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_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);
112 static int mly_fwhandshake(struct mly_softc *sc);
114 static void mly_describe_controller(struct mly_softc *sc);
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);
121 void mly_print_controller(int controller);
122 static int mly_timeout(struct mly_softc *sc);
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);
131 #define MLY_CMD_TIMEOUT 20
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),
142 static driver_t mly_pci_driver = {
145 sizeof(struct mly_softc)
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);
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,
162 /********************************************************************************
163 ********************************************************************************
165 ********************************************************************************
166 ********************************************************************************/
168 static struct mly_ident
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"},
185 /********************************************************************************
186 * Compare the provided PCI device with the list we support.
189 mly_probe(device_t dev)
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))))) {
201 device_set_desc(dev, m->desc);
202 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */
208 /********************************************************************************
209 * Initialise the controller and softc
212 mly_attach(device_t dev)
214 struct mly_softc *sc = device_get_softc(dev);
222 if (device_get_unit(sc->mly_dev) == 0)
227 * Do PCI-specific initialisation.
229 if ((error = mly_pci_attach(sc)) != 0)
233 * Initialise per-controller queues.
237 mly_initq_complete(sc);
239 #if __FreeBSD_version >= 500005
241 * Initialise command-completion task.
243 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc);
246 /* disable interrupts before we start talking to the controller */
247 MLY_MASK_INTERRUPTS(sc);
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
254 if ((error = mly_fwhandshake(sc)))
258 * Allocate initial command buffers.
260 if ((error = mly_alloc_commands(sc)))
264 * Obtain controller feature information
266 if ((error = mly_get_controllerinfo(sc)))
270 * Reallocate command buffers now we know how many we want.
272 mly_release_commands(sc);
273 if ((error = mly_alloc_commands(sc)))
277 * Get the current event counter for health purposes, populate the initial
278 * health status buffer.
280 if ((error = mly_get_eventstatus(sc)))
284 * Enable memory-mailbox mode.
286 if ((error = mly_enable_mmbox(sc)))
292 if ((error = mly_cam_attach(sc)))
296 * Print a little information about the controller
298 mly_describe_controller(sc);
301 * Mark all attached devices for rescan.
303 mly_scan_devices(sc);
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".
310 mly_periodic((void *)sc);
313 * Create the control device.
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;
319 /* enable interrupts now */
320 MLY_UNMASK_INTERRUPTS(sc);
323 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz);
332 /********************************************************************************
333 * Perform PCI-specific initialisation.
336 mly_pci_attach(struct mly_softc *sc)
343 /* assume failure is 'not configured' */
347 * Verify that the adapter is correctly set up in PCI space.
349 * XXX we shouldn't do this; the PCI code should.
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");
359 if ((command & PCIM_CMD_MEMEN) == 0) {
360 mly_printf(sc, "memory window not available\n");
365 * Allocate the PCI register window.
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");
373 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource);
374 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource);
377 * Allocate and connect our interrupt.
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");
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");
390 /* assume failure is 'out of memory' */
394 * Allocate the parent bus DMA tag appropriate for our PCI interface.
396 * Note that all of these controllers are 64-bit capable.
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 */
408 &sc->mly_parent_dmat)) {
409 mly_printf(sc, "can't allocate parent DMA tag\n");
414 * Create DMA tag for mapping buffers into controller-addressable space.
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 */
424 busdma_lock_mutex, /* lockfunc */
425 &Giant, /* lockarg */
426 &sc->mly_buffer_dmat)) {
427 mly_printf(sc, "can't allocate buffer DMA tag\n");
432 * Initialise the DMA tag for command packets.
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");
449 * Detect the hardware interface version
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;
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;
484 * Create the scatter/gather mappings.
486 if ((error = mly_sg_map(sc)))
490 * Allocate and map the memory mailbox
492 if ((error = mly_mmbox_map(sc)))
501 /********************************************************************************
502 * Shut the controller down and detach all our resources.
505 mly_detach(device_t dev)
509 if ((error = mly_shutdown(dev)) != 0)
512 mly_free(device_get_softc(dev));
516 /********************************************************************************
517 * Bring the controller to a state where it can be safely left alone.
519 * Note that it should not be necessary to wait for any outstanding commands,
520 * as they should be completed prior to calling here.
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.
526 mly_shutdown(device_t dev)
528 struct mly_softc *sc = device_get_softc(dev);
532 if (sc->mly_state & MLY_STATE_OPEN)
535 /* kill the periodic event */
536 untimeout(mly_periodic, sc, sc->mly_periodic);
538 /* flush controller */
539 mly_printf(sc, "flushing cache...");
540 printf("%s\n", mly_flush(sc) ? "failed" : "done");
542 MLY_MASK_INTERRUPTS(sc);
547 /*******************************************************************************
548 * Take an interrupt, or be poked by other code to look for interrupt-worthy
554 struct mly_softc *sc = (struct mly_softc *)arg;
561 /********************************************************************************
562 ********************************************************************************
563 Bus-dependant Resource Management
564 ********************************************************************************
565 ********************************************************************************/
567 /********************************************************************************
568 * Allocate memory for the scatter/gather tables
571 mly_sg_map(struct mly_softc *sc)
578 * Create a single tag describing a region large enough to hold all of
579 * the s/g lists we will need.
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 */
592 mly_printf(sc, "can't allocate scatter/gather DMA tag\n");
597 * Allocate enough s/g maps for all commands and permanently map them into
598 * controller-visible space.
600 * XXX this assumes we can get enough space for all the s/g maps in one
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");
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)
614 /********************************************************************************
615 * Save the physical address of the base of the s/g table.
618 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
620 struct mly_softc *sc = (struct mly_softc *)arg;
624 /* save base of s/g table's address in bus space */
625 sc->mly_sg_busaddr = segs->ds_addr;
628 /********************************************************************************
629 * Allocate memory for the memory-mailbox interface
632 mly_mmbox_map(struct mly_softc *sc)
636 * Create a DMA tag for a single contiguous region large enough for the
637 * memory mailbox structure.
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");
654 * Allocate the buffer
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");
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)
664 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox));
669 /********************************************************************************
670 * Save the physical address of the memory mailbox
673 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
675 struct mly_softc *sc = (struct mly_softc *)arg;
679 sc->mly_mmbox_busaddr = segs->ds_addr;
682 /********************************************************************************
683 * Free all of the resources associated with (sc)
685 * Should not be called if the controller is active.
688 mly_free(struct mly_softc *sc)
693 /* Remove the management device */
694 destroy_dev(sc->mly_dev_t);
696 /* detach from CAM */
699 /* release command memory */
700 mly_release_commands(sc);
702 /* throw away the controllerinfo structure */
703 if (sc->mly_controllerinfo != NULL)
704 free(sc->mly_controllerinfo, M_DEVBUF);
706 /* throw away the controllerparam structure */
707 if (sc->mly_controllerparam != NULL)
708 free(sc->mly_controllerparam, M_DEVBUF);
710 /* destroy data-transfer DMA tag */
711 if (sc->mly_buffer_dmat)
712 bus_dma_tag_destroy(sc->mly_buffer_dmat);
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);
720 bus_dma_tag_destroy(sc->mly_sg_dmat);
722 /* free and destroy DMA memory and tag for memory mailbox */
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);
727 if (sc->mly_mmbox_dmat)
728 bus_dma_tag_destroy(sc->mly_mmbox_dmat);
730 /* disconnect the interrupt handler */
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);
736 /* destroy the parent DMA tag */
737 if (sc->mly_parent_dmat)
738 bus_dma_tag_destroy(sc->mly_parent_dmat);
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);
745 /********************************************************************************
746 ********************************************************************************
748 ********************************************************************************
749 ********************************************************************************/
751 /********************************************************************************
752 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc.
755 mly_get_controllerinfo(struct mly_softc *sc)
757 struct mly_command_ioctl mci;
763 if (sc->mly_controllerinfo != NULL)
764 free(sc->mly_controllerinfo, M_DEVBUF);
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)))
776 if (sc->mly_controllerparam != NULL)
777 free(sc->mly_controllerparam, M_DEVBUF);
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)))
792 /********************************************************************************
793 * Schedule all possible devices for a rescan.
797 mly_scan_devices(struct mly_softc *sc)
804 * Clear any previous BTL information.
806 bzero(&sc->mly_btl, sizeof(sc->mly_btl));
809 * Mark all devices as requiring a rescan, and let the next
810 * periodic scan collect them.
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;
819 /********************************************************************************
820 * Rescan a device, possibly as a consequence of getting an event which suggests
821 * that it may have changed.
823 * If we suffer resource starvation, we can abandon the rescan as we'll be
827 mly_rescan_btl(struct mly_softc *sc, int bus, int target)
829 struct mly_command *mc;
830 struct mly_command_ioctl *mci;
834 /* check that this bus is valid */
835 if (!MLY_BUS_IS_VALID(sc, bus))
839 if (mly_alloc_command(sc, &mc))
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);
847 mc->mc_flags |= MLY_CMD_DATAIN;
848 mc->mc_complete = mly_complete_rescan;
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);
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);
873 * Dispatch the command. If we successfully send the command, clear the rescan
876 if (mly_start(mc) != 0) {
877 mly_release_command(mc);
879 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */
883 /********************************************************************************
884 * Handle the completion of a rescan operation
887 mly_complete_rescan(struct mly_command *mc)
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;
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.
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);
907 bus = mci->addr.phys.channel;
908 target = mci->addr.phys.target;
910 /* XXX validate bus/target? */
912 /* the default result is 'no device' */
913 bzero(&btl, sizeof(btl));
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? */
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? */
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));
949 mly_printf(sc, "BTL rescan result invalid\n");
953 free(mc->mc_data, M_DEVBUF);
954 mly_release_command(mc);
957 * Decide whether we need to rescan the device.
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");
968 /* XXX other reasons? */
971 * Update BTL information.
976 * Perform CAM rescan if required.
979 mly_cam_rescan_btl(sc, bus, target);
982 /********************************************************************************
983 * Get the current health status and set the 'next event' counter to suit.
986 mly_get_eventstatus(struct mly_softc *sc)
988 struct mly_command_ioctl mci;
989 struct mly_health_status *mh;
993 /* build the gethealthstatus ioctl and send it */
994 bzero(&mci, sizeof(mci));
996 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS;
998 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL)))
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;
1008 /* save the health status into the memory mailbox */
1009 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh));
1011 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event);
1017 /********************************************************************************
1018 * Enable the memory mailbox mode.
1021 mly_enable_mmbox(struct mly_softc *sc)
1023 struct mly_command_ioctl mci;
1024 u_int8_t *sp, status;
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);
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;
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);
1052 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1056 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE;
1057 debug(1, "memory mailbox active");
1061 /********************************************************************************
1062 * Flush all pending I/O from the controller.
1065 mly_flush(struct mly_softc *sc)
1067 struct mly_command_ioctl mci;
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;
1078 /* pass it off to the controller */
1079 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1082 return((status == 0) ? 0 : EIO);
1085 /********************************************************************************
1086 * Perform an ioctl command.
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.
1093 * XXX passing in the whole ioctl structure is ugly. Better ideas?
1095 * XXX we don't even try to handle the case where datasize > 4k. We should.
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)
1101 struct mly_command *mc;
1102 struct mly_command_ioctl *mci;
1108 if (mly_alloc_command(sc, &mc)) {
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;
1118 mci->opcode = MDACMD_IOCTL;
1119 mci->timeout.value = 30;
1120 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
1122 /* handle the data buffer */
1124 if (*data == NULL) {
1125 /* allocate data buffer */
1126 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) {
1130 mc->mc_flags |= MLY_CMD_DATAIN;
1132 mc->mc_data = *data;
1133 mc->mc_flags |= MLY_CMD_DATAOUT;
1135 mc->mc_length = datasize;
1136 mc->mc_packet->generic.data_size = datasize;
1139 /* run the command */
1140 if ((error = mly_immediate_command(mc)))
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;
1151 /* should we return a data pointer? */
1152 if ((data != NULL) && (*data == NULL))
1153 *data = mc->mc_data;
1155 /* command completed OK */
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);
1168 /********************************************************************************
1169 * Check for event(s) outstanding in the controller.
1172 mly_check_event(struct mly_softc *sc)
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
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;
1187 /* wake up anyone that might be interested in this */
1188 wakeup(&sc->mly_event_change);
1190 if (sc->mly_event_counter != sc->mly_event_waiting)
1191 mly_fetch_event(sc);
1194 /********************************************************************************
1195 * Fetch one event from the controller.
1197 * If we fail due to resource starvation, we'll be retried the next time a
1198 * command completes.
1201 mly_fetch_event(struct mly_softc *sc)
1203 struct mly_command *mc;
1204 struct mly_command_ioctl *mci;
1211 if (mly_alloc_command(sc, &mc))
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);
1219 mc->mc_length = sizeof(struct mly_event);
1220 mc->mc_flags |= MLY_CMD_DATAIN;
1221 mc->mc_complete = mly_complete_event;
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.
1228 if (sc->mly_event_counter == sc->mly_event_waiting) {
1229 mly_release_command(mc);
1233 event = sc->mly_event_counter++;
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.
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;
1254 debug(1, "fetch event %u", event);
1257 * Submit the command.
1259 * Note that failure of mly_start() will result in this event never being
1262 if (mly_start(mc) != 0) {
1263 mly_printf(sc, "couldn't fetch event %u\n", event);
1264 mly_release_command(mc);
1268 /********************************************************************************
1269 * Handle the completion of an event poll.
1272 mly_complete_event(struct mly_command *mc)
1274 struct mly_softc *sc = mc->mc_sc;
1275 struct mly_event *me = (struct mly_event *)mc->mc_data;
1280 * If the event was successfully fetched, process it.
1282 if (mc->mc_status == SCSI_STATUS_OK) {
1283 mly_process_event(sc, me);
1286 mly_release_command(mc);
1289 * Check for another event.
1291 mly_check_event(sc);
1294 /********************************************************************************
1295 * Process a controller event.
1298 mly_process_event(struct mly_softc *sc, struct mly_event *me)
1300 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0];
1302 int bus, target, event, class, action;
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).
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;
1319 /* look up event, get codes */
1320 fp = mly_describe_code(mly_table_event, event);
1322 debug(1, "Event %d code 0x%x", me->sequence_number, me->code);
1326 if (isupper(class) && bootverbose)
1327 class = tolower(class);
1329 /* get action code, text string */
1334 * Print some information about the event.
1336 * This code uses a table derived from the corresponding portion of the Linux
1337 * driver, and thus the parser is very similar.
1340 case 'p': /* error on physical device */
1341 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp);
1343 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
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);
1352 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN;
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 */
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, "");
1367 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
1370 mly_printf(sc, tp, me->target, me->lun);
1374 mly_printf(sc, "controller %s\n", tp);
1377 mly_printf(sc, "%s - %d\n", tp, me->code);
1379 default: /* probably a 'noisy' event being ignored */
1384 /********************************************************************************
1385 * Perform periodic activities.
1388 mly_periodic(void *data)
1390 struct mly_softc *sc = (struct mly_softc *)data;
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++) {
1402 /* ignore the controller in this scan */
1403 if (target == sc->mly_controllerparam->initiator_id)
1406 /* perform device rescan? */
1407 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN)
1408 mly_rescan_btl(sc, bus, target);
1413 /* check for controller events */
1414 mly_check_event(sc);
1416 /* reschedule ourselves */
1417 sc->mly_periodic = timeout(mly_periodic, sc, MLY_PERIODIC_INTERVAL * hz);
1420 /********************************************************************************
1421 ********************************************************************************
1423 ********************************************************************************
1424 ********************************************************************************/
1426 /********************************************************************************
1427 * Run a command and wait for it to complete.
1431 mly_immediate_command(struct mly_command *mc)
1433 struct mly_softc *sc = mc->mc_sc;
1438 /* spinning at splcam is ugly, but we're only used during controller init */
1440 if ((error = mly_start(mc))) {
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);
1451 /* spin and collect status while we do */
1452 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) {
1453 mly_done(mc->mc_sc);
1460 /********************************************************************************
1461 * Deliver a command to the controller.
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.
1468 mly_start(struct mly_command *mc)
1470 struct mly_softc *sc = mc->mc_sc;
1471 union mly_command_packet *pkt;
1477 * Set the command up for delivery to the controller.
1479 mly_map_command(mc);
1480 mc->mc_packet->generic.command_id = mc->mc_slot;
1483 mc->mc_timestamp = time_second;
1489 * Do we have to use the hardware mailbox?
1491 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) {
1493 * Check to see if the controller is ready for us.
1495 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) {
1499 mc->mc_flags |= MLY_CMD_BUSY;
1502 * It's ready, send the command.
1504 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys);
1505 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT);
1507 } else { /* use memory-mailbox mode */
1509 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index];
1511 /* check to see if the next index is free yet */
1512 if (pkt->mmbox.flag != 0) {
1516 mc->mc_flags |= MLY_CMD_BUSY;
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);
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;
1534 mly_enqueue_busy(mc);
1539 /********************************************************************************
1540 * Pick up command status from the controller, schedule a completion event
1543 mly_done(struct mly_softc *sc)
1545 struct mly_command *mc;
1546 union mly_status_packet *sp;
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);
1566 /* slot 0xffff may mean "extremely bogus command" */
1567 mly_printf(sc, "got HM completion for illegal slot %u\n", slot);
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);
1574 /* pick up memory-mailbox commands */
1575 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) {
1577 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index];
1579 /* check for more status */
1580 if (sp->mmbox.flag == 0)
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);
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);
1600 /* clear and move to next index */
1602 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS;
1604 /* acknowledge that we have collected status value(s) */
1605 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY);
1610 #if __FreeBSD_version >= 500005
1611 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON)
1612 taskqueue_enqueue(taskqueue_swi_giant, &sc->mly_task_complete);
1615 mly_complete(sc, 0);
1619 /********************************************************************************
1620 * Process completed commands
1623 mly_complete(void *context, int pending)
1625 struct mly_softc *sc = (struct mly_softc *)context;
1626 struct mly_command *mc;
1627 void (* mc_complete)(struct mly_command *mc);
1633 * Spin pulling commands off the completed queue and processing them.
1635 while ((mc = mly_dequeue_complete(sc)) != NULL) {
1638 * Free controller resources, mark command complete.
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).
1645 mly_unmap_command(mc);
1646 mc_complete = mc->mc_complete;
1647 mc->mc_flags |= MLY_CMD_COMPLETE;
1650 * Call completion handler or wake up sleeping consumer.
1652 if (mc_complete != NULL) {
1660 * XXX if we are deferring commands due to controller-busy status, we should
1661 * retry submitting them here.
1665 /********************************************************************************
1666 ********************************************************************************
1667 Command Buffer Management
1668 ********************************************************************************
1669 ********************************************************************************/
1671 /********************************************************************************
1672 * Allocate a command.
1675 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp)
1677 struct mly_command *mc;
1681 if ((mc = mly_dequeue_free(sc)) == NULL)
1688 /********************************************************************************
1689 * Release a command back to the freelist.
1692 mly_release_command(struct mly_command *mc)
1697 * Fill in parts of the command that may cause confusion if
1698 * a consumer doesn't when we are later allocated.
1702 mc->mc_complete = NULL;
1703 mc->mc_private = NULL;
1706 * By default, we set up to overwrite the command packet with
1707 * sense information.
1709 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys;
1710 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet);
1712 mly_enqueue_free(mc);
1715 /********************************************************************************
1716 * Map helper for command allocation.
1719 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1721 struct mly_softc *sc = (struct mly_softc *)arg;
1725 sc->mly_packetphys = segs[0].ds_addr;
1728 /********************************************************************************
1729 * Allocate and initialise command and packet structures.
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
1737 mly_alloc_commands(struct mly_softc *sc)
1739 struct mly_command *mc;
1742 if (sc->mly_controllerinfo == NULL) {
1745 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands);
1749 * Allocate enough space for all the command packets in one chunk and
1750 * map them permanently into controller-visible space.
1752 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet,
1753 BUS_DMA_NOWAIT, &sc->mly_packetmap)) {
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)
1761 for (i = 0; i < ncmd; i++) {
1762 mc = &sc->mly_command[i];
1763 bzero(mc, sizeof(*mc));
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);
1774 /********************************************************************************
1775 * Free all the storage held by commands.
1777 * Must be called with all commands on the free list.
1780 mly_release_commands(struct mly_softc *sc)
1782 struct mly_command *mc;
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);
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;
1797 /********************************************************************************
1798 * Command-mapping helper function - populate this command's s/g table
1799 * with the s/g entries for its data.
1802 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
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;
1812 /* can we use the transfer structure directly? */
1814 sg = &gen->transfer.direct.sg[0];
1815 gen->command_control.extended_sg_table = 0;
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;
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;
1833 /********************************************************************************
1834 * Command-mapping helper function - save the cdb's physical address.
1836 * We don't support 'large' SCSI commands at this time, so this is unused.
1839 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1841 struct mly_command *mc = (struct mly_command *)arg;
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");
1850 /* fix up fields in the command packet */
1851 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr;
1855 /********************************************************************************
1856 * Map a command into controller-visible space
1859 mly_map_command(struct mly_command *mc)
1861 struct mly_softc *sc = mc->mc_sc;
1865 /* don't map more than once */
1866 if (mc->mc_flags & MLY_CMD_MAPPED)
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);
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);
1879 mc->mc_flags |= MLY_CMD_MAPPED;
1882 /********************************************************************************
1883 * Unmap a command from controller-visible space
1886 mly_unmap_command(struct mly_command *mc)
1888 struct mly_softc *sc = mc->mc_sc;
1892 if (!(mc->mc_flags & MLY_CMD_MAPPED))
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);
1902 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap);
1904 mc->mc_flags &= ~MLY_CMD_MAPPED;
1908 /********************************************************************************
1909 ********************************************************************************
1911 ********************************************************************************
1912 ********************************************************************************/
1914 /********************************************************************************
1915 * Attach the physical and virtual SCSI busses to CAM.
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.
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
1927 mly_cam_attach(struct mly_softc *sc)
1929 struct cam_devq *devq;
1935 * Allocate a devq for all our channels combined.
1937 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) {
1938 mly_printf(sc, "can't allocate CAM SIM queue\n");
1943 * If physical channel registration has been requested, register these first.
1944 * Note that we enable tagged command queueing for physical channels.
1946 if (testenv("hw.mly.register_physical_channels")) {
1948 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) {
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) {
1956 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) {
1957 mly_printf(sc, "CAM XPT phsyical channel registration failed\n");
1960 debug(1, "registered physical channel %d", chn);
1965 * Register our virtual channels, with bus numbers matching channel numbers.
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) {
1975 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) {
1976 mly_printf(sc, "CAM XPT virtual channel registration failed\n");
1979 debug(1, "registered virtual channel %d", chn);
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.
1986 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present +
1987 sc->mly_controllerinfo->virtual_channels_present;
1992 /********************************************************************************
1996 mly_cam_detach(struct mly_softc *sc)
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);
2008 if (sc->mly_cam_devq != NULL)
2009 cam_simq_free(sc->mly_cam_devq);
2012 /************************************************************************
2016 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target)
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");
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");
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);
2042 mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
2047 /********************************************************************************
2048 * Handle an action requested by CAM
2051 mly_cam_action(struct cam_sim *sim, union ccb *ccb)
2053 struct mly_softc *sc = cam_sim_softc(sim);
2057 switch (ccb->ccb_h.func_code) {
2059 /* perform SCSI I/O */
2061 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio))
2065 /* perform geometry calculations */
2066 case XPT_CALC_GEOMETRY:
2068 struct ccb_calc_geometry *ccg = &ccb->ccg;
2069 u_int32_t secs_per_cylinder;
2071 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2073 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) {
2075 ccg->secs_per_track = 63;
2076 } else { /* MLY_BIOSGEOM_2G */
2078 ccg->secs_per_track = 32;
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;
2086 /* handle path attribute inquiry */
2089 struct ccb_pathinq *cpi = &ccb->cpi;
2091 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2093 cpi->version_num = 1;
2094 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */
2095 cpi->target_sprt = 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;
2110 case XPT_GET_TRAN_SETTINGS:
2112 struct ccb_trans_settings *cts = &ccb->cts;
2115 bus = cam_sim_bus(sim);
2116 target = cts->ccb_h.target_id;
2117 /* XXX validate bus/target? */
2119 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 */
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;
2132 /* convert speed (MHz) to usec */
2133 if (sc->mly_btl[bus][target].mb_speed == 0) {
2134 cts->sync_period = 1000000 / 5;
2136 cts->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed;
2139 /* convert bus width to CAM internal encoding */
2140 switch (sc->mly_btl[bus][target].mb_width) {
2142 cts->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
2145 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2149 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2152 cts->valid |= CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_BUS_WIDTH_VALID;
2154 /* not a device, bail out */
2156 cts->ccb_h.status = CAM_REQ_CMP_ERR;
2160 /* disconnect always OK */
2161 cts->flags |= CCB_TRANS_DISC_ENB;
2162 cts->valid |= CCB_TRANS_DISC_VALID;
2164 cts->ccb_h.status = CAM_REQ_CMP;
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;
2177 /********************************************************************************
2178 * Handle an I/O operation requested by CAM
2181 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
2183 struct mly_softc *sc = cam_sim_softc(sim);
2184 struct mly_command *mc;
2185 struct mly_command_scsi_small *ss;
2190 bus = cam_sim_bus(sim);
2191 target = csio->ccb_h.target_id;
2193 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
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;
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;
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;
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;
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;
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;
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;
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");
2244 * Get a command, or push the ccb back to CAM and freeze the queue.
2246 if ((error = mly_alloc_command(sc, &mc))) {
2248 xpt_freeze_simq(sim, 1);
2249 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2250 sc->mly_qfrzn_cnt++;
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;
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;
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;
2282 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */
2283 ss->timeout.scale = MLY_TIMEOUT_HOURS;
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);
2290 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len);
2293 /* give the command to the controller */
2294 if ((error = mly_start(mc))) {
2296 xpt_freeze_simq(sim, 1);
2297 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2298 sc->mly_qfrzn_cnt++;
2306 /********************************************************************************
2307 * Check for possibly-completed commands.
2310 mly_cam_poll(struct cam_sim *sim)
2312 struct mly_softc *sc = cam_sim_softc(sim);
2319 /********************************************************************************
2320 * Handle completion of a command - pass results back through the CCB
2323 mly_cam_complete(struct mly_command *mc)
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;
2335 csio->scsi_status = mc->mc_status;
2336 switch(mc->mc_status) {
2337 case SCSI_STATUS_OK:
2339 * In order to report logical device type and status, we overwrite
2340 * the result of the INQUIRY command to logical devices.
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;
2349 cmd = csio->cdb_io.cdb_bytes[0];
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);
2359 debug(2, "SCSI_STATUS_OK");
2360 csio->ccb_h.status = CAM_REQ_CMP;
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... */
2373 case SCSI_STATUS_BUSY:
2374 debug(1, "SCSI_STATUS_BUSY");
2375 csio->ccb_h.status = CAM_SCSI_BUSY;
2379 debug(1, "unknown status 0x%x", csio->scsi_status);
2380 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2385 if (sc->mly_qfrzn_cnt) {
2386 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
2387 sc->mly_qfrzn_cnt--;
2391 xpt_done((union ccb *)csio);
2392 mly_release_command(mc);
2395 /********************************************************************************
2396 * Find a peripheral attahed at (bus),(target)
2398 static struct cam_periph *
2399 mly_find_periph(struct mly_softc *sc, int bus, int target)
2401 struct cam_periph *periph;
2402 struct cam_path *path;
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);
2415 /********************************************************************************
2416 * Name the device at (bus)(target)
2419 mly_name_device(struct mly_softc *sc, int bus, int target)
2421 struct cam_periph *periph;
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);
2427 sc->mly_btl[bus][target].mb_name[0] = 0;
2431 /********************************************************************************
2432 ********************************************************************************
2434 ********************************************************************************
2435 ********************************************************************************/
2437 /********************************************************************************
2438 * Handshake with the firmware while the card is being initialised.
2441 mly_fwhandshake(struct mly_softc *sc)
2443 u_int8_t error, param0, param1;
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? */
2452 /* if HM_STSACK is still true, the controller is initialising */
2453 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK))
2455 mly_printf(sc, "controller initialisation started\n");
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);
2466 case MLY_MSG_SPINUP:
2468 mly_printf(sc, "drive spinup in progress\n");
2469 spinup = 1; /* only print this once (should print drive being spun?) */
2472 case MLY_MSG_RACE_RECOVERY_FAIL:
2473 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n");
2475 case MLY_MSG_RACE_IN_PROGRESS:
2476 mly_printf(sc, "mirror race recovery in progress\n");
2478 case MLY_MSG_RACE_ON_CRITICAL:
2479 mly_printf(sc, "mirror race recovery on a critical drive\n");
2481 case MLY_MSG_PARITY_ERROR:
2482 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n");
2485 mly_printf(sc, "unknown initialisation code 0x%x\n", error);
2492 /********************************************************************************
2493 ********************************************************************************
2494 Debugging and Diagnostics
2495 ********************************************************************************
2496 ********************************************************************************/
2498 /********************************************************************************
2499 * Print some information about the controller.
2502 mly_describe_controller(struct mly_softc *sc)
2504 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo;
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,
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": "",
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);
2551 /********************************************************************************
2552 * Print some controller state
2555 mly_printstate(struct mly_softc *sc)
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),
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));
2590 struct mly_softc *mly_softc0 = NULL;
2592 mly_printstate0(void)
2594 if (mly_softc0 != NULL)
2595 mly_printstate(mly_softc0);
2598 /********************************************************************************
2602 mly_print_command(struct mly_command *mc)
2604 struct mly_softc *sc = mc->mc_sc;
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, "\20\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);
2620 /********************************************************************************
2621 * Print a command packet
2624 mly_print_packet(struct mly_command *mc)
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;
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",
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) {
2657 mly_printf(sc, " cdb length %d\n", ss->cdb_length);
2658 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " ");
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);
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);
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, " ");
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));
2710 case MDACIOCTL_SETRAIDDEVSTATE:
2711 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state);
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);
2724 case MDACIOCTL_GETGROUPCONFINFO:
2725 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group);
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 */
2764 case MDACMD_IOCTLCHECK:
2765 case MDACMD_MEMCOPY:
2768 break; /* print nothing */
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]);
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);
2783 /********************************************************************************
2784 * Panic in a slightly informative fashion
2787 mly_panic(struct mly_softc *sc, char *reason)
2793 /********************************************************************************
2794 * Print queue statistics, callable from DDB.
2797 mly_print_controller(int controller)
2799 struct mly_softc *sc;
2801 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) {
2802 printf("mly: controller %d invalid\n", controller);
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);
2816 /********************************************************************************
2817 ********************************************************************************
2818 Control device interface
2819 ********************************************************************************
2820 ********************************************************************************/
2822 /********************************************************************************
2823 * Accept an open operation on the control device.
2826 mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td)
2828 int unit = minor(dev);
2829 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit);
2831 sc->mly_state |= MLY_STATE_OPEN;
2835 /********************************************************************************
2836 * Accept the last close on the control device.
2839 mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td)
2841 int unit = minor(dev);
2842 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit);
2844 sc->mly_state &= ~MLY_STATE_OPEN;
2848 /********************************************************************************
2849 * Handle controller-specific control operations.
2852 mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr,
2853 int32_t flag, struct thread *td)
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;
2861 return(mly_user_command(sc, uc));
2863 return(mly_user_health(sc, uh));
2869 /********************************************************************************
2870 * Execute a command passed in from userspace.
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.
2879 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc)
2881 struct mly_command *mc;
2884 /* allocate a command */
2885 if (mly_alloc_command(sc, &mc)) {
2887 goto out; /* XXX Linux version will wait for a command */
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) {
2898 if (uc->DataTransferLength > 0) {
2899 mc->mc_flags |= MLY_CMD_DATAIN;
2900 bzero(mc->mc_data, mc->mc_length);
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)
2908 /* copy the controller command */
2909 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox));
2911 /* clear command completion handler so that we get woken up */
2912 mc->mc_complete = NULL;
2914 /* execute the command */
2915 if ((error = mly_start(mc)) != 0)
2918 while (!(mc->mc_flags & MLY_CMD_COMPLETE))
2919 tsleep(mc, PRIBIO, "mlyioctl", 0);
2922 /* return the data to userspace */
2923 if (uc->DataTransferLength > 0)
2924 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0)
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)
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;
2941 if (mc->mc_data != NULL)
2942 free(mc->mc_data, M_DEVBUF);
2944 mly_release_command(mc);
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.
2955 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh)
2957 struct mly_health_status mh;
2960 /* fetch the current health status from userspace */
2961 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0)
2964 /* spin waiting for a status update */
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);
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));
2978 mly_timeout(struct mly_softc *sc)
2980 struct mly_command *mc;
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));
2992 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz);