xd.c revision 1.13
1 /* $NetBSD: xd.c,v 1.13 1997/06/18 20:45:03 pk Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x d . c x y l o g i c s 7 5 3 / 7 0 5 3 v m e / s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: $NetBSD: xd.c,v 1.13 1997/06/18 20:45:03 pk Exp $ 40 * started: 27-Feb-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * 46 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 47 * the time to answer some of my questions about the 753/7053. 48 * 49 * note: the 753 and the 7053 are programmed the same way, but are 50 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 51 * VME card (found in many VME based suns). 52 */ 53 54 #undef XDC_DEBUG /* full debug */ 55 #define XDC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 57 #define XDC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <machine/autoconf.h> 81 #include <machine/sun_disklabel.h> 82 #include <machine/dvma.h> 83 84 #include <sun3/dev/xdreg.h> 85 #include <sun3/dev/xdvar.h> 86 #include <sun3/dev/xio.h> 87 88 /* 89 * macros 90 */ 91 92 /* 93 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 94 */ 95 #define XDC_TWAIT(SC, N) { \ 96 (SC)->waitq[(SC)->waitend] = (N); \ 97 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 98 (SC)->nwait++; \ 99 } 100 101 /* 102 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 103 */ 104 #define XDC_HWAIT(SC, N) { \ 105 (SC)->waithead = ((SC)->waithead == 0) ? \ 106 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 107 (SC)->waitq[(SC)->waithead] = (N); \ 108 (SC)->nwait++; \ 109 } 110 111 /* 112 * XDC_GET_WAITER: gets the first request waiting on the waitq 113 * and removes it (so it can be submitted) 114 */ 115 #define XDC_GET_WAITER(XDCSC, RQ) { \ 116 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 117 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 118 xdcsc->nwait--; \ 119 } 120 121 /* 122 * XDC_FREE: add iorq "N" to SC's free list 123 */ 124 #define XDC_FREE(SC, N) { \ 125 (SC)->freereq[(SC)->nfree++] = (N); \ 126 (SC)->reqs[N].mode = 0; \ 127 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 128 } 129 130 131 /* 132 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 133 */ 134 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 135 136 /* 137 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 138 */ 139 #define XDC_GO(XDC, ADDR) { \ 140 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 141 (ADDR) = ((ADDR) >> 8); \ 142 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 143 (ADDR) = ((ADDR) >> 8); \ 144 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 145 (ADDR) = ((ADDR) >> 8); \ 146 (XDC)->xdc_iopbaddr3 = (ADDR); \ 147 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 148 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 149 } 150 151 /* 152 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 153 * LCV is a counter. If it goes to zero then we timed out. 154 */ 155 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 156 (LCV) = (TIME); \ 157 while ((LCV) > 0) { \ 158 if ((XDC)->xdc_csr & (BITS)) break; \ 159 (LCV) = (LCV) - 1; \ 160 DELAY(1); \ 161 } \ 162 } 163 164 /* 165 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 166 */ 167 #define XDC_DONE(SC,RQ,ER) { \ 168 if ((RQ) == XD_ERR_FAIL) { \ 169 (ER) = (RQ); \ 170 } else { \ 171 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 172 wakeup(&(SC)->ndone); \ 173 (ER) = (SC)->reqs[RQ].errno; \ 174 XDC_FREE((SC), (RQ)); \ 175 } \ 176 } 177 178 /* 179 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 180 */ 181 #define XDC_ADVANCE(IORQ, N) { \ 182 if (N) { \ 183 (IORQ)->sectcnt -= (N); \ 184 (IORQ)->blockno += (N); \ 185 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 186 } \ 187 } 188 189 /* 190 * note - addresses you can sleep on: 191 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 192 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 193 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 194 * to drop below XDC_SUBWAITLIM) 195 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 196 */ 197 198 199 /* 200 * function prototypes 201 * "xdc_*" functions are internal, all others are external interfaces 202 */ 203 204 /* internals */ 205 int xdc_cmd __P((struct xdc_softc *, int, int, int, int, int, char *, int)); 206 char *xdc_e2str __P((int)); 207 int xdc_error __P((struct xdc_softc *, struct xd_iorq *, 208 struct xd_iopb *, int, int)); 209 int xdc_ioctlcmd __P((struct xd_softc *, dev_t dev, struct xd_iocmd *)); 210 void xdc_perror __P((struct xd_iorq *, struct xd_iopb *, int)); 211 int xdc_piodriver __P((struct xdc_softc *, int, int)); 212 int xdc_remove_iorq __P((struct xdc_softc *)); 213 int xdc_reset __P((struct xdc_softc *, int, int, int, struct xd_softc *)); 214 inline void xdc_rqinit __P((struct xd_iorq *, struct xdc_softc *, 215 struct xd_softc *, int, u_long, int, 216 caddr_t, struct buf *)); 217 void xdc_rqtopb __P((struct xd_iorq *, struct xd_iopb *, int, int)); 218 int xdc_start __P((struct xdc_softc *, int)); 219 int xdc_startbuf __P((struct xdc_softc *, struct xd_softc *, struct buf *)); 220 int xdc_submit_iorq __P((struct xdc_softc *, int, int)); 221 void xdc_tick __P((void *)); 222 int xdc_xdreset __P((struct xdc_softc *, struct xd_softc *)); 223 224 /* machine interrupt hook */ 225 int xdcintr __P((void *)); 226 227 /* bdevsw, cdevsw */ 228 bdev_decl(xd); 229 cdev_decl(xd); 230 231 /* autoconf */ 232 int xdcmatch __P((struct device *, struct cfdata *, void *)); 233 void xdcattach __P((struct device *, struct device *, void *)); 234 int xdmatch __P((struct device *, struct cfdata *, void *)); 235 void xdattach __P((struct device *, struct device *, void *)); 236 int xdc_print __P((void *, char *name)); 237 238 static void xddummystrat __P((struct buf *)); 239 int xdgetdisklabel __P((struct xd_softc *, void *)); 240 241 /* 242 * cfdrivers: device driver interface to autoconfig 243 */ 244 245 struct cfattach xdc_ca = { 246 sizeof(struct xdc_softc), xdcmatch, xdcattach 247 }; 248 249 struct cfdriver xdc_cd = { 250 NULL, "xdc", DV_DULL 251 }; 252 253 struct cfattach xd_ca = { 254 sizeof(struct xd_softc), xdmatch, xdattach 255 }; 256 257 struct cfdriver xd_cd = { 258 NULL, "xd", DV_DISK 259 }; 260 261 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 262 int driveno; /* unit number */ 263 char *dvmabuf; /* scratch buffer for reading disk label */ 264 int fullmode; /* submit mode */ 265 int booting; /* are we booting or not? */ 266 }; 267 268 /* 269 * dkdriver 270 */ 271 272 struct dkdriver xddkdriver = {xdstrategy}; 273 274 /* 275 * start: disk label fix code (XXX) 276 */ 277 278 static void *xd_labeldata; 279 280 static void 281 xddummystrat(bp) 282 struct buf *bp; 283 { 284 if (bp->b_bcount != XDFM_BPS) 285 panic("xddummystrat"); 286 bcopy(xd_labeldata, bp->b_un.b_addr, XDFM_BPS); 287 bp->b_flags |= B_DONE; 288 bp->b_flags &= ~B_BUSY; 289 } 290 291 int 292 xdgetdisklabel(xd, b) 293 struct xd_softc *xd; 294 void *b; 295 { 296 char *err; 297 struct sun_disklabel *sdl; 298 299 /* We already have the label data in `b'; setup for dummy strategy */ 300 xd_labeldata = b; 301 302 /* Required parameter for readdisklabel() */ 303 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 304 305 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 306 xddummystrat, 307 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 308 if (err) { 309 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 310 return(XD_ERR_FAIL); 311 } 312 313 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 314 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 315 if (sdl->sl_magic == SUN_DKMAGIC) 316 xd->pcyl = sdl->sl_pcyl; 317 else { 318 printf("%s: WARNING: no `pcyl' in disk label.\n", 319 xd->sc_dev.dv_xname); 320 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 321 xd->sc_dk.dk_label->d_acylinders; 322 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 323 xd->sc_dev.dv_xname, xd->pcyl); 324 } 325 326 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 327 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 328 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 329 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 330 xd->sectpercyl = xd->nhead * xd->nsect; 331 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 332 * sun->bsd */ 333 return(XD_ERR_AOK); 334 } 335 336 /* 337 * end: disk label fix code (XXX) 338 */ 339 340 /* 341 * a u t o c o n f i g f u n c t i o n s 342 */ 343 344 /* 345 * xdcmatch: determine if xdc is present or not. we do a 346 * soft reset to detect the xdc. 347 */ 348 349 int xdcmatch(parent, cf, aux) 350 struct device *parent; 351 struct cfdata *cf; 352 void *aux; 353 { 354 struct confargs *ca = aux; 355 int x; 356 357 if (ca->ca_bustype != BUS_VME32) 358 return (0); 359 360 /* Default interrupt priority always splbio==2 */ 361 if (ca->ca_intpri == -1) 362 ca->ca_intpri = 2; 363 364 x = bus_peek(ca->ca_bustype, ca->ca_paddr + 11, 1); 365 if (x == -1) 366 return (0); 367 368 return (1); 369 } 370 371 /* 372 * xdcattach: attach controller 373 */ 374 void 375 xdcattach(parent, self, aux) 376 struct device *parent, *self; 377 void *aux; 378 379 { 380 struct xdc_softc *xdc = (void *) self; 381 struct confargs *ca = aux; 382 struct xdc_attach_args xa; 383 int lcv, rqno, err, pri; 384 struct xd_iopb_ctrl *ctl; 385 386 /* get addressing and intr level stuff from autoconfig and load it 387 * into our xdc_softc. */ 388 389 xdc->xdc = (struct xdc *) 390 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xdc)); 391 xdc->ipl = ca->ca_intpri; 392 xdc->vector = ca->ca_intvec; 393 394 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 395 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 396 397 /* allocate and zero buffers 398 * 399 * note: we simplify the code by allocating the max number of iopbs and 400 * iorq's up front. thus, we avoid linked lists and the costs 401 * associated with them in exchange for wasting a little memory. */ 402 403 xdc->iopbase = (struct xd_iopb *) 404 dvma_malloc(XDC_MAXIOPB * sizeof(struct xd_iopb)); /* KVA */ 405 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 406 xdc->dvmaiopb = (struct xd_iopb *) 407 dvma_kvtopa((long) xdc->iopbase, BUS_VME32); 408 xdc->reqs = (struct xd_iorq *) 409 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), M_DEVBUF, M_NOWAIT); 410 if (xdc->reqs == NULL) 411 panic("xdc malloc"); 412 bzero(xdc->reqs, XDC_MAXIOPB * sizeof(struct xd_iorq)); 413 414 /* init free list, iorq to iopb pointers, and non-zero fields in the 415 * iopb which never change. */ 416 417 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 418 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 419 xdc->freereq[lcv] = lcv; 420 xdc->iopbase[lcv].fixd = 1; /* always the same */ 421 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 422 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 423 } 424 xdc->nfree = XDC_MAXIOPB; 425 xdc->nrun = 0; 426 xdc->waithead = xdc->waitend = xdc->nwait = 0; 427 xdc->ndone = 0; 428 429 /* init queue of waiting bufs */ 430 431 xdc->sc_wq.b_active = 0; 432 xdc->sc_wq.b_actf = 0; 433 xdc->sc_wq.b_actb = &xdc->sc_wq.b_actf; 434 435 /* 436 * section 7 of the manual tells us how to init the controller: 437 * - read controller parameters (6/0) 438 * - write controller parameters (5/0) 439 */ 440 441 /* read controller parameters and insure we have a 753/7053 */ 442 443 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 444 if (rqno == XD_ERR_FAIL) { 445 printf(": couldn't read controller params\n"); 446 return; /* shouldn't ever happen */ 447 } 448 ctl = (struct xd_iopb_ctrl *) & xdc->iopbase[rqno]; 449 if (ctl->ctype != XDCT_753) { 450 if (xdc->reqs[rqno].errno) 451 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 452 printf(": doesn't identify as a 753/7053\n"); 453 XDC_DONE(xdc, rqno, err); 454 return; 455 } 456 printf(": Xylogics 753/7053, PROM=%x.%02x.%02x\n", 457 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 458 XDC_DONE(xdc, rqno, err); 459 460 /* now write controller parameters (xdc_cmd sets all params for us) */ 461 462 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 463 XDC_DONE(xdc, rqno, err); 464 if (err) { 465 printf("%s: controller config error: %s\n", 466 xdc->sc_dev.dv_xname, xdc_e2str(err)); 467 return; 468 } 469 470 /* link in interrupt with higher level software */ 471 isr_add_vectored(xdcintr, (void *)xdc, 472 ca->ca_intpri, ca->ca_intvec); 473 evcnt_attach(&xdc->sc_dev, "intr", &xdc->sc_intrcnt); 474 475 /* now we must look for disks using autoconfig */ 476 xa.dvmabuf = (char *) dvma_malloc(XDFM_BPS); 477 xa.fullmode = XD_SUB_POLL; 478 xa.booting = 1; 479 480 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 481 (void) config_found(self, (void *) &xa, xdc_print); 482 483 dvma_free(xa.dvmabuf, XDFM_BPS); 484 485 /* start the watchdog clock */ 486 timeout(xdc_tick, xdc, XDC_TICKCNT); 487 } 488 489 int 490 xdc_print(aux, name) 491 void *aux; 492 char *name; 493 { 494 struct xdc_attach_args *xa = aux; 495 496 if (name != NULL) 497 printf("%s: ", name); 498 499 if (xa->driveno != -1) 500 printf(" drive %d", xa->driveno); 501 502 return UNCONF; 503 } 504 505 /* 506 * xdmatch: probe for disk. 507 * 508 * note: we almost always say disk is present. this allows us to 509 * spin up and configure a disk after the system is booted (we can 510 * call xdattach!). 511 */ 512 int 513 xdmatch(parent, cf, aux) 514 struct device *parent; 515 struct cfdata *cf; 516 void *aux; 517 518 { 519 struct xdc_softc *xdc = (void *) parent; 520 struct xdc_attach_args *xa = aux; 521 522 /* looking for autoconf wildcard or exact match */ 523 524 if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != xa->driveno) 525 return 0; 526 527 return 1; 528 529 } 530 531 /* 532 * xdattach: attach a disk. this can be called from autoconf and also 533 * from xdopen/xdstrategy. 534 */ 535 void 536 xdattach(parent, self, aux) 537 struct device *parent, *self; 538 void *aux; 539 540 { 541 struct xd_softc *xd = (void *) self; 542 struct xdc_softc *xdc = (void *) parent; 543 struct xdc_attach_args *xa = aux; 544 int rqno, err, spt, mb, blk, lcv, fmode, s, newstate; 545 struct xd_iopb_drive *driopb; 546 struct dkbad *dkb; 547 struct bootpath *bp; 548 549 /* 550 * Always re-initialize the disk structure. We want statistics 551 * to start with a clean slate. 552 */ 553 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 554 xd->sc_dk.dk_driver = &xddkdriver; 555 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 556 557 /* if booting, init the xd_softc */ 558 559 if (xa->booting) { 560 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 561 xd->flags = 0; 562 xd->parent = xdc; 563 } 564 xd->xd_drive = xa->driveno; 565 fmode = xa->fullmode; 566 xdc->sc_drives[xa->driveno] = xd; 567 568 /* if not booting, make sure we are the only process in the attach for 569 * this drive. if locked out, sleep on it. */ 570 571 if (!xa->booting) { 572 s = splbio(); 573 while (xd->state == XD_DRIVE_ATTACHING) { 574 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 575 splx(s); 576 return; 577 } 578 } 579 printf("%s at %s", 580 xd->sc_dev.dv_xname, 581 xd->parent->sc_dev.dv_xname); 582 } 583 /* we now have control */ 584 585 xd->state = XD_DRIVE_ATTACHING; 586 newstate = XD_DRIVE_UNKNOWN; 587 588 /* first try and reset the drive */ 589 590 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 591 XDC_DONE(xdc, rqno, err); 592 if (err == XD_ERR_NRDY) { 593 printf(" drive %d: off-line\n", xa->driveno); 594 goto done; 595 } 596 if (err) { 597 printf(": ERROR 0x%02x (%s)\n", err, xdc_e2str(err)); 598 goto done; 599 } 600 printf(" drive %d: ready\n", xa->driveno); 601 602 /* now set format parameters */ 603 604 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 605 XDC_DONE(xdc, rqno, err); 606 if (err) { 607 printf("%s: write format parameters failed: %s\n", 608 xd->sc_dev.dv_xname, xdc_e2str(err)); 609 goto done; 610 } 611 612 /* get drive parameters */ 613 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 614 if (rqno != XD_ERR_FAIL) { 615 driopb = (struct xd_iopb_drive *) & xdc->iopbase[rqno]; 616 spt = driopb->sectpertrk; 617 } 618 XDC_DONE(xdc, rqno, err); 619 if (err) { 620 printf("%s: read drive parameters failed: %s\n", 621 xd->sc_dev.dv_xname, xdc_e2str(err)); 622 goto done; 623 } 624 625 /* 626 * now set drive parameters (to semi-bogus values) so we can read the 627 * disk label. 628 */ 629 xd->pcyl = xd->ncyl = 1; 630 xd->acyl = 0; 631 xd->nhead = 1; 632 xd->nsect = 1; 633 xd->sectpercyl = 1; 634 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 635 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 636 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 637 XDC_DONE(xdc, rqno, err); 638 if (err) { 639 printf("%s: write drive parameters failed: %s\n", 640 xd->sc_dev.dv_xname, xdc_e2str(err)); 641 goto done; 642 } 643 644 /* read disk label */ 645 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, 646 xa->dvmabuf, fmode); 647 XDC_DONE(xdc, rqno, err); 648 if (err) { 649 printf("%s: reading disk label failed: %s\n", 650 xd->sc_dev.dv_xname, xdc_e2str(err)); 651 goto done; 652 } 653 newstate = XD_DRIVE_NOLABEL; 654 655 xd->hw_spt = spt; 656 /* Attach the disk: must be before getdisklabel to malloc label */ 657 disk_attach(&xd->sc_dk); 658 659 if (xdgetdisklabel(xd, xa->dvmabuf) != XD_ERR_AOK) 660 goto done; 661 662 /* inform the user of what is up */ 663 printf("%s: <%s>, pcyl %d, hw_spt %d\n", 664 xd->sc_dev.dv_xname, 665 xa->dvmabuf, xd->pcyl, spt); 666 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 667 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 668 xd->sc_dev.dv_xname, mb, 669 xd->ncyl, xd->nhead, xd->nsect, XDFM_BPS); 670 671 /* now set the real drive parameters! */ 672 673 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 674 XDC_DONE(xdc, rqno, err); 675 if (err) { 676 printf("%s: write real drive parameters failed: %s\n", 677 xd->sc_dev.dv_xname, xdc_e2str(err)); 678 goto done; 679 } 680 newstate = XD_DRIVE_ONLINE; 681 682 /* 683 * read bad144 table. this table resides on the first sector of the 684 * last track of the disk (i.e. second cyl of "acyl" area). 685 */ 686 687 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 688 (xd->nhead - 1) * xd->nsect; /* last head */ 689 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, xa->dvmabuf, fmode); 690 XDC_DONE(xdc, rqno, err); 691 if (err) { 692 printf("%s: reading bad144 failed: %s\n", 693 xd->sc_dev.dv_xname, xdc_e2str(err)); 694 goto done; 695 } 696 697 /* check dkbad for sanity */ 698 dkb = (struct dkbad *) xa->dvmabuf; 699 for (lcv = 0; lcv < 126; lcv++) { 700 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 701 dkb->bt_bad[lcv].bt_cyl == 0) && 702 dkb->bt_bad[lcv].bt_trksec == 0xffff) 703 continue; /* blank */ 704 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 705 break; 706 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 707 break; 708 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 709 break; 710 } 711 if (lcv != 126) { 712 printf("%s: warning: invalid bad144 sector!\n", 713 xd->sc_dev.dv_xname); 714 } else { 715 bcopy(xa->dvmabuf, &xd->dkb, XDFM_BPS); 716 } 717 718 /* XXX - Where is this and what does it do? -gwr */ 719 dk_establish(&xd->sc_dk, &xd->sc_dev); 720 721 done: 722 xd->state = newstate; 723 if (!xa->booting) { 724 wakeup(&xd->state); 725 splx(s); 726 } 727 } 728 729 /* 730 * end of autoconfig functions 731 */ 732 733 /* 734 * { b , c } d e v s w f u n c t i o n s 735 */ 736 737 /* 738 * xdclose: close device 739 */ 740 int 741 xdclose(dev, flag, fmt) 742 dev_t dev; 743 int flag, fmt; 744 745 { 746 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 747 int part = DISKPART(dev); 748 749 /* clear mask bits */ 750 751 switch (fmt) { 752 case S_IFCHR: 753 xd->sc_dk.dk_copenmask &= ~(1 << part); 754 break; 755 case S_IFBLK: 756 xd->sc_dk.dk_bopenmask &= ~(1 << part); 757 break; 758 } 759 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 760 761 return 0; 762 } 763 764 /* 765 * xddump: crash dump system 766 */ 767 int 768 xddump(dev) 769 dev_t dev; 770 771 { 772 int unit, part; 773 struct xd_softc *xd; 774 775 unit = DISKUNIT(dev); 776 if (unit >= xd_cd.cd_ndevs) 777 return ENXIO; 778 part = DISKPART(dev); 779 780 xd = xd_cd.cd_devs[unit]; 781 782 printf("%s%c: crash dump not supported (yet)\n", 783 xd->sc_dev.dv_xname, 'a' + part); 784 785 return ENXIO; 786 787 /* outline: globals: "dumplo" == sector number of partition to start 788 * dump at (convert to physical sector with partition table) 789 * "dumpsize" == size of dump in clicks "physmem" == size of physical 790 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 791 * physmem) 792 * 793 * dump a copy of physical memory to the dump device starting at sector 794 * "dumplo" in the swap partition (make sure > 0). map in pages as 795 * we go. use polled I/O. 796 * 797 * XXX how to handle NON_CONTIG? */ 798 799 } 800 801 /* 802 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 803 */ 804 int 805 xdioctl(dev, command, addr, flag, p) 806 dev_t dev; 807 u_long command; 808 caddr_t addr; 809 int flag; 810 struct proc *p; 811 812 { 813 struct xd_softc *xd; 814 struct xd_iocmd *xio; 815 int error, s, unit; 816 817 unit = DISKUNIT(dev); 818 819 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 820 return (ENXIO); 821 822 /* switch on ioctl type */ 823 824 switch (command) { 825 case DIOCSBAD: /* set bad144 info */ 826 if ((flag & FWRITE) == 0) 827 return EBADF; 828 s = splbio(); 829 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 830 splx(s); 831 return 0; 832 833 case DIOCGDINFO: /* get disk label */ 834 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 835 return 0; 836 837 case DIOCGPART: /* get partition info */ 838 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 839 ((struct partinfo *) addr)->part = 840 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 841 return 0; 842 843 case DIOCSDINFO: /* set disk label */ 844 if ((flag & FWRITE) == 0) 845 return EBADF; 846 error = setdisklabel(xd->sc_dk.dk_label, 847 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 848 xd->sc_dk.dk_cpulabel); 849 if (error == 0) { 850 if (xd->state == XD_DRIVE_NOLABEL) 851 xd->state = XD_DRIVE_ONLINE; 852 } 853 return error; 854 855 case DIOCWLABEL: /* change write status of disk label */ 856 if ((flag & FWRITE) == 0) 857 return EBADF; 858 if (*(int *) addr) 859 xd->flags |= XD_WLABEL; 860 else 861 xd->flags &= ~XD_WLABEL; 862 return 0; 863 864 case DIOCWDINFO: /* write disk label */ 865 if ((flag & FWRITE) == 0) 866 return EBADF; 867 error = setdisklabel(xd->sc_dk.dk_label, 868 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 869 xd->sc_dk.dk_cpulabel); 870 if (error == 0) { 871 if (xd->state == XD_DRIVE_NOLABEL) 872 xd->state = XD_DRIVE_ONLINE; 873 874 /* Simulate opening partition 0 so write succeeds. */ 875 xd->sc_dk.dk_openmask |= (1 << 0); 876 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 877 xdstrategy, xd->sc_dk.dk_label, 878 xd->sc_dk.dk_cpulabel); 879 xd->sc_dk.dk_openmask = 880 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 881 } 882 return error; 883 884 case DIOSXDCMD: 885 xio = (struct xd_iocmd *) addr; 886 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 887 return (error); 888 return (xdc_ioctlcmd(xd, dev, xio)); 889 890 default: 891 return ENOTTY; 892 } 893 } 894 /* 895 * xdopen: open drive 896 */ 897 898 int 899 xdopen(dev, flag, fmt) 900 dev_t dev; 901 int flag, fmt; 902 903 { 904 int unit, part; 905 struct xd_softc *xd; 906 struct xdc_attach_args xa; 907 908 /* first, could it be a valid target? */ 909 910 unit = DISKUNIT(dev); 911 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 912 return (ENXIO); 913 part = DISKPART(dev); 914 915 /* do we need to attach the drive? */ 916 917 if (xd->state == XD_DRIVE_UNKNOWN) { 918 xa.driveno = xd->xd_drive; 919 xa.dvmabuf = (char *) dvma_malloc(XDFM_BPS); 920 xa.fullmode = XD_SUB_WAIT; 921 xa.booting = 0; 922 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 923 dvma_free(xa.dvmabuf, XDFM_BPS); 924 if (xd->state == XD_DRIVE_UNKNOWN) { 925 return (EIO); 926 } 927 } 928 /* check for partition */ 929 930 if (part != RAW_PART && 931 (part >= xd->sc_dk.dk_label->d_npartitions || 932 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 933 return (ENXIO); 934 } 935 /* set open masks */ 936 937 switch (fmt) { 938 case S_IFCHR: 939 xd->sc_dk.dk_copenmask |= (1 << part); 940 break; 941 case S_IFBLK: 942 xd->sc_dk.dk_bopenmask |= (1 << part); 943 break; 944 } 945 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 946 947 return 0; 948 } 949 950 int 951 xdread(dev, uio) 952 dev_t dev; 953 struct uio *uio; 954 { 955 956 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 957 } 958 959 int 960 xdwrite(dev, uio) 961 dev_t dev; 962 struct uio *uio; 963 { 964 965 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 966 } 967 968 969 /* 970 * xdsize: return size of a partition for a dump 971 */ 972 973 int 974 xdsize(dev) 975 dev_t dev; 976 977 { 978 struct xd_softc *xdsc; 979 int unit, part, size, omask; 980 981 /* valid unit? */ 982 unit = DISKUNIT(dev); 983 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 984 return (-1); 985 986 part = DISKPART(dev); 987 omask = xdsc->sc_dk.dk_openmask & (1 << part); 988 989 if (omask == 0 && xdopen(dev, 0, S_IFBLK) != 0) 990 return (-1); 991 992 /* do it */ 993 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 994 size = -1; /* only give valid size for swap partitions */ 995 else 996 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size; 997 if (omask == 0 && xdclose(dev, 0, S_IFBLK) != 0) 998 return (-1); 999 return (size); 1000 } 1001 /* 1002 * xdstrategy: buffering system interface to xd. 1003 */ 1004 1005 void 1006 xdstrategy(bp) 1007 struct buf *bp; 1008 1009 { 1010 struct xd_softc *xd; 1011 struct xdc_softc *parent; 1012 struct buf *wq; 1013 int s, unit; 1014 struct xdc_attach_args xa; 1015 1016 unit = DISKUNIT(bp->b_dev); 1017 1018 /* check for live device */ 1019 1020 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1021 bp->b_blkno < 0 || 1022 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1023 bp->b_error = EINVAL; 1024 goto bad; 1025 } 1026 /* do we need to attach the drive? */ 1027 1028 if (xd->state == XD_DRIVE_UNKNOWN) { 1029 xa.driveno = xd->xd_drive; 1030 xa.dvmabuf = (char *) dvma_malloc(XDFM_BPS); 1031 xa.fullmode = XD_SUB_WAIT; 1032 xa.booting = 0; 1033 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1034 dvma_free(xa.dvmabuf, XDFM_BPS); 1035 if (xd->state == XD_DRIVE_UNKNOWN) { 1036 bp->b_error = EIO; 1037 goto bad; 1038 } 1039 } 1040 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1041 /* no I/O to unlabeled disks, unless raw partition */ 1042 bp->b_error = EIO; 1043 goto bad; 1044 } 1045 /* short circuit zero length request */ 1046 1047 if (bp->b_bcount == 0) 1048 goto done; 1049 1050 /* check bounds with label (disksubr.c). Determine the size of the 1051 * transfer, and make sure it is within the boundaries of the 1052 * partition. Adjust transfer if needed, and signal errors or early 1053 * completion. */ 1054 1055 if (bounds_check_with_label(bp, xd->sc_dk.dk_label, 1056 (xd->flags & XD_WLABEL) != 0) <= 0) 1057 goto done; 1058 1059 /* 1060 * now we know we have a valid buf structure that we need to do I/O 1061 * on. 1062 * 1063 * note that we don't disksort because the controller has a sorting 1064 * algorithm built into the hardware. 1065 */ 1066 1067 s = splbio(); /* protect the queues */ 1068 1069 /* first, give jobs in front of us a chance */ 1070 1071 parent = xd->parent; 1072 while (parent->nfree > 0 && parent->sc_wq.b_actf) 1073 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1074 break; 1075 1076 /* if there are no free iorq's, then we just queue and return. the 1077 * buffs will get picked up later by xdcintr(). */ 1078 1079 if (parent->nfree == 0) { 1080 wq = &xd->parent->sc_wq; 1081 bp->b_actf = 0; 1082 bp->b_actb = wq->b_actb; 1083 *wq->b_actb = bp; 1084 wq->b_actb = &bp->b_actf; 1085 splx(s); 1086 return; 1087 } 1088 /* now we have free iopb's and we are at splbio... start 'em up */ 1089 1090 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1091 return; 1092 } 1093 1094 /* done! */ 1095 1096 splx(s); 1097 return; 1098 1099 bad: /* tells upper layers we have an error */ 1100 bp->b_flags |= B_ERROR; 1101 done: /* tells upper layers we are done with this 1102 * buf */ 1103 bp->b_resid = bp->b_bcount; 1104 biodone(bp); 1105 } 1106 /* 1107 * end of {b,c}devsw functions 1108 */ 1109 1110 /* 1111 * i n t e r r u p t f u n c t i o n 1112 * 1113 * xdcintr: hardware interrupt. 1114 */ 1115 int 1116 xdcintr(v) 1117 void *v; 1118 1119 { 1120 struct xdc_softc *xdcsc = v; 1121 struct xd_softc *xd; 1122 struct buf *bp; 1123 1124 /* kick the event counter */ 1125 1126 xdcsc->sc_intrcnt.ev_count++; 1127 1128 /* remove as many done IOPBs as possible */ 1129 1130 xdc_remove_iorq(xdcsc); 1131 1132 /* start any iorq's already waiting */ 1133 1134 xdc_start(xdcsc, XDC_MAXIOPB); 1135 1136 /* fill up any remaining iorq's with queue'd buffers */ 1137 1138 while (xdcsc->nfree > 0 && xdcsc->sc_wq.b_actf) 1139 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1140 break; 1141 1142 return (1); 1143 } 1144 /* 1145 * end of interrupt function 1146 */ 1147 1148 /* 1149 * i n t e r n a l f u n c t i o n s 1150 */ 1151 1152 /* 1153 * xdc_rqinit: fill out the fields of an I/O request 1154 */ 1155 1156 inline void 1157 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1158 struct xd_iorq *rq; 1159 struct xdc_softc *xdc; 1160 struct xd_softc *xd; 1161 int md; 1162 u_long blk; 1163 int cnt; 1164 caddr_t db; 1165 struct buf *bp; 1166 { 1167 rq->xdc = xdc; 1168 rq->xd = xd; 1169 rq->ttl = XDC_MAXTTL + 10; 1170 rq->mode = md; 1171 rq->tries = rq->errno = rq->lasterror = 0; 1172 rq->blockno = blk; 1173 rq->sectcnt = cnt; 1174 rq->dbuf = rq->dbufbase = db; 1175 rq->buf = bp; 1176 } 1177 /* 1178 * xdc_rqtopb: load up an IOPB based on an iorq 1179 */ 1180 1181 void 1182 xdc_rqtopb(iorq, iopb, cmd, subfun) 1183 struct xd_iorq *iorq; 1184 struct xd_iopb *iopb; 1185 int cmd, subfun; 1186 1187 { 1188 u_long block, dp; 1189 1190 /* standard stuff */ 1191 1192 iopb->errs = iopb->done = 0; 1193 iopb->comm = cmd; 1194 iopb->errno = iopb->status = 0; 1195 iopb->subfun = subfun; 1196 if (iorq->xd) 1197 iopb->unit = iorq->xd->xd_drive; 1198 else 1199 iopb->unit = 0; 1200 1201 /* check for alternate IOPB format */ 1202 1203 if (cmd == XDCMD_WRP) { 1204 switch (subfun) { 1205 case XDFUN_CTL:{ 1206 struct xd_iopb_ctrl *ctrl = 1207 (struct xd_iopb_ctrl *) iopb; 1208 iopb->lll = 0; 1209 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1210 ? 0 1211 : iorq->xdc->ipl; 1212 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1213 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1214 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1215 XDPC_RBC | XDPC_ECC2; 1216 ctrl->throttle = XDC_THROTTLE; 1217 #ifdef sparc 1218 if (cputyp == CPU_SUN4 && cpumod == SUN4_300) 1219 ctrl->delay = XDC_DELAY_4_300; 1220 else 1221 ctrl->delay = XDC_DELAY_SPARC; 1222 #endif 1223 #ifdef sun3 1224 ctrl->delay = XDC_DELAY_SUN3; 1225 #endif 1226 break; 1227 } 1228 case XDFUN_DRV:{ 1229 struct xd_iopb_drive *drv = 1230 (struct xd_iopb_drive *)iopb; 1231 /* we assume that the disk label has the right 1232 * info */ 1233 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1234 drv->dparam_ipl = (XDC_DPARAM << 3); 1235 else 1236 drv->dparam_ipl = (XDC_DPARAM << 3) | 1237 iorq->xdc->ipl; 1238 drv->maxsect = iorq->xd->nsect - 1; 1239 drv->maxsector = drv->maxsect; 1240 /* note: maxsector != maxsect only if you are 1241 * doing cyl sparing */ 1242 drv->headoff = 0; 1243 drv->maxcyl = iorq->xd->pcyl - 1; 1244 drv->maxhead = iorq->xd->nhead - 1; 1245 break; 1246 } 1247 case XDFUN_FMT:{ 1248 struct xd_iopb_format *form = 1249 (struct xd_iopb_format *) iopb; 1250 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1251 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1252 else 1253 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1254 iorq->xdc->ipl; 1255 form->field1 = XDFM_FIELD1; 1256 form->field2 = XDFM_FIELD2; 1257 form->field3 = XDFM_FIELD3; 1258 form->field4 = XDFM_FIELD4; 1259 form->bytespersec = XDFM_BPS; 1260 form->field6 = XDFM_FIELD6; 1261 form->field7 = XDFM_FIELD7; 1262 break; 1263 } 1264 } 1265 } else { 1266 1267 /* normal IOPB case (harmless to RDP command) */ 1268 1269 iopb->lll = 0; 1270 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1271 ? 0 1272 : iorq->xdc->ipl; 1273 iopb->sectcnt = iorq->sectcnt; 1274 block = iorq->blockno; 1275 if (iorq->xd == NULL || block == 0) { 1276 iopb->sectno = iopb->headno = iopb->cylno = 0; 1277 } else { 1278 iopb->sectno = block % iorq->xd->nsect; 1279 block = block / iorq->xd->nsect; 1280 iopb->headno = block % iorq->xd->nhead; 1281 block = block / iorq->xd->nhead; 1282 iopb->cylno = block; 1283 } 1284 iopb->daddr = dp = (iorq->dbuf == NULL) ? 0 : 1285 dvma_kvtopa((long)iorq->dbuf, BUS_VME32); 1286 iopb->addrmod = XDC_ADDRMOD; 1287 } 1288 } 1289 1290 /* 1291 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1292 * If you've already got an IORQ, you can call submit directly (currently 1293 * there is no need to do this). NORM requests are handled seperately. 1294 */ 1295 int 1296 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1297 struct xdc_softc *xdcsc; 1298 int cmd, subfn, unit, block, scnt; 1299 char *dptr; 1300 int fullmode; 1301 1302 { 1303 int rqno, submode = XD_STATE(fullmode), retry; 1304 u_long dp; 1305 struct xd_iorq *iorq; 1306 struct xd_iopb *iopb; 1307 1308 /* get iorq/iopb */ 1309 switch (submode) { 1310 case XD_SUB_POLL: 1311 while (xdcsc->nfree == 0) { 1312 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1313 return (XD_ERR_FAIL); 1314 } 1315 break; 1316 case XD_SUB_WAIT: 1317 retry = 1; 1318 while (retry) { 1319 while (xdcsc->nfree == 0) { 1320 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1321 return (XD_ERR_FAIL); 1322 } 1323 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1324 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1325 return (XD_ERR_FAIL); 1326 } 1327 if (xdcsc->nfree) 1328 retry = 0; /* got it */ 1329 } 1330 break; 1331 default: 1332 return (XD_ERR_FAIL); /* illegal */ 1333 } 1334 if (xdcsc->nfree == 0) 1335 panic("xdcmd nfree"); 1336 rqno = XDC_RQALLOC(xdcsc); 1337 iorq = &xdcsc->reqs[rqno]; 1338 iopb = iorq->iopb; 1339 1340 1341 /* init iorq/iopb */ 1342 1343 xdc_rqinit(iorq, xdcsc, 1344 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1345 fullmode, block, scnt, dptr, NULL); 1346 1347 /* load IOPB from iorq */ 1348 1349 xdc_rqtopb(iorq, iopb, cmd, subfn); 1350 1351 /* submit it for processing */ 1352 1353 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1354 1355 return (rqno); 1356 } 1357 /* 1358 * xdc_startbuf 1359 * start a buffer running, assumes nfree > 0 1360 */ 1361 1362 int 1363 xdc_startbuf(xdcsc, xdsc, bp) 1364 struct xdc_softc *xdcsc; 1365 struct xd_softc *xdsc; 1366 struct buf *bp; 1367 1368 { 1369 int rqno, partno; 1370 struct xd_iorq *iorq; 1371 struct xd_iopb *iopb; 1372 struct buf *wq; 1373 u_long block, dp; 1374 caddr_t dbuf; 1375 1376 if (!xdcsc->nfree) 1377 panic("xdc_startbuf free"); 1378 rqno = XDC_RQALLOC(xdcsc); 1379 iorq = &xdcsc->reqs[rqno]; 1380 iopb = iorq->iopb; 1381 1382 /* get buf */ 1383 1384 if (bp == NULL) { 1385 bp = xdcsc->sc_wq.b_actf; 1386 if (!bp) 1387 panic("xdc_startbuf bp"); 1388 wq = bp->b_actf; 1389 if (wq) 1390 wq->b_actb = bp->b_actb; 1391 else 1392 xdcsc->sc_wq.b_actb = bp->b_actb; 1393 *bp->b_actb = wq; 1394 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1395 } 1396 partno = DISKPART(bp->b_dev); 1397 #ifdef XDC_DEBUG 1398 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1399 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1400 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1401 bp->b_bcount, bp->b_data); 1402 #endif 1403 1404 /* 1405 * load request. we have to calculate the correct block number based 1406 * on partition info. 1407 * 1408 * also, note that there are two kinds of buf structures, those with 1409 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1410 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1411 * buffer which has already been mapped into DVMA space. (Not on sun3) 1412 * However, if B_PHYS is not set, then the buffer is a normal system 1413 * buffer which does *not* live in DVMA space. In that case we call 1414 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1415 * 1416 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1417 * as mapped into DVMA space, where as the bp->b_data points to its 1418 * non-DVMA mapping. 1419 * 1420 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1421 * into dvma space, only that it was remapped into the kernel. 1422 * We ALWAYS have to remap the kernel buf into DVMA space. 1423 * (It is done inexpensively, using whole segments!) 1424 */ 1425 1426 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1427 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1428 1429 dbuf = dvma_mapin(bp->b_data, bp->b_bcount); 1430 if (dbuf == NULL) { /* out of DVMA space */ 1431 printf("%s: warning: out of DVMA space\n", xdcsc->sc_dev.dv_xname); 1432 XDC_FREE(xdcsc, rqno); 1433 wq = &xdcsc->sc_wq; /* put at end of queue */ 1434 bp->b_actf = 0; 1435 bp->b_actb = wq->b_actb; 1436 *wq->b_actb = bp; 1437 wq->b_actb = &bp->b_actf; 1438 return (XD_ERR_FAIL); /* XXX: need some sort of 1439 * call-back scheme here? */ 1440 } 1441 1442 /* init iorq and load iopb from it */ 1443 1444 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1445 bp->b_bcount / XDFM_BPS, dbuf, bp); 1446 1447 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1448 1449 /* Instrumentation. */ 1450 disk_busy(&xdsc->sc_dk); 1451 1452 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1453 1454 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1455 return (XD_ERR_AOK); 1456 } 1457 1458 1459 /* 1460 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1461 * if ok. if it fail returns an error code. type is XD_SUB_*. 1462 * 1463 * note: caller frees iorq in all cases except NORM 1464 * 1465 * return value: 1466 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1467 * WAIT: XD_AOK (success), <error-code> (failed) 1468 * POLL: <same as WAIT> 1469 * NOQ : <same as NORM> 1470 * 1471 * there are three sources for i/o requests: 1472 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1473 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1474 * [3] open/ioctl: these are I/O requests done in the context of a process, 1475 * and the process should block until they are done. 1476 * 1477 * software state is stored in the iorq structure. each iorq has an 1478 * iopb structure. the hardware understands the iopb structure. 1479 * every command must go through an iopb. a 7053 can only handle 1480 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1481 * DVMA space at boot up time. what happens if we run out of iopb's? 1482 * for i/o type [1], the buffers are queued at the "buff" layer and 1483 * picked up later by the interrupt routine. for case [2] the 1484 * programmed i/o driver is called with a special flag that says 1485 * return when one iopb is free. for case [3] the process can sleep 1486 * on the iorq free list until some iopbs are avaliable. 1487 */ 1488 1489 1490 int 1491 xdc_submit_iorq(xdcsc, iorqno, type) 1492 struct xdc_softc *xdcsc; 1493 int iorqno; 1494 int type; 1495 1496 { 1497 u_long iopbaddr; 1498 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1499 1500 #ifdef XDC_DEBUG 1501 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1502 iorqno, type); 1503 #endif 1504 1505 /* first check and see if controller is busy */ 1506 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1507 #ifdef XDC_DEBUG 1508 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1509 #endif 1510 if (type == XD_SUB_NOQ) 1511 return (XD_ERR_FAIL); /* failed */ 1512 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1513 switch (type) { 1514 case XD_SUB_NORM: 1515 return XD_ERR_AOK; /* success */ 1516 case XD_SUB_WAIT: 1517 while (iorq->iopb->done == 0) { 1518 sleep(iorq, PRIBIO); 1519 } 1520 return (iorq->errno); 1521 case XD_SUB_POLL: 1522 return (xdc_piodriver(xdcsc, iorqno, 0)); 1523 default: 1524 panic("xdc_submit_iorq adding"); 1525 } 1526 } 1527 #ifdef XDC_DEBUG 1528 { 1529 u_char *rio = (u_char *) iorq->iopb; 1530 int sz = sizeof(struct xd_iopb), lcv; 1531 printf("%s: aio #%d [", 1532 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1533 for (lcv = 0; lcv < sz; lcv++) 1534 printf(" %02x", rio[lcv]); 1535 printf("]\n"); 1536 } 1537 #endif /* XDC_DEBUG */ 1538 1539 /* controller not busy, start command */ 1540 iopbaddr = dvma_kvtopa((long) iorq->iopb, BUS_VME32); 1541 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1542 xdcsc->nrun++; 1543 /* command now running, wrap it up */ 1544 switch (type) { 1545 case XD_SUB_NORM: 1546 case XD_SUB_NOQ: 1547 return (XD_ERR_AOK); /* success */ 1548 case XD_SUB_WAIT: 1549 while (iorq->iopb->done == 0) { 1550 sleep(iorq, PRIBIO); 1551 } 1552 return (iorq->errno); 1553 case XD_SUB_POLL: 1554 return (xdc_piodriver(xdcsc, iorqno, 0)); 1555 default: 1556 panic("xdc_submit_iorq wrap up"); 1557 } 1558 panic("xdc_submit_iorq"); 1559 return 0; /* not reached */ 1560 } 1561 1562 1563 /* 1564 * xdc_piodriver 1565 * 1566 * programmed i/o driver. this function takes over the computer 1567 * and drains off all i/o requests. it returns the status of the iorq 1568 * the caller is interesting in. if freeone is true, then it returns 1569 * when there is a free iorq. 1570 */ 1571 int 1572 xdc_piodriver(xdcsc, iorqno, freeone) 1573 struct xdc_softc *xdcsc; 1574 char iorqno; 1575 int freeone; 1576 1577 { 1578 int nreset = 0; 1579 int retval = 0; 1580 u_long count; 1581 struct xdc *xdc = xdcsc->xdc; 1582 #ifdef XDC_DEBUG 1583 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1584 iorqno, freeone); 1585 #endif 1586 1587 while (xdcsc->nwait || xdcsc->nrun) { 1588 #ifdef XDC_DEBUG 1589 printf("xdc_piodriver: wait=%d, run=%d\n", 1590 xdcsc->nwait, xdcsc->nrun); 1591 #endif 1592 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1593 #ifdef XDC_DEBUG 1594 printf("xdc_piodriver: done wait with count = %d\n", count); 1595 #endif 1596 /* we expect some progress soon */ 1597 if (count == 0 && nreset >= 2) { 1598 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1599 #ifdef XDC_DEBUG 1600 printf("xdc_piodriver: timeout\n"); 1601 #endif 1602 return (XD_ERR_FAIL); 1603 } 1604 if (count == 0) { 1605 if (xdc_reset(xdcsc, 0, 1606 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1607 XD_ERR_FAIL, 1608 0) == XD_ERR_FAIL) 1609 return (XD_ERR_FAIL); /* flushes all but POLL 1610 * requests, resets */ 1611 continue; 1612 } 1613 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1614 if (freeone) { 1615 if (xdcsc->nrun < XDC_MAXIOPB) { 1616 #ifdef XDC_DEBUG 1617 printf("xdc_piodriver: done: one free\n"); 1618 #endif 1619 return (XD_ERR_AOK); 1620 } 1621 continue; /* don't xdc_start */ 1622 } 1623 xdc_start(xdcsc, XDC_MAXIOPB); 1624 } 1625 1626 /* get return value */ 1627 1628 retval = xdcsc->reqs[iorqno].errno; 1629 1630 #ifdef XDC_DEBUG 1631 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1632 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1633 #endif 1634 1635 /* now that we've drained everything, start up any bufs that have 1636 * queued */ 1637 1638 while (xdcsc->nfree > 0 && xdcsc->sc_wq.b_actf) 1639 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1640 break; 1641 1642 return (retval); 1643 } 1644 1645 /* 1646 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1647 * we steal iopb[0] for this, but we put it back when we are done. 1648 */ 1649 int 1650 xdc_xdreset(xdcsc, xdsc) 1651 struct xdc_softc *xdcsc; 1652 struct xd_softc *xdsc; 1653 1654 { 1655 struct xd_iopb tmpiopb; 1656 u_long addr; 1657 int del; 1658 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1659 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1660 xdcsc->iopbase->comm = XDCMD_RST; 1661 xdcsc->iopbase->unit = xdsc->xd_drive; 1662 addr = (u_long) xdcsc->dvmaiopb; 1663 XDC_GO(xdcsc->xdc, addr); /* go! */ 1664 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1665 if (del <= 0 || xdcsc->iopbase->errs) { 1666 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1667 xdc_e2str(xdcsc->iopbase->errno)); 1668 xdcsc->xdc->xdc_csr = XDC_RESET; 1669 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1670 if (del <= 0) 1671 panic("xdc_reset"); 1672 } else { 1673 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1674 } 1675 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1676 } 1677 1678 1679 /* 1680 * xdc_reset: reset everything: requests are marked as errors except 1681 * a polled request (which is resubmitted) 1682 */ 1683 int 1684 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1685 struct xdc_softc *xdcsc; 1686 int quiet, blastmode, error; 1687 struct xd_softc *xdsc; 1688 1689 { 1690 int del = 0, lcv, poll = -1, retval = XD_ERR_AOK; 1691 int oldfree = xdcsc->nfree; 1692 struct xd_iorq *iorq; 1693 1694 /* soft reset hardware */ 1695 1696 if (!quiet) 1697 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1698 xdcsc->xdc->xdc_csr = XDC_RESET; 1699 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1700 if (del <= 0) { 1701 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1702 retval = XD_ERR_FAIL; 1703 } 1704 if (xdsc) 1705 xdc_xdreset(xdcsc, xdsc); 1706 1707 /* fix queues based on "blast-mode" */ 1708 1709 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1710 iorq = &xdcsc->reqs[lcv]; 1711 1712 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1713 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1714 XD_STATE(iorq->mode) != XD_SUB_NORM) 1715 /* is it active? */ 1716 continue; 1717 1718 xdcsc->nrun--; /* it isn't running any more */ 1719 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1720 /* failed */ 1721 iorq->errno = error; 1722 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1723 switch (XD_STATE(iorq->mode)) { 1724 case XD_SUB_NORM: 1725 iorq->buf->b_error = EIO; 1726 iorq->buf->b_flags |= B_ERROR; 1727 iorq->buf->b_resid = 1728 iorq->sectcnt * XDFM_BPS; 1729 /* Sun3: map/unmap regardless of B_PHYS */ 1730 dvma_mapout(iorq->dbufbase, 1731 iorq->buf->b_bcount); 1732 disk_unbusy(&iorq->xd->sc_dk, 1733 (iorq->buf->b_bcount - iorq->buf->b_resid)); 1734 biodone(iorq->buf); 1735 XDC_FREE(xdcsc, lcv); /* add to free list */ 1736 break; 1737 case XD_SUB_WAIT: 1738 wakeup(iorq); 1739 case XD_SUB_POLL: 1740 xdcsc->ndone++; 1741 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1742 break; 1743 } 1744 1745 } else { 1746 1747 /* resubmit, put at front of wait queue */ 1748 XDC_HWAIT(xdcsc, lcv); 1749 } 1750 } 1751 1752 /* 1753 * now, if stuff is waiting, start it. 1754 * since we just reset it should go 1755 */ 1756 xdc_start(xdcsc, XDC_MAXIOPB); 1757 1758 /* ok, we did it */ 1759 if (oldfree == 0 && xdcsc->nfree) 1760 wakeup(&xdcsc->nfree); 1761 1762 #ifdef XDC_DIAG 1763 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1764 if (del != XDC_MAXIOPB) 1765 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1766 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1767 else 1768 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1769 printf("%s: diag: lots of done jobs (%d)\n", 1770 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1771 #endif 1772 printf("RESET DONE\n"); 1773 return (retval); 1774 } 1775 /* 1776 * xdc_start: start all waiting buffers 1777 */ 1778 1779 int 1780 xdc_start(xdcsc, maxio) 1781 struct xdc_softc *xdcsc; 1782 int maxio; 1783 1784 { 1785 int rqno; 1786 while (maxio && xdcsc->nwait && 1787 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1788 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1789 * param */ 1790 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1791 panic("xdc_start"); /* should never happen */ 1792 maxio--; 1793 } 1794 } 1795 /* 1796 * xdc_remove_iorq: remove "done" IOPB's. 1797 */ 1798 1799 int 1800 xdc_remove_iorq(xdcsc) 1801 struct xdc_softc *xdcsc; 1802 1803 { 1804 int errno, rqno, comm, errs; 1805 struct xdc *xdc = xdcsc->xdc; 1806 u_long addr; 1807 struct xd_iopb *iopb; 1808 struct xd_iorq *iorq; 1809 struct buf *bp; 1810 1811 if (xdc->xdc_csr & XDC_F_ERROR) { 1812 /* 1813 * FATAL ERROR: should never happen under normal use. This 1814 * error is so bad, you can't even tell which IOPB is bad, so 1815 * we dump them all. 1816 */ 1817 errno = xdc->xdc_f_err; 1818 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 1819 errno, xdc_e2str(errno)); 1820 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 1821 printf("%s: soft reset failed!\n", 1822 xdcsc->sc_dev.dv_xname); 1823 panic("xdc_remove_iorq: controller DEAD"); 1824 } 1825 return (XD_ERR_AOK); 1826 } 1827 1828 /* 1829 * get iopb that is done 1830 * 1831 * hmm... I used to read the address of the done IOPB off the VME 1832 * registers and calculate the rqno directly from that. that worked 1833 * until I started putting a load on the controller. when loaded, i 1834 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1835 * be set, even after DELAY'ing a while! later on the timeout 1836 * routine would detect IOPBs that were marked "running" but their 1837 * "done" bit was set. rather than dealing directly with this 1838 * problem, it is just easier to look at all running IOPB's for the 1839 * done bit. 1840 */ 1841 if (xdc->xdc_csr & XDC_REMIOPB) { 1842 xdc->xdc_csr = XDC_CLRRIO; 1843 } 1844 1845 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1846 iorq = &xdcsc->reqs[rqno]; 1847 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1848 continue; /* free, or done */ 1849 iopb = &xdcsc->iopbase[rqno]; 1850 if (iopb->done == 0) 1851 continue; /* not done yet */ 1852 1853 #ifdef XDC_DEBUG 1854 { 1855 u_char *rio = (u_char *) iopb; 1856 int sz = sizeof(struct xd_iopb), lcv; 1857 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 1858 for (lcv = 0; lcv < sz; lcv++) 1859 printf(" %02x", rio[lcv]); 1860 printf("]\n"); 1861 } 1862 #endif /* XDC_DEBUG */ 1863 1864 xdcsc->nrun--; 1865 1866 comm = iopb->comm; 1867 errs = iopb->errs; 1868 1869 if (errs) 1870 iorq->errno = iopb->errno; 1871 else 1872 iorq->errno = 0; 1873 1874 /* handle non-fatal errors */ 1875 1876 if (errs && 1877 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 1878 continue; /* AOK: we resubmitted it */ 1879 1880 1881 /* this iorq is now done (hasn't been restarted or anything) */ 1882 1883 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 1884 xdc_perror(iorq, iopb, 0); 1885 1886 /* now, if read/write check to make sure we got all the data 1887 * we needed. (this may not be the case if we got an error in 1888 * the middle of a multisector request). */ 1889 1890 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 1891 (comm == XDCMD_RD || comm == XDCMD_WR)) { 1892 /* we just successfully processed a bad144 sector 1893 * note: if we are in bad 144 mode, the pointers have 1894 * been advanced already (see above) and are pointing 1895 * at the bad144 sector. to exit bad144 mode, we 1896 * must advance the pointers 1 sector and issue a new 1897 * request if there are still sectors left to process 1898 * 1899 */ 1900 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 1901 1902 /* exit b144 mode */ 1903 iorq->mode = iorq->mode & (~XD_MODE_B144); 1904 1905 if (iorq->sectcnt) { /* more to go! */ 1906 iorq->lasterror = iorq->errno = iopb->errno = 0; 1907 iopb->errs = iopb->done = 0; 1908 iorq->tries = 0; 1909 iopb->sectcnt = iorq->sectcnt; 1910 iopb->cylno = iorq->blockno / 1911 iorq->xd->sectpercyl; 1912 iopb->headno = 1913 (iorq->blockno / iorq->xd->nhead) % 1914 iorq->xd->nhead; 1915 iopb->sectno = iorq->blockno % XDFM_BPS; 1916 iopb->daddr = 1917 dvma_kvtopa((long)iorq->dbuf, BUS_VME32); 1918 XDC_HWAIT(xdcsc, rqno); 1919 xdc_start(xdcsc, 1); /* resubmit */ 1920 continue; 1921 } 1922 } 1923 /* final cleanup, totally done with this request */ 1924 1925 switch (XD_STATE(iorq->mode)) { 1926 case XD_SUB_NORM: 1927 bp = iorq->buf; 1928 if (errs) { 1929 bp->b_error = EIO; 1930 bp->b_flags |= B_ERROR; 1931 bp->b_resid = iorq->sectcnt * XDFM_BPS; 1932 } else { 1933 bp->b_resid = 0; /* done */ 1934 } 1935 /* Sun3: map/unmap regardless of B_PHYS */ 1936 dvma_mapout(iorq->dbufbase, 1937 iorq->buf->b_bcount); 1938 disk_unbusy(&iorq->xd->sc_dk, 1939 (bp->b_bcount - bp->b_resid)); 1940 XDC_FREE(xdcsc, rqno); 1941 biodone(bp); 1942 break; 1943 case XD_SUB_WAIT: 1944 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1945 xdcsc->ndone++; 1946 wakeup(iorq); 1947 break; 1948 case XD_SUB_POLL: 1949 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1950 xdcsc->ndone++; 1951 break; 1952 } 1953 } 1954 1955 return (XD_ERR_AOK); 1956 } 1957 1958 /* 1959 * xdc_perror: print error. 1960 * - if still_trying is true: we got an error, retried and got a 1961 * different error. in that case lasterror is the old error, 1962 * and errno is the new one. 1963 * - if still_trying is not true, then if we ever had an error it 1964 * is in lasterror. also, if iorq->errno == 0, then we recovered 1965 * from that error (otherwise iorq->errno == iorq->lasterror). 1966 */ 1967 void 1968 xdc_perror(iorq, iopb, still_trying) 1969 struct xd_iorq *iorq; 1970 struct xd_iopb *iopb; 1971 int still_trying; 1972 1973 { 1974 1975 int error = iorq->lasterror; 1976 1977 printf("%s", (iorq->xd) ? 1978 iorq->xd->sc_dev.dv_xname : 1979 iorq->xdc->sc_dev.dv_xname); 1980 if (iorq->buf) 1981 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1982 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 1983 printf("%s %d/%d/%d: ", 1984 (iopb->comm == XDCMD_RD) ? "read" : "write", 1985 iopb->cylno, iopb->headno, iopb->sectno); 1986 printf("%s", xdc_e2str(error)); 1987 1988 if (still_trying) 1989 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 1990 else 1991 if (iorq->errno == 0) 1992 printf(" [recovered in %d tries]", iorq->tries); 1993 1994 printf("\n"); 1995 } 1996 1997 /* 1998 * xdc_error: non-fatal error encountered... recover. 1999 * return AOK if resubmitted, return FAIL if this iopb is done 2000 */ 2001 int 2002 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2003 struct xdc_softc *xdcsc; 2004 struct xd_iorq *iorq; 2005 struct xd_iopb *iopb; 2006 int rqno, comm; 2007 2008 { 2009 int errno = iorq->errno; 2010 int erract = errno & XD_ERA_MASK; 2011 int oldmode, advance, i; 2012 2013 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2014 oldmode = iorq->mode; 2015 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2016 xdcsc->ndone++; 2017 /* make xdc_start ignore us */ 2018 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2019 iorq->mode = oldmode; 2020 xdcsc->ndone--; 2021 } 2022 /* check for read/write to a sector in bad144 table if bad: redirect 2023 * request to bad144 area */ 2024 2025 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2026 (iorq->mode & XD_MODE_B144) == 0) { 2027 advance = iorq->sectcnt - iopb->sectcnt; 2028 XDC_ADVANCE(iorq, advance); 2029 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2030 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2031 iorq->blockno % iorq->xd->nsect)) != -1) { 2032 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2033 * redirect */ 2034 iopb->errno = iopb->done = iopb->errs = 0; 2035 iopb->sectcnt = 1; 2036 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2037 /* second to last acyl */ 2038 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2039 * standard */ 2040 iopb->headno = i / iorq->xd->nhead; 2041 iopb->sectno = i % iorq->xd->nhead; 2042 XDC_HWAIT(xdcsc, rqno); 2043 xdc_start(xdcsc, 1); /* resubmit */ 2044 return (XD_ERR_AOK); /* recovered! */ 2045 } 2046 } 2047 2048 /* 2049 * it isn't a bad144 sector, must be real error! see if we can retry 2050 * it? 2051 */ 2052 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2053 xdc_perror(iorq, iopb, 1); /* inform of error state 2054 * change */ 2055 iorq->lasterror = errno; 2056 2057 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2058 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2059 iorq->tries++; 2060 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2061 XDC_HWAIT(xdcsc, rqno); 2062 xdc_start(xdcsc, 1); /* restart */ 2063 return (XD_ERR_AOK); /* recovered! */ 2064 } 2065 2066 /* failed to recover from this error */ 2067 return (XD_ERR_FAIL); 2068 } 2069 2070 /* 2071 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2072 */ 2073 void 2074 xdc_tick(arg) 2075 void *arg; 2076 2077 { 2078 struct xdc_softc *xdcsc = arg; 2079 int lcv, s, reset = 0; 2080 #ifdef XDC_DIAG 2081 int wait, run, free, done, whd; 2082 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2083 s = splbio(); 2084 wait = xdcsc->nwait; 2085 run = xdcsc->nrun; 2086 free = xdcsc->nfree; 2087 done = xdcsc->ndone; 2088 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2089 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2090 splx(s); 2091 if (wait + run + free + done != XDC_MAXIOPB) { 2092 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2093 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2094 bzero(mark, sizeof(mark)); 2095 printf("FREE: "); 2096 for (lcv = free; lcv > 0; lcv--) { 2097 printf("%d ", fqc[lcv - 1]); 2098 mark[fqc[lcv - 1]] = 1; 2099 } 2100 printf("\nWAIT: "); 2101 lcv = wait; 2102 while (lcv > 0) { 2103 printf("%d ", wqc[whd]); 2104 mark[wqc[whd]] = 1; 2105 whd = (whd + 1) % XDC_MAXIOPB; 2106 lcv--; 2107 } 2108 printf("\n"); 2109 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2110 if (mark[lcv] == 0) 2111 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %x\n", 2112 lcv, xdcsc->reqs[lcv].mode, 2113 xdcsc->iopbase[lcv].done, 2114 xdcsc->iopbase[lcv].errs, 2115 xdcsc->iopbase[lcv].errno, 2116 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2117 } 2118 } else 2119 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2120 printf("%s: diag: lots of done jobs (%d)\n", 2121 xdcsc->sc_dev.dv_xname, done); 2122 2123 #endif 2124 #ifdef XDC_DEBUG 2125 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2126 xdcsc->sc_dev.dv_xname, 2127 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2128 xdcsc->ndone); 2129 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2130 if (xdcsc->reqs[lcv].mode) 2131 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2132 lcv, 2133 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2134 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2135 } 2136 #endif 2137 2138 /* reduce ttl for each request if one goes to zero, reset xdc */ 2139 s = splbio(); 2140 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2141 if (xdcsc->reqs[lcv].mode == 0 || 2142 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2143 continue; 2144 xdcsc->reqs[lcv].ttl--; 2145 if (xdcsc->reqs[lcv].ttl == 0) 2146 reset = 1; 2147 } 2148 if (reset) { 2149 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2150 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2151 } 2152 splx(s); 2153 2154 /* until next time */ 2155 2156 timeout(xdc_tick, xdcsc, XDC_TICKCNT); 2157 } 2158 2159 /* 2160 * xdc_ioctlcmd: this function provides a user level interface to the 2161 * controller via ioctl. this allows "format" programs to be written 2162 * in user code, and is also useful for some debugging. we return 2163 * an error code. called at user priority. 2164 */ 2165 int 2166 xdc_ioctlcmd(xd, dev, xio) 2167 struct xd_softc *xd; 2168 dev_t dev; 2169 struct xd_iocmd *xio; 2170 2171 { 2172 int s, err, rqno, dummy; 2173 caddr_t dvmabuf = NULL; 2174 struct xdc_softc *xdcsc; 2175 2176 /* check sanity of requested command */ 2177 2178 switch (xio->cmd) { 2179 2180 case XDCMD_NOP: /* no op: everything should be zero */ 2181 if (xio->subfn || xio->dptr || xio->dlen || 2182 xio->block || xio->sectcnt) 2183 return (EINVAL); 2184 break; 2185 2186 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2187 case XDCMD_WR: 2188 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2189 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2190 return (EINVAL); 2191 break; 2192 2193 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2194 return (EINVAL); 2195 2196 case XDCMD_WRP: /* write parameters */ 2197 return (EINVAL);/* not useful, except maybe drive 2198 * parameters... but drive parameters should 2199 * go via disklabel changes */ 2200 2201 case XDCMD_RDP: /* read parameters */ 2202 if (xio->subfn != XDFUN_DRV || 2203 xio->dlen || xio->block || xio->dptr) 2204 return (EINVAL); /* allow read drive params to 2205 * get hw_spt */ 2206 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2207 return (0); 2208 break; 2209 2210 case XDCMD_XRD: /* extended read/write */ 2211 case XDCMD_XWR: 2212 2213 switch (xio->subfn) { 2214 2215 case XDFUN_THD:/* track headers */ 2216 if (xio->sectcnt != xd->hw_spt || 2217 (xio->block % xd->nsect) != 0 || 2218 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2219 xio->dptr == NULL) 2220 return (EINVAL); 2221 xio->sectcnt = 0; 2222 break; 2223 2224 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2225 if (xio->cmd == XDCMD_XRD) 2226 return (EINVAL); /* no XDFUN_VFY */ 2227 if (xio->sectcnt || xio->dlen || 2228 (xio->block % xd->nsect) != 0 || xio->dptr) 2229 return (EINVAL); 2230 break; 2231 2232 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2233 return (EINVAL); /* not yet */ 2234 2235 case XDFUN_DM: /* defect map */ 2236 case XDFUN_DMX:/* defect map (alternate location) */ 2237 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2238 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2239 return (EINVAL); 2240 break; 2241 2242 default: 2243 return (EINVAL); 2244 } 2245 break; 2246 2247 case XDCMD_TST: /* diagnostics */ 2248 return (EINVAL); 2249 2250 default: 2251 return (EINVAL);/* ??? */ 2252 } 2253 2254 /* create DVMA buffer for request if needed */ 2255 2256 if (xio->dlen) { 2257 dvmabuf = dvma_malloc(xio->dlen); 2258 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2259 if (err = copyin(xio->dptr, dvmabuf, xio->dlen)) { 2260 dvma_free(dvmabuf, xio->dlen); 2261 return (err); 2262 } 2263 } 2264 } 2265 /* do it! */ 2266 2267 err = 0; 2268 xdcsc = xd->parent; 2269 s = splbio(); 2270 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2271 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2272 if (rqno == XD_ERR_FAIL) { 2273 err = EIO; 2274 goto done; 2275 } 2276 xio->errno = xdcsc->reqs[rqno].errno; 2277 xio->tries = xdcsc->reqs[rqno].tries; 2278 XDC_DONE(xdcsc, rqno, dummy); 2279 2280 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2281 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2282 2283 done: 2284 splx(s); 2285 if (dvmabuf) 2286 dvma_free(dvmabuf, xio->dlen); 2287 return (err); 2288 } 2289 2290 /* 2291 * xdc_e2str: convert error code number into an error string 2292 */ 2293 char * 2294 xdc_e2str(no) 2295 int no; 2296 { 2297 switch (no) { 2298 case XD_ERR_FAIL: 2299 return ("Software fatal error"); 2300 case XD_ERR_AOK: 2301 return ("Successful completion"); 2302 case XD_ERR_ICYL: 2303 return ("Illegal cylinder address"); 2304 case XD_ERR_IHD: 2305 return ("Illegal head address"); 2306 case XD_ERR_ISEC: 2307 return ("Illgal sector address"); 2308 case XD_ERR_CZER: 2309 return ("Count zero"); 2310 case XD_ERR_UIMP: 2311 return ("Unimplemented command"); 2312 case XD_ERR_IF1: 2313 return ("Illegal field length 1"); 2314 case XD_ERR_IF2: 2315 return ("Illegal field length 2"); 2316 case XD_ERR_IF3: 2317 return ("Illegal field length 3"); 2318 case XD_ERR_IF4: 2319 return ("Illegal field length 4"); 2320 case XD_ERR_IF5: 2321 return ("Illegal field length 5"); 2322 case XD_ERR_IF6: 2323 return ("Illegal field length 6"); 2324 case XD_ERR_IF7: 2325 return ("Illegal field length 7"); 2326 case XD_ERR_ISG: 2327 return ("Illegal scatter/gather length"); 2328 case XD_ERR_ISPT: 2329 return ("Not enough sectors per track"); 2330 case XD_ERR_ALGN: 2331 return ("Next IOPB address alignment error"); 2332 case XD_ERR_SGAL: 2333 return ("Scatter/gather address alignment error"); 2334 case XD_ERR_SGEC: 2335 return ("Scatter/gather with auto-ECC"); 2336 case XD_ERR_SECC: 2337 return ("Soft ECC corrected"); 2338 case XD_ERR_SIGN: 2339 return ("ECC ignored"); 2340 case XD_ERR_ASEK: 2341 return ("Auto-seek retry recovered"); 2342 case XD_ERR_RTRY: 2343 return ("Soft retry recovered"); 2344 case XD_ERR_HECC: 2345 return ("Hard data ECC"); 2346 case XD_ERR_NHDR: 2347 return ("Header not found"); 2348 case XD_ERR_NRDY: 2349 return ("Drive not ready"); 2350 case XD_ERR_TOUT: 2351 return ("Operation timeout"); 2352 case XD_ERR_VTIM: 2353 return ("VMEDMA timeout"); 2354 case XD_ERR_DSEQ: 2355 return ("Disk sequencer error"); 2356 case XD_ERR_HDEC: 2357 return ("Header ECC error"); 2358 case XD_ERR_RVFY: 2359 return ("Read verify"); 2360 case XD_ERR_VFER: 2361 return ("Fatail VMEDMA error"); 2362 case XD_ERR_VBUS: 2363 return ("VMEbus error"); 2364 case XD_ERR_DFLT: 2365 return ("Drive faulted"); 2366 case XD_ERR_HECY: 2367 return ("Header error/cyliner"); 2368 case XD_ERR_HEHD: 2369 return ("Header error/head"); 2370 case XD_ERR_NOCY: 2371 return ("Drive not on-cylinder"); 2372 case XD_ERR_SEEK: 2373 return ("Seek error"); 2374 case XD_ERR_ILSS: 2375 return ("Illegal sector size"); 2376 case XD_ERR_SEC: 2377 return ("Soft ECC"); 2378 case XD_ERR_WPER: 2379 return ("Write-protect error"); 2380 case XD_ERR_IRAM: 2381 return ("IRAM self test failure"); 2382 case XD_ERR_MT3: 2383 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2384 case XD_ERR_MT4: 2385 return ("Maintenance test 4 failure (header shift reg)"); 2386 case XD_ERR_MT5: 2387 return ("Maintenance test 5 failure (VMEDMA regs)"); 2388 case XD_ERR_MT6: 2389 return ("Maintenance test 6 failure (REGCEL chip)"); 2390 case XD_ERR_MT7: 2391 return ("Maintenance test 7 failure (buffer parity)"); 2392 case XD_ERR_MT8: 2393 return ("Maintenance test 8 failure (disk FIFO)"); 2394 case XD_ERR_IOCK: 2395 return ("IOPB checksum miscompare"); 2396 case XD_ERR_IODM: 2397 return ("IOPB DMA fatal"); 2398 case XD_ERR_IOAL: 2399 return ("IOPB address alignment error"); 2400 case XD_ERR_FIRM: 2401 return ("Firmware error"); 2402 case XD_ERR_MMOD: 2403 return ("Illegal maintenance mode test number"); 2404 case XD_ERR_ACFL: 2405 return ("ACFAIL asserted"); 2406 default: 2407 return ("Unknown error"); 2408 } 2409 } 2410
Indexes created Tue Sep 23 14:10:03 GMT 2025