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Commit message (Expand)AuthorAge
* acpi: unneccessary to scan the PCI bus already scannedyakui.zhao@intel.com2008-04-15
* asmlinkage_protect replaces prevent_tail_callRoland McGrath2008-04-10
* x86: Simplify cpu_idle_waitVenki Pallipadi2008-04-10
* pop previous section in alternative.cSteven Rostedt2008-04-09
* x86: fix call to set_cyc2ns_scale() from time_cpufreq_notifier()Karsten Wiese2008-04-07
* revert "x86: tsc prevent time going backwards"Ingo Molnar2008-04-07
* Fix booting pentium+ with dodgy TSCRusty Russell2008-04-06
* x86: revert assign IRQs to hpet timerThomas Gleixner2008-04-04
* x86: tsc prevent time going backwardsThomas Gleixner2008-04-04
* xen: Clear PG_pinned in release_{pt,pd}()Mark McLoughlin2008-04-04
* xen: Do not pin/unpin PMD pagesMark McLoughlin2008-04-04
* xen: refactor xen_{alloc,release}_{pt,pd}()Mark McLoughlin2008-04-04
* x86, agpgart: scary messages are fortunately obsoletePavel Machek2008-04-04
* x86: print message if nmi_watchdog=2 cannot be enabledIngo Molnar2008-04-04
* x86: fix nmi_watchdog=2 on Pentium-D CPUsIngo Molnar2008-04-04
* x86 ptrace: avoid unnecessary wrmsrRoland McGrath2008-04-03
* vmcoreinfo: add the symbol "phys_base"Ken'ichi Ohmichi2008-04-02
* Avoid false positive warnings in kmap_atomic_prot() with DEBUG_HIGHMEMAndrew Morton2008-03-28
* lguest: comment documentation update.Rusty Russell2008-03-27
* x86: prefetch fix #2Ingo Molnar2008-03-27
* xen: fix UP setup of shared_infoJeremy Fitzhardinge2008-03-27
* xen: fix RMW when unmasking eventsJeremy Fitzhardinge2008-03-27
* x86: stricter check in follow_huge_addr()Christoph Lameter2008-03-27
* rdc321x: GPIO routines bugfixesFlorian Fainelli2008-03-27
* x86: ptrace.c: fix defined-but-unused warningsAndrew Morton2008-03-27
* x86: fix prefetch workaroundIngo Molnar2008-03-27
* x86: fix performance drop for glxSuresh Siddha2008-03-26
* x86: fix trim mtrr not to setup_memory two timesYinghai Lu2008-03-26
* x86: GEODE: add missing module.h includeAndres Salomon2008-03-26
* x86, cpufreq: fix Speedfreq-SMI call that clobbers ECXStephan Diestelhorst2008-03-26
* x86: fix memoryless node oops during bootYinghai Lu2008-03-26
* x86: add dmi quirk for io_delayIngo Molnar2008-03-26
* x86: convert mtrr/generic.c to kernel-docRandy Dunlap2008-03-26
* KVM: MMU: Fix memory leak on guest demand faultsAvi Kivity2008-03-25
* KVM: VMX: convert init_rmode_tss() to slots_lockMarcelo Tosatti2008-03-25
* KVM: MMU: handle page removal with shadow mappingMarcelo Tosatti2008-03-25
* KVM: MMU: Fix is_rmap_pte() with io ptesAvi Kivity2008-03-25
* KVM: VMX: Restore tss even on x86_64Avi Kivity2008-03-25
* x86-32: Pass the full resource data to ioremap()Linus Torvalds2008-03-24
* x86: revert: reserve dma32 early for gartThomas Gleixner2008-03-22
* x86_64: free_bootmem should take physYinghai Lu2008-03-21
* x86: trim mtrr don't close gap for resource allocation.Yinghai Lu2008-03-21
* x86: fix reboot problem with Dell Optiplex 745, 0KW626 boardHeinz-Ado Arnolds2008-03-21
* x86: fix fault_msg nul terminationJiri Slaby2008-03-21
* x86: fix long standing bug with usb after hibernation with 4GB ramPavel Machek2008-03-21
* x86: hpet clock enable quirk on nVidia nForce 430Zbigniew Luszpinski2008-03-21
* x86: reserve dma32 early for gartYinghai Lu2008-03-21
* x86: add the DFF (Desktop Form Factor) Dell Optiplex 745 to the reboot errata...Coleman Kane2008-03-21
* x86/visws: fix printk format warningsRandy Dunlap2008-03-21
* x86: tight online check in setup_per_cpu_areasYinghai Lu2008-03-21
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-16 06:08:16 -0400
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/******************************************************************************
 *
 * Name:	ski2c.c
 * Project:	Gigabit Ethernet Adapters, TWSI-Module
 * Version:	$Revision: 1.59 $
 * Date:	$Date: 2003/10/20 09:07:25 $
 * Purpose:	Functions to access Voltage and Temperature Sensor
 *
 ******************************************************************************/

/******************************************************************************
 *
 *	(C)Copyright 1998-2002 SysKonnect.
 *	(C)Copyright 2002-2003 Marvell.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	The information in this file is provided "AS IS" without warranty.
 *
 ******************************************************************************/

/*
 *	I2C Protocol
 */
#if (defined(DEBUG) || ((!defined(LINT)) && (!defined(SK_SLIM))))
static const char SysKonnectFileId[] =
	"@(#) $Id: ski2c.c,v 1.59 2003/10/20 09:07:25 rschmidt Exp $ (C) Marvell. ";
#endif

#include "h/skdrv1st.h"		/* Driver Specific Definitions */
#include "h/lm80.h"
#include "h/skdrv2nd.h"		/* Adapter Control- and Driver specific Def. */

#ifdef __C2MAN__
/*
	I2C protocol implementation.

	General Description:

	The I2C protocol is used for the temperature sensors and for
	the serial EEPROM which hold the configuration.

	This file covers functions that allow to read write and do
	some bulk requests a specified I2C address.

	The Genesis has 2 I2C buses. One for the EEPROM which holds
	the VPD Data and one for temperature and voltage sensor.
	The following picture shows the I2C buses, I2C devices and
	their control registers.

	Note: The VPD functions are in skvpd.c
.
.	PCI Config I2C Bus for VPD Data:
.
.		      +------------+
.		      | VPD EEPROM |
.		      +------------+
.			     |
.			     | <-- I2C
.			     |
.		 +-----------+-----------+
.		 |			 |
.	+-----------------+	+-----------------+
.	| PCI_VPD_ADR_REG |	| PCI_VPD_DAT_REG |
.	+-----------------+	+-----------------+
.
.
.	I2C Bus for LM80 sensor:
.
.			+-----------------+
.			| Temperature and |
.			| Voltage Sensor  |
.			| 	LM80	  |
.			+-----------------+
.				|
.				|
.			I2C --> |
.				|
.			     +----+
.	     +-------------->| OR |<--+
.	     |		     +----+   |
.     +------+------+		      |
.     |		    |		      |
. +--------+	+--------+	+----------+
. | B2_I2C |	| B2_I2C |	|  B2_I2C  |
. | _CTRL  |	| _DATA  |	|   _SW    |
. +--------+	+--------+	+----------+
.
	The I2C bus may be driven by the B2_I2C_SW or by the B2_I2C_CTRL
	and B2_I2C_DATA registers.
	For driver software it is recommended to use the I2C control and
	data register, because I2C bus timing is done by the ASIC and
	an interrupt may be received when the I2C request is completed.

	Clock Rate Timing:			MIN	MAX	generated by
		VPD EEPROM:			50 kHz	100 kHz		HW
		LM80 over I2C Ctrl/Data reg.	50 kHz	100 kHz		HW
		LM80 over B2_I2C_SW register	0	400 kHz		SW

	Note:	The clock generated by the hardware is dependend on the
		PCI clock. If the PCI bus clock is 33 MHz, the I2C/VPD
		clock is 50 kHz.
 */
intro()
{}
#endif

#ifdef SK_DIAG
/*
 * I2C Fast Mode timing values used by the LM80.
 * If new devices are added to the I2C bus the timing values have to be checked.
 */
#ifndef I2C_SLOW_TIMING
#define	T_CLK_LOW			1300L	/* clock low time in ns */
#define	T_CLK_HIGH		 	 600L	/* clock high time in ns */
#define T_DATA_IN_SETUP		 100L	/* data in Set-up Time */
#define T_START_HOLD		 600L	/* start condition hold time */
#define T_START_SETUP		 600L	/* start condition Set-up time */
#define	T_STOP_SETUP		 600L	/* stop condition Set-up time */
#define T_BUS_IDLE			1300L	/* time the bus must free after Tx */
#define	T_CLK_2_DATA_OUT	 900L	/* max. clock low to data output valid */
#else	/* I2C_SLOW_TIMING */
/* I2C Standard Mode Timing */
#define	T_CLK_LOW			4700L	/* clock low time in ns */
#define	T_CLK_HIGH			4000L	/* clock high time in ns */
#define T_DATA_IN_SETUP		 250L	/* data in Set-up Time */
#define T_START_HOLD		4000L	/* start condition hold time */
#define T_START_SETUP		4700L	/* start condition Set-up time */
#define	T_STOP_SETUP		4000L	/* stop condition Set-up time */
#define T_BUS_IDLE			4700L	/* time the bus must free after Tx */
#endif	/* !I2C_SLOW_TIMING */

#define NS2BCLK(x)	(((x)*125)/10000)

/*
 * I2C Wire Operations
 *
 * About I2C_CLK_LOW():
 *
 * The Data Direction bit (I2C_DATA_DIR) has to be set to input when setting
 * clock to low, to prevent the ASIC and the I2C data client from driving the
 * serial data line simultaneously (ASIC: last bit of a byte = '1', I2C client
 * send an 'ACK'). See also Concentrator Bugreport No. 10192.
 */
#define I2C_DATA_HIGH(IoC)	SK_I2C_SET_BIT(IoC, I2C_DATA)
#define	I2C_DATA_LOW(IoC)	SK_I2C_CLR_BIT(IoC, I2C_DATA)
#define	I2C_DATA_OUT(IoC)	SK_I2C_SET_BIT(IoC, I2C_DATA_DIR)
#define	I2C_DATA_IN(IoC)	SK_I2C_CLR_BIT(IoC, I2C_DATA_DIR | I2C_DATA)
#define	I2C_CLK_HIGH(IoC)	SK_I2C_SET_BIT(IoC, I2C_CLK)
#define	I2C_CLK_LOW(IoC)	SK_I2C_CLR_BIT(IoC, I2C_CLK | I2C_DATA_DIR)
#define	I2C_START_COND(IoC)	SK_I2C_CLR_BIT(IoC, I2C_CLK)

#define NS2CLKT(x)	((x*125L)/10000)

/*--------------- I2C Interface Register Functions --------------- */

/*
 * sending one bit
 */
void SkI2cSndBit(
SK_IOC	IoC,	/* I/O Context */
SK_U8	Bit)	/* Bit to send */
{
	I2C_DATA_OUT(IoC);
	if (Bit) {
		I2C_DATA_HIGH(IoC);
	}
	else {
		I2C_DATA_LOW(IoC);
	}
	SkDgWaitTime(IoC, NS2BCLK(T_DATA_IN_SETUP));
	I2C_CLK_HIGH(IoC);
	SkDgWaitTime(IoC, NS2BCLK(T_CLK_HIGH));
	I2C_CLK_LOW(IoC);
}	/* SkI2cSndBit*/


/*
 * Signal a start to the I2C Bus.
 *
 * A start is signaled when data goes to low in a high clock cycle.
 *
 * Ends with Clock Low.
 *
 * Status: not tested
 */
void SkI2cStart(
SK_IOC	IoC)	/* I/O Context */
{
	/* Init data and Clock to output lines */
	/* Set Data high */
	I2C_DATA_OUT(IoC);
	I2C_DATA_HIGH(IoC);
	/* Set Clock high */
	I2C_CLK_HIGH(IoC);

	SkDgWaitTime(IoC, NS2BCLK(T_START_SETUP));

	/* Set Data Low */
	I2C_DATA_LOW(IoC);

	SkDgWaitTime(IoC, NS2BCLK(T_START_HOLD));

	/* Clock low without Data to Input */
	I2C_START_COND(IoC);

	SkDgWaitTime(IoC, NS2BCLK(T_CLK_LOW));
}	/* SkI2cStart */


void SkI2cStop(
SK_IOC	IoC)	/* I/O Context */
{
	/* Init data and Clock to output lines */
	/* Set Data low */
	I2C_DATA_OUT(IoC);
	I2C_DATA_LOW(IoC);

	SkDgWaitTime(IoC, NS2BCLK(T_CLK_2_DATA_OUT));

	/* Set Clock high */
	I2C_CLK_HIGH(IoC);

	SkDgWaitTime(IoC, NS2BCLK(T_STOP_SETUP));

	/*
	 * Set Data High:	Do it by setting the Data Line to Input.
	 *			Because of a pull up resistor the Data Line
	 *			floods to high.
	 */
	I2C_DATA_IN(IoC);

	/*
	 *	When I2C activity is stopped
	 *	 o	DATA should be set to input and
	 *	 o	CLOCK should be set to high!
	 */
	SkDgWaitTime(IoC, NS2BCLK(T_BUS_IDLE));
}	/* SkI2cStop */


/*
 * Receive just one bit via the I2C bus.
 *
 * Note:	Clock must be set to LOW before calling this function.
 *
 * Returns The received bit.
 */
int SkI2cRcvBit(
SK_IOC	IoC)	/* I/O Context */
{
	int	Bit;
	SK_U8	I2cSwCtrl;

	/* Init data as input line */
	I2C_DATA_IN(IoC);

	SkDgWaitTime(IoC, NS2BCLK(T_CLK_2_DATA_OUT));

	I2C_CLK_HIGH(IoC);

	SkDgWaitTime(IoC, NS2BCLK(T_CLK_HIGH));

	SK_I2C_GET_SW(IoC, &I2cSwCtrl);
	
	Bit = (I2cSwCtrl & I2C_DATA) ? 1 : 0;

	I2C_CLK_LOW(IoC);
	SkDgWaitTime(IoC, NS2BCLK(T_CLK_LOW-T_CLK_2_DATA_OUT));

	return(Bit);
}	/* SkI2cRcvBit */


/*
 * Receive an ACK.
 *
 * returns	0 If acknowledged
 *		1 in case of an error
 */
int SkI2cRcvAck(
SK_IOC	IoC)	/* I/O Context */
{
	/*
	 * Received bit must be zero.
	 */
	return(SkI2cRcvBit(IoC) != 0);
}	/* SkI2cRcvAck */


/*
 * Send an NACK.
 */
void SkI2cSndNAck(
SK_IOC	IoC)	/* I/O Context */
{
	/*
	 * Received bit must be zero.
	 */
	SkI2cSndBit(IoC, 1);
}	/* SkI2cSndNAck */


/*
 * Send an ACK.
 */
void SkI2cSndAck(
SK_IOC IoC)	/* I/O Context */
{
	/*
	 * Received bit must be zero.
	 */
	SkI2cSndBit(IoC, 0);
}	/* SkI2cSndAck */


/*
 * Send one byte to the I2C device and wait for ACK.
 *
 * Return acknowleged status.
 */
int SkI2cSndByte(
SK_IOC	IoC,	/* I/O Context */
int		Byte)	/* byte to send */
{
	int	i;

	for (i = 0; i < 8; i++) {
		if (Byte & (1<<(7-i))) {
			SkI2cSndBit(IoC, 1);
		}
		else {
			SkI2cSndBit(IoC, 0);
		}
	}

	return(SkI2cRcvAck(IoC));
}	/* SkI2cSndByte */


/*
 * Receive one byte and ack it.
 *
 * Return byte.
 */
int SkI2cRcvByte(
SK_IOC	IoC,	/* I/O Context */
int		Last)	/* Last Byte Flag */
{
	int	i;
	int	Byte = 0;

	for (i = 0; i < 8; i++) {
		Byte <<= 1;
		Byte |= SkI2cRcvBit(IoC);
	}

	if (Last) {
		SkI2cSndNAck(IoC);
	}
	else {
		SkI2cSndAck(IoC);
	}

	return(Byte);
}	/* SkI2cRcvByte */


/*
 * Start dialog and send device address
 *
 * Return 0 if acknowleged, 1 in case of an error
 */
int	SkI2cSndDev(
SK_IOC	IoC,	/* I/O Context */
int		Addr,	/* Device Address */
int		Rw)		/* Read / Write Flag */
{
	SkI2cStart(IoC);
	Rw = ~Rw;
	Rw &= I2C_WRITE;
	return(SkI2cSndByte(IoC, (Addr<<1) | Rw));
}	/* SkI2cSndDev */

#endif /* SK_DIAG */

/*----------------- I2C CTRL Register Functions ----------*/

/*
 * waits for a completion of an I2C transfer
 *
 * returns	0:	success, transfer completes
 *			1:	error,	 transfer does not complete, I2C transfer
 *						 killed, wait loop terminated.
 */
static int	SkI2cWait(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC,	/* I/O Context */
int		Event)	/* complete event to wait for (I2C_READ or I2C_WRITE) */
{
	SK_U64	StartTime;
	SK_U64	CurrentTime;
	SK_U32	I2cCtrl;

	StartTime = SkOsGetTime(pAC);
	
	do {
		CurrentTime = SkOsGetTime(pAC);

		if (CurrentTime - StartTime > SK_TICKS_PER_SEC / 8) {
			
			SK_I2C_STOP(IoC);
#ifndef SK_DIAG
			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_I2C_E002, SKERR_I2C_E002MSG);
#endif /* !SK_DIAG */
			return(1);
		}
		
		SK_I2C_GET_CTL(IoC, &I2cCtrl);

#ifdef xYUKON_DBG
		printf("StartTime=%lu, CurrentTime=%lu\n",
			StartTime, CurrentTime);
		if (kbhit()) {
			return(1);
		}
#endif /* YUKON_DBG */
	
	} while ((I2cCtrl & I2C_FLAG) == (SK_U32)Event << 31);

	return(0);
}	/* SkI2cWait */


/*
 * waits for a completion of an I2C transfer
 *
 * Returns
 *	Nothing
 */
void SkI2cWaitIrq(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC)	/* I/O Context */
{
	SK_SENSOR	*pSen;
	SK_U64		StartTime;
	SK_U32		IrqSrc;

	pSen = &pAC->I2c.SenTable[pAC->I2c.CurrSens];

	if (pSen->SenState == SK_SEN_IDLE) {
		return;
	}

	StartTime = SkOsGetTime(pAC);
	
	do {
		if (SkOsGetTime(pAC) - StartTime > SK_TICKS_PER_SEC / 8) {
			
			SK_I2C_STOP(IoC);
#ifndef SK_DIAG
			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_I2C_E016, SKERR_I2C_E016MSG);
#endif /* !SK_DIAG */
			return;
		}
		
		SK_IN32(IoC, B0_ISRC, &IrqSrc);

	} while ((IrqSrc & IS_I2C_READY) == 0);

	pSen->SenState = SK_SEN_IDLE;
	return;
}	/* SkI2cWaitIrq */

/*
 * writes a single byte or 4 bytes into the I2C device
 *
 * returns	0:	success
 *			1:	error
 */
static int SkI2cWrite(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* I/O Context */
SK_U32	I2cData,	/* I2C Data to write */
int		I2cDev,		/* I2C Device Address */
int		I2cDevSize, /* I2C Device Size (e.g. I2C_025K_DEV or I2C_2K_DEV) */
int		I2cReg,		/* I2C Device Register Address */
int		I2cBurst)	/* I2C Burst Flag */
{
	SK_OUT32(IoC, B2_I2C_DATA, I2cData);
	
	SK_I2C_CTL(IoC, I2C_WRITE, I2cDev, I2cDevSize, I2cReg, I2cBurst);
	
	return(SkI2cWait(pAC, IoC, I2C_WRITE));
}	/* SkI2cWrite*/


#ifdef	SK_DIAG
/*
 * reads a single byte or 4 bytes from the I2C device
 *
 * returns	the word read
 */
SK_U32 SkI2cRead(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* I/O Context */
int		I2cDev,		/* I2C Device Address */
int		I2cDevSize, /* I2C Device Size (e.g. I2C_025K_DEV or I2C_2K_DEV) */
int		I2cReg,		/* I2C Device Register Address */
int		I2cBurst)	/* I2C Burst Flag */
{
	SK_U32	Data;

	SK_OUT32(IoC, B2_I2C_DATA, 0);
	SK_I2C_CTL(IoC, I2C_READ, I2cDev, I2cDevSize, I2cReg, I2cBurst);
	
	if (SkI2cWait(pAC, IoC, I2C_READ) != 0) {
		w_print("%s\n", SKERR_I2C_E002MSG);
	}
	
	SK_IN32(IoC, B2_I2C_DATA, &Data);
	
	return(Data);
}	/* SkI2cRead */
#endif /* SK_DIAG */


/*
 * read a sensor's value
 *
 * This function reads a sensor's value from the I2C sensor chip. The sensor
 * is defined by its index into the sensors database in the struct pAC points
 * to.
 * Returns
 *		1 if the read is completed
 *		0 if the read must be continued (I2C Bus still allocated)
 */
static int	SkI2cReadSensor(
SK_AC		*pAC,	/* Adapter Context */
SK_IOC		IoC,	/* I/O Context */
SK_SENSOR	*pSen)	/* Sensor to be read */
{
    if (pSen->SenRead != NULL) {
        return((*pSen->SenRead)(pAC, IoC, pSen));
    }
	else {
        return(0); /* no success */
	}
}	/* SkI2cReadSensor */

/*
 * Do the Init state 0 initialization
 */
static int SkI2cInit0(
SK_AC	*pAC)	/* Adapter Context */
{
	int	i;

	/* Begin with first sensor */
	pAC->I2c.CurrSens = 0;
	
	/* Begin with timeout control for state machine */
	pAC->I2c.TimerMode = SK_TIMER_WATCH_SM;
	
	/* Set sensor number to zero */
	pAC->I2c.MaxSens = 0;

#ifndef SK_DIAG
	/* Initialize Number of Dummy Reads */
	pAC->I2c.DummyReads = SK_MAX_SENSORS;
#endif

	for (i = 0; i < SK_MAX_SENSORS; i++) {
		pAC->I2c.SenTable[i].SenDesc = "unknown";
		pAC->I2c.SenTable[i].SenType = SK_SEN_UNKNOWN;
		pAC->I2c.SenTable[i].SenThreErrHigh = 0;
		pAC->I2c.SenTable[i].SenThreErrLow = 0;
		pAC->I2c.SenTable[i].SenThreWarnHigh = 0;
		pAC->I2c.SenTable[i].SenThreWarnLow = 0;
		pAC->I2c.SenTable[i].SenReg = LM80_FAN2_IN;
		pAC->I2c.SenTable[i].SenInit = SK_SEN_DYN_INIT_NONE;
		pAC->I2c.SenTable[i].SenValue = 0;
		pAC->I2c.SenTable[i].SenErrFlag = SK_SEN_ERR_NOT_PRESENT;
		pAC->I2c.SenTable[i].SenErrCts = 0;
		pAC->I2c.SenTable[i].SenBegErrTS = 0;
		pAC->I2c.SenTable[i].SenState = SK_SEN_IDLE;
		pAC->I2c.SenTable[i].SenRead = NULL;
		pAC->I2c.SenTable[i].SenDev = 0;
	}

	/* Now we are "INIT data"ed */
	pAC->I2c.InitLevel = SK_INIT_DATA;
	return(0);
}	/* SkI2cInit0*/


/*
 * Do the init state 1 initialization
 *
 * initialize the following register of the LM80:
 * Configuration register:
 * - START, noINT, activeLOW, noINT#Clear, noRESET, noCI, noGPO#, noINIT
 *
 * Interrupt Mask Register 1:
 * - all interrupts are Disabled (0xff)
 *
 * Interrupt Mask Register 2:
 * - all interrupts are Disabled (0xff) Interrupt modi doesn't matter.
 *
 * Fan Divisor/RST_OUT register:
 * - Divisors set to 1 (bits 00), all others 0s.
 *
 * OS# Configuration/Temperature resolution Register:
 * - all 0s
 *
 */
static int SkI2cInit1(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC)	/* I/O Context */
{
    int i;
    SK_U8 I2cSwCtrl;
	SK_GEPORT *pPrt;	/* GIni Port struct pointer */

	if (pAC->I2c.InitLevel != SK_INIT_DATA) {
		/* ReInit not needed in I2C module */
		return(0);
	}

    /* Set the Direction of I2C-Data Pin to IN */
    SK_I2C_CLR_BIT(IoC, I2C_DATA_DIR | I2C_DATA);
    /* Check for 32-Bit Yukon with Low at I2C-Data Pin */
	SK_I2C_GET_SW(IoC, &I2cSwCtrl);

	if ((I2cSwCtrl & I2C_DATA) == 0) {
		/* this is a 32-Bit board */
		pAC->GIni.GIYukon32Bit = SK_TRUE;
        return(0);
    }

	/* Check for 64 Bit Yukon without sensors */
	if (SkI2cWrite(pAC, IoC, 0, LM80_ADDR, I2C_025K_DEV, LM80_CFG, 0) != 0) {
        return(0);
    }

	(void)SkI2cWrite(pAC, IoC, 0xffUL, LM80_ADDR, I2C_025K_DEV, LM80_IMSK_1, 0);
	
	(void)SkI2cWrite(pAC, IoC, 0xffUL, LM80_ADDR, I2C_025K_DEV, LM80_IMSK_2, 0);
	
	(void)SkI2cWrite(pAC, IoC, 0, LM80_ADDR, I2C_025K_DEV, LM80_FAN_CTRL, 0);
	
	(void)SkI2cWrite(pAC, IoC, 0, LM80_ADDR, I2C_025K_DEV, LM80_TEMP_CTRL, 0);
	
	(void)SkI2cWrite(pAC, IoC, (SK_U32)LM80_CFG_START, LM80_ADDR, I2C_025K_DEV,
		LM80_CFG, 0);
	
	/*
	 * MaxSens has to be updated here, because PhyType is not
	 * set when performing Init Level 0
	 */
    pAC->I2c.MaxSens = 5;
	
	pPrt = &pAC->GIni.GP[0];
	
	if (pAC->GIni.GIGenesis) {
		if (pPrt->PhyType == SK_PHY_BCOM) {
			if (pAC->GIni.GIMacsFound == 1) {
				pAC->I2c.MaxSens += 1;
			}
			else {
				pAC->I2c.MaxSens += 3;
			}
		}
	}
	else {
		pAC->I2c.MaxSens += 3;
	}
	
	for (i = 0; i < pAC->I2c.MaxSens; i++) {
		switch (i) {
		case 0:
			pAC->I2c.SenTable[i].SenDesc = "Temperature";
			pAC->I2c.SenTable[i].SenType = SK_SEN_TEMP;
			pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_TEMP_HIGH_ERR;
			pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_TEMP_HIGH_WARN;
			pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_TEMP_LOW_WARN;
			pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_TEMP_LOW_ERR;
			pAC->I2c.SenTable[i].SenReg = LM80_TEMP_IN;
			break;
		case 1:
			pAC->I2c.SenTable[i].SenDesc = "Voltage PCI";
			pAC->I2c.SenTable[i].SenType = SK_SEN_VOLT;
			pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_PCI_5V_HIGH_ERR;
			pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_PCI_5V_HIGH_WARN;
			pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_PCI_5V_LOW_WARN;
			pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_PCI_5V_LOW_ERR;
			pAC->I2c.SenTable[i].SenReg = LM80_VT0_IN;
			break;
		case 2:
			pAC->I2c.SenTable[i].SenDesc = "Voltage PCI-IO";
			pAC->I2c.SenTable[i].SenType = SK_SEN_VOLT;
			pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_PCI_IO_5V_HIGH_ERR;
			pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_PCI_IO_5V_HIGH_WARN;
			pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_PCI_IO_3V3_LOW_WARN;
			pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_PCI_IO_3V3_LOW_ERR;
			pAC->I2c.SenTable[i].SenReg = LM80_VT1_IN;
			pAC->I2c.SenTable[i].SenInit = SK_SEN_DYN_INIT_PCI_IO;
			break;
		case 3:
			pAC->I2c.SenTable[i].SenDesc = "Voltage ASIC";
			pAC->I2c.SenTable[i].SenType = SK_SEN_VOLT;
			pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_VDD_HIGH_ERR;
			pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_VDD_HIGH_WARN;
			pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_VDD_LOW_WARN;
			pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_VDD_LOW_ERR;
			pAC->I2c.SenTable[i].SenReg = LM80_VT2_IN;
			break;
		case 4:
			if (pAC->GIni.GIGenesis) {
				if (pPrt->PhyType == SK_PHY_BCOM) {
					pAC->I2c.SenTable[i].SenDesc = "Voltage PHY A PLL";
					pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_PLL_3V3_HIGH_ERR;
					pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_PLL_3V3_HIGH_WARN;
					pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_PLL_3V3_LOW_WARN;
					pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_PLL_3V3_LOW_ERR;
				}
				else {
					pAC->I2c.SenTable[i].SenDesc = "Voltage PMA";
					pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_PLL_3V3_HIGH_ERR;
					pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_PLL_3V3_HIGH_WARN;
					pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_PLL_3V3_LOW_WARN;
					pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_PLL_3V3_LOW_ERR;
				}
			}
			else {
				pAC->I2c.SenTable[i].SenDesc = "Voltage VAUX";
				pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_VAUX_3V3_HIGH_ERR;
				pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_VAUX_3V3_HIGH_WARN;
				if (pAC->GIni.GIVauxAvail) {
					pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_VAUX_3V3_LOW_WARN;
					pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_VAUX_3V3_LOW_ERR;
				}
				else {
					pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_VAUX_0V_WARN_ERR;
					pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_VAUX_0V_WARN_ERR;
				}
			}
			pAC->I2c.SenTable[i].SenType = SK_SEN_VOLT;
			pAC->I2c.SenTable[i].SenReg = LM80_VT3_IN;
			break;
		case 5:
			if (pAC->GIni.GIGenesis) {
				pAC->I2c.SenTable[i].SenDesc = "Voltage PHY 2V5";
				pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_PHY_2V5_HIGH_ERR;
				pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_PHY_2V5_HIGH_WARN;
				pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_PHY_2V5_LOW_WARN;
				pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_PHY_2V5_LOW_ERR;
			}
			else {
				pAC->I2c.SenTable[i].SenDesc = "Voltage Core 1V5";
				pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_CORE_1V5_HIGH_ERR;
				pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_CORE_1V5_HIGH_WARN;
				pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_CORE_1V5_LOW_WARN;
				pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_CORE_1V5_LOW_ERR;
			}
			pAC->I2c.SenTable[i].SenType = SK_SEN_VOLT;
			pAC->I2c.SenTable[i].SenReg = LM80_VT4_IN;
			break;
		case 6:
			if (pAC->GIni.GIGenesis) {
				pAC->I2c.SenTable[i].SenDesc = "Voltage PHY B PLL";
			}
			else {
				pAC->I2c.SenTable[i].SenDesc = "Voltage PHY 3V3";
			}
			pAC->I2c.SenTable[i].SenType = SK_SEN_VOLT;
			pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_PLL_3V3_HIGH_ERR;
			pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_PLL_3V3_HIGH_WARN;
			pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_PLL_3V3_LOW_WARN;
			pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_PLL_3V3_LOW_ERR;
			pAC->I2c.SenTable[i].SenReg = LM80_VT5_IN;
			break;
		case 7:
			if (pAC->GIni.GIGenesis) {
				pAC->I2c.SenTable[i].SenDesc = "Speed Fan";
				pAC->I2c.SenTable[i].SenType = SK_SEN_FAN;
				pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_FAN_HIGH_ERR;
				pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_FAN_HIGH_WARN;
				pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_FAN_LOW_WARN;
				pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_FAN_LOW_ERR;
				pAC->I2c.SenTable[i].SenReg = LM80_FAN2_IN;
			}
			else {
				pAC->I2c.SenTable[i].SenDesc = "Voltage PHY 2V5";
				pAC->I2c.SenTable[i].SenType = SK_SEN_VOLT;
				pAC->I2c.SenTable[i].SenThreErrHigh = SK_SEN_PHY_2V5_HIGH_ERR;
				pAC->I2c.SenTable[i].SenThreWarnHigh = SK_SEN_PHY_2V5_HIGH_WARN;
				pAC->I2c.SenTable[i].SenThreWarnLow = SK_SEN_PHY_2V5_LOW_WARN;
				pAC->I2c.SenTable[i].SenThreErrLow = SK_SEN_PHY_2V5_LOW_ERR;
				pAC->I2c.SenTable[i].SenReg = LM80_VT6_IN;
			}
			break;
		default:
			SK_ERR_LOG(pAC, SK_ERRCL_INIT | SK_ERRCL_SW,
				SKERR_I2C_E001, SKERR_I2C_E001MSG);
			break;
		}

		pAC->I2c.SenTable[i].SenValue = 0;
		pAC->I2c.SenTable[i].SenErrFlag = SK_SEN_ERR_OK;
		pAC->I2c.SenTable[i].SenErrCts = 0;
		pAC->I2c.SenTable[i].SenBegErrTS = 0;
		pAC->I2c.SenTable[i].SenState = SK_SEN_IDLE;
		pAC->I2c.SenTable[i].SenRead = SkLm80ReadSensor;
		pAC->I2c.SenTable[i].SenDev = LM80_ADDR;
	}

#ifndef SK_DIAG
	pAC->I2c.DummyReads = pAC->I2c.MaxSens;
#endif /* !SK_DIAG */
	
	/* Clear I2C IRQ */
	SK_OUT32(IoC, B2_I2C_IRQ, I2C_CLR_IRQ);
	
	/* Now we are I/O initialized */
	pAC->I2c.InitLevel = SK_INIT_IO;
	return(0);
}	/* SkI2cInit1 */


/*
 * Init level 2: Start first sensor read.
 */
static int SkI2cInit2(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC)	/* I/O Context */
{
	int		ReadComplete;
	SK_SENSOR	*pSen;

	if (pAC->I2c.InitLevel != SK_INIT_IO) {
		/* ReInit not needed in I2C module */
		/* Init0 and Init2 not permitted */
		return(0);
	}

	pSen = &pAC->I2c.SenTable[pAC->I2c.CurrSens];
	ReadComplete = SkI2cReadSensor(pAC, IoC, pSen);

	if (ReadComplete) {
		SK_ERR_LOG(pAC, SK_ERRCL_INIT, SKERR_I2C_E008, SKERR_I2C_E008MSG);
	}

	/* Now we are correctly initialized */
	pAC->I2c.InitLevel = SK_INIT_RUN;

	return(0);
}	/* SkI2cInit2*/


/*
 * Initialize I2C devices
 *
 * Get the first voltage value and discard it.
 * Go into temperature read mode. A default pointer is not set.
 *
 * The things to be done depend on the init level in the parameter list:
 * Level 0:
 *	Initialize only the data structures. Do NOT access hardware.
 * Level 1:
 *	Initialize hardware through SK_IN / SK_OUT commands. Do NOT use interrupts.
 * Level 2:
 *	Everything is possible. Interrupts may be used from now on.
 *
 * return:
 *	0 = success
 *	other = error.
 */
int	SkI2cInit(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC,	/* I/O Context needed in levels 1 and 2 */
int		Level)	/* Init Level */
{

	switch (Level) {
	case SK_INIT_DATA:
		return(SkI2cInit0(pAC));
	case SK_INIT_IO:
		return(SkI2cInit1(pAC, IoC));
	case SK_INIT_RUN:
		return(SkI2cInit2(pAC, IoC));
	default:
		break;
	}

	return(0);
}	/* SkI2cInit */


#ifndef SK_DIAG

/*
 * Interrupt service function for the I2C Interface
 *
 * Clears the Interrupt source
 *
 * Reads the register and check it for sending a trap.
 *
 * Starts the timer if necessary.
 */
void SkI2cIsr(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC)	/* I/O Context */
{
	SK_EVPARA	Para;

	/* Clear I2C IRQ */
	SK_OUT32(IoC, B2_I2C_IRQ, I2C_CLR_IRQ);

	Para.Para64 = 0;
	SkEventQueue(pAC, SKGE_I2C, SK_I2CEV_IRQ, Para);
}	/* SkI2cIsr */


/*
 * Check this sensors Value against the threshold and send events.
 */
static void SkI2cCheckSensor(
SK_AC		*pAC,	/* Adapter Context */
SK_SENSOR	*pSen)
{
	SK_EVPARA	ParaLocal;
	SK_BOOL		TooHigh;	/* Is sensor too high? */
	SK_BOOL		TooLow;		/* Is sensor too low? */
	SK_U64		CurrTime;	/* Current Time */
	SK_BOOL		DoTrapSend;	/* We need to send a trap */
	SK_BOOL		DoErrLog;	/* We need to log the error */
	SK_BOOL		IsError;	/* We need to log the error */

	/* Check Dummy Reads first */
	if (pAC->I2c.DummyReads > 0) {
		pAC->I2c.DummyReads--;
		return;
	}

	/* Get the current time */
	CurrTime = SkOsGetTime(pAC);

	/* Set para to the most useful setting: The current sensor. */
	ParaLocal.Para64 = (SK_U64)pAC->I2c.CurrSens;

	/* Check the Value against the thresholds. First: Error Thresholds */
	TooHigh = (pSen->SenValue > pSen->SenThreErrHigh);
	TooLow = (pSen->SenValue < pSen->SenThreErrLow);
		
	IsError = SK_FALSE;
	if (TooHigh || TooLow) {
		/* Error condition is satisfied */
		DoTrapSend = SK_TRUE;
		DoErrLog = SK_TRUE;

		/* Now error condition is satisfied */
		IsError = SK_TRUE;

		if (pSen->SenErrFlag == SK_SEN_ERR_ERR) {
			/* This state is the former one */

			/* So check first whether we have to send a trap */
			if (pSen->SenLastErrTrapTS + SK_SEN_ERR_TR_HOLD >
			    CurrTime) {
				/*
				 * Do NOT send the Trap. The hold back time
				 * has to run out first.
				 */
				DoTrapSend = SK_FALSE;
			}

			/* Check now whether we have to log an Error */
			if (pSen->SenLastErrLogTS + SK_SEN_ERR_LOG_HOLD >
			    CurrTime) {
				/*
				 * Do NOT log the error. The hold back time
				 * has to run out first.
				 */
				DoErrLog = SK_FALSE;
			}
		}
		else {
			/* We came from a different state -> Set Begin Time Stamp */
			pSen->SenBegErrTS = CurrTime;
			pSen->SenErrFlag = SK_SEN_ERR_ERR;
		}

		if (DoTrapSend) {
			/* Set current Time */
			pSen->SenLastErrTrapTS = CurrTime;
			pSen->SenErrCts++;

			/* Queue PNMI Event */
			SkEventQueue(pAC, SKGE_PNMI, (TooHigh ?
				SK_PNMI_EVT_SEN_ERR_UPP :
				SK_PNMI_EVT_SEN_ERR_LOW),
				ParaLocal);
		}

		if (DoErrLog) {
			/* Set current Time */
			pSen->SenLastErrLogTS = CurrTime;

			if (pSen->SenType == SK_SEN_TEMP) {
				SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_I2C_E011, SKERR_I2C_E011MSG);
			}
			else if (pSen->SenType == SK_SEN_VOLT) {
				SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_I2C_E012, SKERR_I2C_E012MSG);
			}
			else {
				SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_I2C_E015, SKERR_I2C_E015MSG);
			}
		}
	}

	/* Check the Value against the thresholds */
	/* 2nd: Warning thresholds */
	TooHigh = (pSen->SenValue > pSen->SenThreWarnHigh);
	TooLow = (pSen->SenValue < pSen->SenThreWarnLow);
		
	if (!IsError && (TooHigh || TooLow)) {
		/* Error condition is satisfied */
		DoTrapSend = SK_TRUE;
		DoErrLog = SK_TRUE;

		if (pSen->SenErrFlag == SK_SEN_ERR_WARN) {
			/* This state is the former one */

			/* So check first whether we have to send a trap */
			if (pSen->SenLastWarnTrapTS + SK_SEN_WARN_TR_HOLD > CurrTime) {
				/*
				 * Do NOT send the Trap. The hold back time
				 * has to run out first.
				 */
				DoTrapSend = SK_FALSE;
			}

			/* Check now whether we have to log an Error */
			if (pSen->SenLastWarnLogTS + SK_SEN_WARN_LOG_HOLD > CurrTime) {
				/*
				 * Do NOT log the error. The hold back time
				 * has to run out first.
				 */
				DoErrLog = SK_FALSE;
			}
		}
		else {
			/* We came from a different state -> Set Begin Time Stamp */
			pSen->SenBegWarnTS = CurrTime;
			pSen->SenErrFlag = SK_SEN_ERR_WARN;
		}

		if (DoTrapSend) {
			/* Set current Time */
			pSen->SenLastWarnTrapTS = CurrTime;
			pSen->SenWarnCts++;

			/* Queue PNMI Event */
			SkEventQueue(pAC, SKGE_PNMI, (TooHigh ?
				SK_PNMI_EVT_SEN_WAR_UPP :
				SK_PNMI_EVT_SEN_WAR_LOW),
				ParaLocal);
		}

		if (DoErrLog) {
			/* Set current Time */
			pSen->SenLastWarnLogTS = CurrTime;

			if (pSen->SenType == SK_SEN_TEMP) {
				SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_I2C_E009, SKERR_I2C_E009MSG);
			}
			else if (pSen->SenType == SK_SEN_VOLT) {
				SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_I2C_E010, SKERR_I2C_E010MSG);
			}
			else {
				SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_I2C_E014, SKERR_I2C_E014MSG);
			}
		}
	}

	/* Check for NO error at all */
	if (!IsError && !TooHigh && !TooLow) {
		/* Set o.k. Status if no error and no warning condition */
		pSen->SenErrFlag = SK_SEN_ERR_OK;
	}

	/* End of check against the thresholds */

	/* Bug fix AF: 16.Aug.2001: Correct the init base
	 * of LM80 sensor.
	 */
	if (pSen->SenInit == SK_SEN_DYN_INIT_PCI_IO) {

        pSen->SenInit = SK_SEN_DYN_INIT_NONE;

		if (pSen->SenValue > SK_SEN_PCI_IO_RANGE_LIMITER) {
			/* 5V PCI-IO Voltage */
			pSen->SenThreWarnLow = SK_SEN_PCI_IO_5V_LOW_WARN;
			pSen->SenThreErrLow = SK_SEN_PCI_IO_5V_LOW_ERR;
		}
		else {
			/* 3.3V PCI-IO Voltage */
			pSen->SenThreWarnHigh = SK_SEN_PCI_IO_3V3_HIGH_WARN;
			pSen->SenThreErrHigh = SK_SEN_PCI_IO_3V3_HIGH_ERR;
		}
	}
	
#ifdef TEST_ONLY
    /* Dynamic thresholds also for VAUX of LM80 sensor */
	if (pSen->SenInit == SK_SEN_DYN_INIT_VAUX) {

        pSen->SenInit = SK_SEN_DYN_INIT_NONE;

		/* 3.3V VAUX Voltage */
		if (pSen->SenValue > SK_SEN_VAUX_RANGE_LIMITER) {
			pSen->SenThreWarnLow = SK_SEN_VAUX_3V3_LOW_WARN;
			pSen->SenThreErrLow = SK_SEN_VAUX_3V3_LOW_ERR;
		}
		/* 0V VAUX Voltage */
		else {
			pSen->SenThreWarnHigh = SK_SEN_VAUX_0V_WARN_ERR;
			pSen->SenThreErrHigh = SK_SEN_VAUX_0V_WARN_ERR;
		}
	}

	/*
	 * Check initialization state:
	 * The VIO Thresholds need adaption
	 */
	if (!pSen->SenInit && pSen->SenReg == LM80_VT1_IN &&
	     pSen->SenValue > SK_SEN_WARNLOW2C &&
	     pSen->SenValue < SK_SEN_WARNHIGH2) {
		pSen->SenThreErrLow = SK_SEN_ERRLOW2C;
		pSen->SenThreWarnLow = SK_SEN_WARNLOW2C;
		pSen->SenInit = SK_TRUE;
	}

	if (!pSen->SenInit && pSen->SenReg == LM80_VT1_IN &&
	     pSen->SenValue > SK_SEN_WARNLOW2 &&
	     pSen->SenValue < SK_SEN_WARNHIGH2C) {
		pSen->SenThreErrHigh = SK_SEN_ERRHIGH2C;
		pSen->SenThreWarnHigh = SK_SEN_WARNHIGH2C;
		pSen->SenInit = SK_TRUE;
	}
#endif

	if (pSen->SenInit != SK_SEN_DYN_INIT_NONE) {
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_I2C_E013, SKERR_I2C_E013MSG);
	}
}	/* SkI2cCheckSensor */


/*
 * The only Event to be served is the timeout event
 *
 */
int	SkI2cEvent(
SK_AC		*pAC,	/* Adapter Context */
SK_IOC		IoC,	/* I/O Context */
SK_U32		Event,	/* Module specific Event */
SK_EVPARA	Para)	/* Event specific Parameter */
{
	int			ReadComplete;
	SK_SENSOR	*pSen;
	SK_U32		Time;
	SK_EVPARA	ParaLocal;
	int			i;

	/* New case: no sensors */
	if (pAC->I2c.MaxSens == 0) {
		return(0);
	}

	switch (Event) {
	case SK_I2CEV_IRQ:
		pSen = &pAC->I2c.SenTable[pAC->I2c.CurrSens];
		ReadComplete = SkI2cReadSensor(pAC, IoC, pSen);

		if (ReadComplete) {
			/* Check sensor against defined thresholds */
			SkI2cCheckSensor(pAC, pSen);

			/* Increment Current sensor and set appropriate Timeout */
			pAC->I2c.CurrSens++;
			if (pAC->I2c.CurrSens >= pAC->I2c.MaxSens) {
				pAC->I2c.CurrSens = 0;
				Time = SK_I2C_TIM_LONG;
			}
			else {
				Time = SK_I2C_TIM_SHORT;
			}

			/* Start Timer */
			ParaLocal.Para64 = (SK_U64)0;

			pAC->I2c.TimerMode = SK_TIMER_NEW_GAUGING;
			
			SkTimerStart(pAC, IoC, &pAC->I2c.SenTimer, Time,
				SKGE_I2C, SK_I2CEV_TIM, ParaLocal);
		}
        else {
			/* Start Timer */
			ParaLocal.Para64 = (SK_U64)0;

			pAC->I2c.TimerMode = SK_TIMER_WATCH_SM;

            SkTimerStart(pAC, IoC, &pAC->I2c.SenTimer, SK_I2C_TIM_WATCH,
				SKGE_I2C, SK_I2CEV_TIM, ParaLocal);
		}
		break;
	case SK_I2CEV_TIM:
		if (pAC->I2c.TimerMode == SK_TIMER_NEW_GAUGING) {

			ParaLocal.Para64 = (SK_U64)0;
			SkTimerStop(pAC, IoC, &pAC->I2c.SenTimer);

			pSen = &pAC->I2c.SenTable[pAC->I2c.CurrSens];
			ReadComplete = SkI2cReadSensor(pAC, IoC, pSen);

			if (ReadComplete) {
				/* Check sensor against defined thresholds */
				SkI2cCheckSensor(pAC, pSen);

				/* Increment Current sensor and set appropriate Timeout */
				pAC->I2c.CurrSens++;
				if (pAC->I2c.CurrSens == pAC->I2c.MaxSens) {
					pAC->I2c.CurrSens = 0;
					Time = SK_I2C_TIM_LONG;
				}
				else {
					Time = SK_I2C_TIM_SHORT;
				}

				/* Start Timer */
				ParaLocal.Para64 = (SK_U64)0;

				pAC->I2c.TimerMode = SK_TIMER_NEW_GAUGING;

				SkTimerStart(pAC, IoC, &pAC->I2c.SenTimer, Time,
					SKGE_I2C, SK_I2CEV_TIM, ParaLocal);
			}
		}
		else {
			pSen = &pAC->I2c.SenTable[pAC->I2c.CurrSens];
			pSen->SenErrFlag = SK_SEN_ERR_FAULTY;
			SK_I2C_STOP(IoC);

			/* Increment Current sensor and set appropriate Timeout */
			pAC->I2c.CurrSens++;
			if (pAC->I2c.CurrSens == pAC->I2c.MaxSens) {
				pAC->I2c.CurrSens = 0;
				Time = SK_I2C_TIM_LONG;
			}
			else {
				Time = SK_I2C_TIM_SHORT;
			}

			/* Start Timer */
			ParaLocal.Para64 = (SK_U64)0;

			pAC->I2c.TimerMode = SK_TIMER_NEW_GAUGING;

			SkTimerStart(pAC, IoC, &pAC->I2c.SenTimer, Time,
				SKGE_I2C, SK_I2CEV_TIM, ParaLocal);
		}
		break;
	case SK_I2CEV_CLEAR:
		for (i = 0; i < SK_MAX_SENSORS; i++) {
			pAC->I2c.SenTable[i].SenErrFlag = SK_SEN_ERR_OK;
			pAC->I2c.SenTable[i].SenErrCts = 0;
			pAC->I2c.SenTable[i].SenWarnCts = 0;
			pAC->I2c.SenTable[i].SenBegErrTS = 0;
			pAC->I2c.SenTable[i].SenBegWarnTS = 0;
			pAC->I2c.SenTable[i].SenLastErrTrapTS = (SK_U64)0;
			pAC->I2c.SenTable[i].SenLastErrLogTS = (SK_U64)0;
			pAC->I2c.SenTable[i].SenLastWarnTrapTS = (SK_U64)0;
			pAC->I2c.SenTable[i].SenLastWarnLogTS = (SK_U64)0;
		}
		break;
	default:
		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_I2C_E006, SKERR_I2C_E006MSG);
	}

	return(0);
}	/* SkI2cEvent*/

#endif /* !SK_DIAG */
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