blob: a62d0990c8ae8cfb526c1fd97b72282e62236579 [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
Ralf Baechle7ca16d22007-10-11 23:46:03 +010013#include <linux/dma-mapping.h>
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015static inline void fd_cacheflush(char * addr, long size)
16{
Ralf Baechle7ca16d22007-10-11 23:46:03 +010017 dma_cache_sync(NULL, addr, size, DMA_BIDIRECTIONAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070018}
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
27 * or whereever a particular machine has stored this ...
28 */
29#define FLOPPY0_TYPE fd_drive_type(0)
30#define FLOPPY1_TYPE fd_drive_type(1)
31
32#define FDC1 fd_getfdaddr1();
33
34#define N_FDC 1 /* do you *really* want a second controller? */
35#define N_DRIVE 8
36
37#define FLOPPY_MOTOR_MASK 0xf0
38
39/*
40 * The DMA channel used by the floppy controller cannot access data at
41 * addresses >= 16MB
42 *
43 * Went back to the 1MB limit, as some people had problems with the floppy
44 * driver otherwise. It doesn't matter much for performance anyway, as most
45 * floppy accesses go through the track buffer.
46 *
47 * On MIPSes using vdma, this actually means that *all* transfers go thru
48 * the * track buffer since 0x1000000 is always smaller than KSEG0/1.
49 * Actually this needs to be a bit more complicated since the so much different
50 * hardware available with MIPS CPUs ...
51 */
Ralf Baechle21a151d2007-10-11 23:46:15 +010052#define CROSS_64KB(a, s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64)
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54#define EXTRA_FLOPPY_PARAMS
55
56#include <floppy.h>
57
58#endif /* _ASM_FLOPPY_H */