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/* * 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 */ #ifndef __ASM_I386_FLOPPY_H #define __ASM_I386_FLOPPY_H #define fd_inb(port) inb_p(port) #define fd_outb(port,value) outb_p(port,value) #define fd_enable_dma() enable_dma(FLOPPY_DMA) #define fd_disable_dma() disable_dma(FLOPPY_DMA) #define fd_request_dma() request_dma(FLOPPY_DMA,"floppy") #define fd_free_dma() free_dma(FLOPPY_DMA) #define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA) #define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA,mode) #define fd_set_dma_addr(addr) set_dma_addr(FLOPPY_DMA,addr) #define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA,count) #define fd_enable_irq() enable_irq(FLOPPY_IRQ) #define fd_disable_irq() disable_irq(FLOPPY_IRQ) #define fd_cacheflush(addr,size) /* nothing */ #define fd_request_irq() request_irq(FLOPPY_IRQ, floppy_interrupt, \ SA_INTERRUPT|SA_SAMPLE_RANDOM, \ "floppy") #define fd_free_irq() free_irq(FLOPPY_IRQ); __inline__ void virtual_dma_init(void) { /* Nothing to do on an i386 */ } static int FDC1 = 0x3f0; static int FDC2 = -1; #define FLOPPY0_TYPE ((CMOS_READ(0x10) >> 4) & 15) #define FLOPPY1_TYPE (CMOS_READ(0x10) & 15) #define N_FDC 2 #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. */ #define CROSS_64KB(a,s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64) #endif /* __ASM_I386_FLOPPY_H */ |