kernel: Add D_MPSAFE to the ops of mfi(4), mrsas(4) and twa(4).
[dragonfly.git] / sys / dev / raid / ips / ips_commands.c
1 /*-
2  * Written by: David Jeffery
3  * Copyright (c) 2002 Adaptec Inc.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  *
27  * $FreeBSD: src/sys/dev/ips/ips_commands.c,v 1.10 2004/05/30 04:01:29 scottl Exp $
28  */
29
30 #include <sys/devicestat.h>
31 #include <sys/sysctl.h>
32 #include <dev/raid/ips/ips.h>
33 #include <dev/raid/ips/ips_disk.h>
34
35 static int ips_debug_ignore_flush_cmd;
36 TUNABLE_INT("debug.ips.ignore_flush_cmd", &ips_debug_ignore_flush_cmd);
37 SYSCTL_NODE(_debug, OID_AUTO, ips, CTLFLAG_RD, 0, "");
38 SYSCTL_INT(_debug_ips, OID_AUTO, ignore_flush_cmd, CTLFLAG_RW,
39            &ips_debug_ignore_flush_cmd, 0,
40            "Do not issue IPS_CACHE_FLUSH_CMD on BUF_CMD_FLUSH");
41
42 int
43 ips_timed_wait(ips_command_t *command, const char *id, int timo)
44 {
45         int error = 0;
46
47         while (command->completed == 0) {
48                 crit_enter();
49                 if (command->completed == 0)
50                         error = tsleep(&command->completed, 0, id, timo);
51                 crit_exit();
52                 if (error == EWOULDBLOCK) {
53                         error = ETIMEDOUT;
54                         break;
55                 }
56         }
57         return(error);
58 }
59
60 /*
61  * This is an interrupt callback.  It is called from
62  * interrupt context when the adapter has completed the
63  * command, and wakes up anyone waiting on the command.
64  */
65 static void
66 ips_wakeup_callback(ips_command_t *command)
67 {
68         bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
69                         BUS_DMASYNC_POSTWRITE);
70         command->completed = 1;
71         wakeup(&command->completed);
72 }
73
74 /*
75  * Below are a series of functions for sending an IO request
76  * to the adapter.  The flow order is: start, send, callback, finish.
77  * The caller must have already assembled an iorequest struct to hold
78  * the details of the IO request.
79  */
80 static void
81 ips_io_request_finish(ips_command_t *command)
82 {
83         struct bio *bio = command->arg;
84
85         if (ips_read_request(bio)) {
86                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
87                                 BUS_DMASYNC_POSTREAD);
88         } else {
89                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
90                                 BUS_DMASYNC_POSTWRITE);
91         }
92         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
93         if (COMMAND_ERROR(&command->status)) {
94                 bio->bio_buf->b_flags |=B_ERROR;
95                 bio->bio_buf->b_error = EIO;
96         }
97         ips_insert_free_cmd(command->sc, command);
98         ipsd_finish(bio);
99 }
100
101 static void
102 ips_io_request_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
103                         int error)
104 {
105         ips_softc_t *sc;
106         ips_command_t *command = cmdptr;
107         ips_sg_element_t *sg_list;
108         ips_io_cmd *command_struct;
109         struct bio *bio = command->arg;
110         struct buf *bp = bio->bio_buf;
111         ipsdisk_softc_t *dsc;
112         int i, length = 0;
113         u_int8_t cmdtype;
114
115         sc = command->sc;
116         if (error) {
117                 kprintf("ips: error = %d in ips_sg_request_callback\n", error);
118                 bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
119                 bp->b_flags |= B_ERROR;
120                 bp->b_error = ENOMEM;
121                 ips_insert_free_cmd(sc, command);
122                 ipsd_finish(bio);
123                 return;
124         }
125         dsc = bio->bio_driver_info;
126         command_struct = (ips_io_cmd *)command->command_buffer;
127         command_struct->id = command->id;
128         command_struct->drivenum = dsc->sc->drives[dsc->disk_number].drivenum;
129
130         if (segnum != 1) {
131                 if (ips_read_request(bio))
132                         cmdtype = IPS_SG_READ_CMD;
133                 else
134                         cmdtype = IPS_SG_WRITE_CMD;
135                 command_struct->segnum = segnum;
136                 sg_list = (ips_sg_element_t *)((u_int8_t *)
137                            command->command_buffer + IPS_COMMAND_LEN);
138                 for (i = 0; i < segnum; i++) {
139                         sg_list[i].addr = segments[i].ds_addr;
140                         sg_list[i].len = segments[i].ds_len;
141                         length += segments[i].ds_len;
142                 }
143                 command_struct->buffaddr =
144                     (u_int32_t)command->command_phys_addr + IPS_COMMAND_LEN;
145         } else {
146                 if (ips_read_request(bio))
147                         cmdtype = IPS_READ_CMD;
148                 else
149                         cmdtype = IPS_WRITE_CMD;
150                 command_struct->buffaddr = segments[0].ds_addr;
151                 length = segments[0].ds_len;
152         }
153         command_struct->command = cmdtype;
154         command_struct->lba = bio->bio_offset / IPS_BLKSIZE;
155         length = (length + IPS_BLKSIZE - 1)/IPS_BLKSIZE;
156         command_struct->length = length;
157         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
158                         BUS_DMASYNC_PREWRITE);
159         if (ips_read_request(bio)) {
160                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
161                                 BUS_DMASYNC_PREREAD);
162         } else {
163                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
164                                 BUS_DMASYNC_PREWRITE);
165         }
166         PRINTF(10, "ips test: command id: %d segments: %d "
167                 "pblkno: %lld length: %d, ds_len: %d\n", command->id, segnum,
168                 bio->bio_offset / IPS_BLKSIZE,
169                 length, segments[0].ds_len);
170
171         sc->ips_issue_cmd(command);
172         return;
173 }
174
175 static void
176 ips_flush_request_finish(ips_command_t *command)
177 {
178         ips_generic_cmd *gencmd = command->command_buffer;
179         struct bio *bio = command->arg;
180
181         if (COMMAND_ERROR(&command->status)) {
182                 device_printf(command->sc->dev,
183                               "cmd=0x%x,st=0x%x,est=0x%x\n",
184                               gencmd->command,
185                               command->status.fields.basic_status,
186                               command->status.fields.extended_status);
187
188                 bio->bio_buf->b_flags |= B_ERROR;
189                 bio->bio_buf->b_error = EIO;
190         }
191         ips_insert_free_cmd(command->sc, command);
192         ipsd_finish(bio);
193 }
194
195 static int
196 ips_send_flush_request(ips_command_t *command, struct bio *bio)
197 {
198         command->arg = bio;
199         ips_generic_cmd *flush_cmd;
200         ips_softc_t *sc = command->sc;
201
202         if (!ips_debug_ignore_flush_cmd) {
203                 ips_insert_free_cmd(sc, command);
204                 ipsd_finish(bio);
205                 return 0;
206         }
207
208         command->callback = ips_flush_request_finish;
209         flush_cmd = command->command_buffer;
210         flush_cmd->command      = IPS_CACHE_FLUSH_CMD;
211         flush_cmd->id           = command->id;
212         flush_cmd->drivenum     = 0;
213         flush_cmd->buffaddr     = 0;
214         flush_cmd->lba          = 0;
215         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
216                         BUS_DMASYNC_PREWRITE);
217
218         sc->ips_issue_cmd(command);
219         return 0;
220 }
221
222
223 static int
224 ips_send_io_request(ips_command_t *command, struct bio *bio)
225 {
226         struct buf *bp = bio->bio_buf;
227
228         command->callback = ips_io_request_finish;
229         command->arg = bio;
230         PRINTF(10, "ips test: : bcount %ld\n", bp->b_bcount);
231         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
232                         bp->b_data, bp->b_bcount,
233                         ips_io_request_callback, command, 0);
234         return 0;
235 }
236
237 void
238 ips_start_io_request(ips_softc_t *sc)
239 {
240         ips_command_t *command;
241         struct bio *bio;
242
243         bio = bioq_first(&sc->bio_queue);
244         if (bio == NULL)
245                 return;
246         if (ips_get_free_cmd(sc, &command, 0) != 0)
247                 return;
248         bioq_remove(&sc->bio_queue, bio);
249         if (bio->bio_buf->b_cmd == BUF_CMD_FLUSH)
250                 ips_send_flush_request(command, bio);
251         else
252                 ips_send_io_request(command, bio);
253 }
254
255 /*
256  * Below are a series of functions for sending an adapter info request
257  * to the adapter.  The flow order is: get, send, callback. It uses
258  * the generic finish callback at the top of this file.
259  * This can be used to get configuration/status info from the card
260  */
261 static void
262 ips_adapter_info_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum,
263                           int error)
264 {
265         ips_softc_t *sc;
266         ips_command_t *command = cmdptr;
267         ips_adapter_info_cmd *command_struct;
268         sc = command->sc;
269         if (error) {
270                 command->status.value = IPS_ERROR_STATUS; /* a lovely error value */
271                 ips_insert_free_cmd(sc, command);
272                 kprintf("ips: error = %d in ips_get_adapter_info\n", error);
273                 return;
274         }
275         command_struct = (ips_adapter_info_cmd *)command->command_buffer;
276         command_struct->command = IPS_ADAPTER_INFO_CMD;
277         command_struct->id = command->id;
278         command_struct->buffaddr = segments[0].ds_addr;
279
280         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
281                         BUS_DMASYNC_PREWRITE);
282         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
283                         BUS_DMASYNC_PREREAD);
284         sc->ips_issue_cmd(command);
285 }
286
287 static int
288 ips_send_adapter_info_cmd(ips_command_t *command)
289 {
290         ips_softc_t *sc = command->sc;
291         int error = 0;
292
293         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
294                                 /* alignemnt */ 1,
295                                 /* boundary  */ 0,
296                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
297                                 /* highaddr  */ BUS_SPACE_MAXADDR,
298                                 /* filter    */ NULL,
299                                 /* filterarg */ NULL,
300                                 /* maxsize   */ IPS_ADAPTER_INFO_LEN,
301                                 /* numsegs   */ 1,
302                                 /* maxsegsize*/ IPS_ADAPTER_INFO_LEN,
303                                 /* flags     */ 0,
304                                 &command->data_dmatag) != 0) {
305                 kprintf("ips: can't alloc dma tag for adapter status\n");
306                 error = ENOMEM;
307                 goto exit;
308         }
309         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
310            BUS_DMA_NOWAIT, &command->data_dmamap)) {
311                 error = ENOMEM;
312                 goto exit;
313         }
314         command->callback = ips_wakeup_callback;
315         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
316             command->data_buffer, IPS_ADAPTER_INFO_LEN,
317             ips_adapter_info_callback, command, BUS_DMA_NOWAIT);
318         if ((command->status.value == IPS_ERROR_STATUS) ||
319             ips_timed_wait(command, "ips", 30 * hz) != 0)
320                 error = ETIMEDOUT;
321         if (error == 0) {
322                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
323                     BUS_DMASYNC_POSTREAD);
324                 memcpy(&(sc->adapter_info), command->data_buffer,
325                         IPS_ADAPTER_INFO_LEN);
326         }
327         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
328 exit:
329         /* I suppose I should clean up my memory allocations */
330         bus_dmamem_free(command->data_dmatag, command->data_buffer,
331             command->data_dmamap);
332         bus_dma_tag_destroy(command->data_dmatag);
333         ips_insert_free_cmd(sc, command);
334         return error;
335 }
336
337 int
338 ips_get_adapter_info(ips_softc_t *sc)
339 {
340         ips_command_t *command;
341         int error = 0;
342
343         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
344                 device_printf(sc->dev, "unable to get adapter configuration\n");
345                 return ENXIO;
346         }
347         ips_send_adapter_info_cmd(command);
348         if (COMMAND_ERROR(&command->status))
349                 error = ENXIO;
350         return error;
351 }
352
353 /*
354  * Below are a series of functions for sending a drive info request
355  * to the adapter.  The flow order is: get, send, callback. It uses
356  * the generic finish callback at the top of this file.
357  * This can be used to get drive status info from the card
358  */
359 static void
360 ips_drive_info_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
361                         int error)
362 {
363         ips_softc_t *sc;
364         ips_command_t *command = cmdptr;
365         ips_drive_cmd *command_struct;
366
367         sc = command->sc;
368         if (error) {
369
370                 command->status.value = IPS_ERROR_STATUS;
371                 ips_insert_free_cmd(sc, command);
372                 kprintf("ips: error = %d in ips_get_drive_info\n", error);
373                 return;
374         }
375         command_struct = (ips_drive_cmd *)command->command_buffer;
376         command_struct->command = IPS_DRIVE_INFO_CMD;
377         command_struct->id = command->id;
378         command_struct->buffaddr = segments[0].ds_addr;
379         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
380             BUS_DMASYNC_PREWRITE);
381         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
382             BUS_DMASYNC_PREREAD);
383         sc->ips_issue_cmd(command);
384 }
385
386 static int
387 ips_send_drive_info_cmd(ips_command_t *command)
388 {
389         int error = 0;
390         ips_softc_t *sc = command->sc;
391         ips_drive_info_t *driveinfo;
392
393         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
394                                 /* alignemnt */ 1,
395                                 /* boundary  */ 0,
396                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
397                                 /* highaddr  */ BUS_SPACE_MAXADDR,
398                                 /* filter    */ NULL,
399                                 /* filterarg */ NULL,
400                                 /* maxsize   */ IPS_DRIVE_INFO_LEN,
401                                 /* numsegs   */ 1,
402                                 /* maxsegsize*/ IPS_DRIVE_INFO_LEN,
403                                 /* flags     */ 0,
404                                 &command->data_dmatag) != 0) {
405                 kprintf("ips: can't alloc dma tag for drive status\n");
406                 error = ENOMEM;
407                 goto exit;
408         }
409         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
410             BUS_DMA_NOWAIT, &command->data_dmamap)) {
411                 error = ENOMEM;
412                 goto exit;
413         }
414         command->callback = ips_wakeup_callback;
415         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
416             command->data_buffer,IPS_DRIVE_INFO_LEN,
417             ips_drive_info_callback, command, BUS_DMA_NOWAIT);
418         if ((command->status.value == IPS_ERROR_STATUS) ||
419             ips_timed_wait(command, "ips", 10 * hz) != 0)
420                 error = ETIMEDOUT;
421
422         if (error == 0) {
423                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
424                     BUS_DMASYNC_POSTREAD);
425                 driveinfo = command->data_buffer;
426                 memcpy(sc->drives, driveinfo->drives, sizeof(ips_drive_t) * 8);
427                 sc->drivecount = driveinfo->drivecount;
428                 device_printf(sc->dev, "logical drives: %d\n", sc->drivecount);
429         }
430         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
431 exit:
432         /* I suppose I should clean up my memory allocations */
433         bus_dmamem_free(command->data_dmatag, command->data_buffer,
434                         command->data_dmamap);
435         bus_dma_tag_destroy(command->data_dmatag);
436         ips_insert_free_cmd(sc, command);
437         return error;
438 }
439
440 int
441 ips_get_drive_info(ips_softc_t *sc)
442 {
443         int error = 0;
444         ips_command_t *command;
445
446         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
447                 device_printf(sc->dev, "unable to get drive configuration\n");
448                 return ENXIO;
449         }
450         ips_send_drive_info_cmd(command);
451         if (COMMAND_ERROR(&command->status))
452                 error = ENXIO;
453         return error;
454 }
455
456 /*
457  * Below is a pair of functions for making sure data is safely
458  * on disk by flushing the adapter's cache.
459  */
460 static int
461 ips_send_flush_cache_cmd(ips_command_t *command)
462 {
463         ips_softc_t *sc = command->sc;
464         ips_generic_cmd *command_struct;
465
466         PRINTF(10,"ips test: got a command, building flush command\n");
467         command->callback = ips_wakeup_callback;
468         command_struct = (ips_generic_cmd *)command->command_buffer;
469         command_struct->command = IPS_CACHE_FLUSH_CMD;
470         command_struct->id = command->id;
471         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
472             BUS_DMASYNC_PREWRITE);
473         sc->ips_issue_cmd(command);
474         if (command->status.value != IPS_ERROR_STATUS)
475                 ips_timed_wait(command, "flush2", 0);
476         ips_insert_free_cmd(sc, command);
477         return 0;
478 }
479
480 int
481 ips_flush_cache(ips_softc_t *sc)
482 {
483         ips_command_t *command;
484
485         device_printf(sc->dev, "flushing cache\n");
486         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
487                 device_printf(sc->dev, "ERROR: unable to get a command! "
488                     "can't flush cache!\n");
489                 return(1);
490         }
491         ips_send_flush_cache_cmd(command);
492         if (COMMAND_ERROR(&command->status)) {
493                 device_printf(sc->dev, "ERROR: cache flush command failed!\n");
494                 return(1);
495         }
496         return 0;
497 }
498
499 /*
500  * Simplified localtime to provide timevalues for ffdc.
501  * Taken from libc/stdtime/localtime.c
502  */
503 static void
504 ips_ffdc_settime(ips_adapter_ffdc_cmd *command, time_t sctime)
505 {
506         long    days, rem, y;
507         int     yleap, *ip, month;
508         int     year_lengths[2] = { IPS_DAYSPERNYEAR, IPS_DAYSPERLYEAR };
509         int     mon_lengths[2][IPS_MONSPERYEAR] = {
510                 { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
511                 { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
512         };
513
514         days = sctime / IPS_SECSPERDAY;
515         rem  = sctime % IPS_SECSPERDAY;
516
517         command->hour = rem / IPS_SECSPERHOUR;
518         rem           = rem % IPS_SECSPERHOUR;
519
520         command->minute = rem / IPS_SECSPERMIN;
521         command->second = rem % IPS_SECSPERMIN;
522
523         y = IPS_EPOCH_YEAR;
524         while (days < 0 || days >= (long)year_lengths[yleap = ips_isleap(y)]) {
525                 long    newy;
526
527                 newy = y + days / IPS_DAYSPERNYEAR;
528                 if (days < 0)
529                         --newy;
530                 days -= (newy - y) * IPS_DAYSPERNYEAR +
531                     IPS_LEAPS_THRU_END_OF(newy - 1) -
532                     IPS_LEAPS_THRU_END_OF(y - 1);
533                 y = newy;
534         }
535         command->yearH = y / 100;
536         command->yearL = y % 100;
537         ip = mon_lengths[yleap];
538         for (month = 0; days >= (long)ip[month]; ++month)
539                 days = days - (long)ip[month];
540         command->month = month + 1;
541         command->day = days + 1;
542 }
543
544 static int
545 ips_send_ffdc_reset_cmd(ips_command_t *command)
546 {
547         ips_softc_t *sc = command->sc;
548         ips_adapter_ffdc_cmd *command_struct;
549
550         PRINTF(10, "ips test: got a command, building ffdc reset command\n");
551         command->callback = ips_wakeup_callback;
552         command_struct = (ips_adapter_ffdc_cmd *)command->command_buffer;
553         command_struct->command = IPS_FFDC_CMD;
554         command_struct->id = command->id;
555         command_struct->reset_count = sc->ffdc_resetcount;
556         command_struct->reset_type  = 0x0;
557         ips_ffdc_settime(command_struct, sc->ffdc_resettime.tv_sec);
558         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
559             BUS_DMASYNC_PREWRITE);
560         sc->ips_issue_cmd(command);
561         if (command->status.value != IPS_ERROR_STATUS)
562                 ips_timed_wait(command, "ffdc", 0);
563         ips_insert_free_cmd(sc, command);
564         return 0;
565 }
566
567 int
568 ips_ffdc_reset(ips_softc_t *sc)
569 {
570         ips_command_t *command;
571
572         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
573                 device_printf(sc->dev, "ERROR: unable to get a command! "
574                     "can't send ffdc reset!\n");
575                 return 1;
576         }
577         ips_send_ffdc_reset_cmd(command);
578         if (COMMAND_ERROR(&command->status)) {
579                 /*
580                  * apparently some cards may report error status for
581                  * an ffdc reset command, even though it works correctly
582                  * afterwards.  just complain about that and proceed here.
583                  */
584                 device_printf(sc->dev,
585                               "ERROR: ffdc reset command failed(0x%04x)!\n",
586                               command->status.value);
587         }
588         return 0;
589 }
590
591 static void
592 ips_write_nvram(ips_command_t *command)
593 {
594         ips_softc_t *sc = command->sc;
595         ips_rw_nvram_cmd *command_struct;
596         ips_nvram_page5 *nvram;
597
598         /*FIXME check for error */
599         command->callback = ips_wakeup_callback;
600         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
601         command_struct->command = IPS_RW_NVRAM_CMD;
602         command_struct->id = command->id;
603         command_struct->pagenum = 5;
604         command_struct->rw      = 1;    /* write */
605         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
606             BUS_DMASYNC_POSTREAD);
607         nvram = command->data_buffer;
608         /* retrieve adapter info and save in sc */
609         sc->adapter_type = nvram->adapter_type;
610         strncpy(nvram->driver_high, IPS_VERSION_MAJOR, 4);
611         strncpy(nvram->driver_low, IPS_VERSION_MINOR, 4);
612         nvram->operating_system = IPS_OS_FREEBSD;
613         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
614             BUS_DMASYNC_PREWRITE);
615         sc->ips_issue_cmd(command);
616 }
617
618 static void
619 ips_read_nvram_callback(void *cmdptr, bus_dma_segment_t *segments, int segnum,
620                         int error)
621 {
622         ips_softc_t *sc;
623         ips_command_t *command = cmdptr;
624         ips_rw_nvram_cmd *command_struct;
625
626         sc = command->sc;
627         if (error) {
628                 command->status.value = IPS_ERROR_STATUS;
629                 ips_insert_free_cmd(sc, command);
630                 kprintf("ips: error = %d in ips_read_nvram_callback\n", error);
631                 return;
632         }
633         command_struct = (ips_rw_nvram_cmd *)command->command_buffer;
634         command_struct->command = IPS_RW_NVRAM_CMD;
635         command_struct->id = command->id;
636         command_struct->pagenum = 5;
637         command_struct->rw = 0;
638         command_struct->buffaddr = segments[0].ds_addr;
639
640         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
641             BUS_DMASYNC_PREWRITE);
642         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
643             BUS_DMASYNC_PREREAD);
644         sc->ips_issue_cmd(command);
645 }
646
647 static int
648 ips_read_nvram(ips_command_t *command)
649 {
650         int error = 0;
651         ips_softc_t *sc = command->sc;
652
653         if (bus_dma_tag_create( /* parent    */ sc->adapter_dmatag,
654                                 /* alignemnt */ 1,
655                                 /* boundary  */ 0,
656                                 /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
657                                 /* highaddr  */ BUS_SPACE_MAXADDR,
658                                 /* filter    */ NULL,
659                                 /* filterarg */ NULL,
660                                 /* maxsize   */ IPS_NVRAM_PAGE_SIZE,
661                                 /* numsegs   */ 1,
662                                 /* maxsegsize*/ IPS_NVRAM_PAGE_SIZE,
663                                 /* flags     */ 0,
664                                 &command->data_dmatag) != 0) {
665                 kprintf("ips: can't alloc dma tag for nvram\n");
666                 error = ENOMEM;
667                 goto exit;
668         }
669         if (bus_dmamem_alloc(command->data_dmatag, &command->data_buffer,
670             BUS_DMA_NOWAIT, &command->data_dmamap)) {
671                 error = ENOMEM;
672                 goto exit;
673         }
674         command->callback = ips_write_nvram;
675         bus_dmamap_load(command->data_dmatag, command->data_dmamap,
676             command->data_buffer, IPS_NVRAM_PAGE_SIZE, ips_read_nvram_callback,
677             command, BUS_DMA_NOWAIT);
678         if ((command->status.value == IPS_ERROR_STATUS) ||
679             ips_timed_wait(command, "ips", 0) != 0)
680                 error = ETIMEDOUT;
681         if (error == 0) {
682                 bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
683                                 BUS_DMASYNC_POSTWRITE);
684         }
685         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
686 exit:
687         bus_dmamem_free(command->data_dmatag, command->data_buffer,
688                         command->data_dmamap);
689         bus_dma_tag_destroy(command->data_dmatag);
690         ips_insert_free_cmd(sc, command);
691         return error;
692 }
693
694 int
695 ips_update_nvram(ips_softc_t *sc)
696 {
697         ips_command_t *command;
698
699         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
700                 device_printf(sc->dev, "ERROR: unable to get a command! "
701                     "can't update nvram\n");
702                 return 1;
703         }
704         ips_read_nvram(command);
705         if (COMMAND_ERROR(&command->status)) {
706                 device_printf(sc->dev, "ERROR: nvram update command failed!\n");
707                 return 1;
708         }
709         return 0;
710 }
711
712 static int
713 ips_send_config_sync_cmd(ips_command_t *command)
714 {
715         ips_softc_t *sc = command->sc;
716         ips_generic_cmd *command_struct;
717
718         PRINTF(10, "ips test: got a command, building flush command\n");
719         command->callback = ips_wakeup_callback;
720         command_struct = (ips_generic_cmd *)command->command_buffer;
721         command_struct->command = IPS_CONFIG_SYNC_CMD;
722         command_struct->id = command->id;
723         command_struct->reserve2 = IPS_POCL;
724         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
725             BUS_DMASYNC_PREWRITE);
726         sc->ips_issue_cmd(command);
727         if (command->status.value != IPS_ERROR_STATUS)
728                 ips_timed_wait(command, "ipssyn", 0);
729         ips_insert_free_cmd(sc, command);
730         return 0;
731 }
732
733 static int
734 ips_send_error_table_cmd(ips_command_t *command)
735 {
736         ips_softc_t *sc = command->sc;
737         ips_generic_cmd *command_struct;
738
739         PRINTF(10, "ips test: got a command, building errortable command\n");
740         command->callback = ips_wakeup_callback;
741         command_struct = (ips_generic_cmd *)command->command_buffer;
742         command_struct->command = IPS_ERROR_TABLE_CMD;
743         command_struct->id = command->id;
744         command_struct->reserve2 = IPS_CSL;
745         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
746             BUS_DMASYNC_PREWRITE);
747         sc->ips_issue_cmd(command);
748         if (command->status.value != IPS_ERROR_STATUS)
749                 ips_timed_wait(command, "ipsetc", 0);
750         ips_insert_free_cmd(sc, command);
751         return 0;
752 }
753
754 int
755 ips_clear_adapter(ips_softc_t *sc)
756 {
757         ips_command_t *command;
758
759         device_printf(sc->dev, "syncing config\n");
760         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
761                 device_printf(sc->dev, "ERROR: unable to get a command! "
762                     "can't sync cache!\n");
763                 return 1;
764         }
765         ips_send_config_sync_cmd(command);
766         if (COMMAND_ERROR(&command->status)) {
767                 device_printf(sc->dev, "ERROR: cache sync command failed!\n");
768                 return 1;
769         }
770         device_printf(sc->dev, "clearing error table\n");
771         if (ips_get_free_cmd(sc, &command, IPS_STATIC_FLAG) != 0) {
772                 device_printf(sc->dev, "ERROR: unable to get a command! "
773                     "can't sync cache!\n");
774                 return 1;
775         }
776         ips_send_error_table_cmd(command);
777         if (COMMAND_ERROR(&command->status)) {
778                 device_printf(sc->dev, "ERROR: etable command failed!\n");
779                 return 1;
780         }
781         return 0;
782 }