if_tl.c revision 1.94.4.1
1 /* $NetBSD: if_tl.c,v 1.94.4.1 2010/05/30 05:17:35 rmind Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Manuel Bouyer. 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /* 28 * Texas Instruments ThunderLAN ethernet controller 29 * ThunderLAN Programmer's Guide (TI Literature Number SPWU013A) 30 * available from www.ti.com 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: if_tl.c,v 1.94.4.1 2010/05/30 05:17:35 rmind Exp $"); 35 36 #undef TLDEBUG 37 #define TL_PRIV_STATS 38 #undef TLDEBUG_RX 39 #undef TLDEBUG_TX 40 #undef TLDEBUG_ADDR 41 42 #include "opt_inet.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/mbuf.h> 47 #include <sys/protosw.h> 48 #include <sys/socket.h> 49 #include <sys/ioctl.h> 50 #include <sys/errno.h> 51 #include <sys/malloc.h> 52 #include <sys/kernel.h> 53 #include <sys/proc.h> /* only for declaration of wakeup() used by vm.h */ 54 #include <sys/device.h> 55 56 #include <net/if.h> 57 #if defined(SIOCSIFMEDIA) 58 #include <net/if_media.h> 59 #endif 60 #include <net/if_types.h> 61 #include <net/if_dl.h> 62 #include <net/route.h> 63 #include <net/netisr.h> 64 65 #include <net/bpf.h> 66 #include <net/bpfdesc.h> 67 68 #include "rnd.h" 69 #if NRND > 0 70 #include <sys/rnd.h> 71 #endif 72 73 #ifdef INET 74 #include <netinet/in.h> 75 #include <netinet/in_systm.h> 76 #include <netinet/in_var.h> 77 #include <netinet/ip.h> 78 #endif 79 80 81 #if defined(__NetBSD__) 82 #include <net/if_ether.h> 83 #include <uvm/uvm_extern.h> 84 #if defined(INET) 85 #include <netinet/if_inarp.h> 86 #endif 87 88 #include <sys/bus.h> 89 #include <sys/intr.h> 90 91 #include <dev/pci/pcireg.h> 92 #include <dev/pci/pcivar.h> 93 #include <dev/pci/pcidevs.h> 94 95 #include <dev/i2c/i2cvar.h> 96 #include <dev/i2c/i2c_bitbang.h> 97 #include <dev/i2c/at24cxxvar.h> 98 99 #include <dev/mii/mii.h> 100 #include <dev/mii/miivar.h> 101 102 #include <dev/mii/tlphyvar.h> 103 104 #include <dev/pci/if_tlregs.h> 105 #include <dev/pci/if_tlvar.h> 106 #endif /* __NetBSD__ */ 107 108 /* number of transmit/receive buffers */ 109 #ifndef TL_NBUF 110 #define TL_NBUF 32 111 #endif 112 113 static int tl_pci_match(device_t, cfdata_t, void *); 114 static void tl_pci_attach(device_t, device_t, void *); 115 static int tl_intr(void *); 116 117 static int tl_ifioctl(struct ifnet *, ioctl_cmd_t, void *); 118 static int tl_mediachange(struct ifnet *); 119 static void tl_ifwatchdog(struct ifnet *); 120 static bool tl_shutdown(device_t, int); 121 122 static void tl_ifstart(struct ifnet *); 123 static void tl_reset(tl_softc_t *); 124 static int tl_init(struct ifnet *); 125 static void tl_stop(struct ifnet *, int); 126 static void tl_restart(void *); 127 static int tl_add_RxBuff(tl_softc_t *, struct Rx_list *, struct mbuf *); 128 static void tl_read_stats(tl_softc_t *); 129 static void tl_ticks(void *); 130 static int tl_multicast_hash(uint8_t *); 131 static void tl_addr_filter(tl_softc_t *); 132 133 static uint32_t tl_intreg_read(tl_softc_t *, uint32_t); 134 static void tl_intreg_write(tl_softc_t *, uint32_t, uint32_t); 135 static uint8_t tl_intreg_read_byte(tl_softc_t *, uint32_t); 136 static void tl_intreg_write_byte(tl_softc_t *, uint32_t, uint8_t); 137 138 void tl_mii_sync(struct tl_softc *); 139 void tl_mii_sendbits(struct tl_softc *, uint32_t, int); 140 141 142 #if defined(TLDEBUG_RX) 143 static void ether_printheader(struct ether_header *); 144 #endif 145 146 int tl_mii_read(device_t, int, int); 147 void tl_mii_write(device_t, int, int, int); 148 149 void tl_statchg(device_t); 150 151 /* I2C glue */ 152 static int tl_i2c_acquire_bus(void *, int); 153 static void tl_i2c_release_bus(void *, int); 154 static int tl_i2c_send_start(void *, int); 155 static int tl_i2c_send_stop(void *, int); 156 static int tl_i2c_initiate_xfer(void *, i2c_addr_t, int); 157 static int tl_i2c_read_byte(void *, uint8_t *, int); 158 static int tl_i2c_write_byte(void *, uint8_t, int); 159 160 /* I2C bit-bang glue */ 161 static void tl_i2cbb_set_bits(void *, uint32_t); 162 static void tl_i2cbb_set_dir(void *, uint32_t); 163 static uint32_t tl_i2cbb_read(void *); 164 static const struct i2c_bitbang_ops tl_i2cbb_ops = { 165 tl_i2cbb_set_bits, 166 tl_i2cbb_set_dir, 167 tl_i2cbb_read, 168 { 169 TL_NETSIO_EDATA, /* SDA */ 170 TL_NETSIO_ECLOCK, /* SCL */ 171 TL_NETSIO_ETXEN, /* SDA is output */ 172 0, /* SDA is input */ 173 } 174 }; 175 176 static inline void netsio_clr(tl_softc_t *, uint8_t); 177 static inline void netsio_set(tl_softc_t *, uint8_t); 178 static inline uint8_t netsio_read(tl_softc_t *, uint8_t); 179 180 static inline void 181 netsio_clr(tl_softc_t *sc, uint8_t bits) 182 { 183 184 tl_intreg_write_byte(sc, TL_INT_NET + TL_INT_NetSio, 185 tl_intreg_read_byte(sc, TL_INT_NET + TL_INT_NetSio) & (~bits)); 186 } 187 188 static inline void 189 netsio_set(tl_softc_t *sc, uint8_t bits) 190 { 191 192 tl_intreg_write_byte(sc, TL_INT_NET + TL_INT_NetSio, 193 tl_intreg_read_byte(sc, TL_INT_NET + TL_INT_NetSio) | bits); 194 } 195 196 static inline uint8_t 197 netsio_read(tl_softc_t *sc, uint8_t bits) 198 { 199 200 return tl_intreg_read_byte(sc, TL_INT_NET + TL_INT_NetSio) & bits; 201 } 202 203 CFATTACH_DECL_NEW(tl, sizeof(tl_softc_t), 204 tl_pci_match, tl_pci_attach, NULL, NULL); 205 206 static const struct tl_product_desc tl_compaq_products[] = { 207 { PCI_PRODUCT_COMPAQ_N100TX, TLPHY_MEDIA_NO_10_T, 208 "Compaq Netelligent 10/100 TX" }, 209 { PCI_PRODUCT_COMPAQ_INT100TX, TLPHY_MEDIA_NO_10_T, 210 "Integrated Compaq Netelligent 10/100 TX" }, 211 { PCI_PRODUCT_COMPAQ_N10T, TLPHY_MEDIA_10_5, 212 "Compaq Netelligent 10 T" }, 213 { PCI_PRODUCT_COMPAQ_N10T2, TLPHY_MEDIA_10_2, 214 "Compaq Netelligent 10 T/2 UTP/Coax" }, 215 { PCI_PRODUCT_COMPAQ_IntNF3P, TLPHY_MEDIA_10_2, 216 "Compaq Integrated NetFlex 3/P" }, 217 { PCI_PRODUCT_COMPAQ_IntPL100TX, TLPHY_MEDIA_10_2|TLPHY_MEDIA_NO_10_T, 218 "Compaq ProLiant Integrated Netelligent 10/100 TX" }, 219 { PCI_PRODUCT_COMPAQ_DPNet100TX, TLPHY_MEDIA_10_5|TLPHY_MEDIA_NO_10_T, 220 "Compaq Dual Port Netelligent 10/100 TX" }, 221 { PCI_PRODUCT_COMPAQ_DP4000, TLPHY_MEDIA_10_5|TLPHY_MEDIA_NO_10_T, 222 "Compaq Deskpro 4000 5233MMX" }, 223 { PCI_PRODUCT_COMPAQ_NF3P_BNC, TLPHY_MEDIA_10_2, 224 "Compaq NetFlex 3/P w/ BNC" }, 225 { PCI_PRODUCT_COMPAQ_NF3P, TLPHY_MEDIA_10_5, 226 "Compaq NetFlex 3/P" }, 227 { 0, 0, NULL }, 228 }; 229 230 static const struct tl_product_desc tl_ti_products[] = { 231 /* 232 * Built-in Ethernet on the TI TravelMate 5000 233 * docking station; better product description? 234 */ 235 { PCI_PRODUCT_TI_TLAN, 0, 236 "Texas Instruments ThunderLAN" }, 237 { 0, 0, NULL }, 238 }; 239 240 struct tl_vendor_desc { 241 uint32_t tv_vendor; 242 const struct tl_product_desc *tv_products; 243 }; 244 245 const struct tl_vendor_desc tl_vendors[] = { 246 { PCI_VENDOR_COMPAQ, tl_compaq_products }, 247 { PCI_VENDOR_TI, tl_ti_products }, 248 { 0, NULL }, 249 }; 250 251 static const struct tl_product_desc *tl_lookup_product(uint32_t); 252 253 static const struct tl_product_desc * 254 tl_lookup_product(uint32_t id) 255 { 256 const struct tl_product_desc *tp; 257 const struct tl_vendor_desc *tv; 258 259 for (tv = tl_vendors; tv->tv_products != NULL; tv++) 260 if (PCI_VENDOR(id) == tv->tv_vendor) 261 break; 262 263 if ((tp = tv->tv_products) == NULL) 264 return NULL; 265 266 for (; tp->tp_desc != NULL; tp++) 267 if (PCI_PRODUCT(id) == tp->tp_product) 268 break; 269 270 if (tp->tp_desc == NULL) 271 return NULL; 272 273 return tp; 274 } 275 276 static int 277 tl_pci_match(device_t parent, cfdata_t cf, void *aux) 278 { 279 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 280 281 if (tl_lookup_product(pa->pa_id) != NULL) 282 return 1; 283 284 return 0; 285 } 286 287 static void 288 tl_pci_attach(device_t parent, device_t self, void *aux) 289 { 290 tl_softc_t *sc = device_private(self); 291 struct pci_attach_args * const pa = (struct pci_attach_args *)aux; 292 const struct tl_product_desc *tp; 293 struct ifnet * const ifp = &sc->tl_if; 294 bus_space_tag_t iot, memt; 295 bus_space_handle_t ioh, memh; 296 pci_intr_handle_t intrhandle; 297 const char *intrstr; 298 int ioh_valid, memh_valid; 299 int reg_io, reg_mem; 300 pcireg_t reg10, reg14; 301 pcireg_t csr; 302 303 sc->sc_dev = self; 304 aprint_normal("\n"); 305 306 callout_init(&sc->tl_tick_ch, 0); 307 callout_init(&sc->tl_restart_ch, 0); 308 309 tp = tl_lookup_product(pa->pa_id); 310 if (tp == NULL) 311 panic("%s: impossible", __func__); 312 sc->tl_product = tp; 313 314 /* 315 * Map the card space. First we have to find the I/O and MEM 316 * registers. I/O is supposed to be at 0x10, MEM at 0x14, 317 * but some boards (Compaq Netflex 3/P PCI) seem to have it reversed. 318 * The ThunderLAN manual is not consistent about this either (there 319 * are both cases in code examples). 320 */ 321 reg10 = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x10); 322 reg14 = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x14); 323 if (PCI_MAPREG_TYPE(reg10) == PCI_MAPREG_TYPE_IO) 324 reg_io = 0x10; 325 else if (PCI_MAPREG_TYPE(reg14) == PCI_MAPREG_TYPE_IO) 326 reg_io = 0x14; 327 else 328 reg_io = 0; 329 if (PCI_MAPREG_TYPE(reg10) == PCI_MAPREG_TYPE_MEM) 330 reg_mem = 0x10; 331 else if (PCI_MAPREG_TYPE(reg14) == PCI_MAPREG_TYPE_MEM) 332 reg_mem = 0x14; 333 else 334 reg_mem = 0; 335 336 if (reg_io != 0) 337 ioh_valid = (pci_mapreg_map(pa, reg_io, PCI_MAPREG_TYPE_IO, 338 0, &iot, &ioh, NULL, NULL) == 0); 339 else 340 ioh_valid = 0; 341 if (reg_mem != 0) 342 memh_valid = (pci_mapreg_map(pa, PCI_CBMA, 343 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 344 0, &memt, &memh, NULL, NULL) == 0); 345 else 346 memh_valid = 0; 347 348 if (ioh_valid) { 349 sc->tl_bustag = iot; 350 sc->tl_bushandle = ioh; 351 } else if (memh_valid) { 352 sc->tl_bustag = memt; 353 sc->tl_bushandle = memh; 354 } else { 355 aprint_error_dev(self, "unable to map device registers\n"); 356 return; 357 } 358 sc->tl_dmatag = pa->pa_dmat; 359 360 /* Enable the device. */ 361 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 362 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 363 csr | PCI_COMMAND_MASTER_ENABLE); 364 365 aprint_normal_dev(self, "%s\n", tp->tp_desc); 366 367 tl_reset(sc); 368 369 /* fill in the i2c tag */ 370 sc->sc_i2c.ic_cookie = sc; 371 sc->sc_i2c.ic_acquire_bus = tl_i2c_acquire_bus; 372 sc->sc_i2c.ic_release_bus = tl_i2c_release_bus; 373 sc->sc_i2c.ic_send_start = tl_i2c_send_start; 374 sc->sc_i2c.ic_send_stop = tl_i2c_send_stop; 375 sc->sc_i2c.ic_initiate_xfer = tl_i2c_initiate_xfer; 376 sc->sc_i2c.ic_read_byte = tl_i2c_read_byte; 377 sc->sc_i2c.ic_write_byte = tl_i2c_write_byte; 378 379 #ifdef TLDEBUG 380 aprint_debug_dev(self, "default values of INTreg: 0x%x\n", 381 tl_intreg_read(sc, TL_INT_Defaults)); 382 #endif 383 384 /* read mac addr */ 385 if (seeprom_bootstrap_read(&sc->sc_i2c, 0x50, 0x83, 256 /* 2kbit */, 386 sc->tl_enaddr, ETHER_ADDR_LEN)) { 387 aprint_error_dev(self, "error reading Ethernet address\n"); 388 return; 389 } 390 aprint_normal_dev(self, "Ethernet address %s\n", 391 ether_sprintf(sc->tl_enaddr)); 392 393 /* Map and establish interrupts */ 394 if (pci_intr_map(pa, &intrhandle)) { 395 aprint_error_dev(self, "couldn't map interrupt\n"); 396 return; 397 } 398 intrstr = pci_intr_string(pa->pa_pc, intrhandle); 399 sc->tl_if.if_softc = sc; 400 sc->tl_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET, 401 tl_intr, sc); 402 if (sc->tl_ih == NULL) { 403 aprint_error_dev(self, "couldn't establish interrupt"); 404 if (intrstr != NULL) 405 aprint_error(" at %s", intrstr); 406 aprint_error("\n"); 407 return; 408 } 409 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 410 411 /* init these pointers, so that tl_shutdown won't try to read them */ 412 sc->Rx_list = NULL; 413 sc->Tx_list = NULL; 414 415 /* allocate DMA-safe memory for control structs */ 416 if (bus_dmamem_alloc(sc->tl_dmatag, PAGE_SIZE, 0, PAGE_SIZE, 417 &sc->ctrl_segs, 1, &sc->ctrl_nsegs, BUS_DMA_NOWAIT) != 0 || 418 bus_dmamem_map(sc->tl_dmatag, &sc->ctrl_segs, 419 sc->ctrl_nsegs, PAGE_SIZE, (void **)&sc->ctrl, 420 BUS_DMA_NOWAIT | BUS_DMA_COHERENT) != 0) { 421 aprint_error_dev(self, "can't allocate DMA memory for lists\n"); 422 return; 423 } 424 425 /* 426 * Initialize our media structures and probe the MII. 427 * 428 * Note that we don't care about the media instance. We 429 * are expecting to have multiple PHYs on the 10/100 cards, 430 * and on those cards we exclude the internal PHY from providing 431 * 10baseT. By ignoring the instance, it allows us to not have 432 * to specify it on the command line when switching media. 433 */ 434 sc->tl_mii.mii_ifp = ifp; 435 sc->tl_mii.mii_readreg = tl_mii_read; 436 sc->tl_mii.mii_writereg = tl_mii_write; 437 sc->tl_mii.mii_statchg = tl_statchg; 438 sc->tl_ec.ec_mii = &sc->tl_mii; 439 ifmedia_init(&sc->tl_mii.mii_media, IFM_IMASK, tl_mediachange, 440 ether_mediastatus); 441 mii_attach(self, &sc->tl_mii, 0xffffffff, MII_PHY_ANY, 442 MII_OFFSET_ANY, 0); 443 if (LIST_FIRST(&sc->tl_mii.mii_phys) == NULL) { 444 ifmedia_add(&sc->tl_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL); 445 ifmedia_set(&sc->tl_mii.mii_media, IFM_ETHER|IFM_NONE); 446 } else 447 ifmedia_set(&sc->tl_mii.mii_media, IFM_ETHER|IFM_AUTO); 448 449 /* 450 * We can support 802.1Q VLAN-sized frames. 451 */ 452 sc->tl_ec.ec_capabilities |= ETHERCAP_VLAN_MTU; 453 454 strlcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 455 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST; 456 ifp->if_ioctl = tl_ifioctl; 457 ifp->if_start = tl_ifstart; 458 ifp->if_watchdog = tl_ifwatchdog; 459 ifp->if_init = tl_init; 460 ifp->if_stop = tl_stop; 461 ifp->if_timer = 0; 462 IFQ_SET_READY(&ifp->if_snd); 463 if_attach(ifp); 464 ether_ifattach(&(sc)->tl_if, (sc)->tl_enaddr); 465 466 /* 467 * Add shutdown hook so that DMA is disabled prior to reboot. 468 * Not doing reboot before the driver initializes. 469 */ 470 if (pmf_device_register1(self, NULL, NULL, tl_shutdown)) 471 pmf_class_network_register(self, ifp); 472 else 473 aprint_error_dev(self, "couldn't establish power handler\n"); 474 475 #if NRND > 0 476 rnd_attach_source(&sc->rnd_source, device_xname(self), 477 RND_TYPE_NET, 0); 478 #endif 479 } 480 481 static void 482 tl_reset(tl_softc_t *sc) 483 { 484 int i; 485 486 /* read stats */ 487 if (sc->tl_if.if_flags & IFF_RUNNING) { 488 callout_stop(&sc->tl_tick_ch); 489 tl_read_stats(sc); 490 } 491 /* Reset adapter */ 492 TL_HR_WRITE(sc, TL_HOST_CMD, 493 TL_HR_READ(sc, TL_HOST_CMD) | HOST_CMD_Ad_Rst); 494 DELAY(100000); 495 /* Disable interrupts */ 496 TL_HR_WRITE(sc, TL_HOST_CMD, HOST_CMD_IntOff); 497 /* setup aregs & hash */ 498 for (i = TL_INT_Areg0; i <= TL_INT_HASH2; i = i + 4) 499 tl_intreg_write(sc, i, 0); 500 #ifdef TLDEBUG_ADDR 501 printf("Areg & hash registers: \n"); 502 for (i = TL_INT_Areg0; i <= TL_INT_HASH2; i = i + 4) 503 printf(" reg %x: %x\n", i, tl_intreg_read(sc, i)); 504 #endif 505 /* Setup NetConfig */ 506 tl_intreg_write(sc, TL_INT_NetConfig, 507 TL_NETCONFIG_1F | TL_NETCONFIG_1chn | TL_NETCONFIG_PHY_EN); 508 /* Bsize: accept default */ 509 /* TX commit in Acommit: accept default */ 510 /* Load Ld_tmr and Ld_thr */ 511 /* Ld_tmr = 3 */ 512 TL_HR_WRITE(sc, TL_HOST_CMD, 0x3 | HOST_CMD_LdTmr); 513 /* Ld_thr = 0 */ 514 TL_HR_WRITE(sc, TL_HOST_CMD, 0x0 | HOST_CMD_LdThr); 515 /* Unreset MII */ 516 netsio_set(sc, TL_NETSIO_NMRST); 517 DELAY(100000); 518 sc->tl_mii.mii_media_status &= ~IFM_ACTIVE; 519 } 520 521 static bool 522 tl_shutdown(device_t self, int howto) 523 { 524 tl_softc_t *sc = device_private(self); 525 struct ifnet *ifp = &sc->tl_if; 526 527 tl_stop(ifp, 1); 528 529 return true; 530 } 531 532 static void 533 tl_stop(struct ifnet *ifp, int disable) 534 { 535 tl_softc_t *sc = ifp->if_softc; 536 struct Tx_list *Tx; 537 int i; 538 539 if ((ifp->if_flags & IFF_RUNNING) == 0) 540 return; 541 /* disable interrupts */ 542 TL_HR_WRITE(sc, TL_HOST_CMD, HOST_CMD_IntOff); 543 /* stop TX and RX channels */ 544 TL_HR_WRITE(sc, TL_HOST_CMD, 545 HOST_CMD_STOP | HOST_CMD_RT | HOST_CMD_Nes); 546 TL_HR_WRITE(sc, TL_HOST_CMD, HOST_CMD_STOP); 547 DELAY(100000); 548 549 /* stop statistics reading loop, read stats */ 550 callout_stop(&sc->tl_tick_ch); 551 tl_read_stats(sc); 552 553 /* Down the MII. */ 554 mii_down(&sc->tl_mii); 555 556 /* deallocate memory allocations */ 557 if (sc->Rx_list) { 558 for (i = 0; i< TL_NBUF; i++) { 559 if (sc->Rx_list[i].m) { 560 bus_dmamap_unload(sc->tl_dmatag, 561 sc->Rx_list[i].m_dmamap); 562 m_freem(sc->Rx_list[i].m); 563 } 564 bus_dmamap_destroy(sc->tl_dmatag, 565 sc->Rx_list[i].m_dmamap); 566 sc->Rx_list[i].m = NULL; 567 } 568 free(sc->Rx_list, M_DEVBUF); 569 sc->Rx_list = NULL; 570 bus_dmamap_unload(sc->tl_dmatag, sc->Rx_dmamap); 571 bus_dmamap_destroy(sc->tl_dmatag, sc->Rx_dmamap); 572 sc->hw_Rx_list = NULL; 573 while ((Tx = sc->active_Tx) != NULL) { 574 Tx->hw_list->stat = 0; 575 bus_dmamap_unload(sc->tl_dmatag, Tx->m_dmamap); 576 bus_dmamap_destroy(sc->tl_dmatag, Tx->m_dmamap); 577 m_freem(Tx->m); 578 sc->active_Tx = Tx->next; 579 Tx->next = sc->Free_Tx; 580 sc->Free_Tx = Tx; 581 } 582 sc->last_Tx = NULL; 583 free(sc->Tx_list, M_DEVBUF); 584 sc->Tx_list = NULL; 585 bus_dmamap_unload(sc->tl_dmatag, sc->Tx_dmamap); 586 bus_dmamap_destroy(sc->tl_dmatag, sc->Tx_dmamap); 587 sc->hw_Tx_list = NULL; 588 } 589 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 590 ifp->if_timer = 0; 591 sc->tl_mii.mii_media_status &= ~IFM_ACTIVE; 592 } 593 594 static void 595 tl_restart(void *v) 596 { 597 598 tl_init(v); 599 } 600 601 static int 602 tl_init(struct ifnet *ifp) 603 { 604 tl_softc_t *sc = ifp->if_softc; 605 int i, s, error; 606 bus_size_t boundary; 607 prop_number_t prop_boundary; 608 const char *errstring; 609 char *nullbuf; 610 611 s = splnet(); 612 /* cancel any pending IO */ 613 tl_stop(ifp, 1); 614 tl_reset(sc); 615 if ((sc->tl_if.if_flags & IFF_UP) == 0) { 616 splx(s); 617 return 0; 618 } 619 /* Set various register to reasonable value */ 620 /* setup NetCmd in promisc mode if needed */ 621 i = (ifp->if_flags & IFF_PROMISC) ? TL_NETCOMMAND_CAF : 0; 622 tl_intreg_write_byte(sc, TL_INT_NET + TL_INT_NetCmd, 623 TL_NETCOMMAND_NRESET | TL_NETCOMMAND_NWRAP | i); 624 /* Max receive size : MCLBYTES */ 625 tl_intreg_write_byte(sc, TL_INT_MISC + TL_MISC_MaxRxL, MCLBYTES & 0xff); 626 tl_intreg_write_byte(sc, TL_INT_MISC + TL_MISC_MaxRxH, 627 (MCLBYTES >> 8) & 0xff); 628 629 /* init MAC addr */ 630 for (i = 0; i < ETHER_ADDR_LEN; i++) 631 tl_intreg_write_byte(sc, TL_INT_Areg0 + i , sc->tl_enaddr[i]); 632 /* add multicast filters */ 633 tl_addr_filter(sc); 634 #ifdef TLDEBUG_ADDR 635 printf("Wrote Mac addr, Areg & hash registers are now: \n"); 636 for (i = TL_INT_Areg0; i <= TL_INT_HASH2; i = i + 4) 637 printf(" reg %x: %x\n", i, tl_intreg_read(sc, i)); 638 #endif 639 640 /* Pre-allocate receivers mbuf, make the lists */ 641 sc->Rx_list = malloc(sizeof(struct Rx_list) * TL_NBUF, M_DEVBUF, 642 M_NOWAIT|M_ZERO); 643 sc->Tx_list = malloc(sizeof(struct Tx_list) * TL_NBUF, M_DEVBUF, 644 M_NOWAIT|M_ZERO); 645 if (sc->Rx_list == NULL || sc->Tx_list == NULL) { 646 errstring = "out of memory for lists"; 647 error = ENOMEM; 648 goto bad; 649 } 650 651 /* 652 * Some boards (Set Engineering GFE) do not permit DMA transfers 653 * across page boundaries. 654 */ 655 prop_boundary = prop_dictionary_get(device_properties(sc->sc_dev), 656 "tl-dma-page-boundary"); 657 if (prop_boundary != NULL) { 658 KASSERT(prop_object_type(prop_boundary) == PROP_TYPE_NUMBER); 659 boundary = (bus_size_t)prop_number_integer_value(prop_boundary); 660 } else { 661 boundary = 0; 662 } 663 664 error = bus_dmamap_create(sc->tl_dmatag, 665 sizeof(struct tl_Rx_list) * TL_NBUF, 1, 666 sizeof(struct tl_Rx_list) * TL_NBUF, 0, BUS_DMA_WAITOK, 667 &sc->Rx_dmamap); 668 if (error == 0) 669 error = bus_dmamap_create(sc->tl_dmatag, 670 sizeof(struct tl_Tx_list) * TL_NBUF, 1, 671 sizeof(struct tl_Tx_list) * TL_NBUF, boundary, 672 BUS_DMA_WAITOK, &sc->Tx_dmamap); 673 if (error == 0) 674 error = bus_dmamap_create(sc->tl_dmatag, ETHER_MIN_TX, 1, 675 ETHER_MIN_TX, boundary, BUS_DMA_WAITOK, 676 &sc->null_dmamap); 677 if (error) { 678 errstring = "can't allocate DMA maps for lists"; 679 goto bad; 680 } 681 memset(sc->ctrl, 0, PAGE_SIZE); 682 sc->hw_Rx_list = (void *)sc->ctrl; 683 sc->hw_Tx_list = 684 (void *)(sc->ctrl + sizeof(struct tl_Rx_list) * TL_NBUF); 685 nullbuf = sc->ctrl + sizeof(struct tl_Rx_list) * TL_NBUF + 686 sizeof(struct tl_Tx_list) * TL_NBUF; 687 error = bus_dmamap_load(sc->tl_dmatag, sc->Rx_dmamap, 688 sc->hw_Rx_list, sizeof(struct tl_Rx_list) * TL_NBUF, NULL, 689 BUS_DMA_WAITOK); 690 if (error == 0) 691 error = bus_dmamap_load(sc->tl_dmatag, sc->Tx_dmamap, 692 sc->hw_Tx_list, sizeof(struct tl_Tx_list) * TL_NBUF, NULL, 693 BUS_DMA_WAITOK); 694 if (error == 0) 695 error = bus_dmamap_load(sc->tl_dmatag, sc->null_dmamap, 696 nullbuf, ETHER_MIN_TX, NULL, BUS_DMA_WAITOK); 697 if (error) { 698 errstring = "can't DMA map DMA memory for lists"; 699 goto bad; 700 } 701 for (i = 0; i < TL_NBUF; i++) { 702 error = bus_dmamap_create(sc->tl_dmatag, MCLBYTES, 703 1, MCLBYTES, boundary, BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, 704 &sc->Rx_list[i].m_dmamap); 705 if (error == 0) { 706 error = bus_dmamap_create(sc->tl_dmatag, MCLBYTES, 707 TL_NSEG, MCLBYTES, boundary, 708 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, 709 &sc->Tx_list[i].m_dmamap); 710 } 711 if (error) { 712 errstring = "can't allocate DMA maps for mbufs"; 713 goto bad; 714 } 715 sc->Rx_list[i].hw_list = &sc->hw_Rx_list[i]; 716 sc->Rx_list[i].hw_listaddr = sc->Rx_dmamap->dm_segs[0].ds_addr 717 + sizeof(struct tl_Rx_list) * i; 718 sc->Tx_list[i].hw_list = &sc->hw_Tx_list[i]; 719 sc->Tx_list[i].hw_listaddr = sc->Tx_dmamap->dm_segs[0].ds_addr 720 + sizeof(struct tl_Tx_list) * i; 721 if (tl_add_RxBuff(sc, &sc->Rx_list[i], NULL) == 0) { 722 errstring = "out of mbuf for receive list"; 723 error = ENOMEM; 724 goto bad; 725 } 726 if (i > 0) { /* chain the list */ 727 sc->Rx_list[i - 1].next = &sc->Rx_list[i]; 728 sc->hw_Rx_list[i - 1].fwd = 729 htole32(sc->Rx_list[i].hw_listaddr); 730 sc->Tx_list[i - 1].next = &sc->Tx_list[i]; 731 } 732 } 733 sc->hw_Rx_list[TL_NBUF - 1].fwd = 0; 734 sc->Rx_list[TL_NBUF - 1].next = NULL; 735 sc->hw_Tx_list[TL_NBUF - 1].fwd = 0; 736 sc->Tx_list[TL_NBUF - 1].next = NULL; 737 738 sc->active_Rx = &sc->Rx_list[0]; 739 sc->last_Rx = &sc->Rx_list[TL_NBUF - 1]; 740 sc->active_Tx = sc->last_Tx = NULL; 741 sc->Free_Tx = &sc->Tx_list[0]; 742 bus_dmamap_sync(sc->tl_dmatag, sc->Rx_dmamap, 0, 743 sizeof(struct tl_Rx_list) * TL_NBUF, 744 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 745 bus_dmamap_sync(sc->tl_dmatag, sc->Tx_dmamap, 0, 746 sizeof(struct tl_Tx_list) * TL_NBUF, 747 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 748 bus_dmamap_sync(sc->tl_dmatag, sc->null_dmamap, 0, ETHER_MIN_TX, 749 BUS_DMASYNC_PREWRITE); 750 751 /* set media */ 752 if ((error = mii_mediachg(&sc->tl_mii)) == ENXIO) 753 error = 0; 754 else if (error != 0) { 755 errstring = "could not set media"; 756 goto bad; 757 } 758 759 /* start ticks calls */ 760 callout_reset(&sc->tl_tick_ch, hz, tl_ticks, sc); 761 /* write address of Rx list and enable interrupts */ 762 TL_HR_WRITE(sc, TL_HOST_CH_PARM, sc->Rx_list[0].hw_listaddr); 763 TL_HR_WRITE(sc, TL_HOST_CMD, 764 HOST_CMD_GO | HOST_CMD_RT | HOST_CMD_Nes | HOST_CMD_IntOn); 765 sc->tl_if.if_flags |= IFF_RUNNING; 766 sc->tl_if.if_flags &= ~IFF_OACTIVE; 767 splx(s); 768 return 0; 769 bad: 770 printf("%s: %s\n", device_xname(sc->sc_dev), errstring); 771 splx(s); 772 return error; 773 } 774 775 776 static uint32_t 777 tl_intreg_read(tl_softc_t *sc, uint32_t reg) 778 { 779 780 TL_HR_WRITE(sc, TL_HOST_INTR_DIOADR, reg & TL_HOST_DIOADR_MASK); 781 return TL_HR_READ(sc, TL_HOST_DIO_DATA); 782 } 783 784 static uint8_t 785 tl_intreg_read_byte(tl_softc_t *sc, uint32_t reg) 786 { 787 788 TL_HR_WRITE(sc, TL_HOST_INTR_DIOADR, 789 (reg & (~0x07)) & TL_HOST_DIOADR_MASK); 790 return TL_HR_READ_BYTE(sc, TL_HOST_DIO_DATA + (reg & 0x07)); 791 } 792 793 static void 794 tl_intreg_write(tl_softc_t *sc, uint32_t reg, uint32_t val) 795 { 796 797 TL_HR_WRITE(sc, TL_HOST_INTR_DIOADR, reg & TL_HOST_DIOADR_MASK); 798 TL_HR_WRITE(sc, TL_HOST_DIO_DATA, val); 799 } 800 801 static void 802 tl_intreg_write_byte(tl_softc_t *sc, uint32_t reg, uint8_t val) 803 { 804 805 TL_HR_WRITE(sc, TL_HOST_INTR_DIOADR, 806 (reg & (~0x03)) & TL_HOST_DIOADR_MASK); 807 TL_HR_WRITE_BYTE(sc, TL_HOST_DIO_DATA + (reg & 0x03), val); 808 } 809 810 void 811 tl_mii_sync(struct tl_softc *sc) 812 { 813 int i; 814 815 netsio_clr(sc, TL_NETSIO_MTXEN); 816 for (i = 0; i < 32; i++) { 817 netsio_clr(sc, TL_NETSIO_MCLK); 818 netsio_set(sc, TL_NETSIO_MCLK); 819 } 820 } 821 822 void 823 tl_mii_sendbits(struct tl_softc *sc, uint32_t data, int nbits) 824 { 825 int i; 826 827 netsio_set(sc, TL_NETSIO_MTXEN); 828 for (i = 1 << (nbits - 1); i; i = i >> 1) { 829 netsio_clr(sc, TL_NETSIO_MCLK); 830 netsio_read(sc, TL_NETSIO_MCLK); 831 if (data & i) 832 netsio_set(sc, TL_NETSIO_MDATA); 833 else 834 netsio_clr(sc, TL_NETSIO_MDATA); 835 netsio_set(sc, TL_NETSIO_MCLK); 836 netsio_read(sc, TL_NETSIO_MCLK); 837 } 838 } 839 840 int 841 tl_mii_read(device_t self, int phy, int reg) 842 { 843 struct tl_softc *sc = device_private(self); 844 int val = 0, i, err; 845 846 /* 847 * Read the PHY register by manually driving the MII control lines. 848 */ 849 850 tl_mii_sync(sc); 851 tl_mii_sendbits(sc, MII_COMMAND_START, 2); 852 tl_mii_sendbits(sc, MII_COMMAND_READ, 2); 853 tl_mii_sendbits(sc, phy, 5); 854 tl_mii_sendbits(sc, reg, 5); 855 856 netsio_clr(sc, TL_NETSIO_MTXEN); 857 netsio_clr(sc, TL_NETSIO_MCLK); 858 netsio_set(sc, TL_NETSIO_MCLK); 859 netsio_clr(sc, TL_NETSIO_MCLK); 860 861 err = netsio_read(sc, TL_NETSIO_MDATA); 862 netsio_set(sc, TL_NETSIO_MCLK); 863 864 /* Even if an error occurs, must still clock out the cycle. */ 865 for (i = 0; i < 16; i++) { 866 val <<= 1; 867 netsio_clr(sc, TL_NETSIO_MCLK); 868 if (err == 0 && netsio_read(sc, TL_NETSIO_MDATA)) 869 val |= 1; 870 netsio_set(sc, TL_NETSIO_MCLK); 871 } 872 netsio_clr(sc, TL_NETSIO_MCLK); 873 netsio_set(sc, TL_NETSIO_MCLK); 874 875 return err ? 0 : val; 876 } 877 878 void 879 tl_mii_write(device_t self, int phy, int reg, int val) 880 { 881 struct tl_softc *sc = device_private(self); 882 883 /* 884 * Write the PHY register by manually driving the MII control lines. 885 */ 886 887 tl_mii_sync(sc); 888 tl_mii_sendbits(sc, MII_COMMAND_START, 2); 889 tl_mii_sendbits(sc, MII_COMMAND_WRITE, 2); 890 tl_mii_sendbits(sc, phy, 5); 891 tl_mii_sendbits(sc, reg, 5); 892 tl_mii_sendbits(sc, MII_COMMAND_ACK, 2); 893 tl_mii_sendbits(sc, val, 16); 894 895 netsio_clr(sc, TL_NETSIO_MCLK); 896 netsio_set(sc, TL_NETSIO_MCLK); 897 } 898 899 void 900 tl_statchg(device_t self) 901 { 902 tl_softc_t *sc = device_private(self); 903 uint32_t reg; 904 905 #ifdef TLDEBUG 906 printf("%s: media %x\n", __func__, sc->tl_mii.mii_media.ifm_media); 907 #endif 908 909 /* 910 * We must keep the ThunderLAN and the PHY in sync as 911 * to the status of full-duplex! 912 */ 913 reg = tl_intreg_read_byte(sc, TL_INT_NET + TL_INT_NetCmd); 914 if (sc->tl_mii.mii_media_active & IFM_FDX) 915 reg |= TL_NETCOMMAND_DUPLEX; 916 else 917 reg &= ~TL_NETCOMMAND_DUPLEX; 918 tl_intreg_write_byte(sc, TL_INT_NET + TL_INT_NetCmd, reg); 919 } 920 921 /********** I2C glue **********/ 922 923 static int 924 tl_i2c_acquire_bus(void *cookie, int flags) 925 { 926 927 /* private bus */ 928 return 0; 929 } 930 931 static void 932 tl_i2c_release_bus(void *cookie, int flags) 933 { 934 935 /* private bus */ 936 } 937 938 static int 939 tl_i2c_send_start(void *cookie, int flags) 940 { 941 942 return i2c_bitbang_send_start(cookie, flags, &tl_i2cbb_ops); 943 } 944 945 static int 946 tl_i2c_send_stop(void *cookie, int flags) 947 { 948 949 return i2c_bitbang_send_stop(cookie, flags, &tl_i2cbb_ops); 950 } 951 952 static int 953 tl_i2c_initiate_xfer(void *cookie, i2c_addr_t addr, int flags) 954 { 955 956 return i2c_bitbang_initiate_xfer(cookie, addr, flags, &tl_i2cbb_ops); 957 } 958 959 static int 960 tl_i2c_read_byte(void *cookie, uint8_t *valp, int flags) 961 { 962 963 return i2c_bitbang_read_byte(cookie, valp, flags, &tl_i2cbb_ops); 964 } 965 966 static int 967 tl_i2c_write_byte(void *cookie, uint8_t val, int flags) 968 { 969 970 return i2c_bitbang_write_byte(cookie, val, flags, &tl_i2cbb_ops); 971 } 972 973 /********** I2C bit-bang glue **********/ 974 975 static void 976 tl_i2cbb_set_bits(void *cookie, uint32_t bits) 977 { 978 struct tl_softc *sc = cookie; 979 uint8_t reg; 980 981 reg = tl_intreg_read_byte(sc, TL_INT_NET + TL_INT_NetSio); 982 reg = (reg & ~(TL_NETSIO_EDATA|TL_NETSIO_ECLOCK)) | bits; 983 tl_intreg_write_byte(sc, TL_INT_NET + TL_INT_NetSio, reg); 984 } 985 986 static void 987 tl_i2cbb_set_dir(void *cookie, uint32_t bits) 988 { 989 struct tl_softc *sc = cookie; 990 uint8_t reg; 991 992 reg = tl_intreg_read_byte(sc, TL_INT_NET + TL_INT_NetSio); 993 reg = (reg & ~TL_NETSIO_ETXEN) | bits; 994 tl_intreg_write_byte(sc, TL_INT_NET + TL_INT_NetSio, reg); 995 } 996 997 static uint32_t 998 tl_i2cbb_read(void *cookie) 999 { 1000 1001 return tl_intreg_read_byte(cookie, TL_INT_NET + TL_INT_NetSio); 1002 } 1003 1004 /********** End of I2C stuff **********/ 1005 1006 static int 1007 tl_intr(void *v) 1008 { 1009 tl_softc_t *sc = v; 1010 struct ifnet *ifp = &sc->tl_if; 1011 struct Rx_list *Rx; 1012 struct Tx_list *Tx; 1013 struct mbuf *m; 1014 uint32_t int_type, int_reg; 1015 int ack = 0; 1016 int size; 1017 1018 int_reg = TL_HR_READ(sc, TL_HOST_INTR_DIOADR); 1019 int_type = int_reg & TL_INTR_MASK; 1020 if (int_type == 0) 1021 return 0; 1022 #if defined(TLDEBUG_RX) || defined(TLDEBUG_TX) 1023 printf("%s: interrupt type %x, intr_reg %x\n", device_xname(sc->sc_dev), 1024 int_type, int_reg); 1025 #endif 1026 /* disable interrupts */ 1027 TL_HR_WRITE(sc, TL_HOST_CMD, HOST_CMD_IntOff); 1028 switch(int_type & TL_INTR_MASK) { 1029 case TL_INTR_RxEOF: 1030 bus_dmamap_sync(sc->tl_dmatag, sc->Rx_dmamap, 0, 1031 sizeof(struct tl_Rx_list) * TL_NBUF, 1032 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1033 while(le32toh(sc->active_Rx->hw_list->stat) & 1034 TL_RX_CSTAT_CPLT) { 1035 /* dequeue and requeue at end of list */ 1036 ack++; 1037 Rx = sc->active_Rx; 1038 sc->active_Rx = Rx->next; 1039 bus_dmamap_sync(sc->tl_dmatag, Rx->m_dmamap, 0, 1040 Rx->m_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1041 bus_dmamap_unload(sc->tl_dmatag, Rx->m_dmamap); 1042 m = Rx->m; 1043 size = le32toh(Rx->hw_list->stat) >> 16; 1044 #ifdef TLDEBUG_RX 1045 printf("%s: RX list complete, Rx %p, size=%d\n", 1046 __func__, Rx, size); 1047 #endif 1048 if (tl_add_RxBuff(sc, Rx, m) == 0) { 1049 /* 1050 * No new mbuf, reuse the same. This means 1051 * that this packet 1052 * is lost 1053 */ 1054 m = NULL; 1055 #ifdef TL_PRIV_STATS 1056 sc->ierr_nomem++; 1057 #endif 1058 #ifdef TLDEBUG 1059 printf("%s: out of mbuf, lost input packet\n", 1060 device_xname(sc->sc_dev)); 1061 #endif 1062 } 1063 Rx->next = NULL; 1064 Rx->hw_list->fwd = 0; 1065 sc->last_Rx->hw_list->fwd = htole32(Rx->hw_listaddr); 1066 sc->last_Rx->next = Rx; 1067 sc->last_Rx = Rx; 1068 1069 /* deliver packet */ 1070 if (m) { 1071 if (size < sizeof(struct ether_header)) { 1072 m_freem(m); 1073 continue; 1074 } 1075 m->m_pkthdr.rcvif = ifp; 1076 m->m_pkthdr.len = m->m_len = size; 1077 #ifdef TLDEBUG_RX 1078 { 1079 struct ether_header *eh = 1080 mtod(m, struct ether_header *); 1081 printf("%s: Rx packet:\n", __func__); 1082 ether_printheader(eh); 1083 } 1084 #endif 1085 bpf_mtap(ifp, m); 1086 (*ifp->if_input)(ifp, m); 1087 } 1088 } 1089 bus_dmamap_sync(sc->tl_dmatag, sc->Rx_dmamap, 0, 1090 sizeof(struct tl_Rx_list) * TL_NBUF, 1091 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1092 #ifdef TLDEBUG_RX 1093 printf("TL_INTR_RxEOF: ack %d\n", ack); 1094 #else 1095 if (ack == 0) { 1096 printf("%s: EOF intr without anything to read !\n", 1097 device_xname(sc->sc_dev)); 1098 tl_reset(sc); 1099 /* schedule reinit of the board */ 1100 callout_reset(&sc->tl_restart_ch, 1, tl_restart, ifp); 1101 return 1; 1102 } 1103 #endif 1104 break; 1105 case TL_INTR_RxEOC: 1106 ack++; 1107 bus_dmamap_sync(sc->tl_dmatag, sc->Rx_dmamap, 0, 1108 sizeof(struct tl_Rx_list) * TL_NBUF, 1109 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1110 #ifdef TLDEBUG_RX 1111 printf("TL_INTR_RxEOC: ack %d\n", ack); 1112 #endif 1113 #ifdef DIAGNOSTIC 1114 if (le32toh(sc->active_Rx->hw_list->stat) & TL_RX_CSTAT_CPLT) { 1115 printf("%s: Rx EOC interrupt and active Tx list not " 1116 "cleared\n", device_xname(sc->sc_dev)); 1117 return 0; 1118 } else 1119 #endif 1120 { 1121 /* 1122 * write address of Rx list and send Rx GO command, ack 1123 * interrupt and enable interrupts in one command 1124 */ 1125 TL_HR_WRITE(sc, TL_HOST_CH_PARM, sc->active_Rx->hw_listaddr); 1126 TL_HR_WRITE(sc, TL_HOST_CMD, 1127 HOST_CMD_GO | HOST_CMD_RT | HOST_CMD_Nes | ack | int_type | 1128 HOST_CMD_ACK | HOST_CMD_IntOn); 1129 return 1; 1130 } 1131 case TL_INTR_TxEOF: 1132 case TL_INTR_TxEOC: 1133 bus_dmamap_sync(sc->tl_dmatag, sc->Tx_dmamap, 0, 1134 sizeof(struct tl_Tx_list) * TL_NBUF, 1135 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1136 while ((Tx = sc->active_Tx) != NULL) { 1137 if((le32toh(Tx->hw_list->stat) & TL_TX_CSTAT_CPLT) == 0) 1138 break; 1139 ack++; 1140 #ifdef TLDEBUG_TX 1141 printf("TL_INTR_TxEOC: list 0x%x done\n", 1142 (int)Tx->hw_listaddr); 1143 #endif 1144 Tx->hw_list->stat = 0; 1145 bus_dmamap_sync(sc->tl_dmatag, Tx->m_dmamap, 0, 1146 Tx->m_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1147 bus_dmamap_unload(sc->tl_dmatag, Tx->m_dmamap); 1148 m_freem(Tx->m); 1149 Tx->m = NULL; 1150 sc->active_Tx = Tx->next; 1151 if (sc->active_Tx == NULL) 1152 sc->last_Tx = NULL; 1153 Tx->next = sc->Free_Tx; 1154 sc->Free_Tx = Tx; 1155 } 1156 bus_dmamap_sync(sc->tl_dmatag, sc->Tx_dmamap, 0, 1157 sizeof(struct tl_Tx_list) * TL_NBUF, 1158 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1159 /* if this was an EOC, ACK immediatly */ 1160 if (ack) 1161 sc->tl_if.if_flags &= ~IFF_OACTIVE; 1162 if (int_type == TL_INTR_TxEOC) { 1163 #ifdef TLDEBUG_TX 1164 printf("TL_INTR_TxEOC: ack %d (will be set to 1)\n", 1165 ack); 1166 #endif 1167 TL_HR_WRITE(sc, TL_HOST_CMD, 1 | int_type | 1168 HOST_CMD_ACK | HOST_CMD_IntOn); 1169 if (sc->active_Tx != NULL) { 1170 /* needs a Tx go command */ 1171 TL_HR_WRITE(sc, TL_HOST_CH_PARM, 1172 sc->active_Tx->hw_listaddr); 1173 TL_HR_WRITE(sc, TL_HOST_CMD, HOST_CMD_GO); 1174 } 1175 sc->tl_if.if_timer = 0; 1176 if (IFQ_IS_EMPTY(&sc->tl_if.if_snd) == 0) 1177 tl_ifstart(&sc->tl_if); 1178 return 1; 1179 } 1180 #ifdef TLDEBUG 1181 else { 1182 printf("TL_INTR_TxEOF: ack %d\n", ack); 1183 } 1184 #endif 1185 sc->tl_if.if_timer = 0; 1186 if (IFQ_IS_EMPTY(&sc->tl_if.if_snd) == 0) 1187 tl_ifstart(&sc->tl_if); 1188 break; 1189 case TL_INTR_Stat: 1190 ack++; 1191 #ifdef TLDEBUG 1192 printf("TL_INTR_Stat: ack %d\n", ack); 1193 #endif 1194 tl_read_stats(sc); 1195 break; 1196 case TL_INTR_Adc: 1197 if (int_reg & TL_INTVec_MASK) { 1198 /* adapter check conditions */ 1199 printf("%s: check condition, intvect=0x%x, " 1200 "ch_param=0x%x\n", device_xname(sc->sc_dev), 1201 int_reg & TL_INTVec_MASK, 1202 TL_HR_READ(sc, TL_HOST_CH_PARM)); 1203 tl_reset(sc); 1204 /* schedule reinit of the board */ 1205 callout_reset(&sc->tl_restart_ch, 1, tl_restart, ifp); 1206 return 1; 1207 } else { 1208 uint8_t netstat; 1209 /* Network status */ 1210 netstat = 1211 tl_intreg_read_byte(sc, TL_INT_NET+TL_INT_NetSts); 1212 printf("%s: network status, NetSts=%x\n", 1213 device_xname(sc->sc_dev), netstat); 1214 /* Ack interrupts */ 1215 tl_intreg_write_byte(sc, TL_INT_NET+TL_INT_NetSts, 1216 netstat); 1217 ack++; 1218 } 1219 break; 1220 default: 1221 printf("%s: unhandled interrupt code %x!\n", 1222 device_xname(sc->sc_dev), int_type); 1223 ack++; 1224 } 1225 1226 if (ack) { 1227 /* Ack the interrupt and enable interrupts */ 1228 TL_HR_WRITE(sc, TL_HOST_CMD, ack | int_type | HOST_CMD_ACK | 1229 HOST_CMD_IntOn); 1230 #if NRND > 0 1231 if (RND_ENABLED(&sc->rnd_source)) 1232 rnd_add_uint32(&sc->rnd_source, int_reg); 1233 #endif 1234 return 1; 1235 } 1236 /* ack = 0 ; interrupt was perhaps not our. Just enable interrupts */ 1237 TL_HR_WRITE(sc, TL_HOST_CMD, HOST_CMD_IntOn); 1238 return 0; 1239 } 1240 1241 static int 1242 tl_ifioctl(struct ifnet *ifp, unsigned long cmd, void *data) 1243 { 1244 struct tl_softc *sc = ifp->if_softc; 1245 int s, error; 1246 1247 s = splnet(); 1248 error = ether_ioctl(ifp, cmd, data); 1249 if (error == ENETRESET) { 1250 if (ifp->if_flags & IFF_RUNNING) 1251 tl_addr_filter(sc); 1252 error = 0; 1253 } 1254 splx(s); 1255 return error; 1256 } 1257 1258 static void 1259 tl_ifstart(struct ifnet *ifp) 1260 { 1261 tl_softc_t *sc = ifp->if_softc; 1262 struct mbuf *mb_head; 1263 struct Tx_list *Tx; 1264 int segment, size; 1265 int again, error; 1266 1267 if ((sc->tl_if.if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 1268 return; 1269 txloop: 1270 /* If we don't have more space ... */ 1271 if (sc->Free_Tx == NULL) { 1272 #ifdef TLDEBUG 1273 printf("%s: No free TX list\n", __func__); 1274 #endif 1275 sc->tl_if.if_flags |= IFF_OACTIVE; 1276 return; 1277 } 1278 /* Grab a paquet for output */ 1279 IFQ_DEQUEUE(&ifp->if_snd, mb_head); 1280 if (mb_head == NULL) { 1281 #ifdef TLDEBUG_TX 1282 printf("%s: nothing to send\n", __func__); 1283 #endif 1284 return; 1285 } 1286 Tx = sc->Free_Tx; 1287 sc->Free_Tx = Tx->next; 1288 Tx->next = NULL; 1289 again = 0; 1290 /* 1291 * Go through each of the mbufs in the chain and initialize 1292 * the transmit list descriptors with the physical address 1293 * and size of the mbuf. 1294 */ 1295 tbdinit: 1296 memset(Tx->hw_list, 0, sizeof(struct tl_Tx_list)); 1297 Tx->m = mb_head; 1298 size = mb_head->m_pkthdr.len; 1299 if ((error = bus_dmamap_load_mbuf(sc->tl_dmatag, Tx->m_dmamap, mb_head, 1300 BUS_DMA_NOWAIT)) || (size < ETHER_MIN_TX && 1301 Tx->m_dmamap->dm_nsegs == TL_NSEG)) { 1302 struct mbuf *mn; 1303 /* 1304 * We ran out of segments, or we will. We have to recopy this 1305 * mbuf chain first. 1306 */ 1307 if (error == 0) 1308 bus_dmamap_unload(sc->tl_dmatag, Tx->m_dmamap); 1309 if (again) { 1310 /* already copyed, can't do much more */ 1311 m_freem(mb_head); 1312 goto bad; 1313 } 1314 again = 1; 1315 #ifdef TLDEBUG_TX 1316 printf("%s: need to copy mbuf\n", __func__); 1317 #endif 1318 #ifdef TL_PRIV_STATS 1319 sc->oerr_mcopy++; 1320 #endif 1321 MGETHDR(mn, M_DONTWAIT, MT_DATA); 1322 if (mn == NULL) { 1323 m_freem(mb_head); 1324 goto bad; 1325 } 1326 if (mb_head->m_pkthdr.len > MHLEN) { 1327 MCLGET(mn, M_DONTWAIT); 1328 if ((mn->m_flags & M_EXT) == 0) { 1329 m_freem(mn); 1330 m_freem(mb_head); 1331 goto bad; 1332 } 1333 } 1334 m_copydata(mb_head, 0, mb_head->m_pkthdr.len, 1335 mtod(mn, void *)); 1336 mn->m_pkthdr.len = mn->m_len = mb_head->m_pkthdr.len; 1337 m_freem(mb_head); 1338 mb_head = mn; 1339 goto tbdinit; 1340 } 1341 for (segment = 0; segment < Tx->m_dmamap->dm_nsegs; segment++) { 1342 Tx->hw_list->seg[segment].data_addr = 1343 htole32(Tx->m_dmamap->dm_segs[segment].ds_addr); 1344 Tx->hw_list->seg[segment].data_count = 1345 htole32(Tx->m_dmamap->dm_segs[segment].ds_len); 1346 } 1347 bus_dmamap_sync(sc->tl_dmatag, Tx->m_dmamap, 0, 1348 Tx->m_dmamap->dm_mapsize, 1349 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1350 /* We are at end of mbuf chain. check the size and 1351 * see if it needs to be extended 1352 */ 1353 if (size < ETHER_MIN_TX) { 1354 #ifdef DIAGNOSTIC 1355 if (segment >= TL_NSEG) { 1356 panic("%s: to much segmets (%d)", __func__, segment); 1357 } 1358 #endif 1359 /* 1360 * add the nullbuf in the seg 1361 */ 1362 Tx->hw_list->seg[segment].data_count = 1363 htole32(ETHER_MIN_TX - size); 1364 Tx->hw_list->seg[segment].data_addr = 1365 htole32(sc->null_dmamap->dm_segs[0].ds_addr); 1366 size = ETHER_MIN_TX; 1367 segment++; 1368 } 1369 /* The list is done, finish the list init */ 1370 Tx->hw_list->seg[segment - 1].data_count |= 1371 htole32(TL_LAST_SEG); 1372 Tx->hw_list->stat = htole32((size << 16) | 0x3000); 1373 #ifdef TLDEBUG_TX 1374 printf("%s: sending, Tx : stat = 0x%x\n", device_xname(sc->sc_dev), 1375 le32toh(Tx->hw_list->stat)); 1376 #if 0 1377 for (segment = 0; segment < TL_NSEG; segment++) { 1378 printf(" seg %d addr 0x%x len 0x%x\n", 1379 segment, 1380 le32toh(Tx->hw_list->seg[segment].data_addr), 1381 le32toh(Tx->hw_list->seg[segment].data_count)); 1382 } 1383 #endif 1384 #endif 1385 if (sc->active_Tx == NULL) { 1386 sc->active_Tx = sc->last_Tx = Tx; 1387 #ifdef TLDEBUG_TX 1388 printf("%s: Tx GO, addr=0x%ux\n", device_xname(sc->sc_dev), 1389 (int)Tx->hw_listaddr); 1390 #endif 1391 bus_dmamap_sync(sc->tl_dmatag, sc->Tx_dmamap, 0, 1392 sizeof(struct tl_Tx_list) * TL_NBUF, 1393 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1394 TL_HR_WRITE(sc, TL_HOST_CH_PARM, Tx->hw_listaddr); 1395 TL_HR_WRITE(sc, TL_HOST_CMD, HOST_CMD_GO); 1396 } else { 1397 #ifdef TLDEBUG_TX 1398 printf("%s: Tx addr=0x%ux queued\n", device_xname(sc->sc_dev), 1399 (int)Tx->hw_listaddr); 1400 #endif 1401 sc->last_Tx->hw_list->fwd = htole32(Tx->hw_listaddr); 1402 bus_dmamap_sync(sc->tl_dmatag, sc->Tx_dmamap, 0, 1403 sizeof(struct tl_Tx_list) * TL_NBUF, 1404 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1405 sc->last_Tx->next = Tx; 1406 sc->last_Tx = Tx; 1407 #ifdef DIAGNOSTIC 1408 if (sc->last_Tx->hw_list->fwd & 0x7) 1409 printf("%s: physical addr 0x%x of list not properly " 1410 "aligned\n", 1411 device_xname(sc->sc_dev), 1412 sc->last_Rx->hw_list->fwd); 1413 #endif 1414 } 1415 /* Pass packet to bpf if there is a listener */ 1416 bpf_mtap(ifp, mb_head); 1417 /* 1418 * Set a 5 second timer just in case we don't hear from the card again. 1419 */ 1420 ifp->if_timer = 5; 1421 goto txloop; 1422 bad: 1423 #ifdef TLDEBUG 1424 printf("%s: Out of mbuf, Tx pkt lost\n", __func__); 1425 #endif 1426 Tx->next = sc->Free_Tx; 1427 sc->Free_Tx = Tx; 1428 } 1429 1430 static void 1431 tl_ifwatchdog(struct ifnet *ifp) 1432 { 1433 tl_softc_t *sc = ifp->if_softc; 1434 1435 if ((ifp->if_flags & IFF_RUNNING) == 0) 1436 return; 1437 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1438 ifp->if_oerrors++; 1439 tl_init(ifp); 1440 } 1441 1442 static int 1443 tl_mediachange(struct ifnet *ifp) 1444 { 1445 1446 if (ifp->if_flags & IFF_UP) 1447 tl_init(ifp); 1448 return 0; 1449 } 1450 1451 static int 1452 tl_add_RxBuff(tl_softc_t *sc, struct Rx_list *Rx, struct mbuf *oldm) 1453 { 1454 struct mbuf *m; 1455 int error; 1456 1457 MGETHDR(m, M_DONTWAIT, MT_DATA); 1458 if (m != NULL) { 1459 MCLGET(m, M_DONTWAIT); 1460 if ((m->m_flags & M_EXT) == 0) { 1461 m_freem(m); 1462 if (oldm == NULL) 1463 return 0; 1464 m = oldm; 1465 m->m_data = m->m_ext.ext_buf; 1466 } 1467 } else { 1468 if (oldm == NULL) 1469 return 0; 1470 m = oldm; 1471 m->m_data = m->m_ext.ext_buf; 1472 } 1473 1474 /* (re)init the Rx_list struct */ 1475 1476 Rx->m = m; 1477 if ((error = bus_dmamap_load(sc->tl_dmatag, Rx->m_dmamap, 1478 m->m_ext.ext_buf, m->m_ext.ext_size, NULL, BUS_DMA_NOWAIT)) != 0) { 1479 printf("%s: bus_dmamap_load() failed (error %d) for " 1480 "tl_add_RxBuff ", device_xname(sc->sc_dev), error); 1481 printf("size %d (%d)\n", m->m_pkthdr.len, MCLBYTES); 1482 m_freem(m); 1483 Rx->m = NULL; 1484 return 0; 1485 } 1486 bus_dmamap_sync(sc->tl_dmatag, Rx->m_dmamap, 0, 1487 Rx->m_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 1488 /* 1489 * Move the data pointer up so that the incoming data packet 1490 * will be 32-bit aligned. 1491 */ 1492 m->m_data += 2; 1493 1494 Rx->hw_list->stat = 1495 htole32(((Rx->m_dmamap->dm_segs[0].ds_len - 2) << 16) | 0x3000); 1496 Rx->hw_list->seg.data_count = 1497 htole32(Rx->m_dmamap->dm_segs[0].ds_len - 2); 1498 Rx->hw_list->seg.data_addr = 1499 htole32(Rx->m_dmamap->dm_segs[0].ds_addr + 2); 1500 return (m != oldm); 1501 } 1502 1503 static void 1504 tl_ticks(void *v) 1505 { 1506 tl_softc_t *sc = v; 1507 1508 tl_read_stats(sc); 1509 1510 /* Tick the MII. */ 1511 mii_tick(&sc->tl_mii); 1512 1513 /* read statistics every seconds */ 1514 callout_reset(&sc->tl_tick_ch, hz, tl_ticks, sc); 1515 } 1516 1517 static void 1518 tl_read_stats(tl_softc_t *sc) 1519 { 1520 uint32_t reg; 1521 int ierr_overr; 1522 int ierr_code; 1523 int ierr_crc; 1524 int oerr_underr; 1525 int oerr_deferred; 1526 int oerr_coll; 1527 int oerr_multicoll; 1528 int oerr_exesscoll; 1529 int oerr_latecoll; 1530 int oerr_carrloss; 1531 struct ifnet *ifp = &sc->tl_if; 1532 1533 reg = tl_intreg_read(sc, TL_INT_STATS_TX); 1534 ifp->if_opackets += reg & 0x00ffffff; 1535 oerr_underr = reg >> 24; 1536 1537 reg = tl_intreg_read(sc, TL_INT_STATS_RX); 1538 ifp->if_ipackets += reg & 0x00ffffff; 1539 ierr_overr = reg >> 24; 1540 1541 reg = tl_intreg_read(sc, TL_INT_STATS_FERR); 1542 ierr_crc = (reg & TL_FERR_CRC) >> 16; 1543 ierr_code = (reg & TL_FERR_CODE) >> 24; 1544 oerr_deferred = (reg & TL_FERR_DEF); 1545 1546 reg = tl_intreg_read(sc, TL_INT_STATS_COLL); 1547 oerr_multicoll = (reg & TL_COL_MULTI); 1548 oerr_coll = (reg & TL_COL_SINGLE) >> 16; 1549 1550 reg = tl_intreg_read(sc, TL_INT_LERR); 1551 oerr_exesscoll = (reg & TL_LERR_ECOLL); 1552 oerr_latecoll = (reg & TL_LERR_LCOLL) >> 8; 1553 oerr_carrloss = (reg & TL_LERR_CL) >> 16; 1554 1555 1556 ifp->if_oerrors += oerr_underr + oerr_exesscoll + oerr_latecoll + 1557 oerr_carrloss; 1558 ifp->if_collisions += oerr_coll + oerr_multicoll; 1559 ifp->if_ierrors += ierr_overr + ierr_code + ierr_crc; 1560 1561 if (ierr_overr) 1562 printf("%s: receiver ring buffer overrun\n", 1563 device_xname(sc->sc_dev)); 1564 if (oerr_underr) 1565 printf("%s: transmit buffer underrun\n", 1566 device_xname(sc->sc_dev)); 1567 #ifdef TL_PRIV_STATS 1568 sc->ierr_overr += ierr_overr; 1569 sc->ierr_code += ierr_code; 1570 sc->ierr_crc += ierr_crc; 1571 sc->oerr_underr += oerr_underr; 1572 sc->oerr_deferred += oerr_deferred; 1573 sc->oerr_coll += oerr_coll; 1574 sc->oerr_multicoll += oerr_multicoll; 1575 sc->oerr_exesscoll += oerr_exesscoll; 1576 sc->oerr_latecoll += oerr_latecoll; 1577 sc->oerr_carrloss += oerr_carrloss; 1578 #endif 1579 } 1580 1581 static void 1582 tl_addr_filter(tl_softc_t *sc) 1583 { 1584 struct ether_multistep step; 1585 struct ether_multi *enm; 1586 uint32_t hash[2] = {0, 0}; 1587 int i; 1588 1589 sc->tl_if.if_flags &= ~IFF_ALLMULTI; 1590 ETHER_FIRST_MULTI(step, &sc->tl_ec, enm); 1591 while (enm != NULL) { 1592 #ifdef TLDEBUG 1593 printf("%s: addrs %s %s\n", __func__, 1594 ether_sprintf(enm->enm_addrlo), 1595 ether_sprintf(enm->enm_addrhi)); 1596 #endif 1597 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6) == 0) { 1598 i = tl_multicast_hash(enm->enm_addrlo); 1599 hash[i / 32] |= 1 << (i%32); 1600 } else { 1601 hash[0] = hash[1] = 0xffffffff; 1602 sc->tl_if.if_flags |= IFF_ALLMULTI; 1603 break; 1604 } 1605 ETHER_NEXT_MULTI(step, enm); 1606 } 1607 #ifdef TLDEBUG 1608 printf("%s: hash1 %x has2 %x\n", __func__, hash[0], hash[1]); 1609 #endif 1610 tl_intreg_write(sc, TL_INT_HASH1, hash[0]); 1611 tl_intreg_write(sc, TL_INT_HASH2, hash[1]); 1612 } 1613 1614 static int 1615 tl_multicast_hash(uint8_t *a) 1616 { 1617 int hash; 1618 1619 #define DA(addr,bit) (addr[5 - (bit / 8)] & (1 << (bit % 8))) 1620 #define xor8(a,b,c,d,e,f,g,h) \ 1621 (((a != 0) + (b != 0) + (c != 0) + (d != 0) + \ 1622 (e != 0) + (f != 0) + (g != 0) + (h != 0)) & 1) 1623 1624 hash = xor8(DA(a,0), DA(a, 6), DA(a,12), DA(a,18), DA(a,24), DA(a,30), 1625 DA(a,36), DA(a,42)); 1626 hash |= xor8(DA(a,1), DA(a, 7), DA(a,13), DA(a,19), DA(a,25), DA(a,31), 1627 DA(a,37), DA(a,43)) << 1; 1628 hash |= xor8(DA(a,2), DA(a, 8), DA(a,14), DA(a,20), DA(a,26), DA(a,32), 1629 DA(a,38), DA(a,44)) << 2; 1630 hash |= xor8(DA(a,3), DA(a, 9), DA(a,15), DA(a,21), DA(a,27), DA(a,33), 1631 DA(a,39), DA(a,45)) << 3; 1632 hash |= xor8(DA(a,4), DA(a,10), DA(a,16), DA(a,22), DA(a,28), DA(a,34), 1633 DA(a,40), DA(a,46)) << 4; 1634 hash |= xor8(DA(a,5), DA(a,11), DA(a,17), DA(a,23), DA(a,29), DA(a,35), 1635 DA(a,41), DA(a,47)) << 5; 1636 1637 return hash; 1638 } 1639 1640 #if defined(TLDEBUG_RX) 1641 void 1642 ether_printheader(struct ether_header *eh) 1643 { 1644 uint8_t *c = (uint8_t *)eh; 1645 int i; 1646 1647 for (i = 0; i < sizeof(struct ether_header); i++) 1648 printf("%02x ", (u_int)c[i]); 1649 printf("\n"); 1650 } 1651 #endif 1652
Indexes created Wed Oct 22 00:09:40 GMT 2025