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 1.15 2006/12/22 23:12:16 swildner 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/bus.h> 50 #include <sys/sysctl.h> 51 #if defined(__DragonFly__) || __FreeBSD_version < 500000 52 #include <sys/buf.h> 53 #else 54 #include <sys/bio.h> 55 #endif 56 57 #include <sys/signal.h> 58 #include <sys/mman.h> 59 #include <sys/ioccom.h> 60 #include <sys/fcntl.h> 61 #include <sys/thread2.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 u_int8_t spd, 131 u_int16_t dst_hi, 132 u_int32_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 = (u_int32_t *)data; 151 152 if (fwmem_debug) 153 kprintf("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 u_int8_t spd, 168 u_int16_t dst_hi, 169 u_int32_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 = *(u_int32_t *)data; 185 186 xfer->send.payload = xfer->recv.payload = NULL; 187 188 if (fwmem_debug) 189 kprintf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst, 190 dst_hi, dst_lo, *(u_int32_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 u_int8_t spd, 204 u_int16_t dst_hi, 205 u_int32_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 kprintf("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 u_int8_t spd, 242 u_int16_t dst_hi, 243 u_int32_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 kprintf("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 dev_open_args *ap) 278 { 279 cdev_t dev = ap->a_head.a_dev; 280 struct fwmem_softc *fms; 281 282 if (dev->si_drv1 != NULL) { 283 if ((ap->a_oflags & FWRITE) != 0) 284 return (EBUSY); 285 fms = (struct fwmem_softc *)dev->si_drv1; 286 fms->refcount ++; 287 } else { 288 fms = (struct fwmem_softc *)kmalloc(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 kprintf("%s: refcount=%d\n", __func__, fms->refcount); 299 300 return (0); 301 } 302 303 int 304 fwmem_close (struct dev_close_args *ap) 305 { 306 cdev_t dev = ap->a_head.a_dev; 307 struct fwmem_softc *fms; 308 309 fms = (struct fwmem_softc *)dev->si_drv1; 310 fms->refcount --; 311 if (fwmem_debug) 312 kprintf("%s: refcount=%d\n", __func__, fms->refcount); 313 if (fms->refcount < 1) { 314 kfree(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 kprintf("%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 int 343 fwmem_strategy(struct dev_strategy_args *ap) 344 { 345 cdev_t dev = ap->a_head.a_dev; 346 struct bio *bio = ap->a_bio; 347 struct buf *bp = bio->bio_buf; 348 struct firewire_softc *sc; 349 struct fwmem_softc *fms; 350 struct fw_device *fwdev; 351 struct fw_xfer *xfer; 352 int unit, err=0, iolen; 353 354 /* XXX check request length */ 355 356 unit = DEV2UNIT(dev); 357 sc = devclass_get_softc(firewire_devclass, unit); 358 359 crit_enter(); 360 fms = (struct fwmem_softc *)dev->si_drv1; 361 fwdev = fw_noderesolve_eui64(sc->fc, &fms->eui); 362 if (fwdev == NULL) { 363 if (fwmem_debug) 364 kprintf("fwmem: no such device ID:%08x%08x\n", 365 fms->eui.hi, fms->eui.lo); 366 err = EINVAL; 367 goto error; 368 } 369 if (bio->bio_offset == NOOFFSET) { 370 kprintf("fwmem: offset was not set bp %p\n", bp); 371 err = EINVAL; 372 goto error; 373 } 374 375 iolen = MIN(bp->b_bcount, MAXLEN); 376 if (bp->b_cmd == BUF_CMD_READ) { 377 if (iolen == 4 && (bio->bio_offset & 3) == 0) 378 xfer = fwmem_read_quad(fwdev, 379 (void *) bio, fwmem_speed, 380 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 381 bp->b_data, fwmem_biodone); 382 else 383 xfer = fwmem_read_block(fwdev, 384 (void *) bio, fwmem_speed, 385 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 386 iolen, bp->b_data, fwmem_biodone); 387 } else { 388 if (iolen == 4 && (bio->bio_offset & 3) == 0) 389 xfer = fwmem_write_quad(fwdev, 390 (void *)bio, fwmem_speed, 391 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 392 bp->b_data, fwmem_biodone); 393 else 394 xfer = fwmem_write_block(fwdev, 395 (void *)bio, fwmem_speed, 396 bio->bio_offset >> 32, bio->bio_offset & 0xffffffff, 397 iolen, bp->b_data, fwmem_biodone); 398 } 399 if (xfer == NULL) { 400 err = EIO; 401 goto error; 402 } 403 /* XXX */ 404 bp->b_resid = bp->b_bcount - iolen; 405 error: 406 crit_exit(); 407 if (err != 0) { 408 if (fwmem_debug) 409 kprintf("%s: err=%d\n", __func__, err); 410 bp->b_error = err; 411 bp->b_flags |= B_ERROR; 412 bp->b_resid = bp->b_bcount; 413 biodone(bio); 414 } 415 return(0); 416 } 417 418 int 419 fwmem_ioctl(struct dev_ioctl_args *ap) 420 { 421 cdev_t dev = ap->a_head.a_dev; 422 struct fwmem_softc *fms; 423 int err = 0; 424 425 fms = (struct fwmem_softc *)dev->si_drv1; 426 switch (ap->a_cmd) { 427 case FW_SDEUI64: 428 bcopy(ap->a_data, &fms->eui, sizeof(struct fw_eui64)); 429 break; 430 case FW_GDEUI64: 431 bcopy(&fms->eui, ap->a_data, sizeof(struct fw_eui64)); 432 break; 433 default: 434 err = EINVAL; 435 } 436 return(err); 437 } 438 int 439 fwmem_poll(struct dev_poll_args *ap) 440 { 441 return EINVAL; 442 } 443 int 444 fwmem_mmap(struct dev_mmap_args *ap) 445 { 446 return EINVAL; 447 } 448