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
48void 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
61int lmc_proto_ioctl(lmc_softc_t *sc, struct ifreq *ifr, int cmd)
62{
63	if (sc->if_type == LMC_PPP)
64		return hdlc_ioctl(sc->lmc_device, ifr, cmd);
65	return -EOPNOTSUPP;
66}
67
68int lmc_proto_open(lmc_softc_t *sc)
69{
70	int ret = 0;
71
72	if (sc->if_type == LMC_PPP) {
73		ret = hdlc_open(sc->lmc_device);
74		if (ret < 0)
75			printk(KERN_WARNING "%s: HDLC open failed: %d\n",
76			       sc->name, ret);
77	}
78	return ret;
79}
80
81void lmc_proto_close(lmc_softc_t *sc)
82{
83	if (sc->if_type == LMC_PPP)
84		hdlc_close(sc->lmc_device);
85}
86
87__be16 lmc_proto_type(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/
88{
89    switch(sc->if_type){
90    case LMC_PPP:
91	    return hdlc_type_trans(skb, sc->lmc_device);
92    case LMC_NET:
93        return htons(ETH_P_802_2);
94    case LMC_RAW: /* Packet type for skbuff kind of useless */
95        return htons(ETH_P_802_2);
96    default:
97        printk(KERN_WARNING "%s: No protocol set for this interface, assuming 802.2 (which is wrong!!)\n", sc->name);
98        return htons(ETH_P_802_2);
99    }
100}
101
102void lmc_proto_netif(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/
103{
104    switch(sc->if_type){
105    case LMC_PPP:
106    case LMC_NET:
107    default:
108        netif_rx(skb);
109        break;
110    case LMC_RAW:
111        break;
112    }
113}
114