patch-2.3.12 linux/include/asm-i386/parport.h

• Lines: 47
• Date: Tue Jul 27 13:55:52 1999
• Orig file: v2.3.11/linux/include/asm-i386/parport.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.11/linux/include/asm-i386/parport.h linux/include/asm-i386/parport.h
@@ -0,0 +1,46 @@
+/*
+ * parport.h: ia32-specific parport initialisation
+ *
+ * Copyright (C) 1999  Tim Waugh <tim@cyberelk.demon.co.uk>
+ *
+ * This file should only be included by drivers/parport/parport_pc.c.
+ */
+
+#ifndef _ASM_I386_PARPORT_H
+#define _ASM_I386_PARPORT_H 1
+
+/* Maximum number of ports to support.  It is useless to set this greater
+   than PARPORT_MAX (in <linux/parport.h>).  */
+#define PARPORT_PC_MAX_PORTS  8
+
+static int __init probe_one_port(unsigned long int base,
+				 unsigned long int base_hi,
+				 int irq, int dma);
+static int __init parport_pc_init_pci(int irq, int dma);
+
+static int user_specified __initdata = 0;
+int __init
+parport_pc_init(int *io, int *io_hi, int *irq, int *dma)
+{
+	int count = 0, i = 0;
+
+	if (io && *io) {
+		/* Only probe the ports we were given. */
+		user_specified = 1;
+		do {
+			if (!*io_hi) *io_hi = 0x400 + *io;
+			count += probe_one_port(*(io++), *(io_hi++),
+						*(irq++), *(dma++));
+		} while (*io && (++i < PARPORT_PC_MAX_PORTS));
+	} else {
+		/* Probe all the likely ports. */
+		count += probe_one_port(0x3bc, 0x7bc, irq[0], dma[0]);
+		count += probe_one_port(0x378, 0x778, irq[0], dma[0]);
+		count += probe_one_port(0x278, 0x678, irq[0], dma[0]);
+		count += parport_pc_init_pci (irq[0], dma[0]);
+	}
+
+        return count;
+}
+
+#endif /* !(_ASM_I386_PARPORT_H) */