include/asm-mips/dec/interrupts.h

   1 /*
   2  * Miscellaneous definitions used to initialise the interrupt vector table
   3  * with the machine-specific interrupt routines.
   4  *
   5  * This file is subject to the terms and conditions of the GNU General Public
   6  * License.  See the file "COPYING" in the main directory of this archive
   7  * for more details.
   8  *
   9  * Copyright (C) 1997 by Paul M. Antoine.
  10  * reworked 1998 by Harald Koerfgen.
  11  */
  12
  13 #ifndef __ASM_DEC_INTERRUPTS_H
  14 #define __ASM_DEC_INTERRUPTS_H
  15
  16 /*
  17  * DECstation Interrupts
  18  */
  19
  20 /*
  21  * This list reflects the priority of the Interrupts.
  22  * Exception: on kmins we have to handle Memory Error
  23  * Interrupts before the TC Interrupts.
  24  */
  25 #define CLOCK   0
  26 #define SCSI_DMA_INT    1
  27 #define SCSI_INT        2
  28 #define ETHER           3
  29 #define SERIAL          4
  30 #define TC0             5
  31 #define TC1             6
  32 #define TC2             7
  33 #define MEMORY          8
  34 #define FPU             9
  35 #define HALT            10
  36
  37 #define NR_INTS 11
  38
  39 #ifndef _LANGUAGE_ASSEMBLY
  40 /*
  41  * Data structure to hide the differences between the DECstation Interrupts
  42  *
  43  * If asic_mask == NULL, the interrupt is directly handled by the CPU.
  44  * Otherwise this Interrupt is handled the IRQ Controller.
  45  */
  46
  47 typedef struct
  48 {
  49         unsigned int    cpu_mask;       /* checking and enabling interrupts in CP0      */
  50         unsigned int    iemask;         /* enabling interrupts in IRQ Controller        */
  51 } decint_t;
  52
  53 /*
  54  * Interrupt table structure to hide differences between different
  55  * systems such.
  56  */
  57 extern void *cpu_ivec_tbl[8];
  58 extern long cpu_mask_tbl[8];
  59 extern long cpu_irq_nr[8];
  60 extern long asic_irq_nr[32];
  61 extern long asic_mask_tbl[32];
  62
  63 /*
  64  * Common interrupt routine prototypes for all DECStations
  65  */
  66 extern void     dec_intr_unimplemented(void);
  67 extern void     dec_intr_fpu(void);
  68 extern void     dec_intr_rtc(void);
  69
  70 extern void     kn02_io_int(void);
  71 extern void     kn02ba_io_int(void);
  72 extern void     kn03_io_int(void);
  73
  74 extern void     intr_halt(void);
  75
  76 extern void     asic_intr_unimplemented(void);
  77
  78 #endif
  79 #endif
  80