auxio.h
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- /* $Id: auxio.h,v 1.18 1997/11/07 15:01:45 jj Exp $
- * 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/system.h>
- #include <asm/vaddrs.h>
- extern unsigned char *auxio_register;
- /* 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 */
- #define AUXREG ((volatile unsigned char *)(auxio_register))
- /* These are available on sun4c */
- #define TURN_ON_LED if (AUXREG) *AUXREG = (*AUXREG | AUXIO_ORMEIN | AUXIO_LED)
- #define TURN_OFF_LED if (AUXREG) *AUXREG = ((*AUXREG | AUXIO_ORMEIN) & (~AUXIO_LED))
- #define FLIP_LED if (AUXREG) *AUXREG = ((*AUXREG | AUXIO_ORMEIN) ^ AUXIO_LED)
- #define FLPY_MOTORON if (AUXREG) *AUXREG = ((*AUXREG | AUXIO_ORMEIN) | AUXIO_FLPY_DSEL)
- #define FLPY_MOTOROFF if (AUXREG) *AUXREG = ((*AUXREG | AUXIO_ORMEIN) & (~AUXIO_FLPY_DSEL))
- #define FLPY_TCNTON if (AUXREG) *AUXREG = ((*AUXREG | AUXIO_ORMEIN) | AUXIO_FLPY_TCNT)
- #define FLPY_TCNTOFF if (AUXREG) *AUXREG = ((*AUXREG | AUXIO_ORMEIN) & (~AUXIO_FLPY_TCNT))
- #ifndef __ASSEMBLY__
- #define set_auxio(bits_on, bits_off)
- do {
- unsigned char regval;
- unsigned long flags;
- save_flags(flags); cli();
- switch(sparc_cpu_model) {
- case sun4c:
- regval = *AUXREG;
- *AUXREG = ((regval | bits_on) & ~bits_off) | AUXIO_ORMEIN;
- break;
- case sun4m:
- if(!AUXREG)
- break; /* VME chassic sun4m, no auxio. */
- regval = *AUXREG;
- *AUXREG = ((regval | bits_on) & ~bits_off) | AUXIO_ORMEIN4M;
- break;
- case sun4d:
- break;
- default:
- panic("Can't set AUXIO register on this machine.");
- };
- restore_flags(flags);
- } while(0)
- #endif /* !(__ASSEMBLY__) */
- /* AUXIO2 (Power Off Control) */
- extern __volatile__ unsigned char * auxio_power_register;
- #define AUXIO_POWER_DETECT_FAILURE 32
- #define AUXIO_POWER_CLEAR_FAILURE 2
- #define AUXIO_POWER_OFF 1
- #endif /* !(_SPARC_AUXIO_H) */