if_cnmac.c revision 1.25
1/* $NetBSD: if_cnmac.c,v 1.25 2021/05/27 01:43:32 simonb 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 1.25 2021/05/27 01:43:32 simonb 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 104static void cnmac_buf_init(struct cnmac_softc *); 105 106static int cnmac_match(device_t, struct cfdata *, void *); 107static void cnmac_attach(device_t, device_t, void *); 108static void cnmac_pip_init(struct cnmac_softc *); 109static void cnmac_ipd_init(struct cnmac_softc *); 110static void cnmac_pko_init(struct cnmac_softc *); 111 112static void cnmac_board_mac_addr(uint8_t *, size_t, struct cnmac_softc *); 113 114static int cnmac_mii_readreg(device_t, int, int, uint16_t *); 115static int cnmac_mii_writereg(device_t, int, int, uint16_t); 116static void cnmac_mii_statchg(struct ifnet *); 117 118static int cnmac_mediainit(struct cnmac_softc *); 119static void cnmac_mediastatus(struct ifnet *, struct ifmediareq *); 120 121static inline void cnmac_send_queue_flush_prefetch(struct cnmac_softc *); 122static inline void cnmac_send_queue_flush_fetch(struct cnmac_softc *); 123static inline void cnmac_send_queue_flush(struct cnmac_softc *); 124static inline void cnmac_send_queue_flush_sync(struct cnmac_softc *); 125static inline int cnmac_send_queue_is_full(struct cnmac_softc *); 126static inline void cnmac_send_queue_add(struct cnmac_softc *, struct mbuf *, 127 uint64_t *); 128static inline void cnmac_send_queue_del(struct cnmac_softc *, struct mbuf **, 129 uint64_t **); 130static inline int cnmac_buf_free_work(struct cnmac_softc *, uint64_t *); 131static inline void cnmac_buf_ext_free(struct mbuf *, void *, size_t, void *); 132 133static int cnmac_ioctl(struct ifnet *, u_long, void *); 134static void cnmac_watchdog(struct ifnet *); 135static int cnmac_init(struct ifnet *); 136static void cnmac_stop(struct ifnet *, int); 137static void cnmac_start(struct ifnet *); 138 139static inline int cnmac_send_cmd(struct cnmac_softc *, uint64_t, uint64_t, 140 int *); 141static inline uint64_t cnmac_send_makecmd_w1(int, paddr_t); 142static inline uint64_t cnmac_send_makecmd_w0(uint64_t, uint64_t, size_t, int, 143 int); 144static inline int cnmac_send_makecmd_gbuf(struct cnmac_softc *, struct mbuf *, 145 uint64_t *, int *); 146static inline int cnmac_send_makecmd(struct cnmac_softc *, struct mbuf *, 147 uint64_t *, uint64_t *, uint64_t *); 148static inline int cnmac_send_buf(struct cnmac_softc *, struct mbuf *, 149 uint64_t *, int *); 150static inline int cnmac_send(struct cnmac_softc *, struct mbuf *, int *); 151 152static int cnmac_reset(struct cnmac_softc *); 153static int cnmac_configure(struct cnmac_softc *); 154static int cnmac_configure_common(struct cnmac_softc *); 155 156static void cnmac_tick_free(void *); 157static void cnmac_tick_misc(void *); 158 159static inline int cnmac_recv_mbuf(struct cnmac_softc *, uint64_t *, 160 struct mbuf **); 161static inline int cnmac_recv_check(struct cnmac_softc *, uint64_t); 162static inline int cnmac_recv(struct cnmac_softc *, uint64_t *); 163static int cnmac_intr(void *); 164 165/* device parameters */ 166int cnmac_param_pko_cmd_w0_n2 = 1; 167 168CFATTACH_DECL_NEW(cnmac, sizeof(struct cnmac_softc), 169 cnmac_match, cnmac_attach, NULL, NULL); 170 171/* ---- buffer management */ 172 173static const struct cnmac_pool_param { 174 int poolno; 175 size_t size; 176 size_t nelems; 177} cnmac_pool_params[] = { 178#define _ENTRY(x) { OCTEON_POOL_NO_##x, OCTEON_POOL_SIZE_##x, OCTEON_POOL_NELEMS_##x } 179 _ENTRY(PKT), 180 _ENTRY(WQE), 181 _ENTRY(CMD), 182 _ENTRY(SG) 183#undef _ENTRY 184}; 185struct octfpa_buf *cnmac_pools[FPA_NPOOLS]; 186#define cnmac_fb_pkt cnmac_pools[OCTEON_POOL_NO_PKT] 187#define cnmac_fb_wqe cnmac_pools[OCTEON_POOL_NO_WQE] 188#define cnmac_fb_cmd cnmac_pools[OCTEON_POOL_NO_CMD] 189#define cnmac_fb_sg cnmac_pools[OCTEON_POOL_NO_SG] 190 191static int cnmac_npowgroups = 0; 192 193static void 194cnmac_buf_init(struct cnmac_softc *sc) 195{ 196 static int once; 197 int i; 198 const struct cnmac_pool_param *pp; 199 struct octfpa_buf *fb; 200 201 if (once == 1) 202 return; 203 once = 1; 204 205 for (i = 0; i < (int)__arraycount(cnmac_pool_params); i++) { 206 pp = &cnmac_pool_params[i]; 207 octfpa_buf_init(pp->poolno, pp->size, pp->nelems, &fb); 208 cnmac_pools[i] = fb; 209 } 210} 211 212/* ---- autoconf */ 213 214static int 215cnmac_match(device_t parent, struct cfdata *match, void *aux) 216{ 217 struct octgmx_attach_args *ga = aux; 218 219 if (strcmp(match->cf_name, ga->ga_name) != 0) { 220 return 0; 221 } 222 return 1; 223} 224 225static void 226cnmac_attach(device_t parent, device_t self, void *aux) 227{ 228 struct cnmac_softc *sc = device_private(self); 229 struct octgmx_attach_args *ga = aux; 230 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 231 prop_dictionary_t dict; 232 prop_object_t clk; 233 uint8_t enaddr[ETHER_ADDR_LEN]; 234 235 if (cnmac_npowgroups >= OCTEON_POW_GROUP_MAX) { 236 printf(": out of POW groups\n"); 237 } 238 239 sc->sc_dev = self; 240 sc->sc_regt = ga->ga_regt; 241 sc->sc_port = ga->ga_portno; 242 sc->sc_port_type = ga->ga_port_type; 243 sc->sc_gmx = ga->ga_gmx; 244 sc->sc_gmx_port = ga->ga_gmx_port; 245 sc->sc_smi = ga->ga_smi; 246 sc->sc_powgroup = cnmac_npowgroups++; 247 248 if (sc->sc_port >= CVMSEG_LM_ETHER_COUNT) { 249 /* 250 * If we got here, increase CVMSEG_LM_ETHER_COUNT 251 * in octeonvar.h . 252 */ 253 printf("%s: ERROR out of CVMSEG LM buffers\n", 254 device_xname(self)); 255 return; 256 } 257 258 sc->sc_init_flag = 0; 259 /* 260 * XXXUEBAYASI 261 * Setting PIP_IP_OFFSET[OFFSET] to 8 causes panic ... why??? 262 */ 263 sc->sc_ip_offset = 0/* XXX */; 264 265 if (MIPS_PRID_IMPL(mips_options.mips_cpu_id) <= MIPS_CN30XX) { 266 SET(sc->sc_quirks, CNMAC_QUIRKS_NO_PRE_ALIGN); 267 SET(sc->sc_quirks, CNMAC_QUIRKS_NO_RX_INBND); 268 } 269 270 cnmac_board_mac_addr(enaddr, sizeof(enaddr), sc); 271 printf("%s: Ethernet address %s\n", device_xname(self), 272 ether_sprintf(enaddr)); 273 274 SIMPLEQ_INIT(&sc->sc_sendq); 275 sc->sc_soft_req_thresh = 15/* XXX */; 276 sc->sc_ext_callback_cnt = 0; 277 278 octgmx_stats_init(sc->sc_gmx_port); 279 280 callout_init(&sc->sc_tick_misc_ch, 0); 281 callout_setfunc(&sc->sc_tick_misc_ch, cnmac_tick_misc, sc); 282 283 callout_init(&sc->sc_tick_free_ch, 0); 284 callout_setfunc(&sc->sc_tick_free_ch, cnmac_tick_free, sc); 285 286 const int dv_unit = device_unit(self); 287 octfau_op_init(&sc->sc_fau_done, 288 OCTEON_CVMSEG_ETHER_OFFSET(dv_unit, csm_ether_fau_done), 289 OCT_FAU_REG_ADDR_END - (8 * (dv_unit + 1))/* XXX */); 290 octfau_op_set_8(&sc->sc_fau_done, 0); 291 292 cnmac_pip_init(sc); 293 cnmac_ipd_init(sc); 294 cnmac_pko_init(sc); 295 296 cnmac_configure_common(sc); 297 298 sc->sc_gmx_port->sc_ipd = sc->sc_ipd; 299 sc->sc_gmx_port->sc_port_mii = &sc->sc_mii; 300 sc->sc_gmx_port->sc_port_ec = &sc->sc_ethercom; 301 /* XXX */ 302 sc->sc_gmx_port->sc_quirks = sc->sc_quirks; 303 304 /* XXX */ 305 sc->sc_pow = &octpow_softc; 306 307 cnmac_mediainit(sc); 308 309 strncpy(ifp->if_xname, device_xname(self), sizeof(ifp->if_xname)); 310 ifp->if_softc = sc; 311 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 312 ifp->if_ioctl = cnmac_ioctl; 313 ifp->if_start = cnmac_start; 314 ifp->if_watchdog = cnmac_watchdog; 315 ifp->if_init = cnmac_init; 316 ifp->if_stop = cnmac_stop; 317 IFQ_SET_MAXLEN(&ifp->if_snd, uimax(GATHER_QUEUE_SIZE, IFQ_MAXLEN)); 318 IFQ_SET_READY(&ifp->if_snd); 319 320 321 ifp->if_capabilities = 322#if 0 /* XXX: no tx checksum yet */ 323 IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx | 324 IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx | 325 IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx | 326 IFCAP_CSUM_TCPv6_Tx | IFCAP_CSUM_TCPv6_Rx | 327 IFCAP_CSUM_UDPv6_Tx | IFCAP_CSUM_UDPv6_Rx; 328#else 329 IFCAP_CSUM_IPv4_Rx | IFCAP_CSUM_TCPv4_Rx | IFCAP_CSUM_UDPv4_Rx | 330 IFCAP_CSUM_TCPv6_Rx | IFCAP_CSUM_UDPv6_Rx; 331#endif 332 333 /* 802.1Q VLAN-sized frames are supported */ 334 sc->sc_ethercom.ec_capabilities |= ETHERCAP_VLAN_MTU; 335 336 octgmx_set_mac_addr(sc->sc_gmx_port, enaddr); 337 338 if_attach(ifp); 339 ether_ifattach(ifp, enaddr); 340 octgmx_set_filter(sc->sc_gmx_port); 341 342#if 1 343 cnmac_buf_init(sc); 344#endif 345 346 sc->sc_ih = octeon_intr_establish(POW_WORKQ_IRQ(sc->sc_powgroup), 347 IPL_NET, cnmac_intr, sc); 348 if (sc->sc_ih == NULL) 349 panic("%s: could not set up interrupt", device_xname(self)); 350 351 dict = device_properties(sc->sc_gmx->sc_dev); 352 353 clk = prop_dictionary_get(dict, "rgmii-tx"); 354 if (clk) 355 sc->sc_gmx_port->sc_clk_tx_setting = 356 prop_number_signed_value(clk); 357 clk = prop_dictionary_get(dict, "rgmii-rx"); 358 if (clk) 359 sc->sc_gmx_port->sc_clk_rx_setting = 360 prop_number_signed_value(clk); 361} 362 363/* ---- submodules */ 364 365/* XXX */ 366static void 367cnmac_pip_init(struct cnmac_softc *sc) 368{ 369 struct octpip_attach_args pip_aa; 370 371 pip_aa.aa_port = sc->sc_port; 372 pip_aa.aa_regt = sc->sc_regt; 373 pip_aa.aa_tag_type = POW_TAG_TYPE_ORDERED/* XXX */; 374 pip_aa.aa_receive_group = sc->sc_powgroup; 375 pip_aa.aa_ip_offset = sc->sc_ip_offset; 376 octpip_init(&pip_aa, &sc->sc_pip); 377 octpip_port_config(sc->sc_pip); 378} 379 380/* XXX */ 381static void 382cnmac_ipd_init(struct cnmac_softc *sc) 383{ 384 struct octipd_attach_args ipd_aa; 385 386 ipd_aa.aa_port = sc->sc_port; 387 ipd_aa.aa_regt = sc->sc_regt; 388 ipd_aa.aa_first_mbuff_skip = 184/* XXX */; 389 ipd_aa.aa_not_first_mbuff_skip = 0/* XXX */; 390 octipd_init(&ipd_aa, &sc->sc_ipd); 391} 392 393/* XXX */ 394static void 395cnmac_pko_init(struct cnmac_softc *sc) 396{ 397 struct octpko_attach_args pko_aa; 398 399 pko_aa.aa_port = sc->sc_port; 400 pko_aa.aa_regt = sc->sc_regt; 401 pko_aa.aa_cmdptr = &sc->sc_cmdptr; 402 pko_aa.aa_cmd_buf_pool = OCTEON_POOL_NO_CMD; 403 pko_aa.aa_cmd_buf_size = OCTEON_POOL_NWORDS_CMD; 404 octpko_init(&pko_aa, &sc->sc_pko); 405} 406 407/* ---- XXX */ 408 409#define ADDR2UINT64(u, a) \ 410 do { \ 411 u = \ 412 (((uint64_t)a[0] << 40) | ((uint64_t)a[1] << 32) | \ 413 ((uint64_t)a[2] << 24) | ((uint64_t)a[3] << 16) | \ 414 ((uint64_t)a[4] << 8) | ((uint64_t)a[5] << 0)); \ 415 } while (0) 416#define UINT642ADDR(a, u) \ 417 do { \ 418 a[0] = (uint8_t)((u) >> 40); a[1] = (uint8_t)((u) >> 32); \ 419 a[2] = (uint8_t)((u) >> 24); a[3] = (uint8_t)((u) >> 16); \ 420 a[4] = (uint8_t)((u) >> 8); a[5] = (uint8_t)((u) >> 0); \ 421 } while (0) 422 423static void 424cnmac_board_mac_addr(uint8_t *enaddr, size_t size, struct cnmac_softc *sc) 425{ 426 prop_dictionary_t dict; 427 prop_data_t ea; 428 429 dict = device_properties(sc->sc_dev); 430 KASSERT(dict != NULL); 431 ea = prop_dictionary_get(dict, "mac-address"); 432 KASSERT(ea != NULL); 433 memcpy(enaddr, prop_data_value(ea), size); 434} 435 436/* ---- media */ 437 438static int 439cnmac_mii_readreg(device_t self, int phy_addr, int reg, uint16_t *val) 440{ 441 struct cnmac_softc *sc = device_private(self); 442 443 return octsmi_read(sc->sc_smi, phy_addr, reg, val); 444} 445 446static int 447cnmac_mii_writereg(device_t self, int phy_addr, int reg, uint16_t val) 448{ 449 struct cnmac_softc *sc = device_private(self); 450 451 return octsmi_write(sc->sc_smi, phy_addr, reg, val); 452} 453 454static void 455cnmac_mii_statchg(struct ifnet *ifp) 456{ 457 struct cnmac_softc *sc = ifp->if_softc; 458 459 octpko_port_enable(sc->sc_pko, 0); 460 octgmx_port_enable(sc->sc_gmx_port, 0); 461 462 cnmac_reset(sc); 463 464 if (ISSET(ifp->if_flags, IFF_RUNNING)) 465 octgmx_set_filter(sc->sc_gmx_port); 466 467 octpko_port_enable(sc->sc_pko, 1); 468 octgmx_port_enable(sc->sc_gmx_port, 1); 469} 470 471static int 472cnmac_mediainit(struct cnmac_softc *sc) 473{ 474 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 475 struct mii_data *mii = &sc->sc_mii; 476 prop_object_t phy; 477 478 mii->mii_ifp = ifp; 479 mii->mii_readreg = cnmac_mii_readreg; 480 mii->mii_writereg = cnmac_mii_writereg; 481 mii->mii_statchg = cnmac_mii_statchg; 482 sc->sc_ethercom.ec_mii = mii; 483 484 /* Initialize ifmedia structures. */ 485 ifmedia_init(&mii->mii_media, 0, ether_mediachange, cnmac_mediastatus); 486 487 phy = prop_dictionary_get(device_properties(sc->sc_dev), "phy-addr"); 488 KASSERT(phy != NULL); 489 490 mii_attach(sc->sc_dev, mii, 0xffffffff, prop_number_signed_value(phy), 491 MII_OFFSET_ANY, MIIF_DOPAUSE); 492 493 /* XXX XXX XXX */ 494 if (LIST_FIRST(&mii->mii_phys) != NULL) { 495 /* XXX XXX XXX */ 496 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 497 /* XXX XXX XXX */ 498 } else { 499 /* XXX XXX XXX */ 500 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 501 MII_MEDIA_NONE, NULL); 502 /* XXX XXX XXX */ 503 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 504 /* XXX XXX XXX */ 505 } 506 /* XXX XXX XXX */ 507 508 return 0; 509} 510 511static void 512cnmac_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 513{ 514 struct cnmac_softc *sc = ifp->if_softc; 515 516 mii_pollstat(&sc->sc_mii); 517 518 ifmr->ifm_status = sc->sc_mii.mii_media_status; 519 ifmr->ifm_active = sc->sc_mii.mii_media_active; 520 ifmr->ifm_active = (sc->sc_mii.mii_media_active & ~IFM_ETH_FMASK) | 521 sc->sc_gmx_port->sc_port_flowflags; 522} 523 524/* ---- send buffer garbage collection */ 525 526static inline void 527cnmac_send_queue_flush_prefetch(struct cnmac_softc *sc) 528{ 529 530 KASSERT(sc->sc_prefetch == 0); 531 octfau_op_inc_fetch_8(&sc->sc_fau_done, 0); 532 sc->sc_prefetch = 1; 533} 534 535static inline void 536cnmac_send_queue_flush_fetch(struct cnmac_softc *sc) 537{ 538 539 KASSERT(sc->sc_prefetch == 1); 540 sc->sc_hard_done_cnt = octfau_op_inc_read_8(&sc->sc_fau_done); 541 KASSERT(sc->sc_hard_done_cnt <= 0); 542 sc->sc_prefetch = 0; 543} 544 545static inline void 546cnmac_send_queue_flush(struct cnmac_softc *sc) 547{ 548 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 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 CLR(ifp->if_flags, IFF_OACTIVE); 566 } 567 568 octfau_op_inc_fetch_8(&sc->sc_fau_done, i); 569 sc->sc_flush = i; 570} 571 572static inline void 573cnmac_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 589static inline int 590cnmac_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/* 608 * (Ab)use m_nextpkt and m_paddr to maintain mbuf chain and pointer to gather 609 * buffer. Other mbuf members may be used by m_freem(), so don't touch them! 610 */ 611 612struct _send_queue_entry { 613 union { 614 struct mbuf _sqe_s_mbuf; 615 struct { 616 char _sqe_s_entry_pad[offsetof(struct mbuf, m_nextpkt)]; 617 SIMPLEQ_ENTRY(_send_queue_entry) _sqe_s_entry_entry; 618 } _sqe_s_entry; 619 struct { 620 char _sqe_s_gbuf_pad[offsetof(struct mbuf, m_paddr)]; 621 uint64_t *_sqe_s_gbuf_gbuf; 622 } _sqe_s_gbuf; 623 } _sqe_u; 624#define _sqe_entry _sqe_u._sqe_s_entry._sqe_s_entry_entry 625#define _sqe_gbuf _sqe_u._sqe_s_gbuf._sqe_s_gbuf_gbuf 626}; 627 628static inline void 629cnmac_send_queue_add(struct cnmac_softc *sc, struct mbuf *m, 630 uint64_t *gbuf) 631{ 632 struct _send_queue_entry *sqe = (struct _send_queue_entry *)m; 633 634 sqe->_sqe_gbuf = gbuf; 635 SIMPLEQ_INSERT_TAIL(&sc->sc_sendq, sqe, _sqe_entry); 636 637 if ((m->m_flags & M_EXT) && m->m_ext.ext_free != NULL) 638 sc->sc_ext_callback_cnt++; 639} 640 641static inline void 642cnmac_send_queue_del(struct cnmac_softc *sc, struct mbuf **rm, uint64_t **rgbuf) 643{ 644 struct _send_queue_entry *sqe; 645 646 sqe = SIMPLEQ_FIRST(&sc->sc_sendq); 647 KASSERT(sqe != NULL); 648 SIMPLEQ_REMOVE_HEAD(&sc->sc_sendq, _sqe_entry); 649 650 *rm = (void *)sqe; 651 *rgbuf = sqe->_sqe_gbuf; 652 653 if (((*rm)->m_flags & M_EXT) && (*rm)->m_ext.ext_free != NULL) { 654 sc->sc_ext_callback_cnt--; 655 KASSERT(sc->sc_ext_callback_cnt >= 0); 656 } 657} 658 659static inline int 660cnmac_buf_free_work(struct cnmac_softc *sc, uint64_t *work) 661{ 662 663 /* XXX when jumbo frame */ 664 if (ISSET(work[2], PIP_WQE_WORD2_IP_BUFS)) { 665 paddr_t addr; 666 paddr_t start_buffer; 667 668 addr = work[3] & PIP_WQE_WORD3_ADDR; 669 start_buffer = addr & ~(2048 - 1); 670 671 octfpa_buf_put_paddr(cnmac_fb_pkt, start_buffer); 672 } 673 674 octfpa_buf_put(cnmac_fb_wqe, work); 675 676 return 0; 677} 678 679static inline void 680cnmac_buf_ext_free(struct mbuf *m, void *buf, size_t size, void *arg) 681{ 682 octfpa_buf_put(cnmac_fb_pkt, buf); 683 684 KASSERT(m != NULL); 685 686 pool_cache_put(mb_cache, m); 687} 688 689/* ---- ifnet interfaces */ 690 691static int 692cnmac_ioctl(struct ifnet *ifp, u_long cmd, void *data) 693{ 694 struct cnmac_softc *sc = ifp->if_softc; 695 struct ifreq *ifr = (struct ifreq *)data; 696 int s, error; 697 698 s = splnet(); 699 switch (cmd) { 700 case SIOCSIFMEDIA: 701 /* Flow control requires full-duplex mode. */ 702 if (IFM_SUBTYPE(ifr->ifr_media) == IFM_AUTO || 703 (ifr->ifr_media & IFM_FDX) == 0) { 704 ifr->ifr_media &= ~IFM_ETH_FMASK; 705 } 706 if (IFM_SUBTYPE(ifr->ifr_media) != IFM_AUTO) { 707 if ((ifr->ifr_media & IFM_ETH_FMASK) == IFM_FLOW) { 708 ifr->ifr_media |= 709 IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE; 710 } 711 sc->sc_gmx_port->sc_port_flowflags = 712 ifr->ifr_media & IFM_ETH_FMASK; 713 } 714 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 715 break; 716 default: 717 error = ether_ioctl(ifp, cmd, data); 718 break; 719 } 720 721 if (error == ENETRESET) { 722 if (ISSET(ifp->if_flags, IFF_RUNNING)) 723 octgmx_set_filter(sc->sc_gmx_port); 724 error = 0; 725 } 726 727 cnmac_start(ifp); 728 729 splx(s); 730 731 return error; 732} 733 734/* ---- send (output) */ 735 736static inline uint64_t 737cnmac_send_makecmd_w0(uint64_t fau0, uint64_t fau1, size_t len, int segs, 738 int ipoffp1) 739{ 740 741 return octpko_cmd_word0( 742 OCT_FAU_OP_SIZE_64, /* sz1 */ 743 OCT_FAU_OP_SIZE_64, /* sz0 */ 744 1, fau1, 1, fau0, /* s1, reg1, s0, reg0 */ 745 0, /* le */ 746 cnmac_param_pko_cmd_w0_n2, /* n2 */ 747 1, 0, /* q, r */ 748 (segs == 1) ? 0 : 1, /* g */ 749 0, 0, 1, /* ipoffp1, ii, df */ 750 segs, (int)len); /* segs, totalbytes */ 751} 752 753static inline uint64_t 754cnmac_send_makecmd_w1(int size, paddr_t addr) 755{ 756 757 return octpko_cmd_word1( 758 0, 0, /* i, back */ 759 OCTEON_POOL_NO_SG, /* pool */ 760 size, addr); /* size, addr */ 761} 762 763static inline int 764cnmac_send_makecmd_gbuf(struct cnmac_softc *sc, struct mbuf *m0, uint64_t *gbuf, 765 int *rsegs) 766{ 767 struct mbuf *m; 768 int segs = 0; 769 uintptr_t laddr, rlen, nlen; 770 771 for (m = m0; m != NULL; m = m->m_next) { 772 773 if (__predict_false(m->m_len == 0)) 774 continue; 775 776 /* Aligned 4k */ 777 laddr = (uintptr_t)m->m_data & (PAGE_SIZE - 1); 778 779 if (laddr + m->m_len > PAGE_SIZE) { 780 /* XXX XXX XXX */ 781 rlen = PAGE_SIZE - laddr; 782 nlen = m->m_len - rlen; 783 *(gbuf + segs) = cnmac_send_makecmd_w1(rlen, 784 kvtophys((vaddr_t)m->m_data)); 785 segs++; 786 if (segs > 63) { 787 return 1; 788 } 789 /* XXX XXX XXX */ 790 } else { 791 rlen = 0; 792 nlen = m->m_len; 793 } 794 795 *(gbuf + segs) = cnmac_send_makecmd_w1(nlen, 796 kvtophys((vaddr_t)(m->m_data + rlen))); 797 segs++; 798 if (segs > 63) { 799 return 1; 800 } 801 } 802 803 KASSERT(m == NULL); 804 805 *rsegs = segs; 806 807 return 0; 808} 809 810static inline int 811cnmac_send_makecmd(struct cnmac_softc *sc, struct mbuf *m, 812 uint64_t *gbuf, uint64_t *rpko_cmd_w0, uint64_t *rpko_cmd_w1) 813{ 814 uint64_t pko_cmd_w0, pko_cmd_w1; 815 int ipoffp1; 816 int segs; 817 int result = 0; 818 819 if (cnmac_send_makecmd_gbuf(sc, m, gbuf, &segs)) { 820 log(LOG_WARNING, "%s: there are a lot of number of segments" 821 " of transmission data", device_xname(sc->sc_dev)); 822 result = 1; 823 goto done; 824 } 825 826 /* Get the IP packet offset for TCP/UDP checksum offloading. */ 827 ipoffp1 = (m->m_pkthdr.csum_flags & (M_CSUM_TCPv4 | M_CSUM_UDPv4)) 828 ? (ETHER_HDR_LEN + 1) : 0; 829 830 /* 831 * segs == 1 -> link mode (single continuous buffer) 832 * WORD1[size] is number of bytes pointed by segment 833 * 834 * segs > 1 -> gather mode (scatter-gather buffer) 835 * WORD1[size] is number of segments 836 */ 837 pko_cmd_w0 = cnmac_send_makecmd_w0(sc->sc_fau_done.fd_regno, 838 0, m->m_pkthdr.len, segs, ipoffp1); 839 if (segs == 1) { 840 pko_cmd_w1 = cnmac_send_makecmd_w1( 841 m->m_pkthdr.len, kvtophys((vaddr_t)m->m_data)); 842 } else { 843#ifdef __mips_n32 844 KASSERT(MIPS_KSEG0_P(gbuf)); 845 pko_cmd_w1 = cnmac_send_makecmd_w1(segs, 846 MIPS_KSEG0_TO_PHYS(gbuf)); 847#else 848 pko_cmd_w1 = cnmac_send_makecmd_w1(segs, 849 MIPS_XKPHYS_TO_PHYS(gbuf)); 850#endif 851 } 852 853 *rpko_cmd_w0 = pko_cmd_w0; 854 *rpko_cmd_w1 = pko_cmd_w1; 855 856done: 857 return result; 858} 859 860static inline int 861cnmac_send_cmd(struct cnmac_softc *sc, uint64_t pko_cmd_w0, 862 uint64_t pko_cmd_w1, int *pwdc) 863{ 864 uint64_t *cmdptr; 865 int result = 0; 866 867#ifdef __mips_n32 868 KASSERT((sc->sc_cmdptr.cmdptr & ~MIPS_PHYS_MASK) == 0); 869 cmdptr = (uint64_t *)MIPS_PHYS_TO_KSEG0(sc->sc_cmdptr.cmdptr); 870#else 871 cmdptr = (uint64_t *)MIPS_PHYS_TO_XKPHYS_CACHED(sc->sc_cmdptr.cmdptr); 872#endif 873 cmdptr += sc->sc_cmdptr.cmdptr_idx; 874 875 KASSERT(cmdptr != NULL); 876 877 *cmdptr++ = pko_cmd_w0; 878 *cmdptr++ = pko_cmd_w1; 879 880 KASSERT(sc->sc_cmdptr.cmdptr_idx + 2 <= FPA_COMMAND_BUFFER_POOL_NWORDS - 1); 881 882 if (sc->sc_cmdptr.cmdptr_idx + 2 == FPA_COMMAND_BUFFER_POOL_NWORDS - 1) { 883 paddr_t buf; 884 885 buf = octfpa_buf_get_paddr(cnmac_fb_cmd); 886 if (buf == 0) { 887 log(LOG_WARNING, 888 "%s: can not allocate command buffer from free pool allocator\n", 889 device_xname(sc->sc_dev)); 890 result = 1; 891 goto done; 892 } 893 *cmdptr++ = buf; 894 sc->sc_cmdptr.cmdptr = (uint64_t)buf; 895 sc->sc_cmdptr.cmdptr_idx = 0; 896 } else { 897 sc->sc_cmdptr.cmdptr_idx += 2; 898 } 899 900 *pwdc += 2; 901 902done: 903 return result; 904} 905 906static inline int 907cnmac_send_buf(struct cnmac_softc *sc, struct mbuf *m, uint64_t *gbuf, 908 int *pwdc) 909{ 910 int result = 0, error; 911 uint64_t pko_cmd_w0, pko_cmd_w1; 912 913 error = cnmac_send_makecmd(sc, m, gbuf, &pko_cmd_w0, &pko_cmd_w1); 914 if (error != 0) { 915 /* Already logging */ 916 result = error; 917 goto done; 918 } 919 920 error = cnmac_send_cmd(sc, pko_cmd_w0, pko_cmd_w1, pwdc); 921 if (error != 0) { 922 /* Already logging */ 923 result = error; 924 } 925 926done: 927 return result; 928} 929 930static inline int 931cnmac_send(struct cnmac_softc *sc, struct mbuf *m, int *pwdc) 932{ 933 paddr_t gaddr = 0; 934 uint64_t *gbuf = NULL; 935 int result = 0, error; 936 937 gaddr = octfpa_buf_get_paddr(cnmac_fb_sg); 938 if (gaddr == 0) { 939 log(LOG_WARNING, "%s: can not allocate gather buffer from " 940 "free pool allocator\n", device_xname(sc->sc_dev)); 941 result = 1; 942 goto done; 943 } 944 945#ifdef __mips_n32 946 KASSERT((gaddr & ~MIPS_PHYS_MASK) == 0); 947 gbuf = (uint64_t *)(uintptr_t)MIPS_PHYS_TO_KSEG0(gaddr); 948#else 949 gbuf = (uint64_t *)(uintptr_t)MIPS_PHYS_TO_XKPHYS_CACHED(gaddr); 950#endif 951 952 KASSERT(gbuf != NULL); 953 954 error = cnmac_send_buf(sc, m, gbuf, pwdc); 955 if (error != 0) { 956 /* Already logging */ 957 octfpa_buf_put_paddr(cnmac_fb_sg, gaddr); 958 result = error; 959 goto done; 960 } 961 962 cnmac_send_queue_add(sc, m, gbuf); 963 964done: 965 return result; 966} 967 968static void 969cnmac_start(struct ifnet *ifp) 970{ 971 struct cnmac_softc *sc = ifp->if_softc; 972 struct mbuf *m; 973 int wdc = 0; 974 975 /* 976 * Performance tuning 977 * pre-send iobdma request 978 */ 979 cnmac_send_queue_flush_prefetch(sc); 980 981 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 982 goto last; 983 984 if (__predict_false(!octgmx_link_status(sc->sc_gmx_port))) 985 goto last; 986 987 for (;;) { 988 IFQ_POLL(&ifp->if_snd, m); 989 if (__predict_false(m == NULL)) 990 break; 991 992 /* XXX XXX XXX */ 993 cnmac_send_queue_flush_fetch(sc); 994 995 /* 996 * If no free send buffer is available, free all the sent 997 * buffers and bail out. 998 */ 999 if (cnmac_send_queue_is_full(sc)) { 1000 SET(ifp->if_flags, IFF_OACTIVE); 1001 if (wdc > 0) 1002 octpko_op_doorbell_write(sc->sc_port, 1003 sc->sc_port, wdc); 1004 callout_schedule(&sc->sc_tick_free_ch, 1); 1005 return; 1006 } 1007 /* XXX XXX XXX */ 1008 1009 IFQ_DEQUEUE(&ifp->if_snd, m); 1010 1011 bpf_mtap(ifp, m, BPF_D_OUT); 1012 1013 /* XXX XXX XXX */ 1014 if (sc->sc_soft_req_cnt > sc->sc_soft_req_thresh) 1015 cnmac_send_queue_flush(sc); 1016 if (cnmac_send(sc, m, &wdc)) { 1017 IF_DROP(&ifp->if_snd); 1018 m_freem(m); 1019 log(LOG_WARNING, 1020 "%s: failed in the transmission of the packet\n", 1021 device_xname(sc->sc_dev)); 1022 } else 1023 sc->sc_soft_req_cnt++; 1024 1025 if (sc->sc_flush) 1026 cnmac_send_queue_flush_sync(sc); 1027 /* XXX XXX XXX */ 1028 1029 /* Send next iobdma request */ 1030 cnmac_send_queue_flush_prefetch(sc); 1031 } 1032 1033 if (wdc > 0) 1034 octpko_op_doorbell_write(sc->sc_port, sc->sc_port, wdc); 1035 1036last: 1037 cnmac_send_queue_flush_fetch(sc); 1038 callout_schedule(&sc->sc_tick_free_ch, 1); 1039} 1040 1041static void 1042cnmac_watchdog(struct ifnet *ifp) 1043{ 1044 struct cnmac_softc *sc = ifp->if_softc; 1045 1046 printf("%s: device timeout\n", device_xname(sc->sc_dev)); 1047 1048 cnmac_configure(sc); 1049 1050 SET(ifp->if_flags, IFF_RUNNING); 1051 CLR(ifp->if_flags, IFF_OACTIVE); 1052 ifp->if_timer = 0; 1053 1054 cnmac_start(ifp); 1055} 1056 1057static int 1058cnmac_init(struct ifnet *ifp) 1059{ 1060 struct cnmac_softc *sc = ifp->if_softc; 1061 1062 /* XXX don't disable commonly used parts!!! XXX */ 1063 if (sc->sc_init_flag == 0) { 1064 /* Cancel any pending I/O. */ 1065 cnmac_stop(ifp, 0); 1066 1067 /* Initialize the device */ 1068 cnmac_configure(sc); 1069 1070 octpko_enable(sc->sc_pko); 1071 octipd_enable(sc->sc_ipd); 1072 1073 sc->sc_init_flag = 1; 1074 } else { 1075 octgmx_port_enable(sc->sc_gmx_port, 1); 1076 } 1077 mii_ifmedia_change(&sc->sc_mii); 1078 1079 octgmx_set_filter(sc->sc_gmx_port); 1080 1081 callout_schedule(&sc->sc_tick_misc_ch, hz); 1082 callout_schedule(&sc->sc_tick_free_ch, hz); 1083 1084 SET(ifp->if_flags, IFF_RUNNING); 1085 CLR(ifp->if_flags, IFF_OACTIVE); 1086 1087 return 0; 1088} 1089 1090static void 1091cnmac_stop(struct ifnet *ifp, int disable) 1092{ 1093 struct cnmac_softc *sc = ifp->if_softc; 1094 1095 callout_stop(&sc->sc_tick_misc_ch); 1096 callout_stop(&sc->sc_tick_free_ch); 1097 1098 mii_down(&sc->sc_mii); 1099 1100 octgmx_port_enable(sc->sc_gmx_port, 0); 1101 1102 /* Mark the interface as down and cancel the watchdog timer. */ 1103 CLR(ifp->if_flags, IFF_RUNNING | IFF_OACTIVE); 1104 ifp->if_timer = 0; 1105} 1106 1107/* ---- misc */ 1108 1109static int 1110cnmac_reset(struct cnmac_softc *sc) 1111{ 1112 octgmx_reset_speed(sc->sc_gmx_port); 1113 octgmx_reset_flowctl(sc->sc_gmx_port); 1114 octgmx_reset_timing(sc->sc_gmx_port); 1115 1116 return 0; 1117} 1118 1119static int 1120cnmac_configure(struct cnmac_softc *sc) 1121{ 1122 octgmx_port_enable(sc->sc_gmx_port, 0); 1123 1124 cnmac_reset(sc); 1125 1126 cnmac_configure_common(sc); 1127 1128 octpko_port_config(sc->sc_pko); 1129 octpko_port_enable(sc->sc_pko, 1); 1130 octpow_config(sc->sc_pow, sc->sc_powgroup); 1131 1132 octgmx_tx_stats_rd_clr(sc->sc_gmx_port, 1); 1133 octgmx_rx_stats_rd_clr(sc->sc_gmx_port, 1); 1134 1135 octgmx_port_enable(sc->sc_gmx_port, 1); 1136 1137 return 0; 1138} 1139 1140static int 1141cnmac_configure_common(struct cnmac_softc *sc) 1142{ 1143 static int once; 1144 1145 if (once == 1) 1146 return 0; 1147 once = 1; 1148 1149 octipd_config(sc->sc_ipd); 1150 octpko_config(sc->sc_pko); 1151 1152 return 0; 1153} 1154 1155/* ---- receive (input) */ 1156 1157static inline int 1158cnmac_recv_mbuf(struct cnmac_softc *sc, uint64_t *work, struct mbuf **rm) 1159{ 1160 struct mbuf *m; 1161 vaddr_t addr; 1162 vaddr_t ext_buf; 1163 size_t ext_size; 1164 uint64_t word1 = work[1]; 1165 uint64_t word2 = work[2]; 1166 uint64_t word3 = work[3]; 1167 1168 MGETHDR(m, M_NOWAIT, MT_DATA); 1169 if (m == NULL) 1170 return 1; 1171 1172 octfpa_buf_put(cnmac_fb_wqe, work); 1173 1174 if (__SHIFTOUT(word2, PIP_WQE_WORD2_IP_BUFS) != 1) 1175 panic("%s: expected one buffer, got %" PRId64, __func__, 1176 __SHIFTOUT(word2, PIP_WQE_WORD2_IP_BUFS)); 1177 1178 1179#ifdef __mips_n32 1180 KASSERT((word3 & ~MIPS_PHYS_MASK) == 0); 1181 addr = MIPS_PHYS_TO_KSEG0(word3 & PIP_WQE_WORD3_ADDR); 1182#else 1183 addr = MIPS_PHYS_TO_XKPHYS_CACHED(word3 & PIP_WQE_WORD3_ADDR); 1184#endif 1185 1186 ext_size = OCTEON_POOL_SIZE_PKT; 1187 ext_buf = addr & ~(ext_size - 1); 1188 MEXTADD(m, ext_buf, ext_size, 0, cnmac_buf_ext_free, NULL); 1189 1190 m->m_data = (void *)addr; 1191 m->m_len = m->m_pkthdr.len = (word1 & PIP_WQE_WORD1_LEN) >> 48; 1192 m_set_rcvif(m, &sc->sc_ethercom.ec_if); 1193 1194 /* Not readonly buffer */ 1195 m->m_flags |= M_EXT_RW; 1196 1197 *rm = m; 1198 1199 KASSERT(*rm != NULL); 1200 1201 return 0; 1202} 1203 1204static inline int 1205cnmac_recv_check(struct cnmac_softc *sc, uint64_t word2) 1206{ 1207 static struct timeval rxerr_log_interval = { 0, 2500000 }; 1208 uint64_t opecode; 1209 1210 if (__predict_true(!ISSET(word2, PIP_WQE_WORD2_NOIP_RE))) 1211 return 0; 1212 1213 opecode = word2 & PIP_WQE_WORD2_NOIP_OPECODE; 1214 if ((sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) && 1215 ratecheck(&sc->sc_rxerr_log_last, &rxerr_log_interval)) 1216 log(LOG_DEBUG, "%s: rx error (%"PRId64")\n", 1217 device_xname(sc->sc_dev), opecode); 1218 1219 /* This error is harmless */ 1220 if (opecode == PIP_WQE_WORD2_RE_OPCODE_OVRRUN) 1221 return 0; 1222 1223 return 1; 1224} 1225 1226static inline int 1227cnmac_recv(struct cnmac_softc *sc, uint64_t *work) 1228{ 1229 struct ifnet *ifp; 1230 struct mbuf *m; 1231 uint64_t word2; 1232 1233 KASSERT(sc != NULL); 1234 KASSERT(work != NULL); 1235 1236 word2 = work[2]; 1237 ifp = &sc->sc_ethercom.ec_if; 1238 1239 KASSERT(ifp != NULL); 1240 1241 if (!ISSET(ifp->if_flags, IFF_RUNNING)) 1242 goto drop; 1243 1244 if (__predict_false(cnmac_recv_check(sc, word2) != 0)) { 1245 if_statinc(ifp, if_ierrors); 1246 goto drop; 1247 } 1248 1249 if (__predict_false(cnmac_recv_mbuf(sc, work, &m) != 0)) { 1250 if_statinc(ifp, if_ierrors); 1251 goto drop; 1252 } 1253 1254 /* work[0] .. work[3] may not be valid any more */ 1255 1256 KASSERT(m != NULL); 1257 1258 octipd_offload(word2, m->m_data, &m->m_pkthdr.csum_flags); 1259 1260 if_percpuq_enqueue(ifp->if_percpuq, m); 1261 1262 return 0; 1263 1264drop: 1265 cnmac_buf_free_work(sc, work); 1266 return 1; 1267} 1268 1269static int 1270cnmac_intr(void *arg) 1271{ 1272 struct cnmac_softc *sc = arg; 1273 uint64_t *work; 1274 uint64_t wqmask = __BIT(sc->sc_powgroup); 1275 uint32_t coreid = 0; /* XXX octeon_get_coreid() */ 1276 uint32_t port; 1277 1278 _POW_WR8(sc->sc_pow, POW_PP_GRP_MSK_OFFSET(coreid), wqmask); 1279 1280 octpow_tag_sw_wait(); 1281 octpow_work_request_async(OCTEON_CVMSEG_OFFSET(csm_pow_intr), 1282 POW_NO_WAIT); 1283 1284 for (;;) { 1285 work = (uint64_t *)octpow_work_response_async( 1286 OCTEON_CVMSEG_OFFSET(csm_pow_intr)); 1287 if (work == NULL) 1288 break; 1289 1290 octpow_tag_sw_wait(); 1291 octpow_work_request_async(OCTEON_CVMSEG_OFFSET(csm_pow_intr), 1292 POW_NO_WAIT); 1293 1294 port = __SHIFTOUT(work[1], PIP_WQE_WORD1_IPRT); 1295 if (port != sc->sc_port) { 1296 printf("%s: unexpected wqe port %u, should be %u\n", 1297 device_xname(sc->sc_dev), port, sc->sc_port); 1298 goto wqe_error; 1299 } 1300 1301 (void)cnmac_recv(sc, work); 1302 } 1303 1304 _POW_WR8(sc->sc_pow, POW_WQ_INT_OFFSET, wqmask); 1305 1306 return 1; 1307 1308wqe_error: 1309 printf("word0: 0x%016" PRIx64 "\n", work[0]); 1310 printf("word1: 0x%016" PRIx64 "\n", work[1]); 1311 printf("word2: 0x%016" PRIx64 "\n", work[2]); 1312 printf("word3: 0x%016" PRIx64 "\n", work[3]); 1313 panic("wqe_error"); 1314} 1315 1316/* ---- tick */ 1317 1318/* 1319 * cnmac_tick_free 1320 * 1321 * => garbage collect send gather buffer / mbuf 1322 * => called at softclock 1323 */ 1324static void 1325cnmac_tick_free(void *arg) 1326{ 1327 struct cnmac_softc *sc = arg; 1328 int timo; 1329 int s; 1330 1331 s = splnet(); 1332 /* XXX XXX XXX */ 1333 if (sc->sc_soft_req_cnt > 0) { 1334 cnmac_send_queue_flush_prefetch(sc); 1335 cnmac_send_queue_flush_fetch(sc); 1336 cnmac_send_queue_flush(sc); 1337 cnmac_send_queue_flush_sync(sc); 1338 } 1339 /* XXX XXX XXX */ 1340 1341 timo = (sc->sc_ext_callback_cnt > 0) ? 1 : hz; 1342 callout_schedule(&sc->sc_tick_free_ch, timo); 1343 splx(s); 1344} 1345 1346/* 1347 * cnmac_tick_misc 1348 * 1349 * => collect statistics 1350 * => check link status 1351 * => called at softclock 1352 */ 1353static void 1354cnmac_tick_misc(void *arg) 1355{ 1356 struct cnmac_softc *sc = arg; 1357 struct ifnet *ifp; 1358 int s; 1359 1360 s = splnet(); 1361 1362 ifp = &sc->sc_ethercom.ec_if; 1363 1364 octgmx_stats(sc->sc_gmx_port); 1365 octpip_stats(sc->sc_pip, ifp, sc->sc_port); 1366 mii_tick(&sc->sc_mii); 1367 1368 splx(s); 1369 1370 callout_schedule(&sc->sc_tick_misc_ch, hz); 1371} 1372