pda.h

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/*
 * Copyright 2007-2009 Analog Devices Inc.
 *                         Philippe Gerum <[email protected]>
 *
 * 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 */