4c1a8a173c
it in detail. When setting media, don't error out when a specific media is selected. # Note: There may be some issues still here since the EtherJet PC Card doesn't # conform to the datasheet. Many different kinds of dongles can be plugged in # and it is unknown how to ask which one it is. Also, add a /* bad! */ comment to a 1/2 second delay after we set the DC/DC parameters. This should be a *sleep of some sort for !cold. Fortunately it is the only one and is only used when setting media, so the benefit from removing it is small. Unfortunately, it likely serves as an exemplar of good programming techniques, which it isn't.
1244 lines
28 KiB
C
1244 lines
28 KiB
C
/*-
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* Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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*
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* Device driver for Crystal Semiconductor CS8920 based ethernet
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* adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
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*/
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/*
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#define CS_DEBUG
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/syslog.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <net/ethernet.h>
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#include <net/bpf.h>
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#include <dev/cs/if_csvar.h>
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#include <dev/cs/if_csreg.h>
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#ifdef CS_USE_64K_DMA
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#define CS_DMA_BUFFER_SIZE 65536
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#else
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#define CS_DMA_BUFFER_SIZE 16384
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#endif
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static void cs_init(void *);
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static void cs_init_locked(struct cs_softc *);
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static int cs_ioctl(struct ifnet *, u_long, caddr_t);
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static void cs_start(struct ifnet *);
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static void cs_start_locked(struct ifnet *);
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static void cs_stop(struct cs_softc *);
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static void cs_reset(struct cs_softc *);
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static void cs_watchdog(void *);
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static int cs_mediachange(struct ifnet *);
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static void cs_mediastatus(struct ifnet *, struct ifmediareq *);
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static int cs_mediaset(struct cs_softc *, int);
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static void cs_write_mbufs(struct cs_softc*, struct mbuf*);
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static void cs_xmit_buf(struct cs_softc*);
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static int cs_get_packet(struct cs_softc*);
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static void cs_setmode(struct cs_softc*);
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static int get_eeprom_data(struct cs_softc *sc, int, int, uint16_t *);
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static int get_eeprom_cksum(int, int, uint16_t *);
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static int wait_eeprom_ready( struct cs_softc *);
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static void control_dc_dc( struct cs_softc *, int );
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static int enable_tp(struct cs_softc *);
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static int enable_aui(struct cs_softc *);
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static int enable_bnc(struct cs_softc *);
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static int cs_duplex_auto(struct cs_softc *);
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devclass_t cs_devclass;
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driver_intr_t csintr;
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/* sysctl vars */
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SYSCTL_NODE(_hw, OID_AUTO, cs, CTLFLAG_RD, 0, "cs device parameters");
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int cs_ignore_cksum_failure = 0;
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TUNABLE_INT("hw.cs.ignore_checksum_failure", &cs_ignore_cksum_failure);
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SYSCTL_INT(_hw_cs, OID_AUTO, ignore_checksum_failure, CTLFLAG_RW,
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&cs_ignore_cksum_failure, 0,
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"ignore checksum errors in cs card EEPROM");
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static int cs_recv_delay = 570;
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TUNABLE_INT("hw.cs.recv_delay", &cs_recv_delay);
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SYSCTL_INT(_hw_cs, OID_AUTO, recv_delay, CTLFLAG_RW, &cs_recv_delay, 570, "");
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static int cs8900_eeint2irq[16] = {
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10, 11, 12, 5, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255
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};
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static int cs8900_irq2eeint[16] = {
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255, 255, 255, 255, 255, 3, 255, 255,
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255, 0, 1, 2, 255, 255, 255, 255
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};
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static int
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get_eeprom_data(struct cs_softc *sc, int off, int len, uint16_t *buffer)
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{
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int i;
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#ifdef CS_DEBUG
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device_printf(sc->dev, "EEPROM data from %x for %x:\n", off, len);
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#endif
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for (i=0; i < len; i++) {
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if (wait_eeprom_ready(sc) < 0)
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return (-1);
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/* Send command to EEPROM to read */
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cs_writereg(sc, PP_EECMD, (off + i) | EEPROM_READ_CMD);
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if (wait_eeprom_ready(sc) < 0)
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return (-1);
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buffer[i] = cs_readreg(sc, PP_EEData);
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#ifdef CS_DEBUG
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printf("%04x ",buffer[i]);
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#endif
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}
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#ifdef CS_DEBUG
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printf("\n");
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#endif
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return (0);
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}
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static int
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get_eeprom_cksum(int off, int len, uint16_t *buffer)
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{
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int i;
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uint16_t cksum=0;
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for (i = 0; i < len; i++)
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cksum += buffer[i];
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cksum &= 0xffff;
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if (cksum == 0 || cs_ignore_cksum_failure)
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return (0);
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return (-1);
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}
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static int
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wait_eeprom_ready(struct cs_softc *sc)
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{
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int i;
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/*
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* From the CS8900A datasheet, section 3.5.2:
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* "Before issuing any command to the EEPROM, the host must wait
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* for the SIBUSY bit (Register 16, SelfST, bit 8) to clear. After
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* each command has been issued, the host must wait again for SIBUSY
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* to clear."
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*
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* Before we issue the command, we should be !busy, so that will
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* be fast. The datasheet suggests that clock out from the part
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* per word will be on the order of 25us, which is consistant with
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* the 1MHz serial clock and 16bits... We should never hit 100,
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* let alone 15,000 here. The original code did an unconditional
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* 30ms DELAY here. Bad Kharma. cs_readreg takes ~2us.
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*/
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for (i = 0; i < 15000; i++) /* 30ms max */
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if (!(cs_readreg(sc, PP_SelfST) & SI_BUSY))
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return (0);
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return (1);
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}
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static void
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control_dc_dc(struct cs_softc *sc, int on_not_off)
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{
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unsigned int self_control = HCB1_ENBL;
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if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off)
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self_control |= HCB1;
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else
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self_control &= ~HCB1;
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cs_writereg(sc, PP_SelfCTL, self_control);
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DELAY(500000); /* Bad! */
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}
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static int
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cs_duplex_auto(struct cs_softc *sc)
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{
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int i, error=0;
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cs_writereg(sc, PP_AutoNegCTL,
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RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE);
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for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) {
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if (i > 4000) {
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device_printf(sc->dev,
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"full/half duplex auto negotiation timeout\n");
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error = ETIMEDOUT;
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break;
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}
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DELAY(1000);
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}
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return (error);
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}
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static int
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enable_tp(struct cs_softc *sc)
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{
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cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY);
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control_dc_dc(sc, 0);
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return (0);
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}
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static int
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enable_aui(struct cs_softc *sc)
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{
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cs_writereg(sc, PP_LineCTL,
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(sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
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control_dc_dc(sc, 0);
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return (0);
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}
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static int
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enable_bnc(struct cs_softc *sc)
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{
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cs_writereg(sc, PP_LineCTL,
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(sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY);
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control_dc_dc(sc, 1);
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return (0);
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}
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int
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cs_cs89x0_probe(device_t dev)
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{
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int i;
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int error;
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u_long irq, junk;
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struct cs_softc *sc = device_get_softc(dev);
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unsigned rev_type = 0;
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uint16_t id;
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char chip_revision;
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uint16_t eeprom_buff[CHKSUM_LEN];
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int chip_type, pp_isaint, pp_isadma;
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sc->dev = dev;
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error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS);
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if (error)
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return (error);
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sc->nic_addr = rman_get_start(sc->port_res);
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if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) {
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/* Chip not detected. Let's try to reset it */
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if (bootverbose)
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device_printf(dev, "trying to reset the chip.\n");
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cs_outw(sc, ADD_PORT, PP_SelfCTL);
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i = cs_inw(sc, DATA_PORT);
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cs_outw(sc, ADD_PORT, PP_SelfCTL);
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cs_outw(sc, DATA_PORT, i | POWER_ON_RESET);
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if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG)
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return (ENXIO);
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}
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for (i = 0; i < 10000; i++) {
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id = cs_readreg(sc, PP_ChipID);
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if (id == CHIP_EISA_ID_SIG)
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break;
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}
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if (i == 10000)
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return (ENXIO);
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rev_type = cs_readreg(sc, PRODUCT_ID_ADD);
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chip_type = rev_type & ~REVISON_BITS;
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chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
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sc->chip_type = chip_type;
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if (chip_type == CS8900) {
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pp_isaint = PP_CS8900_ISAINT;
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pp_isadma = PP_CS8900_ISADMA;
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sc->send_cmd = TX_CS8900_AFTER_ALL;
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} else {
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pp_isaint = PP_CS8920_ISAINT;
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pp_isadma = PP_CS8920_ISADMA;
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sc->send_cmd = TX_CS8920_AFTER_ALL;
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}
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/*
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* Clear some fields so that fail of EEPROM will left them clean
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*/
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sc->auto_neg_cnf = 0;
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sc->adapter_cnf = 0;
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sc->isa_config = 0;
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/*
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* If no interrupt specified, use what the board tells us.
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*/
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error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
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/*
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* Get data from EEPROM
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*/
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if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) {
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device_printf(dev, "No EEPROM, assuming defaults.\n");
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} else if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
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device_printf(dev, "EEPROM read failed, assuming defaults.\n");
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} else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) {
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device_printf(dev, "EEPROM cheksum bad, assuming defaults.\n");
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} else {
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sc->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET];
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sc->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET];
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sc->isa_config = eeprom_buff[ISA_CNF_OFFSET];
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for (i=0; i<ETHER_ADDR_LEN/2; i++) {
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sc->enaddr[i*2] = eeprom_buff[i];
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sc->enaddr[i*2+1] = eeprom_buff[i] >> 8;
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}
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/*
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* If no interrupt specified, use what the
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* board tells us.
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*/
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if (error) {
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irq = sc->isa_config & INT_NO_MASK;
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error = 0;
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if (chip_type == CS8900) {
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irq = cs8900_eeint2irq[irq];
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} else {
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if (irq > CS8920_NO_INTS)
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irq = 255;
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}
|
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if (irq == 255) {
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device_printf(dev, "invalid irq in EEPROM.\n");
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error = EINVAL;
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}
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if (!error)
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bus_set_resource(dev, SYS_RES_IRQ, 0,
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irq, 1);
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}
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}
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|
|
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if (!error && !(sc->flags & CS_NO_IRQ)) {
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if (chip_type == CS8900) {
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if (irq >= 0 || irq < 16)
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irq = cs8900_irq2eeint[irq];
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else
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irq = 255;
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} else {
|
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if (irq > CS8920_NO_INTS)
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irq = 255;
|
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}
|
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if (irq == 255)
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error = EINVAL;
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}
|
|
|
|
if (error) {
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device_printf(dev, "Unknown or invalid irq\n");
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return (error);
|
|
}
|
|
|
|
if (!(sc->flags & CS_NO_IRQ))
|
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cs_writereg(sc, pp_isaint, irq);
|
|
|
|
/*
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* Temporary disabled
|
|
*
|
|
if (drq>0)
|
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cs_writereg(sc, pp_isadma, drq);
|
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else {
|
|
device_printf(dev, "incorrect drq\n",);
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return (0);
|
|
}
|
|
*/
|
|
|
|
if (bootverbose)
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device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n",
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chip_type == CS8900 ? '0' : '2',
|
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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 == NULL)
|
|
return (ENOENT);
|
|
sc->port_rid = rid;
|
|
sc->port_res = res;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Allocate an irq resource with the given resource id.
|
|
*/
|
|
int
|
|
cs_alloc_irq(device_t dev, int rid)
|
|
{
|
|
struct cs_softc *sc = device_get_softc(dev);
|
|
struct resource *res;
|
|
|
|
res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
|
|
if (res == NULL)
|
|
return (ENOENT);
|
|
sc->irq_rid = rid;
|
|
sc->irq_res = res;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* 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->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 error, media=0;
|
|
struct cs_softc *sc = device_get_softc(dev);;
|
|
struct ifnet *ifp;
|
|
|
|
sc->dev = dev;
|
|
|
|
ifp = sc->ifp = if_alloc(IFT_ETHER);
|
|
if (ifp == NULL) {
|
|
device_printf(dev, "can not if_alloc()\n");
|
|
cs_release_resources(dev);
|
|
return (ENOMEM);
|
|
}
|
|
|
|
mtx_init(&sc->lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
|
|
MTX_DEF);
|
|
callout_init_mtx(&sc->timer, &sc->lock, 0);
|
|
|
|
CS_LOCK(sc);
|
|
cs_stop(sc);
|
|
CS_UNLOCK(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_init=cs_init;
|
|
IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
|
|
|
|
ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
|
|
|
|
/*
|
|
* 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) {
|
|
device_printf(sc->dev, "Couldn't allocate memory for NIC\n");
|
|
if_free(ifp);
|
|
mtx_destroy(&sc->lock);
|
|
cs_release_resources(dev);
|
|
return(ENOMEM);
|
|
}
|
|
|
|
/*
|
|
* 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:
|
|
device_printf(sc->dev, "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->enaddr);
|
|
|
|
error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET | INTR_MPSAFE,
|
|
NULL, csintr, sc, &sc->irq_handle);
|
|
if (error) {
|
|
ether_ifdetach(ifp);
|
|
free(sc->buffer, M_DEVBUF);
|
|
if_free(ifp);
|
|
mtx_destroy(&sc->lock);
|
|
cs_release_resources(dev);
|
|
return (error);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
cs_detach(device_t dev)
|
|
{
|
|
struct cs_softc *sc;
|
|
struct ifnet *ifp;
|
|
|
|
sc = device_get_softc(dev);
|
|
ifp = sc->ifp;
|
|
|
|
CS_LOCK(sc);
|
|
cs_stop(sc);
|
|
CS_UNLOCK(sc);
|
|
callout_drain(&sc->timer);
|
|
ether_ifdetach(ifp);
|
|
bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
|
|
cs_release_resources(dev);
|
|
free(sc->buffer, M_DEVBUF);
|
|
if_free(ifp);
|
|
mtx_destroy(&sc->lock);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Initialize the board
|
|
*/
|
|
static void
|
|
cs_init(void *xsc)
|
|
{
|
|
struct cs_softc *sc=(struct cs_softc *)xsc;
|
|
|
|
CS_LOCK(sc);
|
|
cs_init_locked(sc);
|
|
CS_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
cs_init_locked(struct cs_softc *sc)
|
|
{
|
|
struct ifnet *ifp = sc->ifp;
|
|
int i, rx_cfg;
|
|
|
|
/*
|
|
* reset watchdog timer
|
|
*/
|
|
sc->tx_timeout = 0;
|
|
sc->buf_len = 0;
|
|
|
|
/*
|
|
* 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->enaddr[i * 2] |
|
|
(sc->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->ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
|
sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
callout_reset(&sc->timer, hz, cs_watchdog, sc);
|
|
|
|
/*
|
|
* Start sending process
|
|
*/
|
|
cs_start_locked(ifp);
|
|
}
|
|
|
|
/*
|
|
* 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->ifp;
|
|
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
|
|
device_printf(sc->dev, "rcvd: stat %x, len %d\n",
|
|
status, length);
|
|
#endif
|
|
|
|
if (!(status & RX_OK)) {
|
|
#ifdef CS_DEBUG
|
|
device_printf(sc->dev, "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->ifp;
|
|
int status;
|
|
|
|
#ifdef CS_DEBUG
|
|
device_printf(sc->dev, "Interrupt.\n");
|
|
#endif
|
|
|
|
CS_LOCK(sc);
|
|
while ((status=cs_inw(sc, ISQ_PORT))) {
|
|
|
|
#ifdef CS_DEBUG
|
|
device_printf(sc->dev, "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_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
sc->tx_timeout = 0;
|
|
break;
|
|
|
|
case ISQ_BUFFER_EVENT:
|
|
if (status & READY_FOR_TX) {
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
sc->tx_timeout = 0;
|
|
}
|
|
|
|
if (status & TX_UNDERRUN) {
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
sc->tx_timeout = 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_drv_flags & IFF_DRV_OACTIVE)) {
|
|
cs_start_locked(ifp);
|
|
}
|
|
CS_UNLOCK(sc);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
struct cs_softc *sc = ifp->if_softc;
|
|
|
|
CS_LOCK(sc);
|
|
cs_start_locked(ifp);
|
|
CS_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
cs_start_locked(struct ifnet *ifp)
|
|
{
|
|
int length;
|
|
struct mbuf *m, *mp;
|
|
struct cs_softc *sc = ifp->if_softc;
|
|
|
|
for (;;) {
|
|
if (sc->buf_len)
|
|
length = sc->buf_len;
|
|
else {
|
|
IF_DEQUEUE( &ifp->if_snd, m );
|
|
|
|
if (m==NULL) {
|
|
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)) {
|
|
sc->tx_timeout = sc->buf_len;
|
|
ifp->if_drv_flags |= IFF_DRV_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)
|
|
*/
|
|
sc->tx_timeout = length;
|
|
|
|
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Stop everything on the interface
|
|
*/
|
|
static void
|
|
cs_stop(struct cs_softc *sc)
|
|
{
|
|
|
|
CS_ASSERT_LOCKED(sc);
|
|
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->ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
|
|
sc->tx_timeout = 0;
|
|
callout_stop(&sc->timer);
|
|
}
|
|
|
|
/*
|
|
* Reset the interface
|
|
*/
|
|
static void
|
|
cs_reset(struct cs_softc *sc)
|
|
{
|
|
|
|
CS_ASSERT_LOCKED(sc);
|
|
cs_stop(sc);
|
|
cs_init_locked(sc);
|
|
}
|
|
|
|
static uint16_t
|
|
cs_hash_index(struct sockaddr_dl *addr)
|
|
{
|
|
uint32_t crc;
|
|
uint16_t idx;
|
|
caddr_t lla;
|
|
|
|
lla = LLADDR(addr);
|
|
crc = ether_crc32_le(lla, ETHER_ADDR_LEN);
|
|
idx = crc >> 26;
|
|
|
|
return (idx);
|
|
}
|
|
|
|
static void
|
|
cs_setmode(struct cs_softc *sc)
|
|
{
|
|
int rx_ctl;
|
|
uint16_t af[4];
|
|
uint16_t port, mask, index;
|
|
struct ifnet *ifp = sc->ifp;
|
|
struct ifmultiaddr *ifma;
|
|
|
|
/* 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;
|
|
|
|
/* Start with an empty filter */
|
|
af[0] = af[1] = af[2] = af[3] = 0x0000;
|
|
|
|
if (ifp->if_flags & IFF_ALLMULTI) {
|
|
/* Accept all multicast frames */
|
|
af[0] = af[1] = af[2] = af[3] = 0xffff;
|
|
} else {
|
|
/*
|
|
* Set up the filter to only accept multicast
|
|
* frames we're interested in.
|
|
*/
|
|
IF_ADDR_LOCK(ifp);
|
|
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
|
|
struct sockaddr_dl *dl =
|
|
(struct sockaddr_dl *)ifma->ifma_addr;
|
|
|
|
index = cs_hash_index(dl);
|
|
port = (u_int16_t) (index >> 4);
|
|
mask = (u_int16_t) (1 << (index & 0xf));
|
|
af[port] |= mask;
|
|
}
|
|
IF_ADDR_UNLOCK(ifp);
|
|
}
|
|
|
|
cs_writereg(sc, PP_LAF + 0, af[0]);
|
|
cs_writereg(sc, PP_LAF + 2, af[1]);
|
|
cs_writereg(sc, PP_LAF + 4, af[2]);
|
|
cs_writereg(sc, PP_LAF + 6, af[3]);
|
|
} 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 error=0;
|
|
|
|
#ifdef CS_DEBUG
|
|
if_printf(ifp, "%s command=%lx\n", __func__, command);
|
|
#endif
|
|
|
|
switch (command) {
|
|
case SIOCSIFFLAGS:
|
|
/*
|
|
* Switch interface state between "running" and
|
|
* "stopped", reflecting the UP flag.
|
|
*/
|
|
CS_LOCK(sc);
|
|
if (sc->ifp->if_flags & IFF_UP) {
|
|
if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)==0) {
|
|
cs_init_locked(sc);
|
|
}
|
|
} else {
|
|
if ((sc->ifp->if_drv_flags & IFF_DRV_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);
|
|
CS_UNLOCK(sc);
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
/*
|
|
* Multicast list has changed; set the hardware filter
|
|
* accordingly.
|
|
*
|
|
* See note about multicasts in cs_setmode
|
|
*/
|
|
CS_LOCK(sc);
|
|
cs_setmode(sc);
|
|
CS_UNLOCK(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;
|
|
}
|
|
|
|
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(void *arg)
|
|
{
|
|
struct cs_softc *sc = arg;
|
|
struct ifnet *ifp = sc->ifp;
|
|
|
|
CS_ASSERT_LOCKED(sc);
|
|
if (sc->tx_timeout && --sc->tx_timeout == 0) {
|
|
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);
|
|
}
|
|
callout_reset(&sc->timer, hz, cs_watchdog, sc);
|
|
}
|
|
|
|
static int
|
|
cs_mediachange(struct ifnet *ifp)
|
|
{
|
|
struct cs_softc *sc = ifp->if_softc;
|
|
struct ifmedia *ifm = &sc->media;
|
|
int error;
|
|
|
|
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
|
|
return (EINVAL);
|
|
|
|
CS_LOCK(sc);
|
|
error = cs_mediaset(sc, ifm->ifm_media);
|
|
CS_UNLOCK(sc);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
|
|
{
|
|
int line_status;
|
|
struct cs_softc *sc = ifp->if_softc;
|
|
|
|
CS_LOCK(sc);
|
|
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;
|
|
}
|
|
}
|
|
CS_UNLOCK(sc);
|
|
}
|
|
|
|
static int
|
|
cs_mediaset(struct cs_softc *sc, int media)
|
|
{
|
|
int error = 0;
|
|
|
|
/* Stop the receiver & transmitter */
|
|
cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) &
|
|
~(SERIAL_RX_ON | SERIAL_TX_ON));
|
|
|
|
#ifdef CS_DEBUG
|
|
device_printf(sc->dev, "%s media=%x\n", __func__, media);
|
|
#endif
|
|
|
|
switch (IFM_SUBTYPE(media)) {
|
|
default:
|
|
case IFM_AUTO:
|
|
/*
|
|
* This chip makes it a little hard to support this, so treat
|
|
* it as IFM_10_T, auto duplex.
|
|
*/
|
|
enable_tp(sc);
|
|
cs_duplex_auto(sc);
|
|
break;
|
|
case IFM_10_T:
|
|
enable_tp(sc);
|
|
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:
|
|
enable_bnc(sc);
|
|
break;
|
|
case IFM_10_5:
|
|
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);
|
|
}
|