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  * Copyright (C) 2001, 2002, 2003  Maciej W. Rozycki
  12  */
  13
  14 #ifndef __ASM_DEC_INTERRUPTS_H
  15 #define __ASM_DEC_INTERRUPTS_H
  16
  17 #include <irq.h>
  18 #include <asm/mipsregs.h>
  19
  20
  21 /*
  22  * The list of possible system devices which provide an
  23  * interrupt.  Not all devices exist on a given system.
  24  */
  25 #define DEC_IRQ_CASCADE         0       /* cascade from CSR or I/O ASIC */
  26
  27 /* Ordinary interrupts */
  28 #define DEC_IRQ_AB_RECV         1       /* ACCESS.bus receive */
  29 #define DEC_IRQ_AB_XMIT         2       /* ACCESS.bus transmit */
  30 #define DEC_IRQ_DZ11            3       /* DZ11 (DC7085) serial */
  31 #define DEC_IRQ_ASC             4       /* ASC (NCR53C94) SCSI */
  32 #define DEC_IRQ_FLOPPY          5       /* 82077 FDC */
  33 #define DEC_IRQ_FPU             6       /* R3k FPU */
  34 #define DEC_IRQ_HALT            7       /* HALT button or from ACCESS.Bus */
  35 #define DEC_IRQ_ISDN            8       /* Am79C30A ISDN */
  36 #define DEC_IRQ_LANCE           9       /* LANCE (Am7990) Ethernet */
  37 #define DEC_IRQ_BUS             10      /* memory, I/O bus read/write errors */
  38 #define DEC_IRQ_PSU             11      /* power supply unit warning */
  39 #define DEC_IRQ_RTC             12      /* DS1287 RTC */
  40 #define DEC_IRQ_SCC0            13      /* SCC (Z85C30) serial #0 */
  41 #define DEC_IRQ_SCC1            14      /* SCC (Z85C30) serial #1 */
  42 #define DEC_IRQ_SII             15      /* SII (DC7061) SCSI */
  43 #define DEC_IRQ_TC0             16      /* TURBOchannel slot #0 */
  44 #define DEC_IRQ_TC1             17      /* TURBOchannel slot #1 */
  45 #define DEC_IRQ_TC2             18      /* TURBOchannel slot #2 */
  46 #define DEC_IRQ_TIMER           19      /* ARC periodic timer */
  47 #define DEC_IRQ_VIDEO           20      /* framebuffer */
  48
  49 /* I/O ASIC DMA interrupts */
  50 #define DEC_IRQ_ASC_MERR        21      /* ASC memory read error */
  51 #define DEC_IRQ_ASC_ERR         22      /* ASC page overrun */
  52 #define DEC_IRQ_ASC_DMA         23      /* ASC buffer pointer loaded */
  53 #define DEC_IRQ_FLOPPY_ERR      24      /* FDC error */
  54 #define DEC_IRQ_ISDN_ERR        25      /* ISDN memory read/overrun error */
  55 #define DEC_IRQ_ISDN_RXDMA      26      /* ISDN recv buffer pointer loaded */
  56 #define DEC_IRQ_ISDN_TXDMA      27      /* ISDN xmit buffer pointer loaded */
  57 #define DEC_IRQ_LANCE_MERR      28      /* LANCE memory read error */
  58 #define DEC_IRQ_SCC0A_RXERR     29      /* SCC0A (printer) receive overrun */
  59 #define DEC_IRQ_SCC0A_RXDMA     30      /* SCC0A receive half page */
  60 #define DEC_IRQ_SCC0A_TXERR     31      /* SCC0A xmit memory read/overrun */
  61 #define DEC_IRQ_SCC0A_TXDMA     32      /* SCC0A transmit page end */
  62 #define DEC_IRQ_AB_RXERR        33      /* ACCESS.bus receive overrun */
  63 #define DEC_IRQ_AB_RXDMA        34      /* ACCESS.bus receive half page */
  64 #define DEC_IRQ_AB_TXERR        35      /* ACCESS.bus xmit memory read/ovrn */
  65 #define DEC_IRQ_AB_TXDMA        36      /* ACCESS.bus transmit page end */
  66 #define DEC_IRQ_SCC1A_RXERR     37      /* SCC1A (modem) receive overrun */
  67 #define DEC_IRQ_SCC1A_RXDMA     38      /* SCC1A receive half page */
  68 #define DEC_IRQ_SCC1A_TXERR     39      /* SCC1A xmit memory read/overrun */
  69 #define DEC_IRQ_SCC1A_TXDMA     40      /* SCC1A transmit page end */
  70
  71 /* TC5 & TC6 are virtual slots for KN02's onboard devices */
  72 #define DEC_IRQ_TC5             DEC_IRQ_ASC     /* virtual PMAZ-AA */
  73 #define DEC_IRQ_TC6             DEC_IRQ_LANCE   /* virtual PMAD-AA */
  74
  75 #define DEC_NR_INTS             41
  76
  77
  78 /* Largest of cpu mask_nr tables. */
  79 #define DEC_MAX_CPU_INTS        6
  80 /* Largest of asic mask_nr tables. */
  81 #define DEC_MAX_ASIC_INTS       9
  82
  83
  84 /*
  85  * CPU interrupt bits common to all systems.
  86  */
  87 #define DEC_CPU_INR_FPU         7       /* R3k FPU */
  88 #define DEC_CPU_INR_SW1         1       /* software #1 */
  89 #define DEC_CPU_INR_SW0         0       /* software #0 */
  90
  91 #define DEC_CPU_IRQ_BASE        MIPS_CPU_IRQ_BASE       /* first IRQ assigned to CPU */
  92
  93 #define DEC_CPU_IRQ_NR(n)       ((n) + DEC_CPU_IRQ_BASE)
  94 #define DEC_CPU_IRQ_MASK(n)     (1 << ((n) + CAUSEB_IP))
  95 #define DEC_CPU_IRQ_ALL         (0xff << CAUSEB_IP)
  96
  97
  98 #ifndef __ASSEMBLY__
  99
 100 /*
 101  * Interrupt table structures to hide differences between systems.
 102  */
 103 typedef union { int i; void *p; } int_ptr;
 104 extern int dec_interrupt[DEC_NR_INTS];
 105 extern int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2];
 106 extern int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2];
 107 extern int cpu_fpu_mask;
 108
 109
 110 /*
 111  * Common interrupt routine prototypes for all DECStations
 112  */
 113 extern void kn02_io_int(void);
 114 extern void kn02xa_io_int(void);
 115 extern void kn03_io_int(void);
 116 extern void asic_dma_int(void);
 117 extern void asic_all_int(void);
 118 extern void kn02_all_int(void);
 119 extern void cpu_all_int(void);
 120
 121 extern void dec_intr_unimplemented(void);
 122 extern void asic_intr_unimplemented(void);
 123
 124 #endif /* __ASSEMBLY__ */
 125
 126 #endif