1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
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 */
|
