Rev 586 | Rev 594 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
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 ;; |
||
5 | ;; ;; |
||
6 | ;; ;; |
||
586 | serge | 7 | ;; PCI32.INC ;; |
8 | ;; ;; |
||
9 | ;; 32 bit PCI driver code ;; |
||
10 | ;; ;; |
||
11 | ;; Version 0.3 April 9, 2007 ;; |
||
12 | ;; Version 0.2 December 21st, 2002 ;; |
||
13 | ;; ;; |
||
14 | ;; Author: Victor Prodan, victorprodan@yahoo.com ;; |
||
15 | ;; Mihailov Ilia, ghost.nsk@gmail.com ;; |
||
16 | ;; Credits: ;; |
||
17 | ;; Ralf Brown ;; |
||
18 | ;; Mike Hibbett, mikeh@oceanfree.net ;; |
||
19 | ;; ;; |
||
20 | ;; See file COPYING for details ;; |
||
21 | ;; ;; |
||
431 | serge | 22 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 23 | |
593 | mikedld | 24 | $Revision: 593 $ |
1 | ha | 25 | |
593 | mikedld | 26 | |
1 | ha | 27 | ;*************************************************************************** |
28 | ; Function |
||
29 | ; pci_api: |
||
30 | ; |
||
31 | ; Description |
||
32 | ; entry point for system PCI calls |
||
33 | ;*************************************************************************** |
||
34 | |||
35 | align 4 |
||
36 | |||
37 | pci_api: |
||
38 | |||
39 | cmp [pci_access_enabled],1 |
||
40 | jne no_pci_access_for_applications |
||
41 | |||
42 | or al,al |
||
43 | jnz pci_fn_1 |
||
44 | ; PCI function 0: get pci version (AH.AL) |
||
465 | serge | 45 | movzx eax,word [BOOT_VAR+0x9022] |
1 | ha | 46 | ret |
47 | |||
48 | pci_fn_1: |
||
49 | cmp al,1 |
||
50 | jnz pci_fn_2 |
||
51 | |||
52 | ; PCI function 1: get last bus in AL |
||
465 | serge | 53 | mov al,[BOOT_VAR+0x9021] |
1 | ha | 54 | ret |
55 | |||
56 | pci_fn_2: |
||
57 | cmp al,2 |
||
58 | jne pci_fn_3 |
||
59 | ; PCI function 2: get pci access mechanism |
||
465 | serge | 60 | mov al,[BOOT_VAR+0x9020] |
1 | ha | 61 | ret |
62 | pci_fn_3: |
||
63 | |||
64 | cmp al,4 |
||
65 | jz pci_read_reg ;byte |
||
66 | cmp al,5 |
||
67 | jz pci_read_reg ;word |
||
68 | cmp al,6 |
||
69 | jz pci_read_reg ;dword |
||
70 | |||
71 | cmp al,8 |
||
72 | jz pci_write_reg ;byte |
||
73 | cmp al,9 |
||
74 | jz pci_write_reg ;word |
||
75 | cmp al,10 |
||
76 | jz pci_write_reg ;dword |
||
77 | |||
78 | no_pci_access_for_applications: |
||
79 | |||
80 | mov eax,-1 |
||
81 | |||
82 | ret |
||
83 | |||
84 | ;*************************************************************************** |
||
85 | ; Function |
||
86 | ; pci_make_config_cmd |
||
87 | ; |
||
88 | ; Description |
||
89 | ; creates a command dword for use with the PCI bus |
||
90 | ; bus # in ah |
||
91 | ; device+func in bh (dddddfff) |
||
92 | ; register in bl |
||
93 | ; |
||
94 | ; command dword returned in eax ( 10000000 bbbbbbbb dddddfff rrrrrr00 ) |
||
95 | ;*************************************************************************** |
||
96 | |||
97 | align 4 |
||
98 | |||
99 | pci_make_config_cmd: |
||
100 | shl eax,8 ; move bus to bits 16-23 |
||
101 | mov ax,bx ; combine all |
||
102 | and eax,0xffffff |
||
103 | or eax,0x80000000 |
||
104 | ret |
||
105 | |||
106 | ;*************************************************************************** |
||
107 | ; Function |
||
108 | ; pci_read_reg: |
||
109 | ; |
||
110 | ; Description |
||
111 | ; read a register from the PCI config space into EAX/AX/AL |
||
112 | ; IN: ah=bus,device+func=bh,register address=bl |
||
113 | ; number of bytes to read (1,2,4) coded into AL, bits 0-1 |
||
586 | serge | 114 | ; (0 - byte, 1 - word, 2 - dword) |
1 | ha | 115 | ;*************************************************************************** |
116 | |||
117 | align 4 |
||
118 | |||
119 | pci_read_reg: |
||
465 | serge | 120 | cmp byte [BOOT_VAR+0x9020],2 ;what mechanism will we use? |
1 | ha | 121 | je pci_read_reg_2 |
122 | |||
123 | ; mechanism 1 |
||
124 | push esi ; save register size into ESI |
||
125 | mov esi,eax |
||
126 | and esi,3 |
||
127 | |||
128 | call pci_make_config_cmd |
||
129 | mov ebx,eax |
||
130 | ; get current state |
||
131 | mov dx,0xcf8 |
||
132 | in eax, dx |
||
133 | push eax |
||
134 | ; set up addressing to config data |
||
135 | mov eax,ebx |
||
136 | and al,0xfc ; make address dword-aligned |
||
137 | out dx,eax |
||
138 | ; get requested DWORD of config data |
||
139 | mov dl,0xfc |
||
140 | and bl,3 |
||
141 | or dl,bl ; add to port address first 2 bits of register address |
||
142 | |||
143 | or esi,esi |
||
144 | jz pci_read_byte1 |
||
145 | cmp esi,1 |
||
146 | jz pci_read_word1 |
||
147 | cmp esi,2 |
||
148 | jz pci_read_dword1 |
||
149 | jmp pci_fin_read1 |
||
150 | |||
151 | pci_read_byte1: |
||
152 | in al,dx |
||
153 | jmp pci_fin_read1 |
||
154 | pci_read_word1: |
||
155 | in ax,dx |
||
156 | jmp pci_fin_read1 |
||
157 | pci_read_dword1: |
||
158 | in eax,dx |
||
159 | jmp pci_fin_read1 |
||
160 | pci_fin_read1: |
||
161 | ; restore configuration control |
||
162 | xchg eax,[esp] |
||
163 | mov dx,0xcf8 |
||
164 | out dx,eax |
||
165 | |||
166 | pop eax |
||
167 | pop esi |
||
168 | ret |
||
169 | pci_read_reg_2: |
||
170 | |||
171 | test bh,128 ;mech#2 only supports 16 devices per bus |
||
172 | jnz pci_read_reg_err |
||
173 | |||
174 | push esi ; save register size into ESI |
||
175 | mov esi,eax |
||
176 | and esi,3 |
||
177 | |||
178 | push eax |
||
179 | ;store current state of config space |
||
180 | mov dx,0xcf8 |
||
181 | in al,dx |
||
182 | mov ah,al |
||
183 | mov dl,0xfa |
||
184 | in al,dx |
||
185 | |||
186 | xchg eax,[esp] |
||
187 | ; out 0xcfa,bus |
||
188 | mov al,ah |
||
189 | out dx,al |
||
190 | ; out 0xcf8,0x80 |
||
191 | mov dl,0xf8 |
||
192 | mov al,0x80 |
||
193 | out dx,al |
||
194 | ; compute addr |
||
195 | shr bh,3 ; func is ignored in mechanism 2 |
||
196 | or bh,0xc0 |
||
197 | mov dx,bx |
||
198 | |||
199 | or esi,esi |
||
200 | jz pci_read_byte2 |
||
201 | cmp esi,1 |
||
202 | jz pci_read_word2 |
||
203 | cmp esi,2 |
||
204 | jz pci_read_dword2 |
||
205 | jmp pci_fin_read2 |
||
206 | |||
207 | pci_read_byte2: |
||
208 | in al,dx |
||
209 | jmp pci_fin_read2 |
||
210 | pci_read_word2: |
||
211 | in ax,dx |
||
212 | jmp pci_fin_read2 |
||
213 | pci_read_dword2: |
||
214 | in eax,dx |
||
215 | ; jmp pci_fin_read2 |
||
216 | pci_fin_read2: |
||
217 | |||
218 | ; restore configuration space |
||
219 | xchg eax,[esp] |
||
220 | mov dx,0xcfa |
||
221 | out dx,al |
||
222 | mov dl,0xf8 |
||
223 | mov al,ah |
||
224 | out dx,al |
||
225 | |||
226 | pop eax |
||
227 | pop esi |
||
228 | ret |
||
229 | |||
230 | pci_read_reg_err: |
||
231 | xor eax,eax |
||
232 | dec eax |
||
233 | ret |
||
234 | |||
235 | |||
236 | ;*************************************************************************** |
||
237 | ; Function |
||
238 | ; pci_write_reg: |
||
239 | ; |
||
240 | ; Description |
||
241 | ; write a register from ECX/CX/CL into the PCI config space |
||
242 | ; IN: ah=bus,device+func=bh,register address (dword aligned)=bl, |
||
243 | ; value to write in ecx |
||
244 | ; number of bytes to write (1,2,4) coded into AL, bits 0-1 |
||
586 | serge | 245 | ; (0 - byte, 1 - word, 2 - dword) |
1 | ha | 246 | ;*************************************************************************** |
247 | |||
248 | align 4 |
||
249 | |||
250 | pci_write_reg: |
||
465 | serge | 251 | cmp byte [BOOT_VAR+0x9020],2 ;what mechanism will we use? |
1 | ha | 252 | je pci_write_reg_2 |
253 | |||
254 | ; mechanism 1 |
||
255 | push esi ; save register size into ESI |
||
256 | mov esi,eax |
||
257 | and esi,3 |
||
258 | |||
259 | call pci_make_config_cmd |
||
260 | mov ebx,eax |
||
261 | ; get current state into ecx |
||
262 | mov dx,0xcf8 |
||
263 | in eax, dx |
||
264 | push eax |
||
265 | ; set up addressing to config data |
||
266 | mov eax,ebx |
||
267 | and al,0xfc ; make address dword-aligned |
||
268 | out dx,eax |
||
269 | ; write DWORD of config data |
||
270 | mov dl,0xfc |
||
271 | and bl,3 |
||
272 | or dl,bl |
||
273 | mov eax,ecx |
||
274 | |||
275 | or esi,esi |
||
276 | jz pci_write_byte1 |
||
277 | cmp esi,1 |
||
278 | jz pci_write_word1 |
||
279 | cmp esi,2 |
||
280 | jz pci_write_dword1 |
||
281 | jmp pci_fin_write1 |
||
282 | |||
283 | pci_write_byte1: |
||
284 | out dx,al |
||
285 | jmp pci_fin_write1 |
||
286 | pci_write_word1: |
||
287 | out dx,ax |
||
288 | jmp pci_fin_write1 |
||
289 | pci_write_dword1: |
||
290 | out dx,eax |
||
291 | jmp pci_fin_write1 |
||
292 | pci_fin_write1: |
||
293 | |||
294 | ; restore configuration control |
||
295 | pop eax |
||
296 | mov dl,0xf8 |
||
297 | out dx,eax |
||
298 | |||
299 | xor eax,eax |
||
300 | pop esi |
||
301 | |||
302 | ret |
||
303 | pci_write_reg_2: |
||
304 | |||
305 | test bh,128 ;mech#2 only supports 16 devices per bus |
||
306 | jnz pci_write_reg_err |
||
307 | |||
308 | |||
309 | push esi ; save register size into ESI |
||
310 | mov esi,eax |
||
311 | and esi,3 |
||
312 | |||
313 | push eax |
||
314 | ;store current state of config space |
||
315 | mov dx,0xcf8 |
||
316 | in al,dx |
||
317 | mov ah,al |
||
318 | mov dl,0xfa |
||
319 | in al,dx |
||
320 | xchg eax,[esp] |
||
321 | ; out 0xcfa,bus |
||
322 | mov al,ah |
||
323 | out dx,al |
||
324 | ; out 0xcf8,0x80 |
||
325 | mov dl,0xf8 |
||
326 | mov al,0x80 |
||
327 | out dx,al |
||
328 | ; compute addr |
||
329 | shr bh,3 ; func is ignored in mechanism 2 |
||
330 | or bh,0xc0 |
||
331 | mov dx,bx |
||
332 | ; write register |
||
333 | mov eax,ecx |
||
334 | |||
335 | or esi,esi |
||
336 | jz pci_write_byte2 |
||
337 | cmp esi,1 |
||
338 | jz pci_write_word2 |
||
339 | cmp esi,2 |
||
340 | jz pci_write_dword2 |
||
341 | jmp pci_fin_write2 |
||
342 | |||
343 | pci_write_byte2: |
||
344 | out dx,al |
||
345 | jmp pci_fin_write2 |
||
346 | pci_write_word2: |
||
347 | out dx,ax |
||
348 | jmp pci_fin_write2 |
||
349 | pci_write_dword2: |
||
350 | out dx,eax |
||
351 | jmp pci_fin_write2 |
||
352 | pci_fin_write2: |
||
353 | ; restore configuration space |
||
354 | pop eax |
||
355 | mov dx,0xcfa |
||
356 | out dx,al |
||
357 | mov dl,0xf8 |
||
358 | mov al,ah |
||
359 | out dx,al |
||
360 | |||
361 | xor eax,eax |
||
362 | pop esi |
||
363 | ret |
||
364 | |||
365 | pci_write_reg_err: |
||
366 | xor eax,eax |
||
367 | dec eax |
||
368 | ret |
||
586 | serge | 369 | |
370 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
||
371 | |||
372 | ; VendID (2), DevID (2), Revision = 0 (1), Class Code (3), FNum (1), Bus (1) |
||
373 | pci_emu_dat: times 30*10 db 0 |
||
374 | |||
375 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
||
376 | align 4 |
||
377 | sys_pcibios: |
||
378 | cmp [pci_access_enabled], 1 |
||
379 | jne .unsupported_func |
||
380 | mov edi, [pci_bios_entry] |
||
381 | test edi, edi |
||
382 | jz .emulate_bios |
||
383 | xchg ebx, eax |
||
384 | xchg ecx, eax |
||
385 | xchg edx, eax |
||
386 | xchg esi, eax |
||
387 | mov edi, eax |
||
388 | |||
389 | push ds |
||
390 | mov ax, pci_data_sel |
||
391 | mov ds, ax |
||
392 | mov eax, ebp |
||
393 | call pword [cs:pci_bios_entry] |
||
394 | pop ds |
||
395 | |||
396 | jmp .return |
||
397 | ;-=-=-=-=-=-=-=-= |
||
398 | .emulate_bios: |
||
399 | cmp ebp, 1 ; PCI_FUNCTION_ID |
||
400 | jnz .not_PCI_BIOS_PRESENT |
||
401 | mov edx, 'PCI ' |
||
402 | xor ah, ah |
||
403 | mov al, [OS_BASE+0x2F0000 + 0x9020] |
||
404 | mov bx, [OS_BASE+0x2F0000 + 0x9022] |
||
405 | mov cl, [OS_BASE+0x2F0000 + 0x9021] |
||
406 | jmp .return |
||
407 | |||
408 | .not_PCI_BIOS_PRESENT: |
||
409 | cmp ebp, 2 ; FIND_PCI_DEVICE |
||
410 | jne .not_FIND_PCI_DEVICE |
||
411 | mov esi, pci_emu_dat |
||
412 | ..nxt: cmp [esi], cx |
||
413 | jne ..no |
||
414 | cmp [esi + 2], bx |
||
415 | jne ..no |
||
416 | dec dx |
||
417 | jns ..no |
||
418 | mov bx, [esi + 4] |
||
419 | xor ah, ah |
||
420 | jmp .return |
||
421 | ..no: cmp word[esi], 0 |
||
422 | je ..dev_not_found |
||
423 | add esi, 10 |
||
424 | jmp ..nxt |
||
425 | ..dev_not_found: |
||
426 | mov ah, 0x86 ; DEVICE_NOT_FOUND |
||
427 | jmp .return |
||
428 | |||
429 | .not_FIND_PCI_DEVICE: |
||
430 | cmp ebp, 3 ; FIND_PCI_CLASS_CODE |
||
431 | jne .not_FIND_PCI_CLASS_CODE |
||
432 | mov esi, pci_emu_dat |
||
433 | shl ebx, 8 |
||
434 | ..nxt2: cmp [esi], ebx |
||
435 | jne ..no2 |
||
436 | mov bx, [esi] |
||
437 | xor ah, ah |
||
438 | jmp .return |
||
439 | ..no2: cmp dword[esi], 0 |
||
440 | je ..dev_not_found2 |
||
441 | add esi, 10 |
||
442 | jmp ..nxt2 |
||
443 | ..dev_not_found2: |
||
444 | mov ah, 0x86 ; DEVICE_NOT_FOUND |
||
445 | jmp .return |
||
446 | |||
447 | .not_FIND_PCI_CLASS_CODE: |
||
448 | cmp ebp, 8 ; READ_CONFIG_* |
||
449 | jb .not_READ_CONFIG |
||
450 | cmp ebp, 0x0A |
||
451 | ja .not_READ_CONFIG |
||
452 | mov ebx, esi |
||
453 | mov bh, al |
||
454 | mov edx, ebp |
||
455 | mov al, dl |
||
456 | call pci_read_reg |
||
457 | mov ecx, eax |
||
458 | xor ah, ah ; SUCCESSFUL |
||
459 | jmp .return |
||
460 | .not_READ_CONFIG: |
||
461 | cmp ebp, 0x0B ; WRITE_CONFIG_* |
||
462 | jb .not_WRITE_CONFIG |
||
463 | cmp ebp, 0x0D |
||
464 | ja .not_WRITE_CONFIG |
||
465 | mov ecx, ebx |
||
466 | mov ebx, esi |
||
467 | mov bh, al |
||
468 | mov edx, ebp |
||
469 | inc edx |
||
470 | mov al, dl |
||
471 | call pci_write_reg |
||
472 | xor ah, ah ; SUCCESSFUL |
||
473 | jmp .return |
||
474 | .not_WRITE_CONFIG: |
||
475 | .unsupported_func: |
||
476 | mov ah, 0x81 ; FUNC_NOT_SUPPORTED |
||
477 | .return:mov dword[esp + 8 ], edi |
||
478 | mov dword[esp + 12], esi |
||
479 | mov dword[esp + 24], ebx |
||
480 | mov dword[esp + 28], edx |
||
481 | mov dword[esp + 32], ecx |
||
482 | mov dword[esp + 36], eax |
||
483 | ret |