patch-1.3.4 linux/include/asm-sparc/auxio.h

• Lines: 36
• Date: Thu Jun 8 23:41:46 1995
• Orig file: v1.3.3/linux/include/asm-sparc/auxio.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.3/linux/include/asm-sparc/auxio.h linux/include/asm-sparc/auxio.h
@@ -0,0 +1,35 @@
+/* auxio.h:  Definitons 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
+
+/* This defines the register as I know it on the Sun4c, it may be
+ * different or not exist at all on sun4m's.
+ */
+
+#define AUXIO_IOADDR  0xf7400000  /* Physical address is IO space */
+
+/* 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 on machines that
+ * have a drive.
+ */
+
+#define AUXIO_ORMEIN      0xf0    /* All writes must set these bits. */
+#define AUXIO_FLPY_DENS   0x20    /* Floppy density, high if set. */
+#define AUXIO_FLPY_DCHG   0x10    /* A disk change occurred. */
+#define AUXIO_FLPY_DSEL   0x08    /* Drive select, 0 'a drive' 1 'b drive'. */
+#define AUXIO_FLPY_TCNT   0x04    /* Floppy terminal count... ??? */
+#define AUXIO_FLPY_EJCT   0x02    /* Eject floppy disk. */
+#define AUXIO_LED         0x01    /* On if set, off if unset. */
+
+#define AUXREG ((volatile unsigned char *)(AUXIO_VADDR + 3))
+
+#define TURN_ON_LED  *AUXREG = AUXIO_ORMEIN | AUXIO_FLPY_EJCT | AUXIO_LED
+#define TURN_OFF_LED *AUXREG = AUXIO_ORMEIN | AUXIO_FLPY_EJCT
+#define FLIP_LED     *AUXREG = (*AUXREG | AUXIO_ORMEIN) ^ AUXIO_LED
+
+#endif /* !(_SPARC_AUXIO_H) */