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1da177e4 LT |
1 | /* |
2 | * Architecture specific parts of the Floppy driver | |
3 | * | |
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 | |
6 | * for more details. | |
7 | * | |
8 | * Copyright (C) 1995 - 2000 Ralf Baechle | |
9 | */ | |
10 | #ifndef _ASM_FLOPPY_H | |
11 | #define _ASM_FLOPPY_H | |
12 | ||
7ca16d26 RB |
13 | #include <linux/dma-mapping.h> |
14 | ||
1da177e4 LT |
15 | static inline void fd_cacheflush(char * addr, long size) |
16 | { | |
7ca16d26 | 17 | dma_cache_sync(NULL, addr, size, DMA_BIDIRECTIONAL); |
1da177e4 LT |
18 | } |
19 | ||
20 | #define MAX_BUFFER_SECTORS 24 | |
21 | ||
22 | ||
23 | /* | |
24 | * And on Mips's the CMOS info fails also ... | |
25 | * | |
26 | * FIXME: This information should come from the ARC configuration tree | |
70342287 | 27 | * or wherever a particular machine has stored this ... |
1da177e4 | 28 | */ |
70342287 | 29 | #define FLOPPY0_TYPE fd_drive_type(0) |
1da177e4 LT |
30 | #define FLOPPY1_TYPE fd_drive_type(1) |
31 | ||
497888cf | 32 | #define FDC1 fd_getfdaddr1() |
1da177e4 LT |
33 | |
34 | #define N_FDC 1 /* do you *really* want a second controller? */ | |
35 | #define N_DRIVE 8 | |
36 | ||
1da177e4 LT |
37 | /* |
38 | * The DMA channel used by the floppy controller cannot access data at | |
39 | * addresses >= 16MB | |
40 | * | |
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. | |
44 | * | |
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 ... | |
49 | */ | |
21a151d8 | 50 | #define CROSS_64KB(a, s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64) |
1da177e4 LT |
51 | |
52 | #define EXTRA_FLOPPY_PARAMS | |
53 | ||
54 | #include <floppy.h> | |
55 | ||
56 | #endif /* _ASM_FLOPPY_H */ |