patch-2.1.80 linux/include/asm-arm/floppy.h

• Lines: 114
• Date: Tue Jan 20 16:39:42 1998
• Orig file: v2.1.79/linux/include/asm-arm/floppy.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.79/linux/include/asm-arm/floppy.h linux/include/asm-arm/floppy.h
@@ -0,0 +1,113 @@
+/*
+ * linux/include/asm-arm/floppy.h
+ *
+ * (C) 1996 Russell King
+ */
+#ifndef __ASM_ARM_FLOPPY_H
+#define __ASM_ARM_FLOPPY_H
+#if 0
+#include <asm/arch/floppy.h>
+#endif
+
+#define fd_outb(val,port)	outb((val),(port))
+#define fd_inb(port)		inb((port))
+#define fd_request_irq()	request_irq(IRQ_FLOPPYDISK,floppy_interrupt,\
+					SA_INTERRUPT|SA_SAMPLE_RANDOM,"floppy",NULL)
+#define fd_free_irq()		free_irq(IRQ_FLOPPYDISK,NULL)
+#define fd_disable_irq()	disable_irq(IRQ_FLOPPYDISK)
+#define fd_enable_irq()		enable_irq(IRQ_FLOPPYDISK)
+
+#define fd_request_dma()	request_dma(FLOPPY_DMA,"floppy")
+#define fd_free_dma()		free_dma(FLOPPY_DMA)
+#define fd_disable_dma()	disable_dma(FLOPPY_DMA)
+#define fd_enable_dma()		enable_dma(FLOPPY_DMA)
+#define fd_clear_dma_ff()	clear_dma_ff(FLOPPY_DMA)
+#define fd_set_dma_mode(mode)	set_dma_mode(FLOPPY_DMA, (mode))
+#define fd_set_dma_addr(addr)	set_dma_addr(FLOPPY_DMA, virt_to_bus((addr)))
+#define fd_set_dma_count(len)	set_dma_count(FLOPPY_DMA, (len))
+#define fd_cacheflush(addr,sz)
+
+/* Floppy_selects is the list of DOR's to select drive fd
+ *
+ * On initialisation, the floppy list is scanned, and the drives allocated
+ * in the order that they are found.  This is done by seeking the drive
+ * to a non-zero track, and then restoring it to track 0.  If an error occurs,
+ * then there is no floppy drive present.       [to be put back in again]
+ */
+static unsigned char floppy_selects[2][4] =
+{
+	{ 0x10, 0x21, 0x23, 0x33 },
+	{ 0x10, 0x21, 0x23, 0x33 }
+};
+
+#define fd_setdor(dor)										\
+do {												\
+	int new_dor = (dor);									\
+	if (new_dor & 0xf0)									\
+		fd_outb((new_dor & 0x0c) | floppy_selects[fdc][new_dor & 3], FD_DOR);		\
+	else											\
+		fd_outb((new_dor & 0x0c), FD_DOR);						\
+} while (0)
+
+/*
+ * Someday, we'll automatically detect which drives are present...
+ */
+extern __inline__ void fd_scandrives (void)
+{
+#if 0
+	int floppy, drive_count;
+
+	fd_disable_irq();
+	raw_cmd = &default_raw_cmd;
+	raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_SEEK;
+	raw_cmd->track = 0;
+	raw_cmd->rate = ?;
+	drive_count = 0;
+	for (floppy = 0; floppy < 4; floppy ++) {
+		current_drive = drive_count;
+		/*
+		 * Turn on floppy motor
+		 */
+		if (start_motor(redo_fd_request))
+			continue;
+		/*
+		 * Set up FDC
+		 */
+		fdc_specify();
+		/*
+		 * Tell FDC to recalibrate
+		 */
+		output_byte(FD_RECALIBRATE);
+		LAST_OUT(UNIT(floppy));
+		/* wait for command to complete */
+		if (!successful) {
+			int i;
+			for (i = drive_count; i < 3; i--)
+				floppy_selects[fdc][i] = floppy_selects[fdc][i + 1];
+			floppy_selects[fdc][3] = 0;
+			floppy -= 1;
+		} else
+			drive_count++;
+	}
+#else
+	floppy_selects[0][0] = 0x10;
+	floppy_selects[0][1] = 0x21;
+	floppy_selects[0][2] = 0x23;
+	floppy_selects[0][3] = 0x33;
+#endif
+}
+
+#define FDC1 (0x3f0)
+static int FDC2 = -1;
+
+#define FLOPPY0_TYPE 4
+#define FLOPPY1_TYPE 4
+
+#define N_FDC 1
+#define N_DRIVE 8
+
+#define FLOPPY_MOTOR_MASK 0xf0
+
+#define CROSS_64KB(a,s) (0)
+	
+#endif