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Rev | Author | Line No. | Line |
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1638 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2007-2008. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | IRQ_RESERVE = 24 ; 16 or 24 |
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9 | |||
10 | iglobal |
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2010 | serge | 11 | IRQ_COUNT dd 24 |
1638 | serge | 12 | endg |
13 | |||
14 | uglobal |
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15 | APIC: dd 0 |
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16 | LAPIC_BASE: dd 0 |
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17 | IOAPIC_base: dd 0 |
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18 | endg |
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19 | |||
20 | APIC_ID equ 0x20 |
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21 | APIC_TPR equ 0x80 |
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22 | APIC_EOI equ 0xb0 |
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23 | APIC_LDR equ 0xd0 |
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24 | APIC_DFR equ 0xe0 |
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25 | APIC_SVR equ 0xf0 |
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26 | APIC_ISR equ 0x100 |
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27 | APIC_ESR equ 0x280 |
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28 | APIC_ICRL equ 0x300 |
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29 | APIC_ICRH equ 0x310 |
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30 | APIC_LVT_LINT0 equ 0x350 |
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31 | APIC_LVT_LINT1 equ 0x360 |
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32 | APIC_LVT_err equ 0x370 |
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33 | |||
34 | ; APIC timer |
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35 | APIC_LVT_timer equ 0x320 |
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36 | APIC_timer_div equ 0x3e0 |
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37 | APIC_timer_init equ 0x380 |
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38 | APIC_timer_cur equ 0x390 |
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39 | ; IOAPIC |
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40 | IOAPIC_ID equ 0x0 |
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41 | IOAPIC_VER equ 0x1 |
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42 | IOAPIC_ARB equ 0x2 |
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43 | IOAPIC_REDTBL equ 0x10 |
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44 | |||
45 | APIC_init: |
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46 | mov dword[APIC], 0 |
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47 | ; jmp .no_apic ; NO APIC |
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2010 | serge | 48 | ; bt [cpu_caps], CAPS_APIC |
49 | ; jnc .no_apic |
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1638 | serge | 50 | ; Check for MP table |
51 | ;..... |
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2010 | serge | 52 | |
1638 | serge | 53 | call IRQ_mask_all |
2010 | serge | 54 | |
1638 | serge | 55 | ; IOAPIC init |
56 | ; 0xfec00000 - may be relocated, see chip reference... & MP table |
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57 | stdcall map_io_mem, 0xfec00000, 0x20, PG_SW |
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58 | mov [IOAPIC_base], eax |
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2010 | serge | 59 | |
1638 | serge | 60 | mov eax, IOAPIC_VER |
61 | call IOAPIC_read |
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62 | shr eax, 16 |
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63 | inc al |
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64 | movzx eax, al |
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65 | cmp al, IRQ_RESERVE |
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66 | jbe @f |
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67 | mov al, IRQ_RESERVE |
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68 | @@: mov [IRQ_COUNT], eax |
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69 | |||
70 | ; Reroute IOAPIC & mask all interrupts |
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71 | xor ecx, ecx |
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72 | mov eax, IOAPIC_REDTBL |
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73 | @@: mov ebx, eax |
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74 | call IOAPIC_read |
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75 | mov ah, 0x09 ; Delivery Mode: Lowest Priority, Destination Mode: Logical |
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76 | mov al, cl |
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77 | add al, 0x20 ; vector |
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78 | or eax, 0x10000 ; Mask Interrupt |
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79 | cmp ecx, 16 |
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80 | jb .set |
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81 | or eax, 0xa000 ;<<< level-triggered active-low for IRQ16+ |
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82 | .set: |
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83 | xchg eax, ebx |
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84 | call IOAPIC_write |
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85 | inc eax |
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86 | mov ebx, eax |
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87 | call IOAPIC_read |
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88 | or eax, 0xff000000 ; Destination Field |
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89 | xchg eax, ebx |
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90 | call IOAPIC_write |
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91 | inc eax |
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92 | inc ecx |
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93 | cmp ecx, [IRQ_COUNT] |
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94 | jb @b |
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95 | |||
96 | call LAPIC_init |
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2010 | serge | 97 | |
1638 | serge | 98 | mov dword[APIC], 0xffffffff |
2010 | serge | 99 | |
100 | mov al, 0x70 |
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101 | out 0x22, al |
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102 | mov al, 1 |
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103 | out 0x23, al |
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104 | |||
1638 | serge | 105 | ; mov dword[irq_type_to_set], IRQ_TYPE_APIC |
106 | .no_apic: |
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107 | ret |
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2010 | serge | 108 | |
1638 | serge | 109 | ;=========================================================== |
110 | align 4 |
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111 | LAPIC_init: |
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112 | ; Check MSR support |
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113 | ;.... |
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114 | ; Get LAPIC base address |
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115 | mov ecx, 0x1b |
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116 | rdmsr ; it may be replaced to |
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117 | and ax, 0xf000 ; mov eax, 0xfee00000 |
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2010 | serge | 118 | |
1638 | serge | 119 | stdcall map_io_mem, eax, 0x1000, PG_SW |
120 | mov [LAPIC_BASE], eax |
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121 | mov esi, eax |
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2010 | serge | 122 | |
1638 | serge | 123 | ; Program Destination Format Register for Flat mode. |
124 | mov eax, [esi + APIC_DFR] |
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125 | or eax, 0xf0000000 |
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126 | mov [esi + APIC_DFR], eax |
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2010 | serge | 127 | |
128 | |||
1638 | serge | 129 | ; Program Logical Destination Register. |
130 | mov eax, [esi + APIC_LDR] |
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131 | ;and eax, 0xff000000 |
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132 | and eax, 0x00ffffff |
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133 | or eax, 0x01000000 ;!!!!!!!!!!!! |
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134 | mov [esi + APIC_LDR], eax |
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2010 | serge | 135 | |
1638 | serge | 136 | ; Task Priority Register initialization. |
137 | mov eax, [esi + APIC_TPR] |
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138 | and eax, 0xffffff00 |
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139 | mov [esi + APIC_TPR], eax |
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140 | |||
141 | ; Flush the queue |
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142 | mov edx, 0 |
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143 | .nxt2: mov ecx, 32 |
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144 | mov eax, [esi + APIC_ISR + edx] |
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145 | .nxt: shr eax, 1 |
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146 | jnc @f |
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147 | mov dword [esi + APIC_EOI], 0 ; EOI |
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148 | @@: loop .nxt |
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149 | add edx, 0x10 |
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150 | cmp edx, 0x170 |
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151 | jbe .nxt2 |
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152 | |||
153 | ; Spurious-Interrupt Vector Register initialization. |
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154 | mov eax, [esi + APIC_SVR] |
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155 | or eax, 0x1ff |
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156 | and eax, 0xfffffdff |
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157 | mov [esi + APIC_SVR], eax |
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158 | |||
159 | ; Initialize LVT LINT0 register. (INTR) |
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160 | mov eax, 0x00700 |
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161 | ; mov eax, 0x10700 |
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162 | mov [esi + APIC_LVT_LINT0], eax |
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163 | |||
164 | ; Initialize LVT LINT1 register. (NMI) |
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165 | mov eax, 0x00400 |
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166 | mov [esi + APIC_LVT_LINT1], eax |
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167 | |||
168 | ; Initialize LVT Error register. |
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169 | mov eax, [esi + APIC_LVT_err] |
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170 | or eax, 0x10000 ; bit 16 |
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171 | mov [esi + APIC_LVT_err], eax |
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2010 | serge | 172 | |
1638 | serge | 173 | ; LAPIC timer |
174 | ; pre init |
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175 | mov dword[esi + APIC_timer_div], 1011b ; 1 |
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176 | mov dword[esi + APIC_timer_init], 0xffffffff ; max val |
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177 | push esi |
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178 | mov esi, 640 ; wait 0.64 sec |
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179 | call delay_ms |
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180 | pop esi |
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181 | mov eax, [esi + APIC_timer_cur] ; read current tick couner |
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182 | xor eax, 0xffffffff ; eax = 0xffffffff - eax |
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183 | shr eax, 6 ; eax /= 64; APIC ticks per 0.01 sec |
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2010 | serge | 184 | |
1638 | serge | 185 | ; Start (every 0.01 sec) |
186 | mov dword[esi + APIC_LVT_timer], 0x30020 ; periodic int 0x20 |
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187 | mov dword[esi + APIC_timer_init], eax |
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2010 | serge | 188 | |
1638 | serge | 189 | ret |
190 | ;=========================================================== |
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191 | ; IOAPIC implementation |
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192 | align 4 |
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193 | IOAPIC_read: |
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194 | ; in : EAX - IOAPIC register |
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195 | ; out: EAX - readed value |
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196 | push esi |
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197 | mov esi, [IOAPIC_base] |
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198 | mov [esi], eax |
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199 | mov eax, [esi + 0x10] |
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200 | pop esi |
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201 | ret |
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202 | align 4 |
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203 | IOAPIC_write: |
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204 | ; in : EAX - IOAPIC register |
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205 | ; EBX - value |
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206 | ; out: none |
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207 | push esi |
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208 | mov esi, [IOAPIC_base] |
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209 | mov [esi], eax |
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210 | mov [esi + 0x10], ebx |
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211 | pop esi |
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212 | ret |
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213 | ;=========================================================== |
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214 | ; Remap all IRQ to 0x20+ Vectors |
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215 | ; IRQ0 to vector 0x20, IRQ1 to vector 0x21.... |
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216 | PIC_init: |
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217 | cli |
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218 | mov al,0x11 ; icw4, edge triggered |
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219 | out 0x20,al |
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220 | call pic_delay |
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221 | out 0xA0,al |
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222 | call pic_delay |
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223 | |||
224 | mov al,0x20 ; generate 0x20 + |
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225 | out 0x21,al |
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226 | call pic_delay |
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227 | mov al,0x28 ; generate 0x28 + |
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228 | out 0xA1,al |
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229 | call pic_delay |
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230 | |||
231 | mov al,0x04 ; slave at irq2 |
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232 | out 0x21,al |
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233 | call pic_delay |
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234 | mov al,0x02 ; at irq9 |
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235 | out 0xA1,al |
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236 | call pic_delay |
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237 | |||
238 | mov al,0x01 ; 8086 mode |
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239 | out 0x21,al |
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240 | call pic_delay |
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241 | out 0xA1,al |
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242 | call pic_delay |
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243 | |||
244 | call IRQ_mask_all |
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245 | cli |
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246 | ; mov dword[irq_type_to_set], IRQ_TYPE_PIC |
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247 | ret |
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248 | |||
249 | ; ----------------------------------------- |
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250 | pic_delay: |
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251 | jmp pdl1 |
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252 | pdl1: ret |
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253 | |||
254 | ; ----------------------------------------- |
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255 | ; TIMER SET TO 1/100 S |
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256 | PIT_init: |
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257 | mov al,0x34 ; set to 100Hz |
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258 | out 0x43,al |
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259 | mov al,0x9b ; lsb 1193180 / 1193 |
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260 | out 0x40,al |
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261 | mov al,0x2e ; msb |
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262 | out 0x40,al |
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263 | ret |
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264 | |||
265 | ; ----------------------------------------- |
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266 | unmask_timer: |
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267 | test dword[APIC], 0xffffffff |
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268 | jnz @f |
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269 | stdcall enable_irq, 0 |
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270 | ret |
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271 | @@: |
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272 | ; use PIT |
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273 | ; in some systems PIT no connected to IOAPIC |
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274 | ; mov eax, 0x14 |
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275 | ; call IOAPIC_read |
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276 | ; mov ah, 0x09 ; Delivery Mode: Lowest Priority, Destination Mode: Logical |
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277 | ; mov al, 0x20 |
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278 | ; or eax, 0x10000 ; Mask Interrupt |
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279 | ; mov ebx, eax |
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280 | ; mov eax, 0x14 |
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281 | ; call IOAPIC_write |
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282 | ; stdcall enable_irq, 2 |
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283 | ; ret |
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284 | |||
285 | ; use LAPIC timer |
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286 | mov esi, [LAPIC_BASE] |
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287 | mov eax, [esi + APIC_LVT_timer] |
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288 | and eax, 0xfffeffff |
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289 | mov [esi + APIC_LVT_timer], eax |
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290 | ret |
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291 | |||
292 | ; ----------------------------------------- |
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293 | ; Disable all IRQ |
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294 | IRQ_mask_all: |
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295 | test dword[APIC], 0xffffffff |
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296 | jnz .APIC |
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297 | mov al, 0xFF |
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298 | out 0x21, al |
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299 | out 0xA1, al |
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300 | mov ecx,0x1000 |
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301 | cld |
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302 | @@: call pic_delay |
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303 | loop @b |
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304 | ret |
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305 | .APIC: |
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306 | mov ecx, [IRQ_COUNT] |
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307 | mov eax, 0x10 |
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308 | @@: mov ebx, eax |
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309 | call IOAPIC_read |
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310 | or eax, 0x10000 ; bit 16 |
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311 | xchg eax, ebx |
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312 | call IOAPIC_write |
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313 | inc eax |
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314 | inc eax |
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315 | loop @b |
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316 | ret |
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317 | ; ----------------------------------------- |
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318 | ; End Of Interrupt |
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319 | ; al - IRQ number |
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320 | align 16 |
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321 | IRQ_EOI: |
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322 | test dword[APIC], 0xffffffff |
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323 | jnz .APIC |
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324 | cmp al, 8 |
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325 | mov al, 0x20 |
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326 | jb @f |
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327 | out 0xa0, al |
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328 | @@: out 0x20, al |
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329 | ret |
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330 | .APIC: |
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331 | mov eax, [LAPIC_BASE] |
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332 | mov dword [eax + APIC_EOI], 0 ; EOI |
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333 | ret |
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334 | |||
335 | ; ----------------------------------------- |
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336 | ; from dll.inc |
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337 | align 4 |
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338 | proc enable_irq stdcall, irq_line:dword |
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339 | mov ebx, [irq_line] |
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340 | test dword[APIC], 0xffffffff |
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341 | jnz .APIC |
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342 | mov edx, 0x21 |
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343 | cmp ebx, 8 |
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344 | jb @F |
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345 | mov edx, 0xA1 |
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346 | sub ebx,8 |
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347 | @@: |
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348 | in al,dx |
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349 | btr eax, ebx |
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350 | out dx, al |
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351 | ret |
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352 | .APIC: |
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353 | shl ebx, 1 |
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354 | add ebx, 0x10 |
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355 | mov eax, ebx |
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356 | call IOAPIC_read |
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357 | and eax, 0xfffeffff ; bit 16 |
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358 | xchg eax, ebx |
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359 | call IOAPIC_write |
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360 | ret |
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361 | endp |
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362 | |||
363 | |||
364 | |||
365 | ; IRQ_TYPE_DISABLE equ 0 |
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366 | ; IRQ_TYPE_PIC equ 1 |
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367 | ; IRQ_TYPE_APIC equ 2 |
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368 | |||
369 | ; uglobal |
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370 | ; irq_type_to_set rd 1 |
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371 | ; irq_types rd IRQ_RESERVE |
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372 | ; endg |
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373 | |||
374 | ; ----------------------------------------- |
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375 | ; End Of Interrupt |
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376 | ; al - IRQ number |
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377 | ; align 16 |
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378 | ; IRQ_EOI: |
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379 | ; movzx eax, al |
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380 | ; cmp dword[irq_types + eax * 4], IRQ_TYPE_APIC |
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381 | ; jne @f |
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382 | ; mov eax, [LAPIC_BASE] |
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383 | ; mov dword [eax + APIC_EOI], 0 ; EOI |
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384 | ; ret |
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385 | ; @@: |
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386 | ; cmp al, 8 |
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387 | ; mov al, 0x20 |
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388 | ; jb @f |
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389 | ; out 0xa0, al |
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390 | ; @@: out 0x20, al |
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391 | ; ret |
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392 | |||
393 | ; align 4 |
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394 | ; proc enable_irq stdcall, irq_line:dword |
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395 | ; cmp dword[irq_type_to_set], IRQ_TYPE_APIC |
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396 | ; jne @f |
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397 | ; stdcall APIC_enable_irq, [irq_line] |
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398 | ; ret |
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399 | ; @@: stdcall PIC_enable_irq, [irq_line] |
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400 | ; ret |
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401 | ; endp |
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402 | |||
403 | ; align 4 |
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404 | ; proc disable_irq stdcall, irq_line:dword |
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405 | ; push eax |
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406 | ; mov eax, [irq_line] |
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407 | ; cmp dword[irq_types + eax * 4], IRQ_TYPE_APIC |
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408 | ; jne @f |
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409 | ; stdcall APIC_disable_irq, eax |
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410 | ; pop eax |
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411 | ; ret |
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412 | ; @@: stdcall PIC_disable_irq, eax |
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413 | ; pop eax |
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414 | ; ret |
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415 | ; endp |
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416 | |||
417 | ; align 4 |
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418 | ; proc PIC_enable_irq stdcall, irq_line:dword |
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419 | ; pusha |
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420 | ; mov ebx, [irq_line] |
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421 | ; mov eax, [irq_types + ebx * 4] |
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422 | ; cmp eax, IRQ_TYPE_DISABLE |
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423 | ; je @f |
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424 | ; cmp eax, IRQ_TYPE_PIC |
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425 | ; je @f |
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426 | ; stdcall disable_irq, ebx |
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427 | ; @@: mov dword[irq_types + ebx * 4], IRQ_TYPE_PIC |
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428 | ; mov edx, 0x21 |
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429 | ; cmp ebx, 8 |
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430 | ; jb @F |
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431 | ; mov edx, 0xA1 |
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432 | ; sub ebx,8 |
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433 | ; @@: in al,dx |
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434 | ; btr eax, ebx |
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435 | ; out dx, al |
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436 | ; popa |
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437 | ; ret |
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438 | ; endp |
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439 | |||
440 | ; align 4 |
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441 | ; proc PIC_disable_irq stdcall, irq_line:dword |
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442 | ; pusha |
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443 | ; mov ebx, [irq_line] |
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444 | ; mov dword[irq_types + ebx * 4], IRQ_TYPE_DISABLE |
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445 | ; mov edx, 0x21 |
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446 | ; cmp ebx, 8 |
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447 | ; jb @F |
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448 | ; mov edx, 0xA1 |
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449 | ; sub ebx,8 |
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450 | ; @@: in al,dx |
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451 | ; bts eax, ebx |
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452 | ; out dx, al |
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453 | ; popa |
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454 | ; ret |
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455 | ; endp |
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456 | |||
457 | ; align 4 |
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458 | ; proc APIC_enable_irq stdcall, irq_line:dword |
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459 | ; pusha |
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460 | ; mov ebx, [irq_line] |
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461 | ; mov eax, [irq_types + ebx * 4] |
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462 | ; cmp eax, IRQ_TYPE_DISABLE |
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463 | ; je @f |
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464 | ; cmp eax, IRQ_TYPE_APIC |
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465 | ; je @f |
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466 | ; stdcall disable_irq, ebx |
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467 | ; @@: mov dword[irq_types + ebx * 4], IRQ_TYPE_APIC |
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468 | ; shl ebx, 1 |
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469 | ; add ebx, 0x10 |
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470 | ; mov eax, ebx |
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471 | ; call IOAPIC_read |
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472 | ; and eax, 0xfffeffff ; bit 16 |
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473 | ; xchg eax, ebx |
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474 | ; call IOAPIC_write |
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475 | ; popa |
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476 | ; ret |
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477 | ; endp |
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478 | |||
479 | ; align 4 |
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480 | ; proc APIC_disable_irq stdcall, irq_line:dword |
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481 | ; pusha |
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482 | ; mov ebx, [irq_line] |
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483 | ; mov dword[irq_types + ebx * 4], IRQ_TYPE_DISABLE |
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484 | ; shl ebx, 1 |
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485 | ; add ebx, 0x10 |
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486 | ; mov eax, ebx |
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487 | ; call IOAPIC_read |
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488 | ; or eax, 0x10000 |
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489 | ; xchg eax, ebx |
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490 | ; call IOAPIC_write |
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491 | ; popa |
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492 | ; ret |
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493 | ; endp><><<> |