fwohci.c revision 111074
1/* 2 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the acknowledgement as bellow: 15 * 16 * This product includes software developed by K. Kobayashi and H. Shimokawa 17 * 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $FreeBSD: head/sys/dev/firewire/fwohci.c 111074 2003-02-18 09:39:48Z simokawa $ 34 * 35 */ 36 37#define ATRQ_CH 0 38#define ATRS_CH 1 39#define ARRQ_CH 2 40#define ARRS_CH 3 41#define ITX_CH 4 42#define IRX_CH 0x24 43 44#include <sys/param.h> 45#include <sys/proc.h> 46#include <sys/systm.h> 47#include <sys/types.h> 48#include <sys/mbuf.h> 49#include <sys/mman.h> 50#include <sys/socket.h> 51#include <sys/socketvar.h> 52#include <sys/signalvar.h> 53#include <sys/malloc.h> 54#include <sys/uio.h> 55#include <sys/sockio.h> 56#include <sys/bus.h> 57#include <sys/kernel.h> 58#include <sys/conf.h> 59 60#include <machine/bus.h> 61#include <machine/resource.h> 62#include <sys/rman.h> 63 64#include <machine/cpufunc.h> /* for rdtsc proto for clock.h below */ 65#include <machine/clock.h> 66#include <pci/pcivar.h> 67#include <pci/pcireg.h> 68#include <vm/vm.h> 69#include <vm/vm_extern.h> 70#include <vm/pmap.h> /* for vtophys proto */ 71 72#include <dev/firewire/firewire.h> 73#include <dev/firewire/firewirereg.h> 74#include <dev/firewire/fwohcireg.h> 75#include <dev/firewire/fwohcivar.h> 76#include <dev/firewire/firewire_phy.h> 77 78#include <dev/firewire/iec68113.h> 79 80#undef OHCI_DEBUG 81 82static char dbcode[16][0x10]={"OUTM", "OUTL","INPM","INPL", 83 "STOR","LOAD","NOP ","STOP",}; 84static char dbkey[8][0x10]={"ST0", "ST1","ST2","ST3", 85 "UNDEF","REG","SYS","DEV"}; 86char fwohcicode[32][0x20]={ 87 "No stat","Undef","long","miss Ack err", 88 "underrun","overrun","desc err", "data read err", 89 "data write err","bus reset","timeout","tcode err", 90 "Undef","Undef","unknown event","flushed", 91 "Undef","ack complete","ack pend","Undef", 92 "ack busy_X","ack busy_A","ack busy_B","Undef", 93 "Undef","Undef","Undef","ack tardy", 94 "Undef","ack data_err","ack type_err",""}; 95#define MAX_SPEED 2 96extern char linkspeed[MAX_SPEED+1][0x10]; 97static char dbcond[4][0x10]={"NEV","C=1", "C=0", "ALL"}; 98u_int32_t tagbit[4] = { 1 << 28, 1 << 29, 1 << 30, 1 << 31}; 99 100static struct tcode_info tinfo[] = { 101/* hdr_len block flag*/ 102/* 0 WREQQ */ {16, FWTI_REQ | FWTI_TLABEL}, 103/* 1 WREQB */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 104/* 2 WRES */ {12, FWTI_RES}, 105/* 3 XXX */ { 0, 0}, 106/* 4 RREQQ */ {12, FWTI_REQ | FWTI_TLABEL}, 107/* 5 RREQB */ {16, FWTI_REQ | FWTI_TLABEL}, 108/* 6 RRESQ */ {16, FWTI_RES}, 109/* 7 RRESB */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 110/* 8 CYCS */ { 0, 0}, 111/* 9 LREQ */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 112/* a STREAM */ { 4, FWTI_REQ | FWTI_BLOCK_STR}, 113/* b LRES */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 114/* c XXX */ { 0, 0}, 115/* d XXX */ { 0, 0}, 116/* e PHY */ {12, FWTI_REQ}, 117/* f XXX */ { 0, 0} 118}; 119 120#define OHCI_WRITE_SIGMASK 0xffff0000 121#define OHCI_READ_SIGMASK 0xffff0000 122 123#define OWRITE(sc, r, x) bus_space_write_4((sc)->bst, (sc)->bsh, (r), (x)) 124#define OREAD(sc, r) bus_space_read_4((sc)->bst, (sc)->bsh, (r)) 125 126static void fwohci_ibr __P((struct firewire_comm *)); 127static void fwohci_db_init __P((struct fwohci_dbch *)); 128static void fwohci_db_free __P((struct fwohci_dbch *)); 129static void fwohci_arcv __P((struct fwohci_softc *, struct fwohci_dbch *, int)); 130static void fwohci_ircv __P((struct fwohci_softc *, struct fwohci_dbch *, int)); 131static void fwohci_txd __P((struct fwohci_softc *, struct fwohci_dbch *)); 132static void fwohci_start_atq __P((struct firewire_comm *)); 133static void fwohci_start_ats __P((struct firewire_comm *)); 134static void fwohci_start __P((struct fwohci_softc *, struct fwohci_dbch *)); 135static void fwohci_drain_atq __P((struct firewire_comm *, struct fw_xfer *)); 136static void fwohci_drain_ats __P((struct firewire_comm *, struct fw_xfer *)); 137static void fwohci_drain __P((struct firewire_comm *, struct fw_xfer *, struct fwohci_dbch *)); 138static u_int32_t fwphy_wrdata __P(( struct fwohci_softc *, u_int32_t, u_int32_t)); 139static u_int32_t fwphy_rddata __P(( struct fwohci_softc *, u_int32_t)); 140static int fwohci_rx_enable __P((struct fwohci_softc *, struct fwohci_dbch *)); 141static int fwohci_tx_enable __P((struct fwohci_softc *, struct fwohci_dbch *)); 142static int fwohci_irx_enable __P((struct firewire_comm *, int)); 143static int fwohci_irxpp_enable __P((struct firewire_comm *, int)); 144static int fwohci_irxbuf_enable __P((struct firewire_comm *, int)); 145static int fwohci_irx_disable __P((struct firewire_comm *, int)); 146static void fwohci_irx_post __P((struct firewire_comm *, u_int32_t *)); 147static int fwohci_itxbuf_enable __P((struct firewire_comm *, int)); 148static int fwohci_itx_disable __P((struct firewire_comm *, int)); 149static void fwohci_timeout __P((void *)); 150static void fwohci_poll __P((struct firewire_comm *, int, int)); 151static void fwohci_set_intr __P((struct firewire_comm *, int)); 152static int fwohci_add_rx_buf __P((struct fwohcidb_tr *, unsigned short, int, void *, void *)); 153static int fwohci_add_tx_buf __P((struct fwohcidb_tr *, unsigned short, int, void *)); 154static void dump_db __P((struct fwohci_softc *, u_int32_t)); 155static void print_db __P((volatile struct fwohcidb *, u_int32_t , u_int32_t)); 156static void dump_dma __P((struct fwohci_softc *, u_int32_t)); 157static u_int32_t fwohci_cyctimer __P((struct firewire_comm *)); 158static void fwohci_rbuf_update __P((struct fwohci_softc *, int)); 159static void fwohci_tbuf_update __P((struct fwohci_softc *, int)); 160void fwohci_txbufdb __P((struct fwohci_softc *, int , struct fw_bulkxfer *)); 161 162/* 163 * memory allocated for DMA programs 164 */ 165#define DMA_PROG_ALLOC (8 * PAGE_SIZE) 166 167/* #define NDB 1024 */ 168#define NDB FWMAXQUEUE 169#define NDVDB (DVBUF * NDB) 170 171#define OHCI_VERSION 0x00 172#define OHCI_CROMHDR 0x18 173#define OHCI_BUS_OPT 0x20 174#define OHCI_BUSIRMC (1 << 31) 175#define OHCI_BUSCMC (1 << 30) 176#define OHCI_BUSISC (1 << 29) 177#define OHCI_BUSBMC (1 << 28) 178#define OHCI_BUSPMC (1 << 27) 179#define OHCI_BUSFNC OHCI_BUSIRMC | OHCI_BUSCMC | OHCI_BUSISC |\ 180 OHCI_BUSBMC | OHCI_BUSPMC 181 182#define OHCI_EUID_HI 0x24 183#define OHCI_EUID_LO 0x28 184 185#define OHCI_CROMPTR 0x34 186#define OHCI_HCCCTL 0x50 187#define OHCI_HCCCTLCLR 0x54 188#define OHCI_AREQHI 0x100 189#define OHCI_AREQHICLR 0x104 190#define OHCI_AREQLO 0x108 191#define OHCI_AREQLOCLR 0x10c 192#define OHCI_PREQHI 0x110 193#define OHCI_PREQHICLR 0x114 194#define OHCI_PREQLO 0x118 195#define OHCI_PREQLOCLR 0x11c 196#define OHCI_PREQUPPER 0x120 197 198#define OHCI_SID_BUF 0x64 199#define OHCI_SID_CNT 0x68 200#define OHCI_SID_CNT_MASK 0xffc 201 202#define OHCI_IT_STAT 0x90 203#define OHCI_IT_STATCLR 0x94 204#define OHCI_IT_MASK 0x98 205#define OHCI_IT_MASKCLR 0x9c 206 207#define OHCI_IR_STAT 0xa0 208#define OHCI_IR_STATCLR 0xa4 209#define OHCI_IR_MASK 0xa8 210#define OHCI_IR_MASKCLR 0xac 211 212#define OHCI_LNKCTL 0xe0 213#define OHCI_LNKCTLCLR 0xe4 214 215#define OHCI_PHYACCESS 0xec 216#define OHCI_CYCLETIMER 0xf0 217 218#define OHCI_DMACTL(off) (off) 219#define OHCI_DMACTLCLR(off) (off + 4) 220#define OHCI_DMACMD(off) (off + 0xc) 221#define OHCI_DMAMATCH(off) (off + 0x10) 222 223#define OHCI_ATQOFF 0x180 224#define OHCI_ATQCTL OHCI_ATQOFF 225#define OHCI_ATQCTLCLR (OHCI_ATQOFF + 4) 226#define OHCI_ATQCMD (OHCI_ATQOFF + 0xc) 227#define OHCI_ATQMATCH (OHCI_ATQOFF + 0x10) 228 229#define OHCI_ATSOFF 0x1a0 230#define OHCI_ATSCTL OHCI_ATSOFF 231#define OHCI_ATSCTLCLR (OHCI_ATSOFF + 4) 232#define OHCI_ATSCMD (OHCI_ATSOFF + 0xc) 233#define OHCI_ATSMATCH (OHCI_ATSOFF + 0x10) 234 235#define OHCI_ARQOFF 0x1c0 236#define OHCI_ARQCTL OHCI_ARQOFF 237#define OHCI_ARQCTLCLR (OHCI_ARQOFF + 4) 238#define OHCI_ARQCMD (OHCI_ARQOFF + 0xc) 239#define OHCI_ARQMATCH (OHCI_ARQOFF + 0x10) 240 241#define OHCI_ARSOFF 0x1e0 242#define OHCI_ARSCTL OHCI_ARSOFF 243#define OHCI_ARSCTLCLR (OHCI_ARSOFF + 4) 244#define OHCI_ARSCMD (OHCI_ARSOFF + 0xc) 245#define OHCI_ARSMATCH (OHCI_ARSOFF + 0x10) 246 247#define OHCI_ITOFF(CH) (0x200 + 0x10 * (CH)) 248#define OHCI_ITCTL(CH) (OHCI_ITOFF(CH)) 249#define OHCI_ITCTLCLR(CH) (OHCI_ITOFF(CH) + 4) 250#define OHCI_ITCMD(CH) (OHCI_ITOFF(CH) + 0xc) 251 252#define OHCI_IROFF(CH) (0x400 + 0x20 * (CH)) 253#define OHCI_IRCTL(CH) (OHCI_IROFF(CH)) 254#define OHCI_IRCTLCLR(CH) (OHCI_IROFF(CH) + 4) 255#define OHCI_IRCMD(CH) (OHCI_IROFF(CH) + 0xc) 256#define OHCI_IRMATCH(CH) (OHCI_IROFF(CH) + 0x10) 257 258d_ioctl_t fwohci_ioctl; 259 260/* 261 * Communication with PHY device 262 */ 263static u_int32_t 264fwphy_wrdata( struct fwohci_softc *sc, u_int32_t addr, u_int32_t data) 265{ 266 u_int32_t fun; 267 268 addr &= 0xf; 269 data &= 0xff; 270 271 fun = (PHYDEV_WRCMD | (addr << PHYDEV_REGADDR) | (data << PHYDEV_WRDATA)); 272 OWRITE(sc, OHCI_PHYACCESS, fun); 273 DELAY(100); 274 275 return(fwphy_rddata( sc, addr)); 276} 277 278static u_int32_t 279fwohci_set_bus_manager(struct firewire_comm *fc, u_int node) 280{ 281 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 282 int i; 283 u_int32_t bm; 284 285#define OHCI_CSR_DATA 0x0c 286#define OHCI_CSR_COMP 0x10 287#define OHCI_CSR_CONT 0x14 288#define OHCI_BUS_MANAGER_ID 0 289 290 OWRITE(sc, OHCI_CSR_DATA, node); 291 OWRITE(sc, OHCI_CSR_COMP, 0x3f); 292 OWRITE(sc, OHCI_CSR_CONT, OHCI_BUS_MANAGER_ID); 293 for (i = 0; !(OREAD(sc, OHCI_CSR_CONT) & (1<<31)) && (i < 1000); i++) 294 DELAY(10); 295 bm = OREAD(sc, OHCI_CSR_DATA); 296 if((bm & 0x3f) == 0x3f) 297 bm = node; 298 if (bootverbose) 299 device_printf(sc->fc.dev, 300 "fw_set_bus_manager: %d->%d (loop=%d)\n", bm, node, i); 301 302 return(bm); 303} 304 305static u_int32_t 306fwphy_rddata(struct fwohci_softc *sc, u_int addr) 307{ 308 u_int32_t fun, stat; 309 u_int i, retry = 0; 310 311 addr &= 0xf; 312#define MAX_RETRY 100 313again: 314 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_REG_FAIL); 315 fun = PHYDEV_RDCMD | (addr << PHYDEV_REGADDR); 316 OWRITE(sc, OHCI_PHYACCESS, fun); 317 for ( i = 0 ; i < MAX_RETRY ; i ++ ){ 318 fun = OREAD(sc, OHCI_PHYACCESS); 319 if ((fun & PHYDEV_RDCMD) == 0 && (fun & PHYDEV_RDDONE) != 0) 320 break; 321 DELAY(100); 322 } 323 if(i >= MAX_RETRY) { 324 if (bootverbose) 325 device_printf(sc->fc.dev, "phy read failed(1).\n"); 326 if (++retry < MAX_RETRY) { 327 DELAY(100); 328 goto again; 329 } 330 } 331 /* Make sure that SCLK is started */ 332 stat = OREAD(sc, FWOHCI_INTSTAT); 333 if ((stat & OHCI_INT_REG_FAIL) != 0 || 334 ((fun >> PHYDEV_REGADDR) & 0xf) != addr) { 335 if (bootverbose) 336 device_printf(sc->fc.dev, "phy read failed(2).\n"); 337 if (++retry < MAX_RETRY) { 338 DELAY(100); 339 goto again; 340 } 341 } 342 if (bootverbose || retry >= MAX_RETRY) 343 device_printf(sc->fc.dev, 344 "fwphy_rddata: loop=%d, retry=%d\n", i, retry); 345#undef MAX_RETRY 346 return((fun >> PHYDEV_RDDATA )& 0xff); 347} 348/* Device specific ioctl. */ 349int 350fwohci_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, fw_proc *td) 351{ 352 struct firewire_softc *sc; 353 struct fwohci_softc *fc; 354 int unit = DEV2UNIT(dev); 355 int err = 0; 356 struct fw_reg_req_t *reg = (struct fw_reg_req_t *) data; 357 u_int32_t *dmach = (u_int32_t *) data; 358 359 sc = devclass_get_softc(firewire_devclass, unit); 360 if(sc == NULL){ 361 return(EINVAL); 362 } 363 fc = (struct fwohci_softc *)sc->fc; 364 365 if (!data) 366 return(EINVAL); 367 368 switch (cmd) { 369 case FWOHCI_WRREG: 370#define OHCI_MAX_REG 0x800 371 if(reg->addr <= OHCI_MAX_REG){ 372 OWRITE(fc, reg->addr, reg->data); 373 reg->data = OREAD(fc, reg->addr); 374 }else{ 375 err = EINVAL; 376 } 377 break; 378 case FWOHCI_RDREG: 379 if(reg->addr <= OHCI_MAX_REG){ 380 reg->data = OREAD(fc, reg->addr); 381 }else{ 382 err = EINVAL; 383 } 384 break; 385/* Read DMA descriptors for debug */ 386 case DUMPDMA: 387 if(*dmach <= OHCI_MAX_DMA_CH ){ 388 dump_dma(fc, *dmach); 389 dump_db(fc, *dmach); 390 }else{ 391 err = EINVAL; 392 } 393 break; 394 default: 395 break; 396 } 397 return err; 398} 399 400static int 401fwohci_probe_phy(struct fwohci_softc *sc, device_t dev) 402{ 403 u_int32_t reg, reg2; 404 int e1394a = 1; 405/* 406 * probe PHY parameters 407 * 0. to prove PHY version, whether compliance of 1394a. 408 * 1. to probe maximum speed supported by the PHY and 409 * number of port supported by core-logic. 410 * It is not actually available port on your PC . 411 */ 412 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS); 413#if 0 414 /* XXX wait for SCLK. */ 415 DELAY(100000); 416#endif 417 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 418 419 if((reg >> 5) != 7 ){ 420 sc->fc.mode &= ~FWPHYASYST; 421 sc->fc.nport = reg & FW_PHY_NP; 422 sc->fc.speed = reg & FW_PHY_SPD >> 6; 423 if (sc->fc.speed > MAX_SPEED) { 424 device_printf(dev, "invalid speed %d (fixed to %d).\n", 425 sc->fc.speed, MAX_SPEED); 426 sc->fc.speed = MAX_SPEED; 427 } 428 device_printf(dev, 429 "Phy 1394 only %s, %d ports.\n", 430 linkspeed[sc->fc.speed], sc->fc.nport); 431 }else{ 432 reg2 = fwphy_rddata(sc, FW_PHY_ESPD_REG); 433 sc->fc.mode |= FWPHYASYST; 434 sc->fc.nport = reg & FW_PHY_NP; 435 sc->fc.speed = (reg2 & FW_PHY_ESPD) >> 5; 436 if (sc->fc.speed > MAX_SPEED) { 437 device_printf(dev, "invalid speed %d (fixed to %d).\n", 438 sc->fc.speed, MAX_SPEED); 439 sc->fc.speed = MAX_SPEED; 440 } 441 device_printf(dev, 442 "Phy 1394a available %s, %d ports.\n", 443 linkspeed[sc->fc.speed], sc->fc.nport); 444 445 /* check programPhyEnable */ 446 reg2 = fwphy_rddata(sc, 5); 447#if 0 448 if (e1394a && (OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_PRPHY)) { 449#else /* XXX force to enable 1394a */ 450 if (e1394a) { 451#endif 452 if (bootverbose) 453 device_printf(dev, 454 "Enable 1394a Enhancements\n"); 455 /* enable EAA EMC */ 456 reg2 |= 0x03; 457 /* set aPhyEnhanceEnable */ 458 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_PHYEN); 459 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_PRPHY); 460 } else { 461 /* for safe */ 462 reg2 &= ~0x83; 463 } 464 reg2 = fwphy_wrdata(sc, 5, reg2); 465 } 466 467 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 468 if((reg >> 5) == 7 ){ 469 reg = fwphy_rddata(sc, 4); 470 reg |= 1 << 6; 471 fwphy_wrdata(sc, 4, reg); 472 reg = fwphy_rddata(sc, 4); 473 } 474 return 0; 475} 476 477 478void 479fwohci_reset(struct fwohci_softc *sc, device_t dev) 480{ 481 int i, max_rec, speed; 482 u_int32_t reg, reg2; 483 struct fwohcidb_tr *db_tr; 484 485 /* Disable interrupt */ 486 OWRITE(sc, FWOHCI_INTMASKCLR, ~0); 487 488 /* Now stopping all DMA channel */ 489 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 490 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 491 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 492 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 493 494 OWRITE(sc, OHCI_IR_MASKCLR, ~0); 495 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 496 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 497 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 498 } 499 500 /* FLUSH FIFO and reset Transmitter/Reciever */ 501 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 502 if (bootverbose) 503 device_printf(dev, "resetting OHCI..."); 504 i = 0; 505 while(OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_RESET) { 506 if (i++ > 100) break; 507 DELAY(1000); 508 } 509 if (bootverbose) 510 printf("done (loop=%d)\n", i); 511 512 /* Probe phy */ 513 fwohci_probe_phy(sc, dev); 514 515 /* Probe link */ 516 reg = OREAD(sc, OHCI_BUS_OPT); 517 reg2 = reg | OHCI_BUSFNC; 518 max_rec = (reg & 0x0000f000) >> 12; 519 speed = (reg & 0x00000007); 520 device_printf(dev, "Link %s, max_rec %d bytes.\n", 521 linkspeed[speed], MAXREC(max_rec)); 522 /* XXX fix max_rec */ 523 sc->fc.maxrec = sc->fc.speed + 8; 524 if (max_rec != sc->fc.maxrec) { 525 reg2 = (reg2 & 0xffff0fff) | (sc->fc.maxrec << 12); 526 device_printf(dev, "max_rec %d -> %d\n", 527 MAXREC(max_rec), MAXREC(sc->fc.maxrec)); 528 } 529 if (bootverbose) 530 device_printf(dev, "BUS_OPT 0x%x -> 0x%x\n", reg, reg2); 531 OWRITE(sc, OHCI_BUS_OPT, reg2); 532 533 /* Initialize registers */ 534 OWRITE(sc, OHCI_CROMHDR, sc->fc.config_rom[0]); 535 OWRITE(sc, OHCI_CROMPTR, vtophys(&sc->fc.config_rom[0])); 536 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_BIGEND); 537 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_POSTWR); 538 OWRITE(sc, OHCI_SID_BUF, vtophys(sc->fc.sid_buf)); 539 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_SID); 540 fw_busreset(&sc->fc); 541 542 /* Enable link */ 543 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LINKEN); 544 545 /* Force to start async RX DMA */ 546 sc->arrq.xferq.flag &= ~FWXFERQ_RUNNING; 547 sc->arrs.xferq.flag &= ~FWXFERQ_RUNNING; 548 fwohci_rx_enable(sc, &sc->arrq); 549 fwohci_rx_enable(sc, &sc->arrs); 550 551 /* Initialize async TX */ 552 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 553 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 554 /* AT Retries */ 555 OWRITE(sc, FWOHCI_RETRY, 556 /* CycleLimit PhyRespRetries ATRespRetries ATReqRetries */ 557 (0xffff << 16 ) | (0x0f << 8) | (0x0f << 4) | 0x0f) ; 558 for( i = 0, db_tr = sc->atrq.top; i < sc->atrq.ndb ; 559 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 560 db_tr->xfer = NULL; 561 } 562 for( i = 0, db_tr = sc->atrs.top; i < sc->atrs.ndb ; 563 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 564 db_tr->xfer = NULL; 565 } 566 567 568 /* Enable interrupt */ 569 OWRITE(sc, FWOHCI_INTMASK, 570 OHCI_INT_ERR | OHCI_INT_PHY_SID 571 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 572 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 573 | OHCI_INT_PHY_BUS_R | OHCI_INT_PW_ERR); 574 fwohci_set_intr(&sc->fc, 1); 575 576} 577 578int 579fwohci_init(struct fwohci_softc *sc, device_t dev) 580{ 581 int i; 582 u_int32_t reg; 583 u_int8_t ui[8]; 584 585 reg = OREAD(sc, OHCI_VERSION); 586 device_printf(dev, "OHCI version %x.%x (ROM=%d)\n", 587 (reg>>16) & 0xff, reg & 0xff, (reg>>24) & 1); 588 589/* Available Isochrounous DMA channel probe */ 590 OWRITE(sc, OHCI_IT_MASK, 0xffffffff); 591 OWRITE(sc, OHCI_IR_MASK, 0xffffffff); 592 reg = OREAD(sc, OHCI_IT_MASK) & OREAD(sc, OHCI_IR_MASK); 593 OWRITE(sc, OHCI_IT_MASKCLR, 0xffffffff); 594 OWRITE(sc, OHCI_IR_MASKCLR, 0xffffffff); 595 for (i = 0; i < 0x20; i++) 596 if ((reg & (1 << i)) == 0) 597 break; 598 sc->fc.nisodma = i; 599 device_printf(dev, "No. of Isochronous channel is %d.\n", i); 600 601 sc->fc.arq = &sc->arrq.xferq; 602 sc->fc.ars = &sc->arrs.xferq; 603 sc->fc.atq = &sc->atrq.xferq; 604 sc->fc.ats = &sc->atrs.xferq; 605 606 sc->arrq.xferq.start = NULL; 607 sc->arrs.xferq.start = NULL; 608 sc->atrq.xferq.start = fwohci_start_atq; 609 sc->atrs.xferq.start = fwohci_start_ats; 610 611 sc->arrq.xferq.drain = NULL; 612 sc->arrs.xferq.drain = NULL; 613 sc->atrq.xferq.drain = fwohci_drain_atq; 614 sc->atrs.xferq.drain = fwohci_drain_ats; 615 616 sc->arrq.ndesc = 1; 617 sc->arrs.ndesc = 1; 618 sc->atrq.ndesc = 8; /* equal to maximum of mbuf chains */ 619 sc->atrs.ndesc = 2; 620 621 sc->arrq.ndb = NDB; 622 sc->arrs.ndb = NDB / 2; 623 sc->atrq.ndb = NDB; 624 sc->atrs.ndb = NDB / 2; 625 626 sc->arrq.dummy = NULL; 627 sc->arrs.dummy = NULL; 628 sc->atrq.dummy = NULL; 629 sc->atrs.dummy = NULL; 630 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 631 sc->fc.it[i] = &sc->it[i].xferq; 632 sc->fc.ir[i] = &sc->ir[i].xferq; 633 sc->it[i].ndb = 0; 634 sc->ir[i].ndb = 0; 635 } 636 637 sc->fc.tcode = tinfo; 638 639 sc->cromptr = (u_int32_t *) malloc(CROMSIZE * 2, M_FW, M_NOWAIT); 640 641 if(sc->cromptr == NULL){ 642 device_printf(dev, "cromptr alloc failed."); 643 return ENOMEM; 644 } 645 sc->fc.dev = dev; 646 sc->fc.config_rom = &(sc->cromptr[CROMSIZE/4]); 647 648 sc->fc.config_rom[1] = 0x31333934; 649 sc->fc.config_rom[2] = 0xf000a002; 650 sc->fc.config_rom[3] = OREAD(sc, OHCI_EUID_HI); 651 sc->fc.config_rom[4] = OREAD(sc, OHCI_EUID_LO); 652 sc->fc.config_rom[5] = 0; 653 sc->fc.config_rom[0] = (4 << 24) | (5 << 16); 654 655 sc->fc.config_rom[0] |= fw_crc16(&sc->fc.config_rom[1], 5*4); 656 657 658/* SID recieve buffer must allign 2^11 */ 659#define OHCI_SIDSIZE (1 << 11) 660 sc->fc.sid_buf = (u_int32_t *) malloc(OHCI_SIDSIZE, M_FW, M_NOWAIT); 661 if (sc->fc.sid_buf == NULL) { 662 device_printf(dev, "sid_buf alloc failed.\n"); 663 return ENOMEM; 664 } 665 if (((vm_offset_t) sc->fc.sid_buf & (OHCI_SIDSIZE - 1)) != 0) { 666 device_printf(dev, "sid_buf(%p) not aligned.\n", 667 sc->fc.sid_buf); 668 return ENOMEM; 669 } 670 671 fwohci_db_init(&sc->arrq); 672 if ((sc->arrq.flags & FWOHCI_DBCH_INIT) == 0) 673 return ENOMEM; 674 675 fwohci_db_init(&sc->arrs); 676 if ((sc->arrs.flags & FWOHCI_DBCH_INIT) == 0) 677 return ENOMEM; 678 679 fwohci_db_init(&sc->atrq); 680 if ((sc->atrq.flags & FWOHCI_DBCH_INIT) == 0) 681 return ENOMEM; 682 683 fwohci_db_init(&sc->atrs); 684 if ((sc->atrs.flags & FWOHCI_DBCH_INIT) == 0) 685 return ENOMEM; 686 687 sc->fc.eui.hi = OREAD(sc, FWOHCIGUID_H); 688 sc->fc.eui.lo = OREAD(sc, FWOHCIGUID_L); 689 for( i = 0 ; i < 8 ; i ++) 690 ui[i] = FW_EUI64_BYTE(&sc->fc.eui,i); 691 device_printf(dev, "EUI64 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", 692 ui[0], ui[1], ui[2], ui[3], ui[4], ui[5], ui[6], ui[7]); 693 694 sc->fc.ioctl = fwohci_ioctl; 695 sc->fc.cyctimer = fwohci_cyctimer; 696 sc->fc.set_bmr = fwohci_set_bus_manager; 697 sc->fc.ibr = fwohci_ibr; 698 sc->fc.irx_enable = fwohci_irx_enable; 699 sc->fc.irx_disable = fwohci_irx_disable; 700 701 sc->fc.itx_enable = fwohci_itxbuf_enable; 702 sc->fc.itx_disable = fwohci_itx_disable; 703 sc->fc.irx_post = fwohci_irx_post; 704 sc->fc.itx_post = NULL; 705 sc->fc.timeout = fwohci_timeout; 706 sc->fc.poll = fwohci_poll; 707 sc->fc.set_intr = fwohci_set_intr; 708 709 fw_init(&sc->fc); 710 fwohci_reset(sc, dev); 711 712 return 0; 713} 714 715void 716fwohci_timeout(void *arg) 717{ 718 struct fwohci_softc *sc; 719 720 sc = (struct fwohci_softc *)arg; 721} 722 723u_int32_t 724fwohci_cyctimer(struct firewire_comm *fc) 725{ 726 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 727 return(OREAD(sc, OHCI_CYCLETIMER)); 728} 729 730int 731fwohci_detach(struct fwohci_softc *sc, device_t dev) 732{ 733 int i; 734 735 if (sc->fc.sid_buf != NULL) 736 free((void *)(uintptr_t)sc->fc.sid_buf, M_FW); 737 if (sc->cromptr != NULL) 738 free((void *)sc->cromptr, M_FW); 739 740 fwohci_db_free(&sc->arrq); 741 fwohci_db_free(&sc->arrs); 742 743 fwohci_db_free(&sc->atrq); 744 fwohci_db_free(&sc->atrs); 745 746 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 747 fwohci_db_free(&sc->it[i]); 748 fwohci_db_free(&sc->ir[i]); 749 } 750 751 return 0; 752} 753 754#define LAST_DB(dbtr, db) do { \ 755 struct fwohcidb_tr *_dbtr = (dbtr); \ 756 int _cnt = _dbtr->dbcnt; \ 757 db = &_dbtr->db[ (_cnt > 2) ? (_cnt -1) : 0]; \ 758} while (0) 759 760static void 761fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 762{ 763 int i, s; 764 int tcode, hdr_len, hdr_off, len; 765 int fsegment = -1; 766 u_int32_t off; 767 struct fw_xfer *xfer; 768 struct fw_pkt *fp; 769 volatile struct fwohci_txpkthdr *ohcifp; 770 struct fwohcidb_tr *db_tr; 771 volatile struct fwohcidb *db; 772 struct mbuf *m; 773 struct tcode_info *info; 774 static int maxdesc=0; 775 776 if(&sc->atrq == dbch){ 777 off = OHCI_ATQOFF; 778 }else if(&sc->atrs == dbch){ 779 off = OHCI_ATSOFF; 780 }else{ 781 return; 782 } 783 784 if (dbch->flags & FWOHCI_DBCH_FULL) 785 return; 786 787 s = splfw(); 788 db_tr = dbch->top; 789txloop: 790 xfer = STAILQ_FIRST(&dbch->xferq.q); 791 if(xfer == NULL){ 792 goto kick; 793 } 794 if(dbch->xferq.queued == 0 ){ 795 device_printf(sc->fc.dev, "TX queue empty\n"); 796 } 797 STAILQ_REMOVE_HEAD(&dbch->xferq.q, link); 798 db_tr->xfer = xfer; 799 xfer->state = FWXF_START; 800 dbch->xferq.packets++; 801 802 fp = (struct fw_pkt *)(xfer->send.buf + xfer->send.off); 803 tcode = fp->mode.common.tcode; 804 805 ohcifp = (volatile struct fwohci_txpkthdr *) db_tr->db[1].db.immed; 806 info = &tinfo[tcode]; 807 hdr_len = hdr_off = info->hdr_len; 808 /* fw_asyreq must pass valid send.len */ 809 len = xfer->send.len; 810 for( i = 0 ; i < hdr_off ; i+= 4){ 811 ohcifp->mode.ld[i/4] = ntohl(fp->mode.ld[i/4]); 812 } 813 ohcifp->mode.common.spd = xfer->spd; 814 if (tcode == FWTCODE_STREAM ){ 815 hdr_len = 8; 816 ohcifp->mode.stream.len = ntohs(fp->mode.stream.len); 817 } else if (tcode == FWTCODE_PHY) { 818 hdr_len = 12; 819 ohcifp->mode.ld[1] = ntohl(fp->mode.ld[1]); 820 ohcifp->mode.ld[2] = ntohl(fp->mode.ld[2]); 821 ohcifp->mode.common.spd = 0; 822 ohcifp->mode.common.tcode = FWOHCITCODE_PHY; 823 } else { 824 ohcifp->mode.asycomm.dst = ntohs(fp->mode.hdr.dst); 825 ohcifp->mode.asycomm.srcbus = OHCI_ASYSRCBUS; 826 ohcifp->mode.asycomm.tlrt |= FWRETRY_X; 827 } 828 db = &db_tr->db[0]; 829 db->db.desc.control = OHCI_OUTPUT_MORE | OHCI_KEY_ST2; 830 db->db.desc.reqcount = hdr_len; 831 db->db.desc.status = 0; 832/* Specify bound timer of asy. responce */ 833 if(&sc->atrs == dbch){ 834 db->db.desc.count 835 = (OREAD(sc, OHCI_CYCLETIMER) >> 12) + (1 << 13); 836 } 837 838 db_tr->dbcnt = 2; 839 db = &db_tr->db[db_tr->dbcnt]; 840 if(len > hdr_off){ 841 if (xfer->mbuf == NULL) { 842 db->db.desc.addr 843 = vtophys(xfer->send.buf + xfer->send.off) + hdr_off; 844 db->db.desc.control = OHCI_OUTPUT_MORE; 845 db->db.desc.reqcount = len - hdr_off; 846 db->db.desc.status = 0; 847 848 db_tr->dbcnt++; 849 } else { 850 int mchain=0; 851 /* XXX we assume mbuf chain is shorter than ndesc */ 852 for (m = xfer->mbuf; m != NULL; m = m->m_next) { 853 if (m->m_len == 0) 854 /* unrecoverable error could occur. */ 855 continue; 856 mchain++; 857 if (db_tr->dbcnt >= dbch->ndesc) 858 continue; 859 db->db.desc.addr 860 = vtophys(mtod(m, caddr_t)); 861 db->db.desc.control = OHCI_OUTPUT_MORE; 862 db->db.desc.reqcount = m->m_len; 863 db->db.desc.status = 0; 864 db++; 865 db_tr->dbcnt++; 866 } 867 if (mchain > dbch->ndesc - 2) 868 device_printf(sc->fc.dev, 869 "dbch->ndesc(%d) is too small for" 870 " mbuf chain(%d), trancated.\n", 871 dbch->ndesc, mchain); 872 } 873 } 874 if (maxdesc < db_tr->dbcnt) { 875 maxdesc = db_tr->dbcnt; 876 if (bootverbose) 877 device_printf(sc->fc.dev, "maxdesc: %d\n", maxdesc); 878 } 879 /* last db */ 880 LAST_DB(db_tr, db); 881 db->db.desc.control |= OHCI_OUTPUT_LAST 882 | OHCI_INTERRUPT_ALWAYS 883 | OHCI_BRANCH_ALWAYS; 884 db->db.desc.depend = vtophys(STAILQ_NEXT(db_tr, link)->db); 885 886 if(fsegment == -1 ) 887 fsegment = db_tr->dbcnt; 888 if (dbch->pdb_tr != NULL) { 889 LAST_DB(dbch->pdb_tr, db); 890 db->db.desc.depend |= db_tr->dbcnt; 891 } 892 dbch->pdb_tr = db_tr; 893 db_tr = STAILQ_NEXT(db_tr, link); 894 if(db_tr != dbch->bottom){ 895 goto txloop; 896 } else { 897 device_printf(sc->fc.dev, "fwohci_start: lack of db_trq\n"); 898 dbch->flags |= FWOHCI_DBCH_FULL; 899 } 900kick: 901 /* kick asy q */ 902 903 if(dbch->xferq.flag & FWXFERQ_RUNNING) { 904 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 905 } else { 906 if (bootverbose) 907 device_printf(sc->fc.dev, "start AT DMA status=%x\n", 908 OREAD(sc, OHCI_DMACTL(off))); 909 OWRITE(sc, OHCI_DMACMD(off), vtophys(dbch->top->db) | fsegment); 910 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 911 dbch->xferq.flag |= FWXFERQ_RUNNING; 912 } 913 914 dbch->top = db_tr; 915 splx(s); 916 return; 917} 918 919static void 920fwohci_drain_atq(struct firewire_comm *fc, struct fw_xfer *xfer) 921{ 922 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 923 fwohci_drain(&sc->fc, xfer, &(sc->atrq)); 924 return; 925} 926 927static void 928fwohci_drain_ats(struct firewire_comm *fc, struct fw_xfer *xfer) 929{ 930 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 931 fwohci_drain(&sc->fc, xfer, &(sc->atrs)); 932 return; 933} 934 935static void 936fwohci_start_atq(struct firewire_comm *fc) 937{ 938 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 939 fwohci_start( sc, &(sc->atrq)); 940 return; 941} 942 943static void 944fwohci_start_ats(struct firewire_comm *fc) 945{ 946 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 947 fwohci_start( sc, &(sc->atrs)); 948 return; 949} 950 951void 952fwohci_txd(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 953{ 954 int s, err = 0; 955 struct fwohcidb_tr *tr; 956 volatile struct fwohcidb *db; 957 struct fw_xfer *xfer; 958 u_int32_t off; 959 u_int stat; 960 int packets; 961 struct firewire_comm *fc = (struct firewire_comm *)sc; 962 if(&sc->atrq == dbch){ 963 off = OHCI_ATQOFF; 964 }else if(&sc->atrs == dbch){ 965 off = OHCI_ATSOFF; 966 }else{ 967 return; 968 } 969 s = splfw(); 970 tr = dbch->bottom; 971 packets = 0; 972 while(dbch->xferq.queued > 0){ 973 LAST_DB(tr, db); 974 if(!(db->db.desc.status & OHCI_CNTL_DMA_ACTIVE)){ 975 if (fc->status != FWBUSRESET) 976 /* maybe out of order?? */ 977 goto out; 978 } 979 if(db->db.desc.status & OHCI_CNTL_DMA_DEAD) { 980#ifdef OHCI_DEBUG 981 dump_dma(sc, ch); 982 dump_db(sc, ch); 983#endif 984/* Stop DMA */ 985 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 986 device_printf(sc->fc.dev, "force reset AT FIFO\n"); 987 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_LINKEN); 988 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS | OHCI_HCC_LINKEN); 989 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 990 } 991 stat = db->db.desc.status & FWOHCIEV_MASK; 992 switch(stat){ 993 case FWOHCIEV_ACKPEND: 994 case FWOHCIEV_ACKCOMPL: 995 err = 0; 996 break; 997 case FWOHCIEV_ACKBSA: 998 case FWOHCIEV_ACKBSB: 999 case FWOHCIEV_ACKBSX: 1000 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1001 err = EBUSY; 1002 break; 1003 case FWOHCIEV_FLUSHED: 1004 case FWOHCIEV_ACKTARD: 1005 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1006 err = EAGAIN; 1007 break; 1008 case FWOHCIEV_MISSACK: 1009 case FWOHCIEV_UNDRRUN: 1010 case FWOHCIEV_OVRRUN: 1011 case FWOHCIEV_DESCERR: 1012 case FWOHCIEV_DTRDERR: 1013 case FWOHCIEV_TIMEOUT: 1014 case FWOHCIEV_TCODERR: 1015 case FWOHCIEV_UNKNOWN: 1016 case FWOHCIEV_ACKDERR: 1017 case FWOHCIEV_ACKTERR: 1018 default: 1019 device_printf(sc->fc.dev, "txd err=%2x %s\n", 1020 stat, fwohcicode[stat]); 1021 err = EINVAL; 1022 break; 1023 } 1024 if (tr->xfer != NULL) { 1025 xfer = tr->xfer; 1026 xfer->state = FWXF_SENT; 1027 if (err == EBUSY && fc->status != FWBUSRESET) { 1028 xfer->state = FWXF_BUSY; 1029 switch (xfer->act_type) { 1030 case FWACT_XFER: 1031 xfer->resp = err; 1032 if (xfer->retry_req != NULL) 1033 xfer->retry_req(xfer); 1034 else 1035 fw_xfer_done(xfer); 1036 break; 1037 default: 1038 break; 1039 } 1040 } else if (stat != FWOHCIEV_ACKPEND) { 1041 if (stat != FWOHCIEV_ACKCOMPL) 1042 xfer->state = FWXF_SENTERR; 1043 xfer->resp = err; 1044 switch (xfer->act_type) { 1045 case FWACT_XFER: 1046 fw_xfer_done(xfer); 1047 break; 1048 default: 1049 break; 1050 } 1051 } 1052 /* 1053 * The watchdog timer takes care of split 1054 * transcation timeout for ACKPEND case. 1055 */ 1056 } 1057 dbch->xferq.queued --; 1058 tr->xfer = NULL; 1059 1060 packets ++; 1061 tr = STAILQ_NEXT(tr, link); 1062 dbch->bottom = tr; 1063 } 1064out: 1065 if ((dbch->flags & FWOHCI_DBCH_FULL) && packets > 0) { 1066 printf("make free slot\n"); 1067 dbch->flags &= ~FWOHCI_DBCH_FULL; 1068 fwohci_start(sc, dbch); 1069 } 1070 splx(s); 1071} 1072 1073static void 1074fwohci_drain(struct firewire_comm *fc, struct fw_xfer *xfer, struct fwohci_dbch *dbch) 1075{ 1076 int i, s, found=0; 1077 struct fwohcidb_tr *tr; 1078 1079 if(xfer->state != FWXF_START) return; 1080 1081 s = splfw(); 1082 tr = dbch->bottom; 1083 for (i = 0; i < dbch->xferq.queued; i ++) { 1084 if(tr->xfer == xfer){ 1085 tr->xfer = NULL; 1086#if 0 1087 dbch->xferq.queued --; 1088 /* XXX */ 1089 if (tr == dbch->bottom) 1090 dbch->bottom = STAILQ_NEXT(tr, link); 1091 if (dbch->flags & FWOHCI_DBCH_FULL) { 1092 printf("fwohci_drain: make slot\n"); 1093 dbch->flags &= ~FWOHCI_DBCH_FULL; 1094 fwohci_start((struct fwohci_softc *)fc, dbch); 1095 } 1096#endif 1097 found ++; 1098 break; 1099 } 1100 tr = STAILQ_NEXT(tr, link); 1101 } 1102 splx(s); 1103 if (!found) 1104 device_printf(fc->dev, "fwochi_drain: xfer not found\n"); 1105 return; 1106} 1107 1108static void 1109fwohci_db_free(struct fwohci_dbch *dbch) 1110{ 1111 struct fwohcidb_tr *db_tr; 1112 int idb, i; 1113 1114 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1115 return; 1116 1117 if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){ 1118 for(db_tr = STAILQ_FIRST(&dbch->db_trq), idb = 0; 1119 idb < dbch->ndb; 1120 db_tr = STAILQ_NEXT(db_tr, link), idb++){ 1121 if (db_tr->buf != NULL) { 1122 free(db_tr->buf, M_FW); 1123 db_tr->buf = NULL; 1124 } 1125 } 1126 } 1127 dbch->ndb = 0; 1128 db_tr = STAILQ_FIRST(&dbch->db_trq); 1129 for (i = 0; i < dbch->npages; i++) 1130 free(dbch->pages[i], M_FW); 1131 free(db_tr, M_FW); 1132 STAILQ_INIT(&dbch->db_trq); 1133 dbch->flags &= ~FWOHCI_DBCH_INIT; 1134} 1135 1136static void 1137fwohci_db_init(struct fwohci_dbch *dbch) 1138{ 1139 int idb; 1140 struct fwohcidb_tr *db_tr; 1141 int ndbpp, i, j; 1142 1143 if ((dbch->flags & FWOHCI_DBCH_INIT) != 0) 1144 goto out; 1145 1146 /* allocate DB entries and attach one to each DMA channels */ 1147 /* DB entry must start at 16 bytes bounary. */ 1148 STAILQ_INIT(&dbch->db_trq); 1149 db_tr = (struct fwohcidb_tr *) 1150 malloc(sizeof(struct fwohcidb_tr) * dbch->ndb, 1151 M_FW, M_ZERO); 1152 if(db_tr == NULL){ 1153 printf("fwohci_db_init: malloc(1) failed\n"); 1154 return; 1155 } 1156 1157 ndbpp = PAGE_SIZE / (sizeof(struct fwohcidb) * dbch->ndesc); 1158 dbch->npages = (dbch->ndb + ndbpp - 1)/ ndbpp; 1159 if (firewire_debug) 1160 printf("ndesc: %d, ndbpp: %d, ndb: %d, npages: %d\n", 1161 dbch->ndesc, ndbpp, dbch->ndb, dbch->npages); 1162 if (dbch->npages > FWOHCI_DBCH_MAX_PAGES) { 1163 printf("npages(%d) > DBCH_MAX_PAGES(%d)\n", 1164 dbch->npages, FWOHCI_DBCH_MAX_PAGES); 1165 return; 1166 } 1167 for (i = 0; i < dbch->npages; i++) { 1168 dbch->pages[i] = malloc(PAGE_SIZE, M_FW, M_ZERO); 1169 if (dbch->pages[i] == NULL) { 1170 printf("fwohci_db_init: malloc(2) failed\n"); 1171 for (j = 0; j < i; j ++) 1172 free(dbch->pages[j], M_FW); 1173 free(db_tr, M_FW); 1174 return; 1175 } 1176 } 1177 /* Attach DB to DMA ch. */ 1178 for(idb = 0 ; idb < dbch->ndb ; idb++){ 1179 db_tr->dbcnt = 0; 1180 db_tr->db = (struct fwohcidb *)dbch->pages[idb/ndbpp] 1181 + dbch->ndesc * (idb % ndbpp); 1182 STAILQ_INSERT_TAIL(&dbch->db_trq, db_tr, link); 1183 if (!(dbch->xferq.flag & FWXFERQ_PACKET) && 1184 dbch->xferq.bnpacket != 0) { 1185 if (idb % dbch->xferq.bnpacket == 0) 1186 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1187 ].start = (caddr_t)db_tr; 1188 if ((idb + 1) % dbch->xferq.bnpacket == 0) 1189 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1190 ].end = (caddr_t)db_tr; 1191 } 1192 db_tr++; 1193 } 1194 STAILQ_LAST(&dbch->db_trq, fwohcidb_tr,link)->link.stqe_next 1195 = STAILQ_FIRST(&dbch->db_trq); 1196out: 1197 dbch->frag.buf = NULL; 1198 dbch->frag.len = 0; 1199 dbch->frag.plen = 0; 1200 dbch->xferq.queued = 0; 1201 dbch->pdb_tr = NULL; 1202 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1203 dbch->bottom = dbch->top; 1204 dbch->flags = FWOHCI_DBCH_INIT; 1205} 1206 1207static int 1208fwohci_itx_disable(struct firewire_comm *fc, int dmach) 1209{ 1210 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1211 int dummy; 1212 1213 OWRITE(sc, OHCI_ITCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1214 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1215 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1216 /* XXX we cannot free buffers until the DMA really stops */ 1217 tsleep((void *)&dummy, FWPRI, "fwitxd", hz); 1218 fwohci_db_free(&sc->it[dmach]); 1219 sc->it[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1220 return 0; 1221} 1222 1223static int 1224fwohci_irx_disable(struct firewire_comm *fc, int dmach) 1225{ 1226 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1227 int dummy; 1228 1229 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1230 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1231 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1232 /* XXX we cannot free buffers until the DMA really stops */ 1233 tsleep((void *)&dummy, FWPRI, "fwirxd", hz); 1234 if(sc->ir[dmach].dummy != NULL){ 1235 free(sc->ir[dmach].dummy, M_FW); 1236 } 1237 sc->ir[dmach].dummy = NULL; 1238 fwohci_db_free(&sc->ir[dmach]); 1239 sc->ir[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1240 return 0; 1241} 1242 1243static void 1244fwohci_irx_post (struct firewire_comm *fc , u_int32_t *qld) 1245{ 1246 qld[0] = ntohl(qld[0]); 1247 return; 1248} 1249 1250static int 1251fwohci_irxpp_enable(struct firewire_comm *fc, int dmach) 1252{ 1253 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1254 int err = 0; 1255 unsigned short tag, ich; 1256 1257 tag = (sc->ir[dmach].xferq.flag >> 6) & 3; 1258 ich = sc->ir[dmach].xferq.flag & 0x3f; 1259 1260#if 0 1261 if(STAILQ_FIRST(&fc->ir[dmach]->q) != NULL){ 1262 wakeup(fc->ir[dmach]); 1263 return err; 1264 } 1265#endif 1266 1267 OWRITE(sc, OHCI_IRMATCH(dmach), tagbit[tag] | ich); 1268 if(!(sc->ir[dmach].xferq.flag & FWXFERQ_RUNNING)){ 1269 sc->ir[dmach].xferq.queued = 0; 1270 sc->ir[dmach].ndb = NDB; 1271 sc->ir[dmach].xferq.psize = PAGE_SIZE; 1272 sc->ir[dmach].ndesc = 1; 1273 fwohci_db_init(&sc->ir[dmach]); 1274 if ((sc->ir[dmach].flags & FWOHCI_DBCH_INIT) == 0) 1275 return ENOMEM; 1276 err = fwohci_rx_enable(sc, &sc->ir[dmach]); 1277 } 1278 if(err){ 1279 device_printf(sc->fc.dev, "err in IRX setting\n"); 1280 return err; 1281 } 1282 if(!(OREAD(sc, OHCI_IRCTL(dmach)) & OHCI_CNTL_DMA_ACTIVE)){ 1283 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1284 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1285 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1286 OWRITE(sc, OHCI_IR_MASK, 1 << dmach); 1287 OWRITE(sc, OHCI_IRCTLCLR(dmach), 0xf8000000); 1288 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_ISOHDR); 1289 OWRITE(sc, OHCI_IRCMD(dmach), 1290 vtophys(sc->ir[dmach].top->db) | 1); 1291 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_DMA_RUN); 1292 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IR); 1293 } 1294 return err; 1295} 1296 1297static int 1298fwohci_tx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1299{ 1300 int err = 0; 1301 int idb, z, i, dmach = 0; 1302 u_int32_t off = NULL; 1303 struct fwohcidb_tr *db_tr; 1304 volatile struct fwohcidb *db; 1305 1306 if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){ 1307 err = EINVAL; 1308 return err; 1309 } 1310 z = dbch->ndesc; 1311 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1312 if( &sc->it[dmach] == dbch){ 1313 off = OHCI_ITOFF(dmach); 1314 break; 1315 } 1316 } 1317 if(off == NULL){ 1318 err = EINVAL; 1319 return err; 1320 } 1321 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1322 return err; 1323 dbch->xferq.flag |= FWXFERQ_RUNNING; 1324 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1325 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1326 } 1327 db_tr = dbch->top; 1328 for( idb = 0 ; idb < dbch->ndb ; idb ++){ 1329 fwohci_add_tx_buf(db_tr, 1330 dbch->xferq.psize, dbch->xferq.flag, 1331 dbch->xferq.buf + dbch->xferq.psize * idb); 1332 if(STAILQ_NEXT(db_tr, link) == NULL){ 1333 break; 1334 } 1335 db = db_tr->db; 1336 db[0].db.desc.depend = db[db_tr->dbcnt - 1].db.desc.depend 1337 = vtophys(STAILQ_NEXT(db_tr, link)->db) | z; 1338 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1339 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1340 db[db_tr->dbcnt - 1].db.desc.control 1341 |= OHCI_INTERRUPT_ALWAYS; 1342 /* OHCI 1.1 and above */ 1343 db[0].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 1344#if 0 1345 db[0].db.desc.depend &= ~0xf; 1346 db[db_tr->dbcnt - 1].db.desc.depend &= ~0xf; 1347#endif 1348 } 1349 } 1350 db_tr = STAILQ_NEXT(db_tr, link); 1351 } 1352 dbch->bottom->db[db_tr->dbcnt - 1].db.desc.depend &= 0xfffffff0; 1353 return err; 1354} 1355 1356static int 1357fwohci_rx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1358{ 1359 int err = 0; 1360 int idb, z, i, dmach = 0, ldesc; 1361 u_int32_t off = NULL; 1362 struct fwohcidb_tr *db_tr; 1363 volatile struct fwohcidb *db; 1364 1365 z = dbch->ndesc; 1366 if(&sc->arrq == dbch){ 1367 off = OHCI_ARQOFF; 1368 }else if(&sc->arrs == dbch){ 1369 off = OHCI_ARSOFF; 1370 }else{ 1371 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1372 if( &sc->ir[dmach] == dbch){ 1373 off = OHCI_IROFF(dmach); 1374 break; 1375 } 1376 } 1377 } 1378 if(off == NULL){ 1379 err = EINVAL; 1380 return err; 1381 } 1382 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1383 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1384 return err; 1385 }else{ 1386 if(dbch->xferq.flag & FWXFERQ_RUNNING){ 1387 err = EBUSY; 1388 return err; 1389 } 1390 } 1391 dbch->xferq.flag |= FWXFERQ_RUNNING; 1392 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1393 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1394 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1395 } 1396 db_tr = dbch->top; 1397 for( idb = 0 ; idb < dbch->ndb ; idb ++){ 1398 if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){ 1399 fwohci_add_rx_buf(db_tr, 1400 dbch->xferq.psize, dbch->xferq.flag, 0, NULL); 1401 }else{ 1402 fwohci_add_rx_buf(db_tr, 1403 dbch->xferq.psize, dbch->xferq.flag, 1404 dbch->xferq.buf + dbch->xferq.psize * idb, 1405 dbch->dummy + sizeof(u_int32_t) * idb); 1406 } 1407 if(STAILQ_NEXT(db_tr, link) == NULL){ 1408 break; 1409 } 1410 db = db_tr->db; 1411 ldesc = db_tr->dbcnt - 1; 1412 db[ldesc].db.desc.depend 1413 = vtophys(STAILQ_NEXT(db_tr, link)->db) | z; 1414 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1415 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1416 db[ldesc].db.desc.control 1417 |= OHCI_INTERRUPT_ALWAYS; 1418 db[ldesc].db.desc.depend &= ~0xf; 1419 } 1420 } 1421 db_tr = STAILQ_NEXT(db_tr, link); 1422 } 1423 dbch->bottom->db[db_tr->dbcnt - 1].db.desc.depend &= 0xfffffff0; 1424 dbch->buf_offset = 0; 1425 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1426 return err; 1427 }else{ 1428 OWRITE(sc, OHCI_DMACMD(off), vtophys(dbch->top->db) | z); 1429 } 1430 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 1431 return err; 1432} 1433 1434static int 1435fwochi_next_cycle(struct firewire_comm *fc, int cycle_now) 1436{ 1437 int sec, cycle, cycle_match; 1438 1439 cycle = cycle_now & 0x1fff; 1440 sec = cycle_now >> 13; 1441#define CYCLE_MOD 0x10 1442#define CYCLE_DELAY 8 /* min delay to start DMA */ 1443 cycle = cycle + CYCLE_DELAY; 1444 if (cycle >= 8000) { 1445 sec ++; 1446 cycle -= 8000; 1447 } 1448 cycle = ((cycle + CYCLE_MOD - 1) / CYCLE_MOD) * CYCLE_MOD; 1449 if (cycle >= 8000) { 1450 sec ++; 1451 if (cycle == 8000) 1452 cycle = 0; 1453 else 1454 cycle = CYCLE_MOD; 1455 } 1456 cycle_match = ((sec << 13) | cycle) & 0x7ffff; 1457 1458 return(cycle_match); 1459} 1460 1461static int 1462fwohci_itxbuf_enable(struct firewire_comm *fc, int dmach) 1463{ 1464 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1465 int err = 0; 1466 unsigned short tag, ich; 1467 struct fwohci_dbch *dbch; 1468 int cycle_match, cycle_now, s, ldesc; 1469 u_int32_t stat; 1470 struct fw_bulkxfer *first, *chunk, *prev; 1471 struct fw_xferq *it; 1472 1473 dbch = &sc->it[dmach]; 1474 it = &dbch->xferq; 1475 1476 tag = (it->flag >> 6) & 3; 1477 ich = it->flag & 0x3f; 1478 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) { 1479 dbch->ndb = it->bnpacket * it->bnchunk; 1480 dbch->ndesc = 3; 1481 fwohci_db_init(dbch); 1482 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1483 return ENOMEM; 1484 err = fwohci_tx_enable(sc, dbch); 1485 } 1486 if(err) 1487 return err; 1488 1489 ldesc = dbch->ndesc - 1; 1490 s = splfw(); 1491 prev = STAILQ_LAST(&it->stdma, fw_bulkxfer, link); 1492 while ((chunk = STAILQ_FIRST(&it->stvalid)) != NULL) { 1493 volatile struct fwohcidb *db; 1494 1495 fwohci_txbufdb(sc, dmach, chunk); 1496#if 0 1497 db = ((struct fwohcidb_tr *)(chunk->end))->db; 1498 db[ldesc].db.desc.status = db[0].db.desc.status = 0; 1499 db[ldesc].db.desc.count = db[0].db.desc.count = 0; 1500 db[ldesc].db.desc.depend &= ~0xf; 1501 db[0].db.desc.depend &= ~0xf; 1502#endif 1503 if (prev != NULL) { 1504 db = ((struct fwohcidb_tr *)(prev->end))->db; 1505 db[ldesc].db.desc.control |= OHCI_BRANCH_ALWAYS; 1506#if 0 /* if bulkxfer->npacket changes */ 1507 db[ldesc].db.desc.depend = db[0].db.desc.depend = 1508 vtophys(((struct fwohcidb_tr *) 1509 (chunk->start))->db) | dbch->ndesc; 1510#else 1511 db[0].db.desc.depend |= dbch->ndesc; 1512 db[ldesc].db.desc.depend |= dbch->ndesc; 1513#endif 1514 } 1515 STAILQ_REMOVE_HEAD(&it->stvalid, link); 1516 STAILQ_INSERT_TAIL(&it->stdma, chunk, link); 1517 prev = chunk; 1518 } 1519 splx(s); 1520 stat = OREAD(sc, OHCI_ITCTL(dmach)); 1521 if (stat & (OHCI_CNTL_DMA_ACTIVE | OHCI_CNTL_CYCMATCH_S)) 1522 return 0; 1523 1524 OWRITE(sc, OHCI_ITCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1525 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1526 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1527 OWRITE(sc, OHCI_IT_MASK, 1 << dmach); 1528 1529 first = STAILQ_FIRST(&it->stdma); 1530 OWRITE(sc, OHCI_ITCMD(dmach), vtophys(((struct fwohcidb_tr *) 1531 (first->start))->db) | dbch->ndesc); 1532 if (firewire_debug) 1533 printf("fwohci_itxbuf_enable: kick 0x%08x\n", stat); 1534 if ((stat & OHCI_CNTL_DMA_RUN) == 0) { 1535#if 1 1536 /* Don't start until all chunks are buffered */ 1537 if (STAILQ_FIRST(&it->stfree) != NULL) 1538 goto out; 1539#endif 1540#ifdef FWXFERQ_DV 1541#define CYCLE_OFFSET 1 1542 if(dbch->xferq.flag & FWXFERQ_DV){ 1543 struct fw_pkt *fp; 1544 struct fwohcidb_tr *db_tr; 1545 1546 db_tr = (struct fwohcidb_tr *)dbch->xferq.stdma->start; 1547 fp = (struct fw_pkt *)db_tr->buf; 1548 dbch->xferq.dvoffset = CYCLE_OFFSET; 1549 fp->mode.ld[2] |= htonl(dbch->xferq.dvoffset << 12); 1550 } 1551#endif 1552 /* Clear cycle match counter bits */ 1553 OWRITE(sc, OHCI_ITCTLCLR(dmach), 0xffff0000); 1554 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IT); 1555 1556 /* 2bit second + 13bit cycle */ 1557 cycle_now = (fc->cyctimer(fc) >> 12) & 0x7fff; 1558 cycle_match = fwochi_next_cycle(fc, cycle_now); 1559 1560 OWRITE(sc, OHCI_ITCTL(dmach), 1561 OHCI_CNTL_CYCMATCH_S | (cycle_match << 16) 1562 | OHCI_CNTL_DMA_RUN); 1563 if (firewire_debug) 1564 printf("cycle_match: 0x%04x->0x%04x\n", 1565 cycle_now, cycle_match); 1566 } else if ((stat & OHCI_CNTL_CYCMATCH_S) == 0) { 1567 device_printf(sc->fc.dev, 1568 "IT DMA underrun (0x%08x)\n", stat); 1569 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_RUN); 1570 } 1571out: 1572 return err; 1573} 1574 1575static int 1576fwohci_irxbuf_enable(struct firewire_comm *fc, int dmach) 1577{ 1578 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1579 int err = 0, s, ldesc; 1580 unsigned short tag, ich; 1581 u_int32_t stat; 1582 struct fwohci_dbch *dbch; 1583 struct fw_bulkxfer *first, *prev, *chunk; 1584 struct fw_xferq *ir; 1585 1586 dbch = &sc->ir[dmach]; 1587 ir = &dbch->xferq; 1588 ldesc = dbch->ndesc - 1; 1589 1590 if ((ir->flag & FWXFERQ_RUNNING) == 0) { 1591 tag = (ir->flag >> 6) & 3; 1592 ich = ir->flag & 0x3f; 1593 OWRITE(sc, OHCI_IRMATCH(dmach), tagbit[tag] | ich); 1594 1595 ir->queued = 0; 1596 dbch->ndb = ir->bnpacket * ir->bnchunk; 1597 dbch->dummy = malloc(sizeof(u_int32_t) * dbch->ndb, 1598 M_FW, 0); 1599 if (dbch->dummy == NULL) { 1600 err = ENOMEM; 1601 return err; 1602 } 1603 dbch->ndesc = 2; 1604 fwohci_db_init(dbch); 1605 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1606 return ENOMEM; 1607 err = fwohci_rx_enable(sc, dbch); 1608 } 1609 if(err) 1610 return err; 1611 1612 s = splfw(); 1613 1614 first = STAILQ_FIRST(&ir->stfree); 1615 if (first == NULL) { 1616 device_printf(fc->dev, "IR DMA no free chunk\n"); 1617 splx(s); 1618 return 0; 1619 } 1620 1621 prev = STAILQ_LAST(&ir->stdma, fw_bulkxfer, link); 1622 while ((chunk = STAILQ_FIRST(&ir->stfree)) != NULL) { 1623 volatile struct fwohcidb *db; 1624 1625 db = ((struct fwohcidb_tr *)(chunk->end))->db; 1626 db[ldesc].db.desc.status = db[ldesc].db.desc.count = 0; 1627 db[ldesc].db.desc.depend &= ~0xf; 1628 if (prev != NULL) { 1629 db = ((struct fwohcidb_tr *)(prev->end))->db; 1630#if 0 1631 db[ldesc].db.desc.depend = 1632 vtophys(((struct fwohcidb_tr *) 1633 (chunk->start))->db) | dbch->ndesc; 1634#else 1635 db[ldesc].db.desc.depend |= dbch->ndesc; 1636#endif 1637 } 1638 STAILQ_REMOVE_HEAD(&ir->stfree, link); 1639 STAILQ_INSERT_TAIL(&ir->stdma, chunk, link); 1640 prev = chunk; 1641 } 1642 splx(s); 1643 stat = OREAD(sc, OHCI_IRCTL(dmach)); 1644 if (stat & OHCI_CNTL_DMA_ACTIVE) 1645 return 0; 1646 if (stat & OHCI_CNTL_DMA_RUN) { 1647 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1648 device_printf(sc->fc.dev, "IR DMA overrun (0x%08x)\n", stat); 1649 } 1650 1651 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1652 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1653 OWRITE(sc, OHCI_IR_MASK, 1 << dmach); 1654 OWRITE(sc, OHCI_IRCTLCLR(dmach), 0xf0000000); 1655 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_ISOHDR); 1656 OWRITE(sc, OHCI_IRCMD(dmach), 1657 vtophys(((struct fwohcidb_tr *)(first->start))->db) 1658 | dbch->ndesc); 1659 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_DMA_RUN); 1660 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IR); 1661 return err; 1662} 1663 1664static int 1665fwohci_irx_enable(struct firewire_comm *fc, int dmach) 1666{ 1667 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1668 int err = 0; 1669 1670 if(sc->ir[dmach].xferq.flag & FWXFERQ_PACKET){ 1671 err = fwohci_irxpp_enable(fc, dmach); 1672 return err; 1673 }else{ 1674 err = fwohci_irxbuf_enable(fc, dmach); 1675 return err; 1676 } 1677} 1678 1679int 1680fwohci_stop(struct fwohci_softc *sc, device_t dev) 1681{ 1682 u_int i; 1683 1684/* Now stopping all DMA channel */ 1685 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 1686 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 1687 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1688 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1689 1690 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 1691 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 1692 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 1693 } 1694 1695/* FLUSH FIFO and reset Transmitter/Reciever */ 1696 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 1697 1698/* Stop interrupt */ 1699 OWRITE(sc, FWOHCI_INTMASKCLR, 1700 OHCI_INT_EN | OHCI_INT_ERR | OHCI_INT_PHY_SID 1701 | OHCI_INT_PHY_INT 1702 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 1703 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 1704 | OHCI_INT_DMA_ARRQ | OHCI_INT_DMA_ARRS 1705 | OHCI_INT_PHY_BUS_R); 1706/* XXX Link down? Bus reset? */ 1707 return 0; 1708} 1709 1710int 1711fwohci_resume(struct fwohci_softc *sc, device_t dev) 1712{ 1713 int i; 1714 1715 fwohci_reset(sc, dev); 1716 /* XXX resume isochronus receive automatically. (how about TX?) */ 1717 for(i = 0; i < sc->fc.nisodma; i ++) { 1718 if((sc->ir[i].xferq.flag & FWXFERQ_RUNNING) != 0) { 1719 device_printf(sc->fc.dev, 1720 "resume iso receive ch: %d\n", i); 1721 sc->ir[i].xferq.flag &= ~FWXFERQ_RUNNING; 1722 sc->fc.irx_enable(&sc->fc, i); 1723 } 1724 } 1725 1726 bus_generic_resume(dev); 1727 sc->fc.ibr(&sc->fc); 1728 return 0; 1729} 1730 1731#define ACK_ALL 1732static void 1733fwohci_intr_body(struct fwohci_softc *sc, u_int32_t stat, int count) 1734{ 1735 u_int32_t irstat, itstat; 1736 u_int i; 1737 struct firewire_comm *fc = (struct firewire_comm *)sc; 1738 1739#ifdef OHCI_DEBUG 1740 if(stat & OREAD(sc, FWOHCI_INTMASK)) 1741 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", 1742 stat & OHCI_INT_EN ? "DMA_EN ":"", 1743 stat & OHCI_INT_PHY_REG ? "PHY_REG ":"", 1744 stat & OHCI_INT_CYC_LONG ? "CYC_LONG ":"", 1745 stat & OHCI_INT_ERR ? "INT_ERR ":"", 1746 stat & OHCI_INT_CYC_ERR ? "CYC_ERR ":"", 1747 stat & OHCI_INT_CYC_LOST ? "CYC_LOST ":"", 1748 stat & OHCI_INT_CYC_64SECOND ? "CYC_64SECOND ":"", 1749 stat & OHCI_INT_CYC_START ? "CYC_START ":"", 1750 stat & OHCI_INT_PHY_INT ? "PHY_INT ":"", 1751 stat & OHCI_INT_PHY_BUS_R ? "BUS_RESET ":"", 1752 stat & OHCI_INT_PHY_SID ? "SID ":"", 1753 stat & OHCI_INT_LR_ERR ? "DMA_LR_ERR ":"", 1754 stat & OHCI_INT_PW_ERR ? "DMA_PW_ERR ":"", 1755 stat & OHCI_INT_DMA_IR ? "DMA_IR ":"", 1756 stat & OHCI_INT_DMA_IT ? "DMA_IT " :"", 1757 stat & OHCI_INT_DMA_PRRS ? "DMA_PRRS " :"", 1758 stat & OHCI_INT_DMA_PRRQ ? "DMA_PRRQ " :"", 1759 stat & OHCI_INT_DMA_ARRS ? "DMA_ARRS " :"", 1760 stat & OHCI_INT_DMA_ARRQ ? "DMA_ARRQ " :"", 1761 stat & OHCI_INT_DMA_ATRS ? "DMA_ATRS " :"", 1762 stat & OHCI_INT_DMA_ATRQ ? "DMA_ATRQ " :"", 1763 stat, OREAD(sc, FWOHCI_INTMASK) 1764 ); 1765#endif 1766/* Bus reset */ 1767 if(stat & OHCI_INT_PHY_BUS_R ){ 1768 if (fc->status == FWBUSRESET) 1769 goto busresetout; 1770 /* Disable bus reset interrupt until sid recv. */ 1771 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_BUS_R); 1772 1773 device_printf(fc->dev, "BUS reset\n"); 1774 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_CYC_LOST); 1775 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCSRC); 1776 1777 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1778 sc->atrq.xferq.flag &= ~FWXFERQ_RUNNING; 1779 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1780 sc->atrs.xferq.flag &= ~FWXFERQ_RUNNING; 1781 1782#ifndef ACK_ALL 1783 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_BUS_R); 1784#endif 1785 fw_busreset(fc); 1786 1787 OWRITE(sc, OHCI_AREQHI, 1 << 31); 1788 /* XXX insecure ?? */ 1789 OWRITE(sc, OHCI_PREQHI, 0x7fffffff); 1790 OWRITE(sc, OHCI_PREQLO, 0xffffffff); 1791 OWRITE(sc, OHCI_PREQUPPER, 0x10000); 1792 1793 } 1794busresetout: 1795 if((stat & OHCI_INT_DMA_IR )){ 1796#ifndef ACK_ALL 1797 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IR); 1798#endif 1799 irstat = OREAD(sc, OHCI_IR_STAT); 1800 OWRITE(sc, OHCI_IR_STATCLR, irstat); 1801 for(i = 0; i < fc->nisodma ; i++){ 1802 struct fwohci_dbch *dbch; 1803 1804 if((irstat & (1 << i)) != 0){ 1805 dbch = &sc->ir[i]; 1806 if ((dbch->xferq.flag & FWXFERQ_OPEN) == 0) { 1807 device_printf(sc->fc.dev, 1808 "dma(%d) not active\n", i); 1809 continue; 1810 } 1811 if (dbch->xferq.flag & FWXFERQ_PACKET) { 1812 fwohci_ircv(sc, dbch, count); 1813 } else { 1814 fwohci_rbuf_update(sc, i); 1815 } 1816 } 1817 } 1818 } 1819 if((stat & OHCI_INT_DMA_IT )){ 1820#ifndef ACK_ALL 1821 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IT); 1822#endif 1823 itstat = OREAD(sc, OHCI_IT_STAT); 1824 OWRITE(sc, OHCI_IT_STATCLR, itstat); 1825 for(i = 0; i < fc->nisodma ; i++){ 1826 if((itstat & (1 << i)) != 0){ 1827 fwohci_tbuf_update(sc, i); 1828 } 1829 } 1830 } 1831 if((stat & OHCI_INT_DMA_PRRS )){ 1832#ifndef ACK_ALL 1833 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRS); 1834#endif 1835#if 0 1836 dump_dma(sc, ARRS_CH); 1837 dump_db(sc, ARRS_CH); 1838#endif 1839 fwohci_arcv(sc, &sc->arrs, count); 1840 } 1841 if((stat & OHCI_INT_DMA_PRRQ )){ 1842#ifndef ACK_ALL 1843 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRQ); 1844#endif 1845#if 0 1846 dump_dma(sc, ARRQ_CH); 1847 dump_db(sc, ARRQ_CH); 1848#endif 1849 fwohci_arcv(sc, &sc->arrq, count); 1850 } 1851 if(stat & OHCI_INT_PHY_SID){ 1852 caddr_t buf; 1853 int plen; 1854 1855#ifndef ACK_ALL 1856 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_SID); 1857#endif 1858 /* Enable bus reset interrupt */ 1859 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_PHY_BUS_R); 1860/* 1861** Checking whether the node is root or not. If root, turn on 1862** cycle master. 1863*/ 1864 device_printf(fc->dev, "node_id = 0x%08x, ", OREAD(sc, FWOHCI_NODEID)); 1865 if(!(OREAD(sc, FWOHCI_NODEID) & OHCI_NODE_VALID)){ 1866 printf("Bus reset failure\n"); 1867 goto sidout; 1868 } 1869 if( OREAD(sc, FWOHCI_NODEID) & OHCI_NODE_ROOT ){ 1870 printf("CYCLEMASTER mode\n"); 1871 OWRITE(sc, OHCI_LNKCTL, 1872 OHCI_CNTL_CYCMTR | OHCI_CNTL_CYCTIMER); 1873 }else{ 1874 printf("non CYCLEMASTER mode\n"); 1875 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCMTR); 1876 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_CYCTIMER); 1877 } 1878 fc->nodeid = OREAD(sc, FWOHCI_NODEID) & 0x3f; 1879 1880 plen = OREAD(sc, OHCI_SID_CNT) & OHCI_SID_CNT_MASK; 1881 if (plen < 4 || plen > OHCI_SIDSIZE) { 1882 device_printf(fc->dev, "invalid SID len = %d\n", plen); 1883 goto sidout; 1884 } 1885 plen -= 4; /* chop control info */ 1886 buf = malloc(OHCI_SIDSIZE, M_FW, M_NOWAIT); 1887 if(buf == NULL) goto sidout; 1888 bcopy((void *)(uintptr_t)(volatile void *)(fc->sid_buf + 1), 1889 buf, plen); 1890#if 1 1891 /* pending all pre-bus_reset packets */ 1892 fwohci_txd(sc, &sc->atrq); 1893 fwohci_txd(sc, &sc->atrs); 1894 fwohci_arcv(sc, &sc->arrs, -1); 1895 fwohci_arcv(sc, &sc->arrq, -1); 1896 fw_drain_txq(fc); 1897#endif 1898 fw_sidrcv(fc, buf, plen, 0); 1899 } 1900sidout: 1901 if((stat & OHCI_INT_DMA_ATRQ )){ 1902#ifndef ACK_ALL 1903 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRQ); 1904#endif 1905 fwohci_txd(sc, &(sc->atrq)); 1906 } 1907 if((stat & OHCI_INT_DMA_ATRS )){ 1908#ifndef ACK_ALL 1909 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRS); 1910#endif 1911 fwohci_txd(sc, &(sc->atrs)); 1912 } 1913 if((stat & OHCI_INT_PW_ERR )){ 1914#ifndef ACK_ALL 1915 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PW_ERR); 1916#endif 1917 device_printf(fc->dev, "posted write error\n"); 1918 } 1919 if((stat & OHCI_INT_ERR )){ 1920#ifndef ACK_ALL 1921 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_ERR); 1922#endif 1923 device_printf(fc->dev, "unrecoverable error\n"); 1924 } 1925 if((stat & OHCI_INT_PHY_INT)) { 1926#ifndef ACK_ALL 1927 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_INT); 1928#endif 1929 device_printf(fc->dev, "phy int\n"); 1930 } 1931 1932 return; 1933} 1934 1935void 1936fwohci_intr(void *arg) 1937{ 1938 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 1939 u_int32_t stat, bus_reset = 0; 1940 1941 if (!(sc->intmask & OHCI_INT_EN)) { 1942 /* polling mode */ 1943 return; 1944 } 1945 1946 while ((stat = OREAD(sc, FWOHCI_INTSTAT)) != 0) { 1947 if (stat == 0xffffffff) { 1948 device_printf(sc->fc.dev, 1949 "device physically ejected?\n"); 1950 return; 1951 } 1952#ifdef ACK_ALL 1953 OWRITE(sc, FWOHCI_INTSTATCLR, stat); 1954#endif 1955 /* We cannot clear bus reset event during bus reset phase */ 1956 if ((stat & ~bus_reset) == 0) 1957 return; 1958 bus_reset = stat & OHCI_INT_PHY_BUS_R; 1959 fwohci_intr_body(sc, stat, -1); 1960 } 1961} 1962 1963static void 1964fwohci_poll(struct firewire_comm *fc, int quick, int count) 1965{ 1966 int s; 1967 u_int32_t stat; 1968 struct fwohci_softc *sc; 1969 1970 1971 sc = (struct fwohci_softc *)fc; 1972 stat = OHCI_INT_DMA_IR | OHCI_INT_DMA_IT | 1973 OHCI_INT_DMA_PRRS | OHCI_INT_DMA_PRRQ | 1974 OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS; 1975#if 0 1976 if (!quick) { 1977#else 1978 if (1) { 1979#endif 1980 stat = OREAD(sc, FWOHCI_INTSTAT); 1981 if (stat == 0) 1982 return; 1983 if (stat == 0xffffffff) { 1984 device_printf(sc->fc.dev, 1985 "device physically ejected?\n"); 1986 return; 1987 } 1988#ifdef ACK_ALL 1989 OWRITE(sc, FWOHCI_INTSTATCLR, stat); 1990#endif 1991 } 1992 s = splfw(); 1993 fwohci_intr_body(sc, stat, count); 1994 splx(s); 1995} 1996 1997static void 1998fwohci_set_intr(struct firewire_comm *fc, int enable) 1999{ 2000 struct fwohci_softc *sc; 2001 2002 sc = (struct fwohci_softc *)fc; 2003 if (bootverbose) 2004 device_printf(sc->fc.dev, "fwohci_set_intr: %d\n", enable); 2005 if (enable) { 2006 sc->intmask |= OHCI_INT_EN; 2007 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_EN); 2008 } else { 2009 sc->intmask &= ~OHCI_INT_EN; 2010 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_EN); 2011 } 2012} 2013 2014static void 2015fwohci_tbuf_update(struct fwohci_softc *sc, int dmach) 2016{ 2017 struct firewire_comm *fc = &sc->fc; 2018 volatile struct fwohcidb *db; 2019 struct fw_bulkxfer *chunk; 2020 struct fw_xferq *it; 2021 u_int32_t stat, count; 2022 int s, w=0; 2023 2024 it = fc->it[dmach]; 2025 s = splfw(); /* unnecessary ? */ 2026 while ((chunk = STAILQ_FIRST(&it->stdma)) != NULL) { 2027 db = ((struct fwohcidb_tr *)(chunk->end))->db; 2028 stat = db[sc->it[dmach].ndesc - 1].db.desc.status; 2029 db = ((struct fwohcidb_tr *)(chunk->start))->db; 2030 count = db[sc->it[dmach].ndesc - 1].db.desc.count; 2031 if (stat == 0) 2032 break; 2033 STAILQ_REMOVE_HEAD(&it->stdma, link); 2034 switch (stat & FWOHCIEV_MASK){ 2035 case FWOHCIEV_ACKCOMPL: 2036#if 0 2037 device_printf(fc->dev, "0x%08x\n", count); 2038#endif 2039 break; 2040 default: 2041 device_printf(fc->dev, 2042 "Isochronous transmit err %02x\n", stat); 2043 } 2044 STAILQ_INSERT_TAIL(&it->stfree, chunk, link); 2045 w++; 2046 } 2047 splx(s); 2048 if (w) 2049 wakeup(it); 2050} 2051 2052static void 2053fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) 2054{ 2055 struct firewire_comm *fc = &sc->fc; 2056 volatile struct fwohcidb *db; 2057 struct fw_bulkxfer *chunk; 2058 struct fw_xferq *ir; 2059 u_int32_t stat; 2060 int s, w=0; 2061 2062 ir = fc->ir[dmach]; 2063 s = splfw(); 2064 while ((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 2065 db = ((struct fwohcidb_tr *)(chunk->end))->db; 2066 stat = db[sc->ir[dmach].ndesc - 1].db.desc.status; 2067 if (stat == 0) 2068 break; 2069 STAILQ_REMOVE_HEAD(&ir->stdma, link); 2070 STAILQ_INSERT_TAIL(&ir->stvalid, chunk, link); 2071 switch (stat & FWOHCIEV_MASK) { 2072 case FWOHCIEV_ACKCOMPL: 2073 break; 2074 default: 2075 device_printf(fc->dev, 2076 "Isochronous receive err %02x\n", stat); 2077 } 2078 w++; 2079 } 2080 splx(s); 2081 if (w) 2082 wakeup(ir); 2083} 2084 2085void 2086dump_dma(struct fwohci_softc *sc, u_int32_t ch) 2087{ 2088 u_int32_t off, cntl, stat, cmd, match; 2089 2090 if(ch == 0){ 2091 off = OHCI_ATQOFF; 2092 }else if(ch == 1){ 2093 off = OHCI_ATSOFF; 2094 }else if(ch == 2){ 2095 off = OHCI_ARQOFF; 2096 }else if(ch == 3){ 2097 off = OHCI_ARSOFF; 2098 }else if(ch < IRX_CH){ 2099 off = OHCI_ITCTL(ch - ITX_CH); 2100 }else{ 2101 off = OHCI_IRCTL(ch - IRX_CH); 2102 } 2103 cntl = stat = OREAD(sc, off); 2104 cmd = OREAD(sc, off + 0xc); 2105 match = OREAD(sc, off + 0x10); 2106 2107 device_printf(sc->fc.dev, "dma ch %1x:dma regs 0x%08x 0x%08x 0x%08x 0x%08x \n", 2108 ch, 2109 cntl, 2110 stat, 2111 cmd, 2112 match); 2113 stat &= 0xffff ; 2114 if(stat & 0xff00){ 2115 device_printf(sc->fc.dev, "dma %d ch:%s%s%s%s%s%s %s(%x)\n", 2116 ch, 2117 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2118 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2119 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2120 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2121 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2122 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2123 fwohcicode[stat & 0x1f], 2124 stat & 0x1f 2125 ); 2126 }else{ 2127 device_printf(sc->fc.dev, "dma %d ch: Nostat\n", ch); 2128 } 2129} 2130 2131void 2132dump_db(struct fwohci_softc *sc, u_int32_t ch) 2133{ 2134 struct fwohci_dbch *dbch; 2135 struct fwohcidb_tr *cp = NULL, *pp, *np; 2136 volatile struct fwohcidb *curr = NULL, *prev, *next = NULL; 2137 int idb, jdb; 2138 u_int32_t cmd, off; 2139 if(ch == 0){ 2140 off = OHCI_ATQOFF; 2141 dbch = &sc->atrq; 2142 }else if(ch == 1){ 2143 off = OHCI_ATSOFF; 2144 dbch = &sc->atrs; 2145 }else if(ch == 2){ 2146 off = OHCI_ARQOFF; 2147 dbch = &sc->arrq; 2148 }else if(ch == 3){ 2149 off = OHCI_ARSOFF; 2150 dbch = &sc->arrs; 2151 }else if(ch < IRX_CH){ 2152 off = OHCI_ITCTL(ch - ITX_CH); 2153 dbch = &sc->it[ch - ITX_CH]; 2154 }else { 2155 off = OHCI_IRCTL(ch - IRX_CH); 2156 dbch = &sc->ir[ch - IRX_CH]; 2157 } 2158 cmd = OREAD(sc, off + 0xc); 2159 2160 if( dbch->ndb == 0 ){ 2161 device_printf(sc->fc.dev, "No DB is attached ch=%d\n", ch); 2162 return; 2163 } 2164 pp = dbch->top; 2165 prev = pp->db; 2166 for(idb = 0 ; idb < dbch->ndb ; idb ++ ){ 2167 if(pp == NULL){ 2168 curr = NULL; 2169 goto outdb; 2170 } 2171 cp = STAILQ_NEXT(pp, link); 2172 if(cp == NULL){ 2173 curr = NULL; 2174 goto outdb; 2175 } 2176 np = STAILQ_NEXT(cp, link); 2177 if(cp == NULL) break; 2178 for(jdb = 0 ; jdb < dbch->ndesc ; jdb ++ ){ 2179 if((cmd & 0xfffffff0) 2180 == vtophys(&(cp->db[jdb]))){ 2181 curr = cp->db; 2182 if(np != NULL){ 2183 next = np->db; 2184 }else{ 2185 next = NULL; 2186 } 2187 goto outdb; 2188 } 2189 } 2190 pp = STAILQ_NEXT(pp, link); 2191 prev = pp->db; 2192 } 2193outdb: 2194 if( curr != NULL){ 2195 printf("Prev DB %d\n", ch); 2196 print_db(prev, ch, dbch->ndesc); 2197 printf("Current DB %d\n", ch); 2198 print_db(curr, ch, dbch->ndesc); 2199 printf("Next DB %d\n", ch); 2200 print_db(next, ch, dbch->ndesc); 2201 }else{ 2202 printf("dbdump err ch = %d cmd = 0x%08x\n", ch, cmd); 2203 } 2204 return; 2205} 2206 2207void 2208print_db(volatile struct fwohcidb *db, u_int32_t ch, u_int32_t max) 2209{ 2210 fwohcireg_t stat; 2211 int i, key; 2212 2213 if(db == NULL){ 2214 printf("No Descriptor is found\n"); 2215 return; 2216 } 2217 2218 printf("ch = %d\n%8s %s %s %s %s %4s %8s %8s %4s:%4s\n", 2219 ch, 2220 "Current", 2221 "OP ", 2222 "KEY", 2223 "INT", 2224 "BR ", 2225 "len", 2226 "Addr", 2227 "Depend", 2228 "Stat", 2229 "Cnt"); 2230 for( i = 0 ; i <= max ; i ++){ 2231 key = db[i].db.desc.control & OHCI_KEY_MASK; 2232#if __FreeBSD_version >= 500000 2233 printf("%08tx %s %s %s %s %5d %08x %08x %04x:%04x", 2234#else 2235 printf("%08x %s %s %s %s %5d %08x %08x %04x:%04x", 2236#endif 2237 vtophys(&db[i]), 2238 dbcode[(db[i].db.desc.control >> 12) & 0xf], 2239 dbkey[(db[i].db.desc.control >> 8) & 0x7], 2240 dbcond[(db[i].db.desc.control >> 4) & 0x3], 2241 dbcond[(db[i].db.desc.control >> 2) & 0x3], 2242 db[i].db.desc.reqcount, 2243 db[i].db.desc.addr, 2244 db[i].db.desc.depend, 2245 db[i].db.desc.status, 2246 db[i].db.desc.count); 2247 stat = db[i].db.desc.status; 2248 if(stat & 0xff00){ 2249 printf(" %s%s%s%s%s%s %s(%x)\n", 2250 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2251 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2252 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2253 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2254 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2255 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2256 fwohcicode[stat & 0x1f], 2257 stat & 0x1f 2258 ); 2259 }else{ 2260 printf(" Nostat\n"); 2261 } 2262 if(key == OHCI_KEY_ST2 ){ 2263 printf("0x%08x 0x%08x 0x%08x 0x%08x\n", 2264 db[i+1].db.immed[0], 2265 db[i+1].db.immed[1], 2266 db[i+1].db.immed[2], 2267 db[i+1].db.immed[3]); 2268 } 2269 if(key == OHCI_KEY_DEVICE){ 2270 return; 2271 } 2272 if((db[i].db.desc.control & OHCI_BRANCH_MASK) 2273 == OHCI_BRANCH_ALWAYS){ 2274 return; 2275 } 2276 if((db[i].db.desc.control & OHCI_CMD_MASK) 2277 == OHCI_OUTPUT_LAST){ 2278 return; 2279 } 2280 if((db[i].db.desc.control & OHCI_CMD_MASK) 2281 == OHCI_INPUT_LAST){ 2282 return; 2283 } 2284 if(key == OHCI_KEY_ST2 ){ 2285 i++; 2286 } 2287 } 2288 return; 2289} 2290 2291void 2292fwohci_ibr(struct firewire_comm *fc) 2293{ 2294 struct fwohci_softc *sc; 2295 u_int32_t fun; 2296 2297 device_printf(fc->dev, "Initiate bus reset\n"); 2298 sc = (struct fwohci_softc *)fc; 2299 2300 /* 2301 * Set root hold-off bit so that non cyclemaster capable node 2302 * shouldn't became the root node. 2303 */ 2304#if 1 2305 fun = fwphy_rddata(sc, FW_PHY_IBR_REG); 2306 fun |= FW_PHY_IBR | FW_PHY_RHB; 2307 fun = fwphy_wrdata(sc, FW_PHY_IBR_REG, fun); 2308#else /* Short bus reset */ 2309 fun = fwphy_rddata(sc, FW_PHY_ISBR_REG); 2310 fun |= FW_PHY_ISBR | FW_PHY_RHB; 2311 fun = fwphy_wrdata(sc, FW_PHY_ISBR_REG, fun); 2312#endif 2313} 2314 2315void 2316fwohci_txbufdb(struct fwohci_softc *sc, int dmach, struct fw_bulkxfer *bulkxfer) 2317{ 2318 struct fwohcidb_tr *db_tr, *fdb_tr; 2319 struct fwohci_dbch *dbch; 2320 volatile struct fwohcidb *db; 2321 struct fw_pkt *fp; 2322 volatile struct fwohci_txpkthdr *ohcifp; 2323 unsigned short chtag; 2324 int idb; 2325 2326 dbch = &sc->it[dmach]; 2327 chtag = sc->it[dmach].xferq.flag & 0xff; 2328 2329 db_tr = (struct fwohcidb_tr *)(bulkxfer->start); 2330 fdb_tr = (struct fwohcidb_tr *)(bulkxfer->end); 2331/* 2332device_printf(sc->fc.dev, "DB %08x %08x %08x\n", bulkxfer, vtophys(db_tr->db), vtophys(fdb_tr->db)); 2333*/ 2334 for( idb = 0 ; idb < bulkxfer->npacket ; idb ++){ 2335 db = db_tr->db; 2336#if 0 2337 db[0].db.desc.control 2338 = OHCI_OUTPUT_MORE | OHCI_KEY_ST2; 2339 db[0].db.desc.reqcount = 8; 2340#endif 2341 fp = (struct fw_pkt *)db_tr->buf; 2342 ohcifp = (volatile struct fwohci_txpkthdr *) db[1].db.immed; 2343 ohcifp->mode.ld[0] = ntohl(fp->mode.ld[0]); 2344 ohcifp->mode.stream.len = ntohs(fp->mode.stream.len); 2345 ohcifp->mode.stream.chtag = chtag; 2346 ohcifp->mode.stream.tcode = 0xa; 2347 ohcifp->mode.stream.spd = 0; 2348 2349 db[2].db.desc.reqcount = ntohs(fp->mode.stream.len); 2350 db[2].db.desc.status = 0; 2351 db[2].db.desc.count = 0; 2352#if 0 /* if bulkxfer->npackets changes */ 2353 db[2].db.desc.control = OHCI_OUTPUT_LAST 2354 | OHCI_UPDATE 2355 | OHCI_BRANCH_ALWAYS; 2356 db[0].db.desc.depend = 2357 = db[dbch->ndesc - 1].db.desc.depend 2358 = vtophys(STAILQ_NEXT(db_tr, link)->db) | dbch->ndesc; 2359#else 2360 db[0].db.desc.depend |= dbch->ndesc; 2361 db[dbch->ndesc - 1].db.desc.depend |= dbch->ndesc; 2362#endif 2363 bulkxfer->end = (caddr_t)db_tr; 2364 db_tr = STAILQ_NEXT(db_tr, link); 2365 } 2366 db = ((struct fwohcidb_tr *)bulkxfer->end)->db; 2367 db[0].db.desc.depend &= ~0xf; 2368 db[dbch->ndesc - 1].db.desc.depend &= ~0xf; 2369#if 0 /* if bulkxfer->npackets changes */ 2370 db[dbch->ndesc - 1].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2371 /* OHCI 1.1 and above */ 2372 db[0].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2373#endif 2374/* 2375 db_tr = (struct fwohcidb_tr *)bulkxfer->start; 2376 fdb_tr = (struct fwohcidb_tr *)bulkxfer->end; 2377device_printf(sc->fc.dev, "DB %08x %3d %08x %08x\n", bulkxfer, bulkxfer->npacket, vtophys(db_tr->db), vtophys(fdb_tr->db)); 2378*/ 2379 return; 2380} 2381 2382static int 2383fwohci_add_tx_buf(struct fwohcidb_tr *db_tr, unsigned short size, 2384 int mode, void *buf) 2385{ 2386 volatile struct fwohcidb *db = db_tr->db; 2387 int err = 0; 2388 if(buf == 0){ 2389 err = EINVAL; 2390 return err; 2391 } 2392 db_tr->buf = buf; 2393 db_tr->dbcnt = 3; 2394 db_tr->dummy = NULL; 2395 2396 db[0].db.desc.control = OHCI_OUTPUT_MORE | OHCI_KEY_ST2; 2397 db[0].db.desc.reqcount = 8; 2398 db[2].db.desc.addr = vtophys(buf) + sizeof(u_int32_t); 2399 db[2].db.desc.control = 2400 OHCI_OUTPUT_LAST | OHCI_UPDATE | OHCI_BRANCH_ALWAYS; 2401#if 1 2402 db[0].db.desc.status = 0; 2403 db[0].db.desc.count = 0; 2404 db[2].db.desc.status = 0; 2405 db[2].db.desc.count = 0; 2406#endif 2407 if( mode & FWXFERQ_STREAM ){ 2408 if(mode & FWXFERQ_PACKET ){ 2409 db[2].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2410 } 2411 } else { 2412 printf("fwohci_add_tx_buf: who calls me?"); 2413 } 2414 return 1; 2415} 2416 2417int 2418fwohci_add_rx_buf(struct fwohcidb_tr *db_tr, unsigned short size, int mode, 2419 void *buf, void *dummy) 2420{ 2421 volatile struct fwohcidb *db = db_tr->db; 2422 int i; 2423 void *dbuf[2]; 2424 int dsiz[2]; 2425 2426 if(buf == 0){ 2427 buf = malloc(size, M_FW, M_NOWAIT); 2428 if(buf == NULL) return 0; 2429 db_tr->buf = buf; 2430 db_tr->dbcnt = 1; 2431 db_tr->dummy = NULL; 2432 dsiz[0] = size; 2433 dbuf[0] = buf; 2434 }else if(dummy == NULL){ 2435 db_tr->buf = buf; 2436 db_tr->dbcnt = 1; 2437 db_tr->dummy = NULL; 2438 dsiz[0] = size; 2439 dbuf[0] = buf; 2440 }else{ 2441 db_tr->buf = buf; 2442 db_tr->dbcnt = 2; 2443 db_tr->dummy = dummy; 2444 dsiz[0] = sizeof(u_int32_t); 2445 dsiz[1] = size; 2446 dbuf[0] = dummy; 2447 dbuf[1] = buf; 2448 } 2449 for(i = 0 ; i < db_tr->dbcnt ; i++){ 2450 db[i].db.desc.addr = vtophys(dbuf[i]) ; 2451 db[i].db.desc.control = OHCI_INPUT_MORE; 2452 db[i].db.desc.reqcount = dsiz[i]; 2453 if( mode & FWXFERQ_STREAM ){ 2454 db[i].db.desc.control |= OHCI_UPDATE; 2455 } 2456 db[i].db.desc.status = 0; 2457 db[i].db.desc.count = dsiz[i]; 2458 } 2459 if( mode & FWXFERQ_STREAM ){ 2460 db[db_tr->dbcnt - 1].db.desc.control |= OHCI_INPUT_LAST; 2461 if(mode & FWXFERQ_PACKET ){ 2462 db[db_tr->dbcnt - 1].db.desc.control 2463 |= OHCI_INTERRUPT_ALWAYS; 2464 } 2465 } 2466 db[db_tr->dbcnt - 1].db.desc.control |= OHCI_BRANCH_ALWAYS; 2467 return 1; 2468} 2469 2470static void 2471fwohci_ircv(struct fwohci_softc *sc, struct fwohci_dbch *dbch, int count) 2472{ 2473 struct fwohcidb_tr *db_tr = dbch->top, *odb_tr; 2474 struct firewire_comm *fc = (struct firewire_comm *)sc; 2475 int z = 1; 2476 struct fw_pkt *fp; 2477 u_int8_t *ld; 2478 u_int32_t off = NULL; 2479 u_int32_t stat; 2480 u_int32_t *qld; 2481 u_int32_t reg; 2482 u_int spd; 2483 u_int dmach; 2484 int len, i, plen; 2485 caddr_t buf; 2486 2487 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 2488 if( &sc->ir[dmach] == dbch){ 2489 off = OHCI_IROFF(dmach); 2490 break; 2491 } 2492 } 2493 if(off == NULL){ 2494 return; 2495 } 2496 if(!(dbch->xferq.flag & FWXFERQ_RUNNING)){ 2497 fwohci_irx_disable(&sc->fc, dmach); 2498 return; 2499 } 2500 2501 odb_tr = NULL; 2502 db_tr = dbch->top; 2503 i = 0; 2504 while ((reg = db_tr->db[0].db.desc.status) & 0x1f) { 2505 if (count >= 0 && count-- == 0) 2506 break; 2507 ld = (u_int8_t *)db_tr->buf; 2508 if (dbch->xferq.flag & FWXFERQ_PACKET) { 2509 /* skip timeStamp */ 2510 ld += sizeof(struct fwohci_trailer); 2511 } 2512 qld = (u_int32_t *)ld; 2513 len = dbch->xferq.psize - (db_tr->db[0].db.desc.count); 2514/* 2515{ 2516device_printf(sc->fc.dev, "%04x %2x 0x%08x 0x%08x 0x%08x 0x%08x\n", len, 2517 db_tr->db[0].db.desc.status & 0x1f, qld[0],qld[1],qld[2],qld[3]); 2518} 2519*/ 2520 fp=(struct fw_pkt *)ld; 2521 qld[0] = htonl(qld[0]); 2522 plen = sizeof(struct fw_isohdr) 2523 + ntohs(fp->mode.stream.len) + sizeof(u_int32_t); 2524 ld += plen; 2525 len -= plen; 2526 buf = db_tr->buf; 2527 db_tr->buf = NULL; 2528 stat = reg & 0x1f; 2529 spd = reg & 0x3; 2530 switch(stat){ 2531 case FWOHCIEV_ACKCOMPL: 2532 case FWOHCIEV_ACKPEND: 2533 fw_rcv(&sc->fc, buf, plen - sizeof(u_int32_t), dmach, sizeof(u_int32_t), spd); 2534 break; 2535 default: 2536 free(buf, M_FW); 2537 device_printf(sc->fc.dev, "Isochronous receive err %02x\n", stat); 2538 break; 2539 } 2540 i++; 2541 fwohci_add_rx_buf(db_tr, dbch->xferq.psize, 2542 dbch->xferq.flag, 0, NULL); 2543 db_tr->db[0].db.desc.depend &= ~0xf; 2544 if(dbch->pdb_tr != NULL){ 2545 dbch->pdb_tr->db[0].db.desc.depend |= z; 2546 } else { 2547 /* XXX should be rewritten in better way */ 2548 dbch->bottom->db[0].db.desc.depend |= z; 2549 } 2550 dbch->pdb_tr = db_tr; 2551 db_tr = STAILQ_NEXT(db_tr, link); 2552 } 2553 dbch->top = db_tr; 2554 reg = OREAD(sc, OHCI_DMACTL(off)); 2555 if (reg & OHCI_CNTL_DMA_ACTIVE) 2556 return; 2557 device_printf(sc->fc.dev, "IR DMA %d stopped at %x status=%x (%d)\n", 2558 dmach, OREAD(sc, OHCI_DMACMD(off)), reg, i); 2559 dbch->top = db_tr; 2560 fwohci_irx_enable(fc, dmach); 2561} 2562 2563#define PLEN(x) roundup2(ntohs(x), sizeof(u_int32_t)) 2564static int 2565fwohci_get_plen(struct fwohci_softc *sc, struct fwohci_dbch *dbch, struct fw_pkt *fp, int hlen) 2566{ 2567 int i, r; 2568 2569 for( i = 4; i < hlen ; i+=4){ 2570 fp->mode.ld[i/4] = htonl(fp->mode.ld[i/4]); 2571 } 2572 2573 switch(fp->mode.common.tcode){ 2574 case FWTCODE_RREQQ: 2575 r = sizeof(fp->mode.rreqq) + sizeof(u_int32_t); 2576 break; 2577 case FWTCODE_WRES: 2578 r = sizeof(fp->mode.wres) + sizeof(u_int32_t); 2579 break; 2580 case FWTCODE_WREQQ: 2581 r = sizeof(fp->mode.wreqq) + sizeof(u_int32_t); 2582 break; 2583 case FWTCODE_RREQB: 2584 r = sizeof(fp->mode.rreqb) + sizeof(u_int32_t); 2585 break; 2586 case FWTCODE_RRESQ: 2587 r = sizeof(fp->mode.rresq) + sizeof(u_int32_t); 2588 break; 2589 case FWTCODE_WREQB: 2590 r = sizeof(struct fw_asyhdr) + PLEN(fp->mode.wreqb.len) 2591 + sizeof(u_int32_t); 2592 break; 2593 case FWTCODE_LREQ: 2594 r = sizeof(struct fw_asyhdr) + PLEN(fp->mode.lreq.len) 2595 + sizeof(u_int32_t); 2596 break; 2597 case FWTCODE_RRESB: 2598 r = sizeof(struct fw_asyhdr) + PLEN(fp->mode.rresb.len) 2599 + sizeof(u_int32_t); 2600 break; 2601 case FWTCODE_LRES: 2602 r = sizeof(struct fw_asyhdr) + PLEN(fp->mode.lres.len) 2603 + sizeof(u_int32_t); 2604 break; 2605 case FWOHCITCODE_PHY: 2606 r = 16; 2607 break; 2608 default: 2609 device_printf(sc->fc.dev, "Unknown tcode %d\n", 2610 fp->mode.common.tcode); 2611 r = 0; 2612 } 2613 if (r > dbch->xferq.psize) { 2614 device_printf(sc->fc.dev, "Invalid packet length %d\n", r); 2615 /* panic ? */ 2616 } 2617 return r; 2618} 2619 2620static void 2621fwohci_arcv(struct fwohci_softc *sc, struct fwohci_dbch *dbch, int count) 2622{ 2623 struct fwohcidb_tr *db_tr; 2624 int z = 1; 2625 struct fw_pkt *fp; 2626 u_int8_t *ld; 2627 u_int32_t stat, off; 2628 u_int spd; 2629 int len, plen, hlen, pcnt, poff = 0, rlen; 2630 int s; 2631 caddr_t buf; 2632 int resCount; 2633 2634 if(&sc->arrq == dbch){ 2635 off = OHCI_ARQOFF; 2636 }else if(&sc->arrs == dbch){ 2637 off = OHCI_ARSOFF; 2638 }else{ 2639 return; 2640 } 2641 2642 s = splfw(); 2643 db_tr = dbch->top; 2644 pcnt = 0; 2645 /* XXX we cannot handle a packet which lies in more than two buf */ 2646 while (db_tr->db[0].db.desc.status & OHCI_CNTL_DMA_ACTIVE) { 2647 ld = (u_int8_t *)db_tr->buf + dbch->buf_offset; 2648 resCount = db_tr->db[0].db.desc.count; 2649 len = dbch->xferq.psize - resCount 2650 - dbch->buf_offset; 2651 while (len > 0 ) { 2652 if (count >= 0 && count-- == 0) 2653 goto out; 2654 if(dbch->frag.buf != NULL){ 2655 buf = dbch->frag.buf; 2656 if (dbch->frag.plen < 0) { 2657 /* incomplete header */ 2658 int hlen; 2659 2660 hlen = - dbch->frag.plen; 2661 rlen = hlen - dbch->frag.len; 2662 bcopy(ld, dbch->frag.buf + dbch->frag.len, rlen); 2663 ld += rlen; 2664 len -= rlen; 2665 dbch->frag.len += rlen; 2666#if 0 2667 printf("(1)frag.plen=%d frag.len=%d rlen=%d len=%d\n", dbch->frag.plen, dbch->frag.len, rlen, len); 2668#endif 2669 fp=(struct fw_pkt *)dbch->frag.buf; 2670 dbch->frag.plen 2671 = fwohci_get_plen(sc, 2672 dbch, fp, hlen); 2673 if (dbch->frag.plen == 0) 2674 goto out; 2675 } 2676 rlen = dbch->frag.plen - dbch->frag.len; 2677#if 0 2678 printf("(2)frag.plen=%d frag.len=%d rlen=%d len=%d\n", dbch->frag.plen, dbch->frag.len, rlen, len); 2679#endif 2680 bcopy(ld, dbch->frag.buf + dbch->frag.len, 2681 rlen); 2682 ld += rlen; 2683 len -= rlen; 2684 plen = dbch->frag.plen; 2685 dbch->frag.buf = NULL; 2686 dbch->frag.plen = 0; 2687 dbch->frag.len = 0; 2688 poff = 0; 2689 }else{ 2690 fp=(struct fw_pkt *)ld; 2691 fp->mode.ld[0] = htonl(fp->mode.ld[0]); 2692 switch(fp->mode.common.tcode){ 2693 case FWTCODE_RREQQ: 2694 case FWTCODE_WRES: 2695 case FWTCODE_WREQQ: 2696 case FWTCODE_RRESQ: 2697 case FWOHCITCODE_PHY: 2698 hlen = 12; 2699 break; 2700 case FWTCODE_RREQB: 2701 case FWTCODE_WREQB: 2702 case FWTCODE_LREQ: 2703 case FWTCODE_RRESB: 2704 case FWTCODE_LRES: 2705 hlen = 16; 2706 break; 2707 default: 2708 device_printf(sc->fc.dev, "Unknown tcode %d\n", fp->mode.common.tcode); 2709 goto out; 2710 } 2711 if (len >= hlen) { 2712 plen = fwohci_get_plen(sc, 2713 dbch, fp, hlen); 2714 if (plen == 0) 2715 goto out; 2716 plen = (plen + 3) & ~3; 2717 len -= plen; 2718 } else { 2719 plen = -hlen; 2720 len -= hlen; 2721 } 2722 if(resCount > 0 || len > 0){ 2723 buf = malloc(plen, M_FW, M_NOWAIT); 2724 if(buf == NULL){ 2725 printf("cannot malloc!\n"); 2726 free(db_tr->buf, M_FW); 2727 goto out; 2728 } 2729 bcopy(ld, buf, plen); 2730 poff = 0; 2731 dbch->frag.buf = NULL; 2732 dbch->frag.plen = 0; 2733 dbch->frag.len = 0; 2734 }else if(len < 0){ 2735 dbch->frag.buf = db_tr->buf; 2736 if (plen < 0) { 2737#if 0 2738 printf("plen < 0:" 2739 "hlen: %d len: %d\n", 2740 hlen, len); 2741#endif 2742 dbch->frag.len = hlen + len; 2743 dbch->frag.plen = -hlen; 2744 } else { 2745 dbch->frag.len = plen + len; 2746 dbch->frag.plen = plen; 2747 } 2748 bcopy(ld, db_tr->buf, dbch->frag.len); 2749 buf = NULL; 2750 }else{ 2751 buf = db_tr->buf; 2752 poff = ld - (u_int8_t *)buf; 2753 dbch->frag.buf = NULL; 2754 dbch->frag.plen = 0; 2755 dbch->frag.len = 0; 2756 } 2757 ld += plen; 2758 } 2759 if( buf != NULL){ 2760/* DMA result-code will be written at the tail of packet */ 2761 stat = ((struct fwohci_trailer *)(ld - sizeof(struct fwohci_trailer)))->stat; 2762 spd = (stat >> 5) & 0x3; 2763 stat &= 0x1f; 2764 switch(stat){ 2765 case FWOHCIEV_ACKPEND: 2766#if 0 2767 printf("fwohci_arcv: ack pending..\n"); 2768#endif 2769 /* fall through */ 2770 case FWOHCIEV_ACKCOMPL: 2771 if( poff != 0 ) 2772 bcopy(buf+poff, buf, plen - 4); 2773 fw_rcv(&sc->fc, buf, plen - sizeof(struct fwohci_trailer), 0, 0, spd); 2774 break; 2775 case FWOHCIEV_BUSRST: 2776 free(buf, M_FW); 2777 if (sc->fc.status != FWBUSRESET) 2778 printf("got BUSRST packet!?\n"); 2779 break; 2780 default: 2781 device_printf(sc->fc.dev, "Async DMA Receive error err = %02x %s\n", stat, fwohcicode[stat]); 2782#if 0 /* XXX */ 2783 goto out; 2784#endif 2785 break; 2786 } 2787 } 2788 pcnt ++; 2789 }; 2790out: 2791 if (resCount == 0) { 2792 /* done on this buffer */ 2793 fwohci_add_rx_buf(db_tr, dbch->xferq.psize, 2794 dbch->xferq.flag, 0, NULL); 2795 dbch->bottom->db[0].db.desc.depend |= z; 2796 dbch->bottom = db_tr; 2797 db_tr = STAILQ_NEXT(db_tr, link); 2798 dbch->top = db_tr; 2799 dbch->buf_offset = 0; 2800 } else { 2801 dbch->buf_offset = dbch->xferq.psize - resCount; 2802 break; 2803 } 2804 /* XXX make sure DMA is not dead */ 2805 } 2806#if 0 2807 if (pcnt < 1) 2808 printf("fwohci_arcv: no packets\n"); 2809#endif 2810 splx(s); 2811} 2812