1 /* $OpenBSD: if_sk.c,v 2.33 2003/08/12 05:23:06 nate Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-4-Clause 5 * 6 * Copyright (c) 1997, 1998, 1999, 2000 7 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Bill Paul. 20 * 4. Neither the name of the author nor the names of any co-contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 34 * THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 /*- 37 * Copyright (c) 2003 Nathan L. Binkert <binkertn@umich.edu> 38 * 39 * Permission to use, copy, modify, and distribute this software for any 40 * purpose with or without fee is hereby granted, provided that the above 41 * copyright notice and this permission notice appear in all copies. 42 * 43 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 44 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 45 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 46 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 47 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 48 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 49 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 50 */ 51 52 #include <sys/cdefs.h> 53 /* 54 * SysKonnect SK-NET gigabit ethernet driver for FreeBSD. Supports 55 * the SK-984x series adapters, both single port and dual port. 56 * References: 57 * The XaQti XMAC II datasheet, 58 * https://www.freebsd.org/~wpaul/SysKonnect/xmacii_datasheet_rev_c_9-29.pdf 59 * The SysKonnect GEnesis manual, http://www.syskonnect.com 60 * 61 * Note: XaQti has been acquired by Vitesse, and Vitesse does not have the 62 * XMAC II datasheet online. I have put my copy at people.freebsd.org as a 63 * convenience to others until Vitesse corrects this problem: 64 * 65 * https://people.freebsd.org/~wpaul/SysKonnect/xmacii_datasheet_rev_c_9-29.pdf 66 * 67 * Written by Bill Paul <wpaul@ee.columbia.edu> 68 * Department of Electrical Engineering 69 * Columbia University, New York City 70 */ 71 /* 72 * The SysKonnect gigabit ethernet adapters consist of two main 73 * components: the SysKonnect GEnesis controller chip and the XaQti Corp. 74 * XMAC II gigabit ethernet MAC. The XMAC provides all of the MAC 75 * components and a PHY while the GEnesis controller provides a PCI 76 * interface with DMA support. Each card may have between 512K and 77 * 2MB of SRAM on board depending on the configuration. 78 * 79 * The SysKonnect GEnesis controller can have either one or two XMAC 80 * chips connected to it, allowing single or dual port NIC configurations. 81 * SysKonnect has the distinction of being the only vendor on the market 82 * with a dual port gigabit ethernet NIC. The GEnesis provides dual FIFOs, 83 * dual DMA queues, packet/MAC/transmit arbiters and direct access to the 84 * XMAC registers. This driver takes advantage of these features to allow 85 * both XMACs to operate as independent interfaces. 86 */ 87 88 #include <sys/param.h> 89 #include <sys/systm.h> 90 #include <sys/bus.h> 91 #include <sys/endian.h> 92 #include <sys/mbuf.h> 93 #include <sys/malloc.h> 94 #include <sys/kernel.h> 95 #include <sys/module.h> 96 #include <sys/socket.h> 97 #include <sys/sockio.h> 98 #include <sys/queue.h> 99 #include <sys/sysctl.h> 100 101 #include <net/bpf.h> 102 #include <net/ethernet.h> 103 #include <net/if.h> 104 #include <net/if_var.h> 105 #include <net/if_arp.h> 106 #include <net/if_dl.h> 107 #include <net/if_media.h> 108 #include <net/if_types.h> 109 #include <net/if_vlan_var.h> 110 111 #include <netinet/in.h> 112 #include <netinet/in_systm.h> 113 #include <netinet/ip.h> 114 115 #include <machine/bus.h> 116 #include <machine/in_cksum.h> 117 #include <machine/resource.h> 118 #include <sys/rman.h> 119 120 #include <dev/mii/mii.h> 121 #include <dev/mii/miivar.h> 122 #include <dev/mii/brgphyreg.h> 123 124 #include <dev/pci/pcireg.h> 125 #include <dev/pci/pcivar.h> 126 127 #if 0 128 #define SK_USEIOSPACE 129 #endif 130 131 #include <dev/sk/if_skreg.h> 132 #include <dev/sk/xmaciireg.h> 133 #include <dev/sk/yukonreg.h> 134 135 MODULE_DEPEND(sk, pci, 1, 1, 1); 136 MODULE_DEPEND(sk, ether, 1, 1, 1); 137 MODULE_DEPEND(sk, miibus, 1, 1, 1); 138 139 /* "device miibus" required. See GENERIC if you get errors here. */ 140 #include "miibus_if.h" 141 142 static const struct sk_type sk_devs[] = { 143 { 144 VENDORID_SK, 145 DEVICEID_SK_V1, 146 "SysKonnect Gigabit Ethernet (V1.0)" 147 }, 148 { 149 VENDORID_SK, 150 DEVICEID_SK_V2, 151 "SysKonnect Gigabit Ethernet (V2.0)" 152 }, 153 { 154 VENDORID_MARVELL, 155 DEVICEID_SK_V2, 156 "Marvell Gigabit Ethernet" 157 }, 158 { 159 VENDORID_MARVELL, 160 DEVICEID_BELKIN_5005, 161 "Belkin F5D5005 Gigabit Ethernet" 162 }, 163 { 164 VENDORID_3COM, 165 DEVICEID_3COM_3C940, 166 "3Com 3C940 Gigabit Ethernet" 167 }, 168 { 169 VENDORID_LINKSYS, 170 DEVICEID_LINKSYS_EG1032, 171 "Linksys EG1032 Gigabit Ethernet" 172 }, 173 { 174 VENDORID_DLINK, 175 DEVICEID_DLINK_DGE530T_A1, 176 "D-Link DGE-530T Gigabit Ethernet" 177 }, 178 { 179 VENDORID_DLINK, 180 DEVICEID_DLINK_DGE530T_B1, 181 "D-Link DGE-530T Gigabit Ethernet" 182 }, 183 { 0, 0, NULL } 184 }; 185 186 static int skc_probe(device_t); 187 static int skc_attach(device_t); 188 static void skc_child_deleted(device_t, device_t); 189 static int skc_detach(device_t); 190 static int skc_shutdown(device_t); 191 static int skc_suspend(device_t); 192 static int skc_resume(device_t); 193 static bus_dma_tag_t skc_get_dma_tag(device_t, device_t); 194 static int sk_detach(device_t); 195 static int sk_probe(device_t); 196 static int sk_attach(device_t); 197 static void sk_tick(void *); 198 static void sk_yukon_tick(void *); 199 static void sk_intr(void *); 200 static void sk_intr_xmac(struct sk_if_softc *); 201 static void sk_intr_bcom(struct sk_if_softc *); 202 static void sk_intr_yukon(struct sk_if_softc *); 203 static __inline void sk_rxcksum(if_t, struct mbuf *, u_int32_t); 204 static __inline int sk_rxvalid(struct sk_softc *, u_int32_t, u_int32_t); 205 static void sk_rxeof(struct sk_if_softc *); 206 static void sk_jumbo_rxeof(struct sk_if_softc *); 207 static void sk_txeof(struct sk_if_softc *); 208 static void sk_txcksum(if_t, struct mbuf *, struct sk_tx_desc *); 209 static int sk_encap(struct sk_if_softc *, struct mbuf **); 210 static void sk_start(if_t); 211 static void sk_start_locked(if_t); 212 static int sk_ioctl(if_t, u_long, caddr_t); 213 static void sk_init(void *); 214 static void sk_init_locked(struct sk_if_softc *); 215 static void sk_init_xmac(struct sk_if_softc *); 216 static void sk_init_yukon(struct sk_if_softc *); 217 static void sk_stop(struct sk_if_softc *); 218 static void sk_watchdog(void *); 219 static int sk_ifmedia_upd(if_t); 220 static void sk_ifmedia_sts(if_t, struct ifmediareq *); 221 static void sk_reset(struct sk_softc *); 222 static __inline void sk_discard_rxbuf(struct sk_if_softc *, int); 223 static __inline void sk_discard_jumbo_rxbuf(struct sk_if_softc *, int); 224 static int sk_newbuf(struct sk_if_softc *, int); 225 static int sk_jumbo_newbuf(struct sk_if_softc *, int); 226 static void sk_dmamap_cb(void *, bus_dma_segment_t *, int, int); 227 static int sk_dma_alloc(struct sk_if_softc *); 228 static int sk_dma_jumbo_alloc(struct sk_if_softc *); 229 static void sk_dma_free(struct sk_if_softc *); 230 static void sk_dma_jumbo_free(struct sk_if_softc *); 231 static int sk_init_rx_ring(struct sk_if_softc *); 232 static int sk_init_jumbo_rx_ring(struct sk_if_softc *); 233 static void sk_init_tx_ring(struct sk_if_softc *); 234 static u_int32_t sk_win_read_4(struct sk_softc *, int); 235 static u_int16_t sk_win_read_2(struct sk_softc *, int); 236 static u_int8_t sk_win_read_1(struct sk_softc *, int); 237 static void sk_win_write_4(struct sk_softc *, int, u_int32_t); 238 static void sk_win_write_2(struct sk_softc *, int, u_int32_t); 239 static void sk_win_write_1(struct sk_softc *, int, u_int32_t); 240 241 static int sk_miibus_readreg(device_t, int, int); 242 static int sk_miibus_writereg(device_t, int, int, int); 243 static void sk_miibus_statchg(device_t); 244 245 static int sk_xmac_miibus_readreg(struct sk_if_softc *, int, int); 246 static int sk_xmac_miibus_writereg(struct sk_if_softc *, int, int, 247 int); 248 static void sk_xmac_miibus_statchg(struct sk_if_softc *); 249 250 static int sk_marv_miibus_readreg(struct sk_if_softc *, int, int); 251 static int sk_marv_miibus_writereg(struct sk_if_softc *, int, int, 252 int); 253 static void sk_marv_miibus_statchg(struct sk_if_softc *); 254 255 static uint32_t sk_xmchash(const uint8_t *); 256 static void sk_setfilt(struct sk_if_softc *, u_int16_t *, int); 257 static void sk_rxfilter(struct sk_if_softc *); 258 static void sk_rxfilter_genesis(struct sk_if_softc *); 259 static void sk_rxfilter_yukon(struct sk_if_softc *); 260 261 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high); 262 static int sysctl_hw_sk_int_mod(SYSCTL_HANDLER_ARGS); 263 264 /* Tunables. */ 265 static int jumbo_disable = 0; 266 TUNABLE_INT("hw.skc.jumbo_disable", &jumbo_disable); 267 268 /* 269 * It seems that SK-NET GENESIS supports very simple checksum offload 270 * capability for Tx and I believe it can generate 0 checksum value for 271 * UDP packets in Tx as the hardware can't differenciate UDP packets from 272 * TCP packets. 0 chcecksum value for UDP packet is an invalid one as it 273 * means sender didn't perforam checksum computation. For the safety I 274 * disabled UDP checksum offload capability at the moment. 275 */ 276 #define SK_CSUM_FEATURES (CSUM_TCP) 277 278 /* 279 * Note that we have newbus methods for both the GEnesis controller 280 * itself and the XMAC(s). The XMACs are children of the GEnesis, and 281 * the miibus code is a child of the XMACs. We need to do it this way 282 * so that the miibus drivers can access the PHY registers on the 283 * right PHY. It's not quite what I had in mind, but it's the only 284 * design that achieves the desired effect. 285 */ 286 static device_method_t skc_methods[] = { 287 /* Device interface */ 288 DEVMETHOD(device_probe, skc_probe), 289 DEVMETHOD(device_attach, skc_attach), 290 DEVMETHOD(device_detach, skc_detach), 291 DEVMETHOD(device_suspend, skc_suspend), 292 DEVMETHOD(device_resume, skc_resume), 293 DEVMETHOD(device_shutdown, skc_shutdown), 294 295 DEVMETHOD(bus_child_deleted, skc_child_deleted), 296 DEVMETHOD(bus_get_dma_tag, skc_get_dma_tag), 297 298 DEVMETHOD_END 299 }; 300 301 static driver_t skc_driver = { 302 "skc", 303 skc_methods, 304 sizeof(struct sk_softc) 305 }; 306 307 static device_method_t sk_methods[] = { 308 /* Device interface */ 309 DEVMETHOD(device_probe, sk_probe), 310 DEVMETHOD(device_attach, sk_attach), 311 DEVMETHOD(device_detach, sk_detach), 312 DEVMETHOD(device_shutdown, bus_generic_shutdown), 313 314 /* MII interface */ 315 DEVMETHOD(miibus_readreg, sk_miibus_readreg), 316 DEVMETHOD(miibus_writereg, sk_miibus_writereg), 317 DEVMETHOD(miibus_statchg, sk_miibus_statchg), 318 319 DEVMETHOD_END 320 }; 321 322 static driver_t sk_driver = { 323 "sk", 324 sk_methods, 325 sizeof(struct sk_if_softc) 326 }; 327 328 DRIVER_MODULE(skc, pci, skc_driver, NULL, NULL); 329 DRIVER_MODULE(sk, skc, sk_driver, NULL, NULL); 330 DRIVER_MODULE(miibus, sk, miibus_driver, NULL, NULL); 331 332 static struct resource_spec sk_res_spec_io[] = { 333 { SYS_RES_IOPORT, PCIR_BAR(1), RF_ACTIVE }, 334 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, 335 { -1, 0, 0 } 336 }; 337 338 static struct resource_spec sk_res_spec_mem[] = { 339 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE }, 340 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, 341 { -1, 0, 0 } 342 }; 343 344 #define SK_SETBIT(sc, reg, x) \ 345 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | x) 346 347 #define SK_CLRBIT(sc, reg, x) \ 348 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~x) 349 350 #define SK_WIN_SETBIT_4(sc, reg, x) \ 351 sk_win_write_4(sc, reg, sk_win_read_4(sc, reg) | x) 352 353 #define SK_WIN_CLRBIT_4(sc, reg, x) \ 354 sk_win_write_4(sc, reg, sk_win_read_4(sc, reg) & ~x) 355 356 #define SK_WIN_SETBIT_2(sc, reg, x) \ 357 sk_win_write_2(sc, reg, sk_win_read_2(sc, reg) | x) 358 359 #define SK_WIN_CLRBIT_2(sc, reg, x) \ 360 sk_win_write_2(sc, reg, sk_win_read_2(sc, reg) & ~x) 361 362 static u_int32_t 363 sk_win_read_4(struct sk_softc *sc, int reg) 364 { 365 #ifdef SK_USEIOSPACE 366 CSR_WRITE_4(sc, SK_RAP, SK_WIN(reg)); 367 return(CSR_READ_4(sc, SK_WIN_BASE + SK_REG(reg))); 368 #else 369 return(CSR_READ_4(sc, reg)); 370 #endif 371 } 372 373 static u_int16_t 374 sk_win_read_2(struct sk_softc *sc, int reg) 375 { 376 #ifdef SK_USEIOSPACE 377 CSR_WRITE_4(sc, SK_RAP, SK_WIN(reg)); 378 return(CSR_READ_2(sc, SK_WIN_BASE + SK_REG(reg))); 379 #else 380 return(CSR_READ_2(sc, reg)); 381 #endif 382 } 383 384 static u_int8_t 385 sk_win_read_1(struct sk_softc *sc, int reg) 386 { 387 #ifdef SK_USEIOSPACE 388 CSR_WRITE_4(sc, SK_RAP, SK_WIN(reg)); 389 return(CSR_READ_1(sc, SK_WIN_BASE + SK_REG(reg))); 390 #else 391 return(CSR_READ_1(sc, reg)); 392 #endif 393 } 394 395 static void 396 sk_win_write_4(struct sk_softc *sc, int reg, u_int32_t val) 397 { 398 #ifdef SK_USEIOSPACE 399 CSR_WRITE_4(sc, SK_RAP, SK_WIN(reg)); 400 CSR_WRITE_4(sc, SK_WIN_BASE + SK_REG(reg), val); 401 #else 402 CSR_WRITE_4(sc, reg, val); 403 #endif 404 return; 405 } 406 407 static void 408 sk_win_write_2(struct sk_softc *sc, int reg, u_int32_t val) 409 { 410 #ifdef SK_USEIOSPACE 411 CSR_WRITE_4(sc, SK_RAP, SK_WIN(reg)); 412 CSR_WRITE_2(sc, SK_WIN_BASE + SK_REG(reg), val); 413 #else 414 CSR_WRITE_2(sc, reg, val); 415 #endif 416 return; 417 } 418 419 static void 420 sk_win_write_1(struct sk_softc *sc, int reg, u_int32_t val) 421 { 422 #ifdef SK_USEIOSPACE 423 CSR_WRITE_4(sc, SK_RAP, SK_WIN(reg)); 424 CSR_WRITE_1(sc, SK_WIN_BASE + SK_REG(reg), val); 425 #else 426 CSR_WRITE_1(sc, reg, val); 427 #endif 428 return; 429 } 430 431 static int 432 sk_miibus_readreg(device_t dev, int phy, int reg) 433 { 434 struct sk_if_softc *sc_if; 435 int v; 436 437 sc_if = device_get_softc(dev); 438 439 SK_IF_MII_LOCK(sc_if); 440 switch(sc_if->sk_softc->sk_type) { 441 case SK_GENESIS: 442 v = sk_xmac_miibus_readreg(sc_if, phy, reg); 443 break; 444 case SK_YUKON: 445 case SK_YUKON_LITE: 446 case SK_YUKON_LP: 447 v = sk_marv_miibus_readreg(sc_if, phy, reg); 448 break; 449 default: 450 v = 0; 451 break; 452 } 453 SK_IF_MII_UNLOCK(sc_if); 454 455 return (v); 456 } 457 458 static int 459 sk_miibus_writereg(device_t dev, int phy, int reg, int val) 460 { 461 struct sk_if_softc *sc_if; 462 int v; 463 464 sc_if = device_get_softc(dev); 465 466 SK_IF_MII_LOCK(sc_if); 467 switch(sc_if->sk_softc->sk_type) { 468 case SK_GENESIS: 469 v = sk_xmac_miibus_writereg(sc_if, phy, reg, val); 470 break; 471 case SK_YUKON: 472 case SK_YUKON_LITE: 473 case SK_YUKON_LP: 474 v = sk_marv_miibus_writereg(sc_if, phy, reg, val); 475 break; 476 default: 477 v = 0; 478 break; 479 } 480 SK_IF_MII_UNLOCK(sc_if); 481 482 return (v); 483 } 484 485 static void 486 sk_miibus_statchg(device_t dev) 487 { 488 struct sk_if_softc *sc_if; 489 490 sc_if = device_get_softc(dev); 491 492 SK_IF_MII_LOCK(sc_if); 493 switch(sc_if->sk_softc->sk_type) { 494 case SK_GENESIS: 495 sk_xmac_miibus_statchg(sc_if); 496 break; 497 case SK_YUKON: 498 case SK_YUKON_LITE: 499 case SK_YUKON_LP: 500 sk_marv_miibus_statchg(sc_if); 501 break; 502 } 503 SK_IF_MII_UNLOCK(sc_if); 504 505 return; 506 } 507 508 static int 509 sk_xmac_miibus_readreg(struct sk_if_softc *sc_if, int phy, int reg) 510 { 511 int i; 512 513 SK_XM_WRITE_2(sc_if, XM_PHY_ADDR, reg|(phy << 8)); 514 SK_XM_READ_2(sc_if, XM_PHY_DATA); 515 if (sc_if->sk_phytype != SK_PHYTYPE_XMAC) { 516 for (i = 0; i < SK_TIMEOUT; i++) { 517 DELAY(1); 518 if (SK_XM_READ_2(sc_if, XM_MMUCMD) & 519 XM_MMUCMD_PHYDATARDY) 520 break; 521 } 522 523 if (i == SK_TIMEOUT) { 524 if_printf(sc_if->sk_ifp, "phy failed to come ready\n"); 525 return(0); 526 } 527 } 528 DELAY(1); 529 i = SK_XM_READ_2(sc_if, XM_PHY_DATA); 530 531 return(i); 532 } 533 534 static int 535 sk_xmac_miibus_writereg(struct sk_if_softc *sc_if, int phy, int reg, int val) 536 { 537 int i; 538 539 SK_XM_WRITE_2(sc_if, XM_PHY_ADDR, reg|(phy << 8)); 540 for (i = 0; i < SK_TIMEOUT; i++) { 541 if (!(SK_XM_READ_2(sc_if, XM_MMUCMD) & XM_MMUCMD_PHYBUSY)) 542 break; 543 } 544 545 if (i == SK_TIMEOUT) { 546 if_printf(sc_if->sk_ifp, "phy failed to come ready\n"); 547 return (ETIMEDOUT); 548 } 549 550 SK_XM_WRITE_2(sc_if, XM_PHY_DATA, val); 551 for (i = 0; i < SK_TIMEOUT; i++) { 552 DELAY(1); 553 if (!(SK_XM_READ_2(sc_if, XM_MMUCMD) & XM_MMUCMD_PHYBUSY)) 554 break; 555 } 556 if (i == SK_TIMEOUT) 557 if_printf(sc_if->sk_ifp, "phy write timed out\n"); 558 559 return(0); 560 } 561 562 static void 563 sk_xmac_miibus_statchg(struct sk_if_softc *sc_if) 564 { 565 struct mii_data *mii; 566 567 mii = device_get_softc(sc_if->sk_miibus); 568 569 /* 570 * If this is a GMII PHY, manually set the XMAC's 571 * duplex mode accordingly. 572 */ 573 if (sc_if->sk_phytype != SK_PHYTYPE_XMAC) { 574 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 575 SK_XM_SETBIT_2(sc_if, XM_MMUCMD, XM_MMUCMD_GMIIFDX); 576 } else { 577 SK_XM_CLRBIT_2(sc_if, XM_MMUCMD, XM_MMUCMD_GMIIFDX); 578 } 579 } 580 } 581 582 static int 583 sk_marv_miibus_readreg(struct sk_if_softc *sc_if, int phy, int reg) 584 { 585 u_int16_t val; 586 int i; 587 588 if (sc_if->sk_phytype != SK_PHYTYPE_MARV_COPPER && 589 sc_if->sk_phytype != SK_PHYTYPE_MARV_FIBER) { 590 return(0); 591 } 592 593 SK_YU_WRITE_2(sc_if, YUKON_SMICR, YU_SMICR_PHYAD(phy) | 594 YU_SMICR_REGAD(reg) | YU_SMICR_OP_READ); 595 596 for (i = 0; i < SK_TIMEOUT; i++) { 597 DELAY(1); 598 val = SK_YU_READ_2(sc_if, YUKON_SMICR); 599 if (val & YU_SMICR_READ_VALID) 600 break; 601 } 602 603 if (i == SK_TIMEOUT) { 604 if_printf(sc_if->sk_ifp, "phy failed to come ready\n"); 605 return(0); 606 } 607 608 val = SK_YU_READ_2(sc_if, YUKON_SMIDR); 609 610 return(val); 611 } 612 613 static int 614 sk_marv_miibus_writereg(struct sk_if_softc *sc_if, int phy, int reg, int val) 615 { 616 int i; 617 618 SK_YU_WRITE_2(sc_if, YUKON_SMIDR, val); 619 SK_YU_WRITE_2(sc_if, YUKON_SMICR, YU_SMICR_PHYAD(phy) | 620 YU_SMICR_REGAD(reg) | YU_SMICR_OP_WRITE); 621 622 for (i = 0; i < SK_TIMEOUT; i++) { 623 DELAY(1); 624 if ((SK_YU_READ_2(sc_if, YUKON_SMICR) & YU_SMICR_BUSY) == 0) 625 break; 626 } 627 if (i == SK_TIMEOUT) 628 if_printf(sc_if->sk_ifp, "phy write timeout\n"); 629 630 return(0); 631 } 632 633 static void 634 sk_marv_miibus_statchg(struct sk_if_softc *sc_if) 635 { 636 return; 637 } 638 639 #define HASH_BITS 6 640 641 static u_int32_t 642 sk_xmchash(const uint8_t *addr) 643 { 644 uint32_t crc; 645 646 /* Compute CRC for the address value. */ 647 crc = ether_crc32_le(addr, ETHER_ADDR_LEN); 648 649 return (~crc & ((1 << HASH_BITS) - 1)); 650 } 651 652 static void 653 sk_setfilt(struct sk_if_softc *sc_if, u_int16_t *addr, int slot) 654 { 655 int base; 656 657 base = XM_RXFILT_ENTRY(slot); 658 659 SK_XM_WRITE_2(sc_if, base, addr[0]); 660 SK_XM_WRITE_2(sc_if, base + 2, addr[1]); 661 SK_XM_WRITE_2(sc_if, base + 4, addr[2]); 662 663 return; 664 } 665 666 static void 667 sk_rxfilter(struct sk_if_softc *sc_if) 668 { 669 struct sk_softc *sc; 670 671 SK_IF_LOCK_ASSERT(sc_if); 672 673 sc = sc_if->sk_softc; 674 if (sc->sk_type == SK_GENESIS) 675 sk_rxfilter_genesis(sc_if); 676 else 677 sk_rxfilter_yukon(sc_if); 678 } 679 680 struct sk_add_maddr_genesis_ctx { 681 struct sk_if_softc *sc_if; 682 uint32_t hashes[2]; 683 uint32_t mode; 684 }; 685 686 static u_int 687 sk_add_maddr_genesis(void *arg, struct sockaddr_dl *sdl, u_int cnt) 688 { 689 struct sk_add_maddr_genesis_ctx *ctx = arg; 690 int h; 691 692 /* 693 * Program the first XM_RXFILT_MAX multicast groups 694 * into the perfect filter. 695 */ 696 if (cnt + 1 < XM_RXFILT_MAX) { 697 sk_setfilt(ctx->sc_if, (uint16_t *)LLADDR(sdl), cnt + 1); 698 ctx->mode |= XM_MODE_RX_USE_PERFECT; 699 return (1); 700 } 701 h = sk_xmchash((const uint8_t *)LLADDR(sdl)); 702 if (h < 32) 703 ctx->hashes[0] |= (1 << h); 704 else 705 ctx->hashes[1] |= (1 << (h - 32)); 706 ctx->mode |= XM_MODE_RX_USE_HASH; 707 708 return (1); 709 } 710 711 static void 712 sk_rxfilter_genesis(struct sk_if_softc *sc_if) 713 { 714 if_t ifp = sc_if->sk_ifp; 715 struct sk_add_maddr_genesis_ctx ctx = { sc_if, { 0, 0 } }; 716 int i; 717 u_int16_t dummy[] = { 0, 0, 0 }; 718 719 SK_IF_LOCK_ASSERT(sc_if); 720 721 ctx.mode = SK_XM_READ_4(sc_if, XM_MODE); 722 ctx.mode &= ~(XM_MODE_RX_PROMISC | XM_MODE_RX_USE_HASH | 723 XM_MODE_RX_USE_PERFECT); 724 /* First, zot all the existing perfect filters. */ 725 for (i = 1; i < XM_RXFILT_MAX; i++) 726 sk_setfilt(sc_if, dummy, i); 727 728 /* Now program new ones. */ 729 if (if_getflags(ifp) & IFF_ALLMULTI || if_getflags(ifp) & IFF_PROMISC) { 730 if (if_getflags(ifp) & IFF_ALLMULTI) 731 ctx.mode |= XM_MODE_RX_USE_HASH; 732 if (if_getflags(ifp) & IFF_PROMISC) 733 ctx.mode |= XM_MODE_RX_PROMISC; 734 ctx.hashes[0] = 0xFFFFFFFF; 735 ctx.hashes[1] = 0xFFFFFFFF; 736 } else 737 /* XXX want to maintain reverse semantics */ 738 if_foreach_llmaddr(ifp, sk_add_maddr_genesis, &ctx); 739 740 SK_XM_WRITE_4(sc_if, XM_MODE, ctx.mode); 741 SK_XM_WRITE_4(sc_if, XM_MAR0, ctx.hashes[0]); 742 SK_XM_WRITE_4(sc_if, XM_MAR2, ctx.hashes[1]); 743 } 744 745 static u_int 746 sk_hash_maddr_yukon(void *arg, struct sockaddr_dl *sdl, u_int cnt) 747 { 748 uint32_t crc, *hashes = arg; 749 750 crc = ether_crc32_be(LLADDR(sdl), ETHER_ADDR_LEN); 751 /* Just want the 6 least significant bits. */ 752 crc &= 0x3f; 753 /* Set the corresponding bit in the hash table. */ 754 hashes[crc >> 5] |= 1 << (crc & 0x1f); 755 756 return (1); 757 } 758 759 static void 760 sk_rxfilter_yukon(struct sk_if_softc *sc_if) 761 { 762 if_t ifp; 763 uint32_t hashes[2] = { 0, 0 }, mode; 764 765 SK_IF_LOCK_ASSERT(sc_if); 766 767 ifp = sc_if->sk_ifp; 768 mode = SK_YU_READ_2(sc_if, YUKON_RCR); 769 if (if_getflags(ifp) & IFF_PROMISC) 770 mode &= ~(YU_RCR_UFLEN | YU_RCR_MUFLEN); 771 else if (if_getflags(ifp) & IFF_ALLMULTI) { 772 mode |= YU_RCR_UFLEN | YU_RCR_MUFLEN; 773 hashes[0] = 0xFFFFFFFF; 774 hashes[1] = 0xFFFFFFFF; 775 } else { 776 mode |= YU_RCR_UFLEN; 777 if_foreach_llmaddr(ifp, sk_hash_maddr_yukon, hashes); 778 if (hashes[0] != 0 || hashes[1] != 0) 779 mode |= YU_RCR_MUFLEN; 780 } 781 782 SK_YU_WRITE_2(sc_if, YUKON_MCAH1, hashes[0] & 0xffff); 783 SK_YU_WRITE_2(sc_if, YUKON_MCAH2, (hashes[0] >> 16) & 0xffff); 784 SK_YU_WRITE_2(sc_if, YUKON_MCAH3, hashes[1] & 0xffff); 785 SK_YU_WRITE_2(sc_if, YUKON_MCAH4, (hashes[1] >> 16) & 0xffff); 786 SK_YU_WRITE_2(sc_if, YUKON_RCR, mode); 787 } 788 789 static int 790 sk_init_rx_ring(struct sk_if_softc *sc_if) 791 { 792 struct sk_ring_data *rd; 793 bus_addr_t addr; 794 u_int32_t csum_start; 795 int i; 796 797 sc_if->sk_cdata.sk_rx_cons = 0; 798 799 csum_start = (ETHER_HDR_LEN + sizeof(struct ip)) << 16 | 800 ETHER_HDR_LEN; 801 rd = &sc_if->sk_rdata; 802 bzero(rd->sk_rx_ring, sizeof(struct sk_rx_desc) * SK_RX_RING_CNT); 803 for (i = 0; i < SK_RX_RING_CNT; i++) { 804 if (sk_newbuf(sc_if, i) != 0) 805 return (ENOBUFS); 806 if (i == (SK_RX_RING_CNT - 1)) 807 addr = SK_RX_RING_ADDR(sc_if, 0); 808 else 809 addr = SK_RX_RING_ADDR(sc_if, i + 1); 810 rd->sk_rx_ring[i].sk_next = htole32(SK_ADDR_LO(addr)); 811 rd->sk_rx_ring[i].sk_csum_start = htole32(csum_start); 812 } 813 814 bus_dmamap_sync(sc_if->sk_cdata.sk_rx_ring_tag, 815 sc_if->sk_cdata.sk_rx_ring_map, 816 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 817 818 return(0); 819 } 820 821 static int 822 sk_init_jumbo_rx_ring(struct sk_if_softc *sc_if) 823 { 824 struct sk_ring_data *rd; 825 bus_addr_t addr; 826 u_int32_t csum_start; 827 int i; 828 829 sc_if->sk_cdata.sk_jumbo_rx_cons = 0; 830 831 csum_start = ((ETHER_HDR_LEN + sizeof(struct ip)) << 16) | 832 ETHER_HDR_LEN; 833 rd = &sc_if->sk_rdata; 834 bzero(rd->sk_jumbo_rx_ring, 835 sizeof(struct sk_rx_desc) * SK_JUMBO_RX_RING_CNT); 836 for (i = 0; i < SK_JUMBO_RX_RING_CNT; i++) { 837 if (sk_jumbo_newbuf(sc_if, i) != 0) 838 return (ENOBUFS); 839 if (i == (SK_JUMBO_RX_RING_CNT - 1)) 840 addr = SK_JUMBO_RX_RING_ADDR(sc_if, 0); 841 else 842 addr = SK_JUMBO_RX_RING_ADDR(sc_if, i + 1); 843 rd->sk_jumbo_rx_ring[i].sk_next = htole32(SK_ADDR_LO(addr)); 844 rd->sk_jumbo_rx_ring[i].sk_csum_start = htole32(csum_start); 845 } 846 847 bus_dmamap_sync(sc_if->sk_cdata.sk_jumbo_rx_ring_tag, 848 sc_if->sk_cdata.sk_jumbo_rx_ring_map, 849 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 850 851 return (0); 852 } 853 854 static void 855 sk_init_tx_ring(struct sk_if_softc *sc_if) 856 { 857 struct sk_ring_data *rd; 858 struct sk_txdesc *txd; 859 bus_addr_t addr; 860 int i; 861 862 STAILQ_INIT(&sc_if->sk_cdata.sk_txfreeq); 863 STAILQ_INIT(&sc_if->sk_cdata.sk_txbusyq); 864 865 sc_if->sk_cdata.sk_tx_prod = 0; 866 sc_if->sk_cdata.sk_tx_cons = 0; 867 sc_if->sk_cdata.sk_tx_cnt = 0; 868 869 rd = &sc_if->sk_rdata; 870 bzero(rd->sk_tx_ring, sizeof(struct sk_tx_desc) * SK_TX_RING_CNT); 871 for (i = 0; i < SK_TX_RING_CNT; i++) { 872 if (i == (SK_TX_RING_CNT - 1)) 873 addr = SK_TX_RING_ADDR(sc_if, 0); 874 else 875 addr = SK_TX_RING_ADDR(sc_if, i + 1); 876 rd->sk_tx_ring[i].sk_next = htole32(SK_ADDR_LO(addr)); 877 txd = &sc_if->sk_cdata.sk_txdesc[i]; 878 STAILQ_INSERT_TAIL(&sc_if->sk_cdata.sk_txfreeq, txd, tx_q); 879 } 880 881 bus_dmamap_sync(sc_if->sk_cdata.sk_tx_ring_tag, 882 sc_if->sk_cdata.sk_tx_ring_map, 883 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 884 } 885 886 static __inline void 887 sk_discard_rxbuf(struct sk_if_softc *sc_if, int idx) 888 { 889 struct sk_rx_desc *r; 890 struct sk_rxdesc *rxd; 891 struct mbuf *m; 892 893 r = &sc_if->sk_rdata.sk_rx_ring[idx]; 894 rxd = &sc_if->sk_cdata.sk_rxdesc[idx]; 895 m = rxd->rx_m; 896 r->sk_ctl = htole32(m->m_len | SK_RXSTAT | SK_OPCODE_CSUM); 897 } 898 899 static __inline void 900 sk_discard_jumbo_rxbuf(struct sk_if_softc *sc_if, int idx) 901 { 902 struct sk_rx_desc *r; 903 struct sk_rxdesc *rxd; 904 struct mbuf *m; 905 906 r = &sc_if->sk_rdata.sk_jumbo_rx_ring[idx]; 907 rxd = &sc_if->sk_cdata.sk_jumbo_rxdesc[idx]; 908 m = rxd->rx_m; 909 r->sk_ctl = htole32(m->m_len | SK_RXSTAT | SK_OPCODE_CSUM); 910 } 911 912 static int 913 sk_newbuf(struct sk_if_softc *sc_if, int idx) 914 { 915 struct sk_rx_desc *r; 916 struct sk_rxdesc *rxd; 917 struct mbuf *m; 918 bus_dma_segment_t segs[1]; 919 bus_dmamap_t map; 920 int nsegs; 921 922 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 923 if (m == NULL) 924 return (ENOBUFS); 925 m->m_len = m->m_pkthdr.len = MCLBYTES; 926 m_adj(m, ETHER_ALIGN); 927 928 if (bus_dmamap_load_mbuf_sg(sc_if->sk_cdata.sk_rx_tag, 929 sc_if->sk_cdata.sk_rx_sparemap, m, segs, &nsegs, 0) != 0) { 930 m_freem(m); 931 return (ENOBUFS); 932 } 933 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 934 935 rxd = &sc_if->sk_cdata.sk_rxdesc[idx]; 936 if (rxd->rx_m != NULL) { 937 bus_dmamap_sync(sc_if->sk_cdata.sk_rx_tag, rxd->rx_dmamap, 938 BUS_DMASYNC_POSTREAD); 939 bus_dmamap_unload(sc_if->sk_cdata.sk_rx_tag, rxd->rx_dmamap); 940 } 941 map = rxd->rx_dmamap; 942 rxd->rx_dmamap = sc_if->sk_cdata.sk_rx_sparemap; 943 sc_if->sk_cdata.sk_rx_sparemap = map; 944 bus_dmamap_sync(sc_if->sk_cdata.sk_rx_tag, rxd->rx_dmamap, 945 BUS_DMASYNC_PREREAD); 946 rxd->rx_m = m; 947 r = &sc_if->sk_rdata.sk_rx_ring[idx]; 948 r->sk_data_lo = htole32(SK_ADDR_LO(segs[0].ds_addr)); 949 r->sk_data_hi = htole32(SK_ADDR_HI(segs[0].ds_addr)); 950 r->sk_ctl = htole32(segs[0].ds_len | SK_RXSTAT | SK_OPCODE_CSUM); 951 952 return (0); 953 } 954 955 static int 956 sk_jumbo_newbuf(struct sk_if_softc *sc_if, int idx) 957 { 958 struct sk_rx_desc *r; 959 struct sk_rxdesc *rxd; 960 struct mbuf *m; 961 bus_dma_segment_t segs[1]; 962 bus_dmamap_t map; 963 int nsegs; 964 965 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUM9BYTES); 966 if (m == NULL) 967 return (ENOBUFS); 968 m->m_pkthdr.len = m->m_len = MJUM9BYTES; 969 /* 970 * Adjust alignment so packet payload begins on a 971 * longword boundary. Mandatory for Alpha, useful on 972 * x86 too. 973 */ 974 m_adj(m, ETHER_ALIGN); 975 976 if (bus_dmamap_load_mbuf_sg(sc_if->sk_cdata.sk_jumbo_rx_tag, 977 sc_if->sk_cdata.sk_jumbo_rx_sparemap, m, segs, &nsegs, 0) != 0) { 978 m_freem(m); 979 return (ENOBUFS); 980 } 981 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 982 983 rxd = &sc_if->sk_cdata.sk_jumbo_rxdesc[idx]; 984 if (rxd->rx_m != NULL) { 985 bus_dmamap_sync(sc_if->sk_cdata.sk_jumbo_rx_tag, rxd->rx_dmamap, 986 BUS_DMASYNC_POSTREAD); 987 bus_dmamap_unload(sc_if->sk_cdata.sk_jumbo_rx_tag, 988 rxd->rx_dmamap); 989 } 990 map = rxd->rx_dmamap; 991 rxd->rx_dmamap = sc_if->sk_cdata.sk_jumbo_rx_sparemap; 992 sc_if->sk_cdata.sk_jumbo_rx_sparemap = map; 993 bus_dmamap_sync(sc_if->sk_cdata.sk_jumbo_rx_tag, rxd->rx_dmamap, 994 BUS_DMASYNC_PREREAD); 995 rxd->rx_m = m; 996 r = &sc_if->sk_rdata.sk_jumbo_rx_ring[idx]; 997 r->sk_data_lo = htole32(SK_ADDR_LO(segs[0].ds_addr)); 998 r->sk_data_hi = htole32(SK_ADDR_HI(segs[0].ds_addr)); 999 r->sk_ctl = htole32(segs[0].ds_len | SK_RXSTAT | SK_OPCODE_CSUM); 1000 1001 return (0); 1002 } 1003 1004 /* 1005 * Set media options. 1006 */ 1007 static int 1008 sk_ifmedia_upd(if_t ifp) 1009 { 1010 struct sk_if_softc *sc_if = if_getsoftc(ifp); 1011 struct mii_data *mii; 1012 1013 mii = device_get_softc(sc_if->sk_miibus); 1014 sk_init(sc_if); 1015 mii_mediachg(mii); 1016 1017 return(0); 1018 } 1019 1020 /* 1021 * Report current media status. 1022 */ 1023 static void 1024 sk_ifmedia_sts(if_t ifp, struct ifmediareq *ifmr) 1025 { 1026 struct sk_if_softc *sc_if; 1027 struct mii_data *mii; 1028 1029 sc_if = if_getsoftc(ifp); 1030 mii = device_get_softc(sc_if->sk_miibus); 1031 1032 mii_pollstat(mii); 1033 ifmr->ifm_active = mii->mii_media_active; 1034 ifmr->ifm_status = mii->mii_media_status; 1035 1036 return; 1037 } 1038 1039 static int 1040 sk_ioctl(if_t ifp, u_long command, caddr_t data) 1041 { 1042 struct sk_if_softc *sc_if = if_getsoftc(ifp); 1043 struct ifreq *ifr = (struct ifreq *) data; 1044 int error, mask; 1045 struct mii_data *mii; 1046 1047 error = 0; 1048 switch(command) { 1049 case SIOCSIFMTU: 1050 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > SK_JUMBO_MTU) 1051 error = EINVAL; 1052 else if (if_getmtu(ifp) != ifr->ifr_mtu) { 1053 if (sc_if->sk_jumbo_disable != 0 && 1054 ifr->ifr_mtu > SK_MAX_FRAMELEN) 1055 error = EINVAL; 1056 else { 1057 SK_IF_LOCK(sc_if); 1058 if_setmtu(ifp, ifr->ifr_mtu); 1059 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) { 1060 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 1061 sk_init_locked(sc_if); 1062 } 1063 SK_IF_UNLOCK(sc_if); 1064 } 1065 } 1066 break; 1067 case SIOCSIFFLAGS: 1068 SK_IF_LOCK(sc_if); 1069 if (if_getflags(ifp) & IFF_UP) { 1070 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) { 1071 if ((if_getflags(ifp) ^ sc_if->sk_if_flags) 1072 & (IFF_PROMISC | IFF_ALLMULTI)) 1073 sk_rxfilter(sc_if); 1074 } else 1075 sk_init_locked(sc_if); 1076 } else { 1077 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) 1078 sk_stop(sc_if); 1079 } 1080 sc_if->sk_if_flags = if_getflags(ifp); 1081 SK_IF_UNLOCK(sc_if); 1082 break; 1083 case SIOCADDMULTI: 1084 case SIOCDELMULTI: 1085 SK_IF_LOCK(sc_if); 1086 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) 1087 sk_rxfilter(sc_if); 1088 SK_IF_UNLOCK(sc_if); 1089 break; 1090 case SIOCGIFMEDIA: 1091 case SIOCSIFMEDIA: 1092 mii = device_get_softc(sc_if->sk_miibus); 1093 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 1094 break; 1095 case SIOCSIFCAP: 1096 SK_IF_LOCK(sc_if); 1097 if (sc_if->sk_softc->sk_type == SK_GENESIS) { 1098 SK_IF_UNLOCK(sc_if); 1099 break; 1100 } 1101 mask = ifr->ifr_reqcap ^ if_getcapenable(ifp); 1102 if ((mask & IFCAP_TXCSUM) != 0 && 1103 (IFCAP_TXCSUM & if_getcapabilities(ifp)) != 0) { 1104 if_togglecapenable(ifp, IFCAP_TXCSUM); 1105 if ((if_getcapenable(ifp) & IFCAP_TXCSUM) != 0) 1106 if_sethwassistbits(ifp, SK_CSUM_FEATURES, 0); 1107 else 1108 if_sethwassistbits(ifp, 0, SK_CSUM_FEATURES); 1109 } 1110 if ((mask & IFCAP_RXCSUM) != 0 && 1111 (IFCAP_RXCSUM & if_getcapabilities(ifp)) != 0) 1112 if_togglecapenable(ifp, IFCAP_RXCSUM); 1113 SK_IF_UNLOCK(sc_if); 1114 break; 1115 default: 1116 error = ether_ioctl(ifp, command, data); 1117 break; 1118 } 1119 1120 return (error); 1121 } 1122 1123 /* 1124 * Probe for a SysKonnect GEnesis chip. Check the PCI vendor and device 1125 * IDs against our list and return a device name if we find a match. 1126 */ 1127 static int 1128 skc_probe(device_t dev) 1129 { 1130 const struct sk_type *t = sk_devs; 1131 1132 while(t->sk_name != NULL) { 1133 if ((pci_get_vendor(dev) == t->sk_vid) && 1134 (pci_get_device(dev) == t->sk_did)) { 1135 /* 1136 * Only attach to rev. 2 of the Linksys EG1032 adapter. 1137 * Rev. 3 is supported by re(4). 1138 */ 1139 if ((t->sk_vid == VENDORID_LINKSYS) && 1140 (t->sk_did == DEVICEID_LINKSYS_EG1032) && 1141 (pci_get_subdevice(dev) != 1142 SUBDEVICEID_LINKSYS_EG1032_REV2)) { 1143 t++; 1144 continue; 1145 } 1146 device_set_desc(dev, t->sk_name); 1147 return (BUS_PROBE_DEFAULT); 1148 } 1149 t++; 1150 } 1151 1152 return(ENXIO); 1153 } 1154 1155 /* 1156 * Force the GEnesis into reset, then bring it out of reset. 1157 */ 1158 static void 1159 sk_reset(struct sk_softc *sc) 1160 { 1161 1162 CSR_WRITE_2(sc, SK_CSR, SK_CSR_SW_RESET); 1163 CSR_WRITE_2(sc, SK_CSR, SK_CSR_MASTER_RESET); 1164 if (SK_YUKON_FAMILY(sc->sk_type)) 1165 CSR_WRITE_2(sc, SK_LINK_CTRL, SK_LINK_RESET_SET); 1166 1167 DELAY(1000); 1168 CSR_WRITE_2(sc, SK_CSR, SK_CSR_SW_UNRESET); 1169 DELAY(2); 1170 CSR_WRITE_2(sc, SK_CSR, SK_CSR_MASTER_UNRESET); 1171 if (SK_YUKON_FAMILY(sc->sk_type)) 1172 CSR_WRITE_2(sc, SK_LINK_CTRL, SK_LINK_RESET_CLEAR); 1173 1174 if (sc->sk_type == SK_GENESIS) { 1175 /* Configure packet arbiter */ 1176 sk_win_write_2(sc, SK_PKTARB_CTL, SK_PKTARBCTL_UNRESET); 1177 sk_win_write_2(sc, SK_RXPA1_TINIT, SK_PKTARB_TIMEOUT); 1178 sk_win_write_2(sc, SK_TXPA1_TINIT, SK_PKTARB_TIMEOUT); 1179 sk_win_write_2(sc, SK_RXPA2_TINIT, SK_PKTARB_TIMEOUT); 1180 sk_win_write_2(sc, SK_TXPA2_TINIT, SK_PKTARB_TIMEOUT); 1181 } 1182 1183 /* Enable RAM interface */ 1184 sk_win_write_4(sc, SK_RAMCTL, SK_RAMCTL_UNRESET); 1185 1186 /* 1187 * Configure interrupt moderation. The moderation timer 1188 * defers interrupts specified in the interrupt moderation 1189 * timer mask based on the timeout specified in the interrupt 1190 * moderation timer init register. Each bit in the timer 1191 * register represents one tick, so to specify a timeout in 1192 * microseconds, we have to multiply by the correct number of 1193 * ticks-per-microsecond. 1194 */ 1195 switch (sc->sk_type) { 1196 case SK_GENESIS: 1197 sc->sk_int_ticks = SK_IMTIMER_TICKS_GENESIS; 1198 break; 1199 default: 1200 sc->sk_int_ticks = SK_IMTIMER_TICKS_YUKON; 1201 break; 1202 } 1203 if (bootverbose) 1204 device_printf(sc->sk_dev, "interrupt moderation is %d us\n", 1205 sc->sk_int_mod); 1206 sk_win_write_4(sc, SK_IMTIMERINIT, SK_IM_USECS(sc->sk_int_mod, 1207 sc->sk_int_ticks)); 1208 sk_win_write_4(sc, SK_IMMR, SK_ISR_TX1_S_EOF|SK_ISR_TX2_S_EOF| 1209 SK_ISR_RX1_EOF|SK_ISR_RX2_EOF); 1210 sk_win_write_1(sc, SK_IMTIMERCTL, SK_IMCTL_START); 1211 1212 return; 1213 } 1214 1215 static int 1216 sk_probe(device_t dev) 1217 { 1218 struct sk_softc *sc; 1219 1220 sc = device_get_softc(device_get_parent(dev)); 1221 1222 /* 1223 * Not much to do here. We always know there will be 1224 * at least one XMAC present, and if there are two, 1225 * skc_attach() will create a second device instance 1226 * for us. 1227 */ 1228 switch (sc->sk_type) { 1229 case SK_GENESIS: 1230 device_set_desc(dev, "XaQti Corp. XMAC II"); 1231 break; 1232 case SK_YUKON: 1233 case SK_YUKON_LITE: 1234 case SK_YUKON_LP: 1235 device_set_desc(dev, "Marvell Semiconductor, Inc. Yukon"); 1236 break; 1237 } 1238 1239 return (BUS_PROBE_DEFAULT); 1240 } 1241 1242 /* 1243 * Each XMAC chip is attached as a separate logical IP interface. 1244 * Single port cards will have only one logical interface of course. 1245 */ 1246 static int 1247 sk_attach(device_t dev) 1248 { 1249 struct sk_softc *sc; 1250 struct sk_if_softc *sc_if; 1251 if_t ifp; 1252 u_int32_t r; 1253 int error, i, phy, port; 1254 u_char eaddr[6]; 1255 u_char inv_mac[] = {0, 0, 0, 0, 0, 0}; 1256 1257 if (dev == NULL) 1258 return(EINVAL); 1259 1260 error = 0; 1261 sc_if = device_get_softc(dev); 1262 sc = device_get_softc(device_get_parent(dev)); 1263 port = *(int *)device_get_ivars(dev); 1264 1265 sc_if->sk_if_dev = dev; 1266 sc_if->sk_port = port; 1267 sc_if->sk_softc = sc; 1268 sc->sk_if[port] = sc_if; 1269 if (port == SK_PORT_A) 1270 sc_if->sk_tx_bmu = SK_BMU_TXS_CSR0; 1271 if (port == SK_PORT_B) 1272 sc_if->sk_tx_bmu = SK_BMU_TXS_CSR1; 1273 1274 callout_init_mtx(&sc_if->sk_tick_ch, &sc_if->sk_softc->sk_mtx, 0); 1275 callout_init_mtx(&sc_if->sk_watchdog_ch, &sc_if->sk_softc->sk_mtx, 0); 1276 1277 if (sk_dma_alloc(sc_if) != 0) { 1278 error = ENOMEM; 1279 goto fail; 1280 } 1281 sk_dma_jumbo_alloc(sc_if); 1282 1283 ifp = sc_if->sk_ifp = if_alloc(IFT_ETHER); 1284 if_setsoftc(ifp, sc_if); 1285 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 1286 if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 1287 /* 1288 * SK_GENESIS has a bug in checksum offload - From linux. 1289 */ 1290 if (sc_if->sk_softc->sk_type != SK_GENESIS) { 1291 if_setcapabilities(ifp, IFCAP_TXCSUM | IFCAP_RXCSUM); 1292 if_sethwassist(ifp, 0); 1293 } else { 1294 if_setcapabilities(ifp, 0); 1295 if_sethwassist(ifp, 0); 1296 } 1297 if_setcapenable(ifp, if_getcapabilities(ifp)); 1298 /* 1299 * Some revision of Yukon controller generates corrupted 1300 * frame when TX checksum offloading is enabled. The 1301 * frame has a valid checksum value so payload might be 1302 * modified during TX checksum calculation. Disable TX 1303 * checksum offloading but give users chance to enable it 1304 * when they know their controller works without problems 1305 * with TX checksum offloading. 1306 */ 1307 if_setcapenablebit(ifp, 0, IFCAP_TXCSUM); 1308 if_setioctlfn(ifp, sk_ioctl); 1309 if_setstartfn(ifp, sk_start); 1310 if_setinitfn(ifp, sk_init); 1311 if_setsendqlen(ifp, SK_TX_RING_CNT - 1); 1312 if_setsendqready(ifp); 1313 1314 /* 1315 * Get station address for this interface. Note that 1316 * dual port cards actually come with three station 1317 * addresses: one for each port, plus an extra. The 1318 * extra one is used by the SysKonnect driver software 1319 * as a 'virtual' station address for when both ports 1320 * are operating in failover mode. Currently we don't 1321 * use this extra address. 1322 */ 1323 SK_IF_LOCK(sc_if); 1324 for (i = 0; i < ETHER_ADDR_LEN; i++) 1325 eaddr[i] = 1326 sk_win_read_1(sc, SK_MAC0_0 + (port * 8) + i); 1327 1328 /* Verify whether the station address is invalid or not. */ 1329 if (bcmp(eaddr, inv_mac, sizeof(inv_mac)) == 0) { 1330 device_printf(sc_if->sk_if_dev, 1331 "Generating random ethernet address\n"); 1332 r = arc4random(); 1333 /* 1334 * Set OUI to convenient locally assigned address. 'b' 1335 * is 0x62, which has the locally assigned bit set, and 1336 * the broadcast/multicast bit clear. 1337 */ 1338 eaddr[0] = 'b'; 1339 eaddr[1] = 's'; 1340 eaddr[2] = 'd'; 1341 eaddr[3] = (r >> 16) & 0xff; 1342 eaddr[4] = (r >> 8) & 0xff; 1343 eaddr[5] = (r >> 0) & 0xff; 1344 } 1345 /* 1346 * Set up RAM buffer addresses. The NIC will have a certain 1347 * amount of SRAM on it, somewhere between 512K and 2MB. We 1348 * need to divide this up a) between the transmitter and 1349 * receiver and b) between the two XMACs, if this is a 1350 * dual port NIC. Our algotithm is to divide up the memory 1351 * evenly so that everyone gets a fair share. 1352 * 1353 * Just to be contrary, Yukon2 appears to have separate memory 1354 * for each MAC. 1355 */ 1356 if (sk_win_read_1(sc, SK_CONFIG) & SK_CONFIG_SINGLEMAC) { 1357 u_int32_t chunk, val; 1358 1359 chunk = sc->sk_ramsize / 2; 1360 val = sc->sk_rboff / sizeof(u_int64_t); 1361 sc_if->sk_rx_ramstart = val; 1362 val += (chunk / sizeof(u_int64_t)); 1363 sc_if->sk_rx_ramend = val - 1; 1364 sc_if->sk_tx_ramstart = val; 1365 val += (chunk / sizeof(u_int64_t)); 1366 sc_if->sk_tx_ramend = val - 1; 1367 } else { 1368 u_int32_t chunk, val; 1369 1370 chunk = sc->sk_ramsize / 4; 1371 val = (sc->sk_rboff + (chunk * 2 * sc_if->sk_port)) / 1372 sizeof(u_int64_t); 1373 sc_if->sk_rx_ramstart = val; 1374 val += (chunk / sizeof(u_int64_t)); 1375 sc_if->sk_rx_ramend = val - 1; 1376 sc_if->sk_tx_ramstart = val; 1377 val += (chunk / sizeof(u_int64_t)); 1378 sc_if->sk_tx_ramend = val - 1; 1379 } 1380 1381 /* Read and save PHY type and set PHY address */ 1382 sc_if->sk_phytype = sk_win_read_1(sc, SK_EPROM1) & 0xF; 1383 if (!SK_YUKON_FAMILY(sc->sk_type)) { 1384 switch(sc_if->sk_phytype) { 1385 case SK_PHYTYPE_XMAC: 1386 sc_if->sk_phyaddr = SK_PHYADDR_XMAC; 1387 break; 1388 case SK_PHYTYPE_BCOM: 1389 sc_if->sk_phyaddr = SK_PHYADDR_BCOM; 1390 break; 1391 default: 1392 device_printf(sc->sk_dev, "unsupported PHY type: %d\n", 1393 sc_if->sk_phytype); 1394 error = ENODEV; 1395 SK_IF_UNLOCK(sc_if); 1396 goto fail; 1397 } 1398 } else { 1399 if (sc_if->sk_phytype < SK_PHYTYPE_MARV_COPPER && 1400 sc->sk_pmd != 'S') { 1401 /* not initialized, punt */ 1402 sc_if->sk_phytype = SK_PHYTYPE_MARV_COPPER; 1403 sc->sk_coppertype = 1; 1404 } 1405 1406 sc_if->sk_phyaddr = SK_PHYADDR_MARV; 1407 1408 if (!(sc->sk_coppertype)) 1409 sc_if->sk_phytype = SK_PHYTYPE_MARV_FIBER; 1410 } 1411 1412 /* 1413 * Call MI attach routine. Can't hold locks when calling into ether_*. 1414 */ 1415 SK_IF_UNLOCK(sc_if); 1416 ether_ifattach(ifp, eaddr); 1417 SK_IF_LOCK(sc_if); 1418 1419 /* 1420 * The hardware should be ready for VLAN_MTU by default: 1421 * XMAC II has 0x8100 in VLAN Tag Level 1 register initially; 1422 * YU_SMR_MFL_VLAN is set by this driver in Yukon. 1423 * 1424 */ 1425 if_setcapabilitiesbit(ifp, IFCAP_VLAN_MTU, 0); 1426 if_setcapenablebit(ifp, IFCAP_VLAN_MTU, 0); 1427 /* 1428 * Tell the upper layer(s) we support long frames. 1429 * Must appear after the call to ether_ifattach() because 1430 * ether_ifattach() sets ifi_hdrlen to the default value. 1431 */ 1432 if_setifheaderlen(ifp, sizeof(struct ether_vlan_header)); 1433 1434 /* 1435 * Do miibus setup. 1436 */ 1437 phy = MII_PHY_ANY; 1438 switch (sc->sk_type) { 1439 case SK_GENESIS: 1440 sk_init_xmac(sc_if); 1441 if (sc_if->sk_phytype == SK_PHYTYPE_XMAC) 1442 phy = 0; 1443 break; 1444 case SK_YUKON: 1445 case SK_YUKON_LITE: 1446 case SK_YUKON_LP: 1447 sk_init_yukon(sc_if); 1448 phy = 0; 1449 break; 1450 } 1451 1452 SK_IF_UNLOCK(sc_if); 1453 error = mii_attach(dev, &sc_if->sk_miibus, ifp, sk_ifmedia_upd, 1454 sk_ifmedia_sts, BMSR_DEFCAPMASK, phy, MII_OFFSET_ANY, 0); 1455 if (error != 0) { 1456 device_printf(sc_if->sk_if_dev, "attaching PHYs failed\n"); 1457 ether_ifdetach(ifp); 1458 goto fail; 1459 } 1460 1461 fail: 1462 if (error) { 1463 /* Access should be ok even though lock has been dropped */ 1464 sc->sk_if[port] = NULL; 1465 sk_detach(dev); 1466 } 1467 1468 return(error); 1469 } 1470 1471 /* 1472 * Attach the interface. Allocate softc structures, do ifmedia 1473 * setup and ethernet/BPF attach. 1474 */ 1475 static int 1476 skc_attach(device_t dev) 1477 { 1478 struct sk_softc *sc; 1479 int error = 0, *port; 1480 uint8_t skrs; 1481 const char *pname = NULL; 1482 char *revstr; 1483 1484 sc = device_get_softc(dev); 1485 sc->sk_dev = dev; 1486 1487 mtx_init(&sc->sk_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 1488 MTX_DEF); 1489 mtx_init(&sc->sk_mii_mtx, "sk_mii_mutex", NULL, MTX_DEF); 1490 /* 1491 * Map control/status registers. 1492 */ 1493 pci_enable_busmaster(dev); 1494 1495 /* Allocate resources */ 1496 #ifdef SK_USEIOSPACE 1497 sc->sk_res_spec = sk_res_spec_io; 1498 #else 1499 sc->sk_res_spec = sk_res_spec_mem; 1500 #endif 1501 error = bus_alloc_resources(dev, sc->sk_res_spec, sc->sk_res); 1502 if (error) { 1503 if (sc->sk_res_spec == sk_res_spec_mem) 1504 sc->sk_res_spec = sk_res_spec_io; 1505 else 1506 sc->sk_res_spec = sk_res_spec_mem; 1507 error = bus_alloc_resources(dev, sc->sk_res_spec, sc->sk_res); 1508 if (error) { 1509 device_printf(dev, "couldn't allocate %s resources\n", 1510 sc->sk_res_spec == sk_res_spec_mem ? "memory" : 1511 "I/O"); 1512 goto fail; 1513 } 1514 } 1515 1516 sc->sk_type = sk_win_read_1(sc, SK_CHIPVER); 1517 sc->sk_rev = (sk_win_read_1(sc, SK_CONFIG) >> 4) & 0xf; 1518 1519 /* Bail out if chip is not recognized. */ 1520 if (sc->sk_type != SK_GENESIS && !SK_YUKON_FAMILY(sc->sk_type)) { 1521 device_printf(dev, "unknown device: chipver=%02x, rev=%x\n", 1522 sc->sk_type, sc->sk_rev); 1523 error = ENXIO; 1524 goto fail; 1525 } 1526 1527 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 1528 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 1529 OID_AUTO, "int_mod", 1530 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 1531 &sc->sk_int_mod, 0, sysctl_hw_sk_int_mod, "I", 1532 "SK interrupt moderation"); 1533 1534 /* Pull in device tunables. */ 1535 sc->sk_int_mod = SK_IM_DEFAULT; 1536 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 1537 "int_mod", &sc->sk_int_mod); 1538 if (error == 0) { 1539 if (sc->sk_int_mod < SK_IM_MIN || 1540 sc->sk_int_mod > SK_IM_MAX) { 1541 device_printf(dev, "int_mod value out of range; " 1542 "using default: %d\n", SK_IM_DEFAULT); 1543 sc->sk_int_mod = SK_IM_DEFAULT; 1544 } 1545 } 1546 1547 /* Reset the adapter. */ 1548 sk_reset(sc); 1549 1550 skrs = sk_win_read_1(sc, SK_EPROM0); 1551 if (sc->sk_type == SK_GENESIS) { 1552 /* Read and save RAM size and RAMbuffer offset */ 1553 switch(skrs) { 1554 case SK_RAMSIZE_512K_64: 1555 sc->sk_ramsize = 0x80000; 1556 sc->sk_rboff = SK_RBOFF_0; 1557 break; 1558 case SK_RAMSIZE_1024K_64: 1559 sc->sk_ramsize = 0x100000; 1560 sc->sk_rboff = SK_RBOFF_80000; 1561 break; 1562 case SK_RAMSIZE_1024K_128: 1563 sc->sk_ramsize = 0x100000; 1564 sc->sk_rboff = SK_RBOFF_0; 1565 break; 1566 case SK_RAMSIZE_2048K_128: 1567 sc->sk_ramsize = 0x200000; 1568 sc->sk_rboff = SK_RBOFF_0; 1569 break; 1570 default: 1571 device_printf(dev, "unknown ram size: %d\n", skrs); 1572 error = ENXIO; 1573 goto fail; 1574 } 1575 } else { /* SK_YUKON_FAMILY */ 1576 if (skrs == 0x00) 1577 sc->sk_ramsize = 0x20000; 1578 else 1579 sc->sk_ramsize = skrs * (1<<12); 1580 sc->sk_rboff = SK_RBOFF_0; 1581 } 1582 1583 /* Read and save physical media type */ 1584 sc->sk_pmd = sk_win_read_1(sc, SK_PMDTYPE); 1585 1586 if (sc->sk_pmd == 'T' || sc->sk_pmd == '1') 1587 sc->sk_coppertype = 1; 1588 else 1589 sc->sk_coppertype = 0; 1590 1591 /* Determine whether to name it with VPD PN or just make it up. 1592 * Marvell Yukon VPD PN seems to freqently be bogus. */ 1593 switch (pci_get_device(dev)) { 1594 case DEVICEID_SK_V1: 1595 case DEVICEID_BELKIN_5005: 1596 case DEVICEID_3COM_3C940: 1597 case DEVICEID_LINKSYS_EG1032: 1598 case DEVICEID_DLINK_DGE530T_A1: 1599 case DEVICEID_DLINK_DGE530T_B1: 1600 /* Stay with VPD PN. */ 1601 (void) pci_get_vpd_ident(dev, &pname); 1602 break; 1603 case DEVICEID_SK_V2: 1604 /* YUKON VPD PN might bear no resemblance to reality. */ 1605 switch (sc->sk_type) { 1606 case SK_GENESIS: 1607 /* Stay with VPD PN. */ 1608 (void) pci_get_vpd_ident(dev, &pname); 1609 break; 1610 case SK_YUKON: 1611 pname = "Marvell Yukon Gigabit Ethernet"; 1612 break; 1613 case SK_YUKON_LITE: 1614 pname = "Marvell Yukon Lite Gigabit Ethernet"; 1615 break; 1616 case SK_YUKON_LP: 1617 pname = "Marvell Yukon LP Gigabit Ethernet"; 1618 break; 1619 default: 1620 pname = "Marvell Yukon (Unknown) Gigabit Ethernet"; 1621 break; 1622 } 1623 1624 /* Yukon Lite Rev. A0 needs special test. */ 1625 if (sc->sk_type == SK_YUKON || sc->sk_type == SK_YUKON_LP) { 1626 u_int32_t far; 1627 u_int8_t testbyte; 1628 1629 /* Save flash address register before testing. */ 1630 far = sk_win_read_4(sc, SK_EP_ADDR); 1631 1632 sk_win_write_1(sc, SK_EP_ADDR+0x03, 0xff); 1633 testbyte = sk_win_read_1(sc, SK_EP_ADDR+0x03); 1634 1635 if (testbyte != 0x00) { 1636 /* Yukon Lite Rev. A0 detected. */ 1637 sc->sk_type = SK_YUKON_LITE; 1638 sc->sk_rev = SK_YUKON_LITE_REV_A0; 1639 /* Restore flash address register. */ 1640 sk_win_write_4(sc, SK_EP_ADDR, far); 1641 } 1642 } 1643 break; 1644 default: 1645 device_printf(dev, "unknown device: vendor=%04x, device=%04x, " 1646 "chipver=%02x, rev=%x\n", 1647 pci_get_vendor(dev), pci_get_device(dev), 1648 sc->sk_type, sc->sk_rev); 1649 error = ENXIO; 1650 goto fail; 1651 } 1652 1653 if (sc->sk_type == SK_YUKON_LITE) { 1654 switch (sc->sk_rev) { 1655 case SK_YUKON_LITE_REV_A0: 1656 revstr = "A0"; 1657 break; 1658 case SK_YUKON_LITE_REV_A1: 1659 revstr = "A1"; 1660 break; 1661 case SK_YUKON_LITE_REV_A3: 1662 revstr = "A3"; 1663 break; 1664 default: 1665 revstr = ""; 1666 break; 1667 } 1668 } else { 1669 revstr = ""; 1670 } 1671 1672 /* Announce the product name and more VPD data if there. */ 1673 if (pname != NULL) 1674 device_printf(dev, "%s rev. %s(0x%x)\n", 1675 pname, revstr, sc->sk_rev); 1676 1677 if (bootverbose) { 1678 device_printf(dev, "chip ver = 0x%02x\n", sc->sk_type); 1679 device_printf(dev, "chip rev = 0x%02x\n", sc->sk_rev); 1680 device_printf(dev, "SK_EPROM0 = 0x%02x\n", skrs); 1681 device_printf(dev, "SRAM size = 0x%06x\n", sc->sk_ramsize); 1682 } 1683 1684 sc->sk_devs[SK_PORT_A] = device_add_child(dev, "sk", DEVICE_UNIT_ANY); 1685 if (sc->sk_devs[SK_PORT_A] == NULL) { 1686 device_printf(dev, "failed to add child for PORT_A\n"); 1687 error = ENXIO; 1688 goto fail; 1689 } 1690 port = malloc(sizeof(int), M_DEVBUF, M_NOWAIT); 1691 if (port == NULL) { 1692 device_printf(dev, "failed to allocate memory for " 1693 "ivars of PORT_A\n"); 1694 error = ENXIO; 1695 goto fail; 1696 } 1697 *port = SK_PORT_A; 1698 device_set_ivars(sc->sk_devs[SK_PORT_A], port); 1699 1700 if (!(sk_win_read_1(sc, SK_CONFIG) & SK_CONFIG_SINGLEMAC)) { 1701 sc->sk_devs[SK_PORT_B] = device_add_child(dev, "sk", DEVICE_UNIT_ANY); 1702 if (sc->sk_devs[SK_PORT_B] == NULL) { 1703 device_printf(dev, "failed to add child for PORT_B\n"); 1704 error = ENXIO; 1705 goto fail; 1706 } 1707 port = malloc(sizeof(int), M_DEVBUF, M_NOWAIT); 1708 if (port == NULL) { 1709 device_printf(dev, "failed to allocate memory for " 1710 "ivars of PORT_B\n"); 1711 error = ENXIO; 1712 goto fail; 1713 } 1714 *port = SK_PORT_B; 1715 device_set_ivars(sc->sk_devs[SK_PORT_B], port); 1716 } 1717 1718 /* Turn on the 'driver is loaded' LED. */ 1719 CSR_WRITE_2(sc, SK_LED, SK_LED_GREEN_ON); 1720 1721 bus_attach_children(dev); 1722 1723 /* Hook interrupt last to avoid having to lock softc */ 1724 error = bus_setup_intr(dev, sc->sk_res[1], INTR_TYPE_NET|INTR_MPSAFE, 1725 NULL, sk_intr, sc, &sc->sk_intrhand); 1726 1727 if (error) { 1728 device_printf(dev, "couldn't set up irq\n"); 1729 goto fail; 1730 } 1731 1732 fail: 1733 if (error) 1734 skc_detach(dev); 1735 1736 return(error); 1737 } 1738 1739 static void 1740 skc_child_deleted(device_t dev, device_t child) 1741 { 1742 free(device_get_ivars(child), M_DEVBUF); 1743 } 1744 1745 /* 1746 * Shutdown hardware and free up resources. This can be called any 1747 * time after the mutex has been initialized. It is called in both 1748 * the error case in attach and the normal detach case so it needs 1749 * to be careful about only freeing resources that have actually been 1750 * allocated. 1751 */ 1752 static int 1753 sk_detach(device_t dev) 1754 { 1755 struct sk_if_softc *sc_if; 1756 if_t ifp; 1757 1758 sc_if = device_get_softc(dev); 1759 KASSERT(mtx_initialized(&sc_if->sk_softc->sk_mtx), 1760 ("sk mutex not initialized in sk_detach")); 1761 SK_IF_LOCK(sc_if); 1762 1763 ifp = sc_if->sk_ifp; 1764 /* These should only be active if attach_xmac succeeded */ 1765 if (device_is_attached(dev)) { 1766 sk_stop(sc_if); 1767 /* Can't hold locks while calling detach */ 1768 SK_IF_UNLOCK(sc_if); 1769 callout_drain(&sc_if->sk_tick_ch); 1770 callout_drain(&sc_if->sk_watchdog_ch); 1771 ether_ifdetach(ifp); 1772 SK_IF_LOCK(sc_if); 1773 } 1774 bus_generic_detach(dev); 1775 sk_dma_jumbo_free(sc_if); 1776 sk_dma_free(sc_if); 1777 SK_IF_UNLOCK(sc_if); 1778 if (ifp) 1779 if_free(ifp); 1780 1781 return(0); 1782 } 1783 1784 static int 1785 skc_detach(device_t dev) 1786 { 1787 struct sk_softc *sc; 1788 1789 sc = device_get_softc(dev); 1790 KASSERT(mtx_initialized(&sc->sk_mtx), ("sk mutex not initialized")); 1791 1792 bus_generic_detach(dev); 1793 1794 if (sc->sk_intrhand) 1795 bus_teardown_intr(dev, sc->sk_res[1], sc->sk_intrhand); 1796 bus_release_resources(dev, sc->sk_res_spec, sc->sk_res); 1797 1798 mtx_destroy(&sc->sk_mii_mtx); 1799 mtx_destroy(&sc->sk_mtx); 1800 1801 return(0); 1802 } 1803 1804 static bus_dma_tag_t 1805 skc_get_dma_tag(device_t bus, device_t child __unused) 1806 { 1807 1808 return (bus_get_dma_tag(bus)); 1809 } 1810 1811 struct sk_dmamap_arg { 1812 bus_addr_t sk_busaddr; 1813 }; 1814 1815 static void 1816 sk_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1817 { 1818 struct sk_dmamap_arg *ctx; 1819 1820 if (error != 0) 1821 return; 1822 1823 ctx = arg; 1824 ctx->sk_busaddr = segs[0].ds_addr; 1825 } 1826 1827 /* 1828 * Allocate jumbo buffer storage. The SysKonnect adapters support 1829 * "jumbograms" (9K frames), although SysKonnect doesn't currently 1830 * use them in their drivers. In order for us to use them, we need 1831 * large 9K receive buffers, however standard mbuf clusters are only 1832 * 2048 bytes in size. Consequently, we need to allocate and manage 1833 * our own jumbo buffer pool. Fortunately, this does not require an 1834 * excessive amount of additional code. 1835 */ 1836 static int 1837 sk_dma_alloc(struct sk_if_softc *sc_if) 1838 { 1839 struct sk_dmamap_arg ctx; 1840 struct sk_txdesc *txd; 1841 struct sk_rxdesc *rxd; 1842 int error, i; 1843 1844 /* create parent tag */ 1845 /* 1846 * XXX 1847 * This driver should use BUS_SPACE_MAXADDR for lowaddr argument 1848 * in bus_dma_tag_create(9) as the NIC would support DAC mode. 1849 * However bz@ reported that it does not work on amd64 with > 4GB 1850 * RAM. Until we have more clues of the breakage, disable DAC mode 1851 * by limiting DMA address to be in 32bit address space. 1852 */ 1853 error = bus_dma_tag_create( 1854 bus_get_dma_tag(sc_if->sk_if_dev),/* parent */ 1855 1, 0, /* algnmnt, boundary */ 1856 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1857 BUS_SPACE_MAXADDR, /* highaddr */ 1858 NULL, NULL, /* filter, filterarg */ 1859 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 1860 0, /* nsegments */ 1861 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1862 0, /* flags */ 1863 NULL, NULL, /* lockfunc, lockarg */ 1864 &sc_if->sk_cdata.sk_parent_tag); 1865 if (error != 0) { 1866 device_printf(sc_if->sk_if_dev, 1867 "failed to create parent DMA tag\n"); 1868 goto fail; 1869 } 1870 1871 /* create tag for Tx ring */ 1872 error = bus_dma_tag_create(sc_if->sk_cdata.sk_parent_tag,/* parent */ 1873 SK_RING_ALIGN, 0, /* algnmnt, boundary */ 1874 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1875 BUS_SPACE_MAXADDR, /* highaddr */ 1876 NULL, NULL, /* filter, filterarg */ 1877 SK_TX_RING_SZ, /* maxsize */ 1878 1, /* nsegments */ 1879 SK_TX_RING_SZ, /* maxsegsize */ 1880 0, /* flags */ 1881 NULL, NULL, /* lockfunc, lockarg */ 1882 &sc_if->sk_cdata.sk_tx_ring_tag); 1883 if (error != 0) { 1884 device_printf(sc_if->sk_if_dev, 1885 "failed to allocate Tx ring DMA tag\n"); 1886 goto fail; 1887 } 1888 1889 /* create tag for Rx ring */ 1890 error = bus_dma_tag_create(sc_if->sk_cdata.sk_parent_tag,/* parent */ 1891 SK_RING_ALIGN, 0, /* algnmnt, boundary */ 1892 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 1893 BUS_SPACE_MAXADDR, /* highaddr */ 1894 NULL, NULL, /* filter, filterarg */ 1895 SK_RX_RING_SZ, /* maxsize */ 1896 1, /* nsegments */ 1897 SK_RX_RING_SZ, /* maxsegsize */ 1898 0, /* flags */ 1899 NULL, NULL, /* lockfunc, lockarg */ 1900 &sc_if->sk_cdata.sk_rx_ring_tag); 1901 if (error != 0) { 1902 device_printf(sc_if->sk_if_dev, 1903 "failed to allocate Rx ring DMA tag\n"); 1904 goto fail; 1905 } 1906 1907 /* create tag for Tx buffers */ 1908 error = bus_dma_tag_create(sc_if->sk_cdata.sk_parent_tag,/* parent */ 1909 1, 0, /* algnmnt, boundary */ 1910 BUS_SPACE_MAXADDR, /* lowaddr */ 1911 BUS_SPACE_MAXADDR, /* highaddr */ 1912 NULL, NULL, /* filter, filterarg */ 1913 MCLBYTES * SK_MAXTXSEGS, /* maxsize */ 1914 SK_MAXTXSEGS, /* nsegments */ 1915 MCLBYTES, /* maxsegsize */ 1916 0, /* flags */ 1917 NULL, NULL, /* lockfunc, lockarg */ 1918 &sc_if->sk_cdata.sk_tx_tag); 1919 if (error != 0) { 1920 device_printf(sc_if->sk_if_dev, 1921 "failed to allocate Tx DMA tag\n"); 1922 goto fail; 1923 } 1924 1925 /* create tag for Rx buffers */ 1926 error = bus_dma_tag_create(sc_if->sk_cdata.sk_parent_tag,/* parent */ 1927 1, 0, /* algnmnt, boundary */ 1928 BUS_SPACE_MAXADDR, /* lowaddr */ 1929 BUS_SPACE_MAXADDR, /* highaddr */ 1930 NULL, NULL, /* filter, filterarg */ 1931 MCLBYTES, /* maxsize */ 1932 1, /* nsegments */ 1933 MCLBYTES, /* maxsegsize */ 1934 0, /* flags */ 1935 NULL, NULL, /* lockfunc, lockarg */ 1936 &sc_if->sk_cdata.sk_rx_tag); 1937 if (error != 0) { 1938 device_printf(sc_if->sk_if_dev, 1939 "failed to allocate Rx DMA tag\n"); 1940 goto fail; 1941 } 1942 1943 /* allocate DMA'able memory and load the DMA map for Tx ring */ 1944 error = bus_dmamem_alloc(sc_if->sk_cdata.sk_tx_ring_tag, 1945 (void **)&sc_if->sk_rdata.sk_tx_ring, BUS_DMA_NOWAIT | 1946 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc_if->sk_cdata.sk_tx_ring_map); 1947 if (error != 0) { 1948 device_printf(sc_if->sk_if_dev, 1949 "failed to allocate DMA'able memory for Tx ring\n"); 1950 goto fail; 1951 } 1952 1953 ctx.sk_busaddr = 0; 1954 error = bus_dmamap_load(sc_if->sk_cdata.sk_tx_ring_tag, 1955 sc_if->sk_cdata.sk_tx_ring_map, sc_if->sk_rdata.sk_tx_ring, 1956 SK_TX_RING_SZ, sk_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 1957 if (error != 0) { 1958 device_printf(sc_if->sk_if_dev, 1959 "failed to load DMA'able memory for Tx ring\n"); 1960 goto fail; 1961 } 1962 sc_if->sk_rdata.sk_tx_ring_paddr = ctx.sk_busaddr; 1963 1964 /* allocate DMA'able memory and load the DMA map for Rx ring */ 1965 error = bus_dmamem_alloc(sc_if->sk_cdata.sk_rx_ring_tag, 1966 (void **)&sc_if->sk_rdata.sk_rx_ring, BUS_DMA_NOWAIT | 1967 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc_if->sk_cdata.sk_rx_ring_map); 1968 if (error != 0) { 1969 device_printf(sc_if->sk_if_dev, 1970 "failed to allocate DMA'able memory for Rx ring\n"); 1971 goto fail; 1972 } 1973 1974 ctx.sk_busaddr = 0; 1975 error = bus_dmamap_load(sc_if->sk_cdata.sk_rx_ring_tag, 1976 sc_if->sk_cdata.sk_rx_ring_map, sc_if->sk_rdata.sk_rx_ring, 1977 SK_RX_RING_SZ, sk_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 1978 if (error != 0) { 1979 device_printf(sc_if->sk_if_dev, 1980 "failed to load DMA'able memory for Rx ring\n"); 1981 goto fail; 1982 } 1983 sc_if->sk_rdata.sk_rx_ring_paddr = ctx.sk_busaddr; 1984 1985 /* create DMA maps for Tx buffers */ 1986 for (i = 0; i < SK_TX_RING_CNT; i++) { 1987 txd = &sc_if->sk_cdata.sk_txdesc[i]; 1988 txd->tx_m = NULL; 1989 txd->tx_dmamap = NULL; 1990 error = bus_dmamap_create(sc_if->sk_cdata.sk_tx_tag, 0, 1991 &txd->tx_dmamap); 1992 if (error != 0) { 1993 device_printf(sc_if->sk_if_dev, 1994 "failed to create Tx dmamap\n"); 1995 goto fail; 1996 } 1997 } 1998 1999 /* create DMA maps for Rx buffers */ 2000 if ((error = bus_dmamap_create(sc_if->sk_cdata.sk_rx_tag, 0, 2001 &sc_if->sk_cdata.sk_rx_sparemap)) != 0) { 2002 device_printf(sc_if->sk_if_dev, 2003 "failed to create spare Rx dmamap\n"); 2004 goto fail; 2005 } 2006 for (i = 0; i < SK_RX_RING_CNT; i++) { 2007 rxd = &sc_if->sk_cdata.sk_rxdesc[i]; 2008 rxd->rx_m = NULL; 2009 rxd->rx_dmamap = NULL; 2010 error = bus_dmamap_create(sc_if->sk_cdata.sk_rx_tag, 0, 2011 &rxd->rx_dmamap); 2012 if (error != 0) { 2013 device_printf(sc_if->sk_if_dev, 2014 "failed to create Rx dmamap\n"); 2015 goto fail; 2016 } 2017 } 2018 2019 fail: 2020 return (error); 2021 } 2022 2023 static int 2024 sk_dma_jumbo_alloc(struct sk_if_softc *sc_if) 2025 { 2026 struct sk_dmamap_arg ctx; 2027 struct sk_rxdesc *jrxd; 2028 int error, i; 2029 2030 if (jumbo_disable != 0) { 2031 device_printf(sc_if->sk_if_dev, "disabling jumbo frame support\n"); 2032 sc_if->sk_jumbo_disable = 1; 2033 return (0); 2034 } 2035 /* create tag for jumbo Rx ring */ 2036 error = bus_dma_tag_create(sc_if->sk_cdata.sk_parent_tag,/* parent */ 2037 SK_RING_ALIGN, 0, /* algnmnt, boundary */ 2038 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 2039 BUS_SPACE_MAXADDR, /* highaddr */ 2040 NULL, NULL, /* filter, filterarg */ 2041 SK_JUMBO_RX_RING_SZ, /* maxsize */ 2042 1, /* nsegments */ 2043 SK_JUMBO_RX_RING_SZ, /* maxsegsize */ 2044 0, /* flags */ 2045 NULL, NULL, /* lockfunc, lockarg */ 2046 &sc_if->sk_cdata.sk_jumbo_rx_ring_tag); 2047 if (error != 0) { 2048 device_printf(sc_if->sk_if_dev, 2049 "failed to allocate jumbo Rx ring DMA tag\n"); 2050 goto jumbo_fail; 2051 } 2052 2053 /* create tag for jumbo Rx buffers */ 2054 error = bus_dma_tag_create(sc_if->sk_cdata.sk_parent_tag,/* parent */ 2055 1, 0, /* algnmnt, boundary */ 2056 BUS_SPACE_MAXADDR, /* lowaddr */ 2057 BUS_SPACE_MAXADDR, /* highaddr */ 2058 NULL, NULL, /* filter, filterarg */ 2059 MJUM9BYTES, /* maxsize */ 2060 1, /* nsegments */ 2061 MJUM9BYTES, /* maxsegsize */ 2062 0, /* flags */ 2063 NULL, NULL, /* lockfunc, lockarg */ 2064 &sc_if->sk_cdata.sk_jumbo_rx_tag); 2065 if (error != 0) { 2066 device_printf(sc_if->sk_if_dev, 2067 "failed to allocate jumbo Rx DMA tag\n"); 2068 goto jumbo_fail; 2069 } 2070 2071 /* allocate DMA'able memory and load the DMA map for jumbo Rx ring */ 2072 error = bus_dmamem_alloc(sc_if->sk_cdata.sk_jumbo_rx_ring_tag, 2073 (void **)&sc_if->sk_rdata.sk_jumbo_rx_ring, BUS_DMA_NOWAIT | 2074 BUS_DMA_COHERENT | BUS_DMA_ZERO, 2075 &sc_if->sk_cdata.sk_jumbo_rx_ring_map); 2076 if (error != 0) { 2077 device_printf(sc_if->sk_if_dev, 2078 "failed to allocate DMA'able memory for jumbo Rx ring\n"); 2079 goto jumbo_fail; 2080 } 2081 2082 ctx.sk_busaddr = 0; 2083 error = bus_dmamap_load(sc_if->sk_cdata.sk_jumbo_rx_ring_tag, 2084 sc_if->sk_cdata.sk_jumbo_rx_ring_map, 2085 sc_if->sk_rdata.sk_jumbo_rx_ring, SK_JUMBO_RX_RING_SZ, sk_dmamap_cb, 2086 &ctx, BUS_DMA_NOWAIT); 2087 if (error != 0) { 2088 device_printf(sc_if->sk_if_dev, 2089 "failed to load DMA'able memory for jumbo Rx ring\n"); 2090 goto jumbo_fail; 2091 } 2092 sc_if->sk_rdata.sk_jumbo_rx_ring_paddr = ctx.sk_busaddr; 2093 2094 /* create DMA maps for jumbo Rx buffers */ 2095 if ((error = bus_dmamap_create(sc_if->sk_cdata.sk_jumbo_rx_tag, 0, 2096 &sc_if->sk_cdata.sk_jumbo_rx_sparemap)) != 0) { 2097 device_printf(sc_if->sk_if_dev, 2098 "failed to create spare jumbo Rx dmamap\n"); 2099 goto jumbo_fail; 2100 } 2101 for (i = 0; i < SK_JUMBO_RX_RING_CNT; i++) { 2102 jrxd = &sc_if->sk_cdata.sk_jumbo_rxdesc[i]; 2103 jrxd->rx_m = NULL; 2104 jrxd->rx_dmamap = NULL; 2105 error = bus_dmamap_create(sc_if->sk_cdata.sk_jumbo_rx_tag, 0, 2106 &jrxd->rx_dmamap); 2107 if (error != 0) { 2108 device_printf(sc_if->sk_if_dev, 2109 "failed to create jumbo Rx dmamap\n"); 2110 goto jumbo_fail; 2111 } 2112 } 2113 2114 return (0); 2115 2116 jumbo_fail: 2117 sk_dma_jumbo_free(sc_if); 2118 device_printf(sc_if->sk_if_dev, "disabling jumbo frame support due to " 2119 "resource shortage\n"); 2120 sc_if->sk_jumbo_disable = 1; 2121 return (0); 2122 } 2123 2124 static void 2125 sk_dma_free(struct sk_if_softc *sc_if) 2126 { 2127 struct sk_txdesc *txd; 2128 struct sk_rxdesc *rxd; 2129 int i; 2130 2131 /* Tx ring */ 2132 if (sc_if->sk_cdata.sk_tx_ring_tag) { 2133 if (sc_if->sk_rdata.sk_tx_ring_paddr) 2134 bus_dmamap_unload(sc_if->sk_cdata.sk_tx_ring_tag, 2135 sc_if->sk_cdata.sk_tx_ring_map); 2136 if (sc_if->sk_rdata.sk_tx_ring) 2137 bus_dmamem_free(sc_if->sk_cdata.sk_tx_ring_tag, 2138 sc_if->sk_rdata.sk_tx_ring, 2139 sc_if->sk_cdata.sk_tx_ring_map); 2140 sc_if->sk_rdata.sk_tx_ring = NULL; 2141 sc_if->sk_rdata.sk_tx_ring_paddr = 0; 2142 bus_dma_tag_destroy(sc_if->sk_cdata.sk_tx_ring_tag); 2143 sc_if->sk_cdata.sk_tx_ring_tag = NULL; 2144 } 2145 /* Rx ring */ 2146 if (sc_if->sk_cdata.sk_rx_ring_tag) { 2147 if (sc_if->sk_rdata.sk_rx_ring_paddr) 2148 bus_dmamap_unload(sc_if->sk_cdata.sk_rx_ring_tag, 2149 sc_if->sk_cdata.sk_rx_ring_map); 2150 if (sc_if->sk_rdata.sk_rx_ring) 2151 bus_dmamem_free(sc_if->sk_cdata.sk_rx_ring_tag, 2152 sc_if->sk_rdata.sk_rx_ring, 2153 sc_if->sk_cdata.sk_rx_ring_map); 2154 sc_if->sk_rdata.sk_rx_ring = NULL; 2155 sc_if->sk_rdata.sk_rx_ring_paddr = 0; 2156 bus_dma_tag_destroy(sc_if->sk_cdata.sk_rx_ring_tag); 2157 sc_if->sk_cdata.sk_rx_ring_tag = NULL; 2158 } 2159 /* Tx buffers */ 2160 if (sc_if->sk_cdata.sk_tx_tag) { 2161 for (i = 0; i < SK_TX_RING_CNT; i++) { 2162 txd = &sc_if->sk_cdata.sk_txdesc[i]; 2163 if (txd->tx_dmamap) { 2164 bus_dmamap_destroy(sc_if->sk_cdata.sk_tx_tag, 2165 txd->tx_dmamap); 2166 txd->tx_dmamap = NULL; 2167 } 2168 } 2169 bus_dma_tag_destroy(sc_if->sk_cdata.sk_tx_tag); 2170 sc_if->sk_cdata.sk_tx_tag = NULL; 2171 } 2172 /* Rx buffers */ 2173 if (sc_if->sk_cdata.sk_rx_tag) { 2174 for (i = 0; i < SK_RX_RING_CNT; i++) { 2175 rxd = &sc_if->sk_cdata.sk_rxdesc[i]; 2176 if (rxd->rx_dmamap) { 2177 bus_dmamap_destroy(sc_if->sk_cdata.sk_rx_tag, 2178 rxd->rx_dmamap); 2179 rxd->rx_dmamap = NULL; 2180 } 2181 } 2182 if (sc_if->sk_cdata.sk_rx_sparemap) { 2183 bus_dmamap_destroy(sc_if->sk_cdata.sk_rx_tag, 2184 sc_if->sk_cdata.sk_rx_sparemap); 2185 sc_if->sk_cdata.sk_rx_sparemap = NULL; 2186 } 2187 bus_dma_tag_destroy(sc_if->sk_cdata.sk_rx_tag); 2188 sc_if->sk_cdata.sk_rx_tag = NULL; 2189 } 2190 2191 if (sc_if->sk_cdata.sk_parent_tag) { 2192 bus_dma_tag_destroy(sc_if->sk_cdata.sk_parent_tag); 2193 sc_if->sk_cdata.sk_parent_tag = NULL; 2194 } 2195 } 2196 2197 static void 2198 sk_dma_jumbo_free(struct sk_if_softc *sc_if) 2199 { 2200 struct sk_rxdesc *jrxd; 2201 int i; 2202 2203 /* jumbo Rx ring */ 2204 if (sc_if->sk_cdata.sk_jumbo_rx_ring_tag) { 2205 if (sc_if->sk_rdata.sk_jumbo_rx_ring_paddr) 2206 bus_dmamap_unload(sc_if->sk_cdata.sk_jumbo_rx_ring_tag, 2207 sc_if->sk_cdata.sk_jumbo_rx_ring_map); 2208 if (sc_if->sk_rdata.sk_jumbo_rx_ring) 2209 bus_dmamem_free(sc_if->sk_cdata.sk_jumbo_rx_ring_tag, 2210 sc_if->sk_rdata.sk_jumbo_rx_ring, 2211 sc_if->sk_cdata.sk_jumbo_rx_ring_map); 2212 sc_if->sk_rdata.sk_jumbo_rx_ring = NULL; 2213 sc_if->sk_rdata.sk_jumbo_rx_ring_paddr = 0; 2214 bus_dma_tag_destroy(sc_if->sk_cdata.sk_jumbo_rx_ring_tag); 2215 sc_if->sk_cdata.sk_jumbo_rx_ring_tag = NULL; 2216 } 2217 2218 /* jumbo Rx buffers */ 2219 if (sc_if->sk_cdata.sk_jumbo_rx_tag) { 2220 for (i = 0; i < SK_JUMBO_RX_RING_CNT; i++) { 2221 jrxd = &sc_if->sk_cdata.sk_jumbo_rxdesc[i]; 2222 if (jrxd->rx_dmamap) { 2223 bus_dmamap_destroy( 2224 sc_if->sk_cdata.sk_jumbo_rx_tag, 2225 jrxd->rx_dmamap); 2226 jrxd->rx_dmamap = NULL; 2227 } 2228 } 2229 if (sc_if->sk_cdata.sk_jumbo_rx_sparemap) { 2230 bus_dmamap_destroy(sc_if->sk_cdata.sk_jumbo_rx_tag, 2231 sc_if->sk_cdata.sk_jumbo_rx_sparemap); 2232 sc_if->sk_cdata.sk_jumbo_rx_sparemap = NULL; 2233 } 2234 bus_dma_tag_destroy(sc_if->sk_cdata.sk_jumbo_rx_tag); 2235 sc_if->sk_cdata.sk_jumbo_rx_tag = NULL; 2236 } 2237 } 2238 2239 static void 2240 sk_txcksum(if_t ifp, struct mbuf *m, struct sk_tx_desc *f) 2241 { 2242 struct ip *ip; 2243 u_int16_t offset; 2244 u_int8_t *p; 2245 2246 offset = sizeof(struct ip) + ETHER_HDR_LEN; 2247 for(; m && m->m_len == 0; m = m->m_next) 2248 ; 2249 if (m == NULL || m->m_len < ETHER_HDR_LEN) { 2250 if_printf(ifp, "%s: m_len < ETHER_HDR_LEN\n", __func__); 2251 /* checksum may be corrupted */ 2252 goto sendit; 2253 } 2254 if (m->m_len < ETHER_HDR_LEN + sizeof(u_int32_t)) { 2255 if (m->m_len != ETHER_HDR_LEN) { 2256 if_printf(ifp, "%s: m_len != ETHER_HDR_LEN\n", 2257 __func__); 2258 /* checksum may be corrupted */ 2259 goto sendit; 2260 } 2261 for(m = m->m_next; m && m->m_len == 0; m = m->m_next) 2262 ; 2263 if (m == NULL) { 2264 offset = sizeof(struct ip) + ETHER_HDR_LEN; 2265 /* checksum may be corrupted */ 2266 goto sendit; 2267 } 2268 ip = mtod(m, struct ip *); 2269 } else { 2270 p = mtod(m, u_int8_t *); 2271 p += ETHER_HDR_LEN; 2272 ip = (struct ip *)p; 2273 } 2274 offset = (ip->ip_hl << 2) + ETHER_HDR_LEN; 2275 2276 sendit: 2277 f->sk_csum_startval = 0; 2278 f->sk_csum_start = htole32(((offset + m->m_pkthdr.csum_data) & 0xffff) | 2279 (offset << 16)); 2280 } 2281 2282 static int 2283 sk_encap(struct sk_if_softc *sc_if, struct mbuf **m_head) 2284 { 2285 struct sk_txdesc *txd; 2286 struct sk_tx_desc *f = NULL; 2287 struct mbuf *m; 2288 bus_dma_segment_t txsegs[SK_MAXTXSEGS]; 2289 u_int32_t cflags, frag, si, sk_ctl; 2290 int error, i, nseg; 2291 2292 SK_IF_LOCK_ASSERT(sc_if); 2293 2294 if ((txd = STAILQ_FIRST(&sc_if->sk_cdata.sk_txfreeq)) == NULL) 2295 return (ENOBUFS); 2296 2297 error = bus_dmamap_load_mbuf_sg(sc_if->sk_cdata.sk_tx_tag, 2298 txd->tx_dmamap, *m_head, txsegs, &nseg, 0); 2299 if (error == EFBIG) { 2300 m = m_defrag(*m_head, M_NOWAIT); 2301 if (m == NULL) { 2302 m_freem(*m_head); 2303 *m_head = NULL; 2304 return (ENOMEM); 2305 } 2306 *m_head = m; 2307 error = bus_dmamap_load_mbuf_sg(sc_if->sk_cdata.sk_tx_tag, 2308 txd->tx_dmamap, *m_head, txsegs, &nseg, 0); 2309 if (error != 0) { 2310 m_freem(*m_head); 2311 *m_head = NULL; 2312 return (error); 2313 } 2314 } else if (error != 0) 2315 return (error); 2316 if (nseg == 0) { 2317 m_freem(*m_head); 2318 *m_head = NULL; 2319 return (EIO); 2320 } 2321 if (sc_if->sk_cdata.sk_tx_cnt + nseg >= SK_TX_RING_CNT) { 2322 bus_dmamap_unload(sc_if->sk_cdata.sk_tx_tag, txd->tx_dmamap); 2323 return (ENOBUFS); 2324 } 2325 2326 m = *m_head; 2327 if ((m->m_pkthdr.csum_flags & if_gethwassist(sc_if->sk_ifp)) != 0) 2328 cflags = SK_OPCODE_CSUM; 2329 else 2330 cflags = SK_OPCODE_DEFAULT; 2331 si = frag = sc_if->sk_cdata.sk_tx_prod; 2332 for (i = 0; i < nseg; i++) { 2333 f = &sc_if->sk_rdata.sk_tx_ring[frag]; 2334 f->sk_data_lo = htole32(SK_ADDR_LO(txsegs[i].ds_addr)); 2335 f->sk_data_hi = htole32(SK_ADDR_HI(txsegs[i].ds_addr)); 2336 sk_ctl = txsegs[i].ds_len | cflags; 2337 if (i == 0) { 2338 if (cflags == SK_OPCODE_CSUM) 2339 sk_txcksum(sc_if->sk_ifp, m, f); 2340 sk_ctl |= SK_TXCTL_FIRSTFRAG; 2341 } else 2342 sk_ctl |= SK_TXCTL_OWN; 2343 f->sk_ctl = htole32(sk_ctl); 2344 sc_if->sk_cdata.sk_tx_cnt++; 2345 SK_INC(frag, SK_TX_RING_CNT); 2346 } 2347 sc_if->sk_cdata.sk_tx_prod = frag; 2348 2349 /* set EOF on the last descriptor */ 2350 frag = (frag + SK_TX_RING_CNT - 1) % SK_TX_RING_CNT; 2351 f = &sc_if->sk_rdata.sk_tx_ring[frag]; 2352 f->sk_ctl |= htole32(SK_TXCTL_LASTFRAG | SK_TXCTL_EOF_INTR); 2353 2354 /* turn the first descriptor ownership to NIC */ 2355 f = &sc_if->sk_rdata.sk_tx_ring[si]; 2356 f->sk_ctl |= htole32(SK_TXCTL_OWN); 2357 2358 STAILQ_REMOVE_HEAD(&sc_if->sk_cdata.sk_txfreeq, tx_q); 2359 STAILQ_INSERT_TAIL(&sc_if->sk_cdata.sk_txbusyq, txd, tx_q); 2360 txd->tx_m = m; 2361 2362 /* sync descriptors */ 2363 bus_dmamap_sync(sc_if->sk_cdata.sk_tx_tag, txd->tx_dmamap, 2364 BUS_DMASYNC_PREWRITE); 2365 bus_dmamap_sync(sc_if->sk_cdata.sk_tx_ring_tag, 2366 sc_if->sk_cdata.sk_tx_ring_map, 2367 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2368 2369 return (0); 2370 } 2371 2372 static void 2373 sk_start(if_t ifp) 2374 { 2375 struct sk_if_softc *sc_if; 2376 2377 sc_if = if_getsoftc(ifp); 2378 2379 SK_IF_LOCK(sc_if); 2380 sk_start_locked(ifp); 2381 SK_IF_UNLOCK(sc_if); 2382 2383 return; 2384 } 2385 2386 static void 2387 sk_start_locked(if_t ifp) 2388 { 2389 struct sk_softc *sc; 2390 struct sk_if_softc *sc_if; 2391 struct mbuf *m_head; 2392 int enq; 2393 2394 sc_if = if_getsoftc(ifp); 2395 sc = sc_if->sk_softc; 2396 2397 SK_IF_LOCK_ASSERT(sc_if); 2398 2399 for (enq = 0; !if_sendq_empty(ifp) && 2400 sc_if->sk_cdata.sk_tx_cnt < SK_TX_RING_CNT - 1; ) { 2401 m_head = if_dequeue(ifp); 2402 if (m_head == NULL) 2403 break; 2404 2405 /* 2406 * Pack the data into the transmit ring. If we 2407 * don't have room, set the OACTIVE flag and wait 2408 * for the NIC to drain the ring. 2409 */ 2410 if (sk_encap(sc_if, &m_head)) { 2411 if (m_head == NULL) 2412 break; 2413 if_sendq_prepend(ifp, m_head); 2414 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, 0); 2415 break; 2416 } 2417 2418 enq++; 2419 /* 2420 * If there's a BPF listener, bounce a copy of this frame 2421 * to him. 2422 */ 2423 BPF_MTAP(ifp, m_head); 2424 } 2425 2426 if (enq > 0) { 2427 /* Transmit */ 2428 CSR_WRITE_4(sc, sc_if->sk_tx_bmu, SK_TXBMU_TX_START); 2429 2430 /* Set a timeout in case the chip goes out to lunch. */ 2431 sc_if->sk_watchdog_timer = 5; 2432 } 2433 } 2434 2435 static void 2436 sk_watchdog(void *arg) 2437 { 2438 struct sk_if_softc *sc_if; 2439 if_t ifp; 2440 2441 ifp = arg; 2442 sc_if = if_getsoftc(ifp); 2443 2444 SK_IF_LOCK_ASSERT(sc_if); 2445 2446 if (sc_if->sk_watchdog_timer == 0 || --sc_if->sk_watchdog_timer) 2447 goto done; 2448 2449 /* 2450 * Reclaim first as there is a possibility of losing Tx completion 2451 * interrupts. 2452 */ 2453 sk_txeof(sc_if); 2454 if (sc_if->sk_cdata.sk_tx_cnt != 0) { 2455 if_printf(sc_if->sk_ifp, "watchdog timeout\n"); 2456 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2457 if_setdrvflagbits(ifp, 0, IFF_DRV_RUNNING); 2458 sk_init_locked(sc_if); 2459 } 2460 2461 done: 2462 callout_reset(&sc_if->sk_watchdog_ch, hz, sk_watchdog, ifp); 2463 2464 return; 2465 } 2466 2467 static int 2468 skc_shutdown(device_t dev) 2469 { 2470 struct sk_softc *sc; 2471 2472 sc = device_get_softc(dev); 2473 SK_LOCK(sc); 2474 2475 /* Turn off the 'driver is loaded' LED. */ 2476 CSR_WRITE_2(sc, SK_LED, SK_LED_GREEN_OFF); 2477 2478 /* 2479 * Reset the GEnesis controller. Doing this should also 2480 * assert the resets on the attached XMAC(s). 2481 */ 2482 sk_reset(sc); 2483 SK_UNLOCK(sc); 2484 2485 return (0); 2486 } 2487 2488 static int 2489 skc_suspend(device_t dev) 2490 { 2491 struct sk_softc *sc; 2492 struct sk_if_softc *sc_if0, *sc_if1; 2493 if_t ifp0 = NULL, ifp1 = NULL; 2494 2495 sc = device_get_softc(dev); 2496 2497 SK_LOCK(sc); 2498 2499 sc_if0 = sc->sk_if[SK_PORT_A]; 2500 sc_if1 = sc->sk_if[SK_PORT_B]; 2501 if (sc_if0 != NULL) 2502 ifp0 = sc_if0->sk_ifp; 2503 if (sc_if1 != NULL) 2504 ifp1 = sc_if1->sk_ifp; 2505 if (ifp0 != NULL) 2506 sk_stop(sc_if0); 2507 if (ifp1 != NULL) 2508 sk_stop(sc_if1); 2509 sc->sk_suspended = 1; 2510 2511 SK_UNLOCK(sc); 2512 2513 return (0); 2514 } 2515 2516 static int 2517 skc_resume(device_t dev) 2518 { 2519 struct sk_softc *sc; 2520 struct sk_if_softc *sc_if0, *sc_if1; 2521 if_t ifp0 = NULL, ifp1 = NULL; 2522 2523 sc = device_get_softc(dev); 2524 2525 SK_LOCK(sc); 2526 2527 sc_if0 = sc->sk_if[SK_PORT_A]; 2528 sc_if1 = sc->sk_if[SK_PORT_B]; 2529 if (sc_if0 != NULL) 2530 ifp0 = sc_if0->sk_ifp; 2531 if (sc_if1 != NULL) 2532 ifp1 = sc_if1->sk_ifp; 2533 if (ifp0 != NULL && if_getflags(ifp0) & IFF_UP) 2534 sk_init_locked(sc_if0); 2535 if (ifp1 != NULL && if_getflags(ifp1) & IFF_UP) 2536 sk_init_locked(sc_if1); 2537 sc->sk_suspended = 0; 2538 2539 SK_UNLOCK(sc); 2540 2541 return (0); 2542 } 2543 2544 /* 2545 * According to the data sheet from SK-NET GENESIS the hardware can compute 2546 * two Rx checksums at the same time(Each checksum start position is 2547 * programmed in Rx descriptors). However it seems that TCP/UDP checksum 2548 * does not work at least on my Yukon hardware. I tried every possible ways 2549 * to get correct checksum value but couldn't get correct one. So TCP/UDP 2550 * checksum offload was disabled at the moment and only IP checksum offload 2551 * was enabled. 2552 * As normal IP header size is 20 bytes I can't expect it would give an 2553 * increase in throughput. However it seems it doesn't hurt performance in 2554 * my testing. If there is a more detailed information for checksum secret 2555 * of the hardware in question please contact yongari@FreeBSD.org to add 2556 * TCP/UDP checksum offload support. 2557 */ 2558 static __inline void 2559 sk_rxcksum(if_t ifp, struct mbuf *m, u_int32_t csum) 2560 { 2561 struct ether_header *eh; 2562 struct ip *ip; 2563 int32_t hlen, len, pktlen; 2564 u_int16_t csum1, csum2, ipcsum; 2565 2566 pktlen = m->m_pkthdr.len; 2567 if (pktlen < sizeof(struct ether_header) + sizeof(struct ip)) 2568 return; 2569 eh = mtod(m, struct ether_header *); 2570 if (eh->ether_type != htons(ETHERTYPE_IP)) 2571 return; 2572 ip = (struct ip *)(eh + 1); 2573 if (ip->ip_v != IPVERSION) 2574 return; 2575 hlen = ip->ip_hl << 2; 2576 pktlen -= sizeof(struct ether_header); 2577 if (hlen < sizeof(struct ip)) 2578 return; 2579 if (ntohs(ip->ip_len) < hlen) 2580 return; 2581 if (ntohs(ip->ip_len) != pktlen) 2582 return; 2583 2584 csum1 = htons(csum & 0xffff); 2585 csum2 = htons((csum >> 16) & 0xffff); 2586 ipcsum = in_addword(csum1, ~csum2 & 0xffff); 2587 /* checksum fixup for IP options */ 2588 len = hlen - sizeof(struct ip); 2589 if (len > 0) { 2590 /* 2591 * If the second checksum value is correct we can compute IP 2592 * checksum with simple math. Unfortunately the second checksum 2593 * value is wrong so we can't verify the checksum from the 2594 * value(It seems there is some magic here to get correct 2595 * value). If the second checksum value is correct it also 2596 * means we can get TCP/UDP checksum) here. However, it still 2597 * needs pseudo header checksum calculation due to hardware 2598 * limitations. 2599 */ 2600 return; 2601 } 2602 m->m_pkthdr.csum_flags = CSUM_IP_CHECKED; 2603 if (ipcsum == 0xffff) 2604 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 2605 } 2606 2607 static __inline int 2608 sk_rxvalid(struct sk_softc *sc, u_int32_t stat, u_int32_t len) 2609 { 2610 2611 if (sc->sk_type == SK_GENESIS) { 2612 if ((stat & XM_RXSTAT_ERRFRAME) == XM_RXSTAT_ERRFRAME || 2613 XM_RXSTAT_BYTES(stat) != len) 2614 return (0); 2615 } else { 2616 if ((stat & (YU_RXSTAT_CRCERR | YU_RXSTAT_LONGERR | 2617 YU_RXSTAT_MIIERR | YU_RXSTAT_BADFC | YU_RXSTAT_GOODFC | 2618 YU_RXSTAT_JABBER)) != 0 || 2619 (stat & YU_RXSTAT_RXOK) != YU_RXSTAT_RXOK || 2620 YU_RXSTAT_BYTES(stat) != len) 2621 return (0); 2622 } 2623 2624 return (1); 2625 } 2626 2627 static void 2628 sk_rxeof(struct sk_if_softc *sc_if) 2629 { 2630 struct sk_softc *sc; 2631 struct mbuf *m; 2632 if_t ifp; 2633 struct sk_rx_desc *cur_rx; 2634 struct sk_rxdesc *rxd; 2635 int cons, prog; 2636 u_int32_t csum, rxstat, sk_ctl; 2637 2638 sc = sc_if->sk_softc; 2639 ifp = sc_if->sk_ifp; 2640 2641 SK_IF_LOCK_ASSERT(sc_if); 2642 2643 bus_dmamap_sync(sc_if->sk_cdata.sk_rx_ring_tag, 2644 sc_if->sk_cdata.sk_rx_ring_map, BUS_DMASYNC_POSTREAD); 2645 2646 prog = 0; 2647 for (cons = sc_if->sk_cdata.sk_rx_cons; prog < SK_RX_RING_CNT; 2648 prog++, SK_INC(cons, SK_RX_RING_CNT)) { 2649 cur_rx = &sc_if->sk_rdata.sk_rx_ring[cons]; 2650 sk_ctl = le32toh(cur_rx->sk_ctl); 2651 if ((sk_ctl & SK_RXCTL_OWN) != 0) 2652 break; 2653 rxd = &sc_if->sk_cdata.sk_rxdesc[cons]; 2654 rxstat = le32toh(cur_rx->sk_xmac_rxstat); 2655 2656 if ((sk_ctl & (SK_RXCTL_STATUS_VALID | SK_RXCTL_FIRSTFRAG | 2657 SK_RXCTL_LASTFRAG)) != (SK_RXCTL_STATUS_VALID | 2658 SK_RXCTL_FIRSTFRAG | SK_RXCTL_LASTFRAG) || 2659 SK_RXBYTES(sk_ctl) < SK_MIN_FRAMELEN || 2660 SK_RXBYTES(sk_ctl) > SK_MAX_FRAMELEN || 2661 sk_rxvalid(sc, rxstat, SK_RXBYTES(sk_ctl)) == 0) { 2662 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2663 sk_discard_rxbuf(sc_if, cons); 2664 continue; 2665 } 2666 2667 m = rxd->rx_m; 2668 csum = le32toh(cur_rx->sk_csum); 2669 if (sk_newbuf(sc_if, cons) != 0) { 2670 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 2671 /* reuse old buffer */ 2672 sk_discard_rxbuf(sc_if, cons); 2673 continue; 2674 } 2675 m->m_pkthdr.rcvif = ifp; 2676 m->m_pkthdr.len = m->m_len = SK_RXBYTES(sk_ctl); 2677 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 2678 if ((if_getcapenable(ifp) & IFCAP_RXCSUM) != 0) 2679 sk_rxcksum(ifp, m, csum); 2680 SK_IF_UNLOCK(sc_if); 2681 if_input(ifp, m); 2682 SK_IF_LOCK(sc_if); 2683 } 2684 2685 if (prog > 0) { 2686 sc_if->sk_cdata.sk_rx_cons = cons; 2687 bus_dmamap_sync(sc_if->sk_cdata.sk_rx_ring_tag, 2688 sc_if->sk_cdata.sk_rx_ring_map, 2689 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2690 } 2691 } 2692 2693 static void 2694 sk_jumbo_rxeof(struct sk_if_softc *sc_if) 2695 { 2696 struct sk_softc *sc; 2697 struct mbuf *m; 2698 if_t ifp; 2699 struct sk_rx_desc *cur_rx; 2700 struct sk_rxdesc *jrxd; 2701 int cons, prog; 2702 u_int32_t csum, rxstat, sk_ctl; 2703 2704 sc = sc_if->sk_softc; 2705 ifp = sc_if->sk_ifp; 2706 2707 SK_IF_LOCK_ASSERT(sc_if); 2708 2709 bus_dmamap_sync(sc_if->sk_cdata.sk_jumbo_rx_ring_tag, 2710 sc_if->sk_cdata.sk_jumbo_rx_ring_map, BUS_DMASYNC_POSTREAD); 2711 2712 prog = 0; 2713 for (cons = sc_if->sk_cdata.sk_jumbo_rx_cons; 2714 prog < SK_JUMBO_RX_RING_CNT; 2715 prog++, SK_INC(cons, SK_JUMBO_RX_RING_CNT)) { 2716 cur_rx = &sc_if->sk_rdata.sk_jumbo_rx_ring[cons]; 2717 sk_ctl = le32toh(cur_rx->sk_ctl); 2718 if ((sk_ctl & SK_RXCTL_OWN) != 0) 2719 break; 2720 jrxd = &sc_if->sk_cdata.sk_jumbo_rxdesc[cons]; 2721 rxstat = le32toh(cur_rx->sk_xmac_rxstat); 2722 2723 if ((sk_ctl & (SK_RXCTL_STATUS_VALID | SK_RXCTL_FIRSTFRAG | 2724 SK_RXCTL_LASTFRAG)) != (SK_RXCTL_STATUS_VALID | 2725 SK_RXCTL_FIRSTFRAG | SK_RXCTL_LASTFRAG) || 2726 SK_RXBYTES(sk_ctl) < SK_MIN_FRAMELEN || 2727 SK_RXBYTES(sk_ctl) > SK_JUMBO_FRAMELEN || 2728 sk_rxvalid(sc, rxstat, SK_RXBYTES(sk_ctl)) == 0) { 2729 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 2730 sk_discard_jumbo_rxbuf(sc_if, cons); 2731 continue; 2732 } 2733 2734 m = jrxd->rx_m; 2735 csum = le32toh(cur_rx->sk_csum); 2736 if (sk_jumbo_newbuf(sc_if, cons) != 0) { 2737 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 2738 /* reuse old buffer */ 2739 sk_discard_jumbo_rxbuf(sc_if, cons); 2740 continue; 2741 } 2742 m->m_pkthdr.rcvif = ifp; 2743 m->m_pkthdr.len = m->m_len = SK_RXBYTES(sk_ctl); 2744 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 2745 if ((if_getcapenable(ifp) & IFCAP_RXCSUM) != 0) 2746 sk_rxcksum(ifp, m, csum); 2747 SK_IF_UNLOCK(sc_if); 2748 if_input(ifp, m); 2749 SK_IF_LOCK(sc_if); 2750 } 2751 2752 if (prog > 0) { 2753 sc_if->sk_cdata.sk_jumbo_rx_cons = cons; 2754 bus_dmamap_sync(sc_if->sk_cdata.sk_jumbo_rx_ring_tag, 2755 sc_if->sk_cdata.sk_jumbo_rx_ring_map, 2756 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2757 } 2758 } 2759 2760 static void 2761 sk_txeof(struct sk_if_softc *sc_if) 2762 { 2763 struct sk_txdesc *txd; 2764 struct sk_tx_desc *cur_tx; 2765 if_t ifp; 2766 u_int32_t idx, sk_ctl; 2767 2768 ifp = sc_if->sk_ifp; 2769 2770 txd = STAILQ_FIRST(&sc_if->sk_cdata.sk_txbusyq); 2771 if (txd == NULL) 2772 return; 2773 bus_dmamap_sync(sc_if->sk_cdata.sk_tx_ring_tag, 2774 sc_if->sk_cdata.sk_tx_ring_map, BUS_DMASYNC_POSTREAD); 2775 /* 2776 * Go through our tx ring and free mbufs for those 2777 * frames that have been sent. 2778 */ 2779 for (idx = sc_if->sk_cdata.sk_tx_cons;; SK_INC(idx, SK_TX_RING_CNT)) { 2780 if (sc_if->sk_cdata.sk_tx_cnt <= 0) 2781 break; 2782 cur_tx = &sc_if->sk_rdata.sk_tx_ring[idx]; 2783 sk_ctl = le32toh(cur_tx->sk_ctl); 2784 if (sk_ctl & SK_TXCTL_OWN) 2785 break; 2786 sc_if->sk_cdata.sk_tx_cnt--; 2787 if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE); 2788 if ((sk_ctl & SK_TXCTL_LASTFRAG) == 0) 2789 continue; 2790 bus_dmamap_sync(sc_if->sk_cdata.sk_tx_tag, txd->tx_dmamap, 2791 BUS_DMASYNC_POSTWRITE); 2792 bus_dmamap_unload(sc_if->sk_cdata.sk_tx_tag, txd->tx_dmamap); 2793 2794 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2795 m_freem(txd->tx_m); 2796 txd->tx_m = NULL; 2797 STAILQ_REMOVE_HEAD(&sc_if->sk_cdata.sk_txbusyq, tx_q); 2798 STAILQ_INSERT_TAIL(&sc_if->sk_cdata.sk_txfreeq, txd, tx_q); 2799 txd = STAILQ_FIRST(&sc_if->sk_cdata.sk_txbusyq); 2800 } 2801 sc_if->sk_cdata.sk_tx_cons = idx; 2802 sc_if->sk_watchdog_timer = sc_if->sk_cdata.sk_tx_cnt > 0 ? 5 : 0; 2803 2804 bus_dmamap_sync(sc_if->sk_cdata.sk_tx_ring_tag, 2805 sc_if->sk_cdata.sk_tx_ring_map, 2806 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2807 } 2808 2809 static void 2810 sk_tick(void *xsc_if) 2811 { 2812 struct sk_if_softc *sc_if; 2813 struct mii_data *mii; 2814 if_t ifp; 2815 int i; 2816 2817 sc_if = xsc_if; 2818 ifp = sc_if->sk_ifp; 2819 mii = device_get_softc(sc_if->sk_miibus); 2820 2821 if (!(if_getflags(ifp) & IFF_UP)) 2822 return; 2823 2824 if (sc_if->sk_phytype == SK_PHYTYPE_BCOM) { 2825 sk_intr_bcom(sc_if); 2826 return; 2827 } 2828 2829 /* 2830 * According to SysKonnect, the correct way to verify that 2831 * the link has come back up is to poll bit 0 of the GPIO 2832 * register three times. This pin has the signal from the 2833 * link_sync pin connected to it; if we read the same link 2834 * state 3 times in a row, we know the link is up. 2835 */ 2836 for (i = 0; i < 3; i++) { 2837 if (SK_XM_READ_2(sc_if, XM_GPIO) & XM_GPIO_GP0_SET) 2838 break; 2839 } 2840 2841 if (i != 3) { 2842 callout_reset(&sc_if->sk_tick_ch, hz, sk_tick, sc_if); 2843 return; 2844 } 2845 2846 /* Turn the GP0 interrupt back on. */ 2847 SK_XM_CLRBIT_2(sc_if, XM_IMR, XM_IMR_GP0_SET); 2848 SK_XM_READ_2(sc_if, XM_ISR); 2849 mii_tick(mii); 2850 callout_stop(&sc_if->sk_tick_ch); 2851 } 2852 2853 static void 2854 sk_yukon_tick(void *xsc_if) 2855 { 2856 struct sk_if_softc *sc_if; 2857 struct mii_data *mii; 2858 2859 sc_if = xsc_if; 2860 mii = device_get_softc(sc_if->sk_miibus); 2861 2862 mii_tick(mii); 2863 callout_reset(&sc_if->sk_tick_ch, hz, sk_yukon_tick, sc_if); 2864 } 2865 2866 static void 2867 sk_intr_bcom(struct sk_if_softc *sc_if) 2868 { 2869 struct mii_data *mii; 2870 if_t ifp; 2871 int status; 2872 mii = device_get_softc(sc_if->sk_miibus); 2873 ifp = sc_if->sk_ifp; 2874 2875 SK_XM_CLRBIT_2(sc_if, XM_MMUCMD, XM_MMUCMD_TX_ENB|XM_MMUCMD_RX_ENB); 2876 2877 /* 2878 * Read the PHY interrupt register to make sure 2879 * we clear any pending interrupts. 2880 */ 2881 status = sk_xmac_miibus_readreg(sc_if, SK_PHYADDR_BCOM, BRGPHY_MII_ISR); 2882 2883 if (!(if_getdrvflags(ifp) & IFF_DRV_RUNNING)) { 2884 sk_init_xmac(sc_if); 2885 return; 2886 } 2887 2888 if (status & (BRGPHY_ISR_LNK_CHG|BRGPHY_ISR_AN_PR)) { 2889 int lstat; 2890 lstat = sk_xmac_miibus_readreg(sc_if, SK_PHYADDR_BCOM, 2891 BRGPHY_MII_AUXSTS); 2892 2893 if (!(lstat & BRGPHY_AUXSTS_LINK) && sc_if->sk_link) { 2894 mii_mediachg(mii); 2895 /* Turn off the link LED. */ 2896 SK_IF_WRITE_1(sc_if, 0, 2897 SK_LINKLED1_CTL, SK_LINKLED_OFF); 2898 sc_if->sk_link = 0; 2899 } else if (status & BRGPHY_ISR_LNK_CHG) { 2900 sk_xmac_miibus_writereg(sc_if, SK_PHYADDR_BCOM, 2901 BRGPHY_MII_IMR, 0xFF00); 2902 mii_tick(mii); 2903 sc_if->sk_link = 1; 2904 /* Turn on the link LED. */ 2905 SK_IF_WRITE_1(sc_if, 0, SK_LINKLED1_CTL, 2906 SK_LINKLED_ON|SK_LINKLED_LINKSYNC_OFF| 2907 SK_LINKLED_BLINK_OFF); 2908 } else { 2909 mii_tick(mii); 2910 callout_reset(&sc_if->sk_tick_ch, hz, sk_tick, sc_if); 2911 } 2912 } 2913 2914 SK_XM_SETBIT_2(sc_if, XM_MMUCMD, XM_MMUCMD_TX_ENB|XM_MMUCMD_RX_ENB); 2915 2916 return; 2917 } 2918 2919 static void 2920 sk_intr_xmac(struct sk_if_softc *sc_if) 2921 { 2922 u_int16_t status; 2923 2924 status = SK_XM_READ_2(sc_if, XM_ISR); 2925 2926 /* 2927 * Link has gone down. Start MII tick timeout to 2928 * watch for link resync. 2929 */ 2930 if (sc_if->sk_phytype == SK_PHYTYPE_XMAC) { 2931 if (status & XM_ISR_GP0_SET) { 2932 SK_XM_SETBIT_2(sc_if, XM_IMR, XM_IMR_GP0_SET); 2933 callout_reset(&sc_if->sk_tick_ch, hz, sk_tick, sc_if); 2934 } 2935 2936 if (status & XM_ISR_AUTONEG_DONE) { 2937 callout_reset(&sc_if->sk_tick_ch, hz, sk_tick, sc_if); 2938 } 2939 } 2940 2941 if (status & XM_IMR_TX_UNDERRUN) 2942 SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_FLUSH_TXFIFO); 2943 2944 if (status & XM_IMR_RX_OVERRUN) 2945 SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_FLUSH_RXFIFO); 2946 2947 status = SK_XM_READ_2(sc_if, XM_ISR); 2948 2949 return; 2950 } 2951 2952 static void 2953 sk_intr_yukon(struct sk_if_softc *sc_if) 2954 { 2955 u_int8_t status; 2956 2957 status = SK_IF_READ_1(sc_if, 0, SK_GMAC_ISR); 2958 /* RX overrun */ 2959 if ((status & SK_GMAC_INT_RX_OVER) != 0) { 2960 SK_IF_WRITE_1(sc_if, 0, SK_RXMF1_CTRL_TEST, 2961 SK_RFCTL_RX_FIFO_OVER); 2962 } 2963 /* TX underrun */ 2964 if ((status & SK_GMAC_INT_TX_UNDER) != 0) { 2965 SK_IF_WRITE_1(sc_if, 0, SK_RXMF1_CTRL_TEST, 2966 SK_TFCTL_TX_FIFO_UNDER); 2967 } 2968 } 2969 2970 static void 2971 sk_intr(void *xsc) 2972 { 2973 struct sk_softc *sc = xsc; 2974 struct sk_if_softc *sc_if0, *sc_if1; 2975 if_t ifp0 = NULL, ifp1 = NULL; 2976 u_int32_t status; 2977 2978 SK_LOCK(sc); 2979 2980 status = CSR_READ_4(sc, SK_ISSR); 2981 if (status == 0 || status == 0xffffffff || sc->sk_suspended) 2982 goto done_locked; 2983 2984 sc_if0 = sc->sk_if[SK_PORT_A]; 2985 sc_if1 = sc->sk_if[SK_PORT_B]; 2986 2987 if (sc_if0 != NULL) 2988 ifp0 = sc_if0->sk_ifp; 2989 if (sc_if1 != NULL) 2990 ifp1 = sc_if1->sk_ifp; 2991 2992 for (; (status &= sc->sk_intrmask) != 0;) { 2993 /* Handle receive interrupts first. */ 2994 if (status & SK_ISR_RX1_EOF) { 2995 if (if_getmtu(ifp0) > SK_MAX_FRAMELEN) 2996 sk_jumbo_rxeof(sc_if0); 2997 else 2998 sk_rxeof(sc_if0); 2999 CSR_WRITE_4(sc, SK_BMU_RX_CSR0, 3000 SK_RXBMU_CLR_IRQ_EOF|SK_RXBMU_RX_START); 3001 } 3002 if (status & SK_ISR_RX2_EOF) { 3003 if (if_getflags(ifp1) > SK_MAX_FRAMELEN) 3004 sk_jumbo_rxeof(sc_if1); 3005 else 3006 sk_rxeof(sc_if1); 3007 CSR_WRITE_4(sc, SK_BMU_RX_CSR1, 3008 SK_RXBMU_CLR_IRQ_EOF|SK_RXBMU_RX_START); 3009 } 3010 3011 /* Then transmit interrupts. */ 3012 if (status & SK_ISR_TX1_S_EOF) { 3013 sk_txeof(sc_if0); 3014 CSR_WRITE_4(sc, SK_BMU_TXS_CSR0, SK_TXBMU_CLR_IRQ_EOF); 3015 } 3016 if (status & SK_ISR_TX2_S_EOF) { 3017 sk_txeof(sc_if1); 3018 CSR_WRITE_4(sc, SK_BMU_TXS_CSR1, SK_TXBMU_CLR_IRQ_EOF); 3019 } 3020 3021 /* Then MAC interrupts. */ 3022 if (status & SK_ISR_MAC1 && 3023 if_getdrvflags(ifp0) & IFF_DRV_RUNNING) { 3024 if (sc->sk_type == SK_GENESIS) 3025 sk_intr_xmac(sc_if0); 3026 else 3027 sk_intr_yukon(sc_if0); 3028 } 3029 3030 if (status & SK_ISR_MAC2 && 3031 if_getdrvflags(ifp1) & IFF_DRV_RUNNING) { 3032 if (sc->sk_type == SK_GENESIS) 3033 sk_intr_xmac(sc_if1); 3034 else 3035 sk_intr_yukon(sc_if1); 3036 } 3037 3038 if (status & SK_ISR_EXTERNAL_REG) { 3039 if (ifp0 != NULL && 3040 sc_if0->sk_phytype == SK_PHYTYPE_BCOM) 3041 sk_intr_bcom(sc_if0); 3042 if (ifp1 != NULL && 3043 sc_if1->sk_phytype == SK_PHYTYPE_BCOM) 3044 sk_intr_bcom(sc_if1); 3045 } 3046 status = CSR_READ_4(sc, SK_ISSR); 3047 } 3048 3049 CSR_WRITE_4(sc, SK_IMR, sc->sk_intrmask); 3050 3051 if (ifp0 != NULL && !if_sendq_empty(ifp0)) 3052 sk_start_locked(ifp0); 3053 if (ifp1 != NULL && !if_sendq_empty(ifp1)) 3054 sk_start_locked(ifp1); 3055 3056 done_locked: 3057 SK_UNLOCK(sc); 3058 } 3059 3060 static void 3061 sk_init_xmac(struct sk_if_softc *sc_if) 3062 { 3063 struct sk_softc *sc; 3064 if_t ifp; 3065 u_int16_t eaddr[(ETHER_ADDR_LEN+1)/2]; 3066 static const struct sk_bcom_hack bhack[] = { 3067 { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 }, { 0x17, 0x0013 }, 3068 { 0x15, 0x0404 }, { 0x17, 0x8006 }, { 0x15, 0x0132 }, { 0x17, 0x8006 }, 3069 { 0x15, 0x0232 }, { 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 }, 3070 { 0, 0 } }; 3071 3072 SK_IF_LOCK_ASSERT(sc_if); 3073 3074 sc = sc_if->sk_softc; 3075 ifp = sc_if->sk_ifp; 3076 3077 /* Unreset the XMAC. */ 3078 SK_IF_WRITE_2(sc_if, 0, SK_TXF1_MACCTL, SK_TXMACCTL_XMAC_UNRESET); 3079 DELAY(1000); 3080 3081 /* Reset the XMAC's internal state. */ 3082 SK_XM_SETBIT_2(sc_if, XM_GPIO, XM_GPIO_RESETMAC); 3083 3084 /* Save the XMAC II revision */ 3085 sc_if->sk_xmac_rev = XM_XMAC_REV(SK_XM_READ_4(sc_if, XM_DEVID)); 3086 3087 /* 3088 * Perform additional initialization for external PHYs, 3089 * namely for the 1000baseTX cards that use the XMAC's 3090 * GMII mode. 3091 */ 3092 if (sc_if->sk_phytype == SK_PHYTYPE_BCOM) { 3093 int i = 0; 3094 u_int32_t val; 3095 3096 /* Take PHY out of reset. */ 3097 val = sk_win_read_4(sc, SK_GPIO); 3098 if (sc_if->sk_port == SK_PORT_A) 3099 val |= SK_GPIO_DIR0|SK_GPIO_DAT0; 3100 else 3101 val |= SK_GPIO_DIR2|SK_GPIO_DAT2; 3102 sk_win_write_4(sc, SK_GPIO, val); 3103 3104 /* Enable GMII mode on the XMAC. */ 3105 SK_XM_SETBIT_2(sc_if, XM_HWCFG, XM_HWCFG_GMIIMODE); 3106 3107 sk_xmac_miibus_writereg(sc_if, SK_PHYADDR_BCOM, 3108 BRGPHY_MII_BMCR, BRGPHY_BMCR_RESET); 3109 DELAY(10000); 3110 sk_xmac_miibus_writereg(sc_if, SK_PHYADDR_BCOM, 3111 BRGPHY_MII_IMR, 0xFFF0); 3112 3113 /* 3114 * Early versions of the BCM5400 apparently have 3115 * a bug that requires them to have their reserved 3116 * registers initialized to some magic values. I don't 3117 * know what the numbers do, I'm just the messenger. 3118 */ 3119 if (sk_xmac_miibus_readreg(sc_if, SK_PHYADDR_BCOM, 0x03) 3120 == 0x6041) { 3121 while(bhack[i].reg) { 3122 sk_xmac_miibus_writereg(sc_if, SK_PHYADDR_BCOM, 3123 bhack[i].reg, bhack[i].val); 3124 i++; 3125 } 3126 } 3127 } 3128 3129 /* Set station address */ 3130 bcopy(if_getlladdr(sc_if->sk_ifp), eaddr, ETHER_ADDR_LEN); 3131 SK_XM_WRITE_2(sc_if, XM_PAR0, eaddr[0]); 3132 SK_XM_WRITE_2(sc_if, XM_PAR1, eaddr[1]); 3133 SK_XM_WRITE_2(sc_if, XM_PAR2, eaddr[2]); 3134 SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_RX_USE_STATION); 3135 3136 if (if_getflags(ifp) & IFF_BROADCAST) { 3137 SK_XM_CLRBIT_4(sc_if, XM_MODE, XM_MODE_RX_NOBROAD); 3138 } else { 3139 SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_RX_NOBROAD); 3140 } 3141 3142 /* We don't need the FCS appended to the packet. */ 3143 SK_XM_SETBIT_2(sc_if, XM_RXCMD, XM_RXCMD_STRIPFCS); 3144 3145 /* We want short frames padded to 60 bytes. */ 3146 SK_XM_SETBIT_2(sc_if, XM_TXCMD, XM_TXCMD_AUTOPAD); 3147 3148 /* 3149 * Enable the reception of all error frames. This is is 3150 * a necessary evil due to the design of the XMAC. The 3151 * XMAC's receive FIFO is only 8K in size, however jumbo 3152 * frames can be up to 9000 bytes in length. When bad 3153 * frame filtering is enabled, the XMAC's RX FIFO operates 3154 * in 'store and forward' mode. For this to work, the 3155 * entire frame has to fit into the FIFO, but that means 3156 * that jumbo frames larger than 8192 bytes will be 3157 * truncated. Disabling all bad frame filtering causes 3158 * the RX FIFO to operate in streaming mode, in which 3159 * case the XMAC will start transferring frames out of the 3160 * RX FIFO as soon as the FIFO threshold is reached. 3161 */ 3162 if (if_getmtu(ifp) > SK_MAX_FRAMELEN) { 3163 SK_XM_SETBIT_4(sc_if, XM_MODE, XM_MODE_RX_BADFRAMES| 3164 XM_MODE_RX_GIANTS|XM_MODE_RX_RUNTS|XM_MODE_RX_CRCERRS| 3165 XM_MODE_RX_INRANGELEN); 3166 SK_XM_SETBIT_2(sc_if, XM_RXCMD, XM_RXCMD_BIGPKTOK); 3167 } else 3168 SK_XM_CLRBIT_2(sc_if, XM_RXCMD, XM_RXCMD_BIGPKTOK); 3169 3170 /* 3171 * Bump up the transmit threshold. This helps hold off transmit 3172 * underruns when we're blasting traffic from both ports at once. 3173 */ 3174 SK_XM_WRITE_2(sc_if, XM_TX_REQTHRESH, SK_XM_TX_FIFOTHRESH); 3175 3176 /* Set Rx filter */ 3177 sk_rxfilter_genesis(sc_if); 3178 3179 /* Clear and enable interrupts */ 3180 SK_XM_READ_2(sc_if, XM_ISR); 3181 if (sc_if->sk_phytype == SK_PHYTYPE_XMAC) 3182 SK_XM_WRITE_2(sc_if, XM_IMR, XM_INTRS); 3183 else 3184 SK_XM_WRITE_2(sc_if, XM_IMR, 0xFFFF); 3185 3186 /* Configure MAC arbiter */ 3187 switch(sc_if->sk_xmac_rev) { 3188 case XM_XMAC_REV_B2: 3189 sk_win_write_1(sc, SK_RCINIT_RX1, SK_RCINIT_XMAC_B2); 3190 sk_win_write_1(sc, SK_RCINIT_TX1, SK_RCINIT_XMAC_B2); 3191 sk_win_write_1(sc, SK_RCINIT_RX2, SK_RCINIT_XMAC_B2); 3192 sk_win_write_1(sc, SK_RCINIT_TX2, SK_RCINIT_XMAC_B2); 3193 sk_win_write_1(sc, SK_MINIT_RX1, SK_MINIT_XMAC_B2); 3194 sk_win_write_1(sc, SK_MINIT_TX1, SK_MINIT_XMAC_B2); 3195 sk_win_write_1(sc, SK_MINIT_RX2, SK_MINIT_XMAC_B2); 3196 sk_win_write_1(sc, SK_MINIT_TX2, SK_MINIT_XMAC_B2); 3197 sk_win_write_1(sc, SK_RECOVERY_CTL, SK_RECOVERY_XMAC_B2); 3198 break; 3199 case XM_XMAC_REV_C1: 3200 sk_win_write_1(sc, SK_RCINIT_RX1, SK_RCINIT_XMAC_C1); 3201 sk_win_write_1(sc, SK_RCINIT_TX1, SK_RCINIT_XMAC_C1); 3202 sk_win_write_1(sc, SK_RCINIT_RX2, SK_RCINIT_XMAC_C1); 3203 sk_win_write_1(sc, SK_RCINIT_TX2, SK_RCINIT_XMAC_C1); 3204 sk_win_write_1(sc, SK_MINIT_RX1, SK_MINIT_XMAC_C1); 3205 sk_win_write_1(sc, SK_MINIT_TX1, SK_MINIT_XMAC_C1); 3206 sk_win_write_1(sc, SK_MINIT_RX2, SK_MINIT_XMAC_C1); 3207 sk_win_write_1(sc, SK_MINIT_TX2, SK_MINIT_XMAC_C1); 3208 sk_win_write_1(sc, SK_RECOVERY_CTL, SK_RECOVERY_XMAC_B2); 3209 break; 3210 default: 3211 break; 3212 } 3213 sk_win_write_2(sc, SK_MACARB_CTL, 3214 SK_MACARBCTL_UNRESET|SK_MACARBCTL_FASTOE_OFF); 3215 3216 sc_if->sk_link = 1; 3217 3218 return; 3219 } 3220 3221 static void 3222 sk_init_yukon(struct sk_if_softc *sc_if) 3223 { 3224 u_int32_t phy, v; 3225 u_int16_t reg; 3226 struct sk_softc *sc; 3227 if_t ifp; 3228 u_int8_t *eaddr; 3229 int i; 3230 3231 SK_IF_LOCK_ASSERT(sc_if); 3232 3233 sc = sc_if->sk_softc; 3234 ifp = sc_if->sk_ifp; 3235 3236 if (sc->sk_type == SK_YUKON_LITE && 3237 sc->sk_rev >= SK_YUKON_LITE_REV_A3) { 3238 /* 3239 * Workaround code for COMA mode, set PHY reset. 3240 * Otherwise it will not correctly take chip out of 3241 * powerdown (coma) 3242 */ 3243 v = sk_win_read_4(sc, SK_GPIO); 3244 v |= SK_GPIO_DIR9 | SK_GPIO_DAT9; 3245 sk_win_write_4(sc, SK_GPIO, v); 3246 } 3247 3248 /* GMAC and GPHY Reset */ 3249 SK_IF_WRITE_4(sc_if, 0, SK_GPHY_CTRL, SK_GPHY_RESET_SET); 3250 SK_IF_WRITE_4(sc_if, 0, SK_GMAC_CTRL, SK_GMAC_RESET_SET); 3251 DELAY(1000); 3252 3253 if (sc->sk_type == SK_YUKON_LITE && 3254 sc->sk_rev >= SK_YUKON_LITE_REV_A3) { 3255 /* 3256 * Workaround code for COMA mode, clear PHY reset 3257 */ 3258 v = sk_win_read_4(sc, SK_GPIO); 3259 v |= SK_GPIO_DIR9; 3260 v &= ~SK_GPIO_DAT9; 3261 sk_win_write_4(sc, SK_GPIO, v); 3262 } 3263 3264 phy = SK_GPHY_INT_POL_HI | SK_GPHY_DIS_FC | SK_GPHY_DIS_SLEEP | 3265 SK_GPHY_ENA_XC | SK_GPHY_ANEG_ALL | SK_GPHY_ENA_PAUSE; 3266 3267 if (sc->sk_coppertype) 3268 phy |= SK_GPHY_COPPER; 3269 else 3270 phy |= SK_GPHY_FIBER; 3271 3272 SK_IF_WRITE_4(sc_if, 0, SK_GPHY_CTRL, phy | SK_GPHY_RESET_SET); 3273 DELAY(1000); 3274 SK_IF_WRITE_4(sc_if, 0, SK_GPHY_CTRL, phy | SK_GPHY_RESET_CLEAR); 3275 SK_IF_WRITE_4(sc_if, 0, SK_GMAC_CTRL, SK_GMAC_LOOP_OFF | 3276 SK_GMAC_PAUSE_ON | SK_GMAC_RESET_CLEAR); 3277 3278 /* unused read of the interrupt source register */ 3279 SK_IF_READ_2(sc_if, 0, SK_GMAC_ISR); 3280 3281 reg = SK_YU_READ_2(sc_if, YUKON_PAR); 3282 3283 /* MIB Counter Clear Mode set */ 3284 reg |= YU_PAR_MIB_CLR; 3285 SK_YU_WRITE_2(sc_if, YUKON_PAR, reg); 3286 3287 /* MIB Counter Clear Mode clear */ 3288 reg &= ~YU_PAR_MIB_CLR; 3289 SK_YU_WRITE_2(sc_if, YUKON_PAR, reg); 3290 3291 /* receive control reg */ 3292 SK_YU_WRITE_2(sc_if, YUKON_RCR, YU_RCR_CRCR); 3293 3294 /* transmit parameter register */ 3295 SK_YU_WRITE_2(sc_if, YUKON_TPR, YU_TPR_JAM_LEN(0x3) | 3296 YU_TPR_JAM_IPG(0xb) | YU_TPR_JAM2DATA_IPG(0x1a) ); 3297 3298 /* serial mode register */ 3299 reg = YU_SMR_DATA_BLIND(0x1c) | YU_SMR_MFL_VLAN | YU_SMR_IPG_DATA(0x1e); 3300 if (if_getmtu(ifp) > SK_MAX_FRAMELEN) 3301 reg |= YU_SMR_MFL_JUMBO; 3302 SK_YU_WRITE_2(sc_if, YUKON_SMR, reg); 3303 3304 /* Setup Yukon's station address */ 3305 eaddr = if_getlladdr(sc_if->sk_ifp); 3306 for (i = 0; i < 3; i++) 3307 SK_YU_WRITE_2(sc_if, SK_MAC0_0 + i * 4, 3308 eaddr[i * 2] | eaddr[i * 2 + 1] << 8); 3309 /* Set GMAC source address of flow control. */ 3310 for (i = 0; i < 3; i++) 3311 SK_YU_WRITE_2(sc_if, YUKON_SAL1 + i * 4, 3312 eaddr[i * 2] | eaddr[i * 2 + 1] << 8); 3313 /* Set GMAC virtual address. */ 3314 for (i = 0; i < 3; i++) 3315 SK_YU_WRITE_2(sc_if, YUKON_SAL2 + i * 4, 3316 eaddr[i * 2] | eaddr[i * 2 + 1] << 8); 3317 3318 /* Set Rx filter */ 3319 sk_rxfilter_yukon(sc_if); 3320 3321 /* enable interrupt mask for counter overflows */ 3322 SK_YU_WRITE_2(sc_if, YUKON_TIMR, 0); 3323 SK_YU_WRITE_2(sc_if, YUKON_RIMR, 0); 3324 SK_YU_WRITE_2(sc_if, YUKON_TRIMR, 0); 3325 3326 /* Configure RX MAC FIFO Flush Mask */ 3327 v = YU_RXSTAT_FOFL | YU_RXSTAT_CRCERR | YU_RXSTAT_MIIERR | 3328 YU_RXSTAT_BADFC | YU_RXSTAT_GOODFC | YU_RXSTAT_RUNT | 3329 YU_RXSTAT_JABBER; 3330 SK_IF_WRITE_2(sc_if, 0, SK_RXMF1_FLUSH_MASK, v); 3331 3332 /* Disable RX MAC FIFO Flush for YUKON-Lite Rev. A0 only */ 3333 if (sc->sk_type == SK_YUKON_LITE && sc->sk_rev == SK_YUKON_LITE_REV_A0) 3334 v = SK_TFCTL_OPERATION_ON; 3335 else 3336 v = SK_TFCTL_OPERATION_ON | SK_RFCTL_FIFO_FLUSH_ON; 3337 /* Configure RX MAC FIFO */ 3338 SK_IF_WRITE_1(sc_if, 0, SK_RXMF1_CTRL_TEST, SK_RFCTL_RESET_CLEAR); 3339 SK_IF_WRITE_2(sc_if, 0, SK_RXMF1_CTRL_TEST, v); 3340 3341 /* Increase flush threshould to 64 bytes */ 3342 SK_IF_WRITE_2(sc_if, 0, SK_RXMF1_FLUSH_THRESHOLD, 3343 SK_RFCTL_FIFO_THRESHOLD + 1); 3344 3345 /* Configure TX MAC FIFO */ 3346 SK_IF_WRITE_1(sc_if, 0, SK_TXMF1_CTRL_TEST, SK_TFCTL_RESET_CLEAR); 3347 SK_IF_WRITE_2(sc_if, 0, SK_TXMF1_CTRL_TEST, SK_TFCTL_OPERATION_ON); 3348 } 3349 3350 /* 3351 * Note that to properly initialize any part of the GEnesis chip, 3352 * you first have to take it out of reset mode. 3353 */ 3354 static void 3355 sk_init(void *xsc) 3356 { 3357 struct sk_if_softc *sc_if = xsc; 3358 3359 SK_IF_LOCK(sc_if); 3360 sk_init_locked(sc_if); 3361 SK_IF_UNLOCK(sc_if); 3362 3363 return; 3364 } 3365 3366 static void 3367 sk_init_locked(struct sk_if_softc *sc_if) 3368 { 3369 struct sk_softc *sc; 3370 if_t ifp; 3371 struct mii_data *mii; 3372 u_int16_t reg; 3373 u_int32_t imr; 3374 int error; 3375 3376 SK_IF_LOCK_ASSERT(sc_if); 3377 3378 ifp = sc_if->sk_ifp; 3379 sc = sc_if->sk_softc; 3380 mii = device_get_softc(sc_if->sk_miibus); 3381 3382 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) 3383 return; 3384 3385 /* Cancel pending I/O and free all RX/TX buffers. */ 3386 sk_stop(sc_if); 3387 3388 if (sc->sk_type == SK_GENESIS) { 3389 /* Configure LINK_SYNC LED */ 3390 SK_IF_WRITE_1(sc_if, 0, SK_LINKLED1_CTL, SK_LINKLED_ON); 3391 SK_IF_WRITE_1(sc_if, 0, SK_LINKLED1_CTL, 3392 SK_LINKLED_LINKSYNC_ON); 3393 3394 /* Configure RX LED */ 3395 SK_IF_WRITE_1(sc_if, 0, SK_RXLED1_CTL, 3396 SK_RXLEDCTL_COUNTER_START); 3397 3398 /* Configure TX LED */ 3399 SK_IF_WRITE_1(sc_if, 0, SK_TXLED1_CTL, 3400 SK_TXLEDCTL_COUNTER_START); 3401 } 3402 3403 /* 3404 * Configure descriptor poll timer 3405 * 3406 * SK-NET GENESIS data sheet says that possibility of losing Start 3407 * transmit command due to CPU/cache related interim storage problems 3408 * under certain conditions. The document recommends a polling 3409 * mechanism to send a Start transmit command to initiate transfer 3410 * of ready descriptors regulary. To cope with this issue sk(4) now 3411 * enables descriptor poll timer to initiate descriptor processing 3412 * periodically as defined by SK_DPT_TIMER_MAX. However sk(4) still 3413 * issue SK_TXBMU_TX_START to Tx BMU to get fast execution of Tx 3414 * command instead of waiting for next descriptor polling time. 3415 * The same rule may apply to Rx side too but it seems that is not 3416 * needed at the moment. 3417 * Since sk(4) uses descriptor polling as a last resort there is no 3418 * need to set smaller polling time than maximum allowable one. 3419 */ 3420 SK_IF_WRITE_4(sc_if, 0, SK_DPT_INIT, SK_DPT_TIMER_MAX); 3421 3422 /* Configure I2C registers */ 3423 3424 /* Configure XMAC(s) */ 3425 switch (sc->sk_type) { 3426 case SK_GENESIS: 3427 sk_init_xmac(sc_if); 3428 break; 3429 case SK_YUKON: 3430 case SK_YUKON_LITE: 3431 case SK_YUKON_LP: 3432 sk_init_yukon(sc_if); 3433 break; 3434 } 3435 mii_mediachg(mii); 3436 3437 if (sc->sk_type == SK_GENESIS) { 3438 /* Configure MAC FIFOs */ 3439 SK_IF_WRITE_4(sc_if, 0, SK_RXF1_CTL, SK_FIFO_UNRESET); 3440 SK_IF_WRITE_4(sc_if, 0, SK_RXF1_END, SK_FIFO_END); 3441 SK_IF_WRITE_4(sc_if, 0, SK_RXF1_CTL, SK_FIFO_ON); 3442 3443 SK_IF_WRITE_4(sc_if, 0, SK_TXF1_CTL, SK_FIFO_UNRESET); 3444 SK_IF_WRITE_4(sc_if, 0, SK_TXF1_END, SK_FIFO_END); 3445 SK_IF_WRITE_4(sc_if, 0, SK_TXF1_CTL, SK_FIFO_ON); 3446 } 3447 3448 /* Configure transmit arbiter(s) */ 3449 SK_IF_WRITE_1(sc_if, 0, SK_TXAR1_COUNTERCTL, 3450 SK_TXARCTL_ON|SK_TXARCTL_FSYNC_ON); 3451 3452 /* Configure RAMbuffers */ 3453 SK_IF_WRITE_4(sc_if, 0, SK_RXRB1_CTLTST, SK_RBCTL_UNRESET); 3454 SK_IF_WRITE_4(sc_if, 0, SK_RXRB1_START, sc_if->sk_rx_ramstart); 3455 SK_IF_WRITE_4(sc_if, 0, SK_RXRB1_WR_PTR, sc_if->sk_rx_ramstart); 3456 SK_IF_WRITE_4(sc_if, 0, SK_RXRB1_RD_PTR, sc_if->sk_rx_ramstart); 3457 SK_IF_WRITE_4(sc_if, 0, SK_RXRB1_END, sc_if->sk_rx_ramend); 3458 SK_IF_WRITE_4(sc_if, 0, SK_RXRB1_CTLTST, SK_RBCTL_ON); 3459 3460 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_CTLTST, SK_RBCTL_UNRESET); 3461 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_CTLTST, SK_RBCTL_STORENFWD_ON); 3462 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_START, sc_if->sk_tx_ramstart); 3463 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_WR_PTR, sc_if->sk_tx_ramstart); 3464 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_RD_PTR, sc_if->sk_tx_ramstart); 3465 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_END, sc_if->sk_tx_ramend); 3466 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_CTLTST, SK_RBCTL_ON); 3467 3468 /* Configure BMUs */ 3469 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_BMU_CSR, SK_RXBMU_ONLINE); 3470 if (if_getmtu(ifp) > SK_MAX_FRAMELEN) { 3471 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_CURADDR_LO, 3472 SK_ADDR_LO(SK_JUMBO_RX_RING_ADDR(sc_if, 0))); 3473 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_CURADDR_HI, 3474 SK_ADDR_HI(SK_JUMBO_RX_RING_ADDR(sc_if, 0))); 3475 } else { 3476 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_CURADDR_LO, 3477 SK_ADDR_LO(SK_RX_RING_ADDR(sc_if, 0))); 3478 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_CURADDR_HI, 3479 SK_ADDR_HI(SK_RX_RING_ADDR(sc_if, 0))); 3480 } 3481 3482 SK_IF_WRITE_4(sc_if, 1, SK_TXQS1_BMU_CSR, SK_TXBMU_ONLINE); 3483 SK_IF_WRITE_4(sc_if, 1, SK_TXQS1_CURADDR_LO, 3484 SK_ADDR_LO(SK_TX_RING_ADDR(sc_if, 0))); 3485 SK_IF_WRITE_4(sc_if, 1, SK_TXQS1_CURADDR_HI, 3486 SK_ADDR_HI(SK_TX_RING_ADDR(sc_if, 0))); 3487 3488 /* Init descriptors */ 3489 if (if_getmtu(ifp) > SK_MAX_FRAMELEN) 3490 error = sk_init_jumbo_rx_ring(sc_if); 3491 else 3492 error = sk_init_rx_ring(sc_if); 3493 if (error != 0) { 3494 device_printf(sc_if->sk_if_dev, 3495 "initialization failed: no memory for rx buffers\n"); 3496 sk_stop(sc_if); 3497 return; 3498 } 3499 sk_init_tx_ring(sc_if); 3500 3501 /* Set interrupt moderation if changed via sysctl. */ 3502 imr = sk_win_read_4(sc, SK_IMTIMERINIT); 3503 if (imr != SK_IM_USECS(sc->sk_int_mod, sc->sk_int_ticks)) { 3504 sk_win_write_4(sc, SK_IMTIMERINIT, SK_IM_USECS(sc->sk_int_mod, 3505 sc->sk_int_ticks)); 3506 if (bootverbose) 3507 device_printf(sc_if->sk_if_dev, 3508 "interrupt moderation is %d us.\n", 3509 sc->sk_int_mod); 3510 } 3511 3512 /* Configure interrupt handling */ 3513 CSR_READ_4(sc, SK_ISSR); 3514 if (sc_if->sk_port == SK_PORT_A) 3515 sc->sk_intrmask |= SK_INTRS1; 3516 else 3517 sc->sk_intrmask |= SK_INTRS2; 3518 3519 sc->sk_intrmask |= SK_ISR_EXTERNAL_REG; 3520 3521 CSR_WRITE_4(sc, SK_IMR, sc->sk_intrmask); 3522 3523 /* Start BMUs. */ 3524 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_BMU_CSR, SK_RXBMU_RX_START); 3525 3526 switch(sc->sk_type) { 3527 case SK_GENESIS: 3528 /* Enable XMACs TX and RX state machines */ 3529 SK_XM_CLRBIT_2(sc_if, XM_MMUCMD, XM_MMUCMD_IGNPAUSE); 3530 SK_XM_SETBIT_2(sc_if, XM_MMUCMD, XM_MMUCMD_TX_ENB|XM_MMUCMD_RX_ENB); 3531 break; 3532 case SK_YUKON: 3533 case SK_YUKON_LITE: 3534 case SK_YUKON_LP: 3535 reg = SK_YU_READ_2(sc_if, YUKON_GPCR); 3536 reg |= YU_GPCR_TXEN | YU_GPCR_RXEN; 3537 #if 0 3538 /* XXX disable 100Mbps and full duplex mode? */ 3539 reg &= ~(YU_GPCR_SPEED | YU_GPCR_DPLX_DIS); 3540 #endif 3541 SK_YU_WRITE_2(sc_if, YUKON_GPCR, reg); 3542 } 3543 3544 /* Activate descriptor polling timer */ 3545 SK_IF_WRITE_4(sc_if, 0, SK_DPT_TIMER_CTRL, SK_DPT_TCTL_START); 3546 /* start transfer of Tx descriptors */ 3547 CSR_WRITE_4(sc, sc_if->sk_tx_bmu, SK_TXBMU_TX_START); 3548 3549 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, 0); 3550 if_setdrvflagbits(ifp, 0, IFF_DRV_OACTIVE); 3551 3552 switch (sc->sk_type) { 3553 case SK_YUKON: 3554 case SK_YUKON_LITE: 3555 case SK_YUKON_LP: 3556 callout_reset(&sc_if->sk_tick_ch, hz, sk_yukon_tick, sc_if); 3557 break; 3558 } 3559 3560 callout_reset(&sc_if->sk_watchdog_ch, hz, sk_watchdog, ifp); 3561 3562 return; 3563 } 3564 3565 static void 3566 sk_stop(struct sk_if_softc *sc_if) 3567 { 3568 int i; 3569 struct sk_softc *sc; 3570 struct sk_txdesc *txd; 3571 struct sk_rxdesc *rxd; 3572 struct sk_rxdesc *jrxd; 3573 if_t ifp; 3574 u_int32_t val; 3575 3576 SK_IF_LOCK_ASSERT(sc_if); 3577 sc = sc_if->sk_softc; 3578 ifp = sc_if->sk_ifp; 3579 3580 callout_stop(&sc_if->sk_tick_ch); 3581 callout_stop(&sc_if->sk_watchdog_ch); 3582 3583 /* stop Tx descriptor polling timer */ 3584 SK_IF_WRITE_4(sc_if, 0, SK_DPT_TIMER_CTRL, SK_DPT_TCTL_STOP); 3585 /* stop transfer of Tx descriptors */ 3586 CSR_WRITE_4(sc, sc_if->sk_tx_bmu, SK_TXBMU_TX_STOP); 3587 for (i = 0; i < SK_TIMEOUT; i++) { 3588 val = CSR_READ_4(sc, sc_if->sk_tx_bmu); 3589 if ((val & SK_TXBMU_TX_STOP) == 0) 3590 break; 3591 DELAY(1); 3592 } 3593 if (i == SK_TIMEOUT) 3594 device_printf(sc_if->sk_if_dev, 3595 "can not stop transfer of Tx descriptor\n"); 3596 /* stop transfer of Rx descriptors */ 3597 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_BMU_CSR, SK_RXBMU_RX_STOP); 3598 for (i = 0; i < SK_TIMEOUT; i++) { 3599 val = SK_IF_READ_4(sc_if, 0, SK_RXQ1_BMU_CSR); 3600 if ((val & SK_RXBMU_RX_STOP) == 0) 3601 break; 3602 DELAY(1); 3603 } 3604 if (i == SK_TIMEOUT) 3605 device_printf(sc_if->sk_if_dev, 3606 "can not stop transfer of Rx descriptor\n"); 3607 3608 if (sc_if->sk_phytype == SK_PHYTYPE_BCOM) { 3609 /* Put PHY back into reset. */ 3610 val = sk_win_read_4(sc, SK_GPIO); 3611 if (sc_if->sk_port == SK_PORT_A) { 3612 val |= SK_GPIO_DIR0; 3613 val &= ~SK_GPIO_DAT0; 3614 } else { 3615 val |= SK_GPIO_DIR2; 3616 val &= ~SK_GPIO_DAT2; 3617 } 3618 sk_win_write_4(sc, SK_GPIO, val); 3619 } 3620 3621 /* Turn off various components of this interface. */ 3622 SK_XM_SETBIT_2(sc_if, XM_GPIO, XM_GPIO_RESETMAC); 3623 switch (sc->sk_type) { 3624 case SK_GENESIS: 3625 SK_IF_WRITE_2(sc_if, 0, SK_TXF1_MACCTL, SK_TXMACCTL_XMAC_RESET); 3626 SK_IF_WRITE_4(sc_if, 0, SK_RXF1_CTL, SK_FIFO_RESET); 3627 break; 3628 case SK_YUKON: 3629 case SK_YUKON_LITE: 3630 case SK_YUKON_LP: 3631 SK_IF_WRITE_1(sc_if,0, SK_RXMF1_CTRL_TEST, SK_RFCTL_RESET_SET); 3632 SK_IF_WRITE_1(sc_if,0, SK_TXMF1_CTRL_TEST, SK_TFCTL_RESET_SET); 3633 break; 3634 } 3635 SK_IF_WRITE_4(sc_if, 0, SK_RXQ1_BMU_CSR, SK_RXBMU_OFFLINE); 3636 SK_IF_WRITE_4(sc_if, 0, SK_RXRB1_CTLTST, SK_RBCTL_RESET|SK_RBCTL_OFF); 3637 SK_IF_WRITE_4(sc_if, 1, SK_TXQS1_BMU_CSR, SK_TXBMU_OFFLINE); 3638 SK_IF_WRITE_4(sc_if, 1, SK_TXRBS1_CTLTST, SK_RBCTL_RESET|SK_RBCTL_OFF); 3639 SK_IF_WRITE_1(sc_if, 0, SK_TXAR1_COUNTERCTL, SK_TXARCTL_OFF); 3640 SK_IF_WRITE_1(sc_if, 0, SK_RXLED1_CTL, SK_RXLEDCTL_COUNTER_STOP); 3641 SK_IF_WRITE_1(sc_if, 0, SK_TXLED1_CTL, SK_RXLEDCTL_COUNTER_STOP); 3642 SK_IF_WRITE_1(sc_if, 0, SK_LINKLED1_CTL, SK_LINKLED_OFF); 3643 SK_IF_WRITE_1(sc_if, 0, SK_LINKLED1_CTL, SK_LINKLED_LINKSYNC_OFF); 3644 3645 /* Disable interrupts */ 3646 if (sc_if->sk_port == SK_PORT_A) 3647 sc->sk_intrmask &= ~SK_INTRS1; 3648 else 3649 sc->sk_intrmask &= ~SK_INTRS2; 3650 CSR_WRITE_4(sc, SK_IMR, sc->sk_intrmask); 3651 3652 SK_XM_READ_2(sc_if, XM_ISR); 3653 SK_XM_WRITE_2(sc_if, XM_IMR, 0xFFFF); 3654 3655 /* Free RX and TX mbufs still in the queues. */ 3656 for (i = 0; i < SK_RX_RING_CNT; i++) { 3657 rxd = &sc_if->sk_cdata.sk_rxdesc[i]; 3658 if (rxd->rx_m != NULL) { 3659 bus_dmamap_sync(sc_if->sk_cdata.sk_rx_tag, 3660 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); 3661 bus_dmamap_unload(sc_if->sk_cdata.sk_rx_tag, 3662 rxd->rx_dmamap); 3663 m_freem(rxd->rx_m); 3664 rxd->rx_m = NULL; 3665 } 3666 } 3667 for (i = 0; i < SK_JUMBO_RX_RING_CNT; i++) { 3668 jrxd = &sc_if->sk_cdata.sk_jumbo_rxdesc[i]; 3669 if (jrxd->rx_m != NULL) { 3670 bus_dmamap_sync(sc_if->sk_cdata.sk_jumbo_rx_tag, 3671 jrxd->rx_dmamap, BUS_DMASYNC_POSTREAD); 3672 bus_dmamap_unload(sc_if->sk_cdata.sk_jumbo_rx_tag, 3673 jrxd->rx_dmamap); 3674 m_freem(jrxd->rx_m); 3675 jrxd->rx_m = NULL; 3676 } 3677 } 3678 for (i = 0; i < SK_TX_RING_CNT; i++) { 3679 txd = &sc_if->sk_cdata.sk_txdesc[i]; 3680 if (txd->tx_m != NULL) { 3681 bus_dmamap_sync(sc_if->sk_cdata.sk_tx_tag, 3682 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); 3683 bus_dmamap_unload(sc_if->sk_cdata.sk_tx_tag, 3684 txd->tx_dmamap); 3685 m_freem(txd->tx_m); 3686 txd->tx_m = NULL; 3687 } 3688 } 3689 3690 if_setdrvflagbits(ifp, 0, (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)); 3691 3692 return; 3693 } 3694 3695 static int 3696 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high) 3697 { 3698 int error, value; 3699 3700 if (!arg1) 3701 return (EINVAL); 3702 value = *(int *)arg1; 3703 error = sysctl_handle_int(oidp, &value, 0, req); 3704 if (error || !req->newptr) 3705 return (error); 3706 if (value < low || value > high) 3707 return (EINVAL); 3708 *(int *)arg1 = value; 3709 return (0); 3710 } 3711 3712 static int 3713 sysctl_hw_sk_int_mod(SYSCTL_HANDLER_ARGS) 3714 { 3715 return (sysctl_int_range(oidp, arg1, arg2, req, SK_IM_MIN, SK_IM_MAX)); 3716 } 3717