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 static char dbcode[16][0x10]={"OUTM", "OUTL","INPM","INPL", 66 "STOR","LOAD","NOP ","STOP",}; 67 68 static char dbkey[8][0x10]={"ST0", "ST1","ST2","ST3", 69 "UNDEF","REG","SYS","DEV"}; 70 static char dbcond[4][0x10]={"NEV","C=1", "C=0", "ALL"}; 71 char fwohcicode[32][0x20]={ 72 "No stat","Undef","long","miss Ack err", 73 "underrun","overrun","desc err", "data read err", 74 "data write err","bus reset","timeout","tcode err", 75 "Undef","Undef","unknown event","flushed", 76 "Undef","ack complete","ack pend","Undef", 77 "ack busy_X","ack busy_A","ack busy_B","Undef", 78 "Undef","Undef","Undef","ack tardy", 79 "Undef","ack data_err","ack type_err",""}; 80 81 #define MAX_SPEED 3 82 extern char *linkspeed[]; 83 u_int32_t tagbit[4] = { 1 << 28, 1 << 29, 1 << 30, 1 << 31}; 84 85 static struct tcode_info tinfo[] = { 86 /* hdr_len block flag*/ 87 /* 0 WREQQ */ {16, FWTI_REQ | FWTI_TLABEL}, 88 /* 1 WREQB */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 89 /* 2 WRES */ {12, FWTI_RES}, 90 /* 3 XXX */ { 0, 0}, 91 /* 4 RREQQ */ {12, FWTI_REQ | FWTI_TLABEL}, 92 /* 5 RREQB */ {16, FWTI_REQ | FWTI_TLABEL}, 93 /* 6 RRESQ */ {16, FWTI_RES}, 94 /* 7 RRESB */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 95 /* 8 CYCS */ { 0, 0}, 96 /* 9 LREQ */ {16, FWTI_REQ | FWTI_TLABEL | FWTI_BLOCK_ASY}, 97 /* a STREAM */ { 4, FWTI_REQ | FWTI_BLOCK_STR}, 98 /* b LRES */ {16, FWTI_RES | FWTI_BLOCK_ASY}, 99 /* c XXX */ { 0, 0}, 100 /* d XXX */ { 0, 0}, 101 /* e PHY */ {12, FWTI_REQ}, 102 /* f XXX */ { 0, 0} 103 }; 104 105 #define OHCI_WRITE_SIGMASK 0xffff0000 106 #define OHCI_READ_SIGMASK 0xffff0000 107 108 #define OWRITE(sc, r, x) bus_space_write_4((sc)->bst, (sc)->bsh, (r), (x)) 109 #define OREAD(sc, r) bus_space_read_4((sc)->bst, (sc)->bsh, (r)) 110 111 static void fwohci_ibr (struct firewire_comm *); 112 static void fwohci_db_init (struct fwohci_softc *, struct fwohci_dbch *); 113 static void fwohci_db_free (struct fwohci_dbch *); 114 static void fwohci_arcv (struct fwohci_softc *, struct fwohci_dbch *, int); 115 static void fwohci_txd (struct fwohci_softc *, struct fwohci_dbch *); 116 static void fwohci_start_atq (struct firewire_comm *); 117 static void fwohci_start_ats (struct firewire_comm *); 118 static void fwohci_start (struct fwohci_softc *, struct fwohci_dbch *); 119 static u_int32_t fwphy_wrdata ( struct fwohci_softc *, u_int32_t, u_int32_t); 120 static u_int32_t fwphy_rddata ( struct fwohci_softc *, u_int32_t); 121 static int fwohci_rx_enable (struct fwohci_softc *, struct fwohci_dbch *); 122 static int fwohci_tx_enable (struct fwohci_softc *, struct fwohci_dbch *); 123 static int fwohci_irx_enable (struct firewire_comm *, int); 124 static int fwohci_irx_disable (struct firewire_comm *, int); 125 #if BYTE_ORDER == BIG_ENDIAN 126 static void fwohci_irx_post (struct firewire_comm *, u_int32_t *); 127 #endif 128 static int fwohci_itxbuf_enable (struct firewire_comm *, int); 129 static int fwohci_itx_disable (struct firewire_comm *, int); 130 static void fwohci_timeout (void *); 131 static void fwohci_set_intr (struct firewire_comm *, int); 132 133 static int fwohci_add_rx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int, struct fwdma_alloc *); 134 static int fwohci_add_tx_buf (struct fwohci_dbch *, struct fwohcidb_tr *, int); 135 static void dump_db (struct fwohci_softc *, u_int32_t); 136 static void print_db (struct fwohcidb_tr *, struct fwohcidb *, u_int32_t , u_int32_t); 137 static void dump_dma (struct fwohci_softc *, u_int32_t); 138 static u_int32_t fwohci_cyctimer (struct firewire_comm *); 139 static void fwohci_rbuf_update (struct fwohci_softc *, int); 140 static void fwohci_tbuf_update (struct fwohci_softc *, int); 141 void fwohci_txbufdb (struct fwohci_softc *, int , struct fw_bulkxfer *); 142 #if FWOHCI_TASKQUEUE 143 static void fwohci_complete(void *, int); 144 #endif 145 146 /* 147 * memory allocated for DMA programs 148 */ 149 #define DMA_PROG_ALLOC (8 * PAGE_SIZE) 150 151 #define NDB FWMAXQUEUE 152 153 #define OHCI_VERSION 0x00 154 #define OHCI_ATRETRY 0x08 155 #define OHCI_CROMHDR 0x18 156 #define OHCI_BUS_OPT 0x20 157 #define OHCI_BUSIRMC (1 << 31) 158 #define OHCI_BUSCMC (1 << 30) 159 #define OHCI_BUSISC (1 << 29) 160 #define OHCI_BUSBMC (1 << 28) 161 #define OHCI_BUSPMC (1 << 27) 162 #define OHCI_BUSFNC OHCI_BUSIRMC | OHCI_BUSCMC | OHCI_BUSISC |\ 163 OHCI_BUSBMC | OHCI_BUSPMC 164 165 #define OHCI_EUID_HI 0x24 166 #define OHCI_EUID_LO 0x28 167 168 #define OHCI_CROMPTR 0x34 169 #define OHCI_HCCCTL 0x50 170 #define OHCI_HCCCTLCLR 0x54 171 #define OHCI_AREQHI 0x100 172 #define OHCI_AREQHICLR 0x104 173 #define OHCI_AREQLO 0x108 174 #define OHCI_AREQLOCLR 0x10c 175 #define OHCI_PREQHI 0x110 176 #define OHCI_PREQHICLR 0x114 177 #define OHCI_PREQLO 0x118 178 #define OHCI_PREQLOCLR 0x11c 179 #define OHCI_PREQUPPER 0x120 180 181 #define OHCI_SID_BUF 0x64 182 #define OHCI_SID_CNT 0x68 183 #define OHCI_SID_ERR (1 << 31) 184 #define OHCI_SID_CNT_MASK 0xffc 185 186 #define OHCI_IT_STAT 0x90 187 #define OHCI_IT_STATCLR 0x94 188 #define OHCI_IT_MASK 0x98 189 #define OHCI_IT_MASKCLR 0x9c 190 191 #define OHCI_IR_STAT 0xa0 192 #define OHCI_IR_STATCLR 0xa4 193 #define OHCI_IR_MASK 0xa8 194 #define OHCI_IR_MASKCLR 0xac 195 196 #define OHCI_LNKCTL 0xe0 197 #define OHCI_LNKCTLCLR 0xe4 198 199 #define OHCI_PHYACCESS 0xec 200 #define OHCI_CYCLETIMER 0xf0 201 202 #define OHCI_DMACTL(off) (off) 203 #define OHCI_DMACTLCLR(off) (off + 4) 204 #define OHCI_DMACMD(off) (off + 0xc) 205 #define OHCI_DMAMATCH(off) (off + 0x10) 206 207 #define OHCI_ATQOFF 0x180 208 #define OHCI_ATQCTL OHCI_ATQOFF 209 #define OHCI_ATQCTLCLR (OHCI_ATQOFF + 4) 210 #define OHCI_ATQCMD (OHCI_ATQOFF + 0xc) 211 #define OHCI_ATQMATCH (OHCI_ATQOFF + 0x10) 212 213 #define OHCI_ATSOFF 0x1a0 214 #define OHCI_ATSCTL OHCI_ATSOFF 215 #define OHCI_ATSCTLCLR (OHCI_ATSOFF + 4) 216 #define OHCI_ATSCMD (OHCI_ATSOFF + 0xc) 217 #define OHCI_ATSMATCH (OHCI_ATSOFF + 0x10) 218 219 #define OHCI_ARQOFF 0x1c0 220 #define OHCI_ARQCTL OHCI_ARQOFF 221 #define OHCI_ARQCTLCLR (OHCI_ARQOFF + 4) 222 #define OHCI_ARQCMD (OHCI_ARQOFF + 0xc) 223 #define OHCI_ARQMATCH (OHCI_ARQOFF + 0x10) 224 225 #define OHCI_ARSOFF 0x1e0 226 #define OHCI_ARSCTL OHCI_ARSOFF 227 #define OHCI_ARSCTLCLR (OHCI_ARSOFF + 4) 228 #define OHCI_ARSCMD (OHCI_ARSOFF + 0xc) 229 #define OHCI_ARSMATCH (OHCI_ARSOFF + 0x10) 230 231 #define OHCI_ITOFF(CH) (0x200 + 0x10 * (CH)) 232 #define OHCI_ITCTL(CH) (OHCI_ITOFF(CH)) 233 #define OHCI_ITCTLCLR(CH) (OHCI_ITOFF(CH) + 4) 234 #define OHCI_ITCMD(CH) (OHCI_ITOFF(CH) + 0xc) 235 236 #define OHCI_IROFF(CH) (0x400 + 0x20 * (CH)) 237 #define OHCI_IRCTL(CH) (OHCI_IROFF(CH)) 238 #define OHCI_IRCTLCLR(CH) (OHCI_IROFF(CH) + 4) 239 #define OHCI_IRCMD(CH) (OHCI_IROFF(CH) + 0xc) 240 #define OHCI_IRMATCH(CH) (OHCI_IROFF(CH) + 0x10) 241 242 d_ioctl_t fwohci_ioctl; 243 244 /* 245 * Communication with PHY device 246 */ 247 static u_int32_t 248 fwphy_wrdata( struct fwohci_softc *sc, u_int32_t addr, u_int32_t data) 249 { 250 u_int32_t fun; 251 252 addr &= 0xf; 253 data &= 0xff; 254 255 fun = (PHYDEV_WRCMD | (addr << PHYDEV_REGADDR) | (data << PHYDEV_WRDATA)); 256 OWRITE(sc, OHCI_PHYACCESS, fun); 257 DELAY(100); 258 259 return(fwphy_rddata( sc, addr)); 260 } 261 262 static u_int32_t 263 fwohci_set_bus_manager(struct firewire_comm *fc, u_int node) 264 { 265 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 266 int i; 267 u_int32_t bm; 268 269 #define OHCI_CSR_DATA 0x0c 270 #define OHCI_CSR_COMP 0x10 271 #define OHCI_CSR_CONT 0x14 272 #define OHCI_BUS_MANAGER_ID 0 273 274 OWRITE(sc, OHCI_CSR_DATA, node); 275 OWRITE(sc, OHCI_CSR_COMP, 0x3f); 276 OWRITE(sc, OHCI_CSR_CONT, OHCI_BUS_MANAGER_ID); 277 for (i = 0; !(OREAD(sc, OHCI_CSR_CONT) & (1<<31)) && (i < 1000); i++) 278 DELAY(10); 279 bm = OREAD(sc, OHCI_CSR_DATA); 280 if((bm & 0x3f) == 0x3f) 281 bm = node; 282 if (bootverbose) 283 device_printf(sc->fc.dev, 284 "fw_set_bus_manager: %d->%d (loop=%d)\n", bm, node, i); 285 286 return(bm); 287 } 288 289 static u_int32_t 290 fwphy_rddata(struct fwohci_softc *sc, u_int addr) 291 { 292 u_int32_t fun, stat; 293 u_int i, retry = 0; 294 295 addr &= 0xf; 296 #define MAX_RETRY 100 297 again: 298 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_REG_FAIL); 299 fun = PHYDEV_RDCMD | (addr << PHYDEV_REGADDR); 300 OWRITE(sc, OHCI_PHYACCESS, fun); 301 for ( i = 0 ; i < MAX_RETRY ; i ++ ){ 302 fun = OREAD(sc, OHCI_PHYACCESS); 303 if ((fun & PHYDEV_RDCMD) == 0 && (fun & PHYDEV_RDDONE) != 0) 304 break; 305 DELAY(100); 306 } 307 if(i >= MAX_RETRY) { 308 if (bootverbose) 309 device_printf(sc->fc.dev, "phy read failed(1).\n"); 310 if (++retry < MAX_RETRY) { 311 DELAY(100); 312 goto again; 313 } 314 } 315 /* Make sure that SCLK is started */ 316 stat = OREAD(sc, FWOHCI_INTSTAT); 317 if ((stat & OHCI_INT_REG_FAIL) != 0 || 318 ((fun >> PHYDEV_REGADDR) & 0xf) != addr) { 319 if (bootverbose) 320 device_printf(sc->fc.dev, "phy read failed(2).\n"); 321 if (++retry < MAX_RETRY) { 322 DELAY(100); 323 goto again; 324 } 325 } 326 if (bootverbose || retry >= MAX_RETRY) 327 device_printf(sc->fc.dev, 328 "fwphy_rddata: 0x%x loop=%d, retry=%d\n", addr, i, retry); 329 #undef MAX_RETRY 330 return((fun >> PHYDEV_RDDATA )& 0xff); 331 } 332 /* Device specific ioctl. */ 333 int 334 fwohci_ioctl (struct dev_ioctl_args *ap) 335 { 336 cdev_t dev = ap->a_head.a_dev; 337 struct firewire_softc *sc; 338 struct fwohci_softc *fc; 339 int unit = DEV2UNIT(dev); 340 int err = 0; 341 struct fw_reg_req_t *reg = (struct fw_reg_req_t *) ap->a_data; 342 u_int32_t *dmach = (u_int32_t *) ap->a_data; 343 344 sc = devclass_get_softc(firewire_devclass, unit); 345 if(sc == NULL){ 346 return(EINVAL); 347 } 348 fc = (struct fwohci_softc *)sc->fc; 349 350 if (!ap->a_data) 351 return(EINVAL); 352 353 switch (ap->a_cmd) { 354 case FWOHCI_WRREG: 355 #define OHCI_MAX_REG 0x800 356 if(reg->addr <= OHCI_MAX_REG){ 357 OWRITE(fc, reg->addr, reg->data); 358 reg->data = OREAD(fc, reg->addr); 359 }else{ 360 err = EINVAL; 361 } 362 break; 363 case FWOHCI_RDREG: 364 if(reg->addr <= OHCI_MAX_REG){ 365 reg->data = OREAD(fc, reg->addr); 366 }else{ 367 err = EINVAL; 368 } 369 break; 370 /* Read DMA descriptors for debug */ 371 case DUMPDMA: 372 if(*dmach <= OHCI_MAX_DMA_CH ){ 373 dump_dma(fc, *dmach); 374 dump_db(fc, *dmach); 375 }else{ 376 err = EINVAL; 377 } 378 break; 379 /* Read/Write Phy registers */ 380 #define OHCI_MAX_PHY_REG 0xf 381 case FWOHCI_RDPHYREG: 382 if (reg->addr <= OHCI_MAX_PHY_REG) 383 reg->data = fwphy_rddata(fc, reg->addr); 384 else 385 err = EINVAL; 386 break; 387 case FWOHCI_WRPHYREG: 388 if (reg->addr <= OHCI_MAX_PHY_REG) 389 reg->data = fwphy_wrdata(fc, reg->addr, reg->data); 390 else 391 err = EINVAL; 392 break; 393 default: 394 err = EINVAL; 395 break; 396 } 397 return err; 398 } 399 400 static int 401 fwohci_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 DELAY(500); 414 415 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 416 417 if((reg >> 5) != 7 ){ 418 sc->fc.mode &= ~FWPHYASYST; 419 sc->fc.nport = reg & FW_PHY_NP; 420 sc->fc.speed = reg & FW_PHY_SPD >> 6; 421 if (sc->fc.speed > MAX_SPEED) { 422 device_printf(dev, "invalid speed %d (fixed to %d).\n", 423 sc->fc.speed, MAX_SPEED); 424 sc->fc.speed = MAX_SPEED; 425 } 426 device_printf(dev, 427 "Phy 1394 only %s, %d ports.\n", 428 linkspeed[sc->fc.speed], sc->fc.nport); 429 }else{ 430 reg2 = fwphy_rddata(sc, FW_PHY_ESPD_REG); 431 sc->fc.mode |= FWPHYASYST; 432 sc->fc.nport = reg & FW_PHY_NP; 433 sc->fc.speed = (reg2 & FW_PHY_ESPD) >> 5; 434 if (sc->fc.speed > MAX_SPEED) { 435 device_printf(dev, "invalid speed %d (fixed to %d).\n", 436 sc->fc.speed, MAX_SPEED); 437 sc->fc.speed = MAX_SPEED; 438 } 439 device_printf(dev, 440 "Phy 1394a available %s, %d ports.\n", 441 linkspeed[sc->fc.speed], sc->fc.nport); 442 443 /* check programPhyEnable */ 444 reg2 = fwphy_rddata(sc, 5); 445 #if 0 446 if (e1394a && (OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_PRPHY)) { 447 #else /* XXX force to enable 1394a */ 448 if (e1394a) { 449 #endif 450 if (bootverbose) 451 device_printf(dev, 452 "Enable 1394a Enhancements\n"); 453 /* enable EAA EMC */ 454 reg2 |= 0x03; 455 /* set aPhyEnhanceEnable */ 456 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_PHYEN); 457 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_PRPHY); 458 } else { 459 /* for safe */ 460 reg2 &= ~0x83; 461 } 462 reg2 = fwphy_wrdata(sc, 5, reg2); 463 } 464 465 reg = fwphy_rddata(sc, FW_PHY_SPD_REG); 466 if((reg >> 5) == 7 ){ 467 reg = fwphy_rddata(sc, 4); 468 reg |= 1 << 6; 469 fwphy_wrdata(sc, 4, reg); 470 reg = fwphy_rddata(sc, 4); 471 } 472 return 0; 473 } 474 475 476 void 477 fwohci_reset(struct fwohci_softc *sc, device_t dev) 478 { 479 int i, max_rec, speed; 480 u_int32_t reg, reg2; 481 struct fwohcidb_tr *db_tr; 482 483 /* Disable interrupt */ 484 OWRITE(sc, FWOHCI_INTMASKCLR, ~0); 485 486 /* Now stopping all DMA channel */ 487 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 488 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 489 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 490 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 491 492 OWRITE(sc, OHCI_IR_MASKCLR, ~0); 493 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 494 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 495 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 496 } 497 498 /* FLUSH FIFO and reset Transmitter/Reciever */ 499 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 500 if (bootverbose) 501 device_printf(dev, "resetting OHCI..."); 502 i = 0; 503 while(OREAD(sc, OHCI_HCCCTL) & OHCI_HCC_RESET) { 504 if (i++ > 100) break; 505 DELAY(1000); 506 } 507 if (bootverbose) 508 kprintf("done (loop=%d)\n", i); 509 510 /* Probe phy */ 511 fwohci_probe_phy(sc, dev); 512 513 /* Probe link */ 514 reg = OREAD(sc, OHCI_BUS_OPT); 515 reg2 = reg | OHCI_BUSFNC; 516 max_rec = (reg & 0x0000f000) >> 12; 517 speed = (reg & 0x00000007); 518 device_printf(dev, "Link %s, max_rec %d bytes.\n", 519 linkspeed[speed], MAXREC(max_rec)); 520 /* XXX fix max_rec */ 521 sc->fc.maxrec = sc->fc.speed + 8; 522 if (max_rec != sc->fc.maxrec) { 523 reg2 = (reg2 & 0xffff0fff) | (sc->fc.maxrec << 12); 524 device_printf(dev, "max_rec %d -> %d\n", 525 MAXREC(max_rec), MAXREC(sc->fc.maxrec)); 526 } 527 if (bootverbose) 528 device_printf(dev, "BUS_OPT 0x%x -> 0x%x\n", reg, reg2); 529 OWRITE(sc, OHCI_BUS_OPT, reg2); 530 531 /* Initialize registers */ 532 OWRITE(sc, OHCI_CROMHDR, sc->fc.config_rom[0]); 533 OWRITE(sc, OHCI_CROMPTR, sc->crom_dma.bus_addr); 534 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_BIGEND); 535 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_POSTWR); 536 OWRITE(sc, OHCI_SID_BUF, sc->sid_dma.bus_addr); 537 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_SID); 538 539 /* Enable link */ 540 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LINKEN); 541 542 /* Force to start async RX DMA */ 543 sc->arrq.xferq.flag &= ~FWXFERQ_RUNNING; 544 sc->arrs.xferq.flag &= ~FWXFERQ_RUNNING; 545 fwohci_rx_enable(sc, &sc->arrq); 546 fwohci_rx_enable(sc, &sc->arrs); 547 548 /* Initialize async TX */ 549 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 550 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN | OHCI_CNTL_DMA_DEAD); 551 552 /* AT Retries */ 553 OWRITE(sc, FWOHCI_RETRY, 554 /* CycleLimit PhyRespRetries ATRespRetries ATReqRetries */ 555 (0xffff << 16 ) | (0x0f << 8) | (0x0f << 4) | 0x0f) ; 556 557 sc->atrq.top = STAILQ_FIRST(&sc->atrq.db_trq); 558 sc->atrs.top = STAILQ_FIRST(&sc->atrs.db_trq); 559 sc->atrq.bottom = sc->atrq.top; 560 sc->atrs.bottom = sc->atrs.top; 561 562 for( i = 0, db_tr = sc->atrq.top; i < sc->atrq.ndb ; 563 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 564 db_tr->xfer = NULL; 565 } 566 for( i = 0, db_tr = sc->atrs.top; i < sc->atrs.ndb ; 567 i ++, db_tr = STAILQ_NEXT(db_tr, link)){ 568 db_tr->xfer = NULL; 569 } 570 571 572 /* Enable interrupt */ 573 OWRITE(sc, FWOHCI_INTMASK, 574 OHCI_INT_ERR | OHCI_INT_PHY_SID 575 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 576 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 577 | OHCI_INT_PHY_BUS_R | OHCI_INT_PW_ERR); 578 fwohci_set_intr(&sc->fc, 1); 579 580 } 581 582 int 583 fwohci_init(struct fwohci_softc *sc, device_t dev) 584 { 585 int i, mver; 586 u_int32_t reg; 587 u_int8_t ui[8]; 588 589 #if FWOHCI_TASKQUEUE 590 TASK_INIT(&sc->fwohci_task_complete, 0, fwohci_complete, sc); 591 #endif 592 593 /* OHCI version */ 594 reg = OREAD(sc, OHCI_VERSION); 595 mver = (reg >> 16) & 0xff; 596 device_printf(dev, "OHCI version %x.%x (ROM=%d)\n", 597 mver, reg & 0xff, (reg>>24) & 1); 598 if (mver < 1 || mver > 9) { 599 device_printf(dev, "invalid OHCI version\n"); 600 return (ENXIO); 601 } 602 603 /* Available Isochrounous DMA channel probe */ 604 OWRITE(sc, OHCI_IT_MASK, 0xffffffff); 605 OWRITE(sc, OHCI_IR_MASK, 0xffffffff); 606 reg = OREAD(sc, OHCI_IT_MASK) & OREAD(sc, OHCI_IR_MASK); 607 OWRITE(sc, OHCI_IT_MASKCLR, 0xffffffff); 608 OWRITE(sc, OHCI_IR_MASKCLR, 0xffffffff); 609 for (i = 0; i < 0x20; i++) 610 if ((reg & (1 << i)) == 0) 611 break; 612 sc->fc.nisodma = i; 613 device_printf(dev, "No. of Isochronous channel is %d.\n", i); 614 if (i == 0) 615 return (ENXIO); 616 617 sc->fc.arq = &sc->arrq.xferq; 618 sc->fc.ars = &sc->arrs.xferq; 619 sc->fc.atq = &sc->atrq.xferq; 620 sc->fc.ats = &sc->atrs.xferq; 621 622 sc->arrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 623 sc->arrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 624 sc->atrq.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 625 sc->atrs.xferq.psize = roundup2(FWPMAX_S400, PAGE_SIZE); 626 627 sc->arrq.xferq.start = NULL; 628 sc->arrs.xferq.start = NULL; 629 sc->atrq.xferq.start = fwohci_start_atq; 630 sc->atrs.xferq.start = fwohci_start_ats; 631 632 sc->arrq.xferq.buf = NULL; 633 sc->arrs.xferq.buf = NULL; 634 sc->atrq.xferq.buf = NULL; 635 sc->atrs.xferq.buf = NULL; 636 637 sc->arrq.xferq.dmach = -1; 638 sc->arrs.xferq.dmach = -1; 639 sc->atrq.xferq.dmach = -1; 640 sc->atrs.xferq.dmach = -1; 641 642 sc->arrq.ndesc = 1; 643 sc->arrs.ndesc = 1; 644 sc->atrq.ndesc = 8; /* equal to maximum of mbuf chains */ 645 sc->atrs.ndesc = 2; 646 647 sc->arrq.ndb = NDB; 648 sc->arrs.ndb = NDB / 2; 649 sc->atrq.ndb = NDB; 650 sc->atrs.ndb = NDB / 2; 651 652 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 653 sc->fc.it[i] = &sc->it[i].xferq; 654 sc->fc.ir[i] = &sc->ir[i].xferq; 655 sc->it[i].xferq.dmach = i; 656 sc->ir[i].xferq.dmach = i; 657 sc->it[i].ndb = 0; 658 sc->ir[i].ndb = 0; 659 } 660 661 sc->fc.tcode = tinfo; 662 sc->fc.dev = dev; 663 664 sc->fc.config_rom = fwdma_malloc(&sc->fc, CROMSIZE, CROMSIZE, 665 &sc->crom_dma, BUS_DMA_WAITOK); 666 if(sc->fc.config_rom == NULL){ 667 device_printf(dev, "config_rom alloc failed."); 668 return ENOMEM; 669 } 670 671 #if 0 672 bzero(&sc->fc.config_rom[0], CROMSIZE); 673 sc->fc.config_rom[1] = 0x31333934; 674 sc->fc.config_rom[2] = 0xf000a002; 675 sc->fc.config_rom[3] = OREAD(sc, OHCI_EUID_HI); 676 sc->fc.config_rom[4] = OREAD(sc, OHCI_EUID_LO); 677 sc->fc.config_rom[5] = 0; 678 sc->fc.config_rom[0] = (4 << 24) | (5 << 16); 679 680 sc->fc.config_rom[0] |= fw_crc16(&sc->fc.config_rom[1], 5*4); 681 #endif 682 683 684 /* SID recieve buffer must allign 2^11 */ 685 #define OHCI_SIDSIZE (1 << 11) 686 sc->sid_buf = fwdma_malloc(&sc->fc, OHCI_SIDSIZE, OHCI_SIDSIZE, 687 &sc->sid_dma, BUS_DMA_WAITOK); 688 if (sc->sid_buf == NULL) { 689 device_printf(dev, "sid_buf alloc failed."); 690 return ENOMEM; 691 } 692 693 fwdma_malloc(&sc->fc, sizeof(u_int32_t), sizeof(u_int32_t), 694 &sc->dummy_dma, BUS_DMA_WAITOK); 695 696 if (sc->dummy_dma.v_addr == NULL) { 697 device_printf(dev, "dummy_dma alloc failed."); 698 return ENOMEM; 699 } 700 701 fwohci_db_init(sc, &sc->arrq); 702 if ((sc->arrq.flags & FWOHCI_DBCH_INIT) == 0) 703 return ENOMEM; 704 705 fwohci_db_init(sc, &sc->arrs); 706 if ((sc->arrs.flags & FWOHCI_DBCH_INIT) == 0) 707 return ENOMEM; 708 709 fwohci_db_init(sc, &sc->atrq); 710 if ((sc->atrq.flags & FWOHCI_DBCH_INIT) == 0) 711 return ENOMEM; 712 713 fwohci_db_init(sc, &sc->atrs); 714 if ((sc->atrs.flags & FWOHCI_DBCH_INIT) == 0) 715 return ENOMEM; 716 717 sc->fc.eui.hi = OREAD(sc, FWOHCIGUID_H); 718 sc->fc.eui.lo = OREAD(sc, FWOHCIGUID_L); 719 for( i = 0 ; i < 8 ; i ++) 720 ui[i] = FW_EUI64_BYTE(&sc->fc.eui,i); 721 device_printf(dev, "EUI64 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", 722 ui[0], ui[1], ui[2], ui[3], ui[4], ui[5], ui[6], ui[7]); 723 724 sc->fc.ioctl = fwohci_ioctl; 725 sc->fc.cyctimer = fwohci_cyctimer; 726 sc->fc.set_bmr = fwohci_set_bus_manager; 727 sc->fc.ibr = fwohci_ibr; 728 sc->fc.irx_enable = fwohci_irx_enable; 729 sc->fc.irx_disable = fwohci_irx_disable; 730 731 sc->fc.itx_enable = fwohci_itxbuf_enable; 732 sc->fc.itx_disable = fwohci_itx_disable; 733 #if BYTE_ORDER == BIG_ENDIAN 734 sc->fc.irx_post = fwohci_irx_post; 735 #else 736 sc->fc.irx_post = NULL; 737 #endif 738 sc->fc.itx_post = NULL; 739 sc->fc.timeout = fwohci_timeout; 740 sc->fc.poll = fwohci_poll; 741 sc->fc.set_intr = fwohci_set_intr; 742 743 sc->intmask = sc->irstat = sc->itstat = 0; 744 745 fw_init(&sc->fc); 746 fwohci_reset(sc, dev); 747 748 return 0; 749 } 750 751 static void 752 fwohci_timeout(void *arg) 753 { 754 } 755 756 static u_int32_t 757 fwohci_cyctimer(struct firewire_comm *fc) 758 { 759 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 760 return(OREAD(sc, OHCI_CYCLETIMER)); 761 } 762 763 int 764 fwohci_detach(struct fwohci_softc *sc, device_t dev) 765 { 766 int i; 767 768 if (sc->sid_buf != NULL) 769 fwdma_free(&sc->fc, &sc->sid_dma); 770 if (sc->fc.config_rom != NULL) 771 fwdma_free(&sc->fc, &sc->crom_dma); 772 773 fwohci_db_free(&sc->arrq); 774 fwohci_db_free(&sc->arrs); 775 776 fwohci_db_free(&sc->atrq); 777 fwohci_db_free(&sc->atrs); 778 779 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 780 fwohci_db_free(&sc->it[i]); 781 fwohci_db_free(&sc->ir[i]); 782 } 783 784 return 0; 785 } 786 787 #define LAST_DB(dbtr, db) do { \ 788 struct fwohcidb_tr *_dbtr = (dbtr); \ 789 int _cnt = _dbtr->dbcnt; \ 790 db = &_dbtr->db[ (_cnt > 2) ? (_cnt -1) : 0]; \ 791 } while (0) 792 793 static void 794 fwohci_execute_db(void *arg, bus_dma_segment_t *segs, int nseg, int error) 795 { 796 struct fwohcidb_tr *db_tr; 797 struct fwohcidb *db; 798 bus_dma_segment_t *s; 799 int i; 800 801 db_tr = (struct fwohcidb_tr *)arg; 802 db = &db_tr->db[db_tr->dbcnt]; 803 if (error) { 804 if (firewire_debug || error != EFBIG) 805 kprintf("fwohci_execute_db: error=%d\n", error); 806 return; 807 } 808 for (i = 0; i < nseg; i++) { 809 s = &segs[i]; 810 FWOHCI_DMA_WRITE(db->db.desc.addr, s->ds_addr); 811 FWOHCI_DMA_WRITE(db->db.desc.cmd, s->ds_len); 812 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 813 db++; 814 db_tr->dbcnt++; 815 } 816 } 817 818 static void 819 fwohci_execute_db2(void *arg, bus_dma_segment_t *segs, int nseg, 820 bus_size_t size, int error) 821 { 822 fwohci_execute_db(arg, segs, nseg, error); 823 } 824 825 static void 826 fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 827 { 828 int i; 829 int tcode, hdr_len, pl_off; 830 int fsegment = -1; 831 u_int32_t off; 832 struct fw_xfer *xfer; 833 struct fw_pkt *fp; 834 struct fwohci_txpkthdr *ohcifp; 835 struct fwohcidb_tr *db_tr; 836 struct fwohcidb *db; 837 u_int32_t *ld; 838 struct tcode_info *info; 839 static int maxdesc=0; 840 841 if(&sc->atrq == dbch){ 842 off = OHCI_ATQOFF; 843 }else if(&sc->atrs == dbch){ 844 off = OHCI_ATSOFF; 845 }else{ 846 return; 847 } 848 849 if (dbch->flags & FWOHCI_DBCH_FULL) 850 return; 851 852 crit_enter(); 853 db_tr = dbch->top; 854 txloop: 855 xfer = STAILQ_FIRST(&dbch->xferq.q); 856 if(xfer == NULL){ 857 goto kick; 858 } 859 if(dbch->xferq.queued == 0 ){ 860 device_printf(sc->fc.dev, "TX queue empty\n"); 861 } 862 STAILQ_REMOVE_HEAD(&dbch->xferq.q, link); 863 db_tr->xfer = xfer; 864 xfer->state = FWXF_START; 865 866 fp = &xfer->send.hdr; 867 tcode = fp->mode.common.tcode; 868 869 ohcifp = (struct fwohci_txpkthdr *) db_tr->db[1].db.immed; 870 info = &tinfo[tcode]; 871 hdr_len = pl_off = info->hdr_len; 872 873 ld = &ohcifp->mode.ld[0]; 874 ld[0] = ld[1] = ld[2] = ld[3] = 0; 875 for( i = 0 ; i < pl_off ; i+= 4) 876 ld[i/4] = fp->mode.ld[i/4]; 877 878 ohcifp->mode.common.spd = xfer->send.spd & 0x7; 879 if (tcode == FWTCODE_STREAM ){ 880 hdr_len = 8; 881 ohcifp->mode.stream.len = fp->mode.stream.len; 882 } else if (tcode == FWTCODE_PHY) { 883 hdr_len = 12; 884 ld[1] = fp->mode.ld[1]; 885 ld[2] = fp->mode.ld[2]; 886 ohcifp->mode.common.spd = 0; 887 ohcifp->mode.common.tcode = FWOHCITCODE_PHY; 888 } else { 889 ohcifp->mode.asycomm.dst = fp->mode.hdr.dst; 890 ohcifp->mode.asycomm.srcbus = OHCI_ASYSRCBUS; 891 ohcifp->mode.asycomm.tlrt |= FWRETRY_X; 892 } 893 db = &db_tr->db[0]; 894 FWOHCI_DMA_WRITE(db->db.desc.cmd, 895 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | hdr_len); 896 FWOHCI_DMA_WRITE(db->db.desc.addr, 0); 897 FWOHCI_DMA_WRITE(db->db.desc.res, 0); 898 /* Specify bound timer of asy. responce */ 899 if(&sc->atrs == dbch){ 900 FWOHCI_DMA_WRITE(db->db.desc.res, 901 (OREAD(sc, OHCI_CYCLETIMER) >> 12) + (1 << 13)); 902 } 903 #if BYTE_ORDER == BIG_ENDIAN 904 if (tcode == FWTCODE_WREQQ || tcode == FWTCODE_RRESQ) 905 hdr_len = 12; 906 for (i = 0; i < hdr_len/4; i ++) 907 FWOHCI_DMA_WRITE(ld[i], ld[i]); 908 #endif 909 910 again: 911 db_tr->dbcnt = 2; 912 db = &db_tr->db[db_tr->dbcnt]; 913 if (xfer->send.pay_len > 0) { 914 int err; 915 /* handle payload */ 916 if (xfer->mbuf == NULL) { 917 err = bus_dmamap_load(dbch->dmat, db_tr->dma_map, 918 &xfer->send.payload[0], xfer->send.pay_len, 919 fwohci_execute_db, db_tr, 920 /*flags*/0); 921 } else { 922 /* XXX we can handle only 6 (=8-2) mbuf chains */ 923 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 924 xfer->mbuf, 925 fwohci_execute_db2, db_tr, 926 /* flags */0); 927 if (err == EFBIG) { 928 struct mbuf *m0; 929 930 if (firewire_debug) 931 device_printf(sc->fc.dev, "EFBIG.\n"); 932 m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 933 if (m0 != NULL) { 934 m_copydata(xfer->mbuf, 0, 935 xfer->mbuf->m_pkthdr.len, 936 mtod(m0, caddr_t)); 937 m0->m_len = m0->m_pkthdr.len = 938 xfer->mbuf->m_pkthdr.len; 939 m_freem(xfer->mbuf); 940 xfer->mbuf = m0; 941 goto again; 942 } 943 device_printf(sc->fc.dev, "m_getcl failed.\n"); 944 } 945 } 946 if (err) 947 kprintf("dmamap_load: err=%d\n", err); 948 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 949 BUS_DMASYNC_PREWRITE); 950 #if 0 /* OHCI_OUTPUT_MODE == 0 */ 951 for (i = 2; i < db_tr->dbcnt; i++) 952 FWOHCI_DMA_SET(db_tr->db[i].db.desc.cmd, 953 OHCI_OUTPUT_MORE); 954 #endif 955 } 956 if (maxdesc < db_tr->dbcnt) { 957 maxdesc = db_tr->dbcnt; 958 if (bootverbose) 959 device_printf(sc->fc.dev, "maxdesc: %d\n", maxdesc); 960 } 961 /* last db */ 962 LAST_DB(db_tr, db); 963 FWOHCI_DMA_SET(db->db.desc.cmd, 964 OHCI_OUTPUT_LAST | OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 965 FWOHCI_DMA_WRITE(db->db.desc.depend, 966 STAILQ_NEXT(db_tr, link)->bus_addr); 967 968 if(fsegment == -1 ) 969 fsegment = db_tr->dbcnt; 970 if (dbch->pdb_tr != NULL) { 971 LAST_DB(dbch->pdb_tr, db); 972 FWOHCI_DMA_SET(db->db.desc.depend, db_tr->dbcnt); 973 } 974 dbch->pdb_tr = db_tr; 975 db_tr = STAILQ_NEXT(db_tr, link); 976 if(db_tr != dbch->bottom){ 977 goto txloop; 978 } else { 979 device_printf(sc->fc.dev, "fwohci_start: lack of db_trq\n"); 980 dbch->flags |= FWOHCI_DBCH_FULL; 981 } 982 kick: 983 /* kick asy q */ 984 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 985 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 986 987 if(dbch->xferq.flag & FWXFERQ_RUNNING) { 988 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_WAKE); 989 } else { 990 if (bootverbose) 991 device_printf(sc->fc.dev, "start AT DMA status=%x\n", 992 OREAD(sc, OHCI_DMACTL(off))); 993 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | fsegment); 994 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 995 dbch->xferq.flag |= FWXFERQ_RUNNING; 996 } 997 998 dbch->top = db_tr; 999 crit_exit(); 1000 return; 1001 } 1002 1003 static void 1004 fwohci_start_atq(struct firewire_comm *fc) 1005 { 1006 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1007 fwohci_start( sc, &(sc->atrq)); 1008 return; 1009 } 1010 1011 static void 1012 fwohci_start_ats(struct firewire_comm *fc) 1013 { 1014 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1015 fwohci_start( sc, &(sc->atrs)); 1016 return; 1017 } 1018 1019 static void 1020 fwohci_txd(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1021 { 1022 int ch, err = 0; 1023 struct fwohcidb_tr *tr; 1024 struct fwohcidb *db; 1025 struct fw_xfer *xfer; 1026 u_int32_t off; 1027 u_int stat, status; 1028 int packets; 1029 struct firewire_comm *fc = (struct firewire_comm *)sc; 1030 1031 if(&sc->atrq == dbch){ 1032 off = OHCI_ATQOFF; 1033 ch = ATRQ_CH; 1034 }else if(&sc->atrs == dbch){ 1035 off = OHCI_ATSOFF; 1036 ch = ATRS_CH; 1037 }else{ 1038 return; 1039 } 1040 crit_enter(); 1041 tr = dbch->bottom; 1042 packets = 0; 1043 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 1044 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 1045 while(dbch->xferq.queued > 0){ 1046 LAST_DB(tr, db); 1047 status = FWOHCI_DMA_READ(db->db.desc.res) >> OHCI_STATUS_SHIFT; 1048 if(!(status & OHCI_CNTL_DMA_ACTIVE)){ 1049 if (fc->status != FWBUSRESET) 1050 /* maybe out of order?? */ 1051 goto out; 1052 } 1053 bus_dmamap_sync(dbch->dmat, tr->dma_map, 1054 BUS_DMASYNC_POSTWRITE); 1055 bus_dmamap_unload(dbch->dmat, tr->dma_map); 1056 #if 1 1057 if (firewire_debug) 1058 dump_db(sc, ch); 1059 #endif 1060 if(status & OHCI_CNTL_DMA_DEAD) { 1061 /* Stop DMA */ 1062 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1063 device_printf(sc->fc.dev, "force reset AT FIFO\n"); 1064 OWRITE(sc, OHCI_HCCCTLCLR, OHCI_HCC_LINKEN); 1065 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_LPS | OHCI_HCC_LINKEN); 1066 OWRITE(sc, OHCI_DMACTLCLR(off), OHCI_CNTL_DMA_RUN); 1067 } 1068 stat = status & FWOHCIEV_MASK; 1069 switch(stat){ 1070 case FWOHCIEV_ACKPEND: 1071 case FWOHCIEV_ACKCOMPL: 1072 err = 0; 1073 break; 1074 case FWOHCIEV_ACKBSA: 1075 case FWOHCIEV_ACKBSB: 1076 case FWOHCIEV_ACKBSX: 1077 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1078 err = EBUSY; 1079 break; 1080 case FWOHCIEV_FLUSHED: 1081 case FWOHCIEV_ACKTARD: 1082 device_printf(sc->fc.dev, "txd err=%2x %s\n", stat, fwohcicode[stat]); 1083 err = EAGAIN; 1084 break; 1085 case FWOHCIEV_MISSACK: 1086 case FWOHCIEV_UNDRRUN: 1087 case FWOHCIEV_OVRRUN: 1088 case FWOHCIEV_DESCERR: 1089 case FWOHCIEV_DTRDERR: 1090 case FWOHCIEV_TIMEOUT: 1091 case FWOHCIEV_TCODERR: 1092 case FWOHCIEV_UNKNOWN: 1093 case FWOHCIEV_ACKDERR: 1094 case FWOHCIEV_ACKTERR: 1095 default: 1096 device_printf(sc->fc.dev, "txd err=%2x %s\n", 1097 stat, fwohcicode[stat]); 1098 err = EINVAL; 1099 break; 1100 } 1101 if (tr->xfer != NULL) { 1102 xfer = tr->xfer; 1103 if (xfer->state == FWXF_RCVD) { 1104 #if 0 1105 if (firewire_debug) 1106 kprintf("already rcvd\n"); 1107 #endif 1108 fw_xfer_done(xfer); 1109 } else { 1110 xfer->state = FWXF_SENT; 1111 if (err == EBUSY && fc->status != FWBUSRESET) { 1112 xfer->state = FWXF_BUSY; 1113 xfer->resp = err; 1114 if (xfer->retry_req != NULL) 1115 xfer->retry_req(xfer); 1116 else { 1117 xfer->recv.pay_len = 0; 1118 fw_xfer_done(xfer); 1119 } 1120 } else if (stat != FWOHCIEV_ACKPEND) { 1121 if (stat != FWOHCIEV_ACKCOMPL) 1122 xfer->state = FWXF_SENTERR; 1123 xfer->resp = err; 1124 xfer->recv.pay_len = 0; 1125 fw_xfer_done(xfer); 1126 } 1127 } 1128 /* 1129 * The watchdog timer takes care of split 1130 * transcation timeout for ACKPEND case. 1131 */ 1132 } else { 1133 kprintf("this shouldn't happen\n"); 1134 } 1135 dbch->xferq.queued --; 1136 tr->xfer = NULL; 1137 1138 packets ++; 1139 tr = STAILQ_NEXT(tr, link); 1140 dbch->bottom = tr; 1141 if (dbch->bottom == dbch->top) { 1142 /* we reaches the end of context program */ 1143 if (firewire_debug && dbch->xferq.queued > 0) 1144 kprintf("queued > 0\n"); 1145 break; 1146 } 1147 } 1148 out: 1149 if ((dbch->flags & FWOHCI_DBCH_FULL) && packets > 0) { 1150 kprintf("make free slot\n"); 1151 dbch->flags &= ~FWOHCI_DBCH_FULL; 1152 fwohci_start(sc, dbch); 1153 } 1154 crit_exit(); 1155 } 1156 1157 static void 1158 fwohci_db_free(struct fwohci_dbch *dbch) 1159 { 1160 struct fwohcidb_tr *db_tr; 1161 int idb; 1162 1163 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1164 return; 1165 1166 for(db_tr = STAILQ_FIRST(&dbch->db_trq), idb = 0; idb < dbch->ndb; 1167 db_tr = STAILQ_NEXT(db_tr, link), idb++){ 1168 if ((dbch->xferq.flag & FWXFERQ_EXTBUF) == 0 && 1169 db_tr->buf != NULL) { 1170 fwdma_free_size(dbch->dmat, db_tr->dma_map, 1171 db_tr->buf, dbch->xferq.psize); 1172 db_tr->buf = NULL; 1173 } else if (db_tr->dma_map != NULL) 1174 bus_dmamap_destroy(dbch->dmat, db_tr->dma_map); 1175 } 1176 dbch->ndb = 0; 1177 db_tr = STAILQ_FIRST(&dbch->db_trq); 1178 fwdma_free_multiseg(dbch->am); 1179 kfree(db_tr, M_FW); 1180 STAILQ_INIT(&dbch->db_trq); 1181 dbch->flags &= ~FWOHCI_DBCH_INIT; 1182 } 1183 1184 static void 1185 fwohci_db_init(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1186 { 1187 int idb; 1188 struct fwohcidb_tr *db_tr; 1189 1190 if ((dbch->flags & FWOHCI_DBCH_INIT) != 0) 1191 goto out; 1192 1193 /* create dma_tag for buffers */ 1194 #define MAX_REQCOUNT 0xffff 1195 if (bus_dma_tag_create(/*parent*/ sc->fc.dmat, 1196 /*alignment*/ 1, /*boundary*/ 0, 1197 /*lowaddr*/ BUS_SPACE_MAXADDR_32BIT, 1198 /*highaddr*/ BUS_SPACE_MAXADDR, 1199 /*filter*/NULL, /*filterarg*/NULL, 1200 /*maxsize*/ dbch->xferq.psize, 1201 /*nsegments*/ dbch->ndesc > 3 ? dbch->ndesc - 2 : 1, 1202 /*maxsegsz*/ MAX_REQCOUNT, 1203 /*flags*/ 0, 1204 #if defined(__FreeBSD__) && __FreeBSD_version >= 501102 1205 /*lockfunc*/busdma_lock_mutex, 1206 /*lockarg*/&Giant, 1207 #endif 1208 &dbch->dmat)) 1209 return; 1210 1211 /* allocate DB entries and attach one to each DMA channels */ 1212 /* DB entry must start at 16 bytes bounary. */ 1213 STAILQ_INIT(&dbch->db_trq); 1214 db_tr = (struct fwohcidb_tr *) 1215 kmalloc(sizeof(struct fwohcidb_tr) * dbch->ndb, 1216 M_FW, M_WAITOK | M_ZERO); 1217 1218 #define DB_SIZE(x) (sizeof(struct fwohcidb) * (x)->ndesc) 1219 dbch->am = fwdma_malloc_multiseg(&sc->fc, DB_SIZE(dbch), 1220 DB_SIZE(dbch), dbch->ndb, BUS_DMA_WAITOK); 1221 if (dbch->am == NULL) { 1222 kprintf("fwohci_db_init: fwdma_malloc_multiseg failed\n"); 1223 kfree(db_tr, M_FW); 1224 return; 1225 } 1226 /* Attach DB to DMA ch. */ 1227 for(idb = 0 ; idb < dbch->ndb ; idb++){ 1228 db_tr->dbcnt = 0; 1229 db_tr->db = (struct fwohcidb *)fwdma_v_addr(dbch->am, idb); 1230 db_tr->bus_addr = fwdma_bus_addr(dbch->am, idb); 1231 /* create dmamap for buffers */ 1232 /* XXX do we need 4bytes alignment tag? */ 1233 /* XXX don't alloc dma_map for AR */ 1234 if (bus_dmamap_create(dbch->dmat, 0, &db_tr->dma_map) != 0) { 1235 kprintf("bus_dmamap_create failed\n"); 1236 dbch->flags = FWOHCI_DBCH_INIT; /* XXX fake */ 1237 fwohci_db_free(dbch); 1238 return; 1239 } 1240 STAILQ_INSERT_TAIL(&dbch->db_trq, db_tr, link); 1241 if (dbch->xferq.flag & FWXFERQ_EXTBUF) { 1242 if (idb % dbch->xferq.bnpacket == 0) 1243 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1244 ].start = (caddr_t)db_tr; 1245 if ((idb + 1) % dbch->xferq.bnpacket == 0) 1246 dbch->xferq.bulkxfer[idb / dbch->xferq.bnpacket 1247 ].end = (caddr_t)db_tr; 1248 } 1249 db_tr++; 1250 } 1251 STAILQ_LAST(&dbch->db_trq, fwohcidb_tr,link)->link.stqe_next 1252 = STAILQ_FIRST(&dbch->db_trq); 1253 out: 1254 dbch->xferq.queued = 0; 1255 dbch->pdb_tr = NULL; 1256 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1257 dbch->bottom = dbch->top; 1258 dbch->flags = FWOHCI_DBCH_INIT; 1259 } 1260 1261 static int 1262 fwohci_itx_disable(struct firewire_comm *fc, int dmach) 1263 { 1264 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1265 int sleepch; 1266 1267 OWRITE(sc, OHCI_ITCTLCLR(dmach), 1268 OHCI_CNTL_DMA_RUN | OHCI_CNTL_CYCMATCH_S); 1269 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1270 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1271 /* XXX we cannot free buffers until the DMA really stops */ 1272 tsleep((void *)&sleepch, FWPRI, "fwitxd", hz); 1273 fwohci_db_free(&sc->it[dmach]); 1274 sc->it[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1275 return 0; 1276 } 1277 1278 static int 1279 fwohci_irx_disable(struct firewire_comm *fc, int dmach) 1280 { 1281 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1282 int sleepch; 1283 1284 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1285 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1286 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1287 /* XXX we cannot free buffers until the DMA really stops */ 1288 tsleep((void *)&sleepch, FWPRI, "fwirxd", hz); 1289 fwohci_db_free(&sc->ir[dmach]); 1290 sc->ir[dmach].xferq.flag &= ~FWXFERQ_RUNNING; 1291 return 0; 1292 } 1293 1294 #if BYTE_ORDER == BIG_ENDIAN 1295 static void 1296 fwohci_irx_post (struct firewire_comm *fc , u_int32_t *qld) 1297 { 1298 qld[0] = FWOHCI_DMA_READ(qld[0]); 1299 return; 1300 } 1301 #endif 1302 1303 static int 1304 fwohci_tx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1305 { 1306 int err = 0; 1307 int idb, z, i, dmach = 0, ldesc; 1308 u_int32_t off = 0; 1309 struct fwohcidb_tr *db_tr; 1310 struct fwohcidb *db; 1311 1312 if(!(dbch->xferq.flag & FWXFERQ_EXTBUF)){ 1313 err = EINVAL; 1314 return err; 1315 } 1316 z = dbch->ndesc; 1317 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1318 if( &sc->it[dmach] == dbch){ 1319 off = OHCI_ITOFF(dmach); 1320 break; 1321 } 1322 } 1323 if(off == 0){ 1324 err = EINVAL; 1325 return err; 1326 } 1327 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1328 return err; 1329 dbch->xferq.flag |= FWXFERQ_RUNNING; 1330 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1331 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1332 } 1333 db_tr = dbch->top; 1334 for (idb = 0; idb < dbch->ndb; idb ++) { 1335 fwohci_add_tx_buf(dbch, db_tr, idb); 1336 if(STAILQ_NEXT(db_tr, link) == NULL){ 1337 break; 1338 } 1339 db = db_tr->db; 1340 ldesc = db_tr->dbcnt - 1; 1341 FWOHCI_DMA_WRITE(db[0].db.desc.depend, 1342 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1343 db[ldesc].db.desc.depend = db[0].db.desc.depend; 1344 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1345 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1346 FWOHCI_DMA_SET( 1347 db[ldesc].db.desc.cmd, 1348 OHCI_INTERRUPT_ALWAYS); 1349 /* OHCI 1.1 and above */ 1350 FWOHCI_DMA_SET( 1351 db[0].db.desc.cmd, 1352 OHCI_INTERRUPT_ALWAYS); 1353 } 1354 } 1355 db_tr = STAILQ_NEXT(db_tr, link); 1356 } 1357 FWOHCI_DMA_CLEAR( 1358 dbch->bottom->db[dbch->bottom->dbcnt - 1].db.desc.depend, 0xf); 1359 return err; 1360 } 1361 1362 static int 1363 fwohci_rx_enable(struct fwohci_softc *sc, struct fwohci_dbch *dbch) 1364 { 1365 int err = 0; 1366 int idb, z, i, dmach = 0, ldesc; 1367 u_int32_t off = 0; 1368 struct fwohcidb_tr *db_tr; 1369 struct fwohcidb *db; 1370 1371 z = dbch->ndesc; 1372 if(&sc->arrq == dbch){ 1373 off = OHCI_ARQOFF; 1374 }else if(&sc->arrs == dbch){ 1375 off = OHCI_ARSOFF; 1376 }else{ 1377 for(dmach = 0 ; dmach < sc->fc.nisodma ; dmach++){ 1378 if( &sc->ir[dmach] == dbch){ 1379 off = OHCI_IROFF(dmach); 1380 break; 1381 } 1382 } 1383 } 1384 if(off == 0){ 1385 err = EINVAL; 1386 return err; 1387 } 1388 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1389 if(dbch->xferq.flag & FWXFERQ_RUNNING) 1390 return err; 1391 }else{ 1392 if(dbch->xferq.flag & FWXFERQ_RUNNING){ 1393 err = EBUSY; 1394 return err; 1395 } 1396 } 1397 dbch->xferq.flag |= FWXFERQ_RUNNING; 1398 dbch->top = STAILQ_FIRST(&dbch->db_trq); 1399 for( i = 0, dbch->bottom = dbch->top; i < (dbch->ndb - 1); i++){ 1400 dbch->bottom = STAILQ_NEXT(dbch->bottom, link); 1401 } 1402 db_tr = dbch->top; 1403 for (idb = 0; idb < dbch->ndb; idb ++) { 1404 fwohci_add_rx_buf(dbch, db_tr, idb, &sc->dummy_dma); 1405 if (STAILQ_NEXT(db_tr, link) == NULL) 1406 break; 1407 db = db_tr->db; 1408 ldesc = db_tr->dbcnt - 1; 1409 FWOHCI_DMA_WRITE(db[ldesc].db.desc.depend, 1410 STAILQ_NEXT(db_tr, link)->bus_addr | z); 1411 if(dbch->xferq.flag & FWXFERQ_EXTBUF){ 1412 if(((idb + 1 ) % dbch->xferq.bnpacket) == 0){ 1413 FWOHCI_DMA_SET( 1414 db[ldesc].db.desc.cmd, 1415 OHCI_INTERRUPT_ALWAYS); 1416 FWOHCI_DMA_CLEAR( 1417 db[ldesc].db.desc.depend, 1418 0xf); 1419 } 1420 } 1421 db_tr = STAILQ_NEXT(db_tr, link); 1422 } 1423 FWOHCI_DMA_CLEAR( 1424 dbch->bottom->db[db_tr->dbcnt - 1].db.desc.depend, 0xf); 1425 dbch->buf_offset = 0; 1426 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1427 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1428 if(dbch->xferq.flag & FWXFERQ_STREAM){ 1429 return err; 1430 }else{ 1431 OWRITE(sc, OHCI_DMACMD(off), dbch->top->bus_addr | z); 1432 } 1433 OWRITE(sc, OHCI_DMACTL(off), OHCI_CNTL_DMA_RUN); 1434 return err; 1435 } 1436 1437 static int 1438 fwohci_next_cycle(struct firewire_comm *fc, int cycle_now) 1439 { 1440 int sec, cycle, cycle_match; 1441 1442 cycle = cycle_now & 0x1fff; 1443 sec = cycle_now >> 13; 1444 #define CYCLE_MOD 0x10 1445 #if 1 1446 #define CYCLE_DELAY 8 /* min delay to start DMA */ 1447 #else 1448 #define CYCLE_DELAY 7000 /* min delay to start DMA */ 1449 #endif 1450 cycle = cycle + CYCLE_DELAY; 1451 if (cycle >= 8000) { 1452 sec ++; 1453 cycle -= 8000; 1454 } 1455 cycle = roundup2(cycle, CYCLE_MOD); 1456 if (cycle >= 8000) { 1457 sec ++; 1458 if (cycle == 8000) 1459 cycle = 0; 1460 else 1461 cycle = CYCLE_MOD; 1462 } 1463 cycle_match = ((sec << 13) | cycle) & 0x7ffff; 1464 1465 return(cycle_match); 1466 } 1467 1468 static int 1469 fwohci_itxbuf_enable(struct firewire_comm *fc, int dmach) 1470 { 1471 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1472 int err = 0; 1473 struct fwohci_dbch *dbch; 1474 int cycle_match, cycle_now, ldesc; 1475 u_int32_t stat; 1476 struct fw_bulkxfer *first, *chunk, *prev; 1477 struct fw_xferq *it; 1478 1479 dbch = &sc->it[dmach]; 1480 it = &dbch->xferq; 1481 1482 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) { 1483 dbch->ndb = it->bnpacket * it->bnchunk; 1484 dbch->ndesc = 3; 1485 fwohci_db_init(sc, dbch); 1486 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1487 return ENOMEM; 1488 err = fwohci_tx_enable(sc, dbch); 1489 } 1490 if(err) 1491 return err; 1492 1493 ldesc = dbch->ndesc - 1; 1494 crit_enter(); 1495 prev = STAILQ_LAST(&it->stdma, fw_bulkxfer, link); 1496 while ((chunk = STAILQ_FIRST(&it->stvalid)) != NULL) { 1497 struct fwohcidb *db; 1498 1499 fwdma_sync_multiseg(it->buf, chunk->poffset, it->bnpacket, 1500 BUS_DMASYNC_PREWRITE); 1501 fwohci_txbufdb(sc, dmach, chunk); 1502 if (prev != NULL) { 1503 db = ((struct fwohcidb_tr *)(prev->end))->db; 1504 #if 0 /* XXX necessary? */ 1505 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, 1506 OHCI_BRANCH_ALWAYS); 1507 #endif 1508 #if 0 /* if bulkxfer->npacket changes */ 1509 db[ldesc].db.desc.depend = db[0].db.desc.depend = 1510 ((struct fwohcidb_tr *) 1511 (chunk->start))->bus_addr | dbch->ndesc; 1512 #else 1513 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 1514 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1515 #endif 1516 } 1517 STAILQ_REMOVE_HEAD(&it->stvalid, link); 1518 STAILQ_INSERT_TAIL(&it->stdma, chunk, link); 1519 prev = chunk; 1520 } 1521 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1522 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1523 crit_exit(); 1524 stat = OREAD(sc, OHCI_ITCTL(dmach)); 1525 if (firewire_debug && (stat & OHCI_CNTL_CYCMATCH_S)) 1526 kprintf("stat 0x%x\n", stat); 1527 1528 if (stat & (OHCI_CNTL_DMA_ACTIVE | OHCI_CNTL_CYCMATCH_S)) 1529 return 0; 1530 1531 #if 0 1532 OWRITE(sc, OHCI_ITCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1533 #endif 1534 OWRITE(sc, OHCI_IT_MASKCLR, 1 << dmach); 1535 OWRITE(sc, OHCI_IT_STATCLR, 1 << dmach); 1536 OWRITE(sc, OHCI_IT_MASK, 1 << dmach); 1537 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IT); 1538 1539 first = STAILQ_FIRST(&it->stdma); 1540 OWRITE(sc, OHCI_ITCMD(dmach), 1541 ((struct fwohcidb_tr *)(first->start))->bus_addr | dbch->ndesc); 1542 if (firewire_debug) { 1543 kprintf("fwohci_itxbuf_enable: kick 0x%08x\n", stat); 1544 #if 1 1545 dump_dma(sc, ITX_CH + dmach); 1546 #endif 1547 } 1548 if ((stat & OHCI_CNTL_DMA_RUN) == 0) { 1549 #if 1 1550 /* Don't start until all chunks are buffered */ 1551 if (STAILQ_FIRST(&it->stfree) != NULL) 1552 goto out; 1553 #endif 1554 #if 1 1555 /* Clear cycle match counter bits */ 1556 OWRITE(sc, OHCI_ITCTLCLR(dmach), 0xffff0000); 1557 1558 /* 2bit second + 13bit cycle */ 1559 cycle_now = (fc->cyctimer(fc) >> 12) & 0x7fff; 1560 cycle_match = fwohci_next_cycle(fc, cycle_now); 1561 1562 OWRITE(sc, OHCI_ITCTL(dmach), 1563 OHCI_CNTL_CYCMATCH_S | (cycle_match << 16) 1564 | OHCI_CNTL_DMA_RUN); 1565 #else 1566 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_RUN); 1567 #endif 1568 if (firewire_debug) { 1569 kprintf("cycle_match: 0x%04x->0x%04x\n", 1570 cycle_now, cycle_match); 1571 dump_dma(sc, ITX_CH + dmach); 1572 dump_db(sc, ITX_CH + dmach); 1573 } 1574 } else if ((stat & OHCI_CNTL_CYCMATCH_S) == 0) { 1575 device_printf(sc->fc.dev, 1576 "IT DMA underrun (0x%08x)\n", stat); 1577 OWRITE(sc, OHCI_ITCTL(dmach), OHCI_CNTL_DMA_WAKE); 1578 } 1579 out: 1580 return err; 1581 } 1582 1583 static int 1584 fwohci_irx_enable(struct firewire_comm *fc, int dmach) 1585 { 1586 struct fwohci_softc *sc = (struct fwohci_softc *)fc; 1587 int err = 0, ldesc; 1588 unsigned short tag, ich; 1589 u_int32_t stat; 1590 struct fwohci_dbch *dbch; 1591 struct fwohcidb_tr *db_tr; 1592 struct fw_bulkxfer *first, *prev, *chunk; 1593 struct fw_xferq *ir; 1594 1595 dbch = &sc->ir[dmach]; 1596 ir = &dbch->xferq; 1597 1598 if ((ir->flag & FWXFERQ_RUNNING) == 0) { 1599 tag = (ir->flag >> 6) & 3; 1600 ich = ir->flag & 0x3f; 1601 OWRITE(sc, OHCI_IRMATCH(dmach), tagbit[tag] | ich); 1602 1603 ir->queued = 0; 1604 dbch->ndb = ir->bnpacket * ir->bnchunk; 1605 dbch->ndesc = 2; 1606 fwohci_db_init(sc, dbch); 1607 if ((dbch->flags & FWOHCI_DBCH_INIT) == 0) 1608 return ENOMEM; 1609 err = fwohci_rx_enable(sc, dbch); 1610 } 1611 if(err) 1612 return err; 1613 1614 first = STAILQ_FIRST(&ir->stfree); 1615 if (first == NULL) { 1616 device_printf(fc->dev, "IR DMA no free chunk\n"); 1617 return 0; 1618 } 1619 1620 ldesc = dbch->ndesc - 1; 1621 crit_enter(); 1622 prev = STAILQ_LAST(&ir->stdma, fw_bulkxfer, link); 1623 while ((chunk = STAILQ_FIRST(&ir->stfree)) != NULL) { 1624 struct fwohcidb *db; 1625 1626 #if 1 /* XXX for if_fwe */ 1627 if (chunk->mbuf != NULL) { 1628 db_tr = (struct fwohcidb_tr *)(chunk->start); 1629 db_tr->dbcnt = 1; 1630 err = bus_dmamap_load_mbuf(dbch->dmat, db_tr->dma_map, 1631 chunk->mbuf, fwohci_execute_db2, db_tr, 1632 /* flags */0); 1633 FWOHCI_DMA_SET(db_tr->db[1].db.desc.cmd, 1634 OHCI_UPDATE | OHCI_INPUT_LAST | 1635 OHCI_INTERRUPT_ALWAYS | OHCI_BRANCH_ALWAYS); 1636 } 1637 #endif 1638 db = ((struct fwohcidb_tr *)(chunk->end))->db; 1639 FWOHCI_DMA_WRITE(db[ldesc].db.desc.res, 0); 1640 FWOHCI_DMA_CLEAR(db[ldesc].db.desc.depend, 0xf); 1641 if (prev != NULL) { 1642 db = ((struct fwohcidb_tr *)(prev->end))->db; 1643 FWOHCI_DMA_SET(db[ldesc].db.desc.depend, dbch->ndesc); 1644 } 1645 STAILQ_REMOVE_HEAD(&ir->stfree, link); 1646 STAILQ_INSERT_TAIL(&ir->stdma, chunk, link); 1647 prev = chunk; 1648 } 1649 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 1650 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREREAD); 1651 crit_exit(); 1652 stat = OREAD(sc, OHCI_IRCTL(dmach)); 1653 if (stat & OHCI_CNTL_DMA_ACTIVE) 1654 return 0; 1655 if (stat & OHCI_CNTL_DMA_RUN) { 1656 OWRITE(sc, OHCI_IRCTLCLR(dmach), OHCI_CNTL_DMA_RUN); 1657 device_printf(sc->fc.dev, "IR DMA overrun (0x%08x)\n", stat); 1658 } 1659 1660 if (firewire_debug) 1661 kprintf("start IR DMA 0x%x\n", stat); 1662 OWRITE(sc, OHCI_IR_MASKCLR, 1 << dmach); 1663 OWRITE(sc, OHCI_IR_STATCLR, 1 << dmach); 1664 OWRITE(sc, OHCI_IR_MASK, 1 << dmach); 1665 OWRITE(sc, OHCI_IRCTLCLR(dmach), 0xf0000000); 1666 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_ISOHDR); 1667 OWRITE(sc, OHCI_IRCMD(dmach), 1668 ((struct fwohcidb_tr *)(first->start))->bus_addr 1669 | dbch->ndesc); 1670 OWRITE(sc, OHCI_IRCTL(dmach), OHCI_CNTL_DMA_RUN); 1671 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_DMA_IR); 1672 #if 0 1673 dump_db(sc, IRX_CH + dmach); 1674 #endif 1675 return err; 1676 } 1677 1678 int 1679 fwohci_stop(struct fwohci_softc *sc, device_t dev) 1680 { 1681 u_int i; 1682 1683 /* Now stopping all DMA channel */ 1684 OWRITE(sc, OHCI_ARQCTLCLR, OHCI_CNTL_DMA_RUN); 1685 OWRITE(sc, OHCI_ARSCTLCLR, OHCI_CNTL_DMA_RUN); 1686 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1687 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1688 1689 for( i = 0 ; i < sc->fc.nisodma ; i ++ ){ 1690 OWRITE(sc, OHCI_IRCTLCLR(i), OHCI_CNTL_DMA_RUN); 1691 OWRITE(sc, OHCI_ITCTLCLR(i), OHCI_CNTL_DMA_RUN); 1692 } 1693 1694 /* FLUSH FIFO and reset Transmitter/Reciever */ 1695 OWRITE(sc, OHCI_HCCCTL, OHCI_HCC_RESET); 1696 1697 /* Stop interrupt */ 1698 OWRITE(sc, FWOHCI_INTMASKCLR, 1699 OHCI_INT_EN | OHCI_INT_ERR | OHCI_INT_PHY_SID 1700 | OHCI_INT_PHY_INT 1701 | OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS 1702 | OHCI_INT_DMA_PRRQ | OHCI_INT_DMA_PRRS 1703 | OHCI_INT_DMA_ARRQ | OHCI_INT_DMA_ARRS 1704 | OHCI_INT_PHY_BUS_R); 1705 1706 if (sc->fc.arq != NULL && sc->fc.arq->maxq > 0) 1707 fw_drain_txq(&sc->fc); 1708 1709 /* XXX Link down? Bus reset? */ 1710 return 0; 1711 } 1712 1713 int 1714 fwohci_resume(struct fwohci_softc *sc, device_t dev) 1715 { 1716 int i; 1717 struct fw_xferq *ir; 1718 struct fw_bulkxfer *chunk; 1719 1720 fwohci_reset(sc, dev); 1721 /* XXX resume isochronus receive automatically. (how about TX?) */ 1722 for(i = 0; i < sc->fc.nisodma; i ++) { 1723 ir = &sc->ir[i].xferq; 1724 if((ir->flag & FWXFERQ_RUNNING) != 0) { 1725 device_printf(sc->fc.dev, 1726 "resume iso receive ch: %d\n", i); 1727 ir->flag &= ~FWXFERQ_RUNNING; 1728 /* requeue stdma to stfree */ 1729 while((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 1730 STAILQ_REMOVE_HEAD(&ir->stdma, link); 1731 STAILQ_INSERT_TAIL(&ir->stfree, chunk, link); 1732 } 1733 sc->fc.irx_enable(&sc->fc, i); 1734 } 1735 } 1736 1737 bus_generic_resume(dev); 1738 sc->fc.ibr(&sc->fc); 1739 return 0; 1740 } 1741 1742 #define ACK_ALL 1743 static void 1744 fwohci_intr_body(struct fwohci_softc *sc, u_int32_t stat, int count) 1745 { 1746 u_int32_t irstat, itstat; 1747 u_int i; 1748 struct firewire_comm *fc = (struct firewire_comm *)sc; 1749 1750 #ifdef FWOHCI_DEBUG 1751 if(stat & OREAD(sc, FWOHCI_INTMASK)) 1752 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", 1753 stat & OHCI_INT_EN ? "DMA_EN ":"", 1754 stat & OHCI_INT_PHY_REG ? "PHY_REG ":"", 1755 stat & OHCI_INT_CYC_LONG ? "CYC_LONG ":"", 1756 stat & OHCI_INT_ERR ? "INT_ERR ":"", 1757 stat & OHCI_INT_CYC_ERR ? "CYC_ERR ":"", 1758 stat & OHCI_INT_CYC_LOST ? "CYC_LOST ":"", 1759 stat & OHCI_INT_CYC_64SECOND ? "CYC_64SECOND ":"", 1760 stat & OHCI_INT_CYC_START ? "CYC_START ":"", 1761 stat & OHCI_INT_PHY_INT ? "PHY_INT ":"", 1762 stat & OHCI_INT_PHY_BUS_R ? "BUS_RESET ":"", 1763 stat & OHCI_INT_PHY_SID ? "SID ":"", 1764 stat & OHCI_INT_LR_ERR ? "DMA_LR_ERR ":"", 1765 stat & OHCI_INT_PW_ERR ? "DMA_PW_ERR ":"", 1766 stat & OHCI_INT_DMA_IR ? "DMA_IR ":"", 1767 stat & OHCI_INT_DMA_IT ? "DMA_IT " :"", 1768 stat & OHCI_INT_DMA_PRRS ? "DMA_PRRS " :"", 1769 stat & OHCI_INT_DMA_PRRQ ? "DMA_PRRQ " :"", 1770 stat & OHCI_INT_DMA_ARRS ? "DMA_ARRS " :"", 1771 stat & OHCI_INT_DMA_ARRQ ? "DMA_ARRQ " :"", 1772 stat & OHCI_INT_DMA_ATRS ? "DMA_ATRS " :"", 1773 stat & OHCI_INT_DMA_ATRQ ? "DMA_ATRQ " :"", 1774 stat, OREAD(sc, FWOHCI_INTMASK) 1775 ); 1776 #endif 1777 /* Bus reset */ 1778 if(stat & OHCI_INT_PHY_BUS_R ){ 1779 if (fc->status == FWBUSRESET) 1780 goto busresetout; 1781 /* Disable bus reset interrupt until sid recv. */ 1782 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_BUS_R); 1783 1784 device_printf(fc->dev, "BUS reset\n"); 1785 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_CYC_LOST); 1786 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCSRC); 1787 1788 OWRITE(sc, OHCI_ATQCTLCLR, OHCI_CNTL_DMA_RUN); 1789 sc->atrq.xferq.flag &= ~FWXFERQ_RUNNING; 1790 OWRITE(sc, OHCI_ATSCTLCLR, OHCI_CNTL_DMA_RUN); 1791 sc->atrs.xferq.flag &= ~FWXFERQ_RUNNING; 1792 1793 #ifndef ACK_ALL 1794 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_BUS_R); 1795 #endif 1796 fw_busreset(fc); 1797 OWRITE(sc, OHCI_CROMHDR, ntohl(sc->fc.config_rom[0])); 1798 OWRITE(sc, OHCI_BUS_OPT, ntohl(sc->fc.config_rom[2])); 1799 } 1800 busresetout: 1801 if((stat & OHCI_INT_DMA_IR )){ 1802 #ifndef ACK_ALL 1803 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IR); 1804 #endif 1805 irstat = atomic_readandclear_int(&sc->irstat); 1806 for(i = 0; i < fc->nisodma ; i++){ 1807 struct fwohci_dbch *dbch; 1808 1809 if((irstat & (1 << i)) != 0){ 1810 dbch = &sc->ir[i]; 1811 if ((dbch->xferq.flag & FWXFERQ_OPEN) == 0) { 1812 device_printf(sc->fc.dev, 1813 "dma(%d) not active\n", i); 1814 continue; 1815 } 1816 fwohci_rbuf_update(sc, i); 1817 } 1818 } 1819 } 1820 if((stat & OHCI_INT_DMA_IT )){ 1821 #ifndef ACK_ALL 1822 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_IT); 1823 #endif 1824 itstat = atomic_readandclear_int(&sc->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 u_int32_t *buf, node_id; 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 /* Allow async. request to us */ 1861 OWRITE(sc, OHCI_AREQHI, 1 << 31); 1862 /* XXX insecure ?? */ 1863 OWRITE(sc, OHCI_PREQHI, 0x7fffffff); 1864 OWRITE(sc, OHCI_PREQLO, 0xffffffff); 1865 OWRITE(sc, OHCI_PREQUPPER, 0x10000); 1866 /* Set ATRetries register */ 1867 OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff); 1868 /* 1869 ** Checking whether the node is root or not. If root, turn on 1870 ** cycle master. 1871 */ 1872 node_id = OREAD(sc, FWOHCI_NODEID); 1873 plen = OREAD(sc, OHCI_SID_CNT); 1874 1875 device_printf(fc->dev, "node_id=0x%08x, gen=%d, ", 1876 node_id, (plen >> 16) & 0xff); 1877 if (!(node_id & OHCI_NODE_VALID)) { 1878 kprintf("Bus reset failure\n"); 1879 goto sidout; 1880 } 1881 if (node_id & OHCI_NODE_ROOT) { 1882 kprintf("CYCLEMASTER mode\n"); 1883 OWRITE(sc, OHCI_LNKCTL, 1884 OHCI_CNTL_CYCMTR | OHCI_CNTL_CYCTIMER); 1885 } else { 1886 kprintf("non CYCLEMASTER mode\n"); 1887 OWRITE(sc, OHCI_LNKCTLCLR, OHCI_CNTL_CYCMTR); 1888 OWRITE(sc, OHCI_LNKCTL, OHCI_CNTL_CYCTIMER); 1889 } 1890 fc->nodeid = node_id & 0x3f; 1891 1892 if (plen & OHCI_SID_ERR) { 1893 device_printf(fc->dev, "SID Error\n"); 1894 goto sidout; 1895 } 1896 plen &= OHCI_SID_CNT_MASK; 1897 if (plen < 4 || plen > OHCI_SIDSIZE) { 1898 device_printf(fc->dev, "invalid SID len = %d\n", plen); 1899 goto sidout; 1900 } 1901 plen -= 4; /* chop control info */ 1902 buf = (u_int32_t *)kmalloc(OHCI_SIDSIZE, M_FW, M_INTWAIT); 1903 if (buf == NULL) { 1904 device_printf(fc->dev, "malloc failed\n"); 1905 goto sidout; 1906 } 1907 for (i = 0; i < plen / 4; i ++) 1908 buf[i] = FWOHCI_DMA_READ(sc->sid_buf[i+1]); 1909 #if 1 1910 /* pending all pre-bus_reset packets */ 1911 fwohci_txd(sc, &sc->atrq); 1912 fwohci_txd(sc, &sc->atrs); 1913 fwohci_arcv(sc, &sc->arrs, -1); 1914 fwohci_arcv(sc, &sc->arrq, -1); 1915 fw_drain_txq(fc); 1916 #endif 1917 fw_sidrcv(fc, buf, plen); 1918 kfree(buf, M_FW); 1919 } 1920 sidout: 1921 if((stat & OHCI_INT_DMA_ATRQ )){ 1922 #ifndef ACK_ALL 1923 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRQ); 1924 #endif 1925 fwohci_txd(sc, &(sc->atrq)); 1926 } 1927 if((stat & OHCI_INT_DMA_ATRS )){ 1928 #ifndef ACK_ALL 1929 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_DMA_ATRS); 1930 #endif 1931 fwohci_txd(sc, &(sc->atrs)); 1932 } 1933 if((stat & OHCI_INT_PW_ERR )){ 1934 #ifndef ACK_ALL 1935 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PW_ERR); 1936 #endif 1937 /* permanently mask unsupported interrupt source */ 1938 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PW_ERR); 1939 device_printf(fc->dev, "posted write error\n"); 1940 } 1941 if((stat & OHCI_INT_ERR )){ 1942 #ifndef ACK_ALL 1943 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_ERR); 1944 #endif 1945 /* permanently mask unsupported interrupt source */ 1946 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_ERR); 1947 device_printf(fc->dev, "unrecoverable error\n"); 1948 } 1949 if((stat & OHCI_INT_PHY_INT)) { 1950 #ifndef ACK_ALL 1951 OWRITE(sc, FWOHCI_INTSTATCLR, OHCI_INT_PHY_INT); 1952 #endif 1953 /* permanently mask unsupported interrupt source */ 1954 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_PHY_INT); 1955 /*device_printf(fc->dev, "phy int\n");*/ 1956 } 1957 1958 return; 1959 } 1960 1961 #if FWOHCI_TASKQUEUE 1962 static void 1963 fwohci_complete(void *arg, int pending) 1964 { 1965 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 1966 u_int32_t stat; 1967 1968 again: 1969 stat = atomic_readandclear_int(&sc->intstat); 1970 if (stat) 1971 fwohci_intr_body(sc, stat, -1); 1972 else 1973 return; 1974 goto again; 1975 } 1976 #endif 1977 1978 static u_int32_t 1979 fwochi_check_stat(struct fwohci_softc *sc) 1980 { 1981 u_int32_t stat, irstat, itstat; 1982 1983 stat = OREAD(sc, FWOHCI_INTSTAT); 1984 if (stat == 0xffffffff) { 1985 device_printf(sc->fc.dev, 1986 "device physically ejected?\n"); 1987 return(stat); 1988 } 1989 #ifdef ACK_ALL 1990 if (stat) 1991 OWRITE(sc, FWOHCI_INTSTATCLR, stat); 1992 #endif 1993 if (stat & OHCI_INT_DMA_IR) { 1994 irstat = OREAD(sc, OHCI_IR_STAT); 1995 OWRITE(sc, OHCI_IR_STATCLR, irstat); 1996 atomic_set_int(&sc->irstat, irstat); 1997 } 1998 if (stat & OHCI_INT_DMA_IT) { 1999 itstat = OREAD(sc, OHCI_IT_STAT); 2000 OWRITE(sc, OHCI_IT_STATCLR, itstat); 2001 atomic_set_int(&sc->itstat, itstat); 2002 } 2003 return(stat); 2004 } 2005 2006 void 2007 fwohci_intr(void *arg) 2008 { 2009 struct fwohci_softc *sc = (struct fwohci_softc *)arg; 2010 u_int32_t stat; 2011 #if !FWOHCI_TASKQUEUE 2012 u_int32_t bus_reset = 0; 2013 #endif 2014 2015 if (!(sc->intmask & OHCI_INT_EN)) { 2016 /* polling mode */ 2017 return; 2018 } 2019 2020 #if !FWOHCI_TASKQUEUE 2021 again: 2022 #endif 2023 stat = fwochi_check_stat(sc); 2024 if (stat == 0 || stat == 0xffffffff) 2025 return; 2026 #if FWOHCI_TASKQUEUE 2027 atomic_set_int(&sc->intstat, stat); 2028 /* XXX mask bus reset intr. during bus reset phase */ 2029 if (stat) 2030 taskqueue_enqueue(taskqueue_swi_giant, &sc->fwohci_task_complete); 2031 #else 2032 /* We cannot clear bus reset event during bus reset phase */ 2033 if ((stat & ~bus_reset) == 0) 2034 return; 2035 bus_reset = stat & OHCI_INT_PHY_BUS_R; 2036 fwohci_intr_body(sc, stat, -1); 2037 goto again; 2038 #endif 2039 } 2040 2041 void 2042 fwohci_poll(struct firewire_comm *fc, int quick, int count) 2043 { 2044 u_int32_t stat; 2045 struct fwohci_softc *sc; 2046 2047 2048 sc = (struct fwohci_softc *)fc; 2049 stat = OHCI_INT_DMA_IR | OHCI_INT_DMA_IT | 2050 OHCI_INT_DMA_PRRS | OHCI_INT_DMA_PRRQ | 2051 OHCI_INT_DMA_ATRQ | OHCI_INT_DMA_ATRS; 2052 #if 0 2053 if (!quick) { 2054 #else 2055 if (1) { 2056 #endif 2057 stat = fwochi_check_stat(sc); 2058 if (stat == 0 || stat == 0xffffffff) 2059 return; 2060 } 2061 crit_enter(); 2062 fwohci_intr_body(sc, stat, count); 2063 crit_exit(); 2064 } 2065 2066 static void 2067 fwohci_set_intr(struct firewire_comm *fc, int enable) 2068 { 2069 struct fwohci_softc *sc; 2070 2071 sc = (struct fwohci_softc *)fc; 2072 if (bootverbose) 2073 device_printf(sc->fc.dev, "fwohci_set_intr: %d\n", enable); 2074 if (enable) { 2075 sc->intmask |= OHCI_INT_EN; 2076 OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_EN); 2077 } else { 2078 sc->intmask &= ~OHCI_INT_EN; 2079 OWRITE(sc, FWOHCI_INTMASKCLR, OHCI_INT_EN); 2080 } 2081 } 2082 2083 static void 2084 fwohci_tbuf_update(struct fwohci_softc *sc, int dmach) 2085 { 2086 struct firewire_comm *fc = &sc->fc; 2087 struct fwohcidb *db; 2088 struct fw_bulkxfer *chunk; 2089 struct fw_xferq *it; 2090 u_int32_t stat, count; 2091 int w=0, ldesc; 2092 2093 it = fc->it[dmach]; 2094 ldesc = sc->it[dmach].ndesc - 1; 2095 crit_enter(); /* unnecessary? */ 2096 fwdma_sync_multiseg_all(sc->it[dmach].am, BUS_DMASYNC_POSTREAD); 2097 if (firewire_debug) 2098 dump_db(sc, ITX_CH + dmach); 2099 while ((chunk = STAILQ_FIRST(&it->stdma)) != NULL) { 2100 db = ((struct fwohcidb_tr *)(chunk->end))->db; 2101 stat = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2102 >> OHCI_STATUS_SHIFT; 2103 db = ((struct fwohcidb_tr *)(chunk->start))->db; 2104 /* timestamp */ 2105 count = FWOHCI_DMA_READ(db[ldesc].db.desc.res) 2106 & OHCI_COUNT_MASK; 2107 if (stat == 0) 2108 break; 2109 STAILQ_REMOVE_HEAD(&it->stdma, link); 2110 switch (stat & FWOHCIEV_MASK){ 2111 case FWOHCIEV_ACKCOMPL: 2112 #if 0 2113 device_printf(fc->dev, "0x%08x\n", count); 2114 #endif 2115 break; 2116 default: 2117 device_printf(fc->dev, 2118 "Isochronous transmit err %02x(%s)\n", 2119 stat, fwohcicode[stat & 0x1f]); 2120 } 2121 STAILQ_INSERT_TAIL(&it->stfree, chunk, link); 2122 w++; 2123 } 2124 crit_exit(); 2125 if (w) 2126 wakeup(it); 2127 } 2128 2129 static void 2130 fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) 2131 { 2132 struct firewire_comm *fc = &sc->fc; 2133 struct fwohcidb_tr *db_tr; 2134 struct fw_bulkxfer *chunk; 2135 struct fw_xferq *ir; 2136 u_int32_t stat; 2137 int w=0, ldesc; 2138 2139 ir = fc->ir[dmach]; 2140 ldesc = sc->ir[dmach].ndesc - 1; 2141 #if 0 2142 dump_db(sc, dmach); 2143 #endif 2144 crit_enter(); 2145 fwdma_sync_multiseg_all(sc->ir[dmach].am, BUS_DMASYNC_POSTREAD); 2146 while ((chunk = STAILQ_FIRST(&ir->stdma)) != NULL) { 2147 db_tr = (struct fwohcidb_tr *)chunk->end; 2148 stat = FWOHCI_DMA_READ(db_tr->db[ldesc].db.desc.res) 2149 >> OHCI_STATUS_SHIFT; 2150 if (stat == 0) 2151 break; 2152 2153 if (chunk->mbuf != NULL) { 2154 bus_dmamap_sync(sc->ir[dmach].dmat, db_tr->dma_map, 2155 BUS_DMASYNC_POSTREAD); 2156 bus_dmamap_unload(sc->ir[dmach].dmat, db_tr->dma_map); 2157 } else if (ir->buf != NULL) { 2158 fwdma_sync_multiseg(ir->buf, chunk->poffset, 2159 ir->bnpacket, BUS_DMASYNC_POSTREAD); 2160 } else { 2161 /* XXX */ 2162 kprintf("fwohci_rbuf_update: this shouldn't happen\n"); 2163 } 2164 2165 STAILQ_REMOVE_HEAD(&ir->stdma, link); 2166 STAILQ_INSERT_TAIL(&ir->stvalid, chunk, link); 2167 switch (stat & FWOHCIEV_MASK) { 2168 case FWOHCIEV_ACKCOMPL: 2169 chunk->resp = 0; 2170 break; 2171 default: 2172 chunk->resp = EINVAL; 2173 device_printf(fc->dev, 2174 "Isochronous receive err %02x(%s)\n", 2175 stat, fwohcicode[stat & 0x1f]); 2176 } 2177 w++; 2178 } 2179 crit_exit(); 2180 if (w) { 2181 if (ir->flag & FWXFERQ_HANDLER) 2182 ir->hand(ir); 2183 else 2184 wakeup(ir); 2185 } 2186 } 2187 2188 static void 2189 dump_dma(struct fwohci_softc *sc, u_int32_t ch) 2190 { 2191 u_int32_t off, cntl, stat, cmd, match; 2192 2193 if(ch == 0){ 2194 off = OHCI_ATQOFF; 2195 }else if(ch == 1){ 2196 off = OHCI_ATSOFF; 2197 }else if(ch == 2){ 2198 off = OHCI_ARQOFF; 2199 }else if(ch == 3){ 2200 off = OHCI_ARSOFF; 2201 }else if(ch < IRX_CH){ 2202 off = OHCI_ITCTL(ch - ITX_CH); 2203 }else{ 2204 off = OHCI_IRCTL(ch - IRX_CH); 2205 } 2206 cntl = stat = OREAD(sc, off); 2207 cmd = OREAD(sc, off + 0xc); 2208 match = OREAD(sc, off + 0x10); 2209 2210 device_printf(sc->fc.dev, "ch %1x cntl:0x%08x cmd:0x%08x match:0x%08x\n", 2211 ch, 2212 cntl, 2213 cmd, 2214 match); 2215 stat &= 0xffff ; 2216 if (stat) { 2217 device_printf(sc->fc.dev, "dma %d ch:%s%s%s%s%s%s %s(%x)\n", 2218 ch, 2219 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2220 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2221 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2222 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2223 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2224 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2225 fwohcicode[stat & 0x1f], 2226 stat & 0x1f 2227 ); 2228 }else{ 2229 device_printf(sc->fc.dev, "dma %d ch: Nostat\n", ch); 2230 } 2231 } 2232 2233 static void 2234 dump_db(struct fwohci_softc *sc, u_int32_t ch) 2235 { 2236 struct fwohci_dbch *dbch; 2237 struct fwohcidb_tr *cp = NULL, *pp, *np = NULL; 2238 struct fwohcidb *curr = NULL; 2239 #if 0 2240 struct fwohcidb *prev, *next = NULL; 2241 #endif 2242 int idb, jdb; 2243 u_int32_t cmd, off; 2244 if(ch == 0){ 2245 off = OHCI_ATQOFF; 2246 dbch = &sc->atrq; 2247 }else if(ch == 1){ 2248 off = OHCI_ATSOFF; 2249 dbch = &sc->atrs; 2250 }else if(ch == 2){ 2251 off = OHCI_ARQOFF; 2252 dbch = &sc->arrq; 2253 }else if(ch == 3){ 2254 off = OHCI_ARSOFF; 2255 dbch = &sc->arrs; 2256 }else if(ch < IRX_CH){ 2257 off = OHCI_ITCTL(ch - ITX_CH); 2258 dbch = &sc->it[ch - ITX_CH]; 2259 }else { 2260 off = OHCI_IRCTL(ch - IRX_CH); 2261 dbch = &sc->ir[ch - IRX_CH]; 2262 } 2263 cmd = OREAD(sc, off + 0xc); 2264 2265 if( dbch->ndb == 0 ){ 2266 device_printf(sc->fc.dev, "No DB is attached ch=%d\n", ch); 2267 return; 2268 } 2269 pp = dbch->top; 2270 #if 0 2271 prev = pp->db; 2272 #endif 2273 for(idb = 0 ; idb < dbch->ndb ; idb ++ ){ 2274 if(pp == NULL){ 2275 curr = NULL; 2276 goto outdb; 2277 } 2278 cp = STAILQ_NEXT(pp, link); 2279 if(cp == NULL){ 2280 curr = NULL; 2281 goto outdb; 2282 } 2283 np = STAILQ_NEXT(cp, link); 2284 for(jdb = 0 ; jdb < dbch->ndesc ; jdb ++ ){ 2285 if ((cmd & 0xfffffff0) == cp->bus_addr) { 2286 curr = cp->db; 2287 #if 0 2288 if(np != NULL){ 2289 next = np->db; 2290 }else{ 2291 next = NULL; 2292 } 2293 #endif 2294 goto outdb; 2295 } 2296 } 2297 pp = STAILQ_NEXT(pp, link); 2298 #if 0 2299 prev = pp->db; 2300 #endif 2301 } 2302 outdb: 2303 if( curr != NULL){ 2304 #if 0 2305 kprintf("Prev DB %d\n", ch); 2306 print_db(pp, prev, ch, dbch->ndesc); 2307 #endif 2308 kprintf("Current DB %d\n", ch); 2309 print_db(cp, curr, ch, dbch->ndesc); 2310 #if 0 2311 kprintf("Next DB %d\n", ch); 2312 print_db(np, next, ch, dbch->ndesc); 2313 #endif 2314 }else{ 2315 kprintf("dbdump err ch = %d cmd = 0x%08x\n", ch, cmd); 2316 } 2317 return; 2318 } 2319 2320 static void 2321 print_db(struct fwohcidb_tr *db_tr, struct fwohcidb *db, 2322 u_int32_t ch, u_int32_t max) 2323 { 2324 fwohcireg_t stat; 2325 int i, key; 2326 u_int32_t cmd, res; 2327 2328 if(db == NULL){ 2329 kprintf("No Descriptor is found\n"); 2330 return; 2331 } 2332 2333 kprintf("ch = %d\n%8s %s %s %s %s %4s %8s %8s %4s:%4s\n", 2334 ch, 2335 "Current", 2336 "OP ", 2337 "KEY", 2338 "INT", 2339 "BR ", 2340 "len", 2341 "Addr", 2342 "Depend", 2343 "Stat", 2344 "Cnt"); 2345 for( i = 0 ; i <= max ; i ++){ 2346 cmd = FWOHCI_DMA_READ(db[i].db.desc.cmd); 2347 res = FWOHCI_DMA_READ(db[i].db.desc.res); 2348 key = cmd & OHCI_KEY_MASK; 2349 stat = res >> OHCI_STATUS_SHIFT; 2350 kprintf("%08jx %s %s %s %s %5d %08lx %08lx %04x:%04x", 2351 (uintmax_t)db_tr->bus_addr, 2352 dbcode[(cmd >> 28) & 0xf], 2353 dbkey[(cmd >> 24) & 0x7], 2354 dbcond[(cmd >> 20) & 0x3], 2355 dbcond[(cmd >> 18) & 0x3], 2356 cmd & OHCI_COUNT_MASK, 2357 (u_long)FWOHCI_DMA_READ(db[i].db.desc.addr), 2358 (u_long)FWOHCI_DMA_READ(db[i].db.desc.depend), 2359 (u_int)stat, 2360 (u_int)(res & OHCI_COUNT_MASK)); 2361 if(stat & 0xff00){ 2362 kprintf(" %s%s%s%s%s%s %s(%x)\n", 2363 stat & OHCI_CNTL_DMA_RUN ? "RUN," : "", 2364 stat & OHCI_CNTL_DMA_WAKE ? "WAKE," : "", 2365 stat & OHCI_CNTL_DMA_DEAD ? "DEAD," : "", 2366 stat & OHCI_CNTL_DMA_ACTIVE ? "ACTIVE," : "", 2367 stat & OHCI_CNTL_DMA_BT ? "BRANCH," : "", 2368 stat & OHCI_CNTL_DMA_BAD ? "BADDMA," : "", 2369 fwohcicode[stat & 0x1f], 2370 stat & 0x1f 2371 ); 2372 }else{ 2373 kprintf(" Nostat\n"); 2374 } 2375 if(key == OHCI_KEY_ST2 ){ 2376 kprintf("0x%08x 0x%08x 0x%08x 0x%08x\n", 2377 FWOHCI_DMA_READ(db[i+1].db.immed[0]), 2378 FWOHCI_DMA_READ(db[i+1].db.immed[1]), 2379 FWOHCI_DMA_READ(db[i+1].db.immed[2]), 2380 FWOHCI_DMA_READ(db[i+1].db.immed[3])); 2381 } 2382 if(key == OHCI_KEY_DEVICE){ 2383 return; 2384 } 2385 if((cmd & OHCI_BRANCH_MASK) 2386 == OHCI_BRANCH_ALWAYS){ 2387 return; 2388 } 2389 if((cmd & OHCI_CMD_MASK) 2390 == OHCI_OUTPUT_LAST){ 2391 return; 2392 } 2393 if((cmd & OHCI_CMD_MASK) 2394 == OHCI_INPUT_LAST){ 2395 return; 2396 } 2397 if(key == OHCI_KEY_ST2 ){ 2398 i++; 2399 } 2400 } 2401 return; 2402 } 2403 2404 static void 2405 fwohci_ibr(struct firewire_comm *fc) 2406 { 2407 struct fwohci_softc *sc; 2408 u_int32_t fun; 2409 2410 device_printf(fc->dev, "Initiate bus reset\n"); 2411 sc = (struct fwohci_softc *)fc; 2412 2413 /* 2414 * Set root hold-off bit so that non cyclemaster capable node 2415 * shouldn't became the root node. 2416 */ 2417 #if 1 2418 fun = fwphy_rddata(sc, FW_PHY_IBR_REG); 2419 fun |= FW_PHY_IBR | FW_PHY_RHB; 2420 fun = fwphy_wrdata(sc, FW_PHY_IBR_REG, fun); 2421 #else /* Short bus reset */ 2422 fun = fwphy_rddata(sc, FW_PHY_ISBR_REG); 2423 fun |= FW_PHY_ISBR | FW_PHY_RHB; 2424 fun = fwphy_wrdata(sc, FW_PHY_ISBR_REG, fun); 2425 #endif 2426 } 2427 2428 void 2429 fwohci_txbufdb(struct fwohci_softc *sc, int dmach, struct fw_bulkxfer *bulkxfer) 2430 { 2431 struct fwohcidb_tr *db_tr; 2432 #if 0 2433 struct fwohcidb_tr *fdb_tr; 2434 #endif 2435 struct fwohci_dbch *dbch; 2436 struct fwohcidb *db; 2437 struct fw_pkt *fp; 2438 struct fwohci_txpkthdr *ohcifp; 2439 unsigned short chtag; 2440 int idb; 2441 2442 dbch = &sc->it[dmach]; 2443 chtag = sc->it[dmach].xferq.flag & 0xff; 2444 2445 db_tr = (struct fwohcidb_tr *)(bulkxfer->start); 2446 #if 0 2447 fdb_tr = (struct fwohcidb_tr *)(bulkxfer->end); 2448 device_printf(sc->fc.dev, "DB %08x %08x %08x\n", bulkxfer, 2449 db_tr->bus_addr, fdb_tr->bus_addr); 2450 #endif 2451 for (idb = 0; idb < dbch->xferq.bnpacket; idb ++) { 2452 db = db_tr->db; 2453 fp = (struct fw_pkt *)db_tr->buf; 2454 ohcifp = (struct fwohci_txpkthdr *) db[1].db.immed; 2455 ohcifp->mode.ld[0] = fp->mode.ld[0]; 2456 ohcifp->mode.common.spd = 0 & 0x7; 2457 ohcifp->mode.stream.len = fp->mode.stream.len; 2458 ohcifp->mode.stream.chtag = chtag; 2459 ohcifp->mode.stream.tcode = 0xa; 2460 #if BYTE_ORDER == BIG_ENDIAN 2461 FWOHCI_DMA_WRITE(db[1].db.immed[0], db[1].db.immed[0]); 2462 FWOHCI_DMA_WRITE(db[1].db.immed[1], db[1].db.immed[1]); 2463 #endif 2464 2465 FWOHCI_DMA_CLEAR(db[2].db.desc.cmd, OHCI_COUNT_MASK); 2466 FWOHCI_DMA_SET(db[2].db.desc.cmd, fp->mode.stream.len); 2467 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2468 #if 0 /* if bulkxfer->npackets changes */ 2469 db[2].db.desc.cmd = OHCI_OUTPUT_LAST 2470 | OHCI_UPDATE 2471 | OHCI_BRANCH_ALWAYS; 2472 db[0].db.desc.depend = 2473 = db[dbch->ndesc - 1].db.desc.depend 2474 = STAILQ_NEXT(db_tr, link)->bus_addr | dbch->ndesc; 2475 #else 2476 FWOHCI_DMA_SET(db[0].db.desc.depend, dbch->ndesc); 2477 FWOHCI_DMA_SET(db[dbch->ndesc - 1].db.desc.depend, dbch->ndesc); 2478 #endif 2479 bulkxfer->end = (caddr_t)db_tr; 2480 db_tr = STAILQ_NEXT(db_tr, link); 2481 } 2482 db = ((struct fwohcidb_tr *)bulkxfer->end)->db; 2483 FWOHCI_DMA_CLEAR(db[0].db.desc.depend, 0xf); 2484 FWOHCI_DMA_CLEAR(db[dbch->ndesc - 1].db.desc.depend, 0xf); 2485 #if 0 /* if bulkxfer->npackets changes */ 2486 db[dbch->ndesc - 1].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2487 /* OHCI 1.1 and above */ 2488 db[0].db.desc.control |= OHCI_INTERRUPT_ALWAYS; 2489 #endif 2490 /* 2491 db_tr = (struct fwohcidb_tr *)bulkxfer->start; 2492 fdb_tr = (struct fwohcidb_tr *)bulkxfer->end; 2493 device_printf(sc->fc.dev, "DB %08x %3d %08x %08x\n", bulkxfer, bulkxfer->npacket, db_tr->bus_addr, fdb_tr->bus_addr); 2494 */ 2495 return; 2496 } 2497 2498 static int 2499 fwohci_add_tx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2500 int poffset) 2501 { 2502 struct fwohcidb *db = db_tr->db; 2503 struct fw_xferq *it; 2504 int err = 0; 2505 2506 it = &dbch->xferq; 2507 if(it->buf == NULL) { 2508 err = EINVAL; 2509 return err; 2510 } 2511 db_tr->buf = fwdma_v_addr(it->buf, poffset); 2512 db_tr->dbcnt = 3; 2513 2514 FWOHCI_DMA_WRITE(db[0].db.desc.cmd, 2515 OHCI_OUTPUT_MORE | OHCI_KEY_ST2 | 8); 2516 FWOHCI_DMA_WRITE(db[0].db.desc.addr, 0); 2517 bzero((void *)&db[1].db.immed[0], sizeof(db[1].db.immed)); 2518 FWOHCI_DMA_WRITE(db[2].db.desc.addr, 2519 fwdma_bus_addr(it->buf, poffset) + sizeof(u_int32_t)); 2520 2521 FWOHCI_DMA_WRITE(db[2].db.desc.cmd, 2522 OHCI_OUTPUT_LAST | OHCI_UPDATE | OHCI_BRANCH_ALWAYS); 2523 #if 1 2524 FWOHCI_DMA_WRITE(db[0].db.desc.res, 0); 2525 FWOHCI_DMA_WRITE(db[2].db.desc.res, 0); 2526 #endif 2527 return 0; 2528 } 2529 2530 static int 2531 fwohci_add_rx_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr, 2532 int poffset, struct fwdma_alloc *dummy_dma) 2533 { 2534 struct fwohcidb *db = db_tr->db; 2535 struct fw_xferq *ir; 2536 int i, ldesc; 2537 bus_addr_t dbuf[2]; 2538 int dsiz[2]; 2539 2540 ir = &dbch->xferq; 2541 if (ir->buf == NULL && (dbch->xferq.flag & FWXFERQ_EXTBUF) == 0) { 2542 db_tr->buf = fwdma_malloc_size(dbch->dmat, &db_tr->dma_map, 2543 ir->psize, &dbuf[0], BUS_DMA_NOWAIT); 2544 if (db_tr->buf == NULL) 2545 return(ENOMEM); 2546 db_tr->dbcnt = 1; 2547 dsiz[0] = ir->psize; 2548 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2549 BUS_DMASYNC_PREREAD); 2550 } else { 2551 db_tr->dbcnt = 0; 2552 if (dummy_dma != NULL) { 2553 dsiz[db_tr->dbcnt] = sizeof(u_int32_t); 2554 dbuf[db_tr->dbcnt++] = dummy_dma->bus_addr; 2555 } 2556 dsiz[db_tr->dbcnt] = ir->psize; 2557 if (ir->buf != NULL) { 2558 db_tr->buf = fwdma_v_addr(ir->buf, poffset); 2559 dbuf[db_tr->dbcnt] = fwdma_bus_addr( ir->buf, poffset); 2560 } 2561 db_tr->dbcnt++; 2562 } 2563 for(i = 0 ; i < db_tr->dbcnt ; i++){ 2564 FWOHCI_DMA_WRITE(db[i].db.desc.addr, dbuf[i]); 2565 FWOHCI_DMA_WRITE(db[i].db.desc.cmd, OHCI_INPUT_MORE | dsiz[i]); 2566 if (ir->flag & FWXFERQ_STREAM) { 2567 FWOHCI_DMA_SET(db[i].db.desc.cmd, OHCI_UPDATE); 2568 } 2569 FWOHCI_DMA_WRITE(db[i].db.desc.res, dsiz[i]); 2570 } 2571 ldesc = db_tr->dbcnt - 1; 2572 if (ir->flag & FWXFERQ_STREAM) { 2573 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_INPUT_LAST); 2574 } 2575 FWOHCI_DMA_SET(db[ldesc].db.desc.cmd, OHCI_BRANCH_ALWAYS); 2576 return 0; 2577 } 2578 2579 2580 static int 2581 fwohci_arcv_swap(struct fw_pkt *fp, int len) 2582 { 2583 struct fw_pkt *fp0; 2584 u_int32_t ld0; 2585 int hlen; 2586 #if BYTE_ORDER == BIG_ENDIAN 2587 int slen, i; 2588 #endif 2589 2590 ld0 = FWOHCI_DMA_READ(fp->mode.ld[0]); 2591 #if 0 2592 kprintf("ld0: x%08x\n", ld0); 2593 #endif 2594 fp0 = (struct fw_pkt *)&ld0; 2595 /* determine length to swap */ 2596 switch (fp0->mode.common.tcode) { 2597 case FWTCODE_RREQQ: 2598 case FWTCODE_WRES: 2599 case FWTCODE_WREQQ: 2600 case FWTCODE_RRESQ: 2601 case FWOHCITCODE_PHY: 2602 #if BYTE_ORDER == BIG_ENDIAN 2603 slen = 12; 2604 break; 2605 #endif 2606 case FWTCODE_RREQB: 2607 case FWTCODE_WREQB: 2608 case FWTCODE_LREQ: 2609 case FWTCODE_RRESB: 2610 case FWTCODE_LRES: 2611 #if BYTE_ORDER == BIG_ENDIAN 2612 slen = 16; 2613 break; 2614 #endif 2615 default: 2616 kprintf("Unknown tcode %d\n", fp0->mode.common.tcode); 2617 return(0); 2618 } 2619 hlen = tinfo[fp0->mode.common.tcode].hdr_len; 2620 if (hlen > len) { 2621 if (firewire_debug) 2622 kprintf("split header\n"); 2623 return(-hlen); 2624 } 2625 #if BYTE_ORDER == BIG_ENDIAN 2626 for(i = 0; i < slen/4; i ++) 2627 fp->mode.ld[i] = FWOHCI_DMA_READ(fp->mode.ld[i]); 2628 #endif 2629 return(hlen); 2630 } 2631 2632 static int 2633 fwohci_get_plen(struct fwohci_softc *sc, struct fwohci_dbch *dbch, struct fw_pkt *fp) 2634 { 2635 struct tcode_info *info; 2636 int r; 2637 2638 info = &tinfo[fp->mode.common.tcode]; 2639 r = info->hdr_len + sizeof(u_int32_t); 2640 if ((info->flag & FWTI_BLOCK_ASY) != 0) 2641 r += roundup2(fp->mode.wreqb.len, sizeof(u_int32_t)); 2642 2643 if (r == sizeof(u_int32_t)) 2644 /* XXX */ 2645 device_printf(sc->fc.dev, "Unknown tcode %d\n", 2646 fp->mode.common.tcode); 2647 2648 if (r > dbch->xferq.psize) { 2649 device_printf(sc->fc.dev, "Invalid packet length %d\n", r); 2650 /* panic ? */ 2651 } 2652 2653 return r; 2654 } 2655 2656 static void 2657 fwohci_arcv_free_buf(struct fwohci_dbch *dbch, struct fwohcidb_tr *db_tr) 2658 { 2659 struct fwohcidb *db = &db_tr->db[0]; 2660 2661 FWOHCI_DMA_CLEAR(db->db.desc.depend, 0xf); 2662 FWOHCI_DMA_WRITE(db->db.desc.res, dbch->xferq.psize); 2663 FWOHCI_DMA_SET(dbch->bottom->db[0].db.desc.depend, 1); 2664 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_PREWRITE); 2665 dbch->bottom = db_tr; 2666 } 2667 2668 static void 2669 fwohci_arcv(struct fwohci_softc *sc, struct fwohci_dbch *dbch, int count) 2670 { 2671 struct fwohcidb_tr *db_tr; 2672 struct iovec vec[2]; 2673 struct fw_pkt pktbuf; 2674 int nvec; 2675 struct fw_pkt *fp; 2676 u_int8_t *ld; 2677 u_int32_t stat, status; 2678 u_int spd; 2679 int len, plen, hlen, pcnt, offset; 2680 caddr_t buf; 2681 int resCount; 2682 2683 if (&sc->arrq != dbch && &sc->arrs != dbch) 2684 return; 2685 2686 crit_enter(); 2687 db_tr = dbch->top; 2688 pcnt = 0; 2689 /* XXX we cannot handle a packet which lies in more than two buf */ 2690 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTREAD); 2691 fwdma_sync_multiseg_all(dbch->am, BUS_DMASYNC_POSTWRITE); 2692 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) >> OHCI_STATUS_SHIFT; 2693 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) & OHCI_COUNT_MASK; 2694 #if 0 2695 kprintf("status 0x%04x, resCount 0x%04x\n", status, resCount); 2696 #endif 2697 while (status & OHCI_CNTL_DMA_ACTIVE) { 2698 len = dbch->xferq.psize - resCount; 2699 ld = (u_int8_t *)db_tr->buf; 2700 if (dbch->pdb_tr == NULL) { 2701 len -= dbch->buf_offset; 2702 ld += dbch->buf_offset; 2703 } 2704 if (len > 0) 2705 bus_dmamap_sync(dbch->dmat, db_tr->dma_map, 2706 BUS_DMASYNC_POSTREAD); 2707 while (len > 0 ) { 2708 if (count >= 0 && count-- == 0) 2709 goto out; 2710 if(dbch->pdb_tr != NULL){ 2711 /* we have a fragment in previous buffer */ 2712 int rlen; 2713 2714 offset = dbch->buf_offset; 2715 if (offset < 0) 2716 offset = - offset; 2717 buf = dbch->pdb_tr->buf + offset; 2718 rlen = dbch->xferq.psize - offset; 2719 if (firewire_debug) 2720 kprintf("rlen=%d, offset=%d\n", 2721 rlen, dbch->buf_offset); 2722 if (dbch->buf_offset < 0) { 2723 /* split in header, pull up */ 2724 char *p; 2725 2726 p = (char *)&pktbuf; 2727 bcopy(buf, p, rlen); 2728 p += rlen; 2729 /* this must be too long but harmless */ 2730 rlen = sizeof(pktbuf) - rlen; 2731 if (rlen < 0) 2732 kprintf("why rlen < 0\n"); 2733 bcopy(db_tr->buf, p, rlen); 2734 ld += rlen; 2735 len -= rlen; 2736 hlen = fwohci_arcv_swap(&pktbuf, sizeof(pktbuf)); 2737 if (hlen < 0) { 2738 kprintf("hlen < 0 shouldn't happen"); 2739 } 2740 offset = sizeof(pktbuf); 2741 vec[0].iov_base = (char *)&pktbuf; 2742 vec[0].iov_len = offset; 2743 } else { 2744 /* split in payload */ 2745 offset = rlen; 2746 vec[0].iov_base = buf; 2747 vec[0].iov_len = rlen; 2748 } 2749 fp=(struct fw_pkt *)vec[0].iov_base; 2750 nvec = 1; 2751 } else { 2752 /* no fragment in previous buffer */ 2753 fp=(struct fw_pkt *)ld; 2754 hlen = fwohci_arcv_swap(fp, len); 2755 if (hlen == 0) 2756 /* XXX need reset */ 2757 goto out; 2758 if (hlen < 0) { 2759 dbch->pdb_tr = db_tr; 2760 dbch->buf_offset = - dbch->buf_offset; 2761 /* sanity check */ 2762 if (resCount != 0) 2763 kprintf("resCount = %d !?\n", 2764 resCount); 2765 /* XXX clear pdb_tr */ 2766 goto out; 2767 } 2768 offset = 0; 2769 nvec = 0; 2770 } 2771 plen = fwohci_get_plen(sc, dbch, fp) - offset; 2772 if (plen < 0) { 2773 /* minimum header size + trailer 2774 = sizeof(fw_pkt) so this shouldn't happens */ 2775 kprintf("plen(%d) is negative! offset=%d\n", 2776 plen, offset); 2777 /* XXX clear pdb_tr */ 2778 goto out; 2779 } 2780 if (plen > 0) { 2781 len -= plen; 2782 if (len < 0) { 2783 dbch->pdb_tr = db_tr; 2784 if (firewire_debug) 2785 kprintf("split payload\n"); 2786 /* sanity check */ 2787 if (resCount != 0) 2788 kprintf("resCount = %d !?\n", 2789 resCount); 2790 /* XXX clear pdb_tr */ 2791 goto out; 2792 } 2793 vec[nvec].iov_base = ld; 2794 vec[nvec].iov_len = plen; 2795 nvec ++; 2796 ld += plen; 2797 } 2798 dbch->buf_offset = ld - (u_int8_t *)db_tr->buf; 2799 if (nvec == 0) 2800 kprintf("nvec == 0\n"); 2801 2802 /* DMA result-code will be written at the tail of packet */ 2803 #if BYTE_ORDER == BIG_ENDIAN 2804 stat = FWOHCI_DMA_READ(((struct fwohci_trailer *)(ld - sizeof(struct fwohci_trailer)))->stat) >> 16; 2805 #else 2806 stat = ((struct fwohci_trailer *)(ld - sizeof(struct fwohci_trailer)))->stat; 2807 #endif 2808 #if 0 2809 kprintf("plen: %d, stat %x\n", 2810 plen ,stat); 2811 #endif 2812 spd = (stat >> 5) & 0x3; 2813 stat &= 0x1f; 2814 switch(stat){ 2815 case FWOHCIEV_ACKPEND: 2816 #if 0 2817 kprintf("fwohci_arcv: ack pending tcode=0x%x..\n", fp->mode.common.tcode); 2818 #endif 2819 /* fall through */ 2820 case FWOHCIEV_ACKCOMPL: 2821 { 2822 struct fw_rcv_buf rb; 2823 2824 if ((vec[nvec-1].iov_len -= 2825 sizeof(struct fwohci_trailer)) == 0) 2826 nvec--; 2827 rb.fc = &sc->fc; 2828 rb.vec = vec; 2829 rb.nvec = nvec; 2830 rb.spd = spd; 2831 fw_rcv(&rb); 2832 break; 2833 } 2834 case FWOHCIEV_BUSRST: 2835 if (sc->fc.status != FWBUSRESET) 2836 kprintf("got BUSRST packet!?\n"); 2837 break; 2838 default: 2839 device_printf(sc->fc.dev, "Async DMA Receive error err = %02x %s\n", stat, fwohcicode[stat]); 2840 #if 0 /* XXX */ 2841 goto out; 2842 #endif 2843 break; 2844 } 2845 pcnt ++; 2846 if (dbch->pdb_tr != NULL) { 2847 fwohci_arcv_free_buf(dbch, dbch->pdb_tr); 2848 dbch->pdb_tr = NULL; 2849 } 2850 2851 } 2852 out: 2853 if (resCount == 0) { 2854 /* done on this buffer */ 2855 if (dbch->pdb_tr == NULL) { 2856 fwohci_arcv_free_buf(dbch, db_tr); 2857 dbch->buf_offset = 0; 2858 } else 2859 if (dbch->pdb_tr != db_tr) 2860 kprintf("pdb_tr != db_tr\n"); 2861 db_tr = STAILQ_NEXT(db_tr, link); 2862 status = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2863 >> OHCI_STATUS_SHIFT; 2864 resCount = FWOHCI_DMA_READ(db_tr->db[0].db.desc.res) 2865 & OHCI_COUNT_MASK; 2866 /* XXX check buffer overrun */ 2867 dbch->top = db_tr; 2868 } else { 2869 dbch->buf_offset = dbch->xferq.psize - resCount; 2870 break; 2871 } 2872 /* XXX make sure DMA is not dead */ 2873 } 2874 #if 0 2875 if (pcnt < 1) 2876 kprintf("fwohci_arcv: no packets\n"); 2877 #endif 2878 crit_exit(); 2879 } 2880