1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 1997-2000 LAN Media Corporation (LMC)
4 * All rights reserved. www.lanmedia.com
5 *
6 * This code is written by:
7 * Andrew Stanley-Jones (asj@cban.com)
8 * Rob Braun (bbraun@vix.com),
9 * Michael Graff (explorer@vix.com) and
10 * Matt Thomas (matt@3am-software.com).
11 *
12 * With Help By:
13 * David Boggs
14 * Ron Crane
15 * Allan Cox
16 *
17 * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards.
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/string.h>
22 #include <linux/timer.h>
23 #include <linux/ptrace.h>
24 #include <linux/errno.h>
25 #include <linux/ioport.h>
26 #include <linux/interrupt.h>
27 #include <linux/in.h>
28 #include <linux/if_arp.h>
29 #include <linux/netdevice.h>
30 #include <linux/etherdevice.h>
31 #include <linux/skbuff.h>
32 #include <linux/inet.h>
33 #include <linux/workqueue.h>
34 #include <linux/proc_fs.h>
35 #include <linux/bitops.h>
36 #include <asm/processor.h> /* Processor type for cache alignment. */
37 #include <asm/io.h>
38 #include <asm/dma.h>
39 #include <linux/smp.h>
40
41 #include "lmc.h"
42 #include "lmc_var.h"
43 #include "lmc_debug.h"
44 #include "lmc_ioctl.h"
45 #include "lmc_proto.h"
46
47 // attach
lmc_proto_attach(lmc_softc_t * sc)48 void lmc_proto_attach(lmc_softc_t *sc) /*FOLD00*/
49 {
50 if (sc->if_type == LMC_NET) {
51 struct net_device *dev = sc->lmc_device;
52 /*
53 * They set a few basics because they don't use HDLC
54 */
55 dev->flags |= IFF_POINTOPOINT;
56 dev->hard_header_len = 0;
57 dev->addr_len = 0;
58 }
59 }
60
lmc_proto_open(lmc_softc_t * sc)61 int lmc_proto_open(lmc_softc_t *sc)
62 {
63 int ret = 0;
64
65 if (sc->if_type == LMC_PPP) {
66 ret = hdlc_open(sc->lmc_device);
67 if (ret < 0)
68 printk(KERN_WARNING "%s: HDLC open failed: %d\n",
69 sc->name, ret);
70 }
71 return ret;
72 }
73
lmc_proto_close(lmc_softc_t * sc)74 void lmc_proto_close(lmc_softc_t *sc)
75 {
76 if (sc->if_type == LMC_PPP)
77 hdlc_close(sc->lmc_device);
78 }
79
lmc_proto_type(lmc_softc_t * sc,struct sk_buff * skb)80 __be16 lmc_proto_type(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/
81 {
82 switch(sc->if_type){
83 case LMC_PPP:
84 return hdlc_type_trans(skb, sc->lmc_device);
85 case LMC_NET:
86 return htons(ETH_P_802_2);
87 case LMC_RAW: /* Packet type for skbuff kind of useless */
88 return htons(ETH_P_802_2);
89 default:
90 printk(KERN_WARNING "%s: No protocol set for this interface, assuming 802.2 (which is wrong!!)\n", sc->name);
91 return htons(ETH_P_802_2);
92 }
93 }
94
lmc_proto_netif(lmc_softc_t * sc,struct sk_buff * skb)95 void lmc_proto_netif(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/
96 {
97 switch(sc->if_type){
98 case LMC_PPP:
99 case LMC_NET:
100 default:
101 netif_rx(skb);
102 break;
103 case LMC_RAW:
104 break;
105 }
106 }
107