LXR linux/arch/mips/include/asm/mach-generic/floppy.h

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 1996, 1997, 1998, 2003 by Ralf Baechle
   7 */
   8#ifndef __ASM_MACH_GENERIC_FLOPPY_H
   9#define __ASM_MACH_GENERIC_FLOPPY_H
  10
  11#include <linux/delay.h>
  12#include <linux/ioport.h>
  13#include <linux/sched.h>
  14#include <linux/linkage.h>
  15#include <linux/types.h>
  16#include <linux/mm.h>
  17
  18#include <asm/bootinfo.h>
  19#include <asm/cachectl.h>
  20#include <asm/dma.h>
  21#include <asm/floppy.h>
  22#include <asm/io.h>
  23#include <asm/irq.h>
  24#include <asm/pgtable.h>
  25
  26/*
  27 * How to access the FDC's registers.
  28 */
  29static inline unsigned char fd_inb(unsigned int port)
  30{
  31        return inb_p(port);
  32}
  33
  34static inline void fd_outb(unsigned char value, unsigned int port)
  35{
  36        outb_p(value, port);
  37}
  38
  39/*
  40 * How to access the floppy DMA functions.
  41 */
  42static inline void fd_enable_dma(void)
  43{
  44        enable_dma(FLOPPY_DMA);
  45}
  46
  47static inline void fd_disable_dma(void)
  48{
  49        disable_dma(FLOPPY_DMA);
  50}
  51
  52static inline int fd_request_dma(void)
  53{
  54        return request_dma(FLOPPY_DMA, "floppy");
  55}
  56
  57static inline void fd_free_dma(void)
  58{
  59        free_dma(FLOPPY_DMA);
  60}
  61
  62static inline void fd_clear_dma_ff(void)
  63{
  64        clear_dma_ff(FLOPPY_DMA);
  65}
  66
  67static inline void fd_set_dma_mode(char mode)
  68{
  69        set_dma_mode(FLOPPY_DMA, mode);
  70}
  71
  72static inline void fd_set_dma_addr(char *addr)
  73{
  74        set_dma_addr(FLOPPY_DMA, (unsigned long) addr);
  75}
  76
  77static inline void fd_set_dma_count(unsigned int count)
  78{
  79        set_dma_count(FLOPPY_DMA, count);
  80}
  81
  82static inline int fd_get_dma_residue(void)
  83{
  84        return get_dma_residue(FLOPPY_DMA);
  85}
  86
  87static inline void fd_enable_irq(void)
  88{
  89        enable_irq(FLOPPY_IRQ);
  90}
  91
  92static inline void fd_disable_irq(void)
  93{
  94        disable_irq(FLOPPY_IRQ);
  95}
  96
  97static inline int fd_request_irq(void)
  98{
  99        return request_irq(FLOPPY_IRQ, floppy_interrupt,
 100                           0, "floppy", NULL);
 101}
 102
 103static inline void fd_free_irq(void)
 104{
 105        free_irq(FLOPPY_IRQ, NULL);
 106}
 107
 108#define fd_free_irq()           free_irq(FLOPPY_IRQ, NULL);
 109
 110
 111static inline unsigned long fd_getfdaddr1(void)
 112{
 113        return 0x3f0;
 114}
 115
 116static inline unsigned long fd_dma_mem_alloc(unsigned long size)
 117{
 118        return __get_dma_pages(GFP_KERNEL, get_order(size));
 119}
 120
 121static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
 122{
 123        free_pages(addr, get_order(size));
 124}
 125
 126static inline unsigned long fd_drive_type(unsigned long n)
 127{
 128        if (n == 0)
 129                return 4;       /* 3,5", 1.44mb */
 130
 131        return 0;
 132}
 133
 134#endif /* __ASM_MACH_GENERIC_FLOPPY_H */
 135