patch-2.1.30 linux/include/asm-sparc64/auxio.h

• Lines: 73
• Date: Thu Mar 20 16:45:06 1997
• Orig file: v2.1.29/linux/include/asm-sparc64/auxio.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.29/linux/include/asm-sparc64/auxio.h linux/include/asm-sparc64/auxio.h
@@ -0,0 +1,72 @@
+/* $Id: auxio.h,v 1.1 1997/03/14 21:05:27 jj 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>
+
+/* 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 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__
+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) {
+		regval = *AUXREG;
+		*AUXREG = ((regval | bits_on) & ~bits_off) | AUXIO_ORMEIN4M;
+	}
+	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) */