include/asm-mn10300/intctl-regs.h

   1 /* MN10300 On-board interrupt controller registers
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11 #ifndef _ASM_INTCTL_REGS_H
  12 #define _ASM_INTCTL_REGS_H
  13
  14 #include <asm/cpu-regs.h>
  15
  16 #ifdef __KERNEL__
  17
  18 /* interrupt controller registers */
  19 #define GxICR(X)                __SYSREG(0xd4000000 + (X) * 4, u16)     /* group irq ctrl regs */
  20
  21 #define IAGR                    __SYSREG(0xd4000100, u16)       /* intr acceptance group reg */
  22 #define IAGR_GN                 0x00fc          /* group number register
  23                                                  * (documentation _has_ to be wrong)
  24                                                  */
  25
  26 #define EXTMD                   __SYSREG(0xd4000200, u16)       /* external pin intr spec reg */
  27 #define GET_XIRQ_TRIGGER(X) ((EXTMD >> ((X) * 2)) & 3)
  28
  29 #define SET_XIRQ_TRIGGER(X,Y)                   \
  30 do {                                            \
  31         u16 x = EXTMD;                          \
  32         x &= ~(3 << ((X) * 2));                 \
  33         x |= ((Y) & 3) << ((X) * 2);            \
  34         EXTMD = x;                              \
  35 } while (0)
  36
  37 #define XIRQ_TRIGGER_LOWLEVEL   0
  38 #define XIRQ_TRIGGER_HILEVEL    1
  39 #define XIRQ_TRIGGER_NEGEDGE    2
  40 #define XIRQ_TRIGGER_POSEDGE    3
  41
  42 /* non-maskable interrupt control */
  43 #define NMIIRQ                  0
  44 #define NMICR                   GxICR(NMIIRQ)   /* NMI control register */
  45 #define NMICR_NMIF              0x0001          /* NMI pin interrupt flag */
  46 #define NMICR_WDIF              0x0002          /* watchdog timer overflow flag */
  47 #define NMICR_ABUSERR           0x0008          /* async bus error flag */
  48
  49 /* maskable interrupt control */
  50 #define GxICR_DETECT            0x0001          /* interrupt detect flag */
  51 #define GxICR_REQUEST           0x0010          /* interrupt request flag */
  52 #define GxICR_ENABLE            0x0100          /* interrupt enable flag */
  53 #define GxICR_LEVEL             0x7000          /* interrupt priority level */
  54 #define GxICR_LEVEL_0           0x0000          /* - level 0 */
  55 #define GxICR_LEVEL_1           0x1000          /* - level 1 */
  56 #define GxICR_LEVEL_2           0x2000          /* - level 2 */
  57 #define GxICR_LEVEL_3           0x3000          /* - level 3 */
  58 #define GxICR_LEVEL_4           0x4000          /* - level 4 */
  59 #define GxICR_LEVEL_5           0x5000          /* - level 5 */
  60 #define GxICR_LEVEL_6           0x6000          /* - level 6 */
  61 #define GxICR_LEVEL_SHIFT       12
  62
  63 #ifndef __ASSEMBLY__
  64 extern void set_intr_level(int irq, u16 level);
  65 extern void set_intr_postackable(int irq);
  66 #endif
  67
  68 /* external interrupts */
  69 #define XIRQxICR(X)             GxICR((X))      /* external interrupt control regs */
  70
  71 #endif /* __KERNEL__ */
  72
  73 #endif /* _ASM_INTCTL_REGS_H */