Commit | Line | Data |
---|---|---|
23e0e9b8 | 1 | /* ts.c 4.10 81/04/14 */ |
9bad5ea5 | 2 | |
66b4fb09 | 3 | #include "ts.h" |
23e0e9b8 | 4 | #include "tm.h" |
9bad5ea5 | 5 | #if NTS > 0 |
30e0abb3 BJ |
6 | #define printd if(tsdebug)printf |
7 | int tsdebug; | |
9bad5ea5 BJ |
8 | /* |
9 | * TS11 tape driver | |
30a7bcbf BJ |
10 | * |
11 | * TODO: | |
12 | * test driver with more than one controller | |
13 | * test reset code | |
14 | * test dump code | |
15 | * test rewinds without hanging in driver | |
16 | * what happens if you offline tape during rewind? | |
17 | * test using file system on tape | |
9bad5ea5 | 18 | */ |
9bad5ea5 BJ |
19 | #include "../h/param.h" |
20 | #include "../h/systm.h" | |
21 | #include "../h/buf.h" | |
9bad5ea5 | 22 | #include "../h/dir.h" |
30a7bcbf | 23 | #include "../h/conf.h" |
9bad5ea5 | 24 | #include "../h/user.h" |
30a7bcbf | 25 | #include "../h/file.h" |
9bad5ea5 | 26 | #include "../h/map.h" |
30a7bcbf | 27 | #include "../h/pte.h" |
e1b765e1 | 28 | #include "../h/vm.h" |
30a7bcbf BJ |
29 | #include "../h/ubareg.h" |
30 | #include "../h/ubavar.h" | |
31 | #include "../h/mtio.h" | |
32 | #include "../h/ioctl.h" | |
33 | #include "../h/cmap.h" | |
34 | #include "../h/cpu.h" | |
35 | ||
36 | #include "../h/tsreg.h" | |
37 | ||
38 | /* | |
39 | * There is a ctsbuf per tape controller. | |
40 | * It is used as the token to pass to the internal routines | |
41 | * to execute tape ioctls. | |
42 | * In particular, when the tape is rewinding on close we release | |
43 | * the user process but any further attempts to use the tape drive | |
44 | * before the rewind completes will hang waiting for ctsbuf. | |
45 | */ | |
46 | struct buf ctsbuf[NTS]; | |
47 | ||
48 | /* | |
49 | * Raw tape operations use rtsbuf. The driver | |
50 | * notices when rtsbuf is being used and allows the user | |
51 | * program to continue after errors and read records | |
52 | * not of the standard length (BSIZE). | |
53 | */ | |
54 | struct buf rtsbuf[NTS]; | |
55 | ||
56 | /* | |
57 | * Driver unibus interface routines and variables. | |
58 | */ | |
59 | int tsprobe(), tsslave(), tsattach(), tsdgo(), tsintr(); | |
60 | struct uba_ctlr *tsminfo[NTS]; | |
61 | struct uba_device *tsdinfo[NTS]; | |
30e0abb3 | 62 | struct buf tsbuf[NTS]; |
30a7bcbf BJ |
63 | u_short tsstd[] = { 0772520, 0 }; |
64 | /*** PROBABLY DON'T NEED ALL THESE SINCE CONTROLLER == DRIVE ***/ | |
65 | struct uba_driver zsdriver = | |
30e0abb3 | 66 | { tsprobe, tsslave, tsattach, tsdgo, tsstd, "ts", tsdinfo, "zs", tsminfo, 0 }; |
30a7bcbf BJ |
67 | |
68 | /* bits in minor device */ | |
69 | #define TSUNIT(dev) (minor(dev)&03) | |
70 | #define T_NOREWIND 04 | |
9bad5ea5 | 71 | |
30a7bcbf | 72 | #define INF (daddr_t)1000000L |
9bad5ea5 | 73 | |
30a7bcbf BJ |
74 | /* |
75 | * Software state per tape transport. | |
76 | * Also contains hardware state in message packets. | |
77 | * | |
78 | * 1. A tape drive is a unique-open device; we refuse opens when it is already. | |
79 | * 2. We keep track of the current position on a block tape and seek | |
80 | * before operations by forward/back spacing if necessary. | |
81 | * 3. We remember if the last operation was a write on a tape, so if a tape | |
82 | * is open read write and the last thing done is a write we can | |
83 | * write a standard end of tape mark (two eofs). | |
84 | * 4. We remember the status registers after the last command, using | |
85 | * then internally and returning them to the SENSE ioctl. | |
86 | */ | |
87 | struct ts_softc { | |
88 | char sc_openf; /* lock against multiple opens */ | |
89 | char sc_lastiow; /* last op was a write */ | |
30e0abb3 | 90 | short sc_resid; /* copy of last bc */ |
30a7bcbf BJ |
91 | daddr_t sc_blkno; /* block number, for block device tape */ |
92 | daddr_t sc_nxrec; /* position of end of tape, if known */ | |
30a7bcbf BJ |
93 | struct ts_cmd sc_cmd; /* the command packet - ADDR MUST BE 0 MOD 4 */ |
94 | struct ts_sts sc_sts; /* status packet, for returned status */ | |
95 | struct ts_char sc_char; /* characteristics packet */ | |
96 | u_short sc_uba; /* Unibus addr of cmd pkt for tsdb */ | |
97 | } ts_softc[NTS]; | |
98 | ||
99 | struct ts_softc *ts_ubaddr; /* Unibus address of ts_softc */ | |
100 | ||
101 | /* | |
102 | * States for um->um_tab.b_active, the per controller state flag. | |
103 | * This is used to sequence control in the driver. | |
104 | */ | |
105 | #define SSEEK 1 /* seeking */ | |
106 | #define SIO 2 /* doing seq i/o */ | |
107 | #define SCOM 3 /* sending control command */ | |
108 | #define SREW 4 /* sending a drive rewind */ | |
109 | ||
23e0e9b8 BJ |
110 | #if NTM > 0 |
111 | /* kludge... see tm.c */ | |
112 | extern havetm; | |
113 | #endif | |
30a7bcbf BJ |
114 | /* |
115 | * Determine if there is a controller for | |
116 | * a ts at address reg. Our goal is to make the | |
117 | * device interrupt. | |
118 | */ | |
119 | tsprobe(reg) | |
120 | caddr_t reg; | |
121 | { | |
122 | register int br, cvec; /* must be r11,r10; value-result */ | |
123 | ||
124 | #ifdef lint | |
125 | br = 0; cvec = br; br = cvec; | |
126 | #endif | |
127 | /****************/ | |
128 | /* */ | |
129 | /* K L U D G E */ | |
130 | /* */ | |
131 | /****************/ | |
132 | ||
23e0e9b8 BJ |
133 | #if NTM > 0 |
134 | if (havetm) | |
135 | return (0); | |
136 | #endif | |
30a7bcbf BJ |
137 | /* IT'S TOO HARD TO MAKE THIS THING INTERRUPT |
138 | JUST TO FIND ITS VECTOR */ | |
139 | cvec = 0224; | |
140 | br = 0x15; | |
141 | } | |
142 | ||
143 | /* | |
144 | * TS11 only supports one drive per controller; | |
145 | * check for ui_slave == 0. | |
146 | * | |
147 | * DO WE REALLY NEED THIS ROUTINE??? | |
148 | */ | |
149 | /*ARGSUSED*/ | |
150 | tsslave(ui, reg) | |
151 | struct uba_device *ui; | |
152 | caddr_t reg; | |
153 | { | |
154 | ||
155 | if (ui->ui_slave) /* non-zero slave not allowed */ | |
156 | return(0); | |
157 | return (1); | |
158 | } | |
159 | ||
160 | /* | |
161 | * Record attachment of the unit to the controller. | |
162 | * | |
163 | * SHOULD THIS ROUTINE DO ANYTHING??? | |
164 | */ | |
165 | /*ARGSUSED*/ | |
166 | tsattach(ui) | |
167 | struct uba_device *ui; | |
168 | { | |
169 | ||
170 | } | |
171 | ||
172 | /* | |
173 | * Open the device. Tapes are unique open | |
174 | * devices, so we refuse if it is already open. | |
175 | * We also check that a tape is available, and | |
176 | * don't block waiting here; if you want to wait | |
177 | * for a tape you should timeout in user code. | |
178 | */ | |
9bad5ea5 | 179 | tsopen(dev, flag) |
30a7bcbf BJ |
180 | dev_t dev; |
181 | int flag; | |
9bad5ea5 | 182 | { |
30a7bcbf BJ |
183 | register int tsunit; |
184 | register struct uba_device *ui; | |
185 | register struct ts_softc *sc; | |
9bad5ea5 | 186 | |
30a7bcbf BJ |
187 | tsunit = TSUNIT(dev); |
188 | if (tsunit>=NTS || (sc = &ts_softc[tsunit])->sc_openf || | |
189 | (ui = tsdinfo[tsunit]) == 0 || ui->ui_alive == 0) { | |
9bad5ea5 BJ |
190 | u.u_error = ENXIO; |
191 | return; | |
192 | } | |
30a7bcbf | 193 | if (tsinit(tsunit)) { |
9bad5ea5 | 194 | u.u_error = ENXIO; |
30e0abb3 | 195 | printd("init failed\n"); |
9bad5ea5 BJ |
196 | return; |
197 | } | |
30e0abb3 | 198 | printd("init ok\n"); |
30a7bcbf | 199 | tscommand(dev, TS_SENSE, 1); |
30e0abb3 | 200 | printd("sense xs0 %o\n", sc->sc_sts.s_xs0); |
30a7bcbf BJ |
201 | if ((sc->sc_sts.s_xs0&TS_ONL) == 0 || ((flag&(FREAD|FWRITE)) == |
202 | FWRITE && (sc->sc_sts.s_xs0&TS_WLK))) { | |
203 | /* | |
204 | * Not online or write locked. | |
205 | */ | |
206 | u.u_error = EIO; | |
207 | return; | |
9bad5ea5 | 208 | } |
30a7bcbf BJ |
209 | sc->sc_openf = 1; |
210 | sc->sc_blkno = (daddr_t)0; | |
211 | sc->sc_nxrec = INF; | |
212 | sc->sc_lastiow = 0; | |
9bad5ea5 BJ |
213 | } |
214 | ||
30a7bcbf BJ |
215 | /* |
216 | * Close tape device. | |
217 | * | |
218 | * If tape was open for writing or last operation was | |
219 | * a write, then write two EOF's and backspace over the last one. | |
220 | * Unless this is a non-rewinding special file, rewind the tape. | |
221 | * Make the tape available to others. | |
222 | */ | |
9bad5ea5 | 223 | tsclose(dev, flag) |
30a7bcbf BJ |
224 | register dev_t dev; |
225 | register flag; | |
9bad5ea5 | 226 | { |
30a7bcbf BJ |
227 | register struct ts_softc *sc = &ts_softc[TSUNIT(dev)]; |
228 | ||
229 | if (flag == FWRITE || (flag&FWRITE) && sc->sc_lastiow) { | |
230 | tscommand(dev, TS_WEOF, 1); | |
231 | tscommand(dev, TS_WEOF, 1); | |
232 | tscommand(dev, TS_SREV, 1); | |
233 | } | |
234 | if ((minor(dev)&T_NOREWIND) == 0) | |
235 | /* | |
236 | * 0 count means don't hang waiting for rewind complete | |
237 | * rather ctsbuf stays busy until the operation completes | |
238 | * preventing further opens from completing by | |
239 | * preventing a TS_SENSE from completing. | |
240 | */ | |
241 | tscommand(dev, TS_REW, 0); | |
242 | sc->sc_openf = 0; | |
243 | } | |
9bad5ea5 | 244 | |
30a7bcbf BJ |
245 | /* |
246 | * Initialize the TS11. Set up Unibus mapping for command | |
247 | * packets and set device characteristics. | |
248 | */ | |
249 | tsinit(unit) | |
250 | register int unit; | |
251 | { | |
252 | register struct ts_softc *sc = &ts_softc[unit]; | |
253 | register struct uba_ctlr *um = tsminfo[unit]; | |
254 | register struct device *addr = (struct device *)um->um_addr; | |
255 | register int i; | |
256 | ||
257 | /* | |
258 | * Map the command and message packets into Unibus | |
259 | * address space. We do all the command and message | |
260 | * packets at once to minimize the amount of Unibus | |
261 | * mapping necessary. | |
262 | */ | |
263 | if (ts_ubaddr == 0) { | |
264 | ctsbuf[unit].b_un.b_addr = (caddr_t)ts_softc; | |
265 | ctsbuf[unit].b_bcount = sizeof(ts_softc); | |
266 | i = ubasetup(um->um_ubanum, &ctsbuf[unit], 0); | |
267 | i &= 0777777; | |
268 | ts_ubaddr = (struct ts_softc *)i; | |
269 | /* MAKE SURE WE DON'T GET UNIBUS ADDRESS ZERO */ | |
270 | if (ts_ubaddr == 0) | |
271 | printf("ts%d: zero ubaddr\n", unit); | |
272 | } | |
273 | /* | |
274 | * Now initialize the TS11 controller. | |
275 | * Set the characteristics. | |
276 | */ | |
277 | if (addr->tssr & TS_NBA) { | |
278 | addr->tssr = 0; /* subsystem initialize */ | |
279 | tswait(addr); | |
280 | i = (int)&ts_ubaddr[unit].sc_cmd; /* Unibus addr of cmd */ | |
30e0abb3 BJ |
281 | if (i&3) { |
282 | printf("addr mod 4 != 0\n"); | |
283 | return(1); | |
284 | } | |
30a7bcbf BJ |
285 | sc->sc_uba = (u_short)(i + ((i>>16)&3)); |
286 | sc->sc_char.char_addr = (int)&ts_ubaddr[unit].sc_sts; | |
287 | sc->sc_char.char_size = sizeof(struct ts_sts); | |
288 | sc->sc_char.char_mode = TS_ESS; | |
289 | sc->sc_cmd.c_cmd = TS_ACK | TS_SETCHR; | |
30e0abb3 BJ |
290 | i = (int)&ts_ubaddr[unit].sc_char; |
291 | sc->sc_cmd.c_loba = i; | |
292 | sc->sc_cmd.c_hiba = (i>>16)&3; | |
30a7bcbf BJ |
293 | sc->sc_cmd.c_size = sizeof(struct ts_char); |
294 | addr->tsdb = sc->sc_uba; | |
295 | tswait(addr); | |
30e0abb3 BJ |
296 | /* |
297 | printd("%o %o %o %o %o %o %o %o\n", addr->tssr, sc->sc_sts.s_sts, sc->sc_sts.s_len, sc->sc_sts.s_rbpcr, sc->sc_sts.s_xs0, sc->sc_sts.s_xs1,sc->sc_sts.s_xs1,sc->sc_sts.s_xs2,sc->sc_sts.s_xs3); | |
298 | */ | |
299 | if (addr->tssr & TS_NBA) | |
300 | return(1); | |
9bad5ea5 | 301 | } |
30a7bcbf | 302 | return(0); |
9bad5ea5 BJ |
303 | } |
304 | ||
30a7bcbf BJ |
305 | /* |
306 | * Execute a command on the tape drive | |
307 | * a specified number of times. | |
308 | */ | |
309 | tscommand(dev, com, count) | |
310 | dev_t dev; | |
311 | int com, count; | |
9bad5ea5 BJ |
312 | { |
313 | register struct buf *bp; | |
314 | ||
30a7bcbf BJ |
315 | bp = &ctsbuf[TSUNIT(dev)]; |
316 | (void) spl5(); | |
317 | while (bp->b_flags&B_BUSY) { | |
318 | /* | |
319 | * This special check is because B_BUSY never | |
320 | * gets cleared in the non-waiting rewind case. | |
321 | */ | |
322 | if (bp->b_repcnt == 0 && (bp->b_flags&B_DONE)) | |
323 | break; | |
9bad5ea5 BJ |
324 | bp->b_flags |= B_WANTED; |
325 | sleep((caddr_t)bp, PRIBIO); | |
326 | } | |
9bad5ea5 | 327 | bp->b_flags = B_BUSY|B_READ; |
30a7bcbf | 328 | (void) spl0(); |
30e0abb3 | 329 | printd("command %o dev %x count %d\n", com, dev, count); |
30a7bcbf BJ |
330 | bp->b_dev = dev; |
331 | bp->b_repcnt = count; | |
332 | bp->b_command = com; | |
333 | bp->b_blkno = 0; | |
9bad5ea5 | 334 | tsstrategy(bp); |
30a7bcbf BJ |
335 | /* |
336 | * In case of rewind from close, don't wait. | |
337 | * This is the only case where count can be 0. | |
338 | */ | |
339 | if (count == 0) | |
340 | return; | |
9bad5ea5 | 341 | iowait(bp); |
30a7bcbf | 342 | if (bp->b_flags&B_WANTED) |
9bad5ea5 | 343 | wakeup((caddr_t)bp); |
30a7bcbf | 344 | bp->b_flags &= B_ERROR; |
9bad5ea5 BJ |
345 | } |
346 | ||
30a7bcbf BJ |
347 | /* |
348 | * Queue a tape operation. | |
349 | */ | |
9bad5ea5 | 350 | tsstrategy(bp) |
30a7bcbf | 351 | register struct buf *bp; |
9bad5ea5 | 352 | { |
30a7bcbf BJ |
353 | int tsunit = TSUNIT(bp->b_dev); |
354 | register struct uba_ctlr *um; | |
30e0abb3 | 355 | register struct buf *dp; |
30a7bcbf BJ |
356 | |
357 | /* | |
358 | * Put transfer at end of controller queue | |
359 | */ | |
9bad5ea5 | 360 | bp->av_forw = NULL; |
30a7bcbf | 361 | um = tsdinfo[tsunit]->ui_mi; |
30e0abb3 | 362 | dp = &tsbuf[tsunit]; |
30a7bcbf | 363 | (void) spl5(); |
30e0abb3 BJ |
364 | if (dp->b_actf == NULL) |
365 | dp->b_actf = bp; | |
9bad5ea5 | 366 | else |
30e0abb3 BJ |
367 | dp->b_actl->av_forw = bp; |
368 | dp->b_actl = bp; | |
369 | um->um_tab.b_actf = um->um_tab.b_actl = dp; | |
30a7bcbf BJ |
370 | /* |
371 | * If the controller is not busy, get | |
372 | * it going. | |
373 | */ | |
374 | if (um->um_tab.b_active == 0) | |
375 | tsstart(um); | |
376 | (void) spl0(); | |
9bad5ea5 BJ |
377 | } |
378 | ||
30a7bcbf BJ |
379 | /* |
380 | * Start activity on a ts controller. | |
381 | */ | |
382 | tsstart(um) | |
383 | register struct uba_ctlr *um; | |
9bad5ea5 BJ |
384 | { |
385 | register struct buf *bp; | |
30a7bcbf BJ |
386 | register struct device *addr = (struct device *)um->um_addr; |
387 | register struct ts_softc *sc; | |
388 | register struct ts_cmd *tc; | |
389 | register struct uba_device *ui; | |
390 | int tsunit, cmd; | |
9bad5ea5 BJ |
391 | daddr_t blkno; |
392 | ||
30a7bcbf BJ |
393 | /* |
394 | * Start the controller if there is something for it to do. | |
395 | */ | |
396 | loop: | |
30e0abb3 | 397 | if ((bp = um->um_tab.b_actf->b_actf) == NULL) |
9bad5ea5 | 398 | return; |
30a7bcbf BJ |
399 | tsunit = TSUNIT(bp->b_dev); |
400 | ui = tsdinfo[tsunit]; | |
401 | sc = &ts_softc[tsunit]; | |
402 | tc = &sc->sc_cmd; | |
403 | /* | |
404 | * Default is that last command was NOT a write command; | |
405 | * if we do a write command we will notice this in tsintr(). | |
406 | */ | |
407 | sc->sc_lastiow = 1; | |
408 | if (sc->sc_openf < 0 || (addr->tssr&TS_OFL)) { | |
409 | /* | |
410 | * Have had a hard error on a non-raw tape | |
411 | * or the tape unit is now unavailable | |
412 | * (e.g. taken off line). | |
413 | */ | |
414 | bp->b_flags |= B_ERROR; | |
415 | goto next; | |
416 | } | |
417 | if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) { | |
418 | /* | |
419 | * Execute control operation with the specified count. | |
420 | */ | |
421 | um->um_tab.b_active = | |
422 | bp->b_command == TS_REW ? SREW : SCOM; | |
423 | tc->c_repcnt = bp->b_repcnt; | |
30e0abb3 | 424 | printd("strat: do cmd\n"); |
30a7bcbf BJ |
425 | goto dobpcmd; |
426 | } | |
427 | /* | |
428 | * The following checks handle boundary cases for operation | |
429 | * on non-raw tapes. On raw tapes the initialization of | |
430 | * sc->sc_nxrec by tsphys causes them to be skipped normally | |
431 | * (except in the case of retries). | |
432 | */ | |
433 | if (dbtofsb(bp->b_blkno) > sc->sc_nxrec) { | |
434 | /* | |
435 | * Can't read past known end-of-file. | |
436 | */ | |
437 | bp->b_flags |= B_ERROR; | |
438 | bp->b_error = ENXIO; | |
439 | goto next; | |
440 | } | |
441 | if (dbtofsb(bp->b_blkno) == sc->sc_nxrec && | |
442 | bp->b_flags&B_READ) { | |
443 | /* | |
444 | * Reading at end of file returns 0 bytes. | |
445 | */ | |
446 | bp->b_resid = bp->b_bcount; | |
447 | clrbuf(bp); | |
448 | goto next; | |
449 | } | |
450 | if ((bp->b_flags&B_READ) == 0) | |
451 | /* | |
452 | * Writing sets EOF | |
453 | */ | |
454 | sc->sc_nxrec = dbtofsb(bp->b_blkno) + 1; | |
455 | /* | |
456 | * If the data transfer command is in the correct place, | |
457 | * set up all the registers except the csr, and give | |
458 | * control over to the UNIBUS adapter routines, to | |
459 | * wait for resources to start the i/o. | |
460 | */ | |
461 | if ((blkno = sc->sc_blkno) == dbtofsb(bp->b_blkno)) { | |
462 | tc->c_size = bp->b_bcount; | |
463 | if ((bp->b_flags&B_READ) == 0) | |
464 | cmd = TS_WCOM; | |
9bad5ea5 | 465 | else |
30a7bcbf BJ |
466 | cmd = TS_RCOM; |
467 | if (um->um_tab.b_errcnt) | |
468 | cmd |= TS_RETRY; | |
469 | um->um_tab.b_active = SIO; | |
30e0abb3 BJ |
470 | tc->c_cmd = TS_ACK | TS_CVC | TS_IE | cmd; |
471 | printd("r/w %o size %d\n", tc->c_cmd, tc->c_size); | |
30a7bcbf BJ |
472 | (void) ubago(ui); |
473 | return; | |
474 | } | |
475 | /* | |
476 | * Tape positioned incorrectly; | |
477 | * set to seek forwards or backwards to the correct spot. | |
478 | * This happens for raw tapes only on error retries. | |
479 | */ | |
480 | um->um_tab.b_active = SSEEK; | |
30e0abb3 | 481 | printd("seek blkno %d b_blkno %d\n", blkno, bp->b_blkno); |
30a7bcbf BJ |
482 | if (blkno < dbtofsb(bp->b_blkno)) { |
483 | bp->b_command = TS_SFORW; | |
484 | tc->c_repcnt = dbtofsb(bp->b_blkno) - blkno; | |
9bad5ea5 | 485 | } else { |
30a7bcbf BJ |
486 | bp->b_command = TS_SREV; |
487 | tc->c_repcnt = blkno - dbtofsb(bp->b_blkno); | |
9bad5ea5 | 488 | } |
30a7bcbf BJ |
489 | dobpcmd: |
490 | /* | |
491 | * Do the command in bp. | |
492 | */ | |
30e0abb3 | 493 | tc->c_cmd = TS_ACK | TS_CVC | TS_IE | bp->b_command; |
30a7bcbf | 494 | addr->tsdb = sc->sc_uba; |
9bad5ea5 BJ |
495 | return; |
496 | ||
30a7bcbf BJ |
497 | next: |
498 | /* | |
499 | * Done with this operation due to error or | |
500 | * the fact that it doesn't do anything. | |
501 | * Release UBA resources (if any), dequeue | |
502 | * the transfer and continue processing this slave. | |
503 | */ | |
504 | if (um->um_ubinfo) | |
505 | ubadone(um); | |
506 | um->um_tab.b_errcnt = 0; | |
30e0abb3 | 507 | um->um_tab.b_actf->b_actf = bp->av_forw; |
9bad5ea5 BJ |
508 | iodone(bp); |
509 | goto loop; | |
510 | } | |
511 | ||
30a7bcbf BJ |
512 | /* |
513 | * The UNIBUS resources we needed have been | |
514 | * allocated to us; start the device. | |
515 | */ | |
516 | tsdgo(um) | |
517 | register struct uba_ctlr *um; | |
518 | { | |
519 | register struct device *addr = (struct device *)um->um_addr; | |
520 | register struct ts_softc *sc = &ts_softc[um->um_ctlr]; | |
30e0abb3 | 521 | register int i; |
30a7bcbf | 522 | |
30e0abb3 BJ |
523 | i = um->um_ubinfo & 0777777; |
524 | printd("dgo addr %o\n", i); | |
525 | sc->sc_cmd.c_loba = i; | |
526 | sc->sc_cmd.c_hiba = (i>>16)&3; | |
30a7bcbf BJ |
527 | addr->tsdb = sc->sc_uba; |
528 | } | |
529 | ||
530 | /* | |
531 | * Ts interrupt routine. | |
532 | */ | |
533 | /*ARGSUSED*/ | |
534 | tsintr(ts11) | |
535 | int ts11; | |
9bad5ea5 BJ |
536 | { |
537 | register struct buf *bp; | |
30a7bcbf BJ |
538 | register struct uba_ctlr *um = tsminfo[ts11]; |
539 | register struct device *addr; | |
540 | register struct ts_softc *sc; | |
541 | int tsunit; | |
542 | register state; | |
9bad5ea5 | 543 | |
30e0abb3 BJ |
544 | printd("intr\n"); |
545 | if ((bp = um->um_tab.b_actf->b_actf) == NULL) | |
9bad5ea5 | 546 | return; |
30a7bcbf BJ |
547 | tsunit = TSUNIT(bp->b_dev); |
548 | addr = (struct device *)tsdinfo[tsunit]->ui_addr; | |
549 | /* | |
550 | * If last command was a rewind, and tape is still | |
551 | * rewinding, wait for the rewind complete interrupt. | |
552 | * | |
553 | * SHOULD NEVER GET AN INTERRUPT IN THIS STATE. | |
554 | */ | |
555 | if (um->um_tab.b_active == SREW) { | |
556 | um->um_tab.b_active = SCOM; | |
557 | if ((addr->tssr&TS_SSR) == 0) | |
558 | return; | |
559 | } | |
560 | /* | |
561 | * An operation completed... record status | |
562 | */ | |
30e0abb3 | 563 | printd(" ok1\n"); |
30a7bcbf BJ |
564 | sc = &ts_softc[tsunit]; |
565 | if ((bp->b_flags & B_READ) == 0) | |
566 | sc->sc_lastiow = 1; | |
567 | state = um->um_tab.b_active; | |
568 | um->um_tab.b_active = 0; | |
569 | /* | |
570 | * Check for errors. | |
571 | */ | |
572 | if (addr->tssr&TS_SC) { | |
573 | switch (addr->tssr & TS_TC) { | |
574 | case TS_UNREC: /* unrecoverable */ | |
575 | case TS_FATAL: /* fatal error */ | |
576 | case TS_ATTN: /* attention (shouldn't happen) */ | |
577 | case TS_RECNM: /* recoverable, no motion */ | |
578 | break; | |
579 | ||
580 | case TS_SUCC: /* success termination */ | |
581 | printf("ts%d: success\n", TSUNIT(minor(bp->b_dev))); | |
582 | goto ignoreerr; | |
583 | ||
584 | case TS_ALERT: /* tape status alert */ | |
585 | /* | |
586 | * If we hit the end of the tape file, | |
587 | * update our position. | |
588 | */ | |
589 | if (sc->sc_sts.s_xs0 & (TS_TMK|TS_EOT)) { | |
590 | tsseteof(bp); /* set blkno and nxrec */ | |
591 | state = SCOM; /* force completion */ | |
592 | /* | |
593 | * Stuff bc so it will be unstuffed correctly | |
594 | * later to get resid. | |
595 | */ | |
596 | sc->sc_sts.s_rbpcr = bp->b_bcount; | |
597 | goto opdone; | |
598 | } | |
599 | /* | |
600 | * If we were reading raw tape and the record was too long | |
601 | * or too short, then we don't consider this an error. | |
602 | */ | |
603 | if (bp == &rtsbuf[TSUNIT(bp->b_dev)] && (bp->b_flags&B_READ) && | |
604 | sc->sc_sts.s_xs0&(TS_RLS|TS_RLL)) | |
605 | goto ignoreerr; | |
606 | case TS_RECOV: /* recoverable, tape moved */ | |
607 | /* | |
608 | * If this was an i/o operation retry up to 8 times. | |
609 | */ | |
610 | if (state==SIO) { | |
611 | if (++um->um_tab.b_errcnt < 7) { | |
612 | ubadone(um); | |
613 | goto opcont; | |
614 | } else | |
615 | sc->sc_blkno++; | |
616 | } else { | |
617 | /* | |
618 | * Non-i/o errors on non-raw tape | |
619 | * cause it to close. | |
620 | */ | |
621 | if (sc->sc_openf>0 && bp != &rtsbuf[TSUNIT(bp->b_dev)]) | |
622 | sc->sc_openf = -1; | |
623 | } | |
9bad5ea5 | 624 | break; |
30a7bcbf BJ |
625 | |
626 | case TS_REJECT: /* function reject */ | |
627 | if (state == SIO && sc->sc_sts.s_xs0 & TS_WLE) | |
628 | printf("ts%d: write locked\n", TSUNIT(bp->b_dev)); | |
629 | if ((sc->sc_sts.s_xs0 & TS_ONL) == 0) | |
630 | printf("ts%d: offline\n", TSUNIT(bp->b_dev)); | |
9bad5ea5 BJ |
631 | break; |
632 | } | |
30a7bcbf BJ |
633 | /* |
634 | * Couldn't recover error | |
635 | */ | |
636 | printf("ts%d: hard error bn%d xs0=%b\n", TSUNIT(bp->b_dev), | |
637 | bp->b_blkno, sc->sc_sts.s_xs0, TSXS0_BITS); | |
638 | bp->b_flags |= B_ERROR; | |
639 | goto opdone; | |
9bad5ea5 | 640 | } |
30a7bcbf BJ |
641 | /* |
642 | * Advance tape control FSM. | |
643 | */ | |
644 | ignoreerr: | |
645 | switch (state) { | |
646 | ||
9bad5ea5 | 647 | case SIO: |
30a7bcbf BJ |
648 | /* |
649 | * Read/write increments tape block number | |
650 | */ | |
651 | sc->sc_blkno++; | |
652 | goto opdone; | |
653 | ||
9bad5ea5 | 654 | case SCOM: |
30a7bcbf BJ |
655 | /* |
656 | * For forward/backward space record update current position. | |
657 | */ | |
658 | if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) | |
659 | switch (bp->b_command) { | |
660 | ||
661 | case TS_SFORW: | |
662 | sc->sc_blkno += bp->b_repcnt; | |
663 | break; | |
9bad5ea5 | 664 | |
30a7bcbf BJ |
665 | case TS_SREV: |
666 | sc->sc_blkno -= bp->b_repcnt; | |
667 | break; | |
668 | } | |
669 | goto opdone; | |
670 | ||
671 | case SSEEK: | |
672 | sc->sc_blkno = dbtofsb(bp->b_blkno); | |
673 | goto opcont; | |
9bad5ea5 BJ |
674 | |
675 | default: | |
30a7bcbf | 676 | panic("tsintr"); |
9bad5ea5 | 677 | } |
30a7bcbf BJ |
678 | opdone: |
679 | /* | |
680 | * Reset error count and remove | |
681 | * from device queue. | |
682 | */ | |
683 | um->um_tab.b_errcnt = 0; | |
30e0abb3 | 684 | um->um_tab.b_actf->b_actf = bp->av_forw; |
30a7bcbf BJ |
685 | bp->b_resid = sc->sc_sts.s_rbpcr; |
686 | ubadone(um); | |
30e0abb3 | 687 | printd(" iodone\n"); |
30a7bcbf | 688 | iodone(bp); |
30e0abb3 | 689 | if (um->um_tab.b_actf->b_actf == 0) |
30a7bcbf BJ |
690 | return; |
691 | opcont: | |
692 | tsstart(um); | |
693 | } | |
694 | ||
695 | tsseteof(bp) | |
696 | register struct buf *bp; | |
697 | { | |
698 | register int tsunit = TSUNIT(bp->b_dev); | |
699 | register struct ts_softc *sc = &ts_softc[tsunit]; | |
700 | ||
701 | if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) { | |
702 | if (sc->sc_blkno > dbtofsb(bp->b_blkno)) { | |
703 | /* reversing */ | |
704 | sc->sc_nxrec = dbtofsb(bp->b_blkno) - sc->sc_sts.s_rbpcr; | |
705 | sc->sc_blkno = sc->sc_nxrec; | |
706 | } else { | |
707 | /* spacing forward */ | |
708 | sc->sc_blkno = dbtofsb(bp->b_blkno) + sc->sc_sts.s_rbpcr; | |
709 | sc->sc_nxrec = sc->sc_blkno - 1; | |
9bad5ea5 | 710 | } |
30a7bcbf BJ |
711 | return; |
712 | } | |
713 | /* eof on read */ | |
714 | sc->sc_nxrec = dbtofsb(bp->b_blkno); | |
9bad5ea5 BJ |
715 | } |
716 | ||
717 | tsread(dev) | |
30a7bcbf | 718 | dev_t dev; |
9bad5ea5 | 719 | { |
30a7bcbf | 720 | |
9bad5ea5 | 721 | tsphys(dev); |
30a7bcbf BJ |
722 | if (u.u_error) |
723 | return; | |
724 | physio(tsstrategy, &rtsbuf[TSUNIT(dev)], dev, B_READ, minphys); | |
9bad5ea5 BJ |
725 | } |
726 | ||
727 | tswrite(dev) | |
30a7bcbf | 728 | dev_t dev; |
9bad5ea5 | 729 | { |
30a7bcbf | 730 | |
9bad5ea5 | 731 | tsphys(dev); |
30a7bcbf BJ |
732 | if (u.u_error) |
733 | return; | |
734 | physio(tsstrategy, &rtsbuf[TSUNIT(dev)], dev, B_WRITE, minphys); | |
9bad5ea5 BJ |
735 | } |
736 | ||
30a7bcbf BJ |
737 | /* |
738 | * Check that a raw device exists. | |
739 | * If it does, set up sc_blkno and sc_nxrec | |
740 | * so that the tape will appear positioned correctly. | |
741 | */ | |
9bad5ea5 | 742 | tsphys(dev) |
30a7bcbf | 743 | dev_t dev; |
9bad5ea5 | 744 | { |
30a7bcbf BJ |
745 | register int tsunit = TSUNIT(dev); |
746 | register daddr_t a; | |
747 | register struct ts_softc *sc; | |
748 | register struct uba_device *ui; | |
9bad5ea5 | 749 | |
30a7bcbf BJ |
750 | if (tsunit >= NTS || (ui=tsdinfo[tsunit]) == 0 || ui->ui_alive == 0) { |
751 | u.u_error = ENXIO; | |
752 | return; | |
753 | } | |
754 | sc = &ts_softc[tsunit]; | |
755 | a = dbtofsb(u.u_offset >> 9); | |
756 | sc->sc_blkno = a; | |
757 | sc->sc_nxrec = a + 1; | |
9bad5ea5 | 758 | } |
f0a3ddbd | 759 | |
30a7bcbf BJ |
760 | tsreset(uban) |
761 | int uban; | |
f0a3ddbd | 762 | { |
30a7bcbf BJ |
763 | register struct uba_ctlr *um; |
764 | register ts11; | |
765 | register struct buf *dp; | |
766 | ||
767 | for (ts11 = 0; ts11 < NTS; ts11++) { | |
768 | if ((um = tsminfo[ts11]) == 0 || um->um_alive == 0 || | |
769 | um->um_ubanum != uban) | |
770 | continue; | |
771 | printf(" ts%d", ts11); | |
772 | um->um_tab.b_active = 0; | |
773 | um->um_tab.b_actf = um->um_tab.b_actl = 0; | |
774 | ts_softc[ts11].sc_openf = -1; | |
775 | if (um->um_ubinfo) { | |
776 | printf("<%d>", (um->um_ubinfo>>28)&0xf); | |
777 | ubadone(um); | |
778 | } | |
779 | tsinit(ts11); | |
780 | tsstart(um); | |
f0a3ddbd | 781 | } |
f0a3ddbd BJ |
782 | } |
783 | ||
30a7bcbf BJ |
784 | /*ARGSUSED*/ |
785 | tsioctl(dev, cmd, addr, flag) | |
786 | caddr_t addr; | |
787 | dev_t dev; | |
f0a3ddbd | 788 | { |
30a7bcbf BJ |
789 | int tsunit = TSUNIT(dev); |
790 | register struct ts_softc *sc = &ts_softc[tsunit]; | |
791 | register struct buf *bp = &ctsbuf[TSUNIT(dev)]; | |
792 | register callcount; | |
793 | int fcount; | |
794 | struct mtop mtop; | |
795 | struct mtget mtget; | |
796 | /* we depend of the values and order of the MT codes here */ | |
797 | static tsops[] = | |
798 | {TS_WEOF,TS_SFORW,TS_SREV,TS_SFORWF,TS_SREVF,TS_REW,TS_OFFL,TS_SENSE}; | |
799 | ||
800 | switch (cmd) { | |
801 | case MTIOCTOP: /* tape operation */ | |
802 | if (copyin((caddr_t)addr, (caddr_t)&mtop, sizeof(mtop))) { | |
803 | u.u_error = EFAULT; | |
804 | return; | |
805 | } | |
806 | switch(mtop.mt_op) { | |
807 | case MTWEOF: | |
808 | callcount = mtop.mt_count; | |
809 | fcount = 1; | |
810 | break; | |
811 | case MTFSF: case MTBSF: | |
812 | case MTFSR: case MTBSR: | |
813 | callcount = 1; | |
814 | fcount = mtop.mt_count; | |
815 | break; | |
816 | case MTREW: case MTOFFL: case MTNOP: | |
817 | callcount = 1; | |
818 | fcount = 1; | |
819 | break; | |
820 | default: | |
821 | u.u_error = ENXIO; | |
822 | return; | |
823 | } | |
824 | if (callcount <= 0 || fcount <= 0) { | |
825 | u.u_error = ENXIO; | |
826 | return; | |
827 | } | |
828 | while (--callcount >= 0) { | |
829 | tscommand(dev, tsops[mtop.mt_op], fcount); | |
830 | if ((mtop.mt_op == MTFSR || mtop.mt_op == MTBSR) && | |
831 | bp->b_resid) { | |
832 | u.u_error = EIO; | |
833 | break; | |
834 | } | |
835 | if ((bp->b_flags&B_ERROR) || sc->sc_sts.s_xs0&TS_BOT) | |
836 | break; | |
837 | } | |
838 | geterror(bp); | |
839 | return; | |
840 | case MTIOCGET: | |
841 | mtget.mt_dsreg = 0; | |
842 | mtget.mt_erreg = sc->sc_sts.s_xs0; | |
843 | mtget.mt_resid = sc->sc_resid; | |
e320a1c9 | 844 | mtget.mt_type = MT_ISTS; |
30a7bcbf BJ |
845 | if (copyout((caddr_t)&mtget, addr, sizeof(mtget))) |
846 | u.u_error = EFAULT; | |
847 | return; | |
848 | default: | |
849 | u.u_error = ENXIO; | |
850 | } | |
f0a3ddbd BJ |
851 | } |
852 | ||
30a7bcbf | 853 | #define DBSIZE 20 |
f0a3ddbd | 854 | |
30a7bcbf BJ |
855 | tsdump() |
856 | { | |
857 | register struct uba_device *ui; | |
858 | register struct uba_regs *up; | |
859 | register struct device *addr; | |
860 | int blk, num; | |
861 | int start; | |
862 | ||
863 | start = 0; | |
864 | num = maxfree; | |
865 | #define phys(a,b) ((b)((int)(a)&0x7fffffff)) | |
866 | if (tsdinfo[0] == 0) | |
867 | return (ENXIO); | |
868 | ui = phys(tsdinfo[0], struct uba_device *); | |
869 | up = phys(ui->ui_hd, struct uba_hd *)->uh_physuba; | |
30e0abb3 | 870 | ubainit(up); |
30a7bcbf BJ |
871 | DELAY(1000000); |
872 | addr = (struct device *)ui->ui_physaddr; | |
873 | addr->tssr = 0; | |
874 | tswait(addr); | |
875 | while (num > 0) { | |
876 | blk = num > DBSIZE ? DBSIZE : num; | |
877 | tsdwrite(start, blk, addr, up); | |
878 | start += blk; | |
879 | num -= blk; | |
880 | } | |
881 | tseof(addr); | |
882 | tseof(addr); | |
883 | tswait(addr); | |
884 | if (addr->tssr&TS_SC) | |
885 | return (EIO); | |
886 | addr->tssr = 0; | |
887 | tswait(addr); | |
888 | return (0); | |
f0a3ddbd BJ |
889 | } |
890 | ||
30a7bcbf BJ |
891 | tsdwrite(dbuf, num, addr, up) |
892 | register dbuf, num; | |
893 | register struct device *addr; | |
894 | struct uba_regs *up; | |
f0a3ddbd | 895 | { |
30a7bcbf BJ |
896 | register struct pte *io; |
897 | register int npf; | |
898 | ||
899 | tswait(addr); | |
900 | io = up->uba_map; | |
901 | npf = num+1; | |
902 | while (--npf != 0) | |
903 | *(int *)io++ = (dbuf++ | (1<<UBAMR_DPSHIFT) | UBAMR_MRV); | |
904 | *(int *)io = 0; | |
905 | #ifdef notyet | |
906 | addr->tsbc = -(num*NBPG); | |
907 | addr->tsba = 0; | |
908 | addr->tscs = TS_WCOM | TM_GO; | |
909 | #endif | |
f0a3ddbd BJ |
910 | } |
911 | ||
30a7bcbf BJ |
912 | tswait(addr) |
913 | register struct device *addr; | |
f0a3ddbd | 914 | { |
30a7bcbf | 915 | register s; |
f0a3ddbd | 916 | |
30a7bcbf BJ |
917 | do |
918 | s = addr->tssr; | |
919 | while ((s & TS_SSR) == 0); | |
f0a3ddbd BJ |
920 | } |
921 | ||
30a7bcbf BJ |
922 | tseof(addr) |
923 | struct device *addr; | |
f0a3ddbd | 924 | { |
30a7bcbf BJ |
925 | |
926 | tswait(addr); | |
927 | #ifdef notyet | |
928 | addr->tscs = TS_WEOF | TM_GO; | |
929 | #endif | |
f0a3ddbd | 930 | } |
9bad5ea5 | 931 | #endif |