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 |
eb30d5d6 | 40 | * $Id: wd.c,v 1.29 1994/02/11 12:02:35 nate 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. |
80d17733 NW |
259 | */ |
260 | if (wdgetctlr(du) == 0) { | |
eb30d5d6 RG |
261 | printf("wdc%d: unit %d (wd%d): <%s>\n", |
262 | dvp->id_unit, unit, lunit, du->dk_params.wdp_model); | |
263 | if (du->dk_params.wdp_heads == 0) | |
264 | printf("wd%d: size unknown\n", lunit); | |
265 | else | |
266 | printf("wd%d: %luMB (%lu total sec), ", | |
267 | lunit, | |
268 | du->dk_dd.d_secperunit | |
269 | * du->dk_dd.d_secsize / (1024 * 1024), | |
270 | du->dk_dd.d_secperunit); | |
271 | printf("%lu cyl, %lu head, %lu sec, bytes/sec %lu\n", | |
272 | du->dk_dd.d_ncylinders, | |
273 | du->dk_dd.d_ntracks, | |
274 | du->dk_dd.d_nsectors, | |
275 | du->dk_dd.d_secsize); | |
80d17733 NW |
276 | /* |
277 | * Start timeout routine for this drive. | |
278 | * XXX timeout should be per controller. | |
279 | */ | |
280 | wdtimeout((caddr_t)du, 0); | |
281 | } else { | |
6d2dcc99 | 282 | free(du, M_TEMP); |
80d17733 | 283 | wddrives[lunit] = NULL; |
15637ed4 RG |
284 | } |
285 | } | |
80d17733 NW |
286 | |
287 | /* | |
288 | * Discard any interrupts generated by wdgetctlr(). wdflushirq() | |
289 | * doesn't work now because the ambient ipl is too high. | |
290 | */ | |
291 | wdtab[dvp->id_unit].b_active = 2; | |
292 | ||
293 | return (1); | |
15637ed4 RG |
294 | } |
295 | ||
296 | /* Read/write routine for a buffer. Finds the proper unit, range checks | |
297 | * arguments, and schedules the transfer. Does not wait for the transfer | |
298 | * to complete. Multi-page transfers are supported. All I/O requests must | |
299 | * be a multiple of a sector in length. | |
300 | */ | |
4c45483e | 301 | void |
15637ed4 RG |
302 | wdstrategy(register struct buf *bp) |
303 | { | |
304 | register struct buf *dp; | |
80d17733 | 305 | struct disk *du; |
6d2dcc99 | 306 | int lunit = wdunit(bp->b_dev); |
15637ed4 RG |
307 | int s; |
308 | ||
309 | /* valid unit, controller, and request? */ | |
80d17733 | 310 | if (lunit >= NWD || bp->b_blkno < 0 || (du = wddrives[lunit]) == NULL) { |
15637ed4 RG |
311 | |
312 | bp->b_error = EINVAL; | |
313 | bp->b_flags |= B_ERROR; | |
314 | goto done; | |
315 | } | |
316 | ||
317 | /* "soft" write protect check */ | |
318 | if ((du->dk_flags & DKFL_WRITEPROT) && (bp->b_flags & B_READ) == 0) { | |
319 | bp->b_error = EROFS; | |
320 | bp->b_flags |= B_ERROR; | |
321 | goto done; | |
322 | } | |
323 | ||
80d17733 NW |
324 | /* |
325 | * Do bounds checking, adjust transfer, and set b_cylin. | |
326 | */ | |
327 | if (bounds_check_with_label(bp, wddospart(bp->b_dev) | |
328 | ? &du->dk_dd2 : &du->dk_dd, | |
329 | du->dk_wlabel) <= 0) | |
330 | goto done; | |
15637ed4 | 331 | |
15637ed4 | 332 | /* queue transfer on drive, activate drive and controller if idle */ |
6d2dcc99 | 333 | dp = &wdutab[lunit]; |
15637ed4 RG |
334 | s = splbio(); |
335 | disksort(dp, bp); | |
336 | if (dp->b_active == 0) | |
80d17733 | 337 | wdustart(du); /* start drive */ |
6d2dcc99 NW |
338 | |
339 | /* Pick up changes made by readdisklabel(). */ | |
340 | if (du->dk_flags & DKFL_LABELLING && du->dk_state > RECAL) { | |
341 | wdsleep(du->dk_ctrlr, "wdlab"); | |
342 | du->dk_state = WANTOPEN; | |
343 | } | |
344 | ||
345 | if (wdtab[du->dk_ctrlr].b_active == 0) | |
80d17733 | 346 | wdstart(du->dk_ctrlr); /* start controller */ |
15637ed4 RG |
347 | splx(s); |
348 | return; | |
349 | ||
350 | done: | |
351 | /* toss transfer, we're done early */ | |
352 | biodone(bp); | |
353 | } | |
354 | ||
355 | /* | |
356 | * Routine to queue a command to the controller. The unit's | |
357 | * request is linked into the active list for the controller. | |
358 | * If the controller is idle, the transfer is started. | |
359 | */ | |
360 | static void | |
361 | wdustart(register struct disk *du) | |
362 | { | |
6d2dcc99 | 363 | register struct buf *bp, *dp = &wdutab[du->dk_lunit]; |
80d17733 | 364 | int ctrlr = du->dk_ctrlr; |
15637ed4 RG |
365 | |
366 | /* unit already active? */ | |
367 | if (dp->b_active) | |
368 | return; | |
369 | ||
370 | /* anything to start? */ | |
371 | bp = dp->b_actf; | |
372 | if (bp == NULL) | |
6d2dcc99 | 373 | return; |
15637ed4 RG |
374 | |
375 | /* link onto controller queue */ | |
376 | dp->b_forw = NULL; | |
80d17733 | 377 | if (wdtab[ctrlr].b_actf == NULL) |
6d2dcc99 | 378 | wdtab[ctrlr].b_actf = dp; |
15637ed4 | 379 | else |
6d2dcc99 NW |
380 | wdtab[ctrlr].b_actl->b_forw = dp; |
381 | wdtab[ctrlr].b_actl = dp; | |
15637ed4 RG |
382 | |
383 | /* mark the drive unit as busy */ | |
384 | dp->b_active = 1; | |
385 | } | |
386 | ||
387 | /* | |
388 | * Controller startup routine. This does the calculation, and starts | |
389 | * a single-sector read or write operation. Called to start a transfer, | |
390 | * or from the interrupt routine to continue a multi-sector transfer. | |
391 | * RESTRICTIONS: | |
6d2dcc99 | 392 | * 1. The transfer length must be an exact multiple of the sector size. |
15637ed4 RG |
393 | */ |
394 | ||
395 | static void | |
6d2dcc99 | 396 | wdstart(int ctrlr) |
15637ed4 | 397 | { |
80d17733 | 398 | register struct disk *du; |
15637ed4 RG |
399 | register struct buf *bp; |
400 | struct disklabel *lp; | |
401 | struct buf *dp; | |
402 | register struct bt_bad *bt_ptr; | |
6d2dcc99 | 403 | long blknum, cylin, head, sector; |
80d17733 NW |
404 | long secpertrk, secpercyl; |
405 | int lunit; | |
15637ed4 RG |
406 | |
407 | loop: | |
408 | /* is there a drive for the controller to do a transfer with? */ | |
6d2dcc99 | 409 | dp = wdtab[ctrlr].b_actf; |
15637ed4 RG |
410 | if (dp == NULL) |
411 | return; | |
412 | ||
80d17733 NW |
413 | /* |
414 | * Is there a transfer to this drive? If so, link it on the | |
415 | * controller's queue. | |
416 | */ | |
15637ed4 RG |
417 | bp = dp->b_actf; |
418 | if (bp == NULL) { | |
6d2dcc99 | 419 | wdtab[ctrlr].b_actf = dp->b_forw; |
15637ed4 RG |
420 | goto loop; |
421 | } | |
422 | ||
423 | /* obtain controller and drive information */ | |
6d2dcc99 NW |
424 | lunit = wdunit(bp->b_dev); |
425 | du = wddrives[lunit]; | |
15637ed4 RG |
426 | |
427 | /* if not really a transfer, do control operations specially */ | |
428 | if (du->dk_state < OPEN) { | |
6d2dcc99 NW |
429 | if (du->dk_state != WANTOPEN) |
430 | printf("wd%d: wdstart: weird dk_state %d\n", | |
80d17733 | 431 | du->dk_lunit, du->dk_state); |
6d2dcc99 NW |
432 | if (wdcontrol(bp) != 0) |
433 | printf("wd%d: wdstart: wdcontrol returned nonzero, state = %d\n", | |
80d17733 | 434 | du->dk_lunit, du->dk_state); |
15637ed4 RG |
435 | return; |
436 | } | |
437 | ||
438 | /* calculate transfer details */ | |
439 | blknum = bp->b_blkno + du->dk_skip; | |
6d2dcc99 | 440 | #ifdef WDDEBUG |
15637ed4 | 441 | if (du->dk_skip == 0) |
6d2dcc99 | 442 | printf("wd%d: wdstart: %s %d@%d; map ", lunit, |
80d17733 NW |
443 | (bp->b_flags & B_READ) ? "read" : "write", |
444 | bp->b_bcount, blknum); | |
15637ed4 | 445 | else |
80d17733 | 446 | printf(" %d)%x", du->dk_skip, inb(du->dk_port + wd_altsts)); |
15637ed4 | 447 | #endif |
15637ed4 RG |
448 | if (du->dk_skip == 0) |
449 | du->dk_bc = bp->b_bcount; | |
450 | ||
451 | lp = &du->dk_dd; | |
452 | secpertrk = lp->d_nsectors; | |
453 | secpercyl = lp->d_secpercyl; | |
80d17733 NW |
454 | if (wddospart(bp->b_dev)) |
455 | blknum += du->dk_dd2.d_partitions[wdpart(bp->b_dev)].p_offset; | |
456 | else | |
15637ed4 RG |
457 | blknum += lp->d_partitions[wdpart(bp->b_dev)].p_offset; |
458 | cylin = blknum / secpercyl; | |
459 | head = (blknum % secpercyl) / secpertrk; | |
460 | sector = blknum % secpertrk; | |
461 | ||
462 | /* | |
463 | * See if the current block is in the bad block list. | |
464 | * (If we have one, and not formatting.) | |
465 | */ | |
80d17733 NW |
466 | if ((du->dk_flags & (DKFL_SINGLE | DKFL_BADSECT)) |
467 | == (DKFL_SINGLE | DKFL_BADSECT)) | |
468 | #define BAD144_NO_CYL 0xffff /* XXX should be in dkbad.h; bad144.c uses -1 */ | |
469 | for (bt_ptr = du->dk_bad.bt_bad; bt_ptr->bt_cyl != BAD144_NO_CYL; | |
6d2dcc99 | 470 | bt_ptr++) { |
15637ed4 RG |
471 | if (bt_ptr->bt_cyl > cylin) |
472 | /* Sorted list, and we passed our cylinder. quit. */ | |
473 | break; | |
474 | if (bt_ptr->bt_cyl == cylin && | |
6d2dcc99 | 475 | bt_ptr->bt_trksec == (head << 8) + sector) { |
15637ed4 | 476 | /* |
80d17733 | 477 | * Found bad block. Calculate new block number. |
15637ed4 RG |
478 | * This starts at the end of the disk (skip the |
479 | * last track which is used for the bad block list), | |
480 | * and works backwards to the front of the disk. | |
481 | */ | |
80d17733 NW |
482 | #ifdef WDDEBUG |
483 | printf("--- badblock code -> Old = %ld; ", blknum); | |
15637ed4 | 484 | #endif |
6d2dcc99 NW |
485 | |
486 | /* | |
487 | * XXX the offset of the bad sector table ought | |
488 | * to be stored in the in-core copy of the table. | |
489 | */ | |
490 | #define BAD144_PART 2 /* XXX scattered magic numbers */ | |
491 | #define BSD_PART 0 /* XXX should be 2 but bad144.c uses 0 */ | |
492 | if (lp->d_partitions[BSD_PART].p_offset != 0) | |
493 | blknum = lp->d_partitions[BAD144_PART].p_offset | |
494 | + lp->d_partitions[BAD144_PART].p_size; | |
495 | else | |
496 | blknum = lp->d_secperunit; | |
497 | blknum -= lp->d_nsectors + (bt_ptr - du->dk_bad.bt_bad) | |
498 | + 1; | |
499 | ||
15637ed4 RG |
500 | cylin = blknum / secpercyl; |
501 | head = (blknum % secpercyl) / secpertrk; | |
502 | sector = blknum % secpertrk; | |
80d17733 NW |
503 | #ifdef WDDEBUG |
504 | printf("new = %ld\n", blknum); | |
15637ed4 RG |
505 | #endif |
506 | break; | |
507 | } | |
508 | } | |
15637ed4 | 509 | |
80d17733 | 510 | wdtab[ctrlr].b_active = 1; /* mark controller active */ |
15637ed4 | 511 | |
15637ed4 RG |
512 | /* if starting a multisector transfer, or doing single transfers */ |
513 | if (du->dk_skip == 0 || (du->dk_flags & DKFL_SINGLE)) { | |
80d17733 NW |
514 | u_int command; |
515 | u_int count; | |
15637ed4 | 516 | |
6d2dcc99 NW |
517 | if (wdtab[ctrlr].b_errcnt && (bp->b_flags & B_READ) == 0) |
518 | du->dk_bc += DEV_BSIZE; | |
90af2aa0 | 519 | |
80d17733 | 520 | #ifdef B_FORMAT |
15637ed4 | 521 | if (bp->b_flags & B_FORMAT) { |
6d2dcc99 NW |
522 | command = WDCC_FORMAT; |
523 | count = lp->d_nsectors; | |
524 | sector = lp->d_gap3 - 1; /* + 1 later */ | |
525 | } else | |
15637ed4 | 526 | #endif |
6d2dcc99 | 527 | { |
80d17733 NW |
528 | if (du->dk_flags & DKFL_SINGLE) |
529 | count = 1; | |
530 | else | |
531 | count = howmany(du->dk_bc, DEV_BSIZE); | |
532 | command = (bp->b_flags & B_READ) | |
533 | ? WDCC_READ : WDCC_WRITE; | |
15637ed4 | 534 | } |
90af2aa0 | 535 | |
6d2dcc99 NW |
536 | /* |
537 | * XXX this loop may never terminate. The code to handle | |
80d17733 NW |
538 | * counting down of retries and eventually failing the i/o |
539 | * is in wdintr() and we can't get there from here. | |
6d2dcc99 NW |
540 | */ |
541 | if (wdtest != 0) { | |
542 | if (--wdtest == 0) { | |
543 | wdtest = 100; | |
544 | printf("dummy wdunwedge\n"); | |
545 | wdunwedge(du); | |
546 | } | |
547 | } | |
80d17733 NW |
548 | while (wdcommand(du, cylin, head, sector, count, command) |
549 | != 0) { | |
6d2dcc99 | 550 | wderror(bp, du, |
80d17733 | 551 | "wdstart: timeout waiting to give command"); |
6d2dcc99 | 552 | wdunwedge(du); |
4035d7c4 | 553 | } |
80d17733 NW |
554 | #ifdef WDDEBUG |
555 | printf("cylin %ld head %ld sector %ld addr %x sts %x\n", | |
556 | cylin, head, sector, | |
557 | (int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, | |
558 | inb(du->dk_port + wd_altsts)); | |
15637ed4 RG |
559 | #endif |
560 | } | |
561 | ||
80d17733 NW |
562 | /* |
563 | * Schedule wdtimeout() to wake up after a few seconds. Retrying | |
564 | * unmarked bad blocks can take 3 seconds! Then it is not good that | |
565 | * we retry 5 times. | |
566 | * | |
567 | * XXX wdtimeout() doesn't increment the error count so we may loop | |
568 | * forever. More seriously, the loop isn't forever but causes a | |
569 | * crash. | |
570 | * | |
571 | * TODO fix b_resid bug elsewhere (fd.c....). Fix short but positive | |
572 | * counts being discarded after there is an error (in physio I | |
573 | * think). Discarding them would be OK if the (special) file offset | |
574 | * was not advanced. | |
575 | */ | |
576 | du->dk_timeout = 1 + 1; | |
577 | ||
578 | /* If this is a read operation, just go away until it's done. */ | |
579 | if (bp->b_flags & B_READ) | |
580 | return; | |
15637ed4 | 581 | |
80d17733 | 582 | /* Ready to send data? */ |
e0c9a25d | 583 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) < 0) { |
6d2dcc99 NW |
584 | wderror(bp, du, "wdstart: timeout waiting for DRQ"); |
585 | /* | |
586 | * XXX what do we do now? If we've just issued the command, | |
587 | * then we can treat this failure the same as a command | |
588 | * failure. But if we are continuing a multi-sector write, | |
589 | * the command was issued ages ago, so we can't simply | |
590 | * restart it. | |
591 | * | |
80d17733 NW |
592 | * XXX we waste a lot of time unnecessarily translating block |
593 | * numbers to cylin/head/sector for continued i/o's. | |
6d2dcc99 | 594 | */ |
15637ed4 RG |
595 | } |
596 | ||
597 | /* then send it! */ | |
80d17733 | 598 | outsw(du->dk_port + wd_data, |
19fd9fc6 | 599 | (void *)((int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE), |
80d17733 | 600 | DEV_BSIZE / sizeof(short)); |
15637ed4 RG |
601 | du->dk_bc -= DEV_BSIZE; |
602 | } | |
603 | ||
604 | /* Interrupt routine for the controller. Acknowledge the interrupt, check for | |
605 | * errors on the current operation, mark it done if necessary, and start | |
606 | * the next request. Also check for a partially done transfer, and | |
607 | * continue with the next chunk if so. | |
608 | */ | |
609 | void | |
6d2dcc99 | 610 | wdintr(int unit) |
15637ed4 RG |
611 | { |
612 | register struct disk *du; | |
613 | register struct buf *bp, *dp; | |
15637ed4 | 614 | |
80d17733 NW |
615 | if (wdtab[unit].b_active == 2) |
616 | return; /* intr in wdflushirq() */ | |
6d2dcc99 NW |
617 | if (!wdtab[unit].b_active) { |
618 | printf("wdc%d: extra interrupt\n", unit); | |
15637ed4 RG |
619 | return; |
620 | } | |
621 | ||
6d2dcc99 | 622 | dp = wdtab[unit].b_actf; |
15637ed4 RG |
623 | bp = dp->b_actf; |
624 | du = wddrives[wdunit(bp->b_dev)]; | |
80d17733 | 625 | du->dk_timeout = 0; |
15637ed4 | 626 | |
e0c9a25d | 627 | if (wdwait(du, 0, TIMEOUT) < 0) { |
6d2dcc99 NW |
628 | wderror(bp, du, "wdintr: timeout waiting for status"); |
629 | du->dk_status |= WDCS_ERR; /* XXX */ | |
630 | } | |
15637ed4 RG |
631 | |
632 | /* is it not a transfer, but a control operation? */ | |
633 | if (du->dk_state < OPEN) { | |
6d2dcc99 | 634 | wdtab[unit].b_active = 0; |
15637ed4 | 635 | if (wdcontrol(bp)) |
6d2dcc99 | 636 | wdstart(unit); |
15637ed4 RG |
637 | return; |
638 | } | |
639 | ||
640 | /* have we an error? */ | |
6d2dcc99 NW |
641 | if (du->dk_status & (WDCS_ERR | WDCS_ECCCOR)) { |
642 | oops: | |
80d17733 | 643 | #ifdef WDDEBUG |
6d2dcc99 | 644 | wderror(bp, du, "wdintr"); |
15637ed4 | 645 | #endif |
80d17733 NW |
646 | if ((du->dk_flags & DKFL_SINGLE) == 0) { |
647 | du->dk_flags |= DKFL_ERROR; | |
15637ed4 RG |
648 | goto outt; |
649 | } | |
650 | #ifdef B_FORMAT | |
651 | if (bp->b_flags & B_FORMAT) { | |
80d17733 | 652 | bp->b_error = EIO; |
15637ed4 RG |
653 | bp->b_flags |= B_ERROR; |
654 | goto done; | |
655 | } | |
656 | #endif | |
6d2dcc99 | 657 | |
15637ed4 | 658 | /* error or error correction? */ |
6d2dcc99 NW |
659 | if (du->dk_status & WDCS_ERR) { |
660 | if (++wdtab[unit].b_errcnt < RETRIES) { | |
661 | wdtab[unit].b_active = 0; | |
15637ed4 | 662 | } else { |
6d2dcc99 | 663 | wderror(bp, du, "hard error"); |
80d17733 | 664 | bp->b_error = EIO; |
15637ed4 RG |
665 | bp->b_flags |= B_ERROR; /* flag the error */ |
666 | } | |
6d2dcc99 NW |
667 | } else |
668 | wderror(bp, du, "soft ecc"); | |
15637ed4 | 669 | } |
15637ed4 RG |
670 | |
671 | /* | |
672 | * If this was a successful read operation, fetch the data. | |
673 | */ | |
80d17733 NW |
674 | if (((bp->b_flags & (B_READ | B_ERROR)) == B_READ) |
675 | && wdtab[unit].b_active) { | |
676 | int chk, dummy; | |
15637ed4 RG |
677 | |
678 | chk = min(DEV_BSIZE / sizeof(short), du->dk_bc / sizeof(short)); | |
679 | ||
680 | /* ready to receive data? */ | |
e0c9a25d | 681 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) != 0) { |
6d2dcc99 NW |
682 | wderror(bp, du, "wdintr: read error detected late"); |
683 | goto oops; | |
684 | } | |
15637ed4 RG |
685 | |
686 | /* suck in data */ | |
80d17733 | 687 | insw(du->dk_port + wd_data, |
19fd9fc6 AS |
688 | (void *)((int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE), |
689 | chk); | |
15637ed4 RG |
690 | du->dk_bc -= chk * sizeof(short); |
691 | ||
80d17733 NW |
692 | /* XXX for obsolete fractional sector reads. */ |
693 | while (chk++ < DEV_BSIZE / sizeof(short)) | |
694 | insw(du->dk_port + wd_data, &dummy, 1); | |
15637ed4 RG |
695 | } |
696 | ||
6d2dcc99 NW |
697 | wdxfer[du->dk_lunit]++; |
698 | outt: | |
699 | if (wdtab[unit].b_active) { | |
15637ed4 | 700 | if ((bp->b_flags & B_ERROR) == 0) { |
80d17733 | 701 | du->dk_skip++; /* add to successful sectors */ |
6d2dcc99 NW |
702 | if (wdtab[unit].b_errcnt) |
703 | wderror(bp, du, "soft error"); | |
704 | wdtab[unit].b_errcnt = 0; | |
15637ed4 RG |
705 | |
706 | /* see if more to transfer */ | |
707 | if (du->dk_bc > 0 && (du->dk_flags & DKFL_ERROR) == 0) { | |
6d2dcc99 NW |
708 | wdtab[unit].b_active = 0; |
709 | wdstart(unit); | |
80d17733 NW |
710 | return; /* next chunk is started */ |
711 | } else if ((du->dk_flags & (DKFL_SINGLE | DKFL_ERROR)) | |
712 | == DKFL_ERROR) { | |
15637ed4 RG |
713 | du->dk_skip = 0; |
714 | du->dk_flags &= ~DKFL_ERROR; | |
80d17733 | 715 | du->dk_flags |= DKFL_SINGLE; |
6d2dcc99 NW |
716 | wdtab[unit].b_active = 0; |
717 | wdstart(unit); | |
80d17733 | 718 | return; /* redo xfer sector by sector */ |
15637ed4 RG |
719 | } |
720 | } | |
6d2dcc99 NW |
721 | #ifdef B_FORMAT |
722 | done: ; | |
723 | #endif | |
15637ed4 RG |
724 | /* done with this transfer, with or without error */ |
725 | du->dk_flags &= ~DKFL_SINGLE; | |
6d2dcc99 NW |
726 | wdtab[unit].b_actf = dp->b_forw; |
727 | wdtab[unit].b_errcnt = 0; | |
80d17733 | 728 | bp->b_resid = bp->b_bcount - du->dk_skip * DEV_BSIZE; |
15637ed4 RG |
729 | du->dk_skip = 0; |
730 | dp->b_active = 0; | |
731 | dp->b_actf = bp->av_forw; | |
732 | dp->b_errcnt = 0; | |
15637ed4 RG |
733 | biodone(bp); |
734 | } | |
735 | ||
736 | /* controller idle */ | |
6d2dcc99 | 737 | wdtab[unit].b_active = 0; |
15637ed4 RG |
738 | |
739 | /* anything more on drive queue? */ | |
740 | if (dp->b_actf) | |
741 | wdustart(du); | |
742 | /* anything more for controller to do? */ | |
6d2dcc99 NW |
743 | if (wdtab[unit].b_actf) |
744 | wdstart(unit); | |
15637ed4 RG |
745 | } |
746 | ||
747 | /* | |
748 | * Initialize a drive. | |
749 | */ | |
750 | int | |
751 | wdopen(dev_t dev, int flags, int fmt, struct proc *p) | |
752 | { | |
6d2dcc99 | 753 | register unsigned int lunit; |
15637ed4 | 754 | register struct disk *du; |
80d17733 | 755 | int part = wdpart(dev), mask = 1 << part; |
6d2dcc99 | 756 | struct partition *pp; |
80d17733 | 757 | char *msg; |
6d2dcc99 | 758 | struct disklabel save_label; |
15637ed4 | 759 | |
6d2dcc99 | 760 | lunit = wdunit(dev); |
80d17733 NW |
761 | if (lunit >= NWD) |
762 | return (ENXIO); | |
6d2dcc99 | 763 | du = wddrives[lunit]; |
80d17733 NW |
764 | if (du == NULL) |
765 | return (ENXIO); | |
766 | ||
767 | /* Finish flushing IRQs left over from wdattach(). */ | |
768 | if (wdtab[du->dk_ctrlr].b_active == 2) | |
769 | wdtab[du->dk_ctrlr].b_active = 0; | |
770 | ||
771 | /* | |
772 | * That's all for valid DOS partitions. We don't need a BSD label. | |
773 | * The openmask is only used for checking BSD partitions so we don't | |
774 | * need to maintain it. | |
775 | */ | |
776 | if (wddospart(dev)) { | |
777 | /* XXX we do need a disklabel for now. */ | |
778 | if ((du->dk_flags & DKFL_BSDLABEL) == 0) | |
779 | return (ENXIO); | |
780 | ||
781 | return (part > NDOSPART ? ENXIO : 0); | |
782 | } | |
15637ed4 | 783 | |
6d2dcc99 NW |
784 | while (du->dk_flags & DKFL_LABELLING) |
785 | tsleep((caddr_t)&du->dk_flags, PZERO - 1, "wdopen", 1); | |
15637ed4 | 786 | if ((du->dk_flags & DKFL_BSDLABEL) == 0) { |
4035d7c4 | 787 | /* |
80d17733 NW |
788 | * wdtab[ctrlr].b_active != 0 implies |
789 | * wdutab[lunit].b_actf == NULL (?) | |
6d2dcc99 NW |
790 | * so the following guards most things (until the next i/o). |
791 | * It doesn't guard against a new i/o starting and being | |
792 | * affected by the label being changed. Sigh. | |
4035d7c4 | 793 | */ |
6d2dcc99 NW |
794 | wdsleep(du->dk_ctrlr, "wdopn1"); |
795 | ||
796 | du->dk_flags |= DKFL_LABELLING | DKFL_WRITEPROT; | |
90af2aa0 | 797 | du->dk_state = WANTOPEN; |
6d2dcc99 | 798 | wdutab[lunit].b_actf = NULL; |
90af2aa0 | 799 | |
6d2dcc99 NW |
800 | /* |
801 | * Read label using WDRAW partition. | |
802 | * | |
803 | * If the drive has an MBR, then the current geometry (from | |
804 | * wdgetctlr()) is used to read it; then the BIOS/DOS | |
805 | * geometry is inferred and used to read the label off the | |
806 | * 'c' partition. Otherwise the label is read using the | |
807 | * current geometry. The label gives the final geometry. | |
808 | * If bad sector handling is enabled, then this geometry | |
809 | * is used to read the bad sector table. The geometry | |
810 | * changes occur inside readdisklabel() and are propagated | |
811 | * to the driver by resetting the state machine. | |
812 | */ | |
813 | save_label = du->dk_dd; | |
80d17733 | 814 | #define WDSTRATEGY ((int (*)(struct buf *)) wdstrategy) /* XXX */ |
6d2dcc99 | 815 | msg = readdisklabel(makewddev(major(dev), lunit, WDRAW), |
19fd9fc6 | 816 | (d_strategy_t *) WDSTRATEGY, &du->dk_dd, |
6d2dcc99 NW |
817 | du->dk_dospartitions, &du->dk_bad, |
818 | (struct buf **)NULL); | |
819 | du->dk_flags &= ~DKFL_LABELLING; | |
820 | if (msg != NULL) { | |
821 | du->dk_dd = save_label; | |
3419be7d | 822 | log(LOG_WARNING, "wd%d: cannot find label (%s)\n", |
6d2dcc99 | 823 | lunit, msg); |
3419be7d | 824 | if (part != WDRAW) |
6d2dcc99 | 825 | return (EINVAL); /* XXX needs translation */ |
15637ed4 | 826 | } else { |
80d17733 NW |
827 | int dospart; |
828 | unsigned long newsize, offset, size; | |
829 | ||
15637ed4 RG |
830 | du->dk_flags |= DKFL_BSDLABEL; |
831 | du->dk_flags &= ~DKFL_WRITEPROT; | |
832 | if (du->dk_dd.d_flags & D_BADSECT) | |
833 | du->dk_flags |= DKFL_BADSECT; | |
80d17733 NW |
834 | |
835 | /* | |
836 | * Force WDRAW partition to be the whole disk. | |
837 | */ | |
838 | offset = du->dk_dd.d_partitions[WDRAW].p_offset; | |
839 | if (offset != 0) { | |
840 | printf( | |
841 | "wd%d: changing offset of 'd' partition from %lu to 0\n", | |
842 | du->dk_lunit, offset); | |
843 | du->dk_dd.d_partitions[WDRAW].p_offset = 0; | |
844 | } | |
845 | size = du->dk_dd.d_partitions[WDRAW].p_size; | |
846 | newsize = du->dk_dd.d_secperunit; /* XXX */ | |
847 | if (size != newsize) { | |
848 | printf( | |
849 | "wd%d: changing size of 'd' partition from %lu to %lu\n", | |
850 | du->dk_lunit, size, newsize); | |
851 | du->dk_dd.d_partitions[WDRAW].p_size = newsize; | |
852 | } | |
853 | ||
854 | /* | |
855 | * Convert DOS partition data to a label. | |
856 | */ | |
857 | du->dk_dd2 = du->dk_dd; | |
858 | bzero(du->dk_dd2.d_partitions, | |
859 | sizeof du->dk_dd2.d_partitions); | |
860 | du->dk_dd2.d_partitions[0].p_size | |
861 | = du->dk_dd.d_secperunit; /* XXX */ | |
862 | for (dospart = 1; dospart <= NDOSPART; dospart++) { | |
863 | du->dk_dd2.d_partitions[dospart].p_offset = | |
864 | du->dk_dospartitions[dospart - 1].dp_start; | |
865 | du->dk_dd2.d_partitions[dospart].p_size = | |
866 | du->dk_dospartitions[dospart - 1].dp_size; | |
867 | } | |
15637ed4 RG |
868 | } |
869 | ||
6d2dcc99 NW |
870 | /* Pick up changes made by readdisklabel(). */ |
871 | wdsleep(du->dk_ctrlr, "wdopn2"); | |
872 | du->dk_state = WANTOPEN; | |
90af2aa0 | 873 | } |
6d2dcc99 NW |
874 | |
875 | /* | |
80d17733 NW |
876 | * Warn if a partion is opened that overlaps another partition which |
877 | * is open unless one is the "raw" partition (whole disk). | |
6d2dcc99 | 878 | */ |
80d17733 | 879 | if ((du->dk_openpart & mask) == 0 && part != WDRAW) { |
15637ed4 RG |
880 | int start, end; |
881 | ||
6d2dcc99 NW |
882 | pp = &du->dk_dd.d_partitions[part]; |
883 | start = pp->p_offset; | |
884 | end = pp->p_offset + pp->p_size; | |
885 | for (pp = du->dk_dd.d_partitions; | |
886 | pp < &du->dk_dd.d_partitions[du->dk_dd.d_npartitions]; | |
887 | pp++) { | |
888 | if (pp->p_offset + pp->p_size <= start || | |
80d17733 | 889 | pp->p_offset >= end) |
6d2dcc99 NW |
890 | continue; |
891 | if (pp - du->dk_dd.d_partitions == WDRAW) | |
892 | continue; | |
80d17733 NW |
893 | if (du->dk_openpart |
894 | & (1 << (pp - du->dk_dd.d_partitions))) | |
6d2dcc99 NW |
895 | log(LOG_WARNING, |
896 | "wd%d%c: overlaps open partition (%c)\n", | |
897 | lunit, part + 'a', | |
898 | pp - du->dk_dd.d_partitions + 'a'); | |
899 | } | |
900 | } | |
901 | if (part >= du->dk_dd.d_npartitions && part != WDRAW) | |
902 | return (ENXIO); | |
15637ed4 | 903 | |
6d2dcc99 NW |
904 | switch (fmt) { |
905 | case S_IFCHR: | |
906 | du->dk_copenpart |= mask; | |
907 | break; | |
908 | case S_IFBLK: | |
909 | du->dk_bopenpart |= mask; | |
910 | break; | |
911 | } | |
80d17733 NW |
912 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
913 | ||
15637ed4 RG |
914 | return (0); |
915 | } | |
916 | ||
917 | /* | |
918 | * Implement operations other than read/write. | |
919 | * Called from wdstart or wdintr during opens and formats. | |
920 | * Uses finite-state-machine to track progress of operation in progress. | |
921 | * Returns 0 if operation still in progress, 1 if completed. | |
922 | */ | |
923 | static int | |
924 | wdcontrol(register struct buf *bp) | |
925 | { | |
926 | register struct disk *du; | |
80d17733 | 927 | int ctrlr; |
15637ed4 RG |
928 | |
929 | du = wddrives[wdunit(bp->b_dev)]; | |
6d2dcc99 | 930 | ctrlr = du->dk_ctrlr; |
90af2aa0 | 931 | |
6d2dcc99 | 932 | switch (du->dk_state) { |
80d17733 | 933 | case WANTOPEN: |
6d2dcc99 NW |
934 | tryagainrecal: |
935 | wdtab[ctrlr].b_active = 1; | |
936 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0) { | |
937 | wderror(bp, du, "wdcontrol: wdcommand failed"); | |
938 | goto maybe_retry; | |
939 | } | |
940 | du->dk_state = RECAL; | |
80d17733 | 941 | return (0); |
15637ed4 | 942 | case RECAL: |
6d2dcc99 NW |
943 | if (du->dk_status & WDCS_ERR || wdsetctlr(du) != 0) { |
944 | wderror(bp, du, "wdcontrol: recal failed"); | |
945 | maybe_retry: | |
946 | if (du->dk_status & WDCS_ERR) | |
947 | wdunwedge(du); | |
80d17733 NW |
948 | du->dk_state = WANTOPEN; |
949 | if (++wdtab[ctrlr].b_errcnt < RETRIES) | |
15637ed4 | 950 | goto tryagainrecal; |
15637ed4 | 951 | bp->b_error = ENXIO; /* XXX needs translation */ |
6d2dcc99 | 952 | bp->b_flags |= B_ERROR; |
80d17733 | 953 | return (1); |
15637ed4 | 954 | } |
6d2dcc99 | 955 | wdtab[ctrlr].b_errcnt = 0; |
15637ed4 RG |
956 | du->dk_state = OPEN; |
957 | /* | |
80d17733 NW |
958 | * The rest of the initialization can be done by normal |
959 | * means. | |
15637ed4 | 960 | */ |
80d17733 | 961 | return (1); |
15637ed4 | 962 | } |
6d2dcc99 NW |
963 | panic("wdcontrol"); |
964 | return (1); | |
15637ed4 RG |
965 | } |
966 | ||
967 | /* | |
6d2dcc99 NW |
968 | * Wait uninterruptibly until controller is not busy, then send it a command. |
969 | * The wait usually terminates immediately because we waited for the previous | |
970 | * command to terminate. | |
15637ed4 RG |
971 | */ |
972 | static int | |
6d2dcc99 NW |
973 | wdcommand(struct disk *du, u_int cylinder, u_int head, u_int sector, |
974 | u_int count, u_int command) | |
58324b60 | 975 | { |
80d17733 | 976 | u_int wdc; |
15637ed4 | 977 | |
e0c9a25d | 978 | if (wdwait(du, 0, TIMEOUT) < 0) |
6d2dcc99 | 979 | return (1); |
15637ed4 | 980 | wdc = du->dk_port; |
6d2dcc99 NW |
981 | outb(wdc + wd_precomp, du->dk_dd.d_precompcyl / 4); |
982 | outb(wdc + wd_cyl_lo, cylinder); | |
983 | outb(wdc + wd_cyl_hi, cylinder >> 8); | |
80d17733 | 984 | outb(wdc + wd_sdh, WDSD_IBM | (du->dk_unit << 4) | head); |
6d2dcc99 NW |
985 | outb(wdc + wd_sector, sector + 1); |
986 | outb(wdc + wd_seccnt, count); | |
80d17733 | 987 | if (wdwait(du, command == WDCC_DIAGNOSE || command == WDCC_IDC |
e0c9a25d | 988 | ? 0 : WDCS_READY, TIMEOUT) < 0) |
80d17733 NW |
989 | return (1); |
990 | outb(wdc + wd_command, command); | |
6d2dcc99 | 991 | return (0); |
15637ed4 RG |
992 | } |
993 | ||
994 | /* | |
995 | * issue IDC to drive to tell it just what geometry it is to be. | |
996 | */ | |
997 | static int | |
6d2dcc99 NW |
998 | wdsetctlr(struct disk *du) |
999 | { | |
80d17733 NW |
1000 | #ifdef WDDEBUG |
1001 | printf("wd(%d,%d): wdsetctlr: C %lu H %lu S %lu\n", | |
1002 | du->dk_ctrlr, du->dk_unit, | |
1003 | du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks, | |
1004 | du->dk_dd.d_nsectors); | |
6d2dcc99 | 1005 | #endif |
80d17733 | 1006 | if (du->dk_dd.d_ntracks > 16) { |
eb30d5d6 | 1007 | printf("wd%d: cannot handle %lu heads (truncating to 16)\n", |
80d17733 | 1008 | du->dk_lunit, du->dk_dd.d_ntracks); |
eb30d5d6 | 1009 | du->dk_dd.d_ntracks = 16; |
80d17733 | 1010 | } |
6d2dcc99 NW |
1011 | if (wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0, |
1012 | du->dk_dd.d_nsectors, WDCC_IDC) != 0 | |
e0c9a25d | 1013 | || wdwait(du, WDCS_READY, TIMEOUT) != 0) { |
6d2dcc99 NW |
1014 | wderror((struct buf *)NULL, du, "wdsetctlr failed"); |
1015 | return (1); | |
1016 | } | |
1017 | return (0); | |
1018 | } | |
15637ed4 | 1019 | |
6d2dcc99 NW |
1020 | /* |
1021 | * Wait until driver is inactive, then set up controller. | |
1022 | */ | |
1023 | static int | |
1024 | wdwsetctlr(struct disk *du) | |
1025 | { | |
80d17733 NW |
1026 | int stat; |
1027 | int x; | |
15637ed4 | 1028 | |
6d2dcc99 | 1029 | wdsleep(du->dk_ctrlr, "wdwset"); |
15637ed4 | 1030 | x = splbio(); |
6d2dcc99 | 1031 | stat = wdsetctlr(du); |
80d17733 | 1032 | wdflushirq(du, x); |
15637ed4 | 1033 | splx(x); |
6d2dcc99 | 1034 | return (stat); |
15637ed4 RG |
1035 | } |
1036 | ||
1037 | /* | |
1038 | * issue READP to drive to ask it what it is. | |
1039 | */ | |
1040 | static int | |
80d17733 NW |
1041 | wdgetctlr(struct disk *du) |
1042 | { | |
1043 | int i; | |
1044 | char tb[DEV_BSIZE]; | |
15637ed4 RG |
1045 | struct wdparams *wp; |
1046 | ||
6d2dcc99 | 1047 | if (wdcommand(du, 0, 0, 0, 0, WDCC_READP) != 0 |
e0c9a25d | 1048 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) < 0) { |
80d17733 | 1049 | /* XXX need to check error status after final transfer. */ |
6d2dcc99 | 1050 | /* |
80d17733 NW |
1051 | * Old drives don't support WDCC_READP. Try a seek to 0. |
1052 | * Some IDE controllers return trash if there is no drive | |
1053 | * attached, so first test that the drive can be selected. | |
1054 | * This also avoids long waits for nonexistent drives. | |
6d2dcc99 | 1055 | */ |
e0c9a25d | 1056 | if (wdwait(du, 0, TIMEOUT) < 0) |
80d17733 NW |
1057 | return (1); |
1058 | outb(du->dk_port + wd_sdh, WDSD_IBM | (du->dk_unit << 4)); | |
1059 | DELAY(5000); /* usually unnecessary; drive select is fast */ | |
1060 | if ((inb(du->dk_port + wd_status) & (WDCS_BUSY | WDCS_READY)) | |
1061 | != WDCS_READY | |
1062 | || wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 | |
e0c9a25d | 1063 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) != 0) |
6d2dcc99 | 1064 | return (1); |
6d2dcc99 | 1065 | |
80d17733 NW |
1066 | /* |
1067 | * Fake minimal drive geometry for reading the MBR. | |
1068 | * readdisklabel() may enlarge it to read the label and the | |
1069 | * bad sector table. | |
1070 | */ | |
6d2dcc99 NW |
1071 | du->dk_dd.d_secsize = DEV_BSIZE; |
1072 | du->dk_dd.d_nsectors = 17; | |
1073 | du->dk_dd.d_ntracks = 1; | |
1074 | du->dk_dd.d_ncylinders = 1; | |
1075 | du->dk_dd.d_secpercyl = 17; | |
80d17733 NW |
1076 | du->dk_dd.d_secperunit = 17; |
1077 | ||
1078 | /* | |
1079 | * Fake maximal drive size for writing the label. | |
1080 | */ | |
1081 | du->dk_dd.d_partitions[WDRAW].p_size = 64 * 16 * 1024; | |
3419be7d | 1082 | |
6d2dcc99 NW |
1083 | /* |
1084 | * Fake some more of the label for printing by disklabel(1) | |
1085 | * in case there is no real label. | |
1086 | */ | |
1087 | du->dk_dd.d_type = DTYPE_ST506; | |
1088 | du->dk_dd.d_subtype |= DSTYPE_GEOMETRY; | |
1089 | strncpy(du->dk_dd.d_typename, "Fake geometry", | |
3419be7d | 1090 | sizeof du->dk_dd.d_typename); |
6d2dcc99 NW |
1091 | |
1092 | /* Fake the model name for printing by wdattach(). */ | |
80d17733 | 1093 | strncpy(du->dk_params.wdp_model, "unknown", |
3419be7d | 1094 | sizeof du->dk_params.wdp_model); |
6d2dcc99 NW |
1095 | |
1096 | return (0); | |
15637ed4 RG |
1097 | } |
1098 | ||
1099 | /* obtain parameters */ | |
1100 | wp = &du->dk_params; | |
80d17733 | 1101 | insw(du->dk_port + wd_data, tb, sizeof(tb) / sizeof(short)); |
15637ed4 RG |
1102 | bcopy(tb, wp, sizeof(struct wdparams)); |
1103 | ||
1104 | /* shuffle string byte order */ | |
80d17733 | 1105 | for (i = 0; i < sizeof(wp->wdp_model); i += 2) { |
15637ed4 | 1106 | u_short *p; |
80d17733 | 1107 | |
15637ed4 RG |
1108 | p = (u_short *) (wp->wdp_model + i); |
1109 | *p = ntohs(*p); | |
1110 | } | |
80d17733 | 1111 | #ifdef WDDEBUG |
6d2dcc99 | 1112 | printf( |
80d17733 NW |
1113 | "\nwd(%d,%d): wdgetctlr: gc %x cyl %d trk %d sec %d type %d sz %d model %s\n", |
1114 | du->dk_ctrlr, du->dk_unit, wp->wdp_config, | |
1115 | wp->wdp_fixedcyl + wp->wdp_removcyl, wp->wdp_heads, | |
1116 | wp->wdp_sectors, wp->wdp_cntype, wp->wdp_cnsbsz, | |
1117 | wp->wdp_model); | |
6d2dcc99 | 1118 | #endif |
15637ed4 RG |
1119 | |
1120 | /* update disklabel given drive information */ | |
6d2dcc99 | 1121 | du->dk_dd.d_secsize = DEV_BSIZE; |
80d17733 | 1122 | du->dk_dd.d_ncylinders = wp->wdp_fixedcyl + wp->wdp_removcyl /*+- 1*/ ; |
15637ed4 RG |
1123 | du->dk_dd.d_ntracks = wp->wdp_heads; |
1124 | du->dk_dd.d_nsectors = wp->wdp_sectors; | |
1125 | du->dk_dd.d_secpercyl = du->dk_dd.d_ntracks * du->dk_dd.d_nsectors; | |
80d17733 NW |
1126 | du->dk_dd.d_partitions[WDRAW].p_size = du->dk_dd.d_secperunit |
1127 | = du->dk_dd.d_secpercyl * du->dk_dd.d_ncylinders; | |
15637ed4 RG |
1128 | /* dubious ... */ |
1129 | bcopy("ESDI/IDE", du->dk_dd.d_typename, 9); | |
80d17733 | 1130 | bcopy(wp->wdp_model + 20, du->dk_dd.d_packname, 14 - 1); |
15637ed4 RG |
1131 | /* better ... */ |
1132 | du->dk_dd.d_type = DTYPE_ESDI; | |
1133 | du->dk_dd.d_subtype |= DSTYPE_GEOMETRY; | |
80d17733 | 1134 | |
15637ed4 RG |
1135 | return (0); |
1136 | } | |
1137 | ||
1138 | ||
1139 | /* ARGSUSED */ | |
1140 | int | |
1141 | wdclose(dev_t dev, int flags, int fmt) | |
1142 | { | |
1143 | register struct disk *du; | |
80d17733 NW |
1144 | int part = wdpart(dev), mask = 1 << part; |
1145 | ||
1146 | if (wddospart(dev)) | |
1147 | return (0); | |
15637ed4 RG |
1148 | |
1149 | du = wddrives[wdunit(dev)]; | |
1150 | ||
6d2dcc99 NW |
1151 | switch (fmt) { |
1152 | case S_IFCHR: | |
1153 | du->dk_copenpart &= ~mask; | |
1154 | break; | |
1155 | case S_IFBLK: | |
1156 | du->dk_bopenpart &= ~mask; | |
1157 | break; | |
1158 | } | |
80d17733 NW |
1159 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
1160 | ||
1161 | return (0); | |
15637ed4 RG |
1162 | } |
1163 | ||
1164 | int | |
1165 | wdioctl(dev_t dev, int cmd, caddr_t addr, int flag) | |
1166 | { | |
80d17733 | 1167 | int lunit = wdunit(dev); |
15637ed4 | 1168 | register struct disk *du; |
80d17733 | 1169 | int error = 0; |
6d2dcc99 | 1170 | #ifdef notyet |
15637ed4 RG |
1171 | struct uio auio; |
1172 | struct iovec aiov; | |
6d2dcc99 | 1173 | #endif |
15637ed4 | 1174 | |
6d2dcc99 | 1175 | du = wddrives[lunit]; |
15637ed4 RG |
1176 | |
1177 | switch (cmd) { | |
1178 | ||
1179 | case DIOCSBAD: | |
6d2dcc99 NW |
1180 | if ((flag & FWRITE) == 0) |
1181 | error = EBADF; | |
15637ed4 RG |
1182 | else |
1183 | du->dk_bad = *(struct dkbad *)addr; | |
1184 | break; | |
1185 | ||
1186 | case DIOCGDINFO: | |
1187 | *(struct disklabel *)addr = du->dk_dd; | |
1188 | break; | |
1189 | ||
6d2dcc99 | 1190 | case DIOCGPART: |
80d17733 NW |
1191 | if (wddospart(dev)) |
1192 | return (EINVAL); | |
6d2dcc99 NW |
1193 | ((struct partinfo *)addr)->disklab = &du->dk_dd; |
1194 | ((struct partinfo *)addr)->part = | |
1195 | &du->dk_dd.d_partitions[wdpart(dev)]; | |
1196 | break; | |
1197 | ||
1198 | case DIOCSDINFO: | |
1199 | if ((flag & FWRITE) == 0) | |
1200 | error = EBADF; | |
1201 | else | |
1202 | error = setdisklabel(&du->dk_dd, | |
80d17733 NW |
1203 | (struct disklabel *)addr, |
1204 | #if 0 | |
1205 | /* | |
1206 | * XXX setdisklabel() uses the | |
1207 | * openmask to allow it to reject | |
1208 | * changing open partitions. Why | |
1209 | * are we pretending nothing is | |
1210 | * open? | |
1211 | */ | |
1212 | du->dk_flags & DKFL_BSDLABEL | |
1213 | ? du->dk_openpart : | |
1214 | #endif | |
1215 | 0, | |
1216 | du->dk_dospartitions); | |
6d2dcc99 | 1217 | if (error == 0) { |
15637ed4 | 1218 | du->dk_flags |= DKFL_BSDLABEL; |
6d2dcc99 | 1219 | wdwsetctlr(du); /* XXX - check */ |
15637ed4 | 1220 | } |
6d2dcc99 | 1221 | break; |
15637ed4 | 1222 | |
6d2dcc99 | 1223 | case DIOCWLABEL: |
15637ed4 | 1224 | du->dk_flags &= ~DKFL_WRITEPROT; |
6d2dcc99 NW |
1225 | if ((flag & FWRITE) == 0) |
1226 | error = EBADF; | |
1227 | else | |
1228 | du->dk_wlabel = *(int *)addr; | |
1229 | break; | |
15637ed4 | 1230 | |
6d2dcc99 | 1231 | case DIOCWDINFO: |
15637ed4 | 1232 | du->dk_flags &= ~DKFL_WRITEPROT; |
6d2dcc99 NW |
1233 | if ((flag & FWRITE) == 0) |
1234 | error = EBADF; | |
80d17733 NW |
1235 | else if ((error = setdisklabel(&du->dk_dd, |
1236 | (struct disklabel *)addr, | |
1237 | #if 0 | |
1238 | du->dk_flags & DKFL_BSDLABEL | |
1239 | ? du->dk_openpart : | |
1240 | #endif | |
1241 | 0, | |
1242 | du->dk_dospartitions)) == 0) { | |
1243 | int wlab; | |
15637ed4 RG |
1244 | |
1245 | du->dk_flags |= DKFL_BSDLABEL; | |
80d17733 | 1246 | wdwsetctlr(du); /* XXX - check */ |
15637ed4 | 1247 | |
6d2dcc99 NW |
1248 | /* simulate opening partition 0 so write succeeds */ |
1249 | du->dk_openpart |= (1 << 0); /* XXX */ | |
1250 | wlab = du->dk_wlabel; | |
1251 | du->dk_wlabel = 1; | |
19fd9fc6 AS |
1252 | error = writedisklabel(dev, (d_strategy_t *) WDSTRATEGY, |
1253 | &du->dk_dd, du->dk_dospartitions); | |
6d2dcc99 NW |
1254 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
1255 | du->dk_wlabel = wlab; | |
1256 | } | |
1257 | break; | |
15637ed4 RG |
1258 | |
1259 | #ifdef notyet | |
1260 | case DIOCGDINFOP: | |
1261 | *(struct disklabel **)addr = &(du->dk_dd); | |
1262 | break; | |
1263 | ||
1264 | case DIOCWFORMAT: | |
1265 | if ((flag & FWRITE) == 0) | |
1266 | error = EBADF; | |
1267 | else { | |
1268 | register struct format_op *fop; | |
1269 | ||
1270 | fop = (struct format_op *)addr; | |
1271 | aiov.iov_base = fop->df_buf; | |
1272 | aiov.iov_len = fop->df_count; | |
1273 | auio.uio_iov = &aiov; | |
1274 | auio.uio_iovcnt = 1; | |
1275 | auio.uio_resid = fop->df_count; | |
1276 | auio.uio_segflg = 0; | |
1277 | auio.uio_offset = | |
80d17733 NW |
1278 | fop->df_startblk * du->dk_dd.d_secsize; |
1279 | #error /* XXX the 386BSD interface is different */ | |
1280 | error = physio(wdformat, &rwdbuf[lunit], 0, dev, | |
1281 | B_WRITE, minphys, &auio); | |
15637ed4 RG |
1282 | fop->df_count -= auio.uio_resid; |
1283 | fop->df_reg[0] = du->dk_status; | |
1284 | fop->df_reg[1] = du->dk_error; | |
1285 | } | |
1286 | break; | |
1287 | #endif | |
1288 | ||
1289 | default: | |
1290 | error = ENOTTY; | |
1291 | break; | |
1292 | } | |
1293 | return (error); | |
1294 | } | |
1295 | ||
80d17733 | 1296 | #ifdef B_FORMAT |
15637ed4 RG |
1297 | int |
1298 | wdformat(struct buf *bp) | |
1299 | { | |
1300 | ||
1301 | bp->b_flags |= B_FORMAT; | |
1302 | return (wdstrategy(bp)); | |
1303 | } | |
1304 | #endif | |
1305 | ||
1306 | int | |
1307 | wdsize(dev_t dev) | |
1308 | { | |
80d17733 | 1309 | int lunit = wdunit(dev), part = wdpart(dev), val; |
15637ed4 RG |
1310 | struct disk *du; |
1311 | ||
80d17733 NW |
1312 | if (lunit >= NWD || wddospart(dev) || (du = wddrives[lunit]) == NULL) |
1313 | return (-1); | |
6d2dcc99 | 1314 | val = 0; |
80d17733 NW |
1315 | if (du->dk_state == CLOSED) |
1316 | val = wdopen(makewddev(major(dev), lunit, WDRAW), | |
1317 | FREAD, S_IFBLK, 0); | |
1318 | if (val != 0 || du->dk_flags & DKFL_WRITEPROT) | |
15637ed4 | 1319 | return (-1); |
80d17733 | 1320 | return ((int)du->dk_dd.d_partitions[part].p_size); |
15637ed4 RG |
1321 | } |
1322 | ||
80d17733 | 1323 | extern char *vmmap; /* poor name! */ |
15637ed4 | 1324 | |
80d17733 NW |
1325 | /* |
1326 | * Dump core after a system crash. | |
1327 | */ | |
15637ed4 | 1328 | int |
80d17733 | 1329 | wddump(dev_t dev) |
15637ed4 | 1330 | { |
80d17733 | 1331 | register struct disk *du; |
15637ed4 | 1332 | register struct bt_bad *bt_ptr; |
80d17733 NW |
1333 | struct disklabel *lp; |
1334 | long num; /* number of sectors to write */ | |
1335 | int lunit, part; | |
6d2dcc99 | 1336 | long blkoff, blknum; |
80d17733 | 1337 | long blkchk, blkcnt, blknext; |
6d2dcc99 | 1338 | long cylin, head, sector; |
80d17733 NW |
1339 | long secpertrk, secpercyl, nblocks; |
1340 | char *addr; | |
1341 | extern int Maxmem; | |
1342 | static int wddoingadump = 0; | |
15637ed4 RG |
1343 | extern caddr_t CADDR1; |
1344 | ||
80d17733 | 1345 | /* Toss any characters present prior to dump. */ |
146a55b3 | 1346 | while (sgetc(1)) |
15637ed4 RG |
1347 | ; |
1348 | ||
80d17733 NW |
1349 | /* Check for acceptable device. */ |
1350 | /* XXX should reset to maybe allow du->dk_state < OPEN. */ | |
1351 | lunit = wdunit(dev); /* eventually support floppies? */ | |
1352 | part = wdpart(dev); | |
1353 | if (lunit >= NWD || wddospart(dev) || (du = wddrives[lunit]) == NULL | |
1354 | || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT) | |
1355 | return (ENXIO); | |
15637ed4 | 1356 | |
80d17733 NW |
1357 | /* Size of memory to dump, in disk sectors. */ |
1358 | num = (u_long)Maxmem * NBPG / du->dk_dd.d_secsize; | |
15637ed4 RG |
1359 | |
1360 | secpertrk = du->dk_dd.d_nsectors; | |
1361 | secpercyl = du->dk_dd.d_secpercyl; | |
1362 | nblocks = du->dk_dd.d_partitions[part].p_size; | |
1363 | blkoff = du->dk_dd.d_partitions[part].p_offset; | |
1364 | ||
80d17733 NW |
1365 | #if 0 |
1366 | pg("part %x, nblocks %d, dumplo %d num %d\n", | |
1367 | part, nblocks, dumplo, num); | |
1368 | #endif | |
1369 | ||
1370 | /* Check transfer bounds against partition size. */ | |
1371 | if (dumplo < 0 || dumplo + num > nblocks) | |
1372 | return (EINVAL); | |
1373 | ||
1374 | /* Check if we are being called recursively. */ | |
1375 | if (wddoingadump) | |
1376 | return (EFAULT); | |
15637ed4 | 1377 | |
6d2dcc99 | 1378 | #if 0 |
80d17733 NW |
1379 | /* Mark controller active for if we panic during the dump. */ |
1380 | wdtab[du->dk_ctrlr].b_active = 1; | |
6d2dcc99 | 1381 | #endif |
80d17733 NW |
1382 | wddoingadump = 1; |
1383 | ||
1384 | /* Recalibrate the drive. */ | |
1385 | DELAY(5); /* ATA spec XXX NOT */ | |
1386 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 | |
e0c9a25d | 1387 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) != 0 |
80d17733 NW |
1388 | || wdsetctlr(du) != 0) { |
1389 | wderror((struct buf *)NULL, du, "wddump: recalibrate failed"); | |
1390 | return (EIO); | |
1391 | } | |
6d2dcc99 | 1392 | |
80d17733 NW |
1393 | du->dk_flags |= DKFL_SINGLE; |
1394 | addr = (char *) 0; | |
15637ed4 RG |
1395 | blknum = dumplo + blkoff; |
1396 | while (num > 0) { | |
80d17733 NW |
1397 | blkcnt = num; |
1398 | if (blkcnt > MAXTRANSFER) | |
1399 | blkcnt = MAXTRANSFER; | |
1400 | /* Keep transfer within current cylinder. */ | |
15637ed4 RG |
1401 | if ((blknum + blkcnt - 1) / secpercyl != blknum / secpercyl) |
1402 | blkcnt = secpercyl - (blknum % secpercyl); | |
80d17733 | 1403 | blknext = blknum + blkcnt; |
15637ed4 | 1404 | |
15637ed4 | 1405 | /* |
80d17733 NW |
1406 | * See if one of the sectors is in the bad sector list |
1407 | * (if we have one). If the first sector is bad, then | |
1408 | * reduce the transfer to this one bad sector; if another | |
1409 | * sector is bad, then reduce reduce the transfer to | |
1410 | * avoid any bad sectors. | |
15637ed4 | 1411 | */ |
80d17733 NW |
1412 | if ((du->dk_flags & (DKFL_SINGLE | DKFL_BADSECT)) |
1413 | == (DKFL_SINGLE | DKFL_BADSECT)) | |
1414 | for (blkchk = blknum; blkchk < blknum + blkcnt; blkchk++) { | |
1415 | cylin = blkchk / secpercyl; | |
1416 | head = (blkchk % secpercyl) / secpertrk; | |
1417 | sector = blkchk % secpertrk; | |
1418 | for (bt_ptr = du->dk_bad.bt_bad; | |
1419 | bt_ptr->bt_cyl != BAD144_NO_CYL; bt_ptr++) { | |
15637ed4 | 1420 | if (bt_ptr->bt_cyl > cylin) |
80d17733 NW |
1421 | /* |
1422 | * Sorted list, and we passed our cylinder. | |
1423 | * quit. | |
1424 | */ | |
15637ed4 RG |
1425 | break; |
1426 | if (bt_ptr->bt_cyl == cylin && | |
80d17733 NW |
1427 | bt_ptr->bt_trksec == (head << 8) + sector) { |
1428 | /* Found bad block. */ | |
1429 | blkcnt = blkchk - blknum; | |
1430 | if (blkcnt > 0) { | |
1431 | blknext = blknum + blkcnt; | |
1432 | goto out; | |
1433 | } | |
1434 | blkcnt = 1; | |
1435 | blknext = blknum + blkcnt; | |
15637ed4 | 1436 | /* |
80d17733 | 1437 | * Found bad block. Calculate new block number. |
15637ed4 RG |
1438 | * This starts at the end of the disk (skip the |
1439 | * last track which is used for the bad block list), | |
1440 | * and works backwards to the front of the disk. | |
1441 | */ | |
80d17733 NW |
1442 | /* XXX as usual. */ |
1443 | #ifdef WDDEBUG | |
1444 | printf("--- badblock code -> Old = %ld; ", | |
1445 | blknum); | |
1446 | #endif | |
1447 | lp = &du->dk_dd; | |
6d2dcc99 NW |
1448 | if (lp->d_partitions[BSD_PART].p_offset != 0) |
1449 | blknum = lp->d_partitions[BAD144_PART] | |
1450 | .p_offset | |
1451 | + lp->d_partitions[BAD144_PART] | |
1452 | .p_size; | |
1453 | else | |
1454 | blknum = lp->d_secperunit; | |
80d17733 | 1455 | blknum -= lp->d_nsectors |
6d2dcc99 | 1456 | + (bt_ptr - du->dk_bad.bt_bad) + 1; |
80d17733 NW |
1457 | #ifdef WDDEBUG |
1458 | printf("new = %ld\n", blknum); | |
1459 | #endif | |
15637ed4 RG |
1460 | break; |
1461 | } | |
80d17733 NW |
1462 | } |
1463 | } | |
1464 | out: | |
1465 | ||
1466 | /* Compute disk address. */ | |
1467 | cylin = blknum / secpercyl; | |
1468 | head = (blknum % secpercyl) / secpertrk; | |
1469 | sector = blknum % secpertrk; | |
6d2dcc99 | 1470 | |
80d17733 NW |
1471 | #if 0 |
1472 | /* Let's just talk about this first... */ | |
1473 | pg("cylin l%d head %ld sector %ld addr 0x%x count %ld", | |
1474 | cylin, head, sector, addr, blkcnt); | |
1475 | #endif | |
15637ed4 | 1476 | |
80d17733 NW |
1477 | /* Do the write. */ |
1478 | if (wdcommand(du, cylin, head, sector, blkcnt, WDCC_WRITE) | |
1479 | != 0) { | |
1480 | wderror((struct buf *)NULL, du, | |
1481 | "wddump: timeout waiting to to give command"); | |
1482 | return (EIO); | |
1483 | } | |
1484 | while (blkcnt != 0) { | |
1485 | pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), | |
1486 | VM_PROT_READ, TRUE); | |
1487 | ||
1488 | /* Ready to send data? */ | |
1489 | DELAY(5); /* ATA spec */ | |
e0c9a25d | 1490 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ, TIMEOUT) |
80d17733 NW |
1491 | < 0) { |
1492 | wderror((struct buf *)NULL, du, | |
1493 | "wddump: timeout waiting for DRQ"); | |
1494 | return (EIO); | |
1495 | } | |
1496 | outsw(du->dk_port + wd_data, | |
1497 | CADDR1 + ((int)addr & (NBPG - 1)), | |
1498 | DEV_BSIZE / sizeof(short)); | |
1499 | addr += DEV_BSIZE; | |
1500 | if ((unsigned)addr % (1024 * 1024) == 0) | |
1501 | printf("%ld ", num / (1024 * 1024 / DEV_BSIZE)); | |
1502 | num--; | |
1503 | blkcnt--; | |
1504 | } | |
15637ed4 | 1505 | |
80d17733 NW |
1506 | /* Wait for completion. */ |
1507 | DELAY(5); /* ATA spec XXX NOT */ | |
e0c9a25d | 1508 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) < 0) { |
80d17733 NW |
1509 | wderror((struct buf *)NULL, du, |
1510 | "wddump: timeout waiting for status"); | |
1511 | return (EIO); | |
1512 | } | |
15637ed4 | 1513 | |
80d17733 NW |
1514 | /* Check final status. */ |
1515 | if (du->dk_status | |
1516 | & (WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ | WDCS_ERR) | |
1517 | != (WDCS_READY | WDCS_SEEKCMPLT)) { | |
1518 | wderror((struct buf *)NULL, du, | |
1519 | "wddump: extra DRQ, or error"); | |
1520 | return (EIO); | |
15637ed4 | 1521 | } |
80d17733 NW |
1522 | |
1523 | /* Update block count. */ | |
1524 | blknum = blknext; | |
1525 | ||
1526 | /* Operator aborting dump? */ | |
1527 | if (sgetc(1) & 0xff) /* EWS: A hack to work with syscons */ | |
1528 | return (EINTR); | |
15637ed4 | 1529 | } |
80d17733 | 1530 | return (0); |
15637ed4 | 1531 | } |
6d2dcc99 NW |
1532 | |
1533 | static void | |
1534 | wderror(struct buf *bp, struct disk *du, char *mesg) | |
1535 | { | |
1536 | if (bp == NULL) | |
eb30d5d6 | 1537 | printf("wd%d: %s:\n", du->dk_lunit, mesg); |
6d2dcc99 NW |
1538 | else |
1539 | diskerr(bp, "wd", mesg, LOG_PRINTF, du->dk_skip, &du->dk_dd); | |
eb30d5d6 | 1540 | printf("wd%d: status %b error %b\n", du->dk_lunit, |
80d17733 NW |
1541 | du->dk_status, WDCS_BITS, du->dk_error, WDERR_BITS); |
1542 | } | |
1543 | ||
1544 | /* | |
1545 | * Discard any interrupts that were latched by the interrupt system while | |
1546 | * we were doing polled i/o. | |
1547 | */ | |
1548 | static void | |
1549 | wdflushirq(struct disk *du, int old_ipl) | |
1550 | { | |
1551 | wdtab[du->dk_ctrlr].b_active = 2; | |
1552 | splx(old_ipl); | |
1553 | (void)splbio(); | |
1554 | wdtab[du->dk_ctrlr].b_active = 0; | |
6d2dcc99 NW |
1555 | } |
1556 | ||
1557 | /* | |
1558 | * Reset the controller. | |
1559 | */ | |
1560 | static int | |
1561 | wdreset(struct disk *du) | |
1562 | { | |
80d17733 | 1563 | int wdc; |
6d2dcc99 NW |
1564 | |
1565 | wdc = du->dk_port; | |
e0c9a25d | 1566 | (void)wdwait(du, 0, TIMEOUT); |
6d2dcc99 NW |
1567 | outb(wdc + wd_ctlr, WDCTL_IDS | WDCTL_RST); |
1568 | DELAY(10 * 1000); | |
1569 | outb(wdc + wd_ctlr, WDCTL_IDS); | |
e0c9a25d | 1570 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) != 0 |
6d2dcc99 NW |
1571 | || (du->dk_error = inb(wdc + wd_error)) != 0x01) |
1572 | return (1); | |
1573 | outb(wdc + wd_ctlr, WDCTL_4BIT); | |
1574 | return (0); | |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | * Sleep until driver is inactive. | |
1579 | * This is used only for avoiding rare race conditions, so it is unimportant | |
1580 | * that the sleep may be far too short or too long. | |
1581 | */ | |
1582 | static void | |
1583 | wdsleep(int ctrlr, char *wmesg) | |
1584 | { | |
1585 | while (wdtab[ctrlr].b_active) | |
1586 | tsleep((caddr_t)&wdtab[ctrlr].b_active, PZERO - 1, wmesg, 1); | |
1587 | } | |
1588 | ||
19fd9fc6 | 1589 | static void |
80d17733 NW |
1590 | wdtimeout(caddr_t cdu, int ticks) |
1591 | { | |
1592 | struct disk *du; | |
1593 | int x; | |
1594 | ||
1595 | du = (struct disk *)cdu; | |
1596 | x = splbio(); | |
1597 | if (du->dk_timeout != 0 && --du->dk_timeout == 0) { | |
1598 | wderror((struct buf *)NULL, du, "interrupt timeout"); | |
1599 | wdunwedge(du); | |
1600 | wdflushirq(du, x); | |
1601 | du->dk_skip = 0; | |
1602 | du->dk_flags |= DKFL_SINGLE; | |
1603 | wdstart(du->dk_ctrlr); | |
1604 | } | |
1605 | timeout(wdtimeout, cdu, hz); | |
1606 | splx(x); | |
80d17733 NW |
1607 | } |
1608 | ||
6d2dcc99 NW |
1609 | /* |
1610 | * Reset the controller after it has become wedged. This is different from | |
1611 | * wdreset() so that wdreset() can be used in the probe and so that this | |
1612 | * can restore the geometry . | |
1613 | */ | |
1614 | static int | |
1615 | wdunwedge(struct disk *du) | |
1616 | { | |
1617 | struct disk *du1; | |
80d17733 | 1618 | int lunit; |
6d2dcc99 NW |
1619 | |
1620 | /* Schedule other drives for recalibration. */ | |
1621 | for (lunit = 0; lunit < NWD; lunit++) | |
1622 | if ((du1 = wddrives[lunit]) != NULL && du1 != du | |
1623 | && du1->dk_ctrlr == du->dk_ctrlr | |
1624 | && du1->dk_state > WANTOPEN) | |
1625 | du1->dk_state = WANTOPEN; | |
1626 | ||
1627 | DELAY(RECOVERYTIME); | |
1628 | if (wdreset(du) == 0) { | |
1629 | /* | |
1630 | * XXX - recalibrate current drive now because some callers | |
1631 | * aren't prepared to have its state change. | |
1632 | */ | |
1633 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) == 0 | |
e0c9a25d | 1634 | && wdwait(du, WDCS_READY | WDCS_SEEKCMPLT, TIMEOUT) == 0 |
6d2dcc99 NW |
1635 | && wdsetctlr(du) == 0) |
1636 | return (0); | |
1637 | } | |
1638 | wderror((struct buf *)NULL, du, "wdunwedge failed"); | |
1639 | return (1); | |
1640 | } | |
1641 | ||
1642 | /* | |
1643 | * Wait uninterruptibly until controller is not busy and either certain | |
1644 | * status bits are set or an error has occurred. | |
1645 | * The wait is usually short unless it is for the controller to process | |
1646 | * an entire critical command. | |
1647 | * Return 1 for (possibly stale) controller errors, -1 for timeout errors, | |
1648 | * or 0 for no errors. | |
1649 | * Return controller status in du->dk_status and, if there was a controller | |
1650 | * error, return the error code in du->dk_error. | |
1651 | */ | |
80d17733 | 1652 | #ifdef WD_COUNT_RETRIES |
6d2dcc99 | 1653 | static int min_retries[NWDC]; |
80d17733 NW |
1654 | #endif |
1655 | ||
6d2dcc99 | 1656 | static int |
e0c9a25d | 1657 | wdwait(struct disk *du, u_char bits_wanted, int timeout) |
6d2dcc99 | 1658 | { |
80d17733 NW |
1659 | int wdc; |
1660 | u_char status; | |
1661 | ||
6d2dcc99 | 1662 | #define POLLING 1000 |
6d2dcc99 NW |
1663 | |
1664 | wdc = du->dk_port; | |
e0c9a25d | 1665 | timeout += POLLING; |
6d2dcc99 | 1666 | do { |
80d17733 | 1667 | #ifdef WD_COUNT_RETRIES |
e0c9a25d | 1668 | if (min_retries[du->dk_ctrlr] > timeout |
80d17733 | 1669 | || min_retries[du->dk_ctrlr] == 0) |
e0c9a25d | 1670 | min_retries[du->dk_ctrlr] = timeout; |
80d17733 NW |
1671 | #endif |
1672 | DELAY(5); /* ATA spec XXX NOT */ | |
6d2dcc99 NW |
1673 | du->dk_status = status = inb(wdc + wd_status); |
1674 | if (!(status & WDCS_BUSY)) { | |
1675 | if (status & WDCS_ERR) { | |
1676 | du->dk_error = inb(wdc + wd_error); | |
1677 | /* | |
1678 | * We once returned here. This is wrong | |
1679 | * because the error bit is apparently only | |
1680 | * valid after the controller has interrupted | |
1681 | * (e.g., the error bit is stale when we wait | |
1682 | * for DRQ for writes). So we can't depend | |
1683 | * on the error bit at all when polling for | |
1684 | * command completion. | |
1685 | */ | |
1686 | } | |
1687 | if ((status & bits_wanted) == bits_wanted) | |
1688 | return (status & WDCS_ERR); | |
1689 | } | |
e0c9a25d | 1690 | if (timeout < TIMEOUT) |
6d2dcc99 NW |
1691 | /* |
1692 | * Switch to a polling rate of about 1 KHz so that | |
1693 | * the timeout is almost machine-independent. The | |
1694 | * controller is taking a long time to respond, so | |
1695 | * an extra msec won't matter. | |
1696 | */ | |
1697 | DELAY(1000); | |
e0c9a25d | 1698 | } while (--timeout != 0); |
6d2dcc99 NW |
1699 | return (-1); |
1700 | } | |
1701 | ||
80d17733 | 1702 | #endif /* NWDC > 0 */ |