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 */
38void set_auxio(unsigned char bits_on, unsigned char bits_off);
39unsigned 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) \
54do { \
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) \
70do { \
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) */
82extern 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) */
90