sys_platform.c

MIPS YAMON, a famous monitor inc. source, make file and PDF manuals.

/************************************************************************
 *
 *  sys_platform.c
 *
 *  Platform specific system functions
 *
 * ######################################################################
 *
 * mips_start_of_legal_notice
 * 
 * Copyright (c) 2004 MIPS Technologies, Inc. All rights reserved.
 *
 *
 * Unpublished rights (if any) reserved under the copyright laws of the
 * United States of America and other countries.
 *
 * This code is proprietary to MIPS Technologies, Inc. ("MIPS
 * Technologies"). Any copying, reproducing, modifying or use of this code
 * (in whole or in part) that is not expressly permitted in writing by MIPS
 * Technologies or an authorized third party is strictly prohibited. At a
 * minimum, this code is protected under unfair competition and copyright
 * laws. Violations thereof may result in criminal penalties and fines.
 *
 * MIPS Technologies reserves the right to change this code to improve
 * function, design or otherwise. MIPS Technologies does not assume any
 * liability arising out of the application or use of this code, or of any
 * error or omission in such code. Any warranties, whether express,
 * statutory, implied or otherwise, including but not limited to the implied
 * warranties of merchantability or fitness for a particular purpose, are
 * excluded. Except as expressly provided in any written license agreement
 * from MIPS Technologies or an authorized third party, the furnishing of
 * this code does not give recipient any license to any intellectual
 * property rights, including any patent rights, that cover this code.
 *
 * This code shall not be exported, reexported, transferred, or released,
 * directly or indirectly, in violation of the law of any country or
 * international law, regulation, treaty, Executive Order, statute,
 * amendments or supplements thereto. Should a conflict arise regarding the
 * export, reexport, transfer, or release of this code, the laws of the
 * United States of America shall be the governing law.
 *
 * This code constitutes one or more of the following: commercial computer
 * software, commercial computer software documentation or other commercial
 * items. If the user of this code, or any related documentation of any
 * kind, including related technical data or manuals, is an agency,
 * department, or other entity of the United States government
 * ("Government"), the use, duplication, reproduction, release,
 * modification, disclosure, or transfer of this code, or any related
 * documentation of any kind, is restricted in accordance with Federal
 * Acquisition Regulation 12.212 for civilian agencies and Defense Federal
 * Acquisition Regulation Supplement 227.7202 for military agencies. The use
 * of this code by the Government is further restricted in accordance with
 * the terms of the license agreement(s) and/or applicable contract terms
 * and conditions covering this code from MIPS Technologies or an authorized
 * third party.
 *
 *
 *
 * 
 * mips_end_of_legal_notice
 * 
 *
 ************************************************************************/


/************************************************************************
 *  Include files
 ************************************************************************/

#include <sysdefs.h>
#include <sysdev.h>
#include <net_api.h>
#include <sys_api.h>
#include <io_api.h>
#include <lan_api.h>
#include <product.h>

/************************************************************************
 *  Definitions
 ************************************************************************/

/************************************************************************
 *  Public variables
 ************************************************************************/

/************************************************************************
 *  Static variables
 ************************************************************************/

static bool poll_enable = TRUE;

/************************************************************************
 *  Static function prototypes
 ************************************************************************/


/************************************************************************
 *  Implementation : Public functions
 ************************************************************************/


/************************************************************************
 *
 *                          sys_dma_enable
 *  Description :
 *  -------------
 *
 *  Platform specific handling of DMA (enable/disable)
 *
 *  Return values :
 *  ---------------
 *
 *  None
 *
 ************************************************************************/
void
sys_dma_enable(
    bool enable )  /* TRUE -> Enable DMA devices, FALSE -> Disable	*/
{
    t_LAN_CTRL_desc ctrl;

    ctrl.data    = NULL;
    ctrl.command = enable ? 
		       LAN_CTRL_START_CONTROLLER :
		       LAN_CTRL_STOP_CONTROLLER;

    switch( sys_platform )
    {
      case PRODUCT_MALTA_ID :
        IO_ctrl( SYS_MAJOR_LAN_AM79C973, 0, (void *)&ctrl );
	break;
      case PRODUCT_ATLASA_ID :
        IO_ctrl( SYS_MAJOR_LAN_SAA9730,  0, (void *)&ctrl );
	break;
      default :
        break;
    }
}


/************************************************************************
 *
 *                          sys_poll
 *  Description :
 *  -------------
 *
 *  Poll drivers that need to be polled.
 *
 *  Return values :
 *  ---------------
 *
 *  None
 *
 ************************************************************************/
void
sys_poll( void )
{
    if( poll_enable )
    {
        if( (sys_platform == PRODUCT_ATLASA_ID) ||
	    (sys_platform == PRODUCT_MALTA_ID) )
        {
            NET_poll();
        }
    }
}


/************************************************************************
 *
 *                          sys_poll_enable
 *  Description :
 *  -------------
 *
 *  Enable/disable non-critical polling done by function sys_poll
 *
 *  Return values :
 *  ---------------
 *
 *  None
 *
 ************************************************************************/
void
sys_poll_enable( 
    bool enable )	/* TRUE -> poll enabled, FALSE -> poll disabled */
{
    poll_enable = enable;
}


/************************************************************************
 *  Implementation : static functions
 ************************************************************************/