xref: /openbmc/u-boot/api/api_net.c (revision 5d89b37f)
1 /*
2  * (C) Copyright 2007 Semihalf
3  *
4  * Written by: Rafal Jaworowski <raj@semihalf.com>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #include <config.h>
10 #include <common.h>
11 #include <net.h>
12 #include <linux/types.h>
13 #include <api_public.h>
14 
15 DECLARE_GLOBAL_DATA_PTR;
16 
17 #define DEBUG
18 #undef DEBUG
19 
20 #ifdef DEBUG
21 #define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt, ##args); } while (0)
22 #else
23 #define debugf(fmt, args...)
24 #endif
25 
26 #define errf(fmt, args...) do { printf("ERROR @ %s(): ", __func__); printf(fmt, ##args); } while (0)
27 
28 #if defined(CONFIG_CMD_NET) && !defined(CONFIG_DM_ETH)
29 
30 static int dev_valid_net(void *cookie)
31 {
32 	return ((void *)eth_get_dev() == cookie) ? 1 : 0;
33 }
34 
35 int dev_open_net(void *cookie)
36 {
37 	if (!dev_valid_net(cookie))
38 		return API_ENODEV;
39 
40 	if (eth_init() < 0)
41 		return API_EIO;
42 
43 	return 0;
44 }
45 
46 int dev_close_net(void *cookie)
47 {
48 	if (!dev_valid_net(cookie))
49 		return API_ENODEV;
50 
51 	eth_halt();
52 	return 0;
53 }
54 
55 /*
56  * There can only be one active eth interface at a time - use what is
57  * currently set to eth_current
58  */
59 int dev_enum_net(struct device_info *di)
60 {
61 	struct eth_device *eth_current = eth_get_dev();
62 
63 	di->type = DEV_TYP_NET;
64 	di->cookie = (void *)eth_current;
65 	if (di->cookie == NULL)
66 		return 0;
67 
68 	memcpy(di->di_net.hwaddr, eth_current->enetaddr, 6);
69 
70 	debugf("device found, returning cookie 0x%08x\n",
71 		(u_int32_t)di->cookie);
72 
73 	return 1;
74 }
75 
76 int dev_write_net(void *cookie, void *buf, int len)
77 {
78 	/* XXX verify that cookie points to a valid net device??? */
79 
80 	return eth_send(buf, len);
81 }
82 
83 int dev_read_net(void *cookie, void *buf, int len)
84 {
85 	/* XXX verify that cookie points to a valid net device??? */
86 
87 	return eth_receive(buf, len);
88 }
89 
90 #else
91 
92 int dev_open_net(void *cookie)
93 {
94 	return API_ENODEV;
95 }
96 
97 int dev_close_net(void *cookie)
98 {
99 	return API_ENODEV;
100 }
101 
102 int dev_enum_net(struct device_info *di)
103 {
104 	return 0;
105 }
106 
107 int dev_write_net(void *cookie, void *buf, int len)
108 {
109 	return API_ENODEV;
110 }
111 
112 int dev_read_net(void *cookie, void *buf, int len)
113 {
114 	return API_ENODEV;
115 }
116 
117 #endif
118