1/* $NetBSD: scsipiconf.h,v 1.124 2016/11/20 15:37:19 mlelstv Exp $ */
2
3/*-
4 * Copyright (c) 1998, 1999, 2000, 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum; by Jason R. Thorpe of the Numerical Aerospace
9 * Simulation Facility, NASA Ames Research Center.
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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*
34 * Originally written by Julian Elischer (julian@tfs.com)
35 * for TRW Financial Systems for use under the MACH(2.5) operating system.
36 *
37 * TRW Financial Systems, in accordance with their agreement with Carnegie
38 * Mellon University, makes this software available to CMU to distribute
39 * or use in any manner that they see fit as long as this message is kept with
40 * the software. For this reason TFS also grants any other persons or
41 * organisations permission to use or modify this software.
42 *
43 * TFS supplies this software to be publicly redistributed
44 * on the understanding that TFS is not responsible for the correct
45 * functioning of this software in any circumstances.
46 *
47 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
48 */
49
50#ifndef _DEV_SCSIPI_SCSIPICONF_H_
51#define _DEV_SCSIPI_SCSIPICONF_H_
52
53typedef int boolean;
54
55#include <sys/callout.h>
56#include <sys/queue.h>
57#include <sys/condvar.h>
58#include <dev/scsipi/scsi_spc.h>
59#include <dev/scsipi/scsipi_debug.h>
60
61struct buf;
62struct proc;
63struct device;
64struct scsipi_channel;
65struct scsipi_periph;
66struct scsipi_xfer;
67
68/*
69 * The following defines the scsipi_xfer queue.
70 */
71TAILQ_HEAD(scsipi_xfer_queue, scsipi_xfer);
72
73struct scsipi_generic {
74 u_int8_t opcode;
75 u_int8_t bytes[15];
76};
77
78
79/*
80 * scsipi_async_event_t:
81 *
82 * Asynchronous events from the adapter to the mid-layer and
83 * peripheral.
84 *
85 * Arguments:
86 *
87 * ASYNC_EVENT_MAX_OPENINGS scsipi_max_openings * -- max
88 * openings, device specified in
89 * parameters
90 *
91 * ASYNC_EVENT_XFER_MODE scsipi_xfer_mode * -- xfer mode
92 * parameters changed for I_T Nexus
93 * ASYNC_EVENT_RESET NULL - channel has been reset
94 */
95typedef enum {
96 ASYNC_EVENT_MAX_OPENINGS, /* set max openings on periph */
97 ASYNC_EVENT_XFER_MODE, /* xfer mode update for I_T */
98 ASYNC_EVENT_RESET /* channel reset */
99} scsipi_async_event_t;
100
101/*
102 * scsipi_max_openings:
103 *
104 * Argument for an ASYNC_EVENT_MAX_OPENINGS event.
105 */
106struct scsipi_max_openings {
107 int mo_target; /* openings are for this target... */
108 int mo_lun; /* ...and this lun */
109 int mo_openings; /* openings value */
110};
111
112/*
113 * scsipi_xfer_mode:
114 *
115 * Argument for an ASYNC_EVENT_XFER_MODE event.
116 */
117struct scsipi_xfer_mode {
118 int xm_target; /* target, for I_T Nexus */
119 int xm_mode; /* PERIPH_CAP* bits */
120 int xm_period; /* sync period */
121 int xm_offset; /* sync offset */
122};
123
124
125/*
126 * scsipi_adapter_req_t:
127 *
128 * Requests that can be made of an adapter.
129 *
130 * Arguments:
131 *
132 * ADAPTER_REQ_RUN_XFER scsipi_xfer * -- the xfer which
133 * is to be run
134 *
135 * ADAPTER_REQ_GROW_RESOURCES no argument
136 *
137 * ADAPTER_REQ_SET_XFER_MODE scsipi_xfer_mode * -- set the xfer
138 * mode for the I_T Nexus according to
139 * this
140 */
141typedef enum {
142 ADAPTER_REQ_RUN_XFER, /* run a scsipi_xfer */
143 ADAPTER_REQ_GROW_RESOURCES, /* grow xfer execution resources */
144 ADAPTER_REQ_SET_XFER_MODE /* set xfer mode */
145} scsipi_adapter_req_t;
146
147#ifdef _KERNEL
148/*
149 * scsipi_periphsw:
150 *
151 * Callbacks into periph driver from midlayer.
152 *
153 * psw_error Called by the bustype's interpret-sense routine
154 * to do periph-specific sense handling.
155 *
156 * psw_start Called by midlayer to restart a device once
157 * more command openings become available.
158 *
159 * psw_async Called by midlayer when an asynchronous event
160 * from the adapter occurs.
161 *
162 * psw_done Called by the midlayer when an xfer has completed.
163 */
164struct scsipi_periphsw {
165 int (*psw_error)(struct scsipi_xfer *);
166 void (*psw_start)(struct scsipi_periph *);
167 int (*psw_async)(struct scsipi_periph *,
168 scsipi_async_event_t, void *);
169 void (*psw_done)(struct scsipi_xfer *, int);
170};
171
172struct disk_parms;
173struct scsipi_inquiry_pattern;
174
175/*
176 * scsipi_adapter:
177 *
178 * This structure describes an instance of a SCSIPI adapter.
179 *
180 * Note that `adapt_openings' is used by (the common case of) adapters
181 * which have per-adapter resources. If an adapter's command resources
182 * are associated with a channel, then the `chan_openings' below will
183 * be used instead.
184 *
185 * Note that all adapter entry points take a pointer to a channel,
186 * as an adapter may have more than one channel, and the channel
187 * structure contains the channel number.
188 */
189struct scsipi_adapter {
190 device_t adapt_dev; /* pointer to adapter's device */
191 int adapt_nchannels; /* number of adapter channels */
192 volatile int adapt_refcnt; /* adapter's reference count */
193 int adapt_openings; /* total # of command openings */
194 int adapt_max_periph; /* max openings per periph */
195 int adapt_flags;
196
197 void (*adapt_request)(struct scsipi_channel *,
198 scsipi_adapter_req_t, void *);
199 void (*adapt_minphys)(struct buf *);
200 int (*adapt_ioctl)(struct scsipi_channel *, u_long,
201 void *, int, struct proc *);
202 int (*adapt_enable)(device_t, int);
203 int (*adapt_getgeom)(struct scsipi_periph *,
204 struct disk_parms *, u_long);
205 int (*adapt_accesschk)(struct scsipi_periph *,
206 struct scsipi_inquiry_pattern *);
207
208 kmutex_t adapt_mtx;
209 bool adapt_running; /* attachment initialized */
210};
211#endif
212
213/* adapt_flags */
214#define SCSIPI_ADAPT_POLL_ONLY 0x01 /* Adaptor can't do interrupts. */
215#define SCSIPI_ADAPT_MPSAFE 0x02 /* Adaptor doesn't need kernel lock */
216
217void scsipi_adapter_minphys(struct scsipi_channel *, struct buf *);
218void scsipi_adapter_request(struct scsipi_channel *,
219 scsipi_adapter_req_t, void *);
220int scsipi_adapter_ioctl(struct scsipi_channel *, u_long,
221 void *, int, struct proc *);
222int scsipi_adapter_enable(struct scsipi_adapter *, int);
223
224
225/*
226 * scsipi_bustype:
227 *
228 * This structure describes a SCSIPI bus type.
229 * The bustype_type member is shared with struct ata_bustype
230 * (because we can ata, atapi or scsi busses to the same controller)
231 */
232struct scsipi_bustype {
233 int bustype_type; /* symbolic name of type */
234
235 void (*bustype_cmd)(struct scsipi_xfer *);
236 int (*bustype_interpret_sense)(struct scsipi_xfer *);
237 void (*bustype_printaddr)(struct scsipi_periph *);
238 void (*bustype_kill_pending)(struct scsipi_periph *);
239 void (*bustype_async_event_xfer_mode)(struct scsipi_channel *,
240 void *);
241};
242
243/* bustype_type */
244/* type is stored in the first byte */
245#define SCSIPI_BUSTYPE_TYPE_SHIFT 0
246#define SCSIPI_BUSTYPE_TYPE(x) (((x) >> SCSIPI_BUSTYPE_TYPE_SHIFT) & 0xff)
247#define SCSIPI_BUSTYPE_SCSI 0 /* parallel SCSI */
248#define SCSIPI_BUSTYPE_ATAPI 1
249/* #define SCSIPI_BUSTYPE_ATA 2 */
250/* subtype is stored in the second byte */
251#define SCSIPI_BUSTYPE_SUBTYPE_SHIFT 8
252#define SCSIPI_BUSTYPE_SUBTYPE(x) (((x) >> SCSIPI_BUSTYPE_SUBTYPE_SHIFT) & 0xff)
253
254#define SCSIPI_BUSTYPE_BUSTYPE(t, s) \
255 ((t) << SCSIPI_BUSTYPE_TYPE_SHIFT | (s) << SCSIPI_BUSTYPE_SUBTYPE_SHIFT)
256/* subtypes are defined in each bus type headers */
257
258/*
259 * scsipi_channel:
260 *
261 * This structure describes a single channel of a SCSIPI adapter.
262 * An adapter may have one or more channels. See the comment above
263 * regarding the resource counter.
264 * Note: chan_bustype has to be first member, as its bustype_type member
265 * is shared with the aa_bustype member of struct ata_atapi_attach.
266 */
267
268#define SCSIPI_CHAN_PERIPH_BUCKETS 16
269#define SCSIPI_CHAN_PERIPH_HASHMASK (SCSIPI_CHAN_PERIPH_BUCKETS - 1)
270
271#ifdef _KERNEL
272struct scsipi_channel {
273 const struct scsipi_bustype *chan_bustype; /* channel's bus type */
274 const char *chan_name; /* this channel's name */
275
276 struct scsipi_adapter *chan_adapter; /* pointer to our adapter */
277
278 /* Periphs for this channel. */
279 LIST_HEAD(, scsipi_periph) chan_periphtab[SCSIPI_CHAN_PERIPH_BUCKETS];
280
281 int chan_channel; /* channel number */
282 int chan_flags; /* channel flags */
283 int chan_openings; /* number of command openings */
284 int chan_max_periph; /* max openings per periph */
285
286 int chan_ntargets; /* number of targets */
287 int chan_nluns; /* number of luns */
288 int chan_id; /* adapter's ID for this channel */
289
290 int chan_defquirks; /* default device's quirks */
291
292 struct lwp *chan_thread; /* completion thread */
293 int chan_tflags; /* flags for the completion thread */
294
295 int chan_qfreeze; /* freeze count for queue */
296
297 /* Job queue for this channel. */
298 struct scsipi_xfer_queue chan_queue;
299
300 /* Completed (async) jobs. */
301 struct scsipi_xfer_queue chan_complete;
302
303 /* callback we may have to call from completion thread */
304 void (*chan_callback)(struct scsipi_channel *, void *);
305 void *chan_callback_arg;
306
307 /* callback we may have to call after forking the kthread */
308 void (*chan_init_cb)(struct scsipi_channel *, void *);
309 void *chan_init_cb_arg;
310
311 kcondvar_t chan_cv_comp;
312 kcondvar_t chan_cv_thr;
313 kcondvar_t chan_cv_xs;
314
315#define chan_cv_complete(ch) (&(ch)->chan_cv_comp)
316#define chan_cv_thread(ch) (&(ch)->chan_cv_thr)
317};
318
319#define chan_running(ch) ((ch)->chan_adapter->adapt_running)
320#define chan_mtx(ch) (&(ch)->chan_adapter->adapt_mtx)
321#endif
322
323/* chan_flags */
324#define SCSIPI_CHAN_OPENINGS 0x01 /* use chan_openings */
325#define SCSIPI_CHAN_CANGROW 0x02 /* channel can grow resources */
326#define SCSIPI_CHAN_NOSETTLE 0x04 /* don't wait for devices to settle */
327#define SCSIPI_CHAN_TACTIVE 0x08 /* completion thread is active */
328
329/* chan thread flags (chan_tflags) */
330#define SCSIPI_CHANT_SHUTDOWN 0x01 /* channel is shutting down */
331#define SCSIPI_CHANT_CALLBACK 0x02 /* has to call chan_callback() */
332#define SCSIPI_CHANT_KICK 0x04 /* need to run queues */
333#define SCSIPI_CHANT_GROWRES 0x08 /* call ADAPTER_REQ_GROW_RESOURCES */
334
335#define SCSIPI_CHAN_MAX_PERIPH(chan) \
336 (((chan)->chan_flags & SCSIPI_CHAN_OPENINGS) ? \
337 (chan)->chan_max_periph : (chan)->chan_adapter->adapt_max_periph)
338
339
340#define scsipi_printaddr(periph) \
341 (*(periph)->periph_channel->chan_bustype->bustype_printaddr)((periph))
342
343#define scsipi_periph_bustype(periph) \
344 (periph)->periph_channel->chan_bustype->bustype_type
345
346
347/*
348 * Number of tag words in a periph structure:
349 *
350 * n_tag_words = ((256 / NBBY) / sizeof(u_int32_t))
351 */
352#define PERIPH_NTAGWORDS ((256 / 8) / sizeof(u_int32_t))
353
354
355#ifdef _KERNEL
356/*
357 * scsipi_periph:
358 *
359 * This structure describes the path between a peripheral device
360 * and an adapter. It contains a pointer to the adapter channel
361 * which in turn contains a pointer to the adapter.
362 *
363 * XXX Given the way NetBSD's autoconfiguration works, this is ...
364 * XXX nasty.
365 *
366 * Well, it's a lot nicer than it used to be, but there could
367 * still be an improvement.
368 */
369struct scsipi_periph {
370 device_t periph_dev; /* pointer to peripheral's device */
371 struct scsipi_channel *periph_channel; /* channel we're connected to */
372
373 /* link in channel's table of periphs */
374 LIST_ENTRY(scsipi_periph) periph_hash;
375
376 const struct scsipi_periphsw *periph_switch; /* peripheral's entry
377 points */
378 int periph_openings; /* max # of outstanding commands */
379 int periph_active; /* current # of outstanding commands */
380 int periph_sent; /* current # of commands sent to adapt*/
381
382 int periph_mode; /* operation modes, CAP bits */
383 int periph_period; /* sync period (factor) */
384 int periph_offset; /* sync offset */
385
386 /*
387 * Information gleaned from the inquiry data.
388 */
389 u_int8_t periph_type; /* basic device type */
390 int periph_cap; /* capabilities */
391 int periph_quirks; /* device's quirks */
392
393 int periph_flags; /* misc. flags */
394 int periph_dbflags; /* debugging flags */
395
396 int periph_target; /* target ID (drive # on ATAPI) */
397 int periph_lun; /* LUN (not used on ATAPI) */
398
399 int periph_version; /* ANSI SCSI version */
400
401 int periph_qfreeze; /* queue freeze count */
402
403 /* Bitmap of free command tags. */
404 u_int32_t periph_freetags[PERIPH_NTAGWORDS];
405
406 /* Pending scsipi_xfers on this peripheral. */
407 struct scsipi_xfer_queue periph_xferq;
408
409 callout_t periph_callout;
410
411 /* xfer which has a pending CHECK_CONDITION */
412 struct scsipi_xfer *periph_xscheck;
413
414 kcondvar_t periph_cv;
415#define periph_cv_periph(p) (&(p)->periph_cv)
416#define periph_cv_active(p) (&(p)->periph_cv)
417};
418#endif
419
420/*
421 * Macro to return the current xfer mode of a periph.
422 */
423#define PERIPH_XFER_MODE(periph) \
424 (((periph)->periph_flags & PERIPH_MODE_VALID) ? \
425 (periph)->periph_mode : 0)
426
427/* periph_cap */
428#define PERIPH_CAP_ANEC 0x0001 /* async event notification */
429#define PERIPH_CAP_TERMIOP 0x0002 /* terminate i/o proc. messages */
430#define PERIPH_CAP_RELADR 0x0004 /* relative addressing */
431#define PERIPH_CAP_WIDE32 0x0008 /* wide-32 transfers */
432#define PERIPH_CAP_WIDE16 0x0010 /* wide-16 transfers */
433 /* XXX 0x0020 reserved for ATAPI_CFG_DRQ_MASK */
434 /* XXX 0x0040 reserved for ATAPI_CFG_DRQ_MASK */
435#define PERIPH_CAP_SYNC 0x0080 /* synchronous transfers */
436#define PERIPH_CAP_LINKCMDS 0x0100 /* linked commands */
437#define PERIPH_CAP_TQING 0x0200 /* tagged queueing */
438#define PERIPH_CAP_SFTRESET 0x0400 /* soft RESET condition response */
439#define PERIPH_CAP_CMD16 0x0800 /* 16 byte commands (ATAPI) */
440#define PERIPH_CAP_DT 0x1000 /* supports DT clock */
441#define PERIPH_CAP_QAS 0x2000 /* supports quick arbit. and select. */
442#define PERIPH_CAP_IUS 0x4000 /* supports information unit xfers */
443
444/* periph_flags */
445#define PERIPH_REMOVABLE 0x0001 /* media is removable */
446#define PERIPH_MEDIA_LOADED 0x0002 /* media is loaded */
447#define PERIPH_WAITING 0x0004 /* process waiting for opening */
448#define PERIPH_OPEN 0x0008 /* device is open */
449#define PERIPH_WAITDRAIN 0x0010 /* waiting for pending xfers to drain */
450#define PERIPH_GROW_OPENINGS 0x0020 /* allow openings to grow */
451#define PERIPH_MODE_VALID 0x0040 /* periph_mode is valid */
452#define PERIPH_RECOVERING 0x0080 /* periph is recovering */
453#define PERIPH_RECOVERY_ACTIVE 0x0100 /* a recovery command is active */
454#define PERIPH_KEEP_LABEL 0x0200 /* retain label after 'full' close */
455#define PERIPH_SENSE 0x0400 /* periph has sense pending */
456#define PERIPH_UNTAG 0x0800 /* untagged command running */
457
458/* periph_quirks */
459#define PQUIRK_AUTOSAVE 0x00000001 /* do implicit SAVE POINTERS */
460#define PQUIRK_NOSYNC 0x00000002 /* does not grok SDTR */
461#define PQUIRK_NOWIDE 0x00000004 /* does not grok WDTR */
462#define PQUIRK_NOTAG 0x00000008 /* does not grok tagged cmds */
463#define PQUIRK_NOLUNS 0x00000010 /* DTWT with LUNs */
464#define PQUIRK_FORCELUNS 0x00000020 /* prehistoric device groks
465 LUNs */
466#define PQUIRK_NOMODESENSE 0x00000040 /* device doesn't do MODE SENSE
467 properly */
468#define PQUIRK_NOSYNCCACHE 0x00000100 /* do not issue SYNC CACHE */
469#define PQUIRK_LITTLETOC 0x00000400 /* audio TOC is little-endian */
470#define PQUIRK_NOCAPACITY 0x00000800 /* no READ CD CAPACITY */
471#define PQUIRK_NOTUR 0x00001000 /* no TEST UNIT READY */
472#define PQUIRK_NODOORLOCK 0x00002000 /* can't lock door */
473#define PQUIRK_NOSENSE 0x00004000 /* can't REQUEST SENSE */
474#define PQUIRK_ONLYBIG 0x00008000 /* only use SCSI_{R,W}_BIG */
475#define PQUIRK_NOBIGMODESENSE 0x00040000 /* has no big mode-sense op */
476#define PQUIRK_CAP_SYNC 0x00080000 /* SCSI device with ST sync op*/
477#define PQUIRK_CAP_WIDE16 0x00100000 /* SCSI device with ST wide op*/
478#define PQUIRK_CAP_NODT 0x00200000 /* signals DT, but can't. */
479#define PQUIRK_START 0x00400000 /* needs start before tur */
480
481
482/*
483 * Error values an adapter driver may return
484 */
485typedef enum {
486 XS_NOERROR, /* there is no error, (sense is invalid) */
487 XS_SENSE, /* Check the returned sense for the error */
488 XS_SHORTSENSE, /* Check the ATAPI sense for the error */
489 XS_DRIVER_STUFFUP, /* Driver failed to perform operation */
490 XS_RESOURCE_SHORTAGE, /* adapter resource shortage */
491 XS_SELTIMEOUT, /* The device timed out.. turned off? */
492 XS_TIMEOUT, /* The Timeout reported was caught by SW */
493 XS_BUSY, /* The device busy, try again later? */
494 XS_RESET, /* bus was reset; possible retry command */
495 XS_REQUEUE /* requeue this command */
496} scsipi_xfer_result_t;
497
498#ifdef _KERNEL
499/*
500 * Each scsipi transaction is fully described by one of these structures
501 * It includes information about the source of the command and also the
502 * device and adapter for which the command is destined.
503 *
504 * Before the HBA is given this transaction, channel_q is the linkage on
505 * the related channel's chan_queue.
506 *
507 * When the this transaction is taken off the channel's chan_queue and
508 * the HBA's request entry point is called with this transaction, the
509 * HBA can use the channel_q tag for whatever it likes until it calls
510 * scsipi_done for this transaction, at which time it has to stop
511 * using channel_q.
512 *
513 * After scsipi_done is called with this transaction and if there was an
514 * error on it, channel_q then becomes the linkage on the related channel's
515 * chan_complete cqueue.
516 *
517 * The device_q member is maintained by the scsipi middle layer. When
518 * a device issues a command, the xfer is placed on that device's
519 * pending commands queue. When an xfer is done and freed, it is taken
520 * off the device's queue. This allows for a device to wait for all of
521 * its pending commands to complete.
522 */
523struct scsipi_xfer {
524 TAILQ_ENTRY(scsipi_xfer) channel_q; /* entry on channel queue */
525 TAILQ_ENTRY(scsipi_xfer) device_q; /* device's pending xfers */
526 callout_t xs_callout; /* callout for adapter use */
527 int xs_control; /* control flags */
528 volatile int xs_status; /* status flags */
529 struct scsipi_periph *xs_periph;/* peripheral doing the xfer */
530 int xs_retries; /* the number of times to retry */
531 int xs_requeuecnt; /* number of requeues */
532 int timeout; /* in milliseconds */
533 struct scsipi_generic *cmd; /* The scsipi command to execute */
534 int cmdlen; /* how long it is */
535 u_char *data; /* DMA address OR a uio address */
536 int datalen; /* data len (blank if uio) */
537 int resid; /* how much buffer was not touched */
538 scsipi_xfer_result_t error; /* an error value */
539 struct buf *bp; /* If we need to associate with */
540 /* a buf */
541 union {
542 struct scsi_sense_data scsi_sense; /* 32 bytes */
543 u_int32_t atapi_sense;
544 } sense;
545
546 struct scsipi_xfer *xs_sensefor;/* we are requesting sense for this */
547 /* xfer */
548
549 u_int8_t status; /* SCSI status */
550
551 /*
552 * Info for tagged command queueing. This may or may not
553 * be used by a given adapter driver. These are the same
554 * as the bytes in the tag message.
555 */
556 u_int8_t xs_tag_type; /* tag type */
557 u_int8_t xs_tag_id; /* tag ID */
558
559 struct scsipi_generic cmdstore
560 __aligned(4); /* stash the command in here */
561
562#define xs_cv(xs) (&(xs)->xs_periph->periph_channel->chan_cv_xs)
563};
564#endif
565
566/*
567 * scsipi_xfer control flags
568 *
569 * To do:
570 *
571 * - figure out what to do with XS_CTL_ESCAPE
572 *
573 * - replace XS_CTL_URGENT with an `xs_priority' field?
574 */
575#define XS_CTL_NOSLEEP 0x00000001 /* don't sleep */
576#define XS_CTL_POLL 0x00000002 /* poll for completion */
577#define XS_CTL_DISCOVERY 0x00000004 /* doing device discovery */
578#define XS_CTL_ASYNC 0x00000008 /* command completes
579 asynchronously */
580#define XS_CTL_USERCMD 0x00000010 /* user issued command */
581#define XS_CTL_SILENT 0x00000020 /* don't print sense info */
582#define XS_CTL_IGNORE_NOT_READY 0x00000040 /* ignore NOT READY */
583#define XS_CTL_IGNORE_MEDIA_CHANGE \
584 0x00000080 /* ignore media change */
585#define XS_CTL_IGNORE_ILLEGAL_REQUEST \
586 0x00000100 /* ignore ILLEGAL REQUEST */
587#define XS_CTL_SILENT_NODEV 0x00000200 /* don't print sense info
588 if sense info is nodev */
589#define XS_CTL_RESET 0x00000400 /* reset the device */
590#define XS_CTL_DATA_UIO 0x00000800 /* xs_data points to uio */
591#define XS_CTL_DATA_IN 0x00001000 /* data coming into memory */
592#define XS_CTL_DATA_OUT 0x00002000 /* data going out of memory */
593#define XS_CTL_TARGET 0x00004000 /* target mode operation */
594#define XS_CTL_ESCAPE 0x00008000 /* escape operation */
595#define XS_CTL_URGENT 0x00010000 /* urgent (recovery)
596 operation */
597#define XS_CTL_SIMPLE_TAG 0x00020000 /* use a Simple Tag */
598#define XS_CTL_ORDERED_TAG 0x00040000 /* use an Ordered Tag */
599#define XS_CTL_HEAD_TAG 0x00080000 /* use a Head of Queue Tag */
600#define XS_CTL_THAW_PERIPH 0x00100000 /* thaw periph once enqueued */
601#define XS_CTL_FREEZE_PERIPH 0x00200000 /* freeze periph when done */
602#define XS_CTL_REQSENSE 0x00800000 /* xfer is a request sense */
603
604#define XS_CTL_TAGMASK (XS_CTL_SIMPLE_TAG|XS_CTL_ORDERED_TAG|XS_CTL_HEAD_TAG)
605
606#define XS_CTL_TAGTYPE(xs) ((xs)->xs_control & XS_CTL_TAGMASK)
607
608/*
609 * scsipi_xfer status flags
610 */
611#define XS_STS_DONE 0x00000001 /* scsipi_xfer is done */
612#define XS_STS_PRIVATE 0xf0000000 /* reserved for HBA's use */
613
614/*
615 * This describes matching information for scsipi_inqmatch(). The more things
616 * match, the higher the configuration priority.
617 */
618struct scsipi_inquiry_pattern {
619 u_int8_t type;
620 boolean removable;
621 const char *vendor;
622 const char *product;
623 const char *revision;
624};
625
626/*
627 * This is used to pass information from the high-level configuration code
628 * to the device-specific drivers.
629 */
630struct scsipibus_attach_args {
631 struct scsipi_periph *sa_periph;
632 struct scsipi_inquiry_pattern sa_inqbuf;
633 struct scsipi_inquiry_data *sa_inqptr;
634 union { /* bus-type specific infos */
635 u_int8_t scsi_version; /* SCSI version */
636 } scsipi_info;
637};
638
639/*
640 * this describes a quirk entry
641 */
642struct scsi_quirk_inquiry_pattern {
643 struct scsipi_inquiry_pattern pattern;
644 int quirks;
645};
646
647/*
648 * Default number of retries, used for generic routines.
649 */
650#define SCSIPIRETRIES 4
651
652
653#ifdef _KERNEL
654void scsipi_init(void);
655void scsipi_ioctl_init(void);
656void scsipi_load_verbose(void);
657int scsipi_command(struct scsipi_periph *, struct scsipi_generic *, int,
658 u_char *, int, int, int, struct buf *, int);
659void scsipi_create_completion_thread(void *);
660const void *scsipi_inqmatch(struct scsipi_inquiry_pattern *, const void *,
661 size_t, size_t, int *);
662const char *scsipi_dtype(int);
663int scsipi_execute_xs(struct scsipi_xfer *);
664int scsipi_test_unit_ready(struct scsipi_periph *, int);
665int scsipi_prevent(struct scsipi_periph *, int, int);
666int scsipi_inquire(struct scsipi_periph *,
667 struct scsipi_inquiry_data *, int);
668int scsipi_mode_select(struct scsipi_periph *, int,
669 struct scsi_mode_parameter_header_6 *, int, int, int, int);
670int scsipi_mode_select_big(struct scsipi_periph *, int,
671 struct scsi_mode_parameter_header_10 *, int, int, int, int);
672int scsipi_mode_sense(struct scsipi_periph *, int, int,
673 struct scsi_mode_parameter_header_6 *, int, int, int, int);
674int scsipi_mode_sense_big(struct scsipi_periph *, int, int,
675 struct scsi_mode_parameter_header_10 *, int, int, int, int);
676int scsipi_start(struct scsipi_periph *, int, int);
677void scsipi_done(struct scsipi_xfer *);
678void scsipi_user_done(struct scsipi_xfer *);
679int scsipi_interpret_sense(struct scsipi_xfer *);
680void scsipi_wait_drain(struct scsipi_periph *);
681void scsipi_kill_pending(struct scsipi_periph *);
682struct scsipi_periph *scsipi_alloc_periph(int);
683void scsipi_free_periph(struct scsipi_periph *);
684
685/* Function pointers for scsiverbose module */
686extern int (*scsipi_print_sense)(struct scsipi_xfer *, int);
687extern void (*scsipi_print_sense_data)(struct scsi_sense_data *, int);
688
689int scsipi_print_sense_stub(struct scsipi_xfer *, int);
690void scsipi_print_sense_data_stub(struct scsi_sense_data *, int);
691
692extern int scsi_verbose_loaded;
693
694void scsipi_print_cdb(struct scsipi_generic *cmd);
695int scsipi_thread_call_callback(struct scsipi_channel *,
696 void (*callback)(struct scsipi_channel *, void *),
697 void *);
698void scsipi_async_event(struct scsipi_channel *,
699 scsipi_async_event_t, void *);
700int scsipi_do_ioctl(struct scsipi_periph *, dev_t, u_long, void *,
701 int, struct lwp *);
702
703void scsipi_set_xfer_mode(struct scsipi_channel *, int, int);
704
705int scsipi_channel_init(struct scsipi_channel *);
706void scsipi_channel_shutdown(struct scsipi_channel *);
707
708void scsipi_insert_periph(struct scsipi_channel *,
709 struct scsipi_periph *);
710void scsipi_remove_periph(struct scsipi_channel *,
711 struct scsipi_periph *);
712struct scsipi_periph *scsipi_lookup_periph(struct scsipi_channel *,
713 int, int);
714struct scsipi_periph *scsipi_lookup_periph_locked(struct scsipi_channel *,
715 int, int);
716int scsipi_target_detach(struct scsipi_channel *, int, int, int);
717
718int scsipi_adapter_addref(struct scsipi_adapter *);
719void scsipi_adapter_delref(struct scsipi_adapter *);
720
721void scsipi_channel_freeze(struct scsipi_channel *, int);
722void scsipi_channel_thaw(struct scsipi_channel *, int);
723void scsipi_channel_timed_thaw(void *);
724
725void scsipi_periph_freeze(struct scsipi_periph *, int);
726void scsipi_periph_thaw(struct scsipi_periph *, int);
727void scsipi_periph_timed_thaw(void *);
728
729void scsipi_periph_freeze_locked(struct scsipi_periph *, int);
730void scsipi_periph_thaw_locked(struct scsipi_periph *, int);
731
732int scsipi_sync_period_to_factor(int);
733int scsipi_sync_factor_to_period(int);
734int scsipi_sync_factor_to_freq(int);
735
736void show_scsipi_xs(struct scsipi_xfer *);
737void show_scsipi_cmd(struct scsipi_xfer *);
738void show_mem(u_char *, int);
739#endif /* _KERNEL */
740
741static __inline void
742_lto2b(u_int32_t val, u_int8_t *bytes)
743{
744
745 bytes[0] = (val >> 8) & 0xff;
746 bytes[1] = val & 0xff;
747}
748
749static __inline void
750_lto3b(u_int32_t val, u_int8_t *bytes)
751{
752
753 bytes[0] = (val >> 16) & 0xff;
754 bytes[1] = (val >> 8) & 0xff;
755 bytes[2] = val & 0xff;
756}
757
758static __inline void
759_lto4b(u_int32_t val, u_int8_t *bytes)
760{
761
762 bytes[0] = (val >> 24) & 0xff;
763 bytes[1] = (val >> 16) & 0xff;
764 bytes[2] = (val >> 8) & 0xff;
765 bytes[3] = val & 0xff;
766}
767
768static __inline void
769_lto8b(u_int64_t val, u_int8_t *bytes)
770{
771
772 bytes[0] = (val >> 56) & 0xff;
773 bytes[1] = (val >> 48) & 0xff;
774 bytes[2] = (val >> 40) & 0xff;
775 bytes[3] = (val >> 32) & 0xff;
776 bytes[4] = (val >> 24) & 0xff;
777 bytes[5] = (val >> 16) & 0xff;
778 bytes[6] = (val >> 8) & 0xff;
779 bytes[7] = val & 0xff;
780}
781
782static __inline u_int32_t
783_2btol(const u_int8_t *bytes)
784{
785 u_int32_t rv;
786
787 rv = (bytes[0] << 8) |
788 bytes[1];
789 return (rv);
790}
791
792static __inline u_int32_t
793_3btol(const u_int8_t *bytes)
794{
795 u_int32_t rv;
796
797 rv = (bytes[0] << 16) |
798 (bytes[1] << 8) |
799 bytes[2];
800 return (rv);
801}
802
803static __inline u_int32_t
804_4btol(const u_int8_t *bytes)
805{
806 u_int32_t rv;
807
808 rv = (bytes[0] << 24) |
809 (bytes[1] << 16) |
810 (bytes[2] << 8) |
811 bytes[3];
812 return (rv);
813}
814
815static __inline u_int64_t
816_5btol(const u_int8_t *bytes)
817{
818 u_int64_t rv;
819
820 rv = ((u_int64_t)bytes[0] << 32) |
821 ((u_int64_t)bytes[1] << 24) |
822 ((u_int64_t)bytes[2] << 16) |
823 ((u_int64_t)bytes[3] << 8) |
824 (u_int64_t)bytes[4];
825 return (rv);
826}
827
828static __inline u_int64_t
829_8btol(const u_int8_t *bytes)
830{
831 u_int64_t rv;
832
833 rv = ((u_int64_t)bytes[0] << 56) |
834 ((u_int64_t)bytes[1] << 48) |
835 ((u_int64_t)bytes[2] << 40) |
836 ((u_int64_t)bytes[3] << 32) |
837 ((u_int64_t)bytes[4] << 24) |
838 ((u_int64_t)bytes[5] << 16) |
839 ((u_int64_t)bytes[6] << 8) |
840 (u_int64_t)bytes[7];
841 return (rv);
842}
843
844static __inline void
845_lto2l(u_int32_t val, u_int8_t *bytes)
846{
847
848 bytes[0] = val & 0xff;
849 bytes[1] = (val >> 8) & 0xff;
850}
851
852static __inline void
853_lto3l(u_int32_t val, u_int8_t *bytes)
854{
855
856 bytes[0] = val & 0xff;
857 bytes[1] = (val >> 8) & 0xff;
858 bytes[2] = (val >> 16) & 0xff;
859}
860
861static __inline void
862_lto4l(u_int32_t val, u_int8_t *bytes)
863{
864
865 bytes[0] = val & 0xff;
866 bytes[1] = (val >> 8) & 0xff;
867 bytes[2] = (val >> 16) & 0xff;
868 bytes[3] = (val >> 24) & 0xff;
869}
870
871static __inline u_int32_t
872_2ltol(const u_int8_t *bytes)
873{
874 u_int32_t rv;
875
876 rv = bytes[0] |
877 (bytes[1] << 8);
878 return (rv);
879}
880
881static __inline u_int32_t
882_3ltol(const u_int8_t *bytes)
883{
884 u_int32_t rv;
885
886 rv = bytes[0] |
887 (bytes[1] << 8) |
888 (bytes[2] << 16);
889 return (rv);
890}
891
892static __inline u_int32_t
893_4ltol(const u_int8_t *bytes)
894{
895 u_int32_t rv;
896
897 rv = bytes[0] |
898 (bytes[1] << 8) |
899 (bytes[2] << 16) |
900 (bytes[3] << 24);
901 return (rv);
902}
903
904#endif /* _DEV_SCSIPI_SCSIPICONF_H_ */
905