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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 593 | mikedld | 2 | ;; ;; |
| 2465 | Serge | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
| 431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
| 5 | ;; ;; |
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| 593 | mikedld | 6 | ;; PCI16.INC ;; |
| 7 | ;; ;; |
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| 8 | ;; 16 bit PCI driver code ;; |
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| 9 | ;; ;; |
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| 10 | ;; Version 0.2 December 21st, 2002 ;; |
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| 11 | ;; ;; |
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| 12 | ;; Author: Victor Prodan, victorprodan@yahoo.com ;; |
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| 13 | ;; ;; |
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| 14 | ;; See file COPYING for details ;; |
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| 15 | ;; ;; |
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| 431 | serge | 16 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 1 | ha | 17 | |
| 593 | mikedld | 18 | $Revision: 2465 $ |
| 1 | ha | 19 | |
| 593 | mikedld | 20 | |
| 1 | ha | 21 | init_pci_16: |
| 22 | |||
| 23 | pushad |
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| 24 | |||
| 2434 | Serge | 25 | xor ax, ax |
| 26 | mov es, ax |
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| 27 | mov byte [es:0x9020], 1;default mechanism:1 |
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| 28 | mov ax, 0xb101 |
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| 29 | int 0x1a |
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| 30 | or ah, ah |
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| 31 | jnz pci16skip |
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| 1 | ha | 32 | |
| 2434 | Serge | 33 | mov [es:0x9021], cl;last PCI bus in system |
| 34 | mov [es:0x9022], bx |
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| 35 | mov [es:0x9024], edi |
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| 1 | ha | 36 | |
| 37 | ; we have a PCI BIOS, so check which configuration mechanism(s) |
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| 38 | ; it supports |
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| 39 | ; AL = PCI hardware characteristics (bit0 => mechanism1, bit1 => mechanism2) |
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| 2434 | Serge | 40 | test al, 1 |
| 41 | jnz pci16skip |
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| 42 | test al, 2 |
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| 43 | jz pci16skip |
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| 44 | mov byte [es:0x9020], 2; if (al&3)==2 => mechanism 2 |
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| 1 | ha | 45 | |
| 46 | pci16skip: |
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| 47 | |||
| 2434 | Serge | 48 | mov ax, 0x1000 |
| 49 | mov es, ax |
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| 1 | ha | 50 | |
| 431 | serge | 51 | popad |