1633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham/* 2633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * Architecture specific parts of the Floppy driver 3633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * 4633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * This file is subject to the terms and conditions of the GNU General Public 5633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * License. See the file "COPYING" in the main directory of this archive 6633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * for more details. 7633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * 8633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * Copyright (C) 1995 - 2000 Ralf Baechle 9633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham */ 10633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#ifndef _ASM_FLOPPY_H 11633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define _ASM_FLOPPY_H 12633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 13633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#include <linux/dma-mapping.h> 14633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 15633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandhamstatic inline void fd_cacheflush(char * addr, long size) 16633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham{ 17633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham dma_cache_sync(NULL, addr, size, DMA_BIDIRECTIONAL); 18633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham} 19633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 20633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define MAX_BUFFER_SECTORS 24 21633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 22633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 23633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham/* 24633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * And on Mips's the CMOS info fails also ... 25633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * 26633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * FIXME: This information should come from the ARC configuration tree 27633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * or whereever a particular machine has stored this ... 28633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham */ 29633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define FLOPPY0_TYPE fd_drive_type(0) 30633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define FLOPPY1_TYPE fd_drive_type(1) 31633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 32633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define FDC1 fd_getfdaddr1(); 33633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 34633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define N_FDC 1 /* do you *really* want a second controller? */ 35633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define N_DRIVE 8 36633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 37633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham/* 38633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * The DMA channel used by the floppy controller cannot access data at 39633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * addresses >= 16MB 40633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * 41633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * Went back to the 1MB limit, as some people had problems with the floppy 42633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * driver otherwise. It doesn't matter much for performance anyway, as most 43633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * floppy accesses go through the track buffer. 44633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * 45633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * On MIPSes using vdma, this actually means that *all* transfers go thru 46633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * the * track buffer since 0x1000000 is always smaller than KSEG0/1. 47633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * Actually this needs to be a bit more complicated since the so much different 48633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham * hardware available with MIPS CPUs ... 49633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham */ 50633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define CROSS_64KB(a, s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64) 51633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 52633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#define EXTRA_FLOPPY_PARAMS 53633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 54633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#include <floppy.h> 55633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham 56633c3473533ad9f2cca069b22cc5d95cd4e3510bRaghu Gandham#endif /* _ASM_FLOPPY_H */ 57