1 /* $NetBSD: xd.c,v 1.81 2025/09/06 21:20:20 andvar Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Charles D. Cranor 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * 30 * 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 31 * 32 * author: Chuck Cranor <chuck@netbsd> 33 * id: &Id: xd.c,v 1.9 1995/09/25 20:12:44 chuck Exp & 34 * started: 27-Feb-95 35 * references: [1] Xylogics Model 753 User's Manual 36 * part number: 166-753-001, Revision B, May 21, 1988. 37 * "Your Partner For Performance" 38 * [2] other NetBSD disk device drivers 39 * 40 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 41 * the time to answer some of my questions about the 753/7053. 42 * 43 * note: the 753 and the 7053 are programmed the same way, but are 44 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 45 * VME card (found in many VME based suns). 46 */ 47 48 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: xd.c,v 1.81 2025/09/06 21:20:20 andvar Exp $"); 50 51 #undef XDC_DEBUG /* full debug */ 52 #define XDC_DIAG /* extra sanity checks */ 53 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 54 #define XDC_DIAG /* link in with master DIAG option */ 55 #endif 56 57 #include <sys/param.h> 58 #include <sys/proc.h> 59 #include <sys/systm.h> 60 #include <sys/kernel.h> 61 #include <sys/file.h> 62 #include <sys/stat.h> 63 #include <sys/ioctl.h> 64 #include <sys/buf.h> 65 #include <sys/bufq.h> 66 #include <sys/uio.h> 67 #include <sys/kmem.h> 68 #include <sys/device.h> 69 #include <sys/disklabel.h> 70 #include <sys/disk.h> 71 #include <sys/syslog.h> 72 #include <sys/dkbad.h> 73 #include <sys/conf.h> 74 #include <sys/kauth.h> 75 76 #include <uvm/uvm_extern.h> 77 78 #include <machine/autoconf.h> 79 #include <machine/dvma.h> 80 81 #include <dev/sun/disklabel.h> 82 83 #include <sun3/dev/xdreg.h> 84 #include <sun3/dev/xdvar.h> 85 #include <sun3/dev/xio.h> 86 87 #include "ioconf.h" 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 do { \ 111 (SC)->waitq[(SC)->waitend] = (N); \ 112 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 113 (SC)->nwait++; \ 114 } while (/* CONSTCOND */ 0) 115 116 /* 117 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 118 */ 119 #define XDC_HWAIT(SC, N) \ 120 do { \ 121 (SC)->waithead = ((SC)->waithead == 0) ? \ 122 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 123 (SC)->waitq[(SC)->waithead] = (N); \ 124 (SC)->nwait++; \ 125 } while (/* CONSTCOND */ 0) 126 127 /* 128 * XDC_GET_WAITER: gets the first request waiting on the waitq 129 * and removes it (so it can be submitted) 130 */ 131 #define XDC_GET_WAITER(XDCSC, RQ) \ 132 do { \ 133 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 134 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 135 xdcsc->nwait--; \ 136 } while (/* CONSTCOND */ 0) 137 138 /* 139 * XDC_FREE: add iorq "N" to SC's free list 140 */ 141 #define XDC_FREE(SC, N) \ 142 do { \ 143 (SC)->freereq[(SC)->nfree++] = (N); \ 144 (SC)->reqs[N].mode = 0; \ 145 if ((SC)->nfree == 1) \ 146 wakeup(&(SC)->nfree); \ 147 } while (/* CONSTCOND */ 0) 148 149 150 /* 151 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 152 */ 153 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 154 155 /* 156 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 157 */ 158 #define XDC_GO(XDC, ADDR) \ 159 do { \ 160 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 161 (ADDR) = ((ADDR) >> 8); \ 162 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 163 (ADDR) = ((ADDR) >> 8); \ 164 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 165 (ADDR) = ((ADDR) >> 8); \ 166 (XDC)->xdc_iopbaddr3 = (ADDR); \ 167 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 168 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 169 } while (/* CONSTCOND */ 0) 170 171 /* 172 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 173 * LCV is a counter. If it goes to zero then we timed out. 174 */ 175 #define XDC_WAIT(XDC, LCV, TIME, BITS) \ 176 do { \ 177 (LCV) = (TIME); \ 178 while ((LCV) > 0) { \ 179 if ((XDC)->xdc_csr & (BITS)) \ 180 break; \ 181 (LCV) = (LCV) - 1; \ 182 DELAY(1); \ 183 } \ 184 } while (/* CONSTCOND */ 0) 185 186 /* 187 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 188 */ 189 #define XDC_DONE(SC,RQ,ER) \ 190 do { \ 191 if ((RQ) == XD_ERR_FAIL) { \ 192 (ER) = (RQ); \ 193 } else { \ 194 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 195 wakeup(&(SC)->ndone); \ 196 (ER) = (SC)->reqs[RQ].errno; \ 197 XDC_FREE((SC), (RQ)); \ 198 } \ 199 } while (/* CONSTCOND */ 0) 200 201 /* 202 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 203 */ 204 #define XDC_ADVANCE(IORQ, N) \ 205 do { \ 206 if (N) { \ 207 (IORQ)->sectcnt -= (N); \ 208 (IORQ)->blockno += (N); \ 209 (IORQ)->dbuf += ((N) * XDFM_BPS); \ 210 } \ 211 } while (/* CONSTCOND */ 0) 212 213 /* 214 * note - addresses you can sleep on: 215 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 216 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 217 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 218 * to drop below XDC_SUBWAITLIM) 219 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 220 */ 221 222 223 /* 224 * function prototypes 225 * "xdc_*" functions are internal, all others are external interfaces 226 */ 227 228 /* internals */ 229 int xdc_cmd(struct xdc_softc *, int, int, int, int, int, char *, int); 230 const char *xdc_e2str(int); 231 int xdc_error(struct xdc_softc *, struct xd_iorq *, struct xd_iopb *, int, 232 int); 233 int xdc_ioctlcmd(struct xd_softc *, dev_t dev, struct xd_iocmd *); 234 void xdc_perror(struct xd_iorq *, struct xd_iopb *, int); 235 int xdc_piodriver(struct xdc_softc *, int, int); 236 int xdc_remove_iorq(struct xdc_softc *); 237 int xdc_reset(struct xdc_softc *, int, int, int, struct xd_softc *); 238 inline void xdc_rqinit(struct xd_iorq *, struct xdc_softc *, struct xd_softc *, 239 int, u_long, int, void *, struct buf *); 240 void xdc_rqtopb(struct xd_iorq *, struct xd_iopb *, int, int); 241 void xdc_start(struct xdc_softc *, int); 242 int xdc_startbuf(struct xdc_softc *, struct xd_softc *, struct buf *); 243 int xdc_submit_iorq(struct xdc_softc *, int, int); 244 void xdc_tick(void *); 245 void xdc_xdreset(struct xdc_softc *, struct xd_softc *); 246 247 /* machine interrupt hook */ 248 int xdcintr(void *); 249 250 /* autoconf */ 251 static int xdcmatch(device_t, cfdata_t, void *); 252 static void xdcattach(device_t, device_t, void *); 253 static int xdc_print(void *, const char *); 254 255 static int xdmatch(device_t, cfdata_t, void *); 256 static void xdattach(device_t, device_t, void *); 257 static void xd_init(struct xd_softc *); 258 259 static void xddummystrat(struct buf *); 260 int xdgetdisklabel(struct xd_softc *, void *); 261 262 /* 263 * cfattach's: device driver interface to autoconfig 264 */ 265 266 CFATTACH_DECL_NEW(xdc, sizeof(struct xdc_softc), 267 xdcmatch, xdcattach, NULL, NULL); 268 269 CFATTACH_DECL_NEW(xd, sizeof(struct xd_softc), 270 xdmatch, xdattach, NULL, NULL); 271 272 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 273 int driveno; /* unit number */ 274 char *dvmabuf; /* scratch buffer for reading disk label */ 275 int fullmode; /* submit mode */ 276 int booting; /* are we booting or not? */ 277 }; 278 279 static dev_type_open(xdopen); 280 static dev_type_close(xdclose); 281 static dev_type_read(xdread); 282 static dev_type_write(xdwrite); 283 static dev_type_ioctl(xdioctl); 284 static dev_type_strategy(xdstrategy); 285 static dev_type_dump(xddump); 286 static dev_type_size(xdsize); 287 288 const struct bdevsw xd_bdevsw = { 289 .d_open = xdopen, 290 .d_close = xdclose, 291 .d_strategy = xdstrategy, 292 .d_ioctl = xdioctl, 293 .d_dump = xddump, 294 .d_psize = xdsize, 295 .d_discard = nodiscard, 296 .d_flag = D_DISK 297 }; 298 299 const struct cdevsw xd_cdevsw = { 300 .d_open = xdopen, 301 .d_close = xdclose, 302 .d_read = xdread, 303 .d_write = xdwrite, 304 .d_ioctl = xdioctl, 305 .d_stop = nostop, 306 .d_tty = notty, 307 .d_poll = nopoll, 308 .d_mmap = nommap, 309 .d_kqfilter = nokqfilter, 310 .d_discard = nodiscard, 311 .d_flag = D_DISK 312 }; 313 314 /* 315 * dkdriver 316 */ 317 318 struct dkdriver xddkdriver = { 319 .d_strategy = xdstrategy 320 }; 321 322 /* 323 * start: disk label fix code (XXX) 324 */ 325 326 static void *xd_labeldata; 327 328 static void 329 xddummystrat(struct buf *bp) 330 { 331 if (bp->b_bcount != XDFM_BPS) 332 panic("%s: b_bcount", __func__); 333 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 334 bp->b_oflags |= BO_DONE; 335 bp->b_cflags &= ~BC_BUSY; 336 } 337 338 int 339 xdgetdisklabel(struct xd_softc *xd, void *b) 340 { 341 const char *err; 342 struct sun_disklabel *sdl; 343 344 /* We already have the label data in `b'; setup for dummy strategy */ 345 xd_labeldata = b; 346 347 /* Required parameter for readdisklabel() */ 348 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 349 350 err = readdisklabel(MAKEDISKDEV(0, device_unit(xd->sc_dev), RAW_PART), 351 xddummystrat, xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 352 if (err) { 353 printf("%s: %s\n", device_xname(xd->sc_dev), err); 354 return XD_ERR_FAIL; 355 } 356 357 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 358 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 359 if (sdl->sl_magic == SUN_DKMAGIC) 360 xd->pcyl = sdl->sl_pcyl; 361 else { 362 printf("%s: WARNING: no `pcyl' in disk label.\n", 363 device_xname(xd->sc_dev)); 364 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 365 xd->sc_dk.dk_label->d_acylinders; 366 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 367 device_xname(xd->sc_dev), xd->pcyl); 368 } 369 370 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 371 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 372 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 373 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 374 xd->sectpercyl = xd->nhead * xd->nsect; 375 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 376 * sun->bsd */ 377 return XD_ERR_AOK; 378 } 379 380 /* 381 * end: disk label fix code (XXX) 382 */ 383 384 /* 385 * a u t o c o n f i g f u n c t i o n s 386 */ 387 388 /* 389 * xdcmatch: determine if xdc is present or not. we do a 390 * soft reset to detect the xdc. 391 */ 392 393 int 394 xdcmatch(device_t parent, cfdata_t cf, void *aux) 395 { 396 struct confargs *ca = aux; 397 398 /* No default VME address. */ 399 if (ca->ca_paddr == -1) 400 return 0; 401 402 /* Make sure something is there... */ 403 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 11, 1) == -1) 404 return 0; 405 406 /* Default interrupt priority. */ 407 if (ca->ca_intpri == -1) 408 ca->ca_intpri = 2; 409 410 return 1; 411 } 412 413 /* 414 * xdcattach: attach controller 415 */ 416 void 417 xdcattach(device_t parent, device_t self, void *aux) 418 { 419 struct xdc_softc *xdc = device_private(self); 420 struct confargs *ca = aux; 421 struct xdc_attach_args xa; 422 int lcv, rqno, err; 423 struct xd_iopb_ctrl *ctl; 424 425 /* get addressing and intr level stuff from autoconfig and load it 426 * into our xdc_softc. */ 427 428 xdc->sc_dev = self; 429 xdc->xdc = (struct xdc *)bus_mapin(ca->ca_bustype, ca->ca_paddr, 430 sizeof(struct xdc)); 431 xdc->bustype = ca->ca_bustype; 432 xdc->ipl = ca->ca_intpri; 433 xdc->vector = ca->ca_intvec; 434 435 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 436 xdc->sc_drives[lcv] = NULL; 437 438 /* allocate and zero buffers 439 * 440 * note: we simplify the code by allocating the max number of iopbs and 441 * iorq's up front. thus, we avoid linked lists and the costs 442 * associated with them in exchange for wasting a little memory. */ 443 444 xdc->iopbase = (struct xd_iopb *)dvma_malloc(XDC_MAXIOPB * 445 sizeof(struct xd_iopb)); /* KVA */ 446 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 447 xdc->dvmaiopb = (struct xd_iopb *)dvma_kvtopa(xdc->iopbase, 448 xdc->bustype); 449 xdc->reqs = kmem_zalloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 450 KM_SLEEP); 451 452 /* init free list, iorq to iopb pointers, and non-zero fields in the 453 * iopb which never change. */ 454 455 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 456 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 457 xdc->freereq[lcv] = lcv; 458 xdc->iopbase[lcv].fixd = 1; /* always the same */ 459 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 460 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 461 } 462 xdc->nfree = XDC_MAXIOPB; 463 xdc->nrun = 0; 464 xdc->waithead = xdc->waitend = xdc->nwait = 0; 465 xdc->ndone = 0; 466 467 /* init queue of waiting bufs */ 468 469 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 470 callout_init(&xdc->sc_tick_ch, 0); 471 472 /* 473 * section 7 of the manual tells us how to init the controller: 474 * - read controller parameters (6/0) 475 * - write controller parameters (5/0) 476 */ 477 478 /* read controller parameters and insure we have a 753/7053 */ 479 480 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 481 if (rqno == XD_ERR_FAIL) { 482 aprint_error(": couldn't read controller params\n"); 483 return; /* shouldn't ever happen */ 484 } 485 ctl = (struct xd_iopb_ctrl *)&xdc->iopbase[rqno]; 486 if (ctl->ctype != XDCT_753) { 487 if (xdc->reqs[rqno].errno) 488 aprint_error(": %s: ", 489 xdc_e2str(xdc->reqs[rqno].errno)); 490 aprint_error(": doesn't identify as a 753/7053\n"); 491 XDC_DONE(xdc, rqno, err); 492 return; 493 } 494 aprint_normal(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 495 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 496 XDC_DONE(xdc, rqno, err); 497 498 /* now write controller parameters (xdc_cmd sets all params for us) */ 499 500 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 501 XDC_DONE(xdc, rqno, err); 502 if (err) { 503 aprint_error_dev(self, "controller config error: %s\n", 504 xdc_e2str(err)); 505 return; 506 } 507 508 /* link in interrupt with higher level software */ 509 isr_add_vectored(xdcintr, xdc, ca->ca_intpri, ca->ca_intvec); 510 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 511 device_xname(self), "intr"); 512 513 /* now we must look for disks using autoconfig */ 514 xa.booting = 1; 515 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 516 (void)config_found(self, (void *)&xa, xdc_print, CFARGS_NONE); 517 518 /* start the watchdog clock */ 519 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 520 } 521 522 int 523 xdc_print(void *aux, const char *name) 524 { 525 struct xdc_attach_args *xa = aux; 526 527 if (name != NULL) 528 aprint_normal("%s: ", name); 529 530 if (xa->driveno != -1) 531 aprint_normal(" drive %d", xa->driveno); 532 533 return UNCONF; 534 } 535 536 /* 537 * xdmatch: probe for disk. 538 * 539 * note: we almost always say disk is present. this allows us to 540 * spin up and configure a disk after the system is booted (we can 541 * call xdattach!). Also, wire down the relationship between the 542 * xd* and xdc* devices, to simplify boot device identification. 543 */ 544 int 545 xdmatch(device_t parent, cfdata_t cf, void *aux) 546 { 547 struct xdc_attach_args *xa = aux; 548 int xd_unit; 549 550 /* Match only on the "wired-down" controller+disk. */ 551 xd_unit = device_unit(parent) * 2 + xa->driveno; 552 if (cf->cf_unit != xd_unit) 553 return 0; 554 555 return 1; 556 } 557 558 /* 559 * xdattach: attach a disk. 560 */ 561 void 562 xdattach(device_t parent, device_t self, void *aux) 563 { 564 struct xd_softc *xd = device_private(self); 565 struct xdc_softc *xdc = device_private(parent); 566 struct xdc_attach_args *xa = aux; 567 568 xd->sc_dev = self; 569 aprint_normal("\n"); 570 571 /* 572 * Always re-initialize the disk structure. We want statistics 573 * to start with a clean slate. 574 */ 575 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 576 disk_init(&xd->sc_dk, device_xname(self), &xddkdriver); 577 578 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 579 xd->flags = 0; 580 xd->parent = xdc; 581 582 xd->xd_drive = xa->driveno; 583 xdc->sc_drives[xa->driveno] = xd; 584 585 /* Do init work common to attach and open. */ 586 xd_init(xd); 587 } 588 589 /* 590 * end of autoconfig functions 591 */ 592 593 /* 594 * Initialize a disk. This can be called from both autoconf and 595 * also from xdopen/xdstrategy. 596 */ 597 static void 598 xd_init(struct xd_softc *xd) 599 { 600 struct xdc_softc *xdc; 601 struct dkbad *dkb; 602 struct xd_iopb_drive *driopb; 603 void *dvmabuf; 604 int rqno, err, spt, mb, blk, lcv, fullmode, newstate; 605 606 xdc = xd->parent; 607 xd->state = XD_DRIVE_ATTACHING; 608 newstate = XD_DRIVE_UNKNOWN; 609 fullmode = (cold) ? XD_SUB_POLL : XD_SUB_WAIT; 610 dvmabuf = dvma_malloc(XDFM_BPS); 611 612 /* first try and reset the drive */ 613 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fullmode); 614 XDC_DONE(xdc, rqno, err); 615 if (err == XD_ERR_NRDY) { 616 printf("%s: drive %d: off-line\n", 617 device_xname(xd->sc_dev), xd->xd_drive); 618 goto done; 619 } 620 if (err) { 621 printf("%s: ERROR 0x%02x (%s)\n", 622 device_xname(xd->sc_dev), err, xdc_e2str(err)); 623 goto done; 624 } 625 printf("%s: drive %d ready\n", 626 device_xname(xd->sc_dev), xd->xd_drive); 627 628 /* now set format parameters */ 629 630 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 631 0, 0, 0, fullmode); 632 XDC_DONE(xdc, rqno, err); 633 if (err) { 634 printf("%s: write format parameters failed: %s\n", 635 device_xname(xd->sc_dev), xdc_e2str(err)); 636 goto done; 637 } 638 639 /* get drive parameters */ 640 spt = 0; 641 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 642 0, 0, 0, fullmode); 643 if (rqno != XD_ERR_FAIL) { 644 driopb = (struct xd_iopb_drive *)&xdc->iopbase[rqno]; 645 spt = driopb->sectpertrk; 646 } 647 XDC_DONE(xdc, rqno, err); 648 if (err) { 649 printf("%s: read drive parameters failed: %s\n", 650 device_xname(xd->sc_dev), xdc_e2str(err)); 651 goto done; 652 } 653 654 /* 655 * now set drive parameters (to semi-bogus values) so we can read the 656 * disk label. 657 */ 658 xd->pcyl = xd->ncyl = 1; 659 xd->acyl = 0; 660 xd->nhead = 1; 661 xd->nsect = 1; 662 xd->sectpercyl = 1; 663 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 664 xd->dkb.bt_bad[lcv].bt_cyl = 665 xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 666 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 667 0, 0, 0, fullmode); 668 XDC_DONE(xdc, rqno, err); 669 if (err) { 670 printf("%s: write drive parameters failed: %s\n", 671 device_xname(xd->sc_dev), xdc_e2str(err)); 672 goto done; 673 } 674 675 /* read disk label */ 676 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 677 0, 1, dvmabuf, fullmode); 678 XDC_DONE(xdc, rqno, err); 679 if (err) { 680 printf("%s: reading disk label failed: %s\n", 681 device_xname(xd->sc_dev), xdc_e2str(err)); 682 goto done; 683 } 684 newstate = XD_DRIVE_NOLABEL; 685 686 xd->hw_spt = spt; 687 /* Attach the disk: must be before getdisklabel to malloc label */ 688 disk_attach(&xd->sc_dk); 689 690 if (xdgetdisklabel(xd, dvmabuf) != XD_ERR_AOK) 691 goto done; 692 693 /* inform the user of what is up */ 694 printf("%s: <%s>, pcyl %d, hw_spt %d\n", 695 device_xname(xd->sc_dev), (char *)dvmabuf, xd->pcyl, spt); 696 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 697 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 698 device_xname(xd->sc_dev), mb, 699 xd->ncyl, xd->nhead, xd->nsect); 700 701 /* now set the real drive parameters! */ 702 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 703 0, 0, 0, fullmode); 704 XDC_DONE(xdc, rqno, err); 705 if (err) { 706 printf("%s: write real drive parameters failed: %s\n", 707 device_xname(xd->sc_dev), xdc_e2str(err)); 708 goto done; 709 } 710 newstate = XD_DRIVE_ONLINE; 711 712 /* 713 * read bad144 table. this table resides on the first sector of the 714 * last track of the disk (i.e. second cyl of "acyl" area). 715 */ 716 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 717 (xd->nhead - 1) * xd->nsect; /* last head */ 718 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 719 blk, 1, dvmabuf, fullmode); 720 XDC_DONE(xdc, rqno, err); 721 if (err) { 722 printf("%s: reading bad144 failed: %s\n", 723 device_xname(xd->sc_dev), xdc_e2str(err)); 724 goto done; 725 } 726 727 /* check dkbad for sanity */ 728 dkb = (struct dkbad *)dvmabuf; 729 for (lcv = 0; lcv < 126; lcv++) { 730 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 731 dkb->bt_bad[lcv].bt_cyl == 0) && 732 dkb->bt_bad[lcv].bt_trksec == 0xffff) 733 continue; /* blank */ 734 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 735 break; 736 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 737 break; 738 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 739 break; 740 } 741 if (lcv != 126) { 742 printf("%s: warning: invalid bad144 sector!\n", 743 device_xname(xd->sc_dev)); 744 } else { 745 memcpy(&xd->dkb, dvmabuf, XDFM_BPS); 746 } 747 748 done: 749 xd->state = newstate; 750 dvma_free(dvmabuf, XDFM_BPS); 751 } 752 753 /* 754 * { b , c } d e v s w f u n c t i o n s 755 */ 756 757 /* 758 * xdclose: close device 759 */ 760 static int 761 xdclose(dev_t dev, int flag, int fmt, struct lwp *l) 762 { 763 struct xd_softc *xd = device_lookup_private(&xd_cd, DISKUNIT(dev)); 764 int part = DISKPART(dev); 765 766 /* clear mask bits */ 767 768 switch (fmt) { 769 case S_IFCHR: 770 xd->sc_dk.dk_copenmask &= ~(1 << part); 771 break; 772 case S_IFBLK: 773 xd->sc_dk.dk_bopenmask &= ~(1 << part); 774 break; 775 } 776 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 777 778 return 0; 779 } 780 781 /* 782 * xddump: crash dump system 783 */ 784 static int 785 xddump(dev_t dev, daddr_t blkno, void *va, size_t sz) 786 { 787 int unit, part; 788 struct xd_softc *xd; 789 790 unit = DISKUNIT(dev); 791 part = DISKPART(dev); 792 793 xd = device_lookup_private(&xd_cd, unit); 794 if (xd == NULL) 795 return ENXIO; 796 797 printf("%s%c: crash dump not supported (yet)\n", 798 device_xname(xd->sc_dev), 'a' + part); 799 800 return ENXIO; 801 802 /* outline: globals: "dumplo" == sector number of partition to start 803 * dump at (convert to physical sector with partition table) 804 * "dumpsize" == size of dump in clicks "physmem" == size of physical 805 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 806 * physmem) 807 * 808 * dump a copy of physical memory to the dump device starting at sector 809 * "dumplo" in the swap partition (make sure > 0). map in pages as 810 * we go. use polled I/O. 811 * 812 * XXX how to handle NON_CONTIG? 813 */ 814 } 815 816 static enum kauth_device_req 817 xd_getkauthreq(u_char cmd) 818 { 819 enum kauth_device_req req; 820 821 switch (cmd) { 822 case XDCMD_WR: 823 case XDCMD_XWR: 824 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 825 break; 826 827 case XDCMD_RD: 828 case XDCMD_XRD: 829 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 830 break; 831 832 case XDCMD_RDP: 833 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 834 break; 835 836 case XDCMD_WRP: 837 case XDCMD_RST: 838 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 839 break; 840 841 case XDCMD_NOP: 842 case XDCMD_SK: 843 case XDCMD_TST: 844 default: 845 req = 0; 846 break; 847 } 848 849 return req; 850 } 851 852 /* 853 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 854 */ 855 static int 856 xdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 857 { 858 struct xd_softc *xd; 859 struct xd_iocmd *xio; 860 int error, s, unit; 861 862 unit = DISKUNIT(dev); 863 864 xd = device_lookup_private(&xd_cd, unit); 865 if (xd == NULL) 866 return (ENXIO); 867 868 error = disk_ioctl(&xd->sc_dk, dev, cmd, addr, flag, l); 869 if (error != EPASSTHROUGH) 870 return error; 871 872 /* switch on ioctl type */ 873 874 switch (cmd) { 875 case DIOCSBAD: /* set bad144 info */ 876 if ((flag & FWRITE) == 0) 877 return EBADF; 878 s = splbio(); 879 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 880 splx(s); 881 return 0; 882 883 case DIOCSDINFO: /* set disk label */ 884 if ((flag & FWRITE) == 0) 885 return EBADF; 886 error = setdisklabel(xd->sc_dk.dk_label, 887 (struct disklabel *)addr, /* xd->sc_dk.dk_openmask : */ 0, 888 xd->sc_dk.dk_cpulabel); 889 if (error == 0) { 890 if (xd->state == XD_DRIVE_NOLABEL) 891 xd->state = XD_DRIVE_ONLINE; 892 } 893 return error; 894 895 case DIOCWLABEL: /* change write status of disk label */ 896 if ((flag & FWRITE) == 0) 897 return EBADF; 898 if (*(int *)addr) 899 xd->flags |= XD_WLABEL; 900 else 901 xd->flags &= ~XD_WLABEL; 902 return 0; 903 904 case DIOCWDINFO: /* write disk label */ 905 if ((flag & FWRITE) == 0) 906 return EBADF; 907 error = setdisklabel(xd->sc_dk.dk_label, 908 (struct disklabel *)addr, /* xd->sc_dk.dk_openmask : */ 0, 909 xd->sc_dk.dk_cpulabel); 910 if (error == 0) { 911 if (xd->state == XD_DRIVE_NOLABEL) 912 xd->state = XD_DRIVE_ONLINE; 913 914 /* Simulate opening partition 0 so write succeeds. */ 915 xd->sc_dk.dk_openmask |= (1 << 0); 916 error = writedisklabel(MAKEDISKDEV(major(dev), 917 DISKUNIT(dev), RAW_PART), 918 xdstrategy, xd->sc_dk.dk_label, 919 xd->sc_dk.dk_cpulabel); 920 xd->sc_dk.dk_openmask = 921 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 922 } 923 return error; 924 925 case DIOSXDCMD: { 926 enum kauth_device_req req; 927 928 xio = (struct xd_iocmd *)addr; 929 req = xd_getkauthreq(xio->cmd); 930 if ((error = kauth_authorize_device_passthru(l->l_cred, 931 dev, req, xio)) != 0) 932 return error; 933 return xdc_ioctlcmd(xd, dev, xio); 934 } 935 936 default: 937 return ENOTTY; 938 } 939 } 940 941 /* 942 * xdopen: open drive 943 */ 944 static int 945 xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 946 { 947 int err, unit, part, s; 948 struct xd_softc *xd; 949 950 /* first, could it be a valid target? */ 951 unit = DISKUNIT(dev); 952 xd = device_lookup_private(&xd_cd, unit); 953 if (xd == NULL) 954 return ENXIO; 955 part = DISKPART(dev); 956 err = 0; 957 958 /* 959 * If some other processing is doing init, sleep. 960 */ 961 s = splbio(); 962 while (xd->state == XD_DRIVE_ATTACHING) { 963 if (tsleep(&xd->state, PRIBIO, "xdopen", 0)) { 964 err = EINTR; 965 goto done; 966 } 967 } 968 /* Do we need to init the drive? */ 969 if (xd->state == XD_DRIVE_UNKNOWN) { 970 xd_init(xd); 971 wakeup(&xd->state); 972 } 973 /* Was the init successful? */ 974 if (xd->state == XD_DRIVE_UNKNOWN) { 975 err = EIO; 976 goto done; 977 } 978 979 /* check for partition */ 980 if (part != RAW_PART && 981 (part >= xd->sc_dk.dk_label->d_npartitions || 982 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 983 err = ENXIO; 984 goto done; 985 } 986 987 /* set open masks */ 988 switch (fmt) { 989 case S_IFCHR: 990 xd->sc_dk.dk_copenmask |= (1 << part); 991 break; 992 case S_IFBLK: 993 xd->sc_dk.dk_bopenmask |= (1 << part); 994 break; 995 } 996 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 997 998 done: 999 splx(s); 1000 return err; 1001 } 1002 1003 static int 1004 xdread(dev_t dev, struct uio *uio, int flags) 1005 { 1006 1007 return physio(xdstrategy, NULL, dev, B_READ, minphys, uio); 1008 } 1009 1010 static int 1011 xdwrite(dev_t dev, struct uio *uio, int flags) 1012 { 1013 1014 return physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio); 1015 } 1016 1017 1018 /* 1019 * xdsize: return size of a partition for a dump 1020 */ 1021 static int 1022 xdsize(dev_t dev) 1023 { 1024 struct xd_softc *xdsc; 1025 int unit, part, size, omask; 1026 1027 /* valid unit? */ 1028 unit = DISKUNIT(dev); 1029 xdsc = device_lookup_private(&xd_cd, unit); 1030 if (xdsc == NULL) 1031 return -1; 1032 1033 part = DISKPART(dev); 1034 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1035 1036 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1037 return -1; 1038 1039 /* do it */ 1040 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1041 size = -1; /* only give valid size for swap partitions */ 1042 else 1043 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1044 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1045 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1046 return -1; 1047 return size; 1048 } 1049 1050 /* 1051 * xdstrategy: buffering system interface to xd. 1052 */ 1053 static void 1054 xdstrategy(struct buf *bp) 1055 { 1056 struct xd_softc *xd; 1057 struct xdc_softc *parent; 1058 int s, unit; 1059 1060 unit = DISKUNIT(bp->b_dev); 1061 1062 /* check for live device */ 1063 1064 xd = device_lookup_private(&xd_cd, unit); 1065 if (xd == NULL || 1066 bp->b_blkno < 0 || 1067 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1068 bp->b_error = EINVAL; 1069 goto done; 1070 } 1071 1072 /* There should always be an open first. */ 1073 if (xd->state == XD_DRIVE_UNKNOWN) { 1074 bp->b_error = EIO; 1075 goto done; 1076 } 1077 1078 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1079 /* no I/O to unlabeled disks, unless raw partition */ 1080 bp->b_error = EIO; 1081 goto done; 1082 } 1083 /* short circuit zero length request */ 1084 1085 if (bp->b_bcount == 0) 1086 goto done; 1087 1088 /* check bounds with label (disksubr.c). Determine the size of the 1089 * transfer, and make sure it is within the boundaries of the 1090 * partition. Adjust transfer if needed, and signal errors or early 1091 * completion. */ 1092 1093 if (bounds_check_with_label(&xd->sc_dk, bp, 1094 (xd->flags & XD_WLABEL) != 0) <= 0) 1095 goto done; 1096 1097 /* 1098 * now we know we have a valid buf structure that we need to do I/O 1099 * on. 1100 * 1101 * note that we don't disksort because the controller has a sorting 1102 * algorithm built into the hardware. 1103 */ 1104 1105 s = splbio(); /* protect the queues */ 1106 1107 /* first, give jobs in front of us a chance */ 1108 parent = xd->parent; 1109 while (parent->nfree > 0 && bufq_peek(parent->sc_wq) != NULL) 1110 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1111 break; 1112 1113 /* 1114 * if there are no free iorq's, then we just queue and return. the 1115 * buffs will get picked up later by xdcintr(). 1116 */ 1117 if (parent->nfree == 0) { 1118 bufq_put(parent->sc_wq, bp); 1119 splx(s); 1120 return; 1121 } 1122 1123 /* now we have free iopb's and we are at splbio... start 'em up */ 1124 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1125 return; 1126 } 1127 1128 /* done! */ 1129 1130 splx(s); 1131 return; 1132 1133 done: 1134 /* tells upper layers we are done with this buf */ 1135 bp->b_resid = bp->b_bcount; 1136 biodone(bp); 1137 } 1138 /* 1139 * end of {b,c}devsw functions 1140 */ 1141 1142 /* 1143 * i n t e r r u p t f u n c t i o n 1144 * 1145 * xdcintr: hardware interrupt. 1146 */ 1147 int 1148 xdcintr(void *v) 1149 { 1150 struct xdc_softc *xdcsc = v; 1151 1152 /* kick the event counter */ 1153 xdcsc->sc_intrcnt.ev_count++; 1154 1155 /* remove as many done IOPBs as possible */ 1156 xdc_remove_iorq(xdcsc); 1157 1158 /* start any iorq's already waiting */ 1159 xdc_start(xdcsc, XDC_MAXIOPB); 1160 1161 /* fill up any remaining iorq's with queue'd buffers */ 1162 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1163 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1164 break; 1165 1166 return 1; 1167 } 1168 /* 1169 * end of interrupt function 1170 */ 1171 1172 /* 1173 * i n t e r n a l f u n c t i o n s 1174 */ 1175 1176 /* 1177 * xdc_rqinit: fill out the fields of an I/O request 1178 */ 1179 1180 inline void 1181 xdc_rqinit(struct xd_iorq *rq, struct xdc_softc *xdc, struct xd_softc *xd, 1182 int md, u_long blk, int cnt, void *db, struct buf *bp) 1183 { 1184 1185 rq->xdc = xdc; 1186 rq->xd = xd; 1187 rq->ttl = XDC_MAXTTL + 10; 1188 rq->mode = md; 1189 rq->tries = rq->errno = rq->lasterror = 0; 1190 rq->blockno = blk; 1191 rq->sectcnt = cnt; 1192 rq->dbuf = rq->dbufbase = db; 1193 rq->buf = bp; 1194 } 1195 1196 /* 1197 * xdc_rqtopb: load up an IOPB based on an iorq 1198 */ 1199 void 1200 xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1201 { 1202 u_long block, dp; 1203 1204 /* standard stuff */ 1205 1206 iopb->errs = iopb->done = 0; 1207 iopb->comm = cmd; 1208 iopb->errno = iopb->status = 0; 1209 iopb->subfun = subfun; 1210 if (iorq->xd) 1211 iopb->unit = iorq->xd->xd_drive; 1212 else 1213 iopb->unit = 0; 1214 1215 /* check for alternate IOPB format */ 1216 1217 if (cmd == XDCMD_WRP) { 1218 switch (subfun) { 1219 case XDFUN_CTL:{ 1220 struct xd_iopb_ctrl *ctrl = 1221 (struct xd_iopb_ctrl *)iopb; 1222 iopb->lll = 0; 1223 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1224 ? 0 : iorq->xdc->ipl; 1225 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1226 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1227 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1228 XDPC_RBC | XDPC_ECC2; 1229 ctrl->throttle = XDC_THROTTLE; 1230 #ifdef sparc 1231 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 1232 ctrl->delay = XDC_DELAY_4_300; 1233 else 1234 ctrl->delay = XDC_DELAY_SPARC; 1235 #endif 1236 #ifdef sun3 1237 ctrl->delay = XDC_DELAY_SUN3; 1238 #endif 1239 break; 1240 } 1241 case XDFUN_DRV:{ 1242 struct xd_iopb_drive *drv = 1243 (struct xd_iopb_drive *)iopb; 1244 /* we assume that the disk label has the right 1245 * info */ 1246 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1247 drv->dparam_ipl = (XDC_DPARAM << 3); 1248 else 1249 drv->dparam_ipl = (XDC_DPARAM << 3) | 1250 iorq->xdc->ipl; 1251 drv->maxsect = iorq->xd->nsect - 1; 1252 drv->maxsector = drv->maxsect; 1253 /* note: maxsector != maxsect only if you are 1254 * doing cyl sparing */ 1255 drv->headoff = 0; 1256 drv->maxcyl = iorq->xd->pcyl - 1; 1257 drv->maxhead = iorq->xd->nhead - 1; 1258 break; 1259 } 1260 case XDFUN_FMT: 1261 { 1262 struct xd_iopb_format *form = 1263 (struct xd_iopb_format *)iopb; 1264 1265 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1266 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1267 else 1268 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1269 iorq->xdc->ipl; 1270 form->field1 = XDFM_FIELD1; 1271 form->field2 = XDFM_FIELD2; 1272 form->field3 = XDFM_FIELD3; 1273 form->field4 = XDFM_FIELD4; 1274 form->bytespersec = XDFM_BPS; 1275 form->field6 = XDFM_FIELD6; 1276 form->field7 = XDFM_FIELD7; 1277 break; 1278 } 1279 } 1280 } else { 1281 1282 /* normal IOPB case (harmless to RDP command) */ 1283 1284 iopb->lll = 0; 1285 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1286 ? 0 : iorq->xdc->ipl; 1287 iopb->sectcnt = iorq->sectcnt; 1288 block = iorq->blockno; 1289 if (iorq->xd == NULL || block == 0) { 1290 iopb->sectno = iopb->headno = iopb->cylno = 0; 1291 } else { 1292 iopb->sectno = block % iorq->xd->nsect; 1293 block = block / iorq->xd->nsect; 1294 iopb->headno = block % iorq->xd->nhead; 1295 block = block / iorq->xd->nhead; 1296 iopb->cylno = block; 1297 } 1298 iopb->daddr = dp = (iorq->dbuf == NULL) ? 0 : 1299 dvma_kvtopa(iorq->dbuf, iorq->xdc->bustype); 1300 iopb->addrmod = XDC_ADDRMOD; 1301 } 1302 } 1303 1304 /* 1305 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1306 * If you've already got an IORQ, you can call submit directly (currently 1307 * there is no need to do this). NORM requests are handled separately. 1308 */ 1309 int 1310 xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1311 int scnt, char *dptr, int fullmode) 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(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1371 { 1372 int rqno, partno; 1373 struct xd_iorq *iorq; 1374 struct xd_iopb *iopb; 1375 u_long block; 1376 void *dbuf; 1377 1378 if (xdcsc->nfree == 0) 1379 panic("xdc_startbuf free"); 1380 rqno = XDC_RQALLOC(xdcsc); 1381 iorq = &xdcsc->reqs[rqno]; 1382 iopb = iorq->iopb; 1383 1384 /* get buf */ 1385 1386 if (bp == NULL) { 1387 bp = bufq_get(xdcsc->sc_wq); 1388 if (bp == NULL) 1389 panic("%s bp", __func__); 1390 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1391 } 1392 partno = DISKPART(bp->b_dev); 1393 #ifdef XDC_DEBUG 1394 printf("xdc_startbuf: %s%c: %s block %d\n", device_xname(xdsc->sc_dev), 1395 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1396 printf("%s: b_bcount %d, b_data 0x%x\n", __func__, 1397 bp->b_bcount, bp->b_data); 1398 #endif 1399 1400 /* 1401 * load request. we have to calculate the correct block number based 1402 * on partition info. 1403 * 1404 * also, note that there are two kinds of buf structures, those with 1405 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1406 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1407 * buffer which has already been mapped into DVMA space. (Not on sun3) 1408 * However, if B_PHYS is not set, then the buffer is a normal system 1409 * buffer which does *not* live in DVMA space. In that case we call 1410 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1411 * 1412 * in cases where we do a dvma_mapin, note that iorq points to the 1413 * buffer as mapped into DVMA space, where as the bp->b_data points 1414 * to its non-DVMA mapping. 1415 * 1416 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1417 * into dvma space, only that it was remapped into the kernel. 1418 * We ALWAYS have to remap the kernel buf into DVMA space. 1419 * (It is done inexpensively, using whole segments!) 1420 */ 1421 1422 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1423 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1424 1425 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1426 if (dbuf == NULL) { /* out of DVMA space */ 1427 printf("%s: warning: out of DVMA space\n", 1428 device_xname(xdcsc->sc_dev)); 1429 XDC_FREE(xdcsc, rqno); 1430 bufq_put(xdcsc->sc_wq, bp); 1431 return XD_ERR_FAIL; /* XXX: need some sort of 1432 * call-back scheme here? */ 1433 } 1434 1435 /* init iorq and load iopb from it */ 1436 1437 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1438 bp->b_bcount / XDFM_BPS, dbuf, bp); 1439 1440 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1441 1442 /* Instrumentation. */ 1443 disk_busy(&xdsc->sc_dk); 1444 1445 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1446 1447 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1448 return XD_ERR_AOK; 1449 } 1450 1451 1452 /* 1453 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1454 * if ok. if it fail returns an error code. type is XD_SUB_*. 1455 * 1456 * note: caller frees iorq in all cases except NORM 1457 * 1458 * return value: 1459 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1460 * WAIT: XD_AOK (success), <error-code> (failed) 1461 * POLL: <same as WAIT> 1462 * NOQ : <same as NORM> 1463 * 1464 * there are three sources for i/o requests: 1465 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1466 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1467 * [3] open/ioctl: these are I/O requests done in the context of a process, 1468 * and the process should block until they are done. 1469 * 1470 * software state is stored in the iorq structure. each iorq has an 1471 * iopb structure. the hardware understands the iopb structure. 1472 * every command must go through an iopb. a 7053 can only handle 1473 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1474 * DVMA space at boot up time. what happens if we run out of iopb's? 1475 * for i/o type [1], the buffers are queued at the "buff" layer and 1476 * picked up later by the interrupt routine. for case [2] the 1477 * programmed i/o driver is called with a special flag that says 1478 * return when one iopb is free. for case [3] the process can sleep 1479 * on the iorq free list until some iopbs are available. 1480 */ 1481 1482 int 1483 xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1484 { 1485 u_long iopbaddr; 1486 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1487 1488 #ifdef XDC_DEBUG 1489 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", 1490 device_xname(xdcsc->sc_dev), iorqno, type); 1491 #endif 1492 1493 /* first check and see if controller is busy */ 1494 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1495 #ifdef XDC_DEBUG 1496 printf("%s: XDC not ready (ADDING)\n", __func__); 1497 #endif 1498 if (type == XD_SUB_NOQ) 1499 return XD_ERR_FAIL; /* failed */ 1500 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1501 switch (type) { 1502 case XD_SUB_NORM: 1503 return XD_ERR_AOK; /* success */ 1504 case XD_SUB_WAIT: 1505 while (iorq->iopb->done == 0) { 1506 (void)tsleep(iorq, PRIBIO, "xdciorq", 0); 1507 } 1508 return iorq->errno; 1509 case XD_SUB_POLL: 1510 return xdc_piodriver(xdcsc, iorqno, 0); 1511 default: 1512 panic("%s adding", __func__); 1513 } 1514 } 1515 #ifdef XDC_DEBUG 1516 { 1517 u_char *rio = (u_char *)iorq->iopb; 1518 int sz = sizeof(struct xd_iopb), lcv; 1519 printf("%s: aio #%d [", 1520 device_xname(xdcsc->sc_dev), iorq - xdcsc->reqs); 1521 for (lcv = 0; lcv < sz; lcv++) 1522 printf(" %02x", rio[lcv]); 1523 printf("]\n"); 1524 } 1525 #endif /* XDC_DEBUG */ 1526 1527 /* controller not busy, start command */ 1528 iopbaddr = dvma_kvtopa(iorq->iopb, xdcsc->bustype); 1529 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1530 xdcsc->nrun++; 1531 /* command now running, wrap it up */ 1532 switch (type) { 1533 case XD_SUB_NORM: 1534 case XD_SUB_NOQ: 1535 return XD_ERR_AOK; /* success */ 1536 case XD_SUB_WAIT: 1537 while (iorq->iopb->done == 0) { 1538 (void)tsleep(iorq, PRIBIO, "xdciorq", 0); 1539 } 1540 return iorq->errno; 1541 case XD_SUB_POLL: 1542 return xdc_piodriver(xdcsc, iorqno, 0); 1543 default: 1544 panic("%s wrap up", __func__); 1545 } 1546 panic("%s: impossible", __func__); 1547 return 0; /* not reached */ 1548 } 1549 1550 1551 /* 1552 * xdc_piodriver 1553 * 1554 * programmed i/o driver. this function takes over the computer 1555 * and drains off all i/o requests. it returns the status of the iorq 1556 * the caller is interesting in. if freeone is true, then it returns 1557 * when there is a free iorq. 1558 */ 1559 int 1560 xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 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("%s(%s, %d, freeone=%d)\n", __func__, 1568 device_xname(xdcsc->sc_dev), iorqno, freeone); 1569 #endif 1570 1571 while (xdcsc->nwait || xdcsc->nrun) { 1572 #ifdef XDC_DEBUG 1573 printf("%s: wait=%d, run=%d\n", __func__, 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("%s: done wait with count = %d\n", __func__, 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("%s: timeout\n", __func__); 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, 0) == XD_ERR_FAIL) 1592 return XD_ERR_FAIL; /* flushes all but POLL 1593 * requests, resets */ 1594 continue; 1595 } 1596 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1597 if (freeone) { 1598 if (xdcsc->nrun < XDC_MAXIOPB) { 1599 #ifdef XDC_DEBUG 1600 printf("%s: done: one free\n", __func__); 1601 #endif 1602 return XD_ERR_AOK; 1603 } 1604 continue; /* don't xdc_start */ 1605 } 1606 xdc_start(xdcsc, XDC_MAXIOPB); 1607 } 1608 1609 /* get return value */ 1610 1611 retval = xdcsc->reqs[iorqno].errno; 1612 1613 #ifdef XDC_DEBUG 1614 printf("%s: done, retval = 0x%x (%s)\n", __func__, 1615 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1616 #endif 1617 1618 /* 1619 * now that we've drained everything, start up any bufs that have 1620 * queued 1621 */ 1622 1623 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1624 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1625 break; 1626 1627 return retval; 1628 } 1629 1630 /* 1631 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1632 * we steal iopb[0] for this, but we put it back when we are done. 1633 */ 1634 void 1635 xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1636 { 1637 struct xd_iopb tmpiopb; 1638 u_long addr; 1639 int del; 1640 1641 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1642 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1643 xdcsc->iopbase->comm = XDCMD_RST; 1644 xdcsc->iopbase->unit = xdsc->xd_drive; 1645 addr = (u_long)xdcsc->dvmaiopb; 1646 XDC_GO(xdcsc->xdc, addr); /* go! */ 1647 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1648 if (del <= 0 || xdcsc->iopbase->errs) { 1649 printf("%s: off-line: %s\n", device_xname(xdcsc->sc_dev), 1650 xdc_e2str(xdcsc->iopbase->errno)); 1651 xdcsc->xdc->xdc_csr = XDC_RESET; 1652 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1653 if (del <= 0) 1654 panic("%s", __func__); 1655 } else { 1656 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1657 } 1658 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1659 } 1660 1661 1662 /* 1663 * xdc_reset: reset everything: requests are marked as errors except 1664 * a polled request (which is resubmitted) 1665 */ 1666 int 1667 xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1668 struct xd_softc *xdsc) 1669 { 1670 int del = 0, lcv, retval = XD_ERR_AOK; 1671 int oldfree = xdcsc->nfree; 1672 struct xd_iorq *iorq; 1673 1674 /* soft reset hardware */ 1675 1676 if (quiet == 0) 1677 printf("%s: soft reset\n", device_xname(xdcsc->sc_dev)); 1678 xdcsc->xdc->xdc_csr = XDC_RESET; 1679 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1680 if (del <= 0) { 1681 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1682 retval = XD_ERR_FAIL; 1683 } 1684 if (xdsc) 1685 xdc_xdreset(xdcsc, xdsc); 1686 1687 /* fix queues based on "blast-mode" */ 1688 1689 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1690 iorq = &xdcsc->reqs[lcv]; 1691 1692 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1693 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1694 XD_STATE(iorq->mode) != XD_SUB_NORM) 1695 /* is it active? */ 1696 continue; 1697 1698 xdcsc->nrun--; /* it isn't running any more */ 1699 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1700 /* failed */ 1701 iorq->errno = error; 1702 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1703 switch (XD_STATE(iorq->mode)) { 1704 case XD_SUB_NORM: 1705 iorq->buf->b_error = EIO; 1706 iorq->buf->b_resid = iorq->sectcnt * XDFM_BPS; 1707 /* Sun3: map/unmap regardless of B_PHYS */ 1708 dvma_mapout(iorq->dbufbase, 1709 iorq->buf->b_bcount); 1710 disk_unbusy(&iorq->xd->sc_dk, 1711 (iorq->buf->b_bcount - iorq->buf->b_resid), 1712 (iorq->buf->b_flags & B_READ)); 1713 biodone(iorq->buf); 1714 XDC_FREE(xdcsc, lcv); /* add to free list */ 1715 break; 1716 case XD_SUB_WAIT: 1717 wakeup(iorq); 1718 case XD_SUB_POLL: 1719 xdcsc->ndone++; 1720 iorq->mode = 1721 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1722 break; 1723 } 1724 1725 } else { 1726 1727 /* resubmit, put at front of wait queue */ 1728 XDC_HWAIT(xdcsc, lcv); 1729 } 1730 } 1731 1732 /* 1733 * now, if stuff is waiting, start it. 1734 * since we just reset it should go 1735 */ 1736 xdc_start(xdcsc, XDC_MAXIOPB); 1737 1738 /* ok, we did it */ 1739 if (oldfree == 0 && xdcsc->nfree) 1740 wakeup(&xdcsc->nfree); 1741 1742 #ifdef XDC_DIAG 1743 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1744 if (del != XDC_MAXIOPB) 1745 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1746 device_xname(xdcsc->sc_dev), del, XDC_MAXIOPB); 1747 else 1748 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1749 printf("%s: diag: lots of done jobs (%d)\n", 1750 device_xname(xdcsc->sc_dev), xdcsc->ndone); 1751 #endif 1752 printf("RESET DONE\n"); 1753 return retval; 1754 } 1755 1756 /* 1757 * xdc_start: start all waiting buffers 1758 */ 1759 void 1760 xdc_start(struct xdc_softc *xdcsc, int maxio) 1761 { 1762 int rqno; 1763 while (maxio && xdcsc->nwait && 1764 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1765 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1766 * param */ 1767 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1768 panic("%s", __func__); /* should never happen */ 1769 maxio--; 1770 } 1771 } 1772 1773 /* 1774 * xdc_remove_iorq: remove "done" IOPB's. 1775 */ 1776 int 1777 xdc_remove_iorq(struct xdc_softc *xdcsc) 1778 { 1779 int errno, rqno, comm, errs; 1780 struct xdc *xdc = xdcsc->xdc; 1781 struct xd_iopb *iopb; 1782 struct xd_iorq *iorq; 1783 struct buf *bp; 1784 1785 if (xdc->xdc_csr & XDC_F_ERROR) { 1786 /* 1787 * FATAL ERROR: should never happen under normal use. This 1788 * error is so bad, you can't even tell which IOPB is bad, so 1789 * we dump them all. 1790 */ 1791 errno = xdc->xdc_f_err; 1792 printf("%s: fatal error 0x%02x: %s\n", 1793 device_xname(xdcsc->sc_dev), errno, xdc_e2str(errno)); 1794 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 1795 printf("%s: soft reset failed!\n", 1796 device_xname(xdcsc->sc_dev)); 1797 panic("%s: controller DEAD", __func__); 1798 } 1799 return XD_ERR_AOK; 1800 } 1801 1802 /* 1803 * get iopb that is done 1804 * 1805 * hmm... I used to read the address of the done IOPB off the VME 1806 * registers and calculate the rqno directly from that. that worked 1807 * until I started putting a load on the controller. when loaded, i 1808 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1809 * be set, even after DELAY'ing a while! later on the timeout 1810 * routine would detect IOPBs that were marked "running" but their 1811 * "done" bit was set. rather than dealing directly with this 1812 * problem, it is just easier to look at all running IOPB's for the 1813 * done bit. 1814 */ 1815 if (xdc->xdc_csr & XDC_REMIOPB) { 1816 xdc->xdc_csr = XDC_CLRRIO; 1817 } 1818 1819 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1820 iorq = &xdcsc->reqs[rqno]; 1821 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1822 continue; /* free, or done */ 1823 iopb = &xdcsc->iopbase[rqno]; 1824 if (iopb->done == 0) 1825 continue; /* not done yet */ 1826 1827 #ifdef XDC_DEBUG 1828 { 1829 u_char *rio = (u_char *)iopb; 1830 int sz = sizeof(struct xd_iopb), lcv; 1831 1832 printf("%s: rio #%d [", 1833 device_xname(xdcsc->sc_dev), rqno); 1834 for (lcv = 0; lcv < sz; lcv++) 1835 printf(" %02x", rio[lcv]); 1836 printf("]\n"); 1837 } 1838 #endif /* XDC_DEBUG */ 1839 1840 xdcsc->nrun--; 1841 1842 comm = iopb->comm; 1843 errs = iopb->errs; 1844 1845 if (errs) 1846 iorq->errno = iopb->errno; 1847 else 1848 iorq->errno = 0; 1849 1850 /* handle non-fatal errors */ 1851 1852 if (errs && 1853 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 1854 continue; /* AOK: we resubmitted it */ 1855 1856 1857 /* this iorq is now done (hasn't been restarted or anything) */ 1858 1859 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 1860 xdc_perror(iorq, iopb, 0); 1861 1862 /* now, if read/write check to make sure we got all the data 1863 * we needed. (this may not be the case if we got an error in 1864 * the middle of a multisector request). */ 1865 1866 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 1867 (comm == XDCMD_RD || comm == XDCMD_WR)) { 1868 /* we just successfully processed a bad144 sector 1869 * note: if we are in bad 144 mode, the pointers have 1870 * been advanced already (see above) and are pointing 1871 * at the bad144 sector. to exit bad144 mode, we 1872 * must advance the pointers 1 sector and issue a new 1873 * request if there are still sectors left to process 1874 * 1875 */ 1876 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 1877 1878 /* exit b144 mode */ 1879 iorq->mode = iorq->mode & (~XD_MODE_B144); 1880 1881 if (iorq->sectcnt) { /* more to go! */ 1882 iorq->lasterror = iorq->errno = iopb->errno = 0; 1883 iopb->errs = iopb->done = 0; 1884 iorq->tries = 0; 1885 iopb->sectcnt = iorq->sectcnt; 1886 iopb->cylno = 1887 iorq->blockno / iorq->xd->sectpercyl; 1888 iopb->headno = 1889 (iorq->blockno / iorq->xd->nhead) % 1890 iorq->xd->nhead; 1891 iopb->sectno = iorq->blockno % XDFM_BPS; 1892 iopb->daddr = 1893 dvma_kvtopa(iorq->dbuf, xdcsc->bustype); 1894 XDC_HWAIT(xdcsc, rqno); 1895 xdc_start(xdcsc, 1); /* resubmit */ 1896 continue; 1897 } 1898 } 1899 /* final cleanup, totally done with this request */ 1900 1901 switch (XD_STATE(iorq->mode)) { 1902 case XD_SUB_NORM: 1903 bp = iorq->buf; 1904 if (errs) { 1905 bp->b_error = EIO; 1906 bp->b_resid = iorq->sectcnt * XDFM_BPS; 1907 } else { 1908 bp->b_resid = 0; /* done */ 1909 } 1910 /* Sun3: map/unmap regardless of B_PHYS */ 1911 dvma_mapout(iorq->dbufbase, iorq->buf->b_bcount); 1912 disk_unbusy(&iorq->xd->sc_dk, 1913 (bp->b_bcount - bp->b_resid), 1914 (bp->b_flags & B_READ)); 1915 XDC_FREE(xdcsc, rqno); 1916 biodone(bp); 1917 break; 1918 case XD_SUB_WAIT: 1919 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1920 xdcsc->ndone++; 1921 wakeup(iorq); 1922 break; 1923 case XD_SUB_POLL: 1924 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1925 xdcsc->ndone++; 1926 break; 1927 } 1928 } 1929 1930 return XD_ERR_AOK; 1931 } 1932 1933 /* 1934 * xdc_perror: print error. 1935 * - if still_trying is true: we got an error, retried and got a 1936 * different error. in that case lasterror is the old error, 1937 * and errno is the new one. 1938 * - if still_trying is not true, then if we ever had an error it 1939 * is in lasterror. also, if iorq->errno == 0, then we recovered 1940 * from that error (otherwise iorq->errno == iorq->lasterror). 1941 */ 1942 void 1943 xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 1944 { 1945 int error = iorq->lasterror; 1946 1947 printf("%s", (iorq->xd) ? 1948 device_xname(iorq->xd->sc_dev) : 1949 device_xname(iorq->xdc->sc_dev)); 1950 if (iorq->buf) 1951 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 1952 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 1953 printf("%s %d/%d/%d: ", 1954 (iopb->comm == XDCMD_RD) ? "read" : "write", 1955 iopb->cylno, iopb->headno, iopb->sectno); 1956 printf("%s", xdc_e2str(error)); 1957 1958 if (still_trying) 1959 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 1960 else 1961 if (iorq->errno == 0) 1962 printf(" [recovered in %d tries]", iorq->tries); 1963 1964 printf("\n"); 1965 } 1966 1967 /* 1968 * xdc_error: non-fatal error encountered... recover. 1969 * return AOK if resubmitted, return FAIL if this iopb is done 1970 */ 1971 int 1972 xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 1973 int rqno, int comm) 1974 1975 { 1976 int errno = iorq->errno; 1977 int erract = errno & XD_ERA_MASK; 1978 int oldmode, advance, i; 1979 1980 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 1981 oldmode = iorq->mode; 1982 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 1983 xdcsc->ndone++; 1984 /* make xdc_start ignore us */ 1985 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 1986 iorq->mode = oldmode; 1987 xdcsc->ndone--; 1988 } 1989 /* check for read/write to a sector in bad144 table if bad: redirect 1990 * request to bad144 area */ 1991 1992 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 1993 (iorq->mode & XD_MODE_B144) == 0) { 1994 advance = iorq->sectcnt - iopb->sectcnt; 1995 XDC_ADVANCE(iorq, advance); 1996 if ((i = isbad(&iorq->xd->dkb, 1997 iorq->blockno / iorq->xd->sectpercyl, 1998 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 1999 iorq->blockno % iorq->xd->nsect)) != -1) { 2000 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2001 * redirect */ 2002 iopb->errno = iopb->done = iopb->errs = 0; 2003 iopb->sectcnt = 1; 2004 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2005 /* second to last acyl */ 2006 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2007 * standard */ 2008 iopb->headno = i / iorq->xd->nhead; 2009 iopb->sectno = i % iorq->xd->nhead; 2010 XDC_HWAIT(xdcsc, rqno); 2011 xdc_start(xdcsc, 1); /* resubmit */ 2012 return XD_ERR_AOK; /* recovered! */ 2013 } 2014 } 2015 2016 /* 2017 * it isn't a bad144 sector, must be real error! see if we can retry 2018 * it? 2019 */ 2020 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2021 xdc_perror(iorq, iopb, 1); /* inform of error state 2022 * change */ 2023 iorq->lasterror = errno; 2024 2025 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2026 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2027 iorq->tries++; 2028 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2029 XDC_HWAIT(xdcsc, rqno); 2030 xdc_start(xdcsc, 1); /* restart */ 2031 return XD_ERR_AOK; /* recovered! */ 2032 } 2033 2034 /* failed to recover from this error */ 2035 return XD_ERR_FAIL; 2036 } 2037 2038 /* 2039 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2040 */ 2041 void 2042 xdc_tick(void *arg) 2043 { 2044 struct xdc_softc *xdcsc = arg; 2045 int lcv, s, reset = 0; 2046 #ifdef XDC_DIAG 2047 int nwait, nrun, nfree, ndone, whd = 0; 2048 uint8_t fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2049 s = splbio(); 2050 nwait = xdcsc->nwait; 2051 nrun = xdcsc->nrun; 2052 nfree = xdcsc->nfree; 2053 ndone = xdcsc->ndone; 2054 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2055 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2056 splx(s); 2057 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2058 printf("%s: diag: IOPB miscount " 2059 "(got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2060 device_xname(xdcsc->sc_dev), nwait, nfree, nrun, ndone, 2061 XDC_MAXIOPB); 2062 memset(mark, 0, sizeof(mark)); 2063 printf("FREE: "); 2064 for (lcv = nfree; lcv > 0; lcv--) { 2065 printf("%d ", fqc[lcv - 1]); 2066 mark[fqc[lcv - 1]] = 1; 2067 } 2068 printf("\nWAIT: "); 2069 lcv = nwait; 2070 while (lcv > 0) { 2071 printf("%d ", wqc[whd]); 2072 mark[wqc[whd]] = 1; 2073 whd = (whd + 1) % XDC_MAXIOPB; 2074 lcv--; 2075 } 2076 printf("\n"); 2077 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2078 if (mark[lcv] == 0) { 2079 printf("MARK: running %d: mode %d done %d " 2080 "errs %d errno 0x%x ttl %d buf %p\n", 2081 lcv, xdcsc->reqs[lcv].mode, 2082 xdcsc->iopbase[lcv].done, 2083 xdcsc->iopbase[lcv].errs, 2084 xdcsc->iopbase[lcv].errno, 2085 xdcsc->reqs[lcv].ttl, 2086 xdcsc->reqs[lcv].buf); 2087 } 2088 } 2089 } else 2090 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2091 printf("%s: diag: lots of done jobs (%d)\n", 2092 device_xname(xdcsc->sc_dev), ndone); 2093 2094 #endif 2095 #ifdef XDC_DEBUG 2096 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2097 device_xname(xdcsc->sc_dev), 2098 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2099 xdcsc->ndone); 2100 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2101 if (xdcsc->reqs[lcv].mode) { 2102 printf("running %d: " 2103 "mode %d done %d errs %d errno 0x%x\n", lcv, 2104 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2105 xdcsc->iopbase[lcv].errs, 2106 xdcsc->iopbase[lcv].errno); 2107 } 2108 } 2109 #endif 2110 2111 /* reduce ttl for each request if one goes to zero, reset xdc */ 2112 s = splbio(); 2113 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2114 if (xdcsc->reqs[lcv].mode == 0 || 2115 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2116 continue; 2117 xdcsc->reqs[lcv].ttl--; 2118 if (xdcsc->reqs[lcv].ttl == 0) 2119 reset = 1; 2120 } 2121 if (reset) { 2122 printf("%s: watchdog timeout\n", device_xname(xdcsc->sc_dev)); 2123 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2124 } 2125 splx(s); 2126 2127 /* until next time */ 2128 2129 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2130 } 2131 2132 /* 2133 * xdc_ioctlcmd: this function provides a user level interface to the 2134 * controller via ioctl. this allows "format" programs to be written 2135 * in user code, and is also useful for some debugging. we return 2136 * an error code. called at user priority. 2137 */ 2138 int 2139 xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2140 { 2141 int s, err, rqno; 2142 void *dvmabuf = NULL; 2143 struct xdc_softc *xdcsc; 2144 2145 /* check sanity of requested command */ 2146 2147 switch (xio->cmd) { 2148 2149 case XDCMD_NOP: /* no op: everything should be zero */ 2150 if (xio->subfn || xio->dptr || xio->dlen || 2151 xio->block || xio->sectcnt) 2152 return EINVAL; 2153 break; 2154 2155 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2156 case XDCMD_WR: 2157 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2158 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2159 return EINVAL; 2160 break; 2161 2162 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2163 return EINVAL; 2164 2165 case XDCMD_WRP: /* write parameters */ 2166 return EINVAL; /* not useful, except maybe drive 2167 * parameters... but drive parameters should 2168 * go via disklabel changes */ 2169 2170 case XDCMD_RDP: /* read parameters */ 2171 if (xio->subfn != XDFUN_DRV || 2172 xio->dlen || xio->block || xio->dptr) 2173 return EINVAL; /* allow read drive params to 2174 * get hw_spt */ 2175 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2176 return 0; 2177 break; 2178 2179 case XDCMD_XRD: /* extended read/write */ 2180 case XDCMD_XWR: 2181 2182 switch (xio->subfn) { 2183 2184 case XDFUN_THD:/* track headers */ 2185 if (xio->sectcnt != xd->hw_spt || 2186 (xio->block % xd->nsect) != 0 || 2187 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2188 xio->dptr == NULL) 2189 return EINVAL; 2190 xio->sectcnt = 0; 2191 break; 2192 2193 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2194 if (xio->cmd == XDCMD_XRD) 2195 return EINVAL; /* no XDFUN_VFY */ 2196 if (xio->sectcnt || xio->dlen || 2197 (xio->block % xd->nsect) != 0 || xio->dptr) 2198 return EINVAL; 2199 break; 2200 2201 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2202 return EINVAL; /* not yet */ 2203 2204 case XDFUN_DM: /* defect map */ 2205 case XDFUN_DMX:/* defect map (alternate location) */ 2206 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2207 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2208 return EINVAL; 2209 break; 2210 2211 default: 2212 return EINVAL; 2213 } 2214 break; 2215 2216 case XDCMD_TST: /* diagnostics */ 2217 return EINVAL; 2218 2219 default: 2220 return EINVAL;/* ??? */ 2221 } 2222 2223 /* create DVMA buffer for request if needed */ 2224 2225 if (xio->dlen) { 2226 dvmabuf = dvma_malloc(xio->dlen); 2227 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2228 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2229 if (err) { 2230 dvma_free(dvmabuf, xio->dlen); 2231 return err; 2232 } 2233 } 2234 } 2235 /* do it! */ 2236 2237 err = 0; 2238 xdcsc = xd->parent; 2239 s = splbio(); 2240 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2241 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2242 if (rqno == XD_ERR_FAIL) { 2243 err = EIO; 2244 goto done; 2245 } 2246 xio->errno = xdcsc->reqs[rqno].errno; 2247 xio->tries = xdcsc->reqs[rqno].tries; 2248 XDC_DONE(xdcsc, rqno, err); 2249 2250 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2251 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2252 2253 done: 2254 splx(s); 2255 if (dvmabuf) 2256 dvma_free(dvmabuf, xio->dlen); 2257 return err; 2258 } 2259 2260 /* 2261 * xdc_e2str: convert error code number into an error string 2262 */ 2263 const char * 2264 xdc_e2str(int no) 2265 { 2266 2267 switch (no) { 2268 case XD_ERR_FAIL: 2269 return "Software fatal error"; 2270 case XD_ERR_AOK: 2271 return "Successful completion"; 2272 case XD_ERR_ICYL: 2273 return "Illegal cylinder address"; 2274 case XD_ERR_IHD: 2275 return "Illegal head address"; 2276 case XD_ERR_ISEC: 2277 return "Illegal sector address"; 2278 case XD_ERR_CZER: 2279 return "Count zero"; 2280 case XD_ERR_UIMP: 2281 return "Unimplemented command"; 2282 case XD_ERR_IF1: 2283 return "Illegal field length 1"; 2284 case XD_ERR_IF2: 2285 return "Illegal field length 2"; 2286 case XD_ERR_IF3: 2287 return "Illegal field length 3"; 2288 case XD_ERR_IF4: 2289 return "Illegal field length 4"; 2290 case XD_ERR_IF5: 2291 return "Illegal field length 5"; 2292 case XD_ERR_IF6: 2293 return "Illegal field length 6"; 2294 case XD_ERR_IF7: 2295 return "Illegal field length 7"; 2296 case XD_ERR_ISG: 2297 return "Illegal scatter/gather length"; 2298 case XD_ERR_ISPT: 2299 return "Not enough sectors per track"; 2300 case XD_ERR_ALGN: 2301 return "Next IOPB address alignment error"; 2302 case XD_ERR_SGAL: 2303 return "Scatter/gather address alignment error"; 2304 case XD_ERR_SGEC: 2305 return "Scatter/gather with auto-ECC"; 2306 case XD_ERR_SECC: 2307 return "Soft ECC corrected"; 2308 case XD_ERR_SIGN: 2309 return "ECC ignored"; 2310 case XD_ERR_ASEK: 2311 return "Auto-seek retry recovered"; 2312 case XD_ERR_RTRY: 2313 return "Soft retry recovered"; 2314 case XD_ERR_HECC: 2315 return "Hard data ECC"; 2316 case XD_ERR_NHDR: 2317 return "Header not found"; 2318 case XD_ERR_NRDY: 2319 return "Drive not ready"; 2320 case XD_ERR_TOUT: 2321 return "Operation timeout"; 2322 case XD_ERR_VTIM: 2323 return "VMEDMA timeout"; 2324 case XD_ERR_DSEQ: 2325 return "Disk sequencer error"; 2326 case XD_ERR_HDEC: 2327 return "Header ECC error"; 2328 case XD_ERR_RVFY: 2329 return "Read verify"; 2330 case XD_ERR_VFER: 2331 return "Fatail VMEDMA error"; 2332 case XD_ERR_VBUS: 2333 return "VMEbus error"; 2334 case XD_ERR_DFLT: 2335 return "Drive faulted"; 2336 case XD_ERR_HECY: 2337 return "Header error/cylinder"; 2338 case XD_ERR_HEHD: 2339 return "Header error/head"; 2340 case XD_ERR_NOCY: 2341 return "Drive not on-cylinder"; 2342 case XD_ERR_SEEK: 2343 return "Seek error"; 2344 case XD_ERR_ILSS: 2345 return "Illegal sector size"; 2346 case XD_ERR_SEC: 2347 return "Soft ECC"; 2348 case XD_ERR_WPER: 2349 return "Write-protect error"; 2350 case XD_ERR_IRAM: 2351 return "IRAM self test failure"; 2352 case XD_ERR_MT3: 2353 return "Maintenance test 3 failure (DSKCEL RAM)"; 2354 case XD_ERR_MT4: 2355 return "Maintenance test 4 failure (header shift reg)"; 2356 case XD_ERR_MT5: 2357 return "Maintenance test 5 failure (VMEDMA regs)"; 2358 case XD_ERR_MT6: 2359 return "Maintenance test 6 failure (REGCEL chip)"; 2360 case XD_ERR_MT7: 2361 return "Maintenance test 7 failure (buffer parity)"; 2362 case XD_ERR_MT8: 2363 return "Maintenance test 8 failure (disk FIFO)"; 2364 case XD_ERR_IOCK: 2365 return "IOPB checksum miscompare"; 2366 case XD_ERR_IODM: 2367 return "IOPB DMA fatal"; 2368 case XD_ERR_IOAL: 2369 return "IOPB address alignment error"; 2370 case XD_ERR_FIRM: 2371 return "Firmware error"; 2372 case XD_ERR_MMOD: 2373 return "Illegal maintenance mode test number"; 2374 case XD_ERR_ACFL: 2375 return "ACFAIL asserted"; 2376 default: 2377 return "Unknown error"; 2378 } 2379 } 2380
Indexes created Mon Sep 22 05:09:51 GMT 2025