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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - arch/mips/include/asm/floppy.h
2 * Architecture specific parts of the Floppy driver
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
8 * Copyright (C) 1995 - 2000 Ralf Baechle
13 #include <linux/dma-mapping.h>
15 static inline void fd_cacheflush(char * addr
, long size
)
17 dma_cache_sync(NULL
, addr
, size
, DMA_BIDIRECTIONAL
);
20 #define MAX_BUFFER_SECTORS 24
24 * And on Mips's the CMOS info fails also ...
26 * FIXME: This information should come from the ARC configuration tree
27 * or wherever a particular machine has stored this ...
29 #define FLOPPY0_TYPE fd_drive_type(0)
30 #define FLOPPY1_TYPE fd_drive_type(1)
32 #define FDC1 fd_getfdaddr1();
34 #define N_FDC 1 /* do you *really* want a second controller? */
38 * The DMA channel used by the floppy controller cannot access data at
41 * Went back to the 1MB limit, as some people had problems with the floppy
42 * driver otherwise. It doesn't matter much for performance anyway, as most
43 * floppy accesses go through the track buffer.
45 * On MIPSes using vdma, this actually means that *all* transfers go thru
46 * the * track buffer since 0x1000000 is always smaller than KSEG0/1.
47 * Actually this needs to be a bit more complicated since the so much different
48 * hardware available with MIPS CPUs ...
50 #define CROSS_64KB(a, s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64)
52 #define EXTRA_FLOPPY_PARAMS
56 #endif /* _ASM_FLOPPY_H */