if_cnmac.c revision 1.27
1 /* $NetBSD: if_cnmac.c,v 1.27 2022/09/18 11:38:48 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Internet Initiative Japan, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: if_cnmac.c,v 1.27 2022/09/18 11:38:48 thorpej Exp $"); 31 32 /* 33 * If no free send buffer is available, free all the sent buffers and bail out. 34 */ 35 #define CNMAC_SEND_QUEUE_CHECK 36 37 /* XXX XXX XXX XXX XXX XXX */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/pool.h> 42 #include <sys/mbuf.h> 43 #include <sys/malloc.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/ioctl.h> 47 #include <sys/errno.h> 48 #include <sys/device.h> 49 #include <sys/queue.h> 50 #include <sys/conf.h> 51 #include <sys/sysctl.h> 52 #include <sys/syslog.h> 53 54 #include <net/if.h> 55 #include <net/if_media.h> 56 #include <net/if_ether.h> 57 #include <net/route.h> 58 #include <net/bpf.h> 59 60 #include <netinet/in.h> 61 #include <netinet/in_systm.h> 62 #include <netinet/in_var.h> 63 #include <netinet/ip.h> 64 65 #include <sys/bus.h> 66 #include <machine/intr.h> 67 #include <machine/endian.h> 68 #include <machine/locore.h> 69 70 #include <dev/mii/mii.h> 71 #include <dev/mii/miivar.h> 72 73 #include <mips/cpuregs.h> 74 75 #include <mips/cavium/octeonreg.h> 76 #include <mips/cavium/octeonvar.h> 77 #include <mips/cavium/include/iobusvar.h> 78 79 #include <mips/cavium/dev/octeon_ciureg.h> 80 #include <mips/cavium/dev/octeon_faureg.h> 81 #include <mips/cavium/dev/octeon_fpareg.h> 82 #include <mips/cavium/dev/octeon_gmxreg.h> 83 #include <mips/cavium/dev/octeon_pipreg.h> 84 #include <mips/cavium/dev/octeon_powreg.h> 85 #include <mips/cavium/dev/octeon_fauvar.h> 86 #include <mips/cavium/dev/octeon_fpavar.h> 87 #include <mips/cavium/dev/octeon_gmxvar.h> 88 #include <mips/cavium/dev/octeon_ipdvar.h> 89 #include <mips/cavium/dev/octeon_pipvar.h> 90 #include <mips/cavium/dev/octeon_pkovar.h> 91 #include <mips/cavium/dev/octeon_powvar.h> 92 #include <mips/cavium/dev/octeon_smivar.h> 93 94 #include <mips/cavium/dev/if_cnmacvar.h> 95 96 /* 97 * Set the PKO to think command buffers are an odd length. This makes it so we 98 * never have to divide a comamnd across two buffers. 99 */ 100 #define OCTEON_POOL_NWORDS_CMD \ 101 (((uint32_t)OCTEON_POOL_SIZE_CMD / sizeof(uint64_t)) - 1) 102 #define FPA_COMMAND_BUFFER_POOL_NWORDS OCTEON_POOL_NWORDS_CMD /* XXX */ 103 104 static void cnmac_buf_init(struct cnmac_softc *); 105 106 static int cnmac_match(device_t, struct cfdata *, void *); 107 static void cnmac_attach(device_t, device_t, void *); 108 static void cnmac_pip_init(struct cnmac_softc *); 109 static void cnmac_ipd_init(struct cnmac_softc *); 110 static void cnmac_pko_init(struct cnmac_softc *); 111 112 static void cnmac_board_mac_addr(uint8_t *, size_t, struct cnmac_softc *); 113 114 static int cnmac_mii_readreg(device_t, int, int, uint16_t *); 115 static int cnmac_mii_writereg(device_t, int, int, uint16_t); 116 static void cnmac_mii_statchg(struct ifnet *); 117 118 static int cnmac_mediainit(struct cnmac_softc *); 119 static void cnmac_mediastatus(struct ifnet *, struct ifmediareq *); 120 121 static inline void cnmac_send_queue_flush_prefetch(struct cnmac_softc *); 122 static inline void cnmac_send_queue_flush_fetch(struct cnmac_softc *); 123 static inline void cnmac_send_queue_flush(struct cnmac_softc *); 124 static inline void cnmac_send_queue_flush_sync(struct cnmac_softc *); 125 static void cnmac_send_queue_check_and_flush(struct cnmac_softc *); 126 static inline int cnmac_send_queue_is_full(struct cnmac_softc *); 127 static inline void cnmac_send_queue_add(struct cnmac_softc *, struct mbuf *, 128 uint64_t *); 129 static inline void cnmac_send_queue_del(struct cnmac_softc *, struct mbuf **, 130 uint64_t **); 131 static inline int cnmac_buf_free_work(struct cnmac_softc *, uint64_t *); 132 static inline void cnmac_buf_ext_free(struct mbuf *, void *, size_t, void *); 133 134 static int cnmac_ioctl(struct ifnet *, u_long, void *); 135 static void cnmac_watchdog(struct ifnet *); 136 static int cnmac_init(struct ifnet *); 137 static void cnmac_stop(struct ifnet *, int); 138 static void cnmac_start(struct ifnet *); 139 140 static inline int cnmac_send_cmd(struct cnmac_softc *, uint64_t, uint64_t, 141 int *); 142 static inline uint64_t cnmac_send_makecmd_w1(int, paddr_t); 143 static inline uint64_t cnmac_send_makecmd_w0(uint64_t, uint64_t, size_t, int, 144 int); 145 static inline int cnmac_send_makecmd_gbuf(struct cnmac_softc *, struct mbuf *, 146 uint64_t *, int *); 147 static inline int cnmac_send_makecmd(struct cnmac_softc *, struct mbuf *, 148 uint64_t *, uint64_t *, uint64_t *); 149 static inline int cnmac_send_buf(struct cnmac_softc *, struct mbuf *, 150 uint64_t *, int *); 151 static inline int cnmac_send(struct cnmac_softc *, struct mbuf *, int *); 152 153 static int cnmac_reset(struct cnmac_softc *); 154 static int cnmac_configure(struct cnmac_softc *); 155 static int cnmac_configure_common(struct cnmac_softc *); 156 157 static void cnmac_tick_free(void *); 158 static void cnmac_tick_misc(void *); 159 160 static inline int cnmac_recv_mbuf(struct cnmac_softc *, uint64_t *, 161 struct mbuf **); 162 static inline int cnmac_recv_check(struct cnmac_softc *, uint64_t); 163 static inline int cnmac_recv(struct cnmac_softc *, uint64_t *); 164 static int cnmac_intr(void *); 165 166 /* device parameters */ 167 int cnmac_param_pko_cmd_w0_n2 = 1; 168 169 CFATTACH_DECL_NEW(cnmac, sizeof(struct cnmac_softc), 170 cnmac_match, cnmac_attach, NULL, NULL); 171 172 /* ---- buffer management */ 173 174 static const struct cnmac_pool_param { 175 int poolno; 176 size_t size; 177 size_t nelems; 178 } cnmac_pool_params[] = { 179 #define _ENTRY(x) { OCTEON_POOL_NO_##x, OCTEON_POOL_SIZE_##x, OCTEON_POOL_NELEMS_##x } 180 _ENTRY(PKT), 181 _ENTRY(WQE), 182 _ENTRY(CMD), 183 _ENTRY(SG) 184 #undef _ENTRY 185 }; 186 struct octfpa_buf *cnmac_pools[FPA_NPOOLS]; 187 #define cnmac_fb_pkt cnmac_pools[OCTEON_POOL_NO_PKT] 188 #define cnmac_fb_wqe cnmac_pools[OCTEON_POOL_NO_WQE] 189 #define cnmac_fb_cmd cnmac_pools[OCTEON_POOL_NO_CMD] 190 #define cnmac_fb_sg cnmac_pools[OCTEON_POOL_NO_SG] 191 192 static int cnmac_npowgroups = 0; 193 194 static void 195 cnmac_buf_init(struct cnmac_softc *sc) 196 { 197 static int once; 198 int i; 199 const struct cnmac_pool_param *pp; 200 struct octfpa_buf *fb; 201 202 if (once == 1) 203 return; 204 once = 1; 205 206 for (i = 0; i < (int)__arraycount(cnmac_pool_params); i++) { 207 pp = &cnmac_pool_params[i]; 208 octfpa_buf_init(pp->poolno, pp->size, pp->nelems, &fb); 209 cnmac_pools[i] = fb; 210 } 211 } 212 213 /* ---- autoconf */ 214 215 static int 216 cnmac_match(device_t parent, struct cfdata *match, void *aux) 217 { 218 struct octgmx_attach_args *ga = aux; 219 220 if (strcmp(match->cf_name, ga->ga_name) != 0) { 221 return 0; 222 } 223 return 1; 224 } 225 226 static void 227 cnmac_attach(device_t parent, device_t self, void *aux) 228 { 229 struct cnmac_softc *sc = device_private(self); 230 struct octgmx_attach_args *ga = aux; 231 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 232 prop_dictionary_t dict; 233 prop_object_t clk; 234 uint8_t enaddr[ETHER_ADDR_LEN]; 235 236 if (cnmac_npowgroups >= OCTEON_POW_GROUP_MAX) { 237 printf(": out of POW groups\n"); 238 } 239 240 sc->sc_dev = self; 241 sc->sc_regt = ga->ga_regt; 242 sc->sc_port = ga->ga_portno; 243 sc->sc_port_type = ga->ga_port_type; 244 sc->sc_gmx = ga->ga_gmx; 245 sc->sc_gmx_port = ga->ga_gmx_port; 246 sc->sc_smi = ga->ga_smi; 247 sc->sc_powgroup = cnmac_npowgroups++; 248 249 if (sc->sc_port >= CVMSEG_LM_ETHER_COUNT) { 250 /* 251 * If we got here, increase CVMSEG_LM_ETHER_COUNT 252 * in octeonvar.h . 253 */ 254 printf("%s: ERROR out of CVMSEG LM buffers\n", 255 device_xname(self)); 256 return; 257 } 258 259 sc->sc_init_flag = 0; 260 /* 261 * XXXUEBAYASI 262 * Setting PIP_IP_OFFSET[OFFSET] to 8 causes panic ... why??? 263 */ 264 sc->sc_ip_offset = 0/* XXX */; 265 266 if (MIPS_PRID_IMPL(mips_options.mips_cpu_id) <= MIPS_CN30XX) { 267 SET(sc->sc_quirks, CNMAC_QUIRKS_NO_PRE_ALIGN); 268 SET(sc->sc_quirks, CNMAC_QUIRKS_NO_RX_INBND); 269 } 270 271 cnmac_board_mac_addr(enaddr, sizeof(enaddr), sc); 272 printf("%s: Ethernet address %s\n", device_xname(self), 273 ether_sprintf(enaddr)); 274 275 SIMPLEQ_INIT(&sc->sc_sendq); 276 sc->sc_soft_req_thresh = 15/* XXX */; 277 sc->sc_ext_callback_cnt = 0; 278 279 octgmx_stats_init(sc->sc_gmx_port); 280 281 callout_init(&sc->sc_tick_misc_ch, 0); 282 callout_setfunc(&sc->sc_tick_misc_ch, cnmac_tick_misc, sc); 283 284 callout_init(&sc->sc_tick_free_ch, 0); 285 callout_setfunc(&sc->sc_tick_free_ch, cnmac_tick_free, sc); 286 287 const int dv_unit = device_unit(self); 288 octfau_op_init(&sc->sc_fau_done, 289 OCTEON_CVMSEG_ETHER_OFFSET(dv_unit, csm_ether_fau_done), 290 OCT_FAU_REG_ADDR_END - (8 * (dv_unit + 1))/* XXX */); 291 octfau_op_set_8(&sc->sc_fau_done, 0); 292 293 cnmac_pip_init(sc); 294 cnmac_ipd_init(sc); 295 cnmac_pko_init(sc); 296 297 cnmac_configure_common(sc); 298 299 sc->sc_gmx_port->sc_ipd = sc->sc_ipd; 300 sc->sc_gmx_port->sc_port_mii = &sc->sc_mii; 301 sc->sc_gmx_port->sc_port_ec = &sc->sc_ethercom; 302 /* XXX */ 303 sc->sc_gmx_port->sc_quirks = sc->sc_quirks; 304 305 /* XXX */ 306 sc->sc_pow = &octpow_softc; 307 308 cnmac_mediainit(sc); 309 310 strncpy(ifp->if_xname, device_xname(self), sizeof(ifp->if_xname)); 311 ifp->if_softc = sc; 312 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 313 ifp->if_ioctl = cnmac_ioctl; 314 ifp->if_start = cnmac_start; 315 ifp->if_watchdog = cnmac_watchdog; 316 ifp->if_init = cnmac_init; 317 ifp->if_stop = cnmac_stop; 318 IFQ_SET_MAXLEN(&ifp->if_snd, uimax(GATHER_QUEUE_SIZE, IFQ_MAXLEN)); 319 IFQ_SET_READY(&ifp->if_snd); 320 321 322 ifp->if_capabilities = 323 #if 0 /* XXX: no tx checksum yet */ 324 IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx | 325 IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx | 326 IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx | 327 IFCAP_CSUM_TCPv6_Tx | IFCAP_CSUM_TCPv6_Rx | 328 IFCAP_CSUM_UDPv6_Tx | IFCAP_CSUM_UDPv6_Rx; 329 #else 330 IFCAP_CSUM_IPv4_Rx | IFCAP_CSUM_TCPv4_Rx | IFCAP_CSUM_UDPv4_Rx | 331 IFCAP_CSUM_TCPv6_Rx | IFCAP_CSUM_UDPv6_Rx; 332 #endif 333 334 /* 802.1Q VLAN-sized frames are supported */ 335 sc->sc_ethercom.ec_capabilities |= ETHERCAP_VLAN_MTU; 336 337 octgmx_set_mac_addr(sc->sc_gmx_port, enaddr); 338 339 if_attach(ifp); 340 ether_ifattach(ifp, enaddr); 341 octgmx_set_filter(sc->sc_gmx_port); 342 343 #if 1 344 cnmac_buf_init(sc); 345 #endif 346 347 sc->sc_ih = octeon_intr_establish(POW_WORKQ_IRQ(sc->sc_powgroup), 348 IPL_NET, cnmac_intr, sc); 349 if (sc->sc_ih == NULL) 350 panic("%s: could not set up interrupt", device_xname(self)); 351 352 dict = device_properties(sc->sc_gmx->sc_dev); 353 354 clk = prop_dictionary_get(dict, "rgmii-tx"); 355 if (clk) 356 sc->sc_gmx_port->sc_clk_tx_setting = 357 prop_number_signed_value(clk); 358 clk = prop_dictionary_get(dict, "rgmii-rx"); 359 if (clk) 360 sc->sc_gmx_port->sc_clk_rx_setting = 361 prop_number_signed_value(clk); 362 } 363 364 /* ---- submodules */ 365 366 /* XXX */ 367 static void 368 cnmac_pip_init(struct cnmac_softc *sc) 369 { 370 struct octpip_attach_args pip_aa; 371 372 pip_aa.aa_port = sc->sc_port; 373 pip_aa.aa_regt = sc->sc_regt; 374 pip_aa.aa_tag_type = POW_TAG_TYPE_ORDERED/* XXX */; 375 pip_aa.aa_receive_group = sc->sc_powgroup; 376 pip_aa.aa_ip_offset = sc->sc_ip_offset; 377 octpip_init(&pip_aa, &sc->sc_pip); 378 octpip_port_config(sc->sc_pip); 379 } 380 381 /* XXX */ 382 static void 383 cnmac_ipd_init(struct cnmac_softc *sc) 384 { 385 struct octipd_attach_args ipd_aa; 386 387 ipd_aa.aa_port = sc->sc_port; 388 ipd_aa.aa_regt = sc->sc_regt; 389 ipd_aa.aa_first_mbuff_skip = 184/* XXX */; 390 ipd_aa.aa_not_first_mbuff_skip = 0/* XXX */; 391 octipd_init(&ipd_aa, &sc->sc_ipd); 392 } 393 394 /* XXX */ 395 static void 396 cnmac_pko_init(struct cnmac_softc *sc) 397 { 398 struct octpko_attach_args pko_aa; 399 400 pko_aa.aa_port = sc->sc_port; 401 pko_aa.aa_regt = sc->sc_regt; 402 pko_aa.aa_cmdptr = &sc->sc_cmdptr; 403 pko_aa.aa_cmd_buf_pool = OCTEON_POOL_NO_CMD; 404 pko_aa.aa_cmd_buf_size = OCTEON_POOL_NWORDS_CMD; 405 octpko_init(&pko_aa, &sc->sc_pko); 406 } 407 408 /* ---- XXX */ 409 410 #define ADDR2UINT64(u, a) \ 411 do { \ 412 u = \ 413 (((uint64_t)a[0] << 40) | ((uint64_t)a[1] << 32) | \ 414 ((uint64_t)a[2] << 24) | ((uint64_t)a[3] << 16) | \ 415 ((uint64_t)a[4] << 8) | ((uint64_t)a[5] << 0)); \ 416 } while (0) 417 #define UINT642ADDR(a, u) \ 418 do { \ 419 a[0] = (uint8_t)((u) >> 40); a[1] = (uint8_t)((u) >> 32); \ 420 a[2] = (uint8_t)((u) >> 24); a[3] = (uint8_t)((u) >> 16); \ 421 a[4] = (uint8_t)((u) >> 8); a[5] = (uint8_t)((u) >> 0); \ 422 } while (0) 423 424 static void 425 cnmac_board_mac_addr(uint8_t *enaddr, size_t size, struct cnmac_softc *sc) 426 { 427 prop_dictionary_t dict; 428 prop_data_t ea; 429 430 dict = device_properties(sc->sc_dev); 431 KASSERT(dict != NULL); 432 ea = prop_dictionary_get(dict, "mac-address"); 433 KASSERT(ea != NULL); 434 memcpy(enaddr, prop_data_value(ea), size); 435 } 436 437 /* ---- media */ 438 439 static int 440 cnmac_mii_readreg(device_t self, int phy_addr, int reg, uint16_t *val) 441 { 442 struct cnmac_softc *sc = device_private(self); 443 444 return octsmi_read(sc->sc_smi, phy_addr, reg, val); 445 } 446 447 static int 448 cnmac_mii_writereg(device_t self, int phy_addr, int reg, uint16_t val) 449 { 450 struct cnmac_softc *sc = device_private(self); 451 452 return octsmi_write(sc->sc_smi, phy_addr, reg, val); 453 } 454 455 static void 456 cnmac_mii_statchg(struct ifnet *ifp) 457 { 458 struct cnmac_softc *sc = ifp->if_softc; 459 460 octpko_port_enable(sc->sc_pko, 0); 461 octgmx_port_enable(sc->sc_gmx_port, 0); 462 463 cnmac_reset(sc); 464 465 if (ISSET(ifp->if_flags, IFF_RUNNING)) 466 octgmx_set_filter(sc->sc_gmx_port); 467 468 octpko_port_enable(sc->sc_pko, 1); 469 octgmx_port_enable(sc->sc_gmx_port, 1); 470 } 471 472 static int 473 cnmac_mediainit(struct cnmac_softc *sc) 474 { 475 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 476 struct mii_data *mii = &sc->sc_mii; 477 prop_object_t phy; 478 479 mii->mii_ifp = ifp; 480 mii->mii_readreg = cnmac_mii_readreg; 481 mii->mii_writereg = cnmac_mii_writereg; 482 mii->mii_statchg = cnmac_mii_statchg; 483 sc->sc_ethercom.ec_mii = mii; 484 485 /* Initialize ifmedia structures. */ 486 ifmedia_init(&mii->mii_media, 0, ether_mediachange, cnmac_mediastatus); 487 488 phy = prop_dictionary_get(device_properties(sc->sc_dev), "phy-addr"); 489 KASSERT(phy != NULL); 490 491 mii_attach(sc->sc_dev, mii, 0xffffffff, prop_number_signed_value(phy), 492 MII_OFFSET_ANY, MIIF_DOPAUSE); 493 494 /* XXX XXX XXX */ 495 if (LIST_FIRST(&mii->mii_phys) != NULL) { 496 /* XXX XXX XXX */ 497 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 498 /* XXX XXX XXX */ 499 } else { 500 /* XXX XXX XXX */ 501 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 502 MII_MEDIA_NONE, NULL); 503 /* XXX XXX XXX */ 504 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 505 /* XXX XXX XXX */ 506 } 507 /* XXX XXX XXX */ 508 509 return 0; 510 } 511 512 static void 513 cnmac_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 514 { 515 struct cnmac_softc *sc = ifp->if_softc; 516 517 mii_pollstat(&sc->sc_mii); 518 519 ifmr->ifm_status = sc->sc_mii.mii_media_status; 520 ifmr->ifm_active = sc->sc_mii.mii_media_active; 521 ifmr->ifm_active = (sc->sc_mii.mii_media_active & ~IFM_ETH_FMASK) | 522 sc->sc_gmx_port->sc_port_flowflags; 523 } 524 525 /* ---- send buffer garbage collection */ 526 527 static inline void 528 cnmac_send_queue_flush_prefetch(struct cnmac_softc *sc) 529 { 530 531 KASSERT(sc->sc_prefetch == 0); 532 octfau_op_inc_fetch_8(&sc->sc_fau_done, 0); 533 sc->sc_prefetch = 1; 534 } 535 536 static inline void 537 cnmac_send_queue_flush_fetch(struct cnmac_softc *sc) 538 { 539 540 KASSERT(sc->sc_prefetch == 1); 541 sc->sc_hard_done_cnt = octfau_op_inc_read_8(&sc->sc_fau_done); 542 KASSERT(sc->sc_hard_done_cnt <= 0); 543 sc->sc_prefetch = 0; 544 } 545 546 static inline void 547 cnmac_send_queue_flush(struct cnmac_softc *sc) 548 { 549 const int64_t sent_count = sc->sc_hard_done_cnt; 550 int i; 551 552 KASSERT(sc->sc_flush == 0); 553 KASSERT(sent_count <= 0); 554 555 for (i = 0; i < 0 - sent_count; i++) { 556 struct mbuf *m; 557 uint64_t *gbuf; 558 559 cnmac_send_queue_del(sc, &m, &gbuf); 560 561 octfpa_buf_put(cnmac_fb_sg, gbuf); 562 563 m_freem(m); 564 565 sc->sc_txbusy = false; 566 } 567 568 octfau_op_inc_fetch_8(&sc->sc_fau_done, i); 569 sc->sc_flush = i; 570 } 571 572 static inline void 573 cnmac_send_queue_flush_sync(struct cnmac_softc *sc) 574 { 575 if (sc->sc_flush == 0) 576 return; 577 578 KASSERT(sc->sc_flush > 0); 579 580 /* XXX XXX XXX */ 581 octfau_op_inc_read_8(&sc->sc_fau_done); 582 sc->sc_soft_req_cnt -= sc->sc_flush; 583 KASSERT(sc->sc_soft_req_cnt >= 0); 584 /* XXX XXX XXX */ 585 586 sc->sc_flush = 0; 587 } 588 589 static inline int 590 cnmac_send_queue_is_full(struct cnmac_softc *sc) 591 { 592 #ifdef CNMAC_SEND_QUEUE_CHECK 593 int64_t nofree_cnt; 594 595 nofree_cnt = sc->sc_soft_req_cnt + sc->sc_hard_done_cnt; 596 597 if (__predict_false(nofree_cnt == GATHER_QUEUE_SIZE - 1)) { 598 cnmac_send_queue_flush(sc); 599 cnmac_send_queue_flush_sync(sc); 600 return 1; 601 } 602 603 #endif 604 return 0; 605 } 606 607 static void 608 cnmac_send_queue_check_and_flush(struct cnmac_softc *sc) 609 { 610 int s; 611 612 /* XXX XXX XXX */ 613 s = splnet(); 614 if (sc->sc_soft_req_cnt > 0) { 615 cnmac_send_queue_flush_prefetch(sc); 616 cnmac_send_queue_flush_fetch(sc); 617 cnmac_send_queue_flush(sc); 618 cnmac_send_queue_flush_sync(sc); 619 } 620 splx(s); 621 /* XXX XXX XXX */ 622 } 623 624 /* 625 * (Ab)use m_nextpkt and m_paddr to maintain mbuf chain and pointer to gather 626 * buffer. Other mbuf members may be used by m_freem(), so don't touch them! 627 */ 628 629 struct _send_queue_entry { 630 union { 631 struct mbuf _sqe_s_mbuf; 632 struct { 633 char _sqe_s_entry_pad[offsetof(struct mbuf, m_nextpkt)]; 634 SIMPLEQ_ENTRY(_send_queue_entry) _sqe_s_entry_entry; 635 } _sqe_s_entry; 636 struct { 637 char _sqe_s_gbuf_pad[offsetof(struct mbuf, m_paddr)]; 638 uint64_t *_sqe_s_gbuf_gbuf; 639 } _sqe_s_gbuf; 640 } _sqe_u; 641 #define _sqe_entry _sqe_u._sqe_s_entry._sqe_s_entry_entry 642 #define _sqe_gbuf _sqe_u._sqe_s_gbuf._sqe_s_gbuf_gbuf 643 }; 644 645 static inline void 646 cnmac_send_queue_add(struct cnmac_softc *sc, struct mbuf *m, 647 uint64_t *gbuf) 648 { 649 struct _send_queue_entry *sqe = (struct _send_queue_entry *)m; 650 651 sqe->_sqe_gbuf = gbuf; 652 SIMPLEQ_INSERT_TAIL(&sc->sc_sendq, sqe, _sqe_entry); 653 654 if ((m->m_flags & M_EXT) && m->m_ext.ext_free != NULL) 655 sc->sc_ext_callback_cnt++; 656 } 657 658 static inline void 659 cnmac_send_queue_del(struct cnmac_softc *sc, struct mbuf **rm, uint64_t **rgbuf) 660 { 661 struct _send_queue_entry *sqe; 662 663 sqe = SIMPLEQ_FIRST(&sc->sc_sendq); 664 KASSERT(sqe != NULL); 665 SIMPLEQ_REMOVE_HEAD(&sc->sc_sendq, _sqe_entry); 666 667 *rm = (void *)sqe; 668 *rgbuf = sqe->_sqe_gbuf; 669 670 if (((*rm)->m_flags & M_EXT) && (*rm)->m_ext.ext_free != NULL) { 671 sc->sc_ext_callback_cnt--; 672 KASSERT(sc->sc_ext_callback_cnt >= 0); 673 } 674 } 675 676 static inline int 677 cnmac_buf_free_work(struct cnmac_softc *sc, uint64_t *work) 678 { 679 680 /* XXX when jumbo frame */ 681 if (ISSET(work[2], PIP_WQE_WORD2_IP_BUFS)) { 682 paddr_t addr; 683 paddr_t start_buffer; 684 685 addr = work[3] & PIP_WQE_WORD3_ADDR; 686 start_buffer = addr & ~(2048 - 1); 687 688 octfpa_buf_put_paddr(cnmac_fb_pkt, start_buffer); 689 } 690 691 octfpa_buf_put(cnmac_fb_wqe, work); 692 693 return 0; 694 } 695 696 static inline void 697 cnmac_buf_ext_free(struct mbuf *m, void *buf, size_t size, void *arg) 698 { 699 octfpa_buf_put(cnmac_fb_pkt, buf); 700 701 KASSERT(m != NULL); 702 703 pool_cache_put(mb_cache, m); 704 } 705 706 /* ---- ifnet interfaces */ 707 708 static int 709 cnmac_ioctl(struct ifnet *ifp, u_long cmd, void *data) 710 { 711 struct cnmac_softc *sc = ifp->if_softc; 712 struct ifreq *ifr = (struct ifreq *)data; 713 int s, error; 714 715 s = splnet(); 716 switch (cmd) { 717 case SIOCSIFMEDIA: 718 /* Flow control requires full-duplex mode. */ 719 if (IFM_SUBTYPE(ifr->ifr_media) == IFM_AUTO || 720 (ifr->ifr_media & IFM_FDX) == 0) { 721 ifr->ifr_media &= ~IFM_ETH_FMASK; 722 } 723 if (IFM_SUBTYPE(ifr->ifr_media) != IFM_AUTO) { 724 if ((ifr->ifr_media & IFM_ETH_FMASK) == IFM_FLOW) { 725 ifr->ifr_media |= 726 IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE; 727 } 728 sc->sc_gmx_port->sc_port_flowflags = 729 ifr->ifr_media & IFM_ETH_FMASK; 730 } 731 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 732 break; 733 default: 734 error = ether_ioctl(ifp, cmd, data); 735 break; 736 } 737 738 if (error == ENETRESET) { 739 if (ISSET(ifp->if_flags, IFF_RUNNING)) 740 octgmx_set_filter(sc->sc_gmx_port); 741 error = 0; 742 } 743 744 cnmac_start(ifp); 745 746 splx(s); 747 748 return error; 749 } 750 751 /* ---- send (output) */ 752 753 static inline uint64_t 754 cnmac_send_makecmd_w0(uint64_t fau0, uint64_t fau1, size_t len, int segs, 755 int ipoffp1) 756 { 757 758 return octpko_cmd_word0( 759 OCT_FAU_OP_SIZE_64, /* sz1 */ 760 OCT_FAU_OP_SIZE_64, /* sz0 */ 761 1, fau1, 1, fau0, /* s1, reg1, s0, reg0 */ 762 0, /* le */ 763 cnmac_param_pko_cmd_w0_n2, /* n2 */ 764 1, 0, /* q, r */ 765 (segs == 1) ? 0 : 1, /* g */ 766 0, 0, 1, /* ipoffp1, ii, df */ 767 segs, (int)len); /* segs, totalbytes */ 768 } 769 770 static inline uint64_t 771 cnmac_send_makecmd_w1(int size, paddr_t addr) 772 { 773 774 return octpko_cmd_word1( 775 0, 0, /* i, back */ 776 OCTEON_POOL_NO_SG, /* pool */ 777 size, addr); /* size, addr */ 778 } 779 780 static inline int 781 cnmac_send_makecmd_gbuf(struct cnmac_softc *sc, struct mbuf *m0, uint64_t *gbuf, 782 int *rsegs) 783 { 784 struct mbuf *m; 785 int segs = 0; 786 uintptr_t laddr, rlen, nlen; 787 788 for (m = m0; m != NULL; m = m->m_next) { 789 790 if (__predict_false(m->m_len == 0)) 791 continue; 792 793 /* Aligned 4k */ 794 laddr = (uintptr_t)m->m_data & (PAGE_SIZE - 1); 795 796 if (laddr + m->m_len > PAGE_SIZE) { 797 /* XXX XXX XXX */ 798 rlen = PAGE_SIZE - laddr; 799 nlen = m->m_len - rlen; 800 *(gbuf + segs) = cnmac_send_makecmd_w1(rlen, 801 kvtophys((vaddr_t)m->m_data)); 802 segs++; 803 if (segs > 63) { 804 return 1; 805 } 806 /* XXX XXX XXX */ 807 } else { 808 rlen = 0; 809 nlen = m->m_len; 810 } 811 812 *(gbuf + segs) = cnmac_send_makecmd_w1(nlen, 813 kvtophys((vaddr_t)(m->m_data + rlen))); 814 segs++; 815 if (segs > 63) { 816 return 1; 817 } 818 } 819 820 KASSERT(m == NULL); 821 822 *rsegs = segs; 823 824 return 0; 825 } 826 827 static inline int 828 cnmac_send_makecmd(struct cnmac_softc *sc, struct mbuf *m, 829 uint64_t *gbuf, uint64_t *rpko_cmd_w0, uint64_t *rpko_cmd_w1) 830 { 831 uint64_t pko_cmd_w0, pko_cmd_w1; 832 int ipoffp1; 833 int segs; 834 int result = 0; 835 836 if (cnmac_send_makecmd_gbuf(sc, m, gbuf, &segs)) { 837 log(LOG_WARNING, "%s: there are a lot of number of segments" 838 " of transmission data", device_xname(sc->sc_dev)); 839 result = 1; 840 goto done; 841 } 842 843 /* Get the IP packet offset for TCP/UDP checksum offloading. */ 844 ipoffp1 = (m->m_pkthdr.csum_flags & (M_CSUM_TCPv4 | M_CSUM_UDPv4)) 845 ? (ETHER_HDR_LEN + 1) : 0; 846 847 /* 848 * segs == 1 -> link mode (single continuous buffer) 849 * WORD1[size] is number of bytes pointed by segment 850 * 851 * segs > 1 -> gather mode (scatter-gather buffer) 852 * WORD1[size] is number of segments 853 */ 854 pko_cmd_w0 = cnmac_send_makecmd_w0(sc->sc_fau_done.fd_regno, 855 0, m->m_pkthdr.len, segs, ipoffp1); 856 if (segs == 1) { 857 pko_cmd_w1 = cnmac_send_makecmd_w1( 858 m->m_pkthdr.len, kvtophys((vaddr_t)m->m_data)); 859 } else { 860 #ifdef __mips_n32 861 KASSERT(MIPS_KSEG0_P(gbuf)); 862 pko_cmd_w1 = cnmac_send_makecmd_w1(segs, 863 MIPS_KSEG0_TO_PHYS(gbuf)); 864 #else 865 pko_cmd_w1 = cnmac_send_makecmd_w1(segs, 866 MIPS_XKPHYS_TO_PHYS(gbuf)); 867 #endif 868 } 869 870 *rpko_cmd_w0 = pko_cmd_w0; 871 *rpko_cmd_w1 = pko_cmd_w1; 872 873 done: 874 return result; 875 } 876 877 static inline int 878 cnmac_send_cmd(struct cnmac_softc *sc, uint64_t pko_cmd_w0, 879 uint64_t pko_cmd_w1, int *pwdc) 880 { 881 uint64_t *cmdptr; 882 int result = 0; 883 884 #ifdef __mips_n32 885 KASSERT((sc->sc_cmdptr.cmdptr & ~MIPS_PHYS_MASK) == 0); 886 cmdptr = (uint64_t *)MIPS_PHYS_TO_KSEG0(sc->sc_cmdptr.cmdptr); 887 #else 888 cmdptr = (uint64_t *)MIPS_PHYS_TO_XKPHYS_CACHED(sc->sc_cmdptr.cmdptr); 889 #endif 890 cmdptr += sc->sc_cmdptr.cmdptr_idx; 891 892 KASSERT(cmdptr != NULL); 893 894 *cmdptr++ = pko_cmd_w0; 895 *cmdptr++ = pko_cmd_w1; 896 897 KASSERT(sc->sc_cmdptr.cmdptr_idx + 2 <= FPA_COMMAND_BUFFER_POOL_NWORDS - 1); 898 899 if (sc->sc_cmdptr.cmdptr_idx + 2 == FPA_COMMAND_BUFFER_POOL_NWORDS - 1) { 900 paddr_t buf; 901 902 buf = octfpa_buf_get_paddr(cnmac_fb_cmd); 903 if (buf == 0) { 904 log(LOG_WARNING, 905 "%s: can not allocate command buffer from free pool allocator\n", 906 device_xname(sc->sc_dev)); 907 result = 1; 908 goto done; 909 } 910 *cmdptr++ = buf; 911 sc->sc_cmdptr.cmdptr = (uint64_t)buf; 912 sc->sc_cmdptr.cmdptr_idx = 0; 913 } else { 914 sc->sc_cmdptr.cmdptr_idx += 2; 915 } 916 917 *pwdc += 2; 918 919 done: 920 return result; 921 } 922 923 static inline int 924 cnmac_send_buf(struct cnmac_softc *sc, struct mbuf *m, uint64_t *gbuf, 925 int *pwdc) 926 { 927 int result = 0, error; 928 uint64_t pko_cmd_w0, pko_cmd_w1; 929 930 error = cnmac_send_makecmd(sc, m, gbuf, &pko_cmd_w0, &pko_cmd_w1); 931 if (error != 0) { 932 /* Already logging */ 933 result = error; 934 goto done; 935 } 936 937 error = cnmac_send_cmd(sc, pko_cmd_w0, pko_cmd_w1, pwdc); 938 if (error != 0) { 939 /* Already logging */ 940 result = error; 941 } 942 943 done: 944 return result; 945 } 946 947 static inline int 948 cnmac_send(struct cnmac_softc *sc, struct mbuf *m, int *pwdc) 949 { 950 paddr_t gaddr = 0; 951 uint64_t *gbuf = NULL; 952 int result = 0, error; 953 954 gaddr = octfpa_buf_get_paddr(cnmac_fb_sg); 955 if (gaddr == 0) { 956 log(LOG_WARNING, "%s: can not allocate gather buffer from " 957 "free pool allocator\n", device_xname(sc->sc_dev)); 958 result = 1; 959 goto done; 960 } 961 962 #ifdef __mips_n32 963 KASSERT((gaddr & ~MIPS_PHYS_MASK) == 0); 964 gbuf = (uint64_t *)(uintptr_t)MIPS_PHYS_TO_KSEG0(gaddr); 965 #else 966 gbuf = (uint64_t *)(uintptr_t)MIPS_PHYS_TO_XKPHYS_CACHED(gaddr); 967 #endif 968 969 KASSERT(gbuf != NULL); 970 971 error = cnmac_send_buf(sc, m, gbuf, pwdc); 972 if (error != 0) { 973 /* Already logging */ 974 octfpa_buf_put_paddr(cnmac_fb_sg, gaddr); 975 result = error; 976 goto done; 977 } 978 979 cnmac_send_queue_add(sc, m, gbuf); 980 981 done: 982 return result; 983 } 984 985 static void 986 cnmac_start(struct ifnet *ifp) 987 { 988 struct cnmac_softc *sc = ifp->if_softc; 989 struct mbuf *m; 990 int wdc = 0; 991 992 /* 993 * Performance tuning 994 * pre-send iobdma request 995 */ 996 cnmac_send_queue_flush_prefetch(sc); 997 998 if ((ifp->if_flags & IFF_RUNNING) == 0) 999 goto last; 1000 1001 if (sc->sc_txbusy) 1002 goto last; 1003 1004 if (__predict_false(!octgmx_link_status(sc->sc_gmx_port))) 1005 goto last; 1006 1007 for (;;) { 1008 IFQ_POLL(&ifp->if_snd, m); 1009 if (__predict_false(m == NULL)) 1010 break; 1011 1012 /* XXX XXX XXX */ 1013 cnmac_send_queue_flush_fetch(sc); 1014 1015 /* 1016 * If no free send buffer is available, free all the sent 1017 * buffers and bail out. 1018 */ 1019 if (cnmac_send_queue_is_full(sc)) { 1020 sc->sc_txbusy = true; 1021 if (wdc > 0) 1022 octpko_op_doorbell_write(sc->sc_port, 1023 sc->sc_port, wdc); 1024 callout_schedule(&sc->sc_tick_free_ch, 1); 1025 return; 1026 } 1027 /* XXX XXX XXX */ 1028 1029 IFQ_DEQUEUE(&ifp->if_snd, m); 1030 1031 bpf_mtap(ifp, m, BPF_D_OUT); 1032 1033 /* XXX XXX XXX */ 1034 if (sc->sc_soft_req_cnt > sc->sc_soft_req_thresh) 1035 cnmac_send_queue_flush(sc); 1036 if (cnmac_send(sc, m, &wdc)) { 1037 IF_DROP(&ifp->if_snd); 1038 m_freem(m); 1039 log(LOG_WARNING, 1040 "%s: failed in the transmission of the packet\n", 1041 device_xname(sc->sc_dev)); 1042 } else 1043 sc->sc_soft_req_cnt++; 1044 1045 if (sc->sc_flush) 1046 cnmac_send_queue_flush_sync(sc); 1047 /* XXX XXX XXX */ 1048 1049 /* Send next iobdma request */ 1050 cnmac_send_queue_flush_prefetch(sc); 1051 } 1052 1053 if (wdc > 0) 1054 octpko_op_doorbell_write(sc->sc_port, sc->sc_port, wdc); 1055 1056 last: 1057 cnmac_send_queue_flush_fetch(sc); 1058 callout_schedule(&sc->sc_tick_free_ch, 1); 1059 } 1060 1061 static void 1062 cnmac_watchdog(struct ifnet *ifp) 1063 { 1064 struct cnmac_softc *sc = ifp->if_softc; 1065 1066 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1067 1068 cnmac_configure(sc); 1069 1070 SET(ifp->if_flags, IFF_RUNNING); 1071 sc->sc_txbusy = false; 1072 ifp->if_timer = 0; 1073 1074 cnmac_start(ifp); 1075 } 1076 1077 static int 1078 cnmac_init(struct ifnet *ifp) 1079 { 1080 struct cnmac_softc *sc = ifp->if_softc; 1081 1082 /* XXX don't disable commonly used parts!!! XXX */ 1083 if (sc->sc_init_flag == 0) { 1084 /* Cancel any pending I/O. */ 1085 cnmac_stop(ifp, 0); 1086 1087 /* Initialize the device */ 1088 cnmac_configure(sc); 1089 1090 octpko_enable(sc->sc_pko); 1091 octipd_enable(sc->sc_ipd); 1092 1093 sc->sc_init_flag = 1; 1094 } else { 1095 octgmx_port_enable(sc->sc_gmx_port, 1); 1096 } 1097 mii_ifmedia_change(&sc->sc_mii); 1098 1099 octgmx_set_filter(sc->sc_gmx_port); 1100 1101 callout_schedule(&sc->sc_tick_misc_ch, hz); 1102 callout_schedule(&sc->sc_tick_free_ch, hz); 1103 1104 SET(ifp->if_flags, IFF_RUNNING); 1105 sc->sc_txbusy = false; 1106 1107 return 0; 1108 } 1109 1110 static void 1111 cnmac_stop(struct ifnet *ifp, int disable) 1112 { 1113 struct cnmac_softc *sc = ifp->if_softc; 1114 1115 callout_stop(&sc->sc_tick_misc_ch); 1116 callout_stop(&sc->sc_tick_free_ch); 1117 1118 mii_down(&sc->sc_mii); 1119 1120 octgmx_port_enable(sc->sc_gmx_port, 0); 1121 1122 /* Mark the interface as down and cancel the watchdog timer. */ 1123 CLR(ifp->if_flags, IFF_RUNNING); 1124 sc->sc_txbusy = false; 1125 ifp->if_timer = 0; 1126 } 1127 1128 /* ---- misc */ 1129 1130 static int 1131 cnmac_reset(struct cnmac_softc *sc) 1132 { 1133 octgmx_reset_speed(sc->sc_gmx_port); 1134 octgmx_reset_flowctl(sc->sc_gmx_port); 1135 octgmx_reset_timing(sc->sc_gmx_port); 1136 1137 return 0; 1138 } 1139 1140 static int 1141 cnmac_configure(struct cnmac_softc *sc) 1142 { 1143 octgmx_port_enable(sc->sc_gmx_port, 0); 1144 1145 cnmac_reset(sc); 1146 1147 cnmac_configure_common(sc); 1148 1149 octpko_port_config(sc->sc_pko); 1150 octpko_port_enable(sc->sc_pko, 1); 1151 octpow_config(sc->sc_pow, sc->sc_powgroup); 1152 1153 octgmx_tx_stats_rd_clr(sc->sc_gmx_port, 1); 1154 octgmx_rx_stats_rd_clr(sc->sc_gmx_port, 1); 1155 1156 octgmx_port_enable(sc->sc_gmx_port, 1); 1157 1158 return 0; 1159 } 1160 1161 static int 1162 cnmac_configure_common(struct cnmac_softc *sc) 1163 { 1164 static int once; 1165 1166 if (once == 1) 1167 return 0; 1168 once = 1; 1169 1170 octipd_config(sc->sc_ipd); 1171 octpko_config(sc->sc_pko); 1172 1173 return 0; 1174 } 1175 1176 /* ---- receive (input) */ 1177 1178 static inline int 1179 cnmac_recv_mbuf(struct cnmac_softc *sc, uint64_t *work, struct mbuf **rm) 1180 { 1181 struct mbuf *m; 1182 vaddr_t addr; 1183 vaddr_t ext_buf; 1184 size_t ext_size; 1185 uint64_t word1 = work[1]; 1186 uint64_t word2 = work[2]; 1187 uint64_t word3 = work[3]; 1188 1189 MGETHDR(m, M_NOWAIT, MT_DATA); 1190 if (m == NULL) 1191 return 1; 1192 1193 octfpa_buf_put(cnmac_fb_wqe, work); 1194 1195 if (__SHIFTOUT(word2, PIP_WQE_WORD2_IP_BUFS) != 1) 1196 panic("%s: expected one buffer, got %" PRId64, __func__, 1197 __SHIFTOUT(word2, PIP_WQE_WORD2_IP_BUFS)); 1198 1199 1200 #ifdef __mips_n32 1201 KASSERT((word3 & ~MIPS_PHYS_MASK) == 0); 1202 addr = MIPS_PHYS_TO_KSEG0(word3 & PIP_WQE_WORD3_ADDR); 1203 #else 1204 addr = MIPS_PHYS_TO_XKPHYS_CACHED(word3 & PIP_WQE_WORD3_ADDR); 1205 #endif 1206 1207 ext_size = OCTEON_POOL_SIZE_PKT; 1208 ext_buf = addr & ~(ext_size - 1); 1209 MEXTADD(m, ext_buf, ext_size, 0, cnmac_buf_ext_free, NULL); 1210 1211 m->m_data = (void *)addr; 1212 m->m_len = m->m_pkthdr.len = (word1 & PIP_WQE_WORD1_LEN) >> 48; 1213 m_set_rcvif(m, &sc->sc_ethercom.ec_if); 1214 1215 /* Not readonly buffer */ 1216 m->m_flags |= M_EXT_RW; 1217 1218 *rm = m; 1219 1220 KASSERT(*rm != NULL); 1221 1222 return 0; 1223 } 1224 1225 static inline int 1226 cnmac_recv_check(struct cnmac_softc *sc, uint64_t word2) 1227 { 1228 static struct timeval rxerr_log_interval = { 0, 2500000 }; 1229 uint64_t opecode; 1230 1231 if (__predict_true(!ISSET(word2, PIP_WQE_WORD2_NOIP_RE))) 1232 return 0; 1233 1234 opecode = word2 & PIP_WQE_WORD2_NOIP_OPECODE; 1235 if ((sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) && 1236 ratecheck(&sc->sc_rxerr_log_last, &rxerr_log_interval)) 1237 log(LOG_DEBUG, "%s: rx error (%"PRId64")\n", 1238 device_xname(sc->sc_dev), opecode); 1239 1240 /* This error is harmless */ 1241 if (opecode == PIP_WQE_WORD2_RE_OPCODE_OVRRUN) 1242 return 0; 1243 1244 return 1; 1245 } 1246 1247 static inline int 1248 cnmac_recv(struct cnmac_softc *sc, uint64_t *work) 1249 { 1250 struct ifnet *ifp; 1251 struct mbuf *m; 1252 uint64_t word2; 1253 1254 KASSERT(sc != NULL); 1255 KASSERT(work != NULL); 1256 1257 word2 = work[2]; 1258 ifp = &sc->sc_ethercom.ec_if; 1259 1260 KASSERT(ifp != NULL); 1261 1262 if (!ISSET(ifp->if_flags, IFF_RUNNING)) 1263 goto drop; 1264 1265 if (__predict_false(cnmac_recv_check(sc, word2) != 0)) { 1266 if_statinc(ifp, if_ierrors); 1267 goto drop; 1268 } 1269 1270 if (__predict_false(cnmac_recv_mbuf(sc, work, &m) != 0)) { 1271 if_statinc(ifp, if_ierrors); 1272 goto drop; 1273 } 1274 1275 /* work[0] .. work[3] may not be valid any more */ 1276 1277 KASSERT(m != NULL); 1278 1279 octipd_offload(word2, m->m_data, &m->m_pkthdr.csum_flags); 1280 1281 if_percpuq_enqueue(ifp->if_percpuq, m); 1282 1283 return 0; 1284 1285 drop: 1286 cnmac_buf_free_work(sc, work); 1287 return 1; 1288 } 1289 1290 static int 1291 cnmac_intr(void *arg) 1292 { 1293 struct cnmac_softc *sc = arg; 1294 uint64_t *work; 1295 uint64_t wqmask = __BIT(sc->sc_powgroup); 1296 uint32_t coreid = 0; /* XXX octeon_get_coreid() */ 1297 uint32_t port; 1298 1299 _POW_WR8(sc->sc_pow, POW_PP_GRP_MSK_OFFSET(coreid), wqmask); 1300 1301 octpow_tag_sw_wait(); 1302 octpow_work_request_async(OCTEON_CVMSEG_OFFSET(csm_pow_intr), 1303 POW_NO_WAIT); 1304 1305 for (;;) { 1306 work = (uint64_t *)octpow_work_response_async( 1307 OCTEON_CVMSEG_OFFSET(csm_pow_intr)); 1308 if (work == NULL) 1309 break; 1310 1311 octpow_tag_sw_wait(); 1312 octpow_work_request_async(OCTEON_CVMSEG_OFFSET(csm_pow_intr), 1313 POW_NO_WAIT); 1314 1315 port = __SHIFTOUT(work[1], PIP_WQE_WORD1_IPRT); 1316 if (port != sc->sc_port) { 1317 printf("%s: unexpected wqe port %u, should be %u\n", 1318 device_xname(sc->sc_dev), port, sc->sc_port); 1319 goto wqe_error; 1320 } 1321 1322 (void)cnmac_recv(sc, work); 1323 1324 cnmac_send_queue_check_and_flush(sc); 1325 } 1326 1327 _POW_WR8(sc->sc_pow, POW_WQ_INT_OFFSET, wqmask); 1328 1329 return 1; 1330 1331 wqe_error: 1332 printf("word0: 0x%016" PRIx64 "\n", work[0]); 1333 printf("word1: 0x%016" PRIx64 "\n", work[1]); 1334 printf("word2: 0x%016" PRIx64 "\n", work[2]); 1335 printf("word3: 0x%016" PRIx64 "\n", work[3]); 1336 panic("wqe_error"); 1337 } 1338 1339 /* ---- tick */ 1340 1341 /* 1342 * cnmac_tick_free 1343 * 1344 * => garbage collect send gather buffer / mbuf 1345 * => called at softclock 1346 */ 1347 static void 1348 cnmac_tick_free(void *arg) 1349 { 1350 struct cnmac_softc *sc = arg; 1351 int timo; 1352 1353 cnmac_send_queue_check_and_flush(sc); 1354 1355 timo = (sc->sc_ext_callback_cnt > 0) ? 1 : hz; 1356 callout_schedule(&sc->sc_tick_free_ch, timo); 1357 } 1358 1359 /* 1360 * cnmac_tick_misc 1361 * 1362 * => collect statistics 1363 * => check link status 1364 * => called at softclock 1365 */ 1366 static void 1367 cnmac_tick_misc(void *arg) 1368 { 1369 struct cnmac_softc *sc = arg; 1370 struct ifnet *ifp; 1371 int s; 1372 1373 s = splnet(); 1374 1375 ifp = &sc->sc_ethercom.ec_if; 1376 1377 octgmx_stats(sc->sc_gmx_port); 1378 octpip_stats(sc->sc_pip, ifp, sc->sc_port); 1379 mii_tick(&sc->sc_mii); 1380 1381 splx(s); 1382 1383 callout_schedule(&sc->sc_tick_misc_ch, hz); 1384 } 1385
Indexes created Fri Sep 26 20:09:58 GMT 2025