arch/blackfin/include/asm/pda.h

   1 /*
   2  * Copyright 2007-2009 Analog Devices Inc.
   3  *                         Philippe Gerum <rpm@xenomai.org>
   4  *
   5  * Licensed under the GPL-2 or later.
   6  */
   7
   8 #ifndef _ASM_BLACKFIN_PDA_H
   9 #define _ASM_BLACKFIN_PDA_H
  10
  11 #include <mach/anomaly.h>
  12
  13 #ifndef __ASSEMBLY__
  14
  15 struct blackfin_pda {                   /* Per-processor Data Area */
  16 #ifdef CONFIG_SMP
  17         struct blackfin_pda *next;
  18 #endif
  19
  20         unsigned long syscfg;
  21 #ifdef CONFIG_SMP
  22         unsigned long imask;            /* Current IMASK value */
  23 #endif
  24
  25         unsigned long *ipdt;            /* Start of switchable I-CPLB table */
  26         unsigned long *ipdt_swapcount;  /* Number of swaps in ipdt */
  27         unsigned long *dpdt;            /* Start of switchable D-CPLB table */
  28         unsigned long *dpdt_swapcount;  /* Number of swaps in dpdt */
  29
  30         /*
  31          * Single instructions can have multiple faults, which
  32          * need to be handled by traps.c, in irq5. We store
  33          * the exception cause to ensure we don't miss a
  34          * double fault condition
  35          */
  36         unsigned long ex_iptr;
  37         unsigned long ex_optr;
  38         unsigned long ex_buf[4];
  39         unsigned long ex_imask;         /* Saved imask from exception */
  40         unsigned long ex_ipend;         /* Saved IPEND from exception */
  41         unsigned long *ex_stack;        /* Exception stack space */
  42
  43 #ifdef ANOMALY_05000261
  44         unsigned long last_cplb_fault_retx;
  45 #endif
  46         unsigned long dcplb_fault_addr;
  47         unsigned long icplb_fault_addr;
  48         unsigned long retx;
  49         unsigned long seqstat;
  50         unsigned int __nmi_count;       /* number of times NMI asserted on this CPU */
  51 #ifdef CONFIG_DEBUG_DOUBLEFAULT
  52         unsigned long dcplb_doublefault_addr;
  53         unsigned long icplb_doublefault_addr;
  54         unsigned long retx_doublefault;
  55         unsigned long seqstat_doublefault;
  56 #endif
  57 };
  58
  59 struct blackfin_initial_pda {
  60         void *retx;
  61 #ifdef CONFIG_DEBUG_DOUBLEFAULT
  62         void *dcplb_doublefault_addr;
  63         void *icplb_doublefault_addr;
  64         void *retx_doublefault;
  65         unsigned seqstat_doublefault;
  66 #endif
  67 };
  68
  69 extern struct blackfin_pda cpu_pda[];
  70
  71 #endif  /* __ASSEMBLY__ */
  72
  73 #endif /* _ASM_BLACKFIN_PDA_H */