KolibriOS/kolibrios
12
4
Fork 13
Code Issues 78 Pull Requests 5 Projects Releases Activity

r4599

Browse Source 
git-svn-id: svn://kolibrios.org@4599 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
CleverMouse 2014-02-27 18:31:15 +00:00
parent 42f5c5294a
commit 8efb57fc9b
1 changed files with 2 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
kernel/trunk/bus/pci/pci32.inc
View File

@ -165,10 +165,7 @@ pci_read_reg:
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
@ -194,14 +191,7 @@ pci_read_word1:
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 ebx
ret
pci_read_reg_2:
@ -212,15 +202,8 @@ pci_read_reg_2:
mov esi, eax ; save register size into ESI
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
mov dx, 0xcfa
xchg eax, [esp]
; out 0xcfa,bus
mov al, ah
out dx, al
@ -249,18 +232,8 @@ pci_read_word2:
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 ebx
ret
@ -296,10 +269,7 @@ pci_write_reg:
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
@ -326,14 +296,8 @@ pci_write_word1:
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 ebx esi
@ -347,14 +311,7 @@ pci_write_reg_2:
mov esi, eax ; save register size into ESI
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]
mov dx, 0xcfa
; out 0xcfa,bus
mov al, ah
out dx, al
@ -385,15 +342,7 @@ pci_write_word2:
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 ebx esi