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 <bootstage.h>
10 #include <dm.h>
11 #include <env.h>
12 #include <miiphy.h>
13 #include <net.h>
14 #include "eth_internal.h"
15
eth_env_get_enetaddr_by_index(const char * base_name,int index,uchar * enetaddr)16 int eth_env_get_enetaddr_by_index(const char *base_name, int index,
17 uchar *enetaddr)
18 {
19 char enetvar[32];
20 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
21 return eth_env_get_enetaddr(enetvar, enetaddr);
22 }
23
eth_env_set_enetaddr_by_index(const char * base_name,int index,uchar * enetaddr)24 int eth_env_set_enetaddr_by_index(const char *base_name, int index,
25 uchar *enetaddr)
26 {
27 char enetvar[32];
28 sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
29 return eth_env_set_enetaddr(enetvar, enetaddr);
30 }
31
eth_common_init(void)32 void eth_common_init(void)
33 {
34 bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
35 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
36 miiphy_init();
37 #endif
38
39 #ifdef CONFIG_PHYLIB
40 phy_init();
41 #endif
42 }
43
eth_mac_skip(int index)44 int eth_mac_skip(int index)
45 {
46 char enetvar[15];
47 char *skip_state;
48
49 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
50 skip_state = env_get(enetvar);
51 return skip_state != NULL;
52 }
53
eth_current_changed(void)54 void eth_current_changed(void)
55 {
56 char *act = env_get("ethact");
57 char *ethrotate;
58
59 /*
60 * The call to eth_get_dev() below has a side effect of rotating
61 * ethernet device if uc_priv->current == NULL. This is not what
62 * we want when 'ethrotate' variable is 'no'.
63 */
64 ethrotate = env_get("ethrotate");
65 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
66 return;
67
68 /* update current ethernet name */
69 if (eth_get_dev()) {
70 if (act == NULL || strcmp(act, eth_get_name()) != 0)
71 env_set("ethact", eth_get_name());
72 }
73 /*
74 * remove the variable completely if there is no active
75 * interface
76 */
77 else if (act != NULL)
78 env_set("ethact", NULL);
79 }
80
eth_try_another(int first_restart)81 void eth_try_another(int first_restart)
82 {
83 static void *first_failed;
84 char *ethrotate;
85
86 /*
87 * Do not rotate between network interfaces when
88 * 'ethrotate' variable is set to 'no'.
89 */
90 ethrotate = env_get("ethrotate");
91 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
92 return;
93
94 if (!eth_get_dev())
95 return;
96
97 if (first_restart)
98 first_failed = eth_get_dev();
99
100 eth_set_current_to_next();
101
102 eth_current_changed();
103
104 if (first_failed == eth_get_dev())
105 net_restart_wrap = 1;
106 }
107
eth_set_current(void)108 void eth_set_current(void)
109 {
110 static char *act;
111 static int env_changed_id;
112 int env_id;
113
114 env_id = env_get_id();
115 if ((act == NULL) || (env_changed_id != env_id)) {
116 act = env_get("ethact");
117 env_changed_id = env_id;
118 }
119
120 if (act == NULL) {
121 char *ethprime = env_get("ethprime");
122 void *dev = NULL;
123
124 if (ethprime)
125 dev = eth_get_dev_by_name(ethprime);
126 if (dev)
127 eth_set_dev(dev);
128 else
129 eth_set_dev(NULL);
130 } else {
131 eth_set_dev(eth_get_dev_by_name(act));
132 }
133
134 eth_current_changed();
135 }
136
eth_get_name(void)137 const char *eth_get_name(void)
138 {
139 return eth_get_dev() ? eth_get_dev()->name : "unknown";
140 }
141