diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc824x/drivers/epic/epic1.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc824x/drivers/epic/epic1.c | 517 |
1 files changed, 0 insertions, 517 deletions
diff --git a/arch/powerpc/cpu/mpc824x/drivers/epic/epic1.c b/arch/powerpc/cpu/mpc824x/drivers/epic/epic1.c deleted file mode 100644 index ecbb42d0d6..0000000000 --- a/arch/powerpc/cpu/mpc824x/drivers/epic/epic1.c +++ /dev/null @@ -1,517 +0,0 @@ -/************************************************** - * - * copyright @ motorola, 1999 - * - *************************************************/ -#include <mpc824x.h> -#include <common.h> -#include "epic.h" - - -#define PRINT(format, args...) printf(format , ## args) - -typedef void (*VOIDFUNCPTR) (void); /* ptr to function returning void */ -struct SrcVecTable SrcVecTable[MAXVEC] = /* Addr/Vector cross-reference tbl */ - { - { EPIC_EX_INT0_VEC_REG, "External Direct/Serial Source 0"}, - { EPIC_EX_INT1_VEC_REG, "External Direct/Serial Source 1"}, - { EPIC_EX_INT2_VEC_REG, "External Direct/Serial Source 2"}, - { EPIC_EX_INT3_VEC_REG, "External Direct/Serial Source 3"}, - { EPIC_EX_INT4_VEC_REG, "External Direct/Serial Source 4"}, - - { EPIC_SR_INT5_VEC_REG, "External Serial Source 5"}, - { EPIC_SR_INT6_VEC_REG, "External Serial Source 6"}, - { EPIC_SR_INT7_VEC_REG, "External Serial Source 7"}, - { EPIC_SR_INT8_VEC_REG, "External Serial Source 8"}, - { EPIC_SR_INT9_VEC_REG, "External Serial Source 9"}, - { EPIC_SR_INT10_VEC_REG, "External Serial Source 10"}, - { EPIC_SR_INT11_VEC_REG, "External Serial Source 11"}, - { EPIC_SR_INT12_VEC_REG, "External Serial Source 12"}, - { EPIC_SR_INT13_VEC_REG, "External Serial Source 13"}, - { EPIC_SR_INT14_VEC_REG, "External Serial Source 14"}, - { EPIC_SR_INT15_VEC_REG, "External Serial Source 15"}, - - { EPIC_I2C_INT_VEC_REG, "Internal I2C Source"}, - { EPIC_DMA0_INT_VEC_REG, "Internal DMA0 Source"}, - { EPIC_DMA1_INT_VEC_REG, "Internal DMA1 Source"}, - { EPIC_MSG_INT_VEC_REG, "Internal Message Source"}, - }; - -VOIDFUNCPTR intVecTbl[MAXVEC]; /* Interrupt vector table */ - - -/**************************************************************************** -* epicInit - Initialize the EPIC registers -* -* This routine resets the Global Configuration Register, thus it: -* - Disables all interrupts -* - Sets epic registers to reset values -* - Sets the value of the Processor Current Task Priority to the -* highest priority (0xF). -* epicInit then sets the EPIC operation mode to Mixed Mode (vs. Pass -* Through or 8259 compatible mode). -* -* If IRQType (input) is Direct IRQs: -* - IRQType is written to the SIE bit of the EPIC Interrupt -* Configuration register (ICR). -* - clkRatio is ignored. -* If IRQType is Serial IRQs: -* - both IRQType and clkRatio will be written to the ICR register -*/ - -void epicInit - ( - unsigned int IRQType, /* Direct or Serial */ - unsigned int clkRatio /* Clk Ratio for Serial IRQs */ - ) - { - ULONG tmp; - - tmp = sysEUMBBARRead(EPIC_GLOBAL_REG); - tmp |= 0xa0000000; /* Set the Global Conf. register */ - sysEUMBBARWrite(EPIC_GLOBAL_REG, tmp); - /* - * Wait for EPIC to reset - CLH - */ - while( (sysEUMBBARRead(EPIC_GLOBAL_REG) & 0x80000000) == 1); - sysEUMBBARWrite(EPIC_GLOBAL_REG, 0x20000000); - tmp = sysEUMBBARRead(EPIC_INT_CONF_REG); /* Read interrupt conf. reg */ - - if (IRQType == EPIC_DIRECT_IRQ) /* direct mode */ - sysEUMBBARWrite(EPIC_INT_CONF_REG, tmp & 0xf7ffffff); - else /* Serial mode */ - { - tmp = (clkRatio << 28) | 0x08000000; /* Set clock ratio */ - sysEUMBBARWrite(EPIC_INT_CONF_REG, tmp); - } - - while (epicIntAck() != 0xff) /* Clear all pending interrupts */ - epicEOI(); -} - -/**************************************************************************** - * epicIntEnable - Enable an interrupt source - * - * This routine clears the mask bit of an external, an internal or - * a Timer register to enable the interrupt. - * - * RETURNS: None - */ -void epicIntEnable(int intVec) -{ - ULONG tmp; - ULONG srAddr; - - srAddr = SrcVecTable[intVec].srcAddr; /* Retrieve src Vec/Prio register */ - tmp = sysEUMBBARRead(srAddr); - tmp &= ~EPIC_VEC_PRI_MASK; /* Clear the mask bit */ - tmp |= (EPIC_VEC_PRI_DFLT_PRI << 16); /* Set priority to Default - CLH */ - tmp |= intVec; /* Set Vector number */ - sysEUMBBARWrite(srAddr, tmp); - - return; - } - -/**************************************************************************** - * epicIntDisable - Disable an interrupt source - * - * This routine sets the mask bit of an external, an internal or - * a Timer register to disable the interrupt. - * - * RETURNS: OK or ERROR - * - */ - -void epicIntDisable - ( - int intVec /* Interrupt vector number */ - ) - { - - ULONG tmp, srAddr; - - srAddr = SrcVecTable[intVec].srcAddr; - tmp = sysEUMBBARRead(srAddr); - tmp |= 0x80000000; /* Set the mask bit */ - sysEUMBBARWrite(srAddr, tmp); - return; - } - -/**************************************************************************** - * epicIntSourceConfig - Set properties of an interrupt source - * - * This function sets interrupt properites (Polarity, Sense, Interrupt - * Prority, and Interrupt Vector) of an Interrupt Source. The properties - * can be set when the current source is not in-request or in-service, - * which is determined by the Activity bit. This routine return ERROR - * if the the Activity bit is 1 (in-request or in-service). - * - * This function assumes that the Source Vector/Priority register (input) - * is a valid address. - * - * RETURNS: OK or ERROR - */ - -int epicIntSourceConfig - ( - int Vect, /* interrupt source vector number */ - int Polarity, /* interrupt source polarity */ - int Sense, /* interrupt source Sense */ - int Prio /* interrupt source priority */ - ) - - { - ULONG tmp, newVal; - ULONG actBit, srAddr; - - srAddr = SrcVecTable[Vect].srcAddr; - tmp = sysEUMBBARRead(srAddr); - actBit = (tmp & 40000000) >> 30; /* retrieve activity bit - bit 30 */ - if (actBit == 1) - return ERROR; - - tmp &= 0xff30ff00; /* Erase previously set P,S,Prio,Vector bits */ - newVal = (Polarity << 23) | (Sense << 22) | (Prio << 16) | Vect; - sysEUMBBARWrite(srAddr, tmp | newVal ); - return (OK); - } - -/**************************************************************************** - * epicIntAck - acknowledge an interrupt - * - * This function reads the Interrupt acknowldge register and return - * the vector number of the highest pending interrupt. - * - * RETURNS: Interrupt Vector number. - */ - -unsigned int epicIntAck(void) -{ - return(sysEUMBBARRead( EPIC_PROC_INT_ACK_REG )); -} - -/**************************************************************************** - * epicEOI - signal an end of interrupt - * - * This function writes 0x0 to the EOI register to signal end of interrupt. - * It is usually called after an interrupt routine is served. - * - * RETURNS: None - */ - -void epicEOI(void) - { - sysEUMBBARWrite(EPIC_PROC_EOI_REG, 0x0); - } - -/**************************************************************************** - * epicCurTaskPrioSet - sets the priority of the Processor Current Task - * - * This function should be called after epicInit() to lower the priority - * of the processor current task. - * - * RETURNS: OK or ERROR - */ - -int epicCurTaskPrioSet - ( - int prioNum /* New priority value */ - ) - { - - if ( (prioNum < 0) || (prioNum > 0xF)) - return ERROR; - sysEUMBBARWrite(EPIC_PROC_CTASK_PRI_REG, prioNum); - return OK; - } - - -/************************************************************************ - * function: epicIntTaskGet - * - * description: Get value of processor current interrupt task priority register - * - * note: - ***********************************************************************/ -unsigned char epicIntTaskGet() -{ - /* get the interrupt task priority register */ - ULONG reg; - unsigned char rec; - - reg = sysEUMBBARRead( EPIC_PROC_CTASK_PRI_REG ); - rec = ( reg & 0x0F ); - return rec; -} - - -/************************************************************** - * function: epicISR - * - * description: EPIC service routine called by the core exception - * at 0x500 - * - * note: - **************************************************************/ -unsigned int epicISR(void) -{ - return 0; -} - - -/************************************************************ - * function: epicModeGet - * - * description: query EPIC mode, return 0 if pass through mode - * return 1 if mixed mode - * - * note: - *************************************************************/ -unsigned int epicModeGet(void) -{ - ULONG val; - - val = sysEUMBBARRead( EPIC_GLOBAL_REG ); - return (( val & 0x20000000 ) >> 29); -} - - -/********************************************* - * function: epicConfigGet - * - * description: Get the EPIC interrupt Configuration - * return 0 if not error, otherwise return 1 - * - * note: - ********************************************/ -void epicConfigGet( unsigned int *clkRatio, unsigned int *serEnable) -{ - ULONG val; - - val = sysEUMBBARRead( EPIC_INT_CONF_REG ); - *clkRatio = ( val & 0x70000000 ) >> 28; - *serEnable = ( val & 0x8000000 ) >> 27; -} - - -/******************************************************************* - * sysEUMBBARRead - Read a 32-bit EUMBBAR register - * - * This routine reads the content of a register in the Embedded - * Utilities Memory Block, and swaps to big endian before returning - * the value. - * - * RETURNS: The content of the specified EUMBBAR register. - */ - -ULONG sysEUMBBARRead - ( - ULONG regNum - ) - { - ULONG temp; - - temp = *(ULONG *) (CONFIG_SYS_EUMB_ADDR + regNum); - return ( LONGSWAP(temp)); - } - -/******************************************************************* - * sysEUMBBARWrite - Write a 32-bit EUMBBAR register - * - * This routine swaps the value to little endian then writes it to - * a register in the Embedded Utilities Memory Block address space. - * - * RETURNS: N/A - */ - -void sysEUMBBARWrite - ( - ULONG regNum, /* EUMBBAR register address */ - ULONG regVal /* Value to be written */ - ) - { - - *(ULONG *) (CONFIG_SYS_EUMB_ADDR + regNum) = LONGSWAP(regVal); - return ; - } - - -/******************************************************** - * function: epicVendorId - * - * description: return the EPIC Vendor Identification - * register: - * - * siliccon version, device id, and vendor id - * - * note: - ********************************************************/ -void epicVendorId - ( - unsigned int *step, - unsigned int *devId, - unsigned int *venId - ) - { - ULONG val; - val = sysEUMBBARRead( EPIC_VENDOR_ID_REG ); - *step = ( val & 0x00FF0000 ) >> 16; - *devId = ( val & 0x0000FF00 ) >> 8; - *venId = ( val & 0x000000FF ); - } - -/************************************************** - * function: epicFeatures - * - * description: return the number of IRQ supported, - * number of CPU, and the version of the - * OpenEPIC - * - * note: - *************************************************/ -void epicFeatures - ( - unsigned int *noIRQs, - unsigned int *noCPUs, - unsigned int *verId - ) - { - ULONG val; - - val = sysEUMBBARRead( EPIC_FEATURES_REG ); - *noIRQs = ( val & 0x07FF0000 ) >> 16; - *noCPUs = ( val & 0x00001F00 ) >> 8; - *verId = ( val & 0x000000FF ); -} - - -/********************************************************* - * function: epciTmFrequncySet - * - * description: Set the timer frequency reporting register - ********************************************************/ -void epicTmFrequencySet( unsigned int frq ) -{ - sysEUMBBARWrite(EPIC_TM_FREQ_REG, frq); -} - -/******************************************************* - * function: epicTmFrequncyGet - * - * description: Get the current value of the Timer Frequency - * Reporting register - * - ******************************************************/ -unsigned int epicTmFrequencyGet(void) -{ - return( sysEUMBBARRead(EPIC_TM_FREQ_REG)) ; -} - - -/**************************************************** - * function: epicTmBaseSet - * - * description: Set the #n global timer base count register - * return 0 if no error, otherwise return 1. - * - * note: - ****************************************************/ -unsigned int epicTmBaseSet - ( - ULONG srcAddr, /* Address of the Timer Base register */ - unsigned int cnt, /* Base count */ - unsigned int inhibit /* 1 - count inhibit */ - ) -{ - - unsigned int val = 0x80000000; - /* First inhibit counting the timer */ - sysEUMBBARWrite(srcAddr, val) ; - - /* set the new value */ - val = (cnt & 0x7fffffff) | ((inhibit & 0x1) << 31); - sysEUMBBARWrite(srcAddr, val) ; - return 0; -} - -/*********************************************************************** - * function: epicTmBaseGet - * - * description: Get the current value of the global timer base count register - * return 0 if no error, otherwise return 1. - * - * note: - ***********************************************************************/ -unsigned int epicTmBaseGet( ULONG srcAddr, unsigned int *val ) -{ - *val = sysEUMBBARRead( srcAddr ); - *val = *val & 0x7fffffff; - return 0; -} - -/*********************************************************** - * function: epicTmCountGet - * - * description: Get the value of a given global timer - * current count register - * return 0 if no error, otherwise return 1 - * note: - **********************************************************/ -unsigned int epicTmCountGet( ULONG srcAddr, unsigned int *val ) -{ - *val = sysEUMBBARRead( srcAddr ); - *val = *val & 0x7fffffff; - return 0; -} - - -/*********************************************************** - * function: epicTmInhibit - * - * description: Stop counting of a given global timer - * return 0 if no error, otherwise return 1 - * - * note: - ***********************************************************/ -unsigned int epicTmInhibit( unsigned int srcAddr ) -{ - ULONG val; - - val = sysEUMBBARRead( srcAddr ); - val |= 0x80000000; - sysEUMBBARWrite( srcAddr, val ); - return 0; -} - -/****************************************************************** - * function: epicTmEnable - * - * description: Enable counting of a given global timer - * return 0 if no error, otherwise return 1 - * - * note: - *****************************************************************/ -unsigned int epicTmEnable( ULONG srcAddr ) -{ - ULONG val; - - val = sysEUMBBARRead( srcAddr ); - val &= 0x7fffffff; - sysEUMBBARWrite( srcAddr, val ); - return 0; -} - -void epicSourcePrint(int Vect) - { - ULONG srcVal; - - srcVal = sysEUMBBARRead(SrcVecTable[Vect].srcAddr); - PRINT("%s\n", SrcVecTable[Vect].srcName); - PRINT("Address = 0x%lx\n", SrcVecTable[Vect].srcAddr); - PRINT("Vector = %ld\n", (srcVal & 0x000000FF) ); - PRINT("Mask = %ld\n", srcVal >> 31); - PRINT("Activitiy = %ld\n", (srcVal & 40000000) >> 30); - PRINT("Polarity = %ld\n", (srcVal & 0x00800000) >> 23); - PRINT("Sense = %ld\n", (srcVal & 0x00400000) >> 22); - PRINT("Priority = %ld\n", (srcVal & 0x000F0000) >> 16); - } |
