arch/mips/include/asm/sgi/ip22.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License. See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * ip22.h: Definitions for SGI IP22 machines
   7  *
   8  * Copyright (C) 1996 David S. Miller
   9  * Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
  10  */
  11
  12 #ifndef _SGI_IP22_H
  13 #define _SGI_IP22_H
  14
  15 /*
  16  * These are the virtual IRQ numbers, we divide all IRQ's into
  17  * 'spaces', the 'space' determines where and how to enable/disable
  18  * that particular IRQ on an SGI machine. HPC DMA and MC DMA interrupts
  19  * are not supported this way. Driver is supposed to allocate HPC/MC
  20  * interrupt as shareable and then look to proper status bit (see
  21  * HAL2 driver). This will prevent many complications, trust me ;-)
  22  */
  23
  24 #include <irq.h>
  25 #include <asm/sgi/ioc.h>
  26
  27 #define SGINT_EISA      0       /* 16 EISA irq levels (Indigo2) */
  28 #define SGINT_CPU       MIPS_CPU_IRQ_BASE       /* MIPS CPU define 8 interrupt sources */
  29 #define SGINT_LOCAL0    (SGINT_CPU+8)   /* 8 local0 irq levels */
  30 #define SGINT_LOCAL1    (SGINT_CPU+16)  /* 8 local1 irq levels */
  31 #define SGINT_LOCAL2    (SGINT_CPU+24)  /* 8 local2 vectored irq levels */
  32 #define SGINT_LOCAL3    (SGINT_CPU+32)  /* 8 local3 vectored irq levels */
  33 #define SGINT_END       (SGINT_CPU+40)  /* End of 'spaces' */
  34
  35 /*
  36  * Individual interrupt definitions for the Indy and Indigo2
  37  */
  38
  39 #define SGI_SOFT_0_IRQ  SGINT_CPU + 0
  40 #define SGI_SOFT_1_IRQ  SGINT_CPU + 1
  41 #define SGI_LOCAL_0_IRQ SGINT_CPU + 2
  42 #define SGI_LOCAL_1_IRQ SGINT_CPU + 3
  43 #define SGI_8254_0_IRQ  SGINT_CPU + 4
  44 #define SGI_8254_1_IRQ  SGINT_CPU + 5
  45 #define SGI_BUSERR_IRQ  SGINT_CPU + 6
  46 #define SGI_TIMER_IRQ   SGINT_CPU + 7
  47
  48 #define SGI_FIFO_IRQ    SGINT_LOCAL0 + 0        /* FIFO full */
  49 #define SGI_GIO_0_IRQ   SGI_FIFO_IRQ            /* GIO-0 */
  50 #define SGI_WD93_0_IRQ  SGINT_LOCAL0 + 1        /* 1st onboard WD93 */
  51 #define SGI_WD93_1_IRQ  SGINT_LOCAL0 + 2        /* 2nd onboard WD93 */
  52 #define SGI_ENET_IRQ    SGINT_LOCAL0 + 3        /* onboard ethernet */
  53 #define SGI_MCDMA_IRQ   SGINT_LOCAL0 + 4        /* MC DMA done */
  54 #define SGI_PARPORT_IRQ SGINT_LOCAL0 + 5        /* Parallel port */
  55 #define SGI_GIO_1_IRQ   SGINT_LOCAL0 + 6        /* GE / GIO-1 / 2nd-HPC */
  56 #define SGI_MAP_0_IRQ   SGINT_LOCAL0 + 7        /* Mappable interrupt 0 */
  57
  58 #define SGI_GPL0_IRQ    SGINT_LOCAL1 + 0        /* General Purpose LOCAL1_N<0> */
  59 #define SGI_PANEL_IRQ   SGINT_LOCAL1 + 1        /* front panel */
  60 #define SGI_GPL2_IRQ    SGINT_LOCAL1 + 2        /* General Purpose LOCAL1_N<2> */
  61 #define SGI_MAP_1_IRQ   SGINT_LOCAL1 + 3        /* Mappable interrupt 1 */
  62 #define SGI_HPCDMA_IRQ  SGINT_LOCAL1 + 4        /* HPC DMA done */
  63 #define SGI_ACFAIL_IRQ  SGINT_LOCAL1 + 5        /* AC fail */
  64 #define SGI_VINO_IRQ    SGINT_LOCAL1 + 6        /* Indy VINO */
  65 #define SGI_GIO_2_IRQ   SGINT_LOCAL1 + 7        /* Vert retrace / GIO-2 */
  66
  67 /* Mapped interrupts. These interrupts may be mapped to either 0, or 1 */
  68 #define SGI_VERT_IRQ    SGINT_LOCAL2 + 0        /* INT3: newport vertical status */
  69 #define SGI_EISA_IRQ    SGINT_LOCAL2 + 3        /* EISA interrupts */
  70 #define SGI_KEYBD_IRQ   SGINT_LOCAL2 + 4        /* keyboard */
  71 #define SGI_SERIAL_IRQ  SGINT_LOCAL2 + 5        /* onboard serial */
  72 #define SGI_GIOEXP0_IRQ (SGINT_LOCAL2 + 6)      /* Indy GIO EXP0 */
  73 #define SGI_GIOEXP1_IRQ (SGINT_LOCAL2 + 7)      /* Indy GIO EXP1 */
  74
  75 #define ip22_is_fullhouse()     (sgioc->sysid & SGIOC_SYSID_FULLHOUSE)
  76
  77 extern unsigned short ip22_eeprom_read(unsigned int *ctrl, int reg);
  78 extern unsigned short ip22_nvram_read(int reg);
  79 extern void ip22_be_interrupt(int irq);
  80 extern void ip22_be_init(void) __init;
  81 extern void indy_8254timer_irq(void);
  82
  83 #endif