); | |
| 1480 | |
| 1481 if (vlun && vlun->svl_support_lun_reset == 1) { | |
| 1482 ret = vhci_scsi_reset_target(ap, RESET_LUN, | |
| 1483 select_path); | |
| 1484 } | |
| 1485 | |
| 1486 recovery_depth--; | |
| 1487 | |
| 1488 if ((ret == 0) && recovery_depth) { | |
| 1489 ret = vhci_scsi_reset_target(ap, RESET_TARGET, | |
| 1490 select_path); | |
| 1491 recovery_depth--; | |
| 1492 } | |
| 1493 | |
| 1494 if ((ret == 0) && recovery_depth) { | |
| 1495 (void) scsi_reset(ap, RESET_ALL); | |
| 1496 } | |
| 1497 | |
| 1498 return (ret); | |
| 1499 } | |
| 1500 | |
| 1501 /* | |
| 1502 * Note: The scsi_address passed to this routine could be the scsi_address | |
| 1503 * for the virtual device or the physical device. No assumptions should be | |
| 1504 * made in this routine about the ap structure and a_hba_tran->tran_tgt_private | |
| 1505 * field of ap can not be assumed to be the vhci structure. | |
| 1506 * Further note that the child dip would be the dip of the ssd node irrespective | |
| 1507 * of the scsi_address passed. | |
| 1508 */ | |
| 1509 | |
| 1510 static int | |
| 1511 vhci_scsi_reset_target(struct scsi_address *ap, int level, uint8_t select_path) | |
| 1512 { | |
| 1513 dev_info_t *vdip, *pdip, *cdip = ADDR2DIP(ap); | |
| 1514 mdi_pathinfo_t *pip = NULL; | |
| 1515 mdi_pathinfo_t *npip = NULL; | |
| 1516 int rval = -1; | |
| 1517 scsi_vhci_priv_t *svp = NULL; | |
| 1518 struct scsi_address *pap = NULL; | |
| 1519 scsi_hba_tran_t *hba = NULL; | |
| 1520 int sps; | |
| 1521 struct scsi_vhci *vhci = NULL; | |
| 1522 | |
| 1523 if (select_path != TRUE) { | |
| 1524 ASSERT(ap != NULL); | |
| 1525 if (level == RESET_LUN) { | |
| 1526 hba = ap->a_hba_tran; | |
| 1527 ASSERT(hba != NULL); | |
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1528 return (hba->tran_reset(ap, RESET_LUN)); |
| 4851 | 1529 } |
| 1530 return (scsi_reset(ap, level)); | |
| 1531 } | |
| 1532 | |
| 1533 ASSERT(cdip != NULL); | |
| 1534 vdip = ddi_get_parent(cdip); | |
| 1535 ASSERT(vdip != NULL); | |
| 1536 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 1537 ASSERT(vhci != NULL); | |
| 1538 | |
| 1539 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, NULL, &pip); | |
| 1540 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 1541 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_scsi_reset_target: " | |
| 1542 "Unable to get a path, dip 0x%p", (void *)cdip)); | |
| 1543 return (0); | |
| 1544 } | |
| 1545 again: | |
| 1546 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 1547 if (svp == NULL) { | |
| 1548 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_scsi_reset_target: " | |
| 1549 "priv is NULL, pip 0x%p", (void *)pip)); | |
| 1550 mdi_rele_path(pip); | |
| 1551 return (0); | |
| 1552 } | |
| 1553 | |
| 1554 if (svp->svp_psd == NULL) { | |
| 1555 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_scsi_reset_target: " | |
| 1556 "psd is NULL, pip 0x%p, svp 0x%p", | |
| 1557 (void *)pip, (void *)svp)); | |
| 1558 mdi_rele_path(pip); | |
| 1559 return (0); | |
| 1560 } | |
| 1561 | |
| 1562 pap = &svp->svp_psd->sd_address; | |
| 1563 hba = pap->a_hba_tran; | |
| 1564 | |
| 1565 ASSERT(pap != NULL); | |
| 1566 ASSERT(hba != NULL); | |
| 1567 | |
| 1568 if (hba->tran_reset != NULL) { | |
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1569 if (hba->tran_reset(pap, level) == 0) { |
| 4851 | 1570 pdip = mdi_pi_get_phci(pip); |
| 1571 vhci_log(CE_WARN, vdip, "!(%s%d):" | |
| 1572 " path (%s%d), reset %d failed", | |
| 1573 ddi_driver_name(cdip), ddi_get_instance(cdip), | |
| 1574 ddi_driver_name(pdip), ddi_get_instance(pdip), | |
| 1575 level); | |
| 1576 | |
| 1577 /* | |
| 1578 * Select next path and issue the reset, repeat | |
| 1579 * until all paths are exhausted | |
| 1580 */ | |
| 1581 sps = mdi_select_path(cdip, NULL, | |
| 1582 MDI_SELECT_ONLINE_PATH, pip, &npip); | |
| 1583 if ((sps != MDI_SUCCESS) || (npip == NULL)) { | |
| 1584 mdi_rele_path(pip); | |
| 1585 return (0); | |
| 1586 } | |
| 1587 mdi_rele_path(pip); | |
| 1588 pip = npip; | |
| 1589 goto again; | |
| 1590 } | |
| 1591 mdi_rele_path(pip); | |
| 1592 mutex_enter(&vhci->vhci_mutex); | |
| 1593 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
| 1594 &vhci->vhci_reset_notify_listf); | |
| 1595 mutex_exit(&vhci->vhci_mutex); | |
| 1596 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_scsi_reset_target: " | |
| 1597 "reset %d sent down pip:%p for cdip:%p\n", level, | |
| 1598 (void *)pip, (void *)cdip)); | |
| 1599 return (1); | |
| 1600 } | |
| 1601 mdi_rele_path(pip); | |
| 1602 return (0); | |
| 1603 } | |
| 1604 | |
| 1605 | |
| 1606 /* ARGSUSED */ | |
| 1607 static int | |
| 1608 vhci_scsi_reset_bus(struct scsi_address *ap) | |
| 1609 { | |
| 1610 return (1); | |
| 1611 } | |
| 1612 | |
| 1613 | |
| 1614 /* | |
| 1615 * called by vhci_getcap and vhci_setcap to get and set (respectively) | |
| 1616 * SCSI capabilities | |
| 1617 */ | |
| 1618 /* ARGSUSED */ | |
| 1619 static int | |
| 1620 vhci_commoncap(struct scsi_address *ap, char *cap, | |
| 1621 int val, int tgtonly, int doset) | |
| 1622 { | |
| 1623 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 1624 struct scsi_vhci_lun *vlun = ADDR2VLUN(ap); | |
| 1625 int cidx; | |
| 1626 int rval = 0; | |
| 1627 | |
| 1628 if (cap == (char *)0) { | |
| 1629 VHCI_DEBUG(3, (CE_WARN, vhci->vhci_dip, | |
| 1630 "!vhci_commoncap: invalid arg")); | |
| 1631 return (rval); | |
| 1632 } | |
| 1633 | |
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1634 if (vlun == NULL) { |
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1635 VHCI_DEBUG(3, (CE_WARN, vhci->vhci_dip, |
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1636 "!vhci_commoncap: vlun is null")); |
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1637 return (rval); |
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1638 } |
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1639 |
| 4851 | 1640 if ((cidx = scsi_hba_lookup_capstr(cap)) == -1) { |
| 1641 return (UNDEFINED); | |
| 1642 } | |
| 1643 | |
| 1644 /* | |
| 1645 * Process setcap request. | |
| 1646 */ | |
| 1647 if (doset) { | |
| 1648 /* | |
| 1649 * At present, we can only set binary (0/1) values | |
| 1650 */ | |
| 1651 switch (cidx) { | |
| 1652 case SCSI_CAP_ARQ: | |
| 1653 if (val == 0) { | |
| 1654 rval = 0; | |
| 1655 } else { | |
| 1656 rval = 1; | |
| 1657 } | |
| 1658 break; | |
| 1659 | |
| 1660 case SCSI_CAP_LUN_RESET: | |
| 1661 if (tgtonly == 0) { | |
| 1662 VHCI_DEBUG(1, (CE_WARN, vhci->vhci_dip, | |
| 1663 "scsi_vhci_setcap: " | |
| 1664 "Returning error since whom = 0")); | |
| 1665 rval = -1; | |
| 1666 break; | |
| 1667 } | |
| 1668 /* | |
| 1669 * Set the capability accordingly. | |
| 1670 */ | |
| 1671 mutex_enter(&vlun->svl_mutex); | |
| 1672 vlun->svl_support_lun_reset = val; | |
| 1673 rval = val; | |
| 1674 mutex_exit(&vlun->svl_mutex); | |
| 1675 break; | |
| 1676 | |
| 1677 case SCSI_CAP_SECTOR_SIZE: | |
| 1678 mutex_enter(&vlun->svl_mutex); | |
| 1679 vlun->svl_sector_size = val; | |
| 1680 vlun->svl_setcap_done = 1; | |
| 1681 mutex_exit(&vlun->svl_mutex); | |
| 1682 (void) vhci_pHCI_cap(ap, cap, val, tgtonly, NULL); | |
| 1683 | |
| 1684 /* Always return success */ | |
| 1685 rval = 1; | |
| 1686 break; | |
| 1687 | |
| 1688 default: | |
| 1689 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1690 "!vhci_setcap: unsupported %d", cidx)); | |
| 1691 rval = UNDEFINED; | |
| 1692 break; | |
| 1693 } | |
| 1694 | |
| 1695 VHCI_DEBUG(6, (CE_NOTE, vhci->vhci_dip, | |
| 1696 "!set cap: cap=%s, val/tgtonly/doset/rval = " | |
| 1697 "0x%x/0x%x/0x%x/%d\n", | |
| 1698 cap, val, tgtonly, doset, rval)); | |
| 1699 | |
| 1700 } else { | |
| 1701 /* | |
| 1702 * Process getcap request. | |
| 1703 */ | |
| 1704 switch (cidx) { | |
| 1705 case SCSI_CAP_DMA_MAX: | |
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1706 /* |
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1707 * For X86 this capability is caught in scsi_ifgetcap(). |
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1708 * XXX Should this be getting the value from the pHCI? |
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1709 */ |
| 4851 | 1710 rval = (int)VHCI_DMA_MAX_XFER_CAP; |
| 1711 break; | |
| 1712 | |
| 1713 case SCSI_CAP_INITIATOR_ID: | |
| 1714 rval = 0x00; | |
| 1715 break; | |
| 1716 | |
| 1717 case SCSI_CAP_ARQ: | |
| 1718 case SCSI_CAP_RESET_NOTIFICATION: | |
| 1719 case SCSI_CAP_TAGGED_QING: | |
| 1720 rval = 1; | |
| 1721 break; | |
| 1722 | |
| 1723 case SCSI_CAP_SCSI_VERSION: | |
| 1724 rval = 3; | |
| 1725 break; | |
| 1726 | |
| 1727 case SCSI_CAP_INTERCONNECT_TYPE: | |
| 1728 rval = INTERCONNECT_FABRIC; | |
| 1729 break; | |
| 1730 | |
| 1731 case SCSI_CAP_LUN_RESET: | |
| 1732 /* | |
| 1733 * scsi_vhci will always return success for LUN reset. | |
| 1734 * When request for doing LUN reset comes | |
| 1735 * through scsi_reset entry point, at that time attempt | |
| 1736 * will be made to do reset through all the possible | |
| 1737 * paths. | |
| 1738 */ | |
| 1739 mutex_enter(&vlun->svl_mutex); | |
| 1740 rval = vlun->svl_support_lun_reset; | |
| 1741 mutex_exit(&vlun->svl_mutex); | |
| 1742 VHCI_DEBUG(4, (CE_WARN, vhci->vhci_dip, | |
| 1743 "scsi_vhci_getcap:" | |
| 1744 "Getting the Lun reset capability %d", rval)); | |
| 1745 break; | |
| 1746 | |
| 1747 case SCSI_CAP_SECTOR_SIZE: | |
| 1748 mutex_enter(&vlun->svl_mutex); | |
| 1749 rval = vlun->svl_sector_size; | |
| 1750 mutex_exit(&vlun->svl_mutex); | |
| 1751 break; | |
| 1752 | |
|
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1753 case SCSI_CAP_CDB_LEN: |
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1754 rval = VHCI_SCSI_CDB_SIZE; |
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1755 break; |
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1756 |
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1757 case SCSI_CAP_DMA_MAX_ARCH: |
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1758 /* |
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1759 * For X86 this capability is caught in scsi_ifgetcap(). |
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1760 * XXX Should this be getting the value from the pHCI? |
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1761 */ |
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1762 rval = 0; |
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1763 break; |
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1764 |
| 4851 | 1765 default: |
| 1766 VHCI_DEBUG(6, (CE_WARN, vhci->vhci_dip, | |
| 1767 "!vhci_getcap: unsupported %d", cidx)); | |
| 1768 rval = UNDEFINED; | |
| 1769 break; | |
| 1770 } | |
| 1771 | |
| 1772 VHCI_DEBUG(6, (CE_NOTE, vhci->vhci_dip, | |
| 1773 "!get cap: cap=%s, val/tgtonly/doset/rval = " | |
| 1774 "0x%x/0x%x/0x%x/%d\n", | |
| 1775 cap, val, tgtonly, doset, rval)); | |
| 1776 } | |
| 1777 return (rval); | |
| 1778 } | |
| 1779 | |
| 1780 | |
| 1781 /* | |
| 1782 * Function name : vhci_scsi_getcap() | |
| 1783 * | |
| 1784 */ | |
| 1785 static int | |
| 1786 vhci_scsi_getcap(struct scsi_address *ap, char *cap, int whom) | |
| 1787 { | |
| 1788 return (vhci_commoncap(ap, cap, 0, whom, 0)); | |
| 1789 } | |
| 1790 | |
| 1791 static int | |
| 1792 vhci_scsi_setcap(struct scsi_address *ap, char *cap, int value, int whom) | |
| 1793 { | |
| 1794 return (vhci_commoncap(ap, cap, value, whom, 1)); | |
| 1795 } | |
| 1796 | |
| 1797 /* | |
| 1798 * Function name : vhci_scsi_abort() | |
| 1799 */ | |
| 1800 /* ARGSUSED */ | |
| 1801 static int | |
| 1802 vhci_scsi_abort(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1803 { | |
| 1804 return (0); | |
| 1805 } | |
| 1806 | |
| 1807 /* | |
| 1808 * Function name : vhci_scsi_init_pkt | |
| 1809 * | |
| 1810 * Return Values : pointer to scsi_pkt, or NULL | |
| 1811 */ | |
| 1812 /* ARGSUSED */ | |
| 1813 static struct scsi_pkt * | |
| 1814 vhci_scsi_init_pkt(struct scsi_address *ap, struct scsi_pkt *pkt, | |
| 1815 struct buf *bp, int cmdlen, int statuslen, int tgtlen, | |
| 1816 int flags, int (*callback)(caddr_t), caddr_t arg) | |
| 1817 { | |
| 1818 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 1819 struct vhci_pkt *vpkt; | |
| 1820 int rval; | |
| 1821 int newpkt = 0; | |
| 1822 struct scsi_pkt *pktp; | |
| 1823 | |
| 1824 | |
| 1825 if (pkt == NULL) { | |
| 1826 if (cmdlen > VHCI_SCSI_CDB_SIZE) { | |
| 1827 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 1828 "!init pkt: cdb size not supported\n")); | |
| 1829 return (NULL); | |
| 1830 } | |
| 1831 | |
| 1832 pktp = scsi_hba_pkt_alloc(vhci->vhci_dip, | |
| 1833 ap, cmdlen, statuslen, tgtlen, sizeof (*vpkt), callback, | |
| 1834 arg); | |
| 1835 | |
| 1836 if (pktp == NULL) { | |
| 1837 return (NULL); | |
| 1838 } | |
| 1839 | |
| 1840 /* Get the vhci's private structure */ | |
| 1841 vpkt = (struct vhci_pkt *)(pktp->pkt_ha_private); | |
| 1842 ASSERT(vpkt); | |
| 1843 | |
| 1844 /* Save the target driver's packet */ | |
| 1845 vpkt->vpkt_tgt_pkt = pktp; | |
| 1846 | |
| 1847 /* | |
| 1848 * Save pkt_tgt_init_pkt fields if deferred binding | |
| 1849 * is needed or for other purposes. | |
| 1850 */ | |
| 1851 vpkt->vpkt_tgt_init_pkt_flags = flags; | |
| 1852 vpkt->vpkt_flags = (callback == NULL_FUNC) ? CFLAG_NOWAIT : 0; | |
| 1853 vpkt->vpkt_state = VHCI_PKT_IDLE; | |
| 1854 vpkt->vpkt_tgt_init_cdblen = cmdlen; | |
| 1855 vpkt->vpkt_tgt_init_scblen = statuslen; | |
| 1856 newpkt = 1; | |
| 1857 } else { /* pkt not NULL */ | |
| 1858 vpkt = pkt->pkt_ha_private; | |
| 1859 } | |
| 1860 | |
| 1861 VHCI_DEBUG(8, (CE_NOTE, NULL, "vhci_scsi_init_pkt " | |
| 1862 "vpkt %p flags %x\n", (void *)vpkt, flags)); | |
| 1863 | |
| 1864 /* Clear any stale error flags */ | |
| 1865 if (bp) { | |
| 1866 bioerror(bp, 0); | |
| 1867 } | |
| 1868 | |
| 1869 vpkt->vpkt_tgt_init_bp = bp; | |
| 1870 | |
| 1871 if (flags & PKT_DMA_PARTIAL) { | |
| 1872 | |
| 1873 /* | |
| 1874 * Immediate binding is needed. | |
| 1875 * Target driver may not set this flag in next invocation. | |
| 1876 * vhci has to remember this flag was set during first | |
| 1877 * invocation of vhci_scsi_init_pkt. | |
| 1878 */ | |
| 1879 vpkt->vpkt_flags |= CFLAG_DMA_PARTIAL; | |
| 1880 } | |
| 1881 | |
| 1882 if (vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) { | |
| 1883 | |
| 1884 /* | |
| 1885 * Re-initialize some of the target driver packet state | |
| 1886 * information. | |
| 1887 */ | |
| 1888 vpkt->vpkt_tgt_pkt->pkt_state = 0; | |
| 1889 vpkt->vpkt_tgt_pkt->pkt_statistics = 0; | |
| 1890 vpkt->vpkt_tgt_pkt->pkt_reason = 0; | |
| 1891 | |
| 1892 /* | |
| 1893 * Binding a vpkt->vpkt_path for this IO at init_time. | |
| 1894 * If an IO error happens later, target driver will clear | |
| 1895 * this vpkt->vpkt_path binding before re-init IO again. | |
| 1896 */ | |
| 1897 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1898 "vhci_scsi_init_pkt: calling v_b_t %p, newpkt %d\n", | |
| 1899 (void *)vpkt, newpkt)); | |
| 1900 if (pkt && vpkt->vpkt_hba_pkt) { | |
| 1901 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 1902 "v_s_i_p calling update_pHCI_pkt resid %ld\n", | |
| 1903 pkt->pkt_resid)); | |
| 1904 vhci_update_pHCI_pkt(vpkt, pkt); | |
| 1905 } | |
| 1906 if (callback == SLEEP_FUNC) { | |
| 1907 rval = vhci_bind_transport( | |
| 1908 ap, vpkt, flags, callback); | |
| 1909 } else { | |
| 1910 rval = vhci_bind_transport( | |
| 1911 ap, vpkt, flags, NULL_FUNC); | |
| 1912 } | |
| 1913 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1914 "vhci_scsi_init_pkt: v_b_t called 0x%p rval 0x%x\n", | |
| 1915 (void *)vpkt, rval)); | |
| 1916 if (bp) { | |
| 1917 if (rval == TRAN_FATAL_ERROR) { | |
| 1918 /* | |
| 1919 * No paths available. Could not bind | |
| 1920 * any pHCI. Setting EFAULT as a way | |
| 1921 * to indicate no DMA is mapped. | |
| 1922 */ | |
| 1923 bioerror(bp, EFAULT); | |
| 1924 } else { | |
| 1925 /* | |
| 1926 * Do not indicate any pHCI errors to | |
| 1927 * target driver otherwise. | |
| 1928 */ | |
| 1929 bioerror(bp, 0); | |
| 1930 } | |
| 1931 } | |
| 1932 if (rval != TRAN_ACCEPT) { | |
| 1933 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1934 "vhci_scsi_init_pkt: " | |
| 1935 "v_b_t failed 0x%p newpkt %x\n", | |
| 1936 (void *)vpkt, newpkt)); | |
| 1937 if (newpkt) { | |
| 1938 scsi_hba_pkt_free(ap, | |
| 1939 vpkt->vpkt_tgt_pkt); | |
| 1940 } | |
| 1941 return (NULL); | |
| 1942 } | |
| 1943 ASSERT(vpkt->vpkt_hba_pkt != NULL); | |
| 1944 ASSERT(vpkt->vpkt_path != NULL); | |
| 1945 | |
| 1946 /* Update the resid for the target driver */ | |
| 1947 vpkt->vpkt_tgt_pkt->pkt_resid = | |
| 1948 vpkt->vpkt_hba_pkt->pkt_resid; | |
| 1949 } | |
| 1950 | |
| 1951 return (vpkt->vpkt_tgt_pkt); | |
| 1952 } | |
| 1953 | |
| 1954 /* | |
| 1955 * Function name : vhci_scsi_destroy_pkt | |
| 1956 * | |
| 1957 * Return Values : none | |
| 1958 */ | |
| 1959 static void | |
| 1960 vhci_scsi_destroy_pkt(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1961 { | |
| 1962 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_ha_private; | |
| 1963 | |
| 1964 VHCI_DEBUG(8, (CE_NOTE, NULL, | |
| 1965 "vhci_scsi_destroy_pkt: vpkt 0x%p\n", (void *)vpkt)); | |
| 1966 | |
| 1967 vpkt->vpkt_tgt_init_pkt_flags = 0; | |
| 1968 if (vpkt->vpkt_hba_pkt) { | |
| 1969 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1970 vpkt->vpkt_hba_pkt = NULL; | |
| 1971 } | |
| 1972 if (vpkt->vpkt_path) { | |
| 1973 mdi_rele_path(vpkt->vpkt_path); | |
| 1974 vpkt->vpkt_path = NULL; | |
| 1975 } | |
| 1976 | |
| 1977 ASSERT(vpkt->vpkt_state != VHCI_PKT_ISSUED); | |
| 1978 scsi_hba_pkt_free(ap, vpkt->vpkt_tgt_pkt); | |
| 1979 } | |
| 1980 | |
| 1981 /* | |
| 1982 * Function name : vhci_scsi_dmafree() | |
| 1983 * | |
| 1984 * Return Values : none | |
| 1985 */ | |
| 1986 /*ARGSUSED*/ | |
| 1987 static void | |
| 1988 vhci_scsi_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 1989 { | |
| 1990 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_ha_private; | |
| 1991 | |
| 1992 VHCI_DEBUG(6, (CE_NOTE, NULL, | |
| 1993 "vhci_scsi_dmafree: vpkt 0x%p\n", (void *)vpkt)); | |
| 1994 | |
| 1995 ASSERT(vpkt != NULL); | |
| 1996 if (vpkt->vpkt_hba_pkt) { | |
| 1997 scsi_destroy_pkt(vpkt->vpkt_hba_pkt); | |
| 1998 vpkt->vpkt_hba_pkt = NULL; | |
| 1999 } | |
| 2000 if (vpkt->vpkt_path) { | |
| 2001 mdi_rele_path(vpkt->vpkt_path); | |
| 2002 vpkt->vpkt_path = NULL; | |
| 2003 } | |
| 2004 } | |
| 2005 | |
| 2006 /* | |
| 2007 * Function name : vhci_scsi_sync_pkt() | |
| 2008 * | |
| 2009 * Return Values : none | |
| 2010 */ | |
| 2011 /*ARGSUSED*/ | |
| 2012 static void | |
| 2013 vhci_scsi_sync_pkt(struct scsi_address *ap, struct scsi_pkt *pkt) | |
| 2014 { | |
| 2015 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_ha_private; | |
| 2016 | |
| 2017 ASSERT(vpkt != NULL); | |
| 2018 if (vpkt->vpkt_hba_pkt) { | |
| 2019 scsi_sync_pkt(vpkt->vpkt_hba_pkt); | |
| 2020 } | |
| 2021 } | |
| 2022 | |
| 2023 /* | |
| 2024 * routine for reset notification setup, to register or cancel. | |
| 2025 */ | |
| 2026 static int | |
| 2027 vhci_scsi_reset_notify(struct scsi_address *ap, int flag, | |
|
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2028 void (*callback)(caddr_t), caddr_t arg) |
| 4851 | 2029 { |
| 2030 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 2031 return (scsi_hba_reset_notify_setup(ap, flag, callback, arg, | |
| 2032 &vhci->vhci_mutex, &vhci->vhci_reset_notify_listf)); | |
| 2033 } | |
| 2034 | |
| 2035 static int | |
| 2036 vhci_scsi_get_name_bus_addr(struct scsi_device *sd, | |
| 2037 char *name, int len, int bus_addr) | |
| 2038 { | |
| 2039 dev_info_t *cdip; | |
| 2040 char *guid; | |
| 2041 scsi_vhci_lun_t *vlun; | |
| 2042 | |
| 2043 ASSERT(sd != NULL); | |
| 2044 ASSERT(name != NULL); | |
| 2045 | |
| 2046 cdip = sd->sd_dev; | |
| 2047 | |
| 2048 ASSERT(cdip != NULL); | |
| 2049 | |
| 2050 if (mdi_component_is_client(cdip, NULL) != MDI_SUCCESS) { | |
| 2051 name[0] = '\0'; | |
| 2052 return (1); | |
| 2053 } | |
| 2054 | |
| 2055 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, cdip, PROPFLAGS, | |
| 2056 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 2057 name[0] = '\0'; | |
| 2058 return (1); | |
| 2059 } | |
| 2060 | |
| 2061 vlun = ADDR2VLUN(&sd->sd_address); | |
| 2062 if (bus_addr && vlun && vlun->svl_fops_name) { | |
| 2063 /* report the guid and the name of the failover module */ | |
| 2064 (void) snprintf(name, len, "g%s %s", guid, vlun->svl_fops_name); | |
| 2065 } else { | |
| 2066 /* report the guid */ | |
| 2067 (void) snprintf(name, len, "g%s", guid); | |
| 2068 } | |
| 2069 | |
| 2070 ddi_prop_free(guid); | |
| 2071 return (1); | |
| 2072 } | |
| 2073 | |
| 2074 static int | |
| 2075 vhci_scsi_get_bus_addr(struct scsi_device *sd, char *name, int len) | |
| 2076 { | |
| 2077 return (vhci_scsi_get_name_bus_addr(sd, name, len, 1)); | |
| 2078 } | |
| 2079 | |
| 2080 static int | |
| 2081 vhci_scsi_get_name(struct scsi_device *sd, char *name, int len) | |
| 2082 { | |
| 2083 return (vhci_scsi_get_name_bus_addr(sd, name, len, 0)); | |
| 2084 } | |
| 2085 | |
| 2086 /* | |
| 2087 * Return a pointer to the guid part of the devnm. | |
| 2088 * devnm format is "nodename@busaddr", busaddr format is "gGUID". | |
| 2089 */ | |
| 2090 static char * | |
| 2091 vhci_devnm_to_guid(char *devnm) | |
| 2092 { | |
| 2093 char *cp = devnm; | |
| 2094 | |
| 2095 if (devnm == NULL) | |
| 2096 return (NULL); | |
| 2097 | |
| 2098 while (*cp != '\0' && *cp != '@') | |
| 2099 cp++; | |
| 2100 if (*cp == '@' && *(cp + 1) == 'g') | |
| 2101 return (cp + 2); | |
| 2102 return (NULL); | |
| 2103 } | |
| 2104 | |
| 2105 static int | |
| 2106 vhci_bind_transport(struct scsi_address *ap, struct vhci_pkt *vpkt, int flags, | |
| 2107 int (*func)(caddr_t)) | |
| 2108 { | |
| 2109 struct scsi_vhci *vhci = ADDR2VHCI(ap); | |
| 2110 dev_info_t *cdip = ADDR2DIP(ap); | |
| 2111 mdi_pathinfo_t *pip = NULL; | |
| 2112 mdi_pathinfo_t *npip = NULL; | |
| 2113 scsi_vhci_priv_t *svp = NULL; | |
| 2114 struct scsi_device *psd = NULL; | |
| 2115 struct scsi_address *address = NULL; | |
| 2116 struct scsi_pkt *pkt = NULL; | |
| 2117 int rval = -1; | |
| 2118 int pgr_sema_held = 0; | |
| 2119 int held; | |
| 2120 int mps_flag = MDI_SELECT_ONLINE_PATH; | |
| 2121 struct scsi_vhci_lun *vlun; | |
| 2122 time_t tnow; | |
|
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2123 int path_instance; |
| 4851 | 2124 |
| 2125 vlun = ADDR2VLUN(ap); | |
| 2126 ASSERT(vlun != 0); | |
| 2127 | |
| 2128 if ((vpkt->vpkt_tgt_pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 2129 (((vpkt->vpkt_tgt_pkt->pkt_cdbp[1] & 0x1f) == | |
| 2130 VHCI_PROUT_REGISTER) || | |
| 2131 ((vpkt->vpkt_tgt_pkt->pkt_cdbp[1] & 0x1f) == | |
| 2132 VHCI_PROUT_R_AND_IGNORE))) { | |
| 2133 if (!sema_tryp(&vlun->svl_pgr_sema)) | |
| 2134 return (TRAN_BUSY); | |
| 2135 pgr_sema_held = 1; | |
| 2136 if (vlun->svl_first_path != NULL) { | |
| 2137 rval = mdi_select_path(cdip, NULL, | |
| 2138 MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH, | |
| 2139 NULL, &pip); | |
| 2140 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 2141 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2142 "vhci_bind_transport: path select fail\n")); | |
| 2143 } else { | |
| 2144 npip = pip; | |
| 2145 do { | |
| 2146 if (npip == vlun->svl_first_path) { | |
| 2147 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2148 "vhci_bind_transport: " | |
| 2149 "valid first path 0x%p\n", | |
| 2150 (void *) | |
| 2151 vlun->svl_first_path)); | |
| 2152 pip = vlun->svl_first_path; | |
| 2153 goto bind_path; | |
| 2154 } | |
| 2155 pip = npip; | |
| 2156 rval = mdi_select_path(cdip, NULL, | |
| 2157 MDI_SELECT_ONLINE_PATH | | |
| 2158 MDI_SELECT_STANDBY_PATH, | |
| 2159 pip, &npip); | |
| 2160 mdi_rele_path(pip); | |
| 2161 } while ((rval == MDI_SUCCESS) && | |
| 2162 (npip != NULL)); | |
| 2163 } | |
| 2164 } | |
| 2165 | |
| 2166 if (vlun->svl_first_path) { | |
| 2167 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2168 "vhci_bind_transport: invalid first path 0x%p\n", | |
| 2169 (void *)vlun->svl_first_path)); | |
| 2170 vlun->svl_first_path = NULL; | |
| 2171 } | |
| 2172 } else if (vpkt->vpkt_tgt_pkt->pkt_cdbp[0] == SCMD_PRIN) { | |
| 2173 if ((vpkt->vpkt_state & VHCI_PKT_THRU_TASKQ) == 0) { | |
| 2174 if (!sema_tryp(&vlun->svl_pgr_sema)) | |
| 2175 return (TRAN_BUSY); | |
| 2176 } | |
| 2177 pgr_sema_held = 1; | |
| 2178 } | |
| 2179 | |
| 2180 /* | |
| 2181 * If the path is already bound for PKT_PARTIAL_DMA case, | |
| 2182 * try to use the same path. | |
| 2183 */ | |
| 2184 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) && vpkt->vpkt_path) { | |
| 2185 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2186 "vhci_bind_transport: PKT_PARTIAL_DMA " | |
| 2187 "vpkt 0x%p, path 0x%p\n", | |
| 2188 (void *)vpkt, (void *)vpkt->vpkt_path)); | |
| 2189 pip = vpkt->vpkt_path; | |
| 2190 goto bind_path; | |
| 2191 } | |
| 2192 | |
| 2193 /* | |
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2194 * Get path_instance. Non-zero indicates that mdi_select_path should |
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2195 * be called to select a specific instance. |
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2196 * |
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2197 * NB: Condition pkt_path_instance reference on proper allocation. |
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2198 */ |
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2199 if (scsi_pkt_allocated_correctly(vpkt->vpkt_tgt_pkt)) |
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2200 path_instance = vpkt->vpkt_tgt_pkt->pkt_path_instance; |
|
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2201 else |
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2202 path_instance = 0; |
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2203 |
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|
2204 /* |
| 4851 | 2205 * If reservation is active bind the transport directly to the pip |
| 2206 * with the reservation. | |
| 2207 */ | |
| 2208 if (vpkt->vpkt_hba_pkt == NULL) { | |
| 2209 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 2210 if (MDI_PI_IS_ONLINE(vlun->svl_resrv_pip)) { | |
| 2211 pip = vlun->svl_resrv_pip; | |
| 2212 mdi_hold_path(pip); | |
| 2213 vlun->svl_waiting_for_activepath = 0; | |
| 2214 rval = MDI_SUCCESS; | |
| 2215 goto bind_path; | |
| 2216 } else { | |
| 2217 if (pgr_sema_held) { | |
| 2218 sema_v(&vlun->svl_pgr_sema); | |
| 2219 } | |
| 2220 return (TRAN_BUSY); | |
| 2221 } | |
| 2222 } | |
| 2223 try_again: | |
|
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2224 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, |
|
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2225 path_instance ? MDI_SELECT_PATH_INSTANCE : 0, |
|
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2226 (void *)(intptr_t)path_instance, &pip); |
| 4851 | 2227 if (rval == MDI_BUSY) { |
| 2228 if (pgr_sema_held) { | |
| 2229 sema_v(&vlun->svl_pgr_sema); | |
| 2230 } | |
| 2231 return (TRAN_BUSY); | |
| 2232 } else if (rval == MDI_DEVI_ONLINING) { | |
| 2233 /* | |
| 2234 * if we are here then we are in the midst of | |
| 2235 * an attach/probe of the client device. | |
| 2236 * We attempt to bind to ONLINE path if available, | |
| 2237 * else it is OK to bind to a STANDBY path (instead | |
| 2238 * of triggering a failover) because IO associated | |
| 2239 * with attach/probe (eg. INQUIRY, block 0 read) | |
| 2240 * are completed by targets even on passive paths | |
| 2241 * If no ONLINE paths available, it is important | |
| 2242 * to set svl_waiting_for_activepath for two | |
| 2243 * reasons: (1) avoid sense analysis in the | |
| 2244 * "external failure detection" codepath in | |
| 2245 * vhci_intr(). Failure to do so will result in | |
| 2246 * infinite loop (unless an ONLINE path becomes | |
| 2247 * available at some point) (2) avoid | |
| 2248 * unnecessary failover (see "---Waiting For Active | |
| 2249 * Path---" comment below). | |
| 2250 */ | |
| 2251 VHCI_DEBUG(1, (CE_NOTE, NULL, "!%p in onlining " | |
| 2252 "state\n", (void *)cdip)); | |
| 2253 pip = NULL; | |
| 2254 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, | |
| 2255 mps_flag, NULL, &pip); | |
| 2256 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 2257 if (vlun->svl_waiting_for_activepath == 0) { | |
| 2258 vlun->svl_waiting_for_activepath = 1; | |
| 2259 vlun->svl_wfa_time = ddi_get_time(); | |
| 2260 } | |
| 2261 mps_flag |= MDI_SELECT_STANDBY_PATH; | |
| 2262 rval = mdi_select_path(cdip, | |
| 2263 vpkt->vpkt_tgt_init_bp, | |
| 2264 mps_flag, NULL, &pip); | |
| 2265 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 2266 if (pgr_sema_held) { | |
| 2267 sema_v(&vlun->svl_pgr_sema); | |
| 2268 } | |
| 2269 return (TRAN_FATAL_ERROR); | |
| 2270 } | |
| 2271 goto bind_path; | |
| 2272 } | |
| 2273 } else if (rval == MDI_FAILURE) { | |
| 2274 if (pgr_sema_held) { | |
| 2275 sema_v(&vlun->svl_pgr_sema); | |
| 2276 } | |
| 2277 return (TRAN_FATAL_ERROR); | |
| 2278 } | |
| 2279 | |
| 2280 if ((pip == NULL) || (rval == MDI_NOPATH)) { | |
| 2281 while (vlun->svl_waiting_for_activepath) { | |
| 2282 /* | |
| 2283 * ---Waiting For Active Path--- | |
| 2284 * This device was discovered across a | |
| 2285 * passive path; lets wait for a little | |
| 2286 * bit, hopefully an active path will | |
| 2287 * show up obviating the need for a | |
| 2288 * failover | |
| 2289 */ | |
| 2290 tnow = ddi_get_time(); | |
| 2291 if (tnow - vlun->svl_wfa_time >= 60) { | |
| 2292 vlun->svl_waiting_for_activepath = 0; | |
| 2293 } else { | |
| 2294 drv_usecwait(1000); | |
| 2295 if (vlun->svl_waiting_for_activepath | |
| 2296 == 0) { | |
| 2297 /* | |
| 2298 * an active path has come | |
| 2299 * online! | |
| 2300 */ | |
| 2301 goto try_again; | |
| 2302 } | |
| 2303 } | |
| 2304 } | |
| 2305 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 2306 if (!held) { | |
| 2307 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2308 "!Lun not held\n")); | |
| 2309 if (pgr_sema_held) { | |
| 2310 sema_v(&vlun->svl_pgr_sema); | |
| 2311 } | |
| 2312 return (TRAN_BUSY); | |
| 2313 } | |
| 2314 /* | |
| 2315 * now that the LUN is stable, one last check | |
| 2316 * to make sure no other changes sneaked in | |
| 2317 * (like a path coming online or a | |
| 2318 * failover initiated by another thread) | |
| 2319 */ | |
| 2320 pip = NULL; | |
| 2321 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, | |
| 2322 0, NULL, &pip); | |
| 2323 if (pip != NULL) { | |
| 2324 VHCI_RELEASE_LUN(vlun); | |
| 2325 vlun->svl_waiting_for_activepath = 0; | |
| 2326 goto bind_path; | |
| 2327 } | |
| 2328 | |
| 2329 /* | |
| 2330 * Check if there is an ONLINE path OR a STANDBY path | |
| 2331 * available. If none is available, do not attempt | |
| 2332 * to do a failover, just return a fatal error at this | |
| 2333 * point. | |
| 2334 */ | |
| 2335 npip = NULL; | |
| 2336 rval = mdi_select_path(cdip, NULL, | |
| 2337 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 2338 NULL, &npip); | |
| 2339 if ((npip == NULL) || (rval != MDI_SUCCESS)) { | |
| 2340 /* | |
| 2341 * No paths available, jus return FATAL error. | |
| 2342 */ | |
| 2343 VHCI_RELEASE_LUN(vlun); | |
| 2344 if (pgr_sema_held) { | |
| 2345 sema_v(&vlun->svl_pgr_sema); | |
| 2346 } | |
| 2347 return (TRAN_FATAL_ERROR); | |
| 2348 } | |
| 2349 mdi_rele_path(npip); | |
| 2350 VHCI_DEBUG(1, (CE_NOTE, NULL, "!invoking " | |
| 2351 "mdi_failover\n")); | |
| 2352 rval = mdi_failover(vhci->vhci_dip, cdip, | |
| 2353 MDI_FAILOVER_ASYNC); | |
| 2354 if (rval == MDI_FAILURE) { | |
| 2355 VHCI_RELEASE_LUN(vlun); | |
| 2356 if (pgr_sema_held) { | |
| 2357 sema_v(&vlun->svl_pgr_sema); | |
| 2358 } | |
| 2359 return (TRAN_FATAL_ERROR); | |
| 2360 } else if (rval == MDI_BUSY) { | |
| 2361 VHCI_RELEASE_LUN(vlun); | |
| 2362 if (pgr_sema_held) { | |
| 2363 sema_v(&vlun->svl_pgr_sema); | |
| 2364 } | |
| 2365 return (TRAN_BUSY); | |
| 2366 } else { | |
| 2367 if (pgr_sema_held) { | |
| 2368 sema_v(&vlun->svl_pgr_sema); | |
| 2369 } | |
| 2370 return (TRAN_BUSY); | |
| 2371 } | |
| 2372 } | |
| 2373 vlun->svl_waiting_for_activepath = 0; | |
| 2374 bind_path: | |
| 2375 vpkt->vpkt_path = pip; | |
| 2376 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 2377 ASSERT(svp != NULL); | |
| 2378 | |
| 2379 psd = svp->svp_psd; | |
| 2380 ASSERT(psd != NULL); | |
| 2381 address = &psd->sd_address; | |
| 2382 } else { | |
| 2383 pkt = vpkt->vpkt_hba_pkt; | |
| 2384 address = &pkt->pkt_address; | |
| 2385 } | |
| 2386 | |
|
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2387 /* Verify match of specified path_instance and selected path_instance */ |
|
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2388 ASSERT((path_instance == 0) || |
|
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2389 (path_instance == mdi_pi_get_path_instance(vpkt->vpkt_path))); |
|
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|
2390 |
| 4851 | 2391 /* |
| 2392 * For PKT_PARTIAL_DMA case, call pHCI's scsi_init_pkt whenever | |
| 2393 * target driver calls vhci_scsi_init_pkt. | |
| 2394 */ | |
| 2395 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) && | |
| 2396 vpkt->vpkt_path && vpkt->vpkt_hba_pkt) { | |
| 2397 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2398 "vhci_bind_transport: PKT_PARTIAL_DMA " | |
| 2399 "vpkt 0x%p, path 0x%p hba_pkt 0x%p\n", | |
| 2400 (void *)vpkt, (void *)vpkt->vpkt_path, (void *)pkt)); | |
| 2401 pkt = vpkt->vpkt_hba_pkt; | |
| 2402 address = &pkt->pkt_address; | |
| 2403 } | |
| 2404 | |
| 2405 if (pkt == NULL || (vpkt->vpkt_flags & CFLAG_DMA_PARTIAL)) { | |
| 2406 pkt = scsi_init_pkt(address, pkt, | |
| 2407 vpkt->vpkt_tgt_init_bp, vpkt->vpkt_tgt_init_cdblen, | |
|
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|
2408 vpkt->vpkt_tgt_init_scblen, 0, flags, func, NULL); |
| 4851 | 2409 |
| 2410 if (pkt == NULL) { | |
| 2411 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2412 "!bind transport: 0x%p 0x%p 0x%p\n", | |
| 2413 (void *)vhci, (void *)psd, (void *)vpkt)); | |
| 2414 if ((vpkt->vpkt_hba_pkt == NULL) && vpkt->vpkt_path) { | |
| 2415 MDI_PI_ERRSTAT(vpkt->vpkt_path, | |
| 2416 MDI_PI_TRANSERR); | |
| 2417 mdi_rele_path(vpkt->vpkt_path); | |
| 2418 vpkt->vpkt_path = NULL; | |
| 2419 } | |
| 2420 if (pgr_sema_held) { | |
| 2421 sema_v(&vlun->svl_pgr_sema); | |
| 2422 } | |
| 2423 /* | |
| 2424 * Looks like a fatal error. | |
| 2425 * May be device disappeared underneath. | |
| 2426 * Give another chance to target driver for a retry to | |
| 2427 * get another path. | |
| 2428 */ | |
| 2429 return (TRAN_BUSY); | |
| 2430 } | |
| 2431 } | |
| 2432 | |
| 2433 pkt->pkt_private = vpkt; | |
| 2434 vpkt->vpkt_hba_pkt = pkt; | |
| 2435 return (TRAN_ACCEPT); | |
| 2436 } | |
| 2437 | |
| 2438 | |
| 2439 /*PRINTFLIKE3*/ | |
| 2440 void | |
| 2441 vhci_log(int level, dev_info_t *dip, const char *fmt, ...) | |
| 2442 { | |
| 2443 char buf[256]; | |
| 2444 va_list ap; | |
| 2445 | |
| 2446 va_start(ap, fmt); | |
| 2447 (void) vsprintf(buf, fmt, ap); | |
| 2448 va_end(ap); | |
| 2449 | |
| 2450 scsi_log(dip, "scsi_vhci", level, buf); | |
| 2451 } | |
| 2452 | |
| 2453 /* do a PGR out with the information we've saved away */ | |
| 2454 static int | |
| 2455 vhci_do_prout(scsi_vhci_priv_t *svp) | |
| 2456 { | |
| 2457 | |
| 2458 struct scsi_pkt *new_pkt; | |
| 2459 struct buf *bp; | |
|
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|
2460 scsi_vhci_lun_t *vlun = svp->svp_svl; |
| 4851 | 2461 int rval, retry, nr_retry, ua_retry; |
| 2462 struct scsi_extended_sense *sns; | |
| 2463 | |
| 2464 bp = getrbuf(KM_SLEEP); | |
| 2465 bp->b_flags = B_WRITE; | |
| 2466 bp->b_resid = 0; | |
|
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|
2467 bp->b_un.b_addr = (caddr_t)&vlun->svl_prout; |
|
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|
2468 bp->b_bcount = vlun->svl_bcount; |
| 4851 | 2469 |
| 2470 VHCI_INCR_PATH_CMDCOUNT(svp); | |
| 2471 | |
| 2472 new_pkt = scsi_init_pkt(&svp->svp_psd->sd_address, NULL, bp, | |
| 2473 CDB_GROUP1, sizeof (struct scsi_arq_status), 0, 0, | |
| 2474 SLEEP_FUNC, NULL); | |
| 2475 if (new_pkt == NULL) { | |
| 2476 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2477 freerbuf(bp); | |
| 2478 cmn_err(CE_WARN, "!vhci_do_prout: scsi_init_pkt failed"); | |
| 2479 return (0); | |
| 2480 } | |
| 2481 mutex_enter(&vlun->svl_mutex); | |
| 2482 bp->b_un.b_addr = (caddr_t)&vlun->svl_prout; | |
| 2483 bp->b_bcount = vlun->svl_bcount; | |
| 2484 bcopy(vlun->svl_cdb, new_pkt->pkt_cdbp, | |
| 2485 sizeof (vlun->svl_cdb)); | |
| 2486 new_pkt->pkt_time = vlun->svl_time; | |
| 2487 mutex_exit(&vlun->svl_mutex); | |
| 2488 new_pkt->pkt_flags = FLAG_NOINTR; | |
| 2489 | |
| 2490 ua_retry = nr_retry = retry = 0; | |
| 2491 again: | |
| 2492 rval = vhci_do_scsi_cmd(new_pkt); | |
| 2493 if (rval != 1) { | |
| 2494 if ((new_pkt->pkt_reason == CMD_CMPLT) && | |
| 2495 (SCBP_C(new_pkt) == STATUS_CHECK) && | |
| 2496 (new_pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 2497 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
| 2498 (new_pkt->pkt_scbp))->sts_sensedata); | |
| 2499 if ((sns->es_key == KEY_UNIT_ATTENTION) || | |
| 2500 (sns->es_key == KEY_NOT_READY)) { | |
| 2501 int max_retry; | |
| 2502 struct scsi_failover_ops *fops; | |
| 2503 fops = vlun->svl_fops; | |
|
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|
2504 rval = fops->sfo_analyze_sense(svp->svp_psd, |
|
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|
2505 sns, vlun->svl_fops_ctpriv); |
| 4851 | 2506 if (rval == SCSI_SENSE_NOT_READY) { |
| 2507 max_retry = vhci_prout_not_ready_retry; | |
| 2508 retry = nr_retry++; | |
| 2509 delay(1*drv_usectohz(1000000)); | |
| 2510 } else { | |
| 2511 /* chk for state change and update */ | |
| 2512 if (rval == SCSI_SENSE_STATE_CHANGED) { | |
| 2513 int held; | |
| 2514 VHCI_HOLD_LUN(vlun, | |
| 2515 VH_NOSLEEP, held); | |
| 2516 if (!held) { | |
| 2517 rval = TRAN_BUSY; | |
| 2518 } else { | |
| 2519 /* chk for alua first */ | |
| 2520 vhci_update_pathstates( | |
| 2521 (void *)vlun); | |
| 2522 } | |
| 2523 } | |
| 2524 retry = ua_retry++; | |
| 2525 max_retry = VHCI_MAX_PGR_RETRIES; | |
| 2526 } | |
| 2527 if (retry < max_retry) { | |
| 2528 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 2529 "!vhci_do_prout retry 0x%x " | |
| 2530 "(0x%x 0x%x 0x%x)", | |
| 2531 SCBP_C(new_pkt), | |
| 2532 new_pkt->pkt_cdbp[0], | |
| 2533 new_pkt->pkt_cdbp[1], | |
| 2534 new_pkt->pkt_cdbp[2])); | |
| 2535 goto again; | |
| 2536 } | |
| 2537 rval = 0; | |
| 2538 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 2539 "!vhci_do_prout 0x%x " | |
| 2540 "(0x%x 0x%x 0x%x)", | |
| 2541 SCBP_C(new_pkt), | |
| 2542 new_pkt->pkt_cdbp[0], | |
| 2543 new_pkt->pkt_cdbp[1], | |
| 2544 new_pkt->pkt_cdbp[2])); | |
| 2545 } else if (sns->es_key == KEY_ILLEGAL_REQUEST) | |
| 2546 rval = VHCI_PGR_ILLEGALOP; | |
| 2547 } | |
| 2548 } else { | |
| 2549 rval = 1; | |
| 2550 } | |
| 2551 scsi_destroy_pkt(new_pkt); | |
| 2552 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2553 freerbuf(bp); | |
| 2554 return (rval); | |
| 2555 } | |
| 2556 | |
| 2557 static void | |
| 2558 vhci_run_cmd(void *arg) | |
| 2559 { | |
| 2560 struct scsi_pkt *pkt = (struct scsi_pkt *)arg; | |
| 2561 struct scsi_pkt *tpkt; | |
| 2562 scsi_vhci_priv_t *svp; | |
| 2563 mdi_pathinfo_t *pip, *npip; | |
| 2564 scsi_vhci_lun_t *vlun; | |
| 2565 dev_info_t *cdip; | |
| 2566 scsi_vhci_priv_t *nsvp; | |
| 2567 int fail = 0; | |
| 2568 int rval; | |
| 2569 struct vhci_pkt *vpkt; | |
| 2570 uchar_t cdb_1; | |
| 2571 vhci_prout_t *prout; | |
| 2572 | |
| 2573 vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
| 2574 tpkt = vpkt->vpkt_tgt_pkt; | |
| 2575 pip = vpkt->vpkt_path; | |
| 2576 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 2577 if (svp == NULL) { | |
| 2578 tpkt->pkt_reason = CMD_TRAN_ERR; | |
| 2579 tpkt->pkt_statistics = STAT_ABORTED; | |
| 2580 goto done; | |
| 2581 } | |
| 2582 vlun = svp->svp_svl; | |
| 2583 prout = &vlun->svl_prout; | |
| 2584 if (SCBP_C(pkt) != STATUS_GOOD) | |
| 2585 fail++; | |
| 2586 cdip = vlun->svl_dip; | |
| 2587 pip = npip = NULL; | |
| 2588 rval = mdi_select_path(cdip, NULL, | |
| 2589 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, NULL, &npip); | |
| 2590 if ((rval != MDI_SUCCESS) || (npip == NULL)) { | |
| 2591 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2592 "vhci_run_cmd: no path! 0x%p\n", (void *)svp)); | |
| 2593 tpkt->pkt_reason = CMD_TRAN_ERR; | |
| 2594 tpkt->pkt_statistics = STAT_ABORTED; | |
| 2595 goto done; | |
| 2596 } | |
| 2597 | |
| 2598 cdb_1 = vlun->svl_cdb[1]; | |
| 2599 vlun->svl_cdb[1] &= 0xe0; | |
| 2600 vlun->svl_cdb[1] |= VHCI_PROUT_R_AND_IGNORE; | |
| 2601 | |
| 2602 do { | |
|
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|
2603 nsvp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(npip); |
| 4851 | 2604 if (nsvp == NULL) { |
| 2605 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 2606 "vhci_run_cmd: no " | |
| 2607 "client priv! 0x%p offlined?\n", | |
| 2608 (void *)npip)); | |
| 2609 goto next_path; | |
| 2610 } | |
| 2611 if (vlun->svl_first_path == npip) { | |
| 2612 goto next_path; | |
| 2613 } else { | |
| 2614 if (vhci_do_prout(nsvp) != 1) | |
| 2615 fail++; | |
| 2616 } | |
| 2617 next_path: | |
| 2618 pip = npip; | |
| 2619 rval = mdi_select_path(cdip, NULL, | |
| 2620 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
| 2621 pip, &npip); | |
| 2622 mdi_rele_path(pip); | |
| 2623 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
| 2624 | |
| 2625 vlun->svl_cdb[1] = cdb_1; | |
| 2626 | |
| 2627 if (fail) { | |
| 2628 VHCI_DEBUG(4, (CE_WARN, NULL, "%s%d: key registration failed, " | |
| 2629 "couldn't be replicated on all paths", | |
| 2630 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 2631 vhci_print_prout_keys(vlun, "vhci_run_cmd: "); | |
| 2632 | |
| 2633 if (SCBP_C(pkt) != STATUS_GOOD) { | |
| 2634 tpkt->pkt_reason = CMD_TRAN_ERR; | |
| 2635 tpkt->pkt_statistics = STAT_ABORTED; | |
| 2636 } | |
| 2637 } else { | |
| 2638 vlun->svl_pgr_active = 1; | |
| 2639 vhci_print_prout_keys(vlun, "vhci_run_cmd: before bcopy:"); | |
| 2640 | |
| 2641 bcopy((const void *)prout->service_key, | |
| 2642 (void *)prout->active_service_key, MHIOC_RESV_KEY_SIZE); | |
| 2643 bcopy((const void *)prout->res_key, | |
| 2644 (void *)prout->active_res_key, MHIOC_RESV_KEY_SIZE); | |
| 2645 | |
| 2646 vhci_print_prout_keys(vlun, "vhci_run_cmd: after bcopy:"); | |
| 2647 } | |
| 2648 done: | |
| 2649 if (SCBP_C(pkt) == STATUS_GOOD) | |
| 2650 vlun->svl_first_path = NULL; | |
| 2651 | |
| 2652 if (svp) | |
| 2653 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2654 | |
| 2655 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 2656 scsi_destroy_pkt(pkt); | |
| 2657 vpkt->vpkt_hba_pkt = NULL; | |
| 2658 if (vpkt->vpkt_path) { | |
| 2659 mdi_rele_path(vpkt->vpkt_path); | |
| 2660 vpkt->vpkt_path = NULL; | |
| 2661 } | |
| 2662 } | |
| 2663 | |
| 2664 sema_v(&vlun->svl_pgr_sema); | |
| 2665 /* | |
| 2666 * The PROUT commands are not included in the automatic retry | |
| 2667 * mechanism, therefore, vpkt_org_vpkt should never be set here. | |
| 2668 */ | |
| 2669 ASSERT(vpkt->vpkt_org_vpkt == NULL); | |
| 2670 if (tpkt->pkt_comp) | |
| 2671 (*tpkt->pkt_comp)(tpkt); | |
| 2672 | |
| 2673 } | |
| 2674 | |
| 2675 /* | |
| 2676 * Get the keys registered with this target. Since we will have | |
| 2677 * registered the same key with multiple initiators, strip out | |
| 2678 * any duplicate keys. | |
| 2679 * | |
| 2680 * The pointers which will be used to filter the registered keys from | |
| 2681 * the device will be stored in filter_prin and filter_pkt. If the | |
| 2682 * allocation length of the buffer was sufficient for the number of | |
| 2683 * parameter data bytes available to be returned by the device then the | |
| 2684 * key filtering will use the keylist returned from the original | |
| 2685 * request. If the allocation length of the buffer was not sufficient, | |
| 2686 * then the filtering will use the keylist returned from the request | |
| 2687 * that is resent below. | |
| 2688 * | |
| 2689 * If the device returns an additional length field that is greater than | |
| 2690 * the allocation length of the buffer, then allocate a new buffer which | |
| 2691 * can accommodate the number of parameter data bytes available to be | |
| 2692 * returned. Resend the scsi PRIN command, filter out the duplicate | |
| 2693 * keys and return as many of the unique keys found that was originally | |
| 2694 * requested and set the additional length field equal to the data bytes | |
| 2695 * of unique reservation keys available to be returned. | |
| 2696 * | |
| 2697 * If the device returns an additional length field that is less than or | |
| 2698 * equal to the allocation length of the buffer, then all the available | |
| 2699 * keys registered were returned by the device. Filter out the | |
| 2700 * duplicate keys and return all of the unique keys found and set the | |
| 2701 * additional length field equal to the data bytes of the reservation | |
| 2702 * keys to be returned. | |
| 2703 */ | |
| 2704 static int | |
|
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2705 vhci_do_prin(struct vhci_pkt *vpkt) |
| 4851 | 2706 { |
| 2707 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
|
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2708 mdi_pi_get_vhci_private(vpkt->vpkt_path); |
| 4851 | 2709 vhci_prin_readkeys_t *prin; |
| 2710 scsi_vhci_lun_t *vlun = svp->svp_svl; | |
| 2711 struct scsi_vhci *vhci = | |
|
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2712 ADDR2VHCI(&(vpkt->vpkt_tgt_pkt->pkt_address)); |
| 4851 | 2713 |
| 2714 struct buf *new_bp = NULL; | |
| 2715 struct scsi_pkt *new_pkt = NULL; | |
| 2716 struct vhci_pkt *new_vpkt = NULL; | |
| 2717 int hdr_len = 0; | |
| 2718 int rval = VHCI_CMD_CMPLT; | |
| 2719 uint32_t prin_length = 0; | |
| 2720 uint32_t svl_prin_length = 0; | |
| 2721 | |
| 2722 prin = (vhci_prin_readkeys_t *) | |
|
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2723 bp_mapin_common(vpkt->vpkt_tgt_init_bp, VM_NOSLEEP); |
| 4851 | 2724 |
| 2725 if (prin != NULL) { | |
| 2726 prin_length = BE_32(prin->length); | |
| 2727 } | |
| 2728 | |
| 2729 if (prin == NULL) { | |
| 2730 VHCI_DEBUG(5, (CE_WARN, NULL, | |
| 2731 "vhci_do_prin: bp_mapin_common failed.")); | |
| 2732 rval = VHCI_CMD_ERROR; | |
| 2733 } else { | |
| 2734 /* | |
| 2735 * According to SPC-3r22, sec 4.3.4.6: "If the amount of | |
| 2736 * information to be transferred exceeds the maximum value | |
| 2737 * that the ALLOCATION LENGTH field is capable of specifying, | |
| 2738 * the device server shall...terminate the command with CHECK | |
| 2739 * CONDITION status". The ALLOCATION LENGTH field of the | |
| 2740 * PERSISTENT RESERVE IN command is 2 bytes. We should never | |
| 2741 * get here with an ADDITIONAL LENGTH greater than 0xFFFF | |
| 2742 * so if we do, then it is an error! | |
| 2743 */ | |
| 2744 | |
| 2745 hdr_len = sizeof (prin->length) + sizeof (prin->generation); | |
| 2746 | |
| 2747 if ((prin_length + hdr_len) > 0xFFFF) { | |
| 2748 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2749 "vhci_do_prin: Device returned invalid " | |
| 2750 "length 0x%x\n", prin_length)); | |
| 2751 rval = VHCI_CMD_ERROR; | |
| 2752 } | |
| 2753 } | |
| 2754 | |
| 2755 /* | |
| 2756 * If prin->length is greater than the byte count allocated in the | |
| 2757 * original buffer, then resend the request with enough buffer | |
| 2758 * allocated to get all of the available registered keys. | |
| 2759 */ | |
| 2760 if (rval != VHCI_CMD_ERROR) { | |
|
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2761 if ((vpkt->vpkt_tgt_init_bp->b_bcount - hdr_len) < |
| 4851 | 2762 prin_length) { |
|
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2763 if (vpkt->vpkt_org_vpkt == NULL) { |
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2764 new_pkt = vhci_create_retry_pkt(vpkt); |
| 4851 | 2765 if (new_pkt != NULL) { |
| 2766 new_vpkt = TGTPKT2VHCIPKT(new_pkt); | |
| 2767 | |
| 2768 /* | |
| 2769 * This is the buf with buffer pointer | |
| 2770 * where the prin readkeys will be | |
| 2771 * returned from the device | |
| 2772 */ | |
| 2773 new_bp = scsi_alloc_consistent_buf( | |
| 2774 &svp->svp_psd->sd_address, | |
| 2775 NULL, (prin_length + hdr_len), | |
|
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2776 (vpkt->vpkt_tgt_init_bp-> |
| 4851 | 2777 b_flags & (B_READ | B_WRITE)), |
| 2778 NULL_FUNC, NULL); | |
| 2779 if (new_bp != NULL) { | |
| 2780 if (new_bp->b_un.b_addr != | |
| 2781 NULL) { | |
| 2782 | |
| 2783 new_bp->b_bcount = | |
| 2784 prin_length + | |
| 2785 hdr_len; | |
| 2786 | |
| 2787 new_pkt->pkt_cdbp[7] = | |
| 2788 (uchar_t)(new_bp-> | |
| 2789 b_bcount >> 8); | |
| 2790 new_pkt->pkt_cdbp[8] = | |
| 2791 (uchar_t)new_bp-> | |
| 2792 b_bcount; | |
| 2793 | |
| 2794 rval = VHCI_CMD_RETRY; | |
| 2795 } else { | |
| 2796 rval = VHCI_CMD_ERROR; | |
| 2797 } | |
| 2798 } else { | |
| 2799 rval = VHCI_CMD_ERROR; | |
| 2800 } | |
| 2801 } else { | |
| 2802 rval = VHCI_CMD_ERROR; | |
| 2803 } | |
| 2804 } else { | |
| 2805 rval = VHCI_CMD_ERROR; | |
| 2806 } | |
| 2807 } | |
| 2808 } | |
| 2809 | |
| 2810 if (rval == VHCI_CMD_RETRY) { | |
| 2811 new_vpkt->vpkt_tgt_init_bp = new_bp; | |
| 2812 | |
| 2813 /* | |
| 2814 * Release the old path because it does not matter which path | |
| 2815 * this command is sent down. This allows the normal bind | |
| 2816 * transport mechanism to be used. | |
| 2817 */ | |
|
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2818 if (vpkt->vpkt_path != NULL) { |
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2819 mdi_rele_path(vpkt->vpkt_path); |
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2820 vpkt->vpkt_path = NULL; |
| 4851 | 2821 } |
| 2822 | |
| 2823 /* | |
| 2824 * Dispatch the retry command | |
| 2825 */ | |
| 2826 if (taskq_dispatch(vhci->vhci_taskq, vhci_dispatch_scsi_start, | |
| 2827 (void *) new_vpkt, KM_NOSLEEP) == NULL) { | |
| 2828 rval = VHCI_CMD_ERROR; | |
| 2829 } else { | |
| 2830 /* | |
| 2831 * If we return VHCI_CMD_RETRY, that means the caller | |
| 2832 * is going to bail and wait for the reissued command | |
| 2833 * to complete. In that case, we need to decrement | |
| 2834 * the path command count right now. In any other | |
| 2835 * case, it'll be decremented by the caller. | |
| 2836 */ | |
| 2837 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 2838 } | |
| 2839 } | |
| 2840 | |
| 2841 if ((rval != VHCI_CMD_ERROR) && (rval != VHCI_CMD_RETRY)) { | |
| 2842 int new, old; | |
| 2843 int data_len = 0; | |
| 2844 | |
| 2845 data_len = prin_length / MHIOC_RESV_KEY_SIZE; | |
| 2846 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_do_prin: %d keys read\n", | |
| 2847 data_len)); | |
| 2848 | |
| 2849 #ifdef DEBUG | |
| 2850 VHCI_DEBUG(5, (CE_NOTE, NULL, "vhci_do_prin: from storage\n")); | |
| 2851 if (vhci_debug == 5) | |
| 2852 vhci_print_prin_keys(prin, data_len); | |
| 2853 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2854 "vhci_do_prin: MPxIO old keys:\n")); | |
| 2855 if (vhci_debug == 5) | |
| 2856 vhci_print_prin_keys(&vlun->svl_prin, data_len); | |
| 2857 #endif | |
| 2858 | |
| 2859 /* | |
| 2860 * Filter out all duplicate keys returned from the device | |
| 2861 * We know that we use a different key for every host, so we | |
| 2862 * can simply strip out duplicates. Otherwise we would need to | |
| 2863 * do more bookkeeping to figure out which keys to strip out. | |
| 2864 */ | |
| 2865 | |
| 2866 new = 0; | |
| 2867 | |
| 2868 if (data_len > 0) { | |
| 2869 vlun->svl_prin.keylist[0] = prin->keylist[0]; | |
| 2870 new++; | |
| 2871 } | |
| 2872 | |
| 2873 for (old = 1; old < data_len; old++) { | |
| 2874 int j; | |
| 2875 int match = 0; | |
| 2876 for (j = 0; j < new; j++) { | |
| 2877 if (bcmp(&prin->keylist[old], | |
| 2878 &vlun->svl_prin.keylist[j], | |
| 2879 sizeof (mhioc_resv_key_t)) == 0) { | |
| 2880 match = 1; | |
| 2881 break; | |
| 2882 } | |
| 2883 } | |
| 2884 if (!match) { | |
| 2885 vlun->svl_prin.keylist[new] = | |
| 2886 prin->keylist[old]; | |
| 2887 new++; | |
| 2888 } | |
| 2889 } | |
| 2890 | |
| 2891 vlun->svl_prin.generation = prin->generation; | |
| 2892 svl_prin_length = new * MHIOC_RESV_KEY_SIZE; | |
| 2893 vlun->svl_prin.length = BE_32(svl_prin_length); | |
| 2894 | |
| 2895 /* | |
| 2896 * If we arrived at this point after issuing a retry, make sure | |
| 2897 * that we put everything back the way it originally was so | |
| 2898 * that the target driver can complete the command correctly. | |
| 2899 */ | |
|
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2900 if (vpkt->vpkt_org_vpkt != NULL) { |
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2901 new_bp = vpkt->vpkt_tgt_init_bp; |
| 4851 | 2902 |
| 2903 scsi_free_consistent_buf(new_bp); | |
| 2904 | |
|
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2905 vpkt = vhci_sync_retry_pkt(vpkt); |
| 4851 | 2906 |
| 2907 /* | |
| 2908 * Make sure the original buffer is mapped into kernel | |
| 2909 * space before we try to copy the filtered keys into | |
| 2910 * it. | |
| 2911 */ | |
| 2912 prin = (vhci_prin_readkeys_t *)bp_mapin_common( | |
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2913 vpkt->vpkt_tgt_init_bp, VM_NOSLEEP); |
| 4851 | 2914 } |
| 2915 | |
| 2916 /* | |
| 2917 * Now copy the desired number of prin keys into the original | |
| 2918 * target buffer. | |
| 2919 */ | |
| 2920 if (svl_prin_length <= | |
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2921 (vpkt->vpkt_tgt_init_bp->b_bcount - hdr_len)) { |
| 4851 | 2922 /* |
| 2923 * It is safe to return all of the available unique | |
| 2924 * keys | |
| 2925 */ | |
| 2926 bcopy(&vlun->svl_prin, prin, svl_prin_length + hdr_len); | |
| 2927 } else { | |
| 2928 /* | |
| 2929 * Not all of the available keys were requested by the | |
| 2930 * original command. | |
| 2931 */ | |
| 2932 bcopy(&vlun->svl_prin, prin, | |
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2933 vpkt->vpkt_tgt_init_bp->b_bcount); |
| 4851 | 2934 } |
| 2935 #ifdef DEBUG | |
| 2936 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2937 "vhci_do_prin: To Application:\n")); | |
| 2938 if (vhci_debug == 5) | |
| 2939 vhci_print_prin_keys(prin, new); | |
| 2940 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
| 2941 "vhci_do_prin: MPxIO new keys:\n")); | |
| 2942 if (vhci_debug == 5) | |
| 2943 vhci_print_prin_keys(&vlun->svl_prin, new); | |
| 2944 #endif | |
| 2945 } | |
| 2946 | |
| 2947 if (rval == VHCI_CMD_ERROR) { | |
| 2948 /* | |
| 2949 * If we arrived at this point after issuing a | |
| 2950 * retry, make sure that we put everything back | |
| 2951 * the way it originally was so that ssd can | |
| 2952 * complete the command correctly. | |
| 2953 */ | |
| 2954 | |
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2955 if (vpkt->vpkt_org_vpkt != NULL) { |
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2956 new_bp = vpkt->vpkt_tgt_init_bp; |
| 4851 | 2957 if (new_bp != NULL) { |
| 2958 scsi_free_consistent_buf(new_bp); | |
| 2959 } | |
| 2960 | |
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2961 new_vpkt = vpkt; |
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2962 vpkt = vpkt->vpkt_org_vpkt; |
| 4851 | 2963 |
| 2964 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 2965 new_vpkt->vpkt_tgt_pkt); | |
| 2966 } | |
| 2967 | |
| 2968 /* | |
| 2969 * Mark this command completion as having an error so that | |
| 2970 * ssd will retry the command. | |
| 2971 */ | |
| 2972 | |
|
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2973 vpkt->vpkt_tgt_pkt->pkt_reason = CMD_ABORTED; |
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2974 vpkt->vpkt_tgt_pkt->pkt_statistics |= STAT_ABORTED; |
| 4851 | 2975 |
| 2976 rval = VHCI_CMD_CMPLT; | |
| 2977 } | |
| 2978 | |
| 2979 /* | |
| 2980 * Make sure that the semaphore is only released once. | |
| 2981 */ | |
| 2982 if (rval == VHCI_CMD_CMPLT) { | |
| 2983 sema_v(&vlun->svl_pgr_sema); | |
| 2984 } | |
| 2985 | |
| 2986 return (rval); | |
| 2987 } | |
| 2988 | |
| 2989 static void | |
| 2990 vhci_intr(struct scsi_pkt *pkt) | |
| 2991 { | |
| 2992 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
| 2993 struct scsi_pkt *tpkt; | |
| 2994 scsi_vhci_priv_t *svp; | |
| 2995 scsi_vhci_lun_t *vlun; | |
| 2996 int rval, held; | |
| 2997 struct scsi_failover_ops *fops; | |
| 2998 struct scsi_extended_sense *sns; | |
| 2999 mdi_pathinfo_t *lpath; | |
| 3000 static char *timeout_err = "Command Timeout"; | |
| 3001 static char *parity_err = "Parity Error"; | |
| 3002 char *err_str = NULL; | |
| 3003 dev_info_t *vdip, *cdip, *pdip; | |
| 3004 char *cpath, *dpath; | |
| 3005 | |
| 3006 ASSERT(vpkt != NULL); | |
| 3007 tpkt = vpkt->vpkt_tgt_pkt; | |
| 3008 ASSERT(tpkt != NULL); | |
| 3009 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 3010 ASSERT(svp != NULL); | |
| 3011 vlun = svp->svp_svl; | |
| 3012 ASSERT(vlun != NULL); | |
| 3013 lpath = vpkt->vpkt_path; | |
| 3014 | |
| 3015 /* | |
| 3016 * sync up the target driver's pkt with the pkt that | |
| 3017 * we actually used | |
| 3018 */ | |
| 3019 *(tpkt->pkt_scbp) = *(pkt->pkt_scbp); | |
| 3020 tpkt->pkt_resid = pkt->pkt_resid; | |
| 3021 tpkt->pkt_state = pkt->pkt_state; | |
| 3022 tpkt->pkt_statistics = pkt->pkt_statistics; | |
| 3023 tpkt->pkt_reason = pkt->pkt_reason; | |
| 3024 | |
|
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3025 /* Return path_instance information back to the target driver. */ |
|
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3026 if (scsi_pkt_allocated_correctly(tpkt)) { |
|
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3027 if (scsi_pkt_allocated_correctly(pkt)) { |
|
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3028 /* |
|
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|
3029 * If both packets were correctly allocated, |
|
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|
3030 * return path returned by pHCI. |
|
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|
3031 */ |
|
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|
3032 tpkt->pkt_path_instance = pkt->pkt_path_instance; |
|
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3033 } else { |
|
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3034 /* Otherwise return path of pHCI we used */ |
|
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3035 tpkt->pkt_path_instance = |
|
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3036 mdi_pi_get_path_instance(lpath); |
|
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|
3037 } |
|
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|
3038 } |
|
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|
3039 |
| 4851 | 3040 if (pkt->pkt_cdbp[0] == SCMD_PROUT && |
| 3041 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
| 3042 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE)) { | |
| 3043 if ((SCBP_C(pkt) != STATUS_GOOD) || | |
| 3044 (pkt->pkt_reason != CMD_CMPLT)) { | |
| 3045 sema_v(&vlun->svl_pgr_sema); | |
| 3046 } | |
| 3047 } else if (pkt->pkt_cdbp[0] == SCMD_PRIN) { | |
| 3048 if (pkt->pkt_reason != CMD_CMPLT || | |
| 3049 (SCBP_C(pkt) != STATUS_GOOD)) { | |
| 3050 sema_v(&vlun->svl_pgr_sema); | |
| 3051 } | |
| 3052 } | |
| 3053 | |
| 3054 switch (pkt->pkt_reason) { | |
| 3055 case CMD_CMPLT: | |
| 3056 /* | |
| 3057 * cmd completed successfully, check for scsi errors | |
| 3058 */ | |
| 3059 switch (*(pkt->pkt_scbp)) { | |
| 3060 case STATUS_CHECK: | |
| 3061 if (pkt->pkt_state & STATE_ARQ_DONE) { | |
| 3062 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
| 3063 (pkt->pkt_scbp))->sts_sensedata); | |
| 3064 fops = vlun->svl_fops; | |
| 3065 ASSERT(fops != NULL); | |
| 3066 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_intr: " | |
| 3067 "Received sns key %x esc %x escq %x\n", | |
| 3068 sns->es_key, sns->es_add_code, | |
| 3069 sns->es_qual_code)); | |
| 3070 | |
| 3071 if (vlun->svl_waiting_for_activepath == 1) { | |
| 3072 /* | |
| 3073 * if we are here it means we are | |
| 3074 * in the midst of a probe/attach | |
| 3075 * through a passive path; this | |
| 3076 * case is exempt from sense analysis | |
| 3077 * for detection of ext. failover | |
| 3078 * because that would unnecessarily | |
| 3079 * increase attach time. | |
| 3080 */ | |
| 3081 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 3082 vpkt->vpkt_tgt_init_scblen); | |
| 3083 break; | |
| 3084 } | |
| 3085 if (sns->es_add_code == VHCI_SCSI_PERR) { | |
| 3086 /* | |
| 3087 * parity error | |
| 3088 */ | |
| 3089 err_str = parity_err; | |
| 3090 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 3091 vpkt->vpkt_tgt_init_scblen); | |
| 3092 break; | |
| 3093 } | |
|
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|
3094 rval = fops->sfo_analyze_sense(svp->svp_psd, |
|
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|
3095 sns, vlun->svl_fops_ctpriv); |
| 4851 | 3096 if ((rval == SCSI_SENSE_NOFAILOVER) || |
| 3097 (rval == SCSI_SENSE_UNKNOWN) || | |
| 3098 (rval == SCSI_SENSE_NOT_READY)) { | |
| 3099 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
| 3100 vpkt->vpkt_tgt_init_scblen); | |
| 3101 break; | |
| 3102 } else if (rval == SCSI_SENSE_STATE_CHANGED) { | |
| 3103 struct scsi_vhci *vhci; | |
| 3104 vhci = ADDR2VHCI(&tpkt->pkt_address); | |
| 3105 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 3106 if (!held) { | |
| 3107 /* | |
| 3108 * looks like some other thread | |
| 3109 * has already detected this | |
| 3110 * condition | |
| 3111 */ | |
| 3112 tpkt->pkt_state &= | |
| 3113 ~STATE_ARQ_DONE; | |
| 3114 *(tpkt->pkt_scbp) = | |
| 3115 STATUS_BUSY; | |
| 3116 break; | |
| 3117 } | |
| 3118 (void) taskq_dispatch( | |
| 3119 vhci->vhci_update_pathstates_taskq, | |
| 3120 vhci_update_pathstates, | |
| 3121 (void *)vlun, KM_SLEEP); | |
| 3122 } else { | |
| 3123 /* | |
| 3124 * externally initiated failover | |
| 3125 * has occurred or is in progress | |
| 3126 */ | |
| 3127 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
| 3128 if (!held) { | |
| 3129 /* | |
| 3130 * looks like some other thread | |
| 3131 * has already detected this | |
| 3132 * condition | |
| 3133 */ | |
| 3134 tpkt->pkt_state &= | |
| 3135 ~STATE_ARQ_DONE; | |
| 3136 *(tpkt->pkt_scbp) = | |
| 3137 STATUS_BUSY; | |
| 3138 break; | |
| 3139 } else { | |
| 3140 rval = vhci_handle_ext_fo | |
| 3141 (pkt, rval); | |
| 3142 if (rval == BUSY_RETURN) { | |
| 3143 tpkt->pkt_state &= | |
| 3144 ~STATE_ARQ_DONE; | |
| 3145 *(tpkt->pkt_scbp) = | |
| 3146 STATUS_BUSY; | |
| 3147 break; | |
| 3148 } | |
| 3149 bcopy(pkt->pkt_scbp, | |
| 3150 tpkt->pkt_scbp, | |
| 3151 vpkt->vpkt_tgt_init_scblen); | |
| 3152 break; | |
| 3153 } | |
| 3154 } | |
| 3155 } | |
| 3156 break; | |
| 3157 | |
| 3158 /* | |
| 3159 * If this is a good SCSI-II RELEASE cmd completion then restore | |
| 3160 * the load balancing policy and reset VLUN_RESERVE_ACTIVE_FLG. | |
| 3161 * If this is a good SCSI-II RESERVE cmd completion then set | |
| 3162 * VLUN_RESERVE_ACTIVE_FLG. | |
| 3163 */ | |
| 3164 case STATUS_GOOD: | |
| 3165 if ((pkt->pkt_cdbp[0] == SCMD_RELEASE) || | |
| 3166 (pkt->pkt_cdbp[0] == SCMD_RELEASE_G1)) { | |
| 3167 (void) mdi_set_lb_policy(vlun->svl_dip, | |
| 3168 vlun->svl_lb_policy_save); | |
| 3169 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 3170 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3171 "!vhci_intr: vlun 0x%p release path 0x%p", | |
| 3172 (void *)vlun, (void *)vpkt->vpkt_path)); | |
| 3173 } | |
| 3174 | |
| 3175 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 3176 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 3177 vlun->svl_flags |= VLUN_RESERVE_ACTIVE_FLG; | |
| 3178 vlun->svl_resrv_pip = vpkt->vpkt_path; | |
| 3179 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3180 "!vhci_intr: vlun 0x%p reserved path 0x%p", | |
| 3181 (void *)vlun, (void *)vpkt->vpkt_path)); | |
| 3182 } | |
| 3183 break; | |
| 3184 | |
| 3185 case STATUS_RESERVATION_CONFLICT: | |
| 3186 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3187 "!vhci_intr: vlun 0x%p " | |
| 3188 "reserve conflict on path 0x%p", | |
| 3189 (void *)vlun, (void *)vpkt->vpkt_path)); | |
| 3190 /* FALLTHROUGH */ | |
| 3191 default: | |
| 3192 break; | |
| 3193 } | |
| 3194 | |
| 3195 /* | |
| 3196 * Update I/O completion statistics for the path | |
| 3197 */ | |
| 3198 mdi_pi_kstat_iosupdate(vpkt->vpkt_path, vpkt->vpkt_tgt_init_bp); | |
| 3199 | |
| 3200 /* | |
| 3201 * Command completed successfully, release the dma binding and | |
| 3202 * destroy the transport side of the packet. | |
| 3203 */ | |
| 3204 if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
| 3205 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
|
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|
3206 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE))) { |
| 4851 | 3207 if (SCBP_C(pkt) == STATUS_GOOD) { |
| 3208 ASSERT(vlun->svl_taskq); | |
| 3209 svp->svp_last_pkt_reason = pkt->pkt_reason; | |
| 3210 (void) taskq_dispatch(vlun->svl_taskq, | |
| 3211 vhci_run_cmd, pkt, KM_SLEEP); | |
| 3212 return; | |
| 3213 } | |
| 3214 } | |
| 3215 if ((SCBP_C(pkt) == STATUS_GOOD) && | |
|
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|
3216 (pkt->pkt_cdbp[0] == SCMD_PRIN) && vpkt->vpkt_tgt_init_bp) { |
| 4851 | 3217 /* |
| 3218 * If the action (value in byte 1 of the cdb) is zero, | |
| 3219 * we're reading keys, and that's the only condition | |
| 3220 * where we need to be concerned with filtering keys | |
| 3221 * and potential retries. Otherwise, we simply signal | |
| 3222 * the semaphore and move on. | |
| 3223 */ | |
| 3224 if (pkt->pkt_cdbp[1] == 0) { | |
| 3225 /* | |
| 3226 * If this is the completion of an internal | |
| 3227 * retry then we need to make sure that the | |
| 3228 * pkt and tpkt pointers are readjusted so | |
| 3229 * the calls to scsi_destroy_pkt and pkt_comp | |
| 3230 * below work * correctly. | |
| 3231 */ | |
| 3232 if (vpkt->vpkt_org_vpkt != NULL) { | |
| 3233 pkt = vpkt->vpkt_org_vpkt->vpkt_hba_pkt; | |
| 3234 tpkt = vpkt->vpkt_org_vpkt-> | |
| 3235 vpkt_tgt_pkt; | |
| 3236 | |
| 3237 /* | |
| 3238 * If this command was issued through | |
| 3239 * the taskq then we need to clear | |
| 3240 * this flag for proper processing in | |
| 3241 * the case of a retry from the target | |
| 3242 * driver. | |
| 3243 */ | |
| 3244 vpkt->vpkt_state &= | |
| 3245 ~VHCI_PKT_THRU_TASKQ; | |
| 3246 } | |
| 3247 | |
| 3248 /* | |
| 3249 * if vhci_do_prin returns VHCI_CMD_CMPLT then | |
| 3250 * vpkt will contain the address of the | |
| 3251 * original vpkt | |
| 3252 */ | |
|
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|
3253 if (vhci_do_prin(vpkt) == VHCI_CMD_RETRY) { |
| 4851 | 3254 /* |
| 3255 * The command has been resent to get | |
| 3256 * all the keys from the device. Don't | |
| 3257 * complete the command with ssd until | |
| 3258 * the retry completes. | |
| 3259 */ | |
| 3260 return; | |
| 3261 } | |
| 3262 } else { | |
| 3263 sema_v(&vlun->svl_pgr_sema); | |
| 3264 } | |
| 3265 } | |
| 3266 | |
| 3267 break; | |
| 3268 | |
| 3269 case CMD_TIMEOUT: | |
| 3270 if ((pkt->pkt_statistics & | |
| 3271 (STAT_BUS_RESET|STAT_DEV_RESET|STAT_ABORTED)) == 0) { | |
| 3272 | |
| 3273 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3274 "!scsi vhci timeout invoked\n")); | |
| 3275 | |
| 3276 (void) vhci_recovery_reset(vlun, &pkt->pkt_address, | |
| 3277 FALSE, VHCI_DEPTH_ALL); | |
| 3278 } | |
| 3279 MDI_PI_ERRSTAT(lpath, MDI_PI_TRANSERR); | |
| 3280 tpkt->pkt_statistics |= STAT_ABORTED; | |
| 3281 err_str = timeout_err; | |
| 3282 break; | |
| 3283 | |
| 3284 case CMD_TRAN_ERR: | |
| 3285 /* | |
| 3286 * This status is returned if the transport has sent the cmd | |
| 3287 * down the link to the target and then some error occurs. | |
| 3288 * In case of SCSI-II RESERVE cmd, we don't know if the | |
| 3289 * reservation been accepted by the target or not, so we need | |
| 3290 * to clear the reservation. | |
| 3291 */ | |
| 3292 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 3293 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 3294 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_intr received" | |
| 3295 " cmd_tran_err for scsi-2 reserve cmd\n")); | |
| 3296 if (!vhci_recovery_reset(vlun, &pkt->pkt_address, | |
| 3297 TRUE, VHCI_DEPTH_TARGET)) { | |
| 3298 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3299 "!vhci_intr cmd_tran_err reset failed!")); | |
| 3300 } | |
| 3301 } | |
| 3302 break; | |
| 3303 | |
| 3304 case CMD_DEV_GONE: | |
|
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|
3305 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_intr received " |
|
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|
3306 "cmd_dev_gone\n")); |
| 4851 | 3307 tpkt->pkt_reason = CMD_CMPLT; |
| 3308 tpkt->pkt_state = STATE_GOT_BUS | | |
| 3309 STATE_GOT_TARGET | STATE_SENT_CMD | | |
| 3310 STATE_GOT_STATUS; | |
| 3311 *(tpkt->pkt_scbp) = STATUS_BUSY; | |
| 3312 break; | |
| 3313 | |
| 3314 default: | |
| 3315 break; | |
| 3316 } | |
| 3317 | |
| 3318 /* | |
| 3319 * SCSI-II RESERVE cmd has been serviced by the lower layers clear | |
| 3320 * the flag so the lun is not QUIESCED any longer. | |
| 3321 * Also clear the VHCI_PKT_THRU_TASKQ flag, to ensure that if this pkt | |
| 3322 * is retried, a taskq shall again be dispatched to service it. Else | |
| 3323 * it may lead to a system hang if the retry is within interrupt | |
| 3324 * context. | |
| 3325 */ | |
| 3326 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
| 3327 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
| 3328 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
| 3329 vpkt->vpkt_state &= ~VHCI_PKT_THRU_TASKQ; | |
| 3330 } | |
| 3331 | |
| 3332 /* | |
| 3333 * vpkt_org_vpkt should always be NULL here if the retry command | |
| 3334 * has been successfully processed. If vpkt_org_vpkt != NULL at | |
| 3335 * this point, it is an error so restore the original vpkt and | |
| 3336 * return an error to the target driver so it can retry the | |
| 3337 * command as appropriate. | |
| 3338 */ | |
| 3339 if (vpkt->vpkt_org_vpkt != NULL) { | |
| 3340 struct vhci_pkt *new_vpkt = vpkt; | |
| 3341 vpkt = vpkt->vpkt_org_vpkt; | |
| 3342 | |
| 3343 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 3344 new_vpkt->vpkt_tgt_pkt); | |
| 3345 | |
| 3346 /* | |
| 3347 * Mark this command completion as having an error so that | |
| 3348 * ssd will retry the command. | |
| 3349 */ | |
| 3350 vpkt->vpkt_tgt_pkt->pkt_reason = CMD_ABORTED; | |
| 3351 vpkt->vpkt_tgt_pkt->pkt_statistics |= STAT_ABORTED; | |
| 3352 | |
| 3353 pkt = vpkt->vpkt_hba_pkt; | |
| 3354 tpkt = vpkt->vpkt_tgt_pkt; | |
| 3355 } | |
| 3356 | |
| 3357 if ((err_str != NULL) && (pkt->pkt_reason != | |
| 3358 svp->svp_last_pkt_reason)) { | |
| 3359 cdip = vlun->svl_dip; | |
| 3360 pdip = mdi_pi_get_phci(vpkt->vpkt_path); | |
| 3361 vdip = ddi_get_parent(cdip); | |
| 3362 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3363 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3364 vhci_log(CE_WARN, vdip, "!%s (%s%d): %s on path %s (%s%d)", | |
| 3365 ddi_pathname(cdip, cpath), ddi_driver_name(cdip), | |
| 3366 ddi_get_instance(cdip), err_str, | |
| 3367 ddi_pathname(pdip, dpath), ddi_driver_name(pdip), | |
| 3368 ddi_get_instance(pdip)); | |
| 3369 kmem_free(cpath, MAXPATHLEN); | |
| 3370 kmem_free(dpath, MAXPATHLEN); | |
| 3371 } | |
| 3372 svp->svp_last_pkt_reason = pkt->pkt_reason; | |
| 3373 VHCI_DECR_PATH_CMDCOUNT(svp); | |
| 3374 | |
| 3375 /* | |
| 3376 * For PARTIAL_DMA, vhci should not free the path. | |
| 3377 * Target driver will call into vhci_scsi_dmafree or | |
| 3378 * destroy pkt to release this path. | |
| 3379 */ | |
| 3380 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
| 3381 scsi_destroy_pkt(pkt); | |
| 3382 vpkt->vpkt_hba_pkt = NULL; | |
| 3383 if (vpkt->vpkt_path) { | |
| 3384 mdi_rele_path(vpkt->vpkt_path); | |
| 3385 vpkt->vpkt_path = NULL; | |
| 3386 } | |
| 3387 } | |
| 3388 | |
| 3389 if (tpkt->pkt_comp) { | |
| 3390 (*tpkt->pkt_comp)(tpkt); | |
| 3391 } | |
| 3392 } | |
| 3393 | |
| 3394 /* | |
| 3395 * two possibilities: (1) failover has completed | |
| 3396 * or (2) is in progress; update our path states for | |
| 3397 * the former case; for the latter case, | |
| 3398 * initiate a scsi_watch request to | |
| 3399 * determine when failover completes - vlun is HELD | |
| 3400 * until failover completes; BUSY is returned to upper | |
| 3401 * layer in both the cases | |
| 3402 */ | |
| 3403 static int | |
| 3404 vhci_handle_ext_fo(struct scsi_pkt *pkt, int fostat) | |
| 3405 { | |
| 3406 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
| 3407 struct scsi_pkt *tpkt; | |
| 3408 scsi_vhci_priv_t *svp; | |
| 3409 scsi_vhci_lun_t *vlun; | |
| 3410 struct scsi_vhci *vhci; | |
| 3411 scsi_vhci_swarg_t *swarg; | |
| 3412 char *path; | |
| 3413 | |
| 3414 ASSERT(vpkt != NULL); | |
| 3415 tpkt = vpkt->vpkt_tgt_pkt; | |
| 3416 ASSERT(tpkt != NULL); | |
| 3417 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 3418 ASSERT(svp != NULL); | |
| 3419 vlun = svp->svp_svl; | |
| 3420 ASSERT(vlun != NULL); | |
| 3421 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 3422 | |
| 3423 vhci = ADDR2VHCI(&tpkt->pkt_address); | |
| 3424 | |
| 3425 if (fostat == SCSI_SENSE_INACTIVE) { | |
| 3426 VHCI_DEBUG(1, (CE_NOTE, NULL, "!Failover " | |
| 3427 "detected for %s; updating path states...\n", | |
| 3428 vlun->svl_lun_wwn)); | |
| 3429 /* | |
| 3430 * set the vlun flag to indicate to the task that the target | |
| 3431 * port group needs updating | |
| 3432 */ | |
| 3433 vlun->svl_flags |= VLUN_UPDATE_TPG; | |
| 3434 (void) taskq_dispatch(vhci->vhci_update_pathstates_taskq, | |
| 3435 vhci_update_pathstates, (void *)vlun, KM_SLEEP); | |
| 3436 } else { | |
| 3437 path = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3438 vhci_log(CE_NOTE, ddi_get_parent(vlun->svl_dip), | |
| 3439 "!%s (%s%d): Waiting for externally initiated failover " | |
| 3440 "to complete", ddi_pathname(vlun->svl_dip, path), | |
| 3441 ddi_driver_name(vlun->svl_dip), | |
| 3442 ddi_get_instance(vlun->svl_dip)); | |
| 3443 kmem_free(path, MAXPATHLEN); | |
| 3444 swarg = kmem_alloc(sizeof (*swarg), KM_NOSLEEP); | |
| 3445 if (swarg == NULL) { | |
| 3446 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_handle_ext_fo: " | |
| 3447 "request packet allocation for %s failed....\n", | |
| 3448 vlun->svl_lun_wwn)); | |
| 3449 VHCI_RELEASE_LUN(vlun); | |
| 3450 return (PKT_RETURN); | |
| 3451 } | |
| 3452 swarg->svs_svp = svp; | |
| 3453 swarg->svs_tos = ddi_get_time(); | |
| 3454 swarg->svs_pi = vpkt->vpkt_path; | |
| 3455 swarg->svs_release_lun = 0; | |
| 3456 swarg->svs_done = 0; | |
| 3457 /* | |
| 3458 * place a hold on the path...we don't want it to | |
| 3459 * vanish while scsi_watch is in progress | |
| 3460 */ | |
| 3461 mdi_hold_path(vpkt->vpkt_path); | |
| 3462 svp->svp_sw_token = scsi_watch_request_submit(svp->svp_psd, | |
| 3463 VHCI_FOWATCH_INTERVAL, SENSE_LENGTH, vhci_efo_watch_cb, | |
| 3464 (caddr_t)swarg); | |
| 3465 } | |
| 3466 return (BUSY_RETURN); | |
| 3467 } | |
| 3468 | |
| 3469 /* | |
| 3470 * vhci_efo_watch_cb: | |
| 3471 * Callback from scsi_watch request to check the failover status. | |
| 3472 * Completion is either due to successful failover or timeout. | |
| 3473 * Upon successful completion, vhci_update_path_states is called. | |
| 3474 * For timeout condition, vhci_efo_done is called. | |
| 3475 * Always returns 0 to scsi_watch to keep retrying till vhci_efo_done | |
| 3476 * terminates this request properly in a separate thread. | |
| 3477 */ | |
| 3478 | |
| 3479 static int | |
| 3480 vhci_efo_watch_cb(caddr_t arg, struct scsi_watch_result *resultp) | |
| 3481 { | |
| 3482 struct scsi_status *statusp = resultp->statusp; | |
| 3483 struct scsi_extended_sense *sensep = resultp->sensep; | |
| 3484 struct scsi_pkt *pkt = resultp->pkt; | |
| 3485 scsi_vhci_swarg_t *swarg; | |
| 3486 scsi_vhci_priv_t *svp; | |
| 3487 scsi_vhci_lun_t *vlun; | |
| 3488 struct scsi_vhci *vhci; | |
| 3489 dev_info_t *vdip; | |
| 3490 int rval, updt_paths; | |
| 3491 | |
| 3492 swarg = (scsi_vhci_swarg_t *)(uintptr_t)arg; | |
| 3493 svp = swarg->svs_svp; | |
| 3494 if (swarg->svs_done) { | |
| 3495 /* | |
| 3496 * Already completed failover or timedout. | |
| 3497 * Waiting for vhci_efo_done to terminate this scsi_watch. | |
| 3498 */ | |
| 3499 return (0); | |
| 3500 } | |
| 3501 | |
| 3502 ASSERT(svp != NULL); | |
| 3503 vlun = svp->svp_svl; | |
| 3504 ASSERT(vlun != NULL); | |
| 3505 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 3506 vlun->svl_efo_update_path = 0; | |
| 3507 vdip = ddi_get_parent(vlun->svl_dip); | |
| 3508 vhci = ddi_get_soft_state(vhci_softstate, | |
| 3509 ddi_get_instance(vdip)); | |
| 3510 | |
| 3511 updt_paths = 0; | |
| 3512 | |
| 3513 if (pkt->pkt_reason != CMD_CMPLT) { | |
| 3514 if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) { | |
| 3515 swarg->svs_release_lun = 1; | |
| 3516 goto done; | |
| 3517 } | |
| 3518 return (0); | |
| 3519 } | |
| 3520 if (*((unsigned char *)statusp) == STATUS_CHECK) { | |
|
6941
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6777
diff
changeset
|
3521 rval = vlun->svl_fops->sfo_analyze_sense(svp->svp_psd, sensep, |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
3522 vlun->svl_fops_ctpriv); |
| 4851 | 3523 switch (rval) { |
| 3524 /* | |
| 3525 * Only update path states in case path is definitely | |
| 3526 * inactive, or no failover occurred. For all other | |
| 3527 * check conditions continue pinging. A unexpected | |
| 3528 * check condition shouldn't cause pinging to complete | |
| 3529 * prematurely. | |
| 3530 */ | |
| 3531 case SCSI_SENSE_INACTIVE: | |
| 3532 case SCSI_SENSE_NOFAILOVER: | |
| 3533 updt_paths = 1; | |
| 3534 break; | |
| 3535 default: | |
| 3536 if ((ddi_get_time() - swarg->svs_tos) | |
| 3537 >= VHCI_EXTFO_TIMEOUT) { | |
| 3538 swarg->svs_release_lun = 1; | |
| 3539 goto done; | |
| 3540 } | |
| 3541 return (0); | |
| 3542 } | |
| 3543 } else if (*((unsigned char *)statusp) == | |
| 3544 STATUS_RESERVATION_CONFLICT) { | |
| 3545 updt_paths = 1; | |
| 3546 } else if ((*((unsigned char *)statusp)) & | |
| 3547 (STATUS_BUSY | STATUS_QFULL)) { | |
| 3548 return (0); | |
| 3549 } | |
| 3550 if ((*((unsigned char *)statusp) == STATUS_GOOD) || | |
| 3551 (updt_paths == 1)) { | |
| 3552 /* | |
| 3553 * we got here because we had detected an | |
| 3554 * externally initiated failover; things | |
| 3555 * have settled down now, so let's | |
| 3556 * start up a task to update the | |
| 3557 * path states and target port group | |
| 3558 */ | |
| 3559 vlun->svl_efo_update_path = 1; | |
| 3560 swarg->svs_done = 1; | |
| 3561 vlun->svl_swarg = swarg; | |
| 3562 vlun->svl_flags |= VLUN_UPDATE_TPG; | |
| 3563 (void) taskq_dispatch(vhci->vhci_update_pathstates_taskq, | |
| 3564 vhci_update_pathstates, (void *)vlun, | |
| 3565 KM_SLEEP); | |
| 3566 return (0); | |
| 3567 } | |
| 3568 if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) { | |
| 3569 swarg->svs_release_lun = 1; | |
| 3570 goto done; | |
| 3571 } | |
| 3572 return (0); | |
| 3573 done: | |
| 3574 swarg->svs_done = 1; | |
| 3575 (void) taskq_dispatch(vhci->vhci_taskq, | |
| 3576 vhci_efo_done, (void *)swarg, KM_SLEEP); | |
| 3577 return (0); | |
| 3578 } | |
| 3579 | |
| 3580 /* | |
| 3581 * vhci_efo_done: | |
| 3582 * cleanly terminates scsi_watch and free up resources. | |
| 3583 * Called as taskq function in vhci_efo_watch_cb for EFO timeout condition | |
| 3584 * or by vhci_update_path_states invoked during external initiated | |
| 3585 * failover completion. | |
| 3586 */ | |
| 3587 static void | |
| 3588 vhci_efo_done(void *arg) | |
| 3589 { | |
| 3590 scsi_vhci_lun_t *vlun; | |
| 3591 scsi_vhci_swarg_t *swarg = (scsi_vhci_swarg_t *)arg; | |
| 3592 scsi_vhci_priv_t *svp = swarg->svs_svp; | |
| 3593 ASSERT(svp); | |
| 3594 | |
| 3595 vlun = svp->svp_svl; | |
| 3596 ASSERT(vlun); | |
| 3597 | |
| 3598 /* Wait for clean termination of scsi_watch */ | |
| 3599 (void) scsi_watch_request_terminate(svp->svp_sw_token, | |
| 3600 SCSI_WATCH_TERMINATE_WAIT); | |
| 3601 svp->svp_sw_token = NULL; | |
| 3602 | |
| 3603 /* release path and freeup resources to indicate failover completion */ | |
| 3604 mdi_rele_path(swarg->svs_pi); | |
| 3605 if (swarg->svs_release_lun) { | |
| 3606 VHCI_RELEASE_LUN(vlun); | |
| 3607 } | |
| 3608 kmem_free((void *)swarg, sizeof (*swarg)); | |
| 3609 } | |
| 3610 | |
| 3611 /* | |
| 3612 * Update the path states | |
| 3613 * vlun should be HELD when this is invoked. | |
| 3614 * Calls vhci_efo_done to cleanup resources allocated for EFO. | |
| 3615 */ | |
| 3616 void | |
| 3617 vhci_update_pathstates(void *arg) | |
| 3618 { | |
| 3619 mdi_pathinfo_t *pip, *npip; | |
| 3620 dev_info_t *dip, *pdip; | |
| 3621 struct scsi_failover_ops *fo; | |
| 3622 struct scsi_vhci_priv *svp; | |
| 3623 struct scsi_device *psd; | |
| 3624 struct scsi_path_opinfo opinfo; | |
| 3625 char *pclass, *tptr; | |
| 3626 struct scsi_vhci_lun *vlun = (struct scsi_vhci_lun *)arg; | |
| 3627 int sps; /* mdi_select_path() status */ | |
| 3628 char *cpath, *dpath; | |
| 3629 struct scsi_vhci *vhci; | |
| 3630 struct scsi_pkt *pkt; | |
| 3631 struct buf *bp; | |
| 3632 int reserve_conflict = 0; | |
| 3633 | |
| 3634 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 3635 dip = vlun->svl_dip; | |
| 3636 pip = npip = NULL; | |
| 3637 | |
| 3638 vhci = ddi_get_soft_state(vhci_softstate, | |
| 3639 ddi_get_instance(ddi_get_parent(dip))); | |
| 3640 | |
| 3641 sps = mdi_select_path(dip, NULL, (MDI_SELECT_ONLINE_PATH | | |
| 3642 MDI_SELECT_STANDBY_PATH), NULL, &npip); | |
| 3643 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
| 3644 goto done; | |
| 3645 } | |
| 3646 | |
| 3647 fo = vlun->svl_fops; | |
| 3648 do { | |
| 3649 pip = npip; | |
| 3650 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 3651 psd = svp->svp_psd; | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
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6777
diff
changeset
|
3652 if (fo->sfo_path_get_opinfo(psd, &opinfo, |
| 4851 | 3653 vlun->svl_fops_ctpriv) != 0) { |
| 3654 sps = mdi_select_path(dip, NULL, | |
| 3655 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 3656 pip, &npip); | |
| 3657 mdi_rele_path(pip); | |
| 3658 continue; | |
| 3659 } | |
| 3660 | |
| 3661 if (mdi_prop_lookup_string(pip, "path-class", &pclass) != | |
| 3662 MDI_SUCCESS) { | |
| 3663 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3664 "!vhci_update_pathstates: prop lookup failed for " | |
| 3665 "path 0x%p\n", (void *)pip)); | |
| 3666 sps = mdi_select_path(dip, NULL, | |
| 3667 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 3668 pip, &npip); | |
| 3669 mdi_rele_path(pip); | |
| 3670 continue; | |
| 3671 } | |
| 3672 | |
| 3673 /* | |
| 3674 * Need to update the "path-class" property | |
| 3675 * value in the device tree if different | |
| 3676 * from the existing value. | |
| 3677 */ | |
| 3678 if (strcmp(pclass, opinfo.opinfo_path_attr) != 0) { | |
| 3679 (void) mdi_prop_update_string(pip, "path-class", | |
| 3680 opinfo.opinfo_path_attr); | |
| 3681 } | |
| 3682 | |
| 3683 /* | |
| 3684 * Only change the state if needed. i.e. Don't call | |
| 3685 * mdi_pi_set_state to ONLINE a path if its already | |
| 3686 * ONLINE. Same for STANDBY paths. | |
| 3687 */ | |
| 3688 | |
| 3689 if ((opinfo.opinfo_path_state == SCSI_PATH_ACTIVE || | |
| 3690 opinfo.opinfo_path_state == SCSI_PATH_ACTIVE_NONOPT)) { | |
| 3691 if (!(MDI_PI_IS_ONLINE(pip))) { | |
| 3692 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3693 "!vhci_update_pathstates: marking path" | |
| 3694 " 0x%p as ONLINE\n", (void *)pip)); | |
| 3695 pdip = mdi_pi_get_phci(pip); | |
| 3696 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3697 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3698 vhci_log(CE_NOTE, ddi_get_parent(dip), "!%s" | |
| 3699 " (%s%d): path %s (%s%d) target address %s" | |
| 3700 " is now ONLINE because of" | |
| 3701 " an externally initiated failover", | |
| 3702 ddi_pathname(dip, cpath), | |
| 3703 ddi_driver_name(dip), | |
| 3704 ddi_get_instance(dip), | |
| 3705 ddi_pathname(pdip, dpath), | |
| 3706 ddi_driver_name(pdip), | |
| 3707 ddi_get_instance(pdip), | |
| 3708 mdi_pi_get_addr(pip)); | |
| 3709 kmem_free(cpath, MAXPATHLEN); | |
| 3710 kmem_free(dpath, MAXPATHLEN); | |
| 3711 mdi_pi_set_state(pip, | |
| 3712 MDI_PATHINFO_STATE_ONLINE); | |
| 3713 mdi_pi_set_preferred(pip, | |
| 3714 opinfo.opinfo_preferred); | |
| 3715 tptr = kmem_alloc(strlen | |
| 3716 (opinfo.opinfo_path_attr)+1, KM_SLEEP); | |
| 3717 (void) strlcpy(tptr, opinfo.opinfo_path_attr, | |
| 3718 (strlen(opinfo.opinfo_path_attr)+1)); | |
| 3719 mutex_enter(&vlun->svl_mutex); | |
| 3720 if (vlun->svl_active_pclass != NULL) { | |
| 3721 kmem_free(vlun->svl_active_pclass, | |
| 3722 strlen(vlun->svl_active_pclass)+1); | |
| 3723 } | |
| 3724 vlun->svl_active_pclass = tptr; | |
| 3725 if (vlun->svl_waiting_for_activepath) { | |
| 3726 vlun->svl_waiting_for_activepath = 0; | |
| 3727 } | |
| 3728 mutex_exit(&vlun->svl_mutex); | |
| 3729 /* Check for Reservation Conflict */ | |
| 3730 bp = scsi_alloc_consistent_buf( | |
| 3731 &svp->svp_psd->sd_address, | |
| 3732 (struct buf *)NULL, DEV_BSIZE, B_READ, | |
| 3733 NULL, NULL); | |
| 3734 if (!bp) { | |
| 3735 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3736 "vhci_update_pathstates: " | |
| 3737 "!No resources (buf)\n")); | |
| 3738 mdi_rele_path(pip); | |
| 3739 goto done; | |
| 3740 } | |
| 3741 pkt = scsi_init_pkt(&svp->svp_psd->sd_address, | |
| 3742 NULL, bp, CDB_GROUP1, | |
| 3743 sizeof (struct scsi_arq_status), 0, | |
| 3744 PKT_CONSISTENT, NULL, NULL); | |
| 3745 if (pkt) { | |
| 3746 (void) scsi_setup_cdb((union scsi_cdb *) | |
| 3747 (uintptr_t)pkt->pkt_cdbp, | |
| 3748 SCMD_READ, 1, 1, 0); | |
| 3749 pkt->pkt_time = 3*30; | |
| 3750 pkt->pkt_flags = FLAG_NOINTR; | |
|
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
3751 pkt->pkt_path_instance = |
|
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
3752 mdi_pi_get_path_instance(pip); |
|
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
3753 |
| 4851 | 3754 if ((scsi_transport(pkt) == |
| 3755 TRAN_ACCEPT) && (pkt->pkt_reason | |
| 3756 == CMD_CMPLT) && (SCBP_C(pkt) == | |
| 3757 STATUS_RESERVATION_CONFLICT)) { | |
| 3758 reserve_conflict = 1; | |
| 3759 } | |
| 3760 scsi_destroy_pkt(pkt); | |
| 3761 } | |
| 3762 scsi_free_consistent_buf(bp); | |
| 3763 } else if (MDI_PI_IS_ONLINE(pip)) { | |
| 3764 if (strcmp(pclass, opinfo.opinfo_path_attr) | |
| 3765 != 0) { | |
| 3766 mdi_pi_set_preferred(pip, | |
| 3767 opinfo.opinfo_preferred); | |
| 3768 mutex_enter(&vlun->svl_mutex); | |
| 3769 if (vlun->svl_active_pclass == NULL || | |
| 3770 strcmp(opinfo.opinfo_path_attr, | |
| 3771 vlun->svl_active_pclass) != 0) { | |
| 3772 mutex_exit(&vlun->svl_mutex); | |
| 3773 tptr = kmem_alloc(strlen | |
| 3774 (opinfo.opinfo_path_attr)+1, | |
| 3775 KM_SLEEP); | |
| 3776 (void) strlcpy(tptr, | |
| 3777 opinfo.opinfo_path_attr, | |
| 3778 (strlen | |
| 3779 (opinfo.opinfo_path_attr) | |
| 3780 +1)); | |
| 3781 mutex_enter(&vlun->svl_mutex); | |
| 3782 } else { | |
| 3783 /* | |
| 3784 * No need to update | |
| 3785 * svl_active_pclass | |
| 3786 */ | |
| 3787 tptr = NULL; | |
| 3788 mutex_exit(&vlun->svl_mutex); | |
| 3789 } | |
| 3790 if (tptr) { | |
| 3791 if (vlun->svl_active_pclass | |
| 3792 != NULL) { | |
| 3793 kmem_free(vlun-> | |
| 3794 svl_active_pclass, | |
| 3795 strlen(vlun-> | |
| 3796 svl_active_pclass) | |
| 3797 +1); | |
| 3798 } | |
| 3799 vlun->svl_active_pclass = tptr; | |
| 3800 mutex_exit(&vlun->svl_mutex); | |
| 3801 } | |
| 3802 } | |
| 3803 } | |
| 3804 } else if ((opinfo.opinfo_path_state == SCSI_PATH_INACTIVE) && | |
| 3805 !(MDI_PI_IS_STANDBY(pip))) { | |
| 3806 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 3807 "!vhci_update_pathstates: marking path" | |
| 3808 " 0x%p as STANDBY\n", (void *)pip)); | |
| 3809 pdip = mdi_pi_get_phci(pip); | |
| 3810 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3811 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
| 3812 vhci_log(CE_NOTE, ddi_get_parent(dip), "!%s" | |
| 3813 " (%s%d): path %s (%s%d) target address %s" | |
| 3814 " is now STANDBY because of" | |
| 3815 " an externally initiated failover", | |
| 3816 ddi_pathname(dip, cpath), | |
| 3817 ddi_driver_name(dip), | |
| 3818 ddi_get_instance(dip), | |
| 3819 ddi_pathname(pdip, dpath), | |
| 3820 ddi_driver_name(pdip), | |
| 3821 ddi_get_instance(pdip), | |
| 3822 mdi_pi_get_addr(pip)); | |
| 3823 kmem_free(cpath, MAXPATHLEN); | |
| 3824 kmem_free(dpath, MAXPATHLEN); | |
| 3825 mdi_pi_set_state(pip, | |
| 3826 MDI_PATHINFO_STATE_STANDBY); | |
| 3827 mdi_pi_set_preferred(pip, | |
| 3828 opinfo.opinfo_preferred); | |
| 3829 mutex_enter(&vlun->svl_mutex); | |
| 3830 if (vlun->svl_active_pclass != NULL) { | |
| 3831 if (strcmp(vlun->svl_active_pclass, | |
| 3832 opinfo.opinfo_path_attr) == 0) { | |
| 3833 kmem_free(vlun-> | |
| 3834 svl_active_pclass, | |
| 3835 strlen(vlun-> | |
| 3836 svl_active_pclass)+1); | |
| 3837 vlun->svl_active_pclass = NULL; | |
| 3838 } | |
| 3839 } | |
| 3840 mutex_exit(&vlun->svl_mutex); | |
| 3841 } | |
| 3842 (void) mdi_prop_free(pclass); | |
| 3843 sps = mdi_select_path(dip, NULL, | |
| 3844 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 3845 pip, &npip); | |
| 3846 mdi_rele_path(pip); | |
| 3847 | |
| 3848 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 3849 | |
| 3850 /* | |
| 3851 * Check to see if this vlun has an active SCSI-II RESERVE. If so | |
| 3852 * clear the reservation by sending a reset, so the host doesn't | |
| 3853 * receive a reservation conflict. | |
| 3854 * Reset VLUN_RESERVE_ACTIVE_FLG for this vlun. Also notify ssd | |
| 3855 * of the reset, explicitly. | |
| 3856 */ | |
| 3857 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 3858 if (reserve_conflict && (vlun->svl_xlf_capable == 0)) { | |
| 3859 (void) vhci_recovery_reset(vlun, | |
| 3860 &svp->svp_psd->sd_address, FALSE, | |
| 3861 VHCI_DEPTH_TARGET); | |
| 3862 } | |
| 3863 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 3864 mutex_enter(&vhci->vhci_mutex); | |
| 3865 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
| 3866 &vhci->vhci_reset_notify_listf); | |
| 3867 mutex_exit(&vhci->vhci_mutex); | |
| 3868 } | |
| 3869 if (vlun->svl_flags & VLUN_UPDATE_TPG) { | |
| 3870 /* | |
| 3871 * Update the AccessState of related MP-API TPGs | |
| 3872 */ | |
| 3873 (void) vhci_mpapi_update_tpg_acc_state_for_lu(vhci, vlun); | |
| 3874 vlun->svl_flags &= ~VLUN_UPDATE_TPG; | |
| 3875 } | |
| 3876 done: | |
| 3877 if (vlun->svl_efo_update_path) { | |
| 3878 vlun->svl_efo_update_path = 0; | |
| 3879 vhci_efo_done(vlun->svl_swarg); | |
| 3880 vlun->svl_swarg = 0; | |
| 3881 } | |
| 3882 VHCI_RELEASE_LUN(vlun); | |
| 3883 } | |
| 3884 | |
| 3885 /* ARGSUSED */ | |
| 3886 static int | |
| 3887 vhci_pathinfo_init(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 3888 { | |
| 3889 scsi_hba_tran_t *hba = NULL; | |
| 3890 struct scsi_device *psd = NULL; | |
| 3891 scsi_vhci_lun_t *vlun = NULL; | |
| 3892 dev_info_t *pdip = NULL; | |
| 3893 dev_info_t *tgt_dip; | |
| 3894 struct scsi_vhci *vhci; | |
| 3895 char *guid; | |
| 3896 scsi_vhci_priv_t *svp = NULL; | |
| 3897 int rval = MDI_FAILURE; | |
| 3898 int vlun_alloced = 0; | |
| 3899 | |
| 3900 ASSERT(vdip != NULL); | |
| 3901 ASSERT(pip != NULL); | |
| 3902 | |
| 3903 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 3904 ASSERT(vhci != NULL); | |
| 3905 | |
| 3906 pdip = mdi_pi_get_phci(pip); | |
| 3907 ASSERT(pdip != NULL); | |
| 3908 | |
| 3909 hba = ddi_get_driver_private(pdip); | |
| 3910 ASSERT(hba != NULL); | |
| 3911 | |
| 3912 tgt_dip = mdi_pi_get_client(pip); | |
| 3913 ASSERT(tgt_dip != NULL); | |
| 3914 | |
| 3915 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, | |
| 3916 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 3917 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 3918 "vhci_pathinfo_init: lun guid property failed")); | |
| 3919 goto failure; | |
| 3920 } | |
| 3921 | |
| 3922 vlun = vhci_lun_lookup_alloc(tgt_dip, guid, &vlun_alloced); | |
| 3923 ddi_prop_free(guid); | |
| 3924 | |
| 3925 vlun->svl_dip = tgt_dip; | |
| 3926 | |
| 3927 svp = kmem_zalloc(sizeof (*svp), KM_SLEEP); | |
| 3928 svp->svp_svl = vlun; | |
| 3929 | |
| 3930 vlun->svl_lb_policy_save = mdi_get_lb_policy(tgt_dip); | |
| 3931 mutex_init(&svp->svp_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 3932 cv_init(&svp->svp_cv, NULL, CV_DRIVER, NULL); | |
| 3933 | |
| 3934 psd = kmem_zalloc(sizeof (*psd), KM_SLEEP); | |
| 3935 mutex_init(&psd->sd_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 3936 | |
| 3937 /* | |
| 3938 * Clone transport structure if requested, so | |
| 3939 * Self enumerating HBAs always need to use cloning | |
| 3940 */ | |
| 3941 | |
| 3942 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
| 3943 scsi_hba_tran_t *clone = | |
| 3944 kmem_alloc(sizeof (scsi_hba_tran_t), KM_SLEEP); | |
| 3945 bcopy(hba, clone, sizeof (scsi_hba_tran_t)); | |
| 3946 hba = clone; | |
| 3947 hba->tran_sd = psd; | |
| 3948 } else { | |
| 3949 ASSERT(hba->tran_sd == NULL); | |
| 3950 } | |
| 3951 psd->sd_dev = tgt_dip; | |
| 3952 psd->sd_address.a_hba_tran = hba; | |
| 3953 psd->sd_private = (caddr_t)pip; | |
| 3954 svp->svp_psd = psd; | |
| 3955 mdi_pi_set_vhci_private(pip, (caddr_t)svp); | |
| 3956 | |
| 3957 /* | |
| 3958 * call hba's target init entry point if it exists | |
| 3959 */ | |
| 3960 if (hba->tran_tgt_init != NULL) { | |
| 3961 if ((rval = (*hba->tran_tgt_init)(pdip, tgt_dip, | |
| 3962 hba, psd)) != DDI_SUCCESS) { | |
| 3963 VHCI_DEBUG(1, (CE_WARN, pdip, | |
| 3964 "!vhci_pathinfo_init: tran_tgt_init failed for " | |
| 3965 "path=0x%p rval=%x", (void *)pip, rval)); | |
| 3966 goto failure; | |
| 3967 } | |
| 3968 } | |
| 3969 | |
| 3970 svp->svp_new_path = 1; | |
| 3971 | |
| 3972 psd->sd_inq = NULL; | |
| 3973 | |
| 3974 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_pathinfo_init: path:%p\n", | |
| 3975 (void *)pip)); | |
| 3976 return (MDI_SUCCESS); | |
| 3977 | |
| 3978 failure: | |
| 3979 if (psd) { | |
| 3980 mutex_destroy(&psd->sd_mutex); | |
| 3981 kmem_free(psd, sizeof (*psd)); | |
| 3982 } | |
| 3983 if (svp) { | |
| 3984 mdi_pi_set_vhci_private(pip, NULL); | |
| 3985 mutex_destroy(&svp->svp_mutex); | |
| 3986 cv_destroy(&svp->svp_cv); | |
| 3987 kmem_free(svp, sizeof (*svp)); | |
| 3988 } | |
| 3989 if (hba && hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) | |
| 3990 kmem_free(hba, sizeof (scsi_hba_tran_t)); | |
| 3991 | |
| 3992 if (vlun_alloced) | |
| 3993 vhci_lun_free(tgt_dip); | |
| 3994 | |
| 3995 return (rval); | |
| 3996 } | |
| 3997 | |
| 3998 /* ARGSUSED */ | |
| 3999 static int | |
| 4000 vhci_pathinfo_uninit(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 4001 { | |
| 4002 scsi_hba_tran_t *hba = NULL; | |
| 4003 struct scsi_device *psd = NULL; | |
| 4004 dev_info_t *pdip = NULL; | |
| 4005 dev_info_t *cdip = NULL; | |
| 4006 scsi_vhci_priv_t *svp = NULL; | |
| 4007 | |
| 4008 ASSERT(vdip != NULL); | |
| 4009 ASSERT(pip != NULL); | |
| 4010 | |
| 4011 pdip = mdi_pi_get_phci(pip); | |
| 4012 ASSERT(pdip != NULL); | |
| 4013 | |
| 4014 cdip = mdi_pi_get_client(pip); | |
| 4015 ASSERT(cdip != NULL); | |
| 4016 | |
| 4017 hba = ddi_get_driver_private(pdip); | |
| 4018 ASSERT(hba != NULL); | |
| 4019 | |
| 4020 vhci_mpapi_set_path_state(vdip, pip, MP_DRVR_PATH_STATE_REMOVED); | |
| 4021 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 4022 if (svp == NULL) { | |
| 4023 /* path already freed. Nothing to do. */ | |
| 4024 return (MDI_SUCCESS); | |
| 4025 } | |
| 4026 | |
| 4027 psd = svp->svp_psd; | |
| 4028 ASSERT(psd != NULL); | |
| 4029 | |
| 4030 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
| 4031 hba = psd->sd_address.a_hba_tran; | |
| 4032 ASSERT(hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE); | |
| 4033 ASSERT(hba->tran_sd == psd); | |
| 4034 } else { | |
| 4035 ASSERT(hba->tran_sd == NULL); | |
| 4036 } | |
| 4037 | |
| 4038 if (hba->tran_tgt_free != NULL) { | |
| 4039 (*hba->tran_tgt_free) (pdip, cdip, hba, psd); | |
| 4040 } | |
| 4041 mutex_destroy(&psd->sd_mutex); | |
| 4042 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
| 4043 kmem_free(hba, sizeof (*hba)); | |
| 4044 } | |
| 4045 | |
| 4046 mdi_pi_set_vhci_private(pip, NULL); | |
| 4047 kmem_free((caddr_t)psd, sizeof (*psd)); | |
| 4048 | |
| 4049 mutex_destroy(&svp->svp_mutex); | |
| 4050 cv_destroy(&svp->svp_cv); | |
| 4051 kmem_free((caddr_t)svp, sizeof (*svp)); | |
| 4052 | |
| 4053 /* | |
| 4054 * If this is the last path to the client, | |
| 4055 * then free up the vlun as well. | |
| 4056 */ | |
| 4057 if (mdi_client_get_path_count(cdip) == 1) { | |
| 4058 vhci_lun_free(cdip); | |
| 4059 } | |
| 4060 | |
| 4061 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_pathinfo_uninit: path=0x%p\n", | |
| 4062 (void *)pip)); | |
| 4063 return (MDI_SUCCESS); | |
| 4064 } | |
| 4065 | |
| 4066 /* ARGSUSED */ | |
| 4067 static int | |
| 4068 vhci_pathinfo_state_change(dev_info_t *vdip, mdi_pathinfo_t *pip, | |
| 4069 mdi_pathinfo_state_t state, uint32_t ext_state, int flags) | |
| 4070 { | |
| 4071 int rval = MDI_SUCCESS; | |
| 4072 scsi_vhci_priv_t *svp; | |
| 4073 scsi_vhci_lun_t *vlun; | |
| 4074 int held; | |
| 4075 int op = (flags & 0xf00) >> 8; | |
| 4076 struct scsi_vhci *vhci; | |
| 4077 | |
| 4078 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 4079 | |
| 4080 if (flags & MDI_EXT_STATE_CHANGE) { | |
| 4081 /* | |
| 4082 * We do not want to issue any commands down the path in case | |
| 4083 * sync flag is set. Lower layers might not be ready to accept | |
| 4084 * any I/O commands. | |
| 4085 */ | |
| 4086 if (op == DRIVER_DISABLE) | |
| 4087 return (MDI_SUCCESS); | |
| 4088 | |
| 4089 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 4090 if (svp == NULL) { | |
| 4091 return (MDI_FAILURE); | |
| 4092 } | |
| 4093 vlun = svp->svp_svl; | |
| 4094 | |
| 4095 if (flags & MDI_BEFORE_STATE_CHANGE) { | |
| 4096 /* | |
| 4097 * Hold the LUN. | |
| 4098 */ | |
| 4099 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
| 4100 if (flags & MDI_DISABLE_OP) { | |
| 4101 /* | |
| 4102 * Issue scsi reset if it happens to be | |
| 4103 * reserved path. | |
| 4104 */ | |
| 4105 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 4106 /* | |
| 4107 * if reservation pending on | |
| 4108 * this path, dont' mark the | |
| 4109 * path busy | |
| 4110 */ | |
| 4111 if (op == DRIVER_DISABLE_TRANSIENT) { | |
| 4112 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 4113 "!vhci_pathinfo" | |
| 4114 "_state_change (pip:%p): " | |
| 4115 " reservation: fail busy\n", | |
| 4116 (void *)pip)); | |
| 4117 return (MDI_FAILURE); | |
| 4118 } | |
| 4119 if (pip == vlun->svl_resrv_pip) { | |
| 4120 if (vhci_recovery_reset( | |
| 4121 svp->svp_svl, | |
| 4122 &svp->svp_psd->sd_address, | |
| 4123 TRUE, | |
| 4124 VHCI_DEPTH_TARGET) == 0) { | |
| 4125 VHCI_DEBUG(1, | |
| 4126 (CE_NOTE, NULL, | |
| 4127 "!vhci_pathinfo" | |
| 4128 "_state_change " | |
| 4129 " (pip:%p): " | |
| 4130 "reset failed, " | |
| 4131 "give up!\n", | |
| 4132 (void *)pip)); | |
| 4133 } | |
| 4134 vlun->svl_flags &= | |
| 4135 ~VLUN_RESERVE_ACTIVE_FLG; | |
| 4136 } | |
| 4137 } | |
| 4138 } else if (flags & MDI_ENABLE_OP) { | |
| 4139 if (((vhci->vhci_conf_flags & | |
| 4140 VHCI_CONF_FLAGS_AUTO_FAILBACK) == | |
| 4141 VHCI_CONF_FLAGS_AUTO_FAILBACK) && | |
| 4142 MDI_PI_IS_USER_DISABLE(pip) && | |
| 4143 MDI_PI_IS_STANDBY(pip)) { | |
| 4144 struct scsi_failover_ops *fo; | |
| 4145 char *best_pclass, *pclass = NULL; | |
| 4146 int best_class, rv; | |
| 4147 /* | |
| 4148 * Failback if enabling a standby path | |
| 4149 * and it is the primary class or | |
| 4150 * preferred class | |
| 4151 */ | |
| 4152 best_class = mdi_pi_get_preferred(pip); | |
| 4153 if (best_class == 0) { | |
| 4154 /* | |
| 4155 * if not preferred - compare | |
| 4156 * path-class with class | |
| 4157 */ | |
| 4158 fo = vlun->svl_fops; | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4159 (void) fo->sfo_pathclass_next( |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4160 NULL, &best_pclass, |
| 4851 | 4161 vlun->svl_fops_ctpriv); |
| 4162 pclass = NULL; | |
| 4163 rv = mdi_prop_lookup_string(pip, | |
| 4164 "path-class", &pclass); | |
| 4165 if (rv != MDI_SUCCESS || | |
| 4166 pclass == NULL) { | |
| 4167 vhci_log(CE_NOTE, vdip, | |
| 4168 "!path-class " | |
| 4169 " lookup " | |
| 4170 "failed. rv: %d" | |
| 4171 "class: %p", rv, | |
| 4172 (void *)pclass); | |
| 4173 } else if (strncmp(pclass, | |
| 4174 best_pclass, | |
| 4175 strlen(best_pclass)) == 0) { | |
| 4176 best_class = 1; | |
| 4177 } | |
| 4178 if (rv == MDI_SUCCESS && | |
| 4179 pclass != NULL) { | |
| 4180 rv = mdi_prop_free( | |
| 4181 pclass); | |
| 4182 if (rv != | |
| 4183 DDI_PROP_SUCCESS) { | |
| 4184 vhci_log( | |
| 4185 CE_NOTE, | |
| 4186 vdip, | |
| 4187 "!path-" | |
| 4188 "class" | |
| 4189 " free" | |
| 4190 " failed" | |
| 4191 " rv: %d" | |
| 4192 " class: " | |
| 4193 "%p", | |
| 4194 rv, | |
| 4195 (void *) | |
| 4196 pclass); | |
| 4197 } | |
| 4198 } | |
| 4199 } | |
| 4200 if (best_class == 1) { | |
| 4201 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 4202 "preferred path: %p " | |
| 4203 "USER_DISABLE->USER_ENABLE " | |
| 4204 "transition for lun %s\n", | |
| 4205 (void *)pip, | |
| 4206 vlun->svl_lun_wwn)); | |
| 4207 (void) taskq_dispatch( | |
| 4208 vhci->vhci_taskq, | |
| 4209 vhci_initiate_auto_failback, | |
| 4210 (void *) vlun, KM_SLEEP); | |
| 4211 } | |
| 4212 } | |
| 4213 /* | |
| 4214 * if PGR is active, revalidate key and | |
| 4215 * register on this path also, if key is | |
| 4216 * still valid | |
| 4217 */ | |
| 4218 sema_p(&vlun->svl_pgr_sema); | |
| 4219 if (vlun->svl_pgr_active) | |
| 4220 (void) | |
| 4221 vhci_pgr_validate_and_register(svp); | |
| 4222 sema_v(&vlun->svl_pgr_sema); | |
| 4223 /* | |
| 4224 * Inform target driver about any | |
| 4225 * reservations to be reinstated if target | |
| 4226 * has dropped reservation during the busy | |
| 4227 * period. | |
| 4228 */ | |
| 4229 mutex_enter(&vhci->vhci_mutex); | |
| 4230 scsi_hba_reset_notify_callback( | |
| 4231 &vhci->vhci_mutex, | |
| 4232 &vhci->vhci_reset_notify_listf); | |
| 4233 mutex_exit(&vhci->vhci_mutex); | |
| 4234 } | |
| 4235 } | |
| 4236 if (flags & MDI_AFTER_STATE_CHANGE) { | |
| 4237 if (flags & MDI_ENABLE_OP) { | |
| 4238 mutex_enter(&vhci_global_mutex); | |
| 4239 cv_broadcast(&vhci_cv); | |
| 4240 mutex_exit(&vhci_global_mutex); | |
| 4241 } | |
| 4242 if (vlun->svl_setcap_done) { | |
| 4243 (void) vhci_pHCI_cap(&svp->svp_psd->sd_address, | |
| 4244 "sector-size", vlun->svl_sector_size, | |
| 4245 1, pip); | |
| 4246 } | |
| 4247 | |
| 4248 /* | |
| 4249 * Release the LUN | |
| 4250 */ | |
| 4251 VHCI_RELEASE_LUN(vlun); | |
| 4252 | |
| 4253 /* | |
| 4254 * Path transition is complete. | |
| 4255 * Run callback to indicate target driver to | |
| 4256 * retry to prevent IO starvation. | |
| 4257 */ | |
| 4258 if (scsi_callback_id != 0) { | |
| 4259 ddi_run_callback(&scsi_callback_id); | |
| 4260 } | |
| 4261 } | |
| 4262 } else { | |
| 4263 switch (state) { | |
| 4264 case MDI_PATHINFO_STATE_ONLINE: | |
| 4265 rval = vhci_pathinfo_online(vdip, pip, flags); | |
| 4266 break; | |
| 4267 | |
| 4268 case MDI_PATHINFO_STATE_OFFLINE: | |
| 4269 rval = vhci_pathinfo_offline(vdip, pip, flags); | |
| 4270 break; | |
| 4271 | |
| 4272 default: | |
| 4273 break; | |
| 4274 } | |
| 4275 /* | |
| 4276 * Path transition is complete. | |
| 4277 * Run callback to indicate target driver to | |
| 4278 * retry to prevent IO starvation. | |
| 4279 */ | |
| 4280 if ((rval == MDI_SUCCESS) && (scsi_callback_id != 0)) { | |
| 4281 ddi_run_callback(&scsi_callback_id); | |
| 4282 } | |
| 4283 return (rval); | |
| 4284 } | |
| 4285 | |
| 4286 return (MDI_SUCCESS); | |
| 4287 } | |
| 4288 | |
| 4289 /* | |
| 4290 * Parse the mpxio load balancing options. The datanameptr | |
| 4291 * will point to a string containing the load-balance-options value. | |
| 4292 * The load-balance-options value will be a property that | |
| 4293 * defines the load-balance algorithm and any arguments to that | |
| 4294 * algorithm. | |
| 4295 * For example: | |
| 4296 * device-type-mpxio-options-list= | |
| 4297 * "device-type=SUN SENA", "load-balance-options=logical-block-options" | |
| 4298 * "device-type=SUN SE6920", "round-robin-options"; | |
| 4299 * logical-block-options="load-balance=logical-block", "region-size=15"; | |
| 4300 * round-robin-options="load-balance=round-robin"; | |
| 4301 * | |
| 4302 * If the load-balance is not defined the load balance algorithm will | |
| 4303 * default to the global setting. There will be default values assigned | |
| 4304 * to the arguments (region-size=18) and if an argument is one | |
| 4305 * that is not known, it will be ignored. | |
| 4306 */ | |
| 4307 static void | |
| 4308 vhci_parse_mpxio_lb_options(dev_info_t *dip, dev_info_t *cdip, | |
| 4309 caddr_t datanameptr) | |
| 4310 { | |
| 4311 char *dataptr, *next_entry; | |
| 4312 caddr_t config_list = NULL; | |
| 4313 int config_list_len = 0, list_len = 0; | |
| 4314 int region_size = -1; | |
| 4315 client_lb_t load_balance; | |
| 4316 | |
| 4317 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, datanameptr, | |
| 4318 (caddr_t)&config_list, &config_list_len) != DDI_PROP_SUCCESS) { | |
| 4319 return; | |
| 4320 } | |
| 4321 | |
| 4322 list_len = config_list_len; | |
| 4323 next_entry = config_list; | |
| 4324 while (config_list_len > 0) { | |
| 4325 dataptr = next_entry; | |
| 4326 | |
| 4327 if (strncmp(mdi_load_balance, dataptr, | |
| 4328 strlen(mdi_load_balance)) == 0) { | |
| 4329 /* get the load-balance scheme */ | |
| 4330 dataptr += strlen(mdi_load_balance) + 1; | |
| 4331 if (strcmp(dataptr, LOAD_BALANCE_PROP_RR) == 0) { | |
| 4332 (void) mdi_set_lb_policy(cdip, LOAD_BALANCE_RR); | |
| 4333 load_balance = LOAD_BALANCE_RR; | |
| 4334 } else if (strcmp(dataptr, | |
| 4335 LOAD_BALANCE_PROP_LBA) == 0) { | |
| 4336 (void) mdi_set_lb_policy(cdip, | |
| 4337 LOAD_BALANCE_LBA); | |
| 4338 load_balance = LOAD_BALANCE_LBA; | |
| 4339 } else if (strcmp(dataptr, | |
| 4340 LOAD_BALANCE_PROP_NONE) == 0) { | |
| 4341 (void) mdi_set_lb_policy(cdip, | |
| 4342 LOAD_BALANCE_NONE); | |
| 4343 load_balance = LOAD_BALANCE_NONE; | |
| 4344 } | |
| 4345 } else if (strncmp(dataptr, LOGICAL_BLOCK_REGION_SIZE, | |
| 4346 strlen(LOGICAL_BLOCK_REGION_SIZE)) == 0) { | |
| 4347 int i = 0; | |
| 4348 char *ptr; | |
| 4349 char *tmp; | |
| 4350 | |
| 4351 tmp = dataptr + (strlen(LOGICAL_BLOCK_REGION_SIZE) + 1); | |
| 4352 /* check for numeric value */ | |
| 4353 for (ptr = tmp; i < strlen(tmp); i++, ptr++) { | |
| 4354 if (!isdigit(*ptr)) { | |
| 4355 cmn_err(CE_WARN, | |
| 4356 "Illegal region size: %s." | |
| 4357 " Setting to default value: %d", | |
| 4358 tmp, | |
| 4359 LOAD_BALANCE_DEFAULT_REGION_SIZE); | |
| 4360 region_size = | |
| 4361 LOAD_BALANCE_DEFAULT_REGION_SIZE; | |
| 4362 break; | |
| 4363 } | |
| 4364 } | |
| 4365 if (i >= strlen(tmp)) { | |
| 4366 region_size = stoi(&tmp); | |
| 4367 } | |
| 4368 (void) mdi_set_lb_region_size(cdip, region_size); | |
| 4369 } | |
| 4370 config_list_len -= (strlen(next_entry) + 1); | |
| 4371 next_entry += strlen(next_entry) + 1; | |
| 4372 } | |
| 4373 #ifdef DEBUG | |
| 4374 if ((region_size >= 0) && (load_balance != LOAD_BALANCE_LBA)) { | |
| 4375 VHCI_DEBUG(1, (CE_NOTE, dip, | |
| 4376 "!vhci_parse_mpxio_lb_options: region-size: %d" | |
| 4377 "only valid for load-balance=logical-block\n", | |
| 4378 region_size)); | |
| 4379 } | |
| 4380 #endif | |
| 4381 if ((region_size == -1) && (load_balance == LOAD_BALANCE_LBA)) { | |
| 4382 VHCI_DEBUG(1, (CE_NOTE, dip, | |
| 4383 "!vhci_parse_mpxio_lb_options: No region-size" | |
| 4384 " defined load-balance=logical-block." | |
| 4385 " Default to: %d\n", LOAD_BALANCE_DEFAULT_REGION_SIZE)); | |
| 4386 (void) mdi_set_lb_region_size(cdip, | |
| 4387 LOAD_BALANCE_DEFAULT_REGION_SIZE); | |
| 4388 } | |
| 4389 if (list_len > 0) { | |
| 4390 kmem_free(config_list, list_len); | |
| 4391 } | |
| 4392 } | |
| 4393 | |
| 4394 /* | |
| 4395 * Parse the device-type-mpxio-options-list looking for the key of | |
| 4396 * "load-balance-options". If found, parse the load balancing options. | |
| 4397 * Check the comment of the vhci_get_device_type_mpxio_options() | |
| 4398 * for the device-type-mpxio-options-list. | |
| 4399 */ | |
| 4400 static void | |
| 4401 vhci_parse_mpxio_options(dev_info_t *dip, dev_info_t *cdip, | |
| 4402 caddr_t datanameptr, int list_len) | |
| 4403 { | |
| 4404 char *dataptr; | |
| 4405 int len; | |
| 4406 | |
| 4407 /* | |
| 4408 * get the data list | |
| 4409 */ | |
| 4410 dataptr = datanameptr; | |
| 4411 len = 0; | |
| 4412 while (len < list_len && | |
| 4413 strncmp(dataptr, DEVICE_TYPE_STR, strlen(DEVICE_TYPE_STR)) | |
| 4414 != 0) { | |
| 4415 if (strncmp(dataptr, LOAD_BALANCE_OPTIONS, | |
| 4416 strlen(LOAD_BALANCE_OPTIONS)) == 0) { | |
| 4417 len += strlen(LOAD_BALANCE_OPTIONS) + 1; | |
| 4418 dataptr += strlen(LOAD_BALANCE_OPTIONS) + 1; | |
| 4419 vhci_parse_mpxio_lb_options(dip, cdip, dataptr); | |
| 4420 } | |
| 4421 len += strlen(dataptr) + 1; | |
| 4422 dataptr += strlen(dataptr) + 1; | |
| 4423 } | |
| 4424 } | |
| 4425 | |
| 4426 /* | |
| 4427 * Check the inquriy string returned from the device wiith the device-type | |
| 4428 * Check for the existence of the device-type-mpxio-options-list and | |
| 4429 * if found parse the list checking for a match with the device-type | |
| 4430 * value and the inquiry string returned from the device. If a match | |
| 4431 * is found, parse the mpxio options list. The format of the | |
| 4432 * device-type-mpxio-options-list is: | |
| 4433 * device-type-mpxio-options-list= | |
| 4434 * "device-type=SUN SENA", "load-balance-options=logical-block-options" | |
| 4435 * "device-type=SUN SE6920", "round-robin-options"; | |
| 4436 * logical-block-options="load-balance=logical-block", "region-size=15"; | |
| 4437 * round-robin-options="load-balance=round-robin"; | |
| 4438 */ | |
| 4439 void | |
| 4440 vhci_get_device_type_mpxio_options(dev_info_t *dip, dev_info_t *cdip, | |
| 4441 struct scsi_device *devp) | |
| 4442 { | |
| 4443 | |
| 4444 caddr_t config_list = NULL; | |
| 4445 caddr_t vidptr, datanameptr; | |
| 4446 int vidlen, dupletlen = 0; | |
| 4447 int config_list_len = 0, len; | |
| 4448 struct scsi_inquiry *inq = devp->sd_inq; | |
| 4449 | |
| 4450 /* | |
| 4451 * look up the device-type-mpxio-options-list and walk thru | |
| 4452 * the list compare the vendor ids of the earlier inquiry command and | |
| 4453 * with those vids in the list if there is a match, lookup | |
| 4454 * the mpxio-options value | |
| 4455 */ | |
| 4456 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, | |
| 4457 MPXIO_OPTIONS_LIST, | |
| 4458 (caddr_t)&config_list, &config_list_len) == DDI_PROP_SUCCESS) { | |
| 4459 | |
| 4460 /* | |
| 4461 * Compare vids in each duplet - if it matches, | |
| 4462 * parse the mpxio options list. | |
| 4463 */ | |
| 4464 for (len = config_list_len, vidptr = config_list; len > 0; | |
| 4465 len -= dupletlen) { | |
| 4466 | |
| 4467 dupletlen = 0; | |
| 4468 | |
| 4469 if (strlen(vidptr) != 0 && | |
| 4470 strncmp(vidptr, DEVICE_TYPE_STR, | |
| 4471 strlen(DEVICE_TYPE_STR)) == 0) { | |
| 4472 /* point to next duplet */ | |
| 4473 datanameptr = vidptr + strlen(vidptr) + 1; | |
| 4474 /* add len of this duplet */ | |
| 4475 dupletlen += strlen(vidptr) + 1; | |
| 4476 /* get to device type */ | |
| 4477 vidptr += strlen(DEVICE_TYPE_STR) + 1; | |
| 4478 vidlen = strlen(vidptr); | |
| 4479 if ((vidlen != 0) && | |
| 4480 bcmp(inq->inq_vid, vidptr, vidlen) == 0) { | |
| 4481 vhci_parse_mpxio_options(dip, cdip, | |
| 4482 datanameptr, len - dupletlen); | |
| 4483 break; | |
| 4484 } | |
| 4485 /* get to next duplet */ | |
| 4486 vidptr += strlen(vidptr) + 1; | |
| 4487 } | |
| 4488 /* get to the next device-type */ | |
| 4489 while (len - dupletlen > 0 && | |
| 4490 strlen(vidptr) != 0 && | |
| 4491 strncmp(vidptr, DEVICE_TYPE_STR, | |
| 4492 strlen(DEVICE_TYPE_STR)) != 0) { | |
| 4493 dupletlen += strlen(vidptr) + 1; | |
| 4494 vidptr += strlen(vidptr) + 1; | |
| 4495 } | |
| 4496 } | |
| 4497 if (config_list_len > 0) { | |
| 4498 kmem_free(config_list, config_list_len); | |
| 4499 } | |
| 4500 } | |
| 4501 } | |
| 4502 | |
| 4503 static int | |
| 4504 vhci_update_pathinfo(struct scsi_device *psd, mdi_pathinfo_t *pip, | |
| 4505 struct scsi_failover_ops *fo, | |
| 4506 scsi_vhci_lun_t *vlun, | |
| 4507 struct scsi_vhci *vhci) | |
| 4508 { | |
| 4509 struct scsi_path_opinfo opinfo; | |
| 4510 char *pclass, *best_pclass; | |
| 4511 | |
|
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|
4512 if (fo->sfo_path_get_opinfo(psd, &opinfo, vlun->svl_fops_ctpriv) != 0) { |
| 4851 | 4513 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_update_pathinfo: " |
| 4514 "Failed to get operation info for path:%p\n", (void *)pip)); | |
| 4515 return (MDI_FAILURE); | |
| 4516 } | |
| 4517 /* set the xlf capable flag in the vlun for future use */ | |
| 4518 vlun->svl_xlf_capable = opinfo.opinfo_xlf_capable; | |
| 4519 (void) mdi_prop_update_string(pip, "path-class", | |
| 4520 opinfo.opinfo_path_attr); | |
| 4521 | |
| 4522 pclass = opinfo.opinfo_path_attr; | |
| 4523 if (opinfo.opinfo_path_state == SCSI_PATH_ACTIVE) { | |
| 4524 mutex_enter(&vlun->svl_mutex); | |
| 4525 if (vlun->svl_active_pclass != NULL) { | |
| 4526 if (strcmp(vlun->svl_active_pclass, pclass) != 0) { | |
| 4527 mutex_exit(&vlun->svl_mutex); | |
| 4528 /* | |
| 4529 * Externally initiated failover has happened; | |
| 4530 * force the path state to be STANDBY/ONLINE, | |
| 4531 * next IO will trigger failover and thus | |
| 4532 * sync-up the pathstates. Reason we don't | |
| 4533 * sync-up immediately by invoking | |
| 4534 * vhci_update_pathstates() is because it | |
| 4535 * needs a VHCI_HOLD_LUN() and we don't | |
| 4536 * want to block here. | |
| 4537 * | |
| 4538 * Further, if the device is an ALUA device, | |
| 4539 * then failure to exactly match 'pclass' and | |
| 4540 * 'svl_active_pclass'(as is the case here) | |
| 4541 * indicates that the currently active path | |
| 4542 * is a 'non-optimized' path - which means | |
| 4543 * that 'svl_active_pclass' needs to be | |
| 4544 * replaced with opinfo.opinfo_path_state | |
| 4545 * value. | |
| 4546 */ | |
| 4547 | |
| 4548 if (SCSI_FAILOVER_IS_TPGS(vlun->svl_fops)) { | |
| 4549 char *tptr; | |
| 4550 | |
| 4551 /* | |
| 4552 * The device is ALUA compliant. The | |
| 4553 * state need to be changed to online | |
| 4554 * rather than standby state which is | |
| 4555 * done typically for a asymmetric | |
| 4556 * device that is non ALUA compliant. | |
| 4557 */ | |
| 4558 mdi_pi_set_state(pip, | |
| 4559 MDI_PATHINFO_STATE_ONLINE); | |
| 4560 tptr = kmem_alloc(strlen | |
| 4561 (opinfo.opinfo_path_attr)+1, | |
| 4562 KM_SLEEP); | |
| 4563 (void) strlcpy(tptr, | |
| 4564 opinfo.opinfo_path_attr, | |
| 4565 (strlen(opinfo.opinfo_path_attr) | |
| 4566 +1)); | |
| 4567 mutex_enter(&vlun->svl_mutex); | |
| 4568 kmem_free(vlun->svl_active_pclass, | |
| 4569 strlen(vlun->svl_active_pclass)+1); | |
| 4570 vlun->svl_active_pclass = tptr; | |
| 4571 mutex_exit(&vlun->svl_mutex); | |
| 4572 } else { | |
| 4573 /* | |
| 4574 * Non ALUA device case. | |
| 4575 */ | |
| 4576 mdi_pi_set_state(pip, | |
| 4577 MDI_PATHINFO_STATE_STANDBY); | |
| 4578 } | |
| 4579 vlun->svl_fo_support = opinfo.opinfo_mode; | |
| 4580 mdi_pi_set_preferred(pip, | |
| 4581 opinfo.opinfo_preferred); | |
| 4582 return (MDI_SUCCESS); | |
| 4583 } | |
| 4584 } else { | |
| 4585 char *tptr; | |
| 4586 | |
| 4587 /* | |
| 4588 * lets release the mutex before we try to | |
| 4589 * allocate since the potential to sleep is | |
| 4590 * possible. | |
| 4591 */ | |
| 4592 mutex_exit(&vlun->svl_mutex); | |
| 4593 tptr = kmem_alloc(strlen(pclass)+1, KM_SLEEP); | |
| 4594 (void) strlcpy(tptr, pclass, (strlen(pclass)+1)); | |
| 4595 mutex_enter(&vlun->svl_mutex); | |
| 4596 vlun->svl_active_pclass = tptr; | |
| 4597 } | |
| 4598 mutex_exit(&vlun->svl_mutex); | |
| 4599 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_ONLINE); | |
| 4600 vlun->svl_waiting_for_activepath = 0; | |
| 4601 } else if (opinfo.opinfo_path_state == SCSI_PATH_ACTIVE_NONOPT) { | |
| 4602 mutex_enter(&vlun->svl_mutex); | |
| 4603 if (vlun->svl_active_pclass == NULL) { | |
| 4604 char *tptr; | |
| 4605 | |
| 4606 mutex_exit(&vlun->svl_mutex); | |
| 4607 tptr = kmem_alloc(strlen(pclass)+1, KM_SLEEP); | |
| 4608 (void) strlcpy(tptr, pclass, (strlen(pclass)+1)); | |
| 4609 mutex_enter(&vlun->svl_mutex); | |
| 4610 vlun->svl_active_pclass = tptr; | |
| 4611 } | |
| 4612 mutex_exit(&vlun->svl_mutex); | |
| 4613 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_ONLINE); | |
| 4614 vlun->svl_waiting_for_activepath = 0; | |
| 4615 } else if (opinfo.opinfo_path_state == SCSI_PATH_INACTIVE) { | |
| 4616 mutex_enter(&vlun->svl_mutex); | |
| 4617 if (vlun->svl_active_pclass != NULL) { | |
| 4618 if (strcmp(vlun->svl_active_pclass, pclass) == 0) { | |
| 4619 mutex_exit(&vlun->svl_mutex); | |
| 4620 /* | |
| 4621 * externally initiated failover has happened; | |
| 4622 * force state to ONLINE (see comment above) | |
| 4623 */ | |
| 4624 mdi_pi_set_state(pip, | |
| 4625 MDI_PATHINFO_STATE_ONLINE); | |
| 4626 vlun->svl_fo_support = opinfo.opinfo_mode; | |
| 4627 mdi_pi_set_preferred(pip, | |
| 4628 opinfo.opinfo_preferred); | |
| 4629 return (MDI_SUCCESS); | |
| 4630 } | |
| 4631 } | |
| 4632 mutex_exit(&vlun->svl_mutex); | |
| 4633 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_STANDBY); | |
| 4634 | |
| 4635 /* | |
| 4636 * Initiate auto-failback, if enabled, for path if path-state | |
| 4637 * is transitioning from OFFLINE->STANDBY and pathclass is the | |
| 4638 * prefered pathclass for this storage. | |
| 4639 * NOTE: In case where opinfo_path_state is SCSI_PATH_ACTIVE | |
| 4640 * (above), where the pi state is set to STANDBY, we don't | |
| 4641 * initiate auto-failback as the next IO shall take care of. | |
| 4642 * this. See comment above. | |
| 4643 */ | |
|
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diff
changeset
|
4644 (void) fo->sfo_pathclass_next(NULL, &best_pclass, |
| 4851 | 4645 vlun->svl_fops_ctpriv); |
| 4646 if (((vhci->vhci_conf_flags & VHCI_CONF_FLAGS_AUTO_FAILBACK) == | |
| 4647 VHCI_CONF_FLAGS_AUTO_FAILBACK) && | |
| 4648 ((strcmp(pclass, best_pclass) == 0) || | |
| 4649 mdi_pi_get_preferred(pip) == 1) && | |
| 4650 ((MDI_PI_OLD_STATE(pip) == MDI_PATHINFO_STATE_OFFLINE)|| | |
| 4651 (MDI_PI_OLD_STATE(pip) == MDI_PATHINFO_STATE_INIT))) { | |
| 4652 VHCI_DEBUG(1, (CE_NOTE, NULL, "%s pathclass path: %p" | |
| 4653 " OFFLINE->STANDBY transition for lun %s\n", | |
| 4654 best_pclass, (void *)pip, vlun->svl_lun_wwn)); | |
| 4655 (void) taskq_dispatch(vhci->vhci_taskq, | |
| 4656 vhci_initiate_auto_failback, (void *) vlun, | |
| 4657 KM_SLEEP); | |
| 4658 } | |
| 4659 } | |
| 4660 vlun->svl_fo_support = opinfo.opinfo_mode; | |
| 4661 mdi_pi_set_preferred(pip, opinfo.opinfo_preferred); | |
| 4662 | |
| 4663 VHCI_DEBUG(8, (CE_NOTE, NULL, "vhci_update_pathinfo: opinfo_rev = %x," | |
| 4664 " opinfo_path_state = %x opinfo_preferred = %x, opinfo_mode = %x\n", | |
| 4665 opinfo.opinfo_rev, opinfo.opinfo_path_state, | |
| 4666 opinfo.opinfo_preferred, opinfo.opinfo_mode)); | |
| 4667 | |
| 4668 return (MDI_SUCCESS); | |
| 4669 } | |
| 4670 | |
| 4671 /* | |
| 4672 * Form the kstat name and and call mdi_pi_kstat_create() | |
| 4673 */ | |
| 4674 void | |
| 4675 vhci_kstat_create_pathinfo(mdi_pathinfo_t *pip) | |
| 4676 { | |
| 4677 dev_info_t *tgt_dip; | |
| 4678 dev_info_t *pdip; | |
| 4679 char *guid; | |
| 4680 char *target_port, *target_port_dup; | |
| 4681 char ks_name[KSTAT_STRLEN]; | |
| 4682 uint_t pid; | |
| 4683 int by_id; | |
| 4684 mod_hash_val_t hv; | |
| 4685 | |
| 4686 | |
| 4687 /* return if we have already allocated kstats */ | |
| 4688 if (mdi_pi_kstat_exists(pip)) | |
| 4689 return; | |
| 4690 | |
| 4691 /* | |
| 4692 * We need instance numbers to create a kstat name, return if we don't | |
| 4693 * have instance numbers assigned yet. | |
| 4694 */ | |
| 4695 tgt_dip = mdi_pi_get_client(pip); | |
| 4696 pdip = mdi_pi_get_phci(pip); | |
| 4697 if ((ddi_get_instance(tgt_dip) == -1) || (ddi_get_instance(pdip) == -1)) | |
| 4698 return; | |
| 4699 | |
| 4700 /* | |
| 4701 * A path oriented kstat has a ks_name of the form: | |
| 4702 * | |
| 4703 * <client-driver><instance>.t<pid>.<pHCI-driver><instance> | |
| 4704 * | |
| 4705 * We maintain a bidirectional 'target-port' to <pid> map, | |
| 4706 * called targetmap. All pathinfo nodes with the same | |
| 4707 * 'target-port' map to the same <pid>. The iostat(1M) code, | |
| 4708 * when parsing a path oriented kstat name, uses the <pid> as | |
| 4709 * a SCSI_VHCI_GET_TARGET_LONGNAME ioctl argument in order | |
| 4710 * to get the 'target-port'. For KSTAT_FLAG_PERSISTENT kstats, | |
| 4711 * this ioctl needs to translate a <pid> to a 'target-port' | |
| 4712 * even after all pathinfo nodes associated with the | |
| 4713 * 'target-port' have been destroyed. This is needed to support | |
| 4714 * consistent first-iteration activity-since-boot iostat(1M) | |
| 4715 * output. Because of this requirement, the mapping can't be | |
| 4716 * based on pathinfo information in a devinfo snapshot. | |
| 4717 */ | |
| 4718 | |
| 4719 /* determine 'target-port' */ | |
| 4720 if (mdi_prop_lookup_string(pip, | |
| 4721 "target-port", &target_port) == MDI_SUCCESS) { | |
| 4722 target_port_dup = i_ddi_strdup(target_port, KM_SLEEP); | |
| 4723 (void) mdi_prop_free(target_port); | |
| 4724 by_id = 1; | |
| 4725 } else { | |
| 4726 /* | |
| 4727 * If the pHCI did not set up 'target-port' on this | |
| 4728 * pathinfo node, assume that our client is the only | |
| 4729 * one with paths to the device by using the guid | |
| 4730 * value as the 'target-port'. Since no other client | |
| 4731 * will have the same guid, no other client will use | |
| 4732 * the same <pid>. NOTE: a client with an instance | |
| 4733 * number always has a guid. | |
| 4734 */ | |
| 4735 (void) ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, | |
| 4736 PROPFLAGS, MDI_CLIENT_GUID_PROP, &guid); | |
| 4737 target_port_dup = i_ddi_strdup(guid, KM_SLEEP); | |
| 4738 ddi_prop_free(guid); | |
| 4739 | |
| 4740 /* | |
| 4741 * For this type of mapping we don't want the | |
| 4742 * <id> -> 'target-port' mapping to be made. This | |
| 4743 * will cause the SCSI_VHCI_GET_TARGET_LONGNAME ioctl | |
| 4744 * to fail, and the iostat(1M) long '-n' output will | |
| 4745 * still use the <pid>. We do this because we just | |
| 4746 * made up the 'target-port' using the guid, and we | |
| 4747 * don't want to expose that fact in iostat output. | |
| 4748 */ | |
| 4749 by_id = 0; | |
| 4750 } | |
| 4751 | |
| 4752 /* find/establish <pid> given 'target-port' */ | |
| 4753 mutex_enter(&vhci_targetmap_mutex); | |
| 4754 if (mod_hash_find(vhci_targetmap_byport, | |
| 4755 (mod_hash_key_t)target_port_dup, &hv) == 0) { | |
| 4756 pid = (int)(intptr_t)hv; /* mapping exists */ | |
| 4757 } else { | |
| 4758 pid = vhci_targetmap_pid++; /* new mapping */ | |
| 4759 | |
| 4760 (void) mod_hash_insert(vhci_targetmap_byport, | |
| 4761 (mod_hash_key_t)target_port_dup, | |
| 4762 (mod_hash_val_t)(intptr_t)pid); | |
| 4763 if (by_id) { | |
| 4764 (void) mod_hash_insert(vhci_targetmap_bypid, | |
| 4765 (mod_hash_key_t)(uintptr_t)pid, | |
| 4766 (mod_hash_val_t)(uintptr_t)target_port_dup); | |
| 4767 } | |
| 4768 target_port_dup = NULL; /* owned by hash */ | |
| 4769 } | |
| 4770 mutex_exit(&vhci_targetmap_mutex); | |
| 4771 | |
| 4772 /* form kstat name */ | |
| 4773 (void) snprintf(ks_name, KSTAT_STRLEN, "%s%d.t%d.%s%d", | |
| 4774 ddi_driver_name(tgt_dip), ddi_get_instance(tgt_dip), | |
| 4775 pid, ddi_driver_name(pdip), ddi_get_instance(pdip)); | |
| 4776 | |
| 4777 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_path_online: path:%p " | |
| 4778 "kstat %s: pid %x <-> port %s\n", (void *)pip, | |
| 4779 ks_name, pid, target_port_dup)); | |
| 4780 if (target_port_dup) | |
| 4781 kmem_free(target_port_dup, strlen(target_port_dup) + 1); | |
| 4782 | |
| 4783 /* call mdi to create kstats with the name we built */ | |
| 4784 (void) mdi_pi_kstat_create(pip, ks_name); | |
| 4785 } | |
| 4786 | |
| 4787 /* ARGSUSED */ | |
| 4788 static int | |
| 4789 vhci_pathinfo_online(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 4790 { | |
| 4791 scsi_hba_tran_t *hba = NULL; | |
| 4792 struct scsi_device *psd = NULL; | |
| 4793 scsi_vhci_lun_t *vlun = NULL; | |
| 4794 dev_info_t *pdip = NULL; | |
| 4795 dev_info_t *tgt_dip; | |
| 4796 struct scsi_vhci *vhci; | |
| 4797 char *guid; | |
| 4798 struct scsi_failover *sf; | |
| 4799 struct scsi_failover_ops *sfo; | |
| 4800 char *override; | |
| 4801 scsi_vhci_priv_t *svp = NULL; | |
| 4802 struct buf *bp; | |
| 4803 struct scsi_address *ap; | |
| 4804 struct scsi_pkt *pkt; | |
| 4805 int rval = MDI_FAILURE; | |
| 4806 uint_t inq_size = VHCI_STD_INQ_SIZE; | |
| 4807 mpapi_item_list_t *list_ptr; | |
| 4808 mpapi_lu_data_t *ld; | |
| 4809 | |
| 4810 ASSERT(vdip != NULL); | |
| 4811 ASSERT(pip != NULL); | |
| 4812 | |
| 4813 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 4814 ASSERT(vhci != NULL); | |
| 4815 | |
| 4816 pdip = mdi_pi_get_phci(pip); | |
| 4817 hba = ddi_get_driver_private(pdip); | |
| 4818 ASSERT(hba != NULL); | |
| 4819 | |
| 4820 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 4821 ASSERT(svp != NULL); | |
| 4822 | |
| 4823 tgt_dip = mdi_pi_get_client(pip); | |
| 4824 ASSERT(tgt_dip != NULL); | |
| 4825 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, | |
| 4826 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
| 4827 VHCI_DEBUG(1, (CE_WARN, NULL, "vhci_path_online: lun guid " | |
| 4828 "property failed")); | |
| 4829 goto failure; | |
| 4830 } | |
| 4831 | |
| 4832 vlun = vhci_lun_lookup(tgt_dip); | |
| 4833 ASSERT(vlun != NULL); | |
| 4834 | |
| 4835 ddi_prop_free(guid); | |
| 4836 | |
| 4837 vlun->svl_dip = mdi_pi_get_client(pip); | |
| 4838 ASSERT(vlun->svl_dip != NULL); | |
| 4839 | |
| 4840 psd = svp->svp_psd; | |
| 4841 ASSERT(psd != NULL); | |
| 4842 | |
| 4843 /* | |
|
6023
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
4844 * For INQUIRY response buffer size, we use VHCI_STD_INQ_SIZE(132bytes) |
| 4851 | 4845 * instead of SUN_INQSIZE(48bytes) which is used in sd layer. This is |
| 4846 * because we could get the Vendor specific parameters(present 97th | |
| 4847 * byte onwards) which are required to process Vendor specific data | |
| 4848 * based on array type. | |
| 4849 * This INQUIRY buffer is freed in vhci_pathinfo_offline but NEVER | |
| 4850 * in a different layer like sd/phci transport. In other words, vhci | |
| 4851 * maintains its own copy of scsi_device and scsi_inquiry data on a | |
| 4852 * per-path basis. | |
| 4853 */ | |
| 4854 if (psd->sd_inq == NULL) { | |
| 4855 psd->sd_inq = (struct scsi_inquiry *) | |
| 4856 kmem_zalloc(inq_size, KM_SLEEP); | |
| 4857 } | |
| 4858 | |
| 4859 tgt_dip = psd->sd_dev; | |
| 4860 ASSERT(tgt_dip != NULL); | |
| 4861 | |
| 4862 /* | |
| 4863 * do inquiry to pass into probe routine; this | |
| 4864 * will avoid each probe routine doing scsi inquiry | |
| 4865 */ | |
| 4866 bp = getrbuf(KM_SLEEP); | |
| 4867 bp->b_un.b_addr = (caddr_t)psd->sd_inq; | |
| 4868 bp->b_flags = B_READ; | |
| 4869 bp->b_bcount = inq_size; | |
| 4870 bp->b_resid = 0; | |
| 4871 | |
| 4872 ap = &psd->sd_address; | |
| 4873 pkt = scsi_init_pkt(ap, NULL, bp, CDB_GROUP0, | |
| 4874 sizeof (struct scsi_arq_status), 0, 0, SLEEP_FUNC, NULL); | |
| 4875 if (pkt == NULL) { | |
| 4876 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_pathinfo_online: " | |
| 4877 "Inquiry init_pkt failed :%p\n", (void *)pip)); | |
| 4878 rval = MDI_FAILURE; | |
| 4879 goto failure; | |
| 4880 } | |
| 4881 pkt->pkt_cdbp[0] = SCMD_INQUIRY; | |
| 4882 pkt->pkt_cdbp[4] = (uchar_t)inq_size; | |
| 4883 pkt->pkt_time = 60; | |
| 4884 | |
| 4885 rval = vhci_do_scsi_cmd(pkt); | |
| 4886 scsi_destroy_pkt(pkt); | |
| 4887 freerbuf(bp); | |
| 4888 if (rval == 0) { | |
| 4889 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_pathinfo_online: " | |
| 4890 "Failover Inquiry failed path:%p rval:%x\n", | |
| 4891 (void *)pip, rval)); | |
| 4892 rval = MDI_FAILURE; | |
| 4893 goto failure; | |
| 4894 } | |
| 4895 | |
| 4896 /* | |
| 4897 * Determine if device is supported under scsi_vhci, and select | |
| 4898 * failover module. | |
| 4899 * | |
| 4900 * See if there is a scsi_vhci.conf file override for this devices's | |
| 4901 * VID/PID. The following values can be returned: | |
| 4902 * | |
| 4903 * NULL If the NULL is returned then there is no scsi_vhci.conf | |
| 4904 * override. For NULL, we determine the failover_ops for | |
| 4905 * this device by checking the sfo_device_probe entry | |
| 4906 * point for each 'fops' module, in order. | |
| 4907 * | |
| 4908 * NOTE: Correct operation may depend on module ordering | |
| 4909 * of 'specific' (failover modules that are completely | |
| 4910 * VID/PID table based) to 'generic' (failover modules | |
| 4911 * that based on T10 standards like TPGS). Currently, | |
| 4912 * the value of 'ddi-forceload' in scsi_vhci.conf is used | |
| 4913 * to establish the module list and probe order. | |
| 4914 * | |
| 4915 * "NONE" If value "NONE" is returned then there is a | |
| 4916 * scsi_vhci.conf VID/PID override to indicate the device | |
| 4917 * should not be supported under scsi_vhci (even if there | |
| 4918 * is an 'fops' module supporting the device). | |
| 4919 * | |
| 4920 * "<other>" If another value is returned then that value is the | |
| 4921 * name of the 'fops' module that should be used. | |
| 4922 */ | |
| 4923 sfo = NULL; /* "NONE" */ | |
| 4924 override = scsi_get_device_type_string( | |
| 4925 "scsi-vhci-failover-override", vdip, psd); | |
| 4926 | |
| 4927 if (override == NULL) { | |
| 4928 /* NULL: default: select based on sfo_device_probe results */ | |
| 4929 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
| 4930 if ((sf->sf_sfo == NULL) || | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4931 sf->sf_sfo->sfo_device_probe(psd, psd->sd_inq, |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4932 &vlun->svl_fops_ctpriv) == SFO_DEVICE_PROBE_PHCI) |
| 4851 | 4933 continue; |
| 4934 | |
| 4935 /* found failover module, supported under scsi_vhci */ | |
| 4936 sfo = sf->sf_sfo; | |
| 4937 vlun->svl_fops_name = | |
| 4938 i_ddi_strdup(sfo->sfo_name, KM_SLEEP); | |
| 4939 break; | |
| 4940 } | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4941 } else if (strcasecmp(override, "NONE")) { |
| 4851 | 4942 /* !"NONE": select based on driver.conf specified name */ |
| 4943 for (sf = scsi_failover_table, sfo = NULL; sf->sf_mod; sf++) { | |
| 4944 if ((sf->sf_sfo == NULL) || | |
| 4945 (sf->sf_sfo->sfo_name == NULL) || | |
| 4946 strcmp(override, sf->sf_sfo->sfo_name)) | |
| 4947 continue; | |
| 4948 | |
| 4949 /* found failover module, supported under scsi_vhci */ | |
| 4950 sfo = sf->sf_sfo; | |
| 4951 vlun->svl_fops_name = kmem_alloc(strlen("conf ") + | |
| 4952 strlen(sfo->sfo_name) + 1, KM_SLEEP); | |
| 4953 (void) sprintf(vlun->svl_fops_name, "conf %s", | |
| 4954 sfo->sfo_name); | |
| 4955 break; | |
| 4956 } | |
| 4957 } | |
| 4958 if (override) | |
| 4959 kmem_free(override, strlen(override) + 1); | |
| 4960 | |
| 4961 if (sfo == NULL) { | |
| 4962 /* no failover module - device not supported */ | |
| 4963 VHCI_DEBUG(1, (CE_NOTE, vhci->vhci_dip, | |
| 4964 "!vhci_pathinfo_online: dev (path 0x%p) not " | |
| 4965 "supported\n", (void *)pip)); | |
| 4966 vlun->svl_not_supported = 1; | |
| 4967 rval = MDI_NOT_SUPPORTED; | |
| 4968 goto done; | |
| 4969 } | |
| 4970 | |
| 4971 /* failover supported for device - save failover_ops in vlun */ | |
| 4972 vlun->svl_fops = sfo; | |
| 4973 | |
| 4974 /* | |
| 4975 * Obtain the device-type based mpxio options as specified in | |
| 4976 * scsi_vhci.conf file. | |
| 4977 * | |
| 4978 * NOTE: currently, the end result is a call to | |
| 4979 * mdi_set_lb_region_size(). | |
| 4980 */ | |
| 4981 vhci_get_device_type_mpxio_options(vdip, tgt_dip, psd); | |
| 4982 | |
| 4983 /* | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4984 * The device probe or options in conf file may have set/changed the |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4985 * lb policy, save the current value. |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4986 */ |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4987 vlun->svl_lb_policy_save = mdi_get_lb_policy(tgt_dip); |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4988 |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4989 /* |
| 4851 | 4990 * if PGR is active, revalidate key and register on this path also, |
| 4991 * if key is still valid | |
| 4992 */ | |
| 4993 sema_p(&vlun->svl_pgr_sema); | |
| 4994 if (vlun->svl_pgr_active) { | |
| 4995 rval = vhci_pgr_validate_and_register(svp); | |
| 4996 if (rval != 1) { | |
| 4997 rval = MDI_FAILURE; | |
| 4998 sema_v(&vlun->svl_pgr_sema); | |
| 4999 goto failure; | |
| 5000 } | |
| 5001 } | |
| 5002 sema_v(&vlun->svl_pgr_sema); | |
| 5003 | |
| 5004 if (svp->svp_new_path) { | |
| 5005 /* | |
| 5006 * Last chance to perform any cleanup operations on this | |
| 5007 * new path before making this path completely online. | |
| 5008 */ | |
| 5009 svp->svp_new_path = 0; | |
| 5010 | |
| 5011 /* | |
| 5012 * If scsi_vhci knows the lun is alread RESERVE'd, | |
| 5013 * then skip the issue of RELEASE on new path. | |
| 5014 */ | |
| 5015 if ((vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) == 0) { | |
| 5016 /* | |
| 5017 * Issue SCSI-2 RELEASE only for the first time on | |
| 5018 * a new path just in case the host rebooted and | |
| 5019 * a reservation is still pending on this path. | |
| 5020 * IBM Shark storage does not clear RESERVE upon | |
| 5021 * host reboot. | |
| 5022 */ | |
| 5023 ap = &psd->sd_address; | |
| 5024 pkt = scsi_init_pkt(ap, NULL, NULL, CDB_GROUP0, | |
| 5025 sizeof (struct scsi_arq_status), 0, 0, | |
| 5026 SLEEP_FUNC, NULL); | |
| 5027 if (pkt == NULL) { | |
| 5028 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5029 "!vhci_pathinfo_online: " | |
| 5030 "Release init_pkt failed :%p\n", | |
| 5031 (void *)pip)); | |
| 5032 rval = MDI_FAILURE; | |
| 5033 goto failure; | |
| 5034 } | |
| 5035 pkt->pkt_cdbp[0] = SCMD_RELEASE; | |
| 5036 pkt->pkt_time = 60; | |
| 5037 | |
| 5038 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5039 "!vhci_path_online: path:%p " | |
| 5040 "Issued SCSI-2 RELEASE\n", (void *)pip)); | |
| 5041 | |
| 5042 /* Ignore the return value */ | |
| 5043 (void) vhci_do_scsi_cmd(pkt); | |
| 5044 scsi_destroy_pkt(pkt); | |
| 5045 } | |
| 5046 } | |
| 5047 | |
| 5048 rval = vhci_update_pathinfo(psd, pip, sfo, vlun, vhci); | |
| 5049 if (rval == MDI_FAILURE) { | |
| 5050 goto failure; | |
| 5051 } | |
| 5052 | |
| 5053 /* Initialize MP-API data */ | |
| 5054 vhci_update_mpapi_data(vhci, vlun, pip); | |
| 5055 | |
| 5056 /* | |
| 5057 * MP-API also needs the Inquiry data to be maintained in the | |
| 5058 * mp_vendor_prop_t structure, so find the lun and update its | |
| 5059 * structure with this data. | |
| 5060 */ | |
| 5061 list_ptr = (mpapi_item_list_t *)vhci_get_mpapi_item(vhci, NULL, | |
| 5062 MP_OBJECT_TYPE_MULTIPATH_LU, (void *)vlun); | |
| 5063 ld = (mpapi_lu_data_t *)list_ptr->item->idata; | |
| 5064 if (ld != NULL) { | |
| 5065 bcopy(psd->sd_inq->inq_vid, ld->prop.prodInfo.vendor, 8); | |
| 5066 bcopy(psd->sd_inq->inq_pid, ld->prop.prodInfo.product, 16); | |
| 5067 bcopy(psd->sd_inq->inq_revision, ld->prop.prodInfo.revision, 4); | |
| 5068 } else { | |
| 5069 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_pathinfo_online: " | |
| 5070 "mpapi_lu_data_t is NULL")); | |
| 5071 } | |
| 5072 | |
| 5073 /* create kstats for path */ | |
| 5074 vhci_kstat_create_pathinfo(pip); | |
| 5075 | |
| 5076 done: | |
| 5077 mutex_enter(&vhci_global_mutex); | |
| 5078 cv_broadcast(&vhci_cv); | |
| 5079 mutex_exit(&vhci_global_mutex); | |
| 5080 | |
| 5081 if (vlun->svl_setcap_done) { | |
| 5082 (void) vhci_pHCI_cap(ap, "sector-size", | |
| 5083 vlun->svl_sector_size, 1, pip); | |
| 5084 } | |
| 5085 | |
| 5086 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_path_online: path:%p\n", | |
| 5087 (void *)pip)); | |
| 5088 | |
| 5089 failure: | |
| 5090 if ((rval != MDI_SUCCESS) && psd->sd_inq) { | |
| 5091 kmem_free((caddr_t)psd->sd_inq, inq_size); | |
| 5092 psd->sd_inq = (struct scsi_inquiry *)NULL; | |
| 5093 } | |
| 5094 return (rval); | |
| 5095 } | |
| 5096 | |
| 5097 /* | |
| 5098 * path offline handler. Release all bindings that will not be | |
| 5099 * released by the normal packet transport/completion code path. | |
| 5100 * Since we don't (presently) keep any bindings alive outside of | |
| 5101 * the in-transport packets (which will be released on completion) | |
| 5102 * there is not much to do here. | |
| 5103 */ | |
| 5104 /* ARGSUSED */ | |
| 5105 static int | |
| 5106 vhci_pathinfo_offline(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
| 5107 { | |
| 5108 scsi_hba_tran_t *hba = NULL; | |
| 5109 struct scsi_device *psd = NULL; | |
| 5110 dev_info_t *pdip = NULL; | |
| 5111 dev_info_t *cdip = NULL; | |
| 5112 scsi_vhci_priv_t *svp = NULL; | |
| 5113 uint_t inq_size = VHCI_STD_INQ_SIZE; | |
| 5114 | |
| 5115 ASSERT(vdip != NULL); | |
| 5116 ASSERT(pip != NULL); | |
| 5117 | |
| 5118 pdip = mdi_pi_get_phci(pip); | |
| 5119 ASSERT(pdip != NULL); | |
| 5120 if (pdip == NULL) { | |
| 5121 VHCI_DEBUG(1, (CE_WARN, vdip, "Invalid path 0x%p: NULL " | |
| 5122 "phci dip", (void *)pip)); | |
| 5123 return (MDI_FAILURE); | |
| 5124 } | |
| 5125 | |
| 5126 cdip = mdi_pi_get_client(pip); | |
| 5127 ASSERT(cdip != NULL); | |
| 5128 if (cdip == NULL) { | |
| 5129 VHCI_DEBUG(1, (CE_WARN, vdip, "Invalid path 0x%p: NULL " | |
| 5130 "client dip", (void *)pip)); | |
| 5131 return (MDI_FAILURE); | |
| 5132 } | |
| 5133 | |
| 5134 hba = ddi_get_driver_private(pdip); | |
| 5135 ASSERT(hba != NULL); | |
| 5136 | |
| 5137 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 5138 if (svp == NULL) { | |
| 5139 /* | |
| 5140 * mdi_pathinfo node in INIT state can have vHCI private | |
| 5141 * information set to null | |
| 5142 */ | |
| 5143 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5144 "svp is NULL for pip 0x%p\n", (void *)pip)); | |
| 5145 return (MDI_SUCCESS); | |
| 5146 } | |
| 5147 | |
| 5148 psd = svp->svp_psd; | |
| 5149 ASSERT(psd != NULL); | |
| 5150 | |
| 5151 mutex_enter(&svp->svp_mutex); | |
| 5152 | |
| 5153 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5154 "%d cmds pending on path: 0x%p\n", svp->svp_cmds, (void *)pip)); | |
| 5155 while (svp->svp_cmds != 0) { | |
| 5156 if (cv_timedwait(&svp->svp_cv, &svp->svp_mutex, | |
| 5157 ddi_get_lbolt() + | |
| 5158 drv_usectohz(vhci_path_quiesce_timeout * 1000000)) == -1) { | |
| 5159 /* | |
| 5160 * The timeout time reached without the condition | |
| 5161 * being signaled. | |
| 5162 */ | |
| 5163 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5164 "Timeout reached on path 0x%p without the cond\n", | |
| 5165 (void *)pip)); | |
| 5166 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
| 5167 "%d cmds still pending on path: 0x%p\n", | |
| 5168 svp->svp_cmds, (void *)pip)); | |
| 5169 break; | |
| 5170 } | |
| 5171 } | |
| 5172 mutex_exit(&svp->svp_mutex); | |
| 5173 | |
| 5174 /* | |
| 5175 * Check to see if this vlun has an active SCSI-II RESERVE. And this | |
| 5176 * is the pip for the path that has been reserved. | |
| 5177 * If so clear the reservation by sending a reset, so the host will not | |
| 5178 * get a reservation conflict. Reset the flag VLUN_RESERVE_ACTIVE_FLG | |
| 5179 * for this lun. Also a reset notify is sent to the target driver | |
| 5180 * just in case the POR check condition is cleared by some other layer | |
| 5181 * in the stack. | |
| 5182 */ | |
| 5183 if (svp->svp_svl->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
| 5184 if (pip == svp->svp_svl->svl_resrv_pip) { | |
| 5185 if (vhci_recovery_reset(svp->svp_svl, | |
| 5186 &svp->svp_psd->sd_address, TRUE, | |
| 5187 VHCI_DEPTH_TARGET) == 0) { | |
| 5188 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5189 "!vhci_pathinfo_offline (pip:%p):" | |
| 5190 "reset failed, retrying\n", (void *)pip)); | |
| 5191 delay(1*drv_usectohz(1000000)); | |
| 5192 if (vhci_recovery_reset(svp->svp_svl, | |
| 5193 &svp->svp_psd->sd_address, TRUE, | |
| 5194 VHCI_DEPTH_TARGET) == 0) { | |
| 5195 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5196 "!vhci_pathinfo_offline " | |
| 5197 "(pip:%p): reset failed, " | |
| 5198 "giving up!\n", (void *)pip)); | |
| 5199 } | |
| 5200 } | |
| 5201 svp->svp_svl->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 5202 } | |
| 5203 } | |
| 5204 | |
| 5205 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_OFFLINE); | |
| 5206 if (psd->sd_inq) { | |
| 5207 kmem_free((caddr_t)psd->sd_inq, inq_size); | |
| 5208 psd->sd_inq = (struct scsi_inquiry *)NULL; | |
| 5209 } | |
| 5210 vhci_mpapi_set_path_state(vdip, pip, MP_DRVR_PATH_STATE_REMOVED); | |
| 5211 | |
| 5212 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5213 "!vhci_pathinfo_offline: offlined path 0x%p\n", (void *)pip)); | |
| 5214 return (MDI_SUCCESS); | |
| 5215 } | |
| 5216 | |
| 5217 | |
| 5218 /* | |
| 5219 * routine for SCSI VHCI IOCTL implementation. | |
| 5220 */ | |
| 5221 /* ARGSUSED */ | |
| 5222 static int | |
| 5223 vhci_ctl(dev_t dev, int cmd, intptr_t data, int mode, cred_t *credp, int *rval) | |
| 5224 { | |
| 5225 struct scsi_vhci *vhci; | |
| 5226 dev_info_t *vdip; | |
| 5227 mdi_pathinfo_t *pip; | |
| 5228 int instance, held; | |
| 5229 int retval = 0; | |
| 5230 caddr_t phci_path = NULL, client_path = NULL; | |
| 5231 caddr_t paddr = NULL; | |
| 5232 sv_iocdata_t ioc; | |
| 5233 sv_iocdata_t *pioc = &ioc; | |
| 5234 sv_switch_to_cntlr_iocdata_t iocsc; | |
| 5235 sv_switch_to_cntlr_iocdata_t *piocsc = &iocsc; | |
| 5236 caddr_t s; | |
| 5237 scsi_vhci_lun_t *vlun; | |
| 5238 struct scsi_failover_ops *fo; | |
| 5239 char *pclass; | |
| 5240 | |
| 5241 /* Check for validity of vhci structure */ | |
| 5242 vhci = ddi_get_soft_state(vhci_softstate, MINOR2INST(getminor(dev))); | |
| 5243 if (vhci == NULL) { | |
| 5244 return (ENXIO); | |
| 5245 } | |
| 5246 | |
| 5247 mutex_enter(&vhci->vhci_mutex); | |
| 5248 if ((vhci->vhci_state & VHCI_STATE_OPEN) == 0) { | |
| 5249 mutex_exit(&vhci->vhci_mutex); | |
| 5250 return (ENXIO); | |
| 5251 } | |
| 5252 mutex_exit(&vhci->vhci_mutex); | |
| 5253 | |
| 5254 /* Get the vhci dip */ | |
| 5255 vdip = vhci->vhci_dip; | |
| 5256 ASSERT(vdip != NULL); | |
| 5257 instance = ddi_get_instance(vdip); | |
| 5258 | |
| 5259 /* Allocate memory for getting parameters from userland */ | |
| 5260 phci_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP); | |
| 5261 client_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP); | |
| 5262 paddr = kmem_zalloc(MAXNAMELEN, KM_SLEEP); | |
| 5263 | |
| 5264 /* | |
| 5265 * Set a local variable indicating the ioctl name. Used for | |
| 5266 * printing debug strings. | |
| 5267 */ | |
| 5268 switch (cmd) { | |
| 5269 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
| 5270 s = "GET_CLIENT_MULTIPATH_INFO"; | |
| 5271 break; | |
| 5272 | |
| 5273 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
| 5274 s = "GET_PHCI_MULTIPATH_INFO"; | |
| 5275 break; | |
| 5276 | |
| 5277 case SCSI_VHCI_GET_CLIENT_NAME: | |
| 5278 s = "GET_CLIENT_NAME"; | |
| 5279 break; | |
| 5280 | |
| 5281 case SCSI_VHCI_PATH_ONLINE: | |
| 5282 s = "PATH_ONLINE"; | |
| 5283 break; | |
| 5284 | |
| 5285 case SCSI_VHCI_PATH_OFFLINE: | |
| 5286 s = "PATH_OFFLINE"; | |
| 5287 break; | |
| 5288 | |
| 5289 case SCSI_VHCI_PATH_STANDBY: | |
| 5290 s = "PATH_STANDBY"; | |
| 5291 break; | |
| 5292 | |
| 5293 case SCSI_VHCI_PATH_TEST: | |
| 5294 s = "PATH_TEST"; | |
| 5295 break; | |
| 5296 | |
| 5297 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
| 5298 s = "SWITCH_TO_CNTLR"; | |
| 5299 break; | |
| 5300 case SCSI_VHCI_PATH_DISABLE: | |
| 5301 s = "PATH_DISABLE"; | |
| 5302 break; | |
| 5303 case SCSI_VHCI_PATH_ENABLE: | |
| 5304 s = "PATH_ENABLE"; | |
| 5305 break; | |
| 5306 | |
| 5307 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
| 5308 s = "GET_TARGET_LONGNAME"; | |
| 5309 break; | |
| 5310 | |
| 5311 #ifdef DEBUG | |
| 5312 case SCSI_VHCI_CONFIGURE_PHCI: | |
| 5313 s = "CONFIGURE_PHCI"; | |
| 5314 break; | |
| 5315 | |
| 5316 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
| 5317 s = "UNCONFIGURE_PHCI"; | |
| 5318 break; | |
| 5319 #endif | |
| 5320 | |
| 5321 default: | |
| 5322 s = "Unknown"; | |
| 5323 vhci_log(CE_NOTE, vdip, | |
| 5324 "!vhci%d: ioctl %x (unsupported ioctl)", instance, cmd); | |
| 5325 retval = ENOTSUP; | |
| 5326 break; | |
| 5327 } | |
| 5328 if (retval != 0) { | |
| 5329 goto end; | |
| 5330 } | |
| 5331 | |
| 5332 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci%d: ioctl <%s>", instance, s)); | |
| 5333 | |
| 5334 /* | |
| 5335 * Get IOCTL parameters from userland | |
| 5336 */ | |
| 5337 switch (cmd) { | |
| 5338 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
| 5339 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
| 5340 case SCSI_VHCI_GET_CLIENT_NAME: | |
| 5341 case SCSI_VHCI_PATH_ONLINE: | |
| 5342 case SCSI_VHCI_PATH_OFFLINE: | |
| 5343 case SCSI_VHCI_PATH_STANDBY: | |
| 5344 case SCSI_VHCI_PATH_TEST: | |
| 5345 case SCSI_VHCI_PATH_DISABLE: | |
| 5346 case SCSI_VHCI_PATH_ENABLE: | |
| 5347 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
| 5348 #ifdef DEBUG | |
| 5349 case SCSI_VHCI_CONFIGURE_PHCI: | |
| 5350 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
| 5351 #endif | |
| 5352 retval = vhci_get_iocdata((const void *)data, pioc, mode, s); | |
| 5353 break; | |
| 5354 | |
| 5355 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
| 5356 retval = vhci_get_iocswitchdata((const void *)data, piocsc, | |
| 5357 mode, s); | |
| 5358 break; | |
| 5359 } | |
| 5360 if (retval != 0) { | |
| 5361 goto end; | |
| 5362 } | |
| 5363 | |
| 5364 | |
| 5365 /* | |
| 5366 * Process the IOCTL | |
| 5367 */ | |
| 5368 switch (cmd) { | |
| 5369 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
| 5370 { | |
| 5371 uint_t num_paths; /* Num paths to client dev */ | |
| 5372 sv_path_info_t *upibuf = NULL; /* To keep userland values */ | |
| 5373 sv_path_info_t *kpibuf = NULL; /* Kernel data for ioctls */ | |
| 5374 dev_info_t *cdip; /* Client device dip */ | |
| 5375 | |
| 5376 if (pioc->ret_elem == NULL) { | |
| 5377 retval = EINVAL; | |
| 5378 break; | |
| 5379 } | |
| 5380 | |
| 5381 /* Get client device path from user land */ | |
| 5382 if (vhci_ioc_get_client_path(pioc, client_path, mode, s)) { | |
| 5383 retval = EFAULT; | |
| 5384 break; | |
| 5385 } | |
| 5386 | |
| 5387 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5388 "client <%s>", s, client_path)); | |
| 5389 | |
| 5390 /* Get number of paths to this client device */ | |
| 5391 if ((cdip = mdi_client_path2devinfo(vdip, client_path)) | |
| 5392 == NULL) { | |
| 5393 retval = ENXIO; | |
| 5394 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5395 "client dip doesn't exist. invalid path <%s>", | |
| 5396 s, client_path)); | |
| 5397 break; | |
| 5398 } | |
| 5399 num_paths = mdi_client_get_path_count(cdip); | |
| 5400 | |
| 5401 if (ddi_copyout(&num_paths, pioc->ret_elem, | |
| 5402 sizeof (num_paths), mode)) { | |
| 5403 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5404 "num_paths copyout failed", s)); | |
| 5405 retval = EFAULT; | |
| 5406 break; | |
| 5407 } | |
| 5408 | |
| 5409 /* If user just wanted num_paths, then return */ | |
| 5410 if (pioc->buf_elem == 0 || pioc->ret_buf == NULL || | |
| 5411 num_paths == 0) { | |
| 5412 break; | |
| 5413 } | |
| 5414 | |
| 5415 /* Set num_paths to value as much as can be sent to userland */ | |
| 5416 if (num_paths > pioc->buf_elem) { | |
| 5417 num_paths = pioc->buf_elem; | |
| 5418 } | |
| 5419 | |
| 5420 /* Allocate memory and get userland pointers */ | |
| 5421 if (vhci_ioc_alloc_pathinfo(&upibuf, &kpibuf, num_paths, | |
| 5422 pioc, mode, s) != 0) { | |
| 5423 retval = EFAULT; | |
| 5424 break; | |
| 5425 } | |
| 5426 ASSERT(upibuf != NULL); | |
| 5427 ASSERT(kpibuf != NULL); | |
| 5428 | |
| 5429 /* | |
| 5430 * Get the path information and send it to userland. | |
| 5431 */ | |
| 5432 if (vhci_get_client_path_list(cdip, kpibuf, num_paths) | |
| 5433 != MDI_SUCCESS) { | |
| 5434 retval = ENXIO; | |
| 5435 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5436 break; | |
| 5437 } | |
| 5438 | |
| 5439 if (vhci_ioc_send_pathinfo(upibuf, kpibuf, num_paths, | |
| 5440 pioc, mode, s)) { | |
| 5441 retval = EFAULT; | |
| 5442 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5443 break; | |
| 5444 } | |
| 5445 | |
| 5446 /* Free the memory allocated for path information */ | |
| 5447 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5448 break; | |
| 5449 } | |
| 5450 | |
| 5451 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
| 5452 { | |
| 5453 uint_t num_paths; /* Num paths to client dev */ | |
| 5454 sv_path_info_t *upibuf = NULL; /* To keep userland values */ | |
| 5455 sv_path_info_t *kpibuf = NULL; /* Kernel data for ioctls */ | |
| 5456 dev_info_t *pdip; /* PHCI device dip */ | |
| 5457 | |
| 5458 if (pioc->ret_elem == NULL) { | |
| 5459 retval = EINVAL; | |
| 5460 break; | |
| 5461 } | |
| 5462 | |
| 5463 /* Get PHCI device path from user land */ | |
| 5464 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5465 retval = EFAULT; | |
| 5466 break; | |
| 5467 } | |
| 5468 | |
| 5469 VHCI_DEBUG(6, (CE_WARN, vdip, | |
| 5470 "!vhci_ioctl: ioctl <%s> phci <%s>", s, phci_path)); | |
| 5471 | |
| 5472 /* Get number of devices associated with this PHCI device */ | |
| 5473 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5474 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5475 "phci dip doesn't exist. invalid path <%s>", | |
| 5476 s, phci_path)); | |
| 5477 retval = ENXIO; | |
| 5478 break; | |
| 5479 } | |
| 5480 | |
| 5481 num_paths = mdi_phci_get_path_count(pdip); | |
| 5482 | |
| 5483 if (ddi_copyout(&num_paths, pioc->ret_elem, | |
| 5484 sizeof (num_paths), mode)) { | |
| 5485 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5486 "num_paths copyout failed", s)); | |
| 5487 retval = EFAULT; | |
| 5488 break; | |
| 5489 } | |
| 5490 | |
| 5491 /* If user just wanted num_paths, then return */ | |
| 5492 if (pioc->buf_elem == 0 || pioc->ret_buf == NULL || | |
| 5493 num_paths == 0) { | |
| 5494 break; | |
| 5495 } | |
| 5496 | |
| 5497 /* Set num_paths to value as much as can be sent to userland */ | |
| 5498 if (num_paths > pioc->buf_elem) { | |
| 5499 num_paths = pioc->buf_elem; | |
| 5500 } | |
| 5501 | |
| 5502 /* Allocate memory and get userland pointers */ | |
| 5503 if (vhci_ioc_alloc_pathinfo(&upibuf, &kpibuf, num_paths, | |
| 5504 pioc, mode, s) != 0) { | |
| 5505 retval = EFAULT; | |
| 5506 break; | |
| 5507 } | |
| 5508 ASSERT(upibuf != NULL); | |
| 5509 ASSERT(kpibuf != NULL); | |
| 5510 | |
| 5511 /* | |
| 5512 * Get the path information and send it to userland. | |
| 5513 */ | |
| 5514 if (vhci_get_phci_path_list(pdip, kpibuf, num_paths) | |
| 5515 != MDI_SUCCESS) { | |
| 5516 retval = ENXIO; | |
| 5517 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5518 break; | |
| 5519 } | |
| 5520 | |
| 5521 if (vhci_ioc_send_pathinfo(upibuf, kpibuf, num_paths, | |
| 5522 pioc, mode, s)) { | |
| 5523 retval = EFAULT; | |
| 5524 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5525 break; | |
| 5526 } | |
| 5527 | |
| 5528 /* Free the memory allocated for path information */ | |
| 5529 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
| 5530 break; | |
| 5531 } | |
| 5532 | |
| 5533 case SCSI_VHCI_GET_CLIENT_NAME: | |
| 5534 { | |
| 5535 dev_info_t *cdip, *pdip; | |
| 5536 | |
| 5537 /* Get PHCI path and device address from user land */ | |
| 5538 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s) || | |
| 5539 vhci_ioc_get_paddr(pioc, paddr, mode, s)) { | |
| 5540 retval = EFAULT; | |
| 5541 break; | |
| 5542 } | |
| 5543 | |
| 5544 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5545 "phci <%s>, paddr <%s>", s, phci_path, paddr)); | |
| 5546 | |
| 5547 /* Get the PHCI dip */ | |
| 5548 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5549 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5550 "phci dip doesn't exist. invalid path <%s>", | |
| 5551 s, phci_path)); | |
| 5552 retval = ENXIO; | |
| 5553 break; | |
| 5554 } | |
| 5555 | |
| 5556 if ((pip = mdi_pi_find(pdip, NULL, paddr)) == NULL) { | |
| 5557 VHCI_DEBUG(1, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5558 "pathinfo doesn't exist. invalid device addr", s)); | |
| 5559 retval = ENXIO; | |
| 5560 break; | |
| 5561 } | |
| 5562 | |
| 5563 /* Get the client device pathname and send to userland */ | |
| 5564 cdip = mdi_pi_get_client(pip); | |
| 5565 vhci_ioc_devi_to_path(cdip, client_path); | |
| 5566 | |
| 5567 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5568 "client <%s>", s, client_path)); | |
| 5569 | |
| 5570 if (vhci_ioc_send_client_path(client_path, pioc, mode, s)) { | |
| 5571 retval = EFAULT; | |
| 5572 break; | |
| 5573 } | |
| 5574 break; | |
| 5575 } | |
| 5576 | |
| 5577 case SCSI_VHCI_PATH_ONLINE: | |
| 5578 case SCSI_VHCI_PATH_OFFLINE: | |
| 5579 case SCSI_VHCI_PATH_STANDBY: | |
| 5580 case SCSI_VHCI_PATH_TEST: | |
| 5581 { | |
| 5582 dev_info_t *pdip; /* PHCI dip */ | |
| 5583 | |
| 5584 /* Get PHCI path and device address from user land */ | |
| 5585 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s) || | |
| 5586 vhci_ioc_get_paddr(pioc, paddr, mode, s)) { | |
| 5587 retval = EFAULT; | |
| 5588 break; | |
| 5589 } | |
| 5590 | |
| 5591 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5592 "phci <%s>, paddr <%s>", s, phci_path, paddr)); | |
| 5593 | |
| 5594 /* Get the PHCI dip */ | |
| 5595 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5596 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5597 "phci dip doesn't exist. invalid path <%s>", | |
| 5598 s, phci_path)); | |
| 5599 retval = ENXIO; | |
| 5600 break; | |
| 5601 } | |
| 5602 | |
| 5603 if ((pip = mdi_pi_find(pdip, NULL, paddr)) == NULL) { | |
| 5604 VHCI_DEBUG(1, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5605 "pathinfo doesn't exist. invalid device addr", s)); | |
| 5606 retval = ENXIO; | |
| 5607 break; | |
| 5608 } | |
| 5609 | |
| 5610 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5611 "Calling MDI function to change device state", s)); | |
| 5612 | |
| 5613 switch (cmd) { | |
| 5614 case SCSI_VHCI_PATH_ONLINE: | |
| 5615 retval = mdi_pi_online(pip, 0); | |
| 5616 break; | |
| 5617 | |
| 5618 case SCSI_VHCI_PATH_OFFLINE: | |
| 5619 retval = mdi_pi_offline(pip, 0); | |
| 5620 break; | |
| 5621 | |
| 5622 case SCSI_VHCI_PATH_STANDBY: | |
| 5623 retval = mdi_pi_standby(pip, 0); | |
| 5624 break; | |
| 5625 | |
| 5626 case SCSI_VHCI_PATH_TEST: | |
| 5627 break; | |
| 5628 } | |
| 5629 break; | |
| 5630 } | |
| 5631 | |
| 5632 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
| 5633 { | |
| 5634 dev_info_t *cdip; | |
| 5635 struct scsi_device *devp; | |
| 5636 | |
| 5637 /* Get the client device pathname */ | |
| 5638 if (ddi_copyin(piocsc->client, client_path, | |
| 5639 MAXPATHLEN, mode)) { | |
| 5640 VHCI_DEBUG(2, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5641 "client_path copyin failed", s)); | |
| 5642 retval = EFAULT; | |
| 5643 break; | |
| 5644 } | |
| 5645 | |
| 5646 /* Get the path class to which user wants to switch */ | |
| 5647 if (ddi_copyin(piocsc->class, paddr, MAXNAMELEN, mode)) { | |
| 5648 VHCI_DEBUG(2, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5649 "controller_class copyin failed", s)); | |
| 5650 retval = EFAULT; | |
| 5651 break; | |
| 5652 } | |
| 5653 | |
| 5654 /* Perform validity checks */ | |
| 5655 if ((cdip = mdi_client_path2devinfo(vdip, | |
| 5656 client_path)) == NULL) { | |
| 5657 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5658 "client dip doesn't exist. invalid path <%s>", | |
| 5659 s, client_path)); | |
| 5660 retval = ENXIO; | |
| 5661 break; | |
| 5662 } | |
| 5663 | |
| 5664 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: Calling MDI func " | |
| 5665 "to switch controller")); | |
| 5666 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: client <%s> " | |
| 5667 "class <%s>", client_path, paddr)); | |
| 5668 | |
| 5669 if (strcmp(paddr, PCLASS_PRIMARY) && | |
| 5670 strcmp(paddr, PCLASS_SECONDARY)) { | |
| 5671 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5672 "invalid path class <%s>", s, paddr)); | |
| 5673 retval = ENXIO; | |
| 5674 break; | |
| 5675 } | |
| 5676 | |
| 5677 devp = ddi_get_driver_private(cdip); | |
| 5678 if (devp == NULL) { | |
| 5679 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5680 "invalid scsi device <%s>", s, client_path)); | |
| 5681 retval = ENXIO; | |
| 5682 break; | |
| 5683 } | |
| 5684 vlun = ADDR2VLUN(&devp->sd_address); | |
| 5685 ASSERT(vlun); | |
| 5686 | |
| 5687 /* | |
| 5688 * Checking to see if device has only one pclass, PRIMARY. | |
| 5689 * If so this device doesn't support failovers. Assumed | |
| 5690 * that the devices with one pclass is PRIMARY, as thats the | |
| 5691 * case today. If this is not true and in future other | |
| 5692 * symmetric devices are supported with other pclass, this | |
| 5693 * IOCTL shall have to be overhauled anyways as now the only | |
| 5694 * arguments it accepts are PRIMARY and SECONDARY. | |
| 5695 */ | |
| 5696 fo = vlun->svl_fops; | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
5697 if (fo->sfo_pathclass_next(PCLASS_PRIMARY, &pclass, |
| 4851 | 5698 vlun->svl_fops_ctpriv)) { |
| 5699 retval = ENOTSUP; | |
| 5700 break; | |
| 5701 } | |
| 5702 | |
| 5703 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
| 5704 mutex_enter(&vlun->svl_mutex); | |
| 5705 if (vlun->svl_active_pclass != NULL) { | |
| 5706 if (strcmp(vlun->svl_active_pclass, paddr) == 0) { | |
| 5707 mutex_exit(&vlun->svl_mutex); | |
| 5708 retval = EALREADY; | |
| 5709 VHCI_RELEASE_LUN(vlun); | |
| 5710 break; | |
| 5711 } | |
| 5712 } | |
| 5713 mutex_exit(&vlun->svl_mutex); | |
| 5714 /* Call mdi function to cause a switch over */ | |
| 5715 retval = mdi_failover(vdip, cdip, MDI_FAILOVER_SYNC); | |
| 5716 if (retval == MDI_SUCCESS) { | |
| 5717 retval = 0; | |
| 5718 } else if (retval == MDI_BUSY) { | |
| 5719 retval = EBUSY; | |
| 5720 } else { | |
| 5721 retval = EIO; | |
| 5722 } | |
| 5723 VHCI_RELEASE_LUN(vlun); | |
| 5724 break; | |
| 5725 } | |
| 5726 | |
| 5727 case SCSI_VHCI_PATH_ENABLE: | |
| 5728 case SCSI_VHCI_PATH_DISABLE: | |
| 5729 { | |
| 5730 dev_info_t *cdip, *pdip; | |
| 5731 | |
| 5732 /* | |
| 5733 * Get client device path from user land | |
| 5734 */ | |
| 5735 if (vhci_ioc_get_client_path(pioc, client_path, mode, s)) { | |
| 5736 retval = EFAULT; | |
| 5737 break; | |
| 5738 } | |
| 5739 | |
| 5740 /* | |
| 5741 * Get Phci device path from user land | |
| 5742 */ | |
| 5743 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5744 retval = EFAULT; | |
| 5745 break; | |
| 5746 } | |
| 5747 | |
| 5748 /* | |
| 5749 * Get the devinfo for the Phci. | |
| 5750 */ | |
| 5751 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
| 5752 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5753 "phci dip doesn't exist. invalid path <%s>", | |
| 5754 s, phci_path)); | |
| 5755 retval = ENXIO; | |
| 5756 break; | |
| 5757 } | |
| 5758 | |
| 5759 /* | |
| 5760 * If the client path is set to /scsi_vhci then we need | |
| 5761 * to do the operation on all the clients so set cdip to NULL. | |
| 5762 * Else, try to get the client dip. | |
| 5763 */ | |
| 5764 if (strcmp(client_path, "/scsi_vhci") == 0) { | |
| 5765 cdip = NULL; | |
| 5766 } else { | |
| 5767 if ((cdip = mdi_client_path2devinfo(vdip, | |
| 5768 client_path)) == NULL) { | |
| 5769 retval = ENXIO; | |
| 5770 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 5771 "!vhci_ioctl: ioctl <%s> client dip " | |
| 5772 "doesn't exist. invalid path <%s>", | |
| 5773 s, client_path)); | |
| 5774 break; | |
| 5775 } | |
| 5776 } | |
| 5777 | |
| 5778 if (cmd == SCSI_VHCI_PATH_ENABLE) | |
| 5779 retval = mdi_pi_enable(cdip, pdip, USER_DISABLE); | |
| 5780 else | |
| 5781 retval = mdi_pi_disable(cdip, pdip, USER_DISABLE); | |
| 5782 | |
| 5783 break; | |
| 5784 } | |
| 5785 | |
| 5786 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
| 5787 { | |
| 5788 uint_t pid = pioc->buf_elem; | |
| 5789 char *target_port; | |
| 5790 mod_hash_val_t hv; | |
| 5791 | |
| 5792 /* targetmap lookup of 'target-port' by <pid> */ | |
| 5793 if (mod_hash_find(vhci_targetmap_bypid, | |
| 5794 (mod_hash_key_t)(uintptr_t)pid, &hv) != 0) { | |
| 5795 /* | |
| 5796 * NOTE: failure to find the mapping is OK for guid | |
| 5797 * based 'target-port' values. | |
| 5798 */ | |
| 5799 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5800 "targetport mapping doesn't exist: pid %d", | |
| 5801 s, pid)); | |
| 5802 retval = ENXIO; | |
| 5803 break; | |
| 5804 } | |
| 5805 | |
| 5806 /* copyout 'target-port' result */ | |
| 5807 target_port = (char *)hv; | |
| 5808 if (copyoutstr(target_port, pioc->addr, MAXNAMELEN, NULL)) { | |
| 5809 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5810 "targetport copyout failed: len: %d", | |
| 5811 s, (int)strlen(target_port))); | |
| 5812 retval = EFAULT; | |
| 5813 } | |
| 5814 break; | |
| 5815 } | |
| 5816 | |
| 5817 #ifdef DEBUG | |
| 5818 case SCSI_VHCI_CONFIGURE_PHCI: | |
| 5819 { | |
| 5820 dev_info_t *pdip; | |
| 5821 | |
| 5822 /* Get PHCI path and device address from user land */ | |
| 5823 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5824 retval = EFAULT; | |
| 5825 break; | |
| 5826 } | |
| 5827 | |
| 5828 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5829 "phci <%s>", s, phci_path)); | |
| 5830 | |
| 5831 /* Get the PHCI dip */ | |
| 5832 if ((pdip = e_ddi_hold_devi_by_path(phci_path, 0)) == NULL) { | |
| 5833 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5834 "phci dip doesn't exist. invalid path <%s>", | |
| 5835 s, phci_path)); | |
| 5836 retval = ENXIO; | |
| 5837 break; | |
| 5838 } | |
| 5839 | |
| 5840 if (ndi_devi_config(pdip, | |
| 5841 NDI_DEVFS_CLEAN|NDI_DEVI_PERSIST) != NDI_SUCCESS) { | |
| 5842 retval = EIO; | |
| 5843 } | |
| 5844 | |
| 5845 ddi_release_devi(pdip); | |
| 5846 break; | |
| 5847 } | |
| 5848 | |
| 5849 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
| 5850 { | |
| 5851 dev_info_t *pdip; | |
| 5852 | |
| 5853 /* Get PHCI path and device address from user land */ | |
| 5854 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
| 5855 retval = EFAULT; | |
| 5856 break; | |
| 5857 } | |
| 5858 | |
| 5859 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
| 5860 "phci <%s>", s, phci_path)); | |
| 5861 | |
| 5862 /* Get the PHCI dip */ | |
| 5863 if ((pdip = e_ddi_hold_devi_by_path(phci_path, 0)) == NULL) { | |
| 5864 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
| 5865 "phci dip doesn't exist. invalid path <%s>", | |
| 5866 s, phci_path)); | |
| 5867 retval = ENXIO; | |
| 5868 break; | |
| 5869 } | |
| 5870 | |
| 5871 if (ndi_devi_unconfig(pdip, | |
| 5872 NDI_DEVI_REMOVE|NDI_DEVFS_CLEAN) != NDI_SUCCESS) { | |
| 5873 retval = EBUSY; | |
| 5874 } | |
| 5875 | |
| 5876 ddi_release_devi(pdip); | |
| 5877 break; | |
| 5878 } | |
| 5879 #endif | |
| 5880 } | |
| 5881 | |
| 5882 end: | |
| 5883 /* Free the memory allocated above */ | |
| 5884 if (phci_path != NULL) { | |
| 5885 kmem_free(phci_path, MAXPATHLEN); | |
| 5886 } | |
| 5887 if (client_path != NULL) { | |
| 5888 kmem_free(client_path, MAXPATHLEN); | |
| 5889 } | |
| 5890 if (paddr != NULL) { | |
| 5891 kmem_free(paddr, MAXNAMELEN); | |
| 5892 } | |
| 5893 return (retval); | |
| 5894 } | |
| 5895 | |
| 5896 /* | |
| 5897 * devctl IOCTL support for client device DR | |
| 5898 */ | |
| 5899 /* ARGSUSED */ | |
| 5900 int | |
| 5901 vhci_devctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, | |
| 5902 int *rvalp) | |
| 5903 { | |
| 5904 dev_info_t *self; | |
| 5905 dev_info_t *child; | |
| 5906 scsi_hba_tran_t *hba; | |
| 5907 struct devctl_iocdata *dcp; | |
| 5908 struct scsi_vhci *vhci; | |
| 5909 int rv = 0; | |
| 5910 int retval = 0; | |
| 5911 scsi_vhci_priv_t *svp; | |
| 5912 mdi_pathinfo_t *pip; | |
| 5913 | |
| 5914 if ((vhci = ddi_get_soft_state(vhci_softstate, | |
| 5915 MINOR2INST(getminor(dev)))) == NULL) | |
| 5916 return (ENXIO); | |
| 5917 | |
| 5918 /* | |
| 5919 * check if :devctl minor device has been opened | |
| 5920 */ | |
| 5921 mutex_enter(&vhci->vhci_mutex); | |
| 5922 if ((vhci->vhci_state & VHCI_STATE_OPEN) == 0) { | |
| 5923 mutex_exit(&vhci->vhci_mutex); | |
| 5924 return (ENXIO); | |
| 5925 } | |
| 5926 mutex_exit(&vhci->vhci_mutex); | |
| 5927 | |
| 5928 self = vhci->vhci_dip; | |
| 5929 hba = ddi_get_driver_private(self); | |
| 5930 if (hba == NULL) | |
| 5931 return (ENXIO); | |
| 5932 | |
| 5933 /* | |
| 5934 * We can use the generic implementation for these ioctls | |
| 5935 */ | |
| 5936 switch (cmd) { | |
| 5937 case DEVCTL_DEVICE_GETSTATE: | |
| 5938 case DEVCTL_DEVICE_ONLINE: | |
| 5939 case DEVCTL_DEVICE_OFFLINE: | |
| 5940 case DEVCTL_DEVICE_REMOVE: | |
| 5941 case DEVCTL_BUS_GETSTATE: | |
| 5942 return (ndi_devctl_ioctl(self, cmd, arg, mode, 0)); | |
| 5943 } | |
| 5944 | |
| 5945 /* | |
| 5946 * read devctl ioctl data | |
| 5947 */ | |
| 5948 if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) | |
| 5949 return (EFAULT); | |
| 5950 | |
| 5951 switch (cmd) { | |
| 5952 | |
| 5953 case DEVCTL_DEVICE_RESET: | |
| 5954 /* | |
| 5955 * lookup and hold child device | |
| 5956 */ | |
| 5957 if ((child = ndi_devi_find(self, ndi_dc_getname(dcp), | |
| 5958 ndi_dc_getaddr(dcp))) == NULL) { | |
| 5959 rv = ENXIO; | |
| 5960 break; | |
| 5961 } | |
| 5962 retval = mdi_select_path(child, NULL, | |
| 5963 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
| 5964 NULL, &pip); | |
| 5965 if ((retval != MDI_SUCCESS) || (pip == NULL)) { | |
| 5966 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl:" | |
| 5967 "Unable to get a path, dip 0x%p", (void *)child)); | |
| 5968 rv = ENXIO; | |
| 5969 break; | |
| 5970 } | |
| 5971 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 5972 if (vhci_recovery_reset(svp->svp_svl, | |
| 5973 &svp->svp_psd->sd_address, TRUE, | |
| 5974 VHCI_DEPTH_TARGET) == 0) { | |
| 5975 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 5976 "!vhci_ioctl(pip:%p): " | |
| 5977 "reset failed\n", (void *)pip)); | |
| 5978 rv = ENXIO; | |
| 5979 } | |
| 5980 mdi_rele_path(pip); | |
| 5981 break; | |
| 5982 | |
| 5983 case DEVCTL_BUS_QUIESCE: | |
| 5984 case DEVCTL_BUS_UNQUIESCE: | |
| 5985 case DEVCTL_BUS_RESET: | |
| 5986 case DEVCTL_BUS_RESETALL: | |
| 5987 #ifdef DEBUG | |
| 5988 case DEVCTL_BUS_CONFIGURE: | |
| 5989 case DEVCTL_BUS_UNCONFIGURE: | |
| 5990 #endif | |
| 5991 rv = ENOTSUP; | |
| 5992 break; | |
| 5993 | |
| 5994 default: | |
| 5995 rv = ENOTTY; | |
| 5996 } /* end of outer switch */ | |
| 5997 | |
| 5998 ndi_dc_freehdl(dcp); | |
| 5999 return (rv); | |
| 6000 } | |
| 6001 | |
| 6002 /* | |
| 6003 * Routine to get the PHCI pathname from ioctl structures in userland | |
| 6004 */ | |
| 6005 /* ARGSUSED */ | |
| 6006 static int | |
| 6007 vhci_ioc_get_phci_path(sv_iocdata_t *pioc, caddr_t phci_path, | |
| 6008 int mode, caddr_t s) | |
| 6009 { | |
| 6010 int retval = 0; | |
| 6011 | |
| 6012 if (ddi_copyin(pioc->phci, phci_path, MAXPATHLEN, mode)) { | |
| 6013 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_phci: ioctl <%s> " | |
| 6014 "phci_path copyin failed", s)); | |
| 6015 retval = EFAULT; | |
| 6016 } | |
| 6017 return (retval); | |
| 6018 | |
| 6019 } | |
| 6020 | |
| 6021 | |
| 6022 /* | |
| 6023 * Routine to get the Client device pathname from ioctl structures in userland | |
| 6024 */ | |
| 6025 /* ARGSUSED */ | |
| 6026 static int | |
| 6027 vhci_ioc_get_client_path(sv_iocdata_t *pioc, caddr_t client_path, | |
| 6028 int mode, caddr_t s) | |
| 6029 { | |
| 6030 int retval = 0; | |
| 6031 | |
| 6032 if (ddi_copyin(pioc->client, client_path, MAXPATHLEN, mode)) { | |
| 6033 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_client: " | |
| 6034 "ioctl <%s> client_path copyin failed", s)); | |
| 6035 retval = EFAULT; | |
| 6036 } | |
| 6037 return (retval); | |
| 6038 } | |
| 6039 | |
| 6040 | |
| 6041 /* | |
| 6042 * Routine to get physical device address from ioctl structure in userland | |
| 6043 */ | |
| 6044 /* ARGSUSED */ | |
| 6045 static int | |
| 6046 vhci_ioc_get_paddr(sv_iocdata_t *pioc, caddr_t paddr, int mode, caddr_t s) | |
| 6047 { | |
| 6048 int retval = 0; | |
| 6049 | |
| 6050 if (ddi_copyin(pioc->addr, paddr, MAXNAMELEN, mode)) { | |
| 6051 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_paddr: " | |
| 6052 "ioctl <%s> device addr copyin failed", s)); | |
| 6053 retval = EFAULT; | |
| 6054 } | |
| 6055 return (retval); | |
| 6056 } | |
| 6057 | |
| 6058 | |
| 6059 /* | |
| 6060 * Routine to send client device pathname to userland. | |
| 6061 */ | |
| 6062 /* ARGSUSED */ | |
| 6063 static int | |
| 6064 vhci_ioc_send_client_path(caddr_t client_path, sv_iocdata_t *pioc, | |
| 6065 int mode, caddr_t s) | |
| 6066 { | |
| 6067 int retval = 0; | |
| 6068 | |
| 6069 if (ddi_copyout(client_path, pioc->client, MAXPATHLEN, mode)) { | |
| 6070 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_send_client: " | |
| 6071 "ioctl <%s> client_path copyout failed", s)); | |
| 6072 retval = EFAULT; | |
| 6073 } | |
| 6074 return (retval); | |
| 6075 } | |
| 6076 | |
| 6077 | |
| 6078 /* | |
| 6079 * Routine to translated dev_info pointer (dip) to device pathname. | |
| 6080 */ | |
| 6081 static void | |
| 6082 vhci_ioc_devi_to_path(dev_info_t *dip, caddr_t path) | |
| 6083 { | |
| 6084 (void) ddi_pathname(dip, path); | |
| 6085 } | |
| 6086 | |
| 6087 | |
| 6088 /* | |
| 6089 * vhci_get_phci_path_list: | |
| 6090 * get information about devices associated with a | |
| 6091 * given PHCI device. | |
| 6092 * | |
| 6093 * Return Values: | |
| 6094 * path information elements | |
| 6095 */ | |
| 6096 int | |
| 6097 vhci_get_phci_path_list(dev_info_t *pdip, sv_path_info_t *pibuf, | |
| 6098 uint_t num_elems) | |
| 6099 { | |
| 6100 uint_t count, done; | |
| 6101 mdi_pathinfo_t *pip; | |
| 6102 sv_path_info_t *ret_pip; | |
| 6103 int status; | |
| 6104 size_t prop_size; | |
| 6105 int circular; | |
| 6106 | |
| 6107 /* | |
| 6108 * Get the PHCI structure and retrieve the path information | |
| 6109 * from the GUID hash table. | |
| 6110 */ | |
| 6111 | |
| 6112 ret_pip = pibuf; | |
| 6113 count = 0; | |
| 6114 | |
| 6115 ndi_devi_enter(pdip, &circular); | |
| 6116 | |
| 6117 done = (count >= num_elems); | |
| 6118 pip = mdi_get_next_client_path(pdip, NULL); | |
| 6119 while (pip && !done) { | |
| 6120 mdi_pi_lock(pip); | |
| 6121 (void) ddi_pathname(mdi_pi_get_phci(pip), | |
| 6122 ret_pip->device.ret_phci); | |
| 6123 (void) strcpy(ret_pip->ret_addr, mdi_pi_get_addr(pip)); | |
| 6124 (void) mdi_pi_get_state2(pip, &ret_pip->ret_state, | |
| 6125 &ret_pip->ret_ext_state); | |
| 6126 | |
| 6127 status = mdi_prop_size(pip, &prop_size); | |
| 6128 if (status == MDI_SUCCESS && ret_pip->ret_prop.ret_buf_size) { | |
| 6129 *ret_pip->ret_prop.ret_buf_size = (uint_t)prop_size; | |
| 6130 } | |
| 6131 | |
| 6132 #ifdef DEBUG | |
| 6133 if (status != MDI_SUCCESS) { | |
| 6134 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6135 "!vhci_get_phci_path_list: " | |
| 6136 "phci <%s>, prop size failure 0x%x", | |
| 6137 ret_pip->device.ret_phci, status)); | |
| 6138 } | |
| 6139 #endif /* DEBUG */ | |
| 6140 | |
| 6141 | |
| 6142 if (status == MDI_SUCCESS && ret_pip->ret_prop.buf && | |
| 6143 prop_size && ret_pip->ret_prop.buf_size >= prop_size) { | |
| 6144 status = mdi_prop_pack(pip, | |
| 6145 &ret_pip->ret_prop.buf, | |
| 6146 ret_pip->ret_prop.buf_size); | |
| 6147 | |
| 6148 #ifdef DEBUG | |
| 6149 if (status != MDI_SUCCESS) { | |
| 6150 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6151 "!vhci_get_phci_path_list: " | |
| 6152 "phci <%s>, prop pack failure 0x%x", | |
| 6153 ret_pip->device.ret_phci, status)); | |
| 6154 } | |
| 6155 #endif /* DEBUG */ | |
| 6156 } | |
| 6157 | |
| 6158 mdi_pi_unlock(pip); | |
| 6159 pip = mdi_get_next_client_path(pdip, pip); | |
| 6160 ret_pip++; | |
| 6161 count++; | |
| 6162 done = (count >= num_elems); | |
| 6163 } | |
| 6164 | |
| 6165 ndi_devi_exit(pdip, circular); | |
| 6166 | |
| 6167 return (MDI_SUCCESS); | |
| 6168 } | |
| 6169 | |
| 6170 | |
| 6171 /* | |
| 6172 * vhci_get_client_path_list: | |
| 6173 * get information about various paths associated with a | |
| 6174 * given client device. | |
| 6175 * | |
| 6176 * Return Values: | |
| 6177 * path information elements | |
| 6178 */ | |
| 6179 int | |
| 6180 vhci_get_client_path_list(dev_info_t *cdip, sv_path_info_t *pibuf, | |
| 6181 uint_t num_elems) | |
| 6182 { | |
| 6183 uint_t count, done; | |
| 6184 mdi_pathinfo_t *pip; | |
| 6185 sv_path_info_t *ret_pip; | |
| 6186 int status; | |
| 6187 size_t prop_size; | |
| 6188 int circular; | |
| 6189 | |
| 6190 ret_pip = pibuf; | |
| 6191 count = 0; | |
| 6192 | |
| 6193 ndi_devi_enter(cdip, &circular); | |
| 6194 | |
| 6195 done = (count >= num_elems); | |
| 6196 pip = mdi_get_next_phci_path(cdip, NULL); | |
| 6197 while (pip && !done) { | |
| 6198 mdi_pi_lock(pip); | |
| 6199 (void) ddi_pathname(mdi_pi_get_phci(pip), | |
| 6200 ret_pip->device.ret_phci); | |
| 6201 (void) strcpy(ret_pip->ret_addr, mdi_pi_get_addr(pip)); | |
| 6202 (void) mdi_pi_get_state2(pip, &ret_pip->ret_state, | |
| 6203 &ret_pip->ret_ext_state); | |
| 6204 | |
| 6205 status = mdi_prop_size(pip, &prop_size); | |
| 6206 if (status == MDI_SUCCESS && ret_pip->ret_prop.ret_buf_size) { | |
| 6207 *ret_pip->ret_prop.ret_buf_size = (uint_t)prop_size; | |
| 6208 } | |
| 6209 | |
| 6210 #ifdef DEBUG | |
| 6211 if (status != MDI_SUCCESS) { | |
| 6212 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6213 "!vhci_get_client_path_list: " | |
| 6214 "phci <%s>, prop size failure 0x%x", | |
| 6215 ret_pip->device.ret_phci, status)); | |
| 6216 } | |
| 6217 #endif /* DEBUG */ | |
| 6218 | |
| 6219 | |
| 6220 if (status == MDI_SUCCESS && ret_pip->ret_prop.buf && | |
| 6221 prop_size && ret_pip->ret_prop.buf_size >= prop_size) { | |
| 6222 status = mdi_prop_pack(pip, | |
| 6223 &ret_pip->ret_prop.buf, | |
| 6224 ret_pip->ret_prop.buf_size); | |
| 6225 | |
| 6226 #ifdef DEBUG | |
| 6227 if (status != MDI_SUCCESS) { | |
| 6228 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 6229 "!vhci_get_client_path_list: " | |
| 6230 "phci <%s>, prop pack failure 0x%x", | |
| 6231 ret_pip->device.ret_phci, status)); | |
| 6232 } | |
| 6233 #endif /* DEBUG */ | |
| 6234 } | |
| 6235 | |
| 6236 mdi_pi_unlock(pip); | |
| 6237 pip = mdi_get_next_phci_path(cdip, pip); | |
| 6238 ret_pip++; | |
| 6239 count++; | |
| 6240 done = (count >= num_elems); | |
| 6241 } | |
| 6242 | |
| 6243 ndi_devi_exit(cdip, circular); | |
| 6244 | |
| 6245 return (MDI_SUCCESS); | |
| 6246 } | |
| 6247 | |
| 6248 | |
| 6249 /* | |
| 6250 * Routine to get ioctl argument structure from userland. | |
| 6251 */ | |
| 6252 /* ARGSUSED */ | |
| 6253 static int | |
| 6254 vhci_get_iocdata(const void *data, sv_iocdata_t *pioc, int mode, caddr_t s) | |
| 6255 { | |
| 6256 int retval = 0; | |
| 6257 | |
| 6258 #ifdef _MULTI_DATAMODEL | |
| 6259 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6260 case DDI_MODEL_ILP32: | |
| 6261 { | |
| 6262 sv_iocdata32_t ioc32; | |
| 6263 | |
| 6264 if (ddi_copyin(data, &ioc32, sizeof (ioc32), mode)) { | |
| 6265 retval = EFAULT; | |
| 6266 break; | |
| 6267 } | |
| 6268 pioc->client = (caddr_t)(uintptr_t)ioc32.client; | |
| 6269 pioc->phci = (caddr_t)(uintptr_t)ioc32.phci; | |
| 6270 pioc->addr = (caddr_t)(uintptr_t)ioc32.addr; | |
| 6271 pioc->buf_elem = (uint_t)ioc32.buf_elem; | |
| 6272 pioc->ret_buf = (sv_path_info_t *)(uintptr_t)ioc32.ret_buf; | |
| 6273 pioc->ret_elem = (uint_t *)(uintptr_t)ioc32.ret_elem; | |
| 6274 break; | |
| 6275 } | |
| 6276 | |
| 6277 case DDI_MODEL_NONE: | |
| 6278 if (ddi_copyin(data, pioc, sizeof (*pioc), mode)) { | |
| 6279 retval = EFAULT; | |
| 6280 break; | |
| 6281 } | |
| 6282 break; | |
| 6283 } | |
| 6284 #else /* _MULTI_DATAMODEL */ | |
| 6285 if (ddi_copyin(data, pioc, sizeof (*pioc), mode)) { | |
| 6286 retval = EFAULT; | |
| 6287 } | |
| 6288 #endif /* _MULTI_DATAMODEL */ | |
| 6289 | |
| 6290 #ifdef DEBUG | |
| 6291 if (retval) { | |
| 6292 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: cmd <%s> " | |
| 6293 "iocdata copyin failed", s)); | |
| 6294 } | |
| 6295 #endif | |
| 6296 | |
| 6297 return (retval); | |
| 6298 } | |
| 6299 | |
| 6300 | |
| 6301 /* | |
| 6302 * Routine to get the ioctl argument for ioctl causing controller switchover. | |
| 6303 */ | |
| 6304 /* ARGSUSED */ | |
| 6305 static int | |
| 6306 vhci_get_iocswitchdata(const void *data, sv_switch_to_cntlr_iocdata_t *piocsc, | |
| 6307 int mode, caddr_t s) | |
| 6308 { | |
| 6309 int retval = 0; | |
| 6310 | |
| 6311 #ifdef _MULTI_DATAMODEL | |
| 6312 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6313 case DDI_MODEL_ILP32: | |
| 6314 { | |
| 6315 sv_switch_to_cntlr_iocdata32_t ioc32; | |
| 6316 | |
| 6317 if (ddi_copyin(data, &ioc32, sizeof (ioc32), mode)) { | |
| 6318 retval = EFAULT; | |
| 6319 break; | |
| 6320 } | |
| 6321 piocsc->client = (caddr_t)(uintptr_t)ioc32.client; | |
| 6322 piocsc->class = (caddr_t)(uintptr_t)ioc32.class; | |
| 6323 break; | |
| 6324 } | |
| 6325 | |
| 6326 case DDI_MODEL_NONE: | |
| 6327 if (ddi_copyin(data, piocsc, sizeof (*piocsc), mode)) { | |
| 6328 retval = EFAULT; | |
| 6329 } | |
| 6330 break; | |
| 6331 } | |
| 6332 #else /* _MULTI_DATAMODEL */ | |
| 6333 if (ddi_copyin(data, piocsc, sizeof (*piocsc), mode)) { | |
| 6334 retval = EFAULT; | |
| 6335 } | |
| 6336 #endif /* _MULTI_DATAMODEL */ | |
| 6337 | |
| 6338 #ifdef DEBUG | |
| 6339 if (retval) { | |
| 6340 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: cmd <%s> " | |
| 6341 "switch_to_cntlr_iocdata copyin failed", s)); | |
| 6342 } | |
| 6343 #endif | |
| 6344 | |
| 6345 return (retval); | |
| 6346 } | |
| 6347 | |
| 6348 | |
| 6349 /* | |
| 6350 * Routine to allocate memory for the path information structures. | |
| 6351 * It allocates two chunks of memory - one for keeping userland | |
| 6352 * pointers/values for path information and path properties, second for | |
| 6353 * keeping allocating kernel memory for path properties. These path | |
| 6354 * properties are finally copied to userland. | |
| 6355 */ | |
| 6356 /* ARGSUSED */ | |
| 6357 static int | |
| 6358 vhci_ioc_alloc_pathinfo(sv_path_info_t **upibuf, sv_path_info_t **kpibuf, | |
| 6359 uint_t num_paths, sv_iocdata_t *pioc, int mode, caddr_t s) | |
| 6360 { | |
| 6361 sv_path_info_t *pi; | |
| 6362 uint_t bufsize; | |
| 6363 int retval = 0; | |
| 6364 int index; | |
| 6365 | |
| 6366 /* Allocate memory */ | |
| 6367 *upibuf = (sv_path_info_t *) | |
| 6368 kmem_zalloc(sizeof (sv_path_info_t) * num_paths, KM_SLEEP); | |
| 6369 ASSERT(*upibuf != NULL); | |
| 6370 *kpibuf = (sv_path_info_t *) | |
| 6371 kmem_zalloc(sizeof (sv_path_info_t) * num_paths, KM_SLEEP); | |
| 6372 ASSERT(*kpibuf != NULL); | |
| 6373 | |
| 6374 /* | |
| 6375 * Get the path info structure from the user space. | |
| 6376 * We are interested in the following fields: | |
| 6377 * - user size of buffer for per path properties. | |
| 6378 * - user address of buffer for path info properties. | |
| 6379 * - user pointer for returning actual buffer size | |
| 6380 * Keep these fields in the 'upibuf' structures. | |
| 6381 * Allocate buffer for per path info properties in kernel | |
| 6382 * structure ('kpibuf'). | |
| 6383 * Size of these buffers will be equal to the size of buffers | |
| 6384 * in the user space. | |
| 6385 */ | |
| 6386 #ifdef _MULTI_DATAMODEL | |
| 6387 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6388 case DDI_MODEL_ILP32: | |
| 6389 { | |
| 6390 sv_path_info32_t *src; | |
| 6391 sv_path_info32_t pi32; | |
| 6392 | |
| 6393 src = (sv_path_info32_t *)pioc->ret_buf; | |
| 6394 pi = (sv_path_info_t *)*upibuf; | |
| 6395 for (index = 0; index < num_paths; index++, src++, pi++) { | |
| 6396 if (ddi_copyin(src, &pi32, sizeof (pi32), mode)) { | |
| 6397 retval = EFAULT; | |
| 6398 break; | |
| 6399 } | |
| 6400 | |
| 6401 pi->ret_prop.buf_size = | |
| 6402 (uint_t)pi32.ret_prop.buf_size; | |
| 6403 pi->ret_prop.ret_buf_size = | |
| 6404 (uint_t *)(uintptr_t)pi32.ret_prop.ret_buf_size; | |
| 6405 pi->ret_prop.buf = | |
| 6406 (caddr_t)(uintptr_t)pi32.ret_prop.buf; | |
| 6407 } | |
| 6408 break; | |
| 6409 } | |
| 6410 | |
| 6411 case DDI_MODEL_NONE: | |
| 6412 if (ddi_copyin(pioc->ret_buf, *upibuf, | |
| 6413 sizeof (sv_path_info_t) * num_paths, mode)) { | |
| 6414 retval = EFAULT; | |
| 6415 } | |
| 6416 break; | |
| 6417 } | |
| 6418 #else /* _MULTI_DATAMODEL */ | |
| 6419 if (ddi_copyin(pioc->ret_buf, *upibuf, | |
| 6420 sizeof (sv_path_info_t) * num_paths, mode)) { | |
| 6421 retval = EFAULT; | |
| 6422 } | |
| 6423 #endif /* _MULTI_DATAMODEL */ | |
| 6424 | |
| 6425 if (retval != 0) { | |
| 6426 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_alloc_path_info: " | |
| 6427 "ioctl <%s> normal: path_info copyin failed", s)); | |
| 6428 kmem_free(*upibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6429 kmem_free(*kpibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6430 *upibuf = NULL; | |
| 6431 *kpibuf = NULL; | |
| 6432 return (retval); | |
| 6433 } | |
| 6434 | |
| 6435 /* | |
| 6436 * Allocate memory for per path properties. | |
| 6437 */ | |
| 6438 for (index = 0, pi = *kpibuf; index < num_paths; index++, pi++) { | |
| 6439 bufsize = (*upibuf)[index].ret_prop.buf_size; | |
| 6440 | |
| 6441 if (bufsize && bufsize <= SV_PROP_MAX_BUF_SIZE) { | |
| 6442 pi->ret_prop.buf_size = bufsize; | |
| 6443 pi->ret_prop.buf = (caddr_t) | |
| 6444 kmem_zalloc(bufsize, KM_SLEEP); | |
| 6445 ASSERT(pi->ret_prop.buf != NULL); | |
| 6446 } else { | |
| 6447 pi->ret_prop.buf_size = 0; | |
| 6448 pi->ret_prop.buf = NULL; | |
| 6449 } | |
| 6450 | |
| 6451 if ((*upibuf)[index].ret_prop.ret_buf_size != NULL) { | |
| 6452 pi->ret_prop.ret_buf_size = (uint_t *)kmem_zalloc( | |
| 6453 sizeof (*pi->ret_prop.ret_buf_size), KM_SLEEP); | |
| 6454 ASSERT(pi->ret_prop.ret_buf_size != NULL); | |
| 6455 } else { | |
| 6456 pi->ret_prop.ret_buf_size = NULL; | |
| 6457 } | |
| 6458 } | |
| 6459 | |
| 6460 return (0); | |
| 6461 } | |
| 6462 | |
| 6463 | |
| 6464 /* | |
| 6465 * Routine to free memory for the path information structures. | |
| 6466 * This is the memory which was allocated earlier. | |
| 6467 */ | |
| 6468 /* ARGSUSED */ | |
| 6469 static void | |
| 6470 vhci_ioc_free_pathinfo(sv_path_info_t *upibuf, sv_path_info_t *kpibuf, | |
| 6471 uint_t num_paths) | |
| 6472 { | |
| 6473 sv_path_info_t *pi; | |
| 6474 int index; | |
| 6475 | |
| 6476 /* Free memory for per path properties */ | |
| 6477 for (index = 0, pi = kpibuf; index < num_paths; index++, pi++) { | |
| 6478 if (pi->ret_prop.ret_buf_size != NULL) { | |
| 6479 kmem_free(pi->ret_prop.ret_buf_size, | |
| 6480 sizeof (*pi->ret_prop.ret_buf_size)); | |
| 6481 } | |
| 6482 | |
| 6483 if (pi->ret_prop.buf != NULL) { | |
| 6484 kmem_free(pi->ret_prop.buf, pi->ret_prop.buf_size); | |
| 6485 } | |
| 6486 } | |
| 6487 | |
| 6488 /* Free memory for path info structures */ | |
| 6489 kmem_free(upibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6490 kmem_free(kpibuf, sizeof (sv_path_info_t) * num_paths); | |
| 6491 } | |
| 6492 | |
| 6493 | |
| 6494 /* | |
| 6495 * Routine to copy path information and path properties to userland. | |
| 6496 */ | |
| 6497 /* ARGSUSED */ | |
| 6498 static int | |
| 6499 vhci_ioc_send_pathinfo(sv_path_info_t *upibuf, sv_path_info_t *kpibuf, | |
| 6500 uint_t num_paths, sv_iocdata_t *pioc, int mode, caddr_t s) | |
| 6501 { | |
| 6502 int retval = 0, index; | |
| 6503 sv_path_info_t *upi_ptr; | |
| 6504 sv_path_info32_t *upi32_ptr; | |
| 6505 | |
| 6506 #ifdef _MULTI_DATAMODEL | |
| 6507 switch (ddi_model_convert_from(mode & FMODELS)) { | |
| 6508 case DDI_MODEL_ILP32: | |
| 6509 goto copy_32bit; | |
| 6510 | |
| 6511 case DDI_MODEL_NONE: | |
| 6512 goto copy_normal; | |
| 6513 } | |
| 6514 #else /* _MULTI_DATAMODEL */ | |
| 6515 | |
| 6516 goto copy_normal; | |
| 6517 | |
| 6518 #endif /* _MULTI_DATAMODEL */ | |
| 6519 | |
| 6520 copy_normal: | |
| 6521 | |
| 6522 /* | |
| 6523 * Copy path information and path properties to user land. | |
| 6524 * Pointer fields inside the path property structure were | |
| 6525 * saved in the 'upibuf' structure earlier. | |
| 6526 */ | |
| 6527 upi_ptr = pioc->ret_buf; | |
| 6528 for (index = 0; index < num_paths; index++) { | |
| 6529 if (ddi_copyout(kpibuf[index].device.ret_ct, | |
| 6530 upi_ptr[index].device.ret_ct, MAXPATHLEN, mode)) { | |
| 6531 retval = EFAULT; | |
| 6532 break; | |
| 6533 } | |
| 6534 | |
| 6535 if (ddi_copyout(kpibuf[index].ret_addr, | |
| 6536 upi_ptr[index].ret_addr, MAXNAMELEN, mode)) { | |
| 6537 retval = EFAULT; | |
| 6538 break; | |
| 6539 } | |
| 6540 | |
| 6541 if (ddi_copyout(&kpibuf[index].ret_state, | |
| 6542 &upi_ptr[index].ret_state, sizeof (kpibuf[index].ret_state), | |
| 6543 mode)) { | |
| 6544 retval = EFAULT; | |
| 6545 break; | |
| 6546 } | |
| 6547 | |
| 6548 if (ddi_copyout(&kpibuf[index].ret_ext_state, | |
| 6549 &upi_ptr[index].ret_ext_state, | |
| 6550 sizeof (kpibuf[index].ret_ext_state), mode)) { | |
| 6551 retval = EFAULT; | |
| 6552 break; | |
| 6553 } | |
| 6554 | |
| 6555 if ((kpibuf[index].ret_prop.ret_buf_size != NULL) && | |
| 6556 ddi_copyout(kpibuf[index].ret_prop.ret_buf_size, | |
| 6557 upibuf[index].ret_prop.ret_buf_size, | |
| 6558 sizeof (*upibuf[index].ret_prop.ret_buf_size), mode)) { | |
| 6559 retval = EFAULT; | |
| 6560 break; | |
| 6561 } | |
| 6562 | |
| 6563 if ((kpibuf[index].ret_prop.buf != NULL) && | |
| 6564 ddi_copyout(kpibuf[index].ret_prop.buf, | |
| 6565 upibuf[index].ret_prop.buf, | |
| 6566 upibuf[index].ret_prop.buf_size, mode)) { | |
| 6567 retval = EFAULT; | |
| 6568 break; | |
| 6569 } | |
| 6570 } | |
| 6571 | |
| 6572 #ifdef DEBUG | |
| 6573 if (retval) { | |
| 6574 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: ioctl <%s> " | |
| 6575 "normal: path_info copyout failed", s)); | |
| 6576 } | |
| 6577 #endif | |
| 6578 | |
| 6579 return (retval); | |
| 6580 | |
| 6581 copy_32bit: | |
| 6582 /* | |
| 6583 * Copy path information and path properties to user land. | |
| 6584 * Pointer fields inside the path property structure were | |
| 6585 * saved in the 'upibuf' structure earlier. | |
| 6586 */ | |
| 6587 upi32_ptr = (sv_path_info32_t *)pioc->ret_buf; | |
| 6588 for (index = 0; index < num_paths; index++) { | |
| 6589 if (ddi_copyout(kpibuf[index].device.ret_ct, | |
| 6590 upi32_ptr[index].device.ret_ct, MAXPATHLEN, mode)) { | |
| 6591 retval = EFAULT; | |
| 6592 break; | |
| 6593 } | |
| 6594 | |
| 6595 if (ddi_copyout(kpibuf[index].ret_addr, | |
| 6596 upi32_ptr[index].ret_addr, MAXNAMELEN, mode)) { | |
| 6597 retval = EFAULT; | |
| 6598 break; | |
| 6599 } | |
| 6600 | |
| 6601 if (ddi_copyout(&kpibuf[index].ret_state, | |
| 6602 &upi32_ptr[index].ret_state, | |
| 6603 sizeof (kpibuf[index].ret_state), mode)) { | |
| 6604 retval = EFAULT; | |
| 6605 break; | |
| 6606 } | |
| 6607 | |
| 6608 if (ddi_copyout(&kpibuf[index].ret_ext_state, | |
| 6609 &upi32_ptr[index].ret_ext_state, | |
| 6610 sizeof (kpibuf[index].ret_ext_state), mode)) { | |
| 6611 retval = EFAULT; | |
| 6612 break; | |
| 6613 } | |
| 6614 if ((kpibuf[index].ret_prop.ret_buf_size != NULL) && | |
| 6615 ddi_copyout(kpibuf[index].ret_prop.ret_buf_size, | |
| 6616 upibuf[index].ret_prop.ret_buf_size, | |
| 6617 sizeof (*upibuf[index].ret_prop.ret_buf_size), mode)) { | |
| 6618 retval = EFAULT; | |
| 6619 break; | |
| 6620 } | |
| 6621 | |
| 6622 if ((kpibuf[index].ret_prop.buf != NULL) && | |
| 6623 ddi_copyout(kpibuf[index].ret_prop.buf, | |
| 6624 upibuf[index].ret_prop.buf, | |
| 6625 upibuf[index].ret_prop.buf_size, mode)) { | |
| 6626 retval = EFAULT; | |
| 6627 break; | |
| 6628 } | |
| 6629 } | |
| 6630 | |
| 6631 #ifdef DEBUG | |
| 6632 if (retval) { | |
| 6633 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: ioctl <%s> " | |
| 6634 "normal: path_info copyout failed", s)); | |
| 6635 } | |
| 6636 #endif | |
| 6637 | |
| 6638 return (retval); | |
| 6639 } | |
| 6640 | |
| 6641 | |
| 6642 /* | |
| 6643 * vhci_failover() | |
| 6644 * This routine expects VHCI_HOLD_LUN before being invoked. It can be invoked | |
| 6645 * as MDI_FAILOVER_ASYNC or MDI_FAILOVER_SYNC. For Asynchronous failovers | |
| 6646 * this routine shall VHCI_RELEASE_LUN on exiting. For synchronous failovers | |
| 6647 * it is the callers responsibility to release lun. | |
| 6648 */ | |
| 6649 | |
| 6650 /* ARGSUSED */ | |
| 6651 static int | |
| 6652 vhci_failover(dev_info_t *vdip, dev_info_t *cdip, int flags) | |
| 6653 { | |
| 6654 char *guid; | |
| 6655 scsi_vhci_lun_t *vlun = NULL; | |
| 6656 struct scsi_vhci *vhci; | |
| 6657 mdi_pathinfo_t *pip, *npip; | |
| 6658 char *s_pclass, *pclass1, *pclass2, *pclass; | |
| 6659 char active_pclass_copy[255], *active_pclass_ptr; | |
| 6660 char *ptr1, *ptr2; | |
| 6661 mdi_pathinfo_state_t pi_state; | |
| 6662 uint32_t pi_ext_state; | |
| 6663 scsi_vhci_priv_t *svp; | |
| 6664 struct scsi_device *sd; | |
| 6665 struct scsi_failover_ops *sfo; | |
| 6666 int sps; /* mdi_select_path() status */ | |
| 6667 int activation_done = 0; | |
| 6668 int rval, retval = MDI_FAILURE; | |
| 6669 int reserve_pending, check_condition, UA_condition; | |
| 6670 struct scsi_pkt *pkt; | |
| 6671 struct buf *bp; | |
| 6672 | |
| 6673 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
| 6674 sd = ddi_get_driver_private(cdip); | |
| 6675 vlun = ADDR2VLUN(&sd->sd_address); | |
| 6676 ASSERT(vlun != 0); | |
| 6677 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
| 6678 guid = vlun->svl_lun_wwn; | |
| 6679 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(1): guid %s\n", guid)); | |
| 6680 vhci_log(CE_NOTE, vdip, "!Initiating failover for device %s " | |
| 6681 "(GUID %s)", ddi_node_name(cdip), guid); | |
| 6682 | |
| 6683 /* | |
| 6684 * Lets maintain a local copy of the vlun->svl_active_pclass | |
| 6685 * for the rest of the processing. Accessing the field | |
| 6686 * directly in the loop below causes loop logic to break | |
| 6687 * especially when the field gets updated by other threads | |
| 6688 * update path status etc and causes 'paths are not currently | |
| 6689 * available' condition to be declared prematurely. | |
| 6690 */ | |
| 6691 mutex_enter(&vlun->svl_mutex); | |
| 6692 if (vlun->svl_active_pclass != NULL) { | |
| 6693 (void) strlcpy(active_pclass_copy, vlun->svl_active_pclass, | |
| 6694 sizeof (active_pclass_copy)); | |
| 6695 active_pclass_ptr = &active_pclass_copy[0]; | |
| 6696 mutex_exit(&vlun->svl_mutex); | |
| 6697 if (vhci_quiesce_paths(vdip, cdip, vlun, guid, | |
| 6698 active_pclass_ptr) != 0) { | |
| 6699 retval = MDI_FAILURE; | |
| 6700 } | |
| 6701 } else { | |
| 6702 /* | |
| 6703 * can happen only when the available path to device | |
| 6704 * discovered is a STANDBY path. | |
| 6705 */ | |
| 6706 mutex_exit(&vlun->svl_mutex); | |
| 6707 active_pclass_copy[0] = '\0'; | |
| 6708 active_pclass_ptr = NULL; | |
| 6709 } | |
| 6710 | |
| 6711 sfo = vlun->svl_fops; | |
| 6712 ASSERT(sfo != NULL); | |
| 6713 pclass1 = s_pclass = active_pclass_ptr; | |
| 6714 VHCI_DEBUG(1, (CE_NOTE, NULL, "!(%s)failing over from %s\n", guid, | |
| 6715 (s_pclass == NULL ? "<none>" : s_pclass))); | |
| 6716 | |
| 6717 next_pathclass: | |
| 6718 | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6719 rval = sfo->sfo_pathclass_next(pclass1, &pclass2, |
| 4851 | 6720 vlun->svl_fops_ctpriv); |
| 6721 if (rval == ENOENT) { | |
| 6722 if (s_pclass == NULL) { | |
| 6723 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(4)(%s): " | |
| 6724 "failed, no more pathclasses\n", guid)); | |
| 6725 goto done; | |
| 6726 } else { | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6727 (void) sfo->sfo_pathclass_next(NULL, &pclass2, |
| 4851 | 6728 vlun->svl_fops_ctpriv); |
| 6729 } | |
| 6730 } else if (rval == EINVAL) { | |
| 6731 vhci_log(CE_NOTE, vdip, "!Failover operation failed for " | |
| 6732 "device %s (GUID %s): Invalid path-class %s", | |
| 6733 ddi_node_name(cdip), guid, | |
| 6734 ((pclass1 == NULL) ? "<none>" : pclass1)); | |
| 6735 goto done; | |
| 6736 } | |
| 6737 if ((s_pclass != NULL) && (strcmp(pclass2, s_pclass) == 0)) { | |
| 6738 /* | |
| 6739 * paths are not currently available | |
| 6740 */ | |
| 6741 vhci_log(CE_NOTE, vdip, "!Failover path currently unavailable" | |
| 6742 " for device %s (GUID %s)", | |
| 6743 ddi_node_name(cdip), guid); | |
| 6744 goto done; | |
| 6745 } | |
| 6746 pip = npip = NULL; | |
| 6747 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(5.2)(%s): considering " | |
| 6748 "%s as failover destination\n", guid, pclass2)); | |
| 6749 sps = mdi_select_path(cdip, NULL, MDI_SELECT_STANDBY_PATH, NULL, &npip); | |
| 6750 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
| 6751 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(%s): no " | |
| 6752 "STANDBY paths found (status:%x)!\n", guid, sps)); | |
| 6753 pclass1 = pclass2; | |
| 6754 goto next_pathclass; | |
| 6755 } | |
| 6756 do { | |
| 6757 pclass = NULL; | |
| 6758 if ((mdi_prop_lookup_string(npip, "path-class", | |
| 6759 &pclass) != MDI_SUCCESS) || (strcmp(pclass2, | |
| 6760 pclass) != 0)) { | |
| 6761 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6762 "!vhci_failover(5.5)(%s): skipping path " | |
| 6763 "%p(%s)...\n", guid, (void *)npip, pclass)); | |
| 6764 pip = npip; | |
| 6765 sps = mdi_select_path(cdip, NULL, | |
| 6766 MDI_SELECT_STANDBY_PATH, pip, &npip); | |
| 6767 mdi_rele_path(pip); | |
| 6768 (void) mdi_prop_free(pclass); | |
| 6769 continue; | |
| 6770 } | |
| 6771 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(npip); | |
| 6772 | |
| 6773 /* | |
| 6774 * Issue READ at non-zer block on this STANDBY path. | |
| 6775 * Purple returns | |
| 6776 * 1. RESERVATION_CONFLICT if reservation is pending | |
| 6777 * 2. POR check condition if it reset happened. | |
| 6778 * 2. failover Check Conditions if one is already in progress. | |
| 6779 */ | |
| 6780 reserve_pending = 0; | |
| 6781 check_condition = 0; | |
| 6782 UA_condition = 0; | |
| 6783 | |
| 6784 bp = scsi_alloc_consistent_buf(&svp->svp_psd->sd_address, | |
| 6785 (struct buf *)NULL, DEV_BSIZE, B_READ, NULL, NULL); | |
| 6786 if (!bp) { | |
| 6787 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6788 "vhci_failover !No resources (buf)\n")); | |
| 6789 mdi_rele_path(npip); | |
| 6790 goto done; | |
| 6791 } | |
| 6792 pkt = scsi_init_pkt(&svp->svp_psd->sd_address, NULL, bp, | |
| 6793 CDB_GROUP1, sizeof (struct scsi_arq_status), 0, | |
| 6794 PKT_CONSISTENT, NULL, NULL); | |
| 6795 if (pkt) { | |
| 6796 (void) scsi_setup_cdb((union scsi_cdb *)(uintptr_t) | |
| 6797 pkt->pkt_cdbp, SCMD_READ, 1, 1, 0); | |
| 6798 pkt->pkt_flags = FLAG_NOINTR; | |
| 6799 check_path_again: | |
|
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
6800 pkt->pkt_path_instance = mdi_pi_get_path_instance(npip); |
| 4851 | 6801 pkt->pkt_time = 3*30; |
|
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
6802 |
| 4851 | 6803 if (scsi_transport(pkt) == TRAN_ACCEPT) { |
| 6804 switch (pkt->pkt_reason) { | |
| 6805 case CMD_CMPLT: | |
| 6806 switch (SCBP_C(pkt)) { | |
| 6807 case STATUS_GOOD: | |
| 6808 /* Already failed over */ | |
| 6809 activation_done = 1; | |
| 6810 break; | |
| 6811 case STATUS_RESERVATION_CONFLICT: | |
| 6812 reserve_pending = 1; | |
| 6813 break; | |
| 6814 case STATUS_CHECK: | |
| 6815 check_condition = 1; | |
| 6816 break; | |
| 6817 } | |
| 6818 } | |
| 6819 } | |
| 6820 if (check_condition && | |
| 6821 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 6822 struct scsi_extended_sense *sns = | |
| 6823 &(((struct scsi_arq_status *)(uintptr_t) | |
| 6824 (pkt->pkt_scbp))->sts_sensedata); | |
| 6825 if (sns->es_key == KEY_UNIT_ATTENTION && | |
| 6826 sns->es_add_code == 0x29) { | |
| 6827 /* Already failed over */ | |
| 6828 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6829 "!vhci_failover(7)(%s): " | |
| 6830 "path 0x%p POR UA condition\n", | |
| 6831 guid, (void *)npip)); | |
| 6832 if (UA_condition == 0) { | |
| 6833 UA_condition = 1; | |
| 6834 goto check_path_again; | |
| 6835 } | |
| 6836 } else { | |
| 6837 activation_done = 0; | |
| 6838 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6839 "!vhci_failover(%s): path 0x%p " | |
| 6840 "unhandled chkcond %x %x %x\n", | |
| 6841 guid, (void *)npip, sns->es_key, | |
| 6842 sns->es_add_code, | |
| 6843 sns->es_qual_code)); | |
| 6844 } | |
| 6845 } | |
| 6846 scsi_destroy_pkt(pkt); | |
| 6847 } | |
| 6848 scsi_free_consistent_buf(bp); | |
| 6849 | |
| 6850 if (activation_done) { | |
| 6851 mdi_rele_path(npip); | |
| 6852 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(7)(%s): " | |
| 6853 "path 0x%p already failedover\n", guid, | |
| 6854 (void *)npip)); | |
| 6855 break; | |
| 6856 } | |
| 6857 if (reserve_pending && (vlun->svl_xlf_capable == 0)) { | |
| 6858 (void) vhci_recovery_reset(vlun, | |
| 6859 &svp->svp_psd->sd_address, | |
| 6860 FALSE, VHCI_DEPTH_ALL); | |
| 6861 } | |
| 6862 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(6)(%s): " | |
| 6863 "activating path 0x%p(psd:%p)\n", guid, (void *)npip, | |
| 6864 (void *)svp->svp_psd)); | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6865 if (sfo->sfo_path_activate(svp->svp_psd, pclass2, |
| 4851 | 6866 vlun->svl_fops_ctpriv) == 0) { |
| 6867 activation_done = 1; | |
| 6868 mdi_rele_path(npip); | |
| 6869 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(7)(%s): " | |
| 6870 "path 0x%p successfully activated\n", guid, | |
| 6871 (void *)npip)); | |
| 6872 break; | |
| 6873 } | |
| 6874 pip = npip; | |
| 6875 sps = mdi_select_path(cdip, NULL, MDI_SELECT_STANDBY_PATH, | |
| 6876 pip, &npip); | |
| 6877 mdi_rele_path(pip); | |
| 6878 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 6879 if (activation_done == 0) { | |
| 6880 pclass1 = pclass2; | |
| 6881 goto next_pathclass; | |
| 6882 } | |
| 6883 | |
| 6884 /* | |
| 6885 * if we are here, we have succeeded in activating path npip of | |
| 6886 * pathclass pclass2; let us validate all paths of pclass2 by | |
| 6887 * "ping"-ing each one and mark the good ones ONLINE | |
| 6888 * Also, set the state of the paths belonging to the previously | |
| 6889 * active pathclass to STANDBY | |
| 6890 */ | |
| 6891 pip = npip = NULL; | |
| 6892 sps = mdi_select_path(cdip, NULL, (MDI_SELECT_ONLINE_PATH | | |
| 6893 MDI_SELECT_STANDBY_PATH | MDI_SELECT_USER_DISABLE_PATH), | |
| 6894 NULL, &npip); | |
| 6895 if (npip == NULL || sps != MDI_SUCCESS) { | |
| 6896 VHCI_DEBUG(1, (CE_NOTE, NULL, "!Failover operation failed for " | |
| 6897 "device %s (GUID %s): paths may be busy\n", | |
| 6898 ddi_node_name(cdip), guid)); | |
| 6899 goto done; | |
| 6900 } | |
| 6901 do { | |
| 6902 (void) mdi_pi_get_state2(npip, &pi_state, &pi_ext_state); | |
| 6903 if (mdi_prop_lookup_string(npip, "path-class", &pclass) | |
| 6904 != MDI_SUCCESS) { | |
| 6905 pip = npip; | |
| 6906 sps = mdi_select_path(cdip, NULL, | |
| 6907 (MDI_SELECT_ONLINE_PATH | | |
| 6908 MDI_SELECT_STANDBY_PATH | | |
| 6909 MDI_SELECT_USER_DISABLE_PATH), | |
| 6910 pip, &npip); | |
| 6911 mdi_rele_path(pip); | |
| 6912 continue; | |
| 6913 } | |
| 6914 if (strcmp(pclass, pclass2) == 0) { | |
| 6915 if (pi_state == MDI_PATHINFO_STATE_STANDBY) { | |
| 6916 svp = (scsi_vhci_priv_t *) | |
| 6917 mdi_pi_get_vhci_private(npip); | |
| 6918 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6919 "!vhci_failover(8)(%s): " | |
| 6920 "pinging path 0x%p\n", | |
| 6921 guid, (void *)npip)); | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6922 if (sfo->sfo_path_ping(svp->svp_psd, |
| 4851 | 6923 vlun->svl_fops_ctpriv) == 1) { |
| 6924 mdi_pi_set_state(npip, | |
| 6925 MDI_PATHINFO_STATE_ONLINE); | |
| 6926 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6927 "!vhci_failover(9)(%s): " | |
| 6928 "path 0x%p ping successful, " | |
| 6929 "marked online\n", guid, | |
| 6930 (void *)npip)); | |
| 6931 MDI_PI_ERRSTAT(npip, MDI_PI_FAILTO); | |
| 6932 } | |
| 6933 } | |
| 6934 } else if ((s_pclass != NULL) && (strcmp(pclass, s_pclass) | |
| 6935 == 0)) { | |
| 6936 if (pi_state == MDI_PATHINFO_STATE_ONLINE) { | |
| 6937 mdi_pi_set_state(npip, | |
| 6938 MDI_PATHINFO_STATE_STANDBY); | |
| 6939 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 6940 "!vhci_failover(10)(%s): path 0x%p marked " | |
| 6941 "STANDBY\n", guid, (void *)npip)); | |
| 6942 MDI_PI_ERRSTAT(npip, MDI_PI_FAILFROM); | |
| 6943 } | |
| 6944 } | |
| 6945 (void) mdi_prop_free(pclass); | |
| 6946 pip = npip; | |
| 6947 sps = mdi_select_path(cdip, NULL, (MDI_SELECT_ONLINE_PATH | | |
| 6948 MDI_SELECT_STANDBY_PATH|MDI_SELECT_USER_DISABLE_PATH), | |
| 6949 pip, &npip); | |
| 6950 mdi_rele_path(pip); | |
| 6951 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 6952 | |
| 6953 /* | |
| 6954 * Update the AccessState of related MP-API TPGs | |
| 6955 */ | |
| 6956 (void) vhci_mpapi_update_tpg_acc_state_for_lu(vhci, vlun); | |
| 6957 | |
| 6958 vhci_log(CE_NOTE, vdip, "!Failover operation completed successfully " | |
| 6959 "for device %s (GUID %s): failed over from %s to %s", | |
| 6960 ddi_node_name(cdip), guid, ((s_pclass == NULL) ? "<none>" : | |
| 6961 s_pclass), pclass2); | |
| 6962 ptr1 = kmem_alloc(strlen(pclass2)+1, KM_SLEEP); | |
| 6963 (void) strlcpy(ptr1, pclass2, (strlen(pclass2)+1)); | |
| 6964 mutex_enter(&vlun->svl_mutex); | |
| 6965 ptr2 = vlun->svl_active_pclass; | |
| 6966 vlun->svl_active_pclass = ptr1; | |
| 6967 mutex_exit(&vlun->svl_mutex); | |
| 6968 if (ptr2) { | |
| 6969 kmem_free(ptr2, strlen(ptr2)+1); | |
| 6970 } | |
| 6971 mutex_enter(&vhci->vhci_mutex); | |
| 6972 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
| 6973 &vhci->vhci_reset_notify_listf); | |
| 6974 /* All reservations are cleared upon these resets. */ | |
| 6975 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
| 6976 mutex_exit(&vhci->vhci_mutex); | |
| 6977 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(11): DONE! Active " | |
| 6978 "pathclass for %s is now %s\n", guid, pclass2)); | |
| 6979 retval = MDI_SUCCESS; | |
| 6980 | |
| 6981 done: | |
| 6982 if (flags == MDI_FAILOVER_ASYNC) { | |
| 6983 VHCI_RELEASE_LUN(vlun); | |
| 6984 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_failover(12): DONE! " | |
| 6985 "releasing lun, as failover was ASYNC\n")); | |
| 6986 } else { | |
| 6987 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_failover(12): DONE! " | |
| 6988 "NOT releasing lun, as failover was SYNC\n")); | |
| 6989 } | |
| 6990 return (retval); | |
| 6991 } | |
| 6992 | |
| 6993 /* | |
| 6994 * vhci_client_attached is called after the successful attach of a | |
| 6995 * client devinfo node. | |
| 6996 */ | |
| 6997 static void | |
| 6998 vhci_client_attached(dev_info_t *cdip) | |
| 6999 { | |
| 7000 mdi_pathinfo_t *pip; | |
| 7001 int circular; | |
| 7002 | |
| 7003 /* | |
| 7004 * At this point the client has attached and it's instance number is | |
| 7005 * valid, so we can set up kstats. We need to do this here because it | |
| 7006 * is possible for paths to go online prior to client attach, in which | |
| 7007 * case the call to vhci_kstat_create_pathinfo in vhci_pathinfo_online | |
| 7008 * was a noop. | |
| 7009 */ | |
| 7010 ndi_devi_enter(cdip, &circular); | |
| 7011 for (pip = mdi_get_next_phci_path(cdip, NULL); pip; | |
| 7012 pip = mdi_get_next_phci_path(cdip, pip)) | |
| 7013 vhci_kstat_create_pathinfo(pip); | |
| 7014 ndi_devi_exit(cdip, circular); | |
| 7015 } | |
| 7016 | |
| 7017 /* | |
| 7018 * quiesce all of the online paths | |
| 7019 */ | |
| 7020 static int | |
| 7021 vhci_quiesce_paths(dev_info_t *vdip, dev_info_t *cdip, scsi_vhci_lun_t *vlun, | |
| 7022 char *guid, char *active_pclass_ptr) | |
| 7023 { | |
| 7024 scsi_vhci_priv_t *svp; | |
| 7025 char *s_pclass = NULL; | |
| 7026 mdi_pathinfo_t *npip, *pip; | |
| 7027 int sps; | |
| 7028 | |
| 7029 /* quiesce currently active paths */ | |
| 7030 s_pclass = NULL; | |
| 7031 pip = npip = NULL; | |
| 7032 sps = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, NULL, &npip); | |
| 7033 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
| 7034 return (1); | |
| 7035 } | |
| 7036 do { | |
| 7037 if (mdi_prop_lookup_string(npip, "path-class", | |
| 7038 &s_pclass) != MDI_SUCCESS) { | |
| 7039 mdi_rele_path(npip); | |
| 7040 vhci_log(CE_NOTE, vdip, "!Failover operation failed " | |
| 7041 "for device %s (GUID %s) due to an internal " | |
| 7042 "error", ddi_node_name(cdip), guid); | |
| 7043 return (1); | |
| 7044 } | |
| 7045 if (strcmp(s_pclass, active_pclass_ptr) == 0) { | |
| 7046 /* | |
| 7047 * quiesce path. Free s_pclass since | |
| 7048 * we don't need it anymore | |
| 7049 */ | |
| 7050 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7051 "!vhci_failover(2)(%s): failing over " | |
| 7052 "from %s; quiescing path %p\n", | |
| 7053 guid, s_pclass, (void *)npip)); | |
| 7054 (void) mdi_prop_free(s_pclass); | |
| 7055 svp = (scsi_vhci_priv_t *) | |
| 7056 mdi_pi_get_vhci_private(npip); | |
| 7057 if (svp == NULL) { | |
| 7058 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7059 "!vhci_failover(2.5)(%s): no " | |
| 7060 "client priv! %p offlined?\n", | |
| 7061 guid, (void *)npip)); | |
| 7062 pip = npip; | |
| 7063 sps = mdi_select_path(cdip, NULL, | |
| 7064 MDI_SELECT_ONLINE_PATH, pip, &npip); | |
| 7065 mdi_rele_path(pip); | |
| 7066 continue; | |
| 7067 } | |
| 7068 if (scsi_abort(&svp->svp_psd->sd_address, NULL) | |
| 7069 == 0) { | |
| 7070 (void) vhci_recovery_reset(vlun, | |
| 7071 &svp->svp_psd->sd_address, FALSE, | |
| 7072 VHCI_DEPTH_TARGET); | |
| 7073 } | |
| 7074 mutex_enter(&svp->svp_mutex); | |
| 7075 if (svp->svp_cmds == 0) { | |
| 7076 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7077 "!vhci_failover(3)(%s):" | |
| 7078 "quiesced path %p\n", guid, (void *)npip)); | |
| 7079 } else { | |
| 7080 while (svp->svp_cmds != 0) { | |
| 7081 cv_wait(&svp->svp_cv, &svp->svp_mutex); | |
| 7082 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7083 "!vhci_failover(3.cv)(%s):" | |
| 7084 "quiesced path %p\n", guid, | |
| 7085 (void *)npip)); | |
| 7086 } | |
| 7087 } | |
| 7088 mutex_exit(&svp->svp_mutex); | |
| 7089 } else { | |
| 7090 /* | |
| 7091 * make sure we freeup the memory | |
| 7092 */ | |
| 7093 (void) mdi_prop_free(s_pclass); | |
| 7094 } | |
| 7095 pip = npip; | |
| 7096 sps = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, | |
| 7097 pip, &npip); | |
| 7098 mdi_rele_path(pip); | |
| 7099 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
| 7100 return (0); | |
| 7101 } | |
| 7102 | |
| 7103 static struct scsi_vhci_lun * | |
| 7104 vhci_lun_lookup(dev_info_t *tgt_dip) | |
| 7105 { | |
| 7106 return ((struct scsi_vhci_lun *) | |
| 7107 mdi_client_get_vhci_private(tgt_dip)); | |
| 7108 } | |
| 7109 | |
| 7110 static struct scsi_vhci_lun * | |
| 7111 vhci_lun_lookup_alloc(dev_info_t *tgt_dip, char *guid, int *didalloc) | |
| 7112 { | |
| 7113 struct scsi_vhci_lun *svl; | |
| 7114 | |
| 7115 if (svl = vhci_lun_lookup(tgt_dip)) { | |
| 7116 return (svl); | |
| 7117 } | |
| 7118 | |
| 7119 svl = kmem_zalloc(sizeof (*svl), KM_SLEEP); | |
| 7120 svl->svl_lun_wwn = kmem_zalloc(strlen(guid)+1, KM_SLEEP); | |
| 7121 (void) strcpy(svl->svl_lun_wwn, guid); | |
| 7122 mutex_init(&svl->svl_mutex, NULL, MUTEX_DRIVER, NULL); | |
| 7123 cv_init(&svl->svl_cv, NULL, CV_DRIVER, NULL); | |
| 7124 sema_init(&svl->svl_pgr_sema, 1, NULL, SEMA_DRIVER, NULL); | |
| 7125 svl->svl_waiting_for_activepath = 1; | |
| 7126 svl->svl_sector_size = 1; | |
| 7127 mdi_client_set_vhci_private(tgt_dip, svl); | |
| 7128 *didalloc = 1; | |
| 7129 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7130 "vhci_lun_lookup_alloc: guid %s vlun 0x%p\n", | |
| 7131 guid, (void *)svl)); | |
| 7132 return (svl); | |
| 7133 } | |
| 7134 | |
| 7135 static void | |
| 7136 vhci_lun_free(dev_info_t *tgt_dip) | |
| 7137 { | |
| 7138 struct scsi_vhci_lun *dvlp; | |
| 7139 char *guid; | |
|
4882
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7140 struct scsi_device *sd; |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7141 |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7142 /* |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7143 * 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
jw149990
parents:
4851
diff
changeset
|
7144 * initialization in the scsi_hba_bus_ctl(). |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7145 */ |
|
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7146 sd = (struct scsi_device *)ddi_get_driver_private(tgt_dip); |
| 4851 | 7147 |
| 7148 dvlp = (struct scsi_vhci_lun *) | |
| 7149 mdi_client_get_vhci_private(tgt_dip); | |
| 7150 ASSERT(dvlp != NULL); | |
| 7151 | |
| 7152 mdi_client_set_vhci_private(tgt_dip, NULL); | |
| 7153 | |
| 7154 guid = dvlp->svl_lun_wwn; | |
| 7155 ASSERT(guid != NULL); | |
| 7156 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_lun_free: %s\n", guid)); | |
| 7157 | |
| 7158 mutex_enter(&dvlp->svl_mutex); | |
| 7159 if (dvlp->svl_active_pclass != NULL) { | |
| 7160 kmem_free(dvlp->svl_active_pclass, | |
| 7161 strlen(dvlp->svl_active_pclass)+1); | |
| 7162 } | |
| 7163 dvlp->svl_active_pclass = NULL; | |
| 7164 mutex_exit(&dvlp->svl_mutex); | |
| 7165 | |
| 7166 if (dvlp->svl_lun_wwn != NULL) { | |
| 7167 kmem_free(dvlp->svl_lun_wwn, strlen(dvlp->svl_lun_wwn)+1); | |
| 7168 } | |
| 7169 dvlp->svl_lun_wwn = NULL; | |
| 7170 | |
| 7171 if (dvlp->svl_fops_name) { | |
| 7172 kmem_free(dvlp->svl_fops_name, strlen(dvlp->svl_fops_name)+1); | |
| 7173 } | |
| 7174 dvlp->svl_fops_name = NULL; | |
| 7175 | |
|
6023
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7176 if (dvlp->svl_fops_ctpriv != NULL) { |
|
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7177 dvlp->svl_fops->sfo_device_unprobe(sd, dvlp->svl_fops_ctpriv); |
|
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7178 } |
|
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7179 |
| 4851 | 7180 if (dvlp->svl_flags & VLUN_TASK_D_ALIVE_FLG) |
| 7181 taskq_destroy(dvlp->svl_taskq); | |
| 7182 | |
| 7183 mutex_destroy(&dvlp->svl_mutex); | |
| 7184 cv_destroy(&dvlp->svl_cv); | |
| 7185 sema_destroy(&dvlp->svl_pgr_sema); | |
| 7186 kmem_free(dvlp, sizeof (*dvlp)); | |
|
4896
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6594084 fixing of 6591973 could cause system panic.
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|
7187 /* |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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diff
changeset
|
7188 * 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
|
7189 * initialization so check if the sd is NULL. |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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4882
diff
changeset
|
7190 */ |
|
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
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diff
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|
7191 if (sd != NULL) |
|
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|
7192 sd->sd_address.a_hba_tran->tran_tgt_private = NULL; |
| 4851 | 7193 } |
| 7194 | |
| 7195 | |
| 7196 int | |
| 7197 vhci_do_scsi_cmd(struct scsi_pkt *pkt) | |
| 7198 { | |
| 7199 int err = 0; | |
| 7200 int retry_cnt = 0; | |
| 7201 struct scsi_extended_sense *sns; | |
| 7202 | |
|
6941
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
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|
7203 #ifdef DEBUG |
|
6962
225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
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6941
diff
changeset
|
7204 if (vhci_debug > 5) { |
|
225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
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6941
diff
changeset
|
7205 vhci_print_cdb(pkt->pkt_address.a_hba_tran->tran_hba_dip, |
|
225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
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6941
diff
changeset
|
7206 CE_WARN, "Vhci command", pkt->pkt_cdbp); |
|
225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
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diff
changeset
|
7207 } |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
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|
7208 #endif |
|
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diff
changeset
|
7209 |
| 4851 | 7210 retry: |
| 7211 err = scsi_poll(pkt); | |
| 7212 if (err) { | |
| 7213 if (pkt->pkt_cdbp[0] == SCMD_RELEASE) { | |
| 7214 if (SCBP_C(pkt) == STATUS_RESERVATION_CONFLICT) { | |
| 7215 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
| 7216 "!v_s_do_s_c: RELEASE conflict\n")); | |
| 7217 return (0); | |
| 7218 } | |
| 7219 } | |
| 7220 if (retry_cnt++ < 3) { | |
| 7221 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7222 "!v_s_do_s_c:retry packet 0x%p " | |
| 7223 "status 0x%x reason %s", | |
| 7224 (void *)pkt, SCBP_C(pkt), | |
| 7225 scsi_rname(pkt->pkt_reason))); | |
| 7226 if ((pkt->pkt_reason == CMD_CMPLT) && | |
| 7227 (SCBP_C(pkt) == STATUS_CHECK) && | |
| 7228 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
| 7229 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
| 7230 (pkt->pkt_scbp))->sts_sensedata); | |
| 7231 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7232 "!v_s_do_s_c:retry " | |
| 7233 "packet 0x%p sense data %s", (void *)pkt, | |
| 7234 scsi_sname(sns->es_key))); | |
| 7235 } | |
| 7236 goto retry; | |
| 7237 } | |
| 7238 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7239 "!v_s_do_s_c: failed transport 0x%p 0x%x", | |
| 7240 (void *)pkt, SCBP_C(pkt))); | |
| 7241 return (0); | |
| 7242 } | |
| 7243 | |
| 7244 switch (pkt->pkt_reason) { | |
| 7245 case CMD_TIMEOUT: | |
| 7246 VHCI_DEBUG(1, (CE_WARN, NULL, "!pkt timed " | |
| 7247 "out (pkt 0x%p)", (void *)pkt)); | |
| 7248 return (0); | |
| 7249 case CMD_CMPLT: | |
| 7250 switch (SCBP_C(pkt)) { | |
| 7251 case STATUS_GOOD: | |
| 7252 break; | |
| 7253 case STATUS_CHECK: | |
| 7254 if (pkt->pkt_state & STATE_ARQ_DONE) { | |
| 7255 sns = &((( | |
| 7256 struct scsi_arq_status *) | |
| 7257 (uintptr_t) | |
| 7258 (pkt->pkt_scbp))-> | |
| 7259 sts_sensedata); | |
| 7260 if ((sns->es_key == | |
| 7261 KEY_UNIT_ATTENTION) || | |
| 7262 (sns->es_key == | |
| 7263 KEY_NOT_READY)) { | |
| 7264 /* | |
| 7265 * clear unit attn. | |
| 7266 */ | |
| 7267 | |
| 7268 VHCI_DEBUG(1, | |
| 7269 (CE_WARN, NULL, | |
| 7270 "!v_s_do_s_c: " | |
| 7271 "retry " | |
| 7272 "packet 0x%p sense " | |
| 7273 "data %s", | |
| 7274 (void *)pkt, | |
| 7275 scsi_sname | |
| 7276 (sns->es_key))); | |
| 7277 goto retry; | |
| 7278 } | |
| 7279 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 7280 "!ARQ while " | |
| 7281 "transporting " | |
| 7282 "(pkt 0x%p)", | |
| 7283 (void *)pkt)); | |
| 7284 return (0); | |
| 7285 } | |
| 7286 return (0); | |
| 7287 default: | |
| 7288 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7289 "!Bad status returned " | |
| 7290 "(pkt 0x%p, status %x)", | |
| 7291 (void *)pkt, SCBP_C(pkt))); | |
| 7292 return (0); | |
| 7293 } | |
| 7294 break; | |
| 7295 case CMD_INCOMPLETE: | |
| 7296 case CMD_RESET: | |
| 7297 case CMD_ABORTED: | |
| 7298 case CMD_TRAN_ERR: | |
| 7299 if (retry_cnt++ < 1) { | |
| 7300 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7301 "!v_s_do_s_c: retry packet 0x%p %s", | |
| 7302 (void *)pkt, scsi_rname(pkt->pkt_reason))); | |
| 7303 goto retry; | |
| 7304 } | |
| 7305 /* FALLTHROUGH */ | |
| 7306 default: | |
| 7307 VHCI_DEBUG(1, (CE_WARN, NULL, "!pkt did not " | |
| 7308 "complete successfully (pkt 0x%p," | |
| 7309 "reason %x)", (void *)pkt, pkt->pkt_reason)); | |
| 7310 return (0); | |
| 7311 } | |
| 7312 return (1); | |
| 7313 } | |
| 7314 | |
| 7315 static int | |
| 7316 vhci_quiesce_lun(struct scsi_vhci_lun *vlun) | |
| 7317 { | |
| 7318 mdi_pathinfo_t *pip, *spip; | |
| 7319 dev_info_t *cdip; | |
| 7320 struct scsi_vhci_priv *svp; | |
| 7321 mdi_pathinfo_state_t pstate; | |
| 7322 uint32_t p_ext_state; | |
| 7323 int circular; | |
| 7324 | |
| 7325 cdip = vlun->svl_dip; | |
| 7326 pip = spip = NULL; | |
| 7327 ndi_devi_enter(cdip, &circular); | |
| 7328 pip = mdi_get_next_phci_path(cdip, NULL); | |
| 7329 while (pip != NULL) { | |
| 7330 (void) mdi_pi_get_state2(pip, &pstate, &p_ext_state); | |
| 7331 if (pstate != MDI_PATHINFO_STATE_ONLINE) { | |
| 7332 spip = pip; | |
| 7333 pip = mdi_get_next_phci_path(cdip, spip); | |
| 7334 continue; | |
| 7335 } | |
| 7336 mdi_hold_path(pip); | |
| 7337 ndi_devi_exit(cdip, circular); | |
| 7338 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 7339 mutex_enter(&svp->svp_mutex); | |
| 7340 while (svp->svp_cmds != 0) { | |
| 7341 if (cv_timedwait(&svp->svp_cv, &svp->svp_mutex, | |
| 7342 ddi_get_lbolt() + drv_usectohz | |
| 7343 (vhci_path_quiesce_timeout * 1000000)) == -1) { | |
| 7344 mutex_exit(&svp->svp_mutex); | |
| 7345 mdi_rele_path(pip); | |
| 7346 VHCI_DEBUG(1, (CE_WARN, NULL, | |
| 7347 "Quiesce of lun is not successful " | |
| 7348 "vlun: 0x%p.", (void *)vlun)); | |
| 7349 return (0); | |
| 7350 } | |
| 7351 } | |
| 7352 mutex_exit(&svp->svp_mutex); | |
| 7353 ndi_devi_enter(cdip, &circular); | |
| 7354 spip = pip; | |
| 7355 pip = mdi_get_next_phci_path(cdip, spip); | |
| 7356 mdi_rele_path(spip); | |
| 7357 } | |
| 7358 ndi_devi_exit(cdip, circular); | |
| 7359 return (1); | |
| 7360 } | |
| 7361 | |
| 7362 static int | |
| 7363 vhci_pgr_validate_and_register(scsi_vhci_priv_t *svp) | |
| 7364 { | |
| 7365 scsi_vhci_lun_t *vlun; | |
| 7366 vhci_prout_t *prout; | |
| 7367 int rval, success; | |
| 7368 mdi_pathinfo_t *pip, *npip; | |
| 7369 scsi_vhci_priv_t *osvp; | |
| 7370 dev_info_t *cdip; | |
| 7371 uchar_t cdb_1; | |
| 7372 uchar_t temp_res_key[MHIOC_RESV_KEY_SIZE]; | |
| 7373 | |
| 7374 | |
| 7375 /* | |
| 7376 * see if there are any other paths available; if none, | |
| 7377 * then there is nothing to do. | |
| 7378 */ | |
| 7379 cdip = svp->svp_svl->svl_dip; | |
| 7380 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH | | |
| 7381 MDI_SELECT_STANDBY_PATH, NULL, &pip); | |
| 7382 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 7383 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7384 "%s%d: vhci_pgr_validate_and_register: first path\n", | |
| 7385 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 7386 return (1); | |
| 7387 } | |
| 7388 | |
| 7389 vlun = svp->svp_svl; | |
| 7390 prout = &vlun->svl_prout; | |
| 7391 ASSERT(vlun->svl_pgr_active != 0); | |
| 7392 | |
| 7393 /* | |
| 7394 * When the path was busy/offlined, some other host might have | |
| 7395 * cleared this key. Validate key on some other path first. | |
| 7396 * If it fails, return failure. | |
| 7397 */ | |
| 7398 | |
| 7399 npip = pip; | |
| 7400 pip = NULL; | |
| 7401 success = 0; | |
| 7402 | |
| 7403 /* Save the res key */ | |
|
6941
c5d83acec1bc
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rralphs
parents:
6777
diff
changeset
|
7404 bcopy(prout->res_key, temp_res_key, MHIOC_RESV_KEY_SIZE); |
| 4851 | 7405 |
| 7406 /* | |
| 7407 * Sometimes CDB from application can be a Register_And_Ignore. | |
| 7408 * Instead of validation, this cdb would result in force registration. | |
| 7409 * Convert it to normal cdb for validation. | |
| 7410 * After that be sure to restore the cdb. | |
| 7411 */ | |
| 7412 cdb_1 = vlun->svl_cdb[1]; | |
| 7413 vlun->svl_cdb[1] &= 0xe0; | |
| 7414 | |
| 7415 do { | |
|
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
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parents:
6777
diff
changeset
|
7416 osvp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(npip); |
| 4851 | 7417 if (osvp == NULL) { |
| 7418 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7419 "vhci_pgr_validate_and_register: no " | |
| 7420 "client priv! 0x%p offlined?\n", | |
| 7421 (void *)npip)); | |
| 7422 goto next_path_1; | |
| 7423 } | |
| 7424 | |
| 7425 if (osvp == svp) { | |
| 7426 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7427 "vhci_pgr_validate_and_register: same svp 0x%p" | |
| 7428 " npip 0x%p vlun 0x%p\n", | |
| 7429 (void *)svp, (void *)npip, (void *)vlun)); | |
| 7430 goto next_path_1; | |
| 7431 } | |
| 7432 | |
| 7433 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7434 "vhci_pgr_validate_and_register: First validate on" | |
| 7435 " osvp 0x%p being done. vlun 0x%p thread 0x%p Before bcopy" | |
| 7436 " cdb1 %x\n", (void *)osvp, (void *)vlun, | |
| 7437 (void *)curthread, vlun->svl_cdb[1])); | |
| 7438 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy:"); | |
| 7439 | |
|
6941
c5d83acec1bc
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6777
diff
changeset
|
7440 bcopy(prout->service_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
| 4851 | 7441 |
| 7442 VHCI_DEBUG(4, (CE_WARN, NULL, "vlun 0x%p After bcopy", | |
| 7443 (void *)vlun)); | |
| 7444 vhci_print_prout_keys(vlun, "v_pgr_val_reg: after bcopy: "); | |
| 7445 | |
| 7446 rval = vhci_do_prout(osvp); | |
| 7447 if (rval == 1) { | |
| 7448 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7449 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7450 " validated thread 0x%p\n", ddi_driver_name(cdip), | |
| 7451 ddi_get_instance(cdip), (void *)curthread)); | |
| 7452 pip = npip; | |
| 7453 success = 1; | |
| 7454 break; | |
| 7455 } else { | |
| 7456 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7457 "vhci_pgr_validate_and_register: First validation" | |
| 7458 " on osvp 0x%p failed %x\n", (void *)osvp, rval)); | |
| 7459 vhci_print_prout_keys(vlun, "v_pgr_val_reg: failed:"); | |
| 7460 } | |
| 7461 | |
| 7462 /* | |
| 7463 * Try other paths | |
| 7464 */ | |
| 7465 next_path_1: | |
| 7466 pip = npip; | |
| 7467 rval = mdi_select_path(cdip, NULL, | |
| 7468 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
| 7469 pip, &npip); | |
| 7470 mdi_rele_path(pip); | |
| 7471 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
| 7472 | |
| 7473 | |
| 7474 /* Be sure to restore original cdb */ | |
| 7475 vlun->svl_cdb[1] = cdb_1; | |
| 7476 | |
| 7477 /* Restore the res_key */ | |
|
6941
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6459247 scsi_vhci does not return correct value for dma-max property
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6777
diff
changeset
|
7478 bcopy(temp_res_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
| 4851 | 7479 |
| 7480 /* | |
| 7481 * If key could not be registered on any path for the first time, | |
| 7482 * return success as online should still continue. | |
| 7483 */ | |
| 7484 if (success == 0) { | |
| 7485 return (1); | |
| 7486 } | |
| 7487 | |
| 7488 ASSERT(pip != NULL); | |
| 7489 | |
| 7490 /* | |
| 7491 * Force register on new path | |
| 7492 */ | |
| 7493 cdb_1 = vlun->svl_cdb[1]; /* store the cdb */ | |
| 7494 | |
| 7495 vlun->svl_cdb[1] &= 0xe0; | |
| 7496 vlun->svl_cdb[1] |= VHCI_PROUT_R_AND_IGNORE; | |
| 7497 | |
| 7498 vhci_print_prout_keys(vlun, "v_pgr_val_reg: keys before bcopy: "); | |
| 7499 | |
|
6941
c5d83acec1bc
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6777
diff
changeset
|
7500 bcopy(prout->active_service_key, prout->service_key, |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
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6777
diff
changeset
|
7501 MHIOC_RESV_KEY_SIZE); |
|
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
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6777
diff
changeset
|
7502 bcopy(prout->active_res_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
| 4851 | 7503 |
| 7504 vhci_print_prout_keys(vlun, "v_pgr_val_reg:keys after bcopy: "); | |
| 7505 | |
| 7506 rval = vhci_do_prout(svp); | |
| 7507 vlun->svl_cdb[1] = cdb_1; /* restore the cdb */ | |
| 7508 if (rval != 1) { | |
| 7509 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7510 "vhci_pgr_validate_and_register: register on new" | |
| 7511 " path 0x%p svp 0x%p failed %x\n", | |
| 7512 (void *)pip, (void *)svp, rval)); | |
| 7513 vhci_print_prout_keys(vlun, "v_pgr_val_reg: reg failed: "); | |
| 7514 mdi_rele_path(pip); | |
| 7515 return (0); | |
| 7516 } | |
| 7517 | |
| 7518 if (bcmp(prout->service_key, zero_key, MHIOC_RESV_KEY_SIZE) == 0) { | |
| 7519 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7520 "vhci_pgr_validate_and_register: zero service key\n")); | |
| 7521 mdi_rele_path(pip); | |
| 7522 return (rval); | |
| 7523 } | |
| 7524 | |
| 7525 /* | |
| 7526 * While the key was force registered, some other host might have | |
| 7527 * cleared the key. Re-validate key on another pre-existing path | |
| 7528 * before declaring success. | |
| 7529 */ | |
| 7530 npip = pip; | |
| 7531 pip = NULL; | |
| 7532 | |
| 7533 /* | |
| 7534 * Sometimes CDB from application can be Register and Ignore. | |
| 7535 * Instead of validation, it would result in force registration. | |
| 7536 * Convert it to normal cdb for validation. | |
| 7537 * After that be sure to restore the cdb. | |
| 7538 */ | |
| 7539 cdb_1 = vlun->svl_cdb[1]; | |
| 7540 vlun->svl_cdb[1] &= 0xe0; | |
| 7541 success = 0; | |
| 7542 | |
| 7543 do { | |
| 7544 osvp = (scsi_vhci_priv_t *) | |
| 7545 mdi_pi_get_vhci_private(npip); | |
| 7546 if (osvp == NULL) { | |
| 7547 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7548 "vhci_pgr_validate_and_register: no " | |
| 7549 "client priv! 0x%p offlined?\n", | |
| 7550 (void *)npip)); | |
| 7551 goto next_path_2; | |
| 7552 } | |
| 7553 | |
| 7554 if (osvp == svp) { | |
| 7555 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7556 "vhci_pgr_validate_and_register: same osvp 0x%p" | |
| 7557 " npip 0x%p vlun 0x%p\n", | |
| 7558 (void *)svp, (void *)npip, (void *)vlun)); | |
| 7559 goto next_path_2; | |
| 7560 } | |
| 7561 | |
| 7562 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7563 "vhci_pgr_validate_and_register: Re-validation on" | |
| 7564 " osvp 0x%p being done. vlun 0x%p Before bcopy cdb1 %x\n", | |
| 7565 (void *)osvp, (void *)vlun, vlun->svl_cdb[1])); | |
| 7566 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
| 7567 | |
|
6941
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rralphs
parents:
6777
diff
changeset
|
7568 bcopy(prout->service_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
| 4851 | 7569 |
| 7570 vhci_print_prout_keys(vlun, "v_pgr_val_reg: after bcopy: "); | |
| 7571 | |
| 7572 rval = vhci_do_prout(osvp); | |
| 7573 if (rval == 1) { | |
| 7574 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7575 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7576 " validated thread 0x%p\n", ddi_driver_name(cdip), | |
| 7577 ddi_get_instance(cdip), (void *)curthread)); | |
| 7578 pip = npip; | |
| 7579 success = 1; | |
| 7580 break; | |
| 7581 } else { | |
| 7582 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7583 "vhci_pgr_validate_and_register: Re-validation on" | |
| 7584 " osvp 0x%p failed %x\n", (void *)osvp, rval)); | |
| 7585 vhci_print_prout_keys(vlun, | |
| 7586 "v_pgr_val_reg: reval failed: "); | |
| 7587 } | |
| 7588 | |
| 7589 /* | |
| 7590 * Try other paths | |
| 7591 */ | |
| 7592 next_path_2: | |
| 7593 pip = npip; | |
| 7594 rval = mdi_select_path(cdip, NULL, | |
| 7595 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
| 7596 pip, &npip); | |
| 7597 mdi_rele_path(pip); | |
| 7598 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
| 7599 | |
| 7600 /* Be sure to restore original cdb */ | |
| 7601 vlun->svl_cdb[1] = cdb_1; | |
| 7602 | |
| 7603 if (success == 1) { | |
| 7604 /* Successfully validated registration */ | |
| 7605 mdi_rele_path(pip); | |
| 7606 return (1); | |
| 7607 } | |
| 7608 | |
| 7609 VHCI_DEBUG(4, (CE_WARN, NULL, "key validation failed")); | |
| 7610 | |
| 7611 /* | |
| 7612 * key invalid, back out by registering key value of 0 | |
| 7613 */ | |
| 7614 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7615 "vhci_pgr_validate_and_register: backout on" | |
| 7616 " svp 0x%p being done\n", (void *)svp)); | |
| 7617 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
| 7618 | |
|
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7619 bcopy(prout->service_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
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7620 bzero(prout->service_key, MHIOC_RESV_KEY_SIZE); |
| 4851 | 7621 |
| 7622 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
| 7623 | |
| 7624 /* | |
| 7625 * Get a new path | |
| 7626 */ | |
| 7627 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH | | |
| 7628 MDI_SELECT_STANDBY_PATH, NULL, &pip); | |
| 7629 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
| 7630 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7631 "%s%d: vhci_pgr_validate_and_register: no valid pip\n", | |
| 7632 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 7633 return (0); | |
| 7634 } | |
| 7635 | |
| 7636 if ((rval = vhci_do_prout(svp)) != 1) { | |
| 7637 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7638 "vhci_pgr_validate_and_register: backout on" | |
| 7639 " svp 0x%p failed\n", (void *)svp)); | |
| 7640 vhci_print_prout_keys(vlun, "backout failed"); | |
| 7641 | |
| 7642 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 7643 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7644 " validation and backout failed", ddi_driver_name(cdip), | |
| 7645 ddi_get_instance(cdip))); | |
| 7646 if (rval == VHCI_PGR_ILLEGALOP) { | |
| 7647 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 7648 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7649 " already cleared", ddi_driver_name(cdip), | |
| 7650 ddi_get_instance(cdip))); | |
| 7651 rval = 1; | |
| 7652 } else | |
| 7653 rval = 0; | |
| 7654 } else { | |
| 7655 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 7656 "%s%d: vhci_pgr_validate_and_register: key" | |
| 7657 " validation failed, key backed out\n", | |
| 7658 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
| 7659 vhci_print_prout_keys(vlun, "v_pgr_val_reg: key backed out: "); | |
| 7660 } | |
| 7661 mdi_rele_path(pip); | |
| 7662 | |
| 7663 return (rval); | |
| 7664 } | |
| 7665 | |
| 7666 /* | |
| 7667 * taskq routine to dispatch a scsi cmd to vhci_scsi_start. This ensures | |
| 7668 * that vhci_scsi_start is not called in interrupt context. | |
| 7669 * As the upper layer gets TRAN_ACCEPT when the command is dispatched, we | |
| 7670 * need to complete the command if something goes wrong. | |
| 7671 */ | |
| 7672 static void | |
| 7673 vhci_dispatch_scsi_start(void *arg) | |
| 7674 { | |
|
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7675 struct vhci_pkt *vpkt = (struct vhci_pkt *)arg; |
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7676 struct scsi_pkt *tpkt = vpkt->vpkt_tgt_pkt; |
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7677 int rval = TRAN_BUSY; |
| 4851 | 7678 |
| 7679 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_dispatch_scsi_start: sending" | |
| 7680 " scsi-2 reserve for 0x%p\n", | |
| 7681 (void *)ADDR2DIP(&(vpkt->vpkt_tgt_pkt->pkt_address)))); | |
| 7682 | |
| 7683 /* | |
| 7684 * To prevent the taskq from being called recursively we set the | |
| 7685 * the VHCI_PKT_THRU_TASKQ bit in the vhci_pkt_states. | |
| 7686 */ | |
| 7687 vpkt->vpkt_state |= VHCI_PKT_THRU_TASKQ; | |
| 7688 | |
| 7689 /* | |
| 7690 * Wait for the transport to get ready to send packets | |
| 7691 * and if it times out, it will return something other than | |
| 7692 * TRAN_BUSY. The vhci_reserve_delay may want to | |
| 7693 * get tuned for other transports and is therefore a global. | |
| 7694 * Using delay since this routine is called by taskq dispatch | |
| 7695 * and not called during interrupt context. | |
| 7696 */ | |
| 7697 while ((rval = vhci_scsi_start(&(vpkt->vpkt_tgt_pkt->pkt_address), | |
| 7698 vpkt->vpkt_tgt_pkt)) == TRAN_BUSY) { | |
| 7699 delay(drv_usectohz(vhci_reserve_delay)); | |
| 7700 } | |
| 7701 | |
| 7702 switch (rval) { | |
| 7703 case TRAN_ACCEPT: | |
| 7704 return; | |
| 7705 | |
| 7706 default: | |
| 7707 /* | |
| 7708 * This pkt shall be retried, and to ensure another taskq | |
| 7709 * is dispatched for it, clear the VHCI_PKT_THRU_TASKQ | |
| 7710 * flag. | |
| 7711 */ | |
| 7712 vpkt->vpkt_state &= ~VHCI_PKT_THRU_TASKQ; | |
| 7713 | |
| 7714 /* Ensure that the pkt is retried without a reset */ | |
| 7715 tpkt->pkt_reason = CMD_ABORTED; | |
| 7716 tpkt->pkt_statistics |= STAT_ABORTED; | |
| 7717 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_dispatch_scsi_start: " | |
| 7718 "TRAN_rval %d returned for dip 0x%p", rval, | |
| 7719 (void *)ADDR2DIP(&(vpkt->vpkt_tgt_pkt->pkt_address)))); | |
| 7720 break; | |
| 7721 } | |
| 7722 | |
| 7723 /* | |
| 7724 * vpkt_org_vpkt should always be NULL here if the retry command | |
| 7725 * has been successfully dispatched. If vpkt_org_vpkt != NULL at | |
| 7726 * this point, it is an error so restore the original vpkt and | |
| 7727 * return an error to the target driver so it can retry the | |
| 7728 * command as appropriate. | |
| 7729 */ | |
| 7730 if (vpkt->vpkt_org_vpkt != NULL) { | |
| 7731 struct vhci_pkt *new_vpkt = vpkt; | |
| 7732 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
| 7733 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 7734 | |
| 7735 vpkt = vpkt->vpkt_org_vpkt; | |
| 7736 | |
| 7737 vpkt->vpkt_tgt_pkt->pkt_reason = tpkt->pkt_reason; | |
| 7738 vpkt->vpkt_tgt_pkt->pkt_statistics = tpkt->pkt_statistics; | |
| 7739 | |
| 7740 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 7741 new_vpkt->vpkt_tgt_pkt); | |
| 7742 | |
| 7743 tpkt = vpkt->vpkt_tgt_pkt; | |
| 7744 } | |
| 7745 | |
| 7746 if (tpkt->pkt_comp) { | |
|
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7747 tpkt->pkt_comp(tpkt); |
| 4851 | 7748 } |
| 7749 } | |
| 7750 | |
| 7751 static void | |
| 7752 vhci_initiate_auto_failback(void *arg) | |
| 7753 { | |
| 7754 struct scsi_vhci_lun *vlun = (struct scsi_vhci_lun *)arg; | |
| 7755 dev_info_t *vdip, *cdip; | |
| 7756 int held; | |
| 7757 | |
| 7758 cdip = vlun->svl_dip; | |
| 7759 vdip = ddi_get_parent(cdip); | |
| 7760 | |
| 7761 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
| 7762 | |
| 7763 /* | |
| 7764 * Perform a final check to see if the active path class is indeed | |
| 7765 * not the prefered path class. As in the time the auto failback | |
| 7766 * was dispatched, an external failover could have been detected. | |
| 7767 * [Some other host could have detected this condition and triggered | |
| 7768 * the auto failback before]. | |
| 7769 * In such a case if we go ahead with failover we will be negating the | |
| 7770 * whole purpose of auto failback. | |
| 7771 */ | |
| 7772 mutex_enter(&vlun->svl_mutex); | |
| 7773 if (vlun->svl_active_pclass != NULL) { | |
| 7774 char *best_pclass; | |
| 7775 struct scsi_failover_ops *fo; | |
| 7776 | |
| 7777 fo = vlun->svl_fops; | |
| 7778 | |
|
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7779 (void) fo->sfo_pathclass_next(NULL, &best_pclass, |
| 4851 | 7780 vlun->svl_fops_ctpriv); |
| 7781 if (strcmp(vlun->svl_active_pclass, best_pclass) == 0) { | |
| 7782 mutex_exit(&vlun->svl_mutex); | |
| 7783 VHCI_RELEASE_LUN(vlun); | |
| 7784 VHCI_DEBUG(1, (CE_NOTE, NULL, "Not initiating " | |
| 7785 "auto failback for %s as %s pathclass already " | |
| 7786 "active.\n", vlun->svl_lun_wwn, best_pclass)); | |
| 7787 return; | |
| 7788 } | |
| 7789 } | |
| 7790 mutex_exit(&vlun->svl_mutex); | |
| 7791 if (mdi_failover(vdip, vlun->svl_dip, MDI_FAILOVER_SYNC) | |
| 7792 == MDI_SUCCESS) { | |
| 7793 vhci_log(CE_NOTE, vdip, "!Auto failback operation " | |
| 7794 "succeeded for device %s (GUID %s)", | |
| 7795 ddi_node_name(cdip), vlun->svl_lun_wwn); | |
| 7796 } else { | |
| 7797 vhci_log(CE_NOTE, vdip, "!Auto failback operation " | |
| 7798 "failed for device %s (GUID %s)", | |
| 7799 ddi_node_name(cdip), vlun->svl_lun_wwn); | |
| 7800 } | |
| 7801 VHCI_RELEASE_LUN(vlun); | |
| 7802 } | |
| 7803 | |
| 7804 #ifdef DEBUG | |
| 7805 static void | |
| 7806 vhci_print_prin_keys(vhci_prin_readkeys_t *prin, int numkeys) | |
| 7807 { | |
|
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7808 vhci_clean_print(NULL, 5, "Current PGR Keys", |
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7809 (uchar_t *)prin, numkeys * 8); |
| 4851 | 7810 } |
| 7811 #endif | |
| 7812 | |
| 7813 static void | |
| 7814 vhci_print_prout_keys(scsi_vhci_lun_t *vlun, char *msg) | |
| 7815 { | |
| 7816 int i; | |
| 7817 vhci_prout_t *prout; | |
| 7818 char buf1[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7819 char buf2[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7820 char buf3[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7821 char buf4[4*MHIOC_RESV_KEY_SIZE + 1]; | |
| 7822 | |
| 7823 prout = &vlun->svl_prout; | |
| 7824 | |
| 7825 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7826 (void) sprintf(&buf1[4*i], "[%02x]", prout->res_key[i]); | |
| 7827 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7828 (void) sprintf(&buf2[(4*i)], "[%02x]", prout->service_key[i]); | |
| 7829 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7830 (void) sprintf(&buf3[4*i], "[%02x]", prout->active_res_key[i]); | |
| 7831 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
| 7832 (void) sprintf(&buf4[4*i], "[%02x]", | |
| 7833 prout->active_service_key[i]); | |
| 7834 | |
| 7835 /* Printing all in one go. Otherwise it will jumble up */ | |
| 7836 VHCI_DEBUG(5, (CE_CONT, NULL, "%s vlun 0x%p, thread 0x%p\n" | |
| 7837 "res_key: : %s\n" | |
| 7838 "service_key : %s\n" | |
| 7839 "active_res_key : %s\n" | |
| 7840 "active_service_key: %s\n", | |
| 7841 msg, (void *)vlun, (void *)curthread, buf1, buf2, buf3, buf4)); | |
| 7842 } | |
| 7843 | |
| 7844 /* | |
| 7845 * Called from vhci_scsi_start to update the pHCI pkt with target packet. | |
| 7846 */ | |
| 7847 static void | |
| 7848 vhci_update_pHCI_pkt(struct vhci_pkt *vpkt, struct scsi_pkt *pkt) | |
| 7849 { | |
| 7850 | |
| 7851 ASSERT(vpkt->vpkt_hba_pkt); | |
| 7852 | |
| 7853 vpkt->vpkt_hba_pkt->pkt_flags = pkt->pkt_flags; | |
| 7854 vpkt->vpkt_hba_pkt->pkt_flags |= FLAG_NOQUEUE; | |
| 7855 | |
| 7856 if ((vpkt->vpkt_hba_pkt->pkt_flags & FLAG_NOINTR) || | |
| 7857 MDI_PI_IS_SUSPENDED(vpkt->vpkt_path)) { | |
| 7858 /* | |
| 7859 * Polled Command is requested or HBA is in | |
| 7860 * suspended state | |
| 7861 */ | |
| 7862 vpkt->vpkt_hba_pkt->pkt_flags |= FLAG_NOINTR; | |
| 7863 vpkt->vpkt_hba_pkt->pkt_comp = NULL; | |
| 7864 } else { | |
| 7865 vpkt->vpkt_hba_pkt->pkt_comp = vhci_intr; | |
| 7866 } | |
| 7867 vpkt->vpkt_hba_pkt->pkt_time = pkt->pkt_time; | |
| 7868 bcopy(pkt->pkt_cdbp, vpkt->vpkt_hba_pkt->pkt_cdbp, | |
| 7869 vpkt->vpkt_tgt_init_cdblen); | |
| 7870 vpkt->vpkt_hba_pkt->pkt_resid = pkt->pkt_resid; | |
| 7871 | |
| 7872 /* Re-initialize the following pHCI packet state information */ | |
| 7873 vpkt->vpkt_hba_pkt->pkt_state = 0; | |
| 7874 vpkt->vpkt_hba_pkt->pkt_statistics = 0; | |
| 7875 vpkt->vpkt_hba_pkt->pkt_reason = 0; | |
| 7876 } | |
| 7877 | |
| 7878 static int | |
| 7879 vhci_scsi_bus_power(dev_info_t *parent, void *impl_arg, pm_bus_power_op_t op, | |
| 7880 void *arg, void *result) | |
| 7881 { | |
| 7882 int ret = DDI_SUCCESS; | |
| 7883 | |
| 7884 /* | |
| 7885 * Generic processing in MPxIO framework | |
| 7886 */ | |
| 7887 ret = mdi_bus_power(parent, impl_arg, op, arg, result); | |
| 7888 | |
| 7889 switch (ret) { | |
| 7890 case MDI_SUCCESS: | |
| 7891 ret = DDI_SUCCESS; | |
| 7892 break; | |
| 7893 case MDI_FAILURE: | |
| 7894 ret = DDI_FAILURE; | |
| 7895 break; | |
| 7896 default: | |
| 7897 break; | |
| 7898 } | |
| 7899 | |
| 7900 return (ret); | |
| 7901 } | |
| 7902 | |
| 7903 static int | |
| 7904 vhci_pHCI_cap(struct scsi_address *ap, char *cap, int val, int whom, | |
| 7905 mdi_pathinfo_t *pip) | |
| 7906 { | |
| 7907 dev_info_t *cdip; | |
| 7908 mdi_pathinfo_t *npip = NULL; | |
| 7909 scsi_vhci_priv_t *svp = NULL; | |
| 7910 struct scsi_address *pap = NULL; | |
| 7911 scsi_hba_tran_t *hba = NULL; | |
| 7912 int sps; | |
| 7913 int mps_flag; | |
| 7914 int rval = 0; | |
| 7915 | |
| 7916 mps_flag = (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH); | |
| 7917 if (pip) { | |
| 7918 /* | |
| 7919 * If the call is from vhci_pathinfo_state_change, | |
| 7920 * then this path was busy and is becoming ready to accept IO. | |
| 7921 */ | |
| 7922 ASSERT(ap != NULL); | |
| 7923 hba = ap->a_hba_tran; | |
| 7924 ASSERT(hba != NULL); | |
| 7925 rval = scsi_ifsetcap(ap, cap, val, whom); | |
| 7926 | |
| 7927 VHCI_DEBUG(2, (CE_NOTE, NULL, | |
| 7928 "!vhci_pHCI_cap: only on path %p, ap %p, rval %x\n", | |
| 7929 (void *)pip, (void *)ap, rval)); | |
| 7930 | |
| 7931 return (rval); | |
| 7932 } | |
| 7933 | |
| 7934 /* | |
| 7935 * Set capability on all the pHCIs. | |
| 7936 * If any path is busy, then the capability would be set by | |
| 7937 * vhci_pathinfo_state_change. | |
| 7938 */ | |
| 7939 | |
| 7940 cdip = ADDR2DIP(ap); | |
| 7941 ASSERT(cdip != NULL); | |
| 7942 sps = mdi_select_path(cdip, NULL, mps_flag, NULL, &pip); | |
| 7943 if ((sps != MDI_SUCCESS) || (pip == NULL)) { | |
| 7944 VHCI_DEBUG(2, (CE_WARN, NULL, | |
| 7945 "!vhci_pHCI_cap: Unable to get a path, dip 0x%p", | |
| 7946 (void *)cdip)); | |
| 7947 return (0); | |
| 7948 } | |
| 7949 | |
| 7950 again: | |
| 7951 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
| 7952 if (svp == NULL) { | |
| 7953 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_pHCI_cap: " | |
| 7954 "priv is NULL, pip 0x%p", (void *)pip)); | |
| 7955 mdi_rele_path(pip); | |
| 7956 return (rval); | |
| 7957 } | |
| 7958 | |
| 7959 if (svp->svp_psd == NULL) { | |
| 7960 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_pHCI_cap: " | |
| 7961 "psd is NULL, pip 0x%p, svp 0x%p", | |
| 7962 (void *)pip, (void *)svp)); | |
| 7963 mdi_rele_path(pip); | |
| 7964 return (rval); | |
| 7965 } | |
| 7966 | |
| 7967 pap = &svp->svp_psd->sd_address; | |
| 7968 ASSERT(pap != NULL); | |
| 7969 hba = pap->a_hba_tran; | |
| 7970 ASSERT(hba != NULL); | |
| 7971 | |
| 7972 if (hba->tran_setcap != NULL) { | |
| 7973 rval = scsi_ifsetcap(pap, cap, val, whom); | |
| 7974 | |
| 7975 VHCI_DEBUG(2, (CE_NOTE, NULL, | |
| 7976 "!vhci_pHCI_cap: path %p, ap %p, rval %x\n", | |
| 7977 (void *)pip, (void *)ap, rval)); | |
| 7978 | |
| 7979 /* | |
| 7980 * Select next path and issue the setcap, repeat | |
| 7981 * until all paths are exhausted | |
| 7982 */ | |
| 7983 sps = mdi_select_path(cdip, NULL, mps_flag, pip, &npip); | |
| 7984 if ((sps != MDI_SUCCESS) || (npip == NULL)) { | |
| 7985 mdi_rele_path(pip); | |
| 7986 return (1); | |
| 7987 } | |
| 7988 mdi_rele_path(pip); | |
| 7989 pip = npip; | |
| 7990 goto again; | |
| 7991 } | |
| 7992 mdi_rele_path(pip); | |
| 7993 return (rval); | |
| 7994 } | |
| 7995 | |
| 7996 static int | |
| 7997 vhci_scsi_bus_config(dev_info_t *pdip, uint_t flags, ddi_bus_config_op_t op, | |
| 7998 void *arg, dev_info_t **child) | |
| 7999 { | |
| 8000 char *guid; | |
| 8001 | |
| 8002 if (op == BUS_CONFIG_ONE || op == BUS_UNCONFIG_ONE) | |
| 8003 guid = vhci_devnm_to_guid((char *)arg); | |
| 8004 else | |
| 8005 guid = NULL; | |
| 8006 | |
| 8007 if (mdi_vhci_bus_config(pdip, flags, op, arg, child, guid) | |
| 8008 == MDI_SUCCESS) | |
| 8009 return (NDI_SUCCESS); | |
| 8010 else | |
| 8011 return (NDI_FAILURE); | |
| 8012 } | |
| 8013 | |
| 8014 /* | |
| 8015 * Take the original vhci_pkt, create a duplicate of the pkt for resending | |
| 8016 * as though it originated in ssd. | |
| 8017 */ | |
| 8018 static struct scsi_pkt * | |
| 8019 vhci_create_retry_pkt(struct vhci_pkt *vpkt) | |
| 8020 { | |
| 8021 struct vhci_pkt *new_vpkt = NULL; | |
| 8022 struct scsi_pkt *pkt = NULL; | |
| 8023 | |
| 8024 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
| 8025 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 8026 | |
| 8027 /* | |
| 8028 * Ensure consistent data at completion time by setting PKT_CONSISTENT | |
| 8029 */ | |
| 8030 pkt = vhci_scsi_init_pkt(&svp->svp_psd->sd_address, pkt, | |
| 8031 vpkt->vpkt_tgt_init_bp, vpkt->vpkt_tgt_init_cdblen, | |
|
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|
8032 vpkt->vpkt_tgt_init_scblen, 0, PKT_CONSISTENT, NULL_FUNC, NULL); |
| 4851 | 8033 if (pkt != NULL) { |
| 8034 new_vpkt = TGTPKT2VHCIPKT(pkt); | |
| 8035 | |
| 8036 pkt->pkt_address = vpkt->vpkt_tgt_pkt->pkt_address; | |
| 8037 pkt->pkt_flags = vpkt->vpkt_tgt_pkt->pkt_flags; | |
| 8038 pkt->pkt_time = vpkt->vpkt_tgt_pkt->pkt_time; | |
| 8039 pkt->pkt_comp = vpkt->vpkt_tgt_pkt->pkt_comp; | |
| 8040 | |
| 8041 pkt->pkt_resid = 0; | |
| 8042 pkt->pkt_statistics = 0; | |
| 8043 pkt->pkt_reason = 0; | |
| 8044 | |
| 8045 bcopy(vpkt->vpkt_tgt_pkt->pkt_cdbp, | |
| 8046 pkt->pkt_cdbp, vpkt->vpkt_tgt_init_cdblen); | |
| 8047 | |
| 8048 /* | |
| 8049 * Save a pointer to the original vhci_pkt | |
| 8050 */ | |
| 8051 new_vpkt->vpkt_org_vpkt = vpkt; | |
| 8052 } | |
| 8053 | |
| 8054 return (pkt); | |
| 8055 } | |
| 8056 | |
| 8057 /* | |
| 8058 * Copy the successful completion information from the hba packet into | |
| 8059 * the original target pkt from the upper layer. Returns the original | |
| 8060 * vpkt and destroys the new vpkt from the internal retry. | |
| 8061 */ | |
| 8062 static struct vhci_pkt * | |
| 8063 vhci_sync_retry_pkt(struct vhci_pkt *vpkt) | |
| 8064 { | |
| 8065 struct vhci_pkt *ret_vpkt = NULL; | |
| 8066 struct scsi_pkt *tpkt = NULL; | |
| 8067 struct scsi_pkt *hba_pkt = NULL; | |
| 8068 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
| 8069 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
| 8070 | |
| 8071 ASSERT(vpkt->vpkt_org_vpkt != NULL); | |
| 8072 VHCI_DEBUG(0, (CE_NOTE, NULL, "vhci_sync_retry_pkt: Retry pkt " | |
| 8073 "completed successfully!\n")); | |
| 8074 | |
| 8075 ret_vpkt = vpkt->vpkt_org_vpkt; | |
| 8076 tpkt = ret_vpkt->vpkt_tgt_pkt; | |
| 8077 hba_pkt = vpkt->vpkt_hba_pkt; | |
| 8078 | |
| 8079 /* | |
| 8080 * Copy the good status into the target driver's packet | |
| 8081 */ | |
| 8082 *(tpkt->pkt_scbp) = *(hba_pkt->pkt_scbp); | |
| 8083 tpkt->pkt_resid = hba_pkt->pkt_resid; | |
| 8084 tpkt->pkt_state = hba_pkt->pkt_state; | |
| 8085 tpkt->pkt_statistics = hba_pkt->pkt_statistics; | |
| 8086 tpkt->pkt_reason = hba_pkt->pkt_reason; | |
| 8087 | |
| 8088 /* | |
| 8089 * Destroy the internally created vpkt for the retry | |
| 8090 */ | |
| 8091 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
| 8092 vpkt->vpkt_tgt_pkt); | |
| 8093 | |
| 8094 return (ret_vpkt); | |
| 8095 } | |
| 8096 | |
| 8097 /* restart the request sense request */ | |
| 8098 static void | |
| 8099 vhci_uscsi_restart_sense(void *arg) | |
| 8100 { | |
| 8101 struct buf *rqbp; | |
| 8102 struct buf *bp; | |
| 8103 struct scsi_pkt *rqpkt = (struct scsi_pkt *)arg; | |
| 8104 mp_uscsi_cmd_t *mp_uscmdp; | |
| 8105 | |
| 8106 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8107 "vhci_uscsi_restart_sense: enter: rqpkt: %p", (void *)rqpkt)); | |
| 8108 | |
| 8109 if (scsi_transport(rqpkt) != TRAN_ACCEPT) { | |
| 8110 /* if it fails - need to wakeup the original command */ | |
| 8111 mp_uscmdp = rqpkt->pkt_private; | |
| 8112 bp = mp_uscmdp->cmdbp; | |
| 8113 rqbp = mp_uscmdp->rqbp; | |
| 8114 ASSERT(mp_uscmdp && bp && rqbp); | |
| 8115 scsi_free_consistent_buf(rqbp); | |
| 8116 scsi_destroy_pkt(rqpkt); | |
| 8117 bp->b_resid = bp->b_bcount; | |
| 8118 bioerror(bp, EIO); | |
| 8119 biodone(bp); | |
| 8120 } | |
| 8121 } | |
| 8122 | |
| 8123 /* | |
| 8124 * auto-rqsense is not enabled so we have to retrieve the request sense | |
| 8125 * manually. | |
| 8126 */ | |
| 8127 static int | |
| 8128 vhci_uscsi_send_sense(struct scsi_pkt *pkt, mp_uscsi_cmd_t *mp_uscmdp) | |
| 8129 { | |
| 8130 struct buf *rqbp, *cmdbp; | |
| 8131 struct scsi_pkt *rqpkt; | |
| 8132 int rval = 0; | |
| 8133 | |
| 8134 cmdbp = mp_uscmdp->cmdbp; | |
| 8135 ASSERT(cmdbp != NULL); | |
| 8136 | |
| 8137 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8138 "vhci_uscsi_send_sense: enter: bp: %p pkt: %p scmd: %p", | |
| 8139 (void *)cmdbp, (void *)pkt, (void *)mp_uscmdp)); | |
| 8140 /* set up the packet information and cdb */ | |
| 8141 if ((rqbp = scsi_alloc_consistent_buf(mp_uscmdp->ap, NULL, | |
| 8142 SENSE_LENGTH, B_READ, NULL, NULL)) == NULL) { | |
| 8143 return (-1); | |
| 8144 } | |
| 8145 | |
| 8146 if ((rqpkt = scsi_init_pkt(mp_uscmdp->ap, NULL, rqbp, | |
| 8147 CDB_GROUP0, 1, 0, PKT_CONSISTENT, NULL, NULL)) == NULL) { | |
| 8148 scsi_free_consistent_buf(rqbp); | |
| 8149 return (-1); | |
| 8150 } | |
| 8151 | |
| 8152 (void) scsi_setup_cdb((union scsi_cdb *)(intptr_t)rqpkt->pkt_cdbp, | |
| 8153 SCMD_REQUEST_SENSE, 0, SENSE_LENGTH, 0); | |
| 8154 | |
| 8155 mp_uscmdp->rqbp = rqbp; | |
| 8156 rqbp->b_private = mp_uscmdp; | |
| 8157 rqpkt->pkt_flags |= FLAG_SENSING; | |
| 8158 rqpkt->pkt_time = 60; | |
| 8159 rqpkt->pkt_comp = vhci_uscsi_iodone; | |
| 8160 rqpkt->pkt_private = mp_uscmdp; | |
| 8161 | |
|
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|
8162 /* |
|
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|
8163 * NOTE: This code path is related to MPAPI uscsi(7I), so path |
|
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8164 * selection is not based on path_instance. |
|
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|
8165 */ |
|
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|
8166 if (scsi_pkt_allocated_correctly(rqpkt)) |
|
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|
8167 rqpkt->pkt_path_instance = 0; |
|
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|
8168 |
| 4851 | 8169 /* get her done */ |
| 8170 switch (scsi_transport(rqpkt)) { | |
| 8171 case TRAN_ACCEPT: | |
| 8172 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
| 8173 "transport accepted.")); | |
| 8174 break; | |
| 8175 case TRAN_BUSY: | |
| 8176 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
| 8177 "transport busy, setting timeout.")); | |
| 8178 vhci_restart_timeid = timeout(vhci_uscsi_restart_sense, rqpkt, | |
| 8179 (drv_usectohz(5 * 1000000))); | |
| 8180 break; | |
| 8181 default: | |
| 8182 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
| 8183 "transport failed")); | |
| 8184 scsi_free_consistent_buf(rqbp); | |
| 8185 scsi_destroy_pkt(rqpkt); | |
| 8186 rval = -1; | |
| 8187 } | |
| 8188 | |
| 8189 return (rval); | |
| 8190 } | |
| 8191 | |
| 8192 /* | |
| 8193 * done routine for the mpapi uscsi command - this is behaving as though | |
| 8194 * FLAG_DIAGNOSE is set meaning there are no retries except for a manual | |
| 8195 * request sense. | |
| 8196 */ | |
| 8197 void | |
| 8198 vhci_uscsi_iodone(struct scsi_pkt *pkt) | |
| 8199 { | |
| 8200 struct buf *bp; | |
| 8201 mp_uscsi_cmd_t *mp_uscmdp; | |
| 8202 struct uscsi_cmd *uscmdp; | |
| 8203 struct scsi_arq_status *arqstat; | |
| 8204 int err; | |
| 8205 | |
| 8206 mp_uscmdp = (mp_uscsi_cmd_t *)pkt->pkt_private; | |
| 8207 uscmdp = mp_uscmdp->uscmdp; | |
| 8208 bp = mp_uscmdp->cmdbp; | |
| 8209 ASSERT(bp != NULL); | |
| 8210 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8211 "vhci_uscsi_iodone: enter: bp: %p pkt: %p scmd: %p", | |
| 8212 (void *)bp, (void *)pkt, (void *)mp_uscmdp)); | |
| 8213 /* Save the status and the residual into the uscsi_cmd struct */ | |
| 8214 uscmdp->uscsi_status = ((*(pkt)->pkt_scbp) & STATUS_MASK); | |
| 8215 uscmdp->uscsi_resid = bp->b_resid; | |
| 8216 | |
| 8217 /* return on a very successful command */ | |
| 8218 if (pkt->pkt_reason == CMD_CMPLT && | |
| 8219 SCBP_C(pkt) == 0 && ((pkt->pkt_flags & FLAG_SENSING) == 0) && | |
| 8220 pkt->pkt_resid == 0) { | |
| 8221 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
| 8222 scsi_destroy_pkt(pkt); | |
| 8223 biodone(bp); | |
| 8224 return; | |
| 8225 } | |
| 8226 VHCI_DEBUG(4, (CE_NOTE, NULL, "iodone: reason=0x%x " | |
| 8227 " pkt_resid=%ld pkt_state: 0x%x b_count: %ld b_resid: %ld", | |
| 8228 pkt->pkt_reason, pkt->pkt_resid, | |
| 8229 pkt->pkt_state, bp->b_bcount, bp->b_resid)); | |
| 8230 | |
| 8231 err = EIO; | |
| 8232 | |
| 8233 arqstat = (struct scsi_arq_status *)(intptr_t)(pkt->pkt_scbp); | |
| 8234 if (pkt->pkt_reason != CMD_CMPLT) { | |
| 8235 /* | |
| 8236 * The command did not complete. | |
| 8237 */ | |
| 8238 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8239 "vhci_uscsi_iodone: command did not complete." | |
| 8240 " reason: %x flag: %x", pkt->pkt_reason, pkt->pkt_flags)); | |
| 8241 if (pkt->pkt_flags & FLAG_SENSING) { | |
| 8242 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
| 8243 } else if (pkt->pkt_reason == CMD_TIMEOUT) { | |
| 8244 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_HARDERR); | |
| 8245 err = ETIMEDOUT; | |
| 8246 } | |
| 8247 } else if (pkt->pkt_state & STATE_ARQ_DONE && mp_uscmdp->arq_enabled) { | |
| 8248 /* | |
| 8249 * The auto-rqsense happened, and the packet has a filled-in | |
| 8250 * scsi_arq_status structure, pointed to by pkt_scbp. | |
| 8251 */ | |
| 8252 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8253 "vhci_uscsi_iodone: received auto-requested sense")); | |
| 8254 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
| 8255 /* get the amount of data to copy into rqbuf */ | |
| 8256 int rqlen = SENSE_LENGTH - arqstat->sts_rqpkt_resid; | |
| 8257 rqlen = min(((int)uscmdp->uscsi_rqlen), rqlen); | |
| 8258 uscmdp->uscsi_rqresid = uscmdp->uscsi_rqlen - rqlen; | |
| 8259 uscmdp->uscsi_rqstatus = | |
| 8260 *((char *)&arqstat->sts_rqpkt_status); | |
| 8261 if (uscmdp->uscsi_rqbuf && uscmdp->uscsi_rqlen && | |
| 8262 rqlen != 0) { | |
| 8263 bcopy(&(arqstat->sts_sensedata), | |
| 8264 uscmdp->uscsi_rqbuf, rqlen); | |
| 8265 } | |
| 8266 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
| 8267 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8268 "vhci_uscsi_iodone: ARQ " | |
| 8269 "uscsi_rqstatus=0x%x uscsi_rqresid=%d rqlen: %d " | |
| 8270 "xfer: %d rqpkt_resid: %d\n", | |
| 8271 uscmdp->uscsi_rqstatus, uscmdp->uscsi_rqresid, | |
| 8272 uscmdp->uscsi_rqlen, rqlen, | |
| 8273 arqstat->sts_rqpkt_resid)); | |
| 8274 } | |
| 8275 } else if (pkt->pkt_flags & FLAG_SENSING) { | |
| 8276 struct buf *rqbp; | |
| 8277 struct scsi_status *rqstatus; | |
| 8278 | |
| 8279 rqstatus = (struct scsi_status *)pkt->pkt_scbp; | |
| 8280 /* a manual request sense was done - get the information */ | |
| 8281 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
| 8282 int rqlen = SENSE_LENGTH - pkt->pkt_resid; | |
| 8283 | |
| 8284 rqbp = mp_uscmdp->rqbp; | |
| 8285 /* get the amount of data to copy into rqbuf */ | |
| 8286 rqlen = min(((int)uscmdp->uscsi_rqlen), rqlen); | |
| 8287 uscmdp->uscsi_rqresid = uscmdp->uscsi_rqlen - rqlen; | |
| 8288 uscmdp->uscsi_rqstatus = *((char *)rqstatus); | |
| 8289 if (uscmdp->uscsi_rqlen && uscmdp->uscsi_rqbuf) { | |
| 8290 bcopy(rqbp->b_un.b_addr, uscmdp->uscsi_rqbuf, | |
| 8291 rqlen); | |
| 8292 } | |
| 8293 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
| 8294 scsi_free_consistent_buf(rqbp); | |
| 8295 } | |
| 8296 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_uscsi_iodone: FLAG_SENSING" | |
| 8297 "uscsi_rqstatus=0x%x uscsi_rqresid=%d\n", | |
| 8298 uscmdp->uscsi_rqstatus, uscmdp->uscsi_rqresid)); | |
| 8299 } else { | |
| 8300 struct scsi_status *status = | |
| 8301 (struct scsi_status *)pkt->pkt_scbp; | |
| 8302 /* | |
| 8303 * Command completed and we're not getting sense. Check for | |
| 8304 * errors and decide what to do next. | |
| 8305 */ | |
| 8306 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8307 "vhci_uscsi_iodone: command appears complete: reason: %x", | |
| 8308 pkt->pkt_reason)); | |
| 8309 if (status->sts_chk) { | |
| 8310 /* need to manually get the request sense */ | |
| 8311 if (vhci_uscsi_send_sense(pkt, mp_uscmdp) == 0) { | |
| 8312 scsi_destroy_pkt(pkt); | |
| 8313 return; | |
| 8314 } | |
| 8315 } else { | |
| 8316 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8317 "vhci_chk_err: appears complete")); | |
| 8318 err = 0; | |
| 8319 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
| 8320 if (pkt->pkt_resid) { | |
| 8321 bp->b_resid += pkt->pkt_resid; | |
| 8322 } | |
| 8323 } | |
| 8324 } | |
| 8325 | |
| 8326 if (err) { | |
| 8327 if (bp->b_resid == 0) | |
| 8328 bp->b_resid = bp->b_bcount; | |
| 8329 bioerror(bp, err); | |
| 8330 bp->b_flags |= B_ERROR; | |
| 8331 } | |
| 8332 | |
| 8333 scsi_destroy_pkt(pkt); | |
| 8334 biodone(bp); | |
| 8335 | |
| 8336 VHCI_DEBUG(4, (CE_WARN, NULL, "vhci_uscsi_iodone: exit")); | |
| 8337 } | |
| 8338 | |
| 8339 /* | |
| 8340 * start routine for the mpapi uscsi command | |
| 8341 */ | |
| 8342 int | |
| 8343 vhci_uscsi_iostart(struct buf *bp) | |
| 8344 { | |
| 8345 struct scsi_pkt *pkt; | |
| 8346 struct uscsi_cmd *uscmdp; | |
| 8347 mp_uscsi_cmd_t *mp_uscmdp; | |
| 8348 int stat_size, rval; | |
| 8349 int retry = 0; | |
| 8350 | |
| 8351 ASSERT(bp->b_private != NULL); | |
| 8352 | |
| 8353 mp_uscmdp = (mp_uscsi_cmd_t *)bp->b_private; | |
| 8354 uscmdp = mp_uscmdp->uscmdp; | |
| 8355 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
| 8356 stat_size = SENSE_LENGTH; | |
| 8357 } else { | |
| 8358 stat_size = 1; | |
| 8359 } | |
| 8360 | |
| 8361 pkt = scsi_init_pkt(mp_uscmdp->ap, NULL, bp, uscmdp->uscsi_cdblen, | |
| 8362 stat_size, 0, 0, SLEEP_FUNC, NULL); | |
| 8363 if (pkt == NULL) { | |
| 8364 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8365 "vhci_uscsi_iostart: rval: EINVAL")); | |
| 8366 bp->b_resid = bp->b_bcount; | |
| 8367 uscmdp->uscsi_resid = bp->b_bcount; | |
| 8368 bioerror(bp, EINVAL); | |
| 8369 biodone(bp); | |
| 8370 return (EINVAL); | |
| 8371 } | |
| 8372 | |
| 8373 pkt->pkt_time = uscmdp->uscsi_timeout; | |
| 8374 bcopy(uscmdp->uscsi_cdb, pkt->pkt_cdbp, (size_t)uscmdp->uscsi_cdblen); | |
| 8375 pkt->pkt_comp = vhci_uscsi_iodone; | |
| 8376 pkt->pkt_private = mp_uscmdp; | |
| 8377 if (uscmdp->uscsi_flags & USCSI_SILENT) | |
| 8378 pkt->pkt_flags |= FLAG_SILENT; | |
| 8379 if (uscmdp->uscsi_flags & USCSI_ISOLATE) | |
| 8380 pkt->pkt_flags |= FLAG_ISOLATE; | |
| 8381 if (uscmdp->uscsi_flags & USCSI_DIAGNOSE) | |
| 8382 pkt->pkt_flags |= FLAG_DIAGNOSE; | |
| 8383 if (uscmdp->uscsi_flags & USCSI_RENEGOT) { | |
| 8384 pkt->pkt_flags |= FLAG_RENEGOTIATE_WIDE_SYNC; | |
| 8385 } | |
| 8386 VHCI_DEBUG(4, (CE_WARN, NULL, | |
| 8387 "vhci_uscsi_iostart: ap: %p pkt: %p pcdbp: %p uscmdp: %p" | |
| 8388 " ucdbp: %p pcdblen: %d bp: %p count: %ld pip: %p" | |
| 8389 " stat_size: %d", | |
| 8390 (void *)mp_uscmdp->ap, (void *)pkt, (void *)pkt->pkt_cdbp, | |
| 8391 (void *)uscmdp, (void *)uscmdp->uscsi_cdb, pkt->pkt_cdblen, | |
| 8392 (void *)bp, bp->b_bcount, (void *)mp_uscmdp->pip, stat_size)); | |
| 8393 | |
|
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8394 /* |
|
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8395 * NOTE: This code path is related to MPAPI uscsi(7I), so path |
|
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8396 * selection is not based on path_instance. |
|
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8397 */ |
|
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8398 if (scsi_pkt_allocated_correctly(pkt)) |
|
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8399 pkt->pkt_path_instance = 0; |
|
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|
8400 |
| 4851 | 8401 while (((rval = scsi_transport(pkt)) == TRAN_BUSY) && |
| 8402 retry < vhci_uscsi_retry_count) { | |
| 8403 delay(drv_usectohz(vhci_uscsi_delay)); | |
| 8404 retry++; | |
| 8405 } | |
| 8406 if (retry >= vhci_uscsi_retry_count) { | |
| 8407 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8408 "vhci_uscsi_iostart: tran_busy - retry: %d", retry)); | |
| 8409 } | |
| 8410 switch (rval) { | |
| 8411 case TRAN_ACCEPT: | |
| 8412 rval = 0; | |
| 8413 break; | |
| 8414 | |
| 8415 default: | |
| 8416 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8417 "vhci_uscsi_iostart: rval: %d count: %ld res: %ld", | |
| 8418 rval, bp->b_bcount, bp->b_resid)); | |
| 8419 bp->b_resid = bp->b_bcount; | |
| 8420 uscmdp->uscsi_resid = bp->b_bcount; | |
| 8421 bioerror(bp, EIO); | |
| 8422 scsi_destroy_pkt(pkt); | |
| 8423 biodone(bp); | |
| 8424 rval = EIO; | |
| 8425 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
| 8426 break; | |
| 8427 } | |
| 8428 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
| 8429 "vhci_uscsi_iostart: exit: rval: %d", rval)); | |
| 8430 return (rval); | |
| 8431 } | |
|
6941
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
changeset
|
8432 |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
changeset
|
8433 #ifdef DEBUG |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8434 |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
changeset
|
8435 extern struct scsi_key_strings scsi_cmds[]; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8436 |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
changeset
|
8437 static char * |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
changeset
|
8438 vhci_print_scsi_cmd(char cmd) |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8439 { |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8440 char tmp[64]; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8441 char *cpnt; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8442 |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8443 cpnt = scsi_cmd_name(cmd, scsi_cmds, tmp); |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8444 /* tmp goes out of scope on return and caller sees garbage */ |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8445 if (cpnt == tmp) { |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8446 cpnt = "Unknown Command"; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8447 } |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8448 return (cpnt); |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8449 } |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8450 |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8451 extern uchar_t scsi_cdb_size[]; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8452 |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8453 static void |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8454 vhci_print_cdb(dev_info_t *dip, uint_t level, char *title, uchar_t *cdb) |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8455 { |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8456 int len = scsi_cdb_size[CDB_GROUPID(cdb[0])]; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8457 char buf[256]; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8458 |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8459 if (level == CE_NOTE) { |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8460 vhci_log(level, dip, "path cmd %s\n", |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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|
8461 vhci_print_scsi_cmd(*cdb)); |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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|
8462 return; |
|
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changeset
|
8463 } |
|
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changeset
|
8464 |
|
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changeset
|
8465 (void) sprintf(buf, "%s for cmd(%s)", title, vhci_print_scsi_cmd(*cdb)); |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8466 vhci_clean_print(dip, level, buf, cdb, len); |
|
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changeset
|
8467 } |
|
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changeset
|
8468 |
|
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changeset
|
8469 static void |
|
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|
8470 vhci_clean_print(dev_info_t *dev, uint_t level, char *title, uchar_t *data, |
|
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|
8471 int len) |
|
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|
8472 { |
|
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changeset
|
8473 int i; |
|
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|
8474 int c; |
|
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|
8475 char *format; |
|
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changeset
|
8476 char buf[256]; |
|
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diff
changeset
|
8477 uchar_t byte; |
|
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changeset
|
8478 |
|
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changeset
|
8479 (void) sprintf(buf, "%s:\n", title); |
|
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changeset
|
8480 vhci_log(level, dev, "%s", buf); |
|
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changeset
|
8481 level = CE_CONT; |
|
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changeset
|
8482 for (i = 0; i < len; ) { |
|
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changeset
|
8483 buf[0] = 0; |
|
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changeset
|
8484 for (c = 0; c < 8 && i < len; c++, i++) { |
|
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changeset
|
8485 byte = (uchar_t)data[i]; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8486 if (byte < 0x10) |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8487 format = "0x0%x "; |
|
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diff
changeset
|
8488 else |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8489 format = "0x%x "; |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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diff
changeset
|
8490 (void) sprintf(&buf[(int)strlen(buf)], format, byte); |
|
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diff
changeset
|
8491 } |
|
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diff
changeset
|
8492 (void) sprintf(&buf[(int)strlen(buf)], "\n"); |
|
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6459247 scsi_vhci does not return correct value for dma-max property
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changeset
|
8493 |
|
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diff
changeset
|
8494 vhci_log(level, dev, "%s\n", buf); |
|
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changeset
|
8495 } |
|
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changeset
|
8496 } |
|
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changeset
|
8497 #endif |