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| 3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
| 4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
| 5 | ;; ;; |
5 | ;; ;; |
| 6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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| 7 | 7 | ||
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| 8 | $Revision: 1507 $ |
8 | $Revision: 1508 $ |
| 9 | 9 | ||
| Line 392... | Line 392... | ||
| 392 | proc init_userDMA |
392 | proc init_userDMA |
| 393 | stdcall alloc_pages, 4096 ; 16M <<<<<<<<<<+++++++++++++++++++++++++++++++++ |
393 | stdcall alloc_pages, 4096 ; 16M <<<<<<<<<<+++++++++++++++++++++++++++++++++ |
| 394 | add eax, 0x007FFFF0 |
394 | add eax, 0x007FFFF0 |
| 395 | and eax, 0xFF800000 ; align at 8M boundary |
395 | and eax, 0xFF800000 ; align at 8M boundary |
| 396 | mov [UserDMAaddr], eax |
396 | mov [UserDMAaddr], eax |
| 397 | or eax, PG_UW + PG_NOCACHE |
397 | ; or eax, PG_UW + PG_NOCACHE |
| 398 | mov ebx, USER_DMA_BUFFER |
398 | ; mov ebx, USER_DMA_BUFFER |
| 399 | mov ecx, 2048 ; 8M, to be sure |
399 | ; mov ecx, 2048 ; 8M, to be sure |
| 400 | call commit_pages |
400 | ; call commit_pages |
| 401 | mov eax, [UserDMAaddr] |
401 | ; mov eax, [UserDMAaddr] |
| 402 | or eax, PG_LARGE + PG_UW + PG_NOCACHE |
402 | or eax, PG_LARGE + PG_UW + PG_NOCACHE |
| 403 | mov ebx, sys_pgdir + (USER_DMA_BUFFER shr 20) |
403 | mov ebx, sys_pgdir + (USER_DMA_BUFFER shr 20) |
| 404 | mov [ebx], eax |
404 | mov [ebx], eax |
| 405 | add ebx, 4 |
405 | add ebx, 4 |
| 406 | add eax, 0x00400000 |
406 | add eax, 0x00400000 |