1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2001-2015
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Joe Hershberger, National Instruments
6 */
7
8 #include <common.h>
9 #include <dm.h>
10 #include <environment.h>
11 #include <miiphy.h>
12 #include <net.h>
13 #include "eth_internal.h"
14
eth_env_get_enetaddr_by_index(const char * base_name,int index,uchar * enetaddr)15 int eth_env_get_enetaddr_by_index(const char *base_name, int index,
16 uchar *enetaddr)
17 {
18 char enetvar[32];
19 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
20 return eth_env_get_enetaddr(enetvar, enetaddr);
21 }
22
eth_env_set_enetaddr_by_index(const char * base_name,int index,uchar * enetaddr)23 int eth_env_set_enetaddr_by_index(const char *base_name, int index,
24 uchar *enetaddr)
25 {
26 char enetvar[32];
27 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
28 return eth_env_set_enetaddr(enetvar, enetaddr);
29 }
30
eth_common_init(void)31 void eth_common_init(void)
32 {
33 bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
34 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
35 miiphy_init();
36 #endif
37
38 #ifdef CONFIG_PHYLIB
39 phy_init();
40 #endif
41 }
42
eth_mac_skip(int index)43 int eth_mac_skip(int index)
44 {
45 char enetvar[15];
46 char *skip_state;
47
48 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
49 skip_state = env_get(enetvar);
50 return skip_state != NULL;
51 }
52
eth_current_changed(void)53 void eth_current_changed(void)
54 {
55 char *act = env_get("ethact");
56 char *ethrotate;
57
58 /*
59 * The call to eth_get_dev() below has a side effect of rotating
60 * ethernet device if uc_priv->current == NULL. This is not what
61 * we want when 'ethrotate' variable is 'no'.
62 */
63 ethrotate = env_get("ethrotate");
64 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
65 return;
66
67 /* update current ethernet name */
68 if (eth_get_dev()) {
69 if (act == NULL || strcmp(act, eth_get_name()) != 0)
70 env_set("ethact", eth_get_name());
71 }
72 /*
73 * remove the variable completely if there is no active
74 * interface
75 */
76 else if (act != NULL)
77 env_set("ethact", NULL);
78 }
79
eth_try_another(int first_restart)80 void eth_try_another(int first_restart)
81 {
82 static void *first_failed;
83 char *ethrotate;
84
85 /*
86 * Do not rotate between network interfaces when
87 * 'ethrotate' variable is set to 'no'.
88 */
89 ethrotate = env_get("ethrotate");
90 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
91 return;
92
93 if (!eth_get_dev())
94 return;
95
96 if (first_restart)
97 first_failed = eth_get_dev();
98
99 eth_set_current_to_next();
100
101 eth_current_changed();
102
103 if (first_failed == eth_get_dev())
104 net_restart_wrap = 1;
105 }
106
eth_set_current(void)107 void eth_set_current(void)
108 {
109 static char *act;
110 static int env_changed_id;
111 int env_id;
112
113 env_id = get_env_id();
114 if ((act == NULL) || (env_changed_id != env_id)) {
115 act = env_get("ethact");
116 env_changed_id = env_id;
117 }
118
119 if (act == NULL) {
120 char *ethprime = env_get("ethprime");
121 void *dev = NULL;
122
123 if (ethprime)
124 dev = eth_get_dev_by_name(ethprime);
125 if (dev)
126 eth_set_dev(dev);
127 else
128 eth_set_dev(NULL);
129 } else {
130 eth_set_dev(eth_get_dev_by_name(act));
131 }
132
133 eth_current_changed();
134 }
135
eth_get_name(void)136 const char *eth_get_name(void)
137 {
138 return eth_get_dev() ? eth_get_dev()->name : "unknown";
139 }
140