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/**
* @file
* @ingroup RTEMSBSPsSPARCLEON2
* @brief LEON2 Opencores Ethernet MAC Configuration Information
*/
/*
* Copyright (c) 2004.
* Aeroflex Gaisler AB.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <machine/rtems-bsd-kernel-space.h>
#include <bsp.h>
#include <libchip/open_eth.h>
#if (OPEN_ETH_DEBUG & OPEN_ETH_DEBUG_PRINT_REGISTERS)
#include <stdio.h>
#endif
/*
* Default sizes of transmit and receive descriptor areas
*/
#define RDA_COUNT 16
#define TDA_COUNT 16
/*
* Default location of device registers
*/
#define OPEN_ETH_BASE_ADDRESS ((void *)0xb0000000)
/*
* Default interrupt vector
*/
#define OPEN_ETH_VECTOR 0x1C
open_eth_configuration_t leon_open_eth_configuration = {
OPEN_ETH_BASE_ADDRESS, /* base address */
OPEN_ETH_VECTOR, /* vector number */
TDA_COUNT, /* number of transmit descriptors */
RDA_COUNT, /* number of receive descriptors */
0 /* 100 MHz operation */
};
int rtems_leon_open_eth_driver_attach(struct rtems_bsdnet_ifconfig *config)
{
/* clear control register and reset NIC */
*(volatile int *) OPEN_ETH_BASE_ADDRESS = 0;
*(volatile int *) OPEN_ETH_BASE_ADDRESS = 0x800;
*(volatile int *) OPEN_ETH_BASE_ADDRESS = 0;
/* enable 100 MHz operation only if cpu frequency >= 50 MHz */
if (LEON_REG.Scaler_Reload >= 49) leon_open_eth_configuration.en100MHz = 1;
if (rtems_open_eth_driver_attach( config, &leon_open_eth_configuration )) {
LEON_REG.Interrupt_Clear = (1 << (OPEN_ETH_VECTOR - 0x10));
LEON_REG.Interrupt_Mask |= (1 << (OPEN_ETH_VECTOR - 0x10));
}
return 0;
}
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