Commit | Line | Data |
---|---|---|
198f077a | 1 | /* ts.c 4.23 82/02/03 */ |
9bad5ea5 | 2 | |
66b4fb09 | 3 | #include "ts.h" |
9bad5ea5 BJ |
4 | #if NTS > 0 |
5 | /* | |
6 | * TS11 tape driver | |
30a7bcbf BJ |
7 | * |
8 | * TODO: | |
a870f835 | 9 | * write dump code |
9bad5ea5 | 10 | */ |
9bad5ea5 BJ |
11 | #include "../h/param.h" |
12 | #include "../h/systm.h" | |
13 | #include "../h/buf.h" | |
9bad5ea5 | 14 | #include "../h/dir.h" |
30a7bcbf | 15 | #include "../h/conf.h" |
9bad5ea5 | 16 | #include "../h/user.h" |
30a7bcbf | 17 | #include "../h/file.h" |
9bad5ea5 | 18 | #include "../h/map.h" |
30a7bcbf | 19 | #include "../h/pte.h" |
e1b765e1 | 20 | #include "../h/vm.h" |
30a7bcbf BJ |
21 | #include "../h/ubareg.h" |
22 | #include "../h/ubavar.h" | |
23 | #include "../h/mtio.h" | |
24 | #include "../h/ioctl.h" | |
25 | #include "../h/cmap.h" | |
26 | #include "../h/cpu.h" | |
27 | ||
28 | #include "../h/tsreg.h" | |
29 | ||
30 | /* | |
31 | * There is a ctsbuf per tape controller. | |
32 | * It is used as the token to pass to the internal routines | |
33 | * to execute tape ioctls. | |
34 | * In particular, when the tape is rewinding on close we release | |
35 | * the user process but any further attempts to use the tape drive | |
36 | * before the rewind completes will hang waiting for ctsbuf. | |
37 | */ | |
38 | struct buf ctsbuf[NTS]; | |
39 | ||
40 | /* | |
41 | * Raw tape operations use rtsbuf. The driver | |
42 | * notices when rtsbuf is being used and allows the user | |
43 | * program to continue after errors and read records | |
44 | * not of the standard length (BSIZE). | |
45 | */ | |
46 | struct buf rtsbuf[NTS]; | |
47 | ||
48 | /* | |
49 | * Driver unibus interface routines and variables. | |
50 | */ | |
51 | int tsprobe(), tsslave(), tsattach(), tsdgo(), tsintr(); | |
52 | struct uba_ctlr *tsminfo[NTS]; | |
53 | struct uba_device *tsdinfo[NTS]; | |
a870f835 | 54 | struct buf tsutab[NTS]; |
30a7bcbf BJ |
55 | u_short tsstd[] = { 0772520, 0 }; |
56 | /*** PROBABLY DON'T NEED ALL THESE SINCE CONTROLLER == DRIVE ***/ | |
57 | struct uba_driver zsdriver = | |
30e0abb3 | 58 | { tsprobe, tsslave, tsattach, tsdgo, tsstd, "ts", tsdinfo, "zs", tsminfo, 0 }; |
30a7bcbf BJ |
59 | |
60 | /* bits in minor device */ | |
61 | #define TSUNIT(dev) (minor(dev)&03) | |
62 | #define T_NOREWIND 04 | |
9bad5ea5 | 63 | |
30a7bcbf | 64 | #define INF (daddr_t)1000000L |
9bad5ea5 | 65 | |
30a7bcbf BJ |
66 | /* |
67 | * Software state per tape transport. | |
68 | * Also contains hardware state in message packets. | |
69 | * | |
70 | * 1. A tape drive is a unique-open device; we refuse opens when it is already. | |
71 | * 2. We keep track of the current position on a block tape and seek | |
72 | * before operations by forward/back spacing if necessary. | |
73 | * 3. We remember if the last operation was a write on a tape, so if a tape | |
74 | * is open read write and the last thing done is a write we can | |
75 | * write a standard end of tape mark (two eofs). | |
76 | * 4. We remember the status registers after the last command, using | |
77 | * then internally and returning them to the SENSE ioctl. | |
78 | */ | |
79 | struct ts_softc { | |
80 | char sc_openf; /* lock against multiple opens */ | |
81 | char sc_lastiow; /* last op was a write */ | |
30e0abb3 | 82 | short sc_resid; /* copy of last bc */ |
30a7bcbf BJ |
83 | daddr_t sc_blkno; /* block number, for block device tape */ |
84 | daddr_t sc_nxrec; /* position of end of tape, if known */ | |
a870f835 BJ |
85 | struct ts_cmd sc_cmd; /* the command packet */ |
86 | struct ts_sts sc_sts; /* status packet, for returned status */ | |
87 | struct ts_char sc_char; /* characteristics packet */ | |
88 | struct ts_softc *sc_ubaddr; /* Unibus address of ts_softc structure */ | |
198f077a | 89 | u_short sc_uba; /* Unibus addr of cmd pkt for tsdb */ |
a870f835 | 90 | short sc_mapped; /* is ts_sfotc mapped in Unibus space? */ |
30a7bcbf BJ |
91 | } ts_softc[NTS]; |
92 | ||
30a7bcbf BJ |
93 | /* |
94 | * States for um->um_tab.b_active, the per controller state flag. | |
95 | * This is used to sequence control in the driver. | |
96 | */ | |
97 | #define SSEEK 1 /* seeking */ | |
98 | #define SIO 2 /* doing seq i/o */ | |
99 | #define SCOM 3 /* sending control command */ | |
100 | #define SREW 4 /* sending a drive rewind */ | |
101 | ||
102 | /* | |
103 | * Determine if there is a controller for | |
104 | * a ts at address reg. Our goal is to make the | |
105 | * device interrupt. | |
106 | */ | |
b620b354 | 107 | /*ARGSUSED*/ |
30a7bcbf BJ |
108 | tsprobe(reg) |
109 | caddr_t reg; | |
110 | { | |
111 | register int br, cvec; /* must be r11,r10; value-result */ | |
112 | ||
113 | #ifdef lint | |
114 | br = 0; cvec = br; br = cvec; | |
89b8a44c | 115 | tsintr(0); |
30a7bcbf | 116 | #endif |
a870f835 BJ |
117 | ((struct tsdevice *)reg)->tssr = 0; |
118 | DELAY(100); | |
119 | if ((((struct tsdevice *)reg)->tssr & TS_NBA) == 0) | |
120 | return(0); | |
121 | /* IT'S TOO HARD TO MAKE THIS THING INTERRUPT JUST TO FIND ITS VECTOR */ | |
122 | cvec = ((unsigned)reg) & 07 ? 0260 : 0224; | |
30a7bcbf | 123 | br = 0x15; |
e0d5014a | 124 | return (1); |
30a7bcbf BJ |
125 | } |
126 | ||
127 | /* | |
128 | * TS11 only supports one drive per controller; | |
129 | * check for ui_slave == 0. | |
130 | * | |
131 | * DO WE REALLY NEED THIS ROUTINE??? | |
132 | */ | |
133 | /*ARGSUSED*/ | |
134 | tsslave(ui, reg) | |
135 | struct uba_device *ui; | |
136 | caddr_t reg; | |
137 | { | |
138 | ||
139 | if (ui->ui_slave) /* non-zero slave not allowed */ | |
140 | return(0); | |
141 | return (1); | |
142 | } | |
143 | ||
144 | /* | |
145 | * Record attachment of the unit to the controller. | |
146 | * | |
147 | * SHOULD THIS ROUTINE DO ANYTHING??? | |
148 | */ | |
149 | /*ARGSUSED*/ | |
150 | tsattach(ui) | |
151 | struct uba_device *ui; | |
152 | { | |
153 | ||
154 | } | |
155 | ||
156 | /* | |
157 | * Open the device. Tapes are unique open | |
158 | * devices, so we refuse if it is already open. | |
159 | * We also check that a tape is available, and | |
160 | * don't block waiting here; if you want to wait | |
161 | * for a tape you should timeout in user code. | |
162 | */ | |
9bad5ea5 | 163 | tsopen(dev, flag) |
30a7bcbf BJ |
164 | dev_t dev; |
165 | int flag; | |
9bad5ea5 | 166 | { |
30a7bcbf BJ |
167 | register int tsunit; |
168 | register struct uba_device *ui; | |
169 | register struct ts_softc *sc; | |
9bad5ea5 | 170 | |
30a7bcbf BJ |
171 | tsunit = TSUNIT(dev); |
172 | if (tsunit>=NTS || (sc = &ts_softc[tsunit])->sc_openf || | |
173 | (ui = tsdinfo[tsunit]) == 0 || ui->ui_alive == 0) { | |
9bad5ea5 BJ |
174 | u.u_error = ENXIO; |
175 | return; | |
176 | } | |
30a7bcbf | 177 | if (tsinit(tsunit)) { |
9bad5ea5 BJ |
178 | u.u_error = ENXIO; |
179 | return; | |
180 | } | |
30a7bcbf | 181 | tscommand(dev, TS_SENSE, 1); |
9f1f6818 BJ |
182 | if ((sc->sc_sts.s_xs0&TS_ONL) == 0) { |
183 | uprintf("ts%d: not online\n", tsunit); | |
184 | u.u_error = EIO; | |
185 | return; | |
186 | } | |
4cb88cd4 | 187 | if ((flag&(FREAD|FWRITE)) == FWRITE && (sc->sc_sts.s_xs0&TS_WLK)) { |
9f1f6818 | 188 | uprintf("ts%d: no write ring\n", tsunit); |
30a7bcbf BJ |
189 | u.u_error = EIO; |
190 | return; | |
9bad5ea5 | 191 | } |
30a7bcbf BJ |
192 | sc->sc_openf = 1; |
193 | sc->sc_blkno = (daddr_t)0; | |
194 | sc->sc_nxrec = INF; | |
195 | sc->sc_lastiow = 0; | |
9bad5ea5 BJ |
196 | } |
197 | ||
30a7bcbf BJ |
198 | /* |
199 | * Close tape device. | |
200 | * | |
201 | * If tape was open for writing or last operation was | |
202 | * a write, then write two EOF's and backspace over the last one. | |
203 | * Unless this is a non-rewinding special file, rewind the tape. | |
204 | * Make the tape available to others. | |
205 | */ | |
9bad5ea5 | 206 | tsclose(dev, flag) |
30a7bcbf BJ |
207 | register dev_t dev; |
208 | register flag; | |
9bad5ea5 | 209 | { |
30a7bcbf BJ |
210 | register struct ts_softc *sc = &ts_softc[TSUNIT(dev)]; |
211 | ||
212 | if (flag == FWRITE || (flag&FWRITE) && sc->sc_lastiow) { | |
213 | tscommand(dev, TS_WEOF, 1); | |
214 | tscommand(dev, TS_WEOF, 1); | |
215 | tscommand(dev, TS_SREV, 1); | |
216 | } | |
217 | if ((minor(dev)&T_NOREWIND) == 0) | |
218 | /* | |
219 | * 0 count means don't hang waiting for rewind complete | |
220 | * rather ctsbuf stays busy until the operation completes | |
221 | * preventing further opens from completing by | |
222 | * preventing a TS_SENSE from completing. | |
223 | */ | |
224 | tscommand(dev, TS_REW, 0); | |
225 | sc->sc_openf = 0; | |
226 | } | |
9bad5ea5 | 227 | |
30a7bcbf BJ |
228 | /* |
229 | * Initialize the TS11. Set up Unibus mapping for command | |
230 | * packets and set device characteristics. | |
231 | */ | |
232 | tsinit(unit) | |
233 | register int unit; | |
234 | { | |
235 | register struct ts_softc *sc = &ts_softc[unit]; | |
236 | register struct uba_ctlr *um = tsminfo[unit]; | |
a870f835 | 237 | register struct tsdevice *addr = (struct tsdevice *)um->um_addr; |
30a7bcbf BJ |
238 | register int i; |
239 | ||
240 | /* | |
241 | * Map the command and message packets into Unibus | |
242 | * address space. We do all the command and message | |
243 | * packets at once to minimize the amount of Unibus | |
244 | * mapping necessary. | |
245 | */ | |
a870f835 BJ |
246 | if (sc->sc_mapped == 0) { |
247 | ctsbuf[unit].b_un.b_addr = (caddr_t)sc; | |
248 | ctsbuf[unit].b_bcount = sizeof(*sc); | |
30a7bcbf BJ |
249 | i = ubasetup(um->um_ubanum, &ctsbuf[unit], 0); |
250 | i &= 0777777; | |
a870f835 BJ |
251 | sc->sc_ubaddr = (struct ts_softc *)i; |
252 | sc->sc_mapped++; | |
30a7bcbf BJ |
253 | } |
254 | /* | |
255 | * Now initialize the TS11 controller. | |
256 | * Set the characteristics. | |
257 | */ | |
691a71cc | 258 | if (addr->tssr & (TS_NBA|TS_OFL)) { |
30a7bcbf BJ |
259 | addr->tssr = 0; /* subsystem initialize */ |
260 | tswait(addr); | |
a870f835 | 261 | i = (int)&sc->sc_ubaddr->sc_cmd; /* Unibus addr of cmd */ |
30a7bcbf | 262 | sc->sc_uba = (u_short)(i + ((i>>16)&3)); |
a870f835 | 263 | sc->sc_char.char_addr = (int)&sc->sc_ubaddr->sc_sts; |
30a7bcbf BJ |
264 | sc->sc_char.char_size = sizeof(struct ts_sts); |
265 | sc->sc_char.char_mode = TS_ESS; | |
266 | sc->sc_cmd.c_cmd = TS_ACK | TS_SETCHR; | |
a870f835 | 267 | i = (int)&sc->sc_ubaddr->sc_char; |
30e0abb3 BJ |
268 | sc->sc_cmd.c_loba = i; |
269 | sc->sc_cmd.c_hiba = (i>>16)&3; | |
30a7bcbf BJ |
270 | sc->sc_cmd.c_size = sizeof(struct ts_char); |
271 | addr->tsdb = sc->sc_uba; | |
272 | tswait(addr); | |
30e0abb3 BJ |
273 | if (addr->tssr & TS_NBA) |
274 | return(1); | |
9bad5ea5 | 275 | } |
30a7bcbf | 276 | return(0); |
9bad5ea5 BJ |
277 | } |
278 | ||
30a7bcbf BJ |
279 | /* |
280 | * Execute a command on the tape drive | |
281 | * a specified number of times. | |
282 | */ | |
283 | tscommand(dev, com, count) | |
284 | dev_t dev; | |
285 | int com, count; | |
9bad5ea5 BJ |
286 | { |
287 | register struct buf *bp; | |
2311123d | 288 | register int s; |
9bad5ea5 | 289 | |
30a7bcbf | 290 | bp = &ctsbuf[TSUNIT(dev)]; |
2311123d | 291 | s = spl5(); |
30a7bcbf BJ |
292 | while (bp->b_flags&B_BUSY) { |
293 | /* | |
294 | * This special check is because B_BUSY never | |
295 | * gets cleared in the non-waiting rewind case. | |
296 | */ | |
297 | if (bp->b_repcnt == 0 && (bp->b_flags&B_DONE)) | |
298 | break; | |
9bad5ea5 BJ |
299 | bp->b_flags |= B_WANTED; |
300 | sleep((caddr_t)bp, PRIBIO); | |
301 | } | |
9bad5ea5 | 302 | bp->b_flags = B_BUSY|B_READ; |
2311123d | 303 | splx(s); |
30a7bcbf BJ |
304 | bp->b_dev = dev; |
305 | bp->b_repcnt = count; | |
306 | bp->b_command = com; | |
307 | bp->b_blkno = 0; | |
9bad5ea5 | 308 | tsstrategy(bp); |
30a7bcbf BJ |
309 | /* |
310 | * In case of rewind from close, don't wait. | |
311 | * This is the only case where count can be 0. | |
312 | */ | |
313 | if (count == 0) | |
314 | return; | |
9bad5ea5 | 315 | iowait(bp); |
30a7bcbf | 316 | if (bp->b_flags&B_WANTED) |
9bad5ea5 | 317 | wakeup((caddr_t)bp); |
30a7bcbf | 318 | bp->b_flags &= B_ERROR; |
9bad5ea5 BJ |
319 | } |
320 | ||
30a7bcbf BJ |
321 | /* |
322 | * Queue a tape operation. | |
323 | */ | |
9bad5ea5 | 324 | tsstrategy(bp) |
30a7bcbf | 325 | register struct buf *bp; |
9bad5ea5 | 326 | { |
30a7bcbf BJ |
327 | int tsunit = TSUNIT(bp->b_dev); |
328 | register struct uba_ctlr *um; | |
30e0abb3 | 329 | register struct buf *dp; |
2311123d | 330 | register int s; |
30a7bcbf BJ |
331 | |
332 | /* | |
333 | * Put transfer at end of controller queue | |
334 | */ | |
9bad5ea5 | 335 | bp->av_forw = NULL; |
30a7bcbf | 336 | um = tsdinfo[tsunit]->ui_mi; |
2311123d | 337 | s = spl5(); |
a870f835 | 338 | dp = &tsutab[tsunit]; |
30e0abb3 BJ |
339 | if (dp->b_actf == NULL) |
340 | dp->b_actf = bp; | |
9bad5ea5 | 341 | else |
30e0abb3 BJ |
342 | dp->b_actl->av_forw = bp; |
343 | dp->b_actl = bp; | |
344 | um->um_tab.b_actf = um->um_tab.b_actl = dp; | |
30a7bcbf BJ |
345 | /* |
346 | * If the controller is not busy, get | |
347 | * it going. | |
348 | */ | |
349 | if (um->um_tab.b_active == 0) | |
350 | tsstart(um); | |
2311123d | 351 | splx(s); |
9bad5ea5 BJ |
352 | } |
353 | ||
30a7bcbf BJ |
354 | /* |
355 | * Start activity on a ts controller. | |
356 | */ | |
357 | tsstart(um) | |
358 | register struct uba_ctlr *um; | |
9bad5ea5 BJ |
359 | { |
360 | register struct buf *bp; | |
a870f835 | 361 | register struct tsdevice *addr = (struct tsdevice *)um->um_addr; |
30a7bcbf BJ |
362 | register struct ts_softc *sc; |
363 | register struct ts_cmd *tc; | |
364 | register struct uba_device *ui; | |
365 | int tsunit, cmd; | |
9bad5ea5 BJ |
366 | daddr_t blkno; |
367 | ||
30a7bcbf BJ |
368 | /* |
369 | * Start the controller if there is something for it to do. | |
370 | */ | |
371 | loop: | |
30e0abb3 | 372 | if ((bp = um->um_tab.b_actf->b_actf) == NULL) |
9bad5ea5 | 373 | return; |
30a7bcbf BJ |
374 | tsunit = TSUNIT(bp->b_dev); |
375 | ui = tsdinfo[tsunit]; | |
376 | sc = &ts_softc[tsunit]; | |
377 | tc = &sc->sc_cmd; | |
378 | /* | |
379 | * Default is that last command was NOT a write command; | |
380 | * if we do a write command we will notice this in tsintr(). | |
381 | */ | |
b56f55c7 | 382 | sc->sc_lastiow = 0; |
30a7bcbf BJ |
383 | if (sc->sc_openf < 0 || (addr->tssr&TS_OFL)) { |
384 | /* | |
385 | * Have had a hard error on a non-raw tape | |
386 | * or the tape unit is now unavailable | |
387 | * (e.g. taken off line). | |
388 | */ | |
389 | bp->b_flags |= B_ERROR; | |
390 | goto next; | |
391 | } | |
392 | if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) { | |
393 | /* | |
394 | * Execute control operation with the specified count. | |
395 | */ | |
396 | um->um_tab.b_active = | |
397 | bp->b_command == TS_REW ? SREW : SCOM; | |
398 | tc->c_repcnt = bp->b_repcnt; | |
399 | goto dobpcmd; | |
400 | } | |
401 | /* | |
402 | * The following checks handle boundary cases for operation | |
403 | * on non-raw tapes. On raw tapes the initialization of | |
404 | * sc->sc_nxrec by tsphys causes them to be skipped normally | |
405 | * (except in the case of retries). | |
406 | */ | |
407 | if (dbtofsb(bp->b_blkno) > sc->sc_nxrec) { | |
408 | /* | |
409 | * Can't read past known end-of-file. | |
410 | */ | |
411 | bp->b_flags |= B_ERROR; | |
412 | bp->b_error = ENXIO; | |
413 | goto next; | |
414 | } | |
415 | if (dbtofsb(bp->b_blkno) == sc->sc_nxrec && | |
416 | bp->b_flags&B_READ) { | |
417 | /* | |
418 | * Reading at end of file returns 0 bytes. | |
419 | */ | |
420 | bp->b_resid = bp->b_bcount; | |
421 | clrbuf(bp); | |
422 | goto next; | |
423 | } | |
424 | if ((bp->b_flags&B_READ) == 0) | |
425 | /* | |
426 | * Writing sets EOF | |
427 | */ | |
428 | sc->sc_nxrec = dbtofsb(bp->b_blkno) + 1; | |
429 | /* | |
430 | * If the data transfer command is in the correct place, | |
431 | * set up all the registers except the csr, and give | |
432 | * control over to the UNIBUS adapter routines, to | |
433 | * wait for resources to start the i/o. | |
434 | */ | |
435 | if ((blkno = sc->sc_blkno) == dbtofsb(bp->b_blkno)) { | |
436 | tc->c_size = bp->b_bcount; | |
437 | if ((bp->b_flags&B_READ) == 0) | |
438 | cmd = TS_WCOM; | |
9bad5ea5 | 439 | else |
30a7bcbf BJ |
440 | cmd = TS_RCOM; |
441 | if (um->um_tab.b_errcnt) | |
442 | cmd |= TS_RETRY; | |
443 | um->um_tab.b_active = SIO; | |
30e0abb3 | 444 | tc->c_cmd = TS_ACK | TS_CVC | TS_IE | cmd; |
30a7bcbf BJ |
445 | (void) ubago(ui); |
446 | return; | |
447 | } | |
448 | /* | |
449 | * Tape positioned incorrectly; | |
450 | * set to seek forwards or backwards to the correct spot. | |
451 | * This happens for raw tapes only on error retries. | |
452 | */ | |
453 | um->um_tab.b_active = SSEEK; | |
454 | if (blkno < dbtofsb(bp->b_blkno)) { | |
455 | bp->b_command = TS_SFORW; | |
456 | tc->c_repcnt = dbtofsb(bp->b_blkno) - blkno; | |
9bad5ea5 | 457 | } else { |
30a7bcbf BJ |
458 | bp->b_command = TS_SREV; |
459 | tc->c_repcnt = blkno - dbtofsb(bp->b_blkno); | |
9bad5ea5 | 460 | } |
30a7bcbf BJ |
461 | dobpcmd: |
462 | /* | |
463 | * Do the command in bp. | |
464 | */ | |
30e0abb3 | 465 | tc->c_cmd = TS_ACK | TS_CVC | TS_IE | bp->b_command; |
30a7bcbf | 466 | addr->tsdb = sc->sc_uba; |
9bad5ea5 BJ |
467 | return; |
468 | ||
30a7bcbf BJ |
469 | next: |
470 | /* | |
471 | * Done with this operation due to error or | |
472 | * the fact that it doesn't do anything. | |
473 | * Release UBA resources (if any), dequeue | |
474 | * the transfer and continue processing this slave. | |
475 | */ | |
476 | if (um->um_ubinfo) | |
477 | ubadone(um); | |
478 | um->um_tab.b_errcnt = 0; | |
30e0abb3 | 479 | um->um_tab.b_actf->b_actf = bp->av_forw; |
9bad5ea5 BJ |
480 | iodone(bp); |
481 | goto loop; | |
482 | } | |
483 | ||
30a7bcbf BJ |
484 | /* |
485 | * The UNIBUS resources we needed have been | |
486 | * allocated to us; start the device. | |
487 | */ | |
488 | tsdgo(um) | |
489 | register struct uba_ctlr *um; | |
490 | { | |
a870f835 | 491 | register struct tsdevice *addr = (struct tsdevice *)um->um_addr; |
30a7bcbf | 492 | register struct ts_softc *sc = &ts_softc[um->um_ctlr]; |
30e0abb3 | 493 | register int i; |
30a7bcbf | 494 | |
30e0abb3 | 495 | i = um->um_ubinfo & 0777777; |
30e0abb3 BJ |
496 | sc->sc_cmd.c_loba = i; |
497 | sc->sc_cmd.c_hiba = (i>>16)&3; | |
30a7bcbf BJ |
498 | addr->tsdb = sc->sc_uba; |
499 | } | |
500 | ||
501 | /* | |
502 | * Ts interrupt routine. | |
503 | */ | |
504 | /*ARGSUSED*/ | |
505 | tsintr(ts11) | |
506 | int ts11; | |
9bad5ea5 BJ |
507 | { |
508 | register struct buf *bp; | |
30a7bcbf | 509 | register struct uba_ctlr *um = tsminfo[ts11]; |
a870f835 | 510 | register struct tsdevice *addr; |
30a7bcbf BJ |
511 | register struct ts_softc *sc; |
512 | int tsunit; | |
513 | register state; | |
9bad5ea5 | 514 | |
30e0abb3 | 515 | if ((bp = um->um_tab.b_actf->b_actf) == NULL) |
9bad5ea5 | 516 | return; |
30a7bcbf | 517 | tsunit = TSUNIT(bp->b_dev); |
a870f835 | 518 | addr = (struct tsdevice *)tsdinfo[tsunit]->ui_addr; |
30a7bcbf BJ |
519 | /* |
520 | * If last command was a rewind, and tape is still | |
521 | * rewinding, wait for the rewind complete interrupt. | |
522 | * | |
523 | * SHOULD NEVER GET AN INTERRUPT IN THIS STATE. | |
524 | */ | |
525 | if (um->um_tab.b_active == SREW) { | |
526 | um->um_tab.b_active = SCOM; | |
527 | if ((addr->tssr&TS_SSR) == 0) | |
528 | return; | |
529 | } | |
530 | /* | |
531 | * An operation completed... record status | |
532 | */ | |
533 | sc = &ts_softc[tsunit]; | |
534 | if ((bp->b_flags & B_READ) == 0) | |
535 | sc->sc_lastiow = 1; | |
536 | state = um->um_tab.b_active; | |
537 | um->um_tab.b_active = 0; | |
538 | /* | |
539 | * Check for errors. | |
540 | */ | |
541 | if (addr->tssr&TS_SC) { | |
542 | switch (addr->tssr & TS_TC) { | |
543 | case TS_UNREC: /* unrecoverable */ | |
544 | case TS_FATAL: /* fatal error */ | |
545 | case TS_ATTN: /* attention (shouldn't happen) */ | |
546 | case TS_RECNM: /* recoverable, no motion */ | |
547 | break; | |
548 | ||
549 | case TS_SUCC: /* success termination */ | |
550 | printf("ts%d: success\n", TSUNIT(minor(bp->b_dev))); | |
551 | goto ignoreerr; | |
552 | ||
553 | case TS_ALERT: /* tape status alert */ | |
554 | /* | |
555 | * If we hit the end of the tape file, | |
556 | * update our position. | |
557 | */ | |
558 | if (sc->sc_sts.s_xs0 & (TS_TMK|TS_EOT)) { | |
559 | tsseteof(bp); /* set blkno and nxrec */ | |
560 | state = SCOM; /* force completion */ | |
561 | /* | |
562 | * Stuff bc so it will be unstuffed correctly | |
563 | * later to get resid. | |
564 | */ | |
565 | sc->sc_sts.s_rbpcr = bp->b_bcount; | |
566 | goto opdone; | |
567 | } | |
568 | /* | |
569 | * If we were reading raw tape and the record was too long | |
570 | * or too short, then we don't consider this an error. | |
571 | */ | |
572 | if (bp == &rtsbuf[TSUNIT(bp->b_dev)] && (bp->b_flags&B_READ) && | |
573 | sc->sc_sts.s_xs0&(TS_RLS|TS_RLL)) | |
574 | goto ignoreerr; | |
575 | case TS_RECOV: /* recoverable, tape moved */ | |
576 | /* | |
577 | * If this was an i/o operation retry up to 8 times. | |
578 | */ | |
579 | if (state==SIO) { | |
580 | if (++um->um_tab.b_errcnt < 7) { | |
581 | ubadone(um); | |
582 | goto opcont; | |
583 | } else | |
584 | sc->sc_blkno++; | |
585 | } else { | |
586 | /* | |
587 | * Non-i/o errors on non-raw tape | |
588 | * cause it to close. | |
589 | */ | |
590 | if (sc->sc_openf>0 && bp != &rtsbuf[TSUNIT(bp->b_dev)]) | |
591 | sc->sc_openf = -1; | |
592 | } | |
9bad5ea5 | 593 | break; |
30a7bcbf BJ |
594 | |
595 | case TS_REJECT: /* function reject */ | |
596 | if (state == SIO && sc->sc_sts.s_xs0 & TS_WLE) | |
597 | printf("ts%d: write locked\n", TSUNIT(bp->b_dev)); | |
598 | if ((sc->sc_sts.s_xs0 & TS_ONL) == 0) | |
599 | printf("ts%d: offline\n", TSUNIT(bp->b_dev)); | |
9bad5ea5 BJ |
600 | break; |
601 | } | |
30a7bcbf BJ |
602 | /* |
603 | * Couldn't recover error | |
604 | */ | |
ead7d8e1 | 605 | printf("ts%d: hard error bn%d xs0=%b", TSUNIT(bp->b_dev), |
30a7bcbf | 606 | bp->b_blkno, sc->sc_sts.s_xs0, TSXS0_BITS); |
ead7d8e1 BJ |
607 | if (sc->sc_sts.s_xs1) |
608 | printf(" xs1=%b", sc->sc_sts.s_xs1, TSXS1_BITS); | |
609 | if (sc->sc_sts.s_xs2) | |
610 | printf(" xs2=%b", sc->sc_sts.s_xs2, TSXS2_BITS); | |
611 | if (sc->sc_sts.s_xs3) | |
612 | printf(" xs3=%b", sc->sc_sts.s_xs3, TSXS3_BITS); | |
613 | printf("\n"); | |
30a7bcbf BJ |
614 | bp->b_flags |= B_ERROR; |
615 | goto opdone; | |
9bad5ea5 | 616 | } |
30a7bcbf BJ |
617 | /* |
618 | * Advance tape control FSM. | |
619 | */ | |
620 | ignoreerr: | |
621 | switch (state) { | |
622 | ||
9bad5ea5 | 623 | case SIO: |
30a7bcbf BJ |
624 | /* |
625 | * Read/write increments tape block number | |
626 | */ | |
627 | sc->sc_blkno++; | |
628 | goto opdone; | |
629 | ||
9bad5ea5 | 630 | case SCOM: |
30a7bcbf BJ |
631 | /* |
632 | * For forward/backward space record update current position. | |
633 | */ | |
634 | if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) | |
635 | switch (bp->b_command) { | |
636 | ||
637 | case TS_SFORW: | |
638 | sc->sc_blkno += bp->b_repcnt; | |
639 | break; | |
9bad5ea5 | 640 | |
30a7bcbf BJ |
641 | case TS_SREV: |
642 | sc->sc_blkno -= bp->b_repcnt; | |
643 | break; | |
644 | } | |
645 | goto opdone; | |
646 | ||
647 | case SSEEK: | |
648 | sc->sc_blkno = dbtofsb(bp->b_blkno); | |
649 | goto opcont; | |
9bad5ea5 BJ |
650 | |
651 | default: | |
30a7bcbf | 652 | panic("tsintr"); |
9bad5ea5 | 653 | } |
30a7bcbf BJ |
654 | opdone: |
655 | /* | |
656 | * Reset error count and remove | |
657 | * from device queue. | |
658 | */ | |
659 | um->um_tab.b_errcnt = 0; | |
30e0abb3 | 660 | um->um_tab.b_actf->b_actf = bp->av_forw; |
30a7bcbf BJ |
661 | bp->b_resid = sc->sc_sts.s_rbpcr; |
662 | ubadone(um); | |
663 | iodone(bp); | |
30e0abb3 | 664 | if (um->um_tab.b_actf->b_actf == 0) |
30a7bcbf BJ |
665 | return; |
666 | opcont: | |
667 | tsstart(um); | |
668 | } | |
669 | ||
670 | tsseteof(bp) | |
671 | register struct buf *bp; | |
672 | { | |
673 | register int tsunit = TSUNIT(bp->b_dev); | |
674 | register struct ts_softc *sc = &ts_softc[tsunit]; | |
675 | ||
676 | if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) { | |
677 | if (sc->sc_blkno > dbtofsb(bp->b_blkno)) { | |
678 | /* reversing */ | |
679 | sc->sc_nxrec = dbtofsb(bp->b_blkno) - sc->sc_sts.s_rbpcr; | |
680 | sc->sc_blkno = sc->sc_nxrec; | |
681 | } else { | |
682 | /* spacing forward */ | |
683 | sc->sc_blkno = dbtofsb(bp->b_blkno) + sc->sc_sts.s_rbpcr; | |
684 | sc->sc_nxrec = sc->sc_blkno - 1; | |
9bad5ea5 | 685 | } |
30a7bcbf BJ |
686 | return; |
687 | } | |
688 | /* eof on read */ | |
689 | sc->sc_nxrec = dbtofsb(bp->b_blkno); | |
9bad5ea5 BJ |
690 | } |
691 | ||
692 | tsread(dev) | |
30a7bcbf | 693 | dev_t dev; |
9bad5ea5 | 694 | { |
30a7bcbf | 695 | |
9bad5ea5 | 696 | tsphys(dev); |
30a7bcbf BJ |
697 | if (u.u_error) |
698 | return; | |
699 | physio(tsstrategy, &rtsbuf[TSUNIT(dev)], dev, B_READ, minphys); | |
9bad5ea5 BJ |
700 | } |
701 | ||
702 | tswrite(dev) | |
30a7bcbf | 703 | dev_t dev; |
9bad5ea5 | 704 | { |
30a7bcbf | 705 | |
9bad5ea5 | 706 | tsphys(dev); |
30a7bcbf BJ |
707 | if (u.u_error) |
708 | return; | |
709 | physio(tsstrategy, &rtsbuf[TSUNIT(dev)], dev, B_WRITE, minphys); | |
9bad5ea5 BJ |
710 | } |
711 | ||
30a7bcbf BJ |
712 | /* |
713 | * Check that a raw device exists. | |
714 | * If it does, set up sc_blkno and sc_nxrec | |
715 | * so that the tape will appear positioned correctly. | |
716 | */ | |
9bad5ea5 | 717 | tsphys(dev) |
30a7bcbf | 718 | dev_t dev; |
9bad5ea5 | 719 | { |
30a7bcbf BJ |
720 | register int tsunit = TSUNIT(dev); |
721 | register daddr_t a; | |
722 | register struct ts_softc *sc; | |
723 | register struct uba_device *ui; | |
9bad5ea5 | 724 | |
30a7bcbf BJ |
725 | if (tsunit >= NTS || (ui=tsdinfo[tsunit]) == 0 || ui->ui_alive == 0) { |
726 | u.u_error = ENXIO; | |
727 | return; | |
728 | } | |
729 | sc = &ts_softc[tsunit]; | |
730 | a = dbtofsb(u.u_offset >> 9); | |
731 | sc->sc_blkno = a; | |
732 | sc->sc_nxrec = a + 1; | |
9bad5ea5 | 733 | } |
f0a3ddbd | 734 | |
30a7bcbf BJ |
735 | tsreset(uban) |
736 | int uban; | |
f0a3ddbd | 737 | { |
30a7bcbf | 738 | register struct uba_ctlr *um; |
a870f835 BJ |
739 | register struct uba_device *ui; |
740 | register struct buf *dp; | |
30a7bcbf | 741 | register ts11; |
30a7bcbf BJ |
742 | |
743 | for (ts11 = 0; ts11 < NTS; ts11++) { | |
744 | if ((um = tsminfo[ts11]) == 0 || um->um_alive == 0 || | |
745 | um->um_ubanum != uban) | |
746 | continue; | |
747 | printf(" ts%d", ts11); | |
748 | um->um_tab.b_active = 0; | |
749 | um->um_tab.b_actf = um->um_tab.b_actl = 0; | |
a870f835 BJ |
750 | if (ts_softc[ts11].sc_openf > 0) |
751 | ts_softc[ts11].sc_openf = -1; | |
30a7bcbf BJ |
752 | if (um->um_ubinfo) { |
753 | printf("<%d>", (um->um_ubinfo>>28)&0xf); | |
754 | ubadone(um); | |
755 | } | |
a870f835 BJ |
756 | if ((ui = tsdinfo[ts11]) && ui->ui_mi == um && ui->ui_alive) { |
757 | dp = &tsutab[ts11]; | |
758 | dp->b_active = 0; | |
759 | dp->b_forw = 0; | |
760 | if (um->um_tab.b_actf == NULL) | |
761 | um->um_tab.b_actf = dp; | |
762 | else | |
763 | um->um_tab.b_actl->b_forw = dp; | |
764 | um->um_tab.b_actl = dp; | |
765 | } | |
b620b354 | 766 | (void) tsinit(ts11); |
30a7bcbf | 767 | tsstart(um); |
f0a3ddbd | 768 | } |
f0a3ddbd BJ |
769 | } |
770 | ||
30a7bcbf BJ |
771 | /*ARGSUSED*/ |
772 | tsioctl(dev, cmd, addr, flag) | |
773 | caddr_t addr; | |
774 | dev_t dev; | |
f0a3ddbd | 775 | { |
30a7bcbf BJ |
776 | int tsunit = TSUNIT(dev); |
777 | register struct ts_softc *sc = &ts_softc[tsunit]; | |
778 | register struct buf *bp = &ctsbuf[TSUNIT(dev)]; | |
779 | register callcount; | |
780 | int fcount; | |
781 | struct mtop mtop; | |
782 | struct mtget mtget; | |
783 | /* we depend of the values and order of the MT codes here */ | |
784 | static tsops[] = | |
b56f55c7 | 785 | {TS_WEOF,TS_SFORWF,TS_SREVF,TS_SFORW,TS_SREV,TS_REW,TS_OFFL,TS_SENSE}; |
30a7bcbf BJ |
786 | |
787 | switch (cmd) { | |
788 | case MTIOCTOP: /* tape operation */ | |
789 | if (copyin((caddr_t)addr, (caddr_t)&mtop, sizeof(mtop))) { | |
790 | u.u_error = EFAULT; | |
791 | return; | |
792 | } | |
793 | switch(mtop.mt_op) { | |
794 | case MTWEOF: | |
795 | callcount = mtop.mt_count; | |
796 | fcount = 1; | |
797 | break; | |
798 | case MTFSF: case MTBSF: | |
799 | case MTFSR: case MTBSR: | |
800 | callcount = 1; | |
801 | fcount = mtop.mt_count; | |
802 | break; | |
803 | case MTREW: case MTOFFL: case MTNOP: | |
804 | callcount = 1; | |
805 | fcount = 1; | |
806 | break; | |
807 | default: | |
808 | u.u_error = ENXIO; | |
809 | return; | |
810 | } | |
811 | if (callcount <= 0 || fcount <= 0) { | |
812 | u.u_error = ENXIO; | |
813 | return; | |
814 | } | |
815 | while (--callcount >= 0) { | |
816 | tscommand(dev, tsops[mtop.mt_op], fcount); | |
817 | if ((mtop.mt_op == MTFSR || mtop.mt_op == MTBSR) && | |
818 | bp->b_resid) { | |
819 | u.u_error = EIO; | |
820 | break; | |
821 | } | |
822 | if ((bp->b_flags&B_ERROR) || sc->sc_sts.s_xs0&TS_BOT) | |
823 | break; | |
824 | } | |
825 | geterror(bp); | |
826 | return; | |
827 | case MTIOCGET: | |
828 | mtget.mt_dsreg = 0; | |
829 | mtget.mt_erreg = sc->sc_sts.s_xs0; | |
830 | mtget.mt_resid = sc->sc_resid; | |
e320a1c9 | 831 | mtget.mt_type = MT_ISTS; |
30a7bcbf BJ |
832 | if (copyout((caddr_t)&mtget, addr, sizeof(mtget))) |
833 | u.u_error = EFAULT; | |
834 | return; | |
835 | default: | |
836 | u.u_error = ENXIO; | |
837 | } | |
f0a3ddbd BJ |
838 | } |
839 | ||
30a7bcbf | 840 | #define DBSIZE 20 |
f0a3ddbd | 841 | |
30a7bcbf BJ |
842 | tsdump() |
843 | { | |
844 | register struct uba_device *ui; | |
845 | register struct uba_regs *up; | |
a870f835 | 846 | register struct tsdevice *addr; |
30a7bcbf BJ |
847 | int blk, num; |
848 | int start; | |
849 | ||
850 | start = 0; | |
851 | num = maxfree; | |
852 | #define phys(a,b) ((b)((int)(a)&0x7fffffff)) | |
853 | if (tsdinfo[0] == 0) | |
854 | return (ENXIO); | |
855 | ui = phys(tsdinfo[0], struct uba_device *); | |
856 | up = phys(ui->ui_hd, struct uba_hd *)->uh_physuba; | |
30e0abb3 | 857 | ubainit(up); |
30a7bcbf | 858 | DELAY(1000000); |
a870f835 | 859 | addr = (struct tsdevice *)ui->ui_physaddr; |
30a7bcbf BJ |
860 | addr->tssr = 0; |
861 | tswait(addr); | |
862 | while (num > 0) { | |
863 | blk = num > DBSIZE ? DBSIZE : num; | |
864 | tsdwrite(start, blk, addr, up); | |
865 | start += blk; | |
866 | num -= blk; | |
867 | } | |
868 | tseof(addr); | |
869 | tseof(addr); | |
870 | tswait(addr); | |
871 | if (addr->tssr&TS_SC) | |
872 | return (EIO); | |
873 | addr->tssr = 0; | |
874 | tswait(addr); | |
875 | return (0); | |
f0a3ddbd BJ |
876 | } |
877 | ||
30a7bcbf BJ |
878 | tsdwrite(dbuf, num, addr, up) |
879 | register dbuf, num; | |
a870f835 | 880 | register struct tsdevice *addr; |
30a7bcbf | 881 | struct uba_regs *up; |
f0a3ddbd | 882 | { |
30a7bcbf BJ |
883 | register struct pte *io; |
884 | register int npf; | |
885 | ||
886 | tswait(addr); | |
887 | io = up->uba_map; | |
888 | npf = num+1; | |
889 | while (--npf != 0) | |
890 | *(int *)io++ = (dbuf++ | (1<<UBAMR_DPSHIFT) | UBAMR_MRV); | |
891 | *(int *)io = 0; | |
892 | #ifdef notyet | |
893 | addr->tsbc = -(num*NBPG); | |
894 | addr->tsba = 0; | |
895 | addr->tscs = TS_WCOM | TM_GO; | |
896 | #endif | |
f0a3ddbd BJ |
897 | } |
898 | ||
30a7bcbf | 899 | tswait(addr) |
a870f835 | 900 | register struct tsdevice *addr; |
f0a3ddbd | 901 | { |
30a7bcbf | 902 | register s; |
f0a3ddbd | 903 | |
30a7bcbf BJ |
904 | do |
905 | s = addr->tssr; | |
906 | while ((s & TS_SSR) == 0); | |
f0a3ddbd BJ |
907 | } |
908 | ||
30a7bcbf | 909 | tseof(addr) |
a870f835 | 910 | struct tsdevice *addr; |
f0a3ddbd | 911 | { |
30a7bcbf BJ |
912 | |
913 | tswait(addr); | |
914 | #ifdef notyet | |
915 | addr->tscs = TS_WEOF | TM_GO; | |
916 | #endif | |
f0a3ddbd | 917 | } |
9bad5ea5 | 918 | #endif |