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
  35 #include <asm/setup.h>
  36 #include <asm/io.h>
  37 #include <asm/irq.h>
  38
  39 #ifdef CONFIG_ATARI
  40 #include <linux/interrupt.h>
  41 #include <asm/atari_stdma.h>
  42 #endif
  43
  44 #ifdef CONFIG_MAC
  45 #include <asm/macints.h>
  46 #endif
  47
  48 #ifndef MAX_HWIFS
  49 #define MAX_HWIFS       4       /* same as the other archs */
  50 #endif
  51
  52 /*
  53  * Get rid of defs from io.h - ide has its private and conflicting versions
  54  * Since so far no single m68k platform uses ISA/PCI I/O space for IDE, we
  55  * always use the `raw' MMIO versions
  56  */
  57 #undef inb
  58 #undef inw
  59 #undef insw
  60 #undef inl
  61 #undef insl
  62 #undef outb
  63 #undef outw
  64 #undef outsw
  65 #undef outl
  66 #undef outsl
  67 #undef readb
  68 #undef readw
  69 #undef readl
  70 #undef writeb
  71 #undef writew
  72 #undef writel
  73
  74 #define inb                             in_8
  75 #define inw                             in_be16
  76 #define insw(port, addr, n)             raw_insw((u16 *)port, addr, n)
  77 #define inl                             in_be32
  78 #define insl(port, addr, n)             raw_insl((u32 *)port, addr, n)
  79 #define outb(val, port)                 out_8(port, val)
  80 #define outw(val, port)                 out_be16(port, val)
  81 #define outsw(port, addr, n)            raw_outsw((u16 *)port, addr, n)
  82 #define outl(val, port)                 out_be32(port, val)
  83 #define outsl(port, addr, n)            raw_outsl((u32 *)port, addr, n)
  84 #define readb                           in_8
  85 #define readw                           in_be16
  86 #define __ide_mm_insw(port, addr, n)    raw_insw((u16 *)port, addr, n)
  87 #define readl                           in_be32
  88 #define __ide_mm_insl(port, addr, n)    raw_insl((u32 *)port, addr, n)
  89 #define writeb(val, port)               out_8(port, val)
  90 #define writew(val, port)               out_be16(port, val)
  91 #define __ide_mm_outsw(port, addr, n)   raw_outsw((u16 *)port, addr, n)
  92 #define writel(val, port)               out_be32(port, val)
  93 #define __ide_mm_outsl(port, addr, n)   raw_outsl((u32 *)port, addr, n)
  94 #if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
  95 #define insw_swapw(port, addr, n)       raw_insw_swapw((u16 *)port, addr, n)
  96 #define outsw_swapw(port, addr, n)      raw_outsw_swapw((u16 *)port, addr, n)
  97 #endif
  98
  99
 100 /* Q40 and Atari have byteswapped IDE busses and since many interesting
 101  * values in the identification string are text, chars and words they
 102  * happened to be almost correct without swapping.. However *_capacity
 103  * is needed for drives over 8 GB. RZ */
 104 #if defined(CONFIG_Q40) || defined(CONFIG_ATARI)
 105 #define M68K_IDE_SWAPW  (MACH_IS_Q40 || MACH_IS_ATARI)
 106 #endif
 107
 108 #ifdef CONFIG_BLK_DEV_FALCON_IDE
 109 #define IDE_ARCH_LOCK
 110
 111 extern int falconide_intr_lock;
 112
 113 static __inline__ void ide_release_lock (void)
 114 {
 115         if (MACH_IS_ATARI) {
 116                 if (falconide_intr_lock == 0) {
 117                         printk("ide_release_lock: bug\n");
 118                         return;
 119                 }
 120                 falconide_intr_lock = 0;
 121                 stdma_release();
 122         }
 123 }
 124
 125 static __inline__ void
 126 ide_get_lock(irqreturn_t (*handler)(int, void *, struct pt_regs *), void *data)
 127 {
 128         if (MACH_IS_ATARI) {
 129                 if (falconide_intr_lock == 0) {
 130                         if (in_interrupt() > 0)
 131                                 panic( "Falcon IDE hasn't ST-DMA lock in interrupt" );
 132                         stdma_lock(handler, data);
 133                         falconide_intr_lock = 1;
 134                 }
 135         }
 136 }
 137 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
 138
 139 #define IDE_ARCH_ACK_INTR
 140 #define ide_ack_intr(hwif)      ((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1)
 141
 142 #endif /* __KERNEL__ */
 143 #endif /* _M68K_IDE_H */