/* $NetBSD: if_cnw.c,v 1.55 2010/04/05 07:21:47 joerg Exp $ */ /*- * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Michael Eriksson. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1996, 1997 Berkeley Software Design, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that this notice is retained, * the conditions in the following notices are met, and terms applying * to contributors in the following notices also apply to Berkeley * Software Design, Inc. * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by * Berkeley Software Design, Inc. * 4. Neither the name of the Berkeley Software Design, Inc. nor the names * of its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN, INC. BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Paul Borman, December 1996 * * This driver is derived from a generic frame work which is * Copyright(c) 1994,1995,1996 * Yoichi Shinoda, Yoshitaka Tokugawa, WIDE Project, Wildboar Project * and Foretune. All rights reserved. * * A linux driver was used as the "hardware reference manual" (i.e., * to determine registers and a general outline of how the card works) * That driver is publically available and copyright * * John Markus Bjørndalen * Department of Computer Science * University of Tromsø * Norway * johnm@staff.cs.uit.no, http://www.cs.uit.no/~johnm/ */ /* * This is a driver for the Xircom CreditCard Netwave (also known as * the Netwave Airsurfer) wireless LAN PCMCIA adapter. * * When this driver was developed, the Linux Netwave driver was used * as a hardware manual. That driver is Copyright (c) 1997 University * of Tromsø, Norway. It is part of the Linux pcmcia-cs package that * can be found at http://pcmcia-cs.sourceforge.net/. The most recent * version of the pcmcia-cs package when this driver was written was * 3.0.6. * * Unfortunately, a lot of explicit numeric constants were used in the * Linux driver. I have tried to use symbolic names whenever possible, * but since I don't have any real hardware documentation, there's * still one or two "magic numbers" :-(. * * Driver limitations: This driver doesn't do multicasting or receiver * promiscuity, because of missing hardware documentation. I couldn't * get receiver promiscuity to work, and I haven't even tried * multicast. Volunteers are welcome, of course :-). */ #include __KERNEL_RCSID(0, "$NetBSD: if_cnw.c,v 1.55 2010/04/05 07:21:47 joerg Exp $"); #include "opt_inet.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #include #include /* * Let these be patchable variables, initialized from macros that can * be set in the kernel config file. Someone with lots of spare time * could probably write a nice Netwave configuration program to do * this a little bit more elegantly :-). */ #ifndef CNW_DOMAIN #define CNW_DOMAIN 0x100 #endif int cnw_domain = CNW_DOMAIN; /* Domain */ #ifndef CNW_SCRAMBLEKEY #define CNW_SCRAMBLEKEY 0 #endif int cnw_skey = CNW_SCRAMBLEKEY; /* Scramble key */ /* * The card appears to work much better when we only allow one packet * "in the air" at a time. This is done by not allowing another packet * on the card, even if there is room. Turning this off will allow the * driver to stuff packets on the card as soon as a transmit buffer is * available. This does increase the number of collisions, though. * We can que a second packet if there are transmit buffers available, * but we do not actually send the packet until the last packet has * been written. */ #define ONE_AT_A_TIME /* * Netwave cards choke if we try to use io memory address >= 0x400. * Even though, CIS tuple does not talk about this. * Use memory mapped access. */ #define MEMORY_MAPPED int cnw_match(device_t, cfdata_t, void *); void cnw_attach(device_t, device_t, void *); int cnw_detach(device_t, int); int cnw_activate(device_t, enum devact); struct cnw_softc { struct device sc_dev; /* Device glue (must be first) */ struct ethercom sc_ethercom; /* Ethernet common part */ int sc_domain; /* Netwave domain */ int sc_skey; /* Netwave scramble key */ struct cnwstats sc_stats; /* PCMCIA-specific stuff */ struct pcmcia_function *sc_pf; /* PCMCIA function */ #ifndef MEMORY_MAPPED struct pcmcia_io_handle sc_pcioh; /* PCMCIA I/O space handle */ int sc_iowin; /* ...window */ bus_space_tag_t sc_iot; /* ...bus_space tag */ bus_space_handle_t sc_ioh; /* ...bus_space handle */ #endif struct pcmcia_mem_handle sc_pcmemh; /* PCMCIA memory handle */ bus_size_t sc_memoff; /* ...offset */ int sc_memwin; /* ...window */ bus_space_tag_t sc_memt; /* ...bus_space tag */ bus_space_handle_t sc_memh; /* ...bus_space handle */ void *sc_ih; /* Interrupt cookie */ struct timeval sc_txlast; /* When the last xmit was made */ int sc_active; /* Currently xmitting a packet */ int sc_resource; /* Resources alloc'ed on attach */ #define CNW_RES_PCIC 1 #define CNW_RES_IO 2 #define CNW_RES_MEM 4 #define CNW_RES_NET 8 }; CFATTACH_DECL(cnw, sizeof(struct cnw_softc), cnw_match, cnw_attach, cnw_detach, cnw_activate); void cnw_reset(struct cnw_softc *); void cnw_init(struct cnw_softc *); int cnw_enable(struct cnw_softc *sc); void cnw_disable(struct cnw_softc *sc); void cnw_config(struct cnw_softc *sc, u_int8_t *); void cnw_start(struct ifnet *); void cnw_transmit(struct cnw_softc *, struct mbuf *); struct mbuf *cnw_read(struct cnw_softc *); void cnw_recv(struct cnw_softc *); int cnw_intr(void *arg); int cnw_ioctl(struct ifnet *, u_long, void *); void cnw_watchdog(struct ifnet *); static int cnw_setdomain(struct cnw_softc *, int); static int cnw_setkey(struct cnw_softc *, int); /* ---------------------------------------------------------------- */ /* Help routines */ static int wait_WOC(struct cnw_softc *, int); static int read16(struct cnw_softc *, int); static int cnw_cmd(struct cnw_softc *, int, int, int, int); /* * Wait until the WOC (Write Operation Complete) bit in the * ASR (Adapter Status Register) is asserted. */ static int wait_WOC(struct cnw_softc *sc, int line) { int i, asr; for (i = 0; i < 5000; i++) { #ifndef MEMORY_MAPPED asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); #else asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); #endif if (asr & CNW_ASR_WOC) return (0); DELAY(100); } if (line > 0) printf("%s: wedged at line %d\n", device_xname(&sc->sc_dev), line); return (1); } #define WAIT_WOC(sc) wait_WOC(sc, __LINE__) /* * Read a 16 bit value from the card. */ static int read16(struct cnw_softc *sc, int offset) { int hi, lo; int offs = sc->sc_memoff + offset; /* This could presumably be done more efficient with * bus_space_read_2(), but I don't know anything about the * byte sex guarantees... Besides, this is pretty cheap as * well :-) */ lo = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs); hi = bus_space_read_1(sc->sc_memt, sc->sc_memh, offs + 1); return ((hi << 8) | lo); } /* * Send a command to the card by writing it to the command buffer. */ int cnw_cmd(struct cnw_softc *sc, int cmd, int count, int arg1, int arg2) { int ptr = sc->sc_memoff + CNW_EREG_CB; if (wait_WOC(sc, 0)) { printf("%s: wedged when issuing cmd 0x%x\n", device_xname(&sc->sc_dev), cmd); /* * We'll continue anyway, as that's probably the best * thing we can do; at least the user knows there's a * problem, and can reset the interface with ifconfig * down/up. */ } bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr, cmd); if (count > 0) { bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + 1, arg1); if (count > 1) bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + 2, arg2); } bus_space_write_1(sc->sc_memt, sc->sc_memh, ptr + count + 1, CNW_CMD_EOC); return (0); } #define CNW_CMD0(sc, cmd) \ do { cnw_cmd(sc, cmd, 0, 0, 0); } while (0) #define CNW_CMD1(sc, cmd, arg1) \ do { cnw_cmd(sc, cmd, 1, arg1 , 0); } while (0) #define CNW_CMD2(sc, cmd, arg1, arg2) \ do { cnw_cmd(sc, cmd, 2, arg1, arg2); } while (0) /* ---------------------------------------------------------------- */ /* * Reset the hardware. */ void cnw_reset(struct cnw_softc *sc) { #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: resetting\n", device_xname(&sc->sc_dev)); #endif wait_WOC(sc, 0); #ifndef MEMORY_MAPPED bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, CNW_PMR_RESET); #else bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, CNW_PMR_RESET); #endif bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_WOC); #ifndef MEMORY_MAPPED bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_PMR, 0); #else bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_PMR, 0); #endif } /* * Initialize the card. */ void cnw_init(struct cnw_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; const u_int8_t rxmode = CNW_RXCONF_RXENA | CNW_RXCONF_BCAST | CNW_RXCONF_AMP; /* Reset the card */ cnw_reset(sc); /* Issue a NOP to check the card */ CNW_CMD0(sc, CNW_CMD_NOP); /* Set up receive configuration */ CNW_CMD1(sc, CNW_CMD_SRC, rxmode | ((ifp->if_flags & IFF_PROMISC) ? CNW_RXCONF_PRO : 0)); /* Set up transmit configuration */ CNW_CMD1(sc, CNW_CMD_STC, CNW_TXCONF_TXENA); /* Set domain */ CNW_CMD2(sc, CNW_CMD_SMD, sc->sc_domain, sc->sc_domain >> 8); /* Set scramble key */ CNW_CMD2(sc, CNW_CMD_SSK, sc->sc_skey, sc->sc_skey >> 8); /* Enable interrupts */ WAIT_WOC(sc); #ifndef MEMORY_MAPPED bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_IMR, CNW_IMR_IENA | CNW_IMR_RFU1); #else bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_IMR, CNW_IMR_IENA | CNW_IMR_RFU1); #endif /* Enable receiver */ CNW_CMD0(sc, CNW_CMD_ER); /* "Set the IENA bit in COR" */ WAIT_WOC(sc); #ifndef MEMORY_MAPPED bus_space_write_1(sc->sc_iot, sc->sc_ioh, CNW_REG_COR, CNW_COR_IENA | CNW_COR_LVLREQ); #else bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_COR, CNW_COR_IENA | CNW_COR_LVLREQ); #endif } /* * Enable and initialize the card. */ int cnw_enable(struct cnw_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; if ((ifp->if_flags & IFF_RUNNING) != 0) return (0); sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, cnw_intr, sc); if (sc->sc_ih == NULL) { aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt handler\n"); return (EIO); } if (pcmcia_function_enable(sc->sc_pf) != 0) { aprint_error_dev(&sc->sc_dev, "couldn't enable card\n"); return (EIO); } sc->sc_resource |= CNW_RES_PCIC; cnw_init(sc); ifp->if_flags &= ~IFF_OACTIVE; ifp->if_flags |= IFF_RUNNING; return (0); } /* * Stop and disable the card. */ void cnw_disable(struct cnw_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; if ((ifp->if_flags & IFF_RUNNING) == 0) return; pcmcia_function_disable(sc->sc_pf); sc->sc_resource &= ~CNW_RES_PCIC; pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih); ifp->if_flags &= ~IFF_RUNNING; ifp->if_timer = 0; } /* * Match the hardware we handle. */ int cnw_match(device_t parent, cfdata_t match, void *aux) { struct pcmcia_attach_args *pa = aux; if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_801) return 1; if (pa->manufacturer == PCMCIA_VENDOR_XIRCOM && pa->product == PCMCIA_PRODUCT_XIRCOM_CNW_802) return 1; return 0; } /* * Attach the card. */ void cnw_attach(struct device *parent, device_t self, void *aux) { struct cnw_softc *sc = (void *) self; struct pcmcia_attach_args *pa = aux; struct ifnet *ifp = &sc->sc_ethercom.ec_if; u_int8_t macaddr[ETHER_ADDR_LEN]; int i; bus_size_t memsize; sc->sc_resource = 0; /* Enable the card */ sc->sc_pf = pa->pf; pcmcia_function_init(sc->sc_pf, SIMPLEQ_FIRST(&sc->sc_pf->cfe_head)); if (pcmcia_function_enable(sc->sc_pf)) { aprint_error_dev(self, "function enable failed\n"); return; } sc->sc_resource |= CNW_RES_PCIC; /* Map I/O register and "memory" */ #ifndef MEMORY_MAPPED if (pcmcia_io_alloc(sc->sc_pf, 0, CNW_IO_SIZE, CNW_IO_SIZE, &sc->sc_pcioh) != 0) { aprint_error_dev(self, "can't allocate i/o space\n"); goto fail; } if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO16, &sc->sc_pcioh, &sc->sc_iowin) != 0) { aprint_error_dev(self, "can't map i/o space\n"); pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); goto fail; } sc->sc_iot = sc->sc_pcioh.iot; sc->sc_ioh = sc->sc_pcioh.ioh; sc->sc_resource |= CNW_RES_IO; #endif #ifndef MEMORY_MAPPED memsize = CNW_MEM_SIZE; #else memsize = CNW_MEM_SIZE + CNW_IOM_SIZE; #endif if (pcmcia_mem_alloc(sc->sc_pf, memsize, &sc->sc_pcmemh) != 0) { aprint_error_dev(self, "can't allocate memory\n"); goto fail; } if (pcmcia_mem_map(sc->sc_pf, PCMCIA_WIDTH_MEM8|PCMCIA_MEM_COMMON, CNW_MEM_ADDR, memsize, &sc->sc_pcmemh, &sc->sc_memoff, &sc->sc_memwin) != 0) { aprint_error_dev(self, "can't map memory\n"); pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); goto fail; } sc->sc_memt = sc->sc_pcmemh.memt; sc->sc_memh = sc->sc_pcmemh.memh; sc->sc_resource |= CNW_RES_MEM; /* Finish setup of softc */ sc->sc_domain = cnw_domain; sc->sc_skey = cnw_skey; /* Get MAC address */ cnw_reset(sc); for (i = 0; i < ETHER_ADDR_LEN; i++) macaddr[i] = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_PA + i); printf("%s: address %s\n", device_xname(&sc->sc_dev), ether_sprintf(macaddr)); /* Set up ifnet structure */ strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); ifp->if_softc = sc; ifp->if_start = cnw_start; ifp->if_ioctl = cnw_ioctl; ifp->if_watchdog = cnw_watchdog; ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX | IFF_NOTRAILERS; IFQ_SET_READY(&ifp->if_snd); /* Attach the interface */ if_attach(ifp); ether_ifattach(ifp, macaddr); sc->sc_resource |= CNW_RES_NET; ifp->if_baudrate = IF_Mbps(1); /* Disable the card now, and turn it on when the interface goes up */ pcmcia_function_disable(sc->sc_pf); sc->sc_resource &= ~CNW_RES_PCIC; return; fail: #ifndef MEMORY_MAPPED if ((sc->sc_resource & CNW_RES_IO) != 0) { pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); sc->sc_resource &= ~CNW_RES_IO; } #endif if ((sc->sc_resource & CNW_RES_PCIC) != 0) { pcmcia_function_disable(sc->sc_pf); sc->sc_resource &= ~CNW_RES_PCIC; } } /* * Start outputting on the interface. */ void cnw_start(struct ifnet *ifp) { struct cnw_softc *sc = ifp->if_softc; struct mbuf *m0; int lif; int asr; #ifdef ONE_AT_A_TIME struct timeval now; #endif #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: cnw_start\n", ifp->if_xname); if (ifp->if_flags & IFF_OACTIVE) printf("%s: cnw_start reentered\n", ifp->if_xname); #endif ifp->if_flags |= IFF_OACTIVE; for (;;) { #ifdef ONE_AT_A_TIME microtime(&now); now.tv_sec -= sc->sc_txlast.tv_sec; now.tv_usec -= sc->sc_txlast.tv_usec; if (now.tv_usec < 0) { now.tv_usec += 1000000; now.tv_sec--; } /* * Don't ship this packet out until the last * packet has left the building. * If we have not tried to send a packet for 1/5 * a second then we assume we lost an interrupt, * lets go on and send the next packet anyhow. * * I suppose we could check to see if it is okay * to put additional packets on the card (beyond * the one already waiting to be sent) but I don't * think we would get any improvement in speed as * we should have ample time to put the next packet * on while this one is going out. */ if (sc->sc_active && now.tv_sec == 0 && now.tv_usec < 200000) break; #endif /* Make sure the link integrity field is on */ WAIT_WOC(sc); lif = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_LIF); if (lif == 0) { #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: link integrity %d\n", ifp->if_xname, lif); #endif break; } /* Is there any buffer space available on the card? */ WAIT_WOC(sc); #ifndef MEMORY_MAPPED asr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); #else asr = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); #endif if (!(asr & CNW_ASR_TXBA)) { #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: no buffer space\n", ifp->if_xname); #endif break; } sc->sc_stats.nws_tx++; IFQ_DEQUEUE(&ifp->if_snd, m0); if (m0 == 0) break; bpf_mtap(ifp, m0); cnw_transmit(sc, m0); ++ifp->if_opackets; ifp->if_timer = 3; /* start watchdog timer */ microtime(&sc->sc_txlast); sc->sc_active = 1; } ifp->if_flags &= ~IFF_OACTIVE; } /* * Transmit a packet. */ void cnw_transmit(struct cnw_softc *sc, struct mbuf *m0) { int buffer, bufsize, bufoffset, bufptr, bufspace, len, mbytes, n; struct mbuf *m; u_int8_t *mptr; /* Get buffer info from card */ buffer = read16(sc, CNW_EREG_TDP); bufsize = read16(sc, CNW_EREG_TDP + 2); bufoffset = read16(sc, CNW_EREG_TDP + 4); #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: cnw_transmit b=0x%x s=%d o=0x%x\n", device_xname(&sc->sc_dev), buffer, bufsize, bufoffset); #endif /* Copy data from mbuf chain to card buffers */ bufptr = sc->sc_memoff + buffer + bufoffset; bufspace = bufsize; len = 0; for (m = m0; m; ) { mptr = mtod(m, u_int8_t *); mbytes = m->m_len; len += mbytes; while (mbytes > 0) { if (bufspace == 0) { buffer = read16(sc, buffer); bufptr = sc->sc_memoff + buffer + bufoffset; bufspace = bufsize; #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: next buffer @0x%x\n", device_xname(&sc->sc_dev), buffer); #endif } n = mbytes <= bufspace ? mbytes : bufspace; bus_space_write_region_1(sc->sc_memt, sc->sc_memh, bufptr, mptr, n); bufptr += n; bufspace -= n; mptr += n; mbytes -= n; } MFREE(m, m0); m = m0; } /* Issue transmit command */ CNW_CMD2(sc, CNW_CMD_TL, len, len >> 8); } /* * Pull a packet from the card into an mbuf chain. */ struct mbuf * cnw_read(struct cnw_softc *sc) { struct mbuf *m, *top, **mp; int totbytes, buffer, bufbytes, bufptr, mbytes, n; u_int8_t *mptr; WAIT_WOC(sc); totbytes = read16(sc, CNW_EREG_RDP); #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: recv %d bytes\n", device_xname(&sc->sc_dev), totbytes); #endif buffer = CNW_EREG_RDP + 2; bufbytes = 0; bufptr = 0; /* XXX make gcc happy */ MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == 0) return (0); m->m_pkthdr.rcvif = &sc->sc_ethercom.ec_if; m->m_pkthdr.len = totbytes; mbytes = MHLEN; top = 0; mp = ⊤ while (totbytes > 0) { if (top) { MGET(m, M_DONTWAIT, MT_DATA); if (m == 0) { m_freem(top); return (0); } mbytes = MLEN; } if (totbytes >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if ((m->m_flags & M_EXT) == 0) { m_free(m); m_freem(top); return (0); } mbytes = MCLBYTES; } if (!top) { int pad = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header); m->m_data += pad; mbytes -= pad; } mptr = mtod(m, u_int8_t *); mbytes = m->m_len = min(totbytes, mbytes); totbytes -= mbytes; while (mbytes > 0) { if (bufbytes == 0) { buffer = read16(sc, buffer); bufbytes = read16(sc, buffer + 2); bufptr = sc->sc_memoff + buffer + read16(sc, buffer + 4); #ifdef CNW_DEBUG if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) printf("%s: %d bytes @0x%x+0x%lx\n", device_xname(&sc->sc_dev), bufbytes, buffer, (u_long)(bufptr - buffer - sc->sc_memoff)); #endif } n = mbytes <= bufbytes ? mbytes : bufbytes; bus_space_read_region_1(sc->sc_memt, sc->sc_memh, bufptr, mptr, n); bufbytes -= n; bufptr += n; mbytes -= n; mptr += n; } *mp = m; mp = &m->m_next; } return (top); } /* * Handle received packets. */ void cnw_recv(struct cnw_softc *sc) { int rser; struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct mbuf *m; for (;;) { WAIT_WOC(sc); rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_RSER); if (!(rser & CNW_RSER_RXAVAIL)) return; /* Pull packet off card */ m = cnw_read(sc); /* Acknowledge packet */ CNW_CMD0(sc, CNW_CMD_SRP); /* Did we manage to get the packet from the interface? */ if (m == 0) { ++ifp->if_ierrors; return; } ++ifp->if_ipackets; bpf_mtap(ifp, m); /* Pass the packet up. */ (*ifp->if_input)(ifp, m); } } /* * Interrupt handler. */ int cnw_intr(void *arg) { struct cnw_softc *sc = arg; struct ifnet *ifp = &sc->sc_ethercom.ec_if; int ret, status, rser, tser; if ((sc->sc_ethercom.ec_if.if_flags & IFF_RUNNING) == 0 || !device_is_active(&sc->sc_dev)) return (0); ifp->if_timer = 0; /* stop watchdog timer */ ret = 0; for (;;) { WAIT_WOC(sc); #ifndef MEMORY_MAPPED status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_CCSR); #else status = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_CCSR); #endif if (!(status & 0x02)) /* No more commands, or shared IRQ */ return (ret); ret = 1; #ifndef MEMORY_MAPPED status = bus_space_read_1(sc->sc_iot, sc->sc_ioh, CNW_REG_ASR); #else status = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_IOM_OFF + CNW_REG_ASR); #endif /* Anything to receive? */ if (status & CNW_ASR_RXRDY) { sc->sc_stats.nws_rx++; cnw_recv(sc); } /* Receive error */ if (status & CNW_ASR_RXERR) { /* * I get a *lot* of spurious receive errors * (many per second), even when the interface * is quiescent, so we don't increment * if_ierrors here. */ rser = bus_space_read_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_RSER); /* RX statistics */ sc->sc_stats.nws_rxerr++; if (rser & CNW_RSER_RXBIG) sc->sc_stats.nws_rxframe++; if (rser & CNW_RSER_RXCRC) sc->sc_stats.nws_rxcrcerror++; if (rser & CNW_RSER_RXOVERRUN) sc->sc_stats.nws_rxoverrun++; if (rser & CNW_RSER_RXOVERFLOW) sc->sc_stats.nws_rxoverflow++; if (rser & CNW_RSER_RXERR) sc->sc_stats.nws_rxerrors++; if (rser & CNW_RSER_RXAVAIL) sc->sc_stats.nws_rxavail++; /* Clear error bits in RSER */ WAIT_WOC(sc); bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_RSERW, CNW_RSER_RXERR | (rser & (CNW_RSER_RXCRC | CNW_RSER_RXBIG))); /* Clear RXERR in ASR */ WAIT_WOC(sc); bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_ASCC, CNW_ASR_RXERR); } /* Transmit done */ if (status & CNW_ASR_TXDN) { tser = bus_space_read_1(sc->sc_memt, sc->sc_memh, CNW_EREG_TSER); /* TX statistics */ if (tser & CNW_TSER_TXERR) sc->sc_stats.nws_txerrors++; if (tser & CNW_TSER_TXNOAP) sc->sc_stats.nws_txlostcd++; if (tser & CNW_TSER_TXGU) sc->sc_stats.nws_txabort++; if (tser & CNW_TSER_TXOK) { sc->sc_stats.nws_txokay++; sc->sc_stats.nws_txretries[status & 0xf]++; WAIT_WOC(sc); bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_TSERW, CNW_TSER_TXOK | CNW_TSER_RTRY); } if (tser & CNW_TSER_ERROR) { ++ifp->if_oerrors; WAIT_WOC(sc); bus_space_write_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_TSERW, (tser & CNW_TSER_ERROR) | CNW_TSER_RTRY); } sc->sc_active = 0; ifp->if_flags &= ~IFF_OACTIVE; /* Continue to send packets from the queue */ cnw_start(&sc->sc_ethercom.ec_if); } } } /* * Handle device ioctls. */ int cnw_ioctl(struct ifnet *ifp, u_long cmd, void *data) { struct cnw_softc *sc = ifp->if_softc; struct ifaddr *ifa = (struct ifaddr *)data; struct ifreq *ifr = (struct ifreq *)data; int s, error = 0; struct lwp *l = curlwp; /*XXX*/ switch (cmd) { case SIOCINITIFADDR: case SIOCSIFFLAGS: case SIOCADDMULTI: case SIOCDELMULTI: case SIOCGCNWDOMAIN: case SIOCGCNWSTATS: break; case SIOCSCNWDOMAIN: case SIOCSCNWKEY: error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_INTERFACE, KAUTH_REQ_NETWORK_INTERFACE_SETPRIV, ifp, KAUTH_ARG(cmd), NULL); if (error) return (error); break; case SIOCGCNWSTATUS: error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_INTERFACE, KAUTH_REQ_NETWORK_INTERFACE_GETPRIV, ifp, KAUTH_ARG(cmd), NULL); if (error) return (error); break; default: return (EINVAL); } s = splnet(); switch (cmd) { case SIOCINITIFADDR: if (!(ifp->if_flags & IFF_RUNNING) && (error = cnw_enable(sc)) != 0) break; ifp->if_flags |= IFF_UP; cnw_init(sc); switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: arp_ifinit(&sc->sc_ethercom.ec_if, ifa); break; #endif default: break; } break; case SIOCSIFFLAGS: if ((error = ifioctl_common(ifp, cmd, data)) != 0) break; /* XXX re-use ether_ioctl() */ switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { case IFF_RUNNING: /* * The interface is marked down and it is running, so * stop it. */ cnw_disable(sc); break; case IFF_UP: /* * The interface is marked up and it is stopped, so * start it. */ error = cnw_enable(sc); break; default: /* IFF_PROMISC may be changed */ cnw_init(sc); break; } break; case SIOCADDMULTI: case SIOCDELMULTI: /* Update our multicast list. */ if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) cnw_init(sc); error = 0; } break; case SIOCGCNWDOMAIN: ifr->ifr_domain = sc->sc_domain; break; case SIOCSCNWDOMAIN: error = cnw_setdomain(sc, ifr->ifr_domain); break; case SIOCSCNWKEY: error = cnw_setkey(sc, ifr->ifr_key); break; case SIOCGCNWSTATUS: if ((ifp->if_flags & IFF_RUNNING) == 0) break; bus_space_read_region_1(sc->sc_memt, sc->sc_memh, sc->sc_memoff + CNW_EREG_CB, ((struct cnwstatus *)data)->data, sizeof(((struct cnwstatus *)data)->data)); break; case SIOCGCNWSTATS: memcpy((void *)&(((struct cnwistats *)data)->stats), (void *)&sc->sc_stats, sizeof(struct cnwstats)); break; default: error = ether_ioctl(ifp, cmd, data); break; } splx(s); return (error); } /* * Device timeout/watchdog routine. Entered if the device neglects to * generate an interrupt after a transmit has been started on it. */ void cnw_watchdog(struct ifnet *ifp) { struct cnw_softc *sc = ifp->if_softc; printf("%s: device timeout; card reset\n", device_xname(&sc->sc_dev)); ++ifp->if_oerrors; cnw_init(sc); } int cnw_setdomain(struct cnw_softc *sc, int domain) { int s; if (domain & ~0x1ff) return EINVAL; s = splnet(); CNW_CMD2(sc, CNW_CMD_SMD, domain, domain >> 8); splx(s); sc->sc_domain = domain; return 0; } int cnw_setkey(struct cnw_softc *sc, int key) { int s; if (key & ~0xffff) return EINVAL; s = splnet(); CNW_CMD2(sc, CNW_CMD_SSK, key, key >> 8); splx(s); sc->sc_skey = key; return 0; } int cnw_activate(device_t self, enum devact act) { struct cnw_softc *sc = (struct cnw_softc *)self; switch (act) { case DVACT_DEACTIVATE: if_deactivate(&sc->sc_ethercom.ec_if); return 0; default: return EOPNOTSUPP; } } int cnw_detach(device_t self, int flags) { struct cnw_softc *sc = (struct cnw_softc *)self; struct ifnet *ifp = &sc->sc_ethercom.ec_if; /* cnw_disable() checks IFF_RUNNING */ cnw_disable(sc); if ((sc->sc_resource & CNW_RES_NET) != 0) { ether_ifdetach(ifp); if_detach(ifp); } #ifndef MEMORY_MAPPED /* unmap and free our i/o windows */ if ((sc->sc_resource & CNW_RES_IO) != 0) { pcmcia_io_unmap(sc->sc_pf, sc->sc_iowin); pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh); } #endif /* unmap and free our memory windows */ if ((sc->sc_resource & CNW_RES_MEM) != 0) { pcmcia_mem_unmap(sc->sc_pf, sc->sc_memwin); pcmcia_mem_free(sc->sc_pf, &sc->sc_pcmemh); } return (0); }