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