1 /* $NetBSD: netif_sun.c,v 1.12 2009/10/21 23:12:09 snj Exp $ */
2
3 /*
4 * Copyright (c) 1995 Gordon W. Ross
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 /*
29 * The Sun PROM has a fairly general set of network drivers,
30 * so it is easiest to just replace the netif module with
31 * this adaptation to the PROM network interface.
32 */
33
34 #include <sys/param.h>
35 #include <sys/socket.h>
36
37 #include <net/if.h>
38 #include <net/if_ether.h>
39
40 #include <netinet/in.h>
41 #include <netinet/in_systm.h>
42
43 #include <lib/libsa/stand.h>
44 #include <lib/libsa/net.h>
45 #include <lib/libsa/netif.h>
46 #include <lib/libkern/libkern.h>
47
48 #include <machine/promlib.h>
49 #include <sparc/stand/common/promdev.h>
50
51 static struct netif netif_prom;
52
53 #ifdef NETIF_DEBUG
54 int netif_debug;
55 #endif
56
57 struct iodesc sockets[SOPEN_MAX];
58
59 struct iodesc *
socktodesc(int sock)60 socktodesc(int sock)
61 {
62
63 if (sock != 0) {
64 return(NULL);
65 }
66 return (sockets);
67 }
68
69 int
netif_open(void * machdep_hint)70 netif_open(void *machdep_hint)
71 {
72 struct promdata *pd = machdep_hint;
73 struct iodesc *io;
74 int node;
75
76 /* find a free socket */
77 io = sockets;
78 if (io->io_netif) {
79 #ifdef DEBUG
80 printf("netif_open: device busy\n");
81 #endif
82 errno = ENFILE;
83 return (-1);
84 }
85 memset(io, 0, sizeof(*io));
86
87 netif_prom.nif_devdata = pd;
88 io->io_netif = &netif_prom;
89
90 /* Put our ethernet address in io->myea */
91 switch (prom_version()) {
92 case PROM_OBP_V2:
93 case PROM_OBP_V3:
94 case PROM_OPENFIRM:
95 node = prom_instance_to_package(pd->fd);
96 break;
97 default:
98 node = 0;
99 }
100 prom_getether(node, io->myea);
101
102 return(0);
103 }
104
105 int
netif_close(int fd)106 netif_close(int fd)
107 {
108 struct iodesc *io;
109 struct netif *ni;
110
111 if (fd != 0) {
112 errno = EBADF;
113 return(-1);
114 }
115
116 io = &sockets[fd];
117 ni = io->io_netif;
118 if (ni != NULL) {
119 ni->nif_devdata = NULL;
120 io->io_netif = NULL;
121 }
122 return(0);
123 }
124
125 /*
126 * Send a packet. The ether header is already there.
127 * Return the length sent (or -1 on error).
128 */
129 ssize_t
netif_put(struct iodesc * desc,void * pkt,size_t len)130 netif_put(struct iodesc *desc, void *pkt, size_t len)
131 {
132 struct promdata *pd;
133 ssize_t rv;
134 size_t sendlen;
135
136 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata;
137
138 #ifdef NETIF_DEBUG
139 if (netif_debug) {
140 struct ether_header *eh;
141
142 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n",
143 desc, pkt, len);
144 eh = pkt;
145 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
146 printf("src: %s ", ether_sprintf(eh->ether_shost));
147 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
148 }
149 #endif
150
151 sendlen = len;
152 if (sendlen < 60) {
153 sendlen = 60;
154 #ifdef NETIF_DEBUG
155 printf("netif_put: length padded to %d\n", sendlen);
156 #endif
157 }
158
159 rv = (*pd->xmit)(pd, pkt, sendlen);
160
161 #ifdef NETIF_DEBUG
162 if (netif_debug)
163 printf("netif_put: xmit returned %d\n", rv);
164 #endif
165
166 return rv;
167 }
168
169 /*
170 * Receive a packet, including the ether header.
171 * Return the total length received (or -1 on error).
172 */
173 ssize_t
netif_get(struct iodesc * desc,void * pkt,size_t maxlen,saseconds_t timo)174 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo)
175 {
176 struct promdata *pd;
177 satime_t tick0;
178 ssize_t len;
179
180 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata;
181
182 #ifdef NETIF_DEBUG
183 if (netif_debug)
184 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
185 pkt, maxlen, timo);
186 #endif
187
188 tick0 = getsecs();
189
190 do {
191 len = (*pd->recv)(pd, pkt, maxlen);
192 } while ((len == 0) && ((getsecs() - tick0) < timo));
193
194 #ifdef NETIF_DEBUG
195 if (netif_debug)
196 printf("netif_get: received len=%d\n", len);
197 #endif
198
199 if (len < 12)
200 return -1;
201
202 #ifdef NETIF_DEBUG
203 if (netif_debug) {
204 struct ether_header *eh = pkt;
205
206 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
207 printf("src: %s ", ether_sprintf(eh->ether_shost));
208 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
209 }
210 #endif
211
212 return len;
213 }
214