1 /*-
2 * Copyright (c) 2001 Michael Smith
3 * Copyright (c) 2004 Paul Saab
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: src/sys/dev/ciss/ciss.c,v 1.113 2012/03/12 08:03:51 scottl Exp $
28 */
29
30 /*
31 * Common Interface for SCSI-3 Support driver.
32 *
33 * CISS claims to provide a common interface between a generic SCSI
34 * transport and an intelligent host adapter.
35 *
36 * This driver supports CISS as defined in the document "CISS Command
37 * Interface for SCSI-3 Support Open Specification", Version 1.04,
38 * Valence Number 1, dated 20001127, produced by Compaq Computer
39 * Corporation. This document appears to be a hastily and somewhat
40 * arbitrarlily cut-down version of a larger (and probably even more
41 * chaotic and inconsistent) Compaq internal document. Various
42 * details were also gleaned from Compaq's "cciss" driver for Linux.
43 *
44 * We provide a shim layer between the CISS interface and CAM,
45 * offloading most of the queueing and being-a-disk chores onto CAM.
46 * Entry to the driver is via the PCI bus attachment (ciss_probe,
47 * ciss_attach, etc) and via the CAM interface (ciss_cam_action,
48 * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI
49 * citizens and we have to fake up some responses to get reasonable
50 * behaviour out of them. In addition, the CISS command set is by no
51 * means adequate to support the functionality of a RAID controller,
52 * and thus the supported Compaq adapters utilise portions of the
53 * control protocol from earlier Compaq adapter families.
54 *
55 * Note that we only support the "simple" transport layer over PCI.
56 * This interface (ab)uses the I2O register set (specifically the post
57 * queues) to exchange commands with the adapter. Other interfaces
58 * are available, but we aren't supposed to know about them, and it is
59 * dubious whether they would provide major performance improvements
60 * except under extreme load.
61 *
62 * Currently the only supported CISS adapters are the Compaq Smart
63 * Array 5* series (5300, 5i, 532). Even with only three adapters,
64 * Compaq still manage to have interface variations.
65 *
66 *
67 * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as
68 * well as Paul Saab at Yahoo! for their assistance in making this
69 * driver happen.
70 *
71 * More thanks must go to John Cagle at HP for the countless hours
72 * spent making this driver "work" with the MSA* series storage
73 * enclosures. Without his help (and nagging), this driver could not
74 * be used with these enclosures.
75 */
76
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/malloc.h>
80 #include <sys/kernel.h>
81 #include <sys/bus.h>
82 #include <sys/conf.h>
83 #include <sys/stat.h>
84 #include <sys/kthread.h>
85 #include <sys/queue.h>
86 #include <sys/sysctl.h>
87 #include <sys/device.h>
88
89 #include <bus/cam/cam.h>
90 #include <bus/cam/cam_ccb.h>
91 #include <bus/cam/cam_periph.h>
92 #include <bus/cam/cam_sim.h>
93 #include <bus/cam/cam_xpt_sim.h>
94 #include <bus/cam/scsi/scsi_all.h>
95 #include <bus/cam/scsi/scsi_message.h>
96 #include <bus/cam/cam_xpt_periph.h>
97
98 #include <machine/endian.h>
99 #include <sys/rman.h>
100
101 #include <bus/pci/pcireg.h>
102 #include <bus/pci/pcivar.h>
103
104 #include <dev/raid/ciss/cissreg.h>
105 #include <dev/raid/ciss/cissio.h>
106 #include <dev/raid/ciss/cissvar.h>
107
108 static MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data",
109 "ciss internal data buffers");
110
111 /* pci interface */
112 static int ciss_lookup(device_t dev);
113 static int ciss_probe(device_t dev);
114 static int ciss_attach(device_t dev);
115 static int ciss_detach(device_t dev);
116 static int ciss_shutdown(device_t dev);
117
118 /* (de)initialisation functions, control wrappers */
119 static int ciss_init_pci(struct ciss_softc *sc);
120 static int ciss_setup_msix(struct ciss_softc *sc);
121 static int ciss_init_perf(struct ciss_softc *sc);
122 static int ciss_wait_adapter(struct ciss_softc *sc);
123 static int ciss_flush_adapter(struct ciss_softc *sc);
124 static int ciss_init_requests(struct ciss_softc *sc);
125 static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs,
126 int nseg, int error);
127 static int ciss_identify_adapter(struct ciss_softc *sc);
128 static int ciss_init_logical(struct ciss_softc *sc);
129 static int ciss_init_physical(struct ciss_softc *sc);
130 static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll);
131 static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld);
132 static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld);
133 static int ciss_update_config(struct ciss_softc *sc);
134 static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld);
135 static void ciss_init_sysctl(struct ciss_softc *sc);
136 static void ciss_soft_reset(struct ciss_softc *sc);
137 static void ciss_free(struct ciss_softc *sc);
138 static void ciss_spawn_notify_thread(struct ciss_softc *sc);
139 static void ciss_kill_notify_thread(struct ciss_softc *sc);
140
141 /* request submission/completion */
142 static int ciss_start(struct ciss_request *cr);
143 static void ciss_done(struct ciss_softc *sc, cr_qhead_t *qh);
144 static void ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh);
145 static void ciss_intr(void *arg);
146 static void ciss_perf_intr(void *arg);
147 static void ciss_perf_msi_intr(void *arg);
148 static void ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh);
149 static int _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func);
150 static int ciss_synch_request(struct ciss_request *cr, int timeout);
151 static int ciss_poll_request(struct ciss_request *cr, int timeout);
152 static int ciss_wait_request(struct ciss_request *cr, int timeout);
153 #if 0
154 static int ciss_abort_request(struct ciss_request *cr);
155 #endif
156
157 /* request queueing */
158 static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp);
159 static void ciss_preen_command(struct ciss_request *cr);
160 static void ciss_release_request(struct ciss_request *cr);
161
162 /* request helpers */
163 static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
164 int opcode, void **bufp, size_t bufsize);
165 static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc);
166
167 /* DMA map/unmap */
168 static int ciss_map_request(struct ciss_request *cr);
169 static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs,
170 int nseg, int error);
171 static void ciss_unmap_request(struct ciss_request *cr);
172
173 /* CAM interface */
174 static int ciss_cam_init(struct ciss_softc *sc);
175 static void ciss_cam_rescan_target(struct ciss_softc *sc,
176 int bus, int target);
177 static void ciss_cam_rescan_all(struct ciss_softc *sc);
178 static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb);
179 static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb);
180 static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
181 static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio);
182 static void ciss_cam_poll(struct cam_sim *sim);
183 static void ciss_cam_complete(struct ciss_request *cr);
184 static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio);
185 static struct cam_periph *ciss_find_periph(struct ciss_softc *sc,
186 int bus, int target);
187 static int ciss_name_device(struct ciss_softc *sc, int bus, int target);
188
189 /* periodic status monitoring */
190 static void ciss_periodic(void *arg);
191 static void ciss_nop_complete(struct ciss_request *cr);
192 static void ciss_disable_adapter(struct ciss_softc *sc);
193 static void ciss_notify_event(struct ciss_softc *sc);
194 static void ciss_notify_complete(struct ciss_request *cr);
195 static int ciss_notify_abort(struct ciss_softc *sc);
196 static int ciss_notify_abort_bmic(struct ciss_softc *sc);
197 static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn);
198 static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn);
199 static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn);
200
201 /* debugging output */
202 static void ciss_print_request(struct ciss_request *cr);
203 static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld);
204 static const char *ciss_name_ldrive_status(int status);
205 static int ciss_decode_ldrive_status(int status);
206 static const char *ciss_name_ldrive_org(int org);
207 static const char *ciss_name_command_status(int status);
208
209 /*
210 * PCI bus interface.
211 */
212 static device_method_t ciss_methods[] = {
213 /* Device interface */
214 DEVMETHOD(device_probe, ciss_probe),
215 DEVMETHOD(device_attach, ciss_attach),
216 DEVMETHOD(device_detach, ciss_detach),
217 DEVMETHOD(device_shutdown, ciss_shutdown),
218 DEVMETHOD_END
219 };
220
221 static driver_t ciss_pci_driver = {
222 "ciss",
223 ciss_methods,
224 sizeof(struct ciss_softc)
225 };
226
227 static devclass_t ciss_devclass;
228 DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, NULL, NULL);
229 MODULE_VERSION(ciss, 1);
230 MODULE_DEPEND(ciss, cam, 1, 1, 1);
231 MODULE_DEPEND(ciss, pci, 1, 1, 1);
232
233 /*
234 * Control device interface.
235 */
236 static d_open_t ciss_open;
237 static d_close_t ciss_close;
238 static d_ioctl_t ciss_ioctl;
239
240 static struct dev_ops ciss_ops = {
241 { "ciss", 0, D_MPSAFE },
242 .d_open = ciss_open,
243 .d_close = ciss_close,
244 .d_ioctl = ciss_ioctl,
245 };
246
247 /*
248 * This tunable can be set at boot time and controls whether physical devices
249 * that are marked hidden by the firmware should be exposed anyways.
250 */
251 static unsigned int ciss_expose_hidden_physical = 0;
252 TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical);
253
254 static unsigned int ciss_nop_message_heartbeat = 0;
255 TUNABLE_INT("hw.ciss.nop_message_heartbeat", &ciss_nop_message_heartbeat);
256
257 /*
258 * This tunable can force a particular transport to be used:
259 * <= 0 : use default
260 * 1 : force simple
261 * 2 : force performant
262 */
263 static int ciss_force_transport = 0;
264 TUNABLE_INT("hw.ciss.force_transport", &ciss_force_transport);
265
266 /*
267 * This tunable can force a particular interrupt delivery method to be used:
268 * <= 0 : use default
269 * 1 : force INTx
270 * 2 : force MSIX
271 */
272 static int ciss_force_interrupt = 0;
273 TUNABLE_INT("hw.ciss.force_interrupt", &ciss_force_interrupt);
274
275 /************************************************************************
276 * CISS adapters amazingly don't have a defined programming interface
277 * value. (One could say some very despairing things about PCI and
278 * people just not getting the general idea.) So we are forced to
279 * stick with matching against subvendor/subdevice, and thus have to
280 * be updated for every new CISS adapter that appears.
281 */
282 #define CISS_BOARD_UNKNWON 0
283 #define CISS_BOARD_SA5 1
284 #define CISS_BOARD_SA5B 2
285 #define CISS_BOARD_NOMSI (1<<4)
286
287 static struct
288 {
289 u_int16_t subvendor;
290 u_int16_t subdevice;
291 int flags;
292 char *desc;
293 } ciss_vendor_data[] = {
294 { 0x0e11, 0x4070, CISS_BOARD_SA5|CISS_BOARD_NOMSI, "Compaq Smart Array 5300" },
295 { 0x0e11, 0x4080, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 5i" },
296 { 0x0e11, 0x4082, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 532" },
297 { 0x0e11, 0x4083, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "HP Smart Array 5312" },
298 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" },
299 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" },
300 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" },
301 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" },
302 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" },
303 { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" },
304 { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" },
305 { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" },
306 { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" },
307 { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" },
308 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" },
309 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" },
310 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" },
311 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" },
312 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" },
313 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" },
314 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" },
315 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" },
316 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" },
317 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" },
318 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" },
319 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array E500" },
320 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" },
321 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" },
322 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" },
323 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" },
324 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" },
325 { 0x103C, 0x323D, CISS_BOARD_SA5, "HP Smart Array P700m" },
326 { 0x103C, 0x3241, CISS_BOARD_SA5, "HP Smart Array P212" },
327 { 0x103C, 0x3243, CISS_BOARD_SA5, "HP Smart Array P410" },
328 { 0x103C, 0x3245, CISS_BOARD_SA5, "HP Smart Array P410i" },
329 { 0x103C, 0x3247, CISS_BOARD_SA5, "HP Smart Array P411" },
330 { 0x103C, 0x3249, CISS_BOARD_SA5, "HP Smart Array P812" },
331 { 0x103C, 0x324A, CISS_BOARD_SA5, "HP Smart Array P712m" },
332 { 0x103C, 0x324B, CISS_BOARD_SA5, "HP Smart Array" },
333 { 0x103C, 0x3350, CISS_BOARD_SA5, "HP Smart Array P222" },
334 { 0x103C, 0x3351, CISS_BOARD_SA5, "HP Smart Array P420" },
335 { 0x103C, 0x3352, CISS_BOARD_SA5, "HP Smart Array P421" },
336 { 0x103C, 0x3353, CISS_BOARD_SA5, "HP Smart Array P822" },
337 { 0x103C, 0x3354, CISS_BOARD_SA5, "HP Smart Array P420i" },
338 { 0x103C, 0x3355, CISS_BOARD_SA5, "HP Smart Array P220i" },
339 { 0x103C, 0x3356, CISS_BOARD_SA5, "HP Smart Array P721m" },
340 { 0, 0, 0, NULL }
341 };
342
343 /************************************************************************
344 * Find a match for the device in our list of known adapters.
345 */
346 static int
ciss_lookup(device_t dev)347 ciss_lookup(device_t dev)
348 {
349 int i;
350
351 for (i = 0; ciss_vendor_data[i].desc != NULL; i++)
352 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) &&
353 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) {
354 return(i);
355 }
356 return(-1);
357 }
358
359 /************************************************************************
360 * Match a known CISS adapter.
361 */
362 static int
ciss_probe(device_t dev)363 ciss_probe(device_t dev)
364 {
365 int i;
366
367 i = ciss_lookup(dev);
368 if (i != -1) {
369 device_set_desc(dev, ciss_vendor_data[i].desc);
370 return(BUS_PROBE_DEFAULT);
371 }
372 return(ENOENT);
373 }
374
375 /************************************************************************
376 * Attach the driver to this adapter.
377 */
378 static int
ciss_attach(device_t dev)379 ciss_attach(device_t dev)
380 {
381 struct ciss_softc *sc;
382 int error;
383
384 debug_called(1);
385
386 #ifdef CISS_DEBUG
387 /* print structure/union sizes */
388 debug_struct(ciss_command);
389 debug_struct(ciss_header);
390 debug_union(ciss_device_address);
391 debug_struct(ciss_cdb);
392 debug_struct(ciss_report_cdb);
393 debug_struct(ciss_notify_cdb);
394 debug_struct(ciss_notify);
395 debug_struct(ciss_message_cdb);
396 debug_struct(ciss_error_info_pointer);
397 debug_struct(ciss_error_info);
398 debug_struct(ciss_sg_entry);
399 debug_struct(ciss_config_table);
400 debug_struct(ciss_bmic_cdb);
401 debug_struct(ciss_bmic_id_ldrive);
402 debug_struct(ciss_bmic_id_lstatus);
403 debug_struct(ciss_bmic_id_table);
404 debug_struct(ciss_bmic_id_pdrive);
405 debug_struct(ciss_bmic_blink_pdrive);
406 debug_struct(ciss_bmic_flush_cache);
407 debug_const(CISS_MAX_REQUESTS);
408 debug_const(CISS_MAX_LOGICAL);
409 debug_const(CISS_INTERRUPT_COALESCE_DELAY);
410 debug_const(CISS_INTERRUPT_COALESCE_COUNT);
411 debug_const(CISS_COMMAND_ALLOC_SIZE);
412 debug_const(CISS_COMMAND_SG_LENGTH);
413
414 debug_type(cciss_pci_info_struct);
415 debug_type(cciss_coalint_struct);
416 debug_type(cciss_coalint_struct);
417 debug_type(NodeName_type);
418 debug_type(NodeName_type);
419 debug_type(Heartbeat_type);
420 debug_type(BusTypes_type);
421 debug_type(FirmwareVer_type);
422 debug_type(DriverVer_type);
423 debug_type(IOCTL_Command_struct);
424 #endif
425
426 sc = device_get_softc(dev);
427 sc->ciss_dev = dev;
428 lockinit(&sc->ciss_lock, "cissmtx", 0, LK_CANRECURSE);
429 callout_init_mp(&sc->ciss_periodic);
430
431 /*
432 * Do PCI-specific init.
433 */
434 if ((error = ciss_init_pci(sc)) != 0)
435 goto out;
436
437 /*
438 * Initialise driver queues.
439 */
440 ciss_initq_free(sc);
441 ciss_initq_notify(sc);
442
443 /*
444 * Initalize device sysctls.
445 */
446 ciss_init_sysctl(sc);
447
448 /*
449 * Initialise command/request pool.
450 */
451 if ((error = ciss_init_requests(sc)) != 0)
452 goto out;
453
454 /*
455 * Get adapter information.
456 */
457 if ((error = ciss_identify_adapter(sc)) != 0)
458 goto out;
459
460 /*
461 * Find all the physical devices.
462 */
463 if ((error = ciss_init_physical(sc)) != 0)
464 goto out;
465
466 /*
467 * Build our private table of logical devices.
468 */
469 if ((error = ciss_init_logical(sc)) != 0)
470 goto out;
471
472 /*
473 * Enable interrupts so that the CAM scan can complete.
474 */
475 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc);
476
477 /*
478 * Initialise the CAM interface.
479 */
480 if ((error = ciss_cam_init(sc)) != 0)
481 goto out;
482
483 /*
484 * Start the heartbeat routine and event chain.
485 */
486 ciss_periodic(sc);
487
488 /*
489 * Create the control device.
490 */
491 sc->ciss_dev_t = make_dev(&ciss_ops, device_get_unit(sc->ciss_dev),
492 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
493 "ciss%d", device_get_unit(sc->ciss_dev));
494 sc->ciss_dev_t->si_drv1 = sc;
495
496 /*
497 * The adapter is running; synchronous commands can now sleep
498 * waiting for an interrupt to signal completion.
499 */
500 sc->ciss_flags |= CISS_FLAG_RUNNING;
501
502 ciss_spawn_notify_thread(sc);
503
504 error = 0;
505 out:
506 if (error != 0) {
507 /* ciss_free() expects the mutex to be held */
508 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
509 ciss_free(sc);
510 }
511 return(error);
512 }
513
514 /************************************************************************
515 * Detach the driver from this adapter.
516 */
517 static int
ciss_detach(device_t dev)518 ciss_detach(device_t dev)
519 {
520 struct ciss_softc *sc = device_get_softc(dev);
521
522 debug_called(1);
523
524 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
525 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) {
526 lockmgr(&sc->ciss_lock, LK_RELEASE);
527 return (EBUSY);
528 }
529
530 /* flush adapter cache */
531 ciss_flush_adapter(sc);
532
533 /* release all resources. The mutex is released and freed here too. */
534 ciss_free(sc);
535
536 return(0);
537 }
538
539 /************************************************************************
540 * Prepare adapter for system shutdown.
541 */
542 static int
ciss_shutdown(device_t dev)543 ciss_shutdown(device_t dev)
544 {
545 struct ciss_softc *sc = device_get_softc(dev);
546
547 debug_called(1);
548
549 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
550 /* flush adapter cache */
551 ciss_flush_adapter(sc);
552
553 if (sc->ciss_soft_reset)
554 ciss_soft_reset(sc);
555 lockmgr(&sc->ciss_lock, LK_RELEASE);
556
557 return(0);
558 }
559
560 static void
ciss_init_sysctl(struct ciss_softc * sc)561 ciss_init_sysctl(struct ciss_softc *sc)
562 {
563 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev),
564 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)),
565 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, "");
566 }
567
568 /************************************************************************
569 * Perform PCI-specific attachment actions.
570 */
571 static int
ciss_init_pci(struct ciss_softc * sc)572 ciss_init_pci(struct ciss_softc *sc)
573 {
574 uintptr_t cbase, csize, cofs;
575 uint32_t method, supported_methods;
576 int error, sqmask, i;
577 void *intr;
578 int use_msi;
579 u_int irq_flags;
580
581 debug_called(1);
582
583 /*
584 * Work out adapter type.
585 */
586 i = ciss_lookup(sc->ciss_dev);
587 if (i < 0) {
588 ciss_printf(sc, "unknown adapter type\n");
589 return (ENXIO);
590 }
591
592 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) {
593 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5;
594 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) {
595 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5B;
596 } else {
597 /*
598 * XXX Big hammer, masks/unmasks all possible interrupts. This should
599 * work on all hardware variants. Need to add code to handle the
600 * "controller crashed" interupt bit that this unmasks.
601 */
602 sqmask = ~0;
603 }
604
605 /*
606 * Allocate register window first (we need this to find the config
607 * struct).
608 */
609 error = ENXIO;
610 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS;
611 if ((sc->ciss_regs_resource =
612 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
613 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) {
614 ciss_printf(sc, "can't allocate register window\n");
615 return(ENXIO);
616 }
617 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource);
618 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource);
619
620 /*
621 * Find the BAR holding the config structure. If it's not the one
622 * we already mapped for registers, map it too.
623 */
624 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff;
625 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) {
626 if ((sc->ciss_cfg_resource =
627 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
628 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) {
629 ciss_printf(sc, "can't allocate config window\n");
630 return(ENXIO);
631 }
632 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource);
633 csize = rman_get_end(sc->ciss_cfg_resource) -
634 rman_get_start(sc->ciss_cfg_resource) + 1;
635 } else {
636 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource);
637 csize = rman_get_end(sc->ciss_regs_resource) -
638 rman_get_start(sc->ciss_regs_resource) + 1;
639 }
640 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF);
641
642 /*
643 * Use the base/size/offset values we just calculated to
644 * sanity-check the config structure. If it's OK, point to it.
645 */
646 if ((cofs + sizeof(struct ciss_config_table)) > csize) {
647 ciss_printf(sc, "config table outside window\n");
648 return(ENXIO);
649 }
650 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs);
651 debug(1, "config struct at %p", sc->ciss_cfg);
652
653 /*
654 * Calculate the number of request structures/commands we are
655 * going to provide for this adapter.
656 */
657 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands);
658
659 /*
660 * Validate the config structure. If we supported other transport
661 * methods, we could select amongst them at this point in time.
662 */
663 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) {
664 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n",
665 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1],
666 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]);
667 return(ENXIO);
668 }
669
670 /*
671 * Select the mode of operation, prefer Performant.
672 */
673 if (!(sc->ciss_cfg->supported_methods &
674 (CISS_TRANSPORT_METHOD_SIMPLE | CISS_TRANSPORT_METHOD_PERF))) {
675 ciss_printf(sc, "No supported transport layers: 0x%x\n",
676 sc->ciss_cfg->supported_methods);
677 }
678
679 switch (ciss_force_transport) {
680 case 1:
681 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
682 break;
683 case 2:
684 supported_methods = CISS_TRANSPORT_METHOD_PERF;
685 break;
686 default:
687 supported_methods = sc->ciss_cfg->supported_methods;
688 break;
689 }
690
691 setup:
692 if ((supported_methods & CISS_TRANSPORT_METHOD_PERF) != 0) {
693 method = CISS_TRANSPORT_METHOD_PERF;
694 sc->ciss_perf = (struct ciss_perf_config *)(cbase + cofs +
695 sc->ciss_cfg->transport_offset);
696 if (ciss_init_perf(sc)) {
697 supported_methods &= ~method;
698 goto setup;
699 }
700 } else if (supported_methods & CISS_TRANSPORT_METHOD_SIMPLE) {
701 method = CISS_TRANSPORT_METHOD_SIMPLE;
702 } else {
703 ciss_printf(sc, "No supported transport methods: 0x%x\n",
704 sc->ciss_cfg->supported_methods);
705 return(ENXIO);
706 }
707
708 /*
709 * Tell it we're using the low 4GB of RAM. Set the default interrupt
710 * coalescing options.
711 */
712 sc->ciss_cfg->requested_method = method;
713 sc->ciss_cfg->command_physlimit = 0;
714 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY;
715 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT;
716
717 if (ciss_update_config(sc)) {
718 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n",
719 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR));
720 return(ENXIO);
721 }
722 if ((sc->ciss_cfg->active_method & method) == 0) {
723 supported_methods &= ~method;
724 if (supported_methods == 0) {
725 ciss_printf(sc, "adapter refuses to go into available transports "
726 "mode (0x%x, 0x%x)\n", supported_methods,
727 sc->ciss_cfg->active_method);
728 return(ENXIO);
729 } else
730 goto setup;
731 }
732
733 /*
734 * Wait for the adapter to come ready.
735 */
736 if ((error = ciss_wait_adapter(sc)) != 0)
737 return(error);
738
739 /* Prepare to possibly use MSIX and/or PERFORMANT interrupts. Normal
740 * interrupts have a rid of 0, this will be overridden if MSIX is used.
741 */
742 sc->ciss_irq_rid[0] = 0;
743 if (method == CISS_TRANSPORT_METHOD_PERF) {
744 ciss_printf(sc, "PERFORMANT Transport\n");
745 if ((ciss_force_interrupt != 1) && (ciss_setup_msix(sc) == 0)) {
746 intr = ciss_perf_msi_intr;
747 } else {
748 intr = ciss_perf_intr;
749 }
750 /* XXX The docs say that the 0x01 bit is only for SAS controllers.
751 * Unfortunately, there is no good way to know if this is a SAS
752 * controller. Hopefully enabling this bit universally will work OK.
753 * It seems to work fine for SA6i controllers.
754 */
755 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_OPQ | CISS_TL_PERF_INTR_MSI;
756
757 } else {
758 ciss_printf(sc, "SIMPLE Transport\n");
759 /* MSIX doesn't seem to work in SIMPLE mode, only enable if it forced */
760 if (ciss_force_interrupt == 2)
761 /* If this fails, we automatically revert to INTx */
762 ciss_setup_msix(sc);
763 sc->ciss_perf = NULL;
764 intr = ciss_intr;
765 sc->ciss_interrupt_mask = sqmask;
766 }
767 /*
768 * Turn off interrupts before we go routing anything.
769 */
770 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
771
772 /*
773 * Allocate and set up our interrupt.
774 */
775 #ifdef __DragonFly__ /* DragonFly specific MSI setup */
776 use_msi = (intr == ciss_perf_msi_intr);
777 #endif
778 sc->ciss_irq_rid[0] = 0;
779 sc->ciss_irq_type = pci_alloc_1intr(sc->ciss_dev, use_msi,
780 &sc->ciss_irq_rid[0], &irq_flags);
781 if ((sc->ciss_irq_resource =
782 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid[0],
783 irq_flags)) == NULL) {
784 ciss_printf(sc, "can't allocate interrupt\n");
785 return(ENXIO);
786 }
787
788 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource,
789 INTR_MPSAFE, intr, sc,
790 &sc->ciss_intr, NULL)) {
791 ciss_printf(sc, "can't set up interrupt\n");
792 return(ENXIO);
793 }
794
795 /*
796 * Allocate the parent bus DMA tag appropriate for our PCI
797 * interface.
798 *
799 * Note that "simple" adapters can only address within a 32-bit
800 * span.
801 */
802 if (bus_dma_tag_create(NULL, /* PCI parent */
803 1, 0, /* alignment, boundary */
804 BUS_SPACE_MAXADDR, /* lowaddr */
805 BUS_SPACE_MAXADDR, /* highaddr */
806 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
807 CISS_MAX_SG_ELEMENTS, /* nsegments */
808 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
809 0, /* flags */
810 &sc->ciss_parent_dmat)) {
811 ciss_printf(sc, "can't allocate parent DMA tag\n");
812 return(ENOMEM);
813 }
814
815 /*
816 * Create DMA tag for mapping buffers into adapter-addressable
817 * space.
818 */
819 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
820 1, 0, /* alignment, boundary */
821 BUS_SPACE_MAXADDR, /* lowaddr */
822 BUS_SPACE_MAXADDR, /* highaddr */
823 MAXBSIZE, CISS_MAX_SG_ELEMENTS, /* maxsize, nsegments */
824 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
825 BUS_DMA_ALLOCNOW, /* flags */
826 &sc->ciss_buffer_dmat)) {
827 ciss_printf(sc, "can't allocate buffer DMA tag\n");
828 return(ENOMEM);
829 }
830 return(0);
831 }
832
833 /************************************************************************
834 * Setup MSI/MSIX operation (Performant only)
835 * Four interrupts are available, but we only use 1 right now. If MSI-X
836 * isn't avaialble, try using MSI instead.
837 */
838 static int
ciss_setup_msix(struct ciss_softc * sc)839 ciss_setup_msix(struct ciss_softc *sc)
840 {
841 int val, i;
842
843 /* Weed out devices that don't actually support MSI */
844 i = ciss_lookup(sc->ciss_dev);
845 if (ciss_vendor_data[i].flags & CISS_BOARD_NOMSI)
846 return (EINVAL);
847
848 #if 0 /* XXX swildner */
849 /*
850 * Only need to use the minimum number of MSI vectors, as the driver
851 * doesn't support directed MSIX interrupts.
852 */
853 val = pci_msix_count(sc->ciss_dev);
854 if (val < CISS_MSI_COUNT) {
855 val = pci_msi_count(sc->ciss_dev);
856 device_printf(sc->ciss_dev, "got %d MSI messages]\n", val);
857 if (val < CISS_MSI_COUNT)
858 return (EINVAL);
859 }
860 val = MIN(val, CISS_MSI_COUNT);
861 if (pci_alloc_msix(sc->ciss_dev, &val) != 0) {
862 if (pci_alloc_msi(sc->ciss_dev, &val) != 0)
863 return (EINVAL);
864 }
865 #endif
866
867 val = 1;
868 sc->ciss_msi = val;
869 if (bootverbose)
870 ciss_printf(sc, "Using %d MSIX interrupt%s\n", val,
871 (val != 1) ? "s" : "");
872
873 for (i = 0; i < val; i++)
874 sc->ciss_irq_rid[i] = i + 1;
875
876 return (0);
877
878 }
879
880 /************************************************************************
881 * Setup the Performant structures.
882 */
883 static int
ciss_init_perf(struct ciss_softc * sc)884 ciss_init_perf(struct ciss_softc *sc)
885 {
886 struct ciss_perf_config *pc = sc->ciss_perf;
887 int reply_size;
888
889 /*
890 * Create the DMA tag for the reply queue.
891 */
892 reply_size = sizeof(uint64_t) * sc->ciss_max_requests;
893 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
894 1, 0, /* alignment, boundary */
895 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
896 BUS_SPACE_MAXADDR, /* highaddr */
897 reply_size, 1, /* maxsize, nsegments */
898 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
899 0, /* flags */
900 &sc->ciss_reply_dmat)) {
901 ciss_printf(sc, "can't allocate reply DMA tag\n");
902 return(ENOMEM);
903 }
904 /*
905 * Allocate memory and make it available for DMA.
906 */
907 if (bus_dmamem_alloc(sc->ciss_reply_dmat, (void **)&sc->ciss_reply,
908 BUS_DMA_NOWAIT, &sc->ciss_reply_map)) {
909 ciss_printf(sc, "can't allocate reply memory\n");
910 return(ENOMEM);
911 }
912 bus_dmamap_load(sc->ciss_reply_dmat, sc->ciss_reply_map, sc->ciss_reply,
913 reply_size, ciss_command_map_helper, &sc->ciss_reply_phys, 0);
914 bzero(sc->ciss_reply, reply_size);
915
916 sc->ciss_cycle = 0x1;
917 sc->ciss_rqidx = 0;
918
919 /*
920 * Preload the fetch table with common command sizes. This allows the
921 * hardware to not waste bus cycles for typical i/o commands, but also not
922 * tax the driver to be too exact in choosing sizes. The table is optimized
923 * for page-aligned i/o's, but since most i/o comes from the various pagers,
924 * it's a reasonable assumption to make.
925 */
926 pc->fetch_count[CISS_SG_FETCH_NONE] = (sizeof(struct ciss_command) + 15) / 16;
927 pc->fetch_count[CISS_SG_FETCH_1] =
928 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 1 + 15) / 16;
929 pc->fetch_count[CISS_SG_FETCH_2] =
930 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 2 + 15) / 16;
931 pc->fetch_count[CISS_SG_FETCH_4] =
932 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 4 + 15) / 16;
933 pc->fetch_count[CISS_SG_FETCH_8] =
934 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 8 + 15) / 16;
935 pc->fetch_count[CISS_SG_FETCH_16] =
936 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 16 + 15) / 16;
937 pc->fetch_count[CISS_SG_FETCH_32] =
938 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 32 + 15) / 16;
939 pc->fetch_count[CISS_SG_FETCH_MAX] = (CISS_COMMAND_ALLOC_SIZE + 15) / 16;
940
941 pc->rq_size = sc->ciss_max_requests; /* XXX less than the card supports? */
942 pc->rq_count = 1; /* XXX Hardcode for a single queue */
943 pc->rq_bank_hi = 0;
944 pc->rq_bank_lo = 0;
945 pc->rq[0].rq_addr_hi = 0x0;
946 pc->rq[0].rq_addr_lo = sc->ciss_reply_phys;
947
948 return(0);
949 }
950
951 /************************************************************************
952 * Wait for the adapter to come ready.
953 */
954 static int
ciss_wait_adapter(struct ciss_softc * sc)955 ciss_wait_adapter(struct ciss_softc *sc)
956 {
957 int i;
958
959 debug_called(1);
960
961 /*
962 * Wait for the adapter to come ready.
963 */
964 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) {
965 ciss_printf(sc, "waiting for adapter to come ready...\n");
966 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) {
967 DELAY(1000000); /* one second */
968 if (i > 30) {
969 ciss_printf(sc, "timed out waiting for adapter to come ready\n");
970 return(EIO);
971 }
972 }
973 }
974 return(0);
975 }
976
977 /************************************************************************
978 * Flush the adapter cache.
979 */
980 static int
ciss_flush_adapter(struct ciss_softc * sc)981 ciss_flush_adapter(struct ciss_softc *sc)
982 {
983 struct ciss_request *cr;
984 struct ciss_bmic_flush_cache *cbfc;
985 int error, command_status;
986
987 debug_called(1);
988
989 cr = NULL;
990 cbfc = NULL;
991
992 /*
993 * Build a BMIC request to flush the cache. We don't disable
994 * it, as we may be going to do more I/O (eg. we are emulating
995 * the Synchronise Cache command).
996 */
997 cbfc = kmalloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
998 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE,
999 (void **)&cbfc, sizeof(*cbfc))) != 0)
1000 goto out;
1001
1002 /*
1003 * Submit the request and wait for it to complete.
1004 */
1005 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1006 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error);
1007 goto out;
1008 }
1009
1010 /*
1011 * Check response.
1012 */
1013 ciss_report_request(cr, &command_status, NULL);
1014 switch(command_status) {
1015 case CISS_CMD_STATUS_SUCCESS:
1016 break;
1017 default:
1018 ciss_printf(sc, "error flushing cache (%s)\n",
1019 ciss_name_command_status(command_status));
1020 error = EIO;
1021 goto out;
1022 }
1023
1024 out:
1025 if (cbfc != NULL)
1026 kfree(cbfc, CISS_MALLOC_CLASS);
1027 if (cr != NULL)
1028 ciss_release_request(cr);
1029 return(error);
1030 }
1031
1032 static void
ciss_soft_reset(struct ciss_softc * sc)1033 ciss_soft_reset(struct ciss_softc *sc)
1034 {
1035 struct ciss_request *cr = NULL;
1036 struct ciss_command *cc;
1037 int i, error = 0;
1038
1039 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1040 /* only reset proxy controllers */
1041 if (sc->ciss_controllers[i].physical.bus == 0)
1042 continue;
1043
1044 if ((error = ciss_get_request(sc, &cr)) != 0)
1045 break;
1046
1047 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET,
1048 NULL, 0)) != 0)
1049 break;
1050
1051 cc = cr->cr_cc;
1052 cc->header.address = sc->ciss_controllers[i];
1053
1054 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0)
1055 break;
1056
1057 ciss_release_request(cr);
1058 }
1059
1060 if (error)
1061 ciss_printf(sc, "error resetting controller (%d)\n", error);
1062
1063 if (cr != NULL)
1064 ciss_release_request(cr);
1065 }
1066
1067 /************************************************************************
1068 * Allocate memory for the adapter command structures, initialise
1069 * the request structures.
1070 *
1071 * Note that the entire set of commands are allocated in a single
1072 * contiguous slab.
1073 */
1074 static int
ciss_init_requests(struct ciss_softc * sc)1075 ciss_init_requests(struct ciss_softc *sc)
1076 {
1077 struct ciss_request *cr;
1078 int i;
1079
1080 debug_called(1);
1081
1082 if (bootverbose)
1083 ciss_printf(sc, "using %d of %d available commands\n",
1084 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands);
1085
1086 /*
1087 * Create the DMA tag for commands.
1088 */
1089 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
1090 32, 0, /* alignment, boundary */
1091 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1092 BUS_SPACE_MAXADDR, /* highaddr */
1093 CISS_COMMAND_ALLOC_SIZE *
1094 sc->ciss_max_requests, 1, /* maxsize, nsegments */
1095 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1096 0, /* flags */
1097 &sc->ciss_command_dmat)) {
1098 ciss_printf(sc, "can't allocate command DMA tag\n");
1099 return(ENOMEM);
1100 }
1101 /*
1102 * Allocate memory and make it available for DMA.
1103 */
1104 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command,
1105 BUS_DMA_NOWAIT, &sc->ciss_command_map)) {
1106 ciss_printf(sc, "can't allocate command memory\n");
1107 return(ENOMEM);
1108 }
1109 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map,sc->ciss_command,
1110 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests,
1111 ciss_command_map_helper, &sc->ciss_command_phys, 0);
1112 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests);
1113
1114 /*
1115 * Set up the request and command structures, push requests onto
1116 * the free queue.
1117 */
1118 for (i = 1; i < sc->ciss_max_requests; i++) {
1119 cr = &sc->ciss_request[i];
1120 cr->cr_sc = sc;
1121 cr->cr_tag = i;
1122 cr->cr_cc = (struct ciss_command *)((uintptr_t)sc->ciss_command +
1123 CISS_COMMAND_ALLOC_SIZE * i);
1124 cr->cr_ccphys = sc->ciss_command_phys + CISS_COMMAND_ALLOC_SIZE * i;
1125 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap);
1126 ciss_enqueue_free(cr);
1127 }
1128 return(0);
1129 }
1130
1131 static void
ciss_command_map_helper(void * arg,bus_dma_segment_t * segs,int nseg,int error)1132 ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1133 {
1134 uint32_t *addr;
1135
1136 addr = arg;
1137 *addr = segs[0].ds_addr;
1138 }
1139
1140 /************************************************************************
1141 * Identify the adapter, print some information about it.
1142 */
1143 static int
ciss_identify_adapter(struct ciss_softc * sc)1144 ciss_identify_adapter(struct ciss_softc *sc)
1145 {
1146 struct ciss_request *cr;
1147 int error, command_status;
1148
1149 debug_called(1);
1150
1151 cr = NULL;
1152
1153 /*
1154 * Get a request, allocate storage for the adapter data.
1155 */
1156 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR,
1157 (void **)&sc->ciss_id,
1158 sizeof(*sc->ciss_id))) != 0)
1159 goto out;
1160
1161 /*
1162 * Submit the request and wait for it to complete.
1163 */
1164 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1165 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error);
1166 goto out;
1167 }
1168
1169 /*
1170 * Check response.
1171 */
1172 ciss_report_request(cr, &command_status, NULL);
1173 switch(command_status) {
1174 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1175 break;
1176 case CISS_CMD_STATUS_DATA_UNDERRUN:
1177 case CISS_CMD_STATUS_DATA_OVERRUN:
1178 ciss_printf(sc, "data over/underrun reading adapter information\n");
1179 default:
1180 ciss_printf(sc, "error reading adapter information (%s)\n",
1181 ciss_name_command_status(command_status));
1182 error = EIO;
1183 goto out;
1184 }
1185
1186 /* sanity-check reply */
1187 if (!sc->ciss_id->big_map_supported) {
1188 ciss_printf(sc, "adapter does not support BIG_MAP\n");
1189 error = ENXIO;
1190 goto out;
1191 }
1192
1193 #if 0
1194 /* XXX later revisions may not need this */
1195 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH;
1196 #endif
1197
1198 /* XXX only really required for old 5300 adapters? */
1199 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT;
1200
1201 /* print information */
1202 if (bootverbose) {
1203 #if 0 /* XXX proxy volumes??? */
1204 ciss_printf(sc, " %d logical drive%s configured\n",
1205 sc->ciss_id->configured_logical_drives,
1206 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s");
1207 #endif
1208 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision);
1209 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count);
1210
1211 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature);
1212 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence);
1213 ciss_printf(sc, " supported I/O methods 0x%pb%i\n",
1214 "\20\1READY\2simple\3performant\4MEMQ\n",
1215 sc->ciss_cfg->supported_methods);
1216 ciss_printf(sc, " active I/O method 0x%pb%i\n",
1217 "\20\2simple\3performant\4MEMQ\n",
1218 sc->ciss_cfg->active_method);
1219 ciss_printf(sc, " 4G page base 0x%08x\n",
1220 sc->ciss_cfg->command_physlimit);
1221 ciss_printf(sc, " interrupt coalesce delay %dus\n",
1222 sc->ciss_cfg->interrupt_coalesce_delay);
1223 ciss_printf(sc, " interrupt coalesce count %d\n",
1224 sc->ciss_cfg->interrupt_coalesce_count);
1225 ciss_printf(sc, " max outstanding commands %d\n",
1226 sc->ciss_cfg->max_outstanding_commands);
1227 ciss_printf(sc, " bus types 0x%pb%i\n",
1228 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n",
1229 sc->ciss_cfg->bus_types);
1230 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name);
1231 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat);
1232 }
1233
1234 out:
1235 if (error) {
1236 if (sc->ciss_id != NULL) {
1237 kfree(sc->ciss_id, CISS_MALLOC_CLASS);
1238 sc->ciss_id = NULL;
1239 }
1240 }
1241 if (cr != NULL)
1242 ciss_release_request(cr);
1243 return(error);
1244 }
1245
1246 /************************************************************************
1247 * Helper routine for generating a list of logical and physical luns.
1248 */
1249 static struct ciss_lun_report *
ciss_report_luns(struct ciss_softc * sc,int opcode,int nunits)1250 ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits)
1251 {
1252 struct ciss_request *cr;
1253 struct ciss_command *cc;
1254 struct ciss_report_cdb *crc;
1255 struct ciss_lun_report *cll;
1256 int command_status;
1257 int report_size;
1258 int error = 0;
1259
1260 debug_called(1);
1261
1262 cr = NULL;
1263 cll = NULL;
1264
1265 /*
1266 * Get a request, allocate storage for the address list.
1267 */
1268 if ((error = ciss_get_request(sc, &cr)) != 0)
1269 goto out;
1270 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address);
1271 cll = kmalloc(report_size, CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1272
1273 /*
1274 * Build the Report Logical/Physical LUNs command.
1275 */
1276 cc = cr->cr_cc;
1277 cr->cr_data = cll;
1278 cr->cr_length = report_size;
1279 cr->cr_flags = CISS_REQ_DATAIN;
1280
1281 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
1282 cc->header.address.physical.bus = 0;
1283 cc->header.address.physical.target = 0;
1284 cc->cdb.cdb_length = sizeof(*crc);
1285 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1286 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1287 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1288 cc->cdb.timeout = 30; /* XXX better suggestions? */
1289
1290 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]);
1291 bzero(crc, sizeof(*crc));
1292 crc->opcode = opcode;
1293 crc->length = htonl(report_size); /* big-endian field */
1294 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */
1295
1296 /*
1297 * Submit the request and wait for it to complete. (timeout
1298 * here should be much greater than above)
1299 */
1300 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1301 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error);
1302 goto out;
1303 }
1304
1305 /*
1306 * Check response. Note that data over/underrun is OK.
1307 */
1308 ciss_report_request(cr, &command_status, NULL);
1309 switch(command_status) {
1310 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1311 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */
1312 break;
1313 case CISS_CMD_STATUS_DATA_OVERRUN:
1314 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n",
1315 CISS_MAX_LOGICAL);
1316 break;
1317 default:
1318 ciss_printf(sc, "error detecting logical drive configuration (%s)\n",
1319 ciss_name_command_status(command_status));
1320 error = EIO;
1321 goto out;
1322 }
1323 ciss_release_request(cr);
1324 cr = NULL;
1325
1326 out:
1327 if (cr != NULL)
1328 ciss_release_request(cr);
1329 if (error && cll != NULL) {
1330 kfree(cll, CISS_MALLOC_CLASS);
1331 cll = NULL;
1332 }
1333 return(cll);
1334 }
1335
1336 /************************************************************************
1337 * Find logical drives on the adapter.
1338 */
1339 static int
ciss_init_logical(struct ciss_softc * sc)1340 ciss_init_logical(struct ciss_softc *sc)
1341 {
1342 struct ciss_lun_report *cll;
1343 int error = 0, i, j;
1344 int ndrives;
1345
1346 debug_called(1);
1347
1348 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
1349 CISS_MAX_LOGICAL);
1350 if (cll == NULL) {
1351 error = ENXIO;
1352 goto out;
1353 }
1354
1355 /* sanity-check reply */
1356 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1357 if ((ndrives < 0) || (ndrives > CISS_MAX_LOGICAL)) {
1358 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n",
1359 ndrives, CISS_MAX_LOGICAL);
1360 error = ENXIO;
1361 goto out;
1362 }
1363
1364 /*
1365 * Save logical drive information.
1366 */
1367 if (bootverbose) {
1368 ciss_printf(sc, "%d logical drive%s\n",
1369 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : "");
1370 }
1371
1372 sc->ciss_logical =
1373 kmalloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *),
1374 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1375
1376 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1377 sc->ciss_logical[i] =
1378 kmalloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive),
1379 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1380
1381 for (j = 0; j < CISS_MAX_LOGICAL; j++)
1382 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT;
1383 }
1384
1385
1386 for (i = 0; i < CISS_MAX_LOGICAL; i++) {
1387 if (i < ndrives) {
1388 struct ciss_ldrive *ld;
1389 int bus, target;
1390
1391 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
1392 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
1393 ld = &sc->ciss_logical[bus][target];
1394
1395 ld->cl_address = cll->lun[i];
1396 ld->cl_controller = &sc->ciss_controllers[bus];
1397 if (ciss_identify_logical(sc, ld) != 0)
1398 continue;
1399 /*
1400 * If the drive has had media exchanged, we should bring it online.
1401 */
1402 if (ld->cl_lstatus->media_exchanged)
1403 ciss_accept_media(sc, ld);
1404
1405 }
1406 }
1407
1408 out:
1409 if (cll != NULL)
1410 kfree(cll, CISS_MALLOC_CLASS);
1411 return(error);
1412 }
1413
1414 static int
ciss_init_physical(struct ciss_softc * sc)1415 ciss_init_physical(struct ciss_softc *sc)
1416 {
1417 struct ciss_lun_report *cll;
1418 int error = 0, i;
1419 int nphys;
1420 int bus;
1421
1422 debug_called(1);
1423
1424 bus = 0;
1425
1426 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
1427 CISS_MAX_PHYSICAL);
1428 if (cll == NULL) {
1429 error = ENXIO;
1430 goto out;
1431 }
1432
1433 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1434
1435 if (bootverbose) {
1436 ciss_printf(sc, "%d physical device%s\n",
1437 nphys, (nphys > 1 || nphys == 0) ? "s" : "");
1438 }
1439
1440 /*
1441 * Figure out the bus mapping.
1442 * Logical buses include both the local logical bus for local arrays and
1443 * proxy buses for remote arrays. Physical buses are numbered by the
1444 * controller and represent physical buses that hold physical devices.
1445 * We shift these bus numbers so that everything fits into a single flat
1446 * numbering space for CAM. Logical buses occupy the first 32 CAM bus
1447 * numbers, and the physical bus numbers are shifted to be above that.
1448 * This results in the various driver arrays being indexed as follows:
1449 *
1450 * ciss_controllers[] - indexed by logical bus
1451 * ciss_cam_sim[] - indexed by both logical and physical, with physical
1452 * being shifted by 32.
1453 * ciss_logical[][] - indexed by logical bus
1454 * ciss_physical[][] - indexed by physical bus
1455 *
1456 * XXX This is getting more and more hackish. CISS really doesn't play
1457 * well with a standard SCSI model; devices are addressed via magic
1458 * cookies, not via b/t/l addresses. Since there is no way to store
1459 * the cookie in the CAM device object, we have to keep these lookup
1460 * tables handy so that the devices can be found quickly at the cost
1461 * of wasting memory and having a convoluted lookup scheme. This
1462 * driver should probably be converted to block interface.
1463 */
1464 /*
1465 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy
1466 * controller. A proxy controller is another physical controller
1467 * behind the primary PCI controller. We need to know about this
1468 * so that BMIC commands can be properly targeted. There can be
1469 * proxy controllers attached to a single PCI controller, so
1470 * find the highest numbered one so the array can be properly
1471 * sized.
1472 */
1473 sc->ciss_max_logical_bus = 1;
1474 for (i = 0; i < nphys; i++) {
1475 if (cll->lun[i].physical.extra_address == 0) {
1476 bus = cll->lun[i].physical.bus;
1477 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1;
1478 } else {
1479 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address);
1480 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus);
1481 }
1482 }
1483
1484 sc->ciss_controllers =
1485 kmalloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address),
1486 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1487
1488 /* setup a map of controller addresses */
1489 for (i = 0; i < nphys; i++) {
1490 if (cll->lun[i].physical.extra_address == 0) {
1491 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i];
1492 }
1493 }
1494
1495 sc->ciss_physical =
1496 kmalloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *),
1497 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1498
1499 for (i = 0; i < sc->ciss_max_physical_bus; i++) {
1500 sc->ciss_physical[i] =
1501 kmalloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT,
1502 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1503 }
1504
1505 ciss_filter_physical(sc, cll);
1506
1507 out:
1508 if (cll != NULL)
1509 kfree(cll, CISS_MALLOC_CLASS);
1510
1511 return(error);
1512 }
1513
1514 static int
ciss_filter_physical(struct ciss_softc * sc,struct ciss_lun_report * cll)1515 ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll)
1516 {
1517 u_int32_t ea;
1518 int i, nphys;
1519 int bus, target;
1520
1521 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1522 for (i = 0; i < nphys; i++) {
1523 if (cll->lun[i].physical.extra_address == 0)
1524 continue;
1525
1526 /*
1527 * Filter out devices that we don't want. Level 3 LUNs could
1528 * probably be supported, but the docs don't give enough of a
1529 * hint to know how.
1530 *
1531 * The mode field of the physical address is likely set to have
1532 * hard disks masked out. Honor it unless the user has overridden
1533 * us with the tunable. We also munge the inquiry data for these
1534 * disks so that they only show up as passthrough devices. Keeping
1535 * them visible in this fashion is useful for doing things like
1536 * flashing firmware.
1537 */
1538 ea = cll->lun[i].physical.extra_address;
1539 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) ||
1540 (CISS_EXTRA_MODE2(ea) == 0x3))
1541 continue;
1542 if ((ciss_expose_hidden_physical == 0) &&
1543 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL))
1544 continue;
1545
1546 /*
1547 * Note: CISS firmware numbers physical busses starting at '1', not
1548 * '0'. This numbering is internal to the firmware and is only
1549 * used as a hint here.
1550 */
1551 bus = CISS_EXTRA_BUS2(ea) - 1;
1552 target = CISS_EXTRA_TARGET2(ea);
1553 sc->ciss_physical[bus][target].cp_address = cll->lun[i];
1554 sc->ciss_physical[bus][target].cp_online = 1;
1555 }
1556
1557 return (0);
1558 }
1559
1560 static int
ciss_inquiry_logical(struct ciss_softc * sc,struct ciss_ldrive * ld)1561 ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1562 {
1563 struct ciss_request *cr;
1564 struct ciss_command *cc;
1565 struct scsi_inquiry *inq;
1566 int error;
1567 int command_status;
1568
1569 cr = NULL;
1570
1571 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry));
1572
1573 if ((error = ciss_get_request(sc, &cr)) != 0)
1574 goto out;
1575
1576 cc = cr->cr_cc;
1577 cr->cr_data = &ld->cl_geometry;
1578 cr->cr_length = sizeof(ld->cl_geometry);
1579 cr->cr_flags = CISS_REQ_DATAIN;
1580
1581 cc->header.address = ld->cl_address;
1582 cc->cdb.cdb_length = 6;
1583 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1584 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1585 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1586 cc->cdb.timeout = 30;
1587
1588 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]);
1589 inq->opcode = INQUIRY;
1590 inq->byte2 = SI_EVPD;
1591 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY;
1592 inq->length = sizeof(ld->cl_geometry);
1593
1594 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1595 ciss_printf(sc, "error getting geometry (%d)\n", error);
1596 goto out;
1597 }
1598
1599 ciss_report_request(cr, &command_status, NULL);
1600 switch(command_status) {
1601 case CISS_CMD_STATUS_SUCCESS:
1602 case CISS_CMD_STATUS_DATA_UNDERRUN:
1603 break;
1604 case CISS_CMD_STATUS_DATA_OVERRUN:
1605 ciss_printf(sc, "WARNING: Data overrun\n");
1606 break;
1607 default:
1608 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n",
1609 ciss_name_command_status(command_status));
1610 break;
1611 }
1612
1613 out:
1614 if (cr != NULL)
1615 ciss_release_request(cr);
1616 return(error);
1617 }
1618 /************************************************************************
1619 * Identify a logical drive, initialise state related to it.
1620 */
1621 static int
ciss_identify_logical(struct ciss_softc * sc,struct ciss_ldrive * ld)1622 ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1623 {
1624 struct ciss_request *cr;
1625 struct ciss_command *cc;
1626 struct ciss_bmic_cdb *cbc;
1627 int error, command_status;
1628
1629 debug_called(1);
1630
1631 cr = NULL;
1632
1633 /*
1634 * Build a BMIC request to fetch the drive ID.
1635 */
1636 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE,
1637 (void **)&ld->cl_ldrive,
1638 sizeof(*ld->cl_ldrive))) != 0)
1639 goto out;
1640 cc = cr->cr_cc;
1641 cc->header.address = *ld->cl_controller; /* target controller */
1642 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1643 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1644
1645 /*
1646 * Submit the request and wait for it to complete.
1647 */
1648 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1649 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error);
1650 goto out;
1651 }
1652
1653 /*
1654 * Check response.
1655 */
1656 ciss_report_request(cr, &command_status, NULL);
1657 switch(command_status) {
1658 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1659 break;
1660 case CISS_CMD_STATUS_DATA_UNDERRUN:
1661 case CISS_CMD_STATUS_DATA_OVERRUN:
1662 ciss_printf(sc, "data over/underrun reading logical drive ID\n");
1663 default:
1664 ciss_printf(sc, "error reading logical drive ID (%s)\n",
1665 ciss_name_command_status(command_status));
1666 error = EIO;
1667 goto out;
1668 }
1669 ciss_release_request(cr);
1670 cr = NULL;
1671
1672 /*
1673 * Build a CISS BMIC command to get the logical drive status.
1674 */
1675 if ((error = ciss_get_ldrive_status(sc, ld)) != 0)
1676 goto out;
1677
1678 /*
1679 * Get the logical drive geometry.
1680 */
1681 if ((error = ciss_inquiry_logical(sc, ld)) != 0)
1682 goto out;
1683
1684 /*
1685 * Print the drive's basic characteristics.
1686 */
1687 if (bootverbose) {
1688 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ",
1689 CISS_LUN_TO_BUS(ld->cl_address.logical.lun),
1690 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun),
1691 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance),
1692 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) *
1693 ld->cl_ldrive->block_size));
1694
1695 ciss_print_ldrive(sc, ld);
1696 }
1697 out:
1698 if (error != 0) {
1699 /* make the drive not-exist */
1700 ld->cl_status = CISS_LD_NONEXISTENT;
1701 if (ld->cl_ldrive != NULL) {
1702 kfree(ld->cl_ldrive, CISS_MALLOC_CLASS);
1703 ld->cl_ldrive = NULL;
1704 }
1705 if (ld->cl_lstatus != NULL) {
1706 kfree(ld->cl_lstatus, CISS_MALLOC_CLASS);
1707 ld->cl_lstatus = NULL;
1708 }
1709 }
1710 if (cr != NULL)
1711 ciss_release_request(cr);
1712
1713 return(error);
1714 }
1715
1716 /************************************************************************
1717 * Get status for a logical drive.
1718 *
1719 * XXX should we also do this in response to Test Unit Ready?
1720 */
1721 static int
ciss_get_ldrive_status(struct ciss_softc * sc,struct ciss_ldrive * ld)1722 ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld)
1723 {
1724 struct ciss_request *cr;
1725 struct ciss_command *cc;
1726 struct ciss_bmic_cdb *cbc;
1727 int error, command_status;
1728
1729 /*
1730 * Build a CISS BMIC command to get the logical drive status.
1731 */
1732 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS,
1733 (void **)&ld->cl_lstatus,
1734 sizeof(*ld->cl_lstatus))) != 0)
1735 goto out;
1736 cc = cr->cr_cc;
1737 cc->header.address = *ld->cl_controller; /* target controller */
1738 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1739 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1740
1741 /*
1742 * Submit the request and wait for it to complete.
1743 */
1744 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1745 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error);
1746 goto out;
1747 }
1748
1749 /*
1750 * Check response.
1751 */
1752 ciss_report_request(cr, &command_status, NULL);
1753 switch(command_status) {
1754 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1755 break;
1756 case CISS_CMD_STATUS_DATA_UNDERRUN:
1757 case CISS_CMD_STATUS_DATA_OVERRUN:
1758 ciss_printf(sc, "data over/underrun reading logical drive status\n");
1759 default:
1760 ciss_printf(sc, "error reading logical drive status (%s)\n",
1761 ciss_name_command_status(command_status));
1762 error = EIO;
1763 goto out;
1764 }
1765
1766 /*
1767 * Set the drive's summary status based on the returned status.
1768 *
1769 * XXX testing shows that a failed JBOD drive comes back at next
1770 * boot in "queued for expansion" mode. WTF?
1771 */
1772 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status);
1773
1774 out:
1775 if (cr != NULL)
1776 ciss_release_request(cr);
1777 return(error);
1778 }
1779
1780 /************************************************************************
1781 * Notify the adapter of a config update.
1782 */
1783 static int
ciss_update_config(struct ciss_softc * sc)1784 ciss_update_config(struct ciss_softc *sc)
1785 {
1786 int i;
1787
1788 debug_called(1);
1789
1790 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE);
1791 for (i = 0; i < 1000; i++) {
1792 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) &
1793 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) {
1794 return(0);
1795 }
1796 DELAY(1000);
1797 }
1798 return(1);
1799 }
1800
1801 /************************************************************************
1802 * Accept new media into a logical drive.
1803 *
1804 * XXX The drive has previously been offline; it would be good if we
1805 * could make sure it's not open right now.
1806 */
1807 static int
ciss_accept_media(struct ciss_softc * sc,struct ciss_ldrive * ld)1808 ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld)
1809 {
1810 struct ciss_request *cr;
1811 struct ciss_command *cc;
1812 struct ciss_bmic_cdb *cbc;
1813 int command_status;
1814 int error = 0, ldrive;
1815
1816 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1817
1818 debug(0, "bringing logical drive %d back online", ldrive);
1819
1820 /*
1821 * Build a CISS BMIC command to bring the drive back online.
1822 */
1823 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA,
1824 NULL, 0)) != 0)
1825 goto out;
1826 cc = cr->cr_cc;
1827 cc->header.address = *ld->cl_controller; /* target controller */
1828 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1829 cbc->log_drive = ldrive;
1830
1831 /*
1832 * Submit the request and wait for it to complete.
1833 */
1834 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1835 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error);
1836 goto out;
1837 }
1838
1839 /*
1840 * Check response.
1841 */
1842 ciss_report_request(cr, &command_status, NULL);
1843 switch(command_status) {
1844 case CISS_CMD_STATUS_SUCCESS: /* all OK */
1845 /* we should get a logical drive status changed event here */
1846 break;
1847 default:
1848 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n",
1849 ciss_name_command_status(command_status));
1850 break;
1851 }
1852
1853 out:
1854 if (cr != NULL)
1855 ciss_release_request(cr);
1856 return(error);
1857 }
1858
1859 /************************************************************************
1860 * Release adapter resources.
1861 */
1862 static void
ciss_free(struct ciss_softc * sc)1863 ciss_free(struct ciss_softc *sc)
1864 {
1865 struct ciss_request *cr;
1866 int i, j;
1867
1868 debug_called(1);
1869
1870 /* we're going away */
1871 sc->ciss_flags |= CISS_FLAG_ABORTING;
1872
1873 /* terminate the periodic heartbeat routine */
1874 callout_stop(&sc->ciss_periodic);
1875
1876 /* cancel the Event Notify chain */
1877 ciss_notify_abort(sc);
1878
1879 ciss_kill_notify_thread(sc);
1880
1881 /* disconnect from CAM */
1882 if (sc->ciss_cam_sim) {
1883 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1884 if (sc->ciss_cam_sim[i]) {
1885 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1886 cam_sim_free(sc->ciss_cam_sim[i]);
1887 }
1888 }
1889 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
1890 CISS_PHYSICAL_BASE; i++) {
1891 if (sc->ciss_cam_sim[i]) {
1892 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1893 cam_sim_free(sc->ciss_cam_sim[i]);
1894 }
1895 }
1896 kfree(sc->ciss_cam_sim, CISS_MALLOC_CLASS);
1897 }
1898 if (sc->ciss_cam_devq)
1899 cam_simq_release(sc->ciss_cam_devq);
1900
1901 /* remove the control device */
1902 lockmgr(&sc->ciss_lock, LK_RELEASE);
1903 if (sc->ciss_dev_t != NULL)
1904 destroy_dev(sc->ciss_dev_t);
1905
1906 /* Final cleanup of the callout. */
1907 callout_terminate(&sc->ciss_periodic);
1908 lockuninit(&sc->ciss_lock);
1909
1910 /* free the controller data */
1911 if (sc->ciss_id != NULL)
1912 kfree(sc->ciss_id, CISS_MALLOC_CLASS);
1913
1914 /* release I/O resources */
1915 if (sc->ciss_regs_resource != NULL)
1916 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1917 sc->ciss_regs_rid, sc->ciss_regs_resource);
1918 if (sc->ciss_cfg_resource != NULL)
1919 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1920 sc->ciss_cfg_rid, sc->ciss_cfg_resource);
1921 if (sc->ciss_intr != NULL)
1922 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr);
1923 if (sc->ciss_irq_resource != NULL)
1924 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ,
1925 sc->ciss_irq_rid[0], sc->ciss_irq_resource);
1926 if (sc->ciss_irq_type == PCI_INTR_TYPE_MSI)
1927 pci_release_msi(sc->ciss_dev);
1928
1929 while ((cr = ciss_dequeue_free(sc)) != NULL)
1930 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap);
1931 if (sc->ciss_buffer_dmat)
1932 bus_dma_tag_destroy(sc->ciss_buffer_dmat);
1933
1934 /* destroy command memory and DMA tag */
1935 if (sc->ciss_command != NULL) {
1936 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map);
1937 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map);
1938 }
1939 if (sc->ciss_command_dmat)
1940 bus_dma_tag_destroy(sc->ciss_command_dmat);
1941
1942 if (sc->ciss_reply) {
1943 bus_dmamap_unload(sc->ciss_reply_dmat, sc->ciss_reply_map);
1944 bus_dmamem_free(sc->ciss_reply_dmat, sc->ciss_reply, sc->ciss_reply_map);
1945 }
1946 if (sc->ciss_reply_dmat)
1947 bus_dma_tag_destroy(sc->ciss_reply_dmat);
1948
1949 /* destroy DMA tags */
1950 if (sc->ciss_parent_dmat)
1951 bus_dma_tag_destroy(sc->ciss_parent_dmat);
1952 if (sc->ciss_logical) {
1953 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1954 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
1955 if (sc->ciss_logical[i][j].cl_ldrive)
1956 kfree(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS);
1957 if (sc->ciss_logical[i][j].cl_lstatus)
1958 kfree(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS);
1959 }
1960 kfree(sc->ciss_logical[i], CISS_MALLOC_CLASS);
1961 }
1962 kfree(sc->ciss_logical, CISS_MALLOC_CLASS);
1963 }
1964
1965 if (sc->ciss_physical) {
1966 for (i = 0; i < sc->ciss_max_physical_bus; i++)
1967 kfree(sc->ciss_physical[i], CISS_MALLOC_CLASS);
1968 kfree(sc->ciss_physical, CISS_MALLOC_CLASS);
1969 }
1970
1971 if (sc->ciss_controllers)
1972 kfree(sc->ciss_controllers, CISS_MALLOC_CLASS);
1973 }
1974
1975 /************************************************************************
1976 * Give a command to the adapter.
1977 *
1978 * Note that this uses the simple transport layer directly. If we
1979 * want to add support for other layers, we'll need a switch of some
1980 * sort.
1981 *
1982 * Note that the simple transport layer has no way of refusing a
1983 * command; we only have as many request structures as the adapter
1984 * supports commands, so we don't have to check (this presumes that
1985 * the adapter can handle commands as fast as we throw them at it).
1986 */
1987 static int
ciss_start(struct ciss_request * cr)1988 ciss_start(struct ciss_request *cr)
1989 {
1990 #ifdef CISS_DEBUG
1991 struct ciss_command *cc;
1992 #endif
1993 int error;
1994
1995 #ifdef CISS_DEBUG
1996 cc = cr->cr_cc;
1997 #endif
1998 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag);
1999
2000 /*
2001 * Map the request's data.
2002 */
2003 if ((error = ciss_map_request(cr)))
2004 return(error);
2005
2006 #if 0
2007 ciss_print_request(cr);
2008 #endif
2009
2010 return(0);
2011 }
2012
2013 /************************************************************************
2014 * Fetch completed request(s) from the adapter, queue them for
2015 * completion handling.
2016 *
2017 * Note that this uses the simple transport layer directly. If we
2018 * want to add support for other layers, we'll need a switch of some
2019 * sort.
2020 *
2021 * Note that the simple transport mechanism does not require any
2022 * reentrancy protection; the OPQ read is atomic. If there is a
2023 * chance of a race with something else that might move the request
2024 * off the busy list, then we will have to lock against that
2025 * (eg. timeouts, etc.)
2026 */
2027 static void
ciss_done(struct ciss_softc * sc,cr_qhead_t * qh)2028 ciss_done(struct ciss_softc *sc, cr_qhead_t *qh)
2029 {
2030 struct ciss_request *cr;
2031 struct ciss_command *cc;
2032 u_int32_t tag, index;
2033
2034 debug_called(3);
2035
2036 /*
2037 * Loop quickly taking requests from the adapter and moving them
2038 * to the completed queue.
2039 */
2040 for (;;) {
2041
2042 tag = CISS_TL_SIMPLE_FETCH_CMD(sc);
2043 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY)
2044 break;
2045 index = tag >> 2;
2046 debug(2, "completed command %d%s", index,
2047 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2048 if (index >= sc->ciss_max_requests) {
2049 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2050 continue;
2051 }
2052 cr = &(sc->ciss_request[index]);
2053 cc = cr->cr_cc;
2054 cc->header.host_tag = tag; /* not updated by adapter */
2055 ciss_enqueue_complete(cr, qh);
2056 }
2057
2058 }
2059
2060 static void
ciss_perf_done(struct ciss_softc * sc,cr_qhead_t * qh)2061 ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh)
2062 {
2063 struct ciss_request *cr;
2064 struct ciss_command *cc;
2065 u_int32_t tag, index;
2066
2067 debug_called(3);
2068
2069 /*
2070 * Loop quickly taking requests from the adapter and moving them
2071 * to the completed queue.
2072 */
2073 for (;;) {
2074 tag = sc->ciss_reply[sc->ciss_rqidx];
2075 if ((tag & CISS_CYCLE_MASK) != sc->ciss_cycle)
2076 break;
2077 index = tag >> 2;
2078 debug(2, "completed command %d%s\n", index,
2079 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2080 if (index < sc->ciss_max_requests) {
2081 cr = &(sc->ciss_request[index]);
2082 cc = cr->cr_cc;
2083 cc->header.host_tag = tag; /* not updated by adapter */
2084 ciss_enqueue_complete(cr, qh);
2085 } else {
2086 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2087 }
2088 if (++sc->ciss_rqidx == sc->ciss_max_requests) {
2089 sc->ciss_rqidx = 0;
2090 sc->ciss_cycle ^= 1;
2091 }
2092 }
2093
2094 }
2095
2096 /************************************************************************
2097 * Take an interrupt from the adapter.
2098 */
2099 static void
ciss_intr(void * arg)2100 ciss_intr(void *arg)
2101 {
2102 cr_qhead_t qh;
2103 struct ciss_softc *sc = (struct ciss_softc *)arg;
2104
2105 /*
2106 * The only interrupt we recognise indicates that there are
2107 * entries in the outbound post queue.
2108 */
2109 STAILQ_INIT(&qh);
2110 ciss_done(sc, &qh);
2111 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
2112 ciss_complete(sc, &qh);
2113 lockmgr(&sc->ciss_lock, LK_RELEASE);
2114 }
2115
2116 static void
ciss_perf_intr(void * arg)2117 ciss_perf_intr(void *arg)
2118 {
2119 struct ciss_softc *sc = (struct ciss_softc *)arg;
2120
2121 /* Clear the interrupt and flush the bridges. Docs say that the flush
2122 * needs to be done twice, which doesn't seem right.
2123 */
2124 CISS_TL_PERF_CLEAR_INT(sc);
2125 CISS_TL_PERF_FLUSH_INT(sc);
2126
2127 ciss_perf_msi_intr(sc);
2128 }
2129
2130 static void
ciss_perf_msi_intr(void * arg)2131 ciss_perf_msi_intr(void *arg)
2132 {
2133 cr_qhead_t qh;
2134 struct ciss_softc *sc = (struct ciss_softc *)arg;
2135
2136 STAILQ_INIT(&qh);
2137 ciss_perf_done(sc, &qh);
2138 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
2139 ciss_complete(sc, &qh);
2140 lockmgr(&sc->ciss_lock, LK_RELEASE);
2141 }
2142
2143
2144 /************************************************************************
2145 * Process completed requests.
2146 *
2147 * Requests can be completed in three fashions:
2148 *
2149 * - by invoking a callback function (cr_complete is non-null)
2150 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set)
2151 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context
2152 */
2153 static void
ciss_complete(struct ciss_softc * sc,cr_qhead_t * qh)2154 ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh)
2155 {
2156 struct ciss_request *cr;
2157
2158 debug_called(2);
2159
2160 /*
2161 * Loop taking requests off the completed queue and performing
2162 * completion processing on them.
2163 */
2164 for (;;) {
2165 if ((cr = ciss_dequeue_complete(sc, qh)) == NULL)
2166 break;
2167 ciss_unmap_request(cr);
2168
2169 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
2170 ciss_printf(sc, "WARNING: completing non-busy request\n");
2171 cr->cr_flags &= ~CISS_REQ_BUSY;
2172
2173 /*
2174 * If the request has a callback, invoke it.
2175 */
2176 if (cr->cr_complete != NULL) {
2177 cr->cr_complete(cr);
2178 continue;
2179 }
2180
2181 /*
2182 * If someone is sleeping on this request, wake them up.
2183 */
2184 if (cr->cr_flags & CISS_REQ_SLEEP) {
2185 cr->cr_flags &= ~CISS_REQ_SLEEP;
2186 wakeup(cr);
2187 continue;
2188 }
2189
2190 /*
2191 * If someone is polling this request for completion, signal.
2192 */
2193 if (cr->cr_flags & CISS_REQ_POLL) {
2194 cr->cr_flags &= ~CISS_REQ_POLL;
2195 continue;
2196 }
2197
2198 /*
2199 * Give up and throw the request back on the free queue. This
2200 * should never happen; resources will probably be lost.
2201 */
2202 ciss_printf(sc, "WARNING: completed command with no submitter\n");
2203 ciss_enqueue_free(cr);
2204 }
2205 }
2206
2207 /************************************************************************
2208 * Report on the completion status of a request, and pass back SCSI
2209 * and command status values.
2210 */
2211 static int
_ciss_report_request(struct ciss_request * cr,int * command_status,int * scsi_status,const char * func)2212 _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func)
2213 {
2214 struct ciss_command *cc;
2215 struct ciss_error_info *ce;
2216
2217 debug_called(2);
2218
2219 cc = cr->cr_cc;
2220 ce = (struct ciss_error_info *)&(cc->sg[0]);
2221
2222 /*
2223 * We don't consider data under/overrun an error for the Report
2224 * Logical/Physical LUNs commands.
2225 */
2226 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) &&
2227 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) ||
2228 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) &&
2229 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) ||
2230 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) ||
2231 (cc->cdb.cdb[0] == INQUIRY))) {
2232 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR;
2233 debug(2, "ignoring irrelevant under/overrun error");
2234 }
2235
2236 /*
2237 * Check the command's error bit, if clear, there's no status and
2238 * everything is OK.
2239 */
2240 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) {
2241 if (scsi_status != NULL)
2242 *scsi_status = SCSI_STATUS_OK;
2243 if (command_status != NULL)
2244 *command_status = CISS_CMD_STATUS_SUCCESS;
2245 return(0);
2246 } else {
2247 if (command_status != NULL)
2248 *command_status = ce->command_status;
2249 if (scsi_status != NULL) {
2250 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) {
2251 *scsi_status = ce->scsi_status;
2252 } else {
2253 *scsi_status = -1;
2254 }
2255 }
2256 if (bootverbose)
2257 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n",
2258 ce->command_status, ciss_name_command_status(ce->command_status),
2259 ce->scsi_status);
2260 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) {
2261 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x, function %s\n",
2262 ce->additional_error_info.invalid_command.offense_size,
2263 ce->additional_error_info.invalid_command.offense_offset,
2264 ce->additional_error_info.invalid_command.offense_value,
2265 func);
2266 }
2267 }
2268 #if 0
2269 ciss_print_request(cr);
2270 #endif
2271 return(1);
2272 }
2273
2274 /************************************************************************
2275 * Issue a request and don't return until it's completed.
2276 *
2277 * Depending on adapter status, we may poll or sleep waiting for
2278 * completion.
2279 */
2280 static int
ciss_synch_request(struct ciss_request * cr,int timeout)2281 ciss_synch_request(struct ciss_request *cr, int timeout)
2282 {
2283 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) {
2284 return(ciss_wait_request(cr, timeout));
2285 } else {
2286 return(ciss_poll_request(cr, timeout));
2287 }
2288 }
2289
2290 /************************************************************************
2291 * Issue a request and poll for completion.
2292 *
2293 * Timeout in milliseconds.
2294 */
2295 static int
ciss_poll_request(struct ciss_request * cr,int timeout)2296 ciss_poll_request(struct ciss_request *cr, int timeout)
2297 {
2298 cr_qhead_t qh;
2299 struct ciss_softc *sc;
2300 int error;
2301
2302 debug_called(2);
2303
2304 STAILQ_INIT(&qh);
2305 sc = cr->cr_sc;
2306 cr->cr_flags |= CISS_REQ_POLL;
2307 if ((error = ciss_start(cr)) != 0)
2308 return(error);
2309
2310 do {
2311 if (sc->ciss_perf)
2312 ciss_perf_done(sc, &qh);
2313 else
2314 ciss_done(sc, &qh);
2315 ciss_complete(sc, &qh);
2316 if (!(cr->cr_flags & CISS_REQ_POLL))
2317 return(0);
2318 DELAY(1000);
2319 } while (timeout-- >= 0);
2320 return(EWOULDBLOCK);
2321 }
2322
2323 /************************************************************************
2324 * Issue a request and sleep waiting for completion.
2325 *
2326 * Timeout in milliseconds. Note that a spurious wakeup will reset
2327 * the timeout.
2328 */
2329 static int
ciss_wait_request(struct ciss_request * cr,int timeout)2330 ciss_wait_request(struct ciss_request *cr, int timeout)
2331 {
2332 int error;
2333
2334 debug_called(2);
2335
2336 cr->cr_flags |= CISS_REQ_SLEEP;
2337 if ((error = ciss_start(cr)) != 0)
2338 return(error);
2339
2340 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
2341 error = lksleep(cr, &cr->cr_sc->ciss_lock, 0, "cissREQ", (timeout * hz) / 1000);
2342 }
2343 return(error);
2344 }
2345
2346 #if 0
2347 /************************************************************************
2348 * Abort a request. Note that a potential exists here to race the
2349 * request being completed; the caller must deal with this.
2350 */
2351 static int
2352 ciss_abort_request(struct ciss_request *ar)
2353 {
2354 struct ciss_request *cr;
2355 struct ciss_command *cc;
2356 struct ciss_message_cdb *cmc;
2357 int error;
2358
2359 debug_called(1);
2360
2361 /* get a request */
2362 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0)
2363 return(error);
2364
2365 /* build the abort command */
2366 cc = cr->cr_cc;
2367 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */
2368 cc->header.address.physical.target = 0;
2369 cc->header.address.physical.bus = 0;
2370 cc->cdb.cdb_length = sizeof(*cmc);
2371 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
2372 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2373 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
2374 cc->cdb.timeout = 30;
2375
2376 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]);
2377 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT;
2378 cmc->type = CISS_MESSAGE_ABORT_TASK;
2379 cmc->abort_tag = ar->cr_tag; /* endianness?? */
2380
2381 /*
2382 * Send the request and wait for a response. If we believe we
2383 * aborted the request OK, clear the flag that indicates it's
2384 * running.
2385 */
2386 error = ciss_synch_request(cr, 35 * 1000);
2387 if (!error)
2388 error = ciss_report_request(cr, NULL, NULL);
2389 ciss_release_request(cr);
2390
2391 return(error);
2392 }
2393 #endif
2394
2395
2396 /************************************************************************
2397 * Fetch and initialise a request
2398 */
2399 static int
ciss_get_request(struct ciss_softc * sc,struct ciss_request ** crp)2400 ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp)
2401 {
2402 struct ciss_request *cr;
2403
2404 debug_called(2);
2405
2406 /*
2407 * Get a request and clean it up.
2408 */
2409 if ((cr = ciss_dequeue_free(sc)) == NULL)
2410 return(ENOMEM);
2411
2412 cr->cr_data = NULL;
2413 cr->cr_flags = 0;
2414 cr->cr_complete = NULL;
2415 cr->cr_private = NULL;
2416 cr->cr_sg_tag = CISS_SG_MAX; /* Backstop to prevent accidents */
2417
2418 ciss_preen_command(cr);
2419 *crp = cr;
2420 return(0);
2421 }
2422
2423 static void
ciss_preen_command(struct ciss_request * cr)2424 ciss_preen_command(struct ciss_request *cr)
2425 {
2426 struct ciss_command *cc;
2427 u_int32_t cmdphys;
2428
2429 /*
2430 * Clean up the command structure.
2431 *
2432 * Note that we set up the error_info structure here, since the
2433 * length can be overwritten by any command.
2434 */
2435 cc = cr->cr_cc;
2436 cc->header.sg_in_list = 0; /* kinda inefficient this way */
2437 cc->header.sg_total = 0;
2438 cc->header.host_tag = cr->cr_tag << 2;
2439 cc->header.host_tag_zeroes = 0;
2440 cmdphys = cr->cr_ccphys;
2441 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command);
2442 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command);
2443 }
2444
2445 /************************************************************************
2446 * Release a request to the free list.
2447 */
2448 static void
ciss_release_request(struct ciss_request * cr)2449 ciss_release_request(struct ciss_request *cr)
2450 {
2451 debug_called(2);
2452
2453 /* release the request to the free queue */
2454 ciss_requeue_free(cr);
2455 }
2456
2457 /************************************************************************
2458 * Allocate a request that will be used to send a BMIC command. Do some
2459 * of the common setup here to avoid duplicating it everywhere else.
2460 */
2461 static int
ciss_get_bmic_request(struct ciss_softc * sc,struct ciss_request ** crp,int opcode,void ** bufp,size_t bufsize)2462 ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
2463 int opcode, void **bufp, size_t bufsize)
2464 {
2465 struct ciss_request *cr;
2466 struct ciss_command *cc;
2467 struct ciss_bmic_cdb *cbc;
2468 void *buf;
2469 int error;
2470 int dataout;
2471
2472 debug_called(2);
2473
2474 *crp = NULL; /* avoid gcc warnings */
2475 cr = NULL;
2476 buf = NULL;
2477
2478 /*
2479 * Get a request.
2480 */
2481 if ((error = ciss_get_request(sc, &cr)) != 0)
2482 goto out;
2483
2484 /*
2485 * Allocate data storage if requested, determine the data direction.
2486 */
2487 dataout = 0;
2488 if ((bufsize > 0) && (bufp != NULL)) {
2489 if (*bufp == NULL) {
2490 buf = kmalloc(bufsize, CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
2491 } else {
2492 buf = *bufp;
2493 dataout = 1; /* we are given a buffer, so we are writing */
2494 }
2495 }
2496
2497 /*
2498 * Build a CISS BMIC command to get the logical drive ID.
2499 */
2500 cr->cr_data = buf;
2501 cr->cr_length = bufsize;
2502 if (!dataout)
2503 cr->cr_flags = CISS_REQ_DATAIN;
2504
2505 cc = cr->cr_cc;
2506 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
2507 cc->header.address.physical.bus = 0;
2508 cc->header.address.physical.target = 0;
2509 cc->cdb.cdb_length = sizeof(*cbc);
2510 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2511 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2512 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ;
2513 cc->cdb.timeout = 0;
2514
2515 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
2516 bzero(cbc, sizeof(*cbc));
2517 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ;
2518 cbc->bmic_opcode = opcode;
2519 cbc->size = htons((u_int16_t)bufsize);
2520
2521 out:
2522 if (error) {
2523 if (cr != NULL)
2524 ciss_release_request(cr);
2525 } else {
2526 *crp = cr;
2527 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
2528 *bufp = buf;
2529 }
2530 return(error);
2531 }
2532
2533 /************************************************************************
2534 * Handle a command passed in from userspace.
2535 */
2536 static int
ciss_user_command(struct ciss_softc * sc,IOCTL_Command_struct * ioc)2537 ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc)
2538 {
2539 struct ciss_request *cr;
2540 struct ciss_command *cc;
2541 struct ciss_error_info *ce;
2542 int error = 0;
2543
2544 debug_called(1);
2545
2546 cr = NULL;
2547
2548 /*
2549 * Get a request.
2550 */
2551 while (ciss_get_request(sc, &cr) != 0)
2552 lksleep(sc, &sc->ciss_lock, 0, "cissREQ", hz);
2553 cc = cr->cr_cc;
2554
2555 /*
2556 * Allocate an in-kernel databuffer if required, copy in user data.
2557 */
2558 lockmgr(&sc->ciss_lock, LK_RELEASE);
2559 cr->cr_length = ioc->buf_size;
2560 if (ioc->buf_size > 0) {
2561 cr->cr_data = kmalloc(ioc->buf_size, CISS_MALLOC_CLASS, M_WAITOK);
2562 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) {
2563 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2564 goto out_unlocked;
2565 }
2566 }
2567
2568 /*
2569 * Build the request based on the user command.
2570 */
2571 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address));
2572 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb));
2573
2574 /* XXX anything else to populate here? */
2575 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
2576
2577 /*
2578 * Run the command.
2579 */
2580 if ((error = ciss_synch_request(cr, 60 * 1000))) {
2581 debug(0, "request failed - %d", error);
2582 goto out;
2583 }
2584
2585 /*
2586 * Check to see if the command succeeded.
2587 */
2588 ce = (struct ciss_error_info *)&(cc->sg[0]);
2589 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0)
2590 bzero(ce, sizeof(*ce));
2591
2592 /*
2593 * Copy the results back to the user.
2594 */
2595 bcopy(ce, &ioc->error_info, sizeof(*ce));
2596 lockmgr(&sc->ciss_lock, LK_RELEASE);
2597 if ((ioc->buf_size > 0) &&
2598 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) {
2599 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2600 goto out_unlocked;
2601 }
2602
2603 /* done OK */
2604 error = 0;
2605
2606 out_unlocked:
2607 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
2608
2609 out:
2610 if ((cr != NULL) && (cr->cr_data != NULL))
2611 kfree(cr->cr_data, CISS_MALLOC_CLASS);
2612 if (cr != NULL)
2613 ciss_release_request(cr);
2614 return(error);
2615 }
2616
2617 /************************************************************************
2618 * Map a request into bus-visible space, initialise the scatter/gather
2619 * list.
2620 */
2621 static int
ciss_map_request(struct ciss_request * cr)2622 ciss_map_request(struct ciss_request *cr)
2623 {
2624 struct ciss_softc *sc;
2625 int error = 0;
2626
2627 debug_called(2);
2628
2629 sc = cr->cr_sc;
2630
2631 /* check that mapping is necessary */
2632 if (cr->cr_flags & CISS_REQ_MAPPED)
2633 return(0);
2634
2635 cr->cr_flags |= CISS_REQ_MAPPED;
2636
2637 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2638 BUS_DMASYNC_PREWRITE);
2639
2640 if (cr->cr_data != NULL) {
2641 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap,
2642 cr->cr_data, cr->cr_length,
2643 ciss_request_map_helper, cr, 0);
2644 if (error != 0)
2645 return (error);
2646 } else {
2647 /*
2648 * Post the command to the adapter.
2649 */
2650 cr->cr_sg_tag = CISS_SG_NONE;
2651 cr->cr_flags |= CISS_REQ_BUSY;
2652 if (sc->ciss_perf)
2653 CISS_TL_PERF_POST_CMD(sc, cr);
2654 else
2655 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2656 }
2657
2658 return(0);
2659 }
2660
2661 static void
ciss_request_map_helper(void * arg,bus_dma_segment_t * segs,int nseg,int error)2662 ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2663 {
2664 struct ciss_command *cc;
2665 struct ciss_request *cr;
2666 struct ciss_softc *sc;
2667 int i;
2668
2669 debug_called(2);
2670
2671 cr = (struct ciss_request *)arg;
2672 sc = cr->cr_sc;
2673 cc = cr->cr_cc;
2674
2675 for (i = 0; i < nseg; i++) {
2676 cc->sg[i].address = segs[i].ds_addr;
2677 cc->sg[i].length = segs[i].ds_len;
2678 cc->sg[i].extension = 0;
2679 }
2680 /* we leave the s/g table entirely within the command */
2681 cc->header.sg_in_list = nseg;
2682 cc->header.sg_total = nseg;
2683
2684 if (cr->cr_flags & CISS_REQ_DATAIN)
2685 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD);
2686 if (cr->cr_flags & CISS_REQ_DATAOUT)
2687 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE);
2688
2689 if (nseg == 0)
2690 cr->cr_sg_tag = CISS_SG_NONE;
2691 else if (nseg == 1)
2692 cr->cr_sg_tag = CISS_SG_1;
2693 else if (nseg == 2)
2694 cr->cr_sg_tag = CISS_SG_2;
2695 else if (nseg <= 4)
2696 cr->cr_sg_tag = CISS_SG_4;
2697 else if (nseg <= 8)
2698 cr->cr_sg_tag = CISS_SG_8;
2699 else if (nseg <= 16)
2700 cr->cr_sg_tag = CISS_SG_16;
2701 else if (nseg <= 32)
2702 cr->cr_sg_tag = CISS_SG_32;
2703 else
2704 cr->cr_sg_tag = CISS_SG_MAX;
2705
2706 /*
2707 * Post the command to the adapter.
2708 */
2709 cr->cr_flags |= CISS_REQ_BUSY;
2710 if (sc->ciss_perf)
2711 CISS_TL_PERF_POST_CMD(sc, cr);
2712 else
2713 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2714 }
2715
2716 /************************************************************************
2717 * Unmap a request from bus-visible space.
2718 */
2719 static void
ciss_unmap_request(struct ciss_request * cr)2720 ciss_unmap_request(struct ciss_request *cr)
2721 {
2722 struct ciss_softc *sc;
2723
2724 debug_called(2);
2725
2726 sc = cr->cr_sc;
2727
2728 /* check that unmapping is necessary */
2729 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0)
2730 return;
2731
2732 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2733 BUS_DMASYNC_POSTWRITE);
2734
2735 if (cr->cr_data == NULL)
2736 goto out;
2737
2738 if (cr->cr_flags & CISS_REQ_DATAIN)
2739 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD);
2740 if (cr->cr_flags & CISS_REQ_DATAOUT)
2741 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE);
2742
2743 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap);
2744 out:
2745 cr->cr_flags &= ~CISS_REQ_MAPPED;
2746 }
2747
2748 /************************************************************************
2749 * Attach the driver to CAM.
2750 *
2751 * We put all the logical drives on a single SCSI bus.
2752 */
2753 static int
ciss_cam_init(struct ciss_softc * sc)2754 ciss_cam_init(struct ciss_softc *sc)
2755 {
2756 int i, maxbus;
2757
2758 debug_called(1);
2759
2760 /*
2761 * Allocate a devq. We can reuse this for the masked physical
2762 * devices if we decide to export these as well.
2763 */
2764 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests - 2)) == NULL) {
2765 ciss_printf(sc, "can't allocate CAM SIM queue\n");
2766 return(ENOMEM);
2767 }
2768
2769 /*
2770 * Create a SIM.
2771 *
2772 * This naturally wastes a bit of memory. The alternative is to allocate
2773 * and register each bus as it is found, and then track them on a linked
2774 * list. Unfortunately, the driver has a few places where it needs to
2775 * look up the SIM based solely on bus number, and it's unclear whether
2776 * a list traversal would work for these situations.
2777 */
2778 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus +
2779 CISS_PHYSICAL_BASE);
2780 sc->ciss_cam_sim = kmalloc(maxbus * sizeof(struct cam_sim*),
2781 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
2782
2783 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2784 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2785 "ciss", sc,
2786 device_get_unit(sc->ciss_dev),
2787 &sc->ciss_lock,
2788 2,
2789 sc->ciss_max_requests - 2,
2790 sc->ciss_cam_devq)) == NULL) {
2791 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2792 return(ENOMEM);
2793 }
2794
2795 /*
2796 * Register bus with this SIM.
2797 */
2798 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
2799 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) {
2800 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) {
2801 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2802 lockmgr(&sc->ciss_lock, LK_RELEASE);
2803 return (ENXIO);
2804 }
2805 }
2806 lockmgr(&sc->ciss_lock, LK_RELEASE);
2807 }
2808
2809 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2810 CISS_PHYSICAL_BASE; i++) {
2811 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2812 "ciss", sc,
2813 device_get_unit(sc->ciss_dev),
2814 &sc->ciss_lock, 1,
2815 sc->ciss_max_requests - 2,
2816 sc->ciss_cam_devq)) == NULL) {
2817 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2818 return (ENOMEM);
2819 }
2820
2821 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
2822 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) {
2823 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2824 lockmgr(&sc->ciss_lock, LK_RELEASE);
2825 return (ENXIO);
2826 }
2827 lockmgr(&sc->ciss_lock, LK_RELEASE);
2828 }
2829
2830 /*
2831 * Initiate a rescan of the bus.
2832 */
2833 ciss_cam_rescan_all(sc);
2834
2835 return(0);
2836 }
2837
2838 /************************************************************************
2839 * Initiate a rescan of the 'logical devices' SIM
2840 */
2841 static void
ciss_cam_rescan_target(struct ciss_softc * sc,int bus,int target)2842 ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target)
2843 {
2844 union ccb *ccb;
2845
2846 debug_called(1);
2847
2848 ccb = xpt_alloc_ccb();
2849
2850 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
2851 cam_sim_path(sc->ciss_cam_sim[bus]),
2852 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
2853 ciss_printf(sc, "rescan failed (can't create path)\n");
2854 xpt_free_ccb(&ccb->ccb_h);
2855 return;
2856 }
2857
2858 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 5/*priority (low)*/);
2859 ccb->ccb_h.func_code = XPT_SCAN_BUS;
2860 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback;
2861 ccb->crcn.flags = CAM_FLAG_NONE;
2862 xpt_action(ccb);
2863
2864 /* scan is now in progress */
2865 }
2866
2867 static void
ciss_cam_rescan_all(struct ciss_softc * sc)2868 ciss_cam_rescan_all(struct ciss_softc *sc)
2869 {
2870 int i;
2871
2872 /* Rescan the logical buses */
2873 for (i = 0; i < sc->ciss_max_logical_bus; i++)
2874 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
2875 /* Rescan the physical buses */
2876 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2877 CISS_PHYSICAL_BASE; i++)
2878 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
2879 }
2880
2881 static void
ciss_cam_rescan_callback(struct cam_periph * periph,union ccb * ccb)2882 ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
2883 {
2884 xpt_free_path(ccb->ccb_h.path);
2885 xpt_free_ccb(&ccb->ccb_h);
2886 }
2887
2888 /************************************************************************
2889 * Handle requests coming from CAM
2890 */
2891 static void
ciss_cam_action(struct cam_sim * sim,union ccb * ccb)2892 ciss_cam_action(struct cam_sim *sim, union ccb *ccb)
2893 {
2894 struct ciss_softc *sc;
2895 struct ccb_scsiio *csio;
2896 int bus, target;
2897 int physical;
2898
2899 sc = cam_sim_softc(sim);
2900 bus = cam_sim_bus(sim);
2901 csio = (struct ccb_scsiio *)&ccb->csio;
2902 target = csio->ccb_h.target_id;
2903 physical = CISS_IS_PHYSICAL(bus);
2904
2905 switch (ccb->ccb_h.func_code) {
2906
2907 /* perform SCSI I/O */
2908 case XPT_SCSI_IO:
2909 if (!ciss_cam_action_io(sim, csio))
2910 return;
2911 break;
2912
2913 /* perform geometry calculations */
2914 case XPT_CALC_GEOMETRY:
2915 {
2916 struct ccb_calc_geometry *ccg = &ccb->ccg;
2917 struct ciss_ldrive *ld;
2918
2919 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2920
2921 ld = NULL;
2922 if (!physical)
2923 ld = &sc->ciss_logical[bus][target];
2924
2925 /*
2926 * Use the cached geometry settings unless the fault tolerance
2927 * is invalid.
2928 */
2929 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) {
2930 u_int32_t secs_per_cylinder;
2931
2932 ccg->heads = 255;
2933 ccg->secs_per_track = 32;
2934 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2935 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2936 } else {
2937 ccg->heads = ld->cl_geometry.heads;
2938 ccg->secs_per_track = ld->cl_geometry.sectors;
2939 ccg->cylinders = ntohs(ld->cl_geometry.cylinders);
2940 }
2941 ccb->ccb_h.status = CAM_REQ_CMP;
2942 break;
2943 }
2944
2945 /* handle path attribute inquiry */
2946 case XPT_PATH_INQ:
2947 {
2948 struct ccb_pathinq *cpi = &ccb->cpi;
2949
2950 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2951
2952 cpi->version_num = 1;
2953 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */
2954 cpi->target_sprt = 0;
2955 cpi->hba_misc = 0;
2956 cpi->max_target = CISS_MAX_LOGICAL;
2957 cpi->max_lun = 0; /* 'logical drive' channel only */
2958 cpi->initiator_id = CISS_MAX_LOGICAL;
2959 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2960 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN);
2961 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2962 cpi->unit_number = cam_sim_unit(sim);
2963 cpi->bus_id = cam_sim_bus(sim);
2964 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
2965 cpi->transport = XPORT_SPI;
2966 cpi->transport_version = 2;
2967 cpi->protocol = PROTO_SCSI;
2968 cpi->protocol_version = SCSI_REV_2;
2969 #if 0 /* XXX swildner */
2970 cpi->maxio = (CISS_MAX_SG_ELEMENTS - 1) * PAGE_SIZE;
2971 #endif
2972 ccb->ccb_h.status = CAM_REQ_CMP;
2973 break;
2974 }
2975
2976 case XPT_GET_TRAN_SETTINGS:
2977 {
2978 struct ccb_trans_settings *cts = &ccb->cts;
2979 #ifdef CISS_DEBUG
2980 int bus, target;
2981 #endif
2982 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
2983 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
2984
2985 #ifdef CISS_DEBUG
2986 bus = cam_sim_bus(sim);
2987 target = cts->ccb_h.target_id;
2988 #endif
2989
2990 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
2991 /* disconnect always OK */
2992 cts->protocol = PROTO_SCSI;
2993 cts->protocol_version = SCSI_REV_2;
2994 cts->transport = XPORT_SPI;
2995 cts->transport_version = 2;
2996
2997 spi->valid = CTS_SPI_VALID_DISC;
2998 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
2999
3000 scsi->valid = CTS_SCSI_VALID_TQ;
3001 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
3002
3003 cts->ccb_h.status = CAM_REQ_CMP;
3004 break;
3005 }
3006
3007 default: /* we can't do this */
3008 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
3009 ccb->ccb_h.status = CAM_REQ_INVALID;
3010 break;
3011 }
3012
3013 xpt_done(ccb);
3014 }
3015
3016 /************************************************************************
3017 * Handle a CAM SCSI I/O request.
3018 */
3019 static int
ciss_cam_action_io(struct cam_sim * sim,struct ccb_scsiio * csio)3020 ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
3021 {
3022 struct ciss_softc *sc;
3023 int bus, target;
3024 struct ciss_request *cr;
3025 struct ciss_command *cc;
3026 int error;
3027
3028 sc = cam_sim_softc(sim);
3029 bus = cam_sim_bus(sim);
3030 target = csio->ccb_h.target_id;
3031
3032 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
3033
3034 /* check that the CDB pointer is not to a physical address */
3035 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
3036 debug(3, " CDB pointer is to physical address");
3037 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3038 }
3039
3040 /* if there is data transfer, it must be to/from a virtual address */
3041 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
3042 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */
3043 debug(3, " data pointer is to physical address");
3044 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3045 }
3046 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */
3047 debug(3, " data has premature s/g setup");
3048 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3049 }
3050 }
3051
3052 /* abandon aborted ccbs or those that have failed validation */
3053 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
3054 debug(3, "abandoning CCB due to abort/validation failure");
3055 return(EINVAL);
3056 }
3057
3058 /* handle emulation of some SCSI commands ourself */
3059 if (ciss_cam_emulate(sc, csio))
3060 return(0);
3061
3062 /*
3063 * Get a request to manage this command. If we can't, return the
3064 * ccb, freeze the queue and flag so that we unfreeze it when a
3065 * request completes.
3066 */
3067 if ((error = ciss_get_request(sc, &cr)) != 0) {
3068 xpt_freeze_simq(sim, 1);
3069 sc->ciss_flags |= CISS_FLAG_BUSY;
3070 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3071 return(error);
3072 }
3073
3074 /*
3075 * Build the command.
3076 */
3077 cc = cr->cr_cc;
3078 cr->cr_data = csio->data_ptr;
3079 cr->cr_length = csio->dxfer_len;
3080 cr->cr_complete = ciss_cam_complete;
3081 cr->cr_private = csio;
3082
3083 /*
3084 * Target the right logical volume.
3085 */
3086 if (CISS_IS_PHYSICAL(bus))
3087 cc->header.address =
3088 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address;
3089 else
3090 cc->header.address =
3091 sc->ciss_logical[bus][target].cl_address;
3092 cc->cdb.cdb_length = csio->cdb_len;
3093 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3094 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */
3095 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
3096 cr->cr_flags = CISS_REQ_DATAOUT;
3097 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3098 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
3099 cr->cr_flags = CISS_REQ_DATAIN;
3100 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3101 } else {
3102 cr->cr_flags = 0;
3103 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
3104 }
3105 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1;
3106 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
3107 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len);
3108 } else {
3109 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len);
3110 }
3111
3112 /*
3113 * Submit the request to the adapter.
3114 *
3115 * Note that this may fail if we're unable to map the request (and
3116 * if we ever learn a transport layer other than simple, may fail
3117 * if the adapter rejects the command).
3118 */
3119 if ((error = ciss_start(cr)) != 0) {
3120 xpt_freeze_simq(sim, 1);
3121 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3122 if (error == EINPROGRESS) {
3123 error = 0;
3124 } else {
3125 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3126 ciss_release_request(cr);
3127 }
3128 return(error);
3129 }
3130
3131 return(0);
3132 }
3133
3134 /************************************************************************
3135 * Emulate SCSI commands the adapter doesn't handle as we might like.
3136 */
3137 static int
ciss_cam_emulate(struct ciss_softc * sc,struct ccb_scsiio * csio)3138 ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio)
3139 {
3140 int bus, target;
3141
3142 target = csio->ccb_h.target_id;
3143 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3144
3145 if (CISS_IS_PHYSICAL(bus)) {
3146 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) {
3147 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3148 xpt_done((union ccb *)csio);
3149 return(1);
3150 } else
3151 return(0);
3152 }
3153
3154 /*
3155 * Handle requests for volumes that don't exist or are not online.
3156 * A selection timeout is slightly better than an illegal request.
3157 * Other errors might be better.
3158 */
3159 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) {
3160 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3161 xpt_done((union ccb *)csio);
3162 return(1);
3163 }
3164
3165 /* if we have to fake Synchronise Cache */
3166 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) {
3167 /*
3168 * If this is a Synchronise Cache command, typically issued when
3169 * a device is closed, flush the adapter and complete now.
3170 */
3171 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3172 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) {
3173 ciss_flush_adapter(sc);
3174 csio->ccb_h.status |= CAM_REQ_CMP;
3175 xpt_done((union ccb *)csio);
3176 return(1);
3177 }
3178 }
3179
3180 return(0);
3181 }
3182
3183 /************************************************************************
3184 * Check for possibly-completed commands.
3185 */
3186 static void
ciss_cam_poll(struct cam_sim * sim)3187 ciss_cam_poll(struct cam_sim *sim)
3188 {
3189 cr_qhead_t qh;
3190 struct ciss_softc *sc = cam_sim_softc(sim);
3191
3192 debug_called(2);
3193
3194 STAILQ_INIT(&qh);
3195 if (sc->ciss_perf)
3196 ciss_perf_done(sc, &qh);
3197 else
3198 ciss_done(sc, &qh);
3199 ciss_complete(sc, &qh);
3200 }
3201
3202 /************************************************************************
3203 * Handle completion of a command - pass results back through the CCB
3204 */
3205 static void
ciss_cam_complete(struct ciss_request * cr)3206 ciss_cam_complete(struct ciss_request *cr)
3207 {
3208 struct ciss_softc *sc;
3209 struct ciss_command *cc;
3210 struct ciss_error_info *ce;
3211 struct ccb_scsiio *csio;
3212 int scsi_status;
3213 int command_status;
3214
3215 debug_called(2);
3216
3217 sc = cr->cr_sc;
3218 cc = cr->cr_cc;
3219 ce = (struct ciss_error_info *)&(cc->sg[0]);
3220 csio = (struct ccb_scsiio *)cr->cr_private;
3221
3222 /*
3223 * Extract status values from request.
3224 */
3225 ciss_report_request(cr, &command_status, &scsi_status);
3226 csio->scsi_status = scsi_status;
3227
3228 /*
3229 * Handle specific SCSI status values.
3230 */
3231 switch(scsi_status) {
3232 /* no status due to adapter error */
3233 case -1:
3234 debug(0, "adapter error");
3235 csio->ccb_h.status |= CAM_REQ_CMP_ERR;
3236 break;
3237
3238 /* no status due to command completed OK */
3239 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */
3240 debug(2, "SCSI_STATUS_OK");
3241 csio->ccb_h.status |= CAM_REQ_CMP;
3242 break;
3243
3244 /* check condition, sense data included */
3245 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */
3246 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n",
3247 ce->sense_length, ce->residual_count);
3248 bzero(&csio->sense_data, SSD_FULL_SIZE);
3249 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length);
3250 if (csio->sense_len > ce->sense_length)
3251 csio->sense_resid = csio->sense_len - ce->sense_length;
3252 else
3253 csio->sense_resid = 0;
3254 csio->resid = ce->residual_count;
3255 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
3256 #ifdef CISS_DEBUG
3257 {
3258 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0];
3259 debug(0, "sense key %x", sns->flags & SSD_KEY);
3260 }
3261 #endif
3262 break;
3263
3264 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */
3265 debug(0, "SCSI_STATUS_BUSY");
3266 csio->ccb_h.status |= CAM_SCSI_BUSY;
3267 break;
3268
3269 default:
3270 debug(0, "unknown status 0x%x", csio->scsi_status);
3271 csio->ccb_h.status |= CAM_REQ_CMP_ERR;
3272 break;
3273 }
3274
3275 /* handle post-command fixup */
3276 ciss_cam_complete_fixup(sc, csio);
3277
3278 ciss_release_request(cr);
3279 if (sc->ciss_flags & CISS_FLAG_BUSY) {
3280 sc->ciss_flags &= ~CISS_FLAG_BUSY;
3281 if (csio->ccb_h.status & CAM_RELEASE_SIMQ)
3282 xpt_release_simq(xpt_path_sim(csio->ccb_h.path), 0);
3283 else
3284 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3285 }
3286 xpt_done((union ccb *)csio);
3287 }
3288
3289 /********************************************************************************
3290 * Fix up the result of some commands here.
3291 */
3292 static void
ciss_cam_complete_fixup(struct ciss_softc * sc,struct ccb_scsiio * csio)3293 ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio)
3294 {
3295 struct scsi_inquiry_data *inq;
3296 struct ciss_ldrive *cl;
3297 uint8_t *cdb;
3298 int bus, target;
3299
3300 cdb = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3301 (uint8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes;
3302 if (cdb[0] == INQUIRY &&
3303 (cdb[1] & SI_EVPD) == 0 &&
3304 (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
3305 csio->dxfer_len >= SHORT_INQUIRY_LENGTH) {
3306
3307 inq = (struct scsi_inquiry_data *)csio->data_ptr;
3308 target = csio->ccb_h.target_id;
3309 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3310
3311 /*
3312 * Don't let hard drives be seen by the DA driver. They will still be
3313 * attached by the PASS driver.
3314 */
3315 if (CISS_IS_PHYSICAL(bus)) {
3316 if (SID_TYPE(inq) == T_DIRECT)
3317 inq->device = (inq->device & 0xe0) | T_NODEVICE;
3318 return;
3319 }
3320
3321 cl = &sc->ciss_logical[bus][target];
3322
3323 padstr(inq->vendor, "COMPAQ", 8);
3324 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8);
3325 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16);
3326 }
3327 }
3328
3329
3330 /********************************************************************************
3331 * Find a peripheral attached at (target)
3332 */
3333 static struct cam_periph *
ciss_find_periph(struct ciss_softc * sc,int bus,int target)3334 ciss_find_periph(struct ciss_softc *sc, int bus, int target)
3335 {
3336 struct cam_periph *periph;
3337 struct cam_path *path;
3338 int status;
3339
3340 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]),
3341 target, 0);
3342 if (status == CAM_REQ_CMP) {
3343 periph = cam_periph_find(path, NULL);
3344 xpt_free_path(path);
3345 } else {
3346 periph = NULL;
3347 }
3348 return(periph);
3349 }
3350
3351 /********************************************************************************
3352 * Name the device at (target)
3353 *
3354 * XXX is this strictly correct?
3355 */
3356 static int
ciss_name_device(struct ciss_softc * sc,int bus,int target)3357 ciss_name_device(struct ciss_softc *sc, int bus, int target)
3358 {
3359 struct cam_periph *periph;
3360
3361 if (CISS_IS_PHYSICAL(bus))
3362 return (0);
3363 if ((periph = ciss_find_periph(sc, bus, target)) != NULL) {
3364 ksprintf(sc->ciss_logical[bus][target].cl_name, "%s%d",
3365 periph->periph_name, periph->unit_number);
3366 return(0);
3367 }
3368 sc->ciss_logical[bus][target].cl_name[0] = 0;
3369 return(ENOENT);
3370 }
3371
3372 /************************************************************************
3373 * Periodic status monitoring.
3374 */
3375 static void
ciss_periodic(void * arg)3376 ciss_periodic(void *arg)
3377 {
3378 struct ciss_softc *sc = (struct ciss_softc *)arg;
3379 struct ciss_request *cr = NULL;
3380 struct ciss_command *cc = NULL;
3381 int error = 0;
3382
3383 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
3384 debug_called(1);
3385
3386 /*
3387 * Check the adapter heartbeat.
3388 */
3389 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) {
3390 sc->ciss_heart_attack++;
3391 debug(0, "adapter heart attack in progress 0x%x/%d",
3392 sc->ciss_heartbeat, sc->ciss_heart_attack);
3393 if (sc->ciss_heart_attack == 3) {
3394 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n");
3395 ciss_disable_adapter(sc);
3396 lockmgr(&sc->ciss_lock, LK_RELEASE);
3397 return;
3398 }
3399 } else {
3400 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat;
3401 sc->ciss_heart_attack = 0;
3402 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat);
3403 }
3404
3405 /*
3406 * Send the NOP message and wait for a response.
3407 */
3408 if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) {
3409 cc = cr->cr_cc;
3410 cr->cr_complete = ciss_nop_complete;
3411 cc->cdb.cdb_length = 1;
3412 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
3413 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3414 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3415 cc->cdb.timeout = 0;
3416 cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP;
3417
3418 if ((error = ciss_start(cr)) != 0) {
3419 ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n");
3420 }
3421 }
3422
3423 /*
3424 * If the notify event request has died for some reason, or has
3425 * not started yet, restart it.
3426 */
3427 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) {
3428 debug(0, "(re)starting Event Notify chain");
3429 ciss_notify_event(sc);
3430 }
3431 lockmgr(&sc->ciss_lock, LK_RELEASE);
3432
3433 /*
3434 * Reschedule.
3435 */
3436 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc);
3437 }
3438
3439 static void
ciss_nop_complete(struct ciss_request * cr)3440 ciss_nop_complete(struct ciss_request *cr)
3441 {
3442 struct ciss_softc *sc;
3443 static int first_time = 1;
3444
3445 sc = cr->cr_sc;
3446 if (ciss_report_request(cr, NULL, NULL) != 0) {
3447 if (first_time == 1) {
3448 first_time = 0;
3449 ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n");
3450 }
3451 }
3452
3453 ciss_release_request(cr);
3454 }
3455
3456 /************************************************************************
3457 * Disable the adapter.
3458 *
3459 * The all requests in completed queue is failed with hardware error.
3460 * This will cause failover in a multipath configuration.
3461 */
3462 static void
ciss_disable_adapter(struct ciss_softc * sc)3463 ciss_disable_adapter(struct ciss_softc *sc)
3464 {
3465 cr_qhead_t qh;
3466 struct ciss_request *cr;
3467 struct ciss_command *cc;
3468 struct ciss_error_info *ce;
3469 int i;
3470
3471 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
3472 pci_disable_busmaster(sc->ciss_dev);
3473 sc->ciss_flags &= ~CISS_FLAG_RUNNING;
3474
3475 for (i = 1; i < sc->ciss_max_requests; i++) {
3476 cr = &sc->ciss_request[i];
3477 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
3478 continue;
3479
3480 cc = cr->cr_cc;
3481 ce = (struct ciss_error_info *)&(cc->sg[0]);
3482 ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR;
3483 ciss_enqueue_complete(cr, &qh);
3484 }
3485
3486 for (;;) {
3487 if ((cr = ciss_dequeue_complete(sc, &qh)) == NULL)
3488 break;
3489
3490 /*
3491 * If the request has a callback, invoke it.
3492 */
3493 if (cr->cr_complete != NULL) {
3494 cr->cr_complete(cr);
3495 continue;
3496 }
3497
3498 /*
3499 * If someone is sleeping on this request, wake them up.
3500 */
3501 if (cr->cr_flags & CISS_REQ_SLEEP) {
3502 cr->cr_flags &= ~CISS_REQ_SLEEP;
3503 wakeup(cr);
3504 continue;
3505 }
3506 }
3507 }
3508
3509 /************************************************************************
3510 * Request a notification response from the adapter.
3511 *
3512 * If (cr) is NULL, this is the first request of the adapter, so
3513 * reset the adapter's message pointer and start with the oldest
3514 * message available.
3515 */
3516 static void
ciss_notify_event(struct ciss_softc * sc)3517 ciss_notify_event(struct ciss_softc *sc)
3518 {
3519 struct ciss_request *cr;
3520 struct ciss_command *cc;
3521 struct ciss_notify_cdb *cnc;
3522 int error;
3523
3524 debug_called(1);
3525
3526 cr = sc->ciss_periodic_notify;
3527
3528 /* get a request if we don't already have one */
3529 if (cr == NULL) {
3530 if ((error = ciss_get_request(sc, &cr)) != 0) {
3531 debug(0, "can't get notify event request");
3532 goto out;
3533 }
3534 sc->ciss_periodic_notify = cr;
3535 cr->cr_complete = ciss_notify_complete;
3536 debug(1, "acquired request %d", cr->cr_tag);
3537 }
3538
3539 /*
3540 * Get a databuffer if we don't already have one, note that the
3541 * adapter command wants a larger buffer than the actual
3542 * structure.
3543 */
3544 if (cr->cr_data == NULL) {
3545 cr->cr_data = kmalloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_INTWAIT);
3546 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3547 }
3548
3549 /* re-setup the request's command (since we never release it) XXX overkill*/
3550 ciss_preen_command(cr);
3551
3552 /* (re)build the notify event command */
3553 cc = cr->cr_cc;
3554 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3555 cc->header.address.physical.bus = 0;
3556 cc->header.address.physical.target = 0;
3557
3558 cc->cdb.cdb_length = sizeof(*cnc);
3559 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3560 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3561 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3562 cc->cdb.timeout = 0; /* no timeout, we hope */
3563
3564 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3565 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE);
3566 cnc->opcode = CISS_OPCODE_READ;
3567 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT;
3568 cnc->timeout = 0; /* no timeout, we hope */
3569 cnc->synchronous = 0;
3570 cnc->ordered = 0;
3571 cnc->seek_to_oldest = 0;
3572 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0)
3573 cnc->new_only = 1;
3574 else
3575 cnc->new_only = 0;
3576 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3577
3578 /* submit the request */
3579 error = ciss_start(cr);
3580
3581 out:
3582 if (error) {
3583 if (cr != NULL) {
3584 if (cr->cr_data != NULL)
3585 kfree(cr->cr_data, CISS_MALLOC_CLASS);
3586 ciss_release_request(cr);
3587 }
3588 sc->ciss_periodic_notify = NULL;
3589 debug(0, "can't submit notify event request");
3590 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3591 } else {
3592 debug(1, "notify event submitted");
3593 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK;
3594 }
3595 }
3596
3597 static void
ciss_notify_complete(struct ciss_request * cr)3598 ciss_notify_complete(struct ciss_request *cr)
3599 {
3600 struct ciss_notify *cn;
3601 struct ciss_softc *sc;
3602 int scsi_status;
3603 int command_status;
3604 debug_called(1);
3605
3606 cn = (struct ciss_notify *)cr->cr_data;
3607 sc = cr->cr_sc;
3608
3609 /*
3610 * Report request results, decode status.
3611 */
3612 ciss_report_request(cr, &command_status, &scsi_status);
3613
3614 /*
3615 * Abort the chain on a fatal error.
3616 *
3617 * XXX which of these are actually errors?
3618 */
3619 if ((command_status != CISS_CMD_STATUS_SUCCESS) &&
3620 (command_status != CISS_CMD_STATUS_TARGET_STATUS) &&
3621 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */
3622 ciss_printf(sc, "fatal error in Notify Event request (%s)\n",
3623 ciss_name_command_status(command_status));
3624 ciss_release_request(cr);
3625 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3626 return;
3627 }
3628
3629 /*
3630 * If the adapter gave us a text message, print it.
3631 */
3632 if (cn->message[0] != 0)
3633 ciss_printf(sc, "*** %.80s\n", cn->message);
3634
3635 debug(0, "notify event class %d subclass %d detail %d",
3636 cn->class, cn->subclass, cn->detail);
3637
3638 /*
3639 * If the response indicates that the notifier has been aborted,
3640 * release the notifier command.
3641 */
3642 if ((cn->class == CISS_NOTIFY_NOTIFIER) &&
3643 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) &&
3644 (cn->detail == 1)) {
3645 debug(0, "notifier exiting");
3646 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3647 ciss_release_request(cr);
3648 sc->ciss_periodic_notify = NULL;
3649 wakeup(&sc->ciss_periodic_notify);
3650 } else {
3651 /* Handle notify events in a kernel thread */
3652 ciss_enqueue_notify(cr);
3653 sc->ciss_periodic_notify = NULL;
3654 wakeup(&sc->ciss_periodic_notify);
3655 wakeup(&sc->ciss_notify);
3656 }
3657 /*
3658 * Send a new notify event command, if we're not aborting.
3659 */
3660 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) {
3661 ciss_notify_event(sc);
3662 }
3663 }
3664
3665 /************************************************************************
3666 * Abort the Notify Event chain.
3667 *
3668 * Note that we can't just abort the command in progress; we have to
3669 * explicitly issue an Abort Notify Event command in order for the
3670 * adapter to clean up correctly.
3671 *
3672 * If we are called with CISS_FLAG_ABORTING set in the adapter softc,
3673 * the chain will not restart itself.
3674 */
3675 static int
ciss_notify_abort(struct ciss_softc * sc)3676 ciss_notify_abort(struct ciss_softc *sc)
3677 {
3678 struct ciss_request *cr;
3679 struct ciss_command *cc;
3680 struct ciss_notify_cdb *cnc;
3681 int error, command_status, scsi_status;
3682
3683 debug_called(1);
3684
3685 cr = NULL;
3686 error = 0;
3687
3688 /* verify that there's an outstanding command */
3689 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3690 goto out;
3691
3692 /* get a command to issue the abort with */
3693 if ((error = ciss_get_request(sc, &cr)))
3694 goto out;
3695
3696 /* get a buffer for the result */
3697 cr->cr_data = kmalloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_INTWAIT);
3698 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3699
3700 /* build the CDB */
3701 cc = cr->cr_cc;
3702 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3703 cc->header.address.physical.bus = 0;
3704 cc->header.address.physical.target = 0;
3705 cc->cdb.cdb_length = sizeof(*cnc);
3706 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3707 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3708 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3709 cc->cdb.timeout = 0; /* no timeout, we hope */
3710
3711 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3712 bzero(cnc, sizeof(*cnc));
3713 cnc->opcode = CISS_OPCODE_WRITE;
3714 cnc->command = CISS_COMMAND_ABORT_NOTIFY;
3715 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3716
3717 ciss_print_request(cr);
3718
3719 /*
3720 * Submit the request and wait for it to complete.
3721 */
3722 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3723 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error);
3724 goto out;
3725 }
3726
3727 /*
3728 * Check response.
3729 */
3730 ciss_report_request(cr, &command_status, &scsi_status);
3731 switch(command_status) {
3732 case CISS_CMD_STATUS_SUCCESS:
3733 break;
3734 case CISS_CMD_STATUS_INVALID_COMMAND:
3735 /*
3736 * Some older adapters don't support the CISS version of this
3737 * command. Fall back to using the BMIC version.
3738 */
3739 error = ciss_notify_abort_bmic(sc);
3740 if (error != 0)
3741 goto out;
3742 break;
3743
3744 case CISS_CMD_STATUS_TARGET_STATUS:
3745 /*
3746 * This can happen if the adapter thinks there wasn't an outstanding
3747 * Notify Event command but we did. We clean up here.
3748 */
3749 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) {
3750 if (sc->ciss_periodic_notify != NULL)
3751 ciss_release_request(sc->ciss_periodic_notify);
3752 error = 0;
3753 goto out;
3754 }
3755 /* FALLTHROUGH */
3756
3757 default:
3758 ciss_printf(sc, "Abort Notify Event command failed (%s)\n",
3759 ciss_name_command_status(command_status));
3760 error = EIO;
3761 goto out;
3762 }
3763
3764 /*
3765 * Sleep waiting for the notifier command to complete. Note
3766 * that if it doesn't, we may end up in a bad situation, since
3767 * the adapter may deliver it later. Also note that the adapter
3768 * requires the Notify Event command to be cancelled in order to
3769 * maintain internal bookkeeping.
3770 */
3771 while (sc->ciss_periodic_notify != NULL) {
3772 error = lksleep(&sc->ciss_periodic_notify, &sc->ciss_lock, 0, "cissNEA", hz * 5);
3773 if (error == EWOULDBLOCK) {
3774 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n");
3775 break;
3776 }
3777 }
3778
3779 out:
3780 /* release the cancel request */
3781 if (cr != NULL) {
3782 if (cr->cr_data != NULL)
3783 kfree(cr->cr_data, CISS_MALLOC_CLASS);
3784 ciss_release_request(cr);
3785 }
3786 if (error == 0)
3787 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3788 return(error);
3789 }
3790
3791 /************************************************************************
3792 * Abort the Notify Event chain using a BMIC command.
3793 */
3794 static int
ciss_notify_abort_bmic(struct ciss_softc * sc)3795 ciss_notify_abort_bmic(struct ciss_softc *sc)
3796 {
3797 struct ciss_request *cr;
3798 int error, command_status;
3799
3800 debug_called(1);
3801
3802 cr = NULL;
3803 error = 0;
3804
3805 /* verify that there's an outstanding command */
3806 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3807 goto out;
3808
3809 /*
3810 * Build a BMIC command to cancel the Notify on Event command.
3811 *
3812 * Note that we are sending a CISS opcode here. Odd.
3813 */
3814 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY,
3815 NULL, 0)) != 0)
3816 goto out;
3817
3818 /*
3819 * Submit the request and wait for it to complete.
3820 */
3821 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3822 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error);
3823 goto out;
3824 }
3825
3826 /*
3827 * Check response.
3828 */
3829 ciss_report_request(cr, &command_status, NULL);
3830 switch(command_status) {
3831 case CISS_CMD_STATUS_SUCCESS:
3832 break;
3833 default:
3834 ciss_printf(sc, "error cancelling Notify on Event (%s)\n",
3835 ciss_name_command_status(command_status));
3836 error = EIO;
3837 goto out;
3838 }
3839
3840 out:
3841 if (cr != NULL)
3842 ciss_release_request(cr);
3843 return(error);
3844 }
3845
3846 /************************************************************************
3847 * Handle rescanning all the logical volumes when a notify event
3848 * causes the drives to come online or offline.
3849 */
3850 static void
ciss_notify_rescan_logical(struct ciss_softc * sc)3851 ciss_notify_rescan_logical(struct ciss_softc *sc)
3852 {
3853 struct ciss_lun_report *cll;
3854 struct ciss_ldrive *ld;
3855 int i, j, ndrives;
3856
3857 /*
3858 * We must rescan all logical volumes to get the right logical
3859 * drive address.
3860 */
3861 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
3862 CISS_MAX_LOGICAL);
3863 if (cll == NULL)
3864 return;
3865
3866 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
3867
3868 /*
3869 * Delete any of the drives which were destroyed by the
3870 * firmware.
3871 */
3872 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
3873 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
3874 ld = &sc->ciss_logical[i][j];
3875
3876 if (ld->cl_update == 0)
3877 continue;
3878
3879 if (ld->cl_status != CISS_LD_ONLINE) {
3880 ciss_cam_rescan_target(sc, i, j);
3881 ld->cl_update = 0;
3882 if (ld->cl_ldrive)
3883 kfree(ld->cl_ldrive, CISS_MALLOC_CLASS);
3884 if (ld->cl_lstatus)
3885 kfree(ld->cl_lstatus, CISS_MALLOC_CLASS);
3886
3887 ld->cl_ldrive = NULL;
3888 ld->cl_lstatus = NULL;
3889 }
3890 }
3891 }
3892
3893 /*
3894 * Scan for new drives.
3895 */
3896 for (i = 0; i < ndrives; i++) {
3897 int bus, target;
3898
3899 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
3900 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
3901 ld = &sc->ciss_logical[bus][target];
3902
3903 if (ld->cl_update == 0)
3904 continue;
3905
3906 ld->cl_update = 0;
3907 ld->cl_address = cll->lun[i];
3908 ld->cl_controller = &sc->ciss_controllers[bus];
3909 if (ciss_identify_logical(sc, ld) == 0) {
3910 ciss_cam_rescan_target(sc, bus, target);
3911 }
3912 }
3913 kfree(cll, CISS_MALLOC_CLASS);
3914 }
3915
3916 /************************************************************************
3917 * Handle a notify event relating to the status of a logical drive.
3918 *
3919 * XXX need to be able to defer some of these to properly handle
3920 * calling the "ID Physical drive" command, unless the 'extended'
3921 * drive IDs are always in BIG_MAP format.
3922 */
3923 static void
ciss_notify_logical(struct ciss_softc * sc,struct ciss_notify * cn)3924 ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn)
3925 {
3926 struct ciss_ldrive *ld;
3927 int ostatus, bus, target;
3928
3929 debug_called(2);
3930
3931 bus = cn->device.physical.bus;
3932 target = cn->data.logical_status.logical_drive;
3933 ld = &sc->ciss_logical[bus][target];
3934
3935 switch (cn->subclass) {
3936 case CISS_NOTIFY_LOGICAL_STATUS:
3937 switch (cn->detail) {
3938 case 0:
3939 ciss_name_device(sc, bus, target);
3940 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%pb%i\n",
3941 cn->data.logical_status.logical_drive, ld->cl_name,
3942 ciss_name_ldrive_status(cn->data.logical_status.previous_state),
3943 ciss_name_ldrive_status(cn->data.logical_status.new_state),
3944 "\20\1configured\2rebuilding\3failed\4in use\5available\n",
3945 cn->data.logical_status.spare_state);
3946
3947 /*
3948 * Update our idea of the drive's status.
3949 */
3950 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state);
3951 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3952 if (ld->cl_lstatus != NULL)
3953 ld->cl_lstatus->status = cn->data.logical_status.new_state;
3954
3955 /*
3956 * Have CAM rescan the drive if its status has changed.
3957 */
3958 if (ostatus != ld->cl_status) {
3959 ld->cl_update = 1;
3960 ciss_notify_rescan_logical(sc);
3961 }
3962
3963 break;
3964
3965 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */
3966 ciss_name_device(sc, bus, target);
3967 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n",
3968 cn->data.logical_status.logical_drive, ld->cl_name);
3969 ciss_accept_media(sc, ld);
3970
3971 ld->cl_update = 1;
3972 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3973 ciss_notify_rescan_logical(sc);
3974 break;
3975
3976 case 2:
3977 case 3:
3978 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n",
3979 cn->data.rebuild_aborted.logical_drive,
3980 ld->cl_name,
3981 (cn->detail == 2) ? "read" : "write");
3982 break;
3983 }
3984 break;
3985
3986 case CISS_NOTIFY_LOGICAL_ERROR:
3987 if (cn->detail == 0) {
3988 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n",
3989 cn->data.io_error.logical_drive,
3990 ld->cl_name,
3991 cn->data.io_error.failure_bus,
3992 cn->data.io_error.failure_drive);
3993 /* XXX should we take the drive down at this point, or will we be told? */
3994 }
3995 break;
3996
3997 case CISS_NOTIFY_LOGICAL_SURFACE:
3998 if (cn->detail == 0)
3999 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n",
4000 cn->data.consistency_completed.logical_drive,
4001 ld->cl_name);
4002 break;
4003 }
4004 }
4005
4006 /************************************************************************
4007 * Handle a notify event relating to the status of a physical drive.
4008 */
4009 static void
ciss_notify_physical(struct ciss_softc * sc,struct ciss_notify * cn)4010 ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn)
4011 {
4012 }
4013
4014 /************************************************************************
4015 * Handle a notify event relating to the status of a physical drive.
4016 */
4017 static void
ciss_notify_hotplug(struct ciss_softc * sc,struct ciss_notify * cn)4018 ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn)
4019 {
4020 struct ciss_lun_report *cll = NULL;
4021 int bus, target;
4022
4023 switch (cn->subclass) {
4024 case CISS_NOTIFY_HOTPLUG_PHYSICAL:
4025 case CISS_NOTIFY_HOTPLUG_NONDISK:
4026 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number);
4027 target =
4028 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number);
4029
4030 if (cn->detail == 0) {
4031 /*
4032 * Mark the device offline so that it'll start producing selection
4033 * timeouts to the upper layer.
4034 */
4035 if ((bus >= 0) && (target >= 0))
4036 sc->ciss_physical[bus][target].cp_online = 0;
4037 } else {
4038 /*
4039 * Rescan the physical lun list for new items
4040 */
4041 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
4042 CISS_MAX_PHYSICAL);
4043 if (cll == NULL) {
4044 ciss_printf(sc, "Warning, cannot get physical lun list\n");
4045 break;
4046 }
4047 ciss_filter_physical(sc, cll);
4048 }
4049 break;
4050
4051 default:
4052 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass);
4053 return;
4054 }
4055
4056 if (cll != NULL)
4057 kfree(cll, CISS_MALLOC_CLASS);
4058 }
4059
4060 /************************************************************************
4061 * Handle deferred processing of notify events. Notify events may need
4062 * sleep which is unsafe during an interrupt.
4063 */
4064 static void
ciss_notify_thread(void * arg)4065 ciss_notify_thread(void *arg)
4066 {
4067 struct ciss_softc *sc;
4068 struct ciss_request *cr;
4069 struct ciss_notify *cn;
4070
4071 sc = (struct ciss_softc *)arg;
4072 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
4073
4074 for (;;) {
4075 if (STAILQ_EMPTY(&sc->ciss_notify) != 0 &&
4076 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) {
4077 lksleep(&sc->ciss_notify, &sc->ciss_lock, 0, "idle", 0);
4078 }
4079
4080 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT)
4081 break;
4082
4083 cr = ciss_dequeue_notify(sc);
4084
4085 if (cr == NULL)
4086 panic("cr null");
4087 cn = (struct ciss_notify *)cr->cr_data;
4088
4089 switch (cn->class) {
4090 case CISS_NOTIFY_HOTPLUG:
4091 ciss_notify_hotplug(sc, cn);
4092 break;
4093 case CISS_NOTIFY_LOGICAL:
4094 ciss_notify_logical(sc, cn);
4095 break;
4096 case CISS_NOTIFY_PHYSICAL:
4097 ciss_notify_physical(sc, cn);
4098 break;
4099 }
4100
4101 ciss_release_request(cr);
4102
4103 }
4104 sc->ciss_notify_thread = NULL;
4105 wakeup(&sc->ciss_notify_thread);
4106
4107 lockmgr(&sc->ciss_lock, LK_RELEASE);
4108 kthread_exit();
4109 }
4110
4111 /************************************************************************
4112 * Start the notification kernel thread.
4113 */
4114 static void
ciss_spawn_notify_thread(struct ciss_softc * sc)4115 ciss_spawn_notify_thread(struct ciss_softc *sc)
4116 {
4117
4118 if (kthread_create((void(*)(void *))ciss_notify_thread, sc,
4119 &sc->ciss_notify_thread, "ciss_notify%d",
4120 device_get_unit(sc->ciss_dev)))
4121 panic("Could not create notify thread\n");
4122 }
4123
4124 /************************************************************************
4125 * Kill the notification kernel thread.
4126 */
4127 static void
ciss_kill_notify_thread(struct ciss_softc * sc)4128 ciss_kill_notify_thread(struct ciss_softc *sc)
4129 {
4130
4131 if (sc->ciss_notify_thread == NULL)
4132 return;
4133
4134 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT;
4135 wakeup(&sc->ciss_notify);
4136 lksleep(&sc->ciss_notify_thread, &sc->ciss_lock, 0, "thtrm", 0);
4137 }
4138
4139 /************************************************************************
4140 * Print a request.
4141 */
4142 static void
ciss_print_request(struct ciss_request * cr)4143 ciss_print_request(struct ciss_request *cr)
4144 {
4145 struct ciss_softc *sc;
4146 struct ciss_command *cc;
4147 int i;
4148 char hexstr[HEX_NCPYLEN(CISS_CDB_BUFFER_SIZE)];
4149
4150 sc = cr->cr_sc;
4151 cc = cr->cr_cc;
4152
4153 ciss_printf(sc, "REQUEST @ %p\n", cr);
4154 ciss_printf(sc, " data %p/%d tag %d flags %pb%i\n",
4155 cr->cr_data, cr->cr_length, cr->cr_tag,
4156 "\20\1mapped\2sleep\3poll\4dataout\5datain\n", cr->cr_flags);
4157 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n",
4158 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag);
4159 switch(cc->header.address.mode.mode) {
4160 case CISS_HDR_ADDRESS_MODE_PERIPHERAL:
4161 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL:
4162 ciss_printf(sc, " physical bus %d target %d\n",
4163 cc->header.address.physical.bus, cc->header.address.physical.target);
4164 break;
4165 case CISS_HDR_ADDRESS_MODE_LOGICAL:
4166 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun);
4167 break;
4168 }
4169 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n",
4170 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" :
4171 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" :
4172 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??",
4173 cc->cdb.cdb_length,
4174 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" :
4175 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??",
4176 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" :
4177 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" :
4178 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" :
4179 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" :
4180 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??");
4181 ciss_printf(sc, " %s\n", hexncpy(&cc->cdb.cdb[0], cc->cdb.cdb_length,
4182 hexstr, HEX_NCPYLEN(cc->cdb.cdb_length), " "));
4183
4184 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) {
4185 /* XXX print error info */
4186 } else {
4187 /* since we don't use chained s/g, don't support it here */
4188 for (i = 0; i < cc->header.sg_in_list; i++) {
4189 if ((i % 4) == 0)
4190 ciss_printf(sc, " ");
4191 kprintf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length);
4192 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1)))
4193 kprintf("\n");
4194 }
4195 }
4196 }
4197
4198 /************************************************************************
4199 * Print information about the status of a logical drive.
4200 */
4201 static void
ciss_print_ldrive(struct ciss_softc * sc,struct ciss_ldrive * ld)4202 ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld)
4203 {
4204 int bus, target, i;
4205
4206 if (ld->cl_lstatus == NULL) {
4207 kprintf("does not exist\n");
4208 return;
4209 }
4210
4211 /* print drive status */
4212 switch(ld->cl_lstatus->status) {
4213 case CISS_LSTATUS_OK:
4214 kprintf("online\n");
4215 break;
4216 case CISS_LSTATUS_INTERIM_RECOVERY:
4217 kprintf("in interim recovery mode\n");
4218 break;
4219 case CISS_LSTATUS_READY_RECOVERY:
4220 kprintf("ready to begin recovery\n");
4221 break;
4222 case CISS_LSTATUS_RECOVERING:
4223 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4224 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4225 kprintf("being recovered, working on physical drive %d.%d, %u blocks remaining\n",
4226 bus, target, ld->cl_lstatus->blocks_to_recover);
4227 break;
4228 case CISS_LSTATUS_EXPANDING:
4229 kprintf("being expanded, %u blocks remaining\n",
4230 ld->cl_lstatus->blocks_to_recover);
4231 break;
4232 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4233 kprintf("queued for expansion\n");
4234 break;
4235 case CISS_LSTATUS_FAILED:
4236 kprintf("queued for expansion\n");
4237 break;
4238 case CISS_LSTATUS_WRONG_PDRIVE:
4239 kprintf("wrong physical drive inserted\n");
4240 break;
4241 case CISS_LSTATUS_MISSING_PDRIVE:
4242 kprintf("missing a needed physical drive\n");
4243 break;
4244 case CISS_LSTATUS_BECOMING_READY:
4245 kprintf("becoming ready\n");
4246 break;
4247 }
4248
4249 /* print failed physical drives */
4250 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) {
4251 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]);
4252 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]);
4253 if (bus == -1)
4254 continue;
4255 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target,
4256 ld->cl_lstatus->drive_failure_map[i]);
4257 }
4258 }
4259
4260 #ifdef CISS_DEBUG
4261 #include "opt_ddb.h"
4262 #ifdef DDB
4263 #include <ddb/ddb.h>
4264 /************************************************************************
4265 * Print information about the controller/driver.
4266 */
4267 static void
ciss_print_adapter(struct ciss_softc * sc)4268 ciss_print_adapter(struct ciss_softc *sc)
4269 {
4270 int i, j;
4271
4272 ciss_printf(sc, "ADAPTER:\n");
4273 for (i = 0; i < CISSQ_COUNT; i++) {
4274 ciss_printf(sc, "%s %d/%d\n",
4275 i == 0 ? "free" :
4276 i == 1 ? "busy" : "complete",
4277 sc->ciss_qstat[i].q_length,
4278 sc->ciss_qstat[i].q_max);
4279 }
4280 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests);
4281 ciss_printf(sc, "flags %pb%i\n",
4282 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n",
4283 sc->ciss_flags);
4284
4285 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
4286 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
4287 ciss_printf(sc, "LOGICAL DRIVE %d: ", i);
4288 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]);
4289 }
4290 }
4291
4292 /* XXX Should physical drives be printed out here? */
4293
4294 for (i = 1; i < sc->ciss_max_requests; i++)
4295 ciss_print_request(sc->ciss_request + i);
4296 }
4297
4298 /* DDB hook */
DB_COMMAND(ciss_prt,db_ciss_prt)4299 DB_COMMAND(ciss_prt, db_ciss_prt)
4300 {
4301 struct ciss_softc *sc;
4302
4303 sc = devclass_get_softc(devclass_find("ciss"), 0);
4304 if (sc == NULL) {
4305 kprintf("no ciss controllers\n");
4306 } else {
4307 ciss_print_adapter(sc);
4308 }
4309 }
4310 #endif
4311 #endif
4312
4313 /************************************************************************
4314 * Return a name for a logical drive status value.
4315 */
4316 static const char *
ciss_name_ldrive_status(int status)4317 ciss_name_ldrive_status(int status)
4318 {
4319 switch (status) {
4320 case CISS_LSTATUS_OK:
4321 return("OK");
4322 case CISS_LSTATUS_FAILED:
4323 return("failed");
4324 case CISS_LSTATUS_NOT_CONFIGURED:
4325 return("not configured");
4326 case CISS_LSTATUS_INTERIM_RECOVERY:
4327 return("interim recovery");
4328 case CISS_LSTATUS_READY_RECOVERY:
4329 return("ready for recovery");
4330 case CISS_LSTATUS_RECOVERING:
4331 return("recovering");
4332 case CISS_LSTATUS_WRONG_PDRIVE:
4333 return("wrong physical drive inserted");
4334 case CISS_LSTATUS_MISSING_PDRIVE:
4335 return("missing physical drive");
4336 case CISS_LSTATUS_EXPANDING:
4337 return("expanding");
4338 case CISS_LSTATUS_BECOMING_READY:
4339 return("becoming ready");
4340 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4341 return("queued for expansion");
4342 }
4343 return("unknown status");
4344 }
4345
4346 /************************************************************************
4347 * Return an online/offline/nonexistent value for a logical drive
4348 * status value.
4349 */
4350 static int
ciss_decode_ldrive_status(int status)4351 ciss_decode_ldrive_status(int status)
4352 {
4353 switch(status) {
4354 case CISS_LSTATUS_NOT_CONFIGURED:
4355 return(CISS_LD_NONEXISTENT);
4356
4357 case CISS_LSTATUS_OK:
4358 case CISS_LSTATUS_INTERIM_RECOVERY:
4359 case CISS_LSTATUS_READY_RECOVERY:
4360 case CISS_LSTATUS_RECOVERING:
4361 case CISS_LSTATUS_EXPANDING:
4362 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4363 return(CISS_LD_ONLINE);
4364
4365 case CISS_LSTATUS_FAILED:
4366 case CISS_LSTATUS_WRONG_PDRIVE:
4367 case CISS_LSTATUS_MISSING_PDRIVE:
4368 case CISS_LSTATUS_BECOMING_READY:
4369 default:
4370 return(CISS_LD_OFFLINE);
4371 }
4372 }
4373
4374
4375 /************************************************************************
4376 * Return a name for a logical drive's organisation.
4377 */
4378 static const char *
ciss_name_ldrive_org(int org)4379 ciss_name_ldrive_org(int org)
4380 {
4381 switch(org) {
4382 case CISS_LDRIVE_RAID0:
4383 return("RAID 0");
4384 case CISS_LDRIVE_RAID1:
4385 return("RAID 1(1+0)");
4386 case CISS_LDRIVE_RAID4:
4387 return("RAID 4");
4388 case CISS_LDRIVE_RAID5:
4389 return("RAID 5");
4390 case CISS_LDRIVE_RAID51:
4391 return("RAID 5+1");
4392 case CISS_LDRIVE_RAIDADG:
4393 return("RAID ADG");
4394 }
4395 return("unknown");
4396 }
4397
4398 /************************************************************************
4399 * Return a name for a command status value.
4400 */
4401 static const char *
ciss_name_command_status(int status)4402 ciss_name_command_status(int status)
4403 {
4404 switch(status) {
4405 case CISS_CMD_STATUS_SUCCESS:
4406 return("success");
4407 case CISS_CMD_STATUS_TARGET_STATUS:
4408 return("target status");
4409 case CISS_CMD_STATUS_DATA_UNDERRUN:
4410 return("data underrun");
4411 case CISS_CMD_STATUS_DATA_OVERRUN:
4412 return("data overrun");
4413 case CISS_CMD_STATUS_INVALID_COMMAND:
4414 return("invalid command");
4415 case CISS_CMD_STATUS_PROTOCOL_ERROR:
4416 return("protocol error");
4417 case CISS_CMD_STATUS_HARDWARE_ERROR:
4418 return("hardware error");
4419 case CISS_CMD_STATUS_CONNECTION_LOST:
4420 return("connection lost");
4421 case CISS_CMD_STATUS_ABORTED:
4422 return("aborted");
4423 case CISS_CMD_STATUS_ABORT_FAILED:
4424 return("abort failed");
4425 case CISS_CMD_STATUS_UNSOLICITED_ABORT:
4426 return("unsolicited abort");
4427 case CISS_CMD_STATUS_TIMEOUT:
4428 return("timeout");
4429 case CISS_CMD_STATUS_UNABORTABLE:
4430 return("unabortable");
4431 }
4432 return("unknown status");
4433 }
4434
4435 /************************************************************************
4436 * Handle an open on the control device.
4437 */
4438 static int
ciss_open(struct dev_open_args * ap)4439 ciss_open(struct dev_open_args *ap)
4440 {
4441 cdev_t dev = ap->a_head.a_dev;
4442 struct ciss_softc *sc;
4443
4444 debug_called(1);
4445
4446 sc = (struct ciss_softc *)dev->si_drv1;
4447
4448 /* we might want to veto if someone already has us open */
4449
4450 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
4451 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN;
4452 lockmgr(&sc->ciss_lock, LK_RELEASE);
4453 return(0);
4454 }
4455
4456 /************************************************************************
4457 * Handle the last close on the control device.
4458 */
4459 static int
ciss_close(struct dev_close_args * ap)4460 ciss_close(struct dev_close_args *ap)
4461 {
4462 cdev_t dev = ap->a_head.a_dev;
4463 struct ciss_softc *sc;
4464
4465 debug_called(1);
4466
4467 sc = (struct ciss_softc *)dev->si_drv1;
4468
4469 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
4470 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN;
4471 lockmgr(&sc->ciss_lock, LK_RELEASE);
4472 return (0);
4473 }
4474
4475 /********************************************************************************
4476 * Handle adapter-specific control operations.
4477 *
4478 * Note that the API here is compatible with the Linux driver, in order to
4479 * simplify the porting of Compaq's userland tools.
4480 */
4481 static int
ciss_ioctl(struct dev_ioctl_args * ap)4482 ciss_ioctl(struct dev_ioctl_args *ap)
4483 {
4484 caddr_t addr = ap->a_data;
4485 cdev_t dev = ap->a_head.a_dev;
4486 u_long cmd = ap->a_cmd;
4487 struct ciss_softc *sc;
4488 IOCTL_Command_struct *ioc = (IOCTL_Command_struct *)addr;
4489 #ifdef __x86_64__
4490 IOCTL_Command_struct32 *ioc32 = (IOCTL_Command_struct32 *)addr;
4491 IOCTL_Command_struct ioc_swab;
4492 #endif
4493 int error;
4494
4495 debug_called(1);
4496
4497 sc = (struct ciss_softc *)dev->si_drv1;
4498 error = 0;
4499 lockmgr(&sc->ciss_lock, LK_EXCLUSIVE);
4500
4501 switch(cmd) {
4502 case CCISS_GETQSTATS:
4503 {
4504 union ciss_statrequest *cr = (union ciss_statrequest *)addr;
4505
4506 switch (cr->cs_item) {
4507 case CISSQ_FREE:
4508 case CISSQ_NOTIFY:
4509 bcopy(&sc->ciss_qstat[cr->cs_item], &cr->cs_qstat,
4510 sizeof(struct ciss_qstat));
4511 break;
4512 default:
4513 error = ENOIOCTL;
4514 break;
4515 }
4516
4517 break;
4518 }
4519
4520 case CCISS_GETPCIINFO:
4521 {
4522 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr;
4523
4524 pis->bus = pci_get_bus(sc->ciss_dev);
4525 pis->dev_fn = pci_get_slot(sc->ciss_dev);
4526 pis->board_id = (pci_get_subvendor(sc->ciss_dev) << 16) |
4527 pci_get_subdevice(sc->ciss_dev);
4528
4529 break;
4530 }
4531
4532 case CCISS_GETINTINFO:
4533 {
4534 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4535
4536 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay;
4537 cis->count = sc->ciss_cfg->interrupt_coalesce_count;
4538
4539 break;
4540 }
4541
4542 case CCISS_SETINTINFO:
4543 {
4544 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4545
4546 if ((cis->delay == 0) && (cis->count == 0)) {
4547 error = EINVAL;
4548 break;
4549 }
4550
4551 /*
4552 * XXX apparently this is only safe if the controller is idle,
4553 * we should suspend it before doing this.
4554 */
4555 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay;
4556 sc->ciss_cfg->interrupt_coalesce_count = cis->count;
4557
4558 if (ciss_update_config(sc))
4559 error = EIO;
4560
4561 /* XXX resume the controller here */
4562 break;
4563 }
4564
4565 case CCISS_GETNODENAME:
4566 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr,
4567 sizeof(NodeName_type));
4568 break;
4569
4570 case CCISS_SETNODENAME:
4571 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name,
4572 sizeof(NodeName_type));
4573 if (ciss_update_config(sc))
4574 error = EIO;
4575 break;
4576
4577 case CCISS_GETHEARTBEAT:
4578 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat;
4579 break;
4580
4581 case CCISS_GETBUSTYPES:
4582 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types;
4583 break;
4584
4585 case CCISS_GETFIRMVER:
4586 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr,
4587 sizeof(FirmwareVer_type));
4588 break;
4589
4590 case CCISS_GETDRIVERVER:
4591 *(DriverVer_type *)addr = CISS_DRIVER_VERSION;
4592 break;
4593
4594 case CCISS_REVALIDVOLS:
4595 /*
4596 * This is a bit ugly; to do it "right" we really need
4597 * to find any disks that have changed, kick CAM off them,
4598 * then rescan only these disks. It'd be nice if they
4599 * a) told us which disk(s) they were going to play with,
4600 * and b) which ones had arrived. 8(
4601 */
4602 break;
4603
4604 #ifdef __x86_64__
4605 case CCISS_PASSTHRU32:
4606 ioc_swab.LUN_info = ioc32->LUN_info;
4607 ioc_swab.Request = ioc32->Request;
4608 ioc_swab.error_info = ioc32->error_info;
4609 ioc_swab.buf_size = ioc32->buf_size;
4610 ioc_swab.buf = (u_int8_t *)(uintptr_t)ioc32->buf;
4611 ioc = &ioc_swab;
4612 /* FALLTHROUGH */
4613 #endif
4614
4615 case CCISS_PASSTHRU:
4616 error = ciss_user_command(sc, ioc);
4617 break;
4618
4619 default:
4620 debug(0, "unknown ioctl 0x%lx", cmd);
4621
4622 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO);
4623 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO);
4624 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO);
4625 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME);
4626 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME);
4627 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT);
4628 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES);
4629 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER);
4630 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER);
4631 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS);
4632 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU);
4633
4634 error = ENOIOCTL;
4635 break;
4636 }
4637
4638 lockmgr(&sc->ciss_lock, LK_RELEASE);
4639 return(error);
4640 }
4641