arch/sparc/include/asm/auxio_32.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * auxio.h:  Definitions and code for the Auxiliary I/O register.
   4  *
   5  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   6  */
   7 #ifndef _SPARC_AUXIO_H
   8 #define _SPARC_AUXIO_H
   9
  10 #include <asm/vaddrs.h>
  11
  12 /* This register is an unsigned char in IO space.  It does two things.
  13  * First, it is used to control the front panel LED light on machines
  14  * that have it (good for testing entry points to trap handlers and irq's)
  15  * Secondly, it controls various floppy drive parameters.
  16  */
  17 #define AUXIO_ORMEIN      0xf0    /* All writes must set these bits. */
  18 #define AUXIO_ORMEIN4M    0xc0    /* sun4m - All writes must set these bits. */
  19 #define AUXIO_FLPY_DENS   0x20    /* Floppy density, high if set. Read only. */
  20 #define AUXIO_FLPY_DCHG   0x10    /* A disk change occurred.  Read only. */
  21 #define AUXIO_EDGE_ON     0x10    /* sun4m - On means Jumper block is in. */
  22 #define AUXIO_FLPY_DSEL   0x08    /* Drive select/start-motor. Write only. */
  23 #define AUXIO_LINK_TEST   0x08    /* sun4m - On means TPE Carrier detect. */
  24
  25 /* Set the following to one, then zero, after doing a pseudo DMA transfer. */
  26 #define AUXIO_FLPY_TCNT   0x04    /* Floppy terminal count. Write only. */
  27
  28 /* Set the following to zero to eject the floppy. */
  29 #define AUXIO_FLPY_EJCT   0x02    /* Eject floppy disk.  Write only. */
  30 #define AUXIO_LED         0x01    /* On if set, off if unset. Read/Write */
  31
  32 #ifndef __ASSEMBLY__
  33
  34 /*
  35  * NOTE: these routines are implementation dependent--
  36  * understand the hardware you are querying!
  37  */
  38 void set_auxio(unsigned char bits_on, unsigned char bits_off);
  39 unsigned char get_auxio(void); /* .../asm/floppy.h */
  40
  41 /*
  42  * The following routines are provided for driver-compatibility
  43  * with sparc64 (primarily sunlance.c)
  44  */
  45
  46 #define AUXIO_LTE_ON    1
  47 #define AUXIO_LTE_OFF   0
  48
  49 /* auxio_set_lte - Set Link Test Enable (TPE Link Detect)
  50  *
  51  * on - AUXIO_LTE_ON or AUXIO_LTE_OFF
  52  */
  53 #define auxio_set_lte(on) \
  54 do { \
  55         if(on) { \
  56                 set_auxio(AUXIO_LINK_TEST, 0); \
  57         } else { \
  58                 set_auxio(0, AUXIO_LINK_TEST); \
  59         } \
  60 } while (0)
  61
  62 #define AUXIO_LED_ON    1
  63 #define AUXIO_LED_OFF   0
  64
  65 /* auxio_set_led - Set system front panel LED
  66  *
  67  * on - AUXIO_LED_ON or AUXIO_LED_OFF
  68  */
  69 #define auxio_set_led(on) \
  70 do { \
  71         if(on) { \
  72                 set_auxio(AUXIO_LED, 0); \
  73         } else { \
  74                 set_auxio(0, AUXIO_LED); \
  75         } \
  76 } while (0)
  77
  78 #endif /* !(__ASSEMBLY__) */
  79
  80
  81 /* AUXIO2 (Power Off Control) */
  82 extern volatile u8 __iomem *auxio_power_register;
  83
  84 #define AUXIO_POWER_DETECT_FAILURE      32
  85 #define AUXIO_POWER_CLEAR_FAILURE       2
  86 #define AUXIO_POWER_OFF                 1
  87
  88
  89 #endif /* !(_SPARC_AUXIO_H) */