From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/mips/include/asm/floppy.h | 56 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 arch/mips/include/asm/floppy.h (limited to 'arch/mips/include/asm/floppy.h') diff --git a/arch/mips/include/asm/floppy.h b/arch/mips/include/asm/floppy.h new file mode 100644 index 000000000..d75aed364 --- /dev/null +++ b/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 + +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 + +#endif /* _ASM_FLOPPY_H */ -- cgit v1.2.3-54-g00ecf