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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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 */ |