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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
586 | serge | 2 | ;; ;; |
431 | serge | 3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;; ;; |
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586 | serge | 7 | ;; PCI32.INC ;; |
8 | ;; ;; |
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9 | ;; 32 bit PCI driver code ;; |
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10 | ;; ;; |
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11 | ;; Version 0.3 April 9, 2007 ;; |
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12 | ;; Version 0.2 December 21st, 2002 ;; |
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13 | ;; ;; |
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14 | ;; Author: Victor Prodan, victorprodan@yahoo.com ;; |
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15 | ;; Mihailov Ilia, ghost.nsk@gmail.com ;; |
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16 | ;; Credits: ;; |
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17 | ;; Ralf Brown ;; |
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18 | ;; Mike Hibbett, mikeh@oceanfree.net ;; |
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19 | ;; ;; |
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20 | ;; See file COPYING for details ;; |
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21 | ;; ;; |
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431 | serge | 22 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 23 | |
750 | victor | 24 | $Revision: 1354 $ |
1 | ha | 25 | |
26 | ;*************************************************************************** |
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27 | ; Function |
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28 | ; pci_api: |
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29 | ; |
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30 | ; Description |
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31 | ; entry point for system PCI calls |
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32 | ;*************************************************************************** |
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33 | |||
34 | align 4 |
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35 | |||
36 | pci_api: |
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37 | |||
1348 | art_zh | 38 | cmp [pci_access_enabled],1 |
39 | jne no_pci_access_for_applications |
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1 | ha | 40 | |
1348 | art_zh | 41 | or al,al |
42 | jnz pci_fn_1 |
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43 | ; PCI function 0: get pci version (AH.AL) |
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44 | movzx eax,word [BOOT_VAR+0x9022] |
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45 | ret |
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1 | ha | 46 | |
47 | pci_fn_1: |
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1348 | art_zh | 48 | cmp al,1 |
49 | jnz pci_fn_2 |
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1 | ha | 50 | |
1348 | art_zh | 51 | ; PCI function 1: get last bus in AL |
52 | mov al,[BOOT_VAR+0x9021] |
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53 | ret |
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1 | ha | 54 | |
55 | pci_fn_2: |
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1348 | art_zh | 56 | cmp al,2 |
57 | jne pci_fn_3 |
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58 | ; PCI function 2: get pci access mechanism |
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59 | mov al,[BOOT_VAR+0x9020] |
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60 | ret |
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1 | ha | 61 | pci_fn_3: |
62 | |||
1348 | art_zh | 63 | cmp al,4 |
64 | jz pci_read_reg ;byte |
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65 | cmp al,5 |
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66 | jz pci_read_reg ;word |
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67 | cmp al,6 |
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68 | jz pci_read_reg ;dword |
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1 | ha | 69 | |
1348 | art_zh | 70 | cmp al,8 |
71 | jz pci_write_reg ;byte |
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72 | cmp al,9 |
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73 | jz pci_write_reg ;word |
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74 | cmp al,10 |
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75 | jz pci_write_reg ;dword |
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1 | ha | 76 | |
1354 | diamond | 77 | if defined mmio_pci_addr |
1348 | art_zh | 78 | cmp al,11 ; <<< user-level MMIO functions <<< NEW! |
79 | jz pci_mmio_init |
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80 | cmp al,12 |
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81 | jz pci_mmio_map |
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82 | cmp al,13 |
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83 | jz pci_mmio_unmap |
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1354 | diamond | 84 | end if |
1348 | art_zh | 85 | |
1 | ha | 86 | no_pci_access_for_applications: |
87 | |||
1348 | art_zh | 88 | mov eax,-1 |
1 | ha | 89 | |
1348 | art_zh | 90 | ret |
1 | ha | 91 | |
92 | ;*************************************************************************** |
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93 | ; Function |
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94 | ; pci_make_config_cmd |
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95 | ; |
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96 | ; Description |
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97 | ; creates a command dword for use with the PCI bus |
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98 | ; bus # in ah |
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99 | ; device+func in bh (dddddfff) |
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100 | ; register in bl |
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101 | ; |
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102 | ; command dword returned in eax ( 10000000 bbbbbbbb dddddfff rrrrrr00 ) |
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103 | ;*************************************************************************** |
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104 | |||
105 | align 4 |
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106 | |||
107 | pci_make_config_cmd: |
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1348 | art_zh | 108 | shl eax,8 ; move bus to bits 16-23 |
109 | mov ax,bx ; combine all |
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1 | ha | 110 | and eax,0xffffff |
1348 | art_zh | 111 | or eax,0x80000000 |
1 | ha | 112 | ret |
113 | |||
114 | ;*************************************************************************** |
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115 | ; Function |
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116 | ; pci_read_reg: |
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117 | ; |
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118 | ; Description |
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119 | ; read a register from the PCI config space into EAX/AX/AL |
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120 | ; IN: ah=bus,device+func=bh,register address=bl |
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121 | ; number of bytes to read (1,2,4) coded into AL, bits 0-1 |
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586 | serge | 122 | ; (0 - byte, 1 - word, 2 - dword) |
1 | ha | 123 | ;*************************************************************************** |
124 | |||
125 | align 4 |
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126 | |||
127 | pci_read_reg: |
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1348 | art_zh | 128 | cmp byte [BOOT_VAR+0x9020],2 ;what mechanism will we use? |
129 | je pci_read_reg_2 |
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1 | ha | 130 | |
1348 | art_zh | 131 | ; mechanism 1 |
132 | push esi ; save register size into ESI |
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133 | mov esi,eax |
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134 | and esi,3 |
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1 | ha | 135 | |
1348 | art_zh | 136 | call pci_make_config_cmd |
137 | mov ebx,eax |
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138 | ; get current state |
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139 | mov dx,0xcf8 |
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140 | in eax, dx |
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141 | push eax |
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142 | ; set up addressing to config data |
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143 | mov eax,ebx |
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144 | and al,0xfc ; make address dword-aligned |
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145 | out dx,eax |
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146 | ; get requested DWORD of config data |
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147 | mov dl,0xfc |
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148 | and bl,3 |
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149 | or dl,bl ; add to port address first 2 bits of register address |
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1 | ha | 150 | |
1348 | art_zh | 151 | or esi,esi |
152 | jz pci_read_byte1 |
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153 | cmp esi,1 |
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154 | jz pci_read_word1 |
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155 | cmp esi,2 |
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156 | jz pci_read_dword1 |
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157 | jmp pci_fin_read1 |
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1 | ha | 158 | |
159 | pci_read_byte1: |
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1348 | art_zh | 160 | in al,dx |
161 | jmp pci_fin_read1 |
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1 | ha | 162 | pci_read_word1: |
1348 | art_zh | 163 | in ax,dx |
164 | jmp pci_fin_read1 |
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1 | ha | 165 | pci_read_dword1: |
1348 | art_zh | 166 | in eax,dx |
167 | jmp pci_fin_read1 |
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1 | ha | 168 | pci_fin_read1: |
1348 | art_zh | 169 | ; restore configuration control |
170 | xchg eax,[esp] |
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171 | mov dx,0xcf8 |
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172 | out dx,eax |
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1 | ha | 173 | |
1348 | art_zh | 174 | pop eax |
175 | pop esi |
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176 | ret |
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1 | ha | 177 | pci_read_reg_2: |
178 | |||
1348 | art_zh | 179 | test bh,128 ;mech#2 only supports 16 devices per bus |
180 | jnz pci_read_reg_err |
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1 | ha | 181 | |
1348 | art_zh | 182 | push esi ; save register size into ESI |
183 | mov esi,eax |
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184 | and esi,3 |
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1 | ha | 185 | |
1348 | art_zh | 186 | push eax |
187 | ;store current state of config space |
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188 | mov dx,0xcf8 |
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189 | in al,dx |
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190 | mov ah,al |
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191 | mov dl,0xfa |
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192 | in al,dx |
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1 | ha | 193 | |
1348 | art_zh | 194 | xchg eax,[esp] |
195 | ; out 0xcfa,bus |
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196 | mov al,ah |
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197 | out dx,al |
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198 | ; out 0xcf8,0x80 |
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199 | mov dl,0xf8 |
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200 | mov al,0x80 |
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201 | out dx,al |
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202 | ; compute addr |
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203 | shr bh,3 ; func is ignored in mechanism 2 |
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204 | or bh,0xc0 |
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205 | mov dx,bx |
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1 | ha | 206 | |
1348 | art_zh | 207 | or esi,esi |
208 | jz pci_read_byte2 |
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209 | cmp esi,1 |
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210 | jz pci_read_word2 |
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211 | cmp esi,2 |
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212 | jz pci_read_dword2 |
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213 | jmp pci_fin_read2 |
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1 | ha | 214 | |
215 | pci_read_byte2: |
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1348 | art_zh | 216 | in al,dx |
217 | jmp pci_fin_read2 |
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1 | ha | 218 | pci_read_word2: |
1348 | art_zh | 219 | in ax,dx |
220 | jmp pci_fin_read2 |
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1 | ha | 221 | pci_read_dword2: |
1348 | art_zh | 222 | in eax,dx |
1 | ha | 223 | ; jmp pci_fin_read2 |
224 | pci_fin_read2: |
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225 | |||
1348 | art_zh | 226 | ; restore configuration space |
227 | xchg eax,[esp] |
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228 | mov dx,0xcfa |
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229 | out dx,al |
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230 | mov dl,0xf8 |
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231 | mov al,ah |
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232 | out dx,al |
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1 | ha | 233 | |
1348 | art_zh | 234 | pop eax |
235 | pop esi |
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236 | ret |
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1 | ha | 237 | |
238 | pci_read_reg_err: |
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1348 | art_zh | 239 | xor eax,eax |
240 | dec eax |
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241 | ret |
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1 | ha | 242 | |
243 | |||
244 | ;*************************************************************************** |
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245 | ; Function |
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246 | ; pci_write_reg: |
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247 | ; |
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248 | ; Description |
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249 | ; write a register from ECX/CX/CL into the PCI config space |
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250 | ; IN: ah=bus,device+func=bh,register address (dword aligned)=bl, |
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251 | ; value to write in ecx |
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252 | ; number of bytes to write (1,2,4) coded into AL, bits 0-1 |
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586 | serge | 253 | ; (0 - byte, 1 - word, 2 - dword) |
1 | ha | 254 | ;*************************************************************************** |
255 | |||
256 | align 4 |
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257 | |||
258 | pci_write_reg: |
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1348 | art_zh | 259 | cmp byte [BOOT_VAR+0x9020],2 ;what mechanism will we use? |
260 | je pci_write_reg_2 |
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1 | ha | 261 | |
1348 | art_zh | 262 | ; mechanism 1 |
263 | push esi ; save register size into ESI |
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264 | mov esi,eax |
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265 | and esi,3 |
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1 | ha | 266 | |
1348 | art_zh | 267 | call pci_make_config_cmd |
268 | mov ebx,eax |
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269 | ; get current state into ecx |
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270 | mov dx,0xcf8 |
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271 | in eax, dx |
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272 | push eax |
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273 | ; set up addressing to config data |
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274 | mov eax,ebx |
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275 | and al,0xfc ; make address dword-aligned |
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276 | out dx,eax |
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277 | ; write DWORD of config data |
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278 | mov dl,0xfc |
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279 | and bl,3 |
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280 | or dl,bl |
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281 | mov eax,ecx |
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1 | ha | 282 | |
1348 | art_zh | 283 | or esi,esi |
284 | jz pci_write_byte1 |
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285 | cmp esi,1 |
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286 | jz pci_write_word1 |
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287 | cmp esi,2 |
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288 | jz pci_write_dword1 |
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289 | jmp pci_fin_write1 |
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1 | ha | 290 | |
291 | pci_write_byte1: |
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1348 | art_zh | 292 | out dx,al |
293 | jmp pci_fin_write1 |
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1 | ha | 294 | pci_write_word1: |
1348 | art_zh | 295 | out dx,ax |
296 | jmp pci_fin_write1 |
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1 | ha | 297 | pci_write_dword1: |
1348 | art_zh | 298 | out dx,eax |
299 | jmp pci_fin_write1 |
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1 | ha | 300 | pci_fin_write1: |
301 | |||
1348 | art_zh | 302 | ; restore configuration control |
303 | pop eax |
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304 | mov dl,0xf8 |
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305 | out dx,eax |
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1 | ha | 306 | |
1348 | art_zh | 307 | xor eax,eax |
308 | pop esi |
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1 | ha | 309 | |
1348 | art_zh | 310 | ret |
1 | ha | 311 | pci_write_reg_2: |
312 | |||
1348 | art_zh | 313 | test bh,128 ;mech#2 only supports 16 devices per bus |
314 | jnz pci_write_reg_err |
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1 | ha | 315 | |
316 | |||
1348 | art_zh | 317 | push esi ; save register size into ESI |
318 | mov esi,eax |
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319 | and esi,3 |
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1 | ha | 320 | |
1348 | art_zh | 321 | push eax |
322 | ;store current state of config space |
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323 | mov dx,0xcf8 |
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324 | in al,dx |
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325 | mov ah,al |
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326 | mov dl,0xfa |
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327 | in al,dx |
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328 | xchg eax,[esp] |
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329 | ; out 0xcfa,bus |
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330 | mov al,ah |
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331 | out dx,al |
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332 | ; out 0xcf8,0x80 |
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333 | mov dl,0xf8 |
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334 | mov al,0x80 |
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335 | out dx,al |
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336 | ; compute addr |
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337 | shr bh,3 ; func is ignored in mechanism 2 |
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338 | or bh,0xc0 |
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339 | mov dx,bx |
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340 | ; write register |
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341 | mov eax,ecx |
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1 | ha | 342 | |
1348 | art_zh | 343 | or esi,esi |
344 | jz pci_write_byte2 |
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345 | cmp esi,1 |
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346 | jz pci_write_word2 |
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347 | cmp esi,2 |
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348 | jz pci_write_dword2 |
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349 | jmp pci_fin_write2 |
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1 | ha | 350 | |
351 | pci_write_byte2: |
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1348 | art_zh | 352 | out dx,al |
353 | jmp pci_fin_write2 |
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1 | ha | 354 | pci_write_word2: |
1348 | art_zh | 355 | out dx,ax |
356 | jmp pci_fin_write2 |
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1 | ha | 357 | pci_write_dword2: |
1348 | art_zh | 358 | out dx,eax |
359 | jmp pci_fin_write2 |
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1 | ha | 360 | pci_fin_write2: |
1348 | art_zh | 361 | ; restore configuration space |
362 | pop eax |
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363 | mov dx,0xcfa |
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364 | out dx,al |
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365 | mov dl,0xf8 |
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366 | mov al,ah |
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367 | out dx,al |
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1 | ha | 368 | |
1348 | art_zh | 369 | xor eax,eax |
370 | pop esi |
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371 | ret |
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1 | ha | 372 | |
373 | pci_write_reg_err: |
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1348 | art_zh | 374 | xor eax,eax |
375 | dec eax |
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376 | ret |
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586 | serge | 377 | |
1354 | diamond | 378 | if defined mmio_pci_addr |
1348 | art_zh | 379 | ;*************************************************************************** |
380 | ; Function |
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381 | ; pci_mmio_init ; NEW! |
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382 | ; |
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383 | ; Description |
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384 | ; IN: bx = device's PCI bus address (bbbbbbbbdddddfff) |
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385 | ; returns ax = user heap space available (bytes) |
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386 | ; Error codes |
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387 | ; eax = -1 : PCI user access blocked, |
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388 | ; eax = -2 : device not registered for uMMIO service |
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389 | ; eax = -3 : user heap initialization failure |
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390 | ;*************************************************************************** |
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391 | pci_mmio_init: |
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1354 | diamond | 392 | cmp bx, mmio_pci_addr ; must be set in kernel/data32.inc |
1348 | art_zh | 393 | jz @f |
394 | mov eax,-2 |
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395 | ret |
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396 | @@: |
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397 | call init_heap ; (if not initialized yet) |
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398 | or eax,eax |
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399 | jz @f |
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400 | ret |
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401 | @@: |
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402 | mov eax,-3 |
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403 | ret |
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404 | |||
405 | |||
406 | ;*************************************************************************** |
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407 | ; Function |
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408 | ; pci_mmio_map ; NEW! |
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409 | ; |
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410 | ; Description |
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411 | ; maps a block of PCI memory to user-accessible linear address |
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412 | ; |
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413 | ; WARNING! This VERY EXPERIMENTAL service is for one chosen PCI device only! |
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414 | ; The target device address should be set in kernel var mmio_pci_addr |
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415 | ; |
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416 | ; IN: ah = BAR#; |
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417 | ; IN: ebx = block size (bytes); |
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418 | ; IN: ecx = offset in MMIO block (in 4K-pages, to avoid misaligned pages); |
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419 | ; |
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420 | ; Returns eax = MMIO block's linear address in the userspace (if no error) |
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421 | ; |
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422 | ; |
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423 | ; Error codes |
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424 | ; eax = -1 : user access to PCI blocked, |
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425 | ; eax = -2 : an invalid BAR register referred |
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426 | ; eax = -3 : no i/o space on that BAR |
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427 | ; eax = -4 : a port i/o BAR register referred |
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428 | ; eax = -5 : dynamic userspace allocation problem |
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429 | ;*************************************************************************** |
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430 | |||
431 | pci_mmio_map: |
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432 | and edx,0x0ffff |
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433 | cmp ah,6 |
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1353 | art_zh | 434 | jc .bar_0_5 |
435 | jz .bar_rom |
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1348 | art_zh | 436 | mov eax,-2 |
437 | ret |
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1353 | art_zh | 438 | .bar_rom: |
439 | mov ah, 8 ; bar6 = Expansion ROM base address |
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440 | .bar_0_5: |
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1348 | art_zh | 441 | push ecx |
442 | add ebx, 4095 |
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443 | and ebx,-4096 |
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444 | push ebx |
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1353 | art_zh | 445 | mov bl, ah ; bl = BAR# (0..5), however bl=8 for BAR6 |
1348 | art_zh | 446 | shl bl, 1 |
447 | shl bl, 1 |
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1353 | art_zh | 448 | add bl, 0x10 ; now bl = BAR offset in PCI config. space |
1354 | diamond | 449 | mov ax, mmio_pci_addr |
1348 | art_zh | 450 | mov bh, al ; bh = dddddfff |
451 | mov al, 2 ; al : DW to read |
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452 | call pci_read_reg |
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453 | or eax, eax |
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454 | jnz @f |
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455 | mov eax,-3 ; empty I/O space |
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456 | jmp mmio_ret_fail |
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457 | @@: |
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458 | test eax, 1 |
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459 | jz @f |
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460 | mov eax,-4 ; damned ports (not MMIO space) |
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461 | jmp mmio_ret_fail |
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462 | @@: |
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463 | pop ecx ; ecx = block size, bytes (expanded to whole page) |
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464 | mov ebx, ecx ; user_alloc destroys eax, ecx, edx, but saves ebx |
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465 | push eax ; store MMIO physical address + keep 2DWords in the stack |
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466 | stdcall user_alloc, ecx |
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467 | or eax, eax |
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468 | jnz mmio_map_over |
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469 | mov eax,-5 ; problem with page allocation |
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470 | |||
471 | mmio_ret_fail: |
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472 | pop ecx |
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473 | pop edx |
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474 | ret |
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475 | |||
476 | mmio_map_over: |
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477 | mov ecx, ebx ; ecx = size (bytes, expanded to whole page) |
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478 | shr ecx, 12 ; ecx = number of pages |
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479 | mov ebx, eax ; ebx = linear address |
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480 | pop eax ; eax = MMIO start |
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481 | pop edx ; edx = MMIO shift (pages) |
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482 | shl edx, 12 ; edx = MMIO shift (bytes) |
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483 | add eax, edx ; eax = uMMIO physical address |
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484 | or eax, PG_SHARED |
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485 | or eax, PG_UW |
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486 | or eax, PG_NOCACHE |
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487 | mov edi, ebx |
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488 | call commit_pages |
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489 | mov eax, edi |
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490 | ret |
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491 | |||
492 | ;*************************************************************************** |
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493 | ; Function |
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494 | ; pci_mmio_unmap_page ; NEW! |
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495 | ; |
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496 | ; Description |
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497 | ; unmaps the linear space previously tied to a PCI memory block |
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498 | ; |
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499 | ; IN: ebx = linear address of space previously allocated by pci_mmio_map |
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500 | ; returns eax = 1 if successfully unmapped |
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501 | ; |
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502 | ; Error codes |
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503 | ; eax = -1 if no user PCI access allowed, |
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504 | ; eax = 0 if unmapping failed |
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505 | ;*************************************************************************** |
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506 | |||
507 | pci_mmio_unmap: |
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508 | stdcall user_free, ebx |
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509 | ret |
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510 | |||
1354 | diamond | 511 | end if |
1348 | art_zh | 512 | |
586 | serge | 513 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
514 | |||
515 | ; VendID (2), DevID (2), Revision = 0 (1), Class Code (3), FNum (1), Bus (1) |
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516 | pci_emu_dat: times 30*10 db 0 |
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517 | |||
518 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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519 | align 4 |
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520 | sys_pcibios: |
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521 | xchg ebx, eax |
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522 | xchg ecx, eax |
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523 | xchg edx, eax |
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524 | xchg esi, eax |
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1348 | art_zh | 525 | xchg edi, eax |
594 | diamond | 526 | cmp [pci_access_enabled], 1 |
1348 | art_zh | 527 | jne .unsupported_func |
528 | cmp [pci_bios_entry], 0 |
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594 | diamond | 529 | jz .emulate_bios |
586 | serge | 530 | |
1348 | art_zh | 531 | push ds |
532 | mov ax, pci_data_sel |
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533 | mov ds, ax |
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534 | mov eax, ebp |
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535 | mov ah, 0B1h |
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536 | call pword [cs:pci_bios_entry] |
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537 | pop ds |
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586 | serge | 538 | |
539 | jmp .return |
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540 | ;-=-=-=-=-=-=-=-= |
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541 | .emulate_bios: |
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542 | cmp ebp, 1 ; PCI_FUNCTION_ID |
||
543 | jnz .not_PCI_BIOS_PRESENT |
||
544 | mov edx, 'PCI ' |
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1348 | art_zh | 545 | mov al, [OS_BASE+0x2F0000 + 0x9020] |
546 | mov bx, [OS_BASE+0x2F0000 + 0x9022] |
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547 | mov cl, [OS_BASE+0x2F0000 + 0x9021] |
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548 | xor ah, ah |
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594 | diamond | 549 | jmp .return_abcd |
586 | serge | 550 | |
551 | .not_PCI_BIOS_PRESENT: |
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552 | cmp ebp, 2 ; FIND_PCI_DEVICE |
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553 | jne .not_FIND_PCI_DEVICE |
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594 | diamond | 554 | mov ebx, pci_emu_dat |
555 | ..nxt: cmp [ebx], dx |
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586 | serge | 556 | jne ..no |
594 | diamond | 557 | cmp [ebx + 2], cx |
586 | serge | 558 | jne ..no |
594 | diamond | 559 | dec si |
586 | serge | 560 | jns ..no |
594 | diamond | 561 | mov bx, [ebx + 4] |
1348 | art_zh | 562 | xor ah, ah |
594 | diamond | 563 | jmp .return_ab |
564 | ..no: cmp word[ebx], 0 |
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586 | serge | 565 | je ..dev_not_found |
594 | diamond | 566 | add ebx, 10 |
586 | serge | 567 | jmp ..nxt |
568 | ..dev_not_found: |
||
569 | mov ah, 0x86 ; DEVICE_NOT_FOUND |
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594 | diamond | 570 | jmp .return_a |
586 | serge | 571 | |
572 | .not_FIND_PCI_DEVICE: |
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573 | cmp ebp, 3 ; FIND_PCI_CLASS_CODE |
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574 | jne .not_FIND_PCI_CLASS_CODE |
||
575 | mov esi, pci_emu_dat |
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594 | diamond | 576 | shl ecx, 8 |
1348 | art_zh | 577 | ..nxt2: cmp [esi], ecx |
586 | serge | 578 | jne ..no2 |
579 | mov bx, [esi] |
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1348 | art_zh | 580 | xor ah, ah |
594 | diamond | 581 | jmp .return_ab |
586 | serge | 582 | ..no2: cmp dword[esi], 0 |
594 | diamond | 583 | je ..dev_not_found |
586 | serge | 584 | add esi, 10 |
585 | jmp ..nxt2 |
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586 | |||
587 | .not_FIND_PCI_CLASS_CODE: |
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588 | cmp ebp, 8 ; READ_CONFIG_* |
||
589 | jb .not_READ_CONFIG |
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590 | cmp ebp, 0x0A |
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591 | ja .not_READ_CONFIG |
||
1348 | art_zh | 592 | mov eax, ebp |
593 | mov ah, bh |
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594 | mov edx, edi |
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595 | mov bh, bl |
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596 | mov bl, dl |
||
586 | serge | 597 | call pci_read_reg |
598 | mov ecx, eax |
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599 | xor ah, ah ; SUCCESSFUL |
||
594 | diamond | 600 | jmp .return_abc |
586 | serge | 601 | .not_READ_CONFIG: |
602 | cmp ebp, 0x0B ; WRITE_CONFIG_* |
||
603 | jb .not_WRITE_CONFIG |
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604 | cmp ebp, 0x0D |
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605 | ja .not_WRITE_CONFIG |
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1348 | art_zh | 606 | lea eax, [ebp+1] |
607 | mov ah, bh |
||
608 | mov edx, edi |
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609 | mov bh, bl |
||
610 | mov bl, dl |
||
586 | serge | 611 | call pci_write_reg |
612 | xor ah, ah ; SUCCESSFUL |
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594 | diamond | 613 | jmp .return_abc |
586 | serge | 614 | .not_WRITE_CONFIG: |
615 | .unsupported_func: |
||
616 | mov ah, 0x81 ; FUNC_NOT_SUPPORTED |
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617 | .return:mov dword[esp + 8 ], edi |
||
618 | mov dword[esp + 12], esi |
||
594 | diamond | 619 | .return_abcd: |
586 | serge | 620 | mov dword[esp + 28], edx |
594 | diamond | 621 | .return_abc: |
586 | serge | 622 | mov dword[esp + 32], ecx |
594 | diamond | 623 | .return_ab: |
624 | mov dword[esp + 24], ebx |
||
625 | .return_a: |
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586 | serge | 626 | mov dword[esp + 36], eax |
627 | ret><><<>><><<> |