Commit | Line | Data |
---|---|---|
0cc9b5a9 | 1 | #define UPECCDEBUG |
e015c0cb | 2 | /* up.c 4.43 82/03/24 */ |
008c0481 | 3 | |
66b4fb09 | 4 | #include "up.h" |
a3cb8f60 | 5 | #if NSC > 0 |
008c0481 | 6 | /* |
10fb932f | 7 | * UNIBUS disk driver with overlapped seeks and ECC recovery. |
0c48c799 BJ |
8 | * |
9 | * TODO: | |
0c48c799 | 10 | * Add bad sector forwarding code |
299d67ed | 11 | * Check that offset recovery code works |
008c0481 BJ |
12 | */ |
13 | ||
14 | #include "../h/param.h" | |
15 | #include "../h/systm.h" | |
3f3a34c3 BJ |
16 | #include "../h/cpu.h" |
17 | #include "../h/nexus.h" | |
41888f16 | 18 | #include "../h/dk.h" |
008c0481 BJ |
19 | #include "../h/buf.h" |
20 | #include "../h/conf.h" | |
21 | #include "../h/dir.h" | |
22 | #include "../h/user.h" | |
23 | #include "../h/map.h" | |
80e7c811 | 24 | #include "../h/pte.h" |
008c0481 | 25 | #include "../h/mtpr.h" |
008c0481 | 26 | #include "../h/vm.h" |
89bd2f01 BJ |
27 | #include "../h/ubavar.h" |
28 | #include "../h/ubareg.h" | |
0ff318b2 | 29 | #include "../h/cmap.h" |
008c0481 | 30 | |
0ff318b2 | 31 | #include "../h/upreg.h" |
008c0481 | 32 | |
3f3a34c3 BJ |
33 | struct up_softc { |
34 | int sc_softas; | |
71236e46 | 35 | int sc_ndrive; |
3f3a34c3 | 36 | int sc_wticks; |
736772ef | 37 | int sc_recal; |
a3cb8f60 | 38 | } up_softc[NSC]; |
008c0481 | 39 | |
3f3a34c3 | 40 | /* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */ |
008c0481 BJ |
41 | struct size |
42 | { | |
43 | daddr_t nblocks; | |
44 | int cyloff; | |
45 | } up_sizes[8] = { | |
46 | 15884, 0, /* A=cyl 0 thru 26 */ | |
47 | 33440, 27, /* B=cyl 27 thru 81 */ | |
d1778415 | 48 | 495520, 0, /* C=cyl 0 thru 814 */ |
008c0481 BJ |
49 | 15884, 562, /* D=cyl 562 thru 588 */ |
50 | 55936, 589, /* E=cyl 589 thru 680 */ | |
0d728200 BJ |
51 | #ifndef NOBADSECT |
52 | 81376, 681, /* F=cyl 681 thru 814 */ | |
53 | 153728, 562, /* G=cyl 562 thru 814 */ | |
54 | #else | |
55 | 81472, 681, | |
56 | 153824, 562, | |
57 | #endif | |
008c0481 | 58 | 291346, 82, /* H=cyl 82 thru 561 */ |
3f3a34c3 BJ |
59 | }, fj_sizes[8] = { |
60 | 15884, 0, /* A=cyl 0 thru 49 */ | |
61 | 33440, 50, /* B=cyl 50 thru 154 */ | |
62 | 263360, 0, /* C=cyl 0 thru 822 */ | |
63 | 0, 0, | |
64 | 0, 0, | |
65 | 0, 0, | |
66 | 0, 0, | |
0d728200 BJ |
67 | #ifndef NOBADSECT |
68 | 213664, 155, /* H=cyl 155 thru 822 */ | |
69 | #else | |
70 | 213760, 155, | |
71 | #endif | |
0cc9b5a9 BJ |
72 | }, am_sizes[8] = { |
73 | 15884, 0, /* A=cyl 0 thru 31 */ | |
74 | 33440, 32, /* B=cyl 32 thru 97 */ | |
75 | 524288, 0, /* C=cyl 0 thru 1023 */ | |
76 | 0, 0, | |
77 | 0, 0, | |
78 | 0, 0, | |
79 | 181760, 668, /* G=cyl 668 thru 1022 */ | |
80 | 291346, 98, /* H=cyl 98 thru 667 */ | |
008c0481 | 81 | }; |
3f3a34c3 | 82 | /* END OF STUFF WHICH SHOULD BE READ IN PER DISK */ |
008c0481 | 83 | |
3f3a34c3 BJ |
84 | #define _upSDIST 2 /* 1.0 msec */ |
85 | #define _upRDIST 4 /* 2.0 msec */ | |
86 | ||
87 | int upSDIST = _upSDIST; | |
88 | int upRDIST = _upRDIST; | |
89 | ||
71236e46 | 90 | int upprobe(), upslave(), upattach(), updgo(), upintr(); |
89bd2f01 BJ |
91 | struct uba_ctlr *upminfo[NSC]; |
92 | struct uba_device *updinfo[NUP]; | |
93 | struct uba_device *upip[NSC][4]; | |
d763a2b7 | 94 | |
71236e46 | 95 | u_short upstd[] = { 0776700, 0774400, 0776300, 0 }; |
0801d37f | 96 | struct uba_driver scdriver = |
71236e46 | 97 | { upprobe, upslave, upattach, updgo, upstd, "up", updinfo, "sc", upminfo }; |
3f3a34c3 BJ |
98 | struct buf uputab[NUP]; |
99 | ||
100 | struct upst { | |
101 | short nsect; | |
102 | short ntrak; | |
103 | short nspc; | |
104 | short ncyl; | |
105 | struct size *sizes; | |
106 | } upst[] = { | |
71236e46 BJ |
107 | 32, 19, 32*19, 823, up_sizes, /* 9300/cdc */ |
108 | /* 9300 actually has 815 cylinders... */ | |
3f3a34c3 | 109 | 32, 10, 32*10, 823, fj_sizes, /* fujitsu 160m */ |
0cc9b5a9 | 110 | 32, 16, 32*16, 1024, am_sizes, /* fujitsu 160m */ |
3f3a34c3 | 111 | }; |
008c0481 | 112 | |
2601dfbd | 113 | u_char up_offset[16] = { |
299d67ed BJ |
114 | UPOF_P400, UPOF_M400, UPOF_P400, UPOF_M400, |
115 | UPOF_P800, UPOF_M800, UPOF_P800, UPOF_M800, | |
116 | UPOF_P1200, UPOF_M1200, UPOF_P1200, UPOF_M1200, | |
117 | 0, 0, 0, 0 | |
2601dfbd | 118 | }; |
008c0481 | 119 | |
0801d37f | 120 | struct buf rupbuf[NUP]; |
008c0481 | 121 | |
008c0481 BJ |
122 | #define b_cylin b_resid |
123 | ||
008c0481 BJ |
124 | #ifdef INTRLVE |
125 | daddr_t dkblock(); | |
126 | #endif | |
3f3a34c3 BJ |
127 | |
128 | int upwstart, upwatch(); /* Have started guardian */ | |
7e00c42b | 129 | int upseek; |
f88f8fdb | 130 | int upwaitdry; |
3f3a34c3 BJ |
131 | |
132 | /*ARGSUSED*/ | |
71236e46 | 133 | upprobe(reg) |
3f3a34c3 | 134 | caddr_t reg; |
008c0481 | 135 | { |
d763a2b7 BJ |
136 | register int br, cvec; |
137 | ||
71236e46 BJ |
138 | #ifdef lint |
139 | br = 0; cvec = br; br = cvec; | |
140 | #endif | |
2601dfbd | 141 | ((struct updevice *)reg)->upcs1 = UP_IE|UP_RDY; |
71236e46 | 142 | DELAY(10); |
2601dfbd | 143 | ((struct updevice *)reg)->upcs1 = 0; |
d763a2b7 | 144 | return (1); |
3f3a34c3 BJ |
145 | } |
146 | ||
71236e46 | 147 | upslave(ui, reg) |
89bd2f01 | 148 | struct uba_device *ui; |
3f3a34c3 BJ |
149 | caddr_t reg; |
150 | { | |
2601dfbd | 151 | register struct updevice *upaddr = (struct updevice *)reg; |
3f3a34c3 BJ |
152 | |
153 | upaddr->upcs1 = 0; /* conservative */ | |
71236e46 | 154 | upaddr->upcs2 = ui->ui_slave; |
299d67ed | 155 | if (upaddr->upcs2&UPCS2_NED) { |
2601dfbd | 156 | upaddr->upcs1 = UP_DCLR|UP_GO; |
3f3a34c3 BJ |
157 | return (0); |
158 | } | |
71236e46 BJ |
159 | return (1); |
160 | } | |
161 | ||
162 | upattach(ui) | |
89bd2f01 | 163 | register struct uba_device *ui; |
71236e46 | 164 | { |
2601dfbd | 165 | register struct updevice *upaddr; |
71236e46 | 166 | |
6a81870e | 167 | if (upwstart == 0) { |
7780575a | 168 | timeout(upwatch, (caddr_t)0, hz); |
6a81870e BJ |
169 | upwstart++; |
170 | } | |
b7333467 BJ |
171 | if (ui->ui_dk >= 0) |
172 | dk_mspw[ui->ui_dk] = .0000020345; | |
71236e46 BJ |
173 | upip[ui->ui_ctlr][ui->ui_slave] = ui; |
174 | up_softc[ui->ui_ctlr].sc_ndrive++; | |
2601dfbd BJ |
175 | upaddr = (struct updevice *)ui->ui_addr; |
176 | upaddr->upcs1 = 0; | |
177 | upaddr->upcs2 = ui->ui_slave; | |
26e15512 | 178 | upaddr->uphr = UPHR_MAXTRAK; |
c6a51a7b | 179 | if (upaddr->uphr == 9) |
26e15512 | 180 | ui->ui_type = 1; /* fujitsu hack */ |
0cc9b5a9 BJ |
181 | else if (upaddr->uphr == 15) |
182 | ui->ui_type = 2; /* ampex hack */ | |
26e15512 BJ |
183 | upaddr->upcs2 = UPCS2_CLR; |
184 | /* | |
185 | upaddr->uphr = UPHR_MAXCYL; | |
186 | printf("maxcyl %d\n", upaddr->uphr); | |
187 | upaddr->uphr = UPHR_MAXTRAK; | |
188 | printf("maxtrak %d\n", upaddr->uphr); | |
189 | upaddr->uphr = UPHR_MAXSECT; | |
190 | printf("maxsect %d\n", upaddr->uphr); | |
191 | */ | |
3f3a34c3 BJ |
192 | } |
193 | ||
3f3a34c3 BJ |
194 | upstrategy(bp) |
195 | register struct buf *bp; | |
196 | { | |
89bd2f01 | 197 | register struct uba_device *ui; |
3f3a34c3 BJ |
198 | register struct upst *st; |
199 | register int unit; | |
7e00c42b | 200 | register struct buf *dp; |
3f3a34c3 | 201 | int xunit = minor(bp->b_dev) & 07; |
7e00c42b | 202 | long bn, sz; |
3f3a34c3 | 203 | |
7e00c42b | 204 | sz = (bp->b_bcount+511) >> 9; |
008c0481 | 205 | unit = dkunit(bp); |
3f3a34c3 BJ |
206 | if (unit >= NUP) |
207 | goto bad; | |
208 | ui = updinfo[unit]; | |
209 | if (ui == 0 || ui->ui_alive == 0) | |
210 | goto bad; | |
211 | st = &upst[ui->ui_type]; | |
212 | if (bp->b_blkno < 0 || | |
213 | (bn = dkblock(bp))+sz > st->sizes[xunit].nblocks) | |
214 | goto bad; | |
215 | bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff; | |
0cc9b5a9 | 216 | (void) spl5(); |
7e00c42b BJ |
217 | dp = &uputab[ui->ui_unit]; |
218 | disksort(dp, bp); | |
219 | if (dp->b_active == 0) { | |
3f3a34c3 BJ |
220 | (void) upustart(ui); |
221 | bp = &ui->ui_mi->um_tab; | |
222 | if (bp->b_actf && bp->b_active == 0) | |
223 | (void) upstart(ui->ui_mi); | |
008c0481 | 224 | } |
0cc9b5a9 | 225 | (void) spl0(); |
3f3a34c3 BJ |
226 | return; |
227 | ||
228 | bad: | |
229 | bp->b_flags |= B_ERROR; | |
230 | iodone(bp); | |
231 | return; | |
008c0481 BJ |
232 | } |
233 | ||
736772ef BJ |
234 | /* |
235 | * Unit start routine. | |
236 | * Seek the drive to be where the data is | |
237 | * and then generate another interrupt | |
238 | * to actually start the transfer. | |
239 | * If there is only one drive on the controller, | |
240 | * or we are very close to the data, don't | |
241 | * bother with the search. If called after | |
242 | * searching once, don't bother to look where | |
243 | * we are, just queue for transfer (to avoid | |
244 | * positioning forever without transferrring.) | |
245 | */ | |
3f3a34c3 | 246 | upustart(ui) |
89bd2f01 | 247 | register struct uba_device *ui; |
008c0481 BJ |
248 | { |
249 | register struct buf *bp, *dp; | |
89bd2f01 | 250 | register struct uba_ctlr *um; |
2601dfbd | 251 | register struct updevice *upaddr; |
3f3a34c3 | 252 | register struct upst *st; |
008c0481 | 253 | daddr_t bn; |
736772ef | 254 | int sn, csn; |
71236e46 BJ |
255 | /* |
256 | * The SC21 cancels commands if you just say | |
2601dfbd | 257 | * cs1 = UP_IE |
71236e46 BJ |
258 | * so we are cautious about handling of cs1. |
259 | * Also don't bother to clear as bits other than in upintr(). | |
260 | */ | |
736772ef BJ |
261 | int didie = 0; |
262 | ||
263 | if (ui == 0) | |
264 | return (0); | |
89bd2f01 | 265 | um = ui->ui_mi; |
3f3a34c3 BJ |
266 | dk_busy &= ~(1<<ui->ui_dk); |
267 | dp = &uputab[ui->ui_unit]; | |
7bc8d985 | 268 | if ((bp = dp->b_actf) == NULL) |
eb891eaa | 269 | goto out; |
736772ef BJ |
270 | /* |
271 | * If the controller is active, just remember | |
272 | * that this device would like to be positioned... | |
273 | * if we tried to position now we would confuse the SC21. | |
274 | */ | |
3f3a34c3 | 275 | if (um->um_tab.b_active) { |
d763a2b7 | 276 | up_softc[um->um_ctlr].sc_softas |= 1<<ui->ui_slave; |
2a3b9a7f BJ |
277 | return (0); |
278 | } | |
736772ef BJ |
279 | /* |
280 | * If we have already positioned this drive, | |
281 | * then just put it on the ready queue. | |
282 | */ | |
a3f430e0 BJ |
283 | if (dp->b_active) |
284 | goto done; | |
285 | dp->b_active = 1; | |
2601dfbd | 286 | upaddr = (struct updevice *)um->um_addr; |
3f3a34c3 | 287 | upaddr->upcs2 = ui->ui_slave; |
736772ef BJ |
288 | /* |
289 | * If drive has just come up, | |
290 | * setup the pack. | |
291 | */ | |
299d67ed | 292 | if ((upaddr->upds & UPDS_VV) == 0) { |
71236e46 | 293 | /* SHOULD WARN SYSTEM THAT THIS HAPPENED */ |
2601dfbd BJ |
294 | upaddr->upcs1 = UP_IE|UP_DCLR|UP_GO; |
295 | upaddr->upcs1 = UP_IE|UP_PRESET|UP_GO; | |
299d67ed | 296 | upaddr->upof = UPOF_FMT22; |
eb891eaa | 297 | didie = 1; |
008c0481 | 298 | } |
736772ef BJ |
299 | /* |
300 | * If drive is offline, forget about positioning. | |
301 | */ | |
299d67ed | 302 | if ((upaddr->upds & (UPDS_DPR|UPDS_MOL)) != (UPDS_DPR|UPDS_MOL)) |
2a3b9a7f | 303 | goto done; |
736772ef BJ |
304 | /* |
305 | * If there is only one drive, | |
306 | * dont bother searching. | |
307 | */ | |
71236e46 BJ |
308 | if (up_softc[um->um_ctlr].sc_ndrive == 1) |
309 | goto done; | |
736772ef BJ |
310 | /* |
311 | * Figure out where this transfer is going to | |
312 | * and see if we are close enough to justify not searching. | |
313 | */ | |
3f3a34c3 | 314 | st = &upst[ui->ui_type]; |
008c0481 | 315 | bn = dkblock(bp); |
3f3a34c3 BJ |
316 | sn = bn%st->nspc; |
317 | sn = (sn + st->nsect - upSDIST) % st->nsect; | |
736772ef | 318 | if (bp->b_cylin - upaddr->updc) |
7bc8d985 | 319 | goto search; /* Not on-cylinder */ |
2a3b9a7f BJ |
320 | else if (upseek) |
321 | goto done; /* Ok just to be on-cylinder */ | |
008c0481 | 322 | csn = (upaddr->upla>>6) - sn - 1; |
7bc8d985 | 323 | if (csn < 0) |
3f3a34c3 BJ |
324 | csn += st->nsect; |
325 | if (csn > st->nsect - upRDIST) | |
008c0481 | 326 | goto done; |
008c0481 | 327 | search: |
736772ef BJ |
328 | upaddr->updc = bp->b_cylin; |
329 | /* | |
330 | * Not on cylinder at correct position, | |
331 | * seek/search. | |
332 | */ | |
2a3b9a7f | 333 | if (upseek) |
2601dfbd | 334 | upaddr->upcs1 = UP_IE|UP_SEEK|UP_GO; |
7e00c42b | 335 | else { |
2a3b9a7f | 336 | upaddr->upda = sn; |
2601dfbd | 337 | upaddr->upcs1 = UP_IE|UP_SEARCH|UP_GO; |
2a3b9a7f | 338 | } |
eb891eaa | 339 | didie = 1; |
736772ef BJ |
340 | /* |
341 | * Mark unit busy for iostat. | |
342 | */ | |
3f3a34c3 BJ |
343 | if (ui->ui_dk >= 0) { |
344 | dk_busy |= 1<<ui->ui_dk; | |
345 | dk_seek[ui->ui_dk]++; | |
008c0481 | 346 | } |
eb891eaa | 347 | goto out; |
008c0481 | 348 | done: |
736772ef BJ |
349 | /* |
350 | * Device is ready to go. | |
351 | * Put it on the ready queue for the controller | |
352 | * (unless its already there.) | |
353 | */ | |
2601dfbd BJ |
354 | if (dp->b_active != 2) { |
355 | dp->b_forw = NULL; | |
356 | if (um->um_tab.b_actf == NULL) | |
357 | um->um_tab.b_actf = dp; | |
358 | else | |
359 | um->um_tab.b_actl->b_forw = dp; | |
360 | um->um_tab.b_actl = dp; | |
361 | dp->b_active = 2; | |
362 | } | |
eb891eaa BJ |
363 | out: |
364 | return (didie); | |
008c0481 BJ |
365 | } |
366 | ||
736772ef BJ |
367 | /* |
368 | * Start up a transfer on a drive. | |
369 | */ | |
3f3a34c3 | 370 | upstart(um) |
89bd2f01 | 371 | register struct uba_ctlr *um; |
008c0481 BJ |
372 | { |
373 | register struct buf *bp, *dp; | |
89bd2f01 | 374 | register struct uba_device *ui; |
2601dfbd | 375 | register struct updevice *upaddr; |
7e00c42b | 376 | struct upst *st; |
008c0481 | 377 | daddr_t bn; |
f88f8fdb | 378 | int dn, sn, tn, cmd, waitdry; |
008c0481 | 379 | |
008c0481 | 380 | loop: |
736772ef BJ |
381 | /* |
382 | * Pull a request off the controller queue | |
383 | */ | |
3f3a34c3 | 384 | if ((dp = um->um_tab.b_actf) == NULL) |
eb891eaa | 385 | return (0); |
008c0481 | 386 | if ((bp = dp->b_actf) == NULL) { |
3f3a34c3 | 387 | um->um_tab.b_actf = dp->b_forw; |
008c0481 BJ |
388 | goto loop; |
389 | } | |
736772ef BJ |
390 | /* |
391 | * Mark controller busy, and | |
392 | * determine destination of this request. | |
393 | */ | |
3f3a34c3 BJ |
394 | um->um_tab.b_active++; |
395 | ui = updinfo[dkunit(bp)]; | |
008c0481 | 396 | bn = dkblock(bp); |
3f3a34c3 BJ |
397 | dn = ui->ui_slave; |
398 | st = &upst[ui->ui_type]; | |
399 | sn = bn%st->nspc; | |
400 | tn = sn/st->nsect; | |
401 | sn %= st->nsect; | |
2601dfbd | 402 | upaddr = (struct updevice *)ui->ui_addr; |
736772ef BJ |
403 | /* |
404 | * Select drive if not selected already. | |
405 | */ | |
406 | if ((upaddr->upcs2&07) != dn) | |
407 | upaddr->upcs2 = dn; | |
408 | /* | |
409 | * Check that it is ready and online | |
410 | */ | |
f88f8fdb | 411 | waitdry = 0; |
299d67ed | 412 | while ((upaddr->upds&UPDS_DRY) == 0) { |
f88f8fdb BJ |
413 | if (++waitdry > 512) |
414 | break; | |
415 | upwaitdry++; | |
416 | } | |
299d67ed | 417 | if ((upaddr->upds & UPDS_DREADY) != UPDS_DREADY) { |
f6d201ff | 418 | printf("up%d: not ready", dkunit(bp)); |
299d67ed | 419 | if ((upaddr->upds & UPDS_DREADY) != UPDS_DREADY) { |
71236e46 | 420 | printf("\n"); |
3f3a34c3 BJ |
421 | um->um_tab.b_active = 0; |
422 | um->um_tab.b_errcnt = 0; | |
88253fd2 BJ |
423 | dp->b_actf = bp->av_forw; |
424 | dp->b_active = 0; | |
425 | bp->b_flags |= B_ERROR; | |
426 | iodone(bp); | |
88253fd2 BJ |
427 | goto loop; |
428 | } | |
736772ef BJ |
429 | /* |
430 | * Oh, well, sometimes this | |
431 | * happens, for reasons unknown. | |
432 | */ | |
2601dfbd | 433 | printf(" (flakey)\n"); |
008c0481 | 434 | } |
736772ef BJ |
435 | /* |
436 | * Setup for the transfer, and get in the | |
437 | * UNIBUS adaptor queue. | |
438 | */ | |
5aa9d5ea | 439 | upaddr->updc = bp->b_cylin; |
008c0481 | 440 | upaddr->upda = (tn << 8) + sn; |
008c0481 BJ |
441 | upaddr->upwc = -bp->b_bcount / sizeof (short); |
442 | if (bp->b_flags & B_READ) | |
2601dfbd | 443 | cmd = UP_IE|UP_RCOM|UP_GO; |
008c0481 | 444 | else |
2601dfbd | 445 | cmd = UP_IE|UP_WCOM|UP_GO; |
b7333467 | 446 | um->um_cmd = cmd; |
a0eab615 | 447 | (void) ubago(ui); |
eb891eaa | 448 | return (1); |
008c0481 BJ |
449 | } |
450 | ||
736772ef BJ |
451 | /* |
452 | * Now all ready to go, stuff the registers. | |
453 | */ | |
b7333467 | 454 | updgo(um) |
89bd2f01 | 455 | struct uba_ctlr *um; |
3f3a34c3 | 456 | { |
2601dfbd | 457 | register struct updevice *upaddr = (struct updevice *)um->um_addr; |
7e00c42b | 458 | |
b7333467 BJ |
459 | upaddr->upba = um->um_ubinfo; |
460 | upaddr->upcs1 = um->um_cmd|((um->um_ubinfo>>8)&0x300); | |
3f3a34c3 BJ |
461 | } |
462 | ||
736772ef BJ |
463 | /* |
464 | * Handle a disk interrupt. | |
465 | */ | |
443c8066 | 466 | upintr(sc21) |
3f3a34c3 | 467 | register sc21; |
008c0481 BJ |
468 | { |
469 | register struct buf *bp, *dp; | |
89bd2f01 BJ |
470 | register struct uba_ctlr *um = upminfo[sc21]; |
471 | register struct uba_device *ui; | |
2601dfbd | 472 | register struct updevice *upaddr = (struct updevice *)um->um_addr; |
008c0481 | 473 | register unit; |
7e00c42b | 474 | struct up_softc *sc = &up_softc[um->um_ctlr]; |
71236e46 | 475 | int as = (upaddr->upas & 0377) | sc->sc_softas; |
f88f8fdb | 476 | int needie = 1, waitdry; |
008c0481 | 477 | |
7e00c42b | 478 | sc->sc_wticks = 0; |
71236e46 | 479 | sc->sc_softas = 0; |
736772ef BJ |
480 | /* |
481 | * If controller wasn't transferring, then this is an | |
482 | * interrupt for attention status on seeking drives. | |
483 | * Just service them. | |
484 | */ | |
485 | if (um->um_tab.b_active == 0) { | |
486 | if (upaddr->upcs1 & UP_TRE) | |
487 | upaddr->upcs1 = UP_TRE; | |
488 | goto doattn; | |
489 | } | |
736772ef BJ |
490 | /* |
491 | * Get device and block structures, and a pointer | |
89bd2f01 | 492 | * to the uba_device for the drive. Select the drive. |
736772ef BJ |
493 | */ |
494 | dp = um->um_tab.b_actf; | |
495 | bp = dp->b_actf; | |
496 | ui = updinfo[dkunit(bp)]; | |
497 | dk_busy &= ~(1 << ui->ui_dk); | |
498 | if ((upaddr->upcs2&07) != ui->ui_slave) | |
3f3a34c3 | 499 | upaddr->upcs2 = ui->ui_slave; |
736772ef BJ |
500 | /* |
501 | * Check for and process errors on | |
502 | * either the drive or the controller. | |
503 | */ | |
299d67ed | 504 | if ((upaddr->upds&UPDS_ERR) || (upaddr->upcs1&UP_TRE)) { |
f88f8fdb | 505 | waitdry = 0; |
299d67ed | 506 | while ((upaddr->upds & UPDS_DRY) == 0) { |
f88f8fdb BJ |
507 | if (++waitdry > 512) |
508 | break; | |
509 | upwaitdry++; | |
510 | } | |
299d67ed | 511 | if (upaddr->uper1&UPER1_WLE) { |
736772ef BJ |
512 | /* |
513 | * Give up on write locked devices | |
514 | * immediately. | |
515 | */ | |
f6d201ff | 516 | printf("up%d: write locked\n", dkunit(bp)); |
736772ef BJ |
517 | bp->b_flags |= B_ERROR; |
518 | } else if (++um->um_tab.b_errcnt > 27) { | |
519 | /* | |
520 | * After 28 retries (16 without offset, and | |
521 | * 12 with offset positioning) give up. | |
522 | */ | |
f6d201ff BJ |
523 | harderr(bp, "up"); |
524 | printf("cs2=%b er1=%b er2=%b\n", | |
c84ff1f9 BJ |
525 | upaddr->upcs2, UPCS2_BITS, |
526 | upaddr->uper1, UPER1_BITS, | |
527 | upaddr->uper2, UPER2_BITS); | |
736772ef BJ |
528 | bp->b_flags |= B_ERROR; |
529 | } else { | |
530 | /* | |
531 | * Retriable error. | |
532 | * If a soft ecc, correct it (continuing | |
533 | * by returning if necessary. | |
534 | * Otherwise fall through and retry the transfer | |
535 | */ | |
536 | um->um_tab.b_active = 0; /* force retry */ | |
299d67ed | 537 | if ((upaddr->uper1&(UPER1_DCK|UPER1_ECH))==UPER1_DCK) |
2601dfbd BJ |
538 | if (upecc(ui)) |
539 | return; | |
736772ef BJ |
540 | } |
541 | /* | |
542 | * Clear drive error and, every eight attempts, | |
543 | * (starting with the fourth) | |
544 | * recalibrate to clear the slate. | |
545 | */ | |
546 | upaddr->upcs1 = UP_TRE|UP_IE|UP_DCLR|UP_GO; | |
547 | needie = 0; | |
fc4d0a69 | 548 | if ((um->um_tab.b_errcnt&07) == 4 && um->um_tab.b_active == 0) { |
736772ef | 549 | upaddr->upcs1 = UP_RECAL|UP_IE|UP_GO; |
a6442a2f BJ |
550 | sc->sc_recal = 0; |
551 | goto nextrecal; | |
736772ef BJ |
552 | } |
553 | } | |
554 | /* | |
a6442a2f BJ |
555 | * Advance recalibration finite state machine |
556 | * if recalibrate in progress, through | |
557 | * RECAL | |
558 | * SEEK | |
559 | * OFFSET (optional) | |
560 | * RETRY | |
736772ef | 561 | */ |
a6442a2f BJ |
562 | switch (sc->sc_recal) { |
563 | ||
564 | case 1: | |
565 | upaddr->updc = bp->b_cylin; | |
566 | upaddr->upcs1 = UP_SEEK|UP_IE|UP_GO; | |
567 | goto nextrecal; | |
568 | case 2: | |
569 | if (um->um_tab.b_errcnt < 16 || (bp->b_flags&B_READ) == 0) | |
570 | goto donerecal; | |
299d67ed | 571 | upaddr->upof = up_offset[um->um_tab.b_errcnt & 017] | UPOF_FMT22; |
a6442a2f BJ |
572 | upaddr->upcs1 = UP_IE|UP_OFFSET|UP_GO; |
573 | goto nextrecal; | |
574 | nextrecal: | |
575 | sc->sc_recal++; | |
576 | um->um_tab.b_active = 1; | |
577 | return; | |
578 | donerecal: | |
579 | case 3: | |
736772ef | 580 | sc->sc_recal = 0; |
a6442a2f BJ |
581 | um->um_tab.b_active = 0; |
582 | break; | |
736772ef BJ |
583 | } |
584 | /* | |
585 | * If still ``active'', then don't need any more retries. | |
586 | */ | |
587 | if (um->um_tab.b_active) { | |
588 | /* | |
589 | * If we were offset positioning, | |
590 | * return to centerline. | |
591 | */ | |
592 | if (um->um_tab.b_errcnt >= 16) { | |
299d67ed | 593 | upaddr->upof = UPOF_FMT22; |
736772ef | 594 | upaddr->upcs1 = UP_RTC|UP_GO|UP_IE; |
299d67ed | 595 | while (upaddr->upds & UPDS_PIP) |
736772ef | 596 | DELAY(25); |
eb891eaa | 597 | needie = 0; |
008c0481 | 598 | } |
736772ef BJ |
599 | um->um_tab.b_active = 0; |
600 | um->um_tab.b_errcnt = 0; | |
601 | um->um_tab.b_actf = dp->b_forw; | |
602 | dp->b_active = 0; | |
603 | dp->b_errcnt = 0; | |
604 | dp->b_actf = bp->av_forw; | |
605 | bp->b_resid = (-upaddr->upwc * sizeof(short)); | |
606 | iodone(bp); | |
607 | /* | |
608 | * If this unit has more work to do, | |
609 | * then start it up right away. | |
610 | */ | |
611 | if (dp->b_actf) | |
612 | if (upustart(ui)) | |
eb891eaa | 613 | needie = 0; |
008c0481 | 614 | } |
736772ef | 615 | as &= ~(1<<ui->ui_slave); |
8c58f40c BJ |
616 | /* |
617 | * Release unibus resources and flush data paths. | |
618 | */ | |
619 | ubadone(um); | |
736772ef BJ |
620 | doattn: |
621 | /* | |
622 | * Process other units which need attention. | |
623 | * For each unit which needs attention, call | |
624 | * the unit start routine to place the slave | |
625 | * on the controller device queue. | |
626 | */ | |
a6442a2f BJ |
627 | while (unit = ffs(as)) { |
628 | unit--; /* was 1 origin */ | |
629 | as &= ~(1<<unit); | |
630 | upaddr->upas = 1<<unit; | |
631 | if (upustart(upip[sc21][unit])) | |
632 | needie = 0; | |
633 | } | |
736772ef BJ |
634 | /* |
635 | * If the controller is not transferring, but | |
636 | * there are devices ready to transfer, start | |
637 | * the controller. | |
638 | */ | |
3f3a34c3 BJ |
639 | if (um->um_tab.b_actf && um->um_tab.b_active == 0) |
640 | if (upstart(um)) | |
eb891eaa | 641 | needie = 0; |
2a3b9a7f | 642 | if (needie) |
2601dfbd | 643 | upaddr->upcs1 = UP_IE; |
008c0481 BJ |
644 | } |
645 | ||
646 | upread(dev) | |
0801d37f | 647 | dev_t dev; |
008c0481 | 648 | { |
0801d37f | 649 | register int unit = minor(dev) >> 3; |
7e00c42b | 650 | |
0801d37f BJ |
651 | if (unit >= NUP) |
652 | u.u_error = ENXIO; | |
653 | else | |
654 | physio(upstrategy, &rupbuf[unit], dev, B_READ, minphys); | |
008c0481 BJ |
655 | } |
656 | ||
657 | upwrite(dev) | |
0801d37f | 658 | dev_t dev; |
008c0481 | 659 | { |
0801d37f | 660 | register int unit = minor(dev) >> 3; |
7e00c42b | 661 | |
0801d37f BJ |
662 | if (unit >= NUP) |
663 | u.u_error = ENXIO; | |
664 | else | |
665 | physio(upstrategy, &rupbuf[unit], dev, B_WRITE, minphys); | |
008c0481 BJ |
666 | } |
667 | ||
7bc8d985 BJ |
668 | /* |
669 | * Correct an ECC error, and restart the i/o to complete | |
670 | * the transfer if necessary. This is quite complicated because | |
671 | * the transfer may be going to an odd memory address base and/or | |
672 | * across a page boundary. | |
673 | */ | |
3f3a34c3 | 674 | upecc(ui) |
89bd2f01 | 675 | register struct uba_device *ui; |
008c0481 | 676 | { |
2601dfbd | 677 | register struct updevice *up = (struct updevice *)ui->ui_addr; |
3f3a34c3 | 678 | register struct buf *bp = uputab[ui->ui_unit].b_actf; |
89bd2f01 | 679 | register struct uba_ctlr *um = ui->ui_mi; |
3f3a34c3 BJ |
680 | register struct upst *st; |
681 | struct uba_regs *ubp = ui->ui_hd->uh_uba; | |
7bc8d985 | 682 | register int i; |
008c0481 | 683 | caddr_t addr; |
7bc8d985 | 684 | int reg, bit, byte, npf, mask, o, cmd, ubaddr; |
008c0481 BJ |
685 | int bn, cn, tn, sn; |
686 | ||
008c0481 | 687 | /* |
7bc8d985 BJ |
688 | * Npf is the number of sectors transferred before the sector |
689 | * containing the ECC error, and reg is the UBA register | |
690 | * mapping (the first part of) the transfer. | |
691 | * O is offset within a memory page of the first byte transferred. | |
008c0481 | 692 | */ |
7bc8d985 | 693 | npf = btop((up->upwc * sizeof(short)) + bp->b_bcount) - 1; |
b7333467 | 694 | reg = btop(um->um_ubinfo&0x3ffff) + npf; |
008c0481 | 695 | o = (int)bp->b_un.b_addr & PGOFSET; |
89bd2f01 | 696 | printf("up%d%c: soft ecc sn%d\n", dkunit(bp), |
0c48c799 | 697 | 'a'+(minor(bp->b_dev)&07), bp->b_blkno + npf); |
008c0481 | 698 | mask = up->upec2; |
299d67ed | 699 | #ifdef UPECCDEBUG |
8c58f40c BJ |
700 | printf("npf %d reg %x o %d mask %o pos %d\n", npf, reg, o, mask, |
701 | up->upec1); | |
299d67ed | 702 | #endif |
7bc8d985 BJ |
703 | /* |
704 | * Flush the buffered data path, and compute the | |
705 | * byte and bit position of the error. The variable i | |
706 | * is the byte offset in the transfer, the variable byte | |
707 | * is the offset from a page boundary in main memory. | |
708 | */ | |
060afaf6 | 709 | ubapurge(um); |
7bc8d985 BJ |
710 | i = up->upec1 - 1; /* -1 makes 0 origin */ |
711 | bit = i&07; | |
712 | i = (i&~07)>>3; | |
008c0481 | 713 | byte = i + o; |
7bc8d985 BJ |
714 | /* |
715 | * Correct while possible bits remain of mask. Since mask | |
716 | * contains 11 bits, we continue while the bit offset is > -11. | |
717 | * Also watch out for end of this block and the end of the whole | |
718 | * transfer. | |
719 | */ | |
720 | while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) { | |
721 | addr = ptob(ubp->uba_map[reg+btop(byte)].pg_pfnum)+ | |
722 | (byte & PGOFSET); | |
299d67ed | 723 | #ifdef UPECCDEBUG |
8c58f40c BJ |
724 | printf("addr %x map reg %x\n", |
725 | addr, *(int *)(&ubp->uba_map[reg+btop(byte)])); | |
726 | printf("old: %x, ", getmemc(addr)); | |
299d67ed | 727 | #endif |
7bc8d985 | 728 | putmemc(addr, getmemc(addr)^(mask<<bit)); |
299d67ed | 729 | #ifdef UPECCDEBUG |
8c58f40c | 730 | printf("new: %x\n", getmemc(addr)); |
299d67ed | 731 | #endif |
7bc8d985 BJ |
732 | byte++; |
733 | i++; | |
734 | bit -= 8; | |
008c0481 | 735 | } |
3f3a34c3 | 736 | um->um_tab.b_active++; /* Either complete or continuing... */ |
008c0481 BJ |
737 | if (up->upwc == 0) |
738 | return (0); | |
7bc8d985 BJ |
739 | /* |
740 | * Have to continue the transfer... clear the drive, | |
741 | * and compute the position where the transfer is to continue. | |
742 | * We have completed npf+1 sectors of the transfer already; | |
743 | * restart at offset o of next sector (i.e. in UBA register reg+1). | |
744 | */ | |
2601dfbd BJ |
745 | #ifdef notdef |
746 | up->uper1 = 0; | |
747 | up->upcs1 |= UP_GO; | |
748 | #else | |
749 | up->upcs1 = UP_TRE|UP_IE|UP_DCLR|UP_GO; | |
008c0481 | 750 | bn = dkblock(bp); |
3f3a34c3 | 751 | st = &upst[ui->ui_type]; |
008c0481 | 752 | cn = bp->b_cylin; |
3f3a34c3 BJ |
753 | sn = bn%st->nspc + npf + 1; |
754 | tn = sn/st->nsect; | |
755 | sn %= st->nsect; | |
756 | cn += tn/st->ntrak; | |
757 | tn %= st->ntrak; | |
008c0481 | 758 | up->updc = cn; |
7bc8d985 BJ |
759 | up->upda = (tn << 8) | sn; |
760 | ubaddr = (int)ptob(reg+1) + o; | |
761 | up->upba = ubaddr; | |
762 | cmd = (ubaddr >> 8) & 0x300; | |
2601dfbd | 763 | cmd |= UP_IE|UP_GO|UP_RCOM; |
7bc8d985 | 764 | up->upcs1 = cmd; |
2601dfbd | 765 | #endif |
008c0481 BJ |
766 | return (1); |
767 | } | |
977c2848 BJ |
768 | |
769 | /* | |
770 | * Reset driver after UBA init. | |
771 | * Cancel software state of all pending transfers | |
772 | * and restart all units and the controller. | |
773 | */ | |
3f3a34c3 | 774 | upreset(uban) |
f6d201ff | 775 | int uban; |
977c2848 | 776 | { |
89bd2f01 BJ |
777 | register struct uba_ctlr *um; |
778 | register struct uba_device *ui; | |
3f3a34c3 BJ |
779 | register sc21, unit; |
780 | ||
a3cb8f60 | 781 | for (sc21 = 0; sc21 < NSC; sc21++) { |
7e00c42b BJ |
782 | if ((um = upminfo[sc21]) == 0 || um->um_ubanum != uban || |
783 | um->um_alive == 0) | |
3f3a34c3 | 784 | continue; |
f6d201ff | 785 | printf(" sc%d", sc21); |
3f3a34c3 BJ |
786 | um->um_tab.b_active = 0; |
787 | um->um_tab.b_actf = um->um_tab.b_actl = 0; | |
f6d201ff | 788 | up_softc[sc21].sc_recal = 0; |
b7333467 BJ |
789 | if (um->um_ubinfo) { |
790 | printf("<%d>", (um->um_ubinfo>>28)&0xf); | |
0801d37f | 791 | ubadone(um); |
3f3a34c3 | 792 | } |
299d67ed | 793 | ((struct updevice *)(um->um_addr))->upcs2 = UPCS2_CLR; |
3f3a34c3 BJ |
794 | for (unit = 0; unit < NUP; unit++) { |
795 | if ((ui = updinfo[unit]) == 0) | |
796 | continue; | |
f6d201ff | 797 | if (ui->ui_alive == 0 || ui->ui_mi != um) |
3f3a34c3 BJ |
798 | continue; |
799 | uputab[unit].b_active = 0; | |
800 | (void) upustart(ui); | |
801 | } | |
802 | (void) upstart(um); | |
977c2848 | 803 | } |
977c2848 | 804 | } |
6a81870e BJ |
805 | |
806 | /* | |
807 | * Wake up every second and if an interrupt is pending | |
808 | * but nothing has happened increment a counter. | |
f6d201ff | 809 | * If nothing happens for 20 seconds, reset the UNIBUS |
6a81870e BJ |
810 | * and begin anew. |
811 | */ | |
812 | upwatch() | |
813 | { | |
89bd2f01 | 814 | register struct uba_ctlr *um; |
3f3a34c3 | 815 | register sc21, unit; |
7e00c42b | 816 | register struct up_softc *sc; |
6a81870e | 817 | |
7780575a | 818 | timeout(upwatch, (caddr_t)0, hz); |
a3cb8f60 | 819 | for (sc21 = 0; sc21 < NSC; sc21++) { |
3f3a34c3 | 820 | um = upminfo[sc21]; |
7e00c42b BJ |
821 | if (um == 0 || um->um_alive == 0) |
822 | continue; | |
823 | sc = &up_softc[sc21]; | |
3f3a34c3 BJ |
824 | if (um->um_tab.b_active == 0) { |
825 | for (unit = 0; unit < NUP; unit++) | |
2601dfbd BJ |
826 | if (uputab[unit].b_active && |
827 | updinfo[unit]->ui_mi == um) | |
3f3a34c3 | 828 | goto active; |
7e00c42b | 829 | sc->sc_wticks = 0; |
3f3a34c3 BJ |
830 | continue; |
831 | } | |
f6d201ff | 832 | active: |
7e00c42b BJ |
833 | sc->sc_wticks++; |
834 | if (sc->sc_wticks >= 20) { | |
835 | sc->sc_wticks = 0; | |
f6d201ff | 836 | printf("sc%d: lost interrupt\n", sc21); |
a3cb8f60 | 837 | ubareset(um->um_ubanum); |
3f3a34c3 | 838 | } |
6a81870e BJ |
839 | } |
840 | } | |
0ff318b2 BJ |
841 | |
842 | #define DBSIZE 20 | |
843 | ||
844 | updump(dev) | |
845 | dev_t dev; | |
846 | { | |
2601dfbd | 847 | struct updevice *upaddr; |
0ff318b2 | 848 | char *start; |
a0eab615 | 849 | int num, blk, unit; |
0ff318b2 | 850 | struct size *sizes; |
3f3a34c3 | 851 | register struct uba_regs *uba; |
89bd2f01 | 852 | register struct uba_device *ui; |
0ff318b2 | 853 | register short *rp; |
3f3a34c3 | 854 | struct upst *st; |
0ff318b2 | 855 | |
0ff318b2 | 856 | unit = minor(dev) >> 3; |
0c48c799 BJ |
857 | if (unit >= NUP) |
858 | return (ENXIO); | |
7e00c42b | 859 | #define phys(cast, addr) ((cast)((int)addr & 0x7fffffff)) |
89bd2f01 | 860 | ui = phys(struct uba_device *, updinfo[unit]); |
0c48c799 BJ |
861 | if (ui->ui_alive == 0) |
862 | return (ENXIO); | |
3f3a34c3 | 863 | uba = phys(struct uba_hd *, ui->ui_hd)->uh_physuba; |
89bd2f01 | 864 | ubainit(uba); |
2601dfbd | 865 | upaddr = (struct updevice *)ui->ui_physaddr; |
89bd2f01 | 866 | DELAY(2000000); |
3f3a34c3 BJ |
867 | num = maxfree; |
868 | start = 0; | |
0ff318b2 | 869 | upaddr->upcs2 = unit; |
89bd2f01 BJ |
870 | DELAY(100); |
871 | if ((upaddr->upcs1&UP_DVA) == 0) | |
872 | return (EFAULT); | |
299d67ed | 873 | if ((upaddr->upds & UPDS_VV) == 0) { |
2601dfbd BJ |
874 | upaddr->upcs1 = UP_DCLR|UP_GO; |
875 | upaddr->upcs1 = UP_PRESET|UP_GO; | |
299d67ed | 876 | upaddr->upof = UPOF_FMT22; |
0ff318b2 | 877 | } |
299d67ed | 878 | if ((upaddr->upds & UPDS_DREADY) != UPDS_DREADY) |
0c48c799 | 879 | return (EFAULT); |
7e00c42b | 880 | st = &upst[ui->ui_type]; |
3f3a34c3 | 881 | sizes = phys(struct size *, st->sizes); |
0c48c799 BJ |
882 | if (dumplo < 0 || dumplo + num >= sizes[minor(dev)&07].nblocks) |
883 | return (EINVAL); | |
0ff318b2 BJ |
884 | while (num > 0) { |
885 | register struct pte *io; | |
886 | register int i; | |
887 | int cn, sn, tn; | |
888 | daddr_t bn; | |
889 | ||
890 | blk = num > DBSIZE ? DBSIZE : num; | |
3f3a34c3 | 891 | io = uba->uba_map; |
0ff318b2 | 892 | for (i = 0; i < blk; i++) |
89bd2f01 | 893 | *(int *)io++ = (btop(start)+i) | (1<<21) | UBAMR_MRV; |
0ff318b2 BJ |
894 | *(int *)io = 0; |
895 | bn = dumplo + btop(start); | |
71236e46 BJ |
896 | cn = bn/st->nspc + sizes[minor(dev)&07].cyloff; |
897 | sn = bn%st->nspc; | |
898 | tn = sn/st->nsect; | |
899 | sn = sn%st->nsect; | |
0ff318b2 BJ |
900 | upaddr->updc = cn; |
901 | rp = (short *) &upaddr->upda; | |
902 | *rp = (tn << 8) + sn; | |
903 | *--rp = 0; | |
904 | *--rp = -blk*NBPG / sizeof (short); | |
2601dfbd | 905 | *--rp = UP_GO|UP_WCOM; |
0ff318b2 BJ |
906 | do { |
907 | DELAY(25); | |
2601dfbd | 908 | } while ((upaddr->upcs1 & UP_RDY) == 0); |
299d67ed | 909 | if (upaddr->upds&UPDS_ERR) |
0c48c799 | 910 | return (EIO); |
0ff318b2 BJ |
911 | start += blk*NBPG; |
912 | num -= blk; | |
913 | } | |
0ff318b2 BJ |
914 | return (0); |
915 | } | |
63c35a63 | 916 | #endif |