1 /* $NetBSD: nif.c,v 1.2 2011/02/10 13:38:08 nisimura 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 int (*halt)(void *, int); 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 }; 62 static int nnifdv = sizeof(lnifdv)/sizeof(lnifdv[0]); 63 64 int 65 netif_init(void *self) 66 { 67 struct pcidev *pci = self; 68 struct iodesc *s; 69 struct nifdv *dv; 70 unsigned tag; 71 int n; 72 uint8_t enaddr[6]; 73 extern struct btinfo_net bi_net; 74 extern struct btinfo_rootdevice bi_rdev; 75 76 tag = pci->bdf; 77 for (n = 0; n < nnifdv; n++) { 78 dv = &lnifdv[n]; 79 if ((*dv->match)(tag, NULL) > 0) 80 goto found; 81 } 82 return 0; 83 found: 84 pci->drv = dv->priv = (*dv->init)(tag, enaddr); 85 s = &netdesc; 86 s->io_netif = dv; 87 memcpy(s->myea, enaddr, sizeof(s->myea)); 88 /* build btinfo to identify NIF device */ 89 snprintf(bi_net.devname, sizeof(bi_net.devname), dv->name); 90 memcpy(bi_net.mac_address, enaddr, sizeof(bi_net.mac_address)); 91 bi_net.cookie = tag; 92 snprintf(bi_rdev.devname, sizeof(bi_rdev.devname), dv->name); 93 bi_rdev.cookie = tag; 94 return 1; 95 } 96 97 int 98 netif_open(void *cookie) 99 { 100 /* single action */ 101 return 0; 102 } 103 104 int 105 netif_close(int sock) 106 { 107 /* nothing to do for the HW */ 108 return 0; 109 } 110 111 /* 112 * Send a packet. The ether header is already there. 113 * Return the length sent (or -1 on error). 114 */ 115 ssize_t 116 netif_put(struct iodesc *desc, void *pkt, size_t len) 117 { 118 struct nifdv *dv = desc->io_netif; 119 120 return dv ? (*dv->send)(dv->priv, pkt, len) : -1; 121 } 122 123 /* 124 * Receive a packet, including the ether header. 125 * Return the total length received (or -1 on error). 126 */ 127 ssize_t 128 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 129 { 130 struct nifdv *dv = desc->io_netif; 131 int len; 132 133 len = dv ? (*dv->recv)(dv->priv, pkt, maxlen, timo) : -1; 134 if (len == -1) 135 printf("timeout\n"); 136 return len; 137 } 138 139 struct iodesc * 140 socktodesc(int num) 141 { 142 143 return (num == 0) ? &netdesc : NULL; 144 } 145