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/init.h>
  13 #include <linux/linkage.h>
  14 #include <linux/types.h>
  15 #include <linux/mm.h>
  16 #include <asm/addrspace.h>
  17 #include <asm/jazz.h>
  18 #include <asm/jazzdma.h>
  19 #include <asm/pgtable.h>
  20
  21 static inline unsigned char fd_inb(unsigned int port)
  22 {
  23         unsigned char c;
  24
  25         c = *(volatile unsigned char *) port;
  26         udelay(1);
  27
  28         return c;
  29 }
  30
  31 static inline void fd_outb(unsigned char value, unsigned int port)
  32 {
  33         *(volatile unsigned char *) port = value;
  34 }
  35
  36 /*
  37  * How to access the floppy DMA functions.
  38  */
  39 static inline void fd_enable_dma(void)
  40 {
  41         vdma_enable(JAZZ_FLOPPY_DMA);
  42 }
  43
  44 static inline void fd_disable_dma(void)
  45 {
  46         vdma_disable(JAZZ_FLOPPY_DMA);
  47 }
  48
  49 static inline int fd_request_dma(void)
  50 {
  51         return 0;
  52 }
  53
  54 static inline void fd_free_dma(void)
  55 {
  56 }
  57
  58 static inline void fd_clear_dma_ff(void)
  59 {
  60 }
  61
  62 static inline void fd_set_dma_mode(char mode)
  63 {
  64         vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
  65 }
  66
  67 static inline void fd_set_dma_addr(char *a)
  68 {
  69         vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
  70 }
  71
  72 static inline void fd_set_dma_count(unsigned int count)
  73 {
  74         vdma_set_count(JAZZ_FLOPPY_DMA, count);
  75 }
  76
  77 static inline int fd_get_dma_residue(void)
  78 {
  79         return vdma_get_residue(JAZZ_FLOPPY_DMA);
  80 }
  81
  82 static inline void fd_enable_irq(void)
  83 {
  84 }
  85
  86 static inline void fd_disable_irq(void)
  87 {
  88 }
  89
  90 static inline int fd_request_irq(void)
  91 {
  92         return request_irq(FLOPPY_IRQ, floppy_interrupt,
  93                            0, "floppy", NULL);
  94 }
  95
  96 static inline void fd_free_irq(void)
  97 {
  98         free_irq(FLOPPY_IRQ, NULL);
  99 }
 100
 101 static inline unsigned long fd_getfdaddr1(void)
 102 {
 103         return JAZZ_FDC_BASE;
 104 }
 105
 106 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
 107 {
 108         unsigned long mem;
 109
 110         mem = __get_dma_pages(GFP_KERNEL, get_order(size));
 111         if(!mem)
 112                 return 0;
 113         vdma_alloc(CPHYSADDR(mem), size);       /* XXX error checking */
 114
 115         return mem;
 116 }
 117
 118 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
 119 {
 120         vdma_free(vdma_phys2log(CPHYSADDR(addr)));
 121         free_pages(addr, get_order(size));
 122 }
 123
 124 static inline unsigned long fd_drive_type(unsigned long n)
 125 {
 126         /* XXX This is wrong for machines with ED 2.88mb disk drives like the
 127            Olivetti M700.  Anyway, we should suck this from the ARC
 128            firmware.  */
 129         if (n == 0)
 130                 return 4;       /* 3,5", 1.44mb */
 131
 132         return 0;
 133 }
 134
 135 #endif /* __ASM_MACH_JAZZ_FLOPPY_H */