init android origin source code

1 files changed, 56 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/arch/mips/include/asm/floppy.h b/ANDROID_3.4.5/arch/mips/include/asm/floppy.h
new file mode 100644
index 00000000..4456c9c4
--- /dev/null
+++ b/ANDROID_3.4.5/arch/mips/include/asm/floppy.h
@@ -0,0 +1,56 @@
+/*
+ * 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 - 2000 Ralf Baechle
+ */
+#ifndef _ASM_FLOPPY_H
+#define _ASM_FLOPPY_H
+
+#include <linux/dma-mapping.h>
+
+static inline void fd_cacheflush(char * addr, long size)
+{
+	dma_cache_sync(NULL, addr, size, DMA_BIDIRECTIONAL);
+}
+
+#define MAX_BUFFER_SECTORS 24
+
+
+/*
+ * And on Mips's the CMOS info fails also ...
+ *
+ * FIXME: This information should come from the ARC configuration tree
+ *        or wherever a particular machine has stored this ...
+ */
+#define FLOPPY0_TYPE 		fd_drive_type(0)
+#define FLOPPY1_TYPE		fd_drive_type(1)
+
+#define FDC1			fd_getfdaddr1()
+
+#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)
+
+#define EXTRA_FLOPPY_PARAMS
+
+#include <floppy.h>
+
+#endif /* _ASM_FLOPPY_H */