1 /* $NetBSD: xd.c,v 1.62 2006/05/15 20:40:55 yamt Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x d . c x y l o g i c s 7 5 3 / 7 0 5 3 v m e / s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck@ccrc.wustl.edu> 39 * started: 27-Feb-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * 45 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 46 * the time to answer some of my questions about the 753/7053. 47 * 48 * note: the 753 and the 7053 are programmed the same way, but are 49 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 50 * VME card (found in many VME based suns). 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xd.c,v 1.62 2006/05/15 20:40:55 yamt Exp $"); 55 56 #undef XDC_DEBUG /* full debug */ 57 #define XDC_DIAG /* extra sanity checks */ 58 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 59 #define XDC_DIAG /* link in with master DIAG option */ 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/proc.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/disk.h> 76 #include <sys/syslog.h> 77 #include <sys/dkbad.h> 78 #include <sys/conf.h> 79 #include <sys/kauth.h> 80 81 #include <machine/bus.h> 82 #include <machine/intr.h> 83 84 #if defined(__sparc__) || defined(sun3) 85 #include <dev/sun/disklabel.h> 86 #endif 87 88 #include <dev/vme/vmereg.h> 89 #include <dev/vme/vmevar.h> 90 91 #include <dev/vme/xdreg.h> 92 #include <dev/vme/xdvar.h> 93 #include <dev/vme/xio.h> 94 95 #include "locators.h" 96 97 /* 98 * macros 99 */ 100 101 /* 102 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 103 */ 104 #define XDC_TWAIT(SC, N) { \ 105 (SC)->waitq[(SC)->waitend] = (N); \ 106 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 107 (SC)->nwait++; \ 108 } 109 110 /* 111 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 112 */ 113 #define XDC_HWAIT(SC, N) { \ 114 (SC)->waithead = ((SC)->waithead == 0) ? \ 115 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 116 (SC)->waitq[(SC)->waithead] = (N); \ 117 (SC)->nwait++; \ 118 } 119 120 /* 121 * XDC_GET_WAITER: gets the first request waiting on the waitq 122 * and removes it (so it can be submitted) 123 */ 124 #define XDC_GET_WAITER(XDCSC, RQ) { \ 125 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 126 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 127 xdcsc->nwait--; \ 128 } 129 130 /* 131 * XDC_FREE: add iorq "N" to SC's free list 132 */ 133 #define XDC_FREE(SC, N) { \ 134 (SC)->freereq[(SC)->nfree++] = (N); \ 135 (SC)->reqs[N].mode = 0; \ 136 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 137 } 138 139 140 /* 141 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 142 */ 143 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 144 145 /* 146 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 147 */ 148 #define XDC_GO(XDC, ADDR) { \ 149 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 150 (ADDR) = ((ADDR) >> 8); \ 151 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 152 (ADDR) = ((ADDR) >> 8); \ 153 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 154 (ADDR) = ((ADDR) >> 8); \ 155 (XDC)->xdc_iopbaddr3 = (ADDR); \ 156 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 157 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 158 } 159 160 /* 161 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 162 * LCV is a counter. If it goes to zero then we timed out. 163 */ 164 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 165 (LCV) = (TIME); \ 166 while ((LCV) > 0) { \ 167 if ((XDC)->xdc_csr & (BITS)) break; \ 168 (LCV) = (LCV) - 1; \ 169 DELAY(1); \ 170 } \ 171 } 172 173 /* 174 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 175 */ 176 #define XDC_DONE(SC,RQ,ER) { \ 177 if ((RQ) == XD_ERR_FAIL) { \ 178 (ER) = (RQ); \ 179 } else { \ 180 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 181 wakeup(&(SC)->ndone); \ 182 (ER) = (SC)->reqs[RQ].errno; \ 183 XDC_FREE((SC), (RQ)); \ 184 } \ 185 } 186 187 /* 188 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 189 */ 190 #define XDC_ADVANCE(IORQ, N) { \ 191 if (N) { \ 192 (IORQ)->sectcnt -= (N); \ 193 (IORQ)->blockno += (N); \ 194 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 195 } \ 196 } 197 198 /* 199 * note - addresses you can sleep on: 200 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 201 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 202 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 203 * to drop below XDC_SUBWAITLIM) 204 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 205 */ 206 207 208 /* 209 * function prototypes 210 * "xdc_*" functions are internal, all others are external interfaces 211 */ 212 213 extern int pil_to_vme[]; /* from obio.c */ 214 215 /* internals */ 216 int xdc_cmd(struct xdc_softc *, int, int, int, int, int, char *, int); 217 const char *xdc_e2str(int); 218 int xdc_error(struct xdc_softc *, struct xd_iorq *, 219 struct xd_iopb *, int, int); 220 int xdc_ioctlcmd(struct xd_softc *, dev_t dev, struct xd_iocmd *); 221 void xdc_perror(struct xd_iorq *, struct xd_iopb *, int); 222 int xdc_piodriver(struct xdc_softc *, int, int); 223 int xdc_remove_iorq(struct xdc_softc *); 224 int xdc_reset(struct xdc_softc *, int, int, int, struct xd_softc *); 225 inline void xdc_rqinit(struct xd_iorq *, struct xdc_softc *, 226 struct xd_softc *, int, u_long, int, 227 caddr_t, struct buf *); 228 void xdc_rqtopb(struct xd_iorq *, struct xd_iopb *, int, int); 229 void xdc_start(struct xdc_softc *, int); 230 int xdc_startbuf(struct xdc_softc *, struct xd_softc *, struct buf *); 231 int xdc_submit_iorq(struct xdc_softc *, int, int); 232 void xdc_tick(void *); 233 void xdc_xdreset(struct xdc_softc *, struct xd_softc *); 234 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 235 int *, bus_size_t, caddr_t *, bus_addr_t *); 236 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 237 int, bus_size_t, caddr_t); 238 239 240 /* machine interrupt hook */ 241 int xdcintr(void *); 242 243 /* autoconf */ 244 int xdcmatch(struct device *, struct cfdata *, void *); 245 void xdcattach(struct device *, struct device *, void *); 246 int xdmatch(struct device *, struct cfdata *, void *); 247 void xdattach(struct device *, struct device *, void *); 248 static int xdc_probe(void *, bus_space_tag_t, bus_space_handle_t); 249 250 static void xddummystrat(struct buf *); 251 int xdgetdisklabel(struct xd_softc *, void *); 252 253 /* XXX - think about this more.. xd_machdep? */ 254 void xdc_md_setup(void); 255 int XDC_DELAY; 256 257 #if defined(__sparc__) 258 #include <sparc/sparc/vaddrs.h> 259 #include <sparc/sparc/cpuvar.h> 260 void xdc_md_setup() 261 { 262 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 263 XDC_DELAY = XDC_DELAY_4_300; 264 else 265 XDC_DELAY = XDC_DELAY_SPARC; 266 } 267 #elif defined(sun3) 268 void xdc_md_setup() 269 { 270 XDC_DELAY = XDC_DELAY_SUN3; 271 } 272 #else 273 void xdc_md_setup() 274 { 275 XDC_DELAY = 0; 276 } 277 #endif 278 279 /* 280 * cfattach's: device driver interface to autoconfig 281 */ 282 283 CFATTACH_DECL(xdc, sizeof(struct xdc_softc), 284 xdcmatch, xdcattach, NULL, NULL); 285 286 CFATTACH_DECL(xd, sizeof(struct xd_softc), 287 xdmatch, xdattach, NULL, NULL); 288 289 extern struct cfdriver xd_cd; 290 291 dev_type_open(xdopen); 292 dev_type_close(xdclose); 293 dev_type_read(xdread); 294 dev_type_write(xdwrite); 295 dev_type_ioctl(xdioctl); 296 dev_type_strategy(xdstrategy); 297 dev_type_dump(xddump); 298 dev_type_size(xdsize); 299 300 const struct bdevsw xd_bdevsw = { 301 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 302 }; 303 304 const struct cdevsw xd_cdevsw = { 305 xdopen, xdclose, xdread, xdwrite, xdioctl, 306 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 307 }; 308 309 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 310 int driveno; /* unit number */ 311 int fullmode; /* submit mode */ 312 int booting; /* are we booting or not? */ 313 }; 314 315 /* 316 * dkdriver 317 */ 318 319 struct dkdriver xddkdriver = {xdstrategy}; 320 321 /* 322 * start: disk label fix code (XXX) 323 */ 324 325 static void *xd_labeldata; 326 327 static void 328 xddummystrat(bp) 329 struct buf *bp; 330 { 331 if (bp->b_bcount != XDFM_BPS) 332 panic("xddummystrat"); 333 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 334 bp->b_flags |= B_DONE; 335 bp->b_flags &= ~B_BUSY; 336 } 337 338 int 339 xdgetdisklabel(xd, b) 340 struct xd_softc *xd; 341 void *b; 342 { 343 const char *err; 344 #if defined(__sparc__) || defined(sun3) 345 struct sun_disklabel *sdl; 346 #endif 347 348 /* We already have the label data in `b'; setup for dummy strategy */ 349 xd_labeldata = b; 350 351 /* Required parameter for readdisklabel() */ 352 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 353 354 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xd->sc_dev), RAW_PART), 355 xddummystrat, 356 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 357 if (err) { 358 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 359 return(XD_ERR_FAIL); 360 } 361 362 #if defined(__sparc__) || defined(sun3) 363 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 364 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 365 if (sdl->sl_magic == SUN_DKMAGIC) { 366 xd->pcyl = sdl->sl_pcylinders; 367 } else 368 #endif 369 { 370 printf("%s: WARNING: no `pcyl' in disk label.\n", 371 xd->sc_dev.dv_xname); 372 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 373 xd->sc_dk.dk_label->d_acylinders; 374 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 375 xd->sc_dev.dv_xname, xd->pcyl); 376 } 377 378 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 379 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 380 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 381 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 382 xd->sectpercyl = xd->nhead * xd->nsect; 383 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 384 * sun->bsd */ 385 return(XD_ERR_AOK); 386 } 387 388 /* 389 * end: disk label fix code (XXX) 390 */ 391 392 /* 393 * Shorthand for allocating, mapping and loading a DMA buffer 394 */ 395 int 396 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 397 bus_dma_tag_t tag; 398 bus_dmamap_t map; 399 bus_dma_segment_t *seg; 400 int *nsegp; 401 bus_size_t len; 402 caddr_t *kvap; 403 bus_addr_t *dmap; 404 { 405 int nseg; 406 int error; 407 408 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 409 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 410 return (error); 411 } 412 413 if ((error = bus_dmamem_map(tag, seg, nseg, 414 len, kvap, 415 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 416 bus_dmamem_free(tag, seg, nseg); 417 return (error); 418 } 419 420 if ((error = bus_dmamap_load(tag, map, 421 *kvap, len, NULL, 422 BUS_DMA_NOWAIT)) != 0) { 423 bus_dmamem_unmap(tag, *kvap, len); 424 bus_dmamem_free(tag, seg, nseg); 425 return (error); 426 } 427 428 *dmap = map->dm_segs[0].ds_addr; 429 *nsegp = nseg; 430 return (0); 431 } 432 433 void 434 xd_dmamem_free(tag, map, seg, nseg, len, kva) 435 bus_dma_tag_t tag; 436 bus_dmamap_t map; 437 bus_dma_segment_t *seg; 438 int nseg; 439 bus_size_t len; 440 caddr_t kva; 441 { 442 443 bus_dmamap_unload(tag, map); 444 bus_dmamem_unmap(tag, kva, len); 445 bus_dmamem_free(tag, seg, nseg); 446 } 447 448 449 /* 450 * a u t o c o n f i g f u n c t i o n s 451 */ 452 453 /* 454 * xdcmatch: determine if xdc is present or not. we do a 455 * soft reset to detect the xdc. 456 */ 457 458 int 459 xdc_probe(arg, tag, handle) 460 void *arg; 461 bus_space_tag_t tag; 462 bus_space_handle_t handle; 463 { 464 struct xdc *xdc = (void *)handle; /* XXX */ 465 int del = 0; 466 467 xdc->xdc_csr = XDC_RESET; 468 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 469 return (del > 0 ? 0 : EIO); 470 } 471 472 int xdcmatch(parent, cf, aux) 473 struct device *parent; 474 struct cfdata *cf; 475 void *aux; 476 { 477 struct vme_attach_args *va = aux; 478 vme_chipset_tag_t ct = va->va_vct; 479 vme_am_t mod; 480 int error; 481 482 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 483 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 484 return (0); 485 486 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 487 mod, VME_D32, xdc_probe, 0); 488 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 489 490 return (error == 0); 491 } 492 493 /* 494 * xdcattach: attach controller 495 */ 496 void 497 xdcattach(parent, self, aux) 498 struct device *parent, *self; 499 void *aux; 500 501 { 502 struct vme_attach_args *va = aux; 503 vme_chipset_tag_t ct = va->va_vct; 504 bus_space_tag_t bt; 505 bus_space_handle_t bh; 506 vme_intr_handle_t ih; 507 vme_am_t mod; 508 struct xdc_softc *xdc = (void *) self; 509 struct xdc_attach_args xa; 510 int lcv, rqno, error; 511 struct xd_iopb_ctrl *ctl; 512 bus_dma_segment_t seg; 513 int rseg; 514 vme_mapresc_t resc; 515 bus_addr_t busaddr; 516 517 xdc_md_setup(); 518 519 /* get addressing and intr level stuff from autoconfig and load it 520 * into our xdc_softc. */ 521 522 xdc->dmatag = va->va_bdt; 523 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 524 525 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 526 panic("xdc: vme alloc"); 527 528 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 529 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 530 panic("xdc: vme_map"); 531 532 xdc->xdc = (struct xdc *) bh; /* XXX */ 533 xdc->ipl = va->ilevel; 534 xdc->vector = va->ivector; 535 536 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 537 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 538 539 /* 540 * allocate and zero buffers 541 * 542 * note: we simplify the code by allocating the max number of iopbs and 543 * iorq's up front. thus, we avoid linked lists and the costs 544 * associated with them in exchange for wasting a little memory. 545 */ 546 547 /* Get DMA handle for misc. transfers */ 548 if ((error = vme_dmamap_create( 549 ct, /* VME chip tag */ 550 MAXPHYS, /* size */ 551 VME_AM_A24, /* address modifier */ 552 VME_D32, /* data size */ 553 0, /* swap */ 554 1, /* nsegments */ 555 MAXPHYS, /* maxsegsz */ 556 0, /* boundary */ 557 BUS_DMA_NOWAIT, 558 &xdc->auxmap)) != 0) { 559 560 printf("%s: DMA buffer map create error %d\n", 561 xdc->sc_dev.dv_xname, error); 562 return; 563 } 564 565 566 /* Get DMA handle for mapping iorq descriptors */ 567 if ((error = vme_dmamap_create( 568 ct, /* VME chip tag */ 569 XDC_MAXIOPB * sizeof(struct xd_iopb), 570 VME_AM_A24, /* address modifier */ 571 VME_D32, /* data size */ 572 0, /* swap */ 573 1, /* nsegments */ 574 XDC_MAXIOPB * sizeof(struct xd_iopb), 575 0, /* boundary */ 576 BUS_DMA_NOWAIT, 577 &xdc->iopmap)) != 0) { 578 579 printf("%s: DMA buffer map create error %d\n", 580 xdc->sc_dev.dv_xname, error); 581 return; 582 } 583 584 /* Get DMA buffer for iorq descriptors */ 585 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 586 XDC_MAXIOPB * sizeof(struct xd_iopb), 587 (caddr_t *)&xdc->iopbase, 588 &busaddr)) != 0) { 589 printf("%s: DMA buffer alloc error %d\n", 590 xdc->sc_dev.dv_xname, error); 591 return; 592 } 593 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 594 595 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 596 597 xdc->reqs = (struct xd_iorq *) 598 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 599 M_DEVBUF, M_NOWAIT|M_ZERO); 600 if (xdc->reqs == NULL) 601 panic("xdc malloc"); 602 603 /* init free list, iorq to iopb pointers, and non-zero fields in the 604 * iopb which never change. */ 605 606 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 607 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 608 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 609 xdc->freereq[lcv] = lcv; 610 xdc->iopbase[lcv].fixd = 1; /* always the same */ 611 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 612 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 613 614 if ((error = vme_dmamap_create( 615 ct, /* VME chip tag */ 616 MAXPHYS, /* size */ 617 VME_AM_A24, /* address modifier */ 618 VME_D32, /* data size */ 619 0, /* swap */ 620 1, /* nsegments */ 621 MAXPHYS, /* maxsegsz */ 622 0, /* boundary */ 623 BUS_DMA_NOWAIT, 624 &xdc->reqs[lcv].dmamap)) != 0) { 625 626 printf("%s: DMA buffer map create error %d\n", 627 xdc->sc_dev.dv_xname, error); 628 return; 629 } 630 } 631 xdc->nfree = XDC_MAXIOPB; 632 xdc->nrun = 0; 633 xdc->waithead = xdc->waitend = xdc->nwait = 0; 634 xdc->ndone = 0; 635 636 /* init queue of waiting bufs */ 637 638 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 639 callout_init(&xdc->sc_tick_ch); 640 641 /* 642 * section 7 of the manual tells us how to init the controller: 643 * - read controller parameters (6/0) 644 * - write controller parameters (5/0) 645 */ 646 647 /* read controller parameters and insure we have a 753/7053 */ 648 649 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 650 if (rqno == XD_ERR_FAIL) { 651 printf(": couldn't read controller params\n"); 652 return; /* shouldn't ever happen */ 653 } 654 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 655 if (ctl->ctype != XDCT_753) { 656 if (xdc->reqs[rqno].errno) 657 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 658 printf(": doesn't identify as a 753/7053\n"); 659 XDC_DONE(xdc, rqno, error); 660 return; 661 } 662 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 663 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 664 XDC_DONE(xdc, rqno, error); 665 666 /* now write controller parameters (xdc_cmd sets all params for us) */ 667 668 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 669 XDC_DONE(xdc, rqno, error); 670 if (error) { 671 printf("%s: controller config error: %s\n", 672 xdc->sc_dev.dv_xname, xdc_e2str(error)); 673 return; 674 } 675 676 /* link in interrupt with higher level software */ 677 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 678 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 679 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 680 xdc->sc_dev.dv_xname, "intr"); 681 682 683 /* now we must look for disks using autoconfig */ 684 xa.fullmode = XD_SUB_POLL; 685 xa.booting = 1; 686 687 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 688 (void) config_found(self, (void *) &xa, NULL); 689 690 /* start the watchdog clock */ 691 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 692 693 } 694 695 /* 696 * xdmatch: probe for disk. 697 * 698 * note: we almost always say disk is present. this allows us to 699 * spin up and configure a disk after the system is booted (we can 700 * call xdattach!). 701 */ 702 int 703 xdmatch(parent, cf, aux) 704 struct device *parent; 705 struct cfdata *cf; 706 void *aux; 707 { 708 struct xdc_attach_args *xa = aux; 709 710 /* looking for autoconf wildcard or exact match */ 711 712 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 713 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 714 return 0; 715 716 return 1; 717 718 } 719 720 /* 721 * xdattach: attach a disk. this can be called from autoconf and also 722 * from xdopen/xdstrategy. 723 */ 724 void 725 xdattach(parent, self, aux) 726 struct device *parent, *self; 727 void *aux; 728 729 { 730 struct xd_softc *xd = (void *) self; 731 struct xdc_softc *xdc = (void *) parent; 732 struct xdc_attach_args *xa = aux; 733 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 734 struct xd_iopb_drive *driopb; 735 struct dkbad *dkb; 736 int rseg, error; 737 bus_dma_segment_t seg; 738 bus_addr_t busaddr; 739 caddr_t dmaddr; 740 caddr_t buf; 741 742 /* 743 * Always re-initialize the disk structure. We want statistics 744 * to start with a clean slate. 745 */ 746 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 747 xd->sc_dk.dk_driver = &xddkdriver; 748 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 749 750 /* if booting, init the xd_softc */ 751 752 if (xa->booting) { 753 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 754 xd->flags = 0; 755 xd->parent = xdc; 756 } 757 xd->xd_drive = xa->driveno; 758 fmode = xa->fullmode; 759 xdc->sc_drives[xa->driveno] = xd; 760 761 /* if not booting, make sure we are the only process in the attach for 762 * this drive. if locked out, sleep on it. */ 763 764 if (!xa->booting) { 765 s = splbio(); 766 while (xd->state == XD_DRIVE_ATTACHING) { 767 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 768 splx(s); 769 return; 770 } 771 } 772 printf("%s at %s", 773 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 774 } 775 776 /* we now have control */ 777 xd->state = XD_DRIVE_ATTACHING; 778 newstate = XD_DRIVE_UNKNOWN; 779 780 buf = NULL; 781 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 782 XDFM_BPS, 783 (caddr_t *)&buf, 784 &busaddr)) != 0) { 785 printf("%s: DMA buffer alloc error %d\n", 786 xdc->sc_dev.dv_xname, error); 787 return; 788 } 789 dmaddr = (caddr_t)(u_long)BUS_ADDR_PADDR(busaddr); 790 791 /* first try and reset the drive */ 792 793 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 794 XDC_DONE(xdc, rqno, error); 795 if (error == XD_ERR_NRDY) { 796 printf(" drive %d: off-line\n", xa->driveno); 797 goto done; 798 } 799 if (error) { 800 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 801 goto done; 802 } 803 printf(" drive %d: ready\n", xa->driveno); 804 805 /* now set format parameters */ 806 807 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 808 XDC_DONE(xdc, rqno, error); 809 if (error) { 810 printf("%s: write format parameters failed: %s\n", 811 xd->sc_dev.dv_xname, xdc_e2str(error)); 812 goto done; 813 } 814 815 /* get drive parameters */ 816 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 817 if (rqno != XD_ERR_FAIL) { 818 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 819 spt = driopb->sectpertrk; 820 } 821 XDC_DONE(xdc, rqno, error); 822 if (error) { 823 printf("%s: read drive parameters failed: %s\n", 824 xd->sc_dev.dv_xname, xdc_e2str(error)); 825 goto done; 826 } 827 828 /* 829 * now set drive parameters (to semi-bogus values) so we can read the 830 * disk label. 831 */ 832 xd->pcyl = xd->ncyl = 1; 833 xd->acyl = 0; 834 xd->nhead = 1; 835 xd->nsect = 1; 836 xd->sectpercyl = 1; 837 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 838 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 839 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 840 XDC_DONE(xdc, rqno, error); 841 if (error) { 842 printf("%s: write drive parameters failed: %s\n", 843 xd->sc_dev.dv_xname, xdc_e2str(error)); 844 goto done; 845 } 846 847 /* read disk label */ 848 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 849 XDC_DONE(xdc, rqno, error); 850 if (error) { 851 printf("%s: reading disk label failed: %s\n", 852 xd->sc_dev.dv_xname, xdc_e2str(error)); 853 goto done; 854 } 855 newstate = XD_DRIVE_NOLABEL; 856 857 xd->hw_spt = spt; 858 /* Attach the disk: must be before getdisklabel to malloc label */ 859 disk_attach(&xd->sc_dk); 860 861 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 862 goto done; 863 864 /* inform the user of what is up */ 865 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 866 buf, xd->pcyl, spt); 867 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 868 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 869 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 870 XDFM_BPS); 871 872 /* now set the real drive parameters! */ 873 874 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 875 XDC_DONE(xdc, rqno, error); 876 if (error) { 877 printf("%s: write real drive parameters failed: %s\n", 878 xd->sc_dev.dv_xname, xdc_e2str(error)); 879 goto done; 880 } 881 newstate = XD_DRIVE_ONLINE; 882 883 /* 884 * read bad144 table. this table resides on the first sector of the 885 * last track of the disk (i.e. second cyl of "acyl" area). 886 */ 887 888 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 889 (xd->nhead - 1) * xd->nsect; /* last head */ 890 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 891 XDC_DONE(xdc, rqno, error); 892 if (error) { 893 printf("%s: reading bad144 failed: %s\n", 894 xd->sc_dev.dv_xname, xdc_e2str(error)); 895 goto done; 896 } 897 898 /* check dkbad for sanity */ 899 dkb = (struct dkbad *) buf; 900 for (lcv = 0; lcv < 126; lcv++) { 901 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 902 dkb->bt_bad[lcv].bt_cyl == 0) && 903 dkb->bt_bad[lcv].bt_trksec == 0xffff) 904 continue; /* blank */ 905 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 906 break; 907 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 908 break; 909 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 910 break; 911 } 912 if (lcv != 126) { 913 printf("%s: warning: invalid bad144 sector!\n", 914 xd->sc_dev.dv_xname); 915 } else { 916 bcopy(buf, &xd->dkb, XDFM_BPS); 917 } 918 919 done: 920 if (buf != NULL) { 921 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 922 &seg, rseg, XDFM_BPS, buf); 923 } 924 925 xd->state = newstate; 926 if (!xa->booting) { 927 wakeup(&xd->state); 928 splx(s); 929 } 930 } 931 932 /* 933 * end of autoconfig functions 934 */ 935 936 /* 937 * { b , c } d e v s w f u n c t i o n s 938 */ 939 940 /* 941 * xdclose: close device 942 */ 943 int 944 xdclose(dev, flag, fmt, l) 945 dev_t dev; 946 int flag, fmt; 947 struct lwp *l; 948 { 949 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 950 int part = DISKPART(dev); 951 952 /* clear mask bits */ 953 954 switch (fmt) { 955 case S_IFCHR: 956 xd->sc_dk.dk_copenmask &= ~(1 << part); 957 break; 958 case S_IFBLK: 959 xd->sc_dk.dk_bopenmask &= ~(1 << part); 960 break; 961 } 962 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 963 964 return 0; 965 } 966 967 /* 968 * xddump: crash dump system 969 */ 970 int 971 xddump(dev, blkno, va, size) 972 dev_t dev; 973 daddr_t blkno; 974 caddr_t va; 975 size_t size; 976 { 977 int unit, part; 978 struct xd_softc *xd; 979 980 unit = DISKUNIT(dev); 981 if (unit >= xd_cd.cd_ndevs) 982 return ENXIO; 983 part = DISKPART(dev); 984 985 xd = xd_cd.cd_devs[unit]; 986 987 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 988 'a' + part); 989 990 return ENXIO; 991 992 /* outline: globals: "dumplo" == sector number of partition to start 993 * dump at (convert to physical sector with partition table) 994 * "dumpsize" == size of dump in clicks "physmem" == size of physical 995 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 996 * physmem) 997 * 998 * dump a copy of physical memory to the dump device starting at sector 999 * "dumplo" in the swap partition (make sure > 0). map in pages as 1000 * we go. use polled I/O. 1001 * 1002 * XXX how to handle NON_CONTIG? */ 1003 1004 } 1005 1006 /* 1007 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1008 */ 1009 int 1010 xdioctl(dev, command, addr, flag, l) 1011 dev_t dev; 1012 u_long command; 1013 caddr_t addr; 1014 int flag; 1015 struct lwp *l; 1016 1017 { 1018 struct xd_softc *xd; 1019 struct xd_iocmd *xio; 1020 int error, s, unit; 1021 #ifdef __HAVE_OLD_DISKLABEL 1022 struct disklabel newlabel; 1023 #endif 1024 struct disklabel *lp; 1025 1026 unit = DISKUNIT(dev); 1027 1028 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1029 return (ENXIO); 1030 1031 /* switch on ioctl type */ 1032 1033 switch (command) { 1034 case DIOCSBAD: /* set bad144 info */ 1035 if ((flag & FWRITE) == 0) 1036 return EBADF; 1037 s = splbio(); 1038 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1039 splx(s); 1040 return 0; 1041 1042 case DIOCGDINFO: /* get disk label */ 1043 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1044 return 0; 1045 #ifdef __HAVE_OLD_DISKLABEL 1046 case ODIOCGDINFO: 1047 newlabel = *(xd->sc_dk.dk_label); 1048 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1049 return ENOTTY; 1050 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1051 return 0; 1052 #endif 1053 1054 case DIOCGPART: /* get partition info */ 1055 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1056 ((struct partinfo *) addr)->part = 1057 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1058 return 0; 1059 1060 case DIOCSDINFO: /* set disk label */ 1061 #ifdef __HAVE_OLD_DISKLABEL 1062 case ODIOCSDINFO: 1063 if (command == ODIOCSDINFO) { 1064 memset(&newlabel, 0, sizeof newlabel); 1065 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1066 lp = &newlabel; 1067 } else 1068 #endif 1069 lp = (struct disklabel *)addr; 1070 1071 if ((flag & FWRITE) == 0) 1072 return EBADF; 1073 error = setdisklabel(xd->sc_dk.dk_label, 1074 lp, /* xd->sc_dk.dk_openmask : */ 0, 1075 xd->sc_dk.dk_cpulabel); 1076 if (error == 0) { 1077 if (xd->state == XD_DRIVE_NOLABEL) 1078 xd->state = XD_DRIVE_ONLINE; 1079 } 1080 return error; 1081 1082 case DIOCWLABEL: /* change write status of disk label */ 1083 if ((flag & FWRITE) == 0) 1084 return EBADF; 1085 if (*(int *) addr) 1086 xd->flags |= XD_WLABEL; 1087 else 1088 xd->flags &= ~XD_WLABEL; 1089 return 0; 1090 1091 case DIOCWDINFO: /* write disk label */ 1092 #ifdef __HAVE_OLD_DISKLABEL 1093 case ODIOCWDINFO: 1094 if (command == ODIOCWDINFO) { 1095 memset(&newlabel, 0, sizeof newlabel); 1096 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1097 lp = &newlabel; 1098 } else 1099 #endif 1100 lp = (struct disklabel *)addr; 1101 1102 if ((flag & FWRITE) == 0) 1103 return EBADF; 1104 error = setdisklabel(xd->sc_dk.dk_label, 1105 lp, /* xd->sc_dk.dk_openmask : */ 0, 1106 xd->sc_dk.dk_cpulabel); 1107 if (error == 0) { 1108 if (xd->state == XD_DRIVE_NOLABEL) 1109 xd->state = XD_DRIVE_ONLINE; 1110 1111 /* Simulate opening partition 0 so write succeeds. */ 1112 xd->sc_dk.dk_openmask |= (1 << 0); 1113 error = writedisklabel(MAKEDISKDEV(major(dev), 1114 DISKUNIT(dev), RAW_PART), 1115 xdstrategy, xd->sc_dk.dk_label, 1116 xd->sc_dk.dk_cpulabel); 1117 xd->sc_dk.dk_openmask = 1118 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1119 } 1120 return error; 1121 1122 case DIOSXDCMD: 1123 xio = (struct xd_iocmd *) addr; 1124 if ((error = kauth_authorize_generic(l->l_proc->p_cred, 1125 KAUTH_GENERIC_ISSUSER, &l->l_proc->p_acflag)) != 0) 1126 return (error); 1127 return (xdc_ioctlcmd(xd, dev, xio)); 1128 1129 default: 1130 return ENOTTY; 1131 } 1132 } 1133 /* 1134 * xdopen: open drive 1135 */ 1136 1137 int 1138 xdopen(dev, flag, fmt, l) 1139 dev_t dev; 1140 int flag, fmt; 1141 struct lwp *l; 1142 { 1143 int unit, part; 1144 struct xd_softc *xd; 1145 struct xdc_attach_args xa; 1146 1147 /* first, could it be a valid target? */ 1148 1149 unit = DISKUNIT(dev); 1150 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1151 return (ENXIO); 1152 part = DISKPART(dev); 1153 1154 /* do we need to attach the drive? */ 1155 1156 if (xd->state == XD_DRIVE_UNKNOWN) { 1157 xa.driveno = xd->xd_drive; 1158 xa.fullmode = XD_SUB_WAIT; 1159 xa.booting = 0; 1160 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1161 if (xd->state == XD_DRIVE_UNKNOWN) { 1162 return (EIO); 1163 } 1164 } 1165 /* check for partition */ 1166 1167 if (part != RAW_PART && 1168 (part >= xd->sc_dk.dk_label->d_npartitions || 1169 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1170 return (ENXIO); 1171 } 1172 /* set open masks */ 1173 1174 switch (fmt) { 1175 case S_IFCHR: 1176 xd->sc_dk.dk_copenmask |= (1 << part); 1177 break; 1178 case S_IFBLK: 1179 xd->sc_dk.dk_bopenmask |= (1 << part); 1180 break; 1181 } 1182 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1183 1184 return 0; 1185 } 1186 1187 int 1188 xdread(dev, uio, flags) 1189 dev_t dev; 1190 struct uio *uio; 1191 int flags; 1192 { 1193 1194 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1195 } 1196 1197 int 1198 xdwrite(dev, uio, flags) 1199 dev_t dev; 1200 struct uio *uio; 1201 int flags; 1202 { 1203 1204 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1205 } 1206 1207 1208 /* 1209 * xdsize: return size of a partition for a dump 1210 */ 1211 1212 int 1213 xdsize(dev) 1214 dev_t dev; 1215 1216 { 1217 struct xd_softc *xdsc; 1218 int unit, part, size, omask; 1219 1220 /* valid unit? */ 1221 unit = DISKUNIT(dev); 1222 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1223 return (-1); 1224 1225 part = DISKPART(dev); 1226 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1227 1228 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1229 return (-1); 1230 1231 /* do it */ 1232 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1233 size = -1; /* only give valid size for swap partitions */ 1234 else 1235 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1236 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1237 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1238 return (-1); 1239 return (size); 1240 } 1241 /* 1242 * xdstrategy: buffering system interface to xd. 1243 */ 1244 1245 void 1246 xdstrategy(bp) 1247 struct buf *bp; 1248 1249 { 1250 struct xd_softc *xd; 1251 struct xdc_softc *parent; 1252 int s, unit; 1253 struct xdc_attach_args xa; 1254 1255 unit = DISKUNIT(bp->b_dev); 1256 1257 /* check for live device */ 1258 1259 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1260 bp->b_blkno < 0 || 1261 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1262 bp->b_error = EINVAL; 1263 goto bad; 1264 } 1265 /* do we need to attach the drive? */ 1266 1267 if (xd->state == XD_DRIVE_UNKNOWN) { 1268 xa.driveno = xd->xd_drive; 1269 xa.fullmode = XD_SUB_WAIT; 1270 xa.booting = 0; 1271 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1272 if (xd->state == XD_DRIVE_UNKNOWN) { 1273 bp->b_error = EIO; 1274 goto bad; 1275 } 1276 } 1277 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1278 /* no I/O to unlabeled disks, unless raw partition */ 1279 bp->b_error = EIO; 1280 goto bad; 1281 } 1282 /* short circuit zero length request */ 1283 1284 if (bp->b_bcount == 0) 1285 goto done; 1286 1287 /* check bounds with label (disksubr.c). Determine the size of the 1288 * transfer, and make sure it is within the boundaries of the 1289 * partition. Adjust transfer if needed, and signal errors or early 1290 * completion. */ 1291 1292 if (bounds_check_with_label(&xd->sc_dk, bp, 1293 (xd->flags & XD_WLABEL) != 0) <= 0) 1294 goto done; 1295 1296 /* 1297 * now we know we have a valid buf structure that we need to do I/O 1298 * on. 1299 * 1300 * note that we don't disksort because the controller has a sorting 1301 * algorithm built into the hardware. 1302 */ 1303 1304 s = splbio(); /* protect the queues */ 1305 1306 /* first, give jobs in front of us a chance */ 1307 parent = xd->parent; 1308 while (parent->nfree > 0 && BUFQ_PEEK(parent->sc_wq) != NULL) 1309 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1310 break; 1311 1312 /* if there are no free iorq's, then we just queue and return. the 1313 * buffs will get picked up later by xdcintr(). 1314 */ 1315 1316 if (parent->nfree == 0) { 1317 BUFQ_PUT(parent->sc_wq, bp); 1318 splx(s); 1319 return; 1320 } 1321 1322 /* now we have free iopb's and we are at splbio... start 'em up */ 1323 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1324 return; 1325 } 1326 1327 /* done! */ 1328 1329 splx(s); 1330 return; 1331 1332 bad: /* tells upper layers we have an error */ 1333 bp->b_flags |= B_ERROR; 1334 done: /* tells upper layers we are done with this 1335 * buf */ 1336 bp->b_resid = bp->b_bcount; 1337 biodone(bp); 1338 } 1339 /* 1340 * end of {b,c}devsw functions 1341 */ 1342 1343 /* 1344 * i n t e r r u p t f u n c t i o n 1345 * 1346 * xdcintr: hardware interrupt. 1347 */ 1348 int 1349 xdcintr(v) 1350 void *v; 1351 1352 { 1353 struct xdc_softc *xdcsc = v; 1354 1355 /* kick the event counter */ 1356 1357 xdcsc->sc_intrcnt.ev_count++; 1358 1359 /* remove as many done IOPBs as possible */ 1360 1361 xdc_remove_iorq(xdcsc); 1362 1363 /* start any iorq's already waiting */ 1364 1365 xdc_start(xdcsc, XDC_MAXIOPB); 1366 1367 /* fill up any remaining iorq's with queue'd buffers */ 1368 1369 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1370 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1371 break; 1372 1373 return (1); 1374 } 1375 /* 1376 * end of interrupt function 1377 */ 1378 1379 /* 1380 * i n t e r n a l f u n c t i o n s 1381 */ 1382 1383 /* 1384 * xdc_rqinit: fill out the fields of an I/O request 1385 */ 1386 1387 inline void 1388 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1389 struct xd_iorq *rq; 1390 struct xdc_softc *xdc; 1391 struct xd_softc *xd; 1392 int md; 1393 u_long blk; 1394 int cnt; 1395 caddr_t db; 1396 struct buf *bp; 1397 { 1398 rq->xdc = xdc; 1399 rq->xd = xd; 1400 rq->ttl = XDC_MAXTTL + 10; 1401 rq->mode = md; 1402 rq->tries = rq->errno = rq->lasterror = 0; 1403 rq->blockno = blk; 1404 rq->sectcnt = cnt; 1405 rq->dbuf = db; 1406 rq->buf = bp; 1407 } 1408 /* 1409 * xdc_rqtopb: load up an IOPB based on an iorq 1410 */ 1411 1412 void 1413 xdc_rqtopb(iorq, iopb, cmd, subfun) 1414 struct xd_iorq *iorq; 1415 struct xd_iopb *iopb; 1416 int cmd, subfun; 1417 1418 { 1419 u_long block, dp; 1420 1421 /* standard stuff */ 1422 1423 iopb->errs = iopb->done = 0; 1424 iopb->comm = cmd; 1425 iopb->errno = iopb->status = 0; 1426 iopb->subfun = subfun; 1427 if (iorq->xd) 1428 iopb->unit = iorq->xd->xd_drive; 1429 else 1430 iopb->unit = 0; 1431 1432 /* check for alternate IOPB format */ 1433 1434 if (cmd == XDCMD_WRP) { 1435 switch (subfun) { 1436 case XDFUN_CTL:{ 1437 struct xd_iopb_ctrl *ctrl = 1438 (struct xd_iopb_ctrl *) iopb; 1439 iopb->lll = 0; 1440 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1441 ? 0 1442 : iorq->xdc->ipl; 1443 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1444 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1445 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1446 XDPC_RBC | XDPC_ECC2; 1447 ctrl->throttle = XDC_THROTTLE; 1448 ctrl->delay = XDC_DELAY; 1449 break; 1450 } 1451 case XDFUN_DRV:{ 1452 struct xd_iopb_drive *drv = 1453 (struct xd_iopb_drive *)iopb; 1454 /* we assume that the disk label has the right 1455 * info */ 1456 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1457 drv->dparam_ipl = (XDC_DPARAM << 3); 1458 else 1459 drv->dparam_ipl = (XDC_DPARAM << 3) | 1460 iorq->xdc->ipl; 1461 drv->maxsect = iorq->xd->nsect - 1; 1462 drv->maxsector = drv->maxsect; 1463 /* note: maxsector != maxsect only if you are 1464 * doing cyl sparing */ 1465 drv->headoff = 0; 1466 drv->maxcyl = iorq->xd->pcyl - 1; 1467 drv->maxhead = iorq->xd->nhead - 1; 1468 break; 1469 } 1470 case XDFUN_FMT:{ 1471 struct xd_iopb_format *form = 1472 (struct xd_iopb_format *) iopb; 1473 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1474 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1475 else 1476 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1477 iorq->xdc->ipl; 1478 form->field1 = XDFM_FIELD1; 1479 form->field2 = XDFM_FIELD2; 1480 form->field3 = XDFM_FIELD3; 1481 form->field4 = XDFM_FIELD4; 1482 form->bytespersec = XDFM_BPS; 1483 form->field6 = XDFM_FIELD6; 1484 form->field7 = XDFM_FIELD7; 1485 break; 1486 } 1487 } 1488 } else { 1489 1490 /* normal IOPB case (harmless to RDP command) */ 1491 1492 iopb->lll = 0; 1493 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1494 ? 0 1495 : iorq->xdc->ipl; 1496 iopb->sectcnt = iorq->sectcnt; 1497 block = iorq->blockno; 1498 if (iorq->xd == NULL || block == 0) { 1499 iopb->sectno = iopb->headno = iopb->cylno = 0; 1500 } else { 1501 iopb->sectno = block % iorq->xd->nsect; 1502 block = block / iorq->xd->nsect; 1503 iopb->headno = block % iorq->xd->nhead; 1504 block = block / iorq->xd->nhead; 1505 iopb->cylno = block; 1506 } 1507 dp = (u_long) iorq->dbuf; 1508 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1509 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1510 ? XDC_ADDRMOD32 1511 : XDC_ADDRMOD; 1512 } 1513 } 1514 1515 /* 1516 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1517 * If you've already got an IORQ, you can call submit directly (currently 1518 * there is no need to do this). NORM requests are handled separately. 1519 */ 1520 int 1521 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1522 struct xdc_softc *xdcsc; 1523 int cmd, subfn, unit, block, scnt; 1524 char *dptr; 1525 int fullmode; 1526 1527 { 1528 int rqno, submode = XD_STATE(fullmode), retry; 1529 struct xd_iorq *iorq; 1530 struct xd_iopb *iopb; 1531 1532 /* get iorq/iopb */ 1533 switch (submode) { 1534 case XD_SUB_POLL: 1535 while (xdcsc->nfree == 0) { 1536 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1537 return (XD_ERR_FAIL); 1538 } 1539 break; 1540 case XD_SUB_WAIT: 1541 retry = 1; 1542 while (retry) { 1543 while (xdcsc->nfree == 0) { 1544 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1545 return (XD_ERR_FAIL); 1546 } 1547 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1548 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1549 return (XD_ERR_FAIL); 1550 } 1551 if (xdcsc->nfree) 1552 retry = 0; /* got it */ 1553 } 1554 break; 1555 default: 1556 return (XD_ERR_FAIL); /* illegal */ 1557 } 1558 if (xdcsc->nfree == 0) 1559 panic("xdcmd nfree"); 1560 rqno = XDC_RQALLOC(xdcsc); 1561 iorq = &xdcsc->reqs[rqno]; 1562 iopb = iorq->iopb; 1563 1564 1565 /* init iorq/iopb */ 1566 1567 xdc_rqinit(iorq, xdcsc, 1568 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1569 fullmode, block, scnt, dptr, NULL); 1570 1571 /* load IOPB from iorq */ 1572 1573 xdc_rqtopb(iorq, iopb, cmd, subfn); 1574 1575 /* submit it for processing */ 1576 1577 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1578 1579 return (rqno); 1580 } 1581 /* 1582 * xdc_startbuf 1583 * start a buffer running, assumes nfree > 0 1584 */ 1585 1586 int 1587 xdc_startbuf(xdcsc, xdsc, bp) 1588 struct xdc_softc *xdcsc; 1589 struct xd_softc *xdsc; 1590 struct buf *bp; 1591 1592 { 1593 int rqno, partno; 1594 struct xd_iorq *iorq; 1595 struct xd_iopb *iopb; 1596 u_long block; 1597 /* caddr_t dbuf;*/ 1598 int error; 1599 1600 if (!xdcsc->nfree) 1601 panic("xdc_startbuf free"); 1602 rqno = XDC_RQALLOC(xdcsc); 1603 iorq = &xdcsc->reqs[rqno]; 1604 iopb = iorq->iopb; 1605 1606 /* get buf */ 1607 1608 if (bp == NULL) { 1609 bp = BUFQ_GET(xdcsc->sc_wq); 1610 if (bp == NULL) 1611 panic("xdc_startbuf bp"); 1612 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1613 } 1614 partno = DISKPART(bp->b_dev); 1615 #ifdef XDC_DEBUG 1616 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1617 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1618 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1619 bp->b_bcount, bp->b_data); 1620 #endif 1621 1622 /* 1623 * load request. we have to calculate the correct block number based 1624 * on partition info. 1625 * 1626 * note that iorq points to the buffer as mapped into DVMA space, 1627 * where as the bp->b_data points to its non-DVMA mapping. 1628 */ 1629 1630 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1631 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1632 1633 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1634 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1635 if (error != 0) { 1636 printf("%s: warning: cannot load DMA map\n", 1637 xdcsc->sc_dev.dv_xname); 1638 XDC_FREE(xdcsc, rqno); 1639 BUFQ_PUT(xdcsc->sc_wq, bp); 1640 return (XD_ERR_FAIL); /* XXX: need some sort of 1641 * call-back scheme here? */ 1642 } 1643 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1644 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1645 ? BUS_DMASYNC_PREREAD 1646 : BUS_DMASYNC_PREWRITE); 1647 1648 /* init iorq and load iopb from it */ 1649 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1650 bp->b_bcount / XDFM_BPS, 1651 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1652 bp); 1653 1654 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1655 1656 /* Instrumentation. */ 1657 disk_busy(&xdsc->sc_dk); 1658 1659 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1660 1661 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1662 return (XD_ERR_AOK); 1663 } 1664 1665 1666 /* 1667 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1668 * if ok. if it fail returns an error code. type is XD_SUB_*. 1669 * 1670 * note: caller frees iorq in all cases except NORM 1671 * 1672 * return value: 1673 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1674 * WAIT: XD_AOK (success), <error-code> (failed) 1675 * POLL: <same as WAIT> 1676 * NOQ : <same as NORM> 1677 * 1678 * there are three sources for i/o requests: 1679 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1680 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1681 * [3] open/ioctl: these are I/O requests done in the context of a process, 1682 * and the process should block until they are done. 1683 * 1684 * software state is stored in the iorq structure. each iorq has an 1685 * iopb structure. the hardware understands the iopb structure. 1686 * every command must go through an iopb. a 7053 can only handle 1687 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1688 * DVMA space at boot up time. what happens if we run out of iopb's? 1689 * for i/o type [1], the buffers are queued at the "buff" layer and 1690 * picked up later by the interrupt routine. for case [2] the 1691 * programmed i/o driver is called with a special flag that says 1692 * return when one iopb is free. for case [3] the process can sleep 1693 * on the iorq free list until some iopbs are available. 1694 */ 1695 1696 1697 int 1698 xdc_submit_iorq(xdcsc, iorqno, type) 1699 struct xdc_softc *xdcsc; 1700 int iorqno; 1701 int type; 1702 1703 { 1704 u_long iopbaddr; 1705 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1706 1707 #ifdef XDC_DEBUG 1708 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1709 iorqno, type); 1710 #endif 1711 1712 /* first check and see if controller is busy */ 1713 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1714 #ifdef XDC_DEBUG 1715 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1716 #endif 1717 if (type == XD_SUB_NOQ) 1718 return (XD_ERR_FAIL); /* failed */ 1719 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1720 switch (type) { 1721 case XD_SUB_NORM: 1722 return XD_ERR_AOK; /* success */ 1723 case XD_SUB_WAIT: 1724 while (iorq->iopb->done == 0) { 1725 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1726 } 1727 return (iorq->errno); 1728 case XD_SUB_POLL: 1729 return (xdc_piodriver(xdcsc, iorqno, 0)); 1730 default: 1731 panic("xdc_submit_iorq adding"); 1732 } 1733 } 1734 #ifdef XDC_DEBUG 1735 { 1736 u_char *rio = (u_char *) iorq->iopb; 1737 int sz = sizeof(struct xd_iopb), lcv; 1738 printf("%s: aio #%d [", 1739 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1740 for (lcv = 0; lcv < sz; lcv++) 1741 printf(" %02x", rio[lcv]); 1742 printf("]\n"); 1743 } 1744 #endif /* XDC_DEBUG */ 1745 1746 /* controller not busy, start command */ 1747 iopbaddr = (u_long) iorq->dmaiopb; 1748 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1749 xdcsc->nrun++; 1750 /* command now running, wrap it up */ 1751 switch (type) { 1752 case XD_SUB_NORM: 1753 case XD_SUB_NOQ: 1754 return (XD_ERR_AOK); /* success */ 1755 case XD_SUB_WAIT: 1756 while (iorq->iopb->done == 0) { 1757 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1758 } 1759 return (iorq->errno); 1760 case XD_SUB_POLL: 1761 return (xdc_piodriver(xdcsc, iorqno, 0)); 1762 default: 1763 panic("xdc_submit_iorq wrap up"); 1764 } 1765 panic("xdc_submit_iorq"); 1766 return 0; /* not reached */ 1767 } 1768 1769 1770 /* 1771 * xdc_piodriver 1772 * 1773 * programmed i/o driver. this function takes over the computer 1774 * and drains off all i/o requests. it returns the status of the iorq 1775 * the caller is interesting in. if freeone is true, then it returns 1776 * when there is a free iorq. 1777 */ 1778 int 1779 xdc_piodriver(xdcsc, iorqno, freeone) 1780 struct xdc_softc *xdcsc; 1781 int iorqno; 1782 int freeone; 1783 1784 { 1785 int nreset = 0; 1786 int retval = 0; 1787 u_long count; 1788 struct xdc *xdc = xdcsc->xdc; 1789 #ifdef XDC_DEBUG 1790 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1791 iorqno, freeone); 1792 #endif 1793 1794 while (xdcsc->nwait || xdcsc->nrun) { 1795 #ifdef XDC_DEBUG 1796 printf("xdc_piodriver: wait=%d, run=%d\n", 1797 xdcsc->nwait, xdcsc->nrun); 1798 #endif 1799 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1800 #ifdef XDC_DEBUG 1801 printf("xdc_piodriver: done wait with count = %d\n", count); 1802 #endif 1803 /* we expect some progress soon */ 1804 if (count == 0 && nreset >= 2) { 1805 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1806 #ifdef XDC_DEBUG 1807 printf("xdc_piodriver: timeout\n"); 1808 #endif 1809 return (XD_ERR_FAIL); 1810 } 1811 if (count == 0) { 1812 if (xdc_reset(xdcsc, 0, 1813 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1814 XD_ERR_FAIL, 1815 0) == XD_ERR_FAIL) 1816 return (XD_ERR_FAIL); /* flushes all but POLL 1817 * requests, resets */ 1818 continue; 1819 } 1820 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1821 if (freeone) { 1822 if (xdcsc->nrun < XDC_MAXIOPB) { 1823 #ifdef XDC_DEBUG 1824 printf("xdc_piodriver: done: one free\n"); 1825 #endif 1826 return (XD_ERR_AOK); 1827 } 1828 continue; /* don't xdc_start */ 1829 } 1830 xdc_start(xdcsc, XDC_MAXIOPB); 1831 } 1832 1833 /* get return value */ 1834 1835 retval = xdcsc->reqs[iorqno].errno; 1836 1837 #ifdef XDC_DEBUG 1838 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1839 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1840 #endif 1841 1842 /* now that we've drained everything, start up any bufs that have 1843 * queued */ 1844 1845 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1846 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1847 break; 1848 1849 return (retval); 1850 } 1851 1852 /* 1853 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1854 * we steal iopb[0] for this, but we put it back when we are done. 1855 */ 1856 void 1857 xdc_xdreset(xdcsc, xdsc) 1858 struct xdc_softc *xdcsc; 1859 struct xd_softc *xdsc; 1860 1861 { 1862 struct xd_iopb tmpiopb; 1863 u_long addr; 1864 int del; 1865 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1866 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1867 xdcsc->iopbase->comm = XDCMD_RST; 1868 xdcsc->iopbase->unit = xdsc->xd_drive; 1869 addr = (u_long) xdcsc->dvmaiopb; 1870 XDC_GO(xdcsc->xdc, addr); /* go! */ 1871 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1872 if (del <= 0 || xdcsc->iopbase->errs) { 1873 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1874 xdc_e2str(xdcsc->iopbase->errno)); 1875 xdcsc->xdc->xdc_csr = XDC_RESET; 1876 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1877 if (del <= 0) 1878 panic("xdc_reset"); 1879 } else { 1880 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1881 } 1882 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1883 } 1884 1885 1886 /* 1887 * xdc_reset: reset everything: requests are marked as errors except 1888 * a polled request (which is resubmitted) 1889 */ 1890 int 1891 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1892 struct xdc_softc *xdcsc; 1893 int quiet, blastmode, error; 1894 struct xd_softc *xdsc; 1895 1896 { 1897 int del = 0, lcv, retval = XD_ERR_AOK; 1898 int oldfree = xdcsc->nfree; 1899 1900 /* soft reset hardware */ 1901 1902 if (!quiet) 1903 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1904 xdcsc->xdc->xdc_csr = XDC_RESET; 1905 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1906 if (del <= 0) { 1907 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1908 retval = XD_ERR_FAIL; 1909 } 1910 if (xdsc) 1911 xdc_xdreset(xdcsc, xdsc); 1912 1913 /* fix queues based on "blast-mode" */ 1914 1915 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1916 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1917 1918 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1919 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1920 XD_STATE(iorq->mode) != XD_SUB_NORM) 1921 /* is it active? */ 1922 continue; 1923 1924 xdcsc->nrun--; /* it isn't running any more */ 1925 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1926 /* failed */ 1927 iorq->errno = error; 1928 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1929 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1930 case XD_SUB_NORM: 1931 iorq->buf->b_error = EIO; 1932 iorq->buf->b_flags |= B_ERROR; 1933 iorq->buf->b_resid = 1934 iorq->sectcnt * XDFM_BPS; 1935 1936 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1937 iorq->dmamap->dm_mapsize, 1938 (iorq->buf->b_flags & B_READ) 1939 ? BUS_DMASYNC_POSTREAD 1940 : BUS_DMASYNC_POSTWRITE); 1941 1942 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1943 1944 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1945 (xdcsc->reqs[lcv].buf->b_bcount - 1946 xdcsc->reqs[lcv].buf->b_resid), 1947 (iorq->buf->b_flags & B_READ)); 1948 biodone(iorq->buf); 1949 XDC_FREE(xdcsc, lcv); /* add to free list */ 1950 break; 1951 case XD_SUB_WAIT: 1952 wakeup(iorq); 1953 case XD_SUB_POLL: 1954 xdcsc->ndone++; 1955 iorq->mode = 1956 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1957 break; 1958 } 1959 1960 } else { 1961 1962 /* resubmit, put at front of wait queue */ 1963 XDC_HWAIT(xdcsc, lcv); 1964 } 1965 } 1966 1967 /* 1968 * now, if stuff is waiting, start it. 1969 * since we just reset it should go 1970 */ 1971 xdc_start(xdcsc, XDC_MAXIOPB); 1972 1973 /* ok, we did it */ 1974 if (oldfree == 0 && xdcsc->nfree) 1975 wakeup(&xdcsc->nfree); 1976 1977 #ifdef XDC_DIAG 1978 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1979 if (del != XDC_MAXIOPB) 1980 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1981 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1982 else 1983 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1984 printf("%s: diag: lots of done jobs (%d)\n", 1985 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1986 #endif 1987 printf("RESET DONE\n"); 1988 return (retval); 1989 } 1990 /* 1991 * xdc_start: start all waiting buffers 1992 */ 1993 1994 void 1995 xdc_start(xdcsc, maxio) 1996 struct xdc_softc *xdcsc; 1997 int maxio; 1998 1999 { 2000 int rqno; 2001 while (maxio && xdcsc->nwait && 2002 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 2003 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 2004 * param */ 2005 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 2006 panic("xdc_start"); /* should never happen */ 2007 maxio--; 2008 } 2009 } 2010 /* 2011 * xdc_remove_iorq: remove "done" IOPB's. 2012 */ 2013 2014 int 2015 xdc_remove_iorq(xdcsc) 2016 struct xdc_softc *xdcsc; 2017 2018 { 2019 int errno, rqno, comm, errs; 2020 struct xdc *xdc = xdcsc->xdc; 2021 struct xd_iopb *iopb; 2022 struct xd_iorq *iorq; 2023 struct buf *bp; 2024 2025 if (xdc->xdc_csr & XDC_F_ERROR) { 2026 /* 2027 * FATAL ERROR: should never happen under normal use. This 2028 * error is so bad, you can't even tell which IOPB is bad, so 2029 * we dump them all. 2030 */ 2031 errno = xdc->xdc_f_err; 2032 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2033 errno, xdc_e2str(errno)); 2034 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 2035 printf("%s: soft reset failed!\n", 2036 xdcsc->sc_dev.dv_xname); 2037 panic("xdc_remove_iorq: controller DEAD"); 2038 } 2039 return (XD_ERR_AOK); 2040 } 2041 2042 /* 2043 * get iopb that is done 2044 * 2045 * hmm... I used to read the address of the done IOPB off the VME 2046 * registers and calculate the rqno directly from that. that worked 2047 * until I started putting a load on the controller. when loaded, i 2048 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2049 * be set, even after DELAY'ing a while! later on the timeout 2050 * routine would detect IOPBs that were marked "running" but their 2051 * "done" bit was set. rather than dealing directly with this 2052 * problem, it is just easier to look at all running IOPB's for the 2053 * done bit. 2054 */ 2055 if (xdc->xdc_csr & XDC_REMIOPB) { 2056 xdc->xdc_csr = XDC_CLRRIO; 2057 } 2058 2059 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2060 iorq = &xdcsc->reqs[rqno]; 2061 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2062 continue; /* free, or done */ 2063 iopb = &xdcsc->iopbase[rqno]; 2064 if (iopb->done == 0) 2065 continue; /* not done yet */ 2066 2067 #ifdef XDC_DEBUG 2068 { 2069 u_char *rio = (u_char *) iopb; 2070 int sz = sizeof(struct xd_iopb), lcv; 2071 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2072 for (lcv = 0; lcv < sz; lcv++) 2073 printf(" %02x", rio[lcv]); 2074 printf("]\n"); 2075 } 2076 #endif /* XDC_DEBUG */ 2077 2078 xdcsc->nrun--; 2079 2080 comm = iopb->comm; 2081 errs = iopb->errs; 2082 2083 if (errs) 2084 iorq->errno = iopb->errno; 2085 else 2086 iorq->errno = 0; 2087 2088 /* handle non-fatal errors */ 2089 2090 if (errs && 2091 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2092 continue; /* AOK: we resubmitted it */ 2093 2094 2095 /* this iorq is now done (hasn't been restarted or anything) */ 2096 2097 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2098 xdc_perror(iorq, iopb, 0); 2099 2100 /* now, if read/write check to make sure we got all the data 2101 * we needed. (this may not be the case if we got an error in 2102 * the middle of a multisector request). */ 2103 2104 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2105 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2106 /* we just successfully processed a bad144 sector 2107 * note: if we are in bad 144 mode, the pointers have 2108 * been advanced already (see above) and are pointing 2109 * at the bad144 sector. to exit bad144 mode, we 2110 * must advance the pointers 1 sector and issue a new 2111 * request if there are still sectors left to process 2112 * 2113 */ 2114 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2115 2116 /* exit b144 mode */ 2117 iorq->mode = iorq->mode & (~XD_MODE_B144); 2118 2119 if (iorq->sectcnt) { /* more to go! */ 2120 iorq->lasterror = iorq->errno = iopb->errno = 0; 2121 iopb->errs = iopb->done = 0; 2122 iorq->tries = 0; 2123 iopb->sectcnt = iorq->sectcnt; 2124 iopb->cylno = iorq->blockno / 2125 iorq->xd->sectpercyl; 2126 iopb->headno = 2127 (iorq->blockno / iorq->xd->nhead) % 2128 iorq->xd->nhead; 2129 iopb->sectno = iorq->blockno % XDFM_BPS; 2130 iopb->daddr = (u_long) iorq->dbuf; 2131 XDC_HWAIT(xdcsc, rqno); 2132 xdc_start(xdcsc, 1); /* resubmit */ 2133 continue; 2134 } 2135 } 2136 /* final cleanup, totally done with this request */ 2137 2138 switch (XD_STATE(iorq->mode)) { 2139 case XD_SUB_NORM: 2140 bp = iorq->buf; 2141 if (errs) { 2142 bp->b_error = EIO; 2143 bp->b_flags |= B_ERROR; 2144 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2145 } else { 2146 bp->b_resid = 0; /* done */ 2147 } 2148 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2149 iorq->dmamap->dm_mapsize, 2150 (bp->b_flags & B_READ) 2151 ? BUS_DMASYNC_POSTREAD 2152 : BUS_DMASYNC_POSTWRITE); 2153 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2154 2155 disk_unbusy(&iorq->xd->sc_dk, 2156 (bp->b_bcount - bp->b_resid), 2157 (bp->b_flags & B_READ)); 2158 XDC_FREE(xdcsc, rqno); 2159 biodone(bp); 2160 break; 2161 case XD_SUB_WAIT: 2162 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2163 xdcsc->ndone++; 2164 wakeup(iorq); 2165 break; 2166 case XD_SUB_POLL: 2167 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2168 xdcsc->ndone++; 2169 break; 2170 } 2171 } 2172 2173 return (XD_ERR_AOK); 2174 } 2175 2176 /* 2177 * xdc_perror: print error. 2178 * - if still_trying is true: we got an error, retried and got a 2179 * different error. in that case lasterror is the old error, 2180 * and errno is the new one. 2181 * - if still_trying is not true, then if we ever had an error it 2182 * is in lasterror. also, if iorq->errno == 0, then we recovered 2183 * from that error (otherwise iorq->errno == iorq->lasterror). 2184 */ 2185 void 2186 xdc_perror(iorq, iopb, still_trying) 2187 struct xd_iorq *iorq; 2188 struct xd_iopb *iopb; 2189 int still_trying; 2190 2191 { 2192 2193 int error = iorq->lasterror; 2194 2195 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2196 : iorq->xdc->sc_dev.dv_xname); 2197 if (iorq->buf) 2198 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2199 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2200 printf("%s %d/%d/%d: ", 2201 (iopb->comm == XDCMD_RD) ? "read" : "write", 2202 iopb->cylno, iopb->headno, iopb->sectno); 2203 printf("%s", xdc_e2str(error)); 2204 2205 if (still_trying) 2206 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2207 else 2208 if (iorq->errno == 0) 2209 printf(" [recovered in %d tries]", iorq->tries); 2210 2211 printf("\n"); 2212 } 2213 2214 /* 2215 * xdc_error: non-fatal error encountered... recover. 2216 * return AOK if resubmitted, return FAIL if this iopb is done 2217 */ 2218 int 2219 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2220 struct xdc_softc *xdcsc; 2221 struct xd_iorq *iorq; 2222 struct xd_iopb *iopb; 2223 int rqno, comm; 2224 2225 { 2226 int errno = iorq->errno; 2227 int erract = errno & XD_ERA_MASK; 2228 int oldmode, advance; 2229 #ifdef __sparc__ 2230 int i; 2231 #endif 2232 2233 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2234 oldmode = iorq->mode; 2235 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2236 xdcsc->ndone++; 2237 /* make xdc_start ignore us */ 2238 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2239 iorq->mode = oldmode; 2240 xdcsc->ndone--; 2241 } 2242 /* check for read/write to a sector in bad144 table if bad: redirect 2243 * request to bad144 area */ 2244 2245 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2246 (iorq->mode & XD_MODE_B144) == 0) { 2247 advance = iorq->sectcnt - iopb->sectcnt; 2248 XDC_ADVANCE(iorq, advance); 2249 #ifdef __sparc__ 2250 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2251 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2252 iorq->blockno % iorq->xd->nsect)) != -1) { 2253 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2254 * redirect */ 2255 iopb->errno = iopb->done = iopb->errs = 0; 2256 iopb->sectcnt = 1; 2257 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2258 /* second to last acyl */ 2259 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2260 * standard */ 2261 iopb->headno = i / iorq->xd->nhead; 2262 iopb->sectno = i % iorq->xd->nhead; 2263 XDC_HWAIT(xdcsc, rqno); 2264 xdc_start(xdcsc, 1); /* resubmit */ 2265 return (XD_ERR_AOK); /* recovered! */ 2266 } 2267 #endif 2268 } 2269 2270 /* 2271 * it isn't a bad144 sector, must be real error! see if we can retry 2272 * it? 2273 */ 2274 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2275 xdc_perror(iorq, iopb, 1); /* inform of error state 2276 * change */ 2277 iorq->lasterror = errno; 2278 2279 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2280 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2281 iorq->tries++; 2282 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2283 XDC_HWAIT(xdcsc, rqno); 2284 xdc_start(xdcsc, 1); /* restart */ 2285 return (XD_ERR_AOK); /* recovered! */ 2286 } 2287 2288 /* failed to recover from this error */ 2289 return (XD_ERR_FAIL); 2290 } 2291 2292 /* 2293 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2294 */ 2295 void 2296 xdc_tick(arg) 2297 void *arg; 2298 2299 { 2300 struct xdc_softc *xdcsc = arg; 2301 int lcv, s, reset = 0; 2302 #ifdef XDC_DIAG 2303 int nwait, nrun, nfree, ndone, whd = 0; 2304 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2305 s = splbio(); 2306 nwait = xdcsc->nwait; 2307 nrun = xdcsc->nrun; 2308 nfree = xdcsc->nfree; 2309 ndone = xdcsc->ndone; 2310 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2311 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2312 splx(s); 2313 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2314 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2315 xdcsc->sc_dev.dv_xname, nwait, nfree, nrun, ndone, 2316 XDC_MAXIOPB); 2317 bzero(mark, sizeof(mark)); 2318 printf("FREE: "); 2319 for (lcv = nfree; lcv > 0; lcv--) { 2320 printf("%d ", fqc[lcv - 1]); 2321 mark[fqc[lcv - 1]] = 1; 2322 } 2323 printf("\nWAIT: "); 2324 lcv = nwait; 2325 while (lcv > 0) { 2326 printf("%d ", wqc[whd]); 2327 mark[wqc[whd]] = 1; 2328 whd = (whd + 1) % XDC_MAXIOPB; 2329 lcv--; 2330 } 2331 printf("\n"); 2332 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2333 if (mark[lcv] == 0) 2334 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2335 lcv, xdcsc->reqs[lcv].mode, 2336 xdcsc->iopbase[lcv].done, 2337 xdcsc->iopbase[lcv].errs, 2338 xdcsc->iopbase[lcv].errno, 2339 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2340 } 2341 } else 2342 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2343 printf("%s: diag: lots of done jobs (%d)\n", 2344 xdcsc->sc_dev.dv_xname, ndone); 2345 2346 #endif 2347 #ifdef XDC_DEBUG 2348 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2349 xdcsc->sc_dev.dv_xname, 2350 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2351 xdcsc->ndone); 2352 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2353 if (xdcsc->reqs[lcv].mode) 2354 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2355 lcv, 2356 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2357 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2358 } 2359 #endif 2360 2361 /* reduce ttl for each request if one goes to zero, reset xdc */ 2362 s = splbio(); 2363 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2364 if (xdcsc->reqs[lcv].mode == 0 || 2365 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2366 continue; 2367 xdcsc->reqs[lcv].ttl--; 2368 if (xdcsc->reqs[lcv].ttl == 0) 2369 reset = 1; 2370 } 2371 if (reset) { 2372 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2373 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2374 } 2375 splx(s); 2376 2377 /* until next time */ 2378 2379 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2380 } 2381 2382 /* 2383 * xdc_ioctlcmd: this function provides a user level interface to the 2384 * controller via ioctl. this allows "format" programs to be written 2385 * in user code, and is also useful for some debugging. we return 2386 * an error code. called at user priority. 2387 */ 2388 int 2389 xdc_ioctlcmd(xd, dev, xio) 2390 struct xd_softc *xd; 2391 dev_t dev; 2392 struct xd_iocmd *xio; 2393 2394 { 2395 int s, rqno, dummy; 2396 caddr_t dvmabuf = NULL, buf = NULL; 2397 struct xdc_softc *xdcsc; 2398 int rseg, error; 2399 bus_dma_segment_t seg; 2400 2401 /* check sanity of requested command */ 2402 2403 switch (xio->cmd) { 2404 2405 case XDCMD_NOP: /* no op: everything should be zero */ 2406 if (xio->subfn || xio->dptr || xio->dlen || 2407 xio->block || xio->sectcnt) 2408 return (EINVAL); 2409 break; 2410 2411 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2412 case XDCMD_WR: 2413 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2414 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2415 return (EINVAL); 2416 break; 2417 2418 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2419 return (EINVAL); 2420 2421 case XDCMD_WRP: /* write parameters */ 2422 return (EINVAL);/* not useful, except maybe drive 2423 * parameters... but drive parameters should 2424 * go via disklabel changes */ 2425 2426 case XDCMD_RDP: /* read parameters */ 2427 if (xio->subfn != XDFUN_DRV || 2428 xio->dlen || xio->block || xio->dptr) 2429 return (EINVAL); /* allow read drive params to 2430 * get hw_spt */ 2431 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2432 return (0); 2433 break; 2434 2435 case XDCMD_XRD: /* extended read/write */ 2436 case XDCMD_XWR: 2437 2438 switch (xio->subfn) { 2439 2440 case XDFUN_THD:/* track headers */ 2441 if (xio->sectcnt != xd->hw_spt || 2442 (xio->block % xd->nsect) != 0 || 2443 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2444 xio->dptr == NULL) 2445 return (EINVAL); 2446 xio->sectcnt = 0; 2447 break; 2448 2449 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2450 if (xio->cmd == XDCMD_XRD) 2451 return (EINVAL); /* no XDFUN_VFY */ 2452 if (xio->sectcnt || xio->dlen || 2453 (xio->block % xd->nsect) != 0 || xio->dptr) 2454 return (EINVAL); 2455 break; 2456 2457 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2458 return (EINVAL); /* not yet */ 2459 2460 case XDFUN_DM: /* defect map */ 2461 case XDFUN_DMX:/* defect map (alternate location) */ 2462 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2463 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2464 return (EINVAL); 2465 break; 2466 2467 default: 2468 return (EINVAL); 2469 } 2470 break; 2471 2472 case XDCMD_TST: /* diagnostics */ 2473 return (EINVAL); 2474 2475 default: 2476 return (EINVAL);/* ??? */ 2477 } 2478 2479 xdcsc = xd->parent; 2480 2481 /* create DVMA buffer for request if needed */ 2482 if (xio->dlen) { 2483 bus_addr_t busbuf; 2484 2485 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2486 &seg, &rseg, 2487 xio->dlen, &buf, 2488 &busbuf)) != 0) { 2489 return (error); 2490 } 2491 dvmabuf = (caddr_t)(u_long)BUS_ADDR_PADDR(busbuf); 2492 2493 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2494 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2495 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2496 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2497 return (error); 2498 } 2499 } 2500 } 2501 2502 /* do it! */ 2503 2504 error = 0; 2505 s = splbio(); 2506 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2507 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2508 if (rqno == XD_ERR_FAIL) { 2509 error = EIO; 2510 goto done; 2511 } 2512 xio->errno = xdcsc->reqs[rqno].errno; 2513 xio->tries = xdcsc->reqs[rqno].tries; 2514 XDC_DONE(xdcsc, rqno, dummy); 2515 2516 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2517 error = copyout(buf, xio->dptr, xio->dlen); 2518 2519 done: 2520 splx(s); 2521 if (dvmabuf) { 2522 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2523 xio->dlen, buf); 2524 } 2525 return (error); 2526 } 2527 2528 /* 2529 * xdc_e2str: convert error code number into an error string 2530 */ 2531 const char * 2532 xdc_e2str(no) 2533 int no; 2534 { 2535 switch (no) { 2536 case XD_ERR_FAIL: 2537 return ("Software fatal error"); 2538 case XD_ERR_AOK: 2539 return ("Successful completion"); 2540 case XD_ERR_ICYL: 2541 return ("Illegal cylinder address"); 2542 case XD_ERR_IHD: 2543 return ("Illegal head address"); 2544 case XD_ERR_ISEC: 2545 return ("Illgal sector address"); 2546 case XD_ERR_CZER: 2547 return ("Count zero"); 2548 case XD_ERR_UIMP: 2549 return ("Unimplemented command"); 2550 case XD_ERR_IF1: 2551 return ("Illegal field length 1"); 2552 case XD_ERR_IF2: 2553 return ("Illegal field length 2"); 2554 case XD_ERR_IF3: 2555 return ("Illegal field length 3"); 2556 case XD_ERR_IF4: 2557 return ("Illegal field length 4"); 2558 case XD_ERR_IF5: 2559 return ("Illegal field length 5"); 2560 case XD_ERR_IF6: 2561 return ("Illegal field length 6"); 2562 case XD_ERR_IF7: 2563 return ("Illegal field length 7"); 2564 case XD_ERR_ISG: 2565 return ("Illegal scatter/gather length"); 2566 case XD_ERR_ISPT: 2567 return ("Not enough sectors per track"); 2568 case XD_ERR_ALGN: 2569 return ("Next IOPB address alignment error"); 2570 case XD_ERR_SGAL: 2571 return ("Scatter/gather address alignment error"); 2572 case XD_ERR_SGEC: 2573 return ("Scatter/gather with auto-ECC"); 2574 case XD_ERR_SECC: 2575 return ("Soft ECC corrected"); 2576 case XD_ERR_SIGN: 2577 return ("ECC ignored"); 2578 case XD_ERR_ASEK: 2579 return ("Auto-seek retry recovered"); 2580 case XD_ERR_RTRY: 2581 return ("Soft retry recovered"); 2582 case XD_ERR_HECC: 2583 return ("Hard data ECC"); 2584 case XD_ERR_NHDR: 2585 return ("Header not found"); 2586 case XD_ERR_NRDY: 2587 return ("Drive not ready"); 2588 case XD_ERR_TOUT: 2589 return ("Operation timeout"); 2590 case XD_ERR_VTIM: 2591 return ("VMEDMA timeout"); 2592 case XD_ERR_DSEQ: 2593 return ("Disk sequencer error"); 2594 case XD_ERR_HDEC: 2595 return ("Header ECC error"); 2596 case XD_ERR_RVFY: 2597 return ("Read verify"); 2598 case XD_ERR_VFER: 2599 return ("Fatail VMEDMA error"); 2600 case XD_ERR_VBUS: 2601 return ("VMEbus error"); 2602 case XD_ERR_DFLT: 2603 return ("Drive faulted"); 2604 case XD_ERR_HECY: 2605 return ("Header error/cyliner"); 2606 case XD_ERR_HEHD: 2607 return ("Header error/head"); 2608 case XD_ERR_NOCY: 2609 return ("Drive not on-cylinder"); 2610 case XD_ERR_SEEK: 2611 return ("Seek error"); 2612 case XD_ERR_ILSS: 2613 return ("Illegal sector size"); 2614 case XD_ERR_SEC: 2615 return ("Soft ECC"); 2616 case XD_ERR_WPER: 2617 return ("Write-protect error"); 2618 case XD_ERR_IRAM: 2619 return ("IRAM self test failure"); 2620 case XD_ERR_MT3: 2621 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2622 case XD_ERR_MT4: 2623 return ("Maintenance test 4 failure (header shift reg)"); 2624 case XD_ERR_MT5: 2625 return ("Maintenance test 5 failure (VMEDMA regs)"); 2626 case XD_ERR_MT6: 2627 return ("Maintenance test 6 failure (REGCEL chip)"); 2628 case XD_ERR_MT7: 2629 return ("Maintenance test 7 failure (buffer parity)"); 2630 case XD_ERR_MT8: 2631 return ("Maintenance test 8 failure (disk FIFO)"); 2632 case XD_ERR_IOCK: 2633 return ("IOPB checksum miscompare"); 2634 case XD_ERR_IODM: 2635 return ("IOPB DMA fatal"); 2636 case XD_ERR_IOAL: 2637 return ("IOPB address alignment error"); 2638 case XD_ERR_FIRM: 2639 return ("Firmware error"); 2640 case XD_ERR_MMOD: 2641 return ("Illegal maintenance mode test number"); 2642 case XD_ERR_ACFL: 2643 return ("ACFAIL asserted"); 2644 default: 2645 return ("Unknown error"); 2646 } 2647 } 2648