1 | /* $NetBSD: mlx.c,v 1.65 2016/09/27 03:33:32 pgoyette Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2001 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Andrew Doran. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | /*- |
33 | * Copyright (c) 1999 Michael Smith |
34 | * All rights reserved. |
35 | * |
36 | * Redistribution and use in source and binary forms, with or without |
37 | * modification, are permitted provided that the following conditions |
38 | * are met: |
39 | * 1. Redistributions of source code must retain the above copyright |
40 | * notice, this list of conditions and the following disclaimer. |
41 | * 2. Redistributions in binary form must reproduce the above copyright |
42 | * notice, this list of conditions and the following disclaimer in the |
43 | * documentation and/or other materials provided with the distribution. |
44 | * |
45 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
46 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
47 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
48 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
49 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
50 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
51 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
52 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
53 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
54 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
55 | * SUCH DAMAGE. |
56 | * |
57 | * from FreeBSD: mlx.c,v 1.14.2.3 2000/08/04 06:52:50 msmith Exp |
58 | */ |
59 | |
60 | /* |
61 | * Driver for the Mylex DAC960 family of RAID controllers. |
62 | * |
63 | * TODO: |
64 | * |
65 | * o Test and enable channel pause. |
66 | * o SCSI pass-through. |
67 | */ |
68 | |
69 | #include <sys/cdefs.h> |
70 | __KERNEL_RCSID(0, "$NetBSD: mlx.c,v 1.65 2016/09/27 03:33:32 pgoyette Exp $" ); |
71 | |
72 | #if defined(_KERNEL_OPT) |
73 | #include "ld.h" |
74 | #endif |
75 | |
76 | #include <sys/param.h> |
77 | #include <sys/systm.h> |
78 | #include <sys/kernel.h> |
79 | #include <sys/device.h> |
80 | #include <sys/queue.h> |
81 | #include <sys/proc.h> |
82 | #include <sys/buf.h> |
83 | #include <sys/bufq.h> |
84 | #include <sys/endian.h> |
85 | #include <sys/malloc.h> |
86 | #include <sys/conf.h> |
87 | #include <sys/kthread.h> |
88 | #include <sys/disk.h> |
89 | #include <sys/kauth.h> |
90 | #include <sys/module.h> |
91 | #include <machine/vmparam.h> |
92 | #include <sys/bus.h> |
93 | |
94 | #include <dev/ldvar.h> |
95 | |
96 | #include <dev/ic/mlxreg.h> |
97 | #include <dev/ic/mlxio.h> |
98 | #include <dev/ic/mlxvar.h> |
99 | |
100 | #include "locators.h" |
101 | |
102 | #define MLX_TIMEOUT 60 |
103 | |
104 | #ifdef DIAGNOSTIC |
105 | #define DPRINTF(x) printf x |
106 | #else |
107 | #define DPRINTF(x) |
108 | #endif |
109 | |
110 | static void mlx_adjqparam(struct mlx_softc *, int, int); |
111 | static int mlx_ccb_submit(struct mlx_softc *, struct mlx_ccb *); |
112 | static int mlx_check(struct mlx_softc *, int); |
113 | static void mlx_describe(struct mlx_softc *); |
114 | static void *mlx_enquire(struct mlx_softc *, int, size_t, |
115 | void (*)(struct mlx_ccb *), int); |
116 | static int mlx_fw_message(struct mlx_softc *, int, int, int); |
117 | static void mlx_pause_action(struct mlx_softc *); |
118 | static void mlx_pause_done(struct mlx_ccb *); |
119 | static void mlx_periodic(struct mlx_softc *); |
120 | static void mlx_periodic_enquiry(struct mlx_ccb *); |
121 | static void mlx_periodic_eventlog_poll(struct mlx_softc *); |
122 | static void mlx_periodic_eventlog_respond(struct mlx_ccb *); |
123 | static void mlx_periodic_rebuild(struct mlx_ccb *); |
124 | static void mlx_periodic_thread(void *); |
125 | static int mlx_print(void *, const char *); |
126 | static int mlx_rebuild(struct mlx_softc *, int, int); |
127 | static void mlx_shutdown(void *); |
128 | static int mlx_user_command(struct mlx_softc *, struct mlx_usercommand *); |
129 | |
130 | dev_type_open(mlxopen); |
131 | dev_type_close(mlxclose); |
132 | dev_type_ioctl(mlxioctl); |
133 | |
134 | const struct cdevsw mlx_cdevsw = { |
135 | .d_open = mlxopen, |
136 | .d_close = mlxclose, |
137 | .d_read = noread, |
138 | .d_write = nowrite, |
139 | .d_ioctl = mlxioctl, |
140 | .d_stop = nostop, |
141 | .d_tty = notty, |
142 | .d_poll = nopoll, |
143 | .d_mmap = nommap, |
144 | .d_kqfilter = nokqfilter, |
145 | .d_discard = nodiscard, |
146 | .d_flag = D_OTHER |
147 | }; |
148 | |
149 | extern struct cfdriver mlx_cd; |
150 | static struct lwp *mlx_periodic_lwp; |
151 | static void *mlx_sdh; |
152 | |
153 | static struct { |
154 | int hwid; |
155 | const char *name; |
156 | } const mlx_cname[] = { |
157 | { 0x00, "960E/960M" }, |
158 | { 0x01, "960P/PD" }, |
159 | { 0x02, "960PL" }, |
160 | { 0x10, "960PG" }, |
161 | { 0x11, "960PJ" }, |
162 | { 0x12, "960PR" }, |
163 | { 0x13, "960PT" }, |
164 | { 0x14, "960PTL0" }, |
165 | { 0x15, "960PRL" }, |
166 | { 0x16, "960PTL1" }, |
167 | { 0x20, "1164PVX" }, |
168 | }; |
169 | |
170 | static const char * const mlx_sense_msgs[] = { |
171 | "because write recovery failed" , |
172 | "because of SCSI bus reset failure" , |
173 | "because of double check condition" , |
174 | "because it was removed" , |
175 | "because of gross error on SCSI chip" , |
176 | "because of bad tag returned from drive" , |
177 | "because of timeout on SCSI command" , |
178 | "because of reset SCSI command issued from system" , |
179 | "because busy or parity error count exceeded limit" , |
180 | "because of 'kill drive' command from system" , |
181 | "because of selection timeout" , |
182 | "due to SCSI phase sequence error" , |
183 | "due to unknown status" |
184 | }; |
185 | |
186 | static const char * const mlx_status_msgs[] = { |
187 | "normal completion" , /* 0 */ |
188 | "irrecoverable data error" , /* 1 */ |
189 | "drive does not exist, or is offline" , /* 2 */ |
190 | "attempt to write beyond end of drive" , /* 3 */ |
191 | "bad data encountered" , /* 4 */ |
192 | "invalid log entry request" , /* 5 */ |
193 | "attempt to rebuild online drive" , /* 6 */ |
194 | "new disk failed during rebuild" , /* 7 */ |
195 | "invalid channel/target" , /* 8 */ |
196 | "rebuild/check already in progress" , /* 9 */ |
197 | "one or more disks are dead" , /* 10 */ |
198 | "invalid or non-redundant drive" , /* 11 */ |
199 | "channel is busy" , /* 12 */ |
200 | "channel is not stopped" , /* 13 */ |
201 | "rebuild successfully terminated" , /* 14 */ |
202 | "unsupported command" , /* 15 */ |
203 | "check condition received" , /* 16 */ |
204 | "device is busy" , /* 17 */ |
205 | "selection or command timeout" , /* 18 */ |
206 | "command terminated abnormally" , /* 19 */ |
207 | "controller wedged" , /* 20 */ |
208 | "software timeout" , /* 21 */ |
209 | "command busy (?)" , /* 22 */ |
210 | }; |
211 | |
212 | static struct { |
213 | u_char command; |
214 | u_char msg; /* Index into mlx_status_msgs[]. */ |
215 | u_short status; |
216 | } const mlx_msgs[] = { |
217 | { MLX_CMD_READSG, 1, 0x0001 }, |
218 | { MLX_CMD_READSG, 1, 0x0002 }, |
219 | { MLX_CMD_READSG, 3, 0x0105 }, |
220 | { MLX_CMD_READSG, 4, 0x010c }, |
221 | { MLX_CMD_WRITESG, 1, 0x0001 }, |
222 | { MLX_CMD_WRITESG, 1, 0x0002 }, |
223 | { MLX_CMD_WRITESG, 3, 0x0105 }, |
224 | { MLX_CMD_READSG_OLD, 1, 0x0001 }, |
225 | { MLX_CMD_READSG_OLD, 1, 0x0002 }, |
226 | { MLX_CMD_READSG_OLD, 3, 0x0105 }, |
227 | { MLX_CMD_WRITESG_OLD, 1, 0x0001 }, |
228 | { MLX_CMD_WRITESG_OLD, 1, 0x0002 }, |
229 | { MLX_CMD_WRITESG_OLD, 3, 0x0105 }, |
230 | { MLX_CMD_LOGOP, 5, 0x0105 }, |
231 | { MLX_CMD_REBUILDASYNC, 6, 0x0002 }, |
232 | { MLX_CMD_REBUILDASYNC, 7, 0x0004 }, |
233 | { MLX_CMD_REBUILDASYNC, 8, 0x0105 }, |
234 | { MLX_CMD_REBUILDASYNC, 9, 0x0106 }, |
235 | { MLX_CMD_REBUILDASYNC, 14, 0x0107 }, |
236 | { MLX_CMD_CHECKASYNC, 10, 0x0002 }, |
237 | { MLX_CMD_CHECKASYNC, 11, 0x0105 }, |
238 | { MLX_CMD_CHECKASYNC, 9, 0x0106 }, |
239 | { MLX_CMD_STOPCHANNEL, 12, 0x0106 }, |
240 | { MLX_CMD_STOPCHANNEL, 8, 0x0105 }, |
241 | { MLX_CMD_STARTCHANNEL, 13, 0x0005 }, |
242 | { MLX_CMD_STARTCHANNEL, 8, 0x0105 }, |
243 | { MLX_CMD_DIRECT_CDB, 16, 0x0002 }, |
244 | { MLX_CMD_DIRECT_CDB, 17, 0x0008 }, |
245 | { MLX_CMD_DIRECT_CDB, 18, 0x000e }, |
246 | { MLX_CMD_DIRECT_CDB, 19, 0x000f }, |
247 | { MLX_CMD_DIRECT_CDB, 8, 0x0105 }, |
248 | |
249 | { 0, 20, MLX_STATUS_WEDGED }, |
250 | { 0, 21, MLX_STATUS_LOST }, |
251 | { 0, 22, MLX_STATUS_BUSY }, |
252 | |
253 | { 0, 14, 0x0104 }, |
254 | }; |
255 | |
256 | /* |
257 | * Initialise the controller and our interface. |
258 | */ |
259 | void |
260 | mlx_init(struct mlx_softc *mlx, const char *intrstr) |
261 | { |
262 | struct mlx_ccb *mc; |
263 | struct mlx_enquiry_old *meo; |
264 | struct mlx_enquiry2 *me2; |
265 | struct mlx_cinfo *ci; |
266 | int rv, fwminor, hscode, hserr, hsparam1, hsparam2, hsmsg; |
267 | int size, i, rseg; |
268 | const char *wantfwstr; |
269 | bus_dma_segment_t seg; |
270 | |
271 | SIMPLEQ_INIT(&mlx->mlx_ccb_queue); |
272 | SLIST_INIT(&mlx->mlx_ccb_freelist); |
273 | TAILQ_INIT(&mlx->mlx_ccb_worklist); |
274 | |
275 | if (intrstr != NULL) |
276 | printf("%s: interrupting at %s\n" , device_xname(mlx->mlx_dv), |
277 | intrstr); |
278 | |
279 | /* |
280 | * Allocate the scatter/gather lists. |
281 | */ |
282 | size = MLX_SGL_SIZE * MLX_MAX_QUEUECNT; |
283 | |
284 | if ((rv = bus_dmamem_alloc(mlx->mlx_dmat, size, PAGE_SIZE, 0, &seg, 1, |
285 | &rseg, BUS_DMA_NOWAIT)) != 0) { |
286 | aprint_error_dev(mlx->mlx_dv, |
287 | "unable to allocate sglists, rv = %d\n" , rv); |
288 | return; |
289 | } |
290 | |
291 | if ((rv = bus_dmamem_map(mlx->mlx_dmat, &seg, rseg, size, |
292 | (void **)&mlx->mlx_sgls, |
293 | BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { |
294 | aprint_error_dev(mlx->mlx_dv, |
295 | "unable to map sglists, rv = %d\n" , rv); |
296 | return; |
297 | } |
298 | |
299 | if ((rv = bus_dmamap_create(mlx->mlx_dmat, size, 1, size, 0, |
300 | BUS_DMA_NOWAIT, &mlx->mlx_dmamap)) != 0) { |
301 | aprint_error_dev(mlx->mlx_dv, |
302 | "unable to create sglist DMA map, rv = %d\n" , rv); |
303 | return; |
304 | } |
305 | |
306 | if ((rv = bus_dmamap_load(mlx->mlx_dmat, mlx->mlx_dmamap, |
307 | mlx->mlx_sgls, size, NULL, BUS_DMA_NOWAIT)) != 0) { |
308 | aprint_error_dev(mlx->mlx_dv, |
309 | "unable to load sglist DMA map, rv = %d\n" , rv); |
310 | return; |
311 | } |
312 | |
313 | mlx->mlx_sgls_paddr = mlx->mlx_dmamap->dm_segs[0].ds_addr; |
314 | memset(mlx->mlx_sgls, 0, size); |
315 | |
316 | /* |
317 | * Allocate and initialize the CCBs. |
318 | */ |
319 | mc = malloc(sizeof(*mc) * MLX_MAX_QUEUECNT, M_DEVBUF, M_NOWAIT); |
320 | mlx->mlx_ccbs = mc; |
321 | |
322 | for (i = 0; i < MLX_MAX_QUEUECNT; i++, mc++) { |
323 | mc->mc_ident = i; |
324 | rv = bus_dmamap_create(mlx->mlx_dmat, MLX_MAX_XFER, |
325 | MLX_MAX_SEGS, MLX_MAX_XFER, 0, |
326 | BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, |
327 | &mc->mc_xfer_map); |
328 | if (rv != 0) |
329 | break; |
330 | mlx->mlx_nccbs++; |
331 | mlx_ccb_free(mlx, mc); |
332 | } |
333 | if (mlx->mlx_nccbs != MLX_MAX_QUEUECNT) |
334 | printf("%s: %d/%d CCBs usable\n" , device_xname(mlx->mlx_dv), |
335 | mlx->mlx_nccbs, MLX_MAX_QUEUECNT); |
336 | |
337 | /* Disable interrupts before we start talking to the controller */ |
338 | (*mlx->mlx_intaction)(mlx, 0); |
339 | |
340 | /* If we've got a reset routine, then reset the controller now. */ |
341 | if (mlx->mlx_reset != NULL) { |
342 | printf("%s: resetting controller...\n" , |
343 | device_xname(mlx->mlx_dv)); |
344 | if ((*mlx->mlx_reset)(mlx) != 0) { |
345 | aprint_error_dev(mlx->mlx_dv, "reset failed\n" ); |
346 | return; |
347 | } |
348 | } |
349 | |
350 | /* |
351 | * Wait for the controller to come ready, handshaking with the |
352 | * firmware if required. This is typically only necessary on |
353 | * platforms where the controller BIOS does not run. |
354 | */ |
355 | hsmsg = 0; |
356 | |
357 | for (;;) { |
358 | hscode = (*mlx->mlx_fw_handshake)(mlx, &hserr, &hsparam1, |
359 | &hsparam2); |
360 | if (hscode == 0) { |
361 | if (hsmsg != 0) |
362 | printf("%s: initialization complete\n" , |
363 | device_xname(mlx->mlx_dv)); |
364 | break; |
365 | } |
366 | |
367 | /* Report first time around... */ |
368 | if (hsmsg == 0) { |
369 | printf("%s: initializing (may take some time)...\n" , |
370 | device_xname(mlx->mlx_dv)); |
371 | hsmsg = 1; |
372 | } |
373 | |
374 | /* Did we get a real message? */ |
375 | if (hscode == 2) { |
376 | hscode = mlx_fw_message(mlx, hserr, hsparam1, hsparam2); |
377 | |
378 | /* Fatal initialisation error? */ |
379 | if (hscode != 0) |
380 | return; |
381 | } |
382 | } |
383 | |
384 | /* |
385 | * Do quirk/feature related things. |
386 | */ |
387 | ci = &mlx->mlx_ci; |
388 | |
389 | if (ci->ci_iftype > 1) { |
390 | me2 = mlx_enquire(mlx, MLX_CMD_ENQUIRY2, |
391 | sizeof(struct mlx_enquiry2), NULL, 0); |
392 | if (me2 == NULL) { |
393 | aprint_error_dev(mlx->mlx_dv, "ENQUIRY2 failed\n" ); |
394 | return; |
395 | } |
396 | |
397 | ci->ci_firmware_id[0] = me2->me_firmware_id[0]; |
398 | ci->ci_firmware_id[1] = me2->me_firmware_id[1]; |
399 | ci->ci_firmware_id[2] = me2->me_firmware_id[2]; |
400 | ci->ci_firmware_id[3] = me2->me_firmware_id[3]; |
401 | ci->ci_hardware_id = me2->me_hardware_id[0]; |
402 | ci->ci_mem_size = le32toh(me2->me_mem_size); |
403 | ci->ci_max_sg = le16toh(me2->me_max_sg); |
404 | ci->ci_max_commands = le16toh(me2->me_max_commands); |
405 | ci->ci_nchan = me2->me_actual_channels; |
406 | |
407 | free(me2, M_DEVBUF); |
408 | } |
409 | |
410 | if (ci->ci_iftype <= 2) { |
411 | /* |
412 | * These controllers may not report the firmware version in |
413 | * the ENQUIRY2 response, or may not even support it. |
414 | */ |
415 | meo = mlx_enquire(mlx, MLX_CMD_ENQUIRY_OLD, |
416 | sizeof(struct mlx_enquiry_old), NULL, 0); |
417 | if (meo == NULL) { |
418 | aprint_error_dev(mlx->mlx_dv, "ENQUIRY_OLD failed\n" ); |
419 | return; |
420 | } |
421 | ci->ci_firmware_id[0] = meo->me_fwmajor; |
422 | ci->ci_firmware_id[1] = meo->me_fwminor; |
423 | ci->ci_firmware_id[2] = 0; |
424 | ci->ci_firmware_id[3] = '0'; |
425 | |
426 | if (ci->ci_iftype == 1) { |
427 | ci->ci_hardware_id = 0; /* XXX */ |
428 | ci->ci_mem_size = 0; /* XXX */ |
429 | ci->ci_max_sg = 17; /* XXX */ |
430 | ci->ci_max_commands = meo->me_max_commands; |
431 | } |
432 | |
433 | free(meo, M_DEVBUF); |
434 | } |
435 | |
436 | wantfwstr = NULL; |
437 | fwminor = ci->ci_firmware_id[1]; |
438 | |
439 | switch (ci->ci_firmware_id[0]) { |
440 | case 2: |
441 | if (ci->ci_iftype == 1) { |
442 | if (fwminor < 14) |
443 | wantfwstr = "2.14" ; |
444 | } else if (fwminor < 42) |
445 | wantfwstr = "2.42" ; |
446 | break; |
447 | |
448 | case 3: |
449 | if (fwminor < 51) |
450 | wantfwstr = "3.51" ; |
451 | break; |
452 | |
453 | case 4: |
454 | if (fwminor < 6) |
455 | wantfwstr = "4.06" ; |
456 | break; |
457 | |
458 | case 5: |
459 | if (fwminor < 7) |
460 | wantfwstr = "5.07" ; |
461 | break; |
462 | } |
463 | |
464 | /* Print a little information about the controller. */ |
465 | mlx_describe(mlx); |
466 | |
467 | if (wantfwstr != NULL) { |
468 | printf("%s: WARNING: this f/w revision is not recommended\n" , |
469 | device_xname(mlx->mlx_dv)); |
470 | printf("%s: WARNING: use revision %s or later\n" , |
471 | device_xname(mlx->mlx_dv), wantfwstr); |
472 | } |
473 | |
474 | /* We don't (yet) know where the event log is up to. */ |
475 | mlx->mlx_currevent = -1; |
476 | |
477 | /* No user-requested background operation is in progress. */ |
478 | mlx->mlx_bg = 0; |
479 | mlx->mlx_rebuildstat.rs_code = MLX_REBUILDSTAT_IDLE; |
480 | |
481 | /* Set maximum number of queued commands for `regular' operations. */ |
482 | mlx->mlx_max_queuecnt = |
483 | min(ci->ci_max_commands, MLX_MAX_QUEUECNT) - |
484 | MLX_NCCBS_CONTROL; |
485 | #ifdef DIAGNOSTIC |
486 | if (mlx->mlx_max_queuecnt < MLX_NCCBS_CONTROL + MLX_MAX_DRIVES) |
487 | printf("%s: WARNING: few CCBs available\n" , |
488 | device_xname(mlx->mlx_dv)); |
489 | if (ci->ci_max_sg < MLX_MAX_SEGS) { |
490 | aprint_error_dev(mlx->mlx_dv, |
491 | "oops, not enough S/G segments\n" ); |
492 | return; |
493 | } |
494 | #endif |
495 | |
496 | /* Attach child devices and enable interrupts. */ |
497 | mlx_configure(mlx, 0); |
498 | (*mlx->mlx_intaction)(mlx, 1); |
499 | mlx->mlx_flags |= MLXF_INITOK; |
500 | |
501 | if (mlx_sdh == NULL) { |
502 | /* |
503 | * Set our `shutdownhook' before we start any device |
504 | * activity. |
505 | */ |
506 | mlx_sdh = shutdownhook_establish(mlx_shutdown, NULL); |
507 | |
508 | /* Create a status monitoring thread. */ |
509 | rv = kthread_create(PRI_NONE, 0, NULL, mlx_periodic_thread, |
510 | NULL, &mlx_periodic_lwp, "mlxtask" ); |
511 | if (rv != 0) |
512 | aprint_error_dev(mlx->mlx_dv, |
513 | "mlx_init: unable to create thread (%d)\n" , rv); |
514 | } |
515 | } |
516 | |
517 | /* |
518 | * Tell the world about the controller. |
519 | */ |
520 | static void |
521 | mlx_describe(struct mlx_softc *mlx) |
522 | { |
523 | struct mlx_cinfo *ci; |
524 | static char tbuf[80]; |
525 | const char *model; |
526 | int i; |
527 | |
528 | model = NULL; |
529 | ci = &mlx->mlx_ci; |
530 | |
531 | for (i = 0; i < sizeof(mlx_cname) / sizeof(mlx_cname[0]); i++) |
532 | if (ci->ci_hardware_id == mlx_cname[i].hwid) { |
533 | model = mlx_cname[i].name; |
534 | break; |
535 | } |
536 | |
537 | if (model == NULL) { |
538 | snprintf(tbuf, sizeof(tbuf), " model 0x%x" , ci->ci_hardware_id); |
539 | model = tbuf; |
540 | } |
541 | |
542 | printf("%s: DAC%s, %d channel%s, firmware %d.%02d-%c-%02d" , |
543 | device_xname(mlx->mlx_dv), model, ci->ci_nchan, |
544 | ci->ci_nchan > 1 ? "s" : "" , |
545 | ci->ci_firmware_id[0], ci->ci_firmware_id[1], |
546 | ci->ci_firmware_id[3], ci->ci_firmware_id[2]); |
547 | if (ci->ci_mem_size != 0) |
548 | printf(", %dMB RAM" , ci->ci_mem_size >> 20); |
549 | printf("\n" ); |
550 | } |
551 | |
552 | /* |
553 | * Locate disk resources and attach children to them. |
554 | */ |
555 | int |
556 | mlx_configure(struct mlx_softc *mlx, int waitok) |
557 | { |
558 | struct mlx_enquiry *me; |
559 | struct mlx_enquiry_old *meo; |
560 | struct mlx_enq_sys_drive *mes; |
561 | struct mlx_sysdrive *ms; |
562 | struct mlx_attach_args mlxa; |
563 | int i, nunits; |
564 | u_int size; |
565 | int locs[MLXCF_NLOCS]; |
566 | |
567 | mlx->mlx_flags |= MLXF_RESCANNING; |
568 | |
569 | if (mlx->mlx_ci.ci_iftype <= 2) { |
570 | meo = mlx_enquire(mlx, MLX_CMD_ENQUIRY_OLD, |
571 | sizeof(struct mlx_enquiry_old), NULL, waitok); |
572 | if (meo == NULL) { |
573 | aprint_error_dev(mlx->mlx_dv, "ENQUIRY_OLD failed\n" ); |
574 | goto out; |
575 | } |
576 | mlx->mlx_numsysdrives = meo->me_num_sys_drvs; |
577 | free(meo, M_DEVBUF); |
578 | } else { |
579 | me = mlx_enquire(mlx, MLX_CMD_ENQUIRY, |
580 | sizeof(struct mlx_enquiry), NULL, waitok); |
581 | if (me == NULL) { |
582 | aprint_error_dev(mlx->mlx_dv, "ENQUIRY failed\n" ); |
583 | goto out; |
584 | } |
585 | mlx->mlx_numsysdrives = me->me_num_sys_drvs; |
586 | free(me, M_DEVBUF); |
587 | } |
588 | |
589 | mes = mlx_enquire(mlx, MLX_CMD_ENQSYSDRIVE, |
590 | sizeof(*mes) * MLX_MAX_DRIVES, NULL, waitok); |
591 | if (mes == NULL) { |
592 | aprint_error_dev(mlx->mlx_dv, "error fetching drive status\n" ); |
593 | goto out; |
594 | } |
595 | |
596 | /* Allow 1 queued command per unit while re-configuring. */ |
597 | mlx_adjqparam(mlx, 1, 0); |
598 | |
599 | ms = &mlx->mlx_sysdrive[0]; |
600 | nunits = 0; |
601 | for (i = 0; i < MLX_MAX_DRIVES; i++, ms++) { |
602 | size = le32toh(mes[i].sd_size); |
603 | ms->ms_state = mes[i].sd_state; |
604 | |
605 | /* |
606 | * If an existing device has changed in some way (e.g. no |
607 | * longer present) then detach it. |
608 | */ |
609 | if (ms->ms_dv != NULL && (size != ms->ms_size || |
610 | (mes[i].sd_raidlevel & 0xf) != ms->ms_raidlevel)) |
611 | config_detach(ms->ms_dv, DETACH_FORCE); |
612 | |
613 | ms->ms_size = size; |
614 | ms->ms_raidlevel = mes[i].sd_raidlevel & 0xf; |
615 | ms->ms_state = mes[i].sd_state; |
616 | ms->ms_dv = NULL; |
617 | |
618 | if (i >= mlx->mlx_numsysdrives) |
619 | continue; |
620 | if (size == 0xffffffffU || size == 0) |
621 | continue; |
622 | |
623 | /* |
624 | * Attach a new device. |
625 | */ |
626 | mlxa.mlxa_unit = i; |
627 | |
628 | locs[MLXCF_UNIT] = i; |
629 | |
630 | ms->ms_dv = config_found_sm_loc(mlx->mlx_dv, "mlx" , locs, |
631 | &mlxa, mlx_print, config_stdsubmatch); |
632 | nunits += (ms->ms_dv != NULL); |
633 | } |
634 | |
635 | free(mes, M_DEVBUF); |
636 | |
637 | if (nunits != 0) |
638 | mlx_adjqparam(mlx, mlx->mlx_max_queuecnt / nunits, |
639 | mlx->mlx_max_queuecnt % nunits); |
640 | out: |
641 | mlx->mlx_flags &= ~MLXF_RESCANNING; |
642 | |
643 | return 0; |
644 | } |
645 | |
646 | /* |
647 | * Print autoconfiguration message for a sub-device. |
648 | */ |
649 | static int |
650 | mlx_print(void *aux, const char *pnp) |
651 | { |
652 | struct mlx_attach_args *mlxa; |
653 | |
654 | mlxa = (struct mlx_attach_args *)aux; |
655 | |
656 | if (pnp != NULL) |
657 | aprint_normal("block device at %s" , pnp); |
658 | aprint_normal(" unit %d" , mlxa->mlxa_unit); |
659 | return (UNCONF); |
660 | } |
661 | |
662 | /* |
663 | * Shut down all configured `mlx' devices. |
664 | */ |
665 | static void |
666 | mlx_shutdown(void *cookie) |
667 | { |
668 | struct mlx_softc *mlx; |
669 | int i; |
670 | |
671 | for (i = 0; i < mlx_cd.cd_ndevs; i++) |
672 | if ((mlx = device_lookup_private(&mlx_cd, i)) != NULL) |
673 | mlx_flush(mlx, 0); |
674 | } |
675 | |
676 | /* |
677 | * Adjust queue parameters for all child devices. |
678 | */ |
679 | static void |
680 | mlx_adjqparam(struct mlx_softc *mlx, int mpu, int slop) |
681 | { |
682 | #if NLD > 0 |
683 | extern struct cfdriver ld_cd; |
684 | struct ld_softc *ld; |
685 | int i; |
686 | |
687 | for (i = 0; i < ld_cd.cd_ndevs; i++) { |
688 | if ((ld = device_lookup_private(&ld_cd, i)) == NULL) |
689 | continue; |
690 | if (device_parent(ld->sc_dv) != mlx->mlx_dv) |
691 | continue; |
692 | ldadjqparam(ld, mpu + (slop-- > 0)); |
693 | } |
694 | #endif |
695 | } |
696 | |
697 | /* |
698 | * Accept an open operation on the control device. |
699 | */ |
700 | int |
701 | mlxopen(dev_t dev, int flag, int mode, struct lwp *l) |
702 | { |
703 | struct mlx_softc *mlx; |
704 | |
705 | if ((mlx = device_lookup_private(&mlx_cd, minor(dev))) == NULL) |
706 | return (ENXIO); |
707 | if ((mlx->mlx_flags & MLXF_INITOK) == 0) |
708 | return (ENXIO); |
709 | if ((mlx->mlx_flags & MLXF_OPEN) != 0) |
710 | return (EBUSY); |
711 | |
712 | mlx->mlx_flags |= MLXF_OPEN; |
713 | return (0); |
714 | } |
715 | |
716 | /* |
717 | * Accept the last close on the control device. |
718 | */ |
719 | int |
720 | mlxclose(dev_t dev, int flag, int mode, struct lwp *l) |
721 | { |
722 | struct mlx_softc *mlx; |
723 | |
724 | mlx = device_lookup_private(&mlx_cd, minor(dev)); |
725 | mlx->mlx_flags &= ~MLXF_OPEN; |
726 | return (0); |
727 | } |
728 | |
729 | /* |
730 | * Handle control operations. |
731 | */ |
732 | int |
733 | mlxioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) |
734 | { |
735 | struct mlx_softc *mlx; |
736 | struct mlx_rebuild_request *rb; |
737 | struct mlx_rebuild_status *rs; |
738 | struct mlx_pause *mp; |
739 | struct mlx_sysdrive *ms; |
740 | int i, rv, *arg, result; |
741 | |
742 | mlx = device_lookup_private(&mlx_cd, minor(dev)); |
743 | |
744 | rb = (struct mlx_rebuild_request *)data; |
745 | rs = (struct mlx_rebuild_status *)data; |
746 | arg = (int *)data; |
747 | rv = 0; |
748 | |
749 | switch (cmd) { |
750 | case MLX_RESCAN_DRIVES: |
751 | /* |
752 | * Scan the controller to see whether new drives have |
753 | * appeared, or old ones disappeared. |
754 | */ |
755 | mlx_configure(mlx, 1); |
756 | return (0); |
757 | |
758 | case MLX_PAUSE_CHANNEL: |
759 | /* |
760 | * Pause one or more SCSI channels for a period of time, to |
761 | * assist in the process of hot-swapping devices. |
762 | * |
763 | * Note that at least the 3.51 firmware on the DAC960PL |
764 | * doesn't seem to do this right. |
765 | */ |
766 | if ((mlx->mlx_flags & MLXF_PAUSEWORKS) == 0) |
767 | return (EOPNOTSUPP); |
768 | |
769 | mp = (struct mlx_pause *)data; |
770 | |
771 | if ((mp->mp_which == MLX_PAUSE_CANCEL) && |
772 | (mlx->mlx_pause.mp_when != 0)) { |
773 | /* Cancel a pending pause operation. */ |
774 | mlx->mlx_pause.mp_which = 0; |
775 | break; |
776 | } |
777 | |
778 | /* Fix for legal channels. */ |
779 | mp->mp_which &= ((1 << mlx->mlx_ci.ci_nchan) -1); |
780 | |
781 | /* Check time values. */ |
782 | if (mp->mp_when < 0 || mp->mp_when > 3600 || |
783 | mp->mp_howlong < 1 || mp->mp_howlong > (0xf * 30)) { |
784 | rv = EINVAL; |
785 | break; |
786 | } |
787 | |
788 | /* Check for a pause currently running. */ |
789 | if ((mlx->mlx_pause.mp_which != 0) && |
790 | (mlx->mlx_pause.mp_when == 0)) { |
791 | rv = EBUSY; |
792 | break; |
793 | } |
794 | |
795 | /* Looks ok, go with it. */ |
796 | mlx->mlx_pause.mp_which = mp->mp_which; |
797 | mlx->mlx_pause.mp_when = time_second + mp->mp_when; |
798 | mlx->mlx_pause.mp_howlong = |
799 | mlx->mlx_pause.mp_when + mp->mp_howlong; |
800 | |
801 | return (0); |
802 | |
803 | case MLX_COMMAND: |
804 | rv = kauth_authorize_device_passthru(l->l_cred, dev, |
805 | KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_ALL, data); |
806 | if (rv) |
807 | return (rv); |
808 | |
809 | /* |
810 | * Accept a command passthrough-style. |
811 | */ |
812 | return (mlx_user_command(mlx, (struct mlx_usercommand *)data)); |
813 | |
814 | case MLX_REBUILDASYNC: |
815 | /* |
816 | * Start a rebuild on a given SCSI disk |
817 | */ |
818 | if (mlx->mlx_bg != 0) { |
819 | rb->rr_status = 0x0106; |
820 | rv = EBUSY; |
821 | break; |
822 | } |
823 | |
824 | rb->rr_status = mlx_rebuild(mlx, rb->rr_channel, rb->rr_target); |
825 | switch (rb->rr_status) { |
826 | case 0: |
827 | rv = 0; |
828 | break; |
829 | case 0x10000: |
830 | rv = ENOMEM; /* Couldn't set up the command. */ |
831 | break; |
832 | case 0x0002: |
833 | rv = EBUSY; |
834 | break; |
835 | case 0x0104: |
836 | rv = EIO; |
837 | break; |
838 | case 0x0105: |
839 | rv = ERANGE; |
840 | break; |
841 | case 0x0106: |
842 | rv = EBUSY; |
843 | break; |
844 | default: |
845 | rv = EINVAL; |
846 | break; |
847 | } |
848 | |
849 | if (rv == 0) |
850 | mlx->mlx_bg = MLX_BG_REBUILD; |
851 | |
852 | return (0); |
853 | |
854 | case MLX_REBUILDSTAT: |
855 | /* |
856 | * Get the status of the current rebuild or consistency check. |
857 | */ |
858 | *rs = mlx->mlx_rebuildstat; |
859 | return (0); |
860 | |
861 | case MLX_GET_SYSDRIVE: |
862 | /* |
863 | * Return the system drive number matching the `ld' device |
864 | * unit in (arg), if it happens to belong to us. |
865 | */ |
866 | for (i = 0; i < MLX_MAX_DRIVES; i++) { |
867 | ms = &mlx->mlx_sysdrive[i]; |
868 | if (ms->ms_dv != NULL) |
869 | if (device_xname(ms->ms_dv)[2] == '0' + *arg) { |
870 | *arg = i; |
871 | return (0); |
872 | } |
873 | } |
874 | return (ENOENT); |
875 | |
876 | case MLX_GET_CINFO: |
877 | /* |
878 | * Return controller info. |
879 | */ |
880 | memcpy(arg, &mlx->mlx_ci, sizeof(mlx->mlx_ci)); |
881 | return (0); |
882 | } |
883 | |
884 | switch (cmd) { |
885 | case MLXD_DETACH: |
886 | case MLXD_STATUS: |
887 | case MLXD_CHECKASYNC: |
888 | if ((u_int)*arg >= MLX_MAX_DRIVES) |
889 | return (EINVAL); |
890 | ms = &mlx->mlx_sysdrive[*arg]; |
891 | if (*arg > MLX_MAX_DRIVES || ms->ms_dv == NULL) |
892 | return (ENOENT); |
893 | break; |
894 | |
895 | default: |
896 | return (ENOTTY); |
897 | } |
898 | |
899 | switch (cmd) { |
900 | case MLXD_DETACH: |
901 | /* |
902 | * Disconnect from the specified drive; it may be about to go |
903 | * away. |
904 | */ |
905 | return (config_detach(ms->ms_dv, 0)); |
906 | |
907 | case MLXD_STATUS: |
908 | /* |
909 | * Return the current status of this drive. |
910 | */ |
911 | *arg = ms->ms_state; |
912 | return (0); |
913 | |
914 | case MLXD_CHECKASYNC: |
915 | /* |
916 | * Start a background consistency check on this drive. |
917 | */ |
918 | if (mlx->mlx_bg != 0) { |
919 | *arg = 0x0106; |
920 | return (EBUSY); |
921 | } |
922 | |
923 | switch (result = mlx_check(mlx, *arg)) { |
924 | case 0: |
925 | rv = 0; |
926 | break; |
927 | case 0x10000: |
928 | rv = ENOMEM; /* Couldn't set up the command. */ |
929 | break; |
930 | case 0x0002: |
931 | rv = EIO; |
932 | break; |
933 | case 0x0105: |
934 | rv = ERANGE; |
935 | break; |
936 | case 0x0106: |
937 | rv = EBUSY; |
938 | break; |
939 | default: |
940 | rv = EINVAL; |
941 | break; |
942 | } |
943 | |
944 | if (rv == 0) |
945 | mlx->mlx_bg = MLX_BG_CHECK; |
946 | *arg = result; |
947 | return (rv); |
948 | } |
949 | |
950 | return (ENOTTY); /* XXX shut up gcc */ |
951 | } |
952 | |
953 | static void |
954 | mlx_periodic_thread(void *cookie) |
955 | { |
956 | struct mlx_softc *mlx; |
957 | int i; |
958 | |
959 | for (;;) { |
960 | for (i = 0; i < mlx_cd.cd_ndevs; i++) |
961 | if ((mlx = device_lookup_private(&mlx_cd, i)) != NULL) |
962 | if (mlx->mlx_ci.ci_iftype > 1) |
963 | mlx_periodic(mlx); |
964 | |
965 | tsleep(mlx_periodic_thread, PWAIT, "mlxzzz" , hz * 2); |
966 | } |
967 | } |
968 | |
969 | static void |
970 | mlx_periodic(struct mlx_softc *mlx) |
971 | { |
972 | struct mlx_ccb *mc, *nmc; |
973 | int etype, s; |
974 | |
975 | if ((mlx->mlx_pause.mp_which != 0) && |
976 | (mlx->mlx_pause.mp_when > 0) && |
977 | (time_second >= mlx->mlx_pause.mp_when)) { |
978 | /* |
979 | * Start bus pause. |
980 | */ |
981 | mlx_pause_action(mlx); |
982 | mlx->mlx_pause.mp_when = 0; |
983 | } else if ((mlx->mlx_pause.mp_which != 0) && |
984 | (mlx->mlx_pause.mp_when == 0)) { |
985 | /* |
986 | * Stop pause if required. |
987 | */ |
988 | if (time_second >= mlx->mlx_pause.mp_howlong) { |
989 | mlx_pause_action(mlx); |
990 | mlx->mlx_pause.mp_which = 0; |
991 | } |
992 | } else if (time_second > (mlx->mlx_lastpoll + 10)) { |
993 | /* |
994 | * Run normal periodic activities... |
995 | */ |
996 | mlx->mlx_lastpoll = time_second; |
997 | |
998 | /* |
999 | * Check controller status. |
1000 | */ |
1001 | if ((mlx->mlx_flags & MLXF_PERIODIC_CTLR) == 0) { |
1002 | mlx->mlx_flags |= MLXF_PERIODIC_CTLR; |
1003 | |
1004 | if (mlx->mlx_ci.ci_iftype <= 2) |
1005 | etype = MLX_CMD_ENQUIRY_OLD; |
1006 | else |
1007 | etype = MLX_CMD_ENQUIRY; |
1008 | |
1009 | mlx_enquire(mlx, etype, max(sizeof(struct mlx_enquiry), |
1010 | sizeof(struct mlx_enquiry_old)), |
1011 | mlx_periodic_enquiry, 1); |
1012 | } |
1013 | |
1014 | /* |
1015 | * Check system drive status. |
1016 | */ |
1017 | if ((mlx->mlx_flags & MLXF_PERIODIC_DRIVE) == 0) { |
1018 | mlx->mlx_flags |= MLXF_PERIODIC_DRIVE; |
1019 | mlx_enquire(mlx, MLX_CMD_ENQSYSDRIVE, |
1020 | sizeof(struct mlx_enq_sys_drive) * MLX_MAX_DRIVES, |
1021 | mlx_periodic_enquiry, 1); |
1022 | } |
1023 | } |
1024 | |
1025 | /* |
1026 | * Get drive rebuild/check status. |
1027 | */ |
1028 | if ((mlx->mlx_flags & MLXF_PERIODIC_REBUILD) == 0) { |
1029 | mlx->mlx_flags |= MLXF_PERIODIC_REBUILD; |
1030 | mlx_enquire(mlx, MLX_CMD_REBUILDSTAT, |
1031 | sizeof(struct mlx_rebuild_stat), mlx_periodic_rebuild, 1); |
1032 | } |
1033 | |
1034 | /* |
1035 | * Time-out busy CCBs. |
1036 | */ |
1037 | s = splbio(); |
1038 | for (mc = TAILQ_FIRST(&mlx->mlx_ccb_worklist); mc != NULL; mc = nmc) { |
1039 | nmc = TAILQ_NEXT(mc, mc_chain.tailq); |
1040 | if (mc->mc_expiry > time_second) { |
1041 | /* |
1042 | * The remaining CCBs will expire after this one, so |
1043 | * there's no point in going further. |
1044 | */ |
1045 | break; |
1046 | } |
1047 | TAILQ_REMOVE(&mlx->mlx_ccb_worklist, mc, mc_chain.tailq); |
1048 | mc->mc_status = MLX_STATUS_LOST; |
1049 | if (mc->mc_mx.mx_handler != NULL) |
1050 | (*mc->mc_mx.mx_handler)(mc); |
1051 | else if ((mc->mc_flags & MC_WAITING) != 0) |
1052 | wakeup(mc); |
1053 | } |
1054 | splx(s); |
1055 | } |
1056 | |
1057 | /* |
1058 | * Handle the result of an ENQUIRY command instigated by periodic status |
1059 | * polling. |
1060 | */ |
1061 | static void |
1062 | mlx_periodic_enquiry(struct mlx_ccb *mc) |
1063 | { |
1064 | struct mlx_softc *mlx; |
1065 | struct mlx_enquiry *me; |
1066 | struct mlx_enquiry_old *meo; |
1067 | struct mlx_enq_sys_drive *mes; |
1068 | struct mlx_sysdrive *dr; |
1069 | const char *statestr; |
1070 | int i, j; |
1071 | u_int lsn; |
1072 | |
1073 | mlx = device_private(mc->mc_mx.mx_dv); |
1074 | mlx_ccb_unmap(mlx, mc); |
1075 | |
1076 | /* |
1077 | * Command completed OK? |
1078 | */ |
1079 | if (mc->mc_status != 0) { |
1080 | aprint_error_dev(mlx->mlx_dv, "periodic enquiry failed - %s\n" , |
1081 | mlx_ccb_diagnose(mc)); |
1082 | goto out; |
1083 | } |
1084 | |
1085 | /* |
1086 | * Respond to command. |
1087 | */ |
1088 | switch (mc->mc_mbox[0]) { |
1089 | case MLX_CMD_ENQUIRY_OLD: |
1090 | /* |
1091 | * This is currently a bit fruitless, as we don't know how |
1092 | * to extract the eventlog pointer yet. |
1093 | */ |
1094 | me = (struct mlx_enquiry *)mc->mc_mx.mx_context; |
1095 | meo = (struct mlx_enquiry_old *)mc->mc_mx.mx_context; |
1096 | |
1097 | /* Convert data in-place to new format */ |
1098 | i = sizeof(me->me_dead) / sizeof(me->me_dead[0]); |
1099 | while (--i >= 0) { |
1100 | me->me_dead[i].dd_chan = meo->me_dead[i].dd_chan; |
1101 | me->me_dead[i].dd_targ = meo->me_dead[i].dd_targ; |
1102 | } |
1103 | |
1104 | me->me_misc_flags = 0; |
1105 | me->me_rebuild_count = meo->me_rebuild_count; |
1106 | me->me_dead_count = meo->me_dead_count; |
1107 | me->me_critical_sd_count = meo->me_critical_sd_count; |
1108 | me->me_event_log_seq_num = 0; |
1109 | me->me_offline_sd_count = meo->me_offline_sd_count; |
1110 | me->me_max_commands = meo->me_max_commands; |
1111 | me->me_rebuild_flag = meo->me_rebuild_flag; |
1112 | me->me_fwmajor = meo->me_fwmajor; |
1113 | me->me_fwminor = meo->me_fwminor; |
1114 | me->me_status_flags = meo->me_status_flags; |
1115 | me->me_flash_age = meo->me_flash_age; |
1116 | |
1117 | i = sizeof(me->me_drvsize) / sizeof(me->me_drvsize[0]); |
1118 | j = sizeof(meo->me_drvsize) / sizeof(meo->me_drvsize[0]); |
1119 | |
1120 | while (--i >= 0) { |
1121 | if (i >= j) |
1122 | me->me_drvsize[i] = 0; |
1123 | else |
1124 | me->me_drvsize[i] = meo->me_drvsize[i]; |
1125 | } |
1126 | |
1127 | me->me_num_sys_drvs = meo->me_num_sys_drvs; |
1128 | |
1129 | /* FALLTHROUGH */ |
1130 | |
1131 | case MLX_CMD_ENQUIRY: |
1132 | /* |
1133 | * Generic controller status update. We could do more with |
1134 | * this than just checking the event log. |
1135 | */ |
1136 | me = (struct mlx_enquiry *)mc->mc_mx.mx_context; |
1137 | lsn = le16toh(me->me_event_log_seq_num); |
1138 | |
1139 | if (mlx->mlx_currevent == -1) { |
1140 | /* Initialise our view of the event log. */ |
1141 | mlx->mlx_currevent = lsn; |
1142 | mlx->mlx_lastevent = lsn; |
1143 | } else if (lsn != mlx->mlx_lastevent && |
1144 | (mlx->mlx_flags & MLXF_EVENTLOG_BUSY) == 0) { |
1145 | /* Record where current events are up to */ |
1146 | mlx->mlx_currevent = lsn; |
1147 | |
1148 | /* Mark the event log as busy. */ |
1149 | mlx->mlx_flags |= MLXF_EVENTLOG_BUSY; |
1150 | |
1151 | /* Drain new eventlog entries. */ |
1152 | mlx_periodic_eventlog_poll(mlx); |
1153 | } |
1154 | break; |
1155 | |
1156 | case MLX_CMD_ENQSYSDRIVE: |
1157 | /* |
1158 | * Perform drive status comparison to see if something |
1159 | * has failed. Don't perform the comparison if we're |
1160 | * reconfiguring, since the system drive table will be |
1161 | * changing. |
1162 | */ |
1163 | if ((mlx->mlx_flags & MLXF_RESCANNING) != 0) |
1164 | break; |
1165 | |
1166 | mes = (struct mlx_enq_sys_drive *)mc->mc_mx.mx_context; |
1167 | dr = &mlx->mlx_sysdrive[0]; |
1168 | |
1169 | for (i = 0; i < mlx->mlx_numsysdrives; i++, dr++) { |
1170 | /* Has state been changed by controller? */ |
1171 | if (dr->ms_state != mes[i].sd_state) { |
1172 | switch (mes[i].sd_state) { |
1173 | case MLX_SYSD_OFFLINE: |
1174 | statestr = "offline" ; |
1175 | break; |
1176 | |
1177 | case MLX_SYSD_ONLINE: |
1178 | statestr = "online" ; |
1179 | break; |
1180 | |
1181 | case MLX_SYSD_CRITICAL: |
1182 | statestr = "critical" ; |
1183 | break; |
1184 | |
1185 | default: |
1186 | statestr = "unknown" ; |
1187 | break; |
1188 | } |
1189 | |
1190 | printf("%s: unit %d %s\n" , |
1191 | device_xname(mlx->mlx_dv), i, statestr); |
1192 | |
1193 | /* Save new state. */ |
1194 | dr->ms_state = mes[i].sd_state; |
1195 | } |
1196 | } |
1197 | break; |
1198 | |
1199 | #ifdef DIAGNOSTIC |
1200 | default: |
1201 | printf("%s: mlx_periodic_enquiry: eh?\n" , |
1202 | device_xname(mlx->mlx_dv)); |
1203 | break; |
1204 | #endif |
1205 | } |
1206 | |
1207 | out: |
1208 | if (mc->mc_mbox[0] == MLX_CMD_ENQSYSDRIVE) |
1209 | mlx->mlx_flags &= ~MLXF_PERIODIC_DRIVE; |
1210 | else |
1211 | mlx->mlx_flags &= ~MLXF_PERIODIC_CTLR; |
1212 | |
1213 | free(mc->mc_mx.mx_context, M_DEVBUF); |
1214 | mlx_ccb_free(mlx, mc); |
1215 | } |
1216 | |
1217 | /* |
1218 | * Instigate a poll for one event log message on (mlx). We only poll for |
1219 | * one message at a time, to keep our command usage down. |
1220 | */ |
1221 | static void |
1222 | mlx_periodic_eventlog_poll(struct mlx_softc *mlx) |
1223 | { |
1224 | struct mlx_ccb *mc; |
1225 | void *result; |
1226 | int rv; |
1227 | |
1228 | result = NULL; |
1229 | |
1230 | if ((rv = mlx_ccb_alloc(mlx, &mc, 1)) != 0) |
1231 | goto out; |
1232 | |
1233 | if ((result = malloc(1024, M_DEVBUF, M_WAITOK)) == NULL) { |
1234 | rv = ENOMEM; |
1235 | goto out; |
1236 | } |
1237 | if ((rv = mlx_ccb_map(mlx, mc, result, 1024, MC_XFER_IN)) != 0) |
1238 | goto out; |
1239 | if (mc->mc_nsgent != 1) { |
1240 | mlx_ccb_unmap(mlx, mc); |
1241 | printf("mlx_periodic_eventlog_poll: too many segs\n" ); |
1242 | goto out; |
1243 | } |
1244 | |
1245 | /* Build the command to get one log entry. */ |
1246 | mlx_make_type3(mc, MLX_CMD_LOGOP, MLX_LOGOP_GET, 1, |
1247 | mlx->mlx_lastevent, 0, 0, mc->mc_xfer_phys, 0); |
1248 | |
1249 | mc->mc_mx.mx_handler = mlx_periodic_eventlog_respond; |
1250 | mc->mc_mx.mx_dv = mlx->mlx_dv; |
1251 | mc->mc_mx.mx_context = result; |
1252 | |
1253 | /* Start the command. */ |
1254 | mlx_ccb_enqueue(mlx, mc); |
1255 | |
1256 | out: |
1257 | if (rv != 0) { |
1258 | if (mc != NULL) |
1259 | mlx_ccb_free(mlx, mc); |
1260 | if (result != NULL) |
1261 | free(result, M_DEVBUF); |
1262 | } |
1263 | } |
1264 | |
1265 | /* |
1266 | * Handle the result of polling for a log message, generate diagnostic |
1267 | * output. If this wasn't the last message waiting for us, we'll go collect |
1268 | * another. |
1269 | */ |
1270 | static void |
1271 | mlx_periodic_eventlog_respond(struct mlx_ccb *mc) |
1272 | { |
1273 | struct mlx_softc *mlx; |
1274 | struct mlx_eventlog_entry *el; |
1275 | const char *reason; |
1276 | u_int8_t sensekey, chan, targ; |
1277 | |
1278 | mlx = device_private(mc->mc_mx.mx_dv); |
1279 | el = mc->mc_mx.mx_context; |
1280 | mlx_ccb_unmap(mlx, mc); |
1281 | |
1282 | mlx->mlx_lastevent++; |
1283 | |
1284 | if (mc->mc_status == 0) { |
1285 | switch (el->el_type) { |
1286 | case MLX_LOGMSG_SENSE: /* sense data */ |
1287 | sensekey = el->el_sense & 0x0f; |
1288 | chan = (el->el_target >> 4) & 0x0f; |
1289 | targ = el->el_target & 0x0f; |
1290 | |
1291 | /* |
1292 | * This is the only sort of message we understand at |
1293 | * the moment. The tests here are probably |
1294 | * incomplete. |
1295 | */ |
1296 | |
1297 | /* |
1298 | * Mylex vendor-specific message indicating a drive |
1299 | * was killed? |
1300 | */ |
1301 | if (sensekey == 9 && el->el_asc == 0x80) { |
1302 | if (el->el_asq < sizeof(mlx_sense_msgs) / |
1303 | sizeof(mlx_sense_msgs[0])) |
1304 | reason = mlx_sense_msgs[el->el_asq]; |
1305 | else |
1306 | reason = "for unknown reason" ; |
1307 | |
1308 | printf("%s: physical drive %d:%d killed %s\n" , |
1309 | device_xname(mlx->mlx_dv), chan, targ, |
1310 | reason); |
1311 | } |
1312 | |
1313 | /* |
1314 | * SCSI drive was reset? |
1315 | */ |
1316 | if (sensekey == 6 && el->el_asc == 0x29) |
1317 | printf("%s: physical drive %d:%d reset\n" , |
1318 | device_xname(mlx->mlx_dv), chan, targ); |
1319 | |
1320 | /* |
1321 | * SCSI drive error? |
1322 | */ |
1323 | if (!(sensekey == 0 || |
1324 | (sensekey == 2 && |
1325 | el->el_asc == 0x04 && |
1326 | (el->el_asq == 0x01 || el->el_asq == 0x02)))) { |
1327 | printf("%s: physical drive %d:%d error log: " |
1328 | "sense = %d asc = %x asq = %x\n" , |
1329 | device_xname(mlx->mlx_dv), chan, targ, |
1330 | sensekey, el->el_asc, el->el_asq); |
1331 | printf("%s: info = %d:%d:%d:%d " |
1332 | " csi = %d:%d:%d:%d\n" , |
1333 | device_xname(mlx->mlx_dv), |
1334 | el->el_information[0], |
1335 | el->el_information[1], |
1336 | el->el_information[2], |
1337 | el->el_information[3], |
1338 | el->el_csi[0], el->el_csi[1], |
1339 | el->el_csi[2], el->el_csi[3]); |
1340 | } |
1341 | |
1342 | break; |
1343 | |
1344 | default: |
1345 | aprint_error_dev(mlx->mlx_dv, |
1346 | "unknown log message type 0x%x\n" , el->el_type); |
1347 | break; |
1348 | } |
1349 | } else { |
1350 | aprint_error_dev(mlx->mlx_dv, |
1351 | "error reading message log - %s\n" , mlx_ccb_diagnose(mc)); |
1352 | |
1353 | /* |
1354 | * Give up on all the outstanding messages, as we may have |
1355 | * come unsynched. |
1356 | */ |
1357 | mlx->mlx_lastevent = mlx->mlx_currevent; |
1358 | } |
1359 | |
1360 | free(mc->mc_mx.mx_context, M_DEVBUF); |
1361 | mlx_ccb_free(mlx, mc); |
1362 | |
1363 | /* |
1364 | * Is there another message to obtain? |
1365 | */ |
1366 | if (mlx->mlx_lastevent != mlx->mlx_currevent) |
1367 | mlx_periodic_eventlog_poll(mlx); |
1368 | else |
1369 | mlx->mlx_flags &= ~MLXF_EVENTLOG_BUSY; |
1370 | } |
1371 | |
1372 | /* |
1373 | * Handle check/rebuild operations in progress. |
1374 | */ |
1375 | static void |
1376 | mlx_periodic_rebuild(struct mlx_ccb *mc) |
1377 | { |
1378 | struct mlx_softc *mlx; |
1379 | const char *opstr; |
1380 | struct mlx_rebuild_status *mr; |
1381 | |
1382 | mlx = device_private(mc->mc_mx.mx_dv); |
1383 | mr = mc->mc_mx.mx_context; |
1384 | mlx_ccb_unmap(mlx, mc); |
1385 | |
1386 | switch (mc->mc_status) { |
1387 | case 0: |
1388 | /* |
1389 | * Operation running, update stats. |
1390 | */ |
1391 | mlx->mlx_rebuildstat = *mr; |
1392 | |
1393 | /* Spontaneous rebuild/check? */ |
1394 | if (mlx->mlx_bg == 0) { |
1395 | mlx->mlx_bg = MLX_BG_SPONTANEOUS; |
1396 | printf("%s: background check/rebuild started\n" , |
1397 | device_xname(mlx->mlx_dv)); |
1398 | } |
1399 | break; |
1400 | |
1401 | case 0x0105: |
1402 | /* |
1403 | * Nothing running, finalise stats and report. |
1404 | */ |
1405 | switch (mlx->mlx_bg) { |
1406 | case MLX_BG_CHECK: |
1407 | /* XXX Print drive? */ |
1408 | opstr = "consistency check" ; |
1409 | break; |
1410 | |
1411 | case MLX_BG_REBUILD: |
1412 | /* XXX Print channel:target? */ |
1413 | opstr = "drive rebuild" ; |
1414 | break; |
1415 | |
1416 | case MLX_BG_SPONTANEOUS: |
1417 | default: |
1418 | /* |
1419 | * If we have previously been non-idle, report the |
1420 | * transition |
1421 | */ |
1422 | if (mlx->mlx_rebuildstat.rs_code != |
1423 | MLX_REBUILDSTAT_IDLE) |
1424 | opstr = "background check/rebuild" ; |
1425 | else |
1426 | opstr = NULL; |
1427 | } |
1428 | |
1429 | if (opstr != NULL) |
1430 | printf("%s: %s completed\n" , device_xname(mlx->mlx_dv), |
1431 | opstr); |
1432 | |
1433 | mlx->mlx_bg = 0; |
1434 | mlx->mlx_rebuildstat.rs_code = MLX_REBUILDSTAT_IDLE; |
1435 | break; |
1436 | } |
1437 | |
1438 | free(mc->mc_mx.mx_context, M_DEVBUF); |
1439 | mlx_ccb_free(mlx, mc); |
1440 | mlx->mlx_flags &= ~MLXF_PERIODIC_REBUILD; |
1441 | } |
1442 | |
1443 | /* |
1444 | * It's time to perform a channel pause action for (mlx), either start or |
1445 | * stop the pause. |
1446 | */ |
1447 | static void |
1448 | mlx_pause_action(struct mlx_softc *mlx) |
1449 | { |
1450 | struct mlx_ccb *mc; |
1451 | int failsafe, i, cmd; |
1452 | |
1453 | /* What are we doing here? */ |
1454 | if (mlx->mlx_pause.mp_when == 0) { |
1455 | cmd = MLX_CMD_STARTCHANNEL; |
1456 | failsafe = 0; |
1457 | } else { |
1458 | cmd = MLX_CMD_STOPCHANNEL; |
1459 | |
1460 | /* |
1461 | * Channels will always start again after the failsafe |
1462 | * period, which is specified in multiples of 30 seconds. |
1463 | * This constrains us to a maximum pause of 450 seconds. |
1464 | */ |
1465 | failsafe = ((mlx->mlx_pause.mp_howlong - time_second) + 5) / 30; |
1466 | |
1467 | if (failsafe > 0xf) { |
1468 | failsafe = 0xf; |
1469 | mlx->mlx_pause.mp_howlong = |
1470 | time_second + (0xf * 30) - 5; |
1471 | } |
1472 | } |
1473 | |
1474 | /* Build commands for every channel requested. */ |
1475 | for (i = 0; i < mlx->mlx_ci.ci_nchan; i++) { |
1476 | if ((1 << i) & mlx->mlx_pause.mp_which) { |
1477 | if (mlx_ccb_alloc(mlx, &mc, 1) != 0) { |
1478 | aprint_error_dev(mlx->mlx_dv, |
1479 | "%s failed for channel %d\n" , |
1480 | cmd == MLX_CMD_STOPCHANNEL ? |
1481 | "pause" : "resume" , i); |
1482 | continue; |
1483 | } |
1484 | |
1485 | /* Build the command. */ |
1486 | mlx_make_type2(mc, cmd, (failsafe << 4) | i, 0, 0, |
1487 | 0, 0, 0, 0, 0); |
1488 | mc->mc_mx.mx_handler = mlx_pause_done; |
1489 | mc->mc_mx.mx_dv = mlx->mlx_dv; |
1490 | |
1491 | mlx_ccb_enqueue(mlx, mc); |
1492 | } |
1493 | } |
1494 | } |
1495 | |
1496 | static void |
1497 | mlx_pause_done(struct mlx_ccb *mc) |
1498 | { |
1499 | struct mlx_softc *mlx; |
1500 | int command, channel; |
1501 | |
1502 | mlx = device_private(mc->mc_mx.mx_dv); |
1503 | command = mc->mc_mbox[0]; |
1504 | channel = mc->mc_mbox[2] & 0xf; |
1505 | |
1506 | if (mc->mc_status != 0) |
1507 | aprint_error_dev(mlx->mlx_dv, "%s command failed - %s\n" , |
1508 | command == MLX_CMD_STOPCHANNEL ? "pause" : "resume" , |
1509 | mlx_ccb_diagnose(mc)); |
1510 | else if (command == MLX_CMD_STOPCHANNEL) |
1511 | printf("%s: channel %d pausing for %ld seconds\n" , |
1512 | device_xname(mlx->mlx_dv), channel, |
1513 | (long)(mlx->mlx_pause.mp_howlong - time_second)); |
1514 | else |
1515 | printf("%s: channel %d resuming\n" , device_xname(mlx->mlx_dv), |
1516 | channel); |
1517 | |
1518 | mlx_ccb_free(mlx, mc); |
1519 | } |
1520 | |
1521 | /* |
1522 | * Perform an Enquiry command using a type-3 command buffer and a return a |
1523 | * single linear result buffer. If the completion function is specified, it |
1524 | * will be called with the completed command (and the result response will |
1525 | * not be valid until that point). Otherwise, the command will either be |
1526 | * busy-waited for (interrupts must be blocked), or slept for. |
1527 | */ |
1528 | static void * |
1529 | mlx_enquire(struct mlx_softc *mlx, int command, size_t bufsize, |
1530 | void (*handler)(struct mlx_ccb *mc), int waitok) |
1531 | { |
1532 | struct mlx_ccb *mc; |
1533 | void *result; |
1534 | int rv, mapped; |
1535 | |
1536 | result = NULL; |
1537 | mapped = 0; |
1538 | |
1539 | if ((rv = mlx_ccb_alloc(mlx, &mc, 1)) != 0) |
1540 | goto out; |
1541 | |
1542 | result = malloc(bufsize, M_DEVBUF, waitok ? M_WAITOK : M_NOWAIT); |
1543 | if (result == NULL) { |
1544 | printf("mlx_enquire: malloc() failed\n" ); |
1545 | goto out; |
1546 | } |
1547 | if ((rv = mlx_ccb_map(mlx, mc, result, bufsize, MC_XFER_IN)) != 0) |
1548 | goto out; |
1549 | mapped = 1; |
1550 | if (mc->mc_nsgent != 1) { |
1551 | printf("mlx_enquire: too many segs\n" ); |
1552 | goto out; |
1553 | } |
1554 | |
1555 | /* Build an enquiry command. */ |
1556 | mlx_make_type2(mc, command, 0, 0, 0, 0, 0, 0, mc->mc_xfer_phys, 0); |
1557 | |
1558 | /* Do we want a completion callback? */ |
1559 | if (handler != NULL) { |
1560 | mc->mc_mx.mx_context = result; |
1561 | mc->mc_mx.mx_dv = mlx->mlx_dv; |
1562 | mc->mc_mx.mx_handler = handler; |
1563 | mlx_ccb_enqueue(mlx, mc); |
1564 | } else { |
1565 | /* Run the command in either polled or wait mode. */ |
1566 | if (waitok) |
1567 | rv = mlx_ccb_wait(mlx, mc); |
1568 | else |
1569 | rv = mlx_ccb_poll(mlx, mc, 5000); |
1570 | } |
1571 | |
1572 | out: |
1573 | /* We got a command, but nobody else will free it. */ |
1574 | if (handler == NULL && mc != NULL) { |
1575 | if (mapped) |
1576 | mlx_ccb_unmap(mlx, mc); |
1577 | mlx_ccb_free(mlx, mc); |
1578 | } |
1579 | |
1580 | /* We got an error, and we allocated a result. */ |
1581 | if (rv != 0 && result != NULL) { |
1582 | if (mc != NULL) |
1583 | mlx_ccb_free(mlx, mc); |
1584 | free(result, M_DEVBUF); |
1585 | result = NULL; |
1586 | } |
1587 | |
1588 | return (result); |
1589 | } |
1590 | |
1591 | /* |
1592 | * Perform a Flush command on the nominated controller. |
1593 | * |
1594 | * May be called with interrupts enabled or disabled; will not return until |
1595 | * the flush operation completes or fails. |
1596 | */ |
1597 | int |
1598 | mlx_flush(struct mlx_softc *mlx, int async) |
1599 | { |
1600 | struct mlx_ccb *mc; |
1601 | int rv; |
1602 | |
1603 | if ((rv = mlx_ccb_alloc(mlx, &mc, 1)) != 0) |
1604 | goto out; |
1605 | |
1606 | /* Build a flush command and fire it off. */ |
1607 | mlx_make_type2(mc, MLX_CMD_FLUSH, 0, 0, 0, 0, 0, 0, 0, 0); |
1608 | |
1609 | if (async) |
1610 | rv = mlx_ccb_wait(mlx, mc); |
1611 | else |
1612 | rv = mlx_ccb_poll(mlx, mc, MLX_TIMEOUT * 1000); |
1613 | if (rv != 0) |
1614 | goto out; |
1615 | |
1616 | /* Command completed OK? */ |
1617 | if (mc->mc_status != 0) { |
1618 | aprint_error_dev(mlx->mlx_dv, "FLUSH failed - %s\n" , |
1619 | mlx_ccb_diagnose(mc)); |
1620 | rv = EIO; |
1621 | } |
1622 | out: |
1623 | if (mc != NULL) |
1624 | mlx_ccb_free(mlx, mc); |
1625 | |
1626 | return (rv); |
1627 | } |
1628 | |
1629 | /* |
1630 | * Start a background consistency check on (drive). |
1631 | */ |
1632 | static int |
1633 | mlx_check(struct mlx_softc *mlx, int drive) |
1634 | { |
1635 | struct mlx_ccb *mc; |
1636 | int rv; |
1637 | |
1638 | /* Get ourselves a command buffer. */ |
1639 | rv = 0x10000; |
1640 | |
1641 | if (mlx_ccb_alloc(mlx, &mc, 1) != 0) |
1642 | goto out; |
1643 | |
1644 | /* Build a checkasync command, set the "fix it" flag. */ |
1645 | mlx_make_type2(mc, MLX_CMD_CHECKASYNC, 0, 0, 0, 0, 0, drive | 0x80, |
1646 | 0, 0); |
1647 | |
1648 | /* Start the command and wait for it to be returned. */ |
1649 | if (mlx_ccb_wait(mlx, mc) != 0) |
1650 | goto out; |
1651 | |
1652 | /* Command completed OK? */ |
1653 | if (mc->mc_status != 0) |
1654 | aprint_error_dev(mlx->mlx_dv, "CHECK ASYNC failed - %s\n" , |
1655 | mlx_ccb_diagnose(mc)); |
1656 | else |
1657 | printf("%s: consistency check started" , |
1658 | device_xname(mlx->mlx_sysdrive[drive].ms_dv)); |
1659 | |
1660 | rv = mc->mc_status; |
1661 | out: |
1662 | if (mc != NULL) |
1663 | mlx_ccb_free(mlx, mc); |
1664 | |
1665 | return (rv); |
1666 | } |
1667 | |
1668 | /* |
1669 | * Start a background rebuild of the physical drive at (channel),(target). |
1670 | * |
1671 | * May be called with interrupts enabled or disabled; will return as soon as |
1672 | * the operation has started or been refused. |
1673 | */ |
1674 | static int |
1675 | mlx_rebuild(struct mlx_softc *mlx, int channel, int target) |
1676 | { |
1677 | struct mlx_ccb *mc; |
1678 | int error; |
1679 | |
1680 | error = 0x10000; |
1681 | if (mlx_ccb_alloc(mlx, &mc, 1) != 0) |
1682 | goto out; |
1683 | |
1684 | /* Build a rebuildasync command, set the "fix it" flag. */ |
1685 | mlx_make_type2(mc, MLX_CMD_REBUILDASYNC, channel, target, 0, 0, 0, 0, |
1686 | 0, 0); |
1687 | |
1688 | /* Start the command and wait for it to be returned. */ |
1689 | if (mlx_ccb_wait(mlx, mc) != 0) |
1690 | goto out; |
1691 | |
1692 | /* Command completed OK? */ |
1693 | if (mc->mc_status != 0) |
1694 | aprint_normal_dev(mlx->mlx_dv, "REBUILD ASYNC failed - %s\n" , |
1695 | mlx_ccb_diagnose(mc)); |
1696 | else |
1697 | aprint_normal_dev(mlx->mlx_dv, "rebuild started for %d:%d\n" , |
1698 | channel, target); |
1699 | |
1700 | error = mc->mc_status; |
1701 | |
1702 | out: |
1703 | if (mc != NULL) |
1704 | mlx_ccb_free(mlx, mc); |
1705 | |
1706 | return (error); |
1707 | } |
1708 | |
1709 | /* |
1710 | * Take a command from user-space and try to run it. |
1711 | * |
1712 | * XXX Note that this can't perform very much in the way of error checking, |
1713 | * XXX and as such, applications _must_ be considered trustworthy. |
1714 | * |
1715 | * XXX Commands using S/G for data are not supported. |
1716 | */ |
1717 | static int |
1718 | mlx_user_command(struct mlx_softc *mlx, struct mlx_usercommand *mu) |
1719 | { |
1720 | struct mlx_ccb *mc; |
1721 | struct mlx_dcdb *dcdb; |
1722 | void *kbuf; |
1723 | int rv, mapped; |
1724 | |
1725 | if ((mu->mu_bufdir & ~MU_XFER_MASK) != 0) |
1726 | return (EINVAL); |
1727 | |
1728 | kbuf = NULL; |
1729 | dcdb = NULL; |
1730 | mapped = 0; |
1731 | |
1732 | /* Get ourselves a command and copy in from user space. */ |
1733 | if ((rv = mlx_ccb_alloc(mlx, &mc, 1)) != 0) { |
1734 | DPRINTF(("mlx_user_command: mlx_ccb_alloc = %d\n" , rv)); |
1735 | goto out; |
1736 | } |
1737 | |
1738 | memcpy(mc->mc_mbox, mu->mu_command, sizeof(mc->mc_mbox)); |
1739 | |
1740 | /* |
1741 | * If we need a buffer for data transfer, allocate one and copy in |
1742 | * its initial contents. |
1743 | */ |
1744 | if (mu->mu_datasize > 0) { |
1745 | if (mu->mu_datasize > MAXPHYS) |
1746 | return (EINVAL); |
1747 | |
1748 | kbuf = malloc(mu->mu_datasize, M_DEVBUF, M_WAITOK); |
1749 | if (kbuf == NULL) { |
1750 | DPRINTF(("mlx_user_command: malloc = NULL\n" )); |
1751 | rv = ENOMEM; |
1752 | goto out; |
1753 | } |
1754 | |
1755 | if ((mu->mu_bufdir & MU_XFER_OUT) != 0) { |
1756 | rv = copyin(mu->mu_buf, kbuf, mu->mu_datasize); |
1757 | if (rv != 0) { |
1758 | DPRINTF(("mlx_user_command: copyin = %d\n" , |
1759 | rv)); |
1760 | goto out; |
1761 | } |
1762 | } |
1763 | |
1764 | /* Map the buffer so the controller can see it. */ |
1765 | rv = mlx_ccb_map(mlx, mc, kbuf, mu->mu_datasize, mu->mu_bufdir); |
1766 | if (rv != 0) { |
1767 | DPRINTF(("mlx_user_command: mlx_ccb_map = %d\n" , rv)); |
1768 | goto out; |
1769 | } |
1770 | if (mc->mc_nsgent > 1) { |
1771 | DPRINTF(("mlx_user_command: too many s/g entries\n" )); |
1772 | rv = EFBIG; |
1773 | goto out; |
1774 | } |
1775 | mapped = 1; |
1776 | /* |
1777 | * If this is a passthrough SCSI command, the DCDB is packed at |
1778 | * the beginning of the data area. Fix up the DCDB to point to |
1779 | * the correct physical address and override any bufptr |
1780 | * supplied by the caller since we know what it's meant to be. |
1781 | */ |
1782 | if (mc->mc_mbox[0] == MLX_CMD_DIRECT_CDB) { |
1783 | dcdb = (struct mlx_dcdb *)kbuf; |
1784 | dcdb->dcdb_physaddr = mc->mc_xfer_phys + sizeof(*dcdb); |
1785 | mu->mu_bufptr = 8; |
1786 | } |
1787 | } |
1788 | |
1789 | |
1790 | /* |
1791 | * If there's a data buffer, fix up the command's buffer pointer. |
1792 | */ |
1793 | if (mu->mu_datasize > 0) { |
1794 | /* Range check the pointer to physical buffer address. */ |
1795 | if (mu->mu_bufptr < 0 || |
1796 | mu->mu_bufptr > sizeof(mu->mu_command) - 4) { |
1797 | DPRINTF(("mlx_user_command: bufptr botch\n" )); |
1798 | rv = EINVAL; |
1799 | goto out; |
1800 | } |
1801 | |
1802 | mc->mc_mbox[mu->mu_bufptr] = mc->mc_xfer_phys; |
1803 | mc->mc_mbox[mu->mu_bufptr+1] = mc->mc_xfer_phys >> 8; |
1804 | mc->mc_mbox[mu->mu_bufptr+2] = mc->mc_xfer_phys >> 16; |
1805 | mc->mc_mbox[mu->mu_bufptr+3] = mc->mc_xfer_phys >> 24; |
1806 | } |
1807 | |
1808 | /* Submit the command and wait. */ |
1809 | if ((rv = mlx_ccb_wait(mlx, mc)) != 0) { |
1810 | #ifdef DEBUG |
1811 | printf("mlx_user_command: mlx_ccb_wait = %d\n" , rv); |
1812 | #endif |
1813 | } |
1814 | |
1815 | out: |
1816 | if (mc != NULL) { |
1817 | /* Copy out status and data */ |
1818 | mu->mu_status = mc->mc_status; |
1819 | if (mapped) |
1820 | mlx_ccb_unmap(mlx, mc); |
1821 | mlx_ccb_free(mlx, mc); |
1822 | } |
1823 | |
1824 | if (kbuf != NULL) { |
1825 | if (mu->mu_datasize > 0 && (mu->mu_bufdir & MU_XFER_IN) != 0) { |
1826 | rv = copyout(kbuf, mu->mu_buf, mu->mu_datasize); |
1827 | #ifdef DIAGNOSTIC |
1828 | if (rv != 0) |
1829 | printf("mlx_user_command: copyout = %d\n" , rv); |
1830 | #endif |
1831 | } |
1832 | } |
1833 | if (kbuf != NULL) |
1834 | free(kbuf, M_DEVBUF); |
1835 | |
1836 | return (rv); |
1837 | } |
1838 | |
1839 | /* |
1840 | * Allocate and initialise a CCB. |
1841 | */ |
1842 | int |
1843 | mlx_ccb_alloc(struct mlx_softc *mlx, struct mlx_ccb **mcp, int control) |
1844 | { |
1845 | struct mlx_ccb *mc; |
1846 | int s; |
1847 | |
1848 | s = splbio(); |
1849 | mc = SLIST_FIRST(&mlx->mlx_ccb_freelist); |
1850 | if (control) { |
1851 | if (mlx->mlx_nccbs_ctrl >= MLX_NCCBS_CONTROL) { |
1852 | splx(s); |
1853 | *mcp = NULL; |
1854 | return (EAGAIN); |
1855 | } |
1856 | mc->mc_flags |= MC_CONTROL; |
1857 | mlx->mlx_nccbs_ctrl++; |
1858 | } |
1859 | SLIST_REMOVE_HEAD(&mlx->mlx_ccb_freelist, mc_chain.slist); |
1860 | splx(s); |
1861 | |
1862 | *mcp = mc; |
1863 | return (0); |
1864 | } |
1865 | |
1866 | /* |
1867 | * Free a CCB. |
1868 | */ |
1869 | void |
1870 | mlx_ccb_free(struct mlx_softc *mlx, struct mlx_ccb *mc) |
1871 | { |
1872 | int s; |
1873 | |
1874 | s = splbio(); |
1875 | if ((mc->mc_flags & MC_CONTROL) != 0) |
1876 | mlx->mlx_nccbs_ctrl--; |
1877 | mc->mc_flags = 0; |
1878 | SLIST_INSERT_HEAD(&mlx->mlx_ccb_freelist, mc, mc_chain.slist); |
1879 | splx(s); |
1880 | } |
1881 | |
1882 | /* |
1883 | * If a CCB is specified, enqueue it. Pull CCBs off the software queue in |
1884 | * the order that they were enqueued and try to submit their mailboxes to |
1885 | * the controller for execution. |
1886 | */ |
1887 | void |
1888 | mlx_ccb_enqueue(struct mlx_softc *mlx, struct mlx_ccb *mc) |
1889 | { |
1890 | int s; |
1891 | |
1892 | s = splbio(); |
1893 | |
1894 | if (mc != NULL) |
1895 | SIMPLEQ_INSERT_TAIL(&mlx->mlx_ccb_queue, mc, mc_chain.simpleq); |
1896 | |
1897 | while ((mc = SIMPLEQ_FIRST(&mlx->mlx_ccb_queue)) != NULL) { |
1898 | if (mlx_ccb_submit(mlx, mc) != 0) |
1899 | break; |
1900 | SIMPLEQ_REMOVE_HEAD(&mlx->mlx_ccb_queue, mc_chain.simpleq); |
1901 | TAILQ_INSERT_TAIL(&mlx->mlx_ccb_worklist, mc, mc_chain.tailq); |
1902 | } |
1903 | |
1904 | splx(s); |
1905 | } |
1906 | |
1907 | /* |
1908 | * Map the specified CCB's data buffer onto the bus, and fill the |
1909 | * scatter-gather list. |
1910 | */ |
1911 | int |
1912 | mlx_ccb_map(struct mlx_softc *mlx, struct mlx_ccb *mc, void *data, int size, |
1913 | int dir) |
1914 | { |
1915 | struct mlx_sgentry *sge; |
1916 | int nsegs, i, rv, sgloff; |
1917 | bus_dmamap_t xfer; |
1918 | |
1919 | xfer = mc->mc_xfer_map; |
1920 | |
1921 | rv = bus_dmamap_load(mlx->mlx_dmat, xfer, data, size, NULL, |
1922 | BUS_DMA_NOWAIT | BUS_DMA_STREAMING | |
1923 | ((dir & MC_XFER_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); |
1924 | if (rv != 0) |
1925 | return (rv); |
1926 | |
1927 | nsegs = xfer->dm_nsegs; |
1928 | mc->mc_xfer_size = size; |
1929 | mc->mc_flags |= dir; |
1930 | mc->mc_nsgent = nsegs; |
1931 | mc->mc_xfer_phys = xfer->dm_segs[0].ds_addr; |
1932 | |
1933 | sgloff = MLX_SGL_SIZE * mc->mc_ident; |
1934 | sge = (struct mlx_sgentry *)((char *)mlx->mlx_sgls + sgloff); |
1935 | |
1936 | for (i = 0; i < nsegs; i++, sge++) { |
1937 | sge->sge_addr = htole32(xfer->dm_segs[i].ds_addr); |
1938 | sge->sge_count = htole32(xfer->dm_segs[i].ds_len); |
1939 | } |
1940 | |
1941 | if ((dir & MC_XFER_OUT) != 0) |
1942 | i = BUS_DMASYNC_PREWRITE; |
1943 | else |
1944 | i = 0; |
1945 | if ((dir & MC_XFER_IN) != 0) |
1946 | i |= BUS_DMASYNC_PREREAD; |
1947 | |
1948 | bus_dmamap_sync(mlx->mlx_dmat, xfer, 0, mc->mc_xfer_size, i); |
1949 | bus_dmamap_sync(mlx->mlx_dmat, mlx->mlx_dmamap, sgloff, |
1950 | MLX_SGL_SIZE, BUS_DMASYNC_PREWRITE); |
1951 | |
1952 | return (0); |
1953 | } |
1954 | |
1955 | /* |
1956 | * Unmap the specified CCB's data buffer. |
1957 | */ |
1958 | void |
1959 | mlx_ccb_unmap(struct mlx_softc *mlx, struct mlx_ccb *mc) |
1960 | { |
1961 | int i; |
1962 | |
1963 | bus_dmamap_sync(mlx->mlx_dmat, mlx->mlx_dmamap, |
1964 | MLX_SGL_SIZE * mc->mc_ident, MLX_SGL_SIZE, |
1965 | BUS_DMASYNC_POSTWRITE); |
1966 | |
1967 | if ((mc->mc_flags & MC_XFER_OUT) != 0) |
1968 | i = BUS_DMASYNC_POSTWRITE; |
1969 | else |
1970 | i = 0; |
1971 | if ((mc->mc_flags & MC_XFER_IN) != 0) |
1972 | i |= BUS_DMASYNC_POSTREAD; |
1973 | |
1974 | bus_dmamap_sync(mlx->mlx_dmat, mc->mc_xfer_map, 0, mc->mc_xfer_size, i); |
1975 | bus_dmamap_unload(mlx->mlx_dmat, mc->mc_xfer_map); |
1976 | } |
1977 | |
1978 | /* |
1979 | * Submit the CCB, and busy-wait for it to complete. Return non-zero on |
1980 | * timeout or submission error. Must be called with interrupts blocked. |
1981 | */ |
1982 | int |
1983 | mlx_ccb_poll(struct mlx_softc *mlx, struct mlx_ccb *mc, int timo) |
1984 | { |
1985 | int rv; |
1986 | |
1987 | mc->mc_mx.mx_handler = NULL; |
1988 | |
1989 | if ((rv = mlx_ccb_submit(mlx, mc)) != 0) |
1990 | return (rv); |
1991 | TAILQ_INSERT_TAIL(&mlx->mlx_ccb_worklist, mc, mc_chain.tailq); |
1992 | |
1993 | for (timo *= 10; timo != 0; timo--) { |
1994 | mlx_intr(mlx); |
1995 | if (mc->mc_status != MLX_STATUS_BUSY) |
1996 | break; |
1997 | DELAY(100); |
1998 | } |
1999 | |
2000 | if (timo != 0) { |
2001 | if (mc->mc_status != 0) { |
2002 | aprint_error_dev(mlx->mlx_dv, "command failed - %s\n" , |
2003 | mlx_ccb_diagnose(mc)); |
2004 | rv = EIO; |
2005 | } else |
2006 | rv = 0; |
2007 | } else { |
2008 | printf("%s: command timed out\n" , device_xname(mlx->mlx_dv)); |
2009 | rv = EIO; |
2010 | } |
2011 | |
2012 | return (rv); |
2013 | } |
2014 | |
2015 | /* |
2016 | * Enqueue the CCB, and sleep until it completes. Return non-zero on |
2017 | * timeout or error. |
2018 | */ |
2019 | int |
2020 | mlx_ccb_wait(struct mlx_softc *mlx, struct mlx_ccb *mc) |
2021 | { |
2022 | int s; |
2023 | |
2024 | mc->mc_flags |= MC_WAITING; |
2025 | mc->mc_mx.mx_handler = NULL; |
2026 | |
2027 | s = splbio(); |
2028 | mlx_ccb_enqueue(mlx, mc); |
2029 | tsleep(mc, PRIBIO, "mlxwccb" , 0); |
2030 | splx(s); |
2031 | |
2032 | if (mc->mc_status != 0) { |
2033 | aprint_error_dev(mlx->mlx_dv, "command failed - %s\n" , |
2034 | mlx_ccb_diagnose(mc)); |
2035 | return (EIO); |
2036 | } |
2037 | |
2038 | return (0); |
2039 | } |
2040 | |
2041 | /* |
2042 | * Try to submit a CCB's mailbox to the controller for execution. Return |
2043 | * non-zero on timeout or error. Must be called with interrupts blocked. |
2044 | */ |
2045 | static int |
2046 | mlx_ccb_submit(struct mlx_softc *mlx, struct mlx_ccb *mc) |
2047 | { |
2048 | int i, s, r; |
2049 | |
2050 | /* Save the ident so we can handle this command when complete. */ |
2051 | mc->mc_mbox[1] = (u_int8_t)(mc->mc_ident + 1); |
2052 | |
2053 | /* Mark the command as currently being processed. */ |
2054 | mc->mc_status = MLX_STATUS_BUSY; |
2055 | mc->mc_expiry = time_second + MLX_TIMEOUT; |
2056 | |
2057 | /* Spin waiting for the mailbox. */ |
2058 | for (i = 100; i != 0; i--) { |
2059 | s = splbio(); |
2060 | r = (*mlx->mlx_submit)(mlx, mc); |
2061 | splx(s); |
2062 | if (r != 0) |
2063 | break; |
2064 | DELAY(100); |
2065 | } |
2066 | if (i != 0) |
2067 | return (0); |
2068 | |
2069 | DPRINTF(("mlx_ccb_submit: rejected; queueing\n" )); |
2070 | mc->mc_status = MLX_STATUS_WEDGED; |
2071 | return (EIO); |
2072 | } |
2073 | |
2074 | /* |
2075 | * Return a string that describes why a command has failed. |
2076 | */ |
2077 | const char * |
2078 | mlx_ccb_diagnose(struct mlx_ccb *mc) |
2079 | { |
2080 | static char tbuf[80]; |
2081 | int i; |
2082 | |
2083 | for (i = 0; i < sizeof(mlx_msgs) / sizeof(mlx_msgs[0]); i++) |
2084 | if ((mc->mc_mbox[0] == mlx_msgs[i].command || |
2085 | mlx_msgs[i].command == 0) && |
2086 | mc->mc_status == mlx_msgs[i].status) { |
2087 | snprintf(tbuf, sizeof(tbuf), "%s (0x%x)" , |
2088 | mlx_status_msgs[mlx_msgs[i].msg], mc->mc_status); |
2089 | return (tbuf); |
2090 | } |
2091 | |
2092 | snprintf(tbuf, sizeof(tbuf), "unknown response 0x%x for command 0x%x" , |
2093 | (int)mc->mc_status, (int)mc->mc_mbox[0]); |
2094 | |
2095 | return (tbuf); |
2096 | } |
2097 | |
2098 | /* |
2099 | * Poll the controller for completed commands. Returns non-zero if one or |
2100 | * more commands were completed. Must be called with interrupts blocked. |
2101 | */ |
2102 | int |
2103 | mlx_intr(void *cookie) |
2104 | { |
2105 | struct mlx_softc *mlx; |
2106 | struct mlx_ccb *mc; |
2107 | int result; |
2108 | u_int ident, status; |
2109 | |
2110 | mlx = cookie; |
2111 | result = 0; |
2112 | |
2113 | while ((*mlx->mlx_findcomplete)(mlx, &ident, &status) != 0) { |
2114 | result = 1; |
2115 | ident--; |
2116 | |
2117 | if (ident >= MLX_MAX_QUEUECNT) { |
2118 | aprint_error_dev(mlx->mlx_dv, |
2119 | "bad completion returned\n" ); |
2120 | continue; |
2121 | } |
2122 | |
2123 | mc = mlx->mlx_ccbs + ident; |
2124 | |
2125 | if (mc->mc_status != MLX_STATUS_BUSY) { |
2126 | aprint_error_dev(mlx->mlx_dv, |
2127 | "bad completion returned\n" ); |
2128 | continue; |
2129 | } |
2130 | |
2131 | TAILQ_REMOVE(&mlx->mlx_ccb_worklist, mc, mc_chain.tailq); |
2132 | |
2133 | /* Record status and notify the initiator, if requested. */ |
2134 | mc->mc_status = status; |
2135 | if (mc->mc_mx.mx_handler != NULL) |
2136 | (*mc->mc_mx.mx_handler)(mc); |
2137 | else if ((mc->mc_flags & MC_WAITING) != 0) |
2138 | wakeup(mc); |
2139 | } |
2140 | |
2141 | /* If we've completed any commands, try posting some more. */ |
2142 | if (result) |
2143 | mlx_ccb_enqueue(mlx, NULL); |
2144 | |
2145 | return (result); |
2146 | } |
2147 | |
2148 | /* |
2149 | * Emit a string describing the firmware handshake status code, and return a |
2150 | * flag indicating whether the code represents a fatal error. |
2151 | * |
2152 | * Error code interpretations are from the Linux driver, and don't directly |
2153 | * match the messages printed by Mylex's BIOS. This may change if |
2154 | * documentation on the codes is forthcoming. |
2155 | */ |
2156 | static int |
2157 | mlx_fw_message(struct mlx_softc *mlx, int error, int param1, int param2) |
2158 | { |
2159 | const char *fmt; |
2160 | |
2161 | switch (error) { |
2162 | case 0x00: |
2163 | fmt = "physical drive %d:%d not responding" ; |
2164 | break; |
2165 | |
2166 | case 0x08: |
2167 | /* |
2168 | * We could be neater about this and give some indication |
2169 | * when we receive more of them. |
2170 | */ |
2171 | if ((mlx->mlx_flags & MLXF_SPINUP_REPORTED) == 0) { |
2172 | printf("%s: spinning up drives...\n" , |
2173 | device_xname(mlx->mlx_dv)); |
2174 | mlx->mlx_flags |= MLXF_SPINUP_REPORTED; |
2175 | } |
2176 | return (0); |
2177 | |
2178 | case 0x30: |
2179 | fmt = "configuration checksum error" ; |
2180 | break; |
2181 | |
2182 | case 0x60: |
2183 | fmt = "mirror race recovery failed" ; |
2184 | break; |
2185 | |
2186 | case 0x70: |
2187 | fmt = "mirror race recovery in progress" ; |
2188 | break; |
2189 | |
2190 | case 0x90: |
2191 | fmt = "physical drive %d:%d COD mismatch" ; |
2192 | break; |
2193 | |
2194 | case 0xa0: |
2195 | fmt = "logical drive installation aborted" ; |
2196 | break; |
2197 | |
2198 | case 0xb0: |
2199 | fmt = "mirror race on a critical system drive" ; |
2200 | break; |
2201 | |
2202 | case 0xd0: |
2203 | fmt = "new controller configuration found" ; |
2204 | break; |
2205 | |
2206 | case 0xf0: |
2207 | aprint_error_dev(mlx->mlx_dv, "FATAL MEMORY PARITY ERROR\n" ); |
2208 | return (1); |
2209 | |
2210 | default: |
2211 | aprint_error_dev(mlx->mlx_dv, |
2212 | "unknown firmware init error %02x:%02x:%02x\n" , |
2213 | error, param1, param2); |
2214 | return (0); |
2215 | } |
2216 | |
2217 | aprint_normal_dev(mlx->mlx_dv, fmt, param2, param1); |
2218 | aprint_normal("\n" ); |
2219 | |
2220 | return (0); |
2221 | } |
2222 | |
2223 | MODULE(MODULE_CLASS_DRIVER, mlx, NULL); |
2224 | |
2225 | #ifdef _MODULE |
2226 | CFDRIVER_DECL(cac, DV_DISK, NULL); |
2227 | #endif |
2228 | |
2229 | static int |
2230 | mlx_modcmd(modcmd_t cmd, void *opaque) |
2231 | { |
2232 | int error = 0; |
2233 | |
2234 | #ifdef _MODULE |
2235 | switch (cmd) { |
2236 | case MODULE_CMD_INIT: |
2237 | error = config_cfdriver_attach(&mlx_cd); |
2238 | break; |
2239 | case MODULE_CMD_FINI: |
2240 | error = config_cfdriver_detach(&mlx_cd); |
2241 | break; |
2242 | default: |
2243 | error = ENOTTY; |
2244 | break; |
2245 | } |
2246 | #endif |
2247 | return error; |
2248 | } |
2249 | |