Mercurial > illumos > illumos-gate
annotate usr/src/uts/common/io/scsi/adapters/scsi_vhci/scsi_vhci.c @ 7191:174d749b3f22
6520112 simultaneous DKIOCSTATE calls causes panic
6531441 multiple hald-addon-storage processes expose race in scsi_watch_thread when ejecting CDs
author | tl223370 |
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date | Fri, 25 Jul 2008 02:31:13 -0700 |
parents | 4b91990abccd |
children | 0259de900d45 |
rev | line source |
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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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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 | |
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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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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) || | |
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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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diff
changeset
|
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; | |
7121
4b91990abccd
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diff
changeset
|
2123 int path_instance = 0; |
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 /* | |
7047
8e4f1d0e9dd8
6722672 sd does not clear pkt_path_instance when retrying commands
gap
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diff
changeset
|
2194 * Get path_instance. Non-zero with FLAG_PKT_PATH_INSTANCE set |
8e4f1d0e9dd8
6722672 sd does not clear pkt_path_instance when retrying commands
gap
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6962
diff
changeset
|
2195 * indicates that mdi_select_path should be called to select a |
8e4f1d0e9dd8
6722672 sd does not clear pkt_path_instance when retrying commands
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diff
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|
2196 * specific instance. |
6640
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diff
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|
2197 * |
c92ca9b95b9c
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diff
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|
2198 * NB: Condition pkt_path_instance reference on proper allocation. |
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
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diff
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|
2199 */ |
7121
4b91990abccd
6723122 assertion failed: (path_instance == 0) || (path_instance == mdi_pi_get_path_instance(vpkt->vpkt_path
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diff
changeset
|
2200 if ((vpkt->vpkt_tgt_pkt->pkt_flags & FLAG_PKT_PATH_INSTANCE) && |
4b91990abccd
6723122 assertion failed: (path_instance == 0) || (path_instance == mdi_pi_get_path_instance(vpkt->vpkt_path
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diff
changeset
|
2201 scsi_pkt_allocated_correctly(vpkt->vpkt_tgt_pkt)) { |
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
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diff
changeset
|
2202 path_instance = vpkt->vpkt_tgt_pkt->pkt_path_instance; |
7121
4b91990abccd
6723122 assertion failed: (path_instance == 0) || (path_instance == mdi_pi_get_path_instance(vpkt->vpkt_path
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7047
diff
changeset
|
2203 } |
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
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diff
changeset
|
2204 |
c92ca9b95b9c
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diff
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|
2205 /* |
4851 | 2206 * If reservation is active bind the transport directly to the pip |
2207 * with the reservation. | |
2208 */ | |
2209 if (vpkt->vpkt_hba_pkt == NULL) { | |
2210 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
2211 if (MDI_PI_IS_ONLINE(vlun->svl_resrv_pip)) { | |
2212 pip = vlun->svl_resrv_pip; | |
2213 mdi_hold_path(pip); | |
2214 vlun->svl_waiting_for_activepath = 0; | |
2215 rval = MDI_SUCCESS; | |
2216 goto bind_path; | |
2217 } else { | |
2218 if (pgr_sema_held) { | |
2219 sema_v(&vlun->svl_pgr_sema); | |
2220 } | |
2221 return (TRAN_BUSY); | |
2222 } | |
2223 } | |
2224 try_again: | |
6640
c92ca9b95b9c
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diff
changeset
|
2225 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, |
c92ca9b95b9c
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diff
changeset
|
2226 path_instance ? MDI_SELECT_PATH_INSTANCE : 0, |
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diff
changeset
|
2227 (void *)(intptr_t)path_instance, &pip); |
4851 | 2228 if (rval == MDI_BUSY) { |
2229 if (pgr_sema_held) { | |
2230 sema_v(&vlun->svl_pgr_sema); | |
2231 } | |
2232 return (TRAN_BUSY); | |
2233 } else if (rval == MDI_DEVI_ONLINING) { | |
2234 /* | |
2235 * if we are here then we are in the midst of | |
2236 * an attach/probe of the client device. | |
2237 * We attempt to bind to ONLINE path if available, | |
2238 * else it is OK to bind to a STANDBY path (instead | |
2239 * of triggering a failover) because IO associated | |
2240 * with attach/probe (eg. INQUIRY, block 0 read) | |
2241 * are completed by targets even on passive paths | |
2242 * If no ONLINE paths available, it is important | |
2243 * to set svl_waiting_for_activepath for two | |
2244 * reasons: (1) avoid sense analysis in the | |
2245 * "external failure detection" codepath in | |
2246 * vhci_intr(). Failure to do so will result in | |
2247 * infinite loop (unless an ONLINE path becomes | |
2248 * available at some point) (2) avoid | |
2249 * unnecessary failover (see "---Waiting For Active | |
2250 * Path---" comment below). | |
2251 */ | |
2252 VHCI_DEBUG(1, (CE_NOTE, NULL, "!%p in onlining " | |
2253 "state\n", (void *)cdip)); | |
2254 pip = NULL; | |
2255 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, | |
2256 mps_flag, NULL, &pip); | |
2257 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
2258 if (vlun->svl_waiting_for_activepath == 0) { | |
2259 vlun->svl_waiting_for_activepath = 1; | |
2260 vlun->svl_wfa_time = ddi_get_time(); | |
2261 } | |
2262 mps_flag |= MDI_SELECT_STANDBY_PATH; | |
2263 rval = mdi_select_path(cdip, | |
2264 vpkt->vpkt_tgt_init_bp, | |
2265 mps_flag, NULL, &pip); | |
2266 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
2267 if (pgr_sema_held) { | |
2268 sema_v(&vlun->svl_pgr_sema); | |
2269 } | |
2270 return (TRAN_FATAL_ERROR); | |
2271 } | |
2272 goto bind_path; | |
2273 } | |
2274 } else if (rval == MDI_FAILURE) { | |
2275 if (pgr_sema_held) { | |
2276 sema_v(&vlun->svl_pgr_sema); | |
2277 } | |
2278 return (TRAN_FATAL_ERROR); | |
2279 } | |
2280 | |
2281 if ((pip == NULL) || (rval == MDI_NOPATH)) { | |
2282 while (vlun->svl_waiting_for_activepath) { | |
2283 /* | |
2284 * ---Waiting For Active Path--- | |
2285 * This device was discovered across a | |
2286 * passive path; lets wait for a little | |
2287 * bit, hopefully an active path will | |
2288 * show up obviating the need for a | |
2289 * failover | |
2290 */ | |
2291 tnow = ddi_get_time(); | |
2292 if (tnow - vlun->svl_wfa_time >= 60) { | |
2293 vlun->svl_waiting_for_activepath = 0; | |
2294 } else { | |
2295 drv_usecwait(1000); | |
2296 if (vlun->svl_waiting_for_activepath | |
2297 == 0) { | |
2298 /* | |
2299 * an active path has come | |
2300 * online! | |
2301 */ | |
2302 goto try_again; | |
2303 } | |
2304 } | |
2305 } | |
2306 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
2307 if (!held) { | |
2308 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
2309 "!Lun not held\n")); | |
2310 if (pgr_sema_held) { | |
2311 sema_v(&vlun->svl_pgr_sema); | |
2312 } | |
2313 return (TRAN_BUSY); | |
2314 } | |
2315 /* | |
2316 * now that the LUN is stable, one last check | |
2317 * to make sure no other changes sneaked in | |
2318 * (like a path coming online or a | |
2319 * failover initiated by another thread) | |
2320 */ | |
2321 pip = NULL; | |
2322 rval = mdi_select_path(cdip, vpkt->vpkt_tgt_init_bp, | |
2323 0, NULL, &pip); | |
2324 if (pip != NULL) { | |
2325 VHCI_RELEASE_LUN(vlun); | |
2326 vlun->svl_waiting_for_activepath = 0; | |
2327 goto bind_path; | |
2328 } | |
2329 | |
2330 /* | |
2331 * Check if there is an ONLINE path OR a STANDBY path | |
2332 * available. If none is available, do not attempt | |
2333 * to do a failover, just return a fatal error at this | |
2334 * point. | |
2335 */ | |
2336 npip = NULL; | |
2337 rval = mdi_select_path(cdip, NULL, | |
2338 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
2339 NULL, &npip); | |
2340 if ((npip == NULL) || (rval != MDI_SUCCESS)) { | |
2341 /* | |
2342 * No paths available, jus return FATAL error. | |
2343 */ | |
2344 VHCI_RELEASE_LUN(vlun); | |
2345 if (pgr_sema_held) { | |
2346 sema_v(&vlun->svl_pgr_sema); | |
2347 } | |
2348 return (TRAN_FATAL_ERROR); | |
2349 } | |
2350 mdi_rele_path(npip); | |
2351 VHCI_DEBUG(1, (CE_NOTE, NULL, "!invoking " | |
2352 "mdi_failover\n")); | |
2353 rval = mdi_failover(vhci->vhci_dip, cdip, | |
2354 MDI_FAILOVER_ASYNC); | |
2355 if (rval == MDI_FAILURE) { | |
2356 VHCI_RELEASE_LUN(vlun); | |
2357 if (pgr_sema_held) { | |
2358 sema_v(&vlun->svl_pgr_sema); | |
2359 } | |
2360 return (TRAN_FATAL_ERROR); | |
2361 } else if (rval == MDI_BUSY) { | |
2362 VHCI_RELEASE_LUN(vlun); | |
2363 if (pgr_sema_held) { | |
2364 sema_v(&vlun->svl_pgr_sema); | |
2365 } | |
2366 return (TRAN_BUSY); | |
2367 } else { | |
2368 if (pgr_sema_held) { | |
2369 sema_v(&vlun->svl_pgr_sema); | |
2370 } | |
2371 return (TRAN_BUSY); | |
2372 } | |
2373 } | |
2374 vlun->svl_waiting_for_activepath = 0; | |
2375 bind_path: | |
2376 vpkt->vpkt_path = pip; | |
2377 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
2378 ASSERT(svp != NULL); | |
2379 | |
2380 psd = svp->svp_psd; | |
2381 ASSERT(psd != NULL); | |
2382 address = &psd->sd_address; | |
2383 } else { | |
2384 pkt = vpkt->vpkt_hba_pkt; | |
2385 address = &pkt->pkt_address; | |
2386 } | |
2387 | |
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2388 /* Verify match of specified path_instance and selected path_instance */ |
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2389 ASSERT((path_instance == 0) || |
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2390 (path_instance == mdi_pi_get_path_instance(vpkt->vpkt_path))); |
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2391 |
4851 | 2392 /* |
2393 * For PKT_PARTIAL_DMA case, call pHCI's scsi_init_pkt whenever | |
2394 * target driver calls vhci_scsi_init_pkt. | |
2395 */ | |
2396 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) && | |
2397 vpkt->vpkt_path && vpkt->vpkt_hba_pkt) { | |
2398 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
2399 "vhci_bind_transport: PKT_PARTIAL_DMA " | |
2400 "vpkt 0x%p, path 0x%p hba_pkt 0x%p\n", | |
2401 (void *)vpkt, (void *)vpkt->vpkt_path, (void *)pkt)); | |
2402 pkt = vpkt->vpkt_hba_pkt; | |
2403 address = &pkt->pkt_address; | |
2404 } | |
2405 | |
2406 if (pkt == NULL || (vpkt->vpkt_flags & CFLAG_DMA_PARTIAL)) { | |
2407 pkt = scsi_init_pkt(address, pkt, | |
2408 vpkt->vpkt_tgt_init_bp, vpkt->vpkt_tgt_init_cdblen, | |
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2409 vpkt->vpkt_tgt_init_scblen, 0, flags, func, NULL); |
4851 | 2410 |
2411 if (pkt == NULL) { | |
2412 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
2413 "!bind transport: 0x%p 0x%p 0x%p\n", | |
2414 (void *)vhci, (void *)psd, (void *)vpkt)); | |
2415 if ((vpkt->vpkt_hba_pkt == NULL) && vpkt->vpkt_path) { | |
2416 MDI_PI_ERRSTAT(vpkt->vpkt_path, | |
2417 MDI_PI_TRANSERR); | |
2418 mdi_rele_path(vpkt->vpkt_path); | |
2419 vpkt->vpkt_path = NULL; | |
2420 } | |
2421 if (pgr_sema_held) { | |
2422 sema_v(&vlun->svl_pgr_sema); | |
2423 } | |
2424 /* | |
2425 * Looks like a fatal error. | |
2426 * May be device disappeared underneath. | |
2427 * Give another chance to target driver for a retry to | |
2428 * get another path. | |
2429 */ | |
2430 return (TRAN_BUSY); | |
2431 } | |
2432 } | |
2433 | |
2434 pkt->pkt_private = vpkt; | |
2435 vpkt->vpkt_hba_pkt = pkt; | |
2436 return (TRAN_ACCEPT); | |
2437 } | |
2438 | |
2439 | |
2440 /*PRINTFLIKE3*/ | |
2441 void | |
2442 vhci_log(int level, dev_info_t *dip, const char *fmt, ...) | |
2443 { | |
2444 char buf[256]; | |
2445 va_list ap; | |
2446 | |
2447 va_start(ap, fmt); | |
2448 (void) vsprintf(buf, fmt, ap); | |
2449 va_end(ap); | |
2450 | |
2451 scsi_log(dip, "scsi_vhci", level, buf); | |
2452 } | |
2453 | |
2454 /* do a PGR out with the information we've saved away */ | |
2455 static int | |
2456 vhci_do_prout(scsi_vhci_priv_t *svp) | |
2457 { | |
2458 | |
2459 struct scsi_pkt *new_pkt; | |
2460 struct buf *bp; | |
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2461 scsi_vhci_lun_t *vlun = svp->svp_svl; |
4851 | 2462 int rval, retry, nr_retry, ua_retry; |
2463 struct scsi_extended_sense *sns; | |
2464 | |
2465 bp = getrbuf(KM_SLEEP); | |
2466 bp->b_flags = B_WRITE; | |
2467 bp->b_resid = 0; | |
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2468 bp->b_un.b_addr = (caddr_t)&vlun->svl_prout; |
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|
2469 bp->b_bcount = vlun->svl_bcount; |
4851 | 2470 |
2471 VHCI_INCR_PATH_CMDCOUNT(svp); | |
2472 | |
2473 new_pkt = scsi_init_pkt(&svp->svp_psd->sd_address, NULL, bp, | |
2474 CDB_GROUP1, sizeof (struct scsi_arq_status), 0, 0, | |
2475 SLEEP_FUNC, NULL); | |
2476 if (new_pkt == NULL) { | |
2477 VHCI_DECR_PATH_CMDCOUNT(svp); | |
2478 freerbuf(bp); | |
2479 cmn_err(CE_WARN, "!vhci_do_prout: scsi_init_pkt failed"); | |
2480 return (0); | |
2481 } | |
2482 mutex_enter(&vlun->svl_mutex); | |
2483 bp->b_un.b_addr = (caddr_t)&vlun->svl_prout; | |
2484 bp->b_bcount = vlun->svl_bcount; | |
2485 bcopy(vlun->svl_cdb, new_pkt->pkt_cdbp, | |
2486 sizeof (vlun->svl_cdb)); | |
2487 new_pkt->pkt_time = vlun->svl_time; | |
2488 mutex_exit(&vlun->svl_mutex); | |
2489 new_pkt->pkt_flags = FLAG_NOINTR; | |
2490 | |
2491 ua_retry = nr_retry = retry = 0; | |
2492 again: | |
2493 rval = vhci_do_scsi_cmd(new_pkt); | |
2494 if (rval != 1) { | |
2495 if ((new_pkt->pkt_reason == CMD_CMPLT) && | |
2496 (SCBP_C(new_pkt) == STATUS_CHECK) && | |
2497 (new_pkt->pkt_state & STATE_ARQ_DONE)) { | |
2498 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
2499 (new_pkt->pkt_scbp))->sts_sensedata); | |
2500 if ((sns->es_key == KEY_UNIT_ATTENTION) || | |
2501 (sns->es_key == KEY_NOT_READY)) { | |
2502 int max_retry; | |
2503 struct scsi_failover_ops *fops; | |
2504 fops = vlun->svl_fops; | |
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|
2505 rval = fops->sfo_analyze_sense(svp->svp_psd, |
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|
2506 sns, vlun->svl_fops_ctpriv); |
4851 | 2507 if (rval == SCSI_SENSE_NOT_READY) { |
2508 max_retry = vhci_prout_not_ready_retry; | |
2509 retry = nr_retry++; | |
2510 delay(1*drv_usectohz(1000000)); | |
2511 } else { | |
2512 /* chk for state change and update */ | |
2513 if (rval == SCSI_SENSE_STATE_CHANGED) { | |
2514 int held; | |
2515 VHCI_HOLD_LUN(vlun, | |
2516 VH_NOSLEEP, held); | |
2517 if (!held) { | |
2518 rval = TRAN_BUSY; | |
2519 } else { | |
2520 /* chk for alua first */ | |
2521 vhci_update_pathstates( | |
2522 (void *)vlun); | |
2523 } | |
2524 } | |
2525 retry = ua_retry++; | |
2526 max_retry = VHCI_MAX_PGR_RETRIES; | |
2527 } | |
2528 if (retry < max_retry) { | |
2529 VHCI_DEBUG(4, (CE_WARN, NULL, | |
2530 "!vhci_do_prout retry 0x%x " | |
2531 "(0x%x 0x%x 0x%x)", | |
2532 SCBP_C(new_pkt), | |
2533 new_pkt->pkt_cdbp[0], | |
2534 new_pkt->pkt_cdbp[1], | |
2535 new_pkt->pkt_cdbp[2])); | |
2536 goto again; | |
2537 } | |
2538 rval = 0; | |
2539 VHCI_DEBUG(4, (CE_WARN, NULL, | |
2540 "!vhci_do_prout 0x%x " | |
2541 "(0x%x 0x%x 0x%x)", | |
2542 SCBP_C(new_pkt), | |
2543 new_pkt->pkt_cdbp[0], | |
2544 new_pkt->pkt_cdbp[1], | |
2545 new_pkt->pkt_cdbp[2])); | |
2546 } else if (sns->es_key == KEY_ILLEGAL_REQUEST) | |
2547 rval = VHCI_PGR_ILLEGALOP; | |
2548 } | |
2549 } else { | |
2550 rval = 1; | |
2551 } | |
2552 scsi_destroy_pkt(new_pkt); | |
2553 VHCI_DECR_PATH_CMDCOUNT(svp); | |
2554 freerbuf(bp); | |
2555 return (rval); | |
2556 } | |
2557 | |
2558 static void | |
2559 vhci_run_cmd(void *arg) | |
2560 { | |
2561 struct scsi_pkt *pkt = (struct scsi_pkt *)arg; | |
2562 struct scsi_pkt *tpkt; | |
2563 scsi_vhci_priv_t *svp; | |
2564 mdi_pathinfo_t *pip, *npip; | |
2565 scsi_vhci_lun_t *vlun; | |
2566 dev_info_t *cdip; | |
2567 scsi_vhci_priv_t *nsvp; | |
2568 int fail = 0; | |
2569 int rval; | |
2570 struct vhci_pkt *vpkt; | |
2571 uchar_t cdb_1; | |
2572 vhci_prout_t *prout; | |
2573 | |
2574 vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
2575 tpkt = vpkt->vpkt_tgt_pkt; | |
2576 pip = vpkt->vpkt_path; | |
2577 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
2578 if (svp == NULL) { | |
2579 tpkt->pkt_reason = CMD_TRAN_ERR; | |
2580 tpkt->pkt_statistics = STAT_ABORTED; | |
2581 goto done; | |
2582 } | |
2583 vlun = svp->svp_svl; | |
2584 prout = &vlun->svl_prout; | |
2585 if (SCBP_C(pkt) != STATUS_GOOD) | |
2586 fail++; | |
2587 cdip = vlun->svl_dip; | |
2588 pip = npip = NULL; | |
2589 rval = mdi_select_path(cdip, NULL, | |
2590 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, NULL, &npip); | |
2591 if ((rval != MDI_SUCCESS) || (npip == NULL)) { | |
2592 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
2593 "vhci_run_cmd: no path! 0x%p\n", (void *)svp)); | |
2594 tpkt->pkt_reason = CMD_TRAN_ERR; | |
2595 tpkt->pkt_statistics = STAT_ABORTED; | |
2596 goto done; | |
2597 } | |
2598 | |
2599 cdb_1 = vlun->svl_cdb[1]; | |
2600 vlun->svl_cdb[1] &= 0xe0; | |
2601 vlun->svl_cdb[1] |= VHCI_PROUT_R_AND_IGNORE; | |
2602 | |
2603 do { | |
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2604 nsvp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(npip); |
4851 | 2605 if (nsvp == NULL) { |
2606 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
2607 "vhci_run_cmd: no " | |
2608 "client priv! 0x%p offlined?\n", | |
2609 (void *)npip)); | |
2610 goto next_path; | |
2611 } | |
2612 if (vlun->svl_first_path == npip) { | |
2613 goto next_path; | |
2614 } else { | |
2615 if (vhci_do_prout(nsvp) != 1) | |
2616 fail++; | |
2617 } | |
2618 next_path: | |
2619 pip = npip; | |
2620 rval = mdi_select_path(cdip, NULL, | |
2621 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
2622 pip, &npip); | |
2623 mdi_rele_path(pip); | |
2624 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
2625 | |
2626 vlun->svl_cdb[1] = cdb_1; | |
2627 | |
2628 if (fail) { | |
2629 VHCI_DEBUG(4, (CE_WARN, NULL, "%s%d: key registration failed, " | |
2630 "couldn't be replicated on all paths", | |
2631 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
2632 vhci_print_prout_keys(vlun, "vhci_run_cmd: "); | |
2633 | |
2634 if (SCBP_C(pkt) != STATUS_GOOD) { | |
2635 tpkt->pkt_reason = CMD_TRAN_ERR; | |
2636 tpkt->pkt_statistics = STAT_ABORTED; | |
2637 } | |
2638 } else { | |
2639 vlun->svl_pgr_active = 1; | |
2640 vhci_print_prout_keys(vlun, "vhci_run_cmd: before bcopy:"); | |
2641 | |
2642 bcopy((const void *)prout->service_key, | |
2643 (void *)prout->active_service_key, MHIOC_RESV_KEY_SIZE); | |
2644 bcopy((const void *)prout->res_key, | |
2645 (void *)prout->active_res_key, MHIOC_RESV_KEY_SIZE); | |
2646 | |
2647 vhci_print_prout_keys(vlun, "vhci_run_cmd: after bcopy:"); | |
2648 } | |
2649 done: | |
2650 if (SCBP_C(pkt) == STATUS_GOOD) | |
2651 vlun->svl_first_path = NULL; | |
2652 | |
2653 if (svp) | |
2654 VHCI_DECR_PATH_CMDCOUNT(svp); | |
2655 | |
2656 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
2657 scsi_destroy_pkt(pkt); | |
2658 vpkt->vpkt_hba_pkt = NULL; | |
2659 if (vpkt->vpkt_path) { | |
2660 mdi_rele_path(vpkt->vpkt_path); | |
2661 vpkt->vpkt_path = NULL; | |
2662 } | |
2663 } | |
2664 | |
2665 sema_v(&vlun->svl_pgr_sema); | |
2666 /* | |
2667 * The PROUT commands are not included in the automatic retry | |
2668 * mechanism, therefore, vpkt_org_vpkt should never be set here. | |
2669 */ | |
2670 ASSERT(vpkt->vpkt_org_vpkt == NULL); | |
2671 if (tpkt->pkt_comp) | |
2672 (*tpkt->pkt_comp)(tpkt); | |
2673 | |
2674 } | |
2675 | |
2676 /* | |
2677 * Get the keys registered with this target. Since we will have | |
2678 * registered the same key with multiple initiators, strip out | |
2679 * any duplicate keys. | |
2680 * | |
2681 * The pointers which will be used to filter the registered keys from | |
2682 * the device will be stored in filter_prin and filter_pkt. If the | |
2683 * allocation length of the buffer was sufficient for the number of | |
2684 * parameter data bytes available to be returned by the device then the | |
2685 * key filtering will use the keylist returned from the original | |
2686 * request. If the allocation length of the buffer was not sufficient, | |
2687 * then the filtering will use the keylist returned from the request | |
2688 * that is resent below. | |
2689 * | |
2690 * If the device returns an additional length field that is greater than | |
2691 * the allocation length of the buffer, then allocate a new buffer which | |
2692 * can accommodate the number of parameter data bytes available to be | |
2693 * returned. Resend the scsi PRIN command, filter out the duplicate | |
2694 * keys and return as many of the unique keys found that was originally | |
2695 * requested and set the additional length field equal to the data bytes | |
2696 * of unique reservation keys available to be returned. | |
2697 * | |
2698 * If the device returns an additional length field that is less than or | |
2699 * equal to the allocation length of the buffer, then all the available | |
2700 * keys registered were returned by the device. Filter out the | |
2701 * duplicate keys and return all of the unique keys found and set the | |
2702 * additional length field equal to the data bytes of the reservation | |
2703 * keys to be returned. | |
2704 */ | |
2705 static int | |
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2706 vhci_do_prin(struct vhci_pkt *vpkt) |
4851 | 2707 { |
2708 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
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2709 mdi_pi_get_vhci_private(vpkt->vpkt_path); |
4851 | 2710 vhci_prin_readkeys_t *prin; |
2711 scsi_vhci_lun_t *vlun = svp->svp_svl; | |
2712 struct scsi_vhci *vhci = | |
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2713 ADDR2VHCI(&(vpkt->vpkt_tgt_pkt->pkt_address)); |
4851 | 2714 |
2715 struct buf *new_bp = NULL; | |
2716 struct scsi_pkt *new_pkt = NULL; | |
2717 struct vhci_pkt *new_vpkt = NULL; | |
2718 int hdr_len = 0; | |
2719 int rval = VHCI_CMD_CMPLT; | |
2720 uint32_t prin_length = 0; | |
2721 uint32_t svl_prin_length = 0; | |
2722 | |
2723 prin = (vhci_prin_readkeys_t *) | |
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2724 bp_mapin_common(vpkt->vpkt_tgt_init_bp, VM_NOSLEEP); |
4851 | 2725 |
2726 if (prin != NULL) { | |
2727 prin_length = BE_32(prin->length); | |
2728 } | |
2729 | |
2730 if (prin == NULL) { | |
2731 VHCI_DEBUG(5, (CE_WARN, NULL, | |
2732 "vhci_do_prin: bp_mapin_common failed.")); | |
2733 rval = VHCI_CMD_ERROR; | |
2734 } else { | |
2735 /* | |
2736 * According to SPC-3r22, sec 4.3.4.6: "If the amount of | |
2737 * information to be transferred exceeds the maximum value | |
2738 * that the ALLOCATION LENGTH field is capable of specifying, | |
2739 * the device server shall...terminate the command with CHECK | |
2740 * CONDITION status". The ALLOCATION LENGTH field of the | |
2741 * PERSISTENT RESERVE IN command is 2 bytes. We should never | |
2742 * get here with an ADDITIONAL LENGTH greater than 0xFFFF | |
2743 * so if we do, then it is an error! | |
2744 */ | |
2745 | |
2746 hdr_len = sizeof (prin->length) + sizeof (prin->generation); | |
2747 | |
2748 if ((prin_length + hdr_len) > 0xFFFF) { | |
2749 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
2750 "vhci_do_prin: Device returned invalid " | |
2751 "length 0x%x\n", prin_length)); | |
2752 rval = VHCI_CMD_ERROR; | |
2753 } | |
2754 } | |
2755 | |
2756 /* | |
2757 * If prin->length is greater than the byte count allocated in the | |
2758 * original buffer, then resend the request with enough buffer | |
2759 * allocated to get all of the available registered keys. | |
2760 */ | |
2761 if (rval != VHCI_CMD_ERROR) { | |
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2762 if ((vpkt->vpkt_tgt_init_bp->b_bcount - hdr_len) < |
4851 | 2763 prin_length) { |
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2764 if (vpkt->vpkt_org_vpkt == NULL) { |
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|
2765 new_pkt = vhci_create_retry_pkt(vpkt); |
4851 | 2766 if (new_pkt != NULL) { |
2767 new_vpkt = TGTPKT2VHCIPKT(new_pkt); | |
2768 | |
2769 /* | |
2770 * This is the buf with buffer pointer | |
2771 * where the prin readkeys will be | |
2772 * returned from the device | |
2773 */ | |
2774 new_bp = scsi_alloc_consistent_buf( | |
2775 &svp->svp_psd->sd_address, | |
2776 NULL, (prin_length + hdr_len), | |
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|
2777 (vpkt->vpkt_tgt_init_bp-> |
4851 | 2778 b_flags & (B_READ | B_WRITE)), |
2779 NULL_FUNC, NULL); | |
2780 if (new_bp != NULL) { | |
2781 if (new_bp->b_un.b_addr != | |
2782 NULL) { | |
2783 | |
2784 new_bp->b_bcount = | |
2785 prin_length + | |
2786 hdr_len; | |
2787 | |
2788 new_pkt->pkt_cdbp[7] = | |
2789 (uchar_t)(new_bp-> | |
2790 b_bcount >> 8); | |
2791 new_pkt->pkt_cdbp[8] = | |
2792 (uchar_t)new_bp-> | |
2793 b_bcount; | |
2794 | |
2795 rval = VHCI_CMD_RETRY; | |
2796 } else { | |
2797 rval = VHCI_CMD_ERROR; | |
2798 } | |
2799 } else { | |
2800 rval = VHCI_CMD_ERROR; | |
2801 } | |
2802 } else { | |
2803 rval = VHCI_CMD_ERROR; | |
2804 } | |
2805 } else { | |
2806 rval = VHCI_CMD_ERROR; | |
2807 } | |
2808 } | |
2809 } | |
2810 | |
2811 if (rval == VHCI_CMD_RETRY) { | |
2812 new_vpkt->vpkt_tgt_init_bp = new_bp; | |
2813 | |
2814 /* | |
2815 * Release the old path because it does not matter which path | |
2816 * this command is sent down. This allows the normal bind | |
2817 * transport mechanism to be used. | |
2818 */ | |
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2819 if (vpkt->vpkt_path != NULL) { |
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2820 mdi_rele_path(vpkt->vpkt_path); |
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2821 vpkt->vpkt_path = NULL; |
4851 | 2822 } |
2823 | |
2824 /* | |
2825 * Dispatch the retry command | |
2826 */ | |
2827 if (taskq_dispatch(vhci->vhci_taskq, vhci_dispatch_scsi_start, | |
2828 (void *) new_vpkt, KM_NOSLEEP) == NULL) { | |
2829 rval = VHCI_CMD_ERROR; | |
2830 } else { | |
2831 /* | |
2832 * If we return VHCI_CMD_RETRY, that means the caller | |
2833 * is going to bail and wait for the reissued command | |
2834 * to complete. In that case, we need to decrement | |
2835 * the path command count right now. In any other | |
2836 * case, it'll be decremented by the caller. | |
2837 */ | |
2838 VHCI_DECR_PATH_CMDCOUNT(svp); | |
2839 } | |
2840 } | |
2841 | |
2842 if ((rval != VHCI_CMD_ERROR) && (rval != VHCI_CMD_RETRY)) { | |
2843 int new, old; | |
2844 int data_len = 0; | |
2845 | |
2846 data_len = prin_length / MHIOC_RESV_KEY_SIZE; | |
2847 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_do_prin: %d keys read\n", | |
2848 data_len)); | |
2849 | |
2850 #ifdef DEBUG | |
2851 VHCI_DEBUG(5, (CE_NOTE, NULL, "vhci_do_prin: from storage\n")); | |
2852 if (vhci_debug == 5) | |
2853 vhci_print_prin_keys(prin, data_len); | |
2854 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
2855 "vhci_do_prin: MPxIO old keys:\n")); | |
2856 if (vhci_debug == 5) | |
2857 vhci_print_prin_keys(&vlun->svl_prin, data_len); | |
2858 #endif | |
2859 | |
2860 /* | |
2861 * Filter out all duplicate keys returned from the device | |
2862 * We know that we use a different key for every host, so we | |
2863 * can simply strip out duplicates. Otherwise we would need to | |
2864 * do more bookkeeping to figure out which keys to strip out. | |
2865 */ | |
2866 | |
2867 new = 0; | |
2868 | |
2869 if (data_len > 0) { | |
2870 vlun->svl_prin.keylist[0] = prin->keylist[0]; | |
2871 new++; | |
2872 } | |
2873 | |
2874 for (old = 1; old < data_len; old++) { | |
2875 int j; | |
2876 int match = 0; | |
2877 for (j = 0; j < new; j++) { | |
2878 if (bcmp(&prin->keylist[old], | |
2879 &vlun->svl_prin.keylist[j], | |
2880 sizeof (mhioc_resv_key_t)) == 0) { | |
2881 match = 1; | |
2882 break; | |
2883 } | |
2884 } | |
2885 if (!match) { | |
2886 vlun->svl_prin.keylist[new] = | |
2887 prin->keylist[old]; | |
2888 new++; | |
2889 } | |
2890 } | |
2891 | |
2892 vlun->svl_prin.generation = prin->generation; | |
2893 svl_prin_length = new * MHIOC_RESV_KEY_SIZE; | |
2894 vlun->svl_prin.length = BE_32(svl_prin_length); | |
2895 | |
2896 /* | |
2897 * If we arrived at this point after issuing a retry, make sure | |
2898 * that we put everything back the way it originally was so | |
2899 * that the target driver can complete the command correctly. | |
2900 */ | |
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2901 if (vpkt->vpkt_org_vpkt != NULL) { |
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2902 new_bp = vpkt->vpkt_tgt_init_bp; |
4851 | 2903 |
2904 scsi_free_consistent_buf(new_bp); | |
2905 | |
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2906 vpkt = vhci_sync_retry_pkt(vpkt); |
4851 | 2907 |
2908 /* | |
2909 * Make sure the original buffer is mapped into kernel | |
2910 * space before we try to copy the filtered keys into | |
2911 * it. | |
2912 */ | |
2913 prin = (vhci_prin_readkeys_t *)bp_mapin_common( | |
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2914 vpkt->vpkt_tgt_init_bp, VM_NOSLEEP); |
4851 | 2915 } |
2916 | |
2917 /* | |
2918 * Now copy the desired number of prin keys into the original | |
2919 * target buffer. | |
2920 */ | |
2921 if (svl_prin_length <= | |
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2922 (vpkt->vpkt_tgt_init_bp->b_bcount - hdr_len)) { |
4851 | 2923 /* |
2924 * It is safe to return all of the available unique | |
2925 * keys | |
2926 */ | |
2927 bcopy(&vlun->svl_prin, prin, svl_prin_length + hdr_len); | |
2928 } else { | |
2929 /* | |
2930 * Not all of the available keys were requested by the | |
2931 * original command. | |
2932 */ | |
2933 bcopy(&vlun->svl_prin, prin, | |
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2934 vpkt->vpkt_tgt_init_bp->b_bcount); |
4851 | 2935 } |
2936 #ifdef DEBUG | |
2937 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
2938 "vhci_do_prin: To Application:\n")); | |
2939 if (vhci_debug == 5) | |
2940 vhci_print_prin_keys(prin, new); | |
2941 VHCI_DEBUG(5, (CE_NOTE, NULL, | |
2942 "vhci_do_prin: MPxIO new keys:\n")); | |
2943 if (vhci_debug == 5) | |
2944 vhci_print_prin_keys(&vlun->svl_prin, new); | |
2945 #endif | |
2946 } | |
2947 | |
2948 if (rval == VHCI_CMD_ERROR) { | |
2949 /* | |
2950 * If we arrived at this point after issuing a | |
2951 * retry, make sure that we put everything back | |
2952 * the way it originally was so that ssd can | |
2953 * complete the command correctly. | |
2954 */ | |
2955 | |
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2956 if (vpkt->vpkt_org_vpkt != NULL) { |
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2957 new_bp = vpkt->vpkt_tgt_init_bp; |
4851 | 2958 if (new_bp != NULL) { |
2959 scsi_free_consistent_buf(new_bp); | |
2960 } | |
2961 | |
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2962 new_vpkt = vpkt; |
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2963 vpkt = vpkt->vpkt_org_vpkt; |
4851 | 2964 |
2965 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
2966 new_vpkt->vpkt_tgt_pkt); | |
2967 } | |
2968 | |
2969 /* | |
2970 * Mark this command completion as having an error so that | |
2971 * ssd will retry the command. | |
2972 */ | |
2973 | |
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2974 vpkt->vpkt_tgt_pkt->pkt_reason = CMD_ABORTED; |
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2975 vpkt->vpkt_tgt_pkt->pkt_statistics |= STAT_ABORTED; |
4851 | 2976 |
2977 rval = VHCI_CMD_CMPLT; | |
2978 } | |
2979 | |
2980 /* | |
2981 * Make sure that the semaphore is only released once. | |
2982 */ | |
2983 if (rval == VHCI_CMD_CMPLT) { | |
2984 sema_v(&vlun->svl_pgr_sema); | |
2985 } | |
2986 | |
2987 return (rval); | |
2988 } | |
2989 | |
2990 static void | |
2991 vhci_intr(struct scsi_pkt *pkt) | |
2992 { | |
2993 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
2994 struct scsi_pkt *tpkt; | |
2995 scsi_vhci_priv_t *svp; | |
2996 scsi_vhci_lun_t *vlun; | |
2997 int rval, held; | |
2998 struct scsi_failover_ops *fops; | |
2999 struct scsi_extended_sense *sns; | |
3000 mdi_pathinfo_t *lpath; | |
3001 static char *timeout_err = "Command Timeout"; | |
3002 static char *parity_err = "Parity Error"; | |
3003 char *err_str = NULL; | |
3004 dev_info_t *vdip, *cdip, *pdip; | |
3005 char *cpath, *dpath; | |
3006 | |
3007 ASSERT(vpkt != NULL); | |
3008 tpkt = vpkt->vpkt_tgt_pkt; | |
3009 ASSERT(tpkt != NULL); | |
3010 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
3011 ASSERT(svp != NULL); | |
3012 vlun = svp->svp_svl; | |
3013 ASSERT(vlun != NULL); | |
3014 lpath = vpkt->vpkt_path; | |
3015 | |
3016 /* | |
3017 * sync up the target driver's pkt with the pkt that | |
3018 * we actually used | |
3019 */ | |
3020 *(tpkt->pkt_scbp) = *(pkt->pkt_scbp); | |
3021 tpkt->pkt_resid = pkt->pkt_resid; | |
3022 tpkt->pkt_state = pkt->pkt_state; | |
3023 tpkt->pkt_statistics = pkt->pkt_statistics; | |
3024 tpkt->pkt_reason = pkt->pkt_reason; | |
3025 | |
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3026 /* Return path_instance information back to the target driver. */ |
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PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
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3027 if (scsi_pkt_allocated_correctly(tpkt)) { |
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|
3028 if (scsi_pkt_allocated_correctly(pkt)) { |
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|
3029 /* |
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|
3030 * If both packets were correctly allocated, |
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3031 * return path returned by pHCI. |
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|
3032 */ |
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|
3033 tpkt->pkt_path_instance = pkt->pkt_path_instance; |
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PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
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|
3034 } else { |
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|
3035 /* Otherwise return path of pHCI we used */ |
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|
3036 tpkt->pkt_path_instance = |
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3037 mdi_pi_get_path_instance(lpath); |
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|
3038 } |
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|
3039 } |
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|
3040 |
4851 | 3041 if (pkt->pkt_cdbp[0] == SCMD_PROUT && |
3042 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
3043 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE)) { | |
3044 if ((SCBP_C(pkt) != STATUS_GOOD) || | |
3045 (pkt->pkt_reason != CMD_CMPLT)) { | |
3046 sema_v(&vlun->svl_pgr_sema); | |
3047 } | |
3048 } else if (pkt->pkt_cdbp[0] == SCMD_PRIN) { | |
3049 if (pkt->pkt_reason != CMD_CMPLT || | |
3050 (SCBP_C(pkt) != STATUS_GOOD)) { | |
3051 sema_v(&vlun->svl_pgr_sema); | |
3052 } | |
3053 } | |
3054 | |
3055 switch (pkt->pkt_reason) { | |
3056 case CMD_CMPLT: | |
3057 /* | |
3058 * cmd completed successfully, check for scsi errors | |
3059 */ | |
3060 switch (*(pkt->pkt_scbp)) { | |
3061 case STATUS_CHECK: | |
3062 if (pkt->pkt_state & STATE_ARQ_DONE) { | |
3063 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
3064 (pkt->pkt_scbp))->sts_sensedata); | |
3065 fops = vlun->svl_fops; | |
3066 ASSERT(fops != NULL); | |
3067 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_intr: " | |
3068 "Received sns key %x esc %x escq %x\n", | |
3069 sns->es_key, sns->es_add_code, | |
3070 sns->es_qual_code)); | |
3071 | |
3072 if (vlun->svl_waiting_for_activepath == 1) { | |
3073 /* | |
3074 * if we are here it means we are | |
3075 * in the midst of a probe/attach | |
3076 * through a passive path; this | |
3077 * case is exempt from sense analysis | |
3078 * for detection of ext. failover | |
3079 * because that would unnecessarily | |
3080 * increase attach time. | |
3081 */ | |
3082 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
3083 vpkt->vpkt_tgt_init_scblen); | |
3084 break; | |
3085 } | |
3086 if (sns->es_add_code == VHCI_SCSI_PERR) { | |
3087 /* | |
3088 * parity error | |
3089 */ | |
3090 err_str = parity_err; | |
3091 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
3092 vpkt->vpkt_tgt_init_scblen); | |
3093 break; | |
3094 } | |
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3095 rval = fops->sfo_analyze_sense(svp->svp_psd, |
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3096 sns, vlun->svl_fops_ctpriv); |
4851 | 3097 if ((rval == SCSI_SENSE_NOFAILOVER) || |
3098 (rval == SCSI_SENSE_UNKNOWN) || | |
3099 (rval == SCSI_SENSE_NOT_READY)) { | |
3100 bcopy(pkt->pkt_scbp, tpkt->pkt_scbp, | |
3101 vpkt->vpkt_tgt_init_scblen); | |
3102 break; | |
3103 } else if (rval == SCSI_SENSE_STATE_CHANGED) { | |
3104 struct scsi_vhci *vhci; | |
3105 vhci = ADDR2VHCI(&tpkt->pkt_address); | |
3106 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
3107 if (!held) { | |
3108 /* | |
3109 * looks like some other thread | |
3110 * has already detected this | |
3111 * condition | |
3112 */ | |
3113 tpkt->pkt_state &= | |
3114 ~STATE_ARQ_DONE; | |
3115 *(tpkt->pkt_scbp) = | |
3116 STATUS_BUSY; | |
3117 break; | |
3118 } | |
3119 (void) taskq_dispatch( | |
3120 vhci->vhci_update_pathstates_taskq, | |
3121 vhci_update_pathstates, | |
3122 (void *)vlun, KM_SLEEP); | |
3123 } else { | |
3124 /* | |
3125 * externally initiated failover | |
3126 * has occurred or is in progress | |
3127 */ | |
3128 VHCI_HOLD_LUN(vlun, VH_NOSLEEP, held); | |
3129 if (!held) { | |
3130 /* | |
3131 * looks like some other thread | |
3132 * has already detected this | |
3133 * condition | |
3134 */ | |
3135 tpkt->pkt_state &= | |
3136 ~STATE_ARQ_DONE; | |
3137 *(tpkt->pkt_scbp) = | |
3138 STATUS_BUSY; | |
3139 break; | |
3140 } else { | |
3141 rval = vhci_handle_ext_fo | |
3142 (pkt, rval); | |
3143 if (rval == BUSY_RETURN) { | |
3144 tpkt->pkt_state &= | |
3145 ~STATE_ARQ_DONE; | |
3146 *(tpkt->pkt_scbp) = | |
3147 STATUS_BUSY; | |
3148 break; | |
3149 } | |
3150 bcopy(pkt->pkt_scbp, | |
3151 tpkt->pkt_scbp, | |
3152 vpkt->vpkt_tgt_init_scblen); | |
3153 break; | |
3154 } | |
3155 } | |
3156 } | |
3157 break; | |
3158 | |
3159 /* | |
3160 * If this is a good SCSI-II RELEASE cmd completion then restore | |
3161 * the load balancing policy and reset VLUN_RESERVE_ACTIVE_FLG. | |
3162 * If this is a good SCSI-II RESERVE cmd completion then set | |
3163 * VLUN_RESERVE_ACTIVE_FLG. | |
3164 */ | |
3165 case STATUS_GOOD: | |
3166 if ((pkt->pkt_cdbp[0] == SCMD_RELEASE) || | |
3167 (pkt->pkt_cdbp[0] == SCMD_RELEASE_G1)) { | |
3168 (void) mdi_set_lb_policy(vlun->svl_dip, | |
3169 vlun->svl_lb_policy_save); | |
3170 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
3171 VHCI_DEBUG(1, (CE_WARN, NULL, | |
3172 "!vhci_intr: vlun 0x%p release path 0x%p", | |
3173 (void *)vlun, (void *)vpkt->vpkt_path)); | |
3174 } | |
3175 | |
3176 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
3177 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
3178 vlun->svl_flags |= VLUN_RESERVE_ACTIVE_FLG; | |
3179 vlun->svl_resrv_pip = vpkt->vpkt_path; | |
3180 VHCI_DEBUG(1, (CE_WARN, NULL, | |
3181 "!vhci_intr: vlun 0x%p reserved path 0x%p", | |
3182 (void *)vlun, (void *)vpkt->vpkt_path)); | |
3183 } | |
3184 break; | |
3185 | |
3186 case STATUS_RESERVATION_CONFLICT: | |
3187 VHCI_DEBUG(1, (CE_WARN, NULL, | |
3188 "!vhci_intr: vlun 0x%p " | |
3189 "reserve conflict on path 0x%p", | |
3190 (void *)vlun, (void *)vpkt->vpkt_path)); | |
3191 /* FALLTHROUGH */ | |
3192 default: | |
3193 break; | |
3194 } | |
3195 | |
3196 /* | |
3197 * Update I/O completion statistics for the path | |
3198 */ | |
3199 mdi_pi_kstat_iosupdate(vpkt->vpkt_path, vpkt->vpkt_tgt_init_bp); | |
3200 | |
3201 /* | |
3202 * Command completed successfully, release the dma binding and | |
3203 * destroy the transport side of the packet. | |
3204 */ | |
3205 if ((pkt->pkt_cdbp[0] == SCMD_PROUT) && | |
3206 (((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_REGISTER) || | |
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|
3207 ((pkt->pkt_cdbp[1] & 0x1f) == VHCI_PROUT_R_AND_IGNORE))) { |
4851 | 3208 if (SCBP_C(pkt) == STATUS_GOOD) { |
3209 ASSERT(vlun->svl_taskq); | |
3210 svp->svp_last_pkt_reason = pkt->pkt_reason; | |
3211 (void) taskq_dispatch(vlun->svl_taskq, | |
3212 vhci_run_cmd, pkt, KM_SLEEP); | |
3213 return; | |
3214 } | |
3215 } | |
3216 if ((SCBP_C(pkt) == STATUS_GOOD) && | |
6941
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diff
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|
3217 (pkt->pkt_cdbp[0] == SCMD_PRIN) && vpkt->vpkt_tgt_init_bp) { |
4851 | 3218 /* |
3219 * If the action (value in byte 1 of the cdb) is zero, | |
3220 * we're reading keys, and that's the only condition | |
3221 * where we need to be concerned with filtering keys | |
3222 * and potential retries. Otherwise, we simply signal | |
3223 * the semaphore and move on. | |
3224 */ | |
3225 if (pkt->pkt_cdbp[1] == 0) { | |
3226 /* | |
3227 * If this is the completion of an internal | |
3228 * retry then we need to make sure that the | |
3229 * pkt and tpkt pointers are readjusted so | |
3230 * the calls to scsi_destroy_pkt and pkt_comp | |
3231 * below work * correctly. | |
3232 */ | |
3233 if (vpkt->vpkt_org_vpkt != NULL) { | |
3234 pkt = vpkt->vpkt_org_vpkt->vpkt_hba_pkt; | |
3235 tpkt = vpkt->vpkt_org_vpkt-> | |
3236 vpkt_tgt_pkt; | |
3237 | |
3238 /* | |
3239 * If this command was issued through | |
3240 * the taskq then we need to clear | |
3241 * this flag for proper processing in | |
3242 * the case of a retry from the target | |
3243 * driver. | |
3244 */ | |
3245 vpkt->vpkt_state &= | |
3246 ~VHCI_PKT_THRU_TASKQ; | |
3247 } | |
3248 | |
3249 /* | |
3250 * if vhci_do_prin returns VHCI_CMD_CMPLT then | |
3251 * vpkt will contain the address of the | |
3252 * original vpkt | |
3253 */ | |
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|
3254 if (vhci_do_prin(vpkt) == VHCI_CMD_RETRY) { |
4851 | 3255 /* |
3256 * The command has been resent to get | |
3257 * all the keys from the device. Don't | |
3258 * complete the command with ssd until | |
3259 * the retry completes. | |
3260 */ | |
3261 return; | |
3262 } | |
3263 } else { | |
3264 sema_v(&vlun->svl_pgr_sema); | |
3265 } | |
3266 } | |
3267 | |
3268 break; | |
3269 | |
3270 case CMD_TIMEOUT: | |
3271 if ((pkt->pkt_statistics & | |
3272 (STAT_BUS_RESET|STAT_DEV_RESET|STAT_ABORTED)) == 0) { | |
3273 | |
3274 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
3275 "!scsi vhci timeout invoked\n")); | |
3276 | |
3277 (void) vhci_recovery_reset(vlun, &pkt->pkt_address, | |
3278 FALSE, VHCI_DEPTH_ALL); | |
3279 } | |
3280 MDI_PI_ERRSTAT(lpath, MDI_PI_TRANSERR); | |
3281 tpkt->pkt_statistics |= STAT_ABORTED; | |
3282 err_str = timeout_err; | |
3283 break; | |
3284 | |
3285 case CMD_TRAN_ERR: | |
3286 /* | |
3287 * This status is returned if the transport has sent the cmd | |
3288 * down the link to the target and then some error occurs. | |
3289 * In case of SCSI-II RESERVE cmd, we don't know if the | |
3290 * reservation been accepted by the target or not, so we need | |
3291 * to clear the reservation. | |
3292 */ | |
3293 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
3294 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
3295 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_intr received" | |
3296 " cmd_tran_err for scsi-2 reserve cmd\n")); | |
3297 if (!vhci_recovery_reset(vlun, &pkt->pkt_address, | |
3298 TRUE, VHCI_DEPTH_TARGET)) { | |
3299 VHCI_DEBUG(1, (CE_WARN, NULL, | |
3300 "!vhci_intr cmd_tran_err reset failed!")); | |
3301 } | |
3302 } | |
3303 break; | |
3304 | |
3305 case CMD_DEV_GONE: | |
6941
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6777
diff
changeset
|
3306 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_intr received " |
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6777
diff
changeset
|
3307 "cmd_dev_gone\n")); |
4851 | 3308 tpkt->pkt_reason = CMD_CMPLT; |
3309 tpkt->pkt_state = STATE_GOT_BUS | | |
3310 STATE_GOT_TARGET | STATE_SENT_CMD | | |
3311 STATE_GOT_STATUS; | |
3312 *(tpkt->pkt_scbp) = STATUS_BUSY; | |
3313 break; | |
3314 | |
3315 default: | |
3316 break; | |
3317 } | |
3318 | |
3319 /* | |
3320 * SCSI-II RESERVE cmd has been serviced by the lower layers clear | |
3321 * the flag so the lun is not QUIESCED any longer. | |
3322 * Also clear the VHCI_PKT_THRU_TASKQ flag, to ensure that if this pkt | |
3323 * is retried, a taskq shall again be dispatched to service it. Else | |
3324 * it may lead to a system hang if the retry is within interrupt | |
3325 * context. | |
3326 */ | |
3327 if ((pkt->pkt_cdbp[0] == SCMD_RESERVE) || | |
3328 (pkt->pkt_cdbp[0] == SCMD_RESERVE_G1)) { | |
3329 vlun->svl_flags &= ~VLUN_QUIESCED_FLG; | |
3330 vpkt->vpkt_state &= ~VHCI_PKT_THRU_TASKQ; | |
3331 } | |
3332 | |
3333 /* | |
3334 * vpkt_org_vpkt should always be NULL here if the retry command | |
3335 * has been successfully processed. If vpkt_org_vpkt != NULL at | |
3336 * this point, it is an error so restore the original vpkt and | |
3337 * return an error to the target driver so it can retry the | |
3338 * command as appropriate. | |
3339 */ | |
3340 if (vpkt->vpkt_org_vpkt != NULL) { | |
3341 struct vhci_pkt *new_vpkt = vpkt; | |
3342 vpkt = vpkt->vpkt_org_vpkt; | |
3343 | |
3344 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
3345 new_vpkt->vpkt_tgt_pkt); | |
3346 | |
3347 /* | |
3348 * Mark this command completion as having an error so that | |
3349 * ssd will retry the command. | |
3350 */ | |
3351 vpkt->vpkt_tgt_pkt->pkt_reason = CMD_ABORTED; | |
3352 vpkt->vpkt_tgt_pkt->pkt_statistics |= STAT_ABORTED; | |
3353 | |
3354 pkt = vpkt->vpkt_hba_pkt; | |
3355 tpkt = vpkt->vpkt_tgt_pkt; | |
3356 } | |
3357 | |
3358 if ((err_str != NULL) && (pkt->pkt_reason != | |
3359 svp->svp_last_pkt_reason)) { | |
3360 cdip = vlun->svl_dip; | |
3361 pdip = mdi_pi_get_phci(vpkt->vpkt_path); | |
3362 vdip = ddi_get_parent(cdip); | |
3363 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3364 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3365 vhci_log(CE_WARN, vdip, "!%s (%s%d): %s on path %s (%s%d)", | |
3366 ddi_pathname(cdip, cpath), ddi_driver_name(cdip), | |
3367 ddi_get_instance(cdip), err_str, | |
3368 ddi_pathname(pdip, dpath), ddi_driver_name(pdip), | |
3369 ddi_get_instance(pdip)); | |
3370 kmem_free(cpath, MAXPATHLEN); | |
3371 kmem_free(dpath, MAXPATHLEN); | |
3372 } | |
3373 svp->svp_last_pkt_reason = pkt->pkt_reason; | |
3374 VHCI_DECR_PATH_CMDCOUNT(svp); | |
3375 | |
3376 /* | |
3377 * For PARTIAL_DMA, vhci should not free the path. | |
3378 * Target driver will call into vhci_scsi_dmafree or | |
3379 * destroy pkt to release this path. | |
3380 */ | |
3381 if ((vpkt->vpkt_flags & CFLAG_DMA_PARTIAL) == 0) { | |
3382 scsi_destroy_pkt(pkt); | |
3383 vpkt->vpkt_hba_pkt = NULL; | |
3384 if (vpkt->vpkt_path) { | |
3385 mdi_rele_path(vpkt->vpkt_path); | |
3386 vpkt->vpkt_path = NULL; | |
3387 } | |
3388 } | |
3389 | |
3390 if (tpkt->pkt_comp) { | |
3391 (*tpkt->pkt_comp)(tpkt); | |
3392 } | |
3393 } | |
3394 | |
3395 /* | |
3396 * two possibilities: (1) failover has completed | |
3397 * or (2) is in progress; update our path states for | |
3398 * the former case; for the latter case, | |
3399 * initiate a scsi_watch request to | |
3400 * determine when failover completes - vlun is HELD | |
3401 * until failover completes; BUSY is returned to upper | |
3402 * layer in both the cases | |
3403 */ | |
3404 static int | |
3405 vhci_handle_ext_fo(struct scsi_pkt *pkt, int fostat) | |
3406 { | |
3407 struct vhci_pkt *vpkt = (struct vhci_pkt *)pkt->pkt_private; | |
3408 struct scsi_pkt *tpkt; | |
3409 scsi_vhci_priv_t *svp; | |
3410 scsi_vhci_lun_t *vlun; | |
3411 struct scsi_vhci *vhci; | |
3412 scsi_vhci_swarg_t *swarg; | |
3413 char *path; | |
3414 | |
3415 ASSERT(vpkt != NULL); | |
3416 tpkt = vpkt->vpkt_tgt_pkt; | |
3417 ASSERT(tpkt != NULL); | |
3418 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
3419 ASSERT(svp != NULL); | |
3420 vlun = svp->svp_svl; | |
3421 ASSERT(vlun != NULL); | |
3422 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
3423 | |
3424 vhci = ADDR2VHCI(&tpkt->pkt_address); | |
3425 | |
3426 if (fostat == SCSI_SENSE_INACTIVE) { | |
3427 VHCI_DEBUG(1, (CE_NOTE, NULL, "!Failover " | |
3428 "detected for %s; updating path states...\n", | |
3429 vlun->svl_lun_wwn)); | |
3430 /* | |
3431 * set the vlun flag to indicate to the task that the target | |
3432 * port group needs updating | |
3433 */ | |
3434 vlun->svl_flags |= VLUN_UPDATE_TPG; | |
3435 (void) taskq_dispatch(vhci->vhci_update_pathstates_taskq, | |
3436 vhci_update_pathstates, (void *)vlun, KM_SLEEP); | |
3437 } else { | |
3438 path = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3439 vhci_log(CE_NOTE, ddi_get_parent(vlun->svl_dip), | |
3440 "!%s (%s%d): Waiting for externally initiated failover " | |
3441 "to complete", ddi_pathname(vlun->svl_dip, path), | |
3442 ddi_driver_name(vlun->svl_dip), | |
3443 ddi_get_instance(vlun->svl_dip)); | |
3444 kmem_free(path, MAXPATHLEN); | |
3445 swarg = kmem_alloc(sizeof (*swarg), KM_NOSLEEP); | |
3446 if (swarg == NULL) { | |
3447 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_handle_ext_fo: " | |
3448 "request packet allocation for %s failed....\n", | |
3449 vlun->svl_lun_wwn)); | |
3450 VHCI_RELEASE_LUN(vlun); | |
3451 return (PKT_RETURN); | |
3452 } | |
3453 swarg->svs_svp = svp; | |
3454 swarg->svs_tos = ddi_get_time(); | |
3455 swarg->svs_pi = vpkt->vpkt_path; | |
3456 swarg->svs_release_lun = 0; | |
3457 swarg->svs_done = 0; | |
3458 /* | |
3459 * place a hold on the path...we don't want it to | |
3460 * vanish while scsi_watch is in progress | |
3461 */ | |
3462 mdi_hold_path(vpkt->vpkt_path); | |
3463 svp->svp_sw_token = scsi_watch_request_submit(svp->svp_psd, | |
3464 VHCI_FOWATCH_INTERVAL, SENSE_LENGTH, vhci_efo_watch_cb, | |
3465 (caddr_t)swarg); | |
3466 } | |
3467 return (BUSY_RETURN); | |
3468 } | |
3469 | |
3470 /* | |
3471 * vhci_efo_watch_cb: | |
3472 * Callback from scsi_watch request to check the failover status. | |
3473 * Completion is either due to successful failover or timeout. | |
3474 * Upon successful completion, vhci_update_path_states is called. | |
3475 * For timeout condition, vhci_efo_done is called. | |
3476 * Always returns 0 to scsi_watch to keep retrying till vhci_efo_done | |
3477 * terminates this request properly in a separate thread. | |
3478 */ | |
3479 | |
3480 static int | |
3481 vhci_efo_watch_cb(caddr_t arg, struct scsi_watch_result *resultp) | |
3482 { | |
3483 struct scsi_status *statusp = resultp->statusp; | |
3484 struct scsi_extended_sense *sensep = resultp->sensep; | |
3485 struct scsi_pkt *pkt = resultp->pkt; | |
3486 scsi_vhci_swarg_t *swarg; | |
3487 scsi_vhci_priv_t *svp; | |
3488 scsi_vhci_lun_t *vlun; | |
3489 struct scsi_vhci *vhci; | |
3490 dev_info_t *vdip; | |
3491 int rval, updt_paths; | |
3492 | |
3493 swarg = (scsi_vhci_swarg_t *)(uintptr_t)arg; | |
3494 svp = swarg->svs_svp; | |
3495 if (swarg->svs_done) { | |
3496 /* | |
3497 * Already completed failover or timedout. | |
3498 * Waiting for vhci_efo_done to terminate this scsi_watch. | |
3499 */ | |
3500 return (0); | |
3501 } | |
3502 | |
3503 ASSERT(svp != NULL); | |
3504 vlun = svp->svp_svl; | |
3505 ASSERT(vlun != NULL); | |
3506 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
3507 vlun->svl_efo_update_path = 0; | |
3508 vdip = ddi_get_parent(vlun->svl_dip); | |
3509 vhci = ddi_get_soft_state(vhci_softstate, | |
3510 ddi_get_instance(vdip)); | |
3511 | |
3512 updt_paths = 0; | |
3513 | |
3514 if (pkt->pkt_reason != CMD_CMPLT) { | |
3515 if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) { | |
3516 swarg->svs_release_lun = 1; | |
3517 goto done; | |
3518 } | |
3519 return (0); | |
3520 } | |
3521 if (*((unsigned char *)statusp) == STATUS_CHECK) { | |
6941
c5d83acec1bc
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6777
diff
changeset
|
3522 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
|
3523 vlun->svl_fops_ctpriv); |
4851 | 3524 switch (rval) { |
3525 /* | |
3526 * Only update path states in case path is definitely | |
3527 * inactive, or no failover occurred. For all other | |
3528 * check conditions continue pinging. A unexpected | |
3529 * check condition shouldn't cause pinging to complete | |
3530 * prematurely. | |
3531 */ | |
3532 case SCSI_SENSE_INACTIVE: | |
3533 case SCSI_SENSE_NOFAILOVER: | |
3534 updt_paths = 1; | |
3535 break; | |
3536 default: | |
3537 if ((ddi_get_time() - swarg->svs_tos) | |
3538 >= VHCI_EXTFO_TIMEOUT) { | |
3539 swarg->svs_release_lun = 1; | |
3540 goto done; | |
3541 } | |
3542 return (0); | |
3543 } | |
3544 } else if (*((unsigned char *)statusp) == | |
3545 STATUS_RESERVATION_CONFLICT) { | |
3546 updt_paths = 1; | |
3547 } else if ((*((unsigned char *)statusp)) & | |
3548 (STATUS_BUSY | STATUS_QFULL)) { | |
3549 return (0); | |
3550 } | |
3551 if ((*((unsigned char *)statusp) == STATUS_GOOD) || | |
3552 (updt_paths == 1)) { | |
3553 /* | |
3554 * we got here because we had detected an | |
3555 * externally initiated failover; things | |
3556 * have settled down now, so let's | |
3557 * start up a task to update the | |
3558 * path states and target port group | |
3559 */ | |
3560 vlun->svl_efo_update_path = 1; | |
3561 swarg->svs_done = 1; | |
3562 vlun->svl_swarg = swarg; | |
3563 vlun->svl_flags |= VLUN_UPDATE_TPG; | |
3564 (void) taskq_dispatch(vhci->vhci_update_pathstates_taskq, | |
3565 vhci_update_pathstates, (void *)vlun, | |
3566 KM_SLEEP); | |
3567 return (0); | |
3568 } | |
3569 if ((ddi_get_time() - swarg->svs_tos) >= VHCI_EXTFO_TIMEOUT) { | |
3570 swarg->svs_release_lun = 1; | |
3571 goto done; | |
3572 } | |
3573 return (0); | |
3574 done: | |
3575 swarg->svs_done = 1; | |
3576 (void) taskq_dispatch(vhci->vhci_taskq, | |
3577 vhci_efo_done, (void *)swarg, KM_SLEEP); | |
3578 return (0); | |
3579 } | |
3580 | |
3581 /* | |
3582 * vhci_efo_done: | |
3583 * cleanly terminates scsi_watch and free up resources. | |
3584 * Called as taskq function in vhci_efo_watch_cb for EFO timeout condition | |
3585 * or by vhci_update_path_states invoked during external initiated | |
3586 * failover completion. | |
3587 */ | |
3588 static void | |
3589 vhci_efo_done(void *arg) | |
3590 { | |
3591 scsi_vhci_lun_t *vlun; | |
3592 scsi_vhci_swarg_t *swarg = (scsi_vhci_swarg_t *)arg; | |
3593 scsi_vhci_priv_t *svp = swarg->svs_svp; | |
3594 ASSERT(svp); | |
3595 | |
3596 vlun = svp->svp_svl; | |
3597 ASSERT(vlun); | |
3598 | |
3599 /* Wait for clean termination of scsi_watch */ | |
3600 (void) scsi_watch_request_terminate(svp->svp_sw_token, | |
7191
174d749b3f22
6520112 simultaneous DKIOCSTATE calls causes panic
tl223370
parents:
7121
diff
changeset
|
3601 SCSI_WATCH_TERMINATE_ALL_WAIT); |
4851 | 3602 svp->svp_sw_token = NULL; |
3603 | |
3604 /* release path and freeup resources to indicate failover completion */ | |
3605 mdi_rele_path(swarg->svs_pi); | |
3606 if (swarg->svs_release_lun) { | |
3607 VHCI_RELEASE_LUN(vlun); | |
3608 } | |
3609 kmem_free((void *)swarg, sizeof (*swarg)); | |
3610 } | |
3611 | |
3612 /* | |
3613 * Update the path states | |
3614 * vlun should be HELD when this is invoked. | |
3615 * Calls vhci_efo_done to cleanup resources allocated for EFO. | |
3616 */ | |
3617 void | |
3618 vhci_update_pathstates(void *arg) | |
3619 { | |
3620 mdi_pathinfo_t *pip, *npip; | |
3621 dev_info_t *dip, *pdip; | |
3622 struct scsi_failover_ops *fo; | |
3623 struct scsi_vhci_priv *svp; | |
3624 struct scsi_device *psd; | |
3625 struct scsi_path_opinfo opinfo; | |
3626 char *pclass, *tptr; | |
3627 struct scsi_vhci_lun *vlun = (struct scsi_vhci_lun *)arg; | |
3628 int sps; /* mdi_select_path() status */ | |
3629 char *cpath, *dpath; | |
3630 struct scsi_vhci *vhci; | |
3631 struct scsi_pkt *pkt; | |
3632 struct buf *bp; | |
3633 int reserve_conflict = 0; | |
3634 | |
3635 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
3636 dip = vlun->svl_dip; | |
3637 pip = npip = NULL; | |
3638 | |
3639 vhci = ddi_get_soft_state(vhci_softstate, | |
3640 ddi_get_instance(ddi_get_parent(dip))); | |
3641 | |
3642 sps = mdi_select_path(dip, NULL, (MDI_SELECT_ONLINE_PATH | | |
3643 MDI_SELECT_STANDBY_PATH), NULL, &npip); | |
3644 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
3645 goto done; | |
3646 } | |
3647 | |
3648 fo = vlun->svl_fops; | |
3649 do { | |
3650 pip = npip; | |
3651 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
3652 psd = svp->svp_psd; | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
3653 if (fo->sfo_path_get_opinfo(psd, &opinfo, |
4851 | 3654 vlun->svl_fops_ctpriv) != 0) { |
3655 sps = mdi_select_path(dip, NULL, | |
3656 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
3657 pip, &npip); | |
3658 mdi_rele_path(pip); | |
3659 continue; | |
3660 } | |
3661 | |
3662 if (mdi_prop_lookup_string(pip, "path-class", &pclass) != | |
3663 MDI_SUCCESS) { | |
3664 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
3665 "!vhci_update_pathstates: prop lookup failed for " | |
3666 "path 0x%p\n", (void *)pip)); | |
3667 sps = mdi_select_path(dip, NULL, | |
3668 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
3669 pip, &npip); | |
3670 mdi_rele_path(pip); | |
3671 continue; | |
3672 } | |
3673 | |
3674 /* | |
3675 * Need to update the "path-class" property | |
3676 * value in the device tree if different | |
3677 * from the existing value. | |
3678 */ | |
3679 if (strcmp(pclass, opinfo.opinfo_path_attr) != 0) { | |
3680 (void) mdi_prop_update_string(pip, "path-class", | |
3681 opinfo.opinfo_path_attr); | |
3682 } | |
3683 | |
3684 /* | |
3685 * Only change the state if needed. i.e. Don't call | |
3686 * mdi_pi_set_state to ONLINE a path if its already | |
3687 * ONLINE. Same for STANDBY paths. | |
3688 */ | |
3689 | |
3690 if ((opinfo.opinfo_path_state == SCSI_PATH_ACTIVE || | |
3691 opinfo.opinfo_path_state == SCSI_PATH_ACTIVE_NONOPT)) { | |
3692 if (!(MDI_PI_IS_ONLINE(pip))) { | |
3693 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
3694 "!vhci_update_pathstates: marking path" | |
3695 " 0x%p as ONLINE\n", (void *)pip)); | |
3696 pdip = mdi_pi_get_phci(pip); | |
3697 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3698 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3699 vhci_log(CE_NOTE, ddi_get_parent(dip), "!%s" | |
3700 " (%s%d): path %s (%s%d) target address %s" | |
3701 " is now ONLINE because of" | |
3702 " an externally initiated failover", | |
3703 ddi_pathname(dip, cpath), | |
3704 ddi_driver_name(dip), | |
3705 ddi_get_instance(dip), | |
3706 ddi_pathname(pdip, dpath), | |
3707 ddi_driver_name(pdip), | |
3708 ddi_get_instance(pdip), | |
3709 mdi_pi_get_addr(pip)); | |
3710 kmem_free(cpath, MAXPATHLEN); | |
3711 kmem_free(dpath, MAXPATHLEN); | |
3712 mdi_pi_set_state(pip, | |
3713 MDI_PATHINFO_STATE_ONLINE); | |
3714 mdi_pi_set_preferred(pip, | |
3715 opinfo.opinfo_preferred); | |
3716 tptr = kmem_alloc(strlen | |
3717 (opinfo.opinfo_path_attr)+1, KM_SLEEP); | |
3718 (void) strlcpy(tptr, opinfo.opinfo_path_attr, | |
3719 (strlen(opinfo.opinfo_path_attr)+1)); | |
3720 mutex_enter(&vlun->svl_mutex); | |
3721 if (vlun->svl_active_pclass != NULL) { | |
3722 kmem_free(vlun->svl_active_pclass, | |
3723 strlen(vlun->svl_active_pclass)+1); | |
3724 } | |
3725 vlun->svl_active_pclass = tptr; | |
3726 if (vlun->svl_waiting_for_activepath) { | |
3727 vlun->svl_waiting_for_activepath = 0; | |
3728 } | |
3729 mutex_exit(&vlun->svl_mutex); | |
3730 /* Check for Reservation Conflict */ | |
3731 bp = scsi_alloc_consistent_buf( | |
3732 &svp->svp_psd->sd_address, | |
3733 (struct buf *)NULL, DEV_BSIZE, B_READ, | |
3734 NULL, NULL); | |
3735 if (!bp) { | |
3736 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
3737 "vhci_update_pathstates: " | |
3738 "!No resources (buf)\n")); | |
3739 mdi_rele_path(pip); | |
3740 goto done; | |
3741 } | |
3742 pkt = scsi_init_pkt(&svp->svp_psd->sd_address, | |
3743 NULL, bp, CDB_GROUP1, | |
3744 sizeof (struct scsi_arq_status), 0, | |
3745 PKT_CONSISTENT, NULL, NULL); | |
3746 if (pkt) { | |
3747 (void) scsi_setup_cdb((union scsi_cdb *) | |
3748 (uintptr_t)pkt->pkt_cdbp, | |
3749 SCMD_READ, 1, 1, 0); | |
3750 pkt->pkt_time = 3*30; | |
3751 pkt->pkt_flags = FLAG_NOINTR; | |
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
3752 pkt->pkt_path_instance = |
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
3753 mdi_pi_get_path_instance(pip); |
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
3754 |
4851 | 3755 if ((scsi_transport(pkt) == |
3756 TRAN_ACCEPT) && (pkt->pkt_reason | |
3757 == CMD_CMPLT) && (SCBP_C(pkt) == | |
3758 STATUS_RESERVATION_CONFLICT)) { | |
3759 reserve_conflict = 1; | |
3760 } | |
3761 scsi_destroy_pkt(pkt); | |
3762 } | |
3763 scsi_free_consistent_buf(bp); | |
3764 } else if (MDI_PI_IS_ONLINE(pip)) { | |
3765 if (strcmp(pclass, opinfo.opinfo_path_attr) | |
3766 != 0) { | |
3767 mdi_pi_set_preferred(pip, | |
3768 opinfo.opinfo_preferred); | |
3769 mutex_enter(&vlun->svl_mutex); | |
3770 if (vlun->svl_active_pclass == NULL || | |
3771 strcmp(opinfo.opinfo_path_attr, | |
3772 vlun->svl_active_pclass) != 0) { | |
3773 mutex_exit(&vlun->svl_mutex); | |
3774 tptr = kmem_alloc(strlen | |
3775 (opinfo.opinfo_path_attr)+1, | |
3776 KM_SLEEP); | |
3777 (void) strlcpy(tptr, | |
3778 opinfo.opinfo_path_attr, | |
3779 (strlen | |
3780 (opinfo.opinfo_path_attr) | |
3781 +1)); | |
3782 mutex_enter(&vlun->svl_mutex); | |
3783 } else { | |
3784 /* | |
3785 * No need to update | |
3786 * svl_active_pclass | |
3787 */ | |
3788 tptr = NULL; | |
3789 mutex_exit(&vlun->svl_mutex); | |
3790 } | |
3791 if (tptr) { | |
3792 if (vlun->svl_active_pclass | |
3793 != NULL) { | |
3794 kmem_free(vlun-> | |
3795 svl_active_pclass, | |
3796 strlen(vlun-> | |
3797 svl_active_pclass) | |
3798 +1); | |
3799 } | |
3800 vlun->svl_active_pclass = tptr; | |
3801 mutex_exit(&vlun->svl_mutex); | |
3802 } | |
3803 } | |
3804 } | |
3805 } else if ((opinfo.opinfo_path_state == SCSI_PATH_INACTIVE) && | |
3806 !(MDI_PI_IS_STANDBY(pip))) { | |
3807 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
3808 "!vhci_update_pathstates: marking path" | |
3809 " 0x%p as STANDBY\n", (void *)pip)); | |
3810 pdip = mdi_pi_get_phci(pip); | |
3811 cpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3812 dpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); | |
3813 vhci_log(CE_NOTE, ddi_get_parent(dip), "!%s" | |
3814 " (%s%d): path %s (%s%d) target address %s" | |
3815 " is now STANDBY because of" | |
3816 " an externally initiated failover", | |
3817 ddi_pathname(dip, cpath), | |
3818 ddi_driver_name(dip), | |
3819 ddi_get_instance(dip), | |
3820 ddi_pathname(pdip, dpath), | |
3821 ddi_driver_name(pdip), | |
3822 ddi_get_instance(pdip), | |
3823 mdi_pi_get_addr(pip)); | |
3824 kmem_free(cpath, MAXPATHLEN); | |
3825 kmem_free(dpath, MAXPATHLEN); | |
3826 mdi_pi_set_state(pip, | |
3827 MDI_PATHINFO_STATE_STANDBY); | |
3828 mdi_pi_set_preferred(pip, | |
3829 opinfo.opinfo_preferred); | |
3830 mutex_enter(&vlun->svl_mutex); | |
3831 if (vlun->svl_active_pclass != NULL) { | |
3832 if (strcmp(vlun->svl_active_pclass, | |
3833 opinfo.opinfo_path_attr) == 0) { | |
3834 kmem_free(vlun-> | |
3835 svl_active_pclass, | |
3836 strlen(vlun-> | |
3837 svl_active_pclass)+1); | |
3838 vlun->svl_active_pclass = NULL; | |
3839 } | |
3840 } | |
3841 mutex_exit(&vlun->svl_mutex); | |
3842 } | |
3843 (void) mdi_prop_free(pclass); | |
3844 sps = mdi_select_path(dip, NULL, | |
3845 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
3846 pip, &npip); | |
3847 mdi_rele_path(pip); | |
3848 | |
3849 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
3850 | |
3851 /* | |
3852 * Check to see if this vlun has an active SCSI-II RESERVE. If so | |
3853 * clear the reservation by sending a reset, so the host doesn't | |
3854 * receive a reservation conflict. | |
3855 * Reset VLUN_RESERVE_ACTIVE_FLG for this vlun. Also notify ssd | |
3856 * of the reset, explicitly. | |
3857 */ | |
3858 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
3859 if (reserve_conflict && (vlun->svl_xlf_capable == 0)) { | |
3860 (void) vhci_recovery_reset(vlun, | |
3861 &svp->svp_psd->sd_address, FALSE, | |
3862 VHCI_DEPTH_TARGET); | |
3863 } | |
3864 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
3865 mutex_enter(&vhci->vhci_mutex); | |
3866 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
3867 &vhci->vhci_reset_notify_listf); | |
3868 mutex_exit(&vhci->vhci_mutex); | |
3869 } | |
3870 if (vlun->svl_flags & VLUN_UPDATE_TPG) { | |
3871 /* | |
3872 * Update the AccessState of related MP-API TPGs | |
3873 */ | |
3874 (void) vhci_mpapi_update_tpg_acc_state_for_lu(vhci, vlun); | |
3875 vlun->svl_flags &= ~VLUN_UPDATE_TPG; | |
3876 } | |
3877 done: | |
3878 if (vlun->svl_efo_update_path) { | |
3879 vlun->svl_efo_update_path = 0; | |
3880 vhci_efo_done(vlun->svl_swarg); | |
3881 vlun->svl_swarg = 0; | |
3882 } | |
3883 VHCI_RELEASE_LUN(vlun); | |
3884 } | |
3885 | |
3886 /* ARGSUSED */ | |
3887 static int | |
3888 vhci_pathinfo_init(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
3889 { | |
3890 scsi_hba_tran_t *hba = NULL; | |
3891 struct scsi_device *psd = NULL; | |
3892 scsi_vhci_lun_t *vlun = NULL; | |
3893 dev_info_t *pdip = NULL; | |
3894 dev_info_t *tgt_dip; | |
3895 struct scsi_vhci *vhci; | |
3896 char *guid; | |
3897 scsi_vhci_priv_t *svp = NULL; | |
3898 int rval = MDI_FAILURE; | |
3899 int vlun_alloced = 0; | |
3900 | |
3901 ASSERT(vdip != NULL); | |
3902 ASSERT(pip != NULL); | |
3903 | |
3904 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
3905 ASSERT(vhci != NULL); | |
3906 | |
3907 pdip = mdi_pi_get_phci(pip); | |
3908 ASSERT(pdip != NULL); | |
3909 | |
3910 hba = ddi_get_driver_private(pdip); | |
3911 ASSERT(hba != NULL); | |
3912 | |
3913 tgt_dip = mdi_pi_get_client(pip); | |
3914 ASSERT(tgt_dip != NULL); | |
3915 | |
3916 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, | |
3917 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
3918 VHCI_DEBUG(1, (CE_WARN, NULL, | |
3919 "vhci_pathinfo_init: lun guid property failed")); | |
3920 goto failure; | |
3921 } | |
3922 | |
3923 vlun = vhci_lun_lookup_alloc(tgt_dip, guid, &vlun_alloced); | |
3924 ddi_prop_free(guid); | |
3925 | |
3926 vlun->svl_dip = tgt_dip; | |
3927 | |
3928 svp = kmem_zalloc(sizeof (*svp), KM_SLEEP); | |
3929 svp->svp_svl = vlun; | |
3930 | |
3931 vlun->svl_lb_policy_save = mdi_get_lb_policy(tgt_dip); | |
3932 mutex_init(&svp->svp_mutex, NULL, MUTEX_DRIVER, NULL); | |
3933 cv_init(&svp->svp_cv, NULL, CV_DRIVER, NULL); | |
3934 | |
3935 psd = kmem_zalloc(sizeof (*psd), KM_SLEEP); | |
3936 mutex_init(&psd->sd_mutex, NULL, MUTEX_DRIVER, NULL); | |
3937 | |
3938 /* | |
3939 * Clone transport structure if requested, so | |
3940 * Self enumerating HBAs always need to use cloning | |
3941 */ | |
3942 | |
3943 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
3944 scsi_hba_tran_t *clone = | |
3945 kmem_alloc(sizeof (scsi_hba_tran_t), KM_SLEEP); | |
3946 bcopy(hba, clone, sizeof (scsi_hba_tran_t)); | |
3947 hba = clone; | |
3948 hba->tran_sd = psd; | |
3949 } else { | |
3950 ASSERT(hba->tran_sd == NULL); | |
3951 } | |
3952 psd->sd_dev = tgt_dip; | |
3953 psd->sd_address.a_hba_tran = hba; | |
3954 psd->sd_private = (caddr_t)pip; | |
3955 svp->svp_psd = psd; | |
3956 mdi_pi_set_vhci_private(pip, (caddr_t)svp); | |
3957 | |
3958 /* | |
3959 * call hba's target init entry point if it exists | |
3960 */ | |
3961 if (hba->tran_tgt_init != NULL) { | |
3962 if ((rval = (*hba->tran_tgt_init)(pdip, tgt_dip, | |
3963 hba, psd)) != DDI_SUCCESS) { | |
3964 VHCI_DEBUG(1, (CE_WARN, pdip, | |
3965 "!vhci_pathinfo_init: tran_tgt_init failed for " | |
3966 "path=0x%p rval=%x", (void *)pip, rval)); | |
3967 goto failure; | |
3968 } | |
3969 } | |
3970 | |
3971 svp->svp_new_path = 1; | |
3972 | |
3973 psd->sd_inq = NULL; | |
3974 | |
3975 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_pathinfo_init: path:%p\n", | |
3976 (void *)pip)); | |
3977 return (MDI_SUCCESS); | |
3978 | |
3979 failure: | |
3980 if (psd) { | |
3981 mutex_destroy(&psd->sd_mutex); | |
3982 kmem_free(psd, sizeof (*psd)); | |
3983 } | |
3984 if (svp) { | |
3985 mdi_pi_set_vhci_private(pip, NULL); | |
3986 mutex_destroy(&svp->svp_mutex); | |
3987 cv_destroy(&svp->svp_cv); | |
3988 kmem_free(svp, sizeof (*svp)); | |
3989 } | |
3990 if (hba && hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) | |
3991 kmem_free(hba, sizeof (scsi_hba_tran_t)); | |
3992 | |
3993 if (vlun_alloced) | |
3994 vhci_lun_free(tgt_dip); | |
3995 | |
3996 return (rval); | |
3997 } | |
3998 | |
3999 /* ARGSUSED */ | |
4000 static int | |
4001 vhci_pathinfo_uninit(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
4002 { | |
4003 scsi_hba_tran_t *hba = NULL; | |
4004 struct scsi_device *psd = NULL; | |
4005 dev_info_t *pdip = NULL; | |
4006 dev_info_t *cdip = NULL; | |
4007 scsi_vhci_priv_t *svp = NULL; | |
4008 | |
4009 ASSERT(vdip != NULL); | |
4010 ASSERT(pip != NULL); | |
4011 | |
4012 pdip = mdi_pi_get_phci(pip); | |
4013 ASSERT(pdip != NULL); | |
4014 | |
4015 cdip = mdi_pi_get_client(pip); | |
4016 ASSERT(cdip != NULL); | |
4017 | |
4018 hba = ddi_get_driver_private(pdip); | |
4019 ASSERT(hba != NULL); | |
4020 | |
4021 vhci_mpapi_set_path_state(vdip, pip, MP_DRVR_PATH_STATE_REMOVED); | |
4022 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
4023 if (svp == NULL) { | |
4024 /* path already freed. Nothing to do. */ | |
4025 return (MDI_SUCCESS); | |
4026 } | |
4027 | |
4028 psd = svp->svp_psd; | |
4029 ASSERT(psd != NULL); | |
4030 | |
4031 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
4032 hba = psd->sd_address.a_hba_tran; | |
4033 ASSERT(hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE); | |
4034 ASSERT(hba->tran_sd == psd); | |
4035 } else { | |
4036 ASSERT(hba->tran_sd == NULL); | |
4037 } | |
4038 | |
4039 if (hba->tran_tgt_free != NULL) { | |
4040 (*hba->tran_tgt_free) (pdip, cdip, hba, psd); | |
4041 } | |
4042 mutex_destroy(&psd->sd_mutex); | |
4043 if (hba->tran_hba_flags & SCSI_HBA_TRAN_CLONE) { | |
4044 kmem_free(hba, sizeof (*hba)); | |
4045 } | |
4046 | |
4047 mdi_pi_set_vhci_private(pip, NULL); | |
4048 kmem_free((caddr_t)psd, sizeof (*psd)); | |
4049 | |
4050 mutex_destroy(&svp->svp_mutex); | |
4051 cv_destroy(&svp->svp_cv); | |
4052 kmem_free((caddr_t)svp, sizeof (*svp)); | |
4053 | |
4054 /* | |
4055 * If this is the last path to the client, | |
4056 * then free up the vlun as well. | |
4057 */ | |
4058 if (mdi_client_get_path_count(cdip) == 1) { | |
4059 vhci_lun_free(cdip); | |
4060 } | |
4061 | |
4062 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_pathinfo_uninit: path=0x%p\n", | |
4063 (void *)pip)); | |
4064 return (MDI_SUCCESS); | |
4065 } | |
4066 | |
4067 /* ARGSUSED */ | |
4068 static int | |
4069 vhci_pathinfo_state_change(dev_info_t *vdip, mdi_pathinfo_t *pip, | |
4070 mdi_pathinfo_state_t state, uint32_t ext_state, int flags) | |
4071 { | |
4072 int rval = MDI_SUCCESS; | |
4073 scsi_vhci_priv_t *svp; | |
4074 scsi_vhci_lun_t *vlun; | |
4075 int held; | |
4076 int op = (flags & 0xf00) >> 8; | |
4077 struct scsi_vhci *vhci; | |
4078 | |
4079 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
4080 | |
4081 if (flags & MDI_EXT_STATE_CHANGE) { | |
4082 /* | |
4083 * We do not want to issue any commands down the path in case | |
4084 * sync flag is set. Lower layers might not be ready to accept | |
4085 * any I/O commands. | |
4086 */ | |
4087 if (op == DRIVER_DISABLE) | |
4088 return (MDI_SUCCESS); | |
4089 | |
4090 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
4091 if (svp == NULL) { | |
4092 return (MDI_FAILURE); | |
4093 } | |
4094 vlun = svp->svp_svl; | |
4095 | |
4096 if (flags & MDI_BEFORE_STATE_CHANGE) { | |
4097 /* | |
4098 * Hold the LUN. | |
4099 */ | |
4100 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
4101 if (flags & MDI_DISABLE_OP) { | |
4102 /* | |
4103 * Issue scsi reset if it happens to be | |
4104 * reserved path. | |
4105 */ | |
4106 if (vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
4107 /* | |
4108 * if reservation pending on | |
4109 * this path, dont' mark the | |
4110 * path busy | |
4111 */ | |
4112 if (op == DRIVER_DISABLE_TRANSIENT) { | |
4113 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
4114 "!vhci_pathinfo" | |
4115 "_state_change (pip:%p): " | |
4116 " reservation: fail busy\n", | |
4117 (void *)pip)); | |
4118 return (MDI_FAILURE); | |
4119 } | |
4120 if (pip == vlun->svl_resrv_pip) { | |
4121 if (vhci_recovery_reset( | |
4122 svp->svp_svl, | |
4123 &svp->svp_psd->sd_address, | |
4124 TRUE, | |
4125 VHCI_DEPTH_TARGET) == 0) { | |
4126 VHCI_DEBUG(1, | |
4127 (CE_NOTE, NULL, | |
4128 "!vhci_pathinfo" | |
4129 "_state_change " | |
4130 " (pip:%p): " | |
4131 "reset failed, " | |
4132 "give up!\n", | |
4133 (void *)pip)); | |
4134 } | |
4135 vlun->svl_flags &= | |
4136 ~VLUN_RESERVE_ACTIVE_FLG; | |
4137 } | |
4138 } | |
4139 } else if (flags & MDI_ENABLE_OP) { | |
4140 if (((vhci->vhci_conf_flags & | |
4141 VHCI_CONF_FLAGS_AUTO_FAILBACK) == | |
4142 VHCI_CONF_FLAGS_AUTO_FAILBACK) && | |
4143 MDI_PI_IS_USER_DISABLE(pip) && | |
4144 MDI_PI_IS_STANDBY(pip)) { | |
4145 struct scsi_failover_ops *fo; | |
4146 char *best_pclass, *pclass = NULL; | |
4147 int best_class, rv; | |
4148 /* | |
4149 * Failback if enabling a standby path | |
4150 * and it is the primary class or | |
4151 * preferred class | |
4152 */ | |
4153 best_class = mdi_pi_get_preferred(pip); | |
4154 if (best_class == 0) { | |
4155 /* | |
4156 * if not preferred - compare | |
4157 * path-class with class | |
4158 */ | |
4159 fo = vlun->svl_fops; | |
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changeset
|
4160 (void) fo->sfo_pathclass_next( |
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|
4161 NULL, &best_pclass, |
4851 | 4162 vlun->svl_fops_ctpriv); |
4163 pclass = NULL; | |
4164 rv = mdi_prop_lookup_string(pip, | |
4165 "path-class", &pclass); | |
4166 if (rv != MDI_SUCCESS || | |
4167 pclass == NULL) { | |
4168 vhci_log(CE_NOTE, vdip, | |
4169 "!path-class " | |
4170 " lookup " | |
4171 "failed. rv: %d" | |
4172 "class: %p", rv, | |
4173 (void *)pclass); | |
4174 } else if (strncmp(pclass, | |
4175 best_pclass, | |
4176 strlen(best_pclass)) == 0) { | |
4177 best_class = 1; | |
4178 } | |
4179 if (rv == MDI_SUCCESS && | |
4180 pclass != NULL) { | |
4181 rv = mdi_prop_free( | |
4182 pclass); | |
4183 if (rv != | |
4184 DDI_PROP_SUCCESS) { | |
4185 vhci_log( | |
4186 CE_NOTE, | |
4187 vdip, | |
4188 "!path-" | |
4189 "class" | |
4190 " free" | |
4191 " failed" | |
4192 " rv: %d" | |
4193 " class: " | |
4194 "%p", | |
4195 rv, | |
4196 (void *) | |
4197 pclass); | |
4198 } | |
4199 } | |
4200 } | |
4201 if (best_class == 1) { | |
4202 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
4203 "preferred path: %p " | |
4204 "USER_DISABLE->USER_ENABLE " | |
4205 "transition for lun %s\n", | |
4206 (void *)pip, | |
4207 vlun->svl_lun_wwn)); | |
4208 (void) taskq_dispatch( | |
4209 vhci->vhci_taskq, | |
4210 vhci_initiate_auto_failback, | |
4211 (void *) vlun, KM_SLEEP); | |
4212 } | |
4213 } | |
4214 /* | |
4215 * if PGR is active, revalidate key and | |
4216 * register on this path also, if key is | |
4217 * still valid | |
4218 */ | |
4219 sema_p(&vlun->svl_pgr_sema); | |
4220 if (vlun->svl_pgr_active) | |
4221 (void) | |
4222 vhci_pgr_validate_and_register(svp); | |
4223 sema_v(&vlun->svl_pgr_sema); | |
4224 /* | |
4225 * Inform target driver about any | |
4226 * reservations to be reinstated if target | |
4227 * has dropped reservation during the busy | |
4228 * period. | |
4229 */ | |
4230 mutex_enter(&vhci->vhci_mutex); | |
4231 scsi_hba_reset_notify_callback( | |
4232 &vhci->vhci_mutex, | |
4233 &vhci->vhci_reset_notify_listf); | |
4234 mutex_exit(&vhci->vhci_mutex); | |
4235 } | |
4236 } | |
4237 if (flags & MDI_AFTER_STATE_CHANGE) { | |
4238 if (flags & MDI_ENABLE_OP) { | |
4239 mutex_enter(&vhci_global_mutex); | |
4240 cv_broadcast(&vhci_cv); | |
4241 mutex_exit(&vhci_global_mutex); | |
4242 } | |
4243 if (vlun->svl_setcap_done) { | |
4244 (void) vhci_pHCI_cap(&svp->svp_psd->sd_address, | |
4245 "sector-size", vlun->svl_sector_size, | |
4246 1, pip); | |
4247 } | |
4248 | |
4249 /* | |
4250 * Release the LUN | |
4251 */ | |
4252 VHCI_RELEASE_LUN(vlun); | |
4253 | |
4254 /* | |
4255 * Path transition is complete. | |
4256 * Run callback to indicate target driver to | |
4257 * retry to prevent IO starvation. | |
4258 */ | |
4259 if (scsi_callback_id != 0) { | |
4260 ddi_run_callback(&scsi_callback_id); | |
4261 } | |
4262 } | |
4263 } else { | |
4264 switch (state) { | |
4265 case MDI_PATHINFO_STATE_ONLINE: | |
4266 rval = vhci_pathinfo_online(vdip, pip, flags); | |
4267 break; | |
4268 | |
4269 case MDI_PATHINFO_STATE_OFFLINE: | |
4270 rval = vhci_pathinfo_offline(vdip, pip, flags); | |
4271 break; | |
4272 | |
4273 default: | |
4274 break; | |
4275 } | |
4276 /* | |
4277 * Path transition is complete. | |
4278 * Run callback to indicate target driver to | |
4279 * retry to prevent IO starvation. | |
4280 */ | |
4281 if ((rval == MDI_SUCCESS) && (scsi_callback_id != 0)) { | |
4282 ddi_run_callback(&scsi_callback_id); | |
4283 } | |
4284 return (rval); | |
4285 } | |
4286 | |
4287 return (MDI_SUCCESS); | |
4288 } | |
4289 | |
4290 /* | |
4291 * Parse the mpxio load balancing options. The datanameptr | |
4292 * will point to a string containing the load-balance-options value. | |
4293 * The load-balance-options value will be a property that | |
4294 * defines the load-balance algorithm and any arguments to that | |
4295 * algorithm. | |
4296 * For example: | |
4297 * device-type-mpxio-options-list= | |
4298 * "device-type=SUN SENA", "load-balance-options=logical-block-options" | |
4299 * "device-type=SUN SE6920", "round-robin-options"; | |
4300 * logical-block-options="load-balance=logical-block", "region-size=15"; | |
4301 * round-robin-options="load-balance=round-robin"; | |
4302 * | |
4303 * If the load-balance is not defined the load balance algorithm will | |
4304 * default to the global setting. There will be default values assigned | |
4305 * to the arguments (region-size=18) and if an argument is one | |
4306 * that is not known, it will be ignored. | |
4307 */ | |
4308 static void | |
4309 vhci_parse_mpxio_lb_options(dev_info_t *dip, dev_info_t *cdip, | |
4310 caddr_t datanameptr) | |
4311 { | |
4312 char *dataptr, *next_entry; | |
4313 caddr_t config_list = NULL; | |
4314 int config_list_len = 0, list_len = 0; | |
4315 int region_size = -1; | |
4316 client_lb_t load_balance; | |
4317 | |
4318 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, datanameptr, | |
4319 (caddr_t)&config_list, &config_list_len) != DDI_PROP_SUCCESS) { | |
4320 return; | |
4321 } | |
4322 | |
4323 list_len = config_list_len; | |
4324 next_entry = config_list; | |
4325 while (config_list_len > 0) { | |
4326 dataptr = next_entry; | |
4327 | |
4328 if (strncmp(mdi_load_balance, dataptr, | |
4329 strlen(mdi_load_balance)) == 0) { | |
4330 /* get the load-balance scheme */ | |
4331 dataptr += strlen(mdi_load_balance) + 1; | |
4332 if (strcmp(dataptr, LOAD_BALANCE_PROP_RR) == 0) { | |
4333 (void) mdi_set_lb_policy(cdip, LOAD_BALANCE_RR); | |
4334 load_balance = LOAD_BALANCE_RR; | |
4335 } else if (strcmp(dataptr, | |
4336 LOAD_BALANCE_PROP_LBA) == 0) { | |
4337 (void) mdi_set_lb_policy(cdip, | |
4338 LOAD_BALANCE_LBA); | |
4339 load_balance = LOAD_BALANCE_LBA; | |
4340 } else if (strcmp(dataptr, | |
4341 LOAD_BALANCE_PROP_NONE) == 0) { | |
4342 (void) mdi_set_lb_policy(cdip, | |
4343 LOAD_BALANCE_NONE); | |
4344 load_balance = LOAD_BALANCE_NONE; | |
4345 } | |
4346 } else if (strncmp(dataptr, LOGICAL_BLOCK_REGION_SIZE, | |
4347 strlen(LOGICAL_BLOCK_REGION_SIZE)) == 0) { | |
4348 int i = 0; | |
4349 char *ptr; | |
4350 char *tmp; | |
4351 | |
4352 tmp = dataptr + (strlen(LOGICAL_BLOCK_REGION_SIZE) + 1); | |
4353 /* check for numeric value */ | |
4354 for (ptr = tmp; i < strlen(tmp); i++, ptr++) { | |
4355 if (!isdigit(*ptr)) { | |
4356 cmn_err(CE_WARN, | |
4357 "Illegal region size: %s." | |
4358 " Setting to default value: %d", | |
4359 tmp, | |
4360 LOAD_BALANCE_DEFAULT_REGION_SIZE); | |
4361 region_size = | |
4362 LOAD_BALANCE_DEFAULT_REGION_SIZE; | |
4363 break; | |
4364 } | |
4365 } | |
4366 if (i >= strlen(tmp)) { | |
4367 region_size = stoi(&tmp); | |
4368 } | |
4369 (void) mdi_set_lb_region_size(cdip, region_size); | |
4370 } | |
4371 config_list_len -= (strlen(next_entry) + 1); | |
4372 next_entry += strlen(next_entry) + 1; | |
4373 } | |
4374 #ifdef DEBUG | |
4375 if ((region_size >= 0) && (load_balance != LOAD_BALANCE_LBA)) { | |
4376 VHCI_DEBUG(1, (CE_NOTE, dip, | |
4377 "!vhci_parse_mpxio_lb_options: region-size: %d" | |
4378 "only valid for load-balance=logical-block\n", | |
4379 region_size)); | |
4380 } | |
4381 #endif | |
4382 if ((region_size == -1) && (load_balance == LOAD_BALANCE_LBA)) { | |
4383 VHCI_DEBUG(1, (CE_NOTE, dip, | |
4384 "!vhci_parse_mpxio_lb_options: No region-size" | |
4385 " defined load-balance=logical-block." | |
4386 " Default to: %d\n", LOAD_BALANCE_DEFAULT_REGION_SIZE)); | |
4387 (void) mdi_set_lb_region_size(cdip, | |
4388 LOAD_BALANCE_DEFAULT_REGION_SIZE); | |
4389 } | |
4390 if (list_len > 0) { | |
4391 kmem_free(config_list, list_len); | |
4392 } | |
4393 } | |
4394 | |
4395 /* | |
4396 * Parse the device-type-mpxio-options-list looking for the key of | |
4397 * "load-balance-options". If found, parse the load balancing options. | |
4398 * Check the comment of the vhci_get_device_type_mpxio_options() | |
4399 * for the device-type-mpxio-options-list. | |
4400 */ | |
4401 static void | |
4402 vhci_parse_mpxio_options(dev_info_t *dip, dev_info_t *cdip, | |
4403 caddr_t datanameptr, int list_len) | |
4404 { | |
4405 char *dataptr; | |
4406 int len; | |
4407 | |
4408 /* | |
4409 * get the data list | |
4410 */ | |
4411 dataptr = datanameptr; | |
4412 len = 0; | |
4413 while (len < list_len && | |
4414 strncmp(dataptr, DEVICE_TYPE_STR, strlen(DEVICE_TYPE_STR)) | |
4415 != 0) { | |
4416 if (strncmp(dataptr, LOAD_BALANCE_OPTIONS, | |
4417 strlen(LOAD_BALANCE_OPTIONS)) == 0) { | |
4418 len += strlen(LOAD_BALANCE_OPTIONS) + 1; | |
4419 dataptr += strlen(LOAD_BALANCE_OPTIONS) + 1; | |
4420 vhci_parse_mpxio_lb_options(dip, cdip, dataptr); | |
4421 } | |
4422 len += strlen(dataptr) + 1; | |
4423 dataptr += strlen(dataptr) + 1; | |
4424 } | |
4425 } | |
4426 | |
4427 /* | |
4428 * Check the inquriy string returned from the device wiith the device-type | |
4429 * Check for the existence of the device-type-mpxio-options-list and | |
4430 * if found parse the list checking for a match with the device-type | |
4431 * value and the inquiry string returned from the device. If a match | |
4432 * is found, parse the mpxio options list. The format of the | |
4433 * device-type-mpxio-options-list is: | |
4434 * device-type-mpxio-options-list= | |
4435 * "device-type=SUN SENA", "load-balance-options=logical-block-options" | |
4436 * "device-type=SUN SE6920", "round-robin-options"; | |
4437 * logical-block-options="load-balance=logical-block", "region-size=15"; | |
4438 * round-robin-options="load-balance=round-robin"; | |
4439 */ | |
4440 void | |
4441 vhci_get_device_type_mpxio_options(dev_info_t *dip, dev_info_t *cdip, | |
4442 struct scsi_device *devp) | |
4443 { | |
4444 | |
4445 caddr_t config_list = NULL; | |
4446 caddr_t vidptr, datanameptr; | |
4447 int vidlen, dupletlen = 0; | |
4448 int config_list_len = 0, len; | |
4449 struct scsi_inquiry *inq = devp->sd_inq; | |
4450 | |
4451 /* | |
4452 * look up the device-type-mpxio-options-list and walk thru | |
4453 * the list compare the vendor ids of the earlier inquiry command and | |
4454 * with those vids in the list if there is a match, lookup | |
4455 * the mpxio-options value | |
4456 */ | |
4457 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, | |
4458 MPXIO_OPTIONS_LIST, | |
4459 (caddr_t)&config_list, &config_list_len) == DDI_PROP_SUCCESS) { | |
4460 | |
4461 /* | |
4462 * Compare vids in each duplet - if it matches, | |
4463 * parse the mpxio options list. | |
4464 */ | |
4465 for (len = config_list_len, vidptr = config_list; len > 0; | |
4466 len -= dupletlen) { | |
4467 | |
4468 dupletlen = 0; | |
4469 | |
4470 if (strlen(vidptr) != 0 && | |
4471 strncmp(vidptr, DEVICE_TYPE_STR, | |
4472 strlen(DEVICE_TYPE_STR)) == 0) { | |
4473 /* point to next duplet */ | |
4474 datanameptr = vidptr + strlen(vidptr) + 1; | |
4475 /* add len of this duplet */ | |
4476 dupletlen += strlen(vidptr) + 1; | |
4477 /* get to device type */ | |
4478 vidptr += strlen(DEVICE_TYPE_STR) + 1; | |
4479 vidlen = strlen(vidptr); | |
4480 if ((vidlen != 0) && | |
4481 bcmp(inq->inq_vid, vidptr, vidlen) == 0) { | |
4482 vhci_parse_mpxio_options(dip, cdip, | |
4483 datanameptr, len - dupletlen); | |
4484 break; | |
4485 } | |
4486 /* get to next duplet */ | |
4487 vidptr += strlen(vidptr) + 1; | |
4488 } | |
4489 /* get to the next device-type */ | |
4490 while (len - dupletlen > 0 && | |
4491 strlen(vidptr) != 0 && | |
4492 strncmp(vidptr, DEVICE_TYPE_STR, | |
4493 strlen(DEVICE_TYPE_STR)) != 0) { | |
4494 dupletlen += strlen(vidptr) + 1; | |
4495 vidptr += strlen(vidptr) + 1; | |
4496 } | |
4497 } | |
4498 if (config_list_len > 0) { | |
4499 kmem_free(config_list, config_list_len); | |
4500 } | |
4501 } | |
4502 } | |
4503 | |
4504 static int | |
4505 vhci_update_pathinfo(struct scsi_device *psd, mdi_pathinfo_t *pip, | |
4506 struct scsi_failover_ops *fo, | |
4507 scsi_vhci_lun_t *vlun, | |
4508 struct scsi_vhci *vhci) | |
4509 { | |
4510 struct scsi_path_opinfo opinfo; | |
4511 char *pclass, *best_pclass; | |
4512 | |
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|
4513 if (fo->sfo_path_get_opinfo(psd, &opinfo, vlun->svl_fops_ctpriv) != 0) { |
4851 | 4514 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_update_pathinfo: " |
4515 "Failed to get operation info for path:%p\n", (void *)pip)); | |
4516 return (MDI_FAILURE); | |
4517 } | |
4518 /* set the xlf capable flag in the vlun for future use */ | |
4519 vlun->svl_xlf_capable = opinfo.opinfo_xlf_capable; | |
4520 (void) mdi_prop_update_string(pip, "path-class", | |
4521 opinfo.opinfo_path_attr); | |
4522 | |
4523 pclass = opinfo.opinfo_path_attr; | |
4524 if (opinfo.opinfo_path_state == SCSI_PATH_ACTIVE) { | |
4525 mutex_enter(&vlun->svl_mutex); | |
4526 if (vlun->svl_active_pclass != NULL) { | |
4527 if (strcmp(vlun->svl_active_pclass, pclass) != 0) { | |
4528 mutex_exit(&vlun->svl_mutex); | |
4529 /* | |
4530 * Externally initiated failover has happened; | |
4531 * force the path state to be STANDBY/ONLINE, | |
4532 * next IO will trigger failover and thus | |
4533 * sync-up the pathstates. Reason we don't | |
4534 * sync-up immediately by invoking | |
4535 * vhci_update_pathstates() is because it | |
4536 * needs a VHCI_HOLD_LUN() and we don't | |
4537 * want to block here. | |
4538 * | |
4539 * Further, if the device is an ALUA device, | |
4540 * then failure to exactly match 'pclass' and | |
4541 * 'svl_active_pclass'(as is the case here) | |
4542 * indicates that the currently active path | |
4543 * is a 'non-optimized' path - which means | |
4544 * that 'svl_active_pclass' needs to be | |
4545 * replaced with opinfo.opinfo_path_state | |
4546 * value. | |
4547 */ | |
4548 | |
4549 if (SCSI_FAILOVER_IS_TPGS(vlun->svl_fops)) { | |
4550 char *tptr; | |
4551 | |
4552 /* | |
4553 * The device is ALUA compliant. The | |
4554 * state need to be changed to online | |
4555 * rather than standby state which is | |
4556 * done typically for a asymmetric | |
4557 * device that is non ALUA compliant. | |
4558 */ | |
4559 mdi_pi_set_state(pip, | |
4560 MDI_PATHINFO_STATE_ONLINE); | |
4561 tptr = kmem_alloc(strlen | |
4562 (opinfo.opinfo_path_attr)+1, | |
4563 KM_SLEEP); | |
4564 (void) strlcpy(tptr, | |
4565 opinfo.opinfo_path_attr, | |
4566 (strlen(opinfo.opinfo_path_attr) | |
4567 +1)); | |
4568 mutex_enter(&vlun->svl_mutex); | |
4569 kmem_free(vlun->svl_active_pclass, | |
4570 strlen(vlun->svl_active_pclass)+1); | |
4571 vlun->svl_active_pclass = tptr; | |
4572 mutex_exit(&vlun->svl_mutex); | |
4573 } else { | |
4574 /* | |
4575 * Non ALUA device case. | |
4576 */ | |
4577 mdi_pi_set_state(pip, | |
4578 MDI_PATHINFO_STATE_STANDBY); | |
4579 } | |
4580 vlun->svl_fo_support = opinfo.opinfo_mode; | |
4581 mdi_pi_set_preferred(pip, | |
4582 opinfo.opinfo_preferred); | |
4583 return (MDI_SUCCESS); | |
4584 } | |
4585 } else { | |
4586 char *tptr; | |
4587 | |
4588 /* | |
4589 * lets release the mutex before we try to | |
4590 * allocate since the potential to sleep is | |
4591 * possible. | |
4592 */ | |
4593 mutex_exit(&vlun->svl_mutex); | |
4594 tptr = kmem_alloc(strlen(pclass)+1, KM_SLEEP); | |
4595 (void) strlcpy(tptr, pclass, (strlen(pclass)+1)); | |
4596 mutex_enter(&vlun->svl_mutex); | |
4597 vlun->svl_active_pclass = tptr; | |
4598 } | |
4599 mutex_exit(&vlun->svl_mutex); | |
4600 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_ONLINE); | |
4601 vlun->svl_waiting_for_activepath = 0; | |
4602 } else if (opinfo.opinfo_path_state == SCSI_PATH_ACTIVE_NONOPT) { | |
4603 mutex_enter(&vlun->svl_mutex); | |
4604 if (vlun->svl_active_pclass == NULL) { | |
4605 char *tptr; | |
4606 | |
4607 mutex_exit(&vlun->svl_mutex); | |
4608 tptr = kmem_alloc(strlen(pclass)+1, KM_SLEEP); | |
4609 (void) strlcpy(tptr, pclass, (strlen(pclass)+1)); | |
4610 mutex_enter(&vlun->svl_mutex); | |
4611 vlun->svl_active_pclass = tptr; | |
4612 } | |
4613 mutex_exit(&vlun->svl_mutex); | |
4614 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_ONLINE); | |
4615 vlun->svl_waiting_for_activepath = 0; | |
4616 } else if (opinfo.opinfo_path_state == SCSI_PATH_INACTIVE) { | |
4617 mutex_enter(&vlun->svl_mutex); | |
4618 if (vlun->svl_active_pclass != NULL) { | |
4619 if (strcmp(vlun->svl_active_pclass, pclass) == 0) { | |
4620 mutex_exit(&vlun->svl_mutex); | |
4621 /* | |
4622 * externally initiated failover has happened; | |
4623 * force state to ONLINE (see comment above) | |
4624 */ | |
4625 mdi_pi_set_state(pip, | |
4626 MDI_PATHINFO_STATE_ONLINE); | |
4627 vlun->svl_fo_support = opinfo.opinfo_mode; | |
4628 mdi_pi_set_preferred(pip, | |
4629 opinfo.opinfo_preferred); | |
4630 return (MDI_SUCCESS); | |
4631 } | |
4632 } | |
4633 mutex_exit(&vlun->svl_mutex); | |
4634 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_STANDBY); | |
4635 | |
4636 /* | |
4637 * Initiate auto-failback, if enabled, for path if path-state | |
4638 * is transitioning from OFFLINE->STANDBY and pathclass is the | |
4639 * prefered pathclass for this storage. | |
4640 * NOTE: In case where opinfo_path_state is SCSI_PATH_ACTIVE | |
4641 * (above), where the pi state is set to STANDBY, we don't | |
4642 * initiate auto-failback as the next IO shall take care of. | |
4643 * this. See comment above. | |
4644 */ | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4645 (void) fo->sfo_pathclass_next(NULL, &best_pclass, |
4851 | 4646 vlun->svl_fops_ctpriv); |
4647 if (((vhci->vhci_conf_flags & VHCI_CONF_FLAGS_AUTO_FAILBACK) == | |
4648 VHCI_CONF_FLAGS_AUTO_FAILBACK) && | |
4649 ((strcmp(pclass, best_pclass) == 0) || | |
4650 mdi_pi_get_preferred(pip) == 1) && | |
4651 ((MDI_PI_OLD_STATE(pip) == MDI_PATHINFO_STATE_OFFLINE)|| | |
4652 (MDI_PI_OLD_STATE(pip) == MDI_PATHINFO_STATE_INIT))) { | |
4653 VHCI_DEBUG(1, (CE_NOTE, NULL, "%s pathclass path: %p" | |
4654 " OFFLINE->STANDBY transition for lun %s\n", | |
4655 best_pclass, (void *)pip, vlun->svl_lun_wwn)); | |
4656 (void) taskq_dispatch(vhci->vhci_taskq, | |
4657 vhci_initiate_auto_failback, (void *) vlun, | |
4658 KM_SLEEP); | |
4659 } | |
4660 } | |
4661 vlun->svl_fo_support = opinfo.opinfo_mode; | |
4662 mdi_pi_set_preferred(pip, opinfo.opinfo_preferred); | |
4663 | |
4664 VHCI_DEBUG(8, (CE_NOTE, NULL, "vhci_update_pathinfo: opinfo_rev = %x," | |
4665 " opinfo_path_state = %x opinfo_preferred = %x, opinfo_mode = %x\n", | |
4666 opinfo.opinfo_rev, opinfo.opinfo_path_state, | |
4667 opinfo.opinfo_preferred, opinfo.opinfo_mode)); | |
4668 | |
4669 return (MDI_SUCCESS); | |
4670 } | |
4671 | |
4672 /* | |
4673 * Form the kstat name and and call mdi_pi_kstat_create() | |
4674 */ | |
4675 void | |
4676 vhci_kstat_create_pathinfo(mdi_pathinfo_t *pip) | |
4677 { | |
4678 dev_info_t *tgt_dip; | |
4679 dev_info_t *pdip; | |
4680 char *guid; | |
4681 char *target_port, *target_port_dup; | |
4682 char ks_name[KSTAT_STRLEN]; | |
4683 uint_t pid; | |
4684 int by_id; | |
4685 mod_hash_val_t hv; | |
4686 | |
4687 | |
4688 /* return if we have already allocated kstats */ | |
4689 if (mdi_pi_kstat_exists(pip)) | |
4690 return; | |
4691 | |
4692 /* | |
4693 * We need instance numbers to create a kstat name, return if we don't | |
4694 * have instance numbers assigned yet. | |
4695 */ | |
4696 tgt_dip = mdi_pi_get_client(pip); | |
4697 pdip = mdi_pi_get_phci(pip); | |
4698 if ((ddi_get_instance(tgt_dip) == -1) || (ddi_get_instance(pdip) == -1)) | |
4699 return; | |
4700 | |
4701 /* | |
4702 * A path oriented kstat has a ks_name of the form: | |
4703 * | |
4704 * <client-driver><instance>.t<pid>.<pHCI-driver><instance> | |
4705 * | |
4706 * We maintain a bidirectional 'target-port' to <pid> map, | |
4707 * called targetmap. All pathinfo nodes with the same | |
4708 * 'target-port' map to the same <pid>. The iostat(1M) code, | |
4709 * when parsing a path oriented kstat name, uses the <pid> as | |
4710 * a SCSI_VHCI_GET_TARGET_LONGNAME ioctl argument in order | |
4711 * to get the 'target-port'. For KSTAT_FLAG_PERSISTENT kstats, | |
4712 * this ioctl needs to translate a <pid> to a 'target-port' | |
4713 * even after all pathinfo nodes associated with the | |
4714 * 'target-port' have been destroyed. This is needed to support | |
4715 * consistent first-iteration activity-since-boot iostat(1M) | |
4716 * output. Because of this requirement, the mapping can't be | |
4717 * based on pathinfo information in a devinfo snapshot. | |
4718 */ | |
4719 | |
4720 /* determine 'target-port' */ | |
4721 if (mdi_prop_lookup_string(pip, | |
4722 "target-port", &target_port) == MDI_SUCCESS) { | |
4723 target_port_dup = i_ddi_strdup(target_port, KM_SLEEP); | |
4724 (void) mdi_prop_free(target_port); | |
4725 by_id = 1; | |
4726 } else { | |
4727 /* | |
4728 * If the pHCI did not set up 'target-port' on this | |
4729 * pathinfo node, assume that our client is the only | |
4730 * one with paths to the device by using the guid | |
4731 * value as the 'target-port'. Since no other client | |
4732 * will have the same guid, no other client will use | |
4733 * the same <pid>. NOTE: a client with an instance | |
4734 * number always has a guid. | |
4735 */ | |
4736 (void) ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, | |
4737 PROPFLAGS, MDI_CLIENT_GUID_PROP, &guid); | |
4738 target_port_dup = i_ddi_strdup(guid, KM_SLEEP); | |
4739 ddi_prop_free(guid); | |
4740 | |
4741 /* | |
4742 * For this type of mapping we don't want the | |
4743 * <id> -> 'target-port' mapping to be made. This | |
4744 * will cause the SCSI_VHCI_GET_TARGET_LONGNAME ioctl | |
4745 * to fail, and the iostat(1M) long '-n' output will | |
4746 * still use the <pid>. We do this because we just | |
4747 * made up the 'target-port' using the guid, and we | |
4748 * don't want to expose that fact in iostat output. | |
4749 */ | |
4750 by_id = 0; | |
4751 } | |
4752 | |
4753 /* find/establish <pid> given 'target-port' */ | |
4754 mutex_enter(&vhci_targetmap_mutex); | |
4755 if (mod_hash_find(vhci_targetmap_byport, | |
4756 (mod_hash_key_t)target_port_dup, &hv) == 0) { | |
4757 pid = (int)(intptr_t)hv; /* mapping exists */ | |
4758 } else { | |
4759 pid = vhci_targetmap_pid++; /* new mapping */ | |
4760 | |
4761 (void) mod_hash_insert(vhci_targetmap_byport, | |
4762 (mod_hash_key_t)target_port_dup, | |
4763 (mod_hash_val_t)(intptr_t)pid); | |
4764 if (by_id) { | |
4765 (void) mod_hash_insert(vhci_targetmap_bypid, | |
4766 (mod_hash_key_t)(uintptr_t)pid, | |
4767 (mod_hash_val_t)(uintptr_t)target_port_dup); | |
4768 } | |
4769 target_port_dup = NULL; /* owned by hash */ | |
4770 } | |
4771 mutex_exit(&vhci_targetmap_mutex); | |
4772 | |
4773 /* form kstat name */ | |
4774 (void) snprintf(ks_name, KSTAT_STRLEN, "%s%d.t%d.%s%d", | |
4775 ddi_driver_name(tgt_dip), ddi_get_instance(tgt_dip), | |
4776 pid, ddi_driver_name(pdip), ddi_get_instance(pdip)); | |
4777 | |
4778 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_path_online: path:%p " | |
4779 "kstat %s: pid %x <-> port %s\n", (void *)pip, | |
4780 ks_name, pid, target_port_dup)); | |
4781 if (target_port_dup) | |
4782 kmem_free(target_port_dup, strlen(target_port_dup) + 1); | |
4783 | |
4784 /* call mdi to create kstats with the name we built */ | |
4785 (void) mdi_pi_kstat_create(pip, ks_name); | |
4786 } | |
4787 | |
4788 /* ARGSUSED */ | |
4789 static int | |
4790 vhci_pathinfo_online(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
4791 { | |
4792 scsi_hba_tran_t *hba = NULL; | |
4793 struct scsi_device *psd = NULL; | |
4794 scsi_vhci_lun_t *vlun = NULL; | |
4795 dev_info_t *pdip = NULL; | |
4796 dev_info_t *tgt_dip; | |
4797 struct scsi_vhci *vhci; | |
4798 char *guid; | |
4799 struct scsi_failover *sf; | |
4800 struct scsi_failover_ops *sfo; | |
4801 char *override; | |
4802 scsi_vhci_priv_t *svp = NULL; | |
4803 struct buf *bp; | |
4804 struct scsi_address *ap; | |
4805 struct scsi_pkt *pkt; | |
4806 int rval = MDI_FAILURE; | |
4807 uint_t inq_size = VHCI_STD_INQ_SIZE; | |
4808 mpapi_item_list_t *list_ptr; | |
4809 mpapi_lu_data_t *ld; | |
4810 | |
4811 ASSERT(vdip != NULL); | |
4812 ASSERT(pip != NULL); | |
4813 | |
4814 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
4815 ASSERT(vhci != NULL); | |
4816 | |
4817 pdip = mdi_pi_get_phci(pip); | |
4818 hba = ddi_get_driver_private(pdip); | |
4819 ASSERT(hba != NULL); | |
4820 | |
4821 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
4822 ASSERT(svp != NULL); | |
4823 | |
4824 tgt_dip = mdi_pi_get_client(pip); | |
4825 ASSERT(tgt_dip != NULL); | |
4826 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, tgt_dip, PROPFLAGS, | |
4827 MDI_CLIENT_GUID_PROP, &guid) != DDI_SUCCESS) { | |
4828 VHCI_DEBUG(1, (CE_WARN, NULL, "vhci_path_online: lun guid " | |
4829 "property failed")); | |
4830 goto failure; | |
4831 } | |
4832 | |
4833 vlun = vhci_lun_lookup(tgt_dip); | |
4834 ASSERT(vlun != NULL); | |
4835 | |
4836 ddi_prop_free(guid); | |
4837 | |
4838 vlun->svl_dip = mdi_pi_get_client(pip); | |
4839 ASSERT(vlun->svl_dip != NULL); | |
4840 | |
4841 psd = svp->svp_psd; | |
4842 ASSERT(psd != NULL); | |
4843 | |
4844 /* | |
6023
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
4845 * For INQUIRY response buffer size, we use VHCI_STD_INQ_SIZE(132bytes) |
4851 | 4846 * instead of SUN_INQSIZE(48bytes) which is used in sd layer. This is |
4847 * because we could get the Vendor specific parameters(present 97th | |
4848 * byte onwards) which are required to process Vendor specific data | |
4849 * based on array type. | |
4850 * This INQUIRY buffer is freed in vhci_pathinfo_offline but NEVER | |
4851 * in a different layer like sd/phci transport. In other words, vhci | |
4852 * maintains its own copy of scsi_device and scsi_inquiry data on a | |
4853 * per-path basis. | |
4854 */ | |
4855 if (psd->sd_inq == NULL) { | |
4856 psd->sd_inq = (struct scsi_inquiry *) | |
4857 kmem_zalloc(inq_size, KM_SLEEP); | |
4858 } | |
4859 | |
4860 tgt_dip = psd->sd_dev; | |
4861 ASSERT(tgt_dip != NULL); | |
4862 | |
4863 /* | |
4864 * do inquiry to pass into probe routine; this | |
4865 * will avoid each probe routine doing scsi inquiry | |
4866 */ | |
4867 bp = getrbuf(KM_SLEEP); | |
4868 bp->b_un.b_addr = (caddr_t)psd->sd_inq; | |
4869 bp->b_flags = B_READ; | |
4870 bp->b_bcount = inq_size; | |
4871 bp->b_resid = 0; | |
4872 | |
4873 ap = &psd->sd_address; | |
4874 pkt = scsi_init_pkt(ap, NULL, bp, CDB_GROUP0, | |
4875 sizeof (struct scsi_arq_status), 0, 0, SLEEP_FUNC, NULL); | |
4876 if (pkt == NULL) { | |
4877 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_pathinfo_online: " | |
4878 "Inquiry init_pkt failed :%p\n", (void *)pip)); | |
4879 rval = MDI_FAILURE; | |
4880 goto failure; | |
4881 } | |
4882 pkt->pkt_cdbp[0] = SCMD_INQUIRY; | |
4883 pkt->pkt_cdbp[4] = (uchar_t)inq_size; | |
4884 pkt->pkt_time = 60; | |
4885 | |
4886 rval = vhci_do_scsi_cmd(pkt); | |
4887 scsi_destroy_pkt(pkt); | |
4888 freerbuf(bp); | |
4889 if (rval == 0) { | |
4890 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_pathinfo_online: " | |
4891 "Failover Inquiry failed path:%p rval:%x\n", | |
4892 (void *)pip, rval)); | |
4893 rval = MDI_FAILURE; | |
4894 goto failure; | |
4895 } | |
4896 | |
4897 /* | |
4898 * Determine if device is supported under scsi_vhci, and select | |
4899 * failover module. | |
4900 * | |
4901 * See if there is a scsi_vhci.conf file override for this devices's | |
4902 * VID/PID. The following values can be returned: | |
4903 * | |
4904 * NULL If the NULL is returned then there is no scsi_vhci.conf | |
4905 * override. For NULL, we determine the failover_ops for | |
4906 * this device by checking the sfo_device_probe entry | |
4907 * point for each 'fops' module, in order. | |
4908 * | |
4909 * NOTE: Correct operation may depend on module ordering | |
4910 * of 'specific' (failover modules that are completely | |
4911 * VID/PID table based) to 'generic' (failover modules | |
4912 * that based on T10 standards like TPGS). Currently, | |
4913 * the value of 'ddi-forceload' in scsi_vhci.conf is used | |
4914 * to establish the module list and probe order. | |
4915 * | |
4916 * "NONE" If value "NONE" is returned then there is a | |
4917 * scsi_vhci.conf VID/PID override to indicate the device | |
4918 * should not be supported under scsi_vhci (even if there | |
4919 * is an 'fops' module supporting the device). | |
4920 * | |
4921 * "<other>" If another value is returned then that value is the | |
4922 * name of the 'fops' module that should be used. | |
4923 */ | |
4924 sfo = NULL; /* "NONE" */ | |
4925 override = scsi_get_device_type_string( | |
4926 "scsi-vhci-failover-override", vdip, psd); | |
4927 | |
4928 if (override == NULL) { | |
4929 /* NULL: default: select based on sfo_device_probe results */ | |
4930 for (sf = scsi_failover_table; sf->sf_mod; sf++) { | |
4931 if ((sf->sf_sfo == NULL) || | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4932 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
|
4933 &vlun->svl_fops_ctpriv) == SFO_DEVICE_PROBE_PHCI) |
4851 | 4934 continue; |
4935 | |
4936 /* found failover module, supported under scsi_vhci */ | |
4937 sfo = sf->sf_sfo; | |
4938 vlun->svl_fops_name = | |
4939 i_ddi_strdup(sfo->sfo_name, KM_SLEEP); | |
4940 break; | |
4941 } | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4942 } else if (strcasecmp(override, "NONE")) { |
4851 | 4943 /* !"NONE": select based on driver.conf specified name */ |
4944 for (sf = scsi_failover_table, sfo = NULL; sf->sf_mod; sf++) { | |
4945 if ((sf->sf_sfo == NULL) || | |
4946 (sf->sf_sfo->sfo_name == NULL) || | |
4947 strcmp(override, sf->sf_sfo->sfo_name)) | |
4948 continue; | |
4949 | |
4950 /* found failover module, supported under scsi_vhci */ | |
4951 sfo = sf->sf_sfo; | |
4952 vlun->svl_fops_name = kmem_alloc(strlen("conf ") + | |
4953 strlen(sfo->sfo_name) + 1, KM_SLEEP); | |
4954 (void) sprintf(vlun->svl_fops_name, "conf %s", | |
4955 sfo->sfo_name); | |
4956 break; | |
4957 } | |
4958 } | |
4959 if (override) | |
4960 kmem_free(override, strlen(override) + 1); | |
4961 | |
4962 if (sfo == NULL) { | |
4963 /* no failover module - device not supported */ | |
4964 VHCI_DEBUG(1, (CE_NOTE, vhci->vhci_dip, | |
4965 "!vhci_pathinfo_online: dev (path 0x%p) not " | |
4966 "supported\n", (void *)pip)); | |
4967 vlun->svl_not_supported = 1; | |
4968 rval = MDI_NOT_SUPPORTED; | |
4969 goto done; | |
4970 } | |
4971 | |
4972 /* failover supported for device - save failover_ops in vlun */ | |
4973 vlun->svl_fops = sfo; | |
4974 | |
4975 /* | |
4976 * Obtain the device-type based mpxio options as specified in | |
4977 * scsi_vhci.conf file. | |
4978 * | |
4979 * NOTE: currently, the end result is a call to | |
4980 * mdi_set_lb_region_size(). | |
4981 */ | |
4982 vhci_get_device_type_mpxio_options(vdip, tgt_dip, psd); | |
4983 | |
4984 /* | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4985 * 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
|
4986 * lb policy, save the current value. |
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4987 */ |
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4988 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
|
4989 |
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
4990 /* |
4851 | 4991 * if PGR is active, revalidate key and register on this path also, |
4992 * if key is still valid | |
4993 */ | |
4994 sema_p(&vlun->svl_pgr_sema); | |
4995 if (vlun->svl_pgr_active) { | |
4996 rval = vhci_pgr_validate_and_register(svp); | |
4997 if (rval != 1) { | |
4998 rval = MDI_FAILURE; | |
4999 sema_v(&vlun->svl_pgr_sema); | |
5000 goto failure; | |
5001 } | |
5002 } | |
5003 sema_v(&vlun->svl_pgr_sema); | |
5004 | |
5005 if (svp->svp_new_path) { | |
5006 /* | |
5007 * Last chance to perform any cleanup operations on this | |
5008 * new path before making this path completely online. | |
5009 */ | |
5010 svp->svp_new_path = 0; | |
5011 | |
5012 /* | |
5013 * If scsi_vhci knows the lun is alread RESERVE'd, | |
5014 * then skip the issue of RELEASE on new path. | |
5015 */ | |
5016 if ((vlun->svl_flags & VLUN_RESERVE_ACTIVE_FLG) == 0) { | |
5017 /* | |
5018 * Issue SCSI-2 RELEASE only for the first time on | |
5019 * a new path just in case the host rebooted and | |
5020 * a reservation is still pending on this path. | |
5021 * IBM Shark storage does not clear RESERVE upon | |
5022 * host reboot. | |
5023 */ | |
5024 ap = &psd->sd_address; | |
5025 pkt = scsi_init_pkt(ap, NULL, NULL, CDB_GROUP0, | |
5026 sizeof (struct scsi_arq_status), 0, 0, | |
5027 SLEEP_FUNC, NULL); | |
5028 if (pkt == NULL) { | |
5029 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
5030 "!vhci_pathinfo_online: " | |
5031 "Release init_pkt failed :%p\n", | |
5032 (void *)pip)); | |
5033 rval = MDI_FAILURE; | |
5034 goto failure; | |
5035 } | |
5036 pkt->pkt_cdbp[0] = SCMD_RELEASE; | |
5037 pkt->pkt_time = 60; | |
5038 | |
5039 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
5040 "!vhci_path_online: path:%p " | |
5041 "Issued SCSI-2 RELEASE\n", (void *)pip)); | |
5042 | |
5043 /* Ignore the return value */ | |
5044 (void) vhci_do_scsi_cmd(pkt); | |
5045 scsi_destroy_pkt(pkt); | |
5046 } | |
5047 } | |
5048 | |
5049 rval = vhci_update_pathinfo(psd, pip, sfo, vlun, vhci); | |
5050 if (rval == MDI_FAILURE) { | |
5051 goto failure; | |
5052 } | |
5053 | |
5054 /* Initialize MP-API data */ | |
5055 vhci_update_mpapi_data(vhci, vlun, pip); | |
5056 | |
5057 /* | |
5058 * MP-API also needs the Inquiry data to be maintained in the | |
5059 * mp_vendor_prop_t structure, so find the lun and update its | |
5060 * structure with this data. | |
5061 */ | |
5062 list_ptr = (mpapi_item_list_t *)vhci_get_mpapi_item(vhci, NULL, | |
5063 MP_OBJECT_TYPE_MULTIPATH_LU, (void *)vlun); | |
5064 ld = (mpapi_lu_data_t *)list_ptr->item->idata; | |
5065 if (ld != NULL) { | |
5066 bcopy(psd->sd_inq->inq_vid, ld->prop.prodInfo.vendor, 8); | |
5067 bcopy(psd->sd_inq->inq_pid, ld->prop.prodInfo.product, 16); | |
5068 bcopy(psd->sd_inq->inq_revision, ld->prop.prodInfo.revision, 4); | |
5069 } else { | |
5070 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_pathinfo_online: " | |
5071 "mpapi_lu_data_t is NULL")); | |
5072 } | |
5073 | |
5074 /* create kstats for path */ | |
5075 vhci_kstat_create_pathinfo(pip); | |
5076 | |
5077 done: | |
5078 mutex_enter(&vhci_global_mutex); | |
5079 cv_broadcast(&vhci_cv); | |
5080 mutex_exit(&vhci_global_mutex); | |
5081 | |
5082 if (vlun->svl_setcap_done) { | |
5083 (void) vhci_pHCI_cap(ap, "sector-size", | |
5084 vlun->svl_sector_size, 1, pip); | |
5085 } | |
5086 | |
5087 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_path_online: path:%p\n", | |
5088 (void *)pip)); | |
5089 | |
5090 failure: | |
5091 if ((rval != MDI_SUCCESS) && psd->sd_inq) { | |
5092 kmem_free((caddr_t)psd->sd_inq, inq_size); | |
5093 psd->sd_inq = (struct scsi_inquiry *)NULL; | |
5094 } | |
5095 return (rval); | |
5096 } | |
5097 | |
5098 /* | |
5099 * path offline handler. Release all bindings that will not be | |
5100 * released by the normal packet transport/completion code path. | |
5101 * Since we don't (presently) keep any bindings alive outside of | |
5102 * the in-transport packets (which will be released on completion) | |
5103 * there is not much to do here. | |
5104 */ | |
5105 /* ARGSUSED */ | |
5106 static int | |
5107 vhci_pathinfo_offline(dev_info_t *vdip, mdi_pathinfo_t *pip, int flags) | |
5108 { | |
5109 scsi_hba_tran_t *hba = NULL; | |
5110 struct scsi_device *psd = NULL; | |
5111 dev_info_t *pdip = NULL; | |
5112 dev_info_t *cdip = NULL; | |
5113 scsi_vhci_priv_t *svp = NULL; | |
5114 uint_t inq_size = VHCI_STD_INQ_SIZE; | |
5115 | |
5116 ASSERT(vdip != NULL); | |
5117 ASSERT(pip != NULL); | |
5118 | |
5119 pdip = mdi_pi_get_phci(pip); | |
5120 ASSERT(pdip != NULL); | |
5121 if (pdip == NULL) { | |
5122 VHCI_DEBUG(1, (CE_WARN, vdip, "Invalid path 0x%p: NULL " | |
5123 "phci dip", (void *)pip)); | |
5124 return (MDI_FAILURE); | |
5125 } | |
5126 | |
5127 cdip = mdi_pi_get_client(pip); | |
5128 ASSERT(cdip != NULL); | |
5129 if (cdip == NULL) { | |
5130 VHCI_DEBUG(1, (CE_WARN, vdip, "Invalid path 0x%p: NULL " | |
5131 "client dip", (void *)pip)); | |
5132 return (MDI_FAILURE); | |
5133 } | |
5134 | |
5135 hba = ddi_get_driver_private(pdip); | |
5136 ASSERT(hba != NULL); | |
5137 | |
5138 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
5139 if (svp == NULL) { | |
5140 /* | |
5141 * mdi_pathinfo node in INIT state can have vHCI private | |
5142 * information set to null | |
5143 */ | |
5144 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
5145 "svp is NULL for pip 0x%p\n", (void *)pip)); | |
5146 return (MDI_SUCCESS); | |
5147 } | |
5148 | |
5149 psd = svp->svp_psd; | |
5150 ASSERT(psd != NULL); | |
5151 | |
5152 mutex_enter(&svp->svp_mutex); | |
5153 | |
5154 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
5155 "%d cmds pending on path: 0x%p\n", svp->svp_cmds, (void *)pip)); | |
5156 while (svp->svp_cmds != 0) { | |
5157 if (cv_timedwait(&svp->svp_cv, &svp->svp_mutex, | |
5158 ddi_get_lbolt() + | |
5159 drv_usectohz(vhci_path_quiesce_timeout * 1000000)) == -1) { | |
5160 /* | |
5161 * The timeout time reached without the condition | |
5162 * being signaled. | |
5163 */ | |
5164 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
5165 "Timeout reached on path 0x%p without the cond\n", | |
5166 (void *)pip)); | |
5167 VHCI_DEBUG(1, (CE_NOTE, vdip, "!vhci_pathinfo_offline: " | |
5168 "%d cmds still pending on path: 0x%p\n", | |
5169 svp->svp_cmds, (void *)pip)); | |
5170 break; | |
5171 } | |
5172 } | |
5173 mutex_exit(&svp->svp_mutex); | |
5174 | |
5175 /* | |
5176 * Check to see if this vlun has an active SCSI-II RESERVE. And this | |
5177 * is the pip for the path that has been reserved. | |
5178 * If so clear the reservation by sending a reset, so the host will not | |
5179 * get a reservation conflict. Reset the flag VLUN_RESERVE_ACTIVE_FLG | |
5180 * for this lun. Also a reset notify is sent to the target driver | |
5181 * just in case the POR check condition is cleared by some other layer | |
5182 * in the stack. | |
5183 */ | |
5184 if (svp->svp_svl->svl_flags & VLUN_RESERVE_ACTIVE_FLG) { | |
5185 if (pip == svp->svp_svl->svl_resrv_pip) { | |
5186 if (vhci_recovery_reset(svp->svp_svl, | |
5187 &svp->svp_psd->sd_address, TRUE, | |
5188 VHCI_DEPTH_TARGET) == 0) { | |
5189 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
5190 "!vhci_pathinfo_offline (pip:%p):" | |
5191 "reset failed, retrying\n", (void *)pip)); | |
5192 delay(1*drv_usectohz(1000000)); | |
5193 if (vhci_recovery_reset(svp->svp_svl, | |
5194 &svp->svp_psd->sd_address, TRUE, | |
5195 VHCI_DEPTH_TARGET) == 0) { | |
5196 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
5197 "!vhci_pathinfo_offline " | |
5198 "(pip:%p): reset failed, " | |
5199 "giving up!\n", (void *)pip)); | |
5200 } | |
5201 } | |
5202 svp->svp_svl->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
5203 } | |
5204 } | |
5205 | |
5206 mdi_pi_set_state(pip, MDI_PATHINFO_STATE_OFFLINE); | |
5207 if (psd->sd_inq) { | |
5208 kmem_free((caddr_t)psd->sd_inq, inq_size); | |
5209 psd->sd_inq = (struct scsi_inquiry *)NULL; | |
5210 } | |
5211 vhci_mpapi_set_path_state(vdip, pip, MP_DRVR_PATH_STATE_REMOVED); | |
5212 | |
5213 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
5214 "!vhci_pathinfo_offline: offlined path 0x%p\n", (void *)pip)); | |
5215 return (MDI_SUCCESS); | |
5216 } | |
5217 | |
5218 | |
5219 /* | |
5220 * routine for SCSI VHCI IOCTL implementation. | |
5221 */ | |
5222 /* ARGSUSED */ | |
5223 static int | |
5224 vhci_ctl(dev_t dev, int cmd, intptr_t data, int mode, cred_t *credp, int *rval) | |
5225 { | |
5226 struct scsi_vhci *vhci; | |
5227 dev_info_t *vdip; | |
5228 mdi_pathinfo_t *pip; | |
5229 int instance, held; | |
5230 int retval = 0; | |
5231 caddr_t phci_path = NULL, client_path = NULL; | |
5232 caddr_t paddr = NULL; | |
5233 sv_iocdata_t ioc; | |
5234 sv_iocdata_t *pioc = &ioc; | |
5235 sv_switch_to_cntlr_iocdata_t iocsc; | |
5236 sv_switch_to_cntlr_iocdata_t *piocsc = &iocsc; | |
5237 caddr_t s; | |
5238 scsi_vhci_lun_t *vlun; | |
5239 struct scsi_failover_ops *fo; | |
5240 char *pclass; | |
5241 | |
5242 /* Check for validity of vhci structure */ | |
5243 vhci = ddi_get_soft_state(vhci_softstate, MINOR2INST(getminor(dev))); | |
5244 if (vhci == NULL) { | |
5245 return (ENXIO); | |
5246 } | |
5247 | |
5248 mutex_enter(&vhci->vhci_mutex); | |
5249 if ((vhci->vhci_state & VHCI_STATE_OPEN) == 0) { | |
5250 mutex_exit(&vhci->vhci_mutex); | |
5251 return (ENXIO); | |
5252 } | |
5253 mutex_exit(&vhci->vhci_mutex); | |
5254 | |
5255 /* Get the vhci dip */ | |
5256 vdip = vhci->vhci_dip; | |
5257 ASSERT(vdip != NULL); | |
5258 instance = ddi_get_instance(vdip); | |
5259 | |
5260 /* Allocate memory for getting parameters from userland */ | |
5261 phci_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP); | |
5262 client_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP); | |
5263 paddr = kmem_zalloc(MAXNAMELEN, KM_SLEEP); | |
5264 | |
5265 /* | |
5266 * Set a local variable indicating the ioctl name. Used for | |
5267 * printing debug strings. | |
5268 */ | |
5269 switch (cmd) { | |
5270 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
5271 s = "GET_CLIENT_MULTIPATH_INFO"; | |
5272 break; | |
5273 | |
5274 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
5275 s = "GET_PHCI_MULTIPATH_INFO"; | |
5276 break; | |
5277 | |
5278 case SCSI_VHCI_GET_CLIENT_NAME: | |
5279 s = "GET_CLIENT_NAME"; | |
5280 break; | |
5281 | |
5282 case SCSI_VHCI_PATH_ONLINE: | |
5283 s = "PATH_ONLINE"; | |
5284 break; | |
5285 | |
5286 case SCSI_VHCI_PATH_OFFLINE: | |
5287 s = "PATH_OFFLINE"; | |
5288 break; | |
5289 | |
5290 case SCSI_VHCI_PATH_STANDBY: | |
5291 s = "PATH_STANDBY"; | |
5292 break; | |
5293 | |
5294 case SCSI_VHCI_PATH_TEST: | |
5295 s = "PATH_TEST"; | |
5296 break; | |
5297 | |
5298 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
5299 s = "SWITCH_TO_CNTLR"; | |
5300 break; | |
5301 case SCSI_VHCI_PATH_DISABLE: | |
5302 s = "PATH_DISABLE"; | |
5303 break; | |
5304 case SCSI_VHCI_PATH_ENABLE: | |
5305 s = "PATH_ENABLE"; | |
5306 break; | |
5307 | |
5308 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
5309 s = "GET_TARGET_LONGNAME"; | |
5310 break; | |
5311 | |
5312 #ifdef DEBUG | |
5313 case SCSI_VHCI_CONFIGURE_PHCI: | |
5314 s = "CONFIGURE_PHCI"; | |
5315 break; | |
5316 | |
5317 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
5318 s = "UNCONFIGURE_PHCI"; | |
5319 break; | |
5320 #endif | |
5321 | |
5322 default: | |
5323 s = "Unknown"; | |
5324 vhci_log(CE_NOTE, vdip, | |
5325 "!vhci%d: ioctl %x (unsupported ioctl)", instance, cmd); | |
5326 retval = ENOTSUP; | |
5327 break; | |
5328 } | |
5329 if (retval != 0) { | |
5330 goto end; | |
5331 } | |
5332 | |
5333 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci%d: ioctl <%s>", instance, s)); | |
5334 | |
5335 /* | |
5336 * Get IOCTL parameters from userland | |
5337 */ | |
5338 switch (cmd) { | |
5339 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
5340 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
5341 case SCSI_VHCI_GET_CLIENT_NAME: | |
5342 case SCSI_VHCI_PATH_ONLINE: | |
5343 case SCSI_VHCI_PATH_OFFLINE: | |
5344 case SCSI_VHCI_PATH_STANDBY: | |
5345 case SCSI_VHCI_PATH_TEST: | |
5346 case SCSI_VHCI_PATH_DISABLE: | |
5347 case SCSI_VHCI_PATH_ENABLE: | |
5348 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
5349 #ifdef DEBUG | |
5350 case SCSI_VHCI_CONFIGURE_PHCI: | |
5351 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
5352 #endif | |
5353 retval = vhci_get_iocdata((const void *)data, pioc, mode, s); | |
5354 break; | |
5355 | |
5356 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
5357 retval = vhci_get_iocswitchdata((const void *)data, piocsc, | |
5358 mode, s); | |
5359 break; | |
5360 } | |
5361 if (retval != 0) { | |
5362 goto end; | |
5363 } | |
5364 | |
5365 | |
5366 /* | |
5367 * Process the IOCTL | |
5368 */ | |
5369 switch (cmd) { | |
5370 case SCSI_VHCI_GET_CLIENT_MULTIPATH_INFO: | |
5371 { | |
5372 uint_t num_paths; /* Num paths to client dev */ | |
5373 sv_path_info_t *upibuf = NULL; /* To keep userland values */ | |
5374 sv_path_info_t *kpibuf = NULL; /* Kernel data for ioctls */ | |
5375 dev_info_t *cdip; /* Client device dip */ | |
5376 | |
5377 if (pioc->ret_elem == NULL) { | |
5378 retval = EINVAL; | |
5379 break; | |
5380 } | |
5381 | |
5382 /* Get client device path from user land */ | |
5383 if (vhci_ioc_get_client_path(pioc, client_path, mode, s)) { | |
5384 retval = EFAULT; | |
5385 break; | |
5386 } | |
5387 | |
5388 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5389 "client <%s>", s, client_path)); | |
5390 | |
5391 /* Get number of paths to this client device */ | |
5392 if ((cdip = mdi_client_path2devinfo(vdip, client_path)) | |
5393 == NULL) { | |
5394 retval = ENXIO; | |
5395 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5396 "client dip doesn't exist. invalid path <%s>", | |
5397 s, client_path)); | |
5398 break; | |
5399 } | |
5400 num_paths = mdi_client_get_path_count(cdip); | |
5401 | |
5402 if (ddi_copyout(&num_paths, pioc->ret_elem, | |
5403 sizeof (num_paths), mode)) { | |
5404 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5405 "num_paths copyout failed", s)); | |
5406 retval = EFAULT; | |
5407 break; | |
5408 } | |
5409 | |
5410 /* If user just wanted num_paths, then return */ | |
5411 if (pioc->buf_elem == 0 || pioc->ret_buf == NULL || | |
5412 num_paths == 0) { | |
5413 break; | |
5414 } | |
5415 | |
5416 /* Set num_paths to value as much as can be sent to userland */ | |
5417 if (num_paths > pioc->buf_elem) { | |
5418 num_paths = pioc->buf_elem; | |
5419 } | |
5420 | |
5421 /* Allocate memory and get userland pointers */ | |
5422 if (vhci_ioc_alloc_pathinfo(&upibuf, &kpibuf, num_paths, | |
5423 pioc, mode, s) != 0) { | |
5424 retval = EFAULT; | |
5425 break; | |
5426 } | |
5427 ASSERT(upibuf != NULL); | |
5428 ASSERT(kpibuf != NULL); | |
5429 | |
5430 /* | |
5431 * Get the path information and send it to userland. | |
5432 */ | |
5433 if (vhci_get_client_path_list(cdip, kpibuf, num_paths) | |
5434 != MDI_SUCCESS) { | |
5435 retval = ENXIO; | |
5436 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
5437 break; | |
5438 } | |
5439 | |
5440 if (vhci_ioc_send_pathinfo(upibuf, kpibuf, num_paths, | |
5441 pioc, mode, s)) { | |
5442 retval = EFAULT; | |
5443 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
5444 break; | |
5445 } | |
5446 | |
5447 /* Free the memory allocated for path information */ | |
5448 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
5449 break; | |
5450 } | |
5451 | |
5452 case SCSI_VHCI_GET_PHCI_MULTIPATH_INFO: | |
5453 { | |
5454 uint_t num_paths; /* Num paths to client dev */ | |
5455 sv_path_info_t *upibuf = NULL; /* To keep userland values */ | |
5456 sv_path_info_t *kpibuf = NULL; /* Kernel data for ioctls */ | |
5457 dev_info_t *pdip; /* PHCI device dip */ | |
5458 | |
5459 if (pioc->ret_elem == NULL) { | |
5460 retval = EINVAL; | |
5461 break; | |
5462 } | |
5463 | |
5464 /* Get PHCI device path from user land */ | |
5465 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
5466 retval = EFAULT; | |
5467 break; | |
5468 } | |
5469 | |
5470 VHCI_DEBUG(6, (CE_WARN, vdip, | |
5471 "!vhci_ioctl: ioctl <%s> phci <%s>", s, phci_path)); | |
5472 | |
5473 /* Get number of devices associated with this PHCI device */ | |
5474 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
5475 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5476 "phci dip doesn't exist. invalid path <%s>", | |
5477 s, phci_path)); | |
5478 retval = ENXIO; | |
5479 break; | |
5480 } | |
5481 | |
5482 num_paths = mdi_phci_get_path_count(pdip); | |
5483 | |
5484 if (ddi_copyout(&num_paths, pioc->ret_elem, | |
5485 sizeof (num_paths), mode)) { | |
5486 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5487 "num_paths copyout failed", s)); | |
5488 retval = EFAULT; | |
5489 break; | |
5490 } | |
5491 | |
5492 /* If user just wanted num_paths, then return */ | |
5493 if (pioc->buf_elem == 0 || pioc->ret_buf == NULL || | |
5494 num_paths == 0) { | |
5495 break; | |
5496 } | |
5497 | |
5498 /* Set num_paths to value as much as can be sent to userland */ | |
5499 if (num_paths > pioc->buf_elem) { | |
5500 num_paths = pioc->buf_elem; | |
5501 } | |
5502 | |
5503 /* Allocate memory and get userland pointers */ | |
5504 if (vhci_ioc_alloc_pathinfo(&upibuf, &kpibuf, num_paths, | |
5505 pioc, mode, s) != 0) { | |
5506 retval = EFAULT; | |
5507 break; | |
5508 } | |
5509 ASSERT(upibuf != NULL); | |
5510 ASSERT(kpibuf != NULL); | |
5511 | |
5512 /* | |
5513 * Get the path information and send it to userland. | |
5514 */ | |
5515 if (vhci_get_phci_path_list(pdip, kpibuf, num_paths) | |
5516 != MDI_SUCCESS) { | |
5517 retval = ENXIO; | |
5518 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
5519 break; | |
5520 } | |
5521 | |
5522 if (vhci_ioc_send_pathinfo(upibuf, kpibuf, num_paths, | |
5523 pioc, mode, s)) { | |
5524 retval = EFAULT; | |
5525 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
5526 break; | |
5527 } | |
5528 | |
5529 /* Free the memory allocated for path information */ | |
5530 vhci_ioc_free_pathinfo(upibuf, kpibuf, num_paths); | |
5531 break; | |
5532 } | |
5533 | |
5534 case SCSI_VHCI_GET_CLIENT_NAME: | |
5535 { | |
5536 dev_info_t *cdip, *pdip; | |
5537 | |
5538 /* Get PHCI path and device address from user land */ | |
5539 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s) || | |
5540 vhci_ioc_get_paddr(pioc, paddr, mode, s)) { | |
5541 retval = EFAULT; | |
5542 break; | |
5543 } | |
5544 | |
5545 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5546 "phci <%s>, paddr <%s>", s, phci_path, paddr)); | |
5547 | |
5548 /* Get the PHCI dip */ | |
5549 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
5550 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5551 "phci dip doesn't exist. invalid path <%s>", | |
5552 s, phci_path)); | |
5553 retval = ENXIO; | |
5554 break; | |
5555 } | |
5556 | |
5557 if ((pip = mdi_pi_find(pdip, NULL, paddr)) == NULL) { | |
5558 VHCI_DEBUG(1, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5559 "pathinfo doesn't exist. invalid device addr", s)); | |
5560 retval = ENXIO; | |
5561 break; | |
5562 } | |
5563 | |
5564 /* Get the client device pathname and send to userland */ | |
5565 cdip = mdi_pi_get_client(pip); | |
5566 vhci_ioc_devi_to_path(cdip, client_path); | |
5567 | |
5568 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5569 "client <%s>", s, client_path)); | |
5570 | |
5571 if (vhci_ioc_send_client_path(client_path, pioc, mode, s)) { | |
5572 retval = EFAULT; | |
5573 break; | |
5574 } | |
5575 break; | |
5576 } | |
5577 | |
5578 case SCSI_VHCI_PATH_ONLINE: | |
5579 case SCSI_VHCI_PATH_OFFLINE: | |
5580 case SCSI_VHCI_PATH_STANDBY: | |
5581 case SCSI_VHCI_PATH_TEST: | |
5582 { | |
5583 dev_info_t *pdip; /* PHCI dip */ | |
5584 | |
5585 /* Get PHCI path and device address from user land */ | |
5586 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s) || | |
5587 vhci_ioc_get_paddr(pioc, paddr, mode, s)) { | |
5588 retval = EFAULT; | |
5589 break; | |
5590 } | |
5591 | |
5592 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5593 "phci <%s>, paddr <%s>", s, phci_path, paddr)); | |
5594 | |
5595 /* Get the PHCI dip */ | |
5596 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
5597 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5598 "phci dip doesn't exist. invalid path <%s>", | |
5599 s, phci_path)); | |
5600 retval = ENXIO; | |
5601 break; | |
5602 } | |
5603 | |
5604 if ((pip = mdi_pi_find(pdip, NULL, paddr)) == NULL) { | |
5605 VHCI_DEBUG(1, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5606 "pathinfo doesn't exist. invalid device addr", s)); | |
5607 retval = ENXIO; | |
5608 break; | |
5609 } | |
5610 | |
5611 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5612 "Calling MDI function to change device state", s)); | |
5613 | |
5614 switch (cmd) { | |
5615 case SCSI_VHCI_PATH_ONLINE: | |
5616 retval = mdi_pi_online(pip, 0); | |
5617 break; | |
5618 | |
5619 case SCSI_VHCI_PATH_OFFLINE: | |
5620 retval = mdi_pi_offline(pip, 0); | |
5621 break; | |
5622 | |
5623 case SCSI_VHCI_PATH_STANDBY: | |
5624 retval = mdi_pi_standby(pip, 0); | |
5625 break; | |
5626 | |
5627 case SCSI_VHCI_PATH_TEST: | |
5628 break; | |
5629 } | |
5630 break; | |
5631 } | |
5632 | |
5633 case SCSI_VHCI_SWITCH_TO_CNTLR: | |
5634 { | |
5635 dev_info_t *cdip; | |
5636 struct scsi_device *devp; | |
5637 | |
5638 /* Get the client device pathname */ | |
5639 if (ddi_copyin(piocsc->client, client_path, | |
5640 MAXPATHLEN, mode)) { | |
5641 VHCI_DEBUG(2, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5642 "client_path copyin failed", s)); | |
5643 retval = EFAULT; | |
5644 break; | |
5645 } | |
5646 | |
5647 /* Get the path class to which user wants to switch */ | |
5648 if (ddi_copyin(piocsc->class, paddr, MAXNAMELEN, mode)) { | |
5649 VHCI_DEBUG(2, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5650 "controller_class copyin failed", s)); | |
5651 retval = EFAULT; | |
5652 break; | |
5653 } | |
5654 | |
5655 /* Perform validity checks */ | |
5656 if ((cdip = mdi_client_path2devinfo(vdip, | |
5657 client_path)) == NULL) { | |
5658 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5659 "client dip doesn't exist. invalid path <%s>", | |
5660 s, client_path)); | |
5661 retval = ENXIO; | |
5662 break; | |
5663 } | |
5664 | |
5665 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: Calling MDI func " | |
5666 "to switch controller")); | |
5667 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: client <%s> " | |
5668 "class <%s>", client_path, paddr)); | |
5669 | |
5670 if (strcmp(paddr, PCLASS_PRIMARY) && | |
5671 strcmp(paddr, PCLASS_SECONDARY)) { | |
5672 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5673 "invalid path class <%s>", s, paddr)); | |
5674 retval = ENXIO; | |
5675 break; | |
5676 } | |
5677 | |
5678 devp = ddi_get_driver_private(cdip); | |
5679 if (devp == NULL) { | |
5680 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5681 "invalid scsi device <%s>", s, client_path)); | |
5682 retval = ENXIO; | |
5683 break; | |
5684 } | |
5685 vlun = ADDR2VLUN(&devp->sd_address); | |
5686 ASSERT(vlun); | |
5687 | |
5688 /* | |
5689 * Checking to see if device has only one pclass, PRIMARY. | |
5690 * If so this device doesn't support failovers. Assumed | |
5691 * that the devices with one pclass is PRIMARY, as thats the | |
5692 * case today. If this is not true and in future other | |
5693 * symmetric devices are supported with other pclass, this | |
5694 * IOCTL shall have to be overhauled anyways as now the only | |
5695 * arguments it accepts are PRIMARY and SECONDARY. | |
5696 */ | |
5697 fo = vlun->svl_fops; | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
5698 if (fo->sfo_pathclass_next(PCLASS_PRIMARY, &pclass, |
4851 | 5699 vlun->svl_fops_ctpriv)) { |
5700 retval = ENOTSUP; | |
5701 break; | |
5702 } | |
5703 | |
5704 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
5705 mutex_enter(&vlun->svl_mutex); | |
5706 if (vlun->svl_active_pclass != NULL) { | |
5707 if (strcmp(vlun->svl_active_pclass, paddr) == 0) { | |
5708 mutex_exit(&vlun->svl_mutex); | |
5709 retval = EALREADY; | |
5710 VHCI_RELEASE_LUN(vlun); | |
5711 break; | |
5712 } | |
5713 } | |
5714 mutex_exit(&vlun->svl_mutex); | |
5715 /* Call mdi function to cause a switch over */ | |
5716 retval = mdi_failover(vdip, cdip, MDI_FAILOVER_SYNC); | |
5717 if (retval == MDI_SUCCESS) { | |
5718 retval = 0; | |
5719 } else if (retval == MDI_BUSY) { | |
5720 retval = EBUSY; | |
5721 } else { | |
5722 retval = EIO; | |
5723 } | |
5724 VHCI_RELEASE_LUN(vlun); | |
5725 break; | |
5726 } | |
5727 | |
5728 case SCSI_VHCI_PATH_ENABLE: | |
5729 case SCSI_VHCI_PATH_DISABLE: | |
5730 { | |
5731 dev_info_t *cdip, *pdip; | |
5732 | |
5733 /* | |
5734 * Get client device path from user land | |
5735 */ | |
5736 if (vhci_ioc_get_client_path(pioc, client_path, mode, s)) { | |
5737 retval = EFAULT; | |
5738 break; | |
5739 } | |
5740 | |
5741 /* | |
5742 * Get Phci device path from user land | |
5743 */ | |
5744 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
5745 retval = EFAULT; | |
5746 break; | |
5747 } | |
5748 | |
5749 /* | |
5750 * Get the devinfo for the Phci. | |
5751 */ | |
5752 if ((pdip = mdi_phci_path2devinfo(vdip, phci_path)) == NULL) { | |
5753 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5754 "phci dip doesn't exist. invalid path <%s>", | |
5755 s, phci_path)); | |
5756 retval = ENXIO; | |
5757 break; | |
5758 } | |
5759 | |
5760 /* | |
5761 * If the client path is set to /scsi_vhci then we need | |
5762 * to do the operation on all the clients so set cdip to NULL. | |
5763 * Else, try to get the client dip. | |
5764 */ | |
5765 if (strcmp(client_path, "/scsi_vhci") == 0) { | |
5766 cdip = NULL; | |
5767 } else { | |
5768 if ((cdip = mdi_client_path2devinfo(vdip, | |
5769 client_path)) == NULL) { | |
5770 retval = ENXIO; | |
5771 VHCI_DEBUG(1, (CE_WARN, NULL, | |
5772 "!vhci_ioctl: ioctl <%s> client dip " | |
5773 "doesn't exist. invalid path <%s>", | |
5774 s, client_path)); | |
5775 break; | |
5776 } | |
5777 } | |
5778 | |
5779 if (cmd == SCSI_VHCI_PATH_ENABLE) | |
5780 retval = mdi_pi_enable(cdip, pdip, USER_DISABLE); | |
5781 else | |
5782 retval = mdi_pi_disable(cdip, pdip, USER_DISABLE); | |
5783 | |
5784 break; | |
5785 } | |
5786 | |
5787 case SCSI_VHCI_GET_TARGET_LONGNAME: | |
5788 { | |
5789 uint_t pid = pioc->buf_elem; | |
5790 char *target_port; | |
5791 mod_hash_val_t hv; | |
5792 | |
5793 /* targetmap lookup of 'target-port' by <pid> */ | |
5794 if (mod_hash_find(vhci_targetmap_bypid, | |
5795 (mod_hash_key_t)(uintptr_t)pid, &hv) != 0) { | |
5796 /* | |
5797 * NOTE: failure to find the mapping is OK for guid | |
5798 * based 'target-port' values. | |
5799 */ | |
5800 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5801 "targetport mapping doesn't exist: pid %d", | |
5802 s, pid)); | |
5803 retval = ENXIO; | |
5804 break; | |
5805 } | |
5806 | |
5807 /* copyout 'target-port' result */ | |
5808 target_port = (char *)hv; | |
5809 if (copyoutstr(target_port, pioc->addr, MAXNAMELEN, NULL)) { | |
5810 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5811 "targetport copyout failed: len: %d", | |
5812 s, (int)strlen(target_port))); | |
5813 retval = EFAULT; | |
5814 } | |
5815 break; | |
5816 } | |
5817 | |
5818 #ifdef DEBUG | |
5819 case SCSI_VHCI_CONFIGURE_PHCI: | |
5820 { | |
5821 dev_info_t *pdip; | |
5822 | |
5823 /* Get PHCI path and device address from user land */ | |
5824 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
5825 retval = EFAULT; | |
5826 break; | |
5827 } | |
5828 | |
5829 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5830 "phci <%s>", s, phci_path)); | |
5831 | |
5832 /* Get the PHCI dip */ | |
5833 if ((pdip = e_ddi_hold_devi_by_path(phci_path, 0)) == NULL) { | |
5834 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5835 "phci dip doesn't exist. invalid path <%s>", | |
5836 s, phci_path)); | |
5837 retval = ENXIO; | |
5838 break; | |
5839 } | |
5840 | |
5841 if (ndi_devi_config(pdip, | |
5842 NDI_DEVFS_CLEAN|NDI_DEVI_PERSIST) != NDI_SUCCESS) { | |
5843 retval = EIO; | |
5844 } | |
5845 | |
5846 ddi_release_devi(pdip); | |
5847 break; | |
5848 } | |
5849 | |
5850 case SCSI_VHCI_UNCONFIGURE_PHCI: | |
5851 { | |
5852 dev_info_t *pdip; | |
5853 | |
5854 /* Get PHCI path and device address from user land */ | |
5855 if (vhci_ioc_get_phci_path(pioc, phci_path, mode, s)) { | |
5856 retval = EFAULT; | |
5857 break; | |
5858 } | |
5859 | |
5860 VHCI_DEBUG(6, (CE_WARN, vdip, "!vhci_ioctl: ioctl <%s> " | |
5861 "phci <%s>", s, phci_path)); | |
5862 | |
5863 /* Get the PHCI dip */ | |
5864 if ((pdip = e_ddi_hold_devi_by_path(phci_path, 0)) == NULL) { | |
5865 VHCI_DEBUG(3, (CE_WARN, NULL, "!vhci_ioctl: ioctl <%s> " | |
5866 "phci dip doesn't exist. invalid path <%s>", | |
5867 s, phci_path)); | |
5868 retval = ENXIO; | |
5869 break; | |
5870 } | |
5871 | |
5872 if (ndi_devi_unconfig(pdip, | |
5873 NDI_DEVI_REMOVE|NDI_DEVFS_CLEAN) != NDI_SUCCESS) { | |
5874 retval = EBUSY; | |
5875 } | |
5876 | |
5877 ddi_release_devi(pdip); | |
5878 break; | |
5879 } | |
5880 #endif | |
5881 } | |
5882 | |
5883 end: | |
5884 /* Free the memory allocated above */ | |
5885 if (phci_path != NULL) { | |
5886 kmem_free(phci_path, MAXPATHLEN); | |
5887 } | |
5888 if (client_path != NULL) { | |
5889 kmem_free(client_path, MAXPATHLEN); | |
5890 } | |
5891 if (paddr != NULL) { | |
5892 kmem_free(paddr, MAXNAMELEN); | |
5893 } | |
5894 return (retval); | |
5895 } | |
5896 | |
5897 /* | |
5898 * devctl IOCTL support for client device DR | |
5899 */ | |
5900 /* ARGSUSED */ | |
5901 int | |
5902 vhci_devctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, | |
5903 int *rvalp) | |
5904 { | |
5905 dev_info_t *self; | |
5906 dev_info_t *child; | |
5907 scsi_hba_tran_t *hba; | |
5908 struct devctl_iocdata *dcp; | |
5909 struct scsi_vhci *vhci; | |
5910 int rv = 0; | |
5911 int retval = 0; | |
5912 scsi_vhci_priv_t *svp; | |
5913 mdi_pathinfo_t *pip; | |
5914 | |
5915 if ((vhci = ddi_get_soft_state(vhci_softstate, | |
5916 MINOR2INST(getminor(dev)))) == NULL) | |
5917 return (ENXIO); | |
5918 | |
5919 /* | |
5920 * check if :devctl minor device has been opened | |
5921 */ | |
5922 mutex_enter(&vhci->vhci_mutex); | |
5923 if ((vhci->vhci_state & VHCI_STATE_OPEN) == 0) { | |
5924 mutex_exit(&vhci->vhci_mutex); | |
5925 return (ENXIO); | |
5926 } | |
5927 mutex_exit(&vhci->vhci_mutex); | |
5928 | |
5929 self = vhci->vhci_dip; | |
5930 hba = ddi_get_driver_private(self); | |
5931 if (hba == NULL) | |
5932 return (ENXIO); | |
5933 | |
5934 /* | |
5935 * We can use the generic implementation for these ioctls | |
5936 */ | |
5937 switch (cmd) { | |
5938 case DEVCTL_DEVICE_GETSTATE: | |
5939 case DEVCTL_DEVICE_ONLINE: | |
5940 case DEVCTL_DEVICE_OFFLINE: | |
5941 case DEVCTL_DEVICE_REMOVE: | |
5942 case DEVCTL_BUS_GETSTATE: | |
5943 return (ndi_devctl_ioctl(self, cmd, arg, mode, 0)); | |
5944 } | |
5945 | |
5946 /* | |
5947 * read devctl ioctl data | |
5948 */ | |
5949 if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) | |
5950 return (EFAULT); | |
5951 | |
5952 switch (cmd) { | |
5953 | |
5954 case DEVCTL_DEVICE_RESET: | |
5955 /* | |
5956 * lookup and hold child device | |
5957 */ | |
5958 if ((child = ndi_devi_find(self, ndi_dc_getname(dcp), | |
5959 ndi_dc_getaddr(dcp))) == NULL) { | |
5960 rv = ENXIO; | |
5961 break; | |
5962 } | |
5963 retval = mdi_select_path(child, NULL, | |
5964 (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH), | |
5965 NULL, &pip); | |
5966 if ((retval != MDI_SUCCESS) || (pip == NULL)) { | |
5967 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioctl:" | |
5968 "Unable to get a path, dip 0x%p", (void *)child)); | |
5969 rv = ENXIO; | |
5970 break; | |
5971 } | |
5972 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
5973 if (vhci_recovery_reset(svp->svp_svl, | |
5974 &svp->svp_psd->sd_address, TRUE, | |
5975 VHCI_DEPTH_TARGET) == 0) { | |
5976 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
5977 "!vhci_ioctl(pip:%p): " | |
5978 "reset failed\n", (void *)pip)); | |
5979 rv = ENXIO; | |
5980 } | |
5981 mdi_rele_path(pip); | |
5982 break; | |
5983 | |
5984 case DEVCTL_BUS_QUIESCE: | |
5985 case DEVCTL_BUS_UNQUIESCE: | |
5986 case DEVCTL_BUS_RESET: | |
5987 case DEVCTL_BUS_RESETALL: | |
5988 #ifdef DEBUG | |
5989 case DEVCTL_BUS_CONFIGURE: | |
5990 case DEVCTL_BUS_UNCONFIGURE: | |
5991 #endif | |
5992 rv = ENOTSUP; | |
5993 break; | |
5994 | |
5995 default: | |
5996 rv = ENOTTY; | |
5997 } /* end of outer switch */ | |
5998 | |
5999 ndi_dc_freehdl(dcp); | |
6000 return (rv); | |
6001 } | |
6002 | |
6003 /* | |
6004 * Routine to get the PHCI pathname from ioctl structures in userland | |
6005 */ | |
6006 /* ARGSUSED */ | |
6007 static int | |
6008 vhci_ioc_get_phci_path(sv_iocdata_t *pioc, caddr_t phci_path, | |
6009 int mode, caddr_t s) | |
6010 { | |
6011 int retval = 0; | |
6012 | |
6013 if (ddi_copyin(pioc->phci, phci_path, MAXPATHLEN, mode)) { | |
6014 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_phci: ioctl <%s> " | |
6015 "phci_path copyin failed", s)); | |
6016 retval = EFAULT; | |
6017 } | |
6018 return (retval); | |
6019 | |
6020 } | |
6021 | |
6022 | |
6023 /* | |
6024 * Routine to get the Client device pathname from ioctl structures in userland | |
6025 */ | |
6026 /* ARGSUSED */ | |
6027 static int | |
6028 vhci_ioc_get_client_path(sv_iocdata_t *pioc, caddr_t client_path, | |
6029 int mode, caddr_t s) | |
6030 { | |
6031 int retval = 0; | |
6032 | |
6033 if (ddi_copyin(pioc->client, client_path, MAXPATHLEN, mode)) { | |
6034 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_client: " | |
6035 "ioctl <%s> client_path copyin failed", s)); | |
6036 retval = EFAULT; | |
6037 } | |
6038 return (retval); | |
6039 } | |
6040 | |
6041 | |
6042 /* | |
6043 * Routine to get physical device address from ioctl structure in userland | |
6044 */ | |
6045 /* ARGSUSED */ | |
6046 static int | |
6047 vhci_ioc_get_paddr(sv_iocdata_t *pioc, caddr_t paddr, int mode, caddr_t s) | |
6048 { | |
6049 int retval = 0; | |
6050 | |
6051 if (ddi_copyin(pioc->addr, paddr, MAXNAMELEN, mode)) { | |
6052 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_get_paddr: " | |
6053 "ioctl <%s> device addr copyin failed", s)); | |
6054 retval = EFAULT; | |
6055 } | |
6056 return (retval); | |
6057 } | |
6058 | |
6059 | |
6060 /* | |
6061 * Routine to send client device pathname to userland. | |
6062 */ | |
6063 /* ARGSUSED */ | |
6064 static int | |
6065 vhci_ioc_send_client_path(caddr_t client_path, sv_iocdata_t *pioc, | |
6066 int mode, caddr_t s) | |
6067 { | |
6068 int retval = 0; | |
6069 | |
6070 if (ddi_copyout(client_path, pioc->client, MAXPATHLEN, mode)) { | |
6071 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_ioc_send_client: " | |
6072 "ioctl <%s> client_path copyout failed", s)); | |
6073 retval = EFAULT; | |
6074 } | |
6075 return (retval); | |
6076 } | |
6077 | |
6078 | |
6079 /* | |
6080 * Routine to translated dev_info pointer (dip) to device pathname. | |
6081 */ | |
6082 static void | |
6083 vhci_ioc_devi_to_path(dev_info_t *dip, caddr_t path) | |
6084 { | |
6085 (void) ddi_pathname(dip, path); | |
6086 } | |
6087 | |
6088 | |
6089 /* | |
6090 * vhci_get_phci_path_list: | |
6091 * get information about devices associated with a | |
6092 * given PHCI device. | |
6093 * | |
6094 * Return Values: | |
6095 * path information elements | |
6096 */ | |
6097 int | |
6098 vhci_get_phci_path_list(dev_info_t *pdip, sv_path_info_t *pibuf, | |
6099 uint_t num_elems) | |
6100 { | |
6101 uint_t count, done; | |
6102 mdi_pathinfo_t *pip; | |
6103 sv_path_info_t *ret_pip; | |
6104 int status; | |
6105 size_t prop_size; | |
6106 int circular; | |
6107 | |
6108 /* | |
6109 * Get the PHCI structure and retrieve the path information | |
6110 * from the GUID hash table. | |
6111 */ | |
6112 | |
6113 ret_pip = pibuf; | |
6114 count = 0; | |
6115 | |
6116 ndi_devi_enter(pdip, &circular); | |
6117 | |
6118 done = (count >= num_elems); | |
6119 pip = mdi_get_next_client_path(pdip, NULL); | |
6120 while (pip && !done) { | |
6121 mdi_pi_lock(pip); | |
6122 (void) ddi_pathname(mdi_pi_get_phci(pip), | |
6123 ret_pip->device.ret_phci); | |
6124 (void) strcpy(ret_pip->ret_addr, mdi_pi_get_addr(pip)); | |
6125 (void) mdi_pi_get_state2(pip, &ret_pip->ret_state, | |
6126 &ret_pip->ret_ext_state); | |
6127 | |
6128 status = mdi_prop_size(pip, &prop_size); | |
6129 if (status == MDI_SUCCESS && ret_pip->ret_prop.ret_buf_size) { | |
6130 *ret_pip->ret_prop.ret_buf_size = (uint_t)prop_size; | |
6131 } | |
6132 | |
6133 #ifdef DEBUG | |
6134 if (status != MDI_SUCCESS) { | |
6135 VHCI_DEBUG(2, (CE_WARN, NULL, | |
6136 "!vhci_get_phci_path_list: " | |
6137 "phci <%s>, prop size failure 0x%x", | |
6138 ret_pip->device.ret_phci, status)); | |
6139 } | |
6140 #endif /* DEBUG */ | |
6141 | |
6142 | |
6143 if (status == MDI_SUCCESS && ret_pip->ret_prop.buf && | |
6144 prop_size && ret_pip->ret_prop.buf_size >= prop_size) { | |
6145 status = mdi_prop_pack(pip, | |
6146 &ret_pip->ret_prop.buf, | |
6147 ret_pip->ret_prop.buf_size); | |
6148 | |
6149 #ifdef DEBUG | |
6150 if (status != MDI_SUCCESS) { | |
6151 VHCI_DEBUG(2, (CE_WARN, NULL, | |
6152 "!vhci_get_phci_path_list: " | |
6153 "phci <%s>, prop pack failure 0x%x", | |
6154 ret_pip->device.ret_phci, status)); | |
6155 } | |
6156 #endif /* DEBUG */ | |
6157 } | |
6158 | |
6159 mdi_pi_unlock(pip); | |
6160 pip = mdi_get_next_client_path(pdip, pip); | |
6161 ret_pip++; | |
6162 count++; | |
6163 done = (count >= num_elems); | |
6164 } | |
6165 | |
6166 ndi_devi_exit(pdip, circular); | |
6167 | |
6168 return (MDI_SUCCESS); | |
6169 } | |
6170 | |
6171 | |
6172 /* | |
6173 * vhci_get_client_path_list: | |
6174 * get information about various paths associated with a | |
6175 * given client device. | |
6176 * | |
6177 * Return Values: | |
6178 * path information elements | |
6179 */ | |
6180 int | |
6181 vhci_get_client_path_list(dev_info_t *cdip, sv_path_info_t *pibuf, | |
6182 uint_t num_elems) | |
6183 { | |
6184 uint_t count, done; | |
6185 mdi_pathinfo_t *pip; | |
6186 sv_path_info_t *ret_pip; | |
6187 int status; | |
6188 size_t prop_size; | |
6189 int circular; | |
6190 | |
6191 ret_pip = pibuf; | |
6192 count = 0; | |
6193 | |
6194 ndi_devi_enter(cdip, &circular); | |
6195 | |
6196 done = (count >= num_elems); | |
6197 pip = mdi_get_next_phci_path(cdip, NULL); | |
6198 while (pip && !done) { | |
6199 mdi_pi_lock(pip); | |
6200 (void) ddi_pathname(mdi_pi_get_phci(pip), | |
6201 ret_pip->device.ret_phci); | |
6202 (void) strcpy(ret_pip->ret_addr, mdi_pi_get_addr(pip)); | |
6203 (void) mdi_pi_get_state2(pip, &ret_pip->ret_state, | |
6204 &ret_pip->ret_ext_state); | |
6205 | |
6206 status = mdi_prop_size(pip, &prop_size); | |
6207 if (status == MDI_SUCCESS && ret_pip->ret_prop.ret_buf_size) { | |
6208 *ret_pip->ret_prop.ret_buf_size = (uint_t)prop_size; | |
6209 } | |
6210 | |
6211 #ifdef DEBUG | |
6212 if (status != MDI_SUCCESS) { | |
6213 VHCI_DEBUG(2, (CE_WARN, NULL, | |
6214 "!vhci_get_client_path_list: " | |
6215 "phci <%s>, prop size failure 0x%x", | |
6216 ret_pip->device.ret_phci, status)); | |
6217 } | |
6218 #endif /* DEBUG */ | |
6219 | |
6220 | |
6221 if (status == MDI_SUCCESS && ret_pip->ret_prop.buf && | |
6222 prop_size && ret_pip->ret_prop.buf_size >= prop_size) { | |
6223 status = mdi_prop_pack(pip, | |
6224 &ret_pip->ret_prop.buf, | |
6225 ret_pip->ret_prop.buf_size); | |
6226 | |
6227 #ifdef DEBUG | |
6228 if (status != MDI_SUCCESS) { | |
6229 VHCI_DEBUG(2, (CE_WARN, NULL, | |
6230 "!vhci_get_client_path_list: " | |
6231 "phci <%s>, prop pack failure 0x%x", | |
6232 ret_pip->device.ret_phci, status)); | |
6233 } | |
6234 #endif /* DEBUG */ | |
6235 } | |
6236 | |
6237 mdi_pi_unlock(pip); | |
6238 pip = mdi_get_next_phci_path(cdip, pip); | |
6239 ret_pip++; | |
6240 count++; | |
6241 done = (count >= num_elems); | |
6242 } | |
6243 | |
6244 ndi_devi_exit(cdip, circular); | |
6245 | |
6246 return (MDI_SUCCESS); | |
6247 } | |
6248 | |
6249 | |
6250 /* | |
6251 * Routine to get ioctl argument structure from userland. | |
6252 */ | |
6253 /* ARGSUSED */ | |
6254 static int | |
6255 vhci_get_iocdata(const void *data, sv_iocdata_t *pioc, int mode, caddr_t s) | |
6256 { | |
6257 int retval = 0; | |
6258 | |
6259 #ifdef _MULTI_DATAMODEL | |
6260 switch (ddi_model_convert_from(mode & FMODELS)) { | |
6261 case DDI_MODEL_ILP32: | |
6262 { | |
6263 sv_iocdata32_t ioc32; | |
6264 | |
6265 if (ddi_copyin(data, &ioc32, sizeof (ioc32), mode)) { | |
6266 retval = EFAULT; | |
6267 break; | |
6268 } | |
6269 pioc->client = (caddr_t)(uintptr_t)ioc32.client; | |
6270 pioc->phci = (caddr_t)(uintptr_t)ioc32.phci; | |
6271 pioc->addr = (caddr_t)(uintptr_t)ioc32.addr; | |
6272 pioc->buf_elem = (uint_t)ioc32.buf_elem; | |
6273 pioc->ret_buf = (sv_path_info_t *)(uintptr_t)ioc32.ret_buf; | |
6274 pioc->ret_elem = (uint_t *)(uintptr_t)ioc32.ret_elem; | |
6275 break; | |
6276 } | |
6277 | |
6278 case DDI_MODEL_NONE: | |
6279 if (ddi_copyin(data, pioc, sizeof (*pioc), mode)) { | |
6280 retval = EFAULT; | |
6281 break; | |
6282 } | |
6283 break; | |
6284 } | |
6285 #else /* _MULTI_DATAMODEL */ | |
6286 if (ddi_copyin(data, pioc, sizeof (*pioc), mode)) { | |
6287 retval = EFAULT; | |
6288 } | |
6289 #endif /* _MULTI_DATAMODEL */ | |
6290 | |
6291 #ifdef DEBUG | |
6292 if (retval) { | |
6293 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: cmd <%s> " | |
6294 "iocdata copyin failed", s)); | |
6295 } | |
6296 #endif | |
6297 | |
6298 return (retval); | |
6299 } | |
6300 | |
6301 | |
6302 /* | |
6303 * Routine to get the ioctl argument for ioctl causing controller switchover. | |
6304 */ | |
6305 /* ARGSUSED */ | |
6306 static int | |
6307 vhci_get_iocswitchdata(const void *data, sv_switch_to_cntlr_iocdata_t *piocsc, | |
6308 int mode, caddr_t s) | |
6309 { | |
6310 int retval = 0; | |
6311 | |
6312 #ifdef _MULTI_DATAMODEL | |
6313 switch (ddi_model_convert_from(mode & FMODELS)) { | |
6314 case DDI_MODEL_ILP32: | |
6315 { | |
6316 sv_switch_to_cntlr_iocdata32_t ioc32; | |
6317 | |
6318 if (ddi_copyin(data, &ioc32, sizeof (ioc32), mode)) { | |
6319 retval = EFAULT; | |
6320 break; | |
6321 } | |
6322 piocsc->client = (caddr_t)(uintptr_t)ioc32.client; | |
6323 piocsc->class = (caddr_t)(uintptr_t)ioc32.class; | |
6324 break; | |
6325 } | |
6326 | |
6327 case DDI_MODEL_NONE: | |
6328 if (ddi_copyin(data, piocsc, sizeof (*piocsc), mode)) { | |
6329 retval = EFAULT; | |
6330 } | |
6331 break; | |
6332 } | |
6333 #else /* _MULTI_DATAMODEL */ | |
6334 if (ddi_copyin(data, piocsc, sizeof (*piocsc), mode)) { | |
6335 retval = EFAULT; | |
6336 } | |
6337 #endif /* _MULTI_DATAMODEL */ | |
6338 | |
6339 #ifdef DEBUG | |
6340 if (retval) { | |
6341 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: cmd <%s> " | |
6342 "switch_to_cntlr_iocdata copyin failed", s)); | |
6343 } | |
6344 #endif | |
6345 | |
6346 return (retval); | |
6347 } | |
6348 | |
6349 | |
6350 /* | |
6351 * Routine to allocate memory for the path information structures. | |
6352 * It allocates two chunks of memory - one for keeping userland | |
6353 * pointers/values for path information and path properties, second for | |
6354 * keeping allocating kernel memory for path properties. These path | |
6355 * properties are finally copied to userland. | |
6356 */ | |
6357 /* ARGSUSED */ | |
6358 static int | |
6359 vhci_ioc_alloc_pathinfo(sv_path_info_t **upibuf, sv_path_info_t **kpibuf, | |
6360 uint_t num_paths, sv_iocdata_t *pioc, int mode, caddr_t s) | |
6361 { | |
6362 sv_path_info_t *pi; | |
6363 uint_t bufsize; | |
6364 int retval = 0; | |
6365 int index; | |
6366 | |
6367 /* Allocate memory */ | |
6368 *upibuf = (sv_path_info_t *) | |
6369 kmem_zalloc(sizeof (sv_path_info_t) * num_paths, KM_SLEEP); | |
6370 ASSERT(*upibuf != NULL); | |
6371 *kpibuf = (sv_path_info_t *) | |
6372 kmem_zalloc(sizeof (sv_path_info_t) * num_paths, KM_SLEEP); | |
6373 ASSERT(*kpibuf != NULL); | |
6374 | |
6375 /* | |
6376 * Get the path info structure from the user space. | |
6377 * We are interested in the following fields: | |
6378 * - user size of buffer for per path properties. | |
6379 * - user address of buffer for path info properties. | |
6380 * - user pointer for returning actual buffer size | |
6381 * Keep these fields in the 'upibuf' structures. | |
6382 * Allocate buffer for per path info properties in kernel | |
6383 * structure ('kpibuf'). | |
6384 * Size of these buffers will be equal to the size of buffers | |
6385 * in the user space. | |
6386 */ | |
6387 #ifdef _MULTI_DATAMODEL | |
6388 switch (ddi_model_convert_from(mode & FMODELS)) { | |
6389 case DDI_MODEL_ILP32: | |
6390 { | |
6391 sv_path_info32_t *src; | |
6392 sv_path_info32_t pi32; | |
6393 | |
6394 src = (sv_path_info32_t *)pioc->ret_buf; | |
6395 pi = (sv_path_info_t *)*upibuf; | |
6396 for (index = 0; index < num_paths; index++, src++, pi++) { | |
6397 if (ddi_copyin(src, &pi32, sizeof (pi32), mode)) { | |
6398 retval = EFAULT; | |
6399 break; | |
6400 } | |
6401 | |
6402 pi->ret_prop.buf_size = | |
6403 (uint_t)pi32.ret_prop.buf_size; | |
6404 pi->ret_prop.ret_buf_size = | |
6405 (uint_t *)(uintptr_t)pi32.ret_prop.ret_buf_size; | |
6406 pi->ret_prop.buf = | |
6407 (caddr_t)(uintptr_t)pi32.ret_prop.buf; | |
6408 } | |
6409 break; | |
6410 } | |
6411 | |
6412 case DDI_MODEL_NONE: | |
6413 if (ddi_copyin(pioc->ret_buf, *upibuf, | |
6414 sizeof (sv_path_info_t) * num_paths, mode)) { | |
6415 retval = EFAULT; | |
6416 } | |
6417 break; | |
6418 } | |
6419 #else /* _MULTI_DATAMODEL */ | |
6420 if (ddi_copyin(pioc->ret_buf, *upibuf, | |
6421 sizeof (sv_path_info_t) * num_paths, mode)) { | |
6422 retval = EFAULT; | |
6423 } | |
6424 #endif /* _MULTI_DATAMODEL */ | |
6425 | |
6426 if (retval != 0) { | |
6427 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_alloc_path_info: " | |
6428 "ioctl <%s> normal: path_info copyin failed", s)); | |
6429 kmem_free(*upibuf, sizeof (sv_path_info_t) * num_paths); | |
6430 kmem_free(*kpibuf, sizeof (sv_path_info_t) * num_paths); | |
6431 *upibuf = NULL; | |
6432 *kpibuf = NULL; | |
6433 return (retval); | |
6434 } | |
6435 | |
6436 /* | |
6437 * Allocate memory for per path properties. | |
6438 */ | |
6439 for (index = 0, pi = *kpibuf; index < num_paths; index++, pi++) { | |
6440 bufsize = (*upibuf)[index].ret_prop.buf_size; | |
6441 | |
6442 if (bufsize && bufsize <= SV_PROP_MAX_BUF_SIZE) { | |
6443 pi->ret_prop.buf_size = bufsize; | |
6444 pi->ret_prop.buf = (caddr_t) | |
6445 kmem_zalloc(bufsize, KM_SLEEP); | |
6446 ASSERT(pi->ret_prop.buf != NULL); | |
6447 } else { | |
6448 pi->ret_prop.buf_size = 0; | |
6449 pi->ret_prop.buf = NULL; | |
6450 } | |
6451 | |
6452 if ((*upibuf)[index].ret_prop.ret_buf_size != NULL) { | |
6453 pi->ret_prop.ret_buf_size = (uint_t *)kmem_zalloc( | |
6454 sizeof (*pi->ret_prop.ret_buf_size), KM_SLEEP); | |
6455 ASSERT(pi->ret_prop.ret_buf_size != NULL); | |
6456 } else { | |
6457 pi->ret_prop.ret_buf_size = NULL; | |
6458 } | |
6459 } | |
6460 | |
6461 return (0); | |
6462 } | |
6463 | |
6464 | |
6465 /* | |
6466 * Routine to free memory for the path information structures. | |
6467 * This is the memory which was allocated earlier. | |
6468 */ | |
6469 /* ARGSUSED */ | |
6470 static void | |
6471 vhci_ioc_free_pathinfo(sv_path_info_t *upibuf, sv_path_info_t *kpibuf, | |
6472 uint_t num_paths) | |
6473 { | |
6474 sv_path_info_t *pi; | |
6475 int index; | |
6476 | |
6477 /* Free memory for per path properties */ | |
6478 for (index = 0, pi = kpibuf; index < num_paths; index++, pi++) { | |
6479 if (pi->ret_prop.ret_buf_size != NULL) { | |
6480 kmem_free(pi->ret_prop.ret_buf_size, | |
6481 sizeof (*pi->ret_prop.ret_buf_size)); | |
6482 } | |
6483 | |
6484 if (pi->ret_prop.buf != NULL) { | |
6485 kmem_free(pi->ret_prop.buf, pi->ret_prop.buf_size); | |
6486 } | |
6487 } | |
6488 | |
6489 /* Free memory for path info structures */ | |
6490 kmem_free(upibuf, sizeof (sv_path_info_t) * num_paths); | |
6491 kmem_free(kpibuf, sizeof (sv_path_info_t) * num_paths); | |
6492 } | |
6493 | |
6494 | |
6495 /* | |
6496 * Routine to copy path information and path properties to userland. | |
6497 */ | |
6498 /* ARGSUSED */ | |
6499 static int | |
6500 vhci_ioc_send_pathinfo(sv_path_info_t *upibuf, sv_path_info_t *kpibuf, | |
6501 uint_t num_paths, sv_iocdata_t *pioc, int mode, caddr_t s) | |
6502 { | |
6503 int retval = 0, index; | |
6504 sv_path_info_t *upi_ptr; | |
6505 sv_path_info32_t *upi32_ptr; | |
6506 | |
6507 #ifdef _MULTI_DATAMODEL | |
6508 switch (ddi_model_convert_from(mode & FMODELS)) { | |
6509 case DDI_MODEL_ILP32: | |
6510 goto copy_32bit; | |
6511 | |
6512 case DDI_MODEL_NONE: | |
6513 goto copy_normal; | |
6514 } | |
6515 #else /* _MULTI_DATAMODEL */ | |
6516 | |
6517 goto copy_normal; | |
6518 | |
6519 #endif /* _MULTI_DATAMODEL */ | |
6520 | |
6521 copy_normal: | |
6522 | |
6523 /* | |
6524 * Copy path information and path properties to user land. | |
6525 * Pointer fields inside the path property structure were | |
6526 * saved in the 'upibuf' structure earlier. | |
6527 */ | |
6528 upi_ptr = pioc->ret_buf; | |
6529 for (index = 0; index < num_paths; index++) { | |
6530 if (ddi_copyout(kpibuf[index].device.ret_ct, | |
6531 upi_ptr[index].device.ret_ct, MAXPATHLEN, mode)) { | |
6532 retval = EFAULT; | |
6533 break; | |
6534 } | |
6535 | |
6536 if (ddi_copyout(kpibuf[index].ret_addr, | |
6537 upi_ptr[index].ret_addr, MAXNAMELEN, mode)) { | |
6538 retval = EFAULT; | |
6539 break; | |
6540 } | |
6541 | |
6542 if (ddi_copyout(&kpibuf[index].ret_state, | |
6543 &upi_ptr[index].ret_state, sizeof (kpibuf[index].ret_state), | |
6544 mode)) { | |
6545 retval = EFAULT; | |
6546 break; | |
6547 } | |
6548 | |
6549 if (ddi_copyout(&kpibuf[index].ret_ext_state, | |
6550 &upi_ptr[index].ret_ext_state, | |
6551 sizeof (kpibuf[index].ret_ext_state), mode)) { | |
6552 retval = EFAULT; | |
6553 break; | |
6554 } | |
6555 | |
6556 if ((kpibuf[index].ret_prop.ret_buf_size != NULL) && | |
6557 ddi_copyout(kpibuf[index].ret_prop.ret_buf_size, | |
6558 upibuf[index].ret_prop.ret_buf_size, | |
6559 sizeof (*upibuf[index].ret_prop.ret_buf_size), mode)) { | |
6560 retval = EFAULT; | |
6561 break; | |
6562 } | |
6563 | |
6564 if ((kpibuf[index].ret_prop.buf != NULL) && | |
6565 ddi_copyout(kpibuf[index].ret_prop.buf, | |
6566 upibuf[index].ret_prop.buf, | |
6567 upibuf[index].ret_prop.buf_size, mode)) { | |
6568 retval = EFAULT; | |
6569 break; | |
6570 } | |
6571 } | |
6572 | |
6573 #ifdef DEBUG | |
6574 if (retval) { | |
6575 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: ioctl <%s> " | |
6576 "normal: path_info copyout failed", s)); | |
6577 } | |
6578 #endif | |
6579 | |
6580 return (retval); | |
6581 | |
6582 copy_32bit: | |
6583 /* | |
6584 * Copy path information and path properties to user land. | |
6585 * Pointer fields inside the path property structure were | |
6586 * saved in the 'upibuf' structure earlier. | |
6587 */ | |
6588 upi32_ptr = (sv_path_info32_t *)pioc->ret_buf; | |
6589 for (index = 0; index < num_paths; index++) { | |
6590 if (ddi_copyout(kpibuf[index].device.ret_ct, | |
6591 upi32_ptr[index].device.ret_ct, MAXPATHLEN, mode)) { | |
6592 retval = EFAULT; | |
6593 break; | |
6594 } | |
6595 | |
6596 if (ddi_copyout(kpibuf[index].ret_addr, | |
6597 upi32_ptr[index].ret_addr, MAXNAMELEN, mode)) { | |
6598 retval = EFAULT; | |
6599 break; | |
6600 } | |
6601 | |
6602 if (ddi_copyout(&kpibuf[index].ret_state, | |
6603 &upi32_ptr[index].ret_state, | |
6604 sizeof (kpibuf[index].ret_state), mode)) { | |
6605 retval = EFAULT; | |
6606 break; | |
6607 } | |
6608 | |
6609 if (ddi_copyout(&kpibuf[index].ret_ext_state, | |
6610 &upi32_ptr[index].ret_ext_state, | |
6611 sizeof (kpibuf[index].ret_ext_state), mode)) { | |
6612 retval = EFAULT; | |
6613 break; | |
6614 } | |
6615 if ((kpibuf[index].ret_prop.ret_buf_size != NULL) && | |
6616 ddi_copyout(kpibuf[index].ret_prop.ret_buf_size, | |
6617 upibuf[index].ret_prop.ret_buf_size, | |
6618 sizeof (*upibuf[index].ret_prop.ret_buf_size), mode)) { | |
6619 retval = EFAULT; | |
6620 break; | |
6621 } | |
6622 | |
6623 if ((kpibuf[index].ret_prop.buf != NULL) && | |
6624 ddi_copyout(kpibuf[index].ret_prop.buf, | |
6625 upibuf[index].ret_prop.buf, | |
6626 upibuf[index].ret_prop.buf_size, mode)) { | |
6627 retval = EFAULT; | |
6628 break; | |
6629 } | |
6630 } | |
6631 | |
6632 #ifdef DEBUG | |
6633 if (retval) { | |
6634 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_get_ioc: ioctl <%s> " | |
6635 "normal: path_info copyout failed", s)); | |
6636 } | |
6637 #endif | |
6638 | |
6639 return (retval); | |
6640 } | |
6641 | |
6642 | |
6643 /* | |
6644 * vhci_failover() | |
6645 * This routine expects VHCI_HOLD_LUN before being invoked. It can be invoked | |
6646 * as MDI_FAILOVER_ASYNC or MDI_FAILOVER_SYNC. For Asynchronous failovers | |
6647 * this routine shall VHCI_RELEASE_LUN on exiting. For synchronous failovers | |
6648 * it is the callers responsibility to release lun. | |
6649 */ | |
6650 | |
6651 /* ARGSUSED */ | |
6652 static int | |
6653 vhci_failover(dev_info_t *vdip, dev_info_t *cdip, int flags) | |
6654 { | |
6655 char *guid; | |
6656 scsi_vhci_lun_t *vlun = NULL; | |
6657 struct scsi_vhci *vhci; | |
6658 mdi_pathinfo_t *pip, *npip; | |
6659 char *s_pclass, *pclass1, *pclass2, *pclass; | |
6660 char active_pclass_copy[255], *active_pclass_ptr; | |
6661 char *ptr1, *ptr2; | |
6662 mdi_pathinfo_state_t pi_state; | |
6663 uint32_t pi_ext_state; | |
6664 scsi_vhci_priv_t *svp; | |
6665 struct scsi_device *sd; | |
6666 struct scsi_failover_ops *sfo; | |
6667 int sps; /* mdi_select_path() status */ | |
6668 int activation_done = 0; | |
6669 int rval, retval = MDI_FAILURE; | |
6670 int reserve_pending, check_condition, UA_condition; | |
6671 struct scsi_pkt *pkt; | |
6672 struct buf *bp; | |
6673 | |
6674 vhci = ddi_get_soft_state(vhci_softstate, ddi_get_instance(vdip)); | |
6675 sd = ddi_get_driver_private(cdip); | |
6676 vlun = ADDR2VLUN(&sd->sd_address); | |
6677 ASSERT(vlun != 0); | |
6678 ASSERT(VHCI_LUN_IS_HELD(vlun)); | |
6679 guid = vlun->svl_lun_wwn; | |
6680 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(1): guid %s\n", guid)); | |
6681 vhci_log(CE_NOTE, vdip, "!Initiating failover for device %s " | |
6682 "(GUID %s)", ddi_node_name(cdip), guid); | |
6683 | |
6684 /* | |
6685 * Lets maintain a local copy of the vlun->svl_active_pclass | |
6686 * for the rest of the processing. Accessing the field | |
6687 * directly in the loop below causes loop logic to break | |
6688 * especially when the field gets updated by other threads | |
6689 * update path status etc and causes 'paths are not currently | |
6690 * available' condition to be declared prematurely. | |
6691 */ | |
6692 mutex_enter(&vlun->svl_mutex); | |
6693 if (vlun->svl_active_pclass != NULL) { | |
6694 (void) strlcpy(active_pclass_copy, vlun->svl_active_pclass, | |
6695 sizeof (active_pclass_copy)); | |
6696 active_pclass_ptr = &active_pclass_copy[0]; | |
6697 mutex_exit(&vlun->svl_mutex); | |
6698 if (vhci_quiesce_paths(vdip, cdip, vlun, guid, | |
6699 active_pclass_ptr) != 0) { | |
6700 retval = MDI_FAILURE; | |
6701 } | |
6702 } else { | |
6703 /* | |
6704 * can happen only when the available path to device | |
6705 * discovered is a STANDBY path. | |
6706 */ | |
6707 mutex_exit(&vlun->svl_mutex); | |
6708 active_pclass_copy[0] = '\0'; | |
6709 active_pclass_ptr = NULL; | |
6710 } | |
6711 | |
6712 sfo = vlun->svl_fops; | |
6713 ASSERT(sfo != NULL); | |
6714 pclass1 = s_pclass = active_pclass_ptr; | |
6715 VHCI_DEBUG(1, (CE_NOTE, NULL, "!(%s)failing over from %s\n", guid, | |
6716 (s_pclass == NULL ? "<none>" : s_pclass))); | |
6717 | |
6718 next_pathclass: | |
6719 | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6720 rval = sfo->sfo_pathclass_next(pclass1, &pclass2, |
4851 | 6721 vlun->svl_fops_ctpriv); |
6722 if (rval == ENOENT) { | |
6723 if (s_pclass == NULL) { | |
6724 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(4)(%s): " | |
6725 "failed, no more pathclasses\n", guid)); | |
6726 goto done; | |
6727 } else { | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6728 (void) sfo->sfo_pathclass_next(NULL, &pclass2, |
4851 | 6729 vlun->svl_fops_ctpriv); |
6730 } | |
6731 } else if (rval == EINVAL) { | |
6732 vhci_log(CE_NOTE, vdip, "!Failover operation failed for " | |
6733 "device %s (GUID %s): Invalid path-class %s", | |
6734 ddi_node_name(cdip), guid, | |
6735 ((pclass1 == NULL) ? "<none>" : pclass1)); | |
6736 goto done; | |
6737 } | |
6738 if ((s_pclass != NULL) && (strcmp(pclass2, s_pclass) == 0)) { | |
6739 /* | |
6740 * paths are not currently available | |
6741 */ | |
6742 vhci_log(CE_NOTE, vdip, "!Failover path currently unavailable" | |
6743 " for device %s (GUID %s)", | |
6744 ddi_node_name(cdip), guid); | |
6745 goto done; | |
6746 } | |
6747 pip = npip = NULL; | |
6748 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(5.2)(%s): considering " | |
6749 "%s as failover destination\n", guid, pclass2)); | |
6750 sps = mdi_select_path(cdip, NULL, MDI_SELECT_STANDBY_PATH, NULL, &npip); | |
6751 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
6752 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(%s): no " | |
6753 "STANDBY paths found (status:%x)!\n", guid, sps)); | |
6754 pclass1 = pclass2; | |
6755 goto next_pathclass; | |
6756 } | |
6757 do { | |
6758 pclass = NULL; | |
6759 if ((mdi_prop_lookup_string(npip, "path-class", | |
6760 &pclass) != MDI_SUCCESS) || (strcmp(pclass2, | |
6761 pclass) != 0)) { | |
6762 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
6763 "!vhci_failover(5.5)(%s): skipping path " | |
6764 "%p(%s)...\n", guid, (void *)npip, pclass)); | |
6765 pip = npip; | |
6766 sps = mdi_select_path(cdip, NULL, | |
6767 MDI_SELECT_STANDBY_PATH, pip, &npip); | |
6768 mdi_rele_path(pip); | |
6769 (void) mdi_prop_free(pclass); | |
6770 continue; | |
6771 } | |
6772 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(npip); | |
6773 | |
6774 /* | |
6775 * Issue READ at non-zer block on this STANDBY path. | |
6776 * Purple returns | |
6777 * 1. RESERVATION_CONFLICT if reservation is pending | |
6778 * 2. POR check condition if it reset happened. | |
6779 * 2. failover Check Conditions if one is already in progress. | |
6780 */ | |
6781 reserve_pending = 0; | |
6782 check_condition = 0; | |
6783 UA_condition = 0; | |
6784 | |
6785 bp = scsi_alloc_consistent_buf(&svp->svp_psd->sd_address, | |
6786 (struct buf *)NULL, DEV_BSIZE, B_READ, NULL, NULL); | |
6787 if (!bp) { | |
6788 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
6789 "vhci_failover !No resources (buf)\n")); | |
6790 mdi_rele_path(npip); | |
6791 goto done; | |
6792 } | |
6793 pkt = scsi_init_pkt(&svp->svp_psd->sd_address, NULL, bp, | |
6794 CDB_GROUP1, sizeof (struct scsi_arq_status), 0, | |
6795 PKT_CONSISTENT, NULL, NULL); | |
6796 if (pkt) { | |
6797 (void) scsi_setup_cdb((union scsi_cdb *)(uintptr_t) | |
6798 pkt->pkt_cdbp, SCMD_READ, 1, 1, 0); | |
6799 pkt->pkt_flags = FLAG_NOINTR; | |
6800 check_path_again: | |
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
6801 pkt->pkt_path_instance = mdi_pi_get_path_instance(npip); |
4851 | 6802 pkt->pkt_time = 3*30; |
6640
c92ca9b95b9c
PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
cth
parents:
6042
diff
changeset
|
6803 |
4851 | 6804 if (scsi_transport(pkt) == TRAN_ACCEPT) { |
6805 switch (pkt->pkt_reason) { | |
6806 case CMD_CMPLT: | |
6807 switch (SCBP_C(pkt)) { | |
6808 case STATUS_GOOD: | |
6809 /* Already failed over */ | |
6810 activation_done = 1; | |
6811 break; | |
6812 case STATUS_RESERVATION_CONFLICT: | |
6813 reserve_pending = 1; | |
6814 break; | |
6815 case STATUS_CHECK: | |
6816 check_condition = 1; | |
6817 break; | |
6818 } | |
6819 } | |
6820 } | |
6821 if (check_condition && | |
6822 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
6823 struct scsi_extended_sense *sns = | |
6824 &(((struct scsi_arq_status *)(uintptr_t) | |
6825 (pkt->pkt_scbp))->sts_sensedata); | |
6826 if (sns->es_key == KEY_UNIT_ATTENTION && | |
6827 sns->es_add_code == 0x29) { | |
6828 /* Already failed over */ | |
6829 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
6830 "!vhci_failover(7)(%s): " | |
6831 "path 0x%p POR UA condition\n", | |
6832 guid, (void *)npip)); | |
6833 if (UA_condition == 0) { | |
6834 UA_condition = 1; | |
6835 goto check_path_again; | |
6836 } | |
6837 } else { | |
6838 activation_done = 0; | |
6839 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
6840 "!vhci_failover(%s): path 0x%p " | |
6841 "unhandled chkcond %x %x %x\n", | |
6842 guid, (void *)npip, sns->es_key, | |
6843 sns->es_add_code, | |
6844 sns->es_qual_code)); | |
6845 } | |
6846 } | |
6847 scsi_destroy_pkt(pkt); | |
6848 } | |
6849 scsi_free_consistent_buf(bp); | |
6850 | |
6851 if (activation_done) { | |
6852 mdi_rele_path(npip); | |
6853 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(7)(%s): " | |
6854 "path 0x%p already failedover\n", guid, | |
6855 (void *)npip)); | |
6856 break; | |
6857 } | |
6858 if (reserve_pending && (vlun->svl_xlf_capable == 0)) { | |
6859 (void) vhci_recovery_reset(vlun, | |
6860 &svp->svp_psd->sd_address, | |
6861 FALSE, VHCI_DEPTH_ALL); | |
6862 } | |
6863 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(6)(%s): " | |
6864 "activating path 0x%p(psd:%p)\n", guid, (void *)npip, | |
6865 (void *)svp->svp_psd)); | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6866 if (sfo->sfo_path_activate(svp->svp_psd, pclass2, |
4851 | 6867 vlun->svl_fops_ctpriv) == 0) { |
6868 activation_done = 1; | |
6869 mdi_rele_path(npip); | |
6870 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(7)(%s): " | |
6871 "path 0x%p successfully activated\n", guid, | |
6872 (void *)npip)); | |
6873 break; | |
6874 } | |
6875 pip = npip; | |
6876 sps = mdi_select_path(cdip, NULL, MDI_SELECT_STANDBY_PATH, | |
6877 pip, &npip); | |
6878 mdi_rele_path(pip); | |
6879 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
6880 if (activation_done == 0) { | |
6881 pclass1 = pclass2; | |
6882 goto next_pathclass; | |
6883 } | |
6884 | |
6885 /* | |
6886 * if we are here, we have succeeded in activating path npip of | |
6887 * pathclass pclass2; let us validate all paths of pclass2 by | |
6888 * "ping"-ing each one and mark the good ones ONLINE | |
6889 * Also, set the state of the paths belonging to the previously | |
6890 * active pathclass to STANDBY | |
6891 */ | |
6892 pip = npip = NULL; | |
6893 sps = mdi_select_path(cdip, NULL, (MDI_SELECT_ONLINE_PATH | | |
6894 MDI_SELECT_STANDBY_PATH | MDI_SELECT_USER_DISABLE_PATH), | |
6895 NULL, &npip); | |
6896 if (npip == NULL || sps != MDI_SUCCESS) { | |
6897 VHCI_DEBUG(1, (CE_NOTE, NULL, "!Failover operation failed for " | |
6898 "device %s (GUID %s): paths may be busy\n", | |
6899 ddi_node_name(cdip), guid)); | |
6900 goto done; | |
6901 } | |
6902 do { | |
6903 (void) mdi_pi_get_state2(npip, &pi_state, &pi_ext_state); | |
6904 if (mdi_prop_lookup_string(npip, "path-class", &pclass) | |
6905 != MDI_SUCCESS) { | |
6906 pip = npip; | |
6907 sps = mdi_select_path(cdip, NULL, | |
6908 (MDI_SELECT_ONLINE_PATH | | |
6909 MDI_SELECT_STANDBY_PATH | | |
6910 MDI_SELECT_USER_DISABLE_PATH), | |
6911 pip, &npip); | |
6912 mdi_rele_path(pip); | |
6913 continue; | |
6914 } | |
6915 if (strcmp(pclass, pclass2) == 0) { | |
6916 if (pi_state == MDI_PATHINFO_STATE_STANDBY) { | |
6917 svp = (scsi_vhci_priv_t *) | |
6918 mdi_pi_get_vhci_private(npip); | |
6919 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
6920 "!vhci_failover(8)(%s): " | |
6921 "pinging path 0x%p\n", | |
6922 guid, (void *)npip)); | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
6923 if (sfo->sfo_path_ping(svp->svp_psd, |
4851 | 6924 vlun->svl_fops_ctpriv) == 1) { |
6925 mdi_pi_set_state(npip, | |
6926 MDI_PATHINFO_STATE_ONLINE); | |
6927 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
6928 "!vhci_failover(9)(%s): " | |
6929 "path 0x%p ping successful, " | |
6930 "marked online\n", guid, | |
6931 (void *)npip)); | |
6932 MDI_PI_ERRSTAT(npip, MDI_PI_FAILTO); | |
6933 } | |
6934 } | |
6935 } else if ((s_pclass != NULL) && (strcmp(pclass, s_pclass) | |
6936 == 0)) { | |
6937 if (pi_state == MDI_PATHINFO_STATE_ONLINE) { | |
6938 mdi_pi_set_state(npip, | |
6939 MDI_PATHINFO_STATE_STANDBY); | |
6940 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
6941 "!vhci_failover(10)(%s): path 0x%p marked " | |
6942 "STANDBY\n", guid, (void *)npip)); | |
6943 MDI_PI_ERRSTAT(npip, MDI_PI_FAILFROM); | |
6944 } | |
6945 } | |
6946 (void) mdi_prop_free(pclass); | |
6947 pip = npip; | |
6948 sps = mdi_select_path(cdip, NULL, (MDI_SELECT_ONLINE_PATH | | |
6949 MDI_SELECT_STANDBY_PATH|MDI_SELECT_USER_DISABLE_PATH), | |
6950 pip, &npip); | |
6951 mdi_rele_path(pip); | |
6952 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
6953 | |
6954 /* | |
6955 * Update the AccessState of related MP-API TPGs | |
6956 */ | |
6957 (void) vhci_mpapi_update_tpg_acc_state_for_lu(vhci, vlun); | |
6958 | |
6959 vhci_log(CE_NOTE, vdip, "!Failover operation completed successfully " | |
6960 "for device %s (GUID %s): failed over from %s to %s", | |
6961 ddi_node_name(cdip), guid, ((s_pclass == NULL) ? "<none>" : | |
6962 s_pclass), pclass2); | |
6963 ptr1 = kmem_alloc(strlen(pclass2)+1, KM_SLEEP); | |
6964 (void) strlcpy(ptr1, pclass2, (strlen(pclass2)+1)); | |
6965 mutex_enter(&vlun->svl_mutex); | |
6966 ptr2 = vlun->svl_active_pclass; | |
6967 vlun->svl_active_pclass = ptr1; | |
6968 mutex_exit(&vlun->svl_mutex); | |
6969 if (ptr2) { | |
6970 kmem_free(ptr2, strlen(ptr2)+1); | |
6971 } | |
6972 mutex_enter(&vhci->vhci_mutex); | |
6973 scsi_hba_reset_notify_callback(&vhci->vhci_mutex, | |
6974 &vhci->vhci_reset_notify_listf); | |
6975 /* All reservations are cleared upon these resets. */ | |
6976 vlun->svl_flags &= ~VLUN_RESERVE_ACTIVE_FLG; | |
6977 mutex_exit(&vhci->vhci_mutex); | |
6978 VHCI_DEBUG(1, (CE_NOTE, NULL, "!vhci_failover(11): DONE! Active " | |
6979 "pathclass for %s is now %s\n", guid, pclass2)); | |
6980 retval = MDI_SUCCESS; | |
6981 | |
6982 done: | |
6983 if (flags == MDI_FAILOVER_ASYNC) { | |
6984 VHCI_RELEASE_LUN(vlun); | |
6985 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_failover(12): DONE! " | |
6986 "releasing lun, as failover was ASYNC\n")); | |
6987 } else { | |
6988 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_failover(12): DONE! " | |
6989 "NOT releasing lun, as failover was SYNC\n")); | |
6990 } | |
6991 return (retval); | |
6992 } | |
6993 | |
6994 /* | |
6995 * vhci_client_attached is called after the successful attach of a | |
6996 * client devinfo node. | |
6997 */ | |
6998 static void | |
6999 vhci_client_attached(dev_info_t *cdip) | |
7000 { | |
7001 mdi_pathinfo_t *pip; | |
7002 int circular; | |
7003 | |
7004 /* | |
7005 * At this point the client has attached and it's instance number is | |
7006 * valid, so we can set up kstats. We need to do this here because it | |
7007 * is possible for paths to go online prior to client attach, in which | |
7008 * case the call to vhci_kstat_create_pathinfo in vhci_pathinfo_online | |
7009 * was a noop. | |
7010 */ | |
7011 ndi_devi_enter(cdip, &circular); | |
7012 for (pip = mdi_get_next_phci_path(cdip, NULL); pip; | |
7013 pip = mdi_get_next_phci_path(cdip, pip)) | |
7014 vhci_kstat_create_pathinfo(pip); | |
7015 ndi_devi_exit(cdip, circular); | |
7016 } | |
7017 | |
7018 /* | |
7019 * quiesce all of the online paths | |
7020 */ | |
7021 static int | |
7022 vhci_quiesce_paths(dev_info_t *vdip, dev_info_t *cdip, scsi_vhci_lun_t *vlun, | |
7023 char *guid, char *active_pclass_ptr) | |
7024 { | |
7025 scsi_vhci_priv_t *svp; | |
7026 char *s_pclass = NULL; | |
7027 mdi_pathinfo_t *npip, *pip; | |
7028 int sps; | |
7029 | |
7030 /* quiesce currently active paths */ | |
7031 s_pclass = NULL; | |
7032 pip = npip = NULL; | |
7033 sps = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, NULL, &npip); | |
7034 if ((npip == NULL) || (sps != MDI_SUCCESS)) { | |
7035 return (1); | |
7036 } | |
7037 do { | |
7038 if (mdi_prop_lookup_string(npip, "path-class", | |
7039 &s_pclass) != MDI_SUCCESS) { | |
7040 mdi_rele_path(npip); | |
7041 vhci_log(CE_NOTE, vdip, "!Failover operation failed " | |
7042 "for device %s (GUID %s) due to an internal " | |
7043 "error", ddi_node_name(cdip), guid); | |
7044 return (1); | |
7045 } | |
7046 if (strcmp(s_pclass, active_pclass_ptr) == 0) { | |
7047 /* | |
7048 * quiesce path. Free s_pclass since | |
7049 * we don't need it anymore | |
7050 */ | |
7051 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
7052 "!vhci_failover(2)(%s): failing over " | |
7053 "from %s; quiescing path %p\n", | |
7054 guid, s_pclass, (void *)npip)); | |
7055 (void) mdi_prop_free(s_pclass); | |
7056 svp = (scsi_vhci_priv_t *) | |
7057 mdi_pi_get_vhci_private(npip); | |
7058 if (svp == NULL) { | |
7059 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
7060 "!vhci_failover(2.5)(%s): no " | |
7061 "client priv! %p offlined?\n", | |
7062 guid, (void *)npip)); | |
7063 pip = npip; | |
7064 sps = mdi_select_path(cdip, NULL, | |
7065 MDI_SELECT_ONLINE_PATH, pip, &npip); | |
7066 mdi_rele_path(pip); | |
7067 continue; | |
7068 } | |
7069 if (scsi_abort(&svp->svp_psd->sd_address, NULL) | |
7070 == 0) { | |
7071 (void) vhci_recovery_reset(vlun, | |
7072 &svp->svp_psd->sd_address, FALSE, | |
7073 VHCI_DEPTH_TARGET); | |
7074 } | |
7075 mutex_enter(&svp->svp_mutex); | |
7076 if (svp->svp_cmds == 0) { | |
7077 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
7078 "!vhci_failover(3)(%s):" | |
7079 "quiesced path %p\n", guid, (void *)npip)); | |
7080 } else { | |
7081 while (svp->svp_cmds != 0) { | |
7082 cv_wait(&svp->svp_cv, &svp->svp_mutex); | |
7083 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
7084 "!vhci_failover(3.cv)(%s):" | |
7085 "quiesced path %p\n", guid, | |
7086 (void *)npip)); | |
7087 } | |
7088 } | |
7089 mutex_exit(&svp->svp_mutex); | |
7090 } else { | |
7091 /* | |
7092 * make sure we freeup the memory | |
7093 */ | |
7094 (void) mdi_prop_free(s_pclass); | |
7095 } | |
7096 pip = npip; | |
7097 sps = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH, | |
7098 pip, &npip); | |
7099 mdi_rele_path(pip); | |
7100 } while ((npip != NULL) && (sps == MDI_SUCCESS)); | |
7101 return (0); | |
7102 } | |
7103 | |
7104 static struct scsi_vhci_lun * | |
7105 vhci_lun_lookup(dev_info_t *tgt_dip) | |
7106 { | |
7107 return ((struct scsi_vhci_lun *) | |
7108 mdi_client_get_vhci_private(tgt_dip)); | |
7109 } | |
7110 | |
7111 static struct scsi_vhci_lun * | |
7112 vhci_lun_lookup_alloc(dev_info_t *tgt_dip, char *guid, int *didalloc) | |
7113 { | |
7114 struct scsi_vhci_lun *svl; | |
7115 | |
7116 if (svl = vhci_lun_lookup(tgt_dip)) { | |
7117 return (svl); | |
7118 } | |
7119 | |
7120 svl = kmem_zalloc(sizeof (*svl), KM_SLEEP); | |
7121 svl->svl_lun_wwn = kmem_zalloc(strlen(guid)+1, KM_SLEEP); | |
7122 (void) strcpy(svl->svl_lun_wwn, guid); | |
7123 mutex_init(&svl->svl_mutex, NULL, MUTEX_DRIVER, NULL); | |
7124 cv_init(&svl->svl_cv, NULL, CV_DRIVER, NULL); | |
7125 sema_init(&svl->svl_pgr_sema, 1, NULL, SEMA_DRIVER, NULL); | |
7126 svl->svl_waiting_for_activepath = 1; | |
7127 svl->svl_sector_size = 1; | |
7128 mdi_client_set_vhci_private(tgt_dip, svl); | |
7129 *didalloc = 1; | |
7130 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
7131 "vhci_lun_lookup_alloc: guid %s vlun 0x%p\n", | |
7132 guid, (void *)svl)); | |
7133 return (svl); | |
7134 } | |
7135 | |
7136 static void | |
7137 vhci_lun_free(dev_info_t *tgt_dip) | |
7138 { | |
7139 struct scsi_vhci_lun *dvlp; | |
7140 char *guid; | |
4882
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7141 struct scsi_device *sd; |
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 /* |
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7144 * 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
|
7145 * 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
|
7146 */ |
272a171bc996
6531069 SCSI2 (tc_mhioctkown test cases) testing are showing UNRESOLVED results for ST2530
jw149990
parents:
4851
diff
changeset
|
7147 sd = (struct scsi_device *)ddi_get_driver_private(tgt_dip); |
4851 | 7148 |
7149 dvlp = (struct scsi_vhci_lun *) | |
7150 mdi_client_get_vhci_private(tgt_dip); | |
7151 ASSERT(dvlp != NULL); | |
7152 | |
7153 mdi_client_set_vhci_private(tgt_dip, NULL); | |
7154 | |
7155 guid = dvlp->svl_lun_wwn; | |
7156 ASSERT(guid != NULL); | |
7157 VHCI_DEBUG(4, (CE_NOTE, NULL, "!vhci_lun_free: %s\n", guid)); | |
7158 | |
7159 mutex_enter(&dvlp->svl_mutex); | |
7160 if (dvlp->svl_active_pclass != NULL) { | |
7161 kmem_free(dvlp->svl_active_pclass, | |
7162 strlen(dvlp->svl_active_pclass)+1); | |
7163 } | |
7164 dvlp->svl_active_pclass = NULL; | |
7165 mutex_exit(&dvlp->svl_mutex); | |
7166 | |
7167 if (dvlp->svl_lun_wwn != NULL) { | |
7168 kmem_free(dvlp->svl_lun_wwn, strlen(dvlp->svl_lun_wwn)+1); | |
7169 } | |
7170 dvlp->svl_lun_wwn = NULL; | |
7171 | |
7172 if (dvlp->svl_fops_name) { | |
7173 kmem_free(dvlp->svl_fops_name, strlen(dvlp->svl_fops_name)+1); | |
7174 } | |
7175 dvlp->svl_fops_name = NULL; | |
7176 | |
6023
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7177 if (dvlp->svl_fops_ctpriv != NULL) { |
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7178 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
|
7179 } |
9adf47ae28c4
6634757 add support for the HDS midrange array subsystem
cm136836
parents:
4949
diff
changeset
|
7180 |
4851 | 7181 if (dvlp->svl_flags & VLUN_TASK_D_ALIVE_FLG) |
7182 taskq_destroy(dvlp->svl_taskq); | |
7183 | |
7184 mutex_destroy(&dvlp->svl_mutex); | |
7185 cv_destroy(&dvlp->svl_cv); | |
7186 sema_destroy(&dvlp->svl_pgr_sema); | |
7187 kmem_free(dvlp, sizeof (*dvlp)); | |
4896
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
jw149990
parents:
4882
diff
changeset
|
7188 /* |
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
jw149990
parents:
4882
diff
changeset
|
7189 * vhci_lun_free may be called before the tgt_dip |
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
jw149990
parents:
4882
diff
changeset
|
7190 * initialization so check if the sd is NULL. |
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
jw149990
parents:
4882
diff
changeset
|
7191 */ |
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
jw149990
parents:
4882
diff
changeset
|
7192 if (sd != NULL) |
ff3edba9ce8c
6594084 fixing of 6591973 could cause system panic.
jw149990
parents:
4882
diff
changeset
|
7193 sd->sd_address.a_hba_tran->tran_tgt_private = NULL; |
4851 | 7194 } |
7195 | |
7196 | |
7197 int | |
7198 vhci_do_scsi_cmd(struct scsi_pkt *pkt) | |
7199 { | |
7200 int err = 0; | |
7201 int retry_cnt = 0; | |
7202 struct scsi_extended_sense *sns; | |
7203 | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7204 #ifdef DEBUG |
6962
225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
rralphs
parents:
6941
diff
changeset
|
7205 if (vhci_debug > 5) { |
225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
rralphs
parents:
6941
diff
changeset
|
7206 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
rralphs
parents:
6941
diff
changeset
|
7207 CE_WARN, "Vhci command", pkt->pkt_cdbp); |
225346ebbb42
6719151 scsi_vhci debug kernels spews a *lot* on the console during boot
rralphs
parents:
6941
diff
changeset
|
7208 } |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7209 #endif |
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7210 |
4851 | 7211 retry: |
7212 err = scsi_poll(pkt); | |
7213 if (err) { | |
7214 if (pkt->pkt_cdbp[0] == SCMD_RELEASE) { | |
7215 if (SCBP_C(pkt) == STATUS_RESERVATION_CONFLICT) { | |
7216 VHCI_DEBUG(1, (CE_NOTE, NULL, | |
7217 "!v_s_do_s_c: RELEASE conflict\n")); | |
7218 return (0); | |
7219 } | |
7220 } | |
7221 if (retry_cnt++ < 3) { | |
7222 VHCI_DEBUG(1, (CE_WARN, NULL, | |
7223 "!v_s_do_s_c:retry packet 0x%p " | |
7224 "status 0x%x reason %s", | |
7225 (void *)pkt, SCBP_C(pkt), | |
7226 scsi_rname(pkt->pkt_reason))); | |
7227 if ((pkt->pkt_reason == CMD_CMPLT) && | |
7228 (SCBP_C(pkt) == STATUS_CHECK) && | |
7229 (pkt->pkt_state & STATE_ARQ_DONE)) { | |
7230 sns = &(((struct scsi_arq_status *)(uintptr_t) | |
7231 (pkt->pkt_scbp))->sts_sensedata); | |
7232 VHCI_DEBUG(1, (CE_WARN, NULL, | |
7233 "!v_s_do_s_c:retry " | |
7234 "packet 0x%p sense data %s", (void *)pkt, | |
7235 scsi_sname(sns->es_key))); | |
7236 } | |
7237 goto retry; | |
7238 } | |
7239 VHCI_DEBUG(1, (CE_WARN, NULL, | |
7240 "!v_s_do_s_c: failed transport 0x%p 0x%x", | |
7241 (void *)pkt, SCBP_C(pkt))); | |
7242 return (0); | |
7243 } | |
7244 | |
7245 switch (pkt->pkt_reason) { | |
7246 case CMD_TIMEOUT: | |
7247 VHCI_DEBUG(1, (CE_WARN, NULL, "!pkt timed " | |
7248 "out (pkt 0x%p)", (void *)pkt)); | |
7249 return (0); | |
7250 case CMD_CMPLT: | |
7251 switch (SCBP_C(pkt)) { | |
7252 case STATUS_GOOD: | |
7253 break; | |
7254 case STATUS_CHECK: | |
7255 if (pkt->pkt_state & STATE_ARQ_DONE) { | |
7256 sns = &((( | |
7257 struct scsi_arq_status *) | |
7258 (uintptr_t) | |
7259 (pkt->pkt_scbp))-> | |
7260 sts_sensedata); | |
7261 if ((sns->es_key == | |
7262 KEY_UNIT_ATTENTION) || | |
7263 (sns->es_key == | |
7264 KEY_NOT_READY)) { | |
7265 /* | |
7266 * clear unit attn. | |
7267 */ | |
7268 | |
7269 VHCI_DEBUG(1, | |
7270 (CE_WARN, NULL, | |
7271 "!v_s_do_s_c: " | |
7272 "retry " | |
7273 "packet 0x%p sense " | |
7274 "data %s", | |
7275 (void *)pkt, | |
7276 scsi_sname | |
7277 (sns->es_key))); | |
7278 goto retry; | |
7279 } | |
7280 VHCI_DEBUG(4, (CE_WARN, NULL, | |
7281 "!ARQ while " | |
7282 "transporting " | |
7283 "(pkt 0x%p)", | |
7284 (void *)pkt)); | |
7285 return (0); | |
7286 } | |
7287 return (0); | |
7288 default: | |
7289 VHCI_DEBUG(1, (CE_WARN, NULL, | |
7290 "!Bad status returned " | |
7291 "(pkt 0x%p, status %x)", | |
7292 (void *)pkt, SCBP_C(pkt))); | |
7293 return (0); | |
7294 } | |
7295 break; | |
7296 case CMD_INCOMPLETE: | |
7297 case CMD_RESET: | |
7298 case CMD_ABORTED: | |
7299 case CMD_TRAN_ERR: | |
7300 if (retry_cnt++ < 1) { | |
7301 VHCI_DEBUG(1, (CE_WARN, NULL, | |
7302 "!v_s_do_s_c: retry packet 0x%p %s", | |
7303 (void *)pkt, scsi_rname(pkt->pkt_reason))); | |
7304 goto retry; | |
7305 } | |
7306 /* FALLTHROUGH */ | |
7307 default: | |
7308 VHCI_DEBUG(1, (CE_WARN, NULL, "!pkt did not " | |
7309 "complete successfully (pkt 0x%p," | |
7310 "reason %x)", (void *)pkt, pkt->pkt_reason)); | |
7311 return (0); | |
7312 } | |
7313 return (1); | |
7314 } | |
7315 | |
7316 static int | |
7317 vhci_quiesce_lun(struct scsi_vhci_lun *vlun) | |
7318 { | |
7319 mdi_pathinfo_t *pip, *spip; | |
7320 dev_info_t *cdip; | |
7321 struct scsi_vhci_priv *svp; | |
7322 mdi_pathinfo_state_t pstate; | |
7323 uint32_t p_ext_state; | |
7324 int circular; | |
7325 | |
7326 cdip = vlun->svl_dip; | |
7327 pip = spip = NULL; | |
7328 ndi_devi_enter(cdip, &circular); | |
7329 pip = mdi_get_next_phci_path(cdip, NULL); | |
7330 while (pip != NULL) { | |
7331 (void) mdi_pi_get_state2(pip, &pstate, &p_ext_state); | |
7332 if (pstate != MDI_PATHINFO_STATE_ONLINE) { | |
7333 spip = pip; | |
7334 pip = mdi_get_next_phci_path(cdip, spip); | |
7335 continue; | |
7336 } | |
7337 mdi_hold_path(pip); | |
7338 ndi_devi_exit(cdip, circular); | |
7339 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
7340 mutex_enter(&svp->svp_mutex); | |
7341 while (svp->svp_cmds != 0) { | |
7342 if (cv_timedwait(&svp->svp_cv, &svp->svp_mutex, | |
7343 ddi_get_lbolt() + drv_usectohz | |
7344 (vhci_path_quiesce_timeout * 1000000)) == -1) { | |
7345 mutex_exit(&svp->svp_mutex); | |
7346 mdi_rele_path(pip); | |
7347 VHCI_DEBUG(1, (CE_WARN, NULL, | |
7348 "Quiesce of lun is not successful " | |
7349 "vlun: 0x%p.", (void *)vlun)); | |
7350 return (0); | |
7351 } | |
7352 } | |
7353 mutex_exit(&svp->svp_mutex); | |
7354 ndi_devi_enter(cdip, &circular); | |
7355 spip = pip; | |
7356 pip = mdi_get_next_phci_path(cdip, spip); | |
7357 mdi_rele_path(spip); | |
7358 } | |
7359 ndi_devi_exit(cdip, circular); | |
7360 return (1); | |
7361 } | |
7362 | |
7363 static int | |
7364 vhci_pgr_validate_and_register(scsi_vhci_priv_t *svp) | |
7365 { | |
7366 scsi_vhci_lun_t *vlun; | |
7367 vhci_prout_t *prout; | |
7368 int rval, success; | |
7369 mdi_pathinfo_t *pip, *npip; | |
7370 scsi_vhci_priv_t *osvp; | |
7371 dev_info_t *cdip; | |
7372 uchar_t cdb_1; | |
7373 uchar_t temp_res_key[MHIOC_RESV_KEY_SIZE]; | |
7374 | |
7375 | |
7376 /* | |
7377 * see if there are any other paths available; if none, | |
7378 * then there is nothing to do. | |
7379 */ | |
7380 cdip = svp->svp_svl->svl_dip; | |
7381 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH | | |
7382 MDI_SELECT_STANDBY_PATH, NULL, &pip); | |
7383 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
7384 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7385 "%s%d: vhci_pgr_validate_and_register: first path\n", | |
7386 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
7387 return (1); | |
7388 } | |
7389 | |
7390 vlun = svp->svp_svl; | |
7391 prout = &vlun->svl_prout; | |
7392 ASSERT(vlun->svl_pgr_active != 0); | |
7393 | |
7394 /* | |
7395 * When the path was busy/offlined, some other host might have | |
7396 * cleared this key. Validate key on some other path first. | |
7397 * If it fails, return failure. | |
7398 */ | |
7399 | |
7400 npip = pip; | |
7401 pip = NULL; | |
7402 success = 0; | |
7403 | |
7404 /* Save the res key */ | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7405 bcopy(prout->res_key, temp_res_key, MHIOC_RESV_KEY_SIZE); |
4851 | 7406 |
7407 /* | |
7408 * Sometimes CDB from application can be a Register_And_Ignore. | |
7409 * Instead of validation, this cdb would result in force registration. | |
7410 * Convert it to normal cdb for validation. | |
7411 * After that be sure to restore the cdb. | |
7412 */ | |
7413 cdb_1 = vlun->svl_cdb[1]; | |
7414 vlun->svl_cdb[1] &= 0xe0; | |
7415 | |
7416 do { | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7417 osvp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(npip); |
4851 | 7418 if (osvp == NULL) { |
7419 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7420 "vhci_pgr_validate_and_register: no " | |
7421 "client priv! 0x%p offlined?\n", | |
7422 (void *)npip)); | |
7423 goto next_path_1; | |
7424 } | |
7425 | |
7426 if (osvp == svp) { | |
7427 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7428 "vhci_pgr_validate_and_register: same svp 0x%p" | |
7429 " npip 0x%p vlun 0x%p\n", | |
7430 (void *)svp, (void *)npip, (void *)vlun)); | |
7431 goto next_path_1; | |
7432 } | |
7433 | |
7434 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7435 "vhci_pgr_validate_and_register: First validate on" | |
7436 " osvp 0x%p being done. vlun 0x%p thread 0x%p Before bcopy" | |
7437 " cdb1 %x\n", (void *)osvp, (void *)vlun, | |
7438 (void *)curthread, vlun->svl_cdb[1])); | |
7439 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy:"); | |
7440 | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7441 bcopy(prout->service_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
4851 | 7442 |
7443 VHCI_DEBUG(4, (CE_WARN, NULL, "vlun 0x%p After bcopy", | |
7444 (void *)vlun)); | |
7445 vhci_print_prout_keys(vlun, "v_pgr_val_reg: after bcopy: "); | |
7446 | |
7447 rval = vhci_do_prout(osvp); | |
7448 if (rval == 1) { | |
7449 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7450 "%s%d: vhci_pgr_validate_and_register: key" | |
7451 " validated thread 0x%p\n", ddi_driver_name(cdip), | |
7452 ddi_get_instance(cdip), (void *)curthread)); | |
7453 pip = npip; | |
7454 success = 1; | |
7455 break; | |
7456 } else { | |
7457 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7458 "vhci_pgr_validate_and_register: First validation" | |
7459 " on osvp 0x%p failed %x\n", (void *)osvp, rval)); | |
7460 vhci_print_prout_keys(vlun, "v_pgr_val_reg: failed:"); | |
7461 } | |
7462 | |
7463 /* | |
7464 * Try other paths | |
7465 */ | |
7466 next_path_1: | |
7467 pip = npip; | |
7468 rval = mdi_select_path(cdip, NULL, | |
7469 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
7470 pip, &npip); | |
7471 mdi_rele_path(pip); | |
7472 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
7473 | |
7474 | |
7475 /* Be sure to restore original cdb */ | |
7476 vlun->svl_cdb[1] = cdb_1; | |
7477 | |
7478 /* Restore the res_key */ | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7479 bcopy(temp_res_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
4851 | 7480 |
7481 /* | |
7482 * If key could not be registered on any path for the first time, | |
7483 * return success as online should still continue. | |
7484 */ | |
7485 if (success == 0) { | |
7486 return (1); | |
7487 } | |
7488 | |
7489 ASSERT(pip != NULL); | |
7490 | |
7491 /* | |
7492 * Force register on new path | |
7493 */ | |
7494 cdb_1 = vlun->svl_cdb[1]; /* store the cdb */ | |
7495 | |
7496 vlun->svl_cdb[1] &= 0xe0; | |
7497 vlun->svl_cdb[1] |= VHCI_PROUT_R_AND_IGNORE; | |
7498 | |
7499 vhci_print_prout_keys(vlun, "v_pgr_val_reg: keys before bcopy: "); | |
7500 | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7501 bcopy(prout->active_service_key, prout->service_key, |
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7502 MHIOC_RESV_KEY_SIZE); |
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7503 bcopy(prout->active_res_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
4851 | 7504 |
7505 vhci_print_prout_keys(vlun, "v_pgr_val_reg:keys after bcopy: "); | |
7506 | |
7507 rval = vhci_do_prout(svp); | |
7508 vlun->svl_cdb[1] = cdb_1; /* restore the cdb */ | |
7509 if (rval != 1) { | |
7510 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7511 "vhci_pgr_validate_and_register: register on new" | |
7512 " path 0x%p svp 0x%p failed %x\n", | |
7513 (void *)pip, (void *)svp, rval)); | |
7514 vhci_print_prout_keys(vlun, "v_pgr_val_reg: reg failed: "); | |
7515 mdi_rele_path(pip); | |
7516 return (0); | |
7517 } | |
7518 | |
7519 if (bcmp(prout->service_key, zero_key, MHIOC_RESV_KEY_SIZE) == 0) { | |
7520 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7521 "vhci_pgr_validate_and_register: zero service key\n")); | |
7522 mdi_rele_path(pip); | |
7523 return (rval); | |
7524 } | |
7525 | |
7526 /* | |
7527 * While the key was force registered, some other host might have | |
7528 * cleared the key. Re-validate key on another pre-existing path | |
7529 * before declaring success. | |
7530 */ | |
7531 npip = pip; | |
7532 pip = NULL; | |
7533 | |
7534 /* | |
7535 * Sometimes CDB from application can be Register and Ignore. | |
7536 * Instead of validation, it would result in force registration. | |
7537 * Convert it to normal cdb for validation. | |
7538 * After that be sure to restore the cdb. | |
7539 */ | |
7540 cdb_1 = vlun->svl_cdb[1]; | |
7541 vlun->svl_cdb[1] &= 0xe0; | |
7542 success = 0; | |
7543 | |
7544 do { | |
7545 osvp = (scsi_vhci_priv_t *) | |
7546 mdi_pi_get_vhci_private(npip); | |
7547 if (osvp == NULL) { | |
7548 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7549 "vhci_pgr_validate_and_register: no " | |
7550 "client priv! 0x%p offlined?\n", | |
7551 (void *)npip)); | |
7552 goto next_path_2; | |
7553 } | |
7554 | |
7555 if (osvp == svp) { | |
7556 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7557 "vhci_pgr_validate_and_register: same osvp 0x%p" | |
7558 " npip 0x%p vlun 0x%p\n", | |
7559 (void *)svp, (void *)npip, (void *)vlun)); | |
7560 goto next_path_2; | |
7561 } | |
7562 | |
7563 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7564 "vhci_pgr_validate_and_register: Re-validation on" | |
7565 " osvp 0x%p being done. vlun 0x%p Before bcopy cdb1 %x\n", | |
7566 (void *)osvp, (void *)vlun, vlun->svl_cdb[1])); | |
7567 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
7568 | |
6941
c5d83acec1bc
6459247 scsi_vhci does not return correct value for dma-max property
rralphs
parents:
6777
diff
changeset
|
7569 bcopy(prout->service_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
4851 | 7570 |
7571 vhci_print_prout_keys(vlun, "v_pgr_val_reg: after bcopy: "); | |
7572 | |
7573 rval = vhci_do_prout(osvp); | |
7574 if (rval == 1) { | |
7575 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7576 "%s%d: vhci_pgr_validate_and_register: key" | |
7577 " validated thread 0x%p\n", ddi_driver_name(cdip), | |
7578 ddi_get_instance(cdip), (void *)curthread)); | |
7579 pip = npip; | |
7580 success = 1; | |
7581 break; | |
7582 } else { | |
7583 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7584 "vhci_pgr_validate_and_register: Re-validation on" | |
7585 " osvp 0x%p failed %x\n", (void *)osvp, rval)); | |
7586 vhci_print_prout_keys(vlun, | |
7587 "v_pgr_val_reg: reval failed: "); | |
7588 } | |
7589 | |
7590 /* | |
7591 * Try other paths | |
7592 */ | |
7593 next_path_2: | |
7594 pip = npip; | |
7595 rval = mdi_select_path(cdip, NULL, | |
7596 MDI_SELECT_ONLINE_PATH|MDI_SELECT_STANDBY_PATH, | |
7597 pip, &npip); | |
7598 mdi_rele_path(pip); | |
7599 } while ((rval == MDI_SUCCESS) && (npip != NULL)); | |
7600 | |
7601 /* Be sure to restore original cdb */ | |
7602 vlun->svl_cdb[1] = cdb_1; | |
7603 | |
7604 if (success == 1) { | |
7605 /* Successfully validated registration */ | |
7606 mdi_rele_path(pip); | |
7607 return (1); | |
7608 } | |
7609 | |
7610 VHCI_DEBUG(4, (CE_WARN, NULL, "key validation failed")); | |
7611 | |
7612 /* | |
7613 * key invalid, back out by registering key value of 0 | |
7614 */ | |
7615 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7616 "vhci_pgr_validate_and_register: backout on" | |
7617 " svp 0x%p being done\n", (void *)svp)); | |
7618 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
7619 | |
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7620 bcopy(prout->service_key, prout->res_key, MHIOC_RESV_KEY_SIZE); |
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7621 bzero(prout->service_key, MHIOC_RESV_KEY_SIZE); |
4851 | 7622 |
7623 vhci_print_prout_keys(vlun, "v_pgr_val_reg: before bcopy: "); | |
7624 | |
7625 /* | |
7626 * Get a new path | |
7627 */ | |
7628 rval = mdi_select_path(cdip, NULL, MDI_SELECT_ONLINE_PATH | | |
7629 MDI_SELECT_STANDBY_PATH, NULL, &pip); | |
7630 if ((rval != MDI_SUCCESS) || (pip == NULL)) { | |
7631 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7632 "%s%d: vhci_pgr_validate_and_register: no valid pip\n", | |
7633 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
7634 return (0); | |
7635 } | |
7636 | |
7637 if ((rval = vhci_do_prout(svp)) != 1) { | |
7638 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7639 "vhci_pgr_validate_and_register: backout on" | |
7640 " svp 0x%p failed\n", (void *)svp)); | |
7641 vhci_print_prout_keys(vlun, "backout failed"); | |
7642 | |
7643 VHCI_DEBUG(4, (CE_WARN, NULL, | |
7644 "%s%d: vhci_pgr_validate_and_register: key" | |
7645 " validation and backout failed", ddi_driver_name(cdip), | |
7646 ddi_get_instance(cdip))); | |
7647 if (rval == VHCI_PGR_ILLEGALOP) { | |
7648 VHCI_DEBUG(4, (CE_WARN, NULL, | |
7649 "%s%d: vhci_pgr_validate_and_register: key" | |
7650 " already cleared", ddi_driver_name(cdip), | |
7651 ddi_get_instance(cdip))); | |
7652 rval = 1; | |
7653 } else | |
7654 rval = 0; | |
7655 } else { | |
7656 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
7657 "%s%d: vhci_pgr_validate_and_register: key" | |
7658 " validation failed, key backed out\n", | |
7659 ddi_driver_name(cdip), ddi_get_instance(cdip))); | |
7660 vhci_print_prout_keys(vlun, "v_pgr_val_reg: key backed out: "); | |
7661 } | |
7662 mdi_rele_path(pip); | |
7663 | |
7664 return (rval); | |
7665 } | |
7666 | |
7667 /* | |
7668 * taskq routine to dispatch a scsi cmd to vhci_scsi_start. This ensures | |
7669 * that vhci_scsi_start is not called in interrupt context. | |
7670 * As the upper layer gets TRAN_ACCEPT when the command is dispatched, we | |
7671 * need to complete the command if something goes wrong. | |
7672 */ | |
7673 static void | |
7674 vhci_dispatch_scsi_start(void *arg) | |
7675 { | |
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7676 struct vhci_pkt *vpkt = (struct vhci_pkt *)arg; |
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7677 struct scsi_pkt *tpkt = vpkt->vpkt_tgt_pkt; |
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7678 int rval = TRAN_BUSY; |
4851 | 7679 |
7680 VHCI_DEBUG(6, (CE_NOTE, NULL, "!vhci_dispatch_scsi_start: sending" | |
7681 " scsi-2 reserve for 0x%p\n", | |
7682 (void *)ADDR2DIP(&(vpkt->vpkt_tgt_pkt->pkt_address)))); | |
7683 | |
7684 /* | |
7685 * To prevent the taskq from being called recursively we set the | |
7686 * the VHCI_PKT_THRU_TASKQ bit in the vhci_pkt_states. | |
7687 */ | |
7688 vpkt->vpkt_state |= VHCI_PKT_THRU_TASKQ; | |
7689 | |
7690 /* | |
7691 * Wait for the transport to get ready to send packets | |
7692 * and if it times out, it will return something other than | |
7693 * TRAN_BUSY. The vhci_reserve_delay may want to | |
7694 * get tuned for other transports and is therefore a global. | |
7695 * Using delay since this routine is called by taskq dispatch | |
7696 * and not called during interrupt context. | |
7697 */ | |
7698 while ((rval = vhci_scsi_start(&(vpkt->vpkt_tgt_pkt->pkt_address), | |
7699 vpkt->vpkt_tgt_pkt)) == TRAN_BUSY) { | |
7700 delay(drv_usectohz(vhci_reserve_delay)); | |
7701 } | |
7702 | |
7703 switch (rval) { | |
7704 case TRAN_ACCEPT: | |
7705 return; | |
7706 | |
7707 default: | |
7708 /* | |
7709 * This pkt shall be retried, and to ensure another taskq | |
7710 * is dispatched for it, clear the VHCI_PKT_THRU_TASKQ | |
7711 * flag. | |
7712 */ | |
7713 vpkt->vpkt_state &= ~VHCI_PKT_THRU_TASKQ; | |
7714 | |
7715 /* Ensure that the pkt is retried without a reset */ | |
7716 tpkt->pkt_reason = CMD_ABORTED; | |
7717 tpkt->pkt_statistics |= STAT_ABORTED; | |
7718 VHCI_DEBUG(1, (CE_WARN, NULL, "!vhci_dispatch_scsi_start: " | |
7719 "TRAN_rval %d returned for dip 0x%p", rval, | |
7720 (void *)ADDR2DIP(&(vpkt->vpkt_tgt_pkt->pkt_address)))); | |
7721 break; | |
7722 } | |
7723 | |
7724 /* | |
7725 * vpkt_org_vpkt should always be NULL here if the retry command | |
7726 * has been successfully dispatched. If vpkt_org_vpkt != NULL at | |
7727 * this point, it is an error so restore the original vpkt and | |
7728 * return an error to the target driver so it can retry the | |
7729 * command as appropriate. | |
7730 */ | |
7731 if (vpkt->vpkt_org_vpkt != NULL) { | |
7732 struct vhci_pkt *new_vpkt = vpkt; | |
7733 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
7734 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
7735 | |
7736 vpkt = vpkt->vpkt_org_vpkt; | |
7737 | |
7738 vpkt->vpkt_tgt_pkt->pkt_reason = tpkt->pkt_reason; | |
7739 vpkt->vpkt_tgt_pkt->pkt_statistics = tpkt->pkt_statistics; | |
7740 | |
7741 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
7742 new_vpkt->vpkt_tgt_pkt); | |
7743 | |
7744 tpkt = vpkt->vpkt_tgt_pkt; | |
7745 } | |
7746 | |
7747 if (tpkt->pkt_comp) { | |
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7748 tpkt->pkt_comp(tpkt); |
4851 | 7749 } |
7750 } | |
7751 | |
7752 static void | |
7753 vhci_initiate_auto_failback(void *arg) | |
7754 { | |
7755 struct scsi_vhci_lun *vlun = (struct scsi_vhci_lun *)arg; | |
7756 dev_info_t *vdip, *cdip; | |
7757 int held; | |
7758 | |
7759 cdip = vlun->svl_dip; | |
7760 vdip = ddi_get_parent(cdip); | |
7761 | |
7762 VHCI_HOLD_LUN(vlun, VH_SLEEP, held); | |
7763 | |
7764 /* | |
7765 * Perform a final check to see if the active path class is indeed | |
7766 * not the prefered path class. As in the time the auto failback | |
7767 * was dispatched, an external failover could have been detected. | |
7768 * [Some other host could have detected this condition and triggered | |
7769 * the auto failback before]. | |
7770 * In such a case if we go ahead with failover we will be negating the | |
7771 * whole purpose of auto failback. | |
7772 */ | |
7773 mutex_enter(&vlun->svl_mutex); | |
7774 if (vlun->svl_active_pclass != NULL) { | |
7775 char *best_pclass; | |
7776 struct scsi_failover_ops *fo; | |
7777 | |
7778 fo = vlun->svl_fops; | |
7779 | |
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7780 (void) fo->sfo_pathclass_next(NULL, &best_pclass, |
4851 | 7781 vlun->svl_fops_ctpriv); |
7782 if (strcmp(vlun->svl_active_pclass, best_pclass) == 0) { | |
7783 mutex_exit(&vlun->svl_mutex); | |
7784 VHCI_RELEASE_LUN(vlun); | |
7785 VHCI_DEBUG(1, (CE_NOTE, NULL, "Not initiating " | |
7786 "auto failback for %s as %s pathclass already " | |
7787 "active.\n", vlun->svl_lun_wwn, best_pclass)); | |
7788 return; | |
7789 } | |
7790 } | |
7791 mutex_exit(&vlun->svl_mutex); | |
7792 if (mdi_failover(vdip, vlun->svl_dip, MDI_FAILOVER_SYNC) | |
7793 == MDI_SUCCESS) { | |
7794 vhci_log(CE_NOTE, vdip, "!Auto failback operation " | |
7795 "succeeded for device %s (GUID %s)", | |
7796 ddi_node_name(cdip), vlun->svl_lun_wwn); | |
7797 } else { | |
7798 vhci_log(CE_NOTE, vdip, "!Auto failback operation " | |
7799 "failed for device %s (GUID %s)", | |
7800 ddi_node_name(cdip), vlun->svl_lun_wwn); | |
7801 } | |
7802 VHCI_RELEASE_LUN(vlun); | |
7803 } | |
7804 | |
7805 #ifdef DEBUG | |
7806 static void | |
7807 vhci_print_prin_keys(vhci_prin_readkeys_t *prin, int numkeys) | |
7808 { | |
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7809 vhci_clean_print(NULL, 5, "Current PGR Keys", |
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7810 (uchar_t *)prin, numkeys * 8); |
4851 | 7811 } |
7812 #endif | |
7813 | |
7814 static void | |
7815 vhci_print_prout_keys(scsi_vhci_lun_t *vlun, char *msg) | |
7816 { | |
7817 int i; | |
7818 vhci_prout_t *prout; | |
7819 char buf1[4*MHIOC_RESV_KEY_SIZE + 1]; | |
7820 char buf2[4*MHIOC_RESV_KEY_SIZE + 1]; | |
7821 char buf3[4*MHIOC_RESV_KEY_SIZE + 1]; | |
7822 char buf4[4*MHIOC_RESV_KEY_SIZE + 1]; | |
7823 | |
7824 prout = &vlun->svl_prout; | |
7825 | |
7826 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
7827 (void) sprintf(&buf1[4*i], "[%02x]", prout->res_key[i]); | |
7828 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
7829 (void) sprintf(&buf2[(4*i)], "[%02x]", prout->service_key[i]); | |
7830 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
7831 (void) sprintf(&buf3[4*i], "[%02x]", prout->active_res_key[i]); | |
7832 for (i = 0; i < MHIOC_RESV_KEY_SIZE; i++) | |
7833 (void) sprintf(&buf4[4*i], "[%02x]", | |
7834 prout->active_service_key[i]); | |
7835 | |
7836 /* Printing all in one go. Otherwise it will jumble up */ | |
7837 VHCI_DEBUG(5, (CE_CONT, NULL, "%s vlun 0x%p, thread 0x%p\n" | |
7838 "res_key: : %s\n" | |
7839 "service_key : %s\n" | |
7840 "active_res_key : %s\n" | |
7841 "active_service_key: %s\n", | |
7842 msg, (void *)vlun, (void *)curthread, buf1, buf2, buf3, buf4)); | |
7843 } | |
7844 | |
7845 /* | |
7846 * Called from vhci_scsi_start to update the pHCI pkt with target packet. | |
7847 */ | |
7848 static void | |
7849 vhci_update_pHCI_pkt(struct vhci_pkt *vpkt, struct scsi_pkt *pkt) | |
7850 { | |
7851 | |
7852 ASSERT(vpkt->vpkt_hba_pkt); | |
7853 | |
7854 vpkt->vpkt_hba_pkt->pkt_flags = pkt->pkt_flags; | |
7855 vpkt->vpkt_hba_pkt->pkt_flags |= FLAG_NOQUEUE; | |
7856 | |
7857 if ((vpkt->vpkt_hba_pkt->pkt_flags & FLAG_NOINTR) || | |
7858 MDI_PI_IS_SUSPENDED(vpkt->vpkt_path)) { | |
7859 /* | |
7860 * Polled Command is requested or HBA is in | |
7861 * suspended state | |
7862 */ | |
7863 vpkt->vpkt_hba_pkt->pkt_flags |= FLAG_NOINTR; | |
7864 vpkt->vpkt_hba_pkt->pkt_comp = NULL; | |
7865 } else { | |
7866 vpkt->vpkt_hba_pkt->pkt_comp = vhci_intr; | |
7867 } | |
7868 vpkt->vpkt_hba_pkt->pkt_time = pkt->pkt_time; | |
7869 bcopy(pkt->pkt_cdbp, vpkt->vpkt_hba_pkt->pkt_cdbp, | |
7870 vpkt->vpkt_tgt_init_cdblen); | |
7871 vpkt->vpkt_hba_pkt->pkt_resid = pkt->pkt_resid; | |
7872 | |
7873 /* Re-initialize the following pHCI packet state information */ | |
7874 vpkt->vpkt_hba_pkt->pkt_state = 0; | |
7875 vpkt->vpkt_hba_pkt->pkt_statistics = 0; | |
7876 vpkt->vpkt_hba_pkt->pkt_reason = 0; | |
7877 } | |
7878 | |
7879 static int | |
7880 vhci_scsi_bus_power(dev_info_t *parent, void *impl_arg, pm_bus_power_op_t op, | |
7881 void *arg, void *result) | |
7882 { | |
7883 int ret = DDI_SUCCESS; | |
7884 | |
7885 /* | |
7886 * Generic processing in MPxIO framework | |
7887 */ | |
7888 ret = mdi_bus_power(parent, impl_arg, op, arg, result); | |
7889 | |
7890 switch (ret) { | |
7891 case MDI_SUCCESS: | |
7892 ret = DDI_SUCCESS; | |
7893 break; | |
7894 case MDI_FAILURE: | |
7895 ret = DDI_FAILURE; | |
7896 break; | |
7897 default: | |
7898 break; | |
7899 } | |
7900 | |
7901 return (ret); | |
7902 } | |
7903 | |
7904 static int | |
7905 vhci_pHCI_cap(struct scsi_address *ap, char *cap, int val, int whom, | |
7906 mdi_pathinfo_t *pip) | |
7907 { | |
7908 dev_info_t *cdip; | |
7909 mdi_pathinfo_t *npip = NULL; | |
7910 scsi_vhci_priv_t *svp = NULL; | |
7911 struct scsi_address *pap = NULL; | |
7912 scsi_hba_tran_t *hba = NULL; | |
7913 int sps; | |
7914 int mps_flag; | |
7915 int rval = 0; | |
7916 | |
7917 mps_flag = (MDI_SELECT_ONLINE_PATH | MDI_SELECT_STANDBY_PATH); | |
7918 if (pip) { | |
7919 /* | |
7920 * If the call is from vhci_pathinfo_state_change, | |
7921 * then this path was busy and is becoming ready to accept IO. | |
7922 */ | |
7923 ASSERT(ap != NULL); | |
7924 hba = ap->a_hba_tran; | |
7925 ASSERT(hba != NULL); | |
7926 rval = scsi_ifsetcap(ap, cap, val, whom); | |
7927 | |
7928 VHCI_DEBUG(2, (CE_NOTE, NULL, | |
7929 "!vhci_pHCI_cap: only on path %p, ap %p, rval %x\n", | |
7930 (void *)pip, (void *)ap, rval)); | |
7931 | |
7932 return (rval); | |
7933 } | |
7934 | |
7935 /* | |
7936 * Set capability on all the pHCIs. | |
7937 * If any path is busy, then the capability would be set by | |
7938 * vhci_pathinfo_state_change. | |
7939 */ | |
7940 | |
7941 cdip = ADDR2DIP(ap); | |
7942 ASSERT(cdip != NULL); | |
7943 sps = mdi_select_path(cdip, NULL, mps_flag, NULL, &pip); | |
7944 if ((sps != MDI_SUCCESS) || (pip == NULL)) { | |
7945 VHCI_DEBUG(2, (CE_WARN, NULL, | |
7946 "!vhci_pHCI_cap: Unable to get a path, dip 0x%p", | |
7947 (void *)cdip)); | |
7948 return (0); | |
7949 } | |
7950 | |
7951 again: | |
7952 svp = (scsi_vhci_priv_t *)mdi_pi_get_vhci_private(pip); | |
7953 if (svp == NULL) { | |
7954 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_pHCI_cap: " | |
7955 "priv is NULL, pip 0x%p", (void *)pip)); | |
7956 mdi_rele_path(pip); | |
7957 return (rval); | |
7958 } | |
7959 | |
7960 if (svp->svp_psd == NULL) { | |
7961 VHCI_DEBUG(2, (CE_WARN, NULL, "!vhci_pHCI_cap: " | |
7962 "psd is NULL, pip 0x%p, svp 0x%p", | |
7963 (void *)pip, (void *)svp)); | |
7964 mdi_rele_path(pip); | |
7965 return (rval); | |
7966 } | |
7967 | |
7968 pap = &svp->svp_psd->sd_address; | |
7969 ASSERT(pap != NULL); | |
7970 hba = pap->a_hba_tran; | |
7971 ASSERT(hba != NULL); | |
7972 | |
7973 if (hba->tran_setcap != NULL) { | |
7974 rval = scsi_ifsetcap(pap, cap, val, whom); | |
7975 | |
7976 VHCI_DEBUG(2, (CE_NOTE, NULL, | |
7977 "!vhci_pHCI_cap: path %p, ap %p, rval %x\n", | |
7978 (void *)pip, (void *)ap, rval)); | |
7979 | |
7980 /* | |
7981 * Select next path and issue the setcap, repeat | |
7982 * until all paths are exhausted | |
7983 */ | |
7984 sps = mdi_select_path(cdip, NULL, mps_flag, pip, &npip); | |
7985 if ((sps != MDI_SUCCESS) || (npip == NULL)) { | |
7986 mdi_rele_path(pip); | |
7987 return (1); | |
7988 } | |
7989 mdi_rele_path(pip); | |
7990 pip = npip; | |
7991 goto again; | |
7992 } | |
7993 mdi_rele_path(pip); | |
7994 return (rval); | |
7995 } | |
7996 | |
7997 static int | |
7998 vhci_scsi_bus_config(dev_info_t *pdip, uint_t flags, ddi_bus_config_op_t op, | |
7999 void *arg, dev_info_t **child) | |
8000 { | |
8001 char *guid; | |
8002 | |
8003 if (op == BUS_CONFIG_ONE || op == BUS_UNCONFIG_ONE) | |
8004 guid = vhci_devnm_to_guid((char *)arg); | |
8005 else | |
8006 guid = NULL; | |
8007 | |
8008 if (mdi_vhci_bus_config(pdip, flags, op, arg, child, guid) | |
8009 == MDI_SUCCESS) | |
8010 return (NDI_SUCCESS); | |
8011 else | |
8012 return (NDI_FAILURE); | |
8013 } | |
8014 | |
8015 /* | |
8016 * Take the original vhci_pkt, create a duplicate of the pkt for resending | |
8017 * as though it originated in ssd. | |
8018 */ | |
8019 static struct scsi_pkt * | |
8020 vhci_create_retry_pkt(struct vhci_pkt *vpkt) | |
8021 { | |
8022 struct vhci_pkt *new_vpkt = NULL; | |
8023 struct scsi_pkt *pkt = NULL; | |
8024 | |
8025 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
8026 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
8027 | |
8028 /* | |
8029 * Ensure consistent data at completion time by setting PKT_CONSISTENT | |
8030 */ | |
8031 pkt = vhci_scsi_init_pkt(&svp->svp_psd->sd_address, pkt, | |
8032 vpkt->vpkt_tgt_init_bp, vpkt->vpkt_tgt_init_cdblen, | |
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8033 vpkt->vpkt_tgt_init_scblen, 0, PKT_CONSISTENT, NULL_FUNC, NULL); |
4851 | 8034 if (pkt != NULL) { |
8035 new_vpkt = TGTPKT2VHCIPKT(pkt); | |
8036 | |
8037 pkt->pkt_address = vpkt->vpkt_tgt_pkt->pkt_address; | |
8038 pkt->pkt_flags = vpkt->vpkt_tgt_pkt->pkt_flags; | |
8039 pkt->pkt_time = vpkt->vpkt_tgt_pkt->pkt_time; | |
8040 pkt->pkt_comp = vpkt->vpkt_tgt_pkt->pkt_comp; | |
8041 | |
8042 pkt->pkt_resid = 0; | |
8043 pkt->pkt_statistics = 0; | |
8044 pkt->pkt_reason = 0; | |
8045 | |
8046 bcopy(vpkt->vpkt_tgt_pkt->pkt_cdbp, | |
8047 pkt->pkt_cdbp, vpkt->vpkt_tgt_init_cdblen); | |
8048 | |
8049 /* | |
8050 * Save a pointer to the original vhci_pkt | |
8051 */ | |
8052 new_vpkt->vpkt_org_vpkt = vpkt; | |
8053 } | |
8054 | |
8055 return (pkt); | |
8056 } | |
8057 | |
8058 /* | |
8059 * Copy the successful completion information from the hba packet into | |
8060 * the original target pkt from the upper layer. Returns the original | |
8061 * vpkt and destroys the new vpkt from the internal retry. | |
8062 */ | |
8063 static struct vhci_pkt * | |
8064 vhci_sync_retry_pkt(struct vhci_pkt *vpkt) | |
8065 { | |
8066 struct vhci_pkt *ret_vpkt = NULL; | |
8067 struct scsi_pkt *tpkt = NULL; | |
8068 struct scsi_pkt *hba_pkt = NULL; | |
8069 scsi_vhci_priv_t *svp = (scsi_vhci_priv_t *) | |
8070 mdi_pi_get_vhci_private(vpkt->vpkt_path); | |
8071 | |
8072 ASSERT(vpkt->vpkt_org_vpkt != NULL); | |
8073 VHCI_DEBUG(0, (CE_NOTE, NULL, "vhci_sync_retry_pkt: Retry pkt " | |
8074 "completed successfully!\n")); | |
8075 | |
8076 ret_vpkt = vpkt->vpkt_org_vpkt; | |
8077 tpkt = ret_vpkt->vpkt_tgt_pkt; | |
8078 hba_pkt = vpkt->vpkt_hba_pkt; | |
8079 | |
8080 /* | |
8081 * Copy the good status into the target driver's packet | |
8082 */ | |
8083 *(tpkt->pkt_scbp) = *(hba_pkt->pkt_scbp); | |
8084 tpkt->pkt_resid = hba_pkt->pkt_resid; | |
8085 tpkt->pkt_state = hba_pkt->pkt_state; | |
8086 tpkt->pkt_statistics = hba_pkt->pkt_statistics; | |
8087 tpkt->pkt_reason = hba_pkt->pkt_reason; | |
8088 | |
8089 /* | |
8090 * Destroy the internally created vpkt for the retry | |
8091 */ | |
8092 vhci_scsi_destroy_pkt(&svp->svp_psd->sd_address, | |
8093 vpkt->vpkt_tgt_pkt); | |
8094 | |
8095 return (ret_vpkt); | |
8096 } | |
8097 | |
8098 /* restart the request sense request */ | |
8099 static void | |
8100 vhci_uscsi_restart_sense(void *arg) | |
8101 { | |
8102 struct buf *rqbp; | |
8103 struct buf *bp; | |
8104 struct scsi_pkt *rqpkt = (struct scsi_pkt *)arg; | |
8105 mp_uscsi_cmd_t *mp_uscmdp; | |
8106 | |
8107 VHCI_DEBUG(4, (CE_WARN, NULL, | |
8108 "vhci_uscsi_restart_sense: enter: rqpkt: %p", (void *)rqpkt)); | |
8109 | |
8110 if (scsi_transport(rqpkt) != TRAN_ACCEPT) { | |
8111 /* if it fails - need to wakeup the original command */ | |
8112 mp_uscmdp = rqpkt->pkt_private; | |
8113 bp = mp_uscmdp->cmdbp; | |
8114 rqbp = mp_uscmdp->rqbp; | |
8115 ASSERT(mp_uscmdp && bp && rqbp); | |
8116 scsi_free_consistent_buf(rqbp); | |
8117 scsi_destroy_pkt(rqpkt); | |
8118 bp->b_resid = bp->b_bcount; | |
8119 bioerror(bp, EIO); | |
8120 biodone(bp); | |
8121 } | |
8122 } | |
8123 | |
8124 /* | |
8125 * auto-rqsense is not enabled so we have to retrieve the request sense | |
8126 * manually. | |
8127 */ | |
8128 static int | |
8129 vhci_uscsi_send_sense(struct scsi_pkt *pkt, mp_uscsi_cmd_t *mp_uscmdp) | |
8130 { | |
8131 struct buf *rqbp, *cmdbp; | |
8132 struct scsi_pkt *rqpkt; | |
8133 int rval = 0; | |
8134 | |
8135 cmdbp = mp_uscmdp->cmdbp; | |
8136 ASSERT(cmdbp != NULL); | |
8137 | |
8138 VHCI_DEBUG(4, (CE_WARN, NULL, | |
8139 "vhci_uscsi_send_sense: enter: bp: %p pkt: %p scmd: %p", | |
8140 (void *)cmdbp, (void *)pkt, (void *)mp_uscmdp)); | |
8141 /* set up the packet information and cdb */ | |
8142 if ((rqbp = scsi_alloc_consistent_buf(mp_uscmdp->ap, NULL, | |
8143 SENSE_LENGTH, B_READ, NULL, NULL)) == NULL) { | |
8144 return (-1); | |
8145 } | |
8146 | |
8147 if ((rqpkt = scsi_init_pkt(mp_uscmdp->ap, NULL, rqbp, | |
8148 CDB_GROUP0, 1, 0, PKT_CONSISTENT, NULL, NULL)) == NULL) { | |
8149 scsi_free_consistent_buf(rqbp); | |
8150 return (-1); | |
8151 } | |
8152 | |
8153 (void) scsi_setup_cdb((union scsi_cdb *)(intptr_t)rqpkt->pkt_cdbp, | |
8154 SCMD_REQUEST_SENSE, 0, SENSE_LENGTH, 0); | |
8155 | |
8156 mp_uscmdp->rqbp = rqbp; | |
8157 rqbp->b_private = mp_uscmdp; | |
8158 rqpkt->pkt_flags |= FLAG_SENSING; | |
8159 rqpkt->pkt_time = 60; | |
8160 rqpkt->pkt_comp = vhci_uscsi_iodone; | |
8161 rqpkt->pkt_private = mp_uscmdp; | |
8162 | |
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8163 /* |
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|
8164 * NOTE: This code path is related to MPAPI uscsi(7I), so path |
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8165 * selection is not based on path_instance. |
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PSARC/2007/522 Disk enumeration for Sun Fire X4200 and X4200 M2
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8166 */ |
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|
8167 if (scsi_pkt_allocated_correctly(rqpkt)) |
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8168 rqpkt->pkt_path_instance = 0; |
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8169 |
4851 | 8170 /* get her done */ |
8171 switch (scsi_transport(rqpkt)) { | |
8172 case TRAN_ACCEPT: | |
8173 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
8174 "transport accepted.")); | |
8175 break; | |
8176 case TRAN_BUSY: | |
8177 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
8178 "transport busy, setting timeout.")); | |
8179 vhci_restart_timeid = timeout(vhci_uscsi_restart_sense, rqpkt, | |
8180 (drv_usectohz(5 * 1000000))); | |
8181 break; | |
8182 default: | |
8183 VHCI_DEBUG(1, (CE_NOTE, NULL, "vhci_uscsi_send_sense: " | |
8184 "transport failed")); | |
8185 scsi_free_consistent_buf(rqbp); | |
8186 scsi_destroy_pkt(rqpkt); | |
8187 rval = -1; | |
8188 } | |
8189 | |
8190 return (rval); | |
8191 } | |
8192 | |
8193 /* | |
8194 * done routine for the mpapi uscsi command - this is behaving as though | |
8195 * FLAG_DIAGNOSE is set meaning there are no retries except for a manual | |
8196 * request sense. | |
8197 */ | |
8198 void | |
8199 vhci_uscsi_iodone(struct scsi_pkt *pkt) | |
8200 { | |
8201 struct buf *bp; | |
8202 mp_uscsi_cmd_t *mp_uscmdp; | |
8203 struct uscsi_cmd *uscmdp; | |
8204 struct scsi_arq_status *arqstat; | |
8205 int err; | |
8206 | |
8207 mp_uscmdp = (mp_uscsi_cmd_t *)pkt->pkt_private; | |
8208 uscmdp = mp_uscmdp->uscmdp; | |
8209 bp = mp_uscmdp->cmdbp; | |
8210 ASSERT(bp != NULL); | |
8211 VHCI_DEBUG(4, (CE_WARN, NULL, | |
8212 "vhci_uscsi_iodone: enter: bp: %p pkt: %p scmd: %p", | |
8213 (void *)bp, (void *)pkt, (void *)mp_uscmdp)); | |
8214 /* Save the status and the residual into the uscsi_cmd struct */ | |
8215 uscmdp->uscsi_status = ((*(pkt)->pkt_scbp) & STATUS_MASK); | |
8216 uscmdp->uscsi_resid = bp->b_resid; | |
8217 | |
8218 /* return on a very successful command */ | |
8219 if (pkt->pkt_reason == CMD_CMPLT && | |
8220 SCBP_C(pkt) == 0 && ((pkt->pkt_flags & FLAG_SENSING) == 0) && | |
8221 pkt->pkt_resid == 0) { | |
8222 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
8223 scsi_destroy_pkt(pkt); | |
8224 biodone(bp); | |
8225 return; | |
8226 } | |
8227 VHCI_DEBUG(4, (CE_NOTE, NULL, "iodone: reason=0x%x " | |
8228 " pkt_resid=%ld pkt_state: 0x%x b_count: %ld b_resid: %ld", | |
8229 pkt->pkt_reason, pkt->pkt_resid, | |
8230 pkt->pkt_state, bp->b_bcount, bp->b_resid)); | |
8231 | |
8232 err = EIO; | |
8233 | |
8234 arqstat = (struct scsi_arq_status *)(intptr_t)(pkt->pkt_scbp); | |
8235 if (pkt->pkt_reason != CMD_CMPLT) { | |
8236 /* | |
8237 * The command did not complete. | |
8238 */ | |
8239 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8240 "vhci_uscsi_iodone: command did not complete." | |
8241 " reason: %x flag: %x", pkt->pkt_reason, pkt->pkt_flags)); | |
8242 if (pkt->pkt_flags & FLAG_SENSING) { | |
8243 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
8244 } else if (pkt->pkt_reason == CMD_TIMEOUT) { | |
8245 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_HARDERR); | |
8246 err = ETIMEDOUT; | |
8247 } | |
8248 } else if (pkt->pkt_state & STATE_ARQ_DONE && mp_uscmdp->arq_enabled) { | |
8249 /* | |
8250 * The auto-rqsense happened, and the packet has a filled-in | |
8251 * scsi_arq_status structure, pointed to by pkt_scbp. | |
8252 */ | |
8253 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8254 "vhci_uscsi_iodone: received auto-requested sense")); | |
8255 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
8256 /* get the amount of data to copy into rqbuf */ | |
8257 int rqlen = SENSE_LENGTH - arqstat->sts_rqpkt_resid; | |
8258 rqlen = min(((int)uscmdp->uscsi_rqlen), rqlen); | |
8259 uscmdp->uscsi_rqresid = uscmdp->uscsi_rqlen - rqlen; | |
8260 uscmdp->uscsi_rqstatus = | |
8261 *((char *)&arqstat->sts_rqpkt_status); | |
8262 if (uscmdp->uscsi_rqbuf && uscmdp->uscsi_rqlen && | |
8263 rqlen != 0) { | |
8264 bcopy(&(arqstat->sts_sensedata), | |
8265 uscmdp->uscsi_rqbuf, rqlen); | |
8266 } | |
8267 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
8268 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8269 "vhci_uscsi_iodone: ARQ " | |
8270 "uscsi_rqstatus=0x%x uscsi_rqresid=%d rqlen: %d " | |
8271 "xfer: %d rqpkt_resid: %d\n", | |
8272 uscmdp->uscsi_rqstatus, uscmdp->uscsi_rqresid, | |
8273 uscmdp->uscsi_rqlen, rqlen, | |
8274 arqstat->sts_rqpkt_resid)); | |
8275 } | |
8276 } else if (pkt->pkt_flags & FLAG_SENSING) { | |
8277 struct buf *rqbp; | |
8278 struct scsi_status *rqstatus; | |
8279 | |
8280 rqstatus = (struct scsi_status *)pkt->pkt_scbp; | |
8281 /* a manual request sense was done - get the information */ | |
8282 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
8283 int rqlen = SENSE_LENGTH - pkt->pkt_resid; | |
8284 | |
8285 rqbp = mp_uscmdp->rqbp; | |
8286 /* get the amount of data to copy into rqbuf */ | |
8287 rqlen = min(((int)uscmdp->uscsi_rqlen), rqlen); | |
8288 uscmdp->uscsi_rqresid = uscmdp->uscsi_rqlen - rqlen; | |
8289 uscmdp->uscsi_rqstatus = *((char *)rqstatus); | |
8290 if (uscmdp->uscsi_rqlen && uscmdp->uscsi_rqbuf) { | |
8291 bcopy(rqbp->b_un.b_addr, uscmdp->uscsi_rqbuf, | |
8292 rqlen); | |
8293 } | |
8294 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
8295 scsi_free_consistent_buf(rqbp); | |
8296 } | |
8297 VHCI_DEBUG(4, (CE_NOTE, NULL, "vhci_uscsi_iodone: FLAG_SENSING" | |
8298 "uscsi_rqstatus=0x%x uscsi_rqresid=%d\n", | |
8299 uscmdp->uscsi_rqstatus, uscmdp->uscsi_rqresid)); | |
8300 } else { | |
8301 struct scsi_status *status = | |
8302 (struct scsi_status *)pkt->pkt_scbp; | |
8303 /* | |
8304 * Command completed and we're not getting sense. Check for | |
8305 * errors and decide what to do next. | |
8306 */ | |
8307 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8308 "vhci_uscsi_iodone: command appears complete: reason: %x", | |
8309 pkt->pkt_reason)); | |
8310 if (status->sts_chk) { | |
8311 /* need to manually get the request sense */ | |
8312 if (vhci_uscsi_send_sense(pkt, mp_uscmdp) == 0) { | |
8313 scsi_destroy_pkt(pkt); | |
8314 return; | |
8315 } | |
8316 } else { | |
8317 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8318 "vhci_chk_err: appears complete")); | |
8319 err = 0; | |
8320 mdi_pi_kstat_iosupdate(mp_uscmdp->pip, bp); | |
8321 if (pkt->pkt_resid) { | |
8322 bp->b_resid += pkt->pkt_resid; | |
8323 } | |
8324 } | |
8325 } | |
8326 | |
8327 if (err) { | |
8328 if (bp->b_resid == 0) | |
8329 bp->b_resid = bp->b_bcount; | |
8330 bioerror(bp, err); | |
8331 bp->b_flags |= B_ERROR; | |
8332 } | |
8333 | |
8334 scsi_destroy_pkt(pkt); | |
8335 biodone(bp); | |
8336 | |
8337 VHCI_DEBUG(4, (CE_WARN, NULL, "vhci_uscsi_iodone: exit")); | |
8338 } | |
8339 | |
8340 /* | |
8341 * start routine for the mpapi uscsi command | |
8342 */ | |
8343 int | |
8344 vhci_uscsi_iostart(struct buf *bp) | |
8345 { | |
8346 struct scsi_pkt *pkt; | |
8347 struct uscsi_cmd *uscmdp; | |
8348 mp_uscsi_cmd_t *mp_uscmdp; | |
8349 int stat_size, rval; | |
8350 int retry = 0; | |
8351 | |
8352 ASSERT(bp->b_private != NULL); | |
8353 | |
8354 mp_uscmdp = (mp_uscsi_cmd_t *)bp->b_private; | |
8355 uscmdp = mp_uscmdp->uscmdp; | |
8356 if (uscmdp->uscsi_flags & USCSI_RQENABLE) { | |
8357 stat_size = SENSE_LENGTH; | |
8358 } else { | |
8359 stat_size = 1; | |
8360 } | |
8361 | |
8362 pkt = scsi_init_pkt(mp_uscmdp->ap, NULL, bp, uscmdp->uscsi_cdblen, | |
8363 stat_size, 0, 0, SLEEP_FUNC, NULL); | |
8364 if (pkt == NULL) { | |
8365 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8366 "vhci_uscsi_iostart: rval: EINVAL")); | |
8367 bp->b_resid = bp->b_bcount; | |
8368 uscmdp->uscsi_resid = bp->b_bcount; | |
8369 bioerror(bp, EINVAL); | |
8370 biodone(bp); | |
8371 return (EINVAL); | |
8372 } | |
8373 | |
8374 pkt->pkt_time = uscmdp->uscsi_timeout; | |
8375 bcopy(uscmdp->uscsi_cdb, pkt->pkt_cdbp, (size_t)uscmdp->uscsi_cdblen); | |
8376 pkt->pkt_comp = vhci_uscsi_iodone; | |
8377 pkt->pkt_private = mp_uscmdp; | |
8378 if (uscmdp->uscsi_flags & USCSI_SILENT) | |
8379 pkt->pkt_flags |= FLAG_SILENT; | |
8380 if (uscmdp->uscsi_flags & USCSI_ISOLATE) | |
8381 pkt->pkt_flags |= FLAG_ISOLATE; | |
8382 if (uscmdp->uscsi_flags & USCSI_DIAGNOSE) | |
8383 pkt->pkt_flags |= FLAG_DIAGNOSE; | |
8384 if (uscmdp->uscsi_flags & USCSI_RENEGOT) { | |
8385 pkt->pkt_flags |= FLAG_RENEGOTIATE_WIDE_SYNC; | |
8386 } | |
8387 VHCI_DEBUG(4, (CE_WARN, NULL, | |
8388 "vhci_uscsi_iostart: ap: %p pkt: %p pcdbp: %p uscmdp: %p" | |
8389 " ucdbp: %p pcdblen: %d bp: %p count: %ld pip: %p" | |
8390 " stat_size: %d", | |
8391 (void *)mp_uscmdp->ap, (void *)pkt, (void *)pkt->pkt_cdbp, | |
8392 (void *)uscmdp, (void *)uscmdp->uscsi_cdb, pkt->pkt_cdblen, | |
8393 (void *)bp, bp->b_bcount, (void *)mp_uscmdp->pip, stat_size)); | |
8394 | |
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8395 /* |
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8396 * NOTE: This code path is related to MPAPI uscsi(7I), so path |
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8397 * selection is not based on path_instance. |
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8398 */ |
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8399 if (scsi_pkt_allocated_correctly(pkt)) |
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8400 pkt->pkt_path_instance = 0; |
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8401 |
4851 | 8402 while (((rval = scsi_transport(pkt)) == TRAN_BUSY) && |
8403 retry < vhci_uscsi_retry_count) { | |
8404 delay(drv_usectohz(vhci_uscsi_delay)); | |
8405 retry++; | |
8406 } | |
8407 if (retry >= vhci_uscsi_retry_count) { | |
8408 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8409 "vhci_uscsi_iostart: tran_busy - retry: %d", retry)); | |
8410 } | |
8411 switch (rval) { | |
8412 case TRAN_ACCEPT: | |
8413 rval = 0; | |
8414 break; | |
8415 | |
8416 default: | |
8417 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8418 "vhci_uscsi_iostart: rval: %d count: %ld res: %ld", | |
8419 rval, bp->b_bcount, bp->b_resid)); | |
8420 bp->b_resid = bp->b_bcount; | |
8421 uscmdp->uscsi_resid = bp->b_bcount; | |
8422 bioerror(bp, EIO); | |
8423 scsi_destroy_pkt(pkt); | |
8424 biodone(bp); | |
8425 rval = EIO; | |
8426 MDI_PI_ERRSTAT(mp_uscmdp->pip, MDI_PI_TRANSERR); | |
8427 break; | |
8428 } | |
8429 VHCI_DEBUG(4, (CE_NOTE, NULL, | |
8430 "vhci_uscsi_iostart: exit: rval: %d", rval)); | |
8431 return (rval); | |
8432 } | |
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8433 |
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8434 #ifdef DEBUG |
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8435 |
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8436 extern struct scsi_key_strings scsi_cmds[]; |
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8437 |
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8438 static char * |
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8439 vhci_print_scsi_cmd(char cmd) |
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8440 { |
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8441 char tmp[64]; |
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8442 char *cpnt; |
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6459247 scsi_vhci does not return correct value for dma-max property
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8443 |
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8444 cpnt = scsi_cmd_name(cmd, scsi_cmds, tmp); |
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8445 /* tmp goes out of scope on return and caller sees garbage */ |
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8446 if (cpnt == tmp) { |
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8447 cpnt = "Unknown Command"; |
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8448 } |
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8449 return (cpnt); |
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8450 } |
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|
8451 |
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8452 extern uchar_t scsi_cdb_size[]; |
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|
8453 |
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8454 static void |
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8455 vhci_print_cdb(dev_info_t *dip, uint_t level, char *title, uchar_t *cdb) |
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8456 { |
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8457 int len = scsi_cdb_size[CDB_GROUPID(cdb[0])]; |
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8458 char buf[256]; |
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|
8459 |
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8460 if (level == CE_NOTE) { |
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8461 vhci_log(level, dip, "path cmd %s\n", |
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8462 vhci_print_scsi_cmd(*cdb)); |
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8463 return; |
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|
8464 } |
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|
8465 |
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8466 (void) sprintf(buf, "%s for cmd(%s)", title, vhci_print_scsi_cmd(*cdb)); |
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8467 vhci_clean_print(dip, level, buf, cdb, len); |
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8468 } |
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|
8469 |
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|
8470 static void |
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8471 vhci_clean_print(dev_info_t *dev, uint_t level, char *title, uchar_t *data, |
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8472 int len) |
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|
8473 { |
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8474 int i; |
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|
8475 int c; |
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8476 char *format; |
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|
8477 char buf[256]; |
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8478 uchar_t byte; |
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|
8479 |
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8480 (void) sprintf(buf, "%s:\n", title); |
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8481 vhci_log(level, dev, "%s", buf); |
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8482 level = CE_CONT; |
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8483 for (i = 0; i < len; ) { |
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8484 buf[0] = 0; |
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8485 for (c = 0; c < 8 && i < len; c++, i++) { |
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8486 byte = (uchar_t)data[i]; |
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8487 if (byte < 0x10) |
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8488 format = "0x0%x "; |
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8489 else |
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|
8490 format = "0x%x "; |
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8491 (void) sprintf(&buf[(int)strlen(buf)], format, byte); |
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8492 } |
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8493 (void) sprintf(&buf[(int)strlen(buf)], "\n"); |
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|
8494 |
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8495 vhci_log(level, dev, "%s\n", buf); |
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8496 } |
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|
8497 } |
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8498 #endif |