diff options
Diffstat (limited to 'sys/i386/isa/if_wi.c')
| -rw-r--r-- | sys/i386/isa/if_wi.c | 1769 |
1 files changed, 0 insertions, 1769 deletions
diff --git a/sys/i386/isa/if_wi.c b/sys/i386/isa/if_wi.c deleted file mode 100644 index 3b07877..0000000 --- a/sys/i386/isa/if_wi.c +++ /dev/null @@ -1,1769 +0,0 @@ -/* - * Copyright (c) 1997, 1998, 1999 - * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. - * - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Bill Paul. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD - * 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. - * - * $FreeBSD$ - */ - -/* - * Lucent WaveLAN/IEEE 802.11 PCMCIA driver for FreeBSD. - * - * Written by Bill Paul <wpaul@ctr.columbia.edu> - * Electrical Engineering Department - * Columbia University, New York City - */ - -/* - * The WaveLAN/IEEE adapter is the second generation of the WaveLAN - * from Lucent. Unlike the older cards, the new ones are programmed - * entirely via a firmware-driven controller called the Hermes. - * Unfortunately, Lucent will not release the Hermes programming manual - * without an NDA (if at all). What they do release is an API library - * called the HCF (Hardware Control Functions) which is supposed to - * do the device-specific operations of a device driver for you. The - * publically available version of the HCF library (the 'HCF Light') is - * a) extremely gross, b) lacks certain features, particularly support - * for 802.11 frames, and c) is contaminated by the GNU Public License. - * - * This driver does not use the HCF or HCF Light at all. Instead, it - * programs the Hermes controller directly, using information gleaned - * from the HCF Light code and corresponding documentation. - * - * This driver supports both the PCMCIA and ISA versions of the - * WaveLAN/IEEE cards. Note however that the ISA card isn't really - * anything of the sort: it's actually a PCMCIA bridge adapter - * that fits into an ISA slot, into which a PCMCIA WaveLAN card is - * inserted. Consequently, you need to use the pccard support for - * both the ISA and PCMCIA adapters. - */ - -#define WI_HERMES_AUTOINC_WAR /* Work around data write autoinc bug. */ -#define WI_HERMES_STATS_WAR /* Work around stats counter bug. */ -#define WICACHE /* turn on signal strength cache code */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/sockio.h> -#include <sys/mbuf.h> -#include <sys/kernel.h> -#include <sys/socket.h> -#include <sys/module.h> -#include <sys/bus.h> -#include <sys/syslog.h> -#include <sys/sysctl.h> - -#include <machine/bus.h> -#include <machine/resource.h> -#include <machine/md_var.h> -#include <machine/bus_pio.h> -#include <sys/rman.h> - -#include <net/if.h> -#include <net/if_arp.h> -#include <net/ethernet.h> -#include <net/if_dl.h> -#include <net/if_media.h> -#include <net/if_types.h> - -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/in_var.h> -#include <netinet/ip.h> -#include <netinet/if_ether.h> - -#include <net/bpf.h> - -#include <machine/if_wavelan_ieee.h> -#include <i386/isa/if_wireg.h> - -#if !defined(lint) -static const char rcsid[] = - "$FreeBSD$"; -#endif - -#ifdef foo -static u_int8_t wi_mcast_addr[6] = { 0x01, 0x60, 0x1D, 0x00, 0x01, 0x00 }; -#endif - -static void wi_intr __P((void *)); -static void wi_reset __P((struct wi_softc *)); -static int wi_ioctl __P((struct ifnet *, u_long, caddr_t)); -static void wi_init __P((void *)); -static void wi_start __P((struct ifnet *)); -static void wi_stop __P((struct wi_softc *)); -static void wi_watchdog __P((struct ifnet *)); -static void wi_rxeof __P((struct wi_softc *)); -static void wi_txeof __P((struct wi_softc *, int)); -static void wi_update_stats __P((struct wi_softc *)); -static void wi_setmulti __P((struct wi_softc *)); - -static int wi_cmd __P((struct wi_softc *, int, int)); -static int wi_read_record __P((struct wi_softc *, struct wi_ltv_gen *)); -static int wi_write_record __P((struct wi_softc *, struct wi_ltv_gen *)); -static int wi_read_data __P((struct wi_softc *, int, - int, caddr_t, int)); -static int wi_write_data __P((struct wi_softc *, int, - int, caddr_t, int)); -static int wi_seek __P((struct wi_softc *, int, int, int)); -static int wi_alloc_nicmem __P((struct wi_softc *, int, int *)); -static void wi_inquire __P((void *)); -static void wi_setdef __P((struct wi_softc *, struct wi_req *)); -static int wi_mgmt_xmit __P((struct wi_softc *, caddr_t, int)); - -#ifdef WICACHE -static -void wi_cache_store __P((struct wi_softc *, struct ether_header *, - struct mbuf *, unsigned short)); -#endif - -static int wi_pccard_probe __P((device_t)); -static int wi_pccard_attach __P((device_t)); -static int wi_pccard_detach __P((device_t)); -static void wi_shutdown __P((device_t)); - -static int wi_alloc __P((device_t)); -static void wi_free __P((device_t)); - -static device_method_t wi_pccard_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, wi_pccard_probe), - DEVMETHOD(device_attach, wi_pccard_attach), - DEVMETHOD(device_detach, wi_pccard_detach), - DEVMETHOD(device_shutdown, wi_shutdown), - - { 0, 0 } -}; - -static driver_t wi_pccard_driver = { - "wi", - wi_pccard_methods, - sizeof(struct wi_softc) -}; - -static devclass_t wi_pccard_devclass; - -DRIVER_MODULE(if_wi, pccard, wi_pccard_driver, wi_pccard_devclass, 0, 0); - -static int wi_pccard_probe(dev) - device_t dev; -{ - struct wi_softc *sc; - int error; - - sc = device_get_softc(dev); - sc->wi_gone = 0; - - error = wi_alloc(dev); - if (error) - return (error); - - device_set_desc(dev, "WaveLAN/IEEE 802.11"); - wi_free(dev); - - /* Make sure interrupts are disabled. */ - CSR_WRITE_2(sc, WI_INT_EN, 0); - CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); - - return (0); -} - -static int wi_pccard_detach(dev) - device_t dev; -{ - struct wi_softc *sc; - struct ifnet *ifp; - - sc = device_get_softc(dev); - WI_LOCK(sc); - ifp = &sc->arpcom.ac_if; - - if (sc->wi_gone) { - device_printf(dev, "already unloaded\n"); - WI_UNLOCK(sc); - return(ENODEV); - } - - wi_stop(sc); - - ether_ifdetach(ifp, ETHER_BPF_SUPPORTED); - bus_teardown_intr(dev, sc->irq, sc->wi_intrhand); - wi_free(dev); - sc->wi_gone = 1; - - device_printf(dev, "unload\n"); - WI_UNLOCK(sc); - mtx_destroy(&sc->wi_mtx); - - return(0); -} - -static int wi_pccard_attach(device_t dev) -{ - struct wi_softc *sc; - struct wi_ltv_macaddr mac; - struct wi_ltv_gen gen; - struct ifnet *ifp; - int error; - u_int32_t flags; - - sc = device_get_softc(dev); - ifp = &sc->arpcom.ac_if; - - /* - * XXX: quick hack to support Prism II chip. - * Currently, we need to set a flags in pccard.conf to specify - * which type chip is used. - * - * We need to replace this code in a future. - * It is better to use CIS than using a flag. - */ - flags = device_get_flags(dev); -#define WI_FLAGS_PRISM2 0x10000 - if (flags & WI_FLAGS_PRISM2) { - sc->wi_prism2 = 1; - if (bootverbose) { - device_printf(dev, "found PrismII chip\n"); - } - } - else { - sc->wi_prism2 = 0; - if (bootverbose) { - device_printf(dev, "found Lucent chip\n"); - } - } - - error = wi_alloc(dev); - if (error) { - device_printf(dev, "wi_alloc() failed! (%d)\n", error); - return (error); - } - - error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, - wi_intr, sc, &sc->wi_intrhand); - - if (error) { - device_printf(dev, "bus_setup_intr() failed! (%d)\n", error); - wi_free(dev); - return (error); - } - - mtx_init(&sc->wi_mtx, device_get_nameunit(dev), MTX_DEF); - WI_LOCK(sc); - - /* Reset the NIC. */ - wi_reset(sc); - - /* Read the station address. */ - mac.wi_type = WI_RID_MAC_NODE; - mac.wi_len = 4; - wi_read_record(sc, (struct wi_ltv_gen *)&mac); - bcopy((char *)&mac.wi_mac_addr, - (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); - - device_printf(dev, "Ethernet address: %6D\n", - sc->arpcom.ac_enaddr, ":"); - - ifp->if_softc = sc; - ifp->if_unit = sc->wi_unit; - ifp->if_name = "wi"; - ifp->if_mtu = ETHERMTU; - ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; - ifp->if_ioctl = wi_ioctl; - ifp->if_output = ether_output; - ifp->if_start = wi_start; - ifp->if_watchdog = wi_watchdog; - ifp->if_init = wi_init; - ifp->if_baudrate = 10000000; - ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; - - bzero(sc->wi_node_name, sizeof(sc->wi_node_name)); - bcopy(WI_DEFAULT_NODENAME, sc->wi_node_name, - sizeof(WI_DEFAULT_NODENAME) - 1); - - bzero(sc->wi_net_name, sizeof(sc->wi_net_name)); - bcopy(WI_DEFAULT_NETNAME, sc->wi_net_name, - sizeof(WI_DEFAULT_NETNAME) - 1); - - bzero(sc->wi_ibss_name, sizeof(sc->wi_ibss_name)); - bcopy(WI_DEFAULT_IBSS, sc->wi_ibss_name, - sizeof(WI_DEFAULT_IBSS) - 1); - - sc->wi_portnum = WI_DEFAULT_PORT; - sc->wi_ptype = WI_PORTTYPE_ADHOC; - sc->wi_ap_density = WI_DEFAULT_AP_DENSITY; - sc->wi_rts_thresh = WI_DEFAULT_RTS_THRESH; - sc->wi_tx_rate = WI_DEFAULT_TX_RATE; - sc->wi_max_data_len = WI_DEFAULT_DATALEN; - sc->wi_create_ibss = WI_DEFAULT_CREATE_IBSS; - sc->wi_pm_enabled = WI_DEFAULT_PM_ENABLED; - sc->wi_max_sleep = WI_DEFAULT_MAX_SLEEP; - - /* - * Read the default channel from the NIC. This may vary - * depending on the country where the NIC was purchased, so - * we can't hard-code a default and expect it to work for - * everyone. - */ - gen.wi_type = WI_RID_OWN_CHNL; - gen.wi_len = 2; - wi_read_record(sc, &gen); - sc->wi_channel = gen.wi_val; - - /* - * Find out if we support WEP on this card. - */ - gen.wi_type = WI_RID_WEP_AVAIL; - gen.wi_len = 2; - wi_read_record(sc, &gen); - sc->wi_has_wep = gen.wi_val; - - if (bootverbose) { - device_printf(sc->dev, - __FUNCTION__ ":wi_has_wep = %d\n", - sc->wi_has_wep); - } - - bzero((char *)&sc->wi_stats, sizeof(sc->wi_stats)); - - wi_init(sc); - wi_stop(sc); - - /* - * Call MI attach routine. - */ - ether_ifattach(ifp, ETHER_BPF_SUPPORTED); - callout_handle_init(&sc->wi_stat_ch); - WI_UNLOCK(sc); - - return(0); -} - -static void wi_rxeof(sc) - struct wi_softc *sc; -{ - struct ifnet *ifp; - struct ether_header *eh; - struct wi_frame rx_frame; - struct mbuf *m; - int id; - - ifp = &sc->arpcom.ac_if; - - id = CSR_READ_2(sc, WI_RX_FID); - - /* First read in the frame header */ - if (wi_read_data(sc, id, 0, (caddr_t)&rx_frame, sizeof(rx_frame))) { - ifp->if_ierrors++; - return; - } - - if (rx_frame.wi_status & WI_STAT_ERRSTAT) { - ifp->if_ierrors++; - return; - } - - MGETHDR(m, M_DONTWAIT, MT_DATA); - if (m == NULL) { - ifp->if_ierrors++; - return; - } - MCLGET(m, M_DONTWAIT); - if (!(m->m_flags & M_EXT)) { - m_freem(m); - ifp->if_ierrors++; - return; - } - - eh = mtod(m, struct ether_header *); - m->m_pkthdr.rcvif = ifp; - - if (rx_frame.wi_status == WI_STAT_1042 || - rx_frame.wi_status == WI_STAT_TUNNEL || - rx_frame.wi_status == WI_STAT_WMP_MSG) { - if((rx_frame.wi_dat_len + WI_SNAPHDR_LEN) > MCLBYTES) { - device_printf(sc->dev, "oversized packet received " - "(wi_dat_len=%d, wi_status=0x%x)\n", - rx_frame.wi_dat_len, rx_frame.wi_status); - m_freem(m); - ifp->if_ierrors++; - return; - } - m->m_pkthdr.len = m->m_len = - rx_frame.wi_dat_len + WI_SNAPHDR_LEN; - - bcopy((char *)&rx_frame.wi_addr1, - (char *)&eh->ether_dhost, ETHER_ADDR_LEN); - if (sc->wi_ptype == WI_PORTTYPE_ADHOC) { - bcopy((char *)&rx_frame.wi_addr2, - (char *)&eh->ether_shost, ETHER_ADDR_LEN); - } else { - bcopy((char *)&rx_frame.wi_addr3, - (char *)&eh->ether_shost, ETHER_ADDR_LEN); - } - bcopy((char *)&rx_frame.wi_type, - (char *)&eh->ether_type, sizeof(u_int16_t)); - - if (wi_read_data(sc, id, WI_802_11_OFFSET, - mtod(m, caddr_t) + sizeof(struct ether_header), - m->m_len + 2)) { - m_freem(m); - ifp->if_ierrors++; - return; - } - } else { - if((rx_frame.wi_dat_len + - sizeof(struct ether_header)) > MCLBYTES) { - device_printf(sc->dev, "oversized packet received " - "(wi_dat_len=%d, wi_status=0x%x)\n", - rx_frame.wi_dat_len, rx_frame.wi_status); - m_freem(m); - ifp->if_ierrors++; - return; - } - m->m_pkthdr.len = m->m_len = - rx_frame.wi_dat_len + sizeof(struct ether_header); - - if (wi_read_data(sc, id, WI_802_3_OFFSET, - mtod(m, caddr_t), m->m_len + 2)) { - m_freem(m); - ifp->if_ierrors++; - return; - } - } - - ifp->if_ipackets++; - - /* Receive packet. */ - m_adj(m, sizeof(struct ether_header)); -#ifdef WICACHE - wi_cache_store(sc, eh, m, rx_frame.wi_q_info); -#endif - ether_input(ifp, eh, m); -} - -static void wi_txeof(sc, status) - struct wi_softc *sc; - int status; -{ - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - ifp->if_timer = 0; - ifp->if_flags &= ~IFF_OACTIVE; - - if (status & WI_EV_TX_EXC) - ifp->if_oerrors++; - else - ifp->if_opackets++; - - return; -} - -void wi_inquire(xsc) - void *xsc; -{ - struct wi_softc *sc; - struct ifnet *ifp; - - sc = xsc; - ifp = &sc->arpcom.ac_if; - - sc->wi_stat_ch = timeout(wi_inquire, sc, hz * 60); - - /* Don't do this while we're transmitting */ - if (ifp->if_flags & IFF_OACTIVE) - return; - - wi_cmd(sc, WI_CMD_INQUIRE, WI_INFO_COUNTERS); - - return; -} - -void wi_update_stats(sc) - struct wi_softc *sc; -{ - struct wi_ltv_gen gen; - u_int16_t id; - struct ifnet *ifp; - u_int32_t *ptr; - int i; - u_int16_t t; - - ifp = &sc->arpcom.ac_if; - - id = CSR_READ_2(sc, WI_INFO_FID); - - wi_read_data(sc, id, 0, (char *)&gen, 4); - - if (gen.wi_type != WI_INFO_COUNTERS || - gen.wi_len > (sizeof(sc->wi_stats) / 4) + 1) - return; - - ptr = (u_int32_t *)&sc->wi_stats; - - for (i = 0; i < gen.wi_len - 1; i++) { - t = CSR_READ_2(sc, WI_DATA1); -#ifdef WI_HERMES_STATS_WAR - if (t > 0xF000) - t = ~t & 0xFFFF; -#endif - ptr[i] += t; - } - - ifp->if_collisions = sc->wi_stats.wi_tx_single_retries + - sc->wi_stats.wi_tx_multi_retries + - sc->wi_stats.wi_tx_retry_limit; - - return; -} - -static void wi_intr(xsc) - void *xsc; -{ - struct wi_softc *sc = xsc; - struct ifnet *ifp; - u_int16_t status; - - WI_LOCK(sc); - - ifp = &sc->arpcom.ac_if; - - if (!(ifp->if_flags & IFF_UP)) { - CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); - CSR_WRITE_2(sc, WI_INT_EN, 0); - WI_UNLOCK(sc); - return; - } - - /* Disable interrupts. */ - CSR_WRITE_2(sc, WI_INT_EN, 0); - - status = CSR_READ_2(sc, WI_EVENT_STAT); - CSR_WRITE_2(sc, WI_EVENT_ACK, ~WI_INTRS); - - if (status & WI_EV_RX) { - wi_rxeof(sc); - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_RX); - } - - if (status & WI_EV_TX) { - wi_txeof(sc, status); - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_TX); - } - - if (status & WI_EV_ALLOC) { - int id; - id = CSR_READ_2(sc, WI_ALLOC_FID); - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_ALLOC); - if (id == sc->wi_tx_data_id) - wi_txeof(sc, status); - } - - if (status & WI_EV_INFO) { - wi_update_stats(sc); - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_INFO); - } - - if (status & WI_EV_TX_EXC) { - wi_txeof(sc, status); - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_TX_EXC); - } - - if (status & WI_EV_INFO_DROP) { - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_INFO_DROP); - } - - /* Re-enable interrupts. */ - CSR_WRITE_2(sc, WI_INT_EN, WI_INTRS); - - if (ifp->if_snd.ifq_head != NULL) - wi_start(ifp); - - WI_UNLOCK(sc); - - return; -} - -static int wi_cmd(sc, cmd, val) - struct wi_softc *sc; - int cmd; - int val; -{ - int i, s = 0; - - /* wait for the busy bit to clear */ - for (i = 0; i < WI_TIMEOUT; i++) { - if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY)) { - break; - } - DELAY(10*1000); /* 10 m sec */ - } - - if (i == WI_TIMEOUT) { - return(ETIMEDOUT); - } - - CSR_WRITE_2(sc, WI_PARAM0, val); - CSR_WRITE_2(sc, WI_PARAM1, 0); - CSR_WRITE_2(sc, WI_PARAM2, 0); - CSR_WRITE_2(sc, WI_COMMAND, cmd); - - for (i = 0; i < WI_TIMEOUT; i++) { - /* - * Wait for 'command complete' bit to be - * set in the event status register. - */ - s = CSR_READ_2(sc, WI_EVENT_STAT) & WI_EV_CMD; - if (s) { - /* Ack the event and read result code. */ - s = CSR_READ_2(sc, WI_STATUS); - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_CMD); -#ifdef foo - if ((s & WI_CMD_CODE_MASK) != (cmd & WI_CMD_CODE_MASK)) - return(EIO); -#endif - if (s & WI_STAT_CMD_RESULT) - return(EIO); - break; - } - } - - if (i == WI_TIMEOUT) - return(ETIMEDOUT); - - return(0); -} - -static void wi_reset(sc) - struct wi_softc *sc; -{ -#ifdef foo - wi_cmd(sc, WI_CMD_INI, 0); - DELAY(100000); - wi_cmd(sc, WI_CMD_INI, 0); -#endif - DELAY(100000); - if (wi_cmd(sc, WI_CMD_INI, 0)) - device_printf(sc->dev, "init failed\n"); - CSR_WRITE_2(sc, WI_INT_EN, 0); - CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); - - /* Calibrate timer. */ - WI_SETVAL(WI_RID_TICK_TIME, 8); - - return; -} - -/* - * Read an LTV record from the NIC. - */ -static int wi_read_record(sc, ltv) - struct wi_softc *sc; - struct wi_ltv_gen *ltv; -{ - u_int16_t *ptr; - int i, len, code; - struct wi_ltv_gen *oltv, p2ltv; - - oltv = ltv; - if (sc->wi_prism2) { - switch (ltv->wi_type) { - case WI_RID_ENCRYPTION: - p2ltv.wi_type = WI_RID_P2_ENCRYPTION; - p2ltv.wi_len = 2; - ltv = &p2ltv; - break; - case WI_RID_TX_CRYPT_KEY: - p2ltv.wi_type = WI_RID_P2_TX_CRYPT_KEY; - p2ltv.wi_len = 2; - ltv = &p2ltv; - break; - } - } - - /* Tell the NIC to enter record read mode. */ - if (wi_cmd(sc, WI_CMD_ACCESS|WI_ACCESS_READ, ltv->wi_type)) - return(EIO); - - /* Seek to the record. */ - if (wi_seek(sc, ltv->wi_type, 0, WI_BAP1)) - return(EIO); - - /* - * Read the length and record type and make sure they - * match what we expect (this verifies that we have enough - * room to hold all of the returned data). - */ - len = CSR_READ_2(sc, WI_DATA1); - if (len > ltv->wi_len) - return(ENOSPC); - code = CSR_READ_2(sc, WI_DATA1); - if (code != ltv->wi_type) - return(EIO); - - ltv->wi_len = len; - ltv->wi_type = code; - - /* Now read the data. */ - ptr = <v->wi_val; - for (i = 0; i < ltv->wi_len - 1; i++) - ptr[i] = CSR_READ_2(sc, WI_DATA1); - - if (sc->wi_prism2) { - switch (oltv->wi_type) { - case WI_RID_TX_RATE: - case WI_RID_CUR_TX_RATE: - switch (ltv->wi_val) { - case 1: oltv->wi_val = 1; break; - case 2: oltv->wi_val = 2; break; - case 3: oltv->wi_val = 6; break; - case 4: oltv->wi_val = 5; break; - case 7: oltv->wi_val = 7; break; - case 8: oltv->wi_val = 11; break; - case 15: oltv->wi_val = 3; break; - default: oltv->wi_val = 0x100 + ltv->wi_val; break; - } - break; - case WI_RID_ENCRYPTION: - oltv->wi_len = 2; - if (ltv->wi_val & 0x01) - oltv->wi_val = 1; - else - oltv->wi_val = 0; - break; - case WI_RID_TX_CRYPT_KEY: - oltv->wi_len = 2; - oltv->wi_val = ltv->wi_val; - break; - } - } - - return(0); -} - -/* - * Same as read, except we inject data instead of reading it. - */ -static int wi_write_record(sc, ltv) - struct wi_softc *sc; - struct wi_ltv_gen *ltv; -{ - u_int16_t *ptr; - int i; - struct wi_ltv_gen p2ltv; - - if (sc->wi_prism2) { - switch (ltv->wi_type) { - case WI_RID_TX_RATE: - p2ltv.wi_type = WI_RID_TX_RATE; - p2ltv.wi_len = 2; - switch (ltv->wi_val) { - case 1: p2ltv.wi_val = 1; break; - case 2: p2ltv.wi_val = 2; break; - case 3: p2ltv.wi_val = 15; break; - case 5: p2ltv.wi_val = 4; break; - case 6: p2ltv.wi_val = 3; break; - case 7: p2ltv.wi_val = 7; break; - case 11: p2ltv.wi_val = 8; break; - default: return EINVAL; - } - ltv = &p2ltv; - break; - case WI_RID_ENCRYPTION: - p2ltv.wi_type = WI_RID_P2_ENCRYPTION; - p2ltv.wi_len = 2; - if (ltv->wi_val) - p2ltv.wi_val = 0x03; - else - p2ltv.wi_val = 0x90; - ltv = &p2ltv; - break; - case WI_RID_TX_CRYPT_KEY: - p2ltv.wi_type = WI_RID_P2_TX_CRYPT_KEY; - p2ltv.wi_len = 2; - p2ltv.wi_val = ltv->wi_val; - ltv = &p2ltv; - break; - case WI_RID_DEFLT_CRYPT_KEYS: - { - int error; - struct wi_ltv_str ws; - struct wi_ltv_keys *wk = (struct wi_ltv_keys *)ltv; - for (i = 0; i < 4; i++) { - ws.wi_len = 4; - ws.wi_type = WI_RID_P2_CRYPT_KEY0 + i; - memcpy(ws.wi_str, &wk->wi_keys[i].wi_keydat, 5); - ws.wi_str[5] = '\0'; - error = wi_write_record(sc, - (struct wi_ltv_gen *)&ws); - if (error) - return error; - } - return 0; - } - } - } - - if (wi_seek(sc, ltv->wi_type, 0, WI_BAP1)) - return(EIO); - - CSR_WRITE_2(sc, WI_DATA1, ltv->wi_len); - CSR_WRITE_2(sc, WI_DATA1, ltv->wi_type); - - ptr = <v->wi_val; - for (i = 0; i < ltv->wi_len - 1; i++) - CSR_WRITE_2(sc, WI_DATA1, ptr[i]); - - if (wi_cmd(sc, WI_CMD_ACCESS|WI_ACCESS_WRITE, ltv->wi_type)) - return(EIO); - - return(0); -} - -static int wi_seek(sc, id, off, chan) - struct wi_softc *sc; - int id, off, chan; -{ - int i; - int selreg, offreg; - - switch (chan) { - case WI_BAP0: - selreg = WI_SEL0; - offreg = WI_OFF0; - break; - case WI_BAP1: - selreg = WI_SEL1; - offreg = WI_OFF1; - break; - default: - device_printf(sc->dev, "invalid data path: %x\n", chan); - return(EIO); - } - - CSR_WRITE_2(sc, selreg, id); - CSR_WRITE_2(sc, offreg, off); - - for (i = 0; i < WI_TIMEOUT; i++) { - if (!(CSR_READ_2(sc, offreg) & (WI_OFF_BUSY|WI_OFF_ERR))) - break; - } - - if (i == WI_TIMEOUT) - return(ETIMEDOUT); - - return(0); -} - -static int wi_read_data(sc, id, off, buf, len) - struct wi_softc *sc; - int id, off; - caddr_t buf; - int len; -{ - int i; - u_int16_t *ptr; - - if (wi_seek(sc, id, off, WI_BAP1)) - return(EIO); - - ptr = (u_int16_t *)buf; - for (i = 0; i < len / 2; i++) - ptr[i] = CSR_READ_2(sc, WI_DATA1); - - return(0); -} - -/* - * According to the comments in the HCF Light code, there is a bug in - * the Hermes (or possibly in certain Hermes firmware revisions) where - * the chip's internal autoincrement counter gets thrown off during - * data writes: the autoincrement is missed, causing one data word to - * be overwritten and subsequent words to be written to the wrong memory - * locations. The end result is that we could end up transmitting bogus - * frames without realizing it. The workaround for this is to write a - * couple of extra guard words after the end of the transfer, then - * attempt to read then back. If we fail to locate the guard words where - * we expect them, we preform the transfer over again. - */ -static int wi_write_data(sc, id, off, buf, len) - struct wi_softc *sc; - int id, off; - caddr_t buf; - int len; -{ - int i; - u_int16_t *ptr; - -#ifdef WI_HERMES_AUTOINC_WAR -again: -#endif - - if (wi_seek(sc, id, off, WI_BAP0)) - return(EIO); - - ptr = (u_int16_t *)buf; - for (i = 0; i < (len / 2); i++) - CSR_WRITE_2(sc, WI_DATA0, ptr[i]); - -#ifdef WI_HERMES_AUTOINC_WAR - CSR_WRITE_2(sc, WI_DATA0, 0x1234); - CSR_WRITE_2(sc, WI_DATA0, 0x5678); - - if (wi_seek(sc, id, off + len, WI_BAP0)) - return(EIO); - - if (CSR_READ_2(sc, WI_DATA0) != 0x1234 || - CSR_READ_2(sc, WI_DATA0) != 0x5678) - goto again; -#endif - - return(0); -} - -/* - * Allocate a region of memory inside the NIC and zero - * it out. - */ -static int wi_alloc_nicmem(sc, len, id) - struct wi_softc *sc; - int len; - int *id; -{ - int i; - - if (wi_cmd(sc, WI_CMD_ALLOC_MEM, len)) { - device_printf(sc->dev, "failed to allocate %d bytes on NIC\n", len); - return(ENOMEM); - } - - for (i = 0; i < WI_TIMEOUT; i++) { - if (CSR_READ_2(sc, WI_EVENT_STAT) & WI_EV_ALLOC) - break; - } - - if (i == WI_TIMEOUT) - return(ETIMEDOUT); - - CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_ALLOC); - *id = CSR_READ_2(sc, WI_ALLOC_FID); - - if (wi_seek(sc, *id, 0, WI_BAP0)) - return(EIO); - - for (i = 0; i < len / 2; i++) - CSR_WRITE_2(sc, WI_DATA0, 0); - - return(0); -} - -static void wi_setmulti(sc) - struct wi_softc *sc; -{ - struct ifnet *ifp; - int i = 0; - struct ifmultiaddr *ifma; - struct wi_ltv_mcast mcast; - - ifp = &sc->arpcom.ac_if; - - bzero((char *)&mcast, sizeof(mcast)); - - mcast.wi_type = WI_RID_MCAST; - mcast.wi_len = (3 * 16) + 1; - - if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { - wi_write_record(sc, (struct wi_ltv_gen *)&mcast); - return; - } - - for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL; - ifma = ifma->ifma_link.le_next) { - if (ifma->ifma_addr->sa_family != AF_LINK) - continue; - if (i < 16) { - bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), - (char *)&mcast.wi_mcast[i], ETHER_ADDR_LEN); - i++; - } else { - bzero((char *)&mcast, sizeof(mcast)); - break; - } - } - - mcast.wi_len = (i * 3) + 1; - wi_write_record(sc, (struct wi_ltv_gen *)&mcast); - - return; -} - -static void wi_setdef(sc, wreq) - struct wi_softc *sc; - struct wi_req *wreq; -{ - struct sockaddr_dl *sdl; - struct ifaddr *ifa; - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - switch(wreq->wi_type) { - case WI_RID_MAC_NODE: - ifa = ifnet_addrs[ifp->if_index - 1]; - sdl = (struct sockaddr_dl *)ifa->ifa_addr; - bcopy((char *)&wreq->wi_val, (char *)&sc->arpcom.ac_enaddr, - ETHER_ADDR_LEN); - bcopy((char *)&wreq->wi_val, LLADDR(sdl), ETHER_ADDR_LEN); - break; - case WI_RID_PORTTYPE: - sc->wi_ptype = wreq->wi_val[0]; - break; - case WI_RID_TX_RATE: - sc->wi_tx_rate = wreq->wi_val[0]; - break; - case WI_RID_MAX_DATALEN: - sc->wi_max_data_len = wreq->wi_val[0]; - break; - case WI_RID_RTS_THRESH: - sc->wi_rts_thresh = wreq->wi_val[0]; - break; - case WI_RID_SYSTEM_SCALE: - sc->wi_ap_density = wreq->wi_val[0]; - break; - case WI_RID_CREATE_IBSS: - sc->wi_create_ibss = wreq->wi_val[0]; - break; - case WI_RID_OWN_CHNL: - sc->wi_channel = wreq->wi_val[0]; - break; - case WI_RID_NODENAME: - bzero(sc->wi_node_name, sizeof(sc->wi_node_name)); - bcopy((char *)&wreq->wi_val[1], sc->wi_node_name, 30); - break; - case WI_RID_DESIRED_SSID: - bzero(sc->wi_net_name, sizeof(sc->wi_net_name)); - bcopy((char *)&wreq->wi_val[1], sc->wi_net_name, 30); - break; - case WI_RID_OWN_SSID: - bzero(sc->wi_ibss_name, sizeof(sc->wi_ibss_name)); - bcopy((char *)&wreq->wi_val[1], sc->wi_ibss_name, 30); - break; - case WI_RID_PM_ENABLED: - sc->wi_pm_enabled = wreq->wi_val[0]; - break; - case WI_RID_MAX_SLEEP: - sc->wi_max_sleep = wreq->wi_val[0]; - break; - case WI_RID_ENCRYPTION: - sc->wi_use_wep = wreq->wi_val[0]; - break; - case WI_RID_TX_CRYPT_KEY: - sc->wi_tx_key = wreq->wi_val[0]; - break; - case WI_RID_DEFLT_CRYPT_KEYS: - bcopy((char *)wreq, (char *)&sc->wi_keys, - sizeof(struct wi_ltv_keys)); - break; - default: - break; - } - - /* Reinitialize WaveLAN. */ - wi_init(sc); - - return; -} - -static int wi_ioctl(ifp, command, data) - struct ifnet *ifp; - u_long command; - caddr_t data; -{ - int error = 0; - struct wi_softc *sc; - struct wi_req wreq; - struct ifreq *ifr; - struct proc *p = curproc; - - sc = ifp->if_softc; - WI_LOCK(sc); - ifr = (struct ifreq *)data; - - if (sc->wi_gone) { - error = ENODEV; - goto out; - } - - switch(command) { - case SIOCSIFADDR: - case SIOCGIFADDR: - case SIOCSIFMTU: - error = ether_ioctl(ifp, command, data); - break; - case SIOCSIFFLAGS: - if (ifp->if_flags & IFF_UP) { - if (ifp->if_flags & IFF_RUNNING && - ifp->if_flags & IFF_PROMISC && - !(sc->wi_if_flags & IFF_PROMISC)) { - WI_SETVAL(WI_RID_PROMISC, 1); - } else if (ifp->if_flags & IFF_RUNNING && - !(ifp->if_flags & IFF_PROMISC) && - sc->wi_if_flags & IFF_PROMISC) { - WI_SETVAL(WI_RID_PROMISC, 0); - } else - wi_init(sc); - } else { - if (ifp->if_flags & IFF_RUNNING) { - wi_stop(sc); - } - } - sc->wi_if_flags = ifp->if_flags; - error = 0; - break; - case SIOCADDMULTI: - case SIOCDELMULTI: - wi_setmulti(sc); - error = 0; - break; - case SIOCGWAVELAN: - error = copyin(ifr->ifr_data, &wreq, sizeof(wreq)); - if (error) - break; - /* Don't show WEP keys to non-root users. */ - if (wreq.wi_type == WI_RID_DEFLT_CRYPT_KEYS && suser(p)) - break; - if (wreq.wi_type == WI_RID_IFACE_STATS) { - bcopy((char *)&sc->wi_stats, (char *)&wreq.wi_val, - sizeof(sc->wi_stats)); - wreq.wi_len = (sizeof(sc->wi_stats) / 2) + 1; - } else if (wreq.wi_type == WI_RID_DEFLT_CRYPT_KEYS) { - bcopy((char *)&sc->wi_keys, (char *)&wreq, - sizeof(struct wi_ltv_keys)); - } -#ifdef WICACHE - else if (wreq.wi_type == WI_RID_ZERO_CACHE) { - sc->wi_sigitems = sc->wi_nextitem = 0; - } else if (wreq.wi_type == WI_RID_READ_CACHE) { - char *pt = (char *)&wreq.wi_val; - bcopy((char *)&sc->wi_sigitems, - (char *)pt, sizeof(int)); - pt += (sizeof (int)); - wreq.wi_len = sizeof(int) / 2; - bcopy((char *)&sc->wi_sigcache, (char *)pt, - sizeof(struct wi_sigcache) * sc->wi_sigitems); - wreq.wi_len += ((sizeof(struct wi_sigcache) * - sc->wi_sigitems) / 2) + 1; - } -#endif - else { - if (wi_read_record(sc, (struct wi_ltv_gen *)&wreq)) { - error = EINVAL; - break; - } - } - error = copyout(&wreq, ifr->ifr_data, sizeof(wreq)); - break; - case SIOCSWAVELAN: - if ((error = suser(p))) - goto out; - error = copyin(ifr->ifr_data, &wreq, sizeof(wreq)); - if (error) - break; - if (wreq.wi_type == WI_RID_IFACE_STATS) { - error = EINVAL; - break; - } else if (wreq.wi_type == WI_RID_MGMT_XMIT) { - error = wi_mgmt_xmit(sc, (caddr_t)&wreq.wi_val, - wreq.wi_len); - } else { - error = wi_write_record(sc, (struct wi_ltv_gen *)&wreq); - if (!error) - wi_setdef(sc, &wreq); - } - break; - default: - error = EINVAL; - break; - } -out: - WI_UNLOCK(sc); - - return(error); -} - -static void wi_init(xsc) - void *xsc; -{ - struct wi_softc *sc = xsc; - struct ifnet *ifp = &sc->arpcom.ac_if; - struct wi_ltv_macaddr mac; - int id = 0; - - WI_LOCK(sc); - - if (sc->wi_gone) { - WI_UNLOCK(sc); - return; - } - - if (ifp->if_flags & IFF_RUNNING) - wi_stop(sc); - - wi_reset(sc); - - /* Program max data length. */ - WI_SETVAL(WI_RID_MAX_DATALEN, sc->wi_max_data_len); - - /* Enable/disable IBSS creation. */ - WI_SETVAL(WI_RID_CREATE_IBSS, sc->wi_create_ibss); - - /* Set the port type. */ - WI_SETVAL(WI_RID_PORTTYPE, sc->wi_ptype); - - /* Program the RTS/CTS threshold. */ - WI_SETVAL(WI_RID_RTS_THRESH, sc->wi_rts_thresh); - - /* Program the TX rate */ - WI_SETVAL(WI_RID_TX_RATE, sc->wi_tx_rate); - - /* Access point density */ - WI_SETVAL(WI_RID_SYSTEM_SCALE, sc->wi_ap_density); - - /* Power Management Enabled */ - WI_SETVAL(WI_RID_PM_ENABLED, sc->wi_pm_enabled); - - /* Power Managment Max Sleep */ - WI_SETVAL(WI_RID_MAX_SLEEP, sc->wi_max_sleep); - - /* Specify the IBSS name */ - WI_SETSTR(WI_RID_OWN_SSID, sc->wi_ibss_name); - - /* Specify the network name */ - WI_SETSTR(WI_RID_DESIRED_SSID, sc->wi_net_name); - - /* Specify the frequency to use */ - WI_SETVAL(WI_RID_OWN_CHNL, sc->wi_channel); - - /* Program the nodename. */ - WI_SETSTR(WI_RID_NODENAME, sc->wi_node_name); - - /* Set our MAC address. */ - mac.wi_len = 4; - mac.wi_type = WI_RID_MAC_NODE; - bcopy((char *)&sc->arpcom.ac_enaddr, - (char *)&mac.wi_mac_addr, ETHER_ADDR_LEN); - wi_write_record(sc, (struct wi_ltv_gen *)&mac); - - /* Configure WEP. */ - if (sc->wi_has_wep) { - WI_SETVAL(WI_RID_ENCRYPTION, sc->wi_use_wep); - WI_SETVAL(WI_RID_TX_CRYPT_KEY, sc->wi_tx_key); - sc->wi_keys.wi_len = (sizeof(struct wi_ltv_keys) / 2) + 1; - sc->wi_keys.wi_type = WI_RID_DEFLT_CRYPT_KEYS; - wi_write_record(sc, (struct wi_ltv_gen *)&sc->wi_keys); - } - - /* Initialize promisc mode. */ - if (ifp->if_flags & IFF_PROMISC) { - WI_SETVAL(WI_RID_PROMISC, 1); - } else { - WI_SETVAL(WI_RID_PROMISC, 0); - } - - /* Set multicast filter. */ - wi_setmulti(sc); - - /* Enable desired port */ - wi_cmd(sc, WI_CMD_ENABLE|sc->wi_portnum, 0); - - if (wi_alloc_nicmem(sc, 1518 + sizeof(struct wi_frame) + 8, &id)) - device_printf(sc->dev, "tx buffer allocation failed\n"); - sc->wi_tx_data_id = id; - - if (wi_alloc_nicmem(sc, 1518 + sizeof(struct wi_frame) + 8, &id)) - device_printf(sc->dev, "mgmt. buffer allocation failed\n"); - sc->wi_tx_mgmt_id = id; - - /* enable interrupts */ - CSR_WRITE_2(sc, WI_INT_EN, WI_INTRS); - - ifp->if_flags |= IFF_RUNNING; - ifp->if_flags &= ~IFF_OACTIVE; - - sc->wi_stat_ch = timeout(wi_inquire, sc, hz * 60); - WI_UNLOCK(sc); - - return; -} - -static void wi_start(ifp) - struct ifnet *ifp; -{ - struct wi_softc *sc; - struct mbuf *m0; - struct wi_frame tx_frame; - struct ether_header *eh; - int id; - - sc = ifp->if_softc; - WI_LOCK(sc); - - if (sc->wi_gone) { - WI_UNLOCK(sc); - return; - } - - if (ifp->if_flags & IFF_OACTIVE) { - WI_UNLOCK(sc); - return; - } - - IF_DEQUEUE(&ifp->if_snd, m0); - if (m0 == NULL) { - WI_UNLOCK(sc); - return; - } - - bzero((char *)&tx_frame, sizeof(tx_frame)); - id = sc->wi_tx_data_id; - eh = mtod(m0, struct ether_header *); - - /* - * Use RFC1042 encoding for IP and ARP datagrams, - * 802.3 for anything else. - */ - if (ntohs(eh->ether_type) > 1518) { - bcopy((char *)&eh->ether_dhost, - (char *)&tx_frame.wi_addr1, ETHER_ADDR_LEN); - bcopy((char *)&eh->ether_shost, - (char *)&tx_frame.wi_addr2, ETHER_ADDR_LEN); - bcopy((char *)&eh->ether_dhost, - (char *)&tx_frame.wi_dst_addr, ETHER_ADDR_LEN); - bcopy((char *)&eh->ether_shost, - (char *)&tx_frame.wi_src_addr, ETHER_ADDR_LEN); - - tx_frame.wi_dat_len = m0->m_pkthdr.len - WI_SNAPHDR_LEN; - tx_frame.wi_frame_ctl = WI_FTYPE_DATA; - tx_frame.wi_dat[0] = htons(WI_SNAP_WORD0); - tx_frame.wi_dat[1] = htons(WI_SNAP_WORD1); - tx_frame.wi_len = htons(m0->m_pkthdr.len - WI_SNAPHDR_LEN); - tx_frame.wi_type = eh->ether_type; - - m_copydata(m0, sizeof(struct ether_header), - m0->m_pkthdr.len - sizeof(struct ether_header), - (caddr_t)&sc->wi_txbuf); - - wi_write_data(sc, id, 0, (caddr_t)&tx_frame, - sizeof(struct wi_frame)); - wi_write_data(sc, id, WI_802_11_OFFSET, (caddr_t)&sc->wi_txbuf, - (m0->m_pkthdr.len - sizeof(struct ether_header)) + 2); - } else { - tx_frame.wi_dat_len = m0->m_pkthdr.len; - - eh->ether_type = htons(m0->m_pkthdr.len - WI_SNAPHDR_LEN); - m_copydata(m0, 0, m0->m_pkthdr.len, (caddr_t)&sc->wi_txbuf); - - wi_write_data(sc, id, 0, (caddr_t)&tx_frame, - sizeof(struct wi_frame)); - wi_write_data(sc, id, WI_802_3_OFFSET, (caddr_t)&sc->wi_txbuf, - m0->m_pkthdr.len + 2); - } - - /* - * If there's a BPF listner, bounce a copy of - * this frame to him. - */ - if (ifp->if_bpf) - bpf_mtap(ifp, m0); - - m_freem(m0); - - if (wi_cmd(sc, WI_CMD_TX|WI_RECLAIM, id)) - device_printf(sc->dev, "xmit failed\n"); - - ifp->if_flags |= IFF_OACTIVE; - - /* - * Set a timeout in case the chip goes out to lunch. - */ - ifp->if_timer = 5; - - WI_UNLOCK(sc); - return; -} - -static int wi_mgmt_xmit(sc, data, len) - struct wi_softc *sc; - caddr_t data; - int len; -{ - struct wi_frame tx_frame; - int id; - struct wi_80211_hdr *hdr; - caddr_t dptr; - - if (sc->wi_gone) - return(ENODEV); - - hdr = (struct wi_80211_hdr *)data; - dptr = data + sizeof(struct wi_80211_hdr); - - bzero((char *)&tx_frame, sizeof(tx_frame)); - id = sc->wi_tx_mgmt_id; - - bcopy((char *)hdr, (char *)&tx_frame.wi_frame_ctl, - sizeof(struct wi_80211_hdr)); - - tx_frame.wi_dat_len = len - WI_SNAPHDR_LEN; - tx_frame.wi_len = htons(len - WI_SNAPHDR_LEN); - - wi_write_data(sc, id, 0, (caddr_t)&tx_frame, sizeof(struct wi_frame)); - wi_write_data(sc, id, WI_802_11_OFFSET_RAW, dptr, - (len - sizeof(struct wi_80211_hdr)) + 2); - - if (wi_cmd(sc, WI_CMD_TX|WI_RECLAIM, id)) { - device_printf(sc->dev, "xmit failed\n"); - return(EIO); - } - - return(0); -} - -static void wi_stop(sc) - struct wi_softc *sc; -{ - struct ifnet *ifp; - - WI_LOCK(sc); - - if (sc->wi_gone) { - WI_UNLOCK(sc); - return; - } - - ifp = &sc->arpcom.ac_if; - - /* - * If the card is gone and the memory port isn't mapped, we will - * (hopefully) get 0xffff back from the status read, which is not - * a valid status value. - */ - if (CSR_READ_2(sc, WI_STATUS) != 0xffff) { - CSR_WRITE_2(sc, WI_INT_EN, 0); - wi_cmd(sc, WI_CMD_DISABLE|sc->wi_portnum, 0); - } - - untimeout(wi_inquire, sc, sc->wi_stat_ch); - - ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); - - WI_UNLOCK(sc); - return; -} - -static void wi_watchdog(ifp) - struct ifnet *ifp; -{ - struct wi_softc *sc; - - sc = ifp->if_softc; - - device_printf(sc->dev,"device timeout\n"); - - wi_init(sc); - - ifp->if_oerrors++; - - return; -} - -static int wi_alloc(dev) - device_t dev; -{ - struct wi_softc *sc = device_get_softc(dev); - int rid; - - rid = 0; - sc->iobase = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, - 0, ~0, (1 << 6), - rman_make_alignment_flags(1 << 6) | RF_ACTIVE); - if (!sc->iobase) { - device_printf(dev, "No I/O space?!\n"); - return (ENXIO); - } - - rid = 0; - sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, - 0, ~0, 1, RF_ACTIVE); - if (!sc->irq) { - device_printf(dev, "No irq?!\n"); - return (ENXIO); - } - - sc->dev = dev; - sc->wi_unit = device_get_unit(dev); - sc->wi_io_addr = rman_get_start(sc->iobase); - sc->wi_btag = rman_get_bustag(sc->iobase); - sc->wi_bhandle = rman_get_bushandle(sc->iobase); - - return (0); -} - -static void wi_free(dev) - device_t dev; -{ - struct wi_softc *sc = device_get_softc(dev); - - if (sc->iobase != NULL) - bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase); - if (sc->irq != NULL) - bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq); - - return; -} - -static void wi_shutdown(dev) - device_t dev; -{ - struct wi_softc *sc; - - sc = device_get_softc(dev); - wi_stop(sc); - - return; -} - -#ifdef WICACHE -/* wavelan signal strength cache code. - * store signal/noise/quality on per MAC src basis in - * a small fixed cache. The cache wraps if > MAX slots - * used. The cache may be zeroed out to start over. - * Two simple filters exist to reduce computation: - * 1. ip only (literally 0x800) which may be used - * to ignore some packets. It defaults to ip only. - * it could be used to focus on broadcast, non-IP 802.11 beacons. - * 2. multicast/broadcast only. This may be used to - * ignore unicast packets and only cache signal strength - * for multicast/broadcast packets (beacons); e.g., Mobile-IP - * beacons and not unicast traffic. - * - * The cache stores (MAC src(index), IP src (major clue), signal, - * quality, noise) - * - * No apologies for storing IP src here. It's easy and saves much - * trouble elsewhere. The cache is assumed to be INET dependent, - * although it need not be. - */ - -#ifdef documentation - -int wi_sigitems; /* number of cached entries */ -struct wi_sigcache wi_sigcache[MAXWICACHE]; /* array of cache entries */ -int wi_nextitem; /* index/# of entries */ - - -#endif - -/* control variables for cache filtering. Basic idea is - * to reduce cost (e.g., to only Mobile-IP agent beacons - * which are broadcast or multicast). Still you might - * want to measure signal strength with unicast ping packets - * on a pt. to pt. ant. setup. - */ -/* set true if you want to limit cache items to broadcast/mcast - * only packets (not unicast). Useful for mobile-ip beacons which - * are broadcast/multicast at network layer. Default is all packets - * so ping/unicast will work say with pt. to pt. antennae setup. - */ -static int wi_cache_mcastonly = 0; -SYSCTL_INT(_machdep, OID_AUTO, wi_cache_mcastonly, CTLFLAG_RW, - &wi_cache_mcastonly, 0, ""); - -/* set true if you want to limit cache items to IP packets only -*/ -static int wi_cache_iponly = 1; -SYSCTL_INT(_machdep, OID_AUTO, wi_cache_iponly, CTLFLAG_RW, - &wi_cache_iponly, 0, ""); - -/* - * Original comments: - * ----------------- - * wi_cache_store, per rx packet store signal - * strength in MAC (src) indexed cache. - * - * follows linux driver in how signal strength is computed. - * In ad hoc mode, we use the rx_quality field. - * signal and noise are trimmed to fit in the range from 47..138. - * rx_quality field MSB is signal strength. - * rx_quality field LSB is noise. - * "quality" is (signal - noise) as is log value. - * note: quality CAN be negative. - * - * In BSS mode, we use the RID for communication quality. - * TBD: BSS mode is currently untested. - * - * Bill's comments: - * --------------- - * Actually, we use the rx_quality field all the time for both "ad-hoc" - * and BSS modes. Why? Because reading an RID is really, really expensive: - * there's a bunch of PIO operations that have to be done to read a record - * from the NIC, and reading the comms quality RID each time a packet is - * received can really hurt performance. We don't have to do this anyway: - * the comms quality field only reflects the values in the rx_quality field - * anyway. The comms quality RID is only meaningful in infrastructure mode, - * but the values it contains are updated based on the rx_quality from - * frames received from the access point. - * - * Also, according to Lucent, the signal strength and noise level values - * can be converted to dBms by subtracting 149, so I've modified the code - * to do that instead of the scaling it did originally. - */ -static -void wi_cache_store (struct wi_softc *sc, struct ether_header *eh, - struct mbuf *m, unsigned short rx_quality) -{ - struct ip *ip = 0; - int i; - static int cache_slot = 0; /* use this cache entry */ - static int wrapindex = 0; /* next "free" cache entry */ - int sig, noise; - int sawip=0; - - /* filters: - * 1. ip only - * 2. configurable filter to throw out unicast packets, - * keep multicast only. - */ - - if ((ntohs(eh->ether_type) == 0x800)) { - sawip = 1; - } - - /* filter for ip packets only - */ - if (wi_cache_iponly && !sawip) { - return; - } - - /* filter for broadcast/multicast only - */ - if (wi_cache_mcastonly && ((eh->ether_dhost[0] & 1) == 0)) { - return; - } - -#ifdef SIGDEBUG - printf("wi%d: q value %x (MSB=0x%x, LSB=0x%x) \n", sc->wi_unit, - rx_quality & 0xffff, rx_quality >> 8, rx_quality & 0xff); -#endif - - /* find the ip header. we want to store the ip_src - * address. - */ - if (sawip) { - ip = mtod(m, struct ip *); - } - - /* do a linear search for a matching MAC address - * in the cache table - * . MAC address is 6 bytes, - * . var w_nextitem holds total number of entries already cached - */ - for(i = 0; i < sc->wi_nextitem; i++) { - if (! bcmp(eh->ether_shost , sc->wi_sigcache[i].macsrc, 6 )) { - /* Match!, - * so we already have this entry, - * update the data - */ - break; - } - } - - /* did we find a matching mac address? - * if yes, then overwrite a previously existing cache entry - */ - if (i < sc->wi_nextitem ) { - cache_slot = i; - } - /* else, have a new address entry,so - * add this new entry, - * if table full, then we need to replace LRU entry - */ - else { - - /* check for space in cache table - * note: wi_nextitem also holds number of entries - * added in the cache table - */ - if ( sc->wi_nextitem < MAXWICACHE ) { - cache_slot = sc->wi_nextitem; - sc->wi_nextitem++; - sc->wi_sigitems = sc->wi_nextitem; - } - /* no space found, so simply wrap with wrap index - * and "zap" the next entry - */ - else { - if (wrapindex == MAXWICACHE) { - wrapindex = 0; - } - cache_slot = wrapindex++; - } - } - - /* invariant: cache_slot now points at some slot - * in cache. - */ - if (cache_slot < 0 || cache_slot >= MAXWICACHE) { - log(LOG_ERR, "wi_cache_store, bad index: %d of " - "[0..%d], gross cache error\n", - cache_slot, MAXWICACHE); - return; - } - - /* store items in cache - * .ip source address - * .mac src - * .signal, etc. - */ - if (sawip) { - sc->wi_sigcache[cache_slot].ipsrc = ip->ip_src.s_addr; - } - bcopy( eh->ether_shost, sc->wi_sigcache[cache_slot].macsrc, 6); - - sig = (rx_quality >> 8) & 0xFF; - noise = rx_quality & 0xFF; - sc->wi_sigcache[cache_slot].signal = sig - 149; - sc->wi_sigcache[cache_slot].noise = noise - 149; - sc->wi_sigcache[cache_slot].quality = sig - noise; - - return; -} -#endif |
