mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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140 lines
2.5 KiB
C
140 lines
2.5 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1996, 1997, 1998, 2003 by Ralf Baechle
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*/
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#ifndef __ASM_MACH_GENERIC_FLOPPY_H
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#define __ASM_MACH_GENERIC_FLOPPY_H
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/sched.h>
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#include <linux/linkage.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <asm/bootinfo.h>
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#include <asm/cachectl.h>
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#include <asm/dma.h>
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#include <asm/floppy.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/pgtable.h>
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/*
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* How to access the FDC's registers.
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*/
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static inline unsigned char fd_inb(unsigned int port)
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{
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return inb_p(port);
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}
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static inline void fd_outb(unsigned char value, unsigned int port)
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{
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outb_p(value, port);
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}
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/*
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* How to access the floppy DMA functions.
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*/
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static inline void fd_enable_dma(void)
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{
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enable_dma(FLOPPY_DMA);
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}
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static inline void fd_disable_dma(void)
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{
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disable_dma(FLOPPY_DMA);
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}
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static inline int fd_request_dma(void)
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{
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return request_dma(FLOPPY_DMA, "floppy");
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}
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static inline void fd_free_dma(void)
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{
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free_dma(FLOPPY_DMA);
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}
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static inline void fd_clear_dma_ff(void)
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{
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clear_dma_ff(FLOPPY_DMA);
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}
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static inline void fd_set_dma_mode(char mode)
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{
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set_dma_mode(FLOPPY_DMA, mode);
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}
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static inline void fd_set_dma_addr(char *addr)
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{
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set_dma_addr(FLOPPY_DMA, (unsigned long) addr);
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}
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static inline void fd_set_dma_count(unsigned int count)
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{
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set_dma_count(FLOPPY_DMA, count);
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}
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static inline int fd_get_dma_residue(void)
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{
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return get_dma_residue(FLOPPY_DMA);
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}
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static inline void fd_enable_irq(void)
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{
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enable_irq(FLOPPY_IRQ);
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}
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static inline void fd_disable_irq(void)
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{
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disable_irq(FLOPPY_IRQ);
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}
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static inline int fd_request_irq(void)
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{
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return request_irq(FLOPPY_IRQ, floppy_interrupt,
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IRQF_DISABLED, "floppy", NULL);
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}
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static inline void fd_free_irq(void)
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{
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free_irq(FLOPPY_IRQ, NULL);
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}
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#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL);
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static inline unsigned long fd_getfdaddr1(void)
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{
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return 0x3f0;
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}
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static inline unsigned long fd_dma_mem_alloc(unsigned long size)
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{
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unsigned long mem;
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mem = __get_dma_pages(GFP_KERNEL, get_order(size));
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return mem;
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}
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static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
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{
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free_pages(addr, get_order(size));
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}
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static inline unsigned long fd_drive_type(unsigned long n)
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{
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if (n == 0)
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return 4; /* 3,5", 1.44mb */
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return 0;
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}
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#endif /* __ASM_MACH_GENERIC_FLOPPY_H */
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