if_sip.c revision 1.76
1 /* $NetBSD: if_sip.c,v 1.76 2003/01/17 08:11:50 itojun Exp $ */ 2 3 /*- 4 * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1999 Network Computer, Inc. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. Neither the name of Network Computer, Inc. nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY NETWORK COMPUTER, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 /* 69 * Device driver for the Silicon Integrated Systems SiS 900, 70 * SiS 7016 10/100, National Semiconductor DP83815 10/100, and 71 * National Semiconductor DP83820 10/100/1000 PCI Ethernet 72 * controllers. 73 * 74 * Originally written to support the SiS 900 by Jason R. Thorpe for 75 * Network Computer, Inc. 76 * 77 * TODO: 78 * 79 * - Reduce the Rx interrupt load. 80 */ 81 82 #include <sys/cdefs.h> 83 __KERNEL_RCSID(0, "$NetBSD: if_sip.c,v 1.76 2003/01/17 08:11:50 itojun Exp $"); 84 85 #include "bpfilter.h" 86 #include "rnd.h" 87 88 #include <sys/param.h> 89 #include <sys/systm.h> 90 #include <sys/callout.h> 91 #include <sys/mbuf.h> 92 #include <sys/malloc.h> 93 #include <sys/kernel.h> 94 #include <sys/socket.h> 95 #include <sys/ioctl.h> 96 #include <sys/errno.h> 97 #include <sys/device.h> 98 #include <sys/queue.h> 99 100 #include <uvm/uvm_extern.h> /* for PAGE_SIZE */ 101 102 #if NRND > 0 103 #include <sys/rnd.h> 104 #endif 105 106 #include <net/if.h> 107 #include <net/if_dl.h> 108 #include <net/if_media.h> 109 #include <net/if_ether.h> 110 111 #if NBPFILTER > 0 112 #include <net/bpf.h> 113 #endif 114 115 #include <machine/bus.h> 116 #include <machine/intr.h> 117 #include <machine/endian.h> 118 119 #include <dev/mii/mii.h> 120 #include <dev/mii/miivar.h> 121 #ifdef DP83820 122 #include <dev/mii/mii_bitbang.h> 123 #endif /* DP83820 */ 124 125 #include <dev/pci/pcireg.h> 126 #include <dev/pci/pcivar.h> 127 #include <dev/pci/pcidevs.h> 128 129 #include <dev/pci/if_sipreg.h> 130 131 #ifdef DP83820 /* DP83820 Gigabit Ethernet */ 132 #define SIP_DECL(x) __CONCAT(gsip_,x) 133 #else /* SiS900 and DP83815 */ 134 #define SIP_DECL(x) __CONCAT(sip_,x) 135 #endif 136 137 #define SIP_STR(x) __STRING(SIP_DECL(x)) 138 139 /* 140 * Transmit descriptor list size. This is arbitrary, but allocate 141 * enough descriptors for 128 pending transmissions, and 8 segments 142 * per packet. This MUST work out to a power of 2. 143 */ 144 #define SIP_NTXSEGS 16 145 #define SIP_NTXSEGS_ALLOC 8 146 147 #define SIP_TXQUEUELEN 256 148 #define SIP_NTXDESC (SIP_TXQUEUELEN * SIP_NTXSEGS_ALLOC) 149 #define SIP_NTXDESC_MASK (SIP_NTXDESC - 1) 150 #define SIP_NEXTTX(x) (((x) + 1) & SIP_NTXDESC_MASK) 151 152 #if defined(DP83020) 153 #define TX_DMAMAP_SIZE ETHER_MAX_LEN_JUMBO 154 #else 155 #define TX_DMAMAP_SIZE MCLBYTES 156 #endif 157 158 /* 159 * Receive descriptor list size. We have one Rx buffer per incoming 160 * packet, so this logic is a little simpler. 161 * 162 * Actually, on the DP83820, we allow the packet to consume more than 163 * one buffer, in order to support jumbo Ethernet frames. In that 164 * case, a packet may consume up to 5 buffers (assuming a 2048 byte 165 * mbuf cluster). 256 receive buffers is only 51 maximum size packets, 166 * so we'd better be quick about handling receive interrupts. 167 */ 168 #if defined(DP83820) 169 #define SIP_NRXDESC 256 170 #else 171 #define SIP_NRXDESC 128 172 #endif /* DP83820 */ 173 #define SIP_NRXDESC_MASK (SIP_NRXDESC - 1) 174 #define SIP_NEXTRX(x) (((x) + 1) & SIP_NRXDESC_MASK) 175 176 /* 177 * Control structures are DMA'd to the SiS900 chip. We allocate them in 178 * a single clump that maps to a single DMA segment to make several things 179 * easier. 180 */ 181 struct sip_control_data { 182 /* 183 * The transmit descriptors. 184 */ 185 struct sip_desc scd_txdescs[SIP_NTXDESC]; 186 187 /* 188 * The receive descriptors. 189 */ 190 struct sip_desc scd_rxdescs[SIP_NRXDESC]; 191 }; 192 193 #define SIP_CDOFF(x) offsetof(struct sip_control_data, x) 194 #define SIP_CDTXOFF(x) SIP_CDOFF(scd_txdescs[(x)]) 195 #define SIP_CDRXOFF(x) SIP_CDOFF(scd_rxdescs[(x)]) 196 197 /* 198 * Software state for transmit jobs. 199 */ 200 struct sip_txsoft { 201 struct mbuf *txs_mbuf; /* head of our mbuf chain */ 202 bus_dmamap_t txs_dmamap; /* our DMA map */ 203 int txs_firstdesc; /* first descriptor in packet */ 204 int txs_lastdesc; /* last descriptor in packet */ 205 SIMPLEQ_ENTRY(sip_txsoft) txs_q; 206 }; 207 208 SIMPLEQ_HEAD(sip_txsq, sip_txsoft); 209 210 /* 211 * Software state for receive jobs. 212 */ 213 struct sip_rxsoft { 214 struct mbuf *rxs_mbuf; /* head of our mbuf chain */ 215 bus_dmamap_t rxs_dmamap; /* our DMA map */ 216 }; 217 218 /* 219 * Software state per device. 220 */ 221 struct sip_softc { 222 struct device sc_dev; /* generic device information */ 223 bus_space_tag_t sc_st; /* bus space tag */ 224 bus_space_handle_t sc_sh; /* bus space handle */ 225 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 226 struct ethercom sc_ethercom; /* ethernet common data */ 227 void *sc_sdhook; /* shutdown hook */ 228 229 const struct sip_product *sc_model; /* which model are we? */ 230 int sc_rev; /* chip revision */ 231 232 void *sc_ih; /* interrupt cookie */ 233 234 struct mii_data sc_mii; /* MII/media information */ 235 236 struct callout sc_tick_ch; /* tick callout */ 237 238 bus_dmamap_t sc_cddmamap; /* control data DMA map */ 239 #define sc_cddma sc_cddmamap->dm_segs[0].ds_addr 240 241 /* 242 * Software state for transmit and receive descriptors. 243 */ 244 struct sip_txsoft sc_txsoft[SIP_TXQUEUELEN]; 245 struct sip_rxsoft sc_rxsoft[SIP_NRXDESC]; 246 247 /* 248 * Control data structures. 249 */ 250 struct sip_control_data *sc_control_data; 251 #define sc_txdescs sc_control_data->scd_txdescs 252 #define sc_rxdescs sc_control_data->scd_rxdescs 253 254 #ifdef SIP_EVENT_COUNTERS 255 /* 256 * Event counters. 257 */ 258 struct evcnt sc_ev_txsstall; /* Tx stalled due to no txs */ 259 struct evcnt sc_ev_txdstall; /* Tx stalled due to no txd */ 260 struct evcnt sc_ev_txforceintr; /* Tx interrupts forced */ 261 struct evcnt sc_ev_txdintr; /* Tx descriptor interrupts */ 262 struct evcnt sc_ev_txiintr; /* Tx idle interrupts */ 263 struct evcnt sc_ev_rxintr; /* Rx interrupts */ 264 struct evcnt sc_ev_hiberr; /* HIBERR interrupts */ 265 #ifdef DP83820 266 struct evcnt sc_ev_rxipsum; /* IP checksums checked in-bound */ 267 struct evcnt sc_ev_rxtcpsum; /* TCP checksums checked in-bound */ 268 struct evcnt sc_ev_rxudpsum; /* UDP checksums checked in-boudn */ 269 struct evcnt sc_ev_txipsum; /* IP checksums comp. out-bound */ 270 struct evcnt sc_ev_txtcpsum; /* TCP checksums comp. out-bound */ 271 struct evcnt sc_ev_txudpsum; /* UDP checksums comp. out-bound */ 272 #endif /* DP83820 */ 273 #endif /* SIP_EVENT_COUNTERS */ 274 275 u_int32_t sc_txcfg; /* prototype TXCFG register */ 276 u_int32_t sc_rxcfg; /* prototype RXCFG register */ 277 u_int32_t sc_imr; /* prototype IMR register */ 278 u_int32_t sc_rfcr; /* prototype RFCR register */ 279 280 u_int32_t sc_cfg; /* prototype CFG register */ 281 282 #ifdef DP83820 283 u_int32_t sc_gpior; /* prototype GPIOR register */ 284 #endif /* DP83820 */ 285 286 u_int32_t sc_tx_fill_thresh; /* transmit fill threshold */ 287 u_int32_t sc_tx_drain_thresh; /* transmit drain threshold */ 288 289 u_int32_t sc_rx_drain_thresh; /* receive drain threshold */ 290 291 int sc_flags; /* misc. flags; see below */ 292 293 int sc_txfree; /* number of free Tx descriptors */ 294 int sc_txnext; /* next ready Tx descriptor */ 295 int sc_txwin; /* Tx descriptors since last intr */ 296 297 struct sip_txsq sc_txfreeq; /* free Tx descsofts */ 298 struct sip_txsq sc_txdirtyq; /* dirty Tx descsofts */ 299 300 int sc_rxptr; /* next ready Rx descriptor/descsoft */ 301 #if defined(DP83820) 302 int sc_rxdiscard; 303 int sc_rxlen; 304 struct mbuf *sc_rxhead; 305 struct mbuf *sc_rxtail; 306 struct mbuf **sc_rxtailp; 307 #endif /* DP83820 */ 308 309 #if NRND > 0 310 rndsource_element_t rnd_source; /* random source */ 311 #endif 312 }; 313 314 /* sc_flags */ 315 #define SIPF_PAUSED 0x00000001 /* paused (802.3x flow control) */ 316 317 #ifdef DP83820 318 #define SIP_RXCHAIN_RESET(sc) \ 319 do { \ 320 (sc)->sc_rxtailp = &(sc)->sc_rxhead; \ 321 *(sc)->sc_rxtailp = NULL; \ 322 (sc)->sc_rxlen = 0; \ 323 } while (/*CONSTCOND*/0) 324 325 #define SIP_RXCHAIN_LINK(sc, m) \ 326 do { \ 327 *(sc)->sc_rxtailp = (sc)->sc_rxtail = (m); \ 328 (sc)->sc_rxtailp = &(m)->m_next; \ 329 } while (/*CONSTCOND*/0) 330 #endif /* DP83820 */ 331 332 #ifdef SIP_EVENT_COUNTERS 333 #define SIP_EVCNT_INCR(ev) (ev)->ev_count++ 334 #else 335 #define SIP_EVCNT_INCR(ev) /* nothing */ 336 #endif 337 338 #define SIP_CDTXADDR(sc, x) ((sc)->sc_cddma + SIP_CDTXOFF((x))) 339 #define SIP_CDRXADDR(sc, x) ((sc)->sc_cddma + SIP_CDRXOFF((x))) 340 341 #define SIP_CDTXSYNC(sc, x, n, ops) \ 342 do { \ 343 int __x, __n; \ 344 \ 345 __x = (x); \ 346 __n = (n); \ 347 \ 348 /* If it will wrap around, sync to the end of the ring. */ \ 349 if ((__x + __n) > SIP_NTXDESC) { \ 350 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 351 SIP_CDTXOFF(__x), sizeof(struct sip_desc) * \ 352 (SIP_NTXDESC - __x), (ops)); \ 353 __n -= (SIP_NTXDESC - __x); \ 354 __x = 0; \ 355 } \ 356 \ 357 /* Now sync whatever is left. */ \ 358 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 359 SIP_CDTXOFF(__x), sizeof(struct sip_desc) * __n, (ops)); \ 360 } while (0) 361 362 #define SIP_CDRXSYNC(sc, x, ops) \ 363 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 364 SIP_CDRXOFF((x)), sizeof(struct sip_desc), (ops)) 365 366 #ifdef DP83820 367 #define SIP_INIT_RXDESC_EXTSTS __sipd->sipd_extsts = 0; 368 #define SIP_RXBUF_LEN (MCLBYTES - 4) 369 #else 370 #define SIP_INIT_RXDESC_EXTSTS /* nothing */ 371 #define SIP_RXBUF_LEN (MCLBYTES - 1) /* field width */ 372 #endif 373 #define SIP_INIT_RXDESC(sc, x) \ 374 do { \ 375 struct sip_rxsoft *__rxs = &(sc)->sc_rxsoft[(x)]; \ 376 struct sip_desc *__sipd = &(sc)->sc_rxdescs[(x)]; \ 377 \ 378 __sipd->sipd_link = \ 379 htole32(SIP_CDRXADDR((sc), SIP_NEXTRX((x)))); \ 380 __sipd->sipd_bufptr = \ 381 htole32(__rxs->rxs_dmamap->dm_segs[0].ds_addr); \ 382 __sipd->sipd_cmdsts = htole32(CMDSTS_INTR | \ 383 (SIP_RXBUF_LEN & CMDSTS_SIZE_MASK)); \ 384 SIP_INIT_RXDESC_EXTSTS \ 385 SIP_CDRXSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 386 } while (0) 387 388 #define SIP_CHIP_VERS(sc, v, p, r) \ 389 ((sc)->sc_model->sip_vendor == (v) && \ 390 (sc)->sc_model->sip_product == (p) && \ 391 (sc)->sc_rev == (r)) 392 393 #define SIP_CHIP_MODEL(sc, v, p) \ 394 ((sc)->sc_model->sip_vendor == (v) && \ 395 (sc)->sc_model->sip_product == (p)) 396 397 #if !defined(DP83820) 398 #define SIP_SIS900_REV(sc, rev) \ 399 SIP_CHIP_VERS((sc), PCI_VENDOR_SIS, PCI_PRODUCT_SIS_900, (rev)) 400 #endif 401 402 #define SIP_TIMEOUT 1000 403 404 void SIP_DECL(start)(struct ifnet *); 405 void SIP_DECL(watchdog)(struct ifnet *); 406 int SIP_DECL(ioctl)(struct ifnet *, u_long, caddr_t); 407 int SIP_DECL(init)(struct ifnet *); 408 void SIP_DECL(stop)(struct ifnet *, int); 409 410 void SIP_DECL(shutdown)(void *); 411 412 void SIP_DECL(reset)(struct sip_softc *); 413 void SIP_DECL(rxdrain)(struct sip_softc *); 414 int SIP_DECL(add_rxbuf)(struct sip_softc *, int); 415 void SIP_DECL(read_eeprom)(struct sip_softc *, int, int, u_int16_t *); 416 void SIP_DECL(tick)(void *); 417 418 #if !defined(DP83820) 419 void SIP_DECL(sis900_set_filter)(struct sip_softc *); 420 #endif /* ! DP83820 */ 421 void SIP_DECL(dp83815_set_filter)(struct sip_softc *); 422 423 #if defined(DP83820) 424 void SIP_DECL(dp83820_read_macaddr)(struct sip_softc *, 425 const struct pci_attach_args *, u_int8_t *); 426 #else 427 void SIP_DECL(sis900_read_macaddr)(struct sip_softc *, 428 const struct pci_attach_args *, u_int8_t *); 429 void SIP_DECL(dp83815_read_macaddr)(struct sip_softc *, 430 const struct pci_attach_args *, u_int8_t *); 431 #endif /* DP83820 */ 432 433 int SIP_DECL(intr)(void *); 434 void SIP_DECL(txintr)(struct sip_softc *); 435 void SIP_DECL(rxintr)(struct sip_softc *); 436 437 #if defined(DP83820) 438 int SIP_DECL(dp83820_mii_readreg)(struct device *, int, int); 439 void SIP_DECL(dp83820_mii_writereg)(struct device *, int, int, int); 440 void SIP_DECL(dp83820_mii_statchg)(struct device *); 441 #else 442 int SIP_DECL(sis900_mii_readreg)(struct device *, int, int); 443 void SIP_DECL(sis900_mii_writereg)(struct device *, int, int, int); 444 void SIP_DECL(sis900_mii_statchg)(struct device *); 445 446 int SIP_DECL(dp83815_mii_readreg)(struct device *, int, int); 447 void SIP_DECL(dp83815_mii_writereg)(struct device *, int, int, int); 448 void SIP_DECL(dp83815_mii_statchg)(struct device *); 449 #endif /* DP83820 */ 450 451 int SIP_DECL(mediachange)(struct ifnet *); 452 void SIP_DECL(mediastatus)(struct ifnet *, struct ifmediareq *); 453 454 int SIP_DECL(match)(struct device *, struct cfdata *, void *); 455 void SIP_DECL(attach)(struct device *, struct device *, void *); 456 457 int SIP_DECL(copy_small) = 0; 458 459 #ifdef DP83820 460 CFATTACH_DECL(gsip, sizeof(struct sip_softc), 461 gsip_match, gsip_attach, NULL, NULL); 462 #else 463 CFATTACH_DECL(sip, sizeof(struct sip_softc), 464 sip_match, sip_attach, NULL, NULL); 465 #endif 466 467 /* 468 * Descriptions of the variants of the SiS900. 469 */ 470 struct sip_variant { 471 int (*sipv_mii_readreg)(struct device *, int, int); 472 void (*sipv_mii_writereg)(struct device *, int, int, int); 473 void (*sipv_mii_statchg)(struct device *); 474 void (*sipv_set_filter)(struct sip_softc *); 475 void (*sipv_read_macaddr)(struct sip_softc *, 476 const struct pci_attach_args *, u_int8_t *); 477 }; 478 479 #if defined(DP83820) 480 u_int32_t SIP_DECL(dp83820_mii_bitbang_read)(struct device *); 481 void SIP_DECL(dp83820_mii_bitbang_write)(struct device *, u_int32_t); 482 483 const struct mii_bitbang_ops SIP_DECL(dp83820_mii_bitbang_ops) = { 484 SIP_DECL(dp83820_mii_bitbang_read), 485 SIP_DECL(dp83820_mii_bitbang_write), 486 { 487 EROMAR_MDIO, /* MII_BIT_MDO */ 488 EROMAR_MDIO, /* MII_BIT_MDI */ 489 EROMAR_MDC, /* MII_BIT_MDC */ 490 EROMAR_MDDIR, /* MII_BIT_DIR_HOST_PHY */ 491 0, /* MII_BIT_DIR_PHY_HOST */ 492 } 493 }; 494 #endif /* DP83820 */ 495 496 #if defined(DP83820) 497 const struct sip_variant SIP_DECL(variant_dp83820) = { 498 SIP_DECL(dp83820_mii_readreg), 499 SIP_DECL(dp83820_mii_writereg), 500 SIP_DECL(dp83820_mii_statchg), 501 SIP_DECL(dp83815_set_filter), 502 SIP_DECL(dp83820_read_macaddr), 503 }; 504 #else 505 const struct sip_variant SIP_DECL(variant_sis900) = { 506 SIP_DECL(sis900_mii_readreg), 507 SIP_DECL(sis900_mii_writereg), 508 SIP_DECL(sis900_mii_statchg), 509 SIP_DECL(sis900_set_filter), 510 SIP_DECL(sis900_read_macaddr), 511 }; 512 513 const struct sip_variant SIP_DECL(variant_dp83815) = { 514 SIP_DECL(dp83815_mii_readreg), 515 SIP_DECL(dp83815_mii_writereg), 516 SIP_DECL(dp83815_mii_statchg), 517 SIP_DECL(dp83815_set_filter), 518 SIP_DECL(dp83815_read_macaddr), 519 }; 520 #endif /* DP83820 */ 521 522 /* 523 * Devices supported by this driver. 524 */ 525 const struct sip_product { 526 pci_vendor_id_t sip_vendor; 527 pci_product_id_t sip_product; 528 const char *sip_name; 529 const struct sip_variant *sip_variant; 530 } SIP_DECL(products)[] = { 531 #if defined(DP83820) 532 { PCI_VENDOR_NS, PCI_PRODUCT_NS_DP83820, 533 "NatSemi DP83820 Gigabit Ethernet", 534 &SIP_DECL(variant_dp83820) }, 535 #else 536 { PCI_VENDOR_SIS, PCI_PRODUCT_SIS_900, 537 "SiS 900 10/100 Ethernet", 538 &SIP_DECL(variant_sis900) }, 539 { PCI_VENDOR_SIS, PCI_PRODUCT_SIS_7016, 540 "SiS 7016 10/100 Ethernet", 541 &SIP_DECL(variant_sis900) }, 542 543 { PCI_VENDOR_NS, PCI_PRODUCT_NS_DP83815, 544 "NatSemi DP83815 10/100 Ethernet", 545 &SIP_DECL(variant_dp83815) }, 546 #endif /* DP83820 */ 547 548 { 0, 0, 549 NULL, 550 NULL }, 551 }; 552 553 static const struct sip_product * 554 SIP_DECL(lookup)(const struct pci_attach_args *pa) 555 { 556 const struct sip_product *sip; 557 558 for (sip = SIP_DECL(products); sip->sip_name != NULL; sip++) { 559 if (PCI_VENDOR(pa->pa_id) == sip->sip_vendor && 560 PCI_PRODUCT(pa->pa_id) == sip->sip_product) 561 return (sip); 562 } 563 return (NULL); 564 } 565 566 #ifdef DP83820 567 /* 568 * I really hate stupid hardware vendors. There's a bit in the EEPROM 569 * which indicates if the card can do 64-bit data transfers. Unfortunately, 570 * several vendors of 32-bit cards fail to clear this bit in the EEPROM, 571 * which means we try to use 64-bit data transfers on those cards if we 572 * happen to be plugged into a 32-bit slot. 573 * 574 * What we do is use this table of cards known to be 64-bit cards. If 575 * you have a 64-bit card who's subsystem ID is not listed in this table, 576 * send the output of "pcictl dump ..." of the device to me so that your 577 * card will use the 64-bit data path when plugged into a 64-bit slot. 578 * 579 * -- Jason R. Thorpe <thorpej (at) netbsd.org> 580 * June 30, 2002 581 */ 582 static int 583 SIP_DECL(check_64bit)(const struct pci_attach_args *pa) 584 { 585 static const struct { 586 pci_vendor_id_t c64_vendor; 587 pci_product_id_t c64_product; 588 } card64[] = { 589 /* Asante GigaNIX */ 590 { 0x128a, 0x0002 }, 591 592 /* Accton EN1407-T, Planex GN-1000TE */ 593 { 0x1113, 0x1407 }, 594 595 /* Netgear GA-621 */ 596 { 0x1385, 0x621a }, 597 598 { 0, 0} 599 }; 600 pcireg_t subsys; 601 int i; 602 603 subsys = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 604 605 for (i = 0; card64[i].c64_vendor != 0; i++) { 606 if (PCI_VENDOR(subsys) == card64[i].c64_vendor && 607 PCI_PRODUCT(subsys) == card64[i].c64_product) 608 return (1); 609 } 610 611 return (0); 612 } 613 #endif /* DP83820 */ 614 615 int 616 SIP_DECL(match)(struct device *parent, struct cfdata *cf, void *aux) 617 { 618 struct pci_attach_args *pa = aux; 619 620 if (SIP_DECL(lookup)(pa) != NULL) 621 return (1); 622 623 return (0); 624 } 625 626 void 627 SIP_DECL(attach)(struct device *parent, struct device *self, void *aux) 628 { 629 struct sip_softc *sc = (struct sip_softc *) self; 630 struct pci_attach_args *pa = aux; 631 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 632 pci_chipset_tag_t pc = pa->pa_pc; 633 pci_intr_handle_t ih; 634 const char *intrstr = NULL; 635 bus_space_tag_t iot, memt; 636 bus_space_handle_t ioh, memh; 637 bus_dma_segment_t seg; 638 int ioh_valid, memh_valid; 639 int i, rseg, error; 640 const struct sip_product *sip; 641 pcireg_t pmode; 642 u_int8_t enaddr[ETHER_ADDR_LEN]; 643 int pmreg; 644 #ifdef DP83820 645 pcireg_t memtype; 646 u_int32_t reg; 647 #endif /* DP83820 */ 648 649 callout_init(&sc->sc_tick_ch); 650 651 sip = SIP_DECL(lookup)(pa); 652 if (sip == NULL) { 653 printf("\n"); 654 panic(SIP_STR(attach) ": impossible"); 655 } 656 sc->sc_rev = PCI_REVISION(pa->pa_class); 657 658 printf(": %s, rev %#02x\n", sip->sip_name, sc->sc_rev); 659 660 sc->sc_model = sip; 661 662 /* 663 * XXX Work-around broken PXE firmware on some boards. 664 * 665 * The DP83815 shares an address decoder with the MEM BAR 666 * and the ROM BAR. Make sure the ROM BAR is disabled, 667 * so that memory mapped access works. 668 */ 669 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM, 670 pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM) & 671 ~PCI_MAPREG_ROM_ENABLE); 672 673 /* 674 * Map the device. 675 */ 676 ioh_valid = (pci_mapreg_map(pa, SIP_PCI_CFGIOA, 677 PCI_MAPREG_TYPE_IO, 0, 678 &iot, &ioh, NULL, NULL) == 0); 679 #ifdef DP83820 680 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, SIP_PCI_CFGMA); 681 switch (memtype) { 682 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: 683 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: 684 memh_valid = (pci_mapreg_map(pa, SIP_PCI_CFGMA, 685 memtype, 0, &memt, &memh, NULL, NULL) == 0); 686 break; 687 default: 688 memh_valid = 0; 689 } 690 #else 691 memh_valid = (pci_mapreg_map(pa, SIP_PCI_CFGMA, 692 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 693 &memt, &memh, NULL, NULL) == 0); 694 #endif /* DP83820 */ 695 696 if (memh_valid) { 697 sc->sc_st = memt; 698 sc->sc_sh = memh; 699 } else if (ioh_valid) { 700 sc->sc_st = iot; 701 sc->sc_sh = ioh; 702 } else { 703 printf("%s: unable to map device registers\n", 704 sc->sc_dev.dv_xname); 705 return; 706 } 707 708 sc->sc_dmat = pa->pa_dmat; 709 710 /* 711 * Make sure bus mastering is enabled. Also make sure 712 * Write/Invalidate is enabled if we're allowed to use it. 713 */ 714 pmreg = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 715 if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) 716 pmreg |= PCI_COMMAND_INVALIDATE_ENABLE; 717 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 718 pmreg | PCI_COMMAND_MASTER_ENABLE); 719 720 /* Get it out of power save mode if needed. */ 721 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 722 pmode = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR) & 723 PCI_PMCSR_STATE_MASK; 724 if (pmode == PCI_PMCSR_STATE_D3) { 725 /* 726 * The card has lost all configuration data in 727 * this state, so punt. 728 */ 729 printf("%s: unable to wake up from power state D3\n", 730 sc->sc_dev.dv_xname); 731 return; 732 } 733 if (pmode != PCI_PMCSR_STATE_D0) { 734 printf("%s: waking up from power state D%d\n", 735 sc->sc_dev.dv_xname, pmode); 736 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 737 PCI_PMCSR_STATE_D0); 738 } 739 } 740 741 /* 742 * Map and establish our interrupt. 743 */ 744 if (pci_intr_map(pa, &ih)) { 745 printf("%s: unable to map interrupt\n", sc->sc_dev.dv_xname); 746 return; 747 } 748 intrstr = pci_intr_string(pc, ih); 749 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, SIP_DECL(intr), sc); 750 if (sc->sc_ih == NULL) { 751 printf("%s: unable to establish interrupt", 752 sc->sc_dev.dv_xname); 753 if (intrstr != NULL) 754 printf(" at %s", intrstr); 755 printf("\n"); 756 return; 757 } 758 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 759 760 SIMPLEQ_INIT(&sc->sc_txfreeq); 761 SIMPLEQ_INIT(&sc->sc_txdirtyq); 762 763 /* 764 * Allocate the control data structures, and create and load the 765 * DMA map for it. 766 */ 767 if ((error = bus_dmamem_alloc(sc->sc_dmat, 768 sizeof(struct sip_control_data), PAGE_SIZE, 0, &seg, 1, &rseg, 769 0)) != 0) { 770 printf("%s: unable to allocate control data, error = %d\n", 771 sc->sc_dev.dv_xname, error); 772 goto fail_0; 773 } 774 775 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 776 sizeof(struct sip_control_data), (caddr_t *)&sc->sc_control_data, 777 BUS_DMA_COHERENT)) != 0) { 778 printf("%s: unable to map control data, error = %d\n", 779 sc->sc_dev.dv_xname, error); 780 goto fail_1; 781 } 782 783 if ((error = bus_dmamap_create(sc->sc_dmat, 784 sizeof(struct sip_control_data), 1, 785 sizeof(struct sip_control_data), 0, 0, &sc->sc_cddmamap)) != 0) { 786 printf("%s: unable to create control data DMA map, " 787 "error = %d\n", sc->sc_dev.dv_xname, error); 788 goto fail_2; 789 } 790 791 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_cddmamap, 792 sc->sc_control_data, sizeof(struct sip_control_data), NULL, 793 0)) != 0) { 794 printf("%s: unable to load control data DMA map, error = %d\n", 795 sc->sc_dev.dv_xname, error); 796 goto fail_3; 797 } 798 799 /* 800 * Create the transmit buffer DMA maps. 801 */ 802 for (i = 0; i < SIP_TXQUEUELEN; i++) { 803 if ((error = bus_dmamap_create(sc->sc_dmat, TX_DMAMAP_SIZE, 804 SIP_NTXSEGS, MCLBYTES, 0, 0, 805 &sc->sc_txsoft[i].txs_dmamap)) != 0) { 806 printf("%s: unable to create tx DMA map %d, " 807 "error = %d\n", sc->sc_dev.dv_xname, i, error); 808 goto fail_4; 809 } 810 } 811 812 /* 813 * Create the receive buffer DMA maps. 814 */ 815 for (i = 0; i < SIP_NRXDESC; i++) { 816 if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, 817 MCLBYTES, 0, 0, &sc->sc_rxsoft[i].rxs_dmamap)) != 0) { 818 printf("%s: unable to create rx DMA map %d, " 819 "error = %d\n", sc->sc_dev.dv_xname, i, error); 820 goto fail_5; 821 } 822 sc->sc_rxsoft[i].rxs_mbuf = NULL; 823 } 824 825 /* 826 * Reset the chip to a known state. 827 */ 828 SIP_DECL(reset)(sc); 829 830 /* 831 * Read the Ethernet address from the EEPROM. This might 832 * also fetch other stuff from the EEPROM and stash it 833 * in the softc. 834 */ 835 sc->sc_cfg = 0; 836 #if !defined(DP83820) 837 if (SIP_SIS900_REV(sc,SIS_REV_635) || 838 SIP_SIS900_REV(sc,SIS_REV_900B)) 839 sc->sc_cfg |= (CFG_PESEL | CFG_RNDCNT); 840 #endif 841 842 (*sip->sip_variant->sipv_read_macaddr)(sc, pa, enaddr); 843 844 printf("%s: Ethernet address %s\n", sc->sc_dev.dv_xname, 845 ether_sprintf(enaddr)); 846 847 /* 848 * Initialize the configuration register: aggressive PCI 849 * bus request algorithm, default backoff, default OW timer, 850 * default parity error detection. 851 * 852 * NOTE: "Big endian mode" is useless on the SiS900 and 853 * friends -- it affects packet data, not descriptors. 854 */ 855 #ifdef DP83820 856 /* 857 * Cause the chip to load configuration data from the EEPROM. 858 */ 859 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_PTSCR, PTSCR_EELOAD_EN); 860 for (i = 0; i < 10000; i++) { 861 delay(10); 862 if ((bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_PTSCR) & 863 PTSCR_EELOAD_EN) == 0) 864 break; 865 } 866 if (bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_PTSCR) & 867 PTSCR_EELOAD_EN) { 868 printf("%s: timeout loading configuration from EEPROM\n", 869 sc->sc_dev.dv_xname); 870 return; 871 } 872 873 sc->sc_gpior = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_GPIOR); 874 875 reg = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_CFG); 876 if (reg & CFG_PCI64_DET) { 877 printf("%s: 64-bit PCI slot detected", sc->sc_dev.dv_xname); 878 /* 879 * Check to see if this card is 64-bit. If so, enable 64-bit 880 * data transfers. 881 * 882 * We can't use the DATA64_EN bit in the EEPROM, because 883 * vendors of 32-bit cards fail to clear that bit in many 884 * cases (yet the card still detects that it's in a 64-bit 885 * slot; go figure). 886 */ 887 if (SIP_DECL(check_64bit)(pa)) { 888 sc->sc_cfg |= CFG_DATA64_EN; 889 printf(", using 64-bit data transfers"); 890 } 891 printf("\n"); 892 } 893 894 /* 895 * XXX Need some PCI flags indicating support for 896 * XXX 64-bit addressing. 897 */ 898 #if 0 899 if (reg & CFG_M64ADDR) 900 sc->sc_cfg |= CFG_M64ADDR; 901 if (reg & CFG_T64ADDR) 902 sc->sc_cfg |= CFG_T64ADDR; 903 #endif 904 905 if (reg & (CFG_TBI_EN|CFG_EXT_125)) { 906 const char *sep = ""; 907 printf("%s: using ", sc->sc_dev.dv_xname); 908 if (reg & CFG_EXT_125) { 909 sc->sc_cfg |= CFG_EXT_125; 910 printf("%s125MHz clock", sep); 911 sep = ", "; 912 } 913 if (reg & CFG_TBI_EN) { 914 sc->sc_cfg |= CFG_TBI_EN; 915 printf("%sten-bit interface", sep); 916 sep = ", "; 917 } 918 printf("\n"); 919 } 920 if ((pa->pa_flags & PCI_FLAGS_MRM_OKAY) == 0 || 921 (reg & CFG_MRM_DIS) != 0) 922 sc->sc_cfg |= CFG_MRM_DIS; 923 if ((pa->pa_flags & PCI_FLAGS_MWI_OKAY) == 0 || 924 (reg & CFG_MWI_DIS) != 0) 925 sc->sc_cfg |= CFG_MWI_DIS; 926 927 /* 928 * Use the extended descriptor format on the DP83820. This 929 * gives us an interface to VLAN tagging and IPv4/TCP/UDP 930 * checksumming. 931 */ 932 sc->sc_cfg |= CFG_EXTSTS_EN; 933 #endif /* DP83820 */ 934 935 /* 936 * Initialize our media structures and probe the MII. 937 */ 938 sc->sc_mii.mii_ifp = ifp; 939 sc->sc_mii.mii_readreg = sip->sip_variant->sipv_mii_readreg; 940 sc->sc_mii.mii_writereg = sip->sip_variant->sipv_mii_writereg; 941 sc->sc_mii.mii_statchg = sip->sip_variant->sipv_mii_statchg; 942 ifmedia_init(&sc->sc_mii.mii_media, IFM_IMASK, SIP_DECL(mediachange), 943 SIP_DECL(mediastatus)); 944 945 mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff, MII_PHY_ANY, 946 MII_OFFSET_ANY, 0); 947 if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { 948 ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL); 949 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE); 950 } else 951 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO); 952 953 ifp = &sc->sc_ethercom.ec_if; 954 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 955 ifp->if_softc = sc; 956 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 957 ifp->if_ioctl = SIP_DECL(ioctl); 958 ifp->if_start = SIP_DECL(start); 959 ifp->if_watchdog = SIP_DECL(watchdog); 960 ifp->if_init = SIP_DECL(init); 961 ifp->if_stop = SIP_DECL(stop); 962 IFQ_SET_READY(&ifp->if_snd); 963 964 /* 965 * We can support 802.1Q VLAN-sized frames. 966 */ 967 sc->sc_ethercom.ec_capabilities |= ETHERCAP_VLAN_MTU; 968 969 #ifdef DP83820 970 /* 971 * And the DP83820 can do VLAN tagging in hardware, and 972 * support the jumbo Ethernet MTU. 973 */ 974 sc->sc_ethercom.ec_capabilities |= 975 ETHERCAP_VLAN_HWTAGGING | ETHERCAP_JUMBO_MTU; 976 977 /* 978 * The DP83820 can do IPv4, TCPv4, and UDPv4 checksums 979 * in hardware. 980 */ 981 ifp->if_capabilities |= IFCAP_CSUM_IPv4 | IFCAP_CSUM_TCPv4 | 982 IFCAP_CSUM_UDPv4; 983 #endif /* DP83820 */ 984 985 /* 986 * Attach the interface. 987 */ 988 if_attach(ifp); 989 ether_ifattach(ifp, enaddr); 990 #if NRND > 0 991 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 992 RND_TYPE_NET, 0); 993 #endif 994 995 /* 996 * The number of bytes that must be available in 997 * the Tx FIFO before the bus master can DMA more 998 * data into the FIFO. 999 */ 1000 sc->sc_tx_fill_thresh = 64 / 32; 1001 1002 /* 1003 * Start at a drain threshold of 512 bytes. We will 1004 * increase it if a DMA underrun occurs. 1005 * 1006 * XXX The minimum value of this variable should be 1007 * tuned. We may be able to improve performance 1008 * by starting with a lower value. That, however, 1009 * may trash the first few outgoing packets if the 1010 * PCI bus is saturated. 1011 */ 1012 sc->sc_tx_drain_thresh = 1504 / 32; 1013 1014 /* 1015 * Initialize the Rx FIFO drain threshold. 1016 * 1017 * This is in units of 8 bytes. 1018 * 1019 * We should never set this value lower than 2; 14 bytes are 1020 * required to filter the packet. 1021 */ 1022 sc->sc_rx_drain_thresh = 128 / 8; 1023 1024 #ifdef SIP_EVENT_COUNTERS 1025 /* 1026 * Attach event counters. 1027 */ 1028 evcnt_attach_dynamic(&sc->sc_ev_txsstall, EVCNT_TYPE_MISC, 1029 NULL, sc->sc_dev.dv_xname, "txsstall"); 1030 evcnt_attach_dynamic(&sc->sc_ev_txdstall, EVCNT_TYPE_MISC, 1031 NULL, sc->sc_dev.dv_xname, "txdstall"); 1032 evcnt_attach_dynamic(&sc->sc_ev_txforceintr, EVCNT_TYPE_INTR, 1033 NULL, sc->sc_dev.dv_xname, "txforceintr"); 1034 evcnt_attach_dynamic(&sc->sc_ev_txdintr, EVCNT_TYPE_INTR, 1035 NULL, sc->sc_dev.dv_xname, "txdintr"); 1036 evcnt_attach_dynamic(&sc->sc_ev_txiintr, EVCNT_TYPE_INTR, 1037 NULL, sc->sc_dev.dv_xname, "txiintr"); 1038 evcnt_attach_dynamic(&sc->sc_ev_rxintr, EVCNT_TYPE_INTR, 1039 NULL, sc->sc_dev.dv_xname, "rxintr"); 1040 evcnt_attach_dynamic(&sc->sc_ev_hiberr, EVCNT_TYPE_INTR, 1041 NULL, sc->sc_dev.dv_xname, "hiberr"); 1042 #ifdef DP83820 1043 evcnt_attach_dynamic(&sc->sc_ev_rxipsum, EVCNT_TYPE_MISC, 1044 NULL, sc->sc_dev.dv_xname, "rxipsum"); 1045 evcnt_attach_dynamic(&sc->sc_ev_rxtcpsum, EVCNT_TYPE_MISC, 1046 NULL, sc->sc_dev.dv_xname, "rxtcpsum"); 1047 evcnt_attach_dynamic(&sc->sc_ev_rxudpsum, EVCNT_TYPE_MISC, 1048 NULL, sc->sc_dev.dv_xname, "rxudpsum"); 1049 evcnt_attach_dynamic(&sc->sc_ev_txipsum, EVCNT_TYPE_MISC, 1050 NULL, sc->sc_dev.dv_xname, "txipsum"); 1051 evcnt_attach_dynamic(&sc->sc_ev_txtcpsum, EVCNT_TYPE_MISC, 1052 NULL, sc->sc_dev.dv_xname, "txtcpsum"); 1053 evcnt_attach_dynamic(&sc->sc_ev_txudpsum, EVCNT_TYPE_MISC, 1054 NULL, sc->sc_dev.dv_xname, "txudpsum"); 1055 #endif /* DP83820 */ 1056 #endif /* SIP_EVENT_COUNTERS */ 1057 1058 /* 1059 * Make sure the interface is shutdown during reboot. 1060 */ 1061 sc->sc_sdhook = shutdownhook_establish(SIP_DECL(shutdown), sc); 1062 if (sc->sc_sdhook == NULL) 1063 printf("%s: WARNING: unable to establish shutdown hook\n", 1064 sc->sc_dev.dv_xname); 1065 return; 1066 1067 /* 1068 * Free any resources we've allocated during the failed attach 1069 * attempt. Do this in reverse order and fall through. 1070 */ 1071 fail_5: 1072 for (i = 0; i < SIP_NRXDESC; i++) { 1073 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 1074 bus_dmamap_destroy(sc->sc_dmat, 1075 sc->sc_rxsoft[i].rxs_dmamap); 1076 } 1077 fail_4: 1078 for (i = 0; i < SIP_TXQUEUELEN; i++) { 1079 if (sc->sc_txsoft[i].txs_dmamap != NULL) 1080 bus_dmamap_destroy(sc->sc_dmat, 1081 sc->sc_txsoft[i].txs_dmamap); 1082 } 1083 bus_dmamap_unload(sc->sc_dmat, sc->sc_cddmamap); 1084 fail_3: 1085 bus_dmamap_destroy(sc->sc_dmat, sc->sc_cddmamap); 1086 fail_2: 1087 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_control_data, 1088 sizeof(struct sip_control_data)); 1089 fail_1: 1090 bus_dmamem_free(sc->sc_dmat, &seg, rseg); 1091 fail_0: 1092 return; 1093 } 1094 1095 /* 1096 * sip_shutdown: 1097 * 1098 * Make sure the interface is stopped at reboot time. 1099 */ 1100 void 1101 SIP_DECL(shutdown)(void *arg) 1102 { 1103 struct sip_softc *sc = arg; 1104 1105 SIP_DECL(stop)(&sc->sc_ethercom.ec_if, 1); 1106 } 1107 1108 /* 1109 * sip_start: [ifnet interface function] 1110 * 1111 * Start packet transmission on the interface. 1112 */ 1113 void 1114 SIP_DECL(start)(struct ifnet *ifp) 1115 { 1116 struct sip_softc *sc = ifp->if_softc; 1117 struct mbuf *m0, *m; 1118 struct sip_txsoft *txs; 1119 bus_dmamap_t dmamap; 1120 int error, nexttx, lasttx, seg; 1121 int ofree = sc->sc_txfree; 1122 #if 0 1123 int firsttx = sc->sc_txnext; 1124 #endif 1125 #ifdef DP83820 1126 struct m_tag *mtag; 1127 u_int32_t extsts; 1128 #endif 1129 1130 /* 1131 * If we've been told to pause, don't transmit any more packets. 1132 */ 1133 if (sc->sc_flags & SIPF_PAUSED) 1134 ifp->if_flags |= IFF_OACTIVE; 1135 1136 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 1137 return; 1138 1139 /* 1140 * Loop through the send queue, setting up transmit descriptors 1141 * until we drain the queue, or use up all available transmit 1142 * descriptors. 1143 */ 1144 for (;;) { 1145 /* Get a work queue entry. */ 1146 if ((txs = SIMPLEQ_FIRST(&sc->sc_txfreeq)) == NULL) { 1147 SIP_EVCNT_INCR(&sc->sc_ev_txsstall); 1148 break; 1149 } 1150 1151 /* 1152 * Grab a packet off the queue. 1153 */ 1154 IFQ_POLL(&ifp->if_snd, m0); 1155 if (m0 == NULL) 1156 break; 1157 #ifndef DP83820 1158 m = NULL; 1159 #endif 1160 1161 dmamap = txs->txs_dmamap; 1162 1163 #ifdef DP83820 1164 /* 1165 * Load the DMA map. If this fails, the packet either 1166 * didn't fit in the allotted number of segments, or we 1167 * were short on resources. For the too-many-segments 1168 * case, we simply report an error and drop the packet, 1169 * since we can't sanely copy a jumbo packet to a single 1170 * buffer. 1171 */ 1172 error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, 1173 BUS_DMA_WRITE|BUS_DMA_NOWAIT); 1174 if (error) { 1175 if (error == EFBIG) { 1176 printf("%s: Tx packet consumes too many " 1177 "DMA segments, dropping...\n", 1178 sc->sc_dev.dv_xname); 1179 IFQ_DEQUEUE(&ifp->if_snd, m0); 1180 m_freem(m0); 1181 continue; 1182 } 1183 /* 1184 * Short on resources, just stop for now. 1185 */ 1186 break; 1187 } 1188 #else /* DP83820 */ 1189 /* 1190 * Load the DMA map. If this fails, the packet either 1191 * didn't fit in the alloted number of segments, or we 1192 * were short on resources. In this case, we'll copy 1193 * and try again. 1194 */ 1195 if (bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, 1196 BUS_DMA_WRITE|BUS_DMA_NOWAIT) != 0) { 1197 MGETHDR(m, M_DONTWAIT, MT_DATA); 1198 if (m == NULL) { 1199 printf("%s: unable to allocate Tx mbuf\n", 1200 sc->sc_dev.dv_xname); 1201 break; 1202 } 1203 if (m0->m_pkthdr.len > MHLEN) { 1204 MCLGET(m, M_DONTWAIT); 1205 if ((m->m_flags & M_EXT) == 0) { 1206 printf("%s: unable to allocate Tx " 1207 "cluster\n", sc->sc_dev.dv_xname); 1208 m_freem(m); 1209 break; 1210 } 1211 } 1212 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, caddr_t)); 1213 m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len; 1214 error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, 1215 m, BUS_DMA_WRITE|BUS_DMA_NOWAIT); 1216 if (error) { 1217 printf("%s: unable to load Tx buffer, " 1218 "error = %d\n", sc->sc_dev.dv_xname, error); 1219 break; 1220 } 1221 } 1222 #endif /* DP83820 */ 1223 1224 /* 1225 * Ensure we have enough descriptors free to describe 1226 * the packet. Note, we always reserve one descriptor 1227 * at the end of the ring as a termination point, to 1228 * prevent wrap-around. 1229 */ 1230 if (dmamap->dm_nsegs > (sc->sc_txfree - 1)) { 1231 /* 1232 * Not enough free descriptors to transmit this 1233 * packet. We haven't committed anything yet, 1234 * so just unload the DMA map, put the packet 1235 * back on the queue, and punt. Notify the upper 1236 * layer that there are not more slots left. 1237 * 1238 * XXX We could allocate an mbuf and copy, but 1239 * XXX is it worth it? 1240 */ 1241 ifp->if_flags |= IFF_OACTIVE; 1242 bus_dmamap_unload(sc->sc_dmat, dmamap); 1243 #ifndef DP83820 1244 if (m != NULL) 1245 m_freem(m); 1246 #endif 1247 SIP_EVCNT_INCR(&sc->sc_ev_txdstall); 1248 break; 1249 } 1250 1251 IFQ_DEQUEUE(&ifp->if_snd, m0); 1252 #ifndef DP83820 1253 if (m != NULL) { 1254 m_freem(m0); 1255 m0 = m; 1256 } 1257 #endif 1258 1259 /* 1260 * WE ARE NOW COMMITTED TO TRANSMITTING THE PACKET. 1261 */ 1262 1263 /* Sync the DMA map. */ 1264 bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize, 1265 BUS_DMASYNC_PREWRITE); 1266 1267 /* 1268 * Initialize the transmit descriptors. 1269 */ 1270 for (nexttx = lasttx = sc->sc_txnext, seg = 0; 1271 seg < dmamap->dm_nsegs; 1272 seg++, nexttx = SIP_NEXTTX(nexttx)) { 1273 /* 1274 * If this is the first descriptor we're 1275 * enqueueing, don't set the OWN bit just 1276 * yet. That could cause a race condition. 1277 * We'll do it below. 1278 */ 1279 sc->sc_txdescs[nexttx].sipd_bufptr = 1280 htole32(dmamap->dm_segs[seg].ds_addr); 1281 sc->sc_txdescs[nexttx].sipd_cmdsts = 1282 htole32((nexttx == sc->sc_txnext ? 0 : CMDSTS_OWN) | 1283 CMDSTS_MORE | dmamap->dm_segs[seg].ds_len); 1284 #ifdef DP83820 1285 sc->sc_txdescs[nexttx].sipd_extsts = 0; 1286 #endif /* DP83820 */ 1287 lasttx = nexttx; 1288 } 1289 1290 /* Clear the MORE bit on the last segment. */ 1291 sc->sc_txdescs[lasttx].sipd_cmdsts &= htole32(~CMDSTS_MORE); 1292 1293 /* 1294 * If we're in the interrupt delay window, delay the 1295 * interrupt. 1296 */ 1297 if (++sc->sc_txwin >= (SIP_TXQUEUELEN * 2 / 3)) { 1298 SIP_EVCNT_INCR(&sc->sc_ev_txforceintr); 1299 sc->sc_txdescs[lasttx].sipd_cmdsts |= 1300 htole32(CMDSTS_INTR); 1301 sc->sc_txwin = 0; 1302 } 1303 1304 #ifdef DP83820 1305 /* 1306 * If VLANs are enabled and the packet has a VLAN tag, set 1307 * up the descriptor to encapsulate the packet for us. 1308 * 1309 * This apparently has to be on the last descriptor of 1310 * the packet. 1311 */ 1312 if (sc->sc_ethercom.ec_nvlans != 0 && 1313 (mtag = m_tag_find(m0, PACKET_TAG_VLAN, NULL)) != NULL) { 1314 sc->sc_txdescs[lasttx].sipd_extsts |= 1315 htole32(EXTSTS_VPKT | 1316 htons(*mtod(m, int *) & EXTSTS_VTCI)); 1317 } 1318 1319 /* 1320 * If the upper-layer has requested IPv4/TCPv4/UDPv4 1321 * checksumming, set up the descriptor to do this work 1322 * for us. 1323 * 1324 * This apparently has to be on the first descriptor of 1325 * the packet. 1326 * 1327 * Byte-swap constants so the compiler can optimize. 1328 */ 1329 extsts = 0; 1330 if (m0->m_pkthdr.csum_flags & M_CSUM_IPv4) { 1331 KDASSERT(ifp->if_capenable & IFCAP_CSUM_IPv4); 1332 SIP_EVCNT_INCR(&sc->sc_ev_txipsum); 1333 extsts |= htole32(EXTSTS_IPPKT); 1334 } 1335 if (m0->m_pkthdr.csum_flags & M_CSUM_TCPv4) { 1336 KDASSERT(ifp->if_capenable & IFCAP_CSUM_TCPv4); 1337 SIP_EVCNT_INCR(&sc->sc_ev_txtcpsum); 1338 extsts |= htole32(EXTSTS_TCPPKT); 1339 } else if (m0->m_pkthdr.csum_flags & M_CSUM_UDPv4) { 1340 KDASSERT(ifp->if_capenable & IFCAP_CSUM_UDPv4); 1341 SIP_EVCNT_INCR(&sc->sc_ev_txudpsum); 1342 extsts |= htole32(EXTSTS_UDPPKT); 1343 } 1344 sc->sc_txdescs[sc->sc_txnext].sipd_extsts |= extsts; 1345 #endif /* DP83820 */ 1346 1347 /* Sync the descriptors we're using. */ 1348 SIP_CDTXSYNC(sc, sc->sc_txnext, dmamap->dm_nsegs, 1349 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1350 1351 /* 1352 * The entire packet is set up. Give the first descrptor 1353 * to the chip now. 1354 */ 1355 sc->sc_txdescs[sc->sc_txnext].sipd_cmdsts |= 1356 htole32(CMDSTS_OWN); 1357 SIP_CDTXSYNC(sc, sc->sc_txnext, 1, 1358 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1359 1360 /* 1361 * Store a pointer to the packet so we can free it later, 1362 * and remember what txdirty will be once the packet is 1363 * done. 1364 */ 1365 txs->txs_mbuf = m0; 1366 txs->txs_firstdesc = sc->sc_txnext; 1367 txs->txs_lastdesc = lasttx; 1368 1369 /* Advance the tx pointer. */ 1370 sc->sc_txfree -= dmamap->dm_nsegs; 1371 sc->sc_txnext = nexttx; 1372 1373 SIMPLEQ_REMOVE_HEAD(&sc->sc_txfreeq, txs_q); 1374 SIMPLEQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q); 1375 1376 #if NBPFILTER > 0 1377 /* 1378 * Pass the packet to any BPF listeners. 1379 */ 1380 if (ifp->if_bpf) 1381 bpf_mtap(ifp->if_bpf, m0); 1382 #endif /* NBPFILTER > 0 */ 1383 } 1384 1385 if (txs == NULL || sc->sc_txfree == 0) { 1386 /* No more slots left; notify upper layer. */ 1387 ifp->if_flags |= IFF_OACTIVE; 1388 } 1389 1390 if (sc->sc_txfree != ofree) { 1391 /* 1392 * Start the transmit process. Note, the manual says 1393 * that if there are no pending transmissions in the 1394 * chip's internal queue (indicated by TXE being clear), 1395 * then the driver software must set the TXDP to the 1396 * first descriptor to be transmitted. However, if we 1397 * do this, it causes serious performance degredation on 1398 * the DP83820 under load, not setting TXDP doesn't seem 1399 * to adversely affect the SiS 900 or DP83815. 1400 * 1401 * Well, I guess it wouldn't be the first time a manual 1402 * has lied -- and they could be speaking of the NULL- 1403 * terminated descriptor list case, rather than OWN- 1404 * terminated rings. 1405 */ 1406 #if 0 1407 if ((bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_CR) & 1408 CR_TXE) == 0) { 1409 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXDP, 1410 SIP_CDTXADDR(sc, firsttx)); 1411 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CR, CR_TXE); 1412 } 1413 #else 1414 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CR, CR_TXE); 1415 #endif 1416 1417 /* Set a watchdog timer in case the chip flakes out. */ 1418 ifp->if_timer = 5; 1419 } 1420 } 1421 1422 /* 1423 * sip_watchdog: [ifnet interface function] 1424 * 1425 * Watchdog timer handler. 1426 */ 1427 void 1428 SIP_DECL(watchdog)(struct ifnet *ifp) 1429 { 1430 struct sip_softc *sc = ifp->if_softc; 1431 1432 /* 1433 * The chip seems to ignore the CMDSTS_INTR bit sometimes! 1434 * If we get a timeout, try and sweep up transmit descriptors. 1435 * If we manage to sweep them all up, ignore the lack of 1436 * interrupt. 1437 */ 1438 SIP_DECL(txintr)(sc); 1439 1440 if (sc->sc_txfree != SIP_NTXDESC) { 1441 printf("%s: device timeout\n", sc->sc_dev.dv_xname); 1442 ifp->if_oerrors++; 1443 1444 /* Reset the interface. */ 1445 (void) SIP_DECL(init)(ifp); 1446 } else if (ifp->if_flags & IFF_DEBUG) 1447 printf("%s: recovered from device timeout\n", 1448 sc->sc_dev.dv_xname); 1449 1450 /* Try to get more packets going. */ 1451 SIP_DECL(start)(ifp); 1452 } 1453 1454 /* 1455 * sip_ioctl: [ifnet interface function] 1456 * 1457 * Handle control requests from the operator. 1458 */ 1459 int 1460 SIP_DECL(ioctl)(struct ifnet *ifp, u_long cmd, caddr_t data) 1461 { 1462 struct sip_softc *sc = ifp->if_softc; 1463 struct ifreq *ifr = (struct ifreq *)data; 1464 int s, error; 1465 1466 s = splnet(); 1467 1468 switch (cmd) { 1469 case SIOCSIFMEDIA: 1470 case SIOCGIFMEDIA: 1471 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 1472 break; 1473 1474 default: 1475 error = ether_ioctl(ifp, cmd, data); 1476 if (error == ENETRESET) { 1477 /* 1478 * Multicast list has changed; set the hardware filter 1479 * accordingly. 1480 */ 1481 (*sc->sc_model->sip_variant->sipv_set_filter)(sc); 1482 error = 0; 1483 } 1484 break; 1485 } 1486 1487 /* Try to get more packets going. */ 1488 SIP_DECL(start)(ifp); 1489 1490 splx(s); 1491 return (error); 1492 } 1493 1494 /* 1495 * sip_intr: 1496 * 1497 * Interrupt service routine. 1498 */ 1499 int 1500 SIP_DECL(intr)(void *arg) 1501 { 1502 struct sip_softc *sc = arg; 1503 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1504 u_int32_t isr; 1505 int handled = 0; 1506 1507 for (;;) { 1508 /* Reading clears interrupt. */ 1509 isr = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_ISR); 1510 if ((isr & sc->sc_imr) == 0) 1511 break; 1512 1513 #if NRND > 0 1514 if (RND_ENABLED(&sc->rnd_source)) 1515 rnd_add_uint32(&sc->rnd_source, isr); 1516 #endif 1517 1518 handled = 1; 1519 1520 if (isr & (ISR_RXORN|ISR_RXIDLE|ISR_RXDESC)) { 1521 SIP_EVCNT_INCR(&sc->sc_ev_rxintr); 1522 1523 /* Grab any new packets. */ 1524 SIP_DECL(rxintr)(sc); 1525 1526 if (isr & ISR_RXORN) { 1527 printf("%s: receive FIFO overrun\n", 1528 sc->sc_dev.dv_xname); 1529 1530 /* XXX adjust rx_drain_thresh? */ 1531 } 1532 1533 if (isr & ISR_RXIDLE) { 1534 printf("%s: receive ring overrun\n", 1535 sc->sc_dev.dv_xname); 1536 1537 /* Get the receive process going again. */ 1538 bus_space_write_4(sc->sc_st, sc->sc_sh, 1539 SIP_RXDP, SIP_CDRXADDR(sc, sc->sc_rxptr)); 1540 bus_space_write_4(sc->sc_st, sc->sc_sh, 1541 SIP_CR, CR_RXE); 1542 } 1543 } 1544 1545 if (isr & (ISR_TXURN|ISR_TXDESC|ISR_TXIDLE)) { 1546 #ifdef SIP_EVENT_COUNTERS 1547 if (isr & ISR_TXDESC) 1548 SIP_EVCNT_INCR(&sc->sc_ev_txdintr); 1549 else if (isr & ISR_TXIDLE) 1550 SIP_EVCNT_INCR(&sc->sc_ev_txiintr); 1551 #endif 1552 1553 /* Sweep up transmit descriptors. */ 1554 SIP_DECL(txintr)(sc); 1555 1556 if (isr & ISR_TXURN) { 1557 u_int32_t thresh; 1558 1559 printf("%s: transmit FIFO underrun", 1560 sc->sc_dev.dv_xname); 1561 1562 thresh = sc->sc_tx_drain_thresh + 1; 1563 if (thresh <= TXCFG_DRTH && 1564 (thresh * 32) <= (SIP_TXFIFO_SIZE - 1565 (sc->sc_tx_fill_thresh * 32))) { 1566 printf("; increasing Tx drain " 1567 "threshold to %u bytes\n", 1568 thresh * 32); 1569 sc->sc_tx_drain_thresh = thresh; 1570 (void) SIP_DECL(init)(ifp); 1571 } else { 1572 (void) SIP_DECL(init)(ifp); 1573 printf("\n"); 1574 } 1575 } 1576 } 1577 1578 #if !defined(DP83820) 1579 if (sc->sc_imr & (ISR_PAUSE_END|ISR_PAUSE_ST)) { 1580 if (isr & ISR_PAUSE_ST) { 1581 sc->sc_flags |= SIPF_PAUSED; 1582 ifp->if_flags |= IFF_OACTIVE; 1583 } 1584 if (isr & ISR_PAUSE_END) { 1585 sc->sc_flags &= ~SIPF_PAUSED; 1586 ifp->if_flags &= ~IFF_OACTIVE; 1587 } 1588 } 1589 #endif /* ! DP83820 */ 1590 1591 if (isr & ISR_HIBERR) { 1592 int want_init = 0; 1593 1594 SIP_EVCNT_INCR(&sc->sc_ev_hiberr); 1595 1596 #define PRINTERR(bit, str) \ 1597 do { \ 1598 if ((isr & (bit)) != 0) { \ 1599 if ((ifp->if_flags & IFF_DEBUG) != 0) \ 1600 printf("%s: %s\n", \ 1601 sc->sc_dev.dv_xname, str); \ 1602 want_init = 1; \ 1603 } \ 1604 } while (/*CONSTCOND*/0) 1605 1606 PRINTERR(ISR_DPERR, "parity error"); 1607 PRINTERR(ISR_SSERR, "system error"); 1608 PRINTERR(ISR_RMABT, "master abort"); 1609 PRINTERR(ISR_RTABT, "target abort"); 1610 PRINTERR(ISR_RXSOVR, "receive status FIFO overrun"); 1611 /* 1612 * Ignore: 1613 * Tx reset complete 1614 * Rx reset complete 1615 */ 1616 if (want_init) 1617 (void) SIP_DECL(init)(ifp); 1618 #undef PRINTERR 1619 } 1620 } 1621 1622 /* Try to get more packets going. */ 1623 SIP_DECL(start)(ifp); 1624 1625 return (handled); 1626 } 1627 1628 /* 1629 * sip_txintr: 1630 * 1631 * Helper; handle transmit interrupts. 1632 */ 1633 void 1634 SIP_DECL(txintr)(struct sip_softc *sc) 1635 { 1636 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1637 struct sip_txsoft *txs; 1638 u_int32_t cmdsts; 1639 1640 if ((sc->sc_flags & SIPF_PAUSED) == 0) 1641 ifp->if_flags &= ~IFF_OACTIVE; 1642 1643 /* 1644 * Go through our Tx list and free mbufs for those 1645 * frames which have been transmitted. 1646 */ 1647 while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 1648 SIP_CDTXSYNC(sc, txs->txs_firstdesc, txs->txs_dmamap->dm_nsegs, 1649 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1650 1651 cmdsts = le32toh(sc->sc_txdescs[txs->txs_lastdesc].sipd_cmdsts); 1652 if (cmdsts & CMDSTS_OWN) 1653 break; 1654 1655 SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 1656 1657 sc->sc_txfree += txs->txs_dmamap->dm_nsegs; 1658 1659 bus_dmamap_sync(sc->sc_dmat, txs->txs_dmamap, 1660 0, txs->txs_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1661 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 1662 m_freem(txs->txs_mbuf); 1663 txs->txs_mbuf = NULL; 1664 1665 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 1666 1667 /* 1668 * Check for errors and collisions. 1669 */ 1670 if (cmdsts & 1671 (CMDSTS_Tx_TXA|CMDSTS_Tx_TFU|CMDSTS_Tx_ED|CMDSTS_Tx_EC)) { 1672 ifp->if_oerrors++; 1673 if (cmdsts & CMDSTS_Tx_EC) 1674 ifp->if_collisions += 16; 1675 if (ifp->if_flags & IFF_DEBUG) { 1676 if (cmdsts & CMDSTS_Tx_ED) 1677 printf("%s: excessive deferral\n", 1678 sc->sc_dev.dv_xname); 1679 if (cmdsts & CMDSTS_Tx_EC) 1680 printf("%s: excessive collisions\n", 1681 sc->sc_dev.dv_xname); 1682 } 1683 } else { 1684 /* Packet was transmitted successfully. */ 1685 ifp->if_opackets++; 1686 ifp->if_collisions += CMDSTS_COLLISIONS(cmdsts); 1687 } 1688 } 1689 1690 /* 1691 * If there are no more pending transmissions, cancel the watchdog 1692 * timer. 1693 */ 1694 if (txs == NULL) { 1695 ifp->if_timer = 0; 1696 sc->sc_txwin = 0; 1697 } 1698 } 1699 1700 #if defined(DP83820) 1701 /* 1702 * sip_rxintr: 1703 * 1704 * Helper; handle receive interrupts. 1705 */ 1706 void 1707 SIP_DECL(rxintr)(struct sip_softc *sc) 1708 { 1709 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1710 struct sip_rxsoft *rxs; 1711 struct mbuf *m, *tailm; 1712 u_int32_t cmdsts, extsts; 1713 int i, len; 1714 1715 for (i = sc->sc_rxptr;; i = SIP_NEXTRX(i)) { 1716 rxs = &sc->sc_rxsoft[i]; 1717 1718 SIP_CDRXSYNC(sc, i, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1719 1720 cmdsts = le32toh(sc->sc_rxdescs[i].sipd_cmdsts); 1721 extsts = le32toh(sc->sc_rxdescs[i].sipd_extsts); 1722 1723 /* 1724 * NOTE: OWN is set if owned by _consumer_. We're the 1725 * consumer of the receive ring, so if the bit is clear, 1726 * we have processed all of the packets. 1727 */ 1728 if ((cmdsts & CMDSTS_OWN) == 0) { 1729 /* 1730 * We have processed all of the receive buffers. 1731 */ 1732 break; 1733 } 1734 1735 if (__predict_false(sc->sc_rxdiscard)) { 1736 SIP_INIT_RXDESC(sc, i); 1737 if ((cmdsts & CMDSTS_MORE) == 0) { 1738 /* Reset our state. */ 1739 sc->sc_rxdiscard = 0; 1740 } 1741 continue; 1742 } 1743 1744 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1745 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1746 1747 m = rxs->rxs_mbuf; 1748 1749 /* 1750 * Add a new receive buffer to the ring. 1751 */ 1752 if (SIP_DECL(add_rxbuf)(sc, i) != 0) { 1753 /* 1754 * Failed, throw away what we've done so 1755 * far, and discard the rest of the packet. 1756 */ 1757 ifp->if_ierrors++; 1758 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1759 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 1760 SIP_INIT_RXDESC(sc, i); 1761 if (cmdsts & CMDSTS_MORE) 1762 sc->sc_rxdiscard = 1; 1763 if (sc->sc_rxhead != NULL) 1764 m_freem(sc->sc_rxhead); 1765 SIP_RXCHAIN_RESET(sc); 1766 continue; 1767 } 1768 1769 SIP_RXCHAIN_LINK(sc, m); 1770 1771 /* 1772 * If this is not the end of the packet, keep 1773 * looking. 1774 */ 1775 if (cmdsts & CMDSTS_MORE) { 1776 sc->sc_rxlen += m->m_len; 1777 continue; 1778 } 1779 1780 /* 1781 * Okay, we have the entire packet now... 1782 */ 1783 *sc->sc_rxtailp = NULL; 1784 m = sc->sc_rxhead; 1785 tailm = sc->sc_rxtail; 1786 1787 SIP_RXCHAIN_RESET(sc); 1788 1789 /* 1790 * If an error occurred, update stats and drop the packet. 1791 */ 1792 if (cmdsts & (CMDSTS_Rx_RXA|CMDSTS_Rx_RUNT| 1793 CMDSTS_Rx_ISE|CMDSTS_Rx_CRCE|CMDSTS_Rx_FAE)) { 1794 ifp->if_ierrors++; 1795 if ((cmdsts & CMDSTS_Rx_RXA) != 0 && 1796 (cmdsts & CMDSTS_Rx_RXO) == 0) { 1797 /* Receive overrun handled elsewhere. */ 1798 printf("%s: receive descriptor error\n", 1799 sc->sc_dev.dv_xname); 1800 } 1801 #define PRINTERR(bit, str) \ 1802 if ((ifp->if_flags & IFF_DEBUG) != 0 && \ 1803 (cmdsts & (bit)) != 0) \ 1804 printf("%s: %s\n", sc->sc_dev.dv_xname, str) 1805 PRINTERR(CMDSTS_Rx_RUNT, "runt packet"); 1806 PRINTERR(CMDSTS_Rx_ISE, "invalid symbol error"); 1807 PRINTERR(CMDSTS_Rx_CRCE, "CRC error"); 1808 PRINTERR(CMDSTS_Rx_FAE, "frame alignment error"); 1809 #undef PRINTERR 1810 m_freem(m); 1811 continue; 1812 } 1813 1814 /* 1815 * No errors. 1816 * 1817 * Note, the DP83820 includes the CRC with 1818 * every packet. 1819 */ 1820 len = CMDSTS_SIZE(cmdsts); 1821 tailm->m_len = len - sc->sc_rxlen; 1822 1823 /* 1824 * If the packet is small enough to fit in a 1825 * single header mbuf, allocate one and copy 1826 * the data into it. This greatly reduces 1827 * memory consumption when we receive lots 1828 * of small packets. 1829 */ 1830 if (SIP_DECL(copy_small) != 0 && len <= (MHLEN - 2)) { 1831 struct mbuf *nm; 1832 MGETHDR(nm, M_DONTWAIT, MT_DATA); 1833 if (nm == NULL) { 1834 ifp->if_ierrors++; 1835 m_freem(m); 1836 continue; 1837 } 1838 nm->m_data += 2; 1839 nm->m_pkthdr.len = nm->m_len = len; 1840 m_copydata(m, 0, len, mtod(nm, caddr_t)); 1841 m_freem(m); 1842 m = nm; 1843 } 1844 #ifndef __NO_STRICT_ALIGNMENT 1845 else { 1846 /* 1847 * The DP83820's receive buffers must be 4-byte 1848 * aligned. But this means that the data after 1849 * the Ethernet header is misaligned. To compensate, 1850 * we have artificially shortened the buffer size 1851 * in the descriptor, and we do an overlapping copy 1852 * of the data two bytes further in (in the first 1853 * buffer of the chain only). 1854 */ 1855 memmove(mtod(m, caddr_t) + 2, mtod(m, caddr_t), 1856 m->m_len); 1857 m->m_data += 2; 1858 } 1859 #endif /* ! __NO_STRICT_ALIGNMENT */ 1860 1861 /* 1862 * If VLANs are enabled, VLAN packets have been unwrapped 1863 * for us. Associate the tag with the packet. 1864 */ 1865 if (sc->sc_ethercom.ec_nvlans != 0 && 1866 (extsts & EXTSTS_VPKT) != 0) { 1867 struct m_tag *vtag; 1868 1869 vtag = m_tag_get(PACKET_TAG_VLAN, sizeof(u_int), 1870 M_NOWAIT); 1871 if (vtag == NULL) { 1872 ifp->if_ierrors++; 1873 printf("%s: unable to allocate VLAN tag\n", 1874 sc->sc_dev.dv_xname); 1875 m_freem(m); 1876 continue; 1877 } 1878 1879 *(u_int *)(vtag + 1) = ntohs(extsts & EXTSTS_VTCI); 1880 } 1881 1882 /* 1883 * Set the incoming checksum information for the 1884 * packet. 1885 */ 1886 if ((extsts & EXTSTS_IPPKT) != 0) { 1887 SIP_EVCNT_INCR(&sc->sc_ev_rxipsum); 1888 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1889 if (extsts & EXTSTS_Rx_IPERR) 1890 m->m_pkthdr.csum_flags |= M_CSUM_IPv4_BAD; 1891 if (extsts & EXTSTS_TCPPKT) { 1892 SIP_EVCNT_INCR(&sc->sc_ev_rxtcpsum); 1893 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1894 if (extsts & EXTSTS_Rx_TCPERR) 1895 m->m_pkthdr.csum_flags |= 1896 M_CSUM_TCP_UDP_BAD; 1897 } else if (extsts & EXTSTS_UDPPKT) { 1898 SIP_EVCNT_INCR(&sc->sc_ev_rxudpsum); 1899 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1900 if (extsts & EXTSTS_Rx_UDPERR) 1901 m->m_pkthdr.csum_flags |= 1902 M_CSUM_TCP_UDP_BAD; 1903 } 1904 } 1905 1906 ifp->if_ipackets++; 1907 m->m_flags |= M_HASFCS; 1908 m->m_pkthdr.rcvif = ifp; 1909 m->m_pkthdr.len = len; 1910 1911 #if NBPFILTER > 0 1912 /* 1913 * Pass this up to any BPF listeners, but only 1914 * pass if up the stack if it's for us. 1915 */ 1916 if (ifp->if_bpf) 1917 bpf_mtap(ifp->if_bpf, m); 1918 #endif /* NBPFILTER > 0 */ 1919 1920 /* Pass it on. */ 1921 (*ifp->if_input)(ifp, m); 1922 } 1923 1924 /* Update the receive pointer. */ 1925 sc->sc_rxptr = i; 1926 } 1927 #else /* ! DP83820 */ 1928 /* 1929 * sip_rxintr: 1930 * 1931 * Helper; handle receive interrupts. 1932 */ 1933 void 1934 SIP_DECL(rxintr)(struct sip_softc *sc) 1935 { 1936 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1937 struct sip_rxsoft *rxs; 1938 struct mbuf *m; 1939 u_int32_t cmdsts; 1940 int i, len; 1941 1942 for (i = sc->sc_rxptr;; i = SIP_NEXTRX(i)) { 1943 rxs = &sc->sc_rxsoft[i]; 1944 1945 SIP_CDRXSYNC(sc, i, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1946 1947 cmdsts = le32toh(sc->sc_rxdescs[i].sipd_cmdsts); 1948 1949 /* 1950 * NOTE: OWN is set if owned by _consumer_. We're the 1951 * consumer of the receive ring, so if the bit is clear, 1952 * we have processed all of the packets. 1953 */ 1954 if ((cmdsts & CMDSTS_OWN) == 0) { 1955 /* 1956 * We have processed all of the receive buffers. 1957 */ 1958 break; 1959 } 1960 1961 /* 1962 * If any collisions were seen on the wire, count one. 1963 */ 1964 if (cmdsts & CMDSTS_Rx_COL) 1965 ifp->if_collisions++; 1966 1967 /* 1968 * If an error occurred, update stats, clear the status 1969 * word, and leave the packet buffer in place. It will 1970 * simply be reused the next time the ring comes around. 1971 */ 1972 if (cmdsts & (CMDSTS_Rx_RXA|CMDSTS_Rx_RUNT| 1973 CMDSTS_Rx_ISE|CMDSTS_Rx_CRCE|CMDSTS_Rx_FAE)) { 1974 ifp->if_ierrors++; 1975 if ((cmdsts & CMDSTS_Rx_RXA) != 0 && 1976 (cmdsts & CMDSTS_Rx_RXO) == 0) { 1977 /* Receive overrun handled elsewhere. */ 1978 printf("%s: receive descriptor error\n", 1979 sc->sc_dev.dv_xname); 1980 } 1981 #define PRINTERR(bit, str) \ 1982 if ((ifp->if_flags & IFF_DEBUG) != 0 && \ 1983 (cmdsts & (bit)) != 0) \ 1984 printf("%s: %s\n", sc->sc_dev.dv_xname, str) 1985 PRINTERR(CMDSTS_Rx_RUNT, "runt packet"); 1986 PRINTERR(CMDSTS_Rx_ISE, "invalid symbol error"); 1987 PRINTERR(CMDSTS_Rx_CRCE, "CRC error"); 1988 PRINTERR(CMDSTS_Rx_FAE, "frame alignment error"); 1989 #undef PRINTERR 1990 SIP_INIT_RXDESC(sc, i); 1991 continue; 1992 } 1993 1994 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1995 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1996 1997 /* 1998 * No errors; receive the packet. Note, the SiS 900 1999 * includes the CRC with every packet. 2000 */ 2001 len = CMDSTS_SIZE(cmdsts); 2002 2003 #ifdef __NO_STRICT_ALIGNMENT 2004 /* 2005 * If the packet is small enough to fit in a 2006 * single header mbuf, allocate one and copy 2007 * the data into it. This greatly reduces 2008 * memory consumption when we receive lots 2009 * of small packets. 2010 * 2011 * Otherwise, we add a new buffer to the receive 2012 * chain. If this fails, we drop the packet and 2013 * recycle the old buffer. 2014 */ 2015 if (SIP_DECL(copy_small) != 0 && len <= MHLEN) { 2016 MGETHDR(m, M_DONTWAIT, MT_DATA); 2017 if (m == NULL) 2018 goto dropit; 2019 memcpy(mtod(m, caddr_t), 2020 mtod(rxs->rxs_mbuf, caddr_t), len); 2021 SIP_INIT_RXDESC(sc, i); 2022 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2023 rxs->rxs_dmamap->dm_mapsize, 2024 BUS_DMASYNC_PREREAD); 2025 } else { 2026 m = rxs->rxs_mbuf; 2027 if (SIP_DECL(add_rxbuf)(sc, i) != 0) { 2028 dropit: 2029 ifp->if_ierrors++; 2030 SIP_INIT_RXDESC(sc, i); 2031 bus_dmamap_sync(sc->sc_dmat, 2032 rxs->rxs_dmamap, 0, 2033 rxs->rxs_dmamap->dm_mapsize, 2034 BUS_DMASYNC_PREREAD); 2035 continue; 2036 } 2037 } 2038 #else 2039 /* 2040 * The SiS 900's receive buffers must be 4-byte aligned. 2041 * But this means that the data after the Ethernet header 2042 * is misaligned. We must allocate a new buffer and 2043 * copy the data, shifted forward 2 bytes. 2044 */ 2045 MGETHDR(m, M_DONTWAIT, MT_DATA); 2046 if (m == NULL) { 2047 dropit: 2048 ifp->if_ierrors++; 2049 SIP_INIT_RXDESC(sc, i); 2050 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2051 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 2052 continue; 2053 } 2054 if (len > (MHLEN - 2)) { 2055 MCLGET(m, M_DONTWAIT); 2056 if ((m->m_flags & M_EXT) == 0) { 2057 m_freem(m); 2058 goto dropit; 2059 } 2060 } 2061 m->m_data += 2; 2062 2063 /* 2064 * Note that we use clusters for incoming frames, so the 2065 * buffer is virtually contiguous. 2066 */ 2067 memcpy(mtod(m, caddr_t), mtod(rxs->rxs_mbuf, caddr_t), len); 2068 2069 /* Allow the receive descriptor to continue using its mbuf. */ 2070 SIP_INIT_RXDESC(sc, i); 2071 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2072 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 2073 #endif /* __NO_STRICT_ALIGNMENT */ 2074 2075 ifp->if_ipackets++; 2076 m->m_flags |= M_HASFCS; 2077 m->m_pkthdr.rcvif = ifp; 2078 m->m_pkthdr.len = m->m_len = len; 2079 2080 #if NBPFILTER > 0 2081 /* 2082 * Pass this up to any BPF listeners, but only 2083 * pass if up the stack if it's for us. 2084 */ 2085 if (ifp->if_bpf) 2086 bpf_mtap(ifp->if_bpf, m); 2087 #endif /* NBPFILTER > 0 */ 2088 2089 /* Pass it on. */ 2090 (*ifp->if_input)(ifp, m); 2091 } 2092 2093 /* Update the receive pointer. */ 2094 sc->sc_rxptr = i; 2095 } 2096 #endif /* DP83820 */ 2097 2098 /* 2099 * sip_tick: 2100 * 2101 * One second timer, used to tick the MII. 2102 */ 2103 void 2104 SIP_DECL(tick)(void *arg) 2105 { 2106 struct sip_softc *sc = arg; 2107 int s; 2108 2109 s = splnet(); 2110 mii_tick(&sc->sc_mii); 2111 splx(s); 2112 2113 callout_reset(&sc->sc_tick_ch, hz, SIP_DECL(tick), sc); 2114 } 2115 2116 /* 2117 * sip_reset: 2118 * 2119 * Perform a soft reset on the SiS 900. 2120 */ 2121 void 2122 SIP_DECL(reset)(struct sip_softc *sc) 2123 { 2124 bus_space_tag_t st = sc->sc_st; 2125 bus_space_handle_t sh = sc->sc_sh; 2126 int i; 2127 2128 bus_space_write_4(st, sh, SIP_IER, 0); 2129 bus_space_write_4(st, sh, SIP_IMR, 0); 2130 bus_space_write_4(st, sh, SIP_RFCR, 0); 2131 bus_space_write_4(st, sh, SIP_CR, CR_RST); 2132 2133 for (i = 0; i < SIP_TIMEOUT; i++) { 2134 if ((bus_space_read_4(st, sh, SIP_CR) & CR_RST) == 0) 2135 break; 2136 delay(2); 2137 } 2138 2139 if (i == SIP_TIMEOUT) 2140 printf("%s: reset failed to complete\n", sc->sc_dev.dv_xname); 2141 2142 delay(1000); 2143 2144 #ifdef DP83820 2145 /* 2146 * Set the general purpose I/O bits. Do it here in case we 2147 * need to have GPIO set up to talk to the media interface. 2148 */ 2149 bus_space_write_4(st, sh, SIP_GPIOR, sc->sc_gpior); 2150 delay(1000); 2151 #endif /* DP83820 */ 2152 } 2153 2154 /* 2155 * sip_init: [ ifnet interface function ] 2156 * 2157 * Initialize the interface. Must be called at splnet(). 2158 */ 2159 int 2160 SIP_DECL(init)(struct ifnet *ifp) 2161 { 2162 struct sip_softc *sc = ifp->if_softc; 2163 bus_space_tag_t st = sc->sc_st; 2164 bus_space_handle_t sh = sc->sc_sh; 2165 struct sip_txsoft *txs; 2166 struct sip_rxsoft *rxs; 2167 struct sip_desc *sipd; 2168 u_int32_t reg; 2169 int i, error = 0; 2170 2171 /* 2172 * Cancel any pending I/O. 2173 */ 2174 SIP_DECL(stop)(ifp, 0); 2175 2176 /* 2177 * Reset the chip to a known state. 2178 */ 2179 SIP_DECL(reset)(sc); 2180 2181 #if !defined(DP83820) 2182 if (SIP_CHIP_MODEL(sc, PCI_VENDOR_NS, PCI_PRODUCT_NS_DP83815)) { 2183 /* 2184 * DP83815 manual, page 78: 2185 * 4.4 Recommended Registers Configuration 2186 * For optimum performance of the DP83815, version noted 2187 * as DP83815CVNG (SRR = 203h), the listed register 2188 * modifications must be followed in sequence... 2189 * 2190 * It's not clear if this should be 302h or 203h because that 2191 * chip name is listed as SRR 302h in the description of the 2192 * SRR register. However, my revision 302h DP83815 on the 2193 * Netgear FA311 purchased in 02/2001 needs these settings 2194 * to avoid tons of errors in AcceptPerfectMatch (non- 2195 * IFF_PROMISC) mode. I do not know if other revisions need 2196 * this set or not. [briggs -- 09 March 2001] 2197 * 2198 * Note that only the low-order 12 bits of 0xe4 are documented 2199 * and that this sets reserved bits in that register. 2200 */ 2201 reg = bus_space_read_4(st, sh, SIP_NS_SRR); 2202 if (reg == 0x302) { 2203 bus_space_write_4(st, sh, 0x00cc, 0x0001); 2204 bus_space_write_4(st, sh, 0x00e4, 0x189C); 2205 bus_space_write_4(st, sh, 0x00fc, 0x0000); 2206 bus_space_write_4(st, sh, 0x00f4, 0x5040); 2207 bus_space_write_4(st, sh, 0x00f8, 0x008c); 2208 } 2209 } 2210 #endif /* ! DP83820 */ 2211 2212 /* 2213 * Initialize the transmit descriptor ring. 2214 */ 2215 for (i = 0; i < SIP_NTXDESC; i++) { 2216 sipd = &sc->sc_txdescs[i]; 2217 memset(sipd, 0, sizeof(struct sip_desc)); 2218 sipd->sipd_link = htole32(SIP_CDTXADDR(sc, SIP_NEXTTX(i))); 2219 } 2220 SIP_CDTXSYNC(sc, 0, SIP_NTXDESC, 2221 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 2222 sc->sc_txfree = SIP_NTXDESC; 2223 sc->sc_txnext = 0; 2224 sc->sc_txwin = 0; 2225 2226 /* 2227 * Initialize the transmit job descriptors. 2228 */ 2229 SIMPLEQ_INIT(&sc->sc_txfreeq); 2230 SIMPLEQ_INIT(&sc->sc_txdirtyq); 2231 for (i = 0; i < SIP_TXQUEUELEN; i++) { 2232 txs = &sc->sc_txsoft[i]; 2233 txs->txs_mbuf = NULL; 2234 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 2235 } 2236 2237 /* 2238 * Initialize the receive descriptor and receive job 2239 * descriptor rings. 2240 */ 2241 for (i = 0; i < SIP_NRXDESC; i++) { 2242 rxs = &sc->sc_rxsoft[i]; 2243 if (rxs->rxs_mbuf == NULL) { 2244 if ((error = SIP_DECL(add_rxbuf)(sc, i)) != 0) { 2245 printf("%s: unable to allocate or map rx " 2246 "buffer %d, error = %d\n", 2247 sc->sc_dev.dv_xname, i, error); 2248 /* 2249 * XXX Should attempt to run with fewer receive 2250 * XXX buffers instead of just failing. 2251 */ 2252 SIP_DECL(rxdrain)(sc); 2253 goto out; 2254 } 2255 } else 2256 SIP_INIT_RXDESC(sc, i); 2257 } 2258 sc->sc_rxptr = 0; 2259 #ifdef DP83820 2260 sc->sc_rxdiscard = 0; 2261 SIP_RXCHAIN_RESET(sc); 2262 #endif /* DP83820 */ 2263 2264 /* 2265 * Set the configuration register; it's already initialized 2266 * in sip_attach(). 2267 */ 2268 bus_space_write_4(st, sh, SIP_CFG, sc->sc_cfg); 2269 2270 /* 2271 * Initialize the prototype TXCFG register. 2272 */ 2273 #if defined(DP83820) 2274 sc->sc_txcfg = TXCFG_MXDMA_512; 2275 sc->sc_rxcfg = RXCFG_MXDMA_512; 2276 #else 2277 if ((SIP_SIS900_REV(sc, SIS_REV_635) || 2278 SIP_SIS900_REV(sc, SIS_REV_900B)) && 2279 (bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_CFG) & CFG_EDBMASTEN)) { 2280 sc->sc_txcfg = TXCFG_MXDMA_64; 2281 sc->sc_rxcfg = RXCFG_MXDMA_64; 2282 } else { 2283 sc->sc_txcfg = TXCFG_MXDMA_512; 2284 sc->sc_rxcfg = RXCFG_MXDMA_512; 2285 } 2286 #endif /* DP83820 */ 2287 2288 sc->sc_txcfg |= TXCFG_ATP | 2289 (sc->sc_tx_fill_thresh << TXCFG_FLTH_SHIFT) | 2290 sc->sc_tx_drain_thresh; 2291 bus_space_write_4(st, sh, SIP_TXCFG, sc->sc_txcfg); 2292 2293 /* 2294 * Initialize the receive drain threshold if we have never 2295 * done so. 2296 */ 2297 if (sc->sc_rx_drain_thresh == 0) { 2298 /* 2299 * XXX This value should be tuned. This is set to the 2300 * maximum of 248 bytes, and we may be able to improve 2301 * performance by decreasing it (although we should never 2302 * set this value lower than 2; 14 bytes are required to 2303 * filter the packet). 2304 */ 2305 sc->sc_rx_drain_thresh = RXCFG_DRTH >> RXCFG_DRTH_SHIFT; 2306 } 2307 2308 /* 2309 * Initialize the prototype RXCFG register. 2310 */ 2311 sc->sc_rxcfg |= (sc->sc_rx_drain_thresh << RXCFG_DRTH_SHIFT); 2312 bus_space_write_4(st, sh, SIP_RXCFG, sc->sc_rxcfg); 2313 2314 #ifdef DP83820 2315 /* 2316 * Initialize the VLAN/IP receive control register. 2317 * We enable checksum computation on all incoming 2318 * packets, and do not reject packets w/ bad checksums. 2319 */ 2320 reg = 0; 2321 if (ifp->if_capenable & 2322 (IFCAP_CSUM_IPv4|IFCAP_CSUM_TCPv4|IFCAP_CSUM_UDPv4)) 2323 reg |= VRCR_IPEN; 2324 if (sc->sc_ethercom.ec_nvlans != 0) 2325 reg |= VRCR_VTDEN|VRCR_VTREN; 2326 bus_space_write_4(st, sh, SIP_VRCR, reg); 2327 2328 /* 2329 * Initialize the VLAN/IP transmit control register. 2330 * We enable outgoing checksum computation on a 2331 * per-packet basis. 2332 */ 2333 reg = 0; 2334 if (ifp->if_capenable & 2335 (IFCAP_CSUM_IPv4|IFCAP_CSUM_TCPv4|IFCAP_CSUM_UDPv4)) 2336 reg |= VTCR_PPCHK; 2337 if (sc->sc_ethercom.ec_nvlans != 0) 2338 reg |= VTCR_VPPTI; 2339 bus_space_write_4(st, sh, SIP_VTCR, reg); 2340 2341 /* 2342 * If we're using VLANs, initialize the VLAN data register. 2343 * To understand why we bswap the VLAN Ethertype, see section 2344 * 4.2.36 of the DP83820 manual. 2345 */ 2346 if (sc->sc_ethercom.ec_nvlans != 0) 2347 bus_space_write_4(st, sh, SIP_VDR, bswap16(ETHERTYPE_VLAN)); 2348 #endif /* DP83820 */ 2349 2350 /* 2351 * Give the transmit and receive rings to the chip. 2352 */ 2353 bus_space_write_4(st, sh, SIP_TXDP, SIP_CDTXADDR(sc, sc->sc_txnext)); 2354 bus_space_write_4(st, sh, SIP_RXDP, SIP_CDRXADDR(sc, sc->sc_rxptr)); 2355 2356 /* 2357 * Initialize the interrupt mask. 2358 */ 2359 sc->sc_imr = ISR_DPERR|ISR_SSERR|ISR_RMABT|ISR_RTABT|ISR_RXSOVR| 2360 ISR_TXURN|ISR_TXDESC|ISR_TXIDLE|ISR_RXORN|ISR_RXIDLE|ISR_RXDESC; 2361 bus_space_write_4(st, sh, SIP_IMR, sc->sc_imr); 2362 2363 /* Set up the receive filter. */ 2364 (*sc->sc_model->sip_variant->sipv_set_filter)(sc); 2365 2366 /* 2367 * Set the current media. Do this after initializing the prototype 2368 * IMR, since sip_mii_statchg() modifies the IMR for 802.3x flow 2369 * control. 2370 */ 2371 mii_mediachg(&sc->sc_mii); 2372 2373 /* 2374 * Enable interrupts. 2375 */ 2376 bus_space_write_4(st, sh, SIP_IER, IER_IE); 2377 2378 /* 2379 * Start the transmit and receive processes. 2380 */ 2381 bus_space_write_4(st, sh, SIP_CR, CR_RXE | CR_TXE); 2382 2383 /* 2384 * Start the one second MII clock. 2385 */ 2386 callout_reset(&sc->sc_tick_ch, hz, SIP_DECL(tick), sc); 2387 2388 /* 2389 * ...all done! 2390 */ 2391 ifp->if_flags |= IFF_RUNNING; 2392 ifp->if_flags &= ~IFF_OACTIVE; 2393 2394 out: 2395 if (error) 2396 printf("%s: interface not running\n", sc->sc_dev.dv_xname); 2397 return (error); 2398 } 2399 2400 /* 2401 * sip_drain: 2402 * 2403 * Drain the receive queue. 2404 */ 2405 void 2406 SIP_DECL(rxdrain)(struct sip_softc *sc) 2407 { 2408 struct sip_rxsoft *rxs; 2409 int i; 2410 2411 for (i = 0; i < SIP_NRXDESC; i++) { 2412 rxs = &sc->sc_rxsoft[i]; 2413 if (rxs->rxs_mbuf != NULL) { 2414 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 2415 m_freem(rxs->rxs_mbuf); 2416 rxs->rxs_mbuf = NULL; 2417 } 2418 } 2419 } 2420 2421 /* 2422 * sip_stop: [ ifnet interface function ] 2423 * 2424 * Stop transmission on the interface. 2425 */ 2426 void 2427 SIP_DECL(stop)(struct ifnet *ifp, int disable) 2428 { 2429 struct sip_softc *sc = ifp->if_softc; 2430 bus_space_tag_t st = sc->sc_st; 2431 bus_space_handle_t sh = sc->sc_sh; 2432 struct sip_txsoft *txs; 2433 u_int32_t cmdsts = 0; /* DEBUG */ 2434 2435 /* 2436 * Stop the one second clock. 2437 */ 2438 callout_stop(&sc->sc_tick_ch); 2439 2440 /* Down the MII. */ 2441 mii_down(&sc->sc_mii); 2442 2443 /* 2444 * Disable interrupts. 2445 */ 2446 bus_space_write_4(st, sh, SIP_IER, 0); 2447 2448 /* 2449 * Stop receiver and transmitter. 2450 */ 2451 bus_space_write_4(st, sh, SIP_CR, CR_RXD | CR_TXD); 2452 2453 /* 2454 * Release any queued transmit buffers. 2455 */ 2456 while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 2457 if ((ifp->if_flags & IFF_DEBUG) != 0 && 2458 SIMPLEQ_NEXT(txs, txs_q) == NULL && 2459 (le32toh(sc->sc_txdescs[txs->txs_lastdesc].sipd_cmdsts) & 2460 CMDSTS_INTR) == 0) 2461 printf("%s: sip_stop: last descriptor does not " 2462 "have INTR bit set\n", sc->sc_dev.dv_xname); 2463 SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 2464 #ifdef DIAGNOSTIC 2465 if (txs->txs_mbuf == NULL) { 2466 printf("%s: dirty txsoft with no mbuf chain\n", 2467 sc->sc_dev.dv_xname); 2468 panic("sip_stop"); 2469 } 2470 #endif 2471 cmdsts |= /* DEBUG */ 2472 le32toh(sc->sc_txdescs[txs->txs_lastdesc].sipd_cmdsts); 2473 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 2474 m_freem(txs->txs_mbuf); 2475 txs->txs_mbuf = NULL; 2476 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 2477 } 2478 2479 if (disable) 2480 SIP_DECL(rxdrain)(sc); 2481 2482 /* 2483 * Mark the interface down and cancel the watchdog timer. 2484 */ 2485 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2486 ifp->if_timer = 0; 2487 2488 if ((ifp->if_flags & IFF_DEBUG) != 0 && 2489 (cmdsts & CMDSTS_INTR) == 0 && sc->sc_txfree != SIP_NTXDESC) 2490 printf("%s: sip_stop: no INTR bits set in dirty tx " 2491 "descriptors\n", sc->sc_dev.dv_xname); 2492 } 2493 2494 /* 2495 * sip_read_eeprom: 2496 * 2497 * Read data from the serial EEPROM. 2498 */ 2499 void 2500 SIP_DECL(read_eeprom)(struct sip_softc *sc, int word, int wordcnt, 2501 u_int16_t *data) 2502 { 2503 bus_space_tag_t st = sc->sc_st; 2504 bus_space_handle_t sh = sc->sc_sh; 2505 u_int16_t reg; 2506 int i, x; 2507 2508 for (i = 0; i < wordcnt; i++) { 2509 /* Send CHIP SELECT. */ 2510 reg = EROMAR_EECS; 2511 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2512 2513 /* Shift in the READ opcode. */ 2514 for (x = 3; x > 0; x--) { 2515 if (SIP_EEPROM_OPC_READ & (1 << (x - 1))) 2516 reg |= EROMAR_EEDI; 2517 else 2518 reg &= ~EROMAR_EEDI; 2519 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2520 bus_space_write_4(st, sh, SIP_EROMAR, 2521 reg | EROMAR_EESK); 2522 delay(4); 2523 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2524 delay(4); 2525 } 2526 2527 /* Shift in address. */ 2528 for (x = 6; x > 0; x--) { 2529 if ((word + i) & (1 << (x - 1))) 2530 reg |= EROMAR_EEDI; 2531 else 2532 reg &= ~EROMAR_EEDI; 2533 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2534 bus_space_write_4(st, sh, SIP_EROMAR, 2535 reg | EROMAR_EESK); 2536 delay(4); 2537 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2538 delay(4); 2539 } 2540 2541 /* Shift out data. */ 2542 reg = EROMAR_EECS; 2543 data[i] = 0; 2544 for (x = 16; x > 0; x--) { 2545 bus_space_write_4(st, sh, SIP_EROMAR, 2546 reg | EROMAR_EESK); 2547 delay(4); 2548 if (bus_space_read_4(st, sh, SIP_EROMAR) & EROMAR_EEDO) 2549 data[i] |= (1 << (x - 1)); 2550 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2551 delay(4); 2552 } 2553 2554 /* Clear CHIP SELECT. */ 2555 bus_space_write_4(st, sh, SIP_EROMAR, 0); 2556 delay(4); 2557 } 2558 } 2559 2560 /* 2561 * sip_add_rxbuf: 2562 * 2563 * Add a receive buffer to the indicated descriptor. 2564 */ 2565 int 2566 SIP_DECL(add_rxbuf)(struct sip_softc *sc, int idx) 2567 { 2568 struct sip_rxsoft *rxs = &sc->sc_rxsoft[idx]; 2569 struct mbuf *m; 2570 int error; 2571 2572 MGETHDR(m, M_DONTWAIT, MT_DATA); 2573 if (m == NULL) 2574 return (ENOBUFS); 2575 2576 MCLGET(m, M_DONTWAIT); 2577 if ((m->m_flags & M_EXT) == 0) { 2578 m_freem(m); 2579 return (ENOBUFS); 2580 } 2581 2582 #if defined(DP83820) 2583 m->m_len = SIP_RXBUF_LEN; 2584 #endif /* DP83820 */ 2585 2586 if (rxs->rxs_mbuf != NULL) 2587 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 2588 2589 rxs->rxs_mbuf = m; 2590 2591 error = bus_dmamap_load(sc->sc_dmat, rxs->rxs_dmamap, 2592 m->m_ext.ext_buf, m->m_ext.ext_size, NULL, 2593 BUS_DMA_READ|BUS_DMA_NOWAIT); 2594 if (error) { 2595 printf("%s: can't load rx DMA map %d, error = %d\n", 2596 sc->sc_dev.dv_xname, idx, error); 2597 panic("sip_add_rxbuf"); /* XXX */ 2598 } 2599 2600 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2601 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 2602 2603 SIP_INIT_RXDESC(sc, idx); 2604 2605 return (0); 2606 } 2607 2608 #if !defined(DP83820) 2609 /* 2610 * sip_sis900_set_filter: 2611 * 2612 * Set up the receive filter. 2613 */ 2614 void 2615 SIP_DECL(sis900_set_filter)(struct sip_softc *sc) 2616 { 2617 bus_space_tag_t st = sc->sc_st; 2618 bus_space_handle_t sh = sc->sc_sh; 2619 struct ethercom *ec = &sc->sc_ethercom; 2620 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2621 struct ether_multi *enm; 2622 u_int8_t *cp; 2623 struct ether_multistep step; 2624 u_int32_t crc, mchash[16]; 2625 2626 /* 2627 * Initialize the prototype RFCR. 2628 */ 2629 sc->sc_rfcr = RFCR_RFEN; 2630 if (ifp->if_flags & IFF_BROADCAST) 2631 sc->sc_rfcr |= RFCR_AAB; 2632 if (ifp->if_flags & IFF_PROMISC) { 2633 sc->sc_rfcr |= RFCR_AAP; 2634 goto allmulti; 2635 } 2636 2637 /* 2638 * Set up the multicast address filter by passing all multicast 2639 * addresses through a CRC generator, and then using the high-order 2640 * 6 bits as an index into the 128 bit multicast hash table (only 2641 * the lower 16 bits of each 32 bit multicast hash register are 2642 * valid). The high order bits select the register, while the 2643 * rest of the bits select the bit within the register. 2644 */ 2645 2646 memset(mchash, 0, sizeof(mchash)); 2647 2648 ETHER_FIRST_MULTI(step, ec, enm); 2649 while (enm != NULL) { 2650 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 2651 /* 2652 * We must listen to a range of multicast addresses. 2653 * For now, just accept all multicasts, rather than 2654 * trying to set only those filter bits needed to match 2655 * the range. (At this time, the only use of address 2656 * ranges is for IP multicast routing, for which the 2657 * range is big enough to require all bits set.) 2658 */ 2659 goto allmulti; 2660 } 2661 2662 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 2663 2664 if (SIP_SIS900_REV(sc, SIS_REV_635) || 2665 SIP_SIS900_REV(sc, SIS_REV_900B)) { 2666 /* Just want the 8 most significant bits. */ 2667 crc >>= 24; 2668 } else { 2669 /* Just want the 7 most significant bits. */ 2670 crc >>= 25; 2671 } 2672 2673 /* Set the corresponding bit in the hash table. */ 2674 mchash[crc >> 4] |= 1 << (crc & 0xf); 2675 2676 ETHER_NEXT_MULTI(step, enm); 2677 } 2678 2679 ifp->if_flags &= ~IFF_ALLMULTI; 2680 goto setit; 2681 2682 allmulti: 2683 ifp->if_flags |= IFF_ALLMULTI; 2684 sc->sc_rfcr |= RFCR_AAM; 2685 2686 setit: 2687 #define FILTER_EMIT(addr, data) \ 2688 bus_space_write_4(st, sh, SIP_RFCR, (addr)); \ 2689 delay(1); \ 2690 bus_space_write_4(st, sh, SIP_RFDR, (data)); \ 2691 delay(1) 2692 2693 /* 2694 * Disable receive filter, and program the node address. 2695 */ 2696 cp = LLADDR(ifp->if_sadl); 2697 FILTER_EMIT(RFCR_RFADDR_NODE0, (cp[1] << 8) | cp[0]); 2698 FILTER_EMIT(RFCR_RFADDR_NODE2, (cp[3] << 8) | cp[2]); 2699 FILTER_EMIT(RFCR_RFADDR_NODE4, (cp[5] << 8) | cp[4]); 2700 2701 if ((ifp->if_flags & IFF_ALLMULTI) == 0) { 2702 /* 2703 * Program the multicast hash table. 2704 */ 2705 FILTER_EMIT(RFCR_RFADDR_MC0, mchash[0]); 2706 FILTER_EMIT(RFCR_RFADDR_MC1, mchash[1]); 2707 FILTER_EMIT(RFCR_RFADDR_MC2, mchash[2]); 2708 FILTER_EMIT(RFCR_RFADDR_MC3, mchash[3]); 2709 FILTER_EMIT(RFCR_RFADDR_MC4, mchash[4]); 2710 FILTER_EMIT(RFCR_RFADDR_MC5, mchash[5]); 2711 FILTER_EMIT(RFCR_RFADDR_MC6, mchash[6]); 2712 FILTER_EMIT(RFCR_RFADDR_MC7, mchash[7]); 2713 if (SIP_SIS900_REV(sc, SIS_REV_635) || 2714 SIP_SIS900_REV(sc, SIS_REV_900B)) { 2715 FILTER_EMIT(RFCR_RFADDR_MC8, mchash[8]); 2716 FILTER_EMIT(RFCR_RFADDR_MC9, mchash[9]); 2717 FILTER_EMIT(RFCR_RFADDR_MC10, mchash[10]); 2718 FILTER_EMIT(RFCR_RFADDR_MC11, mchash[11]); 2719 FILTER_EMIT(RFCR_RFADDR_MC12, mchash[12]); 2720 FILTER_EMIT(RFCR_RFADDR_MC13, mchash[13]); 2721 FILTER_EMIT(RFCR_RFADDR_MC14, mchash[14]); 2722 FILTER_EMIT(RFCR_RFADDR_MC15, mchash[15]); 2723 } 2724 } 2725 #undef FILTER_EMIT 2726 2727 /* 2728 * Re-enable the receiver filter. 2729 */ 2730 bus_space_write_4(st, sh, SIP_RFCR, sc->sc_rfcr); 2731 } 2732 #endif /* ! DP83820 */ 2733 2734 /* 2735 * sip_dp83815_set_filter: 2736 * 2737 * Set up the receive filter. 2738 */ 2739 void 2740 SIP_DECL(dp83815_set_filter)(struct sip_softc *sc) 2741 { 2742 bus_space_tag_t st = sc->sc_st; 2743 bus_space_handle_t sh = sc->sc_sh; 2744 struct ethercom *ec = &sc->sc_ethercom; 2745 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2746 struct ether_multi *enm; 2747 u_int8_t *cp; 2748 struct ether_multistep step; 2749 u_int32_t crc, hash, slot, bit; 2750 #ifdef DP83820 2751 #define MCHASH_NWORDS 128 2752 #else 2753 #define MCHASH_NWORDS 32 2754 #endif /* DP83820 */ 2755 u_int16_t mchash[MCHASH_NWORDS]; 2756 int i; 2757 2758 /* 2759 * Initialize the prototype RFCR. 2760 * Enable the receive filter, and accept on 2761 * Perfect (destination address) Match 2762 * If IFF_BROADCAST, also accept all broadcast packets. 2763 * If IFF_PROMISC, accept all unicast packets (and later, set 2764 * IFF_ALLMULTI and accept all multicast, too). 2765 */ 2766 sc->sc_rfcr = RFCR_RFEN | RFCR_APM; 2767 if (ifp->if_flags & IFF_BROADCAST) 2768 sc->sc_rfcr |= RFCR_AAB; 2769 if (ifp->if_flags & IFF_PROMISC) { 2770 sc->sc_rfcr |= RFCR_AAP; 2771 goto allmulti; 2772 } 2773 2774 #ifdef DP83820 2775 /* 2776 * Set up the DP83820 multicast address filter by passing all multicast 2777 * addresses through a CRC generator, and then using the high-order 2778 * 11 bits as an index into the 2048 bit multicast hash table. The 2779 * high-order 7 bits select the slot, while the low-order 4 bits 2780 * select the bit within the slot. Note that only the low 16-bits 2781 * of each filter word are used, and there are 128 filter words. 2782 */ 2783 #else 2784 /* 2785 * Set up the DP83815 multicast address filter by passing all multicast 2786 * addresses through a CRC generator, and then using the high-order 2787 * 9 bits as an index into the 512 bit multicast hash table. The 2788 * high-order 5 bits select the slot, while the low-order 4 bits 2789 * select the bit within the slot. Note that only the low 16-bits 2790 * of each filter word are used, and there are 32 filter words. 2791 */ 2792 #endif /* DP83820 */ 2793 2794 memset(mchash, 0, sizeof(mchash)); 2795 2796 ifp->if_flags &= ~IFF_ALLMULTI; 2797 ETHER_FIRST_MULTI(step, ec, enm); 2798 if (enm == NULL) 2799 goto setit; 2800 while (enm != NULL) { 2801 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 2802 /* 2803 * We must listen to a range of multicast addresses. 2804 * For now, just accept all multicasts, rather than 2805 * trying to set only those filter bits needed to match 2806 * the range. (At this time, the only use of address 2807 * ranges is for IP multicast routing, for which the 2808 * range is big enough to require all bits set.) 2809 */ 2810 goto allmulti; 2811 } 2812 2813 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 2814 2815 #ifdef DP83820 2816 /* Just want the 11 most significant bits. */ 2817 hash = crc >> 21; 2818 #else 2819 /* Just want the 9 most significant bits. */ 2820 hash = crc >> 23; 2821 #endif /* DP83820 */ 2822 2823 slot = hash >> 4; 2824 bit = hash & 0xf; 2825 2826 /* Set the corresponding bit in the hash table. */ 2827 mchash[slot] |= 1 << bit; 2828 2829 ETHER_NEXT_MULTI(step, enm); 2830 } 2831 sc->sc_rfcr |= RFCR_MHEN; 2832 goto setit; 2833 2834 allmulti: 2835 ifp->if_flags |= IFF_ALLMULTI; 2836 sc->sc_rfcr |= RFCR_AAM; 2837 2838 setit: 2839 #define FILTER_EMIT(addr, data) \ 2840 bus_space_write_4(st, sh, SIP_RFCR, (addr)); \ 2841 delay(1); \ 2842 bus_space_write_4(st, sh, SIP_RFDR, (data)); \ 2843 delay(1) 2844 2845 /* 2846 * Disable receive filter, and program the node address. 2847 */ 2848 cp = LLADDR(ifp->if_sadl); 2849 FILTER_EMIT(RFCR_NS_RFADDR_PMATCH0, (cp[1] << 8) | cp[0]); 2850 FILTER_EMIT(RFCR_NS_RFADDR_PMATCH2, (cp[3] << 8) | cp[2]); 2851 FILTER_EMIT(RFCR_NS_RFADDR_PMATCH4, (cp[5] << 8) | cp[4]); 2852 2853 if ((ifp->if_flags & IFF_ALLMULTI) == 0) { 2854 /* 2855 * Program the multicast hash table. 2856 */ 2857 for (i = 0; i < MCHASH_NWORDS; i++) { 2858 FILTER_EMIT(RFCR_NS_RFADDR_FILTMEM + (i * 2), 2859 mchash[i]); 2860 } 2861 } 2862 #undef FILTER_EMIT 2863 #undef MCHASH_NWORDS 2864 2865 /* 2866 * Re-enable the receiver filter. 2867 */ 2868 bus_space_write_4(st, sh, SIP_RFCR, sc->sc_rfcr); 2869 } 2870 2871 #if defined(DP83820) 2872 /* 2873 * sip_dp83820_mii_readreg: [mii interface function] 2874 * 2875 * Read a PHY register on the MII of the DP83820. 2876 */ 2877 int 2878 SIP_DECL(dp83820_mii_readreg)(struct device *self, int phy, int reg) 2879 { 2880 struct sip_softc *sc = (void *) self; 2881 2882 if (sc->sc_cfg & CFG_TBI_EN) { 2883 bus_addr_t tbireg; 2884 int rv; 2885 2886 if (phy != 0) 2887 return (0); 2888 2889 switch (reg) { 2890 case MII_BMCR: tbireg = SIP_TBICR; break; 2891 case MII_BMSR: tbireg = SIP_TBISR; break; 2892 case MII_ANAR: tbireg = SIP_TANAR; break; 2893 case MII_ANLPAR: tbireg = SIP_TANLPAR; break; 2894 case MII_ANER: tbireg = SIP_TANER; break; 2895 case MII_EXTSR: 2896 /* 2897 * Don't even bother reading the TESR register. 2898 * The manual documents that the device has 2899 * 1000baseX full/half capability, but the 2900 * register itself seems read back 0 on some 2901 * boards. Just hard-code the result. 2902 */ 2903 return (EXTSR_1000XFDX|EXTSR_1000XHDX); 2904 2905 default: 2906 return (0); 2907 } 2908 2909 rv = bus_space_read_4(sc->sc_st, sc->sc_sh, tbireg) & 0xffff; 2910 if (tbireg == SIP_TBISR) { 2911 /* LINK and ACOMP are switched! */ 2912 int val = rv; 2913 2914 rv = 0; 2915 if (val & TBISR_MR_LINK_STATUS) 2916 rv |= BMSR_LINK; 2917 if (val & TBISR_MR_AN_COMPLETE) 2918 rv |= BMSR_ACOMP; 2919 2920 /* 2921 * The manual claims this register reads back 0 2922 * on hard and soft reset. But we want to let 2923 * the gentbi driver know that we support auto- 2924 * negotiation, so hard-code this bit in the 2925 * result. 2926 */ 2927 rv |= BMSR_ANEG | BMSR_EXTSTAT; 2928 } 2929 2930 return (rv); 2931 } 2932 2933 return (mii_bitbang_readreg(self, &SIP_DECL(dp83820_mii_bitbang_ops), 2934 phy, reg)); 2935 } 2936 2937 /* 2938 * sip_dp83820_mii_writereg: [mii interface function] 2939 * 2940 * Write a PHY register on the MII of the DP83820. 2941 */ 2942 void 2943 SIP_DECL(dp83820_mii_writereg)(struct device *self, int phy, int reg, int val) 2944 { 2945 struct sip_softc *sc = (void *) self; 2946 2947 if (sc->sc_cfg & CFG_TBI_EN) { 2948 bus_addr_t tbireg; 2949 2950 if (phy != 0) 2951 return; 2952 2953 switch (reg) { 2954 case MII_BMCR: tbireg = SIP_TBICR; break; 2955 case MII_ANAR: tbireg = SIP_TANAR; break; 2956 case MII_ANLPAR: tbireg = SIP_TANLPAR; break; 2957 default: 2958 return; 2959 } 2960 2961 bus_space_write_4(sc->sc_st, sc->sc_sh, tbireg, val); 2962 return; 2963 } 2964 2965 mii_bitbang_writereg(self, &SIP_DECL(dp83820_mii_bitbang_ops), 2966 phy, reg, val); 2967 } 2968 2969 /* 2970 * sip_dp83815_mii_statchg: [mii interface function] 2971 * 2972 * Callback from MII layer when media changes. 2973 */ 2974 void 2975 SIP_DECL(dp83820_mii_statchg)(struct device *self) 2976 { 2977 struct sip_softc *sc = (struct sip_softc *) self; 2978 u_int32_t cfg; 2979 2980 /* 2981 * Update TXCFG for full-duplex operation. 2982 */ 2983 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0) 2984 sc->sc_txcfg |= (TXCFG_CSI | TXCFG_HBI); 2985 else 2986 sc->sc_txcfg &= ~(TXCFG_CSI | TXCFG_HBI); 2987 2988 /* 2989 * Update RXCFG for full-duplex or loopback. 2990 */ 2991 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0 || 2992 IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_LOOP) 2993 sc->sc_rxcfg |= RXCFG_ATX; 2994 else 2995 sc->sc_rxcfg &= ~RXCFG_ATX; 2996 2997 /* 2998 * Update CFG for MII/GMII. 2999 */ 3000 if (sc->sc_ethercom.ec_if.if_baudrate == IF_Mbps(1000)) 3001 cfg = sc->sc_cfg | CFG_MODE_1000; 3002 else 3003 cfg = sc->sc_cfg; 3004 3005 /* 3006 * XXX 802.3x flow control. 3007 */ 3008 3009 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CFG, cfg); 3010 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXCFG, sc->sc_txcfg); 3011 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RXCFG, sc->sc_rxcfg); 3012 } 3013 3014 /* 3015 * sip_dp83820_mii_bitbang_read: [mii bit-bang interface function] 3016 * 3017 * Read the MII serial port for the MII bit-bang module. 3018 */ 3019 u_int32_t 3020 SIP_DECL(dp83820_mii_bitbang_read)(struct device *self) 3021 { 3022 struct sip_softc *sc = (void *) self; 3023 3024 return (bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_EROMAR)); 3025 } 3026 3027 /* 3028 * sip_dp83820_mii_bitbang_write: [mii big-bang interface function] 3029 * 3030 * Write the MII serial port for the MII bit-bang module. 3031 */ 3032 void 3033 SIP_DECL(dp83820_mii_bitbang_write)(struct device *self, u_int32_t val) 3034 { 3035 struct sip_softc *sc = (void *) self; 3036 3037 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_EROMAR, val); 3038 } 3039 #else /* ! DP83820 */ 3040 /* 3041 * sip_sis900_mii_readreg: [mii interface function] 3042 * 3043 * Read a PHY register on the MII. 3044 */ 3045 int 3046 SIP_DECL(sis900_mii_readreg)(struct device *self, int phy, int reg) 3047 { 3048 struct sip_softc *sc = (struct sip_softc *) self; 3049 u_int32_t enphy; 3050 3051 /* 3052 * The SiS 900 has only an internal PHY on the MII. Only allow 3053 * MII address 0. 3054 */ 3055 if (sc->sc_model->sip_product == PCI_PRODUCT_SIS_900 && 3056 sc->sc_rev < SIS_REV_635 && phy != 0) 3057 return (0); 3058 3059 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_ENPHY, 3060 (phy << ENPHY_PHYADDR_SHIFT) | (reg << ENPHY_REGADDR_SHIFT) | 3061 ENPHY_RWCMD | ENPHY_ACCESS); 3062 do { 3063 enphy = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_ENPHY); 3064 } while (enphy & ENPHY_ACCESS); 3065 return ((enphy & ENPHY_PHYDATA) >> ENPHY_DATA_SHIFT); 3066 } 3067 3068 /* 3069 * sip_sis900_mii_writereg: [mii interface function] 3070 * 3071 * Write a PHY register on the MII. 3072 */ 3073 void 3074 SIP_DECL(sis900_mii_writereg)(struct device *self, int phy, int reg, int val) 3075 { 3076 struct sip_softc *sc = (struct sip_softc *) self; 3077 u_int32_t enphy; 3078 3079 /* 3080 * The SiS 900 has only an internal PHY on the MII. Only allow 3081 * MII address 0. 3082 */ 3083 if (sc->sc_model->sip_product == PCI_PRODUCT_SIS_900 && 3084 sc->sc_rev < SIS_REV_635 && phy != 0) 3085 return; 3086 3087 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_ENPHY, 3088 (val << ENPHY_DATA_SHIFT) | (phy << ENPHY_PHYADDR_SHIFT) | 3089 (reg << ENPHY_REGADDR_SHIFT) | ENPHY_ACCESS); 3090 do { 3091 enphy = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_ENPHY); 3092 } while (enphy & ENPHY_ACCESS); 3093 } 3094 3095 /* 3096 * sip_sis900_mii_statchg: [mii interface function] 3097 * 3098 * Callback from MII layer when media changes. 3099 */ 3100 void 3101 SIP_DECL(sis900_mii_statchg)(struct device *self) 3102 { 3103 struct sip_softc *sc = (struct sip_softc *) self; 3104 u_int32_t flowctl; 3105 3106 /* 3107 * Update TXCFG for full-duplex operation. 3108 */ 3109 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0) 3110 sc->sc_txcfg |= (TXCFG_CSI | TXCFG_HBI); 3111 else 3112 sc->sc_txcfg &= ~(TXCFG_CSI | TXCFG_HBI); 3113 3114 /* 3115 * Update RXCFG for full-duplex or loopback. 3116 */ 3117 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0 || 3118 IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_LOOP) 3119 sc->sc_rxcfg |= RXCFG_ATX; 3120 else 3121 sc->sc_rxcfg &= ~RXCFG_ATX; 3122 3123 /* 3124 * Update IMR for use of 802.3x flow control. 3125 */ 3126 if ((sc->sc_mii.mii_media_active & IFM_FLOW) != 0) { 3127 sc->sc_imr |= (ISR_PAUSE_END|ISR_PAUSE_ST); 3128 flowctl = FLOWCTL_FLOWEN; 3129 } else { 3130 sc->sc_imr &= ~(ISR_PAUSE_END|ISR_PAUSE_ST); 3131 flowctl = 0; 3132 } 3133 3134 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXCFG, sc->sc_txcfg); 3135 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RXCFG, sc->sc_rxcfg); 3136 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_IMR, sc->sc_imr); 3137 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_FLOWCTL, flowctl); 3138 } 3139 3140 /* 3141 * sip_dp83815_mii_readreg: [mii interface function] 3142 * 3143 * Read a PHY register on the MII. 3144 */ 3145 int 3146 SIP_DECL(dp83815_mii_readreg)(struct device *self, int phy, int reg) 3147 { 3148 struct sip_softc *sc = (struct sip_softc *) self; 3149 u_int32_t val; 3150 3151 /* 3152 * The DP83815 only has an internal PHY. Only allow 3153 * MII address 0. 3154 */ 3155 if (phy != 0) 3156 return (0); 3157 3158 /* 3159 * Apparently, after a reset, the DP83815 can take a while 3160 * to respond. During this recovery period, the BMSR returns 3161 * a value of 0. Catch this -- it's not supposed to happen 3162 * (the BMSR has some hardcoded-to-1 bits), and wait for the 3163 * PHY to come back to life. 3164 * 3165 * This works out because the BMSR is the first register 3166 * read during the PHY probe process. 3167 */ 3168 do { 3169 val = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_NS_PHY(reg)); 3170 } while (reg == MII_BMSR && val == 0); 3171 3172 return (val & 0xffff); 3173 } 3174 3175 /* 3176 * sip_dp83815_mii_writereg: [mii interface function] 3177 * 3178 * Write a PHY register to the MII. 3179 */ 3180 void 3181 SIP_DECL(dp83815_mii_writereg)(struct device *self, int phy, int reg, int val) 3182 { 3183 struct sip_softc *sc = (struct sip_softc *) self; 3184 3185 /* 3186 * The DP83815 only has an internal PHY. Only allow 3187 * MII address 0. 3188 */ 3189 if (phy != 0) 3190 return; 3191 3192 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_NS_PHY(reg), val); 3193 } 3194 3195 /* 3196 * sip_dp83815_mii_statchg: [mii interface function] 3197 * 3198 * Callback from MII layer when media changes. 3199 */ 3200 void 3201 SIP_DECL(dp83815_mii_statchg)(struct device *self) 3202 { 3203 struct sip_softc *sc = (struct sip_softc *) self; 3204 3205 /* 3206 * Update TXCFG for full-duplex operation. 3207 */ 3208 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0) 3209 sc->sc_txcfg |= (TXCFG_CSI | TXCFG_HBI); 3210 else 3211 sc->sc_txcfg &= ~(TXCFG_CSI | TXCFG_HBI); 3212 3213 /* 3214 * Update RXCFG for full-duplex or loopback. 3215 */ 3216 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0 || 3217 IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_LOOP) 3218 sc->sc_rxcfg |= RXCFG_ATX; 3219 else 3220 sc->sc_rxcfg &= ~RXCFG_ATX; 3221 3222 /* 3223 * XXX 802.3x flow control. 3224 */ 3225 3226 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXCFG, sc->sc_txcfg); 3227 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RXCFG, sc->sc_rxcfg); 3228 } 3229 #endif /* DP83820 */ 3230 3231 #if defined(DP83820) 3232 void 3233 SIP_DECL(dp83820_read_macaddr)(struct sip_softc *sc, 3234 const struct pci_attach_args *pa, u_int8_t *enaddr) 3235 { 3236 u_int16_t eeprom_data[SIP_DP83820_EEPROM_LENGTH / 2]; 3237 u_int8_t cksum, *e, match; 3238 int i; 3239 3240 /* 3241 * EEPROM data format for the DP83820 can be found in 3242 * the DP83820 manual, section 4.2.4. 3243 */ 3244 3245 SIP_DECL(read_eeprom)(sc, 0, 3246 sizeof(eeprom_data) / sizeof(eeprom_data[0]), eeprom_data); 3247 3248 match = eeprom_data[SIP_DP83820_EEPROM_CHECKSUM / 2] >> 8; 3249 match = ~(match - 1); 3250 3251 cksum = 0x55; 3252 e = (u_int8_t *) eeprom_data; 3253 for (i = 0; i < SIP_DP83820_EEPROM_CHECKSUM; i++) 3254 cksum += *e++; 3255 3256 if (cksum != match) 3257 printf("%s: Checksum (%x) mismatch (%x)", 3258 sc->sc_dev.dv_xname, cksum, match); 3259 3260 enaddr[0] = eeprom_data[SIP_DP83820_EEPROM_PMATCH2 / 2] & 0xff; 3261 enaddr[1] = eeprom_data[SIP_DP83820_EEPROM_PMATCH2 / 2] >> 8; 3262 enaddr[2] = eeprom_data[SIP_DP83820_EEPROM_PMATCH1 / 2] & 0xff; 3263 enaddr[3] = eeprom_data[SIP_DP83820_EEPROM_PMATCH1 / 2] >> 8; 3264 enaddr[4] = eeprom_data[SIP_DP83820_EEPROM_PMATCH0 / 2] & 0xff; 3265 enaddr[5] = eeprom_data[SIP_DP83820_EEPROM_PMATCH0 / 2] >> 8; 3266 } 3267 #else /* ! DP83820 */ 3268 void 3269 SIP_DECL(sis900_read_macaddr)(struct sip_softc *sc, 3270 const struct pci_attach_args *pa, u_int8_t *enaddr) 3271 { 3272 u_int16_t myea[ETHER_ADDR_LEN / 2]; 3273 3274 switch (sc->sc_rev) { 3275 case SIS_REV_630S: 3276 case SIS_REV_630E: 3277 case SIS_REV_630EA1: 3278 case SIS_REV_630ET: 3279 case SIS_REV_635: 3280 /* 3281 * The MAC address for the on-board Ethernet of 3282 * the SiS 630 chipset is in the NVRAM. Kick 3283 * the chip into re-loading it from NVRAM, and 3284 * read the MAC address out of the filter registers. 3285 */ 3286 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CR, CR_RLD); 3287 3288 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RFCR, 3289 RFCR_RFADDR_NODE0); 3290 myea[0] = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_RFDR) & 3291 0xffff; 3292 3293 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RFCR, 3294 RFCR_RFADDR_NODE2); 3295 myea[1] = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_RFDR) & 3296 0xffff; 3297 3298 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RFCR, 3299 RFCR_RFADDR_NODE4); 3300 myea[2] = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_RFDR) & 3301 0xffff; 3302 break; 3303 3304 default: 3305 SIP_DECL(read_eeprom)(sc, SIP_EEPROM_ETHERNET_ID0 >> 1, 3306 sizeof(myea) / sizeof(myea[0]), myea); 3307 } 3308 3309 enaddr[0] = myea[0] & 0xff; 3310 enaddr[1] = myea[0] >> 8; 3311 enaddr[2] = myea[1] & 0xff; 3312 enaddr[3] = myea[1] >> 8; 3313 enaddr[4] = myea[2] & 0xff; 3314 enaddr[5] = myea[2] >> 8; 3315 } 3316 3317 /* Table and macro to bit-reverse an octet. */ 3318 static const u_int8_t bbr4[] = {0,8,4,12,2,10,6,14,1,9,5,13,3,11,7,15}; 3319 #define bbr(v) ((bbr4[(v)&0xf] << 4) | bbr4[((v)>>4) & 0xf]) 3320 3321 void 3322 SIP_DECL(dp83815_read_macaddr)(struct sip_softc *sc, 3323 const struct pci_attach_args *pa, u_int8_t *enaddr) 3324 { 3325 u_int16_t eeprom_data[SIP_DP83815_EEPROM_LENGTH / 2], *ea; 3326 u_int8_t cksum, *e, match; 3327 int i; 3328 3329 SIP_DECL(read_eeprom)(sc, 0, sizeof(eeprom_data) / 3330 sizeof(eeprom_data[0]), eeprom_data); 3331 3332 match = eeprom_data[SIP_DP83815_EEPROM_CHECKSUM/2] >> 8; 3333 match = ~(match - 1); 3334 3335 cksum = 0x55; 3336 e = (u_int8_t *) eeprom_data; 3337 for (i=0 ; i<SIP_DP83815_EEPROM_CHECKSUM ; i++) { 3338 cksum += *e++; 3339 } 3340 if (cksum != match) { 3341 printf("%s: Checksum (%x) mismatch (%x)", 3342 sc->sc_dev.dv_xname, cksum, match); 3343 } 3344 3345 /* 3346 * Unrolled because it makes slightly more sense this way. 3347 * The DP83815 stores the MAC address in bit 0 of word 6 3348 * through bit 15 of word 8. 3349 */ 3350 ea = &eeprom_data[6]; 3351 enaddr[0] = ((*ea & 0x1) << 7); 3352 ea++; 3353 enaddr[0] |= ((*ea & 0xFE00) >> 9); 3354 enaddr[1] = ((*ea & 0x1FE) >> 1); 3355 enaddr[2] = ((*ea & 0x1) << 7); 3356 ea++; 3357 enaddr[2] |= ((*ea & 0xFE00) >> 9); 3358 enaddr[3] = ((*ea & 0x1FE) >> 1); 3359 enaddr[4] = ((*ea & 0x1) << 7); 3360 ea++; 3361 enaddr[4] |= ((*ea & 0xFE00) >> 9); 3362 enaddr[5] = ((*ea & 0x1FE) >> 1); 3363 3364 /* 3365 * In case that's not weird enough, we also need to reverse 3366 * the bits in each byte. This all actually makes more sense 3367 * if you think about the EEPROM storage as an array of bits 3368 * being shifted into bytes, but that's not how we're looking 3369 * at it here... 3370 */ 3371 for (i = 0; i < 6 ;i++) 3372 enaddr[i] = bbr(enaddr[i]); 3373 } 3374 #endif /* DP83820 */ 3375 3376 /* 3377 * sip_mediastatus: [ifmedia interface function] 3378 * 3379 * Get the current interface media status. 3380 */ 3381 void 3382 SIP_DECL(mediastatus)(struct ifnet *ifp, struct ifmediareq *ifmr) 3383 { 3384 struct sip_softc *sc = ifp->if_softc; 3385 3386 mii_pollstat(&sc->sc_mii); 3387 ifmr->ifm_status = sc->sc_mii.mii_media_status; 3388 ifmr->ifm_active = sc->sc_mii.mii_media_active; 3389 } 3390 3391 /* 3392 * sip_mediachange: [ifmedia interface function] 3393 * 3394 * Set hardware to newly-selected media. 3395 */ 3396 int 3397 SIP_DECL(mediachange)(struct ifnet *ifp) 3398 { 3399 struct sip_softc *sc = ifp->if_softc; 3400 3401 if (ifp->if_flags & IFF_UP) 3402 mii_mediachg(&sc->sc_mii); 3403 return (0); 3404 } 3405
Indexes created Tue Sep 30 11:09:46 GMT 2025