1 /* $NetBSD: xd.c,v 1.34 2001/09/05 14:03:49 tsutsui 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@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 /* bdevsw, cdevsw */ 242 bdev_decl(xd); 243 cdev_decl(xd); 244 245 /* autoconf */ 246 static int xdcmatch __P((struct device *, struct cfdata *, void *)); 247 static void xdcattach __P((struct device *, struct device *, void *)); 248 static int xdc_print __P((void *, const char *name)); 249 250 static int xdmatch __P((struct device *, struct cfdata *, void *)); 251 static void xdattach __P((struct device *, struct device *, void *)); 252 static void xd_init __P((struct xd_softc *)); 253 254 static void xddummystrat __P((struct buf *)); 255 int xdgetdisklabel __P((struct xd_softc *, void *)); 256 257 /* 258 * cfattach's: device driver interface to autoconfig 259 */ 260 261 struct cfattach xdc_ca = { 262 sizeof(struct xdc_softc), xdcmatch, xdcattach 263 }; 264 265 struct cfattach xd_ca = { 266 sizeof(struct xd_softc), xdmatch, xdattach 267 }; 268 269 extern struct cfdriver xd_cd; 270 271 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 272 int driveno; /* unit number */ 273 char *dvmabuf; /* scratch buffer for reading disk label */ 274 int fullmode; /* submit mode */ 275 int booting; /* are we booting or not? */ 276 }; 277 278 /* 279 * dkdriver 280 */ 281 282 struct dkdriver xddkdriver = {xdstrategy}; 283 284 /* 285 * start: disk label fix code (XXX) 286 */ 287 288 static void *xd_labeldata; 289 290 static void 291 xddummystrat(bp) 292 struct buf *bp; 293 { 294 if (bp->b_bcount != XDFM_BPS) 295 panic("xddummystrat"); 296 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 297 bp->b_flags |= B_DONE; 298 bp->b_flags &= ~B_BUSY; 299 } 300 301 int 302 xdgetdisklabel(xd, b) 303 struct xd_softc *xd; 304 void *b; 305 { 306 char *err; 307 struct sun_disklabel *sdl; 308 309 /* We already have the label data in `b'; setup for dummy strategy */ 310 xd_labeldata = b; 311 312 /* Required parameter for readdisklabel() */ 313 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 314 315 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 316 xddummystrat, 317 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 318 if (err) { 319 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 320 return(XD_ERR_FAIL); 321 } 322 323 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 324 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 325 if (sdl->sl_magic == SUN_DKMAGIC) 326 xd->pcyl = sdl->sl_pcyl; 327 else { 328 printf("%s: WARNING: no `pcyl' in disk label.\n", 329 xd->sc_dev.dv_xname); 330 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 331 xd->sc_dk.dk_label->d_acylinders; 332 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 333 xd->sc_dev.dv_xname, xd->pcyl); 334 } 335 336 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 337 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 338 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 339 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 340 xd->sectpercyl = xd->nhead * xd->nsect; 341 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 342 * sun->bsd */ 343 return(XD_ERR_AOK); 344 } 345 346 /* 347 * end: disk label fix code (XXX) 348 */ 349 350 /* 351 * a u t o c o n f i g f u n c t i o n s 352 */ 353 354 /* 355 * xdcmatch: determine if xdc is present or not. we do a 356 * soft reset to detect the xdc. 357 */ 358 359 int xdcmatch(parent, cf, aux) 360 struct device *parent; 361 struct cfdata *cf; 362 void *aux; 363 { 364 struct confargs *ca = aux; 365 366 /* No default VME address. */ 367 if (ca->ca_paddr == -1) 368 return (0); 369 370 /* Make sure something is there... */ 371 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 11, 1) == -1) 372 return (0); 373 374 /* Default interrupt priority. */ 375 if (ca->ca_intpri == -1) 376 ca->ca_intpri = 2; 377 378 return (1); 379 } 380 381 /* 382 * xdcattach: attach controller 383 */ 384 void 385 xdcattach(parent, self, aux) 386 struct device *parent, *self; 387 void *aux; 388 { 389 struct xdc_softc *xdc = (void *) self; 390 struct confargs *ca = aux; 391 struct xdc_attach_args xa; 392 int lcv, rqno, err; 393 struct xd_iopb_ctrl *ctl; 394 395 /* get addressing and intr level stuff from autoconfig and load it 396 * into our xdc_softc. */ 397 398 xdc->xdc = (struct xdc *) 399 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xdc)); 400 xdc->bustype = ca->ca_bustype; 401 xdc->ipl = ca->ca_intpri; 402 xdc->vector = ca->ca_intvec; 403 404 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 405 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 406 407 /* allocate and zero buffers 408 * 409 * note: we simplify the code by allocating the max number of iopbs and 410 * iorq's up front. thus, we avoid linked lists and the costs 411 * associated with them in exchange for wasting a little memory. */ 412 413 xdc->iopbase = (struct xd_iopb *) 414 dvma_malloc(XDC_MAXIOPB * sizeof(struct xd_iopb)); /* KVA */ 415 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 416 xdc->dvmaiopb = (struct xd_iopb *) 417 dvma_kvtopa(xdc->iopbase, xdc->bustype); 418 xdc->reqs = (struct xd_iorq *) 419 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), M_DEVBUF, M_NOWAIT); 420 if (xdc->reqs == NULL) 421 panic("xdc malloc"); 422 memset(xdc->reqs, 0, XDC_MAXIOPB * sizeof(struct xd_iorq)); 423 424 /* init free list, iorq to iopb pointers, and non-zero fields in the 425 * iopb which never change. */ 426 427 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 428 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 429 xdc->freereq[lcv] = lcv; 430 xdc->iopbase[lcv].fixd = 1; /* always the same */ 431 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 432 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 433 } 434 xdc->nfree = XDC_MAXIOPB; 435 xdc->nrun = 0; 436 xdc->waithead = xdc->waitend = xdc->nwait = 0; 437 xdc->ndone = 0; 438 439 /* init queue of waiting bufs */ 440 441 BUFQ_INIT(&xdc->sc_wq); 442 callout_init(&xdc->sc_tick_ch); 443 444 /* 445 * section 7 of the manual tells us how to init the controller: 446 * - read controller parameters (6/0) 447 * - write controller parameters (5/0) 448 */ 449 450 /* read controller parameters and insure we have a 753/7053 */ 451 452 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 453 if (rqno == XD_ERR_FAIL) { 454 printf(": couldn't read controller params\n"); 455 return; /* shouldn't ever happen */ 456 } 457 ctl = (struct xd_iopb_ctrl *) & xdc->iopbase[rqno]; 458 if (ctl->ctype != XDCT_753) { 459 if (xdc->reqs[rqno].errno) 460 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 461 printf(": doesn't identify as a 753/7053\n"); 462 XDC_DONE(xdc, rqno, err); 463 return; 464 } 465 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 466 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 467 XDC_DONE(xdc, rqno, err); 468 469 /* now write controller parameters (xdc_cmd sets all params for us) */ 470 471 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 472 XDC_DONE(xdc, rqno, err); 473 if (err) { 474 printf("%s: controller config error: %s\n", 475 xdc->sc_dev.dv_xname, xdc_e2str(err)); 476 return; 477 } 478 479 /* link in interrupt with higher level software */ 480 isr_add_vectored(xdcintr, (void *)xdc, 481 ca->ca_intpri, ca->ca_intvec); 482 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 483 xdc->sc_dev.dv_xname, "intr"); 484 485 /* now we must look for disks using autoconfig */ 486 xa.booting = 1; 487 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 488 (void) config_found(self, (void *) &xa, xdc_print); 489 490 /* start the watchdog clock */ 491 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 492 } 493 494 int 495 xdc_print(aux, name) 496 void *aux; 497 const char *name; 498 { 499 struct xdc_attach_args *xa = aux; 500 501 if (name != NULL) 502 printf("%s: ", name); 503 504 if (xa->driveno != -1) 505 printf(" drive %d", xa->driveno); 506 507 return UNCONF; 508 } 509 510 /* 511 * xdmatch: probe for disk. 512 * 513 * note: we almost always say disk is present. this allows us to 514 * spin up and configure a disk after the system is booted (we can 515 * call xdattach!). Also, wire down the relationship between the 516 * xd* and xdc* devices, to simplify boot device identification. 517 */ 518 int 519 xdmatch(parent, cf, aux) 520 struct device *parent; 521 struct cfdata *cf; 522 void *aux; 523 { 524 struct xdc_attach_args *xa = aux; 525 int xd_unit; 526 527 /* Match only on the "wired-down" controller+disk. */ 528 xd_unit = parent->dv_unit * 2 + xa->driveno; 529 if (cf->cf_unit != xd_unit) 530 return (0); 531 532 return (1); 533 } 534 535 /* 536 * xdattach: attach a disk. 537 */ 538 void 539 xdattach(parent, self, aux) 540 struct device *parent, *self; 541 void *aux; 542 543 { 544 struct xd_softc *xd = (void *) self; 545 struct xdc_softc *xdc = (void *) parent; 546 struct xdc_attach_args *xa = aux; 547 548 printf("\n"); 549 550 /* 551 * Always re-initialize the disk structure. We want statistics 552 * to start with a clean slate. 553 */ 554 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 555 xd->sc_dk.dk_driver = &xddkdriver; 556 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 557 558 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 559 xd->flags = 0; 560 xd->parent = xdc; 561 562 xd->xd_drive = xa->driveno; 563 xdc->sc_drives[xa->driveno] = xd; 564 565 /* Do init work common to attach and open. */ 566 xd_init(xd); 567 } 568 569 /* 570 * end of autoconfig functions 571 */ 572 573 /* 574 * Initialize a disk. This can be called from both autoconf and 575 * also from xdopen/xdstrategy. 576 */ 577 static void 578 xd_init(xd) 579 struct xd_softc *xd; 580 { 581 struct xdc_softc *xdc; 582 struct dkbad *dkb; 583 struct xd_iopb_drive *driopb; 584 void *dvmabuf; 585 int rqno, err, spt, mb, blk, lcv, fullmode, newstate; 586 587 xdc = xd->parent; 588 xd->state = XD_DRIVE_ATTACHING; 589 newstate = XD_DRIVE_UNKNOWN; 590 fullmode = (cold) ? XD_SUB_POLL : XD_SUB_WAIT; 591 dvmabuf = dvma_malloc(XDFM_BPS); 592 593 /* first try and reset the drive */ 594 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fullmode); 595 XDC_DONE(xdc, rqno, err); 596 if (err == XD_ERR_NRDY) { 597 printf("%s: drive %d: off-line\n", 598 xd->sc_dev.dv_xname, xd->xd_drive); 599 goto done; 600 } 601 if (err) { 602 printf("%s: ERROR 0x%02x (%s)\n", 603 xd->sc_dev.dv_xname, err, xdc_e2str(err)); 604 goto done; 605 } 606 printf("%s: drive %d ready\n", 607 xd->sc_dev.dv_xname, xd->xd_drive); 608 609 /* now set format parameters */ 610 611 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 612 0, 0, 0, fullmode); 613 XDC_DONE(xdc, rqno, err); 614 if (err) { 615 printf("%s: write format parameters failed: %s\n", 616 xd->sc_dev.dv_xname, xdc_e2str(err)); 617 goto done; 618 } 619 620 /* get drive parameters */ 621 spt = 0; 622 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 623 0, 0, 0, fullmode); 624 if (rqno != XD_ERR_FAIL) { 625 driopb = (struct xd_iopb_drive *) & xdc->iopbase[rqno]; 626 spt = driopb->sectpertrk; 627 } 628 XDC_DONE(xdc, rqno, err); 629 if (err) { 630 printf("%s: read drive parameters failed: %s\n", 631 xd->sc_dev.dv_xname, xdc_e2str(err)); 632 goto done; 633 } 634 635 /* 636 * now set drive parameters (to semi-bogus values) so we can read the 637 * disk label. 638 */ 639 xd->pcyl = xd->ncyl = 1; 640 xd->acyl = 0; 641 xd->nhead = 1; 642 xd->nsect = 1; 643 xd->sectpercyl = 1; 644 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 645 xd->dkb.bt_bad[lcv].bt_cyl = 646 xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 647 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 648 0, 0, 0, fullmode); 649 XDC_DONE(xdc, rqno, err); 650 if (err) { 651 printf("%s: write drive parameters failed: %s\n", 652 xd->sc_dev.dv_xname, xdc_e2str(err)); 653 goto done; 654 } 655 656 /* read disk label */ 657 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 658 0, 1, dvmabuf, fullmode); 659 XDC_DONE(xdc, rqno, err); 660 if (err) { 661 printf("%s: reading disk label failed: %s\n", 662 xd->sc_dev.dv_xname, xdc_e2str(err)); 663 goto done; 664 } 665 newstate = XD_DRIVE_NOLABEL; 666 667 xd->hw_spt = spt; 668 /* Attach the disk: must be before getdisklabel to malloc label */ 669 disk_attach(&xd->sc_dk); 670 671 if (xdgetdisklabel(xd, dvmabuf) != XD_ERR_AOK) 672 goto done; 673 674 /* inform the user of what is up */ 675 printf("%s: <%s>, pcyl %d, hw_spt %d\n", 676 xd->sc_dev.dv_xname, 677 (char *)dvmabuf, xd->pcyl, spt); 678 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 679 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 680 xd->sc_dev.dv_xname, mb, 681 xd->ncyl, xd->nhead, xd->nsect); 682 683 /* now set the real drive parameters! */ 684 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 685 0, 0, 0, fullmode); 686 XDC_DONE(xdc, rqno, err); 687 if (err) { 688 printf("%s: write real drive parameters failed: %s\n", 689 xd->sc_dev.dv_xname, xdc_e2str(err)); 690 goto done; 691 } 692 newstate = XD_DRIVE_ONLINE; 693 694 /* 695 * read bad144 table. this table resides on the first sector of the 696 * last track of the disk (i.e. second cyl of "acyl" area). 697 */ 698 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 699 (xd->nhead - 1) * xd->nsect; /* last head */ 700 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 701 blk, 1, dvmabuf, fullmode); 702 XDC_DONE(xdc, rqno, err); 703 if (err) { 704 printf("%s: reading bad144 failed: %s\n", 705 xd->sc_dev.dv_xname, xdc_e2str(err)); 706 goto done; 707 } 708 709 /* check dkbad for sanity */ 710 dkb = (struct dkbad *) dvmabuf; 711 for (lcv = 0; lcv < 126; lcv++) { 712 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 713 dkb->bt_bad[lcv].bt_cyl == 0) && 714 dkb->bt_bad[lcv].bt_trksec == 0xffff) 715 continue; /* blank */ 716 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 717 break; 718 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 719 break; 720 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 721 break; 722 } 723 if (lcv != 126) { 724 printf("%s: warning: invalid bad144 sector!\n", 725 xd->sc_dev.dv_xname); 726 } else { 727 memcpy(&xd->dkb, dvmabuf, XDFM_BPS); 728 } 729 730 done: 731 xd->state = newstate; 732 dvma_free(dvmabuf, XDFM_BPS); 733 } 734 735 /* 736 * { b , c } d e v s w f u n c t i o n s 737 */ 738 739 /* 740 * xdclose: close device 741 */ 742 int 743 xdclose(dev, flag, fmt, p) 744 dev_t dev; 745 int flag, fmt; 746 struct proc *p; 747 { 748 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 749 int part = DISKPART(dev); 750 751 /* clear mask bits */ 752 753 switch (fmt) { 754 case S_IFCHR: 755 xd->sc_dk.dk_copenmask &= ~(1 << part); 756 break; 757 case S_IFBLK: 758 xd->sc_dk.dk_bopenmask &= ~(1 << part); 759 break; 760 } 761 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 762 763 return 0; 764 } 765 766 /* 767 * xddump: crash dump system 768 */ 769 int 770 xddump(dev, blkno, va, sz) 771 dev_t dev; 772 daddr_t blkno; 773 caddr_t va; 774 size_t sz; 775 { 776 int unit, part; 777 struct xd_softc *xd; 778 779 unit = DISKUNIT(dev); 780 if (unit >= xd_cd.cd_ndevs) 781 return ENXIO; 782 part = DISKPART(dev); 783 784 xd = xd_cd.cd_devs[unit]; 785 786 printf("%s%c: crash dump not supported (yet)\n", 787 xd->sc_dev.dv_xname, 'a' + part); 788 789 return ENXIO; 790 791 /* outline: globals: "dumplo" == sector number of partition to start 792 * dump at (convert to physical sector with partition table) 793 * "dumpsize" == size of dump in clicks "physmem" == size of physical 794 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 795 * physmem) 796 * 797 * dump a copy of physical memory to the dump device starting at sector 798 * "dumplo" in the swap partition (make sure > 0). map in pages as 799 * we go. use polled I/O. 800 * 801 * XXX how to handle NON_CONTIG? 802 */ 803 } 804 805 /* 806 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 807 */ 808 int 809 xdioctl(dev, command, addr, flag, p) 810 dev_t dev; 811 u_long command; 812 caddr_t addr; 813 int flag; 814 struct proc *p; 815 816 { 817 struct xd_softc *xd; 818 struct xd_iocmd *xio; 819 int error, s, unit; 820 821 unit = DISKUNIT(dev); 822 823 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 824 return (ENXIO); 825 826 /* switch on ioctl type */ 827 828 switch (command) { 829 case DIOCSBAD: /* set bad144 info */ 830 if ((flag & FWRITE) == 0) 831 return EBADF; 832 s = splbio(); 833 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 834 splx(s); 835 return 0; 836 837 case DIOCGDINFO: /* get disk label */ 838 memcpy(addr, xd->sc_dk.dk_label, sizeof(struct disklabel)); 839 return 0; 840 841 case DIOCGPART: /* get partition info */ 842 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 843 ((struct partinfo *) addr)->part = 844 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 845 return 0; 846 847 case DIOCSDINFO: /* set disk label */ 848 if ((flag & FWRITE) == 0) 849 return EBADF; 850 error = setdisklabel(xd->sc_dk.dk_label, 851 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 852 xd->sc_dk.dk_cpulabel); 853 if (error == 0) { 854 if (xd->state == XD_DRIVE_NOLABEL) 855 xd->state = XD_DRIVE_ONLINE; 856 } 857 return error; 858 859 case DIOCWLABEL: /* change write status of disk label */ 860 if ((flag & FWRITE) == 0) 861 return EBADF; 862 if (*(int *) addr) 863 xd->flags |= XD_WLABEL; 864 else 865 xd->flags &= ~XD_WLABEL; 866 return 0; 867 868 case DIOCWDINFO: /* write disk label */ 869 if ((flag & FWRITE) == 0) 870 return EBADF; 871 error = setdisklabel(xd->sc_dk.dk_label, 872 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 873 xd->sc_dk.dk_cpulabel); 874 if (error == 0) { 875 if (xd->state == XD_DRIVE_NOLABEL) 876 xd->state = XD_DRIVE_ONLINE; 877 878 /* Simulate opening partition 0 so write succeeds. */ 879 xd->sc_dk.dk_openmask |= (1 << 0); 880 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 881 xdstrategy, xd->sc_dk.dk_label, 882 xd->sc_dk.dk_cpulabel); 883 xd->sc_dk.dk_openmask = 884 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 885 } 886 return error; 887 888 case DIOSXDCMD: 889 xio = (struct xd_iocmd *) addr; 890 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 891 return (error); 892 return (xdc_ioctlcmd(xd, dev, xio)); 893 894 default: 895 return ENOTTY; 896 } 897 } 898 899 /* 900 * xdopen: open drive 901 */ 902 int 903 xdopen(dev, flag, fmt, p) 904 dev_t dev; 905 int flag, fmt; 906 struct proc *p; 907 { 908 int err, unit, part, s; 909 struct xd_softc *xd; 910 911 /* first, could it be a valid target? */ 912 unit = DISKUNIT(dev); 913 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 914 return (ENXIO); 915 part = DISKPART(dev); 916 err = 0; 917 918 /* 919 * If some other processing is doing init, sleep. 920 */ 921 s = splbio(); 922 while (xd->state == XD_DRIVE_ATTACHING) { 923 if (tsleep(&xd->state, PRIBIO, "xdopen", 0)) { 924 err = EINTR; 925 goto done; 926 } 927 } 928 /* Do we need to init the drive? */ 929 if (xd->state == XD_DRIVE_UNKNOWN) { 930 xd_init(xd); 931 wakeup(&xd->state); 932 } 933 /* Was the init successful? */ 934 if (xd->state == XD_DRIVE_UNKNOWN) { 935 err = EIO; 936 goto done; 937 } 938 939 /* check for partition */ 940 if (part != RAW_PART && 941 (part >= xd->sc_dk.dk_label->d_npartitions || 942 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 943 err = ENXIO; 944 goto done; 945 } 946 947 /* set open masks */ 948 switch (fmt) { 949 case S_IFCHR: 950 xd->sc_dk.dk_copenmask |= (1 << part); 951 break; 952 case S_IFBLK: 953 xd->sc_dk.dk_bopenmask |= (1 << part); 954 break; 955 } 956 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 957 958 done: 959 splx(s); 960 return (err); 961 } 962 963 int 964 xdread(dev, uio, flags) 965 dev_t dev; 966 struct uio *uio; 967 int flags; 968 { 969 970 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 971 } 972 973 int 974 xdwrite(dev, uio, flags) 975 dev_t dev; 976 struct uio *uio; 977 int flags; 978 { 979 980 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 981 } 982 983 984 /* 985 * xdsize: return size of a partition for a dump 986 */ 987 int 988 xdsize(dev) 989 dev_t dev; 990 991 { 992 struct xd_softc *xdsc; 993 int unit, part, size, omask; 994 995 /* valid unit? */ 996 unit = DISKUNIT(dev); 997 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 998 return (-1); 999 1000 part = DISKPART(dev); 1001 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1002 1003 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1004 return (-1); 1005 1006 /* do it */ 1007 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1008 size = -1; /* only give valid size for swap partitions */ 1009 else 1010 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1011 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1012 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1013 return (-1); 1014 return (size); 1015 } 1016 1017 /* 1018 * xdstrategy: buffering system interface to xd. 1019 */ 1020 void 1021 xdstrategy(bp) 1022 struct buf *bp; 1023 1024 { 1025 struct xd_softc *xd; 1026 struct xdc_softc *parent; 1027 int s, unit; 1028 1029 unit = DISKUNIT(bp->b_dev); 1030 1031 /* check for live device */ 1032 1033 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1034 bp->b_blkno < 0 || 1035 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1036 bp->b_error = EINVAL; 1037 goto bad; 1038 } 1039 1040 /* There should always be an open first. */ 1041 if (xd->state == XD_DRIVE_UNKNOWN) { 1042 bp->b_error = EIO; 1043 goto bad; 1044 } 1045 1046 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1047 /* no I/O to unlabeled disks, unless raw partition */ 1048 bp->b_error = EIO; 1049 goto bad; 1050 } 1051 /* short circuit zero length request */ 1052 1053 if (bp->b_bcount == 0) 1054 goto done; 1055 1056 /* check bounds with label (disksubr.c). Determine the size of the 1057 * transfer, and make sure it is within the boundaries of the 1058 * partition. Adjust transfer if needed, and signal errors or early 1059 * completion. */ 1060 1061 if (bounds_check_with_label(bp, xd->sc_dk.dk_label, 1062 (xd->flags & XD_WLABEL) != 0) <= 0) 1063 goto done; 1064 1065 /* 1066 * now we know we have a valid buf structure that we need to do I/O 1067 * on. 1068 * 1069 * note that we don't disksort because the controller has a sorting 1070 * algorithm built into the hardware. 1071 */ 1072 1073 s = splbio(); /* protect the queues */ 1074 1075 /* first, give jobs in front of us a chance */ 1076 parent = xd->parent; 1077 while (parent->nfree > 0 && BUFQ_FIRST(&parent->sc_wq) != NULL) 1078 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1079 break; 1080 1081 /* 1082 * if there are no free iorq's, then we just queue and return. the 1083 * buffs will get picked up later by xdcintr(). 1084 */ 1085 if (parent->nfree == 0) { 1086 BUFQ_INSERT_TAIL(&parent->sc_wq, bp); 1087 splx(s); 1088 return; 1089 } 1090 1091 /* now we have free iopb's and we are at splbio... start 'em up */ 1092 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1093 return; 1094 } 1095 1096 /* done! */ 1097 1098 splx(s); 1099 return; 1100 1101 bad: /* tells upper layers we have an error */ 1102 bp->b_flags |= B_ERROR; 1103 done: /* tells upper layers we are done with this 1104 * buf */ 1105 bp->b_resid = bp->b_bcount; 1106 biodone(bp); 1107 } 1108 /* 1109 * end of {b,c}devsw functions 1110 */ 1111 1112 /* 1113 * i n t e r r u p t f u n c t i o n 1114 * 1115 * xdcintr: hardware interrupt. 1116 */ 1117 int 1118 xdcintr(v) 1119 void *v; 1120 1121 { 1122 struct xdc_softc *xdcsc = v; 1123 1124 /* kick the event counter */ 1125 xdcsc->sc_intrcnt.ev_count++; 1126 1127 /* remove as many done IOPBs as possible */ 1128 xdc_remove_iorq(xdcsc); 1129 1130 /* start any iorq's already waiting */ 1131 xdc_start(xdcsc, XDC_MAXIOPB); 1132 1133 /* fill up any remaining iorq's with queue'd buffers */ 1134 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1135 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1136 break; 1137 1138 return (1); 1139 } 1140 /* 1141 * end of interrupt function 1142 */ 1143 1144 /* 1145 * i n t e r n a l f u n c t i o n s 1146 */ 1147 1148 /* 1149 * xdc_rqinit: fill out the fields of an I/O request 1150 */ 1151 1152 inline void 1153 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1154 struct xd_iorq *rq; 1155 struct xdc_softc *xdc; 1156 struct xd_softc *xd; 1157 int md; 1158 u_long blk; 1159 int cnt; 1160 caddr_t db; 1161 struct buf *bp; 1162 { 1163 rq->xdc = xdc; 1164 rq->xd = xd; 1165 rq->ttl = XDC_MAXTTL + 10; 1166 rq->mode = md; 1167 rq->tries = rq->errno = rq->lasterror = 0; 1168 rq->blockno = blk; 1169 rq->sectcnt = cnt; 1170 rq->dbuf = rq->dbufbase = db; 1171 rq->buf = bp; 1172 } 1173 1174 /* 1175 * xdc_rqtopb: load up an IOPB based on an iorq 1176 */ 1177 void 1178 xdc_rqtopb(iorq, iopb, cmd, subfun) 1179 struct xd_iorq *iorq; 1180 struct xd_iopb *iopb; 1181 int cmd, subfun; 1182 1183 { 1184 u_long block, dp; 1185 1186 /* standard stuff */ 1187 1188 iopb->errs = iopb->done = 0; 1189 iopb->comm = cmd; 1190 iopb->errno = iopb->status = 0; 1191 iopb->subfun = subfun; 1192 if (iorq->xd) 1193 iopb->unit = iorq->xd->xd_drive; 1194 else 1195 iopb->unit = 0; 1196 1197 /* check for alternate IOPB format */ 1198 1199 if (cmd == XDCMD_WRP) { 1200 switch (subfun) { 1201 case XDFUN_CTL:{ 1202 struct xd_iopb_ctrl *ctrl = 1203 (struct xd_iopb_ctrl *) iopb; 1204 iopb->lll = 0; 1205 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1206 ? 0 1207 : iorq->xdc->ipl; 1208 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1209 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1210 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1211 XDPC_RBC | XDPC_ECC2; 1212 ctrl->throttle = XDC_THROTTLE; 1213 #ifdef sparc 1214 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 1215 ctrl->delay = XDC_DELAY_4_300; 1216 else 1217 ctrl->delay = XDC_DELAY_SPARC; 1218 #endif 1219 #ifdef sun3 1220 ctrl->delay = XDC_DELAY_SUN3; 1221 #endif 1222 break; 1223 } 1224 case XDFUN_DRV:{ 1225 struct xd_iopb_drive *drv = 1226 (struct xd_iopb_drive *)iopb; 1227 /* we assume that the disk label has the right 1228 * info */ 1229 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1230 drv->dparam_ipl = (XDC_DPARAM << 3); 1231 else 1232 drv->dparam_ipl = (XDC_DPARAM << 3) | 1233 iorq->xdc->ipl; 1234 drv->maxsect = iorq->xd->nsect - 1; 1235 drv->maxsector = drv->maxsect; 1236 /* note: maxsector != maxsect only if you are 1237 * doing cyl sparing */ 1238 drv->headoff = 0; 1239 drv->maxcyl = iorq->xd->pcyl - 1; 1240 drv->maxhead = iorq->xd->nhead - 1; 1241 break; 1242 } 1243 case XDFUN_FMT:{ 1244 struct xd_iopb_format *form = 1245 (struct xd_iopb_format *) iopb; 1246 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1247 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1248 else 1249 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1250 iorq->xdc->ipl; 1251 form->field1 = XDFM_FIELD1; 1252 form->field2 = XDFM_FIELD2; 1253 form->field3 = XDFM_FIELD3; 1254 form->field4 = XDFM_FIELD4; 1255 form->bytespersec = XDFM_BPS; 1256 form->field6 = XDFM_FIELD6; 1257 form->field7 = XDFM_FIELD7; 1258 break; 1259 } 1260 } 1261 } else { 1262 1263 /* normal IOPB case (harmless to RDP command) */ 1264 1265 iopb->lll = 0; 1266 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1267 ? 0 1268 : iorq->xdc->ipl; 1269 iopb->sectcnt = iorq->sectcnt; 1270 block = iorq->blockno; 1271 if (iorq->xd == NULL || block == 0) { 1272 iopb->sectno = iopb->headno = iopb->cylno = 0; 1273 } else { 1274 iopb->sectno = block % iorq->xd->nsect; 1275 block = block / iorq->xd->nsect; 1276 iopb->headno = block % iorq->xd->nhead; 1277 block = block / iorq->xd->nhead; 1278 iopb->cylno = block; 1279 } 1280 iopb->daddr = dp = (iorq->dbuf == NULL) ? 0 : 1281 dvma_kvtopa(iorq->dbuf, iorq->xdc->bustype); 1282 iopb->addrmod = XDC_ADDRMOD; 1283 } 1284 } 1285 1286 /* 1287 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1288 * If you've already got an IORQ, you can call submit directly (currently 1289 * there is no need to do this). NORM requests are handled separately. 1290 */ 1291 int 1292 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1293 struct xdc_softc *xdcsc; 1294 int cmd, subfn, unit, block, scnt; 1295 char *dptr; 1296 int fullmode; 1297 1298 { 1299 struct xd_iorq *iorq; 1300 struct xd_iopb *iopb; 1301 int rqno, retry; 1302 int submode = XD_STATE(fullmode); 1303 1304 /* get iorq/iopb */ 1305 switch (submode) { 1306 case XD_SUB_POLL: 1307 while (xdcsc->nfree == 0) { 1308 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1309 return (XD_ERR_FAIL); 1310 } 1311 break; 1312 case XD_SUB_WAIT: 1313 retry = 1; 1314 while (retry) { 1315 while (xdcsc->nfree == 0) { 1316 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1317 return (XD_ERR_FAIL); 1318 } 1319 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1320 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1321 return (XD_ERR_FAIL); 1322 } 1323 if (xdcsc->nfree) 1324 retry = 0; /* got it */ 1325 } 1326 break; 1327 default: 1328 return (XD_ERR_FAIL); /* illegal */ 1329 } 1330 if (xdcsc->nfree == 0) 1331 panic("xdcmd nfree"); 1332 rqno = XDC_RQALLOC(xdcsc); 1333 iorq = &xdcsc->reqs[rqno]; 1334 iopb = iorq->iopb; 1335 1336 1337 /* init iorq/iopb */ 1338 xdc_rqinit(iorq, xdcsc, 1339 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1340 fullmode, block, scnt, dptr, NULL); 1341 1342 /* load IOPB from iorq */ 1343 xdc_rqtopb(iorq, iopb, cmd, subfn); 1344 1345 /* submit it for processing */ 1346 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1347 1348 return (rqno); 1349 } 1350 1351 /* 1352 * xdc_startbuf 1353 * start a buffer running, assumes nfree > 0 1354 */ 1355 int 1356 xdc_startbuf(xdcsc, xdsc, bp) 1357 struct xdc_softc *xdcsc; 1358 struct xd_softc *xdsc; 1359 struct buf *bp; 1360 1361 { 1362 int rqno, partno; 1363 struct xd_iorq *iorq; 1364 struct xd_iopb *iopb; 1365 u_long block; 1366 caddr_t dbuf; 1367 1368 if (!xdcsc->nfree) 1369 panic("xdc_startbuf free"); 1370 rqno = XDC_RQALLOC(xdcsc); 1371 iorq = &xdcsc->reqs[rqno]; 1372 iopb = iorq->iopb; 1373 1374 /* get buf */ 1375 1376 if (bp == NULL) { 1377 bp = BUFQ_FIRST(&xdcsc->sc_wq); 1378 if (bp == NULL) 1379 panic("xdc_startbuf bp"); 1380 BUFQ_REMOVE(&xdcsc->sc_wq, bp); 1381 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1382 } 1383 partno = DISKPART(bp->b_dev); 1384 #ifdef XDC_DEBUG 1385 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1386 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1387 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1388 bp->b_bcount, bp->b_data); 1389 #endif 1390 1391 /* 1392 * load request. we have to calculate the correct block number based 1393 * on partition info. 1394 * 1395 * also, note that there are two kinds of buf structures, those with 1396 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1397 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1398 * buffer which has already been mapped into DVMA space. (Not on sun3) 1399 * However, if B_PHYS is not set, then the buffer is a normal system 1400 * buffer which does *not* live in DVMA space. In that case we call 1401 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1402 * 1403 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1404 * as mapped into DVMA space, where as the bp->b_data points to its 1405 * non-DVMA mapping. 1406 * 1407 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1408 * into dvma space, only that it was remapped into the kernel. 1409 * We ALWAYS have to remap the kernel buf into DVMA space. 1410 * (It is done inexpensively, using whole segments!) 1411 */ 1412 1413 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1414 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1415 1416 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1417 if (dbuf == NULL) { /* out of DVMA space */ 1418 printf("%s: warning: out of DVMA space\n", 1419 xdcsc->sc_dev.dv_xname); 1420 XDC_FREE(xdcsc, rqno); 1421 BUFQ_INSERT_TAIL(&xdcsc->sc_wq, bp); 1422 return (XD_ERR_FAIL); /* XXX: need some sort of 1423 * call-back scheme here? */ 1424 } 1425 1426 /* init iorq and load iopb from it */ 1427 1428 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1429 bp->b_bcount / XDFM_BPS, dbuf, bp); 1430 1431 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1432 1433 /* Instrumentation. */ 1434 disk_busy(&xdsc->sc_dk); 1435 1436 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1437 1438 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1439 return (XD_ERR_AOK); 1440 } 1441 1442 1443 /* 1444 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1445 * if ok. if it fail returns an error code. type is XD_SUB_*. 1446 * 1447 * note: caller frees iorq in all cases except NORM 1448 * 1449 * return value: 1450 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1451 * WAIT: XD_AOK (success), <error-code> (failed) 1452 * POLL: <same as WAIT> 1453 * NOQ : <same as NORM> 1454 * 1455 * there are three sources for i/o requests: 1456 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1457 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1458 * [3] open/ioctl: these are I/O requests done in the context of a process, 1459 * and the process should block until they are done. 1460 * 1461 * software state is stored in the iorq structure. each iorq has an 1462 * iopb structure. the hardware understands the iopb structure. 1463 * every command must go through an iopb. a 7053 can only handle 1464 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1465 * DVMA space at boot up time. what happens if we run out of iopb's? 1466 * for i/o type [1], the buffers are queued at the "buff" layer and 1467 * picked up later by the interrupt routine. for case [2] the 1468 * programmed i/o driver is called with a special flag that says 1469 * return when one iopb is free. for case [3] the process can sleep 1470 * on the iorq free list until some iopbs are avaliable. 1471 */ 1472 1473 1474 int 1475 xdc_submit_iorq(xdcsc, iorqno, type) 1476 struct xdc_softc *xdcsc; 1477 int iorqno; 1478 int type; 1479 1480 { 1481 u_long iopbaddr; 1482 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1483 1484 #ifdef XDC_DEBUG 1485 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1486 iorqno, type); 1487 #endif 1488 1489 /* first check and see if controller is busy */ 1490 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1491 #ifdef XDC_DEBUG 1492 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1493 #endif 1494 if (type == XD_SUB_NOQ) 1495 return (XD_ERR_FAIL); /* failed */ 1496 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1497 switch (type) { 1498 case XD_SUB_NORM: 1499 return XD_ERR_AOK; /* success */ 1500 case XD_SUB_WAIT: 1501 while (iorq->iopb->done == 0) { 1502 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1503 } 1504 return (iorq->errno); 1505 case XD_SUB_POLL: 1506 return (xdc_piodriver(xdcsc, iorqno, 0)); 1507 default: 1508 panic("xdc_submit_iorq adding"); 1509 } 1510 } 1511 #ifdef XDC_DEBUG 1512 { 1513 u_char *rio = (u_char *) iorq->iopb; 1514 int sz = sizeof(struct xd_iopb), lcv; 1515 printf("%s: aio #%d [", 1516 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1517 for (lcv = 0; lcv < sz; lcv++) 1518 printf(" %02x", rio[lcv]); 1519 printf("]\n"); 1520 } 1521 #endif /* XDC_DEBUG */ 1522 1523 /* controller not busy, start command */ 1524 iopbaddr = dvma_kvtopa(iorq->iopb, xdcsc->bustype); 1525 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1526 xdcsc->nrun++; 1527 /* command now running, wrap it up */ 1528 switch (type) { 1529 case XD_SUB_NORM: 1530 case XD_SUB_NOQ: 1531 return (XD_ERR_AOK); /* success */ 1532 case XD_SUB_WAIT: 1533 while (iorq->iopb->done == 0) { 1534 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1535 } 1536 return (iorq->errno); 1537 case XD_SUB_POLL: 1538 return (xdc_piodriver(xdcsc, iorqno, 0)); 1539 default: 1540 panic("xdc_submit_iorq wrap up"); 1541 } 1542 panic("xdc_submit_iorq"); 1543 return 0; /* not reached */ 1544 } 1545 1546 1547 /* 1548 * xdc_piodriver 1549 * 1550 * programmed i/o driver. this function takes over the computer 1551 * and drains off all i/o requests. it returns the status of the iorq 1552 * the caller is interesting in. if freeone is true, then it returns 1553 * when there is a free iorq. 1554 */ 1555 int 1556 xdc_piodriver(xdcsc, iorqno, freeone) 1557 struct xdc_softc *xdcsc; 1558 int iorqno; 1559 int freeone; 1560 1561 { 1562 int nreset = 0; 1563 int retval = 0; 1564 u_long count; 1565 struct xdc *xdc = xdcsc->xdc; 1566 #ifdef XDC_DEBUG 1567 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1568 iorqno, freeone); 1569 #endif 1570 1571 while (xdcsc->nwait || xdcsc->nrun) { 1572 #ifdef XDC_DEBUG 1573 printf("xdc_piodriver: wait=%d, run=%d\n", 1574 xdcsc->nwait, xdcsc->nrun); 1575 #endif 1576 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1577 #ifdef XDC_DEBUG 1578 printf("xdc_piodriver: done wait with count = %d\n", count); 1579 #endif 1580 /* we expect some progress soon */ 1581 if (count == 0 && nreset >= 2) { 1582 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1583 #ifdef XDC_DEBUG 1584 printf("xdc_piodriver: timeout\n"); 1585 #endif 1586 return (XD_ERR_FAIL); 1587 } 1588 if (count == 0) { 1589 if (xdc_reset(xdcsc, 0, 1590 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1591 XD_ERR_FAIL, 1592 0) == XD_ERR_FAIL) 1593 return (XD_ERR_FAIL); /* flushes all but POLL 1594 * requests, resets */ 1595 continue; 1596 } 1597 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1598 if (freeone) { 1599 if (xdcsc->nrun < XDC_MAXIOPB) { 1600 #ifdef XDC_DEBUG 1601 printf("xdc_piodriver: done: one free\n"); 1602 #endif 1603 return (XD_ERR_AOK); 1604 } 1605 continue; /* don't xdc_start */ 1606 } 1607 xdc_start(xdcsc, XDC_MAXIOPB); 1608 } 1609 1610 /* get return value */ 1611 1612 retval = xdcsc->reqs[iorqno].errno; 1613 1614 #ifdef XDC_DEBUG 1615 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1616 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1617 #endif 1618 1619 /* now that we've drained everything, start up any bufs that have 1620 * queued */ 1621 1622 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1623 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1624 break; 1625 1626 return (retval); 1627 } 1628 1629 /* 1630 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1631 * we steal iopb[0] for this, but we put it back when we are done. 1632 */ 1633 void 1634 xdc_xdreset(xdcsc, xdsc) 1635 struct xdc_softc *xdcsc; 1636 struct xd_softc *xdsc; 1637 1638 { 1639 struct xd_iopb tmpiopb; 1640 u_long addr; 1641 int del; 1642 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1643 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1644 xdcsc->iopbase->comm = XDCMD_RST; 1645 xdcsc->iopbase->unit = xdsc->xd_drive; 1646 addr = (u_long) xdcsc->dvmaiopb; 1647 XDC_GO(xdcsc->xdc, addr); /* go! */ 1648 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1649 if (del <= 0 || xdcsc->iopbase->errs) { 1650 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1651 xdc_e2str(xdcsc->iopbase->errno)); 1652 xdcsc->xdc->xdc_csr = XDC_RESET; 1653 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1654 if (del <= 0) 1655 panic("xdc_reset"); 1656 } else { 1657 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1658 } 1659 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1660 } 1661 1662 1663 /* 1664 * xdc_reset: reset everything: requests are marked as errors except 1665 * a polled request (which is resubmitted) 1666 */ 1667 int 1668 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1669 struct xdc_softc *xdcsc; 1670 int quiet, blastmode, error; 1671 struct xd_softc *xdsc; 1672 1673 { 1674 int del = 0, lcv, retval = XD_ERR_AOK; 1675 int oldfree = xdcsc->nfree; 1676 struct xd_iorq *iorq; 1677 1678 /* soft reset hardware */ 1679 1680 if (!quiet) 1681 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1682 xdcsc->xdc->xdc_csr = XDC_RESET; 1683 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1684 if (del <= 0) { 1685 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1686 retval = XD_ERR_FAIL; 1687 } 1688 if (xdsc) 1689 xdc_xdreset(xdcsc, xdsc); 1690 1691 /* fix queues based on "blast-mode" */ 1692 1693 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1694 iorq = &xdcsc->reqs[lcv]; 1695 1696 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1697 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1698 XD_STATE(iorq->mode) != XD_SUB_NORM) 1699 /* is it active? */ 1700 continue; 1701 1702 xdcsc->nrun--; /* it isn't running any more */ 1703 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1704 /* failed */ 1705 iorq->errno = error; 1706 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1707 switch (XD_STATE(iorq->mode)) { 1708 case XD_SUB_NORM: 1709 iorq->buf->b_error = EIO; 1710 iorq->buf->b_flags |= B_ERROR; 1711 iorq->buf->b_resid = 1712 iorq->sectcnt * XDFM_BPS; 1713 /* Sun3: map/unmap regardless of B_PHYS */ 1714 dvma_mapout(iorq->dbufbase, 1715 iorq->buf->b_bcount); 1716 disk_unbusy(&iorq->xd->sc_dk, 1717 (iorq->buf->b_bcount - iorq->buf->b_resid)); 1718 biodone(iorq->buf); 1719 XDC_FREE(xdcsc, lcv); /* add to free list */ 1720 break; 1721 case XD_SUB_WAIT: 1722 wakeup(iorq); 1723 case XD_SUB_POLL: 1724 xdcsc->ndone++; 1725 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1726 break; 1727 } 1728 1729 } else { 1730 1731 /* resubmit, put at front of wait queue */ 1732 XDC_HWAIT(xdcsc, lcv); 1733 } 1734 } 1735 1736 /* 1737 * now, if stuff is waiting, start it. 1738 * since we just reset it should go 1739 */ 1740 xdc_start(xdcsc, XDC_MAXIOPB); 1741 1742 /* ok, we did it */ 1743 if (oldfree == 0 && xdcsc->nfree) 1744 wakeup(&xdcsc->nfree); 1745 1746 #ifdef XDC_DIAG 1747 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1748 if (del != XDC_MAXIOPB) 1749 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1750 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1751 else 1752 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1753 printf("%s: diag: lots of done jobs (%d)\n", 1754 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1755 #endif 1756 printf("RESET DONE\n"); 1757 return (retval); 1758 } 1759 1760 /* 1761 * xdc_start: start all waiting buffers 1762 */ 1763 void 1764 xdc_start(xdcsc, maxio) 1765 struct xdc_softc *xdcsc; 1766 int maxio; 1767 1768 { 1769 int rqno; 1770 while (maxio && xdcsc->nwait && 1771 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1772 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1773 * param */ 1774 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1775 panic("xdc_start"); /* should never happen */ 1776 maxio--; 1777 } 1778 } 1779 1780 /* 1781 * xdc_remove_iorq: remove "done" IOPB's. 1782 */ 1783 int 1784 xdc_remove_iorq(xdcsc) 1785 struct xdc_softc *xdcsc; 1786 1787 { 1788 int errno, rqno, comm, errs; 1789 struct xdc *xdc = xdcsc->xdc; 1790 struct xd_iopb *iopb; 1791 struct xd_iorq *iorq; 1792 struct buf *bp; 1793 1794 if (xdc->xdc_csr & XDC_F_ERROR) { 1795 /* 1796 * FATAL ERROR: should never happen under normal use. This 1797 * error is so bad, you can't even tell which IOPB is bad, so 1798 * we dump them all. 1799 */ 1800 errno = xdc->xdc_f_err; 1801 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 1802 errno, xdc_e2str(errno)); 1803 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 1804 printf("%s: soft reset failed!\n", 1805 xdcsc->sc_dev.dv_xname); 1806 panic("xdc_remove_iorq: controller DEAD"); 1807 } 1808 return (XD_ERR_AOK); 1809 } 1810 1811 /* 1812 * get iopb that is done 1813 * 1814 * hmm... I used to read the address of the done IOPB off the VME 1815 * registers and calculate the rqno directly from that. that worked 1816 * until I started putting a load on the controller. when loaded, i 1817 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1818 * be set, even after DELAY'ing a while! later on the timeout 1819 * routine would detect IOPBs that were marked "running" but their 1820 * "done" bit was set. rather than dealing directly with this 1821 * problem, it is just easier to look at all running IOPB's for the 1822 * done bit. 1823 */ 1824 if (xdc->xdc_csr & XDC_REMIOPB) { 1825 xdc->xdc_csr = XDC_CLRRIO; 1826 } 1827 1828 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1829 iorq = &xdcsc->reqs[rqno]; 1830 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1831 continue; /* free, or done */ 1832 iopb = &xdcsc->iopbase[rqno]; 1833 if (iopb->done == 0) 1834 continue; /* not done yet */ 1835 1836 #ifdef XDC_DEBUG 1837 { 1838 u_char *rio = (u_char *) iopb; 1839 int sz = sizeof(struct xd_iopb), lcv; 1840 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 1841 for (lcv = 0; lcv < sz; lcv++) 1842 printf(" %02x", rio[lcv]); 1843 printf("]\n"); 1844 } 1845 #endif /* XDC_DEBUG */ 1846 1847 xdcsc->nrun--; 1848 1849 comm = iopb->comm; 1850 errs = iopb->errs; 1851 1852 if (errs) 1853 iorq->errno = iopb->errno; 1854 else 1855 iorq->errno = 0; 1856 1857 /* handle non-fatal errors */ 1858 1859 if (errs && 1860 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 1861 continue; /* AOK: we resubmitted it */ 1862 1863 1864 /* this iorq is now done (hasn't been restarted or anything) */ 1865 1866 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 1867 xdc_perror(iorq, iopb, 0); 1868 1869 /* now, if read/write check to make sure we got all the data 1870 * we needed. (this may not be the case if we got an error in 1871 * the middle of a multisector request). */ 1872 1873 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 1874 (comm == XDCMD_RD || comm == XDCMD_WR)) { 1875 /* we just successfully processed a bad144 sector 1876 * note: if we are in bad 144 mode, the pointers have 1877 * been advanced already (see above) and are pointing 1878 * at the bad144 sector. to exit bad144 mode, we 1879 * must advance the pointers 1 sector and issue a new 1880 * request if there are still sectors left to process 1881 * 1882 */ 1883 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 1884 1885 /* exit b144 mode */ 1886 iorq->mode = iorq->mode & (~XD_MODE_B144); 1887 1888 if (iorq->sectcnt) { /* more to go! */ 1889 iorq->lasterror = iorq->errno = iopb->errno = 0; 1890 iopb->errs = iopb->done = 0; 1891 iorq->tries = 0; 1892 iopb->sectcnt = iorq->sectcnt; 1893 iopb->cylno = iorq->blockno / 1894 iorq->xd->sectpercyl; 1895 iopb->headno = 1896 (iorq->blockno / iorq->xd->nhead) % 1897 iorq->xd->nhead; 1898 iopb->sectno = iorq->blockno % XDFM_BPS; 1899 iopb->daddr = 1900 dvma_kvtopa(iorq->dbuf, xdcsc->bustype); 1901 XDC_HWAIT(xdcsc, rqno); 1902 xdc_start(xdcsc, 1); /* resubmit */ 1903 continue; 1904 } 1905 } 1906 /* final cleanup, totally done with this request */ 1907 1908 switch (XD_STATE(iorq->mode)) { 1909 case XD_SUB_NORM: 1910 bp = iorq->buf; 1911 if (errs) { 1912 bp->b_error = EIO; 1913 bp->b_flags |= B_ERROR; 1914 bp->b_resid = iorq->sectcnt * XDFM_BPS; 1915 } else { 1916 bp->b_resid = 0; /* done */ 1917 } 1918 /* Sun3: map/unmap regardless of B_PHYS */ 1919 dvma_mapout(iorq->dbufbase, 1920 iorq->buf->b_bcount); 1921 disk_unbusy(&iorq->xd->sc_dk, 1922 (bp->b_bcount - bp->b_resid)); 1923 XDC_FREE(xdcsc, rqno); 1924 biodone(bp); 1925 break; 1926 case XD_SUB_WAIT: 1927 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1928 xdcsc->ndone++; 1929 wakeup(iorq); 1930 break; 1931 case XD_SUB_POLL: 1932 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1933 xdcsc->ndone++; 1934 break; 1935 } 1936 } 1937 1938 return (XD_ERR_AOK); 1939 } 1940 1941 /* 1942 * xdc_perror: print error. 1943 * - if still_trying is true: we got an error, retried and got a 1944 * different error. in that case lasterror is the old error, 1945 * and errno is the new one. 1946 * - if still_trying is not true, then if we ever had an error it 1947 * is in lasterror. also, if iorq->errno == 0, then we recovered 1948 * from that error (otherwise iorq->errno == iorq->lasterror). 1949 */ 1950 void 1951 xdc_perror(iorq, iopb, still_trying) 1952 struct xd_iorq *iorq; 1953 struct xd_iopb *iopb; 1954 int still_trying; 1955 1956 { 1957 1958 int error = iorq->lasterror; 1959 1960 printf("%s", (iorq->xd) ? 1961 iorq->xd->sc_dev.dv_xname : 1962 iorq->xdc->sc_dev.dv_xname); 1963 if (iorq->buf) 1964 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1965 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 1966 printf("%s %d/%d/%d: ", 1967 (iopb->comm == XDCMD_RD) ? "read" : "write", 1968 iopb->cylno, iopb->headno, iopb->sectno); 1969 printf("%s", xdc_e2str(error)); 1970 1971 if (still_trying) 1972 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 1973 else 1974 if (iorq->errno == 0) 1975 printf(" [recovered in %d tries]", iorq->tries); 1976 1977 printf("\n"); 1978 } 1979 1980 /* 1981 * xdc_error: non-fatal error encountered... recover. 1982 * return AOK if resubmitted, return FAIL if this iopb is done 1983 */ 1984 int 1985 xdc_error(xdcsc, iorq, iopb, rqno, comm) 1986 struct xdc_softc *xdcsc; 1987 struct xd_iorq *iorq; 1988 struct xd_iopb *iopb; 1989 int rqno, comm; 1990 1991 { 1992 int errno = iorq->errno; 1993 int erract = errno & XD_ERA_MASK; 1994 int oldmode, advance, i; 1995 1996 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 1997 oldmode = iorq->mode; 1998 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 1999 xdcsc->ndone++; 2000 /* make xdc_start ignore us */ 2001 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2002 iorq->mode = oldmode; 2003 xdcsc->ndone--; 2004 } 2005 /* check for read/write to a sector in bad144 table if bad: redirect 2006 * request to bad144 area */ 2007 2008 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2009 (iorq->mode & XD_MODE_B144) == 0) { 2010 advance = iorq->sectcnt - iopb->sectcnt; 2011 XDC_ADVANCE(iorq, advance); 2012 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2013 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2014 iorq->blockno % iorq->xd->nsect)) != -1) { 2015 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2016 * redirect */ 2017 iopb->errno = iopb->done = iopb->errs = 0; 2018 iopb->sectcnt = 1; 2019 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2020 /* second to last acyl */ 2021 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2022 * standard */ 2023 iopb->headno = i / iorq->xd->nhead; 2024 iopb->sectno = i % iorq->xd->nhead; 2025 XDC_HWAIT(xdcsc, rqno); 2026 xdc_start(xdcsc, 1); /* resubmit */ 2027 return (XD_ERR_AOK); /* recovered! */ 2028 } 2029 } 2030 2031 /* 2032 * it isn't a bad144 sector, must be real error! see if we can retry 2033 * it? 2034 */ 2035 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2036 xdc_perror(iorq, iopb, 1); /* inform of error state 2037 * change */ 2038 iorq->lasterror = errno; 2039 2040 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2041 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2042 iorq->tries++; 2043 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2044 XDC_HWAIT(xdcsc, rqno); 2045 xdc_start(xdcsc, 1); /* restart */ 2046 return (XD_ERR_AOK); /* recovered! */ 2047 } 2048 2049 /* failed to recover from this error */ 2050 return (XD_ERR_FAIL); 2051 } 2052 2053 /* 2054 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2055 */ 2056 void 2057 xdc_tick(arg) 2058 void *arg; 2059 2060 { 2061 struct xdc_softc *xdcsc = arg; 2062 int lcv, s, reset = 0; 2063 #ifdef XDC_DIAG 2064 int wait, run, free, done, whd = 0; 2065 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2066 s = splbio(); 2067 wait = xdcsc->nwait; 2068 run = xdcsc->nrun; 2069 free = xdcsc->nfree; 2070 done = xdcsc->ndone; 2071 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2072 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2073 splx(s); 2074 if (wait + run + free + done != XDC_MAXIOPB) { 2075 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2076 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2077 memset(mark, 0, sizeof(mark)); 2078 printf("FREE: "); 2079 for (lcv = free; lcv > 0; lcv--) { 2080 printf("%d ", fqc[lcv - 1]); 2081 mark[fqc[lcv - 1]] = 1; 2082 } 2083 printf("\nWAIT: "); 2084 lcv = wait; 2085 while (lcv > 0) { 2086 printf("%d ", wqc[whd]); 2087 mark[wqc[whd]] = 1; 2088 whd = (whd + 1) % XDC_MAXIOPB; 2089 lcv--; 2090 } 2091 printf("\n"); 2092 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2093 if (mark[lcv] == 0) 2094 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2095 lcv, xdcsc->reqs[lcv].mode, 2096 xdcsc->iopbase[lcv].done, 2097 xdcsc->iopbase[lcv].errs, 2098 xdcsc->iopbase[lcv].errno, 2099 xdcsc->reqs[lcv].ttl, 2100 xdcsc->reqs[lcv].buf); 2101 } 2102 } else 2103 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2104 printf("%s: diag: lots of done jobs (%d)\n", 2105 xdcsc->sc_dev.dv_xname, done); 2106 2107 #endif 2108 #ifdef XDC_DEBUG 2109 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2110 xdcsc->sc_dev.dv_xname, 2111 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2112 xdcsc->ndone); 2113 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2114 if (xdcsc->reqs[lcv].mode) 2115 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2116 lcv, 2117 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2118 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2119 } 2120 #endif 2121 2122 /* reduce ttl for each request if one goes to zero, reset xdc */ 2123 s = splbio(); 2124 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2125 if (xdcsc->reqs[lcv].mode == 0 || 2126 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2127 continue; 2128 xdcsc->reqs[lcv].ttl--; 2129 if (xdcsc->reqs[lcv].ttl == 0) 2130 reset = 1; 2131 } 2132 if (reset) { 2133 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2134 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2135 } 2136 splx(s); 2137 2138 /* until next time */ 2139 2140 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2141 } 2142 2143 /* 2144 * xdc_ioctlcmd: this function provides a user level interface to the 2145 * controller via ioctl. this allows "format" programs to be written 2146 * in user code, and is also useful for some debugging. we return 2147 * an error code. called at user priority. 2148 */ 2149 int 2150 xdc_ioctlcmd(xd, dev, xio) 2151 struct xd_softc *xd; 2152 dev_t dev; 2153 struct xd_iocmd *xio; 2154 2155 { 2156 int s, err, rqno; 2157 caddr_t dvmabuf = NULL; 2158 struct xdc_softc *xdcsc; 2159 2160 /* check sanity of requested command */ 2161 2162 switch (xio->cmd) { 2163 2164 case XDCMD_NOP: /* no op: everything should be zero */ 2165 if (xio->subfn || xio->dptr || xio->dlen || 2166 xio->block || xio->sectcnt) 2167 return (EINVAL); 2168 break; 2169 2170 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2171 case XDCMD_WR: 2172 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2173 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2174 return (EINVAL); 2175 break; 2176 2177 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2178 return (EINVAL); 2179 2180 case XDCMD_WRP: /* write parameters */ 2181 return (EINVAL);/* not useful, except maybe drive 2182 * parameters... but drive parameters should 2183 * go via disklabel changes */ 2184 2185 case XDCMD_RDP: /* read parameters */ 2186 if (xio->subfn != XDFUN_DRV || 2187 xio->dlen || xio->block || xio->dptr) 2188 return (EINVAL); /* allow read drive params to 2189 * get hw_spt */ 2190 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2191 return (0); 2192 break; 2193 2194 case XDCMD_XRD: /* extended read/write */ 2195 case XDCMD_XWR: 2196 2197 switch (xio->subfn) { 2198 2199 case XDFUN_THD:/* track headers */ 2200 if (xio->sectcnt != xd->hw_spt || 2201 (xio->block % xd->nsect) != 0 || 2202 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2203 xio->dptr == NULL) 2204 return (EINVAL); 2205 xio->sectcnt = 0; 2206 break; 2207 2208 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2209 if (xio->cmd == XDCMD_XRD) 2210 return (EINVAL); /* no XDFUN_VFY */ 2211 if (xio->sectcnt || xio->dlen || 2212 (xio->block % xd->nsect) != 0 || xio->dptr) 2213 return (EINVAL); 2214 break; 2215 2216 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2217 return (EINVAL); /* not yet */ 2218 2219 case XDFUN_DM: /* defect map */ 2220 case XDFUN_DMX:/* defect map (alternate location) */ 2221 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2222 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2223 return (EINVAL); 2224 break; 2225 2226 default: 2227 return (EINVAL); 2228 } 2229 break; 2230 2231 case XDCMD_TST: /* diagnostics */ 2232 return (EINVAL); 2233 2234 default: 2235 return (EINVAL);/* ??? */ 2236 } 2237 2238 /* create DVMA buffer for request if needed */ 2239 2240 if (xio->dlen) { 2241 dvmabuf = dvma_malloc(xio->dlen); 2242 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2243 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2244 if (err) { 2245 dvma_free(dvmabuf, xio->dlen); 2246 return (err); 2247 } 2248 } 2249 } 2250 /* do it! */ 2251 2252 err = 0; 2253 xdcsc = xd->parent; 2254 s = splbio(); 2255 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2256 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2257 if (rqno == XD_ERR_FAIL) { 2258 err = EIO; 2259 goto done; 2260 } 2261 xio->errno = xdcsc->reqs[rqno].errno; 2262 xio->tries = xdcsc->reqs[rqno].tries; 2263 XDC_DONE(xdcsc, rqno, err); 2264 2265 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2266 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2267 2268 done: 2269 splx(s); 2270 if (dvmabuf) 2271 dvma_free(dvmabuf, xio->dlen); 2272 return (err); 2273 } 2274 2275 /* 2276 * xdc_e2str: convert error code number into an error string 2277 */ 2278 char * 2279 xdc_e2str(no) 2280 int no; 2281 { 2282 switch (no) { 2283 case XD_ERR_FAIL: 2284 return ("Software fatal error"); 2285 case XD_ERR_AOK: 2286 return ("Successful completion"); 2287 case XD_ERR_ICYL: 2288 return ("Illegal cylinder address"); 2289 case XD_ERR_IHD: 2290 return ("Illegal head address"); 2291 case XD_ERR_ISEC: 2292 return ("Illgal sector address"); 2293 case XD_ERR_CZER: 2294 return ("Count zero"); 2295 case XD_ERR_UIMP: 2296 return ("Unimplemented command"); 2297 case XD_ERR_IF1: 2298 return ("Illegal field length 1"); 2299 case XD_ERR_IF2: 2300 return ("Illegal field length 2"); 2301 case XD_ERR_IF3: 2302 return ("Illegal field length 3"); 2303 case XD_ERR_IF4: 2304 return ("Illegal field length 4"); 2305 case XD_ERR_IF5: 2306 return ("Illegal field length 5"); 2307 case XD_ERR_IF6: 2308 return ("Illegal field length 6"); 2309 case XD_ERR_IF7: 2310 return ("Illegal field length 7"); 2311 case XD_ERR_ISG: 2312 return ("Illegal scatter/gather length"); 2313 case XD_ERR_ISPT: 2314 return ("Not enough sectors per track"); 2315 case XD_ERR_ALGN: 2316 return ("Next IOPB address alignment error"); 2317 case XD_ERR_SGAL: 2318 return ("Scatter/gather address alignment error"); 2319 case XD_ERR_SGEC: 2320 return ("Scatter/gather with auto-ECC"); 2321 case XD_ERR_SECC: 2322 return ("Soft ECC corrected"); 2323 case XD_ERR_SIGN: 2324 return ("ECC ignored"); 2325 case XD_ERR_ASEK: 2326 return ("Auto-seek retry recovered"); 2327 case XD_ERR_RTRY: 2328 return ("Soft retry recovered"); 2329 case XD_ERR_HECC: 2330 return ("Hard data ECC"); 2331 case XD_ERR_NHDR: 2332 return ("Header not found"); 2333 case XD_ERR_NRDY: 2334 return ("Drive not ready"); 2335 case XD_ERR_TOUT: 2336 return ("Operation timeout"); 2337 case XD_ERR_VTIM: 2338 return ("VMEDMA timeout"); 2339 case XD_ERR_DSEQ: 2340 return ("Disk sequencer error"); 2341 case XD_ERR_HDEC: 2342 return ("Header ECC error"); 2343 case XD_ERR_RVFY: 2344 return ("Read verify"); 2345 case XD_ERR_VFER: 2346 return ("Fatail VMEDMA error"); 2347 case XD_ERR_VBUS: 2348 return ("VMEbus error"); 2349 case XD_ERR_DFLT: 2350 return ("Drive faulted"); 2351 case XD_ERR_HECY: 2352 return ("Header error/cyliner"); 2353 case XD_ERR_HEHD: 2354 return ("Header error/head"); 2355 case XD_ERR_NOCY: 2356 return ("Drive not on-cylinder"); 2357 case XD_ERR_SEEK: 2358 return ("Seek error"); 2359 case XD_ERR_ILSS: 2360 return ("Illegal sector size"); 2361 case XD_ERR_SEC: 2362 return ("Soft ECC"); 2363 case XD_ERR_WPER: 2364 return ("Write-protect error"); 2365 case XD_ERR_IRAM: 2366 return ("IRAM self test failure"); 2367 case XD_ERR_MT3: 2368 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2369 case XD_ERR_MT4: 2370 return ("Maintenance test 4 failure (header shift reg)"); 2371 case XD_ERR_MT5: 2372 return ("Maintenance test 5 failure (VMEDMA regs)"); 2373 case XD_ERR_MT6: 2374 return ("Maintenance test 6 failure (REGCEL chip)"); 2375 case XD_ERR_MT7: 2376 return ("Maintenance test 7 failure (buffer parity)"); 2377 case XD_ERR_MT8: 2378 return ("Maintenance test 8 failure (disk FIFO)"); 2379 case XD_ERR_IOCK: 2380 return ("IOPB checksum miscompare"); 2381 case XD_ERR_IODM: 2382 return ("IOPB DMA fatal"); 2383 case XD_ERR_IOAL: 2384 return ("IOPB address alignment error"); 2385 case XD_ERR_FIRM: 2386 return ("Firmware error"); 2387 case XD_ERR_MMOD: 2388 return ("Illegal maintenance mode test number"); 2389 case XD_ERR_ACFL: 2390 return ("ACFAIL asserted"); 2391 default: 2392 return ("Unknown error"); 2393 } 2394 } 2395