1 /* $OpenBSD: netif_of.c,v 1.6 2014/08/21 14:24:08 mpi Exp $ */
2 /* $NetBSD: netif_of.c,v 1.1 1997/04/16 20:29:19 thorpej Exp $ */
3
4 /*
5 * Copyright (C) 1995 Wolfgang Solfrank.
6 * Copyright (C) 1995 TooLs GmbH.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by TooLs GmbH.
20 * 4. The name of TooLs GmbH may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 /*
36 * Open Firmware does most of the job for interfacing to the hardware,
37 * so it is easiest to just replace the netif module with
38 * this adaptation to the PROM network interface.
39 *
40 * Note: this is based in part on sys/arch/sparc/stand/netif_sun.c
41 */
42
43 #include <sys/param.h>
44 #include <sys/socket.h>
45
46 #if 0 /* XXX thorpej */
47 #include <string.h>
48 #include <time.h>
49 #endif
50
51 #include <net/if.h>
52
53 #include <netinet/in.h>
54 #include <netinet/if_ether.h>
55
56 #include <lib/libsa/stand.h>
57 #include <lib/libsa/net.h>
58 #include <lib/libsa/netif.h>
59
60 #include <macppc/stand/ofdev.h>
61 #include <macppc/stand/openfirm.h>
62
63 static struct netif netif_of;
64
65 struct iodesc sockets[SOPEN_MAX];
66
67 struct iodesc *
socktodesc(int sock)68 socktodesc(int sock)
69 {
70 if (sock != 0)
71 return NULL;
72 return sockets;
73 }
74
75 int
netif_open(void * machdep_hint)76 netif_open(void *machdep_hint)
77 {
78 struct of_dev *op = machdep_hint;
79 struct iodesc *io;
80
81 #ifdef NETIF_DEBUG
82 printf("netif_open...");
83 #endif
84 /* find a free socket */
85 io = sockets;
86 if (io->io_netif) {
87 #ifdef NETIF_DEBUG
88 printf("device busy\n");
89 #endif
90 errno = ENFILE;
91 return -1;
92 }
93 bzero(io, sizeof *io);
94
95 netif_of.nif_devdata = op;
96 io->io_netif = &netif_of;
97
98 /* Put our ethernet address in io->myea */
99 OF_getprop(OF_instance_to_package(op->handle),
100 "local-mac-address", io->myea, sizeof io->myea) == -1 &&
101 OF_getprop(OF_instance_to_package(op->handle),
102 "mac-address", io->myea, sizeof io->myea);
103
104 #ifdef NETIF_DEBUG
105 printf("OK\n");
106 #endif
107 return 0;
108 }
109
110 int
netif_close(int fd)111 netif_close(int fd)
112 {
113 struct iodesc *io;
114 struct netif *ni;
115
116 #ifdef NETIF_DEBUG
117 printf("netif_close(%x)...", fd);
118 #endif
119 if (fd != 0) {
120 #ifdef NETIF_DEBUG
121 printf("EBADF\n");
122 #endif
123 errno = EBADF;
124 return -1;
125 }
126
127 io = &sockets[fd];
128 ni = io->io_netif;
129 if (ni != NULL) {
130 ni->nif_devdata = NULL;
131 io->io_netif = NULL;
132 }
133 #ifdef NETIF_DEBUG
134 printf("OK\n");
135 #endif
136 return 0;
137 }
138
139 /*
140 * Send a packet. The ether header is already there.
141 * Return the length sent (or -1 on error).
142 */
143 ssize_t
netif_put(struct iodesc * desc,void * pkt,size_t len)144 netif_put(struct iodesc *desc, void *pkt, size_t len)
145 {
146 struct of_dev *op;
147 ssize_t rv;
148 size_t sendlen;
149
150 op = desc->io_netif->nif_devdata;
151
152 #ifdef NETIF_DEBUG
153 {
154 struct ether_header *eh;
155
156 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n",
157 desc, pkt, len);
158 eh = pkt;
159 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
160 printf("src: %s ", ether_sprintf(eh->ether_shost));
161 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
162 }
163 #endif
164
165 sendlen = len;
166 if (sendlen < 60) {
167 sendlen = 60;
168 #ifdef NETIF_DEBUG
169 printf("netif_put: length padded to %d\n", sendlen);
170 #endif
171 }
172
173 if (op->dmabuf) {
174 bcopy(pkt, op->dmabuf, sendlen);
175 pkt = op->dmabuf;
176 }
177 rv = OF_write(op->handle, pkt, sendlen);
178
179 #ifdef NETIF_DEBUG
180 printf("netif_put: xmit returned %d\n", rv);
181 #endif
182
183 return rv;
184 }
185
186 /*
187 * Receive a packet, including the ether header.
188 * Return the total length received (or -1 on error).
189 */
190 ssize_t
netif_get(struct iodesc * desc,void * pkt,size_t maxlen,time_t timo)191 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, time_t timo)
192 {
193 struct of_dev *op;
194 int tick0, tmo_ms;
195 int len;
196
197 op = desc->io_netif->nif_devdata;
198
199 #ifdef NETIF_DEBUG
200 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
201 pkt, maxlen, timo);
202 #endif
203
204 tmo_ms = timo * 1000;
205 tick0 = OF_milliseconds();
206
207 do {
208 len = OF_read(op->handle, pkt, maxlen);
209 } while ((len == -2 || len == 0) &&
210 ((OF_milliseconds() - tick0) < tmo_ms));
211
212 #ifdef NETIF_DEBUG
213 printf("netif_get: received len=%d\n", len);
214 #endif
215
216 if (len < 12)
217 return -1;
218
219 #ifdef NETIF_DEBUG
220 {
221 struct ether_header *eh = pkt;
222
223 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
224 printf("src: %s ", ether_sprintf(eh->ether_shost));
225 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
226 }
227 #endif
228
229 return len;
230 }
231
232 /*
233 * Shouldn't really be here, but is used solely for networking, so...
234 */
235 time_t
getsecs()236 getsecs()
237 {
238 return OF_milliseconds() / 1000;
239 }
240