patch-2.2.18 linux/drivers/block/falconide.c

• Lines: 73
• Date: Sat Oct 14 00:06:42 2000
• Orig file: v2.2.17/drivers/block/falconide.c
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/block/falconide.c linux/drivers/block/falconide.c
@@ -0,0 +1,72 @@
+/*
+ *  linux/drivers/block/falconide.c -- Atari Falcon IDE Driver
+ *
+ *     Created 12 Jul 1997 by Geert Uytterhoeven
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/blkdev.h>
+#include <linux/hdreg.h>
+
+#include "ide.h"
+
+#include <asm/atarihw.h>
+#include <asm/atariints.h>
+#include <asm/atari_stdma.h>
+
+
+    /*
+     *  Base of the IDE interface
+     */
+
+#define ATA_HD_BASE	0xfff00000
+
+    /*
+     *  Offsets from the above base
+     */
+
+#define ATA_HD_DATA	0x00
+#define ATA_HD_ERROR	0x05		/* see err-bits */
+#define ATA_HD_NSECTOR	0x09		/* nr of sectors to read/write */
+#define ATA_HD_SECTOR	0x0d		/* starting sector */
+#define ATA_HD_LCYL	0x11		/* starting cylinder */
+#define ATA_HD_HCYL	0x15		/* high byte of starting cyl */
+#define ATA_HD_SELECT	0x19		/* 101dhhhh , d=drive, hhhh=head */
+#define ATA_HD_STATUS	0x1d		/* see status-bits */
+#define ATA_HD_CONTROL	0x39
+
+static const int falconide_offsets[IDE_NR_PORTS] = {
+    ATA_HD_DATA, ATA_HD_ERROR, ATA_HD_NSECTOR, ATA_HD_SECTOR, ATA_HD_LCYL,
+    ATA_HD_HCYL, ATA_HD_SELECT, ATA_HD_STATUS, ATA_HD_CONTROL
+};
+
+
+    /*
+     *  Probe for a Falcon IDE interface
+     */
+
+int falconide_probe_hwif(int index, ide_hwif_t *hwif)
+{
+    static int falcon_index = 0;
+
+    if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
+	return 0;
+
+    if (!falcon_index) {
+	printk("ide%d: Falcon IDE interface\n", index);
+	falcon_index = index+1;
+    }
+    if (falcon_index == index+1) {
+	ide_setup_ports(hwif, (ide_ioreg_t)ATA_HD_BASE, falconide_offsets, 0,
+			NULL);
+	hwif->irq = IRQ_MFP_IDE;
+	return 1;
+    }
+    return 0;
+}