FreeBSD/Linux Kernel Cross Reference
sys/dev/mly/mly.c
1 /*-
2 * Copyright (c) 2000, 2001 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: releng/6.4/sys/dev/mly/mly.c 165194 2006-12-14 02:57:07Z mjacob $
28 */
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/malloc.h>
33 #include <sys/kernel.h>
34 #include <sys/bus.h>
35 #include <sys/conf.h>
36 #include <sys/ctype.h>
37 #include <sys/ioccom.h>
38 #include <sys/stat.h>
39
40 #include <machine/bus.h>
41 #include <machine/resource.h>
42 #include <sys/rman.h>
43
44 #include <cam/cam.h>
45 #include <cam/cam_ccb.h>
46 #include <cam/cam_periph.h>
47 #include <cam/cam_sim.h>
48 #include <cam/cam_xpt_sim.h>
49 #include <cam/scsi/scsi_all.h>
50 #include <cam/scsi/scsi_message.h>
51
52 #include <dev/pci/pcireg.h>
53 #include <dev/pci/pcivar.h>
54
55 #include <dev/mly/mlyreg.h>
56 #include <dev/mly/mlyio.h>
57 #include <dev/mly/mlyvar.h>
58 #include <dev/mly/mly_tables.h>
59
60 static int mly_probe(device_t dev);
61 static int mly_attach(device_t dev);
62 static int mly_pci_attach(struct mly_softc *sc);
63 static int mly_detach(device_t dev);
64 static int mly_shutdown(device_t dev);
65 static void mly_intr(void *arg);
66
67 static int mly_sg_map(struct mly_softc *sc);
68 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error);
69 static int mly_mmbox_map(struct mly_softc *sc);
70 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error);
71 static void mly_free(struct mly_softc *sc);
72
73 static int mly_get_controllerinfo(struct mly_softc *sc);
74 static void mly_scan_devices(struct mly_softc *sc);
75 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target);
76 static void mly_complete_rescan(struct mly_command *mc);
77 static int mly_get_eventstatus(struct mly_softc *sc);
78 static int mly_enable_mmbox(struct mly_softc *sc);
79 static int mly_flush(struct mly_softc *sc);
80 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data,
81 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length);
82 static void mly_check_event(struct mly_softc *sc);
83 static void mly_fetch_event(struct mly_softc *sc);
84 static void mly_complete_event(struct mly_command *mc);
85 static void mly_process_event(struct mly_softc *sc, struct mly_event *me);
86 static void mly_periodic(void *data);
87
88 static int mly_immediate_command(struct mly_command *mc);
89 static int mly_start(struct mly_command *mc);
90 static void mly_done(struct mly_softc *sc);
91 static void mly_complete(void *context, int pending);
92
93 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp);
94 static void mly_release_command(struct mly_command *mc);
95 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error);
96 static int mly_alloc_commands(struct mly_softc *sc);
97 static void mly_release_commands(struct mly_softc *sc);
98 static void mly_map_command(struct mly_command *mc);
99 static void mly_unmap_command(struct mly_command *mc);
100
101 static int mly_cam_attach(struct mly_softc *sc);
102 static void mly_cam_detach(struct mly_softc *sc);
103 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target);
104 static void mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb);
105 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb);
106 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
107 static void mly_cam_poll(struct cam_sim *sim);
108 static void mly_cam_complete(struct mly_command *mc);
109 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target);
110 static int mly_name_device(struct mly_softc *sc, int bus, int target);
111
112 static int mly_fwhandshake(struct mly_softc *sc);
113
114 static void mly_describe_controller(struct mly_softc *sc);
115 #ifdef MLY_DEBUG
116 static void mly_printstate(struct mly_softc *sc);
117 static void mly_print_command(struct mly_command *mc);
118 static void mly_print_packet(struct mly_command *mc);
119 static void mly_panic(struct mly_softc *sc, char *reason);
120 #endif
121 void mly_print_controller(int controller);
122 static int mly_timeout(struct mly_softc *sc);
123
124
125 static d_open_t mly_user_open;
126 static d_close_t mly_user_close;
127 static d_ioctl_t mly_user_ioctl;
128 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc);
129 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh);
130
131 #define MLY_CMD_TIMEOUT 20
132
133 static device_method_t mly_methods[] = {
134 /* Device interface */
135 DEVMETHOD(device_probe, mly_probe),
136 DEVMETHOD(device_attach, mly_attach),
137 DEVMETHOD(device_detach, mly_detach),
138 DEVMETHOD(device_shutdown, mly_shutdown),
139 { 0, 0 }
140 };
141
142 static driver_t mly_pci_driver = {
143 "mly",
144 mly_methods,
145 sizeof(struct mly_softc)
146 };
147
148 static devclass_t mly_devclass;
149 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0);
150 MODULE_DEPEND(mly, pci, 1, 1, 1);
151 MODULE_DEPEND(mly, cam, 1, 1, 1);
152
153 static struct cdevsw mly_cdevsw = {
154 .d_version = D_VERSION,
155 .d_flags = D_NEEDGIANT,
156 .d_open = mly_user_open,
157 .d_close = mly_user_close,
158 .d_ioctl = mly_user_ioctl,
159 .d_name = "mly",
160 };
161
162 /********************************************************************************
163 ********************************************************************************
164 Device Interface
165 ********************************************************************************
166 ********************************************************************************/
167
168 static struct mly_ident
169 {
170 u_int16_t vendor;
171 u_int16_t device;
172 u_int16_t subvendor;
173 u_int16_t subdevice;
174 int hwif;
175 char *desc;
176 } mly_identifiers[] = {
177 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"},
178 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"},
179 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"},
180 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"},
181 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"},
182 {0, 0, 0, 0, 0, 0}
183 };
184
185 /********************************************************************************
186 * Compare the provided PCI device with the list we support.
187 */
188 static int
189 mly_probe(device_t dev)
190 {
191 struct mly_ident *m;
192
193 debug_called(1);
194
195 for (m = mly_identifiers; m->vendor != 0; m++) {
196 if ((m->vendor == pci_get_vendor(dev)) &&
197 (m->device == pci_get_device(dev)) &&
198 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
199 (m->subdevice == pci_get_subdevice(dev))))) {
200
201 device_set_desc(dev, m->desc);
202 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */
203 }
204 }
205 return(ENXIO);
206 }
207
208 /********************************************************************************
209 * Initialise the controller and softc
210 */
211 static int
212 mly_attach(device_t dev)
213 {
214 struct mly_softc *sc = device_get_softc(dev);
215 int error;
216
217 debug_called(1);
218
219 sc->mly_dev = dev;
220
221 #ifdef MLY_DEBUG
222 if (device_get_unit(sc->mly_dev) == 0)
223 mly_softc0 = sc;
224 #endif
225
226 /*
227 * Do PCI-specific initialisation.
228 */
229 if ((error = mly_pci_attach(sc)) != 0)
230 goto out;
231
232 /*
233 * Initialise per-controller queues.
234 */
235 mly_initq_free(sc);
236 mly_initq_busy(sc);
237 mly_initq_complete(sc);
238
239 #if __FreeBSD_version >= 500005
240 /*
241 * Initialise command-completion task.
242 */
243 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc);
244 #endif
245
246 /* disable interrupts before we start talking to the controller */
247 MLY_MASK_INTERRUPTS(sc);
248
249 /*
250 * Wait for the controller to come ready, handshake with the firmware if required.
251 * This is typically only necessary on platforms where the controller BIOS does not
252 * run.
253 */
254 if ((error = mly_fwhandshake(sc)))
255 goto out;
256
257 /*
258 * Allocate initial command buffers.
259 */
260 if ((error = mly_alloc_commands(sc)))
261 goto out;
262
263 /*
264 * Obtain controller feature information
265 */
266 if ((error = mly_get_controllerinfo(sc)))
267 goto out;
268
269 /*
270 * Reallocate command buffers now we know how many we want.
271 */
272 mly_release_commands(sc);
273 if ((error = mly_alloc_commands(sc)))
274 goto out;
275
276 /*
277 * Get the current event counter for health purposes, populate the initial
278 * health status buffer.
279 */
280 if ((error = mly_get_eventstatus(sc)))
281 goto out;
282
283 /*
284 * Enable memory-mailbox mode.
285 */
286 if ((error = mly_enable_mmbox(sc)))
287 goto out;
288
289 /*
290 * Attach to CAM.
291 */
292 if ((error = mly_cam_attach(sc)))
293 goto out;
294
295 /*
296 * Print a little information about the controller
297 */
298 mly_describe_controller(sc);
299
300 /*
301 * Mark all attached devices for rescan.
302 */
303 mly_scan_devices(sc);
304
305 /*
306 * Instigate the first status poll immediately. Rescan completions won't
307 * happen until interrupts are enabled, which should still be before
308 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay".
309 */
310 mly_periodic((void *)sc);
311
312 /*
313 * Create the control device.
314 */
315 sc->mly_dev_t = make_dev(&mly_cdevsw, device_get_unit(sc->mly_dev), UID_ROOT, GID_OPERATOR,
316 S_IRUSR | S_IWUSR, "mly%d", device_get_unit(sc->mly_dev));
317 sc->mly_dev_t->si_drv1 = sc;
318
319 /* enable interrupts now */
320 MLY_UNMASK_INTERRUPTS(sc);
321
322 #ifdef MLY_DEBUG
323 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz);
324 #endif
325
326 out:
327 if (error != 0)
328 mly_free(sc);
329 return(error);
330 }
331
332 /********************************************************************************
333 * Perform PCI-specific initialisation.
334 */
335 static int
336 mly_pci_attach(struct mly_softc *sc)
337 {
338 int i, error;
339 u_int32_t command;
340
341 debug_called(1);
342
343 /* assume failure is 'not configured' */
344 error = ENXIO;
345
346 /*
347 * Verify that the adapter is correctly set up in PCI space.
348 *
349 * XXX we shouldn't do this; the PCI code should.
350 */
351 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2);
352 command |= PCIM_CMD_BUSMASTEREN;
353 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2);
354 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2);
355 if (!(command & PCIM_CMD_BUSMASTEREN)) {
356 mly_printf(sc, "can't enable busmaster feature\n");
357 goto fail;
358 }
359 if ((command & PCIM_CMD_MEMEN) == 0) {
360 mly_printf(sc, "memory window not available\n");
361 goto fail;
362 }
363
364 /*
365 * Allocate the PCI register window.
366 */
367 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */
368 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev,
369 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) {
370 mly_printf(sc, "can't allocate register window\n");
371 goto fail;
372 }
373 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource);
374 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource);
375
376 /*
377 * Allocate and connect our interrupt.
378 */
379 sc->mly_irq_rid = 0;
380 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ,
381 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
382 mly_printf(sc, "can't allocate interrupt\n");
383 goto fail;
384 }
385 if (bus_setup_intr(sc->mly_dev, sc->mly_irq, INTR_TYPE_CAM | INTR_ENTROPY, mly_intr, sc, &sc->mly_intr)) {
386 mly_printf(sc, "can't set up interrupt\n");
387 goto fail;
388 }
389
390 /* assume failure is 'out of memory' */
391 error = ENOMEM;
392
393 /*
394 * Allocate the parent bus DMA tag appropriate for our PCI interface.
395 *
396 * Note that all of these controllers are 64-bit capable.
397 */
398 if (bus_dma_tag_create(NULL, /* parent */
399 1, 0, /* alignment, boundary */
400 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
401 BUS_SPACE_MAXADDR, /* highaddr */
402 NULL, NULL, /* filter, filterarg */
403 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */
404 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
405 BUS_DMA_ALLOCNOW, /* flags */
406 NULL, /* lockfunc */
407 NULL, /* lockarg */
408 &sc->mly_parent_dmat)) {
409 mly_printf(sc, "can't allocate parent DMA tag\n");
410 goto fail;
411 }
412
413 /*
414 * Create DMA tag for mapping buffers into controller-addressable space.
415 */
416 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
417 1, 0, /* alignment, boundary */
418 BUS_SPACE_MAXADDR, /* lowaddr */
419 BUS_SPACE_MAXADDR, /* highaddr */
420 NULL, NULL, /* filter, filterarg */
421 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */
422 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
423 0, /* flags */
424 busdma_lock_mutex, /* lockfunc */
425 &Giant, /* lockarg */
426 &sc->mly_buffer_dmat)) {
427 mly_printf(sc, "can't allocate buffer DMA tag\n");
428 goto fail;
429 }
430
431 /*
432 * Initialise the DMA tag for command packets.
433 */
434 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
435 1, 0, /* alignment, boundary */
436 BUS_SPACE_MAXADDR, /* lowaddr */
437 BUS_SPACE_MAXADDR, /* highaddr */
438 NULL, NULL, /* filter, filterarg */
439 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */
440 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
441 BUS_DMA_ALLOCNOW, /* flags */
442 NULL, NULL, /* lockfunc, lockarg */
443 &sc->mly_packet_dmat)) {
444 mly_printf(sc, "can't allocate command packet DMA tag\n");
445 goto fail;
446 }
447
448 /*
449 * Detect the hardware interface version
450 */
451 for (i = 0; mly_identifiers[i].vendor != 0; i++) {
452 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) &&
453 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) {
454 sc->mly_hwif = mly_identifiers[i].hwif;
455 switch(sc->mly_hwif) {
456 case MLY_HWIF_I960RX:
457 debug(1, "set hardware up for i960RX");
458 sc->mly_doorbell_true = 0x00;
459 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX;
460 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX;
461 sc->mly_idbr = MLY_I960RX_IDBR;
462 sc->mly_odbr = MLY_I960RX_ODBR;
463 sc->mly_error_status = MLY_I960RX_ERROR_STATUS;
464 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS;
465 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK;
466 break;
467 case MLY_HWIF_STRONGARM:
468 debug(1, "set hardware up for StrongARM");
469 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */
470 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX;
471 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX;
472 sc->mly_idbr = MLY_STRONGARM_IDBR;
473 sc->mly_odbr = MLY_STRONGARM_ODBR;
474 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS;
475 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS;
476 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK;
477 break;
478 }
479 break;
480 }
481 }
482
483 /*
484 * Create the scatter/gather mappings.
485 */
486 if ((error = mly_sg_map(sc)))
487 goto fail;
488
489 /*
490 * Allocate and map the memory mailbox
491 */
492 if ((error = mly_mmbox_map(sc)))
493 goto fail;
494
495 error = 0;
496
497 fail:
498 return(error);
499 }
500
501 /********************************************************************************
502 * Shut the controller down and detach all our resources.
503 */
504 static int
505 mly_detach(device_t dev)
506 {
507 int error;
508
509 if ((error = mly_shutdown(dev)) != 0)
510 return(error);
511
512 mly_free(device_get_softc(dev));
513 return(0);
514 }
515
516 /********************************************************************************
517 * Bring the controller to a state where it can be safely left alone.
518 *
519 * Note that it should not be necessary to wait for any outstanding commands,
520 * as they should be completed prior to calling here.
521 *
522 * XXX this applies for I/O, but not status polls; we should beware of
523 * the case where a status command is running while we detach.
524 */
525 static int
526 mly_shutdown(device_t dev)
527 {
528 struct mly_softc *sc = device_get_softc(dev);
529
530 debug_called(1);
531
532 if (sc->mly_state & MLY_STATE_OPEN)
533 return(EBUSY);
534
535 /* kill the periodic event */
536 untimeout(mly_periodic, sc, sc->mly_periodic);
537
538 /* flush controller */
539 mly_printf(sc, "flushing cache...");
540 printf("%s\n", mly_flush(sc) ? "failed" : "done");
541
542 MLY_MASK_INTERRUPTS(sc);
543
544 return(0);
545 }
546
547 /*******************************************************************************
548 * Take an interrupt, or be poked by other code to look for interrupt-worthy
549 * status.
550 */
551 static void
552 mly_intr(void *arg)
553 {
554 struct mly_softc *sc = (struct mly_softc *)arg;
555
556 debug_called(2);
557
558 mly_done(sc);
559 };
560
561 /********************************************************************************
562 ********************************************************************************
563 Bus-dependant Resource Management
564 ********************************************************************************
565 ********************************************************************************/
566
567 /********************************************************************************
568 * Allocate memory for the scatter/gather tables
569 */
570 static int
571 mly_sg_map(struct mly_softc *sc)
572 {
573 size_t segsize;
574
575 debug_called(1);
576
577 /*
578 * Create a single tag describing a region large enough to hold all of
579 * the s/g lists we will need.
580 */
581 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES;
582 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
583 1, 0, /* alignment,boundary */
584 BUS_SPACE_MAXADDR, /* lowaddr */
585 BUS_SPACE_MAXADDR, /* highaddr */
586 NULL, NULL, /* filter, filterarg */
587 segsize, 1, /* maxsize, nsegments */
588 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
589 BUS_DMA_ALLOCNOW, /* flags */
590 NULL, NULL, /* lockfunc, lockarg */
591 &sc->mly_sg_dmat)) {
592 mly_printf(sc, "can't allocate scatter/gather DMA tag\n");
593 return(ENOMEM);
594 }
595
596 /*
597 * Allocate enough s/g maps for all commands and permanently map them into
598 * controller-visible space.
599 *
600 * XXX this assumes we can get enough space for all the s/g maps in one
601 * contiguous slab.
602 */
603 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table,
604 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) {
605 mly_printf(sc, "can't allocate s/g table\n");
606 return(ENOMEM);
607 }
608 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table,
609 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0)
610 return (ENOMEM);
611 return(0);
612 }
613
614 /********************************************************************************
615 * Save the physical address of the base of the s/g table.
616 */
617 static void
618 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
619 {
620 struct mly_softc *sc = (struct mly_softc *)arg;
621
622 debug_called(1);
623
624 /* save base of s/g table's address in bus space */
625 sc->mly_sg_busaddr = segs->ds_addr;
626 }
627
628 /********************************************************************************
629 * Allocate memory for the memory-mailbox interface
630 */
631 static int
632 mly_mmbox_map(struct mly_softc *sc)
633 {
634
635 /*
636 * Create a DMA tag for a single contiguous region large enough for the
637 * memory mailbox structure.
638 */
639 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
640 1, 0, /* alignment,boundary */
641 BUS_SPACE_MAXADDR, /* lowaddr */
642 BUS_SPACE_MAXADDR, /* highaddr */
643 NULL, NULL, /* filter, filterarg */
644 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */
645 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
646 BUS_DMA_ALLOCNOW, /* flags */
647 NULL, NULL, /* lockfunc, lockarg */
648 &sc->mly_mmbox_dmat)) {
649 mly_printf(sc, "can't allocate memory mailbox DMA tag\n");
650 return(ENOMEM);
651 }
652
653 /*
654 * Allocate the buffer
655 */
656 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) {
657 mly_printf(sc, "can't allocate memory mailbox\n");
658 return(ENOMEM);
659 }
660 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox,
661 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc,
662 BUS_DMA_NOWAIT) != 0)
663 return (ENOMEM);
664 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox));
665 return(0);
666
667 }
668
669 /********************************************************************************
670 * Save the physical address of the memory mailbox
671 */
672 static void
673 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
674 {
675 struct mly_softc *sc = (struct mly_softc *)arg;
676
677 debug_called(1);
678
679 sc->mly_mmbox_busaddr = segs->ds_addr;
680 }
681
682 /********************************************************************************
683 * Free all of the resources associated with (sc)
684 *
685 * Should not be called if the controller is active.
686 */
687 static void
688 mly_free(struct mly_softc *sc)
689 {
690
691 debug_called(1);
692
693 /* Remove the management device */
694 destroy_dev(sc->mly_dev_t);
695
696 /* detach from CAM */
697 mly_cam_detach(sc);
698
699 /* release command memory */
700 mly_release_commands(sc);
701
702 /* throw away the controllerinfo structure */
703 if (sc->mly_controllerinfo != NULL)
704 free(sc->mly_controllerinfo, M_DEVBUF);
705
706 /* throw away the controllerparam structure */
707 if (sc->mly_controllerparam != NULL)
708 free(sc->mly_controllerparam, M_DEVBUF);
709
710 /* destroy data-transfer DMA tag */
711 if (sc->mly_buffer_dmat)
712 bus_dma_tag_destroy(sc->mly_buffer_dmat);
713
714 /* free and destroy DMA memory and tag for s/g lists */
715 if (sc->mly_sg_table) {
716 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap);
717 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap);
718 }
719 if (sc->mly_sg_dmat)
720 bus_dma_tag_destroy(sc->mly_sg_dmat);
721
722 /* free and destroy DMA memory and tag for memory mailbox */
723 if (sc->mly_mmbox) {
724 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap);
725 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap);
726 }
727 if (sc->mly_mmbox_dmat)
728 bus_dma_tag_destroy(sc->mly_mmbox_dmat);
729
730 /* disconnect the interrupt handler */
731 if (sc->mly_intr)
732 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr);
733 if (sc->mly_irq != NULL)
734 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq);
735
736 /* destroy the parent DMA tag */
737 if (sc->mly_parent_dmat)
738 bus_dma_tag_destroy(sc->mly_parent_dmat);
739
740 /* release the register window mapping */
741 if (sc->mly_regs_resource != NULL)
742 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource);
743 }
744
745 /********************************************************************************
746 ********************************************************************************
747 Command Wrappers
748 ********************************************************************************
749 ********************************************************************************/
750
751 /********************************************************************************
752 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc.
753 */
754 static int
755 mly_get_controllerinfo(struct mly_softc *sc)
756 {
757 struct mly_command_ioctl mci;
758 u_int8_t status;
759 int error;
760
761 debug_called(1);
762
763 if (sc->mly_controllerinfo != NULL)
764 free(sc->mly_controllerinfo, M_DEVBUF);
765
766 /* build the getcontrollerinfo ioctl and send it */
767 bzero(&mci, sizeof(mci));
768 sc->mly_controllerinfo = NULL;
769 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO;
770 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo),
771 &status, NULL, NULL)))
772 return(error);
773 if (status != 0)
774 return(EIO);
775
776 if (sc->mly_controllerparam != NULL)
777 free(sc->mly_controllerparam, M_DEVBUF);
778
779 /* build the getcontrollerparameter ioctl and send it */
780 bzero(&mci, sizeof(mci));
781 sc->mly_controllerparam = NULL;
782 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER;
783 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam),
784 &status, NULL, NULL)))
785 return(error);
786 if (status != 0)
787 return(EIO);
788
789 return(0);
790 }
791
792 /********************************************************************************
793 * Schedule all possible devices for a rescan.
794 *
795 */
796 static void
797 mly_scan_devices(struct mly_softc *sc)
798 {
799 int bus, target;
800
801 debug_called(1);
802
803 /*
804 * Clear any previous BTL information.
805 */
806 bzero(&sc->mly_btl, sizeof(sc->mly_btl));
807
808 /*
809 * Mark all devices as requiring a rescan, and let the next
810 * periodic scan collect them.
811 */
812 for (bus = 0; bus < sc->mly_cam_channels; bus++)
813 if (MLY_BUS_IS_VALID(sc, bus))
814 for (target = 0; target < MLY_MAX_TARGETS; target++)
815 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN;
816
817 }
818
819 /********************************************************************************
820 * Rescan a device, possibly as a consequence of getting an event which suggests
821 * that it may have changed.
822 *
823 * If we suffer resource starvation, we can abandon the rescan as we'll be
824 * retried.
825 */
826 static void
827 mly_rescan_btl(struct mly_softc *sc, int bus, int target)
828 {
829 struct mly_command *mc;
830 struct mly_command_ioctl *mci;
831
832 debug_called(1);
833
834 /* check that this bus is valid */
835 if (!MLY_BUS_IS_VALID(sc, bus))
836 return;
837
838 /* get a command */
839 if (mly_alloc_command(sc, &mc))
840 return;
841
842 /* set up the data buffer */
843 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) {
844 mly_release_command(mc);
845 return;
846 }
847 mc->mc_flags |= MLY_CMD_DATAIN;
848 mc->mc_complete = mly_complete_rescan;
849
850 /*
851 * Build the ioctl.
852 */
853 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
854 mci->opcode = MDACMD_IOCTL;
855 mci->addr.phys.controller = 0;
856 mci->timeout.value = 30;
857 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
858 if (MLY_BUS_IS_VIRTUAL(sc, bus)) {
859 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid);
860 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID;
861 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target);
862 debug(1, "logical device %d", mci->addr.log.logdev);
863 } else {
864 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid);
865 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID;
866 mci->addr.phys.lun = 0;
867 mci->addr.phys.target = target;
868 mci->addr.phys.channel = bus;
869 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target);
870 }
871
872 /*
873 * Dispatch the command. If we successfully send the command, clear the rescan
874 * bit.
875 */
876 if (mly_start(mc) != 0) {
877 mly_release_command(mc);
878 } else {
879 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */
880 }
881 }
882
883 /********************************************************************************
884 * Handle the completion of a rescan operation
885 */
886 static void
887 mly_complete_rescan(struct mly_command *mc)
888 {
889 struct mly_softc *sc = mc->mc_sc;
890 struct mly_ioctl_getlogdevinfovalid *ldi;
891 struct mly_ioctl_getphysdevinfovalid *pdi;
892 struct mly_command_ioctl *mci;
893 struct mly_btl btl, *btlp;
894 int bus, target, rescan;
895
896 debug_called(1);
897
898 /*
899 * Recover the bus and target from the command. We need these even in
900 * the case where we don't have a useful response.
901 */
902 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
903 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) {
904 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev);
905 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev);
906 } else {
907 bus = mci->addr.phys.channel;
908 target = mci->addr.phys.target;
909 }
910 /* XXX validate bus/target? */
911
912 /* the default result is 'no device' */
913 bzero(&btl, sizeof(btl));
914
915 /* if the rescan completed OK, we have possibly-new BTL data */
916 if (mc->mc_status == 0) {
917 if (mc->mc_length == sizeof(*ldi)) {
918 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data;
919 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) ||
920 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) {
921 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n",
922 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number),
923 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number));
924 /* XXX what can we do about this? */
925 }
926 btl.mb_flags = MLY_BTL_LOGICAL;
927 btl.mb_type = ldi->raid_level;
928 btl.mb_state = ldi->state;
929 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number,
930 mly_describe_code(mly_table_device_type, ldi->raid_level),
931 mly_describe_code(mly_table_device_state, ldi->state));
932 } else if (mc->mc_length == sizeof(*pdi)) {
933 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data;
934 if ((pdi->channel != bus) || (pdi->target != target)) {
935 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n",
936 bus, target, pdi->channel, pdi->target);
937 /* XXX what can we do about this? */
938 }
939 btl.mb_flags = MLY_BTL_PHYSICAL;
940 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL;
941 btl.mb_state = pdi->state;
942 btl.mb_speed = pdi->speed;
943 btl.mb_width = pdi->width;
944 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED)
945 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED;
946 debug(1, "BTL rescan for %d:%d returns %s", bus, target,
947 mly_describe_code(mly_table_device_state, pdi->state));
948 } else {
949 mly_printf(sc, "BTL rescan result invalid\n");
950 }
951 }
952
953 free(mc->mc_data, M_DEVBUF);
954 mly_release_command(mc);
955
956 /*
957 * Decide whether we need to rescan the device.
958 */
959 rescan = 0;
960
961 /* device type changes (usually between 'nothing' and 'something') */
962 btlp = &sc->mly_btl[bus][target];
963 if (btl.mb_flags != btlp->mb_flags) {
964 debug(1, "flags changed, rescanning");
965 rescan = 1;
966 }
967
968 /* XXX other reasons? */
969
970 /*
971 * Update BTL information.
972 */
973 *btlp = btl;
974
975 /*
976 * Perform CAM rescan if required.
977 */
978 if (rescan)
979 mly_cam_rescan_btl(sc, bus, target);
980 }
981
982 /********************************************************************************
983 * Get the current health status and set the 'next event' counter to suit.
984 */
985 static int
986 mly_get_eventstatus(struct mly_softc *sc)
987 {
988 struct mly_command_ioctl mci;
989 struct mly_health_status *mh;
990 u_int8_t status;
991 int error;
992
993 /* build the gethealthstatus ioctl and send it */
994 bzero(&mci, sizeof(mci));
995 mh = NULL;
996 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS;
997
998 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL)))
999 return(error);
1000 if (status != 0)
1001 return(EIO);
1002
1003 /* get the event counter */
1004 sc->mly_event_change = mh->change_counter;
1005 sc->mly_event_waiting = mh->next_event;
1006 sc->mly_event_counter = mh->next_event;
1007
1008 /* save the health status into the memory mailbox */
1009 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh));
1010
1011 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event);
1012
1013 free(mh, M_DEVBUF);
1014 return(0);
1015 }
1016
1017 /********************************************************************************
1018 * Enable the memory mailbox mode.
1019 */
1020 static int
1021 mly_enable_mmbox(struct mly_softc *sc)
1022 {
1023 struct mly_command_ioctl mci;
1024 u_int8_t *sp, status;
1025 int error;
1026
1027 debug_called(1);
1028
1029 /* build the ioctl and send it */
1030 bzero(&mci, sizeof(mci));
1031 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX;
1032 /* set buffer addresses */
1033 mci.param.setmemorymailbox.command_mailbox_physaddr =
1034 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command);
1035 mci.param.setmemorymailbox.status_mailbox_physaddr =
1036 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status);
1037 mci.param.setmemorymailbox.health_buffer_physaddr =
1038 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health);
1039
1040 /* set buffer sizes - abuse of data_size field is revolting */
1041 sp = (u_int8_t *)&mci.data_size;
1042 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024);
1043 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024;
1044 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024;
1045
1046 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox,
1047 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0],
1048 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1],
1049 mci.param.setmemorymailbox.health_buffer_physaddr,
1050 mci.param.setmemorymailbox.health_buffer_size);
1051
1052 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1053 return(error);
1054 if (status != 0)
1055 return(EIO);
1056 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE;
1057 debug(1, "memory mailbox active");
1058 return(0);
1059 }
1060
1061 /********************************************************************************
1062 * Flush all pending I/O from the controller.
1063 */
1064 static int
1065 mly_flush(struct mly_softc *sc)
1066 {
1067 struct mly_command_ioctl mci;
1068 u_int8_t status;
1069 int error;
1070
1071 debug_called(1);
1072
1073 /* build the ioctl */
1074 bzero(&mci, sizeof(mci));
1075 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA;
1076 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER;
1077
1078 /* pass it off to the controller */
1079 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1080 return(error);
1081
1082 return((status == 0) ? 0 : EIO);
1083 }
1084
1085 /********************************************************************************
1086 * Perform an ioctl command.
1087 *
1088 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL
1089 * the command requires data transfer from the controller, and we will allocate
1090 * a buffer for it. If (*data) is not NULL, the command requires data transfer
1091 * to the controller.
1092 *
1093 * XXX passing in the whole ioctl structure is ugly. Better ideas?
1094 *
1095 * XXX we don't even try to handle the case where datasize > 4k. We should.
1096 */
1097 static int
1098 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize,
1099 u_int8_t *status, void *sense_buffer, size_t *sense_length)
1100 {
1101 struct mly_command *mc;
1102 struct mly_command_ioctl *mci;
1103 int error;
1104
1105 debug_called(1);
1106
1107 mc = NULL;
1108 if (mly_alloc_command(sc, &mc)) {
1109 error = ENOMEM;
1110 goto out;
1111 }
1112
1113 /* copy the ioctl structure, but save some important fields and then fixup */
1114 mci = &mc->mc_packet->ioctl;
1115 ioctl->sense_buffer_address = mci->sense_buffer_address;
1116 ioctl->maximum_sense_size = mci->maximum_sense_size;
1117 *mci = *ioctl;
1118 mci->opcode = MDACMD_IOCTL;
1119 mci->timeout.value = 30;
1120 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
1121
1122 /* handle the data buffer */
1123 if (data != NULL) {
1124 if (*data == NULL) {
1125 /* allocate data buffer */
1126 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) {
1127 error = ENOMEM;
1128 goto out;
1129 }
1130 mc->mc_flags |= MLY_CMD_DATAIN;
1131 } else {
1132 mc->mc_data = *data;
1133 mc->mc_flags |= MLY_CMD_DATAOUT;
1134 }
1135 mc->mc_length = datasize;
1136 mc->mc_packet->generic.data_size = datasize;
1137 }
1138
1139 /* run the command */
1140 if ((error = mly_immediate_command(mc)))
1141 goto out;
1142
1143 /* clean up and return any data */
1144 *status = mc->mc_status;
1145 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) {
1146 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense);
1147 *sense_length = mc->mc_sense;
1148 goto out;
1149 }
1150
1151 /* should we return a data pointer? */
1152 if ((data != NULL) && (*data == NULL))
1153 *data = mc->mc_data;
1154
1155 /* command completed OK */
1156 error = 0;
1157
1158 out:
1159 if (mc != NULL) {
1160 /* do we need to free a data buffer we allocated? */
1161 if (error && (mc->mc_data != NULL) && (*data == NULL))
1162 free(mc->mc_data, M_DEVBUF);
1163 mly_release_command(mc);
1164 }
1165 return(error);
1166 }
1167
1168 /********************************************************************************
1169 * Check for event(s) outstanding in the controller.
1170 */
1171 static void
1172 mly_check_event(struct mly_softc *sc)
1173 {
1174
1175 /*
1176 * The controller may have updated the health status information,
1177 * so check for it here. Note that the counters are all in host memory,
1178 * so this check is very cheap. Also note that we depend on checking on
1179 * completion
1180 */
1181 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) {
1182 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter;
1183 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change,
1184 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event);
1185 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event;
1186
1187 /* wake up anyone that might be interested in this */
1188 wakeup(&sc->mly_event_change);
1189 }
1190 if (sc->mly_event_counter != sc->mly_event_waiting)
1191 mly_fetch_event(sc);
1192 }
1193
1194 /********************************************************************************
1195 * Fetch one event from the controller.
1196 *
1197 * If we fail due to resource starvation, we'll be retried the next time a
1198 * command completes.
1199 */
1200 static void
1201 mly_fetch_event(struct mly_softc *sc)
1202 {
1203 struct mly_command *mc;
1204 struct mly_command_ioctl *mci;
1205 int s;
1206 u_int32_t event;
1207
1208 debug_called(1);
1209
1210 /* get a command */
1211 if (mly_alloc_command(sc, &mc))
1212 return;
1213
1214 /* set up the data buffer */
1215 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) {
1216 mly_release_command(mc);
1217 return;
1218 }
1219 mc->mc_length = sizeof(struct mly_event);
1220 mc->mc_flags |= MLY_CMD_DATAIN;
1221 mc->mc_complete = mly_complete_event;
1222
1223 /*
1224 * Get an event number to fetch. It's possible that we've raced with another
1225 * context for the last event, in which case there will be no more events.
1226 */
1227 s = splcam();
1228 if (sc->mly_event_counter == sc->mly_event_waiting) {
1229 mly_release_command(mc);
1230 splx(s);
1231 return;
1232 }
1233 event = sc->mly_event_counter++;
1234 splx(s);
1235
1236 /*
1237 * Build the ioctl.
1238 *
1239 * At this point we are committed to sending this request, as it
1240 * will be the only one constructed for this particular event number.
1241 */
1242 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
1243 mci->opcode = MDACMD_IOCTL;
1244 mci->data_size = sizeof(struct mly_event);
1245 mci->addr.phys.lun = (event >> 16) & 0xff;
1246 mci->addr.phys.target = (event >> 24) & 0xff;
1247 mci->addr.phys.channel = 0;
1248 mci->addr.phys.controller = 0;
1249 mci->timeout.value = 30;
1250 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
1251 mci->sub_ioctl = MDACIOCTL_GETEVENT;
1252 mci->param.getevent.sequence_number_low = event & 0xffff;
1253
1254 debug(1, "fetch event %u", event);
1255
1256 /*
1257 * Submit the command.
1258 *
1259 * Note that failure of mly_start() will result in this event never being
1260 * fetched.
1261 */
1262 if (mly_start(mc) != 0) {
1263 mly_printf(sc, "couldn't fetch event %u\n", event);
1264 mly_release_command(mc);
1265 }
1266 }
1267
1268 /********************************************************************************
1269 * Handle the completion of an event poll.
1270 */
1271 static void
1272 mly_complete_event(struct mly_command *mc)
1273 {
1274 struct mly_softc *sc = mc->mc_sc;
1275 struct mly_event *me = (struct mly_event *)mc->mc_data;
1276
1277 debug_called(1);
1278
1279 /*
1280 * If the event was successfully fetched, process it.
1281 */
1282 if (mc->mc_status == SCSI_STATUS_OK) {
1283 mly_process_event(sc, me);
1284 free(me, M_DEVBUF);
1285 }
1286 mly_release_command(mc);
1287
1288 /*
1289 * Check for another event.
1290 */
1291 mly_check_event(sc);
1292 }
1293
1294 /********************************************************************************
1295 * Process a controller event.
1296 */
1297 static void
1298 mly_process_event(struct mly_softc *sc, struct mly_event *me)
1299 {
1300 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0];
1301 char *fp, *tp;
1302 int bus, target, event, class, action;
1303
1304 /*
1305 * Errors can be reported using vendor-unique sense data. In this case, the
1306 * event code will be 0x1c (Request sense data present), the sense key will
1307 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the
1308 * actual event code will be a 16-bit value comprised of the ASCQ (low byte)
1309 * and low seven bits of the ASC (low seven bits of the high byte).
1310 */
1311 if ((me->code == 0x1c) &&
1312 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) &&
1313 (ssd->add_sense_code & 0x80)) {
1314 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual;
1315 } else {
1316 event = me->code;
1317 }
1318
1319 /* look up event, get codes */
1320 fp = mly_describe_code(mly_table_event, event);
1321
1322 debug(1, "Event %d code 0x%x", me->sequence_number, me->code);
1323
1324 /* quiet event? */
1325 class = fp[0];
1326 if (isupper(class) && bootverbose)
1327 class = tolower(class);
1328
1329 /* get action code, text string */
1330 action = fp[1];
1331 tp = &fp[2];
1332
1333 /*
1334 * Print some information about the event.
1335 *
1336 * This code uses a table derived from the corresponding portion of the Linux
1337 * driver, and thus the parser is very similar.
1338 */
1339 switch(class) {
1340 case 'p': /* error on physical device */
1341 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp);
1342 if (action == 'r')
1343 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
1344 break;
1345 case 'l': /* error on logical unit */
1346 case 'm': /* message about logical unit */
1347 bus = MLY_LOGDEV_BUS(sc, me->lun);
1348 target = MLY_LOGDEV_TARGET(sc, me->lun);
1349 mly_name_device(sc, bus, target);
1350 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp);
1351 if (action == 'r')
1352 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN;
1353 break;
1354 break;
1355 case 's': /* report of sense data */
1356 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) ||
1357 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) &&
1358 (ssd->add_sense_code == 0x04) &&
1359 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02))))
1360 break; /* ignore NO_SENSE or NOT_READY in one case */
1361
1362 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp);
1363 mly_printf(sc, " sense key %d asc %02x ascq %02x\n",
1364 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual);
1365 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, "");
1366 if (action == 'r')
1367 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
1368 break;
1369 case 'e':
1370 mly_printf(sc, tp, me->target, me->lun);
1371 printf("\n");
1372 break;
1373 case 'c':
1374 mly_printf(sc, "controller %s\n", tp);
1375 break;
1376 case '?':
1377 mly_printf(sc, "%s - %d\n", tp, me->code);
1378 break;
1379 default: /* probably a 'noisy' event being ignored */
1380 break;
1381 }
1382 }
1383
1384 /********************************************************************************
1385 * Perform periodic activities.
1386 */
1387 static void
1388 mly_periodic(void *data)
1389 {
1390 struct mly_softc *sc = (struct mly_softc *)data;
1391 int bus, target;
1392
1393 debug_called(2);
1394
1395 /*
1396 * Scan devices.
1397 */
1398 for (bus = 0; bus < sc->mly_cam_channels; bus++) {
1399 if (MLY_BUS_IS_VALID(sc, bus)) {
1400 for (target = 0; target < MLY_MAX_TARGETS; target++) {
1401
1402 /* ignore the controller in this scan */
1403 if (target == sc->mly_controllerparam->initiator_id)
1404 continue;
1405
1406 /* perform device rescan? */
1407 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN)
1408 mly_rescan_btl(sc, bus, target);
1409 }
1410 }
1411 }
1412
1413 /* check for controller events */
1414 mly_check_event(sc);
1415
1416 /* reschedule ourselves */
1417 sc->mly_periodic = timeout(mly_periodic, sc, MLY_PERIODIC_INTERVAL * hz);
1418 }
1419
1420 /********************************************************************************
1421 ********************************************************************************
1422 Command Processing
1423 ********************************************************************************
1424 ********************************************************************************/
1425
1426 /********************************************************************************
1427 * Run a command and wait for it to complete.
1428 *
1429 */
1430 static int
1431 mly_immediate_command(struct mly_command *mc)
1432 {
1433 struct mly_softc *sc = mc->mc_sc;
1434 int error, s;
1435
1436 debug_called(1);
1437
1438 /* spinning at splcam is ugly, but we're only used during controller init */
1439 s = splcam();
1440 if ((error = mly_start(mc))) {
1441 splx(s);
1442 return(error);
1443 }
1444
1445 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) {
1446 /* sleep on the command */
1447 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) {
1448 tsleep(mc, PRIBIO, "mlywait", 0);
1449 }
1450 } else {
1451 /* spin and collect status while we do */
1452 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) {
1453 mly_done(mc->mc_sc);
1454 }
1455 }
1456 splx(s);
1457 return(0);
1458 }
1459
1460 /********************************************************************************
1461 * Deliver a command to the controller.
1462 *
1463 * XXX it would be good to just queue commands that we can't submit immediately
1464 * and send them later, but we probably want a wrapper for that so that
1465 * we don't hang on a failed submission for an immediate command.
1466 */
1467 static int
1468 mly_start(struct mly_command *mc)
1469 {
1470 struct mly_softc *sc = mc->mc_sc;
1471 union mly_command_packet *pkt;
1472 int s;
1473
1474 debug_called(2);
1475
1476 /*
1477 * Set the command up for delivery to the controller.
1478 */
1479 mly_map_command(mc);
1480 mc->mc_packet->generic.command_id = mc->mc_slot;
1481
1482 #ifdef MLY_DEBUG
1483 mc->mc_timestamp = time_second;
1484 #endif
1485
1486 s = splcam();
1487
1488 /*
1489 * Do we have to use the hardware mailbox?
1490 */
1491 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) {
1492 /*
1493 * Check to see if the controller is ready for us.
1494 */
1495 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) {
1496 splx(s);
1497 return(EBUSY);
1498 }
1499 mc->mc_flags |= MLY_CMD_BUSY;
1500
1501 /*
1502 * It's ready, send the command.
1503 */
1504 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys);
1505 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT);
1506
1507 } else { /* use memory-mailbox mode */
1508
1509 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index];
1510
1511 /* check to see if the next index is free yet */
1512 if (pkt->mmbox.flag != 0) {
1513 splx(s);
1514 return(EBUSY);
1515 }
1516 mc->mc_flags |= MLY_CMD_BUSY;
1517
1518 /* copy in new command */
1519 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data));
1520 /* barrier to ensure completion of previous write before we write the flag */
1521 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0,
1522 BUS_SPACE_BARRIER_WRITE);
1523 /* copy flag last */
1524 pkt->mmbox.flag = mc->mc_packet->mmbox.flag;
1525 /* barrier to ensure completion of previous write before we notify the controller */
1526 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0,
1527 BUS_SPACE_BARRIER_WRITE);
1528
1529 /* signal controller, update index */
1530 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT);
1531 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS;
1532 }
1533
1534 mly_enqueue_busy(mc);
1535 splx(s);
1536 return(0);
1537 }
1538
1539 /********************************************************************************
1540 * Pick up command status from the controller, schedule a completion event
1541 */
1542 static void
1543 mly_done(struct mly_softc *sc)
1544 {
1545 struct mly_command *mc;
1546 union mly_status_packet *sp;
1547 u_int16_t slot;
1548 int s, worked;
1549
1550 s = splcam();
1551 worked = 0;
1552
1553 /* pick up hardware-mailbox commands */
1554 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) {
1555 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox);
1556 if (slot < MLY_SLOT_MAX) {
1557 mc = &sc->mly_command[slot - MLY_SLOT_START];
1558 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2);
1559 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3);
1560 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4);
1561 mly_remove_busy(mc);
1562 mc->mc_flags &= ~MLY_CMD_BUSY;
1563 mly_enqueue_complete(mc);
1564 worked = 1;
1565 } else {
1566 /* slot 0xffff may mean "extremely bogus command" */
1567 mly_printf(sc, "got HM completion for illegal slot %u\n", slot);
1568 }
1569 /* unconditionally acknowledge status */
1570 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY);
1571 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK);
1572 }
1573
1574 /* pick up memory-mailbox commands */
1575 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) {
1576 for (;;) {
1577 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index];
1578
1579 /* check for more status */
1580 if (sp->mmbox.flag == 0)
1581 break;
1582
1583 /* get slot number */
1584 slot = sp->status.command_id;
1585 if (slot < MLY_SLOT_MAX) {
1586 mc = &sc->mly_command[slot - MLY_SLOT_START];
1587 mc->mc_status = sp->status.status;
1588 mc->mc_sense = sp->status.sense_length;
1589 mc->mc_resid = sp->status.residue;
1590 mly_remove_busy(mc);
1591 mc->mc_flags &= ~MLY_CMD_BUSY;
1592 mly_enqueue_complete(mc);
1593 worked = 1;
1594 } else {
1595 /* slot 0xffff may mean "extremely bogus command" */
1596 mly_printf(sc, "got AM completion for illegal slot %u at %d\n",
1597 slot, sc->mly_mmbox_status_index);
1598 }
1599
1600 /* clear and move to next index */
1601 sp->mmbox.flag = 0;
1602 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS;
1603 }
1604 /* acknowledge that we have collected status value(s) */
1605 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY);
1606 }
1607
1608 splx(s);
1609 if (worked) {
1610 #if __FreeBSD_version >= 500005
1611 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON)
1612 taskqueue_enqueue(taskqueue_swi_giant, &sc->mly_task_complete);
1613 else
1614 #endif
1615 mly_complete(sc, 0);
1616 }
1617 }
1618
1619 /********************************************************************************
1620 * Process completed commands
1621 */
1622 static void
1623 mly_complete(void *context, int pending)
1624 {
1625 struct mly_softc *sc = (struct mly_softc *)context;
1626 struct mly_command *mc;
1627 void (* mc_complete)(struct mly_command *mc);
1628
1629
1630 debug_called(2);
1631
1632 /*
1633 * Spin pulling commands off the completed queue and processing them.
1634 */
1635 while ((mc = mly_dequeue_complete(sc)) != NULL) {
1636
1637 /*
1638 * Free controller resources, mark command complete.
1639 *
1640 * Note that as soon as we mark the command complete, it may be freed
1641 * out from under us, so we need to save the mc_complete field in
1642 * order to later avoid dereferencing mc. (We would not expect to
1643 * have a polling/sleeping consumer with mc_complete != NULL).
1644 */
1645 mly_unmap_command(mc);
1646 mc_complete = mc->mc_complete;
1647 mc->mc_flags |= MLY_CMD_COMPLETE;
1648
1649 /*
1650 * Call completion handler or wake up sleeping consumer.
1651 */
1652 if (mc_complete != NULL) {
1653 mc_complete(mc);
1654 } else {
1655 wakeup(mc);
1656 }
1657 }
1658
1659 /*
1660 * XXX if we are deferring commands due to controller-busy status, we should
1661 * retry submitting them here.
1662 */
1663 }
1664
1665 /********************************************************************************
1666 ********************************************************************************
1667 Command Buffer Management
1668 ********************************************************************************
1669 ********************************************************************************/
1670
1671 /********************************************************************************
1672 * Allocate a command.
1673 */
1674 static int
1675 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp)
1676 {
1677 struct mly_command *mc;
1678
1679 debug_called(3);
1680
1681 if ((mc = mly_dequeue_free(sc)) == NULL)
1682 return(ENOMEM);
1683
1684 *mcp = mc;
1685 return(0);
1686 }
1687
1688 /********************************************************************************
1689 * Release a command back to the freelist.
1690 */
1691 static void
1692 mly_release_command(struct mly_command *mc)
1693 {
1694 debug_called(3);
1695
1696 /*
1697 * Fill in parts of the command that may cause confusion if
1698 * a consumer doesn't when we are later allocated.
1699 */
1700 mc->mc_data = NULL;
1701 mc->mc_flags = 0;
1702 mc->mc_complete = NULL;
1703 mc->mc_private = NULL;
1704
1705 /*
1706 * By default, we set up to overwrite the command packet with
1707 * sense information.
1708 */
1709 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys;
1710 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet);
1711
1712 mly_enqueue_free(mc);
1713 }
1714
1715 /********************************************************************************
1716 * Map helper for command allocation.
1717 */
1718 static void
1719 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1720 {
1721 struct mly_softc *sc = (struct mly_softc *)arg;
1722
1723 debug_called(1);
1724
1725 sc->mly_packetphys = segs[0].ds_addr;
1726 }
1727
1728 /********************************************************************************
1729 * Allocate and initialise command and packet structures.
1730 *
1731 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our
1732 * allocation to that number. If we don't yet know how many commands the
1733 * controller supports, allocate a very small set (suitable for initialisation
1734 * purposes only).
1735 */
1736 static int
1737 mly_alloc_commands(struct mly_softc *sc)
1738 {
1739 struct mly_command *mc;
1740 int i, ncmd;
1741
1742 if (sc->mly_controllerinfo == NULL) {
1743 ncmd = 4;
1744 } else {
1745 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands);
1746 }
1747
1748 /*
1749 * Allocate enough space for all the command packets in one chunk and
1750 * map them permanently into controller-visible space.
1751 */
1752 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet,
1753 BUS_DMA_NOWAIT, &sc->mly_packetmap)) {
1754 return(ENOMEM);
1755 }
1756 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet,
1757 ncmd * sizeof(union mly_command_packet),
1758 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0)
1759 return (ENOMEM);
1760
1761 for (i = 0; i < ncmd; i++) {
1762 mc = &sc->mly_command[i];
1763 bzero(mc, sizeof(*mc));
1764 mc->mc_sc = sc;
1765 mc->mc_slot = MLY_SLOT_START + i;
1766 mc->mc_packet = sc->mly_packet + i;
1767 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet));
1768 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap))
1769 mly_release_command(mc);
1770 }
1771 return(0);
1772 }
1773
1774 /********************************************************************************
1775 * Free all the storage held by commands.
1776 *
1777 * Must be called with all commands on the free list.
1778 */
1779 static void
1780 mly_release_commands(struct mly_softc *sc)
1781 {
1782 struct mly_command *mc;
1783
1784 /* throw away command buffer DMA maps */
1785 while (mly_alloc_command(sc, &mc) == 0)
1786 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap);
1787
1788 /* release the packet storage */
1789 if (sc->mly_packet != NULL) {
1790 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap);
1791 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap);
1792 sc->mly_packet = NULL;
1793 }
1794 }
1795
1796
1797 /********************************************************************************
1798 * Command-mapping helper function - populate this command's s/g table
1799 * with the s/g entries for its data.
1800 */
1801 static void
1802 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1803 {
1804 struct mly_command *mc = (struct mly_command *)arg;
1805 struct mly_softc *sc = mc->mc_sc;
1806 struct mly_command_generic *gen = &(mc->mc_packet->generic);
1807 struct mly_sg_entry *sg;
1808 int i, tabofs;
1809
1810 debug_called(2);
1811
1812 /* can we use the transfer structure directly? */
1813 if (nseg <= 2) {
1814 sg = &gen->transfer.direct.sg[0];
1815 gen->command_control.extended_sg_table = 0;
1816 } else {
1817 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES);
1818 sg = sc->mly_sg_table + tabofs;
1819 gen->transfer.indirect.entries[0] = nseg;
1820 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry));
1821 gen->command_control.extended_sg_table = 1;
1822 }
1823
1824 /* copy the s/g table */
1825 for (i = 0; i < nseg; i++) {
1826 sg[i].physaddr = segs[i].ds_addr;
1827 sg[i].length = segs[i].ds_len;
1828 }
1829
1830 }
1831
1832 #if 0
1833 /********************************************************************************
1834 * Command-mapping helper function - save the cdb's physical address.
1835 *
1836 * We don't support 'large' SCSI commands at this time, so this is unused.
1837 */
1838 static void
1839 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1840 {
1841 struct mly_command *mc = (struct mly_command *)arg;
1842
1843 debug_called(2);
1844
1845 /* XXX can we safely assume that a CDB will never cross a page boundary? */
1846 if ((segs[0].ds_addr % PAGE_SIZE) >
1847 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE))
1848 panic("cdb crosses page boundary");
1849
1850 /* fix up fields in the command packet */
1851 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr;
1852 }
1853 #endif
1854
1855 /********************************************************************************
1856 * Map a command into controller-visible space
1857 */
1858 static void
1859 mly_map_command(struct mly_command *mc)
1860 {
1861 struct mly_softc *sc = mc->mc_sc;
1862
1863 debug_called(2);
1864
1865 /* don't map more than once */
1866 if (mc->mc_flags & MLY_CMD_MAPPED)
1867 return;
1868
1869 /* does the command have a data buffer? */
1870 if (mc->mc_data != NULL) {
1871 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length,
1872 mly_map_command_sg, mc, 0);
1873
1874 if (mc->mc_flags & MLY_CMD_DATAIN)
1875 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD);
1876 if (mc->mc_flags & MLY_CMD_DATAOUT)
1877 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE);
1878 }
1879 mc->mc_flags |= MLY_CMD_MAPPED;
1880 }
1881
1882 /********************************************************************************
1883 * Unmap a command from controller-visible space
1884 */
1885 static void
1886 mly_unmap_command(struct mly_command *mc)
1887 {
1888 struct mly_softc *sc = mc->mc_sc;
1889
1890 debug_called(2);
1891
1892 if (!(mc->mc_flags & MLY_CMD_MAPPED))
1893 return;
1894
1895 /* does the command have a data buffer? */
1896 if (mc->mc_data != NULL) {
1897 if (mc->mc_flags & MLY_CMD_DATAIN)
1898 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD);
1899 if (mc->mc_flags & MLY_CMD_DATAOUT)
1900 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE);
1901
1902 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap);
1903 }
1904 mc->mc_flags &= ~MLY_CMD_MAPPED;
1905 }
1906
1907
1908 /********************************************************************************
1909 ********************************************************************************
1910 CAM interface
1911 ********************************************************************************
1912 ********************************************************************************/
1913
1914 /********************************************************************************
1915 * Attach the physical and virtual SCSI busses to CAM.
1916 *
1917 * Physical bus numbering starts from 0, virtual bus numbering from one greater
1918 * than the highest physical bus. Physical busses are only registered if
1919 * the kernel environment variable "hw.mly.register_physical_channels" is set.
1920 *
1921 * When we refer to a "bus", we are referring to the bus number registered with
1922 * the SIM, wheras a "channel" is a channel number given to the adapter. In order
1923 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used
1924 * interchangeably.
1925 */
1926 static int
1927 mly_cam_attach(struct mly_softc *sc)
1928 {
1929 struct cam_devq *devq;
1930 int chn, i;
1931
1932 debug_called(1);
1933
1934 /*
1935 * Allocate a devq for all our channels combined.
1936 */
1937 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) {
1938 mly_printf(sc, "can't allocate CAM SIM queue\n");
1939 return(ENOMEM);
1940 }
1941
1942 /*
1943 * If physical channel registration has been requested, register these first.
1944 * Note that we enable tagged command queueing for physical channels.
1945 */
1946 if (testenv("hw.mly.register_physical_channels")) {
1947 chn = 0;
1948 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) {
1949
1950 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc,
1951 device_get_unit(sc->mly_dev),
1952 sc->mly_controllerinfo->maximum_parallel_commands,
1953 1, devq)) == NULL) {
1954 return(ENOMEM);
1955 }
1956 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) {
1957 mly_printf(sc, "CAM XPT phsyical channel registration failed\n");
1958 return(ENXIO);
1959 }
1960 debug(1, "registered physical channel %d", chn);
1961 }
1962 }
1963
1964 /*
1965 * Register our virtual channels, with bus numbers matching channel numbers.
1966 */
1967 chn = sc->mly_controllerinfo->physical_channels_present;
1968 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) {
1969 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc,
1970 device_get_unit(sc->mly_dev),
1971 sc->mly_controllerinfo->maximum_parallel_commands,
1972 0, devq)) == NULL) {
1973 return(ENOMEM);
1974 }
1975 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) {
1976 mly_printf(sc, "CAM XPT virtual channel registration failed\n");
1977 return(ENXIO);
1978 }
1979 debug(1, "registered virtual channel %d", chn);
1980 }
1981
1982 /*
1983 * This is the total number of channels that (might have been) registered with
1984 * CAM. Some may not have been; check the mly_cam_sim array to be certain.
1985 */
1986 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present +
1987 sc->mly_controllerinfo->virtual_channels_present;
1988
1989 return(0);
1990 }
1991
1992 /********************************************************************************
1993 * Detach from CAM
1994 */
1995 static void
1996 mly_cam_detach(struct mly_softc *sc)
1997 {
1998 int i;
1999
2000 debug_called(1);
2001
2002 for (i = 0; i < sc->mly_cam_channels; i++) {
2003 if (sc->mly_cam_sim[i] != NULL) {
2004 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i]));
2005 cam_sim_free(sc->mly_cam_sim[i], 0);
2006 }
2007 }
2008 if (sc->mly_cam_devq != NULL)
2009 cam_simq_free(sc->mly_cam_devq);
2010 }
2011
2012 /************************************************************************
2013 * Rescan a device.
2014 */
2015 static void
2016 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target)
2017 {
2018 union ccb *ccb;
2019
2020 debug_called(1);
2021
2022 if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO)) == NULL) {
2023 mly_printf(sc, "rescan failed (can't allocate CCB)\n");
2024 return;
2025 }
2026
2027 if (xpt_create_path(&sc->mly_cam_path, xpt_periph,
2028 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) {
2029 mly_printf(sc, "rescan failed (can't create path)\n");
2030 free(ccb, M_TEMP);
2031 return;
2032 }
2033 xpt_setup_ccb(&ccb->ccb_h, sc->mly_cam_path, 5/*priority (low)*/);
2034 ccb->ccb_h.func_code = XPT_SCAN_LUN;
2035 ccb->ccb_h.cbfcnp = mly_cam_rescan_callback;
2036 ccb->crcn.flags = CAM_FLAG_NONE;
2037 debug(1, "rescan target %d:%d", bus, target);
2038 xpt_action(ccb);
2039 }
2040
2041 static void
2042 mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
2043 {
2044 free(ccb, M_TEMP);
2045 }
2046
2047 /********************************************************************************
2048 * Handle an action requested by CAM
2049 */
2050 static void
2051 mly_cam_action(struct cam_sim *sim, union ccb *ccb)
2052 {
2053 struct mly_softc *sc = cam_sim_softc(sim);
2054
2055 debug_called(2);
2056
2057 switch (ccb->ccb_h.func_code) {
2058
2059 /* perform SCSI I/O */
2060 case XPT_SCSI_IO:
2061 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio))
2062 return;
2063 break;
2064
2065 /* perform geometry calculations */
2066 case XPT_CALC_GEOMETRY:
2067 {
2068 struct ccb_calc_geometry *ccg = &ccb->ccg;
2069 u_int32_t secs_per_cylinder;
2070
2071 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2072
2073 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) {
2074 ccg->heads = 255;
2075 ccg->secs_per_track = 63;
2076 } else { /* MLY_BIOSGEOM_2G */
2077 ccg->heads = 128;
2078 ccg->secs_per_track = 32;
2079 }
2080 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2081 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2082 ccb->ccb_h.status = CAM_REQ_CMP;
2083 break;
2084 }
2085
2086 /* handle path attribute inquiry */
2087 case XPT_PATH_INQ:
2088 {
2089 struct ccb_pathinq *cpi = &ccb->cpi;
2090
2091 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2092
2093 cpi->version_num = 1;
2094 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */
2095 cpi->target_sprt = 0;
2096 cpi->hba_misc = 0;
2097 cpi->max_target = MLY_MAX_TARGETS - 1;
2098 cpi->max_lun = MLY_MAX_LUNS - 1;
2099 cpi->initiator_id = sc->mly_controllerparam->initiator_id;
2100 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2101 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN);
2102 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2103 cpi->unit_number = cam_sim_unit(sim);
2104 cpi->bus_id = cam_sim_bus(sim);
2105 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
2106 ccb->ccb_h.status = CAM_REQ_CMP;
2107 break;
2108 }
2109
2110 case XPT_GET_TRAN_SETTINGS:
2111 {
2112 struct ccb_trans_settings *cts = &ccb->cts;
2113 int bus, target;
2114
2115 bus = cam_sim_bus(sim);
2116 target = cts->ccb_h.target_id;
2117 /* XXX validate bus/target? */
2118
2119 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
2120 cts->valid = 0;
2121
2122 /* logical device? */
2123 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) {
2124 /* nothing special for these */
2125
2126 /* physical device? */
2127 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) {
2128 /* allow CAM to try tagged transactions */
2129 cts->flags |= CCB_TRANS_TAG_ENB;
2130 cts->valid |= CCB_TRANS_TQ_VALID;
2131
2132 /* convert speed (MHz) to usec */
2133 if (sc->mly_btl[bus][target].mb_speed == 0) {
2134 cts->sync_period = 1000000 / 5;
2135 } else {
2136 cts->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed;
2137 }
2138
2139 /* convert bus width to CAM internal encoding */
2140 switch (sc->mly_btl[bus][target].mb_width) {
2141 case 32:
2142 cts->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
2143 break;
2144 case 16:
2145 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2146 break;
2147 case 8:
2148 default:
2149 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2150 break;
2151 }
2152 cts->valid |= CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_BUS_WIDTH_VALID;
2153
2154 /* not a device, bail out */
2155 } else {
2156 cts->ccb_h.status = CAM_REQ_CMP_ERR;
2157 break;
2158 }
2159
2160 /* disconnect always OK */
2161 cts->flags |= CCB_TRANS_DISC_ENB;
2162 cts->valid |= CCB_TRANS_DISC_VALID;
2163
2164 cts->ccb_h.status = CAM_REQ_CMP;
2165 break;
2166 }
2167
2168 default: /* we can't do this */
2169 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
2170 ccb->ccb_h.status = CAM_REQ_INVALID;
2171 break;
2172 }
2173
2174 xpt_done(ccb);
2175 }
2176
2177 /********************************************************************************
2178 * Handle an I/O operation requested by CAM
2179 */
2180 static int
2181 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
2182 {
2183 struct mly_softc *sc = cam_sim_softc(sim);
2184 struct mly_command *mc;
2185 struct mly_command_scsi_small *ss;
2186 int bus, target;
2187 int error;
2188 int s;
2189
2190 bus = cam_sim_bus(sim);
2191 target = csio->ccb_h.target_id;
2192
2193 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
2194
2195 /* validate bus number */
2196 if (!MLY_BUS_IS_VALID(sc, bus)) {
2197 debug(0, " invalid bus %d", bus);
2198 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2199 }
2200
2201 /* check for I/O attempt to a protected device */
2202 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) {
2203 debug(2, " device protected");
2204 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2205 }
2206
2207 /* check for I/O attempt to nonexistent device */
2208 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) {
2209 debug(2, " device %d:%d does not exist", bus, target);
2210 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2211 }
2212
2213 /* XXX increase if/when we support large SCSI commands */
2214 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) {
2215 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB);
2216 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2217 }
2218
2219 /* check that the CDB pointer is not to a physical address */
2220 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
2221 debug(0, " CDB pointer is to physical address");
2222 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2223 }
2224
2225 /* if there is data transfer, it must be to/from a virtual address */
2226 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
2227 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */
2228 debug(0, " data pointer is to physical address");
2229 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2230 }
2231 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */
2232 debug(0, " data has premature s/g setup");
2233 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2234 }
2235 }
2236
2237 /* abandon aborted ccbs or those that have failed validation */
2238 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
2239 debug(2, "abandoning CCB due to abort/validation failure");
2240 return(EINVAL);
2241 }
2242
2243 /*
2244 * Get a command, or push the ccb back to CAM and freeze the queue.
2245 */
2246 if ((error = mly_alloc_command(sc, &mc))) {
2247 s = splcam();
2248 xpt_freeze_simq(sim, 1);
2249 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2250 sc->mly_qfrzn_cnt++;
2251 splx(s);
2252 return(error);
2253 }
2254
2255 /* build the command */
2256 mc->mc_data = csio->data_ptr;
2257 mc->mc_length = csio->dxfer_len;
2258 mc->mc_complete = mly_cam_complete;
2259 mc->mc_private = csio;
2260
2261 /* save the bus number in the ccb for later recovery XXX should be a better way */
2262 csio->ccb_h.sim_priv.entries[0].field = bus;
2263
2264 /* build the packet for the controller */
2265 ss = &mc->mc_packet->scsi_small;
2266 ss->opcode = MDACMD_SCSI;
2267 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT)
2268 ss->command_control.disable_disconnect = 1;
2269 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
2270 ss->command_control.data_direction = MLY_CCB_WRITE;
2271 ss->data_size = csio->dxfer_len;
2272 ss->addr.phys.lun = csio->ccb_h.target_lun;
2273 ss->addr.phys.target = csio->ccb_h.target_id;
2274 ss->addr.phys.channel = bus;
2275 if (csio->ccb_h.timeout < (60 * 1000)) {
2276 ss->timeout.value = csio->ccb_h.timeout / 1000;
2277 ss->timeout.scale = MLY_TIMEOUT_SECONDS;
2278 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) {
2279 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000);
2280 ss->timeout.scale = MLY_TIMEOUT_MINUTES;
2281 } else {
2282 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */
2283 ss->timeout.scale = MLY_TIMEOUT_HOURS;
2284 }
2285 ss->maximum_sense_size = csio->sense_len;
2286 ss->cdb_length = csio->cdb_len;
2287 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
2288 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len);
2289 } else {
2290 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len);
2291 }
2292
2293 /* give the command to the controller */
2294 if ((error = mly_start(mc))) {
2295 s = splcam();
2296 xpt_freeze_simq(sim, 1);
2297 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2298 sc->mly_qfrzn_cnt++;
2299 splx(s);
2300 return(error);
2301 }
2302
2303 return(0);
2304 }
2305
2306 /********************************************************************************
2307 * Check for possibly-completed commands.
2308 */
2309 static void
2310 mly_cam_poll(struct cam_sim *sim)
2311 {
2312 struct mly_softc *sc = cam_sim_softc(sim);
2313
2314 debug_called(2);
2315
2316 mly_done(sc);
2317 }
2318
2319 /********************************************************************************
2320 * Handle completion of a command - pass results back through the CCB
2321 */
2322 static void
2323 mly_cam_complete(struct mly_command *mc)
2324 {
2325 struct mly_softc *sc = mc->mc_sc;
2326 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private;
2327 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr;
2328 struct mly_btl *btl;
2329 u_int8_t cmd;
2330 int bus, target;
2331 int s;
2332
2333 debug_called(2);
2334
2335 csio->scsi_status = mc->mc_status;
2336 switch(mc->mc_status) {
2337 case SCSI_STATUS_OK:
2338 /*
2339 * In order to report logical device type and status, we overwrite
2340 * the result of the INQUIRY command to logical devices.
2341 */
2342 bus = csio->ccb_h.sim_priv.entries[0].field;
2343 target = csio->ccb_h.target_id;
2344 /* XXX validate bus/target? */
2345 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) {
2346 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
2347 cmd = *csio->cdb_io.cdb_ptr;
2348 } else {
2349 cmd = csio->cdb_io.cdb_bytes[0];
2350 }
2351 if (cmd == INQUIRY) {
2352 btl = &sc->mly_btl[bus][target];
2353 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8);
2354 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16);
2355 padstr(inq->revision, "", 4);
2356 }
2357 }
2358
2359 debug(2, "SCSI_STATUS_OK");
2360 csio->ccb_h.status = CAM_REQ_CMP;
2361 break;
2362
2363 case SCSI_STATUS_CHECK_COND:
2364 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid);
2365 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
2366 bzero(&csio->sense_data, SSD_FULL_SIZE);
2367 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense);
2368 csio->sense_len = mc->mc_sense;
2369 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
2370 csio->resid = mc->mc_resid; /* XXX this is a signed value... */
2371 break;
2372
2373 case SCSI_STATUS_BUSY:
2374 debug(1, "SCSI_STATUS_BUSY");
2375 csio->ccb_h.status = CAM_SCSI_BUSY;
2376 break;
2377
2378 default:
2379 debug(1, "unknown status 0x%x", csio->scsi_status);
2380 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2381 break;
2382 }
2383
2384 s = splcam();
2385 if (sc->mly_qfrzn_cnt) {
2386 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
2387 sc->mly_qfrzn_cnt--;
2388 }
2389 splx(s);
2390
2391 xpt_done((union ccb *)csio);
2392 mly_release_command(mc);
2393 }
2394
2395 /********************************************************************************
2396 * Find a peripheral attahed at (bus),(target)
2397 */
2398 static struct cam_periph *
2399 mly_find_periph(struct mly_softc *sc, int bus, int target)
2400 {
2401 struct cam_periph *periph;
2402 struct cam_path *path;
2403 int status;
2404
2405 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0);
2406 if (status == CAM_REQ_CMP) {
2407 periph = cam_periph_find(path, NULL);
2408 xpt_free_path(path);
2409 } else {
2410 periph = NULL;
2411 }
2412 return(periph);
2413 }
2414
2415 /********************************************************************************
2416 * Name the device at (bus)(target)
2417 */
2418 static int
2419 mly_name_device(struct mly_softc *sc, int bus, int target)
2420 {
2421 struct cam_periph *periph;
2422
2423 if ((periph = mly_find_periph(sc, bus, target)) != NULL) {
2424 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number);
2425 return(0);
2426 }
2427 sc->mly_btl[bus][target].mb_name[0] = 0;
2428 return(ENOENT);
2429 }
2430
2431 /********************************************************************************
2432 ********************************************************************************
2433 Hardware Control
2434 ********************************************************************************
2435 ********************************************************************************/
2436
2437 /********************************************************************************
2438 * Handshake with the firmware while the card is being initialised.
2439 */
2440 static int
2441 mly_fwhandshake(struct mly_softc *sc)
2442 {
2443 u_int8_t error, param0, param1;
2444 int spinup = 0;
2445
2446 debug_called(1);
2447
2448 /* set HM_STSACK and let the firmware initialise */
2449 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK);
2450 DELAY(1000); /* too short? */
2451
2452 /* if HM_STSACK is still true, the controller is initialising */
2453 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK))
2454 return(0);
2455 mly_printf(sc, "controller initialisation started\n");
2456
2457 /* spin waiting for initialisation to finish, or for a message to be delivered */
2458 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) {
2459 /* check for a message */
2460 if (MLY_ERROR_VALID(sc)) {
2461 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY;
2462 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox);
2463 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1);
2464
2465 switch(error) {
2466 case MLY_MSG_SPINUP:
2467 if (!spinup) {
2468 mly_printf(sc, "drive spinup in progress\n");
2469 spinup = 1; /* only print this once (should print drive being spun?) */
2470 }
2471 break;
2472 case MLY_MSG_RACE_RECOVERY_FAIL:
2473 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n");
2474 break;
2475 case MLY_MSG_RACE_IN_PROGRESS:
2476 mly_printf(sc, "mirror race recovery in progress\n");
2477 break;
2478 case MLY_MSG_RACE_ON_CRITICAL:
2479 mly_printf(sc, "mirror race recovery on a critical drive\n");
2480 break;
2481 case MLY_MSG_PARITY_ERROR:
2482 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n");
2483 return(ENXIO);
2484 default:
2485 mly_printf(sc, "unknown initialisation code 0x%x\n", error);
2486 }
2487 }
2488 }
2489 return(0);
2490 }
2491
2492 /********************************************************************************
2493 ********************************************************************************
2494 Debugging and Diagnostics
2495 ********************************************************************************
2496 ********************************************************************************/
2497
2498 /********************************************************************************
2499 * Print some information about the controller.
2500 */
2501 static void
2502 mly_describe_controller(struct mly_softc *sc)
2503 {
2504 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo;
2505
2506 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n",
2507 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "",
2508 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */
2509 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day,
2510 mi->memory_size);
2511
2512 if (bootverbose) {
2513 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n",
2514 mly_describe_code(mly_table_oemname, mi->oem_information),
2515 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type,
2516 mi->interface_speed, mi->interface_width, mi->interface_name);
2517 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n",
2518 mi->memory_size, mi->memory_speed, mi->memory_width,
2519 mly_describe_code(mly_table_memorytype, mi->memory_type),
2520 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "",
2521 mi->cache_size);
2522 mly_printf(sc, "CPU: %s @ %dMHZ\n",
2523 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed);
2524 if (mi->l2cache_size != 0)
2525 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size);
2526 if (mi->exmemory_size != 0)
2527 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n",
2528 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width,
2529 mly_describe_code(mly_table_memorytype, mi->exmemory_type),
2530 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": "");
2531 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed");
2532 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n",
2533 mi->maximum_block_count, mi->maximum_sg_entries);
2534 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n",
2535 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline);
2536 mly_printf(sc, "physical devices present %d\n",
2537 mi->physical_devices_present);
2538 mly_printf(sc, "physical disks present/offline %d/%d\n",
2539 mi->physical_disks_present, mi->physical_disks_offline);
2540 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n",
2541 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s",
2542 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s",
2543 mi->virtual_channels_possible);
2544 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands);
2545 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n",
2546 mi->flash_size, mi->flash_age, mi->flash_maximum_age);
2547 }
2548 }
2549
2550 #ifdef MLY_DEBUG
2551 /********************************************************************************
2552 * Print some controller state
2553 */
2554 static void
2555 mly_printstate(struct mly_softc *sc)
2556 {
2557 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n",
2558 MLY_GET_REG(sc, sc->mly_idbr),
2559 MLY_GET_REG(sc, sc->mly_odbr),
2560 MLY_GET_REG(sc, sc->mly_error_status),
2561 sc->mly_idbr,
2562 sc->mly_odbr,
2563 sc->mly_error_status);
2564 mly_printf(sc, "IMASK %02x ISTATUS %02x\n",
2565 MLY_GET_REG(sc, sc->mly_interrupt_mask),
2566 MLY_GET_REG(sc, sc->mly_interrupt_status));
2567 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n",
2568 MLY_GET_REG(sc, sc->mly_command_mailbox),
2569 MLY_GET_REG(sc, sc->mly_command_mailbox + 1),
2570 MLY_GET_REG(sc, sc->mly_command_mailbox + 2),
2571 MLY_GET_REG(sc, sc->mly_command_mailbox + 3),
2572 MLY_GET_REG(sc, sc->mly_command_mailbox + 4),
2573 MLY_GET_REG(sc, sc->mly_command_mailbox + 5),
2574 MLY_GET_REG(sc, sc->mly_command_mailbox + 6),
2575 MLY_GET_REG(sc, sc->mly_command_mailbox + 7));
2576 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n",
2577 MLY_GET_REG(sc, sc->mly_status_mailbox),
2578 MLY_GET_REG(sc, sc->mly_status_mailbox + 1),
2579 MLY_GET_REG(sc, sc->mly_status_mailbox + 2),
2580 MLY_GET_REG(sc, sc->mly_status_mailbox + 3),
2581 MLY_GET_REG(sc, sc->mly_status_mailbox + 4),
2582 MLY_GET_REG(sc, sc->mly_status_mailbox + 5),
2583 MLY_GET_REG(sc, sc->mly_status_mailbox + 6),
2584 MLY_GET_REG(sc, sc->mly_status_mailbox + 7));
2585 mly_printf(sc, " %04x %08x\n",
2586 MLY_GET_REG2(sc, sc->mly_status_mailbox),
2587 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4));
2588 }
2589
2590 struct mly_softc *mly_softc0 = NULL;
2591 void
2592 mly_printstate0(void)
2593 {
2594 if (mly_softc0 != NULL)
2595 mly_printstate(mly_softc0);
2596 }
2597
2598 /********************************************************************************
2599 * Print a command
2600 */
2601 static void
2602 mly_print_command(struct mly_command *mc)
2603 {
2604 struct mly_softc *sc = mc->mc_sc;
2605
2606 mly_printf(sc, "COMMAND @ %p\n", mc);
2607 mly_printf(sc, " slot %d\n", mc->mc_slot);
2608 mly_printf(sc, " status 0x%x\n", mc->mc_status);
2609 mly_printf(sc, " sense len %d\n", mc->mc_sense);
2610 mly_printf(sc, " resid %d\n", mc->mc_resid);
2611 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys);
2612 if (mc->mc_packet != NULL)
2613 mly_print_packet(mc);
2614 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length);
2615 mly_printf(sc, " flags %b\n", mc->mc_flags, "\2\1busy\2complete\3slotted\4mapped\5datain\6dataout\n");
2616 mly_printf(sc, " complete %p\n", mc->mc_complete);
2617 mly_printf(sc, " private %p\n", mc->mc_private);
2618 }
2619
2620 /********************************************************************************
2621 * Print a command packet
2622 */
2623 static void
2624 mly_print_packet(struct mly_command *mc)
2625 {
2626 struct mly_softc *sc = mc->mc_sc;
2627 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet;
2628 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet;
2629 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet;
2630 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet;
2631 int transfer;
2632
2633 mly_printf(sc, " command_id %d\n", ge->command_id);
2634 mly_printf(sc, " opcode %d\n", ge->opcode);
2635 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n",
2636 ge->command_control.force_unit_access,
2637 ge->command_control.disable_page_out,
2638 ge->command_control.extended_sg_table,
2639 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ",
2640 ge->command_control.no_auto_sense,
2641 ge->command_control.disable_disconnect);
2642 mly_printf(sc, " data_size %d\n", ge->data_size);
2643 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address);
2644 mly_printf(sc, " lun %d\n", ge->addr.phys.lun);
2645 mly_printf(sc, " target %d\n", ge->addr.phys.target);
2646 mly_printf(sc, " channel %d\n", ge->addr.phys.channel);
2647 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev);
2648 mly_printf(sc, " controller %d\n", ge->addr.phys.controller);
2649 mly_printf(sc, " timeout %d %s\n",
2650 ge->timeout.value,
2651 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" :
2652 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours"));
2653 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size);
2654 switch(ge->opcode) {
2655 case MDACMD_SCSIPT:
2656 case MDACMD_SCSI:
2657 mly_printf(sc, " cdb length %d\n", ss->cdb_length);
2658 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " ");
2659 transfer = 1;
2660 break;
2661 case MDACMD_SCSILC:
2662 case MDACMD_SCSILCPT:
2663 mly_printf(sc, " cdb length %d\n", sl->cdb_length);
2664 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr);
2665 transfer = 1;
2666 break;
2667 case MDACMD_IOCTL:
2668 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl);
2669 switch(io->sub_ioctl) {
2670 case MDACIOCTL_SETMEMORYMAILBOX:
2671 mly_printf(sc, " health_buffer_size %d\n",
2672 io->param.setmemorymailbox.health_buffer_size);
2673 mly_printf(sc, " health_buffer_phys 0x%llx\n",
2674 io->param.setmemorymailbox.health_buffer_physaddr);
2675 mly_printf(sc, " command_mailbox 0x%llx\n",
2676 io->param.setmemorymailbox.command_mailbox_physaddr);
2677 mly_printf(sc, " status_mailbox 0x%llx\n",
2678 io->param.setmemorymailbox.status_mailbox_physaddr);
2679 transfer = 0;
2680 break;
2681
2682 case MDACIOCTL_SETREALTIMECLOCK:
2683 case MDACIOCTL_GETHEALTHSTATUS:
2684 case MDACIOCTL_GETCONTROLLERINFO:
2685 case MDACIOCTL_GETLOGDEVINFOVALID:
2686 case MDACIOCTL_GETPHYSDEVINFOVALID:
2687 case MDACIOCTL_GETPHYSDEVSTATISTICS:
2688 case MDACIOCTL_GETLOGDEVSTATISTICS:
2689 case MDACIOCTL_GETCONTROLLERSTATISTICS:
2690 case MDACIOCTL_GETBDT_FOR_SYSDRIVE:
2691 case MDACIOCTL_CREATENEWCONF:
2692 case MDACIOCTL_ADDNEWCONF:
2693 case MDACIOCTL_GETDEVCONFINFO:
2694 case MDACIOCTL_GETFREESPACELIST:
2695 case MDACIOCTL_MORE:
2696 case MDACIOCTL_SETPHYSDEVPARAMETER:
2697 case MDACIOCTL_GETPHYSDEVPARAMETER:
2698 case MDACIOCTL_GETLOGDEVPARAMETER:
2699 case MDACIOCTL_SETLOGDEVPARAMETER:
2700 mly_printf(sc, " param %10D\n", io->param.data.param, " ");
2701 transfer = 1;
2702 break;
2703
2704 case MDACIOCTL_GETEVENT:
2705 mly_printf(sc, " event %d\n",
2706 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16));
2707 transfer = 1;
2708 break;
2709
2710 case MDACIOCTL_SETRAIDDEVSTATE:
2711 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state);
2712 transfer = 0;
2713 break;
2714
2715 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV:
2716 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device);
2717 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller);
2718 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel);
2719 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target);
2720 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun);
2721 transfer = 0;
2722 break;
2723
2724 case MDACIOCTL_GETGROUPCONFINFO:
2725 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group);
2726 transfer = 1;
2727 break;
2728
2729 case MDACIOCTL_GET_SUBSYSTEM_DATA:
2730 case MDACIOCTL_SET_SUBSYSTEM_DATA:
2731 case MDACIOCTL_STARTDISOCVERY:
2732 case MDACIOCTL_INITPHYSDEVSTART:
2733 case MDACIOCTL_INITPHYSDEVSTOP:
2734 case MDACIOCTL_INITRAIDDEVSTART:
2735 case MDACIOCTL_INITRAIDDEVSTOP:
2736 case MDACIOCTL_REBUILDRAIDDEVSTART:
2737 case MDACIOCTL_REBUILDRAIDDEVSTOP:
2738 case MDACIOCTL_MAKECONSISTENTDATASTART:
2739 case MDACIOCTL_MAKECONSISTENTDATASTOP:
2740 case MDACIOCTL_CONSISTENCYCHECKSTART:
2741 case MDACIOCTL_CONSISTENCYCHECKSTOP:
2742 case MDACIOCTL_RESETDEVICE:
2743 case MDACIOCTL_FLUSHDEVICEDATA:
2744 case MDACIOCTL_PAUSEDEVICE:
2745 case MDACIOCTL_UNPAUSEDEVICE:
2746 case MDACIOCTL_LOCATEDEVICE:
2747 case MDACIOCTL_SETMASTERSLAVEMODE:
2748 case MDACIOCTL_DELETERAIDDEV:
2749 case MDACIOCTL_REPLACEINTERNALDEV:
2750 case MDACIOCTL_CLEARCONF:
2751 case MDACIOCTL_GETCONTROLLERPARAMETER:
2752 case MDACIOCTL_SETCONTRLLERPARAMETER:
2753 case MDACIOCTL_CLEARCONFSUSPMODE:
2754 case MDACIOCTL_STOREIMAGE:
2755 case MDACIOCTL_READIMAGE:
2756 case MDACIOCTL_FLASHIMAGES:
2757 case MDACIOCTL_RENAMERAIDDEV:
2758 default: /* no idea what to print */
2759 transfer = 0;
2760 break;
2761 }
2762 break;
2763
2764 case MDACMD_IOCTLCHECK:
2765 case MDACMD_MEMCOPY:
2766 default:
2767 transfer = 0;
2768 break; /* print nothing */
2769 }
2770 if (transfer) {
2771 if (ge->command_control.extended_sg_table) {
2772 mly_printf(sc, " sg table 0x%llx/%d\n",
2773 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]);
2774 } else {
2775 mly_printf(sc, " 0000 0x%llx/%lld\n",
2776 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length);
2777 mly_printf(sc, " 0001 0x%llx/%lld\n",
2778 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length);
2779 }
2780 }
2781 }
2782
2783 /********************************************************************************
2784 * Panic in a slightly informative fashion
2785 */
2786 static void
2787 mly_panic(struct mly_softc *sc, char *reason)
2788 {
2789 mly_printstate(sc);
2790 panic(reason);
2791 }
2792
2793 /********************************************************************************
2794 * Print queue statistics, callable from DDB.
2795 */
2796 void
2797 mly_print_controller(int controller)
2798 {
2799 struct mly_softc *sc;
2800
2801 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) {
2802 printf("mly: controller %d invalid\n", controller);
2803 } else {
2804 device_printf(sc->mly_dev, "queue curr max\n");
2805 device_printf(sc->mly_dev, "free %04d/%04d\n",
2806 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max);
2807 device_printf(sc->mly_dev, "busy %04d/%04d\n",
2808 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max);
2809 device_printf(sc->mly_dev, "complete %04d/%04d\n",
2810 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max);
2811 }
2812 }
2813 #endif
2814
2815
2816 /********************************************************************************
2817 ********************************************************************************
2818 Control device interface
2819 ********************************************************************************
2820 ********************************************************************************/
2821
2822 /********************************************************************************
2823 * Accept an open operation on the control device.
2824 */
2825 static int
2826 mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td)
2827 {
2828 int unit = minor(dev);
2829 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit);
2830
2831 sc->mly_state |= MLY_STATE_OPEN;
2832 return(0);
2833 }
2834
2835 /********************************************************************************
2836 * Accept the last close on the control device.
2837 */
2838 static int
2839 mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td)
2840 {
2841 int unit = minor(dev);
2842 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit);
2843
2844 sc->mly_state &= ~MLY_STATE_OPEN;
2845 return (0);
2846 }
2847
2848 /********************************************************************************
2849 * Handle controller-specific control operations.
2850 */
2851 static int
2852 mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr,
2853 int32_t flag, struct thread *td)
2854 {
2855 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1;
2856 struct mly_user_command *uc = (struct mly_user_command *)addr;
2857 struct mly_user_health *uh = (struct mly_user_health *)addr;
2858
2859 switch(cmd) {
2860 case MLYIO_COMMAND:
2861 return(mly_user_command(sc, uc));
2862 case MLYIO_HEALTH:
2863 return(mly_user_health(sc, uh));
2864 default:
2865 return(ENOIOCTL);
2866 }
2867 }
2868
2869 /********************************************************************************
2870 * Execute a command passed in from userspace.
2871 *
2872 * The control structure contains the actual command for the controller, as well
2873 * as the user-space data pointer and data size, and an optional sense buffer
2874 * size/pointer. On completion, the data size is adjusted to the command
2875 * residual, and the sense buffer size to the size of the returned sense data.
2876 *
2877 */
2878 static int
2879 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc)
2880 {
2881 struct mly_command *mc;
2882 int error, s;
2883
2884 /* allocate a command */
2885 if (mly_alloc_command(sc, &mc)) {
2886 error = ENOMEM;
2887 goto out; /* XXX Linux version will wait for a command */
2888 }
2889
2890 /* handle data size/direction */
2891 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength;
2892 if (mc->mc_length > 0) {
2893 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) {
2894 error = ENOMEM;
2895 goto out;
2896 }
2897 }
2898 if (uc->DataTransferLength > 0) {
2899 mc->mc_flags |= MLY_CMD_DATAIN;
2900 bzero(mc->mc_data, mc->mc_length);
2901 }
2902 if (uc->DataTransferLength < 0) {
2903 mc->mc_flags |= MLY_CMD_DATAOUT;
2904 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0)
2905 goto out;
2906 }
2907
2908 /* copy the controller command */
2909 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox));
2910
2911 /* clear command completion handler so that we get woken up */
2912 mc->mc_complete = NULL;
2913
2914 /* execute the command */
2915 if ((error = mly_start(mc)) != 0)
2916 goto out;
2917 s = splcam();
2918 while (!(mc->mc_flags & MLY_CMD_COMPLETE))
2919 tsleep(mc, PRIBIO, "mlyioctl", 0);
2920 splx(s);
2921
2922 /* return the data to userspace */
2923 if (uc->DataTransferLength > 0)
2924 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0)
2925 goto out;
2926
2927 /* return the sense buffer to userspace */
2928 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) {
2929 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer,
2930 min(uc->RequestSenseLength, mc->mc_sense))) != 0)
2931 goto out;
2932 }
2933
2934 /* return command results to userspace (caller will copy out) */
2935 uc->DataTransferLength = mc->mc_resid;
2936 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense);
2937 uc->CommandStatus = mc->mc_status;
2938 error = 0;
2939
2940 out:
2941 if (mc->mc_data != NULL)
2942 free(mc->mc_data, M_DEVBUF);
2943 if (mc != NULL)
2944 mly_release_command(mc);
2945 return(error);
2946 }
2947
2948 /********************************************************************************
2949 * Return health status to userspace. If the health change index in the user
2950 * structure does not match that currently exported by the controller, we
2951 * return the current status immediately. Otherwise, we block until either
2952 * interrupted or new status is delivered.
2953 */
2954 static int
2955 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh)
2956 {
2957 struct mly_health_status mh;
2958 int error, s;
2959
2960 /* fetch the current health status from userspace */
2961 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0)
2962 return(error);
2963
2964 /* spin waiting for a status update */
2965 s = splcam();
2966 error = EWOULDBLOCK;
2967 while ((error != 0) && (sc->mly_event_change == mh.change_counter))
2968 error = tsleep(&sc->mly_event_change, PRIBIO | PCATCH, "mlyhealth", 0);
2969 splx(s);
2970
2971 /* copy the controller's health status buffer out (there is a race here if it changes again) */
2972 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer,
2973 sizeof(uh->HealthStatusBuffer));
2974 return(error);
2975 }
2976
2977 static int
2978 mly_timeout(struct mly_softc *sc)
2979 {
2980 struct mly_command *mc;
2981 int deadline;
2982
2983 deadline = time_second - MLY_CMD_TIMEOUT;
2984 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) {
2985 if ((mc->mc_timestamp < deadline)) {
2986 device_printf(sc->mly_dev,
2987 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc,
2988 (int)(time_second - mc->mc_timestamp));
2989 }
2990 }
2991
2992 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz);
2993
2994 return (0);
2995 }
Cache object: 35acf0534bf9e00b2adfca21f0c16a92
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