floppy.h (1609B)
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 13#include <asm/io.h> 14 15static inline void fd_cacheflush(char * addr, long size) 16{ 17 dma_cache_wback_inv((unsigned long)addr, size); 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 27 * or wherever 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/* 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 */