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/*
* Copyright 2010 Ettus Research LLC
* Copyright 2007 Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ethernet.h"
#include "memory_map.h"
#include "nonstdio.h"
#include <stdbool.h>
#include "i2c.h"
#include "usrp2/fw_common.h"
////////////////////////////////////////////////////////////////////////
// EEPROM Layout
////////////////////////////////////////////////////////////////////////
#define USRP2_EE_MBOARD_MAC_ADDR 0x02 //6 bytes
#define USRP2_EE_MBOARD_IP_ADDR 0x0C //uint32, big-endian
static bool
unprogrammed(const void *t, size_t len)
{
int i;
uint8_t *p = (uint8_t *)t;
bool all_zeros = true;
bool all_ones = true;
for (i = 0; i < len; i++){
all_zeros &= p[i] == 0x00;
all_ones &= p[i] == 0xff;
}
return all_ones | all_zeros;
}
//////////////////// MAC Addr Stuff ///////////////////////
static int8_t src_mac_addr_initialized = false;
static eth_mac_addr_t src_mac_addr = {{
0x00, 0x50, 0xC2, 0x85, 0x3f, 0xff
}};
const eth_mac_addr_t *
ethernet_mac_addr(void)
{
if (!src_mac_addr_initialized){ // fetch from eeprom
src_mac_addr_initialized = true;
// if we're simulating, don't read the EEPROM model, it's REALLY slow
if (hwconfig_simulation_p())
return &src_mac_addr;
eth_mac_addr_t tmp;
bool ok = eeprom_read(USRP2_I2C_ADDR_MBOARD, USRP2_EE_MBOARD_MAC_ADDR, &tmp, sizeof(tmp));
if (!ok || unprogrammed(&tmp, sizeof(tmp))){
// use the default
}
else
src_mac_addr = tmp;
}
return &src_mac_addr;
}
bool
ethernet_set_mac_addr(const eth_mac_addr_t *t)
{
bool ok = eeprom_write(USRP2_I2C_ADDR_MBOARD, USRP2_EE_MBOARD_MAC_ADDR, t, sizeof(eth_mac_addr_t));
if (ok){
src_mac_addr = *t;
src_mac_addr_initialized = true;
//eth_mac_set_addr(t); //this breaks the link
}
return ok;
}
//////////////////// IP Addr Stuff ///////////////////////
static int8_t src_ip_addr_initialized = false;
static struct ip_addr src_ip_addr = {
(192 << 24 | 168 << 16 | 10 << 8 | 2 << 0)
};
const struct ip_addr *get_ip_addr(void)
{
if (!src_ip_addr_initialized){ // fetch from eeprom
src_ip_addr_initialized = true;
// if we're simulating, don't read the EEPROM model, it's REALLY slow
if (hwconfig_simulation_p())
return &src_ip_addr;
struct ip_addr tmp;
bool ok = eeprom_read(USRP2_I2C_ADDR_MBOARD, USRP2_EE_MBOARD_IP_ADDR, &tmp, sizeof(tmp));
if (!ok || unprogrammed(&tmp, sizeof(tmp))){
// use the default
}
else
src_ip_addr = tmp;
}
return &src_ip_addr;
}
bool set_ip_addr(const struct ip_addr *t){
bool ok = eeprom_write(USRP2_I2C_ADDR_MBOARD, USRP2_EE_MBOARD_IP_ADDR, t, sizeof(struct ip_addr));
if (ok){
src_ip_addr = *t;
src_ip_addr_initialized = true;
}
return ok;
}
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