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  */
  29 static inline unsigned char fd_inb(unsigned int port)
  30 {
  31         return inb_p(port);
  32 }
  33
  34 static 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  */
  42 static inline void fd_enable_dma(void)
  43 {
  44         enable_dma(FLOPPY_DMA);
  45 }
  46
  47 static inline void fd_disable_dma(void)
  48 {
  49         disable_dma(FLOPPY_DMA);
  50 }
  51
  52 static inline int fd_request_dma(void)
  53 {
  54         return request_dma(FLOPPY_DMA, "floppy");
  55 }
  56
  57 static inline void fd_free_dma(void)
  58 {
  59         free_dma(FLOPPY_DMA);
  60 }
  61
  62 static inline void fd_clear_dma_ff(void)
  63 {
  64         clear_dma_ff(FLOPPY_DMA);
  65 }
  66
  67 static inline void fd_set_dma_mode(char mode)
  68 {
  69         set_dma_mode(FLOPPY_DMA, mode);
  70 }
  71
  72 static inline void fd_set_dma_addr(char *addr)
  73 {
  74         set_dma_addr(FLOPPY_DMA, (unsigned long) addr);
  75 }
  76
  77 static inline void fd_set_dma_count(unsigned int count)
  78 {
  79         set_dma_count(FLOPPY_DMA, count);
  80 }
  81
  82 static inline int fd_get_dma_residue(void)
  83 {
  84         return get_dma_residue(FLOPPY_DMA);
  85 }
  86
  87 static inline void fd_enable_irq(void)
  88 {
  89         enable_irq(FLOPPY_IRQ);
  90 }
  91
  92 static inline void fd_disable_irq(void)
  93 {
  94         disable_irq(FLOPPY_IRQ);
  95 }
  96
  97 static inline int fd_request_irq(void)
  98 {
  99         return request_irq(FLOPPY_IRQ, floppy_interrupt,
 100                            0, "floppy", NULL);
 101 }
 102
 103 static 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
 111 static inline unsigned long fd_getfdaddr1(void)
 112 {
 113         return 0x3f0;
 114 }
 115
 116 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
 117 {
 118         unsigned long mem;
 119
 120         mem = __get_dma_pages(GFP_KERNEL, get_order(size));
 121
 122         return mem;
 123 }
 124
 125 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
 126 {
 127         free_pages(addr, get_order(size));
 128 }
 129
 130 static inline unsigned long fd_drive_type(unsigned long n)
 131 {
 132         if (n == 0)
 133                 return 4;       /* 3,5", 1.44mb */
 134
 135         return 0;
 136 }
 137
 138 #endif /* __ASM_MACH_GENERIC_FLOPPY_H */