mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-08 18:43:21 +01:00
Christoph Hellwig
1dd71588c2
The floppy drivers doesn't otherwise use the DMA API, so indirecting through it just for cache flushing in MIPS-specific code just call dma_cache_wback_inv directly. Signed-off-by: Christoph Hellwig <[email protected]> Cc: [email protected] Cc: Marek Szyprowski <[email protected]> Cc: Robin Murphy <[email protected]> Cc: Michal Simek <[email protected]> Cc: David Howells <[email protected]> Cc: Guan Xuetao <[email protected]> Cc: Chris Zankel <[email protected]> Cc: Max Filippov <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Patchwork: https://patchwork.linux-mips.org/patch/17183/ Signed-off-by: Ralf Baechle <[email protected]>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
|
|
* 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 <asm/io.h>
|
|
|
|
static inline void fd_cacheflush(char * addr, long size)
|
|
{
|
|
dma_cache_wback_inv((unsigned long)addr, size);
|
|
}
|
|
|
|
#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 */
|