1 /* $NetBSD: if_kse.c,v 1.22 2010/04/05 07:20:26 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Tohru Nishimura. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: if_kse.c,v 1.22 2010/04/05 07:20:26 joerg Exp $"); 34 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/callout.h> 39 #include <sys/mbuf.h> 40 #include <sys/malloc.h> 41 #include <sys/kernel.h> 42 #include <sys/ioctl.h> 43 #include <sys/errno.h> 44 #include <sys/device.h> 45 #include <sys/queue.h> 46 47 #include <machine/endian.h> 48 #include <sys/bus.h> 49 #include <sys/intr.h> 50 51 #include <net/if.h> 52 #include <net/if_media.h> 53 #include <net/if_dl.h> 54 #include <net/if_ether.h> 55 56 #include <net/bpf.h> 57 58 #include <dev/pci/pcivar.h> 59 #include <dev/pci/pcireg.h> 60 #include <dev/pci/pcidevs.h> 61 62 #define CSR_READ_4(sc, off) \ 63 bus_space_read_4(sc->sc_st, sc->sc_sh, off) 64 #define CSR_WRITE_4(sc, off, val) \ 65 bus_space_write_4(sc->sc_st, sc->sc_sh, off, val) 66 #define CSR_READ_2(sc, off) \ 67 bus_space_read_2(sc->sc_st, sc->sc_sh, off) 68 #define CSR_WRITE_2(sc, off, val) \ 69 bus_space_write_2(sc->sc_st, sc->sc_sh, off, val) 70 71 #define MDTXC 0x000 /* DMA transmit control */ 72 #define MDRXC 0x004 /* DMA receive control */ 73 #define MDTSC 0x008 /* DMA transmit start */ 74 #define MDRSC 0x00c /* DMA receive start */ 75 #define TDLB 0x010 /* transmit descriptor list base */ 76 #define RDLB 0x014 /* receive descriptor list base */ 77 #define MTR0 0x020 /* multicast table 31:0 */ 78 #define MTR1 0x024 /* multicast table 63:32 */ 79 #define INTEN 0x028 /* interrupt enable */ 80 #define INTST 0x02c /* interrupt status */ 81 #define MARL 0x200 /* MAC address low */ 82 #define MARM 0x202 /* MAC address middle */ 83 #define MARH 0x204 /* MAC address high */ 84 #define GRR 0x216 /* global reset */ 85 #define CIDR 0x400 /* chip ID and enable */ 86 #define CGCR 0x40a /* chip global control */ 87 #define IACR 0x4a0 /* indirect access control */ 88 #define IADR1 0x4a2 /* indirect access data 66:63 */ 89 #define IADR2 0x4a4 /* indirect access data 47:32 */ 90 #define IADR3 0x4a6 /* indirect access data 63:48 */ 91 #define IADR4 0x4a8 /* indirect access data 15:0 */ 92 #define IADR5 0x4aa /* indirect access data 31:16 */ 93 #define P1CR4 0x512 /* port 1 control 4 */ 94 #define P1SR 0x514 /* port 1 status */ 95 #define P2CR4 0x532 /* port 2 control 4 */ 96 #define P2SR 0x534 /* port 2 status */ 97 98 #define TXC_BS_MSK 0x3f000000 /* burst size */ 99 #define TXC_BS_SFT (24) /* 1,2,4,8,16,32 or 0 for unlimited */ 100 #define TXC_UCG (1U<<18) /* generate UDP checksum */ 101 #define TXC_TCG (1U<<17) /* generate TCP checksum */ 102 #define TXC_ICG (1U<<16) /* generate IP checksum */ 103 #define TXC_FCE (1U<<9) /* enable flowcontrol */ 104 #define TXC_EP (1U<<2) /* enable automatic padding */ 105 #define TXC_AC (1U<<1) /* add CRC to frame */ 106 #define TXC_TEN (1) /* enable DMA to run */ 107 108 #define RXC_BS_MSK 0x3f000000 /* burst size */ 109 #define RXC_BS_SFT (24) /* 1,2,4,8,16,32 or 0 for unlimited */ 110 #define RXC_IHAE (1U<<19) /* IP header alignment enable */ 111 #define RXC_UCC (1U<<18) /* run UDP checksum */ 112 #define RXC_TCC (1U<<17) /* run TDP checksum */ 113 #define RXC_ICC (1U<<16) /* run IP checksum */ 114 #define RXC_FCE (1U<<9) /* enable flowcontrol */ 115 #define RXC_RB (1U<<6) /* receive broadcast frame */ 116 #define RXC_RM (1U<<5) /* receive multicast frame */ 117 #define RXC_RU (1U<<4) /* receive unicast frame */ 118 #define RXC_RE (1U<<3) /* accept error frame */ 119 #define RXC_RA (1U<<2) /* receive all frame */ 120 #define RXC_MHTE (1U<<1) /* use multicast hash table */ 121 #define RXC_REN (1) /* enable DMA to run */ 122 123 #define INT_DMLCS (1U<<31) /* link status change */ 124 #define INT_DMTS (1U<<30) /* sending desc. has posted Tx done */ 125 #define INT_DMRS (1U<<29) /* frame was received */ 126 #define INT_DMRBUS (1U<<27) /* Rx descriptor pool is full */ 127 128 #define T0_OWN (1U<<31) /* desc is ready to Tx */ 129 130 #define R0_OWN (1U<<31) /* desc is empty */ 131 #define R0_FS (1U<<30) /* first segment of frame */ 132 #define R0_LS (1U<<29) /* last segment of frame */ 133 #define R0_IPE (1U<<28) /* IP checksum error */ 134 #define R0_TCPE (1U<<27) /* TCP checksum error */ 135 #define R0_UDPE (1U<<26) /* UDP checksum error */ 136 #define R0_ES (1U<<25) /* error summary */ 137 #define R0_MF (1U<<24) /* multicast frame */ 138 #define R0_SPN 0x00300000 /* 21:20 switch port 1/2 */ 139 #define R0_ALIGN 0x00300000 /* 21:20 (KSZ8692P) Rx align amount */ 140 #define R0_RE (1U<<19) /* MII reported error */ 141 #define R0_TL (1U<<18) /* frame too long, beyond 1518 */ 142 #define R0_RF (1U<<17) /* damaged runt frame */ 143 #define R0_CE (1U<<16) /* CRC error */ 144 #define R0_FT (1U<<15) /* frame type */ 145 #define R0_FL_MASK 0x7ff /* frame length 10:0 */ 146 147 #define T1_IC (1U<<31) /* post interrupt on complete */ 148 #define T1_FS (1U<<30) /* first segment of frame */ 149 #define T1_LS (1U<<29) /* last segment of frame */ 150 #define T1_IPCKG (1U<<28) /* generate IP checksum */ 151 #define T1_TCPCKG (1U<<27) /* generate TCP checksum */ 152 #define T1_UDPCKG (1U<<26) /* generate UDP checksum */ 153 #define T1_TER (1U<<25) /* end of ring */ 154 #define T1_SPN 0x00300000 /* 21:20 switch port 1/2 */ 155 #define T1_TBS_MASK 0x7ff /* segment size 10:0 */ 156 157 #define R1_RER (1U<<25) /* end of ring */ 158 #define R1_RBS_MASK 0x7fc /* segment size 10:0 */ 159 160 #define KSE_NTXSEGS 16 161 #define KSE_TXQUEUELEN 64 162 #define KSE_TXQUEUELEN_MASK (KSE_TXQUEUELEN - 1) 163 #define KSE_TXQUEUE_GC (KSE_TXQUEUELEN / 4) 164 #define KSE_NTXDESC 256 165 #define KSE_NTXDESC_MASK (KSE_NTXDESC - 1) 166 #define KSE_NEXTTX(x) (((x) + 1) & KSE_NTXDESC_MASK) 167 #define KSE_NEXTTXS(x) (((x) + 1) & KSE_TXQUEUELEN_MASK) 168 169 #define KSE_NRXDESC 64 170 #define KSE_NRXDESC_MASK (KSE_NRXDESC - 1) 171 #define KSE_NEXTRX(x) (((x) + 1) & KSE_NRXDESC_MASK) 172 173 struct tdes { 174 uint32_t t0, t1, t2, t3; 175 }; 176 177 struct rdes { 178 uint32_t r0, r1, r2, r3; 179 }; 180 181 struct kse_control_data { 182 struct tdes kcd_txdescs[KSE_NTXDESC]; 183 struct rdes kcd_rxdescs[KSE_NRXDESC]; 184 }; 185 #define KSE_CDOFF(x) offsetof(struct kse_control_data, x) 186 #define KSE_CDTXOFF(x) KSE_CDOFF(kcd_txdescs[(x)]) 187 #define KSE_CDRXOFF(x) KSE_CDOFF(kcd_rxdescs[(x)]) 188 189 struct kse_txsoft { 190 struct mbuf *txs_mbuf; /* head of our mbuf chain */ 191 bus_dmamap_t txs_dmamap; /* our DMA map */ 192 int txs_firstdesc; /* first descriptor in packet */ 193 int txs_lastdesc; /* last descriptor in packet */ 194 int txs_ndesc; /* # of descriptors used */ 195 }; 196 197 struct kse_rxsoft { 198 struct mbuf *rxs_mbuf; /* head of our mbuf chain */ 199 bus_dmamap_t rxs_dmamap; /* our DMA map */ 200 }; 201 202 struct kse_softc { 203 struct device sc_dev; /* generic device information */ 204 bus_space_tag_t sc_st; /* bus space tag */ 205 bus_space_handle_t sc_sh; /* bus space handle */ 206 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 207 struct ethercom sc_ethercom; /* Ethernet common data */ 208 void *sc_ih; /* interrupt cookie */ 209 210 struct ifmedia sc_media; /* ifmedia information */ 211 int sc_media_status; /* PHY */ 212 int sc_media_active; /* PHY */ 213 callout_t sc_callout; /* MII tick callout */ 214 callout_t sc_stat_ch; /* statistics counter callout */ 215 216 bus_dmamap_t sc_cddmamap; /* control data DMA map */ 217 #define sc_cddma sc_cddmamap->dm_segs[0].ds_addr 218 219 struct kse_control_data *sc_control_data; 220 #define sc_txdescs sc_control_data->kcd_txdescs 221 #define sc_rxdescs sc_control_data->kcd_rxdescs 222 223 struct kse_txsoft sc_txsoft[KSE_TXQUEUELEN]; 224 struct kse_rxsoft sc_rxsoft[KSE_NRXDESC]; 225 int sc_txfree; /* number of free Tx descriptors */ 226 int sc_txnext; /* next ready Tx descriptor */ 227 int sc_txsfree; /* number of free Tx jobs */ 228 int sc_txsnext; /* next ready Tx job */ 229 int sc_txsdirty; /* dirty Tx jobs */ 230 int sc_rxptr; /* next ready Rx descriptor/descsoft */ 231 232 uint32_t sc_txc, sc_rxc; 233 uint32_t sc_t1csum; 234 int sc_mcsum; 235 uint32_t sc_inten; 236 237 uint32_t sc_chip; 238 uint8_t sc_altmac[16][ETHER_ADDR_LEN]; 239 uint16_t sc_vlan[16]; 240 241 #ifdef KSE_EVENT_COUNTERS 242 struct ksext { 243 char evcntname[3][8]; 244 struct evcnt pev[3][34]; 245 } sc_ext; /* switch statistics */ 246 #endif 247 }; 248 249 #define KSE_CDTXADDR(sc, x) ((sc)->sc_cddma + KSE_CDTXOFF((x))) 250 #define KSE_CDRXADDR(sc, x) ((sc)->sc_cddma + KSE_CDRXOFF((x))) 251 252 #define KSE_CDTXSYNC(sc, x, n, ops) \ 253 do { \ 254 int __x, __n; \ 255 \ 256 __x = (x); \ 257 __n = (n); \ 258 \ 259 /* If it will wrap around, sync to the end of the ring. */ \ 260 if ((__x + __n) > KSE_NTXDESC) { \ 261 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 262 KSE_CDTXOFF(__x), sizeof(struct tdes) * \ 263 (KSE_NTXDESC - __x), (ops)); \ 264 __n -= (KSE_NTXDESC - __x); \ 265 __x = 0; \ 266 } \ 267 \ 268 /* Now sync whatever is left. */ \ 269 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 270 KSE_CDTXOFF(__x), sizeof(struct tdes) * __n, (ops)); \ 271 } while (/*CONSTCOND*/0) 272 273 #define KSE_CDRXSYNC(sc, x, ops) \ 274 do { \ 275 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_cddmamap, \ 276 KSE_CDRXOFF((x)), sizeof(struct rdes), (ops)); \ 277 } while (/*CONSTCOND*/0) 278 279 #define KSE_INIT_RXDESC(sc, x) \ 280 do { \ 281 struct kse_rxsoft *__rxs = &(sc)->sc_rxsoft[(x)]; \ 282 struct rdes *__rxd = &(sc)->sc_rxdescs[(x)]; \ 283 struct mbuf *__m = __rxs->rxs_mbuf; \ 284 \ 285 __m->m_data = __m->m_ext.ext_buf; \ 286 __rxd->r2 = __rxs->rxs_dmamap->dm_segs[0].ds_addr; \ 287 __rxd->r1 = R1_RBS_MASK /* __m->m_ext.ext_size */; \ 288 __rxd->r0 = R0_OWN; \ 289 KSE_CDRXSYNC((sc), (x), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); \ 290 } while (/*CONSTCOND*/0) 291 292 u_int kse_burstsize = 8; /* DMA burst length tuning knob */ 293 294 #ifdef KSEDIAGNOSTIC 295 u_int kse_monitor_rxintr; /* fragmented UDP csum HW bug hook */ 296 #endif 297 298 static int kse_match(device_t, cfdata_t, void *); 299 static void kse_attach(device_t, device_t, void *); 300 301 CFATTACH_DECL(kse, sizeof(struct kse_softc), 302 kse_match, kse_attach, NULL, NULL); 303 304 static int kse_ioctl(struct ifnet *, u_long, void *); 305 static void kse_start(struct ifnet *); 306 static void kse_watchdog(struct ifnet *); 307 static int kse_init(struct ifnet *); 308 static void kse_stop(struct ifnet *, int); 309 static void kse_reset(struct kse_softc *); 310 static void kse_set_filter(struct kse_softc *); 311 static int add_rxbuf(struct kse_softc *, int); 312 static void rxdrain(struct kse_softc *); 313 static int kse_intr(void *); 314 static void rxintr(struct kse_softc *); 315 static void txreap(struct kse_softc *); 316 static void lnkchg(struct kse_softc *); 317 static int ifmedia_upd(struct ifnet *); 318 static void ifmedia_sts(struct ifnet *, struct ifmediareq *); 319 static void phy_tick(void *); 320 static int ifmedia2_upd(struct ifnet *); 321 static void ifmedia2_sts(struct ifnet *, struct ifmediareq *); 322 #ifdef KSE_EVENT_COUNTERS 323 static void stat_tick(void *); 324 static void zerostats(struct kse_softc *); 325 #endif 326 327 static int 328 kse_match(device_t parent, cfdata_t match, void *aux) 329 { 330 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 331 332 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_MICREL && 333 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MICREL_KSZ8842 || 334 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MICREL_KSZ8841) && 335 PCI_CLASS(pa->pa_class) == PCI_CLASS_NETWORK) 336 return 1; 337 338 return 0; 339 } 340 341 static void 342 kse_attach(device_t parent, device_t self, void *aux) 343 { 344 struct kse_softc *sc = device_private(self); 345 struct pci_attach_args *pa = aux; 346 pci_chipset_tag_t pc = pa->pa_pc; 347 pci_intr_handle_t ih; 348 const char *intrstr; 349 struct ifnet *ifp; 350 struct ifmedia *ifm; 351 uint8_t enaddr[ETHER_ADDR_LEN]; 352 bus_dma_segment_t seg; 353 int i, p, error, nseg; 354 pcireg_t pmode; 355 int pmreg; 356 357 if (pci_mapreg_map(pa, 0x10, 358 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 359 0, &sc->sc_st, &sc->sc_sh, NULL, NULL) != 0) { 360 printf(": unable to map device registers\n"); 361 return; 362 } 363 364 sc->sc_dmat = pa->pa_dmat; 365 366 /* Make sure bus mastering is enabled. */ 367 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 368 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 369 PCI_COMMAND_MASTER_ENABLE); 370 371 /* Get it out of power save mode, if needed. */ 372 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) { 373 pmode = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR) & 374 PCI_PMCSR_STATE_MASK; 375 if (pmode == PCI_PMCSR_STATE_D3) { 376 /* 377 * The card has lost all configuration data in 378 * this state, so punt. 379 */ 380 printf("%s: unable to wake from power state D3\n", 381 device_xname(&sc->sc_dev)); 382 return; 383 } 384 if (pmode != PCI_PMCSR_STATE_D0) { 385 printf("%s: waking up from power date D%d\n", 386 device_xname(&sc->sc_dev), pmode); 387 pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR, 388 PCI_PMCSR_STATE_D0); 389 } 390 } 391 392 sc->sc_chip = PCI_PRODUCT(pa->pa_id); 393 printf(": Micrel KSZ%04x Ethernet (rev. 0x%02x)\n", 394 sc->sc_chip, PCI_REVISION(pa->pa_class)); 395 396 /* 397 * Read the Ethernet address from the EEPROM. 398 */ 399 i = CSR_READ_2(sc, MARL); 400 enaddr[5] = i; enaddr[4] = i >> 8; 401 i = CSR_READ_2(sc, MARM); 402 enaddr[3] = i; enaddr[2] = i >> 8; 403 i = CSR_READ_2(sc, MARH); 404 enaddr[1] = i; enaddr[0] = i >> 8; 405 printf("%s: Ethernet address: %s\n", 406 device_xname(&sc->sc_dev), ether_sprintf(enaddr)); 407 408 /* 409 * Enable chip function. 410 */ 411 CSR_WRITE_2(sc, CIDR, 1); 412 413 /* 414 * Map and establish our interrupt. 415 */ 416 if (pci_intr_map(pa, &ih)) { 417 aprint_error_dev(&sc->sc_dev, "unable to map interrupt\n"); 418 return; 419 } 420 intrstr = pci_intr_string(pc, ih); 421 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, kse_intr, sc); 422 if (sc->sc_ih == NULL) { 423 aprint_error_dev(&sc->sc_dev, "unable to establish interrupt"); 424 if (intrstr != NULL) 425 aprint_error(" at %s", intrstr); 426 aprint_error("\n"); 427 return; 428 } 429 aprint_normal_dev(&sc->sc_dev, "interrupting at %s\n", intrstr); 430 431 /* 432 * Allocate the control data structures, and create and load the 433 * DMA map for it. 434 */ 435 error = bus_dmamem_alloc(sc->sc_dmat, 436 sizeof(struct kse_control_data), PAGE_SIZE, 0, &seg, 1, &nseg, 0); 437 if (error != 0) { 438 aprint_error_dev(&sc->sc_dev, "unable to allocate control data, error = %d\n", error); 439 goto fail_0; 440 } 441 error = bus_dmamem_map(sc->sc_dmat, &seg, nseg, 442 sizeof(struct kse_control_data), (void **)&sc->sc_control_data, 443 BUS_DMA_COHERENT); 444 if (error != 0) { 445 aprint_error_dev(&sc->sc_dev, "unable to map control data, error = %d\n", error); 446 goto fail_1; 447 } 448 error = bus_dmamap_create(sc->sc_dmat, 449 sizeof(struct kse_control_data), 1, 450 sizeof(struct kse_control_data), 0, 0, &sc->sc_cddmamap); 451 if (error != 0) { 452 aprint_error_dev(&sc->sc_dev, "unable to create control data DMA map, " 453 "error = %d\n", error); 454 goto fail_2; 455 } 456 error = bus_dmamap_load(sc->sc_dmat, sc->sc_cddmamap, 457 sc->sc_control_data, sizeof(struct kse_control_data), NULL, 0); 458 if (error != 0) { 459 aprint_error_dev(&sc->sc_dev, "unable to load control data DMA map, error = %d\n", 460 error); 461 goto fail_3; 462 } 463 for (i = 0; i < KSE_TXQUEUELEN; i++) { 464 if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 465 KSE_NTXSEGS, MCLBYTES, 0, 0, 466 &sc->sc_txsoft[i].txs_dmamap)) != 0) { 467 aprint_error_dev(&sc->sc_dev, "unable to create tx DMA map %d, " 468 "error = %d\n", i, error); 469 goto fail_4; 470 } 471 } 472 for (i = 0; i < KSE_NRXDESC; i++) { 473 if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 474 1, MCLBYTES, 0, 0, &sc->sc_rxsoft[i].rxs_dmamap)) != 0) { 475 aprint_error_dev(&sc->sc_dev, "unable to create rx DMA map %d, " 476 "error = %d\n", i, error); 477 goto fail_5; 478 } 479 sc->sc_rxsoft[i].rxs_mbuf = NULL; 480 } 481 482 callout_init(&sc->sc_callout, 0); 483 callout_init(&sc->sc_stat_ch, 0); 484 485 ifm = &sc->sc_media; 486 if (sc->sc_chip == 0x8841) { 487 ifmedia_init(ifm, 0, ifmedia_upd, ifmedia_sts); 488 ifmedia_add(ifm, IFM_ETHER|IFM_10_T, 0, NULL); 489 ifmedia_add(ifm, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); 490 ifmedia_add(ifm, IFM_ETHER|IFM_100_TX, 0, NULL); 491 ifmedia_add(ifm, IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL); 492 ifmedia_add(ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 493 ifmedia_set(ifm, IFM_ETHER|IFM_AUTO); 494 } 495 else { 496 ifmedia_init(ifm, 0, ifmedia2_upd, ifmedia2_sts); 497 ifmedia_add(ifm, IFM_ETHER|IFM_AUTO, 0, NULL); 498 ifmedia_set(ifm, IFM_ETHER|IFM_AUTO); 499 } 500 501 printf("%s: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto\n", 502 device_xname(&sc->sc_dev)); 503 504 ifp = &sc->sc_ethercom.ec_if; 505 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 506 ifp->if_softc = sc; 507 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 508 ifp->if_ioctl = kse_ioctl; 509 ifp->if_start = kse_start; 510 ifp->if_watchdog = kse_watchdog; 511 ifp->if_init = kse_init; 512 ifp->if_stop = kse_stop; 513 IFQ_SET_READY(&ifp->if_snd); 514 515 /* 516 * KSZ8842 can handle 802.1Q VLAN-sized frames, 517 * can do IPv4, TCPv4, and UDPv4 checksums in hardware. 518 */ 519 sc->sc_ethercom.ec_capabilities |= ETHERCAP_VLAN_MTU; 520 ifp->if_capabilities |= 521 IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx | 522 IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx | 523 IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx; 524 525 if_attach(ifp); 526 ether_ifattach(ifp, enaddr); 527 528 p = (sc->sc_chip == 0x8842) ? 3 : 1; 529 #ifdef KSE_EVENT_COUNTERS 530 for (i = 0; i < p; i++) { 531 struct ksext *ee = &sc->sc_ext; 532 sprintf(ee->evcntname[i], "%s.%d", device_xname(&sc->sc_dev), i+1); 533 evcnt_attach_dynamic(&ee->pev[i][0], EVCNT_TYPE_MISC, 534 NULL, ee->evcntname[i], "RxLoPriotyByte"); 535 evcnt_attach_dynamic(&ee->pev[i][1], EVCNT_TYPE_MISC, 536 NULL, ee->evcntname[i], "RxHiPriotyByte"); 537 evcnt_attach_dynamic(&ee->pev[i][2], EVCNT_TYPE_MISC, 538 NULL, ee->evcntname[i], "RxUndersizePkt"); 539 evcnt_attach_dynamic(&ee->pev[i][3], EVCNT_TYPE_MISC, 540 NULL, ee->evcntname[i], "RxFragments"); 541 evcnt_attach_dynamic(&ee->pev[i][4], EVCNT_TYPE_MISC, 542 NULL, ee->evcntname[i], "RxOversize"); 543 evcnt_attach_dynamic(&ee->pev[i][5], EVCNT_TYPE_MISC, 544 NULL, ee->evcntname[i], "RxJabbers"); 545 evcnt_attach_dynamic(&ee->pev[i][6], EVCNT_TYPE_MISC, 546 NULL, ee->evcntname[i], "RxSymbolError"); 547 evcnt_attach_dynamic(&ee->pev[i][7], EVCNT_TYPE_MISC, 548 NULL, ee->evcntname[i], "RxCRCError"); 549 evcnt_attach_dynamic(&ee->pev[i][8], EVCNT_TYPE_MISC, 550 NULL, ee->evcntname[i], "RxAlignmentError"); 551 evcnt_attach_dynamic(&ee->pev[i][9], EVCNT_TYPE_MISC, 552 NULL, ee->evcntname[i], "RxControl8808Pkts"); 553 evcnt_attach_dynamic(&ee->pev[i][10], EVCNT_TYPE_MISC, 554 NULL, ee->evcntname[i], "RxPausePkts"); 555 evcnt_attach_dynamic(&ee->pev[i][11], EVCNT_TYPE_MISC, 556 NULL, ee->evcntname[i], "RxBroadcast"); 557 evcnt_attach_dynamic(&ee->pev[i][12], EVCNT_TYPE_MISC, 558 NULL, ee->evcntname[i], "RxMulticast"); 559 evcnt_attach_dynamic(&ee->pev[i][13], EVCNT_TYPE_MISC, 560 NULL, ee->evcntname[i], "RxUnicast"); 561 evcnt_attach_dynamic(&ee->pev[i][14], EVCNT_TYPE_MISC, 562 NULL, ee->evcntname[i], "Rx64Octets"); 563 evcnt_attach_dynamic(&ee->pev[i][15], EVCNT_TYPE_MISC, 564 NULL, ee->evcntname[i], "Rx65To127Octets"); 565 evcnt_attach_dynamic(&ee->pev[i][16], EVCNT_TYPE_MISC, 566 NULL, ee->evcntname[i], "Rx128To255Octets"); 567 evcnt_attach_dynamic(&ee->pev[i][17], EVCNT_TYPE_MISC, 568 NULL, ee->evcntname[i], "Rx255To511Octets"); 569 evcnt_attach_dynamic(&ee->pev[i][18], EVCNT_TYPE_MISC, 570 NULL, ee->evcntname[i], "Rx512To1023Octets"); 571 evcnt_attach_dynamic(&ee->pev[i][19], EVCNT_TYPE_MISC, 572 NULL, ee->evcntname[i], "Rx1024To1522Octets"); 573 evcnt_attach_dynamic(&ee->pev[i][20], EVCNT_TYPE_MISC, 574 NULL, ee->evcntname[i], "TxLoPriotyByte"); 575 evcnt_attach_dynamic(&ee->pev[i][21], EVCNT_TYPE_MISC, 576 NULL, ee->evcntname[i], "TxHiPriotyByte"); 577 evcnt_attach_dynamic(&ee->pev[i][22], EVCNT_TYPE_MISC, 578 NULL, ee->evcntname[i], "TxLateCollision"); 579 evcnt_attach_dynamic(&ee->pev[i][23], EVCNT_TYPE_MISC, 580 NULL, ee->evcntname[i], "TxPausePkts"); 581 evcnt_attach_dynamic(&ee->pev[i][24], EVCNT_TYPE_MISC, 582 NULL, ee->evcntname[i], "TxBroadcastPkts"); 583 evcnt_attach_dynamic(&ee->pev[i][25], EVCNT_TYPE_MISC, 584 NULL, ee->evcntname[i], "TxMulticastPkts"); 585 evcnt_attach_dynamic(&ee->pev[i][26], EVCNT_TYPE_MISC, 586 NULL, ee->evcntname[i], "TxUnicastPkts"); 587 evcnt_attach_dynamic(&ee->pev[i][27], EVCNT_TYPE_MISC, 588 NULL, ee->evcntname[i], "TxDeferred"); 589 evcnt_attach_dynamic(&ee->pev[i][28], EVCNT_TYPE_MISC, 590 NULL, ee->evcntname[i], "TxTotalCollision"); 591 evcnt_attach_dynamic(&ee->pev[i][29], EVCNT_TYPE_MISC, 592 NULL, ee->evcntname[i], "TxExcessiveCollision"); 593 evcnt_attach_dynamic(&ee->pev[i][30], EVCNT_TYPE_MISC, 594 NULL, ee->evcntname[i], "TxSingleCollision"); 595 evcnt_attach_dynamic(&ee->pev[i][31], EVCNT_TYPE_MISC, 596 NULL, ee->evcntname[i], "TxMultipleCollision"); 597 evcnt_attach_dynamic(&ee->pev[i][32], EVCNT_TYPE_MISC, 598 NULL, ee->evcntname[i], "TxDropPkts"); 599 evcnt_attach_dynamic(&ee->pev[i][33], EVCNT_TYPE_MISC, 600 NULL, ee->evcntname[i], "RxDropPkts"); 601 } 602 #endif 603 return; 604 605 fail_5: 606 for (i = 0; i < KSE_NRXDESC; i++) { 607 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 608 bus_dmamap_destroy(sc->sc_dmat, 609 sc->sc_rxsoft[i].rxs_dmamap); 610 } 611 fail_4: 612 for (i = 0; i < KSE_TXQUEUELEN; i++) { 613 if (sc->sc_txsoft[i].txs_dmamap != NULL) 614 bus_dmamap_destroy(sc->sc_dmat, 615 sc->sc_txsoft[i].txs_dmamap); 616 } 617 bus_dmamap_unload(sc->sc_dmat, sc->sc_cddmamap); 618 fail_3: 619 bus_dmamap_destroy(sc->sc_dmat, sc->sc_cddmamap); 620 fail_2: 621 bus_dmamem_unmap(sc->sc_dmat, (void *)sc->sc_control_data, 622 sizeof(struct kse_control_data)); 623 fail_1: 624 bus_dmamem_free(sc->sc_dmat, &seg, nseg); 625 fail_0: 626 return; 627 } 628 629 static int 630 kse_ioctl(struct ifnet *ifp, u_long cmd, void *data) 631 { 632 struct kse_softc *sc = ifp->if_softc; 633 struct ifreq *ifr = (struct ifreq *)data; 634 int s, error; 635 636 s = splnet(); 637 638 switch (cmd) { 639 case SIOCSIFMEDIA: 640 case SIOCGIFMEDIA: 641 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 642 break; 643 644 default: 645 if ((error = ether_ioctl(ifp, cmd, data)) != ENETRESET) 646 break; 647 648 error = 0; 649 650 if (cmd == SIOCSIFCAP) 651 error = (*ifp->if_init)(ifp); 652 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 653 ; 654 else if (ifp->if_flags & IFF_RUNNING) { 655 /* 656 * Multicast list has changed; set the hardware filter 657 * accordingly. 658 */ 659 kse_set_filter(sc); 660 } 661 break; 662 } 663 664 kse_start(ifp); 665 666 splx(s); 667 return error; 668 } 669 670 static int 671 kse_init(struct ifnet *ifp) 672 { 673 struct kse_softc *sc = ifp->if_softc; 674 uint32_t paddr; 675 int i, error = 0; 676 677 /* cancel pending I/O */ 678 kse_stop(ifp, 0); 679 680 /* reset all registers but PCI configuration */ 681 kse_reset(sc); 682 683 /* craft Tx descriptor ring */ 684 memset(sc->sc_txdescs, 0, sizeof(sc->sc_txdescs)); 685 for (i = 0, paddr = KSE_CDTXADDR(sc, 1); i < KSE_NTXDESC - 1; i++) { 686 sc->sc_txdescs[i].t3 = paddr; 687 paddr += sizeof(struct tdes); 688 } 689 sc->sc_txdescs[KSE_NTXDESC - 1].t3 = KSE_CDTXADDR(sc, 0); 690 KSE_CDTXSYNC(sc, 0, KSE_NTXDESC, 691 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 692 sc->sc_txfree = KSE_NTXDESC; 693 sc->sc_txnext = 0; 694 695 for (i = 0; i < KSE_TXQUEUELEN; i++) 696 sc->sc_txsoft[i].txs_mbuf = NULL; 697 sc->sc_txsfree = KSE_TXQUEUELEN; 698 sc->sc_txsnext = 0; 699 sc->sc_txsdirty = 0; 700 701 /* craft Rx descriptor ring */ 702 memset(sc->sc_rxdescs, 0, sizeof(sc->sc_rxdescs)); 703 for (i = 0, paddr = KSE_CDRXADDR(sc, 1); i < KSE_NRXDESC - 1; i++) { 704 sc->sc_rxdescs[i].r3 = paddr; 705 paddr += sizeof(struct rdes); 706 } 707 sc->sc_rxdescs[KSE_NRXDESC - 1].r3 = KSE_CDRXADDR(sc, 0); 708 for (i = 0; i < KSE_NRXDESC; i++) { 709 if (sc->sc_rxsoft[i].rxs_mbuf == NULL) { 710 if ((error = add_rxbuf(sc, i)) != 0) { 711 printf("%s: unable to allocate or map rx " 712 "buffer %d, error = %d\n", 713 device_xname(&sc->sc_dev), i, error); 714 rxdrain(sc); 715 goto out; 716 } 717 } 718 else 719 KSE_INIT_RXDESC(sc, i); 720 } 721 sc->sc_rxptr = 0; 722 723 /* hand Tx/Rx rings to HW */ 724 CSR_WRITE_4(sc, TDLB, KSE_CDTXADDR(sc, 0)); 725 CSR_WRITE_4(sc, RDLB, KSE_CDRXADDR(sc, 0)); 726 727 sc->sc_txc = TXC_TEN | TXC_EP | TXC_AC | TXC_FCE; 728 sc->sc_rxc = RXC_REN | RXC_RU | RXC_FCE; 729 if (ifp->if_flags & IFF_PROMISC) 730 sc->sc_rxc |= RXC_RA; 731 if (ifp->if_flags & IFF_BROADCAST) 732 sc->sc_rxc |= RXC_RB; 733 sc->sc_t1csum = sc->sc_mcsum = 0; 734 if (ifp->if_capenable & IFCAP_CSUM_IPv4_Rx) { 735 sc->sc_rxc |= RXC_ICC; 736 sc->sc_mcsum |= M_CSUM_IPv4; 737 } 738 if (ifp->if_capenable & IFCAP_CSUM_IPv4_Tx) { 739 sc->sc_txc |= TXC_ICG; 740 sc->sc_t1csum |= T1_IPCKG; 741 } 742 if (ifp->if_capenable & IFCAP_CSUM_TCPv4_Rx) { 743 sc->sc_rxc |= RXC_TCC; 744 sc->sc_mcsum |= M_CSUM_TCPv4; 745 } 746 if (ifp->if_capenable & IFCAP_CSUM_TCPv4_Tx) { 747 sc->sc_txc |= TXC_TCG; 748 sc->sc_t1csum |= T1_TCPCKG; 749 } 750 if (ifp->if_capenable & IFCAP_CSUM_UDPv4_Rx) { 751 sc->sc_rxc |= RXC_UCC; 752 sc->sc_mcsum |= M_CSUM_UDPv4; 753 } 754 if (ifp->if_capenable & IFCAP_CSUM_UDPv4_Tx) { 755 sc->sc_txc |= TXC_UCG; 756 sc->sc_t1csum |= T1_UDPCKG; 757 } 758 sc->sc_txc |= (kse_burstsize << TXC_BS_SFT); 759 sc->sc_rxc |= (kse_burstsize << RXC_BS_SFT); 760 761 /* build multicast hash filter if necessary */ 762 kse_set_filter(sc); 763 764 /* set current media */ 765 (void)ifmedia_upd(ifp); 766 767 /* enable transmitter and receiver */ 768 CSR_WRITE_4(sc, MDTXC, sc->sc_txc); 769 CSR_WRITE_4(sc, MDRXC, sc->sc_rxc); 770 CSR_WRITE_4(sc, MDRSC, 1); 771 772 /* enable interrupts */ 773 sc->sc_inten = INT_DMTS|INT_DMRS|INT_DMRBUS; 774 if (sc->sc_chip == 0x8841) 775 sc->sc_inten |= INT_DMLCS; 776 CSR_WRITE_4(sc, INTST, ~0); 777 CSR_WRITE_4(sc, INTEN, sc->sc_inten); 778 779 ifp->if_flags |= IFF_RUNNING; 780 ifp->if_flags &= ~IFF_OACTIVE; 781 782 if (sc->sc_chip == 0x8841) { 783 /* start one second timer */ 784 callout_reset(&sc->sc_callout, hz, phy_tick, sc); 785 } 786 #ifdef KSE_EVENT_COUNTERS 787 /* start statistics gather 1 minute timer */ 788 zerostats(sc); 789 callout_reset(&sc->sc_stat_ch, hz * 60, stat_tick, sc); 790 #endif 791 792 out: 793 if (error) { 794 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 795 ifp->if_timer = 0; 796 printf("%s: interface not running\n", device_xname(&sc->sc_dev)); 797 } 798 return error; 799 } 800 801 static void 802 kse_stop(struct ifnet *ifp, int disable) 803 { 804 struct kse_softc *sc = ifp->if_softc; 805 struct kse_txsoft *txs; 806 int i; 807 808 if (sc->sc_chip == 0x8841) 809 callout_stop(&sc->sc_callout); 810 callout_stop(&sc->sc_stat_ch); 811 812 sc->sc_txc &= ~TXC_TEN; 813 sc->sc_rxc &= ~RXC_REN; 814 CSR_WRITE_4(sc, MDTXC, sc->sc_txc); 815 CSR_WRITE_4(sc, MDRXC, sc->sc_rxc); 816 817 for (i = 0; i < KSE_TXQUEUELEN; i++) { 818 txs = &sc->sc_txsoft[i]; 819 if (txs->txs_mbuf != NULL) { 820 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 821 m_freem(txs->txs_mbuf); 822 txs->txs_mbuf = NULL; 823 } 824 } 825 826 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 827 ifp->if_timer = 0; 828 829 if (disable) 830 rxdrain(sc); 831 } 832 833 static void 834 kse_reset(struct kse_softc *sc) 835 { 836 837 CSR_WRITE_2(sc, GRR, 1); 838 delay(1000); /* PDF does not mention the delay amount */ 839 CSR_WRITE_2(sc, GRR, 0); 840 841 CSR_WRITE_2(sc, CIDR, 1); 842 } 843 844 static void 845 kse_watchdog(struct ifnet *ifp) 846 { 847 struct kse_softc *sc = ifp->if_softc; 848 849 /* 850 * Since we're not interrupting every packet, sweep 851 * up before we report an error. 852 */ 853 txreap(sc); 854 855 if (sc->sc_txfree != KSE_NTXDESC) { 856 printf("%s: device timeout (txfree %d txsfree %d txnext %d)\n", 857 device_xname(&sc->sc_dev), sc->sc_txfree, sc->sc_txsfree, 858 sc->sc_txnext); 859 ifp->if_oerrors++; 860 861 /* Reset the interface. */ 862 kse_init(ifp); 863 } 864 else if (ifp->if_flags & IFF_DEBUG) 865 printf("%s: recovered from device timeout\n", 866 device_xname(&sc->sc_dev)); 867 868 /* Try to get more packets going. */ 869 kse_start(ifp); 870 } 871 872 static void 873 kse_start(struct ifnet *ifp) 874 { 875 struct kse_softc *sc = ifp->if_softc; 876 struct mbuf *m0, *m; 877 struct kse_txsoft *txs; 878 bus_dmamap_t dmamap; 879 int error, nexttx, lasttx, ofree, seg; 880 uint32_t tdes0; 881 882 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 883 return; 884 885 /* 886 * Remember the previous number of free descriptors. 887 */ 888 ofree = sc->sc_txfree; 889 890 /* 891 * Loop through the send queue, setting up transmit descriptors 892 * until we drain the queue, or use up all available transmit 893 * descriptors. 894 */ 895 for (;;) { 896 IFQ_POLL(&ifp->if_snd, m0); 897 if (m0 == NULL) 898 break; 899 900 if (sc->sc_txsfree < KSE_TXQUEUE_GC) { 901 txreap(sc); 902 if (sc->sc_txsfree == 0) 903 break; 904 } 905 txs = &sc->sc_txsoft[sc->sc_txsnext]; 906 dmamap = txs->txs_dmamap; 907 908 error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, 909 BUS_DMA_WRITE|BUS_DMA_NOWAIT); 910 if (error) { 911 if (error == EFBIG) { 912 printf("%s: Tx packet consumes too many " 913 "DMA segments, dropping...\n", 914 device_xname(&sc->sc_dev)); 915 IFQ_DEQUEUE(&ifp->if_snd, m0); 916 m_freem(m0); 917 continue; 918 } 919 /* Short on resources, just stop for now. */ 920 break; 921 } 922 923 if (dmamap->dm_nsegs > sc->sc_txfree) { 924 /* 925 * Not enough free descriptors to transmit this 926 * packet. We haven't committed anything yet, 927 * so just unload the DMA map, put the packet 928 * back on the queue, and punt. Notify the upper 929 * layer that there are not more slots left. 930 */ 931 ifp->if_flags |= IFF_OACTIVE; 932 bus_dmamap_unload(sc->sc_dmat, dmamap); 933 break; 934 } 935 936 IFQ_DEQUEUE(&ifp->if_snd, m0); 937 938 /* 939 * WE ARE NOW COMMITTED TO TRANSMITTING THE PACKET. 940 */ 941 942 bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize, 943 BUS_DMASYNC_PREWRITE); 944 945 lasttx = -1; tdes0 = 0; 946 for (nexttx = sc->sc_txnext, seg = 0; 947 seg < dmamap->dm_nsegs; 948 seg++, nexttx = KSE_NEXTTX(nexttx)) { 949 struct tdes *tdes = &sc->sc_txdescs[nexttx]; 950 /* 951 * If this is the first descriptor we're 952 * enqueueing, don't set the OWN bit just 953 * yet. That could cause a race condition. 954 * We'll do it below. 955 */ 956 tdes->t2 = dmamap->dm_segs[seg].ds_addr; 957 tdes->t1 = sc->sc_t1csum 958 | (dmamap->dm_segs[seg].ds_len & T1_TBS_MASK); 959 tdes->t0 = tdes0; 960 tdes0 |= T0_OWN; 961 lasttx = nexttx; 962 } 963 964 /* 965 * Outgoing NFS mbuf must be unloaded when Tx completed. 966 * Without T1_IC NFS mbuf is left unack'ed for excessive 967 * time and NFS stops to proceed until kse_watchdog() 968 * calls txreap() to reclaim the unack'ed mbuf. 969 * It's painful to traverse every mbuf chain to determine 970 * whether someone is waiting for Tx completion. 971 */ 972 m = m0; 973 do { 974 if ((m->m_flags & M_EXT) && m->m_ext.ext_free) { 975 sc->sc_txdescs[lasttx].t1 |= T1_IC; 976 break; 977 } 978 } while ((m = m->m_next) != NULL); 979 980 /* write last T0_OWN bit of the 1st segment */ 981 sc->sc_txdescs[lasttx].t1 |= T1_LS; 982 sc->sc_txdescs[sc->sc_txnext].t1 |= T1_FS; 983 sc->sc_txdescs[sc->sc_txnext].t0 = T0_OWN; 984 KSE_CDTXSYNC(sc, sc->sc_txnext, dmamap->dm_nsegs, 985 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 986 987 /* tell DMA start transmit */ 988 CSR_WRITE_4(sc, MDTSC, 1); 989 990 txs->txs_mbuf = m0; 991 txs->txs_firstdesc = sc->sc_txnext; 992 txs->txs_lastdesc = lasttx; 993 txs->txs_ndesc = dmamap->dm_nsegs; 994 995 sc->sc_txfree -= txs->txs_ndesc; 996 sc->sc_txnext = nexttx; 997 sc->sc_txsfree--; 998 sc->sc_txsnext = KSE_NEXTTXS(sc->sc_txsnext); 999 /* 1000 * Pass the packet to any BPF listeners. 1001 */ 1002 bpf_mtap(ifp, m0); 1003 } 1004 1005 if (sc->sc_txsfree == 0 || sc->sc_txfree == 0) { 1006 /* No more slots left; notify upper layer. */ 1007 ifp->if_flags |= IFF_OACTIVE; 1008 } 1009 if (sc->sc_txfree != ofree) { 1010 /* Set a watchdog timer in case the chip flakes out. */ 1011 ifp->if_timer = 5; 1012 } 1013 } 1014 1015 static void 1016 kse_set_filter(struct kse_softc *sc) 1017 { 1018 struct ether_multistep step; 1019 struct ether_multi *enm; 1020 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1021 uint32_t h, hashes[2]; 1022 1023 sc->sc_rxc &= ~(RXC_MHTE | RXC_RM); 1024 ifp->if_flags &= ~IFF_ALLMULTI; 1025 if (ifp->if_flags & IFF_PROMISC) 1026 return; 1027 1028 ETHER_FIRST_MULTI(step, &sc->sc_ethercom, enm); 1029 if (enm == NULL) 1030 return; 1031 hashes[0] = hashes[1] = 0; 1032 do { 1033 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 1034 /* 1035 * We must listen to a range of multicast addresses. 1036 * For now, just accept all multicasts, rather than 1037 * trying to set only those filter bits needed to match 1038 * the range. (At this time, the only use of address 1039 * ranges is for IP multicast routing, for which the 1040 * range is big enough to require all bits set.) 1041 */ 1042 goto allmulti; 1043 } 1044 h = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN) >> 26; 1045 hashes[h >> 5] |= 1 << (h & 0x1f); 1046 ETHER_NEXT_MULTI(step, enm); 1047 } while (enm != NULL); 1048 sc->sc_rxc |= RXC_MHTE; 1049 CSR_WRITE_4(sc, MTR0, hashes[0]); 1050 CSR_WRITE_4(sc, MTR1, hashes[1]); 1051 return; 1052 allmulti: 1053 sc->sc_rxc |= RXC_RM; 1054 ifp->if_flags |= IFF_ALLMULTI; 1055 } 1056 1057 static int 1058 add_rxbuf(struct kse_softc *sc, int idx) 1059 { 1060 struct kse_rxsoft *rxs = &sc->sc_rxsoft[idx]; 1061 struct mbuf *m; 1062 int error; 1063 1064 MGETHDR(m, M_DONTWAIT, MT_DATA); 1065 if (m == NULL) 1066 return ENOBUFS; 1067 1068 MCLGET(m, M_DONTWAIT); 1069 if ((m->m_flags & M_EXT) == 0) { 1070 m_freem(m); 1071 return ENOBUFS; 1072 } 1073 1074 if (rxs->rxs_mbuf != NULL) 1075 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 1076 1077 rxs->rxs_mbuf = m; 1078 1079 error = bus_dmamap_load(sc->sc_dmat, rxs->rxs_dmamap, 1080 m->m_ext.ext_buf, m->m_ext.ext_size, NULL, BUS_DMA_NOWAIT); 1081 if (error) { 1082 printf("%s: can't load rx DMA map %d, error = %d\n", 1083 device_xname(&sc->sc_dev), idx, error); 1084 panic("kse_add_rxbuf"); 1085 } 1086 1087 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1088 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 1089 1090 KSE_INIT_RXDESC(sc, idx); 1091 1092 return 0; 1093 } 1094 1095 static void 1096 rxdrain(struct kse_softc *sc) 1097 { 1098 struct kse_rxsoft *rxs; 1099 int i; 1100 1101 for (i = 0; i < KSE_NRXDESC; i++) { 1102 rxs = &sc->sc_rxsoft[i]; 1103 if (rxs->rxs_mbuf != NULL) { 1104 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 1105 m_freem(rxs->rxs_mbuf); 1106 rxs->rxs_mbuf = NULL; 1107 } 1108 } 1109 } 1110 1111 static int 1112 kse_intr(void *arg) 1113 { 1114 struct kse_softc *sc = arg; 1115 uint32_t isr; 1116 1117 if ((isr = CSR_READ_4(sc, INTST)) == 0) 1118 return 0; 1119 1120 if (isr & INT_DMRS) 1121 rxintr(sc); 1122 if (isr & INT_DMTS) 1123 txreap(sc); 1124 if (isr & INT_DMLCS) 1125 lnkchg(sc); 1126 if (isr & INT_DMRBUS) 1127 printf("%s: Rx descriptor full\n", device_xname(&sc->sc_dev)); 1128 1129 CSR_WRITE_4(sc, INTST, isr); 1130 return 1; 1131 } 1132 1133 static void 1134 rxintr(struct kse_softc *sc) 1135 { 1136 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1137 struct kse_rxsoft *rxs; 1138 struct mbuf *m; 1139 uint32_t rxstat; 1140 int i, len; 1141 1142 for (i = sc->sc_rxptr; /*CONSTCOND*/ 1; i = KSE_NEXTRX(i)) { 1143 rxs = &sc->sc_rxsoft[i]; 1144 1145 KSE_CDRXSYNC(sc, i, 1146 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1147 1148 rxstat = sc->sc_rxdescs[i].r0; 1149 1150 if (rxstat & R0_OWN) /* desc is left empty */ 1151 break; 1152 1153 /* R0_FS|R0_LS must have been marked for this desc */ 1154 1155 if (rxstat & R0_ES) { 1156 ifp->if_ierrors++; 1157 #define PRINTERR(bit, str) \ 1158 if (rxstat & (bit)) \ 1159 printf("%s: receive error: %s\n", \ 1160 device_xname(&sc->sc_dev), str) 1161 PRINTERR(R0_TL, "frame too long"); 1162 PRINTERR(R0_RF, "runt frame"); 1163 PRINTERR(R0_CE, "bad FCS"); 1164 #undef PRINTERR 1165 KSE_INIT_RXDESC(sc, i); 1166 continue; 1167 } 1168 1169 /* HW errata; frame might be too small or too large */ 1170 1171 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 1172 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1173 1174 len = rxstat & R0_FL_MASK; 1175 len -= ETHER_CRC_LEN; /* trim CRC off */ 1176 m = rxs->rxs_mbuf; 1177 1178 if (add_rxbuf(sc, i) != 0) { 1179 ifp->if_ierrors++; 1180 KSE_INIT_RXDESC(sc, i); 1181 bus_dmamap_sync(sc->sc_dmat, 1182 rxs->rxs_dmamap, 0, 1183 rxs->rxs_dmamap->dm_mapsize, 1184 BUS_DMASYNC_PREREAD); 1185 continue; 1186 } 1187 1188 ifp->if_ipackets++; 1189 m->m_pkthdr.rcvif = ifp; 1190 m->m_pkthdr.len = m->m_len = len; 1191 1192 if (sc->sc_mcsum) { 1193 m->m_pkthdr.csum_flags |= sc->sc_mcsum; 1194 if (rxstat & R0_IPE) 1195 m->m_pkthdr.csum_flags |= M_CSUM_IPv4_BAD; 1196 if (rxstat & (R0_TCPE | R0_UDPE)) 1197 m->m_pkthdr.csum_flags |= M_CSUM_TCP_UDP_BAD; 1198 } 1199 bpf_mtap(ifp, m); 1200 (*ifp->if_input)(ifp, m); 1201 #ifdef KSEDIAGNOSTIC 1202 if (kse_monitor_rxintr > 0) { 1203 printf("m stat %x data %p len %d\n", 1204 rxstat, m->m_data, m->m_len); 1205 } 1206 #endif 1207 } 1208 sc->sc_rxptr = i; 1209 } 1210 1211 static void 1212 txreap(struct kse_softc *sc) 1213 { 1214 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1215 struct kse_txsoft *txs; 1216 uint32_t txstat; 1217 int i; 1218 1219 ifp->if_flags &= ~IFF_OACTIVE; 1220 1221 for (i = sc->sc_txsdirty; sc->sc_txsfree != KSE_TXQUEUELEN; 1222 i = KSE_NEXTTXS(i), sc->sc_txsfree++) { 1223 txs = &sc->sc_txsoft[i]; 1224 1225 KSE_CDTXSYNC(sc, txs->txs_firstdesc, txs->txs_ndesc, 1226 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1227 1228 txstat = sc->sc_txdescs[txs->txs_lastdesc].t0; 1229 1230 if (txstat & T0_OWN) /* desc is still in use */ 1231 break; 1232 1233 /* there is no way to tell transmission status per frame */ 1234 1235 ifp->if_opackets++; 1236 1237 sc->sc_txfree += txs->txs_ndesc; 1238 bus_dmamap_sync(sc->sc_dmat, txs->txs_dmamap, 1239 0, txs->txs_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1240 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 1241 m_freem(txs->txs_mbuf); 1242 txs->txs_mbuf = NULL; 1243 } 1244 sc->sc_txsdirty = i; 1245 if (sc->sc_txsfree == KSE_TXQUEUELEN) 1246 ifp->if_timer = 0; 1247 } 1248 1249 static void 1250 lnkchg(struct kse_softc *sc) 1251 { 1252 struct ifmediareq ifmr; 1253 1254 #if 0 /* rambling link status */ 1255 printf("%s: link %s\n", device_xname(&sc->sc_dev), 1256 (CSR_READ_2(sc, P1SR) & (1U << 5)) ? "up" : "down"); 1257 #endif 1258 ifmedia_sts(&sc->sc_ethercom.ec_if, &ifmr); 1259 } 1260 1261 static int 1262 ifmedia_upd(struct ifnet *ifp) 1263 { 1264 struct kse_softc *sc = ifp->if_softc; 1265 struct ifmedia *ifm = &sc->sc_media; 1266 uint16_t ctl; 1267 1268 ctl = 0; 1269 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) { 1270 ctl |= (1U << 13); /* restart AN */ 1271 ctl |= (1U << 7); /* enable AN */ 1272 ctl |= (1U << 4); /* advertise flow control pause */ 1273 ctl |= (1U << 3) | (1U << 2) | (1U << 1) | (1U << 0); 1274 } 1275 else { 1276 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_100_TX) 1277 ctl |= (1U << 6); 1278 if (ifm->ifm_media & IFM_FDX) 1279 ctl |= (1U << 5); 1280 } 1281 CSR_WRITE_2(sc, P1CR4, ctl); 1282 1283 sc->sc_media_active = IFM_NONE; 1284 sc->sc_media_status = IFM_AVALID; 1285 1286 return 0; 1287 } 1288 1289 static void 1290 ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 1291 { 1292 struct kse_softc *sc = ifp->if_softc; 1293 struct ifmedia *ifm = &sc->sc_media; 1294 uint16_t ctl, sts, result; 1295 1296 ifmr->ifm_status = IFM_AVALID; 1297 ifmr->ifm_active = IFM_ETHER; 1298 1299 ctl = CSR_READ_2(sc, P1CR4); 1300 sts = CSR_READ_2(sc, P1SR); 1301 if ((sts & (1U << 5)) == 0) { 1302 ifmr->ifm_active |= IFM_NONE; 1303 goto out; /* link is down */ 1304 } 1305 ifmr->ifm_status |= IFM_ACTIVE; 1306 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) { 1307 if ((sts & (1U << 6)) == 0) { 1308 ifmr->ifm_active |= IFM_NONE; 1309 goto out; /* negotiation in progress */ 1310 } 1311 result = ctl & sts & 017; 1312 if (result & (1U << 3)) 1313 ifmr->ifm_active |= IFM_100_TX|IFM_FDX; 1314 else if (result & (1U << 2)) 1315 ifmr->ifm_active |= IFM_100_TX; 1316 else if (result & (1U << 1)) 1317 ifmr->ifm_active |= IFM_10_T|IFM_FDX; 1318 else if (result & (1U << 0)) 1319 ifmr->ifm_active |= IFM_10_T; 1320 else 1321 ifmr->ifm_active |= IFM_NONE; 1322 if (ctl & (1U << 4)) 1323 ifmr->ifm_active |= IFM_FLOW | IFM_ETH_RXPAUSE; 1324 if (sts & (1U << 4)) 1325 ifmr->ifm_active |= IFM_FLOW | IFM_ETH_TXPAUSE; 1326 } 1327 else { 1328 ifmr->ifm_active |= (sts & (1U << 10)) ? IFM_100_TX : IFM_10_T; 1329 if (sts & (1U << 9)) 1330 ifmr->ifm_active |= IFM_FDX; 1331 if (sts & (1U << 12)) 1332 ifmr->ifm_active |= IFM_FLOW | IFM_ETH_RXPAUSE; 1333 if (sts & (1U << 11)) 1334 ifmr->ifm_active |= IFM_FLOW | IFM_ETH_TXPAUSE; 1335 } 1336 1337 out: 1338 sc->sc_media_status = ifmr->ifm_status; 1339 sc->sc_media_active = ifmr->ifm_active; 1340 } 1341 1342 static void 1343 phy_tick(void *arg) 1344 { 1345 struct kse_softc *sc = arg; 1346 struct ifmediareq ifmr; 1347 int s; 1348 1349 s = splnet(); 1350 ifmedia_sts(&sc->sc_ethercom.ec_if, &ifmr); 1351 splx(s); 1352 1353 callout_reset(&sc->sc_callout, hz, phy_tick, sc); 1354 } 1355 1356 static int 1357 ifmedia2_upd(struct ifnet *ifp) 1358 { 1359 struct kse_softc *sc = ifp->if_softc; 1360 1361 sc->sc_media_status = IFM_AVALID; 1362 sc->sc_media_active = IFM_NONE; 1363 return 0; 1364 } 1365 1366 static void 1367 ifmedia2_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 1368 { 1369 struct kse_softc *sc = ifp->if_softc; 1370 int p1sts, p2sts; 1371 1372 ifmr->ifm_status = IFM_AVALID; 1373 ifmr->ifm_active = IFM_ETHER; 1374 p1sts = CSR_READ_2(sc, P1SR); 1375 p2sts = CSR_READ_2(sc, P2SR); 1376 if (((p1sts | p2sts) & (1U << 5)) == 0) 1377 ifmr->ifm_active |= IFM_NONE; 1378 else { 1379 ifmr->ifm_status |= IFM_ACTIVE; 1380 ifmr->ifm_active |= IFM_100_TX|IFM_FDX; 1381 ifmr->ifm_active |= IFM_FLOW|IFM_ETH_RXPAUSE|IFM_ETH_TXPAUSE; 1382 } 1383 sc->sc_media_status = ifmr->ifm_status; 1384 sc->sc_media_active = ifmr->ifm_active; 1385 } 1386 1387 #ifdef KSE_EVENT_COUNTERS 1388 static void 1389 stat_tick(void *arg) 1390 { 1391 struct kse_softc *sc = arg; 1392 struct ksext *ee = &sc->sc_ext; 1393 int nport, p, i, val; 1394 1395 nport = (sc->sc_chip == 0x8842) ? 3 : 1; 1396 for (p = 0; p < nport; p++) { 1397 for (i = 0; i < 32; i++) { 1398 val = 0x1c00 | (p * 0x20 + i); 1399 CSR_WRITE_2(sc, IACR, val); 1400 do { 1401 val = CSR_READ_2(sc, IADR5) << 16; 1402 } while ((val & (1U << 30)) == 0); 1403 if (val & (1U << 31)) { 1404 (void)CSR_READ_2(sc, IADR4); 1405 val = 0x3fffffff; /* has made overflow */ 1406 } 1407 else { 1408 val &= 0x3fff0000; /* 29:16 */ 1409 val |= CSR_READ_2(sc, IADR4); /* 15:0 */ 1410 } 1411 ee->pev[p][i].ev_count += val; /* i (0-31) */ 1412 } 1413 CSR_WRITE_2(sc, IACR, 0x1c00 + 0x100 + p); 1414 ee->pev[p][32].ev_count = CSR_READ_2(sc, IADR4); /* 32 */ 1415 CSR_WRITE_2(sc, IACR, 0x1c00 + 0x100 + p * 3 + 1); 1416 ee->pev[p][33].ev_count = CSR_READ_2(sc, IADR4); /* 33 */ 1417 } 1418 callout_reset(&sc->sc_stat_ch, hz * 60, stat_tick, arg); 1419 } 1420 1421 static void 1422 zerostats(struct kse_softc *sc) 1423 { 1424 struct ksext *ee = &sc->sc_ext; 1425 int nport, p, i, val; 1426 1427 /* make sure all the HW counters get zero */ 1428 nport = (sc->sc_chip == 0x8842) ? 3 : 1; 1429 for (p = 0; p < nport; p++) { 1430 for (i = 0; i < 31; i++) { 1431 val = 0x1c00 | (p * 0x20 + i); 1432 CSR_WRITE_2(sc, IACR, val); 1433 do { 1434 val = CSR_READ_2(sc, IADR5) << 16; 1435 } while ((val & (1U << 30)) == 0); 1436 (void)CSR_READ_2(sc, IADR4); 1437 ee->pev[p][i].ev_count = 0; 1438 } 1439 } 1440 } 1441 #endif 1442