Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ieee1394/fwmem.c
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1 /* $NetBSD: fwmem.c,v 1.8 2007/12/11 11:34:08 lukem Exp $ */ 2 /*- 3 * Copyright (c) 2002-2003 4 * Hidetoshi Shimokawa. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * 17 * This product includes software developed by Hidetoshi Shimokawa. 18 * 19 * 4. Neither the name of the author nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: fwmem.c,v 1.8 2007/12/11 11:34:08 lukem Exp $"); 39 #if defined(__FreeBSD__) 40 __FBSDID("$FreeBSD: src/sys/dev/firewire/fwmem.c,v 1.34 2007/06/06 14:31:36 simokawa Exp $"); 41 #endif 42 43 #if defined(__FreeBSD__) 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/types.h> 47 48 #include <sys/kernel.h> 49 #include <sys/malloc.h> 50 #include <sys/conf.h> 51 #include <sys/sysctl.h> 52 #if defined(__DragonFly__) || __FreeBSD_version < 500000 53 #include <sys/buf.h> 54 #else 55 #include <sys/bio.h> 56 #endif 57 58 #include <sys/bus.h> 59 #include <sys/bus.h> 60 61 #include <sys/signal.h> 62 #include <sys/mman.h> 63 #include <sys/ioccom.h> 64 #include <sys/fcntl.h> 65 #include <sys/ktr.h> 66 67 #ifdef __DragonFly__ 68 #include "fw_port.h" 69 #include "firewire.h" 70 #include "firewirereg.h" 71 #include "fwmem.h" 72 #else 73 #include <dev/firewire/fw_port.h> 74 #include <dev/firewire/firewire.h> 75 #include <dev/firewire/firewirereg.h> 76 #include <dev/firewire/fwmem.h> 77 #endif 78 #elif defined(__NetBSD__) 79 #include <sys/param.h> 80 #include <sys/device.h> 81 #include <sys/errno.h> 82 #include <sys/buf.h> 83 #include <sys/conf.h> 84 #include <sys/fcntl.h> 85 #include <sys/malloc.h> 86 #include <sys/sysctl.h> 87 88 #include <sys/bus.h> 89 90 #include <dev/ieee1394/fw_port.h> 91 #include <dev/ieee1394/firewire.h> 92 #include <dev/ieee1394/firewirereg.h> 93 #include <dev/ieee1394/fwmem.h> 94 #endif 95 96 static int fwmem_speed=2, fwmem_debug=0; 97 static struct fw_eui64 fwmem_eui64; 98 #if defined(__FreeBSD__) 99 SYSCTL_DECL(_hw_firewire); 100 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0, 101 "FireWire Memory Access"); 102 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW, 103 &fwmem_eui64.hi, 0, "Fwmem target EUI64 high"); 104 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW, 105 &fwmem_eui64.lo, 0, "Fwmem target EUI64 low"); 106 SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0, 107 "Fwmem link speed"); 108 SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0, 109 "Fwmem driver debug flag"); 110 MALLOC_DEFINE(M_FWMEM, "fwmem", "fwmem/FireWire"); 111 #elif defined(__NetBSD__) 112 static int sysctl_fwmem_verify(SYSCTLFN_PROTO, int, int); 113 static int sysctl_fwmem_verify_speed(SYSCTLFN_PROTO); 114 115 /* 116 * Setup sysctl(3) MIB, hw.fwmem.* 117 * 118 * TBD condition CTLFLAG_PERMANENT on being an LKM or not 119 */ 120 SYSCTL_SETUP(sysctl_fwmem, "sysctl fwmem subtree setup") 121 { 122 int rc, fwmem_node_num; 123 const struct sysctlnode *node; 124 125 if ((rc = sysctl_createv(clog, 0, NULL, NULL, 126 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 127 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) { 128 goto err; 129 } 130 131 if ((rc = sysctl_createv(clog, 0, NULL, &node, 132 CTLFLAG_PERMANENT, CTLTYPE_NODE, "fwmem", 133 SYSCTL_DESCR("IEEE1394 Memory Access"), 134 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { 135 goto err; 136 } 137 fwmem_node_num = node->sysctl_num; 138 139 /* fwmem target EUI64 high/low */ 140 if ((rc = sysctl_createv(clog, 0, NULL, &node, 141 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 142 "eui64_hi", SYSCTL_DESCR("Fwmem target EUI64 high"), 143 NULL, 0, &fwmem_eui64.hi, 144 0, CTL_HW, fwmem_node_num, CTL_CREATE, CTL_EOL)) != 0) { 145 goto err; 146 } 147 if ((rc = sysctl_createv(clog, 0, NULL, &node, 148 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 149 "eui64_lo", SYSCTL_DESCR("Fwmem target EUI64 low"), 150 NULL, 0, &fwmem_eui64.lo, 151 0, CTL_HW, fwmem_node_num, CTL_CREATE, CTL_EOL)) != 0) { 152 goto err; 153 } 154 155 /* fwmem link speed */ 156 if ((rc = sysctl_createv(clog, 0, NULL, &node, 157 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 158 "speed", SYSCTL_DESCR("Fwmem link speed"), 159 sysctl_fwmem_verify_speed, 0, &fwmem_speed, 160 0, CTL_HW, fwmem_node_num, CTL_CREATE, CTL_EOL)) != 0) { 161 goto err; 162 } 163 164 /* fwmem driver debug flag */ 165 if ((rc = sysctl_createv(clog, 0, NULL, &node, 166 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 167 "fwmem_debug", SYSCTL_DESCR("Fwmem driver debug flag"), 168 NULL, 0, &fwmem_debug, 169 0, CTL_HW, fwmem_node_num, CTL_CREATE, CTL_EOL)) != 0) { 170 goto err; 171 } 172 173 return; 174 175 err: 176 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 177 } 178 179 static int 180 sysctl_fwmem_verify(SYSCTLFN_ARGS, int lower, int upper) 181 { 182 int error, t; 183 struct sysctlnode node; 184 185 node = *rnode; 186 t = *(int*)rnode->sysctl_data; 187 node.sysctl_data = &t; 188 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 189 if (error || newp == NULL) 190 return (error); 191 192 if (t < lower || t > upper) 193 return (EINVAL); 194 195 *(int*)rnode->sysctl_data = t; 196 197 return (0); 198 } 199 200 static int 201 sysctl_fwmem_verify_speed(SYSCTLFN_ARGS) 202 { 203 return (sysctl_fwmem_verify(SYSCTLFN_CALL(rnode), 0, FWSPD_S400)); 204 } 205 206 MALLOC_DEFINE(M_FWMEM, "fwmem", "fwmem/IEEE1394"); 207 #endif 208 209 #define MAXLEN (512 << fwmem_speed) 210 211 struct fwmem_softc { 212 struct fw_eui64 eui; 213 struct firewire_softc *sc; 214 int refcount; 215 STAILQ_HEAD(, fw_xfer) xferlist; 216 }; 217 218 static struct fw_xfer * 219 fwmem_xfer_req( 220 struct fw_device *fwdev, 221 void *sc, 222 int spd, 223 int slen, 224 int rlen, 225 void *hand) 226 { 227 struct fw_xfer *xfer; 228 229 xfer = fw_xfer_alloc(M_FWMEM); 230 if (xfer == NULL) 231 return NULL; 232 233 xfer->fc = fwdev->fc; 234 xfer->send.hdr.mode.hdr.dst = FWLOCALBUS | fwdev->dst; 235 if (spd < 0) 236 xfer->send.spd = fwdev->speed; 237 else 238 xfer->send.spd = min(spd, fwdev->speed); 239 xfer->hand = hand; 240 xfer->sc = sc; 241 xfer->send.pay_len = slen; 242 xfer->recv.pay_len = rlen; 243 244 return xfer; 245 } 246 247 struct fw_xfer * 248 fwmem_read_quad( 249 struct fw_device *fwdev, 250 void * sc, 251 uint8_t spd, 252 uint16_t dst_hi, 253 uint32_t dst_lo, 254 void *data, 255 void (*hand)(struct fw_xfer *)) 256 { 257 struct fw_xfer *xfer; 258 struct fw_pkt *fp; 259 260 xfer = fwmem_xfer_req(fwdev, (void *)sc, spd, 0, 4, hand); 261 if (xfer == NULL) { 262 return NULL; 263 } 264 265 fp = &xfer->send.hdr; 266 fp->mode.rreqq.tcode = FWTCODE_RREQQ; 267 fp->mode.rreqq.dest_hi = dst_hi; 268 fp->mode.rreqq.dest_lo = dst_lo; 269 270 xfer->send.payload = NULL; 271 xfer->recv.payload = (uint32_t *)data; 272 273 if (fwmem_debug) 274 printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst, 275 dst_hi, dst_lo); 276 277 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 278 return xfer; 279 280 fw_xfer_free(xfer); 281 return NULL; 282 } 283 284 struct fw_xfer * 285 fwmem_write_quad( 286 struct fw_device *fwdev, 287 void * sc, 288 uint8_t spd, 289 uint16_t dst_hi, 290 uint32_t dst_lo, 291 void *data, 292 void (*hand)(struct fw_xfer *)) 293 { 294 struct fw_xfer *xfer; 295 struct fw_pkt *fp; 296 297 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, 0, hand); 298 if (xfer == NULL) 299 return NULL; 300 301 fp = &xfer->send.hdr; 302 fp->mode.wreqq.tcode = FWTCODE_WREQQ; 303 fp->mode.wreqq.dest_hi = dst_hi; 304 fp->mode.wreqq.dest_lo = dst_lo; 305 fp->mode.wreqq.data = *(uint32_t *)data; 306 307 xfer->send.payload = xfer->recv.payload = NULL; 308 309 if (fwmem_debug) 310 printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst, 311 dst_hi, dst_lo, *(uint32_t *)data); 312 313 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 314 return xfer; 315 316 fw_xfer_free(xfer); 317 return NULL; 318 } 319 320 struct fw_xfer * 321 fwmem_read_block( 322 struct fw_device *fwdev, 323 void * sc, 324 uint8_t spd, 325 uint16_t dst_hi, 326 uint32_t dst_lo, 327 int len, 328 void *data, 329 void (*hand)(struct fw_xfer *)) 330 { 331 struct fw_xfer *xfer; 332 struct fw_pkt *fp; 333 334 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, roundup2(len, 4), hand); 335 if (xfer == NULL) 336 return NULL; 337 338 fp = &xfer->send.hdr; 339 fp->mode.rreqb.tcode = FWTCODE_RREQB; 340 fp->mode.rreqb.dest_hi = dst_hi; 341 fp->mode.rreqb.dest_lo = dst_lo; 342 fp->mode.rreqb.len = len; 343 fp->mode.rreqb.extcode = 0; 344 345 xfer->send.payload = NULL; 346 xfer->recv.payload = data; 347 348 if (fwmem_debug) 349 printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst, 350 dst_hi, dst_lo, len); 351 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 352 return xfer; 353 354 fw_xfer_free(xfer); 355 return NULL; 356 } 357 358 struct fw_xfer * 359 fwmem_write_block( 360 struct fw_device *fwdev, 361 void * sc, 362 uint8_t spd, 363 uint16_t dst_hi, 364 uint32_t dst_lo, 365 int len, 366 void *data, 367 void (*hand)(struct fw_xfer *)) 368 { 369 struct fw_xfer *xfer; 370 struct fw_pkt *fp; 371 372 xfer = fwmem_xfer_req(fwdev, sc, spd, len, 0, hand); 373 if (xfer == NULL) 374 return NULL; 375 376 fp = &xfer->send.hdr; 377 fp->mode.wreqb.tcode = FWTCODE_WREQB; 378 fp->mode.wreqb.dest_hi = dst_hi; 379 fp->mode.wreqb.dest_lo = dst_lo; 380 fp->mode.wreqb.len = len; 381 fp->mode.wreqb.extcode = 0; 382 383 xfer->send.payload = data; 384 xfer->recv.payload = NULL; 385 386 if (fwmem_debug) 387 printf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst, 388 dst_hi, dst_lo, len); 389 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 390 return xfer; 391 392 fw_xfer_free(xfer); 393 return NULL; 394 } 395 396 397 FW_OPEN(fwmem) 398 { 399 struct fwmem_softc *fms; 400 struct fw_xfer *xfer; 401 FW_OPEN_START; 402 403 if (dev->si_drv1 != NULL) { 404 if ((flags & FWRITE) != 0) { 405 FW_GUNLOCK(sc->fc); 406 return (EBUSY); 407 } 408 FW_GUNLOCK(sc->fc); 409 fms = (struct fwmem_softc *)dev->si_drv1; 410 fms->refcount ++; 411 } else { 412 dev->si_drv1 = (void *)-1; 413 FW_GUNLOCK(sc->fc); 414 dev->si_drv1 = malloc(sizeof(struct fwmem_softc), 415 M_FWMEM, M_WAITOK); 416 if (dev->si_drv1 == NULL) 417 return ENOMEM; 418 dev->si_iosize_max = DFLTPHYS; 419 fms = (struct fwmem_softc *)dev->si_drv1; 420 bcopy(&fwmem_eui64, &fms->eui, sizeof(struct fw_eui64)); 421 fms->sc = sc; 422 fms->refcount = 1; 423 STAILQ_INIT(&fms->xferlist); 424 xfer = fw_xfer_alloc(M_FWMEM); 425 STAILQ_INSERT_TAIL(&fms->xferlist, xfer, link); 426 } 427 if (fwmem_debug) 428 printf("%s: refcount=%d\n", __func__, fms->refcount); 429 430 return (0); 431 } 432 433 FW_CLOSE(fwmem) 434 { 435 struct fwmem_softc *fms; 436 struct fw_xfer *xfer; 437 FW_CLOSE_START; 438 439 fms = (struct fwmem_softc *)dev->si_drv1; 440 441 FW_GLOCK(fms->sc->fc); 442 fms->refcount --; 443 FW_GUNLOCK(fms->sc->fc); 444 if (fwmem_debug) 445 printf("%s: refcount=%d\n", __func__, fms->refcount); 446 if (fms->refcount < 1) { 447 while ((xfer = STAILQ_FIRST(&fms->xferlist)) != NULL) { 448 STAILQ_REMOVE_HEAD(&fms->xferlist, link); 449 fw_xfer_free(xfer); 450 } 451 free(dev->si_drv1, M_FW); 452 dev->si_drv1 = NULL; 453 } 454 455 return (0); 456 } 457 458 459 static void 460 fwmem_biodone(struct fw_xfer *xfer) 461 { 462 struct bio *bp; 463 464 bp = (struct bio *)xfer->sc; 465 bp->bio_error = xfer->resp; 466 467 if (bp->bio_error != 0) { 468 if (fwmem_debug) 469 printf("%s: err=%d\n", __func__, bp->bio_error); 470 bp->bio_resid = bp->bio_bcount; 471 } 472 473 CTR0(KTR_DEV, "biodone0"); 474 fw_xfer_free(xfer); 475 CTR0(KTR_DEV, "biodone1"); 476 biodone(bp); 477 CTR0(KTR_DEV, "biodone2"); 478 } 479 480 void 481 fwmem_strategy(struct bio *bp) 482 { 483 FW_STRATEGY_START; 484 struct fwmem_softc *fms; 485 struct fw_device *fwdev; 486 struct fw_xfer *xfer; 487 int err = 0, s, iolen; 488 489 CTR0(KTR_DEV, "strategy"); 490 491 /* XXX check request length */ 492 493 s = splfw(); 494 fms = (struct fwmem_softc *)dev->si_drv1; 495 fwdev = fw_noderesolve_eui64(fms->sc->fc, &fms->eui); 496 if (fwdev == NULL) { 497 if (fwmem_debug) 498 printf("fwmem: no such device ID:%08x%08x\n", 499 fms->eui.hi, fms->eui.lo); 500 err = EINVAL; 501 goto error; 502 } 503 504 iolen = MIN(bp->bio_bcount, MAXLEN); 505 if ((bp->bio_cmd & BIO_READ) == BIO_READ) { 506 if (iolen == 4 && (bp->bio_offset & 3) == 0) 507 xfer = fwmem_read_quad(fwdev, 508 (void *) bp, fwmem_speed, 509 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 510 bp->bio_data, fwmem_biodone); 511 else 512 xfer = fwmem_read_block(fwdev, 513 (void *) bp, fwmem_speed, 514 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 515 iolen, bp->bio_data, fwmem_biodone); 516 } else { 517 if (iolen == 4 && (bp->bio_offset & 3) == 0) 518 xfer = fwmem_write_quad(fwdev, 519 (void *)bp, fwmem_speed, 520 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 521 bp->bio_data, fwmem_biodone); 522 else 523 xfer = fwmem_write_block(fwdev, 524 (void *)bp, fwmem_speed, 525 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 526 iolen, bp->bio_data, fwmem_biodone); 527 } 528 if (xfer == NULL) { 529 err = EIO; 530 goto error; 531 } 532 /* XXX */ 533 bp->bio_resid = bp->bio_bcount - iolen; 534 error: 535 splx(s); 536 if (err != 0) { 537 if (fwmem_debug) 538 printf("%s: err=%d\n", __func__, err); 539 bp->bio_error = err; 540 bp->bio_resid = bp->bio_bcount; 541 biodone(bp); 542 } 543 } 544 545 FW_IOCTL(fwmem) 546 { 547 FW_IOCTL_START; 548 struct fwmem_softc *fms; 549 int err = 0; 550 551 fms = (struct fwmem_softc *)dev->si_drv1; 552 switch (cmd) { 553 case FW_SDEUI64: 554 bcopy(data, &fms->eui, sizeof(struct fw_eui64)); 555 break; 556 case FW_GDEUI64: 557 bcopy(&fms->eui, data, sizeof(struct fw_eui64)); 558 break; 559 default: 560 err = EINVAL; 561 } 562 return(err); 563 } 564 565 FW_POLL(fwmem) 566 { 567 return EINVAL; 568 } 569 570 FW_MMAP(fwmem) 571 { 572 return EINVAL; 573 }
Cache object: b7f92710156a047dce3c9fd7b7e6fca6
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