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         struct blackfin_pda *next;
  17
  18         unsigned long syscfg;
  19 #ifdef CONFIG_SMP
  20         unsigned long imask;            /* Current IMASK value */
  21 #endif
  22
  23         unsigned long *ipdt;            /* Start of switchable I-CPLB table */
  24         unsigned long *ipdt_swapcount;  /* Number of swaps in ipdt */
  25         unsigned long *dpdt;            /* Start of switchable D-CPLB table */
  26         unsigned long *dpdt_swapcount;  /* Number of swaps in dpdt */
  27
  28         /*
  29          * Single instructions can have multiple faults, which
  30          * need to be handled by traps.c, in irq5. We store
  31          * the exception cause to ensure we don't miss a
  32          * double fault condition
  33          */
  34         unsigned long ex_iptr;
  35         unsigned long ex_optr;
  36         unsigned long ex_buf[4];
  37         unsigned long ex_imask;         /* Saved imask from exception */
  38         unsigned long ex_ipend;         /* Saved IPEND from exception */
  39         unsigned long *ex_stack;        /* Exception stack space */
  40
  41 #ifdef ANOMALY_05000261
  42         unsigned long last_cplb_fault_retx;
  43 #endif
  44         unsigned long dcplb_fault_addr;
  45         unsigned long icplb_fault_addr;
  46         unsigned long retx;
  47         unsigned long seqstat;
  48         unsigned int __nmi_count;       /* number of times NMI asserted on this CPU */
  49 #ifdef CONFIG_DEBUG_DOUBLEFAULT
  50         unsigned long dcplb_doublefault_addr;
  51         unsigned long icplb_doublefault_addr;
  52         unsigned long retx_doublefault;
  53         unsigned long seqstat_doublefault;
  54 #endif
  55 };
  56
  57 struct blackfin_initial_pda {
  58         void *retx;
  59 #ifdef CONFIG_DEBUG_DOUBLEFAULT
  60         void *dcplb_doublefault_addr;
  61         void *icplb_doublefault_addr;
  62         void *retx_doublefault;
  63         unsigned seqstat_doublefault;
  64 #endif
  65 };
  66
  67 extern struct blackfin_pda cpu_pda[];
  68
  69 #endif  /* __ASSEMBLY__ */
  70
  71 #endif /* _ASM_BLACKFIN_PDA_H */