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if_cs.c (150306) if_cs.c (156559)
1/*-
2 * Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/dev/cs/if_cs.c 150306 2005-09-19 03:10:21Z imp $");
30__FBSDID("$FreeBSD: head/sys/dev/cs/if_cs.c 156559 2006-03-10 23:50:53Z philip $");
31
32/*
33 *
34 * Device driver for Crystal Semiconductor CS8920 based ethernet
35 * adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
36 */
37
38/*

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52#include <sys/module.h>
53#include <sys/bus.h>
54#include <machine/bus.h>
55#include <sys/rman.h>
56#include <machine/resource.h>
57
58#include <net/if.h>
59#include <net/if_arp.h>
31
32/*
33 *
34 * Device driver for Crystal Semiconductor CS8920 based ethernet
35 * adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997
36 */
37
38/*

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52#include <sys/module.h>
53#include <sys/bus.h>
54#include <machine/bus.h>
55#include <sys/rman.h>
56#include <machine/resource.h>
57
58#include <net/if.h>
59#include <net/if_arp.h>
60#include <net/if_dl.h>
60#include <net/if_media.h>
61#include <net/if_types.h>
62#include <net/ethernet.h>
63#include <net/bpf.h>
64
65#include <dev/cs/if_csvar.h>
66#include <dev/cs/if_csreg.h>
67

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1046 */
1047static void
1048cs_reset(struct cs_softc *sc)
1049{
1050 cs_stop(sc);
1051 cs_init(sc);
1052}
1053
61#include <net/if_media.h>
62#include <net/if_types.h>
63#include <net/ethernet.h>
64#include <net/bpf.h>
65
66#include <dev/cs/if_csvar.h>
67#include <dev/cs/if_csreg.h>
68

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1047 */
1048static void
1049cs_reset(struct cs_softc *sc)
1050{
1051 cs_stop(sc);
1052 cs_init(sc);
1053}
1054
1055static uint16_t
1056cs_hash_index(struct sockaddr_dl *addr)
1057{
1058 uint32_t crc;
1059 uint16_t idx;
1060 caddr_t lla;
1061
1062 lla = LLADDR(addr);
1063 crc = ether_crc32_le(lla, ETHER_ADDR_LEN);
1064 idx = crc >> 26;
1065
1066 return (idx);
1067}
1068
1054static void
1055cs_setmode(struct cs_softc *sc)
1056{
1069static void
1070cs_setmode(struct cs_softc *sc)
1071{
1057 struct ifnet *ifp = sc->ifp;
1058 int rx_ctl;
1072 int rx_ctl;
1073 uint16_t af[4];
1074 uint16_t port, mask, index;
1075 struct ifnet *ifp = sc->ifp;
1076 struct ifmultiaddr *ifma;
1059
1060 /* Stop the receiver while changing filters */
1061 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON);
1062
1063 if (ifp->if_flags & IFF_PROMISC) {
1064 /* Turn on promiscuous mode. */
1065 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1077
1078 /* Stop the receiver while changing filters */
1079 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON);
1080
1081 if (ifp->if_flags & IFF_PROMISC) {
1082 /* Turn on promiscuous mode. */
1083 rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT;
1066 } else {
1067 if (ifp->if_flags & IFF_MULTICAST) {
1068 /* Allow receiving frames with multicast addresses */
1069 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1070 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1071 /*
1072 * Here the reconfiguration of chip's multicast
1073 * filters should be done but I've no idea about
1074 * hash transformation in this chip. If you can
1075 * add this code or describe me the transformation
1076 * I'd be very glad.
1077 */
1084 } else if (ifp->if_flags & IFF_MULTICAST) {
1085 /* Allow receiving frames with multicast addresses */
1086 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1087 RX_OK_ACCEPT | RX_MULTCAST_ACCEPT;
1088
1089 /* Start with an empty filter */
1090 af[0] = af[1] = af[2] = af[3] = 0x0000;
1091
1092 if (ifp->if_flags & IFF_ALLMULTI) {
1093 /* Accept all multicast frames */
1094 af[0] = af[1] = af[2] = af[3] = 0xffff;
1078 } else {
1095 } else {
1079 /*
1080 * Receive only good frames addressed for us and
1081 * good broadcasts.
1096 /*
1097 * Set up the filter to only accept multicast
1098 * frames we're interested in.
1082 */
1099 */
1083 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1084 RX_OK_ACCEPT;
1100 IF_ADDR_LOCK(ifp);
1101 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1102 struct sockaddr_dl *dl =
1103 (struct sockaddr_dl *)ifma->ifma_addr;
1104
1105 index = cs_hash_index(dl);
1106 port = (u_int16_t) (index >> 4);
1107 mask = (u_int16_t) (1 << (index & 0xf));
1108 af[port] |= mask;
1109 }
1110 IF_ADDR_UNLOCK(ifp);
1085 }
1111 }
1112
1113 cs_writereg(sc, PP_LAF + 0, af[0]);
1114 cs_writereg(sc, PP_LAF + 2, af[1]);
1115 cs_writereg(sc, PP_LAF + 4, af[2]);
1116 cs_writereg(sc, PP_LAF + 6, af[3]);
1117 } else {
1118 /*
1119 * Receive only good frames addressed for us and
1120 * good broadcasts.
1121 */
1122 rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT |
1123 RX_OK_ACCEPT;
1086 }
1087
1088 /* Set up the filter */
1089 cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1090
1091 /* Turn on receiver */
1092 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON);
1093}

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1125
1126 /* Set up the filter */
1127 cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl);
1128
1129 /* Turn on receiver */
1130 cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON);
1131}

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