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Annotation of Gnu-Mach/i386/i386at/gpl/linux/include/asm/floppy.h, revision 1.1.1.1

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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