forked from KolibriOS/kolibrios
484 lines
12 KiB
PHP
484 lines
12 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
|
|
;; Distributed under terms of the GNU General Public License ;;
|
|
;; ;;
|
|
;; ;;
|
|
;; PCI32.INC ;;
|
|
;; ;;
|
|
;; 32 bit PCI driver code ;;
|
|
;; ;;
|
|
;; Version 0.3 April 9, 2007 ;;
|
|
;; Version 0.2 December 21st, 2002 ;;
|
|
;; ;;
|
|
;; Author: Victor Prodan, victorprodan@yahoo.com ;;
|
|
;; Mihailov Ilia, ghost.nsk@gmail.com ;;
|
|
;; Credits: ;;
|
|
;; Ralf Brown ;;
|
|
;; Mike Hibbett, mikeh@oceanfree.net ;;
|
|
;; ;;
|
|
;; See file COPYING for details ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
$Revision$
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; pci_api:
|
|
;
|
|
; Description
|
|
; entry point for system PCI calls
|
|
;***************************************************************************
|
|
|
|
align 4
|
|
_PciApi:
|
|
pci_api:
|
|
|
|
cmp [pci_access_enabled],1
|
|
jne no_pci_access_for_applications
|
|
|
|
or al,al
|
|
jnz pci_fn_1
|
|
; PCI function 0: get pci version (AH.AL)
|
|
movzx eax,word [BOOT_VAR+0x9022]
|
|
ret
|
|
|
|
pci_fn_1:
|
|
cmp al,1
|
|
jnz pci_fn_2
|
|
|
|
; PCI function 1: get last bus in AL
|
|
mov al,[BOOT_VAR+0x9021]
|
|
ret
|
|
|
|
pci_fn_2:
|
|
cmp al,2
|
|
jne pci_fn_3
|
|
; PCI function 2: get pci access mechanism
|
|
mov al,[BOOT_VAR+0x9020]
|
|
ret
|
|
pci_fn_3:
|
|
|
|
cmp al,4
|
|
jz pci_read_reg ;byte
|
|
cmp al,5
|
|
jz pci_read_reg ;word
|
|
cmp al,6
|
|
jz pci_read_reg ;dword
|
|
|
|
cmp al,8
|
|
jz pci_write_reg ;byte
|
|
cmp al,9
|
|
jz pci_write_reg ;word
|
|
cmp al,10
|
|
jz pci_write_reg ;dword
|
|
|
|
no_pci_access_for_applications:
|
|
|
|
mov eax,-1
|
|
|
|
ret
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; pci_make_config_cmd
|
|
;
|
|
; Description
|
|
; creates a command dword for use with the PCI bus
|
|
; bus # in ah
|
|
; device+func in bh (dddddfff)
|
|
; register in bl
|
|
;
|
|
; command dword returned in eax ( 10000000 bbbbbbbb dddddfff rrrrrr00 )
|
|
;***************************************************************************
|
|
|
|
align 4
|
|
|
|
pci_make_config_cmd:
|
|
shl eax,8 ; move bus to bits 16-23
|
|
mov ax,bx ; combine all
|
|
and eax,0xffffff
|
|
or eax,0x80000000
|
|
ret
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; pci_read_reg:
|
|
;
|
|
; Description
|
|
; read a register from the PCI config space into EAX/AX/AL
|
|
; IN: ah=bus,device+func=bh,register address=bl
|
|
; number of bytes to read (1,2,4) coded into AL, bits 0-1
|
|
; (0 - byte, 1 - word, 2 - dword)
|
|
;***************************************************************************
|
|
|
|
align 4
|
|
|
|
pci_read_reg:
|
|
cmp byte [BOOT_VAR+0x9020],2 ;what mechanism will we use?
|
|
je pci_read_reg_2
|
|
|
|
; mechanism 1
|
|
push esi ; save register size into ESI
|
|
mov esi,eax
|
|
and esi,3
|
|
|
|
call pci_make_config_cmd
|
|
mov ebx,eax
|
|
; get current state
|
|
mov dx,0xcf8
|
|
in eax, dx
|
|
push eax
|
|
; set up addressing to config data
|
|
mov eax,ebx
|
|
and al,0xfc ; make address dword-aligned
|
|
out dx,eax
|
|
; get requested DWORD of config data
|
|
mov dl,0xfc
|
|
and bl,3
|
|
or dl,bl ; add to port address first 2 bits of register address
|
|
|
|
or esi,esi
|
|
jz pci_read_byte1
|
|
cmp esi,1
|
|
jz pci_read_word1
|
|
cmp esi,2
|
|
jz pci_read_dword1
|
|
jmp pci_fin_read1
|
|
|
|
pci_read_byte1:
|
|
in al,dx
|
|
jmp pci_fin_read1
|
|
pci_read_word1:
|
|
in ax,dx
|
|
jmp pci_fin_read1
|
|
pci_read_dword1:
|
|
in eax,dx
|
|
jmp pci_fin_read1
|
|
pci_fin_read1:
|
|
; restore configuration control
|
|
xchg eax,[esp]
|
|
mov dx,0xcf8
|
|
out dx,eax
|
|
|
|
pop eax
|
|
pop esi
|
|
ret
|
|
pci_read_reg_2:
|
|
|
|
test bh,128 ;mech#2 only supports 16 devices per bus
|
|
jnz pci_read_reg_err
|
|
|
|
push esi ; save register size into ESI
|
|
mov esi,eax
|
|
and esi,3
|
|
|
|
push eax
|
|
;store current state of config space
|
|
mov dx,0xcf8
|
|
in al,dx
|
|
mov ah,al
|
|
mov dl,0xfa
|
|
in al,dx
|
|
|
|
xchg eax,[esp]
|
|
; out 0xcfa,bus
|
|
mov al,ah
|
|
out dx,al
|
|
; out 0xcf8,0x80
|
|
mov dl,0xf8
|
|
mov al,0x80
|
|
out dx,al
|
|
; compute addr
|
|
shr bh,3 ; func is ignored in mechanism 2
|
|
or bh,0xc0
|
|
mov dx,bx
|
|
|
|
or esi,esi
|
|
jz pci_read_byte2
|
|
cmp esi,1
|
|
jz pci_read_word2
|
|
cmp esi,2
|
|
jz pci_read_dword2
|
|
jmp pci_fin_read2
|
|
|
|
pci_read_byte2:
|
|
in al,dx
|
|
jmp pci_fin_read2
|
|
pci_read_word2:
|
|
in ax,dx
|
|
jmp pci_fin_read2
|
|
pci_read_dword2:
|
|
in eax,dx
|
|
; jmp pci_fin_read2
|
|
pci_fin_read2:
|
|
|
|
; restore configuration space
|
|
xchg eax,[esp]
|
|
mov dx,0xcfa
|
|
out dx,al
|
|
mov dl,0xf8
|
|
mov al,ah
|
|
out dx,al
|
|
|
|
pop eax
|
|
pop esi
|
|
ret
|
|
|
|
pci_read_reg_err:
|
|
xor eax,eax
|
|
dec eax
|
|
ret
|
|
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; pci_write_reg:
|
|
;
|
|
; Description
|
|
; write a register from ECX/CX/CL into the PCI config space
|
|
; IN: ah=bus,device+func=bh,register address (dword aligned)=bl,
|
|
; value to write in ecx
|
|
; number of bytes to write (1,2,4) coded into AL, bits 0-1
|
|
; (0 - byte, 1 - word, 2 - dword)
|
|
;***************************************************************************
|
|
|
|
align 4
|
|
|
|
pci_write_reg:
|
|
cmp byte [BOOT_VAR+0x9020],2 ;what mechanism will we use?
|
|
je pci_write_reg_2
|
|
|
|
; mechanism 1
|
|
push esi ; save register size into ESI
|
|
mov esi,eax
|
|
and esi,3
|
|
|
|
call pci_make_config_cmd
|
|
mov ebx,eax
|
|
; get current state into ecx
|
|
mov dx,0xcf8
|
|
in eax, dx
|
|
push eax
|
|
; set up addressing to config data
|
|
mov eax,ebx
|
|
and al,0xfc ; make address dword-aligned
|
|
out dx,eax
|
|
; write DWORD of config data
|
|
mov dl,0xfc
|
|
and bl,3
|
|
or dl,bl
|
|
mov eax,ecx
|
|
|
|
or esi,esi
|
|
jz pci_write_byte1
|
|
cmp esi,1
|
|
jz pci_write_word1
|
|
cmp esi,2
|
|
jz pci_write_dword1
|
|
jmp pci_fin_write1
|
|
|
|
pci_write_byte1:
|
|
out dx,al
|
|
jmp pci_fin_write1
|
|
pci_write_word1:
|
|
out dx,ax
|
|
jmp pci_fin_write1
|
|
pci_write_dword1:
|
|
out dx,eax
|
|
jmp pci_fin_write1
|
|
pci_fin_write1:
|
|
|
|
; restore configuration control
|
|
pop eax
|
|
mov dl,0xf8
|
|
out dx,eax
|
|
|
|
xor eax,eax
|
|
pop esi
|
|
|
|
ret
|
|
pci_write_reg_2:
|
|
|
|
test bh,128 ;mech#2 only supports 16 devices per bus
|
|
jnz pci_write_reg_err
|
|
|
|
|
|
push esi ; save register size into ESI
|
|
mov esi,eax
|
|
and esi,3
|
|
|
|
push eax
|
|
;store current state of config space
|
|
mov dx,0xcf8
|
|
in al,dx
|
|
mov ah,al
|
|
mov dl,0xfa
|
|
in al,dx
|
|
xchg eax,[esp]
|
|
; out 0xcfa,bus
|
|
mov al,ah
|
|
out dx,al
|
|
; out 0xcf8,0x80
|
|
mov dl,0xf8
|
|
mov al,0x80
|
|
out dx,al
|
|
; compute addr
|
|
shr bh,3 ; func is ignored in mechanism 2
|
|
or bh,0xc0
|
|
mov dx,bx
|
|
; write register
|
|
mov eax,ecx
|
|
|
|
or esi,esi
|
|
jz pci_write_byte2
|
|
cmp esi,1
|
|
jz pci_write_word2
|
|
cmp esi,2
|
|
jz pci_write_dword2
|
|
jmp pci_fin_write2
|
|
|
|
pci_write_byte2:
|
|
out dx,al
|
|
jmp pci_fin_write2
|
|
pci_write_word2:
|
|
out dx,ax
|
|
jmp pci_fin_write2
|
|
pci_write_dword2:
|
|
out dx,eax
|
|
jmp pci_fin_write2
|
|
pci_fin_write2:
|
|
; restore configuration space
|
|
pop eax
|
|
mov dx,0xcfa
|
|
out dx,al
|
|
mov dl,0xf8
|
|
mov al,ah
|
|
out dx,al
|
|
|
|
xor eax,eax
|
|
pop esi
|
|
ret
|
|
|
|
pci_write_reg_err:
|
|
xor eax,eax
|
|
dec eax
|
|
ret
|
|
|
|
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|
|
|
|
; VendID (2), DevID (2), Revision = 0 (1), Class Code (3), FNum (1), Bus (1)
|
|
pci_emu_dat: times 30*10 db 0
|
|
|
|
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|
|
align 4
|
|
sys_pcibios:
|
|
xchg ebx, eax
|
|
xchg ecx, eax
|
|
xchg edx, eax
|
|
xchg esi, eax
|
|
xchg edi, eax
|
|
cmp [pci_access_enabled], 1
|
|
jne .unsupported_func
|
|
cmp [pci_bios_entry], 0
|
|
jz .emulate_bios
|
|
|
|
push ds
|
|
mov ax, sel_pci_data
|
|
mov ds, ax
|
|
mov eax, ebp
|
|
mov ah, 0B1h
|
|
call pword [cs:pci_bios_entry]
|
|
pop ds
|
|
|
|
jmp .return
|
|
;-=-=-=-=-=-=-=-=
|
|
.emulate_bios:
|
|
cmp ebp, 1 ; PCI_FUNCTION_ID
|
|
jnz .not_PCI_BIOS_PRESENT
|
|
mov edx, 'PCI '
|
|
mov al, [BOOT_VAR + 0x9020]
|
|
mov bx, [BOOT_VAR + 0x9022]
|
|
mov cl, [BOOT_VAR + 0x9021]
|
|
xor ah, ah
|
|
jmp .return_abcd
|
|
|
|
.not_PCI_BIOS_PRESENT:
|
|
cmp ebp, 2 ; FIND_PCI_DEVICE
|
|
jne .not_FIND_PCI_DEVICE
|
|
mov ebx, pci_emu_dat
|
|
..nxt: cmp [ebx], dx
|
|
jne ..no
|
|
cmp [ebx + 2], cx
|
|
jne ..no
|
|
dec si
|
|
jns ..no
|
|
mov bx, [ebx + 4]
|
|
xor ah, ah
|
|
jmp .return_ab
|
|
..no: cmp word[ebx], 0
|
|
je ..dev_not_found
|
|
add ebx, 10
|
|
jmp ..nxt
|
|
..dev_not_found:
|
|
mov ah, 0x86 ; DEVICE_NOT_FOUND
|
|
jmp .return_a
|
|
|
|
.not_FIND_PCI_DEVICE:
|
|
cmp ebp, 3 ; FIND_PCI_CLASS_CODE
|
|
jne .not_FIND_PCI_CLASS_CODE
|
|
mov esi, pci_emu_dat
|
|
shl ecx, 8
|
|
..nxt2: cmp [esi], ecx
|
|
jne ..no2
|
|
mov bx, [esi]
|
|
xor ah, ah
|
|
jmp .return_ab
|
|
..no2: cmp dword[esi], 0
|
|
je ..dev_not_found
|
|
add esi, 10
|
|
jmp ..nxt2
|
|
|
|
.not_FIND_PCI_CLASS_CODE:
|
|
cmp ebp, 8 ; READ_CONFIG_*
|
|
jb .not_READ_CONFIG
|
|
cmp ebp, 0x0A
|
|
ja .not_READ_CONFIG
|
|
mov eax, ebp
|
|
mov ah, bh
|
|
mov edx, edi
|
|
mov bh, bl
|
|
mov bl, dl
|
|
call pci_read_reg
|
|
mov ecx, eax
|
|
xor ah, ah ; SUCCESSFUL
|
|
jmp .return_abc
|
|
.not_READ_CONFIG:
|
|
cmp ebp, 0x0B ; WRITE_CONFIG_*
|
|
jb .not_WRITE_CONFIG
|
|
cmp ebp, 0x0D
|
|
ja .not_WRITE_CONFIG
|
|
lea eax, [ebp+1]
|
|
mov ah, bh
|
|
mov edx, edi
|
|
mov bh, bl
|
|
mov bl, dl
|
|
call pci_write_reg
|
|
xor ah, ah ; SUCCESSFUL
|
|
jmp .return_abc
|
|
.not_WRITE_CONFIG:
|
|
.unsupported_func:
|
|
mov ah, 0x81 ; FUNC_NOT_SUPPORTED
|
|
.return:mov dword[esp + 8 ], edi
|
|
mov dword[esp + 12], esi
|
|
.return_abcd:
|
|
mov dword[esp + 28], edx
|
|
.return_abc:
|
|
mov dword[esp + 32], ecx
|
|
.return_ab:
|
|
mov dword[esp + 24], ebx
|
|
.return_a:
|
|
mov dword[esp + 36], eax
|
|
ret
|