Commit | Line | Data |
---|---|---|
80d17733 | 1 | #define WD_COUNT_RETRIES |
6d2dcc99 NW |
2 | static int wdtest = 0; |
3 | ||
15637ed4 RG |
4 | /*- |
5 | * Copyright (c) 1990 The Regents of the University of California. | |
6 | * All rights reserved. | |
7 | * | |
8 | * This code is derived from software contributed to Berkeley by | |
9 | * William Jolitz. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. All advertising materials mentioning features or use of this software | |
20 | * must display the following acknowledgement: | |
21 | * This product includes software developed by the University of | |
22 | * California, Berkeley and its contributors. | |
23 | * 4. Neither the name of the University nor the names of its contributors | |
24 | * may be used to endorse or promote products derived from this software | |
25 | * without specific prior written permission. | |
26 | * | |
27 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
37 | * SUCH DAMAGE. | |
38 | * | |
80d17733 | 39 | * from: @(#)wd.c 7.2 (Berkeley) 5/9/91 |
e816cd8c | 40 | * $Id: wd.c,v 1.32 1994/02/22 22:13:37 rgrimes Exp $ |
15637ed4 RG |
41 | */ |
42 | ||
80d17733 NW |
43 | /* TODO: |
44 | * o Fix timeout from 2 to about 4 seconds. | |
45 | * o Bump error count after timeout. | |
46 | * o Satisfy ATA timing in all cases. | |
47 | * o Finish merging berry/sos timeout code (bump error count...). | |
48 | * o Merge/fix TIH/NetBSD bad144 code. | |
49 | * o Merge/fix Dyson/NetBSD clustering code. | |
50 | * o Don't use polling except for initialization. Need to | |
51 | * reorganize the state machine. Then "extra" interrupts | |
52 | * shouldn't happen (except maybe one for initialization). | |
53 | * o Fix disklabel, boot and driver inconsistencies with | |
54 | * bad144 in standard versions. | |
55 | * o Support extended DOS partitions. | |
56 | * o Support swapping to DOS partitions. | |
57 | * o Look at latest linux clustering methods. Our disksort() | |
58 | * gets in the way of clustering. | |
59 | * o Handle bad sectors, clustering, disklabelling, DOS | |
60 | * partitions and swapping driver-independently. Use | |
61 | * i386/dkbad.c for bad sectors. Swapping will need new | |
62 | * driver entries for polled reinit and polled write). | |
63 | */ | |
15637ed4 RG |
64 | |
65 | #include "wd.h" | |
6d2dcc99 | 66 | #if NWDC > 0 |
15637ed4 RG |
67 | |
68 | #include "param.h" | |
69 | #include "dkbad.h" | |
70 | #include "systm.h" | |
fde1aeb2 | 71 | #include "kernel.h" |
15637ed4 RG |
72 | #include "conf.h" |
73 | #include "file.h" | |
74 | #include "stat.h" | |
75 | #include "ioctl.h" | |
76 | #include "disklabel.h" | |
77 | #include "buf.h" | |
78 | #include "uio.h" | |
79 | #include "malloc.h" | |
80 | #include "machine/cpu.h" | |
7530c2f0 | 81 | #include "i386/isa/isa.h" |
15637ed4 | 82 | #include "i386/isa/isa_device.h" |
15637ed4 RG |
83 | #include "i386/isa/wdreg.h" |
84 | #include "syslog.h" | |
85 | #include "vm/vm.h" | |
86 | ||
e0c9a25d | 87 | #define TIMEOUT 10000 /* XXX? WDCC_DIAGNOSE can take > 1.1 sec */ |
15637ed4 RG |
88 | |
89 | #define RETRIES 5 /* number of retries before giving up */ | |
6d2dcc99 | 90 | #define RECOVERYTIME 500000 /* usec for controller to recover after err */ |
80d17733 | 91 | #define MAXTRANSFER 256 /* max size of transfer in sectors */ |
15637ed4 | 92 | |
80d17733 | 93 | #ifdef notyet |
15637ed4 | 94 | #define wdnoreloc(dev) (minor(dev) & 0x80) /* ignore partition table */ |
80d17733 | 95 | #endif |
15637ed4 RG |
96 | #define wddospart(dev) (minor(dev) & 0x40) /* use dos partitions */ |
97 | #define wdunit(dev) ((minor(dev) & 0x38) >> 3) | |
98 | #define wdpart(dev) (minor(dev) & 0x7) | |
99 | #define makewddev(maj, unit, part) (makedev(maj,((unit<<3)+part))) | |
100 | #define WDRAW 3 /* 'd' partition isn't a partition! */ | |
101 | ||
80d17733 NW |
102 | /* Cylinder number for doing IO to. Shares an entry in the buf struct. */ |
103 | #define b_cylin b_resid | |
15637ed4 | 104 | |
80d17733 NW |
105 | /* |
106 | * This biotab field doubles as a field for the physical unit number on | |
107 | * the controller. | |
108 | */ | |
109 | #define id_physid id_scsiid | |
6d2dcc99 | 110 | |
15637ed4 RG |
111 | /* |
112 | * Drive states. Used to initialize drive. | |
113 | */ | |
114 | ||
80d17733 NW |
115 | #define CLOSED 0 /* disk is closed. */ |
116 | #define WANTOPEN 1 /* open requested, not started */ | |
117 | #define RECAL 2 /* doing restore */ | |
118 | #define OPEN 3 /* done with open */ | |
15637ed4 RG |
119 | |
120 | /* | |
121 | * The structure of a disk drive. | |
122 | */ | |
80d17733 | 123 | struct disk { |
15637ed4 RG |
124 | long dk_bc; /* byte count left */ |
125 | short dk_skip; /* blocks already transferred */ | |
6d2dcc99 | 126 | char dk_ctrlr; /* physical controller number */ |
15637ed4 | 127 | char dk_unit; /* physical unit number */ |
6d2dcc99 | 128 | char dk_lunit; /* logical unit number */ |
15637ed4 RG |
129 | char dk_state; /* control state */ |
130 | u_char dk_status; /* copy of status reg. */ | |
131 | u_char dk_error; /* copy of error reg. */ | |
80d17733 | 132 | u_char dk_timeout; /* countdown to next timeout */ |
15637ed4 | 133 | short dk_port; /* i/o port base */ |
6d2dcc99 | 134 | |
80d17733 NW |
135 | u_long dk_copenpart; /* character units open on this drive */ |
136 | u_long dk_bopenpart; /* block units open on this drive */ | |
137 | u_long dk_openpart; /* all units open on this drive */ | |
15637ed4 RG |
138 | short dk_wlabel; /* label writable? */ |
139 | short dk_flags; /* drive characteistics found */ | |
80d17733 NW |
140 | #define DKFL_DOSPART 0x00001 /* has DOS partition table */ |
141 | #define DKFL_SINGLE 0x00004 /* sector at a time mode */ | |
142 | #define DKFL_ERROR 0x00008 /* processing a disk error */ | |
143 | #define DKFL_BSDLABEL 0x00010 /* has a BSD disk label */ | |
144 | #define DKFL_BADSECT 0x00020 /* has a bad144 badsector table */ | |
145 | #define DKFL_WRITEPROT 0x00040 /* manual unit write protect */ | |
146 | #define DKFL_LABELLING 0x00080 /* readdisklabel() in progress */ | |
15637ed4 RG |
147 | struct wdparams dk_params; /* ESDI/IDE drive/controller parameters */ |
148 | struct disklabel dk_dd; /* device configuration data */ | |
80d17733 NW |
149 | struct disklabel dk_dd2; /* DOS view converted to label */ |
150 | struct dos_partition | |
15637ed4 | 151 | dk_dospartitions[NDOSPART]; /* DOS view of disk */ |
80d17733 | 152 | struct dkbad dk_bad; /* bad sector table */ |
15637ed4 RG |
153 | }; |
154 | ||
80d17733 NW |
155 | static struct disk *wddrives[NWD]; /* table of units */ |
156 | static struct buf wdtab[NWDC]; | |
157 | static struct buf wdutab[NWD]; /* head of queue per drive */ | |
6d2dcc99 | 158 | #ifdef notyet |
80d17733 | 159 | static struct buf rwdbuf[NWD]; /* buffers for raw IO */ |
15637ed4 | 160 | #endif |
80d17733 NW |
161 | static long wdxfer[NWD]; /* count of transfers */ |
162 | ||
163 | static int wdprobe(struct isa_device *dvp); | |
164 | static int wdattach(struct isa_device *dvp); | |
165 | static void wdustart(struct disk *du); | |
166 | static void wdstart(int ctrlr); | |
167 | static int wdcontrol(struct buf *bp); | |
168 | static int wdcommand(struct disk *du, u_int cylinder, u_int head, | |
169 | u_int sector, u_int count, u_int command); | |
170 | static int wdsetctlr(struct disk *du); | |
171 | static int wdwsetctlr(struct disk *du); | |
172 | static int wdgetctlr(struct disk *du); | |
173 | static void wderror(struct buf *bp, struct disk *du, char *mesg); | |
174 | static void wdflushirq(struct disk *du, int old_ipl); | |
175 | static int wdreset(struct disk *du); | |
176 | static void wdsleep(int ctrlr, char *wmesg); | |
19fd9fc6 | 177 | static void wdtimeout(caddr_t cdu, int ticks); |
80d17733 | 178 | static int wdunwedge(struct disk *du); |
e0c9a25d | 179 | static int wdwait(struct disk *du, u_char bits_wanted, int timeout); |
80d17733 NW |
180 | |
181 | struct isa_driver wdcdriver = { | |
6d2dcc99 | 182 | wdprobe, wdattach, "wdc", |
15637ed4 RG |
183 | }; |
184 | ||
15637ed4 RG |
185 | /* |
186 | * Probe for controller. | |
187 | */ | |
6d2dcc99 | 188 | static int |
15637ed4 RG |
189 | wdprobe(struct isa_device *dvp) |
190 | { | |
80d17733 | 191 | int unit = dvp->id_unit; |
15637ed4 | 192 | struct disk *du; |
15637ed4 | 193 | |
80d17733 NW |
194 | if (unit >= NWDC) |
195 | return (0); | |
196 | du = malloc(sizeof *du, M_TEMP, M_NOWAIT); | |
197 | if (du == NULL) | |
198 | return (0); | |
199 | bzero(du, sizeof *du); | |
6d2dcc99 | 200 | du->dk_ctrlr = dvp->id_unit; |
80d17733 | 201 | du->dk_port = dvp->id_iobase; |
6d2dcc99 | 202 | |
15637ed4 | 203 | /* check if we have registers that work */ |
80d17733 NW |
204 | outb(du->dk_port + wd_cyl_lo, 0xa5); /* wd_cyl_lo is read/write */ |
205 | if (inb(du->dk_port + wd_cyl_lo) != 0xa5) | |
15637ed4 RG |
206 | goto nodevice; |
207 | ||
6d2dcc99 NW |
208 | if (wdreset(du) != 0 && (DELAY(RECOVERYTIME), wdreset(du)) != 0) |
209 | goto nodevice; | |
15637ed4 RG |
210 | |
211 | /* execute a controller only command */ | |
6d2dcc99 | 212 | if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) != 0 |
e0c9a25d | 213 | || wdwait(du, 0, TIMEOUT) != 0) |
15637ed4 RG |
214 | goto nodevice; |
215 | ||
6d2dcc99 | 216 | free(du, M_TEMP); |
7530c2f0 | 217 | return (IO_WDCSIZE); |
15637ed4 RG |
218 | |
219 | nodevice: | |
220 | free(du, M_TEMP); | |
15637ed4 RG |
221 | return (0); |
222 | } | |
223 | ||
224 | /* | |
225 | * Attach each drive if possible. | |
226 | */ | |
6d2dcc99 | 227 | static int |
15637ed4 RG |
228 | wdattach(struct isa_device *dvp) |
229 | { | |
80d17733 | 230 | int unit, lunit; |
6d2dcc99 NW |
231 | struct isa_device *wdup; |
232 | struct disk *du; | |
233 | ||
234 | if (dvp->id_unit >= NWDC) | |
80d17733 | 235 | return (0); |
6d2dcc99 NW |
236 | |
237 | for (wdup = isa_biotab_wdc; wdup->id_driver != 0; wdup++) { | |
238 | if (wdup->id_iobase != dvp->id_iobase) | |
239 | continue; | |
240 | lunit = wdup->id_unit; | |
241 | if (lunit >= NWD) | |
242 | continue; | |
243 | unit = wdup->id_physid; | |
244 | ||
80d17733 NW |
245 | du = malloc(sizeof *du, M_TEMP, M_NOWAIT); |
246 | if (du == NULL) | |
247 | continue; | |
248 | if (wddrives[lunit] != NULL) | |
249 | panic("drive attached twice"); | |
250 | wddrives[lunit] = du; | |
251 | bzero(du, sizeof *du); | |
6d2dcc99 NW |
252 | du->dk_ctrlr = dvp->id_unit; |
253 | du->dk_unit = unit; | |
254 | du->dk_lunit = lunit; | |
255 | du->dk_port = dvp->id_iobase; | |
15637ed4 | 256 | |
80d17733 | 257 | /* |
eb30d5d6 | 258 | * Print out description of drive. |
bab447b1 | 259 | * wdp_model can be [0..40] bytes, thus \0 can be missing so |
e816cd8c | 260 | * so copy it and add a null before printing. |
80d17733 NW |
261 | */ |
262 | if (wdgetctlr(du) == 0) { | |
e816cd8c RG |
263 | char buf[sizeof(du->dk_params.wdp_model) + 1]; |
264 | bcopy(du->dk_params.wdp_model, buf, sizeof(buf)-1); | |
265 | buf[sizeof(buf)-1] = '\0'; | |
266 | printf("wdc%d: unit %d (wd%d): <%s>\n", | |
267 | dvp->id_unit, unit, lunit, buf); | |
eb30d5d6 RG |
268 | if (du->dk_params.wdp_heads == 0) |
269 | printf("wd%d: size unknown\n", lunit); | |
270 | else | |
271 | printf("wd%d: %luMB (%lu total sec), ", | |
272 | lunit, | |
273 | du->dk_dd.d_secperunit | |
274 | * du->dk_dd.d_secsize / (1024 * 1024), | |
275 | du->dk_dd.d_secperunit); | |
276 | printf("%lu cyl, %lu head, %lu sec, bytes/sec %lu\n", | |
277 | du->dk_dd.d_ncylinders, | |
278 | du->dk_dd.d_ntracks, | |
279 | du->dk_dd.d_nsectors, | |
280 | du->dk_dd.d_secsize); | |
80d17733 NW |
281 | /* |
282 | * Start timeout routine for this drive. | |
283 | * XXX timeout should be per controller. | |
284 | */ | |
285 | wdtimeout((caddr_t)du, 0); | |
286 | } else { | |
6d2dcc99 | 287 | free(du, M_TEMP); |
80d17733 | 288 | wddrives[lunit] = NULL; |
15637ed4 RG |
289 | } |
290 | } | |
80d17733 NW |
291 | |
292 | /* | |
293 | * Discard any interrupts generated by wdgetctlr(). wdflushirq() | |
294 | * doesn't work now because the ambient ipl is too high. | |
295 | */ | |
296 | wdtab[dvp->id_unit].b_active = 2; | |
297 | ||
298 | return (1); | |
15637ed4 RG |
299 | } |
300 | ||
301 | /* Read/write routine for a buffer. Finds the proper unit, range checks | |
302 | * arguments, and schedules the transfer. Does not wait for the transfer | |
303 | * to complete. Multi-page transfers are supported. All I/O requests must | |
304 | * be a multiple of a sector in length. | |
305 | */ | |
4c45483e | 306 | void |
15637ed4 RG |
307 | wdstrategy(register struct buf *bp) |
308 | { | |
309 | register struct buf *dp; | |
80d17733 | 310 | struct disk *du; |
6d2dcc99 | 311 | int lunit = wdunit(bp->b_dev); |
15637ed4 RG |
312 | int s; |
313 | ||
314 | /* valid unit, controller, and request? */ | |
80d17733 | 315 | if (lunit >= NWD || bp->b_blkno < 0 || (du = wddrives[lunit]) == NULL) { |
15637ed4 RG |
316 | |
317 | bp->b_error = EINVAL; | |
318 | bp->b_flags |= B_ERROR; | |
319 | goto done; | |
320 | } | |
321 | ||
322 | /* "soft" write protect check */ | |
323 | if ((du->dk_flags & DKFL_WRITEPROT) && (bp->b_flags & B_READ) == 0) { | |
324 | bp->b_error = EROFS; | |
325 | bp->b_flags |= B_ERROR; | |
326 | goto done; | |
327 | } | |
328 | ||
80d17733 NW |
329 | /* |
330 | * Do bounds checking, adjust transfer, and set b_cylin. | |
331 | */ | |
332 | if (bounds_check_with_label(bp, wddospart(bp->b_dev) | |
333 | ? &du->dk_dd2 : &du->dk_dd, | |
334 | du->dk_wlabel) <= 0) | |
335 | goto done; | |
15637ed4 | 336 | |
15637ed4 | 337 | /* queue transfer on drive, activate drive and controller if idle */ |
6d2dcc99 | 338 | dp = &wdutab[lunit]; |
15637ed4 RG |
339 | s = splbio(); |
340 | disksort(dp, bp); | |
341 | if (dp->b_active == 0) | |
80d17733 | 342 | wdustart(du); /* start drive */ |
6d2dcc99 NW |
343 | |
344 | /* Pick up changes made by readdisklabel(). */ | |
345 | if (du->dk_flags & DKFL_LABELLING && du->dk_state > RECAL) { | |
346 | wdsleep(du->dk_ctrlr, "wdlab"); | |
347 | du->dk_state = WANTOPEN; | |
348 | } | |
349 | ||
350 | if (wdtab[du->dk_ctrlr].b_active == 0) | |
80d17733 | 351 | wdstart(du->dk_ctrlr); /* start controller */ |
15637ed4 RG |
352 | splx(s); |
353 | return; | |
354 | ||
355 | done: | |
356 | /* toss transfer, we're done early */ | |
357 | biodone(bp); | |
358 | } | |
359 | ||
360 | /* | |
361 | * Routine to queue a command to the controller. The unit's | |
362 | * request is linked into the active list for the controller. | |
363 | * If the controller is idle, the transfer is started. | |
364 | */ | |
365 | static void | |
366 | wdustart(register struct disk *du) | |
367 | { | |
6d2dcc99 | 368 | register struct buf *bp, *dp = &wdutab[du->dk_lunit]; |
80d17733 | 369 | int ctrlr = du->dk_ctrlr; |
15637ed4 RG |
370 | |
371 | /* unit already active? */ | |
372 | if (dp->b_active) | |
373 | return; | |
374 | ||
375 | /* anything to start? */ | |
376 | bp = dp->b_actf; | |
377 | if (bp == NULL) | |
6d2dcc99 | 378 | return; |
15637ed4 RG |
379 | |
380 | /* link onto controller queue */ | |
381 | dp->b_forw = NULL; | |
80d17733 | 382 | if (wdtab[ctrlr].b_actf == NULL) |
6d2dcc99 | 383 | wdtab[ctrlr].b_actf = dp; |
15637ed4 | 384 | else |
6d2dcc99 NW |
385 | wdtab[ctrlr].b_actl->b_forw = dp; |
386 | wdtab[ctrlr].b_actl = dp; | |
15637ed4 RG |
387 | |
388 | /* mark the drive unit as busy */ | |
389 | dp->b_active = 1; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Controller startup routine. This does the calculation, and starts | |
394 | * a single-sector read or write operation. Called to start a transfer, | |
395 | * or from the interrupt routine to continue a multi-sector transfer. | |
396 | * RESTRICTIONS: | |
6d2dcc99 | 397 | * 1. The transfer length must be an exact multiple of the sector size. |
15637ed4 RG |
398 | */ |
399 | ||
400 | static void | |
6d2dcc99 | 401 | wdstart(int ctrlr) |
15637ed4 | 402 | { |
80d17733 | 403 | register struct disk *du; |
15637ed4 RG |
404 | register struct buf *bp; |
405 | struct disklabel *lp; | |
406 | struct buf *dp; | |
407 | register struct bt_bad *bt_ptr; | |
6d2dcc99 | 408 | long blknum, cylin, head, sector; |
80d17733 NW |
409 | long secpertrk, secpercyl; |
410 | int lunit; | |
15637ed4 RG |
411 | |
412 | loop: | |
413 | /* is there a drive for the controller to do a transfer with? */ | |
6d2dcc99 | 414 | dp = wdtab[ctrlr].b_actf; |
15637ed4 RG |
415 | if (dp == NULL) |
416 | return; | |
417 | ||
80d17733 NW |
418 | /* |
419 | * Is there a transfer to this drive? If so, link it on the | |
420 | * controller's queue. | |
421 | */ | |
15637ed4 RG |
422 | bp = dp->b_actf; |
423 | if (bp == NULL) { | |
6d2dcc99 | 424 | wdtab[ctrlr].b_actf = dp->b_forw; |
15637ed4 RG |
425 | goto loop; |
426 | } | |
427 | ||
428 | /* obtain controller and drive information */ | |
6d2dcc99 NW |
429 | lunit = wdunit(bp->b_dev); |
430 | du = wddrives[lunit]; | |
15637ed4 RG |
431 | |
432 | /* if not really a transfer, do control operations specially */ | |
433 | if (du->dk_state < OPEN) { | |
6d2dcc99 NW |
434 | if (du->dk_state != WANTOPEN) |
435 | printf("wd%d: wdstart: weird dk_state %d\n", | |
80d17733 | 436 | du->dk_lunit, du->dk_state); |
6d2dcc99 NW |
437 | if (wdcontrol(bp) != 0) |
438 | printf("wd%d: wdstart: wdcontrol returned nonzero, state = %d\n", | |
80d17733 | 439 | du->dk_lunit, du->dk_state); |
15637ed4 RG |
440 | return; |
441 | } | |
442 | ||
443 | /* calculate transfer details */ | |
444 | blknum = bp->b_blkno + du->dk_skip; | |
6d2dcc99 | 445 | #ifdef WDDEBUG |
15637ed4 | 446 | if (du->dk_skip == 0) |
6d2dcc99 | 447 | printf("wd%d: wdstart: %s %d@%d; map ", lunit, |
80d17733 NW |
448 | (bp->b_flags & B_READ) ? "read" : "write", |
449 | bp->b_bcount, blknum); | |
15637ed4 | 450 | else |
80d17733 | 451 | printf(" %d)%x", du->dk_skip, inb(du->dk_port + wd_altsts)); |
15637ed4 | 452 | #endif |
15637ed4 RG |
453 | if (du->dk_skip == 0) |
454 | du->dk_bc = bp->b_bcount; | |
455 | ||
456 | lp = &du->dk_dd; | |
457 | secpertrk = lp->d_nsectors; | |
458 | secpercyl = lp->d_secpercyl; | |
80d17733 NW |
459 | if (wddospart(bp->b_dev)) |
460 | blknum += du->dk_dd2.d_partitions[wdpart(bp->b_dev)].p_offset; | |
461 | else | |
15637ed4 RG |
462 | blknum += lp->d_partitions[wdpart(bp->b_dev)].p_offset; |
463 | cylin = blknum / secpercyl; | |
464 | head = (blknum % secpercyl) / secpertrk; | |
465 | sector = blknum % secpertrk; | |
466 | ||
467 | /* | |
468 | * See if the current block is in the bad block list. | |
469 | * (If we have one, and not formatting.) | |
470 | */ | |
80d17733 NW |
471 | if ((du->dk_flags & (DKFL_SINGLE | DKFL_BADSECT)) |
472 | == (DKFL_SINGLE | DKFL_BADSECT)) | |
473 | #define BAD144_NO_CYL 0xffff /* XXX should be in dkbad.h; bad144.c uses -1 */ | |
474 | for (bt_ptr = du->dk_bad.bt_bad; bt_ptr->bt_cyl != BAD144_NO_CYL; | |
6d2dcc99 | 475 | bt_ptr++) { |
15637ed4 RG |
476 | if (bt_ptr->bt_cyl > cylin) |
477 | /* Sorted list, and we passed our cylinder. quit. */ | |
478 | break; | |
479 | if (bt_ptr->bt_cyl == cylin && | |
6d2dcc99 | 480 | bt_ptr->bt_trksec == (head << 8) + sector) { |
15637ed4 | 481 | /* |
80d17733 | 482 | * Found bad block. Calculate new block number. |
15637ed4 RG |
483 | * This starts at the end of the disk (skip the |
484 | * last track which is used for the bad block list), | |
485 | * and works backwards to the front of the disk. | |
486 | */ | |
80d17733 NW |
487 | #ifdef WDDEBUG |
488 | printf("--- badblock code -> Old = %ld; ", blknum); | |
15637ed4 | 489 | #endif |
6d2dcc99 NW |
490 | |
491 | /* | |
492 | * XXX the offset of the bad sector table ought | |
493 | * to be stored in the in-core copy of the table. | |
494 | */ | |
495 | #define BAD144_PART 2 /* XXX scattered magic numbers */ | |
496 | #define BSD_PART 0 /* XXX should be 2 but bad144.c uses 0 */ | |
497 | if (lp->d_partitions[BSD_PART].p_offset != 0) | |
498 | blknum = lp->d_partitions[BAD144_PART].p_offset | |
499 | + lp->d_partitions[BAD144_PART].p_size; | |
500 | else | |
501 | blknum = lp->d_secperunit; | |
502 | blknum -= lp->d_nsectors + (bt_ptr - du->dk_bad.bt_bad) | |
503 | + 1; | |
504 | ||
15637ed4 RG |
505 | cylin = blknum / secpercyl; |
506 | head = (blknum % secpercyl) / secpertrk; | |
507 | sector = blknum % secpertrk; | |
80d17733 NW |
508 | #ifdef WDDEBUG |
509 | printf("new = %ld\n", blknum); | |
15637ed4 RG |
510 | #endif |
511 | break; | |
512 | } | |
513 | } | |
15637ed4 | 514 | |
80d17733 | 515 | wdtab[ctrlr].b_active = 1; /* mark controller active */ |
15637ed4 | 516 | |
15637ed4 RG |
517 | /* if starting a multisector transfer, or doing single transfers */ |
518 | if (du->dk_skip == 0 || (du->dk_flags & DKFL_SINGLE)) { | |
80d17733 NW |
519 | u_int command; |
520 | u_int count; | |
15637ed4 | 521 | |
6d2dcc99 NW |
522 | if (wdtab[ctrlr].b_errcnt && (bp->b_flags & B_READ) == 0) |
523 | du->dk_bc += DEV_BSIZE; | |
90af2aa0 | 524 | |
80d17733 | 525 | #ifdef B_FORMAT |
15637ed4 | 526 | if (bp->b_flags & B_FORMAT) { |
6d2dcc99 NW |
527 | command = WDCC_FORMAT; |
528 | count = lp->d_nsectors; | |
529 | sector = lp->d_gap3 - 1; /* + 1 later */ | |
530 | } else | |
15637ed4 | 531 | #endif |
6d2dcc99 | 532 | { |
80d17733 NW |
533 | if (du->dk_flags & DKFL_SINGLE) |
534 | count = 1; | |
535 | else | |
536 | count = howmany(du->dk_bc, DEV_BSIZE); | |
537 | command = (bp->b_flags & B_READ) | |
538 | ? WDCC_READ : WDCC_WRITE; | |
15637ed4 | 539 | } |
90af2aa0 | 540 | |
6d2dcc99 NW |
541 | /* |
542 | * XXX this loop may never terminate. The code to handle | |
80d17733 NW |
543 | * counting down of retries and eventually failing the i/o |
544 | * is in wdintr() and we can't get there from here. | |
6d2dcc99 NW |
545 | */ |
546 | if (wdtest != 0) { | |
547 | if (--wdtest == 0) { | |
548 | wdtest = 100; | |
549 | printf("dummy wdunwedge\n"); | |
550 | wdunwedge(du); | |
551 | } | |
552 | } | |
80d17733 NW |
553 | while (wdcommand(du, cylin, head, sector, count, command) |
554 | != 0) { | |
6d2dcc99 | 555 | wderror(bp, du, |
80d17733 | 556 | "wdstart: timeout waiting to give command"); |
6d2dcc99 | 557 | wdunwedge(du); |
4035d7c4 | 558 | } |
80d17733 NW |
559 | #ifdef WDDEBUG |
560 | printf("cylin %ld head %ld sector %ld addr %x sts %x\n", | |
561 | cylin, head, sector, | |
562 | (int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, | |
563 | inb(du->dk_port + wd_altsts)); | |
15637ed4 RG |
564 | #endif |
565 | } | |
566 | ||
80d17733 NW |
567 | /* |
568 | * Schedule wdtimeout() to wake up after a few seconds. Retrying | |
569 | * unmarked bad blocks can take 3 seconds! Then it is not good that | |
570 | * we retry 5 times. | |
571 | * | |
572 | * XXX wdtimeout() doesn't increment the error count so we may loop | |
573 | * forever. More seriously, the loop isn't forever but causes a | |
574 | * crash. | |
575 | * | |
576 | * TODO fix b_resid bug elsewhere (fd.c....). Fix short but positive | |
577 | * counts being discarded after there is an error (in physio I | |
578 | * think). Discarding them would be OK if the (special) file offset | |
579 | * was not advanced. | |
580 | */ | |
581 | du->dk_timeout = 1 + 1; | |
582 | ||
583 | /* If this is a read operation, just go away until it's done. */ | |
584 | if (bp->b_flags & B_READ) | |
585 | return; | |
15637ed4 | 586 | |
80d17733 | 587 | /* Ready to send data? */ |
e0c9a25d | 588 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) < 0) { |
6d2dcc99 NW |
589 | wderror(bp, du, "wdstart: timeout waiting for DRQ"); |
590 | /* | |
591 | * XXX what do we do now? If we've just issued the command, | |
592 | * then we can treat this failure the same as a command | |
593 | * failure. But if we are continuing a multi-sector write, | |
594 | * the command was issued ages ago, so we can't simply | |
595 | * restart it. | |
596 | * | |
80d17733 NW |
597 | * XXX we waste a lot of time unnecessarily translating block |
598 | * numbers to cylin/head/sector for continued i/o's. | |
6d2dcc99 | 599 | */ |
15637ed4 RG |
600 | } |
601 | ||
602 | /* then send it! */ | |
80d17733 | 603 | outsw(du->dk_port + wd_data, |
19fd9fc6 | 604 | (void *)((int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE), |
80d17733 | 605 | DEV_BSIZE / sizeof(short)); |
15637ed4 RG |
606 | du->dk_bc -= DEV_BSIZE; |
607 | } | |
608 | ||
609 | /* Interrupt routine for the controller. Acknowledge the interrupt, check for | |
610 | * errors on the current operation, mark it done if necessary, and start | |
611 | * the next request. Also check for a partially done transfer, and | |
612 | * continue with the next chunk if so. | |
613 | */ | |
614 | void | |
6d2dcc99 | 615 | wdintr(int unit) |
15637ed4 RG |
616 | { |
617 | register struct disk *du; | |
618 | register struct buf *bp, *dp; | |
15637ed4 | 619 | |
80d17733 NW |
620 | if (wdtab[unit].b_active == 2) |
621 | return; /* intr in wdflushirq() */ | |
6d2dcc99 NW |
622 | if (!wdtab[unit].b_active) { |
623 | printf("wdc%d: extra interrupt\n", unit); | |
15637ed4 RG |
624 | return; |
625 | } | |
626 | ||
6d2dcc99 | 627 | dp = wdtab[unit].b_actf; |
15637ed4 RG |
628 | bp = dp->b_actf; |
629 | du = wddrives[wdunit(bp->b_dev)]; | |
80d17733 | 630 | du->dk_timeout = 0; |
15637ed4 | 631 | |
e0c9a25d | 632 | if (wdwait(du, 0, TIMEOUT) < 0) { |
6d2dcc99 NW |
633 | wderror(bp, du, "wdintr: timeout waiting for status"); |
634 | du->dk_status |= WDCS_ERR; /* XXX */ | |
635 | } | |
15637ed4 RG |
636 | |
637 | /* is it not a transfer, but a control operation? */ | |
638 | if (du->dk_state < OPEN) { | |
6d2dcc99 | 639 | wdtab[unit].b_active = 0; |
15637ed4 | 640 | if (wdcontrol(bp)) |
6d2dcc99 | 641 | wdstart(unit); |
15637ed4 RG |
642 | return; |
643 | } | |
644 | ||
645 | /* have we an error? */ | |
6d2dcc99 NW |
646 | if (du->dk_status & (WDCS_ERR | WDCS_ECCCOR)) { |
647 | oops: | |
80d17733 | 648 | #ifdef WDDEBUG |
6d2dcc99 | 649 | wderror(bp, du, "wdintr"); |
15637ed4 | 650 | #endif |
80d17733 NW |
651 | if ((du->dk_flags & DKFL_SINGLE) == 0) { |
652 | du->dk_flags |= DKFL_ERROR; | |
15637ed4 RG |
653 | goto outt; |
654 | } | |
655 | #ifdef B_FORMAT | |
656 | if (bp->b_flags & B_FORMAT) { | |
80d17733 | 657 | bp->b_error = EIO; |
15637ed4 RG |
658 | bp->b_flags |= B_ERROR; |
659 | goto done; | |
660 | } | |
661 | #endif | |
6d2dcc99 | 662 | |
15637ed4 | 663 | /* error or error correction? */ |
6d2dcc99 NW |
664 | if (du->dk_status & WDCS_ERR) { |
665 | if (++wdtab[unit].b_errcnt < RETRIES) { | |
666 | wdtab[unit].b_active = 0; | |
15637ed4 | 667 | } else { |
6d2dcc99 | 668 | wderror(bp, du, "hard error"); |
80d17733 | 669 | bp->b_error = EIO; |
15637ed4 RG |
670 | bp->b_flags |= B_ERROR; /* flag the error */ |
671 | } | |
6d2dcc99 NW |
672 | } else |
673 | wderror(bp, du, "soft ecc"); | |
15637ed4 | 674 | } |
15637ed4 RG |
675 | |
676 | /* | |
677 | * If this was a successful read operation, fetch the data. | |
678 | */ | |
80d17733 NW |
679 | if (((bp->b_flags & (B_READ | B_ERROR)) == B_READ) |
680 | && wdtab[unit].b_active) { | |
681 | int chk, dummy; | |
15637ed4 RG |
682 | |
683 | chk = min(DEV_BSIZE / sizeof(short), du->dk_bc / sizeof(short)); | |
684 | ||
685 | /* ready to receive data? */ | |
e0c9a25d | 686 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) != 0) { |
6d2dcc99 NW |
687 | wderror(bp, du, "wdintr: read error detected late"); |
688 | goto oops; | |
689 | } | |
15637ed4 RG |
690 | |
691 | /* suck in data */ | |
80d17733 | 692 | insw(du->dk_port + wd_data, |
19fd9fc6 AS |
693 | (void *)((int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE), |
694 | chk); | |
15637ed4 RG |
695 | du->dk_bc -= chk * sizeof(short); |
696 | ||
80d17733 NW |
697 | /* XXX for obsolete fractional sector reads. */ |
698 | while (chk++ < DEV_BSIZE / sizeof(short)) | |
699 | insw(du->dk_port + wd_data, &dummy, 1); | |
15637ed4 RG |
700 | } |
701 | ||
6d2dcc99 NW |
702 | wdxfer[du->dk_lunit]++; |
703 | outt: | |
704 | if (wdtab[unit].b_active) { | |
15637ed4 | 705 | if ((bp->b_flags & B_ERROR) == 0) { |
80d17733 | 706 | du->dk_skip++; /* add to successful sectors */ |
6d2dcc99 NW |
707 | if (wdtab[unit].b_errcnt) |
708 | wderror(bp, du, "soft error"); | |
709 | wdtab[unit].b_errcnt = 0; | |
15637ed4 RG |
710 | |
711 | /* see if more to transfer */ | |
712 | if (du->dk_bc > 0 && (du->dk_flags & DKFL_ERROR) == 0) { | |
6d2dcc99 NW |
713 | wdtab[unit].b_active = 0; |
714 | wdstart(unit); | |
80d17733 NW |
715 | return; /* next chunk is started */ |
716 | } else if ((du->dk_flags & (DKFL_SINGLE | DKFL_ERROR)) | |
717 | == DKFL_ERROR) { | |
15637ed4 RG |
718 | du->dk_skip = 0; |
719 | du->dk_flags &= ~DKFL_ERROR; | |
80d17733 | 720 | du->dk_flags |= DKFL_SINGLE; |
6d2dcc99 NW |
721 | wdtab[unit].b_active = 0; |
722 | wdstart(unit); | |
80d17733 | 723 | return; /* redo xfer sector by sector */ |
15637ed4 RG |
724 | } |
725 | } | |
6d2dcc99 NW |
726 | #ifdef B_FORMAT |
727 | done: ; | |
728 | #endif | |
15637ed4 RG |
729 | /* done with this transfer, with or without error */ |
730 | du->dk_flags &= ~DKFL_SINGLE; | |
6d2dcc99 NW |
731 | wdtab[unit].b_actf = dp->b_forw; |
732 | wdtab[unit].b_errcnt = 0; | |
80d17733 | 733 | bp->b_resid = bp->b_bcount - du->dk_skip * DEV_BSIZE; |
15637ed4 RG |
734 | du->dk_skip = 0; |
735 | dp->b_active = 0; | |
736 | dp->b_actf = bp->av_forw; | |
737 | dp->b_errcnt = 0; | |
15637ed4 RG |
738 | biodone(bp); |
739 | } | |
740 | ||
741 | /* controller idle */ | |
6d2dcc99 | 742 | wdtab[unit].b_active = 0; |
15637ed4 RG |
743 | |
744 | /* anything more on drive queue? */ | |
745 | if (dp->b_actf) | |
746 | wdustart(du); | |
747 | /* anything more for controller to do? */ | |
6d2dcc99 NW |
748 | if (wdtab[unit].b_actf) |
749 | wdstart(unit); | |
15637ed4 RG |
750 | } |
751 | ||
752 | /* | |
753 | * Initialize a drive. | |
754 | */ | |
755 | int | |
756 | wdopen(dev_t dev, int flags, int fmt, struct proc *p) | |
757 | { | |
6d2dcc99 | 758 | register unsigned int lunit; |
15637ed4 | 759 | register struct disk *du; |
80d17733 | 760 | int part = wdpart(dev), mask = 1 << part; |
6d2dcc99 | 761 | struct partition *pp; |
80d17733 | 762 | char *msg; |
6d2dcc99 | 763 | struct disklabel save_label; |
15637ed4 | 764 | |
6d2dcc99 | 765 | lunit = wdunit(dev); |
80d17733 NW |
766 | if (lunit >= NWD) |
767 | return (ENXIO); | |
6d2dcc99 | 768 | du = wddrives[lunit]; |
80d17733 NW |
769 | if (du == NULL) |
770 | return (ENXIO); | |
771 | ||
772 | /* Finish flushing IRQs left over from wdattach(). */ | |
773 | if (wdtab[du->dk_ctrlr].b_active == 2) | |
774 | wdtab[du->dk_ctrlr].b_active = 0; | |
775 | ||
776 | /* | |
777 | * That's all for valid DOS partitions. We don't need a BSD label. | |
778 | * The openmask is only used for checking BSD partitions so we don't | |
779 | * need to maintain it. | |
780 | */ | |
781 | if (wddospart(dev)) { | |
782 | /* XXX we do need a disklabel for now. */ | |
783 | if ((du->dk_flags & DKFL_BSDLABEL) == 0) | |
784 | return (ENXIO); | |
785 | ||
786 | return (part > NDOSPART ? ENXIO : 0); | |
787 | } | |
15637ed4 | 788 | |
6d2dcc99 NW |
789 | while (du->dk_flags & DKFL_LABELLING) |
790 | tsleep((caddr_t)&du->dk_flags, PZERO - 1, "wdopen", 1); | |
15637ed4 | 791 | if ((du->dk_flags & DKFL_BSDLABEL) == 0) { |
4035d7c4 | 792 | /* |
80d17733 NW |
793 | * wdtab[ctrlr].b_active != 0 implies |
794 | * wdutab[lunit].b_actf == NULL (?) | |
6d2dcc99 NW |
795 | * so the following guards most things (until the next i/o). |
796 | * It doesn't guard against a new i/o starting and being | |
797 | * affected by the label being changed. Sigh. | |
4035d7c4 | 798 | */ |
6d2dcc99 NW |
799 | wdsleep(du->dk_ctrlr, "wdopn1"); |
800 | ||
801 | du->dk_flags |= DKFL_LABELLING | DKFL_WRITEPROT; | |
90af2aa0 | 802 | du->dk_state = WANTOPEN; |
6d2dcc99 | 803 | wdutab[lunit].b_actf = NULL; |
90af2aa0 | 804 | |
6d2dcc99 NW |
805 | /* |
806 | * Read label using WDRAW partition. | |
807 | * | |
808 | * If the drive has an MBR, then the current geometry (from | |
809 | * wdgetctlr()) is used to read it; then the BIOS/DOS | |
810 | * geometry is inferred and used to read the label off the | |
811 | * 'c' partition. Otherwise the label is read using the | |
812 | * current geometry. The label gives the final geometry. | |
813 | * If bad sector handling is enabled, then this geometry | |
814 | * is used to read the bad sector table. The geometry | |
815 | * changes occur inside readdisklabel() and are propagated | |
816 | * to the driver by resetting the state machine. | |
817 | */ | |
818 | save_label = du->dk_dd; | |
80d17733 | 819 | #define WDSTRATEGY ((int (*)(struct buf *)) wdstrategy) /* XXX */ |
6d2dcc99 | 820 | msg = readdisklabel(makewddev(major(dev), lunit, WDRAW), |
19fd9fc6 | 821 | (d_strategy_t *) WDSTRATEGY, &du->dk_dd, |
6d2dcc99 NW |
822 | du->dk_dospartitions, &du->dk_bad, |
823 | (struct buf **)NULL); | |
824 | du->dk_flags &= ~DKFL_LABELLING; | |
825 | if (msg != NULL) { | |
826 | du->dk_dd = save_label; | |
3419be7d | 827 | log(LOG_WARNING, "wd%d: cannot find label (%s)\n", |
6d2dcc99 | 828 | lunit, msg); |
3419be7d | 829 | if (part != WDRAW) |
6d2dcc99 | 830 | return (EINVAL); /* XXX needs translation */ |
15637ed4 | 831 | } else { |
80d17733 NW |
832 | int dospart; |
833 | unsigned long newsize, offset, size; | |
834 | ||
15637ed4 RG |
835 | du->dk_flags |= DKFL_BSDLABEL; |
836 | du->dk_flags &= ~DKFL_WRITEPROT; | |
837 | if (du->dk_dd.d_flags & D_BADSECT) | |
838 | du->dk_flags |= DKFL_BADSECT; | |
80d17733 NW |
839 | |
840 | /* | |
841 | * Force WDRAW partition to be the whole disk. | |
842 | */ | |
843 | offset = du->dk_dd.d_partitions[WDRAW].p_offset; | |
844 | if (offset != 0) { | |
845 | printf( | |
846 | "wd%d: changing offset of 'd' partition from %lu to 0\n", | |
847 | du->dk_lunit, offset); | |
848 | du->dk_dd.d_partitions[WDRAW].p_offset = 0; | |
849 | } | |
850 | size = du->dk_dd.d_partitions[WDRAW].p_size; | |
851 | newsize = du->dk_dd.d_secperunit; /* XXX */ | |
852 | if (size != newsize) { | |
853 | printf( | |
854 | "wd%d: changing size of 'd' partition from %lu to %lu\n", | |
855 | du->dk_lunit, size, newsize); | |
856 | du->dk_dd.d_partitions[WDRAW].p_size = newsize; | |
857 | } | |
858 | ||
859 | /* | |
860 | * Convert DOS partition data to a label. | |
861 | */ | |
862 | du->dk_dd2 = du->dk_dd; | |
863 | bzero(du->dk_dd2.d_partitions, | |
864 | sizeof du->dk_dd2.d_partitions); | |
865 | du->dk_dd2.d_partitions[0].p_size | |
866 | = du->dk_dd.d_secperunit; /* XXX */ | |
867 | for (dospart = 1; dospart <= NDOSPART; dospart++) { | |
868 | du->dk_dd2.d_partitions[dospart].p_offset = | |
869 | du->dk_dospartitions[dospart - 1].dp_start; | |
870 | du->dk_dd2.d_partitions[dospart].p_size = | |
871 | du->dk_dospartitions[dospart - 1].dp_size; | |
872 | } | |
15637ed4 RG |
873 | } |
874 | ||
6d2dcc99 NW |
875 | /* Pick up changes made by readdisklabel(). */ |
876 | wdsleep(du->dk_ctrlr, "wdopn2"); | |
877 | du->dk_state = WANTOPEN; | |
90af2aa0 | 878 | } |
6d2dcc99 NW |
879 | |
880 | /* | |
80d17733 NW |
881 | * Warn if a partion is opened that overlaps another partition which |
882 | * is open unless one is the "raw" partition (whole disk). | |
6d2dcc99 | 883 | */ |
80d17733 | 884 | if ((du->dk_openpart & mask) == 0 && part != WDRAW) { |
15637ed4 RG |
885 | int start, end; |
886 | ||
6d2dcc99 NW |
887 | pp = &du->dk_dd.d_partitions[part]; |
888 | start = pp->p_offset; | |
889 | end = pp->p_offset + pp->p_size; | |
890 | for (pp = du->dk_dd.d_partitions; | |
891 | pp < &du->dk_dd.d_partitions[du->dk_dd.d_npartitions]; | |
892 | pp++) { | |
893 | if (pp->p_offset + pp->p_size <= start || | |
80d17733 | 894 | pp->p_offset >= end) |
6d2dcc99 NW |
895 | continue; |
896 | if (pp - du->dk_dd.d_partitions == WDRAW) | |
897 | continue; | |
80d17733 NW |
898 | if (du->dk_openpart |
899 | & (1 << (pp - du->dk_dd.d_partitions))) | |
6d2dcc99 NW |
900 | log(LOG_WARNING, |
901 | "wd%d%c: overlaps open partition (%c)\n", | |
902 | lunit, part + 'a', | |
903 | pp - du->dk_dd.d_partitions + 'a'); | |
904 | } | |
905 | } | |
906 | if (part >= du->dk_dd.d_npartitions && part != WDRAW) | |
907 | return (ENXIO); | |
15637ed4 | 908 | |
6d2dcc99 NW |
909 | switch (fmt) { |
910 | case S_IFCHR: | |
911 | du->dk_copenpart |= mask; | |
912 | break; | |
913 | case S_IFBLK: | |
914 | du->dk_bopenpart |= mask; | |
915 | break; | |
916 | } | |
80d17733 NW |
917 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
918 | ||
15637ed4 RG |
919 | return (0); |
920 | } | |
921 | ||
922 | /* | |
923 | * Implement operations other than read/write. | |
924 | * Called from wdstart or wdintr during opens and formats. | |
925 | * Uses finite-state-machine to track progress of operation in progress. | |
926 | * Returns 0 if operation still in progress, 1 if completed. | |
927 | */ | |
928 | static int | |
929 | wdcontrol(register struct buf *bp) | |
930 | { | |
931 | register struct disk *du; | |
80d17733 | 932 | int ctrlr; |
15637ed4 RG |
933 | |
934 | du = wddrives[wdunit(bp->b_dev)]; | |
6d2dcc99 | 935 | ctrlr = du->dk_ctrlr; |
90af2aa0 | 936 | |
6d2dcc99 | 937 | switch (du->dk_state) { |
80d17733 | 938 | case WANTOPEN: |
6d2dcc99 NW |
939 | tryagainrecal: |
940 | wdtab[ctrlr].b_active = 1; | |
941 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0) { | |
942 | wderror(bp, du, "wdcontrol: wdcommand failed"); | |
943 | goto maybe_retry; | |
944 | } | |
945 | du->dk_state = RECAL; | |
80d17733 | 946 | return (0); |
15637ed4 | 947 | case RECAL: |
6d2dcc99 NW |
948 | if (du->dk_status & WDCS_ERR || wdsetctlr(du) != 0) { |
949 | wderror(bp, du, "wdcontrol: recal failed"); | |
950 | maybe_retry: | |
951 | if (du->dk_status & WDCS_ERR) | |
952 | wdunwedge(du); | |
80d17733 NW |
953 | du->dk_state = WANTOPEN; |
954 | if (++wdtab[ctrlr].b_errcnt < RETRIES) | |
15637ed4 | 955 | goto tryagainrecal; |
15637ed4 | 956 | bp->b_error = ENXIO; /* XXX needs translation */ |
6d2dcc99 | 957 | bp->b_flags |= B_ERROR; |
80d17733 | 958 | return (1); |
15637ed4 | 959 | } |
6d2dcc99 | 960 | wdtab[ctrlr].b_errcnt = 0; |
15637ed4 RG |
961 | du->dk_state = OPEN; |
962 | /* | |
80d17733 NW |
963 | * The rest of the initialization can be done by normal |
964 | * means. | |
15637ed4 | 965 | */ |
80d17733 | 966 | return (1); |
15637ed4 | 967 | } |
6d2dcc99 NW |
968 | panic("wdcontrol"); |
969 | return (1); | |
15637ed4 RG |
970 | } |
971 | ||
972 | /* | |
6d2dcc99 NW |
973 | * Wait uninterruptibly until controller is not busy, then send it a command. |
974 | * The wait usually terminates immediately because we waited for the previous | |
975 | * command to terminate. | |
15637ed4 RG |
976 | */ |
977 | static int | |
6d2dcc99 NW |
978 | wdcommand(struct disk *du, u_int cylinder, u_int head, u_int sector, |
979 | u_int count, u_int command) | |
58324b60 | 980 | { |
80d17733 | 981 | u_int wdc; |
15637ed4 | 982 | |
e0c9a25d | 983 | if (wdwait(du, 0, TIMEOUT) < 0) |
6d2dcc99 | 984 | return (1); |
15637ed4 | 985 | wdc = du->dk_port; |
6d2dcc99 NW |
986 | outb(wdc + wd_precomp, du->dk_dd.d_precompcyl / 4); |
987 | outb(wdc + wd_cyl_lo, cylinder); | |
988 | outb(wdc + wd_cyl_hi, cylinder >> 8); | |
80d17733 | 989 | outb(wdc + wd_sdh, WDSD_IBM | (du->dk_unit << 4) | head); |
6d2dcc99 NW |
990 | outb(wdc + wd_sector, sector + 1); |
991 | outb(wdc + wd_seccnt, count); | |
80d17733 | 992 | if (wdwait(du, command == WDCC_DIAGNOSE || command == WDCC_IDC |
e0c9a25d | 993 | ? 0 : WDCS_READY, TIMEOUT) < 0) |
80d17733 NW |
994 | return (1); |
995 | outb(wdc + wd_command, command); | |
6d2dcc99 | 996 | return (0); |
15637ed4 RG |
997 | } |
998 | ||
999 | /* | |
1000 | * issue IDC to drive to tell it just what geometry it is to be. | |
1001 | */ | |
1002 | static int | |
6d2dcc99 NW |
1003 | wdsetctlr(struct disk *du) |
1004 | { | |
80d17733 NW |
1005 | #ifdef WDDEBUG |
1006 | printf("wd(%d,%d): wdsetctlr: C %lu H %lu S %lu\n", | |
1007 | du->dk_ctrlr, du->dk_unit, | |
1008 | du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks, | |
1009 | du->dk_dd.d_nsectors); | |
6d2dcc99 | 1010 | #endif |
80d17733 | 1011 | if (du->dk_dd.d_ntracks > 16) { |
eb30d5d6 | 1012 | printf("wd%d: cannot handle %lu heads (truncating to 16)\n", |
80d17733 | 1013 | du->dk_lunit, du->dk_dd.d_ntracks); |
eb30d5d6 | 1014 | du->dk_dd.d_ntracks = 16; |
80d17733 | 1015 | } |
6d2dcc99 NW |
1016 | if (wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0, |
1017 | du->dk_dd.d_nsectors, WDCC_IDC) != 0 | |
e0c9a25d | 1018 | || wdwait(du, WDCS_READY, TIMEOUT) != 0) { |
6d2dcc99 NW |
1019 | wderror((struct buf *)NULL, du, "wdsetctlr failed"); |
1020 | return (1); | |
1021 | } | |
1022 | return (0); | |
1023 | } | |
15637ed4 | 1024 | |
6d2dcc99 NW |
1025 | /* |
1026 | * Wait until driver is inactive, then set up controller. | |
1027 | */ | |
1028 | static int | |
1029 | wdwsetctlr(struct disk *du) | |
1030 | { | |
80d17733 NW |
1031 | int stat; |
1032 | int x; | |
15637ed4 | 1033 | |
6d2dcc99 | 1034 | wdsleep(du->dk_ctrlr, "wdwset"); |
15637ed4 | 1035 | x = splbio(); |
6d2dcc99 | 1036 | stat = wdsetctlr(du); |
80d17733 | 1037 | wdflushirq(du, x); |
15637ed4 | 1038 | splx(x); |
6d2dcc99 | 1039 | return (stat); |
15637ed4 RG |
1040 | } |
1041 | ||
1042 | /* | |
1043 | * issue READP to drive to ask it what it is. | |
1044 | */ | |
1045 | static int | |
80d17733 NW |
1046 | wdgetctlr(struct disk *du) |
1047 | { | |
1048 | int i; | |
1049 | char tb[DEV_BSIZE]; | |
15637ed4 RG |
1050 | struct wdparams *wp; |
1051 | ||
6d2dcc99 | 1052 | if (wdcommand(du, 0, 0, 0, 0, WDCC_READP) != 0 |
e0c9a25d | 1053 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) < 0) { |
80d17733 | 1054 | /* XXX need to check error status after final transfer. */ |
6d2dcc99 | 1055 | /* |
80d17733 NW |
1056 | * Old drives don't support WDCC_READP. Try a seek to 0. |
1057 | * Some IDE controllers return trash if there is no drive | |
1058 | * attached, so first test that the drive can be selected. | |
1059 | * This also avoids long waits for nonexistent drives. | |
6d2dcc99 | 1060 | */ |
e0c9a25d | 1061 | if (wdwait(du, 0, TIMEOUT) < 0) |
80d17733 NW |
1062 | return (1); |
1063 | outb(du->dk_port + wd_sdh, WDSD_IBM | (du->dk_unit << 4)); | |
1064 | DELAY(5000); /* usually unnecessary; drive select is fast */ | |
1065 | if ((inb(du->dk_port + wd_status) & (WDCS_BUSY | WDCS_READY)) | |
1066 | != WDCS_READY | |
1067 | || wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 | |
e0c9a25d | 1068 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) != 0) |
6d2dcc99 | 1069 | return (1); |
6d2dcc99 | 1070 | |
80d17733 NW |
1071 | /* |
1072 | * Fake minimal drive geometry for reading the MBR. | |
1073 | * readdisklabel() may enlarge it to read the label and the | |
1074 | * bad sector table. | |
1075 | */ | |
6d2dcc99 NW |
1076 | du->dk_dd.d_secsize = DEV_BSIZE; |
1077 | du->dk_dd.d_nsectors = 17; | |
1078 | du->dk_dd.d_ntracks = 1; | |
1079 | du->dk_dd.d_ncylinders = 1; | |
1080 | du->dk_dd.d_secpercyl = 17; | |
80d17733 NW |
1081 | du->dk_dd.d_secperunit = 17; |
1082 | ||
1083 | /* | |
1084 | * Fake maximal drive size for writing the label. | |
1085 | */ | |
1086 | du->dk_dd.d_partitions[WDRAW].p_size = 64 * 16 * 1024; | |
3419be7d | 1087 | |
6d2dcc99 NW |
1088 | /* |
1089 | * Fake some more of the label for printing by disklabel(1) | |
1090 | * in case there is no real label. | |
1091 | */ | |
1092 | du->dk_dd.d_type = DTYPE_ST506; | |
1093 | du->dk_dd.d_subtype |= DSTYPE_GEOMETRY; | |
1094 | strncpy(du->dk_dd.d_typename, "Fake geometry", | |
3419be7d | 1095 | sizeof du->dk_dd.d_typename); |
6d2dcc99 NW |
1096 | |
1097 | /* Fake the model name for printing by wdattach(). */ | |
80d17733 | 1098 | strncpy(du->dk_params.wdp_model, "unknown", |
3419be7d | 1099 | sizeof du->dk_params.wdp_model); |
6d2dcc99 NW |
1100 | |
1101 | return (0); | |
15637ed4 RG |
1102 | } |
1103 | ||
1104 | /* obtain parameters */ | |
1105 | wp = &du->dk_params; | |
80d17733 | 1106 | insw(du->dk_port + wd_data, tb, sizeof(tb) / sizeof(short)); |
15637ed4 RG |
1107 | bcopy(tb, wp, sizeof(struct wdparams)); |
1108 | ||
1109 | /* shuffle string byte order */ | |
80d17733 | 1110 | for (i = 0; i < sizeof(wp->wdp_model); i += 2) { |
15637ed4 | 1111 | u_short *p; |
80d17733 | 1112 | |
15637ed4 RG |
1113 | p = (u_short *) (wp->wdp_model + i); |
1114 | *p = ntohs(*p); | |
1115 | } | |
5a1bf060 RG |
1116 | /* |
1117 | * Clean up the wdp_model by converting nulls to spaces, and | |
1118 | * then removing the trailing spaces. | |
1119 | */ | |
1120 | for (i=0; i < sizeof(wp->wdp_model); i++) { | |
bab447b1 RG |
1121 | if (wp->wdp_model[i] == '\0') { |
1122 | wp->wdp_model[i] = ' '; | |
1123 | } | |
1124 | } | |
5a1bf060 RG |
1125 | for (i=sizeof(wp->wdp_model)-1; i>=0 && wp->wdp_model[i]==' '; i--) { |
1126 | wp->wdp_model[i] = '\0'; | |
1127 | } | |
bab447b1 | 1128 | |
80d17733 | 1129 | #ifdef WDDEBUG |
6d2dcc99 | 1130 | printf( |
80d17733 NW |
1131 | "\nwd(%d,%d): wdgetctlr: gc %x cyl %d trk %d sec %d type %d sz %d model %s\n", |
1132 | du->dk_ctrlr, du->dk_unit, wp->wdp_config, | |
1133 | wp->wdp_fixedcyl + wp->wdp_removcyl, wp->wdp_heads, | |
1134 | wp->wdp_sectors, wp->wdp_cntype, wp->wdp_cnsbsz, | |
1135 | wp->wdp_model); | |
6d2dcc99 | 1136 | #endif |
15637ed4 RG |
1137 | |
1138 | /* update disklabel given drive information */ | |
6d2dcc99 | 1139 | du->dk_dd.d_secsize = DEV_BSIZE; |
80d17733 | 1140 | du->dk_dd.d_ncylinders = wp->wdp_fixedcyl + wp->wdp_removcyl /*+- 1*/ ; |
15637ed4 RG |
1141 | du->dk_dd.d_ntracks = wp->wdp_heads; |
1142 | du->dk_dd.d_nsectors = wp->wdp_sectors; | |
1143 | du->dk_dd.d_secpercyl = du->dk_dd.d_ntracks * du->dk_dd.d_nsectors; | |
80d17733 NW |
1144 | du->dk_dd.d_partitions[WDRAW].p_size = du->dk_dd.d_secperunit |
1145 | = du->dk_dd.d_secpercyl * du->dk_dd.d_ncylinders; | |
15637ed4 RG |
1146 | /* dubious ... */ |
1147 | bcopy("ESDI/IDE", du->dk_dd.d_typename, 9); | |
80d17733 | 1148 | bcopy(wp->wdp_model + 20, du->dk_dd.d_packname, 14 - 1); |
15637ed4 RG |
1149 | /* better ... */ |
1150 | du->dk_dd.d_type = DTYPE_ESDI; | |
1151 | du->dk_dd.d_subtype |= DSTYPE_GEOMETRY; | |
80d17733 | 1152 | |
15637ed4 RG |
1153 | return (0); |
1154 | } | |
1155 | ||
1156 | ||
1157 | /* ARGSUSED */ | |
1158 | int | |
1159 | wdclose(dev_t dev, int flags, int fmt) | |
1160 | { | |
1161 | register struct disk *du; | |
80d17733 NW |
1162 | int part = wdpart(dev), mask = 1 << part; |
1163 | ||
1164 | if (wddospart(dev)) | |
1165 | return (0); | |
15637ed4 RG |
1166 | |
1167 | du = wddrives[wdunit(dev)]; | |
1168 | ||
6d2dcc99 NW |
1169 | switch (fmt) { |
1170 | case S_IFCHR: | |
1171 | du->dk_copenpart &= ~mask; | |
1172 | break; | |
1173 | case S_IFBLK: | |
1174 | du->dk_bopenpart &= ~mask; | |
1175 | break; | |
1176 | } | |
80d17733 NW |
1177 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
1178 | ||
1179 | return (0); | |
15637ed4 RG |
1180 | } |
1181 | ||
1182 | int | |
1183 | wdioctl(dev_t dev, int cmd, caddr_t addr, int flag) | |
1184 | { | |
80d17733 | 1185 | int lunit = wdunit(dev); |
15637ed4 | 1186 | register struct disk *du; |
80d17733 | 1187 | int error = 0; |
6d2dcc99 | 1188 | #ifdef notyet |
15637ed4 RG |
1189 | struct uio auio; |
1190 | struct iovec aiov; | |
6d2dcc99 | 1191 | #endif |
15637ed4 | 1192 | |
6d2dcc99 | 1193 | du = wddrives[lunit]; |
15637ed4 RG |
1194 | |
1195 | switch (cmd) { | |
1196 | ||
1197 | case DIOCSBAD: | |
6d2dcc99 NW |
1198 | if ((flag & FWRITE) == 0) |
1199 | error = EBADF; | |
15637ed4 RG |
1200 | else |
1201 | du->dk_bad = *(struct dkbad *)addr; | |
1202 | break; | |
1203 | ||
1204 | case DIOCGDINFO: | |
1205 | *(struct disklabel *)addr = du->dk_dd; | |
1206 | break; | |
1207 | ||
6d2dcc99 | 1208 | case DIOCGPART: |
80d17733 NW |
1209 | if (wddospart(dev)) |
1210 | return (EINVAL); | |
6d2dcc99 NW |
1211 | ((struct partinfo *)addr)->disklab = &du->dk_dd; |
1212 | ((struct partinfo *)addr)->part = | |
1213 | &du->dk_dd.d_partitions[wdpart(dev)]; | |
1214 | break; | |
1215 | ||
1216 | case DIOCSDINFO: | |
1217 | if ((flag & FWRITE) == 0) | |
1218 | error = EBADF; | |
1219 | else | |
1220 | error = setdisklabel(&du->dk_dd, | |
80d17733 NW |
1221 | (struct disklabel *)addr, |
1222 | #if 0 | |
1223 | /* | |
1224 | * XXX setdisklabel() uses the | |
1225 | * openmask to allow it to reject | |
1226 | * changing open partitions. Why | |
1227 | * are we pretending nothing is | |
1228 | * open? | |
1229 | */ | |
1230 | du->dk_flags & DKFL_BSDLABEL | |
1231 | ? du->dk_openpart : | |
1232 | #endif | |
1233 | 0, | |
1234 | du->dk_dospartitions); | |
6d2dcc99 | 1235 | if (error == 0) { |
15637ed4 | 1236 | du->dk_flags |= DKFL_BSDLABEL; |
6d2dcc99 | 1237 | wdwsetctlr(du); /* XXX - check */ |
15637ed4 | 1238 | } |
6d2dcc99 | 1239 | break; |
15637ed4 | 1240 | |
6d2dcc99 | 1241 | case DIOCWLABEL: |
15637ed4 | 1242 | du->dk_flags &= ~DKFL_WRITEPROT; |
6d2dcc99 NW |
1243 | if ((flag & FWRITE) == 0) |
1244 | error = EBADF; | |
1245 | else | |
1246 | du->dk_wlabel = *(int *)addr; | |
1247 | break; | |
15637ed4 | 1248 | |
6d2dcc99 | 1249 | case DIOCWDINFO: |
15637ed4 | 1250 | du->dk_flags &= ~DKFL_WRITEPROT; |
6d2dcc99 NW |
1251 | if ((flag & FWRITE) == 0) |
1252 | error = EBADF; | |
80d17733 NW |
1253 | else if ((error = setdisklabel(&du->dk_dd, |
1254 | (struct disklabel *)addr, | |
1255 | #if 0 | |
1256 | du->dk_flags & DKFL_BSDLABEL | |
1257 | ? du->dk_openpart : | |
1258 | #endif | |
1259 | 0, | |
1260 | du->dk_dospartitions)) == 0) { | |
1261 | int wlab; | |
15637ed4 RG |
1262 | |
1263 | du->dk_flags |= DKFL_BSDLABEL; | |
80d17733 | 1264 | wdwsetctlr(du); /* XXX - check */ |
15637ed4 | 1265 | |
6d2dcc99 NW |
1266 | /* simulate opening partition 0 so write succeeds */ |
1267 | du->dk_openpart |= (1 << 0); /* XXX */ | |
1268 | wlab = du->dk_wlabel; | |
1269 | du->dk_wlabel = 1; | |
19fd9fc6 AS |
1270 | error = writedisklabel(dev, (d_strategy_t *) WDSTRATEGY, |
1271 | &du->dk_dd, du->dk_dospartitions); | |
6d2dcc99 NW |
1272 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
1273 | du->dk_wlabel = wlab; | |
1274 | } | |
1275 | break; | |
15637ed4 RG |
1276 | |
1277 | #ifdef notyet | |
1278 | case DIOCGDINFOP: | |
1279 | *(struct disklabel **)addr = &(du->dk_dd); | |
1280 | break; | |
1281 | ||
1282 | case DIOCWFORMAT: | |
1283 | if ((flag & FWRITE) == 0) | |
1284 | error = EBADF; | |
1285 | else { | |
1286 | register struct format_op *fop; | |
1287 | ||
1288 | fop = (struct format_op *)addr; | |
1289 | aiov.iov_base = fop->df_buf; | |
1290 | aiov.iov_len = fop->df_count; | |
1291 | auio.uio_iov = &aiov; | |
1292 | auio.uio_iovcnt = 1; | |
1293 | auio.uio_resid = fop->df_count; | |
1294 | auio.uio_segflg = 0; | |
1295 | auio.uio_offset = | |
80d17733 NW |
1296 | fop->df_startblk * du->dk_dd.d_secsize; |
1297 | #error /* XXX the 386BSD interface is different */ | |
1298 | error = physio(wdformat, &rwdbuf[lunit], 0, dev, | |
1299 | B_WRITE, minphys, &auio); | |
15637ed4 RG |
1300 | fop->df_count -= auio.uio_resid; |
1301 | fop->df_reg[0] = du->dk_status; | |
1302 | fop->df_reg[1] = du->dk_error; | |
1303 | } | |
1304 | break; | |
1305 | #endif | |
1306 | ||
1307 | default: | |
1308 | error = ENOTTY; | |
1309 | break; | |
1310 | } | |
1311 | return (error); | |
1312 | } | |
1313 | ||
80d17733 | 1314 | #ifdef B_FORMAT |
15637ed4 RG |
1315 | int |
1316 | wdformat(struct buf *bp) | |
1317 | { | |
1318 | ||
1319 | bp->b_flags |= B_FORMAT; | |
1320 | return (wdstrategy(bp)); | |
1321 | } | |
1322 | #endif | |
1323 | ||
1324 | int | |
1325 | wdsize(dev_t dev) | |
1326 | { | |
80d17733 | 1327 | int lunit = wdunit(dev), part = wdpart(dev), val; |
15637ed4 RG |
1328 | struct disk *du; |
1329 | ||
80d17733 NW |
1330 | if (lunit >= NWD || wddospart(dev) || (du = wddrives[lunit]) == NULL) |
1331 | return (-1); | |
6d2dcc99 | 1332 | val = 0; |
80d17733 NW |
1333 | if (du->dk_state == CLOSED) |
1334 | val = wdopen(makewddev(major(dev), lunit, WDRAW), | |
1335 | FREAD, S_IFBLK, 0); | |
1336 | if (val != 0 || du->dk_flags & DKFL_WRITEPROT) | |
15637ed4 | 1337 | return (-1); |
80d17733 | 1338 | return ((int)du->dk_dd.d_partitions[part].p_size); |
15637ed4 RG |
1339 | } |
1340 | ||
80d17733 | 1341 | extern char *vmmap; /* poor name! */ |
15637ed4 | 1342 | |
80d17733 NW |
1343 | /* |
1344 | * Dump core after a system crash. | |
1345 | */ | |
15637ed4 | 1346 | int |
80d17733 | 1347 | wddump(dev_t dev) |
15637ed4 | 1348 | { |
80d17733 | 1349 | register struct disk *du; |
15637ed4 | 1350 | register struct bt_bad *bt_ptr; |
80d17733 NW |
1351 | struct disklabel *lp; |
1352 | long num; /* number of sectors to write */ | |
1353 | int lunit, part; | |
6d2dcc99 | 1354 | long blkoff, blknum; |
80d17733 | 1355 | long blkchk, blkcnt, blknext; |
6d2dcc99 | 1356 | long cylin, head, sector; |
80d17733 NW |
1357 | long secpertrk, secpercyl, nblocks; |
1358 | char *addr; | |
1359 | extern int Maxmem; | |
1360 | static int wddoingadump = 0; | |
15637ed4 RG |
1361 | extern caddr_t CADDR1; |
1362 | ||
80d17733 | 1363 | /* Toss any characters present prior to dump. */ |
146a55b3 | 1364 | while (sgetc(1)) |
15637ed4 RG |
1365 | ; |
1366 | ||
80d17733 NW |
1367 | /* Check for acceptable device. */ |
1368 | /* XXX should reset to maybe allow du->dk_state < OPEN. */ | |
1369 | lunit = wdunit(dev); /* eventually support floppies? */ | |
1370 | part = wdpart(dev); | |
1371 | if (lunit >= NWD || wddospart(dev) || (du = wddrives[lunit]) == NULL | |
1372 | || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT) | |
1373 | return (ENXIO); | |
15637ed4 | 1374 | |
80d17733 NW |
1375 | /* Size of memory to dump, in disk sectors. */ |
1376 | num = (u_long)Maxmem * NBPG / du->dk_dd.d_secsize; | |
15637ed4 RG |
1377 | |
1378 | secpertrk = du->dk_dd.d_nsectors; | |
1379 | secpercyl = du->dk_dd.d_secpercyl; | |
1380 | nblocks = du->dk_dd.d_partitions[part].p_size; | |
1381 | blkoff = du->dk_dd.d_partitions[part].p_offset; | |
1382 | ||
80d17733 NW |
1383 | #if 0 |
1384 | pg("part %x, nblocks %d, dumplo %d num %d\n", | |
1385 | part, nblocks, dumplo, num); | |
1386 | #endif | |
1387 | ||
1388 | /* Check transfer bounds against partition size. */ | |
1389 | if (dumplo < 0 || dumplo + num > nblocks) | |
1390 | return (EINVAL); | |
1391 | ||
1392 | /* Check if we are being called recursively. */ | |
1393 | if (wddoingadump) | |
1394 | return (EFAULT); | |
15637ed4 | 1395 | |
6d2dcc99 | 1396 | #if 0 |
80d17733 NW |
1397 | /* Mark controller active for if we panic during the dump. */ |
1398 | wdtab[du->dk_ctrlr].b_active = 1; | |
6d2dcc99 | 1399 | #endif |
80d17733 NW |
1400 | wddoingadump = 1; |
1401 | ||
1402 | /* Recalibrate the drive. */ | |
1403 | DELAY(5); /* ATA spec XXX NOT */ | |
1404 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 | |
e0c9a25d | 1405 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) != 0 |
80d17733 NW |
1406 | || wdsetctlr(du) != 0) { |
1407 | wderror((struct buf *)NULL, du, "wddump: recalibrate failed"); | |
1408 | return (EIO); | |
1409 | } | |
6d2dcc99 | 1410 | |
80d17733 NW |
1411 | du->dk_flags |= DKFL_SINGLE; |
1412 | addr = (char *) 0; | |
15637ed4 RG |
1413 | blknum = dumplo + blkoff; |
1414 | while (num > 0) { | |
80d17733 NW |
1415 | blkcnt = num; |
1416 | if (blkcnt > MAXTRANSFER) | |
1417 | blkcnt = MAXTRANSFER; | |
1418 | /* Keep transfer within current cylinder. */ | |
15637ed4 RG |
1419 | if ((blknum + blkcnt - 1) / secpercyl != blknum / secpercyl) |
1420 | blkcnt = secpercyl - (blknum % secpercyl); | |
80d17733 | 1421 | blknext = blknum + blkcnt; |
15637ed4 | 1422 | |
15637ed4 | 1423 | /* |
80d17733 NW |
1424 | * See if one of the sectors is in the bad sector list |
1425 | * (if we have one). If the first sector is bad, then | |
1426 | * reduce the transfer to this one bad sector; if another | |
1427 | * sector is bad, then reduce reduce the transfer to | |
1428 | * avoid any bad sectors. | |
15637ed4 | 1429 | */ |
80d17733 NW |
1430 | if ((du->dk_flags & (DKFL_SINGLE | DKFL_BADSECT)) |
1431 | == (DKFL_SINGLE | DKFL_BADSECT)) | |
1432 | for (blkchk = blknum; blkchk < blknum + blkcnt; blkchk++) { | |
1433 | cylin = blkchk / secpercyl; | |
1434 | head = (blkchk % secpercyl) / secpertrk; | |
1435 | sector = blkchk % secpertrk; | |
1436 | for (bt_ptr = du->dk_bad.bt_bad; | |
1437 | bt_ptr->bt_cyl != BAD144_NO_CYL; bt_ptr++) { | |
15637ed4 | 1438 | if (bt_ptr->bt_cyl > cylin) |
80d17733 NW |
1439 | /* |
1440 | * Sorted list, and we passed our cylinder. | |
1441 | * quit. | |
1442 | */ | |
15637ed4 RG |
1443 | break; |
1444 | if (bt_ptr->bt_cyl == cylin && | |
80d17733 NW |
1445 | bt_ptr->bt_trksec == (head << 8) + sector) { |
1446 | /* Found bad block. */ | |
1447 | blkcnt = blkchk - blknum; | |
1448 | if (blkcnt > 0) { | |
1449 | blknext = blknum + blkcnt; | |
1450 | goto out; | |
1451 | } | |
1452 | blkcnt = 1; | |
1453 | blknext = blknum + blkcnt; | |
15637ed4 | 1454 | /* |
80d17733 | 1455 | * Found bad block. Calculate new block number. |
15637ed4 RG |
1456 | * This starts at the end of the disk (skip the |
1457 | * last track which is used for the bad block list), | |
1458 | * and works backwards to the front of the disk. | |
1459 | */ | |
80d17733 NW |
1460 | /* XXX as usual. */ |
1461 | #ifdef WDDEBUG | |
1462 | printf("--- badblock code -> Old = %ld; ", | |
1463 | blknum); | |
1464 | #endif | |
1465 | lp = &du->dk_dd; | |
6d2dcc99 NW |
1466 | if (lp->d_partitions[BSD_PART].p_offset != 0) |
1467 | blknum = lp->d_partitions[BAD144_PART] | |
1468 | .p_offset | |
1469 | + lp->d_partitions[BAD144_PART] | |
1470 | .p_size; | |
1471 | else | |
1472 | blknum = lp->d_secperunit; | |
80d17733 | 1473 | blknum -= lp->d_nsectors |
6d2dcc99 | 1474 | + (bt_ptr - du->dk_bad.bt_bad) + 1; |
80d17733 NW |
1475 | #ifdef WDDEBUG |
1476 | printf("new = %ld\n", blknum); | |
1477 | #endif | |
15637ed4 RG |
1478 | break; |
1479 | } | |
80d17733 NW |
1480 | } |
1481 | } | |
1482 | out: | |
1483 | ||
1484 | /* Compute disk address. */ | |
1485 | cylin = blknum / secpercyl; | |
1486 | head = (blknum % secpercyl) / secpertrk; | |
1487 | sector = blknum % secpertrk; | |
6d2dcc99 | 1488 | |
80d17733 NW |
1489 | #if 0 |
1490 | /* Let's just talk about this first... */ | |
1491 | pg("cylin l%d head %ld sector %ld addr 0x%x count %ld", | |
1492 | cylin, head, sector, addr, blkcnt); | |
1493 | #endif | |
15637ed4 | 1494 | |
80d17733 NW |
1495 | /* Do the write. */ |
1496 | if (wdcommand(du, cylin, head, sector, blkcnt, WDCC_WRITE) | |
1497 | != 0) { | |
1498 | wderror((struct buf *)NULL, du, | |
1499 | "wddump: timeout waiting to to give command"); | |
1500 | return (EIO); | |
1501 | } | |
1502 | while (blkcnt != 0) { | |
1503 | pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), | |
1504 | VM_PROT_READ, TRUE); | |
1505 | ||
1506 | /* Ready to send data? */ | |
1507 | DELAY(5); /* ATA spec */ | |
e0c9a25d | 1508 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) |
80d17733 NW |
1509 | < 0) { |
1510 | wderror((struct buf *)NULL, du, | |
1511 | "wddump: timeout waiting for DRQ"); | |
1512 | return (EIO); | |
1513 | } | |
1514 | outsw(du->dk_port + wd_data, | |
1515 | CADDR1 + ((int)addr & (NBPG - 1)), | |
1516 | DEV_BSIZE / sizeof(short)); | |
1517 | addr += DEV_BSIZE; | |
1518 | if ((unsigned)addr % (1024 * 1024) == 0) | |
1519 | printf("%ld ", num / (1024 * 1024 / DEV_BSIZE)); | |
1520 | num--; | |
1521 | blkcnt--; | |
1522 | } | |
15637ed4 | 1523 | |
80d17733 NW |
1524 | /* Wait for completion. */ |
1525 | DELAY(5); /* ATA spec XXX NOT */ | |
e0c9a25d | 1526 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) < 0) { |
80d17733 NW |
1527 | wderror((struct buf *)NULL, du, |
1528 | "wddump: timeout waiting for status"); | |
1529 | return (EIO); | |
1530 | } | |
15637ed4 | 1531 | |
80d17733 NW |
1532 | /* Check final status. */ |
1533 | if (du->dk_status | |
1534 | & (WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ | WDCS_ERR) | |
1535 | != (WDCS_READY | WDCS_SEEKCMPLT)) { | |
1536 | wderror((struct buf *)NULL, du, | |
1537 | "wddump: extra DRQ, or error"); | |
1538 | return (EIO); | |
15637ed4 | 1539 | } |
80d17733 NW |
1540 | |
1541 | /* Update block count. */ | |
1542 | blknum = blknext; | |
1543 | ||
1544 | /* Operator aborting dump? */ | |
1545 | if (sgetc(1) & 0xff) /* EWS: A hack to work with syscons */ | |
1546 | return (EINTR); | |
15637ed4 | 1547 | } |
80d17733 | 1548 | return (0); |
15637ed4 | 1549 | } |
6d2dcc99 NW |
1550 | |
1551 | static void | |
1552 | wderror(struct buf *bp, struct disk *du, char *mesg) | |
1553 | { | |
1554 | if (bp == NULL) | |
eb30d5d6 | 1555 | printf("wd%d: %s:\n", du->dk_lunit, mesg); |
6d2dcc99 NW |
1556 | else |
1557 | diskerr(bp, "wd", mesg, LOG_PRINTF, du->dk_skip, &du->dk_dd); | |
eb30d5d6 | 1558 | printf("wd%d: status %b error %b\n", du->dk_lunit, |
80d17733 NW |
1559 | du->dk_status, WDCS_BITS, du->dk_error, WDERR_BITS); |
1560 | } | |
1561 | ||
1562 | /* | |
1563 | * Discard any interrupts that were latched by the interrupt system while | |
1564 | * we were doing polled i/o. | |
1565 | */ | |
1566 | static void | |
1567 | wdflushirq(struct disk *du, int old_ipl) | |
1568 | { | |
1569 | wdtab[du->dk_ctrlr].b_active = 2; | |
1570 | splx(old_ipl); | |
1571 | (void)splbio(); | |
1572 | wdtab[du->dk_ctrlr].b_active = 0; | |
6d2dcc99 NW |
1573 | } |
1574 | ||
1575 | /* | |
1576 | * Reset the controller. | |
1577 | */ | |
1578 | static int | |
1579 | wdreset(struct disk *du) | |
1580 | { | |
80d17733 | 1581 | int wdc; |
6d2dcc99 NW |
1582 | |
1583 | wdc = du->dk_port; | |
e0c9a25d | 1584 | (void)wdwait(du, 0, TIMEOUT); |
6d2dcc99 NW |
1585 | outb(wdc + wd_ctlr, WDCTL_IDS | WDCTL_RST); |
1586 | DELAY(10 * 1000); | |
1587 | outb(wdc + wd_ctlr, WDCTL_IDS); | |
e0c9a25d | 1588 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) != 0 |
6d2dcc99 NW |
1589 | || (du->dk_error = inb(wdc + wd_error)) != 0x01) |
1590 | return (1); | |
1591 | outb(wdc + wd_ctlr, WDCTL_4BIT); | |
1592 | return (0); | |
1593 | } | |
1594 | ||
1595 | /* | |
1596 | * Sleep until driver is inactive. | |
1597 | * This is used only for avoiding rare race conditions, so it is unimportant | |
1598 | * that the sleep may be far too short or too long. | |
1599 | */ | |
1600 | static void | |
1601 | wdsleep(int ctrlr, char *wmesg) | |
1602 | { | |
1603 | while (wdtab[ctrlr].b_active) | |
1604 | tsleep((caddr_t)&wdtab[ctrlr].b_active, PZERO - 1, wmesg, 1); | |
1605 | } | |
1606 | ||
19fd9fc6 | 1607 | static void |
80d17733 NW |
1608 | wdtimeout(caddr_t cdu, int ticks) |
1609 | { | |
1610 | struct disk *du; | |
1611 | int x; | |
1612 | ||
1613 | du = (struct disk *)cdu; | |
1614 | x = splbio(); | |
1615 | if (du->dk_timeout != 0 && --du->dk_timeout == 0) { | |
1616 | wderror((struct buf *)NULL, du, "interrupt timeout"); | |
1617 | wdunwedge(du); | |
1618 | wdflushirq(du, x); | |
1619 | du->dk_skip = 0; | |
1620 | du->dk_flags |= DKFL_SINGLE; | |
1621 | wdstart(du->dk_ctrlr); | |
1622 | } | |
1623 | timeout(wdtimeout, cdu, hz); | |
1624 | splx(x); | |
80d17733 NW |
1625 | } |
1626 | ||
6d2dcc99 NW |
1627 | /* |
1628 | * Reset the controller after it has become wedged. This is different from | |
1629 | * wdreset() so that wdreset() can be used in the probe and so that this | |
1630 | * can restore the geometry . | |
1631 | */ | |
1632 | static int | |
1633 | wdunwedge(struct disk *du) | |
1634 | { | |
1635 | struct disk *du1; | |
80d17733 | 1636 | int lunit; |
6d2dcc99 NW |
1637 | |
1638 | /* Schedule other drives for recalibration. */ | |
1639 | for (lunit = 0; lunit < NWD; lunit++) | |
1640 | if ((du1 = wddrives[lunit]) != NULL && du1 != du | |
1641 | && du1->dk_ctrlr == du->dk_ctrlr | |
1642 | && du1->dk_state > WANTOPEN) | |
1643 | du1->dk_state = WANTOPEN; | |
1644 | ||
1645 | DELAY(RECOVERYTIME); | |
1646 | if (wdreset(du) == 0) { | |
1647 | /* | |
1648 | * XXX - recalibrate current drive now because some callers | |
1649 | * aren't prepared to have its state change. | |
1650 | */ | |
1651 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) == 0 | |
e0c9a25d | 1652 | && wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) == 0 |
6d2dcc99 NW |
1653 | && wdsetctlr(du) == 0) |
1654 | return (0); | |
1655 | } | |
1656 | wderror((struct buf *)NULL, du, "wdunwedge failed"); | |
1657 | return (1); | |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * Wait uninterruptibly until controller is not busy and either certain | |
1662 | * status bits are set or an error has occurred. | |
1663 | * The wait is usually short unless it is for the controller to process | |
1664 | * an entire critical command. | |
1665 | * Return 1 for (possibly stale) controller errors, -1 for timeout errors, | |
1666 | * or 0 for no errors. | |
1667 | * Return controller status in du->dk_status and, if there was a controller | |
1668 | * error, return the error code in du->dk_error. | |
1669 | */ | |
80d17733 | 1670 | #ifdef WD_COUNT_RETRIES |
6d2dcc99 | 1671 | static int min_retries[NWDC]; |
80d17733 NW |
1672 | #endif |
1673 | ||
6d2dcc99 | 1674 | static int |
e0c9a25d | 1675 | wdwait(struct disk *du, u_char bits_wanted, int timeout) |
6d2dcc99 | 1676 | { |
80d17733 NW |
1677 | int wdc; |
1678 | u_char status; | |
1679 | ||
6d2dcc99 | 1680 | #define POLLING 1000 |
6d2dcc99 NW |
1681 | |
1682 | wdc = du->dk_port; | |
e0c9a25d | 1683 | timeout += POLLING; |
6d2dcc99 | 1684 | do { |
80d17733 | 1685 | #ifdef WD_COUNT_RETRIES |
e0c9a25d | 1686 | if (min_retries[du->dk_ctrlr] > timeout |
80d17733 | 1687 | || min_retries[du->dk_ctrlr] == 0) |
e0c9a25d | 1688 | min_retries[du->dk_ctrlr] = timeout; |
80d17733 NW |
1689 | #endif |
1690 | DELAY(5); /* ATA spec XXX NOT */ | |
6d2dcc99 NW |
1691 | du->dk_status = status = inb(wdc + wd_status); |
1692 | if (!(status & WDCS_BUSY)) { | |
1693 | if (status & WDCS_ERR) { | |
1694 | du->dk_error = inb(wdc + wd_error); | |
1695 | /* | |
1696 | * We once returned here. This is wrong | |
1697 | * because the error bit is apparently only | |
1698 | * valid after the controller has interrupted | |
1699 | * (e.g., the error bit is stale when we wait | |
1700 | * for DRQ for writes). So we can't depend | |
1701 | * on the error bit at all when polling for | |
1702 | * command completion. | |
1703 | */ | |
1704 | } | |
1705 | if ((status & bits_wanted) == bits_wanted) | |
1706 | return (status & WDCS_ERR); | |
1707 | } | |
e0c9a25d | 1708 | if (timeout < TIMEOUT) |
6d2dcc99 NW |
1709 | /* |
1710 | * Switch to a polling rate of about 1 KHz so that | |
1711 | * the timeout is almost machine-independent. The | |
1712 | * controller is taking a long time to respond, so | |
1713 | * an extra msec won't matter. | |
1714 | */ | |
1715 | DELAY(1000); | |
e0c9a25d | 1716 | } while (--timeout != 0); |
6d2dcc99 NW |
1717 | return (-1); |
1718 | } | |
1719 | ||
80d17733 | 1720 | #endif /* NWDC > 0 */ |