2 * Copyright (c) 2000, 2001 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/malloc.h>
33 #include <sys/kernel.h>
36 #include <sys/ctype.h>
37 #include <sys/ioccom.h>
40 #include <machine/bus.h>
41 #include <machine/resource.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>
52 #include <dev/pci/pcireg.h>
53 #include <dev/pci/pcivar.h>
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>
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);
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);
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);
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);
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);
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_action(struct cam_sim *sim, union ccb *ccb);
105 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
106 static void mly_cam_poll(struct cam_sim *sim);
107 static void mly_cam_complete(struct mly_command *mc);
108 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target);
109 static int mly_name_device(struct mly_softc *sc, int bus, int target);
111 static int mly_fwhandshake(struct mly_softc *sc);
113 static void mly_describe_controller(struct mly_softc *sc);
115 static void mly_printstate(struct mly_softc *sc);
116 static void mly_print_command(struct mly_command *mc);
117 static void mly_print_packet(struct mly_command *mc);
118 static void mly_panic(struct mly_softc *sc, char *reason);
119 static int mly_timeout(struct mly_softc *sc);
121 void mly_print_controller(int controller);
124 static d_open_t mly_user_open;
125 static d_close_t mly_user_close;
126 static d_ioctl_t mly_user_ioctl;
127 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc);
128 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh);
130 #define MLY_CMD_TIMEOUT 20
132 static device_method_t mly_methods[] = {
133 /* Device interface */
134 DEVMETHOD(device_probe, mly_probe),
135 DEVMETHOD(device_attach, mly_attach),
136 DEVMETHOD(device_detach, mly_detach),
137 DEVMETHOD(device_shutdown, mly_shutdown),
141 static driver_t mly_pci_driver = {
144 sizeof(struct mly_softc)
147 static devclass_t mly_devclass;
148 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0);
149 MODULE_DEPEND(mly, pci, 1, 1, 1);
150 MODULE_DEPEND(mly, cam, 1, 1, 1);
152 static struct cdevsw mly_cdevsw = {
153 .d_version = D_VERSION,
154 .d_flags = D_NEEDGIANT,
155 .d_open = mly_user_open,
156 .d_close = mly_user_close,
157 .d_ioctl = mly_user_ioctl,
161 /********************************************************************************
162 ********************************************************************************
164 ********************************************************************************
165 ********************************************************************************/
167 static struct mly_ident
175 } mly_identifiers[] = {
176 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"},
177 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"},
178 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"},
179 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"},
180 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"},
184 /********************************************************************************
185 * Compare the provided PCI device with the list we support.
188 mly_probe(device_t dev)
194 for (m = mly_identifiers; m->vendor != 0; m++) {
195 if ((m->vendor == pci_get_vendor(dev)) &&
196 (m->device == pci_get_device(dev)) &&
197 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
198 (m->subdevice == pci_get_subdevice(dev))))) {
200 device_set_desc(dev, m->desc);
201 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */
207 /********************************************************************************
208 * Initialise the controller and softc
211 mly_attach(device_t dev)
213 struct mly_softc *sc = device_get_softc(dev);
221 if (device_get_unit(sc->mly_dev) == 0)
226 * Do PCI-specific initialisation.
228 if ((error = mly_pci_attach(sc)) != 0)
232 * Initialise per-controller queues.
236 mly_initq_complete(sc);
239 * Initialise command-completion task.
241 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc);
243 /* disable interrupts before we start talking to the controller */
244 MLY_MASK_INTERRUPTS(sc);
247 * Wait for the controller to come ready, handshake with the firmware if required.
248 * This is typically only necessary on platforms where the controller BIOS does not
251 if ((error = mly_fwhandshake(sc)))
255 * Allocate initial command buffers.
257 if ((error = mly_alloc_commands(sc)))
261 * Obtain controller feature information
263 if ((error = mly_get_controllerinfo(sc)))
267 * Reallocate command buffers now we know how many we want.
269 mly_release_commands(sc);
270 if ((error = mly_alloc_commands(sc)))
274 * Get the current event counter for health purposes, populate the initial
275 * health status buffer.
277 if ((error = mly_get_eventstatus(sc)))
281 * Enable memory-mailbox mode.
283 if ((error = mly_enable_mmbox(sc)))
289 if ((error = mly_cam_attach(sc)))
293 * Print a little information about the controller
295 mly_describe_controller(sc);
298 * Mark all attached devices for rescan.
300 mly_scan_devices(sc);
303 * Instigate the first status poll immediately. Rescan completions won't
304 * happen until interrupts are enabled, which should still be before
305 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay".
307 mly_periodic((void *)sc);
310 * Create the control device.
312 sc->mly_dev_t = make_dev(&mly_cdevsw, 0, UID_ROOT, GID_OPERATOR,
313 S_IRUSR | S_IWUSR, "mly%d", device_get_unit(sc->mly_dev));
314 sc->mly_dev_t->si_drv1 = sc;
316 /* enable interrupts now */
317 MLY_UNMASK_INTERRUPTS(sc);
320 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz);
329 /********************************************************************************
330 * Perform PCI-specific initialisation.
333 mly_pci_attach(struct mly_softc *sc)
340 /* assume failure is 'not configured' */
344 * Verify that the adapter is correctly set up in PCI space.
346 * XXX we shouldn't do this; the PCI code should.
348 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2);
349 command |= PCIM_CMD_BUSMASTEREN;
350 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2);
351 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2);
352 if (!(command & PCIM_CMD_BUSMASTEREN)) {
353 mly_printf(sc, "can't enable busmaster feature\n");
356 if ((command & PCIM_CMD_MEMEN) == 0) {
357 mly_printf(sc, "memory window not available\n");
362 * Allocate the PCI register window.
364 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */
365 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev,
366 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) {
367 mly_printf(sc, "can't allocate register window\n");
370 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource);
371 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource);
374 * Allocate and connect our interrupt.
377 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ,
378 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
379 mly_printf(sc, "can't allocate interrupt\n");
382 if (bus_setup_intr(sc->mly_dev, sc->mly_irq, INTR_TYPE_CAM | INTR_ENTROPY, NULL, mly_intr, sc, &sc->mly_intr)) {
383 mly_printf(sc, "can't set up interrupt\n");
387 /* assume failure is 'out of memory' */
391 * Allocate the parent bus DMA tag appropriate for our PCI interface.
393 * Note that all of these controllers are 64-bit capable.
395 if (bus_dma_tag_create(NULL, /* parent */
396 1, 0, /* alignment, boundary */
397 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
398 BUS_SPACE_MAXADDR, /* highaddr */
399 NULL, NULL, /* filter, filterarg */
400 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */
401 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
402 BUS_DMA_ALLOCNOW, /* flags */
405 &sc->mly_parent_dmat)) {
406 mly_printf(sc, "can't allocate parent DMA tag\n");
411 * Create DMA tag for mapping buffers into controller-addressable space.
413 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
414 1, 0, /* alignment, boundary */
415 BUS_SPACE_MAXADDR, /* lowaddr */
416 BUS_SPACE_MAXADDR, /* highaddr */
417 NULL, NULL, /* filter, filterarg */
418 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */
419 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
421 busdma_lock_mutex, /* lockfunc */
422 &Giant, /* lockarg */
423 &sc->mly_buffer_dmat)) {
424 mly_printf(sc, "can't allocate buffer DMA tag\n");
429 * Initialise the DMA tag for command packets.
431 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
432 1, 0, /* alignment, boundary */
433 BUS_SPACE_MAXADDR, /* lowaddr */
434 BUS_SPACE_MAXADDR, /* highaddr */
435 NULL, NULL, /* filter, filterarg */
436 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */
437 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
438 BUS_DMA_ALLOCNOW, /* flags */
439 NULL, NULL, /* lockfunc, lockarg */
440 &sc->mly_packet_dmat)) {
441 mly_printf(sc, "can't allocate command packet DMA tag\n");
446 * Detect the hardware interface version
448 for (i = 0; mly_identifiers[i].vendor != 0; i++) {
449 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) &&
450 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) {
451 sc->mly_hwif = mly_identifiers[i].hwif;
452 switch(sc->mly_hwif) {
453 case MLY_HWIF_I960RX:
454 debug(1, "set hardware up for i960RX");
455 sc->mly_doorbell_true = 0x00;
456 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX;
457 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX;
458 sc->mly_idbr = MLY_I960RX_IDBR;
459 sc->mly_odbr = MLY_I960RX_ODBR;
460 sc->mly_error_status = MLY_I960RX_ERROR_STATUS;
461 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS;
462 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK;
464 case MLY_HWIF_STRONGARM:
465 debug(1, "set hardware up for StrongARM");
466 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */
467 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX;
468 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX;
469 sc->mly_idbr = MLY_STRONGARM_IDBR;
470 sc->mly_odbr = MLY_STRONGARM_ODBR;
471 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS;
472 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS;
473 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK;
481 * Create the scatter/gather mappings.
483 if ((error = mly_sg_map(sc)))
487 * Allocate and map the memory mailbox
489 if ((error = mly_mmbox_map(sc)))
498 /********************************************************************************
499 * Shut the controller down and detach all our resources.
502 mly_detach(device_t dev)
506 if ((error = mly_shutdown(dev)) != 0)
509 mly_free(device_get_softc(dev));
513 /********************************************************************************
514 * Bring the controller to a state where it can be safely left alone.
516 * Note that it should not be necessary to wait for any outstanding commands,
517 * as they should be completed prior to calling here.
519 * XXX this applies for I/O, but not status polls; we should beware of
520 * the case where a status command is running while we detach.
523 mly_shutdown(device_t dev)
525 struct mly_softc *sc = device_get_softc(dev);
529 if (sc->mly_state & MLY_STATE_OPEN)
532 /* kill the periodic event */
533 untimeout(mly_periodic, sc, sc->mly_periodic);
535 /* flush controller */
536 mly_printf(sc, "flushing cache...");
537 printf("%s\n", mly_flush(sc) ? "failed" : "done");
539 MLY_MASK_INTERRUPTS(sc);
544 /*******************************************************************************
545 * Take an interrupt, or be poked by other code to look for interrupt-worthy
551 struct mly_softc *sc = (struct mly_softc *)arg;
558 /********************************************************************************
559 ********************************************************************************
560 Bus-dependant Resource Management
561 ********************************************************************************
562 ********************************************************************************/
564 /********************************************************************************
565 * Allocate memory for the scatter/gather tables
568 mly_sg_map(struct mly_softc *sc)
575 * Create a single tag describing a region large enough to hold all of
576 * the s/g lists we will need.
578 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES;
579 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
580 1, 0, /* alignment,boundary */
581 BUS_SPACE_MAXADDR, /* lowaddr */
582 BUS_SPACE_MAXADDR, /* highaddr */
583 NULL, NULL, /* filter, filterarg */
584 segsize, 1, /* maxsize, nsegments */
585 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
586 BUS_DMA_ALLOCNOW, /* flags */
587 NULL, NULL, /* lockfunc, lockarg */
589 mly_printf(sc, "can't allocate scatter/gather DMA tag\n");
594 * Allocate enough s/g maps for all commands and permanently map them into
595 * controller-visible space.
597 * XXX this assumes we can get enough space for all the s/g maps in one
600 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table,
601 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) {
602 mly_printf(sc, "can't allocate s/g table\n");
605 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table,
606 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0)
611 /********************************************************************************
612 * Save the physical address of the base of the s/g table.
615 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
617 struct mly_softc *sc = (struct mly_softc *)arg;
621 /* save base of s/g table's address in bus space */
622 sc->mly_sg_busaddr = segs->ds_addr;
625 /********************************************************************************
626 * Allocate memory for the memory-mailbox interface
629 mly_mmbox_map(struct mly_softc *sc)
633 * Create a DMA tag for a single contiguous region large enough for the
634 * memory mailbox structure.
636 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
637 1, 0, /* alignment,boundary */
638 BUS_SPACE_MAXADDR, /* lowaddr */
639 BUS_SPACE_MAXADDR, /* highaddr */
640 NULL, NULL, /* filter, filterarg */
641 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */
642 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
643 BUS_DMA_ALLOCNOW, /* flags */
644 NULL, NULL, /* lockfunc, lockarg */
645 &sc->mly_mmbox_dmat)) {
646 mly_printf(sc, "can't allocate memory mailbox DMA tag\n");
651 * Allocate the buffer
653 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) {
654 mly_printf(sc, "can't allocate memory mailbox\n");
657 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox,
658 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc,
659 BUS_DMA_NOWAIT) != 0)
661 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox));
666 /********************************************************************************
667 * Save the physical address of the memory mailbox
670 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
672 struct mly_softc *sc = (struct mly_softc *)arg;
676 sc->mly_mmbox_busaddr = segs->ds_addr;
679 /********************************************************************************
680 * Free all of the resources associated with (sc)
682 * Should not be called if the controller is active.
685 mly_free(struct mly_softc *sc)
690 /* Remove the management device */
691 destroy_dev(sc->mly_dev_t);
693 /* detach from CAM */
696 /* release command memory */
697 mly_release_commands(sc);
699 /* throw away the controllerinfo structure */
700 if (sc->mly_controllerinfo != NULL)
701 free(sc->mly_controllerinfo, M_DEVBUF);
703 /* throw away the controllerparam structure */
704 if (sc->mly_controllerparam != NULL)
705 free(sc->mly_controllerparam, M_DEVBUF);
707 /* destroy data-transfer DMA tag */
708 if (sc->mly_buffer_dmat)
709 bus_dma_tag_destroy(sc->mly_buffer_dmat);
711 /* free and destroy DMA memory and tag for s/g lists */
712 if (sc->mly_sg_table) {
713 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap);
714 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap);
717 bus_dma_tag_destroy(sc->mly_sg_dmat);
719 /* free and destroy DMA memory and tag for memory mailbox */
721 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap);
722 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap);
724 if (sc->mly_mmbox_dmat)
725 bus_dma_tag_destroy(sc->mly_mmbox_dmat);
727 /* disconnect the interrupt handler */
729 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr);
730 if (sc->mly_irq != NULL)
731 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq);
733 /* destroy the parent DMA tag */
734 if (sc->mly_parent_dmat)
735 bus_dma_tag_destroy(sc->mly_parent_dmat);
737 /* release the register window mapping */
738 if (sc->mly_regs_resource != NULL)
739 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource);
742 /********************************************************************************
743 ********************************************************************************
745 ********************************************************************************
746 ********************************************************************************/
748 /********************************************************************************
749 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc.
752 mly_get_controllerinfo(struct mly_softc *sc)
754 struct mly_command_ioctl mci;
760 if (sc->mly_controllerinfo != NULL)
761 free(sc->mly_controllerinfo, M_DEVBUF);
763 /* build the getcontrollerinfo ioctl and send it */
764 bzero(&mci, sizeof(mci));
765 sc->mly_controllerinfo = NULL;
766 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO;
767 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo),
768 &status, NULL, NULL)))
773 if (sc->mly_controllerparam != NULL)
774 free(sc->mly_controllerparam, M_DEVBUF);
776 /* build the getcontrollerparameter ioctl and send it */
777 bzero(&mci, sizeof(mci));
778 sc->mly_controllerparam = NULL;
779 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER;
780 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam),
781 &status, NULL, NULL)))
789 /********************************************************************************
790 * Schedule all possible devices for a rescan.
794 mly_scan_devices(struct mly_softc *sc)
801 * Clear any previous BTL information.
803 bzero(&sc->mly_btl, sizeof(sc->mly_btl));
806 * Mark all devices as requiring a rescan, and let the next
807 * periodic scan collect them.
809 for (bus = 0; bus < sc->mly_cam_channels; bus++)
810 if (MLY_BUS_IS_VALID(sc, bus))
811 for (target = 0; target < MLY_MAX_TARGETS; target++)
812 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN;
816 /********************************************************************************
817 * Rescan a device, possibly as a consequence of getting an event which suggests
818 * that it may have changed.
820 * If we suffer resource starvation, we can abandon the rescan as we'll be
824 mly_rescan_btl(struct mly_softc *sc, int bus, int target)
826 struct mly_command *mc;
827 struct mly_command_ioctl *mci;
831 /* check that this bus is valid */
832 if (!MLY_BUS_IS_VALID(sc, bus))
836 if (mly_alloc_command(sc, &mc))
839 /* set up the data buffer */
840 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) {
841 mly_release_command(mc);
844 mc->mc_flags |= MLY_CMD_DATAIN;
845 mc->mc_complete = mly_complete_rescan;
850 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
851 mci->opcode = MDACMD_IOCTL;
852 mci->addr.phys.controller = 0;
853 mci->timeout.value = 30;
854 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
855 if (MLY_BUS_IS_VIRTUAL(sc, bus)) {
856 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid);
857 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID;
858 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target);
859 debug(1, "logical device %d", mci->addr.log.logdev);
861 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid);
862 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID;
863 mci->addr.phys.lun = 0;
864 mci->addr.phys.target = target;
865 mci->addr.phys.channel = bus;
866 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target);
870 * Dispatch the command. If we successfully send the command, clear the rescan
873 if (mly_start(mc) != 0) {
874 mly_release_command(mc);
876 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */
880 /********************************************************************************
881 * Handle the completion of a rescan operation
884 mly_complete_rescan(struct mly_command *mc)
886 struct mly_softc *sc = mc->mc_sc;
887 struct mly_ioctl_getlogdevinfovalid *ldi;
888 struct mly_ioctl_getphysdevinfovalid *pdi;
889 struct mly_command_ioctl *mci;
890 struct mly_btl btl, *btlp;
891 int bus, target, rescan;
896 * Recover the bus and target from the command. We need these even in
897 * the case where we don't have a useful response.
899 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
900 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) {
901 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev);
902 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev);
904 bus = mci->addr.phys.channel;
905 target = mci->addr.phys.target;
907 /* XXX validate bus/target? */
909 /* the default result is 'no device' */
910 bzero(&btl, sizeof(btl));
912 /* if the rescan completed OK, we have possibly-new BTL data */
913 if (mc->mc_status == 0) {
914 if (mc->mc_length == sizeof(*ldi)) {
915 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data;
916 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) ||
917 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) {
918 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n",
919 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number),
920 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number));
921 /* XXX what can we do about this? */
923 btl.mb_flags = MLY_BTL_LOGICAL;
924 btl.mb_type = ldi->raid_level;
925 btl.mb_state = ldi->state;
926 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number,
927 mly_describe_code(mly_table_device_type, ldi->raid_level),
928 mly_describe_code(mly_table_device_state, ldi->state));
929 } else if (mc->mc_length == sizeof(*pdi)) {
930 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data;
931 if ((pdi->channel != bus) || (pdi->target != target)) {
932 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n",
933 bus, target, pdi->channel, pdi->target);
934 /* XXX what can we do about this? */
936 btl.mb_flags = MLY_BTL_PHYSICAL;
937 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL;
938 btl.mb_state = pdi->state;
939 btl.mb_speed = pdi->speed;
940 btl.mb_width = pdi->width;
941 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED)
942 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED;
943 debug(1, "BTL rescan for %d:%d returns %s", bus, target,
944 mly_describe_code(mly_table_device_state, pdi->state));
946 mly_printf(sc, "BTL rescan result invalid\n");
950 free(mc->mc_data, M_DEVBUF);
951 mly_release_command(mc);
954 * Decide whether we need to rescan the device.
958 /* device type changes (usually between 'nothing' and 'something') */
959 btlp = &sc->mly_btl[bus][target];
960 if (btl.mb_flags != btlp->mb_flags) {
961 debug(1, "flags changed, rescanning");
965 /* XXX other reasons? */
968 * Update BTL information.
973 * Perform CAM rescan if required.
976 mly_cam_rescan_btl(sc, bus, target);
979 /********************************************************************************
980 * Get the current health status and set the 'next event' counter to suit.
983 mly_get_eventstatus(struct mly_softc *sc)
985 struct mly_command_ioctl mci;
986 struct mly_health_status *mh;
990 /* build the gethealthstatus ioctl and send it */
991 bzero(&mci, sizeof(mci));
993 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS;
995 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL)))
1000 /* get the event counter */
1001 sc->mly_event_change = mh->change_counter;
1002 sc->mly_event_waiting = mh->next_event;
1003 sc->mly_event_counter = mh->next_event;
1005 /* save the health status into the memory mailbox */
1006 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh));
1008 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event);
1014 /********************************************************************************
1015 * Enable the memory mailbox mode.
1018 mly_enable_mmbox(struct mly_softc *sc)
1020 struct mly_command_ioctl mci;
1021 u_int8_t *sp, status;
1026 /* build the ioctl and send it */
1027 bzero(&mci, sizeof(mci));
1028 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX;
1029 /* set buffer addresses */
1030 mci.param.setmemorymailbox.command_mailbox_physaddr =
1031 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command);
1032 mci.param.setmemorymailbox.status_mailbox_physaddr =
1033 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status);
1034 mci.param.setmemorymailbox.health_buffer_physaddr =
1035 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health);
1037 /* set buffer sizes - abuse of data_size field is revolting */
1038 sp = (u_int8_t *)&mci.data_size;
1039 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024);
1040 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024;
1041 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024;
1043 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox,
1044 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0],
1045 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1],
1046 mci.param.setmemorymailbox.health_buffer_physaddr,
1047 mci.param.setmemorymailbox.health_buffer_size);
1049 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1053 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE;
1054 debug(1, "memory mailbox active");
1058 /********************************************************************************
1059 * Flush all pending I/O from the controller.
1062 mly_flush(struct mly_softc *sc)
1064 struct mly_command_ioctl mci;
1070 /* build the ioctl */
1071 bzero(&mci, sizeof(mci));
1072 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA;
1073 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER;
1075 /* pass it off to the controller */
1076 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1079 return((status == 0) ? 0 : EIO);
1082 /********************************************************************************
1083 * Perform an ioctl command.
1085 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL
1086 * the command requires data transfer from the controller, and we will allocate
1087 * a buffer for it. If (*data) is not NULL, the command requires data transfer
1088 * to the controller.
1090 * XXX passing in the whole ioctl structure is ugly. Better ideas?
1092 * XXX we don't even try to handle the case where datasize > 4k. We should.
1095 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize,
1096 u_int8_t *status, void *sense_buffer, size_t *sense_length)
1098 struct mly_command *mc;
1099 struct mly_command_ioctl *mci;
1105 if (mly_alloc_command(sc, &mc)) {
1110 /* copy the ioctl structure, but save some important fields and then fixup */
1111 mci = &mc->mc_packet->ioctl;
1112 ioctl->sense_buffer_address = mci->sense_buffer_address;
1113 ioctl->maximum_sense_size = mci->maximum_sense_size;
1115 mci->opcode = MDACMD_IOCTL;
1116 mci->timeout.value = 30;
1117 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
1119 /* handle the data buffer */
1121 if (*data == NULL) {
1122 /* allocate data buffer */
1123 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) {
1127 mc->mc_flags |= MLY_CMD_DATAIN;
1129 mc->mc_data = *data;
1130 mc->mc_flags |= MLY_CMD_DATAOUT;
1132 mc->mc_length = datasize;
1133 mc->mc_packet->generic.data_size = datasize;
1136 /* run the command */
1137 if ((error = mly_immediate_command(mc)))
1140 /* clean up and return any data */
1141 *status = mc->mc_status;
1142 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) {
1143 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense);
1144 *sense_length = mc->mc_sense;
1148 /* should we return a data pointer? */
1149 if ((data != NULL) && (*data == NULL))
1150 *data = mc->mc_data;
1152 /* command completed OK */
1157 /* do we need to free a data buffer we allocated? */
1158 if (error && (mc->mc_data != NULL) && (*data == NULL))
1159 free(mc->mc_data, M_DEVBUF);
1160 mly_release_command(mc);
1165 /********************************************************************************
1166 * Check for event(s) outstanding in the controller.
1169 mly_check_event(struct mly_softc *sc)
1173 * The controller may have updated the health status information,
1174 * so check for it here. Note that the counters are all in host memory,
1175 * so this check is very cheap. Also note that we depend on checking on
1178 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) {
1179 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter;
1180 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change,
1181 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event);
1182 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event;
1184 /* wake up anyone that might be interested in this */
1185 wakeup(&sc->mly_event_change);
1187 if (sc->mly_event_counter != sc->mly_event_waiting)
1188 mly_fetch_event(sc);
1191 /********************************************************************************
1192 * Fetch one event from the controller.
1194 * If we fail due to resource starvation, we'll be retried the next time a
1195 * command completes.
1198 mly_fetch_event(struct mly_softc *sc)
1200 struct mly_command *mc;
1201 struct mly_command_ioctl *mci;
1208 if (mly_alloc_command(sc, &mc))
1211 /* set up the data buffer */
1212 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) {
1213 mly_release_command(mc);
1216 mc->mc_length = sizeof(struct mly_event);
1217 mc->mc_flags |= MLY_CMD_DATAIN;
1218 mc->mc_complete = mly_complete_event;
1221 * Get an event number to fetch. It's possible that we've raced with another
1222 * context for the last event, in which case there will be no more events.
1225 if (sc->mly_event_counter == sc->mly_event_waiting) {
1226 mly_release_command(mc);
1230 event = sc->mly_event_counter++;
1236 * At this point we are committed to sending this request, as it
1237 * will be the only one constructed for this particular event number.
1239 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
1240 mci->opcode = MDACMD_IOCTL;
1241 mci->data_size = sizeof(struct mly_event);
1242 mci->addr.phys.lun = (event >> 16) & 0xff;
1243 mci->addr.phys.target = (event >> 24) & 0xff;
1244 mci->addr.phys.channel = 0;
1245 mci->addr.phys.controller = 0;
1246 mci->timeout.value = 30;
1247 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
1248 mci->sub_ioctl = MDACIOCTL_GETEVENT;
1249 mci->param.getevent.sequence_number_low = event & 0xffff;
1251 debug(1, "fetch event %u", event);
1254 * Submit the command.
1256 * Note that failure of mly_start() will result in this event never being
1259 if (mly_start(mc) != 0) {
1260 mly_printf(sc, "couldn't fetch event %u\n", event);
1261 mly_release_command(mc);
1265 /********************************************************************************
1266 * Handle the completion of an event poll.
1269 mly_complete_event(struct mly_command *mc)
1271 struct mly_softc *sc = mc->mc_sc;
1272 struct mly_event *me = (struct mly_event *)mc->mc_data;
1277 * If the event was successfully fetched, process it.
1279 if (mc->mc_status == SCSI_STATUS_OK) {
1280 mly_process_event(sc, me);
1283 mly_release_command(mc);
1286 * Check for another event.
1288 mly_check_event(sc);
1291 /********************************************************************************
1292 * Process a controller event.
1295 mly_process_event(struct mly_softc *sc, struct mly_event *me)
1297 struct scsi_sense_data_fixed *ssd;
1299 int bus, target, event, class, action;
1301 ssd = (struct scsi_sense_data_fixed *)&me->sense[0];
1304 * Errors can be reported using vendor-unique sense data. In this case, the
1305 * event code will be 0x1c (Request sense data present), the sense key will
1306 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the
1307 * actual event code will be a 16-bit value comprised of the ASCQ (low byte)
1308 * and low seven bits of the ASC (low seven bits of the high byte).
1310 if ((me->code == 0x1c) &&
1311 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) &&
1312 (ssd->add_sense_code & 0x80)) {
1313 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual;
1318 /* look up event, get codes */
1319 fp = mly_describe_code(mly_table_event, event);
1321 debug(1, "Event %d code 0x%x", me->sequence_number, me->code);
1325 if (isupper(class) && bootverbose)
1326 class = tolower(class);
1328 /* get action code, text string */
1333 * Print some information about the event.
1335 * This code uses a table derived from the corresponding portion of the Linux
1336 * driver, and thus the parser is very similar.
1339 case 'p': /* error on physical device */
1340 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp);
1342 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
1344 case 'l': /* error on logical unit */
1345 case 'm': /* message about logical unit */
1346 bus = MLY_LOGDEV_BUS(sc, me->lun);
1347 target = MLY_LOGDEV_TARGET(sc, me->lun);
1348 mly_name_device(sc, bus, target);
1349 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp);
1351 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN;
1354 case 's': /* report of sense data */
1355 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) ||
1356 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) &&
1357 (ssd->add_sense_code == 0x04) &&
1358 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02))))
1359 break; /* ignore NO_SENSE or NOT_READY in one case */
1361 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp);
1362 mly_printf(sc, " sense key %d asc %02x ascq %02x\n",
1363 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual);
1364 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, "");
1366 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
1369 mly_printf(sc, tp, me->target, me->lun);
1373 mly_printf(sc, "controller %s\n", tp);
1376 mly_printf(sc, "%s - %d\n", tp, me->code);
1378 default: /* probably a 'noisy' event being ignored */
1383 /********************************************************************************
1384 * Perform periodic activities.
1387 mly_periodic(void *data)
1389 struct mly_softc *sc = (struct mly_softc *)data;
1397 for (bus = 0; bus < sc->mly_cam_channels; bus++) {
1398 if (MLY_BUS_IS_VALID(sc, bus)) {
1399 for (target = 0; target < MLY_MAX_TARGETS; target++) {
1401 /* ignore the controller in this scan */
1402 if (target == sc->mly_controllerparam->initiator_id)
1405 /* perform device rescan? */
1406 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN)
1407 mly_rescan_btl(sc, bus, target);
1412 /* check for controller events */
1413 mly_check_event(sc);
1415 /* reschedule ourselves */
1416 sc->mly_periodic = timeout(mly_periodic, sc, MLY_PERIODIC_INTERVAL * hz);
1419 /********************************************************************************
1420 ********************************************************************************
1422 ********************************************************************************
1423 ********************************************************************************/
1425 /********************************************************************************
1426 * Run a command and wait for it to complete.
1430 mly_immediate_command(struct mly_command *mc)
1432 struct mly_softc *sc = mc->mc_sc;
1437 /* spinning at splcam is ugly, but we're only used during controller init */
1439 if ((error = mly_start(mc))) {
1444 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) {
1445 /* sleep on the command */
1446 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) {
1447 tsleep(mc, PRIBIO, "mlywait", 0);
1450 /* spin and collect status while we do */
1451 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) {
1452 mly_done(mc->mc_sc);
1459 /********************************************************************************
1460 * Deliver a command to the controller.
1462 * XXX it would be good to just queue commands that we can't submit immediately
1463 * and send them later, but we probably want a wrapper for that so that
1464 * we don't hang on a failed submission for an immediate command.
1467 mly_start(struct mly_command *mc)
1469 struct mly_softc *sc = mc->mc_sc;
1470 union mly_command_packet *pkt;
1476 * Set the command up for delivery to the controller.
1478 mly_map_command(mc);
1479 mc->mc_packet->generic.command_id = mc->mc_slot;
1482 mc->mc_timestamp = time_second;
1488 * Do we have to use the hardware mailbox?
1490 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) {
1492 * Check to see if the controller is ready for us.
1494 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) {
1498 mc->mc_flags |= MLY_CMD_BUSY;
1501 * It's ready, send the command.
1503 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys);
1504 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT);
1506 } else { /* use memory-mailbox mode */
1508 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index];
1510 /* check to see if the next index is free yet */
1511 if (pkt->mmbox.flag != 0) {
1515 mc->mc_flags |= MLY_CMD_BUSY;
1517 /* copy in new command */
1518 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data));
1519 /* barrier to ensure completion of previous write before we write the flag */
1520 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0,
1521 BUS_SPACE_BARRIER_WRITE);
1522 /* copy flag last */
1523 pkt->mmbox.flag = mc->mc_packet->mmbox.flag;
1524 /* barrier to ensure completion of previous write before we notify the controller */
1525 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0,
1526 BUS_SPACE_BARRIER_WRITE);
1528 /* signal controller, update index */
1529 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT);
1530 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS;
1533 mly_enqueue_busy(mc);
1538 /********************************************************************************
1539 * Pick up command status from the controller, schedule a completion event
1542 mly_done(struct mly_softc *sc)
1544 struct mly_command *mc;
1545 union mly_status_packet *sp;
1552 /* pick up hardware-mailbox commands */
1553 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) {
1554 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox);
1555 if (slot < MLY_SLOT_MAX) {
1556 mc = &sc->mly_command[slot - MLY_SLOT_START];
1557 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2);
1558 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3);
1559 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4);
1560 mly_remove_busy(mc);
1561 mc->mc_flags &= ~MLY_CMD_BUSY;
1562 mly_enqueue_complete(mc);
1565 /* slot 0xffff may mean "extremely bogus command" */
1566 mly_printf(sc, "got HM completion for illegal slot %u\n", slot);
1568 /* unconditionally acknowledge status */
1569 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY);
1570 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK);
1573 /* pick up memory-mailbox commands */
1574 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) {
1576 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index];
1578 /* check for more status */
1579 if (sp->mmbox.flag == 0)
1582 /* get slot number */
1583 slot = sp->status.command_id;
1584 if (slot < MLY_SLOT_MAX) {
1585 mc = &sc->mly_command[slot - MLY_SLOT_START];
1586 mc->mc_status = sp->status.status;
1587 mc->mc_sense = sp->status.sense_length;
1588 mc->mc_resid = sp->status.residue;
1589 mly_remove_busy(mc);
1590 mc->mc_flags &= ~MLY_CMD_BUSY;
1591 mly_enqueue_complete(mc);
1594 /* slot 0xffff may mean "extremely bogus command" */
1595 mly_printf(sc, "got AM completion for illegal slot %u at %d\n",
1596 slot, sc->mly_mmbox_status_index);
1599 /* clear and move to next index */
1601 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS;
1603 /* acknowledge that we have collected status value(s) */
1604 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY);
1609 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON)
1610 taskqueue_enqueue(taskqueue_swi_giant, &sc->mly_task_complete);
1612 mly_complete(sc, 0);
1616 /********************************************************************************
1617 * Process completed commands
1620 mly_complete(void *context, int pending)
1622 struct mly_softc *sc = (struct mly_softc *)context;
1623 struct mly_command *mc;
1624 void (* mc_complete)(struct mly_command *mc);
1630 * Spin pulling commands off the completed queue and processing them.
1632 while ((mc = mly_dequeue_complete(sc)) != NULL) {
1635 * Free controller resources, mark command complete.
1637 * Note that as soon as we mark the command complete, it may be freed
1638 * out from under us, so we need to save the mc_complete field in
1639 * order to later avoid dereferencing mc. (We would not expect to
1640 * have a polling/sleeping consumer with mc_complete != NULL).
1642 mly_unmap_command(mc);
1643 mc_complete = mc->mc_complete;
1644 mc->mc_flags |= MLY_CMD_COMPLETE;
1647 * Call completion handler or wake up sleeping consumer.
1649 if (mc_complete != NULL) {
1657 * XXX if we are deferring commands due to controller-busy status, we should
1658 * retry submitting them here.
1662 /********************************************************************************
1663 ********************************************************************************
1664 Command Buffer Management
1665 ********************************************************************************
1666 ********************************************************************************/
1668 /********************************************************************************
1669 * Allocate a command.
1672 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp)
1674 struct mly_command *mc;
1678 if ((mc = mly_dequeue_free(sc)) == NULL)
1685 /********************************************************************************
1686 * Release a command back to the freelist.
1689 mly_release_command(struct mly_command *mc)
1694 * Fill in parts of the command that may cause confusion if
1695 * a consumer doesn't when we are later allocated.
1699 mc->mc_complete = NULL;
1700 mc->mc_private = NULL;
1703 * By default, we set up to overwrite the command packet with
1704 * sense information.
1706 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys;
1707 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet);
1709 mly_enqueue_free(mc);
1712 /********************************************************************************
1713 * Map helper for command allocation.
1716 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1718 struct mly_softc *sc = (struct mly_softc *)arg;
1722 sc->mly_packetphys = segs[0].ds_addr;
1725 /********************************************************************************
1726 * Allocate and initialise command and packet structures.
1728 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our
1729 * allocation to that number. If we don't yet know how many commands the
1730 * controller supports, allocate a very small set (suitable for initialisation
1734 mly_alloc_commands(struct mly_softc *sc)
1736 struct mly_command *mc;
1739 if (sc->mly_controllerinfo == NULL) {
1742 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands);
1746 * Allocate enough space for all the command packets in one chunk and
1747 * map them permanently into controller-visible space.
1749 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet,
1750 BUS_DMA_NOWAIT, &sc->mly_packetmap)) {
1753 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet,
1754 ncmd * sizeof(union mly_command_packet),
1755 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0)
1758 for (i = 0; i < ncmd; i++) {
1759 mc = &sc->mly_command[i];
1760 bzero(mc, sizeof(*mc));
1762 mc->mc_slot = MLY_SLOT_START + i;
1763 mc->mc_packet = sc->mly_packet + i;
1764 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet));
1765 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap))
1766 mly_release_command(mc);
1771 /********************************************************************************
1772 * Free all the storage held by commands.
1774 * Must be called with all commands on the free list.
1777 mly_release_commands(struct mly_softc *sc)
1779 struct mly_command *mc;
1781 /* throw away command buffer DMA maps */
1782 while (mly_alloc_command(sc, &mc) == 0)
1783 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap);
1785 /* release the packet storage */
1786 if (sc->mly_packet != NULL) {
1787 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap);
1788 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap);
1789 sc->mly_packet = NULL;
1794 /********************************************************************************
1795 * Command-mapping helper function - populate this command's s/g table
1796 * with the s/g entries for its data.
1799 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1801 struct mly_command *mc = (struct mly_command *)arg;
1802 struct mly_softc *sc = mc->mc_sc;
1803 struct mly_command_generic *gen = &(mc->mc_packet->generic);
1804 struct mly_sg_entry *sg;
1809 /* can we use the transfer structure directly? */
1811 sg = &gen->transfer.direct.sg[0];
1812 gen->command_control.extended_sg_table = 0;
1814 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES);
1815 sg = sc->mly_sg_table + tabofs;
1816 gen->transfer.indirect.entries[0] = nseg;
1817 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry));
1818 gen->command_control.extended_sg_table = 1;
1821 /* copy the s/g table */
1822 for (i = 0; i < nseg; i++) {
1823 sg[i].physaddr = segs[i].ds_addr;
1824 sg[i].length = segs[i].ds_len;
1830 /********************************************************************************
1831 * Command-mapping helper function - save the cdb's physical address.
1833 * We don't support 'large' SCSI commands at this time, so this is unused.
1836 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1838 struct mly_command *mc = (struct mly_command *)arg;
1842 /* XXX can we safely assume that a CDB will never cross a page boundary? */
1843 if ((segs[0].ds_addr % PAGE_SIZE) >
1844 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE))
1845 panic("cdb crosses page boundary");
1847 /* fix up fields in the command packet */
1848 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr;
1852 /********************************************************************************
1853 * Map a command into controller-visible space
1856 mly_map_command(struct mly_command *mc)
1858 struct mly_softc *sc = mc->mc_sc;
1862 /* don't map more than once */
1863 if (mc->mc_flags & MLY_CMD_MAPPED)
1866 /* does the command have a data buffer? */
1867 if (mc->mc_data != NULL) {
1868 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length,
1869 mly_map_command_sg, mc, 0);
1871 if (mc->mc_flags & MLY_CMD_DATAIN)
1872 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD);
1873 if (mc->mc_flags & MLY_CMD_DATAOUT)
1874 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE);
1876 mc->mc_flags |= MLY_CMD_MAPPED;
1879 /********************************************************************************
1880 * Unmap a command from controller-visible space
1883 mly_unmap_command(struct mly_command *mc)
1885 struct mly_softc *sc = mc->mc_sc;
1889 if (!(mc->mc_flags & MLY_CMD_MAPPED))
1892 /* does the command have a data buffer? */
1893 if (mc->mc_data != NULL) {
1894 if (mc->mc_flags & MLY_CMD_DATAIN)
1895 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD);
1896 if (mc->mc_flags & MLY_CMD_DATAOUT)
1897 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE);
1899 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap);
1901 mc->mc_flags &= ~MLY_CMD_MAPPED;
1905 /********************************************************************************
1906 ********************************************************************************
1908 ********************************************************************************
1909 ********************************************************************************/
1911 /********************************************************************************
1912 * Attach the physical and virtual SCSI busses to CAM.
1914 * Physical bus numbering starts from 0, virtual bus numbering from one greater
1915 * than the highest physical bus. Physical busses are only registered if
1916 * the kernel environment variable "hw.mly.register_physical_channels" is set.
1918 * When we refer to a "bus", we are referring to the bus number registered with
1919 * the SIM, wheras a "channel" is a channel number given to the adapter. In order
1920 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used
1924 mly_cam_attach(struct mly_softc *sc)
1926 struct cam_devq *devq;
1932 * Allocate a devq for all our channels combined.
1934 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) {
1935 mly_printf(sc, "can't allocate CAM SIM queue\n");
1940 * If physical channel registration has been requested, register these first.
1941 * Note that we enable tagged command queueing for physical channels.
1943 if (testenv("hw.mly.register_physical_channels")) {
1945 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) {
1947 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc,
1948 device_get_unit(sc->mly_dev),
1950 sc->mly_controllerinfo->maximum_parallel_commands,
1951 1, devq)) == NULL) {
1954 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) {
1955 mly_printf(sc, "CAM XPT phsyical channel registration failed\n");
1958 debug(1, "registered physical channel %d", chn);
1963 * Register our virtual channels, with bus numbers matching channel numbers.
1965 chn = sc->mly_controllerinfo->physical_channels_present;
1966 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) {
1967 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc,
1968 device_get_unit(sc->mly_dev),
1970 sc->mly_controllerinfo->maximum_parallel_commands,
1971 0, devq)) == NULL) {
1974 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) {
1975 mly_printf(sc, "CAM XPT virtual channel registration failed\n");
1978 debug(1, "registered virtual channel %d", chn);
1982 * This is the total number of channels that (might have been) registered with
1983 * CAM. Some may not have been; check the mly_cam_sim array to be certain.
1985 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present +
1986 sc->mly_controllerinfo->virtual_channels_present;
1991 /********************************************************************************
1995 mly_cam_detach(struct mly_softc *sc)
2001 for (i = 0; i < sc->mly_cam_channels; i++) {
2002 if (sc->mly_cam_sim[i] != NULL) {
2003 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i]));
2004 cam_sim_free(sc->mly_cam_sim[i], 0);
2007 if (sc->mly_cam_devq != NULL)
2008 cam_simq_free(sc->mly_cam_devq);
2011 /************************************************************************
2015 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target)
2021 if ((ccb = xpt_alloc_ccb()) == NULL) {
2022 mly_printf(sc, "rescan failed (can't allocate CCB)\n");
2025 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
2026 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) {
2027 mly_printf(sc, "rescan failed (can't create path)\n");
2031 debug(1, "rescan target %d:%d", bus, target);
2035 /********************************************************************************
2036 * Handle an action requested by CAM
2039 mly_cam_action(struct cam_sim *sim, union ccb *ccb)
2041 struct mly_softc *sc = cam_sim_softc(sim);
2045 switch (ccb->ccb_h.func_code) {
2047 /* perform SCSI I/O */
2049 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio))
2053 /* perform geometry calculations */
2054 case XPT_CALC_GEOMETRY:
2056 struct ccb_calc_geometry *ccg = &ccb->ccg;
2057 u_int32_t secs_per_cylinder;
2059 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2061 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) {
2063 ccg->secs_per_track = 63;
2064 } else { /* MLY_BIOSGEOM_2G */
2066 ccg->secs_per_track = 32;
2068 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2069 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2070 ccb->ccb_h.status = CAM_REQ_CMP;
2074 /* handle path attribute inquiry */
2077 struct ccb_pathinq *cpi = &ccb->cpi;
2079 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2081 cpi->version_num = 1;
2082 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */
2083 cpi->target_sprt = 0;
2085 cpi->max_target = MLY_MAX_TARGETS - 1;
2086 cpi->max_lun = MLY_MAX_LUNS - 1;
2087 cpi->initiator_id = sc->mly_controllerparam->initiator_id;
2088 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2089 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN);
2090 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2091 cpi->unit_number = cam_sim_unit(sim);
2092 cpi->bus_id = cam_sim_bus(sim);
2093 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
2094 cpi->transport = XPORT_SPI;
2095 cpi->transport_version = 2;
2096 cpi->protocol = PROTO_SCSI;
2097 cpi->protocol_version = SCSI_REV_2;
2098 ccb->ccb_h.status = CAM_REQ_CMP;
2102 case XPT_GET_TRAN_SETTINGS:
2104 struct ccb_trans_settings *cts = &ccb->cts;
2106 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
2107 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
2109 cts->protocol = PROTO_SCSI;
2110 cts->protocol_version = SCSI_REV_2;
2111 cts->transport = XPORT_SPI;
2112 cts->transport_version = 2;
2119 bus = cam_sim_bus(sim);
2120 target = cts->ccb_h.target_id;
2121 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
2122 /* logical device? */
2123 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) {
2124 /* nothing special for these */
2125 /* physical device? */
2126 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) {
2127 /* allow CAM to try tagged transactions */
2128 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
2129 scsi->valid |= CTS_SCSI_VALID_TQ;
2131 /* convert speed (MHz) to usec */
2132 if (sc->mly_btl[bus][target].mb_speed == 0) {
2133 spi->sync_period = 1000000 / 5;
2135 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed;
2138 /* convert bus width to CAM internal encoding */
2139 switch (sc->mly_btl[bus][target].mb_width) {
2141 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
2144 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2148 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2151 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH;
2153 /* not a device, bail out */
2155 cts->ccb_h.status = CAM_REQ_CMP_ERR;
2159 /* disconnect always OK */
2160 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
2161 spi->valid |= CTS_SPI_VALID_DISC;
2163 cts->ccb_h.status = CAM_REQ_CMP;
2167 default: /* we can't do this */
2168 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
2169 ccb->ccb_h.status = CAM_REQ_INVALID;
2176 /********************************************************************************
2177 * Handle an I/O operation requested by CAM
2180 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
2182 struct mly_softc *sc = cam_sim_softc(sim);
2183 struct mly_command *mc;
2184 struct mly_command_scsi_small *ss;
2189 bus = cam_sim_bus(sim);
2190 target = csio->ccb_h.target_id;
2192 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
2194 /* validate bus number */
2195 if (!MLY_BUS_IS_VALID(sc, bus)) {
2196 debug(0, " invalid bus %d", bus);
2197 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2200 /* check for I/O attempt to a protected device */
2201 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) {
2202 debug(2, " device protected");
2203 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2206 /* check for I/O attempt to nonexistent device */
2207 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) {
2208 debug(2, " device %d:%d does not exist", bus, target);
2209 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2212 /* XXX increase if/when we support large SCSI commands */
2213 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) {
2214 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB);
2215 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2218 /* check that the CDB pointer is not to a physical address */
2219 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
2220 debug(0, " CDB pointer is to physical address");
2221 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2224 /* if there is data transfer, it must be to/from a virtual address */
2225 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
2226 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */
2227 debug(0, " data pointer is to physical address");
2228 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2230 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */
2231 debug(0, " data has premature s/g setup");
2232 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2236 /* abandon aborted ccbs or those that have failed validation */
2237 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
2238 debug(2, "abandoning CCB due to abort/validation failure");
2243 * Get a command, or push the ccb back to CAM and freeze the queue.
2245 if ((error = mly_alloc_command(sc, &mc))) {
2247 xpt_freeze_simq(sim, 1);
2248 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2249 sc->mly_qfrzn_cnt++;
2254 /* build the command */
2255 mc->mc_data = csio->data_ptr;
2256 mc->mc_length = csio->dxfer_len;
2257 mc->mc_complete = mly_cam_complete;
2258 mc->mc_private = csio;
2260 /* save the bus number in the ccb for later recovery XXX should be a better way */
2261 csio->ccb_h.sim_priv.entries[0].field = bus;
2263 /* build the packet for the controller */
2264 ss = &mc->mc_packet->scsi_small;
2265 ss->opcode = MDACMD_SCSI;
2266 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT)
2267 ss->command_control.disable_disconnect = 1;
2268 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
2269 ss->command_control.data_direction = MLY_CCB_WRITE;
2270 ss->data_size = csio->dxfer_len;
2271 ss->addr.phys.lun = csio->ccb_h.target_lun;
2272 ss->addr.phys.target = csio->ccb_h.target_id;
2273 ss->addr.phys.channel = bus;
2274 if (csio->ccb_h.timeout < (60 * 1000)) {
2275 ss->timeout.value = csio->ccb_h.timeout / 1000;
2276 ss->timeout.scale = MLY_TIMEOUT_SECONDS;
2277 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) {
2278 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000);
2279 ss->timeout.scale = MLY_TIMEOUT_MINUTES;
2281 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */
2282 ss->timeout.scale = MLY_TIMEOUT_HOURS;
2284 ss->maximum_sense_size = csio->sense_len;
2285 ss->cdb_length = csio->cdb_len;
2286 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
2287 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len);
2289 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len);
2292 /* give the command to the controller */
2293 if ((error = mly_start(mc))) {
2295 xpt_freeze_simq(sim, 1);
2296 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2297 sc->mly_qfrzn_cnt++;
2305 /********************************************************************************
2306 * Check for possibly-completed commands.
2309 mly_cam_poll(struct cam_sim *sim)
2311 struct mly_softc *sc = cam_sim_softc(sim);
2318 /********************************************************************************
2319 * Handle completion of a command - pass results back through the CCB
2322 mly_cam_complete(struct mly_command *mc)
2324 struct mly_softc *sc = mc->mc_sc;
2325 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private;
2326 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr;
2327 struct mly_btl *btl;
2334 csio->scsi_status = mc->mc_status;
2335 switch(mc->mc_status) {
2336 case SCSI_STATUS_OK:
2338 * In order to report logical device type and status, we overwrite
2339 * the result of the INQUIRY command to logical devices.
2341 bus = csio->ccb_h.sim_priv.entries[0].field;
2342 target = csio->ccb_h.target_id;
2343 /* XXX validate bus/target? */
2344 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) {
2345 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
2346 cmd = *csio->cdb_io.cdb_ptr;
2348 cmd = csio->cdb_io.cdb_bytes[0];
2350 if (cmd == INQUIRY) {
2351 btl = &sc->mly_btl[bus][target];
2352 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8);
2353 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16);
2354 padstr(inq->revision, "", 4);
2358 debug(2, "SCSI_STATUS_OK");
2359 csio->ccb_h.status = CAM_REQ_CMP;
2362 case SCSI_STATUS_CHECK_COND:
2363 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid);
2364 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
2365 bzero(&csio->sense_data, SSD_FULL_SIZE);
2366 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense);
2367 csio->sense_len = mc->mc_sense;
2368 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
2369 csio->resid = mc->mc_resid; /* XXX this is a signed value... */
2372 case SCSI_STATUS_BUSY:
2373 debug(1, "SCSI_STATUS_BUSY");
2374 csio->ccb_h.status = CAM_SCSI_BUSY;
2378 debug(1, "unknown status 0x%x", csio->scsi_status);
2379 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2384 if (sc->mly_qfrzn_cnt) {
2385 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
2386 sc->mly_qfrzn_cnt--;
2390 xpt_done((union ccb *)csio);
2391 mly_release_command(mc);
2394 /********************************************************************************
2395 * Find a peripheral attahed at (bus),(target)
2397 static struct cam_periph *
2398 mly_find_periph(struct mly_softc *sc, int bus, int target)
2400 struct cam_periph *periph;
2401 struct cam_path *path;
2404 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0);
2405 if (status == CAM_REQ_CMP) {
2406 periph = cam_periph_find(path, NULL);
2407 xpt_free_path(path);
2414 /********************************************************************************
2415 * Name the device at (bus)(target)
2418 mly_name_device(struct mly_softc *sc, int bus, int target)
2420 struct cam_periph *periph;
2422 if ((periph = mly_find_periph(sc, bus, target)) != NULL) {
2423 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number);
2426 sc->mly_btl[bus][target].mb_name[0] = 0;
2430 /********************************************************************************
2431 ********************************************************************************
2433 ********************************************************************************
2434 ********************************************************************************/
2436 /********************************************************************************
2437 * Handshake with the firmware while the card is being initialised.
2440 mly_fwhandshake(struct mly_softc *sc)
2442 u_int8_t error, param0, param1;
2447 /* set HM_STSACK and let the firmware initialise */
2448 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK);
2449 DELAY(1000); /* too short? */
2451 /* if HM_STSACK is still true, the controller is initialising */
2452 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK))
2454 mly_printf(sc, "controller initialisation started\n");
2456 /* spin waiting for initialisation to finish, or for a message to be delivered */
2457 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) {
2458 /* check for a message */
2459 if (MLY_ERROR_VALID(sc)) {
2460 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY;
2461 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox);
2462 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1);
2465 case MLY_MSG_SPINUP:
2467 mly_printf(sc, "drive spinup in progress\n");
2468 spinup = 1; /* only print this once (should print drive being spun?) */
2471 case MLY_MSG_RACE_RECOVERY_FAIL:
2472 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n");
2474 case MLY_MSG_RACE_IN_PROGRESS:
2475 mly_printf(sc, "mirror race recovery in progress\n");
2477 case MLY_MSG_RACE_ON_CRITICAL:
2478 mly_printf(sc, "mirror race recovery on a critical drive\n");
2480 case MLY_MSG_PARITY_ERROR:
2481 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n");
2484 mly_printf(sc, "unknown initialisation code 0x%x\n", error);
2491 /********************************************************************************
2492 ********************************************************************************
2493 Debugging and Diagnostics
2494 ********************************************************************************
2495 ********************************************************************************/
2497 /********************************************************************************
2498 * Print some information about the controller.
2501 mly_describe_controller(struct mly_softc *sc)
2503 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo;
2505 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n",
2506 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "",
2507 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */
2508 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day,
2512 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n",
2513 mly_describe_code(mly_table_oemname, mi->oem_information),
2514 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type,
2515 mi->interface_speed, mi->interface_width, mi->interface_name);
2516 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n",
2517 mi->memory_size, mi->memory_speed, mi->memory_width,
2518 mly_describe_code(mly_table_memorytype, mi->memory_type),
2519 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "",
2521 mly_printf(sc, "CPU: %s @ %dMHz\n",
2522 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed);
2523 if (mi->l2cache_size != 0)
2524 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size);
2525 if (mi->exmemory_size != 0)
2526 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n",
2527 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width,
2528 mly_describe_code(mly_table_memorytype, mi->exmemory_type),
2529 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": "");
2530 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed");
2531 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n",
2532 mi->maximum_block_count, mi->maximum_sg_entries);
2533 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n",
2534 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline);
2535 mly_printf(sc, "physical devices present %d\n",
2536 mi->physical_devices_present);
2537 mly_printf(sc, "physical disks present/offline %d/%d\n",
2538 mi->physical_disks_present, mi->physical_disks_offline);
2539 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n",
2540 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s",
2541 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s",
2542 mi->virtual_channels_possible);
2543 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands);
2544 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n",
2545 mi->flash_size, mi->flash_age, mi->flash_maximum_age);
2550 /********************************************************************************
2551 * Print some controller state
2554 mly_printstate(struct mly_softc *sc)
2556 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n",
2557 MLY_GET_REG(sc, sc->mly_idbr),
2558 MLY_GET_REG(sc, sc->mly_odbr),
2559 MLY_GET_REG(sc, sc->mly_error_status),
2562 sc->mly_error_status);
2563 mly_printf(sc, "IMASK %02x ISTATUS %02x\n",
2564 MLY_GET_REG(sc, sc->mly_interrupt_mask),
2565 MLY_GET_REG(sc, sc->mly_interrupt_status));
2566 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n",
2567 MLY_GET_REG(sc, sc->mly_command_mailbox),
2568 MLY_GET_REG(sc, sc->mly_command_mailbox + 1),
2569 MLY_GET_REG(sc, sc->mly_command_mailbox + 2),
2570 MLY_GET_REG(sc, sc->mly_command_mailbox + 3),
2571 MLY_GET_REG(sc, sc->mly_command_mailbox + 4),
2572 MLY_GET_REG(sc, sc->mly_command_mailbox + 5),
2573 MLY_GET_REG(sc, sc->mly_command_mailbox + 6),
2574 MLY_GET_REG(sc, sc->mly_command_mailbox + 7));
2575 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n",
2576 MLY_GET_REG(sc, sc->mly_status_mailbox),
2577 MLY_GET_REG(sc, sc->mly_status_mailbox + 1),
2578 MLY_GET_REG(sc, sc->mly_status_mailbox + 2),
2579 MLY_GET_REG(sc, sc->mly_status_mailbox + 3),
2580 MLY_GET_REG(sc, sc->mly_status_mailbox + 4),
2581 MLY_GET_REG(sc, sc->mly_status_mailbox + 5),
2582 MLY_GET_REG(sc, sc->mly_status_mailbox + 6),
2583 MLY_GET_REG(sc, sc->mly_status_mailbox + 7));
2584 mly_printf(sc, " %04x %08x\n",
2585 MLY_GET_REG2(sc, sc->mly_status_mailbox),
2586 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4));
2589 struct mly_softc *mly_softc0 = NULL;
2591 mly_printstate0(void)
2593 if (mly_softc0 != NULL)
2594 mly_printstate(mly_softc0);
2597 /********************************************************************************
2601 mly_print_command(struct mly_command *mc)
2603 struct mly_softc *sc = mc->mc_sc;
2605 mly_printf(sc, "COMMAND @ %p\n", mc);
2606 mly_printf(sc, " slot %d\n", mc->mc_slot);
2607 mly_printf(sc, " status 0x%x\n", mc->mc_status);
2608 mly_printf(sc, " sense len %d\n", mc->mc_sense);
2609 mly_printf(sc, " resid %d\n", mc->mc_resid);
2610 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys);
2611 if (mc->mc_packet != NULL)
2612 mly_print_packet(mc);
2613 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length);
2614 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n");
2615 mly_printf(sc, " complete %p\n", mc->mc_complete);
2616 mly_printf(sc, " private %p\n", mc->mc_private);
2619 /********************************************************************************
2620 * Print a command packet
2623 mly_print_packet(struct mly_command *mc)
2625 struct mly_softc *sc = mc->mc_sc;
2626 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet;
2627 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet;
2628 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet;
2629 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet;
2632 mly_printf(sc, " command_id %d\n", ge->command_id);
2633 mly_printf(sc, " opcode %d\n", ge->opcode);
2634 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n",
2635 ge->command_control.force_unit_access,
2636 ge->command_control.disable_page_out,
2637 ge->command_control.extended_sg_table,
2638 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ",
2639 ge->command_control.no_auto_sense,
2640 ge->command_control.disable_disconnect);
2641 mly_printf(sc, " data_size %d\n", ge->data_size);
2642 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address);
2643 mly_printf(sc, " lun %d\n", ge->addr.phys.lun);
2644 mly_printf(sc, " target %d\n", ge->addr.phys.target);
2645 mly_printf(sc, " channel %d\n", ge->addr.phys.channel);
2646 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev);
2647 mly_printf(sc, " controller %d\n", ge->addr.phys.controller);
2648 mly_printf(sc, " timeout %d %s\n",
2650 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" :
2651 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours"));
2652 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size);
2653 switch(ge->opcode) {
2656 mly_printf(sc, " cdb length %d\n", ss->cdb_length);
2657 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " ");
2661 case MDACMD_SCSILCPT:
2662 mly_printf(sc, " cdb length %d\n", sl->cdb_length);
2663 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr);
2667 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl);
2668 switch(io->sub_ioctl) {
2669 case MDACIOCTL_SETMEMORYMAILBOX:
2670 mly_printf(sc, " health_buffer_size %d\n",
2671 io->param.setmemorymailbox.health_buffer_size);
2672 mly_printf(sc, " health_buffer_phys 0x%llx\n",
2673 io->param.setmemorymailbox.health_buffer_physaddr);
2674 mly_printf(sc, " command_mailbox 0x%llx\n",
2675 io->param.setmemorymailbox.command_mailbox_physaddr);
2676 mly_printf(sc, " status_mailbox 0x%llx\n",
2677 io->param.setmemorymailbox.status_mailbox_physaddr);
2681 case MDACIOCTL_SETREALTIMECLOCK:
2682 case MDACIOCTL_GETHEALTHSTATUS:
2683 case MDACIOCTL_GETCONTROLLERINFO:
2684 case MDACIOCTL_GETLOGDEVINFOVALID:
2685 case MDACIOCTL_GETPHYSDEVINFOVALID:
2686 case MDACIOCTL_GETPHYSDEVSTATISTICS:
2687 case MDACIOCTL_GETLOGDEVSTATISTICS:
2688 case MDACIOCTL_GETCONTROLLERSTATISTICS:
2689 case MDACIOCTL_GETBDT_FOR_SYSDRIVE:
2690 case MDACIOCTL_CREATENEWCONF:
2691 case MDACIOCTL_ADDNEWCONF:
2692 case MDACIOCTL_GETDEVCONFINFO:
2693 case MDACIOCTL_GETFREESPACELIST:
2694 case MDACIOCTL_MORE:
2695 case MDACIOCTL_SETPHYSDEVPARAMETER:
2696 case MDACIOCTL_GETPHYSDEVPARAMETER:
2697 case MDACIOCTL_GETLOGDEVPARAMETER:
2698 case MDACIOCTL_SETLOGDEVPARAMETER:
2699 mly_printf(sc, " param %10D\n", io->param.data.param, " ");
2703 case MDACIOCTL_GETEVENT:
2704 mly_printf(sc, " event %d\n",
2705 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16));
2709 case MDACIOCTL_SETRAIDDEVSTATE:
2710 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state);
2714 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV:
2715 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device);
2716 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller);
2717 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel);
2718 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target);
2719 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun);
2723 case MDACIOCTL_GETGROUPCONFINFO:
2724 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group);
2728 case MDACIOCTL_GET_SUBSYSTEM_DATA:
2729 case MDACIOCTL_SET_SUBSYSTEM_DATA:
2730 case MDACIOCTL_STARTDISOCVERY:
2731 case MDACIOCTL_INITPHYSDEVSTART:
2732 case MDACIOCTL_INITPHYSDEVSTOP:
2733 case MDACIOCTL_INITRAIDDEVSTART:
2734 case MDACIOCTL_INITRAIDDEVSTOP:
2735 case MDACIOCTL_REBUILDRAIDDEVSTART:
2736 case MDACIOCTL_REBUILDRAIDDEVSTOP:
2737 case MDACIOCTL_MAKECONSISTENTDATASTART:
2738 case MDACIOCTL_MAKECONSISTENTDATASTOP:
2739 case MDACIOCTL_CONSISTENCYCHECKSTART:
2740 case MDACIOCTL_CONSISTENCYCHECKSTOP:
2741 case MDACIOCTL_RESETDEVICE:
2742 case MDACIOCTL_FLUSHDEVICEDATA:
2743 case MDACIOCTL_PAUSEDEVICE:
2744 case MDACIOCTL_UNPAUSEDEVICE:
2745 case MDACIOCTL_LOCATEDEVICE:
2746 case MDACIOCTL_SETMASTERSLAVEMODE:
2747 case MDACIOCTL_DELETERAIDDEV:
2748 case MDACIOCTL_REPLACEINTERNALDEV:
2749 case MDACIOCTL_CLEARCONF:
2750 case MDACIOCTL_GETCONTROLLERPARAMETER:
2751 case MDACIOCTL_SETCONTRLLERPARAMETER:
2752 case MDACIOCTL_CLEARCONFSUSPMODE:
2753 case MDACIOCTL_STOREIMAGE:
2754 case MDACIOCTL_READIMAGE:
2755 case MDACIOCTL_FLASHIMAGES:
2756 case MDACIOCTL_RENAMERAIDDEV:
2757 default: /* no idea what to print */
2763 case MDACMD_IOCTLCHECK:
2764 case MDACMD_MEMCOPY:
2767 break; /* print nothing */
2770 if (ge->command_control.extended_sg_table) {
2771 mly_printf(sc, " sg table 0x%llx/%d\n",
2772 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]);
2774 mly_printf(sc, " 0000 0x%llx/%lld\n",
2775 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length);
2776 mly_printf(sc, " 0001 0x%llx/%lld\n",
2777 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length);
2782 /********************************************************************************
2783 * Panic in a slightly informative fashion
2786 mly_panic(struct mly_softc *sc, char *reason)
2792 /********************************************************************************
2793 * Print queue statistics, callable from DDB.
2796 mly_print_controller(int controller)
2798 struct mly_softc *sc;
2800 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) {
2801 printf("mly: controller %d invalid\n", controller);
2803 device_printf(sc->mly_dev, "queue curr max\n");
2804 device_printf(sc->mly_dev, "free %04d/%04d\n",
2805 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max);
2806 device_printf(sc->mly_dev, "busy %04d/%04d\n",
2807 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max);
2808 device_printf(sc->mly_dev, "complete %04d/%04d\n",
2809 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max);
2815 /********************************************************************************
2816 ********************************************************************************
2817 Control device interface
2818 ********************************************************************************
2819 ********************************************************************************/
2821 /********************************************************************************
2822 * Accept an open operation on the control device.
2825 mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td)
2827 struct mly_softc *sc = dev->si_drv1;
2829 sc->mly_state |= MLY_STATE_OPEN;
2833 /********************************************************************************
2834 * Accept the last close on the control device.
2837 mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td)
2839 struct mly_softc *sc = dev->si_drv1;
2841 sc->mly_state &= ~MLY_STATE_OPEN;
2845 /********************************************************************************
2846 * Handle controller-specific control operations.
2849 mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr,
2850 int32_t flag, struct thread *td)
2852 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1;
2853 struct mly_user_command *uc = (struct mly_user_command *)addr;
2854 struct mly_user_health *uh = (struct mly_user_health *)addr;
2858 return(mly_user_command(sc, uc));
2860 return(mly_user_health(sc, uh));
2866 /********************************************************************************
2867 * Execute a command passed in from userspace.
2869 * The control structure contains the actual command for the controller, as well
2870 * as the user-space data pointer and data size, and an optional sense buffer
2871 * size/pointer. On completion, the data size is adjusted to the command
2872 * residual, and the sense buffer size to the size of the returned sense data.
2876 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc)
2878 struct mly_command *mc;
2881 /* allocate a command */
2882 if (mly_alloc_command(sc, &mc)) {
2884 goto out; /* XXX Linux version will wait for a command */
2887 /* handle data size/direction */
2888 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength;
2889 if (mc->mc_length > 0) {
2890 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) {
2895 if (uc->DataTransferLength > 0) {
2896 mc->mc_flags |= MLY_CMD_DATAIN;
2897 bzero(mc->mc_data, mc->mc_length);
2899 if (uc->DataTransferLength < 0) {
2900 mc->mc_flags |= MLY_CMD_DATAOUT;
2901 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0)
2905 /* copy the controller command */
2906 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox));
2908 /* clear command completion handler so that we get woken up */
2909 mc->mc_complete = NULL;
2911 /* execute the command */
2912 if ((error = mly_start(mc)) != 0)
2915 while (!(mc->mc_flags & MLY_CMD_COMPLETE))
2916 tsleep(mc, PRIBIO, "mlyioctl", 0);
2919 /* return the data to userspace */
2920 if (uc->DataTransferLength > 0)
2921 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0)
2924 /* return the sense buffer to userspace */
2925 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) {
2926 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer,
2927 min(uc->RequestSenseLength, mc->mc_sense))) != 0)
2931 /* return command results to userspace (caller will copy out) */
2932 uc->DataTransferLength = mc->mc_resid;
2933 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense);
2934 uc->CommandStatus = mc->mc_status;
2938 if (mc->mc_data != NULL)
2939 free(mc->mc_data, M_DEVBUF);
2941 mly_release_command(mc);
2945 /********************************************************************************
2946 * Return health status to userspace. If the health change index in the user
2947 * structure does not match that currently exported by the controller, we
2948 * return the current status immediately. Otherwise, we block until either
2949 * interrupted or new status is delivered.
2952 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh)
2954 struct mly_health_status mh;
2957 /* fetch the current health status from userspace */
2958 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0)
2961 /* spin waiting for a status update */
2963 error = EWOULDBLOCK;
2964 while ((error != 0) && (sc->mly_event_change == mh.change_counter))
2965 error = tsleep(&sc->mly_event_change, PRIBIO | PCATCH, "mlyhealth", 0);
2968 /* copy the controller's health status buffer out (there is a race here if it changes again) */
2969 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer,
2970 sizeof(uh->HealthStatusBuffer));
2976 mly_timeout(struct mly_softc *sc)
2978 struct mly_command *mc;
2981 deadline = time_second - MLY_CMD_TIMEOUT;
2982 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) {
2983 if ((mc->mc_timestamp < deadline)) {
2984 device_printf(sc->mly_dev,
2985 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc,
2986 (int)(time_second - mc->mc_timestamp));
2990 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz);