pda.h

/*
 * Copyright 2007-2009 Analog Devices Inc.
 *                         Philippe Gerum <rpm@xenomai.org>
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef _ASM_BLACKFIN_PDA_H
#define _ASM_BLACKFIN_PDA_H

#include <mach/anomaly.h>

#ifndef __ASSEMBLY__

struct blackfin_pda {			/* Per-processor Data Area */
#ifdef CONFIG_SMP
	struct blackfin_pda *next;
#endif

	unsigned long syscfg;
#ifdef CONFIG_SMP
	unsigned long imask;		/* Current IMASK value */
#endif

	unsigned long *ipdt;		/* Start of switchable I-CPLB table */
	unsigned long *ipdt_swapcount;	/* Number of swaps in ipdt */
	unsigned long *dpdt;		/* Start of switchable D-CPLB table */
	unsigned long *dpdt_swapcount;	/* Number of swaps in dpdt */

	/*
	 * Single instructions can have multiple faults, which
	 * need to be handled by traps.c, in irq5. We store
	 * the exception cause to ensure we don't miss a
	 * double fault condition
	 */
	unsigned long ex_iptr;
	unsigned long ex_optr;
	unsigned long ex_buf[4];
	unsigned long ex_imask;		/* Saved imask from exception */
	unsigned long ex_ipend;		/* Saved IPEND from exception */
	unsigned long *ex_stack;	/* Exception stack space */

#ifdef ANOMALY_05000261
	unsigned long last_cplb_fault_retx;
#endif
	unsigned long dcplb_fault_addr;
	unsigned long icplb_fault_addr;
	unsigned long retx;
	unsigned long seqstat;
	unsigned int __nmi_count;	/* number of times NMI asserted on this CPU */
#ifdef CONFIG_DEBUG_DOUBLEFAULT
	unsigned long dcplb_doublefault_addr;
	unsigned long icplb_doublefault_addr;
	unsigned long retx_doublefault;
	unsigned long seqstat_doublefault;
#endif
};

struct blackfin_initial_pda {
	void *retx;
#ifdef CONFIG_DEBUG_DOUBLEFAULT
	void *dcplb_doublefault_addr;
	void *icplb_doublefault_addr;
	void *retx_doublefault;
	unsigned seqstat_doublefault;
#endif
};

extern struct blackfin_pda cpu_pda[];

#endif	/* __ASSEMBLY__ */

#endif /* _ASM_BLACKFIN_PDA_H */