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: src/sys/dev/firewire/fwohci.c,v 1.72 2004/01/22 14:41:17 simokawa Exp $ 35 * $FreeBSD: src/sys/dev/firewire/fwohci.c,v 1.1.2.19 2003/05/01 06:24:37 simokawa Exp $ 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/bus.h> 51 #include <sys/kernel.h> 52 #include <sys/conf.h> 53 #include <sys/device.h> 54 #include <sys/endian.h> 55 56 #include <sys/thread2.h> 57 58 #include <bus/firewire/firewire.h> 59 #include <bus/firewire/firewirereg.h> 60 #include <bus/firewire/fwdma.h> 61 #include <bus/firewire/fwohcireg.h> 62 #include <bus/firewire/fwohcivar.h> 63 #include <bus/firewire/firewire_phy.h> 64 65 #undef OHCI_DEBUG 66 67 static char dbcode[16][0x10]={"OUTM", "OUTL","INPM","INPL", 68 "STOR","LOAD","NOP ","STOP",}; 69 70 static char dbkey[8][0x10]={"ST0", "ST1","ST2","ST3", 71 "UNDEF","REG","SYS","DEV"}; 72 static char dbcond[4][0x10]={"NEV","C=1", "C=0", "ALL"}; 73 char fwohcicode[32][0x20]={ 74 "No stat","Undef","long","miss Ack err", 75 "underrun","overrun","desc err", "data read err", 76 "data write err","bus reset","timeout","tcode err", 77 "Undef","Undef","unknown event","flushed", 78 "Undef","ack complete","ack pend","Undef", 79 "ack busy_X","ack busy_A","ack busy_B","Undef", 80 "Undef","Undef","Undef","ack tardy", 81 "Undef","ack data_err","ack type_err",""}; 82 83 #define MAX_SPEED 3 84 extern char *linkspeed[]; 85 u_int32_t tagbit[4] = { 1 << 28, 1 << 29, 1 << 30, 1 << 31}; 86 87 static struct tcode_info tinfo[] = { 88 /* hdr_len block flag*/ 89 /* 0 WREQQ */ {16, FWTI_REQ | FWTI_TLABEL}, 90 /* 1 WREQB */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 91 /* 2 WRES */ {12, FWTI_RES}, 92 /* 3 XXX */ { 0, 0}, 93 /* 4 RREQQ */ {12, FWTI_REQ | FWTI_TLABEL}, 94 /* 5 RREQB */ {16, FWTI_REQ | FWTI_TLABEL}, 95 /* 6 RRESQ */ {16, FWTI_RES}, 96 /* 7 RRESB */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 97 /* 8 CYCS */ { 0, 0}, 98 /* 9 LREQ */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 99 /* a STREAM */ { 4, FWTI_REQ | FWTI_BLOCK_STR}, 100 /* b LRES */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 101 /* c XXX */ { 0, 0}, 102 /* d XXX */ { 0, 0}, 103 /* e PHY */ {12, FWTI_REQ}, 104 /* f XXX */ { 0, 0} 105 }; 106 107 #define OHCI_WRITE_SIGMASK 0xffff0000 108 #define OHCI_READ_SIGMASK 0xffff0000 109 110 #define OWRITE(sc, r, x) bus_space_write_4((sc)->bst, (sc)->bsh, (r), (x)) 111 #define OREAD(sc, r) bus_space_read_4((sc)->bst, (sc)->bsh, (r)) 112 113 static void fwohci_ibr (struct firewire_comm *); 114 static void fwohci_db_init (struct fwohci_softc *, struct fwohci_dbch *); 115 static void fwohci_db_free (struct fwohci_dbch *); 116 static void fwohci_arcv (struct fwohci_softc *, struct fwohci_dbch *, int); 117 static void fwohci_txd (struct fwohci_softc *, struct fwohci_dbch *); 118 static void fwohci_start_atq (struct firewire_comm *); 119 static void fwohci_start_ats (struct firewire_comm *); 120 static void fwohci_start (struct fwohci_softc *, struct fwohci_dbch *); 121 static u_int32_t fwphy_wrdata ( struct fwohci_softc *, u_int32_t, u_int32_t); 122 static u_int32_t fwphy_rddata ( struct fwohci_softc *, u_int32_t); 123 static int fwohci_rx_enable (struct fwohci_softc *, struct fwohci_dbch *); 124 static int fwohci_tx_enable (struct fwohci_softc *, struct fwohci_dbch *); 125 static int fwohci_irx_enable (struct firewire_comm *, int); 126 static int fwohci_irx_disable (struct firewire_comm *, int); 127 #if BYTE_ORDER == BIG_ENDIAN 128 static void fwohci_irx_post (struct firewire_comm *, u_int32_t *); 129 #endif 130 static int fwohci_itxbuf_enable (struct firewire_comm *, int); 131 static int fwohci_itx_disable (struct firewire_comm *, int); 132 static void fwohci_timeout (void *); 133 static void fwohci_set_intr (struct firewire_comm *, int); 134 135 static int fwohci_add_rx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int, struct fwdma_alloc *); 136 static int fwohci_add_tx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int); 137 static void dump_db (struct fwohci_softc *, u_int32_t); 138 static void print_db (struct fwohcidb_tr *, struct fwohcidb *, u_int32_t , u_int32_t); 139 static void dump_dma (struct fwohci_softc *, u_int32_t); 140 static u_int32_t fwohci_cyctimer (struct firewire_comm *); 141 static void fwohci_rbuf_update (struct fwohci_softc *, int); 142 static void fwohci_tbuf_update (struct fwohci_softc *, int); 143 void fwohci_txbufdb (struct fwohci_softc *, int , struct fw_bulkxfer *); 144 #if FWOHCI_TASKQUEUE 145 static void fwohci_complete(void *, int); 146 #endif 147 148 /* 149 * memory allocated for DMA programs 150 */ 151 #define DMA_PROG_ALLOC (8 * PAGE_SIZE) 152 153 #define NDB FWMAXQUEUE 154 155 #define OHCI_VERSION 0x00 156 #define OHCI_ATRETRY 0x08 157 #define OHCI_CROMHDR 0x18 158 #define OHCI_BUS_OPT 0x20 159 #define OHCI_BUSIRMC (1 << 31) 160 #define OHCI_BUSCMC (1 << 30) 161 #define OHCI_BUSISC (1 << 29) 162 #define OHCI_BUSBMC (1 << 28) 163 #define OHCI_BUSPMC (1 << 27) 164 #define OHCI_BUSFNC OHCI_BUSIRMC | OHCI_BUSCMC | OHCI_BUSISC |\ 165 OHCI_BUSBMC | OHCI_BUSPMC 166 167 #define OHCI_EUID_HI 0x24 168 #define OHCI_EUID_LO 0x28 169 170 #define OHCI_CROMPTR 0x34 171 #define OHCI_HCCCTL 0x50 172 #define OHCI_HCCCTLCLR 0x54 173 #define OHCI_AREQHI 0x100 174 #define OHCI_AREQHICLR 0x104 175 #define OHCI_AREQLO 0x108 176 #define OHCI_AREQLOCLR 0x10c 177 #define OHCI_PREQHI 0x110 178 #define OHCI_PREQHICLR 0x114 179 #define OHCI_PREQLO 0x118 180 #define OHCI_PREQLOCLR 0x11c 181 #define OHCI_PREQUPPER 0x120 182 183 #define OHCI_SID_BUF 0x64 184 #define OHCI_SID_CNT 0x68 185 #define OHCI_SID_ERR (1 << 31) 186 #define OHCI_SID_CNT_MASK 0xffc 187 188 #define OHCI_IT_STAT 0x90 189 #define OHCI_IT_STATCLR 0x94 190 #define OHCI_IT_MASK 0x98 191 #define OHCI_IT_MASKCLR 0x9c 192 193 #define OHCI_IR_STAT 0xa0 194 #define OHCI_IR_STATCLR 0xa4 195 #define OHCI_IR_MASK 0xa8 196 #define OHCI_IR_MASKCLR 0xac 197 198 #define OHCI_LNKCTL 0xe0 199 #define OHCI_LNKCTLCLR 0xe4 200 201 #define OHCI_PHYACCESS 0xec 202 #define OHCI_CYCLETIMER 0xf0 203 204 #define OHCI_DMACTL(off) (off) 205 #define OHCI_DMACTLCLR(off) (off + 4) 206 #define OHCI_DMACMD(off) (off + 0xc) 207 #define OHCI_DMAMATCH(off) (off + 0x10) 208 209 #define OHCI_ATQOFF 0x180 210 #define OHCI_ATQCTL OHCI_ATQOFF 211 #define OHCI_ATQCTLCLR (OHCI_ATQOFF + 4) 212 #define OHCI_ATQCMD (OHCI_ATQOFF + 0xc) 213 #define OHCI_ATQMATCH (OHCI_ATQOFF + 0x10) 214 215 #define OHCI_ATSOFF 0x1a0 216 #define OHCI_ATSCTL OHCI_ATSOFF 217 #define OHCI_ATSCTLCLR (OHCI_ATSOFF + 4) 218 #define OHCI_ATSCMD (OHCI_ATSOFF + 0xc) 219 #define OHCI_ATSMATCH (OHCI_ATSOFF + 0x10) 220 221 #define OHCI_ARQOFF 0x1c0 222 #define OHCI_ARQCTL OHCI_ARQOFF 223 #define OHCI_ARQCTLCLR (OHCI_ARQOFF + 4) 224 #define OHCI_ARQCMD (OHCI_ARQOFF + 0xc) 225 #define OHCI_ARQMATCH (OHCI_ARQOFF + 0x10) 226 227 #define OHCI_ARSOFF 0x1e0 228 #define OHCI_ARSCTL OHCI_ARSOFF 229 #define OHCI_ARSCTLCLR (OHCI_ARSOFF + 4) 230 #define OHCI_ARSCMD (OHCI_ARSOFF + 0xc) 231 #define OHCI_ARSMATCH (OHCI_ARSOFF + 0x10) 232 233 #define OHCI_ITOFF(CH) (0x200 + 0x10 * (CH)) 234 #define OHCI_ITCTL(CH) (OHCI_ITOFF(CH)) 235 #define OHCI_ITCTLCLR(CH) (OHCI_ITOFF(CH) + 4) 236 #define OHCI_ITCMD(CH) (OHCI_ITOFF(CH) + 0xc) 237 238 #define OHCI_IROFF(CH) (0x400 + 0x20 * (CH)) 239 #define OHCI_IRCTL(CH) (OHCI_IROFF(CH)) 240 #define OHCI_IRCTLCLR(CH) (OHCI_IROFF(CH) + 4) 241 #define OHCI_IRCMD(CH) (OHCI_IROFF(CH) + 0xc) 242 #define OHCI_IRMATCH(CH) (OHCI_IROFF(CH) + 0x10) 243 244 d_ioctl_t fwohci_ioctl; 245 246 /* 247 * Communication with PHY device 248 */ 249 static u_int32_t 250 fwphy_wrdata( struct fwohci_softc *sc, u_int32_t addr, u_int32_t data) 251 { 252 u_int32_t fun; 253 254 addr &= 0xf; 255 data &= 0xff; 256 257 fun = (PHYDEV_WRCMD | (addr << PHYDEV_REGADDR) | (data << PHYDEV_WRDATA)); 258 OWRITE(sc, OHCI_PHYACCESS, fun); 259 DELAY(100); 260 261 return(fwphy_rddata( sc, addr)); 262 } 263 264 static u_int32_t 265 fwohci_set_bus_manager(struct firewire_comm *fc, u_int node) 266 { 267 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 268 int i; 269 u_int32_t bm; 270 271 #define OHCI_CSR_DATA 0x0c 272 #define OHCI_CSR_COMP 0x10 273 #define OHCI_CSR_CONT 0x14 274 #define OHCI_BUS_MANAGER_ID 0 275 276 OWRITE(sc, OHCI_CSR_DATA, node); 277 OWRITE(sc, OHCI_CSR_COMP, 0x3f); 278 OWRITE(sc, OHCI_CSR_CONT, OHCI_BUS_MANAGER_ID); 279 for (i = 0; !(OREAD(sc, OHCI_CSR_CONT) & (1<<31)) && (i < 1000); i++) 280 DELAY(10); 281 bm = OREAD(sc, OHCI_CSR_DATA); 282 if((bm & 0x3f) == 0x3f) 283 bm = node; 284 if (bootverbose) 285 device_printf(sc->fc.dev, 286 "fw_set_bus_manager: %d->%d (loop=%d)\n", bm, node, i); 287 288 return(bm); 289 } 290 291 static u_int32_t 292 fwphy_rddata(struct fwohci_softc *sc, u_int addr) 293 { 294 u_int32_t fun, stat; 295 u_int i, retry = 0; 296 297 addr &= 0xf; 298 #define MAX_RETRY 100 299 again: 300 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_REG_FAIL); 301 fun = PHYDEV_RDCMD | (addr << PHYDEV_REGADDR); 302 OWRITE(sc, OHCI_PHYACCESS, fun); 303 for ( i = 0 ; i < MAX_RETRY ; i ++ ){ 304 fun = OREAD(sc, OHCI_PHYACCESS); 305 if ((fun & PHYDEV_RDCMD) == 0 && (fun & PHYDEV_RDDONE) != 0) 306 break; 307 DELAY(100); 308 } 309 if(i >= MAX_RETRY) { 310 if (bootverbose) 311 device_printf(sc->fc.dev, "phy read failed(1).\n"); 312 if (++retry < MAX_RETRY) { 313 DELAY(100); 314 goto again; 315 } 316 } 317 /* Make sure that SCLK is started */ 318 stat = OREAD(sc, FWOHCI_INTSTAT); 319 if ((stat & OHCI_INT_REG_FAIL) != 0 || 320 ((fun >> PHYDEV_REGADDR) & 0xf) != addr) { 321 if (bootverbose) 322 device_printf(sc->fc.dev, "phy read failed(2).\n"); 323 if (++retry < MAX_RETRY) { 324 DELAY(100); 325 goto again; 326 } 327 } 328 if (bootverbose || retry >= MAX_RETRY) 329 device_printf(sc->fc.dev, 330 "fwphy_rddata: 0x%x loop=%d, retry=%d\n", addr, i, retry); 331 #undef MAX_RETRY 332 return((fun >> PHYDEV_RDDATA )& 0xff); 333 } 334 /* Device specific ioctl. */ 335 int 336 fwohci_ioctl (struct dev_ioctl_args *ap) 337 { 338 cdev_t dev = ap->a_head.a_dev; 339 struct firewire_softc *sc; 340 struct fwohci_softc *fc; 341 int unit = DEV2UNIT(dev); 342 int err = 0; 343 struct fw_reg_req_t *reg = (struct fw_reg_req_t *) ap->a_data; 344 u_int32_t *dmach = (u_int32_t *) ap->a_data; 345 346 sc = devclass_get_softc(firewire_devclass, unit); 347 if(sc == NULL){ 348 return(EINVAL); 349 } 350 fc = (struct fwohci_softc *)sc->fc; 351 352 if (!ap->a_data) 353 return(EINVAL); 354 355 switch (ap->a_cmd) { 356 case FWOHCI_WRREG: 357 #define OHCI_MAX_REG 0x800 358 if(reg->addr <= OHCI_MAX_REG){ 359 OWRITE(fc, reg->addr, reg->data); 360 reg->data = OREAD(fc, reg->addr); 361 }else{ 362 err = EINVAL; 363 } 364 break; 365 case FWOHCI_RDREG: 366 if(reg->addr <= OHCI_MAX_REG){ 367 reg->data = OREAD(fc, reg->addr); 368 }else{ 369 err = EINVAL; 370 } 371 break; 372 /* Read DMA descriptors for debug */ 373 case DUMPDMA: 374 if(*dmach <= OHCI_MAX_DMA_CH ){ 375 dump_dma(fc, *dmach); 376 dump_db(fc, *dmach); 377 }else{ 378 err = EINVAL; 379 } 380 break; 381 /* Read/Write Phy registers */ 382 #define OHCI_MAX_PHY_REG 0xf 383 case FWOHCI_RDPHYREG: 384 if (reg->addr <= OHCI_MAX_PHY_REG) 385 reg->data = fwphy_rddata(fc, reg->addr); 386 else 387 err = EINVAL; 388 break; 389 case FWOHCI_WRPHYREG: 390 if (reg->addr <= OHCI_MAX_PHY_REG) 391 reg->data = fwphy_wrdata(fc, reg->addr, reg->data); 392 else 393 err = EINVAL; 394 break; 395 default: 396 err = EINVAL; 397 break; 398 } 399 return err; 400 } 401 402 static int 403 fwohci_probe_phy(struct fwohci_softc *sc, device_t dev) 404 { 405 u_int32_t reg, reg2; 406 int e1394a = 1; 407 /* 408 * probe PHY parameters 409 * 0. to prove PHY version, whether compliance of 1394a. 410 * 1. to probe maximum speed supported by the PHY and 411 * number of port supported by core-logic. 412 * It is not actually available port on your PC . 413 */ 414 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS); 415 DELAY(500); 416 417 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 } 476 477 478 void 479 fwohci_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 kprintf("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, sc->crom_dma.bus_addr); 536 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_BIGEND); 537 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_POSTWR); 538 OWRITE(sc, OHCI_SID_BUF, sc->sid_dma.bus_addr); 539 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_SID); 540 541 /* Enable link */ 542 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LINKEN); 543 544 /* Force to start async RX DMA */ 545 sc->arrq.xferq.flag &= ~FWXFERQ_RUNNING; 546 sc->arrs.xferq.flag &= ~FWXFERQ_RUNNING; 547 fwohci_rx_enable(sc, &sc->arrq); 548 fwohci_rx_enable(sc, &sc->arrs); 549 550 /* Initialize async TX */ 551 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 552 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 553 554 /* AT Retries */ 555 OWRITE(sc, FWOHCI_RETRY, 556 /* CycleLimit PhyRespRetries ATRespRetries ATReqRetries */ 557 (0xffff << 16 ) | (0x0f << 8) | (0x0f << 4) | 0x0f) ; 558 559 sc->atrq.top = STAILQ_FIRST(&sc->atrq.db_trq); 560 sc->atrs.top = STAILQ_FIRST(&sc->atrs.db_trq); 561 sc->atrq.bottom = sc->atrq.top; 562 sc->atrs.bottom = sc->atrs.top; 563 564 for( i = 0, db_tr = sc->atrq.top; i < sc->atrq.ndb ; 565 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 566 db_tr->xfer = NULL; 567 } 568 for( i = 0, db_tr = sc->atrs.top; i < sc->atrs.ndb ; 569 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 570 db_tr->xfer = NULL; 571 } 572 573 574 /* Enable interrupt */ 575 OWRITE(sc, FWOHCI_INTMASK, 576 OHCI_INT_ERR | OHCI_INT_PHY_SID 577 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 578 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 579 | OHCI_INT_PHY_BUS_R | OHCI_INT_PW_ERR); 580 fwohci_set_intr(&sc->fc, 1); 581 582 } 583 584 int 585 fwohci_init(struct fwohci_softc *sc, device_t dev) 586 { 587 int i, mver; 588 u_int32_t reg; 589 u_int8_t ui[8]; 590 591 #if FWOHCI_TASKQUEUE 592 TASK_INIT(&sc->fwohci_task_complete, 0, fwohci_complete, sc); 593 #endif 594 595 /* OHCI version */ 596 reg = OREAD(sc, OHCI_VERSION); 597 mver = (reg >> 16) & 0xff; 598 device_printf(dev, "OHCI version %x.%x (ROM=%d)\n", 599 mver, reg & 0xff, (reg>>24) & 1); 600 if (mver < 1 || mver > 9) { 601 device_printf(dev, "invalid OHCI version\n"); 602 return (ENXIO); 603 } 604 605 /* Available Isochrounous DMA channel probe */ 606 OWRITE(sc, OHCI_IT_MASK, 0xffffffff); 607 OWRITE(sc, OHCI_IR_MASK, 0xffffffff); 608 reg = OREAD(sc, OHCI_IT_MASK) & OREAD(sc, OHCI_IR_MASK); 609 OWRITE(sc, OHCI_IT_MASKCLR, 0xffffffff); 610 OWRITE(sc, OHCI_IR_MASKCLR, 0xffffffff); 611 for (i = 0; i < 0x20; i++) 612 if ((reg & (1 << i)) == 0) 613 break; 614 sc->fc.nisodma = i; 615 device_printf(dev, "No. of Isochronous channel is %d.\n", i); 616 if (i == 0) 617 return (ENXIO); 618 619 sc->fc.arq = &sc->arrq.xferq; 620 sc->fc.ars = &sc->arrs.xferq; 621 sc->fc.atq = &sc->atrq.xferq; 622 sc->fc.ats = &sc->atrs.xferq; 623 624 sc->arrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 625 sc->arrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 626 sc->atrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 627 sc->atrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 628 629 sc->arrq.xferq.start = NULL; 630 sc->arrs.xferq.start = NULL; 631 sc->atrq.xferq.start = fwohci_start_atq; 632 sc->atrs.xferq.start = fwohci_start_ats; 633 634 sc->arrq.xferq.buf = NULL; 635 sc->arrs.xferq.buf = NULL; 636 sc->atrq.xferq.buf = NULL; 637 sc->atrs.xferq.buf = NULL; 638 639 sc->arrq.xferq.dmach = -1; 640 sc->arrs.xferq.dmach = -1; 641 sc->atrq.xferq.dmach = -1; 642 sc->atrs.xferq.dmach = -1; 643 644 sc->arrq.ndesc = 1; 645 sc->arrs.ndesc = 1; 646 sc->atrq.ndesc = 8; /* equal to maximum of mbuf chains */ 647 sc->atrs.ndesc = 2; 648 649 sc->arrq.ndb = NDB; 650 sc->arrs.ndb = NDB / 2; 651 sc->atrq.ndb = NDB; 652 sc->atrs.ndb = NDB / 2; 653 654 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 655 sc->fc.it[i] = &sc->it[i].xferq; 656 sc->fc.ir[i] = &sc->ir[i].xferq; 657 sc->it[i].xferq.dmach = i; 658 sc->ir[i].xferq.dmach = i; 659 sc->it[i].ndb = 0; 660 sc->ir[i].ndb = 0; 661 } 662 663 sc->fc.tcode = tinfo; 664 sc->fc.dev = dev; 665 666 sc->fc.config_rom = fwdma_malloc(&sc->fc, CROMSIZE, CROMSIZE, 667 &sc->crom_dma, BUS_DMA_WAITOK); 668 if(sc->fc.config_rom == NULL){ 669 device_printf(dev, "config_rom alloc failed."); 670 return ENOMEM; 671 } 672 673 #if 0 674 bzero(&sc->fc.config_rom[0], CROMSIZE); 675 sc->fc.config_rom[1] = 0x31333934; 676 sc->fc.config_rom[2] = 0xf000a002; 677 sc->fc.config_rom[3] = OREAD(sc, OHCI_EUID_HI); 678 sc->fc.config_rom[4] = OREAD(sc, OHCI_EUID_LO); 679 sc->fc.config_rom[5] = 0; 680 sc->fc.config_rom[0] = (4 << 24) | (5 << 16); 681 682 sc->fc.config_rom[0] |= fw_crc16(&sc->fc.config_rom[1], 5*4); 683 #endif 684 685 686 /* SID recieve buffer must allign 2^11 */ 687 #define OHCI_SIDSIZE (1 << 11) 688 sc->sid_buf = fwdma_malloc(&sc->fc, OHCI_SIDSIZE, OHCI_SIDSIZE, 689 &sc->sid_dma, BUS_DMA_WAITOK); 690 if (sc->sid_buf == NULL) { 691 device_printf(dev, "sid_buf alloc failed."); 692 return ENOMEM; 693 } 694 695 fwdma_malloc(&sc->fc, sizeof(u_int32_t), sizeof(u_int32_t), 696 &sc->dummy_dma, BUS_DMA_WAITOK); 697 698 if (sc->dummy_dma.v_addr == NULL) { 699 device_printf(dev, "dummy_dma alloc failed."); 700 return ENOMEM; 701 } 702 703 fwohci_db_init(sc, &sc->arrq); 704 if ((sc->arrq.flags & FWOHCI_DBCH_INIT) == 0) 705 return ENOMEM; 706 707 fwohci_db_init(sc, &sc->arrs); 708 if ((sc->arrs.flags & FWOHCI_DBCH_INIT) == 0) 709 return ENOMEM; 710 711 fwohci_db_init(sc, &sc->atrq); 712 if ((sc->atrq.flags & FWOHCI_DBCH_INIT) == 0) 713 return ENOMEM; 714 715 fwohci_db_init(sc, &sc->atrs); 716 if ((sc->atrs.flags & FWOHCI_DBCH_INIT) == 0) 717 return ENOMEM; 718 719 sc->fc.eui.hi = OREAD(sc, FWOHCIGUID_H); 720 sc->fc.eui.lo = OREAD(sc, FWOHCIGUID_L); 721 for( i = 0 ; i < 8 ; i ++) 722 ui[i] = FW_EUI64_BYTE(&sc->fc.eui,i); 723 device_printf(dev, "EUI64 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", 724 ui[0], ui[1], ui[2], ui[3], ui[4], ui[5], ui[6], ui[7]); 725 726 sc->fc.ioctl = fwohci_ioctl; 727 sc->fc.cyctimer = fwohci_cyctimer; 728 sc->fc.set_bmr = fwohci_set_bus_manager; 729 sc->fc.ibr = fwohci_ibr; 730 sc->fc.irx_enable = fwohci_irx_enable; 731 sc->fc.irx_disable = fwohci_irx_disable; 732 733 sc->fc.itx_enable = fwohci_itxbuf_enable; 734 sc->fc.itx_disable = fwohci_itx_disable; 735 #if BYTE_ORDER == BIG_ENDIAN 736 sc->fc.irx_post = fwohci_irx_post; 737 #else 738 sc->fc.irx_post = NULL; 739 #endif 740 sc->fc.itx_post = NULL; 741 sc->fc.timeout = fwohci_timeout; 742 sc->fc.poll = fwohci_poll; 743 sc->fc.set_intr = fwohci_set_intr; 744 745 sc->intmask = sc->irstat = sc->itstat = 0; 746 747 fw_init(&sc->fc); 748 fwohci_reset(sc, dev); 749 750 return 0; 751 } 752 753 static void 754 fwohci_timeout(void *arg) 755 { 756 } 757 758 static u_int32_t 759 fwohci_cyctimer(struct firewire_comm *fc) 760 { 761 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 762 return(OREAD(sc, OHCI_CYCLETIMER)); 763 } 764 765 int 766 fwohci_detach(struct fwohci_softc *sc, device_t dev) 767 { 768 int i; 769 770 if (sc->sid_buf != NULL) 771 fwdma_free(&sc->fc, &sc->sid_dma); 772 if (sc->fc.config_rom != NULL) 773 fwdma_free(&sc->fc, &sc->crom_dma); 774 775 fwohci_db_free(&sc->arrq); 776 fwohci_db_free(&sc->arrs); 777 778 fwohci_db_free(&sc->atrq); 779 fwohci_db_free(&sc->atrs); 780 781 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 782 fwohci_db_free(&sc->it[i]); 783 fwohci_db_free(&sc->ir[i]); 784 } 785 786 return 0; 787 } 788 789 #define LAST_DB(dbtr, db) do { \ 790 struct fwohcidb_tr *_dbtr = (dbtr); \ 791 int _cnt = _dbtr->dbcnt; \ 792 db = &_dbtr->db[ (_cnt > 2) ? (_cnt -1) : 0]; \ 793 } while (0) 794 795 static void 796 fwohci_execute_db(void *arg, bus_dma_segment_t *segs, int nseg, int error) 797 { 798 struct fwohcidb_tr *db_tr; 799 struct fwohcidb *db; 800 bus_dma_segment_t *s; 801 int i; 802 803 db_tr = (struct fwohcidb_tr *)arg; 804 db = &db_tr->db[db_tr->dbcnt]; 805 if (error) { 806 if (firewire_debug || error != EFBIG) 807 kprintf("fwohci_execute_db: error=%d\n", error); 808 return; 809 } 810 for (i = 0; i < nseg; i++) { 811 s = &segs[i]; 812 FWOHCI_DMA_WRITE(db->db.desc.addr, s->ds_addr); 813 FWOHCI_DMA_WRITE(db->db.desc.cmd, s->ds_len); 814 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 815 db++; 816 db_tr->dbcnt++; 817 } 818 } 819 820 static void 821 fwohci_execute_db2(void *arg, bus_dma_segment_t *segs, int nseg, 822 bus_size_t size, int error) 823 { 824 fwohci_execute_db(arg, segs, nseg, error); 825 } 826 827 static void 828 fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 829 { 830 int i; 831 int tcode, hdr_len, pl_off; 832 int fsegment = -1; 833 u_int32_t off; 834 struct fw_xfer *xfer; 835 struct fw_pkt *fp; 836 struct fwohci_txpkthdr *ohcifp; 837 struct fwohcidb_tr *db_tr; 838 struct fwohcidb *db; 839 u_int32_t *ld; 840 struct tcode_info *info; 841 static int maxdesc=0; 842 843 if(&sc->atrq == dbch){ 844 off = OHCI_ATQOFF; 845 }else if(&sc->atrs == dbch){ 846 off = OHCI_ATSOFF; 847 }else{ 848 return; 849 } 850 851 if (dbch->flags & FWOHCI_DBCH_FULL) 852 return; 853 854 crit_enter(); 855 db_tr = dbch->top; 856 txloop: 857 xfer = STAILQ_FIRST(&dbch->xferq.q); 858 if(xfer == NULL){ 859 goto kick; 860 } 861 if(dbch->xferq.queued == 0 ){ 862 device_printf(sc->fc.dev, "TX queue empty\n"); 863 } 864 STAILQ_REMOVE_HEAD(&dbch->xferq.q, link); 865 db_tr->xfer = xfer; 866 xfer->state = FWXF_START; 867 868 fp = &xfer->send.hdr; 869 tcode = fp->mode.common.tcode; 870 871 ohcifp = (struct fwohci_txpkthdr *) db_tr->db[1].db.immed; 872 info = &tinfo[tcode]; 873 hdr_len = pl_off = info->hdr_len; 874 875 ld = &ohcifp->mode.ld[0]; 876 ld[0] = ld[1] = ld[2] = ld[3] = 0; 877 for( i = 0 ; i < pl_off ; i+= 4) 878 ld[i/4] = fp->mode.ld[i/4]; 879 880 ohcifp->mode.common.spd = xfer->send.spd & 0x7; 881 if (tcode == FWTCODE_STREAM ){ 882 hdr_len = 8; 883 ohcifp->mode.stream.len = fp->mode.stream.len; 884 } else if (tcode == FWTCODE_PHY) { 885 hdr_len = 12; 886 ld[1] = fp->mode.ld[1]; 887 ld[2] = fp->mode.ld[2]; 888 ohcifp->mode.common.spd = 0; 889 ohcifp->mode.common.tcode = FWOHCITCODE_PHY; 890 } else { 891 ohcifp->mode.asycomm.dst = fp->mode.hdr.dst; 892 ohcifp->mode.asycomm.srcbus = OHCI_ASYSRCBUS; 893 ohcifp->mode.asycomm.tlrt |= FWRETRY_X; 894 } 895 db = &db_tr->db[0]; 896 FWOHCI_DMA_WRITE(db->db.desc.cmd, 897 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | hdr_len); 898 FWOHCI_DMA_WRITE(db->db.desc.addr, 0); 899 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 900 /* Specify bound timer of asy. responce */ 901 if(&sc->atrs == dbch){ 902 FWOHCI_DMA_WRITE(db->db.desc.res, 903 (OREAD(sc, OHCI_CYCLETIMER) >> 12) + (1 << 13)); 904 } 905 #if BYTE_ORDER == BIG_ENDIAN 906 if (tcode == FWTCODE_WREQQ || tcode == FWTCODE_RRESQ) 907 hdr_len = 12; 908 for (i = 0; i < hdr_len/4; i ++) 909 FWOHCI_DMA_WRITE(ld[i], ld[i]); 910 #endif 911 912 again: 913 db_tr->dbcnt = 2; 914 db = &db_tr->db[db_tr->dbcnt]; 915 if (xfer->send.pay_len > 0) { 916 int err; 917 /* handle payload */ 918 if (xfer->mbuf == NULL) { 919 err = bus_dmamap_load(dbch->dmat, db_tr->dma_map, 920 &xfer->send.payload[0], xfer->send.pay_len, 921 fwohci_execute_db, db_tr, 922 /*flags*/0); 923 } else { 924 /* XXX we can handle only 6 (=8-2) mbuf chains */ 925 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 926 xfer->mbuf, 927 fwohci_execute_db2, db_tr, 928 /* flags */0); 929 if (err == EFBIG) { 930 struct mbuf *m0; 931 932 if (firewire_debug) 933 device_printf(sc->fc.dev, "EFBIG.\n"); 934 m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 935 if (m0 != NULL) { 936 m_copydata(xfer->mbuf, 0, 937 xfer->mbuf->m_pkthdr.len, 938 mtod(m0, caddr_t)); 939 m0->m_len = m0->m_pkthdr.len = 940 xfer->mbuf->m_pkthdr.len; 941 m_freem(xfer->mbuf); 942 xfer->mbuf = m0; 943 goto again; 944 } 945 device_printf(sc->fc.dev, "m_getcl failed.\n"); 946 } 947 } 948 if (err) 949 kprintf("dmamap_load: err=%d\n", err); 950 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 951 BUS_DMASYNC_PREWRITE); 952 #if 0 /* OHCI_OUTPUT_MODE == 0 */ 953 for (i = 2; i < db_tr->dbcnt; i++) 954 FWOHCI_DMA_SET(db_tr->db[i].db.desc.cmd, 955 OHCI_OUTPUT_MORE); 956 #endif 957 } 958 if (maxdesc < db_tr->dbcnt) { 959 maxdesc = db_tr->dbcnt; 960 if (bootverbose) 961 device_printf(sc->fc.dev, "maxdesc: %d\n", maxdesc); 962 } 963 /* last db */ 964 LAST_DB(db_tr, db); 965 FWOHCI_DMA_SET(db->db.desc.cmd, 966 OHCI_OUTPUT_LAST | OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 967 FWOHCI_DMA_WRITE(db->db.desc.depend, 968 STAILQ_NEXT(db_tr, link)->bus_addr); 969 970 if(fsegment == -1 ) 971 fsegment = db_tr->dbcnt; 972 if (dbch->pdb_tr != NULL) { 973 LAST_DB(dbch->pdb_tr, db); 974 FWOHCI_DMA_SET(db->db.desc.depend, db_tr->dbcnt); 975 } 976 dbch->pdb_tr = db_tr; 977 db_tr = STAILQ_NEXT(db_tr, link); 978 if(db_tr != dbch->bottom){ 979 goto txloop; 980 } else { 981 device_printf(sc->fc.dev, "fwohci_start: lack of db_trq\n"); 982 dbch->flags |= FWOHCI_DBCH_FULL; 983 } 984 kick: 985 /* kick asy q */ 986 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 987 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 988 989 if(dbch->xferq.flag & FWXFERQ_RUNNING) { 990 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 991 } else { 992 if (bootverbose) 993 device_printf(sc->fc.dev, "start AT DMA status=%x\n", 994 OREAD(sc, OHCI_DMACTL(off))); 995 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | fsegment); 996 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 997 dbch->xferq.flag |= FWXFERQ_RUNNING; 998 } 999 1000 dbch->top = db_tr; 1001 crit_exit(); 1002 return; 1003 } 1004 1005 static void 1006 fwohci_start_atq(struct firewire_comm *fc) 1007 { 1008 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1009 fwohci_start( sc, &(sc->atrq)); 1010 return; 1011 } 1012 1013 static void 1014 fwohci_start_ats(struct firewire_comm *fc) 1015 { 1016 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1017 fwohci_start( sc, &(sc->atrs)); 1018 return; 1019 } 1020 1021 static void 1022 fwohci_txd(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1023 { 1024 int ch, err = 0; 1025 struct fwohcidb_tr *tr; 1026 struct fwohcidb *db; 1027 struct fw_xfer *xfer; 1028 u_int32_t off; 1029 u_int stat, status; 1030 int packets; 1031 struct firewire_comm *fc = (struct firewire_comm *)sc; 1032 1033 if(&sc->atrq == dbch){ 1034 off = OHCI_ATQOFF; 1035 ch = ATRQ_CH; 1036 }else if(&sc->atrs == dbch){ 1037 off = OHCI_ATSOFF; 1038 ch = ATRS_CH; 1039 }else{ 1040 return; 1041 } 1042 crit_enter(); 1043 tr = dbch->bottom; 1044 packets = 0; 1045 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 1046 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 1047 while(dbch->xferq.queued > 0){ 1048 LAST_DB(tr, db); 1049 status = FWOHCI_DMA_READ(db->db.desc.res) >> OHCI_STATUS_SHIFT; 1050 if(!(status & OHCI_CNTL_DMA_ACTIVE)){ 1051 if (fc->status != FWBUSRESET) 1052 /* maybe out of order?? */ 1053 goto out; 1054 } 1055 bus_dmamap_sync(dbch->dmat, tr->dma_map, 1056 BUS_DMASYNC_POSTWRITE); 1057 bus_dmamap_unload(dbch->dmat, tr->dma_map); 1058 #if 1 1059 if (firewire_debug) 1060 dump_db(sc, ch); 1061 #endif 1062 if(status & OHCI_CNTL_DMA_DEAD) { 1063 /* Stop DMA */ 1064 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1065 device_printf(sc->fc.dev, "force reset AT FIFO\n"); 1066 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_LINKEN); 1067 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS | OHCI_HCC_LINKEN); 1068 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1069 } 1070 stat = status & FWOHCIEV_MASK; 1071 switch(stat){ 1072 case FWOHCIEV_ACKPEND: 1073 case FWOHCIEV_ACKCOMPL: 1074 err = 0; 1075 break; 1076 case FWOHCIEV_ACKBSA: 1077 case FWOHCIEV_ACKBSB: 1078 case FWOHCIEV_ACKBSX: 1079 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1080 err = EBUSY; 1081 break; 1082 case FWOHCIEV_FLUSHED: 1083 case FWOHCIEV_ACKTARD: 1084 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1085 err = EAGAIN; 1086 break; 1087 case FWOHCIEV_MISSACK: 1088 case FWOHCIEV_UNDRRUN: 1089 case FWOHCIEV_OVRRUN: 1090 case FWOHCIEV_DESCERR: 1091 case FWOHCIEV_DTRDERR: 1092 case FWOHCIEV_TIMEOUT: 1093 case FWOHCIEV_TCODERR: 1094 case FWOHCIEV_UNKNOWN: 1095 case FWOHCIEV_ACKDERR: 1096 case FWOHCIEV_ACKTERR: 1097 default: 1098 device_printf(sc->fc.dev, "txd err=%2x %s\n", 1099 stat, fwohcicode[stat]); 1100 err = EINVAL; 1101 break; 1102 } 1103 if (tr->xfer != NULL) { 1104 xfer = tr->xfer; 1105 if (xfer->state == FWXF_RCVD) { 1106 #if 0 1107 if (firewire_debug) 1108 kprintf("already rcvd\n"); 1109 #endif 1110 fw_xfer_done(xfer); 1111 } else { 1112 xfer->state = FWXF_SENT; 1113 if (err == EBUSY && fc->status != FWBUSRESET) { 1114 xfer->state = FWXF_BUSY; 1115 xfer->resp = err; 1116 if (xfer->retry_req != NULL) 1117 xfer->retry_req(xfer); 1118 else { 1119 xfer->recv.pay_len = 0; 1120 fw_xfer_done(xfer); 1121 } 1122 } else if (stat != FWOHCIEV_ACKPEND) { 1123 if (stat != FWOHCIEV_ACKCOMPL) 1124 xfer->state = FWXF_SENTERR; 1125 xfer->resp = err; 1126 xfer->recv.pay_len = 0; 1127 fw_xfer_done(xfer); 1128 } 1129 } 1130 /* 1131 * The watchdog timer takes care of split 1132 * transcation timeout for ACKPEND case. 1133 */ 1134 } else { 1135 kprintf("this shouldn't happen\n"); 1136 } 1137 dbch->xferq.queued --; 1138 tr->xfer = NULL; 1139 1140 packets ++; 1141 tr = STAILQ_NEXT(tr, link); 1142 dbch->bottom = tr; 1143 if (dbch->bottom == dbch->top) { 1144 /* we reaches the end of context program */ 1145 if (firewire_debug && dbch->xferq.queued > 0) 1146 kprintf("queued > 0\n"); 1147 break; 1148 } 1149 } 1150 out: 1151 if ((dbch->flags & FWOHCI_DBCH_FULL) && packets > 0) { 1152 kprintf("make free slot\n"); 1153 dbch->flags &= ~FWOHCI_DBCH_FULL; 1154 fwohci_start(sc, dbch); 1155 } 1156 crit_exit(); 1157 } 1158 1159 static void 1160 fwohci_db_free(struct fwohci_dbch *dbch) 1161 { 1162 struct fwohcidb_tr *db_tr; 1163 int idb; 1164 1165 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1166 return; 1167 1168 for(db_tr = STAILQ_FIRST(&dbch->db_trq), idb = 0; idb < dbch->ndb; 1169 db_tr = STAILQ_NEXT(db_tr, link), idb++){ 1170 if ((dbch->xferq.flag & FWXFERQ_EXTBUF) == 0 && 1171 db_tr->buf != NULL) { 1172 fwdma_free_size(dbch->dmat, db_tr->dma_map, 1173 db_tr->buf, dbch->xferq.psize); 1174 db_tr->buf = NULL; 1175 } else if (db_tr->dma_map != NULL) 1176 bus_dmamap_destroy(dbch->dmat, db_tr->dma_map); 1177 } 1178 dbch->ndb = 0; 1179 db_tr = STAILQ_FIRST(&dbch->db_trq); 1180 fwdma_free_multiseg(dbch->am); 1181 kfree(db_tr, M_FW); 1182 STAILQ_INIT(&dbch->db_trq); 1183 dbch->flags &= ~FWOHCI_DBCH_INIT; 1184 } 1185 1186 static void 1187 fwohci_db_init(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1188 { 1189 int idb; 1190 struct fwohcidb_tr *db_tr; 1191 1192 if ((dbch->flags & FWOHCI_DBCH_INIT) != 0) 1193 goto out; 1194 1195 /* create dma_tag for buffers */ 1196 #define MAX_REQCOUNT 0xffff 1197 if (bus_dma_tag_create(/*parent*/ sc->fc.dmat, 1198 /*alignment*/ 1, /*boundary*/ 0, 1199 /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 1200 /*highaddr*/ BUS_SPACE_MAXADDR, 1201 /*filter*/NULL, /*filterarg*/NULL, 1202 /*maxsize*/ dbch->xferq.psize, 1203 /*nsegments*/ dbch->ndesc > 3 ? dbch->ndesc - 2 : 1, 1204 /*maxsegsz*/ MAX_REQCOUNT, 1205 /*flags*/ 0, 1206 #if defined(__FreeBSD__) && __FreeBSD_version >= 501102 1207 /*lockfunc*/busdma_lock_mutex, 1208 /*lockarg*/&Giant, 1209 #endif 1210 &dbch->dmat)) 1211 return; 1212 1213 /* allocate DB entries and attach one to each DMA channels */ 1214 /* DB entry must start at 16 bytes bounary. */ 1215 STAILQ_INIT(&dbch->db_trq); 1216 db_tr = (struct fwohcidb_tr *) 1217 kmalloc(sizeof(struct fwohcidb_tr) * dbch->ndb, 1218 M_FW, M_WAITOK | M_ZERO); 1219 1220 #define DB_SIZE(x) (sizeof(struct fwohcidb) * (x)->ndesc) 1221 dbch->am = fwdma_malloc_multiseg(&sc->fc, DB_SIZE(dbch), 1222 DB_SIZE(dbch), dbch->ndb, BUS_DMA_WAITOK); 1223 if (dbch->am == NULL) { 1224 kprintf("fwohci_db_init: fwdma_malloc_multiseg failed\n"); 1225 kfree(db_tr, M_FW); 1226 return; 1227 } 1228 /* Attach DB to DMA ch. */ 1229 for(idb = 0 ; idb < dbch->ndb ; idb++){ 1230 db_tr->dbcnt = 0; 1231 db_tr->db = (struct fwohcidb *)fwdma_v_addr(dbch->am, idb); 1232 db_tr->bus_addr = fwdma_bus_addr(dbch->am, idb); 1233 /* create dmamap for buffers */ 1234 /* XXX do we need 4bytes alignment tag? */ 1235 /* XXX don't alloc dma_map for AR */ 1236 if (bus_dmamap_create(dbch->dmat, 0, &db_tr->dma_map) != 0) { 1237 kprintf("bus_dmamap_create failed\n"); 1238 dbch->flags = FWOHCI_DBCH_INIT; /* XXX fake */ 1239 fwohci_db_free(dbch); 1240 return; 1241 } 1242 STAILQ_INSERT_TAIL(&dbch->db_trq, db_tr, link); 1243 if (dbch->xferq.flag & FWXFERQ_EXTBUF) { 1244 if (idb % dbch->xferq.bnpacket == 0) 1245 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1246 ].start = (caddr_t)db_tr; 1247 if ((idb + 1) % dbch->xferq.bnpacket == 0) 1248 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1249 ].end = (caddr_t)db_tr; 1250 } 1251 db_tr++; 1252 } 1253 STAILQ_LAST(&dbch->db_trq, fwohcidb_tr,link)->link.stqe_next 1254 = STAILQ_FIRST(&dbch->db_trq); 1255 out: 1256 dbch->xferq.queued = 0; 1257 dbch->pdb_tr = NULL; 1258 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1259 dbch->bottom = dbch->top; 1260 dbch->flags = FWOHCI_DBCH_INIT; 1261 } 1262 1263 static int 1264 fwohci_itx_disable(struct firewire_comm *fc, int dmach) 1265 { 1266 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1267 int sleepch; 1268 1269 OWRITE(sc, OHCI_ITCTLCLR(dmach), 1270 OHCI_CNTL_DMA_RUN | OHCI_CNTL_CYCMATCH_S); 1271 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1272 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1273 /* XXX we cannot free buffers until the DMA really stops */ 1274 tsleep((void *)&sleepch, FWPRI, "fwitxd", hz); 1275 fwohci_db_free(&sc->it[dmach]); 1276 sc->it[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1277 return 0; 1278 } 1279 1280 static int 1281 fwohci_irx_disable(struct firewire_comm *fc, int dmach) 1282 { 1283 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1284 int sleepch; 1285 1286 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1287 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1288 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1289 /* XXX we cannot free buffers until the DMA really stops */ 1290 tsleep((void *)&sleepch, FWPRI, "fwirxd", hz); 1291 fwohci_db_free(&sc->ir[dmach]); 1292 sc->ir[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1293 return 0; 1294 } 1295 1296 #if BYTE_ORDER == BIG_ENDIAN 1297 static void 1298 fwohci_irx_post (struct firewire_comm *fc , u_int32_t *qld) 1299 { 1300 qld[0] = FWOHCI_DMA_READ(qld[0]); 1301 return; 1302 } 1303 #endif 1304 1305 static int 1306 fwohci_tx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1307 { 1308 int err = 0; 1309 int idb, z, i, dmach = 0, ldesc; 1310 u_int32_t off = 0; 1311 struct fwohcidb_tr *db_tr; 1312 struct fwohcidb *db; 1313 1314 if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){ 1315 err = EINVAL; 1316 return err; 1317 } 1318 z = dbch->ndesc; 1319 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1320 if( &sc->it[dmach] == dbch){ 1321 off = OHCI_ITOFF(dmach); 1322 break; 1323 } 1324 } 1325 if(off == 0){ 1326 err = EINVAL; 1327 return err; 1328 } 1329 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1330 return err; 1331 dbch->xferq.flag |= FWXFERQ_RUNNING; 1332 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1333 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1334 } 1335 db_tr = dbch->top; 1336 for (idb = 0; idb < dbch->ndb; idb ++) { 1337 fwohci_add_tx_buf(dbch, db_tr, idb); 1338 if(STAILQ_NEXT(db_tr, link) == NULL){ 1339 break; 1340 } 1341 db = db_tr->db; 1342 ldesc = db_tr->dbcnt - 1; 1343 FWOHCI_DMA_WRITE(db[0].db.desc.depend, 1344 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1345 db[ldesc].db.desc.depend = db[0].db.desc.depend; 1346 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1347 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1348 FWOHCI_DMA_SET( 1349 db[ldesc].db.desc.cmd, 1350 OHCI_INTERRUPT_ALWAYS); 1351 /* OHCI 1.1 and above */ 1352 FWOHCI_DMA_SET( 1353 db[0].db.desc.cmd, 1354 OHCI_INTERRUPT_ALWAYS); 1355 } 1356 } 1357 db_tr = STAILQ_NEXT(db_tr, link); 1358 } 1359 FWOHCI_DMA_CLEAR( 1360 dbch->bottom->db[dbch->bottom->dbcnt - 1].db.desc.depend, 0xf); 1361 return err; 1362 } 1363 1364 static int 1365 fwohci_rx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1366 { 1367 int err = 0; 1368 int idb, z, i, dmach = 0, ldesc; 1369 u_int32_t off = 0; 1370 struct fwohcidb_tr *db_tr; 1371 struct fwohcidb *db; 1372 1373 z = dbch->ndesc; 1374 if(&sc->arrq == dbch){ 1375 off = OHCI_ARQOFF; 1376 }else if(&sc->arrs == dbch){ 1377 off = OHCI_ARSOFF; 1378 }else{ 1379 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1380 if( &sc->ir[dmach] == dbch){ 1381 off = OHCI_IROFF(dmach); 1382 break; 1383 } 1384 } 1385 } 1386 if(off == 0){ 1387 err = EINVAL; 1388 return err; 1389 } 1390 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1391 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1392 return err; 1393 }else{ 1394 if(dbch->xferq.flag & FWXFERQ_RUNNING){ 1395 err = EBUSY; 1396 return err; 1397 } 1398 } 1399 dbch->xferq.flag |= FWXFERQ_RUNNING; 1400 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1401 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1402 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1403 } 1404 db_tr = dbch->top; 1405 for (idb = 0; idb < dbch->ndb; idb ++) { 1406 fwohci_add_rx_buf(dbch, db_tr, idb, &sc->dummy_dma); 1407 if (STAILQ_NEXT(db_tr, link) == NULL) 1408 break; 1409 db = db_tr->db; 1410 ldesc = db_tr->dbcnt - 1; 1411 FWOHCI_DMA_WRITE(db[ldesc].db.desc.depend, 1412 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1413 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1414 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1415 FWOHCI_DMA_SET( 1416 db[ldesc].db.desc.cmd, 1417 OHCI_INTERRUPT_ALWAYS); 1418 FWOHCI_DMA_CLEAR( 1419 db[ldesc].db.desc.depend, 1420 0xf); 1421 } 1422 } 1423 db_tr = STAILQ_NEXT(db_tr, link); 1424 } 1425 FWOHCI_DMA_CLEAR( 1426 dbch->bottom->db[db_tr->dbcnt - 1].db.desc.depend, 0xf); 1427 dbch->buf_offset = 0; 1428 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1429 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1430 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1431 return err; 1432 }else{ 1433 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | z); 1434 } 1435 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 1436 return err; 1437 } 1438 1439 static int 1440 fwohci_next_cycle(struct firewire_comm *fc, int cycle_now) 1441 { 1442 int sec, cycle, cycle_match; 1443 1444 cycle = cycle_now & 0x1fff; 1445 sec = cycle_now >> 13; 1446 #define CYCLE_MOD 0x10 1447 #if 1 1448 #define CYCLE_DELAY 8 /* min delay to start DMA */ 1449 #else 1450 #define CYCLE_DELAY 7000 /* min delay to start DMA */ 1451 #endif 1452 cycle = cycle + CYCLE_DELAY; 1453 if (cycle >= 8000) { 1454 sec ++; 1455 cycle -= 8000; 1456 } 1457 cycle = roundup2(cycle, CYCLE_MOD); 1458 if (cycle >= 8000) { 1459 sec ++; 1460 if (cycle == 8000) 1461 cycle = 0; 1462 else 1463 cycle = CYCLE_MOD; 1464 } 1465 cycle_match = ((sec << 13) | cycle) & 0x7ffff; 1466 1467 return(cycle_match); 1468 } 1469 1470 static int 1471 fwohci_itxbuf_enable(struct firewire_comm *fc, int dmach) 1472 { 1473 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1474 int err = 0; 1475 struct fwohci_dbch *dbch; 1476 int cycle_match, cycle_now, ldesc; 1477 u_int32_t stat; 1478 struct fw_bulkxfer *first, *chunk, *prev; 1479 struct fw_xferq *it; 1480 1481 dbch = &sc->it[dmach]; 1482 it = &dbch->xferq; 1483 1484 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) { 1485 dbch->ndb = it->bnpacket * it->bnchunk; 1486 dbch->ndesc = 3; 1487 fwohci_db_init(sc, dbch); 1488 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1489 return ENOMEM; 1490 err = fwohci_tx_enable(sc, dbch); 1491 } 1492 if(err) 1493 return err; 1494 1495 ldesc = dbch->ndesc - 1; 1496 crit_enter(); 1497 prev = STAILQ_LAST(&it->stdma, fw_bulkxfer, link); 1498 while ((chunk = STAILQ_FIRST(&it->stvalid)) != NULL) { 1499 struct fwohcidb *db; 1500 1501 fwdma_sync_multiseg(it->buf, chunk->poffset, it->bnpacket, 1502 BUS_DMASYNC_PREWRITE); 1503 fwohci_txbufdb(sc, dmach, chunk); 1504 if (prev != NULL) { 1505 db = ((struct fwohcidb_tr *)(prev->end))->db; 1506 #if 0 /* XXX necessary? */ 1507 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, 1508 OHCI_BRANCH_ALWAYS); 1509 #endif 1510 #if 0 /* if bulkxfer->npacket changes */ 1511 db[ldesc].db.desc.depend = db[0].db.desc.depend = 1512 ((struct fwohcidb_tr *) 1513 (chunk->start))->bus_addr | dbch->ndesc; 1514 #else 1515 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 1516 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1517 #endif 1518 } 1519 STAILQ_REMOVE_HEAD(&it->stvalid, link); 1520 STAILQ_INSERT_TAIL(&it->stdma, chunk, link); 1521 prev = chunk; 1522 } 1523 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1524 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1525 crit_exit(); 1526 stat = OREAD(sc, OHCI_ITCTL(dmach)); 1527 if (firewire_debug && (stat & OHCI_CNTL_CYCMATCH_S)) 1528 kprintf("stat 0x%x\n", stat); 1529 1530 if (stat & (OHCI_CNTL_DMA_ACTIVE | OHCI_CNTL_CYCMATCH_S)) 1531 return 0; 1532 1533 #if 0 1534 OWRITE(sc, OHCI_ITCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1535 #endif 1536 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1537 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1538 OWRITE(sc, OHCI_IT_MASK, 1 << dmach); 1539 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IT); 1540 1541 first = STAILQ_FIRST(&it->stdma); 1542 OWRITE(sc, OHCI_ITCMD(dmach), 1543 ((struct fwohcidb_tr *)(first->start))->bus_addr | dbch->ndesc); 1544 if (firewire_debug) { 1545 kprintf("fwohci_itxbuf_enable: kick 0x%08x\n", stat); 1546 #if 1 1547 dump_dma(sc, ITX_CH + dmach); 1548 #endif 1549 } 1550 if ((stat & OHCI_CNTL_DMA_RUN) == 0) { 1551 #if 1 1552 /* Don't start until all chunks are buffered */ 1553 if (STAILQ_FIRST(&it->stfree) != NULL) 1554 goto out; 1555 #endif 1556 #if 1 1557 /* Clear cycle match counter bits */ 1558 OWRITE(sc, OHCI_ITCTLCLR(dmach), 0xffff0000); 1559 1560 /* 2bit second + 13bit cycle */ 1561 cycle_now = (fc->cyctimer(fc) >> 12) & 0x7fff; 1562 cycle_match = fwohci_next_cycle(fc, cycle_now); 1563 1564 OWRITE(sc, OHCI_ITCTL(dmach), 1565 OHCI_CNTL_CYCMATCH_S | (cycle_match << 16) 1566 | OHCI_CNTL_DMA_RUN); 1567 #else 1568 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_RUN); 1569 #endif 1570 if (firewire_debug) { 1571 kprintf("cycle_match: 0x%04x->0x%04x\n", 1572 cycle_now, cycle_match); 1573 dump_dma(sc, ITX_CH + dmach); 1574 dump_db(sc, ITX_CH + dmach); 1575 } 1576 } else if ((stat & OHCI_CNTL_CYCMATCH_S) == 0) { 1577 device_printf(sc->fc.dev, 1578 "IT DMA underrun (0x%08x)\n", stat); 1579 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_WAKE); 1580 } 1581 out: 1582 return err; 1583 } 1584 1585 static int 1586 fwohci_irx_enable(struct firewire_comm *fc, int dmach) 1587 { 1588 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1589 int err = 0, ldesc; 1590 unsigned short tag, ich; 1591 u_int32_t stat; 1592 struct fwohci_dbch *dbch; 1593 struct fwohcidb_tr *db_tr; 1594 struct fw_bulkxfer *first, *prev, *chunk; 1595 struct fw_xferq *ir; 1596 1597 dbch = &sc->ir[dmach]; 1598 ir = &dbch->xferq; 1599 1600 if ((ir->flag & FWXFERQ_RUNNING) == 0) { 1601 tag = (ir->flag >> 6) & 3; 1602 ich = ir->flag & 0x3f; 1603 OWRITE(sc, OHCI_IRMATCH(dmach), tagbit[tag] | ich); 1604 1605 ir->queued = 0; 1606 dbch->ndb = ir->bnpacket * ir->bnchunk; 1607 dbch->ndesc = 2; 1608 fwohci_db_init(sc, dbch); 1609 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1610 return ENOMEM; 1611 err = fwohci_rx_enable(sc, dbch); 1612 } 1613 if(err) 1614 return err; 1615 1616 first = STAILQ_FIRST(&ir->stfree); 1617 if (first == NULL) { 1618 device_printf(fc->dev, "IR DMA no free chunk\n"); 1619 return 0; 1620 } 1621 1622 ldesc = dbch->ndesc - 1; 1623 crit_enter(); 1624 prev = STAILQ_LAST(&ir->stdma, fw_bulkxfer, link); 1625 while ((chunk = STAILQ_FIRST(&ir->stfree)) != NULL) { 1626 struct fwohcidb *db; 1627 1628 #if 1 /* XXX for if_fwe */ 1629 if (chunk->mbuf != NULL) { 1630 db_tr = (struct fwohcidb_tr *)(chunk->start); 1631 db_tr->dbcnt = 1; 1632 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 1633 chunk->mbuf, fwohci_execute_db2, db_tr, 1634 /* flags */0); 1635 FWOHCI_DMA_SET(db_tr->db[1].db.desc.cmd, 1636 OHCI_UPDATE | OHCI_INPUT_LAST | 1637 OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 1638 } 1639 #endif 1640 db = ((struct fwohcidb_tr *)(chunk->end))->db; 1641 FWOHCI_DMA_WRITE(db[ldesc].db.desc.res, 0); 1642 FWOHCI_DMA_CLEAR(db[ldesc].db.desc.depend, 0xf); 1643 if (prev != NULL) { 1644 db = ((struct fwohcidb_tr *)(prev->end))->db; 1645 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1646 } 1647 STAILQ_REMOVE_HEAD(&ir->stfree, link); 1648 STAILQ_INSERT_TAIL(&ir->stdma, chunk, link); 1649 prev = chunk; 1650 } 1651 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1652 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1653 crit_exit(); 1654 stat = OREAD(sc, OHCI_IRCTL(dmach)); 1655 if (stat & OHCI_CNTL_DMA_ACTIVE) 1656 return 0; 1657 if (stat & OHCI_CNTL_DMA_RUN) { 1658 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1659 device_printf(sc->fc.dev, "IR DMA overrun (0x%08x)\n", stat); 1660 } 1661 1662 if (firewire_debug) 1663 kprintf("start IR DMA 0x%x\n", stat); 1664 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1665 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1666 OWRITE(sc, OHCI_IR_MASK, 1 << dmach); 1667 OWRITE(sc, OHCI_IRCTLCLR(dmach), 0xf0000000); 1668 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_ISOHDR); 1669 OWRITE(sc, OHCI_IRCMD(dmach), 1670 ((struct fwohcidb_tr *)(first->start))->bus_addr 1671 | dbch->ndesc); 1672 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_DMA_RUN); 1673 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IR); 1674 #if 0 1675 dump_db(sc, IRX_CH + dmach); 1676 #endif 1677 return err; 1678 } 1679 1680 int 1681 fwohci_stop(struct fwohci_softc *sc, device_t dev) 1682 { 1683 u_int i; 1684 1685 /* Now stopping all DMA channel */ 1686 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 1687 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 1688 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1689 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1690 1691 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 1692 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 1693 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 1694 } 1695 1696 /* FLUSH FIFO and reset Transmitter/Reciever */ 1697 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 1698 1699 /* Stop interrupt */ 1700 OWRITE(sc, FWOHCI_INTMASKCLR, 1701 OHCI_INT_EN | OHCI_INT_ERR | OHCI_INT_PHY_SID 1702 | OHCI_INT_PHY_INT 1703 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 1704 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 1705 | OHCI_INT_DMA_ARRQ | OHCI_INT_DMA_ARRS 1706 | OHCI_INT_PHY_BUS_R); 1707 1708 if (sc->fc.arq != NULL && sc->fc.arq->maxq > 0) 1709 fw_drain_txq(&sc->fc); 1710 1711 /* XXX Link down? Bus reset? */ 1712 return 0; 1713 } 1714 1715 int 1716 fwohci_resume(struct fwohci_softc *sc, device_t dev) 1717 { 1718 int i; 1719 struct fw_xferq *ir; 1720 struct fw_bulkxfer *chunk; 1721 1722 fwohci_reset(sc, dev); 1723 /* XXX resume isochronus receive automatically. (how about TX?) */ 1724 for(i = 0; i < sc->fc.nisodma; i ++) { 1725 ir = &sc->ir[i].xferq; 1726 if((ir->flag & FWXFERQ_RUNNING) != 0) { 1727 device_printf(sc->fc.dev, 1728 "resume iso receive ch: %d\n", i); 1729 ir->flag &= ~FWXFERQ_RUNNING; 1730 /* requeue stdma to stfree */ 1731 while((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 1732 STAILQ_REMOVE_HEAD(&ir->stdma, link); 1733 STAILQ_INSERT_TAIL(&ir->stfree, chunk, link); 1734 } 1735 sc->fc.irx_enable(&sc->fc, i); 1736 } 1737 } 1738 1739 bus_generic_resume(dev); 1740 sc->fc.ibr(&sc->fc); 1741 return 0; 1742 } 1743 1744 #define ACK_ALL 1745 static void 1746 fwohci_intr_body(struct fwohci_softc *sc, u_int32_t stat, int count) 1747 { 1748 u_int32_t irstat, itstat; 1749 u_int i; 1750 struct firewire_comm *fc = (struct firewire_comm *)sc; 1751 1752 #ifdef OHCI_DEBUG 1753 if(stat & OREAD(sc, FWOHCI_INTMASK)) 1754 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", 1755 stat & OHCI_INT_EN ? "DMA_EN ":"", 1756 stat & OHCI_INT_PHY_REG ? "PHY_REG ":"", 1757 stat & OHCI_INT_CYC_LONG ? "CYC_LONG ":"", 1758 stat & OHCI_INT_ERR ? "INT_ERR ":"", 1759 stat & OHCI_INT_CYC_ERR ? "CYC_ERR ":"", 1760 stat & OHCI_INT_CYC_LOST ? "CYC_LOST ":"", 1761 stat & OHCI_INT_CYC_64SECOND ? "CYC_64SECOND ":"", 1762 stat & OHCI_INT_CYC_START ? "CYC_START ":"", 1763 stat & OHCI_INT_PHY_INT ? "PHY_INT ":"", 1764 stat & OHCI_INT_PHY_BUS_R ? "BUS_RESET ":"", 1765 stat & OHCI_INT_PHY_SID ? "SID ":"", 1766 stat & OHCI_INT_LR_ERR ? "DMA_LR_ERR ":"", 1767 stat & OHCI_INT_PW_ERR ? "DMA_PW_ERR ":"", 1768 stat & OHCI_INT_DMA_IR ? "DMA_IR ":"", 1769 stat & OHCI_INT_DMA_IT ? "DMA_IT " :"", 1770 stat & OHCI_INT_DMA_PRRS ? "DMA_PRRS " :"", 1771 stat & OHCI_INT_DMA_PRRQ ? "DMA_PRRQ " :"", 1772 stat & OHCI_INT_DMA_ARRS ? "DMA_ARRS " :"", 1773 stat & OHCI_INT_DMA_ARRQ ? "DMA_ARRQ " :"", 1774 stat & OHCI_INT_DMA_ATRS ? "DMA_ATRS " :"", 1775 stat & OHCI_INT_DMA_ATRQ ? "DMA_ATRQ " :"", 1776 stat, OREAD(sc, FWOHCI_INTMASK) 1777 ); 1778 #endif 1779 /* Bus reset */ 1780 if(stat & OHCI_INT_PHY_BUS_R ){ 1781 if (fc->status == FWBUSRESET) 1782 goto busresetout; 1783 /* Disable bus reset interrupt until sid recv. */ 1784 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_BUS_R); 1785 1786 device_printf(fc->dev, "BUS reset\n"); 1787 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_CYC_LOST); 1788 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCSRC); 1789 1790 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1791 sc->atrq.xferq.flag &= ~FWXFERQ_RUNNING; 1792 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1793 sc->atrs.xferq.flag &= ~FWXFERQ_RUNNING; 1794 1795 #ifndef ACK_ALL 1796 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_BUS_R); 1797 #endif 1798 fw_busreset(fc); 1799 OWRITE(sc, OHCI_CROMHDR, ntohl(sc->fc.config_rom[0])); 1800 OWRITE(sc, OHCI_BUS_OPT, ntohl(sc->fc.config_rom[2])); 1801 } 1802 busresetout: 1803 if((stat & OHCI_INT_DMA_IR )){ 1804 #ifndef ACK_ALL 1805 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IR); 1806 #endif 1807 irstat = atomic_readandclear_int(&sc->irstat); 1808 for(i = 0; i < fc->nisodma ; i++){ 1809 struct fwohci_dbch *dbch; 1810 1811 if((irstat & (1 << i)) != 0){ 1812 dbch = &sc->ir[i]; 1813 if ((dbch->xferq.flag & FWXFERQ_OPEN) == 0) { 1814 device_printf(sc->fc.dev, 1815 "dma(%d) not active\n", i); 1816 continue; 1817 } 1818 fwohci_rbuf_update(sc, i); 1819 } 1820 } 1821 } 1822 if((stat & OHCI_INT_DMA_IT )){ 1823 #ifndef ACK_ALL 1824 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IT); 1825 #endif 1826 itstat = atomic_readandclear_int(&sc->itstat); 1827 for(i = 0; i < fc->nisodma ; i++){ 1828 if((itstat & (1 << i)) != 0){ 1829 fwohci_tbuf_update(sc, i); 1830 } 1831 } 1832 } 1833 if((stat & OHCI_INT_DMA_PRRS )){ 1834 #ifndef ACK_ALL 1835 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRS); 1836 #endif 1837 #if 0 1838 dump_dma(sc, ARRS_CH); 1839 dump_db(sc, ARRS_CH); 1840 #endif 1841 fwohci_arcv(sc, &sc->arrs, count); 1842 } 1843 if((stat & OHCI_INT_DMA_PRRQ )){ 1844 #ifndef ACK_ALL 1845 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_PRRQ); 1846 #endif 1847 #if 0 1848 dump_dma(sc, ARRQ_CH); 1849 dump_db(sc, ARRQ_CH); 1850 #endif 1851 fwohci_arcv(sc, &sc->arrq, count); 1852 } 1853 if(stat & OHCI_INT_PHY_SID){ 1854 u_int32_t *buf, node_id; 1855 int plen; 1856 1857 #ifndef ACK_ALL 1858 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_SID); 1859 #endif 1860 /* Enable bus reset interrupt */ 1861 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_PHY_BUS_R); 1862 /* Allow async. request to us */ 1863 OWRITE(sc, OHCI_AREQHI, 1 << 31); 1864 /* XXX insecure ?? */ 1865 OWRITE(sc, OHCI_PREQHI, 0x7fffffff); 1866 OWRITE(sc, OHCI_PREQLO, 0xffffffff); 1867 OWRITE(sc, OHCI_PREQUPPER, 0x10000); 1868 /* Set ATRetries register */ 1869 OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff); 1870 /* 1871 ** Checking whether the node is root or not. If root, turn on 1872 ** cycle master. 1873 */ 1874 node_id = OREAD(sc, FWOHCI_NODEID); 1875 plen = OREAD(sc, OHCI_SID_CNT); 1876 1877 device_printf(fc->dev, "node_id=0x%08x, gen=%d, ", 1878 node_id, (plen >> 16) & 0xff); 1879 if (!(node_id & OHCI_NODE_VALID)) { 1880 kprintf("Bus reset failure\n"); 1881 goto sidout; 1882 } 1883 if (node_id & OHCI_NODE_ROOT) { 1884 kprintf("CYCLEMASTER mode\n"); 1885 OWRITE(sc, OHCI_LNKCTL, 1886 OHCI_CNTL_CYCMTR | OHCI_CNTL_CYCTIMER); 1887 } else { 1888 kprintf("non CYCLEMASTER mode\n"); 1889 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCMTR); 1890 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_CYCTIMER); 1891 } 1892 fc->nodeid = node_id & 0x3f; 1893 1894 if (plen & OHCI_SID_ERR) { 1895 device_printf(fc->dev, "SID Error\n"); 1896 goto sidout; 1897 } 1898 plen &= OHCI_SID_CNT_MASK; 1899 if (plen < 4 || plen > OHCI_SIDSIZE) { 1900 device_printf(fc->dev, "invalid SID len = %d\n", plen); 1901 goto sidout; 1902 } 1903 plen -= 4; /* chop control info */ 1904 buf = (u_int32_t *)kmalloc(OHCI_SIDSIZE, M_FW, M_INTWAIT); 1905 if (buf == NULL) { 1906 device_printf(fc->dev, "malloc failed\n"); 1907 goto sidout; 1908 } 1909 for (i = 0; i < plen / 4; i ++) 1910 buf[i] = FWOHCI_DMA_READ(sc->sid_buf[i+1]); 1911 #if 1 1912 /* pending all pre-bus_reset packets */ 1913 fwohci_txd(sc, &sc->atrq); 1914 fwohci_txd(sc, &sc->atrs); 1915 fwohci_arcv(sc, &sc->arrs, -1); 1916 fwohci_arcv(sc, &sc->arrq, -1); 1917 fw_drain_txq(fc); 1918 #endif 1919 fw_sidrcv(fc, buf, plen); 1920 kfree(buf, M_FW); 1921 } 1922 sidout: 1923 if((stat & OHCI_INT_DMA_ATRQ )){ 1924 #ifndef ACK_ALL 1925 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRQ); 1926 #endif 1927 fwohci_txd(sc, &(sc->atrq)); 1928 } 1929 if((stat & OHCI_INT_DMA_ATRS )){ 1930 #ifndef ACK_ALL 1931 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRS); 1932 #endif 1933 fwohci_txd(sc, &(sc->atrs)); 1934 } 1935 if((stat & OHCI_INT_PW_ERR )){ 1936 #ifndef ACK_ALL 1937 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PW_ERR); 1938 #endif 1939 /* permanently mask unsupported interrupt source */ 1940 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PW_ERR); 1941 device_printf(fc->dev, "posted write error\n"); 1942 } 1943 if((stat & OHCI_INT_ERR )){ 1944 #ifndef ACK_ALL 1945 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_ERR); 1946 #endif 1947 /* permanently mask unsupported interrupt source */ 1948 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_ERR); 1949 device_printf(fc->dev, "unrecoverable error\n"); 1950 } 1951 if((stat & OHCI_INT_PHY_INT)) { 1952 #ifndef ACK_ALL 1953 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_INT); 1954 #endif 1955 /* permanently mask unsupported interrupt source */ 1956 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_INT); 1957 /*device_printf(fc->dev, "phy int\n");*/ 1958 } 1959 1960 return; 1961 } 1962 1963 #if FWOHCI_TASKQUEUE 1964 static void 1965 fwohci_complete(void *arg, int pending) 1966 { 1967 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 1968 u_int32_t stat; 1969 1970 again: 1971 stat = atomic_readandclear_int(&sc->intstat); 1972 if (stat) 1973 fwohci_intr_body(sc, stat, -1); 1974 else 1975 return; 1976 goto again; 1977 } 1978 #endif 1979 1980 static u_int32_t 1981 fwochi_check_stat(struct fwohci_softc *sc) 1982 { 1983 u_int32_t stat, irstat, itstat; 1984 1985 stat = OREAD(sc, FWOHCI_INTSTAT); 1986 if (stat == 0xffffffff) { 1987 device_printf(sc->fc.dev, 1988 "device physically ejected?\n"); 1989 return(stat); 1990 } 1991 #ifdef ACK_ALL 1992 if (stat) 1993 OWRITE(sc, FWOHCI_INTSTATCLR, stat); 1994 #endif 1995 if (stat & OHCI_INT_DMA_IR) { 1996 irstat = OREAD(sc, OHCI_IR_STAT); 1997 OWRITE(sc, OHCI_IR_STATCLR, irstat); 1998 atomic_set_int(&sc->irstat, irstat); 1999 } 2000 if (stat & OHCI_INT_DMA_IT) { 2001 itstat = OREAD(sc, OHCI_IT_STAT); 2002 OWRITE(sc, OHCI_IT_STATCLR, itstat); 2003 atomic_set_int(&sc->itstat, itstat); 2004 } 2005 return(stat); 2006 } 2007 2008 void 2009 fwohci_intr(void *arg) 2010 { 2011 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2012 u_int32_t stat; 2013 #if !FWOHCI_TASKQUEUE 2014 u_int32_t bus_reset = 0; 2015 #endif 2016 2017 if (!(sc->intmask & OHCI_INT_EN)) { 2018 /* polling mode */ 2019 return; 2020 } 2021 2022 #if !FWOHCI_TASKQUEUE 2023 again: 2024 #endif 2025 stat = fwochi_check_stat(sc); 2026 if (stat == 0 || stat == 0xffffffff) 2027 return; 2028 #if FWOHCI_TASKQUEUE 2029 atomic_set_int(&sc->intstat, stat); 2030 /* XXX mask bus reset intr. during bus reset phase */ 2031 if (stat) 2032 taskqueue_enqueue(taskqueue_swi_giant, &sc->fwohci_task_complete); 2033 #else 2034 /* We cannot clear bus reset event during bus reset phase */ 2035 if ((stat & ~bus_reset) == 0) 2036 return; 2037 bus_reset = stat & OHCI_INT_PHY_BUS_R; 2038 fwohci_intr_body(sc, stat, -1); 2039 goto again; 2040 #endif 2041 } 2042 2043 void 2044 fwohci_poll(struct firewire_comm *fc, int quick, int count) 2045 { 2046 u_int32_t stat; 2047 struct fwohci_softc *sc; 2048 2049 2050 sc = (struct fwohci_softc *)fc; 2051 stat = OHCI_INT_DMA_IR | OHCI_INT_DMA_IT | 2052 OHCI_INT_DMA_PRRS | OHCI_INT_DMA_PRRQ | 2053 OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS; 2054 #if 0 2055 if (!quick) { 2056 #else 2057 if (1) { 2058 #endif 2059 stat = fwochi_check_stat(sc); 2060 if (stat == 0 || stat == 0xffffffff) 2061 return; 2062 } 2063 crit_enter(); 2064 fwohci_intr_body(sc, stat, count); 2065 crit_exit(); 2066 } 2067 2068 static void 2069 fwohci_set_intr(struct firewire_comm *fc, int enable) 2070 { 2071 struct fwohci_softc *sc; 2072 2073 sc = (struct fwohci_softc *)fc; 2074 if (bootverbose) 2075 device_printf(sc->fc.dev, "fwohci_set_intr: %d\n", enable); 2076 if (enable) { 2077 sc->intmask |= OHCI_INT_EN; 2078 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_EN); 2079 } else { 2080 sc->intmask &= ~OHCI_INT_EN; 2081 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_EN); 2082 } 2083 } 2084 2085 static void 2086 fwohci_tbuf_update(struct fwohci_softc *sc, int dmach) 2087 { 2088 struct firewire_comm *fc = &sc->fc; 2089 struct fwohcidb *db; 2090 struct fw_bulkxfer *chunk; 2091 struct fw_xferq *it; 2092 u_int32_t stat, count; 2093 int w=0, ldesc; 2094 2095 it = fc->it[dmach]; 2096 ldesc = sc->it[dmach].ndesc - 1; 2097 crit_enter(); /* unnecessary? */ 2098 fwdma_sync_multiseg_all(sc->it[dmach].am, BUS_DMASYNC_POSTREAD); 2099 if (firewire_debug) 2100 dump_db(sc, ITX_CH + dmach); 2101 while ((chunk = STAILQ_FIRST(&it->stdma)) != NULL) { 2102 db = ((struct fwohcidb_tr *)(chunk->end))->db; 2103 stat = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2104 >> OHCI_STATUS_SHIFT; 2105 db = ((struct fwohcidb_tr *)(chunk->start))->db; 2106 /* timestamp */ 2107 count = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2108 & OHCI_COUNT_MASK; 2109 if (stat == 0) 2110 break; 2111 STAILQ_REMOVE_HEAD(&it->stdma, link); 2112 switch (stat & FWOHCIEV_MASK){ 2113 case FWOHCIEV_ACKCOMPL: 2114 #if 0 2115 device_printf(fc->dev, "0x%08x\n", count); 2116 #endif 2117 break; 2118 default: 2119 device_printf(fc->dev, 2120 "Isochronous transmit err %02x(%s)\n", 2121 stat, fwohcicode[stat & 0x1f]); 2122 } 2123 STAILQ_INSERT_TAIL(&it->stfree, chunk, link); 2124 w++; 2125 } 2126 crit_exit(); 2127 if (w) 2128 wakeup(it); 2129 } 2130 2131 static void 2132 fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) 2133 { 2134 struct firewire_comm *fc = &sc->fc; 2135 struct fwohcidb_tr *db_tr; 2136 struct fw_bulkxfer *chunk; 2137 struct fw_xferq *ir; 2138 u_int32_t stat; 2139 int w=0, ldesc; 2140 2141 ir = fc->ir[dmach]; 2142 ldesc = sc->ir[dmach].ndesc - 1; 2143 #if 0 2144 dump_db(sc, dmach); 2145 #endif 2146 crit_enter(); 2147 fwdma_sync_multiseg_all(sc->ir[dmach].am, BUS_DMASYNC_POSTREAD); 2148 while ((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 2149 db_tr = (struct fwohcidb_tr *)chunk->end; 2150 stat = FWOHCI_DMA_READ(db_tr->db[ldesc].db.desc.res) 2151 >> OHCI_STATUS_SHIFT; 2152 if (stat == 0) 2153 break; 2154 2155 if (chunk->mbuf != NULL) { 2156 bus_dmamap_sync(sc->ir[dmach].dmat, db_tr->dma_map, 2157 BUS_DMASYNC_POSTREAD); 2158 bus_dmamap_unload(sc->ir[dmach].dmat, db_tr->dma_map); 2159 } else if (ir->buf != NULL) { 2160 fwdma_sync_multiseg(ir->buf, chunk->poffset, 2161 ir->bnpacket, BUS_DMASYNC_POSTREAD); 2162 } else { 2163 /* XXX */ 2164 kprintf("fwohci_rbuf_update: this shouldn't happen\n"); 2165 } 2166 2167 STAILQ_REMOVE_HEAD(&ir->stdma, link); 2168 STAILQ_INSERT_TAIL(&ir->stvalid, chunk, link); 2169 switch (stat & FWOHCIEV_MASK) { 2170 case FWOHCIEV_ACKCOMPL: 2171 chunk->resp = 0; 2172 break; 2173 default: 2174 chunk->resp = EINVAL; 2175 device_printf(fc->dev, 2176 "Isochronous receive err %02x(%s)\n", 2177 stat, fwohcicode[stat & 0x1f]); 2178 } 2179 w++; 2180 } 2181 crit_exit(); 2182 if (w) { 2183 if (ir->flag & FWXFERQ_HANDLER) 2184 ir->hand(ir); 2185 else 2186 wakeup(ir); 2187 } 2188 } 2189 2190 static void 2191 dump_dma(struct fwohci_softc *sc, u_int32_t ch) 2192 { 2193 u_int32_t off, cntl, stat, cmd, match; 2194 2195 if(ch == 0){ 2196 off = OHCI_ATQOFF; 2197 }else if(ch == 1){ 2198 off = OHCI_ATSOFF; 2199 }else if(ch == 2){ 2200 off = OHCI_ARQOFF; 2201 }else if(ch == 3){ 2202 off = OHCI_ARSOFF; 2203 }else if(ch < IRX_CH){ 2204 off = OHCI_ITCTL(ch - ITX_CH); 2205 }else{ 2206 off = OHCI_IRCTL(ch - IRX_CH); 2207 } 2208 cntl = stat = OREAD(sc, off); 2209 cmd = OREAD(sc, off + 0xc); 2210 match = OREAD(sc, off + 0x10); 2211 2212 device_printf(sc->fc.dev, "ch %1x cntl:0x%08x cmd:0x%08x match:0x%08x\n", 2213 ch, 2214 cntl, 2215 cmd, 2216 match); 2217 stat &= 0xffff ; 2218 if (stat) { 2219 device_printf(sc->fc.dev, "dma %d ch:%s%s%s%s%s%s %s(%x)\n", 2220 ch, 2221 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2222 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2223 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2224 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2225 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2226 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2227 fwohcicode[stat & 0x1f], 2228 stat & 0x1f 2229 ); 2230 }else{ 2231 device_printf(sc->fc.dev, "dma %d ch: Nostat\n", ch); 2232 } 2233 } 2234 2235 static void 2236 dump_db(struct fwohci_softc *sc, u_int32_t ch) 2237 { 2238 struct fwohci_dbch *dbch; 2239 struct fwohcidb_tr *cp = NULL, *pp, *np = NULL; 2240 struct fwohcidb *curr = NULL; 2241 #if 0 2242 struct fwohcidb *prev, *next = NULL; 2243 #endif 2244 int idb, jdb; 2245 u_int32_t cmd, off; 2246 if(ch == 0){ 2247 off = OHCI_ATQOFF; 2248 dbch = &sc->atrq; 2249 }else if(ch == 1){ 2250 off = OHCI_ATSOFF; 2251 dbch = &sc->atrs; 2252 }else if(ch == 2){ 2253 off = OHCI_ARQOFF; 2254 dbch = &sc->arrq; 2255 }else if(ch == 3){ 2256 off = OHCI_ARSOFF; 2257 dbch = &sc->arrs; 2258 }else if(ch < IRX_CH){ 2259 off = OHCI_ITCTL(ch - ITX_CH); 2260 dbch = &sc->it[ch - ITX_CH]; 2261 }else { 2262 off = OHCI_IRCTL(ch - IRX_CH); 2263 dbch = &sc->ir[ch - IRX_CH]; 2264 } 2265 cmd = OREAD(sc, off + 0xc); 2266 2267 if( dbch->ndb == 0 ){ 2268 device_printf(sc->fc.dev, "No DB is attached ch=%d\n", ch); 2269 return; 2270 } 2271 pp = dbch->top; 2272 #if 0 2273 prev = pp->db; 2274 #endif 2275 for(idb = 0 ; idb < dbch->ndb ; idb ++ ){ 2276 if(pp == NULL){ 2277 curr = NULL; 2278 goto outdb; 2279 } 2280 cp = STAILQ_NEXT(pp, link); 2281 if(cp == NULL){ 2282 curr = NULL; 2283 goto outdb; 2284 } 2285 np = STAILQ_NEXT(cp, link); 2286 for(jdb = 0 ; jdb < dbch->ndesc ; jdb ++ ){ 2287 if ((cmd & 0xfffffff0) == cp->bus_addr) { 2288 curr = cp->db; 2289 #if 0 2290 if(np != NULL){ 2291 next = np->db; 2292 }else{ 2293 next = NULL; 2294 } 2295 #endif 2296 goto outdb; 2297 } 2298 } 2299 pp = STAILQ_NEXT(pp, link); 2300 #if 0 2301 prev = pp->db; 2302 #endif 2303 } 2304 outdb: 2305 if( curr != NULL){ 2306 #if 0 2307 kprintf("Prev DB %d\n", ch); 2308 print_db(pp, prev, ch, dbch->ndesc); 2309 #endif 2310 kprintf("Current DB %d\n", ch); 2311 print_db(cp, curr, ch, dbch->ndesc); 2312 #if 0 2313 kprintf("Next DB %d\n", ch); 2314 print_db(np, next, ch, dbch->ndesc); 2315 #endif 2316 }else{ 2317 kprintf("dbdump err ch = %d cmd = 0x%08x\n", ch, cmd); 2318 } 2319 return; 2320 } 2321 2322 static void 2323 print_db(struct fwohcidb_tr *db_tr, struct fwohcidb *db, 2324 u_int32_t ch, u_int32_t max) 2325 { 2326 fwohcireg_t stat; 2327 int i, key; 2328 u_int32_t cmd, res; 2329 2330 if(db == NULL){ 2331 kprintf("No Descriptor is found\n"); 2332 return; 2333 } 2334 2335 kprintf("ch = %d\n%8s %s %s %s %s %4s %8s %8s %4s:%4s\n", 2336 ch, 2337 "Current", 2338 "OP ", 2339 "KEY", 2340 "INT", 2341 "BR ", 2342 "len", 2343 "Addr", 2344 "Depend", 2345 "Stat", 2346 "Cnt"); 2347 for( i = 0 ; i <= max ; i ++){ 2348 cmd = FWOHCI_DMA_READ(db[i].db.desc.cmd); 2349 res = FWOHCI_DMA_READ(db[i].db.desc.res); 2350 key = cmd & OHCI_KEY_MASK; 2351 stat = res >> OHCI_STATUS_SHIFT; 2352 kprintf("%08jx %s %s %s %s %5d %08lx %08lx %04x:%04x", 2353 (uintmax_t)db_tr->bus_addr, 2354 dbcode[(cmd >> 28) & 0xf], 2355 dbkey[(cmd >> 24) & 0x7], 2356 dbcond[(cmd >> 20) & 0x3], 2357 dbcond[(cmd >> 18) & 0x3], 2358 cmd & OHCI_COUNT_MASK, 2359 (u_long)FWOHCI_DMA_READ(db[i].db.desc.addr), 2360 (u_long)FWOHCI_DMA_READ(db[i].db.desc.depend), 2361 (u_int)stat, 2362 (u_int)(res & OHCI_COUNT_MASK)); 2363 if(stat & 0xff00){ 2364 kprintf(" %s%s%s%s%s%s %s(%x)\n", 2365 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2366 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2367 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2368 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2369 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2370 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2371 fwohcicode[stat & 0x1f], 2372 stat & 0x1f 2373 ); 2374 }else{ 2375 kprintf(" Nostat\n"); 2376 } 2377 if(key == OHCI_KEY_ST2 ){ 2378 kprintf("0x%08x 0x%08x 0x%08x 0x%08x\n", 2379 FWOHCI_DMA_READ(db[i+1].db.immed[0]), 2380 FWOHCI_DMA_READ(db[i+1].db.immed[1]), 2381 FWOHCI_DMA_READ(db[i+1].db.immed[2]), 2382 FWOHCI_DMA_READ(db[i+1].db.immed[3])); 2383 } 2384 if(key == OHCI_KEY_DEVICE){ 2385 return; 2386 } 2387 if((cmd & OHCI_BRANCH_MASK) 2388 == OHCI_BRANCH_ALWAYS){ 2389 return; 2390 } 2391 if((cmd & OHCI_CMD_MASK) 2392 == OHCI_OUTPUT_LAST){ 2393 return; 2394 } 2395 if((cmd & OHCI_CMD_MASK) 2396 == OHCI_INPUT_LAST){ 2397 return; 2398 } 2399 if(key == OHCI_KEY_ST2 ){ 2400 i++; 2401 } 2402 } 2403 return; 2404 } 2405 2406 static void 2407 fwohci_ibr(struct firewire_comm *fc) 2408 { 2409 struct fwohci_softc *sc; 2410 u_int32_t fun; 2411 2412 device_printf(fc->dev, "Initiate bus reset\n"); 2413 sc = (struct fwohci_softc *)fc; 2414 2415 /* 2416 * Set root hold-off bit so that non cyclemaster capable node 2417 * shouldn't became the root node. 2418 */ 2419 #if 1 2420 fun = fwphy_rddata(sc, FW_PHY_IBR_REG); 2421 fun |= FW_PHY_IBR | FW_PHY_RHB; 2422 fun = fwphy_wrdata(sc, FW_PHY_IBR_REG, fun); 2423 #else /* Short bus reset */ 2424 fun = fwphy_rddata(sc, FW_PHY_ISBR_REG); 2425 fun |= FW_PHY_ISBR | FW_PHY_RHB; 2426 fun = fwphy_wrdata(sc, FW_PHY_ISBR_REG, fun); 2427 #endif 2428 } 2429 2430 void 2431 fwohci_txbufdb(struct fwohci_softc *sc, int dmach, struct fw_bulkxfer *bulkxfer) 2432 { 2433 struct fwohcidb_tr *db_tr; 2434 #if 0 2435 struct fwohcidb_tr *fdb_tr; 2436 #endif 2437 struct fwohci_dbch *dbch; 2438 struct fwohcidb *db; 2439 struct fw_pkt *fp; 2440 struct fwohci_txpkthdr *ohcifp; 2441 unsigned short chtag; 2442 int idb; 2443 2444 dbch = &sc->it[dmach]; 2445 chtag = sc->it[dmach].xferq.flag & 0xff; 2446 2447 db_tr = (struct fwohcidb_tr *)(bulkxfer->start); 2448 #if 0 2449 fdb_tr = (struct fwohcidb_tr *)(bulkxfer->end); 2450 device_printf(sc->fc.dev, "DB %08x %08x %08x\n", bulkxfer, 2451 db_tr->bus_addr, fdb_tr->bus_addr); 2452 #endif 2453 for (idb = 0; idb < dbch->xferq.bnpacket; idb ++) { 2454 db = db_tr->db; 2455 fp = (struct fw_pkt *)db_tr->buf; 2456 ohcifp = (struct fwohci_txpkthdr *) db[1].db.immed; 2457 ohcifp->mode.ld[0] = fp->mode.ld[0]; 2458 ohcifp->mode.common.spd = 0 & 0x7; 2459 ohcifp->mode.stream.len = fp->mode.stream.len; 2460 ohcifp->mode.stream.chtag = chtag; 2461 ohcifp->mode.stream.tcode = 0xa; 2462 #if BYTE_ORDER == BIG_ENDIAN 2463 FWOHCI_DMA_WRITE(db[1].db.immed[0], db[1].db.immed[0]); 2464 FWOHCI_DMA_WRITE(db[1].db.immed[1], db[1].db.immed[1]); 2465 #endif 2466 2467 FWOHCI_DMA_CLEAR(db[2].db.desc.cmd, OHCI_COUNT_MASK); 2468 FWOHCI_DMA_SET(db[2].db.desc.cmd, fp->mode.stream.len); 2469 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2470 #if 0 /* if bulkxfer->npackets changes */ 2471 db[2].db.desc.cmd = OHCI_OUTPUT_LAST 2472 | OHCI_UPDATE 2473 | OHCI_BRANCH_ALWAYS; 2474 db[0].db.desc.depend = 2475 = db[dbch->ndesc - 1].db.desc.depend 2476 = STAILQ_NEXT(db_tr, link)->bus_addr | dbch->ndesc; 2477 #else 2478 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 2479 FWOHCI_DMA_SET(db[dbch->ndesc - 1].db.desc.depend, dbch->ndesc); 2480 #endif 2481 bulkxfer->end = (caddr_t)db_tr; 2482 db_tr = STAILQ_NEXT(db_tr, link); 2483 } 2484 db = ((struct fwohcidb_tr *)bulkxfer->end)->db; 2485 FWOHCI_DMA_CLEAR(db[0].db.desc.depend, 0xf); 2486 FWOHCI_DMA_CLEAR(db[dbch->ndesc - 1].db.desc.depend, 0xf); 2487 #if 0 /* if bulkxfer->npackets changes */ 2488 db[dbch->ndesc - 1].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2489 /* OHCI 1.1 and above */ 2490 db[0].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2491 #endif 2492 /* 2493 db_tr = (struct fwohcidb_tr *)bulkxfer->start; 2494 fdb_tr = (struct fwohcidb_tr *)bulkxfer->end; 2495 device_printf(sc->fc.dev, "DB %08x %3d %08x %08x\n", bulkxfer, bulkxfer->npacket, db_tr->bus_addr, fdb_tr->bus_addr); 2496 */ 2497 return; 2498 } 2499 2500 static int 2501 fwohci_add_tx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2502 int poffset) 2503 { 2504 struct fwohcidb *db = db_tr->db; 2505 struct fw_xferq *it; 2506 int err = 0; 2507 2508 it = &dbch->xferq; 2509 if(it->buf == NULL) { 2510 err = EINVAL; 2511 return err; 2512 } 2513 db_tr->buf = fwdma_v_addr(it->buf, poffset); 2514 db_tr->dbcnt = 3; 2515 2516 FWOHCI_DMA_WRITE(db[0].db.desc.cmd, 2517 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | 8); 2518 FWOHCI_DMA_WRITE(db[0].db.desc.addr, 0); 2519 bzero((void *)&db[1].db.immed[0], sizeof(db[1].db.immed)); 2520 FWOHCI_DMA_WRITE(db[2].db.desc.addr, 2521 fwdma_bus_addr(it->buf, poffset) + sizeof(u_int32_t)); 2522 2523 FWOHCI_DMA_WRITE(db[2].db.desc.cmd, 2524 OHCI_OUTPUT_LAST | OHCI_UPDATE | OHCI_BRANCH_ALWAYS); 2525 #if 1 2526 FWOHCI_DMA_WRITE(db[0].db.desc.res, 0); 2527 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2528 #endif 2529 return 0; 2530 } 2531 2532 static int 2533 fwohci_add_rx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2534 int poffset, struct fwdma_alloc *dummy_dma) 2535 { 2536 struct fwohcidb *db = db_tr->db; 2537 struct fw_xferq *ir; 2538 int i, ldesc; 2539 bus_addr_t dbuf[2]; 2540 int dsiz[2]; 2541 2542 ir = &dbch->xferq; 2543 if (ir->buf == NULL && (dbch->xferq.flag & FWXFERQ_EXTBUF) == 0) { 2544 db_tr->buf = fwdma_malloc_size(dbch->dmat, &db_tr->dma_map, 2545 ir->psize, &dbuf[0], BUS_DMA_NOWAIT); 2546 if (db_tr->buf == NULL) 2547 return(ENOMEM); 2548 db_tr->dbcnt = 1; 2549 dsiz[0] = ir->psize; 2550 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2551 BUS_DMASYNC_PREREAD); 2552 } else { 2553 db_tr->dbcnt = 0; 2554 if (dummy_dma != NULL) { 2555 dsiz[db_tr->dbcnt] = sizeof(u_int32_t); 2556 dbuf[db_tr->dbcnt++] = dummy_dma->bus_addr; 2557 } 2558 dsiz[db_tr->dbcnt] = ir->psize; 2559 if (ir->buf != NULL) { 2560 db_tr->buf = fwdma_v_addr(ir->buf, poffset); 2561 dbuf[db_tr->dbcnt] = fwdma_bus_addr( ir->buf, poffset); 2562 } 2563 db_tr->dbcnt++; 2564 } 2565 for(i = 0 ; i < db_tr->dbcnt ; i++){ 2566 FWOHCI_DMA_WRITE(db[i].db.desc.addr, dbuf[i]); 2567 FWOHCI_DMA_WRITE(db[i].db.desc.cmd, OHCI_INPUT_MORE | dsiz[i]); 2568 if (ir->flag & FWXFERQ_STREAM) { 2569 FWOHCI_DMA_SET(db[i].db.desc.cmd, OHCI_UPDATE); 2570 } 2571 FWOHCI_DMA_WRITE(db[i].db.desc.res, dsiz[i]); 2572 } 2573 ldesc = db_tr->dbcnt - 1; 2574 if (ir->flag & FWXFERQ_STREAM) { 2575 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_INPUT_LAST); 2576 } 2577 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_BRANCH_ALWAYS); 2578 return 0; 2579 } 2580 2581 2582 static int 2583 fwohci_arcv_swap(struct fw_pkt *fp, int len) 2584 { 2585 struct fw_pkt *fp0; 2586 u_int32_t ld0; 2587 int hlen; 2588 #if BYTE_ORDER == BIG_ENDIAN 2589 int slen, i; 2590 #endif 2591 2592 ld0 = FWOHCI_DMA_READ(fp->mode.ld[0]); 2593 #if 0 2594 kprintf("ld0: x%08x\n", ld0); 2595 #endif 2596 fp0 = (struct fw_pkt *)&ld0; 2597 /* determine length to swap */ 2598 switch (fp0->mode.common.tcode) { 2599 case FWTCODE_RREQQ: 2600 case FWTCODE_WRES: 2601 case FWTCODE_WREQQ: 2602 case FWTCODE_RRESQ: 2603 case FWOHCITCODE_PHY: 2604 #if BYTE_ORDER == BIG_ENDIAN 2605 slen = 12; 2606 break; 2607 #endif 2608 case FWTCODE_RREQB: 2609 case FWTCODE_WREQB: 2610 case FWTCODE_LREQ: 2611 case FWTCODE_RRESB: 2612 case FWTCODE_LRES: 2613 #if BYTE_ORDER == BIG_ENDIAN 2614 slen = 16; 2615 break; 2616 #endif 2617 default: 2618 kprintf("Unknown tcode %d\n", fp0->mode.common.tcode); 2619 return(0); 2620 } 2621 hlen = tinfo[fp0->mode.common.tcode].hdr_len; 2622 if (hlen > len) { 2623 if (firewire_debug) 2624 kprintf("split header\n"); 2625 return(-hlen); 2626 } 2627 #if BYTE_ORDER == BIG_ENDIAN 2628 for(i = 0; i < slen/4; i ++) 2629 fp->mode.ld[i] = FWOHCI_DMA_READ(fp->mode.ld[i]); 2630 #endif 2631 return(hlen); 2632 } 2633 2634 static int 2635 fwohci_get_plen(struct fwohci_softc *sc, struct fwohci_dbch *dbch, struct fw_pkt *fp) 2636 { 2637 struct tcode_info *info; 2638 int r; 2639 2640 info = &tinfo[fp->mode.common.tcode]; 2641 r = info->hdr_len + sizeof(u_int32_t); 2642 if ((info->flag & FWTI_BLOCK_ASY) != 0) 2643 r += roundup2(fp->mode.wreqb.len, sizeof(u_int32_t)); 2644 2645 if (r == sizeof(u_int32_t)) 2646 /* XXX */ 2647 device_printf(sc->fc.dev, "Unknown tcode %d\n", 2648 fp->mode.common.tcode); 2649 2650 if (r > dbch->xferq.psize) { 2651 device_printf(sc->fc.dev, "Invalid packet length %d\n", r); 2652 /* panic ? */ 2653 } 2654 2655 return r; 2656 } 2657 2658 static void 2659 fwohci_arcv_free_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr) 2660 { 2661 struct fwohcidb *db = &db_tr->db[0]; 2662 2663 FWOHCI_DMA_CLEAR(db->db.desc.depend, 0xf); 2664 FWOHCI_DMA_WRITE(db->db.desc.res, dbch->xferq.psize); 2665 FWOHCI_DMA_SET(dbch->bottom->db[0].db.desc.depend, 1); 2666 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 2667 dbch->bottom = db_tr; 2668 } 2669 2670 static void 2671 fwohci_arcv(struct fwohci_softc *sc, struct fwohci_dbch *dbch, int count) 2672 { 2673 struct fwohcidb_tr *db_tr; 2674 struct iovec vec[2]; 2675 struct fw_pkt pktbuf; 2676 int nvec; 2677 struct fw_pkt *fp; 2678 u_int8_t *ld; 2679 u_int32_t stat, status; 2680 u_int spd; 2681 int len, plen, hlen, pcnt, offset; 2682 caddr_t buf; 2683 int resCount; 2684 2685 if (&sc->arrq != dbch && &sc->arrs != dbch) 2686 return; 2687 2688 crit_enter(); 2689 db_tr = dbch->top; 2690 pcnt = 0; 2691 /* XXX we cannot handle a packet which lies in more than two buf */ 2692 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 2693 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 2694 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) >> OHCI_STATUS_SHIFT; 2695 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) & OHCI_COUNT_MASK; 2696 #if 0 2697 kprintf("status 0x%04x, resCount 0x%04x\n", status, resCount); 2698 #endif 2699 while (status & OHCI_CNTL_DMA_ACTIVE) { 2700 len = dbch->xferq.psize - resCount; 2701 ld = (u_int8_t *)db_tr->buf; 2702 if (dbch->pdb_tr == NULL) { 2703 len -= dbch->buf_offset; 2704 ld += dbch->buf_offset; 2705 } 2706 if (len > 0) 2707 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2708 BUS_DMASYNC_POSTREAD); 2709 while (len > 0 ) { 2710 if (count >= 0 && count-- == 0) 2711 goto out; 2712 if(dbch->pdb_tr != NULL){ 2713 /* we have a fragment in previous buffer */ 2714 int rlen; 2715 2716 offset = dbch->buf_offset; 2717 if (offset < 0) 2718 offset = - offset; 2719 buf = dbch->pdb_tr->buf + offset; 2720 rlen = dbch->xferq.psize - offset; 2721 if (firewire_debug) 2722 kprintf("rlen=%d, offset=%d\n", 2723 rlen, dbch->buf_offset); 2724 if (dbch->buf_offset < 0) { 2725 /* split in header, pull up */ 2726 char *p; 2727 2728 p = (char *)&pktbuf; 2729 bcopy(buf, p, rlen); 2730 p += rlen; 2731 /* this must be too long but harmless */ 2732 rlen = sizeof(pktbuf) - rlen; 2733 if (rlen < 0) 2734 kprintf("why rlen < 0\n"); 2735 bcopy(db_tr->buf, p, rlen); 2736 ld += rlen; 2737 len -= rlen; 2738 hlen = fwohci_arcv_swap(&pktbuf, sizeof(pktbuf)); 2739 if (hlen < 0) { 2740 kprintf("hlen < 0 shouldn't happen"); 2741 } 2742 offset = sizeof(pktbuf); 2743 vec[0].iov_base = (char *)&pktbuf; 2744 vec[0].iov_len = offset; 2745 } else { 2746 /* split in payload */ 2747 offset = rlen; 2748 vec[0].iov_base = buf; 2749 vec[0].iov_len = rlen; 2750 } 2751 fp=(struct fw_pkt *)vec[0].iov_base; 2752 nvec = 1; 2753 } else { 2754 /* no fragment in previous buffer */ 2755 fp=(struct fw_pkt *)ld; 2756 hlen = fwohci_arcv_swap(fp, len); 2757 if (hlen == 0) 2758 /* XXX need reset */ 2759 goto out; 2760 if (hlen < 0) { 2761 dbch->pdb_tr = db_tr; 2762 dbch->buf_offset = - dbch->buf_offset; 2763 /* sanity check */ 2764 if (resCount != 0) 2765 kprintf("resCount = %d !?\n", 2766 resCount); 2767 /* XXX clear pdb_tr */ 2768 goto out; 2769 } 2770 offset = 0; 2771 nvec = 0; 2772 } 2773 plen = fwohci_get_plen(sc, dbch, fp) - offset; 2774 if (plen < 0) { 2775 /* minimum header size + trailer 2776 = sizeof(fw_pkt) so this shouldn't happens */ 2777 kprintf("plen(%d) is negative! offset=%d\n", 2778 plen, offset); 2779 /* XXX clear pdb_tr */ 2780 goto out; 2781 } 2782 if (plen > 0) { 2783 len -= plen; 2784 if (len < 0) { 2785 dbch->pdb_tr = db_tr; 2786 if (firewire_debug) 2787 kprintf("split payload\n"); 2788 /* sanity check */ 2789 if (resCount != 0) 2790 kprintf("resCount = %d !?\n", 2791 resCount); 2792 /* XXX clear pdb_tr */ 2793 goto out; 2794 } 2795 vec[nvec].iov_base = ld; 2796 vec[nvec].iov_len = plen; 2797 nvec ++; 2798 ld += plen; 2799 } 2800 dbch->buf_offset = ld - (u_int8_t *)db_tr->buf; 2801 if (nvec == 0) 2802 kprintf("nvec == 0\n"); 2803 2804 /* DMA result-code will be written at the tail of packet */ 2805 #if BYTE_ORDER == BIG_ENDIAN 2806 stat = FWOHCI_DMA_READ(((struct fwohci_trailer *)(ld - sizeof(struct fwohci_trailer)))->stat) >> 16; 2807 #else 2808 stat = ((struct fwohci_trailer *)(ld - sizeof(struct fwohci_trailer)))->stat; 2809 #endif 2810 #if 0 2811 kprintf("plen: %d, stat %x\n", 2812 plen ,stat); 2813 #endif 2814 spd = (stat >> 5) & 0x3; 2815 stat &= 0x1f; 2816 switch(stat){ 2817 case FWOHCIEV_ACKPEND: 2818 #if 0 2819 kprintf("fwohci_arcv: ack pending tcode=0x%x..\n", fp->mode.common.tcode); 2820 #endif 2821 /* fall through */ 2822 case FWOHCIEV_ACKCOMPL: 2823 { 2824 struct fw_rcv_buf rb; 2825 2826 if ((vec[nvec-1].iov_len -= 2827 sizeof(struct fwohci_trailer)) == 0) 2828 nvec--; 2829 rb.fc = &sc->fc; 2830 rb.vec = vec; 2831 rb.nvec = nvec; 2832 rb.spd = spd; 2833 fw_rcv(&rb); 2834 break; 2835 } 2836 case FWOHCIEV_BUSRST: 2837 if (sc->fc.status != FWBUSRESET) 2838 kprintf("got BUSRST packet!?\n"); 2839 break; 2840 default: 2841 device_printf(sc->fc.dev, "Async DMA Receive error err = %02x %s\n", stat, fwohcicode[stat]); 2842 #if 0 /* XXX */ 2843 goto out; 2844 #endif 2845 break; 2846 } 2847 pcnt ++; 2848 if (dbch->pdb_tr != NULL) { 2849 fwohci_arcv_free_buf(dbch, dbch->pdb_tr); 2850 dbch->pdb_tr = NULL; 2851 } 2852 2853 } 2854 out: 2855 if (resCount == 0) { 2856 /* done on this buffer */ 2857 if (dbch->pdb_tr == NULL) { 2858 fwohci_arcv_free_buf(dbch, db_tr); 2859 dbch->buf_offset = 0; 2860 } else 2861 if (dbch->pdb_tr != db_tr) 2862 kprintf("pdb_tr != db_tr\n"); 2863 db_tr = STAILQ_NEXT(db_tr, link); 2864 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2865 >> OHCI_STATUS_SHIFT; 2866 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2867 & OHCI_COUNT_MASK; 2868 /* XXX check buffer overrun */ 2869 dbch->top = db_tr; 2870 } else { 2871 dbch->buf_offset = dbch->xferq.psize - resCount; 2872 break; 2873 } 2874 /* XXX make sure DMA is not dead */ 2875 } 2876 #if 0 2877 if (pcnt < 1) 2878 kprintf("fwohci_arcv: no packets\n"); 2879 #endif 2880 crit_exit(); 2881 } 2882