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Annotation of Gnu-Mach/i386/i386at/gpl/linux/include/asm/floppy.h, revision 1.1

1.1     ! root        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
        !             9:  */
        !            10: #ifndef __ASM_I386_FLOPPY_H
        !            11: #define __ASM_I386_FLOPPY_H
        !            12: 
        !            13: #define fd_inb(port)                   inb_p(port)
        !            14: #define fd_outb(port,value)            outb_p(port,value)
        !            15: 
        !            16: #define fd_enable_dma()         enable_dma(FLOPPY_DMA)
        !            17: #define fd_disable_dma()        disable_dma(FLOPPY_DMA)
        !            18: #define fd_request_dma()        request_dma(FLOPPY_DMA,"floppy")
        !            19: #define fd_free_dma()           free_dma(FLOPPY_DMA)
        !            20: #define fd_clear_dma_ff()       clear_dma_ff(FLOPPY_DMA)
        !            21: #define fd_set_dma_mode(mode)   set_dma_mode(FLOPPY_DMA,mode)
        !            22: #define fd_set_dma_addr(addr)   set_dma_addr(FLOPPY_DMA,addr)
        !            23: #define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA,count)
        !            24: #define fd_enable_irq()         enable_irq(FLOPPY_IRQ)
        !            25: #define fd_disable_irq()        disable_irq(FLOPPY_IRQ)
        !            26: #define fd_cacheflush(addr,size) /* nothing */
        !            27: #define fd_request_irq()        request_irq(FLOPPY_IRQ, floppy_interrupt, \
        !            28:                                            SA_INTERRUPT|SA_SAMPLE_RANDOM, \
        !            29:                                            "floppy")
        !            30: #define fd_free_irq()           free_irq(FLOPPY_IRQ);
        !            31: 
        !            32: __inline__ void virtual_dma_init(void)
        !            33: {
        !            34:        /* Nothing to do on an i386 */
        !            35: }
        !            36: 
        !            37: static int FDC1 = 0x3f0;
        !            38: static int FDC2 = -1;
        !            39: 
        !            40: #define FLOPPY0_TYPE   ((CMOS_READ(0x10) >> 4) & 15)
        !            41: #define FLOPPY1_TYPE   (CMOS_READ(0x10) & 15)
        !            42: 
        !            43: #define N_FDC 2
        !            44: #define N_DRIVE 8
        !            45: 
        !            46: /*
        !            47:  * The DMA channel used by the floppy controller cannot access data at
        !            48:  * addresses >= 16MB
        !            49:  *
        !            50:  * Went back to the 1MB limit, as some people had problems with the floppy
        !            51:  * driver otherwise. It doesn't matter much for performance anyway, as most
        !            52:  * floppy accesses go through the track buffer.
        !            53:  */
        !            54: #define CROSS_64KB(a,s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64)
        !            55: 
        !            56: #endif /* __ASM_I386_FLOPPY_H */

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