90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* auxio.h: Definitions and code for the Auxiliary I/O register.
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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*/
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#ifndef _SPARC_AUXIO_H
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#define _SPARC_AUXIO_H
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#include <asm/vaddrs.h>
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/* This register is an unsigned char in IO space. It does two things.
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* First, it is used to control the front panel LED light on machines
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* that have it (good for testing entry points to trap handlers and irq's)
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* Secondly, it controls various floppy drive parameters.
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*/
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#define AUXIO_ORMEIN 0xf0 /* All writes must set these bits. */
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#define AUXIO_ORMEIN4M 0xc0 /* sun4m - All writes must set these bits. */
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#define AUXIO_FLPY_DENS 0x20 /* Floppy density, high if set. Read only. */
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#define AUXIO_FLPY_DCHG 0x10 /* A disk change occurred. Read only. */
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#define AUXIO_EDGE_ON 0x10 /* sun4m - On means Jumper block is in. */
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#define AUXIO_FLPY_DSEL 0x08 /* Drive select/start-motor. Write only. */
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#define AUXIO_LINK_TEST 0x08 /* sun4m - On means TPE Carrier detect. */
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/* Set the following to one, then zero, after doing a pseudo DMA transfer. */
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#define AUXIO_FLPY_TCNT 0x04 /* Floppy terminal count. Write only. */
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/* Set the following to zero to eject the floppy. */
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#define AUXIO_FLPY_EJCT 0x02 /* Eject floppy disk. Write only. */
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#define AUXIO_LED 0x01 /* On if set, off if unset. Read/Write */
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#ifndef __ASSEMBLY__
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/*
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* NOTE: these routines are implementation dependent--
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* understand the hardware you are querying!
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*/
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void set_auxio(unsigned char bits_on, unsigned char bits_off);
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unsigned char get_auxio(void); /* .../asm/floppy.h */
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/*
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* The following routines are provided for driver-compatibility
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* with sparc64 (primarily sunlance.c)
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*/
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#define AUXIO_LTE_ON 1
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#define AUXIO_LTE_OFF 0
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/* auxio_set_lte - Set Link Test Enable (TPE Link Detect)
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*
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* on - AUXIO_LTE_ON or AUXIO_LTE_OFF
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*/
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#define auxio_set_lte(on) \
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do { \
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if(on) { \
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set_auxio(AUXIO_LINK_TEST, 0); \
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} else { \
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set_auxio(0, AUXIO_LINK_TEST); \
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} \
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} while (0)
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#define AUXIO_LED_ON 1
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#define AUXIO_LED_OFF 0
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/* auxio_set_led - Set system front panel LED
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*
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* on - AUXIO_LED_ON or AUXIO_LED_OFF
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*/
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#define auxio_set_led(on) \
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do { \
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if(on) { \
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set_auxio(AUXIO_LED, 0); \
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} else { \
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set_auxio(0, AUXIO_LED); \
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} \
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} while (0)
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#endif /* !(__ASSEMBLY__) */
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/* AUXIO2 (Power Off Control) */
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extern volatile u8 __iomem *auxio_power_register;
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#define AUXIO_POWER_DETECT_FAILURE 32
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#define AUXIO_POWER_CLEAR_FAILURE 2
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#define AUXIO_POWER_OFF 1
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#endif /* !(_SPARC_AUXIO_H) */
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