1 /* @(#)scsi-hpux.c 1.31 04/01/15 Copyright 1997 J. Schilling */
2 #ifndef lint
3 static char __sccsid[] =
4 "@(#)scsi-hpux.c 1.31 04/01/15 Copyright 1997 J. Schilling";
5 #endif
6 /*
7 * Interface for the HP-UX generic SCSI implementation.
8 *
9 * Warning: you may change this source, but if you do that
10 * you need to change the _scg_version and _scg_auth* string below.
11 * You may not return "schily" for an SCG_AUTHOR request anymore.
12 * Choose your name instead of "schily" and make clear that the version
13 * string is related to a modified source.
14 *
15 * Copyright (c) 1997 J. Schilling
16 */
17 /*
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2, or (at your option)
21 * any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License along with
29 * this program; see the file COPYING. If not, write to the Free Software
30 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
31 */
32
33 #undef sense
34 #include <sys/scsi.h>
35
36 /*
37 * Warning: you may change this source, but if you do that
38 * you need to change the _scg_version and _scg_auth* string below.
39 * You may not return "schily" for an SCG_AUTHOR request anymore.
40 * Choose your name instead of "schily" and make clear that the version
41 * string is related to a modified source.
42 */
43 LOCAL char _scg_trans_version[] = "scsi-hpux.c-1.31"; /* The version for this transport*/
44
45 #define MAX_SCG 16 /* Max # of SCSI controllers */
46 #define MAX_TGT 16
47 #define MAX_LUN 8
48
49 struct scg_local {
50 short scgfiles[MAX_SCG][MAX_TGT][MAX_LUN];
51 };
52 #define scglocal(p) ((struct scg_local *)((p)->local))
53
54 #ifdef SCSI_MAXPHYS
55 # define MAX_DMA_HP SCSI_MAXPHYS
56 #else
57 # define MAX_DMA_HP (63*1024) /* Check if this is not too big */
58 #endif
59
60
61 /*
62 * Return version information for the low level SCSI transport code.
63 * This has been introduced to make it easier to trace down problems
64 * in applications.
65 */
66 LOCAL char *
scgo_version(scgp,what)67 scgo_version(scgp, what)
68 SCSI *scgp;
69 int what;
70 {
71 if (scgp != (SCSI *)0) {
72 switch (what) {
73
74 case SCG_VERSION:
75 return (_scg_trans_version);
76 /*
77 * If you changed this source, you are not allowed to
78 * return "schily" for the SCG_AUTHOR request.
79 */
80 case SCG_AUTHOR:
81 return (_scg_auth_schily);
82 case SCG_SCCS_ID:
83 return (__sccsid);
84 }
85 }
86 return ((char *)0);
87 }
88
89 LOCAL int
scgo_help(scgp,f)90 scgo_help(scgp, f)
91 SCSI *scgp;
92 FILE *f;
93 {
94 __scg_help(f, "SIOC", "Generic SCSI",
95 "", "bus,target,lun", "1,2,0", TRUE, FALSE);
96 return (0);
97 }
98
99 LOCAL int
scgo_open(scgp,device)100 scgo_open(scgp, device)
101 SCSI *scgp;
102 char *device;
103 {
104 int busno = scg_scsibus(scgp);
105 int tgt = scg_target(scgp);
106 int tlun = scg_lun(scgp);
107 register int f;
108 register int b;
109 register int t;
110 register int l;
111 register int nopen = 0;
112 char devname[64];
113
114 if (busno >= MAX_SCG || tgt >= MAX_TGT || tlun >= MAX_LUN) {
115 errno = EINVAL;
116 if (scgp->errstr)
117 js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
118 "Illegal value for busno, target or lun '%d,%d,%d'",
119 busno, tgt, tlun);
120 return (-1);
121 }
122
123 if ((device != NULL && *device != '\0') || (busno == -2 && tgt == -2)) {
124 errno = EINVAL;
125 if (scgp->errstr)
126 js_snprintf(scgp->errstr, SCSI_ERRSTR_SIZE,
127 "Open by 'devname' not supported on this OS");
128 return (-1);
129 }
130
131 if (scgp->local == NULL) {
132 scgp->local = malloc(sizeof (struct scg_local));
133 if (scgp->local == NULL)
134 return (0);
135
136 for (b = 0; b < MAX_SCG; b++) {
137 for (t = 0; t < MAX_TGT; t++) {
138 for (l = 0; l < MAX_LUN; l++)
139 scglocal(scgp)->scgfiles[b][t][l] = (short)-1;
140 }
141 }
142 }
143
144 if (busno >= 0 && tgt >= 0 && tlun >= 0) {
145
146 js_snprintf(devname, sizeof (devname),
147 "/dev/rscsi/c%xt%xl%x", busno, tgt, tlun);
148 f = open(devname, O_RDWR);
149 if (f < 0)
150 return (-1);
151 scglocal(scgp)->scgfiles[busno][tgt][tlun] = f;
152 return (1);
153 } else {
154 for (b = 0; b < MAX_SCG; b++) {
155 for (t = 0; t < MAX_TGT; t++) {
156 /* for (l = 0; l < MAX_LUN; l++) {*/
157 for (l = 0; l < 1; l++) {
158 js_snprintf(devname, sizeof (devname),
159 "/dev/rscsi/c%xt%xl%x", b, t, l);
160 /*error("name: '%s'\n", devname);*/
161 f = open(devname, O_RDWR);
162 if (f >= 0) {
163 scglocal(scgp)->scgfiles[b][t][l] = (short)f;
164 nopen++;
165 } else if (scgp->debug > 0) {
166 errmsg("open '%s'\n", devname);
167 }
168 }
169 }
170 }
171 }
172 return (nopen);
173 }
174
175 LOCAL int
scgo_close(scgp)176 scgo_close(scgp)
177 SCSI *scgp;
178 {
179 register int f;
180 register int b;
181 register int t;
182 register int l;
183
184 if (scgp->local == NULL)
185 return (-1);
186
187 for (b = 0; b < MAX_SCG; b++) {
188 for (t = 0; t < MAX_TGT; t++) {
189 for (l = 0; l < MAX_LUN; l++) {
190 f = scglocal(scgp)->scgfiles[b][t][l];
191 if (f >= 0)
192 close(f);
193 scglocal(scgp)->scgfiles[b][t][l] = (short)-1;
194 }
195 }
196 }
197 return (0);
198 }
199
200 LOCAL long
scgo_maxdma(scgp,amt)201 scgo_maxdma(scgp, amt)
202 SCSI *scgp;
203 long amt;
204 {
205 return (MAX_DMA_HP);
206 }
207
208 LOCAL void *
scgo_getbuf(scgp,amt)209 scgo_getbuf(scgp, amt)
210 SCSI *scgp;
211 long amt;
212 {
213 if (scgp->debug > 0) {
214 js_fprintf((FILE *)scgp->errfile,
215 "scgo_getbuf: %ld bytes\n", amt);
216 }
217 scgp->bufbase = valloc((size_t)(amt));
218 return (scgp->bufbase);
219 }
220
221 LOCAL void
scgo_freebuf(scgp)222 scgo_freebuf(scgp)
223 SCSI *scgp;
224 {
225 if (scgp->bufbase)
226 free(scgp->bufbase);
227 scgp->bufbase = NULL;
228 }
229
230 LOCAL BOOL
scgo_havebus(scgp,busno)231 scgo_havebus(scgp, busno)
232 SCSI *scgp;
233 int busno;
234 {
235 register int t;
236 register int l;
237
238 if (busno < 0 || busno >= MAX_SCG)
239 return (FALSE);
240
241 if (scgp->local == NULL)
242 return (FALSE);
243
244 for (t = 0; t < MAX_TGT; t++) {
245 for (l = 0; l < MAX_LUN; l++)
246 if (scglocal(scgp)->scgfiles[busno][t][l] >= 0)
247 return (TRUE);
248 }
249 return (FALSE);
250 }
251
252 LOCAL int
scgo_fileno(scgp,busno,tgt,tlun)253 scgo_fileno(scgp, busno, tgt, tlun)
254 SCSI *scgp;
255 int busno;
256 int tgt;
257 int tlun;
258 {
259 if (busno < 0 || busno >= MAX_SCG ||
260 tgt < 0 || tgt >= MAX_TGT ||
261 tlun < 0 || tlun >= MAX_LUN)
262 return (-1);
263
264 if (scgp->local == NULL)
265 return (-1);
266
267 return ((int)scglocal(scgp)->scgfiles[busno][tgt][tlun]);
268 }
269
270 LOCAL int
scgo_initiator_id(scgp)271 scgo_initiator_id(scgp)
272 SCSI *scgp;
273 {
274 return (-1);
275 }
276
277 LOCAL int
scgo_isatapi(scgp)278 scgo_isatapi(scgp)
279 SCSI *scgp;
280 {
281 return (FALSE);
282 }
283
284 LOCAL int
scgo_reset(scgp,what)285 scgo_reset(scgp, what)
286 SCSI *scgp;
287 int what;
288 {
289 if (what == SCG_RESET_NOP)
290 return (0);
291 if (what != SCG_RESET_BUS) {
292 errno = EINVAL;
293 return (-1);
294 }
295 return (ioctl(scgp->fd, SIOC_RESET_BUS, 0));
296 }
297
298 LOCAL int
scgo_send(scgp)299 scgo_send(scgp)
300 SCSI *scgp;
301 {
302 struct scg_cmd *sp = scgp->scmd;
303 int ret;
304 int flags;
305 struct sctl_io sctl_io;
306
307 if ((scgp->fd < 0) || (sp->cdb_len > sizeof (sctl_io.cdb))) {
308 sp->error = SCG_FATAL;
309 return (0);
310 }
311
312 fillbytes((caddr_t)&sctl_io, sizeof (sctl_io), '\0');
313
314 flags = 0;
315 /* flags = SCTL_INIT_WDTR|SCTL_INIT_SDTR;*/
316 if (sp->flags & SCG_RECV_DATA)
317 flags |= SCTL_READ;
318 if ((sp->flags & SCG_DISRE_ENA) == 0)
319 flags |= SCTL_NO_ATN;
320
321 sctl_io.flags = flags;
322
323 movebytes(&sp->cdb, sctl_io.cdb, sp->cdb_len);
324 sctl_io.cdb_length = sp->cdb_len;
325
326 sctl_io.data_length = sp->size;
327 sctl_io.data = sp->addr;
328
329 if (sp->timeout == 0)
330 sctl_io.max_msecs = 0;
331 else
332 sctl_io.max_msecs = (sp->timeout * 1000) + 500;
333
334 errno = 0;
335 sp->error = SCG_NO_ERROR;
336 sp->sense_count = 0;
337 sp->u_scb.cmd_scb[0] = 0;
338 sp->resid = 0;
339
340 ret = ioctl(scgp->fd, SIOC_IO, &sctl_io);
341 if (ret < 0) {
342 sp->error = SCG_FATAL;
343 sp->ux_errno = errno;
344 return (ret);
345 }
346 if (scgp->debug > 0)
347 error("cdb_status: %X, size: %d xfer: %d\n", sctl_io.cdb_status, sctl_io.data_length, sctl_io.data_xfer);
348
349 if (sctl_io.cdb_status == 0 || sctl_io.cdb_status == 0x02)
350 sp->resid = sp->size - sctl_io.data_xfer;
351
352 if (sctl_io.cdb_status & SCTL_SELECT_TIMEOUT ||
353 sctl_io.cdb_status & SCTL_INVALID_REQUEST) {
354 sp->error = SCG_FATAL;
355 } else if (sctl_io.cdb_status & SCTL_INCOMPLETE) {
356 sp->error = SCG_TIMEOUT;
357 } else if (sctl_io.cdb_status > 0xFF) {
358 errmsgno(EX_BAD, "SCSI problems: cdb_status: %X\n", sctl_io.cdb_status);
359
360 } else if ((sctl_io.cdb_status & 0xFF) != 0) {
361 sp->error = SCG_RETRYABLE;
362 sp->ux_errno = EIO;
363
364 sp->u_scb.cmd_scb[0] = sctl_io.cdb_status & 0xFF;
365
366 sp->sense_count = sctl_io.sense_xfer;
367 if (sp->sense_count > SCG_MAX_SENSE)
368 sp->sense_count = SCG_MAX_SENSE;
369
370 if (sctl_io.sense_status != S_GOOD) {
371 sp->sense_count = 0;
372 } else {
373 movebytes(sctl_io.sense, sp->u_sense.cmd_sense, sp->sense_count);
374 }
375
376 }
377 return (ret);
378 }
379 #define sense u_sense.Sense
380