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