patch-2.4.22 linux-2.4.22/arch/mips/vr41xx/ibm-workpad/ide-workpad.c

• Lines: 99
• Date: 2003-08-25 04:44:40.000000000 -0700
• Orig file: linux-2.4.21/arch/mips/vr41xx/ibm-workpad/ide-workpad.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/mips/vr41xx/ibm-workpad/ide-workpad.c linux-2.4.22/arch/mips/vr41xx/ibm-workpad/ide-workpad.c
@@ -0,0 +1,98 @@
+/*
+ * 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.
+ *
+ * IDE routines for typical pc-like standard configurations for the IBM WorkPad z50.
+ *
+ * Copyright (C) 1998, 1999, 2001 by Ralf Baechle
+ */
+/*
+ * Changes:
+ *  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>  Sun, 24 Feb 2002
+ *  - Added IBM WorkPad z50 support.
+ */
+#include <linux/sched.h>
+#include <linux/ide.h>
+#include <linux/ioport.h>
+#include <linux/hdreg.h>
+#include <asm/ptrace.h>
+#include <asm/hdreg.h>
+
+static int workpad_ide_default_irq(ide_ioreg_t base)
+{
+	return 49;
+}
+
+static ide_ioreg_t workpad_ide_default_io_base(int index)
+{
+	switch (index) {
+		case 0: return 0x1f0;
+		case 1: return 0x170;
+		case 2: return 0x1e8;
+		case 3: return 0x168;
+		case 4: return 0x1e0;
+		case 5: return 0x160;
+	}
+	return 0;
+}
+
+static void workpad_ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port,
+                                        ide_ioreg_t ctrl_port, int *irq)
+{
+	ide_ioreg_t reg = data_port;
+	int i;
+
+	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
+		hw->io_ports[i] = reg;
+		reg += 1;
+	}
+	if (ctrl_port) {
+		hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
+	} else {
+		hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
+	}
+	if (irq != NULL)
+		*irq = 0;
+	hw->io_ports[IDE_IRQ_OFFSET] = 0;
+}
+
+static int workpad_ide_request_irq(unsigned int irq,
+                                   void (*handler)(int,void *, struct pt_regs *),
+                                   unsigned long flags, const char *device,
+                                   void *dev_id)
+{
+	return request_irq(irq, handler, SA_SHIRQ, device, dev_id);
+}			
+
+static void workpad_ide_free_irq(unsigned int irq, void *dev_id)
+{
+	free_irq(irq, dev_id);
+}
+
+static int workpad_ide_check_region(ide_ioreg_t from, unsigned int extent)
+{
+	return check_region(from, extent);
+}
+
+static void workpad_ide_request_region(ide_ioreg_t from, unsigned int extent,
+                                       const char *name)
+{
+	request_region(from, extent, name);
+}
+
+static void workpad_ide_release_region(ide_ioreg_t from, unsigned int extent)
+{
+	release_region(from, extent);
+}
+
+struct ide_ops workpad_ide_ops = {
+	&workpad_ide_default_irq,
+	&workpad_ide_default_io_base,
+	&workpad_ide_init_hwif_ports,
+	&workpad_ide_request_irq,
+	&workpad_ide_free_irq,
+	&workpad_ide_check_region,
+	&workpad_ide_request_region,
+	&workpad_ide_release_region
+};