xd.c revision 1.64
1 /* $NetBSD: xd.c,v 1.64 2008/06/08 17:30:08 tsutsui Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x d . c x y l o g i c s 7 5 3 / 7 0 5 3 v m e / s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (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 1.64 2008/06/08 17:30:08 tsutsui 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_oflags |= BO_DONE; 313 bp->b_cflags &= ~BC_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 = device_private(self); 546 struct xdc_softc *xdc = device_private(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 = device_lookup_private(&xd_cd, 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 = device_lookup_private(&xd_cd, 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 static enum kauth_device_req 798 xd_getkauthreq(u_char cmd) 799 { 800 enum kauth_device_req req; 801 802 switch (cmd) { 803 case XDCMD_WR: 804 case XDCMD_XWR: 805 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 806 break; 807 808 case XDCMD_RD: 809 case XDCMD_XRD: 810 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 811 break; 812 813 case XDCMD_RDP: 814 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 815 break; 816 817 case XDCMD_WRP: 818 case XDCMD_RST: 819 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 820 break; 821 822 case XDCMD_NOP: 823 case XDCMD_SK: 824 case XDCMD_TST: 825 default: 826 req = 0; 827 break; 828 } 829 830 return (req); 831 } 832 833 /* 834 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 835 */ 836 int 837 xdioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 838 { 839 struct xd_softc *xd; 840 struct xd_iocmd *xio; 841 int error, s, unit; 842 843 unit = DISKUNIT(dev); 844 845 xd = device_lookup_private(&xd_cd, unit); 846 if (xd == NULL) 847 return (ENXIO); 848 849 /* switch on ioctl type */ 850 851 switch (command) { 852 case DIOCSBAD: /* set bad144 info */ 853 if ((flag & FWRITE) == 0) 854 return EBADF; 855 s = splbio(); 856 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 857 splx(s); 858 return 0; 859 860 case DIOCGDINFO: /* get disk label */ 861 memcpy(addr, xd->sc_dk.dk_label, sizeof(struct disklabel)); 862 return 0; 863 864 case DIOCGPART: /* get partition info */ 865 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 866 ((struct partinfo *) addr)->part = 867 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 868 return 0; 869 870 case DIOCSDINFO: /* set disk label */ 871 if ((flag & FWRITE) == 0) 872 return EBADF; 873 error = setdisklabel(xd->sc_dk.dk_label, 874 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 875 xd->sc_dk.dk_cpulabel); 876 if (error == 0) { 877 if (xd->state == XD_DRIVE_NOLABEL) 878 xd->state = XD_DRIVE_ONLINE; 879 } 880 return error; 881 882 case DIOCWLABEL: /* change write status of disk label */ 883 if ((flag & FWRITE) == 0) 884 return EBADF; 885 if (*(int *) addr) 886 xd->flags |= XD_WLABEL; 887 else 888 xd->flags &= ~XD_WLABEL; 889 return 0; 890 891 case DIOCWDINFO: /* write disk label */ 892 if ((flag & FWRITE) == 0) 893 return EBADF; 894 error = setdisklabel(xd->sc_dk.dk_label, 895 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 896 xd->sc_dk.dk_cpulabel); 897 if (error == 0) { 898 if (xd->state == XD_DRIVE_NOLABEL) 899 xd->state = XD_DRIVE_ONLINE; 900 901 /* Simulate opening partition 0 so write succeeds. */ 902 xd->sc_dk.dk_openmask |= (1 << 0); 903 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 904 xdstrategy, xd->sc_dk.dk_label, 905 xd->sc_dk.dk_cpulabel); 906 xd->sc_dk.dk_openmask = 907 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 908 } 909 return error; 910 911 case DIOSXDCMD: { 912 enum kauth_device_req req; 913 914 xio = (struct xd_iocmd *) addr; 915 req = xd_getkauthreq(xio->cmd); 916 if ((error = kauth_authorize_device_passthru(l->l_cred, 917 dev, req, xio)) != 0) 918 return (error); 919 return (xdc_ioctlcmd(xd, dev, xio)); 920 } 921 922 default: 923 return ENOTTY; 924 } 925 } 926 927 /* 928 * xdopen: open drive 929 */ 930 int 931 xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 932 { 933 int err, unit, part, s; 934 struct xd_softc *xd; 935 936 /* first, could it be a valid target? */ 937 unit = DISKUNIT(dev); 938 xd = device_lookup_private(&xd_cd, unit); 939 if (xd == NULL) 940 return (ENXIO); 941 part = DISKPART(dev); 942 err = 0; 943 944 /* 945 * If some other processing is doing init, sleep. 946 */ 947 s = splbio(); 948 while (xd->state == XD_DRIVE_ATTACHING) { 949 if (tsleep(&xd->state, PRIBIO, "xdopen", 0)) { 950 err = EINTR; 951 goto done; 952 } 953 } 954 /* Do we need to init the drive? */ 955 if (xd->state == XD_DRIVE_UNKNOWN) { 956 xd_init(xd); 957 wakeup(&xd->state); 958 } 959 /* Was the init successful? */ 960 if (xd->state == XD_DRIVE_UNKNOWN) { 961 err = EIO; 962 goto done; 963 } 964 965 /* check for partition */ 966 if (part != RAW_PART && 967 (part >= xd->sc_dk.dk_label->d_npartitions || 968 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 969 err = ENXIO; 970 goto done; 971 } 972 973 /* set open masks */ 974 switch (fmt) { 975 case S_IFCHR: 976 xd->sc_dk.dk_copenmask |= (1 << part); 977 break; 978 case S_IFBLK: 979 xd->sc_dk.dk_bopenmask |= (1 << part); 980 break; 981 } 982 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 983 984 done: 985 splx(s); 986 return (err); 987 } 988 989 int 990 xdread(dev_t dev, struct uio *uio, int flags) 991 { 992 993 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 994 } 995 996 int 997 xdwrite(dev_t dev, struct uio *uio, int flags) 998 { 999 1000 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1001 } 1002 1003 1004 /* 1005 * xdsize: return size of a partition for a dump 1006 */ 1007 int 1008 xdsize(dev_t dev) 1009 { 1010 struct xd_softc *xdsc; 1011 int unit, part, size, omask; 1012 1013 /* valid unit? */ 1014 unit = DISKUNIT(dev); 1015 xdsc = device_lookup_private(&xd_cd, unit); 1016 if (xdsc == NULL) 1017 return (-1); 1018 1019 part = DISKPART(dev); 1020 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1021 1022 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1023 return (-1); 1024 1025 /* do it */ 1026 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1027 size = -1; /* only give valid size for swap partitions */ 1028 else 1029 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1030 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1031 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1032 return (-1); 1033 return (size); 1034 } 1035 1036 /* 1037 * xdstrategy: buffering system interface to xd. 1038 */ 1039 void 1040 xdstrategy(struct buf *bp) 1041 { 1042 struct xd_softc *xd; 1043 struct xdc_softc *parent; 1044 int s, unit; 1045 1046 unit = DISKUNIT(bp->b_dev); 1047 1048 /* check for live device */ 1049 1050 xd = device_lookup_private(&xd_cd, unit); 1051 if (xd == NULL || 1052 bp->b_blkno < 0 || 1053 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1054 bp->b_error = EINVAL; 1055 goto done; 1056 } 1057 1058 /* There should always be an open first. */ 1059 if (xd->state == XD_DRIVE_UNKNOWN) { 1060 bp->b_error = EIO; 1061 goto done; 1062 } 1063 1064 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1065 /* no I/O to unlabeled disks, unless raw partition */ 1066 bp->b_error = EIO; 1067 goto done; 1068 } 1069 /* short circuit zero length request */ 1070 1071 if (bp->b_bcount == 0) 1072 goto done; 1073 1074 /* check bounds with label (disksubr.c). Determine the size of the 1075 * transfer, and make sure it is within the boundaries of the 1076 * partition. Adjust transfer if needed, and signal errors or early 1077 * completion. */ 1078 1079 if (bounds_check_with_label(&xd->sc_dk, bp, 1080 (xd->flags & XD_WLABEL) != 0) <= 0) 1081 goto done; 1082 1083 /* 1084 * now we know we have a valid buf structure that we need to do I/O 1085 * on. 1086 * 1087 * note that we don't disksort because the controller has a sorting 1088 * algorithm built into the hardware. 1089 */ 1090 1091 s = splbio(); /* protect the queues */ 1092 1093 /* first, give jobs in front of us a chance */ 1094 parent = xd->parent; 1095 while (parent->nfree > 0 && BUFQ_PEEK(parent->sc_wq) != NULL) 1096 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1097 break; 1098 1099 /* 1100 * if there are no free iorq's, then we just queue and return. the 1101 * buffs will get picked up later by xdcintr(). 1102 */ 1103 if (parent->nfree == 0) { 1104 BUFQ_PUT(parent->sc_wq, bp); 1105 splx(s); 1106 return; 1107 } 1108 1109 /* now we have free iopb's and we are at splbio... start 'em up */ 1110 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1111 return; 1112 } 1113 1114 /* done! */ 1115 1116 splx(s); 1117 return; 1118 1119 done: /* tells upper layers we are done with this 1120 * buf */ 1121 bp->b_resid = bp->b_bcount; 1122 biodone(bp); 1123 } 1124 /* 1125 * end of {b,c}devsw functions 1126 */ 1127 1128 /* 1129 * i n t e r r u p t f u n c t i o n 1130 * 1131 * xdcintr: hardware interrupt. 1132 */ 1133 int 1134 xdcintr(void *v) 1135 { 1136 struct xdc_softc *xdcsc = v; 1137 1138 /* kick the event counter */ 1139 xdcsc->sc_intrcnt.ev_count++; 1140 1141 /* remove as many done IOPBs as possible */ 1142 xdc_remove_iorq(xdcsc); 1143 1144 /* start any iorq's already waiting */ 1145 xdc_start(xdcsc, XDC_MAXIOPB); 1146 1147 /* fill up any remaining iorq's with queue'd buffers */ 1148 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1149 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1150 break; 1151 1152 return (1); 1153 } 1154 /* 1155 * end of interrupt function 1156 */ 1157 1158 /* 1159 * i n t e r n a l f u n c t i o n s 1160 */ 1161 1162 /* 1163 * xdc_rqinit: fill out the fields of an I/O request 1164 */ 1165 1166 inline void 1167 xdc_rqinit(struct xd_iorq *rq, struct xdc_softc *xdc, struct xd_softc *xd, 1168 int md, u_long blk, int cnt, void *db, struct buf *bp) 1169 { 1170 rq->xdc = xdc; 1171 rq->xd = xd; 1172 rq->ttl = XDC_MAXTTL + 10; 1173 rq->mode = md; 1174 rq->tries = rq->errno = rq->lasterror = 0; 1175 rq->blockno = blk; 1176 rq->sectcnt = cnt; 1177 rq->dbuf = rq->dbufbase = db; 1178 rq->buf = bp; 1179 } 1180 1181 /* 1182 * xdc_rqtopb: load up an IOPB based on an iorq 1183 */ 1184 void 1185 xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1186 { 1187 u_long block, dp; 1188 1189 /* standard stuff */ 1190 1191 iopb->errs = iopb->done = 0; 1192 iopb->comm = cmd; 1193 iopb->errno = iopb->status = 0; 1194 iopb->subfun = subfun; 1195 if (iorq->xd) 1196 iopb->unit = iorq->xd->xd_drive; 1197 else 1198 iopb->unit = 0; 1199 1200 /* check for alternate IOPB format */ 1201 1202 if (cmd == XDCMD_WRP) { 1203 switch (subfun) { 1204 case XDFUN_CTL:{ 1205 struct xd_iopb_ctrl *ctrl = 1206 (struct xd_iopb_ctrl *) iopb; 1207 iopb->lll = 0; 1208 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1209 ? 0 1210 : iorq->xdc->ipl; 1211 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1212 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1213 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1214 XDPC_RBC | XDPC_ECC2; 1215 ctrl->throttle = XDC_THROTTLE; 1216 #ifdef sparc 1217 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 1218 ctrl->delay = XDC_DELAY_4_300; 1219 else 1220 ctrl->delay = XDC_DELAY_SPARC; 1221 #endif 1222 #ifdef sun3 1223 ctrl->delay = XDC_DELAY_SUN3; 1224 #endif 1225 break; 1226 } 1227 case XDFUN_DRV:{ 1228 struct xd_iopb_drive *drv = 1229 (struct xd_iopb_drive *)iopb; 1230 /* we assume that the disk label has the right 1231 * info */ 1232 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1233 drv->dparam_ipl = (XDC_DPARAM << 3); 1234 else 1235 drv->dparam_ipl = (XDC_DPARAM << 3) | 1236 iorq->xdc->ipl; 1237 drv->maxsect = iorq->xd->nsect - 1; 1238 drv->maxsector = drv->maxsect; 1239 /* note: maxsector != maxsect only if you are 1240 * doing cyl sparing */ 1241 drv->headoff = 0; 1242 drv->maxcyl = iorq->xd->pcyl - 1; 1243 drv->maxhead = iorq->xd->nhead - 1; 1244 break; 1245 } 1246 case XDFUN_FMT:{ 1247 struct xd_iopb_format *form = 1248 (struct xd_iopb_format *) iopb; 1249 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1250 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1251 else 1252 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1253 iorq->xdc->ipl; 1254 form->field1 = XDFM_FIELD1; 1255 form->field2 = XDFM_FIELD2; 1256 form->field3 = XDFM_FIELD3; 1257 form->field4 = XDFM_FIELD4; 1258 form->bytespersec = XDFM_BPS; 1259 form->field6 = XDFM_FIELD6; 1260 form->field7 = XDFM_FIELD7; 1261 break; 1262 } 1263 } 1264 } else { 1265 1266 /* normal IOPB case (harmless to RDP command) */ 1267 1268 iopb->lll = 0; 1269 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1270 ? 0 1271 : iorq->xdc->ipl; 1272 iopb->sectcnt = iorq->sectcnt; 1273 block = iorq->blockno; 1274 if (iorq->xd == NULL || block == 0) { 1275 iopb->sectno = iopb->headno = iopb->cylno = 0; 1276 } else { 1277 iopb->sectno = block % iorq->xd->nsect; 1278 block = block / iorq->xd->nsect; 1279 iopb->headno = block % iorq->xd->nhead; 1280 block = block / iorq->xd->nhead; 1281 iopb->cylno = block; 1282 } 1283 iopb->daddr = dp = (iorq->dbuf == NULL) ? 0 : 1284 dvma_kvtopa(iorq->dbuf, iorq->xdc->bustype); 1285 iopb->addrmod = XDC_ADDRMOD; 1286 } 1287 } 1288 1289 /* 1290 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1291 * If you've already got an IORQ, you can call submit directly (currently 1292 * there is no need to do this). NORM requests are handled separately. 1293 */ 1294 int 1295 xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1296 int scnt, char *dptr, int fullmode) 1297 { 1298 struct xd_iorq *iorq; 1299 struct xd_iopb *iopb; 1300 int rqno, retry; 1301 int submode = XD_STATE(fullmode); 1302 1303 /* get iorq/iopb */ 1304 switch (submode) { 1305 case XD_SUB_POLL: 1306 while (xdcsc->nfree == 0) { 1307 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1308 return (XD_ERR_FAIL); 1309 } 1310 break; 1311 case XD_SUB_WAIT: 1312 retry = 1; 1313 while (retry) { 1314 while (xdcsc->nfree == 0) { 1315 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1316 return (XD_ERR_FAIL); 1317 } 1318 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1319 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1320 return (XD_ERR_FAIL); 1321 } 1322 if (xdcsc->nfree) 1323 retry = 0; /* got it */ 1324 } 1325 break; 1326 default: 1327 return (XD_ERR_FAIL); /* illegal */ 1328 } 1329 if (xdcsc->nfree == 0) 1330 panic("xdcmd nfree"); 1331 rqno = XDC_RQALLOC(xdcsc); 1332 iorq = &xdcsc->reqs[rqno]; 1333 iopb = iorq->iopb; 1334 1335 1336 /* init iorq/iopb */ 1337 xdc_rqinit(iorq, xdcsc, 1338 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1339 fullmode, block, scnt, dptr, NULL); 1340 1341 /* load IOPB from iorq */ 1342 xdc_rqtopb(iorq, iopb, cmd, subfn); 1343 1344 /* submit it for processing */ 1345 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1346 1347 return (rqno); 1348 } 1349 1350 /* 1351 * xdc_startbuf 1352 * start a buffer running, assumes nfree > 0 1353 */ 1354 int 1355 xdc_startbuf(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1356 { 1357 int rqno, partno; 1358 struct xd_iorq *iorq; 1359 struct xd_iopb *iopb; 1360 u_long block; 1361 void *dbuf; 1362 1363 if (!xdcsc->nfree) 1364 panic("xdc_startbuf free"); 1365 rqno = XDC_RQALLOC(xdcsc); 1366 iorq = &xdcsc->reqs[rqno]; 1367 iopb = iorq->iopb; 1368 1369 /* get buf */ 1370 1371 if (bp == NULL) { 1372 bp = BUFQ_GET(xdcsc->sc_wq); 1373 if (bp == NULL) 1374 panic("xdc_startbuf bp"); 1375 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1376 } 1377 partno = DISKPART(bp->b_dev); 1378 #ifdef XDC_DEBUG 1379 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1380 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1381 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1382 bp->b_bcount, bp->b_data); 1383 #endif 1384 1385 /* 1386 * load request. we have to calculate the correct block number based 1387 * on partition info. 1388 * 1389 * also, note that there are two kinds of buf structures, those with 1390 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1391 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1392 * buffer which has already been mapped into DVMA space. (Not on sun3) 1393 * However, if B_PHYS is not set, then the buffer is a normal system 1394 * buffer which does *not* live in DVMA space. In that case we call 1395 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1396 * 1397 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1398 * as mapped into DVMA space, where as the bp->b_data points to its 1399 * non-DVMA mapping. 1400 * 1401 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1402 * into dvma space, only that it was remapped into the kernel. 1403 * We ALWAYS have to remap the kernel buf into DVMA space. 1404 * (It is done inexpensively, using whole segments!) 1405 */ 1406 1407 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1408 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1409 1410 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1411 if (dbuf == NULL) { /* out of DVMA space */ 1412 printf("%s: warning: out of DVMA space\n", 1413 xdcsc->sc_dev.dv_xname); 1414 XDC_FREE(xdcsc, rqno); 1415 BUFQ_PUT(xdcsc->sc_wq, bp); 1416 return (XD_ERR_FAIL); /* XXX: need some sort of 1417 * call-back scheme here? */ 1418 } 1419 1420 /* init iorq and load iopb from it */ 1421 1422 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1423 bp->b_bcount / XDFM_BPS, dbuf, bp); 1424 1425 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1426 1427 /* Instrumentation. */ 1428 disk_busy(&xdsc->sc_dk); 1429 1430 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1431 1432 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1433 return (XD_ERR_AOK); 1434 } 1435 1436 1437 /* 1438 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1439 * if ok. if it fail returns an error code. type is XD_SUB_*. 1440 * 1441 * note: caller frees iorq in all cases except NORM 1442 * 1443 * return value: 1444 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1445 * WAIT: XD_AOK (success), <error-code> (failed) 1446 * POLL: <same as WAIT> 1447 * NOQ : <same as NORM> 1448 * 1449 * there are three sources for i/o requests: 1450 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1451 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1452 * [3] open/ioctl: these are I/O requests done in the context of a process, 1453 * and the process should block until they are done. 1454 * 1455 * software state is stored in the iorq structure. each iorq has an 1456 * iopb structure. the hardware understands the iopb structure. 1457 * every command must go through an iopb. a 7053 can only handle 1458 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1459 * DVMA space at boot up time. what happens if we run out of iopb's? 1460 * for i/o type [1], the buffers are queued at the "buff" layer and 1461 * picked up later by the interrupt routine. for case [2] the 1462 * programmed i/o driver is called with a special flag that says 1463 * return when one iopb is free. for case [3] the process can sleep 1464 * on the iorq free list until some iopbs are available. 1465 */ 1466 1467 int 1468 xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1469 { 1470 u_long iopbaddr; 1471 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1472 1473 #ifdef XDC_DEBUG 1474 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1475 iorqno, type); 1476 #endif 1477 1478 /* first check and see if controller is busy */ 1479 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1480 #ifdef XDC_DEBUG 1481 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1482 #endif 1483 if (type == XD_SUB_NOQ) 1484 return (XD_ERR_FAIL); /* failed */ 1485 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1486 switch (type) { 1487 case XD_SUB_NORM: 1488 return XD_ERR_AOK; /* success */ 1489 case XD_SUB_WAIT: 1490 while (iorq->iopb->done == 0) { 1491 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1492 } 1493 return (iorq->errno); 1494 case XD_SUB_POLL: 1495 return (xdc_piodriver(xdcsc, iorqno, 0)); 1496 default: 1497 panic("xdc_submit_iorq adding"); 1498 } 1499 } 1500 #ifdef XDC_DEBUG 1501 { 1502 u_char *rio = (u_char *) iorq->iopb; 1503 int sz = sizeof(struct xd_iopb), lcv; 1504 printf("%s: aio #%d [", 1505 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1506 for (lcv = 0; lcv < sz; lcv++) 1507 printf(" %02x", rio[lcv]); 1508 printf("]\n"); 1509 } 1510 #endif /* XDC_DEBUG */ 1511 1512 /* controller not busy, start command */ 1513 iopbaddr = dvma_kvtopa(iorq->iopb, xdcsc->bustype); 1514 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1515 xdcsc->nrun++; 1516 /* command now running, wrap it up */ 1517 switch (type) { 1518 case XD_SUB_NORM: 1519 case XD_SUB_NOQ: 1520 return (XD_ERR_AOK); /* success */ 1521 case XD_SUB_WAIT: 1522 while (iorq->iopb->done == 0) { 1523 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1524 } 1525 return (iorq->errno); 1526 case XD_SUB_POLL: 1527 return (xdc_piodriver(xdcsc, iorqno, 0)); 1528 default: 1529 panic("xdc_submit_iorq wrap up"); 1530 } 1531 panic("xdc_submit_iorq"); 1532 return 0; /* not reached */ 1533 } 1534 1535 1536 /* 1537 * xdc_piodriver 1538 * 1539 * programmed i/o driver. this function takes over the computer 1540 * and drains off all i/o requests. it returns the status of the iorq 1541 * the caller is interesting in. if freeone is true, then it returns 1542 * when there is a free iorq. 1543 */ 1544 int 1545 xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 1546 { 1547 int nreset = 0; 1548 int retval = 0; 1549 u_long count; 1550 struct xdc *xdc = xdcsc->xdc; 1551 #ifdef XDC_DEBUG 1552 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1553 iorqno, freeone); 1554 #endif 1555 1556 while (xdcsc->nwait || xdcsc->nrun) { 1557 #ifdef XDC_DEBUG 1558 printf("xdc_piodriver: wait=%d, run=%d\n", 1559 xdcsc->nwait, xdcsc->nrun); 1560 #endif 1561 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1562 #ifdef XDC_DEBUG 1563 printf("xdc_piodriver: done wait with count = %d\n", count); 1564 #endif 1565 /* we expect some progress soon */ 1566 if (count == 0 && nreset >= 2) { 1567 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1568 #ifdef XDC_DEBUG 1569 printf("xdc_piodriver: timeout\n"); 1570 #endif 1571 return (XD_ERR_FAIL); 1572 } 1573 if (count == 0) { 1574 if (xdc_reset(xdcsc, 0, 1575 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1576 XD_ERR_FAIL, 1577 0) == XD_ERR_FAIL) 1578 return (XD_ERR_FAIL); /* flushes all but POLL 1579 * requests, resets */ 1580 continue; 1581 } 1582 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1583 if (freeone) { 1584 if (xdcsc->nrun < XDC_MAXIOPB) { 1585 #ifdef XDC_DEBUG 1586 printf("xdc_piodriver: done: one free\n"); 1587 #endif 1588 return (XD_ERR_AOK); 1589 } 1590 continue; /* don't xdc_start */ 1591 } 1592 xdc_start(xdcsc, XDC_MAXIOPB); 1593 } 1594 1595 /* get return value */ 1596 1597 retval = xdcsc->reqs[iorqno].errno; 1598 1599 #ifdef XDC_DEBUG 1600 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1601 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1602 #endif 1603 1604 /* now that we've drained everything, start up any bufs that have 1605 * queued */ 1606 1607 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1608 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1609 break; 1610 1611 return (retval); 1612 } 1613 1614 /* 1615 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1616 * we steal iopb[0] for this, but we put it back when we are done. 1617 */ 1618 void 1619 xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1620 { 1621 struct xd_iopb tmpiopb; 1622 u_long addr; 1623 int del; 1624 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1625 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1626 xdcsc->iopbase->comm = XDCMD_RST; 1627 xdcsc->iopbase->unit = xdsc->xd_drive; 1628 addr = (u_long) xdcsc->dvmaiopb; 1629 XDC_GO(xdcsc->xdc, addr); /* go! */ 1630 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1631 if (del <= 0 || xdcsc->iopbase->errs) { 1632 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1633 xdc_e2str(xdcsc->iopbase->errno)); 1634 xdcsc->xdc->xdc_csr = XDC_RESET; 1635 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1636 if (del <= 0) 1637 panic("xdc_reset"); 1638 } else { 1639 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1640 } 1641 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1642 } 1643 1644 1645 /* 1646 * xdc_reset: reset everything: requests are marked as errors except 1647 * a polled request (which is resubmitted) 1648 */ 1649 int 1650 xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1651 struct xd_softc *xdsc) 1652 { 1653 int del = 0, lcv, retval = XD_ERR_AOK; 1654 int oldfree = xdcsc->nfree; 1655 struct xd_iorq *iorq; 1656 1657 /* soft reset hardware */ 1658 1659 if (!quiet) 1660 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1661 xdcsc->xdc->xdc_csr = XDC_RESET; 1662 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1663 if (del <= 0) { 1664 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1665 retval = XD_ERR_FAIL; 1666 } 1667 if (xdsc) 1668 xdc_xdreset(xdcsc, xdsc); 1669 1670 /* fix queues based on "blast-mode" */ 1671 1672 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1673 iorq = &xdcsc->reqs[lcv]; 1674 1675 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1676 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1677 XD_STATE(iorq->mode) != XD_SUB_NORM) 1678 /* is it active? */ 1679 continue; 1680 1681 xdcsc->nrun--; /* it isn't running any more */ 1682 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1683 /* failed */ 1684 iorq->errno = error; 1685 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1686 switch (XD_STATE(iorq->mode)) { 1687 case XD_SUB_NORM: 1688 iorq->buf->b_error = EIO; 1689 iorq->buf->b_resid = 1690 iorq->sectcnt * XDFM_BPS; 1691 /* Sun3: map/unmap regardless of B_PHYS */ 1692 dvma_mapout(iorq->dbufbase, 1693 iorq->buf->b_bcount); 1694 disk_unbusy(&iorq->xd->sc_dk, 1695 (iorq->buf->b_bcount - iorq->buf->b_resid), 1696 (iorq->buf->b_flags & B_READ)); 1697 biodone(iorq->buf); 1698 XDC_FREE(xdcsc, lcv); /* add to free list */ 1699 break; 1700 case XD_SUB_WAIT: 1701 wakeup(iorq); 1702 case XD_SUB_POLL: 1703 xdcsc->ndone++; 1704 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1705 break; 1706 } 1707 1708 } else { 1709 1710 /* resubmit, put at front of wait queue */ 1711 XDC_HWAIT(xdcsc, lcv); 1712 } 1713 } 1714 1715 /* 1716 * now, if stuff is waiting, start it. 1717 * since we just reset it should go 1718 */ 1719 xdc_start(xdcsc, XDC_MAXIOPB); 1720 1721 /* ok, we did it */ 1722 if (oldfree == 0 && xdcsc->nfree) 1723 wakeup(&xdcsc->nfree); 1724 1725 #ifdef XDC_DIAG 1726 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1727 if (del != XDC_MAXIOPB) 1728 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1729 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1730 else 1731 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1732 printf("%s: diag: lots of done jobs (%d)\n", 1733 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1734 #endif 1735 printf("RESET DONE\n"); 1736 return (retval); 1737 } 1738 1739 /* 1740 * xdc_start: start all waiting buffers 1741 */ 1742 void 1743 xdc_start(struct xdc_softc *xdcsc, int maxio) 1744 { 1745 int rqno; 1746 while (maxio && xdcsc->nwait && 1747 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1748 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1749 * param */ 1750 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1751 panic("xdc_start"); /* should never happen */ 1752 maxio--; 1753 } 1754 } 1755 1756 /* 1757 * xdc_remove_iorq: remove "done" IOPB's. 1758 */ 1759 int 1760 xdc_remove_iorq(struct xdc_softc *xdcsc) 1761 { 1762 int errno, rqno, comm, errs; 1763 struct xdc *xdc = xdcsc->xdc; 1764 struct xd_iopb *iopb; 1765 struct xd_iorq *iorq; 1766 struct buf *bp; 1767 1768 if (xdc->xdc_csr & XDC_F_ERROR) { 1769 /* 1770 * FATAL ERROR: should never happen under normal use. This 1771 * error is so bad, you can't even tell which IOPB is bad, so 1772 * we dump them all. 1773 */ 1774 errno = xdc->xdc_f_err; 1775 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 1776 errno, xdc_e2str(errno)); 1777 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 1778 printf("%s: soft reset failed!\n", 1779 xdcsc->sc_dev.dv_xname); 1780 panic("xdc_remove_iorq: controller DEAD"); 1781 } 1782 return (XD_ERR_AOK); 1783 } 1784 1785 /* 1786 * get iopb that is done 1787 * 1788 * hmm... I used to read the address of the done IOPB off the VME 1789 * registers and calculate the rqno directly from that. that worked 1790 * until I started putting a load on the controller. when loaded, i 1791 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1792 * be set, even after DELAY'ing a while! later on the timeout 1793 * routine would detect IOPBs that were marked "running" but their 1794 * "done" bit was set. rather than dealing directly with this 1795 * problem, it is just easier to look at all running IOPB's for the 1796 * done bit. 1797 */ 1798 if (xdc->xdc_csr & XDC_REMIOPB) { 1799 xdc->xdc_csr = XDC_CLRRIO; 1800 } 1801 1802 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1803 iorq = &xdcsc->reqs[rqno]; 1804 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1805 continue; /* free, or done */ 1806 iopb = &xdcsc->iopbase[rqno]; 1807 if (iopb->done == 0) 1808 continue; /* not done yet */ 1809 1810 #ifdef XDC_DEBUG 1811 { 1812 u_char *rio = (u_char *) iopb; 1813 int sz = sizeof(struct xd_iopb), lcv; 1814 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 1815 for (lcv = 0; lcv < sz; lcv++) 1816 printf(" %02x", rio[lcv]); 1817 printf("]\n"); 1818 } 1819 #endif /* XDC_DEBUG */ 1820 1821 xdcsc->nrun--; 1822 1823 comm = iopb->comm; 1824 errs = iopb->errs; 1825 1826 if (errs) 1827 iorq->errno = iopb->errno; 1828 else 1829 iorq->errno = 0; 1830 1831 /* handle non-fatal errors */ 1832 1833 if (errs && 1834 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 1835 continue; /* AOK: we resubmitted it */ 1836 1837 1838 /* this iorq is now done (hasn't been restarted or anything) */ 1839 1840 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 1841 xdc_perror(iorq, iopb, 0); 1842 1843 /* now, if read/write check to make sure we got all the data 1844 * we needed. (this may not be the case if we got an error in 1845 * the middle of a multisector request). */ 1846 1847 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 1848 (comm == XDCMD_RD || comm == XDCMD_WR)) { 1849 /* we just successfully processed a bad144 sector 1850 * note: if we are in bad 144 mode, the pointers have 1851 * been advanced already (see above) and are pointing 1852 * at the bad144 sector. to exit bad144 mode, we 1853 * must advance the pointers 1 sector and issue a new 1854 * request if there are still sectors left to process 1855 * 1856 */ 1857 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 1858 1859 /* exit b144 mode */ 1860 iorq->mode = iorq->mode & (~XD_MODE_B144); 1861 1862 if (iorq->sectcnt) { /* more to go! */ 1863 iorq->lasterror = iorq->errno = iopb->errno = 0; 1864 iopb->errs = iopb->done = 0; 1865 iorq->tries = 0; 1866 iopb->sectcnt = iorq->sectcnt; 1867 iopb->cylno = iorq->blockno / 1868 iorq->xd->sectpercyl; 1869 iopb->headno = 1870 (iorq->blockno / iorq->xd->nhead) % 1871 iorq->xd->nhead; 1872 iopb->sectno = iorq->blockno % XDFM_BPS; 1873 iopb->daddr = 1874 dvma_kvtopa(iorq->dbuf, xdcsc->bustype); 1875 XDC_HWAIT(xdcsc, rqno); 1876 xdc_start(xdcsc, 1); /* resubmit */ 1877 continue; 1878 } 1879 } 1880 /* final cleanup, totally done with this request */ 1881 1882 switch (XD_STATE(iorq->mode)) { 1883 case XD_SUB_NORM: 1884 bp = iorq->buf; 1885 if (errs) { 1886 bp->b_error = EIO; 1887 bp->b_resid = iorq->sectcnt * XDFM_BPS; 1888 } else { 1889 bp->b_resid = 0; /* done */ 1890 } 1891 /* Sun3: map/unmap regardless of B_PHYS */ 1892 dvma_mapout(iorq->dbufbase, 1893 iorq->buf->b_bcount); 1894 disk_unbusy(&iorq->xd->sc_dk, 1895 (bp->b_bcount - bp->b_resid), 1896 (bp->b_flags & B_READ)); 1897 XDC_FREE(xdcsc, rqno); 1898 biodone(bp); 1899 break; 1900 case XD_SUB_WAIT: 1901 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1902 xdcsc->ndone++; 1903 wakeup(iorq); 1904 break; 1905 case XD_SUB_POLL: 1906 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1907 xdcsc->ndone++; 1908 break; 1909 } 1910 } 1911 1912 return (XD_ERR_AOK); 1913 } 1914 1915 /* 1916 * xdc_perror: print error. 1917 * - if still_trying is true: we got an error, retried and got a 1918 * different error. in that case lasterror is the old error, 1919 * and errno is the new one. 1920 * - if still_trying is not true, then if we ever had an error it 1921 * is in lasterror. also, if iorq->errno == 0, then we recovered 1922 * from that error (otherwise iorq->errno == iorq->lasterror). 1923 */ 1924 void 1925 xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 1926 { 1927 1928 int error = iorq->lasterror; 1929 1930 printf("%s", (iorq->xd) ? 1931 iorq->xd->sc_dev.dv_xname : 1932 iorq->xdc->sc_dev.dv_xname); 1933 if (iorq->buf) 1934 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1935 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 1936 printf("%s %d/%d/%d: ", 1937 (iopb->comm == XDCMD_RD) ? "read" : "write", 1938 iopb->cylno, iopb->headno, iopb->sectno); 1939 printf("%s", xdc_e2str(error)); 1940 1941 if (still_trying) 1942 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 1943 else 1944 if (iorq->errno == 0) 1945 printf(" [recovered in %d tries]", iorq->tries); 1946 1947 printf("\n"); 1948 } 1949 1950 /* 1951 * xdc_error: non-fatal error encountered... recover. 1952 * return AOK if resubmitted, return FAIL if this iopb is done 1953 */ 1954 int 1955 xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 1956 int rqno, int comm) 1957 1958 { 1959 int errno = iorq->errno; 1960 int erract = errno & XD_ERA_MASK; 1961 int oldmode, advance, i; 1962 1963 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 1964 oldmode = iorq->mode; 1965 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 1966 xdcsc->ndone++; 1967 /* make xdc_start ignore us */ 1968 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 1969 iorq->mode = oldmode; 1970 xdcsc->ndone--; 1971 } 1972 /* check for read/write to a sector in bad144 table if bad: redirect 1973 * request to bad144 area */ 1974 1975 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 1976 (iorq->mode & XD_MODE_B144) == 0) { 1977 advance = iorq->sectcnt - iopb->sectcnt; 1978 XDC_ADVANCE(iorq, advance); 1979 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 1980 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 1981 iorq->blockno % iorq->xd->nsect)) != -1) { 1982 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 1983 * redirect */ 1984 iopb->errno = iopb->done = iopb->errs = 0; 1985 iopb->sectcnt = 1; 1986 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 1987 /* second to last acyl */ 1988 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 1989 * standard */ 1990 iopb->headno = i / iorq->xd->nhead; 1991 iopb->sectno = i % iorq->xd->nhead; 1992 XDC_HWAIT(xdcsc, rqno); 1993 xdc_start(xdcsc, 1); /* resubmit */ 1994 return (XD_ERR_AOK); /* recovered! */ 1995 } 1996 } 1997 1998 /* 1999 * it isn't a bad144 sector, must be real error! see if we can retry 2000 * it? 2001 */ 2002 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2003 xdc_perror(iorq, iopb, 1); /* inform of error state 2004 * change */ 2005 iorq->lasterror = errno; 2006 2007 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2008 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2009 iorq->tries++; 2010 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2011 XDC_HWAIT(xdcsc, rqno); 2012 xdc_start(xdcsc, 1); /* restart */ 2013 return (XD_ERR_AOK); /* recovered! */ 2014 } 2015 2016 /* failed to recover from this error */ 2017 return (XD_ERR_FAIL); 2018 } 2019 2020 /* 2021 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2022 */ 2023 void 2024 xdc_tick(void *arg) 2025 2026 { 2027 struct xdc_softc *xdcsc = arg; 2028 int lcv, s, reset = 0; 2029 #ifdef XDC_DIAG 2030 int nwait, nrun, nfree, ndone, whd = 0; 2031 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2032 s = splbio(); 2033 nwait = xdcsc->nwait; 2034 nrun = xdcsc->nrun; 2035 nfree = xdcsc->nfree; 2036 ndone = xdcsc->ndone; 2037 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2038 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2039 splx(s); 2040 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2041 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2042 xdcsc->sc_dev.dv_xname, nwait, nfree, nrun, ndone, 2043 XDC_MAXIOPB); 2044 memset(mark, 0, sizeof(mark)); 2045 printf("FREE: "); 2046 for (lcv = nfree; lcv > 0; lcv--) { 2047 printf("%d ", fqc[lcv - 1]); 2048 mark[fqc[lcv - 1]] = 1; 2049 } 2050 printf("\nWAIT: "); 2051 lcv = nwait; 2052 while (lcv > 0) { 2053 printf("%d ", wqc[whd]); 2054 mark[wqc[whd]] = 1; 2055 whd = (whd + 1) % XDC_MAXIOPB; 2056 lcv--; 2057 } 2058 printf("\n"); 2059 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2060 if (mark[lcv] == 0) 2061 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2062 lcv, xdcsc->reqs[lcv].mode, 2063 xdcsc->iopbase[lcv].done, 2064 xdcsc->iopbase[lcv].errs, 2065 xdcsc->iopbase[lcv].errno, 2066 xdcsc->reqs[lcv].ttl, 2067 xdcsc->reqs[lcv].buf); 2068 } 2069 } else 2070 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2071 printf("%s: diag: lots of done jobs (%d)\n", 2072 xdcsc->sc_dev.dv_xname, ndone); 2073 2074 #endif 2075 #ifdef XDC_DEBUG 2076 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2077 xdcsc->sc_dev.dv_xname, 2078 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2079 xdcsc->ndone); 2080 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2081 if (xdcsc->reqs[lcv].mode) 2082 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2083 lcv, 2084 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2085 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2086 } 2087 #endif 2088 2089 /* reduce ttl for each request if one goes to zero, reset xdc */ 2090 s = splbio(); 2091 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2092 if (xdcsc->reqs[lcv].mode == 0 || 2093 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2094 continue; 2095 xdcsc->reqs[lcv].ttl--; 2096 if (xdcsc->reqs[lcv].ttl == 0) 2097 reset = 1; 2098 } 2099 if (reset) { 2100 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2101 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2102 } 2103 splx(s); 2104 2105 /* until next time */ 2106 2107 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2108 } 2109 2110 /* 2111 * xdc_ioctlcmd: this function provides a user level interface to the 2112 * controller via ioctl. this allows "format" programs to be written 2113 * in user code, and is also useful for some debugging. we return 2114 * an error code. called at user priority. 2115 */ 2116 int 2117 xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2118 2119 { 2120 int s, err, rqno; 2121 void *dvmabuf = NULL; 2122 struct xdc_softc *xdcsc; 2123 2124 /* check sanity of requested command */ 2125 2126 switch (xio->cmd) { 2127 2128 case XDCMD_NOP: /* no op: everything should be zero */ 2129 if (xio->subfn || xio->dptr || xio->dlen || 2130 xio->block || xio->sectcnt) 2131 return (EINVAL); 2132 break; 2133 2134 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2135 case XDCMD_WR: 2136 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2137 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2138 return (EINVAL); 2139 break; 2140 2141 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2142 return (EINVAL); 2143 2144 case XDCMD_WRP: /* write parameters */ 2145 return (EINVAL);/* not useful, except maybe drive 2146 * parameters... but drive parameters should 2147 * go via disklabel changes */ 2148 2149 case XDCMD_RDP: /* read parameters */ 2150 if (xio->subfn != XDFUN_DRV || 2151 xio->dlen || xio->block || xio->dptr) 2152 return (EINVAL); /* allow read drive params to 2153 * get hw_spt */ 2154 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2155 return (0); 2156 break; 2157 2158 case XDCMD_XRD: /* extended read/write */ 2159 case XDCMD_XWR: 2160 2161 switch (xio->subfn) { 2162 2163 case XDFUN_THD:/* track headers */ 2164 if (xio->sectcnt != xd->hw_spt || 2165 (xio->block % xd->nsect) != 0 || 2166 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2167 xio->dptr == NULL) 2168 return (EINVAL); 2169 xio->sectcnt = 0; 2170 break; 2171 2172 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2173 if (xio->cmd == XDCMD_XRD) 2174 return (EINVAL); /* no XDFUN_VFY */ 2175 if (xio->sectcnt || xio->dlen || 2176 (xio->block % xd->nsect) != 0 || xio->dptr) 2177 return (EINVAL); 2178 break; 2179 2180 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2181 return (EINVAL); /* not yet */ 2182 2183 case XDFUN_DM: /* defect map */ 2184 case XDFUN_DMX:/* defect map (alternate location) */ 2185 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2186 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2187 return (EINVAL); 2188 break; 2189 2190 default: 2191 return (EINVAL); 2192 } 2193 break; 2194 2195 case XDCMD_TST: /* diagnostics */ 2196 return (EINVAL); 2197 2198 default: 2199 return (EINVAL);/* ??? */ 2200 } 2201 2202 /* create DVMA buffer for request if needed */ 2203 2204 if (xio->dlen) { 2205 dvmabuf = dvma_malloc(xio->dlen); 2206 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2207 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2208 if (err) { 2209 dvma_free(dvmabuf, xio->dlen); 2210 return (err); 2211 } 2212 } 2213 } 2214 /* do it! */ 2215 2216 err = 0; 2217 xdcsc = xd->parent; 2218 s = splbio(); 2219 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2220 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2221 if (rqno == XD_ERR_FAIL) { 2222 err = EIO; 2223 goto done; 2224 } 2225 xio->errno = xdcsc->reqs[rqno].errno; 2226 xio->tries = xdcsc->reqs[rqno].tries; 2227 XDC_DONE(xdcsc, rqno, err); 2228 2229 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2230 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2231 2232 done: 2233 splx(s); 2234 if (dvmabuf) 2235 dvma_free(dvmabuf, xio->dlen); 2236 return (err); 2237 } 2238 2239 /* 2240 * xdc_e2str: convert error code number into an error string 2241 */ 2242 const char * 2243 xdc_e2str(int no) 2244 { 2245 switch (no) { 2246 case XD_ERR_FAIL: 2247 return ("Software fatal error"); 2248 case XD_ERR_AOK: 2249 return ("Successful completion"); 2250 case XD_ERR_ICYL: 2251 return ("Illegal cylinder address"); 2252 case XD_ERR_IHD: 2253 return ("Illegal head address"); 2254 case XD_ERR_ISEC: 2255 return ("Illgal sector address"); 2256 case XD_ERR_CZER: 2257 return ("Count zero"); 2258 case XD_ERR_UIMP: 2259 return ("Unimplemented command"); 2260 case XD_ERR_IF1: 2261 return ("Illegal field length 1"); 2262 case XD_ERR_IF2: 2263 return ("Illegal field length 2"); 2264 case XD_ERR_IF3: 2265 return ("Illegal field length 3"); 2266 case XD_ERR_IF4: 2267 return ("Illegal field length 4"); 2268 case XD_ERR_IF5: 2269 return ("Illegal field length 5"); 2270 case XD_ERR_IF6: 2271 return ("Illegal field length 6"); 2272 case XD_ERR_IF7: 2273 return ("Illegal field length 7"); 2274 case XD_ERR_ISG: 2275 return ("Illegal scatter/gather length"); 2276 case XD_ERR_ISPT: 2277 return ("Not enough sectors per track"); 2278 case XD_ERR_ALGN: 2279 return ("Next IOPB address alignment error"); 2280 case XD_ERR_SGAL: 2281 return ("Scatter/gather address alignment error"); 2282 case XD_ERR_SGEC: 2283 return ("Scatter/gather with auto-ECC"); 2284 case XD_ERR_SECC: 2285 return ("Soft ECC corrected"); 2286 case XD_ERR_SIGN: 2287 return ("ECC ignored"); 2288 case XD_ERR_ASEK: 2289 return ("Auto-seek retry recovered"); 2290 case XD_ERR_RTRY: 2291 return ("Soft retry recovered"); 2292 case XD_ERR_HECC: 2293 return ("Hard data ECC"); 2294 case XD_ERR_NHDR: 2295 return ("Header not found"); 2296 case XD_ERR_NRDY: 2297 return ("Drive not ready"); 2298 case XD_ERR_TOUT: 2299 return ("Operation timeout"); 2300 case XD_ERR_VTIM: 2301 return ("VMEDMA timeout"); 2302 case XD_ERR_DSEQ: 2303 return ("Disk sequencer error"); 2304 case XD_ERR_HDEC: 2305 return ("Header ECC error"); 2306 case XD_ERR_RVFY: 2307 return ("Read verify"); 2308 case XD_ERR_VFER: 2309 return ("Fatail VMEDMA error"); 2310 case XD_ERR_VBUS: 2311 return ("VMEbus error"); 2312 case XD_ERR_DFLT: 2313 return ("Drive faulted"); 2314 case XD_ERR_HECY: 2315 return ("Header error/cyliner"); 2316 case XD_ERR_HEHD: 2317 return ("Header error/head"); 2318 case XD_ERR_NOCY: 2319 return ("Drive not on-cylinder"); 2320 case XD_ERR_SEEK: 2321 return ("Seek error"); 2322 case XD_ERR_ILSS: 2323 return ("Illegal sector size"); 2324 case XD_ERR_SEC: 2325 return ("Soft ECC"); 2326 case XD_ERR_WPER: 2327 return ("Write-protect error"); 2328 case XD_ERR_IRAM: 2329 return ("IRAM self test failure"); 2330 case XD_ERR_MT3: 2331 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2332 case XD_ERR_MT4: 2333 return ("Maintenance test 4 failure (header shift reg)"); 2334 case XD_ERR_MT5: 2335 return ("Maintenance test 5 failure (VMEDMA regs)"); 2336 case XD_ERR_MT6: 2337 return ("Maintenance test 6 failure (REGCEL chip)"); 2338 case XD_ERR_MT7: 2339 return ("Maintenance test 7 failure (buffer parity)"); 2340 case XD_ERR_MT8: 2341 return ("Maintenance test 8 failure (disk FIFO)"); 2342 case XD_ERR_IOCK: 2343 return ("IOPB checksum miscompare"); 2344 case XD_ERR_IODM: 2345 return ("IOPB DMA fatal"); 2346 case XD_ERR_IOAL: 2347 return ("IOPB address alignment error"); 2348 case XD_ERR_FIRM: 2349 return ("Firmware error"); 2350 case XD_ERR_MMOD: 2351 return ("Illegal maintenance mode test number"); 2352 case XD_ERR_ACFL: 2353 return ("ACFAIL asserted"); 2354 default: 2355 return ("Unknown error"); 2356 } 2357 } 2358
Indexes created Fri Sep 26 08:10:20 GMT 2025