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 <linux/dma-mapping.h> 14 15 static inline void fd_cacheflush(char * addr, long size) 16 { 17 dma_cache_sync(NULL, addr, size, DMA_BIDIRECTIONAL); 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 */ 57