Commit | Line | Data |
---|---|---|
cc7ff771 | 1 | /* up.c 4.44 82/03/29 */ |
008c0481 | 2 | |
66b4fb09 | 3 | #include "up.h" |
a3cb8f60 | 4 | #if NSC > 0 |
008c0481 | 5 | /* |
10fb932f | 6 | * UNIBUS disk driver with overlapped seeks and ECC recovery. |
0c48c799 BJ |
7 | * |
8 | * TODO: | |
0c48c799 | 9 | * Add bad sector forwarding code |
299d67ed | 10 | * Check that offset recovery code works |
008c0481 BJ |
11 | */ |
12 | ||
13 | #include "../h/param.h" | |
14 | #include "../h/systm.h" | |
3f3a34c3 BJ |
15 | #include "../h/cpu.h" |
16 | #include "../h/nexus.h" | |
41888f16 | 17 | #include "../h/dk.h" |
008c0481 BJ |
18 | #include "../h/buf.h" |
19 | #include "../h/conf.h" | |
20 | #include "../h/dir.h" | |
21 | #include "../h/user.h" | |
22 | #include "../h/map.h" | |
80e7c811 | 23 | #include "../h/pte.h" |
008c0481 | 24 | #include "../h/mtpr.h" |
008c0481 | 25 | #include "../h/vm.h" |
89bd2f01 BJ |
26 | #include "../h/ubavar.h" |
27 | #include "../h/ubareg.h" | |
0ff318b2 | 28 | #include "../h/cmap.h" |
008c0481 | 29 | |
0ff318b2 | 30 | #include "../h/upreg.h" |
008c0481 | 31 | |
3f3a34c3 BJ |
32 | struct up_softc { |
33 | int sc_softas; | |
71236e46 | 34 | int sc_ndrive; |
3f3a34c3 | 35 | int sc_wticks; |
736772ef | 36 | int sc_recal; |
a3cb8f60 | 37 | } up_softc[NSC]; |
008c0481 | 38 | |
3f3a34c3 | 39 | /* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */ |
008c0481 BJ |
40 | struct size |
41 | { | |
42 | daddr_t nblocks; | |
43 | int cyloff; | |
44 | } up_sizes[8] = { | |
45 | 15884, 0, /* A=cyl 0 thru 26 */ | |
46 | 33440, 27, /* B=cyl 27 thru 81 */ | |
d1778415 | 47 | 495520, 0, /* C=cyl 0 thru 814 */ |
008c0481 BJ |
48 | 15884, 562, /* D=cyl 562 thru 588 */ |
49 | 55936, 589, /* E=cyl 589 thru 680 */ | |
0d728200 BJ |
50 | #ifndef NOBADSECT |
51 | 81376, 681, /* F=cyl 681 thru 814 */ | |
52 | 153728, 562, /* G=cyl 562 thru 814 */ | |
53 | #else | |
54 | 81472, 681, | |
55 | 153824, 562, | |
56 | #endif | |
008c0481 | 57 | 291346, 82, /* H=cyl 82 thru 561 */ |
3f3a34c3 BJ |
58 | }, fj_sizes[8] = { |
59 | 15884, 0, /* A=cyl 0 thru 49 */ | |
60 | 33440, 50, /* B=cyl 50 thru 154 */ | |
61 | 263360, 0, /* C=cyl 0 thru 822 */ | |
62 | 0, 0, | |
63 | 0, 0, | |
64 | 0, 0, | |
65 | 0, 0, | |
0d728200 BJ |
66 | #ifndef NOBADSECT |
67 | 213664, 155, /* H=cyl 155 thru 822 */ | |
68 | #else | |
69 | 213760, 155, | |
70 | #endif | |
0cc9b5a9 BJ |
71 | }, am_sizes[8] = { |
72 | 15884, 0, /* A=cyl 0 thru 31 */ | |
73 | 33440, 32, /* B=cyl 32 thru 97 */ | |
74 | 524288, 0, /* C=cyl 0 thru 1023 */ | |
75 | 0, 0, | |
76 | 0, 0, | |
77 | 0, 0, | |
78 | 181760, 668, /* G=cyl 668 thru 1022 */ | |
79 | 291346, 98, /* H=cyl 98 thru 667 */ | |
008c0481 | 80 | }; |
3f3a34c3 | 81 | /* END OF STUFF WHICH SHOULD BE READ IN PER DISK */ |
008c0481 | 82 | |
cc7ff771 BJ |
83 | /* |
84 | * On a 780 upSDIST could be 2, but | |
85 | * in the interest of 750's... | |
86 | */ | |
87 | #define _upSDIST 3 /* 1.5 msec */ | |
3f3a34c3 BJ |
88 | #define _upRDIST 4 /* 2.0 msec */ |
89 | ||
90 | int upSDIST = _upSDIST; | |
91 | int upRDIST = _upRDIST; | |
92 | ||
71236e46 | 93 | int upprobe(), upslave(), upattach(), updgo(), upintr(); |
89bd2f01 BJ |
94 | struct uba_ctlr *upminfo[NSC]; |
95 | struct uba_device *updinfo[NUP]; | |
96 | struct uba_device *upip[NSC][4]; | |
d763a2b7 | 97 | |
71236e46 | 98 | u_short upstd[] = { 0776700, 0774400, 0776300, 0 }; |
0801d37f | 99 | struct uba_driver scdriver = |
71236e46 | 100 | { upprobe, upslave, upattach, updgo, upstd, "up", updinfo, "sc", upminfo }; |
3f3a34c3 BJ |
101 | struct buf uputab[NUP]; |
102 | ||
103 | struct upst { | |
104 | short nsect; | |
105 | short ntrak; | |
106 | short nspc; | |
107 | short ncyl; | |
108 | struct size *sizes; | |
109 | } upst[] = { | |
71236e46 BJ |
110 | 32, 19, 32*19, 823, up_sizes, /* 9300/cdc */ |
111 | /* 9300 actually has 815 cylinders... */ | |
3f3a34c3 | 112 | 32, 10, 32*10, 823, fj_sizes, /* fujitsu 160m */ |
cc7ff771 | 113 | 32, 16, 32*16, 1024, am_sizes, /* ampex capricorn */ |
3f3a34c3 | 114 | }; |
008c0481 | 115 | |
2601dfbd | 116 | u_char up_offset[16] = { |
299d67ed BJ |
117 | UPOF_P400, UPOF_M400, UPOF_P400, UPOF_M400, |
118 | UPOF_P800, UPOF_M800, UPOF_P800, UPOF_M800, | |
119 | UPOF_P1200, UPOF_M1200, UPOF_P1200, UPOF_M1200, | |
120 | 0, 0, 0, 0 | |
2601dfbd | 121 | }; |
008c0481 | 122 | |
0801d37f | 123 | struct buf rupbuf[NUP]; |
008c0481 | 124 | |
008c0481 BJ |
125 | #define b_cylin b_resid |
126 | ||
008c0481 BJ |
127 | #ifdef INTRLVE |
128 | daddr_t dkblock(); | |
129 | #endif | |
3f3a34c3 BJ |
130 | |
131 | int upwstart, upwatch(); /* Have started guardian */ | |
7e00c42b | 132 | int upseek; |
f88f8fdb | 133 | int upwaitdry; |
3f3a34c3 BJ |
134 | |
135 | /*ARGSUSED*/ | |
71236e46 | 136 | upprobe(reg) |
3f3a34c3 | 137 | caddr_t reg; |
008c0481 | 138 | { |
d763a2b7 BJ |
139 | register int br, cvec; |
140 | ||
71236e46 BJ |
141 | #ifdef lint |
142 | br = 0; cvec = br; br = cvec; | |
143 | #endif | |
2601dfbd | 144 | ((struct updevice *)reg)->upcs1 = UP_IE|UP_RDY; |
71236e46 | 145 | DELAY(10); |
2601dfbd | 146 | ((struct updevice *)reg)->upcs1 = 0; |
d763a2b7 | 147 | return (1); |
3f3a34c3 BJ |
148 | } |
149 | ||
71236e46 | 150 | upslave(ui, reg) |
89bd2f01 | 151 | struct uba_device *ui; |
3f3a34c3 BJ |
152 | caddr_t reg; |
153 | { | |
2601dfbd | 154 | register struct updevice *upaddr = (struct updevice *)reg; |
3f3a34c3 BJ |
155 | |
156 | upaddr->upcs1 = 0; /* conservative */ | |
71236e46 | 157 | upaddr->upcs2 = ui->ui_slave; |
299d67ed | 158 | if (upaddr->upcs2&UPCS2_NED) { |
2601dfbd | 159 | upaddr->upcs1 = UP_DCLR|UP_GO; |
3f3a34c3 BJ |
160 | return (0); |
161 | } | |
71236e46 BJ |
162 | return (1); |
163 | } | |
164 | ||
165 | upattach(ui) | |
89bd2f01 | 166 | register struct uba_device *ui; |
71236e46 | 167 | { |
2601dfbd | 168 | register struct updevice *upaddr; |
71236e46 | 169 | |
6a81870e | 170 | if (upwstart == 0) { |
7780575a | 171 | timeout(upwatch, (caddr_t)0, hz); |
6a81870e BJ |
172 | upwstart++; |
173 | } | |
b7333467 BJ |
174 | if (ui->ui_dk >= 0) |
175 | dk_mspw[ui->ui_dk] = .0000020345; | |
71236e46 BJ |
176 | upip[ui->ui_ctlr][ui->ui_slave] = ui; |
177 | up_softc[ui->ui_ctlr].sc_ndrive++; | |
2601dfbd BJ |
178 | upaddr = (struct updevice *)ui->ui_addr; |
179 | upaddr->upcs1 = 0; | |
180 | upaddr->upcs2 = ui->ui_slave; | |
26e15512 | 181 | upaddr->uphr = UPHR_MAXTRAK; |
c6a51a7b | 182 | if (upaddr->uphr == 9) |
26e15512 | 183 | ui->ui_type = 1; /* fujitsu hack */ |
0cc9b5a9 BJ |
184 | else if (upaddr->uphr == 15) |
185 | ui->ui_type = 2; /* ampex hack */ | |
26e15512 BJ |
186 | upaddr->upcs2 = UPCS2_CLR; |
187 | /* | |
188 | upaddr->uphr = UPHR_MAXCYL; | |
189 | printf("maxcyl %d\n", upaddr->uphr); | |
190 | upaddr->uphr = UPHR_MAXTRAK; | |
191 | printf("maxtrak %d\n", upaddr->uphr); | |
192 | upaddr->uphr = UPHR_MAXSECT; | |
193 | printf("maxsect %d\n", upaddr->uphr); | |
194 | */ | |
3f3a34c3 BJ |
195 | } |
196 | ||
3f3a34c3 BJ |
197 | upstrategy(bp) |
198 | register struct buf *bp; | |
199 | { | |
89bd2f01 | 200 | register struct uba_device *ui; |
3f3a34c3 BJ |
201 | register struct upst *st; |
202 | register int unit; | |
7e00c42b | 203 | register struct buf *dp; |
3f3a34c3 | 204 | int xunit = minor(bp->b_dev) & 07; |
7e00c42b | 205 | long bn, sz; |
3f3a34c3 | 206 | |
7e00c42b | 207 | sz = (bp->b_bcount+511) >> 9; |
008c0481 | 208 | unit = dkunit(bp); |
3f3a34c3 BJ |
209 | if (unit >= NUP) |
210 | goto bad; | |
211 | ui = updinfo[unit]; | |
212 | if (ui == 0 || ui->ui_alive == 0) | |
213 | goto bad; | |
214 | st = &upst[ui->ui_type]; | |
215 | if (bp->b_blkno < 0 || | |
216 | (bn = dkblock(bp))+sz > st->sizes[xunit].nblocks) | |
217 | goto bad; | |
218 | bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff; | |
0cc9b5a9 | 219 | (void) spl5(); |
7e00c42b BJ |
220 | dp = &uputab[ui->ui_unit]; |
221 | disksort(dp, bp); | |
222 | if (dp->b_active == 0) { | |
3f3a34c3 BJ |
223 | (void) upustart(ui); |
224 | bp = &ui->ui_mi->um_tab; | |
225 | if (bp->b_actf && bp->b_active == 0) | |
226 | (void) upstart(ui->ui_mi); | |
008c0481 | 227 | } |
0cc9b5a9 | 228 | (void) spl0(); |
3f3a34c3 BJ |
229 | return; |
230 | ||
231 | bad: | |
232 | bp->b_flags |= B_ERROR; | |
233 | iodone(bp); | |
234 | return; | |
008c0481 BJ |
235 | } |
236 | ||
736772ef BJ |
237 | /* |
238 | * Unit start routine. | |
239 | * Seek the drive to be where the data is | |
240 | * and then generate another interrupt | |
241 | * to actually start the transfer. | |
242 | * If there is only one drive on the controller, | |
243 | * or we are very close to the data, don't | |
244 | * bother with the search. If called after | |
245 | * searching once, don't bother to look where | |
246 | * we are, just queue for transfer (to avoid | |
247 | * positioning forever without transferrring.) | |
248 | */ | |
3f3a34c3 | 249 | upustart(ui) |
89bd2f01 | 250 | register struct uba_device *ui; |
008c0481 BJ |
251 | { |
252 | register struct buf *bp, *dp; | |
89bd2f01 | 253 | register struct uba_ctlr *um; |
2601dfbd | 254 | register struct updevice *upaddr; |
3f3a34c3 | 255 | register struct upst *st; |
008c0481 | 256 | daddr_t bn; |
736772ef | 257 | int sn, csn; |
71236e46 BJ |
258 | /* |
259 | * The SC21 cancels commands if you just say | |
2601dfbd | 260 | * cs1 = UP_IE |
71236e46 BJ |
261 | * so we are cautious about handling of cs1. |
262 | * Also don't bother to clear as bits other than in upintr(). | |
263 | */ | |
736772ef BJ |
264 | int didie = 0; |
265 | ||
266 | if (ui == 0) | |
267 | return (0); | |
89bd2f01 | 268 | um = ui->ui_mi; |
3f3a34c3 BJ |
269 | dk_busy &= ~(1<<ui->ui_dk); |
270 | dp = &uputab[ui->ui_unit]; | |
7bc8d985 | 271 | if ((bp = dp->b_actf) == NULL) |
eb891eaa | 272 | goto out; |
736772ef BJ |
273 | /* |
274 | * If the controller is active, just remember | |
275 | * that this device would like to be positioned... | |
276 | * if we tried to position now we would confuse the SC21. | |
277 | */ | |
3f3a34c3 | 278 | if (um->um_tab.b_active) { |
d763a2b7 | 279 | up_softc[um->um_ctlr].sc_softas |= 1<<ui->ui_slave; |
2a3b9a7f BJ |
280 | return (0); |
281 | } | |
736772ef BJ |
282 | /* |
283 | * If we have already positioned this drive, | |
284 | * then just put it on the ready queue. | |
285 | */ | |
a3f430e0 BJ |
286 | if (dp->b_active) |
287 | goto done; | |
288 | dp->b_active = 1; | |
2601dfbd | 289 | upaddr = (struct updevice *)um->um_addr; |
3f3a34c3 | 290 | upaddr->upcs2 = ui->ui_slave; |
736772ef BJ |
291 | /* |
292 | * If drive has just come up, | |
293 | * setup the pack. | |
294 | */ | |
299d67ed | 295 | if ((upaddr->upds & UPDS_VV) == 0) { |
71236e46 | 296 | /* SHOULD WARN SYSTEM THAT THIS HAPPENED */ |
2601dfbd BJ |
297 | upaddr->upcs1 = UP_IE|UP_DCLR|UP_GO; |
298 | upaddr->upcs1 = UP_IE|UP_PRESET|UP_GO; | |
299d67ed | 299 | upaddr->upof = UPOF_FMT22; |
eb891eaa | 300 | didie = 1; |
008c0481 | 301 | } |
736772ef BJ |
302 | /* |
303 | * If drive is offline, forget about positioning. | |
304 | */ | |
299d67ed | 305 | if ((upaddr->upds & (UPDS_DPR|UPDS_MOL)) != (UPDS_DPR|UPDS_MOL)) |
2a3b9a7f | 306 | goto done; |
736772ef BJ |
307 | /* |
308 | * If there is only one drive, | |
309 | * dont bother searching. | |
310 | */ | |
71236e46 BJ |
311 | if (up_softc[um->um_ctlr].sc_ndrive == 1) |
312 | goto done; | |
736772ef BJ |
313 | /* |
314 | * Figure out where this transfer is going to | |
315 | * and see if we are close enough to justify not searching. | |
316 | */ | |
3f3a34c3 | 317 | st = &upst[ui->ui_type]; |
008c0481 | 318 | bn = dkblock(bp); |
3f3a34c3 BJ |
319 | sn = bn%st->nspc; |
320 | sn = (sn + st->nsect - upSDIST) % st->nsect; | |
736772ef | 321 | if (bp->b_cylin - upaddr->updc) |
7bc8d985 | 322 | goto search; /* Not on-cylinder */ |
2a3b9a7f BJ |
323 | else if (upseek) |
324 | goto done; /* Ok just to be on-cylinder */ | |
008c0481 | 325 | csn = (upaddr->upla>>6) - sn - 1; |
7bc8d985 | 326 | if (csn < 0) |
3f3a34c3 BJ |
327 | csn += st->nsect; |
328 | if (csn > st->nsect - upRDIST) | |
008c0481 | 329 | goto done; |
008c0481 | 330 | search: |
736772ef BJ |
331 | upaddr->updc = bp->b_cylin; |
332 | /* | |
333 | * Not on cylinder at correct position, | |
334 | * seek/search. | |
335 | */ | |
2a3b9a7f | 336 | if (upseek) |
2601dfbd | 337 | upaddr->upcs1 = UP_IE|UP_SEEK|UP_GO; |
7e00c42b | 338 | else { |
2a3b9a7f | 339 | upaddr->upda = sn; |
2601dfbd | 340 | upaddr->upcs1 = UP_IE|UP_SEARCH|UP_GO; |
2a3b9a7f | 341 | } |
eb891eaa | 342 | didie = 1; |
736772ef BJ |
343 | /* |
344 | * Mark unit busy for iostat. | |
345 | */ | |
3f3a34c3 BJ |
346 | if (ui->ui_dk >= 0) { |
347 | dk_busy |= 1<<ui->ui_dk; | |
348 | dk_seek[ui->ui_dk]++; | |
008c0481 | 349 | } |
eb891eaa | 350 | goto out; |
008c0481 | 351 | done: |
736772ef BJ |
352 | /* |
353 | * Device is ready to go. | |
354 | * Put it on the ready queue for the controller | |
355 | * (unless its already there.) | |
356 | */ | |
2601dfbd BJ |
357 | if (dp->b_active != 2) { |
358 | dp->b_forw = NULL; | |
359 | if (um->um_tab.b_actf == NULL) | |
360 | um->um_tab.b_actf = dp; | |
361 | else | |
362 | um->um_tab.b_actl->b_forw = dp; | |
363 | um->um_tab.b_actl = dp; | |
364 | dp->b_active = 2; | |
365 | } | |
eb891eaa BJ |
366 | out: |
367 | return (didie); | |
008c0481 BJ |
368 | } |
369 | ||
736772ef BJ |
370 | /* |
371 | * Start up a transfer on a drive. | |
372 | */ | |
3f3a34c3 | 373 | upstart(um) |
89bd2f01 | 374 | register struct uba_ctlr *um; |
008c0481 BJ |
375 | { |
376 | register struct buf *bp, *dp; | |
89bd2f01 | 377 | register struct uba_device *ui; |
2601dfbd | 378 | register struct updevice *upaddr; |
7e00c42b | 379 | struct upst *st; |
008c0481 | 380 | daddr_t bn; |
f88f8fdb | 381 | int dn, sn, tn, cmd, waitdry; |
008c0481 | 382 | |
008c0481 | 383 | loop: |
736772ef BJ |
384 | /* |
385 | * Pull a request off the controller queue | |
386 | */ | |
3f3a34c3 | 387 | if ((dp = um->um_tab.b_actf) == NULL) |
eb891eaa | 388 | return (0); |
008c0481 | 389 | if ((bp = dp->b_actf) == NULL) { |
3f3a34c3 | 390 | um->um_tab.b_actf = dp->b_forw; |
008c0481 BJ |
391 | goto loop; |
392 | } | |
736772ef BJ |
393 | /* |
394 | * Mark controller busy, and | |
395 | * determine destination of this request. | |
396 | */ | |
3f3a34c3 BJ |
397 | um->um_tab.b_active++; |
398 | ui = updinfo[dkunit(bp)]; | |
008c0481 | 399 | bn = dkblock(bp); |
3f3a34c3 BJ |
400 | dn = ui->ui_slave; |
401 | st = &upst[ui->ui_type]; | |
402 | sn = bn%st->nspc; | |
403 | tn = sn/st->nsect; | |
404 | sn %= st->nsect; | |
2601dfbd | 405 | upaddr = (struct updevice *)ui->ui_addr; |
736772ef BJ |
406 | /* |
407 | * Select drive if not selected already. | |
408 | */ | |
409 | if ((upaddr->upcs2&07) != dn) | |
410 | upaddr->upcs2 = dn; | |
411 | /* | |
412 | * Check that it is ready and online | |
413 | */ | |
f88f8fdb | 414 | waitdry = 0; |
299d67ed | 415 | while ((upaddr->upds&UPDS_DRY) == 0) { |
f88f8fdb BJ |
416 | if (++waitdry > 512) |
417 | break; | |
418 | upwaitdry++; | |
419 | } | |
299d67ed | 420 | if ((upaddr->upds & UPDS_DREADY) != UPDS_DREADY) { |
f6d201ff | 421 | printf("up%d: not ready", dkunit(bp)); |
299d67ed | 422 | if ((upaddr->upds & UPDS_DREADY) != UPDS_DREADY) { |
71236e46 | 423 | printf("\n"); |
3f3a34c3 BJ |
424 | um->um_tab.b_active = 0; |
425 | um->um_tab.b_errcnt = 0; | |
88253fd2 BJ |
426 | dp->b_actf = bp->av_forw; |
427 | dp->b_active = 0; | |
428 | bp->b_flags |= B_ERROR; | |
429 | iodone(bp); | |
88253fd2 BJ |
430 | goto loop; |
431 | } | |
736772ef BJ |
432 | /* |
433 | * Oh, well, sometimes this | |
434 | * happens, for reasons unknown. | |
435 | */ | |
2601dfbd | 436 | printf(" (flakey)\n"); |
008c0481 | 437 | } |
736772ef BJ |
438 | /* |
439 | * Setup for the transfer, and get in the | |
440 | * UNIBUS adaptor queue. | |
441 | */ | |
5aa9d5ea | 442 | upaddr->updc = bp->b_cylin; |
008c0481 | 443 | upaddr->upda = (tn << 8) + sn; |
008c0481 BJ |
444 | upaddr->upwc = -bp->b_bcount / sizeof (short); |
445 | if (bp->b_flags & B_READ) | |
2601dfbd | 446 | cmd = UP_IE|UP_RCOM|UP_GO; |
008c0481 | 447 | else |
2601dfbd | 448 | cmd = UP_IE|UP_WCOM|UP_GO; |
b7333467 | 449 | um->um_cmd = cmd; |
a0eab615 | 450 | (void) ubago(ui); |
eb891eaa | 451 | return (1); |
008c0481 BJ |
452 | } |
453 | ||
736772ef BJ |
454 | /* |
455 | * Now all ready to go, stuff the registers. | |
456 | */ | |
b7333467 | 457 | updgo(um) |
89bd2f01 | 458 | struct uba_ctlr *um; |
3f3a34c3 | 459 | { |
2601dfbd | 460 | register struct updevice *upaddr = (struct updevice *)um->um_addr; |
7e00c42b | 461 | |
cc7ff771 | 462 | um->um_tab.b_active++; /* should now be 2 */ |
b7333467 BJ |
463 | upaddr->upba = um->um_ubinfo; |
464 | upaddr->upcs1 = um->um_cmd|((um->um_ubinfo>>8)&0x300); | |
3f3a34c3 BJ |
465 | } |
466 | ||
736772ef BJ |
467 | /* |
468 | * Handle a disk interrupt. | |
469 | */ | |
443c8066 | 470 | upintr(sc21) |
3f3a34c3 | 471 | register sc21; |
008c0481 BJ |
472 | { |
473 | register struct buf *bp, *dp; | |
89bd2f01 BJ |
474 | register struct uba_ctlr *um = upminfo[sc21]; |
475 | register struct uba_device *ui; | |
2601dfbd | 476 | register struct updevice *upaddr = (struct updevice *)um->um_addr; |
008c0481 | 477 | register unit; |
7e00c42b | 478 | struct up_softc *sc = &up_softc[um->um_ctlr]; |
71236e46 | 479 | int as = (upaddr->upas & 0377) | sc->sc_softas; |
f88f8fdb | 480 | int needie = 1, waitdry; |
008c0481 | 481 | |
7e00c42b | 482 | sc->sc_wticks = 0; |
71236e46 | 483 | sc->sc_softas = 0; |
736772ef BJ |
484 | /* |
485 | * If controller wasn't transferring, then this is an | |
486 | * interrupt for attention status on seeking drives. | |
487 | * Just service them. | |
488 | */ | |
cc7ff771 | 489 | if (um->um_tab.b_active != 2 && !sc->sc_recal) { |
736772ef BJ |
490 | if (upaddr->upcs1 & UP_TRE) |
491 | upaddr->upcs1 = UP_TRE; | |
492 | goto doattn; | |
493 | } | |
736772ef BJ |
494 | /* |
495 | * Get device and block structures, and a pointer | |
89bd2f01 | 496 | * to the uba_device for the drive. Select the drive. |
736772ef BJ |
497 | */ |
498 | dp = um->um_tab.b_actf; | |
499 | bp = dp->b_actf; | |
500 | ui = updinfo[dkunit(bp)]; | |
501 | dk_busy &= ~(1 << ui->ui_dk); | |
502 | if ((upaddr->upcs2&07) != ui->ui_slave) | |
3f3a34c3 | 503 | upaddr->upcs2 = ui->ui_slave; |
736772ef BJ |
504 | /* |
505 | * Check for and process errors on | |
506 | * either the drive or the controller. | |
507 | */ | |
299d67ed | 508 | if ((upaddr->upds&UPDS_ERR) || (upaddr->upcs1&UP_TRE)) { |
f88f8fdb | 509 | waitdry = 0; |
299d67ed | 510 | while ((upaddr->upds & UPDS_DRY) == 0) { |
f88f8fdb BJ |
511 | if (++waitdry > 512) |
512 | break; | |
513 | upwaitdry++; | |
514 | } | |
299d67ed | 515 | if (upaddr->uper1&UPER1_WLE) { |
736772ef BJ |
516 | /* |
517 | * Give up on write locked devices | |
518 | * immediately. | |
519 | */ | |
f6d201ff | 520 | printf("up%d: write locked\n", dkunit(bp)); |
736772ef BJ |
521 | bp->b_flags |= B_ERROR; |
522 | } else if (++um->um_tab.b_errcnt > 27) { | |
523 | /* | |
524 | * After 28 retries (16 without offset, and | |
525 | * 12 with offset positioning) give up. | |
526 | */ | |
f6d201ff BJ |
527 | harderr(bp, "up"); |
528 | printf("cs2=%b er1=%b er2=%b\n", | |
c84ff1f9 BJ |
529 | upaddr->upcs2, UPCS2_BITS, |
530 | upaddr->uper1, UPER1_BITS, | |
531 | upaddr->uper2, UPER2_BITS); | |
736772ef BJ |
532 | bp->b_flags |= B_ERROR; |
533 | } else { | |
534 | /* | |
535 | * Retriable error. | |
536 | * If a soft ecc, correct it (continuing | |
537 | * by returning if necessary. | |
538 | * Otherwise fall through and retry the transfer | |
539 | */ | |
540 | um->um_tab.b_active = 0; /* force retry */ | |
299d67ed | 541 | if ((upaddr->uper1&(UPER1_DCK|UPER1_ECH))==UPER1_DCK) |
2601dfbd BJ |
542 | if (upecc(ui)) |
543 | return; | |
736772ef BJ |
544 | } |
545 | /* | |
546 | * Clear drive error and, every eight attempts, | |
547 | * (starting with the fourth) | |
548 | * recalibrate to clear the slate. | |
549 | */ | |
550 | upaddr->upcs1 = UP_TRE|UP_IE|UP_DCLR|UP_GO; | |
551 | needie = 0; | |
fc4d0a69 | 552 | if ((um->um_tab.b_errcnt&07) == 4 && um->um_tab.b_active == 0) { |
736772ef | 553 | upaddr->upcs1 = UP_RECAL|UP_IE|UP_GO; |
a6442a2f BJ |
554 | sc->sc_recal = 0; |
555 | goto nextrecal; | |
736772ef BJ |
556 | } |
557 | } | |
558 | /* | |
a6442a2f BJ |
559 | * Advance recalibration finite state machine |
560 | * if recalibrate in progress, through | |
561 | * RECAL | |
562 | * SEEK | |
563 | * OFFSET (optional) | |
564 | * RETRY | |
736772ef | 565 | */ |
a6442a2f BJ |
566 | switch (sc->sc_recal) { |
567 | ||
568 | case 1: | |
569 | upaddr->updc = bp->b_cylin; | |
570 | upaddr->upcs1 = UP_SEEK|UP_IE|UP_GO; | |
571 | goto nextrecal; | |
572 | case 2: | |
573 | if (um->um_tab.b_errcnt < 16 || (bp->b_flags&B_READ) == 0) | |
574 | goto donerecal; | |
299d67ed | 575 | upaddr->upof = up_offset[um->um_tab.b_errcnt & 017] | UPOF_FMT22; |
a6442a2f BJ |
576 | upaddr->upcs1 = UP_IE|UP_OFFSET|UP_GO; |
577 | goto nextrecal; | |
578 | nextrecal: | |
579 | sc->sc_recal++; | |
580 | um->um_tab.b_active = 1; | |
581 | return; | |
582 | donerecal: | |
583 | case 3: | |
736772ef | 584 | sc->sc_recal = 0; |
a6442a2f BJ |
585 | um->um_tab.b_active = 0; |
586 | break; | |
736772ef BJ |
587 | } |
588 | /* | |
589 | * If still ``active'', then don't need any more retries. | |
590 | */ | |
591 | if (um->um_tab.b_active) { | |
592 | /* | |
593 | * If we were offset positioning, | |
594 | * return to centerline. | |
595 | */ | |
596 | if (um->um_tab.b_errcnt >= 16) { | |
299d67ed | 597 | upaddr->upof = UPOF_FMT22; |
736772ef | 598 | upaddr->upcs1 = UP_RTC|UP_GO|UP_IE; |
299d67ed | 599 | while (upaddr->upds & UPDS_PIP) |
736772ef | 600 | DELAY(25); |
eb891eaa | 601 | needie = 0; |
008c0481 | 602 | } |
736772ef BJ |
603 | um->um_tab.b_active = 0; |
604 | um->um_tab.b_errcnt = 0; | |
605 | um->um_tab.b_actf = dp->b_forw; | |
606 | dp->b_active = 0; | |
607 | dp->b_errcnt = 0; | |
608 | dp->b_actf = bp->av_forw; | |
609 | bp->b_resid = (-upaddr->upwc * sizeof(short)); | |
610 | iodone(bp); | |
611 | /* | |
612 | * If this unit has more work to do, | |
613 | * then start it up right away. | |
614 | */ | |
615 | if (dp->b_actf) | |
616 | if (upustart(ui)) | |
eb891eaa | 617 | needie = 0; |
008c0481 | 618 | } |
736772ef | 619 | as &= ~(1<<ui->ui_slave); |
8c58f40c BJ |
620 | /* |
621 | * Release unibus resources and flush data paths. | |
622 | */ | |
623 | ubadone(um); | |
736772ef BJ |
624 | doattn: |
625 | /* | |
626 | * Process other units which need attention. | |
627 | * For each unit which needs attention, call | |
628 | * the unit start routine to place the slave | |
629 | * on the controller device queue. | |
630 | */ | |
a6442a2f BJ |
631 | while (unit = ffs(as)) { |
632 | unit--; /* was 1 origin */ | |
633 | as &= ~(1<<unit); | |
634 | upaddr->upas = 1<<unit; | |
635 | if (upustart(upip[sc21][unit])) | |
636 | needie = 0; | |
637 | } | |
736772ef BJ |
638 | /* |
639 | * If the controller is not transferring, but | |
640 | * there are devices ready to transfer, start | |
641 | * the controller. | |
642 | */ | |
3f3a34c3 BJ |
643 | if (um->um_tab.b_actf && um->um_tab.b_active == 0) |
644 | if (upstart(um)) | |
eb891eaa | 645 | needie = 0; |
2a3b9a7f | 646 | if (needie) |
2601dfbd | 647 | upaddr->upcs1 = UP_IE; |
008c0481 BJ |
648 | } |
649 | ||
650 | upread(dev) | |
0801d37f | 651 | dev_t dev; |
008c0481 | 652 | { |
0801d37f | 653 | register int unit = minor(dev) >> 3; |
7e00c42b | 654 | |
0801d37f BJ |
655 | if (unit >= NUP) |
656 | u.u_error = ENXIO; | |
657 | else | |
658 | physio(upstrategy, &rupbuf[unit], dev, B_READ, minphys); | |
008c0481 BJ |
659 | } |
660 | ||
661 | upwrite(dev) | |
0801d37f | 662 | dev_t dev; |
008c0481 | 663 | { |
0801d37f | 664 | register int unit = minor(dev) >> 3; |
7e00c42b | 665 | |
0801d37f BJ |
666 | if (unit >= NUP) |
667 | u.u_error = ENXIO; | |
668 | else | |
669 | physio(upstrategy, &rupbuf[unit], dev, B_WRITE, minphys); | |
008c0481 BJ |
670 | } |
671 | ||
7bc8d985 BJ |
672 | /* |
673 | * Correct an ECC error, and restart the i/o to complete | |
674 | * the transfer if necessary. This is quite complicated because | |
675 | * the transfer may be going to an odd memory address base and/or | |
676 | * across a page boundary. | |
677 | */ | |
3f3a34c3 | 678 | upecc(ui) |
89bd2f01 | 679 | register struct uba_device *ui; |
008c0481 | 680 | { |
2601dfbd | 681 | register struct updevice *up = (struct updevice *)ui->ui_addr; |
3f3a34c3 | 682 | register struct buf *bp = uputab[ui->ui_unit].b_actf; |
89bd2f01 | 683 | register struct uba_ctlr *um = ui->ui_mi; |
3f3a34c3 BJ |
684 | register struct upst *st; |
685 | struct uba_regs *ubp = ui->ui_hd->uh_uba; | |
7bc8d985 | 686 | register int i; |
008c0481 | 687 | caddr_t addr; |
7bc8d985 | 688 | int reg, bit, byte, npf, mask, o, cmd, ubaddr; |
008c0481 BJ |
689 | int bn, cn, tn, sn; |
690 | ||
008c0481 | 691 | /* |
7bc8d985 BJ |
692 | * Npf is the number of sectors transferred before the sector |
693 | * containing the ECC error, and reg is the UBA register | |
694 | * mapping (the first part of) the transfer. | |
695 | * O is offset within a memory page of the first byte transferred. | |
008c0481 | 696 | */ |
7bc8d985 | 697 | npf = btop((up->upwc * sizeof(short)) + bp->b_bcount) - 1; |
b7333467 | 698 | reg = btop(um->um_ubinfo&0x3ffff) + npf; |
008c0481 | 699 | o = (int)bp->b_un.b_addr & PGOFSET; |
89bd2f01 | 700 | printf("up%d%c: soft ecc sn%d\n", dkunit(bp), |
0c48c799 | 701 | 'a'+(minor(bp->b_dev)&07), bp->b_blkno + npf); |
008c0481 | 702 | mask = up->upec2; |
299d67ed | 703 | #ifdef UPECCDEBUG |
8c58f40c BJ |
704 | printf("npf %d reg %x o %d mask %o pos %d\n", npf, reg, o, mask, |
705 | up->upec1); | |
299d67ed | 706 | #endif |
7bc8d985 BJ |
707 | /* |
708 | * Flush the buffered data path, and compute the | |
709 | * byte and bit position of the error. The variable i | |
710 | * is the byte offset in the transfer, the variable byte | |
711 | * is the offset from a page boundary in main memory. | |
712 | */ | |
060afaf6 | 713 | ubapurge(um); |
7bc8d985 BJ |
714 | i = up->upec1 - 1; /* -1 makes 0 origin */ |
715 | bit = i&07; | |
716 | i = (i&~07)>>3; | |
008c0481 | 717 | byte = i + o; |
7bc8d985 BJ |
718 | /* |
719 | * Correct while possible bits remain of mask. Since mask | |
720 | * contains 11 bits, we continue while the bit offset is > -11. | |
721 | * Also watch out for end of this block and the end of the whole | |
722 | * transfer. | |
723 | */ | |
724 | while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) { | |
725 | addr = ptob(ubp->uba_map[reg+btop(byte)].pg_pfnum)+ | |
726 | (byte & PGOFSET); | |
299d67ed | 727 | #ifdef UPECCDEBUG |
8c58f40c BJ |
728 | printf("addr %x map reg %x\n", |
729 | addr, *(int *)(&ubp->uba_map[reg+btop(byte)])); | |
730 | printf("old: %x, ", getmemc(addr)); | |
299d67ed | 731 | #endif |
7bc8d985 | 732 | putmemc(addr, getmemc(addr)^(mask<<bit)); |
299d67ed | 733 | #ifdef UPECCDEBUG |
8c58f40c | 734 | printf("new: %x\n", getmemc(addr)); |
299d67ed | 735 | #endif |
7bc8d985 BJ |
736 | byte++; |
737 | i++; | |
738 | bit -= 8; | |
008c0481 | 739 | } |
cc7ff771 | 740 | um->um_tab.b_active = 2; /* Either complete or continuing... */ |
008c0481 BJ |
741 | if (up->upwc == 0) |
742 | return (0); | |
7bc8d985 BJ |
743 | /* |
744 | * Have to continue the transfer... clear the drive, | |
745 | * and compute the position where the transfer is to continue. | |
746 | * We have completed npf+1 sectors of the transfer already; | |
747 | * restart at offset o of next sector (i.e. in UBA register reg+1). | |
748 | */ | |
2601dfbd BJ |
749 | #ifdef notdef |
750 | up->uper1 = 0; | |
751 | up->upcs1 |= UP_GO; | |
752 | #else | |
753 | up->upcs1 = UP_TRE|UP_IE|UP_DCLR|UP_GO; | |
008c0481 | 754 | bn = dkblock(bp); |
3f3a34c3 | 755 | st = &upst[ui->ui_type]; |
008c0481 | 756 | cn = bp->b_cylin; |
3f3a34c3 BJ |
757 | sn = bn%st->nspc + npf + 1; |
758 | tn = sn/st->nsect; | |
759 | sn %= st->nsect; | |
760 | cn += tn/st->ntrak; | |
761 | tn %= st->ntrak; | |
008c0481 | 762 | up->updc = cn; |
7bc8d985 BJ |
763 | up->upda = (tn << 8) | sn; |
764 | ubaddr = (int)ptob(reg+1) + o; | |
765 | up->upba = ubaddr; | |
766 | cmd = (ubaddr >> 8) & 0x300; | |
2601dfbd | 767 | cmd |= UP_IE|UP_GO|UP_RCOM; |
7bc8d985 | 768 | up->upcs1 = cmd; |
2601dfbd | 769 | #endif |
008c0481 BJ |
770 | return (1); |
771 | } | |
977c2848 BJ |
772 | |
773 | /* | |
774 | * Reset driver after UBA init. | |
775 | * Cancel software state of all pending transfers | |
776 | * and restart all units and the controller. | |
777 | */ | |
3f3a34c3 | 778 | upreset(uban) |
f6d201ff | 779 | int uban; |
977c2848 | 780 | { |
89bd2f01 BJ |
781 | register struct uba_ctlr *um; |
782 | register struct uba_device *ui; | |
3f3a34c3 BJ |
783 | register sc21, unit; |
784 | ||
a3cb8f60 | 785 | for (sc21 = 0; sc21 < NSC; sc21++) { |
7e00c42b BJ |
786 | if ((um = upminfo[sc21]) == 0 || um->um_ubanum != uban || |
787 | um->um_alive == 0) | |
3f3a34c3 | 788 | continue; |
f6d201ff | 789 | printf(" sc%d", sc21); |
3f3a34c3 BJ |
790 | um->um_tab.b_active = 0; |
791 | um->um_tab.b_actf = um->um_tab.b_actl = 0; | |
f6d201ff | 792 | up_softc[sc21].sc_recal = 0; |
cc7ff771 | 793 | up_softc[sc21].sc_wticks = 0; |
b7333467 BJ |
794 | if (um->um_ubinfo) { |
795 | printf("<%d>", (um->um_ubinfo>>28)&0xf); | |
0801d37f | 796 | ubadone(um); |
3f3a34c3 | 797 | } |
299d67ed | 798 | ((struct updevice *)(um->um_addr))->upcs2 = UPCS2_CLR; |
3f3a34c3 BJ |
799 | for (unit = 0; unit < NUP; unit++) { |
800 | if ((ui = updinfo[unit]) == 0) | |
801 | continue; | |
f6d201ff | 802 | if (ui->ui_alive == 0 || ui->ui_mi != um) |
3f3a34c3 BJ |
803 | continue; |
804 | uputab[unit].b_active = 0; | |
805 | (void) upustart(ui); | |
806 | } | |
807 | (void) upstart(um); | |
977c2848 | 808 | } |
977c2848 | 809 | } |
6a81870e BJ |
810 | |
811 | /* | |
812 | * Wake up every second and if an interrupt is pending | |
813 | * but nothing has happened increment a counter. | |
f6d201ff | 814 | * If nothing happens for 20 seconds, reset the UNIBUS |
6a81870e BJ |
815 | * and begin anew. |
816 | */ | |
817 | upwatch() | |
818 | { | |
89bd2f01 | 819 | register struct uba_ctlr *um; |
3f3a34c3 | 820 | register sc21, unit; |
7e00c42b | 821 | register struct up_softc *sc; |
6a81870e | 822 | |
7780575a | 823 | timeout(upwatch, (caddr_t)0, hz); |
a3cb8f60 | 824 | for (sc21 = 0; sc21 < NSC; sc21++) { |
3f3a34c3 | 825 | um = upminfo[sc21]; |
7e00c42b BJ |
826 | if (um == 0 || um->um_alive == 0) |
827 | continue; | |
828 | sc = &up_softc[sc21]; | |
3f3a34c3 BJ |
829 | if (um->um_tab.b_active == 0) { |
830 | for (unit = 0; unit < NUP; unit++) | |
2601dfbd BJ |
831 | if (uputab[unit].b_active && |
832 | updinfo[unit]->ui_mi == um) | |
3f3a34c3 | 833 | goto active; |
7e00c42b | 834 | sc->sc_wticks = 0; |
3f3a34c3 BJ |
835 | continue; |
836 | } | |
f6d201ff | 837 | active: |
7e00c42b BJ |
838 | sc->sc_wticks++; |
839 | if (sc->sc_wticks >= 20) { | |
840 | sc->sc_wticks = 0; | |
f6d201ff | 841 | printf("sc%d: lost interrupt\n", sc21); |
a3cb8f60 | 842 | ubareset(um->um_ubanum); |
3f3a34c3 | 843 | } |
6a81870e BJ |
844 | } |
845 | } | |
0ff318b2 BJ |
846 | |
847 | #define DBSIZE 20 | |
848 | ||
849 | updump(dev) | |
850 | dev_t dev; | |
851 | { | |
2601dfbd | 852 | struct updevice *upaddr; |
0ff318b2 | 853 | char *start; |
a0eab615 | 854 | int num, blk, unit; |
0ff318b2 | 855 | struct size *sizes; |
3f3a34c3 | 856 | register struct uba_regs *uba; |
89bd2f01 | 857 | register struct uba_device *ui; |
0ff318b2 | 858 | register short *rp; |
3f3a34c3 | 859 | struct upst *st; |
0ff318b2 | 860 | |
0ff318b2 | 861 | unit = minor(dev) >> 3; |
0c48c799 BJ |
862 | if (unit >= NUP) |
863 | return (ENXIO); | |
7e00c42b | 864 | #define phys(cast, addr) ((cast)((int)addr & 0x7fffffff)) |
89bd2f01 | 865 | ui = phys(struct uba_device *, updinfo[unit]); |
0c48c799 BJ |
866 | if (ui->ui_alive == 0) |
867 | return (ENXIO); | |
3f3a34c3 | 868 | uba = phys(struct uba_hd *, ui->ui_hd)->uh_physuba; |
89bd2f01 | 869 | ubainit(uba); |
2601dfbd | 870 | upaddr = (struct updevice *)ui->ui_physaddr; |
89bd2f01 | 871 | DELAY(2000000); |
3f3a34c3 BJ |
872 | num = maxfree; |
873 | start = 0; | |
0ff318b2 | 874 | upaddr->upcs2 = unit; |
89bd2f01 BJ |
875 | DELAY(100); |
876 | if ((upaddr->upcs1&UP_DVA) == 0) | |
877 | return (EFAULT); | |
299d67ed | 878 | if ((upaddr->upds & UPDS_VV) == 0) { |
2601dfbd BJ |
879 | upaddr->upcs1 = UP_DCLR|UP_GO; |
880 | upaddr->upcs1 = UP_PRESET|UP_GO; | |
299d67ed | 881 | upaddr->upof = UPOF_FMT22; |
0ff318b2 | 882 | } |
299d67ed | 883 | if ((upaddr->upds & UPDS_DREADY) != UPDS_DREADY) |
0c48c799 | 884 | return (EFAULT); |
7e00c42b | 885 | st = &upst[ui->ui_type]; |
3f3a34c3 | 886 | sizes = phys(struct size *, st->sizes); |
0c48c799 BJ |
887 | if (dumplo < 0 || dumplo + num >= sizes[minor(dev)&07].nblocks) |
888 | return (EINVAL); | |
0ff318b2 BJ |
889 | while (num > 0) { |
890 | register struct pte *io; | |
891 | register int i; | |
892 | int cn, sn, tn; | |
893 | daddr_t bn; | |
894 | ||
895 | blk = num > DBSIZE ? DBSIZE : num; | |
3f3a34c3 | 896 | io = uba->uba_map; |
0ff318b2 | 897 | for (i = 0; i < blk; i++) |
89bd2f01 | 898 | *(int *)io++ = (btop(start)+i) | (1<<21) | UBAMR_MRV; |
0ff318b2 BJ |
899 | *(int *)io = 0; |
900 | bn = dumplo + btop(start); | |
71236e46 BJ |
901 | cn = bn/st->nspc + sizes[minor(dev)&07].cyloff; |
902 | sn = bn%st->nspc; | |
903 | tn = sn/st->nsect; | |
904 | sn = sn%st->nsect; | |
0ff318b2 BJ |
905 | upaddr->updc = cn; |
906 | rp = (short *) &upaddr->upda; | |
907 | *rp = (tn << 8) + sn; | |
908 | *--rp = 0; | |
909 | *--rp = -blk*NBPG / sizeof (short); | |
2601dfbd | 910 | *--rp = UP_GO|UP_WCOM; |
0ff318b2 BJ |
911 | do { |
912 | DELAY(25); | |
2601dfbd | 913 | } while ((upaddr->upcs1 & UP_RDY) == 0); |
299d67ed | 914 | if (upaddr->upds&UPDS_ERR) |
0c48c799 | 915 | return (EIO); |
0ff318b2 BJ |
916 | start += blk*NBPG; |
917 | num -= blk; | |
918 | } | |
0ff318b2 BJ |
919 | return (0); |
920 | } | |
63c35a63 | 921 | #endif |