fwohci.c revision 169132
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 169132 2007-04-30 14:06:30Z simokawa $ 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 56#include <machine/bus.h> 57 58#if defined(__DragonFly__) || __FreeBSD_version < 500000 59#include <machine/clock.h> /* for DELAY() */ 60#endif 61 62#ifdef __DragonFly__ 63#include "firewire.h" 64#include "firewirereg.h" 65#include "fwdma.h" 66#include "fwohcireg.h" 67#include "fwohcivar.h" 68#include "firewire_phy.h" 69#else 70#include <dev/firewire/firewire.h> 71#include <dev/firewire/firewirereg.h> 72#include <dev/firewire/fwdma.h> 73#include <dev/firewire/fwohcireg.h> 74#include <dev/firewire/fwohcivar.h> 75#include <dev/firewire/firewire_phy.h> 76#endif 77 78#undef OHCI_DEBUG 79 80static int nocyclemaster = 0; 81SYSCTL_DECL(_hw_firewire); 82SYSCTL_INT(_hw_firewire, OID_AUTO, nocyclemaster, CTLFLAG_RW, &nocyclemaster, 0, 83 "Do not send cycle start packets"); 84 85static char dbcode[16][0x10]={"OUTM", "OUTL","INPM","INPL", 86 "STOR","LOAD","NOP ","STOP",}; 87 88static char dbkey[8][0x10]={"ST0", "ST1","ST2","ST3", 89 "UNDEF","REG","SYS","DEV"}; 90static char dbcond[4][0x10]={"NEV","C=1", "C=0", "ALL"}; 91char fwohcicode[32][0x20]={ 92 "No stat","Undef","long","miss Ack err", 93 "underrun","overrun","desc err", "data read err", 94 "data write err","bus reset","timeout","tcode err", 95 "Undef","Undef","unknown event","flushed", 96 "Undef","ack complete","ack pend","Undef", 97 "ack busy_X","ack busy_A","ack busy_B","Undef", 98 "Undef","Undef","Undef","ack tardy", 99 "Undef","ack data_err","ack type_err",""}; 100 101#define MAX_SPEED 3 102extern char *linkspeed[]; 103uint32_t tagbit[4] = { 1 << 28, 1 << 29, 1 << 30, 1 << 31}; 104 105static struct tcode_info tinfo[] = { 106/* hdr_len block flag*/ 107/* 0 WREQQ */ {16, FWTI_REQ | FWTI_TLABEL}, 108/* 1 WREQB */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 109/* 2 WRES */ {12, FWTI_RES}, 110/* 3 XXX */ { 0, 0}, 111/* 4 RREQQ */ {12, FWTI_REQ | FWTI_TLABEL}, 112/* 5 RREQB */ {16, FWTI_REQ | FWTI_TLABEL}, 113/* 6 RRESQ */ {16, FWTI_RES}, 114/* 7 RRESB */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 115/* 8 CYCS */ { 0, 0}, 116/* 9 LREQ */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 117/* a STREAM */ { 4, FWTI_REQ | FWTI_BLOCK_STR}, 118/* b LRES */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 119/* c XXX */ { 0, 0}, 120/* d XXX */ { 0, 0}, 121/* e PHY */ {12, FWTI_REQ}, 122/* f XXX */ { 0, 0} 123}; 124 125#define OHCI_WRITE_SIGMASK 0xffff0000 126#define OHCI_READ_SIGMASK 0xffff0000 127 128#define OWRITE(sc, r, x) bus_space_write_4((sc)->bst, (sc)->bsh, (r), (x)) 129#define OREAD(sc, r) bus_space_read_4((sc)->bst, (sc)->bsh, (r)) 130 131static void fwohci_ibr (struct firewire_comm *); 132static void fwohci_db_init (struct fwohci_softc *, struct fwohci_dbch *); 133static void fwohci_db_free (struct fwohci_dbch *); 134static void fwohci_arcv (struct fwohci_softc *, struct fwohci_dbch *, int); 135static void fwohci_txd (struct fwohci_softc *, struct fwohci_dbch *); 136static void fwohci_start_atq (struct firewire_comm *); 137static void fwohci_start_ats (struct firewire_comm *); 138static void fwohci_start (struct fwohci_softc *, struct fwohci_dbch *); 139static uint32_t fwphy_wrdata ( struct fwohci_softc *, uint32_t, uint32_t); 140static uint32_t fwphy_rddata ( struct fwohci_softc *, uint32_t); 141static int fwohci_rx_enable (struct fwohci_softc *, struct fwohci_dbch *); 142static int fwohci_tx_enable (struct fwohci_softc *, struct fwohci_dbch *); 143static int fwohci_irx_enable (struct firewire_comm *, int); 144static int fwohci_irx_disable (struct firewire_comm *, int); 145#if BYTE_ORDER == BIG_ENDIAN 146static void fwohci_irx_post (struct firewire_comm *, uint32_t *); 147#endif 148static int fwohci_itxbuf_enable (struct firewire_comm *, int); 149static int fwohci_itx_disable (struct firewire_comm *, int); 150static void fwohci_timeout (void *); 151static void fwohci_set_intr (struct firewire_comm *, int); 152 153static int fwohci_add_rx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int, struct fwdma_alloc *); 154static int fwohci_add_tx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int); 155static void dump_db (struct fwohci_softc *, uint32_t); 156static void print_db (struct fwohcidb_tr *, struct fwohcidb *, uint32_t , uint32_t); 157static void dump_dma (struct fwohci_softc *, uint32_t); 158static uint32_t fwohci_cyctimer (struct firewire_comm *); 159static void fwohci_rbuf_update (struct fwohci_softc *, int); 160static void fwohci_tbuf_update (struct fwohci_softc *, int); 161void fwohci_txbufdb (struct fwohci_softc *, int , struct fw_bulkxfer *); 162#if FWOHCI_TASKQUEUE 163static void fwohci_complete(void *, int); 164#endif 165 166/* 167 * memory allocated for DMA programs 168 */ 169#define DMA_PROG_ALLOC (8 * PAGE_SIZE) 170 171#define NDB FWMAXQUEUE 172 173#define OHCI_VERSION 0x00 174#define OHCI_ATRETRY 0x08 175#define OHCI_CROMHDR 0x18 176#define OHCI_BUS_OPT 0x20 177#define OHCI_BUSIRMC (1 << 31) 178#define OHCI_BUSCMC (1 << 30) 179#define OHCI_BUSISC (1 << 29) 180#define OHCI_BUSBMC (1 << 28) 181#define OHCI_BUSPMC (1 << 27) 182#define OHCI_BUSFNC OHCI_BUSIRMC | OHCI_BUSCMC | OHCI_BUSISC |\ 183 OHCI_BUSBMC | OHCI_BUSPMC 184 185#define OHCI_EUID_HI 0x24 186#define OHCI_EUID_LO 0x28 187 188#define OHCI_CROMPTR 0x34 189#define OHCI_HCCCTL 0x50 190#define OHCI_HCCCTLCLR 0x54 191#define OHCI_AREQHI 0x100 192#define OHCI_AREQHICLR 0x104 193#define OHCI_AREQLO 0x108 194#define OHCI_AREQLOCLR 0x10c 195#define OHCI_PREQHI 0x110 196#define OHCI_PREQHICLR 0x114 197#define OHCI_PREQLO 0x118 198#define OHCI_PREQLOCLR 0x11c 199#define OHCI_PREQUPPER 0x120 200 201#define OHCI_SID_BUF 0x64 202#define OHCI_SID_CNT 0x68 203#define OHCI_SID_ERR (1 << 31) 204#define OHCI_SID_CNT_MASK 0xffc 205 206#define OHCI_IT_STAT 0x90 207#define OHCI_IT_STATCLR 0x94 208#define OHCI_IT_MASK 0x98 209#define OHCI_IT_MASKCLR 0x9c 210 211#define OHCI_IR_STAT 0xa0 212#define OHCI_IR_STATCLR 0xa4 213#define OHCI_IR_MASK 0xa8 214#define OHCI_IR_MASKCLR 0xac 215 216#define OHCI_LNKCTL 0xe0 217#define OHCI_LNKCTLCLR 0xe4 218 219#define OHCI_PHYACCESS 0xec 220#define OHCI_CYCLETIMER 0xf0 221 222#define OHCI_DMACTL(off) (off) 223#define OHCI_DMACTLCLR(off) (off + 4) 224#define OHCI_DMACMD(off) (off + 0xc) 225#define OHCI_DMAMATCH(off) (off + 0x10) 226 227#define OHCI_ATQOFF 0x180 228#define OHCI_ATQCTL OHCI_ATQOFF 229#define OHCI_ATQCTLCLR (OHCI_ATQOFF + 4) 230#define OHCI_ATQCMD (OHCI_ATQOFF + 0xc) 231#define OHCI_ATQMATCH (OHCI_ATQOFF + 0x10) 232 233#define OHCI_ATSOFF 0x1a0 234#define OHCI_ATSCTL OHCI_ATSOFF 235#define OHCI_ATSCTLCLR (OHCI_ATSOFF + 4) 236#define OHCI_ATSCMD (OHCI_ATSOFF + 0xc) 237#define OHCI_ATSMATCH (OHCI_ATSOFF + 0x10) 238 239#define OHCI_ARQOFF 0x1c0 240#define OHCI_ARQCTL OHCI_ARQOFF 241#define OHCI_ARQCTLCLR (OHCI_ARQOFF + 4) 242#define OHCI_ARQCMD (OHCI_ARQOFF + 0xc) 243#define OHCI_ARQMATCH (OHCI_ARQOFF + 0x10) 244 245#define OHCI_ARSOFF 0x1e0 246#define OHCI_ARSCTL OHCI_ARSOFF 247#define OHCI_ARSCTLCLR (OHCI_ARSOFF + 4) 248#define OHCI_ARSCMD (OHCI_ARSOFF + 0xc) 249#define OHCI_ARSMATCH (OHCI_ARSOFF + 0x10) 250 251#define OHCI_ITOFF(CH) (0x200 + 0x10 * (CH)) 252#define OHCI_ITCTL(CH) (OHCI_ITOFF(CH)) 253#define OHCI_ITCTLCLR(CH) (OHCI_ITOFF(CH) + 4) 254#define OHCI_ITCMD(CH) (OHCI_ITOFF(CH) + 0xc) 255 256#define OHCI_IROFF(CH) (0x400 + 0x20 * (CH)) 257#define OHCI_IRCTL(CH) (OHCI_IROFF(CH)) 258#define OHCI_IRCTLCLR(CH) (OHCI_IROFF(CH) + 4) 259#define OHCI_IRCMD(CH) (OHCI_IROFF(CH) + 0xc) 260#define OHCI_IRMATCH(CH) (OHCI_IROFF(CH) + 0x10) 261 262d_ioctl_t fwohci_ioctl; 263 264/* 265 * Communication with PHY device 266 */ 267static uint32_t 268fwphy_wrdata( struct fwohci_softc *sc, uint32_t addr, uint32_t data) 269{ 270 uint32_t fun; 271 272 addr &= 0xf; 273 data &= 0xff; 274 275 fun = (PHYDEV_WRCMD | (addr << PHYDEV_REGADDR) | (data << PHYDEV_WRDATA)); 276 OWRITE(sc, OHCI_PHYACCESS, fun); 277 DELAY(100); 278 279 return(fwphy_rddata( sc, addr)); 280} 281 282static uint32_t 283fwohci_set_bus_manager(struct firewire_comm *fc, u_int node) 284{ 285 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 286 int i; 287 uint32_t bm; 288 289#define OHCI_CSR_DATA 0x0c 290#define OHCI_CSR_COMP 0x10 291#define OHCI_CSR_CONT 0x14 292#define OHCI_BUS_MANAGER_ID 0 293 294 OWRITE(sc, OHCI_CSR_DATA, node); 295 OWRITE(sc, OHCI_CSR_COMP, 0x3f); 296 OWRITE(sc, OHCI_CSR_CONT, OHCI_BUS_MANAGER_ID); 297 for (i = 0; !(OREAD(sc, OHCI_CSR_CONT) & (1<<31)) && (i < 1000); i++) 298 DELAY(10); 299 bm = OREAD(sc, OHCI_CSR_DATA); 300 if((bm & 0x3f) == 0x3f) 301 bm = node; 302 if (firewire_debug) 303 device_printf(sc->fc.dev, 304 "fw_set_bus_manager: %d->%d (loop=%d)\n", bm, node, i); 305 306 return(bm); 307} 308 309static uint32_t 310fwphy_rddata(struct fwohci_softc *sc, u_int addr) 311{ 312 uint32_t fun, stat; 313 u_int i, retry = 0; 314 315 addr &= 0xf; 316#define MAX_RETRY 100 317again: 318 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_REG_FAIL); 319 fun = PHYDEV_RDCMD | (addr << PHYDEV_REGADDR); 320 OWRITE(sc, OHCI_PHYACCESS, fun); 321 for ( i = 0 ; i < MAX_RETRY ; i ++ ){ 322 fun = OREAD(sc, OHCI_PHYACCESS); 323 if ((fun & PHYDEV_RDCMD) == 0 && (fun & PHYDEV_RDDONE) != 0) 324 break; 325 DELAY(100); 326 } 327 if(i >= MAX_RETRY) { 328 if (firewire_debug) 329 device_printf(sc->fc.dev, "phy read failed(1).\n"); 330 if (++retry < MAX_RETRY) { 331 DELAY(100); 332 goto again; 333 } 334 } 335 /* Make sure that SCLK is started */ 336 stat = OREAD(sc, FWOHCI_INTSTAT); 337 if ((stat & OHCI_INT_REG_FAIL) != 0 || 338 ((fun >> PHYDEV_REGADDR) & 0xf) != addr) { 339 if (firewire_debug) 340 device_printf(sc->fc.dev, "phy read failed(2).\n"); 341 if (++retry < MAX_RETRY) { 342 DELAY(100); 343 goto again; 344 } 345 } 346 if (firewire_debug || retry >= MAX_RETRY) 347 device_printf(sc->fc.dev, 348 "fwphy_rddata: 0x%x loop=%d, retry=%d\n", addr, i, retry); 349#undef MAX_RETRY 350 return((fun >> PHYDEV_RDDATA )& 0xff); 351} 352/* Device specific ioctl. */ 353int 354fwohci_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 355{ 356 struct firewire_softc *sc; 357 struct fwohci_softc *fc; 358 int unit = DEV2UNIT(dev); 359 int err = 0; 360 struct fw_reg_req_t *reg = (struct fw_reg_req_t *) data; 361 uint32_t *dmach = (uint32_t *) data; 362 363 sc = devclass_get_softc(firewire_devclass, unit); 364 if(sc == NULL){ 365 return(EINVAL); 366 } 367 fc = (struct fwohci_softc *)sc->fc; 368 369 if (!data) 370 return(EINVAL); 371 372 switch (cmd) { 373 case FWOHCI_WRREG: 374#define OHCI_MAX_REG 0x800 375 if(reg->addr <= OHCI_MAX_REG){ 376 OWRITE(fc, reg->addr, reg->data); 377 reg->data = OREAD(fc, reg->addr); 378 }else{ 379 err = EINVAL; 380 } 381 break; 382 case FWOHCI_RDREG: 383 if(reg->addr <= OHCI_MAX_REG){ 384 reg->data = OREAD(fc, reg->addr); 385 }else{ 386 err = EINVAL; 387 } 388 break; 389/* Read DMA descriptors for debug */ 390 case DUMPDMA: 391 if(*dmach <= OHCI_MAX_DMA_CH ){ 392 dump_dma(fc, *dmach); 393 dump_db(fc, *dmach); 394 }else{ 395 err = EINVAL; 396 } 397 break; 398/* Read/Write Phy registers */ 399#define OHCI_MAX_PHY_REG 0xf 400 case FWOHCI_RDPHYREG: 401 if (reg->addr <= OHCI_MAX_PHY_REG) 402 reg->data = fwphy_rddata(fc, reg->addr); 403 else 404 err = EINVAL; 405 break; 406 case FWOHCI_WRPHYREG: 407 if (reg->addr <= OHCI_MAX_PHY_REG) 408 reg->data = fwphy_wrdata(fc, reg->addr, reg->data); 409 else 410 err = EINVAL; 411 break; 412 default: 413 err = EINVAL; 414 break; 415 } 416 return err; 417} 418 419static int 420fwohci_probe_phy(struct fwohci_softc *sc, device_t dev) 421{ 422 uint32_t reg, reg2; 423 int e1394a = 1; 424/* 425 * probe PHY parameters 426 * 0. to prove PHY version, whether compliance of 1394a. 427 * 1. to probe maximum speed supported by the PHY and 428 * number of port supported by core-logic. 429 * It is not actually available port on your PC . 430 */ 431 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS); 432 DELAY(500); 433 434 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 435 436 if((reg >> 5) != 7 ){ 437 sc->fc.mode &= ~FWPHYASYST; 438 sc->fc.nport = reg & FW_PHY_NP; 439 sc->fc.speed = reg & FW_PHY_SPD >> 6; 440 if (sc->fc.speed > MAX_SPEED) { 441 device_printf(dev, "invalid speed %d (fixed to %d).\n", 442 sc->fc.speed, MAX_SPEED); 443 sc->fc.speed = MAX_SPEED; 444 } 445 device_printf(dev, 446 "Phy 1394 only %s, %d ports.\n", 447 linkspeed[sc->fc.speed], sc->fc.nport); 448 }else{ 449 reg2 = fwphy_rddata(sc, FW_PHY_ESPD_REG); 450 sc->fc.mode |= FWPHYASYST; 451 sc->fc.nport = reg & FW_PHY_NP; 452 sc->fc.speed = (reg2 & FW_PHY_ESPD) >> 5; 453 if (sc->fc.speed > MAX_SPEED) { 454 device_printf(dev, "invalid speed %d (fixed to %d).\n", 455 sc->fc.speed, MAX_SPEED); 456 sc->fc.speed = MAX_SPEED; 457 } 458 device_printf(dev, 459 "Phy 1394a available %s, %d ports.\n", 460 linkspeed[sc->fc.speed], sc->fc.nport); 461 462 /* check programPhyEnable */ 463 reg2 = fwphy_rddata(sc, 5); 464#if 0 465 if (e1394a && (OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_PRPHY)) { 466#else /* XXX force to enable 1394a */ 467 if (e1394a) { 468#endif 469 if (firewire_debug) 470 device_printf(dev, 471 "Enable 1394a Enhancements\n"); 472 /* enable EAA EMC */ 473 reg2 |= 0x03; 474 /* set aPhyEnhanceEnable */ 475 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_PHYEN); 476 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_PRPHY); 477 } else { 478 /* for safe */ 479 reg2 &= ~0x83; 480 } 481 reg2 = fwphy_wrdata(sc, 5, reg2); 482 } 483 484 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 485 if((reg >> 5) == 7 ){ 486 reg = fwphy_rddata(sc, 4); 487 reg |= 1 << 6; 488 fwphy_wrdata(sc, 4, reg); 489 reg = fwphy_rddata(sc, 4); 490 } 491 return 0; 492} 493 494 495void 496fwohci_reset(struct fwohci_softc *sc, device_t dev) 497{ 498 int i, max_rec, speed; 499 uint32_t reg, reg2; 500 struct fwohcidb_tr *db_tr; 501 502 /* Disable interrupts */ 503 OWRITE(sc, FWOHCI_INTMASKCLR, ~0); 504 505 /* Now stopping all DMA channels */ 506 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 507 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 508 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 509 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 510 511 OWRITE(sc, OHCI_IR_MASKCLR, ~0); 512 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 513 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 514 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 515 } 516 517 /* FLUSH FIFO and reset Transmitter/Reciever */ 518 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 519 if (firewire_debug) 520 device_printf(dev, "resetting OHCI..."); 521 i = 0; 522 while(OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_RESET) { 523 if (i++ > 100) break; 524 DELAY(1000); 525 } 526 if (firewire_debug) 527 printf("done (loop=%d)\n", i); 528 529 /* Probe phy */ 530 fwohci_probe_phy(sc, dev); 531 532 /* Probe link */ 533 reg = OREAD(sc, OHCI_BUS_OPT); 534 reg2 = reg | OHCI_BUSFNC; 535 max_rec = (reg & 0x0000f000) >> 12; 536 speed = (reg & 0x00000007); 537 device_printf(dev, "Link %s, max_rec %d bytes.\n", 538 linkspeed[speed], MAXREC(max_rec)); 539 /* XXX fix max_rec */ 540 sc->fc.maxrec = sc->fc.speed + 8; 541 if (max_rec != sc->fc.maxrec) { 542 reg2 = (reg2 & 0xffff0fff) | (sc->fc.maxrec << 12); 543 device_printf(dev, "max_rec %d -> %d\n", 544 MAXREC(max_rec), MAXREC(sc->fc.maxrec)); 545 } 546 if (firewire_debug) 547 device_printf(dev, "BUS_OPT 0x%x -> 0x%x\n", reg, reg2); 548 OWRITE(sc, OHCI_BUS_OPT, reg2); 549 550 /* Initialize registers */ 551 OWRITE(sc, OHCI_CROMHDR, sc->fc.config_rom[0]); 552 OWRITE(sc, OHCI_CROMPTR, sc->crom_dma.bus_addr); 553 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_BIGEND); 554 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_POSTWR); 555 OWRITE(sc, OHCI_SID_BUF, sc->sid_dma.bus_addr); 556 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_SID); 557 558 /* Enable link */ 559 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LINKEN); 560 561 /* Force to start async RX DMA */ 562 sc->arrq.xferq.flag &= ~FWXFERQ_RUNNING; 563 sc->arrs.xferq.flag &= ~FWXFERQ_RUNNING; 564 fwohci_rx_enable(sc, &sc->arrq); 565 fwohci_rx_enable(sc, &sc->arrs); 566 567 /* Initialize async TX */ 568 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 569 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 570 571 /* AT Retries */ 572 OWRITE(sc, FWOHCI_RETRY, 573 /* CycleLimit PhyRespRetries ATRespRetries ATReqRetries */ 574 (0xffff << 16 ) | (0x0f << 8) | (0x0f << 4) | 0x0f) ; 575 576 sc->atrq.top = STAILQ_FIRST(&sc->atrq.db_trq); 577 sc->atrs.top = STAILQ_FIRST(&sc->atrs.db_trq); 578 sc->atrq.bottom = sc->atrq.top; 579 sc->atrs.bottom = sc->atrs.top; 580 581 for( i = 0, db_tr = sc->atrq.top; i < sc->atrq.ndb ; 582 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 583 db_tr->xfer = NULL; 584 } 585 for( i = 0, db_tr = sc->atrs.top; i < sc->atrs.ndb ; 586 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 587 db_tr->xfer = NULL; 588 } 589 590 591 /* Enable interrupts */ 592 OWRITE(sc, FWOHCI_INTMASK, 593 OHCI_INT_ERR | OHCI_INT_PHY_SID 594 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 595 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 596 | OHCI_INT_PHY_BUS_R | OHCI_INT_PW_ERR); 597 fwohci_set_intr(&sc->fc, 1); 598 599} 600 601int 602fwohci_init(struct fwohci_softc *sc, device_t dev) 603{ 604 int i, mver; 605 uint32_t reg; 606 uint8_t ui[8]; 607 608#if FWOHCI_TASKQUEUE 609 TASK_INIT(&sc->fwohci_task_complete, 0, fwohci_complete, sc); 610#endif 611 612/* OHCI version */ 613 reg = OREAD(sc, OHCI_VERSION); 614 mver = (reg >> 16) & 0xff; 615 device_printf(dev, "OHCI version %x.%x (ROM=%d)\n", 616 mver, reg & 0xff, (reg>>24) & 1); 617 if (mver < 1 || mver > 9) { 618 device_printf(dev, "invalid OHCI version\n"); 619 return (ENXIO); 620 } 621 622/* Available Isochronous DMA channel probe */ 623 OWRITE(sc, OHCI_IT_MASK, 0xffffffff); 624 OWRITE(sc, OHCI_IR_MASK, 0xffffffff); 625 reg = OREAD(sc, OHCI_IT_MASK) & OREAD(sc, OHCI_IR_MASK); 626 OWRITE(sc, OHCI_IT_MASKCLR, 0xffffffff); 627 OWRITE(sc, OHCI_IR_MASKCLR, 0xffffffff); 628 for (i = 0; i < 0x20; i++) 629 if ((reg & (1 << i)) == 0) 630 break; 631 sc->fc.nisodma = i; 632 device_printf(dev, "No. of Isochronous channels is %d.\n", i); 633 if (i == 0) 634 return (ENXIO); 635 636 sc->fc.arq = &sc->arrq.xferq; 637 sc->fc.ars = &sc->arrs.xferq; 638 sc->fc.atq = &sc->atrq.xferq; 639 sc->fc.ats = &sc->atrs.xferq; 640 641 sc->arrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 642 sc->arrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 643 sc->atrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 644 sc->atrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 645 646 sc->arrq.xferq.start = NULL; 647 sc->arrs.xferq.start = NULL; 648 sc->atrq.xferq.start = fwohci_start_atq; 649 sc->atrs.xferq.start = fwohci_start_ats; 650 651 sc->arrq.xferq.buf = NULL; 652 sc->arrs.xferq.buf = NULL; 653 sc->atrq.xferq.buf = NULL; 654 sc->atrs.xferq.buf = NULL; 655 656 sc->arrq.xferq.dmach = -1; 657 sc->arrs.xferq.dmach = -1; 658 sc->atrq.xferq.dmach = -1; 659 sc->atrs.xferq.dmach = -1; 660 661 sc->arrq.ndesc = 1; 662 sc->arrs.ndesc = 1; 663 sc->atrq.ndesc = 8; /* equal to maximum of mbuf chains */ 664 sc->atrs.ndesc = 2; 665 666 sc->arrq.ndb = NDB; 667 sc->arrs.ndb = NDB / 2; 668 sc->atrq.ndb = NDB; 669 sc->atrs.ndb = NDB / 2; 670 671 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 672 sc->fc.it[i] = &sc->it[i].xferq; 673 sc->fc.ir[i] = &sc->ir[i].xferq; 674 sc->it[i].xferq.dmach = i; 675 sc->ir[i].xferq.dmach = i; 676 sc->it[i].ndb = 0; 677 sc->ir[i].ndb = 0; 678 } 679 680 sc->fc.tcode = tinfo; 681 sc->fc.dev = dev; 682 683 sc->fc.config_rom = fwdma_malloc(&sc->fc, CROMSIZE, CROMSIZE, 684 &sc->crom_dma, BUS_DMA_WAITOK); 685 if(sc->fc.config_rom == NULL){ 686 device_printf(dev, "config_rom alloc failed."); 687 return ENOMEM; 688 } 689 690#if 0 691 bzero(&sc->fc.config_rom[0], CROMSIZE); 692 sc->fc.config_rom[1] = 0x31333934; 693 sc->fc.config_rom[2] = 0xf000a002; 694 sc->fc.config_rom[3] = OREAD(sc, OHCI_EUID_HI); 695 sc->fc.config_rom[4] = OREAD(sc, OHCI_EUID_LO); 696 sc->fc.config_rom[5] = 0; 697 sc->fc.config_rom[0] = (4 << 24) | (5 << 16); 698 699 sc->fc.config_rom[0] |= fw_crc16(&sc->fc.config_rom[1], 5*4); 700#endif 701 702 703/* SID recieve buffer must align 2^11 */ 704#define OHCI_SIDSIZE (1 << 11) 705 sc->sid_buf = fwdma_malloc(&sc->fc, OHCI_SIDSIZE, OHCI_SIDSIZE, 706 &sc->sid_dma, BUS_DMA_WAITOK); 707 if (sc->sid_buf == NULL) { 708 device_printf(dev, "sid_buf alloc failed."); 709 return ENOMEM; 710 } 711 712 fwdma_malloc(&sc->fc, sizeof(uint32_t), sizeof(uint32_t), 713 &sc->dummy_dma, BUS_DMA_WAITOK); 714 715 if (sc->dummy_dma.v_addr == NULL) { 716 device_printf(dev, "dummy_dma alloc failed."); 717 return ENOMEM; 718 } 719 720 fwohci_db_init(sc, &sc->arrq); 721 if ((sc->arrq.flags & FWOHCI_DBCH_INIT) == 0) 722 return ENOMEM; 723 724 fwohci_db_init(sc, &sc->arrs); 725 if ((sc->arrs.flags & FWOHCI_DBCH_INIT) == 0) 726 return ENOMEM; 727 728 fwohci_db_init(sc, &sc->atrq); 729 if ((sc->atrq.flags & FWOHCI_DBCH_INIT) == 0) 730 return ENOMEM; 731 732 fwohci_db_init(sc, &sc->atrs); 733 if ((sc->atrs.flags & FWOHCI_DBCH_INIT) == 0) 734 return ENOMEM; 735 736 sc->fc.eui.hi = OREAD(sc, FWOHCIGUID_H); 737 sc->fc.eui.lo = OREAD(sc, FWOHCIGUID_L); 738 for( i = 0 ; i < 8 ; i ++) 739 ui[i] = FW_EUI64_BYTE(&sc->fc.eui,i); 740 device_printf(dev, "EUI64 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", 741 ui[0], ui[1], ui[2], ui[3], ui[4], ui[5], ui[6], ui[7]); 742 743 sc->fc.ioctl = fwohci_ioctl; 744 sc->fc.cyctimer = fwohci_cyctimer; 745 sc->fc.set_bmr = fwohci_set_bus_manager; 746 sc->fc.ibr = fwohci_ibr; 747 sc->fc.irx_enable = fwohci_irx_enable; 748 sc->fc.irx_disable = fwohci_irx_disable; 749 750 sc->fc.itx_enable = fwohci_itxbuf_enable; 751 sc->fc.itx_disable = fwohci_itx_disable; 752#if BYTE_ORDER == BIG_ENDIAN 753 sc->fc.irx_post = fwohci_irx_post; 754#else 755 sc->fc.irx_post = NULL; 756#endif 757 sc->fc.itx_post = NULL; 758 sc->fc.timeout = fwohci_timeout; 759 sc->fc.poll = fwohci_poll; 760 sc->fc.set_intr = fwohci_set_intr; 761 762 sc->intmask = sc->irstat = sc->itstat = 0; 763 764 fw_init(&sc->fc); 765 fwohci_reset(sc, dev); 766 767 return 0; 768} 769 770void 771fwohci_timeout(void *arg) 772{ 773 struct fwohci_softc *sc; 774 775 sc = (struct fwohci_softc *)arg; 776} 777 778uint32_t 779fwohci_cyctimer(struct firewire_comm *fc) 780{ 781 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 782 return(OREAD(sc, OHCI_CYCLETIMER)); 783} 784 785int 786fwohci_detach(struct fwohci_softc *sc, device_t dev) 787{ 788 int i; 789 790 if (sc->sid_buf != NULL) 791 fwdma_free(&sc->fc, &sc->sid_dma); 792 if (sc->fc.config_rom != NULL) 793 fwdma_free(&sc->fc, &sc->crom_dma); 794 795 fwohci_db_free(&sc->arrq); 796 fwohci_db_free(&sc->arrs); 797 798 fwohci_db_free(&sc->atrq); 799 fwohci_db_free(&sc->atrs); 800 801 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 802 fwohci_db_free(&sc->it[i]); 803 fwohci_db_free(&sc->ir[i]); 804 } 805 806 return 0; 807} 808 809#define LAST_DB(dbtr, db) do { \ 810 struct fwohcidb_tr *_dbtr = (dbtr); \ 811 int _cnt = _dbtr->dbcnt; \ 812 db = &_dbtr->db[ (_cnt > 2) ? (_cnt -1) : 0]; \ 813} while (0) 814 815static void 816fwohci_execute_db(void *arg, bus_dma_segment_t *segs, int nseg, int error) 817{ 818 struct fwohcidb_tr *db_tr; 819 struct fwohcidb *db; 820 bus_dma_segment_t *s; 821 int i; 822 823 db_tr = (struct fwohcidb_tr *)arg; 824 db = &db_tr->db[db_tr->dbcnt]; 825 if (error) { 826 if (firewire_debug || error != EFBIG) 827 printf("fwohci_execute_db: error=%d\n", error); 828 return; 829 } 830 for (i = 0; i < nseg; i++) { 831 s = &segs[i]; 832 FWOHCI_DMA_WRITE(db->db.desc.addr, s->ds_addr); 833 FWOHCI_DMA_WRITE(db->db.desc.cmd, s->ds_len); 834 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 835 db++; 836 db_tr->dbcnt++; 837 } 838} 839 840static void 841fwohci_execute_db2(void *arg, bus_dma_segment_t *segs, int nseg, 842 bus_size_t size, int error) 843{ 844 fwohci_execute_db(arg, segs, nseg, error); 845} 846 847static void 848fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 849{ 850 int i, s; 851 int tcode, hdr_len, pl_off; 852 int fsegment = -1; 853 uint32_t off; 854 struct fw_xfer *xfer; 855 struct fw_pkt *fp; 856 struct fwohci_txpkthdr *ohcifp; 857 struct fwohcidb_tr *db_tr; 858 struct fwohcidb *db; 859 uint32_t *ld; 860 struct tcode_info *info; 861 static int maxdesc=0; 862 863 if(&sc->atrq == dbch){ 864 off = OHCI_ATQOFF; 865 }else if(&sc->atrs == dbch){ 866 off = OHCI_ATSOFF; 867 }else{ 868 return; 869 } 870 871 if (dbch->flags & FWOHCI_DBCH_FULL) 872 return; 873 874 s = splfw(); 875 db_tr = dbch->top; 876txloop: 877 xfer = STAILQ_FIRST(&dbch->xferq.q); 878 if(xfer == NULL){ 879 goto kick; 880 } 881 if(dbch->xferq.queued == 0 ){ 882 device_printf(sc->fc.dev, "TX queue empty\n"); 883 } 884 STAILQ_REMOVE_HEAD(&dbch->xferq.q, link); 885 db_tr->xfer = xfer; 886 xfer->state = FWXF_START; 887 888 fp = &xfer->send.hdr; 889 tcode = fp->mode.common.tcode; 890 891 ohcifp = (struct fwohci_txpkthdr *) db_tr->db[1].db.immed; 892 info = &tinfo[tcode]; 893 hdr_len = pl_off = info->hdr_len; 894 895 ld = &ohcifp->mode.ld[0]; 896 ld[0] = ld[1] = ld[2] = ld[3] = 0; 897 for( i = 0 ; i < pl_off ; i+= 4) 898 ld[i/4] = fp->mode.ld[i/4]; 899 900 ohcifp->mode.common.spd = xfer->send.spd & 0x7; 901 if (tcode == FWTCODE_STREAM ){ 902 hdr_len = 8; 903 ohcifp->mode.stream.len = fp->mode.stream.len; 904 } else if (tcode == FWTCODE_PHY) { 905 hdr_len = 12; 906 ld[1] = fp->mode.ld[1]; 907 ld[2] = fp->mode.ld[2]; 908 ohcifp->mode.common.spd = 0; 909 ohcifp->mode.common.tcode = FWOHCITCODE_PHY; 910 } else { 911 ohcifp->mode.asycomm.dst = fp->mode.hdr.dst; 912 ohcifp->mode.asycomm.srcbus = OHCI_ASYSRCBUS; 913 ohcifp->mode.asycomm.tlrt |= FWRETRY_X; 914 } 915 db = &db_tr->db[0]; 916 FWOHCI_DMA_WRITE(db->db.desc.cmd, 917 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | hdr_len); 918 FWOHCI_DMA_WRITE(db->db.desc.addr, 0); 919 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 920/* Specify bound timer of asy. responce */ 921 if(&sc->atrs == dbch){ 922 FWOHCI_DMA_WRITE(db->db.desc.res, 923 (OREAD(sc, OHCI_CYCLETIMER) >> 12) + (1 << 13)); 924 } 925#if BYTE_ORDER == BIG_ENDIAN 926 if (tcode == FWTCODE_WREQQ || tcode == FWTCODE_RRESQ) 927 hdr_len = 12; 928 for (i = 0; i < hdr_len/4; i ++) 929 FWOHCI_DMA_WRITE(ld[i], ld[i]); 930#endif 931 932again: 933 db_tr->dbcnt = 2; 934 db = &db_tr->db[db_tr->dbcnt]; 935 if (xfer->send.pay_len > 0) { 936 int err; 937 /* handle payload */ 938 if (xfer->mbuf == NULL) { 939 err = bus_dmamap_load(dbch->dmat, db_tr->dma_map, 940 &xfer->send.payload[0], xfer->send.pay_len, 941 fwohci_execute_db, db_tr, 942 /*flags*/0); 943 } else { 944 /* XXX we can handle only 6 (=8-2) mbuf chains */ 945 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 946 xfer->mbuf, 947 fwohci_execute_db2, db_tr, 948 /* flags */0); 949 if (err == EFBIG) { 950 struct mbuf *m0; 951 952 if (firewire_debug) 953 device_printf(sc->fc.dev, "EFBIG.\n"); 954 m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 955 if (m0 != NULL) { 956 m_copydata(xfer->mbuf, 0, 957 xfer->mbuf->m_pkthdr.len, 958 mtod(m0, caddr_t)); 959 m0->m_len = m0->m_pkthdr.len = 960 xfer->mbuf->m_pkthdr.len; 961 m_freem(xfer->mbuf); 962 xfer->mbuf = m0; 963 goto again; 964 } 965 device_printf(sc->fc.dev, "m_getcl failed.\n"); 966 } 967 } 968 if (err) 969 printf("dmamap_load: err=%d\n", err); 970 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 971 BUS_DMASYNC_PREWRITE); 972#if 0 /* OHCI_OUTPUT_MODE == 0 */ 973 for (i = 2; i < db_tr->dbcnt; i++) 974 FWOHCI_DMA_SET(db_tr->db[i].db.desc.cmd, 975 OHCI_OUTPUT_MORE); 976#endif 977 } 978 if (maxdesc < db_tr->dbcnt) { 979 maxdesc = db_tr->dbcnt; 980 if (firewire_debug) 981 device_printf(sc->fc.dev, "maxdesc: %d\n", maxdesc); 982 } 983 /* last db */ 984 LAST_DB(db_tr, db); 985 FWOHCI_DMA_SET(db->db.desc.cmd, 986 OHCI_OUTPUT_LAST | OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 987 FWOHCI_DMA_WRITE(db->db.desc.depend, 988 STAILQ_NEXT(db_tr, link)->bus_addr); 989 990 if(fsegment == -1 ) 991 fsegment = db_tr->dbcnt; 992 if (dbch->pdb_tr != NULL) { 993 LAST_DB(dbch->pdb_tr, db); 994 FWOHCI_DMA_SET(db->db.desc.depend, db_tr->dbcnt); 995 } 996 dbch->pdb_tr = db_tr; 997 db_tr = STAILQ_NEXT(db_tr, link); 998 if(db_tr != dbch->bottom){ 999 goto txloop; 1000 } else { 1001 device_printf(sc->fc.dev, "fwohci_start: lack of db_trq\n"); 1002 dbch->flags |= FWOHCI_DBCH_FULL; 1003 } 1004kick: 1005 /* kick asy q */ 1006 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1007 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1008 1009 if(dbch->xferq.flag & FWXFERQ_RUNNING) { 1010 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 1011 } else { 1012 if (firewire_debug) 1013 device_printf(sc->fc.dev, "start AT DMA status=%x\n", 1014 OREAD(sc, OHCI_DMACTL(off))); 1015 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | fsegment); 1016 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 1017 dbch->xferq.flag |= FWXFERQ_RUNNING; 1018 } 1019 1020 dbch->top = db_tr; 1021 splx(s); 1022 return; 1023} 1024 1025static void 1026fwohci_start_atq(struct firewire_comm *fc) 1027{ 1028 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1029 fwohci_start( sc, &(sc->atrq)); 1030 return; 1031} 1032 1033static void 1034fwohci_start_ats(struct firewire_comm *fc) 1035{ 1036 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1037 fwohci_start( sc, &(sc->atrs)); 1038 return; 1039} 1040 1041void 1042fwohci_txd(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1043{ 1044 int s, ch, err = 0; 1045 struct fwohcidb_tr *tr; 1046 struct fwohcidb *db; 1047 struct fw_xfer *xfer; 1048 uint32_t off; 1049 u_int stat, status; 1050 int packets; 1051 struct firewire_comm *fc = (struct firewire_comm *)sc; 1052 1053 if(&sc->atrq == dbch){ 1054 off = OHCI_ATQOFF; 1055 ch = ATRQ_CH; 1056 }else if(&sc->atrs == dbch){ 1057 off = OHCI_ATSOFF; 1058 ch = ATRS_CH; 1059 }else{ 1060 return; 1061 } 1062 s = splfw(); 1063 tr = dbch->bottom; 1064 packets = 0; 1065 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 1066 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 1067 while(dbch->xferq.queued > 0){ 1068 LAST_DB(tr, db); 1069 status = FWOHCI_DMA_READ(db->db.desc.res) >> OHCI_STATUS_SHIFT; 1070 if(!(status & OHCI_CNTL_DMA_ACTIVE)){ 1071 if (fc->status != FWBUSRESET) 1072 /* maybe out of order?? */ 1073 goto out; 1074 } 1075 bus_dmamap_sync(dbch->dmat, tr->dma_map, 1076 BUS_DMASYNC_POSTWRITE); 1077 bus_dmamap_unload(dbch->dmat, tr->dma_map); 1078#if 1 1079 if (firewire_debug > 1) 1080 dump_db(sc, ch); 1081#endif 1082 if(status & OHCI_CNTL_DMA_DEAD) { 1083 /* Stop DMA */ 1084 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1085 device_printf(sc->fc.dev, "force reset AT FIFO\n"); 1086 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_LINKEN); 1087 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS | OHCI_HCC_LINKEN); 1088 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1089 } 1090 stat = status & FWOHCIEV_MASK; 1091 switch(stat){ 1092 case FWOHCIEV_ACKPEND: 1093 case FWOHCIEV_ACKCOMPL: 1094 err = 0; 1095 break; 1096 case FWOHCIEV_ACKBSA: 1097 case FWOHCIEV_ACKBSB: 1098 case FWOHCIEV_ACKBSX: 1099 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1100 err = EBUSY; 1101 break; 1102 case FWOHCIEV_FLUSHED: 1103 case FWOHCIEV_ACKTARD: 1104 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1105 err = EAGAIN; 1106 break; 1107 case FWOHCIEV_MISSACK: 1108 case FWOHCIEV_UNDRRUN: 1109 case FWOHCIEV_OVRRUN: 1110 case FWOHCIEV_DESCERR: 1111 case FWOHCIEV_DTRDERR: 1112 case FWOHCIEV_TIMEOUT: 1113 case FWOHCIEV_TCODERR: 1114 case FWOHCIEV_UNKNOWN: 1115 case FWOHCIEV_ACKDERR: 1116 case FWOHCIEV_ACKTERR: 1117 default: 1118 device_printf(sc->fc.dev, "txd err=%2x %s\n", 1119 stat, fwohcicode[stat]); 1120 err = EINVAL; 1121 break; 1122 } 1123 if (tr->xfer != NULL) { 1124 xfer = tr->xfer; 1125 if (xfer->state == FWXF_RCVD) { 1126#if 0 1127 if (firewire_debug) 1128 printf("already rcvd\n"); 1129#endif 1130 fw_xfer_done(xfer); 1131 } else { 1132 xfer->state = FWXF_SENT; 1133 if (err == EBUSY && fc->status != FWBUSRESET) { 1134 xfer->state = FWXF_BUSY; 1135 xfer->resp = err; 1136 xfer->recv.pay_len = 0; 1137 fw_xfer_done(xfer); 1138 } else if (stat != FWOHCIEV_ACKPEND) { 1139 if (stat != FWOHCIEV_ACKCOMPL) 1140 xfer->state = FWXF_SENTERR; 1141 xfer->resp = err; 1142 xfer->recv.pay_len = 0; 1143 fw_xfer_done(xfer); 1144 } 1145 } 1146 /* 1147 * The watchdog timer takes care of split 1148 * transcation timeout for ACKPEND case. 1149 */ 1150 } else { 1151 printf("this shouldn't happen\n"); 1152 } 1153 dbch->xferq.queued --; 1154 tr->xfer = NULL; 1155 1156 packets ++; 1157 tr = STAILQ_NEXT(tr, link); 1158 dbch->bottom = tr; 1159 if (dbch->bottom == dbch->top) { 1160 /* we reaches the end of context program */ 1161 if (firewire_debug && dbch->xferq.queued > 0) 1162 printf("queued > 0\n"); 1163 break; 1164 } 1165 } 1166out: 1167 if ((dbch->flags & FWOHCI_DBCH_FULL) && packets > 0) { 1168 printf("make free slot\n"); 1169 dbch->flags &= ~FWOHCI_DBCH_FULL; 1170 fwohci_start(sc, dbch); 1171 } 1172 splx(s); 1173} 1174 1175static void 1176fwohci_db_free(struct fwohci_dbch *dbch) 1177{ 1178 struct fwohcidb_tr *db_tr; 1179 int idb; 1180 1181 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1182 return; 1183 1184 for(db_tr = STAILQ_FIRST(&dbch->db_trq), idb = 0; idb < dbch->ndb; 1185 db_tr = STAILQ_NEXT(db_tr, link), idb++){ 1186 if ((dbch->xferq.flag & FWXFERQ_EXTBUF) == 0 && 1187 db_tr->buf != NULL) { 1188 fwdma_free_size(dbch->dmat, db_tr->dma_map, 1189 db_tr->buf, dbch->xferq.psize); 1190 db_tr->buf = NULL; 1191 } else if (db_tr->dma_map != NULL) 1192 bus_dmamap_destroy(dbch->dmat, db_tr->dma_map); 1193 } 1194 dbch->ndb = 0; 1195 db_tr = STAILQ_FIRST(&dbch->db_trq); 1196 fwdma_free_multiseg(dbch->am); 1197 free(db_tr, M_FW); 1198 STAILQ_INIT(&dbch->db_trq); 1199 dbch->flags &= ~FWOHCI_DBCH_INIT; 1200} 1201 1202static void 1203fwohci_db_init(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1204{ 1205 int idb; 1206 struct fwohcidb_tr *db_tr; 1207 1208 if ((dbch->flags & FWOHCI_DBCH_INIT) != 0) 1209 goto out; 1210 1211 /* create dma_tag for buffers */ 1212#define MAX_REQCOUNT 0xffff 1213 if (bus_dma_tag_create(/*parent*/ sc->fc.dmat, 1214 /*alignment*/ 1, /*boundary*/ 0, 1215 /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 1216 /*highaddr*/ BUS_SPACE_MAXADDR, 1217 /*filter*/NULL, /*filterarg*/NULL, 1218 /*maxsize*/ dbch->xferq.psize, 1219 /*nsegments*/ dbch->ndesc > 3 ? dbch->ndesc - 2 : 1, 1220 /*maxsegsz*/ MAX_REQCOUNT, 1221 /*flags*/ 0, 1222#if defined(__FreeBSD__) && __FreeBSD_version >= 501102 1223 /*lockfunc*/busdma_lock_mutex, 1224 /*lockarg*/&Giant, 1225#endif 1226 &dbch->dmat)) 1227 return; 1228 1229 /* allocate DB entries and attach one to each DMA channels */ 1230 /* DB entry must start at 16 bytes bounary. */ 1231 STAILQ_INIT(&dbch->db_trq); 1232 db_tr = (struct fwohcidb_tr *) 1233 malloc(sizeof(struct fwohcidb_tr) * dbch->ndb, 1234 M_FW, M_WAITOK | M_ZERO); 1235 if(db_tr == NULL){ 1236 printf("fwohci_db_init: malloc(1) failed\n"); 1237 return; 1238 } 1239 1240#define DB_SIZE(x) (sizeof(struct fwohcidb) * (x)->ndesc) 1241 dbch->am = fwdma_malloc_multiseg(&sc->fc, DB_SIZE(dbch), 1242 DB_SIZE(dbch), dbch->ndb, BUS_DMA_WAITOK); 1243 if (dbch->am == NULL) { 1244 printf("fwohci_db_init: fwdma_malloc_multiseg failed\n"); 1245 free(db_tr, M_FW); 1246 return; 1247 } 1248 /* Attach DB to DMA ch. */ 1249 for(idb = 0 ; idb < dbch->ndb ; idb++){ 1250 db_tr->dbcnt = 0; 1251 db_tr->db = (struct fwohcidb *)fwdma_v_addr(dbch->am, idb); 1252 db_tr->bus_addr = fwdma_bus_addr(dbch->am, idb); 1253 /* create dmamap for buffers */ 1254 /* XXX do we need 4bytes alignment tag? */ 1255 /* XXX don't alloc dma_map for AR */ 1256 if (bus_dmamap_create(dbch->dmat, 0, &db_tr->dma_map) != 0) { 1257 printf("bus_dmamap_create failed\n"); 1258 dbch->flags = FWOHCI_DBCH_INIT; /* XXX fake */ 1259 fwohci_db_free(dbch); 1260 return; 1261 } 1262 STAILQ_INSERT_TAIL(&dbch->db_trq, db_tr, link); 1263 if (dbch->xferq.flag & FWXFERQ_EXTBUF) { 1264 if (idb % dbch->xferq.bnpacket == 0) 1265 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1266 ].start = (caddr_t)db_tr; 1267 if ((idb + 1) % dbch->xferq.bnpacket == 0) 1268 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1269 ].end = (caddr_t)db_tr; 1270 } 1271 db_tr++; 1272 } 1273 STAILQ_LAST(&dbch->db_trq, fwohcidb_tr,link)->link.stqe_next 1274 = STAILQ_FIRST(&dbch->db_trq); 1275out: 1276 dbch->xferq.queued = 0; 1277 dbch->pdb_tr = NULL; 1278 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1279 dbch->bottom = dbch->top; 1280 dbch->flags = FWOHCI_DBCH_INIT; 1281} 1282 1283static int 1284fwohci_itx_disable(struct firewire_comm *fc, int dmach) 1285{ 1286 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1287 1288 OWRITE(sc, OHCI_ITCTLCLR(dmach), 1289 OHCI_CNTL_DMA_RUN | OHCI_CNTL_CYCMATCH_S); 1290 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1291 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1292 /* XXX we cannot free buffers until the DMA really stops */ 1293 pause("fwitxd", hz); 1294 fwohci_db_free(&sc->it[dmach]); 1295 sc->it[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1296 return 0; 1297} 1298 1299static int 1300fwohci_irx_disable(struct firewire_comm *fc, int dmach) 1301{ 1302 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1303 1304 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1305 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1306 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1307 /* XXX we cannot free buffers until the DMA really stops */ 1308 pause("fwirxd", hz); 1309 fwohci_db_free(&sc->ir[dmach]); 1310 sc->ir[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1311 return 0; 1312} 1313 1314#if BYTE_ORDER == BIG_ENDIAN 1315static void 1316fwohci_irx_post (struct firewire_comm *fc , uint32_t *qld) 1317{ 1318 qld[0] = FWOHCI_DMA_READ(qld[0]); 1319 return; 1320} 1321#endif 1322 1323static int 1324fwohci_tx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1325{ 1326 int err = 0; 1327 int idb, z, i, dmach = 0, ldesc; 1328 uint32_t off = 0; 1329 struct fwohcidb_tr *db_tr; 1330 struct fwohcidb *db; 1331 1332 if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){ 1333 err = EINVAL; 1334 return err; 1335 } 1336 z = dbch->ndesc; 1337 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1338 if( &sc->it[dmach] == dbch){ 1339 off = OHCI_ITOFF(dmach); 1340 break; 1341 } 1342 } 1343 if(off == 0){ 1344 err = EINVAL; 1345 return err; 1346 } 1347 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1348 return err; 1349 dbch->xferq.flag |= FWXFERQ_RUNNING; 1350 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1351 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1352 } 1353 db_tr = dbch->top; 1354 for (idb = 0; idb < dbch->ndb; idb ++) { 1355 fwohci_add_tx_buf(dbch, db_tr, idb); 1356 if(STAILQ_NEXT(db_tr, link) == NULL){ 1357 break; 1358 } 1359 db = db_tr->db; 1360 ldesc = db_tr->dbcnt - 1; 1361 FWOHCI_DMA_WRITE(db[0].db.desc.depend, 1362 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1363 db[ldesc].db.desc.depend = db[0].db.desc.depend; 1364 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1365 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1366 FWOHCI_DMA_SET( 1367 db[ldesc].db.desc.cmd, 1368 OHCI_INTERRUPT_ALWAYS); 1369 /* OHCI 1.1 and above */ 1370 FWOHCI_DMA_SET( 1371 db[0].db.desc.cmd, 1372 OHCI_INTERRUPT_ALWAYS); 1373 } 1374 } 1375 db_tr = STAILQ_NEXT(db_tr, link); 1376 } 1377 FWOHCI_DMA_CLEAR( 1378 dbch->bottom->db[dbch->bottom->dbcnt - 1].db.desc.depend, 0xf); 1379 return err; 1380} 1381 1382static int 1383fwohci_rx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1384{ 1385 int err = 0; 1386 int idb, z, i, dmach = 0, ldesc; 1387 uint32_t off = 0; 1388 struct fwohcidb_tr *db_tr; 1389 struct fwohcidb *db; 1390 1391 z = dbch->ndesc; 1392 if(&sc->arrq == dbch){ 1393 off = OHCI_ARQOFF; 1394 }else if(&sc->arrs == dbch){ 1395 off = OHCI_ARSOFF; 1396 }else{ 1397 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1398 if( &sc->ir[dmach] == dbch){ 1399 off = OHCI_IROFF(dmach); 1400 break; 1401 } 1402 } 1403 } 1404 if(off == 0){ 1405 err = EINVAL; 1406 return err; 1407 } 1408 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1409 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1410 return err; 1411 }else{ 1412 if(dbch->xferq.flag & FWXFERQ_RUNNING){ 1413 err = EBUSY; 1414 return err; 1415 } 1416 } 1417 dbch->xferq.flag |= FWXFERQ_RUNNING; 1418 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1419 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1420 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1421 } 1422 db_tr = dbch->top; 1423 for (idb = 0; idb < dbch->ndb; idb ++) { 1424 fwohci_add_rx_buf(dbch, db_tr, idb, &sc->dummy_dma); 1425 if (STAILQ_NEXT(db_tr, link) == NULL) 1426 break; 1427 db = db_tr->db; 1428 ldesc = db_tr->dbcnt - 1; 1429 FWOHCI_DMA_WRITE(db[ldesc].db.desc.depend, 1430 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1431 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1432 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1433 FWOHCI_DMA_SET( 1434 db[ldesc].db.desc.cmd, 1435 OHCI_INTERRUPT_ALWAYS); 1436 FWOHCI_DMA_CLEAR( 1437 db[ldesc].db.desc.depend, 1438 0xf); 1439 } 1440 } 1441 db_tr = STAILQ_NEXT(db_tr, link); 1442 } 1443 FWOHCI_DMA_CLEAR( 1444 dbch->bottom->db[db_tr->dbcnt - 1].db.desc.depend, 0xf); 1445 dbch->buf_offset = 0; 1446 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1447 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1448 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1449 return err; 1450 }else{ 1451 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | z); 1452 } 1453 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 1454 return err; 1455} 1456 1457static int 1458fwohci_next_cycle(struct firewire_comm *fc, int cycle_now) 1459{ 1460 int sec, cycle, cycle_match; 1461 1462 cycle = cycle_now & 0x1fff; 1463 sec = cycle_now >> 13; 1464#define CYCLE_MOD 0x10 1465#if 1 1466#define CYCLE_DELAY 8 /* min delay to start DMA */ 1467#else 1468#define CYCLE_DELAY 7000 /* min delay to start DMA */ 1469#endif 1470 cycle = cycle + CYCLE_DELAY; 1471 if (cycle >= 8000) { 1472 sec ++; 1473 cycle -= 8000; 1474 } 1475 cycle = roundup2(cycle, CYCLE_MOD); 1476 if (cycle >= 8000) { 1477 sec ++; 1478 if (cycle == 8000) 1479 cycle = 0; 1480 else 1481 cycle = CYCLE_MOD; 1482 } 1483 cycle_match = ((sec << 13) | cycle) & 0x7ffff; 1484 1485 return(cycle_match); 1486} 1487 1488static int 1489fwohci_itxbuf_enable(struct firewire_comm *fc, int dmach) 1490{ 1491 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1492 int err = 0; 1493 unsigned short tag, ich; 1494 struct fwohci_dbch *dbch; 1495 int cycle_match, cycle_now, s, ldesc; 1496 uint32_t stat; 1497 struct fw_bulkxfer *first, *chunk, *prev; 1498 struct fw_xferq *it; 1499 1500 dbch = &sc->it[dmach]; 1501 it = &dbch->xferq; 1502 1503 tag = (it->flag >> 6) & 3; 1504 ich = it->flag & 0x3f; 1505 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) { 1506 dbch->ndb = it->bnpacket * it->bnchunk; 1507 dbch->ndesc = 3; 1508 fwohci_db_init(sc, dbch); 1509 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1510 return ENOMEM; 1511 err = fwohci_tx_enable(sc, dbch); 1512 } 1513 if(err) 1514 return err; 1515 1516 ldesc = dbch->ndesc - 1; 1517 s = splfw(); 1518 prev = STAILQ_LAST(&it->stdma, fw_bulkxfer, link); 1519 while ((chunk = STAILQ_FIRST(&it->stvalid)) != NULL) { 1520 struct fwohcidb *db; 1521 1522 fwdma_sync_multiseg(it->buf, chunk->poffset, it->bnpacket, 1523 BUS_DMASYNC_PREWRITE); 1524 fwohci_txbufdb(sc, dmach, chunk); 1525 if (prev != NULL) { 1526 db = ((struct fwohcidb_tr *)(prev->end))->db; 1527#if 0 /* XXX necessary? */ 1528 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, 1529 OHCI_BRANCH_ALWAYS); 1530#endif 1531#if 0 /* if bulkxfer->npacket changes */ 1532 db[ldesc].db.desc.depend = db[0].db.desc.depend = 1533 ((struct fwohcidb_tr *) 1534 (chunk->start))->bus_addr | dbch->ndesc; 1535#else 1536 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 1537 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1538#endif 1539 } 1540 STAILQ_REMOVE_HEAD(&it->stvalid, link); 1541 STAILQ_INSERT_TAIL(&it->stdma, chunk, link); 1542 prev = chunk; 1543 } 1544 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1545 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1546 splx(s); 1547 stat = OREAD(sc, OHCI_ITCTL(dmach)); 1548 if (firewire_debug && (stat & OHCI_CNTL_CYCMATCH_S)) 1549 printf("stat 0x%x\n", stat); 1550 1551 if (stat & (OHCI_CNTL_DMA_ACTIVE | OHCI_CNTL_CYCMATCH_S)) 1552 return 0; 1553 1554#if 0 1555 OWRITE(sc, OHCI_ITCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1556#endif 1557 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1558 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1559 OWRITE(sc, OHCI_IT_MASK, 1 << dmach); 1560 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IT); 1561 1562 first = STAILQ_FIRST(&it->stdma); 1563 OWRITE(sc, OHCI_ITCMD(dmach), 1564 ((struct fwohcidb_tr *)(first->start))->bus_addr | dbch->ndesc); 1565 if (firewire_debug > 1) { 1566 printf("fwohci_itxbuf_enable: kick 0x%08x\n", stat); 1567#if 1 1568 dump_dma(sc, ITX_CH + dmach); 1569#endif 1570 } 1571 if ((stat & OHCI_CNTL_DMA_RUN) == 0) { 1572#if 1 1573 /* Don't start until all chunks are buffered */ 1574 if (STAILQ_FIRST(&it->stfree) != NULL) 1575 goto out; 1576#endif 1577#if 1 1578 /* Clear cycle match counter bits */ 1579 OWRITE(sc, OHCI_ITCTLCLR(dmach), 0xffff0000); 1580 1581 /* 2bit second + 13bit cycle */ 1582 cycle_now = (fc->cyctimer(fc) >> 12) & 0x7fff; 1583 cycle_match = fwohci_next_cycle(fc, cycle_now); 1584 1585 OWRITE(sc, OHCI_ITCTL(dmach), 1586 OHCI_CNTL_CYCMATCH_S | (cycle_match << 16) 1587 | OHCI_CNTL_DMA_RUN); 1588#else 1589 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_RUN); 1590#endif 1591 if (firewire_debug > 1) { 1592 printf("cycle_match: 0x%04x->0x%04x\n", 1593 cycle_now, cycle_match); 1594 dump_dma(sc, ITX_CH + dmach); 1595 dump_db(sc, ITX_CH + dmach); 1596 } 1597 } else if ((stat & OHCI_CNTL_CYCMATCH_S) == 0) { 1598 device_printf(sc->fc.dev, 1599 "IT DMA underrun (0x%08x)\n", stat); 1600 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_WAKE); 1601 } 1602out: 1603 return err; 1604} 1605 1606static int 1607fwohci_irx_enable(struct firewire_comm *fc, int dmach) 1608{ 1609 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1610 int err = 0, s, ldesc; 1611 unsigned short tag, ich; 1612 uint32_t stat; 1613 struct fwohci_dbch *dbch; 1614 struct fwohcidb_tr *db_tr; 1615 struct fw_bulkxfer *first, *prev, *chunk; 1616 struct fw_xferq *ir; 1617 1618 dbch = &sc->ir[dmach]; 1619 ir = &dbch->xferq; 1620 1621 if ((ir->flag & FWXFERQ_RUNNING) == 0) { 1622 tag = (ir->flag >> 6) & 3; 1623 ich = ir->flag & 0x3f; 1624 OWRITE(sc, OHCI_IRMATCH(dmach), tagbit[tag] | ich); 1625 1626 ir->queued = 0; 1627 dbch->ndb = ir->bnpacket * ir->bnchunk; 1628 dbch->ndesc = 2; 1629 fwohci_db_init(sc, dbch); 1630 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1631 return ENOMEM; 1632 err = fwohci_rx_enable(sc, dbch); 1633 } 1634 if(err) 1635 return err; 1636 1637 first = STAILQ_FIRST(&ir->stfree); 1638 if (first == NULL) { 1639 device_printf(fc->dev, "IR DMA no free chunk\n"); 1640 return 0; 1641 } 1642 1643 ldesc = dbch->ndesc - 1; 1644 s = splfw(); 1645 prev = STAILQ_LAST(&ir->stdma, fw_bulkxfer, link); 1646 while ((chunk = STAILQ_FIRST(&ir->stfree)) != NULL) { 1647 struct fwohcidb *db; 1648 1649#if 1 /* XXX for if_fwe */ 1650 if (chunk->mbuf != NULL) { 1651 db_tr = (struct fwohcidb_tr *)(chunk->start); 1652 db_tr->dbcnt = 1; 1653 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 1654 chunk->mbuf, fwohci_execute_db2, db_tr, 1655 /* flags */0); 1656 FWOHCI_DMA_SET(db_tr->db[1].db.desc.cmd, 1657 OHCI_UPDATE | OHCI_INPUT_LAST | 1658 OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 1659 } 1660#endif 1661 db = ((struct fwohcidb_tr *)(chunk->end))->db; 1662 FWOHCI_DMA_WRITE(db[ldesc].db.desc.res, 0); 1663 FWOHCI_DMA_CLEAR(db[ldesc].db.desc.depend, 0xf); 1664 if (prev != NULL) { 1665 db = ((struct fwohcidb_tr *)(prev->end))->db; 1666 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1667 } 1668 STAILQ_REMOVE_HEAD(&ir->stfree, link); 1669 STAILQ_INSERT_TAIL(&ir->stdma, chunk, link); 1670 prev = chunk; 1671 } 1672 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1673 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1674 splx(s); 1675 stat = OREAD(sc, OHCI_IRCTL(dmach)); 1676 if (stat & OHCI_CNTL_DMA_ACTIVE) 1677 return 0; 1678 if (stat & OHCI_CNTL_DMA_RUN) { 1679 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1680 device_printf(sc->fc.dev, "IR DMA overrun (0x%08x)\n", stat); 1681 } 1682 1683 if (firewire_debug) 1684 printf("start IR DMA 0x%x\n", stat); 1685 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1686 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1687 OWRITE(sc, OHCI_IR_MASK, 1 << dmach); 1688 OWRITE(sc, OHCI_IRCTLCLR(dmach), 0xf0000000); 1689 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_ISOHDR); 1690 OWRITE(sc, OHCI_IRCMD(dmach), 1691 ((struct fwohcidb_tr *)(first->start))->bus_addr 1692 | dbch->ndesc); 1693 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_DMA_RUN); 1694 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IR); 1695#if 0 1696 dump_db(sc, IRX_CH + dmach); 1697#endif 1698 return err; 1699} 1700 1701int 1702fwohci_stop(struct fwohci_softc *sc, device_t dev) 1703{ 1704 u_int i; 1705 1706/* Now stopping all DMA channel */ 1707 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 1708 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 1709 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1710 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1711 1712 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 1713 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 1714 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 1715 } 1716 1717/* FLUSH FIFO and reset Transmitter/Reciever */ 1718 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 1719 1720/* Stop interrupt */ 1721 OWRITE(sc, FWOHCI_INTMASKCLR, 1722 OHCI_INT_EN | OHCI_INT_ERR | OHCI_INT_PHY_SID 1723 | OHCI_INT_PHY_INT 1724 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 1725 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 1726 | OHCI_INT_DMA_ARRQ | OHCI_INT_DMA_ARRS 1727 | OHCI_INT_PHY_BUS_R); 1728 1729 if (sc->fc.arq !=0 && sc->fc.arq->maxq > 0) 1730 fw_drain_txq(&sc->fc); 1731 1732/* XXX Link down? Bus reset? */ 1733 return 0; 1734} 1735 1736int 1737fwohci_resume(struct fwohci_softc *sc, device_t dev) 1738{ 1739 int i; 1740 struct fw_xferq *ir; 1741 struct fw_bulkxfer *chunk; 1742 1743 fwohci_reset(sc, dev); 1744 /* XXX resume isochronous receive automatically. (how about TX?) */ 1745 for(i = 0; i < sc->fc.nisodma; i ++) { 1746 ir = &sc->ir[i].xferq; 1747 if((ir->flag & FWXFERQ_RUNNING) != 0) { 1748 device_printf(sc->fc.dev, 1749 "resume iso receive ch: %d\n", i); 1750 ir->flag &= ~FWXFERQ_RUNNING; 1751 /* requeue stdma to stfree */ 1752 while((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 1753 STAILQ_REMOVE_HEAD(&ir->stdma, link); 1754 STAILQ_INSERT_TAIL(&ir->stfree, chunk, link); 1755 } 1756 sc->fc.irx_enable(&sc->fc, i); 1757 } 1758 } 1759 1760 bus_generic_resume(dev); 1761 sc->fc.ibr(&sc->fc); 1762 return 0; 1763} 1764 1765#define ACK_ALL 1766static void 1767fwohci_intr_body(struct fwohci_softc *sc, uint32_t stat, int count) 1768{ 1769 uint32_t irstat, itstat; 1770 u_int i; 1771 struct firewire_comm *fc = (struct firewire_comm *)sc; 1772 1773#ifdef OHCI_DEBUG 1774 if(stat & OREAD(sc, FWOHCI_INTMASK)) 1775 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", 1776 stat & OHCI_INT_EN ? "DMA_EN ":"", 1777 stat & OHCI_INT_PHY_REG ? "PHY_REG ":"", 1778 stat & OHCI_INT_CYC_LONG ? "CYC_LONG ":"", 1779 stat & OHCI_INT_ERR ? "INT_ERR ":"", 1780 stat & OHCI_INT_CYC_ERR ? "CYC_ERR ":"", 1781 stat & OHCI_INT_CYC_LOST ? "CYC_LOST ":"", 1782 stat & OHCI_INT_CYC_64SECOND ? "CYC_64SECOND ":"", 1783 stat & OHCI_INT_CYC_START ? "CYC_START ":"", 1784 stat & OHCI_INT_PHY_INT ? "PHY_INT ":"", 1785 stat & OHCI_INT_PHY_BUS_R ? "BUS_RESET ":"", 1786 stat & OHCI_INT_PHY_SID ? "SID ":"", 1787 stat & OHCI_INT_LR_ERR ? "DMA_LR_ERR ":"", 1788 stat & OHCI_INT_PW_ERR ? "DMA_PW_ERR ":"", 1789 stat & OHCI_INT_DMA_IR ? "DMA_IR ":"", 1790 stat & OHCI_INT_DMA_IT ? "DMA_IT " :"", 1791 stat & OHCI_INT_DMA_PRRS ? "DMA_PRRS " :"", 1792 stat & OHCI_INT_DMA_PRRQ ? "DMA_PRRQ " :"", 1793 stat & OHCI_INT_DMA_ARRS ? "DMA_ARRS " :"", 1794 stat & OHCI_INT_DMA_ARRQ ? "DMA_ARRQ " :"", 1795 stat & OHCI_INT_DMA_ATRS ? "DMA_ATRS " :"", 1796 stat & OHCI_INT_DMA_ATRQ ? "DMA_ATRQ " :"", 1797 stat, OREAD(sc, FWOHCI_INTMASK) 1798 ); 1799#endif 1800/* Bus reset */ 1801 if(stat & OHCI_INT_PHY_BUS_R ){ 1802 if (fc->status == FWBUSRESET) 1803 goto busresetout; 1804 /* Disable bus reset interrupt until sid recv. */ 1805 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_BUS_R); 1806 1807 device_printf(fc->dev, "BUS reset\n"); 1808 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_CYC_LOST); 1809 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCSRC); 1810 1811 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1812 sc->atrq.xferq.flag &= ~FWXFERQ_RUNNING; 1813 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1814 sc->atrs.xferq.flag &= ~FWXFERQ_RUNNING; 1815 1816#ifndef ACK_ALL 1817 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_BUS_R); 1818#endif 1819 fw_busreset(fc, FWBUSRESET); 1820 OWRITE(sc, OHCI_CROMHDR, ntohl(sc->fc.config_rom[0])); 1821 OWRITE(sc, OHCI_BUS_OPT, ntohl(sc->fc.config_rom[2])); 1822 } 1823busresetout: 1824 if((stat & OHCI_INT_DMA_IR )){ 1825#ifndef ACK_ALL 1826 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IR); 1827#endif 1828#if defined(__DragonFly__) || __FreeBSD_version < 500000 1829 irstat = sc->irstat; 1830 sc->irstat = 0; 1831#else 1832 irstat = atomic_readandclear_int(&sc->irstat); 1833#endif 1834 for(i = 0; i < fc->nisodma ; i++){ 1835 struct fwohci_dbch *dbch; 1836 1837 if((irstat & (1 << i)) != 0){ 1838 dbch = &sc->ir[i]; 1839 if ((dbch->xferq.flag & FWXFERQ_OPEN) == 0) { 1840 device_printf(sc->fc.dev, 1841 "dma(%d) not active\n", i); 1842 continue; 1843 } 1844 fwohci_rbuf_update(sc, i); 1845 } 1846 } 1847 } 1848 if((stat & OHCI_INT_DMA_IT )){ 1849#ifndef ACK_ALL 1850 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IT); 1851#endif 1852#if defined(__DragonFly__) || __FreeBSD_version < 500000 1853 itstat = sc->itstat; 1854 sc->itstat = 0; 1855#else 1856 itstat = atomic_readandclear_int(&sc->itstat); 1857#endif 1858 for(i = 0; i < fc->nisodma ; i++){ 1859 if((itstat & (1 << i)) != 0){ 1860 fwohci_tbuf_update(sc, i); 1861 } 1862 } 1863 } 1864 if((stat & OHCI_INT_DMA_PRRS )){ 1865#ifndef ACK_ALL 1866 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRS); 1867#endif 1868#if 0 1869 dump_dma(sc, ARRS_CH); 1870 dump_db(sc, ARRS_CH); 1871#endif 1872 fwohci_arcv(sc, &sc->arrs, count); 1873 } 1874 if((stat & OHCI_INT_DMA_PRRQ )){ 1875#ifndef ACK_ALL 1876 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRQ); 1877#endif 1878#if 0 1879 dump_dma(sc, ARRQ_CH); 1880 dump_db(sc, ARRQ_CH); 1881#endif 1882 fwohci_arcv(sc, &sc->arrq, count); 1883 } 1884 if (stat & OHCI_INT_CYC_LOST) { 1885 if (sc->cycle_lost >= 0) 1886 sc->cycle_lost ++; 1887 if (sc->cycle_lost > 10) { 1888 sc->cycle_lost = -1; 1889#if 0 1890 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCTIMER); 1891#endif 1892 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_CYC_LOST); 1893 device_printf(fc->dev, "too many cycle lost, " 1894 "no cycle master presents?\n"); 1895 } 1896 } 1897 if(stat & OHCI_INT_PHY_SID){ 1898 uint32_t *buf, node_id; 1899 int plen; 1900 1901#ifndef ACK_ALL 1902 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_SID); 1903#endif 1904 /* Enable bus reset interrupt */ 1905 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_PHY_BUS_R); 1906 /* Allow async. request to us */ 1907 OWRITE(sc, OHCI_AREQHI, 1 << 31); 1908 /* XXX insecure ?? */ 1909 /* allow from all nodes */ 1910 OWRITE(sc, OHCI_PREQHI, 0x7fffffff); 1911 OWRITE(sc, OHCI_PREQLO, 0xffffffff); 1912 /* 0 to 4GB regison */ 1913 OWRITE(sc, OHCI_PREQUPPER, 0x10000); 1914 /* Set ATRetries register */ 1915 OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff); 1916/* 1917** Checking whether the node is root or not. If root, turn on 1918** cycle master. 1919*/ 1920 node_id = OREAD(sc, FWOHCI_NODEID); 1921 plen = OREAD(sc, OHCI_SID_CNT); 1922 1923 device_printf(fc->dev, "node_id=0x%08x, gen=%d, ", 1924 node_id, (plen >> 16) & 0xff); 1925 if (!(node_id & OHCI_NODE_VALID)) { 1926 printf("Bus reset failure\n"); 1927 goto sidout; 1928 } 1929 1930 /* cycle timer */ 1931 sc->cycle_lost = 0; 1932 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_CYC_LOST); 1933 if ((node_id & OHCI_NODE_ROOT) && !nocyclemaster) { 1934 printf("CYCLEMASTER mode\n"); 1935 OWRITE(sc, OHCI_LNKCTL, 1936 OHCI_CNTL_CYCMTR | OHCI_CNTL_CYCTIMER); 1937 } else { 1938 printf("non CYCLEMASTER mode\n"); 1939 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCMTR); 1940 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_CYCTIMER); 1941 } 1942 1943 fc->nodeid = node_id & 0x3f; 1944 1945 if (plen & OHCI_SID_ERR) { 1946 device_printf(fc->dev, "SID Error\n"); 1947 goto sidout; 1948 } 1949 plen &= OHCI_SID_CNT_MASK; 1950 if (plen < 4 || plen > OHCI_SIDSIZE) { 1951 device_printf(fc->dev, "invalid SID len = %d\n", plen); 1952 goto sidout; 1953 } 1954 plen -= 4; /* chop control info */ 1955 buf = (uint32_t *)malloc(OHCI_SIDSIZE, M_FW, M_NOWAIT); 1956 if (buf == NULL) { 1957 device_printf(fc->dev, "malloc failed\n"); 1958 goto sidout; 1959 } 1960 for (i = 0; i < plen / 4; i ++) 1961 buf[i] = FWOHCI_DMA_READ(sc->sid_buf[i+1]); 1962#if 1 /* XXX needed?? */ 1963 /* pending all pre-bus_reset packets */ 1964 fwohci_txd(sc, &sc->atrq); 1965 fwohci_txd(sc, &sc->atrs); 1966 fwohci_arcv(sc, &sc->arrs, -1); 1967 fwohci_arcv(sc, &sc->arrq, -1); 1968 fw_drain_txq(fc); 1969#endif 1970 fw_sidrcv(fc, buf, plen); 1971 free(buf, M_FW); 1972 } 1973sidout: 1974 if((stat & OHCI_INT_DMA_ATRQ )){ 1975#ifndef ACK_ALL 1976 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRQ); 1977#endif 1978 fwohci_txd(sc, &(sc->atrq)); 1979 } 1980 if((stat & OHCI_INT_DMA_ATRS )){ 1981#ifndef ACK_ALL 1982 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRS); 1983#endif 1984 fwohci_txd(sc, &(sc->atrs)); 1985 } 1986 if((stat & OHCI_INT_PW_ERR )){ 1987#ifndef ACK_ALL 1988 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PW_ERR); 1989#endif 1990 device_printf(fc->dev, "posted write error\n"); 1991 } 1992 if((stat & OHCI_INT_ERR )){ 1993#ifndef ACK_ALL 1994 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_ERR); 1995#endif 1996 device_printf(fc->dev, "unrecoverable error\n"); 1997 } 1998 if((stat & OHCI_INT_PHY_INT)) { 1999#ifndef ACK_ALL 2000 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_INT); 2001#endif 2002 device_printf(fc->dev, "phy int\n"); 2003 } 2004 2005 return; 2006} 2007 2008#if FWOHCI_TASKQUEUE 2009static void 2010fwohci_complete(void *arg, int pending) 2011{ 2012 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2013 uint32_t stat; 2014 2015again: 2016 stat = atomic_readandclear_int(&sc->intstat); 2017 if (stat) 2018 fwohci_intr_body(sc, stat, -1); 2019 else 2020 return; 2021 goto again; 2022} 2023#endif 2024 2025static uint32_t 2026fwochi_check_stat(struct fwohci_softc *sc) 2027{ 2028 uint32_t stat, irstat, itstat; 2029 2030 stat = OREAD(sc, FWOHCI_INTSTAT); 2031 if (stat == 0xffffffff) { 2032 device_printf(sc->fc.dev, 2033 "device physically ejected?\n"); 2034 return(stat); 2035 } 2036#ifdef ACK_ALL 2037 if (stat) 2038 OWRITE(sc, FWOHCI_INTSTATCLR, stat); 2039#endif 2040 if (stat & OHCI_INT_DMA_IR) { 2041 irstat = OREAD(sc, OHCI_IR_STAT); 2042 OWRITE(sc, OHCI_IR_STATCLR, irstat); 2043 atomic_set_int(&sc->irstat, irstat); 2044 } 2045 if (stat & OHCI_INT_DMA_IT) { 2046 itstat = OREAD(sc, OHCI_IT_STAT); 2047 OWRITE(sc, OHCI_IT_STATCLR, itstat); 2048 atomic_set_int(&sc->itstat, itstat); 2049 } 2050 return(stat); 2051} 2052 2053void 2054fwohci_intr(void *arg) 2055{ 2056 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2057 uint32_t stat; 2058#if !FWOHCI_TASKQUEUE 2059 uint32_t bus_reset = 0; 2060#endif 2061 2062 if (!(sc->intmask & OHCI_INT_EN)) { 2063 /* polling mode */ 2064 return; 2065 } 2066 2067#if !FWOHCI_TASKQUEUE 2068again: 2069#endif 2070 stat = fwochi_check_stat(sc); 2071 if (stat == 0 || stat == 0xffffffff) 2072 return; 2073#if FWOHCI_TASKQUEUE 2074 atomic_set_int(&sc->intstat, stat); 2075 /* XXX mask bus reset intr. during bus reset phase */ 2076 if (stat) 2077 taskqueue_enqueue(taskqueue_swi_giant, &sc->fwohci_task_complete); 2078#else 2079 /* We cannot clear bus reset event during bus reset phase */ 2080 if ((stat & ~bus_reset) == 0) 2081 return; 2082 bus_reset = stat & OHCI_INT_PHY_BUS_R; 2083 fwohci_intr_body(sc, stat, -1); 2084 goto again; 2085#endif 2086} 2087 2088void 2089fwohci_poll(struct firewire_comm *fc, int quick, int count) 2090{ 2091 int s; 2092 uint32_t stat; 2093 struct fwohci_softc *sc; 2094 2095 2096 sc = (struct fwohci_softc *)fc; 2097 stat = OHCI_INT_DMA_IR | OHCI_INT_DMA_IT | 2098 OHCI_INT_DMA_PRRS | OHCI_INT_DMA_PRRQ | 2099 OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS; 2100#if 0 2101 if (!quick) { 2102#else 2103 if (1) { 2104#endif 2105 stat = fwochi_check_stat(sc); 2106 if (stat == 0 || stat == 0xffffffff) 2107 return; 2108 } 2109 s = splfw(); 2110 fwohci_intr_body(sc, stat, count); 2111 splx(s); 2112} 2113 2114static void 2115fwohci_set_intr(struct firewire_comm *fc, int enable) 2116{ 2117 struct fwohci_softc *sc; 2118 2119 sc = (struct fwohci_softc *)fc; 2120 if (firewire_debug) 2121 device_printf(sc->fc.dev, "fwohci_set_intr: %d\n", enable); 2122 if (enable) { 2123 sc->intmask |= OHCI_INT_EN; 2124 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_EN); 2125 } else { 2126 sc->intmask &= ~OHCI_INT_EN; 2127 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_EN); 2128 } 2129} 2130 2131static void 2132fwohci_tbuf_update(struct fwohci_softc *sc, int dmach) 2133{ 2134 struct firewire_comm *fc = &sc->fc; 2135 struct fwohcidb *db; 2136 struct fw_bulkxfer *chunk; 2137 struct fw_xferq *it; 2138 uint32_t stat, count; 2139 int s, w=0, ldesc; 2140 2141 it = fc->it[dmach]; 2142 ldesc = sc->it[dmach].ndesc - 1; 2143 s = splfw(); /* unnecessary ? */ 2144 fwdma_sync_multiseg_all(sc->it[dmach].am, BUS_DMASYNC_POSTREAD); 2145 if (firewire_debug) 2146 dump_db(sc, ITX_CH + dmach); 2147 while ((chunk = STAILQ_FIRST(&it->stdma)) != NULL) { 2148 db = ((struct fwohcidb_tr *)(chunk->end))->db; 2149 stat = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2150 >> OHCI_STATUS_SHIFT; 2151 db = ((struct fwohcidb_tr *)(chunk->start))->db; 2152 /* timestamp */ 2153 count = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2154 & OHCI_COUNT_MASK; 2155 if (stat == 0) 2156 break; 2157 STAILQ_REMOVE_HEAD(&it->stdma, link); 2158 switch (stat & FWOHCIEV_MASK){ 2159 case FWOHCIEV_ACKCOMPL: 2160#if 0 2161 device_printf(fc->dev, "0x%08x\n", count); 2162#endif 2163 break; 2164 default: 2165 device_printf(fc->dev, 2166 "Isochronous transmit err %02x(%s)\n", 2167 stat, fwohcicode[stat & 0x1f]); 2168 } 2169 STAILQ_INSERT_TAIL(&it->stfree, chunk, link); 2170 w++; 2171 } 2172 splx(s); 2173 if (w) 2174 wakeup(it); 2175} 2176 2177static void 2178fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) 2179{ 2180 struct firewire_comm *fc = &sc->fc; 2181 struct fwohcidb_tr *db_tr; 2182 struct fw_bulkxfer *chunk; 2183 struct fw_xferq *ir; 2184 uint32_t stat; 2185 int s, w=0, ldesc; 2186 2187 ir = fc->ir[dmach]; 2188 ldesc = sc->ir[dmach].ndesc - 1; 2189#if 0 2190 dump_db(sc, dmach); 2191#endif 2192 s = splfw(); 2193 fwdma_sync_multiseg_all(sc->ir[dmach].am, BUS_DMASYNC_POSTREAD); 2194 while ((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 2195 db_tr = (struct fwohcidb_tr *)chunk->end; 2196 stat = FWOHCI_DMA_READ(db_tr->db[ldesc].db.desc.res) 2197 >> OHCI_STATUS_SHIFT; 2198 if (stat == 0) 2199 break; 2200 2201 if (chunk->mbuf != NULL) { 2202 bus_dmamap_sync(sc->ir[dmach].dmat, db_tr->dma_map, 2203 BUS_DMASYNC_POSTREAD); 2204 bus_dmamap_unload(sc->ir[dmach].dmat, db_tr->dma_map); 2205 } else if (ir->buf != NULL) { 2206 fwdma_sync_multiseg(ir->buf, chunk->poffset, 2207 ir->bnpacket, BUS_DMASYNC_POSTREAD); 2208 } else { 2209 /* XXX */ 2210 printf("fwohci_rbuf_update: this shouldn't happend\n"); 2211 } 2212 2213 STAILQ_REMOVE_HEAD(&ir->stdma, link); 2214 STAILQ_INSERT_TAIL(&ir->stvalid, chunk, link); 2215 switch (stat & FWOHCIEV_MASK) { 2216 case FWOHCIEV_ACKCOMPL: 2217 chunk->resp = 0; 2218 break; 2219 default: 2220 chunk->resp = EINVAL; 2221 device_printf(fc->dev, 2222 "Isochronous receive err %02x(%s)\n", 2223 stat, fwohcicode[stat & 0x1f]); 2224 } 2225 w++; 2226 } 2227 splx(s); 2228 if (w) { 2229 if (ir->flag & FWXFERQ_HANDLER) 2230 ir->hand(ir); 2231 else 2232 wakeup(ir); 2233 } 2234} 2235 2236void 2237dump_dma(struct fwohci_softc *sc, uint32_t ch) 2238{ 2239 uint32_t off, cntl, stat, cmd, match; 2240 2241 if(ch == 0){ 2242 off = OHCI_ATQOFF; 2243 }else if(ch == 1){ 2244 off = OHCI_ATSOFF; 2245 }else if(ch == 2){ 2246 off = OHCI_ARQOFF; 2247 }else if(ch == 3){ 2248 off = OHCI_ARSOFF; 2249 }else if(ch < IRX_CH){ 2250 off = OHCI_ITCTL(ch - ITX_CH); 2251 }else{ 2252 off = OHCI_IRCTL(ch - IRX_CH); 2253 } 2254 cntl = stat = OREAD(sc, off); 2255 cmd = OREAD(sc, off + 0xc); 2256 match = OREAD(sc, off + 0x10); 2257 2258 device_printf(sc->fc.dev, "ch %1x cntl:0x%08x cmd:0x%08x match:0x%08x\n", 2259 ch, 2260 cntl, 2261 cmd, 2262 match); 2263 stat &= 0xffff ; 2264 if (stat) { 2265 device_printf(sc->fc.dev, "dma %d ch:%s%s%s%s%s%s %s(%x)\n", 2266 ch, 2267 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2268 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2269 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2270 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2271 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2272 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2273 fwohcicode[stat & 0x1f], 2274 stat & 0x1f 2275 ); 2276 }else{ 2277 device_printf(sc->fc.dev, "dma %d ch: Nostat\n", ch); 2278 } 2279} 2280 2281void 2282dump_db(struct fwohci_softc *sc, uint32_t ch) 2283{ 2284 struct fwohci_dbch *dbch; 2285 struct fwohcidb_tr *cp = NULL, *pp, *np = NULL; 2286 struct fwohcidb *curr = NULL, *prev, *next = NULL; 2287 int idb, jdb; 2288 uint32_t cmd, off; 2289 if(ch == 0){ 2290 off = OHCI_ATQOFF; 2291 dbch = &sc->atrq; 2292 }else if(ch == 1){ 2293 off = OHCI_ATSOFF; 2294 dbch = &sc->atrs; 2295 }else if(ch == 2){ 2296 off = OHCI_ARQOFF; 2297 dbch = &sc->arrq; 2298 }else if(ch == 3){ 2299 off = OHCI_ARSOFF; 2300 dbch = &sc->arrs; 2301 }else if(ch < IRX_CH){ 2302 off = OHCI_ITCTL(ch - ITX_CH); 2303 dbch = &sc->it[ch - ITX_CH]; 2304 }else { 2305 off = OHCI_IRCTL(ch - IRX_CH); 2306 dbch = &sc->ir[ch - IRX_CH]; 2307 } 2308 cmd = OREAD(sc, off + 0xc); 2309 2310 if( dbch->ndb == 0 ){ 2311 device_printf(sc->fc.dev, "No DB is attached ch=%d\n", ch); 2312 return; 2313 } 2314 pp = dbch->top; 2315 prev = pp->db; 2316 for(idb = 0 ; idb < dbch->ndb ; idb ++ ){ 2317 cp = STAILQ_NEXT(pp, link); 2318 if(cp == NULL){ 2319 curr = NULL; 2320 goto outdb; 2321 } 2322 np = STAILQ_NEXT(cp, link); 2323 for(jdb = 0 ; jdb < dbch->ndesc ; jdb ++ ){ 2324 if ((cmd & 0xfffffff0) == cp->bus_addr) { 2325 curr = cp->db; 2326 if(np != NULL){ 2327 next = np->db; 2328 }else{ 2329 next = NULL; 2330 } 2331 goto outdb; 2332 } 2333 } 2334 pp = STAILQ_NEXT(pp, link); 2335 if(pp == NULL){ 2336 curr = NULL; 2337 goto outdb; 2338 } 2339 prev = pp->db; 2340 } 2341outdb: 2342 if( curr != NULL){ 2343#if 0 2344 printf("Prev DB %d\n", ch); 2345 print_db(pp, prev, ch, dbch->ndesc); 2346#endif 2347 printf("Current DB %d\n", ch); 2348 print_db(cp, curr, ch, dbch->ndesc); 2349#if 0 2350 printf("Next DB %d\n", ch); 2351 print_db(np, next, ch, dbch->ndesc); 2352#endif 2353 }else{ 2354 printf("dbdump err ch = %d cmd = 0x%08x\n", ch, cmd); 2355 } 2356 return; 2357} 2358 2359void 2360print_db(struct fwohcidb_tr *db_tr, struct fwohcidb *db, 2361 uint32_t ch, uint32_t max) 2362{ 2363 fwohcireg_t stat; 2364 int i, key; 2365 uint32_t cmd, res; 2366 2367 if(db == NULL){ 2368 printf("No Descriptor is found\n"); 2369 return; 2370 } 2371 2372 printf("ch = %d\n%8s %s %s %s %s %4s %8s %8s %4s:%4s\n", 2373 ch, 2374 "Current", 2375 "OP ", 2376 "KEY", 2377 "INT", 2378 "BR ", 2379 "len", 2380 "Addr", 2381 "Depend", 2382 "Stat", 2383 "Cnt"); 2384 for( i = 0 ; i <= max ; i ++){ 2385 cmd = FWOHCI_DMA_READ(db[i].db.desc.cmd); 2386 res = FWOHCI_DMA_READ(db[i].db.desc.res); 2387 key = cmd & OHCI_KEY_MASK; 2388 stat = res >> OHCI_STATUS_SHIFT; 2389#if defined(__DragonFly__) || __FreeBSD_version < 500000 2390 printf("%08x %s %s %s %s %5d %08x %08x %04x:%04x", 2391 db_tr->bus_addr, 2392#else 2393 printf("%08jx %s %s %s %s %5d %08x %08x %04x:%04x", 2394 (uintmax_t)db_tr->bus_addr, 2395#endif 2396 dbcode[(cmd >> 28) & 0xf], 2397 dbkey[(cmd >> 24) & 0x7], 2398 dbcond[(cmd >> 20) & 0x3], 2399 dbcond[(cmd >> 18) & 0x3], 2400 cmd & OHCI_COUNT_MASK, 2401 FWOHCI_DMA_READ(db[i].db.desc.addr), 2402 FWOHCI_DMA_READ(db[i].db.desc.depend), 2403 stat, 2404 res & OHCI_COUNT_MASK); 2405 if(stat & 0xff00){ 2406 printf(" %s%s%s%s%s%s %s(%x)\n", 2407 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2408 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2409 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2410 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2411 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2412 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2413 fwohcicode[stat & 0x1f], 2414 stat & 0x1f 2415 ); 2416 }else{ 2417 printf(" Nostat\n"); 2418 } 2419 if(key == OHCI_KEY_ST2 ){ 2420 printf("0x%08x 0x%08x 0x%08x 0x%08x\n", 2421 FWOHCI_DMA_READ(db[i+1].db.immed[0]), 2422 FWOHCI_DMA_READ(db[i+1].db.immed[1]), 2423 FWOHCI_DMA_READ(db[i+1].db.immed[2]), 2424 FWOHCI_DMA_READ(db[i+1].db.immed[3])); 2425 } 2426 if(key == OHCI_KEY_DEVICE){ 2427 return; 2428 } 2429 if((cmd & OHCI_BRANCH_MASK) 2430 == OHCI_BRANCH_ALWAYS){ 2431 return; 2432 } 2433 if((cmd & OHCI_CMD_MASK) 2434 == OHCI_OUTPUT_LAST){ 2435 return; 2436 } 2437 if((cmd & OHCI_CMD_MASK) 2438 == OHCI_INPUT_LAST){ 2439 return; 2440 } 2441 if(key == OHCI_KEY_ST2 ){ 2442 i++; 2443 } 2444 } 2445 return; 2446} 2447 2448void 2449fwohci_ibr(struct firewire_comm *fc) 2450{ 2451 struct fwohci_softc *sc; 2452 uint32_t fun; 2453 2454 device_printf(fc->dev, "Initiate bus reset\n"); 2455 sc = (struct fwohci_softc *)fc; 2456 2457 /* 2458 * Make sure our cached values from the config rom are 2459 * initialised. 2460 */ 2461 OWRITE(sc, OHCI_CROMHDR, ntohl(sc->fc.config_rom[0])); 2462 OWRITE(sc, OHCI_BUS_OPT, ntohl(sc->fc.config_rom[2])); 2463 2464 /* 2465 * Set root hold-off bit so that non cyclemaster capable node 2466 * shouldn't became the root node. 2467 */ 2468#if 1 2469 fun = fwphy_rddata(sc, FW_PHY_IBR_REG); 2470 fun |= FW_PHY_IBR | FW_PHY_RHB; 2471 fun = fwphy_wrdata(sc, FW_PHY_IBR_REG, fun); 2472#else /* Short bus reset */ 2473 fun = fwphy_rddata(sc, FW_PHY_ISBR_REG); 2474 fun |= FW_PHY_ISBR | FW_PHY_RHB; 2475 fun = fwphy_wrdata(sc, FW_PHY_ISBR_REG, fun); 2476#endif 2477} 2478 2479void 2480fwohci_txbufdb(struct fwohci_softc *sc, int dmach, struct fw_bulkxfer *bulkxfer) 2481{ 2482 struct fwohcidb_tr *db_tr, *fdb_tr; 2483 struct fwohci_dbch *dbch; 2484 struct fwohcidb *db; 2485 struct fw_pkt *fp; 2486 struct fwohci_txpkthdr *ohcifp; 2487 unsigned short chtag; 2488 int idb; 2489 2490 dbch = &sc->it[dmach]; 2491 chtag = sc->it[dmach].xferq.flag & 0xff; 2492 2493 db_tr = (struct fwohcidb_tr *)(bulkxfer->start); 2494 fdb_tr = (struct fwohcidb_tr *)(bulkxfer->end); 2495/* 2496device_printf(sc->fc.dev, "DB %08x %08x %08x\n", bulkxfer, db_tr->bus_addr, fdb_tr->bus_addr); 2497*/ 2498 for (idb = 0; idb < dbch->xferq.bnpacket; idb ++) { 2499 db = db_tr->db; 2500 fp = (struct fw_pkt *)db_tr->buf; 2501 ohcifp = (struct fwohci_txpkthdr *) db[1].db.immed; 2502 ohcifp->mode.ld[0] = fp->mode.ld[0]; 2503 ohcifp->mode.common.spd = 0 & 0x7; 2504 ohcifp->mode.stream.len = fp->mode.stream.len; 2505 ohcifp->mode.stream.chtag = chtag; 2506 ohcifp->mode.stream.tcode = 0xa; 2507#if BYTE_ORDER == BIG_ENDIAN 2508 FWOHCI_DMA_WRITE(db[1].db.immed[0], db[1].db.immed[0]); 2509 FWOHCI_DMA_WRITE(db[1].db.immed[1], db[1].db.immed[1]); 2510#endif 2511 2512 FWOHCI_DMA_CLEAR(db[2].db.desc.cmd, OHCI_COUNT_MASK); 2513 FWOHCI_DMA_SET(db[2].db.desc.cmd, fp->mode.stream.len); 2514 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2515#if 0 /* if bulkxfer->npackets changes */ 2516 db[2].db.desc.cmd = OHCI_OUTPUT_LAST 2517 | OHCI_UPDATE 2518 | OHCI_BRANCH_ALWAYS; 2519 db[0].db.desc.depend = 2520 = db[dbch->ndesc - 1].db.desc.depend 2521 = STAILQ_NEXT(db_tr, link)->bus_addr | dbch->ndesc; 2522#else 2523 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 2524 FWOHCI_DMA_SET(db[dbch->ndesc - 1].db.desc.depend, dbch->ndesc); 2525#endif 2526 bulkxfer->end = (caddr_t)db_tr; 2527 db_tr = STAILQ_NEXT(db_tr, link); 2528 } 2529 db = ((struct fwohcidb_tr *)bulkxfer->end)->db; 2530 FWOHCI_DMA_CLEAR(db[0].db.desc.depend, 0xf); 2531 FWOHCI_DMA_CLEAR(db[dbch->ndesc - 1].db.desc.depend, 0xf); 2532#if 0 /* if bulkxfer->npackets changes */ 2533 db[dbch->ndesc - 1].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2534 /* OHCI 1.1 and above */ 2535 db[0].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2536#endif 2537/* 2538 db_tr = (struct fwohcidb_tr *)bulkxfer->start; 2539 fdb_tr = (struct fwohcidb_tr *)bulkxfer->end; 2540device_printf(sc->fc.dev, "DB %08x %3d %08x %08x\n", bulkxfer, bulkxfer->npacket, db_tr->bus_addr, fdb_tr->bus_addr); 2541*/ 2542 return; 2543} 2544 2545static int 2546fwohci_add_tx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2547 int poffset) 2548{ 2549 struct fwohcidb *db = db_tr->db; 2550 struct fw_xferq *it; 2551 int err = 0; 2552 2553 it = &dbch->xferq; 2554 if(it->buf == 0){ 2555 err = EINVAL; 2556 return err; 2557 } 2558 db_tr->buf = fwdma_v_addr(it->buf, poffset); 2559 db_tr->dbcnt = 3; 2560 2561 FWOHCI_DMA_WRITE(db[0].db.desc.cmd, 2562 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | 8); 2563 FWOHCI_DMA_WRITE(db[0].db.desc.addr, 0); 2564 bzero((void *)&db[1].db.immed[0], sizeof(db[1].db.immed)); 2565 FWOHCI_DMA_WRITE(db[2].db.desc.addr, 2566 fwdma_bus_addr(it->buf, poffset) + sizeof(uint32_t)); 2567 2568 FWOHCI_DMA_WRITE(db[2].db.desc.cmd, 2569 OHCI_OUTPUT_LAST | OHCI_UPDATE | OHCI_BRANCH_ALWAYS); 2570#if 1 2571 FWOHCI_DMA_WRITE(db[0].db.desc.res, 0); 2572 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2573#endif 2574 return 0; 2575} 2576 2577int 2578fwohci_add_rx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2579 int poffset, struct fwdma_alloc *dummy_dma) 2580{ 2581 struct fwohcidb *db = db_tr->db; 2582 struct fw_xferq *ir; 2583 int i, ldesc; 2584 bus_addr_t dbuf[2]; 2585 int dsiz[2]; 2586 2587 ir = &dbch->xferq; 2588 if (ir->buf == NULL && (dbch->xferq.flag & FWXFERQ_EXTBUF) == 0) { 2589 db_tr->buf = fwdma_malloc_size(dbch->dmat, &db_tr->dma_map, 2590 ir->psize, &dbuf[0], BUS_DMA_NOWAIT); 2591 if (db_tr->buf == NULL) 2592 return(ENOMEM); 2593 db_tr->dbcnt = 1; 2594 dsiz[0] = ir->psize; 2595 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2596 BUS_DMASYNC_PREREAD); 2597 } else { 2598 db_tr->dbcnt = 0; 2599 if (dummy_dma != NULL) { 2600 dsiz[db_tr->dbcnt] = sizeof(uint32_t); 2601 dbuf[db_tr->dbcnt++] = dummy_dma->bus_addr; 2602 } 2603 dsiz[db_tr->dbcnt] = ir->psize; 2604 if (ir->buf != NULL) { 2605 db_tr->buf = fwdma_v_addr(ir->buf, poffset); 2606 dbuf[db_tr->dbcnt] = fwdma_bus_addr( ir->buf, poffset); 2607 } 2608 db_tr->dbcnt++; 2609 } 2610 for(i = 0 ; i < db_tr->dbcnt ; i++){ 2611 FWOHCI_DMA_WRITE(db[i].db.desc.addr, dbuf[i]); 2612 FWOHCI_DMA_WRITE(db[i].db.desc.cmd, OHCI_INPUT_MORE | dsiz[i]); 2613 if (ir->flag & FWXFERQ_STREAM) { 2614 FWOHCI_DMA_SET(db[i].db.desc.cmd, OHCI_UPDATE); 2615 } 2616 FWOHCI_DMA_WRITE(db[i].db.desc.res, dsiz[i]); 2617 } 2618 ldesc = db_tr->dbcnt - 1; 2619 if (ir->flag & FWXFERQ_STREAM) { 2620 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_INPUT_LAST); 2621 } 2622 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_BRANCH_ALWAYS); 2623 return 0; 2624} 2625 2626 2627static int 2628fwohci_arcv_swap(struct fw_pkt *fp, int len) 2629{ 2630 struct fw_pkt *fp0; 2631 uint32_t ld0; 2632 int slen, hlen; 2633#if BYTE_ORDER == BIG_ENDIAN 2634 int i; 2635#endif 2636 2637 ld0 = FWOHCI_DMA_READ(fp->mode.ld[0]); 2638#if 0 2639 printf("ld0: x%08x\n", ld0); 2640#endif 2641 fp0 = (struct fw_pkt *)&ld0; 2642 /* determine length to swap */ 2643 switch (fp0->mode.common.tcode) { 2644 case FWTCODE_RREQQ: 2645 case FWTCODE_WRES: 2646 case FWTCODE_WREQQ: 2647 case FWTCODE_RRESQ: 2648 case FWOHCITCODE_PHY: 2649 slen = 12; 2650 break; 2651 case FWTCODE_RREQB: 2652 case FWTCODE_WREQB: 2653 case FWTCODE_LREQ: 2654 case FWTCODE_RRESB: 2655 case FWTCODE_LRES: 2656 slen = 16; 2657 break; 2658 default: 2659 printf("Unknown tcode %d\n", fp0->mode.common.tcode); 2660 return(0); 2661 } 2662 hlen = tinfo[fp0->mode.common.tcode].hdr_len; 2663 if (hlen > len) { 2664 if (firewire_debug) 2665 printf("splitted header\n"); 2666 return(-hlen); 2667 } 2668#if BYTE_ORDER == BIG_ENDIAN 2669 for(i = 0; i < slen/4; i ++) 2670 fp->mode.ld[i] = FWOHCI_DMA_READ(fp->mode.ld[i]); 2671#endif 2672 return(hlen); 2673} 2674 2675static int 2676fwohci_get_plen(struct fwohci_softc *sc, struct fwohci_dbch *dbch, struct fw_pkt *fp) 2677{ 2678 struct tcode_info *info; 2679 int r; 2680 2681 info = &tinfo[fp->mode.common.tcode]; 2682 r = info->hdr_len + sizeof(uint32_t); 2683 if ((info->flag & FWTI_BLOCK_ASY) != 0) 2684 r += roundup2(fp->mode.wreqb.len, sizeof(uint32_t)); 2685 2686 if (r == sizeof(uint32_t)) { 2687 /* XXX */ 2688 device_printf(sc->fc.dev, "Unknown tcode %d\n", 2689 fp->mode.common.tcode); 2690 return (-1); 2691 } 2692 2693 if (r > dbch->xferq.psize) { 2694 device_printf(sc->fc.dev, "Invalid packet length %d\n", r); 2695 return (-1); 2696 /* panic ? */ 2697 } 2698 2699 return r; 2700} 2701 2702static void 2703fwohci_arcv_free_buf(struct fwohci_softc *sc, struct fwohci_dbch *dbch, 2704 struct fwohcidb_tr *db_tr, uint32_t off, int wake) 2705{ 2706 struct fwohcidb *db = &db_tr->db[0]; 2707 2708 FWOHCI_DMA_CLEAR(db->db.desc.depend, 0xf); 2709 FWOHCI_DMA_WRITE(db->db.desc.res, dbch->xferq.psize); 2710 FWOHCI_DMA_SET(dbch->bottom->db[0].db.desc.depend, 1); 2711 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 2712 dbch->bottom = db_tr; 2713 2714 if (wake) 2715 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 2716} 2717 2718static void 2719fwohci_arcv(struct fwohci_softc *sc, struct fwohci_dbch *dbch, int count) 2720{ 2721 struct fwohcidb_tr *db_tr; 2722 struct iovec vec[2]; 2723 struct fw_pkt pktbuf; 2724 int nvec; 2725 struct fw_pkt *fp; 2726 uint8_t *ld; 2727 uint32_t stat, off, status, event; 2728 u_int spd; 2729 int len, plen, hlen, pcnt, offset; 2730 int s; 2731 caddr_t buf; 2732 int resCount; 2733 2734 if(&sc->arrq == dbch){ 2735 off = OHCI_ARQOFF; 2736 }else if(&sc->arrs == dbch){ 2737 off = OHCI_ARSOFF; 2738 }else{ 2739 return; 2740 } 2741 2742 s = splfw(); 2743 db_tr = dbch->top; 2744 pcnt = 0; 2745 /* XXX we cannot handle a packet which lies in more than two buf */ 2746 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 2747 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 2748 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) >> OHCI_STATUS_SHIFT; 2749 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) & OHCI_COUNT_MASK; 2750 while (status & OHCI_CNTL_DMA_ACTIVE) { 2751#if 0 2752 2753 if (off == OHCI_ARQOFF) 2754 printf("buf 0x%08x, status 0x%04x, resCount 0x%04x\n", 2755 db_tr->bus_addr, status, resCount); 2756#endif 2757 len = dbch->xferq.psize - resCount; 2758 ld = (uint8_t *)db_tr->buf; 2759 if (dbch->pdb_tr == NULL) { 2760 len -= dbch->buf_offset; 2761 ld += dbch->buf_offset; 2762 } 2763 if (len > 0) 2764 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2765 BUS_DMASYNC_POSTREAD); 2766 while (len > 0 ) { 2767 if (count >= 0 && count-- == 0) 2768 goto out; 2769 if(dbch->pdb_tr != NULL){ 2770 /* we have a fragment in previous buffer */ 2771 int rlen; 2772 2773 offset = dbch->buf_offset; 2774 if (offset < 0) 2775 offset = - offset; 2776 buf = dbch->pdb_tr->buf + offset; 2777 rlen = dbch->xferq.psize - offset; 2778 if (firewire_debug) 2779 printf("rlen=%d, offset=%d\n", 2780 rlen, dbch->buf_offset); 2781 if (dbch->buf_offset < 0) { 2782 /* splitted in header, pull up */ 2783 char *p; 2784 2785 p = (char *)&pktbuf; 2786 bcopy(buf, p, rlen); 2787 p += rlen; 2788 /* this must be too long but harmless */ 2789 rlen = sizeof(pktbuf) - rlen; 2790 if (rlen < 0) 2791 printf("why rlen < 0\n"); 2792 bcopy(db_tr->buf, p, rlen); 2793 ld += rlen; 2794 len -= rlen; 2795 hlen = fwohci_arcv_swap(&pktbuf, sizeof(pktbuf)); 2796 if (hlen <= 0) { 2797 printf("hlen should be positive."); 2798 goto err; 2799 } 2800 offset = sizeof(pktbuf); 2801 vec[0].iov_base = (char *)&pktbuf; 2802 vec[0].iov_len = offset; 2803 } else { 2804 /* splitted in payload */ 2805 offset = rlen; 2806 vec[0].iov_base = buf; 2807 vec[0].iov_len = rlen; 2808 } 2809 fp=(struct fw_pkt *)vec[0].iov_base; 2810 nvec = 1; 2811 } else { 2812 /* no fragment in previous buffer */ 2813 fp=(struct fw_pkt *)ld; 2814 hlen = fwohci_arcv_swap(fp, len); 2815 if (hlen == 0) 2816 goto err; 2817 if (hlen < 0) { 2818 dbch->pdb_tr = db_tr; 2819 dbch->buf_offset = - dbch->buf_offset; 2820 /* sanity check */ 2821 if (resCount != 0) { 2822 printf("resCount=%d hlen=%d\n", 2823 resCount, hlen); 2824 goto err; 2825 } 2826 goto out; 2827 } 2828 offset = 0; 2829 nvec = 0; 2830 } 2831 plen = fwohci_get_plen(sc, dbch, fp) - offset; 2832 if (plen < 0) { 2833 /* minimum header size + trailer 2834 = sizeof(fw_pkt) so this shouldn't happens */ 2835 printf("plen(%d) is negative! offset=%d\n", 2836 plen, offset); 2837 goto err; 2838 } 2839 if (plen > 0) { 2840 len -= plen; 2841 if (len < 0) { 2842 dbch->pdb_tr = db_tr; 2843 if (firewire_debug) 2844 printf("splitted payload\n"); 2845 /* sanity check */ 2846 if (resCount != 0) { 2847 printf("resCount=%d plen=%d" 2848 " len=%d\n", 2849 resCount, plen, len); 2850 goto err; 2851 } 2852 goto out; 2853 } 2854 vec[nvec].iov_base = ld; 2855 vec[nvec].iov_len = plen; 2856 nvec ++; 2857 ld += plen; 2858 } 2859 dbch->buf_offset = ld - (uint8_t *)db_tr->buf; 2860 if (nvec == 0) 2861 printf("nvec == 0\n"); 2862 2863/* DMA result-code will be written at the tail of packet */ 2864 stat = FWOHCI_DMA_READ(*(uint32_t *)(ld - sizeof(struct fwohci_trailer))); 2865#if 0 2866 printf("plen: %d, stat %x\n", 2867 plen ,stat); 2868#endif 2869 spd = (stat >> 21) & 0x3; 2870 event = (stat >> 16) & 0x1f; 2871 switch (event) { 2872 case FWOHCIEV_ACKPEND: 2873#if 0 2874 printf("fwohci_arcv: ack pending tcode=0x%x..\n", fp->mode.common.tcode); 2875#endif 2876 /* fall through */ 2877 case FWOHCIEV_ACKCOMPL: 2878 { 2879 struct fw_rcv_buf rb; 2880 2881 if ((vec[nvec-1].iov_len -= 2882 sizeof(struct fwohci_trailer)) == 0) 2883 nvec--; 2884 rb.fc = &sc->fc; 2885 rb.vec = vec; 2886 rb.nvec = nvec; 2887 rb.spd = spd; 2888 fw_rcv(&rb); 2889 break; 2890 } 2891 case FWOHCIEV_BUSRST: 2892 if (sc->fc.status != FWBUSRESET) 2893 printf("got BUSRST packet!?\n"); 2894 break; 2895 default: 2896 device_printf(sc->fc.dev, 2897 "Async DMA Receive error err=%02x %s" 2898 " plen=%d offset=%d len=%d status=0x%08x" 2899 " tcode=0x%x, stat=0x%08x\n", 2900 event, fwohcicode[event], plen, 2901 dbch->buf_offset, len, 2902 OREAD(sc, OHCI_DMACTL(off)), 2903 fp->mode.common.tcode, stat); 2904#if 1 /* XXX */ 2905 goto err; 2906#endif 2907 break; 2908 } 2909 pcnt ++; 2910 if (dbch->pdb_tr != NULL) { 2911 fwohci_arcv_free_buf(sc, dbch, dbch->pdb_tr, 2912 off, 1); 2913 dbch->pdb_tr = NULL; 2914 } 2915 2916 } 2917out: 2918 if (resCount == 0) { 2919 /* done on this buffer */ 2920 if (dbch->pdb_tr == NULL) { 2921 fwohci_arcv_free_buf(sc, dbch, db_tr, off, 1); 2922 dbch->buf_offset = 0; 2923 } else 2924 if (dbch->pdb_tr != db_tr) 2925 printf("pdb_tr != db_tr\n"); 2926 db_tr = STAILQ_NEXT(db_tr, link); 2927 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2928 >> OHCI_STATUS_SHIFT; 2929 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2930 & OHCI_COUNT_MASK; 2931 /* XXX check buffer overrun */ 2932 dbch->top = db_tr; 2933 } else { 2934 dbch->buf_offset = dbch->xferq.psize - resCount; 2935 break; 2936 } 2937 /* XXX make sure DMA is not dead */ 2938 } 2939#if 0 2940 if (pcnt < 1) 2941 printf("fwohci_arcv: no packets\n"); 2942#endif 2943 splx(s); 2944 return; 2945 2946err: 2947 device_printf(sc->fc.dev, "AR DMA status=%x, ", 2948 OREAD(sc, OHCI_DMACTL(off))); 2949 dbch->pdb_tr = NULL; 2950 /* skip until resCount != 0 */ 2951 printf(" skip buffer"); 2952 while (resCount == 0) { 2953 printf(" #"); 2954 fwohci_arcv_free_buf(sc, dbch, db_tr, off, 0); 2955 db_tr = STAILQ_NEXT(db_tr, link); 2956 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2957 & OHCI_COUNT_MASK; 2958 } while (resCount == 0) 2959 printf(" done\n"); 2960 dbch->top = db_tr; 2961 dbch->buf_offset = dbch->xferq.psize - resCount; 2962 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 2963 splx(s); 2964} 2965