1 | /* $NetBSD: adv.c,v 1.47 2016/07/14 04:19:26 msaitoh Exp $ */ |
2 | |
3 | /* |
4 | * Generic driver for the Advanced Systems Inc. Narrow SCSI controllers |
5 | * |
6 | * Copyright (c) 1998 The NetBSD Foundation, Inc. |
7 | * All rights reserved. |
8 | * |
9 | * Author: Baldassare Dante Profeta <dante@mclink.it> |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions and the following disclaimer. |
16 | * 2. Redistributions in binary form must reproduce the above copyright |
17 | * notice, this list of conditions and the following disclaimer in the |
18 | * documentation and/or other materials provided with the distribution. |
19 | * 3. All advertising materials mentioning features or use of this software |
20 | * must display the following acknowledgement: |
21 | * This product includes software developed by the NetBSD |
22 | * Foundation, Inc. and its contributors. |
23 | * 4. Neither the name of The NetBSD Foundation nor the names of its |
24 | * contributors may be used to endorse or promote products derived |
25 | * from this software without specific prior written permission. |
26 | * |
27 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
28 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
29 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
30 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
31 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
32 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
33 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
34 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
35 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
36 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
37 | * POSSIBILITY OF SUCH DAMAGE. |
38 | */ |
39 | |
40 | #include <sys/cdefs.h> |
41 | __KERNEL_RCSID(0, "$NetBSD: adv.c,v 1.47 2016/07/14 04:19:26 msaitoh Exp $" ); |
42 | |
43 | #include <sys/param.h> |
44 | #include <sys/systm.h> |
45 | #include <sys/callout.h> |
46 | #include <sys/kernel.h> |
47 | #include <sys/errno.h> |
48 | #include <sys/ioctl.h> |
49 | #include <sys/device.h> |
50 | #include <sys/malloc.h> |
51 | #include <sys/buf.h> |
52 | #include <sys/proc.h> |
53 | |
54 | #include <sys/bus.h> |
55 | #include <sys/intr.h> |
56 | |
57 | #include <dev/scsipi/scsi_all.h> |
58 | #include <dev/scsipi/scsipi_all.h> |
59 | #include <dev/scsipi/scsiconf.h> |
60 | |
61 | #include <dev/ic/advlib.h> |
62 | #include <dev/ic/adv.h> |
63 | |
64 | #ifndef DDB |
65 | #define Debugger() panic("should call debugger here (adv.c)") |
66 | #endif /* ! DDB */ |
67 | |
68 | |
69 | /* #define ASC_DEBUG */ |
70 | |
71 | /******************************************************************************/ |
72 | |
73 | |
74 | static int adv_alloc_control_data(ASC_SOFTC *); |
75 | static void adv_free_control_data(ASC_SOFTC *); |
76 | static int adv_create_ccbs(ASC_SOFTC *, ADV_CCB *, int); |
77 | static void adv_free_ccb(ASC_SOFTC *, ADV_CCB *); |
78 | static void adv_reset_ccb(ADV_CCB *); |
79 | static int adv_init_ccb(ASC_SOFTC *, ADV_CCB *); |
80 | static ADV_CCB *adv_get_ccb(ASC_SOFTC *); |
81 | static void adv_queue_ccb(ASC_SOFTC *, ADV_CCB *); |
82 | static void adv_start_ccbs(ASC_SOFTC *); |
83 | |
84 | |
85 | static void adv_scsipi_request(struct scsipi_channel *, |
86 | scsipi_adapter_req_t, void *); |
87 | static void advminphys(struct buf *); |
88 | static void adv_narrow_isr_callback(ASC_SOFTC *, ASC_QDONE_INFO *); |
89 | |
90 | static int adv_poll(ASC_SOFTC *, struct scsipi_xfer *, int); |
91 | static void adv_timeout(void *); |
92 | static void adv_watchdog(void *); |
93 | |
94 | |
95 | /******************************************************************************/ |
96 | |
97 | #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ |
98 | #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */ |
99 | |
100 | /******************************************************************************/ |
101 | /* Control Blocks routines */ |
102 | /******************************************************************************/ |
103 | |
104 | |
105 | static int |
106 | adv_alloc_control_data(ASC_SOFTC *sc) |
107 | { |
108 | int error; |
109 | |
110 | /* |
111 | * Allocate the control blocks. |
112 | */ |
113 | if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control), |
114 | PAGE_SIZE, 0, &sc->sc_control_seg, 1, |
115 | &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) { |
116 | aprint_error_dev(sc->sc_dev, "unable to allocate control " |
117 | "structures, error = %d\n" , error); |
118 | return (error); |
119 | } |
120 | if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg, |
121 | sc->sc_control_nsegs, sizeof(struct adv_control), |
122 | (void **) & sc->sc_control, |
123 | BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { |
124 | aprint_error_dev(sc->sc_dev, |
125 | "unable to map control structures, error = %d\n" , error); |
126 | return (error); |
127 | } |
128 | /* |
129 | * Create and load the DMA map used for the control blocks. |
130 | */ |
131 | if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control), |
132 | 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT, |
133 | &sc->sc_dmamap_control)) != 0) { |
134 | aprint_error_dev(sc->sc_dev, |
135 | "unable to create control DMA map, error = %d\n" , error); |
136 | return (error); |
137 | } |
138 | if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, |
139 | sc->sc_control, sizeof(struct adv_control), NULL, |
140 | BUS_DMA_NOWAIT)) != 0) { |
141 | aprint_error_dev(sc->sc_dev, |
142 | "unable to load control DMA map, error = %d\n" , error); |
143 | return (error); |
144 | } |
145 | |
146 | /* |
147 | * Initialize the overrun_buf address. |
148 | */ |
149 | sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr + |
150 | offsetof(struct adv_control, overrun_buf); |
151 | |
152 | return (0); |
153 | } |
154 | |
155 | static void |
156 | adv_free_control_data(ASC_SOFTC *sc) |
157 | { |
158 | |
159 | bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control); |
160 | bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control); |
161 | sc->sc_dmamap_control = NULL; |
162 | |
163 | bus_dmamem_unmap(sc->sc_dmat, (void *) sc->sc_control, |
164 | sizeof(struct adv_control)); |
165 | bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg, |
166 | sc->sc_control_nsegs); |
167 | } |
168 | |
169 | /* |
170 | * Create a set of ccbs and add them to the free list. Called once |
171 | * by adv_init(). We return the number of CCBs successfully created. |
172 | */ |
173 | static int |
174 | adv_create_ccbs(ASC_SOFTC *sc, ADV_CCB *ccbstore, int count) |
175 | { |
176 | ADV_CCB *ccb; |
177 | int i, error; |
178 | |
179 | memset(ccbstore, 0, sizeof(ADV_CCB) * count); |
180 | for (i = 0; i < count; i++) { |
181 | ccb = &ccbstore[i]; |
182 | if ((error = adv_init_ccb(sc, ccb)) != 0) { |
183 | aprint_error_dev(sc->sc_dev, |
184 | "unable to initialize ccb, error = %d\n" , error); |
185 | return (i); |
186 | } |
187 | TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); |
188 | } |
189 | |
190 | return (i); |
191 | } |
192 | |
193 | |
194 | /* |
195 | * A ccb is put onto the free list. |
196 | */ |
197 | static void |
198 | adv_free_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) |
199 | { |
200 | int s; |
201 | |
202 | s = splbio(); |
203 | adv_reset_ccb(ccb); |
204 | TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); |
205 | splx(s); |
206 | } |
207 | |
208 | |
209 | static void |
210 | adv_reset_ccb(ADV_CCB *ccb) |
211 | { |
212 | |
213 | ccb->flags = 0; |
214 | } |
215 | |
216 | |
217 | static int |
218 | adv_init_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) |
219 | { |
220 | int hashnum, error; |
221 | |
222 | callout_init(&ccb->ccb_watchdog, 0); |
223 | |
224 | /* |
225 | * Create the DMA map for this CCB. |
226 | */ |
227 | error = bus_dmamap_create(sc->sc_dmat, |
228 | (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, |
229 | ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE, |
230 | 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); |
231 | if (error) { |
232 | aprint_error_dev(sc->sc_dev, |
233 | "unable to create DMA map, error = %d\n" , error); |
234 | return (error); |
235 | } |
236 | |
237 | /* |
238 | * put in the phystokv hash table |
239 | * Never gets taken out. |
240 | */ |
241 | ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + |
242 | ADV_CCB_OFF(ccb); |
243 | hashnum = CCB_HASH(ccb->hashkey); |
244 | ccb->nexthash = sc->sc_ccbhash[hashnum]; |
245 | sc->sc_ccbhash[hashnum] = ccb; |
246 | |
247 | adv_reset_ccb(ccb); |
248 | return (0); |
249 | } |
250 | |
251 | |
252 | /* |
253 | * Get a free ccb |
254 | * |
255 | * If there are none, see if we can allocate a new one |
256 | */ |
257 | static ADV_CCB * |
258 | adv_get_ccb(ASC_SOFTC *sc) |
259 | { |
260 | ADV_CCB *ccb = 0; |
261 | int s; |
262 | |
263 | s = splbio(); |
264 | ccb = TAILQ_FIRST(&sc->sc_free_ccb); |
265 | if (ccb != NULL) { |
266 | TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); |
267 | ccb->flags |= CCB_ALLOC; |
268 | } |
269 | splx(s); |
270 | return (ccb); |
271 | } |
272 | |
273 | |
274 | /* |
275 | * Given a physical address, find the ccb that it corresponds to. |
276 | */ |
277 | ADV_CCB * |
278 | adv_ccb_phys_kv(ASC_SOFTC *sc, u_long ccb_phys) |
279 | { |
280 | int hashnum = CCB_HASH(ccb_phys); |
281 | ADV_CCB *ccb = sc->sc_ccbhash[hashnum]; |
282 | |
283 | while (ccb) { |
284 | if (ccb->hashkey == ccb_phys) |
285 | break; |
286 | ccb = ccb->nexthash; |
287 | } |
288 | return (ccb); |
289 | } |
290 | |
291 | |
292 | /* |
293 | * Queue a CCB to be sent to the controller, and send it if possible. |
294 | */ |
295 | static void |
296 | adv_queue_ccb(ASC_SOFTC *sc, ADV_CCB *ccb) |
297 | { |
298 | |
299 | TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); |
300 | |
301 | adv_start_ccbs(sc); |
302 | } |
303 | |
304 | |
305 | static void |
306 | adv_start_ccbs(ASC_SOFTC *sc) |
307 | { |
308 | ADV_CCB *ccb; |
309 | |
310 | while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { |
311 | if (ccb->flags & CCB_WATCHDOG) |
312 | callout_stop(&ccb->ccb_watchdog); |
313 | |
314 | if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) { |
315 | ccb->flags |= CCB_WATCHDOG; |
316 | callout_reset(&ccb->ccb_watchdog, |
317 | (ADV_WATCH_TIMEOUT * hz) / 1000, |
318 | adv_watchdog, ccb); |
319 | break; |
320 | } |
321 | TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); |
322 | |
323 | if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) |
324 | callout_reset(&ccb->xs->xs_callout, |
325 | mstohz(ccb->timeout), adv_timeout, ccb); |
326 | } |
327 | } |
328 | |
329 | |
330 | /******************************************************************************/ |
331 | /* SCSI layer interfacing routines */ |
332 | /******************************************************************************/ |
333 | |
334 | |
335 | int |
336 | adv_init(ASC_SOFTC *sc) |
337 | { |
338 | int warn; |
339 | |
340 | if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) { |
341 | aprint_error("adv_init: failed to find signature\n" ); |
342 | return (1); |
343 | } |
344 | |
345 | /* |
346 | * Read the board configuration |
347 | */ |
348 | AscInitASC_SOFTC(sc); |
349 | warn = AscInitFromEEP(sc); |
350 | if (warn) { |
351 | aprint_error_dev(sc->sc_dev, "-get: " ); |
352 | switch (warn) { |
353 | case -1: |
354 | aprint_normal("Chip is not halted\n" ); |
355 | break; |
356 | |
357 | case -2: |
358 | aprint_normal("Couldn't get MicroCode Start" |
359 | " address\n" ); |
360 | break; |
361 | |
362 | case ASC_WARN_IO_PORT_ROTATE: |
363 | aprint_normal("I/O port address modified\n" ); |
364 | break; |
365 | |
366 | case ASC_WARN_AUTO_CONFIG: |
367 | aprint_normal("I/O port increment switch enabled\n" ); |
368 | break; |
369 | |
370 | case ASC_WARN_EEPROM_CHKSUM: |
371 | aprint_normal("EEPROM checksum error\n" ); |
372 | break; |
373 | |
374 | case ASC_WARN_IRQ_MODIFIED: |
375 | aprint_normal("IRQ modified\n" ); |
376 | break; |
377 | |
378 | case ASC_WARN_CMD_QNG_CONFLICT: |
379 | aprint_normal("tag queuing enabled w/o disconnects\n" ); |
380 | break; |
381 | |
382 | default: |
383 | aprint_normal("unknown warning %d\n" , warn); |
384 | } |
385 | } |
386 | if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT) |
387 | sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT; |
388 | |
389 | /* |
390 | * Modify the board configuration |
391 | */ |
392 | warn = AscInitFromASC_SOFTC(sc); |
393 | if (warn) { |
394 | aprint_error_dev(sc->sc_dev, "-set: " ); |
395 | switch (warn) { |
396 | case ASC_WARN_CMD_QNG_CONFLICT: |
397 | aprint_normal("tag queuing enabled w/o disconnects\n" ); |
398 | break; |
399 | |
400 | case ASC_WARN_AUTO_CONFIG: |
401 | aprint_normal("I/O port increment switch enabled\n" ); |
402 | break; |
403 | |
404 | default: |
405 | aprint_normal("unknown warning %d\n" , warn); |
406 | } |
407 | } |
408 | sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback; |
409 | |
410 | return (0); |
411 | } |
412 | |
413 | |
414 | void |
415 | adv_attach(ASC_SOFTC *sc) |
416 | { |
417 | struct scsipi_adapter *adapt = &sc->sc_adapter; |
418 | struct scsipi_channel *chan = &sc->sc_channel; |
419 | int i, error; |
420 | |
421 | /* |
422 | * Initialize board RISC chip and enable interrupts. |
423 | */ |
424 | switch (AscInitDriver(sc)) { |
425 | case 0: |
426 | /* AllOK */ |
427 | break; |
428 | |
429 | case 1: |
430 | panic("%s: bad signature" , device_xname(sc->sc_dev)); |
431 | break; |
432 | |
433 | case 2: |
434 | panic("%s: unable to load MicroCode" , |
435 | device_xname(sc->sc_dev)); |
436 | break; |
437 | |
438 | case 3: |
439 | panic("%s: unable to initialize MicroCode" , |
440 | device_xname(sc->sc_dev)); |
441 | break; |
442 | |
443 | default: |
444 | panic("%s: unable to initialize board RISC chip" , |
445 | device_xname(sc->sc_dev)); |
446 | } |
447 | |
448 | /* |
449 | * Fill in the scsipi_adapter. |
450 | */ |
451 | memset(adapt, 0, sizeof(*adapt)); |
452 | adapt->adapt_dev = sc->sc_dev; |
453 | adapt->adapt_nchannels = 1; |
454 | /* adapt_openings initialized below */ |
455 | /* adapt_max_periph initialized below */ |
456 | adapt->adapt_request = adv_scsipi_request; |
457 | adapt->adapt_minphys = advminphys; |
458 | |
459 | /* |
460 | * Fill in the scsipi_channel. |
461 | */ |
462 | memset(chan, 0, sizeof(*chan)); |
463 | chan->chan_adapter = adapt; |
464 | chan->chan_bustype = &scsi_bustype; |
465 | chan->chan_channel = 0; |
466 | chan->chan_ntargets = 8; |
467 | chan->chan_nluns = 8; |
468 | chan->chan_id = sc->chip_scsi_id; |
469 | |
470 | TAILQ_INIT(&sc->sc_free_ccb); |
471 | TAILQ_INIT(&sc->sc_waiting_ccb); |
472 | |
473 | /* |
474 | * Allocate the Control Blocks and the overrun buffer. |
475 | */ |
476 | error = adv_alloc_control_data(sc); |
477 | if (error) |
478 | return; /* (error) */ |
479 | |
480 | /* |
481 | * Create and initialize the Control Blocks. |
482 | */ |
483 | i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB); |
484 | if (i == 0) { |
485 | aprint_error_dev(sc->sc_dev, |
486 | "unable to create control blocks\n" ); |
487 | return; /* (ENOMEM) */ ; |
488 | } else if (i != ADV_MAX_CCB) { |
489 | aprint_error_dev(sc->sc_dev, |
490 | "WARNING: only %d of %d control blocks created\n" , |
491 | i, ADV_MAX_CCB); |
492 | } |
493 | |
494 | adapt->adapt_openings = i; |
495 | adapt->adapt_max_periph = adapt->adapt_openings; |
496 | |
497 | sc->sc_child = config_found(sc->sc_dev, chan, scsiprint); |
498 | } |
499 | |
500 | int |
501 | adv_detach(ASC_SOFTC *sc, int flags) |
502 | { |
503 | int rv = 0; |
504 | |
505 | if (sc->sc_child != NULL) |
506 | rv = config_detach(sc->sc_child, flags); |
507 | |
508 | adv_free_control_data(sc); |
509 | |
510 | return (rv); |
511 | } |
512 | |
513 | static void |
514 | advminphys(struct buf *bp) |
515 | { |
516 | |
517 | if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE)) |
518 | bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE); |
519 | minphys(bp); |
520 | } |
521 | |
522 | |
523 | /* |
524 | * start a scsi operation given the command and the data address. Also needs |
525 | * the unit, target and lu. |
526 | */ |
527 | |
528 | static void |
529 | adv_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, |
530 | void *arg) |
531 | { |
532 | struct scsipi_xfer *xs; |
533 | struct scsipi_periph *periph; |
534 | ASC_SOFTC *sc = device_private(chan->chan_adapter->adapt_dev); |
535 | bus_dma_tag_t dmat = sc->sc_dmat; |
536 | ADV_CCB *ccb; |
537 | int s, flags, error, nsegs; |
538 | |
539 | switch (req) { |
540 | case ADAPTER_REQ_RUN_XFER: |
541 | xs = arg; |
542 | periph = xs->xs_periph; |
543 | flags = xs->xs_control; |
544 | |
545 | /* |
546 | * Get a CCB to use. |
547 | */ |
548 | ccb = adv_get_ccb(sc); |
549 | #ifdef DIAGNOSTIC |
550 | /* |
551 | * This should never happen as we track the resources |
552 | * in the mid-layer. |
553 | */ |
554 | if (ccb == NULL) { |
555 | scsipi_printaddr(periph); |
556 | printf("unable to allocate ccb\n" ); |
557 | panic("adv_scsipi_request" ); |
558 | } |
559 | #endif |
560 | |
561 | ccb->xs = xs; |
562 | ccb->timeout = xs->timeout; |
563 | |
564 | /* |
565 | * Build up the request |
566 | */ |
567 | memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q)); |
568 | |
569 | ccb->scsiq.q2.ccb_ptr = |
570 | sc->sc_dmamap_control->dm_segs[0].ds_addr + |
571 | ADV_CCB_OFF(ccb); |
572 | |
573 | ccb->scsiq.cdbptr = &xs->cmd->opcode; |
574 | ccb->scsiq.q2.cdb_len = xs->cmdlen; |
575 | ccb->scsiq.q1.target_id = |
576 | ASC_TID_TO_TARGET_ID(periph->periph_target); |
577 | ccb->scsiq.q1.target_lun = periph->periph_lun; |
578 | ccb->scsiq.q2.target_ix = |
579 | ASC_TIDLUN_TO_IX(periph->periph_target, |
580 | periph->periph_lun); |
581 | ccb->scsiq.q1.sense_addr = |
582 | sc->sc_dmamap_control->dm_segs[0].ds_addr + |
583 | ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense); |
584 | ccb->scsiq.q1.sense_len = sizeof(struct scsi_sense_data); |
585 | |
586 | /* |
587 | * If there are any outstanding requests for the current |
588 | * target, then every 255th request send an ORDERED request. |
589 | * This heuristic tries to retain the benefit of request |
590 | * sorting while preventing request starvation. 255 is the |
591 | * max number of tags or pending commands a device may have |
592 | * outstanding. |
593 | */ |
594 | sc->reqcnt[periph->periph_target]++; |
595 | if (((sc->reqcnt[periph->periph_target] > 0) && |
596 | (sc->reqcnt[periph->periph_target] % 255) == 0) || |
597 | xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) { |
598 | ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED; |
599 | } else { |
600 | ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE; |
601 | } |
602 | |
603 | if (xs->datalen) { |
604 | /* |
605 | * Map the DMA transfer. |
606 | */ |
607 | #ifdef TFS |
608 | if (flags & SCSI_DATA_UIO) { |
609 | error = bus_dmamap_load_uio(dmat, |
610 | ccb->dmamap_xfer, (struct uio *) xs->data, |
611 | ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : |
612 | BUS_DMA_WAITOK) | BUS_DMA_STREAMING | |
613 | ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : |
614 | BUS_DMA_WRITE)); |
615 | } else |
616 | #endif /* TFS */ |
617 | { |
618 | error = bus_dmamap_load(dmat, ccb->dmamap_xfer, |
619 | xs->data, xs->datalen, NULL, |
620 | ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : |
621 | BUS_DMA_WAITOK) | BUS_DMA_STREAMING | |
622 | ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : |
623 | BUS_DMA_WRITE)); |
624 | } |
625 | |
626 | switch (error) { |
627 | case 0: |
628 | break; |
629 | |
630 | |
631 | case ENOMEM: |
632 | case EAGAIN: |
633 | xs->error = XS_RESOURCE_SHORTAGE; |
634 | goto out_bad; |
635 | |
636 | default: |
637 | xs->error = XS_DRIVER_STUFFUP; |
638 | if (error == EFBIG) { |
639 | aprint_error_dev(sc->sc_dev, |
640 | "adv_scsi_cmd, more than %d" |
641 | " DMA segments\n" , |
642 | ASC_MAX_SG_LIST); |
643 | } else { |
644 | aprint_error_dev(sc->sc_dev, |
645 | "adv_scsi_cmd, error %d" |
646 | " loading DMA map\n" , error); |
647 | } |
648 | |
649 | out_bad: |
650 | adv_free_ccb(sc, ccb); |
651 | scsipi_done(xs); |
652 | return; |
653 | } |
654 | bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, |
655 | ccb->dmamap_xfer->dm_mapsize, |
656 | (flags & XS_CTL_DATA_IN) ? |
657 | BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); |
658 | |
659 | memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD)); |
660 | |
661 | for (nsegs = 0; |
662 | nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) { |
663 | ccb->sghead.sg_list[nsegs].addr = |
664 | ccb->dmamap_xfer->dm_segs[nsegs].ds_addr; |
665 | ccb->sghead.sg_list[nsegs].bytes = |
666 | ccb->dmamap_xfer->dm_segs[nsegs].ds_len; |
667 | } |
668 | |
669 | ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt = |
670 | ccb->dmamap_xfer->dm_nsegs; |
671 | |
672 | ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD; |
673 | ccb->scsiq.sg_head = &ccb->sghead; |
674 | ccb->scsiq.q1.data_addr = 0; |
675 | ccb->scsiq.q1.data_cnt = 0; |
676 | } else { |
677 | /* |
678 | * No data xfer, use non S/G values. |
679 | */ |
680 | ccb->scsiq.q1.data_addr = 0; |
681 | ccb->scsiq.q1.data_cnt = 0; |
682 | } |
683 | |
684 | #ifdef ASC_DEBUG |
685 | printf("id = %d, lun = %d, cmd = %d, ccb = 0x%lX\n" , |
686 | periph->periph_target, |
687 | periph->periph_lun, xs->cmd->opcode, |
688 | (unsigned long)ccb); |
689 | #endif |
690 | s = splbio(); |
691 | adv_queue_ccb(sc, ccb); |
692 | splx(s); |
693 | |
694 | if ((flags & XS_CTL_POLL) == 0) |
695 | return; |
696 | |
697 | /* Not allowed to use interrupts, poll for completion. */ |
698 | if (adv_poll(sc, xs, ccb->timeout)) { |
699 | adv_timeout(ccb); |
700 | if (adv_poll(sc, xs, ccb->timeout)) |
701 | adv_timeout(ccb); |
702 | } |
703 | return; |
704 | |
705 | case ADAPTER_REQ_GROW_RESOURCES: |
706 | /* XXX Not supported. */ |
707 | return; |
708 | |
709 | case ADAPTER_REQ_SET_XFER_MODE: |
710 | { |
711 | /* |
712 | * We can't really set the mode, but we know how to |
713 | * query what the firmware negotiated. |
714 | */ |
715 | struct scsipi_xfer_mode *xm = arg; |
716 | u_int8_t sdtr_data; |
717 | ASC_SCSI_BIT_ID_TYPE tid_bit; |
718 | |
719 | tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target); |
720 | |
721 | xm->xm_mode = 0; |
722 | xm->xm_period = 0; |
723 | xm->xm_offset = 0; |
724 | |
725 | if (sc->init_sdtr & tid_bit) { |
726 | xm->xm_mode |= PERIPH_CAP_SYNC; |
727 | sdtr_data = sc->sdtr_data[xm->xm_target]; |
728 | xm->xm_period = |
729 | sc->sdtr_period_tbl[(sdtr_data >> 4) & |
730 | (sc->max_sdtr_index - 1)]; |
731 | xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET; |
732 | } |
733 | |
734 | if (sc->use_tagged_qng & tid_bit) |
735 | xm->xm_mode |= PERIPH_CAP_TQING; |
736 | |
737 | scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); |
738 | return; |
739 | } |
740 | } |
741 | } |
742 | |
743 | int |
744 | adv_intr(void *arg) |
745 | { |
746 | ASC_SOFTC *sc = arg; |
747 | |
748 | #ifdef ASC_DEBUG |
749 | int int_pend = FALSE; |
750 | |
751 | if (ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh)) { |
752 | int_pend = TRUE; |
753 | printf("ISR - " ); |
754 | } |
755 | #endif |
756 | AscISR(sc); |
757 | #ifdef ASC_DEBUG |
758 | if(int_pend) |
759 | printf("\n" ); |
760 | #endif |
761 | |
762 | return (1); |
763 | } |
764 | |
765 | |
766 | /* |
767 | * Poll a particular unit, looking for a particular xs |
768 | */ |
769 | static int |
770 | adv_poll(ASC_SOFTC *sc, struct scsipi_xfer *xs, int count) |
771 | { |
772 | |
773 | /* timeouts are in msec, so we loop in 1000 usec cycles */ |
774 | while (count) { |
775 | adv_intr(sc); |
776 | if (xs->xs_status & XS_STS_DONE) |
777 | return (0); |
778 | delay(1000); /* only happens in boot so ok */ |
779 | count--; |
780 | } |
781 | return (1); |
782 | } |
783 | |
784 | |
785 | static void |
786 | adv_timeout(void *arg) |
787 | { |
788 | ADV_CCB *ccb = arg; |
789 | struct scsipi_xfer *xs = ccb->xs; |
790 | struct scsipi_periph *periph = xs->xs_periph; |
791 | ASC_SOFTC *sc = |
792 | device_private(periph->periph_channel->chan_adapter->adapt_dev); |
793 | int s; |
794 | |
795 | scsipi_printaddr(periph); |
796 | printf("timed out" ); |
797 | |
798 | s = splbio(); |
799 | |
800 | /* |
801 | * If it has been through before, then a previous abort has failed, |
802 | * don't try abort again, reset the bus instead. |
803 | */ |
804 | if (ccb->flags & CCB_ABORT) { |
805 | /* abort timed out */ |
806 | printf(" AGAIN. Resetting Bus\n" ); |
807 | /* Lets try resetting the bus! */ |
808 | if (AscResetBus(sc) == ASC_ERROR) { |
809 | ccb->timeout = sc->scsi_reset_wait; |
810 | adv_queue_ccb(sc, ccb); |
811 | } |
812 | } else { |
813 | /* abort the operation that has timed out */ |
814 | printf("\n" ); |
815 | AscAbortCCB(sc, ccb); |
816 | ccb->xs->error = XS_TIMEOUT; |
817 | ccb->timeout = ADV_ABORT_TIMEOUT; |
818 | ccb->flags |= CCB_ABORT; |
819 | adv_queue_ccb(sc, ccb); |
820 | } |
821 | |
822 | splx(s); |
823 | } |
824 | |
825 | |
826 | static void |
827 | adv_watchdog(void *arg) |
828 | { |
829 | ADV_CCB *ccb = arg; |
830 | struct scsipi_xfer *xs = ccb->xs; |
831 | struct scsipi_periph *periph = xs->xs_periph; |
832 | ASC_SOFTC *sc = |
833 | device_private(periph->periph_channel->chan_adapter->adapt_dev); |
834 | int s; |
835 | |
836 | s = splbio(); |
837 | |
838 | ccb->flags &= ~CCB_WATCHDOG; |
839 | adv_start_ccbs(sc); |
840 | |
841 | splx(s); |
842 | } |
843 | |
844 | |
845 | /******************************************************************************/ |
846 | /* NARROW boards Interrupt callbacks */ |
847 | /******************************************************************************/ |
848 | |
849 | |
850 | /* |
851 | * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR() |
852 | * |
853 | * Interrupt callback function for the Narrow SCSI Asc Library. |
854 | */ |
855 | static void |
856 | adv_narrow_isr_callback(ASC_SOFTC *sc, ASC_QDONE_INFO *qdonep) |
857 | { |
858 | bus_dma_tag_t dmat = sc->sc_dmat; |
859 | ADV_CCB *ccb; |
860 | struct scsipi_xfer *xs; |
861 | struct scsi_sense_data *s1, *s2; |
862 | |
863 | |
864 | ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr); |
865 | xs = ccb->xs; |
866 | |
867 | #ifdef ASC_DEBUG |
868 | printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, " , |
869 | (unsigned long)ccb, |
870 | xs->xs_periph->periph_target, |
871 | xs->xs_periph->periph_lun, xs->cmd->opcode); |
872 | #endif |
873 | callout_stop(&ccb->xs->xs_callout); |
874 | |
875 | /* |
876 | * If we were a data transfer, unload the map that described |
877 | * the data buffer. |
878 | */ |
879 | if (xs->datalen) { |
880 | bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, |
881 | ccb->dmamap_xfer->dm_mapsize, |
882 | (xs->xs_control & XS_CTL_DATA_IN) ? |
883 | BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); |
884 | bus_dmamap_unload(dmat, ccb->dmamap_xfer); |
885 | } |
886 | if ((ccb->flags & CCB_ALLOC) == 0) { |
887 | aprint_error_dev(sc->sc_dev, "exiting ccb not allocated!\n" ); |
888 | Debugger(); |
889 | return; |
890 | } |
891 | /* |
892 | * 'qdonep' contains the command's ending status. |
893 | */ |
894 | #ifdef ASC_DEBUG |
895 | printf("d_s=%d, h_s=%d" , qdonep->d3.done_stat, qdonep->d3.host_stat); |
896 | #endif |
897 | switch (qdonep->d3.done_stat) { |
898 | case ASC_QD_NO_ERROR: |
899 | switch (qdonep->d3.host_stat) { |
900 | case ASC_QHSTA_NO_ERROR: |
901 | xs->error = XS_NOERROR; |
902 | xs->resid = 0; |
903 | break; |
904 | |
905 | default: |
906 | /* QHSTA error occurred */ |
907 | xs->error = XS_DRIVER_STUFFUP; |
908 | break; |
909 | } |
910 | |
911 | /* |
912 | * If an INQUIRY command completed successfully, then call |
913 | * the AscInquiryHandling() function to patch bugged boards. |
914 | */ |
915 | if ((xs->cmd->opcode == SCSICMD_Inquiry) && |
916 | (xs->xs_periph->periph_lun == 0) && |
917 | (xs->datalen - qdonep->remain_bytes) >= 8) { |
918 | AscInquiryHandling(sc, |
919 | xs->xs_periph->periph_target & 0x7, |
920 | (ASC_SCSI_INQUIRY *) xs->data); |
921 | } |
922 | break; |
923 | |
924 | case ASC_QD_WITH_ERROR: |
925 | switch (qdonep->d3.host_stat) { |
926 | case ASC_QHSTA_NO_ERROR: |
927 | if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) { |
928 | s1 = &ccb->scsi_sense; |
929 | s2 = &xs->sense.scsi_sense; |
930 | *s2 = *s1; |
931 | xs->error = XS_SENSE; |
932 | } else { |
933 | xs->error = XS_DRIVER_STUFFUP; |
934 | } |
935 | break; |
936 | |
937 | case ASC_QHSTA_M_SEL_TIMEOUT: |
938 | xs->error = XS_SELTIMEOUT; |
939 | break; |
940 | |
941 | default: |
942 | /* QHSTA error occurred */ |
943 | xs->error = XS_DRIVER_STUFFUP; |
944 | break; |
945 | } |
946 | break; |
947 | |
948 | case ASC_QD_ABORTED_BY_HOST: |
949 | default: |
950 | xs->error = XS_DRIVER_STUFFUP; |
951 | break; |
952 | } |
953 | |
954 | adv_free_ccb(sc, ccb); |
955 | scsipi_done(xs); |
956 | } |
957 | |