fwohci.c revision 267961
1/*- 2 * Copyright (c) 2003 Hidetoshi Shimokawa 3 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the acknowledgement as bellow: 16 * 17 * This product includes software developed by K. Kobayashi and H. Shimokawa 18 * 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 * $FreeBSD: head/sys/dev/firewire/fwohci.c 267961 2014-06-27 16:33:43Z hselasky $ 35 * 36 */ 37 38#define ATRQ_CH 0 39#define ATRS_CH 1 40#define ARRQ_CH 2 41#define ARRS_CH 3 42#define ITX_CH 4 43#define IRX_CH 0x24 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/mbuf.h> 48#include <sys/malloc.h> 49#include <sys/sockio.h> 50#include <sys/sysctl.h> 51#include <sys/bus.h> 52#include <sys/kernel.h> 53#include <sys/conf.h> 54#include <sys/endian.h> 55#include <sys/kdb.h> 56 57#include <machine/bus.h> 58 59#if defined(__DragonFly__) || __FreeBSD_version < 500000 60#include <machine/clock.h> /* for DELAY() */ 61#endif 62 63#ifdef __DragonFly__ 64#include "firewire.h" 65#include "firewirereg.h" 66#include "fwdma.h" 67#include "fwohcireg.h" 68#include "fwohcivar.h" 69#include "firewire_phy.h" 70#else 71#include <dev/firewire/firewire.h> 72#include <dev/firewire/firewirereg.h> 73#include <dev/firewire/fwdma.h> 74#include <dev/firewire/fwohcireg.h> 75#include <dev/firewire/fwohcivar.h> 76#include <dev/firewire/firewire_phy.h> 77#endif 78 79#undef OHCI_DEBUG 80 81static int nocyclemaster; 82int firewire_phydma_enable = 1; 83SYSCTL_DECL(_hw_firewire); 84SYSCTL_INT(_hw_firewire, OID_AUTO, nocyclemaster, CTLFLAG_RWTUN, 85 &nocyclemaster, 0, "Do not send cycle start packets"); 86SYSCTL_INT(_hw_firewire, OID_AUTO, phydma_enable, CTLFLAG_RWTUN, 87 &firewire_phydma_enable, 0, "Allow physical request DMA from firewire"); 88 89static char dbcode[16][0x10]={"OUTM", "OUTL","INPM","INPL", 90 "STOR","LOAD","NOP ","STOP",}; 91 92static char dbkey[8][0x10]={"ST0", "ST1","ST2","ST3", 93 "UNDEF","REG","SYS","DEV"}; 94static char dbcond[4][0x10]={"NEV","C=1", "C=0", "ALL"}; 95char fwohcicode[32][0x20]={ 96 "No stat","Undef","long","miss Ack err", 97 "FIFO underrun","FIFO overrun","desc err", "data read err", 98 "data write err","bus reset","timeout","tcode err", 99 "Undef","Undef","unknown event","flushed", 100 "Undef","ack complete","ack pend","Undef", 101 "ack busy_X","ack busy_A","ack busy_B","Undef", 102 "Undef","Undef","Undef","ack tardy", 103 "Undef","ack data_err","ack type_err",""}; 104 105#define MAX_SPEED 3 106extern char *linkspeed[]; 107uint32_t tagbit[4] = { 1 << 28, 1 << 29, 1 << 30, 1 << 31}; 108 109static struct tcode_info tinfo[] = { 110/* hdr_len block flag valid_response */ 111/* 0 WREQQ */ {16, FWTI_REQ | FWTI_TLABEL, FWTCODE_WRES}, 112/* 1 WREQB */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY, FWTCODE_WRES}, 113/* 2 WRES */ {12, FWTI_RES, 0xff}, 114/* 3 XXX */ { 0, 0, 0xff}, 115/* 4 RREQQ */ {12, FWTI_REQ | FWTI_TLABEL, FWTCODE_RRESQ}, 116/* 5 RREQB */ {16, FWTI_REQ | FWTI_TLABEL, FWTCODE_RRESB}, 117/* 6 RRESQ */ {16, FWTI_RES, 0xff}, 118/* 7 RRESB */ {16, FWTI_RES | FWTI_BLOCK_ASY, 0xff}, 119/* 8 CYCS */ { 0, 0, 0xff}, 120/* 9 LREQ */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY, FWTCODE_LRES}, 121/* a STREAM */ { 4, FWTI_REQ | FWTI_BLOCK_STR, 0xff}, 122/* b LRES */ {16, FWTI_RES | FWTI_BLOCK_ASY, 0xff}, 123/* c XXX */ { 0, 0, 0xff}, 124/* d XXX */ { 0, 0, 0xff}, 125/* e PHY */ {12, FWTI_REQ, 0xff}, 126/* f XXX */ { 0, 0, 0xff} 127}; 128 129#define OHCI_WRITE_SIGMASK 0xffff0000 130#define OHCI_READ_SIGMASK 0xffff0000 131 132#define OWRITE(sc, r, x) bus_space_write_4((sc)->bst, (sc)->bsh, (r), (x)) 133#define OREAD(sc, r) bus_space_read_4((sc)->bst, (sc)->bsh, (r)) 134 135static void fwohci_ibr (struct firewire_comm *); 136static void fwohci_db_init (struct fwohci_softc *, struct fwohci_dbch *); 137static void fwohci_db_free (struct fwohci_dbch *); 138static void fwohci_arcv (struct fwohci_softc *, struct fwohci_dbch *, int); 139static void fwohci_txd (struct fwohci_softc *, struct fwohci_dbch *); 140static void fwohci_start_atq (struct firewire_comm *); 141static void fwohci_start_ats (struct firewire_comm *); 142static void fwohci_start (struct fwohci_softc *, struct fwohci_dbch *); 143static uint32_t fwphy_wrdata ( struct fwohci_softc *, uint32_t, uint32_t); 144static uint32_t fwphy_rddata ( struct fwohci_softc *, uint32_t); 145static int fwohci_rx_enable (struct fwohci_softc *, struct fwohci_dbch *); 146static int fwohci_tx_enable (struct fwohci_softc *, struct fwohci_dbch *); 147static int fwohci_irx_enable (struct firewire_comm *, int); 148static int fwohci_irx_disable (struct firewire_comm *, int); 149#if BYTE_ORDER == BIG_ENDIAN 150static void fwohci_irx_post (struct firewire_comm *, uint32_t *); 151#endif 152static int fwohci_itxbuf_enable (struct firewire_comm *, int); 153static int fwohci_itx_disable (struct firewire_comm *, int); 154static void fwohci_timeout (void *); 155static void fwohci_set_intr (struct firewire_comm *, int); 156 157static int fwohci_add_rx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int, struct fwdma_alloc *); 158static int fwohci_add_tx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int); 159static void dump_db (struct fwohci_softc *, uint32_t); 160static void print_db (struct fwohcidb_tr *, struct fwohcidb *, uint32_t , uint32_t); 161static void dump_dma (struct fwohci_softc *, uint32_t); 162static uint32_t fwohci_cyctimer (struct firewire_comm *); 163static void fwohci_rbuf_update (struct fwohci_softc *, int); 164static void fwohci_tbuf_update (struct fwohci_softc *, int); 165void fwohci_txbufdb (struct fwohci_softc *, int , struct fw_bulkxfer *); 166static void fwohci_task_busreset(void *, int); 167static void fwohci_task_sid(void *, int); 168static void fwohci_task_dma(void *, int); 169 170/* 171 * memory allocated for DMA programs 172 */ 173#define DMA_PROG_ALLOC (8 * PAGE_SIZE) 174 175#define NDB FWMAXQUEUE 176 177#define OHCI_VERSION 0x00 178#define OHCI_ATRETRY 0x08 179#define OHCI_CROMHDR 0x18 180#define OHCI_BUS_OPT 0x20 181#define OHCI_BUSIRMC (1U << 31) 182#define OHCI_BUSCMC (1 << 30) 183#define OHCI_BUSISC (1 << 29) 184#define OHCI_BUSBMC (1 << 28) 185#define OHCI_BUSPMC (1 << 27) 186#define OHCI_BUSFNC OHCI_BUSIRMC | OHCI_BUSCMC | OHCI_BUSISC |\ 187 OHCI_BUSBMC | OHCI_BUSPMC 188 189#define OHCI_EUID_HI 0x24 190#define OHCI_EUID_LO 0x28 191 192#define OHCI_CROMPTR 0x34 193#define OHCI_HCCCTL 0x50 194#define OHCI_HCCCTLCLR 0x54 195#define OHCI_AREQHI 0x100 196#define OHCI_AREQHICLR 0x104 197#define OHCI_AREQLO 0x108 198#define OHCI_AREQLOCLR 0x10c 199#define OHCI_PREQHI 0x110 200#define OHCI_PREQHICLR 0x114 201#define OHCI_PREQLO 0x118 202#define OHCI_PREQLOCLR 0x11c 203#define OHCI_PREQUPPER 0x120 204 205#define OHCI_SID_BUF 0x64 206#define OHCI_SID_CNT 0x68 207#define OHCI_SID_ERR (1U << 31) 208#define OHCI_SID_CNT_MASK 0xffc 209 210#define OHCI_IT_STAT 0x90 211#define OHCI_IT_STATCLR 0x94 212#define OHCI_IT_MASK 0x98 213#define OHCI_IT_MASKCLR 0x9c 214 215#define OHCI_IR_STAT 0xa0 216#define OHCI_IR_STATCLR 0xa4 217#define OHCI_IR_MASK 0xa8 218#define OHCI_IR_MASKCLR 0xac 219 220#define OHCI_LNKCTL 0xe0 221#define OHCI_LNKCTLCLR 0xe4 222 223#define OHCI_PHYACCESS 0xec 224#define OHCI_CYCLETIMER 0xf0 225 226#define OHCI_DMACTL(off) (off) 227#define OHCI_DMACTLCLR(off) (off + 4) 228#define OHCI_DMACMD(off) (off + 0xc) 229#define OHCI_DMAMATCH(off) (off + 0x10) 230 231#define OHCI_ATQOFF 0x180 232#define OHCI_ATQCTL OHCI_ATQOFF 233#define OHCI_ATQCTLCLR (OHCI_ATQOFF + 4) 234#define OHCI_ATQCMD (OHCI_ATQOFF + 0xc) 235#define OHCI_ATQMATCH (OHCI_ATQOFF + 0x10) 236 237#define OHCI_ATSOFF 0x1a0 238#define OHCI_ATSCTL OHCI_ATSOFF 239#define OHCI_ATSCTLCLR (OHCI_ATSOFF + 4) 240#define OHCI_ATSCMD (OHCI_ATSOFF + 0xc) 241#define OHCI_ATSMATCH (OHCI_ATSOFF + 0x10) 242 243#define OHCI_ARQOFF 0x1c0 244#define OHCI_ARQCTL OHCI_ARQOFF 245#define OHCI_ARQCTLCLR (OHCI_ARQOFF + 4) 246#define OHCI_ARQCMD (OHCI_ARQOFF + 0xc) 247#define OHCI_ARQMATCH (OHCI_ARQOFF + 0x10) 248 249#define OHCI_ARSOFF 0x1e0 250#define OHCI_ARSCTL OHCI_ARSOFF 251#define OHCI_ARSCTLCLR (OHCI_ARSOFF + 4) 252#define OHCI_ARSCMD (OHCI_ARSOFF + 0xc) 253#define OHCI_ARSMATCH (OHCI_ARSOFF + 0x10) 254 255#define OHCI_ITOFF(CH) (0x200 + 0x10 * (CH)) 256#define OHCI_ITCTL(CH) (OHCI_ITOFF(CH)) 257#define OHCI_ITCTLCLR(CH) (OHCI_ITOFF(CH) + 4) 258#define OHCI_ITCMD(CH) (OHCI_ITOFF(CH) + 0xc) 259 260#define OHCI_IROFF(CH) (0x400 + 0x20 * (CH)) 261#define OHCI_IRCTL(CH) (OHCI_IROFF(CH)) 262#define OHCI_IRCTLCLR(CH) (OHCI_IROFF(CH) + 4) 263#define OHCI_IRCMD(CH) (OHCI_IROFF(CH) + 0xc) 264#define OHCI_IRMATCH(CH) (OHCI_IROFF(CH) + 0x10) 265 266d_ioctl_t fwohci_ioctl; 267 268/* 269 * Communication with PHY device 270 */ 271/* XXX need lock for phy access */ 272static uint32_t 273fwphy_wrdata( struct fwohci_softc *sc, uint32_t addr, uint32_t data) 274{ 275 uint32_t fun; 276 277 addr &= 0xf; 278 data &= 0xff; 279 280 fun = (PHYDEV_WRCMD | (addr << PHYDEV_REGADDR) | (data << PHYDEV_WRDATA)); 281 OWRITE(sc, OHCI_PHYACCESS, fun); 282 DELAY(100); 283 284 return(fwphy_rddata( sc, addr)); 285} 286 287static uint32_t 288fwohci_set_bus_manager(struct firewire_comm *fc, u_int node) 289{ 290 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 291 int i; 292 uint32_t bm; 293 294#define OHCI_CSR_DATA 0x0c 295#define OHCI_CSR_COMP 0x10 296#define OHCI_CSR_CONT 0x14 297#define OHCI_BUS_MANAGER_ID 0 298 299 OWRITE(sc, OHCI_CSR_DATA, node); 300 OWRITE(sc, OHCI_CSR_COMP, 0x3f); 301 OWRITE(sc, OHCI_CSR_CONT, OHCI_BUS_MANAGER_ID); 302 for (i = 0; !(OREAD(sc, OHCI_CSR_CONT) & (1<<31)) && (i < 1000); i++) 303 DELAY(10); 304 bm = OREAD(sc, OHCI_CSR_DATA); 305 if((bm & 0x3f) == 0x3f) 306 bm = node; 307 if (firewire_debug) 308 device_printf(sc->fc.dev, "%s: %d->%d (loop=%d)\n", 309 __func__, bm, node, i); 310 311 return(bm); 312} 313 314static uint32_t 315fwphy_rddata(struct fwohci_softc *sc, u_int addr) 316{ 317 uint32_t fun, stat; 318 u_int i, retry = 0; 319 320 addr &= 0xf; 321#define MAX_RETRY 100 322again: 323 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_REG_FAIL); 324 fun = PHYDEV_RDCMD | (addr << PHYDEV_REGADDR); 325 OWRITE(sc, OHCI_PHYACCESS, fun); 326 for ( i = 0 ; i < MAX_RETRY ; i ++ ){ 327 fun = OREAD(sc, OHCI_PHYACCESS); 328 if ((fun & PHYDEV_RDCMD) == 0 && (fun & PHYDEV_RDDONE) != 0) 329 break; 330 DELAY(100); 331 } 332 if(i >= MAX_RETRY) { 333 if (firewire_debug) 334 device_printf(sc->fc.dev, "%s: failed(1).\n", __func__); 335 if (++retry < MAX_RETRY) { 336 DELAY(100); 337 goto again; 338 } 339 } 340 /* Make sure that SCLK is started */ 341 stat = OREAD(sc, FWOHCI_INTSTAT); 342 if ((stat & OHCI_INT_REG_FAIL) != 0 || 343 ((fun >> PHYDEV_REGADDR) & 0xf) != addr) { 344 if (firewire_debug) 345 device_printf(sc->fc.dev, "%s: failed(2).\n", __func__); 346 if (++retry < MAX_RETRY) { 347 DELAY(100); 348 goto again; 349 } 350 } 351 if (firewire_debug > 1 || retry >= MAX_RETRY) 352 device_printf(sc->fc.dev, 353 "%s:: 0x%x loop=%d, retry=%d\n", 354 __func__, addr, i, retry); 355#undef MAX_RETRY 356 return((fun >> PHYDEV_RDDATA )& 0xff); 357} 358/* Device specific ioctl. */ 359int 360fwohci_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 361{ 362 struct firewire_softc *sc; 363 struct fwohci_softc *fc; 364 int unit = DEV2UNIT(dev); 365 int err = 0; 366 struct fw_reg_req_t *reg = (struct fw_reg_req_t *) data; 367 uint32_t *dmach = (uint32_t *) data; 368 369 sc = devclass_get_softc(firewire_devclass, unit); 370 if(sc == NULL){ 371 return(EINVAL); 372 } 373 fc = (struct fwohci_softc *)sc->fc; 374 375 if (!data) 376 return(EINVAL); 377 378 switch (cmd) { 379 case FWOHCI_WRREG: 380#define OHCI_MAX_REG 0x800 381 if(reg->addr <= OHCI_MAX_REG){ 382 OWRITE(fc, reg->addr, reg->data); 383 reg->data = OREAD(fc, reg->addr); 384 }else{ 385 err = EINVAL; 386 } 387 break; 388 case FWOHCI_RDREG: 389 if(reg->addr <= OHCI_MAX_REG){ 390 reg->data = OREAD(fc, reg->addr); 391 }else{ 392 err = EINVAL; 393 } 394 break; 395/* Read DMA descriptors for debug */ 396 case DUMPDMA: 397 if(*dmach <= OHCI_MAX_DMA_CH ){ 398 dump_dma(fc, *dmach); 399 dump_db(fc, *dmach); 400 }else{ 401 err = EINVAL; 402 } 403 break; 404/* Read/Write Phy registers */ 405#define OHCI_MAX_PHY_REG 0xf 406 case FWOHCI_RDPHYREG: 407 if (reg->addr <= OHCI_MAX_PHY_REG) 408 reg->data = fwphy_rddata(fc, reg->addr); 409 else 410 err = EINVAL; 411 break; 412 case FWOHCI_WRPHYREG: 413 if (reg->addr <= OHCI_MAX_PHY_REG) 414 reg->data = fwphy_wrdata(fc, reg->addr, reg->data); 415 else 416 err = EINVAL; 417 break; 418 default: 419 err = EINVAL; 420 break; 421 } 422 return err; 423} 424 425static int 426fwohci_probe_phy(struct fwohci_softc *sc, device_t dev) 427{ 428 uint32_t reg, reg2; 429 int e1394a = 1; 430/* 431 * probe PHY parameters 432 * 0. to prove PHY version, whether compliance of 1394a. 433 * 1. to probe maximum speed supported by the PHY and 434 * number of port supported by core-logic. 435 * It is not actually available port on your PC . 436 */ 437 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS); 438 DELAY(500); 439 440 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 441 442 if((reg >> 5) != 7 ){ 443 sc->fc.mode &= ~FWPHYASYST; 444 sc->fc.nport = reg & FW_PHY_NP; 445 sc->fc.speed = reg & FW_PHY_SPD >> 6; 446 if (sc->fc.speed > MAX_SPEED) { 447 device_printf(dev, "invalid speed %d (fixed to %d).\n", 448 sc->fc.speed, MAX_SPEED); 449 sc->fc.speed = MAX_SPEED; 450 } 451 device_printf(dev, 452 "Phy 1394 only %s, %d ports.\n", 453 linkspeed[sc->fc.speed], sc->fc.nport); 454 }else{ 455 reg2 = fwphy_rddata(sc, FW_PHY_ESPD_REG); 456 sc->fc.mode |= FWPHYASYST; 457 sc->fc.nport = reg & FW_PHY_NP; 458 sc->fc.speed = (reg2 & FW_PHY_ESPD) >> 5; 459 if (sc->fc.speed > MAX_SPEED) { 460 device_printf(dev, "invalid speed %d (fixed to %d).\n", 461 sc->fc.speed, MAX_SPEED); 462 sc->fc.speed = MAX_SPEED; 463 } 464 device_printf(dev, 465 "Phy 1394a available %s, %d ports.\n", 466 linkspeed[sc->fc.speed], sc->fc.nport); 467 468 /* check programPhyEnable */ 469 reg2 = fwphy_rddata(sc, 5); 470#if 0 471 if (e1394a && (OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_PRPHY)) { 472#else /* XXX force to enable 1394a */ 473 if (e1394a) { 474#endif 475 if (firewire_debug) 476 device_printf(dev, 477 "Enable 1394a Enhancements\n"); 478 /* enable EAA EMC */ 479 reg2 |= 0x03; 480 /* set aPhyEnhanceEnable */ 481 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_PHYEN); 482 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_PRPHY); 483 } else { 484 /* for safe */ 485 reg2 &= ~0x83; 486 } 487 reg2 = fwphy_wrdata(sc, 5, reg2); 488 } 489 490 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 491 if((reg >> 5) == 7 ){ 492 reg = fwphy_rddata(sc, 4); 493 reg |= 1 << 6; 494 fwphy_wrdata(sc, 4, reg); 495 reg = fwphy_rddata(sc, 4); 496 } 497 return 0; 498} 499 500 501void 502fwohci_reset(struct fwohci_softc *sc, device_t dev) 503{ 504 int i, max_rec, speed; 505 uint32_t reg, reg2; 506 struct fwohcidb_tr *db_tr; 507 508 /* Disable interrupts */ 509 OWRITE(sc, FWOHCI_INTMASKCLR, ~0); 510 511 /* Now stopping all DMA channels */ 512 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 513 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 514 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 515 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 516 517 OWRITE(sc, OHCI_IR_MASKCLR, ~0); 518 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 519 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 520 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 521 } 522 523 /* FLUSH FIFO and reset Transmitter/Reciever */ 524 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 525 if (firewire_debug) 526 device_printf(dev, "resetting OHCI..."); 527 i = 0; 528 while(OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_RESET) { 529 if (i++ > 100) break; 530 DELAY(1000); 531 } 532 if (firewire_debug) 533 printf("done (loop=%d)\n", i); 534 535 /* Probe phy */ 536 fwohci_probe_phy(sc, dev); 537 538 /* Probe link */ 539 reg = OREAD(sc, OHCI_BUS_OPT); 540 reg2 = reg | OHCI_BUSFNC; 541 max_rec = (reg & 0x0000f000) >> 12; 542 speed = (reg & 0x00000007); 543 device_printf(dev, "Link %s, max_rec %d bytes.\n", 544 linkspeed[speed], MAXREC(max_rec)); 545 /* XXX fix max_rec */ 546 sc->fc.maxrec = sc->fc.speed + 8; 547 if (max_rec != sc->fc.maxrec) { 548 reg2 = (reg2 & 0xffff0fff) | (sc->fc.maxrec << 12); 549 device_printf(dev, "max_rec %d -> %d\n", 550 MAXREC(max_rec), MAXREC(sc->fc.maxrec)); 551 } 552 if (firewire_debug) 553 device_printf(dev, "BUS_OPT 0x%x -> 0x%x\n", reg, reg2); 554 OWRITE(sc, OHCI_BUS_OPT, reg2); 555 556 /* Initialize registers */ 557 OWRITE(sc, OHCI_CROMHDR, sc->fc.config_rom[0]); 558 OWRITE(sc, OHCI_CROMPTR, sc->crom_dma.bus_addr); 559 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_BIGEND); 560 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_POSTWR); 561 OWRITE(sc, OHCI_SID_BUF, sc->sid_dma.bus_addr); 562 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_SID); 563 564 /* Enable link */ 565 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LINKEN); 566 567 /* Force to start async RX DMA */ 568 sc->arrq.xferq.flag &= ~FWXFERQ_RUNNING; 569 sc->arrs.xferq.flag &= ~FWXFERQ_RUNNING; 570 fwohci_rx_enable(sc, &sc->arrq); 571 fwohci_rx_enable(sc, &sc->arrs); 572 573 /* Initialize async TX */ 574 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 575 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 576 577 /* AT Retries */ 578 OWRITE(sc, FWOHCI_RETRY, 579 /* CycleLimit PhyRespRetries ATRespRetries ATReqRetries */ 580 (0xffff << 16 ) | (0x0f << 8) | (0x0f << 4) | 0x0f) ; 581 582 sc->atrq.top = STAILQ_FIRST(&sc->atrq.db_trq); 583 sc->atrs.top = STAILQ_FIRST(&sc->atrs.db_trq); 584 sc->atrq.bottom = sc->atrq.top; 585 sc->atrs.bottom = sc->atrs.top; 586 587 for( i = 0, db_tr = sc->atrq.top; i < sc->atrq.ndb ; 588 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 589 db_tr->xfer = NULL; 590 } 591 for( i = 0, db_tr = sc->atrs.top; i < sc->atrs.ndb ; 592 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 593 db_tr->xfer = NULL; 594 } 595 596 597 /* Enable interrupts */ 598 sc->intmask = (OHCI_INT_ERR | OHCI_INT_PHY_SID 599 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 600 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 601 | OHCI_INT_PHY_BUS_R | OHCI_INT_PW_ERR); 602 sc->intmask |= OHCI_INT_DMA_IR | OHCI_INT_DMA_IT; 603 sc->intmask |= OHCI_INT_CYC_LOST | OHCI_INT_PHY_INT; 604 OWRITE(sc, FWOHCI_INTMASK, sc->intmask); 605 fwohci_set_intr(&sc->fc, 1); 606 607} 608 609int 610fwohci_init(struct fwohci_softc *sc, device_t dev) 611{ 612 int i, mver; 613 uint32_t reg; 614 uint8_t ui[8]; 615 616/* OHCI version */ 617 reg = OREAD(sc, OHCI_VERSION); 618 mver = (reg >> 16) & 0xff; 619 device_printf(dev, "OHCI version %x.%x (ROM=%d)\n", 620 mver, reg & 0xff, (reg>>24) & 1); 621 if (mver < 1 || mver > 9) { 622 device_printf(dev, "invalid OHCI version\n"); 623 return (ENXIO); 624 } 625 626/* Available Isochronous DMA channel probe */ 627 OWRITE(sc, OHCI_IT_MASK, 0xffffffff); 628 OWRITE(sc, OHCI_IR_MASK, 0xffffffff); 629 reg = OREAD(sc, OHCI_IT_MASK) & OREAD(sc, OHCI_IR_MASK); 630 OWRITE(sc, OHCI_IT_MASKCLR, 0xffffffff); 631 OWRITE(sc, OHCI_IR_MASKCLR, 0xffffffff); 632 for (i = 0; i < 0x20; i++) 633 if ((reg & (1 << i)) == 0) 634 break; 635 sc->fc.nisodma = i; 636 device_printf(dev, "No. of Isochronous channels is %d.\n", i); 637 if (i == 0) 638 return (ENXIO); 639 640 sc->fc.arq = &sc->arrq.xferq; 641 sc->fc.ars = &sc->arrs.xferq; 642 sc->fc.atq = &sc->atrq.xferq; 643 sc->fc.ats = &sc->atrs.xferq; 644 645 sc->arrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 646 sc->arrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 647 sc->atrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 648 sc->atrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 649 650 sc->arrq.xferq.start = NULL; 651 sc->arrs.xferq.start = NULL; 652 sc->atrq.xferq.start = fwohci_start_atq; 653 sc->atrs.xferq.start = fwohci_start_ats; 654 655 sc->arrq.xferq.buf = NULL; 656 sc->arrs.xferq.buf = NULL; 657 sc->atrq.xferq.buf = NULL; 658 sc->atrs.xferq.buf = NULL; 659 660 sc->arrq.xferq.dmach = -1; 661 sc->arrs.xferq.dmach = -1; 662 sc->atrq.xferq.dmach = -1; 663 sc->atrs.xferq.dmach = -1; 664 665 sc->arrq.ndesc = 1; 666 sc->arrs.ndesc = 1; 667 sc->atrq.ndesc = 8; /* equal to maximum of mbuf chains */ 668 sc->atrs.ndesc = 2; 669 670 sc->arrq.ndb = NDB; 671 sc->arrs.ndb = NDB / 2; 672 sc->atrq.ndb = NDB; 673 sc->atrs.ndb = NDB / 2; 674 675 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 676 sc->fc.it[i] = &sc->it[i].xferq; 677 sc->fc.ir[i] = &sc->ir[i].xferq; 678 sc->it[i].xferq.dmach = i; 679 sc->ir[i].xferq.dmach = i; 680 sc->it[i].ndb = 0; 681 sc->ir[i].ndb = 0; 682 } 683 684 sc->fc.tcode = tinfo; 685 sc->fc.dev = dev; 686 687 sc->fc.config_rom = fwdma_malloc(&sc->fc, CROMSIZE, CROMSIZE, 688 &sc->crom_dma, BUS_DMA_WAITOK | BUS_DMA_COHERENT); 689 if(sc->fc.config_rom == NULL){ 690 device_printf(dev, "config_rom alloc failed."); 691 return ENOMEM; 692 } 693 694#if 0 695 bzero(&sc->fc.config_rom[0], CROMSIZE); 696 sc->fc.config_rom[1] = 0x31333934; 697 sc->fc.config_rom[2] = 0xf000a002; 698 sc->fc.config_rom[3] = OREAD(sc, OHCI_EUID_HI); 699 sc->fc.config_rom[4] = OREAD(sc, OHCI_EUID_LO); 700 sc->fc.config_rom[5] = 0; 701 sc->fc.config_rom[0] = (4 << 24) | (5 << 16); 702 703 sc->fc.config_rom[0] |= fw_crc16(&sc->fc.config_rom[1], 5*4); 704#endif 705 706 707/* SID recieve buffer must align 2^11 */ 708#define OHCI_SIDSIZE (1 << 11) 709 sc->sid_buf = fwdma_malloc(&sc->fc, OHCI_SIDSIZE, OHCI_SIDSIZE, 710 &sc->sid_dma, BUS_DMA_WAITOK | BUS_DMA_COHERENT); 711 if (sc->sid_buf == NULL) { 712 device_printf(dev, "sid_buf alloc failed."); 713 return ENOMEM; 714 } 715 716 fwdma_malloc(&sc->fc, sizeof(uint32_t), sizeof(uint32_t), 717 &sc->dummy_dma, BUS_DMA_WAITOK); 718 719 if (sc->dummy_dma.v_addr == NULL) { 720 device_printf(dev, "dummy_dma alloc failed."); 721 return ENOMEM; 722 } 723 724 fwohci_db_init(sc, &sc->arrq); 725 if ((sc->arrq.flags & FWOHCI_DBCH_INIT) == 0) 726 return ENOMEM; 727 728 fwohci_db_init(sc, &sc->arrs); 729 if ((sc->arrs.flags & FWOHCI_DBCH_INIT) == 0) 730 return ENOMEM; 731 732 fwohci_db_init(sc, &sc->atrq); 733 if ((sc->atrq.flags & FWOHCI_DBCH_INIT) == 0) 734 return ENOMEM; 735 736 fwohci_db_init(sc, &sc->atrs); 737 if ((sc->atrs.flags & FWOHCI_DBCH_INIT) == 0) 738 return ENOMEM; 739 740 sc->fc.eui.hi = OREAD(sc, FWOHCIGUID_H); 741 sc->fc.eui.lo = OREAD(sc, FWOHCIGUID_L); 742 for( i = 0 ; i < 8 ; i ++) 743 ui[i] = FW_EUI64_BYTE(&sc->fc.eui,i); 744 device_printf(dev, "EUI64 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", 745 ui[0], ui[1], ui[2], ui[3], ui[4], ui[5], ui[6], ui[7]); 746 747 sc->fc.ioctl = fwohci_ioctl; 748 sc->fc.cyctimer = fwohci_cyctimer; 749 sc->fc.set_bmr = fwohci_set_bus_manager; 750 sc->fc.ibr = fwohci_ibr; 751 sc->fc.irx_enable = fwohci_irx_enable; 752 sc->fc.irx_disable = fwohci_irx_disable; 753 754 sc->fc.itx_enable = fwohci_itxbuf_enable; 755 sc->fc.itx_disable = fwohci_itx_disable; 756#if BYTE_ORDER == BIG_ENDIAN 757 sc->fc.irx_post = fwohci_irx_post; 758#else 759 sc->fc.irx_post = NULL; 760#endif 761 sc->fc.itx_post = NULL; 762 sc->fc.timeout = fwohci_timeout; 763 sc->fc.poll = fwohci_poll; 764 sc->fc.set_intr = fwohci_set_intr; 765 766 sc->intmask = sc->irstat = sc->itstat = 0; 767 768 /* Init task queue */ 769 sc->fc.taskqueue = taskqueue_create_fast("fw_taskq", M_WAITOK, 770 taskqueue_thread_enqueue, &sc->fc.taskqueue); 771 taskqueue_start_threads(&sc->fc.taskqueue, 1, PI_NET, "fw%d_taskq", 772 device_get_unit(dev)); 773 TASK_INIT(&sc->fwohci_task_busreset, 2, fwohci_task_busreset, sc); 774 TASK_INIT(&sc->fwohci_task_sid, 1, fwohci_task_sid, sc); 775 TASK_INIT(&sc->fwohci_task_dma, 0, fwohci_task_dma, sc); 776 777 fw_init(&sc->fc); 778 fwohci_reset(sc, dev); 779 780 return 0; 781} 782 783void 784fwohci_timeout(void *arg) 785{ 786 struct fwohci_softc *sc; 787 788 sc = (struct fwohci_softc *)arg; 789} 790 791uint32_t 792fwohci_cyctimer(struct firewire_comm *fc) 793{ 794 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 795 return(OREAD(sc, OHCI_CYCLETIMER)); 796} 797 798int 799fwohci_detach(struct fwohci_softc *sc, device_t dev) 800{ 801 int i; 802 803 if (sc->sid_buf != NULL) 804 fwdma_free(&sc->fc, &sc->sid_dma); 805 if (sc->fc.config_rom != NULL) 806 fwdma_free(&sc->fc, &sc->crom_dma); 807 808 fwohci_db_free(&sc->arrq); 809 fwohci_db_free(&sc->arrs); 810 811 fwohci_db_free(&sc->atrq); 812 fwohci_db_free(&sc->atrs); 813 814 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 815 fwohci_db_free(&sc->it[i]); 816 fwohci_db_free(&sc->ir[i]); 817 } 818 if (sc->fc.taskqueue != NULL) { 819 taskqueue_drain(sc->fc.taskqueue, &sc->fwohci_task_busreset); 820 taskqueue_drain(sc->fc.taskqueue, &sc->fwohci_task_sid); 821 taskqueue_drain(sc->fc.taskqueue, &sc->fwohci_task_dma); 822 taskqueue_drain(sc->fc.taskqueue, &sc->fc.task_timeout); 823 taskqueue_free(sc->fc.taskqueue); 824 sc->fc.taskqueue = NULL; 825 } 826 827 return 0; 828} 829 830#define LAST_DB(dbtr, db) do { \ 831 struct fwohcidb_tr *_dbtr = (dbtr); \ 832 int _cnt = _dbtr->dbcnt; \ 833 db = &_dbtr->db[ (_cnt > 2) ? (_cnt -1) : 0]; \ 834} while (0) 835 836static void 837fwohci_execute_db(void *arg, bus_dma_segment_t *segs, int nseg, int error) 838{ 839 struct fwohcidb_tr *db_tr; 840 struct fwohcidb *db; 841 bus_dma_segment_t *s; 842 int i; 843 844 db_tr = (struct fwohcidb_tr *)arg; 845 db = &db_tr->db[db_tr->dbcnt]; 846 if (error) { 847 if (firewire_debug || error != EFBIG) 848 printf("fwohci_execute_db: error=%d\n", error); 849 return; 850 } 851 for (i = 0; i < nseg; i++) { 852 s = &segs[i]; 853 FWOHCI_DMA_WRITE(db->db.desc.addr, s->ds_addr); 854 FWOHCI_DMA_WRITE(db->db.desc.cmd, s->ds_len); 855 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 856 db++; 857 db_tr->dbcnt++; 858 } 859} 860 861static void 862fwohci_execute_db2(void *arg, bus_dma_segment_t *segs, int nseg, 863 bus_size_t size, int error) 864{ 865 fwohci_execute_db(arg, segs, nseg, error); 866} 867 868static void 869fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 870{ 871 int i, s; 872 int tcode, hdr_len, pl_off; 873 int fsegment = -1; 874 uint32_t off; 875 struct fw_xfer *xfer; 876 struct fw_pkt *fp; 877 struct fwohci_txpkthdr *ohcifp; 878 struct fwohcidb_tr *db_tr; 879 struct fwohcidb *db; 880 uint32_t *ld; 881 struct tcode_info *info; 882 static int maxdesc=0; 883 884 FW_GLOCK_ASSERT(&sc->fc); 885 886 if(&sc->atrq == dbch){ 887 off = OHCI_ATQOFF; 888 }else if(&sc->atrs == dbch){ 889 off = OHCI_ATSOFF; 890 }else{ 891 return; 892 } 893 894 if (dbch->flags & FWOHCI_DBCH_FULL) 895 return; 896 897 s = splfw(); 898 db_tr = dbch->top; 899txloop: 900 xfer = STAILQ_FIRST(&dbch->xferq.q); 901 if(xfer == NULL){ 902 goto kick; 903 } 904#if 0 905 if(dbch->xferq.queued == 0 ){ 906 device_printf(sc->fc.dev, "TX queue empty\n"); 907 } 908#endif 909 STAILQ_REMOVE_HEAD(&dbch->xferq.q, link); 910 db_tr->xfer = xfer; 911 xfer->flag = FWXF_START; 912 913 fp = &xfer->send.hdr; 914 tcode = fp->mode.common.tcode; 915 916 ohcifp = (struct fwohci_txpkthdr *) db_tr->db[1].db.immed; 917 info = &tinfo[tcode]; 918 hdr_len = pl_off = info->hdr_len; 919 920 ld = &ohcifp->mode.ld[0]; 921 ld[0] = ld[1] = ld[2] = ld[3] = 0; 922 for( i = 0 ; i < pl_off ; i+= 4) 923 ld[i/4] = fp->mode.ld[i/4]; 924 925 ohcifp->mode.common.spd = xfer->send.spd & 0x7; 926 if (tcode == FWTCODE_STREAM ){ 927 hdr_len = 8; 928 ohcifp->mode.stream.len = fp->mode.stream.len; 929 } else if (tcode == FWTCODE_PHY) { 930 hdr_len = 12; 931 ld[1] = fp->mode.ld[1]; 932 ld[2] = fp->mode.ld[2]; 933 ohcifp->mode.common.spd = 0; 934 ohcifp->mode.common.tcode = FWOHCITCODE_PHY; 935 } else { 936 ohcifp->mode.asycomm.dst = fp->mode.hdr.dst; 937 ohcifp->mode.asycomm.srcbus = OHCI_ASYSRCBUS; 938 ohcifp->mode.asycomm.tlrt |= FWRETRY_X; 939 } 940 db = &db_tr->db[0]; 941 FWOHCI_DMA_WRITE(db->db.desc.cmd, 942 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | hdr_len); 943 FWOHCI_DMA_WRITE(db->db.desc.addr, 0); 944 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 945/* Specify bound timer of asy. responce */ 946 if(&sc->atrs == dbch){ 947 FWOHCI_DMA_WRITE(db->db.desc.res, 948 (OREAD(sc, OHCI_CYCLETIMER) >> 12) + (1 << 13)); 949 } 950#if BYTE_ORDER == BIG_ENDIAN 951 if (tcode == FWTCODE_WREQQ || tcode == FWTCODE_RRESQ) 952 hdr_len = 12; 953 for (i = 0; i < hdr_len/4; i ++) 954 FWOHCI_DMA_WRITE(ld[i], ld[i]); 955#endif 956 957again: 958 db_tr->dbcnt = 2; 959 db = &db_tr->db[db_tr->dbcnt]; 960 if (xfer->send.pay_len > 0) { 961 int err; 962 /* handle payload */ 963 if (xfer->mbuf == NULL) { 964 err = bus_dmamap_load(dbch->dmat, db_tr->dma_map, 965 &xfer->send.payload[0], xfer->send.pay_len, 966 fwohci_execute_db, db_tr, 967 /*flags*/0); 968 } else { 969 /* XXX we can handle only 6 (=8-2) mbuf chains */ 970 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 971 xfer->mbuf, 972 fwohci_execute_db2, db_tr, 973 /* flags */0); 974 if (err == EFBIG) { 975 struct mbuf *m0; 976 977 if (firewire_debug) 978 device_printf(sc->fc.dev, "EFBIG.\n"); 979 m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 980 if (m0 != NULL) { 981 m_copydata(xfer->mbuf, 0, 982 xfer->mbuf->m_pkthdr.len, 983 mtod(m0, caddr_t)); 984 m0->m_len = m0->m_pkthdr.len = 985 xfer->mbuf->m_pkthdr.len; 986 m_freem(xfer->mbuf); 987 xfer->mbuf = m0; 988 goto again; 989 } 990 device_printf(sc->fc.dev, "m_getcl failed.\n"); 991 } 992 } 993 if (err) 994 printf("dmamap_load: err=%d\n", err); 995 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 996 BUS_DMASYNC_PREWRITE); 997#if 0 /* OHCI_OUTPUT_MODE == 0 */ 998 for (i = 2; i < db_tr->dbcnt; i++) 999 FWOHCI_DMA_SET(db_tr->db[i].db.desc.cmd, 1000 OHCI_OUTPUT_MORE); 1001#endif 1002 } 1003 if (maxdesc < db_tr->dbcnt) { 1004 maxdesc = db_tr->dbcnt; 1005 if (firewire_debug) 1006 device_printf(sc->fc.dev, "%s: maxdesc %d\n", __func__, maxdesc); 1007 } 1008 /* last db */ 1009 LAST_DB(db_tr, db); 1010 FWOHCI_DMA_SET(db->db.desc.cmd, 1011 OHCI_OUTPUT_LAST | OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 1012 FWOHCI_DMA_WRITE(db->db.desc.depend, 1013 STAILQ_NEXT(db_tr, link)->bus_addr); 1014 1015 if(fsegment == -1 ) 1016 fsegment = db_tr->dbcnt; 1017 if (dbch->pdb_tr != NULL) { 1018 LAST_DB(dbch->pdb_tr, db); 1019 FWOHCI_DMA_SET(db->db.desc.depend, db_tr->dbcnt); 1020 } 1021 dbch->xferq.queued ++; 1022 dbch->pdb_tr = db_tr; 1023 db_tr = STAILQ_NEXT(db_tr, link); 1024 if(db_tr != dbch->bottom){ 1025 goto txloop; 1026 } else { 1027 device_printf(sc->fc.dev, "fwohci_start: lack of db_trq\n"); 1028 dbch->flags |= FWOHCI_DBCH_FULL; 1029 } 1030kick: 1031 /* kick asy q */ 1032 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1033 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1034 1035 if(dbch->xferq.flag & FWXFERQ_RUNNING) { 1036 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 1037 } else { 1038 if (firewire_debug) 1039 device_printf(sc->fc.dev, "start AT DMA status=%x\n", 1040 OREAD(sc, OHCI_DMACTL(off))); 1041 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | fsegment); 1042 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 1043 dbch->xferq.flag |= FWXFERQ_RUNNING; 1044 } 1045 1046 dbch->top = db_tr; 1047 splx(s); 1048 return; 1049} 1050 1051static void 1052fwohci_start_atq(struct firewire_comm *fc) 1053{ 1054 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1055 FW_GLOCK(&sc->fc); 1056 fwohci_start( sc, &(sc->atrq)); 1057 FW_GUNLOCK(&sc->fc); 1058 return; 1059} 1060 1061static void 1062fwohci_start_ats(struct firewire_comm *fc) 1063{ 1064 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1065 FW_GLOCK(&sc->fc); 1066 fwohci_start( sc, &(sc->atrs)); 1067 FW_GUNLOCK(&sc->fc); 1068 return; 1069} 1070 1071void 1072fwohci_txd(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1073{ 1074 int s, ch, err = 0; 1075 struct fwohcidb_tr *tr; 1076 struct fwohcidb *db; 1077 struct fw_xfer *xfer; 1078 uint32_t off; 1079 u_int stat, status; 1080 int packets; 1081 struct firewire_comm *fc = (struct firewire_comm *)sc; 1082 1083 if(&sc->atrq == dbch){ 1084 off = OHCI_ATQOFF; 1085 ch = ATRQ_CH; 1086 }else if(&sc->atrs == dbch){ 1087 off = OHCI_ATSOFF; 1088 ch = ATRS_CH; 1089 }else{ 1090 return; 1091 } 1092 s = splfw(); 1093 tr = dbch->bottom; 1094 packets = 0; 1095 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 1096 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 1097 while(dbch->xferq.queued > 0){ 1098 LAST_DB(tr, db); 1099 status = FWOHCI_DMA_READ(db->db.desc.res) >> OHCI_STATUS_SHIFT; 1100 if(!(status & OHCI_CNTL_DMA_ACTIVE)){ 1101 if (fc->status != FWBUSINIT) 1102 /* maybe out of order?? */ 1103 goto out; 1104 } 1105 bus_dmamap_sync(dbch->dmat, tr->dma_map, 1106 BUS_DMASYNC_POSTWRITE); 1107 bus_dmamap_unload(dbch->dmat, tr->dma_map); 1108#if 1 1109 if (firewire_debug > 1) 1110 dump_db(sc, ch); 1111#endif 1112 if(status & OHCI_CNTL_DMA_DEAD) { 1113 /* Stop DMA */ 1114 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1115 device_printf(sc->fc.dev, "force reset AT FIFO\n"); 1116 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_LINKEN); 1117 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS | OHCI_HCC_LINKEN); 1118 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1119 } 1120 stat = status & FWOHCIEV_MASK; 1121 switch(stat){ 1122 case FWOHCIEV_ACKPEND: 1123 case FWOHCIEV_ACKCOMPL: 1124 err = 0; 1125 break; 1126 case FWOHCIEV_ACKBSA: 1127 case FWOHCIEV_ACKBSB: 1128 case FWOHCIEV_ACKBSX: 1129 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1130 err = EBUSY; 1131 break; 1132 case FWOHCIEV_FLUSHED: 1133 case FWOHCIEV_ACKTARD: 1134 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1135 err = EAGAIN; 1136 break; 1137 case FWOHCIEV_MISSACK: 1138 case FWOHCIEV_UNDRRUN: 1139 case FWOHCIEV_OVRRUN: 1140 case FWOHCIEV_DESCERR: 1141 case FWOHCIEV_DTRDERR: 1142 case FWOHCIEV_TIMEOUT: 1143 case FWOHCIEV_TCODERR: 1144 case FWOHCIEV_UNKNOWN: 1145 case FWOHCIEV_ACKDERR: 1146 case FWOHCIEV_ACKTERR: 1147 default: 1148 device_printf(sc->fc.dev, "txd err=%2x %s\n", 1149 stat, fwohcicode[stat]); 1150 err = EINVAL; 1151 break; 1152 } 1153 if (tr->xfer != NULL) { 1154 xfer = tr->xfer; 1155 if (xfer->flag & FWXF_RCVD) { 1156#if 0 1157 if (firewire_debug) 1158 printf("already rcvd\n"); 1159#endif 1160 fw_xfer_done(xfer); 1161 } else { 1162 microtime(&xfer->tv); 1163 xfer->flag = FWXF_SENT; 1164 if (err == EBUSY) { 1165 xfer->flag = FWXF_BUSY; 1166 xfer->resp = err; 1167 xfer->recv.pay_len = 0; 1168 fw_xfer_done(xfer); 1169 } else if (stat != FWOHCIEV_ACKPEND) { 1170 if (stat != FWOHCIEV_ACKCOMPL) 1171 xfer->flag = FWXF_SENTERR; 1172 xfer->resp = err; 1173 xfer->recv.pay_len = 0; 1174 fw_xfer_done(xfer); 1175 } 1176 } 1177 /* 1178 * The watchdog timer takes care of split 1179 * transcation timeout for ACKPEND case. 1180 */ 1181 } else { 1182 printf("this shouldn't happen\n"); 1183 } 1184 FW_GLOCK(fc); 1185 dbch->xferq.queued --; 1186 FW_GUNLOCK(fc); 1187 tr->xfer = NULL; 1188 1189 packets ++; 1190 tr = STAILQ_NEXT(tr, link); 1191 dbch->bottom = tr; 1192 if (dbch->bottom == dbch->top) { 1193 /* we reaches the end of context program */ 1194 if (firewire_debug && dbch->xferq.queued > 0) 1195 printf("queued > 0\n"); 1196 break; 1197 } 1198 } 1199out: 1200 if ((dbch->flags & FWOHCI_DBCH_FULL) && packets > 0) { 1201 printf("make free slot\n"); 1202 dbch->flags &= ~FWOHCI_DBCH_FULL; 1203 FW_GLOCK(fc); 1204 fwohci_start(sc, dbch); 1205 FW_GUNLOCK(fc); 1206 } 1207 splx(s); 1208} 1209 1210static void 1211fwohci_db_free(struct fwohci_dbch *dbch) 1212{ 1213 struct fwohcidb_tr *db_tr; 1214 int idb; 1215 1216 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1217 return; 1218 1219 for(db_tr = STAILQ_FIRST(&dbch->db_trq), idb = 0; idb < dbch->ndb; 1220 db_tr = STAILQ_NEXT(db_tr, link), idb++){ 1221 if ((dbch->xferq.flag & FWXFERQ_EXTBUF) == 0 && 1222 db_tr->buf != NULL) { 1223 fwdma_free_size(dbch->dmat, db_tr->dma_map, 1224 db_tr->buf, dbch->xferq.psize); 1225 db_tr->buf = NULL; 1226 } else if (db_tr->dma_map != NULL) 1227 bus_dmamap_destroy(dbch->dmat, db_tr->dma_map); 1228 } 1229 dbch->ndb = 0; 1230 db_tr = STAILQ_FIRST(&dbch->db_trq); 1231 fwdma_free_multiseg(dbch->am); 1232 free(db_tr, M_FW); 1233 STAILQ_INIT(&dbch->db_trq); 1234 dbch->flags &= ~FWOHCI_DBCH_INIT; 1235} 1236 1237static void 1238fwohci_db_init(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1239{ 1240 int idb; 1241 struct fwohcidb_tr *db_tr; 1242 1243 if ((dbch->flags & FWOHCI_DBCH_INIT) != 0) 1244 goto out; 1245 1246 /* create dma_tag for buffers */ 1247#define MAX_REQCOUNT 0xffff 1248 if (bus_dma_tag_create(/*parent*/ sc->fc.dmat, 1249 /*alignment*/ 1, /*boundary*/ 0, 1250 /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 1251 /*highaddr*/ BUS_SPACE_MAXADDR, 1252 /*filter*/NULL, /*filterarg*/NULL, 1253 /*maxsize*/ dbch->xferq.psize, 1254 /*nsegments*/ dbch->ndesc > 3 ? dbch->ndesc - 2 : 1, 1255 /*maxsegsz*/ MAX_REQCOUNT, 1256 /*flags*/ 0, 1257#if defined(__FreeBSD__) && __FreeBSD_version >= 501102 1258 /*lockfunc*/busdma_lock_mutex, 1259 /*lockarg*/FW_GMTX(&sc->fc), 1260#endif 1261 &dbch->dmat)) 1262 return; 1263 1264 /* allocate DB entries and attach one to each DMA channels */ 1265 /* DB entry must start at 16 bytes bounary. */ 1266 STAILQ_INIT(&dbch->db_trq); 1267 db_tr = (struct fwohcidb_tr *) 1268 malloc(sizeof(struct fwohcidb_tr) * dbch->ndb, 1269 M_FW, M_WAITOK | M_ZERO); 1270 if(db_tr == NULL){ 1271 printf("fwohci_db_init: malloc(1) failed\n"); 1272 return; 1273 } 1274 1275#define DB_SIZE(x) (sizeof(struct fwohcidb) * (x)->ndesc) 1276 dbch->am = fwdma_malloc_multiseg(&sc->fc, DB_SIZE(dbch), 1277 DB_SIZE(dbch), dbch->ndb, BUS_DMA_WAITOK); 1278 if (dbch->am == NULL) { 1279 printf("fwohci_db_init: fwdma_malloc_multiseg failed\n"); 1280 free(db_tr, M_FW); 1281 return; 1282 } 1283 /* Attach DB to DMA ch. */ 1284 for(idb = 0 ; idb < dbch->ndb ; idb++){ 1285 db_tr->dbcnt = 0; 1286 db_tr->db = (struct fwohcidb *)fwdma_v_addr(dbch->am, idb); 1287 db_tr->bus_addr = fwdma_bus_addr(dbch->am, idb); 1288 /* create dmamap for buffers */ 1289 /* XXX do we need 4bytes alignment tag? */ 1290 /* XXX don't alloc dma_map for AR */ 1291 if (bus_dmamap_create(dbch->dmat, 0, &db_tr->dma_map) != 0) { 1292 printf("bus_dmamap_create failed\n"); 1293 dbch->flags = FWOHCI_DBCH_INIT; /* XXX fake */ 1294 fwohci_db_free(dbch); 1295 return; 1296 } 1297 STAILQ_INSERT_TAIL(&dbch->db_trq, db_tr, link); 1298 if (dbch->xferq.flag & FWXFERQ_EXTBUF) { 1299 if (idb % dbch->xferq.bnpacket == 0) 1300 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1301 ].start = (caddr_t)db_tr; 1302 if ((idb + 1) % dbch->xferq.bnpacket == 0) 1303 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1304 ].end = (caddr_t)db_tr; 1305 } 1306 db_tr++; 1307 } 1308 STAILQ_LAST(&dbch->db_trq, fwohcidb_tr,link)->link.stqe_next 1309 = STAILQ_FIRST(&dbch->db_trq); 1310out: 1311 dbch->xferq.queued = 0; 1312 dbch->pdb_tr = NULL; 1313 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1314 dbch->bottom = dbch->top; 1315 dbch->flags = FWOHCI_DBCH_INIT; 1316} 1317 1318static int 1319fwohci_itx_disable(struct firewire_comm *fc, int dmach) 1320{ 1321 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1322 1323 OWRITE(sc, OHCI_ITCTLCLR(dmach), 1324 OHCI_CNTL_DMA_RUN | OHCI_CNTL_CYCMATCH_S); 1325 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1326 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1327 /* XXX we cannot free buffers until the DMA really stops */ 1328 pause("fwitxd", hz); 1329 fwohci_db_free(&sc->it[dmach]); 1330 sc->it[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1331 return 0; 1332} 1333 1334static int 1335fwohci_irx_disable(struct firewire_comm *fc, int dmach) 1336{ 1337 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1338 1339 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1340 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1341 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1342 /* XXX we cannot free buffers until the DMA really stops */ 1343 pause("fwirxd", hz); 1344 fwohci_db_free(&sc->ir[dmach]); 1345 sc->ir[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1346 return 0; 1347} 1348 1349#if BYTE_ORDER == BIG_ENDIAN 1350static void 1351fwohci_irx_post (struct firewire_comm *fc , uint32_t *qld) 1352{ 1353 qld[0] = FWOHCI_DMA_READ(qld[0]); 1354 return; 1355} 1356#endif 1357 1358static int 1359fwohci_tx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1360{ 1361 int err = 0; 1362 int idb, z, i, dmach = 0, ldesc; 1363 uint32_t off = 0; 1364 struct fwohcidb_tr *db_tr; 1365 struct fwohcidb *db; 1366 1367 if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){ 1368 err = EINVAL; 1369 return err; 1370 } 1371 z = dbch->ndesc; 1372 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1373 if( &sc->it[dmach] == dbch){ 1374 off = OHCI_ITOFF(dmach); 1375 break; 1376 } 1377 } 1378 if(off == 0){ 1379 err = EINVAL; 1380 return err; 1381 } 1382 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1383 return err; 1384 dbch->xferq.flag |= FWXFERQ_RUNNING; 1385 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1386 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1387 } 1388 db_tr = dbch->top; 1389 for (idb = 0; idb < dbch->ndb; idb ++) { 1390 fwohci_add_tx_buf(dbch, db_tr, idb); 1391 if(STAILQ_NEXT(db_tr, link) == NULL){ 1392 break; 1393 } 1394 db = db_tr->db; 1395 ldesc = db_tr->dbcnt - 1; 1396 FWOHCI_DMA_WRITE(db[0].db.desc.depend, 1397 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1398 db[ldesc].db.desc.depend = db[0].db.desc.depend; 1399 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1400 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1401 FWOHCI_DMA_SET( 1402 db[ldesc].db.desc.cmd, 1403 OHCI_INTERRUPT_ALWAYS); 1404 /* OHCI 1.1 and above */ 1405 FWOHCI_DMA_SET( 1406 db[0].db.desc.cmd, 1407 OHCI_INTERRUPT_ALWAYS); 1408 } 1409 } 1410 db_tr = STAILQ_NEXT(db_tr, link); 1411 } 1412 FWOHCI_DMA_CLEAR( 1413 dbch->bottom->db[dbch->bottom->dbcnt - 1].db.desc.depend, 0xf); 1414 return err; 1415} 1416 1417static int 1418fwohci_rx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1419{ 1420 int err = 0; 1421 int idb, z, i, dmach = 0, ldesc; 1422 uint32_t off = 0; 1423 struct fwohcidb_tr *db_tr; 1424 struct fwohcidb *db; 1425 1426 z = dbch->ndesc; 1427 if(&sc->arrq == dbch){ 1428 off = OHCI_ARQOFF; 1429 }else if(&sc->arrs == dbch){ 1430 off = OHCI_ARSOFF; 1431 }else{ 1432 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1433 if( &sc->ir[dmach] == dbch){ 1434 off = OHCI_IROFF(dmach); 1435 break; 1436 } 1437 } 1438 } 1439 if(off == 0){ 1440 err = EINVAL; 1441 return err; 1442 } 1443 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1444 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1445 return err; 1446 }else{ 1447 if(dbch->xferq.flag & FWXFERQ_RUNNING){ 1448 err = EBUSY; 1449 return err; 1450 } 1451 } 1452 dbch->xferq.flag |= FWXFERQ_RUNNING; 1453 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1454 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1455 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1456 } 1457 db_tr = dbch->top; 1458 for (idb = 0; idb < dbch->ndb; idb ++) { 1459 fwohci_add_rx_buf(dbch, db_tr, idb, &sc->dummy_dma); 1460 if (STAILQ_NEXT(db_tr, link) == NULL) 1461 break; 1462 db = db_tr->db; 1463 ldesc = db_tr->dbcnt - 1; 1464 FWOHCI_DMA_WRITE(db[ldesc].db.desc.depend, 1465 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1466 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1467 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1468 FWOHCI_DMA_SET( 1469 db[ldesc].db.desc.cmd, 1470 OHCI_INTERRUPT_ALWAYS); 1471 FWOHCI_DMA_CLEAR( 1472 db[ldesc].db.desc.depend, 1473 0xf); 1474 } 1475 } 1476 db_tr = STAILQ_NEXT(db_tr, link); 1477 } 1478 FWOHCI_DMA_CLEAR( 1479 dbch->bottom->db[db_tr->dbcnt - 1].db.desc.depend, 0xf); 1480 dbch->buf_offset = 0; 1481 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1482 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1483 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1484 return err; 1485 }else{ 1486 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | z); 1487 } 1488 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 1489 return err; 1490} 1491 1492static int 1493fwohci_next_cycle(struct firewire_comm *fc, int cycle_now) 1494{ 1495 int sec, cycle, cycle_match; 1496 1497 cycle = cycle_now & 0x1fff; 1498 sec = cycle_now >> 13; 1499#define CYCLE_MOD 0x10 1500#if 1 1501#define CYCLE_DELAY 8 /* min delay to start DMA */ 1502#else 1503#define CYCLE_DELAY 7000 /* min delay to start DMA */ 1504#endif 1505 cycle = cycle + CYCLE_DELAY; 1506 if (cycle >= 8000) { 1507 sec ++; 1508 cycle -= 8000; 1509 } 1510 cycle = roundup2(cycle, CYCLE_MOD); 1511 if (cycle >= 8000) { 1512 sec ++; 1513 if (cycle == 8000) 1514 cycle = 0; 1515 else 1516 cycle = CYCLE_MOD; 1517 } 1518 cycle_match = ((sec << 13) | cycle) & 0x7ffff; 1519 1520 return(cycle_match); 1521} 1522 1523static int 1524fwohci_itxbuf_enable(struct firewire_comm *fc, int dmach) 1525{ 1526 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1527 int err = 0; 1528 unsigned short tag, ich; 1529 struct fwohci_dbch *dbch; 1530 int cycle_match, cycle_now, s, ldesc; 1531 uint32_t stat; 1532 struct fw_bulkxfer *first, *chunk, *prev; 1533 struct fw_xferq *it; 1534 1535 dbch = &sc->it[dmach]; 1536 it = &dbch->xferq; 1537 1538 tag = (it->flag >> 6) & 3; 1539 ich = it->flag & 0x3f; 1540 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) { 1541 dbch->ndb = it->bnpacket * it->bnchunk; 1542 dbch->ndesc = 3; 1543 fwohci_db_init(sc, dbch); 1544 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1545 return ENOMEM; 1546 1547 err = fwohci_tx_enable(sc, dbch); 1548 } 1549 if(err) 1550 return err; 1551 1552 ldesc = dbch->ndesc - 1; 1553 s = splfw(); 1554 FW_GLOCK(fc); 1555 prev = STAILQ_LAST(&it->stdma, fw_bulkxfer, link); 1556 while ((chunk = STAILQ_FIRST(&it->stvalid)) != NULL) { 1557 struct fwohcidb *db; 1558 1559 fwdma_sync_multiseg(it->buf, chunk->poffset, it->bnpacket, 1560 BUS_DMASYNC_PREWRITE); 1561 fwohci_txbufdb(sc, dmach, chunk); 1562 if (prev != NULL) { 1563 db = ((struct fwohcidb_tr *)(prev->end))->db; 1564#if 0 /* XXX necessary? */ 1565 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, 1566 OHCI_BRANCH_ALWAYS); 1567#endif 1568#if 0 /* if bulkxfer->npacket changes */ 1569 db[ldesc].db.desc.depend = db[0].db.desc.depend = 1570 ((struct fwohcidb_tr *) 1571 (chunk->start))->bus_addr | dbch->ndesc; 1572#else 1573 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 1574 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1575#endif 1576 } 1577 STAILQ_REMOVE_HEAD(&it->stvalid, link); 1578 STAILQ_INSERT_TAIL(&it->stdma, chunk, link); 1579 prev = chunk; 1580 } 1581 FW_GUNLOCK(fc); 1582 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1583 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1584 splx(s); 1585 stat = OREAD(sc, OHCI_ITCTL(dmach)); 1586 if (firewire_debug && (stat & OHCI_CNTL_CYCMATCH_S)) 1587 printf("stat 0x%x\n", stat); 1588 1589 if (stat & (OHCI_CNTL_DMA_ACTIVE | OHCI_CNTL_CYCMATCH_S)) 1590 return 0; 1591 1592#if 0 1593 OWRITE(sc, OHCI_ITCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1594#endif 1595 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1596 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1597 OWRITE(sc, OHCI_IT_MASK, 1 << dmach); 1598 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IT); 1599 1600 first = STAILQ_FIRST(&it->stdma); 1601 OWRITE(sc, OHCI_ITCMD(dmach), 1602 ((struct fwohcidb_tr *)(first->start))->bus_addr | dbch->ndesc); 1603 if (firewire_debug > 1) { 1604 printf("fwohci_itxbuf_enable: kick 0x%08x\n", stat); 1605#if 1 1606 dump_dma(sc, ITX_CH + dmach); 1607#endif 1608 } 1609 if ((stat & OHCI_CNTL_DMA_RUN) == 0) { 1610#if 1 1611 /* Don't start until all chunks are buffered */ 1612 if (STAILQ_FIRST(&it->stfree) != NULL) 1613 goto out; 1614#endif 1615#if 1 1616 /* Clear cycle match counter bits */ 1617 OWRITE(sc, OHCI_ITCTLCLR(dmach), 0xffff0000); 1618 1619 /* 2bit second + 13bit cycle */ 1620 cycle_now = (fc->cyctimer(fc) >> 12) & 0x7fff; 1621 cycle_match = fwohci_next_cycle(fc, cycle_now); 1622 1623 OWRITE(sc, OHCI_ITCTL(dmach), 1624 OHCI_CNTL_CYCMATCH_S | (cycle_match << 16) 1625 | OHCI_CNTL_DMA_RUN); 1626#else 1627 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_RUN); 1628#endif 1629 if (firewire_debug > 1) { 1630 printf("cycle_match: 0x%04x->0x%04x\n", 1631 cycle_now, cycle_match); 1632 dump_dma(sc, ITX_CH + dmach); 1633 dump_db(sc, ITX_CH + dmach); 1634 } 1635 } else if ((stat & OHCI_CNTL_CYCMATCH_S) == 0) { 1636 device_printf(sc->fc.dev, 1637 "IT DMA underrun (0x%08x)\n", stat); 1638 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_WAKE); 1639 } 1640out: 1641 return err; 1642} 1643 1644static int 1645fwohci_irx_enable(struct firewire_comm *fc, int dmach) 1646{ 1647 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1648 int err = 0, s, ldesc; 1649 unsigned short tag, ich; 1650 uint32_t stat; 1651 struct fwohci_dbch *dbch; 1652 struct fwohcidb_tr *db_tr; 1653 struct fw_bulkxfer *first, *prev, *chunk; 1654 struct fw_xferq *ir; 1655 1656 dbch = &sc->ir[dmach]; 1657 ir = &dbch->xferq; 1658 1659 if ((ir->flag & FWXFERQ_RUNNING) == 0) { 1660 tag = (ir->flag >> 6) & 3; 1661 ich = ir->flag & 0x3f; 1662 OWRITE(sc, OHCI_IRMATCH(dmach), tagbit[tag] | ich); 1663 1664 ir->queued = 0; 1665 dbch->ndb = ir->bnpacket * ir->bnchunk; 1666 dbch->ndesc = 2; 1667 fwohci_db_init(sc, dbch); 1668 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1669 return ENOMEM; 1670 err = fwohci_rx_enable(sc, dbch); 1671 } 1672 if(err) 1673 return err; 1674 1675 first = STAILQ_FIRST(&ir->stfree); 1676 if (first == NULL) { 1677 device_printf(fc->dev, "IR DMA no free chunk\n"); 1678 return 0; 1679 } 1680 1681 ldesc = dbch->ndesc - 1; 1682 s = splfw(); 1683 if ((ir->flag & FWXFERQ_HANDLER) == 0) 1684 FW_GLOCK(fc); 1685 prev = STAILQ_LAST(&ir->stdma, fw_bulkxfer, link); 1686 while ((chunk = STAILQ_FIRST(&ir->stfree)) != NULL) { 1687 struct fwohcidb *db; 1688 1689#if 1 /* XXX for if_fwe */ 1690 if (chunk->mbuf != NULL) { 1691 db_tr = (struct fwohcidb_tr *)(chunk->start); 1692 db_tr->dbcnt = 1; 1693 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 1694 chunk->mbuf, fwohci_execute_db2, db_tr, 1695 /* flags */0); 1696 FWOHCI_DMA_SET(db_tr->db[1].db.desc.cmd, 1697 OHCI_UPDATE | OHCI_INPUT_LAST | 1698 OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 1699 } 1700#endif 1701 db = ((struct fwohcidb_tr *)(chunk->end))->db; 1702 FWOHCI_DMA_WRITE(db[ldesc].db.desc.res, 0); 1703 FWOHCI_DMA_CLEAR(db[ldesc].db.desc.depend, 0xf); 1704 if (prev != NULL) { 1705 db = ((struct fwohcidb_tr *)(prev->end))->db; 1706 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1707 } 1708 STAILQ_REMOVE_HEAD(&ir->stfree, link); 1709 STAILQ_INSERT_TAIL(&ir->stdma, chunk, link); 1710 prev = chunk; 1711 } 1712 if ((ir->flag & FWXFERQ_HANDLER) == 0) 1713 FW_GUNLOCK(fc); 1714 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1715 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1716 splx(s); 1717 stat = OREAD(sc, OHCI_IRCTL(dmach)); 1718 if (stat & OHCI_CNTL_DMA_ACTIVE) 1719 return 0; 1720 if (stat & OHCI_CNTL_DMA_RUN) { 1721 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1722 device_printf(sc->fc.dev, "IR DMA overrun (0x%08x)\n", stat); 1723 } 1724 1725 if (firewire_debug) 1726 printf("start IR DMA 0x%x\n", stat); 1727 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1728 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1729 OWRITE(sc, OHCI_IR_MASK, 1 << dmach); 1730 OWRITE(sc, OHCI_IRCTLCLR(dmach), 0xf0000000); 1731 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_ISOHDR); 1732 OWRITE(sc, OHCI_IRCMD(dmach), 1733 ((struct fwohcidb_tr *)(first->start))->bus_addr 1734 | dbch->ndesc); 1735 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_DMA_RUN); 1736 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IR); 1737#if 0 1738 dump_db(sc, IRX_CH + dmach); 1739#endif 1740 return err; 1741} 1742 1743int 1744fwohci_stop(struct fwohci_softc *sc, device_t dev) 1745{ 1746 u_int i; 1747 1748 fwohci_set_intr(&sc->fc, 0); 1749 1750/* Now stopping all DMA channel */ 1751 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 1752 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 1753 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1754 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1755 1756 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 1757 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 1758 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 1759 } 1760 1761#if 0 /* Let dcons(4) be accessed */ 1762/* Stop interrupt */ 1763 OWRITE(sc, FWOHCI_INTMASKCLR, 1764 OHCI_INT_EN | OHCI_INT_ERR | OHCI_INT_PHY_SID 1765 | OHCI_INT_PHY_INT 1766 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 1767 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 1768 | OHCI_INT_DMA_ARRQ | OHCI_INT_DMA_ARRS 1769 | OHCI_INT_PHY_BUS_R); 1770 1771/* FLUSH FIFO and reset Transmitter/Reciever */ 1772 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 1773#endif 1774 1775/* XXX Link down? Bus reset? */ 1776 return 0; 1777} 1778 1779int 1780fwohci_resume(struct fwohci_softc *sc, device_t dev) 1781{ 1782 int i; 1783 struct fw_xferq *ir; 1784 struct fw_bulkxfer *chunk; 1785 1786 fwohci_reset(sc, dev); 1787 /* XXX resume isochronous receive automatically. (how about TX?) */ 1788 for(i = 0; i < sc->fc.nisodma; i ++) { 1789 ir = &sc->ir[i].xferq; 1790 if((ir->flag & FWXFERQ_RUNNING) != 0) { 1791 device_printf(sc->fc.dev, 1792 "resume iso receive ch: %d\n", i); 1793 ir->flag &= ~FWXFERQ_RUNNING; 1794 /* requeue stdma to stfree */ 1795 while((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 1796 STAILQ_REMOVE_HEAD(&ir->stdma, link); 1797 STAILQ_INSERT_TAIL(&ir->stfree, chunk, link); 1798 } 1799 sc->fc.irx_enable(&sc->fc, i); 1800 } 1801 } 1802 1803 bus_generic_resume(dev); 1804 sc->fc.ibr(&sc->fc); 1805 return 0; 1806} 1807 1808#ifdef OHCI_DEBUG 1809static void 1810fwohci_dump_intr(struct fwohci_softc *sc, uint32_t stat) 1811{ 1812 if(stat & OREAD(sc, FWOHCI_INTMASK)) 1813 device_printf(fc->dev, "INTERRUPT < %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s> 0x%08x, 0x%08x\n", 1814 stat & OHCI_INT_EN ? "DMA_EN ":"", 1815 stat & OHCI_INT_PHY_REG ? "PHY_REG ":"", 1816 stat & OHCI_INT_CYC_LONG ? "CYC_LONG ":"", 1817 stat & OHCI_INT_ERR ? "INT_ERR ":"", 1818 stat & OHCI_INT_CYC_ERR ? "CYC_ERR ":"", 1819 stat & OHCI_INT_CYC_LOST ? "CYC_LOST ":"", 1820 stat & OHCI_INT_CYC_64SECOND ? "CYC_64SECOND ":"", 1821 stat & OHCI_INT_CYC_START ? "CYC_START ":"", 1822 stat & OHCI_INT_PHY_INT ? "PHY_INT ":"", 1823 stat & OHCI_INT_PHY_BUS_R ? "BUS_RESET ":"", 1824 stat & OHCI_INT_PHY_SID ? "SID ":"", 1825 stat & OHCI_INT_LR_ERR ? "DMA_LR_ERR ":"", 1826 stat & OHCI_INT_PW_ERR ? "DMA_PW_ERR ":"", 1827 stat & OHCI_INT_DMA_IR ? "DMA_IR ":"", 1828 stat & OHCI_INT_DMA_IT ? "DMA_IT " :"", 1829 stat & OHCI_INT_DMA_PRRS ? "DMA_PRRS " :"", 1830 stat & OHCI_INT_DMA_PRRQ ? "DMA_PRRQ " :"", 1831 stat & OHCI_INT_DMA_ARRS ? "DMA_ARRS " :"", 1832 stat & OHCI_INT_DMA_ARRQ ? "DMA_ARRQ " :"", 1833 stat & OHCI_INT_DMA_ATRS ? "DMA_ATRS " :"", 1834 stat & OHCI_INT_DMA_ATRQ ? "DMA_ATRQ " :"", 1835 stat, OREAD(sc, FWOHCI_INTMASK) 1836 ); 1837} 1838#endif 1839static void 1840fwohci_intr_core(struct fwohci_softc *sc, uint32_t stat, int count) 1841{ 1842 struct firewire_comm *fc = (struct firewire_comm *)sc; 1843 uint32_t node_id, plen; 1844 1845 FW_GLOCK_ASSERT(fc); 1846 if ((stat & OHCI_INT_PHY_BUS_R) && (fc->status != FWBUSRESET)) { 1847 fc->status = FWBUSRESET; 1848 /* Disable bus reset interrupt until sid recv. */ 1849 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_BUS_R); 1850 1851 device_printf(fc->dev, "%s: BUS reset\n", __func__); 1852 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_CYC_LOST); 1853 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCSRC); 1854 1855 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1856 sc->atrq.xferq.flag &= ~FWXFERQ_RUNNING; 1857 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1858 sc->atrs.xferq.flag &= ~FWXFERQ_RUNNING; 1859 1860 if (!kdb_active) 1861 taskqueue_enqueue(sc->fc.taskqueue, &sc->fwohci_task_busreset); 1862 } 1863 if (stat & OHCI_INT_PHY_SID) { 1864 /* Enable bus reset interrupt */ 1865 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_BUS_R); 1866 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_PHY_BUS_R); 1867 1868 /* Allow async. request to us */ 1869 OWRITE(sc, OHCI_AREQHI, 1 << 31); 1870 if (firewire_phydma_enable) { 1871 /* allow from all nodes */ 1872 OWRITE(sc, OHCI_PREQHI, 0x7fffffff); 1873 OWRITE(sc, OHCI_PREQLO, 0xffffffff); 1874 /* 0 to 4GB region */ 1875 OWRITE(sc, OHCI_PREQUPPER, 0x10000); 1876 } 1877 /* Set ATRetries register */ 1878 OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff); 1879 1880 /* 1881 * Checking whether the node is root or not. If root, turn on 1882 * cycle master. 1883 */ 1884 node_id = OREAD(sc, FWOHCI_NODEID); 1885 plen = OREAD(sc, OHCI_SID_CNT); 1886 1887 fc->nodeid = node_id & 0x3f; 1888 device_printf(fc->dev, "%s: node_id=0x%08x, SelfID Count=%d, ", 1889 __func__, fc->nodeid, (plen >> 16) & 0xff); 1890 if (!(node_id & OHCI_NODE_VALID)) { 1891 device_printf(fc->dev, "%s: Bus reset failure\n", 1892 __func__); 1893 goto sidout; 1894 } 1895 1896 /* cycle timer */ 1897 sc->cycle_lost = 0; 1898 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_CYC_LOST); 1899 if ((node_id & OHCI_NODE_ROOT) && !nocyclemaster) { 1900 printf("CYCLEMASTER mode\n"); 1901 OWRITE(sc, OHCI_LNKCTL, 1902 OHCI_CNTL_CYCMTR | OHCI_CNTL_CYCTIMER); 1903 } else { 1904 printf("non CYCLEMASTER mode\n"); 1905 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCMTR); 1906 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_CYCTIMER); 1907 } 1908 1909 fc->status = FWBUSINIT; 1910 1911 if (!kdb_active) 1912 taskqueue_enqueue(sc->fc.taskqueue, &sc->fwohci_task_sid); 1913 } 1914sidout: 1915 if ((stat & ~(OHCI_INT_PHY_BUS_R | OHCI_INT_PHY_SID)) && (!kdb_active)) 1916 taskqueue_enqueue(sc->fc.taskqueue, &sc->fwohci_task_dma); 1917} 1918 1919static void 1920fwohci_intr_dma(struct fwohci_softc *sc, uint32_t stat, int count) 1921{ 1922 uint32_t irstat, itstat; 1923 u_int i; 1924 struct firewire_comm *fc = (struct firewire_comm *)sc; 1925 1926 if (stat & OHCI_INT_DMA_IR) { 1927 irstat = atomic_readandclear_int(&sc->irstat); 1928 for(i = 0; i < fc->nisodma ; i++){ 1929 struct fwohci_dbch *dbch; 1930 1931 if((irstat & (1 << i)) != 0){ 1932 dbch = &sc->ir[i]; 1933 if ((dbch->xferq.flag & FWXFERQ_OPEN) == 0) { 1934 device_printf(sc->fc.dev, 1935 "dma(%d) not active\n", i); 1936 continue; 1937 } 1938 fwohci_rbuf_update(sc, i); 1939 } 1940 } 1941 } 1942 if (stat & OHCI_INT_DMA_IT) { 1943 itstat = atomic_readandclear_int(&sc->itstat); 1944 for(i = 0; i < fc->nisodma ; i++){ 1945 if((itstat & (1 << i)) != 0){ 1946 fwohci_tbuf_update(sc, i); 1947 } 1948 } 1949 } 1950 if (stat & OHCI_INT_DMA_PRRS) { 1951#if 0 1952 dump_dma(sc, ARRS_CH); 1953 dump_db(sc, ARRS_CH); 1954#endif 1955 fwohci_arcv(sc, &sc->arrs, count); 1956 } 1957 if (stat & OHCI_INT_DMA_PRRQ) { 1958#if 0 1959 dump_dma(sc, ARRQ_CH); 1960 dump_db(sc, ARRQ_CH); 1961#endif 1962 fwohci_arcv(sc, &sc->arrq, count); 1963 } 1964 if (stat & OHCI_INT_CYC_LOST) { 1965 if (sc->cycle_lost >= 0) 1966 sc->cycle_lost ++; 1967 if (sc->cycle_lost > 10) { 1968 sc->cycle_lost = -1; 1969#if 0 1970 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCTIMER); 1971#endif 1972 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_CYC_LOST); 1973 device_printf(fc->dev, "too many cycles lost, " 1974 "no cycle master present?\n"); 1975 } 1976 } 1977 if (stat & OHCI_INT_DMA_ATRQ) { 1978 fwohci_txd(sc, &(sc->atrq)); 1979 } 1980 if (stat & OHCI_INT_DMA_ATRS) { 1981 fwohci_txd(sc, &(sc->atrs)); 1982 } 1983 if (stat & OHCI_INT_PW_ERR) { 1984 device_printf(fc->dev, "posted write error\n"); 1985 } 1986 if (stat & OHCI_INT_ERR) { 1987 device_printf(fc->dev, "unrecoverable error\n"); 1988 } 1989 if (stat & OHCI_INT_PHY_INT) { 1990 device_printf(fc->dev, "phy int\n"); 1991 } 1992 1993 return; 1994} 1995 1996static void 1997fwohci_task_busreset(void *arg, int pending) 1998{ 1999 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2000 2001 FW_GLOCK(&sc->fc); 2002 fw_busreset(&sc->fc, FWBUSRESET); 2003 OWRITE(sc, OHCI_CROMHDR, ntohl(sc->fc.config_rom[0])); 2004 OWRITE(sc, OHCI_BUS_OPT, ntohl(sc->fc.config_rom[2])); 2005 FW_GUNLOCK(&sc->fc); 2006} 2007 2008static void 2009fwohci_task_sid(void *arg, int pending) 2010{ 2011 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2012 struct firewire_comm *fc = &sc->fc; 2013 uint32_t *buf; 2014 int i, plen; 2015 2016 2017 /* 2018 * We really should have locking 2019 * here. Not sure why it's not 2020 */ 2021 plen = OREAD(sc, OHCI_SID_CNT); 2022 2023 if (plen & OHCI_SID_ERR) { 2024 device_printf(fc->dev, "SID Error\n"); 2025 return; 2026 } 2027 plen &= OHCI_SID_CNT_MASK; 2028 if (plen < 4 || plen > OHCI_SIDSIZE) { 2029 device_printf(fc->dev, "invalid SID len = %d\n", plen); 2030 return; 2031 } 2032 plen -= 4; /* chop control info */ 2033 buf = (uint32_t *)malloc(OHCI_SIDSIZE, M_FW, M_NOWAIT); 2034 if (buf == NULL) { 2035 device_printf(fc->dev, "malloc failed\n"); 2036 return; 2037 } 2038 for (i = 0; i < plen / 4; i ++) 2039 buf[i] = FWOHCI_DMA_READ(sc->sid_buf[i+1]); 2040 2041 /* pending all pre-bus_reset packets */ 2042 fwohci_txd(sc, &sc->atrq); 2043 fwohci_txd(sc, &sc->atrs); 2044 fwohci_arcv(sc, &sc->arrs, -1); 2045 fwohci_arcv(sc, &sc->arrq, -1); 2046 fw_drain_txq(fc); 2047 fw_sidrcv(fc, buf, plen); 2048 free(buf, M_FW); 2049} 2050 2051static void 2052fwohci_task_dma(void *arg, int pending) 2053{ 2054 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2055 uint32_t stat; 2056 2057again: 2058 stat = atomic_readandclear_int(&sc->intstat); 2059 if (stat) 2060 fwohci_intr_dma(sc, stat, -1); 2061 else 2062 return; 2063 goto again; 2064} 2065 2066static int 2067fwohci_check_stat(struct fwohci_softc *sc) 2068{ 2069 uint32_t stat, irstat, itstat; 2070 2071 FW_GLOCK_ASSERT(&sc->fc); 2072 stat = OREAD(sc, FWOHCI_INTSTAT); 2073 if (stat == 0xffffffff) { 2074 if (!bus_child_present(sc->fc.dev)) 2075 return (FILTER_HANDLED); 2076 device_printf(sc->fc.dev, "device physically ejected?\n"); 2077 return (FILTER_STRAY); 2078 } 2079 if (stat) 2080 OWRITE(sc, FWOHCI_INTSTATCLR, stat & ~OHCI_INT_PHY_BUS_R); 2081 2082 stat &= sc->intmask; 2083 if (stat == 0) 2084 return (FILTER_STRAY); 2085 2086 atomic_set_int(&sc->intstat, stat); 2087 if (stat & OHCI_INT_DMA_IR) { 2088 irstat = OREAD(sc, OHCI_IR_STAT); 2089 OWRITE(sc, OHCI_IR_STATCLR, irstat); 2090 atomic_set_int(&sc->irstat, irstat); 2091 } 2092 if (stat & OHCI_INT_DMA_IT) { 2093 itstat = OREAD(sc, OHCI_IT_STAT); 2094 OWRITE(sc, OHCI_IT_STATCLR, itstat); 2095 atomic_set_int(&sc->itstat, itstat); 2096 } 2097 2098 fwohci_intr_core(sc, stat, -1); 2099 return (FILTER_HANDLED); 2100} 2101 2102void 2103fwohci_intr(void *arg) 2104{ 2105 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2106 2107 FW_GLOCK(&sc->fc); 2108 fwohci_check_stat(sc); 2109 FW_GUNLOCK(&sc->fc); 2110} 2111 2112void 2113fwohci_poll(struct firewire_comm *fc, int quick, int count) 2114{ 2115 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 2116 2117 FW_GLOCK(fc); 2118 fwohci_check_stat(sc); 2119 FW_GUNLOCK(fc); 2120} 2121 2122static void 2123fwohci_set_intr(struct firewire_comm *fc, int enable) 2124{ 2125 struct fwohci_softc *sc; 2126 2127 sc = (struct fwohci_softc *)fc; 2128 if (firewire_debug) 2129 device_printf(sc->fc.dev, "fwohci_set_intr: %d\n", enable); 2130 if (enable) { 2131 sc->intmask |= OHCI_INT_EN; 2132 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_EN); 2133 } else { 2134 sc->intmask &= ~OHCI_INT_EN; 2135 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_EN); 2136 } 2137} 2138 2139static void 2140fwohci_tbuf_update(struct fwohci_softc *sc, int dmach) 2141{ 2142 struct firewire_comm *fc = &sc->fc; 2143 struct fwohcidb *db; 2144 struct fw_bulkxfer *chunk; 2145 struct fw_xferq *it; 2146 uint32_t stat, count; 2147 int s, w=0, ldesc; 2148 2149 it = fc->it[dmach]; 2150 ldesc = sc->it[dmach].ndesc - 1; 2151 s = splfw(); /* unnecessary ? */ 2152 FW_GLOCK(fc); 2153 fwdma_sync_multiseg_all(sc->it[dmach].am, BUS_DMASYNC_POSTREAD); 2154 if (firewire_debug) 2155 dump_db(sc, ITX_CH + dmach); 2156 while ((chunk = STAILQ_FIRST(&it->stdma)) != NULL) { 2157 db = ((struct fwohcidb_tr *)(chunk->end))->db; 2158 stat = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2159 >> OHCI_STATUS_SHIFT; 2160 db = ((struct fwohcidb_tr *)(chunk->start))->db; 2161 /* timestamp */ 2162 count = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2163 & OHCI_COUNT_MASK; 2164 if (stat == 0) 2165 break; 2166 STAILQ_REMOVE_HEAD(&it->stdma, link); 2167 switch (stat & FWOHCIEV_MASK){ 2168 case FWOHCIEV_ACKCOMPL: 2169#if 0 2170 device_printf(fc->dev, "0x%08x\n", count); 2171#endif 2172 break; 2173 default: 2174 device_printf(fc->dev, 2175 "Isochronous transmit err %02x(%s)\n", 2176 stat, fwohcicode[stat & 0x1f]); 2177 } 2178 STAILQ_INSERT_TAIL(&it->stfree, chunk, link); 2179 w++; 2180 } 2181 FW_GUNLOCK(fc); 2182 splx(s); 2183 if (w) 2184 wakeup(it); 2185} 2186 2187static void 2188fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) 2189{ 2190 struct firewire_comm *fc = &sc->fc; 2191 struct fwohcidb_tr *db_tr; 2192 struct fw_bulkxfer *chunk; 2193 struct fw_xferq *ir; 2194 uint32_t stat; 2195 int s, w = 0, ldesc; 2196 2197 ir = fc->ir[dmach]; 2198 ldesc = sc->ir[dmach].ndesc - 1; 2199 2200#if 0 2201 dump_db(sc, dmach); 2202#endif 2203 s = splfw(); 2204 if ((ir->flag & FWXFERQ_HANDLER) == 0) 2205 FW_GLOCK(fc); 2206 fwdma_sync_multiseg_all(sc->ir[dmach].am, BUS_DMASYNC_POSTREAD); 2207 while ((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 2208 db_tr = (struct fwohcidb_tr *)chunk->end; 2209 stat = FWOHCI_DMA_READ(db_tr->db[ldesc].db.desc.res) 2210 >> OHCI_STATUS_SHIFT; 2211 if (stat == 0) 2212 break; 2213 2214 if (chunk->mbuf != NULL) { 2215 bus_dmamap_sync(sc->ir[dmach].dmat, db_tr->dma_map, 2216 BUS_DMASYNC_POSTREAD); 2217 bus_dmamap_unload(sc->ir[dmach].dmat, db_tr->dma_map); 2218 } else if (ir->buf != NULL) { 2219 fwdma_sync_multiseg(ir->buf, chunk->poffset, 2220 ir->bnpacket, BUS_DMASYNC_POSTREAD); 2221 } else { 2222 /* XXX */ 2223 printf("fwohci_rbuf_update: this shouldn't happend\n"); 2224 } 2225 2226 STAILQ_REMOVE_HEAD(&ir->stdma, link); 2227 STAILQ_INSERT_TAIL(&ir->stvalid, chunk, link); 2228 switch (stat & FWOHCIEV_MASK) { 2229 case FWOHCIEV_ACKCOMPL: 2230 chunk->resp = 0; 2231 break; 2232 default: 2233 chunk->resp = EINVAL; 2234 device_printf(fc->dev, 2235 "Isochronous receive err %02x(%s)\n", 2236 stat, fwohcicode[stat & 0x1f]); 2237 } 2238 w++; 2239 } 2240 if ((ir->flag & FWXFERQ_HANDLER) == 0) 2241 FW_GUNLOCK(fc); 2242 splx(s); 2243 if (w == 0) 2244 return; 2245 2246 if (ir->flag & FWXFERQ_HANDLER) 2247 ir->hand(ir); 2248 else 2249 wakeup(ir); 2250} 2251 2252void 2253dump_dma(struct fwohci_softc *sc, uint32_t ch) 2254{ 2255 uint32_t off, cntl, stat, cmd, match; 2256 2257 if(ch == 0){ 2258 off = OHCI_ATQOFF; 2259 }else if(ch == 1){ 2260 off = OHCI_ATSOFF; 2261 }else if(ch == 2){ 2262 off = OHCI_ARQOFF; 2263 }else if(ch == 3){ 2264 off = OHCI_ARSOFF; 2265 }else if(ch < IRX_CH){ 2266 off = OHCI_ITCTL(ch - ITX_CH); 2267 }else{ 2268 off = OHCI_IRCTL(ch - IRX_CH); 2269 } 2270 cntl = stat = OREAD(sc, off); 2271 cmd = OREAD(sc, off + 0xc); 2272 match = OREAD(sc, off + 0x10); 2273 2274 device_printf(sc->fc.dev, "ch %1x cntl:0x%08x cmd:0x%08x match:0x%08x\n", 2275 ch, 2276 cntl, 2277 cmd, 2278 match); 2279 stat &= 0xffff ; 2280 if (stat) { 2281 device_printf(sc->fc.dev, "dma %d ch:%s%s%s%s%s%s %s(%x)\n", 2282 ch, 2283 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2284 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2285 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2286 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2287 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2288 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2289 fwohcicode[stat & 0x1f], 2290 stat & 0x1f 2291 ); 2292 }else{ 2293 device_printf(sc->fc.dev, "dma %d ch: Nostat\n", ch); 2294 } 2295} 2296 2297void 2298dump_db(struct fwohci_softc *sc, uint32_t ch) 2299{ 2300 struct fwohci_dbch *dbch; 2301 struct fwohcidb_tr *cp = NULL, *pp, *np = NULL; 2302 struct fwohcidb *curr = NULL, *prev, *next = NULL; 2303 int idb, jdb; 2304 uint32_t cmd, off; 2305 if(ch == 0){ 2306 off = OHCI_ATQOFF; 2307 dbch = &sc->atrq; 2308 }else if(ch == 1){ 2309 off = OHCI_ATSOFF; 2310 dbch = &sc->atrs; 2311 }else if(ch == 2){ 2312 off = OHCI_ARQOFF; 2313 dbch = &sc->arrq; 2314 }else if(ch == 3){ 2315 off = OHCI_ARSOFF; 2316 dbch = &sc->arrs; 2317 }else if(ch < IRX_CH){ 2318 off = OHCI_ITCTL(ch - ITX_CH); 2319 dbch = &sc->it[ch - ITX_CH]; 2320 }else { 2321 off = OHCI_IRCTL(ch - IRX_CH); 2322 dbch = &sc->ir[ch - IRX_CH]; 2323 } 2324 cmd = OREAD(sc, off + 0xc); 2325 2326 if( dbch->ndb == 0 ){ 2327 device_printf(sc->fc.dev, "No DB is attached ch=%d\n", ch); 2328 return; 2329 } 2330 pp = dbch->top; 2331 prev = pp->db; 2332 for(idb = 0 ; idb < dbch->ndb ; idb ++ ){ 2333 cp = STAILQ_NEXT(pp, link); 2334 if(cp == NULL){ 2335 curr = NULL; 2336 goto outdb; 2337 } 2338 np = STAILQ_NEXT(cp, link); 2339 for(jdb = 0 ; jdb < dbch->ndesc ; jdb ++ ){ 2340 if ((cmd & 0xfffffff0) == cp->bus_addr) { 2341 curr = cp->db; 2342 if(np != NULL){ 2343 next = np->db; 2344 }else{ 2345 next = NULL; 2346 } 2347 goto outdb; 2348 } 2349 } 2350 pp = STAILQ_NEXT(pp, link); 2351 if(pp == NULL){ 2352 curr = NULL; 2353 goto outdb; 2354 } 2355 prev = pp->db; 2356 } 2357outdb: 2358 if( curr != NULL){ 2359#if 0 2360 printf("Prev DB %d\n", ch); 2361 print_db(pp, prev, ch, dbch->ndesc); 2362#endif 2363 printf("Current DB %d\n", ch); 2364 print_db(cp, curr, ch, dbch->ndesc); 2365#if 0 2366 printf("Next DB %d\n", ch); 2367 print_db(np, next, ch, dbch->ndesc); 2368#endif 2369 }else{ 2370 printf("dbdump err ch = %d cmd = 0x%08x\n", ch, cmd); 2371 } 2372 return; 2373} 2374 2375void 2376print_db(struct fwohcidb_tr *db_tr, struct fwohcidb *db, 2377 uint32_t ch, uint32_t max) 2378{ 2379 fwohcireg_t stat; 2380 int i, key; 2381 uint32_t cmd, res; 2382 2383 if(db == NULL){ 2384 printf("No Descriptor is found\n"); 2385 return; 2386 } 2387 2388 printf("ch = %d\n%8s %s %s %s %s %4s %8s %8s %4s:%4s\n", 2389 ch, 2390 "Current", 2391 "OP ", 2392 "KEY", 2393 "INT", 2394 "BR ", 2395 "len", 2396 "Addr", 2397 "Depend", 2398 "Stat", 2399 "Cnt"); 2400 for( i = 0 ; i <= max ; i ++){ 2401 cmd = FWOHCI_DMA_READ(db[i].db.desc.cmd); 2402 res = FWOHCI_DMA_READ(db[i].db.desc.res); 2403 key = cmd & OHCI_KEY_MASK; 2404 stat = res >> OHCI_STATUS_SHIFT; 2405#if defined(__DragonFly__) || __FreeBSD_version < 500000 2406 printf("%08x %s %s %s %s %5d %08x %08x %04x:%04x", 2407 db_tr->bus_addr, 2408#else 2409 printf("%08jx %s %s %s %s %5d %08x %08x %04x:%04x", 2410 (uintmax_t)db_tr->bus_addr, 2411#endif 2412 dbcode[(cmd >> 28) & 0xf], 2413 dbkey[(cmd >> 24) & 0x7], 2414 dbcond[(cmd >> 20) & 0x3], 2415 dbcond[(cmd >> 18) & 0x3], 2416 cmd & OHCI_COUNT_MASK, 2417 FWOHCI_DMA_READ(db[i].db.desc.addr), 2418 FWOHCI_DMA_READ(db[i].db.desc.depend), 2419 stat, 2420 res & OHCI_COUNT_MASK); 2421 if(stat & 0xff00){ 2422 printf(" %s%s%s%s%s%s %s(%x)\n", 2423 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2424 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2425 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2426 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2427 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2428 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2429 fwohcicode[stat & 0x1f], 2430 stat & 0x1f 2431 ); 2432 }else{ 2433 printf(" Nostat\n"); 2434 } 2435 if(key == OHCI_KEY_ST2 ){ 2436 printf("0x%08x 0x%08x 0x%08x 0x%08x\n", 2437 FWOHCI_DMA_READ(db[i+1].db.immed[0]), 2438 FWOHCI_DMA_READ(db[i+1].db.immed[1]), 2439 FWOHCI_DMA_READ(db[i+1].db.immed[2]), 2440 FWOHCI_DMA_READ(db[i+1].db.immed[3])); 2441 } 2442 if(key == OHCI_KEY_DEVICE){ 2443 return; 2444 } 2445 if((cmd & OHCI_BRANCH_MASK) 2446 == OHCI_BRANCH_ALWAYS){ 2447 return; 2448 } 2449 if((cmd & OHCI_CMD_MASK) 2450 == OHCI_OUTPUT_LAST){ 2451 return; 2452 } 2453 if((cmd & OHCI_CMD_MASK) 2454 == OHCI_INPUT_LAST){ 2455 return; 2456 } 2457 if(key == OHCI_KEY_ST2 ){ 2458 i++; 2459 } 2460 } 2461 return; 2462} 2463 2464void 2465fwohci_ibr(struct firewire_comm *fc) 2466{ 2467 struct fwohci_softc *sc; 2468 uint32_t fun; 2469 2470 device_printf(fc->dev, "Initiate bus reset\n"); 2471 sc = (struct fwohci_softc *)fc; 2472 2473 FW_GLOCK(fc); 2474 /* 2475 * Make sure our cached values from the config rom are 2476 * initialised. 2477 */ 2478 OWRITE(sc, OHCI_CROMHDR, ntohl(sc->fc.config_rom[0])); 2479 OWRITE(sc, OHCI_BUS_OPT, ntohl(sc->fc.config_rom[2])); 2480 2481 /* 2482 * Set root hold-off bit so that non cyclemaster capable node 2483 * shouldn't became the root node. 2484 */ 2485#if 1 2486 fun = fwphy_rddata(sc, FW_PHY_IBR_REG); 2487 fun |= FW_PHY_IBR | FW_PHY_RHB; 2488 fun = fwphy_wrdata(sc, FW_PHY_IBR_REG, fun); 2489#else /* Short bus reset */ 2490 fun = fwphy_rddata(sc, FW_PHY_ISBR_REG); 2491 fun |= FW_PHY_ISBR | FW_PHY_RHB; 2492 fun = fwphy_wrdata(sc, FW_PHY_ISBR_REG, fun); 2493#endif 2494 FW_GUNLOCK(fc); 2495} 2496 2497void 2498fwohci_txbufdb(struct fwohci_softc *sc, int dmach, struct fw_bulkxfer *bulkxfer) 2499{ 2500 struct fwohcidb_tr *db_tr, *fdb_tr; 2501 struct fwohci_dbch *dbch; 2502 struct fwohcidb *db; 2503 struct fw_pkt *fp; 2504 struct fwohci_txpkthdr *ohcifp; 2505 unsigned short chtag; 2506 int idb; 2507 2508 FW_GLOCK_ASSERT(&sc->fc); 2509 2510 dbch = &sc->it[dmach]; 2511 chtag = sc->it[dmach].xferq.flag & 0xff; 2512 2513 db_tr = (struct fwohcidb_tr *)(bulkxfer->start); 2514 fdb_tr = (struct fwohcidb_tr *)(bulkxfer->end); 2515/* 2516device_printf(sc->fc.dev, "DB %08x %08x %08x\n", bulkxfer, db_tr->bus_addr, fdb_tr->bus_addr); 2517*/ 2518 for (idb = 0; idb < dbch->xferq.bnpacket; idb ++) { 2519 db = db_tr->db; 2520 fp = (struct fw_pkt *)db_tr->buf; 2521 ohcifp = (struct fwohci_txpkthdr *) db[1].db.immed; 2522 ohcifp->mode.ld[0] = fp->mode.ld[0]; 2523 ohcifp->mode.common.spd = 0 & 0x7; 2524 ohcifp->mode.stream.len = fp->mode.stream.len; 2525 ohcifp->mode.stream.chtag = chtag; 2526 ohcifp->mode.stream.tcode = 0xa; 2527#if BYTE_ORDER == BIG_ENDIAN 2528 FWOHCI_DMA_WRITE(db[1].db.immed[0], db[1].db.immed[0]); 2529 FWOHCI_DMA_WRITE(db[1].db.immed[1], db[1].db.immed[1]); 2530#endif 2531 2532 FWOHCI_DMA_CLEAR(db[2].db.desc.cmd, OHCI_COUNT_MASK); 2533 FWOHCI_DMA_SET(db[2].db.desc.cmd, fp->mode.stream.len); 2534 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2535#if 0 /* if bulkxfer->npackets changes */ 2536 db[2].db.desc.cmd = OHCI_OUTPUT_LAST 2537 | OHCI_UPDATE 2538 | OHCI_BRANCH_ALWAYS; 2539 db[0].db.desc.depend = 2540 = db[dbch->ndesc - 1].db.desc.depend 2541 = STAILQ_NEXT(db_tr, link)->bus_addr | dbch->ndesc; 2542#else 2543 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 2544 FWOHCI_DMA_SET(db[dbch->ndesc - 1].db.desc.depend, dbch->ndesc); 2545#endif 2546 bulkxfer->end = (caddr_t)db_tr; 2547 db_tr = STAILQ_NEXT(db_tr, link); 2548 } 2549 db = ((struct fwohcidb_tr *)bulkxfer->end)->db; 2550 FWOHCI_DMA_CLEAR(db[0].db.desc.depend, 0xf); 2551 FWOHCI_DMA_CLEAR(db[dbch->ndesc - 1].db.desc.depend, 0xf); 2552#if 0 /* if bulkxfer->npackets changes */ 2553 db[dbch->ndesc - 1].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2554 /* OHCI 1.1 and above */ 2555 db[0].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2556#endif 2557/* 2558 db_tr = (struct fwohcidb_tr *)bulkxfer->start; 2559 fdb_tr = (struct fwohcidb_tr *)bulkxfer->end; 2560device_printf(sc->fc.dev, "DB %08x %3d %08x %08x\n", bulkxfer, bulkxfer->npacket, db_tr->bus_addr, fdb_tr->bus_addr); 2561*/ 2562 return; 2563} 2564 2565static int 2566fwohci_add_tx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2567 int poffset) 2568{ 2569 struct fwohcidb *db = db_tr->db; 2570 struct fw_xferq *it; 2571 int err = 0; 2572 2573 it = &dbch->xferq; 2574 if(it->buf == 0){ 2575 err = EINVAL; 2576 return err; 2577 } 2578 db_tr->buf = fwdma_v_addr(it->buf, poffset); 2579 db_tr->dbcnt = 3; 2580 2581 FWOHCI_DMA_WRITE(db[0].db.desc.cmd, 2582 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | 8); 2583 FWOHCI_DMA_WRITE(db[0].db.desc.addr, 0); 2584 bzero((void *)&db[1].db.immed[0], sizeof(db[1].db.immed)); 2585 FWOHCI_DMA_WRITE(db[2].db.desc.addr, 2586 fwdma_bus_addr(it->buf, poffset) + sizeof(uint32_t)); 2587 2588 FWOHCI_DMA_WRITE(db[2].db.desc.cmd, 2589 OHCI_OUTPUT_LAST | OHCI_UPDATE | OHCI_BRANCH_ALWAYS); 2590#if 1 2591 FWOHCI_DMA_WRITE(db[0].db.desc.res, 0); 2592 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2593#endif 2594 return 0; 2595} 2596 2597int 2598fwohci_add_rx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2599 int poffset, struct fwdma_alloc *dummy_dma) 2600{ 2601 struct fwohcidb *db = db_tr->db; 2602 struct fw_xferq *ir; 2603 int i, ldesc; 2604 bus_addr_t dbuf[2]; 2605 int dsiz[2]; 2606 2607 ir = &dbch->xferq; 2608 if (ir->buf == NULL && (dbch->xferq.flag & FWXFERQ_EXTBUF) == 0) { 2609 if (db_tr->buf == NULL) { 2610 db_tr->buf = fwdma_malloc_size(dbch->dmat, 2611 &db_tr->dma_map, ir->psize, &dbuf[0], 2612 BUS_DMA_NOWAIT); 2613 if (db_tr->buf == NULL) 2614 return(ENOMEM); 2615 } 2616 db_tr->dbcnt = 1; 2617 dsiz[0] = ir->psize; 2618 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2619 BUS_DMASYNC_PREREAD); 2620 } else { 2621 db_tr->dbcnt = 0; 2622 if (dummy_dma != NULL) { 2623 dsiz[db_tr->dbcnt] = sizeof(uint32_t); 2624 dbuf[db_tr->dbcnt++] = dummy_dma->bus_addr; 2625 } 2626 dsiz[db_tr->dbcnt] = ir->psize; 2627 if (ir->buf != NULL) { 2628 db_tr->buf = fwdma_v_addr(ir->buf, poffset); 2629 dbuf[db_tr->dbcnt] = fwdma_bus_addr( ir->buf, poffset); 2630 } 2631 db_tr->dbcnt++; 2632 } 2633 for(i = 0 ; i < db_tr->dbcnt ; i++){ 2634 FWOHCI_DMA_WRITE(db[i].db.desc.addr, dbuf[i]); 2635 FWOHCI_DMA_WRITE(db[i].db.desc.cmd, OHCI_INPUT_MORE | dsiz[i]); 2636 if (ir->flag & FWXFERQ_STREAM) { 2637 FWOHCI_DMA_SET(db[i].db.desc.cmd, OHCI_UPDATE); 2638 } 2639 FWOHCI_DMA_WRITE(db[i].db.desc.res, dsiz[i]); 2640 } 2641 ldesc = db_tr->dbcnt - 1; 2642 if (ir->flag & FWXFERQ_STREAM) { 2643 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_INPUT_LAST); 2644 } 2645 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_BRANCH_ALWAYS); 2646 return 0; 2647} 2648 2649 2650static int 2651fwohci_arcv_swap(struct fw_pkt *fp, int len) 2652{ 2653 struct fw_pkt *fp0; 2654 uint32_t ld0; 2655 int slen, hlen; 2656#if BYTE_ORDER == BIG_ENDIAN 2657 int i; 2658#endif 2659 2660 ld0 = FWOHCI_DMA_READ(fp->mode.ld[0]); 2661#if 0 2662 printf("ld0: x%08x\n", ld0); 2663#endif 2664 fp0 = (struct fw_pkt *)&ld0; 2665 /* determine length to swap */ 2666 switch (fp0->mode.common.tcode) { 2667 case FWTCODE_RREQQ: 2668 case FWTCODE_WRES: 2669 case FWTCODE_WREQQ: 2670 case FWTCODE_RRESQ: 2671 case FWOHCITCODE_PHY: 2672 slen = 12; 2673 break; 2674 case FWTCODE_RREQB: 2675 case FWTCODE_WREQB: 2676 case FWTCODE_LREQ: 2677 case FWTCODE_RRESB: 2678 case FWTCODE_LRES: 2679 slen = 16; 2680 break; 2681 default: 2682 printf("Unknown tcode %d\n", fp0->mode.common.tcode); 2683 return(0); 2684 } 2685 hlen = tinfo[fp0->mode.common.tcode].hdr_len; 2686 if (hlen > len) { 2687 if (firewire_debug) 2688 printf("splitted header\n"); 2689 return(-hlen); 2690 } 2691#if BYTE_ORDER == BIG_ENDIAN 2692 for(i = 0; i < slen/4; i ++) 2693 fp->mode.ld[i] = FWOHCI_DMA_READ(fp->mode.ld[i]); 2694#endif 2695 return(hlen); 2696} 2697 2698static int 2699fwohci_get_plen(struct fwohci_softc *sc, struct fwohci_dbch *dbch, struct fw_pkt *fp) 2700{ 2701 struct tcode_info *info; 2702 int r; 2703 2704 info = &tinfo[fp->mode.common.tcode]; 2705 r = info->hdr_len + sizeof(uint32_t); 2706 if ((info->flag & FWTI_BLOCK_ASY) != 0) 2707 r += roundup2(fp->mode.wreqb.len, sizeof(uint32_t)); 2708 2709 if (r == sizeof(uint32_t)) { 2710 /* XXX */ 2711 device_printf(sc->fc.dev, "Unknown tcode %d\n", 2712 fp->mode.common.tcode); 2713 return (-1); 2714 } 2715 2716 if (r > dbch->xferq.psize) { 2717 device_printf(sc->fc.dev, "Invalid packet length %d\n", r); 2718 return (-1); 2719 /* panic ? */ 2720 } 2721 2722 return r; 2723} 2724 2725static void 2726fwohci_arcv_free_buf(struct fwohci_softc *sc, struct fwohci_dbch *dbch, 2727 struct fwohcidb_tr *db_tr, uint32_t off, int wake) 2728{ 2729 struct fwohcidb *db = &db_tr->db[0]; 2730 2731 FWOHCI_DMA_CLEAR(db->db.desc.depend, 0xf); 2732 FWOHCI_DMA_WRITE(db->db.desc.res, dbch->xferq.psize); 2733 FWOHCI_DMA_SET(dbch->bottom->db[0].db.desc.depend, 1); 2734 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 2735 dbch->bottom = db_tr; 2736 2737 if (wake) 2738 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 2739} 2740 2741static void 2742fwohci_arcv(struct fwohci_softc *sc, struct fwohci_dbch *dbch, int count) 2743{ 2744 struct fwohcidb_tr *db_tr; 2745 struct iovec vec[2]; 2746 struct fw_pkt pktbuf; 2747 int nvec; 2748 struct fw_pkt *fp; 2749 uint8_t *ld; 2750 uint32_t stat, off, status, event; 2751 u_int spd; 2752 int len, plen, hlen, pcnt, offset; 2753 int s; 2754 caddr_t buf; 2755 int resCount; 2756 2757 if(&sc->arrq == dbch){ 2758 off = OHCI_ARQOFF; 2759 }else if(&sc->arrs == dbch){ 2760 off = OHCI_ARSOFF; 2761 }else{ 2762 return; 2763 } 2764 2765 s = splfw(); 2766 db_tr = dbch->top; 2767 pcnt = 0; 2768 /* XXX we cannot handle a packet which lies in more than two buf */ 2769 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 2770 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 2771 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) >> OHCI_STATUS_SHIFT; 2772 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) & OHCI_COUNT_MASK; 2773 while (status & OHCI_CNTL_DMA_ACTIVE) { 2774#if 0 2775 2776 if (off == OHCI_ARQOFF) 2777 printf("buf 0x%08x, status 0x%04x, resCount 0x%04x\n", 2778 db_tr->bus_addr, status, resCount); 2779#endif 2780 len = dbch->xferq.psize - resCount; 2781 ld = (uint8_t *)db_tr->buf; 2782 if (dbch->pdb_tr == NULL) { 2783 len -= dbch->buf_offset; 2784 ld += dbch->buf_offset; 2785 } 2786 if (len > 0) 2787 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2788 BUS_DMASYNC_POSTREAD); 2789 while (len > 0 ) { 2790 if (count >= 0 && count-- == 0) 2791 goto out; 2792 if(dbch->pdb_tr != NULL){ 2793 /* we have a fragment in previous buffer */ 2794 int rlen; 2795 2796 offset = dbch->buf_offset; 2797 if (offset < 0) 2798 offset = - offset; 2799 buf = dbch->pdb_tr->buf + offset; 2800 rlen = dbch->xferq.psize - offset; 2801 if (firewire_debug) 2802 printf("rlen=%d, offset=%d\n", 2803 rlen, dbch->buf_offset); 2804 if (dbch->buf_offset < 0) { 2805 /* splitted in header, pull up */ 2806 char *p; 2807 2808 p = (char *)&pktbuf; 2809 bcopy(buf, p, rlen); 2810 p += rlen; 2811 /* this must be too long but harmless */ 2812 rlen = sizeof(pktbuf) - rlen; 2813 if (rlen < 0) 2814 printf("why rlen < 0\n"); 2815 bcopy(db_tr->buf, p, rlen); 2816 ld += rlen; 2817 len -= rlen; 2818 hlen = fwohci_arcv_swap(&pktbuf, sizeof(pktbuf)); 2819 if (hlen <= 0) { 2820 printf("hlen should be positive."); 2821 goto err; 2822 } 2823 offset = sizeof(pktbuf); 2824 vec[0].iov_base = (char *)&pktbuf; 2825 vec[0].iov_len = offset; 2826 } else { 2827 /* splitted in payload */ 2828 offset = rlen; 2829 vec[0].iov_base = buf; 2830 vec[0].iov_len = rlen; 2831 } 2832 fp=(struct fw_pkt *)vec[0].iov_base; 2833 nvec = 1; 2834 } else { 2835 /* no fragment in previous buffer */ 2836 fp=(struct fw_pkt *)ld; 2837 hlen = fwohci_arcv_swap(fp, len); 2838 if (hlen == 0) 2839 goto err; 2840 if (hlen < 0) { 2841 dbch->pdb_tr = db_tr; 2842 dbch->buf_offset = - dbch->buf_offset; 2843 /* sanity check */ 2844 if (resCount != 0) { 2845 printf("resCount=%d hlen=%d\n", 2846 resCount, hlen); 2847 goto err; 2848 } 2849 goto out; 2850 } 2851 offset = 0; 2852 nvec = 0; 2853 } 2854 plen = fwohci_get_plen(sc, dbch, fp) - offset; 2855 if (plen < 0) { 2856 /* minimum header size + trailer 2857 = sizeof(fw_pkt) so this shouldn't happens */ 2858 printf("plen(%d) is negative! offset=%d\n", 2859 plen, offset); 2860 goto err; 2861 } 2862 if (plen > 0) { 2863 len -= plen; 2864 if (len < 0) { 2865 dbch->pdb_tr = db_tr; 2866 if (firewire_debug) 2867 printf("splitted payload\n"); 2868 /* sanity check */ 2869 if (resCount != 0) { 2870 printf("resCount=%d plen=%d" 2871 " len=%d\n", 2872 resCount, plen, len); 2873 goto err; 2874 } 2875 goto out; 2876 } 2877 vec[nvec].iov_base = ld; 2878 vec[nvec].iov_len = plen; 2879 nvec ++; 2880 ld += plen; 2881 } 2882 dbch->buf_offset = ld - (uint8_t *)db_tr->buf; 2883 if (nvec == 0) 2884 printf("nvec == 0\n"); 2885 2886/* DMA result-code will be written at the tail of packet */ 2887 stat = FWOHCI_DMA_READ(*(uint32_t *)(ld - sizeof(struct fwohci_trailer))); 2888#if 0 2889 printf("plen: %d, stat %x\n", 2890 plen ,stat); 2891#endif 2892 spd = (stat >> 21) & 0x3; 2893 event = (stat >> 16) & 0x1f; 2894 switch (event) { 2895 case FWOHCIEV_ACKPEND: 2896#if 0 2897 printf("fwohci_arcv: ack pending tcode=0x%x..\n", fp->mode.common.tcode); 2898#endif 2899 /* fall through */ 2900 case FWOHCIEV_ACKCOMPL: 2901 { 2902 struct fw_rcv_buf rb; 2903 2904 if ((vec[nvec-1].iov_len -= 2905 sizeof(struct fwohci_trailer)) == 0) 2906 nvec--; 2907 rb.fc = &sc->fc; 2908 rb.vec = vec; 2909 rb.nvec = nvec; 2910 rb.spd = spd; 2911 fw_rcv(&rb); 2912 break; 2913 } 2914 case FWOHCIEV_BUSRST: 2915 if ((sc->fc.status != FWBUSRESET) && 2916 (sc->fc.status != FWBUSINIT)) 2917 printf("got BUSRST packet!?\n"); 2918 break; 2919 default: 2920 device_printf(sc->fc.dev, 2921 "Async DMA Receive error err=%02x %s" 2922 " plen=%d offset=%d len=%d status=0x%08x" 2923 " tcode=0x%x, stat=0x%08x\n", 2924 event, fwohcicode[event], plen, 2925 dbch->buf_offset, len, 2926 OREAD(sc, OHCI_DMACTL(off)), 2927 fp->mode.common.tcode, stat); 2928#if 1 /* XXX */ 2929 goto err; 2930#endif 2931 break; 2932 } 2933 pcnt ++; 2934 if (dbch->pdb_tr != NULL) { 2935 fwohci_arcv_free_buf(sc, dbch, dbch->pdb_tr, 2936 off, 1); 2937 dbch->pdb_tr = NULL; 2938 } 2939 2940 } 2941out: 2942 if (resCount == 0) { 2943 /* done on this buffer */ 2944 if (dbch->pdb_tr == NULL) { 2945 fwohci_arcv_free_buf(sc, dbch, db_tr, off, 1); 2946 dbch->buf_offset = 0; 2947 } else 2948 if (dbch->pdb_tr != db_tr) 2949 printf("pdb_tr != db_tr\n"); 2950 db_tr = STAILQ_NEXT(db_tr, link); 2951 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2952 >> OHCI_STATUS_SHIFT; 2953 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2954 & OHCI_COUNT_MASK; 2955 /* XXX check buffer overrun */ 2956 dbch->top = db_tr; 2957 } else { 2958 dbch->buf_offset = dbch->xferq.psize - resCount; 2959 break; 2960 } 2961 /* XXX make sure DMA is not dead */ 2962 } 2963#if 0 2964 if (pcnt < 1) 2965 printf("fwohci_arcv: no packets\n"); 2966#endif 2967 splx(s); 2968 return; 2969 2970err: 2971 device_printf(sc->fc.dev, "AR DMA status=%x, ", 2972 OREAD(sc, OHCI_DMACTL(off))); 2973 dbch->pdb_tr = NULL; 2974 /* skip until resCount != 0 */ 2975 printf(" skip buffer"); 2976 while (resCount == 0) { 2977 printf(" #"); 2978 fwohci_arcv_free_buf(sc, dbch, db_tr, off, 0); 2979 db_tr = STAILQ_NEXT(db_tr, link); 2980 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2981 & OHCI_COUNT_MASK; 2982 } 2983 printf(" done\n"); 2984 dbch->top = db_tr; 2985 dbch->buf_offset = dbch->xferq.psize - resCount; 2986 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 2987 splx(s); 2988} 2989