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 1.9 2006/04/30 17:22:15 dillon 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 #include <sys/thread2.h> 64 65 #ifdef __DragonFly__ 66 #include "firewire.h" 67 #include "firewirereg.h" 68 #include "fwmem.h" 69 #else 70 #include <dev/firewire/firewire.h> 71 #include <dev/firewire/firewirereg.h> 72 #include <dev/firewire/fwmem.h> 73 #endif 74 75 static int fwmem_speed=2, fwmem_debug=0; 76 static struct fw_eui64 fwmem_eui64; 77 SYSCTL_DECL(_hw_firewire); 78 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0, 79 "FireWire Memory Access"); 80 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW, 81 &fwmem_eui64.hi, 0, "Fwmem target EUI64 high"); 82 SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW, 83 &fwmem_eui64.lo, 0, "Fwmem target EUI64 low"); 84 SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0, 85 "Fwmem link speed"); 86 SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0, 87 "Fwmem driver debug flag"); 88 89 MALLOC_DEFINE(M_FWMEM, "fwmem", "fwmem/FireWire"); 90 91 #define MAXLEN (512 << fwmem_speed) 92 93 struct fwmem_softc { 94 struct fw_eui64 eui; 95 int refcount; 96 }; 97 98 static struct fw_xfer * 99 fwmem_xfer_req( 100 struct fw_device *fwdev, 101 caddr_t sc, 102 int spd, 103 int slen, 104 int rlen, 105 void *hand) 106 { 107 struct fw_xfer *xfer; 108 109 xfer = fw_xfer_alloc(M_FWMEM); 110 if (xfer == NULL) 111 return NULL; 112 113 xfer->fc = fwdev->fc; 114 xfer->send.hdr.mode.hdr.dst = FWLOCALBUS | fwdev->dst; 115 if (spd < 0) 116 xfer->send.spd = fwdev->speed; 117 else 118 xfer->send.spd = min(spd, fwdev->speed); 119 xfer->act.hand = hand; 120 xfer->retry_req = fw_asybusy; 121 xfer->sc = sc; 122 xfer->send.pay_len = slen; 123 xfer->recv.pay_len = rlen; 124 125 return xfer; 126 } 127 128 struct fw_xfer * 129 fwmem_read_quad( 130 struct fw_device *fwdev, 131 caddr_t sc, 132 u_int8_t spd, 133 u_int16_t dst_hi, 134 u_int32_t dst_lo, 135 void *data, 136 void (*hand)(struct fw_xfer *)) 137 { 138 struct fw_xfer *xfer; 139 struct fw_pkt *fp; 140 141 xfer = fwmem_xfer_req(fwdev, (void *)sc, spd, 0, 4, hand); 142 if (xfer == NULL) { 143 return NULL; 144 } 145 146 fp = &xfer->send.hdr; 147 fp->mode.rreqq.tcode = FWTCODE_RREQQ; 148 fp->mode.rreqq.dest_hi = dst_hi; 149 fp->mode.rreqq.dest_lo = dst_lo; 150 151 xfer->send.payload = NULL; 152 xfer->recv.payload = (u_int32_t *)data; 153 154 if (fwmem_debug) 155 printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst, 156 dst_hi, dst_lo); 157 158 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 159 return xfer; 160 161 fw_xfer_free(xfer); 162 return NULL; 163 } 164 165 struct fw_xfer * 166 fwmem_write_quad( 167 struct fw_device *fwdev, 168 caddr_t sc, 169 u_int8_t spd, 170 u_int16_t dst_hi, 171 u_int32_t dst_lo, 172 void *data, 173 void (*hand)(struct fw_xfer *)) 174 { 175 struct fw_xfer *xfer; 176 struct fw_pkt *fp; 177 178 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, 0, hand); 179 if (xfer == NULL) 180 return NULL; 181 182 fp = &xfer->send.hdr; 183 fp->mode.wreqq.tcode = FWTCODE_WREQQ; 184 fp->mode.wreqq.dest_hi = dst_hi; 185 fp->mode.wreqq.dest_lo = dst_lo; 186 fp->mode.wreqq.data = *(u_int32_t *)data; 187 188 xfer->send.payload = xfer->recv.payload = NULL; 189 190 if (fwmem_debug) 191 printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst, 192 dst_hi, dst_lo, *(u_int32_t *)data); 193 194 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 195 return xfer; 196 197 fw_xfer_free(xfer); 198 return NULL; 199 } 200 201 struct fw_xfer * 202 fwmem_read_block( 203 struct fw_device *fwdev, 204 caddr_t sc, 205 u_int8_t spd, 206 u_int16_t dst_hi, 207 u_int32_t dst_lo, 208 int len, 209 void *data, 210 void (*hand)(struct fw_xfer *)) 211 { 212 struct fw_xfer *xfer; 213 struct fw_pkt *fp; 214 215 xfer = fwmem_xfer_req(fwdev, sc, spd, 0, roundup2(len, 4), hand); 216 if (xfer == NULL) 217 return NULL; 218 219 fp = &xfer->send.hdr; 220 fp->mode.rreqb.tcode = FWTCODE_RREQB; 221 fp->mode.rreqb.dest_hi = dst_hi; 222 fp->mode.rreqb.dest_lo = dst_lo; 223 fp->mode.rreqb.len = len; 224 fp->mode.rreqb.extcode = 0; 225 226 xfer->send.payload = NULL; 227 xfer->recv.payload = data; 228 229 if (fwmem_debug) 230 printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst, 231 dst_hi, dst_lo, len); 232 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 233 return xfer; 234 235 fw_xfer_free(xfer); 236 return NULL; 237 } 238 239 struct fw_xfer * 240 fwmem_write_block( 241 struct fw_device *fwdev, 242 caddr_t sc, 243 u_int8_t spd, 244 u_int16_t dst_hi, 245 u_int32_t dst_lo, 246 int len, 247 void *data, 248 void (*hand)(struct fw_xfer *)) 249 { 250 struct fw_xfer *xfer; 251 struct fw_pkt *fp; 252 253 xfer = fwmem_xfer_req(fwdev, sc, spd, len, 0, hand); 254 if (xfer == NULL) 255 return NULL; 256 257 fp = &xfer->send.hdr; 258 fp->mode.wreqb.tcode = FWTCODE_WREQB; 259 fp->mode.wreqb.dest_hi = dst_hi; 260 fp->mode.wreqb.dest_lo = dst_lo; 261 fp->mode.wreqb.len = len; 262 fp->mode.wreqb.extcode = 0; 263 264 xfer->send.payload = data; 265 xfer->recv.payload = NULL; 266 267 if (fwmem_debug) 268 printf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst, 269 dst_hi, dst_lo, len); 270 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 271 return xfer; 272 273 fw_xfer_free(xfer); 274 return NULL; 275 } 276 277 278 int 279 fwmem_open (dev_t dev, int flags, int fmt, fw_proc *td) 280 { 281 struct fwmem_softc *fms; 282 283 if (dev->si_drv1 != NULL) { 284 if ((flags & FWRITE) != 0) 285 return (EBUSY); 286 fms = (struct fwmem_softc *)dev->si_drv1; 287 fms->refcount ++; 288 } else { 289 fms = (struct fwmem_softc *)malloc(sizeof(struct fwmem_softc), 290 M_FWMEM, M_WAITOK); 291 if (fms == NULL) 292 return ENOMEM; 293 bcopy(&fwmem_eui64, &fms->eui, sizeof(struct fw_eui64)); 294 dev->si_drv1 = (void *)fms; 295 dev->si_iosize_max = DFLTPHYS; 296 fms->refcount = 1; 297 } 298 if (fwmem_debug) 299 printf("%s: refcount=%d\n", __func__, fms->refcount); 300 301 return (0); 302 } 303 304 int 305 fwmem_close (dev_t dev, int flags, int fmt, fw_proc *td) 306 { 307 struct fwmem_softc *fms; 308 309 fms = (struct fwmem_softc *)dev->si_drv1; 310 fms->refcount --; 311 if (fwmem_debug) 312 printf("%s: refcount=%d\n", __func__, fms->refcount); 313 if (fms->refcount < 1) { 314 free(dev->si_drv1, M_FW); 315 dev->si_drv1 = NULL; 316 } 317 318 return (0); 319 } 320 321 322 static void 323 fwmem_biodone(struct fw_xfer *xfer) 324 { 325 struct bio *bio; 326 struct buf *bp; 327 328 bio = (struct bio *)xfer->sc; 329 bp = bio->bio_buf; 330 bp->b_error = xfer->resp; 331 332 if (bp->b_error != 0) { 333 if (fwmem_debug) 334 printf("%s: err=%d\n", __func__, bp->b_error); 335 bp->b_flags |= B_ERROR; 336 bp->b_resid = bp->b_bcount; 337 } 338 fw_xfer_free(xfer); 339 biodone(bio); 340 } 341 342 void 343 fwmem_strategy(dev_t dev, struct bio *bio) 344 { 345 struct buf *bp = bio->bio_buf; 346 struct firewire_softc *sc; 347 struct fwmem_softc *fms; 348 struct fw_device *fwdev; 349 struct fw_xfer *xfer; 350 int unit, err=0, iolen; 351 352 /* XXX check request length */ 353 354 unit = DEV2UNIT(dev); 355 sc = devclass_get_softc(firewire_devclass, unit); 356 357 crit_enter(); 358 fms = (struct fwmem_softc *)dev->si_drv1; 359 fwdev = fw_noderesolve_eui64(sc->fc, &fms->eui); 360 if (fwdev == NULL) { 361 if (fwmem_debug) 362 printf("fwmem: no such device ID:%08x%08x\n", 363 fms->eui.hi, fms->eui.lo); 364 err = EINVAL; 365 goto error; 366 } 367 if (bio->bio_offset == NOOFFSET) { 368 printf("fwmem: offset was not set bp %p\n", bp); 369 err = EINVAL; 370 goto error; 371 } 372 373 iolen = MIN(bp->b_bcount, MAXLEN); 374 if (bp->b_cmd == BUF_CMD_READ) { 375 if (iolen == 4 && (bio->bio_offset & 3) == 0) 376 xfer = fwmem_read_quad(fwdev, 377 (void *) bio, fwmem_speed, 378 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 379 bp->b_data, fwmem_biodone); 380 else 381 xfer = fwmem_read_block(fwdev, 382 (void *) bio, fwmem_speed, 383 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 384 iolen, bp->b_data, fwmem_biodone); 385 } else { 386 if (iolen == 4 && (bio->bio_offset & 3) == 0) 387 xfer = fwmem_write_quad(fwdev, 388 (void *)bio, fwmem_speed, 389 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 390 bp->b_data, fwmem_biodone); 391 else 392 xfer = fwmem_write_block(fwdev, 393 (void *)bio, fwmem_speed, 394 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 395 iolen, bp->b_data, fwmem_biodone); 396 } 397 if (xfer == NULL) { 398 err = EIO; 399 goto error; 400 } 401 /* XXX */ 402 bp->b_resid = bp->b_bcount - iolen; 403 error: 404 crit_exit(); 405 if (err != 0) { 406 if (fwmem_debug) 407 printf("%s: err=%d\n", __func__, err); 408 bp->b_error = err; 409 bp->b_flags |= B_ERROR; 410 bp->b_resid = bp->b_bcount; 411 biodone(bio); 412 } 413 } 414 415 int 416 fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 417 { 418 struct fwmem_softc *fms; 419 int err = 0; 420 421 fms = (struct fwmem_softc *)dev->si_drv1; 422 switch (cmd) { 423 case FW_SDEUI64: 424 bcopy(data, &fms->eui, sizeof(struct fw_eui64)); 425 break; 426 case FW_GDEUI64: 427 bcopy(&fms->eui, data, sizeof(struct fw_eui64)); 428 break; 429 default: 430 err = EINVAL; 431 } 432 return(err); 433 } 434 int 435 fwmem_poll (dev_t dev, int events, fw_proc *td) 436 { 437 return EINVAL; 438 } 439 int 440 #if defined(__DragonFly__) || __FreeBSD_version < 500102 441 fwmem_mmap (dev_t dev, vm_offset_t offset, int nproto) 442 #else 443 fwmem_mmap (dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nproto) 444 #endif 445 { 446 return EINVAL; 447 } 448