include/asm-m68k/ide.h

   1 /*
   2  *  linux/include/asm-m68k/ide.h
   3  *
   4  *  Copyright (C) 1994-1996  Linus Torvalds & authors
   5  */
   6
   7 /* Copyright(c) 1996 Kars de Jong */
   8 /* Based on the ide driver from 1.2.13pl8 */
   9
  10 /*
  11  * Credits (alphabetical):
  12  *
  13  *  - Bjoern Brauel
  14  *  - Kars de Jong
  15  *  - Torsten Ebeling
  16  *  - Dwight Engen
  17  *  - Thorsten Floeck
  18  *  - Roman Hodek
  19  *  - Guenther Kelleter
  20  *  - Chris Lawrence
  21  *  - Michael Rausch
  22  *  - Christian Sauer
  23  *  - Michael Schmitz
  24  *  - Jes Soerensen
  25  *  - Michael Thurm
  26  *  - Geert Uytterhoeven
  27  */
  28
  29 #ifndef _M68K_IDE_H
  30 #define _M68K_IDE_H
  31
  32 #ifdef __KERNEL__
  33
  34 #include <linux/config.h>
  35
  36 #include <asm/setup.h>
  37 #include <asm/io.h>
  38 #include <asm/irq.h>
  39
  40 #ifdef CONFIG_ATARI
  41 #include <linux/interrupt.h>
  42 #include <asm/atari_stdma.h>
  43 #endif
  44
  45 #ifdef CONFIG_MAC
  46 #include <asm/macints.h>
  47 #endif
  48
  49 #ifndef MAX_HWIFS
  50 #define MAX_HWIFS       4       /* same as the other archs */
  51 #endif
  52
  53 /*
  54  * Get rid of defs from io.h - ide has its private and conflicting versions
  55  * Since so far no single m68k platform uses ISA/PCI I/O space for IDE, we
  56  * always use the `raw' MMIO versions
  57  */
  58 #undef inb
  59 #undef inw
  60 #undef insw
  61 #undef inl
  62 #undef insl
  63 #undef outb
  64 #undef outw
  65 #undef outsw
  66 #undef outl
  67 #undef outsl
  68 #undef readb
  69 #undef readw
  70 #undef readl
  71 #undef writeb
  72 #undef writew
  73 #undef writel
  74
  75 #define inb                             in_8
  76 #define inw                             in_be16
  77 #define insw(port, addr, n)             raw_insw((u16 *)port, addr, n)
  78 #define inl                             in_be32
  79 #define insl(port, addr, n)             raw_insl((u32 *)port, addr, n)
  80 #define outb(val, port)                 out_8(port, val)
  81 #define outw(val, port)                 out_be16(port, val)
  82 #define outsw(port, addr, n)            raw_outsw((u16 *)port, addr, n)
  83 #define outl(val, port)                 out_be32(port, val)
  84 #define outsl(port, addr, n)            raw_outsl((u32 *)port, addr, n)
  85 #define readb                           in_8
  86 #define readw                           in_be16
  87 #define __ide_mm_insw(port, addr, n)    raw_insw((u16 *)port, addr, n)
  88 #define readl                           in_be32
  89 #define __ide_mm_insl(port, addr, n)    raw_insl((u32 *)port, addr, n)
  90 #define writeb(val, port)               out_8(port, val)
  91 #define writew(val, port)               out_be16(port, val)
  92 #define __ide_mm_outsw(port, addr, n)   raw_outsw((u16 *)port, addr, n)
  93 #define writel(val, port)               out_be32(port, val)
  94 #define __ide_mm_outsl(port, addr, n)   raw_outsl((u32 *)port, addr, n)
  95 #if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
  96 #define insw_swapw(port, addr, n)       raw_insw_swapw((u16 *)port, addr, n)
  97 #define outsw_swapw(port, addr, n)      raw_outsw_swapw((u16 *)port, addr, n)
  98 #endif
  99
 100
 101 /* Q40 and Atari have byteswapped IDE busses and since many interesting
 102  * values in the identification string are text, chars and words they
 103  * happened to be almost correct without swapping.. However *_capacity
 104  * is needed for drives over 8 GB. RZ */
 105 #if defined(CONFIG_Q40) || defined(CONFIG_ATARI)
 106 #define M68K_IDE_SWAPW  (MACH_IS_Q40 || MACH_IS_ATARI)
 107 #endif
 108
 109 #ifdef CONFIG_BLK_DEV_FALCON_IDE
 110 #define IDE_ARCH_LOCK
 111
 112 extern int falconide_intr_lock;
 113
 114 static __inline__ void ide_release_lock (void)
 115 {
 116         if (MACH_IS_ATARI) {
 117                 if (falconide_intr_lock == 0) {
 118                         printk("ide_release_lock: bug\n");
 119                         return;
 120                 }
 121                 falconide_intr_lock = 0;
 122                 stdma_release();
 123         }
 124 }
 125
 126 static __inline__ void
 127 ide_get_lock(irqreturn_t (*handler)(int, void *, struct pt_regs *), void *data)
 128 {
 129         if (MACH_IS_ATARI) {
 130                 if (falconide_intr_lock == 0) {
 131                         if (in_interrupt() > 0)
 132                                 panic( "Falcon IDE hasn't ST-DMA lock in interrupt" );
 133                         stdma_lock(handler, data);
 134                         falconide_intr_lock = 1;
 135                 }
 136         }
 137 }
 138 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
 139
 140 #define IDE_ARCH_ACK_INTR
 141 #define ide_ack_intr(hwif)      ((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1)
 142
 143 #endif /* __KERNEL__ */
 144 #endif /* _M68K_IDE_H */