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 CONFIG_IS_ENABLED(ETH)
36 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
37 miiphy_init();
38 #endif
39
40 #ifdef CONFIG_PHYLIB
41 phy_init();
42 #endif
43 #endif
44 }
45
eth_mac_skip(int index)46 int eth_mac_skip(int index)
47 {
48 char enetvar[15];
49 char *skip_state;
50
51 sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
52 skip_state = env_get(enetvar);
53 return skip_state != NULL;
54 }
55
eth_current_changed(void)56 void eth_current_changed(void)
57 {
58 char *act = env_get("ethact");
59 char *ethrotate;
60
61 /*
62 * The call to eth_get_dev() below has a side effect of rotating
63 * ethernet device if uc_priv->current == NULL. This is not what
64 * we want when 'ethrotate' variable is 'no'.
65 */
66 ethrotate = env_get("ethrotate");
67 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
68 return;
69
70 /* update current ethernet name */
71 if (eth_get_dev()) {
72 if (act == NULL || strcmp(act, eth_get_name()) != 0)
73 env_set("ethact", eth_get_name());
74 }
75 /*
76 * remove the variable completely if there is no active
77 * interface
78 */
79 else if (act != NULL)
80 env_set("ethact", NULL);
81 }
82
eth_try_another(int first_restart)83 void eth_try_another(int first_restart)
84 {
85 static void *first_failed;
86 char *ethrotate;
87
88 /*
89 * Do not rotate between network interfaces when
90 * 'ethrotate' variable is set to 'no'.
91 */
92 ethrotate = env_get("ethrotate");
93 if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
94 return;
95
96 if (!eth_get_dev())
97 return;
98
99 if (first_restart)
100 first_failed = eth_get_dev();
101
102 eth_set_current_to_next();
103
104 eth_current_changed();
105
106 if (first_failed == eth_get_dev())
107 net_restart_wrap = 1;
108 }
109
eth_set_current(void)110 void eth_set_current(void)
111 {
112 static char *act;
113 static int env_changed_id;
114 int env_id;
115
116 env_id = env_get_id();
117 if ((act == NULL) || (env_changed_id != env_id)) {
118 act = env_get("ethact");
119 env_changed_id = env_id;
120 }
121
122 if (act == NULL) {
123 char *ethprime = env_get("ethprime");
124 void *dev = NULL;
125
126 if (ethprime)
127 dev = eth_get_dev_by_name(ethprime);
128 if (dev)
129 eth_set_dev(dev);
130 else
131 eth_set_dev(NULL);
132 } else {
133 eth_set_dev(eth_get_dev_by_name(act));
134 }
135
136 eth_current_changed();
137 }
138
eth_get_name(void)139 const char *eth_get_name(void)
140 {
141 return eth_get_dev() ? eth_get_dev()->name : "unknown";
142 }
143