2 * Copyright (c) 1999 Michael Smith
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Driver for the Mylex DAC960 family of RAID controllers.
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/kernel.h>
42 #include <machine/resource.h>
43 #include <machine/bus.h>
44 #include <machine/clock.h>
47 #include <geom/geom_disk.h>
49 #include <dev/mlx/mlx_compat.h>
50 #include <dev/mlx/mlxio.h>
51 #include <dev/mlx/mlxvar.h>
52 #include <dev/mlx/mlxreg.h>
54 static struct cdevsw mlx_cdevsw = {
55 .d_version = D_VERSION,
56 .d_flags = D_NEEDGIANT,
63 devclass_t mlx_devclass;
66 * Per-interface accessor methods
68 static int mlx_v3_tryqueue(struct mlx_softc *sc, struct mlx_command *mc);
69 static int mlx_v3_findcomplete(struct mlx_softc *sc, u_int8_t *slot, u_int16_t *status);
70 static void mlx_v3_intaction(struct mlx_softc *sc, int action);
71 static int mlx_v3_fw_handshake(struct mlx_softc *sc, int *error, int *param1, int *param2);
73 static int mlx_v4_tryqueue(struct mlx_softc *sc, struct mlx_command *mc);
74 static int mlx_v4_findcomplete(struct mlx_softc *sc, u_int8_t *slot, u_int16_t *status);
75 static void mlx_v4_intaction(struct mlx_softc *sc, int action);
76 static int mlx_v4_fw_handshake(struct mlx_softc *sc, int *error, int *param1, int *param2);
78 static int mlx_v5_tryqueue(struct mlx_softc *sc, struct mlx_command *mc);
79 static int mlx_v5_findcomplete(struct mlx_softc *sc, u_int8_t *slot, u_int16_t *status);
80 static void mlx_v5_intaction(struct mlx_softc *sc, int action);
81 static int mlx_v5_fw_handshake(struct mlx_softc *sc, int *error, int *param1, int *param2);
86 static void mlx_periodic(void *data);
87 static void mlx_periodic_enquiry(struct mlx_command *mc);
88 static void mlx_periodic_eventlog_poll(struct mlx_softc *sc);
89 static void mlx_periodic_eventlog_respond(struct mlx_command *mc);
90 static void mlx_periodic_rebuild(struct mlx_command *mc);
95 static void mlx_pause_action(struct mlx_softc *sc);
96 static void mlx_pause_done(struct mlx_command *mc);
101 static void *mlx_enquire(struct mlx_softc *sc, int command, size_t bufsize,
102 void (*complete)(struct mlx_command *mc));
103 static int mlx_flush(struct mlx_softc *sc);
104 static int mlx_check(struct mlx_softc *sc, int drive);
105 static int mlx_rebuild(struct mlx_softc *sc, int channel, int target);
106 static int mlx_wait_command(struct mlx_command *mc);
107 static int mlx_poll_command(struct mlx_command *mc);
108 void mlx_startio_cb(void *arg,
109 bus_dma_segment_t *segs,
110 int nsegments, int error);
111 static void mlx_startio(struct mlx_softc *sc);
112 static void mlx_completeio(struct mlx_command *mc);
113 static int mlx_user_command(struct mlx_softc *sc,
114 struct mlx_usercommand *mu);
115 void mlx_user_cb(void *arg, bus_dma_segment_t *segs,
116 int nsegments, int error);
119 * Command buffer allocation.
121 static struct mlx_command *mlx_alloccmd(struct mlx_softc *sc);
122 static void mlx_releasecmd(struct mlx_command *mc);
123 static void mlx_freecmd(struct mlx_command *mc);
126 * Command management.
128 static int mlx_getslot(struct mlx_command *mc);
129 static void mlx_setup_dmamap(struct mlx_command *mc,
130 bus_dma_segment_t *segs,
131 int nsegments, int error);
132 static void mlx_unmapcmd(struct mlx_command *mc);
133 static int mlx_start(struct mlx_command *mc);
134 static int mlx_done(struct mlx_softc *sc);
135 static void mlx_complete(struct mlx_softc *sc);
140 static char *mlx_diagnose_command(struct mlx_command *mc);
141 static void mlx_describe_controller(struct mlx_softc *sc);
142 static int mlx_fw_message(struct mlx_softc *sc, int status, int param1, int param2);
147 static struct mlx_sysdrive *mlx_findunit(struct mlx_softc *sc, int unit);
149 /********************************************************************************
150 ********************************************************************************
152 ********************************************************************************
153 ********************************************************************************/
155 /********************************************************************************
156 * Free all of the resources associated with (sc)
158 * Should not be called if the controller is active.
161 mlx_free(struct mlx_softc *sc)
163 struct mlx_command *mc;
167 /* cancel status timeout */
168 untimeout(mlx_periodic, sc, sc->mlx_timeout);
170 /* throw away any command buffers */
171 while ((mc = TAILQ_FIRST(&sc->mlx_freecmds)) != NULL) {
172 TAILQ_REMOVE(&sc->mlx_freecmds, mc, mc_link);
176 /* destroy data-transfer DMA tag */
177 if (sc->mlx_buffer_dmat)
178 bus_dma_tag_destroy(sc->mlx_buffer_dmat);
180 /* free and destroy DMA memory and tag for s/g lists */
182 bus_dmamem_free(sc->mlx_sg_dmat, sc->mlx_sgtable, sc->mlx_sg_dmamap);
184 bus_dma_tag_destroy(sc->mlx_sg_dmat);
186 /* disconnect the interrupt handler */
188 bus_teardown_intr(sc->mlx_dev, sc->mlx_irq, sc->mlx_intr);
189 if (sc->mlx_irq != NULL)
190 bus_release_resource(sc->mlx_dev, SYS_RES_IRQ, 0, sc->mlx_irq);
192 /* destroy the parent DMA tag */
193 if (sc->mlx_parent_dmat)
194 bus_dma_tag_destroy(sc->mlx_parent_dmat);
196 /* release the register window mapping */
197 if (sc->mlx_mem != NULL)
198 bus_release_resource(sc->mlx_dev, sc->mlx_mem_type, sc->mlx_mem_rid, sc->mlx_mem);
200 /* free controller enquiry data */
201 if (sc->mlx_enq2 != NULL)
202 free(sc->mlx_enq2, M_DEVBUF);
204 /* destroy control device */
205 if (sc->mlx_dev_t != (struct cdev *)NULL)
206 destroy_dev(sc->mlx_dev_t);
209 /********************************************************************************
210 * Map the scatter/gather table into bus space
213 mlx_dma_map_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
215 struct mlx_softc *sc = (struct mlx_softc *)arg;
219 /* save base of s/g table's address in bus space */
220 sc->mlx_sgbusaddr = segs->ds_addr;
224 mlx_sglist_map(struct mlx_softc *sc)
231 /* destroy any existing mappings */
233 bus_dmamem_free(sc->mlx_sg_dmat, sc->mlx_sgtable, sc->mlx_sg_dmamap);
235 bus_dma_tag_destroy(sc->mlx_sg_dmat);
238 * Create a single tag describing a region large enough to hold all of
239 * the s/g lists we will need. If we're called early on, we don't know how
240 * many commands we're going to be asked to support, so only allocate enough
243 if (sc->mlx_enq2 == NULL) {
246 ncmd = sc->mlx_enq2->me_max_commands;
248 segsize = sizeof(struct mlx_sgentry) * MLX_NSEG * ncmd;
249 error = bus_dma_tag_create(sc->mlx_parent_dmat, /* parent */
250 1, 0, /* alignment,boundary */
251 BUS_SPACE_MAXADDR, /* lowaddr */
252 BUS_SPACE_MAXADDR, /* highaddr */
253 NULL, NULL, /* filter, filterarg */
254 segsize, 1, /* maxsize, nsegments */
255 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
257 NULL, NULL, /* lockfunc, lockarg */
260 device_printf(sc->mlx_dev, "can't allocate scatter/gather DMA tag\n");
265 * Allocate enough s/g maps for all commands and permanently map them into
266 * controller-visible space.
268 * XXX this assumes we can get enough space for all the s/g maps in one
269 * contiguous slab. We may need to switch to a more complex arrangement
270 * where we allocate in smaller chunks and keep a lookup table from slot
273 error = bus_dmamem_alloc(sc->mlx_sg_dmat, (void **)&sc->mlx_sgtable,
274 BUS_DMA_NOWAIT, &sc->mlx_sg_dmamap);
276 device_printf(sc->mlx_dev, "can't allocate s/g table\n");
279 (void)bus_dmamap_load(sc->mlx_sg_dmat, sc->mlx_sg_dmamap, sc->mlx_sgtable,
280 segsize, mlx_dma_map_sg, sc, 0);
284 /********************************************************************************
285 * Initialise the controller and softc
288 mlx_attach(struct mlx_softc *sc)
290 struct mlx_enquiry_old *meo;
291 int rid, error, fwminor, hscode, hserror, hsparam1, hsparam2, hsmsg;
296 * Initialise per-controller queues.
298 TAILQ_INIT(&sc->mlx_work);
299 TAILQ_INIT(&sc->mlx_freecmds);
300 MLX_BIO_QINIT(sc->mlx_bioq);
303 * Select accessor methods based on controller interface type.
305 switch(sc->mlx_iftype) {
308 sc->mlx_tryqueue = mlx_v3_tryqueue;
309 sc->mlx_findcomplete = mlx_v3_findcomplete;
310 sc->mlx_intaction = mlx_v3_intaction;
311 sc->mlx_fw_handshake = mlx_v3_fw_handshake;
314 sc->mlx_tryqueue = mlx_v4_tryqueue;
315 sc->mlx_findcomplete = mlx_v4_findcomplete;
316 sc->mlx_intaction = mlx_v4_intaction;
317 sc->mlx_fw_handshake = mlx_v4_fw_handshake;
320 sc->mlx_tryqueue = mlx_v5_tryqueue;
321 sc->mlx_findcomplete = mlx_v5_findcomplete;
322 sc->mlx_intaction = mlx_v5_intaction;
323 sc->mlx_fw_handshake = mlx_v5_fw_handshake;
326 return(ENXIO); /* should never happen */
329 /* disable interrupts before we start talking to the controller */
330 sc->mlx_intaction(sc, MLX_INTACTION_DISABLE);
333 * Wait for the controller to come ready, handshake with the firmware if required.
334 * This is typically only necessary on platforms where the controller BIOS does not
339 while ((hscode = sc->mlx_fw_handshake(sc, &hserror, &hsparam1, &hsparam2)) != 0) {
340 /* report first time around... */
342 device_printf(sc->mlx_dev, "controller initialisation in progress...\n");
345 /* did we get a real message? */
347 hscode = mlx_fw_message(sc, hserror, hsparam1, hsparam2);
348 /* fatal initialisation error? */
355 device_printf(sc->mlx_dev, "initialisation complete.\n");
358 * Allocate and connect our interrupt.
361 sc->mlx_irq = bus_alloc_resource_any(sc->mlx_dev, SYS_RES_IRQ, &rid,
362 RF_SHAREABLE | RF_ACTIVE);
363 if (sc->mlx_irq == NULL) {
364 device_printf(sc->mlx_dev, "can't allocate interrupt\n");
367 error = bus_setup_intr(sc->mlx_dev, sc->mlx_irq, INTR_TYPE_BIO | INTR_ENTROPY, NULL, mlx_intr, sc, &sc->mlx_intr);
369 device_printf(sc->mlx_dev, "can't set up interrupt\n");
374 * Create DMA tag for mapping buffers into controller-addressable space.
376 error = bus_dma_tag_create(sc->mlx_parent_dmat, /* parent */
377 1, 0, /* align, boundary */
378 BUS_SPACE_MAXADDR, /* lowaddr */
379 BUS_SPACE_MAXADDR, /* highaddr */
380 NULL, NULL, /* filter, filterarg */
381 MLX_MAXPHYS, /* maxsize */
382 MLX_NSEG, /* nsegments */
383 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
385 busdma_lock_mutex, /* lockfunc */
386 &Giant, /* lockarg */
387 &sc->mlx_buffer_dmat);
389 device_printf(sc->mlx_dev, "can't allocate buffer DMA tag\n");
394 * Create some initial scatter/gather mappings so we can run the probe
397 error = mlx_sglist_map(sc);
399 device_printf(sc->mlx_dev, "can't make initial s/g list mapping\n");
404 * We don't (yet) know where the event log is up to.
406 sc->mlx_currevent = -1;
409 * Obtain controller feature information
411 if ((sc->mlx_enq2 = mlx_enquire(sc, MLX_CMD_ENQUIRY2, sizeof(struct mlx_enquiry2), NULL)) == NULL) {
412 device_printf(sc->mlx_dev, "ENQUIRY2 failed\n");
417 * Do quirk/feature related things.
419 fwminor = (sc->mlx_enq2->me_firmware_id >> 8) & 0xff;
420 switch(sc->mlx_iftype) {
422 /* These controllers don't report the firmware version in the ENQUIRY2 response */
423 if ((meo = mlx_enquire(sc, MLX_CMD_ENQUIRY_OLD, sizeof(struct mlx_enquiry_old), NULL)) == NULL) {
424 device_printf(sc->mlx_dev, "ENQUIRY_OLD failed\n");
427 sc->mlx_enq2->me_firmware_id = ('0' << 24) | (0 << 16) | (meo->me_fwminor << 8) | meo->me_fwmajor;
429 /* XXX require 2.42 or better (PCI) or 2.14 or better (EISA) */
430 if (meo->me_fwminor < 42) {
431 device_printf(sc->mlx_dev, " *** WARNING *** This firmware revision is not recommended\n");
432 device_printf(sc->mlx_dev, " *** WARNING *** Use revision 2.42 or later\n");
437 /* XXX certify 3.52? */
439 device_printf(sc->mlx_dev, " *** WARNING *** This firmware revision is not recommended\n");
440 device_printf(sc->mlx_dev, " *** WARNING *** Use revision 3.51 or later\n");
444 /* XXX certify firmware versions? */
446 device_printf(sc->mlx_dev, " *** WARNING *** This firmware revision is not recommended\n");
447 device_printf(sc->mlx_dev, " *** WARNING *** Use revision 4.06 or later\n");
452 device_printf(sc->mlx_dev, " *** WARNING *** This firmware revision is not recommended\n");
453 device_printf(sc->mlx_dev, " *** WARNING *** Use revision 5.07 or later\n");
457 return(ENXIO); /* should never happen */
461 * Create the final scatter/gather mappings now that we have characterised the controller.
463 error = mlx_sglist_map(sc);
465 device_printf(sc->mlx_dev, "can't make final s/g list mapping\n");
470 * No user-requested background operation is in progress.
472 sc->mlx_background = 0;
473 sc->mlx_rebuildstat.rs_code = MLX_REBUILDSTAT_IDLE;
476 * Create the control device.
478 sc->mlx_dev_t = make_dev(&mlx_cdevsw, 0, UID_ROOT, GID_OPERATOR,
479 S_IRUSR | S_IWUSR, "mlx%d", device_get_unit(sc->mlx_dev));
480 sc->mlx_dev_t->si_drv1 = sc;
483 * Start the timeout routine.
485 sc->mlx_timeout = timeout(mlx_periodic, sc, hz);
487 /* print a little information about the controller */
488 mlx_describe_controller(sc);
493 /********************************************************************************
494 * Locate disk resources and attach children to them.
497 mlx_startup(struct mlx_softc *sc)
499 struct mlx_enq_sys_drive *mes;
500 struct mlx_sysdrive *dr;
506 * Scan all the system drives and attach children for those that
507 * don't currently have them.
509 mes = mlx_enquire(sc, MLX_CMD_ENQSYSDRIVE, sizeof(*mes) * MLX_MAXDRIVES, NULL);
511 device_printf(sc->mlx_dev, "error fetching drive status\n");
515 /* iterate over drives returned */
516 for (i = 0, dr = &sc->mlx_sysdrive[0];
517 (i < MLX_MAXDRIVES) && (mes[i].sd_size != 0xffffffff);
519 /* are we already attached to this drive? */
520 if (dr->ms_disk == 0) {
521 /* pick up drive information */
522 dr->ms_size = mes[i].sd_size;
523 dr->ms_raidlevel = mes[i].sd_raidlevel & 0xf;
524 dr->ms_state = mes[i].sd_state;
526 /* generate geometry information */
527 if (sc->mlx_geom == MLX_GEOM_128_32) {
530 dr->ms_cylinders = dr->ms_size / (128 * 32);
531 } else { /* MLX_GEOM_255/63 */
534 dr->ms_cylinders = dr->ms_size / (255 * 63);
536 dr->ms_disk = device_add_child(sc->mlx_dev, /*"mlxd"*/NULL, -1);
537 if (dr->ms_disk == 0)
538 device_printf(sc->mlx_dev, "device_add_child failed\n");
539 device_set_ivars(dr->ms_disk, dr);
543 if ((error = bus_generic_attach(sc->mlx_dev)) != 0)
544 device_printf(sc->mlx_dev, "bus_generic_attach returned %d", error);
546 /* mark controller back up */
547 sc->mlx_state &= ~MLX_STATE_SHUTDOWN;
549 /* enable interrupts */
550 sc->mlx_intaction(sc, MLX_INTACTION_ENABLE);
553 /********************************************************************************
554 * Disconnect from the controller completely, in preparation for unload.
557 mlx_detach(device_t dev)
559 struct mlx_softc *sc = device_get_softc(dev);
560 struct mlxd_softc *mlxd;
567 if (sc->mlx_state & MLX_STATE_OPEN)
570 for (i = 0; i < MLX_MAXDRIVES; i++) {
571 if (sc->mlx_sysdrive[i].ms_disk != 0) {
572 mlxd = device_get_softc(sc->mlx_sysdrive[i].ms_disk);
573 if (mlxd->mlxd_flags & MLXD_OPEN) { /* drive is mounted, abort detach */
574 device_printf(sc->mlx_sysdrive[i].ms_disk, "still open, can't detach\n");
579 if ((error = mlx_shutdown(dev)))
590 /********************************************************************************
591 * Bring the controller down to a dormant state and detach all child devices.
593 * This function is called before detach, system shutdown, or before performing
594 * an operation which may add or delete system disks. (Call mlx_startup to
595 * resume normal operation.)
597 * Note that we can assume that the bioq on the controller is empty, as we won't
598 * allow shutdown if any device is open.
601 mlx_shutdown(device_t dev)
603 struct mlx_softc *sc = device_get_softc(dev);
611 sc->mlx_state |= MLX_STATE_SHUTDOWN;
612 sc->mlx_intaction(sc, MLX_INTACTION_DISABLE);
614 /* flush controller */
615 device_printf(sc->mlx_dev, "flushing cache...");
622 /* delete all our child devices */
623 for (i = 0; i < MLX_MAXDRIVES; i++) {
624 if (sc->mlx_sysdrive[i].ms_disk != 0) {
625 if ((error = device_delete_child(sc->mlx_dev, sc->mlx_sysdrive[i].ms_disk)) != 0)
627 sc->mlx_sysdrive[i].ms_disk = 0;
636 /********************************************************************************
637 * Bring the controller to a quiescent state, ready for system suspend.
640 mlx_suspend(device_t dev)
642 struct mlx_softc *sc = device_get_softc(dev);
648 sc->mlx_state |= MLX_STATE_SUSPEND;
650 /* flush controller */
651 device_printf(sc->mlx_dev, "flushing cache...");
652 printf("%s\n", mlx_flush(sc) ? "failed" : "done");
654 sc->mlx_intaction(sc, MLX_INTACTION_DISABLE);
660 /********************************************************************************
661 * Bring the controller back to a state ready for operation.
664 mlx_resume(device_t dev)
666 struct mlx_softc *sc = device_get_softc(dev);
670 sc->mlx_state &= ~MLX_STATE_SUSPEND;
671 sc->mlx_intaction(sc, MLX_INTACTION_ENABLE);
676 /*******************************************************************************
677 * Take an interrupt, or be poked by other code to look for interrupt-worthy
683 struct mlx_softc *sc = (struct mlx_softc *)arg;
687 /* collect finished commands, queue anything waiting */
691 /*******************************************************************************
692 * Receive a buf structure from a child device and queue it on a particular
693 * disk resource, then poke the disk resource to start as much work as it can.
696 mlx_submit_buf(struct mlx_softc *sc, mlx_bio *bp)
703 MLX_BIO_QINSERT(sc->mlx_bioq, bp);
710 /********************************************************************************
711 * Accept an open operation on the control device.
714 mlx_open(struct cdev *dev, int flags, int fmt, struct thread *td)
716 struct mlx_softc *sc = dev->si_drv1;
718 sc->mlx_state |= MLX_STATE_OPEN;
722 /********************************************************************************
723 * Accept the last close on the control device.
726 mlx_close(struct cdev *dev, int flags, int fmt, struct thread *td)
728 struct mlx_softc *sc = dev->si_drv1;
730 sc->mlx_state &= ~MLX_STATE_OPEN;
734 /********************************************************************************
735 * Handle controller-specific control operations.
738 mlx_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *td)
740 struct mlx_softc *sc = dev->si_drv1;
741 struct mlx_rebuild_request *rb = (struct mlx_rebuild_request *)addr;
742 struct mlx_rebuild_status *rs = (struct mlx_rebuild_status *)addr;
743 int *arg = (int *)addr;
744 struct mlx_pause *mp;
745 struct mlx_sysdrive *dr;
746 struct mlxd_softc *mlxd;
751 * Enumerate connected system drives; returns the first system drive's
752 * unit number if *arg is -1, or the next unit after *arg if it's
753 * a valid unit on this controller.
756 /* search system drives */
757 for (i = 0; i < MLX_MAXDRIVES; i++) {
758 /* is this one attached? */
759 if (sc->mlx_sysdrive[i].ms_disk != 0) {
760 /* looking for the next one we come across? */
762 *arg = device_get_unit(sc->mlx_sysdrive[i].ms_disk);
765 /* we want the one after this one */
766 if (*arg == device_get_unit(sc->mlx_sysdrive[i].ms_disk))
773 * Scan the controller to see whether new drives have appeared.
775 case MLX_RESCAN_DRIVES:
780 * Disconnect from the specified drive; it may be about to go
783 case MLX_DETACH_DRIVE: /* detach one drive */
785 if (((dr = mlx_findunit(sc, *arg)) == NULL) ||
786 ((mlxd = device_get_softc(dr->ms_disk)) == NULL))
789 device_printf(dr->ms_disk, "detaching...");
791 if (mlxd->mlxd_flags & MLXD_OPEN) {
796 /* flush controller */
803 if ((error = device_delete_child(sc->mlx_dev, dr->ms_disk)) != 0)
816 * Pause one or more SCSI channels for a period of time, to assist
817 * in the process of hot-swapping devices.
819 * Note that at least the 3.51 firmware on the DAC960PL doesn't seem
822 case MLX_PAUSE_CHANNEL: /* schedule a channel pause */
823 /* Does this command work on this firmware? */
824 if (!(sc->mlx_feature & MLX_FEAT_PAUSEWORKS))
827 mp = (struct mlx_pause *)addr;
828 if ((mp->mp_which == MLX_PAUSE_CANCEL) && (sc->mlx_pause.mp_when != 0)) {
829 /* cancel a pending pause operation */
830 sc->mlx_pause.mp_which = 0;
832 /* fix for legal channels */
833 mp->mp_which &= ((1 << sc->mlx_enq2->me_actual_channels) -1);
834 /* check time values */
835 if ((mp->mp_when < 0) || (mp->mp_when > 3600))
837 if ((mp->mp_howlong < 1) || (mp->mp_howlong > (0xf * 30)))
840 /* check for a pause currently running */
841 if ((sc->mlx_pause.mp_which != 0) && (sc->mlx_pause.mp_when == 0))
844 /* looks ok, go with it */
845 sc->mlx_pause.mp_which = mp->mp_which;
846 sc->mlx_pause.mp_when = time_second + mp->mp_when;
847 sc->mlx_pause.mp_howlong = sc->mlx_pause.mp_when + mp->mp_howlong;
852 * Accept a command passthrough-style.
855 return(mlx_user_command(sc, (struct mlx_usercommand *)addr));
858 * Start a rebuild on a given SCSI disk
860 case MLX_REBUILDASYNC:
861 if (sc->mlx_background != 0) {
862 rb->rr_status = 0x0106;
865 rb->rr_status = mlx_rebuild(sc, rb->rr_channel, rb->rr_target);
866 switch (rb->rr_status) {
871 error = ENOMEM; /* couldn't set up the command */
890 sc->mlx_background = MLX_BACKGROUND_REBUILD;
894 * Get the status of the current rebuild or consistency check.
896 case MLX_REBUILDSTAT:
897 *rs = sc->mlx_rebuildstat;
901 * Return the per-controller system drive number matching the
902 * disk device number in (arg), if it happens to belong to us.
904 case MLX_GET_SYSDRIVE:
906 mlxd = (struct mlxd_softc *)devclass_get_softc(mlxd_devclass, *arg);
907 if ((mlxd != NULL) && (mlxd->mlxd_drive >= sc->mlx_sysdrive) &&
908 (mlxd->mlxd_drive < (sc->mlx_sysdrive + MLX_MAXDRIVES))) {
910 *arg = mlxd->mlxd_drive - sc->mlx_sysdrive;
919 /********************************************************************************
920 * Handle operations requested by a System Drive connected to this controller.
923 mlx_submit_ioctl(struct mlx_softc *sc, struct mlx_sysdrive *drive, u_long cmd,
924 caddr_t addr, int32_t flag, struct thread *td)
926 int *arg = (int *)addr;
931 * Return the current status of this drive.
934 *arg = drive->ms_state;
938 * Start a background consistency check on this drive.
940 case MLXD_CHECKASYNC: /* start a background consistency check */
941 if (sc->mlx_background != 0) {
945 result = mlx_check(sc, drive - &sc->mlx_sysdrive[0]);
951 error = ENOMEM; /* couldn't set up the command */
967 sc->mlx_background = MLX_BACKGROUND_CHECK;
976 /********************************************************************************
977 ********************************************************************************
979 ********************************************************************************
980 ********************************************************************************/
982 /********************************************************************************
983 * Fire off commands to periodically check the status of connected drives.
986 mlx_periodic(void *data)
988 struct mlx_softc *sc = (struct mlx_softc *)data;
995 if ((sc->mlx_pause.mp_which != 0) &&
996 (sc->mlx_pause.mp_when > 0) &&
997 (time_second >= sc->mlx_pause.mp_when)){
999 mlx_pause_action(sc); /* pause is running */
1000 sc->mlx_pause.mp_when = 0;
1004 * Bus pause still running?
1006 } else if ((sc->mlx_pause.mp_which != 0) &&
1007 (sc->mlx_pause.mp_when == 0)) {
1009 /* time to stop bus pause? */
1010 if (time_second >= sc->mlx_pause.mp_howlong) {
1011 mlx_pause_action(sc);
1012 sc->mlx_pause.mp_which = 0; /* pause is complete */
1015 sysbeep((time_second % 5) * 100 + 500, hz/8);
1019 * Run normal periodic activities?
1021 } else if (time_second > (sc->mlx_lastpoll + 10)) {
1022 sc->mlx_lastpoll = time_second;
1025 * Check controller status.
1027 * XXX Note that this may not actually launch a command in situations of high load.
1029 mlx_enquire(sc, (sc->mlx_iftype == MLX_IFTYPE_2) ? MLX_CMD_ENQUIRY_OLD : MLX_CMD_ENQUIRY,
1030 imax(sizeof(struct mlx_enquiry), sizeof(struct mlx_enquiry_old)), mlx_periodic_enquiry);
1033 * Check system drive status.
1035 * XXX This might be better left to event-driven detection, eg. I/O to an offline
1036 * drive will detect it's offline, rebuilds etc. should detect the drive is back
1039 mlx_enquire(sc, MLX_CMD_ENQSYSDRIVE, sizeof(struct mlx_enq_sys_drive) * MLX_MAXDRIVES,
1040 mlx_periodic_enquiry);
1044 /* get drive rebuild/check status */
1045 /* XXX should check sc->mlx_background if this is only valid while in progress */
1046 mlx_enquire(sc, MLX_CMD_REBUILDSTAT, sizeof(struct mlx_rebuild_stat), mlx_periodic_rebuild);
1048 /* deal with possibly-missed interrupts and timed-out commands */
1051 /* reschedule another poll next second or so */
1052 sc->mlx_timeout = timeout(mlx_periodic, sc, hz);
1055 /********************************************************************************
1056 * Handle the result of an ENQUIRY command instigated by periodic status polling.
1059 mlx_periodic_enquiry(struct mlx_command *mc)
1061 struct mlx_softc *sc = mc->mc_sc;
1065 /* Command completed OK? */
1066 if (mc->mc_status != 0) {
1067 device_printf(sc->mlx_dev, "periodic enquiry failed - %s\n", mlx_diagnose_command(mc));
1071 /* respond to command */
1072 switch(mc->mc_mailbox[0]) {
1074 * This is currently a bit fruitless, as we don't know how to extract the eventlog
1077 case MLX_CMD_ENQUIRY_OLD:
1079 struct mlx_enquiry *me = (struct mlx_enquiry *)mc->mc_data;
1080 struct mlx_enquiry_old *meo = (struct mlx_enquiry_old *)mc->mc_data;
1083 /* convert data in-place to new format */
1084 for (i = (sizeof(me->me_dead) / sizeof(me->me_dead[0])) - 1; i >= 0; i--) {
1085 me->me_dead[i].dd_chan = meo->me_dead[i].dd_chan;
1086 me->me_dead[i].dd_targ = meo->me_dead[i].dd_targ;
1088 me->me_misc_flags = 0;
1089 me->me_rebuild_count = meo->me_rebuild_count;
1090 me->me_dead_count = meo->me_dead_count;
1091 me->me_critical_sd_count = meo->me_critical_sd_count;
1092 me->me_event_log_seq_num = 0;
1093 me->me_offline_sd_count = meo->me_offline_sd_count;
1094 me->me_max_commands = meo->me_max_commands;
1095 me->me_rebuild_flag = meo->me_rebuild_flag;
1096 me->me_fwmajor = meo->me_fwmajor;
1097 me->me_fwminor = meo->me_fwminor;
1098 me->me_status_flags = meo->me_status_flags;
1099 me->me_flash_age = meo->me_flash_age;
1100 for (i = (sizeof(me->me_drvsize) / sizeof(me->me_drvsize[0])) - 1; i >= 0; i--) {
1101 if (i > ((sizeof(meo->me_drvsize) / sizeof(meo->me_drvsize[0])) - 1)) {
1102 me->me_drvsize[i] = 0; /* drive beyond supported range */
1104 me->me_drvsize[i] = meo->me_drvsize[i];
1107 me->me_num_sys_drvs = meo->me_num_sys_drvs;
1112 * Generic controller status update. We could do more with this than just
1113 * checking the event log.
1115 case MLX_CMD_ENQUIRY:
1117 struct mlx_enquiry *me = (struct mlx_enquiry *)mc->mc_data;
1119 if (sc->mlx_currevent == -1) {
1120 /* initialise our view of the event log */
1121 sc->mlx_currevent = sc->mlx_lastevent = me->me_event_log_seq_num;
1122 } else if ((me->me_event_log_seq_num != sc->mlx_lastevent) && !(sc->mlx_flags & MLX_EVENTLOG_BUSY)) {
1123 /* record where current events are up to */
1124 sc->mlx_currevent = me->me_event_log_seq_num;
1125 debug(1, "event log pointer was %d, now %d\n", sc->mlx_lastevent, sc->mlx_currevent);
1127 /* mark the event log as busy */
1128 atomic_set_int(&sc->mlx_flags, MLX_EVENTLOG_BUSY);
1130 /* drain new eventlog entries */
1131 mlx_periodic_eventlog_poll(sc);
1135 case MLX_CMD_ENQSYSDRIVE:
1137 struct mlx_enq_sys_drive *mes = (struct mlx_enq_sys_drive *)mc->mc_data;
1138 struct mlx_sysdrive *dr;
1141 for (i = 0, dr = &sc->mlx_sysdrive[0];
1142 (i < MLX_MAXDRIVES) && (mes[i].sd_size != 0xffffffff);
1145 /* has state been changed by controller? */
1146 if (dr->ms_state != mes[i].sd_state) {
1147 switch(mes[i].sd_state) {
1148 case MLX_SYSD_OFFLINE:
1149 device_printf(dr->ms_disk, "drive offline\n");
1151 case MLX_SYSD_ONLINE:
1152 device_printf(dr->ms_disk, "drive online\n");
1154 case MLX_SYSD_CRITICAL:
1155 device_printf(dr->ms_disk, "drive critical\n");
1158 /* save new state */
1159 dr->ms_state = mes[i].sd_state;
1165 device_printf(sc->mlx_dev, "%s: unknown command 0x%x", __func__, mc->mc_mailbox[0]);
1170 free(mc->mc_data, M_DEVBUF);
1175 mlx_eventlog_cb(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
1177 struct mlx_command *mc;
1179 mc = (struct mlx_command *)arg;
1180 mlx_setup_dmamap(mc, segs, nsegments, error);
1182 /* build the command to get one entry */
1183 mlx_make_type3(mc, MLX_CMD_LOGOP, MLX_LOGOP_GET, 1,
1184 mc->mc_sc->mlx_lastevent, 0, 0, mc->mc_dataphys, 0);
1185 mc->mc_complete = mlx_periodic_eventlog_respond;
1186 mc->mc_private = mc;
1188 /* start the command */
1189 if (mlx_start(mc) != 0) {
1191 free(mc->mc_data, M_DEVBUF);
1197 /********************************************************************************
1198 * Instigate a poll for one event log message on (sc).
1199 * We only poll for one message at a time, to keep our command usage down.
1202 mlx_periodic_eventlog_poll(struct mlx_softc *sc)
1204 struct mlx_command *mc;
1205 void *result = NULL;
1210 /* get ourselves a command buffer */
1212 if ((mc = mlx_alloccmd(sc)) == NULL)
1215 /* allocate the response structure */
1216 if ((result = malloc(/*sizeof(struct mlx_eventlog_entry)*/1024, M_DEVBUF,
1220 /* get a command slot */
1221 if (mlx_getslot(mc))
1224 /* map the command so the controller can see it */
1225 mc->mc_data = result;
1226 mc->mc_length = /*sizeof(struct mlx_eventlog_entry)*/1024;
1227 error = bus_dmamap_load(sc->mlx_buffer_dmat, mc->mc_dmamap, mc->mc_data,
1228 mc->mc_length, mlx_eventlog_cb, mc, BUS_DMA_NOWAIT);
1234 if ((result != NULL) && (mc->mc_data != NULL))
1235 free(result, M_DEVBUF);
1239 /********************************************************************************
1240 * Handle the result of polling for a log message, generate diagnostic output.
1241 * If this wasn't the last message waiting for us, we'll go collect another.
1243 static char *mlx_sense_messages[] = {
1244 "because write recovery failed",
1245 "because of SCSI bus reset failure",
1246 "because of double check condition",
1247 "because it was removed",
1248 "because of gross error on SCSI chip",
1249 "because of bad tag returned from drive",
1250 "because of timeout on SCSI command",
1251 "because of reset SCSI command issued from system",
1252 "because busy or parity error count exceeded limit",
1253 "because of 'kill drive' command from system",
1254 "because of selection timeout",
1255 "due to SCSI phase sequence error",
1256 "due to unknown status"
1260 mlx_periodic_eventlog_respond(struct mlx_command *mc)
1262 struct mlx_softc *sc = mc->mc_sc;
1263 struct mlx_eventlog_entry *el = (struct mlx_eventlog_entry *)mc->mc_data;
1268 sc->mlx_lastevent++; /* next message... */
1269 if (mc->mc_status == 0) {
1271 /* handle event log message */
1272 switch(el->el_type) {
1274 * This is the only sort of message we understand at the moment.
1275 * The tests here are probably incomplete.
1277 case MLX_LOGMSG_SENSE: /* sense data */
1278 /* Mylex vendor-specific message indicating a drive was killed? */
1279 if ((el->el_sensekey == 9) &&
1280 (el->el_asc == 0x80)) {
1281 if (el->el_asq < (sizeof(mlx_sense_messages) / sizeof(mlx_sense_messages[0]))) {
1282 reason = mlx_sense_messages[el->el_asq];
1284 reason = "for unknown reason";
1286 device_printf(sc->mlx_dev, "physical drive %d:%d killed %s\n",
1287 el->el_channel, el->el_target, reason);
1289 /* SCSI drive was reset? */
1290 if ((el->el_sensekey == 6) && (el->el_asc == 0x29)) {
1291 device_printf(sc->mlx_dev, "physical drive %d:%d reset\n",
1292 el->el_channel, el->el_target);
1294 /* SCSI drive error? */
1295 if (!((el->el_sensekey == 0) ||
1296 ((el->el_sensekey == 2) &&
1297 (el->el_asc == 0x04) &&
1298 ((el->el_asq == 0x01) ||
1299 (el->el_asq == 0x02))))) {
1300 device_printf(sc->mlx_dev, "physical drive %d:%d error log: sense = %d asc = %x asq = %x\n",
1301 el->el_channel, el->el_target, el->el_sensekey, el->el_asc, el->el_asq);
1302 device_printf(sc->mlx_dev, " info %4D csi %4D\n", el->el_information, ":", el->el_csi, ":");
1307 device_printf(sc->mlx_dev, "unknown log message type 0x%x\n", el->el_type);
1311 device_printf(sc->mlx_dev, "error reading message log - %s\n", mlx_diagnose_command(mc));
1312 /* give up on all the outstanding messages, as we may have come unsynched */
1313 sc->mlx_lastevent = sc->mlx_currevent;
1316 /* dispose of command and data */
1317 free(mc->mc_data, M_DEVBUF);
1320 /* is there another message to obtain? */
1321 if (sc->mlx_lastevent != sc->mlx_currevent) {
1322 mlx_periodic_eventlog_poll(sc);
1324 /* clear log-busy status */
1325 atomic_clear_int(&sc->mlx_flags, MLX_EVENTLOG_BUSY);
1329 /********************************************************************************
1330 * Handle check/rebuild operations in progress.
1333 mlx_periodic_rebuild(struct mlx_command *mc)
1335 struct mlx_softc *sc = mc->mc_sc;
1336 struct mlx_rebuild_status *mr = (struct mlx_rebuild_status *)mc->mc_data;
1338 switch(mc->mc_status) {
1339 case 0: /* operation running, update stats */
1340 sc->mlx_rebuildstat = *mr;
1342 /* spontaneous rebuild/check? */
1343 if (sc->mlx_background == 0) {
1344 sc->mlx_background = MLX_BACKGROUND_SPONTANEOUS;
1345 device_printf(sc->mlx_dev, "background check/rebuild operation started\n");
1349 case 0x0105: /* nothing running, finalise stats and report */
1350 switch(sc->mlx_background) {
1351 case MLX_BACKGROUND_CHECK:
1352 device_printf(sc->mlx_dev, "consistency check completed\n"); /* XXX print drive? */
1354 case MLX_BACKGROUND_REBUILD:
1355 device_printf(sc->mlx_dev, "drive rebuild completed\n"); /* XXX print channel/target? */
1357 case MLX_BACKGROUND_SPONTANEOUS:
1359 /* if we have previously been non-idle, report the transition */
1360 if (sc->mlx_rebuildstat.rs_code != MLX_REBUILDSTAT_IDLE) {
1361 device_printf(sc->mlx_dev, "background check/rebuild operation completed\n");
1364 sc->mlx_background = 0;
1365 sc->mlx_rebuildstat.rs_code = MLX_REBUILDSTAT_IDLE;
1368 free(mc->mc_data, M_DEVBUF);
1372 /********************************************************************************
1373 ********************************************************************************
1375 ********************************************************************************
1376 ********************************************************************************/
1378 /********************************************************************************
1379 * It's time to perform a channel pause action for (sc), either start or stop
1383 mlx_pause_action(struct mlx_softc *sc)
1385 struct mlx_command *mc;
1386 int failsafe, i, command;
1388 /* What are we doing here? */
1389 if (sc->mlx_pause.mp_when == 0) {
1390 command = MLX_CMD_STARTCHANNEL;
1394 command = MLX_CMD_STOPCHANNEL;
1397 * Channels will always start again after the failsafe period,
1398 * which is specified in multiples of 30 seconds.
1399 * This constrains us to a maximum pause of 450 seconds.
1401 failsafe = ((sc->mlx_pause.mp_howlong - time_second) + 5) / 30;
1402 if (failsafe > 0xf) {
1404 sc->mlx_pause.mp_howlong = time_second + (0xf * 30) - 5;
1408 /* build commands for every channel requested */
1409 for (i = 0; i < sc->mlx_enq2->me_actual_channels; i++) {
1410 if ((1 << i) & sc->mlx_pause.mp_which) {
1412 /* get ourselves a command buffer */
1413 if ((mc = mlx_alloccmd(sc)) == NULL)
1415 /* get a command slot */
1416 mc->mc_flags |= MLX_CMD_PRIORITY;
1417 if (mlx_getslot(mc))
1420 /* build the command */
1421 mlx_make_type2(mc, command, (failsafe << 4) | i, 0, 0, 0, 0, 0, 0, 0);
1422 mc->mc_complete = mlx_pause_done;
1423 mc->mc_private = sc; /* XXX not needed */
1426 /* command submitted OK */
1430 device_printf(sc->mlx_dev, "%s failed for channel %d\n",
1431 command == MLX_CMD_STOPCHANNEL ? "pause" : "resume", i);
1439 mlx_pause_done(struct mlx_command *mc)
1441 struct mlx_softc *sc = mc->mc_sc;
1442 int command = mc->mc_mailbox[0];
1443 int channel = mc->mc_mailbox[2] & 0xf;
1445 if (mc->mc_status != 0) {
1446 device_printf(sc->mlx_dev, "%s command failed - %s\n",
1447 command == MLX_CMD_STOPCHANNEL ? "pause" : "resume", mlx_diagnose_command(mc));
1448 } else if (command == MLX_CMD_STOPCHANNEL) {
1449 device_printf(sc->mlx_dev, "channel %d pausing for %ld seconds\n",
1450 channel, (long)(sc->mlx_pause.mp_howlong - time_second));
1452 device_printf(sc->mlx_dev, "channel %d resuming\n", channel);
1457 /********************************************************************************
1458 ********************************************************************************
1460 ********************************************************************************
1461 ********************************************************************************/
1464 mlx_enquire_cb(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
1466 struct mlx_softc *sc;
1467 struct mlx_command *mc;
1469 mc = (struct mlx_command *)arg;
1473 mlx_setup_dmamap(mc, segs, nsegments, error);
1475 /* build an enquiry command */
1477 mlx_make_type2(mc, mc->mc_command, 0, 0, 0, 0, 0, 0, mc->mc_dataphys, 0);
1479 /* do we want a completion callback? */
1480 if (mc->mc_complete != NULL) {
1481 if ((error = mlx_start(mc)) != 0)
1484 /* run the command in either polled or wait mode */
1485 if ((sc->mlx_state & MLX_STATE_INTEN) ? mlx_wait_command(mc) :
1486 mlx_poll_command(mc))
1489 /* command completed OK? */
1490 if (mc->mc_status != 0) {
1491 device_printf(sc->mlx_dev, "ENQUIRY failed - %s\n",
1492 mlx_diagnose_command(mc));
1498 /********************************************************************************
1499 * Perform an Enquiry command using a type-3 command buffer and a return a single
1500 * linear result buffer. If the completion function is specified, it will
1501 * be called with the completed command (and the result response will not be
1502 * valid until that point). Otherwise, the command will either be busy-waited
1503 * for (interrupts not enabled), or slept for.
1506 mlx_enquire(struct mlx_softc *sc, int command, size_t bufsize, void (* complete)(struct mlx_command *mc))
1508 struct mlx_command *mc;
1514 /* get ourselves a command buffer */
1517 if ((mc = mlx_alloccmd(sc)) == NULL)
1519 /* allocate the response structure */
1520 if ((result = malloc(bufsize, M_DEVBUF, M_NOWAIT)) == NULL)
1522 /* get a command slot */
1523 mc->mc_flags |= MLX_CMD_PRIORITY | MLX_CMD_DATAOUT;
1524 if (mlx_getslot(mc))
1527 /* map the command so the controller can see it */
1528 mc->mc_data = result;
1529 mc->mc_length = bufsize;
1530 mc->mc_command = command;
1532 if (complete != NULL) {
1533 mc->mc_complete = complete;
1534 mc->mc_private = mc;
1537 error = bus_dmamap_load(sc->mlx_buffer_dmat, mc->mc_dmamap, mc->mc_data,
1538 mc->mc_length, mlx_enquire_cb, mc, BUS_DMA_NOWAIT);
1541 /* we got a command, but nobody else will free it */
1542 if ((mc != NULL) && (mc->mc_complete == NULL))
1544 /* we got an error, and we allocated a result */
1545 if ((error != 0) && (result != NULL)) {
1546 free(result, M_DEVBUF);
1553 /********************************************************************************
1554 * Perform a Flush command on the nominated controller.
1556 * May be called with interrupts enabled or disabled; will not return until
1557 * the flush operation completes or fails.
1560 mlx_flush(struct mlx_softc *sc)
1562 struct mlx_command *mc;
1567 /* get ourselves a command buffer */
1569 if ((mc = mlx_alloccmd(sc)) == NULL)
1571 /* get a command slot */
1572 if (mlx_getslot(mc))
1575 /* build a flush command */
1576 mlx_make_type2(mc, MLX_CMD_FLUSH, 0, 0, 0, 0, 0, 0, 0, 0);
1578 /* can't assume that interrupts are going to work here, so play it safe */
1579 if (mlx_poll_command(mc))
1582 /* command completed OK? */
1583 if (mc->mc_status != 0) {
1584 device_printf(sc->mlx_dev, "FLUSH failed - %s\n", mlx_diagnose_command(mc));
1588 error = 0; /* success */
1595 /********************************************************************************
1596 * Start a background consistency check on (drive).
1598 * May be called with interrupts enabled or disabled; will return as soon as the
1599 * operation has started or been refused.
1602 mlx_check(struct mlx_softc *sc, int drive)
1604 struct mlx_command *mc;
1609 /* get ourselves a command buffer */
1611 if ((mc = mlx_alloccmd(sc)) == NULL)
1613 /* get a command slot */
1614 if (mlx_getslot(mc))
1617 /* build a checkasync command, set the "fix it" flag */
1618 mlx_make_type2(mc, MLX_CMD_CHECKASYNC, 0, 0, 0, 0, 0, drive | 0x80, 0, 0);
1620 /* start the command and wait for it to be returned */
1621 if (mlx_wait_command(mc))
1624 /* command completed OK? */
1625 if (mc->mc_status != 0) {
1626 device_printf(sc->mlx_dev, "CHECK ASYNC failed - %s\n", mlx_diagnose_command(mc));
1628 device_printf(sc->mlx_sysdrive[drive].ms_disk, "consistency check started");
1630 error = mc->mc_status;
1638 /********************************************************************************
1639 * Start a background rebuild of the physical drive at (channel),(target).
1641 * May be called with interrupts enabled or disabled; will return as soon as the
1642 * operation has started or been refused.
1645 mlx_rebuild(struct mlx_softc *sc, int channel, int target)
1647 struct mlx_command *mc;
1652 /* get ourselves a command buffer */
1654 if ((mc = mlx_alloccmd(sc)) == NULL)
1656 /* get a command slot */
1657 if (mlx_getslot(mc))
1660 /* build a checkasync command, set the "fix it" flag */
1661 mlx_make_type2(mc, MLX_CMD_REBUILDASYNC, channel, target, 0, 0, 0, 0, 0, 0);
1663 /* start the command and wait for it to be returned */
1664 if (mlx_wait_command(mc))
1667 /* command completed OK? */
1668 if (mc->mc_status != 0) {
1669 device_printf(sc->mlx_dev, "REBUILD ASYNC failed - %s\n", mlx_diagnose_command(mc));
1671 device_printf(sc->mlx_dev, "drive rebuild started for %d:%d\n", channel, target);
1673 error = mc->mc_status;
1681 /********************************************************************************
1682 * Run the command (mc) and return when it completes.
1684 * Interrupts need to be enabled; returns nonzero on error.
1687 mlx_wait_command(struct mlx_command *mc)
1689 struct mlx_softc *sc = mc->mc_sc;
1694 mc->mc_complete = NULL;
1695 mc->mc_private = mc; /* wake us when you're done */
1696 if ((error = mlx_start(mc)) != 0)
1700 /* XXX better timeout? */
1701 while ((mc->mc_status == MLX_STATUS_BUSY) && (count < 30)) {
1702 tsleep(mc->mc_private, PRIBIO | PCATCH, "mlxwcmd", hz);
1705 if (mc->mc_status != 0) {
1706 device_printf(sc->mlx_dev, "command failed - %s\n", mlx_diagnose_command(mc));
1713 /********************************************************************************
1714 * Start the command (mc) and busy-wait for it to complete.
1716 * Should only be used when interrupts can't be relied upon. Returns 0 on
1717 * success, nonzero on error.
1718 * Successfully completed commands are dequeued.
1721 mlx_poll_command(struct mlx_command *mc)
1723 struct mlx_softc *sc = mc->mc_sc;
1724 int error, count, s;
1728 mc->mc_complete = NULL;
1729 mc->mc_private = NULL; /* we will poll for it */
1730 if ((error = mlx_start(mc)) != 0)
1735 /* poll for completion */
1736 mlx_done(mc->mc_sc);
1738 } while ((mc->mc_status == MLX_STATUS_BUSY) && (count++ < 15000000));
1739 if (mc->mc_status != MLX_STATUS_BUSY) {
1741 TAILQ_REMOVE(&sc->mlx_work, mc, mc_link);
1745 device_printf(sc->mlx_dev, "command failed - %s\n", mlx_diagnose_command(mc));
1750 mlx_startio_cb(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
1752 struct mlx_command *mc;
1753 struct mlxd_softc *mlxd;
1754 struct mlx_softc *sc;
1760 mc = (struct mlx_command *)arg;
1761 mlx_setup_dmamap(mc, segs, nsegments, error);
1764 bp = mc->mc_private;
1766 if (MLX_BIO_IS_READ(bp)) {
1767 mc->mc_flags |= MLX_CMD_DATAIN;
1768 cmd = MLX_CMD_READSG;
1770 mc->mc_flags |= MLX_CMD_DATAOUT;
1771 cmd = MLX_CMD_WRITESG;
1774 /* build a suitable I/O command (assumes 512-byte rounded transfers) */
1775 mlxd = (struct mlxd_softc *)MLX_BIO_SOFTC(bp);
1776 driveno = mlxd->mlxd_drive - sc->mlx_sysdrive;
1777 blkcount = (MLX_BIO_LENGTH(bp) + MLX_BLKSIZE - 1) / MLX_BLKSIZE;
1779 if ((MLX_BIO_LBA(bp) + blkcount) > sc->mlx_sysdrive[driveno].ms_size)
1780 device_printf(sc->mlx_dev,
1781 "I/O beyond end of unit (%lld,%d > %lu)\n",
1782 (long long)MLX_BIO_LBA(bp), blkcount,
1783 (u_long)sc->mlx_sysdrive[driveno].ms_size);
1786 * Build the I/O command. Note that the SG list type bits are set to zero,
1787 * denoting the format of SG list that we are using.
1789 if (sc->mlx_iftype == MLX_IFTYPE_2) {
1790 mlx_make_type1(mc, (cmd == MLX_CMD_WRITESG) ? MLX_CMD_WRITESG_OLD :
1792 blkcount & 0xff, /* xfer length low byte */
1793 MLX_BIO_LBA(bp), /* physical block number */
1794 driveno, /* target drive number */
1795 mc->mc_sgphys, /* location of SG list */
1796 mc->mc_nsgent & 0x3f); /* size of SG list */
1798 mlx_make_type5(mc, cmd,
1799 blkcount & 0xff, /* xfer length low byte */
1800 (driveno << 3) | ((blkcount >> 8) & 0x07),
1801 /* target+length high 3 bits */
1802 MLX_BIO_LBA(bp), /* physical block number */
1803 mc->mc_sgphys, /* location of SG list */
1804 mc->mc_nsgent & 0x3f); /* size of SG list */
1807 /* try to give command to controller */
1808 if (mlx_start(mc) != 0) {
1809 /* fail the command */
1810 mc->mc_status = MLX_STATUS_WEDGED;
1815 /********************************************************************************
1816 * Pull as much work off the softc's work queue as possible and give it to the
1817 * controller. Leave a couple of slots free for emergencies.
1819 * Must be called at splbio or in an equivalent fashion that prevents
1820 * reentry or activity on the bioq.
1823 mlx_startio(struct mlx_softc *sc)
1825 struct mlx_command *mc;
1830 /* avoid reentrancy */
1831 if (mlx_lock_tas(sc, MLX_LOCK_STARTING))
1834 /* spin until something prevents us from doing any work */
1838 /* see if there's work to be done */
1839 if ((bp = MLX_BIO_QFIRST(sc->mlx_bioq)) == NULL)
1842 if ((mc = mlx_alloccmd(sc)) == NULL)
1844 /* get a slot for the command */
1845 if (mlx_getslot(mc) != 0) {
1849 /* get the buf containing our work */
1850 MLX_BIO_QREMOVE(sc->mlx_bioq, bp);
1854 /* connect the buf to the command */
1855 mc->mc_complete = mlx_completeio;
1856 mc->mc_private = bp;
1857 mc->mc_data = MLX_BIO_DATA(bp);
1858 mc->mc_length = MLX_BIO_LENGTH(bp);
1860 /* map the command so the controller can work with it */
1861 error = bus_dmamap_load(sc->mlx_buffer_dmat, mc->mc_dmamap, mc->mc_data,
1862 mc->mc_length, mlx_startio_cb, mc, 0);
1863 if (error == EINPROGRESS) {
1870 mlx_lock_clr(sc, MLX_LOCK_STARTING);
1873 /********************************************************************************
1874 * Handle completion of an I/O command.
1877 mlx_completeio(struct mlx_command *mc)
1879 struct mlx_softc *sc = mc->mc_sc;
1880 mlx_bio *bp = (mlx_bio *)mc->mc_private;
1881 struct mlxd_softc *mlxd = (struct mlxd_softc *)MLX_BIO_SOFTC(bp);
1883 if (mc->mc_status != MLX_STATUS_OK) { /* could be more verbose here? */
1884 MLX_BIO_SET_ERROR(bp, EIO);
1886 switch(mc->mc_status) {
1887 case MLX_STATUS_RDWROFFLINE: /* system drive has gone offline */
1888 device_printf(mlxd->mlxd_dev, "drive offline\n");
1889 /* should signal this with a return code */
1890 mlxd->mlxd_drive->ms_state = MLX_SYSD_OFFLINE;
1893 default: /* other I/O error */
1894 device_printf(sc->mlx_dev, "I/O error - %s\n", mlx_diagnose_command(mc));
1896 device_printf(sc->mlx_dev, " b_bcount %ld blkcount %ld b_pblkno %d\n",
1897 MLX_BIO_LENGTH(bp), MLX_BIO_LENGTH(bp) / MLX_BLKSIZE, MLX_BIO_LBA(bp));
1898 device_printf(sc->mlx_dev, " %13D\n", mc->mc_mailbox, " ");
1908 mlx_user_cb(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
1910 struct mlx_usercommand *mu;
1911 struct mlx_command *mc;
1912 struct mlx_dcdb *dcdb;
1914 mc = (struct mlx_command *)arg;
1918 mlx_setup_dmamap(mc, segs, nsegments, error);
1920 mu = (struct mlx_usercommand *)mc->mc_private;
1924 * If this is a passthrough SCSI command, the DCDB is packed at the
1925 * beginning of the data area. Fix up the DCDB to point to the correct
1926 * physical address and override any bufptr supplied by the caller since
1927 * we know what it's meant to be.
1929 if (mc->mc_mailbox[0] == MLX_CMD_DIRECT_CDB) {
1930 dcdb = (struct mlx_dcdb *)mc->mc_data;
1931 dcdb->dcdb_physaddr = mc->mc_dataphys + sizeof(*dcdb);
1936 * If there's a data buffer, fix up the command's buffer pointer.
1938 if (mu->mu_datasize > 0) {
1939 mc->mc_mailbox[mu->mu_bufptr ] = mc->mc_dataphys & 0xff;
1940 mc->mc_mailbox[mu->mu_bufptr + 1] = (mc->mc_dataphys >> 8) & 0xff;
1941 mc->mc_mailbox[mu->mu_bufptr + 2] = (mc->mc_dataphys >> 16) & 0xff;
1942 mc->mc_mailbox[mu->mu_bufptr + 3] = (mc->mc_dataphys >> 24) & 0xff;
1944 debug(0, "command fixup");
1946 /* submit the command and wait */
1947 if (mlx_wait_command(mc) != 0)
1952 /********************************************************************************
1953 * Take a command from user-space and try to run it.
1955 * XXX Note that this can't perform very much in the way of error checking, and
1956 * as such, applications _must_ be considered trustworthy.
1957 * XXX Commands using S/G for data are not supported.
1960 mlx_user_command(struct mlx_softc *sc, struct mlx_usercommand *mu)
1962 struct mlx_command *mc;
1972 /* get ourselves a command and copy in from user space */
1973 if ((mc = mlx_alloccmd(sc)) == NULL)
1975 bcopy(mu->mu_command, mc->mc_mailbox, sizeof(mc->mc_mailbox));
1976 debug(0, "got command buffer");
1979 * if we need a buffer for data transfer, allocate one and copy in its
1982 if (mu->mu_datasize > 0) {
1983 if (mu->mu_datasize > MLX_MAXPHYS) {
1987 if (((kbuf = malloc(mu->mu_datasize, M_DEVBUF, M_WAITOK)) == NULL) ||
1988 (error = copyin(mu->mu_buf, kbuf, mu->mu_datasize)))
1990 debug(0, "got kernel buffer");
1993 /* get a command slot */
1994 if (mlx_getslot(mc))
1996 debug(0, "got a slot");
1998 if (mu->mu_datasize > 0) {
2000 /* range check the pointer to physical buffer address */
2001 if ((mu->mu_bufptr < 0) || (mu->mu_bufptr > (sizeof(mu->mu_command) -
2002 sizeof(u_int32_t)))) {
2008 /* map the command so the controller can see it */
2010 mc->mc_length = mu->mu_datasize;
2011 mc->mc_private = mu;
2012 error = bus_dmamap_load(sc->mlx_buffer_dmat, mc->mc_dmamap, mc->mc_data,
2013 mc->mc_length, mlx_user_cb, mc, BUS_DMA_NOWAIT);
2015 /* copy out status and data */
2016 mu->mu_status = mc->mc_status;
2017 if ((mu->mu_datasize > 0) &&
2018 ((error = copyout(kbuf, mu->mu_buf, mu->mu_datasize))))
2026 free(kbuf, M_DEVBUF);
2030 /********************************************************************************
2031 ********************************************************************************
2032 Command I/O to Controller
2033 ********************************************************************************
2034 ********************************************************************************/
2036 /********************************************************************************
2037 * Find a free command slot for (mc).
2039 * Don't hand out a slot to a normal-priority command unless there are at least
2040 * 4 slots free for priority commands.
2043 mlx_getslot(struct mlx_command *mc)
2045 struct mlx_softc *sc = mc->mc_sc;
2051 * Enforce slot-usage limit, if we have the required information.
2053 if (sc->mlx_enq2 != NULL) {
2054 limit = sc->mlx_enq2->me_max_commands;
2058 if (sc->mlx_busycmds >= ((mc->mc_flags & MLX_CMD_PRIORITY) ? limit : limit - 4))
2062 * Allocate an outstanding command slot
2064 * XXX linear search is slow
2067 for (slot = 0; slot < limit; slot++) {
2068 debug(2, "try slot %d", slot);
2069 if (sc->mlx_busycmd[slot] == NULL)
2073 sc->mlx_busycmd[slot] = mc;
2082 debug(2, "got slot %d", slot);
2087 /********************************************************************************
2088 * Map/unmap (mc)'s data in the controller's addressable space.
2091 mlx_setup_dmamap(struct mlx_command *mc, bus_dma_segment_t *segs, int nsegments,
2094 struct mlx_softc *sc = mc->mc_sc;
2095 struct mlx_sgentry *sg;
2100 /* XXX should be unnecessary */
2101 if (sc->mlx_enq2 && (nsegments > sc->mlx_enq2->me_max_sg))
2102 panic("MLX: too many s/g segments (%d, max %d)", nsegments,
2103 sc->mlx_enq2->me_max_sg);
2105 /* get base address of s/g table */
2106 sg = sc->mlx_sgtable + (mc->mc_slot * MLX_NSEG);
2108 /* save s/g table information in command */
2109 mc->mc_nsgent = nsegments;
2110 mc->mc_sgphys = sc->mlx_sgbusaddr +
2111 (mc->mc_slot * MLX_NSEG * sizeof(struct mlx_sgentry));
2112 mc->mc_dataphys = segs[0].ds_addr;
2114 /* populate s/g table */
2115 for (i = 0; i < nsegments; i++, sg++) {
2116 sg->sg_addr = segs[i].ds_addr;
2117 sg->sg_count = segs[i].ds_len;
2120 /* Make sure the buffers are visible on the bus. */
2121 if (mc->mc_flags & MLX_CMD_DATAIN)
2122 bus_dmamap_sync(sc->mlx_buffer_dmat, mc->mc_dmamap,
2123 BUS_DMASYNC_PREREAD);
2124 if (mc->mc_flags & MLX_CMD_DATAOUT)
2125 bus_dmamap_sync(sc->mlx_buffer_dmat, mc->mc_dmamap,
2126 BUS_DMASYNC_PREWRITE);
2130 mlx_unmapcmd(struct mlx_command *mc)
2132 struct mlx_softc *sc = mc->mc_sc;
2136 /* if the command involved data at all */
2137 if (mc->mc_data != NULL) {
2139 if (mc->mc_flags & MLX_CMD_DATAIN)
2140 bus_dmamap_sync(sc->mlx_buffer_dmat, mc->mc_dmamap, BUS_DMASYNC_POSTREAD);
2141 if (mc->mc_flags & MLX_CMD_DATAOUT)
2142 bus_dmamap_sync(sc->mlx_buffer_dmat, mc->mc_dmamap, BUS_DMASYNC_POSTWRITE);
2144 bus_dmamap_unload(sc->mlx_buffer_dmat, mc->mc_dmamap);
2148 /********************************************************************************
2149 * Try to deliver (mc) to the controller.
2151 * Can be called at any interrupt level, with or without interrupts enabled.
2154 mlx_start(struct mlx_command *mc)
2156 struct mlx_softc *sc = mc->mc_sc;
2161 /* save the slot number as ident so we can handle this command when complete */
2162 mc->mc_mailbox[0x1] = mc->mc_slot;
2164 /* mark the command as currently being processed */
2165 mc->mc_status = MLX_STATUS_BUSY;
2167 /* set a default 60-second timeout XXX tunable? XXX not currently used */
2168 mc->mc_timeout = time_second + 60;
2170 /* spin waiting for the mailbox */
2171 for (i = 100000, done = 0; (i > 0) && !done; i--) {
2173 if (sc->mlx_tryqueue(sc, mc)) {
2175 /* move command to work queue */
2176 TAILQ_INSERT_TAIL(&sc->mlx_work, mc, mc_link);
2178 splx(s); /* drop spl to allow completion interrupts */
2181 /* command is enqueued */
2186 * We couldn't get the controller to take the command. Revoke the slot
2187 * that the command was given and return it with a bad status.
2189 sc->mlx_busycmd[mc->mc_slot] = NULL;
2190 device_printf(sc->mlx_dev, "controller wedged (not taking commands)\n");
2191 mc->mc_status = MLX_STATUS_WEDGED;
2196 /********************************************************************************
2197 * Poll the controller (sc) for completed commands.
2198 * Update command status and free slots for reuse. If any slots were freed,
2199 * new commands may be posted.
2201 * Returns nonzero if one or more commands were completed.
2204 mlx_done(struct mlx_softc *sc)
2206 struct mlx_command *mc;
2215 /* loop collecting completed commands */
2218 /* poll for a completed command's identifier and status */
2219 if (sc->mlx_findcomplete(sc, &slot, &status)) {
2221 mc = sc->mlx_busycmd[slot]; /* find command */
2222 if (mc != NULL) { /* paranoia */
2223 if (mc->mc_status == MLX_STATUS_BUSY) {
2224 mc->mc_status = status; /* save status */
2226 /* free slot for reuse */
2227 sc->mlx_busycmd[slot] = NULL;
2230 device_printf(sc->mlx_dev, "duplicate done event for slot %d\n", slot);
2233 device_printf(sc->mlx_dev, "done event for nonbusy slot %d\n", slot);
2241 /* if we've completed any commands, try posting some more */
2245 /* handle completion and timeouts */
2251 /********************************************************************************
2252 * Perform post-completion processing for commands on (sc).
2255 mlx_complete(struct mlx_softc *sc)
2257 struct mlx_command *mc, *nc;
2262 /* avoid reentrancy XXX might want to signal and request a restart */
2263 if (mlx_lock_tas(sc, MLX_LOCK_COMPLETING))
2269 /* scan the list of busy/done commands */
2270 mc = TAILQ_FIRST(&sc->mlx_work);
2271 while (mc != NULL) {
2272 nc = TAILQ_NEXT(mc, mc_link);
2274 /* Command has been completed in some fashion */
2275 if (mc->mc_status != MLX_STATUS_BUSY) {
2277 /* unmap the command's data buffer */
2280 * Does the command have a completion handler?
2282 if (mc->mc_complete != NULL) {
2283 /* remove from list and give to handler */
2284 TAILQ_REMOVE(&sc->mlx_work, mc, mc_link);
2285 mc->mc_complete(mc);
2288 * Is there a sleeper waiting on this command?
2290 } else if (mc->mc_private != NULL) { /* sleeping caller wants to know about it */
2292 /* remove from list and wake up sleeper */
2293 TAILQ_REMOVE(&sc->mlx_work, mc, mc_link);
2294 wakeup_one(mc->mc_private);
2297 * Leave the command for a caller that's polling for it.
2306 mlx_lock_clr(sc, MLX_LOCK_COMPLETING);
2309 /********************************************************************************
2310 ********************************************************************************
2311 Command Buffer Management
2312 ********************************************************************************
2313 ********************************************************************************/
2315 /********************************************************************************
2316 * Get a new command buffer.
2318 * This may return NULL in low-memory cases.
2320 * Note that using malloc() is expensive (the command buffer is << 1 page) but
2321 * necessary if we are to be a loadable module before the zone allocator is fixed.
2323 * If possible, we recycle a command buffer that's been used before.
2325 * XXX Note that command buffers are not cleaned out - it is the caller's
2326 * responsibility to ensure that all required fields are filled in before
2329 static struct mlx_command *
2330 mlx_alloccmd(struct mlx_softc *sc)
2332 struct mlx_command *mc;
2339 if ((mc = TAILQ_FIRST(&sc->mlx_freecmds)) != NULL)
2340 TAILQ_REMOVE(&sc->mlx_freecmds, mc, mc_link);
2343 /* allocate a new command buffer? */
2345 mc = (struct mlx_command *)malloc(sizeof(*mc), M_DEVBUF, M_NOWAIT | M_ZERO);
2348 error = bus_dmamap_create(sc->mlx_buffer_dmat, 0, &mc->mc_dmamap);
2358 /********************************************************************************
2359 * Release a command buffer for recycling.
2361 * XXX It might be a good idea to limit the number of commands we save for reuse
2362 * if it's shown that this list bloats out massively.
2365 mlx_releasecmd(struct mlx_command *mc)
2372 TAILQ_INSERT_HEAD(&mc->mc_sc->mlx_freecmds, mc, mc_link);
2376 /********************************************************************************
2377 * Permanently discard a command buffer.
2380 mlx_freecmd(struct mlx_command *mc)
2382 struct mlx_softc *sc = mc->mc_sc;
2385 bus_dmamap_destroy(sc->mlx_buffer_dmat, mc->mc_dmamap);
2390 /********************************************************************************
2391 ********************************************************************************
2392 Type 3 interface accessor methods
2393 ********************************************************************************
2394 ********************************************************************************/
2396 /********************************************************************************
2397 * Try to give (mc) to the controller. Returns 1 if successful, 0 on failure
2398 * (the controller is not ready to take a command).
2400 * Must be called at splbio or in a fashion that prevents reentry.
2403 mlx_v3_tryqueue(struct mlx_softc *sc, struct mlx_command *mc)
2409 /* ready for our command? */
2410 if (!(MLX_V3_GET_IDBR(sc) & MLX_V3_IDB_FULL)) {
2411 /* copy mailbox data to window */
2412 for (i = 0; i < 13; i++)
2413 MLX_V3_PUT_MAILBOX(sc, i, mc->mc_mailbox[i]);
2416 MLX_V3_PUT_IDBR(sc, MLX_V3_IDB_FULL);
2422 /********************************************************************************
2423 * See if a command has been completed, if so acknowledge its completion
2424 * and recover the slot number and status code.
2426 * Must be called at splbio or in a fashion that prevents reentry.
2429 mlx_v3_findcomplete(struct mlx_softc *sc, u_int8_t *slot, u_int16_t *status)
2434 /* status available? */
2435 if (MLX_V3_GET_ODBR(sc) & MLX_V3_ODB_SAVAIL) {
2436 *slot = MLX_V3_GET_STATUS_IDENT(sc); /* get command identifier */
2437 *status = MLX_V3_GET_STATUS(sc); /* get status */
2439 /* acknowledge completion */
2440 MLX_V3_PUT_ODBR(sc, MLX_V3_ODB_SAVAIL);
2441 MLX_V3_PUT_IDBR(sc, MLX_V3_IDB_SACK);
2447 /********************************************************************************
2448 * Enable/disable interrupts as requested. (No acknowledge required)
2450 * Must be called at splbio or in a fashion that prevents reentry.
2453 mlx_v3_intaction(struct mlx_softc *sc, int action)
2458 case MLX_INTACTION_DISABLE:
2459 MLX_V3_PUT_IER(sc, 0);
2460 sc->mlx_state &= ~MLX_STATE_INTEN;
2462 case MLX_INTACTION_ENABLE:
2463 MLX_V3_PUT_IER(sc, 1);
2464 sc->mlx_state |= MLX_STATE_INTEN;
2469 /********************************************************************************
2470 * Poll for firmware error codes during controller initialisation.
2471 * Returns 0 if initialisation is complete, 1 if still in progress but no
2472 * error has been fetched, 2 if an error has been retrieved.
2475 mlx_v3_fw_handshake(struct mlx_softc *sc, int *error, int *param1, int *param2)
2478 static int initted = 0;
2482 /* first time around, clear any hardware completion status */
2484 MLX_V3_PUT_IDBR(sc, MLX_V3_IDB_SACK);
2489 /* init in progress? */
2490 if (!(MLX_V3_GET_IDBR(sc) & MLX_V3_IDB_INIT_BUSY))
2493 /* test error value */
2494 fwerror = MLX_V3_GET_FWERROR(sc);
2495 if (!(fwerror & MLX_V3_FWERROR_PEND))
2498 /* mask status pending bit, fetch status */
2499 *error = fwerror & ~MLX_V3_FWERROR_PEND;
2500 *param1 = MLX_V3_GET_FWERROR_PARAM1(sc);
2501 *param2 = MLX_V3_GET_FWERROR_PARAM2(sc);
2504 MLX_V3_PUT_FWERROR(sc, 0);
2509 /********************************************************************************
2510 ********************************************************************************
2511 Type 4 interface accessor methods
2512 ********************************************************************************
2513 ********************************************************************************/
2515 /********************************************************************************
2516 * Try to give (mc) to the controller. Returns 1 if successful, 0 on failure
2517 * (the controller is not ready to take a command).
2519 * Must be called at splbio or in a fashion that prevents reentry.
2522 mlx_v4_tryqueue(struct mlx_softc *sc, struct mlx_command *mc)
2528 /* ready for our command? */
2529 if (!(MLX_V4_GET_IDBR(sc) & MLX_V4_IDB_FULL)) {
2530 /* copy mailbox data to window */
2531 for (i = 0; i < 13; i++)
2532 MLX_V4_PUT_MAILBOX(sc, i, mc->mc_mailbox[i]);
2534 /* memory-mapped controller, so issue a write barrier to ensure the mailbox is filled */
2535 bus_space_barrier(sc->mlx_btag, sc->mlx_bhandle, MLX_V4_MAILBOX, MLX_V4_MAILBOX_LENGTH,
2536 BUS_SPACE_BARRIER_WRITE);
2539 MLX_V4_PUT_IDBR(sc, MLX_V4_IDB_HWMBOX_CMD);
2545 /********************************************************************************
2546 * See if a command has been completed, if so acknowledge its completion
2547 * and recover the slot number and status code.
2549 * Must be called at splbio or in a fashion that prevents reentry.
2552 mlx_v4_findcomplete(struct mlx_softc *sc, u_int8_t *slot, u_int16_t *status)
2557 /* status available? */
2558 if (MLX_V4_GET_ODBR(sc) & MLX_V4_ODB_HWSAVAIL) {
2559 *slot = MLX_V4_GET_STATUS_IDENT(sc); /* get command identifier */
2560 *status = MLX_V4_GET_STATUS(sc); /* get status */
2562 /* acknowledge completion */
2563 MLX_V4_PUT_ODBR(sc, MLX_V4_ODB_HWMBOX_ACK);
2564 MLX_V4_PUT_IDBR(sc, MLX_V4_IDB_SACK);
2570 /********************************************************************************
2571 * Enable/disable interrupts as requested.
2573 * Must be called at splbio or in a fashion that prevents reentry.
2576 mlx_v4_intaction(struct mlx_softc *sc, int action)
2581 case MLX_INTACTION_DISABLE:
2582 MLX_V4_PUT_IER(sc, MLX_V4_IER_MASK | MLX_V4_IER_DISINT);
2583 sc->mlx_state &= ~MLX_STATE_INTEN;
2585 case MLX_INTACTION_ENABLE:
2586 MLX_V4_PUT_IER(sc, MLX_V4_IER_MASK & ~MLX_V4_IER_DISINT);
2587 sc->mlx_state |= MLX_STATE_INTEN;
2592 /********************************************************************************
2593 * Poll for firmware error codes during controller initialisation.
2594 * Returns 0 if initialisation is complete, 1 if still in progress but no
2595 * error has been fetched, 2 if an error has been retrieved.
2598 mlx_v4_fw_handshake(struct mlx_softc *sc, int *error, int *param1, int *param2)
2601 static int initted = 0;
2605 /* first time around, clear any hardware completion status */
2607 MLX_V4_PUT_IDBR(sc, MLX_V4_IDB_SACK);
2612 /* init in progress? */
2613 if (!(MLX_V4_GET_IDBR(sc) & MLX_V4_IDB_INIT_BUSY))
2616 /* test error value */
2617 fwerror = MLX_V4_GET_FWERROR(sc);
2618 if (!(fwerror & MLX_V4_FWERROR_PEND))
2621 /* mask status pending bit, fetch status */
2622 *error = fwerror & ~MLX_V4_FWERROR_PEND;
2623 *param1 = MLX_V4_GET_FWERROR_PARAM1(sc);
2624 *param2 = MLX_V4_GET_FWERROR_PARAM2(sc);
2627 MLX_V4_PUT_FWERROR(sc, 0);
2632 /********************************************************************************
2633 ********************************************************************************
2634 Type 5 interface accessor methods
2635 ********************************************************************************
2636 ********************************************************************************/
2638 /********************************************************************************
2639 * Try to give (mc) to the controller. Returns 1 if successful, 0 on failure
2640 * (the controller is not ready to take a command).
2642 * Must be called at splbio or in a fashion that prevents reentry.
2645 mlx_v5_tryqueue(struct mlx_softc *sc, struct mlx_command *mc)
2651 /* ready for our command? */
2652 if (MLX_V5_GET_IDBR(sc) & MLX_V5_IDB_EMPTY) {
2653 /* copy mailbox data to window */
2654 for (i = 0; i < 13; i++)
2655 MLX_V5_PUT_MAILBOX(sc, i, mc->mc_mailbox[i]);
2658 MLX_V5_PUT_IDBR(sc, MLX_V5_IDB_HWMBOX_CMD);
2664 /********************************************************************************
2665 * See if a command has been completed, if so acknowledge its completion
2666 * and recover the slot number and status code.
2668 * Must be called at splbio or in a fashion that prevents reentry.
2671 mlx_v5_findcomplete(struct mlx_softc *sc, u_int8_t *slot, u_int16_t *status)
2676 /* status available? */
2677 if (MLX_V5_GET_ODBR(sc) & MLX_V5_ODB_HWSAVAIL) {
2678 *slot = MLX_V5_GET_STATUS_IDENT(sc); /* get command identifier */
2679 *status = MLX_V5_GET_STATUS(sc); /* get status */
2681 /* acknowledge completion */
2682 MLX_V5_PUT_ODBR(sc, MLX_V5_ODB_HWMBOX_ACK);
2683 MLX_V5_PUT_IDBR(sc, MLX_V5_IDB_SACK);
2689 /********************************************************************************
2690 * Enable/disable interrupts as requested.
2692 * Must be called at splbio or in a fashion that prevents reentry.
2695 mlx_v5_intaction(struct mlx_softc *sc, int action)
2700 case MLX_INTACTION_DISABLE:
2701 MLX_V5_PUT_IER(sc, 0xff & MLX_V5_IER_DISINT);
2702 sc->mlx_state &= ~MLX_STATE_INTEN;
2704 case MLX_INTACTION_ENABLE:
2705 MLX_V5_PUT_IER(sc, 0xff & ~MLX_V5_IER_DISINT);
2706 sc->mlx_state |= MLX_STATE_INTEN;
2711 /********************************************************************************
2712 * Poll for firmware error codes during controller initialisation.
2713 * Returns 0 if initialisation is complete, 1 if still in progress but no
2714 * error has been fetched, 2 if an error has been retrieved.
2717 mlx_v5_fw_handshake(struct mlx_softc *sc, int *error, int *param1, int *param2)
2720 static int initted = 0;
2724 /* first time around, clear any hardware completion status */
2726 MLX_V5_PUT_IDBR(sc, MLX_V5_IDB_SACK);
2731 /* init in progress? */
2732 if (MLX_V5_GET_IDBR(sc) & MLX_V5_IDB_INIT_DONE)
2735 /* test for error value */
2736 fwerror = MLX_V5_GET_FWERROR(sc);
2737 if (!(fwerror & MLX_V5_FWERROR_PEND))
2740 /* mask status pending bit, fetch status */
2741 *error = fwerror & ~MLX_V5_FWERROR_PEND;
2742 *param1 = MLX_V5_GET_FWERROR_PARAM1(sc);
2743 *param2 = MLX_V5_GET_FWERROR_PARAM2(sc);
2746 MLX_V5_PUT_FWERROR(sc, 0xff);
2751 /********************************************************************************
2752 ********************************************************************************
2754 ********************************************************************************
2755 ********************************************************************************/
2757 /********************************************************************************
2758 * Return a status message describing (mc)
2760 static char *mlx_status_messages[] = {
2761 "normal completion", /* 00 */
2762 "irrecoverable data error", /* 01 */
2763 "drive does not exist, or is offline", /* 02 */
2764 "attempt to write beyond end of drive", /* 03 */
2765 "bad data encountered", /* 04 */
2766 "invalid log entry request", /* 05 */
2767 "attempt to rebuild online drive", /* 06 */
2768 "new disk failed during rebuild", /* 07 */
2769 "invalid channel/target", /* 08 */
2770 "rebuild/check already in progress", /* 09 */
2771 "one or more disks are dead", /* 10 */
2772 "invalid or non-redundant drive", /* 11 */
2773 "channel is busy", /* 12 */
2774 "channel is not stopped", /* 13 */
2775 "rebuild successfully terminated", /* 14 */
2776 "unsupported command", /* 15 */
2777 "check condition received", /* 16 */
2778 "device is busy", /* 17 */
2779 "selection or command timeout", /* 18 */
2780 "command terminated abnormally", /* 19 */
2789 } mlx_messages[] = {
2790 {MLX_CMD_READSG, 0x0001, 1},
2791 {MLX_CMD_READSG, 0x0002, 1},
2792 {MLX_CMD_READSG, 0x0105, 3},
2793 {MLX_CMD_READSG, 0x010c, 4},
2794 {MLX_CMD_WRITESG, 0x0001, 1},
2795 {MLX_CMD_WRITESG, 0x0002, 1},
2796 {MLX_CMD_WRITESG, 0x0105, 3},
2797 {MLX_CMD_READSG_OLD, 0x0001, 1},
2798 {MLX_CMD_READSG_OLD, 0x0002, 1},
2799 {MLX_CMD_READSG_OLD, 0x0105, 3},
2800 {MLX_CMD_WRITESG_OLD, 0x0001, 1},
2801 {MLX_CMD_WRITESG_OLD, 0x0002, 1},
2802 {MLX_CMD_WRITESG_OLD, 0x0105, 3},
2803 {MLX_CMD_LOGOP, 0x0105, 5},
2804 {MLX_CMD_REBUILDASYNC, 0x0002, 6},
2805 {MLX_CMD_REBUILDASYNC, 0x0004, 7},
2806 {MLX_CMD_REBUILDASYNC, 0x0105, 8},
2807 {MLX_CMD_REBUILDASYNC, 0x0106, 9},
2808 {MLX_CMD_REBUILDASYNC, 0x0107, 14},
2809 {MLX_CMD_CHECKASYNC, 0x0002, 10},
2810 {MLX_CMD_CHECKASYNC, 0x0105, 11},
2811 {MLX_CMD_CHECKASYNC, 0x0106, 9},
2812 {MLX_CMD_STOPCHANNEL, 0x0106, 12},
2813 {MLX_CMD_STOPCHANNEL, 0x0105, 8},
2814 {MLX_CMD_STARTCHANNEL, 0x0005, 13},
2815 {MLX_CMD_STARTCHANNEL, 0x0105, 8},
2816 {MLX_CMD_DIRECT_CDB, 0x0002, 16},
2817 {MLX_CMD_DIRECT_CDB, 0x0008, 17},
2818 {MLX_CMD_DIRECT_CDB, 0x000e, 18},
2819 {MLX_CMD_DIRECT_CDB, 0x000f, 19},
2820 {MLX_CMD_DIRECT_CDB, 0x0105, 8},
2827 mlx_diagnose_command(struct mlx_command *mc)
2829 static char unkmsg[80];
2832 /* look up message in table */
2833 for (i = 0; mlx_messages[i].command != -1; i++)
2834 if (((mc->mc_mailbox[0] == mlx_messages[i].command) || (mlx_messages[i].command == 0)) &&
2835 (mc->mc_status == mlx_messages[i].status))
2836 return(mlx_status_messages[mlx_messages[i].msg]);
2838 sprintf(unkmsg, "unknown response 0x%x for command 0x%x", (int)mc->mc_status, (int)mc->mc_mailbox[0]);
2842 /*******************************************************************************
2843 * Print a string describing the controller (sc)
2849 } mlx_controller_names[] = {
2864 mlx_describe_controller(struct mlx_softc *sc)
2866 static char buf[80];
2870 for (i = 0, model = NULL; mlx_controller_names[i].name != NULL; i++) {
2871 if ((sc->mlx_enq2->me_hardware_id & 0xff) == mlx_controller_names[i].hwid) {
2872 model = mlx_controller_names[i].name;
2876 if (model == NULL) {
2877 sprintf(buf, " model 0x%x", sc->mlx_enq2->me_hardware_id & 0xff);
2880 device_printf(sc->mlx_dev, "DAC%s, %d channel%s, firmware %d.%02d-%c-%02d, %dMB RAM\n",
2882 sc->mlx_enq2->me_actual_channels,
2883 sc->mlx_enq2->me_actual_channels > 1 ? "s" : "",
2884 sc->mlx_enq2->me_firmware_id & 0xff,
2885 (sc->mlx_enq2->me_firmware_id >> 8) & 0xff,
2886 (sc->mlx_enq2->me_firmware_id >> 24) & 0xff,
2887 (sc->mlx_enq2->me_firmware_id >> 16) & 0xff,
2888 sc->mlx_enq2->me_mem_size / (1024 * 1024));
2891 device_printf(sc->mlx_dev, " Hardware ID 0x%08x\n", sc->mlx_enq2->me_hardware_id);
2892 device_printf(sc->mlx_dev, " Firmware ID 0x%08x\n", sc->mlx_enq2->me_firmware_id);
2893 device_printf(sc->mlx_dev, " Configured/Actual channels %d/%d\n", sc->mlx_enq2->me_configured_channels,
2894 sc->mlx_enq2->me_actual_channels);
2895 device_printf(sc->mlx_dev, " Max Targets %d\n", sc->mlx_enq2->me_max_targets);
2896 device_printf(sc->mlx_dev, " Max Tags %d\n", sc->mlx_enq2->me_max_tags);
2897 device_printf(sc->mlx_dev, " Max System Drives %d\n", sc->mlx_enq2->me_max_sys_drives);
2898 device_printf(sc->mlx_dev, " Max Arms %d\n", sc->mlx_enq2->me_max_arms);
2899 device_printf(sc->mlx_dev, " Max Spans %d\n", sc->mlx_enq2->me_max_spans);
2900 device_printf(sc->mlx_dev, " DRAM/cache/flash/NVRAM size %d/%d/%d/%d\n", sc->mlx_enq2->me_mem_size,
2901 sc->mlx_enq2->me_cache_size, sc->mlx_enq2->me_flash_size, sc->mlx_enq2->me_nvram_size);
2902 device_printf(sc->mlx_dev, " DRAM type %d\n", sc->mlx_enq2->me_mem_type);
2903 device_printf(sc->mlx_dev, " Clock Speed %dns\n", sc->mlx_enq2->me_clock_speed);
2904 device_printf(sc->mlx_dev, " Hardware Speed %dns\n", sc->mlx_enq2->me_hardware_speed);
2905 device_printf(sc->mlx_dev, " Max Commands %d\n", sc->mlx_enq2->me_max_commands);
2906 device_printf(sc->mlx_dev, " Max SG Entries %d\n", sc->mlx_enq2->me_max_sg);
2907 device_printf(sc->mlx_dev, " Max DP %d\n", sc->mlx_enq2->me_max_dp);
2908 device_printf(sc->mlx_dev, " Max IOD %d\n", sc->mlx_enq2->me_max_iod);
2909 device_printf(sc->mlx_dev, " Max Comb %d\n", sc->mlx_enq2->me_max_comb);
2910 device_printf(sc->mlx_dev, " Latency %ds\n", sc->mlx_enq2->me_latency);
2911 device_printf(sc->mlx_dev, " SCSI Timeout %ds\n", sc->mlx_enq2->me_scsi_timeout);
2912 device_printf(sc->mlx_dev, " Min Free Lines %d\n", sc->mlx_enq2->me_min_freelines);
2913 device_printf(sc->mlx_dev, " Rate Constant %d\n", sc->mlx_enq2->me_rate_const);
2914 device_printf(sc->mlx_dev, " MAXBLK %d\n", sc->mlx_enq2->me_maxblk);
2915 device_printf(sc->mlx_dev, " Blocking Factor %d sectors\n", sc->mlx_enq2->me_blocking_factor);
2916 device_printf(sc->mlx_dev, " Cache Line Size %d blocks\n", sc->mlx_enq2->me_cacheline);
2917 device_printf(sc->mlx_dev, " SCSI Capability %s%dMHz, %d bit\n",
2918 sc->mlx_enq2->me_scsi_cap & (1<<4) ? "differential " : "",
2919 (1 << ((sc->mlx_enq2->me_scsi_cap >> 2) & 3)) * 10,
2920 8 << (sc->mlx_enq2->me_scsi_cap & 0x3));
2921 device_printf(sc->mlx_dev, " Firmware Build Number %d\n", sc->mlx_enq2->me_firmware_build);
2922 device_printf(sc->mlx_dev, " Fault Management Type %d\n", sc->mlx_enq2->me_fault_mgmt_type);
2923 device_printf(sc->mlx_dev, " Features %b\n", sc->mlx_enq2->me_firmware_features,
2924 "\20\4Background Init\3Read Ahead\2MORE\1Cluster\n");
2929 /*******************************************************************************
2930 * Emit a string describing the firmware handshake status code, and return a flag
2931 * indicating whether the code represents a fatal error.
2933 * Error code interpretations are from the Linux driver, and don't directly match
2934 * the messages printed by Mylex's BIOS. This may change if documentation on the
2935 * codes is forthcoming.
2938 mlx_fw_message(struct mlx_softc *sc, int error, int param1, int param2)
2942 device_printf(sc->mlx_dev, "physical drive %d:%d not responding\n", param2, param1);
2945 /* we could be neater about this and give some indication when we receive more of them */
2946 if (!(sc->mlx_flags & MLX_SPINUP_REPORTED)) {
2947 device_printf(sc->mlx_dev, "spinning up drives...\n");
2948 sc->mlx_flags |= MLX_SPINUP_REPORTED;
2952 device_printf(sc->mlx_dev, "configuration checksum error\n");
2955 device_printf(sc->mlx_dev, "mirror race recovery failed\n");
2958 device_printf(sc->mlx_dev, "mirror race recovery in progress\n");
2961 device_printf(sc->mlx_dev, "physical drive %d:%d COD mismatch\n", param2, param1);
2964 device_printf(sc->mlx_dev, "logical drive installation aborted\n");
2967 device_printf(sc->mlx_dev, "mirror race on a critical system drive\n");
2970 device_printf(sc->mlx_dev, "new controller configuration found\n");
2973 device_printf(sc->mlx_dev, "FATAL MEMORY PARITY ERROR\n");
2976 device_printf(sc->mlx_dev, "unknown firmware initialisation error %02x:%02x:%02x\n", error, param1, param2);
2982 /********************************************************************************
2983 ********************************************************************************
2985 ********************************************************************************
2986 ********************************************************************************/
2988 /********************************************************************************
2989 * Find the disk whose unit number is (unit) on this controller
2991 static struct mlx_sysdrive *
2992 mlx_findunit(struct mlx_softc *sc, int unit)
2996 /* search system drives */
2997 for (i = 0; i < MLX_MAXDRIVES; i++) {
2998 /* is this one attached? */
2999 if (sc->mlx_sysdrive[i].ms_disk != 0) {
3000 /* is this the one? */
3001 if (unit == device_get_unit(sc->mlx_sysdrive[i].ms_disk))
3002 return(&sc->mlx_sysdrive[i]);