2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/malloc.h>
35 #include <sys/kernel.h>
38 #include <sys/ctype.h>
39 #include <sys/ioccom.h>
42 #include <machine/bus.h>
43 #include <machine/resource.h>
47 #include <cam/cam_ccb.h>
48 #include <cam/cam_periph.h>
49 #include <cam/cam_sim.h>
50 #include <cam/cam_xpt_sim.h>
51 #include <cam/scsi/scsi_all.h>
52 #include <cam/scsi/scsi_message.h>
54 #include <dev/pci/pcireg.h>
55 #include <dev/pci/pcivar.h>
57 #include <dev/mly/mlyreg.h>
58 #include <dev/mly/mlyio.h>
59 #include <dev/mly/mlyvar.h>
60 #include <dev/mly/mly_tables.h>
62 static int mly_probe(device_t dev);
63 static int mly_attach(device_t dev);
64 static int mly_pci_attach(struct mly_softc *sc);
65 static int mly_detach(device_t dev);
66 static int mly_shutdown(device_t dev);
67 static void mly_intr(void *arg);
69 static int mly_sg_map(struct mly_softc *sc);
70 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error);
71 static int mly_mmbox_map(struct mly_softc *sc);
72 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error);
73 static void mly_free(struct mly_softc *sc);
75 static int mly_get_controllerinfo(struct mly_softc *sc);
76 static void mly_scan_devices(struct mly_softc *sc);
77 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target);
78 static void mly_complete_rescan(struct mly_command *mc);
79 static int mly_get_eventstatus(struct mly_softc *sc);
80 static int mly_enable_mmbox(struct mly_softc *sc);
81 static int mly_flush(struct mly_softc *sc);
82 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data,
83 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length);
84 static void mly_check_event(struct mly_softc *sc);
85 static void mly_fetch_event(struct mly_softc *sc);
86 static void mly_complete_event(struct mly_command *mc);
87 static void mly_process_event(struct mly_softc *sc, struct mly_event *me);
88 static void mly_periodic(void *data);
90 static int mly_immediate_command(struct mly_command *mc);
91 static int mly_start(struct mly_command *mc);
92 static void mly_done(struct mly_softc *sc);
93 static void mly_complete(struct mly_softc *sc);
94 static void mly_complete_handler(void *context, int pending);
96 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp);
97 static void mly_release_command(struct mly_command *mc);
98 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error);
99 static int mly_alloc_commands(struct mly_softc *sc);
100 static void mly_release_commands(struct mly_softc *sc);
101 static void mly_map_command(struct mly_command *mc);
102 static void mly_unmap_command(struct mly_command *mc);
104 static int mly_cam_attach(struct mly_softc *sc);
105 static void mly_cam_detach(struct mly_softc *sc);
106 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target);
107 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb);
108 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
109 static void mly_cam_poll(struct cam_sim *sim);
110 static void mly_cam_complete(struct mly_command *mc);
111 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target);
112 static int mly_name_device(struct mly_softc *sc, int bus, int target);
114 static int mly_fwhandshake(struct mly_softc *sc);
116 static void mly_describe_controller(struct mly_softc *sc);
118 static void mly_printstate(struct mly_softc *sc);
119 static void mly_print_command(struct mly_command *mc);
120 static void mly_print_packet(struct mly_command *mc);
121 static void mly_panic(struct mly_softc *sc, char *reason);
122 static void mly_timeout(void *arg);
124 void mly_print_controller(int controller);
127 static d_open_t mly_user_open;
128 static d_close_t mly_user_close;
129 static d_ioctl_t mly_user_ioctl;
130 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc);
131 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh);
133 #define MLY_CMD_TIMEOUT 20
135 static device_method_t mly_methods[] = {
136 /* Device interface */
137 DEVMETHOD(device_probe, mly_probe),
138 DEVMETHOD(device_attach, mly_attach),
139 DEVMETHOD(device_detach, mly_detach),
140 DEVMETHOD(device_shutdown, mly_shutdown),
144 static driver_t mly_pci_driver = {
147 sizeof(struct mly_softc)
150 static devclass_t mly_devclass;
151 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0);
152 MODULE_DEPEND(mly, pci, 1, 1, 1);
153 MODULE_DEPEND(mly, cam, 1, 1, 1);
155 static struct cdevsw mly_cdevsw = {
156 .d_version = D_VERSION,
157 .d_open = mly_user_open,
158 .d_close = mly_user_close,
159 .d_ioctl = mly_user_ioctl,
163 /********************************************************************************
164 ********************************************************************************
166 ********************************************************************************
167 ********************************************************************************/
169 static struct mly_ident
177 } mly_identifiers[] = {
178 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"},
179 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"},
180 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"},
181 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"},
182 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"},
186 /********************************************************************************
187 * Compare the provided PCI device with the list we support.
190 mly_probe(device_t dev)
196 for (m = mly_identifiers; m->vendor != 0; m++) {
197 if ((m->vendor == pci_get_vendor(dev)) &&
198 (m->device == pci_get_device(dev)) &&
199 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
200 (m->subdevice == pci_get_subdevice(dev))))) {
202 device_set_desc(dev, m->desc);
203 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */
209 /********************************************************************************
210 * Initialise the controller and softc
213 mly_attach(device_t dev)
215 struct mly_softc *sc = device_get_softc(dev);
221 mtx_init(&sc->mly_lock, "mly", NULL, MTX_DEF);
222 callout_init_mtx(&sc->mly_periodic, &sc->mly_lock, 0);
225 callout_init_mtx(&sc->mly_timeout, &sc->mly_lock, 0);
226 if (device_get_unit(sc->mly_dev) == 0)
231 * Do PCI-specific initialisation.
233 if ((error = mly_pci_attach(sc)) != 0)
237 * Initialise per-controller queues.
241 mly_initq_complete(sc);
244 * Initialise command-completion task.
246 TASK_INIT(&sc->mly_task_complete, 0, mly_complete_handler, sc);
248 /* disable interrupts before we start talking to the controller */
249 MLY_MASK_INTERRUPTS(sc);
252 * Wait for the controller to come ready, handshake with the firmware if required.
253 * This is typically only necessary on platforms where the controller BIOS does not
256 if ((error = mly_fwhandshake(sc)))
260 * Allocate initial command buffers.
262 if ((error = mly_alloc_commands(sc)))
266 * Obtain controller feature information
269 error = mly_get_controllerinfo(sc);
275 * Reallocate command buffers now we know how many we want.
277 mly_release_commands(sc);
278 if ((error = mly_alloc_commands(sc)))
282 * Get the current event counter for health purposes, populate the initial
283 * health status buffer.
286 error = mly_get_eventstatus(sc);
289 * Enable memory-mailbox mode.
292 error = mly_enable_mmbox(sc);
300 if ((error = mly_cam_attach(sc)))
304 * Print a little information about the controller
306 mly_describe_controller(sc);
309 * Mark all attached devices for rescan.
312 mly_scan_devices(sc);
315 * Instigate the first status poll immediately. Rescan completions won't
316 * happen until interrupts are enabled, which should still be before
317 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay".
319 mly_periodic((void *)sc);
323 * Create the control device.
325 sc->mly_dev_t = make_dev(&mly_cdevsw, 0, UID_ROOT, GID_OPERATOR,
326 S_IRUSR | S_IWUSR, "mly%d", device_get_unit(sc->mly_dev));
327 sc->mly_dev_t->si_drv1 = sc;
329 /* enable interrupts now */
330 MLY_UNMASK_INTERRUPTS(sc);
333 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, mly_timeout, sc);
342 /********************************************************************************
343 * Perform PCI-specific initialisation.
346 mly_pci_attach(struct mly_softc *sc)
352 /* assume failure is 'not configured' */
356 * Verify that the adapter is correctly set up in PCI space.
358 pci_enable_busmaster(sc->mly_dev);
361 * Allocate the PCI register window.
363 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */
364 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev,
365 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) {
366 mly_printf(sc, "can't allocate register window\n");
371 * Allocate and connect our interrupt.
374 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ,
375 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
376 mly_printf(sc, "can't allocate interrupt\n");
379 if (bus_setup_intr(sc->mly_dev, sc->mly_irq, INTR_TYPE_CAM | INTR_ENTROPY | INTR_MPSAFE, NULL, mly_intr, sc, &sc->mly_intr)) {
380 mly_printf(sc, "can't set up interrupt\n");
384 /* assume failure is 'out of memory' */
388 * Allocate the parent bus DMA tag appropriate for our PCI interface.
390 * Note that all of these controllers are 64-bit capable.
392 if (bus_dma_tag_create(bus_get_dma_tag(sc->mly_dev),/* PCI parent */
393 1, 0, /* alignment, boundary */
394 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
395 BUS_SPACE_MAXADDR, /* highaddr */
396 NULL, NULL, /* filter, filterarg */
397 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
398 BUS_SPACE_UNRESTRICTED, /* nsegments */
399 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
400 BUS_DMA_ALLOCNOW, /* flags */
403 &sc->mly_parent_dmat)) {
404 mly_printf(sc, "can't allocate parent DMA tag\n");
409 * Create DMA tag for mapping buffers into controller-addressable space.
411 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
412 1, 0, /* alignment, boundary */
413 BUS_SPACE_MAXADDR, /* lowaddr */
414 BUS_SPACE_MAXADDR, /* highaddr */
415 NULL, NULL, /* filter, filterarg */
416 DFLTPHYS, /* maxsize */
417 MLY_MAX_SGENTRIES, /* nsegments */
418 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
420 busdma_lock_mutex, /* lockfunc */
421 &sc->mly_lock, /* lockarg */
422 &sc->mly_buffer_dmat)) {
423 mly_printf(sc, "can't allocate buffer DMA tag\n");
428 * Initialise the DMA tag for command packets.
430 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
431 1, 0, /* alignment, boundary */
432 BUS_SPACE_MAXADDR, /* lowaddr */
433 BUS_SPACE_MAXADDR, /* highaddr */
434 NULL, NULL, /* filter, filterarg */
435 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */
436 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
437 BUS_DMA_ALLOCNOW, /* flags */
438 NULL, NULL, /* lockfunc, lockarg */
439 &sc->mly_packet_dmat)) {
440 mly_printf(sc, "can't allocate command packet DMA tag\n");
445 * Detect the hardware interface version
447 for (i = 0; mly_identifiers[i].vendor != 0; i++) {
448 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) &&
449 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) {
450 sc->mly_hwif = mly_identifiers[i].hwif;
451 switch(sc->mly_hwif) {
452 case MLY_HWIF_I960RX:
453 debug(1, "set hardware up for i960RX");
454 sc->mly_doorbell_true = 0x00;
455 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX;
456 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX;
457 sc->mly_idbr = MLY_I960RX_IDBR;
458 sc->mly_odbr = MLY_I960RX_ODBR;
459 sc->mly_error_status = MLY_I960RX_ERROR_STATUS;
460 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS;
461 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK;
463 case MLY_HWIF_STRONGARM:
464 debug(1, "set hardware up for StrongARM");
465 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */
466 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX;
467 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX;
468 sc->mly_idbr = MLY_STRONGARM_IDBR;
469 sc->mly_odbr = MLY_STRONGARM_ODBR;
470 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS;
471 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS;
472 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK;
480 * Create the scatter/gather mappings.
482 if ((error = mly_sg_map(sc)))
486 * Allocate and map the memory mailbox
488 if ((error = mly_mmbox_map(sc)))
497 /********************************************************************************
498 * Shut the controller down and detach all our resources.
501 mly_detach(device_t dev)
505 if ((error = mly_shutdown(dev)) != 0)
508 mly_free(device_get_softc(dev));
512 /********************************************************************************
513 * Bring the controller to a state where it can be safely left alone.
515 * Note that it should not be necessary to wait for any outstanding commands,
516 * as they should be completed prior to calling here.
518 * XXX this applies for I/O, but not status polls; we should beware of
519 * the case where a status command is running while we detach.
522 mly_shutdown(device_t dev)
524 struct mly_softc *sc = device_get_softc(dev);
529 if (sc->mly_state & MLY_STATE_OPEN) {
534 /* kill the periodic event */
535 callout_stop(&sc->mly_periodic);
537 callout_stop(&sc->mly_timeout);
540 /* flush controller */
541 mly_printf(sc, "flushing cache...");
542 printf("%s\n", mly_flush(sc) ? "failed" : "done");
544 MLY_MASK_INTERRUPTS(sc);
550 /*******************************************************************************
551 * Take an interrupt, or be poked by other code to look for interrupt-worthy
557 struct mly_softc *sc = (struct mly_softc *)arg;
566 /********************************************************************************
567 ********************************************************************************
568 Bus-dependant Resource Management
569 ********************************************************************************
570 ********************************************************************************/
572 /********************************************************************************
573 * Allocate memory for the scatter/gather tables
576 mly_sg_map(struct mly_softc *sc)
583 * Create a single tag describing a region large enough to hold all of
584 * the s/g lists we will need.
586 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES;
587 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
588 1, 0, /* alignment,boundary */
589 BUS_SPACE_MAXADDR, /* lowaddr */
590 BUS_SPACE_MAXADDR, /* highaddr */
591 NULL, NULL, /* filter, filterarg */
592 segsize, 1, /* maxsize, nsegments */
593 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
594 BUS_DMA_ALLOCNOW, /* flags */
595 NULL, NULL, /* lockfunc, lockarg */
597 mly_printf(sc, "can't allocate scatter/gather DMA tag\n");
602 * Allocate enough s/g maps for all commands and permanently map them into
603 * controller-visible space.
605 * XXX this assumes we can get enough space for all the s/g maps in one
608 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table,
609 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) {
610 mly_printf(sc, "can't allocate s/g table\n");
613 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table,
614 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0)
619 /********************************************************************************
620 * Save the physical address of the base of the s/g table.
623 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
625 struct mly_softc *sc = (struct mly_softc *)arg;
629 /* save base of s/g table's address in bus space */
630 sc->mly_sg_busaddr = segs->ds_addr;
633 /********************************************************************************
634 * Allocate memory for the memory-mailbox interface
637 mly_mmbox_map(struct mly_softc *sc)
641 * Create a DMA tag for a single contiguous region large enough for the
642 * memory mailbox structure.
644 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */
645 1, 0, /* alignment,boundary */
646 BUS_SPACE_MAXADDR, /* lowaddr */
647 BUS_SPACE_MAXADDR, /* highaddr */
648 NULL, NULL, /* filter, filterarg */
649 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */
650 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
651 BUS_DMA_ALLOCNOW, /* flags */
652 NULL, NULL, /* lockfunc, lockarg */
653 &sc->mly_mmbox_dmat)) {
654 mly_printf(sc, "can't allocate memory mailbox DMA tag\n");
659 * Allocate the buffer
661 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) {
662 mly_printf(sc, "can't allocate memory mailbox\n");
665 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox,
666 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc,
667 BUS_DMA_NOWAIT) != 0)
669 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox));
674 /********************************************************************************
675 * Save the physical address of the memory mailbox
678 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
680 struct mly_softc *sc = (struct mly_softc *)arg;
684 sc->mly_mmbox_busaddr = segs->ds_addr;
687 /********************************************************************************
688 * Free all of the resources associated with (sc)
690 * Should not be called if the controller is active.
693 mly_free(struct mly_softc *sc)
698 /* Remove the management device */
699 destroy_dev(sc->mly_dev_t);
702 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr);
703 callout_drain(&sc->mly_periodic);
705 callout_drain(&sc->mly_timeout);
708 /* detach from CAM */
711 /* release command memory */
712 mly_release_commands(sc);
714 /* throw away the controllerinfo structure */
715 if (sc->mly_controllerinfo != NULL)
716 free(sc->mly_controllerinfo, M_DEVBUF);
718 /* throw away the controllerparam structure */
719 if (sc->mly_controllerparam != NULL)
720 free(sc->mly_controllerparam, M_DEVBUF);
722 /* destroy data-transfer DMA tag */
723 if (sc->mly_buffer_dmat)
724 bus_dma_tag_destroy(sc->mly_buffer_dmat);
726 /* free and destroy DMA memory and tag for s/g lists */
727 if (sc->mly_sg_table) {
728 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap);
729 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap);
732 bus_dma_tag_destroy(sc->mly_sg_dmat);
734 /* free and destroy DMA memory and tag for memory mailbox */
736 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap);
737 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap);
739 if (sc->mly_mmbox_dmat)
740 bus_dma_tag_destroy(sc->mly_mmbox_dmat);
742 /* disconnect the interrupt handler */
743 if (sc->mly_irq != NULL)
744 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq);
746 /* destroy the parent DMA tag */
747 if (sc->mly_parent_dmat)
748 bus_dma_tag_destroy(sc->mly_parent_dmat);
750 /* release the register window mapping */
751 if (sc->mly_regs_resource != NULL)
752 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource);
754 mtx_destroy(&sc->mly_lock);
757 /********************************************************************************
758 ********************************************************************************
760 ********************************************************************************
761 ********************************************************************************/
763 /********************************************************************************
764 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc.
767 mly_get_controllerinfo(struct mly_softc *sc)
769 struct mly_command_ioctl mci;
775 if (sc->mly_controllerinfo != NULL)
776 free(sc->mly_controllerinfo, M_DEVBUF);
778 /* build the getcontrollerinfo ioctl and send it */
779 bzero(&mci, sizeof(mci));
780 sc->mly_controllerinfo = NULL;
781 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO;
782 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo),
783 &status, NULL, NULL)))
788 if (sc->mly_controllerparam != NULL)
789 free(sc->mly_controllerparam, M_DEVBUF);
791 /* build the getcontrollerparameter ioctl and send it */
792 bzero(&mci, sizeof(mci));
793 sc->mly_controllerparam = NULL;
794 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER;
795 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam),
796 &status, NULL, NULL)))
804 /********************************************************************************
805 * Schedule all possible devices for a rescan.
809 mly_scan_devices(struct mly_softc *sc)
816 * Clear any previous BTL information.
818 bzero(&sc->mly_btl, sizeof(sc->mly_btl));
821 * Mark all devices as requiring a rescan, and let the next
822 * periodic scan collect them.
824 for (bus = 0; bus < sc->mly_cam_channels; bus++)
825 if (MLY_BUS_IS_VALID(sc, bus))
826 for (target = 0; target < MLY_MAX_TARGETS; target++)
827 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN;
831 /********************************************************************************
832 * Rescan a device, possibly as a consequence of getting an event which suggests
833 * that it may have changed.
835 * If we suffer resource starvation, we can abandon the rescan as we'll be
839 mly_rescan_btl(struct mly_softc *sc, int bus, int target)
841 struct mly_command *mc;
842 struct mly_command_ioctl *mci;
846 /* check that this bus is valid */
847 if (!MLY_BUS_IS_VALID(sc, bus))
851 if (mly_alloc_command(sc, &mc))
854 /* set up the data buffer */
855 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) {
856 mly_release_command(mc);
859 mc->mc_flags |= MLY_CMD_DATAIN;
860 mc->mc_complete = mly_complete_rescan;
865 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
866 mci->opcode = MDACMD_IOCTL;
867 mci->addr.phys.controller = 0;
868 mci->timeout.value = 30;
869 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
870 if (MLY_BUS_IS_VIRTUAL(sc, bus)) {
871 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid);
872 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID;
873 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target);
874 debug(1, "logical device %d", mci->addr.log.logdev);
876 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid);
877 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID;
878 mci->addr.phys.lun = 0;
879 mci->addr.phys.target = target;
880 mci->addr.phys.channel = bus;
881 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target);
885 * Dispatch the command. If we successfully send the command, clear the rescan
888 if (mly_start(mc) != 0) {
889 mly_release_command(mc);
891 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */
895 /********************************************************************************
896 * Handle the completion of a rescan operation
899 mly_complete_rescan(struct mly_command *mc)
901 struct mly_softc *sc = mc->mc_sc;
902 struct mly_ioctl_getlogdevinfovalid *ldi;
903 struct mly_ioctl_getphysdevinfovalid *pdi;
904 struct mly_command_ioctl *mci;
905 struct mly_btl btl, *btlp;
906 int bus, target, rescan;
911 * Recover the bus and target from the command. We need these even in
912 * the case where we don't have a useful response.
914 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
915 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) {
916 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev);
917 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev);
919 bus = mci->addr.phys.channel;
920 target = mci->addr.phys.target;
922 /* XXX validate bus/target? */
924 /* the default result is 'no device' */
925 bzero(&btl, sizeof(btl));
927 /* if the rescan completed OK, we have possibly-new BTL data */
928 if (mc->mc_status == 0) {
929 if (mc->mc_length == sizeof(*ldi)) {
930 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data;
931 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) ||
932 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) {
933 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n",
934 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number),
935 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number));
936 /* XXX what can we do about this? */
938 btl.mb_flags = MLY_BTL_LOGICAL;
939 btl.mb_type = ldi->raid_level;
940 btl.mb_state = ldi->state;
941 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number,
942 mly_describe_code(mly_table_device_type, ldi->raid_level),
943 mly_describe_code(mly_table_device_state, ldi->state));
944 } else if (mc->mc_length == sizeof(*pdi)) {
945 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data;
946 if ((pdi->channel != bus) || (pdi->target != target)) {
947 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n",
948 bus, target, pdi->channel, pdi->target);
949 /* XXX what can we do about this? */
951 btl.mb_flags = MLY_BTL_PHYSICAL;
952 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL;
953 btl.mb_state = pdi->state;
954 btl.mb_speed = pdi->speed;
955 btl.mb_width = pdi->width;
956 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED)
957 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED;
958 debug(1, "BTL rescan for %d:%d returns %s", bus, target,
959 mly_describe_code(mly_table_device_state, pdi->state));
961 mly_printf(sc, "BTL rescan result invalid\n");
965 free(mc->mc_data, M_DEVBUF);
966 mly_release_command(mc);
969 * Decide whether we need to rescan the device.
973 /* device type changes (usually between 'nothing' and 'something') */
974 btlp = &sc->mly_btl[bus][target];
975 if (btl.mb_flags != btlp->mb_flags) {
976 debug(1, "flags changed, rescanning");
980 /* XXX other reasons? */
983 * Update BTL information.
988 * Perform CAM rescan if required.
991 mly_cam_rescan_btl(sc, bus, target);
994 /********************************************************************************
995 * Get the current health status and set the 'next event' counter to suit.
998 mly_get_eventstatus(struct mly_softc *sc)
1000 struct mly_command_ioctl mci;
1001 struct mly_health_status *mh;
1005 /* build the gethealthstatus ioctl and send it */
1006 bzero(&mci, sizeof(mci));
1008 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS;
1010 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL)))
1015 /* get the event counter */
1016 sc->mly_event_change = mh->change_counter;
1017 sc->mly_event_waiting = mh->next_event;
1018 sc->mly_event_counter = mh->next_event;
1020 /* save the health status into the memory mailbox */
1021 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh));
1023 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event);
1029 /********************************************************************************
1030 * Enable the memory mailbox mode.
1033 mly_enable_mmbox(struct mly_softc *sc)
1035 struct mly_command_ioctl mci;
1036 u_int8_t *sp, status;
1041 /* build the ioctl and send it */
1042 bzero(&mci, sizeof(mci));
1043 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX;
1044 /* set buffer addresses */
1045 mci.param.setmemorymailbox.command_mailbox_physaddr =
1046 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command);
1047 mci.param.setmemorymailbox.status_mailbox_physaddr =
1048 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status);
1049 mci.param.setmemorymailbox.health_buffer_physaddr =
1050 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health);
1052 /* set buffer sizes - abuse of data_size field is revolting */
1053 sp = (u_int8_t *)&mci.data_size;
1054 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024);
1055 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024;
1056 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024;
1058 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox,
1059 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0],
1060 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1],
1061 mci.param.setmemorymailbox.health_buffer_physaddr,
1062 mci.param.setmemorymailbox.health_buffer_size);
1064 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1068 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE;
1069 debug(1, "memory mailbox active");
1073 /********************************************************************************
1074 * Flush all pending I/O from the controller.
1077 mly_flush(struct mly_softc *sc)
1079 struct mly_command_ioctl mci;
1085 /* build the ioctl */
1086 bzero(&mci, sizeof(mci));
1087 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA;
1088 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER;
1090 /* pass it off to the controller */
1091 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL)))
1094 return((status == 0) ? 0 : EIO);
1097 /********************************************************************************
1098 * Perform an ioctl command.
1100 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL
1101 * the command requires data transfer from the controller, and we will allocate
1102 * a buffer for it. If (*data) is not NULL, the command requires data transfer
1103 * to the controller.
1105 * XXX passing in the whole ioctl structure is ugly. Better ideas?
1107 * XXX we don't even try to handle the case where datasize > 4k. We should.
1110 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize,
1111 u_int8_t *status, void *sense_buffer, size_t *sense_length)
1113 struct mly_command *mc;
1114 struct mly_command_ioctl *mci;
1118 MLY_ASSERT_LOCKED(sc);
1121 if (mly_alloc_command(sc, &mc)) {
1126 /* copy the ioctl structure, but save some important fields and then fixup */
1127 mci = &mc->mc_packet->ioctl;
1128 ioctl->sense_buffer_address = mci->sense_buffer_address;
1129 ioctl->maximum_sense_size = mci->maximum_sense_size;
1131 mci->opcode = MDACMD_IOCTL;
1132 mci->timeout.value = 30;
1133 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
1135 /* handle the data buffer */
1137 if (*data == NULL) {
1138 /* allocate data buffer */
1139 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) {
1143 mc->mc_flags |= MLY_CMD_DATAIN;
1145 mc->mc_data = *data;
1146 mc->mc_flags |= MLY_CMD_DATAOUT;
1148 mc->mc_length = datasize;
1149 mc->mc_packet->generic.data_size = datasize;
1152 /* run the command */
1153 if ((error = mly_immediate_command(mc)))
1156 /* clean up and return any data */
1157 *status = mc->mc_status;
1158 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) {
1159 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense);
1160 *sense_length = mc->mc_sense;
1164 /* should we return a data pointer? */
1165 if ((data != NULL) && (*data == NULL))
1166 *data = mc->mc_data;
1168 /* command completed OK */
1173 /* do we need to free a data buffer we allocated? */
1174 if (error && (mc->mc_data != NULL) && (*data == NULL))
1175 free(mc->mc_data, M_DEVBUF);
1176 mly_release_command(mc);
1181 /********************************************************************************
1182 * Check for event(s) outstanding in the controller.
1185 mly_check_event(struct mly_softc *sc)
1189 * The controller may have updated the health status information,
1190 * so check for it here. Note that the counters are all in host memory,
1191 * so this check is very cheap. Also note that we depend on checking on
1194 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) {
1195 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter;
1196 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change,
1197 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event);
1198 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event;
1200 /* wake up anyone that might be interested in this */
1201 wakeup(&sc->mly_event_change);
1203 if (sc->mly_event_counter != sc->mly_event_waiting)
1204 mly_fetch_event(sc);
1207 /********************************************************************************
1208 * Fetch one event from the controller.
1210 * If we fail due to resource starvation, we'll be retried the next time a
1211 * command completes.
1214 mly_fetch_event(struct mly_softc *sc)
1216 struct mly_command *mc;
1217 struct mly_command_ioctl *mci;
1223 if (mly_alloc_command(sc, &mc))
1226 /* set up the data buffer */
1227 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) {
1228 mly_release_command(mc);
1231 mc->mc_length = sizeof(struct mly_event);
1232 mc->mc_flags |= MLY_CMD_DATAIN;
1233 mc->mc_complete = mly_complete_event;
1236 * Get an event number to fetch. It's possible that we've raced with another
1237 * context for the last event, in which case there will be no more events.
1239 if (sc->mly_event_counter == sc->mly_event_waiting) {
1240 mly_release_command(mc);
1243 event = sc->mly_event_counter++;
1248 * At this point we are committed to sending this request, as it
1249 * will be the only one constructed for this particular event number.
1251 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl;
1252 mci->opcode = MDACMD_IOCTL;
1253 mci->data_size = sizeof(struct mly_event);
1254 mci->addr.phys.lun = (event >> 16) & 0xff;
1255 mci->addr.phys.target = (event >> 24) & 0xff;
1256 mci->addr.phys.channel = 0;
1257 mci->addr.phys.controller = 0;
1258 mci->timeout.value = 30;
1259 mci->timeout.scale = MLY_TIMEOUT_SECONDS;
1260 mci->sub_ioctl = MDACIOCTL_GETEVENT;
1261 mci->param.getevent.sequence_number_low = event & 0xffff;
1263 debug(1, "fetch event %u", event);
1266 * Submit the command.
1268 * Note that failure of mly_start() will result in this event never being
1271 if (mly_start(mc) != 0) {
1272 mly_printf(sc, "couldn't fetch event %u\n", event);
1273 mly_release_command(mc);
1277 /********************************************************************************
1278 * Handle the completion of an event poll.
1281 mly_complete_event(struct mly_command *mc)
1283 struct mly_softc *sc = mc->mc_sc;
1284 struct mly_event *me = (struct mly_event *)mc->mc_data;
1289 * If the event was successfully fetched, process it.
1291 if (mc->mc_status == SCSI_STATUS_OK) {
1292 mly_process_event(sc, me);
1295 mly_release_command(mc);
1298 * Check for another event.
1300 mly_check_event(sc);
1303 /********************************************************************************
1304 * Process a controller event.
1307 mly_process_event(struct mly_softc *sc, struct mly_event *me)
1309 struct scsi_sense_data_fixed *ssd;
1311 int bus, target, event, class, action;
1313 ssd = (struct scsi_sense_data_fixed *)&me->sense[0];
1316 * Errors can be reported using vendor-unique sense data. In this case, the
1317 * event code will be 0x1c (Request sense data present), the sense key will
1318 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the
1319 * actual event code will be a 16-bit value comprised of the ASCQ (low byte)
1320 * and low seven bits of the ASC (low seven bits of the high byte).
1322 if ((me->code == 0x1c) &&
1323 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) &&
1324 (ssd->add_sense_code & 0x80)) {
1325 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual;
1330 /* look up event, get codes */
1331 fp = mly_describe_code(mly_table_event, event);
1333 debug(1, "Event %d code 0x%x", me->sequence_number, me->code);
1337 if (isupper(class) && bootverbose)
1338 class = tolower(class);
1340 /* get action code, text string */
1345 * Print some information about the event.
1347 * This code uses a table derived from the corresponding portion of the Linux
1348 * driver, and thus the parser is very similar.
1351 case 'p': /* error on physical device */
1352 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp);
1354 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
1356 case 'l': /* error on logical unit */
1357 case 'm': /* message about logical unit */
1358 bus = MLY_LOGDEV_BUS(sc, me->lun);
1359 target = MLY_LOGDEV_TARGET(sc, me->lun);
1360 mly_name_device(sc, bus, target);
1361 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp);
1363 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN;
1365 case 's': /* report of sense data */
1366 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) ||
1367 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) &&
1368 (ssd->add_sense_code == 0x04) &&
1369 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02))))
1370 break; /* ignore NO_SENSE or NOT_READY in one case */
1372 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp);
1373 mly_printf(sc, " sense key %d asc %02x ascq %02x\n",
1374 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual);
1375 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, "");
1377 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN;
1380 mly_printf(sc, tp, me->target, me->lun);
1384 mly_printf(sc, "controller %s\n", tp);
1387 mly_printf(sc, "%s - %d\n", tp, me->code);
1389 default: /* probably a 'noisy' event being ignored */
1394 /********************************************************************************
1395 * Perform periodic activities.
1398 mly_periodic(void *data)
1400 struct mly_softc *sc = (struct mly_softc *)data;
1404 MLY_ASSERT_LOCKED(sc);
1409 for (bus = 0; bus < sc->mly_cam_channels; bus++) {
1410 if (MLY_BUS_IS_VALID(sc, bus)) {
1411 for (target = 0; target < MLY_MAX_TARGETS; target++) {
1413 /* ignore the controller in this scan */
1414 if (target == sc->mly_controllerparam->initiator_id)
1417 /* perform device rescan? */
1418 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN)
1419 mly_rescan_btl(sc, bus, target);
1424 /* check for controller events */
1425 mly_check_event(sc);
1427 /* reschedule ourselves */
1428 callout_schedule(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz);
1431 /********************************************************************************
1432 ********************************************************************************
1434 ********************************************************************************
1435 ********************************************************************************/
1437 /********************************************************************************
1438 * Run a command and wait for it to complete.
1442 mly_immediate_command(struct mly_command *mc)
1444 struct mly_softc *sc = mc->mc_sc;
1449 MLY_ASSERT_LOCKED(sc);
1450 if ((error = mly_start(mc))) {
1454 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) {
1455 /* sleep on the command */
1456 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) {
1457 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlywait", 0);
1460 /* spin and collect status while we do */
1461 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) {
1462 mly_done(mc->mc_sc);
1468 /********************************************************************************
1469 * Deliver a command to the controller.
1471 * XXX it would be good to just queue commands that we can't submit immediately
1472 * and send them later, but we probably want a wrapper for that so that
1473 * we don't hang on a failed submission for an immediate command.
1476 mly_start(struct mly_command *mc)
1478 struct mly_softc *sc = mc->mc_sc;
1479 union mly_command_packet *pkt;
1482 MLY_ASSERT_LOCKED(sc);
1485 * Set the command up for delivery to the controller.
1487 mly_map_command(mc);
1488 mc->mc_packet->generic.command_id = mc->mc_slot;
1491 mc->mc_timestamp = time_second;
1495 * Do we have to use the hardware mailbox?
1497 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) {
1499 * Check to see if the controller is ready for us.
1501 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) {
1504 mc->mc_flags |= MLY_CMD_BUSY;
1507 * It's ready, send the command.
1509 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys);
1510 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT);
1512 } else { /* use memory-mailbox mode */
1514 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index];
1516 /* check to see if the next index is free yet */
1517 if (pkt->mmbox.flag != 0) {
1520 mc->mc_flags |= MLY_CMD_BUSY;
1522 /* copy in new command */
1523 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data));
1524 /* barrier to ensure completion of previous write before we write the flag */
1525 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE);
1526 /* copy flag last */
1527 pkt->mmbox.flag = mc->mc_packet->mmbox.flag;
1528 /* barrier to ensure completion of previous write before we notify the controller */
1529 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE);
1531 /* signal controller, update index */
1532 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT);
1533 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS;
1536 mly_enqueue_busy(mc);
1540 /********************************************************************************
1541 * Pick up command status from the controller, schedule a completion event
1544 mly_done(struct mly_softc *sc)
1546 struct mly_command *mc;
1547 union mly_status_packet *sp;
1551 MLY_ASSERT_LOCKED(sc);
1554 /* pick up hardware-mailbox commands */
1555 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) {
1556 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox);
1557 if (slot < MLY_SLOT_MAX) {
1558 mc = &sc->mly_command[slot - MLY_SLOT_START];
1559 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2);
1560 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3);
1561 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4);
1562 mly_remove_busy(mc);
1563 mc->mc_flags &= ~MLY_CMD_BUSY;
1564 mly_enqueue_complete(mc);
1567 /* slot 0xffff may mean "extremely bogus command" */
1568 mly_printf(sc, "got HM completion for illegal slot %u\n", slot);
1570 /* unconditionally acknowledge status */
1571 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY);
1572 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK);
1575 /* pick up memory-mailbox commands */
1576 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) {
1578 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index];
1580 /* check for more status */
1581 if (sp->mmbox.flag == 0)
1584 /* get slot number */
1585 slot = sp->status.command_id;
1586 if (slot < MLY_SLOT_MAX) {
1587 mc = &sc->mly_command[slot - MLY_SLOT_START];
1588 mc->mc_status = sp->status.status;
1589 mc->mc_sense = sp->status.sense_length;
1590 mc->mc_resid = sp->status.residue;
1591 mly_remove_busy(mc);
1592 mc->mc_flags &= ~MLY_CMD_BUSY;
1593 mly_enqueue_complete(mc);
1596 /* slot 0xffff may mean "extremely bogus command" */
1597 mly_printf(sc, "got AM completion for illegal slot %u at %d\n",
1598 slot, sc->mly_mmbox_status_index);
1601 /* clear and move to next index */
1603 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS;
1605 /* acknowledge that we have collected status value(s) */
1606 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY);
1610 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON)
1611 taskqueue_enqueue(taskqueue_thread, &sc->mly_task_complete);
1617 /********************************************************************************
1618 * Process completed commands
1621 mly_complete_handler(void *context, int pending)
1623 struct mly_softc *sc = (struct mly_softc *)context;
1631 mly_complete(struct mly_softc *sc)
1633 struct mly_command *mc;
1634 void (* mc_complete)(struct mly_command *mc);
1639 * Spin pulling commands off the completed queue and processing them.
1641 while ((mc = mly_dequeue_complete(sc)) != NULL) {
1644 * Free controller resources, mark command complete.
1646 * Note that as soon as we mark the command complete, it may be freed
1647 * out from under us, so we need to save the mc_complete field in
1648 * order to later avoid dereferencing mc. (We would not expect to
1649 * have a polling/sleeping consumer with mc_complete != NULL).
1651 mly_unmap_command(mc);
1652 mc_complete = mc->mc_complete;
1653 mc->mc_flags |= MLY_CMD_COMPLETE;
1656 * Call completion handler or wake up sleeping consumer.
1658 if (mc_complete != NULL) {
1666 * XXX if we are deferring commands due to controller-busy status, we should
1667 * retry submitting them here.
1671 /********************************************************************************
1672 ********************************************************************************
1673 Command Buffer Management
1674 ********************************************************************************
1675 ********************************************************************************/
1677 /********************************************************************************
1678 * Allocate a command.
1681 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp)
1683 struct mly_command *mc;
1687 if ((mc = mly_dequeue_free(sc)) == NULL)
1694 /********************************************************************************
1695 * Release a command back to the freelist.
1698 mly_release_command(struct mly_command *mc)
1703 * Fill in parts of the command that may cause confusion if
1704 * a consumer doesn't when we are later allocated.
1708 mc->mc_complete = NULL;
1709 mc->mc_private = NULL;
1712 * By default, we set up to overwrite the command packet with
1713 * sense information.
1715 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys;
1716 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet);
1718 mly_enqueue_free(mc);
1721 /********************************************************************************
1722 * Map helper for command allocation.
1725 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1727 struct mly_softc *sc = (struct mly_softc *)arg;
1731 sc->mly_packetphys = segs[0].ds_addr;
1734 /********************************************************************************
1735 * Allocate and initialise command and packet structures.
1737 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our
1738 * allocation to that number. If we don't yet know how many commands the
1739 * controller supports, allocate a very small set (suitable for initialisation
1743 mly_alloc_commands(struct mly_softc *sc)
1745 struct mly_command *mc;
1748 if (sc->mly_controllerinfo == NULL) {
1751 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands);
1755 * Allocate enough space for all the command packets in one chunk and
1756 * map them permanently into controller-visible space.
1758 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet,
1759 BUS_DMA_NOWAIT, &sc->mly_packetmap)) {
1762 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet,
1763 ncmd * sizeof(union mly_command_packet),
1764 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0)
1767 for (i = 0; i < ncmd; i++) {
1768 mc = &sc->mly_command[i];
1769 bzero(mc, sizeof(*mc));
1771 mc->mc_slot = MLY_SLOT_START + i;
1772 mc->mc_packet = sc->mly_packet + i;
1773 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet));
1774 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap))
1775 mly_release_command(mc);
1780 /********************************************************************************
1781 * Free all the storage held by commands.
1783 * Must be called with all commands on the free list.
1786 mly_release_commands(struct mly_softc *sc)
1788 struct mly_command *mc;
1790 /* throw away command buffer DMA maps */
1791 while (mly_alloc_command(sc, &mc) == 0)
1792 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap);
1794 /* release the packet storage */
1795 if (sc->mly_packet != NULL) {
1796 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap);
1797 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap);
1798 sc->mly_packet = NULL;
1803 /********************************************************************************
1804 * Command-mapping helper function - populate this command's s/g table
1805 * with the s/g entries for its data.
1808 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1810 struct mly_command *mc = (struct mly_command *)arg;
1811 struct mly_softc *sc = mc->mc_sc;
1812 struct mly_command_generic *gen = &(mc->mc_packet->generic);
1813 struct mly_sg_entry *sg;
1818 /* can we use the transfer structure directly? */
1820 sg = &gen->transfer.direct.sg[0];
1821 gen->command_control.extended_sg_table = 0;
1823 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES);
1824 sg = sc->mly_sg_table + tabofs;
1825 gen->transfer.indirect.entries[0] = nseg;
1826 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry));
1827 gen->command_control.extended_sg_table = 1;
1830 /* copy the s/g table */
1831 for (i = 0; i < nseg; i++) {
1832 sg[i].physaddr = segs[i].ds_addr;
1833 sg[i].length = segs[i].ds_len;
1839 /********************************************************************************
1840 * Command-mapping helper function - save the cdb's physical address.
1842 * We don't support 'large' SCSI commands at this time, so this is unused.
1845 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1847 struct mly_command *mc = (struct mly_command *)arg;
1851 /* XXX can we safely assume that a CDB will never cross a page boundary? */
1852 if ((segs[0].ds_addr % PAGE_SIZE) >
1853 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE))
1854 panic("cdb crosses page boundary");
1856 /* fix up fields in the command packet */
1857 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr;
1861 /********************************************************************************
1862 * Map a command into controller-visible space
1865 mly_map_command(struct mly_command *mc)
1867 struct mly_softc *sc = mc->mc_sc;
1871 /* don't map more than once */
1872 if (mc->mc_flags & MLY_CMD_MAPPED)
1875 /* does the command have a data buffer? */
1876 if (mc->mc_data != NULL) {
1877 if (mc->mc_flags & MLY_CMD_CCB)
1878 bus_dmamap_load_ccb(sc->mly_buffer_dmat, mc->mc_datamap,
1879 mc->mc_data, mly_map_command_sg, mc, 0);
1881 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap,
1882 mc->mc_data, mc->mc_length,
1883 mly_map_command_sg, mc, 0);
1884 if (mc->mc_flags & MLY_CMD_DATAIN)
1885 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD);
1886 if (mc->mc_flags & MLY_CMD_DATAOUT)
1887 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE);
1889 mc->mc_flags |= MLY_CMD_MAPPED;
1892 /********************************************************************************
1893 * Unmap a command from controller-visible space
1896 mly_unmap_command(struct mly_command *mc)
1898 struct mly_softc *sc = mc->mc_sc;
1902 if (!(mc->mc_flags & MLY_CMD_MAPPED))
1905 /* does the command have a data buffer? */
1906 if (mc->mc_data != NULL) {
1907 if (mc->mc_flags & MLY_CMD_DATAIN)
1908 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD);
1909 if (mc->mc_flags & MLY_CMD_DATAOUT)
1910 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE);
1912 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap);
1914 mc->mc_flags &= ~MLY_CMD_MAPPED;
1918 /********************************************************************************
1919 ********************************************************************************
1921 ********************************************************************************
1922 ********************************************************************************/
1924 /********************************************************************************
1925 * Attach the physical and virtual SCSI busses to CAM.
1927 * Physical bus numbering starts from 0, virtual bus numbering from one greater
1928 * than the highest physical bus. Physical busses are only registered if
1929 * the kernel environment variable "hw.mly.register_physical_channels" is set.
1931 * When we refer to a "bus", we are referring to the bus number registered with
1932 * the SIM, whereas a "channel" is a channel number given to the adapter. In order
1933 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used
1937 mly_cam_attach(struct mly_softc *sc)
1939 struct cam_devq *devq;
1945 * Allocate a devq for all our channels combined.
1947 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) {
1948 mly_printf(sc, "can't allocate CAM SIM queue\n");
1953 * If physical channel registration has been requested, register these first.
1954 * Note that we enable tagged command queueing for physical channels.
1956 if (testenv("hw.mly.register_physical_channels")) {
1958 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) {
1960 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc,
1961 device_get_unit(sc->mly_dev),
1963 sc->mly_controllerinfo->maximum_parallel_commands,
1964 1, devq)) == NULL) {
1968 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) {
1970 mly_printf(sc, "CAM XPT phsyical channel registration failed\n");
1974 debug(1, "registered physical channel %d", chn);
1979 * Register our virtual channels, with bus numbers matching channel numbers.
1981 chn = sc->mly_controllerinfo->physical_channels_present;
1982 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) {
1983 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc,
1984 device_get_unit(sc->mly_dev),
1986 sc->mly_controllerinfo->maximum_parallel_commands,
1987 0, devq)) == NULL) {
1991 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) {
1993 mly_printf(sc, "CAM XPT virtual channel registration failed\n");
1997 debug(1, "registered virtual channel %d", chn);
2001 * This is the total number of channels that (might have been) registered with
2002 * CAM. Some may not have been; check the mly_cam_sim array to be certain.
2004 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present +
2005 sc->mly_controllerinfo->virtual_channels_present;
2010 /********************************************************************************
2014 mly_cam_detach(struct mly_softc *sc)
2021 for (i = 0; i < sc->mly_cam_channels; i++) {
2022 if (sc->mly_cam_sim[i] != NULL) {
2023 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i]));
2024 cam_sim_free(sc->mly_cam_sim[i], 0);
2028 if (sc->mly_cam_devq != NULL)
2029 cam_simq_free(sc->mly_cam_devq);
2032 /************************************************************************
2036 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target)
2042 if ((ccb = xpt_alloc_ccb()) == NULL) {
2043 mly_printf(sc, "rescan failed (can't allocate CCB)\n");
2046 if (xpt_create_path(&ccb->ccb_h.path, NULL,
2047 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) {
2048 mly_printf(sc, "rescan failed (can't create path)\n");
2052 debug(1, "rescan target %d:%d", bus, target);
2056 /********************************************************************************
2057 * Handle an action requested by CAM
2060 mly_cam_action(struct cam_sim *sim, union ccb *ccb)
2062 struct mly_softc *sc = cam_sim_softc(sim);
2065 MLY_ASSERT_LOCKED(sc);
2067 switch (ccb->ccb_h.func_code) {
2069 /* perform SCSI I/O */
2071 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio))
2075 /* perform geometry calculations */
2076 case XPT_CALC_GEOMETRY:
2078 struct ccb_calc_geometry *ccg = &ccb->ccg;
2079 u_int32_t secs_per_cylinder;
2081 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2083 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) {
2085 ccg->secs_per_track = 63;
2086 } else { /* MLY_BIOSGEOM_2G */
2088 ccg->secs_per_track = 32;
2090 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2091 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2092 ccb->ccb_h.status = CAM_REQ_CMP;
2096 /* handle path attribute inquiry */
2099 struct ccb_pathinq *cpi = &ccb->cpi;
2101 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2103 cpi->version_num = 1;
2104 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */
2105 cpi->target_sprt = 0;
2107 cpi->max_target = MLY_MAX_TARGETS - 1;
2108 cpi->max_lun = MLY_MAX_LUNS - 1;
2109 cpi->initiator_id = sc->mly_controllerparam->initiator_id;
2110 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2111 strlcpy(cpi->hba_vid, "Mylex", HBA_IDLEN);
2112 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2113 cpi->unit_number = cam_sim_unit(sim);
2114 cpi->bus_id = cam_sim_bus(sim);
2115 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
2116 cpi->transport = XPORT_SPI;
2117 cpi->transport_version = 2;
2118 cpi->protocol = PROTO_SCSI;
2119 cpi->protocol_version = SCSI_REV_2;
2120 ccb->ccb_h.status = CAM_REQ_CMP;
2124 case XPT_GET_TRAN_SETTINGS:
2126 struct ccb_trans_settings *cts = &ccb->cts;
2128 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
2129 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
2131 cts->protocol = PROTO_SCSI;
2132 cts->protocol_version = SCSI_REV_2;
2133 cts->transport = XPORT_SPI;
2134 cts->transport_version = 2;
2141 bus = cam_sim_bus(sim);
2142 target = cts->ccb_h.target_id;
2143 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
2144 /* logical device? */
2145 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) {
2146 /* nothing special for these */
2147 /* physical device? */
2148 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) {
2149 /* allow CAM to try tagged transactions */
2150 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
2151 scsi->valid |= CTS_SCSI_VALID_TQ;
2153 /* convert speed (MHz) to usec */
2154 if (sc->mly_btl[bus][target].mb_speed == 0) {
2155 spi->sync_period = 1000000 / 5;
2157 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed;
2160 /* convert bus width to CAM internal encoding */
2161 switch (sc->mly_btl[bus][target].mb_width) {
2163 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT;
2166 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
2170 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
2173 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH;
2175 /* not a device, bail out */
2177 cts->ccb_h.status = CAM_REQ_CMP_ERR;
2181 /* disconnect always OK */
2182 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
2183 spi->valid |= CTS_SPI_VALID_DISC;
2185 cts->ccb_h.status = CAM_REQ_CMP;
2189 default: /* we can't do this */
2190 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
2191 ccb->ccb_h.status = CAM_REQ_INVALID;
2198 /********************************************************************************
2199 * Handle an I/O operation requested by CAM
2202 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
2204 struct mly_softc *sc = cam_sim_softc(sim);
2205 struct mly_command *mc;
2206 struct mly_command_scsi_small *ss;
2210 bus = cam_sim_bus(sim);
2211 target = csio->ccb_h.target_id;
2213 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
2215 /* validate bus number */
2216 if (!MLY_BUS_IS_VALID(sc, bus)) {
2217 debug(0, " invalid bus %d", bus);
2218 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2221 /* check for I/O attempt to a protected device */
2222 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) {
2223 debug(2, " device protected");
2224 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2227 /* check for I/O attempt to nonexistent device */
2228 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) {
2229 debug(2, " device %d:%d does not exist", bus, target);
2230 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2233 /* XXX increase if/when we support large SCSI commands */
2234 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) {
2235 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB);
2236 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2239 /* check that the CDB pointer is not to a physical address */
2240 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
2241 debug(0, " CDB pointer is to physical address");
2242 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2245 /* abandon aborted ccbs or those that have failed validation */
2246 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
2247 debug(2, "abandoning CCB due to abort/validation failure");
2252 * Get a command, or push the ccb back to CAM and freeze the queue.
2254 if ((error = mly_alloc_command(sc, &mc))) {
2255 xpt_freeze_simq(sim, 1);
2256 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2257 sc->mly_qfrzn_cnt++;
2261 /* build the command */
2263 mc->mc_length = csio->dxfer_len;
2264 mc->mc_complete = mly_cam_complete;
2265 mc->mc_private = csio;
2266 mc->mc_flags |= MLY_CMD_CCB;
2267 /* XXX This code doesn't set the data direction in mc_flags. */
2269 /* save the bus number in the ccb for later recovery XXX should be a better way */
2270 csio->ccb_h.sim_priv.entries[0].field = bus;
2272 /* build the packet for the controller */
2273 ss = &mc->mc_packet->scsi_small;
2274 ss->opcode = MDACMD_SCSI;
2275 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT)
2276 ss->command_control.disable_disconnect = 1;
2277 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
2278 ss->command_control.data_direction = MLY_CCB_WRITE;
2279 ss->data_size = csio->dxfer_len;
2280 ss->addr.phys.lun = csio->ccb_h.target_lun;
2281 ss->addr.phys.target = csio->ccb_h.target_id;
2282 ss->addr.phys.channel = bus;
2283 if (csio->ccb_h.timeout < (60 * 1000)) {
2284 ss->timeout.value = csio->ccb_h.timeout / 1000;
2285 ss->timeout.scale = MLY_TIMEOUT_SECONDS;
2286 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) {
2287 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000);
2288 ss->timeout.scale = MLY_TIMEOUT_MINUTES;
2290 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */
2291 ss->timeout.scale = MLY_TIMEOUT_HOURS;
2293 ss->maximum_sense_size = csio->sense_len;
2294 ss->cdb_length = csio->cdb_len;
2295 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
2296 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len);
2298 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len);
2301 /* give the command to the controller */
2302 if ((error = mly_start(mc))) {
2303 xpt_freeze_simq(sim, 1);
2304 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2305 sc->mly_qfrzn_cnt++;
2312 /********************************************************************************
2313 * Check for possibly-completed commands.
2316 mly_cam_poll(struct cam_sim *sim)
2318 struct mly_softc *sc = cam_sim_softc(sim);
2325 /********************************************************************************
2326 * Handle completion of a command - pass results back through the CCB
2329 mly_cam_complete(struct mly_command *mc)
2331 struct mly_softc *sc = mc->mc_sc;
2332 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private;
2333 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr;
2334 struct mly_btl *btl;
2340 csio->scsi_status = mc->mc_status;
2341 switch(mc->mc_status) {
2342 case SCSI_STATUS_OK:
2344 * In order to report logical device type and status, we overwrite
2345 * the result of the INQUIRY command to logical devices.
2347 bus = csio->ccb_h.sim_priv.entries[0].field;
2348 target = csio->ccb_h.target_id;
2349 /* XXX validate bus/target? */
2350 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) {
2351 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
2352 cmd = *csio->cdb_io.cdb_ptr;
2354 cmd = csio->cdb_io.cdb_bytes[0];
2356 if (cmd == INQUIRY) {
2357 btl = &sc->mly_btl[bus][target];
2358 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8);
2359 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16);
2360 padstr(inq->revision, "", 4);
2364 debug(2, "SCSI_STATUS_OK");
2365 csio->ccb_h.status = CAM_REQ_CMP;
2368 case SCSI_STATUS_CHECK_COND:
2369 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid);
2370 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR;
2371 bzero(&csio->sense_data, SSD_FULL_SIZE);
2372 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense);
2373 csio->sense_len = mc->mc_sense;
2374 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
2375 csio->resid = mc->mc_resid; /* XXX this is a signed value... */
2378 case SCSI_STATUS_BUSY:
2379 debug(1, "SCSI_STATUS_BUSY");
2380 csio->ccb_h.status = CAM_SCSI_BUSY;
2384 debug(1, "unknown status 0x%x", csio->scsi_status);
2385 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2389 if (sc->mly_qfrzn_cnt) {
2390 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
2391 sc->mly_qfrzn_cnt--;
2394 xpt_done((union ccb *)csio);
2395 mly_release_command(mc);
2398 /********************************************************************************
2399 * Find a peripheral attahed at (bus),(target)
2401 static struct cam_periph *
2402 mly_find_periph(struct mly_softc *sc, int bus, int target)
2404 struct cam_periph *periph;
2405 struct cam_path *path;
2408 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0);
2409 if (status == CAM_REQ_CMP) {
2410 periph = cam_periph_find(path, NULL);
2411 xpt_free_path(path);
2418 /********************************************************************************
2419 * Name the device at (bus)(target)
2422 mly_name_device(struct mly_softc *sc, int bus, int target)
2424 struct cam_periph *periph;
2426 if ((periph = mly_find_periph(sc, bus, target)) != NULL) {
2427 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number);
2430 sc->mly_btl[bus][target].mb_name[0] = 0;
2434 /********************************************************************************
2435 ********************************************************************************
2437 ********************************************************************************
2438 ********************************************************************************/
2440 /********************************************************************************
2441 * Handshake with the firmware while the card is being initialised.
2444 mly_fwhandshake(struct mly_softc *sc)
2446 u_int8_t error, param0, param1;
2451 /* set HM_STSACK and let the firmware initialise */
2452 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK);
2453 DELAY(1000); /* too short? */
2455 /* if HM_STSACK is still true, the controller is initialising */
2456 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK))
2458 mly_printf(sc, "controller initialisation started\n");
2460 /* spin waiting for initialisation to finish, or for a message to be delivered */
2461 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) {
2462 /* check for a message */
2463 if (MLY_ERROR_VALID(sc)) {
2464 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY;
2465 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox);
2466 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1);
2469 case MLY_MSG_SPINUP:
2471 mly_printf(sc, "drive spinup in progress\n");
2472 spinup = 1; /* only print this once (should print drive being spun?) */
2475 case MLY_MSG_RACE_RECOVERY_FAIL:
2476 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n");
2478 case MLY_MSG_RACE_IN_PROGRESS:
2479 mly_printf(sc, "mirror race recovery in progress\n");
2481 case MLY_MSG_RACE_ON_CRITICAL:
2482 mly_printf(sc, "mirror race recovery on a critical drive\n");
2484 case MLY_MSG_PARITY_ERROR:
2485 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n");
2488 mly_printf(sc, "unknown initialisation code 0x%x\n", error);
2495 /********************************************************************************
2496 ********************************************************************************
2497 Debugging and Diagnostics
2498 ********************************************************************************
2499 ********************************************************************************/
2501 /********************************************************************************
2502 * Print some information about the controller.
2505 mly_describe_controller(struct mly_softc *sc)
2507 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo;
2509 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n",
2510 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "",
2511 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */
2512 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day,
2516 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n",
2517 mly_describe_code(mly_table_oemname, mi->oem_information),
2518 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type,
2519 mi->interface_speed, mi->interface_width, mi->interface_name);
2520 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n",
2521 mi->memory_size, mi->memory_speed, mi->memory_width,
2522 mly_describe_code(mly_table_memorytype, mi->memory_type),
2523 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "",
2525 mly_printf(sc, "CPU: %s @ %dMHz\n",
2526 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed);
2527 if (mi->l2cache_size != 0)
2528 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size);
2529 if (mi->exmemory_size != 0)
2530 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n",
2531 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width,
2532 mly_describe_code(mly_table_memorytype, mi->exmemory_type),
2533 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": "");
2534 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed");
2535 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n",
2536 mi->maximum_block_count, mi->maximum_sg_entries);
2537 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n",
2538 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline);
2539 mly_printf(sc, "physical devices present %d\n",
2540 mi->physical_devices_present);
2541 mly_printf(sc, "physical disks present/offline %d/%d\n",
2542 mi->physical_disks_present, mi->physical_disks_offline);
2543 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n",
2544 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s",
2545 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s",
2546 mi->virtual_channels_possible);
2547 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands);
2548 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n",
2549 mi->flash_size, mi->flash_age, mi->flash_maximum_age);
2554 /********************************************************************************
2555 * Print some controller state
2558 mly_printstate(struct mly_softc *sc)
2560 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n",
2561 MLY_GET_REG(sc, sc->mly_idbr),
2562 MLY_GET_REG(sc, sc->mly_odbr),
2563 MLY_GET_REG(sc, sc->mly_error_status),
2566 sc->mly_error_status);
2567 mly_printf(sc, "IMASK %02x ISTATUS %02x\n",
2568 MLY_GET_REG(sc, sc->mly_interrupt_mask),
2569 MLY_GET_REG(sc, sc->mly_interrupt_status));
2570 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n",
2571 MLY_GET_REG(sc, sc->mly_command_mailbox),
2572 MLY_GET_REG(sc, sc->mly_command_mailbox + 1),
2573 MLY_GET_REG(sc, sc->mly_command_mailbox + 2),
2574 MLY_GET_REG(sc, sc->mly_command_mailbox + 3),
2575 MLY_GET_REG(sc, sc->mly_command_mailbox + 4),
2576 MLY_GET_REG(sc, sc->mly_command_mailbox + 5),
2577 MLY_GET_REG(sc, sc->mly_command_mailbox + 6),
2578 MLY_GET_REG(sc, sc->mly_command_mailbox + 7));
2579 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n",
2580 MLY_GET_REG(sc, sc->mly_status_mailbox),
2581 MLY_GET_REG(sc, sc->mly_status_mailbox + 1),
2582 MLY_GET_REG(sc, sc->mly_status_mailbox + 2),
2583 MLY_GET_REG(sc, sc->mly_status_mailbox + 3),
2584 MLY_GET_REG(sc, sc->mly_status_mailbox + 4),
2585 MLY_GET_REG(sc, sc->mly_status_mailbox + 5),
2586 MLY_GET_REG(sc, sc->mly_status_mailbox + 6),
2587 MLY_GET_REG(sc, sc->mly_status_mailbox + 7));
2588 mly_printf(sc, " %04x %08x\n",
2589 MLY_GET_REG2(sc, sc->mly_status_mailbox),
2590 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4));
2593 struct mly_softc *mly_softc0 = NULL;
2595 mly_printstate0(void)
2597 if (mly_softc0 != NULL)
2598 mly_printstate(mly_softc0);
2601 /********************************************************************************
2605 mly_print_command(struct mly_command *mc)
2607 struct mly_softc *sc = mc->mc_sc;
2609 mly_printf(sc, "COMMAND @ %p\n", mc);
2610 mly_printf(sc, " slot %d\n", mc->mc_slot);
2611 mly_printf(sc, " status 0x%x\n", mc->mc_status);
2612 mly_printf(sc, " sense len %d\n", mc->mc_sense);
2613 mly_printf(sc, " resid %d\n", mc->mc_resid);
2614 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys);
2615 if (mc->mc_packet != NULL)
2616 mly_print_packet(mc);
2617 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length);
2618 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n");
2619 mly_printf(sc, " complete %p\n", mc->mc_complete);
2620 mly_printf(sc, " private %p\n", mc->mc_private);
2623 /********************************************************************************
2624 * Print a command packet
2627 mly_print_packet(struct mly_command *mc)
2629 struct mly_softc *sc = mc->mc_sc;
2630 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet;
2631 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet;
2632 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet;
2633 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet;
2636 mly_printf(sc, " command_id %d\n", ge->command_id);
2637 mly_printf(sc, " opcode %d\n", ge->opcode);
2638 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n",
2639 ge->command_control.force_unit_access,
2640 ge->command_control.disable_page_out,
2641 ge->command_control.extended_sg_table,
2642 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ",
2643 ge->command_control.no_auto_sense,
2644 ge->command_control.disable_disconnect);
2645 mly_printf(sc, " data_size %d\n", ge->data_size);
2646 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address);
2647 mly_printf(sc, " lun %d\n", ge->addr.phys.lun);
2648 mly_printf(sc, " target %d\n", ge->addr.phys.target);
2649 mly_printf(sc, " channel %d\n", ge->addr.phys.channel);
2650 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev);
2651 mly_printf(sc, " controller %d\n", ge->addr.phys.controller);
2652 mly_printf(sc, " timeout %d %s\n",
2654 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" :
2655 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours"));
2656 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size);
2657 switch(ge->opcode) {
2660 mly_printf(sc, " cdb length %d\n", ss->cdb_length);
2661 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " ");
2665 case MDACMD_SCSILCPT:
2666 mly_printf(sc, " cdb length %d\n", sl->cdb_length);
2667 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr);
2671 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl);
2672 switch(io->sub_ioctl) {
2673 case MDACIOCTL_SETMEMORYMAILBOX:
2674 mly_printf(sc, " health_buffer_size %d\n",
2675 io->param.setmemorymailbox.health_buffer_size);
2676 mly_printf(sc, " health_buffer_phys 0x%llx\n",
2677 io->param.setmemorymailbox.health_buffer_physaddr);
2678 mly_printf(sc, " command_mailbox 0x%llx\n",
2679 io->param.setmemorymailbox.command_mailbox_physaddr);
2680 mly_printf(sc, " status_mailbox 0x%llx\n",
2681 io->param.setmemorymailbox.status_mailbox_physaddr);
2685 case MDACIOCTL_SETREALTIMECLOCK:
2686 case MDACIOCTL_GETHEALTHSTATUS:
2687 case MDACIOCTL_GETCONTROLLERINFO:
2688 case MDACIOCTL_GETLOGDEVINFOVALID:
2689 case MDACIOCTL_GETPHYSDEVINFOVALID:
2690 case MDACIOCTL_GETPHYSDEVSTATISTICS:
2691 case MDACIOCTL_GETLOGDEVSTATISTICS:
2692 case MDACIOCTL_GETCONTROLLERSTATISTICS:
2693 case MDACIOCTL_GETBDT_FOR_SYSDRIVE:
2694 case MDACIOCTL_CREATENEWCONF:
2695 case MDACIOCTL_ADDNEWCONF:
2696 case MDACIOCTL_GETDEVCONFINFO:
2697 case MDACIOCTL_GETFREESPACELIST:
2698 case MDACIOCTL_MORE:
2699 case MDACIOCTL_SETPHYSDEVPARAMETER:
2700 case MDACIOCTL_GETPHYSDEVPARAMETER:
2701 case MDACIOCTL_GETLOGDEVPARAMETER:
2702 case MDACIOCTL_SETLOGDEVPARAMETER:
2703 mly_printf(sc, " param %10D\n", io->param.data.param, " ");
2707 case MDACIOCTL_GETEVENT:
2708 mly_printf(sc, " event %d\n",
2709 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16));
2713 case MDACIOCTL_SETRAIDDEVSTATE:
2714 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state);
2718 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV:
2719 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device);
2720 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller);
2721 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel);
2722 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target);
2723 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun);
2727 case MDACIOCTL_GETGROUPCONFINFO:
2728 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group);
2732 case MDACIOCTL_GET_SUBSYSTEM_DATA:
2733 case MDACIOCTL_SET_SUBSYSTEM_DATA:
2734 case MDACIOCTL_STARTDISOCVERY:
2735 case MDACIOCTL_INITPHYSDEVSTART:
2736 case MDACIOCTL_INITPHYSDEVSTOP:
2737 case MDACIOCTL_INITRAIDDEVSTART:
2738 case MDACIOCTL_INITRAIDDEVSTOP:
2739 case MDACIOCTL_REBUILDRAIDDEVSTART:
2740 case MDACIOCTL_REBUILDRAIDDEVSTOP:
2741 case MDACIOCTL_MAKECONSISTENTDATASTART:
2742 case MDACIOCTL_MAKECONSISTENTDATASTOP:
2743 case MDACIOCTL_CONSISTENCYCHECKSTART:
2744 case MDACIOCTL_CONSISTENCYCHECKSTOP:
2745 case MDACIOCTL_RESETDEVICE:
2746 case MDACIOCTL_FLUSHDEVICEDATA:
2747 case MDACIOCTL_PAUSEDEVICE:
2748 case MDACIOCTL_UNPAUSEDEVICE:
2749 case MDACIOCTL_LOCATEDEVICE:
2750 case MDACIOCTL_SETMASTERSLAVEMODE:
2751 case MDACIOCTL_DELETERAIDDEV:
2752 case MDACIOCTL_REPLACEINTERNALDEV:
2753 case MDACIOCTL_CLEARCONF:
2754 case MDACIOCTL_GETCONTROLLERPARAMETER:
2755 case MDACIOCTL_SETCONTRLLERPARAMETER:
2756 case MDACIOCTL_CLEARCONFSUSPMODE:
2757 case MDACIOCTL_STOREIMAGE:
2758 case MDACIOCTL_READIMAGE:
2759 case MDACIOCTL_FLASHIMAGES:
2760 case MDACIOCTL_RENAMERAIDDEV:
2761 default: /* no idea what to print */
2767 case MDACMD_IOCTLCHECK:
2768 case MDACMD_MEMCOPY:
2771 break; /* print nothing */
2774 if (ge->command_control.extended_sg_table) {
2775 mly_printf(sc, " sg table 0x%llx/%d\n",
2776 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]);
2778 mly_printf(sc, " 0000 0x%llx/%lld\n",
2779 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length);
2780 mly_printf(sc, " 0001 0x%llx/%lld\n",
2781 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length);
2786 /********************************************************************************
2787 * Panic in a slightly informative fashion
2790 mly_panic(struct mly_softc *sc, char *reason)
2796 /********************************************************************************
2797 * Print queue statistics, callable from DDB.
2800 mly_print_controller(int controller)
2802 struct mly_softc *sc;
2804 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) {
2805 printf("mly: controller %d invalid\n", controller);
2807 device_printf(sc->mly_dev, "queue curr max\n");
2808 device_printf(sc->mly_dev, "free %04d/%04d\n",
2809 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max);
2810 device_printf(sc->mly_dev, "busy %04d/%04d\n",
2811 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max);
2812 device_printf(sc->mly_dev, "complete %04d/%04d\n",
2813 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max);
2819 /********************************************************************************
2820 ********************************************************************************
2821 Control device interface
2822 ********************************************************************************
2823 ********************************************************************************/
2825 /********************************************************************************
2826 * Accept an open operation on the control device.
2829 mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td)
2831 struct mly_softc *sc = dev->si_drv1;
2834 sc->mly_state |= MLY_STATE_OPEN;
2839 /********************************************************************************
2840 * Accept the last close on the control device.
2843 mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td)
2845 struct mly_softc *sc = dev->si_drv1;
2848 sc->mly_state &= ~MLY_STATE_OPEN;
2853 /********************************************************************************
2854 * Handle controller-specific control operations.
2857 mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr,
2858 int32_t flag, struct thread *td)
2860 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1;
2861 struct mly_user_command *uc = (struct mly_user_command *)addr;
2862 struct mly_user_health *uh = (struct mly_user_health *)addr;
2866 return(mly_user_command(sc, uc));
2868 return(mly_user_health(sc, uh));
2874 /********************************************************************************
2875 * Execute a command passed in from userspace.
2877 * The control structure contains the actual command for the controller, as well
2878 * as the user-space data pointer and data size, and an optional sense buffer
2879 * size/pointer. On completion, the data size is adjusted to the command
2880 * residual, and the sense buffer size to the size of the returned sense data.
2884 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc)
2886 struct mly_command *mc;
2889 /* allocate a command */
2891 if (mly_alloc_command(sc, &mc)) {
2893 return (ENOMEM); /* XXX Linux version will wait for a command */
2897 /* handle data size/direction */
2898 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength;
2899 if (mc->mc_length > 0) {
2900 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) {
2905 if (uc->DataTransferLength > 0) {
2906 mc->mc_flags |= MLY_CMD_DATAIN;
2907 bzero(mc->mc_data, mc->mc_length);
2909 if (uc->DataTransferLength < 0) {
2910 mc->mc_flags |= MLY_CMD_DATAOUT;
2911 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0)
2915 /* copy the controller command */
2916 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox));
2918 /* clear command completion handler so that we get woken up */
2919 mc->mc_complete = NULL;
2921 /* execute the command */
2923 if ((error = mly_start(mc)) != 0) {
2927 while (!(mc->mc_flags & MLY_CMD_COMPLETE))
2928 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlyioctl", 0);
2931 /* return the data to userspace */
2932 if (uc->DataTransferLength > 0)
2933 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0)
2936 /* return the sense buffer to userspace */
2937 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) {
2938 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer,
2939 min(uc->RequestSenseLength, mc->mc_sense))) != 0)
2943 /* return command results to userspace (caller will copy out) */
2944 uc->DataTransferLength = mc->mc_resid;
2945 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense);
2946 uc->CommandStatus = mc->mc_status;
2950 if (mc->mc_data != NULL)
2951 free(mc->mc_data, M_DEVBUF);
2953 mly_release_command(mc);
2958 /********************************************************************************
2959 * Return health status to userspace. If the health change index in the user
2960 * structure does not match that currently exported by the controller, we
2961 * return the current status immediately. Otherwise, we block until either
2962 * interrupted or new status is delivered.
2965 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh)
2967 struct mly_health_status mh;
2970 /* fetch the current health status from userspace */
2971 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0)
2974 /* spin waiting for a status update */
2976 error = EWOULDBLOCK;
2977 while ((error != 0) && (sc->mly_event_change == mh.change_counter))
2978 error = mtx_sleep(&sc->mly_event_change, &sc->mly_lock, PRIBIO | PCATCH,
2980 mh = sc->mly_mmbox->mmm_health.status;
2983 /* copy the controller's health status buffer out */
2984 error = copyout(&mh, uh->HealthStatusBuffer, sizeof(mh));
2990 mly_timeout(void *arg)
2992 struct mly_softc *sc;
2993 struct mly_command *mc;
2997 MLY_ASSERT_LOCKED(sc);
2998 deadline = time_second - MLY_CMD_TIMEOUT;
2999 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) {
3000 if ((mc->mc_timestamp < deadline)) {
3001 device_printf(sc->mly_dev,
3002 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc,
3003 (int)(time_second - mc->mc_timestamp));
3007 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, mly_timeout, sc);