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
88#include <cam/cam.h>
89#include <cam/cam_ccb.h>
90#include <cam/cam_periph.h>
91#include <cam/cam_sim.h>
92#include <cam/cam_xpt_sim.h>
93#include <cam/scsi/scsi_all.h>
94#include <cam/scsi/scsi_message.h>
95
96#include <machine/bus.h>
97#include <machine/endian.h>
98#include <machine/resource.h>
99#include <sys/rman.h>
100
101#include <dev/pci/pcireg.h>
102#include <dev/pci/pcivar.h>
103
104#include <dev/ciss/cissreg.h>
105#include <dev/ciss/cissio.h>
106#include <dev/ciss/cissvar.h>
107
108MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", "ciss internal data buffers");
109
110/* pci interface */
111static int ciss_lookup(device_t dev);
112static int ciss_probe(device_t dev);
113static int ciss_attach(device_t dev);
114static int ciss_detach(device_t dev);
115static int ciss_shutdown(device_t dev);
116
117/* (de)initialisation functions, control wrappers */
118static int ciss_init_pci(struct ciss_softc *sc);
119static int ciss_setup_msix(struct ciss_softc *sc);
120static int ciss_init_perf(struct ciss_softc *sc);
121static int ciss_wait_adapter(struct ciss_softc *sc);
122static int ciss_flush_adapter(struct ciss_softc *sc);
123static int ciss_init_requests(struct ciss_softc *sc);
124static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs,
125 int nseg, int error);
126static int ciss_identify_adapter(struct ciss_softc *sc);
127static int ciss_init_logical(struct ciss_softc *sc);
128static int ciss_init_physical(struct ciss_softc *sc);
129static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll);
130static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld);
131static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld);
132static int ciss_update_config(struct ciss_softc *sc);
133static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld);
134static void ciss_init_sysctl(struct ciss_softc *sc);
135static void ciss_soft_reset(struct ciss_softc *sc);
136static void ciss_free(struct ciss_softc *sc);
137static void ciss_spawn_notify_thread(struct ciss_softc *sc);
138static void ciss_kill_notify_thread(struct ciss_softc *sc);
139
140/* request submission/completion */
141static int ciss_start(struct ciss_request *cr);
142static void ciss_done(struct ciss_softc *sc, cr_qhead_t *qh);
143static void ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh);
144static void ciss_intr(void *arg);
145static void ciss_perf_intr(void *arg);
146static void ciss_perf_msi_intr(void *arg);
147static void ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh);
148static int _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func);
149static int ciss_synch_request(struct ciss_request *cr, int timeout);
150static int ciss_poll_request(struct ciss_request *cr, int timeout);
151static int ciss_wait_request(struct ciss_request *cr, int timeout);
152#if 0
153static int ciss_abort_request(struct ciss_request *cr);
154#endif
155
156/* request queueing */
157static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp);
158static void ciss_preen_command(struct ciss_request *cr);
159static void ciss_release_request(struct ciss_request *cr);
160
161/* request helpers */
162static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
163 int opcode, void **bufp, size_t bufsize);
164static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc);
165
166/* DMA map/unmap */
167static int ciss_map_request(struct ciss_request *cr);
168static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs,
169 int nseg, int error);
170static void ciss_unmap_request(struct ciss_request *cr);
171
172/* CAM interface */
173static int ciss_cam_init(struct ciss_softc *sc);
174static void ciss_cam_rescan_target(struct ciss_softc *sc,
175 int bus, int target);
176static void ciss_cam_rescan_all(struct ciss_softc *sc);
177static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb);
178static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb);
179static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
180static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio);
181static void ciss_cam_poll(struct cam_sim *sim);
182static void ciss_cam_complete(struct ciss_request *cr);
183static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio);
184static struct cam_periph *ciss_find_periph(struct ciss_softc *sc,
185 int bus, int target);
186static int ciss_name_device(struct ciss_softc *sc, int bus, int target);
187
188/* periodic status monitoring */
189static void ciss_periodic(void *arg);
190static void ciss_nop_complete(struct ciss_request *cr);
191static void ciss_disable_adapter(struct ciss_softc *sc);
192static void ciss_notify_event(struct ciss_softc *sc);
193static void ciss_notify_complete(struct ciss_request *cr);
194static int ciss_notify_abort(struct ciss_softc *sc);
195static int ciss_notify_abort_bmic(struct ciss_softc *sc);
196static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn);
197static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn);
198static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn);
199
200/* debugging output */
201static void ciss_print_request(struct ciss_request *cr);
202static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld);
203static const char *ciss_name_ldrive_status(int status);
204static int ciss_decode_ldrive_status(int status);
205static const char *ciss_name_ldrive_org(int org);
206static const char *ciss_name_command_status(int status);
207
208/*
209 * PCI bus interface.
210 */
211static device_method_t ciss_methods[] = {
212 /* Device interface */
213 DEVMETHOD(device_probe, ciss_probe),
214 DEVMETHOD(device_attach, ciss_attach),
215 DEVMETHOD(device_detach, ciss_detach),
216 DEVMETHOD(device_shutdown, ciss_shutdown),
217 { 0, 0 }
218};
219
220static driver_t ciss_pci_driver = {
221 "ciss",
222 ciss_methods,
223 sizeof(struct ciss_softc)
224};
225
226static devclass_t ciss_devclass;
227DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0);
228MODULE_DEPEND(ciss, cam, 1, 1, 1);
229MODULE_DEPEND(ciss, pci, 1, 1, 1);
230
231/*
232 * Control device interface.
233 */
234static d_open_t ciss_open;
235static d_close_t ciss_close;
236static d_ioctl_t ciss_ioctl;
237
238static struct cdevsw ciss_cdevsw = {
239 .d_version = D_VERSION,
240 .d_flags = 0,
241 .d_open = ciss_open,
242 .d_close = ciss_close,
243 .d_ioctl = ciss_ioctl,
244 .d_name = "ciss",
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 */
251static unsigned int ciss_expose_hidden_physical = 0;
252TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical);
253
254static unsigned int ciss_nop_message_heartbeat = 0;
255TUNABLE_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 */
263static int ciss_force_transport = 0;
264TUNABLE_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 */
272static int ciss_force_interrupt = 0;
273TUNABLE_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_SA5 (1<<0)
283#define CISS_BOARD_SA5B (1<<1)
284
285static struct
286{
287 u_int16_t subvendor;
288 u_int16_t subdevice;
289 int flags;
290 char *desc;
291} ciss_vendor_data[] = {
292 { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" },
293 { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" },
294 { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" },
295 { 0x0e11, 0x4083, CISS_BOARD_SA5B, "HP Smart Array 5312" },
296 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" },
297 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" },
298 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" },
299 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" },
300 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" },
301 { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" },
302 { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" },
303 { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" },
304 { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" },
305 { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" },
306 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" },
307 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" },
308 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" },
309 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" },
310 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" },
311 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" },
312 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" },
313 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" },
314 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" },
315 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" },
316 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" },
317 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array E500" },
318 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" },
319 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" },
320 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" },
321 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" },
322 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" },
323 { 0x103C, 0x323D, CISS_BOARD_SA5, "HP Smart Array P700m" },
324 { 0x103C, 0x3241, CISS_BOARD_SA5, "HP Smart Array P212" },
325 { 0x103C, 0x3243, CISS_BOARD_SA5, "HP Smart Array P410" },
326 { 0x103C, 0x3245, CISS_BOARD_SA5, "HP Smart Array P410i" },
327 { 0x103C, 0x3247, CISS_BOARD_SA5, "HP Smart Array P411" },
328 { 0x103C, 0x3249, CISS_BOARD_SA5, "HP Smart Array P812" },
329 { 0x103C, 0x324A, CISS_BOARD_SA5, "HP Smart Array P712m" },
330 { 0x103C, 0x324B, CISS_BOARD_SA5, "HP Smart Array" },
331 { 0, 0, 0, NULL }
332};
333
334/************************************************************************
335 * Find a match for the device in our list of known adapters.
336 */
337static int
338ciss_lookup(device_t dev)
339{
340 int i;
341
342 for (i = 0; ciss_vendor_data[i].desc != NULL; i++)
343 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) &&
344 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) {
345 return(i);
346 }
347 return(-1);
348}
349
350/************************************************************************
351 * Match a known CISS adapter.
352 */
353static int
354ciss_probe(device_t dev)
355{
356 int i;
357
358 i = ciss_lookup(dev);
359 if (i != -1) {
360 device_set_desc(dev, ciss_vendor_data[i].desc);
361 return(BUS_PROBE_DEFAULT);
362 }
363 return(ENOENT);
364}
365
366/************************************************************************
367 * Attach the driver to this adapter.
368 */
369static int
370ciss_attach(device_t dev)
371{
372 struct ciss_softc *sc;
373 int error;
374
375 debug_called(1);
376
377#ifdef CISS_DEBUG
378 /* print structure/union sizes */
379 debug_struct(ciss_command);
380 debug_struct(ciss_header);
381 debug_union(ciss_device_address);
382 debug_struct(ciss_cdb);
383 debug_struct(ciss_report_cdb);
384 debug_struct(ciss_notify_cdb);
385 debug_struct(ciss_notify);
386 debug_struct(ciss_message_cdb);
387 debug_struct(ciss_error_info_pointer);
388 debug_struct(ciss_error_info);
389 debug_struct(ciss_sg_entry);
390 debug_struct(ciss_config_table);
391 debug_struct(ciss_bmic_cdb);
392 debug_struct(ciss_bmic_id_ldrive);
393 debug_struct(ciss_bmic_id_lstatus);
394 debug_struct(ciss_bmic_id_table);
395 debug_struct(ciss_bmic_id_pdrive);
396 debug_struct(ciss_bmic_blink_pdrive);
397 debug_struct(ciss_bmic_flush_cache);
398 debug_const(CISS_MAX_REQUESTS);
399 debug_const(CISS_MAX_LOGICAL);
400 debug_const(CISS_INTERRUPT_COALESCE_DELAY);
401 debug_const(CISS_INTERRUPT_COALESCE_COUNT);
402 debug_const(CISS_COMMAND_ALLOC_SIZE);
403 debug_const(CISS_COMMAND_SG_LENGTH);
404
405 debug_type(cciss_pci_info_struct);
406 debug_type(cciss_coalint_struct);
407 debug_type(cciss_coalint_struct);
408 debug_type(NodeName_type);
409 debug_type(NodeName_type);
410 debug_type(Heartbeat_type);
411 debug_type(BusTypes_type);
412 debug_type(FirmwareVer_type);
413 debug_type(DriverVer_type);
414 debug_type(IOCTL_Command_struct);
415#endif
416
417 sc = device_get_softc(dev);
418 sc->ciss_dev = dev;
419
420 /*
421 * Do PCI-specific init.
422 */
423 if ((error = ciss_init_pci(sc)) != 0)
424 goto out;
425
426 /*
427 * Initialise driver queues.
428 */
429 ciss_initq_free(sc);
430 ciss_initq_notify(sc);
431 mtx_init(&sc->ciss_mtx, "cissmtx", NULL, MTX_DEF);
432 callout_init_mtx(&sc->ciss_periodic, &sc->ciss_mtx, 0);
433
434 /*
435 * Initalize device sysctls.
436 */
437 ciss_init_sysctl(sc);
438
439 /*
440 * Initialise command/request pool.
441 */
442 if ((error = ciss_init_requests(sc)) != 0)
443 goto out;
444
445 /*
446 * Get adapter information.
447 */
448 if ((error = ciss_identify_adapter(sc)) != 0)
449 goto out;
450
451 /*
452 * Find all the physical devices.
453 */
454 if ((error = ciss_init_physical(sc)) != 0)
455 goto out;
456
457 /*
458 * Build our private table of logical devices.
459 */
460 if ((error = ciss_init_logical(sc)) != 0)
461 goto out;
462
463 /*
464 * Enable interrupts so that the CAM scan can complete.
465 */
466 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc);
467
468 /*
469 * Initialise the CAM interface.
470 */
471 if ((error = ciss_cam_init(sc)) != 0)
472 goto out;
473
474 /*
475 * Start the heartbeat routine and event chain.
476 */
477 ciss_periodic(sc);
478
479 /*
480 * Create the control device.
481 */
482 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev),
483 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
484 "ciss%d", device_get_unit(sc->ciss_dev));
485 sc->ciss_dev_t->si_drv1 = sc;
486
487 /*
488 * The adapter is running; synchronous commands can now sleep
489 * waiting for an interrupt to signal completion.
490 */
491 sc->ciss_flags |= CISS_FLAG_RUNNING;
492
493 ciss_spawn_notify_thread(sc);
494
495 error = 0;
496 out:
497 if (error != 0)
498 ciss_free(sc);
499 return(error);
500}
501
502/************************************************************************
503 * Detach the driver from this adapter.
504 */
505static int
506ciss_detach(device_t dev)
507{
508 struct ciss_softc *sc = device_get_softc(dev);
509
510 debug_called(1);
511
512 mtx_lock(&sc->ciss_mtx);
513 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) {
514 mtx_unlock(&sc->ciss_mtx);
515 return (EBUSY);
516 }
517
518 /* flush adapter cache */
519 ciss_flush_adapter(sc);
520
521 /* release all resources. The mutex is released and freed here too. */
522 ciss_free(sc);
523
524 return(0);
525}
526
527/************************************************************************
528 * Prepare adapter for system shutdown.
529 */
530static int
531ciss_shutdown(device_t dev)
532{
533 struct ciss_softc *sc = device_get_softc(dev);
534
535 debug_called(1);
536
537 mtx_lock(&sc->ciss_mtx);
538 /* flush adapter cache */
539 ciss_flush_adapter(sc);
540
541 if (sc->ciss_soft_reset)
542 ciss_soft_reset(sc);
543 mtx_unlock(&sc->ciss_mtx);
544
545 return(0);
546}
547
548static void
549ciss_init_sysctl(struct ciss_softc *sc)
550{
551
552 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev),
553 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)),
554 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, "");
555}
556
557/************************************************************************
558 * Perform PCI-specific attachment actions.
559 */
560static int
561ciss_init_pci(struct ciss_softc *sc)
562{
563 uintptr_t cbase, csize, cofs;
564 uint32_t method, supported_methods;
565 int error, sqmask, i;
566 void *intr;
567
568 debug_called(1);
569
570 /*
571 * Work out adapter type.
572 */
573 i = ciss_lookup(sc->ciss_dev);
574 if (i < 0) {
575 ciss_printf(sc, "unknown adapter type\n");
576 return (ENXIO);
577 }
578
579 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) {
580 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5;
581 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) {
582 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5B;
583 } else {
584 /*
585 * XXX Big hammer, masks/unmasks all possible interrupts. This should
586 * work on all hardware variants. Need to add code to handle the
587 * "controller crashed" interupt bit that this unmasks.
588 */
589 sqmask = ~0;
590 }
591
592 /*
593 * Allocate register window first (we need this to find the config
594 * struct).
595 */
596 error = ENXIO;
597 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS;
598 if ((sc->ciss_regs_resource =
599 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
600 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) {
601 ciss_printf(sc, "can't allocate register window\n");
602 return(ENXIO);
603 }
604 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource);
605 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource);
606
607 /*
608 * Find the BAR holding the config structure. If it's not the one
609 * we already mapped for registers, map it too.
610 */
611 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff;
612 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) {
613 if ((sc->ciss_cfg_resource =
614 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
615 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) {
616 ciss_printf(sc, "can't allocate config window\n");
617 return(ENXIO);
618 }
619 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource);
620 csize = rman_get_end(sc->ciss_cfg_resource) -
621 rman_get_start(sc->ciss_cfg_resource) + 1;
622 } else {
623 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource);
624 csize = rman_get_end(sc->ciss_regs_resource) -
625 rman_get_start(sc->ciss_regs_resource) + 1;
626 }
627 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF);
628
629 /*
630 * Use the base/size/offset values we just calculated to
631 * sanity-check the config structure. If it's OK, point to it.
632 */
633 if ((cofs + sizeof(struct ciss_config_table)) > csize) {
634 ciss_printf(sc, "config table outside window\n");
635 return(ENXIO);
636 }
637 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs);
638 debug(1, "config struct at %p", sc->ciss_cfg);
639
640 /*
641 * Calculate the number of request structures/commands we are
642 * going to provide for this adapter.
643 */
644 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands);
645
646 /*
647 * Validate the config structure. If we supported other transport
648 * methods, we could select amongst them at this point in time.
649 */
650 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) {
651 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n",
652 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1],
653 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]);
654 return(ENXIO);
655 }
656
657 /*
658 * Select the mode of operation, prefer Performant.
659 */
660 if (!(sc->ciss_cfg->supported_methods &
661 (CISS_TRANSPORT_METHOD_SIMPLE | CISS_TRANSPORT_METHOD_PERF))) {
662 ciss_printf(sc, "No supported transport layers: 0x%x\n",
663 sc->ciss_cfg->supported_methods);
664 return(ENXIO);
665 }
666
667 switch (ciss_force_transport) {
668 case 1:
669 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
670 break;
671 case 2:
672 supported_methods = CISS_TRANSPORT_METHOD_PERF;
673 break;
674 default:
675 supported_methods = sc->ciss_cfg->supported_methods;
676 break;
677 }
678
679setup:
680 if (supported_methods & CISS_TRANSPORT_METHOD_PERF) {
681 method = CISS_TRANSPORT_METHOD_PERF;
682 sc->ciss_perf = (struct ciss_perf_config *)(cbase + cofs +
683 sc->ciss_cfg->transport_offset);
684 if (ciss_init_perf(sc)) {
685 supported_methods &= ~method;
686 goto setup;
687 }
688 } else if (supported_methods & CISS_TRANSPORT_METHOD_SIMPLE) {
689 method = CISS_TRANSPORT_METHOD_SIMPLE;
690 } else {
691 ciss_printf(sc, "No supported transport methods: 0x%x\n",
692 sc->ciss_cfg->supported_methods);
693 return(ENXIO);
694 }
695
696 /*
697 * Tell it we're using the low 4GB of RAM. Set the default interrupt
698 * coalescing options.
699 */
700 sc->ciss_cfg->requested_method = method;
701 sc->ciss_cfg->command_physlimit = 0;
702 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY;
703 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT;
704
705#ifdef __i386__
706 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH;
707#endif
708
709 if (ciss_update_config(sc)) {
710 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n",
711 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR));
712 return(ENXIO);
713 }
714 if ((sc->ciss_cfg->active_method & method) == 0) {
715 supported_methods &= ~method;
716 if (supported_methods == 0) {
717 ciss_printf(sc, "adapter refuses to go into available transports "
718 "mode (0x%x, 0x%x)\n", supported_methods,
719 sc->ciss_cfg->active_method);
720 return(ENXIO);
721 } else
722 goto setup;
723 }
724
725 /*
726 * Wait for the adapter to come ready.
727 */
728 if ((error = ciss_wait_adapter(sc)) != 0)
729 return(error);
730
731 /* Prepare to possibly use MSIX and/or PERFORMANT interrupts. Normal
732 * interrupts have a rid of 0, this will be overridden if MSIX is used.
733 */
734 sc->ciss_irq_rid[0] = 0;
735 if (method == CISS_TRANSPORT_METHOD_PERF) {
736 ciss_printf(sc, "PERFORMANT Transport\n");
737 if ((ciss_force_interrupt != 1) && (ciss_setup_msix(sc) == 0)) {
738 intr = ciss_perf_msi_intr;
739 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_MSI;
740 } else {
741 intr = ciss_perf_intr;
742 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_OPQ;
743 }
744 } else {
745 ciss_printf(sc, "SIMPLE Transport\n");
746 /* MSIX doesn't seem to work in SIMPLE mode, only enable if it forced */
747 if (ciss_force_interrupt == 2)
748 /* If this fails, we automatically revert to INTx */
749 ciss_setup_msix(sc);
750 sc->ciss_perf = NULL;
751 intr = ciss_intr;
752 sc->ciss_interrupt_mask = sqmask;
753 }
754
755 /*
756 * Turn off interrupts before we go routing anything.
757 */
758 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
759
760 /*
761 * Allocate and set up our interrupt.
762 */
763 if ((sc->ciss_irq_resource =
764 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid[0],
765 RF_ACTIVE | RF_SHAREABLE)) == NULL) {
766 ciss_printf(sc, "can't allocate interrupt\n");
767 return(ENXIO);
768 }
769
770 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource,
771 INTR_TYPE_CAM|INTR_MPSAFE, NULL, intr, sc,
772 &sc->ciss_intr)) {
773 ciss_printf(sc, "can't set up interrupt\n");
774 return(ENXIO);
775 }
776
777 /*
778 * Allocate the parent bus DMA tag appropriate for our PCI
779 * interface.
780 *
781 * Note that "simple" adapters can only address within a 32-bit
782 * span.
783 */
784 if (bus_dma_tag_create(NULL, /* parent */
785 1, 0, /* alignment, boundary */
786 BUS_SPACE_MAXADDR, /* lowaddr */
787 BUS_SPACE_MAXADDR, /* highaddr */
788 NULL, NULL, /* filter, filterarg */
789 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
790 CISS_COMMAND_SG_LENGTH, /* nsegments */
791 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
792 0, /* flags */
793 NULL, NULL, /* lockfunc, lockarg */
794 &sc->ciss_parent_dmat)) {
795 ciss_printf(sc, "can't allocate parent DMA tag\n");
796 return(ENOMEM);
797 }
798
799 /*
800 * Create DMA tag for mapping buffers into adapter-addressable
801 * space.
802 */
803 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
804 1, 0, /* alignment, boundary */
805 BUS_SPACE_MAXADDR, /* lowaddr */
806 BUS_SPACE_MAXADDR, /* highaddr */
807 NULL, NULL, /* filter, filterarg */
808 MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */
809 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
810 BUS_DMA_ALLOCNOW, /* flags */
811 busdma_lock_mutex, &sc->ciss_mtx, /* lockfunc, lockarg */
812 &sc->ciss_buffer_dmat)) {
813 ciss_printf(sc, "can't allocate buffer DMA tag\n");
814 return(ENOMEM);
815 }
816 return(0);
817}
818
819/************************************************************************
820 * Setup MSI/MSIX operation (Performant only)
821 * Four interrupts are available, but we only use 1 right now.
822 */
823static int
824ciss_setup_msix(struct ciss_softc *sc)
825{
826 uint32_t id;
827 int val, i;
828
829 /* Weed out devices that don't actually support MSI */
830 id = (pci_get_subvendor(sc->ciss_dev) << 16) |
831 pci_get_subdevice(sc->ciss_dev);
832 if ((id == 0x0e114070) || (id == 0x0e114080) || (id == 0x0e114082) ||
833 (id == 0x0e114083))
834 return (EINVAL);
835
836 val = pci_msix_count(sc->ciss_dev);
837 if ((val != CISS_MSI_COUNT) || (pci_alloc_msix(sc->ciss_dev, &val) != 0))
838 return (EINVAL);
839
840 sc->ciss_msi = val;
841 ciss_printf(sc, "Using MSIX interrupt\n");
842
843 for (i = 0; i < CISS_MSI_COUNT; i++)
844 sc->ciss_irq_rid[i] = i + 1;
845
846 return (0);
847
848}
849
850/************************************************************************
851 * Setup the Performant structures.
852 */
853static int
854ciss_init_perf(struct ciss_softc *sc)
855{
856 struct ciss_perf_config *pc = sc->ciss_perf;
857 int reply_size;
858
859 /*
860 * Create the DMA tag for the reply queue.
861 */
862 reply_size = sizeof(uint64_t) * sc->ciss_max_requests;
863 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
864 1, 0, /* alignment, boundary */
865 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
866 BUS_SPACE_MAXADDR, /* highaddr */
867 NULL, NULL, /* filter, filterarg */
868 reply_size, 1, /* maxsize, nsegments */
869 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
870 0, /* flags */
871 NULL, NULL, /* lockfunc, lockarg */
872 &sc->ciss_reply_dmat)) {
873 ciss_printf(sc, "can't allocate reply DMA tag\n");
874 return(ENOMEM);
875 }
876 /*
877 * Allocate memory and make it available for DMA.
878 */
879 if (bus_dmamem_alloc(sc->ciss_reply_dmat, (void **)&sc->ciss_reply,
880 BUS_DMA_NOWAIT, &sc->ciss_reply_map)) {
881 ciss_printf(sc, "can't allocate reply memory\n");
882 return(ENOMEM);
883 }
884 bus_dmamap_load(sc->ciss_reply_dmat, sc->ciss_reply_map, sc->ciss_reply,
885 reply_size, ciss_command_map_helper, &sc->ciss_reply_phys, 0);
886 bzero(sc->ciss_reply, reply_size);
887
888 sc->ciss_cycle = 0x1;
889 sc->ciss_rqidx = 0;
890
891 /*
892 * Preload the fetch table with common command sizes. This allows the
893 * hardware to not waste bus cycles for typical i/o commands, but also not
894 * tax the driver to be too exact in choosing sizes. The table is optimized
895 * for page-aligned i/o's, but since most i/o comes from the various pagers,
896 * it's a reasonable assumption to make.
897 */
898 pc->fetch_count[CISS_SG_FETCH_NONE] = (sizeof(struct ciss_command) + 15) / 16;
899 pc->fetch_count[CISS_SG_FETCH_1] =
900 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 1 + 15) / 16;
901 pc->fetch_count[CISS_SG_FETCH_2] =
902 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 2 + 15) / 16;
903 pc->fetch_count[CISS_SG_FETCH_4] =
904 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 4 + 15) / 16;
905 pc->fetch_count[CISS_SG_FETCH_8] =
906 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 8 + 15) / 16;
907 pc->fetch_count[CISS_SG_FETCH_16] =
908 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 16 + 15) / 16;
909 pc->fetch_count[CISS_SG_FETCH_32] =
910 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 32 + 15) / 16;
911 pc->fetch_count[CISS_SG_FETCH_MAX] = (CISS_COMMAND_ALLOC_SIZE + 15) / 16;
912
913 pc->rq_size = sc->ciss_max_requests; /* XXX less than the card supports? */
914 pc->rq_count = 1; /* XXX Hardcode for a single queue */
915 pc->rq_bank_hi = 0;
916 pc->rq_bank_lo = 0;
917 pc->rq[0].rq_addr_hi = 0x0;
918 pc->rq[0].rq_addr_lo = sc->ciss_reply_phys;
919
920 return(0);
921}
922
923/************************************************************************
924 * Wait for the adapter to come ready.
925 */
926static int
927ciss_wait_adapter(struct ciss_softc *sc)
928{
929 int i;
930
931 debug_called(1);
932
933 /*
934 * Wait for the adapter to come ready.
935 */
936 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) {
937 ciss_printf(sc, "waiting for adapter to come ready...\n");
938 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) {
939 DELAY(1000000); /* one second */
940 if (i > 30) {
941 ciss_printf(sc, "timed out waiting for adapter to come ready\n");
942 return(EIO);
943 }
944 }
945 }
946 return(0);
947}
948
949/************************************************************************
950 * Flush the adapter cache.
951 */
952static int
953ciss_flush_adapter(struct ciss_softc *sc)
954{
955 struct ciss_request *cr;
956 struct ciss_bmic_flush_cache *cbfc;
957 int error, command_status;
958
959 debug_called(1);
960
961 cr = NULL;
962 cbfc = NULL;
963
964 /*
965 * Build a BMIC request to flush the cache. We don't disable
966 * it, as we may be going to do more I/O (eg. we are emulating
967 * the Synchronise Cache command).
968 */
969 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
970 error = ENOMEM;
971 goto out;
972 }
973 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE,
974 (void **)&cbfc, sizeof(*cbfc))) != 0)
975 goto out;
976
977 /*
978 * Submit the request and wait for it to complete.
979 */
980 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
981 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error);
982 goto out;
983 }
984
985 /*
986 * Check response.
987 */
988 ciss_report_request(cr, &command_status, NULL);
989 switch(command_status) {
990 case CISS_CMD_STATUS_SUCCESS:
991 break;
992 default:
993 ciss_printf(sc, "error flushing cache (%s)\n",
994 ciss_name_command_status(command_status));
995 error = EIO;
996 goto out;
997 }
998
999out:
1000 if (cbfc != NULL)
1001 free(cbfc, CISS_MALLOC_CLASS);
1002 if (cr != NULL)
1003 ciss_release_request(cr);
1004 return(error);
1005}
1006
1007static void
1008ciss_soft_reset(struct ciss_softc *sc)
1009{
1010 struct ciss_request *cr = NULL;
1011 struct ciss_command *cc;
1012 int i, error = 0;
1013
1014 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1015 /* only reset proxy controllers */
1016 if (sc->ciss_controllers[i].physical.bus == 0)
1017 continue;
1018
1019 if ((error = ciss_get_request(sc, &cr)) != 0)
1020 break;
1021
1022 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET,
1023 NULL, 0)) != 0)
1024 break;
1025
1026 cc = CISS_FIND_COMMAND(cr);
1027 cc->header.address = sc->ciss_controllers[i];
1028
1029 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0)
1030 break;
1031
1032 ciss_release_request(cr);
1033 }
1034
1035 if (error)
1036 ciss_printf(sc, "error resetting controller (%d)\n", error);
1037
1038 if (cr != NULL)
1039 ciss_release_request(cr);
1040}
1041
1042/************************************************************************
1043 * Allocate memory for the adapter command structures, initialise
1044 * the request structures.
1045 *
1046 * Note that the entire set of commands are allocated in a single
1047 * contiguous slab.
1048 */
1049static int
1050ciss_init_requests(struct ciss_softc *sc)
1051{
1052 struct ciss_request *cr;
1053 int i;
1054
1055 debug_called(1);
1056
1057 if (bootverbose)
1058 ciss_printf(sc, "using %d of %d available commands\n",
1059 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands);
1060
1061 /*
1062 * Create the DMA tag for commands.
1063 */
1064 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
1065 32, 0, /* alignment, boundary */
1066 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1067 BUS_SPACE_MAXADDR, /* highaddr */
1068 NULL, NULL, /* filter, filterarg */
1069 CISS_COMMAND_ALLOC_SIZE *
1070 sc->ciss_max_requests, 1, /* maxsize, nsegments */
1071 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1072 0, /* flags */
1073 NULL, NULL, /* lockfunc, lockarg */
1074 &sc->ciss_command_dmat)) {
1075 ciss_printf(sc, "can't allocate command DMA tag\n");
1076 return(ENOMEM);
1077 }
1078 /*
1079 * Allocate memory and make it available for DMA.
1080 */
1081 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command,
1082 BUS_DMA_NOWAIT, &sc->ciss_command_map)) {
1083 ciss_printf(sc, "can't allocate command memory\n");
1084 return(ENOMEM);
1085 }
1086 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map,sc->ciss_command,
1087 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests,
1088 ciss_command_map_helper, &sc->ciss_command_phys, 0);
1089 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests);
1090
1091 /*
1092 * Set up the request and command structures, push requests onto
1093 * the free queue.
1094 */
1095 for (i = 1; i < sc->ciss_max_requests; i++) {
1096 cr = &sc->ciss_request[i];
1097 cr->cr_sc = sc;
1098 cr->cr_tag = i;
1099 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap);
1100 ciss_enqueue_free(cr);
1101 }
1102 return(0);
1103}
1104
1105static void
1106ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1107{
1108 uint32_t *addr;
1109
1110 addr = arg;
1111 *addr = segs[0].ds_addr;
1112}
1113
1114/************************************************************************
1115 * Identify the adapter, print some information about it.
1116 */
1117static int
1118ciss_identify_adapter(struct ciss_softc *sc)
1119{
1120 struct ciss_request *cr;
1121 int error, command_status;
1122
1123 debug_called(1);
1124
1125 cr = NULL;
1126
1127 /*
1128 * Get a request, allocate storage for the adapter data.
1129 */
1130 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR,
1131 (void **)&sc->ciss_id,
1132 sizeof(*sc->ciss_id))) != 0)
1133 goto out;
1134
1135 /*
1136 * Submit the request and wait for it to complete.
1137 */
1138 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1139 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error);
1140 goto out;
1141 }
1142
1143 /*
1144 * Check response.
1145 */
1146 ciss_report_request(cr, &command_status, NULL);
1147 switch(command_status) {
1148 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1149 break;
1150 case CISS_CMD_STATUS_DATA_UNDERRUN:
1151 case CISS_CMD_STATUS_DATA_OVERRUN:
1152 ciss_printf(sc, "data over/underrun reading adapter information\n");
1153 default:
1154 ciss_printf(sc, "error reading adapter information (%s)\n",
1155 ciss_name_command_status(command_status));
1156 error = EIO;
1157 goto out;
1158 }
1159
1160 /* sanity-check reply */
1161 if (!sc->ciss_id->big_map_supported) {
1162 ciss_printf(sc, "adapter does not support BIG_MAP\n");
1163 error = ENXIO;
1164 goto out;
1165 }
1166
1167#if 0
1168 /* XXX later revisions may not need this */
1169 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH;
1170#endif
1171
1172 /* XXX only really required for old 5300 adapters? */
1173 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT;
1174
1175 /* print information */
1176 if (bootverbose) {
1177#if 0 /* XXX proxy volumes??? */
1178 ciss_printf(sc, " %d logical drive%s configured\n",
1179 sc->ciss_id->configured_logical_drives,
1180 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s");
1181#endif
1182 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision);
1183 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count);
1184
1185 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature);
1186 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence);
1187 ciss_printf(sc, " supported I/O methods 0x%b\n",
1188 sc->ciss_cfg->supported_methods,
1189 "\20\1READY\2simple\3performant\4MEMQ\n");
1190 ciss_printf(sc, " active I/O method 0x%b\n",
1191 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n");
1192 ciss_printf(sc, " 4G page base 0x%08x\n",
1193 sc->ciss_cfg->command_physlimit);
1194 ciss_printf(sc, " interrupt coalesce delay %dus\n",
1195 sc->ciss_cfg->interrupt_coalesce_delay);
1196 ciss_printf(sc, " interrupt coalesce count %d\n",
1197 sc->ciss_cfg->interrupt_coalesce_count);
1198 ciss_printf(sc, " max outstanding commands %d\n",
1199 sc->ciss_cfg->max_outstanding_commands);
1200 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types,
1201 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n");
1202 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name);
1203 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat);
1204 }
1205
1206out:
1207 if (error) {
1208 if (sc->ciss_id != NULL) {
1209 free(sc->ciss_id, CISS_MALLOC_CLASS);
1210 sc->ciss_id = NULL;
1211 }
1212 }
1213 if (cr != NULL)
1214 ciss_release_request(cr);
1215 return(error);
1216}
1217
1218/************************************************************************
1219 * Helper routine for generating a list of logical and physical luns.
1220 */
1221static struct ciss_lun_report *
1222ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits)
1223{
1224 struct ciss_request *cr;
1225 struct ciss_command *cc;
1226 struct ciss_report_cdb *crc;
1227 struct ciss_lun_report *cll;
1228 int command_status;
1229 int report_size;
1230 int error = 0;
1231
1232 debug_called(1);
1233
1234 cr = NULL;
1235 cll = NULL;
1236
1237 /*
1238 * Get a request, allocate storage for the address list.
1239 */
1240 if ((error = ciss_get_request(sc, &cr)) != 0)
1241 goto out;
1242 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address);
1243 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1244 ciss_printf(sc, "can't allocate memory for lun report\n");
1245 error = ENOMEM;
1246 goto out;
1247 }
1248
1249 /*
1250 * Build the Report Logical/Physical LUNs command.
1251 */
1252 cc = CISS_FIND_COMMAND(cr);
1253 cr->cr_data = cll;
1254 cr->cr_length = report_size;
1255 cr->cr_flags = CISS_REQ_DATAIN;
1256
1257 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
1258 cc->header.address.physical.bus = 0;
1259 cc->header.address.physical.target = 0;
1260 cc->cdb.cdb_length = sizeof(*crc);
1261 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1262 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1263 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1264 cc->cdb.timeout = 30; /* XXX better suggestions? */
1265
1266 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]);
1267 bzero(crc, sizeof(*crc));
1268 crc->opcode = opcode;
1269 crc->length = htonl(report_size); /* big-endian field */
1270 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */
1271
1272 /*
1273 * Submit the request and wait for it to complete. (timeout
1274 * here should be much greater than above)
1275 */
1276 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1277 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error);
1278 goto out;
1279 }
1280
1281 /*
1282 * Check response. Note that data over/underrun is OK.
1283 */
1284 ciss_report_request(cr, &command_status, NULL);
1285 switch(command_status) {
1286 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1287 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */
1288 break;
1289 case CISS_CMD_STATUS_DATA_OVERRUN:
1290 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n",
1291 CISS_MAX_LOGICAL);
1292 break;
1293 default:
1294 ciss_printf(sc, "error detecting logical drive configuration (%s)\n",
1295 ciss_name_command_status(command_status));
1296 error = EIO;
1297 goto out;
1298 }
1299 ciss_release_request(cr);
1300 cr = NULL;
1301
1302out:
1303 if (cr != NULL)
1304 ciss_release_request(cr);
1305 if (error && cll != NULL) {
1306 free(cll, CISS_MALLOC_CLASS);
1307 cll = NULL;
1308 }
1309 return(cll);
1310}
1311
1312/************************************************************************
1313 * Find logical drives on the adapter.
1314 */
1315static int
1316ciss_init_logical(struct ciss_softc *sc)
1317{
1318 struct ciss_lun_report *cll;
1319 int error = 0, i, j;
1320 int ndrives;
1321
1322 debug_called(1);
1323
1324 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
1325 CISS_MAX_LOGICAL);
1326 if (cll == NULL) {
1327 error = ENXIO;
1328 goto out;
1329 }
1330
1331 /* sanity-check reply */
1332 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1333 if ((ndrives < 0) || (ndrives >= CISS_MAX_LOGICAL)) {
1334 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n",
1335 ndrives, CISS_MAX_LOGICAL);
1336 error = ENXIO;
1337 goto out;
1338 }
1339
1340 /*
1341 * Save logical drive information.
1342 */
1343 if (bootverbose) {
1344 ciss_printf(sc, "%d logical drive%s\n",
1345 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : "");
1346 }
1347
1348 sc->ciss_logical =
1349 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *),
1350 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1351 if (sc->ciss_logical == NULL) {
1352 error = ENXIO;
1353 goto out;
1354 }
1355
1356 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1357 sc->ciss_logical[i] =
1358 malloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive),
1359 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1360 if (sc->ciss_logical[i] == NULL) {
1361 error = ENXIO;
1362 goto out;
1363 }
1364
1365 for (j = 0; j < CISS_MAX_LOGICAL; j++)
1366 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT;
1367 }
1368
1369
1370 for (i = 0; i < CISS_MAX_LOGICAL; i++) {
1371 if (i < ndrives) {
1372 struct ciss_ldrive *ld;
1373 int bus, target;
1374
1375 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
1376 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
1377 ld = &sc->ciss_logical[bus][target];
1378
1379 ld->cl_address = cll->lun[i];
1380 ld->cl_controller = &sc->ciss_controllers[bus];
1381 if (ciss_identify_logical(sc, ld) != 0)
1382 continue;
1383 /*
1384 * If the drive has had media exchanged, we should bring it online.
1385 */
1386 if (ld->cl_lstatus->media_exchanged)
1387 ciss_accept_media(sc, ld);
1388
1389 }
1390 }
1391
1392 out:
1393 if (cll != NULL)
1394 free(cll, CISS_MALLOC_CLASS);
1395 return(error);
1396}
1397
1398static int
1399ciss_init_physical(struct ciss_softc *sc)
1400{
1401 struct ciss_lun_report *cll;
1402 int error = 0, i;
1403 int nphys;
1404 int bus, target;
1405
1406 debug_called(1);
1407
1408 bus = 0;
1409 target = 0;
1410
1411 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
1412 CISS_MAX_PHYSICAL);
1413 if (cll == NULL) {
1414 error = ENXIO;
1415 goto out;
1416 }
1417
1418 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1419
1420 if (bootverbose) {
1421 ciss_printf(sc, "%d physical device%s\n",
1422 nphys, (nphys > 1 || nphys == 0) ? "s" : "");
1423 }
1424
1425 /*
1426 * Figure out the bus mapping.
1427 * Logical buses include both the local logical bus for local arrays and
1428 * proxy buses for remote arrays. Physical buses are numbered by the
1429 * controller and represent physical buses that hold physical devices.
1430 * We shift these bus numbers so that everything fits into a single flat
1431 * numbering space for CAM. Logical buses occupy the first 32 CAM bus
1432 * numbers, and the physical bus numbers are shifted to be above that.
1433 * This results in the various driver arrays being indexed as follows:
1434 *
1435 * ciss_controllers[] - indexed by logical bus
1436 * ciss_cam_sim[] - indexed by both logical and physical, with physical
1437 * being shifted by 32.
1438 * ciss_logical[][] - indexed by logical bus
1439 * ciss_physical[][] - indexed by physical bus
1440 *
1441 * XXX This is getting more and more hackish. CISS really doesn't play
1442 * well with a standard SCSI model; devices are addressed via magic
1443 * cookies, not via b/t/l addresses. Since there is no way to store
1444 * the cookie in the CAM device object, we have to keep these lookup
1445 * tables handy so that the devices can be found quickly at the cost
1446 * of wasting memory and having a convoluted lookup scheme. This
1447 * driver should probably be converted to block interface.
1448 */
1449 /*
1450 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy
1451 * controller. A proxy controller is another physical controller
1452 * behind the primary PCI controller. We need to know about this
1453 * so that BMIC commands can be properly targeted. There can be
1454 * proxy controllers attached to a single PCI controller, so
1455 * find the highest numbered one so the array can be properly
1456 * sized.
1457 */
1458 sc->ciss_max_logical_bus = 1;
1459 for (i = 0; i < nphys; i++) {
1460 if (cll->lun[i].physical.extra_address == 0) {
1461 bus = cll->lun[i].physical.bus;
1462 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1;
1463 } else {
1464 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address);
1465 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus);
1466 }
1467 }
1468
1469 sc->ciss_controllers =
1470 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address),
1471 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1472
1473 if (sc->ciss_controllers == NULL) {
1474 ciss_printf(sc, "Could not allocate memory for controller map\n");
1475 error = ENOMEM;
1476 goto out;
1477 }
1478
1479 /* setup a map of controller addresses */
1480 for (i = 0; i < nphys; i++) {
1481 if (cll->lun[i].physical.extra_address == 0) {
1482 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i];
1483 }
1484 }
1485
1486 sc->ciss_physical =
1487 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *),
1488 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1489 if (sc->ciss_physical == NULL) {
1490 ciss_printf(sc, "Could not allocate memory for physical device map\n");
1491 error = ENOMEM;
1492 goto out;
1493 }
1494
1495 for (i = 0; i < sc->ciss_max_physical_bus; i++) {
1496 sc->ciss_physical[i] =
1497 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT,
1498 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1499 if (sc->ciss_physical[i] == NULL) {
1500 ciss_printf(sc, "Could not allocate memory for target map\n");
1501 error = ENOMEM;
1502 goto out;
1503 }
1504 }
1505
1506 ciss_filter_physical(sc, cll);
1507
1508out:
1509 if (cll != NULL)
1510 free(cll, CISS_MALLOC_CLASS);
1511
1512 return(error);
1513}
1514
1515static int
1516ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll)
1517{
1518 u_int32_t ea;
1519 int i, nphys;
1520 int bus, target;
1521
1522 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1523 for (i = 0; i < nphys; i++) {
1524 if (cll->lun[i].physical.extra_address == 0)
1525 continue;
1526
1527 /*
1528 * Filter out devices that we don't want. Level 3 LUNs could
1529 * probably be supported, but the docs don't give enough of a
1530 * hint to know how.
1531 *
1532 * The mode field of the physical address is likely set to have
1533 * hard disks masked out. Honor it unless the user has overridden
1534 * us with the tunable. We also munge the inquiry data for these
1535 * disks so that they only show up as passthrough devices. Keeping
1536 * them visible in this fashion is useful for doing things like
1537 * flashing firmware.
1538 */
1539 ea = cll->lun[i].physical.extra_address;
1540 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) ||
1541 (CISS_EXTRA_MODE2(ea) == 0x3))
1542 continue;
1543 if ((ciss_expose_hidden_physical == 0) &&
1544 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL))
1545 continue;
1546
1547 /*
1548 * Note: CISS firmware numbers physical busses starting at '1', not
1549 * '0'. This numbering is internal to the firmware and is only
1550 * used as a hint here.
1551 */
1552 bus = CISS_EXTRA_BUS2(ea) - 1;
1553 target = CISS_EXTRA_TARGET2(ea);
1554 sc->ciss_physical[bus][target].cp_address = cll->lun[i];
1555 sc->ciss_physical[bus][target].cp_online = 1;
1556 }
1557
1558 return (0);
1559}
1560
1561static int
1562ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1563{
1564 struct ciss_request *cr;
1565 struct ciss_command *cc;
1566 struct scsi_inquiry *inq;
1567 int error;
1568 int command_status;
1569
1570 cr = NULL;
1571
1572 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry));
1573
1574 if ((error = ciss_get_request(sc, &cr)) != 0)
1575 goto out;
1576
1577 cc = CISS_FIND_COMMAND(cr);
1578 cr->cr_data = &ld->cl_geometry;
1579 cr->cr_length = sizeof(ld->cl_geometry);
1580 cr->cr_flags = CISS_REQ_DATAIN;
1581
1582 cc->header.address = ld->cl_address;
1583 cc->cdb.cdb_length = 6;
1584 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1585 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1586 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1587 cc->cdb.timeout = 30;
1588
1589 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]);
1590 inq->opcode = INQUIRY;
1591 inq->byte2 = SI_EVPD;
1592 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY;
1593 inq->length = sizeof(ld->cl_geometry);
1594
1595 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1596 ciss_printf(sc, "error getting geometry (%d)\n", error);
1597 goto out;
1598 }
1599
1600 ciss_report_request(cr, &command_status, NULL);
1601 switch(command_status) {
1602 case CISS_CMD_STATUS_SUCCESS:
1603 case CISS_CMD_STATUS_DATA_UNDERRUN:
1604 break;
1605 case CISS_CMD_STATUS_DATA_OVERRUN:
1606 ciss_printf(sc, "WARNING: Data overrun\n");
1607 break;
1608 default:
1609 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n",
1610 ciss_name_command_status(command_status));
1611 break;
1612 }
1613
1614out:
1615 if (cr != NULL)
1616 ciss_release_request(cr);
1617 return(error);
1618}
1619/************************************************************************
1620 * Identify a logical drive, initialise state related to it.
1621 */
1622static int
1623ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1624{
1625 struct ciss_request *cr;
1626 struct ciss_command *cc;
1627 struct ciss_bmic_cdb *cbc;
1628 int error, command_status;
1629
1630 debug_called(1);
1631
1632 cr = NULL;
1633
1634 /*
1635 * Build a BMIC request to fetch the drive ID.
1636 */
1637 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE,
1638 (void **)&ld->cl_ldrive,
1639 sizeof(*ld->cl_ldrive))) != 0)
1640 goto out;
1641 cc = CISS_FIND_COMMAND(cr);
1642 cc->header.address = *ld->cl_controller; /* target controller */
1643 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1644 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1645
1646 /*
1647 * Submit the request and wait for it to complete.
1648 */
1649 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1650 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error);
1651 goto out;
1652 }
1653
1654 /*
1655 * Check response.
1656 */
1657 ciss_report_request(cr, &command_status, NULL);
1658 switch(command_status) {
1659 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1660 break;
1661 case CISS_CMD_STATUS_DATA_UNDERRUN:
1662 case CISS_CMD_STATUS_DATA_OVERRUN:
1663 ciss_printf(sc, "data over/underrun reading logical drive ID\n");
1664 default:
1665 ciss_printf(sc, "error reading logical drive ID (%s)\n",
1666 ciss_name_command_status(command_status));
1667 error = EIO;
1668 goto out;
1669 }
1670 ciss_release_request(cr);
1671 cr = NULL;
1672
1673 /*
1674 * Build a CISS BMIC command to get the logical drive status.
1675 */
1676 if ((error = ciss_get_ldrive_status(sc, ld)) != 0)
1677 goto out;
1678
1679 /*
1680 * Get the logical drive geometry.
1681 */
1682 if ((error = ciss_inquiry_logical(sc, ld)) != 0)
1683 goto out;
1684
1685 /*
1686 * Print the drive's basic characteristics.
1687 */
1688 if (bootverbose) {
1689 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ",
1690 CISS_LUN_TO_BUS(ld->cl_address.logical.lun),
1691 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun),
1692 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance),
1693 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) *
1694 ld->cl_ldrive->block_size));
1695
1696 ciss_print_ldrive(sc, ld);
1697 }
1698out:
1699 if (error != 0) {
1700 /* make the drive not-exist */
1701 ld->cl_status = CISS_LD_NONEXISTENT;
1702 if (ld->cl_ldrive != NULL) {
1703 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
1704 ld->cl_ldrive = NULL;
1705 }
1706 if (ld->cl_lstatus != NULL) {
1707 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
1708 ld->cl_lstatus = NULL;
1709 }
1710 }
1711 if (cr != NULL)
1712 ciss_release_request(cr);
1713
1714 return(error);
1715}
1716
1717/************************************************************************
1718 * Get status for a logical drive.
1719 *
1720 * XXX should we also do this in response to Test Unit Ready?
1721 */
1722static int
1723ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld)
1724{
1725 struct ciss_request *cr;
1726 struct ciss_command *cc;
1727 struct ciss_bmic_cdb *cbc;
1728 int error, command_status;
1729
1730 /*
1731 * Build a CISS BMIC command to get the logical drive status.
1732 */
1733 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS,
1734 (void **)&ld->cl_lstatus,
1735 sizeof(*ld->cl_lstatus))) != 0)
1736 goto out;
1737 cc = CISS_FIND_COMMAND(cr);
1738 cc->header.address = *ld->cl_controller; /* target controller */
1739 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1740 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1741
1742 /*
1743 * Submit the request and wait for it to complete.
1744 */
1745 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1746 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error);
1747 goto out;
1748 }
1749
1750 /*
1751 * Check response.
1752 */
1753 ciss_report_request(cr, &command_status, NULL);
1754 switch(command_status) {
1755 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1756 break;
1757 case CISS_CMD_STATUS_DATA_UNDERRUN:
1758 case CISS_CMD_STATUS_DATA_OVERRUN:
1759 ciss_printf(sc, "data over/underrun reading logical drive status\n");
1760 default:
1761 ciss_printf(sc, "error reading logical drive status (%s)\n",
1762 ciss_name_command_status(command_status));
1763 error = EIO;
1764 goto out;
1765 }
1766
1767 /*
1768 * Set the drive's summary status based on the returned status.
1769 *
1770 * XXX testing shows that a failed JBOD drive comes back at next
1771 * boot in "queued for expansion" mode. WTF?
1772 */
1773 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status);
1774
1775out:
1776 if (cr != NULL)
1777 ciss_release_request(cr);
1778 return(error);
1779}
1780
1781/************************************************************************
1782 * Notify the adapter of a config update.
1783 */
1784static int
1785ciss_update_config(struct ciss_softc *sc)
1786{
1787 int i;
1788
1789 debug_called(1);
1790
1791 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE);
1792 for (i = 0; i < 1000; i++) {
1793 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) &
1794 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) {
1795 return(0);
1796 }
1797 DELAY(1000);
1798 }
1799 return(1);
1800}
1801
1802/************************************************************************
1803 * Accept new media into a logical drive.
1804 *
1805 * XXX The drive has previously been offline; it would be good if we
1806 * could make sure it's not open right now.
1807 */
1808static int
1809ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld)
1810{
1811 struct ciss_request *cr;
1812 struct ciss_command *cc;
1813 struct ciss_bmic_cdb *cbc;
1814 int command_status;
1815 int error = 0, ldrive;
1816
1817 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1818
1819 debug(0, "bringing logical drive %d back online");
1820
1821 /*
1822 * Build a CISS BMIC command to bring the drive back online.
1823 */
1824 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA,
1825 NULL, 0)) != 0)
1826 goto out;
1827 cc = CISS_FIND_COMMAND(cr);
1828 cc->header.address = *ld->cl_controller; /* target controller */
1829 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1830 cbc->log_drive = ldrive;
1831
1832 /*
1833 * Submit the request and wait for it to complete.
1834 */
1835 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1836 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error);
1837 goto out;
1838 }
1839
1840 /*
1841 * Check response.
1842 */
1843 ciss_report_request(cr, &command_status, NULL);
1844 switch(command_status) {
1845 case CISS_CMD_STATUS_SUCCESS: /* all OK */
1846 /* we should get a logical drive status changed event here */
1847 break;
1848 default:
1849 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n",
1850 ciss_name_command_status(command_status));
1851 break;
1852 }
1853
1854out:
1855 if (cr != NULL)
1856 ciss_release_request(cr);
1857 return(error);
1858}
1859
1860/************************************************************************
1861 * Release adapter resources.
1862 */
1863static void
1864ciss_free(struct ciss_softc *sc)
1865{
1866 struct ciss_request *cr;
1867 int i, j;
1868
1869 debug_called(1);
1870
1871 /* we're going away */
1872 sc->ciss_flags |= CISS_FLAG_ABORTING;
1873
1874 /* terminate the periodic heartbeat routine */
1875 callout_stop(&sc->ciss_periodic);
1876
1877 /* cancel the Event Notify chain */
1878 ciss_notify_abort(sc);
1879
1880 ciss_kill_notify_thread(sc);
1881
1882 /* disconnect from CAM */
1883 if (sc->ciss_cam_sim) {
1884 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1885 if (sc->ciss_cam_sim[i]) {
1886 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1887 cam_sim_free(sc->ciss_cam_sim[i], 0);
1888 }
1889 }
1890 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
1891 CISS_PHYSICAL_BASE; i++) {
1892 if (sc->ciss_cam_sim[i]) {
1893 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1894 cam_sim_free(sc->ciss_cam_sim[i], 0);
1895 }
1896 }
1897 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS);
1898 }
1899 if (sc->ciss_cam_devq)
1900 cam_simq_free(sc->ciss_cam_devq);
1901
1902 /* remove the control device */
1903 mtx_unlock(&sc->ciss_mtx);
1904 if (sc->ciss_dev_t != NULL)
1905 destroy_dev(sc->ciss_dev_t);
1906
1907 /* Final cleanup of the callout. */
1908 callout_drain(&sc->ciss_periodic);
1909 mtx_destroy(&sc->ciss_mtx);
1910
1911 /* free the controller data */
1912 if (sc->ciss_id != NULL)
1913 free(sc->ciss_id, CISS_MALLOC_CLASS);
1914
1915 /* release I/O resources */
1916 if (sc->ciss_regs_resource != NULL)
1917 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1918 sc->ciss_regs_rid, sc->ciss_regs_resource);
1919 if (sc->ciss_cfg_resource != NULL)
1920 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1921 sc->ciss_cfg_rid, sc->ciss_cfg_resource);
1922 if (sc->ciss_intr != NULL)
1923 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr);
1924 if (sc->ciss_irq_resource != NULL)
1925 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ,
1926 sc->ciss_irq_rid[0], sc->ciss_irq_resource);
1927 if (sc->ciss_msi)
1928 pci_release_msi(sc->ciss_dev);
1929
1930 while ((cr = ciss_dequeue_free(sc)) != NULL)
1931 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap);
1932 if (sc->ciss_buffer_dmat)
1933 bus_dma_tag_destroy(sc->ciss_buffer_dmat);
1934
1935 /* destroy command memory and DMA tag */
1936 if (sc->ciss_command != NULL) {
1937 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map);
1938 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map);
1939 }
1940 if (sc->ciss_command_dmat)
1941 bus_dma_tag_destroy(sc->ciss_command_dmat);
1942
1943 if (sc->ciss_reply) {
1944 bus_dmamap_unload(sc->ciss_reply_dmat, sc->ciss_reply_map);
1945 bus_dmamem_free(sc->ciss_reply_dmat, sc->ciss_reply, sc->ciss_reply_map);
1946 }
1947 if (sc->ciss_reply_dmat)
1948 bus_dma_tag_destroy(sc->ciss_reply_dmat);
1949
1950 /* destroy DMA tags */
1951 if (sc->ciss_parent_dmat)
1952 bus_dma_tag_destroy(sc->ciss_parent_dmat);
1953 if (sc->ciss_logical) {
1954 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1955 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
1956 if (sc->ciss_logical[i][j].cl_ldrive)
1957 free(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS);
1958 if (sc->ciss_logical[i][j].cl_lstatus)
1959 free(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS);
1960 }
1961 free(sc->ciss_logical[i], CISS_MALLOC_CLASS);
1962 }
1963 free(sc->ciss_logical, CISS_MALLOC_CLASS);
1964 }
1965
1966 if (sc->ciss_physical) {
1967 for (i = 0; i < sc->ciss_max_physical_bus; i++)
1968 free(sc->ciss_physical[i], CISS_MALLOC_CLASS);
1969 free(sc->ciss_physical, CISS_MALLOC_CLASS);
1970 }
1971
1972 if (sc->ciss_controllers)
1973 free(sc->ciss_controllers, CISS_MALLOC_CLASS);
1974
1975}
1976
1977/************************************************************************
1978 * Give a command to the adapter.
1979 *
1980 * Note that this uses the simple transport layer directly. If we
1981 * want to add support for other layers, we'll need a switch of some
1982 * sort.
1983 *
1984 * Note that the simple transport layer has no way of refusing a
1985 * command; we only have as many request structures as the adapter
1986 * supports commands, so we don't have to check (this presumes that
1987 * the adapter can handle commands as fast as we throw them at it).
1988 */
1989static int
1990ciss_start(struct ciss_request *cr)
1991{
1992 struct ciss_command *cc; /* XXX debugging only */
1993 int error;
1994
1995 cc = CISS_FIND_COMMAND(cr);
1996 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag);
1997
1998 /*
1999 * Map the request's data.
2000 */
2001 if ((error = ciss_map_request(cr)))
2002 return(error);
2003
2004#if 0
2005 ciss_print_request(cr);
2006#endif
2007
2008 return(0);
2009}
2010
2011/************************************************************************
2012 * Fetch completed request(s) from the adapter, queue them for
2013 * completion handling.
2014 *
2015 * Note that this uses the simple transport layer directly. If we
2016 * want to add support for other layers, we'll need a switch of some
2017 * sort.
2018 *
2019 * Note that the simple transport mechanism does not require any
2020 * reentrancy protection; the OPQ read is atomic. If there is a
2021 * chance of a race with something else that might move the request
2022 * off the busy list, then we will have to lock against that
2023 * (eg. timeouts, etc.)
2024 */
2025static void
2026ciss_done(struct ciss_softc *sc, cr_qhead_t *qh)
2027{
2028 struct ciss_request *cr;
2029 struct ciss_command *cc;
2030 u_int32_t tag, index;
2031
2032 debug_called(3);
2033
2034 /*
2035 * Loop quickly taking requests from the adapter and moving them
2036 * to the completed queue.
2037 */
2038 for (;;) {
2039
2040 tag = CISS_TL_SIMPLE_FETCH_CMD(sc);
2041 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY)
2042 break;
2043 index = tag >> 2;
2044 debug(2, "completed command %d%s", index,
2045 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2046 if (index >= sc->ciss_max_requests) {
2047 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2048 continue;
2049 }
2050 cr = &(sc->ciss_request[index]);
2051 cc = CISS_FIND_COMMAND(cr);
2052 cc->header.host_tag = tag; /* not updated by adapter */
2053 ciss_enqueue_complete(cr, qh);
2054 }
2055
2056}
2057
2058static void
2059ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh)
2060{
2061 struct ciss_request *cr;
2062 struct ciss_command *cc;
2063 u_int32_t tag, index;
2064
2065 debug_called(3);
2066
2067 /*
2068 * Loop quickly taking requests from the adapter and moving them
2069 * to the completed queue.
2070 */
2071 for (;;) {
2072 tag = sc->ciss_reply[sc->ciss_rqidx];
2073 if ((tag & CISS_CYCLE_MASK) != sc->ciss_cycle)
2074 break;
2075 index = tag >> 2;
2076 debug(2, "completed command %d%s\n", index,
2077 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2078 if (index < sc->ciss_max_requests) {
2079 cr = &(sc->ciss_request[index]);
2080 cc = CISS_FIND_COMMAND(cr);
2081 cc->header.host_tag = tag; /* not updated by adapter */
2082 ciss_enqueue_complete(cr, qh);
2083 } else {
2084 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2085 }
2086 if (++sc->ciss_rqidx == sc->ciss_max_requests) {
2087 sc->ciss_rqidx = 0;
2088 sc->ciss_cycle ^= 1;
2089 }
2090 }
2091
2092}
2093
2094/************************************************************************
2095 * Take an interrupt from the adapter.
2096 */
2097static void
2098ciss_intr(void *arg)
2099{
2100 cr_qhead_t qh;
2101 struct ciss_softc *sc = (struct ciss_softc *)arg;
2102
2103 /*
2104 * The only interrupt we recognise indicates that there are
2105 * entries in the outbound post queue.
2106 */
2107 STAILQ_INIT(&qh);
2108 ciss_done(sc, &qh);
2109 mtx_lock(&sc->ciss_mtx);
2110 ciss_complete(sc, &qh);
2111 mtx_unlock(&sc->ciss_mtx);
2112}
2113
2114static void
2115ciss_perf_intr(void *arg)
2116{
2117 struct ciss_softc *sc = (struct ciss_softc *)arg;
2118
2119 /* Clear the interrupt and flush the bridges. Docs say that the flush
2120 * needs to be done twice, which doesn't seem right.
2121 */
2122 CISS_TL_PERF_CLEAR_INT(sc);
2123 CISS_TL_PERF_FLUSH_INT(sc);
2124
2125 ciss_perf_msi_intr(sc);
2126}
2127
2128static void
2129ciss_perf_msi_intr(void *arg)
2130{
2131 cr_qhead_t qh;
2132 struct ciss_softc *sc = (struct ciss_softc *)arg;
2133
2134 STAILQ_INIT(&qh);
2135 ciss_perf_done(sc, &qh);
2136 mtx_lock(&sc->ciss_mtx);
2137 ciss_complete(sc, &qh);
2138 mtx_unlock(&sc->ciss_mtx);
2139}
2140
2141
2142/************************************************************************
2143 * Process completed requests.
2144 *
2145 * Requests can be completed in three fashions:
2146 *
2147 * - by invoking a callback function (cr_complete is non-null)
2148 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set)
2149 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context
2150 */
2151static void
2152ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh)
2153{
2154 struct ciss_request *cr;
2155
2156 debug_called(2);
2157
2158 /*
2159 * Loop taking requests off the completed queue and performing
2160 * completion processing on them.
2161 */
2162 for (;;) {
2163 if ((cr = ciss_dequeue_complete(sc, qh)) == NULL)
2164 break;
2165 ciss_unmap_request(cr);
2166
2167 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
2168 ciss_printf(sc, "WARNING: completing non-busy request\n");
2169 cr->cr_flags &= ~CISS_REQ_BUSY;
2170
2171 /*
2172 * If the request has a callback, invoke it.
2173 */
2174 if (cr->cr_complete != NULL) {
2175 cr->cr_complete(cr);
2176 continue;
2177 }
2178
2179 /*
2180 * If someone is sleeping on this request, wake them up.
2181 */
2182 if (cr->cr_flags & CISS_REQ_SLEEP) {
2183 cr->cr_flags &= ~CISS_REQ_SLEEP;
2184 wakeup(cr);
2185 continue;
2186 }
2187
2188 /*
2189 * If someone is polling this request for completion, signal.
2190 */
2191 if (cr->cr_flags & CISS_REQ_POLL) {
2192 cr->cr_flags &= ~CISS_REQ_POLL;
2193 continue;
2194 }
2195
2196 /*
2197 * Give up and throw the request back on the free queue. This
2198 * should never happen; resources will probably be lost.
2199 */
2200 ciss_printf(sc, "WARNING: completed command with no submitter\n");
2201 ciss_enqueue_free(cr);
2202 }
2203}
2204
2205/************************************************************************
2206 * Report on the completion status of a request, and pass back SCSI
2207 * and command status values.
2208 */
2209static int
2210_ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func)
2211{
2212 struct ciss_command *cc;
2213 struct ciss_error_info *ce;
2214
2215 debug_called(2);
2216
2217 cc = CISS_FIND_COMMAND(cr);
2218 ce = (struct ciss_error_info *)&(cc->sg[0]);
2219
2220 /*
2221 * We don't consider data under/overrun an error for the Report
2222 * Logical/Physical LUNs commands.
2223 */
2224 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) &&
2225 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) ||
2226 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) &&
2227 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) ||
2228 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) ||
2229 (cc->cdb.cdb[0] == INQUIRY))) {
2230 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR;
2231 debug(2, "ignoring irrelevant under/overrun error");
2232 }
2233
2234 /*
2235 * Check the command's error bit, if clear, there's no status and
2236 * everything is OK.
2237 */
2238 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) {
2239 if (scsi_status != NULL)
2240 *scsi_status = SCSI_STATUS_OK;
2241 if (command_status != NULL)
2242 *command_status = CISS_CMD_STATUS_SUCCESS;
2243 return(0);
2244 } else {
2245 if (command_status != NULL)
2246 *command_status = ce->command_status;
2247 if (scsi_status != NULL) {
2248 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) {
2249 *scsi_status = ce->scsi_status;
2250 } else {
2251 *scsi_status = -1;
2252 }
2253 }
2254 if (bootverbose)
2255 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n",
2256 ce->command_status, ciss_name_command_status(ce->command_status),
2257 ce->scsi_status);
2258 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) {
2259 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x, function %s\n",
2260 ce->additional_error_info.invalid_command.offense_size,
2261 ce->additional_error_info.invalid_command.offense_offset,
2262 ce->additional_error_info.invalid_command.offense_value,
2263 func);
2264 }
2265 }
2266#if 0
2267 ciss_print_request(cr);
2268#endif
2269 return(1);
2270}
2271
2272/************************************************************************
2273 * Issue a request and don't return until it's completed.
2274 *
2275 * Depending on adapter status, we may poll or sleep waiting for
2276 * completion.
2277 */
2278static int
2279ciss_synch_request(struct ciss_request *cr, int timeout)
2280{
2281 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) {
2282 return(ciss_wait_request(cr, timeout));
2283 } else {
2284 return(ciss_poll_request(cr, timeout));
2285 }
2286}
2287
2288/************************************************************************
2289 * Issue a request and poll for completion.
2290 *
2291 * Timeout in milliseconds.
2292 */
2293static int
2294ciss_poll_request(struct ciss_request *cr, int timeout)
2295{
2296 cr_qhead_t qh;
2297 struct ciss_softc *sc;
2298 int error;
2299
2300 debug_called(2);
2301
2302 STAILQ_INIT(&qh);
2303 sc = cr->cr_sc;
2304 cr->cr_flags |= CISS_REQ_POLL;
2305 if ((error = ciss_start(cr)) != 0)
2306 return(error);
2307
2308 do {
2309 if (sc->ciss_perf)
2310 ciss_perf_done(sc, &qh);
2311 else
2312 ciss_done(sc, &qh);
2313 ciss_complete(sc, &qh);
2314 if (!(cr->cr_flags & CISS_REQ_POLL))
2315 return(0);
2316 DELAY(1000);
2317 } while (timeout-- >= 0);
2318 return(EWOULDBLOCK);
2319}
2320
2321/************************************************************************
2322 * Issue a request and sleep waiting for completion.
2323 *
2324 * Timeout in milliseconds. Note that a spurious wakeup will reset
2325 * the timeout.
2326 */
2327static int
2328ciss_wait_request(struct ciss_request *cr, int timeout)
2329{
2330 int error;
2331
2332 debug_called(2);
2333
2334 cr->cr_flags |= CISS_REQ_SLEEP;
2335 if ((error = ciss_start(cr)) != 0)
2336 return(error);
2337
2338 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
2339 error = msleep(cr, &cr->cr_sc->ciss_mtx, PRIBIO, "cissREQ", (timeout * hz) / 1000);
2340 }
2341 return(error);
2342}
2343
2344#if 0
2345/************************************************************************
2346 * Abort a request. Note that a potential exists here to race the
2347 * request being completed; the caller must deal with this.
2348 */
2349static int
2350ciss_abort_request(struct ciss_request *ar)
2351{
2352 struct ciss_request *cr;
2353 struct ciss_command *cc;
2354 struct ciss_message_cdb *cmc;
2355 int error;
2356
2357 debug_called(1);
2358
2359 /* get a request */
2360 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0)
2361 return(error);
2362
2363 /* build the abort command */
2364 cc = CISS_FIND_COMMAND(cr);
2365 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */
2366 cc->header.address.physical.target = 0;
2367 cc->header.address.physical.bus = 0;
2368 cc->cdb.cdb_length = sizeof(*cmc);
2369 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
2370 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2371 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
2372 cc->cdb.timeout = 30;
2373
2374 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]);
2375 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT;
2376 cmc->type = CISS_MESSAGE_ABORT_TASK;
2377 cmc->abort_tag = ar->cr_tag; /* endianness?? */
2378
2379 /*
2380 * Send the request and wait for a response. If we believe we
2381 * aborted the request OK, clear the flag that indicates it's
2382 * running.
2383 */
2384 error = ciss_synch_request(cr, 35 * 1000);
2385 if (!error)
2386 error = ciss_report_request(cr, NULL, NULL);
2387 ciss_release_request(cr);
2388
2389 return(error);
2390}
2391#endif
2392
2393
2394/************************************************************************
2395 * Fetch and initialise a request
2396 */
2397static int
2398ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp)
2399{
2400 struct ciss_request *cr;
2401
2402 debug_called(2);
2403
2404 /*
2405 * Get a request and clean it up.
2406 */
2407 if ((cr = ciss_dequeue_free(sc)) == NULL)
2408 return(ENOMEM);
2409
2410 cr->cr_data = NULL;
2411 cr->cr_flags = 0;
2412 cr->cr_complete = NULL;
2413 cr->cr_private = NULL;
2414 cr->cr_sg_tag = CISS_SG_MAX; /* Backstop to prevent accidents */
2415
2416 ciss_preen_command(cr);
2417 *crp = cr;
2418 return(0);
2419}
2420
2421static void
2422ciss_preen_command(struct ciss_request *cr)
2423{
2424 struct ciss_command *cc;
2425 u_int32_t cmdphys;
2426
2427 /*
2428 * Clean up the command structure.
2429 *
2430 * Note that we set up the error_info structure here, since the
2431 * length can be overwritten by any command.
2432 */
2433 cc = CISS_FIND_COMMAND(cr);
2434 cc->header.sg_in_list = 0; /* kinda inefficient this way */
2435 cc->header.sg_total = 0;
2436 cc->header.host_tag = cr->cr_tag << 2;
2437 cc->header.host_tag_zeroes = 0;
2438 cmdphys = CISS_FIND_COMMANDPHYS(cr);
2439 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command);
2440 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command);
2441}
2442
2443/************************************************************************
2444 * Release a request to the free list.
2445 */
2446static void
2447ciss_release_request(struct ciss_request *cr)
2448{
2449 struct ciss_softc *sc;
2450
2451 debug_called(2);
2452
2453 sc = cr->cr_sc;
2454
2455 /* release the request to the free queue */
2456 ciss_requeue_free(cr);
2457}
2458
2459/************************************************************************
2460 * Allocate a request that will be used to send a BMIC command. Do some
2461 * of the common setup here to avoid duplicating it everywhere else.
2462 */
2463static int
2464ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
2465 int opcode, void **bufp, size_t bufsize)
2466{
2467 struct ciss_request *cr;
2468 struct ciss_command *cc;
2469 struct ciss_bmic_cdb *cbc;
2470 void *buf;
2471 int error;
2472 int dataout;
2473
2474 debug_called(2);
2475
2476 cr = NULL;
2477 buf = NULL;
2478
2479 /*
2480 * Get a request.
2481 */
2482 if ((error = ciss_get_request(sc, &cr)) != 0)
2483 goto out;
2484
2485 /*
2486 * Allocate data storage if requested, determine the data direction.
2487 */
2488 dataout = 0;
2489 if ((bufsize > 0) && (bufp != NULL)) {
2490 if (*bufp == NULL) {
2491 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
2492 error = ENOMEM;
2493 goto out;
2494 }
2495 } else {
2496 buf = *bufp;
2497 dataout = 1; /* we are given a buffer, so we are writing */
2498 }
2499 }
2500
2501 /*
2502 * Build a CISS BMIC command to get the logical drive ID.
2503 */
2504 cr->cr_data = buf;
2505 cr->cr_length = bufsize;
2506 if (!dataout)
2507 cr->cr_flags = CISS_REQ_DATAIN;
2508
2509 cc = CISS_FIND_COMMAND(cr);
2510 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
2511 cc->header.address.physical.bus = 0;
2512 cc->header.address.physical.target = 0;
2513 cc->cdb.cdb_length = sizeof(*cbc);
2514 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2515 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2516 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ;
2517 cc->cdb.timeout = 0;
2518
2519 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
2520 bzero(cbc, sizeof(*cbc));
2521 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ;
2522 cbc->bmic_opcode = opcode;
2523 cbc->size = htons((u_int16_t)bufsize);
2524
2525out:
2526 if (error) {
2527 if (cr != NULL)
2528 ciss_release_request(cr);
2529 } else {
2530 *crp = cr;
2531 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
2532 *bufp = buf;
2533 }
2534 return(error);
2535}
2536
2537/************************************************************************
2538 * Handle a command passed in from userspace.
2539 */
2540static int
2541ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc)
2542{
2543 struct ciss_request *cr;
2544 struct ciss_command *cc;
2545 struct ciss_error_info *ce;
2546 int error = 0;
2547
2548 debug_called(1);
2549
2550 cr = NULL;
2551
2552 /*
2553 * Get a request.
2554 */
2555 while (ciss_get_request(sc, &cr) != 0)
2556 msleep(sc, &sc->ciss_mtx, PPAUSE, "cissREQ", hz);
2557 cc = CISS_FIND_COMMAND(cr);
2558
2559 /*
2560 * Allocate an in-kernel databuffer if required, copy in user data.
2561 */
2562 cr->cr_length = ioc->buf_size;
2563 if (ioc->buf_size > 0) {
2564 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
2565 error = ENOMEM;
2566 goto out;
2567 }
2568 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) {
2569 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2570 goto out;
2571 }
2572 }
2573
2574 /*
2575 * Build the request based on the user command.
2576 */
2577 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address));
2578 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb));
2579
2580 /* XXX anything else to populate here? */
2581
2582 /*
2583 * Run the command.
2584 */
2585 if ((error = ciss_synch_request(cr, 60 * 1000))) {
2586 debug(0, "request failed - %d", error);
2587 goto out;
2588 }
2589
2590 /*
2591 * Check to see if the command succeeded.
2592 */
2593 ce = (struct ciss_error_info *)&(cc->sg[0]);
2594 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0)
2595 bzero(ce, sizeof(*ce));
2596
2597 /*
2598 * Copy the results back to the user.
2599 */
2600 bcopy(ce, &ioc->error_info, sizeof(*ce));
2601 if ((ioc->buf_size > 0) &&
2602 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) {
2603 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2604 goto out;
2605 }
2606
2607 /* done OK */
2608 error = 0;
2609
2610out:
2611 if ((cr != NULL) && (cr->cr_data != NULL))
2612 free(cr->cr_data, CISS_MALLOC_CLASS);
2613 if (cr != NULL)
2614 ciss_release_request(cr);
2615 return(error);
2616}
2617
2618/************************************************************************
2619 * Map a request into bus-visible space, initialise the scatter/gather
2620 * list.
2621 */
2622static int
2623ciss_map_request(struct ciss_request *cr)
2624{
2625 struct ciss_softc *sc;
2626 int error = 0;
2627
2628 debug_called(2);
2629
2630 sc = cr->cr_sc;
2631
2632 /* check that mapping is necessary */
2633 if (cr->cr_flags & CISS_REQ_MAPPED)
2634 return(0);
2635
2636 cr->cr_flags |= CISS_REQ_MAPPED;
2637
2638 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2639 BUS_DMASYNC_PREWRITE);
2640
2641 if (cr->cr_data != NULL) {
2642 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap,
2643 cr->cr_data, cr->cr_length,
2644 ciss_request_map_helper, cr, 0);
2645 if (error != 0)
2646 return (error);
2647 } else {
2648 /*
2649 * Post the command to the adapter.
2650 */
2651 cr->cr_sg_tag = CISS_SG_NONE;
2652 cr->cr_flags |= CISS_REQ_BUSY;
2653 if (sc->ciss_perf)
2654 CISS_TL_PERF_POST_CMD(sc, cr);
2655 else
2656 CISS_TL_SIMPLE_POST_CMD(sc, CISS_FIND_COMMANDPHYS(cr));
2657 }
2658
2659 return(0);
2660}
2661
2662static void
2663ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2664{
2665 struct ciss_command *cc;
2666 struct ciss_request *cr;
2667 struct ciss_softc *sc;
2668 int i;
2669
2670 debug_called(2);
2671
2672 cr = (struct ciss_request *)arg;
2673 sc = cr->cr_sc;
2674 cc = CISS_FIND_COMMAND(cr);
2675
2676 for (i = 0; i < nseg; i++) {
2677 cc->sg[i].address = segs[i].ds_addr;
2678 cc->sg[i].length = segs[i].ds_len;
2679 cc->sg[i].extension = 0;
2680 }
2681 /* we leave the s/g table entirely within the command */
2682 cc->header.sg_in_list = nseg;
2683 cc->header.sg_total = nseg;
2684
2685 if (cr->cr_flags & CISS_REQ_DATAIN)
2686 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD);
2687 if (cr->cr_flags & CISS_REQ_DATAOUT)
2688 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE);
2689
2690 if (nseg == 1)
2691 cr->cr_sg_tag = CISS_SG_NONE;
2692 else if (nseg == 1)
2693 cr->cr_sg_tag = CISS_SG_1;
2694 else if (nseg == 2)
2695 cr->cr_sg_tag = CISS_SG_2;
2696 else if (nseg <= 4)
2697 cr->cr_sg_tag = CISS_SG_4;
2698 else if (nseg <= 8)
2699 cr->cr_sg_tag = CISS_SG_8;
2700 else if (nseg <= 16)
2701 cr->cr_sg_tag = CISS_SG_16;
2702 else if (nseg <= 32)
2703 cr->cr_sg_tag = CISS_SG_32;
2704 else
2705 cr->cr_sg_tag = CISS_SG_MAX;
2706
2707 /*
2708 * Post the command to the adapter.
2709 */
2710 cr->cr_flags |= CISS_REQ_BUSY;
2711 if (sc->ciss_perf)
2712 CISS_TL_PERF_POST_CMD(sc, cr);
2713 else
2714 CISS_TL_SIMPLE_POST_CMD(sc, CISS_FIND_COMMANDPHYS(cr));
2715}
2716
2717/************************************************************************
2718 * Unmap a request from bus-visible space.
2719 */
2720static void
2721ciss_unmap_request(struct ciss_request *cr)
2722{
2723 struct ciss_softc *sc;
2724
2725 debug_called(2);
2726
2727 sc = cr->cr_sc;
2728
2729 /* check that unmapping is necessary */
2730 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0)
2731 return;
2732
2733 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2734 BUS_DMASYNC_POSTWRITE);
2735
2736 if (cr->cr_data == NULL)
2737 goto out;
2738
2739 if (cr->cr_flags & CISS_REQ_DATAIN)
2740 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD);
2741 if (cr->cr_flags & CISS_REQ_DATAOUT)
2742 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE);
2743
2744 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap);
2745out:
2746 cr->cr_flags &= ~CISS_REQ_MAPPED;
2747}
2748
2749/************************************************************************
2750 * Attach the driver to CAM.
2751 *
2752 * We put all the logical drives on a single SCSI bus.
2753 */
2754static int
2755ciss_cam_init(struct ciss_softc *sc)
2756{
2757 int i, maxbus;
2758
2759 debug_called(1);
2760
2761 /*
2762 * Allocate a devq. We can reuse this for the masked physical
2763 * devices if we decide to export these as well.
2764 */
2765 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests)) == NULL) {
2766 ciss_printf(sc, "can't allocate CAM SIM queue\n");
2767 return(ENOMEM);
2768 }
2769
2770 /*
2771 * Create a SIM.
2772 *
2773 * This naturally wastes a bit of memory. The alternative is to allocate
2774 * and register each bus as it is found, and then track them on a linked
2775 * list. Unfortunately, the driver has a few places where it needs to
2776 * look up the SIM based solely on bus number, and it's unclear whether
2777 * a list traversal would work for these situations.
2778 */
2779 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus +
2780 CISS_PHYSICAL_BASE);
2781 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*),
2782 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
2783 if (sc->ciss_cam_sim == NULL) {
2784 ciss_printf(sc, "can't allocate memory for controller SIM\n");
2785 return(ENOMEM);
2786 }
2787
2788 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2789 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2790 "ciss", sc,
2791 device_get_unit(sc->ciss_dev),
2792 &sc->ciss_mtx,
2793 2,
2794 sc->ciss_max_requests - 2,
2795 sc->ciss_cam_devq)) == NULL) {
2796 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2797 return(ENOMEM);
2798 }
2799
2800 /*
2801 * Register bus with this SIM.
2802 */
2803 mtx_lock(&sc->ciss_mtx);
2804 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) {
2805 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2806 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2807 mtx_unlock(&sc->ciss_mtx);
2808 return (ENXIO);
2809 }
2810 }
2811 mtx_unlock(&sc->ciss_mtx);
2812 }
2813
2814 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2815 CISS_PHYSICAL_BASE; i++) {
2816 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2817 "ciss", sc,
2818 device_get_unit(sc->ciss_dev),
2819 &sc->ciss_mtx, 1,
2820 sc->ciss_max_requests - 2,
2821 sc->ciss_cam_devq)) == NULL) {
2822 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2823 return (ENOMEM);
2824 }
2825
2826 mtx_lock(&sc->ciss_mtx);
2827 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2828 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2829 mtx_unlock(&sc->ciss_mtx);
2830 return (ENXIO);
2831 }
2832 mtx_unlock(&sc->ciss_mtx);
2833 }
2834
2835 /*
2836 * Initiate a rescan of the bus.
2837 */
2838 mtx_lock(&sc->ciss_mtx);
2839 ciss_cam_rescan_all(sc);
2840 mtx_unlock(&sc->ciss_mtx);
2841
2842 return(0);
2843}
2844
2845/************************************************************************
2846 * Initiate a rescan of the 'logical devices' SIM
2847 */
2848static void
2849ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target)
2850{
2851 struct cam_path *path;
2852 union ccb *ccb;
2853
2854 debug_called(1);
2855
2856 if ((ccb = malloc(sizeof(union ccb), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
2857 ciss_printf(sc, "rescan failed (can't allocate CCB)\n");
2858 return;
2859 }
2860
2861 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sc->ciss_cam_sim[bus]),
2862 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
2863 ciss_printf(sc, "rescan failed (can't create path)\n");
2864 free(ccb, CISS_MALLOC_CLASS);
2865 return;
2866 }
2867
2868 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/);
2869 ccb->ccb_h.func_code = XPT_SCAN_BUS;
2870 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback;
2871 ccb->crcn.flags = CAM_FLAG_NONE;
2872 xpt_action(ccb);
2873
2874 /* scan is now in progress */
2875}
2876
2877static void
2878ciss_cam_rescan_all(struct ciss_softc *sc)
2879{
2880 int i;
2881
2882 /* Rescan the logical buses */
2883 for (i = 0; i < sc->ciss_max_logical_bus; i++)
2884 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
2885 /* Rescan the physical buses */
2886 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2887 CISS_PHYSICAL_BASE; i++)
2888 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
2889}
2890
2891static void
2892ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
2893{
2894 xpt_free_path(ccb->ccb_h.path);
2895 free(ccb, CISS_MALLOC_CLASS);
2896}
2897
2898/************************************************************************
2899 * Handle requests coming from CAM
2900 */
2901static void
2902ciss_cam_action(struct cam_sim *sim, union ccb *ccb)
2903{
2904 struct ciss_softc *sc;
2905 struct ccb_scsiio *csio;
2906 int bus, target;
2907 int physical;
2908
2909 sc = cam_sim_softc(sim);
2910 bus = cam_sim_bus(sim);
2911 csio = (struct ccb_scsiio *)&ccb->csio;
2912 target = csio->ccb_h.target_id;
2913 physical = CISS_IS_PHYSICAL(bus);
2914
2915 switch (ccb->ccb_h.func_code) {
2916
2917 /* perform SCSI I/O */
2918 case XPT_SCSI_IO:
2919 if (!ciss_cam_action_io(sim, csio))
2920 return;
2921 break;
2922
2923 /* perform geometry calculations */
2924 case XPT_CALC_GEOMETRY:
2925 {
2926 struct ccb_calc_geometry *ccg = &ccb->ccg;
2927 struct ciss_ldrive *ld;
2928
2929 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2930
2931 ld = NULL;
2932 if (!physical)
2933 ld = &sc->ciss_logical[bus][target];
2934
2935 /*
2936 * Use the cached geometry settings unless the fault tolerance
2937 * is invalid.
2938 */
2939 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) {
2940 u_int32_t secs_per_cylinder;
2941
2942 ccg->heads = 255;
2943 ccg->secs_per_track = 32;
2944 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2945 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2946 } else {
2947 ccg->heads = ld->cl_geometry.heads;
2948 ccg->secs_per_track = ld->cl_geometry.sectors;
2949 ccg->cylinders = ntohs(ld->cl_geometry.cylinders);
2950 }
2951 ccb->ccb_h.status = CAM_REQ_CMP;
2952 break;
2953 }
2954
2955 /* handle path attribute inquiry */
2956 case XPT_PATH_INQ:
2957 {
2958 struct ccb_pathinq *cpi = &ccb->cpi;
2959
2960 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2961
2962 cpi->version_num = 1;
2963 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */
2964 cpi->target_sprt = 0;
2965 cpi->hba_misc = 0;
2966 cpi->max_target = CISS_MAX_LOGICAL;
2967 cpi->max_lun = 0; /* 'logical drive' channel only */
2968 cpi->initiator_id = CISS_MAX_LOGICAL;
2969 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2970 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN);
2971 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2972 cpi->unit_number = cam_sim_unit(sim);
2973 cpi->bus_id = cam_sim_bus(sim);
2974 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
2975 cpi->transport = XPORT_SPI;
2976 cpi->transport_version = 2;
2977 cpi->protocol = PROTO_SCSI;
2978 cpi->protocol_version = SCSI_REV_2;
2979 ccb->ccb_h.status = CAM_REQ_CMP;
2980 break;
2981 }
2982
2983 case XPT_GET_TRAN_SETTINGS:
2984 {
2985 struct ccb_trans_settings *cts = &ccb->cts;
2986 int bus, target;
2987 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
2988 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
2989
2990 bus = cam_sim_bus(sim);
2991 target = cts->ccb_h.target_id;
2992
2993 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
2994 /* disconnect always OK */
2995 cts->protocol = PROTO_SCSI;
2996 cts->protocol_version = SCSI_REV_2;
2997 cts->transport = XPORT_SPI;
2998 cts->transport_version = 2;
2999
3000 spi->valid = CTS_SPI_VALID_DISC;
3001 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
3002
3003 scsi->valid = CTS_SCSI_VALID_TQ;
3004 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
3005
3006 cts->ccb_h.status = CAM_REQ_CMP;
3007 break;
3008 }
3009
3010 default: /* we can't do this */
3011 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
3012 ccb->ccb_h.status = CAM_REQ_INVALID;
3013 break;
3014 }
3015
3016 xpt_done(ccb);
3017}
3018
3019/************************************************************************
3020 * Handle a CAM SCSI I/O request.
3021 */
3022static int
3023ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
3024{
3025 struct ciss_softc *sc;
3026 int bus, target;
3027 struct ciss_request *cr;
3028 struct ciss_command *cc;
3029 int error;
3030
3031 sc = cam_sim_softc(sim);
3032 bus = cam_sim_bus(sim);
3033 target = csio->ccb_h.target_id;
3034
3035 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
3036
3037 /* check that the CDB pointer is not to a physical address */
3038 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
3039 debug(3, " CDB pointer is to physical address");
3040 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3041 }
3042
3043 /* if there is data transfer, it must be to/from a virtual address */
3044 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
3045 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */
3046 debug(3, " data pointer is to physical address");
3047 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3048 }
3049 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */
3050 debug(3, " data has premature s/g setup");
3051 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3052 }
3053 }
3054
3055 /* abandon aborted ccbs or those that have failed validation */
3056 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
3057 debug(3, "abandoning CCB due to abort/validation failure");
3058 return(EINVAL);
3059 }
3060
3061 /* handle emulation of some SCSI commands ourself */
3062 if (ciss_cam_emulate(sc, csio))
3063 return(0);
3064
3065 /*
3066 * Get a request to manage this command. If we can't, return the
3067 * ccb, freeze the queue and flag so that we unfreeze it when a
3068 * request completes.
3069 */
3070 if ((error = ciss_get_request(sc, &cr)) != 0) {
3071 xpt_freeze_simq(sim, 1);
3072 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3073 return(error);
3074 }
3075
3076 /*
3077 * Build the command.
3078 */
3079 cc = CISS_FIND_COMMAND(cr);
3080 cr->cr_data = csio->data_ptr;
3081 cr->cr_length = csio->dxfer_len;
3082 cr->cr_complete = ciss_cam_complete;
3083 cr->cr_private = csio;
3084
3085 /*
3086 * Target the right logical volume.
3087 */
3088 if (CISS_IS_PHYSICAL(bus))
3089 cc->header.address =
3090 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address;
3091 else
3092 cc->header.address =
3093 sc->ciss_logical[bus][target].cl_address;
3094 cc->cdb.cdb_length = csio->cdb_len;
3095 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3096 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */
3097 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
3098 cr->cr_flags = CISS_REQ_DATAOUT;
3099 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3100 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
3101 cr->cr_flags = CISS_REQ_DATAIN;
3102 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3103 } else {
3104 cr->cr_flags = 0;
3105 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
3106 }
3107 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1;
3108 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
3109 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len);
3110 } else {
3111 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len);
3112 }
3113
3114 /*
3115 * Submit the request to the adapter.
3116 *
3117 * Note that this may fail if we're unable to map the request (and
3118 * if we ever learn a transport layer other than simple, may fail
3119 * if the adapter rejects the command).
3120 */
3121 if ((error = ciss_start(cr)) != 0) {
3122 xpt_freeze_simq(sim, 1);
3123 if (error == EINPROGRESS) {
3124 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3125 error = 0;
3126 } else {
3127 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3128 ciss_release_request(cr);
3129 }
3130 return(error);
3131 }
3132
3133 return(0);
3134}
3135
3136/************************************************************************
3137 * Emulate SCSI commands the adapter doesn't handle as we might like.
3138 */
3139static int
3140ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio)
3141{
3142 int bus, target;
3143 u_int8_t opcode;
3144
3145 target = csio->ccb_h.target_id;
3146 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3147 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3148 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0];
3149
3150 if (CISS_IS_PHYSICAL(bus)) {
3151 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) {
3152 csio->ccb_h.status = CAM_SEL_TIMEOUT;
3153 xpt_done((union ccb *)csio);
3154 return(1);
3155 } else
3156 return(0);
3157 }
3158
3159 /*
3160 * Handle requests for volumes that don't exist or are not online.
3161 * A selection timeout is slightly better than an illegal request.
3162 * Other errors might be better.
3163 */
3164 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) {
3165 csio->ccb_h.status = CAM_SEL_TIMEOUT;
3166 xpt_done((union ccb *)csio);
3167 return(1);
3168 }
3169
3170 /* if we have to fake Synchronise Cache */
3171 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) {
3172 /*
3173 * If this is a Synchronise Cache command, typically issued when
3174 * a device is closed, flush the adapter and complete now.
3175 */
3176 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3177 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) {
3178 ciss_flush_adapter(sc);
3179 csio->ccb_h.status = CAM_REQ_CMP;
3180 xpt_done((union ccb *)csio);
3181 return(1);
3182 }
3183 }
3184
3185 return(0);
3186}
3187
3188/************************************************************************
3189 * Check for possibly-completed commands.
3190 */
3191static void
3192ciss_cam_poll(struct cam_sim *sim)
3193{
3194 cr_qhead_t qh;
3195 struct ciss_softc *sc = cam_sim_softc(sim);
3196
3197 debug_called(2);
3198
3199 STAILQ_INIT(&qh);
3200 if (sc->ciss_perf)
3201 ciss_perf_done(sc, &qh);
3202 else
3203 ciss_done(sc, &qh);
3204 ciss_complete(sc, &qh);
3205}
3206
3207/************************************************************************
3208 * Handle completion of a command - pass results back through the CCB
3209 */
3210static void
3211ciss_cam_complete(struct ciss_request *cr)
3212{
3213 struct ciss_softc *sc;
3214 struct ciss_command *cc;
3215 struct ciss_error_info *ce;
3216 struct ccb_scsiio *csio;
3217 int scsi_status;
3218 int command_status;
3219
3220 debug_called(2);
3221
3222 sc = cr->cr_sc;
3223 cc = CISS_FIND_COMMAND(cr);
3224 ce = (struct ciss_error_info *)&(cc->sg[0]);
3225 csio = (struct ccb_scsiio *)cr->cr_private;
3226
3227 /*
3228 * Extract status values from request.
3229 */
3230 ciss_report_request(cr, &command_status, &scsi_status);
3231 csio->scsi_status = scsi_status;
3232
3233 /*
3234 * Handle specific SCSI status values.
3235 */
3236 switch(scsi_status) {
3237 /* no status due to adapter error */
3238 case -1:
3239 debug(0, "adapter error");
3240 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3241 break;
3242
3243 /* no status due to command completed OK */
3244 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */
3245 debug(2, "SCSI_STATUS_OK");
3246 csio->ccb_h.status = CAM_REQ_CMP;
3247 break;
3248
3249 /* check condition, sense data included */
3250 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */
3251 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n",
3252 ce->sense_length, ce->residual_count);
3253 bzero(&csio->sense_data, SSD_FULL_SIZE);
3254 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length);
3255 csio->sense_len = ce->sense_length;
3256 csio->resid = ce->residual_count;
3257 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
3258#ifdef CISS_DEBUG
3259 {
3260 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0];
3261 debug(0, "sense key %x", sns->flags & SSD_KEY);
3262 }
3263#endif
3264 break;
3265
3266 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */
3267 debug(0, "SCSI_STATUS_BUSY");
3268 csio->ccb_h.status = CAM_SCSI_BUSY;
3269 break;
3270
3271 default:
3272 debug(0, "unknown status 0x%x", csio->scsi_status);
3273 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3274 break;
3275 }
3276
3277 /* handle post-command fixup */
3278 ciss_cam_complete_fixup(sc, csio);
3279
3280 /* tell CAM we're ready for more commands */
3281 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3282
3283 ciss_release_request(cr);
3284 xpt_done((union ccb *)csio);
3285}
3286
3287/********************************************************************************
3288 * Fix up the result of some commands here.
3289 */
3290static void
3291ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio)
3292{
3293 struct scsi_inquiry_data *inq;
3294 struct ciss_ldrive *cl;
3295 int bus, target;
3296
3297 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3298 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) {
3299
3300 inq = (struct scsi_inquiry_data *)csio->data_ptr;
3301 target = csio->ccb_h.target_id;
3302 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3303
3304 /*
3305 * Don't let hard drives be seen by the DA driver. They will still be
3306 * attached by the PASS driver.
3307 */
3308 if (CISS_IS_PHYSICAL(bus)) {
3309 if (SID_TYPE(inq) == T_DIRECT)
3310 inq->device = (inq->device & 0xe0) | T_NODEVICE;
3311 return;
3312 }
3313
3314 cl = &sc->ciss_logical[bus][target];
3315
3316 padstr(inq->vendor, "COMPAQ", 8);
3317 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8);
3318 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16);
3319 }
3320}
3321
3322
3323/********************************************************************************
3324 * Find a peripheral attached at (target)
3325 */
3326static struct cam_periph *
3327ciss_find_periph(struct ciss_softc *sc, int bus, int target)
3328{
3329 struct cam_periph *periph;
3330 struct cam_path *path;
3331 int status;
3332
3333 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]),
3334 target, 0);
3335 if (status == CAM_REQ_CMP) {
3336 periph = cam_periph_find(path, NULL);
3337 xpt_free_path(path);
3338 } else {
3339 periph = NULL;
3340 }
3341 return(periph);
3342}
3343
3344/********************************************************************************
3345 * Name the device at (target)
3346 *
3347 * XXX is this strictly correct?
3348 */
3349static int
3350ciss_name_device(struct ciss_softc *sc, int bus, int target)
3351{
3352 struct cam_periph *periph;
3353
3354 if (CISS_IS_PHYSICAL(bus))
3355 return (0);
3356 if ((periph = ciss_find_periph(sc, bus, target)) != NULL) {
3357 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d",
3358 periph->periph_name, periph->unit_number);
3359 return(0);
3360 }
3361 sc->ciss_logical[bus][target].cl_name[0] = 0;
3362 return(ENOENT);
3363}
3364
3365/************************************************************************
3366 * Periodic status monitoring.
3367 */
3368static void
3369ciss_periodic(void *arg)
3370{
3371 struct ciss_softc *sc;
3372 struct ciss_request *cr = NULL;
3373 struct ciss_command *cc = NULL;
3374 int error = 0;
3375
3376 debug_called(1);
3377
3378 sc = (struct ciss_softc *)arg;
3379
3380 /*
3381 * Check the adapter heartbeat.
3382 */
3383 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) {
3384 sc->ciss_heart_attack++;
3385 debug(0, "adapter heart attack in progress 0x%x/%d",
3386 sc->ciss_heartbeat, sc->ciss_heart_attack);
3387 if (sc->ciss_heart_attack == 3) {
3388 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n");
3389 ciss_disable_adapter(sc);
3390 return;
3391 }
3392 } else {
3393 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat;
3394 sc->ciss_heart_attack = 0;
3395 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat);
3396 }
3397
3398 /*
3399 * Send the NOP message and wait for a response.
3400 */
3401 if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) {
3402 cc = CISS_FIND_COMMAND(cr);
3403 cr->cr_complete = ciss_nop_complete;
3404 cc->cdb.cdb_length = 1;
3405 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
3406 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3407 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3408 cc->cdb.timeout = 0;
3409 cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP;
3410
3411 if ((error = ciss_start(cr)) != 0) {
3412 ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n");
3413 }
3414 }
3415
3416 /*
3417 * If the notify event request has died for some reason, or has
3418 * not started yet, restart it.
3419 */
3420 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) {
3421 debug(0, "(re)starting Event Notify chain");
3422 ciss_notify_event(sc);
3423 }
3424
3425 /*
3426 * Reschedule.
3427 */
3428 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc);
3429}
3430
3431static void
3432ciss_nop_complete(struct ciss_request *cr)
3433{
3434 struct ciss_softc *sc;
3435 static int first_time = 1;
3436
3437 sc = cr->cr_sc;
3438 if (ciss_report_request(cr, NULL, NULL) != 0) {
3439 if (first_time == 1) {
3440 first_time = 0;
3441 ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n");
3442 }
3443 }
3444
3445 ciss_release_request(cr);
3446}
3447
3448/************************************************************************
3449 * Disable the adapter.
3450 *
3451 * The all requests in completed queue is failed with hardware error.
3452 * This will cause failover in a multipath configuration.
3453 */
3454static void
3455ciss_disable_adapter(struct ciss_softc *sc)
3456{
3457 cr_qhead_t qh;
3458 struct ciss_request *cr;
3459 struct ciss_command *cc;
3460 struct ciss_error_info *ce;
3461 int i;
3462
3463 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
3464 pci_disable_busmaster(sc->ciss_dev);
3465 sc->ciss_flags &= ~CISS_FLAG_RUNNING;
3466
3467 for (i = 1; i < sc->ciss_max_requests; i++) {
3468 cr = &sc->ciss_request[i];
3469 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
3470 continue;
3471
3472 cc = CISS_FIND_COMMAND(cr);
3473 ce = (struct ciss_error_info *)&(cc->sg[0]);
3474 ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR;
3475 ciss_enqueue_complete(cr, &qh);
3476 }
3477
3478 for (;;) {
3479 if ((cr = ciss_dequeue_complete(sc, &qh)) == NULL)
3480 break;
3481
3482 /*
3483 * If the request has a callback, invoke it.
3484 */
3485 if (cr->cr_complete != NULL) {
3486 cr->cr_complete(cr);
3487 continue;
3488 }
3489
3490 /*
3491 * If someone is sleeping on this request, wake them up.
3492 */
3493 if (cr->cr_flags & CISS_REQ_SLEEP) {
3494 cr->cr_flags &= ~CISS_REQ_SLEEP;
3495 wakeup(cr);
3496 continue;
3497 }
3498 }
3499}
3500
3501/************************************************************************
3502 * Request a notification response from the adapter.
3503 *
3504 * If (cr) is NULL, this is the first request of the adapter, so
3505 * reset the adapter's message pointer and start with the oldest
3506 * message available.
3507 */
3508static void
3509ciss_notify_event(struct ciss_softc *sc)
3510{
3511 struct ciss_request *cr;
3512 struct ciss_command *cc;
3513 struct ciss_notify_cdb *cnc;
3514 int error;
3515
3516 debug_called(1);
3517
3518 cr = sc->ciss_periodic_notify;
3519
3520 /* get a request if we don't already have one */
3521 if (cr == NULL) {
3522 if ((error = ciss_get_request(sc, &cr)) != 0) {
3523 debug(0, "can't get notify event request");
3524 goto out;
3525 }
3526 sc->ciss_periodic_notify = cr;
3527 cr->cr_complete = ciss_notify_complete;
3528 debug(1, "acquired request %d", cr->cr_tag);
3529 }
3530
3531 /*
3532 * Get a databuffer if we don't already have one, note that the
3533 * adapter command wants a larger buffer than the actual
3534 * structure.
3535 */
3536 if (cr->cr_data == NULL) {
3537 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3538 debug(0, "can't get notify event request buffer");
3539 error = ENOMEM;
3540 goto out;
3541 }
3542 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3543 }
3544
3545 /* re-setup the request's command (since we never release it) XXX overkill*/
3546 ciss_preen_command(cr);
3547
3548 /* (re)build the notify event command */
3549 cc = CISS_FIND_COMMAND(cr);
3550 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3551 cc->header.address.physical.bus = 0;
3552 cc->header.address.physical.target = 0;
3553
3554 cc->cdb.cdb_length = sizeof(*cnc);
3555 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3556 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3557 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3558 cc->cdb.timeout = 0; /* no timeout, we hope */
3559
3560 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3561 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE);
3562 cnc->opcode = CISS_OPCODE_READ;
3563 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT;
3564 cnc->timeout = 0; /* no timeout, we hope */
3565 cnc->synchronous = 0;
3566 cnc->ordered = 0;
3567 cnc->seek_to_oldest = 0;
3568 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0)
3569 cnc->new_only = 1;
3570 else
3571 cnc->new_only = 0;
3572 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3573
3574 /* submit the request */
3575 error = ciss_start(cr);
3576
3577 out:
3578 if (error) {
3579 if (cr != NULL) {
3580 if (cr->cr_data != NULL)
3581 free(cr->cr_data, CISS_MALLOC_CLASS);
3582 ciss_release_request(cr);
3583 }
3584 sc->ciss_periodic_notify = NULL;
3585 debug(0, "can't submit notify event request");
3586 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3587 } else {
3588 debug(1, "notify event submitted");
3589 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK;
3590 }
3591}
3592
3593static void
3594ciss_notify_complete(struct ciss_request *cr)
3595{
3596 struct ciss_command *cc;
3597 struct ciss_notify *cn;
3598 struct ciss_softc *sc;
3599 int scsi_status;
3600 int command_status;
3601 debug_called(1);
3602
3603 cc = CISS_FIND_COMMAND(cr);
3604 cn = (struct ciss_notify *)cr->cr_data;
3605 sc = cr->cr_sc;
3606
3607 /*
3608 * Report request results, decode status.
3609 */
3610 ciss_report_request(cr, &command_status, &scsi_status);
3611
3612 /*
3613 * Abort the chain on a fatal error.
3614 *
3615 * XXX which of these are actually errors?
3616 */
3617 if ((command_status != CISS_CMD_STATUS_SUCCESS) &&
3618 (command_status != CISS_CMD_STATUS_TARGET_STATUS) &&
3619 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */
3620 ciss_printf(sc, "fatal error in Notify Event request (%s)\n",
3621 ciss_name_command_status(command_status));
3622 ciss_release_request(cr);
3623 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3624 return;
3625 }
3626
3627 /*
3628 * If the adapter gave us a text message, print it.
3629 */
3630 if (cn->message[0] != 0)
3631 ciss_printf(sc, "*** %.80s\n", cn->message);
3632
3633 debug(0, "notify event class %d subclass %d detail %d",
3634 cn->class, cn->subclass, cn->detail);
3635
3636 /*
3637 * If the response indicates that the notifier has been aborted,
3638 * release the notifier command.
3639 */
3640 if ((cn->class == CISS_NOTIFY_NOTIFIER) &&
3641 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) &&
3642 (cn->detail == 1)) {
3643 debug(0, "notifier exiting");
3644 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3645 ciss_release_request(cr);
3646 sc->ciss_periodic_notify = NULL;
3647 wakeup(&sc->ciss_periodic_notify);
3648 } else {
3649 /* Handle notify events in a kernel thread */
3650 ciss_enqueue_notify(cr);
3651 sc->ciss_periodic_notify = NULL;
3652 wakeup(&sc->ciss_periodic_notify);
3653 wakeup(&sc->ciss_notify);
3654 }
3655 /*
3656 * Send a new notify event command, if we're not aborting.
3657 */
3658 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) {
3659 ciss_notify_event(sc);
3660 }
3661}
3662
3663/************************************************************************
3664 * Abort the Notify Event chain.
3665 *
3666 * Note that we can't just abort the command in progress; we have to
3667 * explicitly issue an Abort Notify Event command in order for the
3668 * adapter to clean up correctly.
3669 *
3670 * If we are called with CISS_FLAG_ABORTING set in the adapter softc,
3671 * the chain will not restart itself.
3672 */
3673static int
3674ciss_notify_abort(struct ciss_softc *sc)
3675{
3676 struct ciss_request *cr;
3677 struct ciss_command *cc;
3678 struct ciss_notify_cdb *cnc;
3679 int error, command_status, scsi_status;
3680
3681 debug_called(1);
3682
3683 cr = NULL;
3684 error = 0;
3685
3686 /* verify that there's an outstanding command */
3687 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3688 goto out;
3689
3690 /* get a command to issue the abort with */
3691 if ((error = ciss_get_request(sc, &cr)))
3692 goto out;
3693
3694 /* get a buffer for the result */
3695 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3696 debug(0, "can't get notify event request buffer");
3697 error = ENOMEM;
3698 goto out;
3699 }
3700 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3701
3702 /* build the CDB */
3703 cc = CISS_FIND_COMMAND(cr);
3704 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3705 cc->header.address.physical.bus = 0;
3706 cc->header.address.physical.target = 0;
3707 cc->cdb.cdb_length = sizeof(*cnc);
3708 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3709 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3710 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3711 cc->cdb.timeout = 0; /* no timeout, we hope */
3712
3713 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3714 bzero(cnc, sizeof(*cnc));
3715 cnc->opcode = CISS_OPCODE_WRITE;
3716 cnc->command = CISS_COMMAND_ABORT_NOTIFY;
3717 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3718
3719 ciss_print_request(cr);
3720
3721 /*
3722 * Submit the request and wait for it to complete.
3723 */
3724 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3725 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error);
3726 goto out;
3727 }
3728
3729 /*
3730 * Check response.
3731 */
3732 ciss_report_request(cr, &command_status, &scsi_status);
3733 switch(command_status) {
3734 case CISS_CMD_STATUS_SUCCESS:
3735 break;
3736 case CISS_CMD_STATUS_INVALID_COMMAND:
3737 /*
3738 * Some older adapters don't support the CISS version of this
3739 * command. Fall back to using the BMIC version.
3740 */
3741 error = ciss_notify_abort_bmic(sc);
3742 if (error != 0)
3743 goto out;
3744 break;
3745
3746 case CISS_CMD_STATUS_TARGET_STATUS:
3747 /*
3748 * This can happen if the adapter thinks there wasn't an outstanding
3749 * Notify Event command but we did. We clean up here.
3750 */
3751 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) {
3752 if (sc->ciss_periodic_notify != NULL)
3753 ciss_release_request(sc->ciss_periodic_notify);
3754 error = 0;
3755 goto out;
3756 }
3757 /* FALLTHROUGH */
3758
3759 default:
3760 ciss_printf(sc, "Abort Notify Event command failed (%s)\n",
3761 ciss_name_command_status(command_status));
3762 error = EIO;
3763 goto out;
3764 }
3765
3766 /*
3767 * Sleep waiting for the notifier command to complete. Note
3768 * that if it doesn't, we may end up in a bad situation, since
3769 * the adapter may deliver it later. Also note that the adapter
3770 * requires the Notify Event command to be cancelled in order to
3771 * maintain internal bookkeeping.
3772 */
3773 while (sc->ciss_periodic_notify != NULL) {
3774 error = msleep(&sc->ciss_periodic_notify, &sc->ciss_mtx, PRIBIO, "cissNEA", hz * 5);
3775 if (error == EWOULDBLOCK) {
3776 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n");
3777 break;
3778 }
3779 }
3780
3781 out:
3782 /* release the cancel request */
3783 if (cr != NULL) {
3784 if (cr->cr_data != NULL)
3785 free(cr->cr_data, CISS_MALLOC_CLASS);
3786 ciss_release_request(cr);
3787 }
3788 if (error == 0)
3789 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3790 return(error);
3791}
3792
3793/************************************************************************
3794 * Abort the Notify Event chain using a BMIC command.
3795 */
3796static int
3797ciss_notify_abort_bmic(struct ciss_softc *sc)
3798{
3799 struct ciss_request *cr;
3800 int error, command_status;
3801
3802 debug_called(1);
3803
3804 cr = NULL;
3805 error = 0;
3806
3807 /* verify that there's an outstanding command */
3808 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3809 goto out;
3810
3811 /*
3812 * Build a BMIC command to cancel the Notify on Event command.
3813 *
3814 * Note that we are sending a CISS opcode here. Odd.
3815 */
3816 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY,
3817 NULL, 0)) != 0)
3818 goto out;
3819
3820 /*
3821 * Submit the request and wait for it to complete.
3822 */
3823 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3824 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error);
3825 goto out;
3826 }
3827
3828 /*
3829 * Check response.
3830 */
3831 ciss_report_request(cr, &command_status, NULL);
3832 switch(command_status) {
3833 case CISS_CMD_STATUS_SUCCESS:
3834 break;
3835 default:
3836 ciss_printf(sc, "error cancelling Notify on Event (%s)\n",
3837 ciss_name_command_status(command_status));
3838 error = EIO;
3839 goto out;
3840 }
3841
3842out:
3843 if (cr != NULL)
3844 ciss_release_request(cr);
3845 return(error);
3846}
3847
3848/************************************************************************
3849 * Handle rescanning all the logical volumes when a notify event
3850 * causes the drives to come online or offline.
3851 */
3852static void
3853ciss_notify_rescan_logical(struct ciss_softc *sc)
3854{
3855 struct ciss_lun_report *cll;
3856 struct ciss_ldrive *ld;
3857 int i, j, ndrives;
3858
3859 /*
3860 * We must rescan all logical volumes to get the right logical
3861 * drive address.
3862 */
3863 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
3864 CISS_MAX_LOGICAL);
3865 if (cll == NULL)
3866 return;
3867
3868 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
3869
3870 /*
3871 * Delete any of the drives which were destroyed by the
3872 * firmware.
3873 */
3874 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
3875 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
3876 ld = &sc->ciss_logical[i][j];
3877
3878 if (ld->cl_update == 0)
3879 continue;
3880
3881 if (ld->cl_status != CISS_LD_ONLINE) {
3882 ciss_cam_rescan_target(sc, i, j);
3883 ld->cl_update = 0;
3884 if (ld->cl_ldrive)
3885 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
3886 if (ld->cl_lstatus)
3887 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
3888
3889 ld->cl_ldrive = NULL;
3890 ld->cl_lstatus = NULL;
3891 }
3892 }
3893 }
3894
3895 /*
3896 * Scan for new drives.
3897 */
3898 for (i = 0; i < ndrives; i++) {
3899 int bus, target;
3900
3901 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
3902 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
3903 ld = &sc->ciss_logical[bus][target];
3904
3905 if (ld->cl_update == 0)
3906 continue;
3907
3908 ld->cl_update = 0;
3909 ld->cl_address = cll->lun[i];
3910 ld->cl_controller = &sc->ciss_controllers[bus];
3911 if (ciss_identify_logical(sc, ld) == 0) {
3912 ciss_cam_rescan_target(sc, bus, target);
3913 }
3914 }
3915 free(cll, CISS_MALLOC_CLASS);
3916}
3917
3918/************************************************************************
3919 * Handle a notify event relating to the status of a logical drive.
3920 *
3921 * XXX need to be able to defer some of these to properly handle
3922 * calling the "ID Physical drive" command, unless the 'extended'
3923 * drive IDs are always in BIG_MAP format.
3924 */
3925static void
3926ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn)
3927{
3928 struct ciss_ldrive *ld;
3929 int ostatus, bus, target;
3930
3931 debug_called(2);
3932
3933 bus = cn->device.physical.bus;
3934 target = cn->data.logical_status.logical_drive;
3935 ld = &sc->ciss_logical[bus][target];
3936
3937 switch (cn->subclass) {
3938 case CISS_NOTIFY_LOGICAL_STATUS:
3939 switch (cn->detail) {
3940 case 0:
3941 ciss_name_device(sc, bus, target);
3942 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n",
3943 cn->data.logical_status.logical_drive, ld->cl_name,
3944 ciss_name_ldrive_status(cn->data.logical_status.previous_state),
3945 ciss_name_ldrive_status(cn->data.logical_status.new_state),
3946 cn->data.logical_status.spare_state,
3947 "\20\1configured\2rebuilding\3failed\4in use\5available\n");
3948
3949 /*
3950 * Update our idea of the drive's status.
3951 */
3952 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state);
3953 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3954 if (ld->cl_lstatus != NULL)
3955 ld->cl_lstatus->status = cn->data.logical_status.new_state;
3956
3957 /*
3958 * Have CAM rescan the drive if its status has changed.
3959 */
3960 if (ostatus != ld->cl_status) {
3961 ld->cl_update = 1;
3962 ciss_notify_rescan_logical(sc);
3963 }
3964
3965 break;
3966
3967 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */
3968 ciss_name_device(sc, bus, target);
3969 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n",
3970 cn->data.logical_status.logical_drive, ld->cl_name);
3971 ciss_accept_media(sc, ld);
3972
3973 ld->cl_update = 1;
3974 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3975 ciss_notify_rescan_logical(sc);
3976 break;
3977
3978 case 2:
3979 case 3:
3980 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n",
3981 cn->data.rebuild_aborted.logical_drive,
3982 ld->cl_name,
3983 (cn->detail == 2) ? "read" : "write");
3984 break;
3985 }
3986 break;
3987
3988 case CISS_NOTIFY_LOGICAL_ERROR:
3989 if (cn->detail == 0) {
3990 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n",
3991 cn->data.io_error.logical_drive,
3992 ld->cl_name,
3993 cn->data.io_error.failure_bus,
3994 cn->data.io_error.failure_drive);
3995 /* XXX should we take the drive down at this point, or will we be told? */
3996 }
3997 break;
3998
3999 case CISS_NOTIFY_LOGICAL_SURFACE:
4000 if (cn->detail == 0)
4001 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n",
4002 cn->data.consistency_completed.logical_drive,
4003 ld->cl_name);
4004 break;
4005 }
4006}
4007
4008/************************************************************************
4009 * Handle a notify event relating to the status of a physical drive.
4010 */
4011static void
4012ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn)
4013{
4014}
4015
4016/************************************************************************
4017 * Handle a notify event relating to the status of a physical drive.
4018 */
4019static void
4020ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn)
4021{
4022 struct ciss_lun_report *cll = NULL;
4023 int bus, target;
4024
4025 switch (cn->subclass) {
4026 case CISS_NOTIFY_HOTPLUG_PHYSICAL:
4027 case CISS_NOTIFY_HOTPLUG_NONDISK:
4028 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number);
4029 target =
4030 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number);
4031
4032 if (cn->detail == 0) {
4033 /*
4034 * Mark the device offline so that it'll start producing selection
4035 * timeouts to the upper layer.
4036 */
4037 if ((bus >= 0) && (target >= 0))
4038 sc->ciss_physical[bus][target].cp_online = 0;
4039 } else {
4040 /*
4041 * Rescan the physical lun list for new items
4042 */
4043 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
4044 CISS_MAX_PHYSICAL);
4045 if (cll == NULL) {
4046 ciss_printf(sc, "Warning, cannot get physical lun list\n");
4047 break;
4048 }
4049 ciss_filter_physical(sc, cll);
4050 }
4051 break;
4052
4053 default:
4054 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass);
4055 return;
4056 }
4057
4058 if (cll != NULL)
4059 free(cll, CISS_MALLOC_CLASS);
4060}
4061
4062/************************************************************************
4063 * Handle deferred processing of notify events. Notify events may need
4064 * sleep which is unsafe during an interrupt.
4065 */
4066static void
4067ciss_notify_thread(void *arg)
4068{
4069 struct ciss_softc *sc;
4070 struct ciss_request *cr;
4071 struct ciss_notify *cn;
4072
4073 sc = (struct ciss_softc *)arg;
4074#if __FreeBSD_version >= 500000
4075 mtx_lock(&sc->ciss_mtx);
4076#endif
4077
4078 for (;;) {
4079 if (STAILQ_EMPTY(&sc->ciss_notify) != 0 &&
4080 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) {
4081 msleep(&sc->ciss_notify, &sc->ciss_mtx, PUSER, "idle", 0);
4082 }
4083
4084 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT)
4085 break;
4086
4087 cr = ciss_dequeue_notify(sc);
4088
4089 if (cr == NULL)
4090 panic("cr null");
4091 cn = (struct ciss_notify *)cr->cr_data;
4092
4093 switch (cn->class) {
4094 case CISS_NOTIFY_HOTPLUG:
4095 ciss_notify_hotplug(sc, cn);
4096 break;
4097 case CISS_NOTIFY_LOGICAL:
4098 ciss_notify_logical(sc, cn);
4099 break;
4100 case CISS_NOTIFY_PHYSICAL:
4101 ciss_notify_physical(sc, cn);
4102 break;
4103 }
4104
4105 ciss_release_request(cr);
4106
4107 }
4108 sc->ciss_notify_thread = NULL;
4109 wakeup(&sc->ciss_notify_thread);
4110
4111#if __FreeBSD_version >= 500000
4112 mtx_unlock(&sc->ciss_mtx);
4113#endif
4114 kproc_exit(0);
4115}
4116
4117/************************************************************************
4118 * Start the notification kernel thread.
4119 */
4120static void
4121ciss_spawn_notify_thread(struct ciss_softc *sc)
4122{
4123
4124#if __FreeBSD_version > 500005
4125 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4126 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d",
4127 device_get_unit(sc->ciss_dev)))
4128#else
4129 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4130 &sc->ciss_notify_thread, "ciss_notify%d",
4131 device_get_unit(sc->ciss_dev)))
4132#endif
4133 panic("Could not create notify thread\n");
4134}
4135
4136/************************************************************************
4137 * Kill the notification kernel thread.
4138 */
4139static void
4140ciss_kill_notify_thread(struct ciss_softc *sc)
4141{
4142
4143 if (sc->ciss_notify_thread == NULL)
4144 return;
4145
4146 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT;
4147 wakeup(&sc->ciss_notify);
4148 msleep(&sc->ciss_notify_thread, &sc->ciss_mtx, PUSER, "thtrm", 0);
4149}
4150
4151/************************************************************************
4152 * Print a request.
4153 */
4154static void
4155ciss_print_request(struct ciss_request *cr)
4156{
4157 struct ciss_softc *sc;
4158 struct ciss_command *cc;
4159 int i;
4160
4161 sc = cr->cr_sc;
4162 cc = CISS_FIND_COMMAND(cr);
4163
4164 ciss_printf(sc, "REQUEST @ %p\n", cr);
4165 ciss_printf(sc, " data %p/%d tag %d flags %b\n",
4166 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags,
4167 "\20\1mapped\2sleep\3poll\4dataout\5datain\n");
4168 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n",
4169 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag);
4170 switch(cc->header.address.mode.mode) {
4171 case CISS_HDR_ADDRESS_MODE_PERIPHERAL:
4172 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL:
4173 ciss_printf(sc, " physical bus %d target %d\n",
4174 cc->header.address.physical.bus, cc->header.address.physical.target);
4175 break;
4176 case CISS_HDR_ADDRESS_MODE_LOGICAL:
4177 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun);
4178 break;
4179 }
4180 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n",
4181 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" :
4182 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" :
4183 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??",
4184 cc->cdb.cdb_length,
4185 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" :
4186 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??",
4187 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" :
4188 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" :
4189 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" :
4190 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" :
4191 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??");
4192 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " ");
4193
4194 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) {
4195 /* XXX print error info */
4196 } else {
4197 /* since we don't use chained s/g, don't support it here */
4198 for (i = 0; i < cc->header.sg_in_list; i++) {
4199 if ((i % 4) == 0)
4200 ciss_printf(sc, " ");
4201 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length);
4202 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1)))
4203 printf("\n");
4204 }
4205 }
4206}
4207
4208/************************************************************************
4209 * Print information about the status of a logical drive.
4210 */
4211static void
4212ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld)
4213{
4214 int bus, target, i;
4215
4216 if (ld->cl_lstatus == NULL) {
4217 printf("does not exist\n");
4218 return;
4219 }
4220
4221 /* print drive status */
4222 switch(ld->cl_lstatus->status) {
4223 case CISS_LSTATUS_OK:
4224 printf("online\n");
4225 break;
4226 case CISS_LSTATUS_INTERIM_RECOVERY:
4227 printf("in interim recovery mode\n");
4228 break;
4229 case CISS_LSTATUS_READY_RECOVERY:
4230 printf("ready to begin recovery\n");
4231 break;
4232 case CISS_LSTATUS_RECOVERING:
4233 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4234 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4235 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n",
4236 bus, target, ld->cl_lstatus->blocks_to_recover);
4237 break;
4238 case CISS_LSTATUS_EXPANDING:
4239 printf("being expanded, %u blocks remaining\n",
4240 ld->cl_lstatus->blocks_to_recover);
4241 break;
4242 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4243 printf("queued for expansion\n");
4244 break;
4245 case CISS_LSTATUS_FAILED:
4246 printf("queued for expansion\n");
4247 break;
4248 case CISS_LSTATUS_WRONG_PDRIVE:
4249 printf("wrong physical drive inserted\n");
4250 break;
4251 case CISS_LSTATUS_MISSING_PDRIVE:
4252 printf("missing a needed physical drive\n");
4253 break;
4254 case CISS_LSTATUS_BECOMING_READY:
4255 printf("becoming ready\n");
4256 break;
4257 }
4258
4259 /* print failed physical drives */
4260 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) {
4261 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]);
4262 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]);
4263 if (bus == -1)
4264 continue;
4265 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target,
4266 ld->cl_lstatus->drive_failure_map[i]);
4267 }
4268}
4269
4270#ifdef CISS_DEBUG
4271/************************************************************************
4272 * Print information about the controller/driver.
4273 */
4274static void
4275ciss_print_adapter(struct ciss_softc *sc)
4276{
4277 int i, j;
4278
4279 ciss_printf(sc, "ADAPTER:\n");
4280 for (i = 0; i < CISSQ_COUNT; i++) {
4281 ciss_printf(sc, "%s %d/%d\n",
4282 i == 0 ? "free" :
4283 i == 1 ? "busy" : "complete",
4284 sc->ciss_qstat[i].q_length,
4285 sc->ciss_qstat[i].q_max);
4286 }
4287 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests);
4288 ciss_printf(sc, "flags %b\n", sc->ciss_flags,
4289 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n");
4290
4291 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
4292 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
4293 ciss_printf(sc, "LOGICAL DRIVE %d: ", i);
4294 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]);
4295 }
4296 }
4297
4298 /* XXX Should physical drives be printed out here? */
4299
4300 for (i = 1; i < sc->ciss_max_requests; i++)
4301 ciss_print_request(sc->ciss_request + i);
4302}
4303
4304/* DDB hook */
4305static void
4306ciss_print0(void)
4307{
4308 struct ciss_softc *sc;
4309
4310 sc = devclass_get_softc(devclass_find("ciss"), 0);
4311 if (sc == NULL) {
4312 printf("no ciss controllers\n");
4313 } else {
4314 ciss_print_adapter(sc);
4315 }
4316}
4317#endif
4318
4319/************************************************************************
4320 * Return a name for a logical drive status value.
4321 */
4322static const char *
4323ciss_name_ldrive_status(int status)
4324{
4325 switch (status) {
4326 case CISS_LSTATUS_OK:
4327 return("OK");
4328 case CISS_LSTATUS_FAILED:
4329 return("failed");
4330 case CISS_LSTATUS_NOT_CONFIGURED:
4331 return("not configured");
4332 case CISS_LSTATUS_INTERIM_RECOVERY:
4333 return("interim recovery");
4334 case CISS_LSTATUS_READY_RECOVERY:
4335 return("ready for recovery");
4336 case CISS_LSTATUS_RECOVERING:
4337 return("recovering");
4338 case CISS_LSTATUS_WRONG_PDRIVE:
4339 return("wrong physical drive inserted");
4340 case CISS_LSTATUS_MISSING_PDRIVE:
4341 return("missing physical drive");
4342 case CISS_LSTATUS_EXPANDING:
4343 return("expanding");
4344 case CISS_LSTATUS_BECOMING_READY:
4345 return("becoming ready");
4346 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4347 return("queued for expansion");
4348 }
4349 return("unknown status");
4350}
4351
4352/************************************************************************
4353 * Return an online/offline/nonexistent value for a logical drive
4354 * status value.
4355 */
4356static int
4357ciss_decode_ldrive_status(int status)
4358{
4359 switch(status) {
4360 case CISS_LSTATUS_NOT_CONFIGURED:
4361 return(CISS_LD_NONEXISTENT);
4362
4363 case CISS_LSTATUS_OK:
4364 case CISS_LSTATUS_INTERIM_RECOVERY:
4365 case CISS_LSTATUS_READY_RECOVERY:
4366 case CISS_LSTATUS_RECOVERING:
4367 case CISS_LSTATUS_EXPANDING:
4368 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4369 return(CISS_LD_ONLINE);
4370
4371 case CISS_LSTATUS_FAILED:
4372 case CISS_LSTATUS_WRONG_PDRIVE:
4373 case CISS_LSTATUS_MISSING_PDRIVE:
4374 case CISS_LSTATUS_BECOMING_READY:
4375 default:
4376 return(CISS_LD_OFFLINE);
4377 }
4378}
4379
4380
4381/************************************************************************
4382 * Return a name for a logical drive's organisation.
4383 */
4384static const char *
4385ciss_name_ldrive_org(int org)
4386{
4387 switch(org) {
4388 case CISS_LDRIVE_RAID0:
4389 return("RAID 0");
4390 case CISS_LDRIVE_RAID1:
4391 return("RAID 1");
4392 case CISS_LDRIVE_RAID4:
4393 return("RAID 4");
4394 case CISS_LDRIVE_RAID5:
4395 return("RAID 5");
4396 case CISS_LDRIVE_RAID51:
4397 return("RAID 5+1");
4398 case CISS_LDRIVE_RAIDADG:
4399 return("RAID ADG");
4400 }
4401 return("unkown");
4402}
4403
4404/************************************************************************
4405 * Return a name for a command status value.
4406 */
4407static const char *
4408ciss_name_command_status(int status)
4409{
4410 switch(status) {
4411 case CISS_CMD_STATUS_SUCCESS:
4412 return("success");
4413 case CISS_CMD_STATUS_TARGET_STATUS:
4414 return("target status");
4415 case CISS_CMD_STATUS_DATA_UNDERRUN:
4416 return("data underrun");
4417 case CISS_CMD_STATUS_DATA_OVERRUN:
4418 return("data overrun");
4419 case CISS_CMD_STATUS_INVALID_COMMAND:
4420 return("invalid command");
4421 case CISS_CMD_STATUS_PROTOCOL_ERROR:
4422 return("protocol error");
4423 case CISS_CMD_STATUS_HARDWARE_ERROR:
4424 return("hardware error");
4425 case CISS_CMD_STATUS_CONNECTION_LOST:
4426 return("connection lost");
4427 case CISS_CMD_STATUS_ABORTED:
4428 return("aborted");
4429 case CISS_CMD_STATUS_ABORT_FAILED:
4430 return("abort failed");
4431 case CISS_CMD_STATUS_UNSOLICITED_ABORT:
4432 return("unsolicited abort");
4433 case CISS_CMD_STATUS_TIMEOUT:
4434 return("timeout");
4435 case CISS_CMD_STATUS_UNABORTABLE:
4436 return("unabortable");
4437 }
4438 return("unknown status");
4439}
4440
4441/************************************************************************
4442 * Handle an open on the control device.
4443 */
4444static int
| 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
88#include <cam/cam.h>
89#include <cam/cam_ccb.h>
90#include <cam/cam_periph.h>
91#include <cam/cam_sim.h>
92#include <cam/cam_xpt_sim.h>
93#include <cam/scsi/scsi_all.h>
94#include <cam/scsi/scsi_message.h>
95
96#include <machine/bus.h>
97#include <machine/endian.h>
98#include <machine/resource.h>
99#include <sys/rman.h>
100
101#include <dev/pci/pcireg.h>
102#include <dev/pci/pcivar.h>
103
104#include <dev/ciss/cissreg.h>
105#include <dev/ciss/cissio.h>
106#include <dev/ciss/cissvar.h>
107
108MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", "ciss internal data buffers");
109
110/* pci interface */
111static int ciss_lookup(device_t dev);
112static int ciss_probe(device_t dev);
113static int ciss_attach(device_t dev);
114static int ciss_detach(device_t dev);
115static int ciss_shutdown(device_t dev);
116
117/* (de)initialisation functions, control wrappers */
118static int ciss_init_pci(struct ciss_softc *sc);
119static int ciss_setup_msix(struct ciss_softc *sc);
120static int ciss_init_perf(struct ciss_softc *sc);
121static int ciss_wait_adapter(struct ciss_softc *sc);
122static int ciss_flush_adapter(struct ciss_softc *sc);
123static int ciss_init_requests(struct ciss_softc *sc);
124static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs,
125 int nseg, int error);
126static int ciss_identify_adapter(struct ciss_softc *sc);
127static int ciss_init_logical(struct ciss_softc *sc);
128static int ciss_init_physical(struct ciss_softc *sc);
129static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll);
130static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld);
131static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld);
132static int ciss_update_config(struct ciss_softc *sc);
133static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld);
134static void ciss_init_sysctl(struct ciss_softc *sc);
135static void ciss_soft_reset(struct ciss_softc *sc);
136static void ciss_free(struct ciss_softc *sc);
137static void ciss_spawn_notify_thread(struct ciss_softc *sc);
138static void ciss_kill_notify_thread(struct ciss_softc *sc);
139
140/* request submission/completion */
141static int ciss_start(struct ciss_request *cr);
142static void ciss_done(struct ciss_softc *sc, cr_qhead_t *qh);
143static void ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh);
144static void ciss_intr(void *arg);
145static void ciss_perf_intr(void *arg);
146static void ciss_perf_msi_intr(void *arg);
147static void ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh);
148static int _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func);
149static int ciss_synch_request(struct ciss_request *cr, int timeout);
150static int ciss_poll_request(struct ciss_request *cr, int timeout);
151static int ciss_wait_request(struct ciss_request *cr, int timeout);
152#if 0
153static int ciss_abort_request(struct ciss_request *cr);
154#endif
155
156/* request queueing */
157static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp);
158static void ciss_preen_command(struct ciss_request *cr);
159static void ciss_release_request(struct ciss_request *cr);
160
161/* request helpers */
162static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
163 int opcode, void **bufp, size_t bufsize);
164static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc);
165
166/* DMA map/unmap */
167static int ciss_map_request(struct ciss_request *cr);
168static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs,
169 int nseg, int error);
170static void ciss_unmap_request(struct ciss_request *cr);
171
172/* CAM interface */
173static int ciss_cam_init(struct ciss_softc *sc);
174static void ciss_cam_rescan_target(struct ciss_softc *sc,
175 int bus, int target);
176static void ciss_cam_rescan_all(struct ciss_softc *sc);
177static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb);
178static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb);
179static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
180static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio);
181static void ciss_cam_poll(struct cam_sim *sim);
182static void ciss_cam_complete(struct ciss_request *cr);
183static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio);
184static struct cam_periph *ciss_find_periph(struct ciss_softc *sc,
185 int bus, int target);
186static int ciss_name_device(struct ciss_softc *sc, int bus, int target);
187
188/* periodic status monitoring */
189static void ciss_periodic(void *arg);
190static void ciss_nop_complete(struct ciss_request *cr);
191static void ciss_disable_adapter(struct ciss_softc *sc);
192static void ciss_notify_event(struct ciss_softc *sc);
193static void ciss_notify_complete(struct ciss_request *cr);
194static int ciss_notify_abort(struct ciss_softc *sc);
195static int ciss_notify_abort_bmic(struct ciss_softc *sc);
196static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn);
197static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn);
198static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn);
199
200/* debugging output */
201static void ciss_print_request(struct ciss_request *cr);
202static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld);
203static const char *ciss_name_ldrive_status(int status);
204static int ciss_decode_ldrive_status(int status);
205static const char *ciss_name_ldrive_org(int org);
206static const char *ciss_name_command_status(int status);
207
208/*
209 * PCI bus interface.
210 */
211static device_method_t ciss_methods[] = {
212 /* Device interface */
213 DEVMETHOD(device_probe, ciss_probe),
214 DEVMETHOD(device_attach, ciss_attach),
215 DEVMETHOD(device_detach, ciss_detach),
216 DEVMETHOD(device_shutdown, ciss_shutdown),
217 { 0, 0 }
218};
219
220static driver_t ciss_pci_driver = {
221 "ciss",
222 ciss_methods,
223 sizeof(struct ciss_softc)
224};
225
226static devclass_t ciss_devclass;
227DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0);
228MODULE_DEPEND(ciss, cam, 1, 1, 1);
229MODULE_DEPEND(ciss, pci, 1, 1, 1);
230
231/*
232 * Control device interface.
233 */
234static d_open_t ciss_open;
235static d_close_t ciss_close;
236static d_ioctl_t ciss_ioctl;
237
238static struct cdevsw ciss_cdevsw = {
239 .d_version = D_VERSION,
240 .d_flags = 0,
241 .d_open = ciss_open,
242 .d_close = ciss_close,
243 .d_ioctl = ciss_ioctl,
244 .d_name = "ciss",
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 */
251static unsigned int ciss_expose_hidden_physical = 0;
252TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical);
253
254static unsigned int ciss_nop_message_heartbeat = 0;
255TUNABLE_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 */
263static int ciss_force_transport = 0;
264TUNABLE_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 */
272static int ciss_force_interrupt = 0;
273TUNABLE_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_SA5 (1<<0)
283#define CISS_BOARD_SA5B (1<<1)
284
285static struct
286{
287 u_int16_t subvendor;
288 u_int16_t subdevice;
289 int flags;
290 char *desc;
291} ciss_vendor_data[] = {
292 { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" },
293 { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" },
294 { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" },
295 { 0x0e11, 0x4083, CISS_BOARD_SA5B, "HP Smart Array 5312" },
296 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" },
297 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" },
298 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" },
299 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" },
300 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" },
301 { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" },
302 { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" },
303 { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" },
304 { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" },
305 { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" },
306 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" },
307 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" },
308 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" },
309 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" },
310 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" },
311 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" },
312 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" },
313 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" },
314 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" },
315 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" },
316 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" },
317 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array E500" },
318 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" },
319 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" },
320 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" },
321 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" },
322 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" },
323 { 0x103C, 0x323D, CISS_BOARD_SA5, "HP Smart Array P700m" },
324 { 0x103C, 0x3241, CISS_BOARD_SA5, "HP Smart Array P212" },
325 { 0x103C, 0x3243, CISS_BOARD_SA5, "HP Smart Array P410" },
326 { 0x103C, 0x3245, CISS_BOARD_SA5, "HP Smart Array P410i" },
327 { 0x103C, 0x3247, CISS_BOARD_SA5, "HP Smart Array P411" },
328 { 0x103C, 0x3249, CISS_BOARD_SA5, "HP Smart Array P812" },
329 { 0x103C, 0x324A, CISS_BOARD_SA5, "HP Smart Array P712m" },
330 { 0x103C, 0x324B, CISS_BOARD_SA5, "HP Smart Array" },
331 { 0, 0, 0, NULL }
332};
333
334/************************************************************************
335 * Find a match for the device in our list of known adapters.
336 */
337static int
338ciss_lookup(device_t dev)
339{
340 int i;
341
342 for (i = 0; ciss_vendor_data[i].desc != NULL; i++)
343 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) &&
344 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) {
345 return(i);
346 }
347 return(-1);
348}
349
350/************************************************************************
351 * Match a known CISS adapter.
352 */
353static int
354ciss_probe(device_t dev)
355{
356 int i;
357
358 i = ciss_lookup(dev);
359 if (i != -1) {
360 device_set_desc(dev, ciss_vendor_data[i].desc);
361 return(BUS_PROBE_DEFAULT);
362 }
363 return(ENOENT);
364}
365
366/************************************************************************
367 * Attach the driver to this adapter.
368 */
369static int
370ciss_attach(device_t dev)
371{
372 struct ciss_softc *sc;
373 int error;
374
375 debug_called(1);
376
377#ifdef CISS_DEBUG
378 /* print structure/union sizes */
379 debug_struct(ciss_command);
380 debug_struct(ciss_header);
381 debug_union(ciss_device_address);
382 debug_struct(ciss_cdb);
383 debug_struct(ciss_report_cdb);
384 debug_struct(ciss_notify_cdb);
385 debug_struct(ciss_notify);
386 debug_struct(ciss_message_cdb);
387 debug_struct(ciss_error_info_pointer);
388 debug_struct(ciss_error_info);
389 debug_struct(ciss_sg_entry);
390 debug_struct(ciss_config_table);
391 debug_struct(ciss_bmic_cdb);
392 debug_struct(ciss_bmic_id_ldrive);
393 debug_struct(ciss_bmic_id_lstatus);
394 debug_struct(ciss_bmic_id_table);
395 debug_struct(ciss_bmic_id_pdrive);
396 debug_struct(ciss_bmic_blink_pdrive);
397 debug_struct(ciss_bmic_flush_cache);
398 debug_const(CISS_MAX_REQUESTS);
399 debug_const(CISS_MAX_LOGICAL);
400 debug_const(CISS_INTERRUPT_COALESCE_DELAY);
401 debug_const(CISS_INTERRUPT_COALESCE_COUNT);
402 debug_const(CISS_COMMAND_ALLOC_SIZE);
403 debug_const(CISS_COMMAND_SG_LENGTH);
404
405 debug_type(cciss_pci_info_struct);
406 debug_type(cciss_coalint_struct);
407 debug_type(cciss_coalint_struct);
408 debug_type(NodeName_type);
409 debug_type(NodeName_type);
410 debug_type(Heartbeat_type);
411 debug_type(BusTypes_type);
412 debug_type(FirmwareVer_type);
413 debug_type(DriverVer_type);
414 debug_type(IOCTL_Command_struct);
415#endif
416
417 sc = device_get_softc(dev);
418 sc->ciss_dev = dev;
419
420 /*
421 * Do PCI-specific init.
422 */
423 if ((error = ciss_init_pci(sc)) != 0)
424 goto out;
425
426 /*
427 * Initialise driver queues.
428 */
429 ciss_initq_free(sc);
430 ciss_initq_notify(sc);
431 mtx_init(&sc->ciss_mtx, "cissmtx", NULL, MTX_DEF);
432 callout_init_mtx(&sc->ciss_periodic, &sc->ciss_mtx, 0);
433
434 /*
435 * Initalize device sysctls.
436 */
437 ciss_init_sysctl(sc);
438
439 /*
440 * Initialise command/request pool.
441 */
442 if ((error = ciss_init_requests(sc)) != 0)
443 goto out;
444
445 /*
446 * Get adapter information.
447 */
448 if ((error = ciss_identify_adapter(sc)) != 0)
449 goto out;
450
451 /*
452 * Find all the physical devices.
453 */
454 if ((error = ciss_init_physical(sc)) != 0)
455 goto out;
456
457 /*
458 * Build our private table of logical devices.
459 */
460 if ((error = ciss_init_logical(sc)) != 0)
461 goto out;
462
463 /*
464 * Enable interrupts so that the CAM scan can complete.
465 */
466 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc);
467
468 /*
469 * Initialise the CAM interface.
470 */
471 if ((error = ciss_cam_init(sc)) != 0)
472 goto out;
473
474 /*
475 * Start the heartbeat routine and event chain.
476 */
477 ciss_periodic(sc);
478
479 /*
480 * Create the control device.
481 */
482 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev),
483 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
484 "ciss%d", device_get_unit(sc->ciss_dev));
485 sc->ciss_dev_t->si_drv1 = sc;
486
487 /*
488 * The adapter is running; synchronous commands can now sleep
489 * waiting for an interrupt to signal completion.
490 */
491 sc->ciss_flags |= CISS_FLAG_RUNNING;
492
493 ciss_spawn_notify_thread(sc);
494
495 error = 0;
496 out:
497 if (error != 0)
498 ciss_free(sc);
499 return(error);
500}
501
502/************************************************************************
503 * Detach the driver from this adapter.
504 */
505static int
506ciss_detach(device_t dev)
507{
508 struct ciss_softc *sc = device_get_softc(dev);
509
510 debug_called(1);
511
512 mtx_lock(&sc->ciss_mtx);
513 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) {
514 mtx_unlock(&sc->ciss_mtx);
515 return (EBUSY);
516 }
517
518 /* flush adapter cache */
519 ciss_flush_adapter(sc);
520
521 /* release all resources. The mutex is released and freed here too. */
522 ciss_free(sc);
523
524 return(0);
525}
526
527/************************************************************************
528 * Prepare adapter for system shutdown.
529 */
530static int
531ciss_shutdown(device_t dev)
532{
533 struct ciss_softc *sc = device_get_softc(dev);
534
535 debug_called(1);
536
537 mtx_lock(&sc->ciss_mtx);
538 /* flush adapter cache */
539 ciss_flush_adapter(sc);
540
541 if (sc->ciss_soft_reset)
542 ciss_soft_reset(sc);
543 mtx_unlock(&sc->ciss_mtx);
544
545 return(0);
546}
547
548static void
549ciss_init_sysctl(struct ciss_softc *sc)
550{
551
552 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev),
553 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)),
554 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, "");
555}
556
557/************************************************************************
558 * Perform PCI-specific attachment actions.
559 */
560static int
561ciss_init_pci(struct ciss_softc *sc)
562{
563 uintptr_t cbase, csize, cofs;
564 uint32_t method, supported_methods;
565 int error, sqmask, i;
566 void *intr;
567
568 debug_called(1);
569
570 /*
571 * Work out adapter type.
572 */
573 i = ciss_lookup(sc->ciss_dev);
574 if (i < 0) {
575 ciss_printf(sc, "unknown adapter type\n");
576 return (ENXIO);
577 }
578
579 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) {
580 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5;
581 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) {
582 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5B;
583 } else {
584 /*
585 * XXX Big hammer, masks/unmasks all possible interrupts. This should
586 * work on all hardware variants. Need to add code to handle the
587 * "controller crashed" interupt bit that this unmasks.
588 */
589 sqmask = ~0;
590 }
591
592 /*
593 * Allocate register window first (we need this to find the config
594 * struct).
595 */
596 error = ENXIO;
597 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS;
598 if ((sc->ciss_regs_resource =
599 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
600 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) {
601 ciss_printf(sc, "can't allocate register window\n");
602 return(ENXIO);
603 }
604 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource);
605 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource);
606
607 /*
608 * Find the BAR holding the config structure. If it's not the one
609 * we already mapped for registers, map it too.
610 */
611 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff;
612 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) {
613 if ((sc->ciss_cfg_resource =
614 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
615 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) {
616 ciss_printf(sc, "can't allocate config window\n");
617 return(ENXIO);
618 }
619 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource);
620 csize = rman_get_end(sc->ciss_cfg_resource) -
621 rman_get_start(sc->ciss_cfg_resource) + 1;
622 } else {
623 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource);
624 csize = rman_get_end(sc->ciss_regs_resource) -
625 rman_get_start(sc->ciss_regs_resource) + 1;
626 }
627 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF);
628
629 /*
630 * Use the base/size/offset values we just calculated to
631 * sanity-check the config structure. If it's OK, point to it.
632 */
633 if ((cofs + sizeof(struct ciss_config_table)) > csize) {
634 ciss_printf(sc, "config table outside window\n");
635 return(ENXIO);
636 }
637 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs);
638 debug(1, "config struct at %p", sc->ciss_cfg);
639
640 /*
641 * Calculate the number of request structures/commands we are
642 * going to provide for this adapter.
643 */
644 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands);
645
646 /*
647 * Validate the config structure. If we supported other transport
648 * methods, we could select amongst them at this point in time.
649 */
650 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) {
651 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n",
652 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1],
653 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]);
654 return(ENXIO);
655 }
656
657 /*
658 * Select the mode of operation, prefer Performant.
659 */
660 if (!(sc->ciss_cfg->supported_methods &
661 (CISS_TRANSPORT_METHOD_SIMPLE | CISS_TRANSPORT_METHOD_PERF))) {
662 ciss_printf(sc, "No supported transport layers: 0x%x\n",
663 sc->ciss_cfg->supported_methods);
664 return(ENXIO);
665 }
666
667 switch (ciss_force_transport) {
668 case 1:
669 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
670 break;
671 case 2:
672 supported_methods = CISS_TRANSPORT_METHOD_PERF;
673 break;
674 default:
675 supported_methods = sc->ciss_cfg->supported_methods;
676 break;
677 }
678
679setup:
680 if (supported_methods & CISS_TRANSPORT_METHOD_PERF) {
681 method = CISS_TRANSPORT_METHOD_PERF;
682 sc->ciss_perf = (struct ciss_perf_config *)(cbase + cofs +
683 sc->ciss_cfg->transport_offset);
684 if (ciss_init_perf(sc)) {
685 supported_methods &= ~method;
686 goto setup;
687 }
688 } else if (supported_methods & CISS_TRANSPORT_METHOD_SIMPLE) {
689 method = CISS_TRANSPORT_METHOD_SIMPLE;
690 } else {
691 ciss_printf(sc, "No supported transport methods: 0x%x\n",
692 sc->ciss_cfg->supported_methods);
693 return(ENXIO);
694 }
695
696 /*
697 * Tell it we're using the low 4GB of RAM. Set the default interrupt
698 * coalescing options.
699 */
700 sc->ciss_cfg->requested_method = method;
701 sc->ciss_cfg->command_physlimit = 0;
702 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY;
703 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT;
704
705#ifdef __i386__
706 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH;
707#endif
708
709 if (ciss_update_config(sc)) {
710 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n",
711 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR));
712 return(ENXIO);
713 }
714 if ((sc->ciss_cfg->active_method & method) == 0) {
715 supported_methods &= ~method;
716 if (supported_methods == 0) {
717 ciss_printf(sc, "adapter refuses to go into available transports "
718 "mode (0x%x, 0x%x)\n", supported_methods,
719 sc->ciss_cfg->active_method);
720 return(ENXIO);
721 } else
722 goto setup;
723 }
724
725 /*
726 * Wait for the adapter to come ready.
727 */
728 if ((error = ciss_wait_adapter(sc)) != 0)
729 return(error);
730
731 /* Prepare to possibly use MSIX and/or PERFORMANT interrupts. Normal
732 * interrupts have a rid of 0, this will be overridden if MSIX is used.
733 */
734 sc->ciss_irq_rid[0] = 0;
735 if (method == CISS_TRANSPORT_METHOD_PERF) {
736 ciss_printf(sc, "PERFORMANT Transport\n");
737 if ((ciss_force_interrupt != 1) && (ciss_setup_msix(sc) == 0)) {
738 intr = ciss_perf_msi_intr;
739 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_MSI;
740 } else {
741 intr = ciss_perf_intr;
742 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_OPQ;
743 }
744 } else {
745 ciss_printf(sc, "SIMPLE Transport\n");
746 /* MSIX doesn't seem to work in SIMPLE mode, only enable if it forced */
747 if (ciss_force_interrupt == 2)
748 /* If this fails, we automatically revert to INTx */
749 ciss_setup_msix(sc);
750 sc->ciss_perf = NULL;
751 intr = ciss_intr;
752 sc->ciss_interrupt_mask = sqmask;
753 }
754
755 /*
756 * Turn off interrupts before we go routing anything.
757 */
758 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
759
760 /*
761 * Allocate and set up our interrupt.
762 */
763 if ((sc->ciss_irq_resource =
764 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid[0],
765 RF_ACTIVE | RF_SHAREABLE)) == NULL) {
766 ciss_printf(sc, "can't allocate interrupt\n");
767 return(ENXIO);
768 }
769
770 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource,
771 INTR_TYPE_CAM|INTR_MPSAFE, NULL, intr, sc,
772 &sc->ciss_intr)) {
773 ciss_printf(sc, "can't set up interrupt\n");
774 return(ENXIO);
775 }
776
777 /*
778 * Allocate the parent bus DMA tag appropriate for our PCI
779 * interface.
780 *
781 * Note that "simple" adapters can only address within a 32-bit
782 * span.
783 */
784 if (bus_dma_tag_create(NULL, /* parent */
785 1, 0, /* alignment, boundary */
786 BUS_SPACE_MAXADDR, /* lowaddr */
787 BUS_SPACE_MAXADDR, /* highaddr */
788 NULL, NULL, /* filter, filterarg */
789 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
790 CISS_COMMAND_SG_LENGTH, /* nsegments */
791 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
792 0, /* flags */
793 NULL, NULL, /* lockfunc, lockarg */
794 &sc->ciss_parent_dmat)) {
795 ciss_printf(sc, "can't allocate parent DMA tag\n");
796 return(ENOMEM);
797 }
798
799 /*
800 * Create DMA tag for mapping buffers into adapter-addressable
801 * space.
802 */
803 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
804 1, 0, /* alignment, boundary */
805 BUS_SPACE_MAXADDR, /* lowaddr */
806 BUS_SPACE_MAXADDR, /* highaddr */
807 NULL, NULL, /* filter, filterarg */
808 MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */
809 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
810 BUS_DMA_ALLOCNOW, /* flags */
811 busdma_lock_mutex, &sc->ciss_mtx, /* lockfunc, lockarg */
812 &sc->ciss_buffer_dmat)) {
813 ciss_printf(sc, "can't allocate buffer DMA tag\n");
814 return(ENOMEM);
815 }
816 return(0);
817}
818
819/************************************************************************
820 * Setup MSI/MSIX operation (Performant only)
821 * Four interrupts are available, but we only use 1 right now.
822 */
823static int
824ciss_setup_msix(struct ciss_softc *sc)
825{
826 uint32_t id;
827 int val, i;
828
829 /* Weed out devices that don't actually support MSI */
830 id = (pci_get_subvendor(sc->ciss_dev) << 16) |
831 pci_get_subdevice(sc->ciss_dev);
832 if ((id == 0x0e114070) || (id == 0x0e114080) || (id == 0x0e114082) ||
833 (id == 0x0e114083))
834 return (EINVAL);
835
836 val = pci_msix_count(sc->ciss_dev);
837 if ((val != CISS_MSI_COUNT) || (pci_alloc_msix(sc->ciss_dev, &val) != 0))
838 return (EINVAL);
839
840 sc->ciss_msi = val;
841 ciss_printf(sc, "Using MSIX interrupt\n");
842
843 for (i = 0; i < CISS_MSI_COUNT; i++)
844 sc->ciss_irq_rid[i] = i + 1;
845
846 return (0);
847
848}
849
850/************************************************************************
851 * Setup the Performant structures.
852 */
853static int
854ciss_init_perf(struct ciss_softc *sc)
855{
856 struct ciss_perf_config *pc = sc->ciss_perf;
857 int reply_size;
858
859 /*
860 * Create the DMA tag for the reply queue.
861 */
862 reply_size = sizeof(uint64_t) * sc->ciss_max_requests;
863 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
864 1, 0, /* alignment, boundary */
865 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
866 BUS_SPACE_MAXADDR, /* highaddr */
867 NULL, NULL, /* filter, filterarg */
868 reply_size, 1, /* maxsize, nsegments */
869 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
870 0, /* flags */
871 NULL, NULL, /* lockfunc, lockarg */
872 &sc->ciss_reply_dmat)) {
873 ciss_printf(sc, "can't allocate reply DMA tag\n");
874 return(ENOMEM);
875 }
876 /*
877 * Allocate memory and make it available for DMA.
878 */
879 if (bus_dmamem_alloc(sc->ciss_reply_dmat, (void **)&sc->ciss_reply,
880 BUS_DMA_NOWAIT, &sc->ciss_reply_map)) {
881 ciss_printf(sc, "can't allocate reply memory\n");
882 return(ENOMEM);
883 }
884 bus_dmamap_load(sc->ciss_reply_dmat, sc->ciss_reply_map, sc->ciss_reply,
885 reply_size, ciss_command_map_helper, &sc->ciss_reply_phys, 0);
886 bzero(sc->ciss_reply, reply_size);
887
888 sc->ciss_cycle = 0x1;
889 sc->ciss_rqidx = 0;
890
891 /*
892 * Preload the fetch table with common command sizes. This allows the
893 * hardware to not waste bus cycles for typical i/o commands, but also not
894 * tax the driver to be too exact in choosing sizes. The table is optimized
895 * for page-aligned i/o's, but since most i/o comes from the various pagers,
896 * it's a reasonable assumption to make.
897 */
898 pc->fetch_count[CISS_SG_FETCH_NONE] = (sizeof(struct ciss_command) + 15) / 16;
899 pc->fetch_count[CISS_SG_FETCH_1] =
900 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 1 + 15) / 16;
901 pc->fetch_count[CISS_SG_FETCH_2] =
902 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 2 + 15) / 16;
903 pc->fetch_count[CISS_SG_FETCH_4] =
904 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 4 + 15) / 16;
905 pc->fetch_count[CISS_SG_FETCH_8] =
906 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 8 + 15) / 16;
907 pc->fetch_count[CISS_SG_FETCH_16] =
908 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 16 + 15) / 16;
909 pc->fetch_count[CISS_SG_FETCH_32] =
910 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 32 + 15) / 16;
911 pc->fetch_count[CISS_SG_FETCH_MAX] = (CISS_COMMAND_ALLOC_SIZE + 15) / 16;
912
913 pc->rq_size = sc->ciss_max_requests; /* XXX less than the card supports? */
914 pc->rq_count = 1; /* XXX Hardcode for a single queue */
915 pc->rq_bank_hi = 0;
916 pc->rq_bank_lo = 0;
917 pc->rq[0].rq_addr_hi = 0x0;
918 pc->rq[0].rq_addr_lo = sc->ciss_reply_phys;
919
920 return(0);
921}
922
923/************************************************************************
924 * Wait for the adapter to come ready.
925 */
926static int
927ciss_wait_adapter(struct ciss_softc *sc)
928{
929 int i;
930
931 debug_called(1);
932
933 /*
934 * Wait for the adapter to come ready.
935 */
936 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) {
937 ciss_printf(sc, "waiting for adapter to come ready...\n");
938 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) {
939 DELAY(1000000); /* one second */
940 if (i > 30) {
941 ciss_printf(sc, "timed out waiting for adapter to come ready\n");
942 return(EIO);
943 }
944 }
945 }
946 return(0);
947}
948
949/************************************************************************
950 * Flush the adapter cache.
951 */
952static int
953ciss_flush_adapter(struct ciss_softc *sc)
954{
955 struct ciss_request *cr;
956 struct ciss_bmic_flush_cache *cbfc;
957 int error, command_status;
958
959 debug_called(1);
960
961 cr = NULL;
962 cbfc = NULL;
963
964 /*
965 * Build a BMIC request to flush the cache. We don't disable
966 * it, as we may be going to do more I/O (eg. we are emulating
967 * the Synchronise Cache command).
968 */
969 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
970 error = ENOMEM;
971 goto out;
972 }
973 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE,
974 (void **)&cbfc, sizeof(*cbfc))) != 0)
975 goto out;
976
977 /*
978 * Submit the request and wait for it to complete.
979 */
980 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
981 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error);
982 goto out;
983 }
984
985 /*
986 * Check response.
987 */
988 ciss_report_request(cr, &command_status, NULL);
989 switch(command_status) {
990 case CISS_CMD_STATUS_SUCCESS:
991 break;
992 default:
993 ciss_printf(sc, "error flushing cache (%s)\n",
994 ciss_name_command_status(command_status));
995 error = EIO;
996 goto out;
997 }
998
999out:
1000 if (cbfc != NULL)
1001 free(cbfc, CISS_MALLOC_CLASS);
1002 if (cr != NULL)
1003 ciss_release_request(cr);
1004 return(error);
1005}
1006
1007static void
1008ciss_soft_reset(struct ciss_softc *sc)
1009{
1010 struct ciss_request *cr = NULL;
1011 struct ciss_command *cc;
1012 int i, error = 0;
1013
1014 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1015 /* only reset proxy controllers */
1016 if (sc->ciss_controllers[i].physical.bus == 0)
1017 continue;
1018
1019 if ((error = ciss_get_request(sc, &cr)) != 0)
1020 break;
1021
1022 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET,
1023 NULL, 0)) != 0)
1024 break;
1025
1026 cc = CISS_FIND_COMMAND(cr);
1027 cc->header.address = sc->ciss_controllers[i];
1028
1029 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0)
1030 break;
1031
1032 ciss_release_request(cr);
1033 }
1034
1035 if (error)
1036 ciss_printf(sc, "error resetting controller (%d)\n", error);
1037
1038 if (cr != NULL)
1039 ciss_release_request(cr);
1040}
1041
1042/************************************************************************
1043 * Allocate memory for the adapter command structures, initialise
1044 * the request structures.
1045 *
1046 * Note that the entire set of commands are allocated in a single
1047 * contiguous slab.
1048 */
1049static int
1050ciss_init_requests(struct ciss_softc *sc)
1051{
1052 struct ciss_request *cr;
1053 int i;
1054
1055 debug_called(1);
1056
1057 if (bootverbose)
1058 ciss_printf(sc, "using %d of %d available commands\n",
1059 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands);
1060
1061 /*
1062 * Create the DMA tag for commands.
1063 */
1064 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
1065 32, 0, /* alignment, boundary */
1066 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1067 BUS_SPACE_MAXADDR, /* highaddr */
1068 NULL, NULL, /* filter, filterarg */
1069 CISS_COMMAND_ALLOC_SIZE *
1070 sc->ciss_max_requests, 1, /* maxsize, nsegments */
1071 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1072 0, /* flags */
1073 NULL, NULL, /* lockfunc, lockarg */
1074 &sc->ciss_command_dmat)) {
1075 ciss_printf(sc, "can't allocate command DMA tag\n");
1076 return(ENOMEM);
1077 }
1078 /*
1079 * Allocate memory and make it available for DMA.
1080 */
1081 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command,
1082 BUS_DMA_NOWAIT, &sc->ciss_command_map)) {
1083 ciss_printf(sc, "can't allocate command memory\n");
1084 return(ENOMEM);
1085 }
1086 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map,sc->ciss_command,
1087 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests,
1088 ciss_command_map_helper, &sc->ciss_command_phys, 0);
1089 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests);
1090
1091 /*
1092 * Set up the request and command structures, push requests onto
1093 * the free queue.
1094 */
1095 for (i = 1; i < sc->ciss_max_requests; i++) {
1096 cr = &sc->ciss_request[i];
1097 cr->cr_sc = sc;
1098 cr->cr_tag = i;
1099 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap);
1100 ciss_enqueue_free(cr);
1101 }
1102 return(0);
1103}
1104
1105static void
1106ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1107{
1108 uint32_t *addr;
1109
1110 addr = arg;
1111 *addr = segs[0].ds_addr;
1112}
1113
1114/************************************************************************
1115 * Identify the adapter, print some information about it.
1116 */
1117static int
1118ciss_identify_adapter(struct ciss_softc *sc)
1119{
1120 struct ciss_request *cr;
1121 int error, command_status;
1122
1123 debug_called(1);
1124
1125 cr = NULL;
1126
1127 /*
1128 * Get a request, allocate storage for the adapter data.
1129 */
1130 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR,
1131 (void **)&sc->ciss_id,
1132 sizeof(*sc->ciss_id))) != 0)
1133 goto out;
1134
1135 /*
1136 * Submit the request and wait for it to complete.
1137 */
1138 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1139 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error);
1140 goto out;
1141 }
1142
1143 /*
1144 * Check response.
1145 */
1146 ciss_report_request(cr, &command_status, NULL);
1147 switch(command_status) {
1148 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1149 break;
1150 case CISS_CMD_STATUS_DATA_UNDERRUN:
1151 case CISS_CMD_STATUS_DATA_OVERRUN:
1152 ciss_printf(sc, "data over/underrun reading adapter information\n");
1153 default:
1154 ciss_printf(sc, "error reading adapter information (%s)\n",
1155 ciss_name_command_status(command_status));
1156 error = EIO;
1157 goto out;
1158 }
1159
1160 /* sanity-check reply */
1161 if (!sc->ciss_id->big_map_supported) {
1162 ciss_printf(sc, "adapter does not support BIG_MAP\n");
1163 error = ENXIO;
1164 goto out;
1165 }
1166
1167#if 0
1168 /* XXX later revisions may not need this */
1169 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH;
1170#endif
1171
1172 /* XXX only really required for old 5300 adapters? */
1173 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT;
1174
1175 /* print information */
1176 if (bootverbose) {
1177#if 0 /* XXX proxy volumes??? */
1178 ciss_printf(sc, " %d logical drive%s configured\n",
1179 sc->ciss_id->configured_logical_drives,
1180 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s");
1181#endif
1182 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision);
1183 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count);
1184
1185 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature);
1186 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence);
1187 ciss_printf(sc, " supported I/O methods 0x%b\n",
1188 sc->ciss_cfg->supported_methods,
1189 "\20\1READY\2simple\3performant\4MEMQ\n");
1190 ciss_printf(sc, " active I/O method 0x%b\n",
1191 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n");
1192 ciss_printf(sc, " 4G page base 0x%08x\n",
1193 sc->ciss_cfg->command_physlimit);
1194 ciss_printf(sc, " interrupt coalesce delay %dus\n",
1195 sc->ciss_cfg->interrupt_coalesce_delay);
1196 ciss_printf(sc, " interrupt coalesce count %d\n",
1197 sc->ciss_cfg->interrupt_coalesce_count);
1198 ciss_printf(sc, " max outstanding commands %d\n",
1199 sc->ciss_cfg->max_outstanding_commands);
1200 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types,
1201 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n");
1202 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name);
1203 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat);
1204 }
1205
1206out:
1207 if (error) {
1208 if (sc->ciss_id != NULL) {
1209 free(sc->ciss_id, CISS_MALLOC_CLASS);
1210 sc->ciss_id = NULL;
1211 }
1212 }
1213 if (cr != NULL)
1214 ciss_release_request(cr);
1215 return(error);
1216}
1217
1218/************************************************************************
1219 * Helper routine for generating a list of logical and physical luns.
1220 */
1221static struct ciss_lun_report *
1222ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits)
1223{
1224 struct ciss_request *cr;
1225 struct ciss_command *cc;
1226 struct ciss_report_cdb *crc;
1227 struct ciss_lun_report *cll;
1228 int command_status;
1229 int report_size;
1230 int error = 0;
1231
1232 debug_called(1);
1233
1234 cr = NULL;
1235 cll = NULL;
1236
1237 /*
1238 * Get a request, allocate storage for the address list.
1239 */
1240 if ((error = ciss_get_request(sc, &cr)) != 0)
1241 goto out;
1242 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address);
1243 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1244 ciss_printf(sc, "can't allocate memory for lun report\n");
1245 error = ENOMEM;
1246 goto out;
1247 }
1248
1249 /*
1250 * Build the Report Logical/Physical LUNs command.
1251 */
1252 cc = CISS_FIND_COMMAND(cr);
1253 cr->cr_data = cll;
1254 cr->cr_length = report_size;
1255 cr->cr_flags = CISS_REQ_DATAIN;
1256
1257 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
1258 cc->header.address.physical.bus = 0;
1259 cc->header.address.physical.target = 0;
1260 cc->cdb.cdb_length = sizeof(*crc);
1261 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1262 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1263 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1264 cc->cdb.timeout = 30; /* XXX better suggestions? */
1265
1266 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]);
1267 bzero(crc, sizeof(*crc));
1268 crc->opcode = opcode;
1269 crc->length = htonl(report_size); /* big-endian field */
1270 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */
1271
1272 /*
1273 * Submit the request and wait for it to complete. (timeout
1274 * here should be much greater than above)
1275 */
1276 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1277 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error);
1278 goto out;
1279 }
1280
1281 /*
1282 * Check response. Note that data over/underrun is OK.
1283 */
1284 ciss_report_request(cr, &command_status, NULL);
1285 switch(command_status) {
1286 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1287 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */
1288 break;
1289 case CISS_CMD_STATUS_DATA_OVERRUN:
1290 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n",
1291 CISS_MAX_LOGICAL);
1292 break;
1293 default:
1294 ciss_printf(sc, "error detecting logical drive configuration (%s)\n",
1295 ciss_name_command_status(command_status));
1296 error = EIO;
1297 goto out;
1298 }
1299 ciss_release_request(cr);
1300 cr = NULL;
1301
1302out:
1303 if (cr != NULL)
1304 ciss_release_request(cr);
1305 if (error && cll != NULL) {
1306 free(cll, CISS_MALLOC_CLASS);
1307 cll = NULL;
1308 }
1309 return(cll);
1310}
1311
1312/************************************************************************
1313 * Find logical drives on the adapter.
1314 */
1315static int
1316ciss_init_logical(struct ciss_softc *sc)
1317{
1318 struct ciss_lun_report *cll;
1319 int error = 0, i, j;
1320 int ndrives;
1321
1322 debug_called(1);
1323
1324 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
1325 CISS_MAX_LOGICAL);
1326 if (cll == NULL) {
1327 error = ENXIO;
1328 goto out;
1329 }
1330
1331 /* sanity-check reply */
1332 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1333 if ((ndrives < 0) || (ndrives >= CISS_MAX_LOGICAL)) {
1334 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n",
1335 ndrives, CISS_MAX_LOGICAL);
1336 error = ENXIO;
1337 goto out;
1338 }
1339
1340 /*
1341 * Save logical drive information.
1342 */
1343 if (bootverbose) {
1344 ciss_printf(sc, "%d logical drive%s\n",
1345 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : "");
1346 }
1347
1348 sc->ciss_logical =
1349 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *),
1350 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1351 if (sc->ciss_logical == NULL) {
1352 error = ENXIO;
1353 goto out;
1354 }
1355
1356 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1357 sc->ciss_logical[i] =
1358 malloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive),
1359 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1360 if (sc->ciss_logical[i] == NULL) {
1361 error = ENXIO;
1362 goto out;
1363 }
1364
1365 for (j = 0; j < CISS_MAX_LOGICAL; j++)
1366 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT;
1367 }
1368
1369
1370 for (i = 0; i < CISS_MAX_LOGICAL; i++) {
1371 if (i < ndrives) {
1372 struct ciss_ldrive *ld;
1373 int bus, target;
1374
1375 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
1376 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
1377 ld = &sc->ciss_logical[bus][target];
1378
1379 ld->cl_address = cll->lun[i];
1380 ld->cl_controller = &sc->ciss_controllers[bus];
1381 if (ciss_identify_logical(sc, ld) != 0)
1382 continue;
1383 /*
1384 * If the drive has had media exchanged, we should bring it online.
1385 */
1386 if (ld->cl_lstatus->media_exchanged)
1387 ciss_accept_media(sc, ld);
1388
1389 }
1390 }
1391
1392 out:
1393 if (cll != NULL)
1394 free(cll, CISS_MALLOC_CLASS);
1395 return(error);
1396}
1397
1398static int
1399ciss_init_physical(struct ciss_softc *sc)
1400{
1401 struct ciss_lun_report *cll;
1402 int error = 0, i;
1403 int nphys;
1404 int bus, target;
1405
1406 debug_called(1);
1407
1408 bus = 0;
1409 target = 0;
1410
1411 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
1412 CISS_MAX_PHYSICAL);
1413 if (cll == NULL) {
1414 error = ENXIO;
1415 goto out;
1416 }
1417
1418 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1419
1420 if (bootverbose) {
1421 ciss_printf(sc, "%d physical device%s\n",
1422 nphys, (nphys > 1 || nphys == 0) ? "s" : "");
1423 }
1424
1425 /*
1426 * Figure out the bus mapping.
1427 * Logical buses include both the local logical bus for local arrays and
1428 * proxy buses for remote arrays. Physical buses are numbered by the
1429 * controller and represent physical buses that hold physical devices.
1430 * We shift these bus numbers so that everything fits into a single flat
1431 * numbering space for CAM. Logical buses occupy the first 32 CAM bus
1432 * numbers, and the physical bus numbers are shifted to be above that.
1433 * This results in the various driver arrays being indexed as follows:
1434 *
1435 * ciss_controllers[] - indexed by logical bus
1436 * ciss_cam_sim[] - indexed by both logical and physical, with physical
1437 * being shifted by 32.
1438 * ciss_logical[][] - indexed by logical bus
1439 * ciss_physical[][] - indexed by physical bus
1440 *
1441 * XXX This is getting more and more hackish. CISS really doesn't play
1442 * well with a standard SCSI model; devices are addressed via magic
1443 * cookies, not via b/t/l addresses. Since there is no way to store
1444 * the cookie in the CAM device object, we have to keep these lookup
1445 * tables handy so that the devices can be found quickly at the cost
1446 * of wasting memory and having a convoluted lookup scheme. This
1447 * driver should probably be converted to block interface.
1448 */
1449 /*
1450 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy
1451 * controller. A proxy controller is another physical controller
1452 * behind the primary PCI controller. We need to know about this
1453 * so that BMIC commands can be properly targeted. There can be
1454 * proxy controllers attached to a single PCI controller, so
1455 * find the highest numbered one so the array can be properly
1456 * sized.
1457 */
1458 sc->ciss_max_logical_bus = 1;
1459 for (i = 0; i < nphys; i++) {
1460 if (cll->lun[i].physical.extra_address == 0) {
1461 bus = cll->lun[i].physical.bus;
1462 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1;
1463 } else {
1464 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address);
1465 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus);
1466 }
1467 }
1468
1469 sc->ciss_controllers =
1470 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address),
1471 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1472
1473 if (sc->ciss_controllers == NULL) {
1474 ciss_printf(sc, "Could not allocate memory for controller map\n");
1475 error = ENOMEM;
1476 goto out;
1477 }
1478
1479 /* setup a map of controller addresses */
1480 for (i = 0; i < nphys; i++) {
1481 if (cll->lun[i].physical.extra_address == 0) {
1482 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i];
1483 }
1484 }
1485
1486 sc->ciss_physical =
1487 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *),
1488 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1489 if (sc->ciss_physical == NULL) {
1490 ciss_printf(sc, "Could not allocate memory for physical device map\n");
1491 error = ENOMEM;
1492 goto out;
1493 }
1494
1495 for (i = 0; i < sc->ciss_max_physical_bus; i++) {
1496 sc->ciss_physical[i] =
1497 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT,
1498 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1499 if (sc->ciss_physical[i] == NULL) {
1500 ciss_printf(sc, "Could not allocate memory for target map\n");
1501 error = ENOMEM;
1502 goto out;
1503 }
1504 }
1505
1506 ciss_filter_physical(sc, cll);
1507
1508out:
1509 if (cll != NULL)
1510 free(cll, CISS_MALLOC_CLASS);
1511
1512 return(error);
1513}
1514
1515static int
1516ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll)
1517{
1518 u_int32_t ea;
1519 int i, nphys;
1520 int bus, target;
1521
1522 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1523 for (i = 0; i < nphys; i++) {
1524 if (cll->lun[i].physical.extra_address == 0)
1525 continue;
1526
1527 /*
1528 * Filter out devices that we don't want. Level 3 LUNs could
1529 * probably be supported, but the docs don't give enough of a
1530 * hint to know how.
1531 *
1532 * The mode field of the physical address is likely set to have
1533 * hard disks masked out. Honor it unless the user has overridden
1534 * us with the tunable. We also munge the inquiry data for these
1535 * disks so that they only show up as passthrough devices. Keeping
1536 * them visible in this fashion is useful for doing things like
1537 * flashing firmware.
1538 */
1539 ea = cll->lun[i].physical.extra_address;
1540 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) ||
1541 (CISS_EXTRA_MODE2(ea) == 0x3))
1542 continue;
1543 if ((ciss_expose_hidden_physical == 0) &&
1544 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL))
1545 continue;
1546
1547 /*
1548 * Note: CISS firmware numbers physical busses starting at '1', not
1549 * '0'. This numbering is internal to the firmware and is only
1550 * used as a hint here.
1551 */
1552 bus = CISS_EXTRA_BUS2(ea) - 1;
1553 target = CISS_EXTRA_TARGET2(ea);
1554 sc->ciss_physical[bus][target].cp_address = cll->lun[i];
1555 sc->ciss_physical[bus][target].cp_online = 1;
1556 }
1557
1558 return (0);
1559}
1560
1561static int
1562ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1563{
1564 struct ciss_request *cr;
1565 struct ciss_command *cc;
1566 struct scsi_inquiry *inq;
1567 int error;
1568 int command_status;
1569
1570 cr = NULL;
1571
1572 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry));
1573
1574 if ((error = ciss_get_request(sc, &cr)) != 0)
1575 goto out;
1576
1577 cc = CISS_FIND_COMMAND(cr);
1578 cr->cr_data = &ld->cl_geometry;
1579 cr->cr_length = sizeof(ld->cl_geometry);
1580 cr->cr_flags = CISS_REQ_DATAIN;
1581
1582 cc->header.address = ld->cl_address;
1583 cc->cdb.cdb_length = 6;
1584 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1585 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1586 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1587 cc->cdb.timeout = 30;
1588
1589 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]);
1590 inq->opcode = INQUIRY;
1591 inq->byte2 = SI_EVPD;
1592 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY;
1593 inq->length = sizeof(ld->cl_geometry);
1594
1595 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1596 ciss_printf(sc, "error getting geometry (%d)\n", error);
1597 goto out;
1598 }
1599
1600 ciss_report_request(cr, &command_status, NULL);
1601 switch(command_status) {
1602 case CISS_CMD_STATUS_SUCCESS:
1603 case CISS_CMD_STATUS_DATA_UNDERRUN:
1604 break;
1605 case CISS_CMD_STATUS_DATA_OVERRUN:
1606 ciss_printf(sc, "WARNING: Data overrun\n");
1607 break;
1608 default:
1609 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n",
1610 ciss_name_command_status(command_status));
1611 break;
1612 }
1613
1614out:
1615 if (cr != NULL)
1616 ciss_release_request(cr);
1617 return(error);
1618}
1619/************************************************************************
1620 * Identify a logical drive, initialise state related to it.
1621 */
1622static int
1623ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1624{
1625 struct ciss_request *cr;
1626 struct ciss_command *cc;
1627 struct ciss_bmic_cdb *cbc;
1628 int error, command_status;
1629
1630 debug_called(1);
1631
1632 cr = NULL;
1633
1634 /*
1635 * Build a BMIC request to fetch the drive ID.
1636 */
1637 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE,
1638 (void **)&ld->cl_ldrive,
1639 sizeof(*ld->cl_ldrive))) != 0)
1640 goto out;
1641 cc = CISS_FIND_COMMAND(cr);
1642 cc->header.address = *ld->cl_controller; /* target controller */
1643 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1644 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1645
1646 /*
1647 * Submit the request and wait for it to complete.
1648 */
1649 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1650 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error);
1651 goto out;
1652 }
1653
1654 /*
1655 * Check response.
1656 */
1657 ciss_report_request(cr, &command_status, NULL);
1658 switch(command_status) {
1659 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1660 break;
1661 case CISS_CMD_STATUS_DATA_UNDERRUN:
1662 case CISS_CMD_STATUS_DATA_OVERRUN:
1663 ciss_printf(sc, "data over/underrun reading logical drive ID\n");
1664 default:
1665 ciss_printf(sc, "error reading logical drive ID (%s)\n",
1666 ciss_name_command_status(command_status));
1667 error = EIO;
1668 goto out;
1669 }
1670 ciss_release_request(cr);
1671 cr = NULL;
1672
1673 /*
1674 * Build a CISS BMIC command to get the logical drive status.
1675 */
1676 if ((error = ciss_get_ldrive_status(sc, ld)) != 0)
1677 goto out;
1678
1679 /*
1680 * Get the logical drive geometry.
1681 */
1682 if ((error = ciss_inquiry_logical(sc, ld)) != 0)
1683 goto out;
1684
1685 /*
1686 * Print the drive's basic characteristics.
1687 */
1688 if (bootverbose) {
1689 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ",
1690 CISS_LUN_TO_BUS(ld->cl_address.logical.lun),
1691 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun),
1692 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance),
1693 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) *
1694 ld->cl_ldrive->block_size));
1695
1696 ciss_print_ldrive(sc, ld);
1697 }
1698out:
1699 if (error != 0) {
1700 /* make the drive not-exist */
1701 ld->cl_status = CISS_LD_NONEXISTENT;
1702 if (ld->cl_ldrive != NULL) {
1703 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
1704 ld->cl_ldrive = NULL;
1705 }
1706 if (ld->cl_lstatus != NULL) {
1707 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
1708 ld->cl_lstatus = NULL;
1709 }
1710 }
1711 if (cr != NULL)
1712 ciss_release_request(cr);
1713
1714 return(error);
1715}
1716
1717/************************************************************************
1718 * Get status for a logical drive.
1719 *
1720 * XXX should we also do this in response to Test Unit Ready?
1721 */
1722static int
1723ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld)
1724{
1725 struct ciss_request *cr;
1726 struct ciss_command *cc;
1727 struct ciss_bmic_cdb *cbc;
1728 int error, command_status;
1729
1730 /*
1731 * Build a CISS BMIC command to get the logical drive status.
1732 */
1733 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS,
1734 (void **)&ld->cl_lstatus,
1735 sizeof(*ld->cl_lstatus))) != 0)
1736 goto out;
1737 cc = CISS_FIND_COMMAND(cr);
1738 cc->header.address = *ld->cl_controller; /* target controller */
1739 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1740 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1741
1742 /*
1743 * Submit the request and wait for it to complete.
1744 */
1745 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1746 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error);
1747 goto out;
1748 }
1749
1750 /*
1751 * Check response.
1752 */
1753 ciss_report_request(cr, &command_status, NULL);
1754 switch(command_status) {
1755 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1756 break;
1757 case CISS_CMD_STATUS_DATA_UNDERRUN:
1758 case CISS_CMD_STATUS_DATA_OVERRUN:
1759 ciss_printf(sc, "data over/underrun reading logical drive status\n");
1760 default:
1761 ciss_printf(sc, "error reading logical drive status (%s)\n",
1762 ciss_name_command_status(command_status));
1763 error = EIO;
1764 goto out;
1765 }
1766
1767 /*
1768 * Set the drive's summary status based on the returned status.
1769 *
1770 * XXX testing shows that a failed JBOD drive comes back at next
1771 * boot in "queued for expansion" mode. WTF?
1772 */
1773 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status);
1774
1775out:
1776 if (cr != NULL)
1777 ciss_release_request(cr);
1778 return(error);
1779}
1780
1781/************************************************************************
1782 * Notify the adapter of a config update.
1783 */
1784static int
1785ciss_update_config(struct ciss_softc *sc)
1786{
1787 int i;
1788
1789 debug_called(1);
1790
1791 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE);
1792 for (i = 0; i < 1000; i++) {
1793 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) &
1794 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) {
1795 return(0);
1796 }
1797 DELAY(1000);
1798 }
1799 return(1);
1800}
1801
1802/************************************************************************
1803 * Accept new media into a logical drive.
1804 *
1805 * XXX The drive has previously been offline; it would be good if we
1806 * could make sure it's not open right now.
1807 */
1808static int
1809ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld)
1810{
1811 struct ciss_request *cr;
1812 struct ciss_command *cc;
1813 struct ciss_bmic_cdb *cbc;
1814 int command_status;
1815 int error = 0, ldrive;
1816
1817 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1818
1819 debug(0, "bringing logical drive %d back online");
1820
1821 /*
1822 * Build a CISS BMIC command to bring the drive back online.
1823 */
1824 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA,
1825 NULL, 0)) != 0)
1826 goto out;
1827 cc = CISS_FIND_COMMAND(cr);
1828 cc->header.address = *ld->cl_controller; /* target controller */
1829 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1830 cbc->log_drive = ldrive;
1831
1832 /*
1833 * Submit the request and wait for it to complete.
1834 */
1835 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1836 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error);
1837 goto out;
1838 }
1839
1840 /*
1841 * Check response.
1842 */
1843 ciss_report_request(cr, &command_status, NULL);
1844 switch(command_status) {
1845 case CISS_CMD_STATUS_SUCCESS: /* all OK */
1846 /* we should get a logical drive status changed event here */
1847 break;
1848 default:
1849 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n",
1850 ciss_name_command_status(command_status));
1851 break;
1852 }
1853
1854out:
1855 if (cr != NULL)
1856 ciss_release_request(cr);
1857 return(error);
1858}
1859
1860/************************************************************************
1861 * Release adapter resources.
1862 */
1863static void
1864ciss_free(struct ciss_softc *sc)
1865{
1866 struct ciss_request *cr;
1867 int i, j;
1868
1869 debug_called(1);
1870
1871 /* we're going away */
1872 sc->ciss_flags |= CISS_FLAG_ABORTING;
1873
1874 /* terminate the periodic heartbeat routine */
1875 callout_stop(&sc->ciss_periodic);
1876
1877 /* cancel the Event Notify chain */
1878 ciss_notify_abort(sc);
1879
1880 ciss_kill_notify_thread(sc);
1881
1882 /* disconnect from CAM */
1883 if (sc->ciss_cam_sim) {
1884 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1885 if (sc->ciss_cam_sim[i]) {
1886 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1887 cam_sim_free(sc->ciss_cam_sim[i], 0);
1888 }
1889 }
1890 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
1891 CISS_PHYSICAL_BASE; i++) {
1892 if (sc->ciss_cam_sim[i]) {
1893 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1894 cam_sim_free(sc->ciss_cam_sim[i], 0);
1895 }
1896 }
1897 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS);
1898 }
1899 if (sc->ciss_cam_devq)
1900 cam_simq_free(sc->ciss_cam_devq);
1901
1902 /* remove the control device */
1903 mtx_unlock(&sc->ciss_mtx);
1904 if (sc->ciss_dev_t != NULL)
1905 destroy_dev(sc->ciss_dev_t);
1906
1907 /* Final cleanup of the callout. */
1908 callout_drain(&sc->ciss_periodic);
1909 mtx_destroy(&sc->ciss_mtx);
1910
1911 /* free the controller data */
1912 if (sc->ciss_id != NULL)
1913 free(sc->ciss_id, CISS_MALLOC_CLASS);
1914
1915 /* release I/O resources */
1916 if (sc->ciss_regs_resource != NULL)
1917 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1918 sc->ciss_regs_rid, sc->ciss_regs_resource);
1919 if (sc->ciss_cfg_resource != NULL)
1920 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1921 sc->ciss_cfg_rid, sc->ciss_cfg_resource);
1922 if (sc->ciss_intr != NULL)
1923 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr);
1924 if (sc->ciss_irq_resource != NULL)
1925 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ,
1926 sc->ciss_irq_rid[0], sc->ciss_irq_resource);
1927 if (sc->ciss_msi)
1928 pci_release_msi(sc->ciss_dev);
1929
1930 while ((cr = ciss_dequeue_free(sc)) != NULL)
1931 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap);
1932 if (sc->ciss_buffer_dmat)
1933 bus_dma_tag_destroy(sc->ciss_buffer_dmat);
1934
1935 /* destroy command memory and DMA tag */
1936 if (sc->ciss_command != NULL) {
1937 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map);
1938 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map);
1939 }
1940 if (sc->ciss_command_dmat)
1941 bus_dma_tag_destroy(sc->ciss_command_dmat);
1942
1943 if (sc->ciss_reply) {
1944 bus_dmamap_unload(sc->ciss_reply_dmat, sc->ciss_reply_map);
1945 bus_dmamem_free(sc->ciss_reply_dmat, sc->ciss_reply, sc->ciss_reply_map);
1946 }
1947 if (sc->ciss_reply_dmat)
1948 bus_dma_tag_destroy(sc->ciss_reply_dmat);
1949
1950 /* destroy DMA tags */
1951 if (sc->ciss_parent_dmat)
1952 bus_dma_tag_destroy(sc->ciss_parent_dmat);
1953 if (sc->ciss_logical) {
1954 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1955 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
1956 if (sc->ciss_logical[i][j].cl_ldrive)
1957 free(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS);
1958 if (sc->ciss_logical[i][j].cl_lstatus)
1959 free(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS);
1960 }
1961 free(sc->ciss_logical[i], CISS_MALLOC_CLASS);
1962 }
1963 free(sc->ciss_logical, CISS_MALLOC_CLASS);
1964 }
1965
1966 if (sc->ciss_physical) {
1967 for (i = 0; i < sc->ciss_max_physical_bus; i++)
1968 free(sc->ciss_physical[i], CISS_MALLOC_CLASS);
1969 free(sc->ciss_physical, CISS_MALLOC_CLASS);
1970 }
1971
1972 if (sc->ciss_controllers)
1973 free(sc->ciss_controllers, CISS_MALLOC_CLASS);
1974
1975}
1976
1977/************************************************************************
1978 * Give a command to the adapter.
1979 *
1980 * Note that this uses the simple transport layer directly. If we
1981 * want to add support for other layers, we'll need a switch of some
1982 * sort.
1983 *
1984 * Note that the simple transport layer has no way of refusing a
1985 * command; we only have as many request structures as the adapter
1986 * supports commands, so we don't have to check (this presumes that
1987 * the adapter can handle commands as fast as we throw them at it).
1988 */
1989static int
1990ciss_start(struct ciss_request *cr)
1991{
1992 struct ciss_command *cc; /* XXX debugging only */
1993 int error;
1994
1995 cc = CISS_FIND_COMMAND(cr);
1996 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag);
1997
1998 /*
1999 * Map the request's data.
2000 */
2001 if ((error = ciss_map_request(cr)))
2002 return(error);
2003
2004#if 0
2005 ciss_print_request(cr);
2006#endif
2007
2008 return(0);
2009}
2010
2011/************************************************************************
2012 * Fetch completed request(s) from the adapter, queue them for
2013 * completion handling.
2014 *
2015 * Note that this uses the simple transport layer directly. If we
2016 * want to add support for other layers, we'll need a switch of some
2017 * sort.
2018 *
2019 * Note that the simple transport mechanism does not require any
2020 * reentrancy protection; the OPQ read is atomic. If there is a
2021 * chance of a race with something else that might move the request
2022 * off the busy list, then we will have to lock against that
2023 * (eg. timeouts, etc.)
2024 */
2025static void
2026ciss_done(struct ciss_softc *sc, cr_qhead_t *qh)
2027{
2028 struct ciss_request *cr;
2029 struct ciss_command *cc;
2030 u_int32_t tag, index;
2031
2032 debug_called(3);
2033
2034 /*
2035 * Loop quickly taking requests from the adapter and moving them
2036 * to the completed queue.
2037 */
2038 for (;;) {
2039
2040 tag = CISS_TL_SIMPLE_FETCH_CMD(sc);
2041 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY)
2042 break;
2043 index = tag >> 2;
2044 debug(2, "completed command %d%s", index,
2045 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2046 if (index >= sc->ciss_max_requests) {
2047 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2048 continue;
2049 }
2050 cr = &(sc->ciss_request[index]);
2051 cc = CISS_FIND_COMMAND(cr);
2052 cc->header.host_tag = tag; /* not updated by adapter */
2053 ciss_enqueue_complete(cr, qh);
2054 }
2055
2056}
2057
2058static void
2059ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh)
2060{
2061 struct ciss_request *cr;
2062 struct ciss_command *cc;
2063 u_int32_t tag, index;
2064
2065 debug_called(3);
2066
2067 /*
2068 * Loop quickly taking requests from the adapter and moving them
2069 * to the completed queue.
2070 */
2071 for (;;) {
2072 tag = sc->ciss_reply[sc->ciss_rqidx];
2073 if ((tag & CISS_CYCLE_MASK) != sc->ciss_cycle)
2074 break;
2075 index = tag >> 2;
2076 debug(2, "completed command %d%s\n", index,
2077 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2078 if (index < sc->ciss_max_requests) {
2079 cr = &(sc->ciss_request[index]);
2080 cc = CISS_FIND_COMMAND(cr);
2081 cc->header.host_tag = tag; /* not updated by adapter */
2082 ciss_enqueue_complete(cr, qh);
2083 } else {
2084 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2085 }
2086 if (++sc->ciss_rqidx == sc->ciss_max_requests) {
2087 sc->ciss_rqidx = 0;
2088 sc->ciss_cycle ^= 1;
2089 }
2090 }
2091
2092}
2093
2094/************************************************************************
2095 * Take an interrupt from the adapter.
2096 */
2097static void
2098ciss_intr(void *arg)
2099{
2100 cr_qhead_t qh;
2101 struct ciss_softc *sc = (struct ciss_softc *)arg;
2102
2103 /*
2104 * The only interrupt we recognise indicates that there are
2105 * entries in the outbound post queue.
2106 */
2107 STAILQ_INIT(&qh);
2108 ciss_done(sc, &qh);
2109 mtx_lock(&sc->ciss_mtx);
2110 ciss_complete(sc, &qh);
2111 mtx_unlock(&sc->ciss_mtx);
2112}
2113
2114static void
2115ciss_perf_intr(void *arg)
2116{
2117 struct ciss_softc *sc = (struct ciss_softc *)arg;
2118
2119 /* Clear the interrupt and flush the bridges. Docs say that the flush
2120 * needs to be done twice, which doesn't seem right.
2121 */
2122 CISS_TL_PERF_CLEAR_INT(sc);
2123 CISS_TL_PERF_FLUSH_INT(sc);
2124
2125 ciss_perf_msi_intr(sc);
2126}
2127
2128static void
2129ciss_perf_msi_intr(void *arg)
2130{
2131 cr_qhead_t qh;
2132 struct ciss_softc *sc = (struct ciss_softc *)arg;
2133
2134 STAILQ_INIT(&qh);
2135 ciss_perf_done(sc, &qh);
2136 mtx_lock(&sc->ciss_mtx);
2137 ciss_complete(sc, &qh);
2138 mtx_unlock(&sc->ciss_mtx);
2139}
2140
2141
2142/************************************************************************
2143 * Process completed requests.
2144 *
2145 * Requests can be completed in three fashions:
2146 *
2147 * - by invoking a callback function (cr_complete is non-null)
2148 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set)
2149 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context
2150 */
2151static void
2152ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh)
2153{
2154 struct ciss_request *cr;
2155
2156 debug_called(2);
2157
2158 /*
2159 * Loop taking requests off the completed queue and performing
2160 * completion processing on them.
2161 */
2162 for (;;) {
2163 if ((cr = ciss_dequeue_complete(sc, qh)) == NULL)
2164 break;
2165 ciss_unmap_request(cr);
2166
2167 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
2168 ciss_printf(sc, "WARNING: completing non-busy request\n");
2169 cr->cr_flags &= ~CISS_REQ_BUSY;
2170
2171 /*
2172 * If the request has a callback, invoke it.
2173 */
2174 if (cr->cr_complete != NULL) {
2175 cr->cr_complete(cr);
2176 continue;
2177 }
2178
2179 /*
2180 * If someone is sleeping on this request, wake them up.
2181 */
2182 if (cr->cr_flags & CISS_REQ_SLEEP) {
2183 cr->cr_flags &= ~CISS_REQ_SLEEP;
2184 wakeup(cr);
2185 continue;
2186 }
2187
2188 /*
2189 * If someone is polling this request for completion, signal.
2190 */
2191 if (cr->cr_flags & CISS_REQ_POLL) {
2192 cr->cr_flags &= ~CISS_REQ_POLL;
2193 continue;
2194 }
2195
2196 /*
2197 * Give up and throw the request back on the free queue. This
2198 * should never happen; resources will probably be lost.
2199 */
2200 ciss_printf(sc, "WARNING: completed command with no submitter\n");
2201 ciss_enqueue_free(cr);
2202 }
2203}
2204
2205/************************************************************************
2206 * Report on the completion status of a request, and pass back SCSI
2207 * and command status values.
2208 */
2209static int
2210_ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func)
2211{
2212 struct ciss_command *cc;
2213 struct ciss_error_info *ce;
2214
2215 debug_called(2);
2216
2217 cc = CISS_FIND_COMMAND(cr);
2218 ce = (struct ciss_error_info *)&(cc->sg[0]);
2219
2220 /*
2221 * We don't consider data under/overrun an error for the Report
2222 * Logical/Physical LUNs commands.
2223 */
2224 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) &&
2225 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) ||
2226 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) &&
2227 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) ||
2228 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) ||
2229 (cc->cdb.cdb[0] == INQUIRY))) {
2230 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR;
2231 debug(2, "ignoring irrelevant under/overrun error");
2232 }
2233
2234 /*
2235 * Check the command's error bit, if clear, there's no status and
2236 * everything is OK.
2237 */
2238 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) {
2239 if (scsi_status != NULL)
2240 *scsi_status = SCSI_STATUS_OK;
2241 if (command_status != NULL)
2242 *command_status = CISS_CMD_STATUS_SUCCESS;
2243 return(0);
2244 } else {
2245 if (command_status != NULL)
2246 *command_status = ce->command_status;
2247 if (scsi_status != NULL) {
2248 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) {
2249 *scsi_status = ce->scsi_status;
2250 } else {
2251 *scsi_status = -1;
2252 }
2253 }
2254 if (bootverbose)
2255 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n",
2256 ce->command_status, ciss_name_command_status(ce->command_status),
2257 ce->scsi_status);
2258 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) {
2259 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x, function %s\n",
2260 ce->additional_error_info.invalid_command.offense_size,
2261 ce->additional_error_info.invalid_command.offense_offset,
2262 ce->additional_error_info.invalid_command.offense_value,
2263 func);
2264 }
2265 }
2266#if 0
2267 ciss_print_request(cr);
2268#endif
2269 return(1);
2270}
2271
2272/************************************************************************
2273 * Issue a request and don't return until it's completed.
2274 *
2275 * Depending on adapter status, we may poll or sleep waiting for
2276 * completion.
2277 */
2278static int
2279ciss_synch_request(struct ciss_request *cr, int timeout)
2280{
2281 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) {
2282 return(ciss_wait_request(cr, timeout));
2283 } else {
2284 return(ciss_poll_request(cr, timeout));
2285 }
2286}
2287
2288/************************************************************************
2289 * Issue a request and poll for completion.
2290 *
2291 * Timeout in milliseconds.
2292 */
2293static int
2294ciss_poll_request(struct ciss_request *cr, int timeout)
2295{
2296 cr_qhead_t qh;
2297 struct ciss_softc *sc;
2298 int error;
2299
2300 debug_called(2);
2301
2302 STAILQ_INIT(&qh);
2303 sc = cr->cr_sc;
2304 cr->cr_flags |= CISS_REQ_POLL;
2305 if ((error = ciss_start(cr)) != 0)
2306 return(error);
2307
2308 do {
2309 if (sc->ciss_perf)
2310 ciss_perf_done(sc, &qh);
2311 else
2312 ciss_done(sc, &qh);
2313 ciss_complete(sc, &qh);
2314 if (!(cr->cr_flags & CISS_REQ_POLL))
2315 return(0);
2316 DELAY(1000);
2317 } while (timeout-- >= 0);
2318 return(EWOULDBLOCK);
2319}
2320
2321/************************************************************************
2322 * Issue a request and sleep waiting for completion.
2323 *
2324 * Timeout in milliseconds. Note that a spurious wakeup will reset
2325 * the timeout.
2326 */
2327static int
2328ciss_wait_request(struct ciss_request *cr, int timeout)
2329{
2330 int error;
2331
2332 debug_called(2);
2333
2334 cr->cr_flags |= CISS_REQ_SLEEP;
2335 if ((error = ciss_start(cr)) != 0)
2336 return(error);
2337
2338 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
2339 error = msleep(cr, &cr->cr_sc->ciss_mtx, PRIBIO, "cissREQ", (timeout * hz) / 1000);
2340 }
2341 return(error);
2342}
2343
2344#if 0
2345/************************************************************************
2346 * Abort a request. Note that a potential exists here to race the
2347 * request being completed; the caller must deal with this.
2348 */
2349static int
2350ciss_abort_request(struct ciss_request *ar)
2351{
2352 struct ciss_request *cr;
2353 struct ciss_command *cc;
2354 struct ciss_message_cdb *cmc;
2355 int error;
2356
2357 debug_called(1);
2358
2359 /* get a request */
2360 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0)
2361 return(error);
2362
2363 /* build the abort command */
2364 cc = CISS_FIND_COMMAND(cr);
2365 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */
2366 cc->header.address.physical.target = 0;
2367 cc->header.address.physical.bus = 0;
2368 cc->cdb.cdb_length = sizeof(*cmc);
2369 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
2370 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2371 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
2372 cc->cdb.timeout = 30;
2373
2374 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]);
2375 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT;
2376 cmc->type = CISS_MESSAGE_ABORT_TASK;
2377 cmc->abort_tag = ar->cr_tag; /* endianness?? */
2378
2379 /*
2380 * Send the request and wait for a response. If we believe we
2381 * aborted the request OK, clear the flag that indicates it's
2382 * running.
2383 */
2384 error = ciss_synch_request(cr, 35 * 1000);
2385 if (!error)
2386 error = ciss_report_request(cr, NULL, NULL);
2387 ciss_release_request(cr);
2388
2389 return(error);
2390}
2391#endif
2392
2393
2394/************************************************************************
2395 * Fetch and initialise a request
2396 */
2397static int
2398ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp)
2399{
2400 struct ciss_request *cr;
2401
2402 debug_called(2);
2403
2404 /*
2405 * Get a request and clean it up.
2406 */
2407 if ((cr = ciss_dequeue_free(sc)) == NULL)
2408 return(ENOMEM);
2409
2410 cr->cr_data = NULL;
2411 cr->cr_flags = 0;
2412 cr->cr_complete = NULL;
2413 cr->cr_private = NULL;
2414 cr->cr_sg_tag = CISS_SG_MAX; /* Backstop to prevent accidents */
2415
2416 ciss_preen_command(cr);
2417 *crp = cr;
2418 return(0);
2419}
2420
2421static void
2422ciss_preen_command(struct ciss_request *cr)
2423{
2424 struct ciss_command *cc;
2425 u_int32_t cmdphys;
2426
2427 /*
2428 * Clean up the command structure.
2429 *
2430 * Note that we set up the error_info structure here, since the
2431 * length can be overwritten by any command.
2432 */
2433 cc = CISS_FIND_COMMAND(cr);
2434 cc->header.sg_in_list = 0; /* kinda inefficient this way */
2435 cc->header.sg_total = 0;
2436 cc->header.host_tag = cr->cr_tag << 2;
2437 cc->header.host_tag_zeroes = 0;
2438 cmdphys = CISS_FIND_COMMANDPHYS(cr);
2439 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command);
2440 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command);
2441}
2442
2443/************************************************************************
2444 * Release a request to the free list.
2445 */
2446static void
2447ciss_release_request(struct ciss_request *cr)
2448{
2449 struct ciss_softc *sc;
2450
2451 debug_called(2);
2452
2453 sc = cr->cr_sc;
2454
2455 /* release the request to the free queue */
2456 ciss_requeue_free(cr);
2457}
2458
2459/************************************************************************
2460 * Allocate a request that will be used to send a BMIC command. Do some
2461 * of the common setup here to avoid duplicating it everywhere else.
2462 */
2463static int
2464ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
2465 int opcode, void **bufp, size_t bufsize)
2466{
2467 struct ciss_request *cr;
2468 struct ciss_command *cc;
2469 struct ciss_bmic_cdb *cbc;
2470 void *buf;
2471 int error;
2472 int dataout;
2473
2474 debug_called(2);
2475
2476 cr = NULL;
2477 buf = NULL;
2478
2479 /*
2480 * Get a request.
2481 */
2482 if ((error = ciss_get_request(sc, &cr)) != 0)
2483 goto out;
2484
2485 /*
2486 * Allocate data storage if requested, determine the data direction.
2487 */
2488 dataout = 0;
2489 if ((bufsize > 0) && (bufp != NULL)) {
2490 if (*bufp == NULL) {
2491 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
2492 error = ENOMEM;
2493 goto out;
2494 }
2495 } else {
2496 buf = *bufp;
2497 dataout = 1; /* we are given a buffer, so we are writing */
2498 }
2499 }
2500
2501 /*
2502 * Build a CISS BMIC command to get the logical drive ID.
2503 */
2504 cr->cr_data = buf;
2505 cr->cr_length = bufsize;
2506 if (!dataout)
2507 cr->cr_flags = CISS_REQ_DATAIN;
2508
2509 cc = CISS_FIND_COMMAND(cr);
2510 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
2511 cc->header.address.physical.bus = 0;
2512 cc->header.address.physical.target = 0;
2513 cc->cdb.cdb_length = sizeof(*cbc);
2514 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2515 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2516 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ;
2517 cc->cdb.timeout = 0;
2518
2519 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
2520 bzero(cbc, sizeof(*cbc));
2521 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ;
2522 cbc->bmic_opcode = opcode;
2523 cbc->size = htons((u_int16_t)bufsize);
2524
2525out:
2526 if (error) {
2527 if (cr != NULL)
2528 ciss_release_request(cr);
2529 } else {
2530 *crp = cr;
2531 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
2532 *bufp = buf;
2533 }
2534 return(error);
2535}
2536
2537/************************************************************************
2538 * Handle a command passed in from userspace.
2539 */
2540static int
2541ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc)
2542{
2543 struct ciss_request *cr;
2544 struct ciss_command *cc;
2545 struct ciss_error_info *ce;
2546 int error = 0;
2547
2548 debug_called(1);
2549
2550 cr = NULL;
2551
2552 /*
2553 * Get a request.
2554 */
2555 while (ciss_get_request(sc, &cr) != 0)
2556 msleep(sc, &sc->ciss_mtx, PPAUSE, "cissREQ", hz);
2557 cc = CISS_FIND_COMMAND(cr);
2558
2559 /*
2560 * Allocate an in-kernel databuffer if required, copy in user data.
2561 */
2562 cr->cr_length = ioc->buf_size;
2563 if (ioc->buf_size > 0) {
2564 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
2565 error = ENOMEM;
2566 goto out;
2567 }
2568 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) {
2569 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2570 goto out;
2571 }
2572 }
2573
2574 /*
2575 * Build the request based on the user command.
2576 */
2577 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address));
2578 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb));
2579
2580 /* XXX anything else to populate here? */
2581
2582 /*
2583 * Run the command.
2584 */
2585 if ((error = ciss_synch_request(cr, 60 * 1000))) {
2586 debug(0, "request failed - %d", error);
2587 goto out;
2588 }
2589
2590 /*
2591 * Check to see if the command succeeded.
2592 */
2593 ce = (struct ciss_error_info *)&(cc->sg[0]);
2594 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0)
2595 bzero(ce, sizeof(*ce));
2596
2597 /*
2598 * Copy the results back to the user.
2599 */
2600 bcopy(ce, &ioc->error_info, sizeof(*ce));
2601 if ((ioc->buf_size > 0) &&
2602 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) {
2603 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2604 goto out;
2605 }
2606
2607 /* done OK */
2608 error = 0;
2609
2610out:
2611 if ((cr != NULL) && (cr->cr_data != NULL))
2612 free(cr->cr_data, CISS_MALLOC_CLASS);
2613 if (cr != NULL)
2614 ciss_release_request(cr);
2615 return(error);
2616}
2617
2618/************************************************************************
2619 * Map a request into bus-visible space, initialise the scatter/gather
2620 * list.
2621 */
2622static int
2623ciss_map_request(struct ciss_request *cr)
2624{
2625 struct ciss_softc *sc;
2626 int error = 0;
2627
2628 debug_called(2);
2629
2630 sc = cr->cr_sc;
2631
2632 /* check that mapping is necessary */
2633 if (cr->cr_flags & CISS_REQ_MAPPED)
2634 return(0);
2635
2636 cr->cr_flags |= CISS_REQ_MAPPED;
2637
2638 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2639 BUS_DMASYNC_PREWRITE);
2640
2641 if (cr->cr_data != NULL) {
2642 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap,
2643 cr->cr_data, cr->cr_length,
2644 ciss_request_map_helper, cr, 0);
2645 if (error != 0)
2646 return (error);
2647 } else {
2648 /*
2649 * Post the command to the adapter.
2650 */
2651 cr->cr_sg_tag = CISS_SG_NONE;
2652 cr->cr_flags |= CISS_REQ_BUSY;
2653 if (sc->ciss_perf)
2654 CISS_TL_PERF_POST_CMD(sc, cr);
2655 else
2656 CISS_TL_SIMPLE_POST_CMD(sc, CISS_FIND_COMMANDPHYS(cr));
2657 }
2658
2659 return(0);
2660}
2661
2662static void
2663ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2664{
2665 struct ciss_command *cc;
2666 struct ciss_request *cr;
2667 struct ciss_softc *sc;
2668 int i;
2669
2670 debug_called(2);
2671
2672 cr = (struct ciss_request *)arg;
2673 sc = cr->cr_sc;
2674 cc = CISS_FIND_COMMAND(cr);
2675
2676 for (i = 0; i < nseg; i++) {
2677 cc->sg[i].address = segs[i].ds_addr;
2678 cc->sg[i].length = segs[i].ds_len;
2679 cc->sg[i].extension = 0;
2680 }
2681 /* we leave the s/g table entirely within the command */
2682 cc->header.sg_in_list = nseg;
2683 cc->header.sg_total = nseg;
2684
2685 if (cr->cr_flags & CISS_REQ_DATAIN)
2686 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD);
2687 if (cr->cr_flags & CISS_REQ_DATAOUT)
2688 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE);
2689
2690 if (nseg == 1)
2691 cr->cr_sg_tag = CISS_SG_NONE;
2692 else if (nseg == 1)
2693 cr->cr_sg_tag = CISS_SG_1;
2694 else if (nseg == 2)
2695 cr->cr_sg_tag = CISS_SG_2;
2696 else if (nseg <= 4)
2697 cr->cr_sg_tag = CISS_SG_4;
2698 else if (nseg <= 8)
2699 cr->cr_sg_tag = CISS_SG_8;
2700 else if (nseg <= 16)
2701 cr->cr_sg_tag = CISS_SG_16;
2702 else if (nseg <= 32)
2703 cr->cr_sg_tag = CISS_SG_32;
2704 else
2705 cr->cr_sg_tag = CISS_SG_MAX;
2706
2707 /*
2708 * Post the command to the adapter.
2709 */
2710 cr->cr_flags |= CISS_REQ_BUSY;
2711 if (sc->ciss_perf)
2712 CISS_TL_PERF_POST_CMD(sc, cr);
2713 else
2714 CISS_TL_SIMPLE_POST_CMD(sc, CISS_FIND_COMMANDPHYS(cr));
2715}
2716
2717/************************************************************************
2718 * Unmap a request from bus-visible space.
2719 */
2720static void
2721ciss_unmap_request(struct ciss_request *cr)
2722{
2723 struct ciss_softc *sc;
2724
2725 debug_called(2);
2726
2727 sc = cr->cr_sc;
2728
2729 /* check that unmapping is necessary */
2730 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0)
2731 return;
2732
2733 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2734 BUS_DMASYNC_POSTWRITE);
2735
2736 if (cr->cr_data == NULL)
2737 goto out;
2738
2739 if (cr->cr_flags & CISS_REQ_DATAIN)
2740 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD);
2741 if (cr->cr_flags & CISS_REQ_DATAOUT)
2742 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE);
2743
2744 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap);
2745out:
2746 cr->cr_flags &= ~CISS_REQ_MAPPED;
2747}
2748
2749/************************************************************************
2750 * Attach the driver to CAM.
2751 *
2752 * We put all the logical drives on a single SCSI bus.
2753 */
2754static int
2755ciss_cam_init(struct ciss_softc *sc)
2756{
2757 int i, maxbus;
2758
2759 debug_called(1);
2760
2761 /*
2762 * Allocate a devq. We can reuse this for the masked physical
2763 * devices if we decide to export these as well.
2764 */
2765 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests)) == NULL) {
2766 ciss_printf(sc, "can't allocate CAM SIM queue\n");
2767 return(ENOMEM);
2768 }
2769
2770 /*
2771 * Create a SIM.
2772 *
2773 * This naturally wastes a bit of memory. The alternative is to allocate
2774 * and register each bus as it is found, and then track them on a linked
2775 * list. Unfortunately, the driver has a few places where it needs to
2776 * look up the SIM based solely on bus number, and it's unclear whether
2777 * a list traversal would work for these situations.
2778 */
2779 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus +
2780 CISS_PHYSICAL_BASE);
2781 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*),
2782 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
2783 if (sc->ciss_cam_sim == NULL) {
2784 ciss_printf(sc, "can't allocate memory for controller SIM\n");
2785 return(ENOMEM);
2786 }
2787
2788 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2789 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2790 "ciss", sc,
2791 device_get_unit(sc->ciss_dev),
2792 &sc->ciss_mtx,
2793 2,
2794 sc->ciss_max_requests - 2,
2795 sc->ciss_cam_devq)) == NULL) {
2796 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2797 return(ENOMEM);
2798 }
2799
2800 /*
2801 * Register bus with this SIM.
2802 */
2803 mtx_lock(&sc->ciss_mtx);
2804 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) {
2805 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2806 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2807 mtx_unlock(&sc->ciss_mtx);
2808 return (ENXIO);
2809 }
2810 }
2811 mtx_unlock(&sc->ciss_mtx);
2812 }
2813
2814 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2815 CISS_PHYSICAL_BASE; i++) {
2816 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2817 "ciss", sc,
2818 device_get_unit(sc->ciss_dev),
2819 &sc->ciss_mtx, 1,
2820 sc->ciss_max_requests - 2,
2821 sc->ciss_cam_devq)) == NULL) {
2822 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2823 return (ENOMEM);
2824 }
2825
2826 mtx_lock(&sc->ciss_mtx);
2827 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2828 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2829 mtx_unlock(&sc->ciss_mtx);
2830 return (ENXIO);
2831 }
2832 mtx_unlock(&sc->ciss_mtx);
2833 }
2834
2835 /*
2836 * Initiate a rescan of the bus.
2837 */
2838 mtx_lock(&sc->ciss_mtx);
2839 ciss_cam_rescan_all(sc);
2840 mtx_unlock(&sc->ciss_mtx);
2841
2842 return(0);
2843}
2844
2845/************************************************************************
2846 * Initiate a rescan of the 'logical devices' SIM
2847 */
2848static void
2849ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target)
2850{
2851 struct cam_path *path;
2852 union ccb *ccb;
2853
2854 debug_called(1);
2855
2856 if ((ccb = malloc(sizeof(union ccb), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
2857 ciss_printf(sc, "rescan failed (can't allocate CCB)\n");
2858 return;
2859 }
2860
2861 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sc->ciss_cam_sim[bus]),
2862 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
2863 ciss_printf(sc, "rescan failed (can't create path)\n");
2864 free(ccb, CISS_MALLOC_CLASS);
2865 return;
2866 }
2867
2868 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/);
2869 ccb->ccb_h.func_code = XPT_SCAN_BUS;
2870 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback;
2871 ccb->crcn.flags = CAM_FLAG_NONE;
2872 xpt_action(ccb);
2873
2874 /* scan is now in progress */
2875}
2876
2877static void
2878ciss_cam_rescan_all(struct ciss_softc *sc)
2879{
2880 int i;
2881
2882 /* Rescan the logical buses */
2883 for (i = 0; i < sc->ciss_max_logical_bus; i++)
2884 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
2885 /* Rescan the physical buses */
2886 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2887 CISS_PHYSICAL_BASE; i++)
2888 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
2889}
2890
2891static void
2892ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
2893{
2894 xpt_free_path(ccb->ccb_h.path);
2895 free(ccb, CISS_MALLOC_CLASS);
2896}
2897
2898/************************************************************************
2899 * Handle requests coming from CAM
2900 */
2901static void
2902ciss_cam_action(struct cam_sim *sim, union ccb *ccb)
2903{
2904 struct ciss_softc *sc;
2905 struct ccb_scsiio *csio;
2906 int bus, target;
2907 int physical;
2908
2909 sc = cam_sim_softc(sim);
2910 bus = cam_sim_bus(sim);
2911 csio = (struct ccb_scsiio *)&ccb->csio;
2912 target = csio->ccb_h.target_id;
2913 physical = CISS_IS_PHYSICAL(bus);
2914
2915 switch (ccb->ccb_h.func_code) {
2916
2917 /* perform SCSI I/O */
2918 case XPT_SCSI_IO:
2919 if (!ciss_cam_action_io(sim, csio))
2920 return;
2921 break;
2922
2923 /* perform geometry calculations */
2924 case XPT_CALC_GEOMETRY:
2925 {
2926 struct ccb_calc_geometry *ccg = &ccb->ccg;
2927 struct ciss_ldrive *ld;
2928
2929 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2930
2931 ld = NULL;
2932 if (!physical)
2933 ld = &sc->ciss_logical[bus][target];
2934
2935 /*
2936 * Use the cached geometry settings unless the fault tolerance
2937 * is invalid.
2938 */
2939 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) {
2940 u_int32_t secs_per_cylinder;
2941
2942 ccg->heads = 255;
2943 ccg->secs_per_track = 32;
2944 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2945 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2946 } else {
2947 ccg->heads = ld->cl_geometry.heads;
2948 ccg->secs_per_track = ld->cl_geometry.sectors;
2949 ccg->cylinders = ntohs(ld->cl_geometry.cylinders);
2950 }
2951 ccb->ccb_h.status = CAM_REQ_CMP;
2952 break;
2953 }
2954
2955 /* handle path attribute inquiry */
2956 case XPT_PATH_INQ:
2957 {
2958 struct ccb_pathinq *cpi = &ccb->cpi;
2959
2960 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2961
2962 cpi->version_num = 1;
2963 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */
2964 cpi->target_sprt = 0;
2965 cpi->hba_misc = 0;
2966 cpi->max_target = CISS_MAX_LOGICAL;
2967 cpi->max_lun = 0; /* 'logical drive' channel only */
2968 cpi->initiator_id = CISS_MAX_LOGICAL;
2969 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2970 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN);
2971 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2972 cpi->unit_number = cam_sim_unit(sim);
2973 cpi->bus_id = cam_sim_bus(sim);
2974 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
2975 cpi->transport = XPORT_SPI;
2976 cpi->transport_version = 2;
2977 cpi->protocol = PROTO_SCSI;
2978 cpi->protocol_version = SCSI_REV_2;
2979 ccb->ccb_h.status = CAM_REQ_CMP;
2980 break;
2981 }
2982
2983 case XPT_GET_TRAN_SETTINGS:
2984 {
2985 struct ccb_trans_settings *cts = &ccb->cts;
2986 int bus, target;
2987 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
2988 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
2989
2990 bus = cam_sim_bus(sim);
2991 target = cts->ccb_h.target_id;
2992
2993 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
2994 /* disconnect always OK */
2995 cts->protocol = PROTO_SCSI;
2996 cts->protocol_version = SCSI_REV_2;
2997 cts->transport = XPORT_SPI;
2998 cts->transport_version = 2;
2999
3000 spi->valid = CTS_SPI_VALID_DISC;
3001 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
3002
3003 scsi->valid = CTS_SCSI_VALID_TQ;
3004 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
3005
3006 cts->ccb_h.status = CAM_REQ_CMP;
3007 break;
3008 }
3009
3010 default: /* we can't do this */
3011 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
3012 ccb->ccb_h.status = CAM_REQ_INVALID;
3013 break;
3014 }
3015
3016 xpt_done(ccb);
3017}
3018
3019/************************************************************************
3020 * Handle a CAM SCSI I/O request.
3021 */
3022static int
3023ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
3024{
3025 struct ciss_softc *sc;
3026 int bus, target;
3027 struct ciss_request *cr;
3028 struct ciss_command *cc;
3029 int error;
3030
3031 sc = cam_sim_softc(sim);
3032 bus = cam_sim_bus(sim);
3033 target = csio->ccb_h.target_id;
3034
3035 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
3036
3037 /* check that the CDB pointer is not to a physical address */
3038 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
3039 debug(3, " CDB pointer is to physical address");
3040 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3041 }
3042
3043 /* if there is data transfer, it must be to/from a virtual address */
3044 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
3045 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */
3046 debug(3, " data pointer is to physical address");
3047 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3048 }
3049 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */
3050 debug(3, " data has premature s/g setup");
3051 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3052 }
3053 }
3054
3055 /* abandon aborted ccbs or those that have failed validation */
3056 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
3057 debug(3, "abandoning CCB due to abort/validation failure");
3058 return(EINVAL);
3059 }
3060
3061 /* handle emulation of some SCSI commands ourself */
3062 if (ciss_cam_emulate(sc, csio))
3063 return(0);
3064
3065 /*
3066 * Get a request to manage this command. If we can't, return the
3067 * ccb, freeze the queue and flag so that we unfreeze it when a
3068 * request completes.
3069 */
3070 if ((error = ciss_get_request(sc, &cr)) != 0) {
3071 xpt_freeze_simq(sim, 1);
3072 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3073 return(error);
3074 }
3075
3076 /*
3077 * Build the command.
3078 */
3079 cc = CISS_FIND_COMMAND(cr);
3080 cr->cr_data = csio->data_ptr;
3081 cr->cr_length = csio->dxfer_len;
3082 cr->cr_complete = ciss_cam_complete;
3083 cr->cr_private = csio;
3084
3085 /*
3086 * Target the right logical volume.
3087 */
3088 if (CISS_IS_PHYSICAL(bus))
3089 cc->header.address =
3090 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address;
3091 else
3092 cc->header.address =
3093 sc->ciss_logical[bus][target].cl_address;
3094 cc->cdb.cdb_length = csio->cdb_len;
3095 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3096 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */
3097 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
3098 cr->cr_flags = CISS_REQ_DATAOUT;
3099 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3100 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
3101 cr->cr_flags = CISS_REQ_DATAIN;
3102 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3103 } else {
3104 cr->cr_flags = 0;
3105 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
3106 }
3107 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1;
3108 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
3109 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len);
3110 } else {
3111 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len);
3112 }
3113
3114 /*
3115 * Submit the request to the adapter.
3116 *
3117 * Note that this may fail if we're unable to map the request (and
3118 * if we ever learn a transport layer other than simple, may fail
3119 * if the adapter rejects the command).
3120 */
3121 if ((error = ciss_start(cr)) != 0) {
3122 xpt_freeze_simq(sim, 1);
3123 if (error == EINPROGRESS) {
3124 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3125 error = 0;
3126 } else {
3127 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3128 ciss_release_request(cr);
3129 }
3130 return(error);
3131 }
3132
3133 return(0);
3134}
3135
3136/************************************************************************
3137 * Emulate SCSI commands the adapter doesn't handle as we might like.
3138 */
3139static int
3140ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio)
3141{
3142 int bus, target;
3143 u_int8_t opcode;
3144
3145 target = csio->ccb_h.target_id;
3146 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3147 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3148 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0];
3149
3150 if (CISS_IS_PHYSICAL(bus)) {
3151 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) {
3152 csio->ccb_h.status = CAM_SEL_TIMEOUT;
3153 xpt_done((union ccb *)csio);
3154 return(1);
3155 } else
3156 return(0);
3157 }
3158
3159 /*
3160 * Handle requests for volumes that don't exist or are not online.
3161 * A selection timeout is slightly better than an illegal request.
3162 * Other errors might be better.
3163 */
3164 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) {
3165 csio->ccb_h.status = CAM_SEL_TIMEOUT;
3166 xpt_done((union ccb *)csio);
3167 return(1);
3168 }
3169
3170 /* if we have to fake Synchronise Cache */
3171 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) {
3172 /*
3173 * If this is a Synchronise Cache command, typically issued when
3174 * a device is closed, flush the adapter and complete now.
3175 */
3176 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3177 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) {
3178 ciss_flush_adapter(sc);
3179 csio->ccb_h.status = CAM_REQ_CMP;
3180 xpt_done((union ccb *)csio);
3181 return(1);
3182 }
3183 }
3184
3185 return(0);
3186}
3187
3188/************************************************************************
3189 * Check for possibly-completed commands.
3190 */
3191static void
3192ciss_cam_poll(struct cam_sim *sim)
3193{
3194 cr_qhead_t qh;
3195 struct ciss_softc *sc = cam_sim_softc(sim);
3196
3197 debug_called(2);
3198
3199 STAILQ_INIT(&qh);
3200 if (sc->ciss_perf)
3201 ciss_perf_done(sc, &qh);
3202 else
3203 ciss_done(sc, &qh);
3204 ciss_complete(sc, &qh);
3205}
3206
3207/************************************************************************
3208 * Handle completion of a command - pass results back through the CCB
3209 */
3210static void
3211ciss_cam_complete(struct ciss_request *cr)
3212{
3213 struct ciss_softc *sc;
3214 struct ciss_command *cc;
3215 struct ciss_error_info *ce;
3216 struct ccb_scsiio *csio;
3217 int scsi_status;
3218 int command_status;
3219
3220 debug_called(2);
3221
3222 sc = cr->cr_sc;
3223 cc = CISS_FIND_COMMAND(cr);
3224 ce = (struct ciss_error_info *)&(cc->sg[0]);
3225 csio = (struct ccb_scsiio *)cr->cr_private;
3226
3227 /*
3228 * Extract status values from request.
3229 */
3230 ciss_report_request(cr, &command_status, &scsi_status);
3231 csio->scsi_status = scsi_status;
3232
3233 /*
3234 * Handle specific SCSI status values.
3235 */
3236 switch(scsi_status) {
3237 /* no status due to adapter error */
3238 case -1:
3239 debug(0, "adapter error");
3240 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3241 break;
3242
3243 /* no status due to command completed OK */
3244 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */
3245 debug(2, "SCSI_STATUS_OK");
3246 csio->ccb_h.status = CAM_REQ_CMP;
3247 break;
3248
3249 /* check condition, sense data included */
3250 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */
3251 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n",
3252 ce->sense_length, ce->residual_count);
3253 bzero(&csio->sense_data, SSD_FULL_SIZE);
3254 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length);
3255 csio->sense_len = ce->sense_length;
3256 csio->resid = ce->residual_count;
3257 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
3258#ifdef CISS_DEBUG
3259 {
3260 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0];
3261 debug(0, "sense key %x", sns->flags & SSD_KEY);
3262 }
3263#endif
3264 break;
3265
3266 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */
3267 debug(0, "SCSI_STATUS_BUSY");
3268 csio->ccb_h.status = CAM_SCSI_BUSY;
3269 break;
3270
3271 default:
3272 debug(0, "unknown status 0x%x", csio->scsi_status);
3273 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3274 break;
3275 }
3276
3277 /* handle post-command fixup */
3278 ciss_cam_complete_fixup(sc, csio);
3279
3280 /* tell CAM we're ready for more commands */
3281 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3282
3283 ciss_release_request(cr);
3284 xpt_done((union ccb *)csio);
3285}
3286
3287/********************************************************************************
3288 * Fix up the result of some commands here.
3289 */
3290static void
3291ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio)
3292{
3293 struct scsi_inquiry_data *inq;
3294 struct ciss_ldrive *cl;
3295 int bus, target;
3296
3297 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3298 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) {
3299
3300 inq = (struct scsi_inquiry_data *)csio->data_ptr;
3301 target = csio->ccb_h.target_id;
3302 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3303
3304 /*
3305 * Don't let hard drives be seen by the DA driver. They will still be
3306 * attached by the PASS driver.
3307 */
3308 if (CISS_IS_PHYSICAL(bus)) {
3309 if (SID_TYPE(inq) == T_DIRECT)
3310 inq->device = (inq->device & 0xe0) | T_NODEVICE;
3311 return;
3312 }
3313
3314 cl = &sc->ciss_logical[bus][target];
3315
3316 padstr(inq->vendor, "COMPAQ", 8);
3317 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8);
3318 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16);
3319 }
3320}
3321
3322
3323/********************************************************************************
3324 * Find a peripheral attached at (target)
3325 */
3326static struct cam_periph *
3327ciss_find_periph(struct ciss_softc *sc, int bus, int target)
3328{
3329 struct cam_periph *periph;
3330 struct cam_path *path;
3331 int status;
3332
3333 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]),
3334 target, 0);
3335 if (status == CAM_REQ_CMP) {
3336 periph = cam_periph_find(path, NULL);
3337 xpt_free_path(path);
3338 } else {
3339 periph = NULL;
3340 }
3341 return(periph);
3342}
3343
3344/********************************************************************************
3345 * Name the device at (target)
3346 *
3347 * XXX is this strictly correct?
3348 */
3349static int
3350ciss_name_device(struct ciss_softc *sc, int bus, int target)
3351{
3352 struct cam_periph *periph;
3353
3354 if (CISS_IS_PHYSICAL(bus))
3355 return (0);
3356 if ((periph = ciss_find_periph(sc, bus, target)) != NULL) {
3357 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d",
3358 periph->periph_name, periph->unit_number);
3359 return(0);
3360 }
3361 sc->ciss_logical[bus][target].cl_name[0] = 0;
3362 return(ENOENT);
3363}
3364
3365/************************************************************************
3366 * Periodic status monitoring.
3367 */
3368static void
3369ciss_periodic(void *arg)
3370{
3371 struct ciss_softc *sc;
3372 struct ciss_request *cr = NULL;
3373 struct ciss_command *cc = NULL;
3374 int error = 0;
3375
3376 debug_called(1);
3377
3378 sc = (struct ciss_softc *)arg;
3379
3380 /*
3381 * Check the adapter heartbeat.
3382 */
3383 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) {
3384 sc->ciss_heart_attack++;
3385 debug(0, "adapter heart attack in progress 0x%x/%d",
3386 sc->ciss_heartbeat, sc->ciss_heart_attack);
3387 if (sc->ciss_heart_attack == 3) {
3388 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n");
3389 ciss_disable_adapter(sc);
3390 return;
3391 }
3392 } else {
3393 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat;
3394 sc->ciss_heart_attack = 0;
3395 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat);
3396 }
3397
3398 /*
3399 * Send the NOP message and wait for a response.
3400 */
3401 if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) {
3402 cc = CISS_FIND_COMMAND(cr);
3403 cr->cr_complete = ciss_nop_complete;
3404 cc->cdb.cdb_length = 1;
3405 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
3406 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3407 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3408 cc->cdb.timeout = 0;
3409 cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP;
3410
3411 if ((error = ciss_start(cr)) != 0) {
3412 ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n");
3413 }
3414 }
3415
3416 /*
3417 * If the notify event request has died for some reason, or has
3418 * not started yet, restart it.
3419 */
3420 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) {
3421 debug(0, "(re)starting Event Notify chain");
3422 ciss_notify_event(sc);
3423 }
3424
3425 /*
3426 * Reschedule.
3427 */
3428 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc);
3429}
3430
3431static void
3432ciss_nop_complete(struct ciss_request *cr)
3433{
3434 struct ciss_softc *sc;
3435 static int first_time = 1;
3436
3437 sc = cr->cr_sc;
3438 if (ciss_report_request(cr, NULL, NULL) != 0) {
3439 if (first_time == 1) {
3440 first_time = 0;
3441 ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n");
3442 }
3443 }
3444
3445 ciss_release_request(cr);
3446}
3447
3448/************************************************************************
3449 * Disable the adapter.
3450 *
3451 * The all requests in completed queue is failed with hardware error.
3452 * This will cause failover in a multipath configuration.
3453 */
3454static void
3455ciss_disable_adapter(struct ciss_softc *sc)
3456{
3457 cr_qhead_t qh;
3458 struct ciss_request *cr;
3459 struct ciss_command *cc;
3460 struct ciss_error_info *ce;
3461 int i;
3462
3463 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
3464 pci_disable_busmaster(sc->ciss_dev);
3465 sc->ciss_flags &= ~CISS_FLAG_RUNNING;
3466
3467 for (i = 1; i < sc->ciss_max_requests; i++) {
3468 cr = &sc->ciss_request[i];
3469 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
3470 continue;
3471
3472 cc = CISS_FIND_COMMAND(cr);
3473 ce = (struct ciss_error_info *)&(cc->sg[0]);
3474 ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR;
3475 ciss_enqueue_complete(cr, &qh);
3476 }
3477
3478 for (;;) {
3479 if ((cr = ciss_dequeue_complete(sc, &qh)) == NULL)
3480 break;
3481
3482 /*
3483 * If the request has a callback, invoke it.
3484 */
3485 if (cr->cr_complete != NULL) {
3486 cr->cr_complete(cr);
3487 continue;
3488 }
3489
3490 /*
3491 * If someone is sleeping on this request, wake them up.
3492 */
3493 if (cr->cr_flags & CISS_REQ_SLEEP) {
3494 cr->cr_flags &= ~CISS_REQ_SLEEP;
3495 wakeup(cr);
3496 continue;
3497 }
3498 }
3499}
3500
3501/************************************************************************
3502 * Request a notification response from the adapter.
3503 *
3504 * If (cr) is NULL, this is the first request of the adapter, so
3505 * reset the adapter's message pointer and start with the oldest
3506 * message available.
3507 */
3508static void
3509ciss_notify_event(struct ciss_softc *sc)
3510{
3511 struct ciss_request *cr;
3512 struct ciss_command *cc;
3513 struct ciss_notify_cdb *cnc;
3514 int error;
3515
3516 debug_called(1);
3517
3518 cr = sc->ciss_periodic_notify;
3519
3520 /* get a request if we don't already have one */
3521 if (cr == NULL) {
3522 if ((error = ciss_get_request(sc, &cr)) != 0) {
3523 debug(0, "can't get notify event request");
3524 goto out;
3525 }
3526 sc->ciss_periodic_notify = cr;
3527 cr->cr_complete = ciss_notify_complete;
3528 debug(1, "acquired request %d", cr->cr_tag);
3529 }
3530
3531 /*
3532 * Get a databuffer if we don't already have one, note that the
3533 * adapter command wants a larger buffer than the actual
3534 * structure.
3535 */
3536 if (cr->cr_data == NULL) {
3537 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3538 debug(0, "can't get notify event request buffer");
3539 error = ENOMEM;
3540 goto out;
3541 }
3542 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3543 }
3544
3545 /* re-setup the request's command (since we never release it) XXX overkill*/
3546 ciss_preen_command(cr);
3547
3548 /* (re)build the notify event command */
3549 cc = CISS_FIND_COMMAND(cr);
3550 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3551 cc->header.address.physical.bus = 0;
3552 cc->header.address.physical.target = 0;
3553
3554 cc->cdb.cdb_length = sizeof(*cnc);
3555 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3556 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3557 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3558 cc->cdb.timeout = 0; /* no timeout, we hope */
3559
3560 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3561 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE);
3562 cnc->opcode = CISS_OPCODE_READ;
3563 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT;
3564 cnc->timeout = 0; /* no timeout, we hope */
3565 cnc->synchronous = 0;
3566 cnc->ordered = 0;
3567 cnc->seek_to_oldest = 0;
3568 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0)
3569 cnc->new_only = 1;
3570 else
3571 cnc->new_only = 0;
3572 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3573
3574 /* submit the request */
3575 error = ciss_start(cr);
3576
3577 out:
3578 if (error) {
3579 if (cr != NULL) {
3580 if (cr->cr_data != NULL)
3581 free(cr->cr_data, CISS_MALLOC_CLASS);
3582 ciss_release_request(cr);
3583 }
3584 sc->ciss_periodic_notify = NULL;
3585 debug(0, "can't submit notify event request");
3586 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3587 } else {
3588 debug(1, "notify event submitted");
3589 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK;
3590 }
3591}
3592
3593static void
3594ciss_notify_complete(struct ciss_request *cr)
3595{
3596 struct ciss_command *cc;
3597 struct ciss_notify *cn;
3598 struct ciss_softc *sc;
3599 int scsi_status;
3600 int command_status;
3601 debug_called(1);
3602
3603 cc = CISS_FIND_COMMAND(cr);
3604 cn = (struct ciss_notify *)cr->cr_data;
3605 sc = cr->cr_sc;
3606
3607 /*
3608 * Report request results, decode status.
3609 */
3610 ciss_report_request(cr, &command_status, &scsi_status);
3611
3612 /*
3613 * Abort the chain on a fatal error.
3614 *
3615 * XXX which of these are actually errors?
3616 */
3617 if ((command_status != CISS_CMD_STATUS_SUCCESS) &&
3618 (command_status != CISS_CMD_STATUS_TARGET_STATUS) &&
3619 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */
3620 ciss_printf(sc, "fatal error in Notify Event request (%s)\n",
3621 ciss_name_command_status(command_status));
3622 ciss_release_request(cr);
3623 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3624 return;
3625 }
3626
3627 /*
3628 * If the adapter gave us a text message, print it.
3629 */
3630 if (cn->message[0] != 0)
3631 ciss_printf(sc, "*** %.80s\n", cn->message);
3632
3633 debug(0, "notify event class %d subclass %d detail %d",
3634 cn->class, cn->subclass, cn->detail);
3635
3636 /*
3637 * If the response indicates that the notifier has been aborted,
3638 * release the notifier command.
3639 */
3640 if ((cn->class == CISS_NOTIFY_NOTIFIER) &&
3641 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) &&
3642 (cn->detail == 1)) {
3643 debug(0, "notifier exiting");
3644 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3645 ciss_release_request(cr);
3646 sc->ciss_periodic_notify = NULL;
3647 wakeup(&sc->ciss_periodic_notify);
3648 } else {
3649 /* Handle notify events in a kernel thread */
3650 ciss_enqueue_notify(cr);
3651 sc->ciss_periodic_notify = NULL;
3652 wakeup(&sc->ciss_periodic_notify);
3653 wakeup(&sc->ciss_notify);
3654 }
3655 /*
3656 * Send a new notify event command, if we're not aborting.
3657 */
3658 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) {
3659 ciss_notify_event(sc);
3660 }
3661}
3662
3663/************************************************************************
3664 * Abort the Notify Event chain.
3665 *
3666 * Note that we can't just abort the command in progress; we have to
3667 * explicitly issue an Abort Notify Event command in order for the
3668 * adapter to clean up correctly.
3669 *
3670 * If we are called with CISS_FLAG_ABORTING set in the adapter softc,
3671 * the chain will not restart itself.
3672 */
3673static int
3674ciss_notify_abort(struct ciss_softc *sc)
3675{
3676 struct ciss_request *cr;
3677 struct ciss_command *cc;
3678 struct ciss_notify_cdb *cnc;
3679 int error, command_status, scsi_status;
3680
3681 debug_called(1);
3682
3683 cr = NULL;
3684 error = 0;
3685
3686 /* verify that there's an outstanding command */
3687 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3688 goto out;
3689
3690 /* get a command to issue the abort with */
3691 if ((error = ciss_get_request(sc, &cr)))
3692 goto out;
3693
3694 /* get a buffer for the result */
3695 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3696 debug(0, "can't get notify event request buffer");
3697 error = ENOMEM;
3698 goto out;
3699 }
3700 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3701
3702 /* build the CDB */
3703 cc = CISS_FIND_COMMAND(cr);
3704 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3705 cc->header.address.physical.bus = 0;
3706 cc->header.address.physical.target = 0;
3707 cc->cdb.cdb_length = sizeof(*cnc);
3708 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3709 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3710 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3711 cc->cdb.timeout = 0; /* no timeout, we hope */
3712
3713 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3714 bzero(cnc, sizeof(*cnc));
3715 cnc->opcode = CISS_OPCODE_WRITE;
3716 cnc->command = CISS_COMMAND_ABORT_NOTIFY;
3717 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3718
3719 ciss_print_request(cr);
3720
3721 /*
3722 * Submit the request and wait for it to complete.
3723 */
3724 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3725 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error);
3726 goto out;
3727 }
3728
3729 /*
3730 * Check response.
3731 */
3732 ciss_report_request(cr, &command_status, &scsi_status);
3733 switch(command_status) {
3734 case CISS_CMD_STATUS_SUCCESS:
3735 break;
3736 case CISS_CMD_STATUS_INVALID_COMMAND:
3737 /*
3738 * Some older adapters don't support the CISS version of this
3739 * command. Fall back to using the BMIC version.
3740 */
3741 error = ciss_notify_abort_bmic(sc);
3742 if (error != 0)
3743 goto out;
3744 break;
3745
3746 case CISS_CMD_STATUS_TARGET_STATUS:
3747 /*
3748 * This can happen if the adapter thinks there wasn't an outstanding
3749 * Notify Event command but we did. We clean up here.
3750 */
3751 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) {
3752 if (sc->ciss_periodic_notify != NULL)
3753 ciss_release_request(sc->ciss_periodic_notify);
3754 error = 0;
3755 goto out;
3756 }
3757 /* FALLTHROUGH */
3758
3759 default:
3760 ciss_printf(sc, "Abort Notify Event command failed (%s)\n",
3761 ciss_name_command_status(command_status));
3762 error = EIO;
3763 goto out;
3764 }
3765
3766 /*
3767 * Sleep waiting for the notifier command to complete. Note
3768 * that if it doesn't, we may end up in a bad situation, since
3769 * the adapter may deliver it later. Also note that the adapter
3770 * requires the Notify Event command to be cancelled in order to
3771 * maintain internal bookkeeping.
3772 */
3773 while (sc->ciss_periodic_notify != NULL) {
3774 error = msleep(&sc->ciss_periodic_notify, &sc->ciss_mtx, PRIBIO, "cissNEA", hz * 5);
3775 if (error == EWOULDBLOCK) {
3776 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n");
3777 break;
3778 }
3779 }
3780
3781 out:
3782 /* release the cancel request */
3783 if (cr != NULL) {
3784 if (cr->cr_data != NULL)
3785 free(cr->cr_data, CISS_MALLOC_CLASS);
3786 ciss_release_request(cr);
3787 }
3788 if (error == 0)
3789 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3790 return(error);
3791}
3792
3793/************************************************************************
3794 * Abort the Notify Event chain using a BMIC command.
3795 */
3796static int
3797ciss_notify_abort_bmic(struct ciss_softc *sc)
3798{
3799 struct ciss_request *cr;
3800 int error, command_status;
3801
3802 debug_called(1);
3803
3804 cr = NULL;
3805 error = 0;
3806
3807 /* verify that there's an outstanding command */
3808 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3809 goto out;
3810
3811 /*
3812 * Build a BMIC command to cancel the Notify on Event command.
3813 *
3814 * Note that we are sending a CISS opcode here. Odd.
3815 */
3816 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY,
3817 NULL, 0)) != 0)
3818 goto out;
3819
3820 /*
3821 * Submit the request and wait for it to complete.
3822 */
3823 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3824 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error);
3825 goto out;
3826 }
3827
3828 /*
3829 * Check response.
3830 */
3831 ciss_report_request(cr, &command_status, NULL);
3832 switch(command_status) {
3833 case CISS_CMD_STATUS_SUCCESS:
3834 break;
3835 default:
3836 ciss_printf(sc, "error cancelling Notify on Event (%s)\n",
3837 ciss_name_command_status(command_status));
3838 error = EIO;
3839 goto out;
3840 }
3841
3842out:
3843 if (cr != NULL)
3844 ciss_release_request(cr);
3845 return(error);
3846}
3847
3848/************************************************************************
3849 * Handle rescanning all the logical volumes when a notify event
3850 * causes the drives to come online or offline.
3851 */
3852static void
3853ciss_notify_rescan_logical(struct ciss_softc *sc)
3854{
3855 struct ciss_lun_report *cll;
3856 struct ciss_ldrive *ld;
3857 int i, j, ndrives;
3858
3859 /*
3860 * We must rescan all logical volumes to get the right logical
3861 * drive address.
3862 */
3863 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
3864 CISS_MAX_LOGICAL);
3865 if (cll == NULL)
3866 return;
3867
3868 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
3869
3870 /*
3871 * Delete any of the drives which were destroyed by the
3872 * firmware.
3873 */
3874 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
3875 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
3876 ld = &sc->ciss_logical[i][j];
3877
3878 if (ld->cl_update == 0)
3879 continue;
3880
3881 if (ld->cl_status != CISS_LD_ONLINE) {
3882 ciss_cam_rescan_target(sc, i, j);
3883 ld->cl_update = 0;
3884 if (ld->cl_ldrive)
3885 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
3886 if (ld->cl_lstatus)
3887 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
3888
3889 ld->cl_ldrive = NULL;
3890 ld->cl_lstatus = NULL;
3891 }
3892 }
3893 }
3894
3895 /*
3896 * Scan for new drives.
3897 */
3898 for (i = 0; i < ndrives; i++) {
3899 int bus, target;
3900
3901 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
3902 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
3903 ld = &sc->ciss_logical[bus][target];
3904
3905 if (ld->cl_update == 0)
3906 continue;
3907
3908 ld->cl_update = 0;
3909 ld->cl_address = cll->lun[i];
3910 ld->cl_controller = &sc->ciss_controllers[bus];
3911 if (ciss_identify_logical(sc, ld) == 0) {
3912 ciss_cam_rescan_target(sc, bus, target);
3913 }
3914 }
3915 free(cll, CISS_MALLOC_CLASS);
3916}
3917
3918/************************************************************************
3919 * Handle a notify event relating to the status of a logical drive.
3920 *
3921 * XXX need to be able to defer some of these to properly handle
3922 * calling the "ID Physical drive" command, unless the 'extended'
3923 * drive IDs are always in BIG_MAP format.
3924 */
3925static void
3926ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn)
3927{
3928 struct ciss_ldrive *ld;
3929 int ostatus, bus, target;
3930
3931 debug_called(2);
3932
3933 bus = cn->device.physical.bus;
3934 target = cn->data.logical_status.logical_drive;
3935 ld = &sc->ciss_logical[bus][target];
3936
3937 switch (cn->subclass) {
3938 case CISS_NOTIFY_LOGICAL_STATUS:
3939 switch (cn->detail) {
3940 case 0:
3941 ciss_name_device(sc, bus, target);
3942 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n",
3943 cn->data.logical_status.logical_drive, ld->cl_name,
3944 ciss_name_ldrive_status(cn->data.logical_status.previous_state),
3945 ciss_name_ldrive_status(cn->data.logical_status.new_state),
3946 cn->data.logical_status.spare_state,
3947 "\20\1configured\2rebuilding\3failed\4in use\5available\n");
3948
3949 /*
3950 * Update our idea of the drive's status.
3951 */
3952 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state);
3953 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3954 if (ld->cl_lstatus != NULL)
3955 ld->cl_lstatus->status = cn->data.logical_status.new_state;
3956
3957 /*
3958 * Have CAM rescan the drive if its status has changed.
3959 */
3960 if (ostatus != ld->cl_status) {
3961 ld->cl_update = 1;
3962 ciss_notify_rescan_logical(sc);
3963 }
3964
3965 break;
3966
3967 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */
3968 ciss_name_device(sc, bus, target);
3969 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n",
3970 cn->data.logical_status.logical_drive, ld->cl_name);
3971 ciss_accept_media(sc, ld);
3972
3973 ld->cl_update = 1;
3974 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3975 ciss_notify_rescan_logical(sc);
3976 break;
3977
3978 case 2:
3979 case 3:
3980 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n",
3981 cn->data.rebuild_aborted.logical_drive,
3982 ld->cl_name,
3983 (cn->detail == 2) ? "read" : "write");
3984 break;
3985 }
3986 break;
3987
3988 case CISS_NOTIFY_LOGICAL_ERROR:
3989 if (cn->detail == 0) {
3990 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n",
3991 cn->data.io_error.logical_drive,
3992 ld->cl_name,
3993 cn->data.io_error.failure_bus,
3994 cn->data.io_error.failure_drive);
3995 /* XXX should we take the drive down at this point, or will we be told? */
3996 }
3997 break;
3998
3999 case CISS_NOTIFY_LOGICAL_SURFACE:
4000 if (cn->detail == 0)
4001 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n",
4002 cn->data.consistency_completed.logical_drive,
4003 ld->cl_name);
4004 break;
4005 }
4006}
4007
4008/************************************************************************
4009 * Handle a notify event relating to the status of a physical drive.
4010 */
4011static void
4012ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn)
4013{
4014}
4015
4016/************************************************************************
4017 * Handle a notify event relating to the status of a physical drive.
4018 */
4019static void
4020ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn)
4021{
4022 struct ciss_lun_report *cll = NULL;
4023 int bus, target;
4024
4025 switch (cn->subclass) {
4026 case CISS_NOTIFY_HOTPLUG_PHYSICAL:
4027 case CISS_NOTIFY_HOTPLUG_NONDISK:
4028 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number);
4029 target =
4030 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number);
4031
4032 if (cn->detail == 0) {
4033 /*
4034 * Mark the device offline so that it'll start producing selection
4035 * timeouts to the upper layer.
4036 */
4037 if ((bus >= 0) && (target >= 0))
4038 sc->ciss_physical[bus][target].cp_online = 0;
4039 } else {
4040 /*
4041 * Rescan the physical lun list for new items
4042 */
4043 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
4044 CISS_MAX_PHYSICAL);
4045 if (cll == NULL) {
4046 ciss_printf(sc, "Warning, cannot get physical lun list\n");
4047 break;
4048 }
4049 ciss_filter_physical(sc, cll);
4050 }
4051 break;
4052
4053 default:
4054 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass);
4055 return;
4056 }
4057
4058 if (cll != NULL)
4059 free(cll, CISS_MALLOC_CLASS);
4060}
4061
4062/************************************************************************
4063 * Handle deferred processing of notify events. Notify events may need
4064 * sleep which is unsafe during an interrupt.
4065 */
4066static void
4067ciss_notify_thread(void *arg)
4068{
4069 struct ciss_softc *sc;
4070 struct ciss_request *cr;
4071 struct ciss_notify *cn;
4072
4073 sc = (struct ciss_softc *)arg;
4074#if __FreeBSD_version >= 500000
4075 mtx_lock(&sc->ciss_mtx);
4076#endif
4077
4078 for (;;) {
4079 if (STAILQ_EMPTY(&sc->ciss_notify) != 0 &&
4080 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) {
4081 msleep(&sc->ciss_notify, &sc->ciss_mtx, PUSER, "idle", 0);
4082 }
4083
4084 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT)
4085 break;
4086
4087 cr = ciss_dequeue_notify(sc);
4088
4089 if (cr == NULL)
4090 panic("cr null");
4091 cn = (struct ciss_notify *)cr->cr_data;
4092
4093 switch (cn->class) {
4094 case CISS_NOTIFY_HOTPLUG:
4095 ciss_notify_hotplug(sc, cn);
4096 break;
4097 case CISS_NOTIFY_LOGICAL:
4098 ciss_notify_logical(sc, cn);
4099 break;
4100 case CISS_NOTIFY_PHYSICAL:
4101 ciss_notify_physical(sc, cn);
4102 break;
4103 }
4104
4105 ciss_release_request(cr);
4106
4107 }
4108 sc->ciss_notify_thread = NULL;
4109 wakeup(&sc->ciss_notify_thread);
4110
4111#if __FreeBSD_version >= 500000
4112 mtx_unlock(&sc->ciss_mtx);
4113#endif
4114 kproc_exit(0);
4115}
4116
4117/************************************************************************
4118 * Start the notification kernel thread.
4119 */
4120static void
4121ciss_spawn_notify_thread(struct ciss_softc *sc)
4122{
4123
4124#if __FreeBSD_version > 500005
4125 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4126 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d",
4127 device_get_unit(sc->ciss_dev)))
4128#else
4129 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4130 &sc->ciss_notify_thread, "ciss_notify%d",
4131 device_get_unit(sc->ciss_dev)))
4132#endif
4133 panic("Could not create notify thread\n");
4134}
4135
4136/************************************************************************
4137 * Kill the notification kernel thread.
4138 */
4139static void
4140ciss_kill_notify_thread(struct ciss_softc *sc)
4141{
4142
4143 if (sc->ciss_notify_thread == NULL)
4144 return;
4145
4146 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT;
4147 wakeup(&sc->ciss_notify);
4148 msleep(&sc->ciss_notify_thread, &sc->ciss_mtx, PUSER, "thtrm", 0);
4149}
4150
4151/************************************************************************
4152 * Print a request.
4153 */
4154static void
4155ciss_print_request(struct ciss_request *cr)
4156{
4157 struct ciss_softc *sc;
4158 struct ciss_command *cc;
4159 int i;
4160
4161 sc = cr->cr_sc;
4162 cc = CISS_FIND_COMMAND(cr);
4163
4164 ciss_printf(sc, "REQUEST @ %p\n", cr);
4165 ciss_printf(sc, " data %p/%d tag %d flags %b\n",
4166 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags,
4167 "\20\1mapped\2sleep\3poll\4dataout\5datain\n");
4168 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n",
4169 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag);
4170 switch(cc->header.address.mode.mode) {
4171 case CISS_HDR_ADDRESS_MODE_PERIPHERAL:
4172 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL:
4173 ciss_printf(sc, " physical bus %d target %d\n",
4174 cc->header.address.physical.bus, cc->header.address.physical.target);
4175 break;
4176 case CISS_HDR_ADDRESS_MODE_LOGICAL:
4177 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun);
4178 break;
4179 }
4180 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n",
4181 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" :
4182 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" :
4183 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??",
4184 cc->cdb.cdb_length,
4185 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" :
4186 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??",
4187 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" :
4188 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" :
4189 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" :
4190 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" :
4191 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??");
4192 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " ");
4193
4194 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) {
4195 /* XXX print error info */
4196 } else {
4197 /* since we don't use chained s/g, don't support it here */
4198 for (i = 0; i < cc->header.sg_in_list; i++) {
4199 if ((i % 4) == 0)
4200 ciss_printf(sc, " ");
4201 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length);
4202 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1)))
4203 printf("\n");
4204 }
4205 }
4206}
4207
4208/************************************************************************
4209 * Print information about the status of a logical drive.
4210 */
4211static void
4212ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld)
4213{
4214 int bus, target, i;
4215
4216 if (ld->cl_lstatus == NULL) {
4217 printf("does not exist\n");
4218 return;
4219 }
4220
4221 /* print drive status */
4222 switch(ld->cl_lstatus->status) {
4223 case CISS_LSTATUS_OK:
4224 printf("online\n");
4225 break;
4226 case CISS_LSTATUS_INTERIM_RECOVERY:
4227 printf("in interim recovery mode\n");
4228 break;
4229 case CISS_LSTATUS_READY_RECOVERY:
4230 printf("ready to begin recovery\n");
4231 break;
4232 case CISS_LSTATUS_RECOVERING:
4233 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4234 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4235 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n",
4236 bus, target, ld->cl_lstatus->blocks_to_recover);
4237 break;
4238 case CISS_LSTATUS_EXPANDING:
4239 printf("being expanded, %u blocks remaining\n",
4240 ld->cl_lstatus->blocks_to_recover);
4241 break;
4242 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4243 printf("queued for expansion\n");
4244 break;
4245 case CISS_LSTATUS_FAILED:
4246 printf("queued for expansion\n");
4247 break;
4248 case CISS_LSTATUS_WRONG_PDRIVE:
4249 printf("wrong physical drive inserted\n");
4250 break;
4251 case CISS_LSTATUS_MISSING_PDRIVE:
4252 printf("missing a needed physical drive\n");
4253 break;
4254 case CISS_LSTATUS_BECOMING_READY:
4255 printf("becoming ready\n");
4256 break;
4257 }
4258
4259 /* print failed physical drives */
4260 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) {
4261 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]);
4262 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]);
4263 if (bus == -1)
4264 continue;
4265 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target,
4266 ld->cl_lstatus->drive_failure_map[i]);
4267 }
4268}
4269
4270#ifdef CISS_DEBUG
4271/************************************************************************
4272 * Print information about the controller/driver.
4273 */
4274static void
4275ciss_print_adapter(struct ciss_softc *sc)
4276{
4277 int i, j;
4278
4279 ciss_printf(sc, "ADAPTER:\n");
4280 for (i = 0; i < CISSQ_COUNT; i++) {
4281 ciss_printf(sc, "%s %d/%d\n",
4282 i == 0 ? "free" :
4283 i == 1 ? "busy" : "complete",
4284 sc->ciss_qstat[i].q_length,
4285 sc->ciss_qstat[i].q_max);
4286 }
4287 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests);
4288 ciss_printf(sc, "flags %b\n", sc->ciss_flags,
4289 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n");
4290
4291 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
4292 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
4293 ciss_printf(sc, "LOGICAL DRIVE %d: ", i);
4294 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]);
4295 }
4296 }
4297
4298 /* XXX Should physical drives be printed out here? */
4299
4300 for (i = 1; i < sc->ciss_max_requests; i++)
4301 ciss_print_request(sc->ciss_request + i);
4302}
4303
4304/* DDB hook */
4305static void
4306ciss_print0(void)
4307{
4308 struct ciss_softc *sc;
4309
4310 sc = devclass_get_softc(devclass_find("ciss"), 0);
4311 if (sc == NULL) {
4312 printf("no ciss controllers\n");
4313 } else {
4314 ciss_print_adapter(sc);
4315 }
4316}
4317#endif
4318
4319/************************************************************************
4320 * Return a name for a logical drive status value.
4321 */
4322static const char *
4323ciss_name_ldrive_status(int status)
4324{
4325 switch (status) {
4326 case CISS_LSTATUS_OK:
4327 return("OK");
4328 case CISS_LSTATUS_FAILED:
4329 return("failed");
4330 case CISS_LSTATUS_NOT_CONFIGURED:
4331 return("not configured");
4332 case CISS_LSTATUS_INTERIM_RECOVERY:
4333 return("interim recovery");
4334 case CISS_LSTATUS_READY_RECOVERY:
4335 return("ready for recovery");
4336 case CISS_LSTATUS_RECOVERING:
4337 return("recovering");
4338 case CISS_LSTATUS_WRONG_PDRIVE:
4339 return("wrong physical drive inserted");
4340 case CISS_LSTATUS_MISSING_PDRIVE:
4341 return("missing physical drive");
4342 case CISS_LSTATUS_EXPANDING:
4343 return("expanding");
4344 case CISS_LSTATUS_BECOMING_READY:
4345 return("becoming ready");
4346 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4347 return("queued for expansion");
4348 }
4349 return("unknown status");
4350}
4351
4352/************************************************************************
4353 * Return an online/offline/nonexistent value for a logical drive
4354 * status value.
4355 */
4356static int
4357ciss_decode_ldrive_status(int status)
4358{
4359 switch(status) {
4360 case CISS_LSTATUS_NOT_CONFIGURED:
4361 return(CISS_LD_NONEXISTENT);
4362
4363 case CISS_LSTATUS_OK:
4364 case CISS_LSTATUS_INTERIM_RECOVERY:
4365 case CISS_LSTATUS_READY_RECOVERY:
4366 case CISS_LSTATUS_RECOVERING:
4367 case CISS_LSTATUS_EXPANDING:
4368 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4369 return(CISS_LD_ONLINE);
4370
4371 case CISS_LSTATUS_FAILED:
4372 case CISS_LSTATUS_WRONG_PDRIVE:
4373 case CISS_LSTATUS_MISSING_PDRIVE:
4374 case CISS_LSTATUS_BECOMING_READY:
4375 default:
4376 return(CISS_LD_OFFLINE);
4377 }
4378}
4379
4380
4381/************************************************************************
4382 * Return a name for a logical drive's organisation.
4383 */
4384static const char *
4385ciss_name_ldrive_org(int org)
4386{
4387 switch(org) {
4388 case CISS_LDRIVE_RAID0:
4389 return("RAID 0");
4390 case CISS_LDRIVE_RAID1:
4391 return("RAID 1");
4392 case CISS_LDRIVE_RAID4:
4393 return("RAID 4");
4394 case CISS_LDRIVE_RAID5:
4395 return("RAID 5");
4396 case CISS_LDRIVE_RAID51:
4397 return("RAID 5+1");
4398 case CISS_LDRIVE_RAIDADG:
4399 return("RAID ADG");
4400 }
4401 return("unkown");
4402}
4403
4404/************************************************************************
4405 * Return a name for a command status value.
4406 */
4407static const char *
4408ciss_name_command_status(int status)
4409{
4410 switch(status) {
4411 case CISS_CMD_STATUS_SUCCESS:
4412 return("success");
4413 case CISS_CMD_STATUS_TARGET_STATUS:
4414 return("target status");
4415 case CISS_CMD_STATUS_DATA_UNDERRUN:
4416 return("data underrun");
4417 case CISS_CMD_STATUS_DATA_OVERRUN:
4418 return("data overrun");
4419 case CISS_CMD_STATUS_INVALID_COMMAND:
4420 return("invalid command");
4421 case CISS_CMD_STATUS_PROTOCOL_ERROR:
4422 return("protocol error");
4423 case CISS_CMD_STATUS_HARDWARE_ERROR:
4424 return("hardware error");
4425 case CISS_CMD_STATUS_CONNECTION_LOST:
4426 return("connection lost");
4427 case CISS_CMD_STATUS_ABORTED:
4428 return("aborted");
4429 case CISS_CMD_STATUS_ABORT_FAILED:
4430 return("abort failed");
4431 case CISS_CMD_STATUS_UNSOLICITED_ABORT:
4432 return("unsolicited abort");
4433 case CISS_CMD_STATUS_TIMEOUT:
4434 return("timeout");
4435 case CISS_CMD_STATUS_UNABORTABLE:
4436 return("unabortable");
4437 }
4438 return("unknown status");
4439}
4440
4441/************************************************************************
4442 * Handle an open on the control device.
4443 */
4444static int
|