xd.c revision 1.59
1 /* $NetBSD: xd.c,v 1.59 2007/10/08 16:41:08 ad Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x d . c x y l o g i c s 7 5 3 / 7 0 5 3 v m e / s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: &Id: xd.c,v 1.9 1995/09/25 20:12:44 chuck Exp & 40 * started: 27-Feb-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * 46 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 47 * the time to answer some of my questions about the 753/7053. 48 * 49 * note: the 753 and the 7053 are programmed the same way, but are 50 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 51 * VME card (found in many VME based suns). 52 */ 53 54 #include <sys/cdefs.h> 55 __KERNEL_RCSID(0, "$NetBSD: xd.c,v 1.59 2007/10/08 16:41:08 ad Exp $"); 56 57 #undef XDC_DEBUG /* full debug */ 58 #define XDC_DIAG /* extra sanity checks */ 59 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 60 #define XDC_DIAG /* link in with master DIAG option */ 61 #endif 62 63 #include <sys/param.h> 64 #include <sys/proc.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/file.h> 68 #include <sys/stat.h> 69 #include <sys/ioctl.h> 70 #include <sys/buf.h> 71 #include <sys/bufq.h> 72 #include <sys/uio.h> 73 #include <sys/malloc.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/syslog.h> 78 #include <sys/dkbad.h> 79 #include <sys/conf.h> 80 #include <sys/kauth.h> 81 82 #include <uvm/uvm_extern.h> 83 84 #include <machine/autoconf.h> 85 #include <machine/dvma.h> 86 87 #include <dev/sun/disklabel.h> 88 89 #include <sun3/dev/xdreg.h> 90 #include <sun3/dev/xdvar.h> 91 #include <sun3/dev/xio.h> 92 93 #include "locators.h" 94 95 /* 96 * Print a complaint when no xd children were specified 97 * in the config file. Better than a link error... 98 * 99 * XXX: Some folks say this driver should be split in two, 100 * but that seems pointless with ONLY one type of child. 101 */ 102 #include "xd.h" 103 #if NXD == 0 104 #error "xdc but no xd?" 105 #endif 106 107 /* 108 * macros 109 */ 110 111 /* 112 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 113 */ 114 #define XDC_TWAIT(SC, N) { \ 115 (SC)->waitq[(SC)->waitend] = (N); \ 116 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 117 (SC)->nwait++; \ 118 } 119 120 /* 121 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 122 */ 123 #define XDC_HWAIT(SC, N) { \ 124 (SC)->waithead = ((SC)->waithead == 0) ? \ 125 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 126 (SC)->waitq[(SC)->waithead] = (N); \ 127 (SC)->nwait++; \ 128 } 129 130 /* 131 * XDC_GET_WAITER: gets the first request waiting on the waitq 132 * and removes it (so it can be submitted) 133 */ 134 #define XDC_GET_WAITER(XDCSC, RQ) { \ 135 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 136 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 137 xdcsc->nwait--; \ 138 } 139 140 /* 141 * XDC_FREE: add iorq "N" to SC's free list 142 */ 143 #define XDC_FREE(SC, N) { \ 144 (SC)->freereq[(SC)->nfree++] = (N); \ 145 (SC)->reqs[N].mode = 0; \ 146 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 147 } 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 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 160 (ADDR) = ((ADDR) >> 8); \ 161 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 162 (ADDR) = ((ADDR) >> 8); \ 163 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 164 (ADDR) = ((ADDR) >> 8); \ 165 (XDC)->xdc_iopbaddr3 = (ADDR); \ 166 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 167 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 168 } 169 170 /* 171 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 172 * LCV is a counter. If it goes to zero then we timed out. 173 */ 174 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 175 (LCV) = (TIME); \ 176 while ((LCV) > 0) { \ 177 if ((XDC)->xdc_csr & (BITS)) break; \ 178 (LCV) = (LCV) - 1; \ 179 DELAY(1); \ 180 } \ 181 } 182 183 /* 184 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 185 */ 186 #define XDC_DONE(SC,RQ,ER) { \ 187 if ((RQ) == XD_ERR_FAIL) { \ 188 (ER) = (RQ); \ 189 } else { \ 190 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 191 wakeup(&(SC)->ndone); \ 192 (ER) = (SC)->reqs[RQ].errno; \ 193 XDC_FREE((SC), (RQ)); \ 194 } \ 195 } 196 197 /* 198 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 199 */ 200 #define XDC_ADVANCE(IORQ, N) { \ 201 if (N) { \ 202 (IORQ)->sectcnt -= (N); \ 203 (IORQ)->blockno += (N); \ 204 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 205 } \ 206 } 207 208 /* 209 * note - addresses you can sleep on: 210 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 211 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 212 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 213 * to drop below XDC_SUBWAITLIM) 214 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 215 */ 216 217 218 /* 219 * function prototypes 220 * "xdc_*" functions are internal, all others are external interfaces 221 */ 222 223 /* internals */ 224 int xdc_cmd(struct xdc_softc *, int, int, int, int, int, char *, int); 225 const char *xdc_e2str(int); 226 int xdc_error(struct xdc_softc *, struct xd_iorq *, struct xd_iopb *, int, 227 int); 228 int xdc_ioctlcmd(struct xd_softc *, dev_t dev, struct xd_iocmd *); 229 void xdc_perror(struct xd_iorq *, struct xd_iopb *, int); 230 int xdc_piodriver(struct xdc_softc *, int, int); 231 int xdc_remove_iorq(struct xdc_softc *); 232 int xdc_reset(struct xdc_softc *, int, int, int, struct xd_softc *); 233 inline void xdc_rqinit(struct xd_iorq *, struct xdc_softc *, struct xd_softc *, 234 int, u_long, int, void *, struct buf *); 235 void xdc_rqtopb(struct xd_iorq *, struct xd_iopb *, int, int); 236 void xdc_start(struct xdc_softc *, int); 237 int xdc_startbuf(struct xdc_softc *, struct xd_softc *, struct buf *); 238 int xdc_submit_iorq(struct xdc_softc *, int, int); 239 void xdc_tick(void *); 240 void xdc_xdreset(struct xdc_softc *, struct xd_softc *); 241 242 /* machine interrupt hook */ 243 int xdcintr(void *); 244 245 /* autoconf */ 246 static int xdcmatch(struct device *, struct cfdata *, void *); 247 static void xdcattach(struct device *, struct device *, void *); 248 static int xdc_print(void *, const char *); 249 250 static int xdmatch(struct device *, struct cfdata *, void *); 251 static void xdattach(struct device *, struct device *, void *); 252 static void xd_init(struct xd_softc *); 253 254 static void xddummystrat(struct buf *); 255 int xdgetdisklabel(struct xd_softc *, void *); 256 257 /* 258 * cfattach's: device driver interface to autoconfig 259 */ 260 261 CFATTACH_DECL(xdc, sizeof(struct xdc_softc), 262 xdcmatch, xdcattach, NULL, NULL); 263 264 CFATTACH_DECL(xd, sizeof(struct xd_softc), 265 xdmatch, xdattach, NULL, NULL); 266 267 extern struct cfdriver xd_cd; 268 269 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 270 int driveno; /* unit number */ 271 char *dvmabuf; /* scratch buffer for reading disk label */ 272 int fullmode; /* submit mode */ 273 int booting; /* are we booting or not? */ 274 }; 275 276 dev_type_open(xdopen); 277 dev_type_close(xdclose); 278 dev_type_read(xdread); 279 dev_type_write(xdwrite); 280 dev_type_ioctl(xdioctl); 281 dev_type_strategy(xdstrategy); 282 dev_type_dump(xddump); 283 dev_type_size(xdsize); 284 285 const struct bdevsw xd_bdevsw = { 286 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 287 }; 288 289 const struct cdevsw xd_cdevsw = { 290 xdopen, xdclose, xdread, xdwrite, xdioctl, 291 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 292 }; 293 294 /* 295 * dkdriver 296 */ 297 298 struct dkdriver xddkdriver = {xdstrategy}; 299 300 /* 301 * start: disk label fix code (XXX) 302 */ 303 304 static void *xd_labeldata; 305 306 static void 307 xddummystrat(struct buf *bp) 308 { 309 if (bp->b_bcount != XDFM_BPS) 310 panic("xddummystrat"); 311 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 312 bp->b_flags |= B_DONE; 313 bp->b_flags &= ~B_BUSY; 314 } 315 316 int 317 xdgetdisklabel(struct xd_softc *xd, void *b) 318 { 319 const char *err; 320 struct sun_disklabel *sdl; 321 322 /* We already have the label data in `b'; setup for dummy strategy */ 323 xd_labeldata = b; 324 325 /* Required parameter for readdisklabel() */ 326 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 327 328 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xd->sc_dev), RAW_PART), 329 xddummystrat, 330 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 331 if (err) { 332 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 333 return(XD_ERR_FAIL); 334 } 335 336 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 337 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 338 if (sdl->sl_magic == SUN_DKMAGIC) 339 xd->pcyl = sdl->sl_pcyl; 340 else { 341 printf("%s: WARNING: no `pcyl' in disk label.\n", 342 xd->sc_dev.dv_xname); 343 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 344 xd->sc_dk.dk_label->d_acylinders; 345 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 346 xd->sc_dev.dv_xname, xd->pcyl); 347 } 348 349 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 350 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 351 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 352 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 353 xd->sectpercyl = xd->nhead * xd->nsect; 354 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 355 * sun->bsd */ 356 return(XD_ERR_AOK); 357 } 358 359 /* 360 * end: disk label fix code (XXX) 361 */ 362 363 /* 364 * a u t o c o n f i g f u n c t i o n s 365 */ 366 367 /* 368 * xdcmatch: determine if xdc is present or not. we do a 369 * soft reset to detect the xdc. 370 */ 371 372 int 373 xdcmatch(struct device *parent, struct cfdata *cf, void *aux) 374 { 375 struct confargs *ca = aux; 376 377 /* No default VME address. */ 378 if (ca->ca_paddr == -1) 379 return (0); 380 381 /* Make sure something is there... */ 382 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 11, 1) == -1) 383 return (0); 384 385 /* Default interrupt priority. */ 386 if (ca->ca_intpri == -1) 387 ca->ca_intpri = 2; 388 389 return (1); 390 } 391 392 /* 393 * xdcattach: attach controller 394 */ 395 void 396 xdcattach(struct device *parent, struct device *self, void *aux) 397 { 398 struct xdc_softc *xdc = (void *) self; 399 struct confargs *ca = aux; 400 struct xdc_attach_args xa; 401 int lcv, rqno, err; 402 struct xd_iopb_ctrl *ctl; 403 404 /* get addressing and intr level stuff from autoconfig and load it 405 * into our xdc_softc. */ 406 407 xdc->xdc = (struct xdc *) 408 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xdc)); 409 xdc->bustype = ca->ca_bustype; 410 xdc->ipl = ca->ca_intpri; 411 xdc->vector = ca->ca_intvec; 412 413 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 414 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 415 416 /* allocate and zero buffers 417 * 418 * note: we simplify the code by allocating the max number of iopbs and 419 * iorq's up front. thus, we avoid linked lists and the costs 420 * associated with them in exchange for wasting a little memory. */ 421 422 xdc->iopbase = (struct xd_iopb *) 423 dvma_malloc(XDC_MAXIOPB * sizeof(struct xd_iopb)); /* KVA */ 424 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 425 xdc->dvmaiopb = (struct xd_iopb *) 426 dvma_kvtopa(xdc->iopbase, xdc->bustype); 427 xdc->reqs = (struct xd_iorq *) 428 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), M_DEVBUF, M_NOWAIT); 429 if (xdc->reqs == NULL) 430 panic("xdc malloc"); 431 memset(xdc->reqs, 0, XDC_MAXIOPB * sizeof(struct xd_iorq)); 432 433 /* init free list, iorq to iopb pointers, and non-zero fields in the 434 * iopb which never change. */ 435 436 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 437 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 438 xdc->freereq[lcv] = lcv; 439 xdc->iopbase[lcv].fixd = 1; /* always the same */ 440 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 441 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 442 } 443 xdc->nfree = XDC_MAXIOPB; 444 xdc->nrun = 0; 445 xdc->waithead = xdc->waitend = xdc->nwait = 0; 446 xdc->ndone = 0; 447 448 /* init queue of waiting bufs */ 449 450 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 451 callout_init(&xdc->sc_tick_ch, 0); 452 453 /* 454 * section 7 of the manual tells us how to init the controller: 455 * - read controller parameters (6/0) 456 * - write controller parameters (5/0) 457 */ 458 459 /* read controller parameters and insure we have a 753/7053 */ 460 461 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 462 if (rqno == XD_ERR_FAIL) { 463 printf(": couldn't read controller params\n"); 464 return; /* shouldn't ever happen */ 465 } 466 ctl = (struct xd_iopb_ctrl *) & xdc->iopbase[rqno]; 467 if (ctl->ctype != XDCT_753) { 468 if (xdc->reqs[rqno].errno) 469 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 470 printf(": doesn't identify as a 753/7053\n"); 471 XDC_DONE(xdc, rqno, err); 472 return; 473 } 474 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 475 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 476 XDC_DONE(xdc, rqno, err); 477 478 /* now write controller parameters (xdc_cmd sets all params for us) */ 479 480 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 481 XDC_DONE(xdc, rqno, err); 482 if (err) { 483 printf("%s: controller config error: %s\n", 484 xdc->sc_dev.dv_xname, xdc_e2str(err)); 485 return; 486 } 487 488 /* link in interrupt with higher level software */ 489 isr_add_vectored(xdcintr, (void *)xdc, 490 ca->ca_intpri, ca->ca_intvec); 491 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 492 xdc->sc_dev.dv_xname, "intr"); 493 494 /* now we must look for disks using autoconfig */ 495 xa.booting = 1; 496 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 497 (void) config_found(self, (void *) &xa, xdc_print); 498 499 /* start the watchdog clock */ 500 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 501 } 502 503 int 504 xdc_print(void *aux, const char *name) 505 { 506 struct xdc_attach_args *xa = aux; 507 508 if (name != NULL) 509 aprint_normal("%s: ", name); 510 511 if (xa->driveno != -1) 512 aprint_normal(" drive %d", xa->driveno); 513 514 return UNCONF; 515 } 516 517 /* 518 * xdmatch: probe for disk. 519 * 520 * note: we almost always say disk is present. this allows us to 521 * spin up and configure a disk after the system is booted (we can 522 * call xdattach!). Also, wire down the relationship between the 523 * xd* and xdc* devices, to simplify boot device identification. 524 */ 525 int 526 xdmatch(struct device *parent, struct cfdata *cf, void *aux) 527 { 528 struct xdc_attach_args *xa = aux; 529 int xd_unit; 530 531 /* Match only on the "wired-down" controller+disk. */ 532 xd_unit = device_unit(parent) * 2 + xa->driveno; 533 if (cf->cf_unit != xd_unit) 534 return (0); 535 536 return (1); 537 } 538 539 /* 540 * xdattach: attach a disk. 541 */ 542 void 543 xdattach(struct device *parent, struct device *self, void *aux) 544 { 545 struct xd_softc *xd = (void *) self; 546 struct xdc_softc *xdc = (void *) parent; 547 struct xdc_attach_args *xa = aux; 548 549 printf("\n"); 550 551 /* 552 * Always re-initialize the disk structure. We want statistics 553 * to start with a clean slate. 554 */ 555 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 556 disk_init(&xd->sc_dk, xd->sc_dev.dv_xname, &xddkdriver); 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(struct xd_softc *xd) 579 { 580 struct xdc_softc *xdc; 581 struct dkbad *dkb; 582 struct xd_iopb_drive *driopb; 583 void *dvmabuf; 584 int rqno, err, spt, mb, blk, lcv, fullmode, newstate; 585 586 xdc = xd->parent; 587 xd->state = XD_DRIVE_ATTACHING; 588 newstate = XD_DRIVE_UNKNOWN; 589 fullmode = (cold) ? XD_SUB_POLL : XD_SUB_WAIT; 590 dvmabuf = dvma_malloc(XDFM_BPS); 591 592 /* first try and reset the drive */ 593 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fullmode); 594 XDC_DONE(xdc, rqno, err); 595 if (err == XD_ERR_NRDY) { 596 printf("%s: drive %d: off-line\n", 597 xd->sc_dev.dv_xname, xd->xd_drive); 598 goto done; 599 } 600 if (err) { 601 printf("%s: ERROR 0x%02x (%s)\n", 602 xd->sc_dev.dv_xname, err, xdc_e2str(err)); 603 goto done; 604 } 605 printf("%s: drive %d ready\n", 606 xd->sc_dev.dv_xname, xd->xd_drive); 607 608 /* now set format parameters */ 609 610 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 611 0, 0, 0, fullmode); 612 XDC_DONE(xdc, rqno, err); 613 if (err) { 614 printf("%s: write format parameters failed: %s\n", 615 xd->sc_dev.dv_xname, xdc_e2str(err)); 616 goto done; 617 } 618 619 /* get drive parameters */ 620 spt = 0; 621 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 622 0, 0, 0, fullmode); 623 if (rqno != XD_ERR_FAIL) { 624 driopb = (struct xd_iopb_drive *) & xdc->iopbase[rqno]; 625 spt = driopb->sectpertrk; 626 } 627 XDC_DONE(xdc, rqno, err); 628 if (err) { 629 printf("%s: read drive parameters failed: %s\n", 630 xd->sc_dev.dv_xname, xdc_e2str(err)); 631 goto done; 632 } 633 634 /* 635 * now set drive parameters (to semi-bogus values) so we can read the 636 * disk label. 637 */ 638 xd->pcyl = xd->ncyl = 1; 639 xd->acyl = 0; 640 xd->nhead = 1; 641 xd->nsect = 1; 642 xd->sectpercyl = 1; 643 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 644 xd->dkb.bt_bad[lcv].bt_cyl = 645 xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 646 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 647 0, 0, 0, fullmode); 648 XDC_DONE(xdc, rqno, err); 649 if (err) { 650 printf("%s: write drive parameters failed: %s\n", 651 xd->sc_dev.dv_xname, xdc_e2str(err)); 652 goto done; 653 } 654 655 /* read disk label */ 656 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 657 0, 1, dvmabuf, fullmode); 658 XDC_DONE(xdc, rqno, err); 659 if (err) { 660 printf("%s: reading disk label failed: %s\n", 661 xd->sc_dev.dv_xname, xdc_e2str(err)); 662 goto done; 663 } 664 newstate = XD_DRIVE_NOLABEL; 665 666 xd->hw_spt = spt; 667 /* Attach the disk: must be before getdisklabel to malloc label */ 668 disk_attach(&xd->sc_dk); 669 670 if (xdgetdisklabel(xd, dvmabuf) != XD_ERR_AOK) 671 goto done; 672 673 /* inform the user of what is up */ 674 printf("%s: <%s>, pcyl %d, hw_spt %d\n", 675 xd->sc_dev.dv_xname, 676 (char *)dvmabuf, xd->pcyl, spt); 677 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 678 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 679 xd->sc_dev.dv_xname, mb, 680 xd->ncyl, xd->nhead, xd->nsect); 681 682 /* now set the real drive parameters! */ 683 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 684 0, 0, 0, fullmode); 685 XDC_DONE(xdc, rqno, err); 686 if (err) { 687 printf("%s: write real drive parameters failed: %s\n", 688 xd->sc_dev.dv_xname, xdc_e2str(err)); 689 goto done; 690 } 691 newstate = XD_DRIVE_ONLINE; 692 693 /* 694 * read bad144 table. this table resides on the first sector of the 695 * last track of the disk (i.e. second cyl of "acyl" area). 696 */ 697 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 698 (xd->nhead - 1) * xd->nsect; /* last head */ 699 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 700 blk, 1, dvmabuf, fullmode); 701 XDC_DONE(xdc, rqno, err); 702 if (err) { 703 printf("%s: reading bad144 failed: %s\n", 704 xd->sc_dev.dv_xname, xdc_e2str(err)); 705 goto done; 706 } 707 708 /* check dkbad for sanity */ 709 dkb = (struct dkbad *) dvmabuf; 710 for (lcv = 0; lcv < 126; lcv++) { 711 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 712 dkb->bt_bad[lcv].bt_cyl == 0) && 713 dkb->bt_bad[lcv].bt_trksec == 0xffff) 714 continue; /* blank */ 715 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 716 break; 717 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 718 break; 719 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 720 break; 721 } 722 if (lcv != 126) { 723 printf("%s: warning: invalid bad144 sector!\n", 724 xd->sc_dev.dv_xname); 725 } else { 726 memcpy(&xd->dkb, dvmabuf, XDFM_BPS); 727 } 728 729 done: 730 xd->state = newstate; 731 dvma_free(dvmabuf, XDFM_BPS); 732 } 733 734 /* 735 * { b , c } d e v s w f u n c t i o n s 736 */ 737 738 /* 739 * xdclose: close device 740 */ 741 int 742 xdclose(dev_t dev, int flag, int fmt, struct lwp *l) 743 { 744 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 745 int part = DISKPART(dev); 746 747 /* clear mask bits */ 748 749 switch (fmt) { 750 case S_IFCHR: 751 xd->sc_dk.dk_copenmask &= ~(1 << part); 752 break; 753 case S_IFBLK: 754 xd->sc_dk.dk_bopenmask &= ~(1 << part); 755 break; 756 } 757 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 758 759 return 0; 760 } 761 762 /* 763 * xddump: crash dump system 764 */ 765 int 766 xddump(dev_t dev, daddr_t blkno, void *va, size_t sz) 767 { 768 int unit, part; 769 struct xd_softc *xd; 770 771 unit = DISKUNIT(dev); 772 if (unit >= xd_cd.cd_ndevs) 773 return ENXIO; 774 part = DISKPART(dev); 775 776 xd = xd_cd.cd_devs[unit]; 777 778 printf("%s%c: crash dump not supported (yet)\n", 779 xd->sc_dev.dv_xname, 'a' + part); 780 781 return ENXIO; 782 783 /* outline: globals: "dumplo" == sector number of partition to start 784 * dump at (convert to physical sector with partition table) 785 * "dumpsize" == size of dump in clicks "physmem" == size of physical 786 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 787 * physmem) 788 * 789 * dump a copy of physical memory to the dump device starting at sector 790 * "dumplo" in the swap partition (make sure > 0). map in pages as 791 * we go. use polled I/O. 792 * 793 * XXX how to handle NON_CONTIG? 794 */ 795 } 796 797 /* 798 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 799 */ 800 int 801 xdioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 802 { 803 struct xd_softc *xd; 804 struct xd_iocmd *xio; 805 int error, s, unit; 806 807 unit = DISKUNIT(dev); 808 809 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 810 return (ENXIO); 811 812 /* switch on ioctl type */ 813 814 switch (command) { 815 case DIOCSBAD: /* set bad144 info */ 816 if ((flag & FWRITE) == 0) 817 return EBADF; 818 s = splbio(); 819 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 820 splx(s); 821 return 0; 822 823 case DIOCGDINFO: /* get disk label */ 824 memcpy(addr, xd->sc_dk.dk_label, sizeof(struct disklabel)); 825 return 0; 826 827 case DIOCGPART: /* get partition info */ 828 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 829 ((struct partinfo *) addr)->part = 830 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 831 return 0; 832 833 case DIOCSDINFO: /* set disk label */ 834 if ((flag & FWRITE) == 0) 835 return EBADF; 836 error = setdisklabel(xd->sc_dk.dk_label, 837 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 838 xd->sc_dk.dk_cpulabel); 839 if (error == 0) { 840 if (xd->state == XD_DRIVE_NOLABEL) 841 xd->state = XD_DRIVE_ONLINE; 842 } 843 return error; 844 845 case DIOCWLABEL: /* change write status of disk label */ 846 if ((flag & FWRITE) == 0) 847 return EBADF; 848 if (*(int *) addr) 849 xd->flags |= XD_WLABEL; 850 else 851 xd->flags &= ~XD_WLABEL; 852 return 0; 853 854 case DIOCWDINFO: /* write disk label */ 855 if ((flag & FWRITE) == 0) 856 return EBADF; 857 error = setdisklabel(xd->sc_dk.dk_label, 858 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 859 xd->sc_dk.dk_cpulabel); 860 if (error == 0) { 861 if (xd->state == XD_DRIVE_NOLABEL) 862 xd->state = XD_DRIVE_ONLINE; 863 864 /* Simulate opening partition 0 so write succeeds. */ 865 xd->sc_dk.dk_openmask |= (1 << 0); 866 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 867 xdstrategy, xd->sc_dk.dk_label, 868 xd->sc_dk.dk_cpulabel); 869 xd->sc_dk.dk_openmask = 870 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 871 } 872 return error; 873 874 case DIOSXDCMD: 875 xio = (struct xd_iocmd *) addr; 876 if ((error = kauth_authorize_generic(l->l_cred, 877 KAUTH_GENERIC_ISSUSER, NULL)) != 0) 878 return (error); 879 return (xdc_ioctlcmd(xd, dev, xio)); 880 881 default: 882 return ENOTTY; 883 } 884 } 885 886 /* 887 * xdopen: open drive 888 */ 889 int 890 xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 891 { 892 int err, unit, part, s; 893 struct xd_softc *xd; 894 895 /* first, could it be a valid target? */ 896 unit = DISKUNIT(dev); 897 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 898 return (ENXIO); 899 part = DISKPART(dev); 900 err = 0; 901 902 /* 903 * If some other processing is doing init, sleep. 904 */ 905 s = splbio(); 906 while (xd->state == XD_DRIVE_ATTACHING) { 907 if (tsleep(&xd->state, PRIBIO, "xdopen", 0)) { 908 err = EINTR; 909 goto done; 910 } 911 } 912 /* Do we need to init the drive? */ 913 if (xd->state == XD_DRIVE_UNKNOWN) { 914 xd_init(xd); 915 wakeup(&xd->state); 916 } 917 /* Was the init successful? */ 918 if (xd->state == XD_DRIVE_UNKNOWN) { 919 err = EIO; 920 goto done; 921 } 922 923 /* check for partition */ 924 if (part != RAW_PART && 925 (part >= xd->sc_dk.dk_label->d_npartitions || 926 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 927 err = ENXIO; 928 goto done; 929 } 930 931 /* set open masks */ 932 switch (fmt) { 933 case S_IFCHR: 934 xd->sc_dk.dk_copenmask |= (1 << part); 935 break; 936 case S_IFBLK: 937 xd->sc_dk.dk_bopenmask |= (1 << part); 938 break; 939 } 940 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 941 942 done: 943 splx(s); 944 return (err); 945 } 946 947 int 948 xdread(dev_t dev, struct uio *uio, int flags) 949 { 950 951 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 952 } 953 954 int 955 xdwrite(dev_t dev, struct uio *uio, int flags) 956 { 957 958 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 959 } 960 961 962 /* 963 * xdsize: return size of a partition for a dump 964 */ 965 int 966 xdsize(dev_t dev) 967 { 968 struct xd_softc *xdsc; 969 int unit, part, size, omask; 970 971 /* valid unit? */ 972 unit = DISKUNIT(dev); 973 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 974 return (-1); 975 976 part = DISKPART(dev); 977 omask = xdsc->sc_dk.dk_openmask & (1 << part); 978 979 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 980 return (-1); 981 982 /* do it */ 983 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 984 size = -1; /* only give valid size for swap partitions */ 985 else 986 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 987 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 988 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 989 return (-1); 990 return (size); 991 } 992 993 /* 994 * xdstrategy: buffering system interface to xd. 995 */ 996 void 997 xdstrategy(struct buf *bp) 998 { 999 struct xd_softc *xd; 1000 struct xdc_softc *parent; 1001 int s, unit; 1002 1003 unit = DISKUNIT(bp->b_dev); 1004 1005 /* check for live device */ 1006 1007 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1008 bp->b_blkno < 0 || 1009 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1010 bp->b_error = EINVAL; 1011 goto done; 1012 } 1013 1014 /* There should always be an open first. */ 1015 if (xd->state == XD_DRIVE_UNKNOWN) { 1016 bp->b_error = EIO; 1017 goto done; 1018 } 1019 1020 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1021 /* no I/O to unlabeled disks, unless raw partition */ 1022 bp->b_error = EIO; 1023 goto done; 1024 } 1025 /* short circuit zero length request */ 1026 1027 if (bp->b_bcount == 0) 1028 goto done; 1029 1030 /* check bounds with label (disksubr.c). Determine the size of the 1031 * transfer, and make sure it is within the boundaries of the 1032 * partition. Adjust transfer if needed, and signal errors or early 1033 * completion. */ 1034 1035 if (bounds_check_with_label(&xd->sc_dk, bp, 1036 (xd->flags & XD_WLABEL) != 0) <= 0) 1037 goto done; 1038 1039 /* 1040 * now we know we have a valid buf structure that we need to do I/O 1041 * on. 1042 * 1043 * note that we don't disksort because the controller has a sorting 1044 * algorithm built into the hardware. 1045 */ 1046 1047 s = splbio(); /* protect the queues */ 1048 1049 /* first, give jobs in front of us a chance */ 1050 parent = xd->parent; 1051 while (parent->nfree > 0 && BUFQ_PEEK(parent->sc_wq) != NULL) 1052 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1053 break; 1054 1055 /* 1056 * if there are no free iorq's, then we just queue and return. the 1057 * buffs will get picked up later by xdcintr(). 1058 */ 1059 if (parent->nfree == 0) { 1060 BUFQ_PUT(parent->sc_wq, bp); 1061 splx(s); 1062 return; 1063 } 1064 1065 /* now we have free iopb's and we are at splbio... start 'em up */ 1066 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1067 return; 1068 } 1069 1070 /* done! */ 1071 1072 splx(s); 1073 return; 1074 1075 done: /* tells upper layers we are done with this 1076 * buf */ 1077 bp->b_resid = bp->b_bcount; 1078 biodone(bp); 1079 } 1080 /* 1081 * end of {b,c}devsw functions 1082 */ 1083 1084 /* 1085 * i n t e r r u p t f u n c t i o n 1086 * 1087 * xdcintr: hardware interrupt. 1088 */ 1089 int 1090 xdcintr(void *v) 1091 { 1092 struct xdc_softc *xdcsc = v; 1093 1094 /* kick the event counter */ 1095 xdcsc->sc_intrcnt.ev_count++; 1096 1097 /* remove as many done IOPBs as possible */ 1098 xdc_remove_iorq(xdcsc); 1099 1100 /* start any iorq's already waiting */ 1101 xdc_start(xdcsc, XDC_MAXIOPB); 1102 1103 /* fill up any remaining iorq's with queue'd buffers */ 1104 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1105 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1106 break; 1107 1108 return (1); 1109 } 1110 /* 1111 * end of interrupt function 1112 */ 1113 1114 /* 1115 * i n t e r n a l f u n c t i o n s 1116 */ 1117 1118 /* 1119 * xdc_rqinit: fill out the fields of an I/O request 1120 */ 1121 1122 inline void 1123 xdc_rqinit(struct xd_iorq *rq, struct xdc_softc *xdc, struct xd_softc *xd, 1124 int md, u_long blk, int cnt, void *db, struct buf *bp) 1125 { 1126 rq->xdc = xdc; 1127 rq->xd = xd; 1128 rq->ttl = XDC_MAXTTL + 10; 1129 rq->mode = md; 1130 rq->tries = rq->errno = rq->lasterror = 0; 1131 rq->blockno = blk; 1132 rq->sectcnt = cnt; 1133 rq->dbuf = rq->dbufbase = db; 1134 rq->buf = bp; 1135 } 1136 1137 /* 1138 * xdc_rqtopb: load up an IOPB based on an iorq 1139 */ 1140 void 1141 xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1142 { 1143 u_long block, dp; 1144 1145 /* standard stuff */ 1146 1147 iopb->errs = iopb->done = 0; 1148 iopb->comm = cmd; 1149 iopb->errno = iopb->status = 0; 1150 iopb->subfun = subfun; 1151 if (iorq->xd) 1152 iopb->unit = iorq->xd->xd_drive; 1153 else 1154 iopb->unit = 0; 1155 1156 /* check for alternate IOPB format */ 1157 1158 if (cmd == XDCMD_WRP) { 1159 switch (subfun) { 1160 case XDFUN_CTL:{ 1161 struct xd_iopb_ctrl *ctrl = 1162 (struct xd_iopb_ctrl *) iopb; 1163 iopb->lll = 0; 1164 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1165 ? 0 1166 : iorq->xdc->ipl; 1167 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1168 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1169 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1170 XDPC_RBC | XDPC_ECC2; 1171 ctrl->throttle = XDC_THROTTLE; 1172 #ifdef sparc 1173 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 1174 ctrl->delay = XDC_DELAY_4_300; 1175 else 1176 ctrl->delay = XDC_DELAY_SPARC; 1177 #endif 1178 #ifdef sun3 1179 ctrl->delay = XDC_DELAY_SUN3; 1180 #endif 1181 break; 1182 } 1183 case XDFUN_DRV:{ 1184 struct xd_iopb_drive *drv = 1185 (struct xd_iopb_drive *)iopb; 1186 /* we assume that the disk label has the right 1187 * info */ 1188 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1189 drv->dparam_ipl = (XDC_DPARAM << 3); 1190 else 1191 drv->dparam_ipl = (XDC_DPARAM << 3) | 1192 iorq->xdc->ipl; 1193 drv->maxsect = iorq->xd->nsect - 1; 1194 drv->maxsector = drv->maxsect; 1195 /* note: maxsector != maxsect only if you are 1196 * doing cyl sparing */ 1197 drv->headoff = 0; 1198 drv->maxcyl = iorq->xd->pcyl - 1; 1199 drv->maxhead = iorq->xd->nhead - 1; 1200 break; 1201 } 1202 case XDFUN_FMT:{ 1203 struct xd_iopb_format *form = 1204 (struct xd_iopb_format *) iopb; 1205 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1206 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1207 else 1208 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1209 iorq->xdc->ipl; 1210 form->field1 = XDFM_FIELD1; 1211 form->field2 = XDFM_FIELD2; 1212 form->field3 = XDFM_FIELD3; 1213 form->field4 = XDFM_FIELD4; 1214 form->bytespersec = XDFM_BPS; 1215 form->field6 = XDFM_FIELD6; 1216 form->field7 = XDFM_FIELD7; 1217 break; 1218 } 1219 } 1220 } else { 1221 1222 /* normal IOPB case (harmless to RDP command) */ 1223 1224 iopb->lll = 0; 1225 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1226 ? 0 1227 : iorq->xdc->ipl; 1228 iopb->sectcnt = iorq->sectcnt; 1229 block = iorq->blockno; 1230 if (iorq->xd == NULL || block == 0) { 1231 iopb->sectno = iopb->headno = iopb->cylno = 0; 1232 } else { 1233 iopb->sectno = block % iorq->xd->nsect; 1234 block = block / iorq->xd->nsect; 1235 iopb->headno = block % iorq->xd->nhead; 1236 block = block / iorq->xd->nhead; 1237 iopb->cylno = block; 1238 } 1239 iopb->daddr = dp = (iorq->dbuf == NULL) ? 0 : 1240 dvma_kvtopa(iorq->dbuf, iorq->xdc->bustype); 1241 iopb->addrmod = XDC_ADDRMOD; 1242 } 1243 } 1244 1245 /* 1246 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1247 * If you've already got an IORQ, you can call submit directly (currently 1248 * there is no need to do this). NORM requests are handled separately. 1249 */ 1250 int 1251 xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1252 int scnt, char *dptr, int fullmode) 1253 { 1254 struct xd_iorq *iorq; 1255 struct xd_iopb *iopb; 1256 int rqno, retry; 1257 int submode = XD_STATE(fullmode); 1258 1259 /* get iorq/iopb */ 1260 switch (submode) { 1261 case XD_SUB_POLL: 1262 while (xdcsc->nfree == 0) { 1263 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1264 return (XD_ERR_FAIL); 1265 } 1266 break; 1267 case XD_SUB_WAIT: 1268 retry = 1; 1269 while (retry) { 1270 while (xdcsc->nfree == 0) { 1271 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1272 return (XD_ERR_FAIL); 1273 } 1274 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1275 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1276 return (XD_ERR_FAIL); 1277 } 1278 if (xdcsc->nfree) 1279 retry = 0; /* got it */ 1280 } 1281 break; 1282 default: 1283 return (XD_ERR_FAIL); /* illegal */ 1284 } 1285 if (xdcsc->nfree == 0) 1286 panic("xdcmd nfree"); 1287 rqno = XDC_RQALLOC(xdcsc); 1288 iorq = &xdcsc->reqs[rqno]; 1289 iopb = iorq->iopb; 1290 1291 1292 /* init iorq/iopb */ 1293 xdc_rqinit(iorq, xdcsc, 1294 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1295 fullmode, block, scnt, dptr, NULL); 1296 1297 /* load IOPB from iorq */ 1298 xdc_rqtopb(iorq, iopb, cmd, subfn); 1299 1300 /* submit it for processing */ 1301 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1302 1303 return (rqno); 1304 } 1305 1306 /* 1307 * xdc_startbuf 1308 * start a buffer running, assumes nfree > 0 1309 */ 1310 int 1311 xdc_startbuf(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1312 { 1313 int rqno, partno; 1314 struct xd_iorq *iorq; 1315 struct xd_iopb *iopb; 1316 u_long block; 1317 void *dbuf; 1318 1319 if (!xdcsc->nfree) 1320 panic("xdc_startbuf free"); 1321 rqno = XDC_RQALLOC(xdcsc); 1322 iorq = &xdcsc->reqs[rqno]; 1323 iopb = iorq->iopb; 1324 1325 /* get buf */ 1326 1327 if (bp == NULL) { 1328 bp = BUFQ_GET(xdcsc->sc_wq); 1329 if (bp == NULL) 1330 panic("xdc_startbuf bp"); 1331 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1332 } 1333 partno = DISKPART(bp->b_dev); 1334 #ifdef XDC_DEBUG 1335 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1336 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1337 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1338 bp->b_bcount, bp->b_data); 1339 #endif 1340 1341 /* 1342 * load request. we have to calculate the correct block number based 1343 * on partition info. 1344 * 1345 * also, note that there are two kinds of buf structures, those with 1346 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1347 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1348 * buffer which has already been mapped into DVMA space. (Not on sun3) 1349 * However, if B_PHYS is not set, then the buffer is a normal system 1350 * buffer which does *not* live in DVMA space. In that case we call 1351 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1352 * 1353 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1354 * as mapped into DVMA space, where as the bp->b_data points to its 1355 * non-DVMA mapping. 1356 * 1357 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1358 * into dvma space, only that it was remapped into the kernel. 1359 * We ALWAYS have to remap the kernel buf into DVMA space. 1360 * (It is done inexpensively, using whole segments!) 1361 */ 1362 1363 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1364 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1365 1366 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1367 if (dbuf == NULL) { /* out of DVMA space */ 1368 printf("%s: warning: out of DVMA space\n", 1369 xdcsc->sc_dev.dv_xname); 1370 XDC_FREE(xdcsc, rqno); 1371 BUFQ_PUT(xdcsc->sc_wq, bp); 1372 return (XD_ERR_FAIL); /* XXX: need some sort of 1373 * call-back scheme here? */ 1374 } 1375 1376 /* init iorq and load iopb from it */ 1377 1378 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1379 bp->b_bcount / XDFM_BPS, dbuf, bp); 1380 1381 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1382 1383 /* Instrumentation. */ 1384 disk_busy(&xdsc->sc_dk); 1385 1386 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1387 1388 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1389 return (XD_ERR_AOK); 1390 } 1391 1392 1393 /* 1394 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1395 * if ok. if it fail returns an error code. type is XD_SUB_*. 1396 * 1397 * note: caller frees iorq in all cases except NORM 1398 * 1399 * return value: 1400 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1401 * WAIT: XD_AOK (success), <error-code> (failed) 1402 * POLL: <same as WAIT> 1403 * NOQ : <same as NORM> 1404 * 1405 * there are three sources for i/o requests: 1406 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1407 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1408 * [3] open/ioctl: these are I/O requests done in the context of a process, 1409 * and the process should block until they are done. 1410 * 1411 * software state is stored in the iorq structure. each iorq has an 1412 * iopb structure. the hardware understands the iopb structure. 1413 * every command must go through an iopb. a 7053 can only handle 1414 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1415 * DVMA space at boot up time. what happens if we run out of iopb's? 1416 * for i/o type [1], the buffers are queued at the "buff" layer and 1417 * picked up later by the interrupt routine. for case [2] the 1418 * programmed i/o driver is called with a special flag that says 1419 * return when one iopb is free. for case [3] the process can sleep 1420 * on the iorq free list until some iopbs are available. 1421 */ 1422 1423 int 1424 xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1425 { 1426 u_long iopbaddr; 1427 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1428 1429 #ifdef XDC_DEBUG 1430 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1431 iorqno, type); 1432 #endif 1433 1434 /* first check and see if controller is busy */ 1435 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1436 #ifdef XDC_DEBUG 1437 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1438 #endif 1439 if (type == XD_SUB_NOQ) 1440 return (XD_ERR_FAIL); /* failed */ 1441 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1442 switch (type) { 1443 case XD_SUB_NORM: 1444 return XD_ERR_AOK; /* success */ 1445 case XD_SUB_WAIT: 1446 while (iorq->iopb->done == 0) { 1447 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1448 } 1449 return (iorq->errno); 1450 case XD_SUB_POLL: 1451 return (xdc_piodriver(xdcsc, iorqno, 0)); 1452 default: 1453 panic("xdc_submit_iorq adding"); 1454 } 1455 } 1456 #ifdef XDC_DEBUG 1457 { 1458 u_char *rio = (u_char *) iorq->iopb; 1459 int sz = sizeof(struct xd_iopb), lcv; 1460 printf("%s: aio #%d [", 1461 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1462 for (lcv = 0; lcv < sz; lcv++) 1463 printf(" %02x", rio[lcv]); 1464 printf("]\n"); 1465 } 1466 #endif /* XDC_DEBUG */ 1467 1468 /* controller not busy, start command */ 1469 iopbaddr = dvma_kvtopa(iorq->iopb, xdcsc->bustype); 1470 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1471 xdcsc->nrun++; 1472 /* command now running, wrap it up */ 1473 switch (type) { 1474 case XD_SUB_NORM: 1475 case XD_SUB_NOQ: 1476 return (XD_ERR_AOK); /* success */ 1477 case XD_SUB_WAIT: 1478 while (iorq->iopb->done == 0) { 1479 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1480 } 1481 return (iorq->errno); 1482 case XD_SUB_POLL: 1483 return (xdc_piodriver(xdcsc, iorqno, 0)); 1484 default: 1485 panic("xdc_submit_iorq wrap up"); 1486 } 1487 panic("xdc_submit_iorq"); 1488 return 0; /* not reached */ 1489 } 1490 1491 1492 /* 1493 * xdc_piodriver 1494 * 1495 * programmed i/o driver. this function takes over the computer 1496 * and drains off all i/o requests. it returns the status of the iorq 1497 * the caller is interesting in. if freeone is true, then it returns 1498 * when there is a free iorq. 1499 */ 1500 int 1501 xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 1502 { 1503 int nreset = 0; 1504 int retval = 0; 1505 u_long count; 1506 struct xdc *xdc = xdcsc->xdc; 1507 #ifdef XDC_DEBUG 1508 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1509 iorqno, freeone); 1510 #endif 1511 1512 while (xdcsc->nwait || xdcsc->nrun) { 1513 #ifdef XDC_DEBUG 1514 printf("xdc_piodriver: wait=%d, run=%d\n", 1515 xdcsc->nwait, xdcsc->nrun); 1516 #endif 1517 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1518 #ifdef XDC_DEBUG 1519 printf("xdc_piodriver: done wait with count = %d\n", count); 1520 #endif 1521 /* we expect some progress soon */ 1522 if (count == 0 && nreset >= 2) { 1523 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1524 #ifdef XDC_DEBUG 1525 printf("xdc_piodriver: timeout\n"); 1526 #endif 1527 return (XD_ERR_FAIL); 1528 } 1529 if (count == 0) { 1530 if (xdc_reset(xdcsc, 0, 1531 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1532 XD_ERR_FAIL, 1533 0) == XD_ERR_FAIL) 1534 return (XD_ERR_FAIL); /* flushes all but POLL 1535 * requests, resets */ 1536 continue; 1537 } 1538 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1539 if (freeone) { 1540 if (xdcsc->nrun < XDC_MAXIOPB) { 1541 #ifdef XDC_DEBUG 1542 printf("xdc_piodriver: done: one free\n"); 1543 #endif 1544 return (XD_ERR_AOK); 1545 } 1546 continue; /* don't xdc_start */ 1547 } 1548 xdc_start(xdcsc, XDC_MAXIOPB); 1549 } 1550 1551 /* get return value */ 1552 1553 retval = xdcsc->reqs[iorqno].errno; 1554 1555 #ifdef XDC_DEBUG 1556 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1557 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1558 #endif 1559 1560 /* now that we've drained everything, start up any bufs that have 1561 * queued */ 1562 1563 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1564 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1565 break; 1566 1567 return (retval); 1568 } 1569 1570 /* 1571 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1572 * we steal iopb[0] for this, but we put it back when we are done. 1573 */ 1574 void 1575 xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1576 { 1577 struct xd_iopb tmpiopb; 1578 u_long addr; 1579 int del; 1580 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1581 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1582 xdcsc->iopbase->comm = XDCMD_RST; 1583 xdcsc->iopbase->unit = xdsc->xd_drive; 1584 addr = (u_long) xdcsc->dvmaiopb; 1585 XDC_GO(xdcsc->xdc, addr); /* go! */ 1586 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1587 if (del <= 0 || xdcsc->iopbase->errs) { 1588 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1589 xdc_e2str(xdcsc->iopbase->errno)); 1590 xdcsc->xdc->xdc_csr = XDC_RESET; 1591 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1592 if (del <= 0) 1593 panic("xdc_reset"); 1594 } else { 1595 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1596 } 1597 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1598 } 1599 1600 1601 /* 1602 * xdc_reset: reset everything: requests are marked as errors except 1603 * a polled request (which is resubmitted) 1604 */ 1605 int 1606 xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1607 struct xd_softc *xdsc) 1608 { 1609 int del = 0, lcv, retval = XD_ERR_AOK; 1610 int oldfree = xdcsc->nfree; 1611 struct xd_iorq *iorq; 1612 1613 /* soft reset hardware */ 1614 1615 if (!quiet) 1616 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1617 xdcsc->xdc->xdc_csr = XDC_RESET; 1618 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1619 if (del <= 0) { 1620 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1621 retval = XD_ERR_FAIL; 1622 } 1623 if (xdsc) 1624 xdc_xdreset(xdcsc, xdsc); 1625 1626 /* fix queues based on "blast-mode" */ 1627 1628 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1629 iorq = &xdcsc->reqs[lcv]; 1630 1631 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1632 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1633 XD_STATE(iorq->mode) != XD_SUB_NORM) 1634 /* is it active? */ 1635 continue; 1636 1637 xdcsc->nrun--; /* it isn't running any more */ 1638 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1639 /* failed */ 1640 iorq->errno = error; 1641 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1642 switch (XD_STATE(iorq->mode)) { 1643 case XD_SUB_NORM: 1644 iorq->buf->b_error = EIO; 1645 iorq->buf->b_resid = 1646 iorq->sectcnt * XDFM_BPS; 1647 /* Sun3: map/unmap regardless of B_PHYS */ 1648 dvma_mapout(iorq->dbufbase, 1649 iorq->buf->b_bcount); 1650 disk_unbusy(&iorq->xd->sc_dk, 1651 (iorq->buf->b_bcount - iorq->buf->b_resid), 1652 (iorq->buf->b_flags & B_READ)); 1653 biodone(iorq->buf); 1654 XDC_FREE(xdcsc, lcv); /* add to free list */ 1655 break; 1656 case XD_SUB_WAIT: 1657 wakeup(iorq); 1658 case XD_SUB_POLL: 1659 xdcsc->ndone++; 1660 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1661 break; 1662 } 1663 1664 } else { 1665 1666 /* resubmit, put at front of wait queue */ 1667 XDC_HWAIT(xdcsc, lcv); 1668 } 1669 } 1670 1671 /* 1672 * now, if stuff is waiting, start it. 1673 * since we just reset it should go 1674 */ 1675 xdc_start(xdcsc, XDC_MAXIOPB); 1676 1677 /* ok, we did it */ 1678 if (oldfree == 0 && xdcsc->nfree) 1679 wakeup(&xdcsc->nfree); 1680 1681 #ifdef XDC_DIAG 1682 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1683 if (del != XDC_MAXIOPB) 1684 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1685 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1686 else 1687 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1688 printf("%s: diag: lots of done jobs (%d)\n", 1689 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1690 #endif 1691 printf("RESET DONE\n"); 1692 return (retval); 1693 } 1694 1695 /* 1696 * xdc_start: start all waiting buffers 1697 */ 1698 void 1699 xdc_start(struct xdc_softc *xdcsc, int maxio) 1700 { 1701 int rqno; 1702 while (maxio && xdcsc->nwait && 1703 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1704 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1705 * param */ 1706 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1707 panic("xdc_start"); /* should never happen */ 1708 maxio--; 1709 } 1710 } 1711 1712 /* 1713 * xdc_remove_iorq: remove "done" IOPB's. 1714 */ 1715 int 1716 xdc_remove_iorq(struct xdc_softc *xdcsc) 1717 { 1718 int errno, rqno, comm, errs; 1719 struct xdc *xdc = xdcsc->xdc; 1720 struct xd_iopb *iopb; 1721 struct xd_iorq *iorq; 1722 struct buf *bp; 1723 1724 if (xdc->xdc_csr & XDC_F_ERROR) { 1725 /* 1726 * FATAL ERROR: should never happen under normal use. This 1727 * error is so bad, you can't even tell which IOPB is bad, so 1728 * we dump them all. 1729 */ 1730 errno = xdc->xdc_f_err; 1731 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 1732 errno, xdc_e2str(errno)); 1733 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 1734 printf("%s: soft reset failed!\n", 1735 xdcsc->sc_dev.dv_xname); 1736 panic("xdc_remove_iorq: controller DEAD"); 1737 } 1738 return (XD_ERR_AOK); 1739 } 1740 1741 /* 1742 * get iopb that is done 1743 * 1744 * hmm... I used to read the address of the done IOPB off the VME 1745 * registers and calculate the rqno directly from that. that worked 1746 * until I started putting a load on the controller. when loaded, i 1747 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1748 * be set, even after DELAY'ing a while! later on the timeout 1749 * routine would detect IOPBs that were marked "running" but their 1750 * "done" bit was set. rather than dealing directly with this 1751 * problem, it is just easier to look at all running IOPB's for the 1752 * done bit. 1753 */ 1754 if (xdc->xdc_csr & XDC_REMIOPB) { 1755 xdc->xdc_csr = XDC_CLRRIO; 1756 } 1757 1758 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1759 iorq = &xdcsc->reqs[rqno]; 1760 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1761 continue; /* free, or done */ 1762 iopb = &xdcsc->iopbase[rqno]; 1763 if (iopb->done == 0) 1764 continue; /* not done yet */ 1765 1766 #ifdef XDC_DEBUG 1767 { 1768 u_char *rio = (u_char *) iopb; 1769 int sz = sizeof(struct xd_iopb), lcv; 1770 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 1771 for (lcv = 0; lcv < sz; lcv++) 1772 printf(" %02x", rio[lcv]); 1773 printf("]\n"); 1774 } 1775 #endif /* XDC_DEBUG */ 1776 1777 xdcsc->nrun--; 1778 1779 comm = iopb->comm; 1780 errs = iopb->errs; 1781 1782 if (errs) 1783 iorq->errno = iopb->errno; 1784 else 1785 iorq->errno = 0; 1786 1787 /* handle non-fatal errors */ 1788 1789 if (errs && 1790 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 1791 continue; /* AOK: we resubmitted it */ 1792 1793 1794 /* this iorq is now done (hasn't been restarted or anything) */ 1795 1796 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 1797 xdc_perror(iorq, iopb, 0); 1798 1799 /* now, if read/write check to make sure we got all the data 1800 * we needed. (this may not be the case if we got an error in 1801 * the middle of a multisector request). */ 1802 1803 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 1804 (comm == XDCMD_RD || comm == XDCMD_WR)) { 1805 /* we just successfully processed a bad144 sector 1806 * note: if we are in bad 144 mode, the pointers have 1807 * been advanced already (see above) and are pointing 1808 * at the bad144 sector. to exit bad144 mode, we 1809 * must advance the pointers 1 sector and issue a new 1810 * request if there are still sectors left to process 1811 * 1812 */ 1813 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 1814 1815 /* exit b144 mode */ 1816 iorq->mode = iorq->mode & (~XD_MODE_B144); 1817 1818 if (iorq->sectcnt) { /* more to go! */ 1819 iorq->lasterror = iorq->errno = iopb->errno = 0; 1820 iopb->errs = iopb->done = 0; 1821 iorq->tries = 0; 1822 iopb->sectcnt = iorq->sectcnt; 1823 iopb->cylno = iorq->blockno / 1824 iorq->xd->sectpercyl; 1825 iopb->headno = 1826 (iorq->blockno / iorq->xd->nhead) % 1827 iorq->xd->nhead; 1828 iopb->sectno = iorq->blockno % XDFM_BPS; 1829 iopb->daddr = 1830 dvma_kvtopa(iorq->dbuf, xdcsc->bustype); 1831 XDC_HWAIT(xdcsc, rqno); 1832 xdc_start(xdcsc, 1); /* resubmit */ 1833 continue; 1834 } 1835 } 1836 /* final cleanup, totally done with this request */ 1837 1838 switch (XD_STATE(iorq->mode)) { 1839 case XD_SUB_NORM: 1840 bp = iorq->buf; 1841 if (errs) { 1842 bp->b_error = EIO; 1843 bp->b_resid = iorq->sectcnt * XDFM_BPS; 1844 } else { 1845 bp->b_resid = 0; /* done */ 1846 } 1847 /* Sun3: map/unmap regardless of B_PHYS */ 1848 dvma_mapout(iorq->dbufbase, 1849 iorq->buf->b_bcount); 1850 disk_unbusy(&iorq->xd->sc_dk, 1851 (bp->b_bcount - bp->b_resid), 1852 (bp->b_flags & B_READ)); 1853 XDC_FREE(xdcsc, rqno); 1854 biodone(bp); 1855 break; 1856 case XD_SUB_WAIT: 1857 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1858 xdcsc->ndone++; 1859 wakeup(iorq); 1860 break; 1861 case XD_SUB_POLL: 1862 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1863 xdcsc->ndone++; 1864 break; 1865 } 1866 } 1867 1868 return (XD_ERR_AOK); 1869 } 1870 1871 /* 1872 * xdc_perror: print error. 1873 * - if still_trying is true: we got an error, retried and got a 1874 * different error. in that case lasterror is the old error, 1875 * and errno is the new one. 1876 * - if still_trying is not true, then if we ever had an error it 1877 * is in lasterror. also, if iorq->errno == 0, then we recovered 1878 * from that error (otherwise iorq->errno == iorq->lasterror). 1879 */ 1880 void 1881 xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 1882 { 1883 1884 int error = iorq->lasterror; 1885 1886 printf("%s", (iorq->xd) ? 1887 iorq->xd->sc_dev.dv_xname : 1888 iorq->xdc->sc_dev.dv_xname); 1889 if (iorq->buf) 1890 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1891 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 1892 printf("%s %d/%d/%d: ", 1893 (iopb->comm == XDCMD_RD) ? "read" : "write", 1894 iopb->cylno, iopb->headno, iopb->sectno); 1895 printf("%s", xdc_e2str(error)); 1896 1897 if (still_trying) 1898 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 1899 else 1900 if (iorq->errno == 0) 1901 printf(" [recovered in %d tries]", iorq->tries); 1902 1903 printf("\n"); 1904 } 1905 1906 /* 1907 * xdc_error: non-fatal error encountered... recover. 1908 * return AOK if resubmitted, return FAIL if this iopb is done 1909 */ 1910 int 1911 xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 1912 int rqno, int comm) 1913 1914 { 1915 int errno = iorq->errno; 1916 int erract = errno & XD_ERA_MASK; 1917 int oldmode, advance, i; 1918 1919 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 1920 oldmode = iorq->mode; 1921 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 1922 xdcsc->ndone++; 1923 /* make xdc_start ignore us */ 1924 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 1925 iorq->mode = oldmode; 1926 xdcsc->ndone--; 1927 } 1928 /* check for read/write to a sector in bad144 table if bad: redirect 1929 * request to bad144 area */ 1930 1931 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 1932 (iorq->mode & XD_MODE_B144) == 0) { 1933 advance = iorq->sectcnt - iopb->sectcnt; 1934 XDC_ADVANCE(iorq, advance); 1935 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 1936 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 1937 iorq->blockno % iorq->xd->nsect)) != -1) { 1938 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 1939 * redirect */ 1940 iopb->errno = iopb->done = iopb->errs = 0; 1941 iopb->sectcnt = 1; 1942 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 1943 /* second to last acyl */ 1944 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 1945 * standard */ 1946 iopb->headno = i / iorq->xd->nhead; 1947 iopb->sectno = i % iorq->xd->nhead; 1948 XDC_HWAIT(xdcsc, rqno); 1949 xdc_start(xdcsc, 1); /* resubmit */ 1950 return (XD_ERR_AOK); /* recovered! */ 1951 } 1952 } 1953 1954 /* 1955 * it isn't a bad144 sector, must be real error! see if we can retry 1956 * it? 1957 */ 1958 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 1959 xdc_perror(iorq, iopb, 1); /* inform of error state 1960 * change */ 1961 iorq->lasterror = errno; 1962 1963 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 1964 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 1965 iorq->tries++; 1966 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1967 XDC_HWAIT(xdcsc, rqno); 1968 xdc_start(xdcsc, 1); /* restart */ 1969 return (XD_ERR_AOK); /* recovered! */ 1970 } 1971 1972 /* failed to recover from this error */ 1973 return (XD_ERR_FAIL); 1974 } 1975 1976 /* 1977 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 1978 */ 1979 void 1980 xdc_tick(void *arg) 1981 1982 { 1983 struct xdc_softc *xdcsc = arg; 1984 int lcv, s, reset = 0; 1985 #ifdef XDC_DIAG 1986 int nwait, nrun, nfree, ndone, whd = 0; 1987 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 1988 s = splbio(); 1989 nwait = xdcsc->nwait; 1990 nrun = xdcsc->nrun; 1991 nfree = xdcsc->nfree; 1992 ndone = xdcsc->ndone; 1993 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 1994 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 1995 splx(s); 1996 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 1997 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 1998 xdcsc->sc_dev.dv_xname, nwait, nfree, nrun, ndone, 1999 XDC_MAXIOPB); 2000 memset(mark, 0, sizeof(mark)); 2001 printf("FREE: "); 2002 for (lcv = nfree; lcv > 0; lcv--) { 2003 printf("%d ", fqc[lcv - 1]); 2004 mark[fqc[lcv - 1]] = 1; 2005 } 2006 printf("\nWAIT: "); 2007 lcv = nwait; 2008 while (lcv > 0) { 2009 printf("%d ", wqc[whd]); 2010 mark[wqc[whd]] = 1; 2011 whd = (whd + 1) % XDC_MAXIOPB; 2012 lcv--; 2013 } 2014 printf("\n"); 2015 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2016 if (mark[lcv] == 0) 2017 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2018 lcv, xdcsc->reqs[lcv].mode, 2019 xdcsc->iopbase[lcv].done, 2020 xdcsc->iopbase[lcv].errs, 2021 xdcsc->iopbase[lcv].errno, 2022 xdcsc->reqs[lcv].ttl, 2023 xdcsc->reqs[lcv].buf); 2024 } 2025 } else 2026 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2027 printf("%s: diag: lots of done jobs (%d)\n", 2028 xdcsc->sc_dev.dv_xname, ndone); 2029 2030 #endif 2031 #ifdef XDC_DEBUG 2032 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2033 xdcsc->sc_dev.dv_xname, 2034 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2035 xdcsc->ndone); 2036 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2037 if (xdcsc->reqs[lcv].mode) 2038 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2039 lcv, 2040 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2041 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2042 } 2043 #endif 2044 2045 /* reduce ttl for each request if one goes to zero, reset xdc */ 2046 s = splbio(); 2047 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2048 if (xdcsc->reqs[lcv].mode == 0 || 2049 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2050 continue; 2051 xdcsc->reqs[lcv].ttl--; 2052 if (xdcsc->reqs[lcv].ttl == 0) 2053 reset = 1; 2054 } 2055 if (reset) { 2056 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2057 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2058 } 2059 splx(s); 2060 2061 /* until next time */ 2062 2063 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2064 } 2065 2066 /* 2067 * xdc_ioctlcmd: this function provides a user level interface to the 2068 * controller via ioctl. this allows "format" programs to be written 2069 * in user code, and is also useful for some debugging. we return 2070 * an error code. called at user priority. 2071 */ 2072 int 2073 xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2074 2075 { 2076 int s, err, rqno; 2077 void *dvmabuf = NULL; 2078 struct xdc_softc *xdcsc; 2079 2080 /* check sanity of requested command */ 2081 2082 switch (xio->cmd) { 2083 2084 case XDCMD_NOP: /* no op: everything should be zero */ 2085 if (xio->subfn || xio->dptr || xio->dlen || 2086 xio->block || xio->sectcnt) 2087 return (EINVAL); 2088 break; 2089 2090 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2091 case XDCMD_WR: 2092 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2093 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2094 return (EINVAL); 2095 break; 2096 2097 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2098 return (EINVAL); 2099 2100 case XDCMD_WRP: /* write parameters */ 2101 return (EINVAL);/* not useful, except maybe drive 2102 * parameters... but drive parameters should 2103 * go via disklabel changes */ 2104 2105 case XDCMD_RDP: /* read parameters */ 2106 if (xio->subfn != XDFUN_DRV || 2107 xio->dlen || xio->block || xio->dptr) 2108 return (EINVAL); /* allow read drive params to 2109 * get hw_spt */ 2110 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2111 return (0); 2112 break; 2113 2114 case XDCMD_XRD: /* extended read/write */ 2115 case XDCMD_XWR: 2116 2117 switch (xio->subfn) { 2118 2119 case XDFUN_THD:/* track headers */ 2120 if (xio->sectcnt != xd->hw_spt || 2121 (xio->block % xd->nsect) != 0 || 2122 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2123 xio->dptr == NULL) 2124 return (EINVAL); 2125 xio->sectcnt = 0; 2126 break; 2127 2128 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2129 if (xio->cmd == XDCMD_XRD) 2130 return (EINVAL); /* no XDFUN_VFY */ 2131 if (xio->sectcnt || xio->dlen || 2132 (xio->block % xd->nsect) != 0 || xio->dptr) 2133 return (EINVAL); 2134 break; 2135 2136 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2137 return (EINVAL); /* not yet */ 2138 2139 case XDFUN_DM: /* defect map */ 2140 case XDFUN_DMX:/* defect map (alternate location) */ 2141 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2142 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2143 return (EINVAL); 2144 break; 2145 2146 default: 2147 return (EINVAL); 2148 } 2149 break; 2150 2151 case XDCMD_TST: /* diagnostics */ 2152 return (EINVAL); 2153 2154 default: 2155 return (EINVAL);/* ??? */ 2156 } 2157 2158 /* create DVMA buffer for request if needed */ 2159 2160 if (xio->dlen) { 2161 dvmabuf = dvma_malloc(xio->dlen); 2162 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2163 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2164 if (err) { 2165 dvma_free(dvmabuf, xio->dlen); 2166 return (err); 2167 } 2168 } 2169 } 2170 /* do it! */ 2171 2172 err = 0; 2173 xdcsc = xd->parent; 2174 s = splbio(); 2175 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2176 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2177 if (rqno == XD_ERR_FAIL) { 2178 err = EIO; 2179 goto done; 2180 } 2181 xio->errno = xdcsc->reqs[rqno].errno; 2182 xio->tries = xdcsc->reqs[rqno].tries; 2183 XDC_DONE(xdcsc, rqno, err); 2184 2185 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2186 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2187 2188 done: 2189 splx(s); 2190 if (dvmabuf) 2191 dvma_free(dvmabuf, xio->dlen); 2192 return (err); 2193 } 2194 2195 /* 2196 * xdc_e2str: convert error code number into an error string 2197 */ 2198 const char * 2199 xdc_e2str(int no) 2200 { 2201 switch (no) { 2202 case XD_ERR_FAIL: 2203 return ("Software fatal error"); 2204 case XD_ERR_AOK: 2205 return ("Successful completion"); 2206 case XD_ERR_ICYL: 2207 return ("Illegal cylinder address"); 2208 case XD_ERR_IHD: 2209 return ("Illegal head address"); 2210 case XD_ERR_ISEC: 2211 return ("Illgal sector address"); 2212 case XD_ERR_CZER: 2213 return ("Count zero"); 2214 case XD_ERR_UIMP: 2215 return ("Unimplemented command"); 2216 case XD_ERR_IF1: 2217 return ("Illegal field length 1"); 2218 case XD_ERR_IF2: 2219 return ("Illegal field length 2"); 2220 case XD_ERR_IF3: 2221 return ("Illegal field length 3"); 2222 case XD_ERR_IF4: 2223 return ("Illegal field length 4"); 2224 case XD_ERR_IF5: 2225 return ("Illegal field length 5"); 2226 case XD_ERR_IF6: 2227 return ("Illegal field length 6"); 2228 case XD_ERR_IF7: 2229 return ("Illegal field length 7"); 2230 case XD_ERR_ISG: 2231 return ("Illegal scatter/gather length"); 2232 case XD_ERR_ISPT: 2233 return ("Not enough sectors per track"); 2234 case XD_ERR_ALGN: 2235 return ("Next IOPB address alignment error"); 2236 case XD_ERR_SGAL: 2237 return ("Scatter/gather address alignment error"); 2238 case XD_ERR_SGEC: 2239 return ("Scatter/gather with auto-ECC"); 2240 case XD_ERR_SECC: 2241 return ("Soft ECC corrected"); 2242 case XD_ERR_SIGN: 2243 return ("ECC ignored"); 2244 case XD_ERR_ASEK: 2245 return ("Auto-seek retry recovered"); 2246 case XD_ERR_RTRY: 2247 return ("Soft retry recovered"); 2248 case XD_ERR_HECC: 2249 return ("Hard data ECC"); 2250 case XD_ERR_NHDR: 2251 return ("Header not found"); 2252 case XD_ERR_NRDY: 2253 return ("Drive not ready"); 2254 case XD_ERR_TOUT: 2255 return ("Operation timeout"); 2256 case XD_ERR_VTIM: 2257 return ("VMEDMA timeout"); 2258 case XD_ERR_DSEQ: 2259 return ("Disk sequencer error"); 2260 case XD_ERR_HDEC: 2261 return ("Header ECC error"); 2262 case XD_ERR_RVFY: 2263 return ("Read verify"); 2264 case XD_ERR_VFER: 2265 return ("Fatail VMEDMA error"); 2266 case XD_ERR_VBUS: 2267 return ("VMEbus error"); 2268 case XD_ERR_DFLT: 2269 return ("Drive faulted"); 2270 case XD_ERR_HECY: 2271 return ("Header error/cyliner"); 2272 case XD_ERR_HEHD: 2273 return ("Header error/head"); 2274 case XD_ERR_NOCY: 2275 return ("Drive not on-cylinder"); 2276 case XD_ERR_SEEK: 2277 return ("Seek error"); 2278 case XD_ERR_ILSS: 2279 return ("Illegal sector size"); 2280 case XD_ERR_SEC: 2281 return ("Soft ECC"); 2282 case XD_ERR_WPER: 2283 return ("Write-protect error"); 2284 case XD_ERR_IRAM: 2285 return ("IRAM self test failure"); 2286 case XD_ERR_MT3: 2287 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2288 case XD_ERR_MT4: 2289 return ("Maintenance test 4 failure (header shift reg)"); 2290 case XD_ERR_MT5: 2291 return ("Maintenance test 5 failure (VMEDMA regs)"); 2292 case XD_ERR_MT6: 2293 return ("Maintenance test 6 failure (REGCEL chip)"); 2294 case XD_ERR_MT7: 2295 return ("Maintenance test 7 failure (buffer parity)"); 2296 case XD_ERR_MT8: 2297 return ("Maintenance test 8 failure (disk FIFO)"); 2298 case XD_ERR_IOCK: 2299 return ("IOPB checksum miscompare"); 2300 case XD_ERR_IODM: 2301 return ("IOPB DMA fatal"); 2302 case XD_ERR_IOAL: 2303 return ("IOPB address alignment error"); 2304 case XD_ERR_FIRM: 2305 return ("Firmware error"); 2306 case XD_ERR_MMOD: 2307 return ("Illegal maintenance mode test number"); 2308 case XD_ERR_ACFL: 2309 return ("ACFAIL asserted"); 2310 default: 2311 return ("Unknown error"); 2312 } 2313 } 2314
Indexes created Mon Sep 29 21:09:56 GMT 2025