Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/sparc/include/asm/auxio_32.h
26481 views
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 ([email protected])

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) */

90


91