Commit | Line | Data |
---|---|---|
443c8066 | 1 | /* up.c 4.24 81/02/26 */ |
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. |
008c0481 | 7 | */ |
355250d9 | 8 | #define DELAY(N) { register int d; d = N; while (--d > 0); } |
008c0481 BJ |
9 | |
10 | #include "../h/param.h" | |
11 | #include "../h/systm.h" | |
3f3a34c3 BJ |
12 | #include "../h/cpu.h" |
13 | #include "../h/nexus.h" | |
41888f16 | 14 | #include "../h/dk.h" |
008c0481 BJ |
15 | #include "../h/buf.h" |
16 | #include "../h/conf.h" | |
17 | #include "../h/dir.h" | |
18 | #include "../h/user.h" | |
19 | #include "../h/map.h" | |
80e7c811 | 20 | #include "../h/pte.h" |
008c0481 BJ |
21 | #include "../h/mba.h" |
22 | #include "../h/mtpr.h" | |
008c0481 | 23 | #include "../h/vm.h" |
b7333467 | 24 | #include "../h/uba.h" |
0ff318b2 | 25 | #include "../h/cmap.h" |
008c0481 | 26 | |
0ff318b2 | 27 | #include "../h/upreg.h" |
008c0481 | 28 | |
3f3a34c3 BJ |
29 | struct up_softc { |
30 | int sc_softas; | |
71236e46 | 31 | int sc_ndrive; |
3f3a34c3 | 32 | int sc_wticks; |
736772ef | 33 | int sc_recal; |
a3cb8f60 | 34 | } up_softc[NSC]; |
008c0481 | 35 | |
3f3a34c3 | 36 | /* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */ |
008c0481 BJ |
37 | struct size |
38 | { | |
39 | daddr_t nblocks; | |
40 | int cyloff; | |
41 | } up_sizes[8] = { | |
42 | 15884, 0, /* A=cyl 0 thru 26 */ | |
43 | 33440, 27, /* B=cyl 27 thru 81 */ | |
d1778415 | 44 | 495520, 0, /* C=cyl 0 thru 814 */ |
008c0481 BJ |
45 | 15884, 562, /* D=cyl 562 thru 588 */ |
46 | 55936, 589, /* E=cyl 589 thru 680 */ | |
47 | 81472, 681, /* F=cyl 681 thru 814 */ | |
48 | 153824, 562, /* G=cyl 562 thru 814 */ | |
008c0481 | 49 | 291346, 82, /* H=cyl 82 thru 561 */ |
3f3a34c3 BJ |
50 | }, fj_sizes[8] = { |
51 | 15884, 0, /* A=cyl 0 thru 49 */ | |
52 | 33440, 50, /* B=cyl 50 thru 154 */ | |
53 | 263360, 0, /* C=cyl 0 thru 822 */ | |
54 | 0, 0, | |
55 | 0, 0, | |
56 | 0, 0, | |
57 | 0, 0, | |
58 | 213760, 155, /* H=cyl 155 thru 822 */ | |
008c0481 | 59 | }; |
3f3a34c3 | 60 | /* END OF STUFF WHICH SHOULD BE READ IN PER DISK */ |
008c0481 | 61 | |
3f3a34c3 BJ |
62 | #define _upSDIST 2 /* 1.0 msec */ |
63 | #define _upRDIST 4 /* 2.0 msec */ | |
64 | ||
65 | int upSDIST = _upSDIST; | |
66 | int upRDIST = _upRDIST; | |
67 | ||
71236e46 | 68 | int upprobe(), upslave(), upattach(), updgo(), upintr(); |
a3cb8f60 | 69 | struct uba_minfo *upminfo[NSC]; |
3f3a34c3 | 70 | struct uba_dinfo *updinfo[NUP]; |
a3cb8f60 | 71 | struct uba_dinfo *upip[NSC][4]; |
d763a2b7 | 72 | |
71236e46 | 73 | u_short upstd[] = { 0776700, 0774400, 0776300, 0 }; |
0801d37f | 74 | struct uba_driver scdriver = |
71236e46 | 75 | { upprobe, upslave, upattach, updgo, upstd, "up", updinfo, "sc", upminfo }; |
3f3a34c3 BJ |
76 | struct buf uputab[NUP]; |
77 | ||
78 | struct upst { | |
79 | short nsect; | |
80 | short ntrak; | |
81 | short nspc; | |
82 | short ncyl; | |
83 | struct size *sizes; | |
84 | } upst[] = { | |
71236e46 BJ |
85 | 32, 19, 32*19, 823, up_sizes, /* 9300/cdc */ |
86 | /* 9300 actually has 815 cylinders... */ | |
3f3a34c3 BJ |
87 | 32, 10, 32*10, 823, fj_sizes, /* fujitsu 160m */ |
88 | }; | |
008c0481 | 89 | |
2601dfbd BJ |
90 | u_char up_offset[16] = { |
91 | UP_P400, UP_M400, UP_P400, UP_M400, UP_P800, UP_M800, UP_P800, UP_M800, | |
92 | UP_P1200, UP_M1200, UP_P1200, UP_M1200, 0, 0, 0, 0 | |
93 | }; | |
008c0481 | 94 | |
0801d37f | 95 | struct buf rupbuf[NUP]; |
008c0481 | 96 | |
008c0481 BJ |
97 | #define b_cylin b_resid |
98 | ||
008c0481 BJ |
99 | #ifdef INTRLVE |
100 | daddr_t dkblock(); | |
101 | #endif | |
3f3a34c3 BJ |
102 | |
103 | int upwstart, upwatch(); /* Have started guardian */ | |
7e00c42b | 104 | int upseek; |
f88f8fdb | 105 | int upwaitdry; |
3f3a34c3 BJ |
106 | |
107 | /*ARGSUSED*/ | |
71236e46 | 108 | upprobe(reg) |
3f3a34c3 | 109 | caddr_t reg; |
008c0481 | 110 | { |
d763a2b7 BJ |
111 | register int br, cvec; |
112 | ||
71236e46 BJ |
113 | #ifdef lint |
114 | br = 0; cvec = br; br = cvec; | |
115 | #endif | |
2601dfbd | 116 | ((struct updevice *)reg)->upcs1 = UP_IE|UP_RDY; |
71236e46 | 117 | DELAY(10); |
2601dfbd | 118 | ((struct updevice *)reg)->upcs1 = 0; |
d763a2b7 | 119 | return (1); |
3f3a34c3 BJ |
120 | } |
121 | ||
71236e46 | 122 | upslave(ui, reg) |
3f3a34c3 BJ |
123 | struct uba_dinfo *ui; |
124 | caddr_t reg; | |
125 | { | |
2601dfbd | 126 | register struct updevice *upaddr = (struct updevice *)reg; |
3f3a34c3 BJ |
127 | |
128 | upaddr->upcs1 = 0; /* conservative */ | |
71236e46 | 129 | upaddr->upcs2 = ui->ui_slave; |
2601dfbd BJ |
130 | if (upaddr->upcs2&UP_NED) { |
131 | upaddr->upcs1 = UP_DCLR|UP_GO; | |
3f3a34c3 BJ |
132 | return (0); |
133 | } | |
71236e46 BJ |
134 | return (1); |
135 | } | |
136 | ||
137 | upattach(ui) | |
138 | register struct uba_dinfo *ui; | |
139 | { | |
2601dfbd BJ |
140 | #ifdef notdef |
141 | register struct updevice *upaddr; | |
142 | #endif | |
71236e46 | 143 | |
6a81870e | 144 | if (upwstart == 0) { |
49c84d3f | 145 | timeout(upwatch, (caddr_t)0, HZ); |
6a81870e BJ |
146 | upwstart++; |
147 | } | |
b7333467 BJ |
148 | if (ui->ui_dk >= 0) |
149 | dk_mspw[ui->ui_dk] = .0000020345; | |
71236e46 BJ |
150 | upip[ui->ui_ctlr][ui->ui_slave] = ui; |
151 | up_softc[ui->ui_ctlr].sc_ndrive++; | |
2601dfbd BJ |
152 | #ifdef notdef |
153 | upaddr = (struct updevice *)ui->ui_addr; | |
154 | upaddr->upcs1 = 0; | |
155 | upaddr->upcs2 = ui->ui_slave; | |
156 | upaddr->uphr = -1; | |
157 | /* ... */ | |
158 | if (upaddr-> ... == 10) | |
159 | ui->ui_type = 1; | |
160 | #endif | |
3f3a34c3 BJ |
161 | } |
162 | ||
3f3a34c3 BJ |
163 | upstrategy(bp) |
164 | register struct buf *bp; | |
165 | { | |
166 | register struct uba_dinfo *ui; | |
3f3a34c3 BJ |
167 | register struct upst *st; |
168 | register int unit; | |
7e00c42b | 169 | register struct buf *dp; |
3f3a34c3 | 170 | int xunit = minor(bp->b_dev) & 07; |
7e00c42b | 171 | long bn, sz; |
3f3a34c3 | 172 | |
7e00c42b | 173 | sz = (bp->b_bcount+511) >> 9; |
008c0481 | 174 | unit = dkunit(bp); |
3f3a34c3 BJ |
175 | if (unit >= NUP) |
176 | goto bad; | |
177 | ui = updinfo[unit]; | |
178 | if (ui == 0 || ui->ui_alive == 0) | |
179 | goto bad; | |
180 | st = &upst[ui->ui_type]; | |
181 | if (bp->b_blkno < 0 || | |
182 | (bn = dkblock(bp))+sz > st->sizes[xunit].nblocks) | |
183 | goto bad; | |
184 | bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff; | |
008c0481 | 185 | (void) spl5(); |
7e00c42b BJ |
186 | dp = &uputab[ui->ui_unit]; |
187 | disksort(dp, bp); | |
188 | if (dp->b_active == 0) { | |
3f3a34c3 BJ |
189 | (void) upustart(ui); |
190 | bp = &ui->ui_mi->um_tab; | |
191 | if (bp->b_actf && bp->b_active == 0) | |
192 | (void) upstart(ui->ui_mi); | |
008c0481 BJ |
193 | } |
194 | (void) spl0(); | |
3f3a34c3 BJ |
195 | return; |
196 | ||
197 | bad: | |
198 | bp->b_flags |= B_ERROR; | |
199 | iodone(bp); | |
200 | return; | |
008c0481 BJ |
201 | } |
202 | ||
736772ef BJ |
203 | /* |
204 | * Unit start routine. | |
205 | * Seek the drive to be where the data is | |
206 | * and then generate another interrupt | |
207 | * to actually start the transfer. | |
208 | * If there is only one drive on the controller, | |
209 | * or we are very close to the data, don't | |
210 | * bother with the search. If called after | |
211 | * searching once, don't bother to look where | |
212 | * we are, just queue for transfer (to avoid | |
213 | * positioning forever without transferrring.) | |
214 | */ | |
3f3a34c3 BJ |
215 | upustart(ui) |
216 | register struct uba_dinfo *ui; | |
008c0481 BJ |
217 | { |
218 | register struct buf *bp, *dp; | |
736772ef | 219 | register struct uba_minfo *um = ui->ui_mi; |
2601dfbd | 220 | register struct updevice *upaddr; |
3f3a34c3 | 221 | register struct upst *st; |
008c0481 | 222 | daddr_t bn; |
736772ef | 223 | int sn, csn; |
71236e46 BJ |
224 | /* |
225 | * The SC21 cancels commands if you just say | |
2601dfbd | 226 | * cs1 = UP_IE |
71236e46 BJ |
227 | * so we are cautious about handling of cs1. |
228 | * Also don't bother to clear as bits other than in upintr(). | |
229 | */ | |
736772ef BJ |
230 | int didie = 0; |
231 | ||
232 | if (ui == 0) | |
233 | return (0); | |
3f3a34c3 BJ |
234 | dk_busy &= ~(1<<ui->ui_dk); |
235 | dp = &uputab[ui->ui_unit]; | |
7bc8d985 | 236 | if ((bp = dp->b_actf) == NULL) |
eb891eaa | 237 | goto out; |
736772ef BJ |
238 | /* |
239 | * If the controller is active, just remember | |
240 | * that this device would like to be positioned... | |
241 | * if we tried to position now we would confuse the SC21. | |
242 | */ | |
3f3a34c3 | 243 | if (um->um_tab.b_active) { |
d763a2b7 | 244 | up_softc[um->um_ctlr].sc_softas |= 1<<ui->ui_slave; |
2a3b9a7f BJ |
245 | return (0); |
246 | } | |
736772ef BJ |
247 | /* |
248 | * If we have already positioned this drive, | |
249 | * then just put it on the ready queue. | |
250 | */ | |
a3f430e0 BJ |
251 | if (dp->b_active) |
252 | goto done; | |
253 | dp->b_active = 1; | |
2601dfbd | 254 | upaddr = (struct updevice *)um->um_addr; |
3f3a34c3 | 255 | upaddr->upcs2 = ui->ui_slave; |
736772ef BJ |
256 | /* |
257 | * If drive has just come up, | |
258 | * setup the pack. | |
259 | */ | |
2601dfbd | 260 | if ((upaddr->upds & UP_VV) == 0) { |
71236e46 | 261 | /* SHOULD WARN SYSTEM THAT THIS HAPPENED */ |
2601dfbd BJ |
262 | upaddr->upcs1 = UP_IE|UP_DCLR|UP_GO; |
263 | upaddr->upcs1 = UP_IE|UP_PRESET|UP_GO; | |
264 | upaddr->upof = UP_FMT22; | |
eb891eaa | 265 | didie = 1; |
008c0481 | 266 | } |
736772ef BJ |
267 | /* |
268 | * If drive is offline, forget about positioning. | |
269 | */ | |
2601dfbd | 270 | if ((upaddr->upds & (UP_DPR|UP_MOL)) != (UP_DPR|UP_MOL)) |
2a3b9a7f | 271 | goto done; |
736772ef BJ |
272 | /* |
273 | * If there is only one drive, | |
274 | * dont bother searching. | |
275 | */ | |
71236e46 BJ |
276 | if (up_softc[um->um_ctlr].sc_ndrive == 1) |
277 | goto done; | |
736772ef BJ |
278 | /* |
279 | * Figure out where this transfer is going to | |
280 | * and see if we are close enough to justify not searching. | |
281 | */ | |
3f3a34c3 | 282 | st = &upst[ui->ui_type]; |
008c0481 | 283 | bn = dkblock(bp); |
3f3a34c3 BJ |
284 | sn = bn%st->nspc; |
285 | sn = (sn + st->nsect - upSDIST) % st->nsect; | |
736772ef | 286 | if (bp->b_cylin - upaddr->updc) |
7bc8d985 | 287 | goto search; /* Not on-cylinder */ |
2a3b9a7f BJ |
288 | else if (upseek) |
289 | goto done; /* Ok just to be on-cylinder */ | |
008c0481 | 290 | csn = (upaddr->upla>>6) - sn - 1; |
7bc8d985 | 291 | if (csn < 0) |
3f3a34c3 BJ |
292 | csn += st->nsect; |
293 | if (csn > st->nsect - upRDIST) | |
008c0481 | 294 | goto done; |
008c0481 | 295 | search: |
736772ef BJ |
296 | upaddr->updc = bp->b_cylin; |
297 | /* | |
298 | * Not on cylinder at correct position, | |
299 | * seek/search. | |
300 | */ | |
2a3b9a7f | 301 | if (upseek) |
2601dfbd | 302 | upaddr->upcs1 = UP_IE|UP_SEEK|UP_GO; |
7e00c42b | 303 | else { |
2a3b9a7f | 304 | upaddr->upda = sn; |
2601dfbd | 305 | upaddr->upcs1 = UP_IE|UP_SEARCH|UP_GO; |
2a3b9a7f | 306 | } |
eb891eaa | 307 | didie = 1; |
736772ef BJ |
308 | /* |
309 | * Mark unit busy for iostat. | |
310 | */ | |
3f3a34c3 BJ |
311 | if (ui->ui_dk >= 0) { |
312 | dk_busy |= 1<<ui->ui_dk; | |
313 | dk_seek[ui->ui_dk]++; | |
008c0481 | 314 | } |
eb891eaa | 315 | goto out; |
008c0481 | 316 | done: |
736772ef BJ |
317 | /* |
318 | * Device is ready to go. | |
319 | * Put it on the ready queue for the controller | |
320 | * (unless its already there.) | |
321 | */ | |
2601dfbd BJ |
322 | if (dp->b_active != 2) { |
323 | dp->b_forw = NULL; | |
324 | if (um->um_tab.b_actf == NULL) | |
325 | um->um_tab.b_actf = dp; | |
326 | else | |
327 | um->um_tab.b_actl->b_forw = dp; | |
328 | um->um_tab.b_actl = dp; | |
329 | dp->b_active = 2; | |
330 | } | |
eb891eaa BJ |
331 | out: |
332 | return (didie); | |
008c0481 BJ |
333 | } |
334 | ||
736772ef BJ |
335 | /* |
336 | * Start up a transfer on a drive. | |
337 | */ | |
3f3a34c3 BJ |
338 | upstart(um) |
339 | register struct uba_minfo *um; | |
008c0481 BJ |
340 | { |
341 | register struct buf *bp, *dp; | |
3f3a34c3 | 342 | register struct uba_dinfo *ui; |
2601dfbd | 343 | register struct updevice *upaddr; |
7e00c42b | 344 | struct upst *st; |
008c0481 | 345 | daddr_t bn; |
f88f8fdb | 346 | int dn, sn, tn, cmd, waitdry; |
008c0481 | 347 | |
008c0481 | 348 | loop: |
736772ef BJ |
349 | /* |
350 | * Pull a request off the controller queue | |
351 | */ | |
3f3a34c3 | 352 | if ((dp = um->um_tab.b_actf) == NULL) |
eb891eaa | 353 | return (0); |
008c0481 | 354 | if ((bp = dp->b_actf) == NULL) { |
3f3a34c3 | 355 | um->um_tab.b_actf = dp->b_forw; |
008c0481 BJ |
356 | goto loop; |
357 | } | |
736772ef BJ |
358 | /* |
359 | * Mark controller busy, and | |
360 | * determine destination of this request. | |
361 | */ | |
3f3a34c3 BJ |
362 | um->um_tab.b_active++; |
363 | ui = updinfo[dkunit(bp)]; | |
008c0481 | 364 | bn = dkblock(bp); |
3f3a34c3 BJ |
365 | dn = ui->ui_slave; |
366 | st = &upst[ui->ui_type]; | |
367 | sn = bn%st->nspc; | |
368 | tn = sn/st->nsect; | |
369 | sn %= st->nsect; | |
2601dfbd | 370 | upaddr = (struct updevice *)ui->ui_addr; |
736772ef BJ |
371 | /* |
372 | * Select drive if not selected already. | |
373 | */ | |
374 | if ((upaddr->upcs2&07) != dn) | |
375 | upaddr->upcs2 = dn; | |
376 | /* | |
377 | * Check that it is ready and online | |
378 | */ | |
f88f8fdb BJ |
379 | waitdry = 0; |
380 | while ((upaddr->upds&UP_DRY) == 0) { | |
381 | if (++waitdry > 512) | |
382 | break; | |
383 | upwaitdry++; | |
384 | } | |
385 | if ((upaddr->upds & UP_DREADY) != UP_DREADY) { | |
71236e46 | 386 | printf("up%d not ready", dkunit(bp)); |
f88f8fdb | 387 | if ((upaddr->upds & UP_DREADY) != UP_DREADY) { |
71236e46 | 388 | printf("\n"); |
3f3a34c3 BJ |
389 | um->um_tab.b_active = 0; |
390 | um->um_tab.b_errcnt = 0; | |
88253fd2 BJ |
391 | dp->b_actf = bp->av_forw; |
392 | dp->b_active = 0; | |
393 | bp->b_flags |= B_ERROR; | |
394 | iodone(bp); | |
88253fd2 BJ |
395 | goto loop; |
396 | } | |
736772ef BJ |
397 | /* |
398 | * Oh, well, sometimes this | |
399 | * happens, for reasons unknown. | |
400 | */ | |
2601dfbd | 401 | printf(" (flakey)\n"); |
008c0481 | 402 | } |
736772ef BJ |
403 | /* |
404 | * After 16th retry, do offset positioning | |
405 | */ | |
3f3a34c3 | 406 | if (um->um_tab.b_errcnt >= 16 && (bp->b_flags&B_READ) != 0) { |
2601dfbd BJ |
407 | upaddr->upof = up_offset[um->um_tab.b_errcnt & 017] | UP_FMT22; |
408 | upaddr->upcs1 = UP_IE|UP_OFFSET|UP_GO; | |
409 | while (upaddr->upds & UP_PIP) | |
008c0481 BJ |
410 | DELAY(25); |
411 | } | |
736772ef BJ |
412 | /* |
413 | * Setup for the transfer, and get in the | |
414 | * UNIBUS adaptor queue. | |
415 | */ | |
5aa9d5ea | 416 | upaddr->updc = bp->b_cylin; |
008c0481 | 417 | upaddr->upda = (tn << 8) + sn; |
008c0481 BJ |
418 | upaddr->upwc = -bp->b_bcount / sizeof (short); |
419 | if (bp->b_flags & B_READ) | |
2601dfbd | 420 | cmd = UP_IE|UP_RCOM|UP_GO; |
008c0481 | 421 | else |
2601dfbd | 422 | cmd = UP_IE|UP_WCOM|UP_GO; |
b7333467 BJ |
423 | um->um_cmd = cmd; |
424 | ubago(ui); | |
eb891eaa | 425 | return (1); |
008c0481 BJ |
426 | } |
427 | ||
736772ef BJ |
428 | /* |
429 | * Now all ready to go, stuff the registers. | |
430 | */ | |
b7333467 BJ |
431 | updgo(um) |
432 | struct uba_minfo *um; | |
3f3a34c3 | 433 | { |
2601dfbd | 434 | register struct updevice *upaddr = (struct updevice *)um->um_addr; |
7e00c42b | 435 | |
b7333467 BJ |
436 | upaddr->upba = um->um_ubinfo; |
437 | upaddr->upcs1 = um->um_cmd|((um->um_ubinfo>>8)&0x300); | |
3f3a34c3 BJ |
438 | } |
439 | ||
736772ef BJ |
440 | /* |
441 | * Handle a disk interrupt. | |
442 | */ | |
443c8066 | 443 | upintr(sc21) |
3f3a34c3 | 444 | register sc21; |
008c0481 BJ |
445 | { |
446 | register struct buf *bp, *dp; | |
3f3a34c3 BJ |
447 | register struct uba_minfo *um = upminfo[sc21]; |
448 | register struct uba_dinfo *ui; | |
2601dfbd | 449 | register struct updevice *upaddr = (struct updevice *)um->um_addr; |
008c0481 | 450 | register unit; |
7e00c42b | 451 | struct up_softc *sc = &up_softc[um->um_ctlr]; |
71236e46 | 452 | int as = (upaddr->upas & 0377) | sc->sc_softas; |
f88f8fdb | 453 | int needie = 1, waitdry; |
008c0481 | 454 | |
7e00c42b | 455 | sc->sc_wticks = 0; |
71236e46 | 456 | sc->sc_softas = 0; |
736772ef BJ |
457 | /* |
458 | * If controller wasn't transferring, then this is an | |
459 | * interrupt for attention status on seeking drives. | |
460 | * Just service them. | |
461 | */ | |
462 | if (um->um_tab.b_active == 0) { | |
463 | if (upaddr->upcs1 & UP_TRE) | |
464 | upaddr->upcs1 = UP_TRE; | |
465 | goto doattn; | |
466 | } | |
467 | if ((upaddr->upcs1 & UP_RDY) == 0) | |
468 | printf("upintr !RDY\n"); /* shouldn't happen */ | |
469 | /* | |
470 | * Get device and block structures, and a pointer | |
471 | * to the uba_dinfo for the drive. Select the drive. | |
472 | */ | |
473 | dp = um->um_tab.b_actf; | |
474 | bp = dp->b_actf; | |
475 | ui = updinfo[dkunit(bp)]; | |
476 | dk_busy &= ~(1 << ui->ui_dk); | |
477 | if ((upaddr->upcs2&07) != ui->ui_slave) | |
3f3a34c3 | 478 | upaddr->upcs2 = ui->ui_slave; |
736772ef BJ |
479 | /* |
480 | * Check for and process errors on | |
481 | * either the drive or the controller. | |
482 | */ | |
483 | if ((upaddr->upds&UP_ERR) || (upaddr->upcs1&UP_TRE)) { | |
f88f8fdb BJ |
484 | waitdry = 0; |
485 | while ((upaddr->upds & UP_DRY) == 0) { | |
486 | if (++waitdry > 512) | |
487 | break; | |
488 | upwaitdry++; | |
489 | } | |
490 | if ((upaddr->upds&UP_DREADY) != UP_DREADY) { | |
491 | printf("up%d not ready", dkunit(bp)); | |
492 | bp->b_flags |= B_ERROR; | |
493 | } else if (upaddr->uper1&UP_WLE) { | |
736772ef BJ |
494 | /* |
495 | * Give up on write locked devices | |
496 | * immediately. | |
497 | */ | |
498 | printf("up%d is write locked\n", dkunit(bp)); | |
499 | bp->b_flags |= B_ERROR; | |
500 | } else if (++um->um_tab.b_errcnt > 27) { | |
501 | /* | |
502 | * After 28 retries (16 without offset, and | |
503 | * 12 with offset positioning) give up. | |
504 | */ | |
505 | if (upaddr->upcs2&(UP_NEM|UP_MXF)) { | |
506 | printf("FLAKEY UP "); | |
507 | ubareset(um->um_ubanum); | |
508 | return; | |
3f3a34c3 | 509 | } |
736772ef BJ |
510 | harderr(bp); |
511 | printf("up%d cs2 %b er1 %b er2 %b\n", | |
512 | dkunit(bp), upaddr->upcs2, UPCS2_BITS, upaddr->uper1, | |
513 | UPER1_BITS, upaddr->uper2, UPER2_BITS); | |
514 | bp->b_flags |= B_ERROR; | |
515 | } else { | |
516 | /* | |
517 | * Retriable error. | |
518 | * If a soft ecc, correct it (continuing | |
519 | * by returning if necessary. | |
520 | * Otherwise fall through and retry the transfer | |
521 | */ | |
522 | um->um_tab.b_active = 0; /* force retry */ | |
2601dfbd BJ |
523 | if ((upaddr->uper1&(UP_DCK|UP_ECH))==UP_DCK) |
524 | if (upecc(ui)) | |
525 | return; | |
736772ef BJ |
526 | } |
527 | /* | |
528 | * Clear drive error and, every eight attempts, | |
529 | * (starting with the fourth) | |
530 | * recalibrate to clear the slate. | |
531 | */ | |
532 | upaddr->upcs1 = UP_TRE|UP_IE|UP_DCLR|UP_GO; | |
533 | needie = 0; | |
534 | if ((um->um_tab.b_errcnt&07) == 4) { | |
535 | upaddr->upcs1 = UP_RECAL|UP_IE|UP_GO; | |
536 | um->um_tab.b_active = 1; | |
537 | sc->sc_recal = 1; | |
538 | return; | |
539 | } | |
540 | } | |
541 | /* | |
542 | * Done retrying transfer... release | |
543 | * resources... if we were recalibrating, | |
544 | * then retry the transfer. | |
545 | * Mathematical note: 28%8 != 4. | |
546 | */ | |
547 | ubadone(um); | |
548 | if (sc->sc_recal) { | |
549 | sc->sc_recal = 0; | |
550 | um->um_tab.b_active = 0; /* force retry */ | |
551 | } | |
552 | /* | |
553 | * If still ``active'', then don't need any more retries. | |
554 | */ | |
555 | if (um->um_tab.b_active) { | |
556 | /* | |
557 | * If we were offset positioning, | |
558 | * return to centerline. | |
559 | */ | |
560 | if (um->um_tab.b_errcnt >= 16) { | |
561 | upaddr->upof = UP_FMT22; | |
562 | upaddr->upcs1 = UP_RTC|UP_GO|UP_IE; | |
563 | while (upaddr->upds & UP_PIP) | |
564 | DELAY(25); | |
eb891eaa | 565 | needie = 0; |
008c0481 | 566 | } |
736772ef BJ |
567 | um->um_tab.b_active = 0; |
568 | um->um_tab.b_errcnt = 0; | |
569 | um->um_tab.b_actf = dp->b_forw; | |
570 | dp->b_active = 0; | |
571 | dp->b_errcnt = 0; | |
572 | dp->b_actf = bp->av_forw; | |
573 | bp->b_resid = (-upaddr->upwc * sizeof(short)); | |
574 | iodone(bp); | |
575 | /* | |
576 | * If this unit has more work to do, | |
577 | * then start it up right away. | |
578 | */ | |
579 | if (dp->b_actf) | |
580 | if (upustart(ui)) | |
eb891eaa | 581 | needie = 0; |
008c0481 | 582 | } |
736772ef BJ |
583 | as &= ~(1<<ui->ui_slave); |
584 | doattn: | |
585 | /* | |
586 | * Process other units which need attention. | |
587 | * For each unit which needs attention, call | |
588 | * the unit start routine to place the slave | |
589 | * on the controller device queue. | |
590 | */ | |
71236e46 BJ |
591 | for (unit = 0; as; as >>= 1, unit++) |
592 | if (as & 1) { | |
7e00c42b | 593 | upaddr->upas = 1<<unit; |
71236e46 | 594 | if (upustart(upip[sc21][unit])) |
1f3d30ee BJ |
595 | needie = 0; |
596 | } | |
736772ef BJ |
597 | /* |
598 | * If the controller is not transferring, but | |
599 | * there are devices ready to transfer, start | |
600 | * the controller. | |
601 | */ | |
3f3a34c3 BJ |
602 | if (um->um_tab.b_actf && um->um_tab.b_active == 0) |
603 | if (upstart(um)) | |
eb891eaa | 604 | needie = 0; |
2a3b9a7f | 605 | if (needie) |
2601dfbd | 606 | upaddr->upcs1 = UP_IE; |
008c0481 BJ |
607 | } |
608 | ||
609 | upread(dev) | |
0801d37f | 610 | dev_t dev; |
008c0481 | 611 | { |
0801d37f | 612 | register int unit = minor(dev) >> 3; |
7e00c42b | 613 | |
0801d37f BJ |
614 | if (unit >= NUP) |
615 | u.u_error = ENXIO; | |
616 | else | |
617 | physio(upstrategy, &rupbuf[unit], dev, B_READ, minphys); | |
008c0481 BJ |
618 | } |
619 | ||
620 | upwrite(dev) | |
0801d37f | 621 | dev_t dev; |
008c0481 | 622 | { |
0801d37f | 623 | register int unit = minor(dev) >> 3; |
7e00c42b | 624 | |
0801d37f BJ |
625 | if (unit >= NUP) |
626 | u.u_error = ENXIO; | |
627 | else | |
628 | physio(upstrategy, &rupbuf[unit], dev, B_WRITE, minphys); | |
008c0481 BJ |
629 | } |
630 | ||
7bc8d985 BJ |
631 | /* |
632 | * Correct an ECC error, and restart the i/o to complete | |
633 | * the transfer if necessary. This is quite complicated because | |
634 | * the transfer may be going to an odd memory address base and/or | |
635 | * across a page boundary. | |
636 | */ | |
3f3a34c3 BJ |
637 | upecc(ui) |
638 | register struct uba_dinfo *ui; | |
008c0481 | 639 | { |
2601dfbd | 640 | register struct updevice *up = (struct updevice *)ui->ui_addr; |
3f3a34c3 BJ |
641 | register struct buf *bp = uputab[ui->ui_unit].b_actf; |
642 | register struct uba_minfo *um = ui->ui_mi; | |
643 | register struct upst *st; | |
644 | struct uba_regs *ubp = ui->ui_hd->uh_uba; | |
7bc8d985 | 645 | register int i; |
008c0481 | 646 | caddr_t addr; |
7bc8d985 | 647 | int reg, bit, byte, npf, mask, o, cmd, ubaddr; |
008c0481 BJ |
648 | int bn, cn, tn, sn; |
649 | ||
008c0481 | 650 | /* |
7bc8d985 BJ |
651 | * Npf is the number of sectors transferred before the sector |
652 | * containing the ECC error, and reg is the UBA register | |
653 | * mapping (the first part of) the transfer. | |
654 | * O is offset within a memory page of the first byte transferred. | |
008c0481 | 655 | */ |
7bc8d985 | 656 | npf = btop((up->upwc * sizeof(short)) + bp->b_bcount) - 1; |
b7333467 | 657 | reg = btop(um->um_ubinfo&0x3ffff) + npf; |
008c0481 BJ |
658 | o = (int)bp->b_un.b_addr & PGOFSET; |
659 | printf("%D ", bp->b_blkno+npf); | |
660 | prdev("ECC", bp->b_dev); | |
661 | mask = up->upec2; | |
662 | if (mask == 0) { | |
2601dfbd | 663 | up->upof = UP_FMT22; /* == RTC ???? */ |
008c0481 BJ |
664 | return (0); |
665 | } | |
7bc8d985 BJ |
666 | /* |
667 | * Flush the buffered data path, and compute the | |
668 | * byte and bit position of the error. The variable i | |
669 | * is the byte offset in the transfer, the variable byte | |
670 | * is the offset from a page boundary in main memory. | |
671 | */ | |
b7333467 | 672 | ubp->uba_dpr[(um->um_ubinfo>>28)&0x0f] |= UBA_BNE; |
7bc8d985 BJ |
673 | i = up->upec1 - 1; /* -1 makes 0 origin */ |
674 | bit = i&07; | |
675 | i = (i&~07)>>3; | |
008c0481 | 676 | byte = i + o; |
7bc8d985 BJ |
677 | /* |
678 | * Correct while possible bits remain of mask. Since mask | |
679 | * contains 11 bits, we continue while the bit offset is > -11. | |
680 | * Also watch out for end of this block and the end of the whole | |
681 | * transfer. | |
682 | */ | |
683 | while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) { | |
684 | addr = ptob(ubp->uba_map[reg+btop(byte)].pg_pfnum)+ | |
685 | (byte & PGOFSET); | |
686 | putmemc(addr, getmemc(addr)^(mask<<bit)); | |
687 | byte++; | |
688 | i++; | |
689 | bit -= 8; | |
008c0481 | 690 | } |
3f3a34c3 | 691 | um->um_tab.b_active++; /* Either complete or continuing... */ |
008c0481 BJ |
692 | if (up->upwc == 0) |
693 | return (0); | |
7bc8d985 BJ |
694 | /* |
695 | * Have to continue the transfer... clear the drive, | |
696 | * and compute the position where the transfer is to continue. | |
697 | * We have completed npf+1 sectors of the transfer already; | |
698 | * restart at offset o of next sector (i.e. in UBA register reg+1). | |
699 | */ | |
2601dfbd BJ |
700 | #ifdef notdef |
701 | up->uper1 = 0; | |
702 | up->upcs1 |= UP_GO; | |
703 | #else | |
704 | up->upcs1 = UP_TRE|UP_IE|UP_DCLR|UP_GO; | |
008c0481 | 705 | bn = dkblock(bp); |
3f3a34c3 | 706 | st = &upst[ui->ui_type]; |
008c0481 | 707 | cn = bp->b_cylin; |
3f3a34c3 BJ |
708 | sn = bn%st->nspc + npf + 1; |
709 | tn = sn/st->nsect; | |
710 | sn %= st->nsect; | |
711 | cn += tn/st->ntrak; | |
712 | tn %= st->ntrak; | |
008c0481 | 713 | up->updc = cn; |
7bc8d985 BJ |
714 | up->upda = (tn << 8) | sn; |
715 | ubaddr = (int)ptob(reg+1) + o; | |
716 | up->upba = ubaddr; | |
717 | cmd = (ubaddr >> 8) & 0x300; | |
2601dfbd | 718 | cmd |= UP_IE|UP_GO|UP_RCOM; |
7bc8d985 | 719 | up->upcs1 = cmd; |
2601dfbd | 720 | #endif |
008c0481 BJ |
721 | return (1); |
722 | } | |
977c2848 BJ |
723 | |
724 | /* | |
725 | * Reset driver after UBA init. | |
726 | * Cancel software state of all pending transfers | |
727 | * and restart all units and the controller. | |
728 | */ | |
3f3a34c3 | 729 | upreset(uban) |
977c2848 | 730 | { |
3f3a34c3 BJ |
731 | register struct uba_minfo *um; |
732 | register struct uba_dinfo *ui; | |
733 | register sc21, unit; | |
5aa9d5ea | 734 | int any = 0; |
3f3a34c3 | 735 | |
a3cb8f60 | 736 | for (sc21 = 0; sc21 < NSC; sc21++) { |
7e00c42b BJ |
737 | if ((um = upminfo[sc21]) == 0 || um->um_ubanum != uban || |
738 | um->um_alive == 0) | |
3f3a34c3 | 739 | continue; |
5aa9d5ea RE |
740 | if (any == 0) { |
741 | printf(" up"); | |
7e00c42b | 742 | DELAY(10000000); /* give it time to self-test */ |
5aa9d5ea RE |
743 | any++; |
744 | } | |
3f3a34c3 BJ |
745 | um->um_tab.b_active = 0; |
746 | um->um_tab.b_actf = um->um_tab.b_actl = 0; | |
b7333467 BJ |
747 | if (um->um_ubinfo) { |
748 | printf("<%d>", (um->um_ubinfo>>28)&0xf); | |
0801d37f | 749 | ubadone(um); |
3f3a34c3 | 750 | } |
2601dfbd | 751 | ((struct updevice *)(um->um_addr))->upcs2 = UP_CLR; |
3f3a34c3 BJ |
752 | for (unit = 0; unit < NUP; unit++) { |
753 | if ((ui = updinfo[unit]) == 0) | |
754 | continue; | |
755 | if (ui->ui_alive == 0) | |
756 | continue; | |
757 | uputab[unit].b_active = 0; | |
758 | (void) upustart(ui); | |
759 | } | |
760 | (void) upstart(um); | |
977c2848 | 761 | } |
977c2848 | 762 | } |
6a81870e BJ |
763 | |
764 | /* | |
765 | * Wake up every second and if an interrupt is pending | |
766 | * but nothing has happened increment a counter. | |
767 | * If nothing happens for 20 seconds, reset the controller | |
768 | * and begin anew. | |
769 | */ | |
770 | upwatch() | |
771 | { | |
3f3a34c3 BJ |
772 | register struct uba_minfo *um; |
773 | register sc21, unit; | |
7e00c42b | 774 | register struct up_softc *sc; |
6a81870e | 775 | |
49c84d3f | 776 | timeout(upwatch, (caddr_t)0, HZ); |
a3cb8f60 | 777 | for (sc21 = 0; sc21 < NSC; sc21++) { |
3f3a34c3 | 778 | um = upminfo[sc21]; |
7e00c42b BJ |
779 | if (um == 0 || um->um_alive == 0) |
780 | continue; | |
781 | sc = &up_softc[sc21]; | |
3f3a34c3 BJ |
782 | if (um->um_tab.b_active == 0) { |
783 | for (unit = 0; unit < NUP; unit++) | |
2601dfbd BJ |
784 | if (uputab[unit].b_active && |
785 | updinfo[unit]->ui_mi == um) | |
3f3a34c3 | 786 | goto active; |
7e00c42b | 787 | sc->sc_wticks = 0; |
3f3a34c3 BJ |
788 | continue; |
789 | } | |
790 | active: | |
7e00c42b BJ |
791 | sc->sc_wticks++; |
792 | if (sc->sc_wticks >= 20) { | |
793 | sc->sc_wticks = 0; | |
a3cb8f60 BJ |
794 | printf("LOST upintr "); |
795 | ubareset(um->um_ubanum); | |
3f3a34c3 | 796 | } |
6a81870e BJ |
797 | } |
798 | } | |
0ff318b2 BJ |
799 | |
800 | #define DBSIZE 20 | |
801 | ||
802 | updump(dev) | |
803 | dev_t dev; | |
804 | { | |
2601dfbd | 805 | struct updevice *upaddr; |
0ff318b2 | 806 | char *start; |
71236e46 | 807 | int num, blk, unit; |
0ff318b2 | 808 | struct size *sizes; |
3f3a34c3 BJ |
809 | register struct uba_regs *uba; |
810 | register struct uba_dinfo *ui; | |
0ff318b2 | 811 | register short *rp; |
3f3a34c3 | 812 | struct upst *st; |
0ff318b2 | 813 | |
0ff318b2 BJ |
814 | unit = minor(dev) >> 3; |
815 | if (unit >= NUP) { | |
816 | printf("bad unit\n"); | |
817 | return (-1); | |
818 | } | |
7e00c42b | 819 | #define phys(cast, addr) ((cast)((int)addr & 0x7fffffff)) |
3f3a34c3 BJ |
820 | ui = phys(struct uba_dinfo *, updinfo[unit]); |
821 | if (ui->ui_alive == 0) { | |
822 | printf("dna\n"); | |
823 | return(-1); | |
824 | } | |
825 | uba = phys(struct uba_hd *, ui->ui_hd)->uh_physuba; | |
826 | #if VAX780 | |
7e00c42b BJ |
827 | if (cpu == VAX_780) |
828 | ubainit(uba); | |
3f3a34c3 BJ |
829 | #endif |
830 | DELAY(1000000); | |
2601dfbd BJ |
831 | upaddr = (struct updevice *)ui->ui_physaddr; |
832 | while ((upaddr->upcs1&UP_DVA) == 0) | |
3f3a34c3 BJ |
833 | ; |
834 | num = maxfree; | |
835 | start = 0; | |
0ff318b2 | 836 | upaddr->upcs2 = unit; |
2601dfbd BJ |
837 | if ((upaddr->upds & UP_VV) == 0) { |
838 | upaddr->upcs1 = UP_DCLR|UP_GO; | |
839 | upaddr->upcs1 = UP_PRESET|UP_GO; | |
840 | upaddr->upof = UP_FMT22; | |
0ff318b2 | 841 | } |
2601dfbd BJ |
842 | if ((upaddr->upds & (UP_DPR|UP_MOL)) != (UP_DPR|UP_MOL)) { |
843 | printf("dna\n"); | |
0ff318b2 BJ |
844 | return (-1); |
845 | } | |
7e00c42b | 846 | st = &upst[ui->ui_type]; |
3f3a34c3 | 847 | sizes = phys(struct size *, st->sizes); |
0ff318b2 | 848 | if (dumplo < 0 || dumplo + num >= sizes[minor(dev)&07].nblocks) { |
3f3a34c3 | 849 | printf("oor\n"); |
0ff318b2 BJ |
850 | return (-1); |
851 | } | |
0ff318b2 BJ |
852 | while (num > 0) { |
853 | register struct pte *io; | |
854 | register int i; | |
855 | int cn, sn, tn; | |
856 | daddr_t bn; | |
857 | ||
858 | blk = num > DBSIZE ? DBSIZE : num; | |
3f3a34c3 | 859 | io = uba->uba_map; |
0ff318b2 | 860 | for (i = 0; i < blk; i++) |
3f3a34c3 | 861 | *(int *)io++ = (btop(start)+i) | (1<<21) | UBA_MRV; |
0ff318b2 BJ |
862 | *(int *)io = 0; |
863 | bn = dumplo + btop(start); | |
71236e46 BJ |
864 | cn = bn/st->nspc + sizes[minor(dev)&07].cyloff; |
865 | sn = bn%st->nspc; | |
866 | tn = sn/st->nsect; | |
867 | sn = sn%st->nsect; | |
0ff318b2 BJ |
868 | upaddr->updc = cn; |
869 | rp = (short *) &upaddr->upda; | |
870 | *rp = (tn << 8) + sn; | |
871 | *--rp = 0; | |
872 | *--rp = -blk*NBPG / sizeof (short); | |
2601dfbd | 873 | *--rp = UP_GO|UP_WCOM; |
0ff318b2 BJ |
874 | do { |
875 | DELAY(25); | |
2601dfbd BJ |
876 | } while ((upaddr->upcs1 & UP_RDY) == 0); |
877 | if (upaddr->upcs1&UP_ERR) { | |
0ff318b2 BJ |
878 | printf("up dump dsk err: (%d,%d,%d) cs1=%x, er1=%x\n", |
879 | cn, tn, sn, upaddr->upcs1, upaddr->uper1); | |
880 | return (-1); | |
881 | } | |
882 | start += blk*NBPG; | |
883 | num -= blk; | |
884 | } | |
0ff318b2 BJ |
885 | return (0); |
886 | } | |
63c35a63 | 887 | #endif |