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 NW |
39 | * from: @(#)wd.c 7.2 (Berkeley) 5/9/91 |
40 | * $Id: wd.c,v 1.11 1993/10/16 13:46:31 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 | ||
15637ed4 | 87 | #ifndef WDCTIMEOUT |
4f55eff0 | 88 | #define WDCTIMEOUT 10000000 /* arbitrary timeout for drive ready waits */ |
15637ed4 RG |
89 | #endif |
90 | ||
91 | #define RETRIES 5 /* number of retries before giving up */ | |
6d2dcc99 | 92 | #define RECOVERYTIME 500000 /* usec for controller to recover after err */ |
80d17733 | 93 | #define MAXTRANSFER 256 /* max size of transfer in sectors */ |
15637ed4 | 94 | |
80d17733 | 95 | #ifdef notyet |
15637ed4 | 96 | #define wdnoreloc(dev) (minor(dev) & 0x80) /* ignore partition table */ |
80d17733 | 97 | #endif |
15637ed4 RG |
98 | #define wddospart(dev) (minor(dev) & 0x40) /* use dos partitions */ |
99 | #define wdunit(dev) ((minor(dev) & 0x38) >> 3) | |
100 | #define wdpart(dev) (minor(dev) & 0x7) | |
101 | #define makewddev(maj, unit, part) (makedev(maj,((unit<<3)+part))) | |
102 | #define WDRAW 3 /* 'd' partition isn't a partition! */ | |
103 | ||
80d17733 NW |
104 | /* Cylinder number for doing IO to. Shares an entry in the buf struct. */ |
105 | #define b_cylin b_resid | |
15637ed4 | 106 | |
80d17733 NW |
107 | /* |
108 | * This biotab field doubles as a field for the physical unit number on | |
109 | * the controller. | |
110 | */ | |
111 | #define id_physid id_scsiid | |
6d2dcc99 | 112 | |
15637ed4 RG |
113 | /* |
114 | * Drive states. Used to initialize drive. | |
115 | */ | |
116 | ||
80d17733 NW |
117 | #define CLOSED 0 /* disk is closed. */ |
118 | #define WANTOPEN 1 /* open requested, not started */ | |
119 | #define RECAL 2 /* doing restore */ | |
120 | #define OPEN 3 /* done with open */ | |
15637ed4 RG |
121 | |
122 | /* | |
123 | * The structure of a disk drive. | |
124 | */ | |
80d17733 | 125 | struct disk { |
15637ed4 RG |
126 | long dk_bc; /* byte count left */ |
127 | short dk_skip; /* blocks already transferred */ | |
6d2dcc99 | 128 | char dk_ctrlr; /* physical controller number */ |
15637ed4 | 129 | char dk_unit; /* physical unit number */ |
6d2dcc99 | 130 | char dk_lunit; /* logical unit number */ |
15637ed4 RG |
131 | char dk_state; /* control state */ |
132 | u_char dk_status; /* copy of status reg. */ | |
133 | u_char dk_error; /* copy of error reg. */ | |
80d17733 | 134 | u_char dk_timeout; /* countdown to next timeout */ |
15637ed4 | 135 | short dk_port; /* i/o port base */ |
6d2dcc99 | 136 | |
80d17733 NW |
137 | u_long dk_copenpart; /* character units open on this drive */ |
138 | u_long dk_bopenpart; /* block units open on this drive */ | |
139 | u_long dk_openpart; /* all units open on this drive */ | |
15637ed4 RG |
140 | short dk_wlabel; /* label writable? */ |
141 | short dk_flags; /* drive characteistics found */ | |
80d17733 NW |
142 | #define DKFL_DOSPART 0x00001 /* has DOS partition table */ |
143 | #define DKFL_SINGLE 0x00004 /* sector at a time mode */ | |
144 | #define DKFL_ERROR 0x00008 /* processing a disk error */ | |
145 | #define DKFL_BSDLABEL 0x00010 /* has a BSD disk label */ | |
146 | #define DKFL_BADSECT 0x00020 /* has a bad144 badsector table */ | |
147 | #define DKFL_WRITEPROT 0x00040 /* manual unit write protect */ | |
148 | #define DKFL_LABELLING 0x00080 /* readdisklabel() in progress */ | |
15637ed4 RG |
149 | struct wdparams dk_params; /* ESDI/IDE drive/controller parameters */ |
150 | struct disklabel dk_dd; /* device configuration data */ | |
80d17733 NW |
151 | struct disklabel dk_dd2; /* DOS view converted to label */ |
152 | struct dos_partition | |
15637ed4 | 153 | dk_dospartitions[NDOSPART]; /* DOS view of disk */ |
80d17733 | 154 | struct dkbad dk_bad; /* bad sector table */ |
15637ed4 RG |
155 | }; |
156 | ||
80d17733 NW |
157 | static struct disk *wddrives[NWD]; /* table of units */ |
158 | static struct buf wdtab[NWDC]; | |
159 | static struct buf wdutab[NWD]; /* head of queue per drive */ | |
6d2dcc99 | 160 | #ifdef notyet |
80d17733 | 161 | static struct buf rwdbuf[NWD]; /* buffers for raw IO */ |
15637ed4 | 162 | #endif |
80d17733 NW |
163 | static long wdxfer[NWD]; /* count of transfers */ |
164 | ||
165 | static int wdprobe(struct isa_device *dvp); | |
166 | static int wdattach(struct isa_device *dvp); | |
167 | static void wdustart(struct disk *du); | |
168 | static void wdstart(int ctrlr); | |
169 | static int wdcontrol(struct buf *bp); | |
170 | static int wdcommand(struct disk *du, u_int cylinder, u_int head, | |
171 | u_int sector, u_int count, u_int command); | |
172 | static int wdsetctlr(struct disk *du); | |
173 | static int wdwsetctlr(struct disk *du); | |
174 | static int wdgetctlr(struct disk *du); | |
175 | static void wderror(struct buf *bp, struct disk *du, char *mesg); | |
176 | static void wdflushirq(struct disk *du, int old_ipl); | |
177 | static int wdreset(struct disk *du); | |
178 | static void wdsleep(int ctrlr, char *wmesg); | |
179 | static int wdtimeout(caddr_t cdu, int ticks); | |
180 | static int wdunwedge(struct disk *du); | |
181 | static int wdwait(struct disk *du, u_char bits_wanted); | |
182 | ||
183 | struct isa_driver wdcdriver = { | |
6d2dcc99 | 184 | wdprobe, wdattach, "wdc", |
15637ed4 RG |
185 | }; |
186 | ||
15637ed4 RG |
187 | /* |
188 | * Probe for controller. | |
189 | */ | |
6d2dcc99 | 190 | static int |
15637ed4 RG |
191 | wdprobe(struct isa_device *dvp) |
192 | { | |
80d17733 | 193 | int unit = dvp->id_unit; |
15637ed4 | 194 | struct disk *du; |
15637ed4 | 195 | |
80d17733 NW |
196 | if (unit >= NWDC) |
197 | return (0); | |
198 | du = malloc(sizeof *du, M_TEMP, M_NOWAIT); | |
199 | if (du == NULL) | |
200 | return (0); | |
201 | bzero(du, sizeof *du); | |
6d2dcc99 | 202 | du->dk_ctrlr = dvp->id_unit; |
80d17733 | 203 | du->dk_port = dvp->id_iobase; |
6d2dcc99 | 204 | |
15637ed4 | 205 | /* check if we have registers that work */ |
80d17733 NW |
206 | outb(du->dk_port + wd_cyl_lo, 0xa5); /* wd_cyl_lo is read/write */ |
207 | if (inb(du->dk_port + wd_cyl_lo) != 0xa5) | |
15637ed4 RG |
208 | goto nodevice; |
209 | ||
6d2dcc99 NW |
210 | if (wdreset(du) != 0 && (DELAY(RECOVERYTIME), wdreset(du)) != 0) |
211 | goto nodevice; | |
15637ed4 RG |
212 | |
213 | /* execute a controller only command */ | |
6d2dcc99 NW |
214 | if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) != 0 |
215 | || wdwait(du, 0) != 0) | |
15637ed4 RG |
216 | goto nodevice; |
217 | ||
6d2dcc99 | 218 | free(du, M_TEMP); |
7530c2f0 | 219 | return (IO_WDCSIZE); |
15637ed4 RG |
220 | |
221 | nodevice: | |
222 | free(du, M_TEMP); | |
15637ed4 RG |
223 | return (0); |
224 | } | |
225 | ||
226 | /* | |
227 | * Attach each drive if possible. | |
228 | */ | |
6d2dcc99 | 229 | static int |
15637ed4 RG |
230 | wdattach(struct isa_device *dvp) |
231 | { | |
80d17733 | 232 | int unit, lunit; |
6d2dcc99 NW |
233 | struct isa_device *wdup; |
234 | struct disk *du; | |
235 | ||
236 | if (dvp->id_unit >= NWDC) | |
80d17733 | 237 | return (0); |
6d2dcc99 NW |
238 | |
239 | for (wdup = isa_biotab_wdc; wdup->id_driver != 0; wdup++) { | |
240 | if (wdup->id_iobase != dvp->id_iobase) | |
241 | continue; | |
242 | lunit = wdup->id_unit; | |
243 | if (lunit >= NWD) | |
244 | continue; | |
245 | unit = wdup->id_physid; | |
246 | ||
80d17733 NW |
247 | du = malloc(sizeof *du, M_TEMP, M_NOWAIT); |
248 | if (du == NULL) | |
249 | continue; | |
250 | if (wddrives[lunit] != NULL) | |
251 | panic("drive attached twice"); | |
252 | wddrives[lunit] = du; | |
253 | bzero(du, sizeof *du); | |
6d2dcc99 NW |
254 | du->dk_ctrlr = dvp->id_unit; |
255 | du->dk_unit = unit; | |
256 | du->dk_lunit = lunit; | |
257 | du->dk_port = dvp->id_iobase; | |
15637ed4 | 258 | |
80d17733 NW |
259 | /* |
260 | * Print out description of drive, suppressing multiple | |
261 | * blanks. | |
262 | */ | |
263 | if (wdgetctlr(du) == 0) { | |
264 | int i, blank; | |
6d2dcc99 | 265 | |
80d17733 NW |
266 | printf("wdc%d: unit %d (wd%d): ", |
267 | dvp->id_unit, unit, lunit); | |
268 | if (du->dk_params.wdp_heads == 0) | |
269 | printf("size unknown"); | |
270 | else | |
271 | printf("%luMB %lu cyl, %lu head, %lu sec", | |
272 | du->dk_dd.d_secperunit | |
273 | * du->dk_dd.d_secsize / (1024 * 1024), | |
274 | du->dk_dd.d_ncylinders, | |
275 | du->dk_dd.d_ntracks, | |
276 | du->dk_dd.d_nsectors); | |
277 | printf(", type "); | |
278 | for (i = blank = 0; i < sizeof(du->dk_params.wdp_model); i++) { | |
279 | char c = du->dk_params.wdp_model[i]; | |
15637ed4 | 280 | |
6d2dcc99 NW |
281 | if (blank && c == ' ') |
282 | continue; | |
15637ed4 RG |
283 | if (blank && c != ' ') { |
284 | printf(" %c", c); | |
285 | blank = 0; | |
286 | continue; | |
287 | } | |
288 | if (c == ' ') | |
289 | blank = 1; | |
290 | else | |
291 | printf("%c", c); | |
292 | } | |
80d17733 NW |
293 | printf("\n"); |
294 | ||
295 | /* | |
296 | * Start timeout routine for this drive. | |
297 | * XXX timeout should be per controller. | |
298 | */ | |
299 | wdtimeout((caddr_t)du, 0); | |
300 | } else { | |
6d2dcc99 | 301 | free(du, M_TEMP); |
80d17733 | 302 | wddrives[lunit] = NULL; |
15637ed4 RG |
303 | } |
304 | } | |
80d17733 NW |
305 | |
306 | /* | |
307 | * Discard any interrupts generated by wdgetctlr(). wdflushirq() | |
308 | * doesn't work now because the ambient ipl is too high. | |
309 | */ | |
310 | wdtab[dvp->id_unit].b_active = 2; | |
311 | ||
312 | return (1); | |
15637ed4 RG |
313 | } |
314 | ||
315 | /* Read/write routine for a buffer. Finds the proper unit, range checks | |
316 | * arguments, and schedules the transfer. Does not wait for the transfer | |
317 | * to complete. Multi-page transfers are supported. All I/O requests must | |
318 | * be a multiple of a sector in length. | |
319 | */ | |
4c45483e | 320 | void |
15637ed4 RG |
321 | wdstrategy(register struct buf *bp) |
322 | { | |
323 | register struct buf *dp; | |
80d17733 | 324 | struct disk *du; |
6d2dcc99 | 325 | int lunit = wdunit(bp->b_dev); |
15637ed4 RG |
326 | int s; |
327 | ||
328 | /* valid unit, controller, and request? */ | |
80d17733 | 329 | if (lunit >= NWD || bp->b_blkno < 0 || (du = wddrives[lunit]) == NULL) { |
15637ed4 RG |
330 | |
331 | bp->b_error = EINVAL; | |
332 | bp->b_flags |= B_ERROR; | |
333 | goto done; | |
334 | } | |
335 | ||
336 | /* "soft" write protect check */ | |
337 | if ((du->dk_flags & DKFL_WRITEPROT) && (bp->b_flags & B_READ) == 0) { | |
338 | bp->b_error = EROFS; | |
339 | bp->b_flags |= B_ERROR; | |
340 | goto done; | |
341 | } | |
342 | ||
80d17733 NW |
343 | /* |
344 | * Do bounds checking, adjust transfer, and set b_cylin. | |
345 | */ | |
346 | if (bounds_check_with_label(bp, wddospart(bp->b_dev) | |
347 | ? &du->dk_dd2 : &du->dk_dd, | |
348 | du->dk_wlabel) <= 0) | |
349 | goto done; | |
15637ed4 | 350 | |
15637ed4 | 351 | /* queue transfer on drive, activate drive and controller if idle */ |
6d2dcc99 | 352 | dp = &wdutab[lunit]; |
15637ed4 RG |
353 | s = splbio(); |
354 | disksort(dp, bp); | |
355 | if (dp->b_active == 0) | |
80d17733 | 356 | wdustart(du); /* start drive */ |
6d2dcc99 NW |
357 | |
358 | /* Pick up changes made by readdisklabel(). */ | |
359 | if (du->dk_flags & DKFL_LABELLING && du->dk_state > RECAL) { | |
360 | wdsleep(du->dk_ctrlr, "wdlab"); | |
361 | du->dk_state = WANTOPEN; | |
362 | } | |
363 | ||
364 | if (wdtab[du->dk_ctrlr].b_active == 0) | |
80d17733 | 365 | wdstart(du->dk_ctrlr); /* start controller */ |
15637ed4 RG |
366 | splx(s); |
367 | return; | |
368 | ||
369 | done: | |
370 | /* toss transfer, we're done early */ | |
371 | biodone(bp); | |
372 | } | |
373 | ||
374 | /* | |
375 | * Routine to queue a command to the controller. The unit's | |
376 | * request is linked into the active list for the controller. | |
377 | * If the controller is idle, the transfer is started. | |
378 | */ | |
379 | static void | |
380 | wdustart(register struct disk *du) | |
381 | { | |
6d2dcc99 | 382 | register struct buf *bp, *dp = &wdutab[du->dk_lunit]; |
80d17733 | 383 | int ctrlr = du->dk_ctrlr; |
15637ed4 RG |
384 | |
385 | /* unit already active? */ | |
386 | if (dp->b_active) | |
387 | return; | |
388 | ||
389 | /* anything to start? */ | |
390 | bp = dp->b_actf; | |
391 | if (bp == NULL) | |
6d2dcc99 | 392 | return; |
15637ed4 RG |
393 | |
394 | /* link onto controller queue */ | |
395 | dp->b_forw = NULL; | |
80d17733 | 396 | if (wdtab[ctrlr].b_actf == NULL) |
6d2dcc99 | 397 | wdtab[ctrlr].b_actf = dp; |
15637ed4 | 398 | else |
6d2dcc99 NW |
399 | wdtab[ctrlr].b_actl->b_forw = dp; |
400 | wdtab[ctrlr].b_actl = dp; | |
15637ed4 RG |
401 | |
402 | /* mark the drive unit as busy */ | |
403 | dp->b_active = 1; | |
404 | } | |
405 | ||
406 | /* | |
407 | * Controller startup routine. This does the calculation, and starts | |
408 | * a single-sector read or write operation. Called to start a transfer, | |
409 | * or from the interrupt routine to continue a multi-sector transfer. | |
410 | * RESTRICTIONS: | |
6d2dcc99 | 411 | * 1. The transfer length must be an exact multiple of the sector size. |
15637ed4 RG |
412 | */ |
413 | ||
414 | static void | |
6d2dcc99 | 415 | wdstart(int ctrlr) |
15637ed4 | 416 | { |
80d17733 | 417 | register struct disk *du; |
15637ed4 RG |
418 | register struct buf *bp; |
419 | struct disklabel *lp; | |
420 | struct buf *dp; | |
421 | register struct bt_bad *bt_ptr; | |
6d2dcc99 | 422 | long blknum, cylin, head, sector; |
80d17733 NW |
423 | long secpertrk, secpercyl; |
424 | int lunit; | |
15637ed4 RG |
425 | |
426 | loop: | |
427 | /* is there a drive for the controller to do a transfer with? */ | |
6d2dcc99 | 428 | dp = wdtab[ctrlr].b_actf; |
15637ed4 RG |
429 | if (dp == NULL) |
430 | return; | |
431 | ||
80d17733 NW |
432 | /* |
433 | * Is there a transfer to this drive? If so, link it on the | |
434 | * controller's queue. | |
435 | */ | |
15637ed4 RG |
436 | bp = dp->b_actf; |
437 | if (bp == NULL) { | |
6d2dcc99 | 438 | wdtab[ctrlr].b_actf = dp->b_forw; |
15637ed4 RG |
439 | goto loop; |
440 | } | |
441 | ||
442 | /* obtain controller and drive information */ | |
6d2dcc99 NW |
443 | lunit = wdunit(bp->b_dev); |
444 | du = wddrives[lunit]; | |
15637ed4 RG |
445 | |
446 | /* if not really a transfer, do control operations specially */ | |
447 | if (du->dk_state < OPEN) { | |
6d2dcc99 NW |
448 | if (du->dk_state != WANTOPEN) |
449 | printf("wd%d: wdstart: weird dk_state %d\n", | |
80d17733 | 450 | du->dk_lunit, du->dk_state); |
6d2dcc99 NW |
451 | if (wdcontrol(bp) != 0) |
452 | printf("wd%d: wdstart: wdcontrol returned nonzero, state = %d\n", | |
80d17733 | 453 | du->dk_lunit, du->dk_state); |
15637ed4 RG |
454 | return; |
455 | } | |
456 | ||
457 | /* calculate transfer details */ | |
458 | blknum = bp->b_blkno + du->dk_skip; | |
6d2dcc99 | 459 | #ifdef WDDEBUG |
15637ed4 | 460 | if (du->dk_skip == 0) |
6d2dcc99 | 461 | printf("wd%d: wdstart: %s %d@%d; map ", lunit, |
80d17733 NW |
462 | (bp->b_flags & B_READ) ? "read" : "write", |
463 | bp->b_bcount, blknum); | |
15637ed4 | 464 | else |
80d17733 | 465 | printf(" %d)%x", du->dk_skip, inb(du->dk_port + wd_altsts)); |
15637ed4 | 466 | #endif |
15637ed4 RG |
467 | if (du->dk_skip == 0) |
468 | du->dk_bc = bp->b_bcount; | |
469 | ||
470 | lp = &du->dk_dd; | |
471 | secpertrk = lp->d_nsectors; | |
472 | secpercyl = lp->d_secpercyl; | |
80d17733 NW |
473 | if (wddospart(bp->b_dev)) |
474 | blknum += du->dk_dd2.d_partitions[wdpart(bp->b_dev)].p_offset; | |
475 | else | |
15637ed4 RG |
476 | blknum += lp->d_partitions[wdpart(bp->b_dev)].p_offset; |
477 | cylin = blknum / secpercyl; | |
478 | head = (blknum % secpercyl) / secpertrk; | |
479 | sector = blknum % secpertrk; | |
480 | ||
481 | /* | |
482 | * See if the current block is in the bad block list. | |
483 | * (If we have one, and not formatting.) | |
484 | */ | |
80d17733 NW |
485 | if ((du->dk_flags & (DKFL_SINGLE | DKFL_BADSECT)) |
486 | == (DKFL_SINGLE | DKFL_BADSECT)) | |
487 | #define BAD144_NO_CYL 0xffff /* XXX should be in dkbad.h; bad144.c uses -1 */ | |
488 | for (bt_ptr = du->dk_bad.bt_bad; bt_ptr->bt_cyl != BAD144_NO_CYL; | |
6d2dcc99 | 489 | bt_ptr++) { |
15637ed4 RG |
490 | if (bt_ptr->bt_cyl > cylin) |
491 | /* Sorted list, and we passed our cylinder. quit. */ | |
492 | break; | |
493 | if (bt_ptr->bt_cyl == cylin && | |
6d2dcc99 | 494 | bt_ptr->bt_trksec == (head << 8) + sector) { |
15637ed4 | 495 | /* |
80d17733 | 496 | * Found bad block. Calculate new block number. |
15637ed4 RG |
497 | * This starts at the end of the disk (skip the |
498 | * last track which is used for the bad block list), | |
499 | * and works backwards to the front of the disk. | |
500 | */ | |
80d17733 NW |
501 | #ifdef WDDEBUG |
502 | printf("--- badblock code -> Old = %ld; ", blknum); | |
15637ed4 | 503 | #endif |
6d2dcc99 NW |
504 | |
505 | /* | |
506 | * XXX the offset of the bad sector table ought | |
507 | * to be stored in the in-core copy of the table. | |
508 | */ | |
509 | #define BAD144_PART 2 /* XXX scattered magic numbers */ | |
510 | #define BSD_PART 0 /* XXX should be 2 but bad144.c uses 0 */ | |
511 | if (lp->d_partitions[BSD_PART].p_offset != 0) | |
512 | blknum = lp->d_partitions[BAD144_PART].p_offset | |
513 | + lp->d_partitions[BAD144_PART].p_size; | |
514 | else | |
515 | blknum = lp->d_secperunit; | |
516 | blknum -= lp->d_nsectors + (bt_ptr - du->dk_bad.bt_bad) | |
517 | + 1; | |
518 | ||
15637ed4 RG |
519 | cylin = blknum / secpercyl; |
520 | head = (blknum % secpercyl) / secpertrk; | |
521 | sector = blknum % secpertrk; | |
80d17733 NW |
522 | #ifdef WDDEBUG |
523 | printf("new = %ld\n", blknum); | |
15637ed4 RG |
524 | #endif |
525 | break; | |
526 | } | |
527 | } | |
15637ed4 | 528 | |
80d17733 | 529 | wdtab[ctrlr].b_active = 1; /* mark controller active */ |
15637ed4 | 530 | |
15637ed4 RG |
531 | /* if starting a multisector transfer, or doing single transfers */ |
532 | if (du->dk_skip == 0 || (du->dk_flags & DKFL_SINGLE)) { | |
80d17733 NW |
533 | u_int command; |
534 | u_int count; | |
15637ed4 | 535 | |
6d2dcc99 NW |
536 | if (wdtab[ctrlr].b_errcnt && (bp->b_flags & B_READ) == 0) |
537 | du->dk_bc += DEV_BSIZE; | |
90af2aa0 | 538 | |
80d17733 | 539 | #ifdef B_FORMAT |
15637ed4 | 540 | if (bp->b_flags & B_FORMAT) { |
6d2dcc99 NW |
541 | command = WDCC_FORMAT; |
542 | count = lp->d_nsectors; | |
543 | sector = lp->d_gap3 - 1; /* + 1 later */ | |
544 | } else | |
15637ed4 | 545 | #endif |
6d2dcc99 | 546 | { |
80d17733 NW |
547 | if (du->dk_flags & DKFL_SINGLE) |
548 | count = 1; | |
549 | else | |
550 | count = howmany(du->dk_bc, DEV_BSIZE); | |
551 | command = (bp->b_flags & B_READ) | |
552 | ? WDCC_READ : WDCC_WRITE; | |
15637ed4 | 553 | } |
90af2aa0 | 554 | |
6d2dcc99 NW |
555 | /* |
556 | * XXX this loop may never terminate. The code to handle | |
80d17733 NW |
557 | * counting down of retries and eventually failing the i/o |
558 | * is in wdintr() and we can't get there from here. | |
6d2dcc99 NW |
559 | */ |
560 | if (wdtest != 0) { | |
561 | if (--wdtest == 0) { | |
562 | wdtest = 100; | |
563 | printf("dummy wdunwedge\n"); | |
564 | wdunwedge(du); | |
565 | } | |
566 | } | |
80d17733 NW |
567 | while (wdcommand(du, cylin, head, sector, count, command) |
568 | != 0) { | |
6d2dcc99 | 569 | wderror(bp, du, |
80d17733 | 570 | "wdstart: timeout waiting to give command"); |
6d2dcc99 | 571 | wdunwedge(du); |
4035d7c4 | 572 | } |
80d17733 NW |
573 | #ifdef WDDEBUG |
574 | printf("cylin %ld head %ld sector %ld addr %x sts %x\n", | |
575 | cylin, head, sector, | |
576 | (int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, | |
577 | inb(du->dk_port + wd_altsts)); | |
15637ed4 RG |
578 | #endif |
579 | } | |
580 | ||
80d17733 NW |
581 | /* |
582 | * Schedule wdtimeout() to wake up after a few seconds. Retrying | |
583 | * unmarked bad blocks can take 3 seconds! Then it is not good that | |
584 | * we retry 5 times. | |
585 | * | |
586 | * XXX wdtimeout() doesn't increment the error count so we may loop | |
587 | * forever. More seriously, the loop isn't forever but causes a | |
588 | * crash. | |
589 | * | |
590 | * TODO fix b_resid bug elsewhere (fd.c....). Fix short but positive | |
591 | * counts being discarded after there is an error (in physio I | |
592 | * think). Discarding them would be OK if the (special) file offset | |
593 | * was not advanced. | |
594 | */ | |
595 | du->dk_timeout = 1 + 1; | |
596 | ||
597 | /* If this is a read operation, just go away until it's done. */ | |
598 | if (bp->b_flags & B_READ) | |
599 | return; | |
15637ed4 | 600 | |
80d17733 NW |
601 | /* Ready to send data? */ |
602 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ) < 0) { | |
6d2dcc99 NW |
603 | wderror(bp, du, "wdstart: timeout waiting for DRQ"); |
604 | /* | |
605 | * XXX what do we do now? If we've just issued the command, | |
606 | * then we can treat this failure the same as a command | |
607 | * failure. But if we are continuing a multi-sector write, | |
608 | * the command was issued ages ago, so we can't simply | |
609 | * restart it. | |
610 | * | |
80d17733 NW |
611 | * XXX we waste a lot of time unnecessarily translating block |
612 | * numbers to cylin/head/sector for continued i/o's. | |
6d2dcc99 | 613 | */ |
15637ed4 RG |
614 | } |
615 | ||
616 | /* then send it! */ | |
80d17733 NW |
617 | outsw(du->dk_port + wd_data, |
618 | (int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, | |
619 | DEV_BSIZE / sizeof(short)); | |
15637ed4 RG |
620 | du->dk_bc -= DEV_BSIZE; |
621 | } | |
622 | ||
623 | /* Interrupt routine for the controller. Acknowledge the interrupt, check for | |
624 | * errors on the current operation, mark it done if necessary, and start | |
625 | * the next request. Also check for a partially done transfer, and | |
626 | * continue with the next chunk if so. | |
627 | */ | |
628 | void | |
6d2dcc99 | 629 | wdintr(int unit) |
15637ed4 RG |
630 | { |
631 | register struct disk *du; | |
632 | register struct buf *bp, *dp; | |
15637ed4 | 633 | |
80d17733 NW |
634 | if (wdtab[unit].b_active == 2) |
635 | return; /* intr in wdflushirq() */ | |
6d2dcc99 NW |
636 | if (!wdtab[unit].b_active) { |
637 | printf("wdc%d: extra interrupt\n", unit); | |
15637ed4 RG |
638 | return; |
639 | } | |
640 | ||
6d2dcc99 | 641 | dp = wdtab[unit].b_actf; |
15637ed4 RG |
642 | bp = dp->b_actf; |
643 | du = wddrives[wdunit(bp->b_dev)]; | |
80d17733 | 644 | du->dk_timeout = 0; |
15637ed4 | 645 | |
6d2dcc99 NW |
646 | if (wdwait(du, 0) < 0) { |
647 | wderror(bp, du, "wdintr: timeout waiting for status"); | |
648 | du->dk_status |= WDCS_ERR; /* XXX */ | |
649 | } | |
15637ed4 RG |
650 | |
651 | /* is it not a transfer, but a control operation? */ | |
652 | if (du->dk_state < OPEN) { | |
6d2dcc99 | 653 | wdtab[unit].b_active = 0; |
15637ed4 | 654 | if (wdcontrol(bp)) |
6d2dcc99 | 655 | wdstart(unit); |
15637ed4 RG |
656 | return; |
657 | } | |
658 | ||
659 | /* have we an error? */ | |
6d2dcc99 NW |
660 | if (du->dk_status & (WDCS_ERR | WDCS_ECCCOR)) { |
661 | oops: | |
80d17733 | 662 | #ifdef WDDEBUG |
6d2dcc99 | 663 | wderror(bp, du, "wdintr"); |
15637ed4 | 664 | #endif |
80d17733 NW |
665 | if ((du->dk_flags & DKFL_SINGLE) == 0) { |
666 | du->dk_flags |= DKFL_ERROR; | |
15637ed4 RG |
667 | goto outt; |
668 | } | |
669 | #ifdef B_FORMAT | |
670 | if (bp->b_flags & B_FORMAT) { | |
80d17733 | 671 | bp->b_error = EIO; |
15637ed4 RG |
672 | bp->b_flags |= B_ERROR; |
673 | goto done; | |
674 | } | |
675 | #endif | |
6d2dcc99 | 676 | |
15637ed4 | 677 | /* error or error correction? */ |
6d2dcc99 NW |
678 | if (du->dk_status & WDCS_ERR) { |
679 | if (++wdtab[unit].b_errcnt < RETRIES) { | |
680 | wdtab[unit].b_active = 0; | |
15637ed4 | 681 | } else { |
6d2dcc99 | 682 | wderror(bp, du, "hard error"); |
80d17733 | 683 | bp->b_error = EIO; |
15637ed4 RG |
684 | bp->b_flags |= B_ERROR; /* flag the error */ |
685 | } | |
6d2dcc99 NW |
686 | } else |
687 | wderror(bp, du, "soft ecc"); | |
15637ed4 | 688 | } |
15637ed4 RG |
689 | |
690 | /* | |
691 | * If this was a successful read operation, fetch the data. | |
692 | */ | |
80d17733 NW |
693 | if (((bp->b_flags & (B_READ | B_ERROR)) == B_READ) |
694 | && wdtab[unit].b_active) { | |
695 | int chk, dummy; | |
15637ed4 RG |
696 | |
697 | chk = min(DEV_BSIZE / sizeof(short), du->dk_bc / sizeof(short)); | |
698 | ||
699 | /* ready to receive data? */ | |
6d2dcc99 NW |
700 | if ((du->dk_status & (WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ)) |
701 | != (WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ)) | |
702 | wderror(bp, du, "wdintr: read intr arrived early"); | |
703 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ) != 0) { | |
704 | wderror(bp, du, "wdintr: read error detected late"); | |
705 | goto oops; | |
706 | } | |
15637ed4 RG |
707 | |
708 | /* suck in data */ | |
80d17733 NW |
709 | insw(du->dk_port + wd_data, |
710 | (int)bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, chk); | |
15637ed4 RG |
711 | du->dk_bc -= chk * sizeof(short); |
712 | ||
80d17733 NW |
713 | /* XXX for obsolete fractional sector reads. */ |
714 | while (chk++ < DEV_BSIZE / sizeof(short)) | |
715 | insw(du->dk_port + wd_data, &dummy, 1); | |
15637ed4 RG |
716 | } |
717 | ||
6d2dcc99 NW |
718 | wdxfer[du->dk_lunit]++; |
719 | outt: | |
720 | if (wdtab[unit].b_active) { | |
15637ed4 | 721 | if ((bp->b_flags & B_ERROR) == 0) { |
80d17733 | 722 | du->dk_skip++; /* add to successful sectors */ |
6d2dcc99 NW |
723 | if (wdtab[unit].b_errcnt) |
724 | wderror(bp, du, "soft error"); | |
725 | wdtab[unit].b_errcnt = 0; | |
15637ed4 RG |
726 | |
727 | /* see if more to transfer */ | |
728 | if (du->dk_bc > 0 && (du->dk_flags & DKFL_ERROR) == 0) { | |
6d2dcc99 NW |
729 | wdtab[unit].b_active = 0; |
730 | wdstart(unit); | |
80d17733 NW |
731 | return; /* next chunk is started */ |
732 | } else if ((du->dk_flags & (DKFL_SINGLE | DKFL_ERROR)) | |
733 | == DKFL_ERROR) { | |
15637ed4 RG |
734 | du->dk_skip = 0; |
735 | du->dk_flags &= ~DKFL_ERROR; | |
80d17733 | 736 | du->dk_flags |= DKFL_SINGLE; |
6d2dcc99 NW |
737 | wdtab[unit].b_active = 0; |
738 | wdstart(unit); | |
80d17733 | 739 | return; /* redo xfer sector by sector */ |
15637ed4 RG |
740 | } |
741 | } | |
6d2dcc99 NW |
742 | #ifdef B_FORMAT |
743 | done: ; | |
744 | #endif | |
15637ed4 RG |
745 | /* done with this transfer, with or without error */ |
746 | du->dk_flags &= ~DKFL_SINGLE; | |
6d2dcc99 NW |
747 | wdtab[unit].b_actf = dp->b_forw; |
748 | wdtab[unit].b_errcnt = 0; | |
80d17733 | 749 | bp->b_resid = bp->b_bcount - du->dk_skip * DEV_BSIZE; |
15637ed4 RG |
750 | du->dk_skip = 0; |
751 | dp->b_active = 0; | |
752 | dp->b_actf = bp->av_forw; | |
753 | dp->b_errcnt = 0; | |
15637ed4 RG |
754 | biodone(bp); |
755 | } | |
756 | ||
757 | /* controller idle */ | |
6d2dcc99 | 758 | wdtab[unit].b_active = 0; |
15637ed4 RG |
759 | |
760 | /* anything more on drive queue? */ | |
761 | if (dp->b_actf) | |
762 | wdustart(du); | |
763 | /* anything more for controller to do? */ | |
6d2dcc99 NW |
764 | if (wdtab[unit].b_actf) |
765 | wdstart(unit); | |
15637ed4 RG |
766 | } |
767 | ||
768 | /* | |
769 | * Initialize a drive. | |
770 | */ | |
771 | int | |
772 | wdopen(dev_t dev, int flags, int fmt, struct proc *p) | |
773 | { | |
6d2dcc99 | 774 | register unsigned int lunit; |
15637ed4 | 775 | register struct disk *du; |
80d17733 | 776 | int part = wdpart(dev), mask = 1 << part; |
6d2dcc99 | 777 | struct partition *pp; |
80d17733 | 778 | char *msg; |
6d2dcc99 | 779 | struct disklabel save_label; |
15637ed4 | 780 | |
6d2dcc99 | 781 | lunit = wdunit(dev); |
80d17733 NW |
782 | if (lunit >= NWD) |
783 | return (ENXIO); | |
6d2dcc99 | 784 | du = wddrives[lunit]; |
80d17733 NW |
785 | if (du == NULL) |
786 | return (ENXIO); | |
787 | ||
788 | /* Finish flushing IRQs left over from wdattach(). */ | |
789 | if (wdtab[du->dk_ctrlr].b_active == 2) | |
790 | wdtab[du->dk_ctrlr].b_active = 0; | |
791 | ||
792 | /* | |
793 | * That's all for valid DOS partitions. We don't need a BSD label. | |
794 | * The openmask is only used for checking BSD partitions so we don't | |
795 | * need to maintain it. | |
796 | */ | |
797 | if (wddospart(dev)) { | |
798 | /* XXX we do need a disklabel for now. */ | |
799 | if ((du->dk_flags & DKFL_BSDLABEL) == 0) | |
800 | return (ENXIO); | |
801 | ||
802 | return (part > NDOSPART ? ENXIO : 0); | |
803 | } | |
15637ed4 | 804 | |
6d2dcc99 NW |
805 | while (du->dk_flags & DKFL_LABELLING) |
806 | tsleep((caddr_t)&du->dk_flags, PZERO - 1, "wdopen", 1); | |
15637ed4 | 807 | if ((du->dk_flags & DKFL_BSDLABEL) == 0) { |
4035d7c4 | 808 | /* |
80d17733 NW |
809 | * wdtab[ctrlr].b_active != 0 implies |
810 | * wdutab[lunit].b_actf == NULL (?) | |
6d2dcc99 NW |
811 | * so the following guards most things (until the next i/o). |
812 | * It doesn't guard against a new i/o starting and being | |
813 | * affected by the label being changed. Sigh. | |
4035d7c4 | 814 | */ |
6d2dcc99 NW |
815 | wdsleep(du->dk_ctrlr, "wdopn1"); |
816 | ||
817 | du->dk_flags |= DKFL_LABELLING | DKFL_WRITEPROT; | |
90af2aa0 | 818 | du->dk_state = WANTOPEN; |
6d2dcc99 | 819 | wdutab[lunit].b_actf = NULL; |
90af2aa0 | 820 | |
6d2dcc99 NW |
821 | /* |
822 | * Read label using WDRAW partition. | |
823 | * | |
824 | * If the drive has an MBR, then the current geometry (from | |
825 | * wdgetctlr()) is used to read it; then the BIOS/DOS | |
826 | * geometry is inferred and used to read the label off the | |
827 | * 'c' partition. Otherwise the label is read using the | |
828 | * current geometry. The label gives the final geometry. | |
829 | * If bad sector handling is enabled, then this geometry | |
830 | * is used to read the bad sector table. The geometry | |
831 | * changes occur inside readdisklabel() and are propagated | |
832 | * to the driver by resetting the state machine. | |
833 | */ | |
834 | save_label = du->dk_dd; | |
80d17733 | 835 | #define WDSTRATEGY ((int (*)(struct buf *)) wdstrategy) /* XXX */ |
6d2dcc99 NW |
836 | msg = readdisklabel(makewddev(major(dev), lunit, WDRAW), |
837 | WDSTRATEGY, &du->dk_dd, | |
838 | du->dk_dospartitions, &du->dk_bad, | |
839 | (struct buf **)NULL); | |
840 | du->dk_flags &= ~DKFL_LABELLING; | |
841 | if (msg != NULL) { | |
842 | du->dk_dd = save_label; | |
3419be7d | 843 | log(LOG_WARNING, "wd%d: cannot find label (%s)\n", |
6d2dcc99 | 844 | lunit, msg); |
3419be7d | 845 | if (part != WDRAW) |
6d2dcc99 | 846 | return (EINVAL); /* XXX needs translation */ |
15637ed4 | 847 | } else { |
80d17733 NW |
848 | int dospart; |
849 | unsigned long newsize, offset, size; | |
850 | ||
15637ed4 RG |
851 | du->dk_flags |= DKFL_BSDLABEL; |
852 | du->dk_flags &= ~DKFL_WRITEPROT; | |
853 | if (du->dk_dd.d_flags & D_BADSECT) | |
854 | du->dk_flags |= DKFL_BADSECT; | |
80d17733 NW |
855 | |
856 | /* | |
857 | * Force WDRAW partition to be the whole disk. | |
858 | */ | |
859 | offset = du->dk_dd.d_partitions[WDRAW].p_offset; | |
860 | if (offset != 0) { | |
861 | printf( | |
862 | "wd%d: changing offset of 'd' partition from %lu to 0\n", | |
863 | du->dk_lunit, offset); | |
864 | du->dk_dd.d_partitions[WDRAW].p_offset = 0; | |
865 | } | |
866 | size = du->dk_dd.d_partitions[WDRAW].p_size; | |
867 | newsize = du->dk_dd.d_secperunit; /* XXX */ | |
868 | if (size != newsize) { | |
869 | printf( | |
870 | "wd%d: changing size of 'd' partition from %lu to %lu\n", | |
871 | du->dk_lunit, size, newsize); | |
872 | du->dk_dd.d_partitions[WDRAW].p_size = newsize; | |
873 | } | |
874 | ||
875 | /* | |
876 | * Convert DOS partition data to a label. | |
877 | */ | |
878 | du->dk_dd2 = du->dk_dd; | |
879 | bzero(du->dk_dd2.d_partitions, | |
880 | sizeof du->dk_dd2.d_partitions); | |
881 | du->dk_dd2.d_partitions[0].p_size | |
882 | = du->dk_dd.d_secperunit; /* XXX */ | |
883 | for (dospart = 1; dospart <= NDOSPART; dospart++) { | |
884 | du->dk_dd2.d_partitions[dospart].p_offset = | |
885 | du->dk_dospartitions[dospart - 1].dp_start; | |
886 | du->dk_dd2.d_partitions[dospart].p_size = | |
887 | du->dk_dospartitions[dospart - 1].dp_size; | |
888 | } | |
15637ed4 RG |
889 | } |
890 | ||
6d2dcc99 NW |
891 | /* Pick up changes made by readdisklabel(). */ |
892 | wdsleep(du->dk_ctrlr, "wdopn2"); | |
893 | du->dk_state = WANTOPEN; | |
90af2aa0 | 894 | } |
6d2dcc99 NW |
895 | |
896 | /* | |
80d17733 NW |
897 | * Warn if a partion is opened that overlaps another partition which |
898 | * is open unless one is the "raw" partition (whole disk). | |
6d2dcc99 | 899 | */ |
80d17733 | 900 | if ((du->dk_openpart & mask) == 0 && part != WDRAW) { |
15637ed4 RG |
901 | int start, end; |
902 | ||
6d2dcc99 NW |
903 | pp = &du->dk_dd.d_partitions[part]; |
904 | start = pp->p_offset; | |
905 | end = pp->p_offset + pp->p_size; | |
906 | for (pp = du->dk_dd.d_partitions; | |
907 | pp < &du->dk_dd.d_partitions[du->dk_dd.d_npartitions]; | |
908 | pp++) { | |
909 | if (pp->p_offset + pp->p_size <= start || | |
80d17733 | 910 | pp->p_offset >= end) |
6d2dcc99 NW |
911 | continue; |
912 | if (pp - du->dk_dd.d_partitions == WDRAW) | |
913 | continue; | |
80d17733 NW |
914 | if (du->dk_openpart |
915 | & (1 << (pp - du->dk_dd.d_partitions))) | |
6d2dcc99 NW |
916 | log(LOG_WARNING, |
917 | "wd%d%c: overlaps open partition (%c)\n", | |
918 | lunit, part + 'a', | |
919 | pp - du->dk_dd.d_partitions + 'a'); | |
920 | } | |
921 | } | |
922 | if (part >= du->dk_dd.d_npartitions && part != WDRAW) | |
923 | return (ENXIO); | |
15637ed4 | 924 | |
6d2dcc99 NW |
925 | switch (fmt) { |
926 | case S_IFCHR: | |
927 | du->dk_copenpart |= mask; | |
928 | break; | |
929 | case S_IFBLK: | |
930 | du->dk_bopenpart |= mask; | |
931 | break; | |
932 | } | |
80d17733 NW |
933 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
934 | ||
15637ed4 RG |
935 | return (0); |
936 | } | |
937 | ||
938 | /* | |
939 | * Implement operations other than read/write. | |
940 | * Called from wdstart or wdintr during opens and formats. | |
941 | * Uses finite-state-machine to track progress of operation in progress. | |
942 | * Returns 0 if operation still in progress, 1 if completed. | |
943 | */ | |
944 | static int | |
945 | wdcontrol(register struct buf *bp) | |
946 | { | |
947 | register struct disk *du; | |
80d17733 | 948 | int ctrlr; |
15637ed4 RG |
949 | |
950 | du = wddrives[wdunit(bp->b_dev)]; | |
6d2dcc99 | 951 | ctrlr = du->dk_ctrlr; |
90af2aa0 | 952 | |
6d2dcc99 | 953 | switch (du->dk_state) { |
80d17733 | 954 | case WANTOPEN: |
6d2dcc99 NW |
955 | tryagainrecal: |
956 | wdtab[ctrlr].b_active = 1; | |
957 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0) { | |
958 | wderror(bp, du, "wdcontrol: wdcommand failed"); | |
959 | goto maybe_retry; | |
960 | } | |
961 | du->dk_state = RECAL; | |
80d17733 | 962 | return (0); |
15637ed4 | 963 | case RECAL: |
6d2dcc99 NW |
964 | if (du->dk_status & WDCS_ERR || wdsetctlr(du) != 0) { |
965 | wderror(bp, du, "wdcontrol: recal failed"); | |
966 | maybe_retry: | |
967 | if (du->dk_status & WDCS_ERR) | |
968 | wdunwedge(du); | |
80d17733 NW |
969 | du->dk_state = WANTOPEN; |
970 | if (++wdtab[ctrlr].b_errcnt < RETRIES) | |
15637ed4 | 971 | goto tryagainrecal; |
15637ed4 | 972 | bp->b_error = ENXIO; /* XXX needs translation */ |
6d2dcc99 | 973 | bp->b_flags |= B_ERROR; |
80d17733 | 974 | return (1); |
15637ed4 | 975 | } |
6d2dcc99 | 976 | wdtab[ctrlr].b_errcnt = 0; |
15637ed4 RG |
977 | du->dk_state = OPEN; |
978 | /* | |
80d17733 NW |
979 | * The rest of the initialization can be done by normal |
980 | * means. | |
15637ed4 | 981 | */ |
80d17733 | 982 | return (1); |
15637ed4 | 983 | } |
6d2dcc99 NW |
984 | panic("wdcontrol"); |
985 | return (1); | |
15637ed4 RG |
986 | } |
987 | ||
988 | /* | |
6d2dcc99 NW |
989 | * Wait uninterruptibly until controller is not busy, then send it a command. |
990 | * The wait usually terminates immediately because we waited for the previous | |
991 | * command to terminate. | |
15637ed4 RG |
992 | */ |
993 | static int | |
6d2dcc99 NW |
994 | wdcommand(struct disk *du, u_int cylinder, u_int head, u_int sector, |
995 | u_int count, u_int command) | |
58324b60 | 996 | { |
80d17733 | 997 | u_int wdc; |
15637ed4 | 998 | |
6d2dcc99 NW |
999 | if (wdwait(du, 0) < 0) |
1000 | return (1); | |
15637ed4 | 1001 | wdc = du->dk_port; |
6d2dcc99 NW |
1002 | outb(wdc + wd_precomp, du->dk_dd.d_precompcyl / 4); |
1003 | outb(wdc + wd_cyl_lo, cylinder); | |
1004 | outb(wdc + wd_cyl_hi, cylinder >> 8); | |
80d17733 | 1005 | outb(wdc + wd_sdh, WDSD_IBM | (du->dk_unit << 4) | head); |
6d2dcc99 NW |
1006 | outb(wdc + wd_sector, sector + 1); |
1007 | outb(wdc + wd_seccnt, count); | |
80d17733 NW |
1008 | if (wdwait(du, command == WDCC_DIAGNOSE || command == WDCC_IDC |
1009 | ? 0 : WDCS_READY) < 0) | |
1010 | return (1); | |
1011 | outb(wdc + wd_command, command); | |
6d2dcc99 | 1012 | return (0); |
15637ed4 RG |
1013 | } |
1014 | ||
1015 | /* | |
1016 | * issue IDC to drive to tell it just what geometry it is to be. | |
1017 | */ | |
1018 | static int | |
6d2dcc99 NW |
1019 | wdsetctlr(struct disk *du) |
1020 | { | |
80d17733 NW |
1021 | #ifdef WDDEBUG |
1022 | printf("wd(%d,%d): wdsetctlr: C %lu H %lu S %lu\n", | |
1023 | du->dk_ctrlr, du->dk_unit, | |
1024 | du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks, | |
1025 | du->dk_dd.d_nsectors); | |
6d2dcc99 | 1026 | #endif |
80d17733 NW |
1027 | if (du->dk_dd.d_ntracks > 16) { |
1028 | printf("wd%d: cannot handle %lu heads (max 16)\n", | |
1029 | du->dk_lunit, du->dk_dd.d_ntracks); | |
1030 | return (1); | |
1031 | } | |
6d2dcc99 NW |
1032 | if (wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0, |
1033 | du->dk_dd.d_nsectors, WDCC_IDC) != 0 | |
1034 | || wdwait(du, WDCS_READY) != 0) { | |
1035 | wderror((struct buf *)NULL, du, "wdsetctlr failed"); | |
1036 | return (1); | |
1037 | } | |
1038 | return (0); | |
1039 | } | |
15637ed4 | 1040 | |
6d2dcc99 NW |
1041 | /* |
1042 | * Wait until driver is inactive, then set up controller. | |
1043 | */ | |
1044 | static int | |
1045 | wdwsetctlr(struct disk *du) | |
1046 | { | |
80d17733 NW |
1047 | int stat; |
1048 | int x; | |
15637ed4 | 1049 | |
6d2dcc99 | 1050 | wdsleep(du->dk_ctrlr, "wdwset"); |
15637ed4 | 1051 | x = splbio(); |
6d2dcc99 | 1052 | stat = wdsetctlr(du); |
80d17733 | 1053 | wdflushirq(du, x); |
15637ed4 | 1054 | splx(x); |
6d2dcc99 | 1055 | return (stat); |
15637ed4 RG |
1056 | } |
1057 | ||
1058 | /* | |
1059 | * issue READP to drive to ask it what it is. | |
1060 | */ | |
1061 | static int | |
80d17733 NW |
1062 | wdgetctlr(struct disk *du) |
1063 | { | |
1064 | int i; | |
1065 | char tb[DEV_BSIZE]; | |
15637ed4 RG |
1066 | struct wdparams *wp; |
1067 | ||
6d2dcc99 | 1068 | if (wdcommand(du, 0, 0, 0, 0, WDCC_READP) != 0 |
80d17733 NW |
1069 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ) < 0) { |
1070 | /* XXX need to check error status after final transfer. */ | |
6d2dcc99 | 1071 | /* |
80d17733 NW |
1072 | * Old drives don't support WDCC_READP. Try a seek to 0. |
1073 | * Some IDE controllers return trash if there is no drive | |
1074 | * attached, so first test that the drive can be selected. | |
1075 | * This also avoids long waits for nonexistent drives. | |
6d2dcc99 | 1076 | */ |
80d17733 NW |
1077 | if (wdwait(du, 0) < 0) |
1078 | return (1); | |
1079 | outb(du->dk_port + wd_sdh, WDSD_IBM | (du->dk_unit << 4)); | |
1080 | DELAY(5000); /* usually unnecessary; drive select is fast */ | |
1081 | if ((inb(du->dk_port + wd_status) & (WDCS_BUSY | WDCS_READY)) | |
1082 | != WDCS_READY | |
1083 | || wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 | |
1084 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT) != 0) | |
6d2dcc99 | 1085 | return (1); |
6d2dcc99 | 1086 | |
80d17733 NW |
1087 | /* |
1088 | * Fake minimal drive geometry for reading the MBR. | |
1089 | * readdisklabel() may enlarge it to read the label and the | |
1090 | * bad sector table. | |
1091 | */ | |
6d2dcc99 NW |
1092 | du->dk_dd.d_secsize = DEV_BSIZE; |
1093 | du->dk_dd.d_nsectors = 17; | |
1094 | du->dk_dd.d_ntracks = 1; | |
1095 | du->dk_dd.d_ncylinders = 1; | |
1096 | du->dk_dd.d_secpercyl = 17; | |
80d17733 NW |
1097 | du->dk_dd.d_secperunit = 17; |
1098 | ||
1099 | /* | |
1100 | * Fake maximal drive size for writing the label. | |
1101 | */ | |
1102 | du->dk_dd.d_partitions[WDRAW].p_size = 64 * 16 * 1024; | |
3419be7d | 1103 | |
6d2dcc99 NW |
1104 | /* |
1105 | * Fake some more of the label for printing by disklabel(1) | |
1106 | * in case there is no real label. | |
1107 | */ | |
1108 | du->dk_dd.d_type = DTYPE_ST506; | |
1109 | du->dk_dd.d_subtype |= DSTYPE_GEOMETRY; | |
1110 | strncpy(du->dk_dd.d_typename, "Fake geometry", | |
3419be7d | 1111 | sizeof du->dk_dd.d_typename); |
6d2dcc99 NW |
1112 | |
1113 | /* Fake the model name for printing by wdattach(). */ | |
80d17733 | 1114 | strncpy(du->dk_params.wdp_model, "unknown", |
3419be7d | 1115 | sizeof du->dk_params.wdp_model); |
6d2dcc99 NW |
1116 | |
1117 | return (0); | |
15637ed4 RG |
1118 | } |
1119 | ||
1120 | /* obtain parameters */ | |
1121 | wp = &du->dk_params; | |
80d17733 | 1122 | insw(du->dk_port + wd_data, tb, sizeof(tb) / sizeof(short)); |
15637ed4 RG |
1123 | bcopy(tb, wp, sizeof(struct wdparams)); |
1124 | ||
1125 | /* shuffle string byte order */ | |
80d17733 | 1126 | for (i = 0; i < sizeof(wp->wdp_model); i += 2) { |
15637ed4 | 1127 | u_short *p; |
80d17733 | 1128 | |
15637ed4 RG |
1129 | p = (u_short *) (wp->wdp_model + i); |
1130 | *p = ntohs(*p); | |
1131 | } | |
80d17733 | 1132 | #ifdef WDDEBUG |
6d2dcc99 | 1133 | printf( |
80d17733 NW |
1134 | "\nwd(%d,%d): wdgetctlr: gc %x cyl %d trk %d sec %d type %d sz %d model %s\n", |
1135 | du->dk_ctrlr, du->dk_unit, wp->wdp_config, | |
1136 | wp->wdp_fixedcyl + wp->wdp_removcyl, wp->wdp_heads, | |
1137 | wp->wdp_sectors, wp->wdp_cntype, wp->wdp_cnsbsz, | |
1138 | wp->wdp_model); | |
6d2dcc99 | 1139 | #endif |
15637ed4 RG |
1140 | |
1141 | /* update disklabel given drive information */ | |
6d2dcc99 | 1142 | du->dk_dd.d_secsize = DEV_BSIZE; |
80d17733 | 1143 | du->dk_dd.d_ncylinders = wp->wdp_fixedcyl + wp->wdp_removcyl /*+- 1*/ ; |
15637ed4 RG |
1144 | du->dk_dd.d_ntracks = wp->wdp_heads; |
1145 | du->dk_dd.d_nsectors = wp->wdp_sectors; | |
1146 | du->dk_dd.d_secpercyl = du->dk_dd.d_ntracks * du->dk_dd.d_nsectors; | |
80d17733 NW |
1147 | du->dk_dd.d_partitions[WDRAW].p_size = du->dk_dd.d_secperunit |
1148 | = du->dk_dd.d_secpercyl * du->dk_dd.d_ncylinders; | |
15637ed4 RG |
1149 | /* dubious ... */ |
1150 | bcopy("ESDI/IDE", du->dk_dd.d_typename, 9); | |
80d17733 | 1151 | bcopy(wp->wdp_model + 20, du->dk_dd.d_packname, 14 - 1); |
15637ed4 RG |
1152 | /* better ... */ |
1153 | du->dk_dd.d_type = DTYPE_ESDI; | |
1154 | du->dk_dd.d_subtype |= DSTYPE_GEOMETRY; | |
80d17733 | 1155 | |
15637ed4 RG |
1156 | return (0); |
1157 | } | |
1158 | ||
1159 | ||
1160 | /* ARGSUSED */ | |
1161 | int | |
1162 | wdclose(dev_t dev, int flags, int fmt) | |
1163 | { | |
1164 | register struct disk *du; | |
80d17733 NW |
1165 | int part = wdpart(dev), mask = 1 << part; |
1166 | ||
1167 | if (wddospart(dev)) | |
1168 | return (0); | |
15637ed4 RG |
1169 | |
1170 | du = wddrives[wdunit(dev)]; | |
1171 | ||
6d2dcc99 NW |
1172 | switch (fmt) { |
1173 | case S_IFCHR: | |
1174 | du->dk_copenpart &= ~mask; | |
1175 | break; | |
1176 | case S_IFBLK: | |
1177 | du->dk_bopenpart &= ~mask; | |
1178 | break; | |
1179 | } | |
80d17733 NW |
1180 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
1181 | ||
1182 | return (0); | |
15637ed4 RG |
1183 | } |
1184 | ||
1185 | int | |
1186 | wdioctl(dev_t dev, int cmd, caddr_t addr, int flag) | |
1187 | { | |
80d17733 | 1188 | int lunit = wdunit(dev); |
15637ed4 | 1189 | register struct disk *du; |
80d17733 | 1190 | int error = 0; |
6d2dcc99 | 1191 | #ifdef notyet |
15637ed4 RG |
1192 | struct uio auio; |
1193 | struct iovec aiov; | |
6d2dcc99 | 1194 | #endif |
15637ed4 | 1195 | |
6d2dcc99 | 1196 | du = wddrives[lunit]; |
15637ed4 RG |
1197 | |
1198 | switch (cmd) { | |
1199 | ||
1200 | case DIOCSBAD: | |
6d2dcc99 NW |
1201 | if ((flag & FWRITE) == 0) |
1202 | error = EBADF; | |
15637ed4 RG |
1203 | else |
1204 | du->dk_bad = *(struct dkbad *)addr; | |
1205 | break; | |
1206 | ||
1207 | case DIOCGDINFO: | |
1208 | *(struct disklabel *)addr = du->dk_dd; | |
1209 | break; | |
1210 | ||
6d2dcc99 | 1211 | case DIOCGPART: |
80d17733 NW |
1212 | if (wddospart(dev)) |
1213 | return (EINVAL); | |
6d2dcc99 NW |
1214 | ((struct partinfo *)addr)->disklab = &du->dk_dd; |
1215 | ((struct partinfo *)addr)->part = | |
1216 | &du->dk_dd.d_partitions[wdpart(dev)]; | |
1217 | break; | |
1218 | ||
1219 | case DIOCSDINFO: | |
1220 | if ((flag & FWRITE) == 0) | |
1221 | error = EBADF; | |
1222 | else | |
1223 | error = setdisklabel(&du->dk_dd, | |
80d17733 NW |
1224 | (struct disklabel *)addr, |
1225 | #if 0 | |
1226 | /* | |
1227 | * XXX setdisklabel() uses the | |
1228 | * openmask to allow it to reject | |
1229 | * changing open partitions. Why | |
1230 | * are we pretending nothing is | |
1231 | * open? | |
1232 | */ | |
1233 | du->dk_flags & DKFL_BSDLABEL | |
1234 | ? du->dk_openpart : | |
1235 | #endif | |
1236 | 0, | |
1237 | du->dk_dospartitions); | |
6d2dcc99 | 1238 | if (error == 0) { |
15637ed4 | 1239 | du->dk_flags |= DKFL_BSDLABEL; |
6d2dcc99 | 1240 | wdwsetctlr(du); /* XXX - check */ |
15637ed4 | 1241 | } |
6d2dcc99 | 1242 | break; |
15637ed4 | 1243 | |
6d2dcc99 | 1244 | case DIOCWLABEL: |
15637ed4 | 1245 | du->dk_flags &= ~DKFL_WRITEPROT; |
6d2dcc99 NW |
1246 | if ((flag & FWRITE) == 0) |
1247 | error = EBADF; | |
1248 | else | |
1249 | du->dk_wlabel = *(int *)addr; | |
1250 | break; | |
15637ed4 | 1251 | |
6d2dcc99 | 1252 | case DIOCWDINFO: |
15637ed4 | 1253 | du->dk_flags &= ~DKFL_WRITEPROT; |
6d2dcc99 NW |
1254 | if ((flag & FWRITE) == 0) |
1255 | error = EBADF; | |
80d17733 NW |
1256 | else if ((error = setdisklabel(&du->dk_dd, |
1257 | (struct disklabel *)addr, | |
1258 | #if 0 | |
1259 | du->dk_flags & DKFL_BSDLABEL | |
1260 | ? du->dk_openpart : | |
1261 | #endif | |
1262 | 0, | |
1263 | du->dk_dospartitions)) == 0) { | |
1264 | int wlab; | |
15637ed4 RG |
1265 | |
1266 | du->dk_flags |= DKFL_BSDLABEL; | |
80d17733 | 1267 | wdwsetctlr(du); /* XXX - check */ |
15637ed4 | 1268 | |
6d2dcc99 NW |
1269 | /* simulate opening partition 0 so write succeeds */ |
1270 | du->dk_openpart |= (1 << 0); /* XXX */ | |
1271 | wlab = du->dk_wlabel; | |
1272 | du->dk_wlabel = 1; | |
80d17733 NW |
1273 | error = writedisklabel(dev, WDSTRATEGY, &du->dk_dd, |
1274 | du->dk_dospartitions); | |
6d2dcc99 NW |
1275 | du->dk_openpart = du->dk_copenpart | du->dk_bopenpart; |
1276 | du->dk_wlabel = wlab; | |
1277 | } | |
1278 | break; | |
15637ed4 RG |
1279 | |
1280 | #ifdef notyet | |
1281 | case DIOCGDINFOP: | |
1282 | *(struct disklabel **)addr = &(du->dk_dd); | |
1283 | break; | |
1284 | ||
1285 | case DIOCWFORMAT: | |
1286 | if ((flag & FWRITE) == 0) | |
1287 | error = EBADF; | |
1288 | else { | |
1289 | register struct format_op *fop; | |
1290 | ||
1291 | fop = (struct format_op *)addr; | |
1292 | aiov.iov_base = fop->df_buf; | |
1293 | aiov.iov_len = fop->df_count; | |
1294 | auio.uio_iov = &aiov; | |
1295 | auio.uio_iovcnt = 1; | |
1296 | auio.uio_resid = fop->df_count; | |
1297 | auio.uio_segflg = 0; | |
1298 | auio.uio_offset = | |
80d17733 NW |
1299 | fop->df_startblk * du->dk_dd.d_secsize; |
1300 | #error /* XXX the 386BSD interface is different */ | |
1301 | error = physio(wdformat, &rwdbuf[lunit], 0, dev, | |
1302 | B_WRITE, minphys, &auio); | |
15637ed4 RG |
1303 | fop->df_count -= auio.uio_resid; |
1304 | fop->df_reg[0] = du->dk_status; | |
1305 | fop->df_reg[1] = du->dk_error; | |
1306 | } | |
1307 | break; | |
1308 | #endif | |
1309 | ||
1310 | default: | |
1311 | error = ENOTTY; | |
1312 | break; | |
1313 | } | |
1314 | return (error); | |
1315 | } | |
1316 | ||
80d17733 | 1317 | #ifdef B_FORMAT |
15637ed4 RG |
1318 | int |
1319 | wdformat(struct buf *bp) | |
1320 | { | |
1321 | ||
1322 | bp->b_flags |= B_FORMAT; | |
1323 | return (wdstrategy(bp)); | |
1324 | } | |
1325 | #endif | |
1326 | ||
1327 | int | |
1328 | wdsize(dev_t dev) | |
1329 | { | |
80d17733 | 1330 | int lunit = wdunit(dev), part = wdpart(dev), val; |
15637ed4 RG |
1331 | struct disk *du; |
1332 | ||
80d17733 NW |
1333 | if (lunit >= NWD || wddospart(dev) || (du = wddrives[lunit]) == NULL) |
1334 | return (-1); | |
6d2dcc99 | 1335 | val = 0; |
80d17733 NW |
1336 | if (du->dk_state == CLOSED) |
1337 | val = wdopen(makewddev(major(dev), lunit, WDRAW), | |
1338 | FREAD, S_IFBLK, 0); | |
1339 | if (val != 0 || du->dk_flags & DKFL_WRITEPROT) | |
15637ed4 | 1340 | return (-1); |
80d17733 | 1341 | return ((int)du->dk_dd.d_partitions[part].p_size); |
15637ed4 RG |
1342 | } |
1343 | ||
80d17733 | 1344 | extern char *vmmap; /* poor name! */ |
15637ed4 | 1345 | |
80d17733 NW |
1346 | /* |
1347 | * Dump core after a system crash. | |
1348 | */ | |
15637ed4 | 1349 | int |
80d17733 | 1350 | wddump(dev_t dev) |
15637ed4 | 1351 | { |
80d17733 | 1352 | register struct disk *du; |
15637ed4 | 1353 | register struct bt_bad *bt_ptr; |
80d17733 NW |
1354 | struct disklabel *lp; |
1355 | long num; /* number of sectors to write */ | |
1356 | int lunit, part; | |
6d2dcc99 | 1357 | long blkoff, blknum; |
80d17733 | 1358 | long blkchk, blkcnt, blknext; |
6d2dcc99 | 1359 | long cylin, head, sector; |
80d17733 NW |
1360 | long secpertrk, secpercyl, nblocks; |
1361 | char *addr; | |
1362 | extern int Maxmem; | |
1363 | static int wddoingadump = 0; | |
15637ed4 RG |
1364 | extern caddr_t CADDR1; |
1365 | ||
80d17733 NW |
1366 | /* Toss any characters present prior to dump. */ |
1367 | while (sgetc(1) & 0xff) /* EWS: A hack to work with syscons */ | |
15637ed4 RG |
1368 | ; |
1369 | ||
80d17733 NW |
1370 | /* Check for acceptable device. */ |
1371 | /* XXX should reset to maybe allow du->dk_state < OPEN. */ | |
1372 | lunit = wdunit(dev); /* eventually support floppies? */ | |
1373 | part = wdpart(dev); | |
1374 | if (lunit >= NWD || wddospart(dev) || (du = wddrives[lunit]) == NULL | |
1375 | || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT) | |
1376 | return (ENXIO); | |
15637ed4 | 1377 | |
80d17733 NW |
1378 | /* Size of memory to dump, in disk sectors. */ |
1379 | num = (u_long)Maxmem * NBPG / du->dk_dd.d_secsize; | |
15637ed4 RG |
1380 | |
1381 | secpertrk = du->dk_dd.d_nsectors; | |
1382 | secpercyl = du->dk_dd.d_secpercyl; | |
1383 | nblocks = du->dk_dd.d_partitions[part].p_size; | |
1384 | blkoff = du->dk_dd.d_partitions[part].p_offset; | |
1385 | ||
80d17733 NW |
1386 | #if 0 |
1387 | pg("part %x, nblocks %d, dumplo %d num %d\n", | |
1388 | part, nblocks, dumplo, num); | |
1389 | #endif | |
1390 | ||
1391 | /* Check transfer bounds against partition size. */ | |
1392 | if (dumplo < 0 || dumplo + num > nblocks) | |
1393 | return (EINVAL); | |
1394 | ||
1395 | /* Check if we are being called recursively. */ | |
1396 | if (wddoingadump) | |
1397 | return (EFAULT); | |
15637ed4 | 1398 | |
6d2dcc99 | 1399 | #if 0 |
80d17733 NW |
1400 | /* Mark controller active for if we panic during the dump. */ |
1401 | wdtab[du->dk_ctrlr].b_active = 1; | |
6d2dcc99 | 1402 | #endif |
80d17733 NW |
1403 | wddoingadump = 1; |
1404 | ||
1405 | /* Recalibrate the drive. */ | |
1406 | DELAY(5); /* ATA spec XXX NOT */ | |
1407 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 | |
1408 | || wdwait(du, WDCS_READY | WDCS_SEEKCMPLT) != 0 | |
1409 | || wdsetctlr(du) != 0) { | |
1410 | wderror((struct buf *)NULL, du, "wddump: recalibrate failed"); | |
1411 | return (EIO); | |
1412 | } | |
6d2dcc99 | 1413 | |
80d17733 NW |
1414 | du->dk_flags |= DKFL_SINGLE; |
1415 | addr = (char *) 0; | |
15637ed4 RG |
1416 | blknum = dumplo + blkoff; |
1417 | while (num > 0) { | |
80d17733 NW |
1418 | blkcnt = num; |
1419 | if (blkcnt > MAXTRANSFER) | |
1420 | blkcnt = MAXTRANSFER; | |
1421 | /* Keep transfer within current cylinder. */ | |
15637ed4 RG |
1422 | if ((blknum + blkcnt - 1) / secpercyl != blknum / secpercyl) |
1423 | blkcnt = secpercyl - (blknum % secpercyl); | |
80d17733 | 1424 | blknext = blknum + blkcnt; |
15637ed4 | 1425 | |
15637ed4 | 1426 | /* |
80d17733 NW |
1427 | * See if one of the sectors is in the bad sector list |
1428 | * (if we have one). If the first sector is bad, then | |
1429 | * reduce the transfer to this one bad sector; if another | |
1430 | * sector is bad, then reduce reduce the transfer to | |
1431 | * avoid any bad sectors. | |
15637ed4 | 1432 | */ |
80d17733 NW |
1433 | if ((du->dk_flags & (DKFL_SINGLE | DKFL_BADSECT)) |
1434 | == (DKFL_SINGLE | DKFL_BADSECT)) | |
1435 | for (blkchk = blknum; blkchk < blknum + blkcnt; blkchk++) { | |
1436 | cylin = blkchk / secpercyl; | |
1437 | head = (blkchk % secpercyl) / secpertrk; | |
1438 | sector = blkchk % secpertrk; | |
1439 | for (bt_ptr = du->dk_bad.bt_bad; | |
1440 | bt_ptr->bt_cyl != BAD144_NO_CYL; bt_ptr++) { | |
15637ed4 | 1441 | if (bt_ptr->bt_cyl > cylin) |
80d17733 NW |
1442 | /* |
1443 | * Sorted list, and we passed our cylinder. | |
1444 | * quit. | |
1445 | */ | |
15637ed4 RG |
1446 | break; |
1447 | if (bt_ptr->bt_cyl == cylin && | |
80d17733 NW |
1448 | bt_ptr->bt_trksec == (head << 8) + sector) { |
1449 | /* Found bad block. */ | |
1450 | blkcnt = blkchk - blknum; | |
1451 | if (blkcnt > 0) { | |
1452 | blknext = blknum + blkcnt; | |
1453 | goto out; | |
1454 | } | |
1455 | blkcnt = 1; | |
1456 | blknext = blknum + blkcnt; | |
15637ed4 | 1457 | /* |
80d17733 | 1458 | * Found bad block. Calculate new block number. |
15637ed4 RG |
1459 | * This starts at the end of the disk (skip the |
1460 | * last track which is used for the bad block list), | |
1461 | * and works backwards to the front of the disk. | |
1462 | */ | |
80d17733 NW |
1463 | /* XXX as usual. */ |
1464 | #ifdef WDDEBUG | |
1465 | printf("--- badblock code -> Old = %ld; ", | |
1466 | blknum); | |
1467 | #endif | |
1468 | lp = &du->dk_dd; | |
6d2dcc99 NW |
1469 | if (lp->d_partitions[BSD_PART].p_offset != 0) |
1470 | blknum = lp->d_partitions[BAD144_PART] | |
1471 | .p_offset | |
1472 | + lp->d_partitions[BAD144_PART] | |
1473 | .p_size; | |
1474 | else | |
1475 | blknum = lp->d_secperunit; | |
80d17733 | 1476 | blknum -= lp->d_nsectors |
6d2dcc99 | 1477 | + (bt_ptr - du->dk_bad.bt_bad) + 1; |
80d17733 NW |
1478 | #ifdef WDDEBUG |
1479 | printf("new = %ld\n", blknum); | |
1480 | #endif | |
15637ed4 RG |
1481 | break; |
1482 | } | |
80d17733 NW |
1483 | } |
1484 | } | |
1485 | out: | |
1486 | ||
1487 | /* Compute disk address. */ | |
1488 | cylin = blknum / secpercyl; | |
1489 | head = (blknum % secpercyl) / secpertrk; | |
1490 | sector = blknum % secpertrk; | |
6d2dcc99 | 1491 | |
80d17733 NW |
1492 | #if 0 |
1493 | /* Let's just talk about this first... */ | |
1494 | pg("cylin l%d head %ld sector %ld addr 0x%x count %ld", | |
1495 | cylin, head, sector, addr, blkcnt); | |
1496 | #endif | |
15637ed4 | 1497 | |
80d17733 NW |
1498 | /* Do the write. */ |
1499 | if (wdcommand(du, cylin, head, sector, blkcnt, WDCC_WRITE) | |
1500 | != 0) { | |
1501 | wderror((struct buf *)NULL, du, | |
1502 | "wddump: timeout waiting to to give command"); | |
1503 | return (EIO); | |
1504 | } | |
1505 | while (blkcnt != 0) { | |
1506 | pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), | |
1507 | VM_PROT_READ, TRUE); | |
1508 | ||
1509 | /* Ready to send data? */ | |
1510 | DELAY(5); /* ATA spec */ | |
1511 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ) | |
1512 | < 0) { | |
1513 | wderror((struct buf *)NULL, du, | |
1514 | "wddump: timeout waiting for DRQ"); | |
1515 | return (EIO); | |
1516 | } | |
1517 | outsw(du->dk_port + wd_data, | |
1518 | CADDR1 + ((int)addr & (NBPG - 1)), | |
1519 | DEV_BSIZE / sizeof(short)); | |
1520 | addr += DEV_BSIZE; | |
1521 | if ((unsigned)addr % (1024 * 1024) == 0) | |
1522 | printf("%ld ", num / (1024 * 1024 / DEV_BSIZE)); | |
1523 | num--; | |
1524 | blkcnt--; | |
1525 | } | |
15637ed4 | 1526 | |
80d17733 NW |
1527 | /* Wait for completion. */ |
1528 | DELAY(5); /* ATA spec XXX NOT */ | |
1529 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT) < 0) { | |
1530 | wderror((struct buf *)NULL, du, | |
1531 | "wddump: timeout waiting for status"); | |
1532 | return (EIO); | |
1533 | } | |
15637ed4 | 1534 | |
80d17733 NW |
1535 | /* Check final status. */ |
1536 | if (du->dk_status | |
1537 | & (WDCS_READY | WDCS_SEEKCMPLT | WDCS_DRQ | WDCS_ERR) | |
1538 | != (WDCS_READY | WDCS_SEEKCMPLT)) { | |
1539 | wderror((struct buf *)NULL, du, | |
1540 | "wddump: extra DRQ, or error"); | |
1541 | return (EIO); | |
15637ed4 | 1542 | } |
80d17733 NW |
1543 | |
1544 | /* Update block count. */ | |
1545 | blknum = blknext; | |
1546 | ||
1547 | /* Operator aborting dump? */ | |
1548 | if (sgetc(1) & 0xff) /* EWS: A hack to work with syscons */ | |
1549 | return (EINTR); | |
15637ed4 | 1550 | } |
80d17733 | 1551 | return (0); |
15637ed4 | 1552 | } |
6d2dcc99 NW |
1553 | |
1554 | static void | |
1555 | wderror(struct buf *bp, struct disk *du, char *mesg) | |
1556 | { | |
1557 | if (bp == NULL) | |
1558 | printf("wd%d: %s:", du->dk_lunit, mesg); | |
1559 | else | |
1560 | diskerr(bp, "wd", mesg, LOG_PRINTF, du->dk_skip, &du->dk_dd); | |
1561 | printf(" status %b error %b\n", | |
80d17733 NW |
1562 | du->dk_status, WDCS_BITS, du->dk_error, WDERR_BITS); |
1563 | } | |
1564 | ||
1565 | /* | |
1566 | * Discard any interrupts that were latched by the interrupt system while | |
1567 | * we were doing polled i/o. | |
1568 | */ | |
1569 | static void | |
1570 | wdflushirq(struct disk *du, int old_ipl) | |
1571 | { | |
1572 | wdtab[du->dk_ctrlr].b_active = 2; | |
1573 | splx(old_ipl); | |
1574 | (void)splbio(); | |
1575 | wdtab[du->dk_ctrlr].b_active = 0; | |
6d2dcc99 NW |
1576 | } |
1577 | ||
1578 | /* | |
1579 | * Reset the controller. | |
1580 | */ | |
1581 | static int | |
1582 | wdreset(struct disk *du) | |
1583 | { | |
80d17733 | 1584 | int wdc; |
6d2dcc99 NW |
1585 | |
1586 | wdc = du->dk_port; | |
1587 | (void)wdwait(du, 0); | |
1588 | outb(wdc + wd_ctlr, WDCTL_IDS | WDCTL_RST); | |
1589 | DELAY(10 * 1000); | |
1590 | outb(wdc + wd_ctlr, WDCTL_IDS); | |
1591 | if (wdwait(du, WDCS_READY | WDCS_SEEKCMPLT) != 0 | |
1592 | || (du->dk_error = inb(wdc + wd_error)) != 0x01) | |
1593 | return (1); | |
1594 | outb(wdc + wd_ctlr, WDCTL_4BIT); | |
1595 | return (0); | |
1596 | } | |
1597 | ||
1598 | /* | |
1599 | * Sleep until driver is inactive. | |
1600 | * This is used only for avoiding rare race conditions, so it is unimportant | |
1601 | * that the sleep may be far too short or too long. | |
1602 | */ | |
1603 | static void | |
1604 | wdsleep(int ctrlr, char *wmesg) | |
1605 | { | |
1606 | while (wdtab[ctrlr].b_active) | |
1607 | tsleep((caddr_t)&wdtab[ctrlr].b_active, PZERO - 1, wmesg, 1); | |
1608 | } | |
1609 | ||
80d17733 NW |
1610 | /* XXX void */ |
1611 | static int | |
1612 | wdtimeout(caddr_t cdu, int ticks) | |
1613 | { | |
1614 | struct disk *du; | |
1615 | int x; | |
1616 | ||
1617 | du = (struct disk *)cdu; | |
1618 | x = splbio(); | |
1619 | if (du->dk_timeout != 0 && --du->dk_timeout == 0) { | |
1620 | wderror((struct buf *)NULL, du, "interrupt timeout"); | |
1621 | wdunwedge(du); | |
1622 | wdflushirq(du, x); | |
1623 | du->dk_skip = 0; | |
1624 | du->dk_flags |= DKFL_SINGLE; | |
1625 | wdstart(du->dk_ctrlr); | |
1626 | } | |
1627 | timeout(wdtimeout, cdu, hz); | |
1628 | splx(x); | |
1629 | return (0); | |
1630 | } | |
1631 | ||
6d2dcc99 NW |
1632 | /* |
1633 | * Reset the controller after it has become wedged. This is different from | |
1634 | * wdreset() so that wdreset() can be used in the probe and so that this | |
1635 | * can restore the geometry . | |
1636 | */ | |
1637 | static int | |
1638 | wdunwedge(struct disk *du) | |
1639 | { | |
1640 | struct disk *du1; | |
80d17733 | 1641 | int lunit; |
6d2dcc99 NW |
1642 | |
1643 | /* Schedule other drives for recalibration. */ | |
1644 | for (lunit = 0; lunit < NWD; lunit++) | |
1645 | if ((du1 = wddrives[lunit]) != NULL && du1 != du | |
1646 | && du1->dk_ctrlr == du->dk_ctrlr | |
1647 | && du1->dk_state > WANTOPEN) | |
1648 | du1->dk_state = WANTOPEN; | |
1649 | ||
1650 | DELAY(RECOVERYTIME); | |
1651 | if (wdreset(du) == 0) { | |
1652 | /* | |
1653 | * XXX - recalibrate current drive now because some callers | |
1654 | * aren't prepared to have its state change. | |
1655 | */ | |
1656 | if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) == 0 | |
1657 | && wdwait(du, WDCS_READY | WDCS_SEEKCMPLT) == 0 | |
1658 | && wdsetctlr(du) == 0) | |
1659 | return (0); | |
1660 | } | |
1661 | wderror((struct buf *)NULL, du, "wdunwedge failed"); | |
1662 | return (1); | |
1663 | } | |
1664 | ||
1665 | /* | |
1666 | * Wait uninterruptibly until controller is not busy and either certain | |
1667 | * status bits are set or an error has occurred. | |
1668 | * The wait is usually short unless it is for the controller to process | |
1669 | * an entire critical command. | |
1670 | * Return 1 for (possibly stale) controller errors, -1 for timeout errors, | |
1671 | * or 0 for no errors. | |
1672 | * Return controller status in du->dk_status and, if there was a controller | |
1673 | * error, return the error code in du->dk_error. | |
1674 | */ | |
80d17733 | 1675 | #ifdef WD_COUNT_RETRIES |
6d2dcc99 | 1676 | static int min_retries[NWDC]; |
80d17733 NW |
1677 | #endif |
1678 | ||
6d2dcc99 NW |
1679 | static int |
1680 | wdwait(struct disk *du, u_char bits_wanted) | |
1681 | { | |
80d17733 NW |
1682 | int retries; |
1683 | int wdc; | |
1684 | u_char status; | |
1685 | ||
6d2dcc99 | 1686 | #define POLLING 1000 |
80d17733 | 1687 | #define TIMEOUT 2000 /* WDCC_DIAGNOSE can take > 300 msec */ |
6d2dcc99 NW |
1688 | |
1689 | wdc = du->dk_port; | |
1690 | retries = POLLING + TIMEOUT; | |
1691 | do { | |
80d17733 NW |
1692 | #ifdef WD_COUNT_RETRIES |
1693 | if (min_retries[du->dk_ctrlr] > retries | |
1694 | || min_retries[du->dk_ctrlr] == 0) | |
1695 | min_retries[du->dk_ctrlr] = retries; | |
1696 | #endif | |
1697 | DELAY(5); /* ATA spec XXX NOT */ | |
6d2dcc99 NW |
1698 | du->dk_status = status = inb(wdc + wd_status); |
1699 | if (!(status & WDCS_BUSY)) { | |
1700 | if (status & WDCS_ERR) { | |
1701 | du->dk_error = inb(wdc + wd_error); | |
1702 | /* | |
1703 | * We once returned here. This is wrong | |
1704 | * because the error bit is apparently only | |
1705 | * valid after the controller has interrupted | |
1706 | * (e.g., the error bit is stale when we wait | |
1707 | * for DRQ for writes). So we can't depend | |
1708 | * on the error bit at all when polling for | |
1709 | * command completion. | |
1710 | */ | |
1711 | } | |
1712 | if ((status & bits_wanted) == bits_wanted) | |
1713 | return (status & WDCS_ERR); | |
1714 | } | |
1715 | if (retries < TIMEOUT) | |
1716 | /* | |
1717 | * Switch to a polling rate of about 1 KHz so that | |
1718 | * the timeout is almost machine-independent. The | |
1719 | * controller is taking a long time to respond, so | |
1720 | * an extra msec won't matter. | |
1721 | */ | |
1722 | DELAY(1000); | |
1723 | } while (--retries != 0); | |
1724 | return (-1); | |
1725 | } | |
1726 | ||
80d17733 | 1727 | #endif /* NWDC > 0 */ |