1 /* 2 * Copyright (c) 2002-2003 3 * Hidetoshi Shimokawa. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * 16 * This product includes software developed by Hidetoshi Shimokawa. 17 * 18 * 4. Neither the name of the author nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/sys/bus/firewire/fwmem.c,v 1.5 2004/02/05 17:51:43 joerg Exp $ 35 */ 36 37 #ifndef __DragonFly__ 38 #include <sys/cdefs.h> 39 __FBSDID("$FreeBSD: src/sys/dev/firewire/fwmem.c,v 1.26 2004/01/05 14:21:18 simokawa Exp $"); 40 #endif 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/types.h> 45 46 #include <sys/kernel.h> 47 #include <sys/malloc.h> 48 #include <sys/conf.h> 49 #include <sys/sysctl.h> 50 #if defined(__DragonFly__) || __FreeBSD_version < 500000 51 #include <sys/buf.h> 52 #else 53 #include <sys/bio.h> 54 #endif 55 56 #include <sys/bus.h> 57 #include <machine/bus.h> 58 59 #include <sys/signal.h> 60 #include <sys/mman.h> 61 #include <sys/ioccom.h> 62 #include <sys/fcntl.h> 63 64 #ifdef __DragonFly__ 65 #include "firewire.h" 66 #include "firewirereg.h" 67 #include "fwmem.h" 68 #else 69 #include <dev/firewire/firewire.h> 70 #include <dev/firewire/firewirereg.h> 71 #include <dev/firewire/fwmem.h> 72 #endif 73 74 static int fwmem_speed=2, fwmem_debug=0; 75 static struct fw_eui64 fwmem_eui64; 76 SYSCTL_DECL(_hw_firewire); 77 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0, 78 "FireWire Memory Access"); 79 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW, 80 &fwmem_eui64.hi, 0, "Fwmem target EUI64 high"); 81 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW, 82 &fwmem_eui64.lo, 0, "Fwmem target EUI64 low"); 83 SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0, 84 "Fwmem link speed"); 85 SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0, 86 "Fwmem driver debug flag"); 87 88 MALLOC_DEFINE(M_FWMEM, "fwmem", "fwmem/FireWire"); 89 90 #define MAXLEN (512 << fwmem_speed) 91 92 struct fwmem_softc { 93 struct fw_eui64 eui; 94 int refcount; 95 }; 96 97 static struct fw_xfer * 98 fwmem_xfer_req( 99 struct fw_device *fwdev, 100 caddr_t sc, 101 int spd, 102 int slen, 103 int rlen, 104 void *hand) 105 { 106 struct fw_xfer *xfer; 107 108 xfer = fw_xfer_alloc(M_FWMEM); 109 if (xfer == NULL) 110 return NULL; 111 112 xfer->fc = fwdev->fc; 113 xfer->send.hdr.mode.hdr.dst = FWLOCALBUS | fwdev->dst; 114 if (spd < 0) 115 xfer->send.spd = fwdev->speed; 116 else 117 xfer->send.spd = min(spd, fwdev->speed); 118 xfer->act.hand = hand; 119 xfer->retry_req = fw_asybusy; 120 xfer->sc = sc; 121 xfer->send.pay_len = slen; 122 xfer->recv.pay_len = rlen; 123 124 return xfer; 125 } 126 127 struct fw_xfer * 128 fwmem_read_quad( 129 struct fw_device *fwdev, 130 caddr_t sc, 131 u_int8_t spd, 132 u_int16_t dst_hi, 133 u_int32_t dst_lo, 134 void *data, 135 void (*hand)(struct fw_xfer *)) 136 { 137 struct fw_xfer *xfer; 138 struct fw_pkt *fp; 139 140 xfer = fwmem_xfer_req(fwdev, (void *)sc, spd, 0, 4, hand); 141 if (xfer == NULL) { 142 return NULL; 143 } 144 145 fp = &xfer->send.hdr; 146 fp->mode.rreqq.tcode = FWTCODE_RREQQ; 147 fp->mode.rreqq.dest_hi = dst_hi; 148 fp->mode.rreqq.dest_lo = dst_lo; 149 150 xfer->send.payload = NULL; 151 xfer->recv.payload = (u_int32_t *)data; 152 153 if (fwmem_debug) 154 printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst, 155 dst_hi, dst_lo); 156 157 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 158 return xfer; 159 160 fw_xfer_free(xfer); 161 return NULL; 162 } 163 164 struct fw_xfer * 165 fwmem_write_quad( 166 struct fw_device *fwdev, 167 caddr_t sc, 168 u_int8_t spd, 169 u_int16_t dst_hi, 170 u_int32_t dst_lo, 171 void *data, 172 void (*hand)(struct fw_xfer *)) 173 { 174 struct fw_xfer *xfer; 175 struct fw_pkt *fp; 176 177 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, 0, hand); 178 if (xfer == NULL) 179 return NULL; 180 181 fp = &xfer->send.hdr; 182 fp->mode.wreqq.tcode = FWTCODE_WREQQ; 183 fp->mode.wreqq.dest_hi = dst_hi; 184 fp->mode.wreqq.dest_lo = dst_lo; 185 fp->mode.wreqq.data = *(u_int32_t *)data; 186 187 xfer->send.payload = xfer->recv.payload = NULL; 188 189 if (fwmem_debug) 190 printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst, 191 dst_hi, dst_lo, *(u_int32_t *)data); 192 193 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 194 return xfer; 195 196 fw_xfer_free(xfer); 197 return NULL; 198 } 199 200 struct fw_xfer * 201 fwmem_read_block( 202 struct fw_device *fwdev, 203 caddr_t sc, 204 u_int8_t spd, 205 u_int16_t dst_hi, 206 u_int32_t dst_lo, 207 int len, 208 void *data, 209 void (*hand)(struct fw_xfer *)) 210 { 211 struct fw_xfer *xfer; 212 struct fw_pkt *fp; 213 214 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, roundup2(len, 4), hand); 215 if (xfer == NULL) 216 return NULL; 217 218 fp = &xfer->send.hdr; 219 fp->mode.rreqb.tcode = FWTCODE_RREQB; 220 fp->mode.rreqb.dest_hi = dst_hi; 221 fp->mode.rreqb.dest_lo = dst_lo; 222 fp->mode.rreqb.len = len; 223 fp->mode.rreqb.extcode = 0; 224 225 xfer->send.payload = NULL; 226 xfer->recv.payload = data; 227 228 if (fwmem_debug) 229 printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst, 230 dst_hi, dst_lo, len); 231 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 232 return xfer; 233 234 fw_xfer_free(xfer); 235 return NULL; 236 } 237 238 struct fw_xfer * 239 fwmem_write_block( 240 struct fw_device *fwdev, 241 caddr_t sc, 242 u_int8_t spd, 243 u_int16_t dst_hi, 244 u_int32_t dst_lo, 245 int len, 246 void *data, 247 void (*hand)(struct fw_xfer *)) 248 { 249 struct fw_xfer *xfer; 250 struct fw_pkt *fp; 251 252 xfer = fwmem_xfer_req(fwdev, sc, spd, len, 0, hand); 253 if (xfer == NULL) 254 return NULL; 255 256 fp = &xfer->send.hdr; 257 fp->mode.wreqb.tcode = FWTCODE_WREQB; 258 fp->mode.wreqb.dest_hi = dst_hi; 259 fp->mode.wreqb.dest_lo = dst_lo; 260 fp->mode.wreqb.len = len; 261 fp->mode.wreqb.extcode = 0; 262 263 xfer->send.payload = data; 264 xfer->recv.payload = NULL; 265 266 if (fwmem_debug) 267 printf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst, 268 dst_hi, dst_lo, len); 269 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 270 return xfer; 271 272 fw_xfer_free(xfer); 273 return NULL; 274 } 275 276 277 int 278 fwmem_open (dev_t dev, int flags, int fmt, fw_proc *td) 279 { 280 struct fwmem_softc *fms; 281 282 if (dev->si_drv1 != NULL) { 283 if ((flags & FWRITE) != 0) 284 return (EBUSY); 285 fms = (struct fwmem_softc *)dev->si_drv1; 286 fms->refcount ++; 287 } else { 288 fms = (struct fwmem_softc *)malloc(sizeof(struct fwmem_softc), 289 M_FWMEM, M_WAITOK); 290 if (fms == NULL) 291 return ENOMEM; 292 bcopy(&fwmem_eui64, &fms->eui, sizeof(struct fw_eui64)); 293 dev->si_drv1 = (void *)fms; 294 dev->si_iosize_max = DFLTPHYS; 295 fms->refcount = 1; 296 } 297 if (fwmem_debug) 298 printf("%s: refcount=%d\n", __FUNCTION__, fms->refcount); 299 300 return (0); 301 } 302 303 int 304 fwmem_close (dev_t dev, int flags, int fmt, fw_proc *td) 305 { 306 struct fwmem_softc *fms; 307 308 fms = (struct fwmem_softc *)dev->si_drv1; 309 fms->refcount --; 310 if (fwmem_debug) 311 printf("%s: refcount=%d\n", __FUNCTION__, fms->refcount); 312 if (fms->refcount < 1) { 313 free(dev->si_drv1, M_FW); 314 dev->si_drv1 = NULL; 315 } 316 317 return (0); 318 } 319 320 321 static void 322 fwmem_biodone(struct fw_xfer *xfer) 323 { 324 struct bio *bp; 325 326 bp = (struct bio *)xfer->sc; 327 bp->bio_error = xfer->resp; 328 329 if (bp->bio_error != 0) { 330 if (fwmem_debug) 331 printf("%s: err=%d\n", __FUNCTION__, bp->bio_error); 332 bp->bio_flags |= BIO_ERROR; 333 bp->bio_resid = bp->bio_bcount; 334 } 335 336 fw_xfer_free(xfer); 337 biodone(bp); 338 } 339 340 void 341 fwmem_strategy(struct bio *bp) 342 { 343 struct firewire_softc *sc; 344 struct fwmem_softc *fms; 345 struct fw_device *fwdev; 346 struct fw_xfer *xfer; 347 dev_t dev; 348 int unit, err=0, s, iolen; 349 350 dev = bp->bio_dev; 351 /* XXX check request length */ 352 353 unit = DEV2UNIT(dev); 354 sc = devclass_get_softc(firewire_devclass, unit); 355 356 s = splfw(); 357 fms = (struct fwmem_softc *)dev->si_drv1; 358 fwdev = fw_noderesolve_eui64(sc->fc, &fms->eui); 359 if (fwdev == NULL) { 360 if (fwmem_debug) 361 printf("fwmem: no such device ID:%08x%08x\n", 362 fms->eui.hi, fms->eui.lo); 363 err = EINVAL; 364 goto error; 365 } 366 367 iolen = MIN(bp->bio_bcount, MAXLEN); 368 if ((bp->bio_cmd & BIO_READ) == BIO_READ) { 369 if (iolen == 4 && (bp->bio_offset & 3) == 0) 370 xfer = fwmem_read_quad(fwdev, 371 (void *) bp, fwmem_speed, 372 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 373 bp->bio_data, fwmem_biodone); 374 else 375 xfer = fwmem_read_block(fwdev, 376 (void *) bp, fwmem_speed, 377 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 378 iolen, bp->bio_data, fwmem_biodone); 379 } else { 380 if (iolen == 4 && (bp->bio_offset & 3) == 0) 381 xfer = fwmem_write_quad(fwdev, 382 (void *)bp, fwmem_speed, 383 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 384 bp->bio_data, fwmem_biodone); 385 else 386 xfer = fwmem_write_block(fwdev, 387 (void *)bp, fwmem_speed, 388 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 389 iolen, bp->bio_data, fwmem_biodone); 390 } 391 if (xfer == NULL) { 392 err = EIO; 393 goto error; 394 } 395 /* XXX */ 396 bp->bio_resid = bp->bio_bcount - iolen; 397 error: 398 splx(s); 399 if (err != 0) { 400 if (fwmem_debug) 401 printf("%s: err=%d\n", __FUNCTION__, err); 402 bp->bio_error = err; 403 bp->bio_flags |= BIO_ERROR; 404 bp->bio_resid = bp->bio_bcount; 405 biodone(bp); 406 } 407 } 408 409 int 410 fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 411 { 412 struct fwmem_softc *fms; 413 int err = 0; 414 415 fms = (struct fwmem_softc *)dev->si_drv1; 416 switch (cmd) { 417 case FW_SDEUI64: 418 bcopy(data, &fms->eui, sizeof(struct fw_eui64)); 419 break; 420 case FW_GDEUI64: 421 bcopy(&fms->eui, data, sizeof(struct fw_eui64)); 422 break; 423 default: 424 err = EINVAL; 425 } 426 return(err); 427 } 428 int 429 fwmem_poll (dev_t dev, int events, fw_proc *td) 430 { 431 return EINVAL; 432 } 433 int 434 #if defined(__DragonFly__) || __FreeBSD_version < 500102 435 fwmem_mmap (dev_t dev, vm_offset_t offset, int nproto) 436 #else 437 fwmem_mmap (dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nproto) 438 #endif 439 { 440 return EINVAL; 441 } 442