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