Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 1997-2000 LAN Media Corporation (LMC) |
| 3 | * All rights reserved. www.lanmedia.com |
| 4 | * |
| 5 | * This code is written by: |
| 6 | * Andrew Stanley-Jones (asj@cban.com) |
| 7 | * Rob Braun (bbraun@vix.com), |
| 8 | * Michael Graff (explorer@vix.com) and |
| 9 | * Matt Thomas (matt@3am-software.com). |
| 10 | * |
| 11 | * With Help By: |
| 12 | * David Boggs |
| 13 | * Ron Crane |
| 14 | * Allan Cox |
| 15 | * |
| 16 | * This software may be used and distributed according to the terms |
| 17 | * of the GNU General Public License version 2, incorporated herein by reference. |
| 18 | * |
| 19 | * Driver for the LanMedia LMC5200, LMC5245, LMC1000, LMC1200 cards. |
| 20 | */ |
| 21 | |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/string.h> |
| 24 | #include <linux/timer.h> |
| 25 | #include <linux/ptrace.h> |
| 26 | #include <linux/errno.h> |
| 27 | #include <linux/ioport.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/pci.h> |
| 31 | #include <linux/in.h> |
| 32 | #include <linux/if_arp.h> |
| 33 | #include <linux/netdevice.h> |
| 34 | #include <linux/etherdevice.h> |
| 35 | #include <linux/skbuff.h> |
| 36 | #include <linux/inet.h> |
| 37 | #include <linux/workqueue.h> |
| 38 | #include <linux/proc_fs.h> |
| 39 | #include <linux/bitops.h> |
| 40 | |
| 41 | #include <net/syncppp.h> |
| 42 | |
| 43 | #include <asm/processor.h> /* Processor type for cache alignment. */ |
| 44 | #include <asm/io.h> |
| 45 | #include <asm/dma.h> |
| 46 | #include <linux/smp.h> |
| 47 | |
| 48 | #include "lmc.h" |
| 49 | #include "lmc_var.h" |
| 50 | #include "lmc_debug.h" |
| 51 | #include "lmc_ioctl.h" |
| 52 | #include "lmc_proto.h" |
| 53 | |
| 54 | /* |
| 55 | * The compile-time variable SPPPSTUP causes the module to be |
| 56 | * compiled without referencing any of the sync ppp routines. |
| 57 | */ |
| 58 | #ifdef SPPPSTUB |
| 59 | #define SPPP_detach(d) (void)0 |
| 60 | #define SPPP_open(d) 0 |
| 61 | #define SPPP_reopen(d) (void)0 |
| 62 | #define SPPP_close(d) (void)0 |
| 63 | #define SPPP_attach(d) (void)0 |
| 64 | #define SPPP_do_ioctl(d,i,c) -EOPNOTSUPP |
| 65 | #else |
| 66 | #define SPPP_attach(x) sppp_attach((x)->pd) |
| 67 | #define SPPP_detach(x) sppp_detach((x)->pd->dev) |
| 68 | #define SPPP_open(x) sppp_open((x)->pd->dev) |
| 69 | #define SPPP_reopen(x) sppp_reopen((x)->pd->dev) |
| 70 | #define SPPP_close(x) sppp_close((x)->pd->dev) |
| 71 | #define SPPP_do_ioctl(x, y, z) sppp_do_ioctl((x)->pd->dev, (y), (z)) |
| 72 | #endif |
| 73 | |
| 74 | // init |
| 75 | void lmc_proto_init(lmc_softc_t *sc) /*FOLD00*/ |
| 76 | { |
| 77 | lmc_trace(sc->lmc_device, "lmc_proto_init in"); |
| 78 | switch(sc->if_type){ |
| 79 | case LMC_PPP: |
| 80 | sc->pd = kmalloc(sizeof(struct ppp_device), GFP_KERNEL); |
| 81 | if (!sc->pd) { |
| 82 | printk("lmc_proto_init(): kmalloc failure!\n"); |
| 83 | return; |
| 84 | } |
| 85 | sc->pd->dev = sc->lmc_device; |
| 86 | sc->if_ptr = sc->pd; |
| 87 | break; |
| 88 | case LMC_RAW: |
| 89 | break; |
| 90 | default: |
| 91 | break; |
| 92 | } |
| 93 | lmc_trace(sc->lmc_device, "lmc_proto_init out"); |
| 94 | } |
| 95 | |
| 96 | // attach |
| 97 | void lmc_proto_attach(lmc_softc_t *sc) /*FOLD00*/ |
| 98 | { |
| 99 | lmc_trace(sc->lmc_device, "lmc_proto_attach in"); |
| 100 | switch(sc->if_type){ |
| 101 | case LMC_PPP: |
| 102 | { |
| 103 | struct net_device *dev = sc->lmc_device; |
| 104 | SPPP_attach(sc); |
| 105 | dev->do_ioctl = lmc_ioctl; |
| 106 | } |
| 107 | break; |
| 108 | case LMC_NET: |
| 109 | { |
| 110 | struct net_device *dev = sc->lmc_device; |
| 111 | /* |
| 112 | * They set a few basics because they don't use sync_ppp |
| 113 | */ |
| 114 | dev->flags |= IFF_POINTOPOINT; |
| 115 | dev->hard_header = NULL; |
| 116 | dev->hard_header_len = 0; |
| 117 | dev->addr_len = 0; |
| 118 | } |
| 119 | case LMC_RAW: /* Setup the task queue, maybe we should notify someone? */ |
| 120 | { |
| 121 | } |
| 122 | default: |
| 123 | break; |
| 124 | } |
| 125 | lmc_trace(sc->lmc_device, "lmc_proto_attach out"); |
| 126 | } |
| 127 | |
| 128 | // detach |
| 129 | void lmc_proto_detach(lmc_softc_t *sc) /*FOLD00*/ |
| 130 | { |
| 131 | switch(sc->if_type){ |
| 132 | case LMC_PPP: |
| 133 | SPPP_detach(sc); |
| 134 | break; |
| 135 | case LMC_RAW: /* Tell someone we're detaching? */ |
| 136 | break; |
| 137 | default: |
| 138 | break; |
| 139 | } |
| 140 | |
| 141 | } |
| 142 | |
| 143 | // reopen |
| 144 | void lmc_proto_reopen(lmc_softc_t *sc) /*FOLD00*/ |
| 145 | { |
| 146 | lmc_trace(sc->lmc_device, "lmc_proto_reopen in"); |
| 147 | switch(sc->if_type){ |
| 148 | case LMC_PPP: |
| 149 | SPPP_reopen(sc); |
| 150 | break; |
| 151 | case LMC_RAW: /* Reset the interface after being down, prerape to receive packets again */ |
| 152 | break; |
| 153 | default: |
| 154 | break; |
| 155 | } |
| 156 | lmc_trace(sc->lmc_device, "lmc_proto_reopen out"); |
| 157 | } |
| 158 | |
| 159 | |
| 160 | // ioctl |
| 161 | int lmc_proto_ioctl(lmc_softc_t *sc, struct ifreq *ifr, int cmd) /*FOLD00*/ |
| 162 | { |
| 163 | lmc_trace(sc->lmc_device, "lmc_proto_ioctl out"); |
| 164 | switch(sc->if_type){ |
| 165 | case LMC_PPP: |
| 166 | return SPPP_do_ioctl (sc, ifr, cmd); |
| 167 | break; |
| 168 | default: |
| 169 | return -EOPNOTSUPP; |
| 170 | break; |
| 171 | } |
| 172 | lmc_trace(sc->lmc_device, "lmc_proto_ioctl out"); |
| 173 | } |
| 174 | |
| 175 | // open |
| 176 | void lmc_proto_open(lmc_softc_t *sc) /*FOLD00*/ |
| 177 | { |
| 178 | int ret; |
| 179 | |
| 180 | lmc_trace(sc->lmc_device, "lmc_proto_open in"); |
| 181 | switch(sc->if_type){ |
| 182 | case LMC_PPP: |
| 183 | ret = SPPP_open(sc); |
| 184 | if(ret < 0) |
| 185 | printk("%s: syncPPP open failed: %d\n", sc->name, ret); |
| 186 | break; |
| 187 | case LMC_RAW: /* We're about to start getting packets! */ |
| 188 | break; |
| 189 | default: |
| 190 | break; |
| 191 | } |
| 192 | lmc_trace(sc->lmc_device, "lmc_proto_open out"); |
| 193 | } |
| 194 | |
| 195 | // close |
| 196 | |
| 197 | void lmc_proto_close(lmc_softc_t *sc) /*FOLD00*/ |
| 198 | { |
| 199 | lmc_trace(sc->lmc_device, "lmc_proto_close in"); |
| 200 | switch(sc->if_type){ |
| 201 | case LMC_PPP: |
| 202 | SPPP_close(sc); |
| 203 | break; |
| 204 | case LMC_RAW: /* Interface going down */ |
| 205 | break; |
| 206 | default: |
| 207 | break; |
| 208 | } |
| 209 | lmc_trace(sc->lmc_device, "lmc_proto_close out"); |
| 210 | } |
| 211 | |
| 212 | unsigned short lmc_proto_type(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/ |
| 213 | { |
| 214 | lmc_trace(sc->lmc_device, "lmc_proto_type in"); |
| 215 | switch(sc->if_type){ |
| 216 | case LMC_PPP: |
| 217 | return htons(ETH_P_WAN_PPP); |
| 218 | break; |
| 219 | case LMC_NET: |
| 220 | return htons(ETH_P_802_2); |
| 221 | break; |
| 222 | case LMC_RAW: /* Packet type for skbuff kind of useless */ |
| 223 | return htons(ETH_P_802_2); |
| 224 | break; |
| 225 | default: |
| 226 | printk(KERN_WARNING "%s: No protocol set for this interface, assuming 802.2 (which is wrong!!)\n", sc->name); |
| 227 | return htons(ETH_P_802_2); |
| 228 | break; |
| 229 | } |
| 230 | lmc_trace(sc->lmc_device, "lmc_proto_tye out"); |
| 231 | |
| 232 | } |
| 233 | |
| 234 | void lmc_proto_netif(lmc_softc_t *sc, struct sk_buff *skb) /*FOLD00*/ |
| 235 | { |
| 236 | lmc_trace(sc->lmc_device, "lmc_proto_netif in"); |
| 237 | switch(sc->if_type){ |
| 238 | case LMC_PPP: |
| 239 | case LMC_NET: |
| 240 | default: |
| 241 | skb->dev->last_rx = jiffies; |
| 242 | netif_rx(skb); |
| 243 | break; |
| 244 | case LMC_RAW: |
| 245 | break; |
| 246 | } |
| 247 | lmc_trace(sc->lmc_device, "lmc_proto_netif out"); |
| 248 | } |
| 249 | |