PXA255的中斷問(wèn)題

作者：horny　欄目：ARM技術(shù)

pxa255的中斷問(wèn)題
在用ADS調(diào)試pxa255時(shí),乍樣設(shè)置都進(jìn)不了中斷,中斷開(kāi)了,也有中斷向量.
哪位大俠清楚pxa255的中斷處理流程,給講一下,看到好多代碼,跟別的ARM芯片好象不太一樣.

2樓：	>>參與討論
作者： horny 于 2005/8/10 20:40:00 發(fā)布：貧居鬧市無(wú)人問(wèn),我頂貧居鬧市無(wú)人問(wèn),我頂

3樓：

>>參與討論

作者： horny 于 2005/8/11 12:28:00 發(fā)布：

代碼--自己寫(xiě)的喲

#define  _DEFINING_XSINTCTRLAPI
#include "string.h"
#include "systypes.h"
#include "dm_errors.h"
#include "dm.h"
#include "XsCp15.h"
#include "XsIntCtrlApi.h"
#include "XsIntCtrl.h"
#include "platform.h"
#include "cotulla.h"
#include "DM_Debug.h"

/*
*******************************************************************************
*******************************************************************************
    API functions
*******************************************************************************
*******************************************************************************
*/
/*
*******************************************************************************
*
* FUNCTION:         XsIcSWInit
*
* DESCRIPTION:      Init context structure and private tables.
*
* INPUT PARAMETERS: None
*
* RETURNS:          None
*
* GLOBAL EFFECTS:   None
*
* ASSUMPTIONS:      DM ONLY uses IRQ, but owns that
*
* CALLS:
*
* CALLED BY:
*
* PROTOTYPE:        UINT32 XsIcSWInit (void);
*
*******************************************************************************
*/

void XsIcSWInit (void)
{
    // Zero IRQ tables and context structure
    memset (&XsIcIrqHandlerTable[0], 0, sizeof(XsIcIrqHandlerTable));
    memset (&XsIcIrqHandlerParamTable[0], 0, sizeof(XsIcIrqHandlerParamTable));
    memset (&XsIntCtrlContext, 0, sizeof(XsIntCtrlContext));

} // End XsIcSWInit()

/*
*******************************************************************************
*
* FUNCTION:         XsIcHWSetup
*
* DESCRIPTION:      Invoke xsIcInstallInterruptVectors() to give DM CONTROL of
*                   the IRQ interrupts when they occur.  (The FIQ is not used
*                   by the DM, but treated as reserved for debug MONITOR use.)
*                   Verify that there is already appropriate code INSTALLed
*                   at the vector address and that no IRQ interrupts are
*                   enabled (which would indicate that the DM does not "own"
*                   the IRQ interrupt.
*
* INPUT PARAMETERS: None
*
* RETURNS:          Success: 0 (ERR_NONE)
*                   ERR_T_ALREADY_IN_USE: if any IRQ ints are mask-enabled.
*                   ERR_T_NO_HANDLER: No appropriate code already located
*                                     at the IRQ vector address.
*
* GLOBAL EFFECTS:   Logs detected errors
*
* ASSUMPTIONS:      DM ONLY uses IRQ, but owns that
*
* CALLS:            xsIcInstallInterruptVectors()
*
* CALLED BY:
*
* PROTOTYPE:        UINT32 XsIcHWSetup (void);
*
*******************************************************************************
*/

UINT32 XsIcHWSetup (void)
{
    UINT32 status       = ERR_NONE;
    UINT32 copyOfICLR   = XsIntCtrlRegsP->ICLR;
    UINT32 copyOfICMR   = XsIntCtrlRegsP->ICMR;

    // If any IRQ level interrupts are enabled, someone else is using them
    //  and a basic assumption of the DM is violated.
    if ((~copyOfICLR) & (copyOfICMR))   // IRQ level if bit clear in ICLR.
    {
        status = ERR_T_ALREADY_IN_USE;
    }
    else
    {
        // IRQ vector seems to be available.  Now try to INSTALL our handler.
        status = XsIcInstallInterruptVectors();
    }

    if (ERR_NONE == status)
    {
        XsIntCtrlContext.hwInitSucceeded = TRUE;

        // Safe to turn on  application interrupts now.
        XsIcEnableInterruptsIrq();
        IRQ_EnableInterrupts (CPSR_I_Bit|CPSR_F_Bit);
    }
    else
    {
        LOGERROR (XsIntCtrlContext.loggedError, ERR_L_XSIC,
                  ERR_S_XSIC_HWSETUP, status, 0, 0, 0)
    }

    return (status);

} // End XsIcHWSetup ()

/*
*******************************************************************************
*
* FUNCTION:         XsIcRegisterHandler
*
* DESCRIPTION:      Record, for the specified first level interrupt signal,
*                   a handler and parameter to be passed to that handler.
*                   The handler will be invoked with that parameter when
*                   an IRQ occurs with the specified signal being mask-enabled
*                   and active.
*
*                   Typical users: main DMA or GPIO driver, but not users
*                   of those drivers.
*
* INPUT PARAMETERS: sourceID: Iden

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PXA255的中斷問(wèn)題