blob: aa1ef8b352cc74baf2376c469e461a8fcfc13ddc [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
13static inline void fd_cacheflush(char * addr, long size)
14{
15 dma_cache_wback_inv((unsigned long)addr,size);
16}
17
18#define MAX_BUFFER_SECTORS 24
19
20
21/*
22 * And on Mips's the CMOS info fails also ...
23 *
24 * FIXME: This information should come from the ARC configuration tree
25 * or whereever a particular machine has stored this ...
26 */
27#define FLOPPY0_TYPE fd_drive_type(0)
28#define FLOPPY1_TYPE fd_drive_type(1)
29
30#define FDC1 fd_getfdaddr1();
31
32#define N_FDC 1 /* do you *really* want a second controller? */
33#define N_DRIVE 8
34
35#define FLOPPY_MOTOR_MASK 0xf0
36
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 */
50#define CROSS_64KB(a,s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64)
51
52#define EXTRA_FLOPPY_PARAMS
53
54#include <floppy.h>
55
56#endif /* _ASM_FLOPPY_H */