patch-1.3.36 linux/include/asm-mips/floppy.h

• Lines: 90
• Date: Fri Oct 20 14:36:33 1995
• Orig file: v1.3.35/linux/include/asm-mips/floppy.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.35/linux/include/asm-mips/floppy.h linux/include/asm-mips/floppy.h
@@ -0,0 +1,89 @@
+/*
+ * Architecture specific parts of the Floppy driver
+ *
+ * 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.
+ *
+ * Copyright (C) 1995
+ */
+#ifndef __ASM_MIPS_FLOPPY_H
+#define __ASM_MIPS_FLOPPY_H
+
+#include <linux/config.h>
+
+#include <asm/bootinfo.h>
+#include <asm/jazz.h>
+#include <asm/jazzdma.h>
+#include <asm/mipsconfig.h>
+#include <asm/vector.h>
+
+#define fd_inb(port)			feature->fd_inb(port)
+#define fd_outb(port,value)		feature->fd_outb(port,value)
+
+#define fd_enable_dma()			feature->fd_enable_dma()
+#define fd_disable_dma()		feature->fd_disable_dma()
+#define fd_request_dma()		feature->fd_request_dma()
+#define fd_free_dma()			feature->fd_free_dma()
+#define fd_clear_dma_ff()		feature->fd_clear_dma_ff()
+#define fd_set_dma_mode(mode)		feature->fd_set_dma_mode(mode)
+#define fd_set_dma_addr(addr)		feature->fd_set_dma_addr(addr)
+#define fd_set_dma_count(count)		feature->fd_set_dma_count(count)
+#define fd_get_dma_residue()		feature->fd_get_dma_residue()
+#define fd_enable_irq()			feature->fd_enable_irq()
+#define fd_disable_irq()		feature->fd_disable_irq()
+#define fd_cacheflush(addr, size)	feature->fd_cacheflush((void *)addr, size)
+#define fd_request_irq()        request_irq(FLOPPY_IRQ, floppy_interrupt, \
+					    SA_INTERRUPT|SA_SAMPLE_RANDOM, \
+				            "floppy")
+#define fd_free_irq()           free_irq(FLOPPY_IRQ);
+
+#define virtual_dma_init()                                              \
+        if (boot_info.machtype == MACH_ACER_PICA_61 ||                  \
+            boot_info.machtype == MACH_MIPS_MAGNUM_4000 ||              \
+            boot_info.machtype == MACH_OLIVETTI_M700)                   \
+		vdma_alloc(PHYSADDR(floppy_track_buffer),               \
+			   512*2*MAX_BUFFER_SECTORS);
+
+/*
+ * And on Mips's the CMOS info failes also ...
+ *
+ * FIXME: This information should come from the ARC configuration tree
+ *        or whereever a parivular machine has stored this ...
+ */
+#define FLOPPY0_TYPE 4		/* this is wrong for the Olli M700, but who cares... */
+#define FLOPPY1_TYPE 0
+
+#ifdef MODULE
+#define FDC1			((boot_info.machtype == MACH_ACER_PICA_61 || \
+				boot_info.machtype == MACH_MIPS_MAGNUM_4000 || \
+				boot_info.machtype == MACH_OLIVETTI_M700) ? \
+				0xe0003000 : 0x3f0)
+int FDC2=-1;
+#else
+#define FDC1			((boot_info.machtype == MACH_ACER_PICA_61 || \
+				boot_info.machtype == MACH_MIPS_MAGNUM_4000 || \
+				boot_info.machtype == MACH_OLIVETTI_M700) ? \
+				0xe0003000 : 0x3f0)
+static int FDC2=-1;
+#endif /* MODULE */
+
+#define N_FDC 1			/* do you *really* want a second controller? */
+#define N_DRIVE 8
+
+/*
+ * The DMA channel used by the floppy controller cannot access data at
+ * addresses >= 16MB
+ *
+ * Went back to the 1MB limit, as some people had problems with the floppy
+ * driver otherwise. It doesn't matter much for performance anyway, as most
+ * floppy accesses go through the track buffer.
+ *
+ * On MIPSes using vdma, this actually means that *all* transfers go thru
+ * the * track buffer since 0x1000000 is always smaller than KSEG0/1.
+ * Actually this needs to be a bit more complicated since the so much different
+ * hardware available with MIPS CPUs ...
+ */
+#define CROSS_64KB(a,s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64)
+
+#endif /* __ASM_MIPS_FLOPPY_H */