include/asm-alpha/ide.h

   1 /*
   2  *  linux/include/asm-alpha/ide.h
   3  *
   4  *  Copyright (C) 1994-1996  Linus Torvalds & authors
   5  */
   6
   7 /*
   8  *  This file contains the alpha architecture specific IDE code.
   9  */
  10
  11 #ifndef __ASMalpha_IDE_H
  12 #define __ASMalpha_IDE_H
  13
  14 #ifdef __KERNEL__
  15
  16 #include <linux/config.h>
  17
  18 #ifndef MAX_HWIFS
  19 #define MAX_HWIFS       CONFIG_IDE_MAX_HWIFS
  20 #endif
  21
  22 static __inline__ int ide_default_irq(ide_ioreg_t base)
  23 {
  24         switch (base) {
  25                 case 0x1f0: return 14;
  26                 case 0x170: return 15;
  27                 case 0x1e8: return 11;
  28                 case 0x168: return 10;
  29                 default:
  30                         return 0;
  31         }
  32 }
  33
  34 static __inline__ ide_ioreg_t ide_default_io_base(int index)
  35 {
  36         switch (index) {
  37                 case 0: return 0x1f0;
  38                 case 1: return 0x170;
  39                 case 2: return 0x1e8;
  40                 case 3: return 0x168;
  41                 default:
  42                         return 0;
  43         }
  44 }
  45
  46 static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
  47 {
  48         ide_ioreg_t reg = data_port;
  49         int i;
  50
  51         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
  52                 hw->io_ports[i] = reg;
  53                 reg += 1;
  54         }
  55         if (ctrl_port) {
  56                 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
  57         } else {
  58                 hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
  59         }
  60         if (irq != NULL)
  61                 *irq = 0;
  62         hw->io_ports[IDE_IRQ_OFFSET] = 0;
  63 }
  64
  65 /*
  66  * This registers the standard ports for this architecture with the IDE
  67  * driver.
  68  */
  69 static __inline__ void ide_init_default_hwifs(void)
  70 {
  71 #ifndef CONFIG_PCI
  72         hw_regs_t hw;
  73         int index;
  74
  75         for (index = 0; index < MAX_HWIFS; index++) {
  76                 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
  77                 hw.irq = ide_default_irq(ide_default_io_base(index));
  78                 ide_register_hw(&hw, NULL);
  79         }
  80 #endif
  81 }
  82
  83 #include <asm-generic/ide_iops.h>
  84
  85 #endif /* __KERNEL__ */
  86
  87 #endif /* __ASMalpha_IDE_H */