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
  25 /*
  26  * How to access the FDC's registers.
  27  */
  28 static inline unsigned char fd_inb(unsigned int base, unsigned int reg)
  29 {
  30         return inb_p(base + reg);
  31 }
  32
  33 static inline void fd_outb(unsigned char value, unsigned int base, unsigned int reg)
  34 {
  35         outb_p(value, base + reg);
  36 }
  37
  38 /*
  39  * How to access the floppy DMA functions.
  40  */
  41 static inline void fd_enable_dma(void)
  42 {
  43         enable_dma(FLOPPY_DMA);
  44 }
  45
  46 static inline void fd_disable_dma(void)
  47 {
  48         disable_dma(FLOPPY_DMA);
  49 }
  50
  51 static inline int fd_request_dma(void)
  52 {
  53         return request_dma(FLOPPY_DMA, "floppy");
  54 }
  55
  56 static inline void fd_free_dma(void)
  57 {
  58         free_dma(FLOPPY_DMA);
  59 }
  60
  61 static inline void fd_clear_dma_ff(void)
  62 {
  63         clear_dma_ff(FLOPPY_DMA);
  64 }
  65
  66 static inline void fd_set_dma_mode(char mode)
  67 {
  68         set_dma_mode(FLOPPY_DMA, mode);
  69 }
  70
  71 static inline void fd_set_dma_addr(char *addr)
  72 {
  73         set_dma_addr(FLOPPY_DMA, (unsigned long) addr);
  74 }
  75
  76 static inline void fd_set_dma_count(unsigned int count)
  77 {
  78         set_dma_count(FLOPPY_DMA, count);
  79 }
  80
  81 static inline int fd_get_dma_residue(void)
  82 {
  83         return get_dma_residue(FLOPPY_DMA);
  84 }
  85
  86 static inline void fd_enable_irq(void)
  87 {
  88         enable_irq(FLOPPY_IRQ);
  89 }
  90
  91 static inline void fd_disable_irq(void)
  92 {
  93         disable_irq(FLOPPY_IRQ);
  94 }
  95
  96 static inline int fd_request_irq(void)
  97 {
  98         return request_irq(FLOPPY_IRQ, floppy_interrupt,
  99                            0, "floppy", NULL);
 100 }
 101
 102 static inline void fd_free_irq(void)
 103 {
 104         free_irq(FLOPPY_IRQ, NULL);
 105 }
 106
 107 #define fd_free_irq()           free_irq(FLOPPY_IRQ, NULL);
 108
 109
 110 static inline unsigned long fd_getfdaddr1(void)
 111 {
 112         return 0x3f0;
 113 }
 114
 115 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
 116 {
 117         return __get_dma_pages(GFP_KERNEL, get_order(size));
 118 }
 119
 120 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
 121 {
 122         free_pages(addr, get_order(size));
 123 }
 124
 125 static inline unsigned long fd_drive_type(unsigned long n)
 126 {
 127         if (n == 0)
 128                 return 4;       /* 3,5", 1.44mb */
 129
 130         return 0;
 131 }
 132
 133 #endif /* __ASM_MACH_GENERIC_FLOPPY_H */