if_sip.c revision 1.75
1 /* $NetBSD: if_sip.c,v 1.75 2002/12/23 02:58:37 tsutsui 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 1.75 2002/12/23 02:58:37 tsutsui 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 u_int32_t extsts; 1127 #endif 1128 1129 /* 1130 * If we've been told to pause, don't transmit any more packets. 1131 */ 1132 if (sc->sc_flags & SIPF_PAUSED) 1133 ifp->if_flags |= IFF_OACTIVE; 1134 1135 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 1136 return; 1137 1138 /* 1139 * Loop through the send queue, setting up transmit descriptors 1140 * until we drain the queue, or use up all available transmit 1141 * descriptors. 1142 */ 1143 for (;;) { 1144 /* Get a work queue entry. */ 1145 if ((txs = SIMPLEQ_FIRST(&sc->sc_txfreeq)) == NULL) { 1146 SIP_EVCNT_INCR(&sc->sc_ev_txsstall); 1147 break; 1148 } 1149 1150 /* 1151 * Grab a packet off the queue. 1152 */ 1153 IFQ_POLL(&ifp->if_snd, m0); 1154 if (m0 == NULL) 1155 break; 1156 #ifndef DP83820 1157 m = NULL; 1158 #endif 1159 1160 dmamap = txs->txs_dmamap; 1161 1162 #ifdef DP83820 1163 /* 1164 * Load the DMA map. If this fails, the packet either 1165 * didn't fit in the allotted number of segments, or we 1166 * were short on resources. For the too-many-segments 1167 * case, we simply report an error and drop the packet, 1168 * since we can't sanely copy a jumbo packet to a single 1169 * buffer. 1170 */ 1171 error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, 1172 BUS_DMA_WRITE|BUS_DMA_NOWAIT); 1173 if (error) { 1174 if (error == EFBIG) { 1175 printf("%s: Tx packet consumes too many " 1176 "DMA segments, dropping...\n", 1177 sc->sc_dev.dv_xname); 1178 IFQ_DEQUEUE(&ifp->if_snd, m0); 1179 m_freem(m0); 1180 continue; 1181 } 1182 /* 1183 * Short on resources, just stop for now. 1184 */ 1185 break; 1186 } 1187 #else /* DP83820 */ 1188 /* 1189 * Load the DMA map. If this fails, the packet either 1190 * didn't fit in the alloted number of segments, or we 1191 * were short on resources. In this case, we'll copy 1192 * and try again. 1193 */ 1194 if (bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, 1195 BUS_DMA_WRITE|BUS_DMA_NOWAIT) != 0) { 1196 MGETHDR(m, M_DONTWAIT, MT_DATA); 1197 if (m == NULL) { 1198 printf("%s: unable to allocate Tx mbuf\n", 1199 sc->sc_dev.dv_xname); 1200 break; 1201 } 1202 if (m0->m_pkthdr.len > MHLEN) { 1203 MCLGET(m, M_DONTWAIT); 1204 if ((m->m_flags & M_EXT) == 0) { 1205 printf("%s: unable to allocate Tx " 1206 "cluster\n", sc->sc_dev.dv_xname); 1207 m_freem(m); 1208 break; 1209 } 1210 } 1211 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, caddr_t)); 1212 m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len; 1213 error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, 1214 m, BUS_DMA_WRITE|BUS_DMA_NOWAIT); 1215 if (error) { 1216 printf("%s: unable to load Tx buffer, " 1217 "error = %d\n", sc->sc_dev.dv_xname, error); 1218 break; 1219 } 1220 } 1221 #endif /* DP83820 */ 1222 1223 /* 1224 * Ensure we have enough descriptors free to describe 1225 * the packet. Note, we always reserve one descriptor 1226 * at the end of the ring as a termination point, to 1227 * prevent wrap-around. 1228 */ 1229 if (dmamap->dm_nsegs > (sc->sc_txfree - 1)) { 1230 /* 1231 * Not enough free descriptors to transmit this 1232 * packet. We haven't committed anything yet, 1233 * so just unload the DMA map, put the packet 1234 * back on the queue, and punt. Notify the upper 1235 * layer that there are not more slots left. 1236 * 1237 * XXX We could allocate an mbuf and copy, but 1238 * XXX is it worth it? 1239 */ 1240 ifp->if_flags |= IFF_OACTIVE; 1241 bus_dmamap_unload(sc->sc_dmat, dmamap); 1242 #ifndef DP83820 1243 if (m != NULL) 1244 m_freem(m); 1245 #endif 1246 SIP_EVCNT_INCR(&sc->sc_ev_txdstall); 1247 break; 1248 } 1249 1250 IFQ_DEQUEUE(&ifp->if_snd, m0); 1251 #ifndef DP83820 1252 if (m != NULL) { 1253 m_freem(m0); 1254 m0 = m; 1255 } 1256 #endif 1257 1258 /* 1259 * WE ARE NOW COMMITTED TO TRANSMITTING THE PACKET. 1260 */ 1261 1262 /* Sync the DMA map. */ 1263 bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize, 1264 BUS_DMASYNC_PREWRITE); 1265 1266 /* 1267 * Initialize the transmit descriptors. 1268 */ 1269 for (nexttx = lasttx = sc->sc_txnext, seg = 0; 1270 seg < dmamap->dm_nsegs; 1271 seg++, nexttx = SIP_NEXTTX(nexttx)) { 1272 /* 1273 * If this is the first descriptor we're 1274 * enqueueing, don't set the OWN bit just 1275 * yet. That could cause a race condition. 1276 * We'll do it below. 1277 */ 1278 sc->sc_txdescs[nexttx].sipd_bufptr = 1279 htole32(dmamap->dm_segs[seg].ds_addr); 1280 sc->sc_txdescs[nexttx].sipd_cmdsts = 1281 htole32((nexttx == sc->sc_txnext ? 0 : CMDSTS_OWN) | 1282 CMDSTS_MORE | dmamap->dm_segs[seg].ds_len); 1283 #ifdef DP83820 1284 sc->sc_txdescs[nexttx].sipd_extsts = 0; 1285 #endif /* DP83820 */ 1286 lasttx = nexttx; 1287 } 1288 1289 /* Clear the MORE bit on the last segment. */ 1290 sc->sc_txdescs[lasttx].sipd_cmdsts &= htole32(~CMDSTS_MORE); 1291 1292 /* 1293 * If we're in the interrupt delay window, delay the 1294 * interrupt. 1295 */ 1296 if (++sc->sc_txwin >= (SIP_TXQUEUELEN * 2 / 3)) { 1297 SIP_EVCNT_INCR(&sc->sc_ev_txforceintr); 1298 sc->sc_txdescs[lasttx].sipd_cmdsts |= 1299 htole32(CMDSTS_INTR); 1300 sc->sc_txwin = 0; 1301 } 1302 1303 #ifdef DP83820 1304 /* 1305 * If VLANs are enabled and the packet has a VLAN tag, set 1306 * up the descriptor to encapsulate the packet for us. 1307 * 1308 * This apparently has to be on the last descriptor of 1309 * the packet. 1310 */ 1311 if (sc->sc_ethercom.ec_nvlans != 0 && 1312 (m = m_aux_find(m0, AF_LINK, ETHERTYPE_VLAN)) != NULL) { 1313 sc->sc_txdescs[lasttx].sipd_extsts |= 1314 htole32(EXTSTS_VPKT | 1315 htons(*mtod(m, int *) & EXTSTS_VTCI)); 1316 } 1317 1318 /* 1319 * If the upper-layer has requested IPv4/TCPv4/UDPv4 1320 * checksumming, set up the descriptor to do this work 1321 * for us. 1322 * 1323 * This apparently has to be on the first descriptor of 1324 * the packet. 1325 * 1326 * Byte-swap constants so the compiler can optimize. 1327 */ 1328 extsts = 0; 1329 if (m0->m_pkthdr.csum_flags & M_CSUM_IPv4) { 1330 KDASSERT(ifp->if_capenable & IFCAP_CSUM_IPv4); 1331 SIP_EVCNT_INCR(&sc->sc_ev_txipsum); 1332 extsts |= htole32(EXTSTS_IPPKT); 1333 } 1334 if (m0->m_pkthdr.csum_flags & M_CSUM_TCPv4) { 1335 KDASSERT(ifp->if_capenable & IFCAP_CSUM_TCPv4); 1336 SIP_EVCNT_INCR(&sc->sc_ev_txtcpsum); 1337 extsts |= htole32(EXTSTS_TCPPKT); 1338 } else if (m0->m_pkthdr.csum_flags & M_CSUM_UDPv4) { 1339 KDASSERT(ifp->if_capenable & IFCAP_CSUM_UDPv4); 1340 SIP_EVCNT_INCR(&sc->sc_ev_txudpsum); 1341 extsts |= htole32(EXTSTS_UDPPKT); 1342 } 1343 sc->sc_txdescs[sc->sc_txnext].sipd_extsts |= extsts; 1344 #endif /* DP83820 */ 1345 1346 /* Sync the descriptors we're using. */ 1347 SIP_CDTXSYNC(sc, sc->sc_txnext, dmamap->dm_nsegs, 1348 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1349 1350 /* 1351 * The entire packet is set up. Give the first descrptor 1352 * to the chip now. 1353 */ 1354 sc->sc_txdescs[sc->sc_txnext].sipd_cmdsts |= 1355 htole32(CMDSTS_OWN); 1356 SIP_CDTXSYNC(sc, sc->sc_txnext, 1, 1357 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1358 1359 /* 1360 * Store a pointer to the packet so we can free it later, 1361 * and remember what txdirty will be once the packet is 1362 * done. 1363 */ 1364 txs->txs_mbuf = m0; 1365 txs->txs_firstdesc = sc->sc_txnext; 1366 txs->txs_lastdesc = lasttx; 1367 1368 /* Advance the tx pointer. */ 1369 sc->sc_txfree -= dmamap->dm_nsegs; 1370 sc->sc_txnext = nexttx; 1371 1372 SIMPLEQ_REMOVE_HEAD(&sc->sc_txfreeq, txs_q); 1373 SIMPLEQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q); 1374 1375 #if NBPFILTER > 0 1376 /* 1377 * Pass the packet to any BPF listeners. 1378 */ 1379 if (ifp->if_bpf) 1380 bpf_mtap(ifp->if_bpf, m0); 1381 #endif /* NBPFILTER > 0 */ 1382 } 1383 1384 if (txs == NULL || sc->sc_txfree == 0) { 1385 /* No more slots left; notify upper layer. */ 1386 ifp->if_flags |= IFF_OACTIVE; 1387 } 1388 1389 if (sc->sc_txfree != ofree) { 1390 /* 1391 * Start the transmit process. Note, the manual says 1392 * that if there are no pending transmissions in the 1393 * chip's internal queue (indicated by TXE being clear), 1394 * then the driver software must set the TXDP to the 1395 * first descriptor to be transmitted. However, if we 1396 * do this, it causes serious performance degredation on 1397 * the DP83820 under load, not setting TXDP doesn't seem 1398 * to adversely affect the SiS 900 or DP83815. 1399 * 1400 * Well, I guess it wouldn't be the first time a manual 1401 * has lied -- and they could be speaking of the NULL- 1402 * terminated descriptor list case, rather than OWN- 1403 * terminated rings. 1404 */ 1405 #if 0 1406 if ((bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_CR) & 1407 CR_TXE) == 0) { 1408 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXDP, 1409 SIP_CDTXADDR(sc, firsttx)); 1410 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CR, CR_TXE); 1411 } 1412 #else 1413 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CR, CR_TXE); 1414 #endif 1415 1416 /* Set a watchdog timer in case the chip flakes out. */ 1417 ifp->if_timer = 5; 1418 } 1419 } 1420 1421 /* 1422 * sip_watchdog: [ifnet interface function] 1423 * 1424 * Watchdog timer handler. 1425 */ 1426 void 1427 SIP_DECL(watchdog)(struct ifnet *ifp) 1428 { 1429 struct sip_softc *sc = ifp->if_softc; 1430 1431 /* 1432 * The chip seems to ignore the CMDSTS_INTR bit sometimes! 1433 * If we get a timeout, try and sweep up transmit descriptors. 1434 * If we manage to sweep them all up, ignore the lack of 1435 * interrupt. 1436 */ 1437 SIP_DECL(txintr)(sc); 1438 1439 if (sc->sc_txfree != SIP_NTXDESC) { 1440 printf("%s: device timeout\n", sc->sc_dev.dv_xname); 1441 ifp->if_oerrors++; 1442 1443 /* Reset the interface. */ 1444 (void) SIP_DECL(init)(ifp); 1445 } else if (ifp->if_flags & IFF_DEBUG) 1446 printf("%s: recovered from device timeout\n", 1447 sc->sc_dev.dv_xname); 1448 1449 /* Try to get more packets going. */ 1450 SIP_DECL(start)(ifp); 1451 } 1452 1453 /* 1454 * sip_ioctl: [ifnet interface function] 1455 * 1456 * Handle control requests from the operator. 1457 */ 1458 int 1459 SIP_DECL(ioctl)(struct ifnet *ifp, u_long cmd, caddr_t data) 1460 { 1461 struct sip_softc *sc = ifp->if_softc; 1462 struct ifreq *ifr = (struct ifreq *)data; 1463 int s, error; 1464 1465 s = splnet(); 1466 1467 switch (cmd) { 1468 case SIOCSIFMEDIA: 1469 case SIOCGIFMEDIA: 1470 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 1471 break; 1472 1473 default: 1474 error = ether_ioctl(ifp, cmd, data); 1475 if (error == ENETRESET) { 1476 /* 1477 * Multicast list has changed; set the hardware filter 1478 * accordingly. 1479 */ 1480 (*sc->sc_model->sip_variant->sipv_set_filter)(sc); 1481 error = 0; 1482 } 1483 break; 1484 } 1485 1486 /* Try to get more packets going. */ 1487 SIP_DECL(start)(ifp); 1488 1489 splx(s); 1490 return (error); 1491 } 1492 1493 /* 1494 * sip_intr: 1495 * 1496 * Interrupt service routine. 1497 */ 1498 int 1499 SIP_DECL(intr)(void *arg) 1500 { 1501 struct sip_softc *sc = arg; 1502 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1503 u_int32_t isr; 1504 int handled = 0; 1505 1506 for (;;) { 1507 /* Reading clears interrupt. */ 1508 isr = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_ISR); 1509 if ((isr & sc->sc_imr) == 0) 1510 break; 1511 1512 #if NRND > 0 1513 if (RND_ENABLED(&sc->rnd_source)) 1514 rnd_add_uint32(&sc->rnd_source, isr); 1515 #endif 1516 1517 handled = 1; 1518 1519 if (isr & (ISR_RXORN|ISR_RXIDLE|ISR_RXDESC)) { 1520 SIP_EVCNT_INCR(&sc->sc_ev_rxintr); 1521 1522 /* Grab any new packets. */ 1523 SIP_DECL(rxintr)(sc); 1524 1525 if (isr & ISR_RXORN) { 1526 printf("%s: receive FIFO overrun\n", 1527 sc->sc_dev.dv_xname); 1528 1529 /* XXX adjust rx_drain_thresh? */ 1530 } 1531 1532 if (isr & ISR_RXIDLE) { 1533 printf("%s: receive ring overrun\n", 1534 sc->sc_dev.dv_xname); 1535 1536 /* Get the receive process going again. */ 1537 bus_space_write_4(sc->sc_st, sc->sc_sh, 1538 SIP_RXDP, SIP_CDRXADDR(sc, sc->sc_rxptr)); 1539 bus_space_write_4(sc->sc_st, sc->sc_sh, 1540 SIP_CR, CR_RXE); 1541 } 1542 } 1543 1544 if (isr & (ISR_TXURN|ISR_TXDESC|ISR_TXIDLE)) { 1545 #ifdef SIP_EVENT_COUNTERS 1546 if (isr & ISR_TXDESC) 1547 SIP_EVCNT_INCR(&sc->sc_ev_txdintr); 1548 else if (isr & ISR_TXIDLE) 1549 SIP_EVCNT_INCR(&sc->sc_ev_txiintr); 1550 #endif 1551 1552 /* Sweep up transmit descriptors. */ 1553 SIP_DECL(txintr)(sc); 1554 1555 if (isr & ISR_TXURN) { 1556 u_int32_t thresh; 1557 1558 printf("%s: transmit FIFO underrun", 1559 sc->sc_dev.dv_xname); 1560 1561 thresh = sc->sc_tx_drain_thresh + 1; 1562 if (thresh <= TXCFG_DRTH && 1563 (thresh * 32) <= (SIP_TXFIFO_SIZE - 1564 (sc->sc_tx_fill_thresh * 32))) { 1565 printf("; increasing Tx drain " 1566 "threshold to %u bytes\n", 1567 thresh * 32); 1568 sc->sc_tx_drain_thresh = thresh; 1569 (void) SIP_DECL(init)(ifp); 1570 } else { 1571 (void) SIP_DECL(init)(ifp); 1572 printf("\n"); 1573 } 1574 } 1575 } 1576 1577 #if !defined(DP83820) 1578 if (sc->sc_imr & (ISR_PAUSE_END|ISR_PAUSE_ST)) { 1579 if (isr & ISR_PAUSE_ST) { 1580 sc->sc_flags |= SIPF_PAUSED; 1581 ifp->if_flags |= IFF_OACTIVE; 1582 } 1583 if (isr & ISR_PAUSE_END) { 1584 sc->sc_flags &= ~SIPF_PAUSED; 1585 ifp->if_flags &= ~IFF_OACTIVE; 1586 } 1587 } 1588 #endif /* ! DP83820 */ 1589 1590 if (isr & ISR_HIBERR) { 1591 int want_init = 0; 1592 1593 SIP_EVCNT_INCR(&sc->sc_ev_hiberr); 1594 1595 #define PRINTERR(bit, str) \ 1596 do { \ 1597 if ((isr & (bit)) != 0) { \ 1598 if ((ifp->if_flags & IFF_DEBUG) != 0) \ 1599 printf("%s: %s\n", \ 1600 sc->sc_dev.dv_xname, str); \ 1601 want_init = 1; \ 1602 } \ 1603 } while (/*CONSTCOND*/0) 1604 1605 PRINTERR(ISR_DPERR, "parity error"); 1606 PRINTERR(ISR_SSERR, "system error"); 1607 PRINTERR(ISR_RMABT, "master abort"); 1608 PRINTERR(ISR_RTABT, "target abort"); 1609 PRINTERR(ISR_RXSOVR, "receive status FIFO overrun"); 1610 /* 1611 * Ignore: 1612 * Tx reset complete 1613 * Rx reset complete 1614 */ 1615 if (want_init) 1616 (void) SIP_DECL(init)(ifp); 1617 #undef PRINTERR 1618 } 1619 } 1620 1621 /* Try to get more packets going. */ 1622 SIP_DECL(start)(ifp); 1623 1624 return (handled); 1625 } 1626 1627 /* 1628 * sip_txintr: 1629 * 1630 * Helper; handle transmit interrupts. 1631 */ 1632 void 1633 SIP_DECL(txintr)(struct sip_softc *sc) 1634 { 1635 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1636 struct sip_txsoft *txs; 1637 u_int32_t cmdsts; 1638 1639 if ((sc->sc_flags & SIPF_PAUSED) == 0) 1640 ifp->if_flags &= ~IFF_OACTIVE; 1641 1642 /* 1643 * Go through our Tx list and free mbufs for those 1644 * frames which have been transmitted. 1645 */ 1646 while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 1647 SIP_CDTXSYNC(sc, txs->txs_firstdesc, txs->txs_dmamap->dm_nsegs, 1648 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1649 1650 cmdsts = le32toh(sc->sc_txdescs[txs->txs_lastdesc].sipd_cmdsts); 1651 if (cmdsts & CMDSTS_OWN) 1652 break; 1653 1654 SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 1655 1656 sc->sc_txfree += txs->txs_dmamap->dm_nsegs; 1657 1658 bus_dmamap_sync(sc->sc_dmat, txs->txs_dmamap, 1659 0, txs->txs_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1660 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 1661 m_freem(txs->txs_mbuf); 1662 txs->txs_mbuf = NULL; 1663 1664 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 1665 1666 /* 1667 * Check for errors and collisions. 1668 */ 1669 if (cmdsts & 1670 (CMDSTS_Tx_TXA|CMDSTS_Tx_TFU|CMDSTS_Tx_ED|CMDSTS_Tx_EC)) { 1671 ifp->if_oerrors++; 1672 if (cmdsts & CMDSTS_Tx_EC) 1673 ifp->if_collisions += 16; 1674 if (ifp->if_flags & IFF_DEBUG) { 1675 if (cmdsts & CMDSTS_Tx_ED) 1676 printf("%s: excessive deferral\n", 1677 sc->sc_dev.dv_xname); 1678 if (cmdsts & CMDSTS_Tx_EC) 1679 printf("%s: excessive collisions\n", 1680 sc->sc_dev.dv_xname); 1681 } 1682 } else { 1683 /* Packet was transmitted successfully. */ 1684 ifp->if_opackets++; 1685 ifp->if_collisions += CMDSTS_COLLISIONS(cmdsts); 1686 } 1687 } 1688 1689 /* 1690 * If there are no more pending transmissions, cancel the watchdog 1691 * timer. 1692 */ 1693 if (txs == NULL) { 1694 ifp->if_timer = 0; 1695 sc->sc_txwin = 0; 1696 } 1697 } 1698 1699 #if defined(DP83820) 1700 /* 1701 * sip_rxintr: 1702 * 1703 * Helper; handle receive interrupts. 1704 */ 1705 void 1706 SIP_DECL(rxintr)(struct sip_softc *sc) 1707 { 1708 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1709 struct sip_rxsoft *rxs; 1710 struct mbuf *m, *tailm; 1711 u_int32_t cmdsts, extsts; 1712 int i, len; 1713 1714 for (i = sc->sc_rxptr;; i = SIP_NEXTRX(i)) { 1715 rxs = &sc->sc_rxsoft[i]; 1716 1717 SIP_CDRXSYNC(sc, i, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1718 1719 cmdsts = le32toh(sc->sc_rxdescs[i].sipd_cmdsts); 1720 extsts = le32toh(sc->sc_rxdescs[i].sipd_extsts); 1721 1722 /* 1723 * NOTE: OWN is set if owned by _consumer_. We're the 1724 * consumer of the receive ring, so if the bit is clear, 1725 * we have processed all of the packets. 1726 */ 1727 if ((cmdsts & CMDSTS_OWN) == 0) { 1728 /* 1729 * We have processed all of the receive buffers. 1730 */ 1731 break; 1732 } 1733 1734 if (__predict_false(sc->sc_rxdiscard)) { 1735 SIP_INIT_RXDESC(sc, i); 1736 if ((cmdsts & CMDSTS_MORE) == 0) { 1737 /* Reset our state. */ 1738 sc->sc_rxdiscard = 0; 1739 } 1740 continue; 1741 } 1742 1743 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1744 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1745 1746 m = rxs->rxs_mbuf; 1747 1748 /* 1749 * Add a new receive buffer to the ring. 1750 */ 1751 if (SIP_DECL(add_rxbuf)(sc, i) != 0) { 1752 /* 1753 * Failed, throw away what we've done so 1754 * far, and discard the rest of the packet. 1755 */ 1756 ifp->if_ierrors++; 1757 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1758 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 1759 SIP_INIT_RXDESC(sc, i); 1760 if (cmdsts & CMDSTS_MORE) 1761 sc->sc_rxdiscard = 1; 1762 if (sc->sc_rxhead != NULL) 1763 m_freem(sc->sc_rxhead); 1764 SIP_RXCHAIN_RESET(sc); 1765 continue; 1766 } 1767 1768 SIP_RXCHAIN_LINK(sc, m); 1769 1770 /* 1771 * If this is not the end of the packet, keep 1772 * looking. 1773 */ 1774 if (cmdsts & CMDSTS_MORE) { 1775 sc->sc_rxlen += m->m_len; 1776 continue; 1777 } 1778 1779 /* 1780 * Okay, we have the entire packet now... 1781 */ 1782 *sc->sc_rxtailp = NULL; 1783 m = sc->sc_rxhead; 1784 tailm = sc->sc_rxtail; 1785 1786 SIP_RXCHAIN_RESET(sc); 1787 1788 /* 1789 * If an error occurred, update stats and drop the packet. 1790 */ 1791 if (cmdsts & (CMDSTS_Rx_RXA|CMDSTS_Rx_RUNT| 1792 CMDSTS_Rx_ISE|CMDSTS_Rx_CRCE|CMDSTS_Rx_FAE)) { 1793 ifp->if_ierrors++; 1794 if ((cmdsts & CMDSTS_Rx_RXA) != 0 && 1795 (cmdsts & CMDSTS_Rx_RXO) == 0) { 1796 /* Receive overrun handled elsewhere. */ 1797 printf("%s: receive descriptor error\n", 1798 sc->sc_dev.dv_xname); 1799 } 1800 #define PRINTERR(bit, str) \ 1801 if ((ifp->if_flags & IFF_DEBUG) != 0 && \ 1802 (cmdsts & (bit)) != 0) \ 1803 printf("%s: %s\n", sc->sc_dev.dv_xname, str) 1804 PRINTERR(CMDSTS_Rx_RUNT, "runt packet"); 1805 PRINTERR(CMDSTS_Rx_ISE, "invalid symbol error"); 1806 PRINTERR(CMDSTS_Rx_CRCE, "CRC error"); 1807 PRINTERR(CMDSTS_Rx_FAE, "frame alignment error"); 1808 #undef PRINTERR 1809 m_freem(m); 1810 continue; 1811 } 1812 1813 /* 1814 * No errors. 1815 * 1816 * Note, the DP83820 includes the CRC with 1817 * every packet. 1818 */ 1819 len = CMDSTS_SIZE(cmdsts); 1820 tailm->m_len = len - sc->sc_rxlen; 1821 1822 /* 1823 * If the packet is small enough to fit in a 1824 * single header mbuf, allocate one and copy 1825 * the data into it. This greatly reduces 1826 * memory consumption when we receive lots 1827 * of small packets. 1828 */ 1829 if (SIP_DECL(copy_small) != 0 && len <= (MHLEN - 2)) { 1830 struct mbuf *nm; 1831 MGETHDR(nm, M_DONTWAIT, MT_DATA); 1832 if (nm == NULL) { 1833 ifp->if_ierrors++; 1834 m_freem(m); 1835 continue; 1836 } 1837 nm->m_data += 2; 1838 nm->m_pkthdr.len = nm->m_len = len; 1839 m_copydata(m, 0, len, mtod(nm, caddr_t)); 1840 m_freem(m); 1841 m = nm; 1842 } 1843 #ifndef __NO_STRICT_ALIGNMENT 1844 else { 1845 /* 1846 * The DP83820's receive buffers must be 4-byte 1847 * aligned. But this means that the data after 1848 * the Ethernet header is misaligned. To compensate, 1849 * we have artificially shortened the buffer size 1850 * in the descriptor, and we do an overlapping copy 1851 * of the data two bytes further in (in the first 1852 * buffer of the chain only). 1853 */ 1854 memmove(mtod(m, caddr_t) + 2, mtod(m, caddr_t), 1855 m->m_len); 1856 m->m_data += 2; 1857 } 1858 #endif /* ! __NO_STRICT_ALIGNMENT */ 1859 1860 /* 1861 * If VLANs are enabled, VLAN packets have been unwrapped 1862 * for us. Associate the tag with the packet. 1863 */ 1864 if (sc->sc_ethercom.ec_nvlans != 0 && 1865 (extsts & EXTSTS_VPKT) != 0) { 1866 struct mbuf *vtag; 1867 1868 vtag = m_aux_add(m, AF_LINK, ETHERTYPE_VLAN); 1869 if (vtag == NULL) { 1870 ifp->if_ierrors++; 1871 printf("%s: unable to allocate VLAN tag\n", 1872 sc->sc_dev.dv_xname); 1873 m_freem(m); 1874 continue; 1875 } 1876 1877 *mtod(vtag, int *) = ntohs(extsts & EXTSTS_VTCI); 1878 vtag->m_len = sizeof(int); 1879 } 1880 1881 /* 1882 * Set the incoming checksum information for the 1883 * packet. 1884 */ 1885 if ((extsts & EXTSTS_IPPKT) != 0) { 1886 SIP_EVCNT_INCR(&sc->sc_ev_rxipsum); 1887 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1888 if (extsts & EXTSTS_Rx_IPERR) 1889 m->m_pkthdr.csum_flags |= M_CSUM_IPv4_BAD; 1890 if (extsts & EXTSTS_TCPPKT) { 1891 SIP_EVCNT_INCR(&sc->sc_ev_rxtcpsum); 1892 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1893 if (extsts & EXTSTS_Rx_TCPERR) 1894 m->m_pkthdr.csum_flags |= 1895 M_CSUM_TCP_UDP_BAD; 1896 } else if (extsts & EXTSTS_UDPPKT) { 1897 SIP_EVCNT_INCR(&sc->sc_ev_rxudpsum); 1898 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1899 if (extsts & EXTSTS_Rx_UDPERR) 1900 m->m_pkthdr.csum_flags |= 1901 M_CSUM_TCP_UDP_BAD; 1902 } 1903 } 1904 1905 ifp->if_ipackets++; 1906 m->m_flags |= M_HASFCS; 1907 m->m_pkthdr.rcvif = ifp; 1908 m->m_pkthdr.len = len; 1909 1910 #if NBPFILTER > 0 1911 /* 1912 * Pass this up to any BPF listeners, but only 1913 * pass if up the stack if it's for us. 1914 */ 1915 if (ifp->if_bpf) 1916 bpf_mtap(ifp->if_bpf, m); 1917 #endif /* NBPFILTER > 0 */ 1918 1919 /* Pass it on. */ 1920 (*ifp->if_input)(ifp, m); 1921 } 1922 1923 /* Update the receive pointer. */ 1924 sc->sc_rxptr = i; 1925 } 1926 #else /* ! DP83820 */ 1927 /* 1928 * sip_rxintr: 1929 * 1930 * Helper; handle receive interrupts. 1931 */ 1932 void 1933 SIP_DECL(rxintr)(struct sip_softc *sc) 1934 { 1935 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1936 struct sip_rxsoft *rxs; 1937 struct mbuf *m; 1938 u_int32_t cmdsts; 1939 int i, len; 1940 1941 for (i = sc->sc_rxptr;; i = SIP_NEXTRX(i)) { 1942 rxs = &sc->sc_rxsoft[i]; 1943 1944 SIP_CDRXSYNC(sc, i, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1945 1946 cmdsts = le32toh(sc->sc_rxdescs[i].sipd_cmdsts); 1947 1948 /* 1949 * NOTE: OWN is set if owned by _consumer_. We're the 1950 * consumer of the receive ring, so if the bit is clear, 1951 * we have processed all of the packets. 1952 */ 1953 if ((cmdsts & CMDSTS_OWN) == 0) { 1954 /* 1955 * We have processed all of the receive buffers. 1956 */ 1957 break; 1958 } 1959 1960 /* 1961 * If any collisions were seen on the wire, count one. 1962 */ 1963 if (cmdsts & CMDSTS_Rx_COL) 1964 ifp->if_collisions++; 1965 1966 /* 1967 * If an error occurred, update stats, clear the status 1968 * word, and leave the packet buffer in place. It will 1969 * simply be reused the next time the ring comes around. 1970 */ 1971 if (cmdsts & (CMDSTS_Rx_RXA|CMDSTS_Rx_RUNT| 1972 CMDSTS_Rx_ISE|CMDSTS_Rx_CRCE|CMDSTS_Rx_FAE)) { 1973 ifp->if_ierrors++; 1974 if ((cmdsts & CMDSTS_Rx_RXA) != 0 && 1975 (cmdsts & CMDSTS_Rx_RXO) == 0) { 1976 /* Receive overrun handled elsewhere. */ 1977 printf("%s: receive descriptor error\n", 1978 sc->sc_dev.dv_xname); 1979 } 1980 #define PRINTERR(bit, str) \ 1981 if ((ifp->if_flags & IFF_DEBUG) != 0 && \ 1982 (cmdsts & (bit)) != 0) \ 1983 printf("%s: %s\n", sc->sc_dev.dv_xname, str) 1984 PRINTERR(CMDSTS_Rx_RUNT, "runt packet"); 1985 PRINTERR(CMDSTS_Rx_ISE, "invalid symbol error"); 1986 PRINTERR(CMDSTS_Rx_CRCE, "CRC error"); 1987 PRINTERR(CMDSTS_Rx_FAE, "frame alignment error"); 1988 #undef PRINTERR 1989 SIP_INIT_RXDESC(sc, i); 1990 continue; 1991 } 1992 1993 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1994 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1995 1996 /* 1997 * No errors; receive the packet. Note, the SiS 900 1998 * includes the CRC with every packet. 1999 */ 2000 len = CMDSTS_SIZE(cmdsts); 2001 2002 #ifdef __NO_STRICT_ALIGNMENT 2003 /* 2004 * If the packet is small enough to fit in a 2005 * single header mbuf, allocate one and copy 2006 * the data into it. This greatly reduces 2007 * memory consumption when we receive lots 2008 * of small packets. 2009 * 2010 * Otherwise, we add a new buffer to the receive 2011 * chain. If this fails, we drop the packet and 2012 * recycle the old buffer. 2013 */ 2014 if (SIP_DECL(copy_small) != 0 && len <= MHLEN) { 2015 MGETHDR(m, M_DONTWAIT, MT_DATA); 2016 if (m == NULL) 2017 goto dropit; 2018 memcpy(mtod(m, caddr_t), 2019 mtod(rxs->rxs_mbuf, caddr_t), len); 2020 SIP_INIT_RXDESC(sc, i); 2021 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2022 rxs->rxs_dmamap->dm_mapsize, 2023 BUS_DMASYNC_PREREAD); 2024 } else { 2025 m = rxs->rxs_mbuf; 2026 if (SIP_DECL(add_rxbuf)(sc, i) != 0) { 2027 dropit: 2028 ifp->if_ierrors++; 2029 SIP_INIT_RXDESC(sc, i); 2030 bus_dmamap_sync(sc->sc_dmat, 2031 rxs->rxs_dmamap, 0, 2032 rxs->rxs_dmamap->dm_mapsize, 2033 BUS_DMASYNC_PREREAD); 2034 continue; 2035 } 2036 } 2037 #else 2038 /* 2039 * The SiS 900's receive buffers must be 4-byte aligned. 2040 * But this means that the data after the Ethernet header 2041 * is misaligned. We must allocate a new buffer and 2042 * copy the data, shifted forward 2 bytes. 2043 */ 2044 MGETHDR(m, M_DONTWAIT, MT_DATA); 2045 if (m == NULL) { 2046 dropit: 2047 ifp->if_ierrors++; 2048 SIP_INIT_RXDESC(sc, i); 2049 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2050 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 2051 continue; 2052 } 2053 if (len > (MHLEN - 2)) { 2054 MCLGET(m, M_DONTWAIT); 2055 if ((m->m_flags & M_EXT) == 0) { 2056 m_freem(m); 2057 goto dropit; 2058 } 2059 } 2060 m->m_data += 2; 2061 2062 /* 2063 * Note that we use clusters for incoming frames, so the 2064 * buffer is virtually contiguous. 2065 */ 2066 memcpy(mtod(m, caddr_t), mtod(rxs->rxs_mbuf, caddr_t), len); 2067 2068 /* Allow the receive descriptor to continue using its mbuf. */ 2069 SIP_INIT_RXDESC(sc, i); 2070 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2071 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 2072 #endif /* __NO_STRICT_ALIGNMENT */ 2073 2074 ifp->if_ipackets++; 2075 m->m_flags |= M_HASFCS; 2076 m->m_pkthdr.rcvif = ifp; 2077 m->m_pkthdr.len = m->m_len = len; 2078 2079 #if NBPFILTER > 0 2080 /* 2081 * Pass this up to any BPF listeners, but only 2082 * pass if up the stack if it's for us. 2083 */ 2084 if (ifp->if_bpf) 2085 bpf_mtap(ifp->if_bpf, m); 2086 #endif /* NBPFILTER > 0 */ 2087 2088 /* Pass it on. */ 2089 (*ifp->if_input)(ifp, m); 2090 } 2091 2092 /* Update the receive pointer. */ 2093 sc->sc_rxptr = i; 2094 } 2095 #endif /* DP83820 */ 2096 2097 /* 2098 * sip_tick: 2099 * 2100 * One second timer, used to tick the MII. 2101 */ 2102 void 2103 SIP_DECL(tick)(void *arg) 2104 { 2105 struct sip_softc *sc = arg; 2106 int s; 2107 2108 s = splnet(); 2109 mii_tick(&sc->sc_mii); 2110 splx(s); 2111 2112 callout_reset(&sc->sc_tick_ch, hz, SIP_DECL(tick), sc); 2113 } 2114 2115 /* 2116 * sip_reset: 2117 * 2118 * Perform a soft reset on the SiS 900. 2119 */ 2120 void 2121 SIP_DECL(reset)(struct sip_softc *sc) 2122 { 2123 bus_space_tag_t st = sc->sc_st; 2124 bus_space_handle_t sh = sc->sc_sh; 2125 int i; 2126 2127 bus_space_write_4(st, sh, SIP_IER, 0); 2128 bus_space_write_4(st, sh, SIP_IMR, 0); 2129 bus_space_write_4(st, sh, SIP_RFCR, 0); 2130 bus_space_write_4(st, sh, SIP_CR, CR_RST); 2131 2132 for (i = 0; i < SIP_TIMEOUT; i++) { 2133 if ((bus_space_read_4(st, sh, SIP_CR) & CR_RST) == 0) 2134 break; 2135 delay(2); 2136 } 2137 2138 if (i == SIP_TIMEOUT) 2139 printf("%s: reset failed to complete\n", sc->sc_dev.dv_xname); 2140 2141 delay(1000); 2142 2143 #ifdef DP83820 2144 /* 2145 * Set the general purpose I/O bits. Do it here in case we 2146 * need to have GPIO set up to talk to the media interface. 2147 */ 2148 bus_space_write_4(st, sh, SIP_GPIOR, sc->sc_gpior); 2149 delay(1000); 2150 #endif /* DP83820 */ 2151 } 2152 2153 /* 2154 * sip_init: [ ifnet interface function ] 2155 * 2156 * Initialize the interface. Must be called at splnet(). 2157 */ 2158 int 2159 SIP_DECL(init)(struct ifnet *ifp) 2160 { 2161 struct sip_softc *sc = ifp->if_softc; 2162 bus_space_tag_t st = sc->sc_st; 2163 bus_space_handle_t sh = sc->sc_sh; 2164 struct sip_txsoft *txs; 2165 struct sip_rxsoft *rxs; 2166 struct sip_desc *sipd; 2167 u_int32_t reg; 2168 int i, error = 0; 2169 2170 /* 2171 * Cancel any pending I/O. 2172 */ 2173 SIP_DECL(stop)(ifp, 0); 2174 2175 /* 2176 * Reset the chip to a known state. 2177 */ 2178 SIP_DECL(reset)(sc); 2179 2180 #if !defined(DP83820) 2181 if (SIP_CHIP_MODEL(sc, PCI_VENDOR_NS, PCI_PRODUCT_NS_DP83815)) { 2182 /* 2183 * DP83815 manual, page 78: 2184 * 4.4 Recommended Registers Configuration 2185 * For optimum performance of the DP83815, version noted 2186 * as DP83815CVNG (SRR = 203h), the listed register 2187 * modifications must be followed in sequence... 2188 * 2189 * It's not clear if this should be 302h or 203h because that 2190 * chip name is listed as SRR 302h in the description of the 2191 * SRR register. However, my revision 302h DP83815 on the 2192 * Netgear FA311 purchased in 02/2001 needs these settings 2193 * to avoid tons of errors in AcceptPerfectMatch (non- 2194 * IFF_PROMISC) mode. I do not know if other revisions need 2195 * this set or not. [briggs -- 09 March 2001] 2196 * 2197 * Note that only the low-order 12 bits of 0xe4 are documented 2198 * and that this sets reserved bits in that register. 2199 */ 2200 reg = bus_space_read_4(st, sh, SIP_NS_SRR); 2201 if (reg == 0x302) { 2202 bus_space_write_4(st, sh, 0x00cc, 0x0001); 2203 bus_space_write_4(st, sh, 0x00e4, 0x189C); 2204 bus_space_write_4(st, sh, 0x00fc, 0x0000); 2205 bus_space_write_4(st, sh, 0x00f4, 0x5040); 2206 bus_space_write_4(st, sh, 0x00f8, 0x008c); 2207 } 2208 } 2209 #endif /* ! DP83820 */ 2210 2211 /* 2212 * Initialize the transmit descriptor ring. 2213 */ 2214 for (i = 0; i < SIP_NTXDESC; i++) { 2215 sipd = &sc->sc_txdescs[i]; 2216 memset(sipd, 0, sizeof(struct sip_desc)); 2217 sipd->sipd_link = htole32(SIP_CDTXADDR(sc, SIP_NEXTTX(i))); 2218 } 2219 SIP_CDTXSYNC(sc, 0, SIP_NTXDESC, 2220 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 2221 sc->sc_txfree = SIP_NTXDESC; 2222 sc->sc_txnext = 0; 2223 sc->sc_txwin = 0; 2224 2225 /* 2226 * Initialize the transmit job descriptors. 2227 */ 2228 SIMPLEQ_INIT(&sc->sc_txfreeq); 2229 SIMPLEQ_INIT(&sc->sc_txdirtyq); 2230 for (i = 0; i < SIP_TXQUEUELEN; i++) { 2231 txs = &sc->sc_txsoft[i]; 2232 txs->txs_mbuf = NULL; 2233 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 2234 } 2235 2236 /* 2237 * Initialize the receive descriptor and receive job 2238 * descriptor rings. 2239 */ 2240 for (i = 0; i < SIP_NRXDESC; i++) { 2241 rxs = &sc->sc_rxsoft[i]; 2242 if (rxs->rxs_mbuf == NULL) { 2243 if ((error = SIP_DECL(add_rxbuf)(sc, i)) != 0) { 2244 printf("%s: unable to allocate or map rx " 2245 "buffer %d, error = %d\n", 2246 sc->sc_dev.dv_xname, i, error); 2247 /* 2248 * XXX Should attempt to run with fewer receive 2249 * XXX buffers instead of just failing. 2250 */ 2251 SIP_DECL(rxdrain)(sc); 2252 goto out; 2253 } 2254 } else 2255 SIP_INIT_RXDESC(sc, i); 2256 } 2257 sc->sc_rxptr = 0; 2258 #ifdef DP83820 2259 sc->sc_rxdiscard = 0; 2260 SIP_RXCHAIN_RESET(sc); 2261 #endif /* DP83820 */ 2262 2263 /* 2264 * Set the configuration register; it's already initialized 2265 * in sip_attach(). 2266 */ 2267 bus_space_write_4(st, sh, SIP_CFG, sc->sc_cfg); 2268 2269 /* 2270 * Initialize the prototype TXCFG register. 2271 */ 2272 #if defined(DP83820) 2273 sc->sc_txcfg = TXCFG_MXDMA_512; 2274 sc->sc_rxcfg = RXCFG_MXDMA_512; 2275 #else 2276 if ((SIP_SIS900_REV(sc, SIS_REV_635) || 2277 SIP_SIS900_REV(sc, SIS_REV_900B)) && 2278 (bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_CFG) & CFG_EDBMASTEN)) { 2279 sc->sc_txcfg = TXCFG_MXDMA_64; 2280 sc->sc_rxcfg = RXCFG_MXDMA_64; 2281 } else { 2282 sc->sc_txcfg = TXCFG_MXDMA_512; 2283 sc->sc_rxcfg = RXCFG_MXDMA_512; 2284 } 2285 #endif /* DP83820 */ 2286 2287 sc->sc_txcfg |= TXCFG_ATP | 2288 (sc->sc_tx_fill_thresh << TXCFG_FLTH_SHIFT) | 2289 sc->sc_tx_drain_thresh; 2290 bus_space_write_4(st, sh, SIP_TXCFG, sc->sc_txcfg); 2291 2292 /* 2293 * Initialize the receive drain threshold if we have never 2294 * done so. 2295 */ 2296 if (sc->sc_rx_drain_thresh == 0) { 2297 /* 2298 * XXX This value should be tuned. This is set to the 2299 * maximum of 248 bytes, and we may be able to improve 2300 * performance by decreasing it (although we should never 2301 * set this value lower than 2; 14 bytes are required to 2302 * filter the packet). 2303 */ 2304 sc->sc_rx_drain_thresh = RXCFG_DRTH >> RXCFG_DRTH_SHIFT; 2305 } 2306 2307 /* 2308 * Initialize the prototype RXCFG register. 2309 */ 2310 sc->sc_rxcfg |= (sc->sc_rx_drain_thresh << RXCFG_DRTH_SHIFT); 2311 bus_space_write_4(st, sh, SIP_RXCFG, sc->sc_rxcfg); 2312 2313 #ifdef DP83820 2314 /* 2315 * Initialize the VLAN/IP receive control register. 2316 * We enable checksum computation on all incoming 2317 * packets, and do not reject packets w/ bad checksums. 2318 */ 2319 reg = 0; 2320 if (ifp->if_capenable & 2321 (IFCAP_CSUM_IPv4|IFCAP_CSUM_TCPv4|IFCAP_CSUM_UDPv4)) 2322 reg |= VRCR_IPEN; 2323 if (sc->sc_ethercom.ec_nvlans != 0) 2324 reg |= VRCR_VTDEN|VRCR_VTREN; 2325 bus_space_write_4(st, sh, SIP_VRCR, reg); 2326 2327 /* 2328 * Initialize the VLAN/IP transmit control register. 2329 * We enable outgoing checksum computation on a 2330 * per-packet basis. 2331 */ 2332 reg = 0; 2333 if (ifp->if_capenable & 2334 (IFCAP_CSUM_IPv4|IFCAP_CSUM_TCPv4|IFCAP_CSUM_UDPv4)) 2335 reg |= VTCR_PPCHK; 2336 if (sc->sc_ethercom.ec_nvlans != 0) 2337 reg |= VTCR_VPPTI; 2338 bus_space_write_4(st, sh, SIP_VTCR, reg); 2339 2340 /* 2341 * If we're using VLANs, initialize the VLAN data register. 2342 * To understand why we bswap the VLAN Ethertype, see section 2343 * 4.2.36 of the DP83820 manual. 2344 */ 2345 if (sc->sc_ethercom.ec_nvlans != 0) 2346 bus_space_write_4(st, sh, SIP_VDR, bswap16(ETHERTYPE_VLAN)); 2347 #endif /* DP83820 */ 2348 2349 /* 2350 * Give the transmit and receive rings to the chip. 2351 */ 2352 bus_space_write_4(st, sh, SIP_TXDP, SIP_CDTXADDR(sc, sc->sc_txnext)); 2353 bus_space_write_4(st, sh, SIP_RXDP, SIP_CDRXADDR(sc, sc->sc_rxptr)); 2354 2355 /* 2356 * Initialize the interrupt mask. 2357 */ 2358 sc->sc_imr = ISR_DPERR|ISR_SSERR|ISR_RMABT|ISR_RTABT|ISR_RXSOVR| 2359 ISR_TXURN|ISR_TXDESC|ISR_TXIDLE|ISR_RXORN|ISR_RXIDLE|ISR_RXDESC; 2360 bus_space_write_4(st, sh, SIP_IMR, sc->sc_imr); 2361 2362 /* Set up the receive filter. */ 2363 (*sc->sc_model->sip_variant->sipv_set_filter)(sc); 2364 2365 /* 2366 * Set the current media. Do this after initializing the prototype 2367 * IMR, since sip_mii_statchg() modifies the IMR for 802.3x flow 2368 * control. 2369 */ 2370 mii_mediachg(&sc->sc_mii); 2371 2372 /* 2373 * Enable interrupts. 2374 */ 2375 bus_space_write_4(st, sh, SIP_IER, IER_IE); 2376 2377 /* 2378 * Start the transmit and receive processes. 2379 */ 2380 bus_space_write_4(st, sh, SIP_CR, CR_RXE | CR_TXE); 2381 2382 /* 2383 * Start the one second MII clock. 2384 */ 2385 callout_reset(&sc->sc_tick_ch, hz, SIP_DECL(tick), sc); 2386 2387 /* 2388 * ...all done! 2389 */ 2390 ifp->if_flags |= IFF_RUNNING; 2391 ifp->if_flags &= ~IFF_OACTIVE; 2392 2393 out: 2394 if (error) 2395 printf("%s: interface not running\n", sc->sc_dev.dv_xname); 2396 return (error); 2397 } 2398 2399 /* 2400 * sip_drain: 2401 * 2402 * Drain the receive queue. 2403 */ 2404 void 2405 SIP_DECL(rxdrain)(struct sip_softc *sc) 2406 { 2407 struct sip_rxsoft *rxs; 2408 int i; 2409 2410 for (i = 0; i < SIP_NRXDESC; i++) { 2411 rxs = &sc->sc_rxsoft[i]; 2412 if (rxs->rxs_mbuf != NULL) { 2413 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 2414 m_freem(rxs->rxs_mbuf); 2415 rxs->rxs_mbuf = NULL; 2416 } 2417 } 2418 } 2419 2420 /* 2421 * sip_stop: [ ifnet interface function ] 2422 * 2423 * Stop transmission on the interface. 2424 */ 2425 void 2426 SIP_DECL(stop)(struct ifnet *ifp, int disable) 2427 { 2428 struct sip_softc *sc = ifp->if_softc; 2429 bus_space_tag_t st = sc->sc_st; 2430 bus_space_handle_t sh = sc->sc_sh; 2431 struct sip_txsoft *txs; 2432 u_int32_t cmdsts = 0; /* DEBUG */ 2433 2434 /* 2435 * Stop the one second clock. 2436 */ 2437 callout_stop(&sc->sc_tick_ch); 2438 2439 /* Down the MII. */ 2440 mii_down(&sc->sc_mii); 2441 2442 /* 2443 * Disable interrupts. 2444 */ 2445 bus_space_write_4(st, sh, SIP_IER, 0); 2446 2447 /* 2448 * Stop receiver and transmitter. 2449 */ 2450 bus_space_write_4(st, sh, SIP_CR, CR_RXD | CR_TXD); 2451 2452 /* 2453 * Release any queued transmit buffers. 2454 */ 2455 while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 2456 if ((ifp->if_flags & IFF_DEBUG) != 0 && 2457 SIMPLEQ_NEXT(txs, txs_q) == NULL && 2458 (le32toh(sc->sc_txdescs[txs->txs_lastdesc].sipd_cmdsts) & 2459 CMDSTS_INTR) == 0) 2460 printf("%s: sip_stop: last descriptor does not " 2461 "have INTR bit set\n", sc->sc_dev.dv_xname); 2462 SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 2463 #ifdef DIAGNOSTIC 2464 if (txs->txs_mbuf == NULL) { 2465 printf("%s: dirty txsoft with no mbuf chain\n", 2466 sc->sc_dev.dv_xname); 2467 panic("sip_stop"); 2468 } 2469 #endif 2470 cmdsts |= /* DEBUG */ 2471 le32toh(sc->sc_txdescs[txs->txs_lastdesc].sipd_cmdsts); 2472 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 2473 m_freem(txs->txs_mbuf); 2474 txs->txs_mbuf = NULL; 2475 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 2476 } 2477 2478 if (disable) 2479 SIP_DECL(rxdrain)(sc); 2480 2481 /* 2482 * Mark the interface down and cancel the watchdog timer. 2483 */ 2484 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2485 ifp->if_timer = 0; 2486 2487 if ((ifp->if_flags & IFF_DEBUG) != 0 && 2488 (cmdsts & CMDSTS_INTR) == 0 && sc->sc_txfree != SIP_NTXDESC) 2489 printf("%s: sip_stop: no INTR bits set in dirty tx " 2490 "descriptors\n", sc->sc_dev.dv_xname); 2491 } 2492 2493 /* 2494 * sip_read_eeprom: 2495 * 2496 * Read data from the serial EEPROM. 2497 */ 2498 void 2499 SIP_DECL(read_eeprom)(struct sip_softc *sc, int word, int wordcnt, 2500 u_int16_t *data) 2501 { 2502 bus_space_tag_t st = sc->sc_st; 2503 bus_space_handle_t sh = sc->sc_sh; 2504 u_int16_t reg; 2505 int i, x; 2506 2507 for (i = 0; i < wordcnt; i++) { 2508 /* Send CHIP SELECT. */ 2509 reg = EROMAR_EECS; 2510 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2511 2512 /* Shift in the READ opcode. */ 2513 for (x = 3; x > 0; x--) { 2514 if (SIP_EEPROM_OPC_READ & (1 << (x - 1))) 2515 reg |= EROMAR_EEDI; 2516 else 2517 reg &= ~EROMAR_EEDI; 2518 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2519 bus_space_write_4(st, sh, SIP_EROMAR, 2520 reg | EROMAR_EESK); 2521 delay(4); 2522 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2523 delay(4); 2524 } 2525 2526 /* Shift in address. */ 2527 for (x = 6; x > 0; x--) { 2528 if ((word + i) & (1 << (x - 1))) 2529 reg |= EROMAR_EEDI; 2530 else 2531 reg &= ~EROMAR_EEDI; 2532 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2533 bus_space_write_4(st, sh, SIP_EROMAR, 2534 reg | EROMAR_EESK); 2535 delay(4); 2536 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2537 delay(4); 2538 } 2539 2540 /* Shift out data. */ 2541 reg = EROMAR_EECS; 2542 data[i] = 0; 2543 for (x = 16; x > 0; x--) { 2544 bus_space_write_4(st, sh, SIP_EROMAR, 2545 reg | EROMAR_EESK); 2546 delay(4); 2547 if (bus_space_read_4(st, sh, SIP_EROMAR) & EROMAR_EEDO) 2548 data[i] |= (1 << (x - 1)); 2549 bus_space_write_4(st, sh, SIP_EROMAR, reg); 2550 delay(4); 2551 } 2552 2553 /* Clear CHIP SELECT. */ 2554 bus_space_write_4(st, sh, SIP_EROMAR, 0); 2555 delay(4); 2556 } 2557 } 2558 2559 /* 2560 * sip_add_rxbuf: 2561 * 2562 * Add a receive buffer to the indicated descriptor. 2563 */ 2564 int 2565 SIP_DECL(add_rxbuf)(struct sip_softc *sc, int idx) 2566 { 2567 struct sip_rxsoft *rxs = &sc->sc_rxsoft[idx]; 2568 struct mbuf *m; 2569 int error; 2570 2571 MGETHDR(m, M_DONTWAIT, MT_DATA); 2572 if (m == NULL) 2573 return (ENOBUFS); 2574 2575 MCLGET(m, M_DONTWAIT); 2576 if ((m->m_flags & M_EXT) == 0) { 2577 m_freem(m); 2578 return (ENOBUFS); 2579 } 2580 2581 #if defined(DP83820) 2582 m->m_len = SIP_RXBUF_LEN; 2583 #endif /* DP83820 */ 2584 2585 if (rxs->rxs_mbuf != NULL) 2586 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 2587 2588 rxs->rxs_mbuf = m; 2589 2590 error = bus_dmamap_load(sc->sc_dmat, rxs->rxs_dmamap, 2591 m->m_ext.ext_buf, m->m_ext.ext_size, NULL, 2592 BUS_DMA_READ|BUS_DMA_NOWAIT); 2593 if (error) { 2594 printf("%s: can't load rx DMA map %d, error = %d\n", 2595 sc->sc_dev.dv_xname, idx, error); 2596 panic("sip_add_rxbuf"); /* XXX */ 2597 } 2598 2599 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2600 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 2601 2602 SIP_INIT_RXDESC(sc, idx); 2603 2604 return (0); 2605 } 2606 2607 #if !defined(DP83820) 2608 /* 2609 * sip_sis900_set_filter: 2610 * 2611 * Set up the receive filter. 2612 */ 2613 void 2614 SIP_DECL(sis900_set_filter)(struct sip_softc *sc) 2615 { 2616 bus_space_tag_t st = sc->sc_st; 2617 bus_space_handle_t sh = sc->sc_sh; 2618 struct ethercom *ec = &sc->sc_ethercom; 2619 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2620 struct ether_multi *enm; 2621 u_int8_t *cp; 2622 struct ether_multistep step; 2623 u_int32_t crc, mchash[16]; 2624 2625 /* 2626 * Initialize the prototype RFCR. 2627 */ 2628 sc->sc_rfcr = RFCR_RFEN; 2629 if (ifp->if_flags & IFF_BROADCAST) 2630 sc->sc_rfcr |= RFCR_AAB; 2631 if (ifp->if_flags & IFF_PROMISC) { 2632 sc->sc_rfcr |= RFCR_AAP; 2633 goto allmulti; 2634 } 2635 2636 /* 2637 * Set up the multicast address filter by passing all multicast 2638 * addresses through a CRC generator, and then using the high-order 2639 * 6 bits as an index into the 128 bit multicast hash table (only 2640 * the lower 16 bits of each 32 bit multicast hash register are 2641 * valid). The high order bits select the register, while the 2642 * rest of the bits select the bit within the register. 2643 */ 2644 2645 memset(mchash, 0, sizeof(mchash)); 2646 2647 ETHER_FIRST_MULTI(step, ec, enm); 2648 while (enm != NULL) { 2649 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 2650 /* 2651 * We must listen to a range of multicast addresses. 2652 * For now, just accept all multicasts, rather than 2653 * trying to set only those filter bits needed to match 2654 * the range. (At this time, the only use of address 2655 * ranges is for IP multicast routing, for which the 2656 * range is big enough to require all bits set.) 2657 */ 2658 goto allmulti; 2659 } 2660 2661 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 2662 2663 if (SIP_SIS900_REV(sc, SIS_REV_635) || 2664 SIP_SIS900_REV(sc, SIS_REV_900B)) { 2665 /* Just want the 8 most significant bits. */ 2666 crc >>= 24; 2667 } else { 2668 /* Just want the 7 most significant bits. */ 2669 crc >>= 25; 2670 } 2671 2672 /* Set the corresponding bit in the hash table. */ 2673 mchash[crc >> 4] |= 1 << (crc & 0xf); 2674 2675 ETHER_NEXT_MULTI(step, enm); 2676 } 2677 2678 ifp->if_flags &= ~IFF_ALLMULTI; 2679 goto setit; 2680 2681 allmulti: 2682 ifp->if_flags |= IFF_ALLMULTI; 2683 sc->sc_rfcr |= RFCR_AAM; 2684 2685 setit: 2686 #define FILTER_EMIT(addr, data) \ 2687 bus_space_write_4(st, sh, SIP_RFCR, (addr)); \ 2688 delay(1); \ 2689 bus_space_write_4(st, sh, SIP_RFDR, (data)); \ 2690 delay(1) 2691 2692 /* 2693 * Disable receive filter, and program the node address. 2694 */ 2695 cp = LLADDR(ifp->if_sadl); 2696 FILTER_EMIT(RFCR_RFADDR_NODE0, (cp[1] << 8) | cp[0]); 2697 FILTER_EMIT(RFCR_RFADDR_NODE2, (cp[3] << 8) | cp[2]); 2698 FILTER_EMIT(RFCR_RFADDR_NODE4, (cp[5] << 8) | cp[4]); 2699 2700 if ((ifp->if_flags & IFF_ALLMULTI) == 0) { 2701 /* 2702 * Program the multicast hash table. 2703 */ 2704 FILTER_EMIT(RFCR_RFADDR_MC0, mchash[0]); 2705 FILTER_EMIT(RFCR_RFADDR_MC1, mchash[1]); 2706 FILTER_EMIT(RFCR_RFADDR_MC2, mchash[2]); 2707 FILTER_EMIT(RFCR_RFADDR_MC3, mchash[3]); 2708 FILTER_EMIT(RFCR_RFADDR_MC4, mchash[4]); 2709 FILTER_EMIT(RFCR_RFADDR_MC5, mchash[5]); 2710 FILTER_EMIT(RFCR_RFADDR_MC6, mchash[6]); 2711 FILTER_EMIT(RFCR_RFADDR_MC7, mchash[7]); 2712 if (SIP_SIS900_REV(sc, SIS_REV_635) || 2713 SIP_SIS900_REV(sc, SIS_REV_900B)) { 2714 FILTER_EMIT(RFCR_RFADDR_MC8, mchash[8]); 2715 FILTER_EMIT(RFCR_RFADDR_MC9, mchash[9]); 2716 FILTER_EMIT(RFCR_RFADDR_MC10, mchash[10]); 2717 FILTER_EMIT(RFCR_RFADDR_MC11, mchash[11]); 2718 FILTER_EMIT(RFCR_RFADDR_MC12, mchash[12]); 2719 FILTER_EMIT(RFCR_RFADDR_MC13, mchash[13]); 2720 FILTER_EMIT(RFCR_RFADDR_MC14, mchash[14]); 2721 FILTER_EMIT(RFCR_RFADDR_MC15, mchash[15]); 2722 } 2723 } 2724 #undef FILTER_EMIT 2725 2726 /* 2727 * Re-enable the receiver filter. 2728 */ 2729 bus_space_write_4(st, sh, SIP_RFCR, sc->sc_rfcr); 2730 } 2731 #endif /* ! DP83820 */ 2732 2733 /* 2734 * sip_dp83815_set_filter: 2735 * 2736 * Set up the receive filter. 2737 */ 2738 void 2739 SIP_DECL(dp83815_set_filter)(struct sip_softc *sc) 2740 { 2741 bus_space_tag_t st = sc->sc_st; 2742 bus_space_handle_t sh = sc->sc_sh; 2743 struct ethercom *ec = &sc->sc_ethercom; 2744 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2745 struct ether_multi *enm; 2746 u_int8_t *cp; 2747 struct ether_multistep step; 2748 u_int32_t crc, hash, slot, bit; 2749 #ifdef DP83820 2750 #define MCHASH_NWORDS 128 2751 #else 2752 #define MCHASH_NWORDS 32 2753 #endif /* DP83820 */ 2754 u_int16_t mchash[MCHASH_NWORDS]; 2755 int i; 2756 2757 /* 2758 * Initialize the prototype RFCR. 2759 * Enable the receive filter, and accept on 2760 * Perfect (destination address) Match 2761 * If IFF_BROADCAST, also accept all broadcast packets. 2762 * If IFF_PROMISC, accept all unicast packets (and later, set 2763 * IFF_ALLMULTI and accept all multicast, too). 2764 */ 2765 sc->sc_rfcr = RFCR_RFEN | RFCR_APM; 2766 if (ifp->if_flags & IFF_BROADCAST) 2767 sc->sc_rfcr |= RFCR_AAB; 2768 if (ifp->if_flags & IFF_PROMISC) { 2769 sc->sc_rfcr |= RFCR_AAP; 2770 goto allmulti; 2771 } 2772 2773 #ifdef DP83820 2774 /* 2775 * Set up the DP83820 multicast address filter by passing all multicast 2776 * addresses through a CRC generator, and then using the high-order 2777 * 11 bits as an index into the 2048 bit multicast hash table. The 2778 * high-order 7 bits select the slot, while the low-order 4 bits 2779 * select the bit within the slot. Note that only the low 16-bits 2780 * of each filter word are used, and there are 128 filter words. 2781 */ 2782 #else 2783 /* 2784 * Set up the DP83815 multicast address filter by passing all multicast 2785 * addresses through a CRC generator, and then using the high-order 2786 * 9 bits as an index into the 512 bit multicast hash table. The 2787 * high-order 5 bits select the slot, while the low-order 4 bits 2788 * select the bit within the slot. Note that only the low 16-bits 2789 * of each filter word are used, and there are 32 filter words. 2790 */ 2791 #endif /* DP83820 */ 2792 2793 memset(mchash, 0, sizeof(mchash)); 2794 2795 ifp->if_flags &= ~IFF_ALLMULTI; 2796 ETHER_FIRST_MULTI(step, ec, enm); 2797 if (enm == NULL) 2798 goto setit; 2799 while (enm != NULL) { 2800 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 2801 /* 2802 * We must listen to a range of multicast addresses. 2803 * For now, just accept all multicasts, rather than 2804 * trying to set only those filter bits needed to match 2805 * the range. (At this time, the only use of address 2806 * ranges is for IP multicast routing, for which the 2807 * range is big enough to require all bits set.) 2808 */ 2809 goto allmulti; 2810 } 2811 2812 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 2813 2814 #ifdef DP83820 2815 /* Just want the 11 most significant bits. */ 2816 hash = crc >> 21; 2817 #else 2818 /* Just want the 9 most significant bits. */ 2819 hash = crc >> 23; 2820 #endif /* DP83820 */ 2821 2822 slot = hash >> 4; 2823 bit = hash & 0xf; 2824 2825 /* Set the corresponding bit in the hash table. */ 2826 mchash[slot] |= 1 << bit; 2827 2828 ETHER_NEXT_MULTI(step, enm); 2829 } 2830 sc->sc_rfcr |= RFCR_MHEN; 2831 goto setit; 2832 2833 allmulti: 2834 ifp->if_flags |= IFF_ALLMULTI; 2835 sc->sc_rfcr |= RFCR_AAM; 2836 2837 setit: 2838 #define FILTER_EMIT(addr, data) \ 2839 bus_space_write_4(st, sh, SIP_RFCR, (addr)); \ 2840 delay(1); \ 2841 bus_space_write_4(st, sh, SIP_RFDR, (data)); \ 2842 delay(1) 2843 2844 /* 2845 * Disable receive filter, and program the node address. 2846 */ 2847 cp = LLADDR(ifp->if_sadl); 2848 FILTER_EMIT(RFCR_NS_RFADDR_PMATCH0, (cp[1] << 8) | cp[0]); 2849 FILTER_EMIT(RFCR_NS_RFADDR_PMATCH2, (cp[3] << 8) | cp[2]); 2850 FILTER_EMIT(RFCR_NS_RFADDR_PMATCH4, (cp[5] << 8) | cp[4]); 2851 2852 if ((ifp->if_flags & IFF_ALLMULTI) == 0) { 2853 /* 2854 * Program the multicast hash table. 2855 */ 2856 for (i = 0; i < MCHASH_NWORDS; i++) { 2857 FILTER_EMIT(RFCR_NS_RFADDR_FILTMEM + (i * 2), 2858 mchash[i]); 2859 } 2860 } 2861 #undef FILTER_EMIT 2862 #undef MCHASH_NWORDS 2863 2864 /* 2865 * Re-enable the receiver filter. 2866 */ 2867 bus_space_write_4(st, sh, SIP_RFCR, sc->sc_rfcr); 2868 } 2869 2870 #if defined(DP83820) 2871 /* 2872 * sip_dp83820_mii_readreg: [mii interface function] 2873 * 2874 * Read a PHY register on the MII of the DP83820. 2875 */ 2876 int 2877 SIP_DECL(dp83820_mii_readreg)(struct device *self, int phy, int reg) 2878 { 2879 struct sip_softc *sc = (void *) self; 2880 2881 if (sc->sc_cfg & CFG_TBI_EN) { 2882 bus_addr_t tbireg; 2883 int rv; 2884 2885 if (phy != 0) 2886 return (0); 2887 2888 switch (reg) { 2889 case MII_BMCR: tbireg = SIP_TBICR; break; 2890 case MII_BMSR: tbireg = SIP_TBISR; break; 2891 case MII_ANAR: tbireg = SIP_TANAR; break; 2892 case MII_ANLPAR: tbireg = SIP_TANLPAR; break; 2893 case MII_ANER: tbireg = SIP_TANER; break; 2894 case MII_EXTSR: 2895 /* 2896 * Don't even bother reading the TESR register. 2897 * The manual documents that the device has 2898 * 1000baseX full/half capability, but the 2899 * register itself seems read back 0 on some 2900 * boards. Just hard-code the result. 2901 */ 2902 return (EXTSR_1000XFDX|EXTSR_1000XHDX); 2903 2904 default: 2905 return (0); 2906 } 2907 2908 rv = bus_space_read_4(sc->sc_st, sc->sc_sh, tbireg) & 0xffff; 2909 if (tbireg == SIP_TBISR) { 2910 /* LINK and ACOMP are switched! */ 2911 int val = rv; 2912 2913 rv = 0; 2914 if (val & TBISR_MR_LINK_STATUS) 2915 rv |= BMSR_LINK; 2916 if (val & TBISR_MR_AN_COMPLETE) 2917 rv |= BMSR_ACOMP; 2918 2919 /* 2920 * The manual claims this register reads back 0 2921 * on hard and soft reset. But we want to let 2922 * the gentbi driver know that we support auto- 2923 * negotiation, so hard-code this bit in the 2924 * result. 2925 */ 2926 rv |= BMSR_ANEG | BMSR_EXTSTAT; 2927 } 2928 2929 return (rv); 2930 } 2931 2932 return (mii_bitbang_readreg(self, &SIP_DECL(dp83820_mii_bitbang_ops), 2933 phy, reg)); 2934 } 2935 2936 /* 2937 * sip_dp83820_mii_writereg: [mii interface function] 2938 * 2939 * Write a PHY register on the MII of the DP83820. 2940 */ 2941 void 2942 SIP_DECL(dp83820_mii_writereg)(struct device *self, int phy, int reg, int val) 2943 { 2944 struct sip_softc *sc = (void *) self; 2945 2946 if (sc->sc_cfg & CFG_TBI_EN) { 2947 bus_addr_t tbireg; 2948 2949 if (phy != 0) 2950 return; 2951 2952 switch (reg) { 2953 case MII_BMCR: tbireg = SIP_TBICR; break; 2954 case MII_ANAR: tbireg = SIP_TANAR; break; 2955 case MII_ANLPAR: tbireg = SIP_TANLPAR; break; 2956 default: 2957 return; 2958 } 2959 2960 bus_space_write_4(sc->sc_st, sc->sc_sh, tbireg, val); 2961 return; 2962 } 2963 2964 mii_bitbang_writereg(self, &SIP_DECL(dp83820_mii_bitbang_ops), 2965 phy, reg, val); 2966 } 2967 2968 /* 2969 * sip_dp83815_mii_statchg: [mii interface function] 2970 * 2971 * Callback from MII layer when media changes. 2972 */ 2973 void 2974 SIP_DECL(dp83820_mii_statchg)(struct device *self) 2975 { 2976 struct sip_softc *sc = (struct sip_softc *) self; 2977 u_int32_t cfg; 2978 2979 /* 2980 * Update TXCFG for full-duplex operation. 2981 */ 2982 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0) 2983 sc->sc_txcfg |= (TXCFG_CSI | TXCFG_HBI); 2984 else 2985 sc->sc_txcfg &= ~(TXCFG_CSI | TXCFG_HBI); 2986 2987 /* 2988 * Update RXCFG for full-duplex or loopback. 2989 */ 2990 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0 || 2991 IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_LOOP) 2992 sc->sc_rxcfg |= RXCFG_ATX; 2993 else 2994 sc->sc_rxcfg &= ~RXCFG_ATX; 2995 2996 /* 2997 * Update CFG for MII/GMII. 2998 */ 2999 if (sc->sc_ethercom.ec_if.if_baudrate == IF_Mbps(1000)) 3000 cfg = sc->sc_cfg | CFG_MODE_1000; 3001 else 3002 cfg = sc->sc_cfg; 3003 3004 /* 3005 * XXX 802.3x flow control. 3006 */ 3007 3008 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CFG, cfg); 3009 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXCFG, sc->sc_txcfg); 3010 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RXCFG, sc->sc_rxcfg); 3011 } 3012 3013 /* 3014 * sip_dp83820_mii_bitbang_read: [mii bit-bang interface function] 3015 * 3016 * Read the MII serial port for the MII bit-bang module. 3017 */ 3018 u_int32_t 3019 SIP_DECL(dp83820_mii_bitbang_read)(struct device *self) 3020 { 3021 struct sip_softc *sc = (void *) self; 3022 3023 return (bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_EROMAR)); 3024 } 3025 3026 /* 3027 * sip_dp83820_mii_bitbang_write: [mii big-bang interface function] 3028 * 3029 * Write the MII serial port for the MII bit-bang module. 3030 */ 3031 void 3032 SIP_DECL(dp83820_mii_bitbang_write)(struct device *self, u_int32_t val) 3033 { 3034 struct sip_softc *sc = (void *) self; 3035 3036 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_EROMAR, val); 3037 } 3038 #else /* ! DP83820 */ 3039 /* 3040 * sip_sis900_mii_readreg: [mii interface function] 3041 * 3042 * Read a PHY register on the MII. 3043 */ 3044 int 3045 SIP_DECL(sis900_mii_readreg)(struct device *self, int phy, int reg) 3046 { 3047 struct sip_softc *sc = (struct sip_softc *) self; 3048 u_int32_t enphy; 3049 3050 /* 3051 * The SiS 900 has only an internal PHY on the MII. Only allow 3052 * MII address 0. 3053 */ 3054 if (sc->sc_model->sip_product == PCI_PRODUCT_SIS_900 && 3055 sc->sc_rev < SIS_REV_635 && phy != 0) 3056 return (0); 3057 3058 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_ENPHY, 3059 (phy << ENPHY_PHYADDR_SHIFT) | (reg << ENPHY_REGADDR_SHIFT) | 3060 ENPHY_RWCMD | ENPHY_ACCESS); 3061 do { 3062 enphy = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_ENPHY); 3063 } while (enphy & ENPHY_ACCESS); 3064 return ((enphy & ENPHY_PHYDATA) >> ENPHY_DATA_SHIFT); 3065 } 3066 3067 /* 3068 * sip_sis900_mii_writereg: [mii interface function] 3069 * 3070 * Write a PHY register on the MII. 3071 */ 3072 void 3073 SIP_DECL(sis900_mii_writereg)(struct device *self, int phy, int reg, int val) 3074 { 3075 struct sip_softc *sc = (struct sip_softc *) self; 3076 u_int32_t enphy; 3077 3078 /* 3079 * The SiS 900 has only an internal PHY on the MII. Only allow 3080 * MII address 0. 3081 */ 3082 if (sc->sc_model->sip_product == PCI_PRODUCT_SIS_900 && 3083 sc->sc_rev < SIS_REV_635 && phy != 0) 3084 return; 3085 3086 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_ENPHY, 3087 (val << ENPHY_DATA_SHIFT) | (phy << ENPHY_PHYADDR_SHIFT) | 3088 (reg << ENPHY_REGADDR_SHIFT) | ENPHY_ACCESS); 3089 do { 3090 enphy = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_ENPHY); 3091 } while (enphy & ENPHY_ACCESS); 3092 } 3093 3094 /* 3095 * sip_sis900_mii_statchg: [mii interface function] 3096 * 3097 * Callback from MII layer when media changes. 3098 */ 3099 void 3100 SIP_DECL(sis900_mii_statchg)(struct device *self) 3101 { 3102 struct sip_softc *sc = (struct sip_softc *) self; 3103 u_int32_t flowctl; 3104 3105 /* 3106 * Update TXCFG for full-duplex operation. 3107 */ 3108 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0) 3109 sc->sc_txcfg |= (TXCFG_CSI | TXCFG_HBI); 3110 else 3111 sc->sc_txcfg &= ~(TXCFG_CSI | TXCFG_HBI); 3112 3113 /* 3114 * Update RXCFG for full-duplex or loopback. 3115 */ 3116 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0 || 3117 IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_LOOP) 3118 sc->sc_rxcfg |= RXCFG_ATX; 3119 else 3120 sc->sc_rxcfg &= ~RXCFG_ATX; 3121 3122 /* 3123 * Update IMR for use of 802.3x flow control. 3124 */ 3125 if ((sc->sc_mii.mii_media_active & IFM_FLOW) != 0) { 3126 sc->sc_imr |= (ISR_PAUSE_END|ISR_PAUSE_ST); 3127 flowctl = FLOWCTL_FLOWEN; 3128 } else { 3129 sc->sc_imr &= ~(ISR_PAUSE_END|ISR_PAUSE_ST); 3130 flowctl = 0; 3131 } 3132 3133 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXCFG, sc->sc_txcfg); 3134 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RXCFG, sc->sc_rxcfg); 3135 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_IMR, sc->sc_imr); 3136 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_FLOWCTL, flowctl); 3137 } 3138 3139 /* 3140 * sip_dp83815_mii_readreg: [mii interface function] 3141 * 3142 * Read a PHY register on the MII. 3143 */ 3144 int 3145 SIP_DECL(dp83815_mii_readreg)(struct device *self, int phy, int reg) 3146 { 3147 struct sip_softc *sc = (struct sip_softc *) self; 3148 u_int32_t val; 3149 3150 /* 3151 * The DP83815 only has an internal PHY. Only allow 3152 * MII address 0. 3153 */ 3154 if (phy != 0) 3155 return (0); 3156 3157 /* 3158 * Apparently, after a reset, the DP83815 can take a while 3159 * to respond. During this recovery period, the BMSR returns 3160 * a value of 0. Catch this -- it's not supposed to happen 3161 * (the BMSR has some hardcoded-to-1 bits), and wait for the 3162 * PHY to come back to life. 3163 * 3164 * This works out because the BMSR is the first register 3165 * read during the PHY probe process. 3166 */ 3167 do { 3168 val = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_NS_PHY(reg)); 3169 } while (reg == MII_BMSR && val == 0); 3170 3171 return (val & 0xffff); 3172 } 3173 3174 /* 3175 * sip_dp83815_mii_writereg: [mii interface function] 3176 * 3177 * Write a PHY register to the MII. 3178 */ 3179 void 3180 SIP_DECL(dp83815_mii_writereg)(struct device *self, int phy, int reg, int val) 3181 { 3182 struct sip_softc *sc = (struct sip_softc *) self; 3183 3184 /* 3185 * The DP83815 only has an internal PHY. Only allow 3186 * MII address 0. 3187 */ 3188 if (phy != 0) 3189 return; 3190 3191 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_NS_PHY(reg), val); 3192 } 3193 3194 /* 3195 * sip_dp83815_mii_statchg: [mii interface function] 3196 * 3197 * Callback from MII layer when media changes. 3198 */ 3199 void 3200 SIP_DECL(dp83815_mii_statchg)(struct device *self) 3201 { 3202 struct sip_softc *sc = (struct sip_softc *) self; 3203 3204 /* 3205 * Update TXCFG for full-duplex operation. 3206 */ 3207 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0) 3208 sc->sc_txcfg |= (TXCFG_CSI | TXCFG_HBI); 3209 else 3210 sc->sc_txcfg &= ~(TXCFG_CSI | TXCFG_HBI); 3211 3212 /* 3213 * Update RXCFG for full-duplex or loopback. 3214 */ 3215 if ((sc->sc_mii.mii_media_active & IFM_FDX) != 0 || 3216 IFM_SUBTYPE(sc->sc_mii.mii_media_active) == IFM_LOOP) 3217 sc->sc_rxcfg |= RXCFG_ATX; 3218 else 3219 sc->sc_rxcfg &= ~RXCFG_ATX; 3220 3221 /* 3222 * XXX 802.3x flow control. 3223 */ 3224 3225 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_TXCFG, sc->sc_txcfg); 3226 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RXCFG, sc->sc_rxcfg); 3227 } 3228 #endif /* DP83820 */ 3229 3230 #if defined(DP83820) 3231 void 3232 SIP_DECL(dp83820_read_macaddr)(struct sip_softc *sc, 3233 const struct pci_attach_args *pa, u_int8_t *enaddr) 3234 { 3235 u_int16_t eeprom_data[SIP_DP83820_EEPROM_LENGTH / 2]; 3236 u_int8_t cksum, *e, match; 3237 int i; 3238 3239 /* 3240 * EEPROM data format for the DP83820 can be found in 3241 * the DP83820 manual, section 4.2.4. 3242 */ 3243 3244 SIP_DECL(read_eeprom)(sc, 0, 3245 sizeof(eeprom_data) / sizeof(eeprom_data[0]), eeprom_data); 3246 3247 match = eeprom_data[SIP_DP83820_EEPROM_CHECKSUM / 2] >> 8; 3248 match = ~(match - 1); 3249 3250 cksum = 0x55; 3251 e = (u_int8_t *) eeprom_data; 3252 for (i = 0; i < SIP_DP83820_EEPROM_CHECKSUM; i++) 3253 cksum += *e++; 3254 3255 if (cksum != match) 3256 printf("%s: Checksum (%x) mismatch (%x)", 3257 sc->sc_dev.dv_xname, cksum, match); 3258 3259 enaddr[0] = eeprom_data[SIP_DP83820_EEPROM_PMATCH2 / 2] & 0xff; 3260 enaddr[1] = eeprom_data[SIP_DP83820_EEPROM_PMATCH2 / 2] >> 8; 3261 enaddr[2] = eeprom_data[SIP_DP83820_EEPROM_PMATCH1 / 2] & 0xff; 3262 enaddr[3] = eeprom_data[SIP_DP83820_EEPROM_PMATCH1 / 2] >> 8; 3263 enaddr[4] = eeprom_data[SIP_DP83820_EEPROM_PMATCH0 / 2] & 0xff; 3264 enaddr[5] = eeprom_data[SIP_DP83820_EEPROM_PMATCH0 / 2] >> 8; 3265 } 3266 #else /* ! DP83820 */ 3267 void 3268 SIP_DECL(sis900_read_macaddr)(struct sip_softc *sc, 3269 const struct pci_attach_args *pa, u_int8_t *enaddr) 3270 { 3271 u_int16_t myea[ETHER_ADDR_LEN / 2]; 3272 3273 switch (sc->sc_rev) { 3274 case SIS_REV_630S: 3275 case SIS_REV_630E: 3276 case SIS_REV_630EA1: 3277 case SIS_REV_630ET: 3278 case SIS_REV_635: 3279 /* 3280 * The MAC address for the on-board Ethernet of 3281 * the SiS 630 chipset is in the NVRAM. Kick 3282 * the chip into re-loading it from NVRAM, and 3283 * read the MAC address out of the filter registers. 3284 */ 3285 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_CR, CR_RLD); 3286 3287 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RFCR, 3288 RFCR_RFADDR_NODE0); 3289 myea[0] = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_RFDR) & 3290 0xffff; 3291 3292 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RFCR, 3293 RFCR_RFADDR_NODE2); 3294 myea[1] = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_RFDR) & 3295 0xffff; 3296 3297 bus_space_write_4(sc->sc_st, sc->sc_sh, SIP_RFCR, 3298 RFCR_RFADDR_NODE4); 3299 myea[2] = bus_space_read_4(sc->sc_st, sc->sc_sh, SIP_RFDR) & 3300 0xffff; 3301 break; 3302 3303 default: 3304 SIP_DECL(read_eeprom)(sc, SIP_EEPROM_ETHERNET_ID0 >> 1, 3305 sizeof(myea) / sizeof(myea[0]), myea); 3306 } 3307 3308 enaddr[0] = myea[0] & 0xff; 3309 enaddr[1] = myea[0] >> 8; 3310 enaddr[2] = myea[1] & 0xff; 3311 enaddr[3] = myea[1] >> 8; 3312 enaddr[4] = myea[2] & 0xff; 3313 enaddr[5] = myea[2] >> 8; 3314 } 3315 3316 /* Table and macro to bit-reverse an octet. */ 3317 static const u_int8_t bbr4[] = {0,8,4,12,2,10,6,14,1,9,5,13,3,11,7,15}; 3318 #define bbr(v) ((bbr4[(v)&0xf] << 4) | bbr4[((v)>>4) & 0xf]) 3319 3320 void 3321 SIP_DECL(dp83815_read_macaddr)(struct sip_softc *sc, 3322 const struct pci_attach_args *pa, u_int8_t *enaddr) 3323 { 3324 u_int16_t eeprom_data[SIP_DP83815_EEPROM_LENGTH / 2], *ea; 3325 u_int8_t cksum, *e, match; 3326 int i; 3327 3328 SIP_DECL(read_eeprom)(sc, 0, sizeof(eeprom_data) / 3329 sizeof(eeprom_data[0]), eeprom_data); 3330 3331 match = eeprom_data[SIP_DP83815_EEPROM_CHECKSUM/2] >> 8; 3332 match = ~(match - 1); 3333 3334 cksum = 0x55; 3335 e = (u_int8_t *) eeprom_data; 3336 for (i=0 ; i<SIP_DP83815_EEPROM_CHECKSUM ; i++) { 3337 cksum += *e++; 3338 } 3339 if (cksum != match) { 3340 printf("%s: Checksum (%x) mismatch (%x)", 3341 sc->sc_dev.dv_xname, cksum, match); 3342 } 3343 3344 /* 3345 * Unrolled because it makes slightly more sense this way. 3346 * The DP83815 stores the MAC address in bit 0 of word 6 3347 * through bit 15 of word 8. 3348 */ 3349 ea = &eeprom_data[6]; 3350 enaddr[0] = ((*ea & 0x1) << 7); 3351 ea++; 3352 enaddr[0] |= ((*ea & 0xFE00) >> 9); 3353 enaddr[1] = ((*ea & 0x1FE) >> 1); 3354 enaddr[2] = ((*ea & 0x1) << 7); 3355 ea++; 3356 enaddr[2] |= ((*ea & 0xFE00) >> 9); 3357 enaddr[3] = ((*ea & 0x1FE) >> 1); 3358 enaddr[4] = ((*ea & 0x1) << 7); 3359 ea++; 3360 enaddr[4] |= ((*ea & 0xFE00) >> 9); 3361 enaddr[5] = ((*ea & 0x1FE) >> 1); 3362 3363 /* 3364 * In case that's not weird enough, we also need to reverse 3365 * the bits in each byte. This all actually makes more sense 3366 * if you think about the EEPROM storage as an array of bits 3367 * being shifted into bytes, but that's not how we're looking 3368 * at it here... 3369 */ 3370 for (i = 0; i < 6 ;i++) 3371 enaddr[i] = bbr(enaddr[i]); 3372 } 3373 #endif /* DP83820 */ 3374 3375 /* 3376 * sip_mediastatus: [ifmedia interface function] 3377 * 3378 * Get the current interface media status. 3379 */ 3380 void 3381 SIP_DECL(mediastatus)(struct ifnet *ifp, struct ifmediareq *ifmr) 3382 { 3383 struct sip_softc *sc = ifp->if_softc; 3384 3385 mii_pollstat(&sc->sc_mii); 3386 ifmr->ifm_status = sc->sc_mii.mii_media_status; 3387 ifmr->ifm_active = sc->sc_mii.mii_media_active; 3388 } 3389 3390 /* 3391 * sip_mediachange: [ifmedia interface function] 3392 * 3393 * Set hardware to newly-selected media. 3394 */ 3395 int 3396 SIP_DECL(mediachange)(struct ifnet *ifp) 3397 { 3398 struct sip_softc *sc = ifp->if_softc; 3399 3400 if (ifp->if_flags & IFF_UP) 3401 mii_mediachg(&sc->sc_mii); 3402 return (0); 3403 } 3404
Indexes created Tue Sep 30 11:09:46 GMT 2025