1 /* $OpenBSD: netif_of.c,v 1.9 2023/06/03 21:37:53 krw Exp $ */
2 /* $NetBSD: netif_of.c,v 1.1 2000/08/20 14:58:39 mrg 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 #include <net/if.h>
47
48 #include <netinet/in.h>
49 #include <netinet/if_ether.h>
50
51 #include <lib/libsa/stand.h>
52 #include <lib/libsa/net.h>
53 #include <lib/libsa/netif.h>
54
55 #include "ofdev.h"
56 #include "openfirm.h"
57
58 static struct netif netif_of;
59
60 struct iodesc sockets[SOPEN_MAX];
61
62 struct iodesc *
socktodesc(int sock)63 socktodesc(int sock)
64 {
65 if (sock != 0)
66 return NULL;
67 return sockets;
68 }
69
70 int
netif_open(void * machdep_hint)71 netif_open(void *machdep_hint)
72 {
73 struct of_dev *op = machdep_hint;
74 struct iodesc *io;
75
76 DNPRINTF(BOOT_D_OFNET, "netif_open...");
77
78 /* find a free socket */
79 io = sockets;
80 if (io->io_netif) {
81 DNPRINTF(BOOT_D_OFNET, "device busy\n");
82 errno = ENFILE;
83 return -1;
84 }
85 bzero(io, sizeof *io);
86
87 netif_of.nif_devdata = op;
88 io->io_netif = &netif_of;
89
90 /* Put our ethernet address in io->myea */
91 OF_getprop(OF_instance_to_package(op->handle),
92 "mac-address", io->myea, sizeof io->myea);
93
94 DNPRINTF(BOOT_D_OFNET, "OK\n");
95 return 0;
96 }
97
98 int
netif_close(int fd)99 netif_close(int fd)
100 {
101 struct iodesc *io;
102 struct netif *ni;
103
104 DNPRINTF(BOOT_D_OFNET, "netif_close(%x)...", fd);
105
106 if (fd != 0) {
107 DNPRINTF(BOOT_D_OFNET, "EBADF\n");
108 errno = EBADF;
109 return -1;
110 }
111
112 io = &sockets[fd];
113 ni = io->io_netif;
114 if (ni != NULL) {
115 ni->nif_devdata = NULL;
116 io->io_netif = NULL;
117 }
118
119 DNPRINTF(BOOT_D_OFNET, "OK\n");
120 return 0;
121 }
122
123 /*
124 * Send a packet. The ether header is already there.
125 * Return the length sent (or -1 on error).
126 */
127 ssize_t
netif_put(struct iodesc * desc,void * pkt,size_t len)128 netif_put(struct iodesc *desc, void *pkt, size_t len)
129 {
130 struct of_dev *op;
131 ssize_t rv;
132 size_t sendlen;
133
134 op = desc->io_netif->nif_devdata;
135
136 DNPRINTF(BOOT_D_OFNET, "netif_put: desc=0x%x pkt=0x%x len=%d\n",
137 desc, pkt, len);
138 DNPRINTF(BOOT_D_OFNET, "dst: %s, src: %s, type: 0x%x\n",
139 ether_sprintf(((struct ether_header *)pkt)->ether_dhost),
140 ether_sprintf(((struct ether_header *)pkt)->ether_shost),
141 ((struct ether_header *)pkt)->ether_type & 0xFFFF);
142
143 sendlen = len;
144 if (sendlen < 60) {
145 sendlen = 60;
146 DNPRINTF(BOOT_D_OFNET, "netif_put: length padded to %d\n",
147 sendlen);
148 }
149
150 rv = OF_write(op->handle, pkt, sendlen);
151
152 DNPRINTF(BOOT_D_OFNET, "netif_put: xmit returned %d\n", rv);
153
154 return rv;
155 }
156
157 /*
158 * Receive a packet, including the ether header.
159 * Return the total length received (or -1 on error).
160 */
161 ssize_t
netif_get(struct iodesc * desc,void * pkt,size_t maxlen,time_t timo)162 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, time_t timo)
163 {
164 struct of_dev *op;
165 int tick0, tmo_ms;
166 int len;
167
168 op = desc->io_netif->nif_devdata;
169
170 DNPRINTF(BOOT_D_OFNET, "netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
171 pkt, maxlen, timo);
172
173 tmo_ms = timo * 1000;
174 tick0 = OF_milliseconds();
175
176 do {
177 len = OF_read(op->handle, pkt, maxlen);
178 } while ((len == -2 || len == 0) &&
179 (OF_milliseconds() - tick0 < tmo_ms));
180
181 DNPRINTF(BOOT_D_OFNET, "netif_get: received len=%d\n", len);
182
183 if (len < 12)
184 return -1;
185
186 DNPRINTF(BOOT_D_OFNET, "dst: %s, src: %s, type: 0x%x\n",
187 ether_sprintf(((struct ether_header *)pkt)->ether_dhost),
188 ether_sprintf(((struct ether_header *)pkt)->ether_shost),
189 ((struct ether_header *)pkt)->ether_type & 0xFFFF);
190
191 return len;
192 }
193
194 /*
195 * Shouldn't really be here, but is used solely for networking, so...
196 */
197 time_t
getsecs(void)198 getsecs(void)
199 {
200 return OF_milliseconds() / 1000;
201 }
202