fwmem.c revision 119418
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#include <sys/cdefs.h> 37__FBSDID("$FreeBSD: head/sys/dev/firewire/fwmem.c 119418 2003-08-24 17:55:58Z obrien $"); 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/types.h> 42 43#include <sys/kernel.h> 44#include <sys/malloc.h> 45#include <sys/conf.h> 46#include <sys/sysctl.h> 47 48#include <sys/bus.h> 49#include <machine/bus.h> 50 51#include <sys/signal.h> 52#include <sys/mman.h> 53#include <sys/ioccom.h> 54 55#include <dev/firewire/firewire.h> 56#include <dev/firewire/firewirereg.h> 57#include <dev/firewire/fwmem.h> 58 59static int fwmem_speed=2, fwmem_debug=0; 60static struct fw_eui64 fwmem_eui64; 61SYSCTL_DECL(_hw_firewire); 62SYSCTL_NODE(_hw_firewire, OID_AUTO, fwmem, CTLFLAG_RD, 0, 63 "FireWire Memory Access"); 64SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_hi, CTLFLAG_RW, 65 &fwmem_eui64.hi, 0, "Fwmem target EUI64 high"); 66SYSCTL_UINT(_hw_firewire_fwmem, OID_AUTO, eui64_lo, CTLFLAG_RW, 67 &fwmem_eui64.lo, 0, "Fwmem target EUI64 low"); 68SYSCTL_INT(_hw_firewire_fwmem, OID_AUTO, speed, CTLFLAG_RW, &fwmem_speed, 0, 69 "Fwmem link speed"); 70SYSCTL_INT(_debug, OID_AUTO, fwmem_debug, CTLFLAG_RW, &fwmem_debug, 0, 71 "Fwmem driver debug flag"); 72 73static struct fw_xfer * 74fwmem_xfer_req( 75 struct fw_device *fwdev, 76 caddr_t sc, 77 int spd, 78 int slen, 79 int rlen, 80 void *hand) 81{ 82 struct fw_xfer *xfer; 83 84 xfer = fw_xfer_alloc_buf(M_FWXFER, slen, rlen); 85 if (xfer == NULL) 86 return NULL; 87 88 xfer->fc = fwdev->fc; 89 xfer->dst = FWLOCALBUS | fwdev->dst; 90 if (spd < 0) 91 xfer->spd = fwdev->speed; 92 else 93 xfer->spd = min(spd, fwdev->speed); 94 xfer->act.hand = hand; 95 xfer->retry_req = fw_asybusy; 96 xfer->sc = sc; 97 98 return xfer; 99} 100 101struct fw_xfer * 102fwmem_read_quad( 103 struct fw_device *fwdev, 104 caddr_t sc, 105 u_int8_t spd, 106 u_int16_t dst_hi, 107 u_int32_t dst_lo, 108 void (*hand)(struct fw_xfer *)) 109{ 110 struct fw_xfer *xfer; 111 struct fw_pkt *fp; 112 113 xfer = fwmem_xfer_req(fwdev, sc, spd, 12, 16, hand); 114 if (xfer == NULL) 115 return NULL; 116 117 fp = (struct fw_pkt *)xfer->send.buf; 118 fp->mode.rreqq.tcode = FWTCODE_RREQQ; 119 fp->mode.rreqq.dst = xfer->dst; 120 fp->mode.rreqq.dest_hi = dst_hi; 121 fp->mode.rreqq.dest_lo = dst_lo; 122 123 if (fwmem_debug) 124 printf("fwmem_read_quad: %d %04x:%08x\n", fwdev->dst, 125 dst_hi, dst_lo); 126 127 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 128 return xfer; 129 130 fw_xfer_free(xfer); 131 return NULL; 132} 133 134struct fw_xfer * 135fwmem_write_quad( 136 struct fw_device *fwdev, 137 caddr_t sc, 138 u_int8_t spd, 139 u_int16_t dst_hi, 140 u_int32_t dst_lo, 141 u_int32_t data, 142 void (*hand)(struct fw_xfer *)) 143{ 144 struct fw_xfer *xfer; 145 struct fw_pkt *fp; 146 147 xfer = fwmem_xfer_req(fwdev, sc, spd, 16, 12, hand); 148 if (xfer == NULL) 149 return NULL; 150 151 fp = (struct fw_pkt *)xfer->send.buf; 152 fp->mode.wreqq.tcode = FWTCODE_WREQQ; 153 fp->mode.wreqq.dst = xfer->dst; 154 fp->mode.wreqq.dest_hi = dst_hi; 155 fp->mode.wreqq.dest_lo = dst_lo; 156 157 fp->mode.wreqq.data = data; 158 159 if (fwmem_debug) 160 printf("fwmem_write_quad: %d %04x:%08x %08x\n", fwdev->dst, 161 dst_hi, dst_lo, data); 162 163 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 164 return xfer; 165 166 fw_xfer_free(xfer); 167 return NULL; 168} 169 170struct fw_xfer * 171fwmem_read_block( 172 struct fw_device *fwdev, 173 caddr_t sc, 174 u_int8_t spd, 175 u_int16_t dst_hi, 176 u_int32_t dst_lo, 177 int len, 178 void (*hand)(struct fw_xfer *)) 179{ 180 struct fw_xfer *xfer; 181 struct fw_pkt *fp; 182 183 xfer = fwmem_xfer_req(fwdev, sc, spd, 16, roundup2(16+len,4), hand); 184 if (xfer == NULL) 185 return NULL; 186 187 fp = (struct fw_pkt *)xfer->send.buf; 188 fp->mode.rreqb.tcode = FWTCODE_RREQB; 189 fp->mode.rreqb.dst = xfer->dst; 190 fp->mode.rreqb.dest_hi = dst_hi; 191 fp->mode.rreqb.dest_lo = dst_lo; 192 fp->mode.rreqb.len = len; 193 194 if (fwmem_debug) 195 printf("fwmem_read_block: %d %04x:%08x %d\n", fwdev->dst, 196 dst_hi, dst_lo, len); 197 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 198 return xfer; 199 200 fw_xfer_free(xfer); 201 return NULL; 202} 203 204struct fw_xfer * 205fwmem_write_block( 206 struct fw_device *fwdev, 207 caddr_t sc, 208 u_int8_t spd, 209 u_int16_t dst_hi, 210 u_int32_t dst_lo, 211 int len, 212 char *data, 213 void (*hand)(struct fw_xfer *)) 214{ 215 struct fw_xfer *xfer; 216 struct fw_pkt *fp; 217 218 xfer = fwmem_xfer_req(fwdev, sc, spd, roundup(16+len, 4), 12, hand); 219 if (xfer == NULL) 220 return NULL; 221 222 fp = (struct fw_pkt *)xfer->send.buf; 223 fp->mode.wreqb.tcode = FWTCODE_WREQB; 224 fp->mode.wreqb.dst = xfer->dst; 225 fp->mode.wreqb.dest_hi = dst_hi; 226 fp->mode.wreqb.dest_lo = dst_lo; 227 fp->mode.wreqb.len = len; 228 bcopy(data, &fp->mode.wreqb.payload[0], len); 229 230 if (fwmem_debug) 231 printf("fwmem_write_block: %d %04x:%08x %d\n", fwdev->dst, 232 dst_hi, dst_lo, len); 233 if (fw_asyreq(xfer->fc, -1, xfer) == 0) 234 return xfer; 235 236 fw_xfer_free(xfer); 237 return NULL; 238} 239 240 241int 242fwmem_open (dev_t dev, int flags, int fmt, fw_proc *td) 243{ 244 struct fw_eui64 *eui; 245 246 if (dev->si_drv1 != NULL) 247 return (EBUSY); 248 249 eui = (struct fw_eui64 *)malloc(sizeof(struct fw_eui64), 250 M_FW, M_WAITOK); 251 if (eui == NULL) 252 return ENOMEM; 253 bcopy(&fwmem_eui64, eui, sizeof(struct fw_eui64)); 254 dev->si_drv1 = (void *)eui; 255 256 return (0); 257} 258 259int 260fwmem_close (dev_t dev, int flags, int fmt, fw_proc *td) 261{ 262 free(dev->si_drv1, M_FW); 263 dev->si_drv1 = NULL; 264 265 return (0); 266} 267 268#define MAXLEN 2048 269#define USE_QUAD 0 270int 271fwmem_read (dev_t dev, struct uio *uio, int ioflag) 272{ 273 struct firewire_softc *sc; 274 struct fw_device *fwdev; 275 struct fw_xfer *xfer; 276 int err = 0; 277 int unit = DEV2UNIT(dev); 278 u_int16_t dst_hi; 279 u_int32_t dst_lo; 280 off_t offset; 281 int len, s; 282 283 sc = devclass_get_softc(firewire_devclass, unit); 284 fwdev = fw_noderesolve_eui64(sc->fc, (struct fw_eui64 *)dev->si_drv1); 285 if (fwdev == NULL) { 286 if (fwmem_debug) 287 printf("fwmem: no such device ID:%08x%08x\n", 288 fwmem_eui64.hi, fwmem_eui64.lo); 289 return EINVAL; 290 } 291 292 while(uio->uio_resid > 0 && !err) { 293 offset = uio->uio_offset; 294 dst_hi = (offset >> 32) & 0xffff; 295 dst_lo = offset & 0xffffffff; 296 len = uio->uio_resid; 297 if (len == 4 && (dst_lo & 3) == 0) { 298 s = splfw(); 299 xfer = fwmem_read_quad(fwdev, NULL, fwmem_speed, 300 dst_hi, dst_lo, fw_asy_callback); 301 if (xfer == NULL) { 302 err = EINVAL; 303 splx(s); 304 break; 305 } 306 err = tsleep((caddr_t)xfer, FWPRI, "fwmrq", 0); 307 splx(s); 308 if (xfer->recv.buf == NULL) 309 err = EIO; 310 else if (xfer->resp != 0) 311 err = xfer->resp; 312 else if (err == 0) 313 err = uiomove(xfer->recv.buf + 4*3, 4, uio); 314 } else { 315 if (len > MAXLEN) 316 len = MAXLEN; 317 s = splfw(); 318 xfer = fwmem_read_block(fwdev, NULL, fwmem_speed, 319 dst_hi, dst_lo, len, fw_asy_callback); 320 if (xfer == NULL) { 321 err = EINVAL; 322 splx(s); 323 break; 324 } 325 err = tsleep((caddr_t)xfer, FWPRI, "fwmrb", 0); 326 splx(s); 327 if (xfer->recv.buf == NULL) 328 err = EIO; 329 else if (xfer->resp != 0) 330 err = xfer->resp; 331 else if (err == 0) 332 err = uiomove(xfer->recv.buf + 4*4, len, uio); 333 } 334 fw_xfer_free(xfer); 335 } 336 return err; 337} 338int 339fwmem_write (dev_t dev, struct uio *uio, int ioflag) 340{ 341 struct firewire_softc *sc; 342 struct fw_device *fwdev; 343 struct fw_xfer *xfer; 344 int err = 0; 345 int unit = DEV2UNIT(dev); 346 u_int16_t dst_hi; 347 u_int32_t dst_lo, quad; 348 char *data; 349 off_t offset; 350 int len, s; 351 352 sc = devclass_get_softc(firewire_devclass, unit); 353 fwdev = fw_noderesolve_eui64(sc->fc, (struct fw_eui64 *)dev->si_drv1); 354 if (fwdev == NULL) { 355 if (fwmem_debug) 356 printf("fwmem: no such device ID:%08x%08x\n", 357 fwmem_eui64.hi, fwmem_eui64.lo); 358 return EINVAL; 359 } 360 361 data = malloc(MAXLEN, M_FW, M_WAITOK); 362 if (data == NULL) 363 return ENOMEM; 364 365 while(uio->uio_resid > 0 && !err) { 366 offset = uio->uio_offset; 367 dst_hi = (offset >> 32) & 0xffff; 368 dst_lo = offset & 0xffffffff; 369 len = uio->uio_resid; 370 if (len == 4 && (dst_lo & 3) == 0) { 371 err = uiomove((char *)&quad, sizeof(quad), uio); 372 s = splfw(); 373 xfer = fwmem_write_quad(fwdev, NULL, fwmem_speed, 374 dst_hi, dst_lo, quad, fw_asy_callback); 375 if (xfer == NULL) { 376 err = EINVAL; 377 splx(s); 378 break; 379 } 380 err = tsleep((caddr_t)xfer, FWPRI, "fwmwq", 0); 381 splx(s); 382 if (xfer->resp != 0) 383 err = xfer->resp; 384 } else { 385 if (len > MAXLEN) 386 len = MAXLEN; 387 err = uiomove(data, len, uio); 388 if (err) 389 break; 390 s = splfw(); 391 xfer = fwmem_write_block(fwdev, NULL, fwmem_speed, 392 dst_hi, dst_lo, len, data, fw_asy_callback); 393 if (xfer == NULL) { 394 err = EINVAL; 395 splx(s); 396 break; 397 } 398 err = tsleep((caddr_t)xfer, FWPRI, "fwmwb", 0); 399 splx(s); 400 if (xfer->resp != 0) 401 err = xfer->resp; 402 } 403 fw_xfer_free(xfer); 404 } 405 free(data, M_FW); 406 return err; 407} 408 409int 410fwmem_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 411{ 412 int err = 0; 413 switch (cmd) { 414 case FW_SDEUI64: 415 bcopy(data, dev->si_drv1, sizeof(struct fw_eui64)); 416 break; 417 case FW_GDEUI64: 418 bcopy(dev->si_drv1, data, sizeof(struct fw_eui64)); 419 break; 420 default: 421 err = EINVAL; 422 } 423 return(err); 424} 425int 426fwmem_poll (dev_t dev, int events, fw_proc *td) 427{ 428 return EINVAL; 429} 430int 431#if __FreeBSD_version < 500102 432fwmem_mmap (dev_t dev, vm_offset_t offset, int nproto) 433#else 434fwmem_mmap (dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nproto) 435#endif 436{ 437 return EINVAL; 438} 439