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Rev | Author | Line No. | Line |
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2118 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2011. 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 | |||
2231 | Serge | 8 | |
9 | iglobal |
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10 | IRQ_COUNT dd 24 |
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11 | endg |
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12 | |||
13 | uglobal |
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14 | irq_mode rd 1 |
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15 | IOAPIC_base rd 1 |
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16 | LAPIC_BASE rd 1 |
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17 | endg |
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18 | |||
19 | APIC_ID equ 0x20 |
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20 | APIC_TPR equ 0x80 |
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21 | APIC_EOI equ 0xb0 |
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22 | APIC_LDR equ 0xd0 |
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23 | APIC_DFR equ 0xe0 |
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24 | APIC_SVR equ 0xf0 |
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25 | APIC_ISR equ 0x100 |
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26 | APIC_ESR equ 0x280 |
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27 | APIC_ICRL equ 0x300 |
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28 | APIC_ICRH equ 0x310 |
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29 | APIC_LVT_LINT0 equ 0x350 |
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30 | APIC_LVT_LINT1 equ 0x360 |
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31 | APIC_LVT_err equ 0x370 |
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32 | |||
33 | ; APIC timer |
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34 | APIC_LVT_timer equ 0x320 |
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35 | APIC_timer_div equ 0x3e0 |
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36 | APIC_timer_init equ 0x380 |
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37 | APIC_timer_cur equ 0x390 |
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38 | ; IOAPIC |
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39 | IOAPIC_ID equ 0x0 |
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40 | IOAPIC_VER equ 0x1 |
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41 | IOAPIC_ARB equ 0x2 |
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42 | IOAPIC_REDTBL equ 0x10 |
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43 | |||
2118 | serge | 44 | align 4 |
2231 | Serge | 45 | APIC_init: |
46 | mov [irq_mode], IRQ_PIC |
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2118 | serge | 47 | |
2231 | Serge | 48 | cmp [acpi_ioapic_base], 0 |
49 | jz .no_apic |
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50 | |||
51 | cmp [acpi_lapic_base], 0 |
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52 | jz .no_apic |
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53 | |||
54 | stdcall load_file, dev_data_path |
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55 | test eax, eax |
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56 | jz .no_apic |
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57 | |||
58 | mov [acpi_dev_data], eax |
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59 | mov [acpi_dev_size], ebx |
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60 | |||
61 | call IRQ_mask_all |
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62 | |||
63 | ; IOAPIC init |
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64 | stdcall map_io_mem, [acpi_ioapic_base], 0x20, PG_SW |
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65 | mov [IOAPIC_base], eax |
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66 | |||
67 | mov eax, IOAPIC_VER |
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68 | call IOAPIC_read |
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69 | shr eax, 16 |
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70 | inc al |
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71 | movzx eax, al |
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72 | cmp al, IRQ_RESERVED |
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73 | jbe @f |
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74 | |||
75 | mov al, IRQ_RESERVED |
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76 | @@: |
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77 | mov [IRQ_COUNT], eax |
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78 | |||
79 | ; Reroute IOAPIC & mask all interrupts |
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80 | xor ecx, ecx |
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81 | mov eax, IOAPIC_REDTBL |
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82 | @@: |
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83 | mov ebx, eax |
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84 | call IOAPIC_read |
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85 | mov ah, 0x09 ; Delivery Mode: Lowest Priority, Destination Mode: Logical |
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86 | mov al, cl |
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87 | add al, 0x20 ; vector |
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88 | or eax, 0x10000 ; Mask Interrupt |
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89 | cmp ecx, 16 |
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90 | jb .set |
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91 | |||
92 | or eax, 0xa000 ;<<< level-triggered active-low for IRQ16+ |
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93 | .set: |
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94 | xchg eax, ebx |
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95 | call IOAPIC_write |
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96 | inc eax |
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97 | mov ebx, eax |
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98 | call IOAPIC_read |
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99 | or eax, 0xff000000 ; Destination Field |
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100 | xchg eax, ebx |
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101 | call IOAPIC_write |
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102 | inc eax |
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103 | inc ecx |
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104 | cmp ecx, [IRQ_COUNT] |
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105 | jb @b |
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106 | |||
107 | call LAPIC_init |
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108 | |||
109 | mov [irq_mode], IRQ_APIC |
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110 | |||
111 | mov al, 0x70 |
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112 | out 0x22, al |
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113 | mov al, 1 |
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114 | out 0x23, al |
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115 | |||
116 | call pci_irq_fixup |
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117 | .no_apic: |
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118 | |||
119 | ret |
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120 | |||
121 | ;=========================================================== |
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122 | align 4 |
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123 | LAPIC_init: |
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124 | ; Check MSR support |
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125 | ;.... |
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126 | ; Get LAPIC base address |
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127 | ; mov ecx, 0x1b |
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128 | ; rdmsr ; it may be replaced to |
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129 | ; and ax, 0xf000 ; mov eax, 0xfee00000 |
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130 | |||
131 | stdcall map_io_mem, [acpi_lapic_base], 0x1000, PG_SW |
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132 | mov [LAPIC_BASE], eax |
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133 | mov esi, eax |
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134 | |||
135 | ; Program Destination Format Register for Flat mode. |
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136 | mov eax, [esi + APIC_DFR] |
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137 | or eax, 0xf0000000 |
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138 | mov [esi + APIC_DFR], eax |
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139 | |||
140 | ; Program Logical Destination Register. |
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141 | mov eax, [esi + APIC_LDR] |
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142 | ;and eax, 0xff000000 |
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143 | and eax, 0x00ffffff |
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144 | or eax, 0x01000000 ;!!!!!!!!!!!! |
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145 | mov [esi + APIC_LDR], eax |
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146 | |||
147 | ; Task Priority Register initialization. |
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148 | mov eax, [esi + APIC_TPR] |
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149 | and eax, 0xffffff00 |
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150 | mov [esi + APIC_TPR], eax |
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151 | |||
152 | ; Flush the queue |
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153 | mov edx, 0 |
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154 | .nxt2: |
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155 | mov ecx, 32 |
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156 | mov eax, [esi + APIC_ISR + edx] |
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157 | .nxt: |
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158 | shr eax, 1 |
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159 | jnc @f |
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160 | mov dword [esi + APIC_EOI], 0 ; EOI |
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161 | @@: |
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162 | loop .nxt |
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163 | |||
164 | add edx, 0x10 |
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165 | cmp edx, 0x170 |
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166 | jbe .nxt2 |
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167 | |||
168 | ; Spurious-Interrupt Vector Register initialization. |
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169 | mov eax, [esi + APIC_SVR] |
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170 | or eax, 0x1ff |
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171 | and eax, 0xfffffdff |
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172 | mov [esi + APIC_SVR], eax |
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173 | |||
174 | ; Initialize LVT LINT0 register. (INTR) |
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175 | mov eax, 0x00700 |
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176 | ; mov eax, 0x10700 |
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177 | mov [esi + APIC_LVT_LINT0], eax |
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178 | |||
179 | ; Initialize LVT LINT1 register. (NMI) |
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180 | mov eax, 0x00400 |
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181 | mov [esi + APIC_LVT_LINT1], eax |
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182 | |||
183 | ; Initialize LVT Error register. |
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184 | mov eax, [esi + APIC_LVT_err] |
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185 | or eax, 0x10000 ; bit 16 |
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186 | mov [esi + APIC_LVT_err], eax |
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187 | |||
188 | ; LAPIC timer |
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189 | ; pre init |
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190 | mov dword[esi + APIC_timer_div], 1011b ; 1 |
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191 | mov dword[esi + APIC_timer_init], 0xffffffff ; max val |
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192 | push esi |
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193 | mov esi, 640 ; wait 0.64 sec |
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194 | call delay_ms |
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195 | pop esi |
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196 | mov eax, [esi + APIC_timer_cur] ; read current tick couner |
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197 | xor eax, 0xffffffff ; eax = 0xffffffff - eax |
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198 | shr eax, 6 ; eax /= 64; APIC ticks per 0.01 sec |
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199 | |||
200 | ; Start (every 0.01 sec) |
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201 | mov dword[esi + APIC_LVT_timer], 0x30020 ; periodic int 0x20 |
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202 | mov dword[esi + APIC_timer_init], eax |
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203 | ret |
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204 | |||
205 | ;=========================================================== |
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206 | ; IOAPIC implementation |
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207 | align 4 |
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208 | IOAPIC_read: |
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209 | ; in : EAX - IOAPIC register |
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210 | ; out: EAX - readed value |
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211 | push esi |
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212 | mov esi, [IOAPIC_base] |
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213 | mov [esi], eax |
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214 | mov eax, [esi + 0x10] |
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215 | pop esi |
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216 | ret |
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217 | |||
218 | align 4 |
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219 | IOAPIC_write: |
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220 | ; in : EAX - IOAPIC register |
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221 | ; EBX - value |
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222 | ; out: none |
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223 | push esi |
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224 | mov esi, [IOAPIC_base] |
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225 | mov [esi], eax |
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226 | mov [esi + 0x10], ebx |
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227 | pop esi |
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228 | ret |
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229 | ;=========================================================== |
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230 | ; Remap all IRQ to 0x20+ Vectors |
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231 | ; IRQ0 to vector 0x20, IRQ1 to vector 0x21.... |
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232 | align 4 |
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233 | PIC_init: |
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2118 | serge | 234 | cli |
235 | mov al,0x11 ; icw4, edge triggered |
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236 | out 0x20,al |
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237 | out 0xA0,al |
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238 | |||
239 | mov al,0x20 ; generate 0x20 + |
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240 | out 0x21,al |
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241 | mov al,0x28 ; generate 0x28 + |
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242 | out 0xA1,al |
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243 | |||
244 | mov al,0x04 ; slave at irq2 |
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245 | out 0x21,al |
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246 | mov al,0x02 ; at irq9 |
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247 | out 0xA1,al |
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248 | |||
249 | mov al,0x01 ; 8086 mode |
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250 | out 0x21,al |
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251 | out 0xA1,al |
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252 | |||
2231 | Serge | 253 | call IRQ_mask_all |
254 | ; mov dword[irq_type_to_set], IRQ_TYPE_PIC |
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255 | ret |
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2118 | serge | 256 | |
2231 | Serge | 257 | ; ----------------------------------------- |
258 | ; TIMER SET TO 1/100 S |
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259 | align 4 |
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260 | PIT_init: |
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261 | mov al,0x34 ; set to 100Hz |
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262 | out 0x43,al |
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263 | mov al,0x9b ; lsb 1193180 / 1193 |
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264 | out 0x40,al |
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265 | mov al,0x2e ; msb |
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266 | out 0x40,al |
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2118 | serge | 267 | ret |
268 | |||
2231 | Serge | 269 | ; ----------------------------------------- |
270 | align 4 |
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271 | unmask_timer: |
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272 | cmp [irq_mode], IRQ_APIC |
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273 | je @f |
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2118 | serge | 274 | |
2231 | Serge | 275 | stdcall enable_irq, 0 |
276 | ret |
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277 | @@: |
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278 | ; use PIT |
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279 | ; in some systems PIT no connected to IOAPIC |
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280 | ; mov eax, 0x14 |
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281 | ; call IOAPIC_read |
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282 | ; mov ah, 0x09 ; Delivery Mode: Lowest Priority, Destination Mode: Logical |
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283 | ; mov al, 0x20 |
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284 | ; or eax, 0x10000 ; Mask Interrupt |
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285 | ; mov ebx, eax |
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286 | ; mov eax, 0x14 |
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287 | ; call IOAPIC_write |
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288 | ; stdcall enable_irq, 2 |
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289 | ; ret |
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290 | |||
291 | ; use LAPIC timer |
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292 | mov esi, [LAPIC_BASE] |
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293 | mov eax, [esi + APIC_LVT_timer] |
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294 | and eax, 0xfffeffff |
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295 | mov [esi + APIC_LVT_timer], eax |
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296 | ret |
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297 | |||
298 | ; ----------------------------------------- |
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299 | ; Disable all IRQ |
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2118 | serge | 300 | align 4 |
2231 | Serge | 301 | IRQ_mask_all: |
302 | cmp [irq_mode], IRQ_APIC |
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303 | je .APIC |
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304 | |||
305 | mov al, 0xFF |
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306 | out 0x21, al |
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307 | out 0xA1, al |
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308 | mov ecx,0x1000 |
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309 | ret |
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310 | .APIC: |
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311 | mov ecx, [IRQ_COUNT] |
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312 | mov eax, 0x10 |
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313 | @@: |
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314 | mov ebx, eax |
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315 | call IOAPIC_read |
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316 | or eax, 0x10000 ; bit 16 |
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317 | xchg eax, ebx |
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318 | call IOAPIC_write |
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319 | inc eax |
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320 | inc eax |
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321 | loop @b |
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322 | ret |
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323 | |||
324 | ; ----------------------------------------- |
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325 | ; End Of Interrupt |
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326 | ; cl - IRQ number |
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327 | align 4 |
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328 | irq_eoi: ; __fastcall |
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329 | cmp [irq_mode], IRQ_APIC |
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330 | je .APIC |
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331 | |||
332 | cmp cl, 8 |
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333 | mov al, 0x20 |
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334 | jb @f |
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335 | out 0xa0, al |
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336 | @@: |
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337 | out 0x20, al |
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338 | ret |
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339 | |||
340 | .APIC: |
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341 | mov eax, [LAPIC_BASE] |
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342 | mov dword [eax + APIC_EOI], 0 ; EOI |
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343 | ret |
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344 | |||
345 | ; ----------------------------------------- |
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346 | ; from dll.inc |
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347 | align 4 |
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348 | proc enable_irq stdcall, irq_line:dword |
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349 | mov ebx, [irq_line] |
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350 | cmp [irq_mode], IRQ_APIC |
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351 | je .APIC |
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352 | |||
2118 | serge | 353 | mov edx, 0x21 |
354 | cmp ebx, 8 |
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355 | jb @F |
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2231 | Serge | 356 | |
2118 | serge | 357 | mov edx, 0xA1 |
358 | sub ebx,8 |
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359 | @@: |
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360 | in al,dx |
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361 | btr eax, ebx |
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362 | out dx, al |
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2231 | Serge | 363 | ret |
364 | .APIC: |
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365 | shl ebx, 1 |
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366 | add ebx, 0x10 |
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367 | mov eax, ebx |
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368 | call IOAPIC_read |
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369 | and eax, 0xfffeffff ; bit 16 |
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370 | xchg eax, ebx |
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371 | call IOAPIC_write |
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372 | ret |
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373 | endp |
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2118 | serge | 374 | |
2231 | Serge | 375 | align 4 |
376 | pci_irq_fixup: |
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2118 | serge | 377 | |
2231 | Serge | 378 | push ebp |
379 | |||
380 | mov esi, [acpi_dev_data] |
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381 | mov ebx, [acpi_dev_size] |
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382 | |||
383 | lea edi, [esi+ebx] |
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384 | |||
385 | .iterate: |
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386 | |||
387 | cmp esi, edi |
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388 | jae .done |
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389 | |||
390 | mov eax, [esi] |
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391 | |||
392 | cmp eax, -1 |
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393 | je .done |
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394 | |||
395 | movzx ebx, al |
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396 | movzx ebp, ah |
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397 | |||
398 | stdcall pci_read32, ebp, ebx, 0 |
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399 | |||
400 | cmp eax, [esi+4] |
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401 | jne .skip |
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402 | |||
403 | mov eax, [esi+8] |
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404 | stdcall pci_write8, ebp, ebx, 0x3C, eax |
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405 | .skip: |
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406 | add esi, 16 |
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407 | jmp .iterate |
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408 | |||
409 | .done: |
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410 | .fail: |
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411 | pop ebp |
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412 | ret><><<> |
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413 |