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last AGP updates

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git-svn-id: svn://kolibrios.org@2902 a494cfbc-eb01-0410-851d-a64ba20cac60
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hidnplayr 2012-08-02 09:05:35 +00:00
parent 3ee5118adc
commit 7dadbba2bb
1 changed files with 5 additions and 12 deletions
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17
kernel/trunk/drivers/agp.asm
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@ -16,8 +16,7 @@
format MS COFF format MS COFF
DEBUG equ 1 DEBUG equ 1
FAST_WRITE equ 0 FAST_WRITE equ 0 ; may cause problems with some motherboards
SIDE_BAND_ADDRESSING equ 0
include 'proc32.inc' include 'proc32.inc'
include 'imports.inc' include 'imports.inc'
@ -150,10 +149,8 @@ proc detect
jna .next_bus jna .next_bus
.error: .error:
if DEBUG
mov esi, msgFail mov esi, msgFail
call SysMsgBoardStr call SysMsgBoardStr
end if
xor eax, eax xor eax, eax
inc eax inc eax
@ -237,6 +234,7 @@ proc detect
stdcall PciRead32, [bus], [devfn], edi ; read AGP status stdcall PciRead32, [bus], [devfn], edi ; read AGP status
test al, 1 shl 3 test al, 1 shl 3
jz .agp_2m jz .agp_2m
test eax, 10b test eax, 10b
jnz .8x jnz .8x
mov [cmd], 01b mov [cmd], 01b
@ -259,26 +257,21 @@ if FAST_WRITE
call SysMsgBoardStr call SysMsgBoardStr
@@: @@:
end if end if
if SIDE_BAND_ADDRESSING
test ax, 1 shl 9 test ax, 1 shl 9 ; Side band addressing
jz @f jz @f
or [cmd], 1 shl 9 or [cmd], 1 shl 9
mov esi, msgside mov esi, msgside
call SysMsgBoardStr call SysMsgBoardStr
@@: @@:
end if
add edi, 4
mov eax, [cmd]
stdcall PciWrite32, [bus], [devfn], edi, eax ; write AGP cmd
add edi, 4
mov eax, [cmd] mov eax, [cmd]
or eax, 1 shl 8 ; enable AGP or eax, 1 shl 8 ; enable AGP
stdcall PciWrite32, [bus], [devfn], edi, eax ; write AGP cmd stdcall PciWrite32, [bus], [devfn], edi, eax ; write AGP cmd
if DEBUG
mov esi, msgOK mov esi, msgOK
call SysMsgBoardStr call SysMsgBoardStr
end if
ret ret