111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
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/*****************************************************************************
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*
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* COPYRIGHT 1993 - COLORADO MEMORY SYSTEMS, INC.
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* ALL RIGHTS RESERVED.
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*
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******************************************************************************
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*
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* FILE: \SE\DRIVER\Q117KDI\NT\SRC\0X15A0C.C
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*
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* FUNCTION: kdi_GetControllerBase
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*
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* PURPOSE:
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*
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* HISTORY:
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* $Log: J:\se.vcs\driver\q117kdi\nt\src\0x15a0c.c $
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*
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* Rev 1.0 02 Dec 1993 15:07:06 KEVINKES
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* Initial Revision.
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*
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*****************************************************************************/
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#define FCT_ID 0x15A0C
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#include "include\public\adi_api.h"
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#include "include\public\frb_api.h"
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#include "q117kdi\include\kdiwhio.h"
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#include "q117kdi\include\kdiwpriv.h"
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#include "include\private\kdi_pub.h"
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/*endinclude*/
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dUDWord kdi_GetControllerBase
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(
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/* INPUT PARAMETERS: */
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INTERFACE_TYPE bus_type,
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dUDWord bus_number,
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PHYSICAL_ADDRESS io_address,
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dUDWord number_of_bytes,
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dBoolean in_io_space,
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dBooleanPtr mapped_address
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/* UPDATE PARAMETERS: */
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/* OUTPUT PARAMETERS: */
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)
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/* COMMENTS: *****************************************************************
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*
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* Routine Description:
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*
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* This routine maps an IO address to system address space.
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*
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* Arguments:
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*
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* bus_type - what type of bus - eisa, mca, isa
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* Iobus_number - which IO bus (for machines with multiple buses).
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* io_address - base device address to be mapped.
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* number_of_bytes - number of bytes for which address is valid.
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* in_io_space - indicates an IO address.
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* mapped_address - indicates whether the address was mapped.
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* This only has meaning if the address returned
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* is non-null.
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*
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* Return Value:
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*
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* Mapped address
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*
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* DEFINITIONS: *************************************************************/
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{
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/* DATA: ********************************************************************/
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PHYSICAL_ADDRESS card_address;
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dUDWord address_space = in_io_space;
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dUDWord address;
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/* CODE: ********************************************************************/
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HalTranslateBusAddress(
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bus_type,
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bus_number,
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io_address,
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&address_space,
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&card_address
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);
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/*
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* Map the device base address into the virtual address space
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* if the address is in memory space.
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*/
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if (!address_space) {
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address = (dUDWord)MmMapIoSpace(
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card_address,
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number_of_bytes,
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dFALSE
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);
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*mapped_address = (dBoolean)((address)?(dTRUE):(dFALSE));
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} else {
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address = (dUDWord)card_address.LowPart;
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}
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return address;
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}
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