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| Rev 2900 | Rev 2901 | ||
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| Line 112... | Line 112... | ||
| 112 | proc detect |
112 | proc detect |
| 113 | locals |
113 | locals |
| 114 | last_bus dd ? |
114 | last_bus dd ? |
| 115 | endl |
115 | endl |
| Line -... | Line 116... | ||
| - | 116 | ||
| - | 117 | mov esi, msgSearch |
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| - | 118 | call SysMsgBoardStr |
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| 116 | 119 | ||
| 117 | xor eax, eax |
120 | xor eax, eax |
| 118 | mov [bus], eax |
121 | mov [bus], eax |
| 119 | inc eax |
122 | inc eax |
| 120 | call PciApi ; get last bus |
123 | call PciApi ; get last bus |
| Line 125... | Line 128... | ||
| 125 | .next_bus: |
128 | .next_bus: |
| 126 | and [devfn], 0 |
129 | and [devfn], 0 |
| 127 | .next_dev: |
130 | .next_dev: |
| 128 | stdcall PciRead16, [bus], [devfn], dword 0x0a ; read class/subclass |
131 | stdcall PciRead16, [bus], [devfn], dword 0x0a ; read class/subclass |
| Line -... | Line 132... | ||
| - | 132 | ||
| - | 133 | cmp ax, 0x0300 ; display controller - vga compatable controller |
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| - | 134 | je .found |
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| 129 | 135 | ||
| 130 | cmp ax, 0x0302 ; display controller - 3d controller |
136 | cmp ax, 0x0302 ; display controller - 3d controller |
| Line 131... | Line 137... | ||
| 131 | je .found |
137 | je .found |
| 132 | 138 | ||
| Line 164... | Line 170... | ||
| 164 | jmp .next |
170 | jmp .next |
| Line 165... | Line 171... | ||
| 165 | 171 | ||
| 166 | .got_capabilities_list: |
172 | .got_capabilities_list: |
| 167 | stdcall PciRead8, [bus], [devfn], dword 0x34 ; read capabilities offset |
173 | stdcall PciRead8, [bus], [devfn], dword 0x34 ; read capabilities offset |
| 168 | and eax, 11111100b ; always dword aligned |
174 | and eax, 11111100b ; always dword aligned |
| Line 169... | Line 175... | ||
| 169 | mov esi, eax |
175 | mov edi, eax |
| 170 | 176 | ||
| 171 | .read_capability: |
177 | .read_capability: |
| 172 | stdcall PciRead32, [bus], [devfn], esi ; read capability |
178 | stdcall PciRead32, [bus], [devfn], edi ; read capability |
| 173 | cmp al, 0x02 ; AGP |
179 | cmp al, 0x02 ; AGP |
| 174 | je .got_agp |
180 | je .got_agp |
| 175 | movzx esi, ah ; pointer to next capability |
181 | movzx edi, ah ; pointer to next capability |
| 176 | test esi, esi |
182 | test edi, edi |
| Line 177... | Line 183... | ||
| 177 | jnz .read_capability |
183 | jnz .read_capability |
| 178 | jmp .next |
184 | jmp .next |
| 179 | 185 | ||
| 180 | .got_agp: |
186 | .got_agp: |
| 181 | shl eax, 16 |
187 | shr eax, 16 |
| 182 | mov [revision], al ; high nibble = major revision |
188 | mov [revision], al ; high nibble = major revision |
| 183 | ; low nibble = minor revision |
189 | ; low nibble = minor revision |
| 184 | add esi, 4 |
190 | add edi, 4 |
| Line 185... | Line 191... | ||
| 185 | and al, 0xf0 |
191 | and al, 0xf0 |
| - | 192 | cmp al, 0x30 |
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| - | 193 | je .agp_3 |
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| - | 194 | ||
| 186 | cmp al, 0x30 |
195 | .agp_2: |
| - | 196 | mov esi, msgAGP2 |
|
| 187 | je .agp_3 |
197 | call SysMsgBoardStr |
| 188 | 198 | ||
| Line 189... | Line 199... | ||
| 189 | .agp_2: |
199 | stdcall PciRead32, [bus], [devfn], edi ; read AGP status |
| 190 | stdcall PciRead32, [bus], [devfn], esi ; read AGP status |
200 | .agp_2_: |
| Line 197... | Line 207... | ||
| 197 | test al, 1b |
207 | test al, 1b |
| 198 | jz .error |
208 | jz .error |
| Line 199... | Line 209... | ||
| 199 | 209 | ||
| 200 | .001b: |
210 | .001b: |
| - | 211 | mov [cmd], 001b |
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| - | 212 | mov esi, msg1 |
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| 201 | mov [cmd], 001b |
213 | call SysMsgBoardStr |
| Line 202... | Line 214... | ||
| 202 | jmp .agp_go |
214 | jmp .agp_go |
| 203 | 215 | ||
| - | 216 | .010b: |
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| - | 217 | mov [cmd], 010b |
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| 204 | .010b: |
218 | mov esi, msg2 |
| Line 205... | Line 219... | ||
| 205 | mov [cmd], 010b |
219 | call SysMsgBoardStr |
| 206 | jmp .agp_go |
220 | jmp .agp_go |
| - | 221 | ||
| - | 222 | .100b: |
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| 207 | 223 | mov [cmd], 100b |
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| Line -... | Line 224... | ||
| - | 224 | mov esi, msg4 |
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| - | 225 | call SysMsgBoardStr |
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| - | 226 | jmp .agp_go |
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| - | 227 | ||
| - | 228 | .agp_2m: |
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| 208 | .100b: |
229 | mov esi, msgAGP2m |
| - | 230 | call SysMsgBoardStr |
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| - | 231 | jmp .agp_2_ |
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| - | 232 | ||
| 209 | mov [cmd], 100b |
233 | .agp_3: |
| 210 | jmp .agp_go |
234 | mov esi, msgAGP3 |
| 211 | 235 | call SysMsgBoardStr |
|
| 212 | .agp_3: |
236 | |
| - | 237 | stdcall PciRead32, [bus], [devfn], edi ; read AGP status |
|
| 213 | stdcall PciRead32, [bus], [devfn], esi ; read AGP status |
238 | test al, 1 shl 3 |
| 214 | test al, 1 shl 3 |
239 | jz .agp_2m |
| - | 240 | test eax, 10b |
|
| 215 | jz .agp_2 |
241 | jnz .8x |
| - | 242 | mov [cmd], 01b |
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| - | 243 | mov esi, msg4 |
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| 216 | mov [cmd], eax |
244 | call SysMsgBoardStr |
| - | 245 | jmp .agp_go |
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| - | 246 | ||
| Line 217... | Line 247... | ||
| 217 | and [cmd], 11b |
247 | .8x: |
| Line 218... | Line 248... | ||
| 218 | cmp [cmd], 11b |
248 | mov [cmd], 10b |
| 219 | jne .agp_go |
249 | mov esi, msg8 |
| 220 | mov [cmd], 10b |
250 | call SysMsgBoardStr |
| 221 | 251 | ||
| - | 252 | .agp_go: |
|
| - | 253 | ||
| 222 | .agp_go: |
254 | if FAST_WRITE |
| 223 | 255 | test ax, 1 shl 4 |
|
| 224 | if FAST_WRITE |
256 | jz @f |
| 225 | test ax, 1 shl 4 |
257 | or [cmd], 1 shl 4 |
| 226 | jz @f |
258 | mov esi, msgfast |
| 227 | or [cmd], 1 shl 4 |
259 | call SysMsgBoardStr |
| - | 260 | @@: |
|
| - | 261 | end if |
|
| 228 | @@: |
262 | if SIDE_BAND_ADDRESSING |
| 229 | end if |
263 | test ax, 1 shl 9 |
| 230 | if SIDE_BAND_ADDRESSING |
264 | jz @f |
| - | 265 | or [cmd], 1 shl 9 |
|
| - | 266 | mov esi, msgside |
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| - | 267 | call SysMsgBoardStr |
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| 231 | test ax, 1 shl 9 |
268 | @@: |
| 232 | jz @f |
269 | end if |
| 233 | or [cmd], 1 shl 9 |
270 | add edi, 4 |
| Line 234... | Line 271... | ||
| 234 | @@: |
271 | mov eax, [cmd] |
| 235 | end if |
272 | stdcall PciWrite32, [bus], [devfn], edi, eax ; write AGP cmd |
| 236 | add esi, 4 |
273 | |
| 237 | mov eax, [cmd] |
274 | mov eax, [cmd] |
| Line 253... | Line 290... | ||
| 253 | align 4 |
290 | align 4 |
| 254 | version dd (5 shl 16) or (API_VERSION and 0xFFFF) |
291 | version dd (5 shl 16) or (API_VERSION and 0xFFFF) |
| Line 255... | Line 292... | ||
| 255 | 292 | ||
| Line -... | Line 293... | ||
| - | 293 | my_service db 'AGP', 0 ; max 16 chars include zero |
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| 256 | my_service db 'AGP', 0 ; max 16 chars include zero |
294 | |
| 257 | 295 | msgInit db 'AGP driver loaded.', 13, 10, 0 |
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| 258 | msgInit db 'Searching AGP device...', 13, 10, 0 |
296 | msgSearch db 'Searching for AGP card...', 13, 10, 0 |
| - | 297 | msgFail db 'device not found', 13, 10, 0 |
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| - | 298 | msgOK db 'AGP device enabled', 13, 10, 0 |
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| - | 299 | msgAGP2 db 'AGP2 device found', 13, 10, 0 |
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| - | 300 | msgAGP3 db 'AGP3 device found', 13, 10, 0 |
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| - | 301 | msgAGP2m db 'Running in AGP2 mode', 13, 10, 0 |
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| - | 302 | msg8 db '8x speed', 13, 10, 0 |
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| - | 303 | msg4 db '4x speed', 13, 10, 0 |
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| - | 304 | msg2 db '2x speed', 13, 10, 0 |
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| - | 305 | msg1 db '1x speed', 13, 10, 0 |
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| Line 259... | Line 306... | ||
| 259 | msgFail db 'device not found', 13, 10, 0 |
306 | msgfast db 'Fast Write', 13, 10, 0 |
| Line 260... | Line 307... | ||
| 260 | msgOK db 'AGP device enabled', 13, 10, 0 |
307 | msgside db 'Side band addressing', 13, 10, 0 |