include/asm-sh64/irq.h

   1 #ifndef __ASM_SH64_IRQ_H
   2 #define __ASM_SH64_IRQ_H
   3
   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  * include/asm-sh64/irq.h
  10  *
  11  * Copyright (C) 2000, 2001  Paolo Alberelli
  12  *
  13  */
  14
  15
  16 /*
  17  * Encoded IRQs are not considered worth to be supported.
  18  * Main reason is that there's no per-encoded-interrupt
  19  * enable/disable mechanism (as there was in SH3/4).
  20  * An all enabled/all disabled is worth only if there's
  21  * a cascaded IC to disable/enable/ack on. Until such
  22  * IC is available there's no such support.
  23  *
  24  * Presumably Encoded IRQs may use extra IRQs beyond 64,
  25  * below. Some logic must be added to cope with IRQ_IRL?
  26  * in an exclusive way.
  27  *
  28  * Priorities are set at Platform level, when IRQ_IRL0-3
  29  * are set to 0 Encoding is allowed. Otherwise it's not
  30  * allowed.
  31  */
  32
  33 /* Independent IRQs */
  34 #define IRQ_IRL0        0
  35 #define IRQ_IRL1        1
  36 #define IRQ_IRL2        2
  37 #define IRQ_IRL3        3
  38
  39 #define IRQ_INTA        4
  40 #define IRQ_INTB        5
  41 #define IRQ_INTC        6
  42 #define IRQ_INTD        7
  43
  44 #define IRQ_SERR        12
  45 #define IRQ_ERR         13
  46 #define IRQ_PWR3        14
  47 #define IRQ_PWR2        15
  48 #define IRQ_PWR1        16
  49 #define IRQ_PWR0        17
  50
  51 #define IRQ_DMTE0       18
  52 #define IRQ_DMTE1       19
  53 #define IRQ_DMTE2       20
  54 #define IRQ_DMTE3       21
  55 #define IRQ_DAERR       22
  56
  57 #define IRQ_TUNI0       32
  58 #define IRQ_TUNI1       33
  59 #define IRQ_TUNI2       34
  60 #define IRQ_TICPI2      35
  61
  62 #define IRQ_ATI         36
  63 #define IRQ_PRI         37
  64 #define IRQ_CUI         38
  65
  66 #define IRQ_ERI         39
  67 #define IRQ_RXI         40
  68 #define IRQ_BRI         41
  69 #define IRQ_TXI         42
  70
  71 #define IRQ_ITI         63
  72
  73 #define NR_INTC_IRQS    64
  74
  75 #ifdef CONFIG_SH_CAYMAN
  76 #define NR_EXT_IRQS     32
  77 #define START_EXT_IRQS  64
  78
  79 /* PCI bus 2 uses encoded external interrupts on the Cayman board */
  80 #define IRQ_P2INTA      (START_EXT_IRQS + (3*8) + 0)
  81 #define IRQ_P2INTB      (START_EXT_IRQS + (3*8) + 1)
  82 #define IRQ_P2INTC      (START_EXT_IRQS + (3*8) + 2)
  83 #define IRQ_P2INTD      (START_EXT_IRQS + (3*8) + 3)
  84
  85 #define I8042_KBD_IRQ   (START_EXT_IRQS + 2)
  86 #define I8042_AUX_IRQ   (START_EXT_IRQS + 6)
  87
  88 #define IRQ_CFCARD      (START_EXT_IRQS + 7)
  89 #define IRQ_PCMCIA      (0)
  90
  91 #else
  92 #define NR_EXT_IRQS     0
  93 #endif
  94
  95 #define NR_IRQS         (NR_INTC_IRQS+NR_EXT_IRQS)
  96
  97
  98 /* Default IRQs, fixed */
  99 #define TIMER_IRQ       IRQ_TUNI0
 100 #define RTC_IRQ         IRQ_CUI
 101
 102 /* Default Priorities, Platform may choose differently */
 103 #define NO_PRIORITY     0       /* Disabled */
 104 #define TIMER_PRIORITY  2
 105 #define RTC_PRIORITY    TIMER_PRIORITY
 106 #define SCIF_PRIORITY   3
 107 #define INTD_PRIORITY   3
 108 #define IRL3_PRIORITY   4
 109 #define INTC_PRIORITY   6
 110 #define IRL2_PRIORITY   7
 111 #define INTB_PRIORITY   9
 112 #define IRL1_PRIORITY   10
 113 #define INTA_PRIORITY   12
 114 #define IRL0_PRIORITY   13
 115 #define TOP_PRIORITY    15
 116
 117 extern void disable_irq(unsigned int);
 118 extern void disable_irq_nosync(unsigned int);
 119 extern void enable_irq(unsigned int);
 120
 121 extern int intc_evt_to_irq[(0xE20/0x20)+1];
 122 int intc_irq_describe(char* p, int irq);
 123
 124 #define irq_canonicalize(irq)   (irq)
 125
 126 #ifdef CONFIG_SH_CAYMAN
 127 int cayman_irq_demux(int evt);
 128 int cayman_irq_describe(char* p, int irq);
 129 #define irq_demux(x) cayman_irq_demux(x)
 130 #define irq_describe(p, x) cayman_irq_describe(p, x)
 131 #else
 132 #define irq_demux(x) (intc_evt_to_irq[x])
 133 #define irq_describe(p, x) intc_irq_describe(p, x)
 134 #endif
 135
 136 /*
 137  * Function for "on chip support modules".
 138  */
 139
 140 /*
 141  * SH-5 supports Priority based interrupts only.
 142  * Interrupt priorities are defined at platform level.
 143  */
 144 #define set_ipr_data(a, b, c, d)
 145 #define make_ipr_irq(a)
 146 #define make_imask_irq(a)
 147
 148 #endif /* __ASM_SH64_IRQ_H */