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/**
* @file
* @ingroup sparc_leon3
* @brief LEON3 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
open_eth_configuration_t leon_open_eth_configuration;
int rtems_leon_open_eth_driver_attach(
struct rtems_bsdnet_ifconfig *config,
int attach
)
{
unsigned int base_addr = 0; /* avoid warnings */
unsigned int eth_irq = 0; /* avoid warnings */
struct ambapp_dev *adev;
struct ambapp_ahb_info *ahb;
/* Scan for MAC AHB slave interface */
adev = (void *)ambapp_for_each(&ambapp_plb, (OPTIONS_ALL|OPTIONS_AHB_SLVS),
VENDOR_OPENCORES, OPENCORES_ETHMAC,
ambapp_find_by_idx, NULL);
if (!adev) {
adev = (void *)ambapp_for_each(&ambapp_plb, (OPTIONS_ALL|OPTIONS_AHB_SLVS),
VENDOR_GAISLER, GAISLER_ETHAHB,
ambapp_find_by_idx, NULL);
}
if (adev)
{
ahb = DEV_TO_AHB(adev);
base_addr = ahb->start[0];
eth_irq = ahb->irq;
/* clear control register and reset NIC */
*(volatile int *) base_addr = 0;
*(volatile int *) base_addr = 0x800;
*(volatile int *) base_addr = 0;
leon_open_eth_configuration.base_address = (void *) base_addr;
leon_open_eth_configuration.vector = eth_irq + 0x10;
leon_open_eth_configuration.txd_count = TDA_COUNT;
leon_open_eth_configuration.rxd_count = RDA_COUNT;
/* enable 100 MHz operation only if cpu frequency >= 50 MHz */
if (LEON3_Timer_Regs->scaler_reload >= 49)
leon_open_eth_configuration.en100MHz = 1;
if (rtems_open_eth_driver_attach( config, &leon_open_eth_configuration )) {
LEON_Clear_interrupt(eth_irq);
LEON_Unmask_interrupt(eth_irq);
}
}
return 0;
}
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