api/api_net.c

   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