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NetBSD/sys/dev/pcmcia/if_wi.c

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/* $NetBSD: if_wi.c,v 1.2 1999/07/14 23:07:29 sommerfeld Exp $ */
/*
* 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.
*
* $Id: if_wi.c,v 1.2 1999/07/14 23:07:29 sommerfeld Exp $
*/
/*
* Lucent WaveLAN/IEEE 802.11 PCMCIA driver for NetBSD.
*
* Original FreeBSD driver 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.
*/
/*
* FreeBSD driver ported to NetBSD by Bill Sommerfeld in the back of the
* Oslo IETF plenary meeting.
*/
#define WI_HERMES_AUTOINC_WAR /* Work around data write autoinc bug. */
#define WI_HERMES_STATS_WAR /* Work around stats counter bug. */
#include "opt_inet.h"
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <sys/mbuf.h>
#include <sys/ioctl.h>
#include <sys/kernel.h> /* for hz */
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_inarp.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <dev/pcmcia/if_wireg.h>
#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciavar.h>
#include <dev/pcmcia/pcmciadevs.h>
#include <dev/pcmcia/if_wivar.h>
#include <dev/pcmcia/if_wi_ieee.h>
#if !defined(lint)
static const char rcsid[] =
"$Id: if_wi.c,v 1.2 1999/07/14 23:07:29 sommerfeld Exp $";
#endif
#ifdef foo
static u_int8_t wi_mcast_addr[6] = { 0x01, 0x60, 0x1D, 0x00, 0x01, 0x00 };
#endif
static int wi_match __P((struct device *, struct cfdata *, void *));
static void wi_attach __P((struct device *, struct device *, void *));
static int wi_intr __P((void *arg));
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));
static void wi_shutdown __P((void *));
static int wi_enable __P((struct wi_softc *));
static int wi_disable __P((struct wi_softc *));
struct cfattach wi_ca =
{
sizeof(struct wi_softc), wi_match, wi_attach
};
static int
wi_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pcmcia_attach_args *pa = aux;
return (pa->manufacturer == PCMCIA_VENDOR_LUCENT &&
pa->product == PCMCIA_PRODUCT_LUCENT_WAVELAN_IEEE);
}
int
wi_enable(sc)
struct wi_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, wi_intr, sc);
if (sc->sc_ih == NULL) {
printf("%s: couldn't establish interrupt handler\n",
sc->sc_dev.dv_xname);
return (EIO);
}
if (pcmcia_function_enable(sc->sc_pf) != 0) {
printf("%s: couldn't enable card\n", sc->sc_dev.dv_xname);
return (EIO);
}
wi_init(sc);
ifp->if_flags |= IFF_RUNNING;
return 0;
}
int
wi_disable(sc)
struct wi_softc *sc;
{
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
if (ifp->if_flags & IFF_RUNNING) {
wi_stop(sc);
pcmcia_function_disable(sc->sc_pf);
pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
}
ifp->if_flags &= ~IFF_RUNNING;
ifp->if_timer = 0;
/* XXX */;
return 0;
}
/*
* Attach the card.
*/
void
wi_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct wi_softc *sc = (void *) self;
struct pcmcia_attach_args *pa = aux;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
struct wi_ltv_macaddr mac;
struct wi_ltv_gen gen;
ifp = &sc->sc_ethercom.ec_if;
/* Enable the card */
sc->sc_pf = pa->pf;
pcmcia_function_init(sc->sc_pf, sc->sc_pf->cfe_head.sqh_first);
if (pcmcia_function_enable(sc->sc_pf)) {
printf(": function enable failed\n");
return;
}
/* allocate/map ISA I/O space */
if (pcmcia_io_alloc(sc->sc_pf, 0, WI_IOSIZ, WI_IOSIZ,
&sc->sc_pcioh) != 0) {
printf(": can't allocate i/o space\n");
return;
}
if (pcmcia_io_map(sc->sc_pf, PCMCIA_WIDTH_IO16, 0,
WI_IOSIZ, &sc->sc_pcioh, &sc->sc_iowin) != 0) {
printf(": can't map i/o space\n");
return;
}
sc->wi_btag = sc->sc_pcioh.iot;
sc->wi_bhandle = sc->sc_pcioh.ioh;
/* Make sure interrupts are disabled. */
CSR_WRITE_2(sc, WI_INT_EN, 0);
CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
/* Reset the NIC. */
wi_reset(sc);
memset(&mac, 0, sizeof(mac));
/* Read the station address. */
mac.wi_type = WI_RID_MAC_NODE;
mac.wi_len = 4;
wi_read_record(sc, (struct wi_ltv_gen *)&mac);
memcpy(sc->sc_macaddr, mac.wi_mac_addr, ETHER_ADDR_LEN);
printf("\n%s: address %s\n", sc->sc_dev.dv_xname,
ether_sprintf(sc->sc_macaddr));
memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ);
ifp->if_softc = sc;
ifp->if_start = wi_start;
ifp->if_ioctl = wi_ioctl;
ifp->if_watchdog = wi_watchdog;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_baudrate = 2000000;
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;
bzero((char *)&sc->wi_stats, sizeof(sc->wi_stats));
wi_init(sc);
wi_stop(sc);
/*
* Call MI attach routines.
*/
if_attach(ifp);
ether_ifattach(ifp, mac.wi_mac_addr);
#if NBPFILTER > 0
bpfattach(&sc->sc_ethercom.ec_if.if_bpf, ifp, DLT_EN10MB,
sizeof(struct ether_header));
#endif
sc->sc_sdhook = shutdownhook_establish(wi_shutdown, sc);
}
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->sc_ethercom.ec_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) {
printf("%s: oversized packet received "
"(wi_dat_len=%d, wi_status=0x%x)\n",
sc->sc_dev.dv_xname,
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);
bcopy((char *)&rx_frame.wi_addr2,
(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) {
printf("%s: oversized packet received "
"(wi_dat_len=%d, wi_status=0x%x)\n",
sc->sc_dev.dv_xname,
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++;
#if NBPFILTER > 0
/* Handle BPF listeners. */
if (ifp->if_bpf) {
bpf_mtap(ifp->if_bpf, m);
if (ifp->if_flags & IFF_PROMISC &&
(bcmp(eh->ether_dhost, sc->sc_macaddr,
ETHER_ADDR_LEN) && (eh->ether_dhost[0] & 1) == 0)) {
m_freem(m);
return;
}
}
#endif
/* Receive packet. */
(*ifp->if_input)(ifp, m);
}
static void wi_txeof(sc, status)
struct wi_softc *sc;
int status;
{
struct ifnet *ifp;
ifp = &sc->sc_ethercom.ec_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->sc_ethercom.ec_if;
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->sc_ethercom.ec_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;
}
int wi_intr(arg)
void *arg;
{
struct wi_softc *sc = arg;
struct ifnet *ifp;
u_int16_t status;
ifp = &sc->sc_ethercom.ec_if;
if (!(ifp->if_flags & IFF_UP)) {
CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF);
CSR_WRITE_2(sc, WI_INT_EN, 0);
return 1;
}
/* 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);
return 1;
}
static int wi_cmd(sc, cmd, val)
struct wi_softc *sc;
int cmd;
int val;
{
int i, s = 0;
CSR_WRITE_2(sc, WI_PARAM0, val);
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;
{
if (wi_cmd(sc, WI_CMD_INI, 0))
printf("%s: init failed\n", sc->sc_dev.dv_xname);
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;
/* 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 = &ltv->wi_val;
for (i = 0; i < ltv->wi_len - 1; i++)
ptr[i] = CSR_READ_2(sc, WI_DATA1);
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;
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 = &ltv->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;
int status;
switch (chan) {
case WI_BAP0:
selreg = WI_SEL0;
offreg = WI_OFF0;
break;
case WI_BAP1:
selreg = WI_SEL1;
offreg = WI_OFF1;
break;
default:
printf("%s: invalid data path: %x\n",
sc->sc_dev.dv_xname, chan);
return(EIO);
}
CSR_WRITE_2(sc, selreg, id);
CSR_WRITE_2(sc, offreg, off);
for (i = 0; i < WI_TIMEOUT; i++) {
status = CSR_READ_2(sc, offreg);
if (!(status & (WI_OFF_BUSY|WI_OFF_ERR)))
break;
}
if (i == WI_TIMEOUT) {
printf("%s: timeout in wi_seek to %x/%x; last status %x\n",
sc->sc_dev.dv_xname, id, off, status);
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)) {
printf("%s: failed to allocate %d bytes on NIC\n",
sc->sc_dev.dv_xname, 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) {
printf("%s: TIMED OUT in alloc\n", sc->sc_dev.dv_xname);
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)) {
printf("%s: seek failed in alloc\n", sc->sc_dev.dv_xname);
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 wi_ltv_mcast mcast;
struct ether_multi *enm;
struct ether_multistep estep;
struct ethercom *ec = &sc->sc_ethercom;
ifp = &sc->sc_ethercom.ec_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;
}
i = 0;
ETHER_FIRST_MULTI(estep, ec, enm);
while (enm != NULL) {
if (bcmp(enm->enm_addrlo, enm->enm_addrhi,
ETHER_ADDR_LEN) != 0)
goto allmulti;
if (i>= 16) {
allmulti:
bzero((char *)&mcast, sizeof(mcast));
break;
}
bcopy(enm->enm_addrlo,
(char *)&mcast.wi_mcast[i], ETHER_ADDR_LEN);
i++;
ETHER_NEXT_MULTI(estep, enm);
}
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 ifnet *ifp;
ifp = &sc->sc_ethercom.ec_if;
switch(wreq->wi_type) {
case WI_RID_MAC_NODE:
sdl = (struct sockaddr_dl *)ifp->if_sadl;
bcopy((char *)&wreq->wi_val, (char *)&sc->sc_macaddr,
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;
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 s, error = 0;
struct wi_softc *sc;
struct wi_req wreq;
struct ifreq *ifr;
struct ifaddr *ifa = (struct ifaddr *)data;
s = splimp();
sc = ifp->if_softc;
ifr = (struct ifreq *)data;
if (sc->wi_gone)
return(ENODEV);
switch(command) {
case SIOCSIFADDR:
if (!(ifp->if_flags & IFF_RUNNING) &&
(error = wi_enable(sc)) != 0)
break;
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
arp_ifinit(&sc->sc_ethercom.ec_if, ifa);
break;
#endif
}
break;
break;
#if 0
case SIOCSIFMTU:
error = ether_ioctl(ifp, command, data);
break;
#endif
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if ((ifp->if_flags & IFF_RUNNING) == 0)
wi_enable(sc);
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);
wi_disable(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;
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 (wi_read_record(sc, (struct wi_ltv_gen *)&wreq)) {
error = EINVAL;
break;
}
}
error = copyout(&wreq, ifr->ifr_data, sizeof(wreq));
break;
case SIOCSWAVELAN:
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;
}
splx(s);
return(error);
}
static void wi_init(xsc)
void *xsc;
{
struct wi_softc *sc = xsc;
struct ifnet *ifp = &sc->sc_ethercom.ec_if;
int s;
struct wi_ltv_macaddr mac;
int id = 0;
if (sc->wi_gone)
return;
s = splimp();
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;
memcpy(&mac.wi_mac_addr, sc->sc_macaddr, ETHER_ADDR_LEN);
wi_write_record(sc, (struct wi_ltv_gen *)&mac);
/* 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))
printf("%s: tx buffer allocation failed\n",
sc->sc_dev.dv_xname);
sc->wi_tx_data_id = id;
if (wi_alloc_nicmem(sc, 1518 + sizeof(struct wi_frame) + 8, &id))
printf("%s: mgmt. buffer allocation failed\n",
sc->sc_dev.dv_xname);
sc->wi_tx_mgmt_id = id;
/* enable interrupts */
CSR_WRITE_2(sc, WI_INT_EN, WI_INTRS);
splx(s);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
timeout(wi_inquire, sc, hz * 60);
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;
if (sc->wi_gone)
return;
if (ifp->if_flags & IFF_OACTIVE)
return;
IF_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
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) == ETHERTYPE_IP ||
ntohs(eh->ether_type) == ETHERTYPE_ARP ||
ntohs(eh->ether_type) == ETHERTYPE_REVARP) {
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;
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 NBPFILTER > 0
/*
* If there's a BPF listner, bounce a copy of
* this frame to him.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m0);
#endif
m_freem(m0);
if (wi_cmd(sc, WI_CMD_TX|WI_RECLAIM, id))
printf("%s: xmit failed\n", sc->sc_dev.dv_xname);
ifp->if_flags |= IFF_OACTIVE;
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
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)) {
printf("%s: xmit failed\n", sc->sc_dev.dv_xname);
return(EIO);
}
return(0);
}
static void wi_stop(sc)
struct wi_softc *sc;
{
struct ifnet *ifp;
if (sc->wi_gone)
return;
ifp = &sc->sc_ethercom.ec_if;
CSR_WRITE_2(sc, WI_INT_EN, 0);
wi_cmd(sc, WI_CMD_DISABLE|sc->wi_portnum, 0);
untimeout(wi_inquire, sc);
ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
return;
}
static void wi_watchdog(ifp)
struct ifnet *ifp;
{
struct wi_softc *sc;
sc = ifp->if_softc;
printf("%s: device timeout\n", sc->sc_dev.dv_xname);
wi_init(sc);
ifp->if_oerrors++;
return;
}
static void wi_shutdown(arg)
void *arg;
{
struct wi_softc *sc;
sc = arg;
wi_disable(sc);
return;
}
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