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More debug output and some fixes for AGP

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git-svn-id: svn://kolibrios.org@2901 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2012-08-02 07:30:54 +00:00
parent aaaa8209f1
commit 3ee5118adc
1 changed files with 63 additions and 16 deletions
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79
kernel/trunk/drivers/agp.asm
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@ -114,6 +114,9 @@ proc detect
last_bus dd ?
endl
mov esi, msgSearch
call SysMsgBoardStr
xor eax, eax
mov [bus], eax
inc eax
@ -127,6 +130,9 @@ proc detect
.next_dev:
stdcall PciRead16, [bus], [devfn], dword 0x0a ; read class/subclass
cmp ax, 0x0300 ; display controller - vga compatable controller
je .found
cmp ax, 0x0302 ; display controller - 3d controller
je .found
@ -166,28 +172,32 @@ proc detect
.got_capabilities_list:
stdcall PciRead8, [bus], [devfn], dword 0x34 ; read capabilities offset
and eax, 11111100b ; always dword aligned
mov esi, eax
mov edi, eax
.read_capability:
stdcall PciRead32, [bus], [devfn], esi ; read capability
stdcall PciRead32, [bus], [devfn], edi ; read capability
cmp al, 0x02 ; AGP
je .got_agp
movzx esi, ah ; pointer to next capability
test esi, esi
movzx edi, ah ; pointer to next capability
test edi, edi
jnz .read_capability
jmp .next
.got_agp:
shl eax, 16
shr eax, 16
mov [revision], al ; high nibble = major revision
; low nibble = minor revision
add esi, 4
add edi, 4
and al, 0xf0
cmp al, 0x30
je .agp_3
.agp_2:
stdcall PciRead32, [bus], [devfn], esi ; read AGP status
mov esi, msgAGP2
call SysMsgBoardStr
stdcall PciRead32, [bus], [devfn], edi ; read AGP status
.agp_2_:
test al, 100b
jnz .100b
@ -199,25 +209,45 @@ proc detect
.001b:
mov [cmd], 001b
mov esi, msg1
call SysMsgBoardStr
jmp .agp_go
.010b:
mov [cmd], 010b
mov esi, msg2
call SysMsgBoardStr
jmp .agp_go
.100b:
mov [cmd], 100b
mov esi, msg4
call SysMsgBoardStr
jmp .agp_go
.agp_2m:
mov esi, msgAGP2m
call SysMsgBoardStr
jmp .agp_2_
.agp_3:
stdcall PciRead32, [bus], [devfn], esi ; read AGP status
mov esi, msgAGP3
call SysMsgBoardStr
stdcall PciRead32, [bus], [devfn], edi ; read AGP status
test al, 1 shl 3
jz .agp_2
mov [cmd], eax
and [cmd], 11b
cmp [cmd], 11b
jne .agp_go
jz .agp_2m
test eax, 10b
jnz .8x
mov [cmd], 01b
mov esi, msg4
call SysMsgBoardStr
jmp .agp_go
.8x:
mov [cmd], 10b
mov esi, msg8
call SysMsgBoardStr
.agp_go:
@ -225,18 +255,25 @@ if FAST_WRITE
test ax, 1 shl 4
jz @f
or [cmd], 1 shl 4
mov esi, msgfast
call SysMsgBoardStr
@@:
end if
if SIDE_BAND_ADDRESSING
test ax, 1 shl 9
jz @f
or [cmd], 1 shl 9
mov esi, msgside
call SysMsgBoardStr
@@:
end if
add esi, 4
add edi, 4
mov eax, [cmd]
stdcall PciWrite32, [bus], [devfn], edi, eax ; write AGP cmd
mov eax, [cmd]
or eax, 1 shl 8 ; enable AGP
stdcall PciWrite32, [bus], [devfn], esi, eax ; write AGP cmd
stdcall PciWrite32, [bus], [devfn], edi, eax ; write AGP cmd
if DEBUG
mov esi, msgOK
@ -255,9 +292,19 @@ version dd (5 shl 16) or (API_VERSION and 0xFFFF)
my_service db 'AGP', 0 ; max 16 chars include zero
msgInit db 'Searching AGP device...', 13, 10, 0
msgInit db 'AGP driver loaded.', 13, 10, 0
msgSearch db 'Searching for AGP card...', 13, 10, 0
msgFail db 'device not found', 13, 10, 0
msgOK db 'AGP device enabled', 13, 10, 0
msgAGP2 db 'AGP2 device found', 13, 10, 0
msgAGP3 db 'AGP3 device found', 13, 10, 0
msgAGP2m db 'Running in AGP2 mode', 13, 10, 0
msg8 db '8x speed', 13, 10, 0
msg4 db '4x speed', 13, 10, 0
msg2 db '2x speed', 13, 10, 0
msg1 db '1x speed', 13, 10, 0
msgfast db 'Fast Write', 13, 10, 0
msgside db 'Side band addressing', 13, 10, 0
section '.data' data readable writable align 16