Annotation of sys/arch/mvme88k/dev/if_ie.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_ie.c,v 1.41 2006/05/08 14:36:10 miod Exp $ */
! 2:
! 3: /*-
! 4: * Copyright (c) 1998 Steve Murphree, Jr.
! 5: * Copyright (c) 1995 Theo de Raadt
! 6: * Copyright (c) 1993, 1994, 1995 Charles Hannum.
! 7: * Copyright (c) 1992, 1993, University of Vermont and State
! 8: * Agricultural College.
! 9: * Copyright (c) 1992, 1993, Garrett A. Wollman.
! 10: *
! 11: * Portions:
! 12: * Copyright (c) 1994, 1995, Rafal K. Boni
! 13: * Copyright (c) 1990, 1991, William F. Jolitz
! 14: * Copyright (c) 1990, The Regents of the University of California
! 15: *
! 16: * All rights reserved.
! 17: *
! 18: * Redistribution and use in source and binary forms, with or without
! 19: * modification, are permitted provided that the following conditions
! 20: * are met:
! 21: * 1. Redistributions of source code must retain the above copyright
! 22: * notice, this list of conditions and the following disclaimer.
! 23: * 2. Redistributions in binary form must reproduce the above copyright
! 24: * notice, this list of conditions and the following disclaimer in the
! 25: * documentation and/or other materials provided with the distribution.
! 26: * 3. All advertising materials mentioning features or use of this software
! 27: * must display the following acknowledgement:
! 28: * This product includes software developed by Charles Hannum, by the
! 29: * University of Vermont and State Agricultural College and Garrett A.
! 30: * Wollman, by William F. Jolitz, and by the University of California,
! 31: * Berkeley, Lawrence Berkeley Laboratory, and its contributors.
! 32: * 4. Neither the names of the Universities nor the names of the authors
! 33: * may be used to endorse or promote products derived from this software
! 34: * without specific prior written permission.
! 35: *
! 36: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 37: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 38: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 39: * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE
! 40: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 41: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 42: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 43: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 44: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 45: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 46: * SUCH DAMAGE.
! 47: */
! 48:
! 49: /*
! 50: * Intel 82596 Ethernet chip
! 51: * Register, bit, and structure definitions.
! 52: *
! 53: * Original StarLAN driver written by Garrett Wollman with reference to the
! 54: * Clarkson Packet Driver code for this chip written by Russ Nelson and others.
! 55: *
! 56: * BPF support code taken from hpdev/if_le.c, supplied with tcpdump.
! 57: *
! 58: * 3C507 support is loosely based on code donated to NetBSD by Rafal Boni.
! 59: *
! 60: * Majorly cleaned up and 3C507 code merged by Charles Hannum.
! 61: *
! 62: * Converted to SUN ie driver by Charles D. Cranor,
! 63: * October 1994, January 1995.
! 64: * This sun version based on i386 version 1.30.
! 65: */
! 66:
! 67: extern void *etherbuf;
! 68: extern int etherlen;
! 69:
! 70: /*
! 71: Mode of operation:
! 72:
! 73: We run the 82596 in a standard Ethernet mode. We keep NFRAMES
! 74: received frame descriptors around for the receiver to use, and
! 75: NRXBUF associated receive buffer descriptors, both in a circular
! 76: list. Whenever a frame is received, we rotate both lists as
! 77: necessary. (The 596 treats both lists as a simple queue.) We also
! 78: keep a transmit command around so that packets can be sent off
! 79: quickly.
! 80:
! 81: We configure the adapter in AL-LOC = 1 mode, which means that the
! 82: Ethernet/802.3 MAC header is placed at the beginning of the receive
! 83: buffer rather than being split off into various fields in the RFD.
! 84: This also means that we must include this header in the transmit
! 85: buffer as well.
! 86:
! 87: By convention, all transmit commands, and only transmit commands,
! 88: shall have the I (IE_CMD_INTR) bit set in the command. This way,
! 89: when an interrupt arrives at ieintr(), it is immediately possible
! 90: to tell what precisely caused it. ANY OTHER command-sending
! 91: routines should run at splnet(), and should post an acknowledgement
! 92: to every interrupt they generate.
! 93:
! 94: */
! 95:
! 96: #include "bpfilter.h"
! 97:
! 98: #include <sys/param.h>
! 99: #include <sys/systm.h>
! 100: #include <sys/mbuf.h>
! 101: #include <sys/buf.h>
! 102: #include <sys/protosw.h>
! 103: #include <sys/socket.h>
! 104: #include <sys/ioctl.h>
! 105: #include <sys/errno.h>
! 106: #include <sys/syslog.h>
! 107: #include <sys/device.h>
! 108:
! 109: #include <net/if.h>
! 110: #include <net/if_types.h>
! 111: #include <net/if_dl.h>
! 112: #include <net/route.h>
! 113:
! 114: #if NBPFILTER > 0
! 115: #include <net/bpf.h>
! 116: #include <net/bpfdesc.h>
! 117: #endif
! 118:
! 119: #ifdef INET
! 120: #include <netinet/in.h>
! 121: #include <netinet/in_systm.h>
! 122: #include <netinet/in_var.h>
! 123: #include <netinet/ip.h>
! 124: #include <netinet/if_ether.h>
! 125: #endif
! 126:
! 127: #include <uvm/uvm_extern.h>
! 128:
! 129: #include <machine/bus.h>
! 130: #include <machine/autoconf.h>
! 131: #include <machine/cpu.h>
! 132: #include <machine/pmap.h>
! 133:
! 134: #include <mvme88k/dev/if_ie.h>
! 135: #include <mvme88k/dev/i82596.h>
! 136: #include <mvme88k/dev/pcctworeg.h>
! 137: #include <mvme88k/dev/pcctwovar.h>
! 138:
! 139: static struct mbuf *last_not_for_us;
! 140:
! 141: #define IED_RINT 0x01
! 142: #define IED_TINT 0x02
! 143: #define IED_RNR 0x04
! 144: #define IED_CNA 0x08
! 145: #define IED_READFRAME 0x10
! 146: #define IED_ALL 0x1f
! 147:
! 148: #define ETHER_MIN_LEN 64
! 149: #define ETHER_MAX_LEN 1518
! 150: #define ETHER_ADDR_LEN 6
! 151:
! 152: #define B_PER_F 3 /* recv buffers per frame */
! 153: #define MXFRAMES 300 /* max number of recv frames */
! 154: #define MXRXBUF (MXFRAMES*B_PER_F) /* number of buffers to allocate */
! 155: #define IE_RBUF_SIZE 256 /* size of each receive buffer;
! 156: MUST BE POWER OF TWO */
! 157: #define NTXBUF 2 /* number of transmit commands */
! 158: #define IE_TBUF_SIZE ETHER_MAX_LEN /* length of transmit buffer */
! 159:
! 160: struct ie_softc {
! 161: struct device sc_dev; /* device structure */
! 162: struct intrhand sc_ih, sc_failih; /* interrupt info */
! 163: char sc_failintrname[16 + 4];
! 164:
! 165: caddr_t sc_iobase; /* KVA of base of 24 bit addr space */
! 166: caddr_t sc_maddr; /* KVA of base of chip's RAM (16bit addr sp.)*/
! 167: u_int sc_msize; /* how much RAM we have/use */
! 168: caddr_t sc_reg; /* KVA of car's register */
! 169: int sc_bustype;
! 170:
! 171: struct arpcom sc_arpcom;/* system arpcom structure */
! 172:
! 173: void (*reset_596)(struct ie_softc *);
! 174: /* card dependent reset function */
! 175: void (*chan_attn)(struct ie_softc *);
! 176: /* card dependent attn function */
! 177: void (*run_596)(struct ie_softc *);
! 178: /* card depenent "go on-line" function */
! 179: void (*memcopy)(const void *, void *, size_t);
! 180: /* card dependent memory copy function */
! 181: void (*memzero)(void *, size_t);
! 182: /* card dependent memory zero function */
! 183: int want_mcsetup; /* mcsetup flag */
! 184: int promisc; /* are we in promisc mode? */
! 185:
! 186: /*
! 187: * pointers to the 3 major control structures
! 188: */
! 189:
! 190: struct ie_sys_conf_ptr *volatile scp;
! 191: struct ie_int_sys_conf_ptr *volatile iscp;
! 192: struct ie_sys_ctl_block *volatile scb;
! 193:
! 194: /*
! 195: * pointer and size of a block of KVA where the buffers
! 196: * are to be allocated from
! 197: */
! 198:
! 199: caddr_t buf_area;
! 200: int buf_area_sz;
! 201:
! 202: /*
! 203: * the actual buffers (recv and xmit)
! 204: */
! 205:
! 206: struct ie_recv_frame_desc *volatile rframes[MXFRAMES];
! 207: struct ie_recv_buf_desc *volatile rbuffs[MXRXBUF];
! 208: char *volatile cbuffs[MXRXBUF];
! 209: int rfhead, rftail, rbhead, rbtail;
! 210:
! 211: struct ie_xmit_cmd *volatile xmit_cmds[NTXBUF];
! 212: struct ie_xmit_buf *volatile xmit_buffs[NTXBUF];
! 213: u_char *xmit_cbuffs[NTXBUF];
! 214: int xmit_busy;
! 215: int xmit_free;
! 216: int xchead, xctail;
! 217:
! 218: struct ie_en_addr mcast_addrs[MAXMCAST + 1];
! 219: int mcast_count;
! 220:
! 221: int nframes; /* number of frames in use */
! 222: int nrxbuf; /* number of recv buffs in use */
! 223:
! 224: #ifdef IEDEBUG
! 225: int sc_debug;
! 226: #endif
! 227: struct pcctwosoftc *sc_pcctwo;
! 228: };
! 229:
! 230: void ie_obreset(struct ie_softc *);
! 231: void ie_obattend(struct ie_softc *);
! 232: void ie_obrun(struct ie_softc *);
! 233: int ie_setupram(struct ie_softc *sc);
! 234:
! 235: void iewatchdog(struct ifnet *);
! 236: int ieintr(void *);
! 237: int iefailintr(void *);
! 238: int ieinit(struct ie_softc *);
! 239: int ieioctl(struct ifnet *, u_long, caddr_t);
! 240: void iestart(struct ifnet *);
! 241: void iereset(struct ie_softc *);
! 242: void ie_readframe(struct ie_softc *, int);
! 243: void ie_drop_packet_buffer(struct ie_softc *);
! 244: int command_and_wait(struct ie_softc *, int,
! 245: void *volatile, int);
! 246: void ierint(struct ie_softc *);
! 247: void ietint(struct ie_softc *);
! 248: int ieget(struct ie_softc *, struct mbuf **,
! 249: struct ether_header *, int *);
! 250: void setup_bufs(struct ie_softc *);
! 251: int mc_setup(struct ie_softc *, void *);
! 252: void mc_reset(struct ie_softc *);
! 253: static __inline int ether_equal(u_char *, u_char *);
! 254: static __inline void ie_ack(struct ie_softc *, u_int);
! 255: static __inline void ie_setup_config(struct ie_config_cmd *volatile,
! 256: int, int);
! 257: static __inline int check_eh(struct ie_softc *, struct ether_header *,
! 258: int *);
! 259: static __inline int ie_buflen(struct ie_softc *, int);
! 260: static __inline int ie_packet_len(struct ie_softc *);
! 261: static __inline void iexmit(struct ie_softc *);
! 262: static __inline caddr_t Align(caddr_t);
! 263:
! 264: void chan_attn_timeout(void *);
! 265: void run_tdr(struct ie_softc *, struct ie_tdr_cmd *);
! 266: void iestop(struct ie_softc *);
! 267:
! 268: #ifdef IEDEBUG
! 269: void print_rbd(struct ie_recv_buf_desc *volatile);
! 270:
! 271: int in_ierint = 0;
! 272: int in_ietint = 0;
! 273: #endif
! 274:
! 275: int iematch(struct device *, void *, void *);
! 276: void ieattach(struct device *, struct device *, void *);
! 277:
! 278: struct cfattach ie_ca = {
! 279: sizeof(struct ie_softc), iematch, ieattach
! 280: };
! 281:
! 282: struct cfdriver ie_cd = {
! 283: NULL, "ie", DV_IFNET
! 284: };
! 285:
! 286: /*
! 287: * address generation macros
! 288: */
! 289: /* Make 32 bit value from swapped data (err counters access) */
! 290: #define MK_32(ptr) ((((u_int)(ptr) >> 16) & 0xffff) | ((u_int)(ptr) << 16))
! 291:
! 292: #define MKADR_32(ptr) \
! 293: ((caddr_t)((((u_int)(ptr) >> 16) & 0xffff) | \
! 294: (((u_int)(ptr) << 16)) + UNCACHED_MEMORY_ADDR))
! 295:
! 296: /* *NOTE* The next macros also converts to physical address! */
! 297: #define ASWAP(ptr) ((((u_int)(ptr) >> 16) & 0x1fff) | ((u_int)(ptr) << 16))
! 298:
! 299: #define SWT_32(to, from) { \
! 300: u_int *t = (u_int *)&to; \
! 301: *t = ((((u_int)from >> 16) & 0x1fff) | ((u_int)from << 16)); \
! 302: }
! 303: /*
! 304: * Here are a few useful functions. We could have done these as macros, but
! 305: * since we have the inline facility, it makes sense to use that instead.
! 306: */
! 307: static inline void
! 308: ie_setup_config(cmd, promiscuous, manchester)
! 309: struct ie_config_cmd *volatile cmd;
! 310: int promiscuous, manchester;
! 311: {
! 312:
! 313: cmd->ie_config_count = 0x0e;
! 314: cmd->ie_fifo = 0xc8;
! 315: cmd->ie_save_bad = 0x40;
! 316: cmd->ie_addr_len = 0x2e;
! 317: cmd->ie_priority = 0;
! 318: cmd->ie_ifs = 0x60;
! 319: cmd->ie_slot_low = 0;
! 320: cmd->ie_slot_high = 0xf2;
! 321: cmd->ie_promisc = !!promiscuous | manchester << 2;
! 322: cmd->ie_crs_cdt = 0;
! 323: cmd->ie_min_len = 64;
! 324: cmd->ie_junk = 0xff;
! 325: cmd->ie_dplx = 0x00;
! 326: cmd->ie_miabf = 0x3f;
! 327: }
! 328:
! 329: static inline void
! 330: ie_ack(sc, mask)
! 331: struct ie_softc *sc;
! 332: u_int mask;
! 333: {
! 334: struct ie_sys_ctl_block *volatile scb = sc->scb;
! 335:
! 336: command_and_wait(sc, scb->ie_status & mask, 0, 0);
! 337: }
! 338:
! 339: int
! 340: iematch(parent, vcf, args)
! 341: struct device *parent;
! 342: void *vcf, *args;
! 343: {
! 344: struct confargs *ca = args;
! 345:
! 346: if (badaddr(ca->ca_paddr, 1)) {
! 347: return(0);
! 348: }
! 349:
! 350: return(1);
! 351: }
! 352:
! 353: /*
! 354: * Deep Magic: reset it, then set SCP address again. Pray.
! 355: */
! 356: void
! 357: ie_obreset(sc)
! 358: struct ie_softc *sc;
! 359: {
! 360: struct ieob *volatile ieo = (struct ieob *) sc->sc_reg;
! 361: volatile int t;
! 362: u_long a;
! 363:
! 364: a = IE_PORT_RESET;
! 365: ieo->porthigh = a & 0xffff;
! 366: t = 0; t = 1;
! 367: ieo->portlow = a >> 16;
! 368: delay(1000);
! 369:
! 370: pmap_extract(pmap_kernel(), (vaddr_t)sc->scp, &a);
! 371: a |= IE_PORT_NEWSCPADDR;
! 372: ieo->porthigh = a & 0xffff;
! 373: t = 0; t = 1;
! 374: ieo->portlow = a >> 16;
! 375: delay(1000);
! 376: }
! 377:
! 378: void
! 379: ie_obattend(sc)
! 380: struct ie_softc *sc;
! 381: {
! 382: struct ieob *volatile ieo = (struct ieob *) sc->sc_reg;
! 383:
! 384: ieo->attn = 1;
! 385: }
! 386:
! 387: void
! 388: ie_obrun(sc)
! 389: struct ie_softc *sc;
! 390: {
! 391: }
! 392:
! 393: void
! 394: ieattach(parent, self, aux)
! 395: struct device *parent, *self;
! 396: void *aux;
! 397: {
! 398: struct ie_softc *sc = (void *) self;
! 399: struct confargs *ca = aux;
! 400: struct ifnet *ifp = &sc->sc_arpcom.ac_if;
! 401: extern void myetheraddr(u_char *); /* should be elsewhere */
! 402: struct ieob *volatile ieo;
! 403: paddr_t pa;
! 404:
! 405: sc->sc_pcctwo = (struct pcctwosoftc *)parent;
! 406: sc->reset_596 = ie_obreset;
! 407: sc->chan_attn = ie_obattend;
! 408: sc->run_596 = ie_obrun;
! 409: sc->memcopy = bcopy;
! 410: sc->memzero = bzero;
! 411: sc->sc_msize = etherlen;
! 412: sc->sc_reg = (void *)ca->ca_paddr;
! 413: ieo = (struct ieob *volatile) sc->sc_reg;
! 414:
! 415: /* get the first available etherbuf */
! 416: sc->sc_maddr = etherbuf; /* maddr = vaddr */
! 417: if (sc->sc_maddr == NULL) {
! 418: printf(": too many ethernet boards\n");
! 419: return;
! 420: } else
! 421: etherbuf = NULL; /* XXX */
! 422:
! 423: if (pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_maddr, &pa) == FALSE) {
! 424: printf(": pmap_extract() failed!\n");
! 425: return;
! 426: }
! 427: sc->sc_iobase = (caddr_t)pa; /* iobase = paddr (24 bit) */
! 428:
! 429: (sc->memzero)(sc->sc_maddr, sc->sc_msize);
! 430: sc->iscp = (struct ie_int_sys_conf_ptr *volatile)
! 431: sc->sc_maddr; /* @@ location zero */
! 432: sc->scb = (struct ie_sys_ctl_block *volatile)
! 433: roundup((int)sc->iscp + sizeof(struct ie_int_sys_conf_ptr), 16);
! 434: sc->scp = (struct ie_sys_conf_ptr *)
! 435: roundup((int)sc->scb + sizeof(struct ie_sys_ctl_block), 16);
! 436:
! 437: sc->scp->ie_bus_use = 0x44;
! 438: pmap_extract(pmap_kernel(), (vaddr_t)sc->iscp, &pa);
! 439: SWT_32(sc->scp->ie_iscp_ptr, pa);
! 440: /*
! 441: * rest of first page is unused (wasted!), rest of ram
! 442: * for buffers
! 443: */
! 444: sc->buf_area = sc->sc_maddr + NBPG;
! 445: sc->buf_area_sz = sc->sc_msize - NBPG;
! 446: myetheraddr(sc->sc_arpcom.ac_enaddr);
! 447:
! 448: if (ie_setupram(sc) == 0) {
! 449: printf(": RAM CONFIG FAILED!\n");
! 450: /* XXX should reclaim resources? */
! 451: return;
! 452: }
! 453: bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
! 454: ifp->if_softc = sc;
! 455: ifp->if_start = iestart;
! 456: ifp->if_ioctl = ieioctl;
! 457: ifp->if_watchdog = iewatchdog;
! 458: ifp->if_flags =
! 459: IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
! 460:
! 461: /* Attach the interface. */
! 462: if_attach(ifp);
! 463: ether_ifattach(ifp);
! 464:
! 465: printf(": address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr));
! 466:
! 467: sc->sc_bustype = ca->ca_bustype;
! 468:
! 469: sc->sc_ih.ih_fn = ieintr;
! 470: sc->sc_ih.ih_arg = sc;
! 471: sc->sc_ih.ih_wantframe = 0;
! 472: sc->sc_ih.ih_ipl = ca->ca_ipl;
! 473:
! 474: sc->sc_failih.ih_fn = iefailintr;
! 475: sc->sc_failih.ih_arg = sc;
! 476: sc->sc_failih.ih_wantframe = 0;
! 477: sc->sc_failih.ih_ipl = ca->ca_ipl;
! 478:
! 479: pcctwointr_establish(PCC2V_IE, &sc->sc_ih, self->dv_xname);
! 480: snprintf(sc->sc_failintrname, sizeof sc->sc_failintrname, "%s_err",
! 481: self->dv_xname);
! 482: pcctwointr_establish(PCC2V_IEFAIL, &sc->sc_failih, sc->sc_failintrname);
! 483:
! 484: /* enable device interrupts */
! 485: bus_space_write_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 486: PCCTWO_IEICR, PCC2_SC_SNOOP | PCC2_IRQ_IEN | PCC2_IRQ_ICLR |
! 487: (ca->ca_ipl & PCC2_IRQ_IPL));
! 488: bus_space_write_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 489: PCCTWO_IEBERR, PCC2_IRQ_IEN | PCC2_IRQ_ICLR |
! 490: (ca->ca_ipl & PCC2_IRQ_IPL));
! 491: }
! 492:
! 493: /*
! 494: * Device timeout/watchdog routine. Entered if the device neglects to generate
! 495: * an interrupt after a transmit has been started on it.
! 496: */
! 497: void
! 498: iewatchdog(ifp)
! 499: struct ifnet *ifp;
! 500: {
! 501: struct ie_softc *sc = ifp->if_softc;
! 502:
! 503: log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname);
! 504: ++sc->sc_arpcom.ac_if.if_oerrors;
! 505:
! 506: iereset(sc);
! 507: }
! 508:
! 509: int
! 510: iefailintr(v)
! 511: void *v;
! 512: {
! 513: struct ie_softc *sc = v;
! 514:
! 515: /* safe: clear irq */
! 516: bus_space_write_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 517: PCCTWO_IEICR, PCC2_IRQ_ICLR |
! 518: bus_space_read_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 519: PCCTWO_IEICR));
! 520: /* clear failure */
! 521: bus_space_write_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 522: PCCTWO_IEBERR, PCC2_IRQ_ICLR |
! 523: bus_space_read_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 524: PCCTWO_IEBERR));
! 525: /* reset error */
! 526: bus_space_write_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 527: PCCTWO_IEERR, PCC2_IEERR_SCLR);
! 528:
! 529: iereset(sc);
! 530: return (1);
! 531: }
! 532:
! 533: /*
! 534: * What to do upon receipt of an interrupt.
! 535: */
! 536: int
! 537: ieintr(v)
! 538: void *v;
! 539: {
! 540: struct ie_softc *sc = v;
! 541: u_short status;
! 542:
! 543: status = sc->scb->ie_status;
! 544:
! 545: loop:
! 546: /* Ack interrupts FIRST in case we receive more during the ISR. */
! 547: ie_ack(sc, IE_ST_WHENCE & status);
! 548: /* clear irq */
! 549: bus_space_write_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 550: PCCTWO_IEICR, PCC2_IRQ_ICLR |
! 551: bus_space_read_1(sc->sc_pcctwo->sc_iot, sc->sc_pcctwo->sc_ioh,
! 552: PCCTWO_IEICR));
! 553:
! 554: if (status & (IE_ST_RECV | IE_ST_RNR)) {
! 555: #ifdef IEDEBUG
! 556: in_ierint++;
! 557: if (sc->sc_debug & IED_RINT)
! 558: printf("%s: rint\n", sc->sc_dev.dv_xname);
! 559: #endif
! 560: ierint(sc);
! 561: #ifdef IEDEBUG
! 562: in_ierint--;
! 563: #endif
! 564: }
! 565:
! 566: if (status & IE_ST_DONE) {
! 567: #ifdef IEDEBUG
! 568: in_ietint++;
! 569: if (sc->sc_debug & IED_TINT)
! 570: printf("%s: tint\n", sc->sc_dev.dv_xname);
! 571: #endif
! 572: ietint(sc);
! 573: #ifdef IEDEBUG
! 574: in_ietint--;
! 575: #endif
! 576: }
! 577:
! 578: if (status & IE_ST_RNR) {
! 579: printf("%s: receiver not ready\n", sc->sc_dev.dv_xname);
! 580: sc->sc_arpcom.ac_if.if_ierrors++;
! 581: iereset(sc);
! 582: }
! 583:
! 584: #ifdef IEDEBUG
! 585: if ((status & IE_ST_ALLDONE) && (sc->sc_debug & IED_CNA))
! 586: printf("%s: cna\n", sc->sc_dev.dv_xname);
! 587: #endif
! 588:
! 589: if ((status = sc->scb->ie_status) & IE_ST_WHENCE)
! 590: goto loop;
! 591:
! 592: return 1;
! 593: }
! 594:
! 595: /*
! 596: * Process a received-frame interrupt.
! 597: */
! 598: void
! 599: ierint(sc)
! 600: struct ie_softc *sc;
! 601: {
! 602: struct ie_sys_ctl_block *volatile scb = sc->scb;
! 603: int i, status;
! 604: static int timesthru = 1024;
! 605:
! 606: i = sc->rfhead;
! 607: for (;;) {
! 608: status = sc->rframes[i]->ie_fd_status;
! 609:
! 610: if ((status & IE_FD_COMPLETE) && (status & IE_FD_OK)) {
! 611: sc->sc_arpcom.ac_if.if_ipackets++;
! 612: if (!--timesthru) {
! 613: sc->sc_arpcom.ac_if.if_ierrors +=
! 614: MK_32(scb->ie_err_crc) +
! 615: MK_32(scb->ie_err_align) +
! 616: MK_32(scb->ie_err_resource) +
! 617: MK_32(scb->ie_err_overrun) +
! 618: MK_32(scb->ie_err_coll) +
! 619: MK_32(scb->ie_err_short);
! 620: scb->ie_err_crc = 0;
! 621: scb->ie_err_align = 0;
! 622: scb->ie_err_resource = 0;
! 623: scb->ie_err_overrun = 0;
! 624: scb->ie_err_coll = 0;
! 625: scb->ie_err_short = 0;
! 626: timesthru = 1024;
! 627: }
! 628: ie_readframe(sc, i);
! 629: } else {
! 630: if ((status & IE_FD_RNR) != 0 &&
! 631: (scb->ie_status & IE_RU_READY) == 0) {
! 632: sc->rframes[0]->ie_fd_buf_desc = ASWAP(sc->rbuffs[0]);
! 633: scb->ie_recv_list = ASWAP(sc->rframes[0]);
! 634: command_and_wait(sc, IE_RU_START, 0, 0);
! 635: }
! 636: break;
! 637: }
! 638: i = (i + 1) % sc->nframes;
! 639: }
! 640: }
! 641:
! 642: /*
! 643: * Process a command-complete interrupt. These are only generated by the
! 644: * transmission of frames. This routine is deceptively simple, since most of
! 645: * the real work is done by iestart().
! 646: */
! 647: void
! 648: ietint(sc)
! 649: struct ie_softc *sc;
! 650: {
! 651: int status;
! 652:
! 653: sc->sc_arpcom.ac_if.if_timer = 0;
! 654: sc->sc_arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
! 655:
! 656: status = sc->xmit_cmds[sc->xctail]->ie_xmit_status;
! 657:
! 658: if (!(status & IE_STAT_COMPL) || (status & IE_STAT_BUSY))
! 659: printf("ietint: command still busy!\n");
! 660:
! 661: if (status & IE_STAT_OK) {
! 662: sc->sc_arpcom.ac_if.if_opackets++;
! 663: sc->sc_arpcom.ac_if.if_collisions += status & IE_XS_MAXCOLL;
! 664: } else if (status & IE_STAT_ABORT) {
! 665: printf("%s: send aborted\n", sc->sc_dev.dv_xname);
! 666: sc->sc_arpcom.ac_if.if_oerrors++;
! 667: } else if (status & IE_XS_NOCARRIER) {
! 668: printf("%s: no carrier\n", sc->sc_dev.dv_xname);
! 669: sc->sc_arpcom.ac_if.if_oerrors++;
! 670: } else if (status & IE_XS_LOSTCTS) {
! 671: printf("%s: lost CTS\n", sc->sc_dev.dv_xname);
! 672: sc->sc_arpcom.ac_if.if_oerrors++;
! 673: } else if (status & IE_XS_UNDERRUN) {
! 674: printf("%s: DMA underrun\n", sc->sc_dev.dv_xname);
! 675: sc->sc_arpcom.ac_if.if_oerrors++;
! 676: } else if (status & IE_XS_EXCMAX) {
! 677: printf("%s: too many collisions\n", sc->sc_dev.dv_xname);
! 678: sc->sc_arpcom.ac_if.if_collisions += 16;
! 679: sc->sc_arpcom.ac_if.if_oerrors++;
! 680: }
! 681:
! 682: /*
! 683: * If multicast addresses were added or deleted while transmitting,
! 684: * mc_reset() set the want_mcsetup flag indicating that we should do
! 685: * it.
! 686: */
! 687: if (sc->want_mcsetup) {
! 688: mc_setup(sc, (caddr_t)sc->xmit_cbuffs[sc->xctail]);
! 689: sc->want_mcsetup = 0;
! 690: }
! 691:
! 692: /* Done with the buffer. */
! 693: sc->xmit_free++;
! 694: sc->xmit_busy = 0;
! 695: sc->xctail = (sc->xctail + 1) % NTXBUF;
! 696:
! 697: iestart(&sc->sc_arpcom.ac_if);
! 698: }
! 699:
! 700: /*
! 701: * Compare two Ether/802 addresses for equality, inlined and unrolled for
! 702: * speed. I'd love to have an inline assembler version of this...
! 703: */
! 704: static inline int
! 705: ether_equal(one, two)
! 706: u_char *one, *two;
! 707: {
! 708:
! 709: if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] ||
! 710: one[3] != two[3] || one[4] != two[4] || one[5] != two[5])
! 711: return 0;
! 712: return 1;
! 713: }
! 714:
! 715: /*
! 716: * Check for a valid address. to_bpf is filled in with one of the following:
! 717: * 0 -> BPF doesn't get this packet
! 718: * 1 -> BPF does get this packet
! 719: * 2 -> BPF does get this packet, but we don't
! 720: * Return value is true if the packet is for us, and false otherwise.
! 721: *
! 722: * This routine is a mess, but it's also critical that it be as fast
! 723: * as possible. It could be made cleaner if we can assume that the
! 724: * only client which will fiddle with IFF_PROMISC is BPF. This is
! 725: * probably a good assumption, but we do not make it here. (Yet.)
! 726: */
! 727: static inline int
! 728: check_eh(sc, eh, to_bpf)
! 729: struct ie_softc *sc;
! 730: struct ether_header *eh;
! 731: int *to_bpf;
! 732: {
! 733: int i;
! 734:
! 735: switch(sc->promisc) {
! 736: case IFF_ALLMULTI:
! 737: /*
! 738: * Receiving all multicasts, but no unicasts except those
! 739: * destined for us.
! 740: */
! 741: #if NBPFILTER > 0
! 742: *to_bpf = (sc->sc_arpcom.ac_if.if_bpf != 0); /* BPF gets this packet if anybody cares */
! 743: #endif
! 744: if (eh->ether_dhost[0] & 1)
! 745: return 1;
! 746: if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) return 1;
! 747: return 0;
! 748:
! 749: case IFF_PROMISC:
! 750: /*
! 751: * Receiving all packets. These need to be passed on to BPF.
! 752: */
! 753: #if NBPFILTER > 0
! 754: *to_bpf = (sc->sc_arpcom.ac_if.if_bpf != 0) ||
! 755: (sc->sc_arpcom.ac_if.if_bridge != NULL);
! 756: #else
! 757: *to_bpf = (sc->sc_arpcom.ac_if.if_bridge != NULL);
! 758: #endif
! 759: /* If for us, accept and hand up to BPF */
! 760: if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) return 1;
! 761:
! 762: #if NBPFILTER > 0
! 763: if (*to_bpf && sc->sc_arpcom.ac_if.if_bridge == NULL)
! 764: *to_bpf = 2; /* we don't need to see it */
! 765: #endif
! 766:
! 767: /*
! 768: * Not a multicast, so BPF wants to see it but we don't.
! 769: */
! 770: if (!(eh->ether_dhost[0] & 1))
! 771: return 1;
! 772:
! 773: /*
! 774: * If it's one of our multicast groups, accept it and pass it
! 775: * up.
! 776: */
! 777: for (i = 0; i < sc->mcast_count; i++) {
! 778: if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) {
! 779: #if NBPFILTER > 0
! 780: if (*to_bpf)
! 781: *to_bpf = 1;
! 782: #endif
! 783: return 1;
! 784: }
! 785: }
! 786: return 1;
! 787:
! 788: case IFF_ALLMULTI | IFF_PROMISC:
! 789: /*
! 790: * Acting as a multicast router, and BPF running at the same
! 791: * time. Whew! (Hope this is a fast machine...)
! 792: */
! 793: #if NBPFILTER > 0
! 794: *to_bpf = (sc->sc_arpcom.ac_if.if_bpf != 0) ||
! 795: (sc->sc_arpcom.ac_if.if_bridge != NULL);
! 796: #else
! 797: *to_bpf = (sc->sc_arpcom.ac_if.if_bridge != NULL);
! 798: #endif
! 799: /* We want to see multicasts. */
! 800: if (eh->ether_dhost[0] & 1)
! 801: return 1;
! 802:
! 803: /* We want to see our own packets */
! 804: if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr))
! 805: return 1;
! 806:
! 807: /* Anything else goes to BPF but nothing else. */
! 808: #if NBPFILTER > 0
! 809: if (*to_bpf && sc->sc_arpcom.ac_if.if_bridge == NULL)
! 810: *to_bpf = 2;
! 811: #endif
! 812: return 1;
! 813:
! 814: default:
! 815: /*
! 816: * Only accept unicast packets destined for us, or multicasts
! 817: * for groups that we belong to. For now, we assume that the
! 818: * '596 will only return packets that we asked it for. This
! 819: * isn't strictly true (it uses hashing for the multicast
! 820: * filter), but it will do in this case, and we want to get out
! 821: * of here as quickly as possible.
! 822: */
! 823: #if NBPFILTER > 0
! 824: *to_bpf = (sc->sc_arpcom.ac_if.if_bpf != 0);
! 825: #endif
! 826: return 1;
! 827: }
! 828: return 0;
! 829: }
! 830:
! 831: /*
! 832: * We want to isolate the bits that have meaning... This assumes that
! 833: * IE_RBUF_SIZE is an even power of two. If somehow the act_len exceeds
! 834: * the size of the buffer, then we are screwed anyway.
! 835: */
! 836: static inline int
! 837: ie_buflen(sc, head)
! 838: struct ie_softc *sc;
! 839: int head;
! 840: {
! 841:
! 842: return (sc->rbuffs[head]->ie_rbd_actual & (IE_RBUF_SIZE | (IE_RBUF_SIZE - 1)));
! 843: }
! 844:
! 845: static inline int
! 846: ie_packet_len(sc)
! 847: struct ie_softc *sc;
! 848: {
! 849: int i;
! 850: int head = sc->rbhead;
! 851: int acc = 0;
! 852:
! 853: do {
! 854: if (!(sc->rbuffs[sc->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
! 855: #ifdef IEDEBUG
! 856: print_rbd(sc->rbuffs[sc->rbhead]);
! 857: #endif
! 858: log(LOG_ERR, "%s: receive descriptors out of sync at %d\n",
! 859: sc->sc_dev.dv_xname, sc->rbhead);
! 860: iereset(sc);
! 861: return -1;
! 862: }
! 863:
! 864: i = sc->rbuffs[head]->ie_rbd_actual & IE_RBD_LAST;
! 865:
! 866: acc += ie_buflen(sc, head);
! 867: head = (head + 1) % sc->nrxbuf;
! 868: } while (!i);
! 869:
! 870: return acc;
! 871: }
! 872:
! 873: /*
! 874: * Setup all necessary artifacts for an XMIT command, and then pass the XMIT
! 875: * command to the chip to be executed. On the way, if we have a BPF listener
! 876: * also give him a copy.
! 877: */
! 878: inline static void
! 879: iexmit(sc)
! 880: struct ie_softc *sc;
! 881: {
! 882:
! 883: #if NBPFILTER > 0
! 884: /*
! 885: * If BPF is listening on this interface, let it see the packet before
! 886: * we push it on the wire.
! 887: */
! 888: if (sc->sc_arpcom.ac_if.if_bpf)
! 889: bpf_tap(sc->sc_arpcom.ac_if.if_bpf,
! 890: sc->xmit_cbuffs[sc->xctail],
! 891: sc->xmit_buffs[sc->xctail]->ie_xmit_flags,
! 892: BPF_DIRECTION_OUT);
! 893: #endif
! 894:
! 895: #if 0
! 896: printf("iexmit base %x cmd %x bfd %x to %x\n",
! 897: sc->sc_maddr,
! 898: sc->xmit_cmds[sc->xctail],
! 899: sc->xmit_buffs[sc->xctail],
! 900: sc->xmit_cbuffs[sc->xctail]);
! 901: #endif
! 902: sc->xmit_buffs[sc->xctail]->ie_xmit_flags |= IE_XMIT_LAST;
! 903: sc->xmit_buffs[sc->xctail]->ie_xmit_next = 0xffffffff;
! 904: SWT_32(sc->xmit_buffs[sc->xctail]->ie_xmit_buf,
! 905: sc->xmit_cbuffs[sc->xctail]);
! 906:
! 907: sc->xmit_cmds[sc->xctail]->com.ie_cmd_link = 0xffffffff;
! 908: sc->xmit_cmds[sc->xctail]->com.ie_cmd_cmd =
! 909: IE_CMD_XMIT | IE_CMD_INTR | IE_CMD_LAST | IE_CMD_FLEX;
! 910:
! 911: sc->xmit_cmds[sc->xctail]->ie_xmit_status = 0;
! 912: sc->xmit_cmds[sc->xctail]->ie_xmit_desc =
! 913: ASWAP(sc->xmit_buffs[sc->xctail]);
! 914: sc->xmit_cmds[sc->xctail]->ie_xmit_count = 0;
! 915:
! 916: sc->scb->ie_command_list =
! 917: ASWAP(sc->xmit_cmds[sc->xctail]);
! 918: command_and_wait(sc, IE_CU_START, 0, 0);
! 919:
! 920: sc->xmit_busy = 1;
! 921: sc->sc_arpcom.ac_if.if_timer = 5;
! 922: }
! 923:
! 924: /*
! 925: * Read data off the interface, and turn it into an mbuf chain.
! 926: *
! 927: * This code is DRAMATICALLY different from the previous version; this
! 928: * version tries to allocate the entire mbuf chain up front, given the
! 929: * length of the data available. This enables us to allocate mbuf
! 930: * clusters in many situations where before we would have had a long
! 931: * chain of partially-full mbufs. This should help to speed up the
! 932: * operation considerably. (Provided that it works, of course.)
! 933: */
! 934: int
! 935: ieget(sc, mp, ehp, to_bpf)
! 936: struct ie_softc *sc;
! 937: struct mbuf **mp;
! 938: struct ether_header *ehp;
! 939: int *to_bpf;
! 940: {
! 941: struct mbuf *m, *top, **mymp;
! 942: int i;
! 943: int offset;
! 944: int totlen, resid;
! 945: int thismboff;
! 946: int head;
! 947:
! 948: totlen = ie_packet_len(sc);
! 949: if (totlen <= 0)
! 950: return -1;
! 951:
! 952: i = sc->rbhead;
! 953:
! 954: /*
! 955: * Snarf the Ethernet header.
! 956: */
! 957: (sc->memcopy)((caddr_t)sc->cbuffs[i], (caddr_t)ehp, sizeof *ehp);
! 958:
! 959: /*
! 960: * As quickly as possible, check if this packet is for us.
! 961: * If not, don't waste a single cycle copying the rest of the
! 962: * packet in.
! 963: * This is only a consideration when FILTER is defined; i.e., when
! 964: * we are either running BPF or doing multicasting.
! 965: */
! 966: if (!check_eh(sc, ehp, to_bpf)) {
! 967: ie_drop_packet_buffer(sc);
! 968: sc->sc_arpcom.ac_if.if_ierrors--; /* just this case, it's not an error */
! 969: return -1;
! 970: }
! 971: totlen -= (offset = sizeof *ehp);
! 972:
! 973: MGETHDR(*mp, M_DONTWAIT, MT_DATA);
! 974: if (!*mp) {
! 975: ie_drop_packet_buffer(sc);
! 976: return -1;
! 977: }
! 978:
! 979: m = *mp;
! 980: m->m_pkthdr.rcvif = &sc->sc_arpcom.ac_if;
! 981: m->m_len = MHLEN;
! 982: resid = m->m_pkthdr.len = totlen;
! 983: top = 0;
! 984: mymp = ⊤
! 985:
! 986: /*
! 987: * This loop goes through and allocates mbufs for all the data we will
! 988: * be copying in. It does not actually do the copying yet.
! 989: */
! 990: do { /* while (resid > 0) */
! 991: /*
! 992: * Try to allocate an mbuf to hold the data that we have. If
! 993: * we already allocated one, just get another one and stick it
! 994: * on the end (eventually). If we don't already have one, try
! 995: * to allocate an mbuf cluster big enough to hold the whole
! 996: * packet, if we think it's reasonable, or a single mbuf which
! 997: * may or may not be big enough.
! 998: * Got that?
! 999: */
! 1000: if (top) {
! 1001: MGET(m, M_DONTWAIT, MT_DATA);
! 1002: if (!m) {
! 1003: m_freem(top);
! 1004: ie_drop_packet_buffer(sc);
! 1005: return -1;
! 1006: }
! 1007: m->m_len = MLEN;
! 1008: }
! 1009:
! 1010: if (resid >= MINCLSIZE) {
! 1011: MCLGET(m, M_DONTWAIT);
! 1012: if (m->m_flags & M_EXT)
! 1013: m->m_len = min(resid, MCLBYTES);
! 1014: } else {
! 1015: if (resid < m->m_len) {
! 1016: if (!top && resid + max_linkhdr <= m->m_len)
! 1017: m->m_data += max_linkhdr;
! 1018: m->m_len = resid;
! 1019: }
! 1020: }
! 1021: resid -= m->m_len;
! 1022: *mymp = m;
! 1023: mymp = &m->m_next;
! 1024: } while (resid > 0);
! 1025:
! 1026: resid = totlen;
! 1027: m = top;
! 1028: thismboff = 0;
! 1029: head = sc->rbhead;
! 1030:
! 1031: /*
! 1032: * Now we take the mbuf chain (hopefully only one mbuf most of the
! 1033: * time) and stuff the data into it. There are no possible failures at
! 1034: * or after this point.
! 1035: */
! 1036: while (resid > 0) { /* while there's stuff left */
! 1037: int thislen = ie_buflen(sc, head) - offset;
! 1038:
! 1039: /*
! 1040: * If too much data for the current mbuf, then fill the current
! 1041: * one up, go to the next one, and try again.
! 1042: */
! 1043: if (thislen > m->m_len - thismboff) {
! 1044: int newlen = m->m_len - thismboff;
! 1045: (sc->memcopy)((caddr_t)(sc->cbuffs[head] + offset),
! 1046: mtod(m, caddr_t) + thismboff, (u_int)newlen);
! 1047: m = m->m_next;
! 1048: thismboff = 0; /* new mbuf, so no offset */
! 1049: offset += newlen; /* we are now this far
! 1050: into the packet */
! 1051: resid -= newlen; /* so there is this much
! 1052: left to get */
! 1053: continue;
! 1054: }
! 1055:
! 1056: /*
! 1057: * If there is more than enough space in the mbuf to hold the
! 1058: * contents of this buffer, copy everything in, advance
! 1059: * pointers and so on.
! 1060: */
! 1061: if (thislen < m->m_len - thismboff) {
! 1062: (sc->memcopy)((caddr_t)(sc->cbuffs[head] + offset),
! 1063: mtod(m, caddr_t) + thismboff, (u_int)thislen);
! 1064: thismboff += thislen; /* we are this far into the mbuf */
! 1065: resid -= thislen; /* and this much is left */
! 1066: goto nextbuf;
! 1067: }
! 1068:
! 1069: /*
! 1070: * Otherwise, there is exactly enough space to put this
! 1071: * buffer's contents into the current mbuf. Do the combination
! 1072: * of the above actions.
! 1073: */
! 1074: (sc->memcopy)((caddr_t)(sc->cbuffs[head] + offset),
! 1075: mtod(m, caddr_t) + thismboff, (u_int)thislen);
! 1076: m = m->m_next;
! 1077: thismboff = 0; /* new mbuf, start at the beginning */
! 1078: resid -= thislen; /* and we are this far through */
! 1079:
! 1080: /*
! 1081: * Advance all the pointers. We can get here from either of
! 1082: * the last two cases, but never the first.
! 1083: */
! 1084: nextbuf:
! 1085: offset = 0;
! 1086: sc->rbuffs[head]->ie_rbd_actual = 0;
! 1087: sc->rbuffs[head]->ie_rbd_length |= IE_RBD_LAST;
! 1088: sc->rbhead = head = (head + 1) % sc->nrxbuf;
! 1089: sc->rbuffs[sc->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
! 1090: sc->rbtail = (sc->rbtail + 1) % sc->nrxbuf;
! 1091: }
! 1092:
! 1093: /*
! 1094: * Unless something changed strangely while we were doing the copy, we
! 1095: * have now copied everything in from the shared memory.
! 1096: * This means that we are done.
! 1097: */
! 1098: return 0;
! 1099: }
! 1100:
! 1101: /*
! 1102: * Read frame NUM from unit UNIT (pre-cached as IE).
! 1103: *
! 1104: * This routine reads the RFD at NUM, and copies in the buffers from the list
! 1105: * of RBD, then rotates the RBD and RFD lists so that the receiver doesn't
! 1106: * start complaining. Trailers are DROPPED---there's no point in wasting time
! 1107: * on confusing code to deal with them. Hopefully, this machine will never ARP
! 1108: * for trailers anyway.
! 1109: */
! 1110: void
! 1111: ie_readframe(sc, num)
! 1112: struct ie_softc *sc;
! 1113: int num; /* frame number to read */
! 1114: {
! 1115: int status;
! 1116: struct mbuf *m = 0;
! 1117: struct ether_header eh;
! 1118: #if NBPFILTER > 0
! 1119: int bpf_gets_it = 0;
! 1120: #endif
! 1121:
! 1122: status = sc->rframes[num]->ie_fd_status;
! 1123:
! 1124: /* Immediately advance the RFD list, since we have copied ours now. */
! 1125: sc->rframes[num]->ie_fd_status = 0;
! 1126: sc->rframes[num]->ie_fd_actual = 0;
! 1127: sc->rframes[num]->ie_fd_last |= IE_FD_LAST;
! 1128: sc->rframes[sc->rftail]->ie_fd_last &= ~IE_FD_LAST;
! 1129: sc->rftail = (sc->rftail + 1) % sc->nframes;
! 1130: sc->rfhead = (sc->rfhead + 1) % sc->nframes;
! 1131:
! 1132: if (status & IE_FD_OK) {
! 1133: #if NBPFILTER > 0
! 1134: if (ieget(sc, &m, &eh, &bpf_gets_it)) {
! 1135: #else
! 1136: if (ieget(sc, &m, &eh, 0)) {
! 1137: #endif
! 1138: sc->sc_arpcom.ac_if.if_ierrors++;
! 1139: return;
! 1140: }
! 1141: }
! 1142:
! 1143: #ifdef IEDEBUG
! 1144: if (sc->sc_debug & IED_READFRAME)
! 1145: printf("%s: frame from ether %s type %x\n", sc->sc_dev.dv_xname,
! 1146: ether_sprintf(eh.ether_shost), (u_int)eh.ether_type);
! 1147: #endif
! 1148:
! 1149: if (!m)
! 1150: return;
! 1151:
! 1152: if (last_not_for_us) {
! 1153: m_freem(last_not_for_us);
! 1154: last_not_for_us = 0;
! 1155: }
! 1156:
! 1157: #if NBPFILTER > 0
! 1158: /*
! 1159: * Check for a BPF filter; if so, hand it up.
! 1160: * Note that we have to stick an extra mbuf up front, because bpf_mtap
! 1161: * expects to have the ether header at the front.
! 1162: * It doesn't matter that this results in an ill-formatted mbuf chain,
! 1163: * since BPF just looks at the data. (It doesn't try to free the mbuf,
! 1164: * tho' it will make a copy for tcpdump.)
! 1165: */
! 1166: if (bpf_gets_it) {
! 1167: /* Pass it up. */
! 1168: bpf_mtap_hdr(sc->sc_arpcom.ac_if.if_bpf, (caddr_t)&eh,
! 1169: sizeof(eh), m, BPF_DIRECTION_IN);
! 1170: }
! 1171: /*
! 1172: * A signal passed up from the filtering code indicating that the
! 1173: * packet is intended for BPF but not for the protocol machinery.
! 1174: * We can save a few cycles by not handing it off to them.
! 1175: */
! 1176: if (bpf_gets_it == 2) {
! 1177: last_not_for_us = m;
! 1178: return;
! 1179: }
! 1180: #endif /* NBPFILTER > 0 */
! 1181:
! 1182: /*
! 1183: * In here there used to be code to check destination addresses upon
! 1184: * receipt of a packet. We have deleted that code, and replaced it
! 1185: * with code to check the address much earlier in the cycle, before
! 1186: * copying the data in; this saves us valuable cycles when operating
! 1187: * as a multicast router or when using BPF.
! 1188: */
! 1189:
! 1190: /*
! 1191: * Finally pass this packet up to higher layers.
! 1192: */
! 1193: ether_input(&sc->sc_arpcom.ac_if, &eh, m);
! 1194: }
! 1195:
! 1196: void
! 1197: ie_drop_packet_buffer(sc)
! 1198: struct ie_softc *sc;
! 1199: {
! 1200: int i;
! 1201:
! 1202: do {
! 1203: /*
! 1204: * This means we are somehow out of sync. So, we reset the
! 1205: * adapter.
! 1206: */
! 1207: if (!(sc->rbuffs[sc->rbhead]->ie_rbd_actual & IE_RBD_USED)) {
! 1208: #ifdef IEDEBUG
! 1209: print_rbd(sc->rbuffs[sc->rbhead]);
! 1210: #endif
! 1211: log(LOG_ERR, "%s: receive descriptors out of sync at %d\n",
! 1212: sc->sc_dev.dv_xname, sc->rbhead);
! 1213: iereset(sc);
! 1214: return;
! 1215: }
! 1216:
! 1217: i = sc->rbuffs[sc->rbhead]->ie_rbd_actual & IE_RBD_LAST;
! 1218:
! 1219: sc->rbuffs[sc->rbhead]->ie_rbd_length |= IE_RBD_LAST;
! 1220: sc->rbuffs[sc->rbhead]->ie_rbd_actual = 0;
! 1221: sc->rbhead = (sc->rbhead + 1) % sc->nrxbuf;
! 1222: sc->rbuffs[sc->rbtail]->ie_rbd_length &= ~IE_RBD_LAST;
! 1223: sc->rbtail = (sc->rbtail + 1) % sc->nrxbuf;
! 1224: } while (!i);
! 1225: }
! 1226:
! 1227:
! 1228: /*
! 1229: * Start transmission on an interface.
! 1230: */
! 1231: void
! 1232: iestart(ifp)
! 1233: struct ifnet *ifp;
! 1234: {
! 1235: struct ie_softc *sc = ifp->if_softc;
! 1236: struct mbuf *m0, *m;
! 1237: u_char *buffer;
! 1238: u_short len;
! 1239:
! 1240: if ((ifp->if_flags & IFF_RUNNING) == 0)
! 1241: return;
! 1242:
! 1243: if (sc->xmit_free == 0) {
! 1244: ifp->if_flags |= IFF_OACTIVE;
! 1245: if (!sc->xmit_busy)
! 1246: iexmit(sc);
! 1247: return;
! 1248: }
! 1249:
! 1250: do {
! 1251: IF_DEQUEUE(&sc->sc_arpcom.ac_if.if_snd, m);
! 1252: if (!m)
! 1253: break;
! 1254:
! 1255: len = 0;
! 1256: buffer = sc->xmit_cbuffs[sc->xchead];
! 1257:
! 1258: for (m0 = m; m && (len +m->m_len) < IE_TBUF_SIZE;
! 1259: m = m->m_next) {
! 1260: bcopy(mtod(m, caddr_t), buffer, m->m_len);
! 1261: buffer += m->m_len;
! 1262: len += m->m_len;
! 1263: }
! 1264: if (m)
! 1265: printf("%s: tbuf overflow\n", sc->sc_dev.dv_xname);
! 1266:
! 1267: m_freem(m0);
! 1268:
! 1269: if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) {
! 1270: bzero(buffer, ETHER_MIN_LEN - ETHER_CRC_LEN - len);
! 1271: len = ETHER_MIN_LEN - ETHER_CRC_LEN;
! 1272: buffer += ETHER_MIN_LEN - ETHER_CRC_LEN;
! 1273: }
! 1274:
! 1275: sc->xmit_buffs[sc->xchead]->ie_xmit_flags = len;
! 1276:
! 1277: sc->xmit_free--;
! 1278: sc->xchead = (sc->xchead + 1) % NTXBUF;
! 1279: } while (sc->xmit_free > 0);
! 1280:
! 1281: /* If we stuffed any packets into the card's memory, send now. */
! 1282: if ((sc->xmit_free < NTXBUF) && (!sc->xmit_busy))
! 1283: iexmit(sc);
! 1284:
! 1285: return;
! 1286: }
! 1287:
! 1288: /*
! 1289: * set up IE's ram space
! 1290: */
! 1291: int
! 1292: ie_setupram(sc)
! 1293: struct ie_softc *sc;
! 1294: {
! 1295: struct ie_int_sys_conf_ptr *volatile iscp;
! 1296: struct ie_sys_ctl_block *volatile scb;
! 1297: int s;
! 1298:
! 1299: s = splnet();
! 1300:
! 1301: iscp = sc->iscp;
! 1302: (sc->memzero)((char *) iscp, sizeof *iscp);
! 1303:
! 1304: scb = sc->scb;
! 1305: (sc->memzero)((char *) scb, sizeof *scb);
! 1306: scb->ie_off_timer = 10;
! 1307: scb->ie_on_timer = 10000;
! 1308:
! 1309: iscp->ie_busy = 1; /* ie_busy == char */
! 1310: SWT_32(iscp->ie_base, sc->scb);
! 1311:
! 1312: (sc->reset_596) (sc);
! 1313: (sc->chan_attn) (sc);
! 1314:
! 1315: delay(100); /* wait a while... */
! 1316:
! 1317: if (iscp->ie_busy) {
! 1318: splx(s);
! 1319: return 0;
! 1320: }
! 1321: /*
! 1322: * Acknowledge any interrupts we may have caused...
! 1323: */
! 1324: ie_ack(sc, IE_ST_WHENCE);
! 1325: splx(s);
! 1326:
! 1327: return 1;
! 1328: }
! 1329:
! 1330: void
! 1331: iereset(sc)
! 1332: struct ie_softc *sc;
! 1333: {
! 1334: int s = splnet();
! 1335:
! 1336: printf("%s: reset\n", sc->sc_dev.dv_xname);
! 1337:
! 1338: /* Clear OACTIVE in case we're called from watchdog (frozen xmit). */
! 1339: sc->sc_arpcom.ac_if.if_flags &= ~(IFF_UP | IFF_OACTIVE);
! 1340: ieioctl(&sc->sc_arpcom.ac_if, SIOCSIFFLAGS, 0);
! 1341:
! 1342: /*
! 1343: * Stop i82596 dead in its tracks.
! 1344: */
! 1345: if (command_and_wait(sc, IE_RU_ABORT | IE_CU_ABORT, 0, 0))
! 1346: printf("%s: abort commands timed out\n", sc->sc_dev.dv_xname);
! 1347:
! 1348: if (command_and_wait(sc, IE_RU_DISABLE | IE_CU_STOP, 0, 0))
! 1349: printf("%s: disable commands timed out\n", sc->sc_dev.dv_xname);
! 1350:
! 1351: #ifdef notdef
! 1352: if (!check_ie_present(sc, sc->sc_maddr, sc->sc_msize))
! 1353: panic("ie disappeared!");
! 1354: #endif
! 1355:
! 1356: sc->sc_arpcom.ac_if.if_flags |= IFF_UP;
! 1357: ieioctl(&sc->sc_arpcom.ac_if, SIOCSIFFLAGS, 0);
! 1358:
! 1359: splx(s);
! 1360: }
! 1361:
! 1362: #if 0
! 1363: /*
! 1364: * This is called if we time out.
! 1365: */
! 1366: static void
! 1367: chan_attn_timeout(rock)
! 1368: caddr_t rock;
! 1369: {
! 1370:
! 1371: *(int *)rock = 1;
! 1372: }
! 1373: #endif
! 1374:
! 1375: /*
! 1376: * Send a command to the controller and wait for it to either complete
! 1377: * or be accepted, depending on the command. If the command pointer
! 1378: * is null, then pretend that the command is not an action command.
! 1379: * If the command pointer is not null, and the command is an action
! 1380: * command, wait for
! 1381: * ((struct ie_cmd_common *volatile)pcmd)->ie_cmd_status & MASK
! 1382: * to become true.
! 1383: */
! 1384: int
! 1385: command_and_wait(sc, cmd, pcmd, mask)
! 1386: struct ie_softc *sc;
! 1387: int cmd;
! 1388: void *volatile pcmd;
! 1389: int mask;
! 1390: {
! 1391: struct ie_cmd_common *volatile cc = pcmd;
! 1392: struct ie_sys_ctl_block *volatile scb = sc->scb;
! 1393: volatile int timedout = 0;
! 1394: #if 0
! 1395: struct timeout chan_tmo;
! 1396: extern int hz;
! 1397: #endif
! 1398:
! 1399: scb->ie_command = (u_short)cmd;
! 1400:
! 1401: if (IE_ACTION_COMMAND(cmd) && pcmd) {
! 1402: (sc->chan_attn)(sc);
! 1403:
! 1404: #if 0
! 1405: /*
! 1406: * XXX
! 1407: * I don't think this timeout works on suns.
! 1408: * we are at splnet() in the loop, and the timeout
! 1409: * stuff runs at software spl (so it is masked off?).
! 1410: */
! 1411:
! 1412: /*
! 1413: * According to the packet driver, the minimum timeout should
! 1414: * be .369 seconds, which we round up to .4.
! 1415: */
! 1416: timeout_set(&chan_tmo, chan_attn_timeout, (caddr_t)&timedout);
! 1417: timeout_add(&chan_tmo, (caddr_t)&timedout, 2 * hz / 5);
! 1418: #endif
! 1419:
! 1420: /*
! 1421: * Now spin-lock waiting for status. This is not a very nice
! 1422: * thing to do, but I haven't figured out how, or indeed if, we
! 1423: * can put the process waiting for action to sleep. (We may
! 1424: * be getting called through some other timeout running in the
! 1425: * kernel.)
! 1426: */
! 1427: for (;;)
! 1428: if ((cc->ie_cmd_status & mask) || timedout)
! 1429: break;
! 1430: #if 0
! 1431: timeout_del(&chan_tmo);
! 1432: #endif
! 1433:
! 1434: return timedout;
! 1435: } else {
! 1436: /*
! 1437: * Otherwise, just wait for the command to be accepted.
! 1438: */
! 1439: (sc->chan_attn)(sc);
! 1440:
! 1441: while (scb->ie_command)
! 1442: ; /* XXX spin lock */
! 1443:
! 1444: return 0;
! 1445: }
! 1446: }
! 1447:
! 1448: /*
! 1449: * Run the time-domain reflectometer.
! 1450: */
! 1451: void
! 1452: run_tdr(sc, cmd)
! 1453: struct ie_softc *sc;
! 1454: struct ie_tdr_cmd *cmd;
! 1455: {
! 1456: int result;
! 1457:
! 1458: cmd->com.ie_cmd_status = 0;
! 1459: cmd->com.ie_cmd_cmd = IE_CMD_TDR | IE_CMD_LAST;
! 1460: cmd->com.ie_cmd_link = 0xffffffff;
! 1461:
! 1462: sc->scb->ie_command_list = ASWAP(cmd);
! 1463: cmd->ie_tdr_time = 0;
! 1464:
! 1465: if (command_and_wait(sc, IE_CU_START, cmd, IE_STAT_COMPL) ||
! 1466: !(cmd->com.ie_cmd_status & IE_STAT_OK))
! 1467: result = 0x10000; /* XXX */
! 1468: else
! 1469: result = cmd->ie_tdr_time;
! 1470:
! 1471: ie_ack(sc, IE_ST_WHENCE);
! 1472:
! 1473: if (result & IE_TDR_SUCCESS)
! 1474: return;
! 1475:
! 1476: if (result & 0x10000)
! 1477: printf("%s: TDR command failed\n", sc->sc_dev.dv_xname);
! 1478: else if (result & IE_TDR_XCVR)
! 1479: printf("%s: transceiver problem\n", sc->sc_dev.dv_xname);
! 1480: else if (result & IE_TDR_OPEN)
! 1481: printf("%s: TDR detected an open %d clocks away\n",
! 1482: sc->sc_dev.dv_xname, result & IE_TDR_TIME);
! 1483: else if (result & IE_TDR_SHORT)
! 1484: printf("%s: TDR detected a short %d clocks away\n",
! 1485: sc->sc_dev.dv_xname, result & IE_TDR_TIME);
! 1486: else
! 1487: printf("%s: TDR returned unknown status %x\n",
! 1488: sc->sc_dev.dv_xname, result);
! 1489: }
! 1490:
! 1491: #ifdef notdef
! 1492: /* ALIGN works on 8 byte boundaries.... but 4 byte boundaries are ok for sun */
! 1493: #define _ALLOC(p, n) (bzero(p, n), p += n, p - n)
! 1494: #define ALLOC(p, n) _ALLOC(p, ALIGN(n)) /* XXX convert to this? */
! 1495: #endif
! 1496:
! 1497: static inline caddr_t
! 1498: Align(ptr)
! 1499: caddr_t ptr;
! 1500: {
! 1501: u_long l = (u_long)ptr;
! 1502:
! 1503: l = (l + 3) & ~3L;
! 1504: return (caddr_t)l;
! 1505: }
! 1506:
! 1507: /*
! 1508: * setup_bufs: set up the buffers
! 1509: *
! 1510: * we have a block of KVA at sc->buf_area which is of size sc->buf_area_sz.
! 1511: * this is to be used for the buffers. the chip indexs its control data
! 1512: * structures with 16 bit offsets, and it indexes actual buffers with
! 1513: * 24 bit addresses. so we should allocate control buffers first so that
! 1514: * we don't overflow the 16 bit offset field. The number of transmit
! 1515: * buffers is fixed at compile time.
! 1516: *
! 1517: * note: this function was written to be easy to understand, rather than
! 1518: * highly efficient (it isn't in the critical path).
! 1519: */
! 1520: void
! 1521: setup_bufs(sc)
! 1522: struct ie_softc *sc;
! 1523: {
! 1524: caddr_t ptr = sc->buf_area; /* memory pool */
! 1525: int n, r;
! 1526:
! 1527: /*
! 1528: * step 0: zero memory and figure out how many recv buffers and
! 1529: * frames we can have. XXX CURRENTLY HARDWIRED AT MAX
! 1530: */
! 1531: (sc->memzero)(ptr, sc->buf_area_sz);
! 1532: ptr = Align(ptr); /* set alignment and stick with it */
! 1533:
! 1534: n = (int)Align((caddr_t)sizeof(struct ie_xmit_cmd)) +
! 1535: (int)Align((caddr_t)sizeof(struct ie_xmit_buf)) + IE_TBUF_SIZE;
! 1536: n *= NTXBUF; /* n = total size of xmit area */
! 1537:
! 1538: n = sc->buf_area_sz - n;/* n = free space for recv stuff */
! 1539:
! 1540: r = (int)Align((caddr_t)sizeof(struct ie_recv_frame_desc)) +
! 1541: (((int)Align((caddr_t)sizeof(struct ie_recv_buf_desc)) + IE_RBUF_SIZE) * B_PER_F);
! 1542:
! 1543: /* r = size of one R frame */
! 1544:
! 1545: sc->nframes = n / r;
! 1546: if (sc->nframes <= 0)
! 1547: panic("ie: bogus buffer calc");
! 1548: if (sc->nframes > MXFRAMES)
! 1549: sc->nframes = MXFRAMES;
! 1550:
! 1551: sc->nrxbuf = sc->nframes * B_PER_F;
! 1552:
! 1553: #ifdef IEDEBUG
! 1554: printf("IEDEBUG: %d frames %d bufs\n", sc->nframes, sc->nrxbuf);
! 1555: #endif
! 1556:
! 1557: /*
! 1558: * step 1a: lay out and zero frame data structures for transmit and recv
! 1559: */
! 1560: for (n = 0; n < NTXBUF; n++) {
! 1561: sc->xmit_cmds[n] = (struct ie_xmit_cmd *volatile)ptr;
! 1562: ptr = Align(ptr + sizeof(struct ie_xmit_cmd));
! 1563: }
! 1564:
! 1565: for (n = 0; n < sc->nframes; n++) {
! 1566: sc->rframes[n] = (struct ie_recv_frame_desc *volatile)ptr;
! 1567: ptr = Align(ptr + sizeof(struct ie_recv_frame_desc));
! 1568: }
! 1569:
! 1570: /*
! 1571: * step 1b: link together the recv frames and set EOL on last one
! 1572: */
! 1573: for (n = 0; n < sc->nframes; n++) {
! 1574: sc->rframes[n]->ie_fd_last = IE_FD_FLEX;
! 1575: sc->rframes[n]->ie_fd_size = 0;
! 1576: sc->rframes[n]->ie_fd_next =
! 1577: ASWAP(sc->rframes[(n + 1) % sc->nframes]);
! 1578: }
! 1579: sc->rframes[sc->nframes - 1]->ie_fd_last |= IE_FD_LAST;
! 1580:
! 1581: /*
! 1582: * step 2a: lay out and zero frame buffer structures for xmit and recv
! 1583: */
! 1584: for (n = 0; n < NTXBUF; n++) {
! 1585: sc->xmit_buffs[n] = (struct ie_xmit_buf *volatile)ptr;
! 1586: ptr = Align(ptr + sizeof(struct ie_xmit_buf));
! 1587: }
! 1588:
! 1589: for (n = 0; n < sc->nrxbuf; n++) {
! 1590: sc->rbuffs[n] = (struct ie_recv_buf_desc *volatile)ptr;
! 1591: ptr = Align(ptr + sizeof(struct ie_recv_buf_desc));
! 1592: }
! 1593:
! 1594: /*
! 1595: * step 2b: link together recv bufs and set EOL on last one
! 1596: */
! 1597: for (n = 0; n < sc->nrxbuf; n++) {
! 1598: sc->rbuffs[n]->ie_rbd_next =
! 1599: ASWAP(sc->rbuffs[(n + 1) % sc->nrxbuf]);
! 1600: }
! 1601: sc->rbuffs[sc->nrxbuf - 1]->ie_rbd_length |= IE_RBD_LAST;
! 1602:
! 1603: /*
! 1604: * step 3: allocate the actual data buffers for xmit and recv
! 1605: * recv buffer gets linked into recv_buf_desc list here
! 1606: */
! 1607: for (n = 0; n < NTXBUF; n++) {
! 1608: sc->xmit_cbuffs[n] = (u_char *) ptr;
! 1609: ptr = Align(ptr + IE_TBUF_SIZE);
! 1610: }
! 1611:
! 1612: /* Pointers to last packet sent and next available transmit buffer. */
! 1613: sc->xchead = sc->xctail = 0;
! 1614:
! 1615: /* Clear transmit-busy flag and set number of free transmit buffers. */
! 1616: sc->xmit_busy = 0;
! 1617: sc->xmit_free = NTXBUF;
! 1618:
! 1619: for (n = 0; n < sc->nrxbuf; n++) {
! 1620: sc->cbuffs[n] = (char *) ptr; /* XXX why char vs uchar? */
! 1621: sc->rbuffs[n]->ie_rbd_length = IE_RBUF_SIZE;
! 1622: SWT_32(sc->rbuffs[n]->ie_rbd_buffer, ptr);
! 1623: ptr = Align(ptr + IE_RBUF_SIZE);
! 1624: }
! 1625:
! 1626: /*
! 1627: * step 4: set the head and tail pointers on receive to keep track of
! 1628: * the order in which RFDs and RBDs are used. link in recv frames
! 1629: * and buffer into the scb.
! 1630: */
! 1631:
! 1632: sc->rfhead = 0;
! 1633: sc->rftail = sc->nframes - 1;
! 1634: sc->rbhead = 0;
! 1635: sc->rbtail = sc->nrxbuf - 1;
! 1636:
! 1637: sc->scb->ie_recv_list = ASWAP(sc->rframes[0]);
! 1638: sc->rframes[0]->ie_fd_buf_desc = ASWAP(sc->rbuffs[0]);
! 1639:
! 1640: #ifdef IEDEBUG
! 1641: printf("IE_DEBUG: reserved %d bytes\n", ptr - sc->buf_area);
! 1642: #endif
! 1643: }
! 1644:
! 1645: /*
! 1646: * Run the multicast setup command.
! 1647: * Called at splnet().
! 1648: */
! 1649: int
! 1650: mc_setup(sc, ptr)
! 1651: struct ie_softc *sc;
! 1652: void *ptr;
! 1653: {
! 1654: struct ie_mcast_cmd *volatile cmd = ptr;
! 1655:
! 1656: cmd->com.ie_cmd_status = 0;
! 1657: cmd->com.ie_cmd_cmd = IE_CMD_MCAST | IE_CMD_LAST;
! 1658: cmd->com.ie_cmd_link = 0xffffffff;
! 1659:
! 1660: (sc->memcopy)((caddr_t)sc->mcast_addrs, (caddr_t)cmd->ie_mcast_addrs,
! 1661: sc->mcast_count * sizeof *sc->mcast_addrs);
! 1662:
! 1663: cmd->ie_mcast_bytes = sc->mcast_count * ETHER_ADDR_LEN; /* grrr... */
! 1664:
! 1665: sc->scb->ie_command_list = ASWAP(cmd);
! 1666: if (command_and_wait(sc, IE_CU_START, cmd, IE_STAT_COMPL) ||
! 1667: !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
! 1668: printf("%s: multicast address setup command failed\n",
! 1669: sc->sc_dev.dv_xname);
! 1670: return 0;
! 1671: }
! 1672: return 1;
! 1673: }
! 1674:
! 1675: /*
! 1676: * This routine takes the environment generated by check_ie_present() and adds
! 1677: * to it all the other structures we need to operate the adapter. This
! 1678: * includes executing the CONFIGURE, IA-SETUP, and MC-SETUP commands, starting
! 1679: * the receiver unit, and clearing interrupts.
! 1680: *
! 1681: * THIS ROUTINE MUST BE CALLED AT splnet() OR HIGHER.
! 1682: */
! 1683: int
! 1684: ieinit(sc)
! 1685: struct ie_softc *sc;
! 1686: {
! 1687: struct ie_sys_ctl_block *volatile scb = sc->scb;
! 1688: void *ptr;
! 1689:
! 1690: ptr = sc->buf_area;
! 1691:
! 1692: /*
! 1693: * Set up bus throttles.
! 1694: */
! 1695:
! 1696: {
! 1697: if (command_and_wait(sc, IE_CU_THROTTLE, 0, 0)) {
! 1698: printf("%s: throttle set command failed\n",
! 1699: sc->sc_dev.dv_xname);
! 1700: return 0;
! 1701: }
! 1702: }
! 1703:
! 1704: /*
! 1705: * Send the configure command first.
! 1706: */
! 1707:
! 1708: {
! 1709: struct ie_config_cmd *volatile cmd = ptr;
! 1710:
! 1711: scb->ie_command_list = ASWAP(cmd);
! 1712: cmd->com.ie_cmd_status = 0;
! 1713: cmd->com.ie_cmd_cmd = IE_CMD_CONFIG | IE_CMD_LAST;
! 1714: cmd->com.ie_cmd_link = 0xffffffff;
! 1715:
! 1716: ie_setup_config(cmd, sc->promisc, 0);
! 1717:
! 1718: if (command_and_wait(sc, IE_CU_START, cmd, IE_STAT_COMPL) ||
! 1719: !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
! 1720: printf("%s: configure command failed\n",
! 1721: sc->sc_dev.dv_xname);
! 1722: return 0;
! 1723: }
! 1724: }
! 1725:
! 1726: /*
! 1727: * Now send the Individual Address Setup command.
! 1728: */
! 1729: {
! 1730: struct ie_iasetup_cmd *volatile cmd = ptr;
! 1731:
! 1732: scb->ie_command_list = ASWAP(cmd);
! 1733: cmd->com.ie_cmd_status = 0;
! 1734: cmd->com.ie_cmd_cmd = IE_CMD_IASETUP | IE_CMD_LAST;
! 1735: cmd->com.ie_cmd_link = 0xffffffff;
! 1736:
! 1737: (sc->memcopy)(sc->sc_arpcom.ac_enaddr,
! 1738: (caddr_t)&cmd->ie_address, sizeof cmd->ie_address);
! 1739:
! 1740: if (command_and_wait(sc, IE_CU_START, cmd, IE_STAT_COMPL) ||
! 1741: !(cmd->com.ie_cmd_status & IE_STAT_OK)) {
! 1742: printf("%s: individual address setup command failed\n",
! 1743: sc->sc_dev.dv_xname);
! 1744: return 0;
! 1745: }
! 1746: }
! 1747:
! 1748: /*
! 1749: * Now run the time-domain reflectometer.
! 1750: */
! 1751: run_tdr(sc, ptr);
! 1752:
! 1753: /*
! 1754: * Acknowledge any interrupts we have generated thus far.
! 1755: */
! 1756: ie_ack(sc, IE_ST_WHENCE);
! 1757:
! 1758: /*
! 1759: * Set up the transmit and recv buffers.
! 1760: */
! 1761: setup_bufs(sc);
! 1762:
! 1763: sc->sc_arpcom.ac_if.if_flags |= IFF_RUNNING; /* tell higher levels that we are here */
! 1764:
! 1765: sc->scb->ie_recv_list = ASWAP(sc->rframes[0]);
! 1766: command_and_wait(sc, IE_RU_START, 0, 0);
! 1767:
! 1768: ie_ack(sc, IE_ST_WHENCE);
! 1769:
! 1770: if (sc->run_596)
! 1771: (sc->run_596)(sc);
! 1772:
! 1773: return 0;
! 1774: }
! 1775:
! 1776: void
! 1777: iestop(sc)
! 1778: struct ie_softc *sc;
! 1779: {
! 1780:
! 1781: command_and_wait(sc, IE_RU_DISABLE, 0, 0);
! 1782: }
! 1783:
! 1784: int
! 1785: ieioctl(ifp, cmd, data)
! 1786: struct ifnet *ifp;
! 1787: u_long cmd;
! 1788: caddr_t data;
! 1789: {
! 1790: struct ie_softc *sc = ifp->if_softc;
! 1791: struct ifaddr *ifa = (struct ifaddr *)data;
! 1792: struct ifreq *ifr = (struct ifreq *)data;
! 1793: int s, error = 0;
! 1794:
! 1795: s = splnet();
! 1796:
! 1797: if ((error = ether_ioctl(ifp, &sc->sc_arpcom, cmd, data)) > 0) {
! 1798: splx(s);
! 1799: return error;
! 1800: }
! 1801:
! 1802: switch(cmd) {
! 1803:
! 1804: case SIOCSIFADDR:
! 1805: ifp->if_flags |= IFF_UP;
! 1806:
! 1807: switch(ifa->ifa_addr->sa_family) {
! 1808: #ifdef INET
! 1809: case AF_INET:
! 1810: ieinit(sc);
! 1811: arp_ifinit(&sc->sc_arpcom, ifa);
! 1812: break;
! 1813: #endif
! 1814: default:
! 1815: ieinit(sc);
! 1816: break;
! 1817: }
! 1818: break;
! 1819:
! 1820: case SIOCSIFFLAGS:
! 1821: sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI);
! 1822: if ((ifp->if_flags & IFF_UP) == 0 &&
! 1823: (ifp->if_flags & IFF_RUNNING) != 0) {
! 1824: /*
! 1825: * If interface is marked down and it is running, then
! 1826: * stop it.
! 1827: */
! 1828: iestop(sc);
! 1829: ifp->if_flags &= ~IFF_RUNNING;
! 1830: } else if ((ifp->if_flags & IFF_UP) != 0 &&
! 1831: (ifp->if_flags & IFF_RUNNING) == 0) {
! 1832: /*
! 1833: * If interface is marked up and it is stopped, then
! 1834: * start it.
! 1835: */
! 1836: ieinit(sc);
! 1837: } else {
! 1838: /*
! 1839: * Reset the interface to pick up changes in any other
! 1840: * flags that affect hardware registers.
! 1841: */
! 1842: iestop(sc);
! 1843: ieinit(sc);
! 1844: }
! 1845: #ifdef IEDEBUG
! 1846: if (ifp->if_flags & IFF_DEBUG)
! 1847: sc->sc_debug = IED_ALL;
! 1848: else
! 1849: sc->sc_debug = 0;
! 1850: #endif
! 1851: break;
! 1852:
! 1853: case SIOCADDMULTI:
! 1854: case SIOCDELMULTI:
! 1855: error = (cmd == SIOCADDMULTI) ?
! 1856: ether_addmulti(ifr, &sc->sc_arpcom):
! 1857: ether_delmulti(ifr, &sc->sc_arpcom);
! 1858:
! 1859: if (error == ENETRESET) {
! 1860: /*
! 1861: * Multicast list has changed; set the hardware filter
! 1862: * accordingly.
! 1863: */
! 1864: if (ifp->if_flags & IFF_RUNNING)
! 1865: mc_reset(sc);
! 1866: error = 0;
! 1867: }
! 1868: break;
! 1869:
! 1870: default:
! 1871: error = EINVAL;
! 1872: }
! 1873: splx(s);
! 1874: return error;
! 1875: }
! 1876:
! 1877: void
! 1878: mc_reset(sc)
! 1879: struct ie_softc *sc;
! 1880: {
! 1881: struct ether_multi *enm;
! 1882: struct ether_multistep step;
! 1883:
! 1884: /*
! 1885: * Step through the list of addresses.
! 1886: */
! 1887: sc->mcast_count = 0;
! 1888: ETHER_FIRST_MULTI(step, &sc->sc_arpcom, enm);
! 1889: while (enm) {
! 1890: if (sc->mcast_count >= MAXMCAST ||
! 1891: bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) {
! 1892: sc->sc_arpcom.ac_if.if_flags |= IFF_ALLMULTI;
! 1893: ieioctl(&sc->sc_arpcom.ac_if, SIOCSIFFLAGS, (void *)0);
! 1894: goto setflag;
! 1895: }
! 1896:
! 1897: bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6);
! 1898: sc->mcast_count++;
! 1899: ETHER_NEXT_MULTI(step, enm);
! 1900: }
! 1901: setflag:
! 1902: sc->want_mcsetup = 1;
! 1903: }
! 1904:
! 1905: #ifdef IEDEBUG
! 1906: void
! 1907: print_rbd(rbd)
! 1908: struct ie_recv_buf_desc *volatile rbd;
! 1909: {
! 1910:
! 1911: printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n"
! 1912: "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual,
! 1913: rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length,
! 1914: rbd->mbz);
! 1915: }
! 1916: #endif
! 1917:
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to if_ie.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / mvme88k / dev