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$Revision: 465 $
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$Revision: 586 $
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;                                                           ;;
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;;                                                              ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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;;                                                              ;;
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;;                                                              ;;
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;;  PCI32.INC                                                ;;
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;;  PCI32.INC                                                   ;;
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;;                                                           ;;
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;;                                                              ;;
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;;  32 bit PCI driver code                                   ;;
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;;  32 bit PCI driver code                                      ;;
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;;                                                           ;;
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;;                                                              ;;
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;;  Version 0.3  April 9, 2007                                  ;;
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;;  Version 0.2  December 21st, 2002                         ;;
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;;  Version 0.2  December 21st, 2002                            ;;
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;;                                                           ;;
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;;                                                              ;;
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;;  Author: Victor Prodan, victorprodan@yahoo.com            ;;
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;;  Author: Victor Prodan, victorprodan@yahoo.com               ;;
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;;          Mihailov Ilia, ghost.nsk@gmail.com                  ;;
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;;    Credits:                                               ;;
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;;    Credits:                                                  ;;
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;;          Ralf Brown                                       ;;
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;;          Ralf Brown                                          ;;
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;;          Mike Hibbett, mikeh@oceanfree.net                ;;
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;;          Mike Hibbett, mikeh@oceanfree.net                   ;;
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;;                                                           ;;
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;;                                                              ;;
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;;  See file COPYING for details                             ;;
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;;  See file COPYING for details                                ;;
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;
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;
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;   Description
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;   Description
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;       read a register from the PCI config space into EAX/AX/AL
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;       read a register from the PCI config space into EAX/AX/AL
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;       IN: ah=bus,device+func=bh,register address=bl
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;       IN: ah=bus,device+func=bh,register address=bl
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;           number of bytes to read (1,2,4) coded into AL, bits 0-1
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;           number of bytes to read (1,2,4) coded into AL, bits 0-1
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;           (0 - byte, 1 - word, 2 - dword)
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;***************************************************************************
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;***************************************************************************
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align 4
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align 4
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;   Description
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;   Description
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;       write a register from ECX/CX/CL into the PCI config space
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;       write a register from ECX/CX/CL into the PCI config space
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;       IN: ah=bus,device+func=bh,register address (dword aligned)=bl,
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;       IN: ah=bus,device+func=bh,register address (dword aligned)=bl,
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;           value to write in ecx
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;           value to write in ecx
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;           number of bytes to write (1,2,4) coded into AL, bits 0-1
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;           number of bytes to write (1,2,4) coded into AL, bits 0-1
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;           (0 - byte, 1 - word, 2 - dword)
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;***************************************************************************
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;***************************************************************************
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align 4
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align 4
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pci_write_reg_err:
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pci_write_reg_err:
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        xor     eax,eax
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        xor     eax,eax
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        dec     eax
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        dec     eax
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        ret
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- 
 
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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; VendID (2), DevID (2), Revision = 0 (1), Class Code (3), FNum (1), Bus (1)
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pci_emu_dat:	times	30*10 db 0
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;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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align 4
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sys_pcibios:
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	cmp	[pci_access_enabled], 1
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        jne	.unsupported_func
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	mov	edi, [pci_bios_entry]
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	test	edi, edi
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	jz	.emulate_bios
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	xchg	ebx, eax
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	xchg	ecx, eax
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	xchg	edx, eax
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	xchg	esi, eax
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        mov     edi, eax
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        push ds
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        mov ax, pci_data_sel
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        mov ds, ax
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        mov eax, ebp
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        call pword [cs:pci_bios_entry]
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        pop ds
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	jmp	.return
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	;-=-=-=-=-=-=-=-=
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.emulate_bios:
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	cmp	ebp, 1			; PCI_FUNCTION_ID
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	jnz	.not_PCI_BIOS_PRESENT
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	mov	edx, 'PCI '
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	xor	ah, ah
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        mov     al, [OS_BASE+0x2F0000 + 0x9020]
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        mov     bx, [OS_BASE+0x2F0000 + 0x9022]
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        mov     cl, [OS_BASE+0x2F0000 + 0x9021]
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	jmp	.return
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.not_PCI_BIOS_PRESENT:
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	cmp	ebp, 2			; FIND_PCI_DEVICE
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	jne	.not_FIND_PCI_DEVICE
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	mov	esi, pci_emu_dat
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..nxt:	cmp	[esi], cx
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	jne	..no
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	cmp	[esi + 2], bx
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	jne	..no
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	dec	dx
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	jns	..no
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	mov	bx, [esi + 4]
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	xor	ah, ah
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	jmp	.return
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..no:	cmp	word[esi], 0
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	je	..dev_not_found
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	add	esi, 10
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	jmp	..nxt
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..dev_not_found:
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	mov	ah, 0x86		; DEVICE_NOT_FOUND
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	jmp	.return
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.not_FIND_PCI_DEVICE:
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	cmp	ebp, 3			; FIND_PCI_CLASS_CODE
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	jne	.not_FIND_PCI_CLASS_CODE
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	mov	esi, pci_emu_dat
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	shl	ebx, 8
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..nxt2:	cmp	[esi], ebx
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	jne	..no2
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	mov	bx, [esi]
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	xor	ah, ah
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	jmp	.return
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..no2:	cmp	dword[esi], 0
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	je	..dev_not_found2
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	add	esi, 10
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	jmp	..nxt2
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..dev_not_found2:
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	mov	ah, 0x86		; DEVICE_NOT_FOUND
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	jmp	.return
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.not_FIND_PCI_CLASS_CODE:
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	cmp	ebp, 8			; READ_CONFIG_*
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	jb	.not_READ_CONFIG
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	cmp	ebp, 0x0A
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	ja	.not_READ_CONFIG
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	mov	ebx, esi
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	mov	bh, al
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	mov	edx, ebp
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	mov	al, dl
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	call	pci_read_reg
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	mov	ecx, eax
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	xor	ah, ah			; SUCCESSFUL
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	jmp	.return
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.not_READ_CONFIG:
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	cmp	ebp, 0x0B		; WRITE_CONFIG_*
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	jb	.not_WRITE_CONFIG
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	cmp	ebp, 0x0D
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	ja	.not_WRITE_CONFIG
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	mov	ecx, ebx
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	mov	ebx, esi
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	mov	bh, al
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	mov	edx, ebp
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	inc	edx
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	mov	al, dl
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	call	pci_write_reg
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	xor	ah, ah			; SUCCESSFUL
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	jmp	.return
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.not_WRITE_CONFIG:
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.unsupported_func:
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 475 
	mov	ah, 0x81		; FUNC_NOT_SUPPORTED
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.return:mov	dword[esp + 8 ], edi
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	mov	dword[esp + 12], esi
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	mov	dword[esp + 24], ebx
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	mov	dword[esp + 28], edx
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	mov	dword[esp + 32], ecx
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	mov	dword[esp + 36], eax