LXR linux/arch/sparc/include/asm/auxio

   1/*
   2 * auxio.h:  Definitions and code for the Auxiliary I/O register.
   3 *
   4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   5 */
   6#ifndef _SPARC_AUXIO_H
   7#define _SPARC_AUXIO_H
   8
   9#include <asm/vaddrs.h>
  10
  11/* This register is an unsigned char in IO space.  It does two things.
  12 * First, it is used to control the front panel LED light on machines
  13 * that have it (good for testing entry points to trap handlers and irq's)
  14 * Secondly, it controls various floppy drive parameters.
  15 */
  16#define AUXIO_ORMEIN      0xf0    /* All writes must set these bits. */
  17#define AUXIO_ORMEIN4M    0xc0    /* sun4m - All writes must set these bits. */
  18#define AUXIO_FLPY_DENS   0x20    /* Floppy density, high if set. Read only. */
  19#define AUXIO_FLPY_DCHG   0x10    /* A disk change occurred.  Read only. */
  20#define AUXIO_EDGE_ON     0x10    /* sun4m - On means Jumper block is in. */
  21#define AUXIO_FLPY_DSEL   0x08    /* Drive select/start-motor. Write only. */
  22#define AUXIO_LINK_TEST   0x08    /* sun4m - On means TPE Carrier detect. */
  23
  24/* Set the following to one, then zero, after doing a pseudo DMA transfer. */
  25#define AUXIO_FLPY_TCNT   0x04    /* Floppy terminal count. Write only. */
  26
  27/* Set the following to zero to eject the floppy. */
  28#define AUXIO_FLPY_EJCT   0x02    /* Eject floppy disk.  Write only. */
  29#define AUXIO_LED         0x01    /* On if set, off if unset. Read/Write */
  30
  31#ifndef __ASSEMBLY__
  32
  33/*
  34 * NOTE: these routines are implementation dependent--
  35 * understand the hardware you are querying!
  36 */
  37void set_auxio(unsigned char bits_on, unsigned char bits_off);
  38unsigned char get_auxio(void); /* .../asm/floppy.h */
  39
  40/*
  41 * The following routines are provided for driver-compatibility
  42 * with sparc64 (primarily sunlance.c)
  43 */
  44
  45#define AUXIO_LTE_ON    1
  46#define AUXIO_LTE_OFF   0
  47
  48/* auxio_set_lte - Set Link Test Enable (TPE Link Detect)
  49 *
  50 * on - AUXIO_LTE_ON or AUXIO_LTE_OFF
  51 */
  52#define auxio_set_lte(on) \
  53do { \
  54        if(on) { \
  55                set_auxio(AUXIO_LINK_TEST, 0); \
  56        } else { \
  57                set_auxio(0, AUXIO_LINK_TEST); \
  58        } \
  59} while (0)
  60
  61#define AUXIO_LED_ON    1
  62#define AUXIO_LED_OFF   0
  63
  64/* auxio_set_led - Set system front panel LED
  65 *
  66 * on - AUXIO_LED_ON or AUXIO_LED_OFF
  67 */
  68#define auxio_set_led(on) \
  69do { \
  70        if(on) { \
  71                set_auxio(AUXIO_LED, 0); \
  72        } else { \
  73                set_auxio(0, AUXIO_LED); \
  74        } \
  75} while (0)
  76
  77#endif /* !(__ASSEMBLY__) */
  78
  79
  80/* AUXIO2 (Power Off Control) */
  81extern volatile u8 __iomem *auxio_power_register;
  82
  83#define AUXIO_POWER_DETECT_FAILURE      32
  84#define AUXIO_POWER_CLEAR_FAILURE       2
  85#define AUXIO_POWER_OFF                 1
  86
  87
  88#endif /* !(_SPARC_AUXIO_H) */
  89