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 */ 35 36 #ifdef __FreeBSD__ 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/types.h> 44 45 #include <sys/kernel.h> 46 #include <sys/malloc.h> 47 #include <sys/conf.h> 48 #include <sys/sysctl.h> 49 #if defined(__DragonFly__) || __FreeBSD_version < 500000 50 #include <sys/buf.h> 51 #else 52 #include <sys/bio.h> 53 #endif 54 55 #include <sys/bus.h> 56 #include <machine/bus.h> 57 58 #include <sys/signal.h> 59 #include <sys/mman.h> 60 #include <sys/ioccom.h> 61 #include <sys/fcntl.h> 62 63 #ifdef __DragonFly__ 64 #include "firewire.h" 65 #include "firewirereg.h" 66 #include "fwmem.h" 67 #else 68 #include <dev/firewire/firewire.h> 69 #include <dev/firewire/firewirereg.h> 70 #include <dev/firewire/fwmem.h> 71 #endif 72 73 static int fwmem_speed=2, fwmem_debug=0; 74 static struct fw_eui64 fwmem_eui64; 75 SYSCTL_DECL(_hw_firewire); 76 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0, 77 "FireWire Memory Access"); 78 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW, 79 &fwmem_eui64.hi, 0, "Fwmem target EUI64 high"); 80 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW, 81 &fwmem_eui64.lo, 0, "Fwmem target EUI64 low"); 82 SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0, 83 "Fwmem link speed"); 84 SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0, 85 "Fwmem driver debug flag"); 86 87 MALLOC_DEFINE(M_FWMEM, "fwmem", "fwmem/FireWire"); 88 89 #define MAXLEN (512 << fwmem_speed) 90 91 struct fwmem_softc { 92 struct fw_eui64 eui; 93 int refcount; 94 }; 95 96 static struct fw_xfer * 97 fwmem_xfer_req( 98 struct fw_device *fwdev, 99 caddr_t sc, 100 int spd, 101 int slen, 102 int rlen, 103 void *hand) 104 { 105 struct fw_xfer *xfer; 106 107 xfer = fw_xfer_alloc(M_FWMEM); 108 if (xfer == NULL) 109 return NULL; 110 111 xfer->fc = fwdev->fc; 112 xfer->send.hdr.mode.hdr.dst = FWLOCALBUS | fwdev->dst; 113 if (spd < 0) 114 xfer->send.spd = fwdev->speed; 115 else 116 xfer->send.spd = min(spd, fwdev->speed); 117 xfer->act.hand = hand; 118 xfer->retry_req = fw_asybusy; 119 xfer->sc = sc; 120 xfer->send.pay_len = slen; 121 xfer->recv.pay_len = rlen; 122 123 return xfer; 124 } 125 126 struct fw_xfer * 127 fwmem_read_quad( 128 struct fw_device *fwdev, 129 caddr_t sc, 130 uint8_t spd, 131 uint16_t dst_hi, 132 uint32_t dst_lo, 133 void *data, 134 void (*hand)(struct fw_xfer *)) 135 { 136 struct fw_xfer *xfer; 137 struct fw_pkt *fp; 138 139 xfer = fwmem_xfer_req(fwdev, (void *)sc, spd, 0, 4, hand); 140 if (xfer == NULL) { 141 return NULL; 142 } 143 144 fp = &xfer->send.hdr; 145 fp->mode.rreqq.tcode = FWTCODE_RREQQ; 146 fp->mode.rreqq.dest_hi = dst_hi; 147 fp->mode.rreqq.dest_lo = dst_lo; 148 149 xfer->send.payload = NULL; 150 xfer->recv.payload = (uint32_t *)data; 151 152 if (fwmem_debug) 153 printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst, 154 dst_hi, dst_lo); 155 156 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 157 return xfer; 158 159 fw_xfer_free(xfer); 160 return NULL; 161 } 162 163 struct fw_xfer * 164 fwmem_write_quad( 165 struct fw_device *fwdev, 166 caddr_t sc, 167 uint8_t spd, 168 uint16_t dst_hi, 169 uint32_t dst_lo, 170 void *data, 171 void (*hand)(struct fw_xfer *)) 172 { 173 struct fw_xfer *xfer; 174 struct fw_pkt *fp; 175 176 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, 0, hand); 177 if (xfer == NULL) 178 return NULL; 179 180 fp = &xfer->send.hdr; 181 fp->mode.wreqq.tcode = FWTCODE_WREQQ; 182 fp->mode.wreqq.dest_hi = dst_hi; 183 fp->mode.wreqq.dest_lo = dst_lo; 184 fp->mode.wreqq.data = *(uint32_t *)data; 185 186 xfer->send.payload = xfer->recv.payload = NULL; 187 188 if (fwmem_debug) 189 printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst, 190 dst_hi, dst_lo, *(uint32_t *)data); 191 192 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 193 return xfer; 194 195 fw_xfer_free(xfer); 196 return NULL; 197 } 198 199 struct fw_xfer * 200 fwmem_read_block( 201 struct fw_device *fwdev, 202 caddr_t sc, 203 uint8_t spd, 204 uint16_t dst_hi, 205 uint32_t dst_lo, 206 int len, 207 void *data, 208 void (*hand)(struct fw_xfer *)) 209 { 210 struct fw_xfer *xfer; 211 struct fw_pkt *fp; 212 213 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, roundup2(len, 4), hand); 214 if (xfer == NULL) 215 return NULL; 216 217 fp = &xfer->send.hdr; 218 fp->mode.rreqb.tcode = FWTCODE_RREQB; 219 fp->mode.rreqb.dest_hi = dst_hi; 220 fp->mode.rreqb.dest_lo = dst_lo; 221 fp->mode.rreqb.len = len; 222 fp->mode.rreqb.extcode = 0; 223 224 xfer->send.payload = NULL; 225 xfer->recv.payload = data; 226 227 if (fwmem_debug) 228 printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst, 229 dst_hi, dst_lo, len); 230 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 231 return xfer; 232 233 fw_xfer_free(xfer); 234 return NULL; 235 } 236 237 struct fw_xfer * 238 fwmem_write_block( 239 struct fw_device *fwdev, 240 caddr_t sc, 241 uint8_t spd, 242 uint16_t dst_hi, 243 uint32_t dst_lo, 244 int len, 245 void *data, 246 void (*hand)(struct fw_xfer *)) 247 { 248 struct fw_xfer *xfer; 249 struct fw_pkt *fp; 250 251 xfer = fwmem_xfer_req(fwdev, sc, spd, len, 0, hand); 252 if (xfer == NULL) 253 return NULL; 254 255 fp = &xfer->send.hdr; 256 fp->mode.wreqb.tcode = FWTCODE_WREQB; 257 fp->mode.wreqb.dest_hi = dst_hi; 258 fp->mode.wreqb.dest_lo = dst_lo; 259 fp->mode.wreqb.len = len; 260 fp->mode.wreqb.extcode = 0; 261 262 xfer->send.payload = data; 263 xfer->recv.payload = NULL; 264 265 if (fwmem_debug) 266 printf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst, 267 dst_hi, dst_lo, len); 268 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 269 return xfer; 270 271 fw_xfer_free(xfer); 272 return NULL; 273 } 274 275 276 int 277 fwmem_open (struct cdev *dev, int flags, int fmt, fw_proc *td) 278 { 279 struct fwmem_softc *fms; 280 281 if (dev->si_drv1 != NULL) { 282 if ((flags & FWRITE) != 0) 283 return (EBUSY); 284 fms = (struct fwmem_softc *)dev->si_drv1; 285 fms->refcount ++; 286 } else { 287 fms = (struct fwmem_softc *)malloc(sizeof(struct fwmem_softc), 288 M_FWMEM, M_WAITOK); 289 if (fms == NULL) 290 return ENOMEM; 291 bcopy(&fwmem_eui64, &fms->eui, sizeof(struct fw_eui64)); 292 dev->si_drv1 = (void *)fms; 293 dev->si_iosize_max = DFLTPHYS; 294 fms->refcount = 1; 295 } 296 if (fwmem_debug) 297 printf("%s: refcount=%d\n", __func__, fms->refcount); 298 299 return (0); 300 } 301 302 int 303 fwmem_close (struct cdev *dev, int flags, int fmt, fw_proc *td) 304 { 305 struct fwmem_softc *fms; 306 307 fms = (struct fwmem_softc *)dev->si_drv1; 308 fms->refcount --; 309 if (fwmem_debug) 310 printf("%s: refcount=%d\n", __func__, fms->refcount); 311 if (fms->refcount < 1) { 312 free(dev->si_drv1, M_FWMEM); 313 dev->si_drv1 = NULL; 314 } 315 316 return (0); 317 } 318 319 320 static void 321 fwmem_biodone(struct fw_xfer *xfer) 322 { 323 struct bio *bp; 324 325 bp = (struct bio *)xfer->sc; 326 bp->bio_error = xfer->resp; 327 328 if (bp->bio_error != 0) { 329 if (fwmem_debug) 330 printf("%s: err=%d\n", __func__, bp->bio_error); 331 bp->bio_flags |= BIO_ERROR; 332 bp->bio_resid = bp->bio_bcount; 333 } 334 335 fw_xfer_free(xfer); 336 biodone(bp); 337 } 338 339 void 340 fwmem_strategy(struct bio *bp) 341 { 342 struct firewire_softc *sc; 343 struct fwmem_softc *fms; 344 struct fw_device *fwdev; 345 struct fw_xfer *xfer; 346 struct cdev *dev; 347 int unit, err=0, s, iolen; 348 349 dev = bp->bio_dev; 350 /* XXX check request length */ 351 352 unit = DEV2UNIT(dev); 353 sc = devclass_get_softc(firewire_devclass, unit); 354 355 s = splfw(); 356 fms = (struct fwmem_softc *)dev->si_drv1; 357 fwdev = fw_noderesolve_eui64(sc->fc, &fms->eui); 358 if (fwdev == NULL) { 359 if (fwmem_debug) 360 printf("fwmem: no such device ID:%08x%08x\n", 361 fms->eui.hi, fms->eui.lo); 362 err = EINVAL; 363 goto error; 364 } 365 366 iolen = MIN(bp->bio_bcount, MAXLEN); 367 if ((bp->bio_cmd & BIO_READ) == BIO_READ) { 368 if (iolen == 4 && (bp->bio_offset & 3) == 0) 369 xfer = fwmem_read_quad(fwdev, 370 (void *) bp, fwmem_speed, 371 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 372 bp->bio_data, fwmem_biodone); 373 else 374 xfer = fwmem_read_block(fwdev, 375 (void *) bp, fwmem_speed, 376 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 377 iolen, bp->bio_data, fwmem_biodone); 378 } else { 379 if (iolen == 4 && (bp->bio_offset & 3) == 0) 380 xfer = fwmem_write_quad(fwdev, 381 (void *)bp, fwmem_speed, 382 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 383 bp->bio_data, fwmem_biodone); 384 else 385 xfer = fwmem_write_block(fwdev, 386 (void *)bp, fwmem_speed, 387 bp->bio_offset >> 32, bp->bio_offset & 0xffffffff, 388 iolen, bp->bio_data, fwmem_biodone); 389 } 390 if (xfer == NULL) { 391 err = EIO; 392 goto error; 393 } 394 /* XXX */ 395 bp->bio_resid = bp->bio_bcount - iolen; 396 error: 397 splx(s); 398 if (err != 0) { 399 if (fwmem_debug) 400 printf("%s: err=%d\n", __func__, err); 401 bp->bio_error = err; 402 bp->bio_flags |= BIO_ERROR; 403 bp->bio_resid = bp->bio_bcount; 404 biodone(bp); 405 } 406 } 407 408 int 409 fwmem_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 410 { 411 struct fwmem_softc *fms; 412 int err = 0; 413 414 fms = (struct fwmem_softc *)dev->si_drv1; 415 switch (cmd) { 416 case FW_SDEUI64: 417 bcopy(data, &fms->eui, sizeof(struct fw_eui64)); 418 break; 419 case FW_GDEUI64: 420 bcopy(&fms->eui, data, sizeof(struct fw_eui64)); 421 break; 422 default: 423 err = EINVAL; 424 } 425 return(err); 426 } 427 int 428 fwmem_poll (struct cdev *dev, int events, fw_proc *td) 429 { 430 return EINVAL; 431 } 432 int 433 #if defined(__DragonFly__) || __FreeBSD_version < 500102 434 fwmem_mmap (struct cdev *dev, vm_offset_t offset, int nproto) 435 #else 436 fwmem_mmap (struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int nproto) 437 #endif 438 { 439 return EINVAL; 440 } 441