xd.c revision 1.36
1 /* $NetBSD: xd.c,v 1.36 2002/09/06 13:18:43 gehenna 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: &Id: xd.c,v 1.9 1995/09/25 20:12:44 chuck 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 <uvm/uvm_extern.h> 78 79 #include <machine/autoconf.h> 80 #include <machine/dvma.h> 81 82 #include <dev/sun/disklabel.h> 83 84 #include <sun3/dev/xdreg.h> 85 #include <sun3/dev/xdvar.h> 86 #include <sun3/dev/xio.h> 87 88 #include "locators.h" 89 90 /* 91 * Print a complaint when no xd children were specified 92 * in the config file. Better than a link error... 93 * 94 * XXX: Some folks say this driver should be split in two, 95 * but that seems pointless with ONLY one type of child. 96 */ 97 #include "xd.h" 98 #if NXD == 0 99 #error "xdc but no xd?" 100 #endif 101 102 /* 103 * macros 104 */ 105 106 /* 107 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 108 */ 109 #define XDC_TWAIT(SC, N) { \ 110 (SC)->waitq[(SC)->waitend] = (N); \ 111 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 112 (SC)->nwait++; \ 113 } 114 115 /* 116 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 117 */ 118 #define XDC_HWAIT(SC, N) { \ 119 (SC)->waithead = ((SC)->waithead == 0) ? \ 120 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 121 (SC)->waitq[(SC)->waithead] = (N); \ 122 (SC)->nwait++; \ 123 } 124 125 /* 126 * XDC_GET_WAITER: gets the first request waiting on the waitq 127 * and removes it (so it can be submitted) 128 */ 129 #define XDC_GET_WAITER(XDCSC, RQ) { \ 130 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 131 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 132 xdcsc->nwait--; \ 133 } 134 135 /* 136 * XDC_FREE: add iorq "N" to SC's free list 137 */ 138 #define XDC_FREE(SC, N) { \ 139 (SC)->freereq[(SC)->nfree++] = (N); \ 140 (SC)->reqs[N].mode = 0; \ 141 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 142 } 143 144 145 /* 146 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 147 */ 148 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 149 150 /* 151 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 152 */ 153 #define XDC_GO(XDC, ADDR) { \ 154 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 155 (ADDR) = ((ADDR) >> 8); \ 156 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 157 (ADDR) = ((ADDR) >> 8); \ 158 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 159 (ADDR) = ((ADDR) >> 8); \ 160 (XDC)->xdc_iopbaddr3 = (ADDR); \ 161 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 162 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 163 } 164 165 /* 166 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 167 * LCV is a counter. If it goes to zero then we timed out. 168 */ 169 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 170 (LCV) = (TIME); \ 171 while ((LCV) > 0) { \ 172 if ((XDC)->xdc_csr & (BITS)) break; \ 173 (LCV) = (LCV) - 1; \ 174 DELAY(1); \ 175 } \ 176 } 177 178 /* 179 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 180 */ 181 #define XDC_DONE(SC,RQ,ER) { \ 182 if ((RQ) == XD_ERR_FAIL) { \ 183 (ER) = (RQ); \ 184 } else { \ 185 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 186 wakeup(&(SC)->ndone); \ 187 (ER) = (SC)->reqs[RQ].errno; \ 188 XDC_FREE((SC), (RQ)); \ 189 } \ 190 } 191 192 /* 193 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 194 */ 195 #define XDC_ADVANCE(IORQ, N) { \ 196 if (N) { \ 197 (IORQ)->sectcnt -= (N); \ 198 (IORQ)->blockno += (N); \ 199 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 200 } \ 201 } 202 203 /* 204 * note - addresses you can sleep on: 205 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 206 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 207 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 208 * to drop below XDC_SUBWAITLIM) 209 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 210 */ 211 212 213 /* 214 * function prototypes 215 * "xdc_*" functions are internal, all others are external interfaces 216 */ 217 218 /* internals */ 219 int xdc_cmd __P((struct xdc_softc *, int, int, int, int, int, char *, int)); 220 char *xdc_e2str __P((int)); 221 int xdc_error __P((struct xdc_softc *, struct xd_iorq *, 222 struct xd_iopb *, int, int)); 223 int xdc_ioctlcmd __P((struct xd_softc *, dev_t dev, struct xd_iocmd *)); 224 void xdc_perror __P((struct xd_iorq *, struct xd_iopb *, int)); 225 int xdc_piodriver __P((struct xdc_softc *, int, int)); 226 int xdc_remove_iorq __P((struct xdc_softc *)); 227 int xdc_reset __P((struct xdc_softc *, int, int, int, struct xd_softc *)); 228 inline void xdc_rqinit __P((struct xd_iorq *, struct xdc_softc *, 229 struct xd_softc *, int, u_long, int, 230 caddr_t, struct buf *)); 231 void xdc_rqtopb __P((struct xd_iorq *, struct xd_iopb *, int, int)); 232 void xdc_start __P((struct xdc_softc *, int)); 233 int xdc_startbuf __P((struct xdc_softc *, struct xd_softc *, struct buf *)); 234 int xdc_submit_iorq __P((struct xdc_softc *, int, int)); 235 void xdc_tick __P((void *)); 236 void xdc_xdreset __P((struct xdc_softc *, struct xd_softc *)); 237 238 /* machine interrupt hook */ 239 int xdcintr __P((void *)); 240 241 /* autoconf */ 242 static int xdcmatch __P((struct device *, struct cfdata *, void *)); 243 static void xdcattach __P((struct device *, struct device *, void *)); 244 static int xdc_print __P((void *, const char *name)); 245 246 static int xdmatch __P((struct device *, struct cfdata *, void *)); 247 static void xdattach __P((struct device *, struct device *, void *)); 248 static void xd_init __P((struct xd_softc *)); 249 250 static void xddummystrat __P((struct buf *)); 251 int xdgetdisklabel __P((struct xd_softc *, void *)); 252 253 /* 254 * cfattach's: device driver interface to autoconfig 255 */ 256 257 struct cfattach xdc_ca = { 258 sizeof(struct xdc_softc), xdcmatch, xdcattach 259 }; 260 261 struct cfattach xd_ca = { 262 sizeof(struct xd_softc), xdmatch, xdattach 263 }; 264 265 extern struct cfdriver xd_cd; 266 267 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 268 int driveno; /* unit number */ 269 char *dvmabuf; /* scratch buffer for reading disk label */ 270 int fullmode; /* submit mode */ 271 int booting; /* are we booting or not? */ 272 }; 273 274 dev_type_open(xdopen); 275 dev_type_close(xdclose); 276 dev_type_read(xdread); 277 dev_type_write(xdwrite); 278 dev_type_ioctl(xdioctl); 279 dev_type_strategy(xdstrategy); 280 dev_type_dump(xddump); 281 dev_type_size(xdsize); 282 283 const struct bdevsw xd_bdevsw = { 284 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 285 }; 286 287 const struct cdevsw xd_cdevsw = { 288 xdopen, xdclose, xdread, xdwrite, xdioctl, 289 nostop, notty, nopoll, nommap, D_DISK 290 }; 291 292 /* 293 * dkdriver 294 */ 295 296 struct dkdriver xddkdriver = {xdstrategy}; 297 298 /* 299 * start: disk label fix code (XXX) 300 */ 301 302 static void *xd_labeldata; 303 304 static void 305 xddummystrat(bp) 306 struct buf *bp; 307 { 308 if (bp->b_bcount != XDFM_BPS) 309 panic("xddummystrat"); 310 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 311 bp->b_flags |= B_DONE; 312 bp->b_flags &= ~B_BUSY; 313 } 314 315 int 316 xdgetdisklabel(xd, b) 317 struct xd_softc *xd; 318 void *b; 319 { 320 char *err; 321 struct sun_disklabel *sdl; 322 323 /* We already have the label data in `b'; setup for dummy strategy */ 324 xd_labeldata = b; 325 326 /* Required parameter for readdisklabel() */ 327 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 328 329 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 330 xddummystrat, 331 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 332 if (err) { 333 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 334 return(XD_ERR_FAIL); 335 } 336 337 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 338 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 339 if (sdl->sl_magic == SUN_DKMAGIC) 340 xd->pcyl = sdl->sl_pcyl; 341 else { 342 printf("%s: WARNING: no `pcyl' in disk label.\n", 343 xd->sc_dev.dv_xname); 344 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 345 xd->sc_dk.dk_label->d_acylinders; 346 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 347 xd->sc_dev.dv_xname, xd->pcyl); 348 } 349 350 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 351 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 352 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 353 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 354 xd->sectpercyl = xd->nhead * xd->nsect; 355 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 356 * sun->bsd */ 357 return(XD_ERR_AOK); 358 } 359 360 /* 361 * end: disk label fix code (XXX) 362 */ 363 364 /* 365 * a u t o c o n f i g f u n c t i o n s 366 */ 367 368 /* 369 * xdcmatch: determine if xdc is present or not. we do a 370 * soft reset to detect the xdc. 371 */ 372 373 int xdcmatch(parent, cf, aux) 374 struct device *parent; 375 struct cfdata *cf; 376 void *aux; 377 { 378 struct confargs *ca = aux; 379 380 /* No default VME address. */ 381 if (ca->ca_paddr == -1) 382 return (0); 383 384 /* Make sure something is there... */ 385 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 11, 1) == -1) 386 return (0); 387 388 /* Default interrupt priority. */ 389 if (ca->ca_intpri == -1) 390 ca->ca_intpri = 2; 391 392 return (1); 393 } 394 395 /* 396 * xdcattach: attach controller 397 */ 398 void 399 xdcattach(parent, self, aux) 400 struct device *parent, *self; 401 void *aux; 402 { 403 struct xdc_softc *xdc = (void *) self; 404 struct confargs *ca = aux; 405 struct xdc_attach_args xa; 406 int lcv, rqno, err; 407 struct xd_iopb_ctrl *ctl; 408 409 /* get addressing and intr level stuff from autoconfig and load it 410 * into our xdc_softc. */ 411 412 xdc->xdc = (struct xdc *) 413 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xdc)); 414 xdc->bustype = ca->ca_bustype; 415 xdc->ipl = ca->ca_intpri; 416 xdc->vector = ca->ca_intvec; 417 418 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 419 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 420 421 /* allocate and zero buffers 422 * 423 * note: we simplify the code by allocating the max number of iopbs and 424 * iorq's up front. thus, we avoid linked lists and the costs 425 * associated with them in exchange for wasting a little memory. */ 426 427 xdc->iopbase = (struct xd_iopb *) 428 dvma_malloc(XDC_MAXIOPB * sizeof(struct xd_iopb)); /* KVA */ 429 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 430 xdc->dvmaiopb = (struct xd_iopb *) 431 dvma_kvtopa(xdc->iopbase, xdc->bustype); 432 xdc->reqs = (struct xd_iorq *) 433 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), M_DEVBUF, M_NOWAIT); 434 if (xdc->reqs == NULL) 435 panic("xdc malloc"); 436 memset(xdc->reqs, 0, XDC_MAXIOPB * sizeof(struct xd_iorq)); 437 438 /* init free list, iorq to iopb pointers, and non-zero fields in the 439 * iopb which never change. */ 440 441 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 442 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 443 xdc->freereq[lcv] = lcv; 444 xdc->iopbase[lcv].fixd = 1; /* always the same */ 445 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 446 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 447 } 448 xdc->nfree = XDC_MAXIOPB; 449 xdc->nrun = 0; 450 xdc->waithead = xdc->waitend = xdc->nwait = 0; 451 xdc->ndone = 0; 452 453 /* init queue of waiting bufs */ 454 455 bufq_alloc(&xdc->sc_wq, BUFQ_FCFS); 456 callout_init(&xdc->sc_tick_ch); 457 458 /* 459 * section 7 of the manual tells us how to init the controller: 460 * - read controller parameters (6/0) 461 * - write controller parameters (5/0) 462 */ 463 464 /* read controller parameters and insure we have a 753/7053 */ 465 466 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 467 if (rqno == XD_ERR_FAIL) { 468 printf(": couldn't read controller params\n"); 469 return; /* shouldn't ever happen */ 470 } 471 ctl = (struct xd_iopb_ctrl *) & xdc->iopbase[rqno]; 472 if (ctl->ctype != XDCT_753) { 473 if (xdc->reqs[rqno].errno) 474 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 475 printf(": doesn't identify as a 753/7053\n"); 476 XDC_DONE(xdc, rqno, err); 477 return; 478 } 479 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 480 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 481 XDC_DONE(xdc, rqno, err); 482 483 /* now write controller parameters (xdc_cmd sets all params for us) */ 484 485 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 486 XDC_DONE(xdc, rqno, err); 487 if (err) { 488 printf("%s: controller config error: %s\n", 489 xdc->sc_dev.dv_xname, xdc_e2str(err)); 490 return; 491 } 492 493 /* link in interrupt with higher level software */ 494 isr_add_vectored(xdcintr, (void *)xdc, 495 ca->ca_intpri, ca->ca_intvec); 496 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 497 xdc->sc_dev.dv_xname, "intr"); 498 499 /* now we must look for disks using autoconfig */ 500 xa.booting = 1; 501 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 502 (void) config_found(self, (void *) &xa, xdc_print); 503 504 /* start the watchdog clock */ 505 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 506 } 507 508 int 509 xdc_print(aux, name) 510 void *aux; 511 const char *name; 512 { 513 struct xdc_attach_args *xa = aux; 514 515 if (name != NULL) 516 printf("%s: ", name); 517 518 if (xa->driveno != -1) 519 printf(" drive %d", xa->driveno); 520 521 return UNCONF; 522 } 523 524 /* 525 * xdmatch: probe for disk. 526 * 527 * note: we almost always say disk is present. this allows us to 528 * spin up and configure a disk after the system is booted (we can 529 * call xdattach!). Also, wire down the relationship between the 530 * xd* and xdc* devices, to simplify boot device identification. 531 */ 532 int 533 xdmatch(parent, cf, aux) 534 struct device *parent; 535 struct cfdata *cf; 536 void *aux; 537 { 538 struct xdc_attach_args *xa = aux; 539 int xd_unit; 540 541 /* Match only on the "wired-down" controller+disk. */ 542 xd_unit = parent->dv_unit * 2 + xa->driveno; 543 if (cf->cf_unit != xd_unit) 544 return (0); 545 546 return (1); 547 } 548 549 /* 550 * xdattach: attach a disk. 551 */ 552 void 553 xdattach(parent, self, aux) 554 struct device *parent, *self; 555 void *aux; 556 557 { 558 struct xd_softc *xd = (void *) self; 559 struct xdc_softc *xdc = (void *) parent; 560 struct xdc_attach_args *xa = aux; 561 562 printf("\n"); 563 564 /* 565 * Always re-initialize the disk structure. We want statistics 566 * to start with a clean slate. 567 */ 568 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 569 xd->sc_dk.dk_driver = &xddkdriver; 570 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 571 572 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 573 xd->flags = 0; 574 xd->parent = xdc; 575 576 xd->xd_drive = xa->driveno; 577 xdc->sc_drives[xa->driveno] = xd; 578 579 /* Do init work common to attach and open. */ 580 xd_init(xd); 581 } 582 583 /* 584 * end of autoconfig functions 585 */ 586 587 /* 588 * Initialize a disk. This can be called from both autoconf and 589 * also from xdopen/xdstrategy. 590 */ 591 static void 592 xd_init(xd) 593 struct xd_softc *xd; 594 { 595 struct xdc_softc *xdc; 596 struct dkbad *dkb; 597 struct xd_iopb_drive *driopb; 598 void *dvmabuf; 599 int rqno, err, spt, mb, blk, lcv, fullmode, newstate; 600 601 xdc = xd->parent; 602 xd->state = XD_DRIVE_ATTACHING; 603 newstate = XD_DRIVE_UNKNOWN; 604 fullmode = (cold) ? XD_SUB_POLL : XD_SUB_WAIT; 605 dvmabuf = dvma_malloc(XDFM_BPS); 606 607 /* first try and reset the drive */ 608 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fullmode); 609 XDC_DONE(xdc, rqno, err); 610 if (err == XD_ERR_NRDY) { 611 printf("%s: drive %d: off-line\n", 612 xd->sc_dev.dv_xname, xd->xd_drive); 613 goto done; 614 } 615 if (err) { 616 printf("%s: ERROR 0x%02x (%s)\n", 617 xd->sc_dev.dv_xname, err, xdc_e2str(err)); 618 goto done; 619 } 620 printf("%s: drive %d ready\n", 621 xd->sc_dev.dv_xname, xd->xd_drive); 622 623 /* now set format parameters */ 624 625 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 626 0, 0, 0, fullmode); 627 XDC_DONE(xdc, rqno, err); 628 if (err) { 629 printf("%s: write format parameters failed: %s\n", 630 xd->sc_dev.dv_xname, xdc_e2str(err)); 631 goto done; 632 } 633 634 /* get drive parameters */ 635 spt = 0; 636 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 637 0, 0, 0, fullmode); 638 if (rqno != XD_ERR_FAIL) { 639 driopb = (struct xd_iopb_drive *) & xdc->iopbase[rqno]; 640 spt = driopb->sectpertrk; 641 } 642 XDC_DONE(xdc, rqno, err); 643 if (err) { 644 printf("%s: read drive parameters failed: %s\n", 645 xd->sc_dev.dv_xname, xdc_e2str(err)); 646 goto done; 647 } 648 649 /* 650 * now set drive parameters (to semi-bogus values) so we can read the 651 * disk label. 652 */ 653 xd->pcyl = xd->ncyl = 1; 654 xd->acyl = 0; 655 xd->nhead = 1; 656 xd->nsect = 1; 657 xd->sectpercyl = 1; 658 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 659 xd->dkb.bt_bad[lcv].bt_cyl = 660 xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 661 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 662 0, 0, 0, fullmode); 663 XDC_DONE(xdc, rqno, err); 664 if (err) { 665 printf("%s: write drive parameters failed: %s\n", 666 xd->sc_dev.dv_xname, xdc_e2str(err)); 667 goto done; 668 } 669 670 /* read disk label */ 671 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 672 0, 1, dvmabuf, fullmode); 673 XDC_DONE(xdc, rqno, err); 674 if (err) { 675 printf("%s: reading disk label failed: %s\n", 676 xd->sc_dev.dv_xname, xdc_e2str(err)); 677 goto done; 678 } 679 newstate = XD_DRIVE_NOLABEL; 680 681 xd->hw_spt = spt; 682 /* Attach the disk: must be before getdisklabel to malloc label */ 683 disk_attach(&xd->sc_dk); 684 685 if (xdgetdisklabel(xd, dvmabuf) != XD_ERR_AOK) 686 goto done; 687 688 /* inform the user of what is up */ 689 printf("%s: <%s>, pcyl %d, hw_spt %d\n", 690 xd->sc_dev.dv_xname, 691 (char *)dvmabuf, xd->pcyl, spt); 692 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 693 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 694 xd->sc_dev.dv_xname, mb, 695 xd->ncyl, xd->nhead, xd->nsect); 696 697 /* now set the real drive parameters! */ 698 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 699 0, 0, 0, fullmode); 700 XDC_DONE(xdc, rqno, err); 701 if (err) { 702 printf("%s: write real drive parameters failed: %s\n", 703 xd->sc_dev.dv_xname, xdc_e2str(err)); 704 goto done; 705 } 706 newstate = XD_DRIVE_ONLINE; 707 708 /* 709 * read bad144 table. this table resides on the first sector of the 710 * last track of the disk (i.e. second cyl of "acyl" area). 711 */ 712 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 713 (xd->nhead - 1) * xd->nsect; /* last head */ 714 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 715 blk, 1, dvmabuf, fullmode); 716 XDC_DONE(xdc, rqno, err); 717 if (err) { 718 printf("%s: reading bad144 failed: %s\n", 719 xd->sc_dev.dv_xname, xdc_e2str(err)); 720 goto done; 721 } 722 723 /* check dkbad for sanity */ 724 dkb = (struct dkbad *) dvmabuf; 725 for (lcv = 0; lcv < 126; lcv++) { 726 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 727 dkb->bt_bad[lcv].bt_cyl == 0) && 728 dkb->bt_bad[lcv].bt_trksec == 0xffff) 729 continue; /* blank */ 730 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 731 break; 732 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 733 break; 734 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 735 break; 736 } 737 if (lcv != 126) { 738 printf("%s: warning: invalid bad144 sector!\n", 739 xd->sc_dev.dv_xname); 740 } else { 741 memcpy(&xd->dkb, dvmabuf, XDFM_BPS); 742 } 743 744 done: 745 xd->state = newstate; 746 dvma_free(dvmabuf, XDFM_BPS); 747 } 748 749 /* 750 * { b , c } d e v s w f u n c t i o n s 751 */ 752 753 /* 754 * xdclose: close device 755 */ 756 int 757 xdclose(dev, flag, fmt, p) 758 dev_t dev; 759 int flag, fmt; 760 struct proc *p; 761 { 762 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 763 int part = DISKPART(dev); 764 765 /* clear mask bits */ 766 767 switch (fmt) { 768 case S_IFCHR: 769 xd->sc_dk.dk_copenmask &= ~(1 << part); 770 break; 771 case S_IFBLK: 772 xd->sc_dk.dk_bopenmask &= ~(1 << part); 773 break; 774 } 775 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 776 777 return 0; 778 } 779 780 /* 781 * xddump: crash dump system 782 */ 783 int 784 xddump(dev, blkno, va, sz) 785 dev_t dev; 786 daddr_t blkno; 787 caddr_t va; 788 size_t sz; 789 { 790 int unit, part; 791 struct xd_softc *xd; 792 793 unit = DISKUNIT(dev); 794 if (unit >= xd_cd.cd_ndevs) 795 return ENXIO; 796 part = DISKPART(dev); 797 798 xd = xd_cd.cd_devs[unit]; 799 800 printf("%s%c: crash dump not supported (yet)\n", 801 xd->sc_dev.dv_xname, 'a' + part); 802 803 return ENXIO; 804 805 /* outline: globals: "dumplo" == sector number of partition to start 806 * dump at (convert to physical sector with partition table) 807 * "dumpsize" == size of dump in clicks "physmem" == size of physical 808 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 809 * physmem) 810 * 811 * dump a copy of physical memory to the dump device starting at sector 812 * "dumplo" in the swap partition (make sure > 0). map in pages as 813 * we go. use polled I/O. 814 * 815 * XXX how to handle NON_CONTIG? 816 */ 817 } 818 819 /* 820 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 821 */ 822 int 823 xdioctl(dev, command, addr, flag, p) 824 dev_t dev; 825 u_long command; 826 caddr_t addr; 827 int flag; 828 struct proc *p; 829 830 { 831 struct xd_softc *xd; 832 struct xd_iocmd *xio; 833 int error, s, unit; 834 835 unit = DISKUNIT(dev); 836 837 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 838 return (ENXIO); 839 840 /* switch on ioctl type */ 841 842 switch (command) { 843 case DIOCSBAD: /* set bad144 info */ 844 if ((flag & FWRITE) == 0) 845 return EBADF; 846 s = splbio(); 847 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 848 splx(s); 849 return 0; 850 851 case DIOCGDINFO: /* get disk label */ 852 memcpy(addr, xd->sc_dk.dk_label, sizeof(struct disklabel)); 853 return 0; 854 855 case DIOCGPART: /* get partition info */ 856 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 857 ((struct partinfo *) addr)->part = 858 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 859 return 0; 860 861 case DIOCSDINFO: /* set disk label */ 862 if ((flag & FWRITE) == 0) 863 return EBADF; 864 error = setdisklabel(xd->sc_dk.dk_label, 865 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 866 xd->sc_dk.dk_cpulabel); 867 if (error == 0) { 868 if (xd->state == XD_DRIVE_NOLABEL) 869 xd->state = XD_DRIVE_ONLINE; 870 } 871 return error; 872 873 case DIOCWLABEL: /* change write status of disk label */ 874 if ((flag & FWRITE) == 0) 875 return EBADF; 876 if (*(int *) addr) 877 xd->flags |= XD_WLABEL; 878 else 879 xd->flags &= ~XD_WLABEL; 880 return 0; 881 882 case DIOCWDINFO: /* write disk label */ 883 if ((flag & FWRITE) == 0) 884 return EBADF; 885 error = setdisklabel(xd->sc_dk.dk_label, 886 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 887 xd->sc_dk.dk_cpulabel); 888 if (error == 0) { 889 if (xd->state == XD_DRIVE_NOLABEL) 890 xd->state = XD_DRIVE_ONLINE; 891 892 /* Simulate opening partition 0 so write succeeds. */ 893 xd->sc_dk.dk_openmask |= (1 << 0); 894 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 895 xdstrategy, xd->sc_dk.dk_label, 896 xd->sc_dk.dk_cpulabel); 897 xd->sc_dk.dk_openmask = 898 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 899 } 900 return error; 901 902 case DIOSXDCMD: 903 xio = (struct xd_iocmd *) addr; 904 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 905 return (error); 906 return (xdc_ioctlcmd(xd, dev, xio)); 907 908 default: 909 return ENOTTY; 910 } 911 } 912 913 /* 914 * xdopen: open drive 915 */ 916 int 917 xdopen(dev, flag, fmt, p) 918 dev_t dev; 919 int flag, fmt; 920 struct proc *p; 921 { 922 int err, unit, part, s; 923 struct xd_softc *xd; 924 925 /* first, could it be a valid target? */ 926 unit = DISKUNIT(dev); 927 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 928 return (ENXIO); 929 part = DISKPART(dev); 930 err = 0; 931 932 /* 933 * If some other processing is doing init, sleep. 934 */ 935 s = splbio(); 936 while (xd->state == XD_DRIVE_ATTACHING) { 937 if (tsleep(&xd->state, PRIBIO, "xdopen", 0)) { 938 err = EINTR; 939 goto done; 940 } 941 } 942 /* Do we need to init the drive? */ 943 if (xd->state == XD_DRIVE_UNKNOWN) { 944 xd_init(xd); 945 wakeup(&xd->state); 946 } 947 /* Was the init successful? */ 948 if (xd->state == XD_DRIVE_UNKNOWN) { 949 err = EIO; 950 goto done; 951 } 952 953 /* check for partition */ 954 if (part != RAW_PART && 955 (part >= xd->sc_dk.dk_label->d_npartitions || 956 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 957 err = ENXIO; 958 goto done; 959 } 960 961 /* set open masks */ 962 switch (fmt) { 963 case S_IFCHR: 964 xd->sc_dk.dk_copenmask |= (1 << part); 965 break; 966 case S_IFBLK: 967 xd->sc_dk.dk_bopenmask |= (1 << part); 968 break; 969 } 970 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 971 972 done: 973 splx(s); 974 return (err); 975 } 976 977 int 978 xdread(dev, uio, flags) 979 dev_t dev; 980 struct uio *uio; 981 int flags; 982 { 983 984 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 985 } 986 987 int 988 xdwrite(dev, uio, flags) 989 dev_t dev; 990 struct uio *uio; 991 int flags; 992 { 993 994 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 995 } 996 997 998 /* 999 * xdsize: return size of a partition for a dump 1000 */ 1001 int 1002 xdsize(dev) 1003 dev_t dev; 1004 1005 { 1006 struct xd_softc *xdsc; 1007 int unit, part, size, omask; 1008 1009 /* valid unit? */ 1010 unit = DISKUNIT(dev); 1011 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1012 return (-1); 1013 1014 part = DISKPART(dev); 1015 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1016 1017 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1018 return (-1); 1019 1020 /* do it */ 1021 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1022 size = -1; /* only give valid size for swap partitions */ 1023 else 1024 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1025 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1026 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1027 return (-1); 1028 return (size); 1029 } 1030 1031 /* 1032 * xdstrategy: buffering system interface to xd. 1033 */ 1034 void 1035 xdstrategy(bp) 1036 struct buf *bp; 1037 1038 { 1039 struct xd_softc *xd; 1040 struct xdc_softc *parent; 1041 int s, unit; 1042 1043 unit = DISKUNIT(bp->b_dev); 1044 1045 /* check for live device */ 1046 1047 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1048 bp->b_blkno < 0 || 1049 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1050 bp->b_error = EINVAL; 1051 goto bad; 1052 } 1053 1054 /* There should always be an open first. */ 1055 if (xd->state == XD_DRIVE_UNKNOWN) { 1056 bp->b_error = EIO; 1057 goto bad; 1058 } 1059 1060 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1061 /* no I/O to unlabeled disks, unless raw partition */ 1062 bp->b_error = EIO; 1063 goto bad; 1064 } 1065 /* short circuit zero length request */ 1066 1067 if (bp->b_bcount == 0) 1068 goto done; 1069 1070 /* check bounds with label (disksubr.c). Determine the size of the 1071 * transfer, and make sure it is within the boundaries of the 1072 * partition. Adjust transfer if needed, and signal errors or early 1073 * completion. */ 1074 1075 if (bounds_check_with_label(bp, xd->sc_dk.dk_label, 1076 (xd->flags & XD_WLABEL) != 0) <= 0) 1077 goto done; 1078 1079 /* 1080 * now we know we have a valid buf structure that we need to do I/O 1081 * on. 1082 * 1083 * note that we don't disksort because the controller has a sorting 1084 * algorithm built into the hardware. 1085 */ 1086 1087 s = splbio(); /* protect the queues */ 1088 1089 /* first, give jobs in front of us a chance */ 1090 parent = xd->parent; 1091 while (parent->nfree > 0 && BUFQ_PEEK(&parent->sc_wq) != NULL) 1092 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1093 break; 1094 1095 /* 1096 * if there are no free iorq's, then we just queue and return. the 1097 * buffs will get picked up later by xdcintr(). 1098 */ 1099 if (parent->nfree == 0) { 1100 BUFQ_PUT(&parent->sc_wq, bp); 1101 splx(s); 1102 return; 1103 } 1104 1105 /* now we have free iopb's and we are at splbio... start 'em up */ 1106 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1107 return; 1108 } 1109 1110 /* done! */ 1111 1112 splx(s); 1113 return; 1114 1115 bad: /* tells upper layers we have an error */ 1116 bp->b_flags |= B_ERROR; 1117 done: /* tells upper layers we are done with this 1118 * buf */ 1119 bp->b_resid = bp->b_bcount; 1120 biodone(bp); 1121 } 1122 /* 1123 * end of {b,c}devsw functions 1124 */ 1125 1126 /* 1127 * i n t e r r u p t f u n c t i o n 1128 * 1129 * xdcintr: hardware interrupt. 1130 */ 1131 int 1132 xdcintr(v) 1133 void *v; 1134 1135 { 1136 struct xdc_softc *xdcsc = v; 1137 1138 /* kick the event counter */ 1139 xdcsc->sc_intrcnt.ev_count++; 1140 1141 /* remove as many done IOPBs as possible */ 1142 xdc_remove_iorq(xdcsc); 1143 1144 /* start any iorq's already waiting */ 1145 xdc_start(xdcsc, XDC_MAXIOPB); 1146 1147 /* fill up any remaining iorq's with queue'd buffers */ 1148 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1149 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1150 break; 1151 1152 return (1); 1153 } 1154 /* 1155 * end of interrupt function 1156 */ 1157 1158 /* 1159 * i n t e r n a l f u n c t i o n s 1160 */ 1161 1162 /* 1163 * xdc_rqinit: fill out the fields of an I/O request 1164 */ 1165 1166 inline void 1167 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1168 struct xd_iorq *rq; 1169 struct xdc_softc *xdc; 1170 struct xd_softc *xd; 1171 int md; 1172 u_long blk; 1173 int cnt; 1174 caddr_t db; 1175 struct buf *bp; 1176 { 1177 rq->xdc = xdc; 1178 rq->xd = xd; 1179 rq->ttl = XDC_MAXTTL + 10; 1180 rq->mode = md; 1181 rq->tries = rq->errno = rq->lasterror = 0; 1182 rq->blockno = blk; 1183 rq->sectcnt = cnt; 1184 rq->dbuf = rq->dbufbase = db; 1185 rq->buf = bp; 1186 } 1187 1188 /* 1189 * xdc_rqtopb: load up an IOPB based on an iorq 1190 */ 1191 void 1192 xdc_rqtopb(iorq, iopb, cmd, subfun) 1193 struct xd_iorq *iorq; 1194 struct xd_iopb *iopb; 1195 int cmd, subfun; 1196 1197 { 1198 u_long block, dp; 1199 1200 /* standard stuff */ 1201 1202 iopb->errs = iopb->done = 0; 1203 iopb->comm = cmd; 1204 iopb->errno = iopb->status = 0; 1205 iopb->subfun = subfun; 1206 if (iorq->xd) 1207 iopb->unit = iorq->xd->xd_drive; 1208 else 1209 iopb->unit = 0; 1210 1211 /* check for alternate IOPB format */ 1212 1213 if (cmd == XDCMD_WRP) { 1214 switch (subfun) { 1215 case XDFUN_CTL:{ 1216 struct xd_iopb_ctrl *ctrl = 1217 (struct xd_iopb_ctrl *) iopb; 1218 iopb->lll = 0; 1219 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1220 ? 0 1221 : iorq->xdc->ipl; 1222 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1223 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1224 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1225 XDPC_RBC | XDPC_ECC2; 1226 ctrl->throttle = XDC_THROTTLE; 1227 #ifdef sparc 1228 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 1229 ctrl->delay = XDC_DELAY_4_300; 1230 else 1231 ctrl->delay = XDC_DELAY_SPARC; 1232 #endif 1233 #ifdef sun3 1234 ctrl->delay = XDC_DELAY_SUN3; 1235 #endif 1236 break; 1237 } 1238 case XDFUN_DRV:{ 1239 struct xd_iopb_drive *drv = 1240 (struct xd_iopb_drive *)iopb; 1241 /* we assume that the disk label has the right 1242 * info */ 1243 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1244 drv->dparam_ipl = (XDC_DPARAM << 3); 1245 else 1246 drv->dparam_ipl = (XDC_DPARAM << 3) | 1247 iorq->xdc->ipl; 1248 drv->maxsect = iorq->xd->nsect - 1; 1249 drv->maxsector = drv->maxsect; 1250 /* note: maxsector != maxsect only if you are 1251 * doing cyl sparing */ 1252 drv->headoff = 0; 1253 drv->maxcyl = iorq->xd->pcyl - 1; 1254 drv->maxhead = iorq->xd->nhead - 1; 1255 break; 1256 } 1257 case XDFUN_FMT:{ 1258 struct xd_iopb_format *form = 1259 (struct xd_iopb_format *) iopb; 1260 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1261 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1262 else 1263 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1264 iorq->xdc->ipl; 1265 form->field1 = XDFM_FIELD1; 1266 form->field2 = XDFM_FIELD2; 1267 form->field3 = XDFM_FIELD3; 1268 form->field4 = XDFM_FIELD4; 1269 form->bytespersec = XDFM_BPS; 1270 form->field6 = XDFM_FIELD6; 1271 form->field7 = XDFM_FIELD7; 1272 break; 1273 } 1274 } 1275 } else { 1276 1277 /* normal IOPB case (harmless to RDP command) */ 1278 1279 iopb->lll = 0; 1280 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1281 ? 0 1282 : iorq->xdc->ipl; 1283 iopb->sectcnt = iorq->sectcnt; 1284 block = iorq->blockno; 1285 if (iorq->xd == NULL || block == 0) { 1286 iopb->sectno = iopb->headno = iopb->cylno = 0; 1287 } else { 1288 iopb->sectno = block % iorq->xd->nsect; 1289 block = block / iorq->xd->nsect; 1290 iopb->headno = block % iorq->xd->nhead; 1291 block = block / iorq->xd->nhead; 1292 iopb->cylno = block; 1293 } 1294 iopb->daddr = dp = (iorq->dbuf == NULL) ? 0 : 1295 dvma_kvtopa(iorq->dbuf, iorq->xdc->bustype); 1296 iopb->addrmod = XDC_ADDRMOD; 1297 } 1298 } 1299 1300 /* 1301 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1302 * If you've already got an IORQ, you can call submit directly (currently 1303 * there is no need to do this). NORM requests are handled separately. 1304 */ 1305 int 1306 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1307 struct xdc_softc *xdcsc; 1308 int cmd, subfn, unit, block, scnt; 1309 char *dptr; 1310 int fullmode; 1311 1312 { 1313 struct xd_iorq *iorq; 1314 struct xd_iopb *iopb; 1315 int rqno, retry; 1316 int submode = XD_STATE(fullmode); 1317 1318 /* get iorq/iopb */ 1319 switch (submode) { 1320 case XD_SUB_POLL: 1321 while (xdcsc->nfree == 0) { 1322 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1323 return (XD_ERR_FAIL); 1324 } 1325 break; 1326 case XD_SUB_WAIT: 1327 retry = 1; 1328 while (retry) { 1329 while (xdcsc->nfree == 0) { 1330 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1331 return (XD_ERR_FAIL); 1332 } 1333 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1334 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1335 return (XD_ERR_FAIL); 1336 } 1337 if (xdcsc->nfree) 1338 retry = 0; /* got it */ 1339 } 1340 break; 1341 default: 1342 return (XD_ERR_FAIL); /* illegal */ 1343 } 1344 if (xdcsc->nfree == 0) 1345 panic("xdcmd nfree"); 1346 rqno = XDC_RQALLOC(xdcsc); 1347 iorq = &xdcsc->reqs[rqno]; 1348 iopb = iorq->iopb; 1349 1350 1351 /* init iorq/iopb */ 1352 xdc_rqinit(iorq, xdcsc, 1353 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1354 fullmode, block, scnt, dptr, NULL); 1355 1356 /* load IOPB from iorq */ 1357 xdc_rqtopb(iorq, iopb, cmd, subfn); 1358 1359 /* submit it for processing */ 1360 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1361 1362 return (rqno); 1363 } 1364 1365 /* 1366 * xdc_startbuf 1367 * start a buffer running, assumes nfree > 0 1368 */ 1369 int 1370 xdc_startbuf(xdcsc, xdsc, bp) 1371 struct xdc_softc *xdcsc; 1372 struct xd_softc *xdsc; 1373 struct buf *bp; 1374 1375 { 1376 int rqno, partno; 1377 struct xd_iorq *iorq; 1378 struct xd_iopb *iopb; 1379 u_long block; 1380 caddr_t dbuf; 1381 1382 if (!xdcsc->nfree) 1383 panic("xdc_startbuf free"); 1384 rqno = XDC_RQALLOC(xdcsc); 1385 iorq = &xdcsc->reqs[rqno]; 1386 iopb = iorq->iopb; 1387 1388 /* get buf */ 1389 1390 if (bp == NULL) { 1391 bp = BUFQ_GET(&xdcsc->sc_wq); 1392 if (bp == NULL) 1393 panic("xdc_startbuf bp"); 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, 0); 1430 if (dbuf == NULL) { /* out of DVMA space */ 1431 printf("%s: warning: out of DVMA space\n", 1432 xdcsc->sc_dev.dv_xname); 1433 XDC_FREE(xdcsc, rqno); 1434 BUFQ_PUT(&xdcsc->sc_wq, bp); 1435 return (XD_ERR_FAIL); /* XXX: need some sort of 1436 * call-back scheme here? */ 1437 } 1438 1439 /* init iorq and load iopb from it */ 1440 1441 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1442 bp->b_bcount / XDFM_BPS, dbuf, bp); 1443 1444 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1445 1446 /* Instrumentation. */ 1447 disk_busy(&xdsc->sc_dk); 1448 1449 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1450 1451 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1452 return (XD_ERR_AOK); 1453 } 1454 1455 1456 /* 1457 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1458 * if ok. if it fail returns an error code. type is XD_SUB_*. 1459 * 1460 * note: caller frees iorq in all cases except NORM 1461 * 1462 * return value: 1463 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1464 * WAIT: XD_AOK (success), <error-code> (failed) 1465 * POLL: <same as WAIT> 1466 * NOQ : <same as NORM> 1467 * 1468 * there are three sources for i/o requests: 1469 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1470 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1471 * [3] open/ioctl: these are I/O requests done in the context of a process, 1472 * and the process should block until they are done. 1473 * 1474 * software state is stored in the iorq structure. each iorq has an 1475 * iopb structure. the hardware understands the iopb structure. 1476 * every command must go through an iopb. a 7053 can only handle 1477 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1478 * DVMA space at boot up time. what happens if we run out of iopb's? 1479 * for i/o type [1], the buffers are queued at the "buff" layer and 1480 * picked up later by the interrupt routine. for case [2] the 1481 * programmed i/o driver is called with a special flag that says 1482 * return when one iopb is free. for case [3] the process can sleep 1483 * on the iorq free list until some iopbs are avaliable. 1484 */ 1485 1486 1487 int 1488 xdc_submit_iorq(xdcsc, iorqno, type) 1489 struct xdc_softc *xdcsc; 1490 int iorqno; 1491 int type; 1492 1493 { 1494 u_long iopbaddr; 1495 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1496 1497 #ifdef XDC_DEBUG 1498 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1499 iorqno, type); 1500 #endif 1501 1502 /* first check and see if controller is busy */ 1503 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1504 #ifdef XDC_DEBUG 1505 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1506 #endif 1507 if (type == XD_SUB_NOQ) 1508 return (XD_ERR_FAIL); /* failed */ 1509 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1510 switch (type) { 1511 case XD_SUB_NORM: 1512 return XD_ERR_AOK; /* success */ 1513 case XD_SUB_WAIT: 1514 while (iorq->iopb->done == 0) { 1515 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1516 } 1517 return (iorq->errno); 1518 case XD_SUB_POLL: 1519 return (xdc_piodriver(xdcsc, iorqno, 0)); 1520 default: 1521 panic("xdc_submit_iorq adding"); 1522 } 1523 } 1524 #ifdef XDC_DEBUG 1525 { 1526 u_char *rio = (u_char *) iorq->iopb; 1527 int sz = sizeof(struct xd_iopb), lcv; 1528 printf("%s: aio #%d [", 1529 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1530 for (lcv = 0; lcv < sz; lcv++) 1531 printf(" %02x", rio[lcv]); 1532 printf("]\n"); 1533 } 1534 #endif /* XDC_DEBUG */ 1535 1536 /* controller not busy, start command */ 1537 iopbaddr = dvma_kvtopa(iorq->iopb, xdcsc->bustype); 1538 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1539 xdcsc->nrun++; 1540 /* command now running, wrap it up */ 1541 switch (type) { 1542 case XD_SUB_NORM: 1543 case XD_SUB_NOQ: 1544 return (XD_ERR_AOK); /* success */ 1545 case XD_SUB_WAIT: 1546 while (iorq->iopb->done == 0) { 1547 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1548 } 1549 return (iorq->errno); 1550 case XD_SUB_POLL: 1551 return (xdc_piodriver(xdcsc, iorqno, 0)); 1552 default: 1553 panic("xdc_submit_iorq wrap up"); 1554 } 1555 panic("xdc_submit_iorq"); 1556 return 0; /* not reached */ 1557 } 1558 1559 1560 /* 1561 * xdc_piodriver 1562 * 1563 * programmed i/o driver. this function takes over the computer 1564 * and drains off all i/o requests. it returns the status of the iorq 1565 * the caller is interesting in. if freeone is true, then it returns 1566 * when there is a free iorq. 1567 */ 1568 int 1569 xdc_piodriver(xdcsc, iorqno, freeone) 1570 struct xdc_softc *xdcsc; 1571 int iorqno; 1572 int freeone; 1573 1574 { 1575 int nreset = 0; 1576 int retval = 0; 1577 u_long count; 1578 struct xdc *xdc = xdcsc->xdc; 1579 #ifdef XDC_DEBUG 1580 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1581 iorqno, freeone); 1582 #endif 1583 1584 while (xdcsc->nwait || xdcsc->nrun) { 1585 #ifdef XDC_DEBUG 1586 printf("xdc_piodriver: wait=%d, run=%d\n", 1587 xdcsc->nwait, xdcsc->nrun); 1588 #endif 1589 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1590 #ifdef XDC_DEBUG 1591 printf("xdc_piodriver: done wait with count = %d\n", count); 1592 #endif 1593 /* we expect some progress soon */ 1594 if (count == 0 && nreset >= 2) { 1595 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1596 #ifdef XDC_DEBUG 1597 printf("xdc_piodriver: timeout\n"); 1598 #endif 1599 return (XD_ERR_FAIL); 1600 } 1601 if (count == 0) { 1602 if (xdc_reset(xdcsc, 0, 1603 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1604 XD_ERR_FAIL, 1605 0) == XD_ERR_FAIL) 1606 return (XD_ERR_FAIL); /* flushes all but POLL 1607 * requests, resets */ 1608 continue; 1609 } 1610 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1611 if (freeone) { 1612 if (xdcsc->nrun < XDC_MAXIOPB) { 1613 #ifdef XDC_DEBUG 1614 printf("xdc_piodriver: done: one free\n"); 1615 #endif 1616 return (XD_ERR_AOK); 1617 } 1618 continue; /* don't xdc_start */ 1619 } 1620 xdc_start(xdcsc, XDC_MAXIOPB); 1621 } 1622 1623 /* get return value */ 1624 1625 retval = xdcsc->reqs[iorqno].errno; 1626 1627 #ifdef XDC_DEBUG 1628 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1629 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1630 #endif 1631 1632 /* now that we've drained everything, start up any bufs that have 1633 * queued */ 1634 1635 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1636 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1637 break; 1638 1639 return (retval); 1640 } 1641 1642 /* 1643 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1644 * we steal iopb[0] for this, but we put it back when we are done. 1645 */ 1646 void 1647 xdc_xdreset(xdcsc, xdsc) 1648 struct xdc_softc *xdcsc; 1649 struct xd_softc *xdsc; 1650 1651 { 1652 struct xd_iopb tmpiopb; 1653 u_long addr; 1654 int del; 1655 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1656 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1657 xdcsc->iopbase->comm = XDCMD_RST; 1658 xdcsc->iopbase->unit = xdsc->xd_drive; 1659 addr = (u_long) xdcsc->dvmaiopb; 1660 XDC_GO(xdcsc->xdc, addr); /* go! */ 1661 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1662 if (del <= 0 || xdcsc->iopbase->errs) { 1663 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1664 xdc_e2str(xdcsc->iopbase->errno)); 1665 xdcsc->xdc->xdc_csr = XDC_RESET; 1666 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1667 if (del <= 0) 1668 panic("xdc_reset"); 1669 } else { 1670 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1671 } 1672 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1673 } 1674 1675 1676 /* 1677 * xdc_reset: reset everything: requests are marked as errors except 1678 * a polled request (which is resubmitted) 1679 */ 1680 int 1681 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1682 struct xdc_softc *xdcsc; 1683 int quiet, blastmode, error; 1684 struct xd_softc *xdsc; 1685 1686 { 1687 int del = 0, lcv, retval = XD_ERR_AOK; 1688 int oldfree = xdcsc->nfree; 1689 struct xd_iorq *iorq; 1690 1691 /* soft reset hardware */ 1692 1693 if (!quiet) 1694 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1695 xdcsc->xdc->xdc_csr = XDC_RESET; 1696 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1697 if (del <= 0) { 1698 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1699 retval = XD_ERR_FAIL; 1700 } 1701 if (xdsc) 1702 xdc_xdreset(xdcsc, xdsc); 1703 1704 /* fix queues based on "blast-mode" */ 1705 1706 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1707 iorq = &xdcsc->reqs[lcv]; 1708 1709 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1710 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1711 XD_STATE(iorq->mode) != XD_SUB_NORM) 1712 /* is it active? */ 1713 continue; 1714 1715 xdcsc->nrun--; /* it isn't running any more */ 1716 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1717 /* failed */ 1718 iorq->errno = error; 1719 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1720 switch (XD_STATE(iorq->mode)) { 1721 case XD_SUB_NORM: 1722 iorq->buf->b_error = EIO; 1723 iorq->buf->b_flags |= B_ERROR; 1724 iorq->buf->b_resid = 1725 iorq->sectcnt * XDFM_BPS; 1726 /* Sun3: map/unmap regardless of B_PHYS */ 1727 dvma_mapout(iorq->dbufbase, 1728 iorq->buf->b_bcount); 1729 disk_unbusy(&iorq->xd->sc_dk, 1730 (iorq->buf->b_bcount - iorq->buf->b_resid)); 1731 biodone(iorq->buf); 1732 XDC_FREE(xdcsc, lcv); /* add to free list */ 1733 break; 1734 case XD_SUB_WAIT: 1735 wakeup(iorq); 1736 case XD_SUB_POLL: 1737 xdcsc->ndone++; 1738 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1739 break; 1740 } 1741 1742 } else { 1743 1744 /* resubmit, put at front of wait queue */ 1745 XDC_HWAIT(xdcsc, lcv); 1746 } 1747 } 1748 1749 /* 1750 * now, if stuff is waiting, start it. 1751 * since we just reset it should go 1752 */ 1753 xdc_start(xdcsc, XDC_MAXIOPB); 1754 1755 /* ok, we did it */ 1756 if (oldfree == 0 && xdcsc->nfree) 1757 wakeup(&xdcsc->nfree); 1758 1759 #ifdef XDC_DIAG 1760 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1761 if (del != XDC_MAXIOPB) 1762 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1763 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1764 else 1765 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1766 printf("%s: diag: lots of done jobs (%d)\n", 1767 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1768 #endif 1769 printf("RESET DONE\n"); 1770 return (retval); 1771 } 1772 1773 /* 1774 * xdc_start: start all waiting buffers 1775 */ 1776 void 1777 xdc_start(xdcsc, maxio) 1778 struct xdc_softc *xdcsc; 1779 int maxio; 1780 1781 { 1782 int rqno; 1783 while (maxio && xdcsc->nwait && 1784 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1785 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1786 * param */ 1787 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1788 panic("xdc_start"); /* should never happen */ 1789 maxio--; 1790 } 1791 } 1792 1793 /* 1794 * xdc_remove_iorq: remove "done" IOPB's. 1795 */ 1796 int 1797 xdc_remove_iorq(xdcsc) 1798 struct xdc_softc *xdcsc; 1799 1800 { 1801 int errno, rqno, comm, errs; 1802 struct xdc *xdc = xdcsc->xdc; 1803 struct xd_iopb *iopb; 1804 struct xd_iorq *iorq; 1805 struct buf *bp; 1806 1807 if (xdc->xdc_csr & XDC_F_ERROR) { 1808 /* 1809 * FATAL ERROR: should never happen under normal use. This 1810 * error is so bad, you can't even tell which IOPB is bad, so 1811 * we dump them all. 1812 */ 1813 errno = xdc->xdc_f_err; 1814 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 1815 errno, xdc_e2str(errno)); 1816 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 1817 printf("%s: soft reset failed!\n", 1818 xdcsc->sc_dev.dv_xname); 1819 panic("xdc_remove_iorq: controller DEAD"); 1820 } 1821 return (XD_ERR_AOK); 1822 } 1823 1824 /* 1825 * get iopb that is done 1826 * 1827 * hmm... I used to read the address of the done IOPB off the VME 1828 * registers and calculate the rqno directly from that. that worked 1829 * until I started putting a load on the controller. when loaded, i 1830 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1831 * be set, even after DELAY'ing a while! later on the timeout 1832 * routine would detect IOPBs that were marked "running" but their 1833 * "done" bit was set. rather than dealing directly with this 1834 * problem, it is just easier to look at all running IOPB's for the 1835 * done bit. 1836 */ 1837 if (xdc->xdc_csr & XDC_REMIOPB) { 1838 xdc->xdc_csr = XDC_CLRRIO; 1839 } 1840 1841 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1842 iorq = &xdcsc->reqs[rqno]; 1843 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1844 continue; /* free, or done */ 1845 iopb = &xdcsc->iopbase[rqno]; 1846 if (iopb->done == 0) 1847 continue; /* not done yet */ 1848 1849 #ifdef XDC_DEBUG 1850 { 1851 u_char *rio = (u_char *) iopb; 1852 int sz = sizeof(struct xd_iopb), lcv; 1853 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 1854 for (lcv = 0; lcv < sz; lcv++) 1855 printf(" %02x", rio[lcv]); 1856 printf("]\n"); 1857 } 1858 #endif /* XDC_DEBUG */ 1859 1860 xdcsc->nrun--; 1861 1862 comm = iopb->comm; 1863 errs = iopb->errs; 1864 1865 if (errs) 1866 iorq->errno = iopb->errno; 1867 else 1868 iorq->errno = 0; 1869 1870 /* handle non-fatal errors */ 1871 1872 if (errs && 1873 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 1874 continue; /* AOK: we resubmitted it */ 1875 1876 1877 /* this iorq is now done (hasn't been restarted or anything) */ 1878 1879 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 1880 xdc_perror(iorq, iopb, 0); 1881 1882 /* now, if read/write check to make sure we got all the data 1883 * we needed. (this may not be the case if we got an error in 1884 * the middle of a multisector request). */ 1885 1886 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 1887 (comm == XDCMD_RD || comm == XDCMD_WR)) { 1888 /* we just successfully processed a bad144 sector 1889 * note: if we are in bad 144 mode, the pointers have 1890 * been advanced already (see above) and are pointing 1891 * at the bad144 sector. to exit bad144 mode, we 1892 * must advance the pointers 1 sector and issue a new 1893 * request if there are still sectors left to process 1894 * 1895 */ 1896 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 1897 1898 /* exit b144 mode */ 1899 iorq->mode = iorq->mode & (~XD_MODE_B144); 1900 1901 if (iorq->sectcnt) { /* more to go! */ 1902 iorq->lasterror = iorq->errno = iopb->errno = 0; 1903 iopb->errs = iopb->done = 0; 1904 iorq->tries = 0; 1905 iopb->sectcnt = iorq->sectcnt; 1906 iopb->cylno = iorq->blockno / 1907 iorq->xd->sectpercyl; 1908 iopb->headno = 1909 (iorq->blockno / iorq->xd->nhead) % 1910 iorq->xd->nhead; 1911 iopb->sectno = iorq->blockno % XDFM_BPS; 1912 iopb->daddr = 1913 dvma_kvtopa(iorq->dbuf, xdcsc->bustype); 1914 XDC_HWAIT(xdcsc, rqno); 1915 xdc_start(xdcsc, 1); /* resubmit */ 1916 continue; 1917 } 1918 } 1919 /* final cleanup, totally done with this request */ 1920 1921 switch (XD_STATE(iorq->mode)) { 1922 case XD_SUB_NORM: 1923 bp = iorq->buf; 1924 if (errs) { 1925 bp->b_error = EIO; 1926 bp->b_flags |= B_ERROR; 1927 bp->b_resid = iorq->sectcnt * XDFM_BPS; 1928 } else { 1929 bp->b_resid = 0; /* done */ 1930 } 1931 /* Sun3: map/unmap regardless of B_PHYS */ 1932 dvma_mapout(iorq->dbufbase, 1933 iorq->buf->b_bcount); 1934 disk_unbusy(&iorq->xd->sc_dk, 1935 (bp->b_bcount - bp->b_resid)); 1936 XDC_FREE(xdcsc, rqno); 1937 biodone(bp); 1938 break; 1939 case XD_SUB_WAIT: 1940 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1941 xdcsc->ndone++; 1942 wakeup(iorq); 1943 break; 1944 case XD_SUB_POLL: 1945 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1946 xdcsc->ndone++; 1947 break; 1948 } 1949 } 1950 1951 return (XD_ERR_AOK); 1952 } 1953 1954 /* 1955 * xdc_perror: print error. 1956 * - if still_trying is true: we got an error, retried and got a 1957 * different error. in that case lasterror is the old error, 1958 * and errno is the new one. 1959 * - if still_trying is not true, then if we ever had an error it 1960 * is in lasterror. also, if iorq->errno == 0, then we recovered 1961 * from that error (otherwise iorq->errno == iorq->lasterror). 1962 */ 1963 void 1964 xdc_perror(iorq, iopb, still_trying) 1965 struct xd_iorq *iorq; 1966 struct xd_iopb *iopb; 1967 int still_trying; 1968 1969 { 1970 1971 int error = iorq->lasterror; 1972 1973 printf("%s", (iorq->xd) ? 1974 iorq->xd->sc_dev.dv_xname : 1975 iorq->xdc->sc_dev.dv_xname); 1976 if (iorq->buf) 1977 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1978 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 1979 printf("%s %d/%d/%d: ", 1980 (iopb->comm == XDCMD_RD) ? "read" : "write", 1981 iopb->cylno, iopb->headno, iopb->sectno); 1982 printf("%s", xdc_e2str(error)); 1983 1984 if (still_trying) 1985 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 1986 else 1987 if (iorq->errno == 0) 1988 printf(" [recovered in %d tries]", iorq->tries); 1989 1990 printf("\n"); 1991 } 1992 1993 /* 1994 * xdc_error: non-fatal error encountered... recover. 1995 * return AOK if resubmitted, return FAIL if this iopb is done 1996 */ 1997 int 1998 xdc_error(xdcsc, iorq, iopb, rqno, comm) 1999 struct xdc_softc *xdcsc; 2000 struct xd_iorq *iorq; 2001 struct xd_iopb *iopb; 2002 int rqno, comm; 2003 2004 { 2005 int errno = iorq->errno; 2006 int erract = errno & XD_ERA_MASK; 2007 int oldmode, advance, i; 2008 2009 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2010 oldmode = iorq->mode; 2011 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2012 xdcsc->ndone++; 2013 /* make xdc_start ignore us */ 2014 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2015 iorq->mode = oldmode; 2016 xdcsc->ndone--; 2017 } 2018 /* check for read/write to a sector in bad144 table if bad: redirect 2019 * request to bad144 area */ 2020 2021 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2022 (iorq->mode & XD_MODE_B144) == 0) { 2023 advance = iorq->sectcnt - iopb->sectcnt; 2024 XDC_ADVANCE(iorq, advance); 2025 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2026 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2027 iorq->blockno % iorq->xd->nsect)) != -1) { 2028 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2029 * redirect */ 2030 iopb->errno = iopb->done = iopb->errs = 0; 2031 iopb->sectcnt = 1; 2032 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2033 /* second to last acyl */ 2034 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2035 * standard */ 2036 iopb->headno = i / iorq->xd->nhead; 2037 iopb->sectno = i % iorq->xd->nhead; 2038 XDC_HWAIT(xdcsc, rqno); 2039 xdc_start(xdcsc, 1); /* resubmit */ 2040 return (XD_ERR_AOK); /* recovered! */ 2041 } 2042 } 2043 2044 /* 2045 * it isn't a bad144 sector, must be real error! see if we can retry 2046 * it? 2047 */ 2048 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2049 xdc_perror(iorq, iopb, 1); /* inform of error state 2050 * change */ 2051 iorq->lasterror = errno; 2052 2053 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2054 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2055 iorq->tries++; 2056 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2057 XDC_HWAIT(xdcsc, rqno); 2058 xdc_start(xdcsc, 1); /* restart */ 2059 return (XD_ERR_AOK); /* recovered! */ 2060 } 2061 2062 /* failed to recover from this error */ 2063 return (XD_ERR_FAIL); 2064 } 2065 2066 /* 2067 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2068 */ 2069 void 2070 xdc_tick(arg) 2071 void *arg; 2072 2073 { 2074 struct xdc_softc *xdcsc = arg; 2075 int lcv, s, reset = 0; 2076 #ifdef XDC_DIAG 2077 int wait, run, free, done, whd = 0; 2078 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2079 s = splbio(); 2080 wait = xdcsc->nwait; 2081 run = xdcsc->nrun; 2082 free = xdcsc->nfree; 2083 done = xdcsc->ndone; 2084 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2085 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2086 splx(s); 2087 if (wait + run + free + done != XDC_MAXIOPB) { 2088 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2089 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2090 memset(mark, 0, sizeof(mark)); 2091 printf("FREE: "); 2092 for (lcv = free; lcv > 0; lcv--) { 2093 printf("%d ", fqc[lcv - 1]); 2094 mark[fqc[lcv - 1]] = 1; 2095 } 2096 printf("\nWAIT: "); 2097 lcv = wait; 2098 while (lcv > 0) { 2099 printf("%d ", wqc[whd]); 2100 mark[wqc[whd]] = 1; 2101 whd = (whd + 1) % XDC_MAXIOPB; 2102 lcv--; 2103 } 2104 printf("\n"); 2105 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2106 if (mark[lcv] == 0) 2107 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2108 lcv, xdcsc->reqs[lcv].mode, 2109 xdcsc->iopbase[lcv].done, 2110 xdcsc->iopbase[lcv].errs, 2111 xdcsc->iopbase[lcv].errno, 2112 xdcsc->reqs[lcv].ttl, 2113 xdcsc->reqs[lcv].buf); 2114 } 2115 } else 2116 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2117 printf("%s: diag: lots of done jobs (%d)\n", 2118 xdcsc->sc_dev.dv_xname, done); 2119 2120 #endif 2121 #ifdef XDC_DEBUG 2122 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2123 xdcsc->sc_dev.dv_xname, 2124 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2125 xdcsc->ndone); 2126 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2127 if (xdcsc->reqs[lcv].mode) 2128 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2129 lcv, 2130 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2131 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2132 } 2133 #endif 2134 2135 /* reduce ttl for each request if one goes to zero, reset xdc */ 2136 s = splbio(); 2137 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2138 if (xdcsc->reqs[lcv].mode == 0 || 2139 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2140 continue; 2141 xdcsc->reqs[lcv].ttl--; 2142 if (xdcsc->reqs[lcv].ttl == 0) 2143 reset = 1; 2144 } 2145 if (reset) { 2146 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2147 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2148 } 2149 splx(s); 2150 2151 /* until next time */ 2152 2153 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2154 } 2155 2156 /* 2157 * xdc_ioctlcmd: this function provides a user level interface to the 2158 * controller via ioctl. this allows "format" programs to be written 2159 * in user code, and is also useful for some debugging. we return 2160 * an error code. called at user priority. 2161 */ 2162 int 2163 xdc_ioctlcmd(xd, dev, xio) 2164 struct xd_softc *xd; 2165 dev_t dev; 2166 struct xd_iocmd *xio; 2167 2168 { 2169 int s, err, rqno; 2170 caddr_t dvmabuf = NULL; 2171 struct xdc_softc *xdcsc; 2172 2173 /* check sanity of requested command */ 2174 2175 switch (xio->cmd) { 2176 2177 case XDCMD_NOP: /* no op: everything should be zero */ 2178 if (xio->subfn || xio->dptr || xio->dlen || 2179 xio->block || xio->sectcnt) 2180 return (EINVAL); 2181 break; 2182 2183 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2184 case XDCMD_WR: 2185 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2186 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2187 return (EINVAL); 2188 break; 2189 2190 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2191 return (EINVAL); 2192 2193 case XDCMD_WRP: /* write parameters */ 2194 return (EINVAL);/* not useful, except maybe drive 2195 * parameters... but drive parameters should 2196 * go via disklabel changes */ 2197 2198 case XDCMD_RDP: /* read parameters */ 2199 if (xio->subfn != XDFUN_DRV || 2200 xio->dlen || xio->block || xio->dptr) 2201 return (EINVAL); /* allow read drive params to 2202 * get hw_spt */ 2203 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2204 return (0); 2205 break; 2206 2207 case XDCMD_XRD: /* extended read/write */ 2208 case XDCMD_XWR: 2209 2210 switch (xio->subfn) { 2211 2212 case XDFUN_THD:/* track headers */ 2213 if (xio->sectcnt != xd->hw_spt || 2214 (xio->block % xd->nsect) != 0 || 2215 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2216 xio->dptr == NULL) 2217 return (EINVAL); 2218 xio->sectcnt = 0; 2219 break; 2220 2221 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2222 if (xio->cmd == XDCMD_XRD) 2223 return (EINVAL); /* no XDFUN_VFY */ 2224 if (xio->sectcnt || xio->dlen || 2225 (xio->block % xd->nsect) != 0 || xio->dptr) 2226 return (EINVAL); 2227 break; 2228 2229 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2230 return (EINVAL); /* not yet */ 2231 2232 case XDFUN_DM: /* defect map */ 2233 case XDFUN_DMX:/* defect map (alternate location) */ 2234 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2235 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2236 return (EINVAL); 2237 break; 2238 2239 default: 2240 return (EINVAL); 2241 } 2242 break; 2243 2244 case XDCMD_TST: /* diagnostics */ 2245 return (EINVAL); 2246 2247 default: 2248 return (EINVAL);/* ??? */ 2249 } 2250 2251 /* create DVMA buffer for request if needed */ 2252 2253 if (xio->dlen) { 2254 dvmabuf = dvma_malloc(xio->dlen); 2255 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2256 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2257 if (err) { 2258 dvma_free(dvmabuf, xio->dlen); 2259 return (err); 2260 } 2261 } 2262 } 2263 /* do it! */ 2264 2265 err = 0; 2266 xdcsc = xd->parent; 2267 s = splbio(); 2268 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2269 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2270 if (rqno == XD_ERR_FAIL) { 2271 err = EIO; 2272 goto done; 2273 } 2274 xio->errno = xdcsc->reqs[rqno].errno; 2275 xio->tries = xdcsc->reqs[rqno].tries; 2276 XDC_DONE(xdcsc, rqno, err); 2277 2278 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2279 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2280 2281 done: 2282 splx(s); 2283 if (dvmabuf) 2284 dvma_free(dvmabuf, xio->dlen); 2285 return (err); 2286 } 2287 2288 /* 2289 * xdc_e2str: convert error code number into an error string 2290 */ 2291 char * 2292 xdc_e2str(no) 2293 int no; 2294 { 2295 switch (no) { 2296 case XD_ERR_FAIL: 2297 return ("Software fatal error"); 2298 case XD_ERR_AOK: 2299 return ("Successful completion"); 2300 case XD_ERR_ICYL: 2301 return ("Illegal cylinder address"); 2302 case XD_ERR_IHD: 2303 return ("Illegal head address"); 2304 case XD_ERR_ISEC: 2305 return ("Illgal sector address"); 2306 case XD_ERR_CZER: 2307 return ("Count zero"); 2308 case XD_ERR_UIMP: 2309 return ("Unimplemented command"); 2310 case XD_ERR_IF1: 2311 return ("Illegal field length 1"); 2312 case XD_ERR_IF2: 2313 return ("Illegal field length 2"); 2314 case XD_ERR_IF3: 2315 return ("Illegal field length 3"); 2316 case XD_ERR_IF4: 2317 return ("Illegal field length 4"); 2318 case XD_ERR_IF5: 2319 return ("Illegal field length 5"); 2320 case XD_ERR_IF6: 2321 return ("Illegal field length 6"); 2322 case XD_ERR_IF7: 2323 return ("Illegal field length 7"); 2324 case XD_ERR_ISG: 2325 return ("Illegal scatter/gather length"); 2326 case XD_ERR_ISPT: 2327 return ("Not enough sectors per track"); 2328 case XD_ERR_ALGN: 2329 return ("Next IOPB address alignment error"); 2330 case XD_ERR_SGAL: 2331 return ("Scatter/gather address alignment error"); 2332 case XD_ERR_SGEC: 2333 return ("Scatter/gather with auto-ECC"); 2334 case XD_ERR_SECC: 2335 return ("Soft ECC corrected"); 2336 case XD_ERR_SIGN: 2337 return ("ECC ignored"); 2338 case XD_ERR_ASEK: 2339 return ("Auto-seek retry recovered"); 2340 case XD_ERR_RTRY: 2341 return ("Soft retry recovered"); 2342 case XD_ERR_HECC: 2343 return ("Hard data ECC"); 2344 case XD_ERR_NHDR: 2345 return ("Header not found"); 2346 case XD_ERR_NRDY: 2347 return ("Drive not ready"); 2348 case XD_ERR_TOUT: 2349 return ("Operation timeout"); 2350 case XD_ERR_VTIM: 2351 return ("VMEDMA timeout"); 2352 case XD_ERR_DSEQ: 2353 return ("Disk sequencer error"); 2354 case XD_ERR_HDEC: 2355 return ("Header ECC error"); 2356 case XD_ERR_RVFY: 2357 return ("Read verify"); 2358 case XD_ERR_VFER: 2359 return ("Fatail VMEDMA error"); 2360 case XD_ERR_VBUS: 2361 return ("VMEbus error"); 2362 case XD_ERR_DFLT: 2363 return ("Drive faulted"); 2364 case XD_ERR_HECY: 2365 return ("Header error/cyliner"); 2366 case XD_ERR_HEHD: 2367 return ("Header error/head"); 2368 case XD_ERR_NOCY: 2369 return ("Drive not on-cylinder"); 2370 case XD_ERR_SEEK: 2371 return ("Seek error"); 2372 case XD_ERR_ILSS: 2373 return ("Illegal sector size"); 2374 case XD_ERR_SEC: 2375 return ("Soft ECC"); 2376 case XD_ERR_WPER: 2377 return ("Write-protect error"); 2378 case XD_ERR_IRAM: 2379 return ("IRAM self test failure"); 2380 case XD_ERR_MT3: 2381 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2382 case XD_ERR_MT4: 2383 return ("Maintenance test 4 failure (header shift reg)"); 2384 case XD_ERR_MT5: 2385 return ("Maintenance test 5 failure (VMEDMA regs)"); 2386 case XD_ERR_MT6: 2387 return ("Maintenance test 6 failure (REGCEL chip)"); 2388 case XD_ERR_MT7: 2389 return ("Maintenance test 7 failure (buffer parity)"); 2390 case XD_ERR_MT8: 2391 return ("Maintenance test 8 failure (disk FIFO)"); 2392 case XD_ERR_IOCK: 2393 return ("IOPB checksum miscompare"); 2394 case XD_ERR_IODM: 2395 return ("IOPB DMA fatal"); 2396 case XD_ERR_IOAL: 2397 return ("IOPB address alignment error"); 2398 case XD_ERR_FIRM: 2399 return ("Firmware error"); 2400 case XD_ERR_MMOD: 2401 return ("Illegal maintenance mode test number"); 2402 case XD_ERR_ACFL: 2403 return ("ACFAIL asserted"); 2404 default: 2405 return ("Unknown error"); 2406 } 2407 } 2408
Indexes created Thu Sep 25 06:09:39 GMT 2025