[linux-block.git] / arch / mips / include / asm / floppy.h

/*
 * 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 */
Commit	Line	Data
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>
7ca16d26 RB	14
1da177e4 LT	15	static inline void fd_cacheflush(char * addr, long size)
1da177e4 LT	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
25985edc	27	* or wherever a particular machine has stored this ...
1da177e4 LT	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
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 */