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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 */
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