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OS/2 Shareware BBS: 10 Tools
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ddkx86v1.zip
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DDKX86
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VDMA.H
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1995-04-14
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2KB
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56 lines
/*DDK*************************************************************************/
/* */
/* COPYRIGHT Copyright (C) 1995 IBM Corporation */
/* */
/* The following IBM OS/2 WARP source code is provided to you solely for */
/* the purpose of assisting you in your development of OS/2 WARP device */
/* drivers. You may use this code in accordance with the IBM License */
/* Agreement provided in the IBM Device Driver Source Kit for OS/2. This */
/* Copyright statement may not be removed. */
/* */
/*****************************************************************************/
/*** VDMA.H
*
* SCCSID = @(#)vdma.h 13.1 90/05/21
*
* MVDM Virtual DMA Exported Definitions
*
* For include file hierarchy, see MVDM.H
*
*
* MODIFICATION HISTORY
* 90/05/21 SB Created.
* 92/11/03 JDM Added VDMA Request VDD defines
* 93/03/06 JAG Changed DMAREQINFO.ri_ulReserved to .ri_Address
*/
/* VDMA defines */
#define VDD_DMA_MASKOFF 0 // Mask off notification to VDD
#define VDD_DMA_MASK 1 // Mask on notification to VDD
#define VDMA_NAME "VDMA"
#define VDMA_GET_INFO_CMD 0
#define VDMA_REGISTER_VXGA 1
typedef struct dmaChnlInfo_s {
ULONG ch_addrBase;
USHORT ch_cbCount;
USHORT ch_txMode;
} DMACHNLINFO;
typedef DMACHNLINFO *PDMACHNLINFO;
typedef struct dmaReqInfo_s {
ULONG ri_iChannel;
PFNDEVREQ ri_Address;
} DMAREQINFO;
typedef DMAREQINFO *PDMAREQINFO;
typedef BOOL (HOOKENTRY *PFNDMA)(HVDM,ULONG);
/* VDMA function prototypes */
BOOL VDHENTRY VDHRegisterDMAChannel(ULONG,PFNDMA);
VOID VDHENTRY VDHCallOutDMA(VOID);