NIM_DSP6748/extern/include/hw/hw_dspintc.h

/**
 * \file  hw_dspintc.h
 *
 * \brief Hardware registers and fields for DSP interrupt controller
 */

/*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
*/
/*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
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*    notice, this list of conditions and the following disclaimer.
*
*    Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
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*    distribution.
*
*    Neither the name of Texas Instruments Incorporated nor the names of
*    its contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*
*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
*  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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*/


#ifndef HW_DSPINTC_H_
#define HW_DSPINTC_H_

#ifdef __cplusplus
extern "C" {
#endif

/******************************************************************************
**                      DSP INTC REGISTER OFFSETS
******************************************************************************/
/**
 * \brief	Macros used in conjunction with DSP interrupt controller
 *			base address for register addressing
 *
 * \param	n - Register instance
 *
 * \note	Minimum unit = 1 byte; Registers are 4 bytes
 */
#define DSPINTC_EVTFLAG(n)		(0x00000 + ((n)*4))
#define DSPINTC_EVTSET(n)		(0x00020 + ((n)*4))
#define DSPINTC_EVTCLR(n)		(0x00040 + ((n)*4))
#define DSPINTC_EVTMASK(n)		(0x00080 + ((n)*4))
#define DSPINTC_MEVTFLAG(n)		(0x000A0 + ((n)*4))
#define DSPINTC_EXPMASK(n)		(0x000C0 + ((n)*4))
#define DSPINTC_MEXPFLAG(n)		(0x000E0 + ((n)*4))
#define DSPINTC_INTMUX(n)		(0x00100 + ((n)*4))
#define DSPINTC_INTXSTAT		(0x00180)
#define DSPINTC_INTXCLR			(0x00184)
#define DSPINTC_INTDMASK		(0x00188)
#define DSPINTC_AEGMUX(n)		(0x10140 + ((n)*4))


/******************************************************************************
**                      FIELD DEFINITION MACROS
******************************************************************************/
/**
 * \registers	EVENT REGISTERS
 *
 * \brief		These registers manage the system events that are received by
 *				the controller. These include flag, set, and clear registers
 *				covering all system events.
 *
 * \param		n - Any system event
 *
 * \note		Shifting by (n & 31) ensures 0x1 does not shift by more than
 *				31 bits for system event IDs larger than 31. The proper event
 *				register must first be identified.
 */

/* Event Flag */
#define DSPINTC_EVTFLAG_EF(n)			(0x1 << ((n) & 31))

/* Event Set */
#define DSPINTC_EVTSET_ES(n)			(0x1 << ((n) & 31))

/* Event Clear */
#define DSPINTC_EVTCLR_EC(n)			(0x1 << ((n) & 31))


/**
 * \registers	EVENT COMBINER REGISTERS
 *
 * \brief		These registers allow up to 32 events to be combined into a
 *				single combined event which can then be used by the interrupt
 *				selector.
 *
 * \param		n - Any system event
 *
 * \note		Shifting by (n & 31) ensures 0x1 does not shift by more than
 *				31 bits for system event IDs larger than 31. The proper event
 *				combiner register must first be identified.
 */

/* Event Mask */
#define DSPINTC_EVTMASK_EM(n)			(0x1 << ((n) & 31))

/* Masked Event Flag */
#define DSPINTC_MEVTFLAG_MEF(n)			(0x1 << ((n) & 31))


/**
 * \registers	CPU INTERRUPT SELECTOR REGISTERS
 *
 * \brief		These registers manage which system events trigger the
 *				available CPU interrupts and also provide interrupt exception
 *				information.
 *
 * \param		n - Any CPU maskable interrupt
 */

/* Interrupt Mux */
#define DSPINTC_INTMUX_INTSEL_SHIFT(n)	(((n) & 0x3) * 8)
#define DSPINTC_INTMUX_INTSEL(n)		(0x7F << DSPINTC_INTMUX_INTSEL_SHIFT(n))

/* Interrupt Exception Status */
#define DSPINTC_INTXSTAT_SYSINT			(0xFF000000u)
#define DSPINTC_INTXSTAT_SYSINT_SHIFT	(0x00000018u)
#define DSPINTC_INTXSTAT_CPUINT			(0x00FF0000u)
#define DSPINTC_INTXSTAT_CPUINT_SHIFT	(0x00000010u)
#define DSPINTC_INTXSTAT_DROP			(0x00000001u)
#define DSPINTC_INTXSTAT_DROP_SHIFT		(0x00000000u)

/* Interrupt Exception Clear */
#define DSPINTC_INTXCLR_CLEAR			(0x00000001u)
#define DSPINTC_INTXCLR_CLEAR_SHIFT		(0x00000000u)

/* Dropped Interrupt Mask */
#define DSPINTC_INTDMASK_IDM(n)			(0x1 << (n))


/**
 * \registers	CPU EXCEPTION REGISTERS
 *
 * \brief
 *
 * \param
 *
 * \note		Not yet defined...
 */

/**
 * \registers	ADVANCED EVENT GENERATOR MUX REGISTERS
 *
 * \brief
 *
 * \param
 *
 * \note		Not yet defined...
 */

#ifdef __cplusplus
}
#endif

#endif /* HW_DSPINTC_H_ */