arch/mips/include/asm/mach-jazz/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) 1998, 2003 by Ralf Baechle
   7  */
   8 #ifndef __ASM_MACH_JAZZ_FLOPPY_H
   9 #define __ASM_MACH_JAZZ_FLOPPY_H
  10
  11 #include <linux/delay.h>
  12 #include <linux/linkage.h>
  13 #include <linux/types.h>
  14 #include <linux/mm.h>
  15 #include <asm/addrspace.h>
  16 #include <asm/jazz.h>
  17 #include <asm/jazzdma.h>
  18
  19 static inline unsigned char fd_inb(unsigned int base, unsigned int reg)
  20 {
  21         unsigned char c;
  22
  23         c = *(volatile unsigned char *) (base + reg);
  24         udelay(1);
  25
  26         return c;
  27 }
  28
  29 static inline void fd_outb(unsigned char value, unsigned int base, unsigned int reg)
  30 {
  31         *(volatile unsigned char *) (base + reg) = value;
  32 }
  33
  34 /*
  35  * How to access the floppy DMA functions.
  36  */
  37 static inline void fd_enable_dma(void)
  38 {
  39         vdma_enable(JAZZ_FLOPPY_DMA);
  40 }
  41
  42 static inline void fd_disable_dma(void)
  43 {
  44         vdma_disable(JAZZ_FLOPPY_DMA);
  45 }
  46
  47 static inline int fd_request_dma(void)
  48 {
  49         return 0;
  50 }
  51
  52 static inline void fd_free_dma(void)
  53 {
  54 }
  55
  56 static inline void fd_clear_dma_ff(void)
  57 {
  58 }
  59
  60 static inline void fd_set_dma_mode(char mode)
  61 {
  62         vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
  63 }
  64
  65 static inline void fd_set_dma_addr(char *a)
  66 {
  67         vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
  68 }
  69
  70 static inline void fd_set_dma_count(unsigned int count)
  71 {
  72         vdma_set_count(JAZZ_FLOPPY_DMA, count);
  73 }
  74
  75 static inline int fd_get_dma_residue(void)
  76 {
  77         return vdma_get_residue(JAZZ_FLOPPY_DMA);
  78 }
  79
  80 static inline void fd_enable_irq(void)
  81 {
  82 }
  83
  84 static inline void fd_disable_irq(void)
  85 {
  86 }
  87
  88 static inline int fd_request_irq(void)
  89 {
  90         return request_irq(FLOPPY_IRQ, floppy_interrupt,
  91                            0, "floppy", NULL);
  92 }
  93
  94 static inline void fd_free_irq(void)
  95 {
  96         free_irq(FLOPPY_IRQ, NULL);
  97 }
  98
  99 static inline unsigned long fd_getfdaddr1(void)
 100 {
 101         return JAZZ_FDC_BASE;
 102 }
 103
 104 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
 105 {
 106         unsigned long mem;
 107
 108         mem = __get_dma_pages(GFP_KERNEL, get_order(size));
 109         if(!mem)
 110                 return 0;
 111         vdma_alloc(CPHYSADDR(mem), size);       /* XXX error checking */
 112
 113         return mem;
 114 }
 115
 116 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
 117 {
 118         vdma_free(vdma_phys2log(CPHYSADDR(addr)));
 119         free_pages(addr, get_order(size));
 120 }
 121
 122 static inline unsigned long fd_drive_type(unsigned long n)
 123 {
 124         /* XXX This is wrong for machines with ED 2.88mb disk drives like the
 125            Olivetti M700.  Anyway, we should suck this from the ARC
 126            firmware.  */
 127         if (n == 0)
 128                 return 4;       /* 3,5", 1.44mb */
 129
 130         return 0;
 131 }
 132
 133 #endif /* __ASM_MACH_JAZZ_FLOPPY_H */