1 /* $NetBSD: nif.c,v 1.6 2014/08/05 17:55:20 joerg Exp $ */
2
3 /*-
4 * Copyright (c) 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Tohru Nishimura.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33
34 #include <netinet/in.h>
35 #include <netinet/in_systm.h>
36
37 #include <lib/libsa/stand.h>
38 #include <lib/libsa/net.h>
39
40 #include <machine/bootinfo.h>
41
42 #include "globals.h"
43
44 struct nifdv {
45 char *name;
46 int (*match)(unsigned, void *);
47 void *(*init)(unsigned, void *);
48 int (*send)(void *, char *, unsigned);
49 int (*recv)(void *, char *, unsigned, unsigned);
50 void (*shutdown)(void *);
51 void *priv;
52 };
53
54 static struct iodesc netdesc;
55
56 static struct nifdv lnifdv[] = {
57 { "fxp", fxp_match, fxp_init, fxp_send, fxp_recv },
58 { "tlp", tlp_match, tlp_init, tlp_send, tlp_recv },
59 { "re", rge_match, rge_init, rge_send, rge_recv },
60 { "sk", skg_match, skg_init, skg_send, skg_recv },
61 { "stge", stg_match, stg_init, stg_send, stg_recv, stg_shutdown },
62 };
63 static int nnifdv = sizeof(lnifdv)/sizeof(lnifdv[0]);
64
65 int
netif_init(void * self)66 netif_init(void *self)
67 {
68 struct pcidev *pci = self;
69 struct iodesc *s;
70 struct nifdv *dv;
71 unsigned tag;
72 int n;
73 uint8_t enaddr[6];
74 extern struct btinfo_net bi_net;
75 extern struct btinfo_rootdevice bi_rdev;
76
77 tag = pci->bdf;
78 for (n = 0; n < nnifdv; n++) {
79 dv = &lnifdv[n];
80 if ((*dv->match)(tag, NULL) > 0)
81 goto found;
82 }
83 pci->drv = NULL;
84 return 0;
85 found:
86 pci->drv = dv->priv = (*dv->init)(tag, enaddr);
87 s = &netdesc;
88 s->io_netif = dv;
89 memcpy(s->myea, enaddr, sizeof(s->myea));
90 /* build btinfo to identify NIF device */
91 snprintf(bi_net.devname, sizeof(bi_net.devname), "%s", dv->name);
92 memcpy(bi_net.mac_address, enaddr, sizeof(bi_net.mac_address));
93 bi_net.cookie = tag;
94 snprintf(bi_rdev.devname, sizeof(bi_rdev.devname), "%s", dv->name);
95 bi_rdev.cookie = tag;
96 return 1;
97 }
98
99 void
netif_shutdown_all(void)100 netif_shutdown_all(void)
101 {
102 struct nifdv *dv;
103
104 /* currently there can be only one NIF */
105 dv = netdesc.io_netif;
106 if (dv != NULL)
107 if (dv->shutdown != NULL)
108 (*dv->shutdown)(dv->priv);
109 memset(&netdesc, 0, sizeof(netdesc));
110 }
111
112 int
netif_open(void * cookie)113 netif_open(void *cookie)
114 {
115
116 /* single action */
117 return 0;
118 }
119
120 int
netif_close(int sock)121 netif_close(int sock)
122 {
123
124 /* nothing to do for the HW */
125 return 0;
126 }
127
128 /*
129 * Send a packet. The ether header is already there.
130 * Return the length sent (or -1 on error).
131 */
132 ssize_t
netif_put(struct iodesc * desc,void * pkt,size_t len)133 netif_put(struct iodesc *desc, void *pkt, size_t len)
134 {
135 struct nifdv *dv = desc->io_netif;
136
137 return dv ? (*dv->send)(dv->priv, pkt, len) : -1;
138 }
139
140 /*
141 * Receive a packet, including the ether header.
142 * Return the total length received (or -1 on error).
143 */
144 ssize_t
netif_get(struct iodesc * desc,void * pkt,size_t maxlen,saseconds_t timo)145 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo)
146 {
147 struct nifdv *dv = desc->io_netif;
148 int len;
149
150 len = dv ? (*dv->recv)(dv->priv, pkt, maxlen, timo) : -1;
151 if (len == -1)
152 printf("timeout\n");
153 return len;
154 }
155
156 struct iodesc *
socktodesc(int num)157 socktodesc(int num)
158 {
159
160 return (num == 0) ? &netdesc : NULL;
161 }
162