itlppaca.h

是关于linux2.5.1的完全源码

/*
 * ItLpPaca.h
 * Copyright (C) 2001  Mike Corrigan IBM Corporation
 * 
 * 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.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

//=============================================================================
//                                   
//	This control block contains the data that is shared between the 
//	hypervisor (PLIC) and the OS.
//    
//
//----------------------------------------------------------------------------
#ifndef  _PPC_TYPES_H
#include <asm/types.h>
#endif

#ifndef _ITLPPACA_H
#define _ITLPPACA_H


struct ItLpPaca
{
//=============================================================================
// CACHE_LINE_1 0x0000 - 0x007F Contains read-only data
// NOTE: The xDynXyz fields are fields that will be dynamically changed by 
// PLIC when preparing to bring a processor online or when dispatching a 
// virtual processor!
//=============================================================================
    u32		xDesc;			// Eye catcher 0xD397D781	x00-x03
    u16		xSize;			// Size of this struct		x04-x05
    u16		xRsvd1_0;		// Reserved			x06-x07
    u16		xRsvd1_1:14;		// Reserved			x08-x09
    u8		xSharedProc:1;		// Shared processor indicator	...
    u8		xSecondaryThread:1;	// Secondary thread indicator	...
    volatile u8 xDynProcStatus:8;	// Dynamic Status of this proc	x0A-x0A
    u8		xSecondaryThreadCnt;	// Secondary thread count	x0B-x0B
    volatile u16 xDynHvPhysicalProcIndex;// Dynamic HV Physical Proc Index0C-x0D
    volatile u16 xDynHvLogicalProcIndex;// Dynamic HV Logical Proc Indexx0E-x0F
    u32         xDecrVal;   		// Value for Decr programming 	x10-x13
    u32         xPMCVal;       		// Value for PMC regs         	x14-x17
    volatile u32 xDynHwNodeId;		// Dynamic Hardware Node id	x18-x1B
    volatile u32 xDynHwProcId;		// Dynamic Hardware Proc Id	x1C-x1F
    volatile u32 xDynPIR;		// Dynamic ProcIdReg value	x20-x23
    u32         xDseiData;           	// DSEI data                  	x24-x27
    u64         xSPRG3;               	// SPRG3 value                	x28-x2F
    u8		xRsvd1_3[80];		// Reserved			x30-x7F
   
//=============================================================================
// CACHE_LINE_2 0x0080 - 0x00FF Contains local read-write data
//=============================================================================
    // This Dword contains a byte for each type of interrupt that can occur.  
    // The IPI is a count while the others are just a binary 1 or 0.

    u16 xRsvd;				// Reserved - cleared by #mpasmbl
    u8	xXirrInt;			// Indicates xXirrValue is valid or Immed IO
    u8  xIpiCnt;			// IPI Count
    u8  xDecrInt;			// DECR interrupt occurred
    u8  xPdcInt;			// PDC interrupt occurred
    u8  xQuantumInt;			// Interrupt quantum reached
    u8  xOldPlicDeferredExtInt;		// Old PLIC has deferred XIRR pending

    u64	xPlicDeferIntsArea;

    // Used to pass the real SRR0/1 from PLIC to the OS as well as to 
    // pass the target SRR0/1 from the OS to PLIC on a SetAsrAndRfid.
    u64     xSavedSrr0;             	// Saved SRR0                   x10-x17
    u64     xSavedSrr1;             	// Saved SRR1                   x18-x1F

    // Used to pass parms from the OS to PLIC for SetAsrAndRfid
    u64     xSavedGpr3;             	// Saved GPR3                   x20-x27
    u64     xSavedGpr4;             	// Saved GPR4                   x28-x2F
    u64     xSavedGpr5;             	// Saved GPR5                   x30-x37

    u8	    xRsvd2_1;			// Reserved			x38-x38
    u8      xCpuCtlsTaskAttributes; 	// Task attributes for cpuctls  x39-x39
    u8      xFPRegsInUse;           	// FP regs in use               x3A-x3A
    u8      xPMCRegsInUse;          	// PMC regs in use              x3B-x3B
    volatile u32  xSavedDecr;           // Saved Decr Value             x3C-x3F
    volatile u64  xEmulatedTimeBase;    // Emulated TB for this thread  x40-x47
    volatile u64  xCurPLICLatency;      // Unaccounted PLIC latency     x48-x4F
    u64     xTotPLICLatency;        	// Accumulated PLIC latency     x50-x57   
    u64     xWaitStateCycles;       	// Wait cycles for this proc    x58-x5F
    u64     xEndOfQuantum;          	// TB at end of quantum         x60-x67
    u64     xPDCSavedSPRG1;         	// Saved SPRG1 for PMC int      x68-x6F
    u64     xPDCSavedSRR0;          	// Saved SRR0 for PMC int       x70-x77
    volatile u32 xVirtualDecr;		// Virtual DECR for shared procsx78-x7B
    u32	    xRsvd2_2;			// Reserved			x7C-x7F

//=============================================================================
// CACHE_LINE_3 0x0100 - 0x007F: This line is shared with other processors
//=============================================================================
    // This is the xYieldCount.  An "odd" value (low bit on) means that 
    // the processor is yielded (either because of an OS yield or a PLIC 
    // preempt).  An even value implies that the processor is currently 
    // executing.
    // NOTE: This value will ALWAYS be zero for dedicated processors and 
    // will NEVER be zero for shared processors (ie, initialized to a 1).
    volatile u32 xYieldCount;		// PLIC increments each dispatchx00-x03
    u8	    xRsvd3_0[124];          	// Reserved                     x04-x7F         

//=============================================================================
// CACHE_LINE_4-5 0x0100 - 0x01FF Contains PMC interrupt data
//=============================================================================
    u8      xPmcSaveArea[256];      	// PMC interrupt Area           x00-xFF


};
#endif // _ITLPPACA_H