/* ambaMse.c - ARM AMBA mouse driver routines *//* Copyright 1993-2001 Wind River System, Inc. */#include "copyright_wrs.h"/*modification history--------------------01b,12sep01,m_h  fix delays01a,10aug01,m_h  created*//*DESCRIPTIONThis is the driver for ARM's AMBA PrimeCell mouse controller chip.  This driversupports a PS2 type of pointing  device.NOTESThe following macros must be defined in ambakmi.h file: COMMAND_AMBA_MS,DATA_AMBA_MS, STATUS_AMBA_MS. These refer to the I/O base addresses of the various key board controller registers. In addition, the macro MSE_INT_LVL and MSE_INT_VIC must be defined that identifies the interrupt level and vector that is to be used for the mouse interrupts.  Also the I/O access method requires that the macros MS_IN and MS_OUT be defined.*//* includes */#include "vxWorks.h"#include "iv.h"#include "ioLib.h"#include "iosLib.h"#include "memLib.h"#include "tyLib.h"#include "errnoLib.h"#include "wdLib.h"#include "sysLib.h"#include "intLib.h"#include "taskLib.h"#include "ambakmi.h"#include "ugl/bspExt/bspUtil.h"#ifndef COMMAND_AMBA_MS#warning "Mouse driver is not initialized for processor"#else/* forward declarations */LOCAL void  mseHwInit();LOCAL int   mseOpen();LOCAL int   mseClose();LOCAL void  mseTxStart();LOCAL void  ambaMseIntr (MSE_DEVICE  *pDev);LOCAL void  mseDelay(void);#ifdef USE_BSP_API#include <ugl/sysWindML.h>int ambaMseRegBase, ambaMseRegDelta;#endif/********************************************************************************* ambaPs2DevCreate - PS/2 mouse driver initialization routine** This routine creates a device for a PS/2 mouse.  The AMBA hardware is* initialized when the keyboard interface is initialized.** RETURNS: device number, if sucessful; otherwise ERROR.** SEE ALSO: */int ambaPs2DevCreate    (    char         *name            /* name to be associated with device   */    )    {    int            mseDrvNum;    /* device number for this driver */    DEV_HDR     *  pHdr;    MSE_DEVICE  *  pMseDevice;    /* device descriptors */    char        *  pName;#ifdef USE_BSP_API    WINDML_DEVICE *pDev;#endif    /* if device is already present, do not create again */    pHdr = iosDevFind (name, &pName);    if ((pHdr != NULL) && (strcmp (name, pHdr->name) == 0))        return (OK);    pMseDevice = (MSE_DEVICE *)malloc (sizeof (MSE_DEVICE));    /* enable the mouse interrupt */    #ifdef USE_BSP_API    pDev = sysWindMLDevGet (WINDML_POINTER_DEVICE, 0, 0, 0);    ambaMseRegBase = (int)(pDev->pRegBase);    ambaMseRegDelta = pDev->regDelta;    sysWindMLIntConnect (pDev, ambaMseIntr, (int)pMseDevice);#else /* USE_BSP_API */    (void) intConnect (INT_LVL_MOUSE, ambaMseIntr, (int)pMseDevice);#endif /* USE_BSP_API */    /* Install the driver and return installation status */    mseDrvNum = iosDrvInstall(mseOpen, (FUNCPTR) NULL, mseOpen,                             (FUNCPTR) mseClose, tyRead, tyWrite, tyIoctl);    /* Create the channels for this device */    if (tyDevInit(&pMseDevice->ty_dev, 512, 512, (FUNCPTR)mseTxStart) != OK)        return (ERROR);    /* initialize the interface */    mseHwInit ();    /* enable the pointer interrupt */#ifdef USE_BSP_API    sysWindMLIntEnable (pDev);#else /* USE_BSP_API */    intEnable ((int) INT_VEC_MOUSE);#endif /* USE_BSP_API */    /* add the device to the I/O system */    if (iosDevAdd(&pMseDevice->ty_dev.devHdr,name,mseDrvNum) == ERROR)        return (ERROR);    return (mseDrvNum);    }/********************************************************************************* mseHwInit - initialize AMBA hardware for mouse support** This routine initializes the AMBA hardware for a PS/2 mouse.** RETURNS N/A** SEE ALSO: */LOCAL void mseHwInit (void)    {    /* disable everything */    *KMI_CR(KMI1_BASE) = 0;    /* Clock divisor */    *KMI_CR(MOUSE_CLK) = KMI_DIVISOR;            /* Enable mouse and interrupts */    *KMI_CR(MOUSE_CR) = KMI_CR_RXIEN | KMI_CR_KMIEN;    /* send reset */    *KMI_CR(MOUSE_DATA) = 0xFF;    mseDelay();    /* send enable */    *KMI_CR(MOUSE_DATA) = 0xF4;    return;    }/********************************************************************************* mseOpen - open file** This routine opens the PS2 device.* * RETURNS device structure** SEE ALSO: */LOCAL int mseOpen    (    MSE_DEVICE  *dev,    char        *name,    int         mode    )    {    return ((int)dev);    }/*******************************************************************************  mseTxStart - send data to mouse** This routine transmits data to the PS2 device** RETURNS  N/A** SEE ALSO: */LOCAL void mseTxStart    (    MSE_DEVICE  *dev    )    {    char          out_char;    while (tyITx(&dev->ty_dev,&out_char) == OK);    }/******************************************************************************* mseClose - close file**  This routine closes the PS2 device** RETURNS N/A** SEE ALSO: */LOCAL int mseClose    (    MSE_DEVICE  *dev    )    {    return((int)dev);    }/******************************************************************************* ambaMseIntr - handle interrupts** This routine is the PS2 interrupt handler** RETURNS  NA** SEE ALSO: */LOCAL void ambaMseIntr     (    MSE_DEVICE  *pDev          /* device control structure */    )    {    unsigned char   in_char;    if (MS_IN(STATUS_AMBA_MS) & KMI_RXFULL)        {        in_char = MS_IN(DATA_AMBA_MS);        tyIRd (&pDev->ty_dev,in_char);        }    }/******************************************************************************** ambaMsCommand - write command to the mouse.** Write command to the mouse.** RETURNS: OK or ERROR if timed out*/STATUS ambaMsCommand    (    UCHAR command    )    {    MS_OUT (COMMAND_AMBA_MS, command);    return (OK);    }/********************************************************************************* mseDelay - pause* * This routine is called to introduce some delay** RETURNS: N/A** NOMANUAL*/LOCAL void mseDelay(void)    {        taskDelay (sysClkRateGet () >> 3);    }#endif /* COMMAND_AMBA_MS */