patch-2.1.126 linux/arch/mips/lib/floppy-std.c

• Lines: 168
• Date: Tue Oct 20 13:52:54 1998
• Orig file: v2.1.125/linux/arch/mips/lib/floppy-std.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.125/linux/arch/mips/lib/floppy-std.c linux/arch/mips/lib/floppy-std.c
@@ -0,0 +1,167 @@
+/* $Id: floppy-std.c,v 1.2 1998/05/28 03:17:57 ralf Exp $
+ *
+ * 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.
+ *
+ * Access the floppy hardware on PC style hardware
+ *
+ * Copyright (C) 1996, 1997, 1998 by Ralf Baechle
+ */
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/kbdcntrlr.h>
+#include <linux/kernel.h>
+#include <linux/linkage.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <asm/bootinfo.h>
+#include <asm/cachectl.h>
+#include <asm/dma.h>
+#include <asm/floppy.h>
+#include <asm/keyboard.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mc146818rtc.h>
+#include <asm/pgtable.h>
+
+/*
+ * How to access the FDC's registers.
+ */
+static unsigned char std_fd_inb(unsigned int port)
+{
+	return inb_p(port);
+}
+
+static void std_fd_outb(unsigned char value, unsigned int port)
+{
+	outb_p(value, port);
+}
+
+/*
+ * How to access the floppy DMA functions.
+ */
+static void std_fd_enable_dma(int channel)
+{
+	enable_dma(channel);
+}
+
+static void std_fd_disable_dma(int channel)
+{
+	disable_dma(channel);
+}
+
+static int std_fd_request_dma(int channel)
+{
+	return request_dma(channel, "floppy");
+}
+
+static void std_fd_free_dma(int channel)
+{
+	free_dma(channel);
+}
+
+static void std_fd_clear_dma_ff(int channel)
+{
+	clear_dma_ff(channel);
+}
+
+static void std_fd_set_dma_mode(int channel, char mode)
+{
+	set_dma_mode(channel, mode);
+}
+
+static void std_fd_set_dma_addr(int channel, unsigned int addr)
+{
+	set_dma_addr(channel, addr);
+}
+
+static void std_fd_set_dma_count(int channel, unsigned int count)
+{
+	set_dma_count(channel, count);
+}
+
+static int std_fd_get_dma_residue(int channel)
+{
+	return get_dma_residue(channel);
+}
+
+static void std_fd_enable_irq(int irq)
+{
+	enable_irq(irq);
+}
+
+static void std_fd_disable_irq(int irq)
+{
+	disable_irq(irq);
+}
+
+static unsigned long std_fd_getfdaddr1(void)
+{
+	return 0x3f0;
+}
+
+/* Pure 2^n version of get_order */
+static int __get_order(unsigned long size)
+{
+	int order;
+
+	size = (size-1) >> (PAGE_SHIFT-1);
+	order = -1;
+	do {
+		size >>= 1;
+		order++;
+	} while (size);
+	return order;
+}
+
+static unsigned long std_fd_dma_mem_alloc(unsigned long size)
+{
+	int order = __get_order(size);
+	unsigned long mem;
+
+	mem = __get_dma_pages(GFP_KERNEL,order);
+
+	return mem;
+}
+
+static void std_fd_dma_mem_free(unsigned long addr, unsigned long size)
+{       
+	free_pages(addr, __get_order(size));	
+}
+
+static unsigned long std_fd_drive_type(unsigned long n)
+{
+	if (n == 0)
+		return 4;	/* 3,5", 1.44mb */
+
+	return 0;
+}
+
+struct fd_ops std_fd_ops = {
+	/*
+	 * How to access the floppy controller's ports
+	 */
+	std_fd_inb,
+	std_fd_outb,
+	/*
+	 * How to access the floppy DMA functions.
+	 */
+	std_fd_enable_dma,
+	std_fd_disable_dma,
+	std_fd_request_dma,
+	std_fd_free_dma,
+	std_fd_clear_dma_ff,
+	std_fd_set_dma_mode,
+	std_fd_set_dma_addr,
+	std_fd_set_dma_count,
+	std_fd_get_dma_residue,
+	std_fd_enable_irq,
+	std_fd_disable_irq,
+        std_fd_getfdaddr1,
+        std_fd_dma_mem_alloc,
+        std_fd_dma_mem_free,
+	std_fd_drive_type
+};