| 1 | /* $NetBSD: firewire.c,v 1.47 2016/11/20 22:47:39 riastradh Exp $ */ |
| 2 | /*- |
| 3 | * Copyright (c) 2003 Hidetoshi Shimokawa |
| 4 | * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. All advertising materials mentioning features or use of this software |
| 16 | * must display the acknowledgement as bellow: |
| 17 | * |
| 18 | * This product includes software developed by K. Kobayashi and H. Shimokawa |
| 19 | * |
| 20 | * 4. The name of the author may not be used to endorse or promote products |
| 21 | * derived from this software without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 24 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 25 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 26 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
| 27 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 28 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 29 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 31 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| 32 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 33 | * POSSIBILITY OF SUCH DAMAGE. |
| 34 | * |
| 35 | * $FreeBSD: src/sys/dev/firewire/firewire.c,v 1.110 2009/04/07 02:33:46 sbruno Exp $ |
| 36 | * |
| 37 | */ |
| 38 | |
| 39 | #include <sys/cdefs.h> |
| 40 | __KERNEL_RCSID(0, "$NetBSD: firewire.c,v 1.47 2016/11/20 22:47:39 riastradh Exp $" ); |
| 41 | |
| 42 | #include <sys/param.h> |
| 43 | #include <sys/bus.h> |
| 44 | #include <sys/callout.h> |
| 45 | #include <sys/condvar.h> |
| 46 | #include <sys/conf.h> |
| 47 | #include <sys/device.h> |
| 48 | #include <sys/errno.h> |
| 49 | #include <sys/kernel.h> |
| 50 | #include <sys/kthread.h> |
| 51 | #include <sys/malloc.h> |
| 52 | #include <sys/queue.h> |
| 53 | #include <sys/sysctl.h> |
| 54 | #include <sys/systm.h> |
| 55 | |
| 56 | #include <dev/ieee1394/firewire.h> |
| 57 | #include <dev/ieee1394/firewirereg.h> |
| 58 | #include <dev/ieee1394/fwmem.h> |
| 59 | #include <dev/ieee1394/iec13213.h> |
| 60 | #include <dev/ieee1394/iec68113.h> |
| 61 | |
| 62 | #include "locators.h" |
| 63 | |
| 64 | struct crom_src_buf { |
| 65 | struct crom_src src; |
| 66 | struct crom_chunk root; |
| 67 | struct crom_chunk vendor; |
| 68 | struct crom_chunk hw; |
| 69 | }; |
| 70 | |
| 71 | int firewire_debug = 0, try_bmr = 1, hold_count = 0; |
| 72 | /* |
| 73 | * Setup sysctl(3) MIB, hw.ieee1394if.* |
| 74 | * |
| 75 | * TBD condition CTLFLAG_PERMANENT on being a module or not |
| 76 | */ |
| 77 | SYSCTL_SETUP(sysctl_ieee1394if, "sysctl ieee1394if(4) subtree setup" ) |
| 78 | { |
| 79 | int rc, ieee1394if_node_num; |
| 80 | const struct sysctlnode *node; |
| 81 | |
| 82 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
| 83 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee1394if" , |
| 84 | SYSCTL_DESCR("ieee1394if controls" ), |
| 85 | NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { |
| 86 | goto err; |
| 87 | } |
| 88 | ieee1394if_node_num = node->sysctl_num; |
| 89 | |
| 90 | /* ieee1394if try bus manager flag */ |
| 91 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
| 92 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, |
| 93 | "try_bmr" , SYSCTL_DESCR("Try to be a bus manager" ), |
| 94 | NULL, 0, &try_bmr, |
| 95 | 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
| 96 | goto err; |
| 97 | } |
| 98 | |
| 99 | /* ieee1394if hold count */ |
| 100 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
| 101 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, |
| 102 | "hold_count" , SYSCTL_DESCR("Number of count of " |
| 103 | "bus resets for removing lost device information" ), |
| 104 | NULL, 0, &hold_count, |
| 105 | 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
| 106 | goto err; |
| 107 | } |
| 108 | |
| 109 | /* ieee1394if driver debug flag */ |
| 110 | if ((rc = sysctl_createv(clog, 0, NULL, &node, |
| 111 | CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, |
| 112 | "ieee1394_debug" , SYSCTL_DESCR("ieee1394if driver debug flag" ), |
| 113 | NULL, 0, &firewire_debug, |
| 114 | 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) { |
| 115 | goto err; |
| 116 | } |
| 117 | |
| 118 | return; |
| 119 | |
| 120 | err: |
| 121 | aprint_error("%s: sysctl_createv failed (rc = %d)\n" , __func__, rc); |
| 122 | } |
| 123 | |
| 124 | MALLOC_DEFINE(M_FW, "ieee1394" , "IEEE1394" ); |
| 125 | |
| 126 | #define FW_MAXASYRTY 4 |
| 127 | |
| 128 | #define FW_GENERATION_CHANGEABLE 2 |
| 129 | |
| 130 | static int firewirematch (device_t, cfdata_t, void *); |
| 131 | static void firewireattach (device_t, device_t, void *); |
| 132 | static int firewiredetach (device_t, int); |
| 133 | static int firewire_print (void *, const char *); |
| 134 | |
| 135 | int firewire_resume (struct firewire_comm *); |
| 136 | |
| 137 | static void fw_asystart(struct fw_xfer *); |
| 138 | static void firewire_xfer_timeout(struct firewire_comm *); |
| 139 | static void firewire_watchdog(void *); |
| 140 | static void fw_xferq_drain(struct fw_xferq *); |
| 141 | static void fw_reset_csr(struct firewire_comm *); |
| 142 | static void fw_init_crom(struct firewire_comm *); |
| 143 | static void fw_reset_crom(struct firewire_comm *); |
| 144 | static void fw_dump_hdr(struct fw_pkt *, const char *); |
| 145 | static void fw_tl_free(struct firewire_comm *, struct fw_xfer *); |
| 146 | static struct fw_xfer *fw_tl2xfer(struct firewire_comm *, int, int, int); |
| 147 | static void fw_phy_config(struct firewire_comm *, int, int); |
| 148 | static void fw_print_sid(uint32_t); |
| 149 | static void fw_bus_probe(struct firewire_comm *); |
| 150 | static int fw_explore_read_quads(struct fw_device *, int, uint32_t *, int); |
| 151 | static int fw_explore_csrblock(struct fw_device *, int, int); |
| 152 | static int fw_explore_node(struct fw_device *); |
| 153 | static union fw_self_id *fw_find_self_id(struct firewire_comm *, int); |
| 154 | static void fw_explore(struct firewire_comm *); |
| 155 | static void fw_bus_probe_thread(void *); |
| 156 | static void fw_attach_dev(struct firewire_comm *); |
| 157 | static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *); |
| 158 | static void fw_rcv_copy(struct fw_rcv_buf *); |
| 159 | static void fw_try_bmr_callback(struct fw_xfer *); |
| 160 | static void fw_try_bmr(void *); |
| 161 | static int fw_bmr(struct firewire_comm *); |
| 162 | |
| 163 | |
| 164 | CFATTACH_DECL_NEW(ieee1394if, sizeof(struct firewire_softc), |
| 165 | firewirematch, firewireattach, firewiredetach, NULL); |
| 166 | |
| 167 | |
| 168 | const char *fw_linkspeed[] = { |
| 169 | "S100" , "S200" , "S400" , "S800" , |
| 170 | "S1600" , "S3200" , "undef" , "undef" |
| 171 | }; |
| 172 | |
| 173 | static const char *tcode_str[] = { |
| 174 | "WREQQ" , "WREQB" , "WRES" , "undef" , |
| 175 | "RREQQ" , "RREQB" , "RRESQ" , "RRESB" , |
| 176 | "CYCS" , "LREQ" , "STREAM" , "LRES" , |
| 177 | "undef" , "undef" , "PHY" , "undef" |
| 178 | }; |
| 179 | |
| 180 | /* IEEE-1394a Table C-2 Gap count as a function of hops*/ |
| 181 | #define MAX_GAPHOP 15 |
| 182 | u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18, |
| 183 | 21, 24, 26, 29, 32, 35, 37, 40}; |
| 184 | |
| 185 | |
| 186 | static int |
| 187 | firewirematch(device_t parent, cfdata_t cf, void *aux) |
| 188 | { |
| 189 | |
| 190 | return 1; /* always match */ |
| 191 | } |
| 192 | |
| 193 | static void |
| 194 | firewireattach(device_t parent, device_t self, void *aux) |
| 195 | { |
| 196 | struct firewire_softc *sc = device_private(self); |
| 197 | struct firewire_comm *fc = device_private(parent); |
| 198 | struct fw_attach_args faa; |
| 199 | struct firewire_dev_list *devlist; |
| 200 | |
| 201 | aprint_naive("\n" ); |
| 202 | aprint_normal(": IEEE1394 bus\n" ); |
| 203 | |
| 204 | fc->bdev = sc->dev = self; |
| 205 | sc->fc = fc; |
| 206 | SLIST_INIT(&sc->devlist); |
| 207 | |
| 208 | fc->status = FWBUSNOTREADY; |
| 209 | |
| 210 | if (fc->nisodma > FWMAXNDMA) |
| 211 | fc->nisodma = FWMAXNDMA; |
| 212 | |
| 213 | fc->crom_src_buf = |
| 214 | (struct crom_src_buf *)malloc(sizeof(struct crom_src_buf), |
| 215 | M_FW, M_NOWAIT | M_ZERO); |
| 216 | if (fc->crom_src_buf == NULL) { |
| 217 | aprint_error_dev(fc->bdev, "Malloc Failure crom src buff\n" ); |
| 218 | return; |
| 219 | } |
| 220 | fc->topology_map = |
| 221 | (struct fw_topology_map *)malloc(sizeof(struct fw_topology_map), |
| 222 | M_FW, M_NOWAIT | M_ZERO); |
| 223 | if (fc->topology_map == NULL) { |
| 224 | aprint_error_dev(fc->dev, "Malloc Failure topology map\n" ); |
| 225 | free(fc->crom_src_buf, M_FW); |
| 226 | return; |
| 227 | } |
| 228 | fc->speed_map = |
| 229 | (struct fw_speed_map *)malloc(sizeof(struct fw_speed_map), |
| 230 | M_FW, M_NOWAIT | M_ZERO); |
| 231 | if (fc->speed_map == NULL) { |
| 232 | aprint_error_dev(fc->dev, "Malloc Failure speed map\n" ); |
| 233 | free(fc->crom_src_buf, M_FW); |
| 234 | free(fc->topology_map, M_FW); |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | mutex_init(&fc->tlabel_lock, MUTEX_DEFAULT, IPL_VM); |
| 239 | mutex_init(&fc->fc_mtx, MUTEX_DEFAULT, IPL_VM); |
| 240 | mutex_init(&fc->wait_lock, MUTEX_DEFAULT, IPL_VM); |
| 241 | cv_init(&fc->fc_cv, "ieee1394" ); |
| 242 | |
| 243 | callout_init(&fc->timeout_callout, CALLOUT_MPSAFE); |
| 244 | callout_setfunc(&fc->timeout_callout, firewire_watchdog, fc); |
| 245 | callout_init(&fc->bmr_callout, CALLOUT_MPSAFE); |
| 246 | callout_setfunc(&fc->bmr_callout, fw_try_bmr, fc); |
| 247 | callout_init(&fc->busprobe_callout, CALLOUT_MPSAFE); |
| 248 | callout_setfunc(&fc->busprobe_callout, (void *)fw_bus_probe, fc); |
| 249 | |
| 250 | callout_schedule(&fc->timeout_callout, hz); |
| 251 | |
| 252 | /* Tell config we will have started a thread to scan the bus. */ |
| 253 | config_pending_incr(self); |
| 254 | |
| 255 | /* create thread */ |
| 256 | if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, fw_bus_probe_thread, |
| 257 | fc, &fc->probe_thread, "fw%dprobe" , device_unit(fc->bdev))) { |
| 258 | aprint_error_dev(self, "kthread_create failed\n" ); |
| 259 | config_pending_decr(self); |
| 260 | } |
| 261 | |
| 262 | devlist = malloc(sizeof(struct firewire_dev_list), M_DEVBUF, M_NOWAIT); |
| 263 | if (devlist == NULL) { |
| 264 | aprint_error_dev(self, "device list allocation failed\n" ); |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | faa.name = "fwip" ; |
| 269 | faa.fc = fc; |
| 270 | faa.fwdev = NULL; |
| 271 | devlist->dev = config_found(sc->dev, &faa, firewire_print); |
| 272 | if (devlist->dev == NULL) |
| 273 | free(devlist, M_DEVBUF); |
| 274 | else |
| 275 | SLIST_INSERT_HEAD(&sc->devlist, devlist, link); |
| 276 | |
| 277 | /* bus_reset */ |
| 278 | fw_busreset(fc, FWBUSNOTREADY); |
| 279 | fc->ibr(fc); |
| 280 | |
| 281 | if (!pmf_device_register(self, NULL, NULL)) |
| 282 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 283 | |
| 284 | return; |
| 285 | } |
| 286 | |
| 287 | static int |
| 288 | firewiredetach(device_t self, int flags) |
| 289 | { |
| 290 | struct firewire_softc *sc = device_private(self); |
| 291 | struct firewire_comm *fc; |
| 292 | struct fw_device *fwdev, *fwdev_next; |
| 293 | struct firewire_dev_list *devlist; |
| 294 | int err; |
| 295 | |
| 296 | fc = sc->fc; |
| 297 | mutex_enter(&fc->wait_lock); |
| 298 | fc->status = FWBUSDETACH; |
| 299 | cv_signal(&fc->fc_cv); |
| 300 | while (fc->status != FWBUSDETACHOK) { |
| 301 | err = cv_timedwait_sig(&fc->fc_cv, &fc->wait_lock, hz * 60); |
| 302 | if (err == EWOULDBLOCK) { |
| 303 | aprint_error_dev(self, |
| 304 | "firewire probe thread didn't die\n" ); |
| 305 | break; |
| 306 | } |
| 307 | } |
| 308 | mutex_exit(&fc->wait_lock); |
| 309 | |
| 310 | |
| 311 | while ((devlist = SLIST_FIRST(&sc->devlist)) != NULL) { |
| 312 | if ((err = config_detach(devlist->dev, flags)) != 0) |
| 313 | return err; |
| 314 | SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list, link); |
| 315 | free(devlist, M_DEVBUF); |
| 316 | } |
| 317 | |
| 318 | callout_stop(&fc->timeout_callout); |
| 319 | callout_stop(&fc->bmr_callout); |
| 320 | callout_stop(&fc->busprobe_callout); |
| 321 | |
| 322 | /* XXX xfer_free and untimeout on all xfers */ |
| 323 | for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; |
| 324 | fwdev = fwdev_next) { |
| 325 | fwdev_next = STAILQ_NEXT(fwdev, link); |
| 326 | free(fwdev, M_FW); |
| 327 | } |
| 328 | free(fc->topology_map, M_FW); |
| 329 | free(fc->speed_map, M_FW); |
| 330 | free(fc->crom_src_buf, M_FW); |
| 331 | |
| 332 | cv_destroy(&fc->fc_cv); |
| 333 | mutex_destroy(&fc->wait_lock); |
| 334 | mutex_destroy(&fc->fc_mtx); |
| 335 | mutex_destroy(&fc->tlabel_lock); |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | static int |
| 340 | firewire_print(void *aux, const char *pnp) |
| 341 | { |
| 342 | struct fw_attach_args *fwa = (struct fw_attach_args *)aux; |
| 343 | |
| 344 | if (pnp) |
| 345 | aprint_normal("%s at %s" , fwa->name, pnp); |
| 346 | |
| 347 | return UNCONF; |
| 348 | } |
| 349 | |
| 350 | int |
| 351 | firewire_resume(struct firewire_comm *fc) |
| 352 | { |
| 353 | |
| 354 | fc->status = FWBUSNOTREADY; |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | |
| 359 | /* |
| 360 | * Lookup fwdev by node id. |
| 361 | */ |
| 362 | struct fw_device * |
| 363 | fw_noderesolve_nodeid(struct firewire_comm *fc, int dst) |
| 364 | { |
| 365 | struct fw_device *fwdev; |
| 366 | |
| 367 | mutex_enter(&fc->fc_mtx); |
| 368 | STAILQ_FOREACH(fwdev, &fc->devices, link) |
| 369 | if (fwdev->dst == dst && fwdev->status != FWDEVINVAL) |
| 370 | break; |
| 371 | mutex_exit(&fc->fc_mtx); |
| 372 | |
| 373 | return fwdev; |
| 374 | } |
| 375 | |
| 376 | /* |
| 377 | * Lookup fwdev by EUI64. |
| 378 | */ |
| 379 | struct fw_device * |
| 380 | fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui) |
| 381 | { |
| 382 | struct fw_device *fwdev; |
| 383 | |
| 384 | mutex_enter(&fc->fc_mtx); |
| 385 | STAILQ_FOREACH(fwdev, &fc->devices, link) |
| 386 | if (FW_EUI64_EQUAL(fwdev->eui, *eui)) |
| 387 | break; |
| 388 | mutex_exit(&fc->fc_mtx); |
| 389 | |
| 390 | if (fwdev == NULL) |
| 391 | return NULL; |
| 392 | if (fwdev->status == FWDEVINVAL) |
| 393 | return NULL; |
| 394 | return fwdev; |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * Async. request procedure for userland application. |
| 399 | */ |
| 400 | int |
| 401 | fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer) |
| 402 | { |
| 403 | struct fw_xferq *xferq; |
| 404 | int len; |
| 405 | struct fw_pkt *fp; |
| 406 | int tcode; |
| 407 | const struct tcode_info *info; |
| 408 | |
| 409 | if (xfer == NULL) |
| 410 | return EINVAL; |
| 411 | if (xfer->hand == NULL) { |
| 412 | aprint_error_dev(fc->bdev, "hand == NULL\n" ); |
| 413 | return EINVAL; |
| 414 | } |
| 415 | fp = &xfer->send.hdr; |
| 416 | |
| 417 | tcode = fp->mode.common.tcode & 0xf; |
| 418 | info = &fc->tcode[tcode]; |
| 419 | if (info->flag == 0) { |
| 420 | aprint_error_dev(fc->bdev, "invalid tcode=%x\n" , tcode); |
| 421 | return EINVAL; |
| 422 | } |
| 423 | |
| 424 | /* XXX allow bus explore packets only after bus rest */ |
| 425 | if ((fc->status < FWBUSEXPLORE) && |
| 426 | ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) || |
| 427 | (fp->mode.rreqq.dest_lo < 0xf0000000) || |
| 428 | (fp->mode.rreqq.dest_lo >= 0xf0001000))) { |
| 429 | xfer->resp = EAGAIN; |
| 430 | xfer->flag = FWXF_BUSY; |
| 431 | return EAGAIN; |
| 432 | } |
| 433 | |
| 434 | if (info->flag & FWTI_REQ) |
| 435 | xferq = fc->atq; |
| 436 | else |
| 437 | xferq = fc->ats; |
| 438 | len = info->hdr_len; |
| 439 | if (xfer->send.pay_len > MAXREC(fc->maxrec)) { |
| 440 | aprint_error_dev(fc->bdev, "send.pay_len > maxrec\n" ); |
| 441 | return EINVAL; |
| 442 | } |
| 443 | if (info->flag & FWTI_BLOCK_STR) |
| 444 | len = fp->mode.stream.len; |
| 445 | else if (info->flag & FWTI_BLOCK_ASY) |
| 446 | len = fp->mode.rresb.len; |
| 447 | else |
| 448 | len = 0; |
| 449 | if (len != xfer->send.pay_len) { |
| 450 | aprint_error_dev(fc->bdev, |
| 451 | "len(%d) != send.pay_len(%d) %s(%x)\n" , |
| 452 | len, xfer->send.pay_len, tcode_str[tcode], tcode); |
| 453 | return EINVAL; |
| 454 | } |
| 455 | |
| 456 | if (xferq->start == NULL) { |
| 457 | aprint_error_dev(fc->bdev, "xferq->start == NULL\n" ); |
| 458 | return EINVAL; |
| 459 | } |
| 460 | if (!(xferq->queued < xferq->maxq)) { |
| 461 | aprint_error_dev(fc->bdev, "Discard a packet (queued=%d)\n" , |
| 462 | xferq->queued); |
| 463 | return EAGAIN; |
| 464 | } |
| 465 | |
| 466 | xfer->tl = -1; |
| 467 | if (info->flag & FWTI_TLABEL) |
| 468 | if (fw_get_tlabel(fc, xfer) < 0) |
| 469 | return EAGAIN; |
| 470 | |
| 471 | xfer->resp = 0; |
| 472 | xfer->fc = fc; |
| 473 | xfer->q = xferq; |
| 474 | |
| 475 | fw_asystart(xfer); |
| 476 | return 0; |
| 477 | } |
| 478 | |
| 479 | /* |
| 480 | * Wakeup blocked process. |
| 481 | */ |
| 482 | void |
| 483 | fw_xferwake(struct fw_xfer *xfer) |
| 484 | { |
| 485 | |
| 486 | mutex_enter(&xfer->fc->wait_lock); |
| 487 | xfer->flag |= FWXF_WAKE; |
| 488 | cv_signal(&xfer->cv); |
| 489 | mutex_exit(&xfer->fc->wait_lock); |
| 490 | |
| 491 | return; |
| 492 | } |
| 493 | |
| 494 | int |
| 495 | fw_xferwait(struct fw_xfer *xfer) |
| 496 | { |
| 497 | struct firewire_comm *fc = xfer->fc; |
| 498 | int err = 0; |
| 499 | |
| 500 | mutex_enter(&fc->wait_lock); |
| 501 | while (!(xfer->flag & FWXF_WAKE)) |
| 502 | err = cv_wait_sig(&xfer->cv, &fc->wait_lock); |
| 503 | mutex_exit(&fc->wait_lock); |
| 504 | |
| 505 | return err; |
| 506 | } |
| 507 | |
| 508 | void |
| 509 | fw_drain_txq(struct firewire_comm *fc) |
| 510 | { |
| 511 | struct fw_xfer *xfer; |
| 512 | STAILQ_HEAD(, fw_xfer) xfer_drain; |
| 513 | int i; |
| 514 | |
| 515 | STAILQ_INIT(&xfer_drain); |
| 516 | |
| 517 | mutex_enter(&fc->atq->q_mtx); |
| 518 | fw_xferq_drain(fc->atq); |
| 519 | mutex_exit(&fc->atq->q_mtx); |
| 520 | mutex_enter(&fc->ats->q_mtx); |
| 521 | fw_xferq_drain(fc->ats); |
| 522 | mutex_exit(&fc->ats->q_mtx); |
| 523 | for (i = 0; i < fc->nisodma; i++) |
| 524 | fw_xferq_drain(fc->it[i]); |
| 525 | |
| 526 | mutex_enter(&fc->tlabel_lock); |
| 527 | for (i = 0; i < 0x40; i++) |
| 528 | while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { |
| 529 | if (firewire_debug) |
| 530 | printf("tl=%d flag=%d\n" , i, xfer->flag); |
| 531 | xfer->resp = EAGAIN; |
| 532 | STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); |
| 533 | STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel); |
| 534 | } |
| 535 | mutex_exit(&fc->tlabel_lock); |
| 536 | |
| 537 | STAILQ_FOREACH(xfer, &xfer_drain, tlabel) |
| 538 | xfer->hand(xfer); |
| 539 | } |
| 540 | |
| 541 | /* |
| 542 | * Called after bus reset. |
| 543 | */ |
| 544 | void |
| 545 | fw_busreset(struct firewire_comm *fc, uint32_t new_status) |
| 546 | { |
| 547 | struct firewire_softc *sc = device_private(fc->bdev); |
| 548 | struct firewire_dev_list *devlist; |
| 549 | struct firewire_dev_comm *fdc; |
| 550 | struct crom_src *src; |
| 551 | uint32_t *newrom; |
| 552 | |
| 553 | if (fc->status == FWBUSMGRELECT) |
| 554 | callout_stop(&fc->bmr_callout); |
| 555 | |
| 556 | fc->status = new_status; |
| 557 | fw_reset_csr(fc); |
| 558 | |
| 559 | if (fc->status == FWBUSNOTREADY) |
| 560 | fw_init_crom(fc); |
| 561 | |
| 562 | fw_reset_crom(fc); |
| 563 | |
| 564 | /* How many safe this access? */ |
| 565 | SLIST_FOREACH(devlist, &sc->devlist, link) { |
| 566 | fdc = device_private(devlist->dev); |
| 567 | if (fdc->post_busreset != NULL) |
| 568 | fdc->post_busreset(fdc); |
| 569 | } |
| 570 | |
| 571 | /* |
| 572 | * If the old config rom needs to be overwritten, |
| 573 | * bump the businfo.generation indicator to |
| 574 | * indicate that we need to be reprobed |
| 575 | * See 1394a-2000 8.3.2.5.4 for more details. |
| 576 | * generation starts at 2 and rolls over at 0xF |
| 577 | * back to 2. |
| 578 | * |
| 579 | * A generation of 0 indicates a device |
| 580 | * that is not 1394a-2000 compliant. |
| 581 | * A generation of 1 indicates a device that |
| 582 | * does not change its Bus Info Block or |
| 583 | * Configuration ROM. |
| 584 | */ |
| 585 | #define FW_MAX_GENERATION 0xF |
| 586 | newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO); |
| 587 | src = &fc->crom_src_buf->src; |
| 588 | crom_load(src, newrom, CROMSIZE); |
| 589 | if (memcmp(newrom, fc->config_rom, CROMSIZE) != 0) { |
| 590 | if (src->businfo.generation++ > FW_MAX_GENERATION) |
| 591 | src->businfo.generation = FW_GENERATION_CHANGEABLE; |
| 592 | memcpy((void *)fc->config_rom, newrom, CROMSIZE); |
| 593 | } |
| 594 | free(newrom, M_FW); |
| 595 | } |
| 596 | |
| 597 | /* Call once after reboot */ |
| 598 | void |
| 599 | fw_init(struct firewire_comm *fc) |
| 600 | { |
| 601 | int i; |
| 602 | |
| 603 | fc->arq->queued = 0; |
| 604 | fc->ars->queued = 0; |
| 605 | fc->atq->queued = 0; |
| 606 | fc->ats->queued = 0; |
| 607 | |
| 608 | fc->arq->buf = NULL; |
| 609 | fc->ars->buf = NULL; |
| 610 | fc->atq->buf = NULL; |
| 611 | fc->ats->buf = NULL; |
| 612 | |
| 613 | fc->arq->flag = 0; |
| 614 | fc->ars->flag = 0; |
| 615 | fc->atq->flag = 0; |
| 616 | fc->ats->flag = 0; |
| 617 | |
| 618 | STAILQ_INIT(&fc->atq->q); |
| 619 | STAILQ_INIT(&fc->ats->q); |
| 620 | mutex_init(&fc->arq->q_mtx, MUTEX_DEFAULT, IPL_VM); |
| 621 | mutex_init(&fc->ars->q_mtx, MUTEX_DEFAULT, IPL_VM); |
| 622 | mutex_init(&fc->atq->q_mtx, MUTEX_DEFAULT, IPL_VM); |
| 623 | mutex_init(&fc->ats->q_mtx, MUTEX_DEFAULT, IPL_VM); |
| 624 | |
| 625 | fc->arq->maxq = FWMAXQUEUE; |
| 626 | fc->ars->maxq = FWMAXQUEUE; |
| 627 | fc->atq->maxq = FWMAXQUEUE; |
| 628 | fc->ats->maxq = FWMAXQUEUE; |
| 629 | |
| 630 | CSRARC(fc, TOPO_MAP) = 0x3f1 << 16; |
| 631 | CSRARC(fc, TOPO_MAP + 4) = 1; |
| 632 | CSRARC(fc, SPED_MAP) = 0x3f1 << 16; |
| 633 | CSRARC(fc, SPED_MAP + 4) = 1; |
| 634 | |
| 635 | STAILQ_INIT(&fc->devices); |
| 636 | |
| 637 | /* Initialize Async handlers */ |
| 638 | STAILQ_INIT(&fc->binds); |
| 639 | for (i = 0; i < 0x40; i++) |
| 640 | STAILQ_INIT(&fc->tlabels[i]); |
| 641 | |
| 642 | /* DV depend CSRs see blue book */ |
| 643 | #if 0 |
| 644 | CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */ |
| 645 | CSRARC(fc, oPCR) = 0x8000007a; |
| 646 | for (i = 4; i < 0x7c/4; i+=4) |
| 647 | CSRARC(fc, i + oPCR) = 0x8000007a; |
| 648 | |
| 649 | CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */ |
| 650 | CSRARC(fc, iPCR) = 0x803f0000; |
| 651 | for (i = 4; i < 0x7c/4; i+=4) |
| 652 | CSRARC(fc, i + iPCR) = 0x0; |
| 653 | #endif |
| 654 | |
| 655 | fc->crom_src_buf = NULL; |
| 656 | } |
| 657 | |
| 658 | /* |
| 659 | * Called by HCI driver when it has determined the number of |
| 660 | * isochronous DMA channels. |
| 661 | */ |
| 662 | void |
| 663 | fw_init_isodma(struct firewire_comm *fc) |
| 664 | { |
| 665 | unsigned i; |
| 666 | |
| 667 | for (i = 0; i < fc->nisodma; i++) { |
| 668 | fc->it[i]->queued = 0; |
| 669 | fc->ir[i]->queued = 0; |
| 670 | |
| 671 | fc->it[i]->start = NULL; |
| 672 | fc->ir[i]->start = NULL; |
| 673 | |
| 674 | fc->it[i]->buf = NULL; |
| 675 | fc->ir[i]->buf = NULL; |
| 676 | |
| 677 | fc->it[i]->flag = FWXFERQ_STREAM; |
| 678 | fc->ir[i]->flag = FWXFERQ_STREAM; |
| 679 | |
| 680 | STAILQ_INIT(&fc->it[i]->q); |
| 681 | STAILQ_INIT(&fc->ir[i]->q); |
| 682 | |
| 683 | fc->ir[i]->maxq = FWMAXQUEUE; |
| 684 | fc->it[i]->maxq = FWMAXQUEUE; |
| 685 | |
| 686 | cv_init(&fc->ir[i]->cv, "fw_read" ); |
| 687 | cv_init(&fc->it[i]->cv, "fw_write" ); |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | void |
| 692 | fw_destroy_isodma(struct firewire_comm *fc) |
| 693 | { |
| 694 | unsigned i; |
| 695 | |
| 696 | for (i = 0; i < fc->nisodma; i++) { |
| 697 | cv_destroy(&fc->ir[i]->cv); |
| 698 | cv_destroy(&fc->it[i]->cv); |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | void |
| 703 | fw_destroy(struct firewire_comm *fc) |
| 704 | { |
| 705 | mutex_destroy(&fc->arq->q_mtx); |
| 706 | mutex_destroy(&fc->ars->q_mtx); |
| 707 | mutex_destroy(&fc->atq->q_mtx); |
| 708 | mutex_destroy(&fc->ats->q_mtx); |
| 709 | } |
| 710 | |
| 711 | #define BIND_CMP(addr, fwb) \ |
| 712 | (((addr) < (fwb)->start) ? -1 : ((fwb)->end < (addr)) ? 1 : 0) |
| 713 | |
| 714 | /* |
| 715 | * To lookup bound process from IEEE1394 address. |
| 716 | */ |
| 717 | struct fw_bind * |
| 718 | fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo) |
| 719 | { |
| 720 | u_int64_t addr; |
| 721 | struct fw_bind *tfw, *r = NULL; |
| 722 | |
| 723 | addr = ((u_int64_t)dest_hi << 32) | dest_lo; |
| 724 | mutex_enter(&fc->fc_mtx); |
| 725 | STAILQ_FOREACH(tfw, &fc->binds, fclist) |
| 726 | if (BIND_CMP(addr, tfw) == 0) { |
| 727 | r = tfw; |
| 728 | break; |
| 729 | } |
| 730 | mutex_exit(&fc->fc_mtx); |
| 731 | return r; |
| 732 | } |
| 733 | |
| 734 | /* |
| 735 | * To bind IEEE1394 address block to process. |
| 736 | */ |
| 737 | int |
| 738 | fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb) |
| 739 | { |
| 740 | struct fw_bind *tfw, *prev = NULL; |
| 741 | int r = 0; |
| 742 | |
| 743 | if (fwb->start > fwb->end) { |
| 744 | aprint_error_dev(fc->bdev, "invalid range\n" ); |
| 745 | return EINVAL; |
| 746 | } |
| 747 | |
| 748 | mutex_enter(&fc->fc_mtx); |
| 749 | STAILQ_FOREACH(tfw, &fc->binds, fclist) { |
| 750 | if (fwb->end < tfw->start) |
| 751 | break; |
| 752 | prev = tfw; |
| 753 | } |
| 754 | if (prev == NULL) |
| 755 | STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist); |
| 756 | else if (prev->end < fwb->start) |
| 757 | STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist); |
| 758 | else { |
| 759 | aprint_error_dev(fc->bdev, "bind failed\n" ); |
| 760 | r = EBUSY; |
| 761 | } |
| 762 | mutex_exit(&fc->fc_mtx); |
| 763 | return r; |
| 764 | } |
| 765 | |
| 766 | /* |
| 767 | * To free IEEE1394 address block. |
| 768 | */ |
| 769 | int |
| 770 | fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb) |
| 771 | { |
| 772 | #if 0 |
| 773 | struct fw_xfer *xfer, *next; |
| 774 | #endif |
| 775 | struct fw_bind *tfw; |
| 776 | |
| 777 | mutex_enter(&fc->fc_mtx); |
| 778 | STAILQ_FOREACH(tfw, &fc->binds, fclist) |
| 779 | if (tfw == fwb) { |
| 780 | STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist); |
| 781 | mutex_exit(&fc->fc_mtx); |
| 782 | goto found; |
| 783 | } |
| 784 | |
| 785 | mutex_exit(&fc->fc_mtx); |
| 786 | aprint_error_dev(fc->bdev, "no such binding\n" ); |
| 787 | return 1; |
| 788 | found: |
| 789 | #if 0 |
| 790 | /* shall we do this? */ |
| 791 | for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) { |
| 792 | next = STAILQ_NEXT(xfer, link); |
| 793 | fw_xfer_free(xfer); |
| 794 | } |
| 795 | STAILQ_INIT(&fwb->xferlist); |
| 796 | #endif |
| 797 | |
| 798 | return 0; |
| 799 | } |
| 800 | |
| 801 | int |
| 802 | fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, int slen, |
| 803 | int rlen, int n, struct firewire_comm *fc, void *sc, |
| 804 | void (*hand)(struct fw_xfer *)) |
| 805 | { |
| 806 | struct fw_xfer *xfer; |
| 807 | int i; |
| 808 | |
| 809 | for (i = 0; i < n; i++) { |
| 810 | xfer = fw_xfer_alloc_buf(type, slen, rlen); |
| 811 | if (xfer == NULL) |
| 812 | return n; |
| 813 | xfer->fc = fc; |
| 814 | xfer->sc = sc; |
| 815 | xfer->hand = hand; |
| 816 | STAILQ_INSERT_TAIL(q, xfer, link); |
| 817 | } |
| 818 | return n; |
| 819 | } |
| 820 | |
| 821 | void |
| 822 | fw_xferlist_remove(struct fw_xferlist *q) |
| 823 | { |
| 824 | struct fw_xfer *xfer, *next; |
| 825 | |
| 826 | for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) { |
| 827 | next = STAILQ_NEXT(xfer, link); |
| 828 | fw_xfer_free_buf(xfer); |
| 829 | } |
| 830 | STAILQ_INIT(q); |
| 831 | } |
| 832 | |
| 833 | /* |
| 834 | * To allocate IEEE1394 XFER structure. |
| 835 | */ |
| 836 | struct fw_xfer * |
| 837 | fw_xfer_alloc(struct malloc_type *type) |
| 838 | { |
| 839 | struct fw_xfer *xfer; |
| 840 | |
| 841 | xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO); |
| 842 | if (xfer == NULL) |
| 843 | return xfer; |
| 844 | |
| 845 | xfer->malloc = type; |
| 846 | cv_init(&xfer->cv, "fwxfer" ); |
| 847 | |
| 848 | return xfer; |
| 849 | } |
| 850 | |
| 851 | struct fw_xfer * |
| 852 | fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len) |
| 853 | { |
| 854 | struct fw_xfer *xfer; |
| 855 | |
| 856 | xfer = fw_xfer_alloc(type); |
| 857 | if (xfer == NULL) |
| 858 | return NULL; |
| 859 | xfer->send.pay_len = send_len; |
| 860 | xfer->recv.pay_len = recv_len; |
| 861 | if (send_len > 0) { |
| 862 | xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO); |
| 863 | if (xfer->send.payload == NULL) { |
| 864 | fw_xfer_free(xfer); |
| 865 | return NULL; |
| 866 | } |
| 867 | } |
| 868 | if (recv_len > 0) { |
| 869 | xfer->recv.payload = malloc(recv_len, type, M_NOWAIT); |
| 870 | if (xfer->recv.payload == NULL) { |
| 871 | if (xfer->send.payload != NULL) |
| 872 | free(xfer->send.payload, type); |
| 873 | fw_xfer_free(xfer); |
| 874 | return NULL; |
| 875 | } |
| 876 | } |
| 877 | return xfer; |
| 878 | } |
| 879 | |
| 880 | /* |
| 881 | * IEEE1394 XFER post process. |
| 882 | */ |
| 883 | void |
| 884 | fw_xfer_done(struct fw_xfer *xfer) |
| 885 | { |
| 886 | |
| 887 | if (xfer->hand == NULL) { |
| 888 | aprint_error_dev(xfer->fc->bdev, "hand == NULL\n" ); |
| 889 | return; |
| 890 | } |
| 891 | |
| 892 | if (xfer->fc == NULL) |
| 893 | panic("fw_xfer_done: why xfer->fc is NULL?" ); |
| 894 | |
| 895 | fw_tl_free(xfer->fc, xfer); |
| 896 | xfer->hand(xfer); |
| 897 | } |
| 898 | |
| 899 | void |
| 900 | fw_xfer_unload(struct fw_xfer* xfer) |
| 901 | { |
| 902 | |
| 903 | if (xfer == NULL) |
| 904 | return; |
| 905 | if (xfer->flag & FWXF_INQ) { |
| 906 | aprint_error_dev(xfer->fc->bdev, "fw_xfer_free FWXF_INQ\n" ); |
| 907 | mutex_enter(&xfer->q->q_mtx); |
| 908 | STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link); |
| 909 | #if 0 |
| 910 | xfer->q->queued--; |
| 911 | #endif |
| 912 | mutex_exit(&xfer->q->q_mtx); |
| 913 | } |
| 914 | if (xfer->fc != NULL) { |
| 915 | #if 1 |
| 916 | if (xfer->flag == FWXF_START) |
| 917 | /* |
| 918 | * This could happen if: |
| 919 | * 1. We call fwohci_arcv() before fwohci_txd(). |
| 920 | * 2. firewire_watch() is called. |
| 921 | */ |
| 922 | aprint_error_dev(xfer->fc->bdev, |
| 923 | "fw_xfer_free FWXF_START\n" ); |
| 924 | #endif |
| 925 | } |
| 926 | xfer->flag = FWXF_INIT; |
| 927 | xfer->resp = 0; |
| 928 | } |
| 929 | |
| 930 | /* |
| 931 | * To free IEEE1394 XFER structure. |
| 932 | */ |
| 933 | void |
| 934 | fw_xfer_free(struct fw_xfer* xfer) |
| 935 | { |
| 936 | |
| 937 | if (xfer == NULL) { |
| 938 | aprint_error("fw_xfer_free: xfer == NULL\n" ); |
| 939 | return; |
| 940 | } |
| 941 | fw_xfer_unload(xfer); |
| 942 | cv_destroy(&xfer->cv); |
| 943 | free(xfer, xfer->malloc); |
| 944 | } |
| 945 | |
| 946 | void |
| 947 | fw_xfer_free_buf(struct fw_xfer* xfer) |
| 948 | { |
| 949 | |
| 950 | if (xfer == NULL) { |
| 951 | aprint_error("fw_xfer_free_buf: xfer == NULL\n" ); |
| 952 | return; |
| 953 | } |
| 954 | fw_xfer_unload(xfer); |
| 955 | if (xfer->send.payload != NULL) { |
| 956 | free(xfer->send.payload, xfer->malloc); |
| 957 | } |
| 958 | if (xfer->recv.payload != NULL) { |
| 959 | free(xfer->recv.payload, xfer->malloc); |
| 960 | } |
| 961 | cv_destroy(&xfer->cv); |
| 962 | free(xfer, xfer->malloc); |
| 963 | } |
| 964 | |
| 965 | void |
| 966 | fw_asy_callback_free(struct fw_xfer *xfer) |
| 967 | { |
| 968 | |
| 969 | #if 0 |
| 970 | printf("asyreq done flag=%d resp=%d\n" , xfer->flag, xfer->resp); |
| 971 | #endif |
| 972 | fw_xfer_free(xfer); |
| 973 | } |
| 974 | |
| 975 | /* |
| 976 | * To receive self ID. |
| 977 | */ |
| 978 | void |
| 979 | fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len) |
| 980 | { |
| 981 | uint32_t *p; |
| 982 | union fw_self_id *self_id; |
| 983 | u_int i, j, node, c_port = 0, i_branch = 0; |
| 984 | |
| 985 | fc->sid_cnt = len / (sizeof(uint32_t) * 2); |
| 986 | fc->max_node = fc->nodeid & 0x3f; |
| 987 | CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16; |
| 988 | fc->status = FWBUSCYMELECT; |
| 989 | fc->topology_map->crc_len = 2; |
| 990 | fc->topology_map->generation++; |
| 991 | fc->topology_map->self_id_count = 0; |
| 992 | fc->topology_map->node_count = 0; |
| 993 | fc->speed_map->generation++; |
| 994 | fc->speed_map->crc_len = 1 + (64*64 + 3) / 4; |
| 995 | self_id = fc->topology_map->self_id; |
| 996 | for (i = 0; i < fc->sid_cnt; i++) { |
| 997 | if (sid[1] != ~sid[0]) { |
| 998 | aprint_error_dev(fc->bdev, |
| 999 | "ERROR invalid self-id packet\n" ); |
| 1000 | sid += 2; |
| 1001 | continue; |
| 1002 | } |
| 1003 | *self_id = *((union fw_self_id *)sid); |
| 1004 | fc->topology_map->crc_len++; |
| 1005 | if (self_id->p0.sequel == 0) { |
| 1006 | fc->topology_map->node_count++; |
| 1007 | c_port = 0; |
| 1008 | if (firewire_debug) |
| 1009 | fw_print_sid(sid[0]); |
| 1010 | node = self_id->p0.phy_id; |
| 1011 | if (fc->max_node < node) |
| 1012 | fc->max_node = self_id->p0.phy_id; |
| 1013 | /* XXX I'm not sure this is the right speed_map */ |
| 1014 | fc->speed_map->speed[node][node] = |
| 1015 | self_id->p0.phy_speed; |
| 1016 | for (j = 0; j < node; j++) |
| 1017 | fc->speed_map->speed[j][node] = |
| 1018 | fc->speed_map->speed[node][j] = |
| 1019 | min(fc->speed_map->speed[j][j], |
| 1020 | self_id->p0.phy_speed); |
| 1021 | if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) && |
| 1022 | (self_id->p0.link_active && self_id->p0.contender)) |
| 1023 | fc->irm = self_id->p0.phy_id; |
| 1024 | if (self_id->p0.port0 >= 0x2) |
| 1025 | c_port++; |
| 1026 | if (self_id->p0.port1 >= 0x2) |
| 1027 | c_port++; |
| 1028 | if (self_id->p0.port2 >= 0x2) |
| 1029 | c_port++; |
| 1030 | } |
| 1031 | if (c_port > 2) |
| 1032 | i_branch += (c_port - 2); |
| 1033 | sid += 2; |
| 1034 | self_id++; |
| 1035 | fc->topology_map->self_id_count++; |
| 1036 | } |
| 1037 | /* CRC */ |
| 1038 | fc->topology_map->crc = |
| 1039 | fw_crc16((uint32_t *)&fc->topology_map->generation, |
| 1040 | fc->topology_map->crc_len * 4); |
| 1041 | fc->speed_map->crc = fw_crc16((uint32_t *)&fc->speed_map->generation, |
| 1042 | fc->speed_map->crc_len * 4); |
| 1043 | /* byteswap and copy to CSR */ |
| 1044 | p = (uint32_t *)fc->topology_map; |
| 1045 | for (i = 0; i <= fc->topology_map->crc_len; i++) |
| 1046 | CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++); |
| 1047 | p = (uint32_t *)fc->speed_map; |
| 1048 | CSRARC(fc, SPED_MAP) = htonl(*p++); |
| 1049 | CSRARC(fc, SPED_MAP + 4) = htonl(*p++); |
| 1050 | /* don't byte-swap uint8_t array */ |
| 1051 | memcpy(&CSRARC(fc, SPED_MAP + 8), p, (fc->speed_map->crc_len - 1) * 4); |
| 1052 | |
| 1053 | fc->max_hop = fc->max_node - i_branch; |
| 1054 | aprint_normal_dev(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d)%s\n" , |
| 1055 | fc->max_node + 1, fc->max_hop, |
| 1056 | (fc->irm == -1) ? "Not IRM capable" : "cable IRM" , |
| 1057 | fc->irm, |
| 1058 | (fc->irm == fc->nodeid) ? " (me)" : "" ); |
| 1059 | |
| 1060 | if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) { |
| 1061 | if (fc->irm == fc->nodeid) { |
| 1062 | fc->status = FWBUSMGRDONE; |
| 1063 | CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm); |
| 1064 | fw_bmr(fc); |
| 1065 | } else { |
| 1066 | fc->status = FWBUSMGRELECT; |
| 1067 | callout_schedule(&fc->bmr_callout, hz/8); |
| 1068 | } |
| 1069 | } else |
| 1070 | fc->status = FWBUSMGRDONE; |
| 1071 | |
| 1072 | callout_schedule(&fc->busprobe_callout, hz/4); |
| 1073 | } |
| 1074 | |
| 1075 | /* |
| 1076 | * Generic packet receiving process. |
| 1077 | */ |
| 1078 | void |
| 1079 | fw_rcv(struct fw_rcv_buf *rb) |
| 1080 | { |
| 1081 | struct fw_pkt *fp, *resfp; |
| 1082 | struct fw_bind *bind; |
| 1083 | int tcode; |
| 1084 | int i, len, oldstate; |
| 1085 | #if 0 |
| 1086 | { |
| 1087 | uint32_t *qld; |
| 1088 | int i; |
| 1089 | qld = (uint32_t *)buf; |
| 1090 | printf("spd %d len:%d\n" , spd, len); |
| 1091 | for (i = 0; i <= len && i < 32; i+= 4) { |
| 1092 | printf("0x%08x " , ntohl(qld[i/4])); |
| 1093 | if ((i % 16) == 15) printf("\n" ); |
| 1094 | } |
| 1095 | if ((i % 16) != 15) printf("\n" ); |
| 1096 | } |
| 1097 | #endif |
| 1098 | fp = (struct fw_pkt *)rb->vec[0].iov_base; |
| 1099 | tcode = fp->mode.common.tcode; |
| 1100 | switch (tcode) { |
| 1101 | case FWTCODE_WRES: |
| 1102 | case FWTCODE_RRESQ: |
| 1103 | case FWTCODE_RRESB: |
| 1104 | case FWTCODE_LRES: |
| 1105 | rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, |
| 1106 | fp->mode.hdr.tlrt >> 2, tcode); |
| 1107 | if (rb->xfer == NULL) { |
| 1108 | aprint_error_dev(rb->fc->bdev, "unknown response" |
| 1109 | " %s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n" , |
| 1110 | tcode_str[tcode], tcode, |
| 1111 | fp->mode.hdr.src, |
| 1112 | fp->mode.hdr.tlrt >> 2, |
| 1113 | fp->mode.hdr.tlrt & 3, |
| 1114 | fp->mode.rresq.data); |
| 1115 | #if 0 |
| 1116 | printf("try ad-hoc work around!!\n" ); |
| 1117 | rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src, |
| 1118 | (fp->mode.hdr.tlrt >> 2) ^ 3); |
| 1119 | if (rb->xfer == NULL) { |
| 1120 | printf("no use...\n" ); |
| 1121 | return; |
| 1122 | } |
| 1123 | #else |
| 1124 | return; |
| 1125 | #endif |
| 1126 | } |
| 1127 | fw_rcv_copy(rb); |
| 1128 | if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP) |
| 1129 | rb->xfer->resp = EIO; |
| 1130 | else |
| 1131 | rb->xfer->resp = 0; |
| 1132 | /* make sure the packet is drained in AT queue */ |
| 1133 | oldstate = rb->xfer->flag; |
| 1134 | rb->xfer->flag = FWXF_RCVD; |
| 1135 | switch (oldstate) { |
| 1136 | case FWXF_SENT: |
| 1137 | fw_xfer_done(rb->xfer); |
| 1138 | break; |
| 1139 | case FWXF_START: |
| 1140 | #if 0 |
| 1141 | if (firewire_debug) |
| 1142 | printf("not sent yet tl=%x\n" , rb->xfer->tl); |
| 1143 | #endif |
| 1144 | break; |
| 1145 | default: |
| 1146 | aprint_error_dev(rb->fc->bdev, |
| 1147 | "unexpected flag 0x%02x\n" , rb->xfer->flag); |
| 1148 | } |
| 1149 | return; |
| 1150 | case FWTCODE_WREQQ: |
| 1151 | case FWTCODE_WREQB: |
| 1152 | case FWTCODE_RREQQ: |
| 1153 | case FWTCODE_RREQB: |
| 1154 | case FWTCODE_LREQ: |
| 1155 | bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi, |
| 1156 | fp->mode.rreqq.dest_lo); |
| 1157 | if (bind == NULL) { |
| 1158 | #if 1 |
| 1159 | aprint_error_dev(rb->fc->bdev, "Unknown service addr" |
| 1160 | " 0x%04x:0x%08x %s(%x) src=0x%x data=%x\n" , |
| 1161 | fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo, |
| 1162 | tcode_str[tcode], tcode, |
| 1163 | fp->mode.hdr.src, ntohl(fp->mode.wreqq.data)); |
| 1164 | #endif |
| 1165 | if (rb->fc->status == FWBUSINIT) { |
| 1166 | aprint_error_dev(rb->fc->bdev, |
| 1167 | "cannot respond(bus reset)!\n" ); |
| 1168 | return; |
| 1169 | } |
| 1170 | rb->xfer = fw_xfer_alloc(M_FW); |
| 1171 | if (rb->xfer == NULL) |
| 1172 | return; |
| 1173 | rb->xfer->send.spd = rb->spd; |
| 1174 | rb->xfer->send.pay_len = 0; |
| 1175 | resfp = &rb->xfer->send.hdr; |
| 1176 | switch (tcode) { |
| 1177 | case FWTCODE_WREQQ: |
| 1178 | case FWTCODE_WREQB: |
| 1179 | resfp->mode.hdr.tcode = FWTCODE_WRES; |
| 1180 | break; |
| 1181 | case FWTCODE_RREQQ: |
| 1182 | resfp->mode.hdr.tcode = FWTCODE_RRESQ; |
| 1183 | break; |
| 1184 | case FWTCODE_RREQB: |
| 1185 | resfp->mode.hdr.tcode = FWTCODE_RRESB; |
| 1186 | break; |
| 1187 | case FWTCODE_LREQ: |
| 1188 | resfp->mode.hdr.tcode = FWTCODE_LRES; |
| 1189 | break; |
| 1190 | } |
| 1191 | resfp->mode.hdr.dst = fp->mode.hdr.src; |
| 1192 | resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt; |
| 1193 | resfp->mode.hdr.pri = fp->mode.hdr.pri; |
| 1194 | resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR; |
| 1195 | resfp->mode.rresb.extcode = 0; |
| 1196 | resfp->mode.rresb.len = 0; |
| 1197 | /* |
| 1198 | rb->xfer->hand = fw_xferwake; |
| 1199 | */ |
| 1200 | rb->xfer->hand = fw_xfer_free; |
| 1201 | if (fw_asyreq(rb->fc, -1, rb->xfer)) { |
| 1202 | fw_xfer_free(rb->xfer); |
| 1203 | return; |
| 1204 | } |
| 1205 | return; |
| 1206 | } |
| 1207 | len = 0; |
| 1208 | for (i = 0; i < rb->nvec; i++) |
| 1209 | len += rb->vec[i].iov_len; |
| 1210 | mutex_enter(&bind->fwb_mtx); |
| 1211 | rb->xfer = STAILQ_FIRST(&bind->xferlist); |
| 1212 | if (rb->xfer == NULL) { |
| 1213 | mutex_exit(&bind->fwb_mtx); |
| 1214 | #if 1 |
| 1215 | aprint_error_dev(rb->fc->bdev, |
| 1216 | "Discard a packet for this bind.\n" ); |
| 1217 | #endif |
| 1218 | return; |
| 1219 | } |
| 1220 | STAILQ_REMOVE_HEAD(&bind->xferlist, link); |
| 1221 | mutex_exit(&bind->fwb_mtx); |
| 1222 | fw_rcv_copy(rb); |
| 1223 | rb->xfer->hand(rb->xfer); |
| 1224 | return; |
| 1225 | |
| 1226 | default: |
| 1227 | aprint_error_dev(rb->fc->bdev, "unknow tcode %d\n" , tcode); |
| 1228 | break; |
| 1229 | } |
| 1230 | } |
| 1231 | |
| 1232 | /* |
| 1233 | * CRC16 check-sum for IEEE1394 register blocks. |
| 1234 | */ |
| 1235 | uint16_t |
| 1236 | fw_crc16(uint32_t *ptr, uint32_t len) |
| 1237 | { |
| 1238 | uint32_t i, sum, crc = 0; |
| 1239 | int shift; |
| 1240 | |
| 1241 | len = (len + 3) & ~3; |
| 1242 | for (i = 0; i < len; i+= 4) { |
| 1243 | for (shift = 28; shift >= 0; shift -= 4) { |
| 1244 | sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf; |
| 1245 | crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum; |
| 1246 | } |
| 1247 | crc &= 0xffff; |
| 1248 | } |
| 1249 | return (uint16_t)crc; |
| 1250 | } |
| 1251 | |
| 1252 | int |
| 1253 | fw_open_isodma(struct firewire_comm *fc, int tx) |
| 1254 | { |
| 1255 | struct fw_xferq **xferqa; |
| 1256 | struct fw_xferq *xferq; |
| 1257 | int i; |
| 1258 | |
| 1259 | if (tx) |
| 1260 | xferqa = fc->it; |
| 1261 | else |
| 1262 | xferqa = fc->ir; |
| 1263 | |
| 1264 | mutex_enter(&fc->fc_mtx); |
| 1265 | for (i = 0; i < fc->nisodma; i++) { |
| 1266 | xferq = xferqa[i]; |
| 1267 | if (!(xferq->flag & FWXFERQ_OPEN)) { |
| 1268 | xferq->flag |= FWXFERQ_OPEN; |
| 1269 | break; |
| 1270 | } |
| 1271 | } |
| 1272 | if (i == fc->nisodma) { |
| 1273 | aprint_error_dev(fc->bdev, "no free dma channel (tx=%d)\n" , tx); |
| 1274 | i = -1; |
| 1275 | } |
| 1276 | mutex_exit(&fc->fc_mtx); |
| 1277 | return i; |
| 1278 | } |
| 1279 | |
| 1280 | /* |
| 1281 | * Async. request with given xfer structure. |
| 1282 | */ |
| 1283 | static void |
| 1284 | fw_asystart(struct fw_xfer *xfer) |
| 1285 | { |
| 1286 | struct firewire_comm *fc = xfer->fc; |
| 1287 | |
| 1288 | /* Protect from interrupt/timeout */ |
| 1289 | mutex_enter(&xfer->q->q_mtx); |
| 1290 | xfer->flag = FWXF_INQ; |
| 1291 | STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link); |
| 1292 | #if 0 |
| 1293 | xfer->q->queued++; |
| 1294 | #endif |
| 1295 | mutex_exit(&xfer->q->q_mtx); |
| 1296 | /* XXX just queue for mbuf */ |
| 1297 | if (xfer->mbuf == NULL) |
| 1298 | xfer->q->start(fc); |
| 1299 | return; |
| 1300 | } |
| 1301 | |
| 1302 | static void |
| 1303 | firewire_xfer_timeout(struct firewire_comm *fc) |
| 1304 | { |
| 1305 | struct fw_xfer *xfer; |
| 1306 | struct timeval tv; |
| 1307 | struct timeval split_timeout; |
| 1308 | STAILQ_HEAD(, fw_xfer) xfer_timeout; |
| 1309 | int i; |
| 1310 | |
| 1311 | split_timeout.tv_sec = 0; |
| 1312 | split_timeout.tv_usec = 200 * 1000; /* 200 msec */ |
| 1313 | |
| 1314 | microtime(&tv); |
| 1315 | timersub(&tv, &split_timeout, &tv); |
| 1316 | STAILQ_INIT(&xfer_timeout); |
| 1317 | |
| 1318 | mutex_enter(&fc->tlabel_lock); |
| 1319 | for (i = 0; i < 0x40; i++) { |
| 1320 | while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) { |
| 1321 | if ((xfer->flag & FWXF_SENT) == 0) |
| 1322 | /* not sent yet */ |
| 1323 | break; |
| 1324 | if (timercmp(&xfer->tv, &tv, >)) |
| 1325 | /* the rests are newer than this */ |
| 1326 | break; |
| 1327 | aprint_error_dev(fc->bdev, |
| 1328 | "split transaction timeout: tl=0x%x flag=0x%02x\n" , |
| 1329 | i, xfer->flag); |
| 1330 | fw_dump_hdr(&xfer->send.hdr, "send" ); |
| 1331 | xfer->resp = ETIMEDOUT; |
| 1332 | STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel); |
| 1333 | STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel); |
| 1334 | } |
| 1335 | } |
| 1336 | mutex_exit(&fc->tlabel_lock); |
| 1337 | fc->timeout(fc); |
| 1338 | |
| 1339 | STAILQ_FOREACH(xfer, &xfer_timeout, tlabel) |
| 1340 | xfer->hand(xfer); |
| 1341 | } |
| 1342 | |
| 1343 | #define WATCHDOG_HZ 10 |
| 1344 | static void |
| 1345 | firewire_watchdog(void *arg) |
| 1346 | { |
| 1347 | struct firewire_comm *fc; |
| 1348 | static int watchdog_clock = 0; |
| 1349 | |
| 1350 | fc = (struct firewire_comm *)arg; |
| 1351 | |
| 1352 | /* |
| 1353 | * At boot stage, the device interrupt is disabled and |
| 1354 | * We encounter a timeout easily. To avoid this, |
| 1355 | * ignore clock interrupt for a while. |
| 1356 | */ |
| 1357 | if (watchdog_clock > WATCHDOG_HZ * 15) |
| 1358 | firewire_xfer_timeout(fc); |
| 1359 | else |
| 1360 | watchdog_clock++; |
| 1361 | |
| 1362 | callout_schedule(&fc->timeout_callout, hz / WATCHDOG_HZ); |
| 1363 | } |
| 1364 | |
| 1365 | static void |
| 1366 | fw_xferq_drain(struct fw_xferq *xferq) |
| 1367 | { |
| 1368 | struct fw_xfer *xfer; |
| 1369 | |
| 1370 | while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) { |
| 1371 | STAILQ_REMOVE_HEAD(&xferq->q, link); |
| 1372 | #if 0 |
| 1373 | xferq->queued--; |
| 1374 | #endif |
| 1375 | xfer->resp = EAGAIN; |
| 1376 | xfer->flag = FWXF_SENTERR; |
| 1377 | fw_xfer_done(xfer); |
| 1378 | } |
| 1379 | } |
| 1380 | |
| 1381 | static void |
| 1382 | fw_reset_csr(struct firewire_comm *fc) |
| 1383 | { |
| 1384 | int i; |
| 1385 | |
| 1386 | CSRARC(fc, STATE_CLEAR) = |
| 1387 | 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; |
| 1388 | CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); |
| 1389 | CSRARC(fc, NODE_IDS) = 0x3f; |
| 1390 | |
| 1391 | CSRARC(fc, TOPO_MAP + 8) = 0; |
| 1392 | fc->irm = -1; |
| 1393 | |
| 1394 | fc->max_node = -1; |
| 1395 | |
| 1396 | for (i = 2; i < 0x100/4 - 2; i++) |
| 1397 | CSRARC(fc, SPED_MAP + i * 4) = 0; |
| 1398 | CSRARC(fc, STATE_CLEAR) = |
| 1399 | 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14; |
| 1400 | CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); |
| 1401 | CSRARC(fc, RESET_START) = 0; |
| 1402 | CSRARC(fc, SPLIT_TIMEOUT_HI) = 0; |
| 1403 | CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19; |
| 1404 | CSRARC(fc, CYCLE_TIME) = 0x0; |
| 1405 | CSRARC(fc, BUS_TIME) = 0x0; |
| 1406 | CSRARC(fc, BUS_MGR_ID) = 0x3f; |
| 1407 | CSRARC(fc, BANDWIDTH_AV) = 4915; |
| 1408 | CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff; |
| 1409 | CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff; |
| 1410 | CSRARC(fc, IP_CHANNELS) = (1 << 31); |
| 1411 | |
| 1412 | CSRARC(fc, CONF_ROM) = 0x04 << 24; |
| 1413 | CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */ |
| 1414 | CSRARC(fc, CONF_ROM + 8) = |
| 1415 | 1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 | 0xff << 16 | 0x09 << 8; |
| 1416 | CSRARC(fc, CONF_ROM + 0xc) = 0; |
| 1417 | |
| 1418 | /* DV depend CSRs see blue book */ |
| 1419 | CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON; |
| 1420 | CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON; |
| 1421 | |
| 1422 | CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14); |
| 1423 | CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR); |
| 1424 | } |
| 1425 | |
| 1426 | static void |
| 1427 | fw_init_crom(struct firewire_comm *fc) |
| 1428 | { |
| 1429 | struct crom_src *src; |
| 1430 | |
| 1431 | src = &fc->crom_src_buf->src; |
| 1432 | memset(src, 0, sizeof(struct crom_src)); |
| 1433 | |
| 1434 | /* BUS info sample */ |
| 1435 | src->hdr.info_len = 4; |
| 1436 | |
| 1437 | src->businfo.bus_name = CSR_BUS_NAME_IEEE1394; |
| 1438 | |
| 1439 | src->businfo.irmc = 1; |
| 1440 | src->businfo.cmc = 1; |
| 1441 | src->businfo.isc = 1; |
| 1442 | src->businfo.bmc = 1; |
| 1443 | src->businfo.pmc = 0; |
| 1444 | src->businfo.cyc_clk_acc = 100; |
| 1445 | src->businfo.max_rec = fc->maxrec; |
| 1446 | src->businfo.max_rom = MAXROM_4; |
| 1447 | src->businfo.generation = FW_GENERATION_CHANGEABLE; |
| 1448 | src->businfo.link_spd = fc->speed; |
| 1449 | |
| 1450 | src->businfo.eui64.hi = fc->eui.hi; |
| 1451 | src->businfo.eui64.lo = fc->eui.lo; |
| 1452 | |
| 1453 | STAILQ_INIT(&src->chunk_list); |
| 1454 | |
| 1455 | fc->crom_src = src; |
| 1456 | fc->crom_root = &fc->crom_src_buf->root; |
| 1457 | } |
| 1458 | |
| 1459 | static void |
| 1460 | fw_reset_crom(struct firewire_comm *fc) |
| 1461 | { |
| 1462 | struct crom_src_buf *buf; |
| 1463 | struct crom_src *src; |
| 1464 | struct crom_chunk *root; |
| 1465 | |
| 1466 | buf = fc->crom_src_buf; |
| 1467 | src = fc->crom_src; |
| 1468 | root = fc->crom_root; |
| 1469 | |
| 1470 | STAILQ_INIT(&src->chunk_list); |
| 1471 | |
| 1472 | memset(root, 0, sizeof(struct crom_chunk)); |
| 1473 | crom_add_chunk(src, NULL, root, 0); |
| 1474 | crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */ |
| 1475 | /* private company_id */ |
| 1476 | crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE); |
| 1477 | crom_add_simple_text(src, root, &buf->vendor, PROJECT_STR); |
| 1478 | crom_add_entry(root, CSRKEY_HW, __NetBSD_Version__); |
| 1479 | crom_add_simple_text(src, root, &buf->hw, hostname); |
| 1480 | } |
| 1481 | |
| 1482 | /* |
| 1483 | * dump packet header |
| 1484 | */ |
| 1485 | static void |
| 1486 | fw_dump_hdr(struct fw_pkt *fp, const char *prefix) |
| 1487 | { |
| 1488 | |
| 1489 | printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x " |
| 1490 | "src=0x%03x\n" , prefix, |
| 1491 | fp->mode.hdr.dst & 0x3f, |
| 1492 | fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3, |
| 1493 | fp->mode.hdr.tcode, fp->mode.hdr.pri, |
| 1494 | fp->mode.hdr.src); |
| 1495 | } |
| 1496 | |
| 1497 | /* |
| 1498 | * To free transaction label. |
| 1499 | */ |
| 1500 | static void |
| 1501 | fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer) |
| 1502 | { |
| 1503 | struct fw_xfer *txfer; |
| 1504 | |
| 1505 | if (xfer->tl < 0) |
| 1506 | return; |
| 1507 | |
| 1508 | mutex_enter(&fc->tlabel_lock); |
| 1509 | #if 1 /* make sure the label is allocated */ |
| 1510 | STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel) |
| 1511 | if (txfer == xfer) |
| 1512 | break; |
| 1513 | if (txfer == NULL) { |
| 1514 | mutex_exit(&fc->tlabel_lock); |
| 1515 | aprint_error_dev(fc->bdev, |
| 1516 | "the xfer is not in the queue (tlabel=%d, flag=0x%x)\n" , |
| 1517 | xfer->tl, xfer->flag); |
| 1518 | fw_dump_hdr(&xfer->send.hdr, "send" ); |
| 1519 | fw_dump_hdr(&xfer->recv.hdr, "recv" ); |
| 1520 | KASSERT(FALSE); |
| 1521 | return; |
| 1522 | } |
| 1523 | #endif |
| 1524 | |
| 1525 | STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel); |
| 1526 | mutex_exit(&fc->tlabel_lock); |
| 1527 | return; |
| 1528 | } |
| 1529 | |
| 1530 | /* |
| 1531 | * To obtain XFER structure by transaction label. |
| 1532 | */ |
| 1533 | static struct fw_xfer * |
| 1534 | fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode) |
| 1535 | { |
| 1536 | struct fw_xfer *xfer; |
| 1537 | int req; |
| 1538 | |
| 1539 | mutex_enter(&fc->tlabel_lock); |
| 1540 | STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) |
| 1541 | if (xfer->send.hdr.mode.hdr.dst == node) { |
| 1542 | mutex_exit(&fc->tlabel_lock); |
| 1543 | KASSERT(xfer->tl == tlabel); |
| 1544 | /* extra sanity check */ |
| 1545 | req = xfer->send.hdr.mode.hdr.tcode; |
| 1546 | if (xfer->fc->tcode[req].valid_res != tcode) { |
| 1547 | aprint_error_dev(fc->bdev, |
| 1548 | "invalid response tcode (0x%x for 0x%x)\n" , |
| 1549 | tcode, req); |
| 1550 | return NULL; |
| 1551 | } |
| 1552 | |
| 1553 | if (firewire_debug > 2) |
| 1554 | printf("fw_tl2xfer: found tl=%d\n" , tlabel); |
| 1555 | return xfer; |
| 1556 | } |
| 1557 | mutex_exit(&fc->tlabel_lock); |
| 1558 | if (firewire_debug > 1) |
| 1559 | printf("fw_tl2xfer: not found tl=%d\n" , tlabel); |
| 1560 | return NULL; |
| 1561 | } |
| 1562 | |
| 1563 | /* |
| 1564 | * To configure PHY. |
| 1565 | */ |
| 1566 | static void |
| 1567 | fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count) |
| 1568 | { |
| 1569 | struct fw_xfer *xfer; |
| 1570 | struct fw_pkt *fp; |
| 1571 | |
| 1572 | fc->status = FWBUSPHYCONF; |
| 1573 | |
| 1574 | xfer = fw_xfer_alloc(M_FW); |
| 1575 | if (xfer == NULL) |
| 1576 | return; |
| 1577 | xfer->fc = fc; |
| 1578 | xfer->hand = fw_asy_callback_free; |
| 1579 | |
| 1580 | fp = &xfer->send.hdr; |
| 1581 | fp->mode.ld[1] = 0; |
| 1582 | if (root_node >= 0) |
| 1583 | fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23; |
| 1584 | if (gap_count >= 0) |
| 1585 | fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16; |
| 1586 | fp->mode.ld[2] = ~fp->mode.ld[1]; |
| 1587 | /* XXX Dangerous, how to pass PHY packet to device driver */ |
| 1588 | fp->mode.common.tcode |= FWTCODE_PHY; |
| 1589 | |
| 1590 | if (firewire_debug) |
| 1591 | printf("root_node=%d gap_count=%d\n" , root_node, gap_count); |
| 1592 | fw_asyreq(fc, -1, xfer); |
| 1593 | } |
| 1594 | |
| 1595 | /* |
| 1596 | * Dump self ID. |
| 1597 | */ |
| 1598 | static void |
| 1599 | fw_print_sid(uint32_t sid) |
| 1600 | { |
| 1601 | union fw_self_id *s; |
| 1602 | |
| 1603 | s = (union fw_self_id *) &sid; |
| 1604 | if (s->p0.sequel) { |
| 1605 | if (s->p1.sequence_num == FW_SELF_ID_PAGE0) |
| 1606 | printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d" |
| 1607 | "p8:%d p9:%d p10:%d\n" , |
| 1608 | s->p1.phy_id, s->p1.port3, s->p1.port4, |
| 1609 | s->p1.port5, s->p1.port6, s->p1.port7, |
| 1610 | s->p1.port8, s->p1.port9, s->p1.port10); |
| 1611 | else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) |
| 1612 | printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n" , |
| 1613 | s->p2.phy_id, s->p2.port11, s->p2.port12, |
| 1614 | s->p2.port13, s->p2.port14, s->p2.port15); |
| 1615 | else |
| 1616 | printf("node:%d Unknown Self ID Page number %d\n" , |
| 1617 | s->p1.phy_id, s->p1.sequence_num); |
| 1618 | } else |
| 1619 | printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d" |
| 1620 | " p0:%d p1:%d p2:%d i:%d m:%d\n" , |
| 1621 | s->p0.phy_id, s->p0.link_active, s->p0.gap_count, |
| 1622 | s->p0.phy_speed, s->p0.contender, |
| 1623 | s->p0.power_class, s->p0.port0, s->p0.port1, |
| 1624 | s->p0.port2, s->p0.initiated_reset, s->p0.more_packets); |
| 1625 | } |
| 1626 | |
| 1627 | /* |
| 1628 | * To probe devices on the IEEE1394 bus. |
| 1629 | */ |
| 1630 | static void |
| 1631 | fw_bus_probe(struct firewire_comm *fc) |
| 1632 | { |
| 1633 | struct fw_device *fwdev; |
| 1634 | |
| 1635 | mutex_enter(&fc->wait_lock); |
| 1636 | fc->status = FWBUSEXPLORE; |
| 1637 | |
| 1638 | /* Invalidate all devices, just after bus reset. */ |
| 1639 | if (firewire_debug) |
| 1640 | printf("iterate and invalidate all nodes\n" ); |
| 1641 | mutex_enter(&fc->fc_mtx); |
| 1642 | STAILQ_FOREACH(fwdev, &fc->devices, link) |
| 1643 | if (fwdev->status != FWDEVINVAL) { |
| 1644 | fwdev->status = FWDEVINVAL; |
| 1645 | fwdev->rcnt = 0; |
| 1646 | if (firewire_debug) |
| 1647 | printf("Invalidate Dev ID: %08x%08x\n" , |
| 1648 | fwdev->eui.hi, fwdev->eui.lo); |
| 1649 | } else |
| 1650 | if (firewire_debug) |
| 1651 | printf("Dev ID: %08x%08x already invalid\n" , |
| 1652 | fwdev->eui.hi, fwdev->eui.lo); |
| 1653 | mutex_exit(&fc->fc_mtx); |
| 1654 | |
| 1655 | cv_signal(&fc->fc_cv); |
| 1656 | mutex_exit(&fc->wait_lock); |
| 1657 | } |
| 1658 | |
| 1659 | static int |
| 1660 | fw_explore_read_quads(struct fw_device *fwdev, int offset, uint32_t *quad, |
| 1661 | int length) |
| 1662 | { |
| 1663 | struct fw_xfer *xfer; |
| 1664 | uint32_t tmp; |
| 1665 | int i, error; |
| 1666 | |
| 1667 | for (i = 0; i < length; i++, offset += sizeof(uint32_t)) { |
| 1668 | xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff, |
| 1669 | 0xf0000000 | offset, (void *)&tmp, fw_xferwake); |
| 1670 | if (xfer == NULL) |
| 1671 | return -1; |
| 1672 | fw_xferwait(xfer); |
| 1673 | |
| 1674 | if (xfer->resp == 0) |
| 1675 | quad[i] = ntohl(tmp); |
| 1676 | |
| 1677 | error = xfer->resp; |
| 1678 | fw_xfer_free(xfer); |
| 1679 | if (error) |
| 1680 | return error; |
| 1681 | } |
| 1682 | return 0; |
| 1683 | } |
| 1684 | |
| 1685 | |
| 1686 | static int |
| 1687 | fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur) |
| 1688 | { |
| 1689 | int err, i, off; |
| 1690 | struct csrdirectory *dir; |
| 1691 | struct csrreg *reg; |
| 1692 | |
| 1693 | |
| 1694 | dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)]; |
| 1695 | err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)dir, |
| 1696 | 1); |
| 1697 | if (err) |
| 1698 | return -1; |
| 1699 | |
| 1700 | offset += sizeof(uint32_t); |
| 1701 | reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)]; |
| 1702 | err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)reg, |
| 1703 | dir->crc_len); |
| 1704 | if (err) |
| 1705 | return -1; |
| 1706 | |
| 1707 | /* XXX check CRC */ |
| 1708 | |
| 1709 | off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1); |
| 1710 | if (fwdev->rommax < off) |
| 1711 | fwdev->rommax = off; |
| 1712 | |
| 1713 | if (recur == 0) |
| 1714 | return 0; |
| 1715 | |
| 1716 | for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) { |
| 1717 | if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D) |
| 1718 | recur = 1; |
| 1719 | else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L) |
| 1720 | recur = 0; |
| 1721 | else |
| 1722 | continue; |
| 1723 | |
| 1724 | off = offset + reg[i].val * sizeof(uint32_t); |
| 1725 | if (off > CROMSIZE) { |
| 1726 | aprint_error_dev(fwdev->fc->bdev, "invalid offset %d\n" , |
| 1727 | off); |
| 1728 | return -1; |
| 1729 | } |
| 1730 | err = fw_explore_csrblock(fwdev, off, recur); |
| 1731 | if (err) |
| 1732 | return -1; |
| 1733 | } |
| 1734 | return 0; |
| 1735 | } |
| 1736 | |
| 1737 | static int |
| 1738 | fw_explore_node(struct fw_device *dfwdev) |
| 1739 | { |
| 1740 | struct firewire_comm *fc; |
| 1741 | struct fw_device *fwdev, *pfwdev, *tfwdev; |
| 1742 | struct csrhdr *hdr; |
| 1743 | struct bus_info *binfo; |
| 1744 | uint32_t *csr, speed_test = 0; |
| 1745 | int err, node; |
| 1746 | |
| 1747 | fc = dfwdev->fc; |
| 1748 | csr = dfwdev->csrrom; |
| 1749 | node = dfwdev->dst; |
| 1750 | |
| 1751 | /* First quad */ |
| 1752 | err = fw_explore_read_quads(dfwdev, CSRROMOFF, csr, 1); |
| 1753 | if (err) { |
| 1754 | aprint_error_dev(fc->bdev, |
| 1755 | "node%d: explore_read_quads failure\n" , node); |
| 1756 | dfwdev->status = FWDEVINVAL; |
| 1757 | return -1; |
| 1758 | } |
| 1759 | hdr = (struct csrhdr *)csr; |
| 1760 | if (hdr->info_len != 4) { |
| 1761 | if (firewire_debug) |
| 1762 | printf("node%d: wrong bus info len(%d)\n" , |
| 1763 | node, hdr->info_len); |
| 1764 | dfwdev->status = FWDEVINVAL; |
| 1765 | return -1; |
| 1766 | } |
| 1767 | |
| 1768 | /* bus info */ |
| 1769 | err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4); |
| 1770 | if (err) { |
| 1771 | aprint_error_dev(fc->bdev, "node%d: error reading 0x04\n" , |
| 1772 | node); |
| 1773 | dfwdev->status = FWDEVINVAL; |
| 1774 | return -1; |
| 1775 | } |
| 1776 | binfo = (struct bus_info *)&csr[1]; |
| 1777 | if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) { |
| 1778 | aprint_error_dev(fc->bdev, "node%d: invalid bus name 0x%08x\n" , |
| 1779 | node, binfo->bus_name); |
| 1780 | dfwdev->status = FWDEVINVAL; |
| 1781 | return -1; |
| 1782 | } |
| 1783 | if (firewire_debug) |
| 1784 | printf("node(%d) BUS INFO BLOCK:\n" |
| 1785 | "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) " |
| 1786 | "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) " |
| 1787 | "generation(%d) link_spd(%d)\n" , |
| 1788 | node, binfo->irmc, binfo->cmc, binfo->isc, |
| 1789 | binfo->bmc, binfo->pmc, binfo->cyc_clk_acc, |
| 1790 | binfo->max_rec, binfo->max_rom, |
| 1791 | binfo->generation, binfo->link_spd); |
| 1792 | |
| 1793 | mutex_enter(&fc->fc_mtx); |
| 1794 | STAILQ_FOREACH(fwdev, &fc->devices, link) |
| 1795 | if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64)) |
| 1796 | break; |
| 1797 | mutex_exit(&fc->fc_mtx); |
| 1798 | if (fwdev == NULL) { |
| 1799 | /* new device */ |
| 1800 | fwdev = |
| 1801 | malloc(sizeof(struct fw_device), M_FW, M_NOWAIT | M_ZERO); |
| 1802 | if (fwdev == NULL) { |
| 1803 | if (firewire_debug) |
| 1804 | printf("node%d: no memory\n" , node); |
| 1805 | return -1; |
| 1806 | } |
| 1807 | fwdev->fc = fc; |
| 1808 | fwdev->eui = binfo->eui64; |
| 1809 | fwdev->dst = dfwdev->dst; |
| 1810 | fwdev->maxrec = dfwdev->maxrec; |
| 1811 | fwdev->status = FWDEVNEW; |
| 1812 | /* |
| 1813 | * Pre-1394a-2000 didn't have link_spd in |
| 1814 | * the Bus Info block, so try and use the |
| 1815 | * speed map value. |
| 1816 | * 1394a-2000 compliant devices only use |
| 1817 | * the Bus Info Block link spd value, so |
| 1818 | * ignore the speed map alltogether. SWB |
| 1819 | */ |
| 1820 | if (binfo->link_spd == FWSPD_S100 /* 0 */) { |
| 1821 | aprint_normal_dev(fc->bdev, |
| 1822 | "Pre 1394a-2000 detected\n" ); |
| 1823 | fwdev->speed = fc->speed_map->speed[fc->nodeid][node]; |
| 1824 | } else |
| 1825 | fwdev->speed = binfo->link_spd; |
| 1826 | /* |
| 1827 | * Test this speed with a read to the CSRROM. |
| 1828 | * If it fails, slow down the speed and retry. |
| 1829 | */ |
| 1830 | while (fwdev->speed > FWSPD_S100 /* 0 */) { |
| 1831 | err = fw_explore_read_quads(fwdev, CSRROMOFF, |
| 1832 | &speed_test, 1); |
| 1833 | if (err) { |
| 1834 | aprint_error_dev(fc->bdev, "fwdev->speed(%s)" |
| 1835 | " decremented due to negotiation\n" , |
| 1836 | fw_linkspeed[fwdev->speed]); |
| 1837 | fwdev->speed--; |
| 1838 | } else |
| 1839 | break; |
| 1840 | } |
| 1841 | /* |
| 1842 | * If the fwdev is not found in the |
| 1843 | * fc->devices TAILQ, then we will add it. |
| 1844 | */ |
| 1845 | pfwdev = NULL; |
| 1846 | mutex_enter(&fc->fc_mtx); |
| 1847 | STAILQ_FOREACH(tfwdev, &fc->devices, link) { |
| 1848 | if (tfwdev->eui.hi > fwdev->eui.hi || |
| 1849 | (tfwdev->eui.hi == fwdev->eui.hi && |
| 1850 | tfwdev->eui.lo > fwdev->eui.lo)) |
| 1851 | break; |
| 1852 | pfwdev = tfwdev; |
| 1853 | } |
| 1854 | if (pfwdev == NULL) |
| 1855 | STAILQ_INSERT_HEAD(&fc->devices, fwdev, link); |
| 1856 | else |
| 1857 | STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link); |
| 1858 | mutex_exit(&fc->fc_mtx); |
| 1859 | |
| 1860 | aprint_normal_dev(fc->bdev, "New %s device ID:%08x%08x\n" , |
| 1861 | fw_linkspeed[fwdev->speed], fwdev->eui.hi, fwdev->eui.lo); |
| 1862 | } else { |
| 1863 | fwdev->dst = node; |
| 1864 | fwdev->status = FWDEVINIT; |
| 1865 | /* unchanged ? */ |
| 1866 | if (memcmp(csr, fwdev->csrrom, sizeof(uint32_t) * 5) == 0) { |
| 1867 | if (firewire_debug) |
| 1868 | printf("node%d: crom unchanged\n" , node); |
| 1869 | return 0; |
| 1870 | } |
| 1871 | } |
| 1872 | |
| 1873 | memset(fwdev->csrrom, 0, CROMSIZE); |
| 1874 | |
| 1875 | /* copy first quad and bus info block */ |
| 1876 | memcpy(fwdev->csrrom, csr, sizeof(uint32_t) * 5); |
| 1877 | fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4; |
| 1878 | |
| 1879 | err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */ |
| 1880 | |
| 1881 | if (err) { |
| 1882 | if (firewire_debug) |
| 1883 | printf("explore csrblock failed err(%d)\n" , err); |
| 1884 | fwdev->status = FWDEVINVAL; |
| 1885 | fwdev->csrrom[0] = 0; |
| 1886 | } |
| 1887 | return err; |
| 1888 | } |
| 1889 | |
| 1890 | /* |
| 1891 | * Find the self_id packet for a node, ignoring sequels. |
| 1892 | */ |
| 1893 | static union fw_self_id * |
| 1894 | fw_find_self_id(struct firewire_comm *fc, int node) |
| 1895 | { |
| 1896 | uint32_t i; |
| 1897 | union fw_self_id *s; |
| 1898 | |
| 1899 | for (i = 0; i < fc->topology_map->self_id_count; i++) { |
| 1900 | s = &fc->topology_map->self_id[i]; |
| 1901 | if (s->p0.sequel) |
| 1902 | continue; |
| 1903 | if (s->p0.phy_id == node) |
| 1904 | return s; |
| 1905 | } |
| 1906 | return 0; |
| 1907 | } |
| 1908 | |
| 1909 | static void |
| 1910 | fw_explore(struct firewire_comm *fc) |
| 1911 | { |
| 1912 | struct fw_device *dfwdev; |
| 1913 | union fw_self_id *fwsid; |
| 1914 | int node, err, i, todo, todo2, trys; |
| 1915 | char nodes[63]; |
| 1916 | |
| 1917 | todo = 0; |
| 1918 | dfwdev = malloc(sizeof(*dfwdev), M_TEMP, M_NOWAIT); |
| 1919 | if (dfwdev == NULL) |
| 1920 | return; |
| 1921 | /* setup dummy fwdev */ |
| 1922 | dfwdev->fc = fc; |
| 1923 | dfwdev->speed = 0; |
| 1924 | dfwdev->maxrec = 8; /* 512 */ |
| 1925 | dfwdev->status = FWDEVINIT; |
| 1926 | |
| 1927 | for (node = 0; node <= fc->max_node; node++) { |
| 1928 | /* We don't probe myself and linkdown nodes */ |
| 1929 | if (node == fc->nodeid) { |
| 1930 | if (firewire_debug) |
| 1931 | printf("found myself node(%d) fc->nodeid(%d)" |
| 1932 | " fc->max_node(%d)\n" , |
| 1933 | node, fc->nodeid, fc->max_node); |
| 1934 | continue; |
| 1935 | } else if (firewire_debug) |
| 1936 | printf("node(%d) fc->max_node(%d) found\n" , |
| 1937 | node, fc->max_node); |
| 1938 | fwsid = fw_find_self_id(fc, node); |
| 1939 | if (!fwsid || !fwsid->p0.link_active) { |
| 1940 | if (firewire_debug) |
| 1941 | printf("node%d: link down\n" , node); |
| 1942 | continue; |
| 1943 | } |
| 1944 | nodes[todo++] = node; |
| 1945 | } |
| 1946 | |
| 1947 | for (trys = 0; todo > 0 && trys < 3; trys++) { |
| 1948 | todo2 = 0; |
| 1949 | for (i = 0; i < todo; i++) { |
| 1950 | dfwdev->dst = nodes[i]; |
| 1951 | err = fw_explore_node(dfwdev); |
| 1952 | if (err) |
| 1953 | nodes[todo2++] = nodes[i]; |
| 1954 | if (firewire_debug) |
| 1955 | printf("node %d, err = %d\n" , nodes[i], err); |
| 1956 | } |
| 1957 | todo = todo2; |
| 1958 | } |
| 1959 | free(dfwdev, M_TEMP); |
| 1960 | } |
| 1961 | |
| 1962 | static void |
| 1963 | fw_bus_probe_thread(void *arg) |
| 1964 | { |
| 1965 | struct firewire_comm *fc = (struct firewire_comm *)arg; |
| 1966 | |
| 1967 | /* |
| 1968 | * Tell config we've scanned the bus. |
| 1969 | * |
| 1970 | * XXX This is not right -- we haven't actually scanned it. We |
| 1971 | * probably ought to call this after the first bus exploration. |
| 1972 | * |
| 1973 | * bool once = false; |
| 1974 | * ... |
| 1975 | * fw_attach_dev(fc); |
| 1976 | * if (!once) { |
| 1977 | * config_pending_decr(); |
| 1978 | * once = true; |
| 1979 | * } |
| 1980 | */ |
| 1981 | config_pending_decr(fc->bdev); |
| 1982 | |
| 1983 | mutex_enter(&fc->wait_lock); |
| 1984 | while (fc->status != FWBUSDETACH) { |
| 1985 | if (fc->status == FWBUSEXPLORE) { |
| 1986 | mutex_exit(&fc->wait_lock); |
| 1987 | fw_explore(fc); |
| 1988 | fc->status = FWBUSEXPDONE; |
| 1989 | if (firewire_debug) |
| 1990 | printf("bus_explore done\n" ); |
| 1991 | fw_attach_dev(fc); |
| 1992 | mutex_enter(&fc->wait_lock); |
| 1993 | } |
| 1994 | cv_wait_sig(&fc->fc_cv, &fc->wait_lock); |
| 1995 | } |
| 1996 | fc->status = FWBUSDETACHOK; |
| 1997 | cv_signal(&fc->fc_cv); |
| 1998 | mutex_exit(&fc->wait_lock); |
| 1999 | kthread_exit(0); |
| 2000 | |
| 2001 | /* NOTREACHED */ |
| 2002 | } |
| 2003 | |
| 2004 | static const char * |
| 2005 | fw_get_devclass(struct fw_device *fwdev) |
| 2006 | { |
| 2007 | struct crom_context cc; |
| 2008 | struct csrreg *reg; |
| 2009 | |
| 2010 | crom_init_context(&cc, fwdev->csrrom); |
| 2011 | reg = crom_search_key(&cc, CSRKEY_VER); |
| 2012 | if (reg == NULL) |
| 2013 | return "null" ; |
| 2014 | |
| 2015 | switch (reg->val) { |
| 2016 | case CSR_PROTAVC: |
| 2017 | return "av/c" ; |
| 2018 | case CSR_PROTCAL: |
| 2019 | return "cal" ; |
| 2020 | case CSR_PROTEHS: |
| 2021 | return "ehs" ; |
| 2022 | case CSR_PROTHAVI: |
| 2023 | return "havi" ; |
| 2024 | case CSR_PROTCAM104: |
| 2025 | return "cam104" ; |
| 2026 | case CSR_PROTCAM120: |
| 2027 | return "cam120" ; |
| 2028 | case CSR_PROTCAM130: |
| 2029 | return "cam130" ; |
| 2030 | case CSR_PROTDPP: |
| 2031 | return "printer" ; |
| 2032 | case CSR_PROTIICP: |
| 2033 | return "iicp" ; |
| 2034 | case CSRVAL_T10SBP2: |
| 2035 | return "sbp" ; |
| 2036 | default: |
| 2037 | if (firewire_debug) |
| 2038 | printf("%s: reg->val 0x%x\n" , |
| 2039 | __func__, reg->val); |
| 2040 | return "sbp" ; |
| 2041 | } |
| 2042 | } |
| 2043 | |
| 2044 | /* |
| 2045 | * To attach sub-devices layer onto IEEE1394 bus. |
| 2046 | */ |
| 2047 | static void |
| 2048 | fw_attach_dev(struct firewire_comm *fc) |
| 2049 | { |
| 2050 | struct firewire_softc *sc = device_private(fc->bdev); |
| 2051 | struct firewire_dev_list *devlist, *elm; |
| 2052 | struct fw_device *fwdev, *next; |
| 2053 | struct firewire_dev_comm *fdc; |
| 2054 | struct fw_attach_args fwa; |
| 2055 | int locs[IEEE1394IFCF_NLOCS]; |
| 2056 | |
| 2057 | fwa.name = "null" ; |
| 2058 | fwa.fc = fc; |
| 2059 | |
| 2060 | mutex_enter(&fc->fc_mtx); |
| 2061 | for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { |
| 2062 | next = STAILQ_NEXT(fwdev, link); |
| 2063 | mutex_exit(&fc->fc_mtx); |
| 2064 | switch (fwdev->status) { |
| 2065 | case FWDEVNEW: |
| 2066 | devlist = malloc(sizeof(struct firewire_dev_list), |
| 2067 | M_DEVBUF, M_NOWAIT); |
| 2068 | if (devlist == NULL) { |
| 2069 | aprint_error_dev(fc->bdev, |
| 2070 | "memory allocation failed\n" ); |
| 2071 | break; |
| 2072 | } |
| 2073 | |
| 2074 | locs[IEEE1394IFCF_EUIHI] = fwdev->eui.hi; |
| 2075 | locs[IEEE1394IFCF_EUILO] = fwdev->eui.lo; |
| 2076 | |
| 2077 | fwa.name = fw_get_devclass(fwdev); |
| 2078 | fwa.fwdev = fwdev; |
| 2079 | fwdev->dev = config_found_sm_loc(sc->dev, "ieee1394if" , |
| 2080 | locs, &fwa, firewire_print, config_stdsubmatch); |
| 2081 | if (fwdev->dev == NULL) { |
| 2082 | free(devlist, M_DEVBUF); |
| 2083 | break; |
| 2084 | } |
| 2085 | |
| 2086 | devlist->fwdev = fwdev; |
| 2087 | devlist->dev = fwdev->dev; |
| 2088 | |
| 2089 | mutex_enter(&fc->fc_mtx); |
| 2090 | if (SLIST_EMPTY(&sc->devlist)) |
| 2091 | SLIST_INSERT_HEAD(&sc->devlist, devlist, link); |
| 2092 | else { |
| 2093 | for (elm = SLIST_FIRST(&sc->devlist); |
| 2094 | SLIST_NEXT(elm, link) != NULL; |
| 2095 | elm = SLIST_NEXT(elm, link)); |
| 2096 | SLIST_INSERT_AFTER(elm, devlist, link); |
| 2097 | } |
| 2098 | mutex_exit(&fc->fc_mtx); |
| 2099 | |
| 2100 | /* FALLTHROUGH */ |
| 2101 | |
| 2102 | case FWDEVINIT: |
| 2103 | case FWDEVATTACHED: |
| 2104 | fwdev->status = FWDEVATTACHED; |
| 2105 | break; |
| 2106 | |
| 2107 | case FWDEVINVAL: |
| 2108 | fwdev->rcnt++; |
| 2109 | if (firewire_debug) |
| 2110 | printf("fwdev->rcnt(%d), hold_count(%d)\n" , |
| 2111 | fwdev->rcnt, hold_count); |
| 2112 | break; |
| 2113 | |
| 2114 | default: |
| 2115 | /* XXX */ |
| 2116 | break; |
| 2117 | } |
| 2118 | mutex_enter(&fc->fc_mtx); |
| 2119 | } |
| 2120 | mutex_exit(&fc->fc_mtx); |
| 2121 | |
| 2122 | SLIST_FOREACH(devlist, &sc->devlist, link) { |
| 2123 | fdc = device_private(devlist->dev); |
| 2124 | if (fdc->post_explore != NULL) |
| 2125 | fdc->post_explore(fdc); |
| 2126 | } |
| 2127 | |
| 2128 | for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) { |
| 2129 | next = STAILQ_NEXT(fwdev, link); |
| 2130 | if (fwdev->rcnt > 0 && fwdev->rcnt > hold_count) { |
| 2131 | /* |
| 2132 | * Remove devices which have not been seen |
| 2133 | * for a while. |
| 2134 | */ |
| 2135 | SLIST_FOREACH(devlist, &sc->devlist, link) |
| 2136 | if (devlist->fwdev == fwdev) |
| 2137 | break; |
| 2138 | |
| 2139 | if (devlist == NULL) |
| 2140 | continue; |
| 2141 | |
| 2142 | if (devlist->fwdev != fwdev) |
| 2143 | panic("already detached" ); |
| 2144 | |
| 2145 | SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list, |
| 2146 | link); |
| 2147 | free(devlist, M_DEVBUF); |
| 2148 | |
| 2149 | if (config_detach(fwdev->dev, DETACH_FORCE) != 0) |
| 2150 | return; |
| 2151 | |
| 2152 | STAILQ_REMOVE(&fc->devices, fwdev, fw_device, link); |
| 2153 | free(fwdev, M_FW); |
| 2154 | } |
| 2155 | } |
| 2156 | |
| 2157 | return; |
| 2158 | } |
| 2159 | |
| 2160 | /* |
| 2161 | * To allocate unique transaction label. |
| 2162 | */ |
| 2163 | static int |
| 2164 | fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer) |
| 2165 | { |
| 2166 | u_int dst, new_tlabel; |
| 2167 | struct fw_xfer *txfer; |
| 2168 | |
| 2169 | dst = xfer->send.hdr.mode.hdr.dst & 0x3f; |
| 2170 | mutex_enter(&fc->tlabel_lock); |
| 2171 | new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f; |
| 2172 | STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel) |
| 2173 | if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst) |
| 2174 | break; |
| 2175 | if (txfer == NULL) { |
| 2176 | fc->last_tlabel[dst] = new_tlabel; |
| 2177 | STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel); |
| 2178 | mutex_exit(&fc->tlabel_lock); |
| 2179 | xfer->tl = new_tlabel; |
| 2180 | xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2; |
| 2181 | if (firewire_debug > 1) |
| 2182 | printf("fw_get_tlabel: dst=%d tl=%d\n" , |
| 2183 | dst, new_tlabel); |
| 2184 | return new_tlabel; |
| 2185 | } |
| 2186 | mutex_exit(&fc->tlabel_lock); |
| 2187 | |
| 2188 | if (firewire_debug > 1) |
| 2189 | printf("fw_get_tlabel: no free tlabel\n" ); |
| 2190 | return -1; |
| 2191 | } |
| 2192 | |
| 2193 | static void |
| 2194 | fw_rcv_copy(struct fw_rcv_buf *rb) |
| 2195 | { |
| 2196 | struct fw_pkt *pkt; |
| 2197 | u_char *p; |
| 2198 | const struct tcode_info *tinfo; |
| 2199 | u_int res, i, len, plen; |
| 2200 | |
| 2201 | rb->xfer->recv.spd = rb->spd; |
| 2202 | |
| 2203 | pkt = (struct fw_pkt *)rb->vec->iov_base; |
| 2204 | tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode]; |
| 2205 | |
| 2206 | /* Copy header */ |
| 2207 | p = (u_char *)&rb->xfer->recv.hdr; |
| 2208 | memcpy(p, rb->vec->iov_base, tinfo->hdr_len); |
| 2209 | rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len; |
| 2210 | rb->vec->iov_len -= tinfo->hdr_len; |
| 2211 | |
| 2212 | /* Copy payload */ |
| 2213 | p = (u_char *)rb->xfer->recv.payload; |
| 2214 | res = rb->xfer->recv.pay_len; |
| 2215 | |
| 2216 | /* special handling for RRESQ */ |
| 2217 | if (pkt->mode.hdr.tcode == FWTCODE_RRESQ && |
| 2218 | p != NULL && res >= sizeof(uint32_t)) { |
| 2219 | *(uint32_t *)p = pkt->mode.rresq.data; |
| 2220 | rb->xfer->recv.pay_len = sizeof(uint32_t); |
| 2221 | return; |
| 2222 | } |
| 2223 | |
| 2224 | if ((tinfo->flag & FWTI_BLOCK_ASY) == 0) |
| 2225 | return; |
| 2226 | |
| 2227 | plen = pkt->mode.rresb.len; |
| 2228 | |
| 2229 | for (i = 0; i < rb->nvec; i++, rb->vec++) { |
| 2230 | len = MIN(rb->vec->iov_len, plen); |
| 2231 | if (res < len) { |
| 2232 | aprint_error_dev(rb->fc->bdev, |
| 2233 | "rcv buffer(%d) is %d bytes short.\n" , |
| 2234 | rb->xfer->recv.pay_len, len - res); |
| 2235 | len = res; |
| 2236 | } |
| 2237 | if (p) { |
| 2238 | memcpy(p, rb->vec->iov_base, len); |
| 2239 | p += len; |
| 2240 | } |
| 2241 | res -= len; |
| 2242 | plen -= len; |
| 2243 | if (res == 0 || plen == 0) |
| 2244 | break; |
| 2245 | } |
| 2246 | rb->xfer->recv.pay_len -= res; |
| 2247 | |
| 2248 | } |
| 2249 | |
| 2250 | /* |
| 2251 | * Post process for Bus Manager election process. |
| 2252 | */ |
| 2253 | static void |
| 2254 | fw_try_bmr_callback(struct fw_xfer *xfer) |
| 2255 | { |
| 2256 | struct firewire_comm *fc; |
| 2257 | int bmr; |
| 2258 | |
| 2259 | if (xfer == NULL) |
| 2260 | return; |
| 2261 | fc = xfer->fc; |
| 2262 | if (xfer->resp != 0) |
| 2263 | goto error; |
| 2264 | if (xfer->recv.payload == NULL) |
| 2265 | goto error; |
| 2266 | if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE) |
| 2267 | goto error; |
| 2268 | |
| 2269 | bmr = ntohl(xfer->recv.payload[0]); |
| 2270 | if (bmr == 0x3f) |
| 2271 | bmr = fc->nodeid; |
| 2272 | |
| 2273 | CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f); |
| 2274 | fw_xfer_free_buf(xfer); |
| 2275 | fw_bmr(fc); |
| 2276 | return; |
| 2277 | |
| 2278 | error: |
| 2279 | aprint_error_dev(fc->bdev, "bus manager election failed\n" ); |
| 2280 | fw_xfer_free_buf(xfer); |
| 2281 | } |
| 2282 | |
| 2283 | |
| 2284 | /* |
| 2285 | * To candidate Bus Manager election process. |
| 2286 | */ |
| 2287 | static void |
| 2288 | fw_try_bmr(void *arg) |
| 2289 | { |
| 2290 | struct fw_xfer *xfer; |
| 2291 | struct firewire_comm *fc = (struct firewire_comm *)arg; |
| 2292 | struct fw_pkt *fp; |
| 2293 | int err = 0; |
| 2294 | |
| 2295 | xfer = fw_xfer_alloc_buf(M_FW, 8, 4); |
| 2296 | if (xfer == NULL) |
| 2297 | return; |
| 2298 | xfer->send.spd = 0; |
| 2299 | fc->status = FWBUSMGRELECT; |
| 2300 | |
| 2301 | fp = &xfer->send.hdr; |
| 2302 | fp->mode.lreq.dest_hi = 0xffff; |
| 2303 | fp->mode.lreq.tlrt = 0; |
| 2304 | fp->mode.lreq.tcode = FWTCODE_LREQ; |
| 2305 | fp->mode.lreq.pri = 0; |
| 2306 | fp->mode.lreq.src = 0; |
| 2307 | fp->mode.lreq.len = 8; |
| 2308 | fp->mode.lreq.extcode = EXTCODE_CMP_SWAP; |
| 2309 | fp->mode.lreq.dst = FWLOCALBUS | fc->irm; |
| 2310 | fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID; |
| 2311 | xfer->send.payload[0] = htonl(0x3f); |
| 2312 | xfer->send.payload[1] = htonl(fc->nodeid); |
| 2313 | xfer->hand = fw_try_bmr_callback; |
| 2314 | |
| 2315 | err = fw_asyreq(fc, -1, xfer); |
| 2316 | if (err) { |
| 2317 | fw_xfer_free_buf(xfer); |
| 2318 | return; |
| 2319 | } |
| 2320 | return; |
| 2321 | } |
| 2322 | |
| 2323 | /* |
| 2324 | * Find the root node, if it is not |
| 2325 | * Cycle Master Capable, then we should |
| 2326 | * override this and become the Cycle |
| 2327 | * Master |
| 2328 | */ |
| 2329 | static int |
| 2330 | fw_bmr(struct firewire_comm *fc) |
| 2331 | { |
| 2332 | struct fw_device fwdev; |
| 2333 | union fw_self_id *self_id; |
| 2334 | int cmstr; |
| 2335 | uint32_t quad; |
| 2336 | |
| 2337 | /* Check to see if the current root node is cycle master capable */ |
| 2338 | self_id = fw_find_self_id(fc, fc->max_node); |
| 2339 | if (fc->max_node > 0) { |
| 2340 | /* XXX check cmc bit of businfo block rather than contender */ |
| 2341 | if (self_id->p0.link_active && self_id->p0.contender) |
| 2342 | cmstr = fc->max_node; |
| 2343 | else { |
| 2344 | aprint_normal_dev(fc->bdev, |
| 2345 | "root node is not cycle master capable\n" ); |
| 2346 | /* XXX shall we be the cycle master? */ |
| 2347 | cmstr = fc->nodeid; |
| 2348 | /* XXX need bus reset */ |
| 2349 | } |
| 2350 | } else |
| 2351 | cmstr = -1; |
| 2352 | |
| 2353 | aprint_normal_dev(fc->bdev, "bus manager %d%s\n" , |
| 2354 | CSRARC(fc, BUS_MGR_ID), |
| 2355 | (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? " (me)" : "" ); |
| 2356 | if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) |
| 2357 | /* We are not the bus manager */ |
| 2358 | return 0; |
| 2359 | |
| 2360 | /* Optimize gapcount */ |
| 2361 | if (fc->max_hop <= MAX_GAPHOP) |
| 2362 | fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]); |
| 2363 | /* If we are the cycle master, nothing to do */ |
| 2364 | if (cmstr == fc->nodeid || cmstr == -1) |
| 2365 | return 0; |
| 2366 | /* Bus probe has not finished, make dummy fwdev for cmstr */ |
| 2367 | memset(&fwdev, 0, sizeof(fwdev)); |
| 2368 | fwdev.fc = fc; |
| 2369 | fwdev.dst = cmstr; |
| 2370 | fwdev.speed = 0; |
| 2371 | fwdev.maxrec = 8; /* 512 */ |
| 2372 | fwdev.status = FWDEVINIT; |
| 2373 | /* Set cmstr bit on the cycle master */ |
| 2374 | quad = htonl(1 << 8); |
| 2375 | fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 0xffff, 0xf0000000 | STATE_SET, |
| 2376 | &quad, fw_asy_callback_free); |
| 2377 | |
| 2378 | return 0; |
| 2379 | } |
| 2380 | |