auxio.h
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- /* $Id: auxio.h,v 1.3 2001/06/05 08:16:34 davem Exp $
- * auxio.h: Definitions and code for the Auxiliary I/O register.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
- #ifndef _SPARC64_AUXIO_H
- #define _SPARC64_AUXIO_H
- #include <asm/system.h>
- #include <asm/io.h>
- /* FIXME: All of this should be checked for sun4u. It has /sbus/auxio, but
- I don't know whether it is the same and don't have a floppy */
- extern unsigned long 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 (auxio_register)
- /* These are available on sun4c */
- #define TURN_ON_LED
- do { if (AUXREG)
- sbus_writeb(sbus_readb(AUXREG) |
- (AUXIO_ORMEIN | AUXIO_LED), AUXREG);
- } while(0)
- #define TURN_OFF_LED
- do { if (AUXREG)
- sbus_writeb((sbus_readb(AUXREG) |
- AUXIO_ORMEIN) & (~AUXIO_LED),
- AUXREG);
- } while(0)
- #define FLIP_LED
- do { if (AUXREG)
- sbus_writeb((sbus_readb(AUXREG) |
- AUXIO_ORMEIN) ^ AUXIO_LEN,
- AUXREG);
- } while(0)
- #define FLPY_MOTORON
- do { if (AUXREG)
- sbus_writeb(sbus_readb(AUXREG) |
- (AUXIO_ORMEIN | AUXIO_FLPY_DSEL),
- AUXREG);
- } while(0)
- #define FLPY_MOTOROFF
- do { if (AUXREG)
- sbus_writeb((sbus_readb(AUXREG) |
- AUXIO_ORMEIN) & (~AUXIO_FLPY_DSEL),
- AUXREG);
- } while(0)
- #define FLPY_TCNTON
- do { if (AUXREG)
- sbus_writeb((sbus_readb(AUXREG) |
- AUXIO_ORMEIN) | AUXIO_FLPY_TCNT,
- AUXREG);
- } while(0)
- #define FLPY_TCNTOFF
- do { if (AUXREG)
- sbus_writeb((sbus_readb(AUXREG) |
- AUXIO_ORMEIN) & (~AUXIO_FLPY_TCNT),
- AUXREG);
- } while(0)
- #ifndef __ASSEMBLY__
- extern __inline__ void set_auxio(unsigned char bits_on, unsigned char bits_off)
- {
- unsigned char regval;
- unsigned long flags;
- save_flags(flags); cli();
- if(AUXREG) {
- unsigned char newval;
- regval = sbus_readb(AUXREG);
- newval = regval | bits_on;
- newval &= ~bits_off;
- newval |= AUXIO_ORMEIN4M;
- sbus_writeb(newval, AUXREG);
- }
- restore_flags(flags);
- }
- #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) */