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Rev | Author | Line No. | Line |
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422 | giacomo | 1 | /* |
2 | * linux/include/asm-i386/ide.h |
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3 | * |
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4 | * Copyright (C) 1994-1996 Linus Torvalds & authors |
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5 | */ |
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6 | |||
7 | /* |
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8 | * This file contains the i386 architecture specific IDE code. |
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9 | */ |
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10 | |||
11 | #ifndef __ASMi386_IDE_H |
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12 | #define __ASMi386_IDE_H |
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13 | |||
14 | #ifdef __KERNEL__ |
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15 | |||
16 | #include <linux/config.h> |
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17 | |||
18 | #ifndef MAX_HWIFS |
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19 | # ifdef CONFIG_BLK_DEV_IDEPCI |
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20 | #define MAX_HWIFS 10 |
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21 | # else |
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22 | #define MAX_HWIFS 6 |
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23 | # endif |
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24 | #endif |
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25 | |||
26 | static __inline__ int ide_default_irq(unsigned long base) |
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27 | { |
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28 | switch (base) { |
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29 | #ifdef CONFIG_X86_PC9800 |
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30 | case 0x640: return 9; |
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31 | #endif |
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32 | case 0x1f0: return 14; |
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33 | case 0x170: return 15; |
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34 | case 0x1e8: return 11; |
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35 | case 0x168: return 10; |
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36 | case 0x1e0: return 8; |
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37 | case 0x160: return 12; |
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38 | default: |
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39 | return 0; |
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40 | } |
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41 | } |
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42 | |||
43 | static __inline__ unsigned long ide_default_io_base(int index) |
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44 | { |
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45 | switch (index) { |
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46 | #ifdef CONFIG_X86_PC9800 |
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47 | case 0: |
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48 | case 1: return 0x640; |
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49 | #else |
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50 | case 0: return 0x1f0; |
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51 | case 1: return 0x170; |
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52 | case 2: return 0x1e8; |
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53 | case 3: return 0x168; |
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54 | case 4: return 0x1e0; |
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55 | case 5: return 0x160; |
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56 | #endif |
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57 | default: |
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58 | return 0; |
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59 | } |
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60 | } |
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61 | |||
62 | static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port, |
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63 | unsigned long ctrl_port, int *irq) |
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64 | { |
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65 | unsigned long reg = data_port; |
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66 | int i; |
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67 | #ifdef CONFIG_X86_PC9800 |
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68 | unsigned long increment = data_port == 0x640 ? 2 : 1; |
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69 | #endif |
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70 | |||
71 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { |
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72 | hw->io_ports[i] = reg; |
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73 | #ifdef CONFIG_X86_PC9800 |
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74 | reg += increment; |
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75 | #else |
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76 | reg += 1; |
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77 | #endif |
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78 | } |
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79 | if (ctrl_port) { |
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80 | hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port; |
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81 | #ifdef CONFIG_X86_PC9800 |
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82 | } else if (data_port == 0x640) { |
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83 | hw->io_ports[IDE_CONTROL_OFFSET] = 0x74c; |
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84 | #endif |
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85 | } else { |
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86 | hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206; |
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87 | } |
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88 | if (irq != NULL) |
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89 | *irq = 0; |
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90 | hw->io_ports[IDE_IRQ_OFFSET] = 0; |
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91 | } |
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92 | |||
93 | static __inline__ void ide_init_default_hwifs(void) |
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94 | { |
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95 | #ifndef CONFIG_BLK_DEV_IDEPCI |
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96 | hw_regs_t hw; |
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97 | int index; |
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98 | |||
99 | for(index = 0; index < MAX_HWIFS; index++) { |
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100 | memset(&hw, 0, sizeof hw); |
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101 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL); |
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102 | hw.irq = ide_default_irq(ide_default_io_base(index)); |
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103 | ide_register_hw(&hw, NULL); |
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104 | } |
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105 | #endif /* CONFIG_BLK_DEV_IDEPCI */ |
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106 | } |
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107 | |||
108 | #include <asm-generic/ide_iops.h> |
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109 | |||
110 | #endif /* __KERNEL__ */ |
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111 | |||
112 | #endif /* __ASMi386_IDE_H */ |