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eb71b55c32
freebsd-nq/sys/dev/cs/if_cs.c
Warner Losh eb71b55c32 For the PC Card implementation of the CS8920M that's in my IBM 
EtherJet, the interrupt is selected in the eeprom based on the layout
of the PC Card board.  Since this is encoded into the EEPROM, and has
no relationship to the IRQ that the pccard bridge routes the PC Card's
interrupt pin to.

As such, stop writing to that register.  This gets my EtherJet working.

# The eeprom reading code appears to be totally wrong for my EtherJet
# card.  This causes the card to bogusly detect the media options
# available.
2005-01-28 06:35:39 +00:00

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/*-
* Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko.
* 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 unmodified, 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 AUTHOR 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 AUTHOR 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
*
* Device driver for Crystal Semiconductor CS8920 based ethernet
* adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
*/
/*
#define CS_DEBUG
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_media.h>
#include <net/ethernet.h>
#include <net/bpf.h>
#include <dev/cs/if_csvar.h>
#include <dev/cs/if_csreg.h>
#ifdef CS_USE_64K_DMA
#define CS_DMA_BUFFER_SIZE 65536
#else
#define CS_DMA_BUFFER_SIZE 16384
#endif
static void cs_init(void *);
static int cs_ioctl(struct ifnet *, u_long, caddr_t);
static void cs_start(struct ifnet *);
static void cs_stop(struct cs_softc *);
static void cs_reset(struct cs_softc *);
static void cs_watchdog(struct ifnet *);
static int cs_mediachange(struct ifnet *);
static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
static int cs_mediaset(struct cs_softc *, int);
static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
static void cs_xmit_buf(struct cs_softc*);
static int cs_get_packet(struct cs_softc*);
static void cs_setmode(struct cs_softc*);
static int get_eeprom_data(struct cs_softc *sc, int, int, uint16_t *);
static int get_eeprom_cksum(int, int, uint16_t *);
static int wait_eeprom_ready( struct cs_softc *);
static void control_dc_dc( struct cs_softc *, int );
static int send_test_pkt( struct cs_softc * );
static int enable_tp(struct cs_softc *);
static int enable_aui(struct cs_softc *);
static int enable_bnc(struct cs_softc *);
static int cs_duplex_auto(struct cs_softc *);
devclass_t cs_devclass;
/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, cs, CTLFLAG_RD, 0, "cs device parameters");
int cs_debug = 0;
TUNABLE_INT("hw.cs.debug", &cs_debug);
SYSCTL_INT(_hw_cs, OID_AUTO, debug, CTLFLAG_RW,
&cs_debug, 0,
"cs debug");
int cs_ignore_cksum_failure = 0;
TUNABLE_INT("hw.cs.ignore_checksum_failure", &cs_ignore_cksum_failure);
SYSCTL_INT(_hw_cs, OID_AUTO, ignore_checksum_failure, CTLFLAG_RW,
&cs_ignore_cksum_failure, 0,
"ignore checksum errors in cs card EEPROM");
static int cs_recv_delay = 570;
TUNABLE_INT("hw.cs.recv_delay", &cs_recv_delay);
SYSCTL_INT(_hw_cs, OID_AUTO, recv_delay, CTLFLAG_RW, &cs_recv_delay, 570, "");
static int
get_eeprom_data(struct cs_softc *sc, int off, int len, uint16_t *buffer)
{
int i;
#ifdef CS_DEBUG
printf(CS_NAME":EEPROM data from %x for %x:\n", off, len);
#endif
for (i=0; i < len; i++) {
if (wait_eeprom_ready(sc) < 0)
return (-1);
/* Send command to EEPROM to read */
cs_writereg(sc, PP_EECMD, (off + i) | EEPROM_READ_CMD);
if (wait_eeprom_ready(sc) < 0)
return (-1);
buffer[i] = cs_readreg(sc, PP_EEData);
#ifdef CS_DEBUG
printf("%02x %02x ",(unsigned char)buffer[i],
(unsigned char)buffer[i] >> 8);
#endif
}
#ifdef CS_DEBUG
printf("\n");
#endif
return (0);
}
static int
get_eeprom_cksum(int off, int len, uint16_t *buffer)
{
int i;
uint16_t cksum=0;
for (i = 0; i < len; i++)
cksum += buffer[i];
cksum &= 0xffff;
if (cksum==0)
return (0);
if (cs_ignore_cksum_failure) {
printf(CS_NAME": checksum mismatch, ignoring\n");
return (0);
}
return (-1);
}
static int
wait_eeprom_ready(struct cs_softc *sc)
{
DELAY(30000); /* XXX should we do some checks here ? */
return 0;
}
static void
control_dc_dc(struct cs_softc *sc, int on_not_off)
{
unsigned int self_control = HCB1_ENBL;
if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
self_control |= HCB1;
else
self_control &= ~HCB1;
cs_writereg(sc, PP_SelfCTL, self_control);
DELAY(500000);
}
static int
cs_duplex_auto(struct cs_softc *sc)
{
int i, error=0;
cs_writereg(sc, PP_AutoNegCTL,
RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE);
for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) {
if (i > 40000) {
if_printf(&sc->arpcom.ac_if,
"full/half duplex auto negotiation timeout\n");
error = ETIMEDOUT;
break;
}
DELAY(1000);
}
DELAY( 1000000 );
return error;
}
static int
enable_tp(struct cs_softc *sc)
{
cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
control_dc_dc(sc, 0);
DELAY( 150000 );
if ((cs_readreg(sc, PP_LineST) & LINK_OK)==0) {
if_printf(&sc->arpcom.ac_if, "failed to enable TP\n");
return EINVAL;
}
return 0;
}
/*
* XXX This was rewritten from Linux driver without any tests.
*/
static int
send_test_pkt(struct cs_softc *sc)
{
char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
0, 46, /* A 46 in network order */
0, 0, /* DSAP=0 & SSAP=0 fields */
0xf3, 0 /* Control (Test Req + P bit set) */ };
int i;
u_char ether_address_backup[ETHER_ADDR_LEN];
for (i = 0; i < ETHER_ADDR_LEN; i++)
ether_address_backup[i] = sc->arpcom.ac_enaddr[i];
cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_TX_ON);
bcopy(test_packet, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
bcopy(test_packet+ETHER_ADDR_LEN,
sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
cs_outw(sc, TX_LEN_PORT, sizeof(test_packet));
/* Wait for chip to allocate memory */
DELAY(50000);
if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
for (i = 0; i < ETHER_ADDR_LEN; i++)
sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
return 0;
}
outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet));
DELAY(30000);
for (i = 0; i < ETHER_ADDR_LEN; i++)
sc->arpcom.ac_enaddr[i] = ether_address_backup[i];
if ((cs_readreg(sc, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK)
return 1;
return 0;
}
/*
* XXX This was rewritten from Linux driver without any tests.
*/
static int
enable_aui(struct cs_softc *sc)
{
control_dc_dc(sc, 0);
cs_writereg(sc, PP_LineCTL,
(sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
if (!send_test_pkt(sc)) {
if_printf(&sc->arpcom.ac_if, "failed to enable AUI\n");
return EINVAL;
}
return 0;
}
/*
* XXX This was rewritten from Linux driver without any tests.
*/
static int
enable_bnc(struct cs_softc *sc)
{
control_dc_dc(sc, 1);
cs_writereg(sc, PP_LineCTL,
(sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
if (!send_test_pkt(sc)) {
if_printf(&sc->arpcom.ac_if, "failed to enable BNC\n");
return EINVAL;
}
return 0;
}
int
cs_cs89x0_probe(device_t dev)
{
int i;
int error;
u_long irq, junk;
struct cs_softc *sc = device_get_softc(dev);
unsigned rev_type = 0;
uint16_t id;
char chip_revision;
uint16_t eeprom_buff[CHKSUM_LEN];
int chip_type, pp_isaint, pp_isadma;
error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
if (error)
return (error);
sc->nic_addr = rman_get_start(sc->port_res);
if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) {
/* Chip not detected. Let's try to reset it */
if (bootverbose)
device_printf(dev, "trying to reset the chip.\n");
cs_outw(sc, ADD_PORT, PP_SelfCTL);
i = cs_inw(sc, DATA_PORT);
cs_outw(sc, ADD_PORT, PP_SelfCTL);
cs_outw(sc, DATA_PORT, i | POWER_ON_RESET);
if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG)
return (ENXIO);
}
for (i = 0; i < 10000; i++) {
id = cs_readreg(sc, PP_ChipID);
if (id == CHIP_EISA_ID_SIG)
break;
}
if (i == 10000)
return (ENXIO);
rev_type = cs_readreg(sc, PRODUCT_ID_ADD);
chip_type = rev_type & ~REVISON_BITS;
chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
sc->chip_type = chip_type;
if(chip_type==CS8900) {
pp_isaint = PP_CS8900_ISAINT;
pp_isadma = PP_CS8900_ISADMA;
sc->send_cmd = TX_CS8900_AFTER_ALL;
} else {
pp_isaint = PP_CS8920_ISAINT;
pp_isadma = PP_CS8920_ISADMA;
sc->send_cmd = TX_CS8920_AFTER_ALL;
}
/*
* Clear some fields so that fail of EEPROM will left them clean
*/
sc->auto_neg_cnf = 0;
sc->adapter_cnf = 0;
sc->isa_config = 0;
/*
* If no interrupt specified (or "?"), use what the board tells us.
*/
error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
/*
* Get data from EEPROM
*/
if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) {
device_printf(dev, "No EEPROM, assuming defaults.\n");
} else {
if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
device_printf(dev, "EEPROM read failed, "
"assuming defaults.\n");
} else {
if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
device_printf(dev, "EEPROM cheksum bad, "
"assuming defaults.\n");
} else {
sc->auto_neg_cnf =
eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
sc->adapter_cnf =
eeprom_buff[ADAPTER_CNF_OFFSET/2];
sc->isa_config =
eeprom_buff[ISA_CNF_OFFSET/2];
for (i=0; i<ETHER_ADDR_LEN/2; i++) {
sc->arpcom.ac_enaddr[i*2]=
eeprom_buff[i];
sc->arpcom.ac_enaddr[i*2+1]=
eeprom_buff[i] >> 8;
}
/*
* If no interrupt specified (or "?"),
* use what the board tells us.
*/
if (error) {
irq = sc->isa_config & INT_NO_MASK;
if (chip_type==CS8900) {
switch(irq) {
case 0:
irq=10;
error=0;
break;
case 1:
irq=11;
error=0;
break;
case 2:
irq=12;
error=0;
break;
case 3:
irq=5;
error=0;
break;
default:
device_printf(dev, "invalid irq in EEPROM.\n");
error=EINVAL;
}
} else {
if (irq>CS8920_NO_INTS) {
device_printf(dev, "invalid irq in EEPROM.\n");
error=EINVAL;
} else {
error=0;
}
}
if (!error)
bus_set_resource(dev, SYS_RES_IRQ, 0,
irq, 1);
}
}
}
}
if (!error) {
if (chip_type == CS8900) {
switch(irq) {
case 5:
irq = 3;
break;
case 10:
irq = 0;
break;
case 11:
irq = 1;
break;
case 12:
irq = 2;
break;
default:
error=EINVAL;
}
} else {
if (irq > CS8920_NO_INTS) {
error = EINVAL;
}
}
}
if (!error) {
if (!(sc->flags & CS_NO_IRQ))
cs_writereg(sc, pp_isaint, irq);
} else {
device_printf(dev, "Unknown or invalid irq\n");
return (ENXIO);
}
/*
* Temporary disabled
*
if (drq>0)
cs_writereg(sc, pp_isadma, drq);
else {
device_printf(dev, "incorrect drq\n",);
return 0;
}
*/
if (bootverbose)
device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
chip_type==CS8900 ? '0' : '2',
chip_type==CS8920M ? "M" : "",
chip_revision,
(sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "",
(sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "",
(sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : "");
if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) &&
(sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
sc->line_ctl = LOW_RX_SQUELCH;
else
sc->line_ctl = 0;
return 0;
}
/*
* Allocate a port resource with the given resource id.
*/
int cs_alloc_port(device_t dev, int rid, int size)
{
struct cs_softc *sc = device_get_softc(dev);
struct resource *res;
res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0ul, ~0ul, size, RF_ACTIVE);
if (res) {
sc->port_rid = rid;
sc->port_res = res;
sc->port_used = size;
return (0);
} else {
return (ENOENT);
}
}
/*
* Allocate a memory resource with the given resource id.
*/
int cs_alloc_memory(device_t dev, int rid, int size)
{
struct cs_softc *sc = device_get_softc(dev);
struct resource *res;
res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
0ul, ~0ul, size, RF_ACTIVE);
if (res) {
sc->mem_rid = rid;
sc->mem_res = res;
sc->mem_used = size;
return (0);
} else {
return (ENOENT);
}
}
/*
* Allocate an irq resource with the given resource id.
*/
int cs_alloc_irq(device_t dev, int rid, int flags)
{
struct cs_softc *sc = device_get_softc(dev);
struct resource *res;
res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
(RF_ACTIVE | flags));
if (res) {
sc->irq_rid = rid;
sc->irq_res = res;
return (0);
} else {
return (ENOENT);
}
}
/*
* Release all resources
*/
void cs_release_resources(device_t dev)
{
struct cs_softc *sc = device_get_softc(dev);
if (sc->port_res) {
bus_release_resource(dev, SYS_RES_IOPORT,
sc->port_rid, sc->port_res);
sc->port_res = 0;
}
if (sc->mem_res) {
bus_release_resource(dev, SYS_RES_MEMORY,
sc->mem_rid, sc->mem_res);
sc->mem_res = 0;
}
if (sc->irq_res) {
bus_release_resource(dev, SYS_RES_IRQ,
sc->irq_rid, sc->irq_res);
sc->irq_res = 0;
}
}
/*
* Install the interface into kernel networking data structures
*/
int
cs_attach(device_t dev)
{
int media=0;
struct cs_softc *sc = device_get_softc(dev);;
struct ifnet *ifp = &(sc->arpcom.ac_if);
cs_stop( sc );
ifp->if_softc=sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_start=cs_start;
ifp->if_ioctl=cs_ioctl;
ifp->if_watchdog=cs_watchdog;
ifp->if_init=cs_init;
ifp->if_snd.ifq_maxlen= IFQ_MAXLEN;
/*
* MIB DATA
*/
/*
ifp->if_linkmib=&sc->mibdata;
ifp->if_linkmiblen=sizeof sc->mibdata;
*/
ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
IFF_NEEDSGIANT);
/*
* this code still in progress (DMA support)
*
sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_NOWAIT);
if (sc->recv_ring == NULL) {
log(LOG_ERR,
"%s: Couldn't allocate memory for NIC\n", ifp->if_xname);
return(0);
}
if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF))
< (128*1024-CS_DMA_BUFFER_SIZE))
sc->recv_ring+=16*1024;
*/
sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_NOWAIT);
if (sc->buffer == NULL) {
if_printf(ifp, "Couldn't allocate memory for NIC\n");
return(0);
}
/*
* Initialize the media structures.
*/
ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus);
if (sc->adapter_cnf & A_CNF_10B_T) {
ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
if (sc->chip_type != CS8900) {
ifmedia_add(&sc->media,
IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
ifmedia_add(&sc->media,
IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
}
}
if (sc->adapter_cnf & A_CNF_10B_2)
ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL);
if (sc->adapter_cnf & A_CNF_AUI)
ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL);
if (sc->adapter_cnf & A_CNF_MEDIA)
ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL);
/* Set default media from EEPROM */
switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) {
case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break;
case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break;
case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break;
case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break;
default:
if_printf(ifp, "no media, assuming 10baseT\n");
sc->adapter_cnf |= A_CNF_10B_T;
ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL);
if (sc->chip_type != CS8900) {
ifmedia_add(&sc->media,
IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
ifmedia_add(&sc->media,
IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
}
media = IFM_ETHER | IFM_10_T;
break;
}
ifmedia_set(&sc->media, media);
cs_mediaset(sc, media);
ether_ifattach(ifp, sc->arpcom.ac_enaddr);
return (0);
}
int
cs_detach(device_t dev)
{
struct cs_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
ifp = &sc->arpcom.ac_if;
cs_stop(sc);
ifp->if_flags &= ~IFF_RUNNING;
ether_ifdetach(ifp);
cs_release_resources(dev);
return (0);
}
/*
* Initialize the board
*/
static void
cs_init(void *xsc)
{
struct cs_softc *sc=(struct cs_softc *)xsc;
struct ifnet *ifp = &sc->arpcom.ac_if;
int i, s, rx_cfg;
/*
* reset whatchdog timer
*/
ifp->if_timer=0;
sc->buf_len = 0;
s=splimp();
/*
* Hardware initialization of cs
*/
/* Enable receiver and transmitter */
cs_writereg(sc, PP_LineCTL,
cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
/* Configure the receiver mode */
cs_setmode(sc);
/*
* This defines what type of frames will cause interrupts
* Bad frames should generate interrupts so that the driver
* could track statistics of discarded packets
*/
rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL |
RX_EXTRA_DATA_ENBL;
if (sc->isa_config & STREAM_TRANSFER)
rx_cfg |= RX_STREAM_ENBL;
cs_writereg(sc, PP_RxCFG, rx_cfg);
cs_writereg(sc, PP_TxCFG, TX_LOST_CRS_ENBL |
TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL |
TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
cs_writereg(sc, PP_BufCFG, READY_FOR_TX_ENBL |
RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL |
TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/);
/* Write MAC address into IA filter */
for (i=0; i<ETHER_ADDR_LEN/2; i++)
cs_writereg(sc, PP_IA + i * 2,
sc->arpcom.ac_enaddr[i * 2] |
(sc->arpcom.ac_enaddr[i * 2 + 1] << 8) );
/*
* Now enable everything
*/
/*
#ifdef CS_USE_64K_DMA
cs_writereg(sc, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K);
#else
cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
#endif
*/
cs_writereg(sc, PP_BusCTL, ENABLE_IRQ);
/*
* Set running and clear output active flags
*/
sc->arpcom.ac_if.if_flags |= IFF_RUNNING;
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
/*
* Start sending process
*/
cs_start(ifp);
(void) splx(s);
}
/*
* Get the packet from the board and send it to the upper layer.
*/
static int
cs_get_packet(struct cs_softc *sc)
{
struct ifnet *ifp = &(sc->arpcom.ac_if);
int iobase = sc->nic_addr, status, length;
struct ether_header *eh;
struct mbuf *m;
#ifdef CS_DEBUG
int i;
#endif
status = cs_inw(sc, RX_FRAME_PORT);
length = cs_inw(sc, RX_FRAME_PORT);
#ifdef CS_DEBUG
if_printf(ifp, "rcvd: stat %x, len %d\n",
status, length);
#endif
if (!(status & RX_OK)) {
#ifdef CS_DEBUG
if_printf(ifp, "bad pkt stat %x\n", status);
#endif
ifp->if_ierrors++;
return -1;
}
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m==NULL)
return -1;
if (length > MHLEN) {
MCLGET(m, M_DONTWAIT);
if (!(m->m_flags & M_EXT)) {
m_freem(m);
return -1;
}
}
/* Initialize packet's header info */
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = length;
m->m_len = length;
/* Get the data */
insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1);
eh = mtod(m, struct ether_header *);
#ifdef CS_DEBUG
for (i=0;i<length;i++)
printf(" %02x",(unsigned char)*((char *)(m->m_data+i)));
printf( "\n" );
#endif
if (status & (RX_IA | RX_BROADCAST) ||
(ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) {
/* Feed the packet to the upper layer */
(*ifp->if_input)(ifp, m);
ifp->if_ipackets++;
if (length == ETHER_MAX_LEN-ETHER_CRC_LEN)
DELAY(cs_recv_delay);
} else {
m_freem(m);
}
return 0;
}
/*
* Handle interrupts
*/
void
csintr(void *arg)
{
struct cs_softc *sc = (struct cs_softc*) arg;
struct ifnet *ifp = &(sc->arpcom.ac_if);
int status;
#ifdef CS_DEBUG
if_printf(ifp, "Interrupt.\n");
#endif
while ((status=cs_inw(sc, ISQ_PORT))) {
#ifdef CS_DEBUG
if_printf(ifp, "from ISQ: %04x\n", status);
#endif
switch (status & ISQ_EVENT_MASK) {
case ISQ_RECEIVER_EVENT:
cs_get_packet(sc);
break;
case ISQ_TRANSMITTER_EVENT:
if (status & TX_OK)
ifp->if_opackets++;
else
ifp->if_oerrors++;
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
break;
case ISQ_BUFFER_EVENT:
if (status & READY_FOR_TX) {
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
}
if (status & TX_UNDERRUN) {
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
ifp->if_oerrors++;
}
break;
case ISQ_RX_MISS_EVENT:
ifp->if_ierrors+=(status>>6);
break;
case ISQ_TX_COL_EVENT:
ifp->if_collisions+=(status>>6);
break;
}
}
if (!(ifp->if_flags & IFF_OACTIVE)) {
cs_start(ifp);
}
}
/*
* Save the data in buffer
*/
static void
cs_write_mbufs( struct cs_softc *sc, struct mbuf *m )
{
int len;
struct mbuf *mp;
unsigned char *data, *buf;
for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) {
len = mp->m_len;
/*
* Ignore empty parts
*/
if (!len)
continue;
/*
* Find actual data address
*/
data = mtod(mp, caddr_t);
bcopy((caddr_t) data, (caddr_t) buf, len);
buf += len;
sc->buf_len += len;
}
}
static void
cs_xmit_buf( struct cs_softc *sc )
{
outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1);
sc->buf_len = 0;
}
static void
cs_start(struct ifnet *ifp)
{
int s, length;
struct mbuf *m, *mp;
struct cs_softc *sc = ifp->if_softc;
s = splimp();
for (;;) {
if (sc->buf_len)
length = sc->buf_len;
else {
IF_DEQUEUE( &ifp->if_snd, m );
if (m==NULL) {
(void) splx(s);
return;
}
for (length=0, mp=m; mp != NULL; mp=mp->m_next)
length += mp->m_len;
/* Skip zero-length packets */
if (length == 0) {
m_freem(m);
continue;
}
cs_write_mbufs(sc, m);
BPF_MTAP(ifp, m);
m_freem(m);
}
/*
* Issue a SEND command
*/
cs_outw(sc, TX_CMD_PORT, sc->send_cmd);
cs_outw(sc, TX_LEN_PORT, length );
/*
* If there's no free space in the buffer then leave
* this packet for the next time: indicate output active
* and return.
*/
if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) {
ifp->if_timer = sc->buf_len;
(void) splx(s);
ifp->if_flags |= IFF_OACTIVE;
return;
}
cs_xmit_buf(sc);
/*
* Set the watchdog timer in case we never hear
* from board again. (I don't know about correct
* value for this timeout)
*/
ifp->if_timer = length;
(void) splx(s);
ifp->if_flags |= IFF_OACTIVE;
return;
}
}
/*
* Stop everything on the interface
*/
static void
cs_stop(struct cs_softc *sc)
{
int s = splimp();
cs_writereg(sc, PP_RxCFG, 0);
cs_writereg(sc, PP_TxCFG, 0);
cs_writereg(sc, PP_BufCFG, 0);
cs_writereg(sc, PP_BusCTL, 0);
sc->arpcom.ac_if.if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
sc->arpcom.ac_if.if_timer = 0;
(void) splx(s);
}
/*
* Reset the interface
*/
static void
cs_reset(struct cs_softc *sc)
{
cs_stop(sc);
cs_init(sc);
}
static void
cs_setmode(struct cs_softc *sc)
{
struct ifnet *ifp = &(sc->arpcom.ac_if);
int rx_ctl;
/* Stop the receiver while changing filters */
cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON);
if (ifp->if_flags & IFF_PROMISC) {
/* Turn on promiscuous mode. */
rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
} else {
if (ifp->if_flags & IFF_MULTICAST) {
/* Allow receiving frames with multicast addresses */
rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
/*
* Here the reconfiguration of chip's multicast
* filters should be done but I've no idea about
* hash transformation in this chip. If you can
* add this code or describe me the transformation
* I'd be very glad.
*/
} else {
/*
* Receive only good frames addressed for us and
* good broadcasts.
*/
rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
RX_OK_ACCEPT;
}
}
/* Set up the filter */
cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
/* Turn on receiver */
cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON);
}
static int
cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data)
{
struct cs_softc *sc=ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
int s,error=0;
#ifdef CS_DEBUG
if_printf(ifp, "ioctl(%lx)\n", command);
#endif
s=splimp();
switch (command) {
case SIOCSIFFLAGS:
/*
* Switch interface state between "running" and
* "stopped", reflecting the UP flag.
*/
if (sc->arpcom.ac_if.if_flags & IFF_UP) {
if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)==0) {
cs_init(sc);
}
} else {
if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)!=0) {
cs_stop(sc);
}
}
/*
* Promiscuous and/or multicast flags may have changed,
* so reprogram the multicast filter and/or receive mode.
*
* See note about multicasts in cs_setmode
*/
cs_setmode(sc);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
/*
* Multicast list has changed; set the hardware filter
* accordingly.
*
* See note about multicasts in cs_setmode
*/
cs_setmode(sc);
error = 0;
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
break;
default:
error = ether_ioctl(ifp, command, data);
break;
}
(void) 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.
*/
static void
cs_watchdog(struct ifnet *ifp)
{
struct cs_softc *sc = ifp->if_softc;
ifp->if_oerrors++;
log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
/* Reset the interface */
if (ifp->if_flags & IFF_UP)
cs_reset(sc);
else
cs_stop(sc);
}
static int
cs_mediachange(struct ifnet *ifp)
{
struct cs_softc *sc = ifp->if_softc;
struct ifmedia *ifm = &sc->media;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return EINVAL;
return cs_mediaset(sc, ifm->ifm_media);
}
static void
cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
{
int line_status;
struct cs_softc *sc = ifp->if_softc;
ifmr->ifm_active = IFM_ETHER;
line_status = cs_readreg(sc, PP_LineST);
if (line_status & TENBASET_ON) {
ifmr->ifm_active |= IFM_10_T;
if (sc->chip_type != CS8900) {
if (cs_readreg(sc, PP_AutoNegST) & FDX_ACTIVE)
ifmr->ifm_active |= IFM_FDX;
if (cs_readreg(sc, PP_AutoNegST) & HDX_ACTIVE)
ifmr->ifm_active |= IFM_HDX;
}
ifmr->ifm_status = IFM_AVALID;
if (line_status & LINK_OK)
ifmr->ifm_status |= IFM_ACTIVE;
} else {
if (line_status & AUI_ON) {
cs_writereg(sc, PP_SelfCTL, cs_readreg(sc, PP_SelfCTL) |
HCB1_ENBL);
if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^
(cs_readreg(sc, PP_SelfCTL) & HCB1))
ifmr->ifm_active |= IFM_10_2;
else
ifmr->ifm_active |= IFM_10_5;
}
}
}
static int
cs_mediaset(struct cs_softc *sc, int media)
{
int error;
/* Stop the receiver & transmitter */
cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) &
~(SERIAL_RX_ON | SERIAL_TX_ON));
#ifdef CS_DEBUG
if_printf(&sc->arpcom.ac_if, "cs_setmedia(%x)\n", media);
#endif
switch (IFM_SUBTYPE(media)) {
default:
case IFM_AUTO:
if ((error=enable_tp(sc))==0)
error = cs_duplex_auto(sc);
else if ((error=enable_bnc(sc)) != 0)
error = enable_aui(sc);
break;
case IFM_10_T:
if ((error=enable_tp(sc)) != 0)
break;
if (media & IFM_FDX)
cs_duplex_full(sc);
else if (media & IFM_HDX)
cs_duplex_half(sc);
else
error = cs_duplex_auto(sc);
break;
case IFM_10_2:
error = enable_bnc(sc);
break;
case IFM_10_5:
error = enable_aui(sc);
break;
}
/*
* Turn the transmitter & receiver back on
*/
cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) |
SERIAL_RX_ON | SERIAL_TX_ON);
return error;
}
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