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 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 * Copyright (c) 2011 Bayard G. Bell. All rights reserved.
25 */
26
27 /*
28 * sf - Solaris Fibre Channel driver
29 *
30 * This module implements some of the Fibre Channel FC-4 layer, converting
31 * from FC frames to SCSI and back. (Note: no sequence management is done
32 * here, though.)
33 */
34
35 #if defined(lint) && !defined(DEBUG)
36 #define DEBUG 1
37 #endif
38
39 /*
40 * XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
41 * Need to use the ugly RAID LUN mappings in FCP Annex D
42 * to prevent SCSA from barfing. This *REALLY* needs to
43 * be addressed by the standards committee.
44 */
45 #define RAID_LUNS 1
46
47 #ifdef DEBUG
48 static int sfdebug = 0;
49 #include <sys/debug.h>
50
51 #define SF_DEBUG(level, args) \
52 if (sfdebug >= (level)) sf_log args
53 #else
54 #define SF_DEBUG(level, args)
55 #endif
56
57 static int sf_bus_config_debug = 0;
58
59 /* Why do I have to do this? */
60 #define offsetof(s, m) (size_t)(&(((s *)0)->m))
61
62 #include <sys/scsi/scsi.h>
63 #include <sys/fc4/fcal.h>
64 #include <sys/fc4/fcp.h>
65 #include <sys/fc4/fcal_linkapp.h>
66 #include <sys/socal_cq_defs.h>
67 #include <sys/fc4/fcal_transport.h>
68 #include <sys/fc4/fcio.h>
69 #include <sys/scsi/adapters/sfvar.h>
70 #include <sys/scsi/impl/scsi_reset_notify.h>
71 #include <sys/stat.h>
72 #include <sys/varargs.h>
73 #include <sys/var.h>
74 #include <sys/thread.h>
75 #include <sys/proc.h>
76 #include <sys/kstat.h>
77 #include <sys/devctl.h>
78 #include <sys/scsi/targets/ses.h>
79 #include <sys/callb.h>
80
81 static int sf_info(dev_info_t *, ddi_info_cmd_t, void *, void **);
82 static int sf_attach(dev_info_t *, ddi_attach_cmd_t);
83 static int sf_detach(dev_info_t *, ddi_detach_cmd_t);
84 static void sf_softstate_unlink(struct sf *);
85 static int sf_scsi_bus_config(dev_info_t *parent, uint_t flag,
86 ddi_bus_config_op_t op, void *arg, dev_info_t **childp);
87 static int sf_scsi_bus_unconfig(dev_info_t *parent, uint_t flag,
88 ddi_bus_config_op_t op, void *arg);
89 static int sf_scsi_tgt_init(dev_info_t *, dev_info_t *,
90 scsi_hba_tran_t *, struct scsi_device *);
91 static void sf_scsi_tgt_free(dev_info_t *, dev_info_t *,
92 scsi_hba_tran_t *, struct scsi_device *);
93 static int sf_pkt_alloc_extern(struct sf *, struct sf_pkt *,
94 int, int, int);
95 static void sf_pkt_destroy_extern(struct sf *, struct sf_pkt *);
96 static struct scsi_pkt *sf_scsi_init_pkt(struct scsi_address *,
97 struct scsi_pkt *, struct buf *, int, int, int, int, int (*)(), caddr_t);
98 static void sf_scsi_destroy_pkt(struct scsi_address *, struct scsi_pkt *);
99 static void sf_scsi_dmafree(struct scsi_address *, struct scsi_pkt *);
100 static void sf_scsi_sync_pkt(struct scsi_address *, struct scsi_pkt *);
101 static int sf_scsi_reset_notify(struct scsi_address *, int,
102 void (*)(caddr_t), caddr_t);
103 static int sf_scsi_get_name(struct scsi_device *, char *, int);
104 static int sf_scsi_get_bus_addr(struct scsi_device *, char *, int);
105 static int sf_add_cr_pool(struct sf *);
106 static int sf_cr_alloc(struct sf *, struct sf_pkt *, int (*)());
107 static void sf_cr_free(struct sf_cr_pool *, struct sf_pkt *);
108 static void sf_crpool_free(struct sf *);
109 static int sf_kmem_cache_constructor(void *, void *, int);
110 static void sf_kmem_cache_destructor(void *, void *);
111 static void sf_statec_callback(void *, int);
112 static int sf_login(struct sf *, uchar_t, uchar_t, uint_t, int);
113 static int sf_els_transport(struct sf *, struct sf_els_hdr *);
114 static void sf_els_callback(struct fcal_packet *);
115 static int sf_do_prli(struct sf *, struct sf_els_hdr *, struct la_els_logi *);
116 static int sf_do_adisc(struct sf *, struct sf_els_hdr *);
117 static int sf_do_reportlun(struct sf *, struct sf_els_hdr *,
118 struct sf_target *);
119 static void sf_reportlun_callback(struct fcal_packet *);
120 static int sf_do_inquiry(struct sf *, struct sf_els_hdr *,
121 struct sf_target *);
122 static void sf_inq_callback(struct fcal_packet *);
123 static struct fcal_packet *sf_els_alloc(struct sf *, uchar_t, int, int,
124 int, caddr_t *, caddr_t *);
125 static void sf_els_free(struct fcal_packet *);
126 static struct sf_target *sf_create_target(struct sf *,
127 struct sf_els_hdr *, int, int64_t);
128 #ifdef RAID_LUNS
129 static struct sf_target *sf_lookup_target(struct sf *, uchar_t *, int);
130 #else
131 static struct sf_target *sf_lookup_target(struct sf *, uchar_t *, int64_t);
132 #endif
133 static void sf_finish_init(struct sf *, int);
134 static void sf_offline_target(struct sf *, struct sf_target *);
135 static void sf_create_devinfo(struct sf *, struct sf_target *, int);
136 static int sf_create_props(dev_info_t *, struct sf_target *, int);
137 static int sf_commoncap(struct scsi_address *, char *, int, int, int);
138 static int sf_getcap(struct scsi_address *, char *, int);
139 static int sf_setcap(struct scsi_address *, char *, int, int);
140 static int sf_abort(struct scsi_address *, struct scsi_pkt *);
141 static int sf_reset(struct scsi_address *, int);
142 static void sf_abort_all(struct sf *, struct sf_target *, int, int, int);
143 static int sf_start(struct scsi_address *, struct scsi_pkt *);
144 static int sf_start_internal(struct sf *, struct sf_pkt *);
145 static void sf_fill_ids(struct sf *, struct sf_pkt *, struct sf_target *);
146 static int sf_prepare_pkt(struct sf *, struct sf_pkt *, struct sf_target *);
147 static int sf_dopoll(struct sf *, struct sf_pkt *);
148 static void sf_cmd_callback(struct fcal_packet *);
149 static void sf_throttle(struct sf *);
150 static void sf_watch(void *);
151 static void sf_throttle_start(struct sf *);
152 static void sf_check_targets(struct sf *);
153 static void sf_check_reset_delay(void *);
154 static int sf_target_timeout(struct sf *, struct sf_pkt *);
155 static void sf_force_lip(struct sf *);
156 static void sf_unsol_els_callback(void *, soc_response_t *, caddr_t);
157 static struct sf_els_hdr *sf_els_timeout(struct sf *, struct sf_els_hdr *);
158 /*PRINTFLIKE3*/
159 static void sf_log(struct sf *, int, const char *, ...);
160 static int sf_kstat_update(kstat_t *, int);
161 static int sf_open(dev_t *, int, int, cred_t *);
162 static int sf_close(dev_t, int, int, cred_t *);
163 static int sf_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
164 static struct sf_target *sf_get_target_from_dip(struct sf *, dev_info_t *);
165 static int sf_bus_get_eventcookie(dev_info_t *, dev_info_t *, char *,
166 ddi_eventcookie_t *);
167 static int sf_bus_add_eventcall(dev_info_t *, dev_info_t *,
168 ddi_eventcookie_t, void (*)(), void *, ddi_callback_id_t *cb_id);
169 static int sf_bus_remove_eventcall(dev_info_t *devi, ddi_callback_id_t cb_id);
170 static int sf_bus_post_event(dev_info_t *, dev_info_t *,
171 ddi_eventcookie_t, void *);
172
173 static void sf_hp_daemon(void *);
174
175 /*
176 * this is required to be able to supply a control node
177 * where ioctls can be executed
178 */
179 struct cb_ops sf_cb_ops = {
180 sf_open, /* open */
181 sf_close, /* close */
182 nodev, /* strategy */
183 nodev, /* print */
184 nodev, /* dump */
185 nodev, /* read */
186 nodev, /* write */
187 sf_ioctl, /* ioctl */
188 nodev, /* devmap */
189 nodev, /* mmap */
190 nodev, /* segmap */
191 nochpoll, /* poll */
192 ddi_prop_op, /* cb_prop_op */
193 0, /* streamtab */
194 D_MP | D_NEW | D_HOTPLUG /* driver flags */
195
196 };
197
198 /*
199 * autoconfiguration routines.
200 */
201 static struct dev_ops sf_ops = {
202 DEVO_REV, /* devo_rev, */
203 0, /* refcnt */
204 sf_info, /* info */
205 nulldev, /* identify */
206 nulldev, /* probe */
207 sf_attach, /* attach */
208 sf_detach, /* detach */
209 nodev, /* reset */
210 &sf_cb_ops, /* driver operations */
211 NULL, /* bus operations */
212 NULL, /* power management */
213 ddi_quiesce_not_supported, /* devo_quiesce */
214 };
215
216 #define SF_NAME "FC-AL FCP Nexus Driver" /* Name of the module. */
217 static char sf_version[] = "1.72 08/19/2008"; /* version of the module */
218
219 static struct modldrv modldrv = {
220 &mod_driverops, /* Type of module. This one is a driver */
221 SF_NAME,
222 &sf_ops, /* driver ops */
223 };
224
225 static struct modlinkage modlinkage = {
226 MODREV_1, (void *)&modldrv, NULL
227 };
228
229 /* XXXXXX The following is here to handle broken targets -- remove it later */
230 static int sf_reportlun_forever = 0;
231 /* XXXXXX */
232 static int sf_lip_on_plogo = 0;
233 static int sf_els_retries = SF_ELS_RETRIES;
234 static struct sf *sf_head = NULL;
235 static int sf_target_scan_cnt = 4;
236 static int sf_pkt_scan_cnt = 5;
237 static int sf_pool_scan_cnt = 1800;
238 static void *sf_state = NULL;
239 static int sf_watchdog_init = 0;
240 static int sf_watchdog_time = 0;
241 static int sf_watchdog_timeout = 1;
242 static int sf_watchdog_tick;
243 static int sf_watch_running = 0;
244 static timeout_id_t sf_watchdog_id;
245 static timeout_id_t sf_reset_timeout_id;
246 static int sf_max_targets = SF_MAX_TARGETS;
247 static kmutex_t sf_global_mutex;
248 static int sf_core = 0;
249 int *sf_token = NULL; /* Must not be static or lint complains. */
250 static kcondvar_t sf_watch_cv;
251 extern pri_t minclsyspri;
252 static ddi_eventcookie_t sf_insert_eid;
253 static ddi_eventcookie_t sf_remove_eid;
254
255 static ndi_event_definition_t sf_event_defs[] = {
256 { SF_EVENT_TAG_INSERT, FCAL_INSERT_EVENT, EPL_KERNEL, 0 },
257 { SF_EVENT_TAG_REMOVE, FCAL_REMOVE_EVENT, EPL_INTERRUPT, 0 }
258 };
259
260 #define SF_N_NDI_EVENTS \
261 (sizeof (sf_event_defs) / sizeof (ndi_event_definition_t))
262
263 #ifdef DEBUG
264 static int sf_lip_flag = 1; /* bool: to allow LIPs */
265 static int sf_reset_flag = 1; /* bool: to allow reset after LIP */
266 static int sf_abort_flag = 0; /* bool: to do just one abort */
267 #endif
268
269 extern int64_t ddi_get_lbolt64(void);
270
271 /*
272 * for converting between target number (switch) and hard address/AL_PA
273 */
274 static uchar_t sf_switch_to_alpa[] = {
275 0xef, 0xe8, 0xe4, 0xe2, 0xe1, 0xe0, 0xdc, 0xda, 0xd9, 0xd6,
276 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xce, 0xcd, 0xcc, 0xcb, 0xca,
277 0xc9, 0xc7, 0xc6, 0xc5, 0xc3, 0xbc, 0xba, 0xb9, 0xb6, 0xb5,
278 0xb4, 0xb3, 0xb2, 0xb1, 0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9,
279 0xa7, 0xa6, 0xa5, 0xa3, 0x9f, 0x9e, 0x9d, 0x9b, 0x98, 0x97,
280 0x90, 0x8f, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7c, 0x7a, 0x79,
281 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6e, 0x6d, 0x6c, 0x6b,
282 0x6a, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5c, 0x5a, 0x59, 0x56,
283 0x55, 0x54, 0x53, 0x52, 0x51, 0x4e, 0x4d, 0x4c, 0x4b, 0x4a,
284 0x49, 0x47, 0x46, 0x45, 0x43, 0x3c, 0x3a, 0x39, 0x36, 0x35,
285 0x34, 0x33, 0x32, 0x31, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29,
286 0x27, 0x26, 0x25, 0x23, 0x1f, 0x1e, 0x1d, 0x1b, 0x18, 0x17,
287 0x10, 0x0f, 0x08, 0x04, 0x02, 0x01
288 };
289
290 static uchar_t sf_alpa_to_switch[] = {
291 0x00, 0x7d, 0x7c, 0x00, 0x7b, 0x00, 0x00, 0x00, 0x7a, 0x00,
292 0x00, 0x00, 0x00, 0x00, 0x00, 0x79, 0x78, 0x00, 0x00, 0x00,
293 0x00, 0x00, 0x00, 0x77, 0x76, 0x00, 0x00, 0x75, 0x00, 0x74,
294 0x73, 0x72, 0x00, 0x00, 0x00, 0x71, 0x00, 0x70, 0x6f, 0x6e,
295 0x00, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68, 0x00, 0x00, 0x67,
296 0x66, 0x65, 0x64, 0x63, 0x62, 0x00, 0x00, 0x61, 0x60, 0x00,
297 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5e, 0x00, 0x5d,
298 0x5c, 0x5b, 0x00, 0x5a, 0x59, 0x58, 0x57, 0x56, 0x55, 0x00,
299 0x00, 0x54, 0x53, 0x52, 0x51, 0x50, 0x4f, 0x00, 0x00, 0x4e,
300 0x4d, 0x00, 0x4c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4b,
301 0x00, 0x4a, 0x49, 0x48, 0x00, 0x47, 0x46, 0x45, 0x44, 0x43,
302 0x42, 0x00, 0x00, 0x41, 0x40, 0x3f, 0x3e, 0x3d, 0x3c, 0x00,
303 0x00, 0x3b, 0x3a, 0x00, 0x39, 0x00, 0x00, 0x00, 0x38, 0x37,
304 0x36, 0x00, 0x35, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00,
305 0x00, 0x00, 0x00, 0x33, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00,
306 0x00, 0x31, 0x30, 0x00, 0x00, 0x2f, 0x00, 0x2e, 0x2d, 0x2c,
307 0x00, 0x00, 0x00, 0x2b, 0x00, 0x2a, 0x29, 0x28, 0x00, 0x27,
308 0x26, 0x25, 0x24, 0x23, 0x22, 0x00, 0x00, 0x21, 0x20, 0x1f,
309 0x1e, 0x1d, 0x1c, 0x00, 0x00, 0x1b, 0x1a, 0x00, 0x19, 0x00,
310 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x17, 0x16, 0x15,
311 0x00, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x00, 0x00, 0x0e,
312 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x00, 0x00, 0x08, 0x07, 0x00,
313 0x06, 0x00, 0x00, 0x00, 0x05, 0x04, 0x03, 0x00, 0x02, 0x00,
314 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
315 };
316
317 /*
318 * these macros call the proper transport-layer function given
319 * a particular transport
320 */
321 #define soc_transport(a, b, c, d) (*a->fcal_ops->fcal_transport)(b, c, d)
322 #define soc_transport_poll(a, b, c, d)\
323 (*a->fcal_ops->fcal_transport_poll)(b, c, d)
324 #define soc_get_lilp_map(a, b, c, d, e)\
325 (*a->fcal_ops->fcal_lilp_map)(b, c, d, e)
326 #define soc_force_lip(a, b, c, d, e)\
327 (*a->fcal_ops->fcal_force_lip)(b, c, d, e)
328 #define soc_abort(a, b, c, d, e)\
329 (*a->fcal_ops->fcal_abort_cmd)(b, c, d, e)
330 #define soc_force_reset(a, b, c, d)\
331 (*a->fcal_ops->fcal_force_reset)(b, c, d)
332 #define soc_add_ulp(a, b, c, d, e, f, g, h)\
333 (*a->fcal_ops->fcal_add_ulp)(b, c, d, e, f, g, h)
334 #define soc_remove_ulp(a, b, c, d, e)\
335 (*a->fcal_ops->fcal_remove_ulp)(b, c, d, e)
336 #define soc_take_core(a, b) (*a->fcal_ops->fcal_take_core)(b)
337
338
339 /* power management property defines (should be in a common include file?) */
340 #define PM_HARDWARE_STATE_PROP "pm-hardware-state"
341 #define PM_NEEDS_SUSPEND_RESUME "needs-suspend-resume"
342
343
344 /* node properties */
345 #define NODE_WWN_PROP "node-wwn"
346 #define PORT_WWN_PROP "port-wwn"
347 #define LIP_CNT_PROP "lip-count"
348 #define TARGET_PROP "target"
349 #define LUN_PROP "lun"
350
351
352 /*
353 * initialize this driver and install this module
354 */
355 int
_init(void)356 _init(void)
357 {
358 int i;
359
360 i = ddi_soft_state_init(&sf_state, sizeof (struct sf),
361 SF_INIT_ITEMS);
362 if (i != 0)
363 return (i);
364
365 if ((i = scsi_hba_init(&modlinkage)) != 0) {
366 ddi_soft_state_fini(&sf_state);
367 return (i);
368 }
369
370 mutex_init(&sf_global_mutex, NULL, MUTEX_DRIVER, NULL);
371 sf_watch_running = 0;
372 cv_init(&sf_watch_cv, NULL, CV_DRIVER, NULL);
373
374 if ((i = mod_install(&modlinkage)) != 0) {
375 mutex_destroy(&sf_global_mutex);
376 cv_destroy(&sf_watch_cv);
377 scsi_hba_fini(&modlinkage);
378 ddi_soft_state_fini(&sf_state);
379 return (i);
380 }
381
382 return (i);
383 }
384
385
386 /*
387 * remove this driver module from the system
388 */
389 int
_fini(void)390 _fini(void)
391 {
392 int i;
393
394 if ((i = mod_remove(&modlinkage)) == 0) {
395 scsi_hba_fini(&modlinkage);
396 mutex_destroy(&sf_global_mutex);
397 cv_destroy(&sf_watch_cv);
398 ddi_soft_state_fini(&sf_state);
399 }
400 return (i);
401 }
402
403
404 int
_info(struct modinfo * modinfop)405 _info(struct modinfo *modinfop)
406 {
407 return (mod_info(&modlinkage, modinfop));
408 }
409
410 /*
411 * Given the device number return the devinfo pointer or instance
412 */
413 /*ARGSUSED*/
414 static int
sf_info(dev_info_t * dip,ddi_info_cmd_t infocmd,void * arg,void ** result)415 sf_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
416 {
417 int instance = SF_MINOR2INST(getminor((dev_t)arg));
418 struct sf *sf;
419
420 switch (infocmd) {
421 case DDI_INFO_DEVT2DEVINFO:
422 sf = ddi_get_soft_state(sf_state, instance);
423 if (sf != NULL)
424 *result = sf->sf_dip;
425 else {
426 *result = NULL;
427 return (DDI_FAILURE);
428 }
429 break;
430
431 case DDI_INFO_DEVT2INSTANCE:
432 *result = (void *)(uintptr_t)instance;
433 break;
434 default:
435 return (DDI_FAILURE);
436 }
437 return (DDI_SUCCESS);
438 }
439
440 /*
441 * either attach or resume this driver
442 */
443 static int
sf_attach(dev_info_t * dip,ddi_attach_cmd_t cmd)444 sf_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
445 {
446 int instance;
447 int mutex_initted = FALSE;
448 uint_t ccount;
449 size_t i, real_size;
450 struct fcal_transport *handle;
451 char buf[64];
452 struct sf *sf, *tsf;
453 scsi_hba_tran_t *tran = NULL;
454 int handle_bound = FALSE;
455 kthread_t *tp;
456
457
458 switch ((int)cmd) {
459
460 case DDI_RESUME:
461
462 /*
463 * we've previously been SF_STATE_OFFLINEd by a DDI_SUSPEND,
464 * so time to undo that and get going again by forcing a
465 * lip
466 */
467
468 instance = ddi_get_instance(dip);
469
470 sf = ddi_get_soft_state(sf_state, instance);
471 SF_DEBUG(2, (sf, CE_CONT,
472 "sf_attach: DDI_RESUME for sf%d\n", instance));
473 if (sf == NULL) {
474 cmn_err(CE_WARN, "sf%d: bad soft state", instance);
475 return (DDI_FAILURE);
476 }
477
478 /*
479 * clear suspended flag so that normal operations can resume
480 */
481 mutex_enter(&sf->sf_mutex);
482 sf->sf_state &= ~SF_STATE_SUSPENDED;
483 mutex_exit(&sf->sf_mutex);
484
485 /*
486 * force a login by setting our state to offline
487 */
488 sf->sf_timer = sf_watchdog_time + SF_OFFLINE_TIMEOUT;
489 sf->sf_state = SF_STATE_OFFLINE;
490
491 /*
492 * call transport routine to register state change and
493 * ELS callback routines (to register us as a ULP)
494 */
495 soc_add_ulp(sf->sf_sochandle, sf->sf_socp,
496 sf->sf_sochandle->fcal_portno, TYPE_SCSI_FCP,
497 sf_statec_callback, sf_unsol_els_callback, NULL, sf);
498
499 /*
500 * call transport routine to force loop initialization
501 */
502 (void) soc_force_lip(sf->sf_sochandle, sf->sf_socp,
503 sf->sf_sochandle->fcal_portno, 0, FCAL_NO_LIP);
504
505 /*
506 * increment watchdog init flag, setting watchdog timeout
507 * if we are the first (since somebody has to do it)
508 */
509 mutex_enter(&sf_global_mutex);
510 if (!sf_watchdog_init++) {
511 mutex_exit(&sf_global_mutex);
512 sf_watchdog_id = timeout(sf_watch,
513 (caddr_t)0, sf_watchdog_tick);
514 } else {
515 mutex_exit(&sf_global_mutex);
516 }
517
518 return (DDI_SUCCESS);
519
520 case DDI_ATTACH:
521
522 /*
523 * this instance attaching for the first time
524 */
525
526 instance = ddi_get_instance(dip);
527
528 if (ddi_soft_state_zalloc(sf_state, instance) !=
529 DDI_SUCCESS) {
530 cmn_err(CE_WARN, "sf%d: failed to allocate soft state",
531 instance);
532 return (DDI_FAILURE);
533 }
534
535 sf = ddi_get_soft_state(sf_state, instance);
536 SF_DEBUG(4, (sf, CE_CONT,
537 "sf_attach: DDI_ATTACH for sf%d\n", instance));
538 if (sf == NULL) {
539 /* this shouldn't happen since we just allocated it */
540 cmn_err(CE_WARN, "sf%d: bad soft state", instance);
541 return (DDI_FAILURE);
542 }
543
544 /*
545 * from this point on, if there's an error, we must de-allocate
546 * soft state before returning DDI_FAILURE
547 */
548
549 if ((handle = ddi_get_parent_data(dip)) == NULL) {
550 cmn_err(CE_WARN,
551 "sf%d: failed to obtain transport handle",
552 instance);
553 goto fail;
554 }
555
556 /* fill in our soft state structure */
557 sf->sf_dip = dip;
558 sf->sf_state = SF_STATE_INIT;
559 sf->sf_throttle = handle->fcal_cmdmax;
560 sf->sf_sochandle = handle;
561 sf->sf_socp = handle->fcal_handle;
562 sf->sf_check_n_close = 0;
563
564 /* create a command/response buffer pool for this instance */
565 if (sf_add_cr_pool(sf) != DDI_SUCCESS) {
566 cmn_err(CE_WARN,
567 "sf%d: failed to allocate command/response pool",
568 instance);
569 goto fail;
570 }
571
572 /* create a a cache for this instance */
573 (void) sprintf(buf, "sf%d_cache", instance);
574 sf->sf_pkt_cache = kmem_cache_create(buf,
575 sizeof (fcal_packet_t) + sizeof (struct sf_pkt) +
576 scsi_pkt_size(), 8,
577 sf_kmem_cache_constructor, sf_kmem_cache_destructor,
578 NULL, NULL, NULL, 0);
579 if (sf->sf_pkt_cache == NULL) {
580 cmn_err(CE_WARN, "sf%d: failed to allocate kmem cache",
581 instance);
582 goto fail;
583 }
584
585 /* set up a handle and allocate memory for DMA */
586 if (ddi_dma_alloc_handle(sf->sf_dip, sf->sf_sochandle->
587 fcal_dmaattr, DDI_DMA_DONTWAIT, NULL, &sf->
588 sf_lilp_dmahandle) != DDI_SUCCESS) {
589 cmn_err(CE_WARN,
590 "sf%d: failed to allocate dma handle for lilp map",
591 instance);
592 goto fail;
593 }
594 i = sizeof (struct fcal_lilp_map) + 1;
595 if (ddi_dma_mem_alloc(sf->sf_lilp_dmahandle,
596 i, sf->sf_sochandle->
597 fcal_accattr, DDI_DMA_CONSISTENT, DDI_DMA_DONTWAIT, NULL,
598 (caddr_t *)&sf->sf_lilp_map, &real_size,
599 &sf->sf_lilp_acchandle) != DDI_SUCCESS) {
600 cmn_err(CE_WARN, "sf%d: failed to allocate lilp map",
601 instance);
602 goto fail;
603 }
604 if (real_size < i) {
605 /* no error message ??? */
606 goto fail; /* trouble allocating memory */
607 }
608
609 /*
610 * set up the address for the DMA transfers (getting a cookie)
611 */
612 if (ddi_dma_addr_bind_handle(sf->sf_lilp_dmahandle, NULL,
613 (caddr_t)sf->sf_lilp_map, real_size,
614 DDI_DMA_READ | DDI_DMA_CONSISTENT, DDI_DMA_DONTWAIT, NULL,
615 &sf->sf_lilp_dmacookie, &ccount) != DDI_DMA_MAPPED) {
616 cmn_err(CE_WARN,
617 "sf%d: failed to bind dma handle for lilp map",
618 instance);
619 goto fail;
620 }
621 handle_bound = TRUE;
622 /* ensure only one cookie was allocated */
623 if (ccount != 1) {
624 goto fail;
625 }
626
627 /* ensure LILP map and DMA cookie addresses are even?? */
628 sf->sf_lilp_map = (struct fcal_lilp_map *)(((uintptr_t)sf->
629 sf_lilp_map + 1) & ~1);
630 sf->sf_lilp_dmacookie.dmac_address = (sf->
631 sf_lilp_dmacookie.dmac_address + 1) & ~1;
632
633 /* set up all of our mutexes and condition variables */
634 mutex_init(&sf->sf_mutex, NULL, MUTEX_DRIVER, NULL);
635 mutex_init(&sf->sf_cmd_mutex, NULL, MUTEX_DRIVER, NULL);
636 mutex_init(&sf->sf_cr_mutex, NULL, MUTEX_DRIVER, NULL);
637 mutex_init(&sf->sf_hp_daemon_mutex, NULL, MUTEX_DRIVER, NULL);
638 cv_init(&sf->sf_cr_cv, NULL, CV_DRIVER, NULL);
639 cv_init(&sf->sf_hp_daemon_cv, NULL, CV_DRIVER, NULL);
640
641 mutex_initted = TRUE;
642
643 /* create our devctl minor node */
644 if (ddi_create_minor_node(dip, "devctl", S_IFCHR,
645 SF_INST2DEVCTL_MINOR(instance),
646 DDI_NT_NEXUS, 0) != DDI_SUCCESS) {
647 cmn_err(CE_WARN, "sf%d: ddi_create_minor_node failed"
648 " for devctl", instance);
649 goto fail;
650 }
651
652 /* create fc minor node */
653 if (ddi_create_minor_node(dip, "fc", S_IFCHR,
654 SF_INST2FC_MINOR(instance), DDI_NT_FC_ATTACHMENT_POINT,
655 0) != DDI_SUCCESS) {
656 cmn_err(CE_WARN, "sf%d: ddi_create_minor_node failed"
657 " for fc", instance);
658 goto fail;
659 }
660 /* allocate a SCSI transport structure */
661 tran = scsi_hba_tran_alloc(dip, 0);
662 if (tran == NULL) {
663 /* remove all minor nodes created */
664 ddi_remove_minor_node(dip, NULL);
665 cmn_err(CE_WARN, "sf%d: scsi_hba_tran_alloc failed",
666 instance);
667 goto fail;
668 }
669
670 /* Indicate that we are 'sizeof (scsi_*(9S))' clean. */
671 scsi_size_clean(dip); /* SCSI_SIZE_CLEAN_VERIFY ok */
672
673 /* save ptr to new transport structure and fill it in */
674 sf->sf_tran = tran;
675
676 tran->tran_hba_private = sf;
677 tran->tran_tgt_private = NULL;
678 tran->tran_tgt_init = sf_scsi_tgt_init;
679 tran->tran_tgt_probe = NULL;
680 tran->tran_tgt_free = sf_scsi_tgt_free;
681
682 tran->tran_start = sf_start;
683 tran->tran_abort = sf_abort;
684 tran->tran_reset = sf_reset;
685 tran->tran_getcap = sf_getcap;
686 tran->tran_setcap = sf_setcap;
687 tran->tran_init_pkt = sf_scsi_init_pkt;
688 tran->tran_destroy_pkt = sf_scsi_destroy_pkt;
689 tran->tran_dmafree = sf_scsi_dmafree;
690 tran->tran_sync_pkt = sf_scsi_sync_pkt;
691 tran->tran_reset_notify = sf_scsi_reset_notify;
692
693 /*
694 * register event notification routines with scsa
695 */
696 tran->tran_get_eventcookie = sf_bus_get_eventcookie;
697 tran->tran_add_eventcall = sf_bus_add_eventcall;
698 tran->tran_remove_eventcall = sf_bus_remove_eventcall;
699 tran->tran_post_event = sf_bus_post_event;
700
701 /*
702 * register bus configure/unconfigure
703 */
704 tran->tran_bus_config = sf_scsi_bus_config;
705 tran->tran_bus_unconfig = sf_scsi_bus_unconfig;
706
707 /*
708 * allocate an ndi event handle
709 */
710 sf->sf_event_defs = (ndi_event_definition_t *)
711 kmem_zalloc(sizeof (sf_event_defs), KM_SLEEP);
712
713 bcopy(sf_event_defs, sf->sf_event_defs,
714 sizeof (sf_event_defs));
715
716 (void) ndi_event_alloc_hdl(dip, NULL,
717 &sf->sf_event_hdl, NDI_SLEEP);
718
719 sf->sf_events.ndi_events_version = NDI_EVENTS_REV1;
720 sf->sf_events.ndi_n_events = SF_N_NDI_EVENTS;
721 sf->sf_events.ndi_event_defs = sf->sf_event_defs;
722
723 if (ndi_event_bind_set(sf->sf_event_hdl,
724 &sf->sf_events, NDI_SLEEP) != NDI_SUCCESS) {
725 goto fail;
726 }
727
728 tran->tran_get_name = sf_scsi_get_name;
729 tran->tran_get_bus_addr = sf_scsi_get_bus_addr;
730
731 /* setup and attach SCSI hba transport */
732 if (scsi_hba_attach_setup(dip, sf->sf_sochandle->
733 fcal_dmaattr, tran, SCSI_HBA_TRAN_CLONE) != DDI_SUCCESS) {
734 cmn_err(CE_WARN, "sf%d: scsi_hba_attach_setup failed",
735 instance);
736 goto fail;
737 }
738
739 /* set up kstats */
740 if ((sf->sf_ksp = kstat_create("sf", instance, "statistics",
741 "controller", KSTAT_TYPE_RAW, sizeof (struct sf_stats),
742 KSTAT_FLAG_VIRTUAL)) == NULL) {
743 cmn_err(CE_WARN, "sf%d: failed to create kstat",
744 instance);
745 } else {
746 sf->sf_stats.version = 2;
747 (void) sprintf(sf->sf_stats.drvr_name,
748 "%s: %s", SF_NAME, sf_version);
749 sf->sf_ksp->ks_data = (void *)&sf->sf_stats;
750 sf->sf_ksp->ks_private = sf;
751 sf->sf_ksp->ks_update = sf_kstat_update;
752 kstat_install(sf->sf_ksp);
753 }
754
755 /* create the hotplug thread */
756 mutex_enter(&sf->sf_hp_daemon_mutex);
757 tp = thread_create(NULL, 0,
758 (void (*)())sf_hp_daemon, sf, 0, &p0, TS_RUN, minclsyspri);
759 sf->sf_hp_tid = tp->t_did;
760 mutex_exit(&sf->sf_hp_daemon_mutex);
761
762 /* add this soft state instance to the head of the list */
763 mutex_enter(&sf_global_mutex);
764 sf->sf_next = sf_head;
765 tsf = sf_head;
766 sf_head = sf;
767
768 /*
769 * find entry in list that has the same FC-AL handle (if any)
770 */
771 while (tsf != NULL) {
772 if (tsf->sf_socp == sf->sf_socp) {
773 break; /* found matching entry */
774 }
775 tsf = tsf->sf_next;
776 }
777
778 if (tsf != NULL) {
779 /* if we found a matching entry keep track of it */
780 sf->sf_sibling = tsf;
781 }
782
783 /*
784 * increment watchdog init flag, setting watchdog timeout
785 * if we are the first (since somebody has to do it)
786 */
787 if (!sf_watchdog_init++) {
788 mutex_exit(&sf_global_mutex);
789 sf_watchdog_tick = sf_watchdog_timeout *
790 drv_usectohz(1000000);
791 sf_watchdog_id = timeout(sf_watch,
792 NULL, sf_watchdog_tick);
793 } else {
794 mutex_exit(&sf_global_mutex);
795 }
796
797 if (tsf != NULL) {
798 /*
799 * set up matching entry to be our sibling
800 */
801 mutex_enter(&tsf->sf_mutex);
802 tsf->sf_sibling = sf;
803 mutex_exit(&tsf->sf_mutex);
804 }
805
806 /*
807 * create this property so that PM code knows we want
808 * to be suspended at PM time
809 */
810 (void) ddi_prop_update_string(DDI_DEV_T_NONE, dip,
811 PM_HARDWARE_STATE_PROP, PM_NEEDS_SUSPEND_RESUME);
812
813 /* log the fact that we have a new device */
814 ddi_report_dev(dip);
815
816 /*
817 * force a login by setting our state to offline
818 */
819 sf->sf_timer = sf_watchdog_time + SF_OFFLINE_TIMEOUT;
820 sf->sf_state = SF_STATE_OFFLINE;
821
822 /*
823 * call transport routine to register state change and
824 * ELS callback routines (to register us as a ULP)
825 */
826 soc_add_ulp(sf->sf_sochandle, sf->sf_socp,
827 sf->sf_sochandle->fcal_portno, TYPE_SCSI_FCP,
828 sf_statec_callback, sf_unsol_els_callback, NULL, sf);
829
830 /*
831 * call transport routine to force loop initialization
832 */
833 (void) soc_force_lip(sf->sf_sochandle, sf->sf_socp,
834 sf->sf_sochandle->fcal_portno, 0, FCAL_NO_LIP);
835 sf->sf_reset_time = ddi_get_lbolt64();
836 return (DDI_SUCCESS);
837
838 default:
839 return (DDI_FAILURE);
840 }
841
842 fail:
843 cmn_err(CE_WARN, "sf%d: failed to attach", instance);
844
845 /*
846 * Unbind and free event set
847 */
848 if (sf->sf_event_hdl) {
849 (void) ndi_event_unbind_set(sf->sf_event_hdl,
850 &sf->sf_events, NDI_SLEEP);
851 (void) ndi_event_free_hdl(sf->sf_event_hdl);
852 }
853
854 if (sf->sf_event_defs) {
855 kmem_free(sf->sf_event_defs, sizeof (sf_event_defs));
856 }
857
858 if (sf->sf_tran != NULL) {
859 scsi_hba_tran_free(sf->sf_tran);
860 }
861 while (sf->sf_cr_pool != NULL) {
862 sf_crpool_free(sf);
863 }
864 if (sf->sf_lilp_dmahandle != NULL) {
865 if (handle_bound) {
866 (void) ddi_dma_unbind_handle(sf->sf_lilp_dmahandle);
867 }
868 ddi_dma_free_handle(&sf->sf_lilp_dmahandle);
869 }
870 if (sf->sf_pkt_cache != NULL) {
871 kmem_cache_destroy(sf->sf_pkt_cache);
872 }
873 if (sf->sf_lilp_map != NULL) {
874 ddi_dma_mem_free(&sf->sf_lilp_acchandle);
875 }
876 if (sf->sf_ksp != NULL) {
877 kstat_delete(sf->sf_ksp);
878 }
879 if (mutex_initted) {
880 mutex_destroy(&sf->sf_mutex);
881 mutex_destroy(&sf->sf_cmd_mutex);
882 mutex_destroy(&sf->sf_cr_mutex);
883 mutex_destroy(&sf->sf_hp_daemon_mutex);
884 cv_destroy(&sf->sf_cr_cv);
885 cv_destroy(&sf->sf_hp_daemon_cv);
886 }
887 mutex_enter(&sf_global_mutex);
888
889 /*
890 * kill off the watchdog if we are the last instance
891 */
892 if (!--sf_watchdog_init) {
893 timeout_id_t tid = sf_watchdog_id;
894 mutex_exit(&sf_global_mutex);
895 (void) untimeout(tid);
896 } else {
897 mutex_exit(&sf_global_mutex);
898 }
899
900 ddi_soft_state_free(sf_state, instance);
901
902 if (tran != NULL) {
903 /* remove all minor nodes */
904 ddi_remove_minor_node(dip, NULL);
905 }
906
907 return (DDI_FAILURE);
908 }
909
910
911 /* ARGSUSED */
912 static int
sf_detach(dev_info_t * dip,ddi_detach_cmd_t cmd)913 sf_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
914 {
915 struct sf *sf;
916 int instance;
917 int i;
918 struct sf_target *target;
919 timeout_id_t tid;
920
921
922
923 /* NO OTHER THREADS ARE RUNNING */
924
925 instance = ddi_get_instance(dip);
926
927 if ((sf = ddi_get_soft_state(sf_state, instance)) == NULL) {
928 cmn_err(CE_WARN, "sf_detach, sf%d: bad soft state", instance);
929 return (DDI_FAILURE);
930 }
931
932 switch (cmd) {
933
934 case DDI_SUSPEND:
935 /*
936 * suspend our instance
937 */
938
939 SF_DEBUG(2, (sf, CE_CONT,
940 "sf_detach: DDI_SUSPEND for sf%d\n", instance));
941 /*
942 * There is a race condition in socal where while doing
943 * callbacks if a ULP removes it self from the callback list
944 * the for loop in socal may panic as cblist is junk and
945 * while trying to get cblist->next the system will panic.
946 */
947
948 /* call transport to remove our unregister our callbacks */
949 soc_remove_ulp(sf->sf_sochandle, sf->sf_socp,
950 sf->sf_sochandle->fcal_portno, TYPE_SCSI_FCP, sf);
951
952 /*
953 * begin process of clearing outstanding commands
954 * by issuing a lip
955 */
956 sf_force_lip(sf);
957
958 /*
959 * toggle the device OFFLINE in order to cause
960 * outstanding commands to drain
961 */
962 mutex_enter(&sf->sf_mutex);
963 sf->sf_lip_cnt++;
964 sf->sf_timer = sf_watchdog_time + SF_OFFLINE_TIMEOUT;
965 sf->sf_state = (SF_STATE_OFFLINE | SF_STATE_SUSPENDED);
966 for (i = 0; i < sf_max_targets; i++) {
967 target = sf->sf_targets[i];
968 if (target != NULL) {
969 struct sf_target *ntarget;
970
971 mutex_enter(&target->sft_mutex);
972 if (!(target->sft_state & SF_TARGET_OFFLINE)) {
973 target->sft_state |=
974 (SF_TARGET_BUSY | SF_TARGET_MARK);
975 }
976 /* do this for all LUNs as well */
977 for (ntarget = target->sft_next_lun;
978 ntarget;
979 ntarget = ntarget->sft_next_lun) {
980 mutex_enter(&ntarget->sft_mutex);
981 if (!(ntarget->sft_state &
982 SF_TARGET_OFFLINE)) {
983 ntarget->sft_state |=
984 (SF_TARGET_BUSY |
985 SF_TARGET_MARK);
986 }
987 mutex_exit(&ntarget->sft_mutex);
988 }
989 mutex_exit(&target->sft_mutex);
990 }
991 }
992 mutex_exit(&sf->sf_mutex);
993 mutex_enter(&sf_global_mutex);
994
995 /*
996 * kill off the watchdog if we are the last instance
997 */
998 if (!--sf_watchdog_init) {
999 tid = sf_watchdog_id;
1000 mutex_exit(&sf_global_mutex);
1001 (void) untimeout(tid);
1002 } else {
1003 mutex_exit(&sf_global_mutex);
1004 }
1005
1006 return (DDI_SUCCESS);
1007
1008 case DDI_DETACH:
1009 /*
1010 * detach this instance
1011 */
1012
1013 SF_DEBUG(2, (sf, CE_CONT,
1014 "sf_detach: DDI_DETACH for sf%d\n", instance));
1015
1016 /* remove this "sf" from the list of sf softstates */
1017 sf_softstate_unlink(sf);
1018
1019 /*
1020 * prior to taking any DDI_DETACH actions, toggle the
1021 * device OFFLINE in order to cause outstanding
1022 * commands to drain
1023 */
1024 mutex_enter(&sf->sf_mutex);
1025 sf->sf_lip_cnt++;
1026 sf->sf_timer = sf_watchdog_time + SF_OFFLINE_TIMEOUT;
1027 sf->sf_state = SF_STATE_OFFLINE;
1028 for (i = 0; i < sf_max_targets; i++) {
1029 target = sf->sf_targets[i];
1030 if (target != NULL) {
1031 struct sf_target *ntarget;
1032
1033 mutex_enter(&target->sft_mutex);
1034 if (!(target->sft_state & SF_TARGET_OFFLINE)) {
1035 target->sft_state |=
1036 (SF_TARGET_BUSY | SF_TARGET_MARK);
1037 }
1038 for (ntarget = target->sft_next_lun;
1039 ntarget;
1040 ntarget = ntarget->sft_next_lun) {
1041 mutex_enter(&ntarget->sft_mutex);
1042 if (!(ntarget->sft_state &
1043 SF_TARGET_OFFLINE)) {
1044 ntarget->sft_state |=
1045 (SF_TARGET_BUSY |
1046 SF_TARGET_MARK);
1047 }
1048 mutex_exit(&ntarget->sft_mutex);
1049 }
1050 mutex_exit(&target->sft_mutex);
1051 }
1052 }
1053 mutex_exit(&sf->sf_mutex);
1054
1055 /* call transport to remove and unregister our callbacks */
1056 soc_remove_ulp(sf->sf_sochandle, sf->sf_socp,
1057 sf->sf_sochandle->fcal_portno, TYPE_SCSI_FCP, sf);
1058
1059 /*
1060 * kill off the watchdog if we are the last instance
1061 */
1062 mutex_enter(&sf_global_mutex);
1063 if (!--sf_watchdog_init) {
1064 tid = sf_watchdog_id;
1065 mutex_exit(&sf_global_mutex);
1066 (void) untimeout(tid);
1067 } else {
1068 mutex_exit(&sf_global_mutex);
1069 }
1070
1071 /* signal sf_hp_daemon() to exit and wait for exit */
1072 mutex_enter(&sf->sf_hp_daemon_mutex);
1073 ASSERT(sf->sf_hp_tid);
1074 sf->sf_hp_exit = 1; /* flag exit */
1075 cv_signal(&sf->sf_hp_daemon_cv);
1076 mutex_exit(&sf->sf_hp_daemon_mutex);
1077 thread_join(sf->sf_hp_tid); /* wait for hotplug to exit */
1078
1079 /*
1080 * Unbind and free event set
1081 */
1082 if (sf->sf_event_hdl) {
1083 (void) ndi_event_unbind_set(sf->sf_event_hdl,
1084 &sf->sf_events, NDI_SLEEP);
1085 (void) ndi_event_free_hdl(sf->sf_event_hdl);
1086 }
1087
1088 if (sf->sf_event_defs) {
1089 kmem_free(sf->sf_event_defs, sizeof (sf_event_defs));
1090 }
1091
1092 /* detach this instance of the HBA driver */
1093 (void) scsi_hba_detach(dip);
1094 scsi_hba_tran_free(sf->sf_tran);
1095
1096 /* deallocate/unbind DMA handle for lilp map */
1097 if (sf->sf_lilp_map != NULL) {
1098 (void) ddi_dma_unbind_handle(sf->sf_lilp_dmahandle);
1099 if (sf->sf_lilp_dmahandle != NULL) {
1100 ddi_dma_free_handle(&sf->sf_lilp_dmahandle);
1101 }
1102 ddi_dma_mem_free(&sf->sf_lilp_acchandle);
1103 }
1104
1105 /*
1106 * the kmem cache must be destroyed before free'ing
1107 * up the crpools
1108 *
1109 * our finagle of "ntot" and "nfree"
1110 * causes an ASSERT failure in "sf_cr_free()"
1111 * if the kmem cache is free'd after invoking
1112 * "sf_crpool_free()".
1113 */
1114 kmem_cache_destroy(sf->sf_pkt_cache);
1115
1116 SF_DEBUG(2, (sf, CE_CONT,
1117 "sf_detach: sf_crpool_free() for instance 0x%x\n",
1118 instance));
1119 while (sf->sf_cr_pool != NULL) {
1120 /*
1121 * set ntot to nfree for this particular entry
1122 *
1123 * this causes sf_crpool_free() to update
1124 * the cr_pool list when deallocating this entry
1125 */
1126 sf->sf_cr_pool->ntot = sf->sf_cr_pool->nfree;
1127 sf_crpool_free(sf);
1128 }
1129
1130 /*
1131 * now that the cr_pool's are gone it's safe
1132 * to destroy all softstate mutex's and cv's
1133 */
1134 mutex_destroy(&sf->sf_mutex);
1135 mutex_destroy(&sf->sf_cmd_mutex);
1136 mutex_destroy(&sf->sf_cr_mutex);
1137 mutex_destroy(&sf->sf_hp_daemon_mutex);
1138 cv_destroy(&sf->sf_cr_cv);
1139 cv_destroy(&sf->sf_hp_daemon_cv);
1140
1141 /* remove all minor nodes from the device tree */
1142 ddi_remove_minor_node(dip, NULL);
1143
1144 /* remove properties created during attach() */
1145 ddi_prop_remove_all(dip);
1146
1147 /* remove kstat's if present */
1148 if (sf->sf_ksp != NULL) {
1149 kstat_delete(sf->sf_ksp);
1150 }
1151
1152 SF_DEBUG(2, (sf, CE_CONT,
1153 "sf_detach: ddi_soft_state_free() for instance 0x%x\n",
1154 instance));
1155 ddi_soft_state_free(sf_state, instance);
1156 return (DDI_SUCCESS);
1157
1158 default:
1159 SF_DEBUG(2, (sf, CE_CONT, "sf_detach: sf%d unknown cmd %x\n",
1160 instance, (int)cmd));
1161 return (DDI_FAILURE);
1162 }
1163 }
1164
1165
1166 /*
1167 * sf_softstate_unlink() - remove an sf instance from the list of softstates
1168 */
1169 static void
sf_softstate_unlink(struct sf * sf)1170 sf_softstate_unlink(struct sf *sf)
1171 {
1172 struct sf *sf_ptr;
1173 struct sf *sf_found_sibling;
1174 struct sf *sf_reposition = NULL;
1175
1176
1177 mutex_enter(&sf_global_mutex);
1178 while (sf_watch_running) {
1179 /* Busy working the list -- wait */
1180 cv_wait(&sf_watch_cv, &sf_global_mutex);
1181 }
1182 if ((sf_found_sibling = sf->sf_sibling) != NULL) {
1183 /*
1184 * we have a sibling so NULL out its reference to us
1185 */
1186 mutex_enter(&sf_found_sibling->sf_mutex);
1187 sf_found_sibling->sf_sibling = NULL;
1188 mutex_exit(&sf_found_sibling->sf_mutex);
1189 }
1190
1191 /* remove our instance from the global list */
1192 if (sf == sf_head) {
1193 /* we were at at head of the list */
1194 sf_head = sf->sf_next;
1195 } else {
1196 /* find us in the list */
1197 for (sf_ptr = sf_head;
1198 sf_ptr != NULL;
1199 sf_ptr = sf_ptr->sf_next) {
1200 if (sf_ptr == sf) {
1201 break;
1202 }
1203 /* remember this place */
1204 sf_reposition = sf_ptr;
1205 }
1206 ASSERT(sf_ptr == sf);
1207 ASSERT(sf_reposition != NULL);
1208
1209 sf_reposition->sf_next = sf_ptr->sf_next;
1210 }
1211 mutex_exit(&sf_global_mutex);
1212 }
1213
1214
1215 static int
sf_scsi_bus_config(dev_info_t * parent,uint_t flag,ddi_bus_config_op_t op,void * arg,dev_info_t ** childp)1216 sf_scsi_bus_config(dev_info_t *parent, uint_t flag,
1217 ddi_bus_config_op_t op, void *arg, dev_info_t **childp)
1218 {
1219 int64_t reset_delay;
1220 struct sf *sf;
1221
1222 sf = ddi_get_soft_state(sf_state, ddi_get_instance(parent));
1223 ASSERT(sf);
1224
1225 reset_delay = (int64_t)(USEC_TO_TICK(SF_INIT_WAIT_TIMEOUT)) -
1226 (ddi_get_lbolt64() - sf->sf_reset_time);
1227 if (reset_delay < 0)
1228 reset_delay = 0;
1229
1230 if (sf_bus_config_debug)
1231 flag |= NDI_DEVI_DEBUG;
1232
1233 return (ndi_busop_bus_config(parent, flag, op,
1234 arg, childp, (clock_t)reset_delay));
1235 }
1236
1237 static int
sf_scsi_bus_unconfig(dev_info_t * parent,uint_t flag,ddi_bus_config_op_t op,void * arg)1238 sf_scsi_bus_unconfig(dev_info_t *parent, uint_t flag,
1239 ddi_bus_config_op_t op, void *arg)
1240 {
1241 if (sf_bus_config_debug)
1242 flag |= NDI_DEVI_DEBUG;
1243
1244 return (ndi_busop_bus_unconfig(parent, flag, op, arg));
1245 }
1246
1247
1248 /*
1249 * called by transport to initialize a SCSI target
1250 */
1251 /* ARGSUSED */
1252 static int
sf_scsi_tgt_init(dev_info_t * hba_dip,dev_info_t * tgt_dip,scsi_hba_tran_t * hba_tran,struct scsi_device * sd)1253 sf_scsi_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip,
1254 scsi_hba_tran_t *hba_tran, struct scsi_device *sd)
1255 {
1256 #ifdef RAID_LUNS
1257 int lun;
1258 #else
1259 int64_t lun;
1260 #endif
1261 struct sf_target *target;
1262 struct sf *sf = (struct sf *)hba_tran->tran_hba_private;
1263 int i, t_len;
1264 unsigned int lip_cnt;
1265 unsigned char wwn[FC_WWN_SIZE];
1266
1267
1268 /* get and validate our SCSI target ID */
1269 i = sd->sd_address.a_target;
1270 if (i >= sf_max_targets) {
1271 return (DDI_NOT_WELL_FORMED);
1272 }
1273
1274 /* get our port WWN property */
1275 t_len = sizeof (wwn);
1276 if (ddi_prop_op(DDI_DEV_T_ANY, tgt_dip, PROP_LEN_AND_VAL_BUF,
1277 DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, PORT_WWN_PROP,
1278 (caddr_t)&wwn, &t_len) != DDI_SUCCESS) {
1279 /* no port WWN property - ignore the OBP stub node */
1280 return (DDI_NOT_WELL_FORMED);
1281 }
1282
1283 /* get our LIP count property */
1284 t_len = sizeof (lip_cnt);
1285 if (ddi_prop_op(DDI_DEV_T_ANY, tgt_dip, PROP_LEN_AND_VAL_BUF,
1286 DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, LIP_CNT_PROP,
1287 (caddr_t)&lip_cnt, &t_len) != DDI_SUCCESS) {
1288 return (DDI_FAILURE);
1289 }
1290 /* and our LUN property */
1291 t_len = sizeof (lun);
1292 if (ddi_prop_op(DDI_DEV_T_ANY, tgt_dip, PROP_LEN_AND_VAL_BUF,
1293 DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, "lun",
1294 (caddr_t)&lun, &t_len) != DDI_SUCCESS) {
1295 return (DDI_FAILURE);
1296 }
1297
1298 /* find the target structure for this instance */
1299 mutex_enter(&sf->sf_mutex);
1300 if ((target = sf_lookup_target(sf, wwn, lun)) == NULL) {
1301 mutex_exit(&sf->sf_mutex);
1302 return (DDI_FAILURE);
1303 }
1304
1305 mutex_enter(&target->sft_mutex);
1306 if ((sf->sf_lip_cnt == lip_cnt) && !(target->sft_state
1307 & SF_TARGET_INIT_DONE)) {
1308 /*
1309 * set links between HBA transport and target structures
1310 * and set done flag
1311 */
1312 hba_tran->tran_tgt_private = target;
1313 target->sft_tran = hba_tran;
1314 target->sft_state |= SF_TARGET_INIT_DONE;
1315 } else {
1316 /* already initialized ?? */
1317 mutex_exit(&target->sft_mutex);
1318 mutex_exit(&sf->sf_mutex);
1319 return (DDI_FAILURE);
1320 }
1321 mutex_exit(&target->sft_mutex);
1322 mutex_exit(&sf->sf_mutex);
1323
1324 return (DDI_SUCCESS);
1325 }
1326
1327
1328 /*
1329 * called by transport to free a target
1330 */
1331 /* ARGSUSED */
1332 static void
sf_scsi_tgt_free(dev_info_t * hba_dip,dev_info_t * tgt_dip,scsi_hba_tran_t * hba_tran,struct scsi_device * sd)1333 sf_scsi_tgt_free(dev_info_t *hba_dip, dev_info_t *tgt_dip,
1334 scsi_hba_tran_t *hba_tran, struct scsi_device *sd)
1335 {
1336 struct sf_target *target = hba_tran->tran_tgt_private;
1337
1338 if (target != NULL) {
1339 mutex_enter(&target->sft_mutex);
1340 target->sft_tran = NULL;
1341 target->sft_state &= ~SF_TARGET_INIT_DONE;
1342 mutex_exit(&target->sft_mutex);
1343 }
1344 }
1345
1346
1347 /*
1348 * allocator for non-std size cdb/pkt_private/status -- return TRUE iff
1349 * success, else return FALSE
1350 */
1351 /*ARGSUSED*/
1352 static int
sf_pkt_alloc_extern(struct sf * sf,struct sf_pkt * cmd,int tgtlen,int statuslen,int kf)1353 sf_pkt_alloc_extern(struct sf *sf, struct sf_pkt *cmd,
1354 int tgtlen, int statuslen, int kf)
1355 {
1356 caddr_t scbp, tgt;
1357 int failure = FALSE;
1358 struct scsi_pkt *pkt = CMD2PKT(cmd);
1359
1360
1361 tgt = scbp = NULL;
1362
1363 if (tgtlen > PKT_PRIV_LEN) {
1364 if ((tgt = kmem_zalloc(tgtlen, kf)) == NULL) {
1365 failure = TRUE;
1366 } else {
1367 cmd->cmd_flags |= CFLAG_PRIVEXTERN;
1368 pkt->pkt_private = tgt;
1369 }
1370 }
1371 if (statuslen > EXTCMDS_STATUS_SIZE) {
1372 if ((scbp = kmem_zalloc((size_t)statuslen, kf)) == NULL) {
1373 failure = TRUE;
1374 } else {
1375 cmd->cmd_flags |= CFLAG_SCBEXTERN;
1376 pkt->pkt_scbp = (opaque_t)scbp;
1377 }
1378 }
1379 if (failure) {
1380 sf_pkt_destroy_extern(sf, cmd);
1381 }
1382 return (failure);
1383 }
1384
1385
1386 /*
1387 * deallocator for non-std size cdb/pkt_private/status
1388 */
1389 static void
sf_pkt_destroy_extern(struct sf * sf,struct sf_pkt * cmd)1390 sf_pkt_destroy_extern(struct sf *sf, struct sf_pkt *cmd)
1391 {
1392 struct scsi_pkt *pkt = CMD2PKT(cmd);
1393
1394 if (cmd->cmd_flags & CFLAG_FREE) {
1395 cmn_err(CE_PANIC,
1396 "sf_scsi_impl_pktfree: freeing free packet");
1397 _NOTE(NOT_REACHED)
1398 /* NOTREACHED */
1399 }
1400 if (cmd->cmd_flags & CFLAG_SCBEXTERN) {
1401 kmem_free((caddr_t)pkt->pkt_scbp,
1402 (size_t)cmd->cmd_scblen);
1403 }
1404 if (cmd->cmd_flags & CFLAG_PRIVEXTERN) {
1405 kmem_free((caddr_t)pkt->pkt_private,
1406 (size_t)cmd->cmd_privlen);
1407 }
1408
1409 cmd->cmd_flags = CFLAG_FREE;
1410 kmem_cache_free(sf->sf_pkt_cache, (void *)cmd);
1411 }
1412
1413
1414 /*
1415 * create or initialize a SCSI packet -- called internally and
1416 * by the transport
1417 */
1418 static struct scsi_pkt *
sf_scsi_init_pkt(struct scsi_address * ap,struct scsi_pkt * pkt,struct buf * bp,int cmdlen,int statuslen,int tgtlen,int flags,int (* callback)(),caddr_t arg)1419 sf_scsi_init_pkt(struct scsi_address *ap, struct scsi_pkt *pkt,
1420 struct buf *bp, int cmdlen, int statuslen, int tgtlen,
1421 int flags, int (*callback)(), caddr_t arg)
1422 {
1423 int kf;
1424 int failure = FALSE;
1425 struct sf_pkt *cmd;
1426 struct sf *sf = ADDR2SF(ap);
1427 struct sf_target *target = ADDR2TARGET(ap);
1428 struct sf_pkt *new_cmd = NULL;
1429 struct fcal_packet *fpkt;
1430 fc_frame_header_t *hp;
1431 struct fcp_cmd *fcmd;
1432
1433
1434 /*
1435 * If we've already allocated a pkt once,
1436 * this request is for dma allocation only.
1437 */
1438 if (pkt == NULL) {
1439
1440 /*
1441 * First step of sf_scsi_init_pkt: pkt allocation
1442 */
1443 if (cmdlen > FCP_CDB_SIZE) {
1444 return (NULL);
1445 }
1446
1447 kf = (callback == SLEEP_FUNC)? KM_SLEEP: KM_NOSLEEP;
1448
1449 if ((cmd = kmem_cache_alloc(sf->sf_pkt_cache, kf)) != NULL) {
1450 /*
1451 * Selective zeroing of the pkt.
1452 */
1453
1454 cmd->cmd_flags = 0;
1455 cmd->cmd_forw = 0;
1456 cmd->cmd_back = 0;
1457 cmd->cmd_next = 0;
1458 cmd->cmd_pkt = (struct scsi_pkt *)((char *)cmd +
1459 sizeof (struct sf_pkt) + sizeof (struct
1460 fcal_packet));
1461 cmd->cmd_fp_pkt = (struct fcal_packet *)((char *)cmd +
1462 sizeof (struct sf_pkt));
1463 cmd->cmd_fp_pkt->fcal_pkt_private = (opaque_t)cmd;
1464 cmd->cmd_state = SF_STATE_IDLE;
1465 cmd->cmd_pkt->pkt_ha_private = (opaque_t)cmd;
1466 cmd->cmd_pkt->pkt_scbp = (opaque_t)cmd->cmd_scsi_scb;
1467 cmd->cmd_pkt->pkt_comp = NULL;
1468 cmd->cmd_pkt->pkt_flags = 0;
1469 cmd->cmd_pkt->pkt_time = 0;
1470 cmd->cmd_pkt->pkt_resid = 0;
1471 cmd->cmd_pkt->pkt_reason = 0;
1472 cmd->cmd_cdblen = (uchar_t)cmdlen;
1473 cmd->cmd_scblen = statuslen;
1474 cmd->cmd_privlen = tgtlen;
1475 cmd->cmd_pkt->pkt_address = *ap;
1476
1477 /* zero pkt_private */
1478 (int *)(cmd->cmd_pkt->pkt_private =
1479 cmd->cmd_pkt_private);
1480 bzero((caddr_t)cmd->cmd_pkt->pkt_private,
1481 PKT_PRIV_LEN);
1482 } else {
1483 failure = TRUE;
1484 }
1485
1486 if (failure ||
1487 (tgtlen > PKT_PRIV_LEN) ||
1488 (statuslen > EXTCMDS_STATUS_SIZE)) {
1489 if (!failure) {
1490 /* need to allocate more space */
1491 failure = sf_pkt_alloc_extern(sf, cmd,
1492 tgtlen, statuslen, kf);
1493 }
1494 if (failure) {
1495 return (NULL);
1496 }
1497 }
1498
1499 fpkt = cmd->cmd_fp_pkt;
1500 if (cmd->cmd_block == NULL) {
1501
1502 /* allocate cmd/response pool buffers */
1503 if (sf_cr_alloc(sf, cmd, callback) == DDI_FAILURE) {
1504 sf_pkt_destroy_extern(sf, cmd);
1505 return (NULL);
1506 }
1507
1508 /* fill in the FC-AL packet */
1509 fpkt->fcal_pkt_cookie = sf->sf_socp;
1510 fpkt->fcal_pkt_comp = sf_cmd_callback;
1511 fpkt->fcal_pkt_flags = 0;
1512 fpkt->fcal_magic = FCALP_MAGIC;
1513 fpkt->fcal_socal_request.sr_soc_hdr.sh_flags =
1514 (ushort_t)(SOC_FC_HEADER |
1515 sf->sf_sochandle->fcal_portno);
1516 fpkt->fcal_socal_request.sr_soc_hdr.sh_class = 3;
1517 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_count = 1;
1518 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_flags = 0;
1519 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_seqno = 0;
1520 fpkt->fcal_socal_request.sr_dataseg[0].fc_base =
1521 (uint32_t)cmd->cmd_dmac;
1522 fpkt->fcal_socal_request.sr_dataseg[0].fc_count =
1523 sizeof (struct fcp_cmd);
1524 fpkt->fcal_socal_request.sr_dataseg[1].fc_base =
1525 (uint32_t)cmd->cmd_rsp_dmac;
1526 fpkt->fcal_socal_request.sr_dataseg[1].fc_count =
1527 FCP_MAX_RSP_IU_SIZE;
1528
1529 /* Fill in the Fabric Channel Header */
1530 hp = &fpkt->fcal_socal_request.sr_fc_frame_hdr;
1531 hp->r_ctl = R_CTL_COMMAND;
1532 hp->type = TYPE_SCSI_FCP;
1533 hp->f_ctl = F_CTL_SEQ_INITIATIVE | F_CTL_FIRST_SEQ;
1534 hp->reserved1 = 0;
1535 hp->seq_id = 0;
1536 hp->df_ctl = 0;
1537 hp->seq_cnt = 0;
1538 hp->ox_id = 0xffff;
1539 hp->rx_id = 0xffff;
1540 hp->ro = 0;
1541
1542 /* Establish the LUN */
1543 bcopy((caddr_t)&target->sft_lun.b,
1544 (caddr_t)&cmd->cmd_block->fcp_ent_addr,
1545 FCP_LUN_SIZE);
1546 *((int32_t *)&cmd->cmd_block->fcp_cntl) = 0;
1547 }
1548 cmd->cmd_pkt->pkt_cdbp = cmd->cmd_block->fcp_cdb;
1549
1550 mutex_enter(&target->sft_pkt_mutex);
1551
1552 target->sft_pkt_tail->cmd_forw = cmd;
1553 cmd->cmd_back = target->sft_pkt_tail;
1554 cmd->cmd_forw = (struct sf_pkt *)&target->sft_pkt_head;
1555 target->sft_pkt_tail = cmd;
1556
1557 mutex_exit(&target->sft_pkt_mutex);
1558 new_cmd = cmd; /* for later cleanup if needed */
1559 } else {
1560 /* pkt already exists -- just a request for DMA allocation */
1561 cmd = PKT2CMD(pkt);
1562 fpkt = cmd->cmd_fp_pkt;
1563 }
1564
1565 /* zero cdb (bzero is too slow) */
1566 bzero((caddr_t)cmd->cmd_pkt->pkt_cdbp, cmdlen);
1567
1568 /*
1569 * Second step of sf_scsi_init_pkt: dma allocation
1570 * Set up dma info
1571 */
1572 if ((bp != NULL) && (bp->b_bcount != 0)) {
1573 int cmd_flags, dma_flags;
1574 int rval = 0;
1575 uint_t dmacookie_count;
1576
1577 /* there is a buffer and some data to transfer */
1578
1579 /* set up command and DMA flags */
1580 cmd_flags = cmd->cmd_flags;
1581 if (bp->b_flags & B_READ) {
1582 /* a read */
1583 cmd_flags &= ~CFLAG_DMASEND;
1584 dma_flags = DDI_DMA_READ;
1585 } else {
1586 /* a write */
1587 cmd_flags |= CFLAG_DMASEND;
1588 dma_flags = DDI_DMA_WRITE;
1589 }
1590 if (flags & PKT_CONSISTENT) {
1591 cmd_flags |= CFLAG_CMDIOPB;
1592 dma_flags |= DDI_DMA_CONSISTENT;
1593 }
1594
1595 /* ensure we have a DMA handle */
1596 if (cmd->cmd_dmahandle == NULL) {
1597 rval = ddi_dma_alloc_handle(sf->sf_dip,
1598 sf->sf_sochandle->fcal_dmaattr, callback, arg,
1599 &cmd->cmd_dmahandle);
1600 }
1601
1602 if (rval == 0) {
1603 /* bind our DMA handle to our buffer */
1604 rval = ddi_dma_buf_bind_handle(cmd->cmd_dmahandle, bp,
1605 dma_flags, callback, arg, &cmd->cmd_dmacookie,
1606 &dmacookie_count);
1607 }
1608
1609 if (rval != 0) {
1610 /* DMA failure */
1611 SF_DEBUG(2, (sf, CE_CONT, "ddi_dma_buf.. failed\n"));
1612 switch (rval) {
1613 case DDI_DMA_NORESOURCES:
1614 bioerror(bp, 0);
1615 break;
1616 case DDI_DMA_BADATTR:
1617 case DDI_DMA_NOMAPPING:
1618 bioerror(bp, EFAULT);
1619 break;
1620 case DDI_DMA_TOOBIG:
1621 default:
1622 bioerror(bp, EINVAL);
1623 break;
1624 }
1625 /* clear valid flag */
1626 cmd->cmd_flags = cmd_flags & ~CFLAG_DMAVALID;
1627 if (new_cmd != NULL) {
1628 /* destroy packet if we just created it */
1629 sf_scsi_destroy_pkt(ap, new_cmd->cmd_pkt);
1630 }
1631 return (NULL);
1632 }
1633
1634 ASSERT(dmacookie_count == 1);
1635 /* set up amt to transfer and set valid flag */
1636 cmd->cmd_dmacount = bp->b_bcount;
1637 cmd->cmd_flags = cmd_flags | CFLAG_DMAVALID;
1638
1639 ASSERT(cmd->cmd_dmahandle != NULL);
1640 }
1641
1642 /* set up FC-AL packet */
1643 fcmd = cmd->cmd_block;
1644
1645 if (cmd->cmd_flags & CFLAG_DMAVALID) {
1646 if (cmd->cmd_flags & CFLAG_DMASEND) {
1647 /* DMA write */
1648 fcmd->fcp_cntl.cntl_read_data = 0;
1649 fcmd->fcp_cntl.cntl_write_data = 1;
1650 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_type =
1651 CQ_TYPE_IO_WRITE;
1652 } else {
1653 /* DMA read */
1654 fcmd->fcp_cntl.cntl_read_data = 1;
1655 fcmd->fcp_cntl.cntl_write_data = 0;
1656 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_type =
1657 CQ_TYPE_IO_READ;
1658 }
1659 fpkt->fcal_socal_request.sr_dataseg[2].fc_base =
1660 (uint32_t)cmd->cmd_dmacookie.dmac_address;
1661 fpkt->fcal_socal_request.sr_dataseg[2].fc_count =
1662 cmd->cmd_dmacookie.dmac_size;
1663 fpkt->fcal_socal_request.sr_soc_hdr.sh_seg_cnt = 3;
1664 fpkt->fcal_socal_request.sr_soc_hdr.sh_byte_cnt =
1665 cmd->cmd_dmacookie.dmac_size;
1666 fcmd->fcp_data_len = cmd->cmd_dmacookie.dmac_size;
1667 } else {
1668 /* not a read or write */
1669 fcmd->fcp_cntl.cntl_read_data = 0;
1670 fcmd->fcp_cntl.cntl_write_data = 0;
1671 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_type = CQ_TYPE_SIMPLE;
1672 fpkt->fcal_socal_request.sr_soc_hdr.sh_seg_cnt = 2;
1673 fpkt->fcal_socal_request.sr_soc_hdr.sh_byte_cnt =
1674 sizeof (struct fcp_cmd);
1675 fcmd->fcp_data_len = 0;
1676 }
1677 fcmd->fcp_cntl.cntl_qtype = FCP_QTYPE_SIMPLE;
1678
1679 return (cmd->cmd_pkt);
1680 }
1681
1682
1683 /*
1684 * destroy a SCSI packet -- called internally and by the transport
1685 */
1686 static void
sf_scsi_destroy_pkt(struct scsi_address * ap,struct scsi_pkt * pkt)1687 sf_scsi_destroy_pkt(struct scsi_address *ap, struct scsi_pkt *pkt)
1688 {
1689 struct sf_pkt *cmd = PKT2CMD(pkt);
1690 struct sf *sf = ADDR2SF(ap);
1691 struct sf_target *target = ADDR2TARGET(ap);
1692 struct fcal_packet *fpkt = cmd->cmd_fp_pkt;
1693
1694
1695 if (cmd->cmd_flags & CFLAG_DMAVALID) {
1696 /* DMA was set up -- clean up */
1697 (void) ddi_dma_unbind_handle(cmd->cmd_dmahandle);
1698 cmd->cmd_flags ^= CFLAG_DMAVALID;
1699 }
1700
1701 /* take this packet off the doubly-linked list */
1702 mutex_enter(&target->sft_pkt_mutex);
1703 cmd->cmd_back->cmd_forw = cmd->cmd_forw;
1704 cmd->cmd_forw->cmd_back = cmd->cmd_back;
1705 mutex_exit(&target->sft_pkt_mutex);
1706
1707 fpkt->fcal_pkt_flags = 0;
1708 /* free the packet */
1709 if ((cmd->cmd_flags &
1710 (CFLAG_FREE | CFLAG_PRIVEXTERN | CFLAG_SCBEXTERN)) == 0) {
1711 /* just a regular packet */
1712 ASSERT(cmd->cmd_state != SF_STATE_ISSUED);
1713 cmd->cmd_flags = CFLAG_FREE;
1714 kmem_cache_free(sf->sf_pkt_cache, (void *)cmd);
1715 } else {
1716 /* a packet with extra memory */
1717 sf_pkt_destroy_extern(sf, cmd);
1718 }
1719 }
1720
1721
1722 /*
1723 * called by transport to unbind DMA handle
1724 */
1725 /* ARGSUSED */
1726 static void
sf_scsi_dmafree(struct scsi_address * ap,struct scsi_pkt * pkt)1727 sf_scsi_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt)
1728 {
1729 struct sf_pkt *cmd = PKT2CMD(pkt);
1730
1731
1732 if (cmd->cmd_flags & CFLAG_DMAVALID) {
1733 (void) ddi_dma_unbind_handle(cmd->cmd_dmahandle);
1734 cmd->cmd_flags ^= CFLAG_DMAVALID;
1735 }
1736
1737 }
1738
1739
1740 /*
1741 * called by transport to synchronize CPU and I/O views of memory
1742 */
1743 /* ARGSUSED */
1744 static void
sf_scsi_sync_pkt(struct scsi_address * ap,struct scsi_pkt * pkt)1745 sf_scsi_sync_pkt(struct scsi_address *ap, struct scsi_pkt *pkt)
1746 {
1747 struct sf_pkt *cmd = PKT2CMD(pkt);
1748
1749
1750 if (cmd->cmd_flags & CFLAG_DMAVALID) {
1751 if (ddi_dma_sync(cmd->cmd_dmahandle, (off_t)0, (size_t)0,
1752 (cmd->cmd_flags & CFLAG_DMASEND) ?
1753 DDI_DMA_SYNC_FORDEV : DDI_DMA_SYNC_FORCPU) !=
1754 DDI_SUCCESS) {
1755 cmn_err(CE_WARN, "sf: sync pkt failed");
1756 }
1757 }
1758 }
1759
1760
1761 /*
1762 * routine for reset notification setup, to register or cancel. -- called
1763 * by transport
1764 */
1765 static int
sf_scsi_reset_notify(struct scsi_address * ap,int flag,void (* callback)(caddr_t),caddr_t arg)1766 sf_scsi_reset_notify(struct scsi_address *ap, int flag,
1767 void (*callback)(caddr_t), caddr_t arg)
1768 {
1769 struct sf *sf = ADDR2SF(ap);
1770
1771 return (scsi_hba_reset_notify_setup(ap, flag, callback, arg,
1772 &sf->sf_mutex, &sf->sf_reset_notify_listf));
1773 }
1774
1775
1776 /*
1777 * called by transport to get port WWN property (except sun4u)
1778 */
1779 /* ARGSUSED */
1780 static int
sf_scsi_get_name(struct scsi_device * sd,char * name,int len)1781 sf_scsi_get_name(struct scsi_device *sd, char *name, int len)
1782 {
1783 char tbuf[(FC_WWN_SIZE*2)+1];
1784 unsigned char wwn[FC_WWN_SIZE];
1785 int i, lun;
1786 dev_info_t *tgt_dip;
1787
1788 tgt_dip = sd->sd_dev;
1789 i = sizeof (wwn);
1790 if (ddi_prop_op(DDI_DEV_T_ANY, tgt_dip, PROP_LEN_AND_VAL_BUF,
1791 DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, PORT_WWN_PROP,
1792 (caddr_t)&wwn, &i) != DDI_SUCCESS) {
1793 name[0] = '\0';
1794 return (0);
1795 }
1796 i = sizeof (lun);
1797 if (ddi_prop_op(DDI_DEV_T_ANY, tgt_dip, PROP_LEN_AND_VAL_BUF,
1798 DDI_PROP_DONTPASS | DDI_PROP_CANSLEEP, "lun",
1799 (caddr_t)&lun, &i) != DDI_SUCCESS) {
1800 name[0] = '\0';
1801 return (0);
1802 }
1803 for (i = 0; i < FC_WWN_SIZE; i++)
1804 (void) sprintf(&tbuf[i << 1], "%02x", wwn[i]);
1805 (void) sprintf(name, "w%s,%x", tbuf, lun);
1806 return (1);
1807 }
1808
1809
1810 /*
1811 * called by transport to get target soft AL-PA (except sun4u)
1812 */
1813 /* ARGSUSED */
1814 static int
sf_scsi_get_bus_addr(struct scsi_device * sd,char * name,int len)1815 sf_scsi_get_bus_addr(struct scsi_device *sd, char *name, int len)
1816 {
1817 struct sf_target *target = ADDR2TARGET(&sd->sd_address);
1818
1819 if (target == NULL)
1820 return (0);
1821
1822 (void) sprintf(name, "%x", target->sft_al_pa);
1823 return (1);
1824 }
1825
1826
1827 /*
1828 * add to the command/response buffer pool for this sf instance
1829 */
1830 static int
sf_add_cr_pool(struct sf * sf)1831 sf_add_cr_pool(struct sf *sf)
1832 {
1833 int cmd_buf_size;
1834 size_t real_cmd_buf_size;
1835 int rsp_buf_size;
1836 size_t real_rsp_buf_size;
1837 uint_t i, ccount;
1838 struct sf_cr_pool *ptr;
1839 struct sf_cr_free_elem *cptr;
1840 caddr_t dptr, eptr;
1841 ddi_dma_cookie_t cmd_cookie;
1842 ddi_dma_cookie_t rsp_cookie;
1843 int cmd_bound = FALSE, rsp_bound = FALSE;
1844
1845
1846 /* allocate room for the pool */
1847 if ((ptr = kmem_zalloc(sizeof (struct sf_cr_pool), KM_NOSLEEP)) ==
1848 NULL) {
1849 return (DDI_FAILURE);
1850 }
1851
1852 /* allocate a DMA handle for the command pool */
1853 if (ddi_dma_alloc_handle(sf->sf_dip, sf->sf_sochandle->fcal_dmaattr,
1854 DDI_DMA_DONTWAIT, NULL, &ptr->cmd_dma_handle) != DDI_SUCCESS) {
1855 goto fail;
1856 }
1857
1858 /*
1859 * Get a piece of memory in which to put commands
1860 */
1861 cmd_buf_size = (sizeof (struct fcp_cmd) * SF_ELEMS_IN_POOL + 7) & ~7;
1862 if (ddi_dma_mem_alloc(ptr->cmd_dma_handle, cmd_buf_size,
1863 sf->sf_sochandle->fcal_accattr, DDI_DMA_CONSISTENT,
1864 DDI_DMA_DONTWAIT, NULL, (caddr_t *)&ptr->cmd_base,
1865 &real_cmd_buf_size, &ptr->cmd_acc_handle) != DDI_SUCCESS) {
1866 goto fail;
1867 }
1868
1869 /* bind the DMA handle to an address */
1870 if (ddi_dma_addr_bind_handle(ptr->cmd_dma_handle, NULL,
1871 ptr->cmd_base, real_cmd_buf_size,
1872 DDI_DMA_WRITE | DDI_DMA_CONSISTENT, DDI_DMA_DONTWAIT,
1873 NULL, &cmd_cookie, &ccount) != DDI_DMA_MAPPED) {
1874 goto fail;
1875 }
1876 cmd_bound = TRUE;
1877 /* ensure only one cookie was allocated */
1878 if (ccount != 1) {
1879 goto fail;
1880 }
1881
1882 /* allocate a DMA handle for the response pool */
1883 if (ddi_dma_alloc_handle(sf->sf_dip, sf->sf_sochandle->fcal_dmaattr,
1884 DDI_DMA_DONTWAIT, NULL, &ptr->rsp_dma_handle) != DDI_SUCCESS) {
1885 goto fail;
1886 }
1887
1888 /*
1889 * Get a piece of memory in which to put responses
1890 */
1891 rsp_buf_size = FCP_MAX_RSP_IU_SIZE * SF_ELEMS_IN_POOL;
1892 if (ddi_dma_mem_alloc(ptr->rsp_dma_handle, rsp_buf_size,
1893 sf->sf_sochandle->fcal_accattr, DDI_DMA_CONSISTENT,
1894 DDI_DMA_DONTWAIT, NULL, (caddr_t *)&ptr->rsp_base,
1895 &real_rsp_buf_size, &ptr->rsp_acc_handle) != DDI_SUCCESS) {
1896 goto fail;
1897 }
1898
1899 /* bind the DMA handle to an address */
1900 if (ddi_dma_addr_bind_handle(ptr->rsp_dma_handle, NULL,
1901 ptr->rsp_base, real_rsp_buf_size,
1902 DDI_DMA_READ | DDI_DMA_CONSISTENT, DDI_DMA_DONTWAIT,
1903 NULL, &rsp_cookie, &ccount) != DDI_DMA_MAPPED) {
1904 goto fail;
1905 }
1906 rsp_bound = TRUE;
1907 /* ensure only one cookie was allocated */
1908 if (ccount != 1) {
1909 goto fail;
1910 }
1911
1912 /*
1913 * Generate a (cmd/rsp structure) free list
1914 */
1915 /* ensure ptr points to start of long word (8-byte block) */
1916 dptr = (caddr_t)((uintptr_t)(ptr->cmd_base) + 7 & ~7);
1917 /* keep track of actual size after moving pointer */
1918 real_cmd_buf_size -= (dptr - ptr->cmd_base);
1919 eptr = ptr->rsp_base;
1920
1921 /* set actual total number of entries */
1922 ptr->ntot = min((real_cmd_buf_size / sizeof (struct fcp_cmd)),
1923 (real_rsp_buf_size / FCP_MAX_RSP_IU_SIZE));
1924 ptr->nfree = ptr->ntot;
1925 ptr->free = (struct sf_cr_free_elem *)ptr->cmd_base;
1926 ptr->sf = sf;
1927
1928 /* set up DMA for each pair of entries */
1929 i = 0;
1930 while (i < ptr->ntot) {
1931 cptr = (struct sf_cr_free_elem *)dptr;
1932 dptr += sizeof (struct fcp_cmd);
1933
1934 cptr->next = (struct sf_cr_free_elem *)dptr;
1935 cptr->rsp = eptr;
1936
1937 cptr->cmd_dmac = cmd_cookie.dmac_address +
1938 (uint32_t)((caddr_t)cptr - ptr->cmd_base);
1939
1940 cptr->rsp_dmac = rsp_cookie.dmac_address +
1941 (uint32_t)((caddr_t)eptr - ptr->rsp_base);
1942
1943 eptr += FCP_MAX_RSP_IU_SIZE;
1944 i++;
1945 }
1946
1947 /* terminate the list */
1948 cptr->next = NULL;
1949
1950 /* add this list at front of current one */
1951 mutex_enter(&sf->sf_cr_mutex);
1952 ptr->next = sf->sf_cr_pool;
1953 sf->sf_cr_pool = ptr;
1954 sf->sf_cr_pool_cnt++;
1955 mutex_exit(&sf->sf_cr_mutex);
1956
1957 return (DDI_SUCCESS);
1958
1959 fail:
1960 /* we failed so clean up */
1961 if (ptr->cmd_dma_handle != NULL) {
1962 if (cmd_bound) {
1963 (void) ddi_dma_unbind_handle(ptr->cmd_dma_handle);
1964 }
1965 ddi_dma_free_handle(&ptr->cmd_dma_handle);
1966 }
1967
1968 if (ptr->rsp_dma_handle != NULL) {
1969 if (rsp_bound) {
1970 (void) ddi_dma_unbind_handle(ptr->rsp_dma_handle);
1971 }
1972 ddi_dma_free_handle(&ptr->rsp_dma_handle);
1973 }
1974
1975 if (ptr->cmd_base != NULL) {
1976 ddi_dma_mem_free(&ptr->cmd_acc_handle);
1977 }
1978
1979 if (ptr->rsp_base != NULL) {
1980 ddi_dma_mem_free(&ptr->rsp_acc_handle);
1981 }
1982
1983 kmem_free((caddr_t)ptr, sizeof (struct sf_cr_pool));
1984 return (DDI_FAILURE);
1985 }
1986
1987
1988 /*
1989 * allocate a command/response buffer from the pool, allocating more
1990 * in the pool as needed
1991 */
1992 static int
sf_cr_alloc(struct sf * sf,struct sf_pkt * cmd,int (* func)())1993 sf_cr_alloc(struct sf *sf, struct sf_pkt *cmd, int (*func)())
1994 {
1995 struct sf_cr_pool *ptr;
1996 struct sf_cr_free_elem *cptr;
1997
1998
1999 mutex_enter(&sf->sf_cr_mutex);
2000
2001 try_again:
2002
2003 /* find a free buffer in the existing pool */
2004 ptr = sf->sf_cr_pool;
2005 while (ptr != NULL) {
2006 if (ptr->nfree != 0) {
2007 ptr->nfree--;
2008 break;
2009 } else {
2010 ptr = ptr->next;
2011 }
2012 }
2013
2014 /* did we find a free buffer ? */
2015 if (ptr != NULL) {
2016 /* we found a free buffer -- take it off the free list */
2017 cptr = ptr->free;
2018 ptr->free = cptr->next;
2019 mutex_exit(&sf->sf_cr_mutex);
2020 /* set up the command to use the buffer pair */
2021 cmd->cmd_block = (struct fcp_cmd *)cptr;
2022 cmd->cmd_dmac = cptr->cmd_dmac;
2023 cmd->cmd_rsp_dmac = cptr->rsp_dmac;
2024 cmd->cmd_rsp_block = (struct fcp_rsp *)cptr->rsp;
2025 cmd->cmd_cr_pool = ptr;
2026 return (DDI_SUCCESS); /* success */
2027 }
2028
2029 /* no free buffer available -- can we allocate more ? */
2030 if (sf->sf_cr_pool_cnt < SF_CR_POOL_MAX) {
2031 /* we need to allocate more buffer pairs */
2032 if (sf->sf_cr_flag) {
2033 /* somebody already allocating for this instance */
2034 if (func == SLEEP_FUNC) {
2035 /* user wants to wait */
2036 cv_wait(&sf->sf_cr_cv, &sf->sf_cr_mutex);
2037 /* we've been woken so go try again */
2038 goto try_again;
2039 }
2040 /* user does not want to wait */
2041 mutex_exit(&sf->sf_cr_mutex);
2042 sf->sf_stats.cralloc_failures++;
2043 return (DDI_FAILURE); /* give up */
2044 }
2045 /* set flag saying we're allocating */
2046 sf->sf_cr_flag = 1;
2047 mutex_exit(&sf->sf_cr_mutex);
2048 /* add to our pool */
2049 if (sf_add_cr_pool(sf) != DDI_SUCCESS) {
2050 /* couldn't add to our pool for some reason */
2051 mutex_enter(&sf->sf_cr_mutex);
2052 sf->sf_cr_flag = 0;
2053 cv_broadcast(&sf->sf_cr_cv);
2054 mutex_exit(&sf->sf_cr_mutex);
2055 sf->sf_stats.cralloc_failures++;
2056 return (DDI_FAILURE); /* give up */
2057 }
2058 /*
2059 * clear flag saying we're allocating and tell all other
2060 * that care
2061 */
2062 mutex_enter(&sf->sf_cr_mutex);
2063 sf->sf_cr_flag = 0;
2064 cv_broadcast(&sf->sf_cr_cv);
2065 /* now that we have more buffers try again */
2066 goto try_again;
2067 }
2068
2069 /* we don't have room to allocate any more buffers */
2070 mutex_exit(&sf->sf_cr_mutex);
2071 sf->sf_stats.cralloc_failures++;
2072 return (DDI_FAILURE); /* give up */
2073 }
2074
2075
2076 /*
2077 * free a cmd/response buffer pair in our pool
2078 */
2079 static void
sf_cr_free(struct sf_cr_pool * cp,struct sf_pkt * cmd)2080 sf_cr_free(struct sf_cr_pool *cp, struct sf_pkt *cmd)
2081 {
2082 struct sf *sf = cp->sf;
2083 struct sf_cr_free_elem *elem;
2084
2085 elem = (struct sf_cr_free_elem *)cmd->cmd_block;
2086 elem->rsp = (caddr_t)cmd->cmd_rsp_block;
2087 elem->cmd_dmac = cmd->cmd_dmac;
2088 elem->rsp_dmac = cmd->cmd_rsp_dmac;
2089
2090 mutex_enter(&sf->sf_cr_mutex);
2091 cp->nfree++;
2092 ASSERT(cp->nfree <= cp->ntot);
2093
2094 elem->next = cp->free;
2095 cp->free = elem;
2096 mutex_exit(&sf->sf_cr_mutex);
2097 }
2098
2099
2100 /*
2101 * free our pool of cmd/response buffers
2102 */
2103 static void
sf_crpool_free(struct sf * sf)2104 sf_crpool_free(struct sf *sf)
2105 {
2106 struct sf_cr_pool *cp, *prev;
2107
2108 prev = NULL;
2109 mutex_enter(&sf->sf_cr_mutex);
2110 cp = sf->sf_cr_pool;
2111 while (cp != NULL) {
2112 if (cp->nfree == cp->ntot) {
2113 if (prev != NULL) {
2114 prev->next = cp->next;
2115 } else {
2116 sf->sf_cr_pool = cp->next;
2117 }
2118 sf->sf_cr_pool_cnt--;
2119 mutex_exit(&sf->sf_cr_mutex);
2120
2121 (void) ddi_dma_unbind_handle(cp->cmd_dma_handle);
2122 ddi_dma_free_handle(&cp->cmd_dma_handle);
2123 (void) ddi_dma_unbind_handle(cp->rsp_dma_handle);
2124 ddi_dma_free_handle(&cp->rsp_dma_handle);
2125 ddi_dma_mem_free(&cp->cmd_acc_handle);
2126 ddi_dma_mem_free(&cp->rsp_acc_handle);
2127 kmem_free((caddr_t)cp, sizeof (struct sf_cr_pool));
2128 return;
2129 }
2130 prev = cp;
2131 cp = cp->next;
2132 }
2133 mutex_exit(&sf->sf_cr_mutex);
2134 }
2135
2136
2137 /* ARGSUSED */
2138 static int
sf_kmem_cache_constructor(void * buf,void * arg,int size)2139 sf_kmem_cache_constructor(void *buf, void *arg, int size)
2140 {
2141 struct sf_pkt *cmd = buf;
2142
2143 mutex_init(&cmd->cmd_abort_mutex, NULL, MUTEX_DRIVER, NULL);
2144 cmd->cmd_block = NULL;
2145 cmd->cmd_dmahandle = NULL;
2146 return (0);
2147 }
2148
2149
2150 /* ARGSUSED */
2151 static void
sf_kmem_cache_destructor(void * buf,void * size)2152 sf_kmem_cache_destructor(void *buf, void *size)
2153 {
2154 struct sf_pkt *cmd = buf;
2155
2156 if (cmd->cmd_dmahandle != NULL) {
2157 ddi_dma_free_handle(&cmd->cmd_dmahandle);
2158 }
2159
2160 if (cmd->cmd_block != NULL) {
2161 sf_cr_free(cmd->cmd_cr_pool, cmd);
2162 }
2163 mutex_destroy(&cmd->cmd_abort_mutex);
2164 }
2165
2166
2167 /*
2168 * called by transport when a state change occurs
2169 */
2170 static void
sf_statec_callback(void * arg,int msg)2171 sf_statec_callback(void *arg, int msg)
2172 {
2173 struct sf *sf = (struct sf *)arg;
2174 struct sf_target *target;
2175 int i;
2176 struct sf_pkt *cmd;
2177 struct scsi_pkt *pkt;
2178
2179
2180
2181 switch (msg) {
2182
2183 case FCAL_STATUS_LOOP_ONLINE: {
2184 uchar_t al_pa; /* to save AL-PA */
2185 int ret; /* ret value from getmap */
2186 int lip_cnt; /* to save current count */
2187 int cnt; /* map length */
2188
2189 /*
2190 * the loop has gone online
2191 */
2192 SF_DEBUG(1, (sf, CE_CONT, "sf%d: loop online\n",
2193 ddi_get_instance(sf->sf_dip)));
2194 mutex_enter(&sf->sf_mutex);
2195 sf->sf_lip_cnt++;
2196 sf->sf_state = SF_STATE_ONLINING;
2197 mutex_exit(&sf->sf_mutex);
2198
2199 /* scan each target hash queue */
2200 for (i = 0; i < SF_NUM_HASH_QUEUES; i++) {
2201 target = sf->sf_wwn_lists[i];
2202 while (target != NULL) {
2203 /*
2204 * foreach target, if it's not offline then
2205 * mark it as busy
2206 */
2207 mutex_enter(&target->sft_mutex);
2208 if (!(target->sft_state & SF_TARGET_OFFLINE))
2209 target->sft_state |= (SF_TARGET_BUSY
2210 | SF_TARGET_MARK);
2211 #ifdef DEBUG
2212 /*
2213 * for debugging, print out info on any
2214 * pending commands (left hanging)
2215 */
2216 cmd = target->sft_pkt_head;
2217 while (cmd != (struct sf_pkt *)&target->
2218 sft_pkt_head) {
2219 if (cmd->cmd_state ==
2220 SF_STATE_ISSUED) {
2221 SF_DEBUG(1, (sf, CE_CONT,
2222 "cmd 0x%p pending "
2223 "after lip\n",
2224 (void *)cmd->cmd_fp_pkt));
2225 }
2226 cmd = cmd->cmd_forw;
2227 }
2228 #endif
2229 mutex_exit(&target->sft_mutex);
2230 target = target->sft_next;
2231 }
2232 }
2233
2234 /*
2235 * since the loop has just gone online get a new map from
2236 * the transport
2237 */
2238 if ((ret = soc_get_lilp_map(sf->sf_sochandle, sf->sf_socp,
2239 sf->sf_sochandle->fcal_portno, (uint32_t)sf->
2240 sf_lilp_dmacookie.dmac_address, 1)) != FCAL_SUCCESS) {
2241 if (sf_core && (sf_core & SF_CORE_LILP_FAILED)) {
2242 (void) soc_take_core(sf->sf_sochandle,
2243 sf->sf_socp);
2244 sf_core = 0;
2245 }
2246 sf_log(sf, CE_WARN,
2247 "!soc lilp map failed status=0x%x\n", ret);
2248 mutex_enter(&sf->sf_mutex);
2249 sf->sf_timer = sf_watchdog_time + SF_OFFLINE_TIMEOUT;
2250 sf->sf_lip_cnt++;
2251 sf->sf_state = SF_STATE_OFFLINE;
2252 mutex_exit(&sf->sf_mutex);
2253 return;
2254 }
2255
2256 /* ensure consistent view of DMA memory */
2257 (void) ddi_dma_sync(sf->sf_lilp_dmahandle, (off_t)0, (size_t)0,
2258 DDI_DMA_SYNC_FORKERNEL);
2259
2260 /* how many entries in map ? */
2261 cnt = sf->sf_lilp_map->lilp_length;
2262 if (cnt >= SF_MAX_LILP_ENTRIES) {
2263 sf_log(sf, CE_WARN, "invalid lilp map\n");
2264 return;
2265 }
2266
2267 mutex_enter(&sf->sf_mutex);
2268 sf->sf_device_count = cnt - 1;
2269 sf->sf_al_pa = sf->sf_lilp_map->lilp_myalpa;
2270 lip_cnt = sf->sf_lip_cnt;
2271 al_pa = sf->sf_al_pa;
2272
2273 SF_DEBUG(1, (sf, CE_CONT,
2274 "!lilp map has %d entries, al_pa is %x\n", cnt, al_pa));
2275
2276 /*
2277 * since the last entry of the map may be mine (common) check
2278 * for that, and if it is we have one less entry to look at
2279 */
2280 if (sf->sf_lilp_map->lilp_alpalist[cnt-1] == al_pa) {
2281 cnt--;
2282 }
2283 /* If we didn't get a valid loop map enable all targets */
2284 if (sf->sf_lilp_map->lilp_magic == FCAL_BADLILP_MAGIC) {
2285 for (i = 0; i < sizeof (sf_switch_to_alpa); i++)
2286 sf->sf_lilp_map->lilp_alpalist[i] =
2287 sf_switch_to_alpa[i];
2288 cnt = i;
2289 sf->sf_device_count = cnt - 1;
2290 }
2291 if (sf->sf_device_count == 0) {
2292 sf_finish_init(sf, lip_cnt);
2293 mutex_exit(&sf->sf_mutex);
2294 break;
2295 }
2296 mutex_exit(&sf->sf_mutex);
2297
2298 SF_DEBUG(2, (sf, CE_WARN,
2299 "!statec_callback: starting with %d targets\n",
2300 sf->sf_device_count));
2301
2302 /* scan loop map, logging into all ports (except mine) */
2303 for (i = 0; i < cnt; i++) {
2304 SF_DEBUG(1, (sf, CE_CONT,
2305 "!lilp map entry %d = %x,%x\n", i,
2306 sf->sf_lilp_map->lilp_alpalist[i],
2307 sf_alpa_to_switch[
2308 sf->sf_lilp_map->lilp_alpalist[i]]));
2309 /* is this entry for somebody else ? */
2310 if (sf->sf_lilp_map->lilp_alpalist[i] != al_pa) {
2311 /* do a PLOGI to this port */
2312 if (!sf_login(sf, LA_ELS_PLOGI,
2313 sf->sf_lilp_map->lilp_alpalist[i],
2314 sf->sf_lilp_map->lilp_alpalist[cnt-1],
2315 lip_cnt)) {
2316 /* a problem logging in */
2317 mutex_enter(&sf->sf_mutex);
2318 if (lip_cnt == sf->sf_lip_cnt) {
2319 /*
2320 * problem not from a new LIP
2321 */
2322 sf->sf_device_count--;
2323 ASSERT(sf->sf_device_count
2324 >= 0);
2325 if (sf->sf_device_count == 0) {
2326 sf_finish_init(sf,
2327 lip_cnt);
2328 }
2329 }
2330 mutex_exit(&sf->sf_mutex);
2331 }
2332 }
2333 }
2334 break;
2335 }
2336
2337 case FCAL_STATUS_ERR_OFFLINE:
2338 /*
2339 * loop has gone offline due to an error
2340 */
2341 SF_DEBUG(1, (sf, CE_CONT, "sf%d: loop offline\n",
2342 ddi_get_instance(sf->sf_dip)));
2343 mutex_enter(&sf->sf_mutex);
2344 sf->sf_lip_cnt++;
2345 sf->sf_timer = sf_watchdog_time + SF_OFFLINE_TIMEOUT;
2346 if (!sf->sf_online_timer) {
2347 sf->sf_online_timer = sf_watchdog_time +
2348 SF_ONLINE_TIMEOUT;
2349 }
2350 /*
2351 * if we are suspended, preserve the SF_STATE_SUSPENDED flag,
2352 * since throttling logic in sf_watch() depends on
2353 * preservation of this flag while device is suspended
2354 */
2355 if (sf->sf_state & SF_STATE_SUSPENDED) {
2356 sf->sf_state |= SF_STATE_OFFLINE;
2357 SF_DEBUG(1, (sf, CE_CONT,
2358 "sf_statec_callback, sf%d: "
2359 "got FCAL_STATE_OFFLINE during DDI_SUSPEND\n",
2360 ddi_get_instance(sf->sf_dip)));
2361 } else {
2362 sf->sf_state = SF_STATE_OFFLINE;
2363 }
2364
2365 /* scan each possible target on the loop */
2366 for (i = 0; i < sf_max_targets; i++) {
2367 target = sf->sf_targets[i];
2368 while (target != NULL) {
2369 mutex_enter(&target->sft_mutex);
2370 if (!(target->sft_state & SF_TARGET_OFFLINE))
2371 target->sft_state |= (SF_TARGET_BUSY
2372 | SF_TARGET_MARK);
2373 mutex_exit(&target->sft_mutex);
2374 target = target->sft_next_lun;
2375 }
2376 }
2377 mutex_exit(&sf->sf_mutex);
2378 break;
2379
2380 case FCAL_STATE_RESET: {
2381 struct sf_els_hdr *privp; /* ptr to private list */
2382 struct sf_els_hdr *tmpp1; /* tmp prev hdr ptr */
2383 struct sf_els_hdr *tmpp2; /* tmp next hdr ptr */
2384 struct sf_els_hdr *head; /* to save our private list */
2385 struct fcal_packet *fpkt; /* ptr to pkt in hdr */
2386
2387 /*
2388 * a transport reset
2389 */
2390 SF_DEBUG(1, (sf, CE_CONT, "!sf%d: soc reset\n",
2391 ddi_get_instance(sf->sf_dip)));
2392 tmpp1 = head = NULL;
2393 mutex_enter(&sf->sf_mutex);
2394 sf->sf_lip_cnt++;
2395 sf->sf_timer = sf_watchdog_time + SF_RESET_TIMEOUT;
2396 /*
2397 * if we are suspended, preserve the SF_STATE_SUSPENDED flag,
2398 * since throttling logic in sf_watch() depends on
2399 * preservation of this flag while device is suspended
2400 */
2401 if (sf->sf_state & SF_STATE_SUSPENDED) {
2402 sf->sf_state |= SF_STATE_OFFLINE;
2403 SF_DEBUG(1, (sf, CE_CONT,
2404 "sf_statec_callback, sf%d: "
2405 "got FCAL_STATE_RESET during DDI_SUSPEND\n",
2406 ddi_get_instance(sf->sf_dip)));
2407 } else {
2408 sf->sf_state = SF_STATE_OFFLINE;
2409 }
2410
2411 /*
2412 * scan each possible target on the loop, looking for targets
2413 * that need callbacks ran
2414 */
2415 for (i = 0; i < sf_max_targets; i++) {
2416 target = sf->sf_targets[i];
2417 while (target != NULL) {
2418 if (!(target->sft_state & SF_TARGET_OFFLINE)) {
2419 target->sft_state |= (SF_TARGET_BUSY
2420 | SF_TARGET_MARK);
2421 mutex_exit(&sf->sf_mutex);
2422 /*
2423 * run remove event callbacks for lun
2424 *
2425 * We have a nasty race condition here
2426 * 'cause we're dropping this mutex to
2427 * run the callback and expect the
2428 * linked list to be the same.
2429 */
2430 (void) ndi_event_retrieve_cookie(
2431 sf->sf_event_hdl, target->sft_dip,
2432 FCAL_REMOVE_EVENT, &sf_remove_eid,
2433 NDI_EVENT_NOPASS);
2434 (void) ndi_event_run_callbacks(
2435 sf->sf_event_hdl,
2436 target->sft_dip,
2437 sf_remove_eid, NULL);
2438 mutex_enter(&sf->sf_mutex);
2439 }
2440 target = target->sft_next_lun;
2441 }
2442 }
2443
2444 /*
2445 * scan for ELS commands that are in transport, not complete,
2446 * and have a valid timeout, building a private list
2447 */
2448 privp = sf->sf_els_list;
2449 while (privp != NULL) {
2450 fpkt = privp->fpkt;
2451 if ((fpkt->fcal_cmd_state & FCAL_CMD_IN_TRANSPORT) &&
2452 (!(fpkt->fcal_cmd_state & FCAL_CMD_COMPLETE)) &&
2453 (privp->timeout != SF_INVALID_TIMEOUT)) {
2454 /*
2455 * cmd in transport && not complete &&
2456 * timeout valid
2457 *
2458 * move this entry from ELS input list to our
2459 * private list
2460 */
2461
2462 tmpp2 = privp->next; /* save ptr to next */
2463
2464 /* push this on private list head */
2465 privp->next = head;
2466 head = privp;
2467
2468 /* remove this entry from input list */
2469 if (tmpp1 != NULL) {
2470 /*
2471 * remove this entry from somewhere in
2472 * the middle of the list
2473 */
2474 tmpp1->next = tmpp2;
2475 if (tmpp2 != NULL) {
2476 tmpp2->prev = tmpp1;
2477 }
2478 } else {
2479 /*
2480 * remove this entry from the head
2481 * of the list
2482 */
2483 sf->sf_els_list = tmpp2;
2484 if (tmpp2 != NULL) {
2485 tmpp2->prev = NULL;
2486 }
2487 }
2488 privp = tmpp2; /* skip to next entry */
2489 } else {
2490 tmpp1 = privp; /* save ptr to prev entry */
2491 privp = privp->next; /* skip to next entry */
2492 }
2493 }
2494
2495 mutex_exit(&sf->sf_mutex);
2496
2497 /*
2498 * foreach cmd in our list free the ELS packet associated
2499 * with it
2500 */
2501 privp = head;
2502 while (privp != NULL) {
2503 fpkt = privp->fpkt;
2504 privp = privp->next;
2505 sf_els_free(fpkt);
2506 }
2507
2508 /*
2509 * scan for commands from each possible target
2510 */
2511 for (i = 0; i < sf_max_targets; i++) {
2512 target = sf->sf_targets[i];
2513 while (target != NULL) {
2514 /*
2515 * scan all active commands for this target,
2516 * looking for commands that have been issued,
2517 * are in transport, and are not yet complete
2518 * (so we can terminate them because of the
2519 * reset)
2520 */
2521 mutex_enter(&target->sft_pkt_mutex);
2522 cmd = target->sft_pkt_head;
2523 while (cmd != (struct sf_pkt *)&target->
2524 sft_pkt_head) {
2525 fpkt = cmd->cmd_fp_pkt;
2526 mutex_enter(&cmd->cmd_abort_mutex);
2527 if ((cmd->cmd_state ==
2528 SF_STATE_ISSUED) &&
2529 (fpkt->fcal_cmd_state &
2530 FCAL_CMD_IN_TRANSPORT) &&
2531 (!(fpkt->fcal_cmd_state &
2532 FCAL_CMD_COMPLETE))) {
2533 /* a command to be reset */
2534 pkt = cmd->cmd_pkt;
2535 pkt->pkt_reason = CMD_RESET;
2536 pkt->pkt_statistics |=
2537 STAT_BUS_RESET;
2538 cmd->cmd_state = SF_STATE_IDLE;
2539 mutex_exit(&cmd->
2540 cmd_abort_mutex);
2541 mutex_exit(&target->
2542 sft_pkt_mutex);
2543 if (pkt->pkt_comp != NULL) {
2544 (*pkt->pkt_comp)(pkt);
2545 }
2546 mutex_enter(&target->
2547 sft_pkt_mutex);
2548 cmd = target->sft_pkt_head;
2549 } else {
2550 mutex_exit(&cmd->
2551 cmd_abort_mutex);
2552 /* get next command */
2553 cmd = cmd->cmd_forw;
2554 }
2555 }
2556 mutex_exit(&target->sft_pkt_mutex);
2557 target = target->sft_next_lun;
2558 }
2559 }
2560
2561 /*
2562 * get packet queue for this target, resetting all remaining
2563 * commands
2564 */
2565 mutex_enter(&sf->sf_mutex);
2566 cmd = sf->sf_pkt_head;
2567 sf->sf_pkt_head = NULL;
2568 mutex_exit(&sf->sf_mutex);
2569
2570 while (cmd != NULL) {
2571 pkt = cmd->cmd_pkt;
2572 cmd = cmd->cmd_next;
2573 pkt->pkt_reason = CMD_RESET;
2574 pkt->pkt_statistics |= STAT_BUS_RESET;
2575 if (pkt->pkt_comp != NULL) {
2576 (*pkt->pkt_comp)(pkt);
2577 }
2578 }
2579 break;
2580 }
2581
2582 default:
2583 break;
2584 }
2585 }
2586
2587
2588 /*
2589 * called to send a PLOGI (N_port login) ELS request to a destination ID,
2590 * returning TRUE upon success, else returning FALSE
2591 */
2592 static int
sf_login(struct sf * sf,uchar_t els_code,uchar_t dest_id,uint_t arg1,int lip_cnt)2593 sf_login(struct sf *sf, uchar_t els_code, uchar_t dest_id, uint_t arg1,
2594 int lip_cnt)
2595 {
2596 struct la_els_logi *logi;
2597 struct sf_els_hdr *privp;
2598
2599
2600 if (sf_els_alloc(sf, dest_id, sizeof (struct sf_els_hdr),
2601 sizeof (union sf_els_cmd), sizeof (union sf_els_rsp),
2602 (caddr_t *)&privp, (caddr_t *)&logi) == NULL) {
2603 sf_log(sf, CE_WARN, "Cannot allocate PLOGI for target %x "
2604 "due to DVMA shortage.\n", sf_alpa_to_switch[dest_id]);
2605 return (FALSE);
2606 }
2607
2608 privp->lip_cnt = lip_cnt;
2609 if (els_code == LA_ELS_PLOGI) {
2610 bcopy((caddr_t)sf->sf_sochandle->fcal_loginparms,
2611 (caddr_t)&logi->common_service, sizeof (struct la_els_logi)
2612 - 4);
2613 bcopy((caddr_t)&sf->sf_sochandle->fcal_p_wwn,
2614 (caddr_t)&logi->nport_ww_name, sizeof (la_wwn_t));
2615 bcopy((caddr_t)&sf->sf_sochandle->fcal_n_wwn,
2616 (caddr_t)&logi->node_ww_name, sizeof (la_wwn_t));
2617 bzero((caddr_t)&logi->reserved, 16);
2618 } else if (els_code == LA_ELS_LOGO) {
2619 bcopy((caddr_t)&sf->sf_sochandle->fcal_p_wwn,
2620 (caddr_t)&(((struct la_els_logo *)logi)->nport_ww_name), 8);
2621 ((struct la_els_logo *)logi)->reserved = 0;
2622 ((struct la_els_logo *)logi)->nport_id[0] = 0;
2623 ((struct la_els_logo *)logi)->nport_id[1] = 0;
2624 ((struct la_els_logo *)logi)->nport_id[2] = arg1;
2625 }
2626
2627 privp->els_code = els_code;
2628 logi->ls_code = els_code;
2629 logi->mbz[0] = 0;
2630 logi->mbz[1] = 0;
2631 logi->mbz[2] = 0;
2632
2633 privp->timeout = sf_watchdog_time + SF_ELS_TIMEOUT;
2634 return (sf_els_transport(sf, privp));
2635 }
2636
2637
2638 /*
2639 * send an ELS IU via the transport,
2640 * returning TRUE upon success, else returning FALSE
2641 */
2642 static int
sf_els_transport(struct sf * sf,struct sf_els_hdr * privp)2643 sf_els_transport(struct sf *sf, struct sf_els_hdr *privp)
2644 {
2645 struct fcal_packet *fpkt = privp->fpkt;
2646
2647
2648 (void) ddi_dma_sync(privp->cmd_dma_handle, (off_t)0, (size_t)0,
2649 DDI_DMA_SYNC_FORDEV);
2650 privp->prev = NULL;
2651 mutex_enter(&sf->sf_mutex);
2652 privp->next = sf->sf_els_list;
2653 if (sf->sf_els_list != NULL) {
2654 sf->sf_els_list->prev = privp;
2655 }
2656 sf->sf_els_list = privp;
2657 mutex_exit(&sf->sf_mutex);
2658
2659 /* call the transport to send a packet */
2660 if (soc_transport(sf->sf_sochandle, fpkt, FCAL_NOSLEEP,
2661 CQ_REQUEST_1) != FCAL_TRANSPORT_SUCCESS) {
2662 mutex_enter(&sf->sf_mutex);
2663 if (privp->prev != NULL) {
2664 privp->prev->next = privp->next;
2665 }
2666 if (privp->next != NULL) {
2667 privp->next->prev = privp->prev;
2668 }
2669 if (sf->sf_els_list == privp) {
2670 sf->sf_els_list = privp->next;
2671 }
2672 mutex_exit(&sf->sf_mutex);
2673 sf_els_free(fpkt);
2674 return (FALSE); /* failure */
2675 }
2676 return (TRUE); /* success */
2677 }
2678
2679
2680 /*
2681 * called as the pkt_comp routine for ELS FC packets
2682 */
2683 static void
sf_els_callback(struct fcal_packet * fpkt)2684 sf_els_callback(struct fcal_packet *fpkt)
2685 {
2686 struct sf_els_hdr *privp = fpkt->fcal_pkt_private;
2687 struct sf *sf = privp->sf;
2688 struct sf *tsf;
2689 int tgt_id;
2690 struct la_els_logi *ptr = (struct la_els_logi *)privp->rsp;
2691 struct la_els_adisc *adisc = (struct la_els_adisc *)ptr;
2692 struct sf_target *target;
2693 short ncmds;
2694 short free_pkt = TRUE;
2695
2696
2697 /*
2698 * we've received an ELS callback, i.e. an ELS packet has arrived
2699 */
2700
2701 /* take the current packet off of the queue */
2702 mutex_enter(&sf->sf_mutex);
2703 if (privp->timeout == SF_INVALID_TIMEOUT) {
2704 mutex_exit(&sf->sf_mutex);
2705 return;
2706 }
2707 if (privp->prev != NULL) {
2708 privp->prev->next = privp->next;
2709 }
2710 if (privp->next != NULL) {
2711 privp->next->prev = privp->prev;
2712 }
2713 if (sf->sf_els_list == privp) {
2714 sf->sf_els_list = privp->next;
2715 }
2716 privp->prev = privp->next = NULL;
2717 mutex_exit(&sf->sf_mutex);
2718
2719 /* get # pkts in this callback */
2720 ncmds = fpkt->fcal_ncmds;
2721 ASSERT(ncmds >= 0);
2722 mutex_enter(&sf->sf_cmd_mutex);
2723 sf->sf_ncmds = ncmds;
2724 mutex_exit(&sf->sf_cmd_mutex);
2725
2726 /* sync idea of memory */
2727 (void) ddi_dma_sync(privp->rsp_dma_handle, (off_t)0, (size_t)0,
2728 DDI_DMA_SYNC_FORKERNEL);
2729
2730 /* was this an OK ACC msg ?? */
2731 if ((fpkt->fcal_pkt_status == FCAL_STATUS_OK) &&
2732 (ptr->ls_code == LA_ELS_ACC)) {
2733
2734 /*
2735 * this was an OK ACC pkt
2736 */
2737
2738 switch (privp->els_code) {
2739 case LA_ELS_PLOGI:
2740 /*
2741 * was able to to an N_port login
2742 */
2743 SF_DEBUG(2, (sf, CE_CONT,
2744 "!PLOGI to al_pa %x succeeded, wwn %x%x\n",
2745 privp->dest_nport_id,
2746 *((int *)&ptr->nport_ww_name.raw_wwn[0]),
2747 *((int *)&ptr->nport_ww_name.raw_wwn[4])));
2748 /* try to do a process login */
2749 if (!sf_do_prli(sf, privp, ptr)) {
2750 free_pkt = FALSE;
2751 goto fail; /* PRLI failed */
2752 }
2753 break;
2754 case LA_ELS_PRLI:
2755 /*
2756 * was able to do a process login
2757 */
2758 SF_DEBUG(2, (sf, CE_CONT,
2759 "!PRLI to al_pa %x succeeded\n",
2760 privp->dest_nport_id));
2761 /* try to do address discovery */
2762 if (sf_do_adisc(sf, privp) != 1) {
2763 free_pkt = FALSE;
2764 goto fail; /* ADISC failed */
2765 }
2766 break;
2767 case LA_ELS_ADISC:
2768 /*
2769 * found a target via ADISC
2770 */
2771
2772 SF_DEBUG(2, (sf, CE_CONT,
2773 "!ADISC to al_pa %x succeeded\n",
2774 privp->dest_nport_id));
2775
2776 /* create the target info */
2777 if ((target = sf_create_target(sf, privp,
2778 sf_alpa_to_switch[(uchar_t)adisc->hard_address],
2779 (int64_t)0))
2780 == NULL) {
2781 goto fail; /* can't create target */
2782 }
2783
2784 /*
2785 * ensure address discovered matches what we thought
2786 * it would be
2787 */
2788 if ((uchar_t)adisc->hard_address !=
2789 privp->dest_nport_id) {
2790 sf_log(sf, CE_WARN,
2791 "target 0x%x, AL-PA 0x%x and "
2792 "hard address 0x%x don't match\n",
2793 sf_alpa_to_switch[
2794 (uchar_t)privp->dest_nport_id],
2795 privp->dest_nport_id,
2796 (uchar_t)adisc->hard_address);
2797 mutex_enter(&sf->sf_mutex);
2798 sf_offline_target(sf, target);
2799 mutex_exit(&sf->sf_mutex);
2800 goto fail; /* addr doesn't match */
2801 }
2802 /*
2803 * get inquiry data from the target
2804 */
2805 if (!sf_do_reportlun(sf, privp, target)) {
2806 mutex_enter(&sf->sf_mutex);
2807 sf_offline_target(sf, target);
2808 mutex_exit(&sf->sf_mutex);
2809 free_pkt = FALSE;
2810 goto fail; /* inquiry failed */
2811 }
2812 break;
2813 default:
2814 SF_DEBUG(2, (sf, CE_CONT,
2815 "!ELS %x to al_pa %x succeeded\n",
2816 privp->els_code, privp->dest_nport_id));
2817 sf_els_free(fpkt);
2818 break;
2819 }
2820
2821 } else {
2822
2823 /*
2824 * oh oh -- this was not an OK ACC packet
2825 */
2826
2827 /* get target ID from dest loop address */
2828 tgt_id = sf_alpa_to_switch[(uchar_t)privp->dest_nport_id];
2829
2830 /* keep track of failures */
2831 sf->sf_stats.tstats[tgt_id].els_failures++;
2832 if (++(privp->retries) < sf_els_retries &&
2833 fpkt->fcal_pkt_status != FCAL_STATUS_OPEN_FAIL) {
2834 if (fpkt->fcal_pkt_status ==
2835 FCAL_STATUS_MAX_XCHG_EXCEEDED) {
2836 tsf = sf->sf_sibling;
2837 if (tsf != NULL) {
2838 mutex_enter(&tsf->sf_cmd_mutex);
2839 tsf->sf_flag = 1;
2840 tsf->sf_throttle = SF_DECR_DELTA;
2841 mutex_exit(&tsf->sf_cmd_mutex);
2842 }
2843 }
2844 privp->timeout = sf_watchdog_time + SF_ELS_TIMEOUT;
2845 privp->prev = NULL;
2846
2847 mutex_enter(&sf->sf_mutex);
2848
2849 if (privp->lip_cnt == sf->sf_lip_cnt) {
2850 SF_DEBUG(1, (sf, CE_WARN,
2851 "!ELS %x to al_pa %x failed, retrying",
2852 privp->els_code, privp->dest_nport_id));
2853 privp->next = sf->sf_els_list;
2854 if (sf->sf_els_list != NULL) {
2855 sf->sf_els_list->prev = privp;
2856 }
2857
2858 sf->sf_els_list = privp;
2859
2860 mutex_exit(&sf->sf_mutex);
2861 /* device busy? wait a bit ... */
2862 if (fpkt->fcal_pkt_status ==
2863 FCAL_STATUS_MAX_XCHG_EXCEEDED) {
2864 privp->delayed_retry = 1;
2865 return;
2866 }
2867 /* call the transport to send a pkt */
2868 if (soc_transport(sf->sf_sochandle, fpkt,
2869 FCAL_NOSLEEP, CQ_REQUEST_1) !=
2870 FCAL_TRANSPORT_SUCCESS) {
2871 mutex_enter(&sf->sf_mutex);
2872 if (privp->prev != NULL) {
2873 privp->prev->next =
2874 privp->next;
2875 }
2876 if (privp->next != NULL) {
2877 privp->next->prev =
2878 privp->prev;
2879 }
2880 if (sf->sf_els_list == privp) {
2881 sf->sf_els_list = privp->next;
2882 }
2883 mutex_exit(&sf->sf_mutex);
2884 goto fail;
2885 } else
2886 return;
2887 } else {
2888 mutex_exit(&sf->sf_mutex);
2889 goto fail;
2890 }
2891 } else {
2892 #ifdef DEBUG
2893 if (fpkt->fcal_pkt_status != 0x36 || sfdebug > 4) {
2894 SF_DEBUG(2, (sf, CE_NOTE, "ELS %x to al_pa %x failed",
2895 privp->els_code, privp->dest_nport_id));
2896 if (fpkt->fcal_pkt_status == FCAL_STATUS_OK) {
2897 SF_DEBUG(2, (sf, CE_NOTE,
2898 "els reply code = %x", ptr->ls_code));
2899 if (ptr->ls_code == LA_ELS_RJT)
2900 SF_DEBUG(1, (sf, CE_CONT,
2901 "LS_RJT reason = %x\n",
2902 *(((uint_t *)ptr) + 1)));
2903 } else
2904 SF_DEBUG(2, (sf, CE_NOTE,
2905 "fc packet status = %x",
2906 fpkt->fcal_pkt_status));
2907 }
2908 #endif
2909 goto fail;
2910 }
2911 }
2912 return; /* success */
2913 fail:
2914 mutex_enter(&sf->sf_mutex);
2915 if (sf->sf_lip_cnt == privp->lip_cnt) {
2916 sf->sf_device_count--;
2917 ASSERT(sf->sf_device_count >= 0);
2918 if (sf->sf_device_count == 0) {
2919 sf_finish_init(sf, privp->lip_cnt);
2920 }
2921 }
2922 mutex_exit(&sf->sf_mutex);
2923 if (free_pkt) {
2924 sf_els_free(fpkt);
2925 }
2926 }
2927
2928
2929 /*
2930 * send a PRLI (process login) ELS IU via the transport,
2931 * returning TRUE upon success, else returning FALSE
2932 */
2933 static int
sf_do_prli(struct sf * sf,struct sf_els_hdr * privp,struct la_els_logi * ptr)2934 sf_do_prli(struct sf *sf, struct sf_els_hdr *privp, struct la_els_logi *ptr)
2935 {
2936 struct la_els_prli *prli = (struct la_els_prli *)privp->cmd;
2937 struct fcp_prli *fprli;
2938 struct fcal_packet *fpkt = privp->fpkt;
2939
2940
2941 fpkt->fcal_socal_request.sr_dataseg[0].fc_count =
2942 sizeof (struct la_els_prli);
2943 privp->els_code = LA_ELS_PRLI;
2944 fprli = (struct fcp_prli *)prli->service_params;
2945 prli->ls_code = LA_ELS_PRLI;
2946 prli->page_length = 0x10;
2947 prli->payload_length = sizeof (struct la_els_prli);
2948 fprli->type = 0x08; /* no define here? */
2949 fprli->resvd1 = 0;
2950 fprli->orig_process_assoc_valid = 0;
2951 fprli->resp_process_assoc_valid = 0;
2952 fprli->establish_image_pair = 1;
2953 fprli->resvd2 = 0;
2954 fprli->resvd3 = 0;
2955 fprli->data_overlay_allowed = 0;
2956 fprli->initiator_fn = 1;
2957 fprli->target_fn = 0;
2958 fprli->cmd_data_mixed = 0;
2959 fprli->data_resp_mixed = 0;
2960 fprli->read_xfer_rdy_disabled = 1;
2961 fprli->write_xfer_rdy_disabled = 0;
2962
2963 bcopy((caddr_t)&ptr->nport_ww_name, (caddr_t)&privp->port_wwn,
2964 sizeof (privp->port_wwn));
2965 bcopy((caddr_t)&ptr->node_ww_name, (caddr_t)&privp->node_wwn,
2966 sizeof (privp->node_wwn));
2967
2968 privp->timeout = sf_watchdog_time + SF_ELS_TIMEOUT;
2969 return (sf_els_transport(sf, privp));
2970 }
2971
2972
2973 /*
2974 * send an ADISC (address discovery) ELS IU via the transport,
2975 * returning TRUE upon success, else returning FALSE
2976 */
2977 static int
sf_do_adisc(struct sf * sf,struct sf_els_hdr * privp)2978 sf_do_adisc(struct sf *sf, struct sf_els_hdr *privp)
2979 {
2980 struct la_els_adisc *adisc = (struct la_els_adisc *)privp->cmd;
2981 struct fcal_packet *fpkt = privp->fpkt;
2982
2983 privp->els_code = LA_ELS_ADISC;
2984 adisc->ls_code = LA_ELS_ADISC;
2985 adisc->mbz[0] = 0;
2986 adisc->mbz[1] = 0;
2987 adisc->mbz[2] = 0;
2988 adisc->hard_address = 0; /* ??? */
2989 fpkt->fcal_socal_request.sr_dataseg[0].fc_count =
2990 sizeof (struct la_els_adisc);
2991 bcopy((caddr_t)&sf->sf_sochandle->fcal_p_wwn,
2992 (caddr_t)&adisc->port_wwn, sizeof (adisc->port_wwn));
2993 bcopy((caddr_t)&sf->sf_sochandle->fcal_n_wwn,
2994 (caddr_t)&adisc->node_wwn, sizeof (adisc->node_wwn));
2995 adisc->nport_id = sf->sf_al_pa;
2996
2997 privp->timeout = sf_watchdog_time + SF_ELS_TIMEOUT;
2998 return (sf_els_transport(sf, privp));
2999 }
3000
3001
3002 static struct fcal_packet *
sf_els_alloc(struct sf * sf,uchar_t dest_id,int priv_size,int cmd_size,int rsp_size,caddr_t * rprivp,caddr_t * cmd_buf)3003 sf_els_alloc(struct sf *sf, uchar_t dest_id, int priv_size, int cmd_size,
3004 int rsp_size, caddr_t *rprivp, caddr_t *cmd_buf)
3005 {
3006 struct fcal_packet *fpkt;
3007 ddi_dma_cookie_t pcookie;
3008 ddi_dma_cookie_t rcookie;
3009 struct sf_els_hdr *privp;
3010 ddi_dma_handle_t cmd_dma_handle = NULL;
3011 ddi_dma_handle_t rsp_dma_handle = NULL;
3012 ddi_acc_handle_t cmd_acc_handle = NULL;
3013 ddi_acc_handle_t rsp_acc_handle = NULL;
3014 size_t real_size;
3015 uint_t ccount;
3016 fc_frame_header_t *hp;
3017 int cmd_bound = FALSE, rsp_bound = FALSE;
3018 caddr_t cmd = NULL;
3019 caddr_t rsp = NULL;
3020
3021 if ((fpkt = (struct fcal_packet *)kmem_zalloc(
3022 sizeof (struct fcal_packet), KM_NOSLEEP)) == NULL) {
3023 SF_DEBUG(1, (sf, CE_WARN,
3024 "Could not allocate fcal_packet for ELS\n"));
3025 return (NULL);
3026 }
3027
3028 if ((privp = (struct sf_els_hdr *)kmem_zalloc(priv_size,
3029 KM_NOSLEEP)) == NULL) {
3030 SF_DEBUG(1, (sf, CE_WARN,
3031 "Could not allocate sf_els_hdr for ELS\n"));
3032 goto fail;
3033 }
3034
3035 privp->size = priv_size;
3036 fpkt->fcal_pkt_private = (caddr_t)privp;
3037
3038 if (ddi_dma_alloc_handle(sf->sf_dip, sf->sf_sochandle->fcal_dmaattr,
3039 DDI_DMA_DONTWAIT, NULL, &cmd_dma_handle) != DDI_SUCCESS) {
3040 SF_DEBUG(1, (sf, CE_WARN,
3041 "Could not allocate DMA handle for ELS\n"));
3042 goto fail;
3043 }
3044
3045 if (ddi_dma_mem_alloc(cmd_dma_handle, cmd_size,
3046 sf->sf_sochandle->fcal_accattr, DDI_DMA_CONSISTENT,
3047 DDI_DMA_DONTWAIT, NULL, &cmd,
3048 &real_size, &cmd_acc_handle) != DDI_SUCCESS) {
3049 SF_DEBUG(1, (sf, CE_WARN,
3050 "Could not allocate DMA memory for ELS\n"));
3051 goto fail;
3052 }
3053
3054 if (real_size < cmd_size) {
3055 SF_DEBUG(1, (sf, CE_WARN,
3056 "DMA memory too small for ELS\n"));
3057 goto fail;
3058 }
3059
3060 if (ddi_dma_addr_bind_handle(cmd_dma_handle, NULL,
3061 cmd, real_size, DDI_DMA_WRITE | DDI_DMA_CONSISTENT,
3062 DDI_DMA_DONTWAIT, NULL, &pcookie, &ccount) != DDI_DMA_MAPPED) {
3063 SF_DEBUG(1, (sf, CE_WARN,
3064 "Could not bind DMA memory for ELS\n"));
3065 goto fail;
3066 }
3067 cmd_bound = TRUE;
3068
3069 if (ccount != 1) {
3070 SF_DEBUG(1, (sf, CE_WARN,
3071 "Wrong cookie count for ELS\n"));
3072 goto fail;
3073 }
3074
3075 if (ddi_dma_alloc_handle(sf->sf_dip, sf->sf_sochandle->fcal_dmaattr,
3076 DDI_DMA_DONTWAIT, NULL, &rsp_dma_handle) != DDI_SUCCESS) {
3077 SF_DEBUG(1, (sf, CE_WARN,
3078 "Could not allocate DMA handle for ELS rsp\n"));
3079 goto fail;
3080 }
3081 if (ddi_dma_mem_alloc(rsp_dma_handle, rsp_size,
3082 sf->sf_sochandle->fcal_accattr, DDI_DMA_CONSISTENT,
3083 DDI_DMA_DONTWAIT, NULL, &rsp,
3084 &real_size, &rsp_acc_handle) != DDI_SUCCESS) {
3085 SF_DEBUG(1, (sf, CE_WARN,
3086 "Could not allocate DMA memory for ELS rsp\n"));
3087 goto fail;
3088 }
3089
3090 if (real_size < rsp_size) {
3091 SF_DEBUG(1, (sf, CE_WARN,
3092 "DMA memory too small for ELS rsp\n"));
3093 goto fail;
3094 }
3095
3096 if (ddi_dma_addr_bind_handle(rsp_dma_handle, NULL,
3097 rsp, real_size, DDI_DMA_READ | DDI_DMA_CONSISTENT,
3098 DDI_DMA_DONTWAIT, NULL, &rcookie, &ccount) != DDI_DMA_MAPPED) {
3099 SF_DEBUG(1, (sf, CE_WARN,
3100 "Could not bind DMA memory for ELS rsp\n"));
3101 goto fail;
3102 }
3103 rsp_bound = TRUE;
3104
3105 if (ccount != 1) {
3106 SF_DEBUG(1, (sf, CE_WARN,
3107 "Wrong cookie count for ELS rsp\n"));
3108 goto fail;
3109 }
3110
3111 privp->cmd = cmd;
3112 privp->sf = sf;
3113 privp->cmd_dma_handle = cmd_dma_handle;
3114 privp->cmd_acc_handle = cmd_acc_handle;
3115 privp->rsp = rsp;
3116 privp->rsp_dma_handle = rsp_dma_handle;
3117 privp->rsp_acc_handle = rsp_acc_handle;
3118 privp->dest_nport_id = dest_id;
3119 privp->fpkt = fpkt;
3120
3121 fpkt->fcal_pkt_cookie = sf->sf_socp;
3122 fpkt->fcal_pkt_comp = sf_els_callback;
3123 fpkt->fcal_magic = FCALP_MAGIC;
3124 fpkt->fcal_pkt_flags = 0;
3125 fpkt->fcal_socal_request.sr_soc_hdr.sh_flags =
3126 (ushort_t)(SOC_FC_HEADER | sf->sf_sochandle->fcal_portno);
3127 fpkt->fcal_socal_request.sr_soc_hdr.sh_class = 3;
3128 fpkt->fcal_socal_request.sr_soc_hdr.sh_seg_cnt = 2;
3129 fpkt->fcal_socal_request.sr_soc_hdr.sh_byte_cnt = cmd_size;
3130 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_count = 1;
3131 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_flags = 0;
3132 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_seqno = 0;
3133 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_type = CQ_TYPE_SIMPLE;
3134 fpkt->fcal_socal_request.sr_dataseg[0].fc_base = (uint32_t)
3135 pcookie.dmac_address;
3136 fpkt->fcal_socal_request.sr_dataseg[0].fc_count = cmd_size;
3137 fpkt->fcal_socal_request.sr_dataseg[1].fc_base = (uint32_t)
3138 rcookie.dmac_address;
3139 fpkt->fcal_socal_request.sr_dataseg[1].fc_count = rsp_size;
3140
3141 /* Fill in the Fabric Channel Header */
3142 hp = &fpkt->fcal_socal_request.sr_fc_frame_hdr;
3143 hp->r_ctl = R_CTL_ELS_REQ;
3144 hp->d_id = dest_id;
3145 hp->s_id = sf->sf_al_pa;
3146 hp->type = TYPE_EXTENDED_LS;
3147 hp->reserved1 = 0;
3148 hp->f_ctl = F_CTL_SEQ_INITIATIVE | F_CTL_FIRST_SEQ;
3149 hp->seq_id = 0;
3150 hp->df_ctl = 0;
3151 hp->seq_cnt = 0;
3152 hp->ox_id = 0xffff;
3153 hp->rx_id = 0xffff;
3154 hp->ro = 0;
3155
3156 *rprivp = (caddr_t)privp;
3157 *cmd_buf = cmd;
3158 return (fpkt);
3159
3160 fail:
3161 if (cmd_dma_handle != NULL) {
3162 if (cmd_bound) {
3163 (void) ddi_dma_unbind_handle(cmd_dma_handle);
3164 }
3165 ddi_dma_free_handle(&cmd_dma_handle);
3166 privp->cmd_dma_handle = NULL;
3167 }
3168 if (rsp_dma_handle != NULL) {
3169 if (rsp_bound) {
3170 (void) ddi_dma_unbind_handle(rsp_dma_handle);
3171 }
3172 ddi_dma_free_handle(&rsp_dma_handle);
3173 privp->rsp_dma_handle = NULL;
3174 }
3175 sf_els_free(fpkt);
3176 return (NULL);
3177 }
3178
3179
3180 static void
sf_els_free(struct fcal_packet * fpkt)3181 sf_els_free(struct fcal_packet *fpkt)
3182 {
3183 struct sf_els_hdr *privp = fpkt->fcal_pkt_private;
3184
3185 if (privp != NULL) {
3186 if (privp->cmd_dma_handle != NULL) {
3187 (void) ddi_dma_unbind_handle(privp->cmd_dma_handle);
3188 ddi_dma_free_handle(&privp->cmd_dma_handle);
3189 }
3190 if (privp->cmd != NULL) {
3191 ddi_dma_mem_free(&privp->cmd_acc_handle);
3192 }
3193
3194 if (privp->rsp_dma_handle != NULL) {
3195 (void) ddi_dma_unbind_handle(privp->rsp_dma_handle);
3196 ddi_dma_free_handle(&privp->rsp_dma_handle);
3197 }
3198
3199 if (privp->rsp != NULL) {
3200 ddi_dma_mem_free(&privp->rsp_acc_handle);
3201 }
3202 if (privp->data_dma_handle) {
3203 (void) ddi_dma_unbind_handle(privp->data_dma_handle);
3204 ddi_dma_free_handle(&privp->data_dma_handle);
3205 }
3206 if (privp->data_buf) {
3207 ddi_dma_mem_free(&privp->data_acc_handle);
3208 }
3209 kmem_free(privp, privp->size);
3210 }
3211 kmem_free(fpkt, sizeof (struct fcal_packet));
3212 }
3213
3214
3215 static struct sf_target *
sf_create_target(struct sf * sf,struct sf_els_hdr * privp,int tnum,int64_t lun)3216 sf_create_target(struct sf *sf, struct sf_els_hdr *privp, int tnum, int64_t lun)
3217 {
3218 struct sf_target *target, *ntarget, *otarget, *ptarget;
3219 int hash;
3220 #ifdef RAID_LUNS
3221 int64_t orig_lun = lun;
3222
3223 /* XXXX Work around SCSA limitations. */
3224 lun = *((short *)&lun);
3225 #endif
3226 ntarget = kmem_zalloc(sizeof (struct sf_target), KM_NOSLEEP);
3227 mutex_enter(&sf->sf_mutex);
3228 if (sf->sf_lip_cnt != privp->lip_cnt) {
3229 mutex_exit(&sf->sf_mutex);
3230 if (ntarget != NULL)
3231 kmem_free(ntarget, sizeof (struct sf_target));
3232 return (NULL);
3233 }
3234
3235 target = sf_lookup_target(sf, privp->port_wwn, lun);
3236 if (lun != 0) {
3237 /*
3238 * Since LUNs != 0 are queued up after LUN == 0, find LUN == 0
3239 * and enqueue the new LUN.
3240 */
3241 if ((ptarget = sf_lookup_target(sf, privp->port_wwn,
3242 (int64_t)0)) == NULL) {
3243 /*
3244 * Yeep -- no LUN 0?
3245 */
3246 mutex_exit(&sf->sf_mutex);
3247 sf_log(sf, CE_WARN, "target 0x%x "
3248 "lun %" PRIx64 ": No LUN 0\n", tnum, lun);
3249 if (ntarget != NULL)
3250 kmem_free(ntarget, sizeof (struct sf_target));
3251 return (NULL);
3252 }
3253 mutex_enter(&ptarget->sft_mutex);
3254 if (target != NULL && ptarget->sft_lip_cnt == sf->sf_lip_cnt &&
3255 ptarget->sft_state&SF_TARGET_OFFLINE) {
3256 /* LUN 0 already finished, duplicate its state */
3257 mutex_exit(&ptarget->sft_mutex);
3258 sf_offline_target(sf, target);
3259 mutex_exit(&sf->sf_mutex);
3260 if (ntarget != NULL)
3261 kmem_free(ntarget, sizeof (struct sf_target));
3262 return (target);
3263 } else if (target != NULL) {
3264 /*
3265 * LUN 0 online or not examined yet.
3266 * Try to bring the LUN back online
3267 */
3268 mutex_exit(&ptarget->sft_mutex);
3269 mutex_enter(&target->sft_mutex);
3270 target->sft_lip_cnt = privp->lip_cnt;
3271 target->sft_state |= SF_TARGET_BUSY;
3272 target->sft_state &= ~(SF_TARGET_OFFLINE|
3273 SF_TARGET_MARK);
3274 target->sft_al_pa = (uchar_t)privp->dest_nport_id;
3275 target->sft_hard_address = sf_switch_to_alpa[tnum];
3276 mutex_exit(&target->sft_mutex);
3277 mutex_exit(&sf->sf_mutex);
3278 if (ntarget != NULL)
3279 kmem_free(ntarget, sizeof (struct sf_target));
3280 return (target);
3281 }
3282 mutex_exit(&ptarget->sft_mutex);
3283 if (ntarget == NULL) {
3284 mutex_exit(&sf->sf_mutex);
3285 return (NULL);
3286 }
3287 /* Initialize new target structure */
3288 bcopy((caddr_t)&privp->node_wwn,
3289 (caddr_t)&ntarget->sft_node_wwn, sizeof (privp->node_wwn));
3290 bcopy((caddr_t)&privp->port_wwn,
3291 (caddr_t)&ntarget->sft_port_wwn, sizeof (privp->port_wwn));
3292 ntarget->sft_lun.l = lun;
3293 #ifdef RAID_LUNS
3294 ntarget->sft_lun.l = orig_lun;
3295 ntarget->sft_raid_lun = (uint_t)lun;
3296 #endif
3297 mutex_init(&ntarget->sft_mutex, NULL, MUTEX_DRIVER, NULL);
3298 mutex_init(&ntarget->sft_pkt_mutex, NULL, MUTEX_DRIVER, NULL);
3299 /* Don't let anyone use this till we finishup init. */
3300 mutex_enter(&ntarget->sft_mutex);
3301 mutex_enter(&ntarget->sft_pkt_mutex);
3302
3303 hash = SF_HASH(privp->port_wwn, lun);
3304 ntarget->sft_next = sf->sf_wwn_lists[hash];
3305 sf->sf_wwn_lists[hash] = ntarget;
3306
3307 ntarget->sft_lip_cnt = privp->lip_cnt;
3308 ntarget->sft_al_pa = (uchar_t)privp->dest_nport_id;
3309 ntarget->sft_hard_address = sf_switch_to_alpa[tnum];
3310 ntarget->sft_device_type = DTYPE_UNKNOWN;
3311 ntarget->sft_state = SF_TARGET_BUSY;
3312 ntarget->sft_pkt_head = (struct sf_pkt *)&ntarget->
3313 sft_pkt_head;
3314 ntarget->sft_pkt_tail = (struct sf_pkt *)&ntarget->
3315 sft_pkt_head;
3316
3317 mutex_enter(&ptarget->sft_mutex);
3318 /* Traverse the list looking for this target */
3319 for (target = ptarget; target->sft_next_lun;
3320 target = target->sft_next_lun) {
3321 otarget = target->sft_next_lun;
3322 }
3323 ntarget->sft_next_lun = target->sft_next_lun;
3324 target->sft_next_lun = ntarget;
3325 mutex_exit(&ptarget->sft_mutex);
3326 mutex_exit(&ntarget->sft_pkt_mutex);
3327 mutex_exit(&ntarget->sft_mutex);
3328 mutex_exit(&sf->sf_mutex);
3329 return (ntarget);
3330
3331 }
3332 if (target != NULL && target->sft_lip_cnt == sf->sf_lip_cnt) {
3333 /* It's been touched this LIP -- duplicate WWNs */
3334 sf_offline_target(sf, target); /* And all the baby targets */
3335 mutex_exit(&sf->sf_mutex);
3336 sf_log(sf, CE_WARN, "target 0x%x, duplicate port wwns\n",
3337 tnum);
3338 if (ntarget != NULL) {
3339 kmem_free(ntarget, sizeof (struct sf_target));
3340 }
3341 return (NULL);
3342 }
3343
3344 if ((otarget = sf->sf_targets[tnum]) != NULL) {
3345 /* Someone else is in our slot */
3346 mutex_enter(&otarget->sft_mutex);
3347 if (otarget->sft_lip_cnt == sf->sf_lip_cnt) {
3348 mutex_exit(&otarget->sft_mutex);
3349 sf_offline_target(sf, otarget);
3350 if (target != NULL)
3351 sf_offline_target(sf, target);
3352 mutex_exit(&sf->sf_mutex);
3353 sf_log(sf, CE_WARN,
3354 "target 0x%x, duplicate switch settings\n", tnum);
3355 if (ntarget != NULL)
3356 kmem_free(ntarget, sizeof (struct sf_target));
3357 return (NULL);
3358 }
3359 mutex_exit(&otarget->sft_mutex);
3360 if (bcmp((caddr_t)&privp->port_wwn, (caddr_t)&otarget->
3361 sft_port_wwn, sizeof (privp->port_wwn))) {
3362 sf_offline_target(sf, otarget);
3363 mutex_exit(&sf->sf_mutex);
3364 sf_log(sf, CE_WARN, "wwn changed on target 0x%x\n",
3365 tnum);
3366 bzero((caddr_t)&sf->sf_stats.tstats[tnum],
3367 sizeof (struct sf_target_stats));
3368 mutex_enter(&sf->sf_mutex);
3369 }
3370 }
3371
3372 sf->sf_targets[tnum] = target;
3373 if ((target = sf->sf_targets[tnum]) == NULL) {
3374 if (ntarget == NULL) {
3375 mutex_exit(&sf->sf_mutex);
3376 return (NULL);
3377 }
3378 bcopy((caddr_t)&privp->node_wwn,
3379 (caddr_t)&ntarget->sft_node_wwn, sizeof (privp->node_wwn));
3380 bcopy((caddr_t)&privp->port_wwn,
3381 (caddr_t)&ntarget->sft_port_wwn, sizeof (privp->port_wwn));
3382 ntarget->sft_lun.l = lun;
3383 #ifdef RAID_LUNS
3384 ntarget->sft_lun.l = orig_lun;
3385 ntarget->sft_raid_lun = (uint_t)lun;
3386 #endif
3387 mutex_init(&ntarget->sft_mutex, NULL, MUTEX_DRIVER, NULL);
3388 mutex_init(&ntarget->sft_pkt_mutex, NULL, MUTEX_DRIVER, NULL);
3389 mutex_enter(&ntarget->sft_mutex);
3390 mutex_enter(&ntarget->sft_pkt_mutex);
3391 hash = SF_HASH(privp->port_wwn, lun); /* lun 0 */
3392 ntarget->sft_next = sf->sf_wwn_lists[hash];
3393 sf->sf_wwn_lists[hash] = ntarget;
3394
3395 target = ntarget;
3396 target->sft_lip_cnt = privp->lip_cnt;
3397 target->sft_al_pa = (uchar_t)privp->dest_nport_id;
3398 target->sft_hard_address = sf_switch_to_alpa[tnum];
3399 target->sft_device_type = DTYPE_UNKNOWN;
3400 target->sft_state = SF_TARGET_BUSY;
3401 target->sft_pkt_head = (struct sf_pkt *)&target->
3402 sft_pkt_head;
3403 target->sft_pkt_tail = (struct sf_pkt *)&target->
3404 sft_pkt_head;
3405 sf->sf_targets[tnum] = target;
3406 mutex_exit(&ntarget->sft_mutex);
3407 mutex_exit(&ntarget->sft_pkt_mutex);
3408 mutex_exit(&sf->sf_mutex);
3409 } else {
3410 mutex_enter(&target->sft_mutex);
3411 target->sft_lip_cnt = privp->lip_cnt;
3412 target->sft_state |= SF_TARGET_BUSY;
3413 target->sft_state &= ~(SF_TARGET_OFFLINE|SF_TARGET_MARK);
3414 target->sft_al_pa = (uchar_t)privp->dest_nport_id;
3415 target->sft_hard_address = sf_switch_to_alpa[tnum];
3416 mutex_exit(&target->sft_mutex);
3417 mutex_exit(&sf->sf_mutex);
3418 if (ntarget != NULL)
3419 kmem_free(ntarget, sizeof (struct sf_target));
3420 }
3421 return (target);
3422 }
3423
3424
3425 /*
3426 * find the target for a given sf instance
3427 */
3428 /* ARGSUSED */
3429 static struct sf_target *
3430 #ifdef RAID_LUNS
sf_lookup_target(struct sf * sf,uchar_t * wwn,int lun)3431 sf_lookup_target(struct sf *sf, uchar_t *wwn, int lun)
3432 #else
3433 sf_lookup_target(struct sf *sf, uchar_t *wwn, int64_t lun)
3434 #endif
3435 {
3436 int hash;
3437 struct sf_target *target;
3438
3439 ASSERT(mutex_owned(&sf->sf_mutex));
3440 hash = SF_HASH(wwn, lun);
3441
3442 target = sf->sf_wwn_lists[hash];
3443 while (target != NULL) {
3444
3445 #ifndef RAID_LUNS
3446 if (bcmp((caddr_t)wwn, (caddr_t)&target->sft_port_wwn,
3447 sizeof (target->sft_port_wwn)) == 0 &&
3448 target->sft_lun.l == lun)
3449 break;
3450 #else
3451 if (bcmp((caddr_t)wwn, (caddr_t)&target->sft_port_wwn,
3452 sizeof (target->sft_port_wwn)) == 0 &&
3453 target->sft_raid_lun == lun)
3454 break;
3455 #endif
3456 target = target->sft_next;
3457 }
3458
3459 return (target);
3460 }
3461
3462
3463 /*
3464 * Send out a REPORT_LUNS command.
3465 */
3466 static int
sf_do_reportlun(struct sf * sf,struct sf_els_hdr * privp,struct sf_target * target)3467 sf_do_reportlun(struct sf *sf, struct sf_els_hdr *privp,
3468 struct sf_target *target)
3469 {
3470 struct fcal_packet *fpkt = privp->fpkt;
3471 ddi_dma_cookie_t pcookie;
3472 ddi_dma_handle_t lun_dma_handle = NULL;
3473 ddi_acc_handle_t lun_acc_handle;
3474 uint_t ccount;
3475 size_t real_size;
3476 caddr_t lun_buf = NULL;
3477 int handle_bound = 0;
3478 fc_frame_header_t *hp = &fpkt->fcal_socal_request.sr_fc_frame_hdr;
3479 struct fcp_cmd *reportlun = (struct fcp_cmd *)privp->cmd;
3480 char *msg = "Transport";
3481
3482 if (ddi_dma_alloc_handle(sf->sf_dip, sf->sf_sochandle->fcal_dmaattr,
3483 DDI_DMA_DONTWAIT, NULL, &lun_dma_handle) != DDI_SUCCESS) {
3484 msg = "ddi_dma_alloc_handle()";
3485 goto fail;
3486 }
3487
3488 if (ddi_dma_mem_alloc(lun_dma_handle, REPORT_LUNS_SIZE,
3489 sf->sf_sochandle->fcal_accattr, DDI_DMA_CONSISTENT,
3490 DDI_DMA_DONTWAIT, NULL, &lun_buf,
3491 &real_size, &lun_acc_handle) != DDI_SUCCESS) {
3492 msg = "ddi_dma_mem_alloc()";
3493 goto fail;
3494 }
3495
3496 if (real_size < REPORT_LUNS_SIZE) {
3497 msg = "DMA mem < REPORT_LUNS_SIZE";
3498 goto fail;
3499 }
3500
3501 if (ddi_dma_addr_bind_handle(lun_dma_handle, NULL,
3502 lun_buf, real_size, DDI_DMA_READ |
3503 DDI_DMA_CONSISTENT, DDI_DMA_DONTWAIT,
3504 NULL, &pcookie, &ccount) != DDI_DMA_MAPPED) {
3505 msg = "ddi_dma_addr_bind_handle()";
3506 goto fail;
3507 }
3508 handle_bound = 1;
3509
3510 if (ccount != 1) {
3511 msg = "ccount != 1";
3512 goto fail;
3513 }
3514 privp->els_code = 0;
3515 privp->target = target;
3516 privp->data_dma_handle = lun_dma_handle;
3517 privp->data_acc_handle = lun_acc_handle;
3518 privp->data_buf = lun_buf;
3519
3520 fpkt->fcal_pkt_comp = sf_reportlun_callback;
3521 fpkt->fcal_socal_request.sr_soc_hdr.sh_seg_cnt = 3;
3522 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_type = CQ_TYPE_IO_READ;
3523 fpkt->fcal_socal_request.sr_dataseg[0].fc_count =
3524 sizeof (struct fcp_cmd);
3525 fpkt->fcal_socal_request.sr_dataseg[2].fc_base =
3526 (uint32_t)pcookie.dmac_address;
3527 fpkt->fcal_socal_request.sr_dataseg[2].fc_count = pcookie.dmac_size;
3528 fpkt->fcal_socal_request.sr_soc_hdr.sh_byte_cnt = pcookie.dmac_size;
3529 hp->r_ctl = R_CTL_COMMAND;
3530 hp->type = TYPE_SCSI_FCP;
3531 bzero((caddr_t)reportlun, sizeof (struct fcp_cmd));
3532 ((union scsi_cdb *)reportlun->fcp_cdb)->scc_cmd = SCMD_REPORT_LUNS;
3533 /* Now set the buffer size. If DDI gave us extra, that's O.K. */
3534 ((union scsi_cdb *)reportlun->fcp_cdb)->scc5_count0 =
3535 (real_size&0x0ff);
3536 ((union scsi_cdb *)reportlun->fcp_cdb)->scc5_count1 =
3537 (real_size>>8)&0x0ff;
3538 ((union scsi_cdb *)reportlun->fcp_cdb)->scc5_count2 =
3539 (real_size>>16)&0x0ff;
3540 ((union scsi_cdb *)reportlun->fcp_cdb)->scc5_count3 =
3541 (real_size>>24)&0x0ff;
3542 reportlun->fcp_cntl.cntl_read_data = 1;
3543 reportlun->fcp_cntl.cntl_write_data = 0;
3544 reportlun->fcp_data_len = pcookie.dmac_size;
3545 reportlun->fcp_cntl.cntl_qtype = FCP_QTYPE_SIMPLE;
3546
3547 (void) ddi_dma_sync(lun_dma_handle, 0, 0, DDI_DMA_SYNC_FORDEV);
3548 /* We know he's there, so this should be fast */
3549 privp->timeout = sf_watchdog_time + SF_FCP_TIMEOUT;
3550 if (sf_els_transport(sf, privp) == 1)
3551 return (1);
3552
3553 fail:
3554 sf_log(sf, CE_WARN,
3555 "%s failure for REPORTLUN to target 0x%x\n",
3556 msg, sf_alpa_to_switch[privp->dest_nport_id]);
3557 sf_els_free(fpkt);
3558 if (lun_dma_handle != NULL) {
3559 if (handle_bound)
3560 (void) ddi_dma_unbind_handle(lun_dma_handle);
3561 ddi_dma_free_handle(&lun_dma_handle);
3562 }
3563 if (lun_buf != NULL) {
3564 ddi_dma_mem_free(&lun_acc_handle);
3565 }
3566 return (0);
3567 }
3568
3569 /*
3570 * Handle the results of a REPORT_LUNS command:
3571 * Create additional targets if necessary
3572 * Initiate INQUIRYs on all LUNs.
3573 */
3574 static void
sf_reportlun_callback(struct fcal_packet * fpkt)3575 sf_reportlun_callback(struct fcal_packet *fpkt)
3576 {
3577 struct sf_els_hdr *privp = (struct sf_els_hdr *)fpkt->
3578 fcal_pkt_private;
3579 struct scsi_report_luns *ptr =
3580 (struct scsi_report_luns *)privp->data_buf;
3581 struct sf *sf = privp->sf;
3582 struct sf_target *target = privp->target;
3583 struct fcp_rsp *rsp = NULL;
3584 int delayed_retry = 0;
3585 int tid = sf_alpa_to_switch[target->sft_hard_address];
3586 int i, free_pkt = 1;
3587 short ncmds;
3588
3589 mutex_enter(&sf->sf_mutex);
3590 /* use as temporary state variable */
3591 if (privp->timeout == SF_INVALID_TIMEOUT) {
3592 mutex_exit(&sf->sf_mutex);
3593 return;
3594 }
3595 if (privp->prev)
3596 privp->prev->next = privp->next;
3597 if (privp->next)
3598 privp->next->prev = privp->prev;
3599 if (sf->sf_els_list == privp)
3600 sf->sf_els_list = privp->next;
3601 privp->prev = privp->next = NULL;
3602 mutex_exit(&sf->sf_mutex);
3603 ncmds = fpkt->fcal_ncmds;
3604 ASSERT(ncmds >= 0);
3605 mutex_enter(&sf->sf_cmd_mutex);
3606 sf->sf_ncmds = ncmds;
3607 mutex_exit(&sf->sf_cmd_mutex);
3608
3609 if (fpkt->fcal_pkt_status == FCAL_STATUS_OK) {
3610 (void) ddi_dma_sync(privp->rsp_dma_handle, 0,
3611 0, DDI_DMA_SYNC_FORKERNEL);
3612
3613 rsp = (struct fcp_rsp *)privp->rsp;
3614 }
3615 SF_DEBUG(1, (sf, CE_CONT,
3616 "!REPORTLUN to al_pa %x pkt status %x scsi status %x\n",
3617 privp->dest_nport_id,
3618 fpkt->fcal_pkt_status,
3619 rsp?rsp->fcp_u.fcp_status.scsi_status:0));
3620
3621 /* See if target simply does not support REPORT_LUNS. */
3622 if (rsp && rsp->fcp_u.fcp_status.scsi_status == STATUS_CHECK &&
3623 rsp->fcp_u.fcp_status.sense_len_set &&
3624 rsp->fcp_sense_len >=
3625 offsetof(struct scsi_extended_sense, es_qual_code)) {
3626 struct scsi_extended_sense *sense;
3627 sense = (struct scsi_extended_sense *)
3628 ((caddr_t)rsp + sizeof (struct fcp_rsp)
3629 + rsp->fcp_response_len);
3630 if (sense->es_key == KEY_ILLEGAL_REQUEST) {
3631 if (sense->es_add_code == 0x20) {
3632 /* Fake LUN 0 */
3633 SF_DEBUG(1, (sf, CE_CONT,
3634 "!REPORTLUN Faking good "
3635 "completion for alpa %x\n",
3636 privp->dest_nport_id));
3637 ptr->lun_list_len = FCP_LUN_SIZE;
3638 ptr->lun[0] = 0;
3639 rsp->fcp_u.fcp_status.scsi_status =
3640 STATUS_GOOD;
3641 } else if (sense->es_add_code == 0x25) {
3642 SF_DEBUG(1, (sf, CE_CONT,
3643 "!REPORTLUN device alpa %x "
3644 "key %x code %x\n",
3645 privp->dest_nport_id,
3646 sense->es_key, sense->es_add_code));
3647 goto fail;
3648 }
3649 } else if (sense->es_key ==
3650 KEY_UNIT_ATTENTION &&
3651 sense->es_add_code == 0x29) {
3652 SF_DEBUG(1, (sf, CE_CONT,
3653 "!REPORTLUN device alpa %x was reset\n",
3654 privp->dest_nport_id));
3655 } else {
3656 SF_DEBUG(1, (sf, CE_CONT,
3657 "!REPORTLUN device alpa %x "
3658 "key %x code %x\n",
3659 privp->dest_nport_id,
3660 sense->es_key, sense->es_add_code));
3661 /* XXXXXX The following is here to handle broken targets -- remove it later */
3662 if (sf_reportlun_forever &&
3663 sense->es_key == KEY_UNIT_ATTENTION)
3664 goto retry;
3665 /* XXXXXX */
3666 if (sense->es_key == KEY_NOT_READY)
3667 delayed_retry = 1;
3668 }
3669 }
3670
3671 if (rsp && rsp->fcp_u.fcp_status.scsi_status == STATUS_GOOD) {
3672 struct fcp_rsp_info *bep;
3673
3674 bep = (struct fcp_rsp_info *)(&rsp->
3675 fcp_response_len + 1);
3676 if (!rsp->fcp_u.fcp_status.rsp_len_set ||
3677 bep->rsp_code == FCP_NO_FAILURE) {
3678 (void) ddi_dma_sync(privp->data_dma_handle,
3679 0, 0, DDI_DMA_SYNC_FORKERNEL);
3680
3681 /* Convert from #bytes to #ints */
3682 ptr->lun_list_len = ptr->lun_list_len >> 3;
3683 SF_DEBUG(2, (sf, CE_CONT,
3684 "!REPORTLUN to al_pa %x succeeded: %d LUNs\n",
3685 privp->dest_nport_id, ptr->lun_list_len));
3686 if (!ptr->lun_list_len) {
3687 /* No LUNs? Ya gotta be kidding... */
3688 sf_log(sf, CE_WARN,
3689 "SCSI violation -- "
3690 "target 0x%x reports no LUNs\n",
3691 sf_alpa_to_switch[
3692 privp->dest_nport_id]);
3693 ptr->lun_list_len = 1;
3694 ptr->lun[0] = 0;
3695 }
3696
3697 mutex_enter(&sf->sf_mutex);
3698 if (sf->sf_lip_cnt == privp->lip_cnt) {
3699 sf->sf_device_count += ptr->lun_list_len - 1;
3700 }
3701
3702 mutex_exit(&sf->sf_mutex);
3703 for (i = 0; i < ptr->lun_list_len && privp->lip_cnt ==
3704 sf->sf_lip_cnt; i++) {
3705 struct sf_els_hdr *nprivp;
3706 struct fcal_packet *nfpkt;
3707
3708 /* LUN 0 is already in `target' */
3709 if (ptr->lun[i] != 0) {
3710 target = sf_create_target(sf,
3711 privp, tid, ptr->lun[i]);
3712 }
3713 nprivp = NULL;
3714 nfpkt = NULL;
3715 if (target) {
3716 nfpkt = sf_els_alloc(sf,
3717 target->sft_al_pa,
3718 sizeof (struct sf_els_hdr),
3719 sizeof (union sf_els_cmd),
3720 sizeof (union sf_els_rsp),
3721 (caddr_t *)&nprivp,
3722 (caddr_t *)&rsp);
3723 if (nprivp)
3724 nprivp->lip_cnt =
3725 privp->lip_cnt;
3726 }
3727 if (nfpkt && nprivp &&
3728 (sf_do_inquiry(sf, nprivp, target) ==
3729 0)) {
3730 mutex_enter(&sf->sf_mutex);
3731 if (sf->sf_lip_cnt == privp->
3732 lip_cnt) {
3733 sf->sf_device_count --;
3734 }
3735 sf_offline_target(sf, target);
3736 mutex_exit(&sf->sf_mutex);
3737 }
3738 }
3739 sf_els_free(fpkt);
3740 return;
3741 } else {
3742 SF_DEBUG(1, (sf, CE_CONT,
3743 "!REPORTLUN al_pa %x fcp failure, "
3744 "fcp_rsp_code %x scsi status %x\n",
3745 privp->dest_nport_id, bep->rsp_code,
3746 rsp ? rsp->fcp_u.fcp_status.scsi_status:0));
3747 goto fail;
3748 }
3749 }
3750 if (rsp && ((rsp->fcp_u.fcp_status.scsi_status == STATUS_BUSY) ||
3751 (rsp->fcp_u.fcp_status.scsi_status == STATUS_QFULL))) {
3752 delayed_retry = 1;
3753 }
3754
3755 if (++(privp->retries) < sf_els_retries ||
3756 (delayed_retry && privp->retries < SF_BSY_RETRIES)) {
3757 /* XXXXXX The following is here to handle broken targets -- remove it later */
3758 retry:
3759 /* XXXXXX */
3760 if (delayed_retry) {
3761 privp->retries--;
3762 privp->timeout = sf_watchdog_time + SF_BSY_TIMEOUT;
3763 privp->delayed_retry = 1;
3764 } else {
3765 privp->timeout = sf_watchdog_time + SF_FCP_TIMEOUT;
3766 }
3767
3768 privp->prev = NULL;
3769 mutex_enter(&sf->sf_mutex);
3770 if (privp->lip_cnt == sf->sf_lip_cnt) {
3771 if (!delayed_retry)
3772 SF_DEBUG(1, (sf, CE_WARN,
3773 "!REPORTLUN to al_pa %x failed, retrying\n",
3774 privp->dest_nport_id));
3775 privp->next = sf->sf_els_list;
3776 if (sf->sf_els_list != NULL)
3777 sf->sf_els_list->prev = privp;
3778 sf->sf_els_list = privp;
3779 mutex_exit(&sf->sf_mutex);
3780 if (!delayed_retry && soc_transport(sf->sf_sochandle,
3781 fpkt, FCAL_NOSLEEP, CQ_REQUEST_1) !=
3782 FCAL_TRANSPORT_SUCCESS) {
3783 mutex_enter(&sf->sf_mutex);
3784 if (privp->prev)
3785 privp->prev->next = privp->next;
3786 if (privp->next)
3787 privp->next->prev = privp->prev;
3788 if (sf->sf_els_list == privp)
3789 sf->sf_els_list = privp->next;
3790 mutex_exit(&sf->sf_mutex);
3791 goto fail;
3792 } else
3793 return;
3794 } else {
3795 mutex_exit(&sf->sf_mutex);
3796 }
3797 } else {
3798 fail:
3799
3800 /* REPORT_LUN failed -- try inquiry */
3801 if (sf_do_inquiry(sf, privp, target) != 0) {
3802 return;
3803 } else {
3804 free_pkt = 0;
3805 }
3806 mutex_enter(&sf->sf_mutex);
3807 if (sf->sf_lip_cnt == privp->lip_cnt) {
3808 sf_log(sf, CE_WARN,
3809 "!REPORTLUN to target 0x%x failed\n",
3810 sf_alpa_to_switch[privp->dest_nport_id]);
3811 sf_offline_target(sf, target);
3812 sf->sf_device_count--;
3813 ASSERT(sf->sf_device_count >= 0);
3814 if (sf->sf_device_count == 0)
3815 sf_finish_init(sf, privp->lip_cnt);
3816 }
3817 mutex_exit(&sf->sf_mutex);
3818 }
3819 if (free_pkt) {
3820 sf_els_free(fpkt);
3821 }
3822 }
3823
3824 static int
sf_do_inquiry(struct sf * sf,struct sf_els_hdr * privp,struct sf_target * target)3825 sf_do_inquiry(struct sf *sf, struct sf_els_hdr *privp,
3826 struct sf_target *target)
3827 {
3828 struct fcal_packet *fpkt = privp->fpkt;
3829 ddi_dma_cookie_t pcookie;
3830 ddi_dma_handle_t inq_dma_handle = NULL;
3831 ddi_acc_handle_t inq_acc_handle;
3832 uint_t ccount;
3833 size_t real_size;
3834 caddr_t inq_buf = NULL;
3835 int handle_bound = FALSE;
3836 fc_frame_header_t *hp = &fpkt->fcal_socal_request.sr_fc_frame_hdr;
3837 struct fcp_cmd *inq = (struct fcp_cmd *)privp->cmd;
3838 char *msg = "Transport";
3839
3840
3841 if (ddi_dma_alloc_handle(sf->sf_dip, sf->sf_sochandle->fcal_dmaattr,
3842 DDI_DMA_DONTWAIT, NULL, &inq_dma_handle) != DDI_SUCCESS) {
3843 msg = "ddi_dma_alloc_handle()";
3844 goto fail;
3845 }
3846
3847 if (ddi_dma_mem_alloc(inq_dma_handle, SUN_INQSIZE,
3848 sf->sf_sochandle->fcal_accattr, DDI_DMA_CONSISTENT,
3849 DDI_DMA_DONTWAIT, NULL, &inq_buf,
3850 &real_size, &inq_acc_handle) != DDI_SUCCESS) {
3851 msg = "ddi_dma_mem_alloc()";
3852 goto fail;
3853 }
3854
3855 if (real_size < SUN_INQSIZE) {
3856 msg = "DMA mem < inquiry size";
3857 goto fail;
3858 }
3859
3860 if (ddi_dma_addr_bind_handle(inq_dma_handle, NULL,
3861 inq_buf, real_size, DDI_DMA_READ | DDI_DMA_CONSISTENT,
3862 DDI_DMA_DONTWAIT, NULL, &pcookie, &ccount) != DDI_DMA_MAPPED) {
3863 msg = "ddi_dma_addr_bind_handle()";
3864 goto fail;
3865 }
3866 handle_bound = TRUE;
3867
3868 if (ccount != 1) {
3869 msg = "ccount != 1";
3870 goto fail;
3871 }
3872 privp->els_code = 0; /* not an ELS command */
3873 privp->target = target;
3874 privp->data_dma_handle = inq_dma_handle;
3875 privp->data_acc_handle = inq_acc_handle;
3876 privp->data_buf = inq_buf;
3877 fpkt->fcal_pkt_comp = sf_inq_callback;
3878 fpkt->fcal_socal_request.sr_soc_hdr.sh_seg_cnt = 3;
3879 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_type = CQ_TYPE_IO_READ;
3880 fpkt->fcal_socal_request.sr_dataseg[0].fc_count =
3881 sizeof (struct fcp_cmd);
3882 fpkt->fcal_socal_request.sr_dataseg[2].fc_base =
3883 (uint32_t)pcookie.dmac_address;
3884 fpkt->fcal_socal_request.sr_dataseg[2].fc_count = pcookie.dmac_size;
3885 fpkt->fcal_socal_request.sr_soc_hdr.sh_byte_cnt = pcookie.dmac_size;
3886 hp->r_ctl = R_CTL_COMMAND;
3887 hp->type = TYPE_SCSI_FCP;
3888 bzero((caddr_t)inq, sizeof (struct fcp_cmd));
3889 ((union scsi_cdb *)inq->fcp_cdb)->scc_cmd = SCMD_INQUIRY;
3890 ((union scsi_cdb *)inq->fcp_cdb)->g0_count0 = SUN_INQSIZE;
3891 bcopy((caddr_t)&target->sft_lun.b, (caddr_t)&inq->fcp_ent_addr,
3892 FCP_LUN_SIZE);
3893 inq->fcp_cntl.cntl_read_data = 1;
3894 inq->fcp_cntl.cntl_write_data = 0;
3895 inq->fcp_data_len = pcookie.dmac_size;
3896 inq->fcp_cntl.cntl_qtype = FCP_QTYPE_SIMPLE;
3897
3898 (void) ddi_dma_sync(inq_dma_handle, (off_t)0, (size_t)0,
3899 DDI_DMA_SYNC_FORDEV);
3900 privp->timeout = sf_watchdog_time + SF_FCP_TIMEOUT;
3901 SF_DEBUG(5, (sf, CE_WARN,
3902 "!Sending INQUIRY to al_pa %x lun %" PRIx64 "\n",
3903 privp->dest_nport_id,
3904 SCSA_LUN(target)));
3905 return (sf_els_transport(sf, privp));
3906
3907 fail:
3908 sf_log(sf, CE_WARN,
3909 "%s failure for INQUIRY to target 0x%x\n",
3910 msg, sf_alpa_to_switch[privp->dest_nport_id]);
3911 sf_els_free(fpkt);
3912 if (inq_dma_handle != NULL) {
3913 if (handle_bound) {
3914 (void) ddi_dma_unbind_handle(inq_dma_handle);
3915 }
3916 ddi_dma_free_handle(&inq_dma_handle);
3917 }
3918 if (inq_buf != NULL) {
3919 ddi_dma_mem_free(&inq_acc_handle);
3920 }
3921 return (FALSE);
3922 }
3923
3924
3925 /*
3926 * called as the pkt_comp routine for INQ packets
3927 */
3928 static void
sf_inq_callback(struct fcal_packet * fpkt)3929 sf_inq_callback(struct fcal_packet *fpkt)
3930 {
3931 struct sf_els_hdr *privp = (struct sf_els_hdr *)fpkt->
3932 fcal_pkt_private;
3933 struct scsi_inquiry *prt = (struct scsi_inquiry *)privp->data_buf;
3934 struct sf *sf = privp->sf;
3935 struct sf *tsf;
3936 struct sf_target *target = privp->target;
3937 struct fcp_rsp *rsp;
3938 int delayed_retry = FALSE;
3939 short ncmds;
3940
3941
3942 mutex_enter(&sf->sf_mutex);
3943 /* use as temporary state variable */
3944 if (privp->timeout == SF_INVALID_TIMEOUT) {
3945 mutex_exit(&sf->sf_mutex);
3946 return;
3947 }
3948 if (privp->prev != NULL) {
3949 privp->prev->next = privp->next;
3950 }
3951 if (privp->next != NULL) {
3952 privp->next->prev = privp->prev;
3953 }
3954 if (sf->sf_els_list == privp) {
3955 sf->sf_els_list = privp->next;
3956 }
3957 privp->prev = privp->next = NULL;
3958 mutex_exit(&sf->sf_mutex);
3959 ncmds = fpkt->fcal_ncmds;
3960 ASSERT(ncmds >= 0);
3961 mutex_enter(&sf->sf_cmd_mutex);
3962 sf->sf_ncmds = ncmds;
3963 mutex_exit(&sf->sf_cmd_mutex);
3964
3965 if (fpkt->fcal_pkt_status == FCAL_STATUS_OK) {
3966
3967 (void) ddi_dma_sync(privp->rsp_dma_handle, (off_t)0,
3968 (size_t)0, DDI_DMA_SYNC_FORKERNEL);
3969
3970 rsp = (struct fcp_rsp *)privp->rsp;
3971 SF_DEBUG(2, (sf, CE_CONT,
3972 "!INQUIRY to al_pa %x scsi status %x",
3973 privp->dest_nport_id, rsp->fcp_u.fcp_status.scsi_status));
3974
3975 if ((rsp->fcp_u.fcp_status.scsi_status == STATUS_GOOD) &&
3976 !rsp->fcp_u.fcp_status.resid_over &&
3977 (!rsp->fcp_u.fcp_status.resid_under ||
3978 ((SUN_INQSIZE - rsp->fcp_resid) >= SUN_MIN_INQLEN))) {
3979 struct fcp_rsp_info *bep;
3980
3981 bep = (struct fcp_rsp_info *)(&rsp->
3982 fcp_response_len + 1);
3983
3984 if (!rsp->fcp_u.fcp_status.rsp_len_set ||
3985 (bep->rsp_code == FCP_NO_FAILURE)) {
3986
3987 SF_DEBUG(2, (sf, CE_CONT,
3988 "!INQUIRY to al_pa %x lun %" PRIx64
3989 " succeeded\n",
3990 privp->dest_nport_id, SCSA_LUN(target)));
3991
3992 (void) ddi_dma_sync(privp->data_dma_handle,
3993 (off_t)0, (size_t)0,
3994 DDI_DMA_SYNC_FORKERNEL);
3995
3996 mutex_enter(&sf->sf_mutex);
3997
3998 if (sf->sf_lip_cnt == privp->lip_cnt) {
3999 mutex_enter(&target->sft_mutex);
4000 target->sft_device_type =
4001 prt->inq_dtype;
4002 bcopy(prt, &target->sft_inq,
4003 sizeof (*prt));
4004 mutex_exit(&target->sft_mutex);
4005 sf->sf_device_count--;
4006 ASSERT(sf->sf_device_count >= 0);
4007 if (sf->sf_device_count == 0) {
4008 sf_finish_init(sf,
4009 privp->lip_cnt);
4010 }
4011 }
4012 mutex_exit(&sf->sf_mutex);
4013 sf_els_free(fpkt);
4014 return;
4015 }
4016 } else if ((rsp->fcp_u.fcp_status.scsi_status ==
4017 STATUS_BUSY) ||
4018 (rsp->fcp_u.fcp_status.scsi_status == STATUS_QFULL) ||
4019 (rsp->fcp_u.fcp_status.scsi_status == STATUS_CHECK)) {
4020 delayed_retry = TRUE;
4021 }
4022 } else {
4023 SF_DEBUG(2, (sf, CE_CONT, "!INQUIRY to al_pa %x fc status %x",
4024 privp->dest_nport_id, fpkt->fcal_pkt_status));
4025 }
4026
4027 if (++(privp->retries) < sf_els_retries ||
4028 (delayed_retry && privp->retries < SF_BSY_RETRIES)) {
4029 if (fpkt->fcal_pkt_status == FCAL_STATUS_MAX_XCHG_EXCEEDED) {
4030 tsf = sf->sf_sibling;
4031 if (tsf != NULL) {
4032 mutex_enter(&tsf->sf_cmd_mutex);
4033 tsf->sf_flag = 1;
4034 tsf->sf_throttle = SF_DECR_DELTA;
4035 mutex_exit(&tsf->sf_cmd_mutex);
4036 }
4037 delayed_retry = 1;
4038 }
4039 if (delayed_retry) {
4040 privp->retries--;
4041 privp->timeout = sf_watchdog_time + SF_BSY_TIMEOUT;
4042 privp->delayed_retry = TRUE;
4043 } else {
4044 privp->timeout = sf_watchdog_time + SF_FCP_TIMEOUT;
4045 }
4046
4047 privp->prev = NULL;
4048 mutex_enter(&sf->sf_mutex);
4049 if (privp->lip_cnt == sf->sf_lip_cnt) {
4050 if (!delayed_retry) {
4051 SF_DEBUG(1, (sf, CE_WARN,
4052 "INQUIRY to al_pa %x failed, retrying",
4053 privp->dest_nport_id));
4054 }
4055 privp->next = sf->sf_els_list;
4056 if (sf->sf_els_list != NULL) {
4057 sf->sf_els_list->prev = privp;
4058 }
4059 sf->sf_els_list = privp;
4060 mutex_exit(&sf->sf_mutex);
4061 /* if not delayed call transport to send a pkt */
4062 if (!delayed_retry &&
4063 (soc_transport(sf->sf_sochandle, fpkt,
4064 FCAL_NOSLEEP, CQ_REQUEST_1) !=
4065 FCAL_TRANSPORT_SUCCESS)) {
4066 mutex_enter(&sf->sf_mutex);
4067 if (privp->prev != NULL) {
4068 privp->prev->next = privp->next;
4069 }
4070 if (privp->next != NULL) {
4071 privp->next->prev = privp->prev;
4072 }
4073 if (sf->sf_els_list == privp) {
4074 sf->sf_els_list = privp->next;
4075 }
4076 mutex_exit(&sf->sf_mutex);
4077 goto fail;
4078 }
4079 return;
4080 }
4081 mutex_exit(&sf->sf_mutex);
4082 } else {
4083 fail:
4084 mutex_enter(&sf->sf_mutex);
4085 if (sf->sf_lip_cnt == privp->lip_cnt) {
4086 sf_offline_target(sf, target);
4087 sf_log(sf, CE_NOTE,
4088 "INQUIRY to target 0x%x lun %" PRIx64 " failed. "
4089 "Retry Count: %d\n",
4090 sf_alpa_to_switch[privp->dest_nport_id],
4091 SCSA_LUN(target),
4092 privp->retries);
4093 sf->sf_device_count--;
4094 ASSERT(sf->sf_device_count >= 0);
4095 if (sf->sf_device_count == 0) {
4096 sf_finish_init(sf, privp->lip_cnt);
4097 }
4098 }
4099 mutex_exit(&sf->sf_mutex);
4100 }
4101 sf_els_free(fpkt);
4102 }
4103
4104
4105 static void
sf_finish_init(struct sf * sf,int lip_cnt)4106 sf_finish_init(struct sf *sf, int lip_cnt)
4107 {
4108 int i; /* loop index */
4109 int cflag;
4110 struct sf_target *target; /* current target */
4111 dev_info_t *dip;
4112 struct sf_hp_elem *elem; /* hotplug element created */
4113
4114 SF_DEBUG(1, (sf, CE_WARN, "!sf_finish_init\n"));
4115 ASSERT(mutex_owned(&sf->sf_mutex));
4116
4117 /* scan all hash queues */
4118 for (i = 0; i < SF_NUM_HASH_QUEUES; i++) {
4119 target = sf->sf_wwn_lists[i];
4120 while (target != NULL) {
4121 mutex_enter(&target->sft_mutex);
4122
4123 /* see if target is not offline */
4124 if ((target->sft_state & SF_TARGET_OFFLINE)) {
4125 /*
4126 * target already offline
4127 */
4128 mutex_exit(&target->sft_mutex);
4129 goto next_entry;
4130 }
4131
4132 /*
4133 * target is not already offline -- see if it has
4134 * already been marked as ready to go offline
4135 */
4136 if (target->sft_state & SF_TARGET_MARK) {
4137 /*
4138 * target already marked, so take it offline
4139 */
4140 mutex_exit(&target->sft_mutex);
4141 sf_offline_target(sf, target);
4142 goto next_entry;
4143 }
4144
4145 /* clear target busy flag */
4146 target->sft_state &= ~SF_TARGET_BUSY;
4147
4148 /* is target init not yet done ?? */
4149 cflag = !(target->sft_state & SF_TARGET_INIT_DONE);
4150
4151 /* get pointer to target dip */
4152 dip = target->sft_dip;
4153
4154 mutex_exit(&target->sft_mutex);
4155 mutex_exit(&sf->sf_mutex);
4156
4157 if (cflag && (dip == NULL)) {
4158 /*
4159 * target init not yet done &&
4160 * devinfo not yet created
4161 */
4162 sf_create_devinfo(sf, target, lip_cnt);
4163 mutex_enter(&sf->sf_mutex);
4164 goto next_entry;
4165 }
4166
4167 /*
4168 * target init already done || devinfo already created
4169 */
4170 ASSERT(dip != NULL);
4171 if (!sf_create_props(dip, target, lip_cnt)) {
4172 /* a problem creating properties */
4173 mutex_enter(&sf->sf_mutex);
4174 goto next_entry;
4175 }
4176
4177 /* create a new element for the hotplug list */
4178 if ((elem = kmem_zalloc(sizeof (struct sf_hp_elem),
4179 KM_NOSLEEP)) != NULL) {
4180
4181 /* fill in the new element */
4182 elem->dip = dip;
4183 elem->target = target;
4184 elem->what = SF_ONLINE;
4185
4186 /* add the new element into the hotplug list */
4187 mutex_enter(&sf->sf_hp_daemon_mutex);
4188 if (sf->sf_hp_elem_tail != NULL) {
4189 sf->sf_hp_elem_tail->next = elem;
4190 sf->sf_hp_elem_tail = elem;
4191 } else {
4192 /* this is the first element in list */
4193 sf->sf_hp_elem_head =
4194 sf->sf_hp_elem_tail =
4195 elem;
4196 }
4197 cv_signal(&sf->sf_hp_daemon_cv);
4198 mutex_exit(&sf->sf_hp_daemon_mutex);
4199 } else {
4200 /* could not allocate memory for element ?? */
4201 (void) ndi_devi_online_async(dip, 0);
4202 }
4203
4204 mutex_enter(&sf->sf_mutex);
4205
4206 next_entry:
4207 /* ensure no new LIPs have occurred */
4208 if (sf->sf_lip_cnt != lip_cnt) {
4209 return;
4210 }
4211 target = target->sft_next;
4212 }
4213
4214 /* done scanning all targets in this queue */
4215 }
4216
4217 /* done with all hash queues */
4218
4219 sf->sf_state = SF_STATE_ONLINE;
4220 sf->sf_online_timer = 0;
4221 }
4222
4223
4224 /*
4225 * create devinfo node
4226 */
4227 static void
sf_create_devinfo(struct sf * sf,struct sf_target * target,int lip_cnt)4228 sf_create_devinfo(struct sf *sf, struct sf_target *target, int lip_cnt)
4229 {
4230 dev_info_t *cdip = NULL;
4231 char *nname = NULL;
4232 char **compatible = NULL;
4233 int ncompatible;
4234 struct scsi_inquiry *inq = &target->sft_inq;
4235 char *scsi_binding_set;
4236
4237 /* get the 'scsi-binding-set' property */
4238 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, sf->sf_dip,
4239 DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, "scsi-binding-set",
4240 &scsi_binding_set) != DDI_PROP_SUCCESS)
4241 scsi_binding_set = NULL;
4242
4243 /* determine the node name and compatible */
4244 scsi_hba_nodename_compatible_get(inq, scsi_binding_set,
4245 inq->inq_dtype, NULL, &nname, &compatible, &ncompatible);
4246 if (scsi_binding_set)
4247 ddi_prop_free(scsi_binding_set);
4248
4249 /* if nodename can't be determined then print a message and skip it */
4250 if (nname == NULL) {
4251 #ifndef RAID_LUNS
4252 sf_log(sf, CE_WARN, "%s%d: no driver for device "
4253 "@w%02x%02x%02x%02x%02x%02x%02x%02x,%x\n"
4254 " compatible: %s",
4255 ddi_driver_name(sf->sf_dip), ddi_get_instance(sf->sf_dip),
4256 target->sft_port_wwn[0], target->sft_port_wwn[1],
4257 target->sft_port_wwn[2], target->sft_port_wwn[3],
4258 target->sft_port_wwn[4], target->sft_port_wwn[5],
4259 target->sft_port_wwn[6], target->sft_port_wwn[7],
4260 target->sft_lun.l, *compatible);
4261 #else
4262 sf_log(sf, CE_WARN, "%s%d: no driver for device "
4263 "@w%02x%02x%02x%02x%02x%02x%02x%02x,%x\n"
4264 " compatible: %s",
4265 ddi_driver_name(sf->sf_dip), ddi_get_instance(sf->sf_dip),
4266 target->sft_port_wwn[0], target->sft_port_wwn[1],
4267 target->sft_port_wwn[2], target->sft_port_wwn[3],
4268 target->sft_port_wwn[4], target->sft_port_wwn[5],
4269 target->sft_port_wwn[6], target->sft_port_wwn[7],
4270 target->sft_raid_lun, *compatible);
4271 #endif
4272 goto fail;
4273 }
4274
4275 /* allocate the node */
4276 if (ndi_devi_alloc(sf->sf_dip, nname,
4277 DEVI_SID_NODEID, &cdip) != NDI_SUCCESS) {
4278 goto fail;
4279 }
4280
4281 /* decorate the node with compatible */
4282 if (ndi_prop_update_string_array(DDI_DEV_T_NONE, cdip,
4283 "compatible", compatible, ncompatible) != DDI_PROP_SUCCESS) {
4284 goto fail;
4285 }
4286
4287 /* add addressing properties to the node */
4288 if (sf_create_props(cdip, target, lip_cnt) != 1) {
4289 goto fail;
4290 }
4291
4292 mutex_enter(&target->sft_mutex);
4293 if (target->sft_dip != NULL) {
4294 mutex_exit(&target->sft_mutex);
4295 goto fail;
4296 }
4297 target->sft_dip = cdip;
4298 mutex_exit(&target->sft_mutex);
4299
4300 if (ndi_devi_online_async(cdip, 0) != DDI_SUCCESS) {
4301 goto fail;
4302 }
4303
4304 scsi_hba_nodename_compatible_free(nname, compatible);
4305 return;
4306
4307 fail:
4308 scsi_hba_nodename_compatible_free(nname, compatible);
4309 if (cdip != NULL) {
4310 (void) ndi_prop_remove(DDI_DEV_T_NONE, cdip, NODE_WWN_PROP);
4311 (void) ndi_prop_remove(DDI_DEV_T_NONE, cdip, PORT_WWN_PROP);
4312 (void) ndi_prop_remove(DDI_DEV_T_NONE, cdip, LIP_CNT_PROP);
4313 (void) ndi_prop_remove(DDI_DEV_T_NONE, cdip, TARGET_PROP);
4314 (void) ndi_prop_remove(DDI_DEV_T_NONE, cdip, LUN_PROP);
4315 if (ndi_devi_free(cdip) != NDI_SUCCESS) {
4316 sf_log(sf, CE_WARN, "ndi_devi_free failed\n");
4317 } else {
4318 mutex_enter(&target->sft_mutex);
4319 if (cdip == target->sft_dip) {
4320 target->sft_dip = NULL;
4321 }
4322 mutex_exit(&target->sft_mutex);
4323 }
4324 }
4325 }
4326
4327 /*
4328 * create required properties, returning TRUE iff we succeed, else
4329 * returning FALSE
4330 */
4331 static int
sf_create_props(dev_info_t * cdip,struct sf_target * target,int lip_cnt)4332 sf_create_props(dev_info_t *cdip, struct sf_target *target, int lip_cnt)
4333 {
4334 int tgt_id = sf_alpa_to_switch[target->sft_al_pa];
4335
4336
4337 if (ndi_prop_update_byte_array(DDI_DEV_T_NONE,
4338 cdip, NODE_WWN_PROP, target->sft_node_wwn, FC_WWN_SIZE) !=
4339 DDI_PROP_SUCCESS) {
4340 return (FALSE);
4341 }
4342
4343 if (ndi_prop_update_byte_array(DDI_DEV_T_NONE,
4344 cdip, PORT_WWN_PROP, target->sft_port_wwn, FC_WWN_SIZE) !=
4345 DDI_PROP_SUCCESS) {
4346 return (FALSE);
4347 }
4348
4349 if (ndi_prop_update_int(DDI_DEV_T_NONE,
4350 cdip, LIP_CNT_PROP, lip_cnt) != DDI_PROP_SUCCESS) {
4351 return (FALSE);
4352 }
4353
4354 if (ndi_prop_update_int(DDI_DEV_T_NONE,
4355 cdip, TARGET_PROP, tgt_id) != DDI_PROP_SUCCESS) {
4356 return (FALSE);
4357 }
4358
4359 #ifndef RAID_LUNS
4360 if (ndi_prop_update_int(DDI_DEV_T_NONE,
4361 cdip, LUN_PROP, target->sft_lun.l) != DDI_PROP_SUCCESS) {
4362 return (0);
4363 }
4364 #else
4365 if (ndi_prop_update_int(DDI_DEV_T_NONE,
4366 cdip, LUN_PROP, target->sft_raid_lun) != DDI_PROP_SUCCESS) {
4367 return (0);
4368 }
4369 #endif
4370
4371 return (TRUE);
4372 }
4373
4374
4375 /*
4376 * called by the transport to offline a target
4377 */
4378 /* ARGSUSED */
4379 static void
sf_offline_target(struct sf * sf,struct sf_target * target)4380 sf_offline_target(struct sf *sf, struct sf_target *target)
4381 {
4382 dev_info_t *dip;
4383 struct sf_target *next_target = NULL;
4384 struct sf_hp_elem *elem;
4385
4386 ASSERT(mutex_owned(&sf->sf_mutex));
4387
4388 if (sf_core && (sf_core & SF_CORE_OFFLINE_TARGET)) {
4389 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
4390 sf_core = 0;
4391 }
4392
4393 while (target != NULL) {
4394 sf_log(sf, CE_NOTE,
4395 "!target 0x%x al_pa 0x%x lun %" PRIx64 " offlined\n",
4396 sf_alpa_to_switch[target->sft_al_pa],
4397 target->sft_al_pa, SCSA_LUN(target));
4398 mutex_enter(&target->sft_mutex);
4399 target->sft_state &= ~(SF_TARGET_BUSY|SF_TARGET_MARK);
4400 target->sft_state |= SF_TARGET_OFFLINE;
4401 mutex_exit(&target->sft_mutex);
4402 mutex_exit(&sf->sf_mutex);
4403
4404 /* XXXX if this is LUN 0, offline all other LUNs */
4405 if (next_target || target->sft_lun.l == 0)
4406 next_target = target->sft_next_lun;
4407
4408 /* abort all cmds for this target */
4409 sf_abort_all(sf, target, FALSE, sf->sf_lip_cnt, FALSE);
4410
4411 mutex_enter(&sf->sf_mutex);
4412 mutex_enter(&target->sft_mutex);
4413 if (target->sft_state & SF_TARGET_INIT_DONE) {
4414 dip = target->sft_dip;
4415 mutex_exit(&target->sft_mutex);
4416 mutex_exit(&sf->sf_mutex);
4417 (void) ndi_prop_remove(DDI_DEV_T_NONE, dip,
4418 TARGET_PROP);
4419 (void) ndi_event_retrieve_cookie(sf->sf_event_hdl,
4420 dip, FCAL_REMOVE_EVENT, &sf_remove_eid,
4421 NDI_EVENT_NOPASS);
4422 (void) ndi_event_run_callbacks(sf->sf_event_hdl,
4423 target->sft_dip, sf_remove_eid, NULL);
4424
4425 elem = kmem_zalloc(sizeof (struct sf_hp_elem),
4426 KM_NOSLEEP);
4427 if (elem != NULL) {
4428 elem->dip = dip;
4429 elem->target = target;
4430 elem->what = SF_OFFLINE;
4431 mutex_enter(&sf->sf_hp_daemon_mutex);
4432 if (sf->sf_hp_elem_tail != NULL) {
4433 sf->sf_hp_elem_tail->next = elem;
4434 sf->sf_hp_elem_tail = elem;
4435 } else {
4436 sf->sf_hp_elem_head =
4437 sf->sf_hp_elem_tail =
4438 elem;
4439 }
4440 cv_signal(&sf->sf_hp_daemon_cv);
4441 mutex_exit(&sf->sf_hp_daemon_mutex);
4442 } else {
4443 /* don't do NDI_DEVI_REMOVE for now */
4444 if (ndi_devi_offline(dip, 0) != NDI_SUCCESS) {
4445 SF_DEBUG(1, (sf, CE_WARN,
4446 "target %x lun %" PRIx64 ", "
4447 "device offline failed",
4448 sf_alpa_to_switch[target->
4449 sft_al_pa],
4450 SCSA_LUN(target)));
4451 } else {
4452 SF_DEBUG(1, (sf, CE_NOTE,
4453 "target %x, lun %" PRIx64 ", "
4454 "device offline succeeded\n",
4455 sf_alpa_to_switch[target->
4456 sft_al_pa],
4457 SCSA_LUN(target)));
4458 }
4459 }
4460 mutex_enter(&sf->sf_mutex);
4461 } else {
4462 mutex_exit(&target->sft_mutex);
4463 }
4464 target = next_target;
4465 }
4466 }
4467
4468
4469 /*
4470 * routine to get/set a capability
4471 *
4472 * returning:
4473 * 1 (TRUE) boolean capability is true (on get)
4474 * 0 (FALSE) invalid capability, can't set capability (on set),
4475 * or boolean capability is false (on get)
4476 * -1 (UNDEFINED) can't find capability (SCSA) or unsupported capability
4477 * 3 when getting SCSI version number
4478 * AL_PA when getting port initiator ID
4479 */
4480 static int
sf_commoncap(struct scsi_address * ap,char * cap,int val,int tgtonly,int doset)4481 sf_commoncap(struct scsi_address *ap, char *cap,
4482 int val, int tgtonly, int doset)
4483 {
4484 struct sf *sf = ADDR2SF(ap);
4485 int cidx;
4486 int rval = FALSE;
4487
4488
4489 if (cap == NULL) {
4490 SF_DEBUG(3, (sf, CE_WARN, "sf_commoncap: invalid arg"));
4491 return (rval);
4492 }
4493
4494 /* get index of capability string */
4495 if ((cidx = scsi_hba_lookup_capstr(cap)) == -1) {
4496 /* can't find capability */
4497 return (UNDEFINED);
4498 }
4499
4500 if (doset) {
4501 /*
4502 * Process setcap request.
4503 */
4504
4505 /*
4506 * At present, we can only set binary (0/1) values
4507 */
4508 switch (cidx) {
4509 case SCSI_CAP_ARQ: /* can't set this capability */
4510 break;
4511 default:
4512 SF_DEBUG(3, (sf, CE_WARN,
4513 "sf_setcap: unsupported %d", cidx));
4514 rval = UNDEFINED;
4515 break;
4516 }
4517
4518 SF_DEBUG(4, (sf, CE_NOTE,
4519 "set cap: cap=%s,val=0x%x,tgtonly=0x%x"
4520 ",doset=0x%x,rval=%d\n",
4521 cap, val, tgtonly, doset, rval));
4522
4523 } else {
4524 /*
4525 * Process getcap request.
4526 */
4527 switch (cidx) {
4528 case SCSI_CAP_DMA_MAX:
4529 break; /* don't' have this capability */
4530 case SCSI_CAP_INITIATOR_ID:
4531 rval = sf->sf_al_pa;
4532 break;
4533 case SCSI_CAP_ARQ:
4534 rval = TRUE; /* do have this capability */
4535 break;
4536 case SCSI_CAP_RESET_NOTIFICATION:
4537 case SCSI_CAP_TAGGED_QING:
4538 rval = TRUE; /* do have this capability */
4539 break;
4540 case SCSI_CAP_SCSI_VERSION:
4541 rval = 3;
4542 break;
4543 case SCSI_CAP_INTERCONNECT_TYPE:
4544 rval = INTERCONNECT_FIBRE;
4545 break;
4546 default:
4547 SF_DEBUG(4, (sf, CE_WARN,
4548 "sf_scsi_getcap: unsupported"));
4549 rval = UNDEFINED;
4550 break;
4551 }
4552 SF_DEBUG(4, (sf, CE_NOTE,
4553 "get cap: cap=%s,val=0x%x,tgtonly=0x%x,"
4554 "doset=0x%x,rval=%d\n",
4555 cap, val, tgtonly, doset, rval));
4556 }
4557
4558 return (rval);
4559 }
4560
4561
4562 /*
4563 * called by the transport to get a capability
4564 */
4565 static int
sf_getcap(struct scsi_address * ap,char * cap,int whom)4566 sf_getcap(struct scsi_address *ap, char *cap, int whom)
4567 {
4568 return (sf_commoncap(ap, cap, 0, whom, FALSE));
4569 }
4570
4571
4572 /*
4573 * called by the transport to set a capability
4574 */
4575 static int
sf_setcap(struct scsi_address * ap,char * cap,int value,int whom)4576 sf_setcap(struct scsi_address *ap, char *cap, int value, int whom)
4577 {
4578 return (sf_commoncap(ap, cap, value, whom, TRUE));
4579 }
4580
4581
4582 /*
4583 * called by the transport to abort a target
4584 */
4585 static int
sf_abort(struct scsi_address * ap,struct scsi_pkt * pkt)4586 sf_abort(struct scsi_address *ap, struct scsi_pkt *pkt)
4587 {
4588 struct sf *sf = ADDR2SF(ap);
4589 struct sf_target *target = ADDR2TARGET(ap);
4590 struct sf_pkt *cmd, *ncmd, *pcmd;
4591 struct fcal_packet *fpkt;
4592 int rval = 0, t, my_rval = FALSE;
4593 int old_target_state;
4594 int lip_cnt;
4595 int tgt_id;
4596 fc_frame_header_t *hp;
4597 int deferred_destroy;
4598
4599 deferred_destroy = 0;
4600
4601 if (pkt != NULL) {
4602 cmd = PKT2CMD(pkt);
4603 fpkt = cmd->cmd_fp_pkt;
4604 SF_DEBUG(2, (sf, CE_NOTE, "sf_abort packet %p\n",
4605 (void *)fpkt));
4606 pcmd = NULL;
4607 mutex_enter(&sf->sf_cmd_mutex);
4608 ncmd = sf->sf_pkt_head;
4609 while (ncmd != NULL) {
4610 if (ncmd == cmd) {
4611 if (pcmd != NULL) {
4612 pcmd->cmd_next = cmd->cmd_next;
4613 } else {
4614 sf->sf_pkt_head = cmd->cmd_next;
4615 }
4616 cmd->cmd_flags &= ~CFLAG_IN_QUEUE;
4617 cmd->cmd_state = SF_STATE_IDLE;
4618 pkt->pkt_reason = CMD_ABORTED;
4619 pkt->pkt_statistics |= STAT_ABORTED;
4620 my_rval = TRUE;
4621 break;
4622 } else {
4623 pcmd = ncmd;
4624 ncmd = ncmd->cmd_next;
4625 }
4626 }
4627 mutex_exit(&sf->sf_cmd_mutex);
4628 if (ncmd == NULL) {
4629 mutex_enter(&cmd->cmd_abort_mutex);
4630 if (cmd->cmd_state == SF_STATE_ISSUED) {
4631 cmd->cmd_state = SF_STATE_ABORTING;
4632 cmd->cmd_timeout = sf_watchdog_time + 20;
4633 mutex_exit(&cmd->cmd_abort_mutex);
4634 /* call transport to abort command */
4635 if (((rval = soc_abort(sf->sf_sochandle,
4636 sf->sf_socp, sf->sf_sochandle->fcal_portno,
4637 fpkt, 1)) == FCAL_ABORTED) ||
4638 (rval == FCAL_ABORT_FAILED)) {
4639 my_rval = TRUE;
4640 pkt->pkt_reason = CMD_ABORTED;
4641 pkt->pkt_statistics |= STAT_ABORTED;
4642 cmd->cmd_state = SF_STATE_IDLE;
4643 } else if (rval == FCAL_BAD_ABORT) {
4644 cmd->cmd_timeout = sf_watchdog_time
4645 + 20;
4646 my_rval = FALSE;
4647 } else {
4648 SF_DEBUG(1, (sf, CE_NOTE,
4649 "Command Abort failed\n"));
4650 }
4651 } else {
4652 mutex_exit(&cmd->cmd_abort_mutex);
4653 }
4654 }
4655 } else {
4656 SF_DEBUG(2, (sf, CE_NOTE, "sf_abort target\n"));
4657 mutex_enter(&sf->sf_mutex);
4658 lip_cnt = sf->sf_lip_cnt;
4659 mutex_enter(&target->sft_mutex);
4660 if (target->sft_state & (SF_TARGET_BUSY |
4661 SF_TARGET_OFFLINE)) {
4662 mutex_exit(&target->sft_mutex);
4663 return (rval);
4664 }
4665 old_target_state = target->sft_state;
4666 target->sft_state |= SF_TARGET_BUSY;
4667 mutex_exit(&target->sft_mutex);
4668 mutex_exit(&sf->sf_mutex);
4669
4670 if ((pkt = sf_scsi_init_pkt(ap, NULL, NULL, 0,
4671 0, 0, 0, NULL, 0)) != NULL) {
4672
4673 cmd = PKT2CMD(pkt);
4674 cmd->cmd_block->fcp_cntl.cntl_abort_tsk = 1;
4675 cmd->cmd_fp_pkt->fcal_pkt_comp = NULL;
4676 cmd->cmd_pkt->pkt_flags |= FLAG_NOINTR;
4677
4678 /* prepare the packet for transport */
4679 if (sf_prepare_pkt(sf, cmd, target) == TRAN_ACCEPT) {
4680
4681 cmd->cmd_state = SF_STATE_ISSUED;
4682 /*
4683 * call transport to send a pkt polled
4684 *
4685 * if that fails call the transport to abort it
4686 */
4687 if (soc_transport_poll(sf->sf_sochandle,
4688 cmd->cmd_fp_pkt, SF_ABORT_TIMEOUT,
4689 CQ_REQUEST_1) == FCAL_TRANSPORT_SUCCESS) {
4690 (void) ddi_dma_sync(
4691 cmd->cmd_cr_pool->rsp_dma_handle,
4692 (off_t)
4693 ((caddr_t)cmd->cmd_rsp_block -
4694 cmd->cmd_cr_pool->rsp_base),
4695 FCP_MAX_RSP_IU_SIZE,
4696 DDI_DMA_SYNC_FORKERNEL);
4697 if (((struct fcp_rsp_info *)
4698 (&cmd->cmd_rsp_block->
4699 fcp_response_len + 1))->
4700 rsp_code == FCP_NO_FAILURE) {
4701 /* abort cmds for this targ */
4702 sf_abort_all(sf, target, TRUE,
4703 lip_cnt, TRUE);
4704 } else {
4705 hp = &cmd->cmd_fp_pkt->
4706 fcal_socal_request.
4707 sr_fc_frame_hdr;
4708 tgt_id = sf_alpa_to_switch[
4709 (uchar_t)hp->d_id];
4710 sf->sf_stats.tstats[tgt_id].
4711 task_mgmt_failures++;
4712 SF_DEBUG(1, (sf, CE_NOTE,
4713 "Target %d Abort Task "
4714 "Set failed\n", hp->d_id));
4715 }
4716 } else {
4717 mutex_enter(&cmd->cmd_abort_mutex);
4718 if (cmd->cmd_state == SF_STATE_ISSUED) {
4719 cmd->cmd_state = SF_STATE_ABORTING;
4720 cmd->cmd_timeout = sf_watchdog_time
4721 + 20;
4722 mutex_exit(&cmd->cmd_abort_mutex);
4723 if ((t = soc_abort(sf->sf_sochandle,
4724 sf->sf_socp, sf->sf_sochandle->
4725 fcal_portno, cmd->cmd_fp_pkt, 1)) !=
4726 FCAL_ABORTED &&
4727 (t != FCAL_ABORT_FAILED)) {
4728 sf_log(sf, CE_NOTE,
4729 "sf_abort failed, "
4730 "initiating LIP\n");
4731 sf_force_lip(sf);
4732 deferred_destroy = 1;
4733 }
4734 } else {
4735 mutex_exit(&cmd->cmd_abort_mutex);
4736 }
4737 }
4738 }
4739 if (!deferred_destroy) {
4740 cmd->cmd_fp_pkt->fcal_pkt_comp =
4741 sf_cmd_callback;
4742 cmd->cmd_block->fcp_cntl.cntl_abort_tsk = 0;
4743 sf_scsi_destroy_pkt(ap, pkt);
4744 my_rval = TRUE;
4745 }
4746 }
4747 mutex_enter(&sf->sf_mutex);
4748 if (lip_cnt == sf->sf_lip_cnt) {
4749 mutex_enter(&target->sft_mutex);
4750 target->sft_state = old_target_state;
4751 mutex_exit(&target->sft_mutex);
4752 }
4753 mutex_exit(&sf->sf_mutex);
4754 }
4755 return (my_rval);
4756 }
4757
4758
4759 /*
4760 * called by the transport and internally to reset a target
4761 */
4762 static int
sf_reset(struct scsi_address * ap,int level)4763 sf_reset(struct scsi_address *ap, int level)
4764 {
4765 struct scsi_pkt *pkt;
4766 struct fcal_packet *fpkt;
4767 struct sf *sf = ADDR2SF(ap);
4768 struct sf_target *target = ADDR2TARGET(ap), *ntarget;
4769 struct sf_pkt *cmd;
4770 int rval = FALSE, t;
4771 int lip_cnt;
4772 int tgt_id, ret;
4773 fc_frame_header_t *hp;
4774 int deferred_destroy;
4775
4776 /* We don't support RESET_LUN yet. */
4777 if (level == RESET_TARGET) {
4778 struct sf_reset_list *p;
4779
4780 if ((p = kmem_alloc(sizeof (struct sf_reset_list), KM_NOSLEEP))
4781 == NULL)
4782 return (rval);
4783
4784 SF_DEBUG(2, (sf, CE_NOTE, "sf_reset target\n"));
4785 mutex_enter(&sf->sf_mutex);
4786 /* All target resets go to LUN 0 */
4787 if (target->sft_lun.l) {
4788 target = sf_lookup_target(sf, target->sft_port_wwn, 0);
4789 }
4790 mutex_enter(&target->sft_mutex);
4791 if (target->sft_state & (SF_TARGET_BUSY |
4792 SF_TARGET_OFFLINE)) {
4793 mutex_exit(&target->sft_mutex);
4794 mutex_exit(&sf->sf_mutex);
4795 kmem_free(p, sizeof (struct sf_reset_list));
4796 return (rval);
4797 }
4798 lip_cnt = sf->sf_lip_cnt;
4799 target->sft_state |= SF_TARGET_BUSY;
4800 for (ntarget = target->sft_next_lun;
4801 ntarget;
4802 ntarget = ntarget->sft_next_lun) {
4803 mutex_enter(&ntarget->sft_mutex);
4804 /*
4805 * XXXX If we supported RESET_LUN we should check here
4806 * to see if any LUN were being reset and somehow fail
4807 * that operation.
4808 */
4809 ntarget->sft_state |= SF_TARGET_BUSY;
4810 mutex_exit(&ntarget->sft_mutex);
4811 }
4812 mutex_exit(&target->sft_mutex);
4813 mutex_exit(&sf->sf_mutex);
4814
4815 deferred_destroy = 0;
4816 if ((pkt = sf_scsi_init_pkt(ap, NULL, NULL, 0,
4817 0, 0, 0, NULL, 0)) != NULL) {
4818 cmd = PKT2CMD(pkt);
4819 cmd->cmd_block->fcp_cntl.cntl_reset = 1;
4820 cmd->cmd_fp_pkt->fcal_pkt_comp = NULL;
4821 cmd->cmd_pkt->pkt_flags |= FLAG_NOINTR;
4822
4823 /* prepare the packet for transport */
4824 if (sf_prepare_pkt(sf, cmd, target) == TRAN_ACCEPT) {
4825 /* call transport to send a pkt polled */
4826 cmd->cmd_state = SF_STATE_ISSUED;
4827 if ((ret = soc_transport_poll(sf->sf_sochandle,
4828 cmd->cmd_fp_pkt, SF_ABORT_TIMEOUT,
4829 CQ_REQUEST_1)) == FCAL_TRANSPORT_SUCCESS) {
4830 (void) ddi_dma_sync(cmd->cmd_cr_pool->
4831 rsp_dma_handle, (caddr_t)cmd->
4832 cmd_rsp_block - cmd->cmd_cr_pool->
4833 rsp_base, FCP_MAX_RSP_IU_SIZE,
4834 DDI_DMA_SYNC_FORKERNEL);
4835 fpkt = cmd->cmd_fp_pkt;
4836 if ((fpkt->fcal_pkt_status ==
4837 FCAL_STATUS_OK) &&
4838 (((struct fcp_rsp_info *)
4839 (&cmd->cmd_rsp_block->
4840 fcp_response_len + 1))->
4841 rsp_code == FCP_NO_FAILURE)) {
4842 sf_log(sf, CE_NOTE,
4843 "!sf%d: Target 0x%x Reset "
4844 "successful\n",
4845 ddi_get_instance(\
4846 sf->sf_dip),
4847 sf_alpa_to_switch[
4848 target->sft_al_pa]);
4849 rval = TRUE;
4850 } else {
4851 hp = &cmd->cmd_fp_pkt->
4852 fcal_socal_request.
4853 sr_fc_frame_hdr;
4854 tgt_id = sf_alpa_to_switch[
4855 (uchar_t)hp->d_id];
4856 sf->sf_stats.tstats[tgt_id].
4857 task_mgmt_failures++;
4858 sf_log(sf, CE_NOTE,
4859 "!sf%d: Target 0x%x "
4860 "Reset failed."
4861 "Status code 0x%x "
4862 "Resp code 0x%x\n",
4863 ddi_get_instance(\
4864 sf->sf_dip),
4865 tgt_id,
4866 fpkt->fcal_pkt_status,
4867 ((struct fcp_rsp_info *)
4868 (&cmd->cmd_rsp_block->
4869 fcp_response_len + 1))->
4870 rsp_code);
4871 }
4872 } else {
4873 sf_log(sf, CE_NOTE, "!sf%d: Target "
4874 "0x%x Reset Failed. Ret=%x\n",
4875 ddi_get_instance(sf->sf_dip),
4876 sf_alpa_to_switch[
4877 target->sft_al_pa], ret);
4878 mutex_enter(&cmd->cmd_abort_mutex);
4879 if (cmd->cmd_state == SF_STATE_ISSUED) {
4880 /* call the transport to abort a cmd */
4881 cmd->cmd_timeout = sf_watchdog_time
4882 + 20;
4883 cmd->cmd_state = SF_STATE_ABORTING;
4884 mutex_exit(&cmd->cmd_abort_mutex);
4885 if (((t = soc_abort(sf->sf_sochandle,
4886 sf->sf_socp,
4887 sf->sf_sochandle->fcal_portno,
4888 cmd->cmd_fp_pkt, 1)) !=
4889 FCAL_ABORTED) &&
4890 (t != FCAL_ABORT_FAILED)) {
4891 sf_log(sf, CE_NOTE,
4892 "!sf%d: Target 0x%x Reset "
4893 "failed. Abort Failed, "
4894 "forcing LIP\n",
4895 ddi_get_instance(
4896 sf->sf_dip),
4897 sf_alpa_to_switch[
4898 target->sft_al_pa]);
4899 sf_force_lip(sf);
4900 rval = TRUE;
4901 deferred_destroy = 1;
4902 }
4903 } else {
4904 mutex_exit
4905 (&cmd->cmd_abort_mutex);
4906 }
4907 }
4908 }
4909 /*
4910 * Defer releasing the packet if we abort returned with
4911 * a BAD_ABORT or timed out, because there is a
4912 * possibility that the ucode might return it.
4913 * We wait for at least 20s and let it be released
4914 * by the sf_watch thread
4915 */
4916 if (!deferred_destroy) {
4917 cmd->cmd_block->fcp_cntl.cntl_reset = 0;
4918 cmd->cmd_fp_pkt->fcal_pkt_comp =
4919 sf_cmd_callback;
4920 cmd->cmd_state = SF_STATE_IDLE;
4921 /* for cache */
4922 sf_scsi_destroy_pkt(ap, pkt);
4923 }
4924 } else {
4925 cmn_err(CE_WARN, "!sf%d: Target 0x%x Reset Failed. "
4926 "Resource allocation error.\n",
4927 ddi_get_instance(sf->sf_dip),
4928 sf_alpa_to_switch[target->sft_al_pa]);
4929 }
4930 mutex_enter(&sf->sf_mutex);
4931 if ((rval == TRUE) && (lip_cnt == sf->sf_lip_cnt)) {
4932 p->target = target;
4933 p->lip_cnt = lip_cnt;
4934 p->timeout = ddi_get_lbolt() +
4935 drv_usectohz(SF_TARGET_RESET_DELAY);
4936 p->next = sf->sf_reset_list;
4937 sf->sf_reset_list = p;
4938 mutex_exit(&sf->sf_mutex);
4939 mutex_enter(&sf_global_mutex);
4940 if (sf_reset_timeout_id == 0) {
4941 sf_reset_timeout_id = timeout(
4942 sf_check_reset_delay, NULL,
4943 drv_usectohz(SF_TARGET_RESET_DELAY));
4944 }
4945 mutex_exit(&sf_global_mutex);
4946 } else {
4947 if (lip_cnt == sf->sf_lip_cnt) {
4948 mutex_enter(&target->sft_mutex);
4949 target->sft_state &= ~SF_TARGET_BUSY;
4950 for (ntarget = target->sft_next_lun;
4951 ntarget;
4952 ntarget = ntarget->sft_next_lun) {
4953 mutex_enter(&ntarget->sft_mutex);
4954 ntarget->sft_state &= ~SF_TARGET_BUSY;
4955 mutex_exit(&ntarget->sft_mutex);
4956 }
4957 mutex_exit(&target->sft_mutex);
4958 }
4959 mutex_exit(&sf->sf_mutex);
4960 kmem_free(p, sizeof (struct sf_reset_list));
4961 }
4962 } else {
4963 mutex_enter(&sf->sf_mutex);
4964 if ((sf->sf_state == SF_STATE_OFFLINE) &&
4965 (sf_watchdog_time < sf->sf_timer)) {
4966 /*
4967 * We are currently in a lip, so let this one
4968 * finish before forcing another one.
4969 */
4970 mutex_exit(&sf->sf_mutex);
4971 return (TRUE);
4972 }
4973 mutex_exit(&sf->sf_mutex);
4974 sf_log(sf, CE_NOTE, "!sf:Target driver initiated lip\n");
4975 sf_force_lip(sf);
4976 rval = TRUE;
4977 }
4978 return (rval);
4979 }
4980
4981
4982 /*
4983 * abort all commands for a target
4984 *
4985 * if try_abort is set then send an abort
4986 * if abort is set then this is abort, else this is a reset
4987 */
4988 static void
sf_abort_all(struct sf * sf,struct sf_target * target,int abort,int lip_cnt,int try_abort)4989 sf_abort_all(struct sf *sf, struct sf_target *target, int abort, int
4990 lip_cnt, int try_abort)
4991 {
4992 struct sf_target *ntarget;
4993 struct sf_pkt *cmd, *head = NULL, *tail = NULL, *pcmd = NULL, *tcmd;
4994 struct fcal_packet *fpkt;
4995 struct scsi_pkt *pkt;
4996 int rval = FCAL_ABORTED;
4997
4998 /*
4999 * First pull all commands for all LUNs on this target out of the
5000 * overflow list. We can tell it's the same target by comparing
5001 * the node WWN.
5002 */
5003 mutex_enter(&sf->sf_mutex);
5004 if (lip_cnt == sf->sf_lip_cnt) {
5005 mutex_enter(&sf->sf_cmd_mutex);
5006 cmd = sf->sf_pkt_head;
5007 while (cmd != NULL) {
5008 ntarget = ADDR2TARGET(&cmd->cmd_pkt->
5009 pkt_address);
5010 if (ntarget == target) {
5011 if (pcmd != NULL)
5012 pcmd->cmd_next = cmd->cmd_next;
5013 else
5014 sf->sf_pkt_head = cmd->cmd_next;
5015 if (sf->sf_pkt_tail == cmd) {
5016 sf->sf_pkt_tail = pcmd;
5017 if (pcmd != NULL)
5018 pcmd->cmd_next = NULL;
5019 }
5020 tcmd = cmd->cmd_next;
5021 if (head == NULL) {
5022 head = cmd;
5023 tail = cmd;
5024 } else {
5025 tail->cmd_next = cmd;
5026 tail = cmd;
5027 }
5028 cmd->cmd_next = NULL;
5029 cmd = tcmd;
5030 } else {
5031 pcmd = cmd;
5032 cmd = cmd->cmd_next;
5033 }
5034 }
5035 mutex_exit(&sf->sf_cmd_mutex);
5036 }
5037 mutex_exit(&sf->sf_mutex);
5038
5039 /*
5040 * Now complete all the commands on our list. In the process,
5041 * the completion routine may take the commands off the target
5042 * lists.
5043 */
5044 cmd = head;
5045 while (cmd != NULL) {
5046 pkt = cmd->cmd_pkt;
5047 if (abort) {
5048 pkt->pkt_reason = CMD_ABORTED;
5049 pkt->pkt_statistics |= STAT_ABORTED;
5050 } else {
5051 pkt->pkt_reason = CMD_RESET;
5052 pkt->pkt_statistics |= STAT_DEV_RESET;
5053 }
5054 cmd->cmd_flags &= ~CFLAG_IN_QUEUE;
5055 cmd->cmd_state = SF_STATE_IDLE;
5056 cmd = cmd->cmd_next;
5057 /*
5058 * call the packet completion routine only for
5059 * non-polled commands. Ignore the polled commands as
5060 * they timeout and will be handled differently
5061 */
5062 if ((pkt->pkt_comp) && !(pkt->pkt_flags & FLAG_NOINTR))
5063 (*pkt->pkt_comp)(pkt);
5064
5065 }
5066
5067 /*
5068 * Finally get all outstanding commands for each LUN, and abort them if
5069 * they've been issued, and call the completion routine.
5070 * For the case where sf_offline_target is called from sf_watch
5071 * due to a Offline Timeout, it is quite possible that the soc+
5072 * ucode is hosed and therefore cannot return the commands.
5073 * Clear up all the issued commands as well.
5074 * Try_abort will be false only if sf_abort_all is coming from
5075 * sf_target_offline.
5076 */
5077
5078 if (try_abort || sf->sf_state == SF_STATE_OFFLINE) {
5079 mutex_enter(&target->sft_pkt_mutex);
5080 cmd = tcmd = target->sft_pkt_head;
5081 while (cmd != (struct sf_pkt *)&target->sft_pkt_head) {
5082 fpkt = cmd->cmd_fp_pkt;
5083 pkt = cmd->cmd_pkt;
5084 mutex_enter(&cmd->cmd_abort_mutex);
5085 if ((cmd->cmd_state == SF_STATE_ISSUED) &&
5086 (fpkt->fcal_cmd_state &
5087 FCAL_CMD_IN_TRANSPORT) &&
5088 ((fpkt->fcal_cmd_state & FCAL_CMD_COMPLETE) ==
5089 0) && !(pkt->pkt_flags & FLAG_NOINTR)) {
5090 cmd->cmd_state = SF_STATE_ABORTING;
5091 cmd->cmd_timeout = sf_watchdog_time +
5092 cmd->cmd_pkt->pkt_time + 20;
5093 mutex_exit(&cmd->cmd_abort_mutex);
5094 mutex_exit(&target->sft_pkt_mutex);
5095 if (try_abort) {
5096 /* call the transport to abort a pkt */
5097 rval = soc_abort(sf->sf_sochandle,
5098 sf->sf_socp,
5099 sf->sf_sochandle->fcal_portno,
5100 fpkt, 1);
5101 }
5102 if ((rval == FCAL_ABORTED) ||
5103 (rval == FCAL_ABORT_FAILED)) {
5104 if (abort) {
5105 pkt->pkt_reason = CMD_ABORTED;
5106 pkt->pkt_statistics |=
5107 STAT_ABORTED;
5108 } else {
5109 pkt->pkt_reason = CMD_RESET;
5110 pkt->pkt_statistics |=
5111 STAT_DEV_RESET;
5112 }
5113 cmd->cmd_state = SF_STATE_IDLE;
5114 if (pkt->pkt_comp)
5115 (*pkt->pkt_comp)(pkt);
5116 }
5117 mutex_enter(&sf->sf_mutex);
5118 if (lip_cnt != sf->sf_lip_cnt) {
5119 mutex_exit(&sf->sf_mutex);
5120 return;
5121 }
5122 mutex_exit(&sf->sf_mutex);
5123 mutex_enter(&target->sft_pkt_mutex);
5124 cmd = target->sft_pkt_head;
5125 } else {
5126 mutex_exit(&cmd->cmd_abort_mutex);
5127 cmd = cmd->cmd_forw;
5128 }
5129 }
5130 mutex_exit(&target->sft_pkt_mutex);
5131 }
5132 }
5133
5134
5135 /*
5136 * called by the transport to start a packet
5137 */
5138 static int
sf_start(struct scsi_address * ap,struct scsi_pkt * pkt)5139 sf_start(struct scsi_address *ap, struct scsi_pkt *pkt)
5140 {
5141 struct sf *sf = ADDR2SF(ap);
5142 struct sf_target *target = ADDR2TARGET(ap);
5143 struct sf_pkt *cmd = PKT2CMD(pkt);
5144 int rval;
5145
5146
5147 SF_DEBUG(6, (sf, CE_NOTE, "sf_start\n"));
5148
5149 if (cmd->cmd_state == SF_STATE_ISSUED) {
5150 cmn_err(CE_PANIC, "sf: issuing packet twice 0x%p\n",
5151 (void *)cmd);
5152 }
5153
5154 /* prepare the packet for transport */
5155 if ((rval = sf_prepare_pkt(sf, cmd, target)) != TRAN_ACCEPT) {
5156 return (rval);
5157 }
5158
5159 if (target->sft_state & (SF_TARGET_BUSY|SF_TARGET_OFFLINE)) {
5160 if (target->sft_state & SF_TARGET_OFFLINE) {
5161 return (TRAN_FATAL_ERROR);
5162 }
5163 if (pkt->pkt_flags & FLAG_NOINTR) {
5164 return (TRAN_BUSY);
5165 }
5166 mutex_enter(&sf->sf_cmd_mutex);
5167 sf->sf_use_lock = TRUE;
5168 goto enque;
5169 }
5170
5171
5172 /* if no interrupts then do polled I/O */
5173 if (pkt->pkt_flags & FLAG_NOINTR) {
5174 return (sf_dopoll(sf, cmd));
5175 }
5176
5177 /* regular interrupt-driven I/O */
5178
5179 if (!sf->sf_use_lock) {
5180
5181 /* locking no needed */
5182
5183 cmd->cmd_timeout = cmd->cmd_pkt->pkt_time ?
5184 sf_watchdog_time + cmd->cmd_pkt->pkt_time : 0;
5185 cmd->cmd_state = SF_STATE_ISSUED;
5186
5187 /* call the transport to send a pkt */
5188 if (soc_transport(sf->sf_sochandle, cmd->cmd_fp_pkt,
5189 FCAL_NOSLEEP, CQ_REQUEST_1) != FCAL_TRANSPORT_SUCCESS) {
5190 cmd->cmd_state = SF_STATE_IDLE;
5191 return (TRAN_BADPKT);
5192 }
5193 return (TRAN_ACCEPT);
5194 }
5195
5196 /* regular I/O using locking */
5197
5198 mutex_enter(&sf->sf_cmd_mutex);
5199 if ((sf->sf_ncmds >= sf->sf_throttle) ||
5200 (sf->sf_pkt_head != NULL)) {
5201 enque:
5202 /*
5203 * either we're throttling back or there are already commands
5204 * on the queue, so enqueue this one for later
5205 */
5206 cmd->cmd_flags |= CFLAG_IN_QUEUE;
5207 if (sf->sf_pkt_head != NULL) {
5208 /* add to the queue */
5209 sf->sf_pkt_tail->cmd_next = cmd;
5210 cmd->cmd_next = NULL;
5211 sf->sf_pkt_tail = cmd;
5212 } else {
5213 /* this is the first entry in the queue */
5214 sf->sf_pkt_head = sf->sf_pkt_tail = cmd;
5215 cmd->cmd_next = NULL;
5216 }
5217 mutex_exit(&sf->sf_cmd_mutex);
5218 return (TRAN_ACCEPT);
5219 }
5220
5221 /*
5222 * start this packet now
5223 */
5224
5225 /* still have cmd mutex */
5226 return (sf_start_internal(sf, cmd));
5227 }
5228
5229
5230 /*
5231 * internal routine to start a packet from the queue now
5232 *
5233 * enter with cmd mutex held and leave with it released
5234 */
5235 static int
sf_start_internal(struct sf * sf,struct sf_pkt * cmd)5236 sf_start_internal(struct sf *sf, struct sf_pkt *cmd)
5237 {
5238 /* we have the cmd mutex */
5239 sf->sf_ncmds++;
5240 mutex_exit(&sf->sf_cmd_mutex);
5241
5242 ASSERT(cmd->cmd_state != SF_STATE_ISSUED);
5243 SF_DEBUG(6, (sf, CE_NOTE, "sf_start_internal\n"));
5244
5245 cmd->cmd_timeout = cmd->cmd_pkt->pkt_time ? sf_watchdog_time +
5246 cmd->cmd_pkt->pkt_time : 0;
5247 cmd->cmd_state = SF_STATE_ISSUED;
5248
5249 /* call transport to send the pkt */
5250 if (soc_transport(sf->sf_sochandle, cmd->cmd_fp_pkt, FCAL_NOSLEEP,
5251 CQ_REQUEST_1) != FCAL_TRANSPORT_SUCCESS) {
5252 cmd->cmd_state = SF_STATE_IDLE;
5253 mutex_enter(&sf->sf_cmd_mutex);
5254 sf->sf_ncmds--;
5255 mutex_exit(&sf->sf_cmd_mutex);
5256 return (TRAN_BADPKT);
5257 }
5258 return (TRAN_ACCEPT);
5259 }
5260
5261
5262 /*
5263 * prepare a packet for transport
5264 */
5265 static int
sf_prepare_pkt(struct sf * sf,struct sf_pkt * cmd,struct sf_target * target)5266 sf_prepare_pkt(struct sf *sf, struct sf_pkt *cmd, struct sf_target *target)
5267 {
5268 struct fcp_cmd *fcmd = cmd->cmd_block;
5269
5270 /* XXXX Need to set the LUN ? */
5271 bcopy((caddr_t)&target->sft_lun.b,
5272 (caddr_t)&fcmd->fcp_ent_addr,
5273 FCP_LUN_SIZE);
5274 cmd->cmd_pkt->pkt_reason = CMD_CMPLT;
5275 cmd->cmd_pkt->pkt_state = 0;
5276 cmd->cmd_pkt->pkt_statistics = 0;
5277
5278
5279 if ((cmd->cmd_pkt->pkt_comp == NULL) &&
5280 ((cmd->cmd_pkt->pkt_flags & FLAG_NOINTR) == 0)) {
5281 return (TRAN_BADPKT);
5282 }
5283
5284 /* invalidate imp field(s) of rsp block */
5285 cmd->cmd_rsp_block->fcp_u.i_fcp_status = SF_BAD_DMA_MAGIC;
5286
5287 /* set up amt of I/O to do */
5288 if (cmd->cmd_flags & CFLAG_DMAVALID) {
5289 cmd->cmd_pkt->pkt_resid = cmd->cmd_dmacount;
5290 if (cmd->cmd_flags & CFLAG_CMDIOPB) {
5291 (void) ddi_dma_sync(cmd->cmd_dmahandle, 0, 0,
5292 DDI_DMA_SYNC_FORDEV);
5293 }
5294 } else {
5295 cmd->cmd_pkt->pkt_resid = 0;
5296 }
5297
5298 /* set up the Tagged Queuing type */
5299 if (cmd->cmd_pkt->pkt_flags & FLAG_HTAG) {
5300 fcmd->fcp_cntl.cntl_qtype = FCP_QTYPE_HEAD_OF_Q;
5301 } else if (cmd->cmd_pkt->pkt_flags & FLAG_OTAG) {
5302 fcmd->fcp_cntl.cntl_qtype = FCP_QTYPE_ORDERED;
5303 }
5304
5305 /*
5306 * Sync the cmd segment
5307 */
5308 (void) ddi_dma_sync(cmd->cmd_cr_pool->cmd_dma_handle,
5309 (caddr_t)fcmd - cmd->cmd_cr_pool->cmd_base,
5310 sizeof (struct fcp_cmd), DDI_DMA_SYNC_FORDEV);
5311
5312 sf_fill_ids(sf, cmd, target);
5313 return (TRAN_ACCEPT);
5314 }
5315
5316
5317 /*
5318 * fill in packet hdr source and destination IDs and hdr byte count
5319 */
5320 static void
sf_fill_ids(struct sf * sf,struct sf_pkt * cmd,struct sf_target * target)5321 sf_fill_ids(struct sf *sf, struct sf_pkt *cmd, struct sf_target *target)
5322 {
5323 struct fcal_packet *fpkt = cmd->cmd_fp_pkt;
5324 fc_frame_header_t *hp;
5325
5326
5327 hp = &fpkt->fcal_socal_request.sr_fc_frame_hdr;
5328 hp->d_id = target->sft_al_pa;
5329 hp->s_id = sf->sf_al_pa;
5330 fpkt->fcal_socal_request.sr_soc_hdr.sh_byte_cnt =
5331 cmd->cmd_dmacookie.dmac_size;
5332 }
5333
5334
5335 /*
5336 * do polled I/O using transport
5337 */
5338 static int
sf_dopoll(struct sf * sf,struct sf_pkt * cmd)5339 sf_dopoll(struct sf *sf, struct sf_pkt *cmd)
5340 {
5341 int timeout;
5342 int rval;
5343
5344
5345 mutex_enter(&sf->sf_cmd_mutex);
5346 sf->sf_ncmds++;
5347 mutex_exit(&sf->sf_cmd_mutex);
5348
5349 timeout = cmd->cmd_pkt->pkt_time ? cmd->cmd_pkt->pkt_time
5350 : SF_POLL_TIMEOUT;
5351 cmd->cmd_timeout = 0;
5352 cmd->cmd_fp_pkt->fcal_pkt_comp = NULL;
5353 cmd->cmd_state = SF_STATE_ISSUED;
5354
5355 /* call transport to send a pkt polled */
5356 rval = soc_transport_poll(sf->sf_sochandle, cmd->cmd_fp_pkt,
5357 timeout*1000000, CQ_REQUEST_1);
5358 mutex_enter(&cmd->cmd_abort_mutex);
5359 cmd->cmd_fp_pkt->fcal_pkt_comp = sf_cmd_callback;
5360 if (rval != FCAL_TRANSPORT_SUCCESS) {
5361 if (rval == FCAL_TRANSPORT_TIMEOUT) {
5362 cmd->cmd_state = SF_STATE_ABORTING;
5363 mutex_exit(&cmd->cmd_abort_mutex);
5364 (void) sf_target_timeout(sf, cmd);
5365 } else {
5366 mutex_exit(&cmd->cmd_abort_mutex);
5367 }
5368 cmd->cmd_state = SF_STATE_IDLE;
5369 cmd->cmd_fp_pkt->fcal_pkt_comp = sf_cmd_callback;
5370 mutex_enter(&sf->sf_cmd_mutex);
5371 sf->sf_ncmds--;
5372 mutex_exit(&sf->sf_cmd_mutex);
5373 return (TRAN_BADPKT);
5374 }
5375 mutex_exit(&cmd->cmd_abort_mutex);
5376 cmd->cmd_fp_pkt->fcal_pkt_comp = sf_cmd_callback;
5377 sf_cmd_callback(cmd->cmd_fp_pkt);
5378 return (TRAN_ACCEPT);
5379 }
5380
5381
5382 /* a shortcut for defining debug messages below */
5383 #ifdef DEBUG
5384 #define SF_DMSG1(s) msg1 = s
5385 #else
5386 #define SF_DMSG1(s) /* do nothing */
5387 #endif
5388
5389
5390 /*
5391 * the pkt_comp callback for command packets
5392 */
5393 static void
sf_cmd_callback(struct fcal_packet * fpkt)5394 sf_cmd_callback(struct fcal_packet *fpkt)
5395 {
5396 struct sf_pkt *cmd = (struct sf_pkt *)fpkt->fcal_pkt_private;
5397 struct scsi_pkt *pkt = cmd->cmd_pkt;
5398 struct sf *sf = ADDR2SF(&pkt->pkt_address);
5399 struct sf_target *target = ADDR2TARGET(&pkt->pkt_address);
5400 struct fcp_rsp *rsp;
5401 char *msg1 = NULL;
5402 char *msg2 = NULL;
5403 short ncmds;
5404 int tgt_id;
5405 int good_scsi_status = TRUE;
5406
5407
5408
5409 if (cmd->cmd_state == SF_STATE_IDLE) {
5410 cmn_err(CE_PANIC, "sf: completing idle packet 0x%p\n",
5411 (void *)cmd);
5412 }
5413
5414 mutex_enter(&cmd->cmd_abort_mutex);
5415 if (cmd->cmd_state == SF_STATE_ABORTING) {
5416 /* cmd already being aborted -- nothing to do */
5417 mutex_exit(&cmd->cmd_abort_mutex);
5418 return;
5419 }
5420
5421 cmd->cmd_state = SF_STATE_IDLE;
5422 mutex_exit(&cmd->cmd_abort_mutex);
5423
5424 if (fpkt->fcal_pkt_status == FCAL_STATUS_OK) {
5425
5426 (void) ddi_dma_sync(cmd->cmd_cr_pool->rsp_dma_handle,
5427 (caddr_t)cmd->cmd_rsp_block - cmd->cmd_cr_pool->rsp_base,
5428 FCP_MAX_RSP_IU_SIZE, DDI_DMA_SYNC_FORKERNEL);
5429
5430 rsp = (struct fcp_rsp *)cmd->cmd_rsp_block;
5431
5432 if (rsp->fcp_u.i_fcp_status == SF_BAD_DMA_MAGIC) {
5433
5434 if (sf_core && (sf_core & SF_CORE_BAD_DMA)) {
5435 sf_token = (int *)(uintptr_t)
5436 fpkt->fcal_socal_request.\
5437 sr_soc_hdr.sh_request_token;
5438 (void) soc_take_core(sf->sf_sochandle,
5439 sf->sf_socp);
5440 }
5441
5442 pkt->pkt_reason = CMD_INCOMPLETE;
5443 pkt->pkt_state = STATE_GOT_BUS;
5444 pkt->pkt_statistics |= STAT_ABORTED;
5445
5446 } else {
5447
5448 pkt->pkt_state = STATE_GOT_BUS | STATE_GOT_TARGET |
5449 STATE_SENT_CMD | STATE_GOT_STATUS;
5450 pkt->pkt_resid = 0;
5451 if (cmd->cmd_flags & CFLAG_DMAVALID) {
5452 pkt->pkt_state |= STATE_XFERRED_DATA;
5453 }
5454
5455 if ((pkt->pkt_scbp != NULL) &&
5456 ((*(pkt->pkt_scbp) =
5457 rsp->fcp_u.fcp_status.scsi_status)
5458 != STATUS_GOOD)) {
5459 good_scsi_status = FALSE;
5460 /*
5461 * The next two checks make sure that if there
5462 * is no sense data or a valid response and
5463 * the command came back with check condition,
5464 * the command should be retried
5465 */
5466 if (!rsp->fcp_u.fcp_status.rsp_len_set &&
5467 !rsp->fcp_u.fcp_status.sense_len_set) {
5468 pkt->pkt_state &= ~STATE_XFERRED_DATA;
5469 pkt->pkt_resid = cmd->cmd_dmacount;
5470 }
5471 }
5472
5473 if ((cmd->cmd_flags & CFLAG_CMDIOPB) &&
5474 (pkt->pkt_state & STATE_XFERRED_DATA)) {
5475 (void) ddi_dma_sync(cmd->cmd_dmahandle, 0,
5476 (uint_t)0, DDI_DMA_SYNC_FORCPU);
5477 }
5478 /*
5479 * Update the transfer resid, if appropriate
5480 */
5481 if (rsp->fcp_u.fcp_status.resid_over ||
5482 rsp->fcp_u.fcp_status.resid_under)
5483 pkt->pkt_resid = rsp->fcp_resid;
5484
5485 /*
5486 * Check to see if the SCSI command failed.
5487 *
5488 */
5489
5490 /*
5491 * First see if we got a FCP protocol error.
5492 */
5493 if (rsp->fcp_u.fcp_status.rsp_len_set) {
5494 struct fcp_rsp_info *bep;
5495
5496 bep = (struct fcp_rsp_info *)
5497 (&rsp->fcp_response_len + 1);
5498 if (bep->rsp_code != FCP_NO_FAILURE) {
5499 pkt->pkt_reason = CMD_TRAN_ERR;
5500 tgt_id = pkt->pkt_address.a_target;
5501 switch (bep->rsp_code) {
5502 case FCP_CMND_INVALID:
5503 SF_DMSG1("FCP_RSP FCP_CMND "
5504 "fields invalid");
5505 break;
5506 case FCP_TASK_MGMT_NOT_SUPPTD:
5507 SF_DMSG1("FCP_RSP Task"
5508 "Management Function"
5509 "Not Supported");
5510 break;
5511 case FCP_TASK_MGMT_FAILED:
5512 SF_DMSG1("FCP_RSP Task "
5513 "Management Function"
5514 "Failed");
5515 sf->sf_stats.tstats[tgt_id].
5516 task_mgmt_failures++;
5517 break;
5518 case FCP_DATA_RO_MISMATCH:
5519 SF_DMSG1("FCP_RSP FCP_DATA RO "
5520 "mismatch with "
5521 "FCP_XFER_RDY DATA_RO");
5522 sf->sf_stats.tstats[tgt_id].
5523 data_ro_mismatches++;
5524 break;
5525 case FCP_DL_LEN_MISMATCH:
5526 SF_DMSG1("FCP_RSP FCP_DATA "
5527 "length "
5528 "different than BURST_LEN");
5529 sf->sf_stats.tstats[tgt_id].
5530 dl_len_mismatches++;
5531 break;
5532 default:
5533 SF_DMSG1("FCP_RSP invalid "
5534 "RSP_CODE");
5535 break;
5536 }
5537 }
5538 }
5539
5540 /*
5541 * See if we got a SCSI error with sense data
5542 */
5543 if (rsp->fcp_u.fcp_status.sense_len_set) {
5544 uchar_t rqlen = min(rsp->fcp_sense_len,
5545 sizeof (struct scsi_extended_sense));
5546 caddr_t sense = (caddr_t)rsp +
5547 sizeof (struct fcp_rsp) +
5548 rsp->fcp_response_len;
5549 struct scsi_arq_status *arq;
5550 struct scsi_extended_sense *sensep =
5551 (struct scsi_extended_sense *)sense;
5552
5553 if (rsp->fcp_u.fcp_status.scsi_status !=
5554 STATUS_GOOD) {
5555 if (rsp->fcp_u.fcp_status.scsi_status
5556 == STATUS_CHECK) {
5557 if (sensep->es_key ==
5558 KEY_RECOVERABLE_ERROR)
5559 good_scsi_status = 1;
5560 if (sensep->es_key ==
5561 KEY_UNIT_ATTENTION &&
5562 sensep->es_add_code == 0x3f &&
5563 sensep->es_qual_code == 0x0e) {
5564 /* REPORT_LUNS_HAS_CHANGED */
5565 sf_log(sf, CE_NOTE,
5566 "!REPORT_LUNS_HAS_CHANGED\n");
5567 sf_force_lip(sf);
5568 }
5569 }
5570 }
5571
5572 if ((pkt->pkt_scbp != NULL) &&
5573 (cmd->cmd_scblen >=
5574 sizeof (struct scsi_arq_status))) {
5575
5576 pkt->pkt_state |= STATE_ARQ_DONE;
5577
5578 arq = (struct scsi_arq_status *)pkt->pkt_scbp;
5579 /*
5580 * copy out sense information
5581 */
5582 bcopy(sense, (caddr_t)&arq->sts_sensedata,
5583 rqlen);
5584 arq->sts_rqpkt_resid =
5585 sizeof (struct scsi_extended_sense) -
5586 rqlen;
5587 *((uchar_t *)&arq->sts_rqpkt_status) =
5588 STATUS_GOOD;
5589 arq->sts_rqpkt_reason = 0;
5590 arq->sts_rqpkt_statistics = 0;
5591 arq->sts_rqpkt_state = STATE_GOT_BUS |
5592 STATE_GOT_TARGET | STATE_SENT_CMD |
5593 STATE_GOT_STATUS | STATE_ARQ_DONE |
5594 STATE_XFERRED_DATA;
5595 }
5596 target->sft_alive = TRUE;
5597 }
5598
5599 /*
5600 * The firmware returns the number of bytes actually
5601 * xfered into/out of host. Compare this with what
5602 * we asked and if it is different, we lost frames ?
5603 */
5604 if ((pkt->pkt_reason == 0) && (pkt->pkt_resid == 0) &&
5605 (good_scsi_status) &&
5606 (pkt->pkt_state & STATE_XFERRED_DATA) &&
5607 (!(cmd->cmd_flags & CFLAG_CMDIOPB)) &&
5608 (target->sft_device_type != DTYPE_ESI)) {
5609 int byte_cnt =
5610 fpkt->fcal_socal_request.
5611 sr_soc_hdr.sh_byte_cnt;
5612 if (cmd->cmd_flags & CFLAG_DMASEND) {
5613 if (byte_cnt != 0) {
5614 sf_log(sf, CE_NOTE,
5615 "!sf_cmd_callback: Lost Frame: "
5616 "(write) received 0x%x expected"
5617 " 0x%x target 0x%x\n",
5618 byte_cnt, cmd->cmd_dmacount,
5619 sf_alpa_to_switch[
5620 target->sft_al_pa]);
5621 pkt->pkt_reason = CMD_INCOMPLETE;
5622 pkt->pkt_statistics |= STAT_ABORTED;
5623 }
5624 } else if (byte_cnt < cmd->cmd_dmacount) {
5625 sf_log(sf, CE_NOTE,
5626 "!sf_cmd_callback: "
5627 "Lost Frame: (read) "
5628 "received 0x%x expected 0x%x "
5629 "target 0x%x\n", byte_cnt,
5630 cmd->cmd_dmacount,
5631 sf_alpa_to_switch[
5632 target->sft_al_pa]);
5633 pkt->pkt_reason = CMD_INCOMPLETE;
5634 pkt->pkt_statistics |= STAT_ABORTED;
5635 }
5636 }
5637 }
5638
5639 } else {
5640
5641 /* pkt status was not ok */
5642
5643 switch (fpkt->fcal_pkt_status) {
5644
5645 case FCAL_STATUS_ERR_OFFLINE:
5646 SF_DMSG1("Fibre Channel Offline");
5647 mutex_enter(&target->sft_mutex);
5648 if (!(target->sft_state & SF_TARGET_OFFLINE)) {
5649 target->sft_state |= (SF_TARGET_BUSY
5650 | SF_TARGET_MARK);
5651 }
5652 mutex_exit(&target->sft_mutex);
5653 (void) ndi_event_retrieve_cookie(sf->sf_event_hdl,
5654 target->sft_dip, FCAL_REMOVE_EVENT,
5655 &sf_remove_eid, NDI_EVENT_NOPASS);
5656 (void) ndi_event_run_callbacks(sf->sf_event_hdl,
5657 target->sft_dip, sf_remove_eid, NULL);
5658 pkt->pkt_reason = CMD_TRAN_ERR;
5659 pkt->pkt_statistics |= STAT_BUS_RESET;
5660 break;
5661
5662 case FCAL_STATUS_MAX_XCHG_EXCEEDED:
5663 sf_throttle(sf);
5664 sf->sf_use_lock = TRUE;
5665 pkt->pkt_reason = CMD_TRAN_ERR;
5666 pkt->pkt_state = STATE_GOT_BUS;
5667 pkt->pkt_statistics |= STAT_ABORTED;
5668 break;
5669
5670 case FCAL_STATUS_TIMEOUT:
5671 SF_DMSG1("Fibre Channel Timeout");
5672 pkt->pkt_reason = CMD_TIMEOUT;
5673 break;
5674
5675 case FCAL_STATUS_ERR_OVERRUN:
5676 SF_DMSG1("CMD_DATA_OVR");
5677 pkt->pkt_reason = CMD_DATA_OVR;
5678 break;
5679
5680 case FCAL_STATUS_UNKNOWN_CQ_TYPE:
5681 SF_DMSG1("Unknown CQ type");
5682 pkt->pkt_reason = CMD_TRAN_ERR;
5683 break;
5684
5685 case FCAL_STATUS_BAD_SEG_CNT:
5686 SF_DMSG1("Bad SEG CNT");
5687 pkt->pkt_reason = CMD_TRAN_ERR;
5688 break;
5689
5690 case FCAL_STATUS_BAD_XID:
5691 SF_DMSG1("Fibre Channel Invalid X_ID");
5692 pkt->pkt_reason = CMD_TRAN_ERR;
5693 break;
5694
5695 case FCAL_STATUS_XCHG_BUSY:
5696 SF_DMSG1("Fibre Channel Exchange Busy");
5697 pkt->pkt_reason = CMD_TRAN_ERR;
5698 break;
5699
5700 case FCAL_STATUS_INSUFFICIENT_CQES:
5701 SF_DMSG1("Insufficient CQEs");
5702 pkt->pkt_reason = CMD_TRAN_ERR;
5703 break;
5704
5705 case FCAL_STATUS_ALLOC_FAIL:
5706 SF_DMSG1("ALLOC FAIL");
5707 pkt->pkt_reason = CMD_TRAN_ERR;
5708 break;
5709
5710 case FCAL_STATUS_BAD_SID:
5711 SF_DMSG1("Fibre Channel Invalid S_ID");
5712 pkt->pkt_reason = CMD_TRAN_ERR;
5713 break;
5714
5715 case FCAL_STATUS_INCOMPLETE_DMA_ERR:
5716 if (sf_core && (sf_core & SF_CORE_INCOMPLETE_DMA)) {
5717 sf_token = (int *)(uintptr_t)
5718 fpkt->fcal_socal_request.\
5719 sr_soc_hdr.sh_request_token;
5720 (void) soc_take_core(sf->sf_sochandle,
5721 sf->sf_socp);
5722 sf_core = 0;
5723 }
5724 msg2 =
5725 "INCOMPLETE DMA XFER due to bad SOC+ card, replace HBA";
5726 pkt->pkt_reason = CMD_INCOMPLETE;
5727 pkt->pkt_state = STATE_GOT_BUS;
5728 pkt->pkt_statistics |= STAT_ABORTED;
5729 break;
5730
5731 case FCAL_STATUS_CRC_ERR:
5732 msg2 = "Fibre Channel CRC Error on frames";
5733 pkt->pkt_reason = CMD_INCOMPLETE;
5734 pkt->pkt_state = STATE_GOT_BUS;
5735 pkt->pkt_statistics |= STAT_ABORTED;
5736 break;
5737
5738 case FCAL_STATUS_NO_SEQ_INIT:
5739 SF_DMSG1("Fibre Channel Seq Init Error");
5740 pkt->pkt_reason = CMD_TRAN_ERR;
5741 break;
5742
5743 case FCAL_STATUS_OPEN_FAIL:
5744 pkt->pkt_reason = CMD_TRAN_ERR;
5745 SF_DMSG1("Fibre Channel Open Failure");
5746 if ((target->sft_state & (SF_TARGET_BUSY |
5747 SF_TARGET_MARK | SF_TARGET_OFFLINE)) == 0) {
5748 sf_log(sf, CE_NOTE,
5749 "!Open failure to target 0x%x "
5750 "forcing LIP\n",
5751 sf_alpa_to_switch[target->sft_al_pa]);
5752 sf_force_lip(sf);
5753 }
5754 break;
5755
5756
5757 case FCAL_STATUS_ONLINE_TIMEOUT:
5758 SF_DMSG1("Fibre Channel Online Timeout");
5759 pkt->pkt_reason = CMD_TRAN_ERR;
5760 break;
5761
5762 default:
5763 SF_DMSG1("Unknown FC Status");
5764 pkt->pkt_reason = CMD_TRAN_ERR;
5765 break;
5766 }
5767 }
5768
5769 #ifdef DEBUG
5770 /*
5771 * msg1 will be non-NULL if we've detected some sort of error
5772 */
5773 if (msg1 != NULL && sfdebug >= 4) {
5774 sf_log(sf, CE_WARN,
5775 "!Transport error on cmd=0x%p target=0x%x: %s\n",
5776 (void *)fpkt, pkt->pkt_address.a_target, msg1);
5777 }
5778 #endif
5779
5780 if (msg2 != NULL) {
5781 sf_log(sf, CE_WARN, "!Transport error on target=0x%x: %s\n",
5782 pkt->pkt_address.a_target, msg2);
5783 }
5784
5785 ncmds = fpkt->fcal_ncmds;
5786 ASSERT(ncmds >= 0);
5787 if (ncmds >= (sf->sf_throttle - SF_HI_CMD_DELTA)) {
5788 #ifdef DEBUG
5789 if (!sf->sf_use_lock) {
5790 SF_DEBUG(4, (sf, CE_NOTE, "use lock flag on\n"));
5791 }
5792 #endif
5793 sf->sf_use_lock = TRUE;
5794 }
5795
5796 mutex_enter(&sf->sf_cmd_mutex);
5797 sf->sf_ncmds = ncmds;
5798 sf_throttle_start(sf);
5799 mutex_exit(&sf->sf_cmd_mutex);
5800
5801 if (!msg1 && !msg2)
5802 SF_DEBUG(6, (sf, CE_NOTE, "Completing pkt 0x%p\n",
5803 (void *)pkt));
5804 if (pkt->pkt_comp != NULL) {
5805 (*pkt->pkt_comp)(pkt);
5806 }
5807 }
5808
5809 #undef SF_DMSG1
5810
5811
5812
5813 /*
5814 * start throttling for this instance
5815 */
5816 static void
sf_throttle_start(struct sf * sf)5817 sf_throttle_start(struct sf *sf)
5818 {
5819 struct sf_pkt *cmd, *prev_cmd = NULL;
5820 struct scsi_pkt *pkt;
5821 struct sf_target *target;
5822
5823
5824 ASSERT(mutex_owned(&sf->sf_cmd_mutex));
5825
5826 cmd = sf->sf_pkt_head;
5827 while ((cmd != NULL) &&
5828 (sf->sf_state == SF_STATE_ONLINE) &&
5829 (sf->sf_ncmds < sf->sf_throttle)) {
5830
5831 pkt = CMD2PKT(cmd);
5832
5833 target = ADDR2TARGET(&pkt->pkt_address);
5834 if (target->sft_state & SF_TARGET_BUSY) {
5835 /* this command is busy -- go to next */
5836 ASSERT(cmd->cmd_state != SF_STATE_ISSUED);
5837 prev_cmd = cmd;
5838 cmd = cmd->cmd_next;
5839 continue;
5840 }
5841
5842 ASSERT(cmd->cmd_state != SF_STATE_ISSUED);
5843
5844 /* this cmd not busy and not issued */
5845
5846 /* remove this packet from the queue */
5847 if (sf->sf_pkt_head == cmd) {
5848 /* this was the first packet */
5849 sf->sf_pkt_head = cmd->cmd_next;
5850 } else if (sf->sf_pkt_tail == cmd) {
5851 /* this was the last packet */
5852 sf->sf_pkt_tail = prev_cmd;
5853 if (prev_cmd != NULL) {
5854 prev_cmd->cmd_next = NULL;
5855 }
5856 } else {
5857 /* some packet in the middle of the queue */
5858 ASSERT(prev_cmd != NULL);
5859 prev_cmd->cmd_next = cmd->cmd_next;
5860 }
5861 cmd->cmd_flags &= ~CFLAG_IN_QUEUE;
5862
5863 if (target->sft_state & SF_TARGET_OFFLINE) {
5864 mutex_exit(&sf->sf_cmd_mutex);
5865 pkt->pkt_reason = CMD_TRAN_ERR;
5866 if (pkt->pkt_comp != NULL) {
5867 (*pkt->pkt_comp)(cmd->cmd_pkt);
5868 }
5869 } else {
5870 sf_fill_ids(sf, cmd, target);
5871 if (sf_start_internal(sf, cmd) != TRAN_ACCEPT) {
5872 pkt->pkt_reason = CMD_TRAN_ERR;
5873 if (pkt->pkt_comp != NULL) {
5874 (*pkt->pkt_comp)(cmd->cmd_pkt);
5875 }
5876 }
5877 }
5878 mutex_enter(&sf->sf_cmd_mutex);
5879 cmd = sf->sf_pkt_head;
5880 prev_cmd = NULL;
5881 }
5882 }
5883
5884
5885 /*
5886 * called when the max exchange value is exceeded to throttle back commands
5887 */
5888 static void
sf_throttle(struct sf * sf)5889 sf_throttle(struct sf *sf)
5890 {
5891 int cmdmax = sf->sf_sochandle->fcal_cmdmax;
5892
5893
5894 mutex_enter(&sf->sf_cmd_mutex);
5895
5896 sf->sf_flag = TRUE;
5897
5898 if (sf->sf_ncmds > (cmdmax / 2)) {
5899 sf->sf_throttle = cmdmax / 2;
5900 } else {
5901 if (sf->sf_ncmds > SF_DECR_DELTA) {
5902 sf->sf_throttle = sf->sf_ncmds - SF_DECR_DELTA;
5903 } else {
5904 /*
5905 * This case is just a safeguard, should not really
5906 * happen(ncmds < SF_DECR_DELTA and MAX_EXCHG exceed
5907 */
5908 sf->sf_throttle = SF_DECR_DELTA;
5909 }
5910 }
5911 mutex_exit(&sf->sf_cmd_mutex);
5912
5913 sf = sf->sf_sibling;
5914 if (sf != NULL) {
5915 mutex_enter(&sf->sf_cmd_mutex);
5916 sf->sf_flag = TRUE;
5917 if (sf->sf_ncmds >= (cmdmax / 2)) {
5918 sf->sf_throttle = cmdmax / 2;
5919 } else {
5920 if (sf->sf_ncmds > SF_DECR_DELTA) {
5921 sf->sf_throttle = sf->sf_ncmds - SF_DECR_DELTA;
5922 } else {
5923 sf->sf_throttle = SF_DECR_DELTA;
5924 }
5925 }
5926
5927 mutex_exit(&sf->sf_cmd_mutex);
5928 }
5929 }
5930
5931
5932 /*
5933 * sf watchdog routine, called for a timeout
5934 */
5935 /*ARGSUSED*/
5936 static void
sf_watch(void * arg)5937 sf_watch(void *arg)
5938 {
5939 struct sf *sf;
5940 struct sf_els_hdr *privp;
5941 static int count = 0, pscan_count = 0;
5942 int cmdmax, i, mescount = 0;
5943 struct sf_target *target;
5944
5945
5946 sf_watchdog_time += sf_watchdog_timeout;
5947 count++;
5948 pscan_count++;
5949
5950 mutex_enter(&sf_global_mutex);
5951 sf_watch_running = 1;
5952 for (sf = sf_head; sf != NULL; sf = sf->sf_next) {
5953
5954 mutex_exit(&sf_global_mutex);
5955
5956 /* disable throttling while we're suspended */
5957 mutex_enter(&sf->sf_mutex);
5958 if (sf->sf_state & SF_STATE_SUSPENDED) {
5959 mutex_exit(&sf->sf_mutex);
5960 SF_DEBUG(1, (sf, CE_CONT,
5961 "sf_watch, sf%d:throttle disabled "
5962 "due to DDI_SUSPEND\n",
5963 ddi_get_instance(sf->sf_dip)));
5964 mutex_enter(&sf_global_mutex);
5965 continue;
5966 }
5967 mutex_exit(&sf->sf_mutex);
5968
5969 cmdmax = sf->sf_sochandle->fcal_cmdmax;
5970
5971 if (sf->sf_take_core) {
5972 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
5973 }
5974
5975 mutex_enter(&sf->sf_cmd_mutex);
5976
5977 if (!sf->sf_flag) {
5978 if (sf->sf_throttle < (cmdmax / 2)) {
5979 sf->sf_throttle = cmdmax / 2;
5980 } else if ((sf->sf_throttle += SF_INCR_DELTA) >
5981 cmdmax) {
5982 sf->sf_throttle = cmdmax;
5983 }
5984 } else {
5985 sf->sf_flag = FALSE;
5986 }
5987
5988 sf->sf_ncmds_exp_avg = (sf->sf_ncmds + sf->sf_ncmds_exp_avg)
5989 >> 2;
5990 if ((sf->sf_ncmds <= (sf->sf_throttle - SF_LO_CMD_DELTA)) &&
5991 (sf->sf_pkt_head == NULL)) {
5992 #ifdef DEBUG
5993 if (sf->sf_use_lock) {
5994 SF_DEBUG(4, (sf, CE_NOTE,
5995 "use lock flag off\n"));
5996 }
5997 #endif
5998 sf->sf_use_lock = FALSE;
5999 }
6000
6001 if (sf->sf_state == SF_STATE_ONLINE && sf->sf_pkt_head &&
6002 sf->sf_ncmds < sf->sf_throttle) {
6003 sf_throttle_start(sf);
6004 }
6005
6006 mutex_exit(&sf->sf_cmd_mutex);
6007
6008 if (pscan_count >= sf_pool_scan_cnt) {
6009 if (sf->sf_ncmds_exp_avg < (sf->sf_cr_pool_cnt <<
6010 SF_LOG2_ELEMS_IN_POOL) - SF_FREE_CR_EPSILON) {
6011 sf_crpool_free(sf);
6012 }
6013 }
6014 mutex_enter(&sf->sf_mutex);
6015
6016 privp = sf->sf_els_list;
6017 while (privp != NULL) {
6018 if (privp->timeout < sf_watchdog_time) {
6019 /* timeout this command */
6020 privp = sf_els_timeout(sf, privp);
6021 } else if ((privp->timeout == SF_INVALID_TIMEOUT) &&
6022 (privp->lip_cnt != sf->sf_lip_cnt)) {
6023 if (privp->prev != NULL) {
6024 privp->prev->next = privp->next;
6025 }
6026 if (sf->sf_els_list == privp) {
6027 sf->sf_els_list = privp->next;
6028 }
6029 if (privp->next != NULL) {
6030 privp->next->prev = privp->prev;
6031 }
6032 mutex_exit(&sf->sf_mutex);
6033 sf_els_free(privp->fpkt);
6034 mutex_enter(&sf->sf_mutex);
6035 privp = sf->sf_els_list;
6036 } else {
6037 privp = privp->next;
6038 }
6039 }
6040
6041 if (sf->sf_online_timer && sf->sf_online_timer <
6042 sf_watchdog_time) {
6043 for (i = 0; i < sf_max_targets; i++) {
6044 target = sf->sf_targets[i];
6045 if (target != NULL) {
6046 if (!mescount && target->sft_state &
6047 SF_TARGET_BUSY) {
6048 sf_log(sf, CE_WARN, "!Loop "
6049 "Unstable: Failed to bring "
6050 "Loop Online\n");
6051 mescount = 1;
6052 }
6053 target->sft_state |= SF_TARGET_MARK;
6054 }
6055 }
6056 sf_finish_init(sf, sf->sf_lip_cnt);
6057 sf->sf_state = SF_STATE_INIT;
6058 sf->sf_online_timer = 0;
6059 }
6060
6061 if (sf->sf_state == SF_STATE_ONLINE) {
6062 mutex_exit(&sf->sf_mutex);
6063 if (count >= sf_pkt_scan_cnt) {
6064 sf_check_targets(sf);
6065 }
6066 } else if ((sf->sf_state == SF_STATE_OFFLINE) &&
6067 (sf->sf_timer < sf_watchdog_time)) {
6068 for (i = 0; i < sf_max_targets; i++) {
6069 target = sf->sf_targets[i];
6070 if ((target != NULL) &&
6071 (target->sft_state &
6072 SF_TARGET_BUSY)) {
6073 sf_log(sf, CE_WARN,
6074 "!Offline Timeout\n");
6075 if (sf_core && (sf_core &
6076 SF_CORE_OFFLINE_TIMEOUT)) {
6077 (void) soc_take_core(
6078 sf->sf_sochandle,
6079 sf->sf_socp);
6080 sf_core = 0;
6081 }
6082 break;
6083 }
6084 }
6085 sf_finish_init(sf, sf->sf_lip_cnt);
6086 sf->sf_state = SF_STATE_INIT;
6087 mutex_exit(&sf->sf_mutex);
6088 } else {
6089 mutex_exit(&sf->sf_mutex);
6090 }
6091 mutex_enter(&sf_global_mutex);
6092 }
6093 mutex_exit(&sf_global_mutex);
6094 if (count >= sf_pkt_scan_cnt) {
6095 count = 0;
6096 }
6097 if (pscan_count >= sf_pool_scan_cnt) {
6098 pscan_count = 0;
6099 }
6100
6101 /* reset timeout */
6102 sf_watchdog_id = timeout(sf_watch, (caddr_t)0, sf_watchdog_tick);
6103
6104 /* signal waiting thread */
6105 mutex_enter(&sf_global_mutex);
6106 sf_watch_running = 0;
6107 cv_broadcast(&sf_watch_cv);
6108 mutex_exit(&sf_global_mutex);
6109 }
6110
6111
6112 /*
6113 * called during a timeout to check targets
6114 */
6115 static void
sf_check_targets(struct sf * sf)6116 sf_check_targets(struct sf *sf)
6117 {
6118 struct sf_target *target;
6119 int i;
6120 struct sf_pkt *cmd;
6121 struct scsi_pkt *pkt;
6122 int lip_cnt;
6123
6124 mutex_enter(&sf->sf_mutex);
6125 lip_cnt = sf->sf_lip_cnt;
6126 mutex_exit(&sf->sf_mutex);
6127
6128 /* check scan all possible targets */
6129 for (i = 0; i < sf_max_targets; i++) {
6130 target = sf->sf_targets[i];
6131 while (target != NULL) {
6132 mutex_enter(&target->sft_pkt_mutex);
6133 if (target->sft_alive && target->sft_scan_count !=
6134 sf_target_scan_cnt) {
6135 target->sft_alive = 0;
6136 target->sft_scan_count++;
6137 mutex_exit(&target->sft_pkt_mutex);
6138 return;
6139 }
6140 target->sft_alive = 0;
6141 target->sft_scan_count = 0;
6142 cmd = target->sft_pkt_head;
6143 while (cmd != (struct sf_pkt *)&target->sft_pkt_head) {
6144 mutex_enter(&cmd->cmd_abort_mutex);
6145 if (cmd->cmd_state == SF_STATE_ISSUED &&
6146 ((cmd->cmd_timeout && sf_watchdog_time >
6147 #ifdef DEBUG
6148 cmd->cmd_timeout) || sf_abort_flag)) {
6149 sf_abort_flag = 0;
6150 #else
6151 cmd->cmd_timeout))) {
6152 #endif
6153 cmd->cmd_timeout = 0;
6154 /* prevent reset from getting at this packet */
6155 cmd->cmd_state = SF_STATE_ABORTING;
6156 mutex_exit(&cmd->cmd_abort_mutex);
6157 mutex_exit(&target->sft_pkt_mutex);
6158 sf->sf_stats.tstats[i].timeouts++;
6159 if (sf_target_timeout(sf, cmd))
6160 return;
6161 else {
6162 if (lip_cnt != sf->sf_lip_cnt) {
6163 return;
6164 } else {
6165 mutex_enter(&target->
6166 sft_pkt_mutex);
6167 cmd = target->
6168 sft_pkt_head;
6169 }
6170 }
6171 /*
6172 * if the abort and lip fail, a reset will be carried out.
6173 * But the reset will ignore this packet. We have waited at least
6174 * 20 seconds after the initial timeout. Now, complete it here.
6175 * This also takes care of spurious bad aborts.
6176 */
6177 } else if ((cmd->cmd_state ==
6178 SF_STATE_ABORTING) && (cmd->cmd_timeout
6179 <= sf_watchdog_time)) {
6180 cmd->cmd_state = SF_STATE_IDLE;
6181 mutex_exit(&cmd->cmd_abort_mutex);
6182 mutex_exit(&target->sft_pkt_mutex);
6183 SF_DEBUG(1, (sf, CE_NOTE,
6184 "Command 0x%p to sft 0x%p"
6185 " delayed release\n",
6186 (void *)cmd, (void *)target));
6187 pkt = cmd->cmd_pkt;
6188 pkt->pkt_statistics |=
6189 (STAT_TIMEOUT|STAT_ABORTED);
6190 pkt->pkt_reason = CMD_TIMEOUT;
6191 if (pkt->pkt_comp) {
6192 scsi_hba_pkt_comp(pkt);
6193 /* handle deferred_destroy case */
6194 } else {
6195 if ((cmd->cmd_block->fcp_cntl.
6196 cntl_reset == 1) ||
6197 (cmd->cmd_block->
6198 fcp_cntl.cntl_abort_tsk ==
6199 1)) {
6200 cmd->cmd_block->
6201 fcp_cntl.
6202 cntl_reset = 0;
6203 cmd->cmd_block->
6204 fcp_cntl.
6205 cntl_abort_tsk = 0;
6206 cmd->cmd_fp_pkt->
6207 fcal_pkt_comp =
6208 sf_cmd_callback;
6209 /* for cache */
6210 sf_scsi_destroy_pkt
6211 (&pkt->pkt_address,
6212 pkt);
6213 }
6214 }
6215 mutex_enter(&target->sft_pkt_mutex);
6216 cmd = target->sft_pkt_head;
6217 } else {
6218 mutex_exit(&cmd->cmd_abort_mutex);
6219 cmd = cmd->cmd_forw;
6220 }
6221 }
6222 mutex_exit(&target->sft_pkt_mutex);
6223 target = target->sft_next_lun;
6224 }
6225 }
6226 }
6227
6228
6229 /*
6230 * a command to a target has timed out
6231 * return TRUE iff cmd abort failed or timed out, else return FALSE
6232 */
6233 static int
6234 sf_target_timeout(struct sf *sf, struct sf_pkt *cmd)
6235 {
6236 int rval;
6237 struct scsi_pkt *pkt;
6238 struct fcal_packet *fpkt;
6239 int tgt_id;
6240 int retval = FALSE;
6241
6242
6243 SF_DEBUG(1, (sf, CE_NOTE, "Command 0x%p to target %x timed out\n",
6244 (void *)cmd->cmd_fp_pkt, cmd->cmd_pkt->pkt_address.a_target));
6245
6246 fpkt = cmd->cmd_fp_pkt;
6247
6248 if (sf_core && (sf_core & SF_CORE_CMD_TIMEOUT)) {
6249 sf_token = (int *)(uintptr_t)
6250 fpkt->fcal_socal_request.sr_soc_hdr.\
6251 sh_request_token;
6252 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
6253 sf_core = 0;
6254 }
6255
6256 /* call the transport to abort a command */
6257 rval = soc_abort(sf->sf_sochandle, sf->sf_socp,
6258 sf->sf_sochandle->fcal_portno, fpkt, 1);
6259
6260 switch (rval) {
6261 case FCAL_ABORTED:
6262 SF_DEBUG(1, (sf, CE_NOTE, "Command Abort succeeded\n"));
6263 pkt = cmd->cmd_pkt;
6264 cmd->cmd_state = SF_STATE_IDLE;
6265 pkt->pkt_statistics |= (STAT_TIMEOUT|STAT_ABORTED);
6266 pkt->pkt_reason = CMD_TIMEOUT;
6267 if (pkt->pkt_comp != NULL) {
6268 (*pkt->pkt_comp)(pkt);
6269 }
6270 break; /* success */
6271
6272 case FCAL_ABORT_FAILED:
6273 SF_DEBUG(1, (sf, CE_NOTE, "Command Abort failed at target\n"));
6274 pkt = cmd->cmd_pkt;
6275 cmd->cmd_state = SF_STATE_IDLE;
6276 pkt->pkt_reason = CMD_TIMEOUT;
6277 pkt->pkt_statistics |= STAT_TIMEOUT;
6278 tgt_id = pkt->pkt_address.a_target;
6279 sf->sf_stats.tstats[tgt_id].abts_failures++;
6280 if (pkt->pkt_comp != NULL) {
6281 (*pkt->pkt_comp)(pkt);
6282 }
6283 break;
6284
6285 case FCAL_BAD_ABORT:
6286 if (sf_core && (sf_core & SF_CORE_BAD_ABORT)) {
6287 sf_token = (int *)(uintptr_t)fpkt->fcal_socal_request.\
6288 sr_soc_hdr.sh_request_token;
6289 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
6290 sf_core = 0;
6291 }
6292 SF_DEBUG(1, (sf, CE_NOTE, "Command Abort bad abort\n"));
6293 cmd->cmd_timeout = sf_watchdog_time + cmd->cmd_pkt->pkt_time
6294 + 20;
6295 break;
6296
6297 case FCAL_TIMEOUT:
6298 retval = TRUE;
6299 break;
6300
6301 default:
6302 pkt = cmd->cmd_pkt;
6303 tgt_id = pkt->pkt_address.a_target;
6304 sf_log(sf, CE_WARN,
6305 "Command Abort failed target 0x%x, forcing a LIP\n", tgt_id);
6306 if (sf_core && (sf_core & SF_CORE_ABORT_TIMEOUT)) {
6307 sf_token = (int *)(uintptr_t)fpkt->fcal_socal_request.\
6308 sr_soc_hdr.sh_request_token;
6309 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
6310 sf_core = 0;
6311 }
6312 sf_force_lip(sf);
6313 retval = TRUE;
6314 break;
6315 }
6316
6317 return (retval);
6318 }
6319
6320
6321 /*
6322 * an ELS command has timed out
6323 * return ???
6324 */
6325 static struct sf_els_hdr *
6326 sf_els_timeout(struct sf *sf, struct sf_els_hdr *privp)
6327 {
6328 struct fcal_packet *fpkt;
6329 int rval, dflag, timeout = SF_ELS_TIMEOUT;
6330 uint_t lip_cnt = privp->lip_cnt;
6331 uchar_t els_code = privp->els_code;
6332 struct sf_target *target = privp->target;
6333 char what[64];
6334
6335 fpkt = privp->fpkt;
6336 dflag = privp->delayed_retry;
6337 /* use as temporary state variable */
6338 privp->timeout = SF_INVALID_TIMEOUT;
6339 mutex_exit(&sf->sf_mutex);
6340
6341 if (privp->fpkt->fcal_pkt_comp == sf_els_callback) {
6342 /*
6343 * take socal core if required. Timeouts for IB and hosts
6344 * are not very interesting, so we take socal core only
6345 * if the timeout is *not* for a IB or host.
6346 */
6347 if (sf_core && (sf_core & SF_CORE_ELS_TIMEOUT) &&
6348 ((sf_alpa_to_switch[privp->dest_nport_id] &
6349 0x0d) != 0x0d) && ((privp->dest_nport_id != 1) ||
6350 (privp->dest_nport_id != 2) ||
6351 (privp->dest_nport_id != 4) ||
6352 (privp->dest_nport_id != 8) ||
6353 (privp->dest_nport_id != 0xf))) {
6354 sf_token = (int *)(uintptr_t)fpkt->fcal_socal_request.\
6355 sr_soc_hdr.sh_request_token;
6356 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
6357 sf_core = 0;
6358 }
6359 (void) sprintf(what, "ELS 0x%x", privp->els_code);
6360 } else if (privp->fpkt->fcal_pkt_comp == sf_reportlun_callback) {
6361 if (sf_core && (sf_core & SF_CORE_REPORTLUN_TIMEOUT)) {
6362 sf_token = (int *)(uintptr_t)fpkt->fcal_socal_request.\
6363 sr_soc_hdr.sh_request_token;
6364 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
6365 sf_core = 0;
6366 }
6367 timeout = SF_FCP_TIMEOUT;
6368 (void) sprintf(what, "REPORT_LUNS");
6369 } else if (privp->fpkt->fcal_pkt_comp == sf_inq_callback) {
6370 if (sf_core && (sf_core & SF_CORE_INQUIRY_TIMEOUT)) {
6371 sf_token = (int *)(uintptr_t)
6372 fpkt->fcal_socal_request.\
6373 sr_soc_hdr.sh_request_token;
6374 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
6375 sf_core = 0;
6376 }
6377 timeout = SF_FCP_TIMEOUT;
6378 (void) sprintf(what, "INQUIRY to LUN 0x%lx",
6379 (long)SCSA_LUN(target));
6380 } else {
6381 (void) sprintf(what, "UNKNOWN OPERATION");
6382 }
6383
6384 if (dflag) {
6385 /* delayed retry */
6386 SF_DEBUG(2, (sf, CE_CONT,
6387 "!sf%d: %s to target %x delayed retry\n",
6388 ddi_get_instance(sf->sf_dip), what,
6389 sf_alpa_to_switch[privp->dest_nport_id]));
6390 privp->delayed_retry = FALSE;
6391 goto try_again;
6392 }
6393
6394 sf_log(sf, CE_NOTE, "!%s to target 0x%x alpa 0x%x timed out\n",
6395 what, sf_alpa_to_switch[privp->dest_nport_id],
6396 privp->dest_nport_id);
6397
6398 rval = soc_abort(sf->sf_sochandle, sf->sf_socp, sf->sf_sochandle
6399 ->fcal_portno, fpkt, 1);
6400 if (rval == FCAL_ABORTED || rval == FCAL_ABORT_FAILED) {
6401 SF_DEBUG(1, (sf, CE_NOTE, "!%s abort to al_pa %x succeeded\n",
6402 what, privp->dest_nport_id));
6403 try_again:
6404
6405 mutex_enter(&sf->sf_mutex);
6406 if (privp->prev != NULL) {
6407 privp->prev->next = privp->next;
6408 }
6409 if (sf->sf_els_list == privp) {
6410 sf->sf_els_list = privp->next;
6411 }
6412 if (privp->next != NULL) {
6413 privp->next->prev = privp->prev;
6414 }
6415 privp->prev = privp->next = NULL;
6416 if (lip_cnt == sf->sf_lip_cnt) {
6417 privp->timeout = sf_watchdog_time + timeout;
6418 if ((++(privp->retries) < sf_els_retries) ||
6419 (dflag && (privp->retries < SF_BSY_RETRIES))) {
6420 mutex_exit(&sf->sf_mutex);
6421 sf_log(sf, CE_NOTE,
6422 "!%s to target 0x%x retrying\n",
6423 what,
6424 sf_alpa_to_switch[privp->dest_nport_id]);
6425 if (sf_els_transport(sf, privp) == 1) {
6426 mutex_enter(&sf->sf_mutex);
6427 return (sf->sf_els_list); /* success */
6428 }
6429 mutex_enter(&sf->sf_mutex);
6430 fpkt = NULL;
6431 }
6432 if ((lip_cnt == sf->sf_lip_cnt) &&
6433 (els_code != LA_ELS_LOGO)) {
6434 if (target != NULL) {
6435 sf_offline_target(sf, target);
6436 }
6437 if (sf->sf_lip_cnt == lip_cnt) {
6438 sf->sf_device_count--;
6439 ASSERT(sf->sf_device_count >= 0);
6440 if (sf->sf_device_count == 0) {
6441 sf_finish_init(sf,
6442 sf->sf_lip_cnt);
6443 }
6444 }
6445 }
6446 privp = sf->sf_els_list;
6447 mutex_exit(&sf->sf_mutex);
6448 if (fpkt != NULL) {
6449 sf_els_free(fpkt);
6450 }
6451 } else {
6452 mutex_exit(&sf->sf_mutex);
6453 sf_els_free(privp->fpkt);
6454 privp = NULL;
6455 }
6456 } else {
6457 if (sf_core && (sf_core & SF_CORE_ELS_FAILED)) {
6458 sf_token = (int *)(uintptr_t)
6459 fpkt->fcal_socal_request.\
6460 sr_soc_hdr.sh_request_token;
6461 (void) soc_take_core(sf->sf_sochandle, sf->sf_socp);
6462 sf_core = 0;
6463 }
6464 sf_log(sf, CE_NOTE, "%s abort to target 0x%x failed. "
6465 "status=0x%x, forcing LIP\n", what,
6466 sf_alpa_to_switch[privp->dest_nport_id], rval);
6467 privp = NULL;
6468 if (sf->sf_lip_cnt == lip_cnt) {
6469 sf_force_lip(sf);
6470 }
6471 }
6472
6473 mutex_enter(&sf->sf_mutex);
6474 return (privp);
6475 }
6476
6477
6478 /*
6479 * called by timeout when a reset times out
6480 */
6481 /*ARGSUSED*/
6482 static void
6483 sf_check_reset_delay(void *arg)
6484 {
6485 struct sf *sf;
6486 struct sf_target *target;
6487 struct sf_reset_list *rp, *tp;
6488 uint_t lip_cnt, reset_timeout_flag = FALSE;
6489 clock_t lb;
6490
6491 lb = ddi_get_lbolt();
6492
6493 mutex_enter(&sf_global_mutex);
6494
6495 sf_reset_timeout_id = 0;
6496
6497 for (sf = sf_head; sf != NULL; sf = sf->sf_next) {
6498
6499 mutex_exit(&sf_global_mutex);
6500 mutex_enter(&sf->sf_mutex);
6501
6502 /* is this type cast needed? */
6503 tp = (struct sf_reset_list *)&sf->sf_reset_list;
6504
6505 rp = sf->sf_reset_list;
6506 while (rp != NULL) {
6507 if (((rp->timeout - lb) < 0) &&
6508 (rp->lip_cnt == sf->sf_lip_cnt)) {
6509 tp->next = rp->next;
6510 mutex_exit(&sf->sf_mutex);
6511 target = rp->target;
6512 lip_cnt = rp->lip_cnt;
6513 kmem_free(rp, sizeof (struct sf_reset_list));
6514 /* abort all cmds for this target */
6515 while (target) {
6516 sf_abort_all(sf, target, FALSE,
6517 lip_cnt, TRUE);
6518 mutex_enter(&target->sft_mutex);
6519 if (lip_cnt == sf->sf_lip_cnt) {
6520 target->sft_state &=
6521 ~SF_TARGET_BUSY;
6522 }
6523 mutex_exit(&target->sft_mutex);
6524 target = target->sft_next_lun;
6525 }
6526 mutex_enter(&sf->sf_mutex);
6527 tp = (struct sf_reset_list *)
6528 &sf->sf_reset_list;
6529 rp = sf->sf_reset_list;
6530 lb = ddi_get_lbolt();
6531 } else if (rp->lip_cnt != sf->sf_lip_cnt) {
6532 tp->next = rp->next;
6533 kmem_free(rp, sizeof (struct sf_reset_list));
6534 rp = tp->next;
6535 } else {
6536 reset_timeout_flag = TRUE;
6537 tp = rp;
6538 rp = rp->next;
6539 }
6540 }
6541 mutex_exit(&sf->sf_mutex);
6542 mutex_enter(&sf_global_mutex);
6543 }
6544
6545 if (reset_timeout_flag && (sf_reset_timeout_id == 0)) {
6546 sf_reset_timeout_id = timeout(sf_check_reset_delay,
6547 NULL, drv_usectohz(SF_TARGET_RESET_DELAY));
6548 }
6549
6550 mutex_exit(&sf_global_mutex);
6551 }
6552
6553
6554 /*
6555 * called to "reset the bus", i.e. force loop initialization (and address
6556 * re-negotiation)
6557 */
6558 static void
6559 sf_force_lip(struct sf *sf)
6560 {
6561 int i;
6562 struct sf_target *target;
6563
6564
6565 /* disable restart of lip if we're suspended */
6566 mutex_enter(&sf->sf_mutex);
6567 if (sf->sf_state & SF_STATE_SUSPENDED) {
6568 mutex_exit(&sf->sf_mutex);
6569 SF_DEBUG(1, (sf, CE_CONT,
6570 "sf_force_lip, sf%d: lip restart disabled "
6571 "due to DDI_SUSPEND\n",
6572 ddi_get_instance(sf->sf_dip)));
6573 return;
6574 }
6575
6576 sf_log(sf, CE_NOTE, "Forcing lip\n");
6577
6578 for (i = 0; i < sf_max_targets; i++) {
6579 target = sf->sf_targets[i];
6580 while (target != NULL) {
6581 mutex_enter(&target->sft_mutex);
6582 if (!(target->sft_state & SF_TARGET_OFFLINE))
6583 target->sft_state |= SF_TARGET_BUSY;
6584 mutex_exit(&target->sft_mutex);
6585 target = target->sft_next_lun;
6586 }
6587 }
6588
6589 sf->sf_lip_cnt++;
6590 sf->sf_timer = sf_watchdog_time + SF_OFFLINE_TIMEOUT;
6591 sf->sf_state = SF_STATE_OFFLINE;
6592 mutex_exit(&sf->sf_mutex);
6593 sf->sf_stats.lip_count++; /* no mutex for this? */
6594
6595 #ifdef DEBUG
6596 /* are we allowing LIPs ?? */
6597 if (sf_lip_flag != 0) {
6598 #endif
6599 /* call the transport to force loop initialization */
6600 if (((i = soc_force_lip(sf->sf_sochandle, sf->sf_socp,
6601 sf->sf_sochandle->fcal_portno, 1,
6602 FCAL_FORCE_LIP)) != FCAL_SUCCESS) &&
6603 (i != FCAL_TIMEOUT)) {
6604 /* force LIP failed */
6605 if (sf_core && (sf_core & SF_CORE_LIP_FAILED)) {
6606 (void) soc_take_core(sf->sf_sochandle,
6607 sf->sf_socp);
6608 sf_core = 0;
6609 }
6610 #ifdef DEBUG
6611 /* are we allowing reset after LIP failed ?? */
6612 if (sf_reset_flag != 0) {
6613 #endif
6614 /* restart socal after resetting it */
6615 sf_log(sf, CE_NOTE,
6616 "!Force lip failed Status code 0x%x."
6617 " Reseting\n", i);
6618 /* call transport to force a reset */
6619 soc_force_reset(sf->sf_sochandle, sf->sf_socp,
6620 sf->sf_sochandle->fcal_portno, 1);
6621 #ifdef DEBUG
6622 }
6623 #endif
6624 }
6625 #ifdef DEBUG
6626 }
6627 #endif
6628 }
6629
6630
6631 /*
6632 * called by the transport when an unsolicited ELS is received
6633 */
6634 static void
6635 sf_unsol_els_callback(void *arg, soc_response_t *srp, caddr_t payload)
6636 {
6637 struct sf *sf = (struct sf *)arg;
6638 els_payload_t *els = (els_payload_t *)payload;
6639 struct la_els_rjt *rsp;
6640 int i, tgt_id;
6641 uchar_t dest_id;
6642 struct fcal_packet *fpkt;
6643 fc_frame_header_t *hp;
6644 struct sf_els_hdr *privp;
6645
6646
6647 if ((els == NULL) || ((i = srp->sr_soc_hdr.sh_byte_cnt) == 0)) {
6648 return;
6649 }
6650
6651 if (i > SOC_CQE_PAYLOAD) {
6652 i = SOC_CQE_PAYLOAD;
6653 }
6654
6655 dest_id = (uchar_t)srp->sr_fc_frame_hdr.s_id;
6656 tgt_id = sf_alpa_to_switch[dest_id];
6657
6658 switch (els->els_cmd.c.ls_command) {
6659
6660 case LA_ELS_LOGO:
6661 /*
6662 * logout received -- log the fact
6663 */
6664 sf->sf_stats.tstats[tgt_id].logouts_recvd++;
6665 sf_log(sf, CE_NOTE, "!LOGO recvd from target %x, %s\n",
6666 tgt_id,
6667 sf_lip_on_plogo ? "Forcing LIP...." : "");
6668 if (sf_lip_on_plogo) {
6669 sf_force_lip(sf);
6670 }
6671 break;
6672
6673 default: /* includes LA_ELS_PLOGI */
6674 /*
6675 * something besides a logout received -- we don't handle
6676 * this so send back a reject saying its unsupported
6677 */
6678
6679 sf_log(sf, CE_NOTE, "!ELS 0x%x recvd from target 0x%x\n",
6680 els->els_cmd.c.ls_command, tgt_id);
6681
6682
6683 /* allocate room for a response */
6684 if (sf_els_alloc(sf, dest_id, sizeof (struct sf_els_hdr),
6685 sizeof (struct la_els_rjt), sizeof (union sf_els_rsp),
6686 (caddr_t *)&privp, (caddr_t *)&rsp) == NULL) {
6687 break;
6688 }
6689
6690 fpkt = privp->fpkt;
6691
6692 /* fill in pkt header */
6693 hp = &fpkt->fcal_socal_request.sr_fc_frame_hdr;
6694 hp->r_ctl = R_CTL_ELS_RSP;
6695 hp->f_ctl = F_CTL_LAST_SEQ | F_CTL_XCHG_CONTEXT;
6696 hp->ox_id = srp->sr_fc_frame_hdr.ox_id;
6697 hp->rx_id = srp->sr_fc_frame_hdr.rx_id;
6698 fpkt->fcal_socal_request.sr_cqhdr.cq_hdr_type =
6699 CQ_TYPE_OUTBOUND;
6700
6701 fpkt->fcal_socal_request.sr_soc_hdr.sh_seg_cnt = 1;
6702
6703 /* fill in response */
6704 rsp->ls_code = LA_ELS_RJT; /* reject this ELS */
6705 rsp->mbz[0] = 0;
6706 rsp->mbz[1] = 0;
6707 rsp->mbz[2] = 0;
6708 ((struct la_els_logi *)privp->rsp)->ls_code = LA_ELS_ACC;
6709 *((int *)&rsp->reserved) = 0;
6710 rsp->reason_code = RJT_UNSUPPORTED;
6711 privp->retries = sf_els_retries;
6712 privp->els_code = LA_ELS_RJT;
6713 privp->timeout = (unsigned)0xffffffff;
6714 (void) sf_els_transport(sf, privp);
6715 break;
6716 }
6717 }
6718
6719
6720 /*
6721 * Error logging, printing, and debug print routines
6722 */
6723
6724 /*PRINTFLIKE3*/
6725 static void
6726 sf_log(struct sf *sf, int level, const char *fmt, ...)
6727 {
6728 char buf[256];
6729 dev_info_t *dip;
6730 va_list ap;
6731
6732 if (sf != NULL) {
6733 dip = sf->sf_dip;
6734 } else {
6735 dip = NULL;
6736 }
6737
6738 va_start(ap, fmt);
6739 (void) vsprintf(buf, fmt, ap);
6740 va_end(ap);
6741 scsi_log(dip, "sf", level, buf);
6742 }
6743
6744
6745 /*
6746 * called to get some sf kstats -- return 0 on success else return errno
6747 */
6748 static int
6749 sf_kstat_update(kstat_t *ksp, int rw)
6750 {
6751 struct sf *sf;
6752
6753 if (rw == KSTAT_WRITE) {
6754 /* can't write */
6755 return (EACCES);
6756 }
6757
6758 sf = ksp->ks_private;
6759 sf->sf_stats.ncmds = sf->sf_ncmds;
6760 sf->sf_stats.throttle_limit = sf->sf_throttle;
6761 sf->sf_stats.cr_pool_size = sf->sf_cr_pool_cnt;
6762
6763 return (0); /* success */
6764 }
6765
6766
6767 /*
6768 * Unix Entry Points
6769 */
6770
6771 /*
6772 * driver entry point for opens on control device
6773 */
6774 /* ARGSUSED */
6775 static int
6776 sf_open(dev_t *dev_p, int flag, int otyp, cred_t *cred_p)
6777 {
6778 dev_t dev = *dev_p;
6779 struct sf *sf;
6780
6781
6782 /* just ensure soft state exists for this device */
6783 sf = ddi_get_soft_state(sf_state, SF_MINOR2INST(getminor(dev)));
6784 if (sf == NULL) {
6785 return (ENXIO);
6786 }
6787
6788 ++(sf->sf_check_n_close);
6789
6790 return (0);
6791 }
6792
6793
6794 /*
6795 * driver entry point for last close on control device
6796 */
6797 /* ARGSUSED */
6798 static int
6799 sf_close(dev_t dev, int flag, int otyp, cred_t *cred_p)
6800 {
6801 struct sf *sf;
6802
6803 sf = ddi_get_soft_state(sf_state, SF_MINOR2INST(getminor(dev)));
6804 if (sf == NULL) {
6805 return (ENXIO);
6806 }
6807
6808 if (!sf->sf_check_n_close) { /* if this flag is zero */
6809 cmn_err(CE_WARN, "sf%d: trying to close unopened instance",
6810 SF_MINOR2INST(getminor(dev)));
6811 return (ENODEV);
6812 } else {
6813 --(sf->sf_check_n_close);
6814 }
6815 return (0);
6816 }
6817
6818
6819 /*
6820 * driver entry point for sf ioctl commands
6821 */
6822 /* ARGSUSED */
6823 static int
6824 sf_ioctl(dev_t dev,
6825 int cmd, intptr_t arg, int mode, cred_t *cred_p, int *rval_p)
6826 {
6827 struct sf *sf;
6828 struct sf_target *target;
6829 uchar_t al_pa;
6830 struct sf_al_map map;
6831 int cnt, i;
6832 int retval; /* return value */
6833 struct devctl_iocdata *dcp;
6834 dev_info_t *cdip;
6835 struct scsi_address ap;
6836 scsi_hba_tran_t *tran;
6837
6838
6839 sf = ddi_get_soft_state(sf_state, SF_MINOR2INST(getminor(dev)));
6840 if (sf == NULL) {
6841 return (ENXIO);
6842 }
6843
6844 /* handle all ioctls */
6845 switch (cmd) {
6846
6847 /*
6848 * We can use the generic implementation for these ioctls
6849 */
6850 case DEVCTL_DEVICE_GETSTATE:
6851 case DEVCTL_DEVICE_ONLINE:
6852 case DEVCTL_DEVICE_OFFLINE:
6853 case DEVCTL_BUS_GETSTATE:
6854 return (ndi_devctl_ioctl(sf->sf_dip, cmd, arg, mode, 0));
6855
6856 /*
6857 * return FC map
6858 */
6859 case SFIOCGMAP:
6860 if ((sf->sf_lilp_map->lilp_magic != FCAL_LILP_MAGIC &&
6861 sf->sf_lilp_map->lilp_magic != FCAL_BADLILP_MAGIC) ||
6862 sf->sf_state != SF_STATE_ONLINE) {
6863 retval = ENOENT;
6864 goto dun;
6865 }
6866 mutex_enter(&sf->sf_mutex);
6867 if (sf->sf_lilp_map->lilp_magic == FCAL_BADLILP_MAGIC) {
6868 int i, j = 0;
6869
6870 /* Need to generate a fake lilp map */
6871 for (i = 0; i < sf_max_targets; i++) {
6872 if (sf->sf_targets[i])
6873 sf->sf_lilp_map->lilp_alpalist[j++] =
6874 sf->sf_targets[i]->
6875 sft_hard_address;
6876 }
6877 sf->sf_lilp_map->lilp_length = (uchar_t)j;
6878 }
6879 cnt = sf->sf_lilp_map->lilp_length;
6880 map.sf_count = (short)cnt;
6881 bcopy((caddr_t)&sf->sf_sochandle->fcal_n_wwn,
6882 (caddr_t)&map.sf_hba_addr.sf_node_wwn,
6883 sizeof (la_wwn_t));
6884 bcopy((caddr_t)&sf->sf_sochandle->fcal_p_wwn,
6885 (caddr_t)&map.sf_hba_addr.sf_port_wwn,
6886 sizeof (la_wwn_t));
6887 map.sf_hba_addr.sf_al_pa = sf->sf_al_pa;
6888 map.sf_hba_addr.sf_hard_address = 0;
6889 map.sf_hba_addr.sf_inq_dtype = DTYPE_UNKNOWN;
6890 for (i = 0; i < cnt; i++) {
6891 al_pa = sf->sf_lilp_map->lilp_alpalist[i];
6892 map.sf_addr_pair[i].sf_al_pa = al_pa;
6893 if (al_pa == sf->sf_al_pa) {
6894 (void) bcopy((caddr_t)&sf->sf_sochandle
6895 ->fcal_n_wwn, (caddr_t)&map.
6896 sf_addr_pair[i].sf_node_wwn,
6897 sizeof (la_wwn_t));
6898 (void) bcopy((caddr_t)&sf->sf_sochandle
6899 ->fcal_p_wwn, (caddr_t)&map.
6900 sf_addr_pair[i].sf_port_wwn,
6901 sizeof (la_wwn_t));
6902 map.sf_addr_pair[i].sf_hard_address =
6903 al_pa;
6904 map.sf_addr_pair[i].sf_inq_dtype =
6905 DTYPE_PROCESSOR;
6906 continue;
6907 }
6908 target = sf->sf_targets[sf_alpa_to_switch[
6909 al_pa]];
6910 if (target != NULL) {
6911 mutex_enter(&target->sft_mutex);
6912 if (!(target->sft_state &
6913 (SF_TARGET_OFFLINE |
6914 SF_TARGET_BUSY))) {
6915 bcopy((caddr_t)&target->
6916 sft_node_wwn,
6917 (caddr_t)&map.sf_addr_pair
6918 [i].sf_node_wwn,
6919 sizeof (la_wwn_t));
6920 bcopy((caddr_t)&target->
6921 sft_port_wwn,
6922 (caddr_t)&map.sf_addr_pair
6923 [i].sf_port_wwn,
6924 sizeof (la_wwn_t));
6925 map.sf_addr_pair[i].
6926 sf_hard_address
6927 = target->sft_hard_address;
6928 map.sf_addr_pair[i].
6929 sf_inq_dtype
6930 = target->sft_device_type;
6931 mutex_exit(&target->sft_mutex);
6932 continue;
6933 }
6934 mutex_exit(&target->sft_mutex);
6935 }
6936 bzero((caddr_t)&map.sf_addr_pair[i].
6937 sf_node_wwn, sizeof (la_wwn_t));
6938 bzero((caddr_t)&map.sf_addr_pair[i].
6939 sf_port_wwn, sizeof (la_wwn_t));
6940 map.sf_addr_pair[i].sf_inq_dtype =
6941 DTYPE_UNKNOWN;
6942 }
6943 mutex_exit(&sf->sf_mutex);
6944 if (ddi_copyout((caddr_t)&map, (caddr_t)arg,
6945 sizeof (struct sf_al_map), mode) != 0) {
6946 retval = EFAULT;
6947 goto dun;
6948 }
6949 break;
6950
6951 /*
6952 * handle device control ioctls
6953 */
6954 case DEVCTL_DEVICE_RESET:
6955 if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) {
6956 retval = EFAULT;
6957 goto dun;
6958 }
6959 if ((ndi_dc_getname(dcp) == NULL) ||
6960 (ndi_dc_getaddr(dcp) == NULL)) {
6961 ndi_dc_freehdl(dcp);
6962 retval = EINVAL;
6963 goto dun;
6964 }
6965 cdip = ndi_devi_find(sf->sf_dip,
6966 ndi_dc_getname(dcp), ndi_dc_getaddr(dcp));
6967 ndi_dc_freehdl(dcp);
6968
6969 if (cdip == NULL) {
6970 retval = ENXIO;
6971 goto dun;
6972 }
6973
6974 if ((target = sf_get_target_from_dip(sf, cdip)) == NULL) {
6975 retval = ENXIO;
6976 goto dun;
6977 }
6978 mutex_enter(&target->sft_mutex);
6979 if (!(target->sft_state & SF_TARGET_INIT_DONE)) {
6980 mutex_exit(&target->sft_mutex);
6981 retval = ENXIO;
6982 goto dun;
6983 }
6984
6985 /* This is ugly */
6986 tran = kmem_zalloc(scsi_hba_tran_size(), KM_SLEEP);
6987 bcopy(target->sft_tran, tran, scsi_hba_tran_size());
6988 mutex_exit(&target->sft_mutex);
6989 ap.a_hba_tran = tran;
6990 ap.a_target = sf_alpa_to_switch[target->sft_al_pa];
6991 if (sf_reset(&ap, RESET_TARGET) == FALSE) {
6992 retval = EIO;
6993 } else {
6994 retval = 0;
6995 }
6996 kmem_free(tran, scsi_hba_tran_size());
6997 goto dun;
6998
6999 case DEVCTL_BUS_QUIESCE:
7000 case DEVCTL_BUS_UNQUIESCE:
7001 retval = ENOTSUP;
7002 goto dun;
7003
7004 case DEVCTL_BUS_RESET:
7005 case DEVCTL_BUS_RESETALL:
7006 sf_force_lip(sf);
7007 break;
7008
7009 default:
7010 retval = ENOTTY;
7011 goto dun;
7012 }
7013
7014 retval = 0; /* success */
7015
7016 dun:
7017 return (retval);
7018 }
7019
7020
7021 /*
7022 * get the target given a DIP
7023 */
7024 static struct sf_target *
7025 sf_get_target_from_dip(struct sf *sf, dev_info_t *dip)
7026 {
7027 int i;
7028 struct sf_target *target;
7029
7030
7031 /* scan each hash queue for the DIP in question */
7032 for (i = 0; i < SF_NUM_HASH_QUEUES; i++) {
7033 target = sf->sf_wwn_lists[i];
7034 while (target != NULL) {
7035 if (target->sft_dip == dip) {
7036 return (target); /* success: target found */
7037 }
7038 target = target->sft_next;
7039 }
7040 }
7041 return (NULL); /* failure: target not found */
7042 }
7043
7044
7045 /*
7046 * called by the transport to get an event cookie
7047 */
7048 static int
7049 sf_bus_get_eventcookie(dev_info_t *dip, dev_info_t *rdip, char *name,
7050 ddi_eventcookie_t *event_cookiep)
7051 {
7052 struct sf *sf;
7053
7054 sf = ddi_get_soft_state(sf_state, ddi_get_instance(dip));
7055 if (sf == NULL) {
7056 /* can't find instance for this device */
7057 return (DDI_FAILURE);
7058 }
7059
7060 return (ndi_event_retrieve_cookie(sf->sf_event_hdl, rdip, name,
7061 event_cookiep, NDI_EVENT_NOPASS));
7062
7063 }
7064
7065
7066 /*
7067 * called by the transport to add an event callback
7068 */
7069 static int
7070 sf_bus_add_eventcall(dev_info_t *dip, dev_info_t *rdip,
7071 ddi_eventcookie_t eventid, void (*callback)(dev_info_t *dip,
7072 ddi_eventcookie_t event, void *arg, void *impl_data), void *arg,
7073 ddi_callback_id_t *cb_id)
7074 {
7075 struct sf *sf;
7076
7077 sf = ddi_get_soft_state(sf_state, ddi_get_instance(dip));
7078 if (sf == NULL) {
7079 /* can't find instance for this device */
7080 return (DDI_FAILURE);
7081 }
7082
7083 return (ndi_event_add_callback(sf->sf_event_hdl, rdip,
7084 eventid, callback, arg, NDI_SLEEP, cb_id));
7085
7086 }
7087
7088
7089 /*
7090 * called by the transport to remove an event callback
7091 */
7092 static int
7093 sf_bus_remove_eventcall(dev_info_t *devi, ddi_callback_id_t cb_id)
7094 {
7095 struct sf *sf;
7096
7097 sf = ddi_get_soft_state(sf_state, ddi_get_instance(devi));
7098 if (sf == NULL) {
7099 /* can't find instance for this device */
7100 return (DDI_FAILURE);
7101 }
7102
7103 return (ndi_event_remove_callback(sf->sf_event_hdl, cb_id));
7104 }
7105
7106
7107 /*
7108 * called by the transport to post an event
7109 */
7110 static int
7111 sf_bus_post_event(dev_info_t *dip, dev_info_t *rdip,
7112 ddi_eventcookie_t eventid, void *impldata)
7113 {
7114 ddi_eventcookie_t remove_cookie, cookie;
7115
7116 /* is this a remove event ?? */
7117 struct sf *sf = ddi_get_soft_state(sf_state, ddi_get_instance(dip));
7118 remove_cookie = ndi_event_tag_to_cookie(sf->sf_event_hdl,
7119 SF_EVENT_TAG_REMOVE);
7120
7121 if (remove_cookie == eventid) {
7122 struct sf_target *target;
7123
7124 /* handle remove event */
7125
7126 if (sf == NULL) {
7127 /* no sf instance for this device */
7128 return (NDI_FAILURE);
7129 }
7130
7131 /* get the target for this event */
7132 if ((target = sf_get_target_from_dip(sf, rdip)) != NULL) {
7133 /*
7134 * clear device info for this target and mark as
7135 * not done
7136 */
7137 mutex_enter(&target->sft_mutex);
7138 target->sft_dip = NULL;
7139 target->sft_state &= ~SF_TARGET_INIT_DONE;
7140 mutex_exit(&target->sft_mutex);
7141 return (NDI_SUCCESS); /* event handled */
7142 }
7143
7144 /* no target for this event */
7145 return (NDI_FAILURE);
7146 }
7147
7148 /* an insertion event */
7149 if (ndi_busop_get_eventcookie(dip, rdip, FCAL_INSERT_EVENT, &cookie)
7150 != NDI_SUCCESS) {
7151 return (NDI_FAILURE);
7152 }
7153
7154 return (ndi_post_event(dip, rdip, cookie, impldata));
7155 }
7156
7157
7158 /*
7159 * the sf hotplug daemon, one thread per sf instance
7160 */
7161 static void
7162 sf_hp_daemon(void *arg)
7163 {
7164 struct sf *sf = (struct sf *)arg;
7165 struct sf_hp_elem *elem;
7166 struct sf_target *target;
7167 int tgt_id;
7168 callb_cpr_t cprinfo;
7169
7170 CALLB_CPR_INIT(&cprinfo, &sf->sf_hp_daemon_mutex,
7171 callb_generic_cpr, "sf_hp_daemon");
7172
7173 mutex_enter(&sf->sf_hp_daemon_mutex);
7174
7175 do {
7176 while (sf->sf_hp_elem_head != NULL) {
7177
7178 /* save ptr to head of list */
7179 elem = sf->sf_hp_elem_head;
7180
7181 /* take element off of list */
7182 if (sf->sf_hp_elem_head == sf->sf_hp_elem_tail) {
7183 /* element only one in list -- list now empty */
7184 sf->sf_hp_elem_head = NULL;
7185 sf->sf_hp_elem_tail = NULL;
7186 } else {
7187 /* remove element from head of list */
7188 sf->sf_hp_elem_head = sf->sf_hp_elem_head->next;
7189 }
7190
7191 mutex_exit(&sf->sf_hp_daemon_mutex);
7192
7193 switch (elem->what) {
7194 case SF_ONLINE:
7195 /* online this target */
7196 target = elem->target;
7197 (void) ndi_devi_online(elem->dip, 0);
7198 (void) ndi_event_retrieve_cookie(
7199 sf->sf_event_hdl,
7200 target->sft_dip, FCAL_INSERT_EVENT,
7201 &sf_insert_eid, NDI_EVENT_NOPASS);
7202 (void) ndi_event_run_callbacks(sf->sf_event_hdl,
7203 target->sft_dip, sf_insert_eid, NULL);
7204 break;
7205 case SF_OFFLINE:
7206 /* offline this target */
7207 target = elem->target;
7208 tgt_id = sf_alpa_to_switch[target->sft_al_pa];
7209 /* don't do NDI_DEVI_REMOVE for now */
7210 if (ndi_devi_offline(elem->dip, 0) !=
7211 NDI_SUCCESS) {
7212 SF_DEBUG(1, (sf, CE_WARN, "target %x, "
7213 "device offline failed", tgt_id));
7214 } else {
7215 SF_DEBUG(1, (sf, CE_NOTE, "target %x, "
7216 "device offline succeeded\n",
7217 tgt_id));
7218 }
7219 break;
7220 }
7221 kmem_free(elem, sizeof (struct sf_hp_elem));
7222 mutex_enter(&sf->sf_hp_daemon_mutex);
7223 }
7224
7225 /* if exit is not already signaled */
7226 if (sf->sf_hp_exit == 0) {
7227 /* wait to be signaled by work or exit */
7228 CALLB_CPR_SAFE_BEGIN(&cprinfo);
7229 cv_wait(&sf->sf_hp_daemon_cv, &sf->sf_hp_daemon_mutex);
7230 CALLB_CPR_SAFE_END(&cprinfo, &sf->sf_hp_daemon_mutex);
7231 }
7232 } while (sf->sf_hp_exit == 0);
7233
7234 /* sf_hp_daemon_mutex is dropped by CALLB_CPR_EXIT */
7235 CALLB_CPR_EXIT(&cprinfo);
7236 thread_exit(); /* no more hotplug thread */
7237 /* NOTREACHED */
7238 }
7239