release/src-rt-6.x.4708/linux/linux-2.6.36/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/init.h>
  13 #include <linux/ioport.h>
  14 #include <linux/sched.h>
  15 #include <linux/linkage.h>
  16 #include <linux/types.h>
  17 #include <linux/mm.h>
  18
  19 #include <asm/bootinfo.h>
  20 #include <asm/cachectl.h>
  21 #include <asm/dma.h>
  22 #include <asm/floppy.h>
  23 #include <asm/io.h>
  24 #include <asm/irq.h>
  25 #include <asm/pgtable.h>
  26
  27 /*
  28  * How to access the FDC's registers.
  29  */
  30 static inline unsigned char fd_inb(unsigned int port)
  31 {
  32         return inb_p(port);
  33 }
  34
  35 static inline void fd_outb(unsigned char value, unsigned int port)
  36 {
  37         outb_p(value, port);
  38 }
  39
  40 /*
  41  * How to access the floppy DMA functions.
  42  */
  43 static inline void fd_enable_dma(void)
  44 {
  45         enable_dma(FLOPPY_DMA);
  46 }
  47
  48 static inline void fd_disable_dma(void)
  49 {
  50         disable_dma(FLOPPY_DMA);
  51 }
  52
  53 static inline int fd_request_dma(void)
  54 {
  55         return request_dma(FLOPPY_DMA, "floppy");
  56 }
  57
  58 static inline void fd_free_dma(void)
  59 {
  60         free_dma(FLOPPY_DMA);
  61 }
  62
  63 static inline void fd_clear_dma_ff(void)
  64 {
  65         clear_dma_ff(FLOPPY_DMA);
  66 }
  67
  68 static inline void fd_set_dma_mode(char mode)
  69 {
  70         set_dma_mode(FLOPPY_DMA, mode);
  71 }
  72
  73 static inline void fd_set_dma_addr(char *addr)
  74 {
  75         set_dma_addr(FLOPPY_DMA, (unsigned long) addr);
  76 }
  77
  78 static inline void fd_set_dma_count(unsigned int count)
  79 {
  80         set_dma_count(FLOPPY_DMA, count);
  81 }
  82
  83 static inline int fd_get_dma_residue(void)
  84 {
  85         return get_dma_residue(FLOPPY_DMA);
  86 }
  87
  88 static inline void fd_enable_irq(void)
  89 {
  90         enable_irq(FLOPPY_IRQ);
  91 }
  92
  93 static inline void fd_disable_irq(void)
  94 {
  95         disable_irq(FLOPPY_IRQ);
  96 }
  97
  98 static inline int fd_request_irq(void)
  99 {
 100         return request_irq(FLOPPY_IRQ, floppy_interrupt,
 101                            IRQF_DISABLED, "floppy", NULL);
 102 }
 103
 104 static inline void fd_free_irq(void)
 105 {
 106         free_irq(FLOPPY_IRQ, NULL);
 107 }
 108
 109 #define fd_free_irq()           free_irq(FLOPPY_IRQ, NULL);
 110
 111
 112 static inline unsigned long fd_getfdaddr1(void)
 113 {
 114         return 0x3f0;
 115 }
 116
 117 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
 118 {
 119         unsigned long mem;
 120
 121         mem = __get_dma_pages(GFP_KERNEL, get_order(size));
 122
 123         return mem;
 124 }
 125
 126 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
 127 {
 128         free_pages(addr, get_order(size));
 129 }
 130
 131 static inline unsigned long fd_drive_type(unsigned long n)
 132 {
 133         if (n == 0)
 134                 return 4;       /* 3,5", 1.44mb */
 135
 136         return 0;
 137 }
 138
 139 #endif /* __ASM_MACH_GENERIC_FLOPPY_H */