1 /*
2  * (C) Copyright 2007 Semihalf
3  *
4  * Written by: Rafal Jaworowski <raj@semihalf.com>
5  *
6  * See file CREDITS for list of people who contributed to this
7  * project.
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License as
11  * published by the Free Software Foundation; either version 2 of
12  * the License, or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22  * MA 02111-1307 USA
23  *
24  */
25 
26 #include <config.h>
27 #include <common.h>
28 #include <net.h>
29 #include <linux/types.h>
30 #include <api_public.h>
31 
32 DECLARE_GLOBAL_DATA_PTR;
33 
34 #define DEBUG
35 #undef DEBUG
36 
37 #if !defined(CONFIG_NET_MULTI)
38 #error "API/net is currently only available for platforms with CONFIG_NET_MULTI"
39 #endif
40 
41 #ifdef DEBUG
42 #define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt, ##args); } while (0)
43 #else
44 #define debugf(fmt, args...)
45 #endif
46 
47 #define errf(fmt, args...) do { printf("ERROR @ %s(): ", __func__); printf(fmt, ##args); } while (0)
48 
49 
dev_valid_net(void * cookie)50 static int dev_valid_net(void *cookie)
51 {
52 	return ((void *)eth_get_dev() == cookie) ? 1 : 0;
53 }
54 
dev_open_net(void * cookie)55 int dev_open_net(void *cookie)
56 {
57 	if (!dev_valid_net(cookie))
58 		return API_ENODEV;
59 
60 	if (eth_init(gd->bd) < 0)
61 		return API_EIO;
62 
63 	return 0;
64 }
65 
dev_close_net(void * cookie)66 int dev_close_net(void *cookie)
67 {
68 	if (!dev_valid_net(cookie))
69 		return API_ENODEV;
70 
71 	eth_halt();
72 	return 0;
73 }
74 
75 /*
76  * There can only be one active eth interface at a time - use what is
77  * currently set to eth_current
78  */
dev_enum_net(struct device_info * di)79 int dev_enum_net(struct device_info *di)
80 {
81 	struct eth_device *eth_current = eth_get_dev();
82 
83 	di->type = DEV_TYP_NET;
84 	di->cookie = (void *)eth_current;
85 	if (di->cookie == NULL)
86 		return 0;
87 
88 	memcpy(di->di_net.hwaddr, eth_current->enetaddr, 6);
89 
90 	debugf("device found, returning cookie 0x%08x\n",
91 		(u_int32_t)di->cookie);
92 
93 	return 1;
94 }
95 
dev_write_net(void * cookie,void * buf,int len)96 int dev_write_net(void *cookie, void *buf, int len)
97 {
98 	/* XXX verify that cookie points to a valid net device??? */
99 
100 	return eth_send(buf, len);
101 }
102 
dev_read_net(void * cookie,void * buf,int len)103 int dev_read_net(void *cookie, void *buf, int len)
104 {
105 	/* XXX verify that cookie points to a valid net device??? */
106 
107 	return eth_receive(buf, len);
108 }
109