arch/sparc/include/asm/auxio_32.h

   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  */
  37 extern void set_auxio(unsigned char bits_on, unsigned char bits_off);
  38 extern unsigned 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) \
  53 do { \
  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) \
  69 do { \
  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) */
  81 extern __volatile__ unsigned char * 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) */