kolibrios/kernel/branches/Kolibri-acpi/drivers/vidrdc.asm
Sergey Semyonov (Serge) edbca7f724 kolibri-acpi:update
git-svn-id: svn://kolibrios.org@4287 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-11-24 07:02:55 +00:00

438 lines
14 KiB
NASM

; Stub of videodriver for RDC Semiconductor Co. M2010/M2012 videocards (controller names: R3306/R3308).
; It is used in SoC produced by DMP Electronics Inc.:
; Vortex86MX (contains RDC M2010 graphics card, appears in eBox-3300MX)
; Vortex86MX+ (contains RDC M2012 graphics card, appears in eBox-3310MX)
; Link to manufacturers websites -
; RDC Semiconductor Co.: http://www.rdc.com.tw
; DM&P Electronics Inc.: http://www.dmp.com.tw and http://www.compactpc.com.tw
; Code stolen from vidintel.asm driver (c) by CleverMouse and adapted for RDC.
; When the start procedure gets control,
; it tries to detect preferred resolution,
; sets the detected resolution assuming 32-bpp VESA mode and exits
; (without registering a service).
; Detection can be overloaded with compile-time settings
; use_predefined_mode/predefined_width/predefined_height.
; set predefined resolution here
use_predefined_mode = 0;1
predefined_width = 0;1366
predefined_height = 0;768
; standard driver stuff
format MS COFF
DEBUG = 1
include 'proc32.inc'
include 'imports.inc'
public START
public version
section '.flat' code readable align 16
; the start procedure (see the description above)
START:
; 1. Detect device. Abort if not found.
push esi
call DetectDevice
test esi, esi
jz .return0
;{START}yogev_ezra: temporary exit after detection
pusha
mov esi, exitmsg
call SysMsgBoardStr
popa
jmp .return0
;{END}yogev_ezra: temporary exit after detection
; 2. Detect optimal mode unless the mode is given explicitly. Abort if failed.
if use_predefined_mode = 0
call DetectMode
end if
cmp [width], 0
jz .return0_cleanup
; 3. Set the detected mode.
call SetMode
; 4. Cleanup and return.
.return0_cleanup:
stdcall FreeKernelSpace, esi
.return0:
pop esi
xor eax, eax
ret 4
; check that there is RDC videocard
; if so, map MMIO registers and set internal variables
; esi points to MMIO block; NULL means no device
DetectDevice:
; 1. Sanity check: check that we are dealing with RDC videocard.
; Integrated video device for RDC is always at PCI:0:13:0 (bus:dev:fn=0:0d:0)
xor esi, esi ; initialize return value to NULL
; 1a. Get PCI VendorID and DeviceID.
push esi ; in: reg=0 (register) -> register 00 means return DeviceID (bits 16-31) + VendorID (bits 0-15)
push 68h ; in: devfn=13:0 | device:5bit (0Dh = 1101) + func:3bit (0 = 000) -> total:1byte (1101000b = 68h)
push esi ; in: bus=0
call PciRead32
; 1b. loword(eax) = ax = VendorID, hiword(eax) = DeviceID.
; Test whether we have RDC Semiconductor Co. chipset.
cmp ax, 17F3h ;VendorID 0x17F3, 'RDC Semiconductor Co.'
jnz .return
; 1c. Say hi including DeviceID.
shr eax, 10h ; now, ax = HIWORD(eax) = PCI DeviceID
push edi
pusha
mov edi, pciid_text ; edi='0000'
call WriteWord
mov esi, hellomsg
call SysMsgBoardStr
popa
; 1d. Test whether we know this DeviceID.
; If this is the case, remember the position of the device in line of RDC cards;
; this knowledge will be useful later.
; Tested on devices with id: 17F3:2010, 17F3:2012.
mov ecx, pciids_num
mov edi, pciids
repnz scasw
pop edi
jnz .return_unknown_pciid
sub ecx, pciids_num - 1
neg ecx
mov [deviceType], ecx
; 1e. Continue saying hi with positive intonation.
pusha
mov esi, knownmsg
call SysMsgBoardStr
popa
; 2. Prepare MMIO region to control the card.
; 2a. Read MMIO physical address from PCI config space.
; According to RDC M2010/M2012 registers manual, their memory-mapped I/O space is located at Base address #1
push 14h ; in: reg=14h (register) -> register 14h means Base address #1 (BAR1) in PCI configuration space
push 68h ; in: devfn=13:0 | device:5bit (0Dh = 1101) + func:3bit (0 = 000) -> total:1byte (1101000b = 68h)
push esi ; in: bus=0
call PciRead32
; 2b. Mask out PCI region type, lower 4 bits.
and al, not 0xF
; 2c. Create virtual mapping of the physical memory.
push 1Bh
push 100000h
push eax
call MapIoMem
; 3. Return.
xchg esi, eax
.return:
ret
; 1f. If we do not know DeviceID, continue saying hi with negative intonation.
.return_unknown_pciid:
pusha
mov esi, unknownmsg
call SysMsgBoardStr
popa
ret
; Convert word in ax to hexadecimal text in edi, advance edi.
WriteWord:
; 1. Convert high byte.
push eax
mov al, ah
call WriteByte
pop eax
; 2. Convert low byte.
; Fall through to WriteByte; ret from WriteByte is ret from WriteWord too.
; Convert byte in al to hexadecimal text in edi, advance edi.
WriteByte:
; 1. Convert high nibble.
push eax
shr al, 4
call WriteNibble
pop eax
; 2. Convert low nibble.
and al, 0xF
; Fall through to WriteNibble; ret from WriteNibble is ret from WriteByte too.
; Convert nibble in al to hexadecimal text in edi, advance edi.
WriteNibble:
; Obvious, isn't it?
cmp al, 10
sbb al, 69h
das
stosb ; This instruction uses EDI implicitly
ret
if use_predefined_mode = 0
; detect resolution of the flat panel
DetectMode:
push esi edi
; 1. Get the location of block of GMBUS* registers.
; Starting with Ironlake, GMBUS* registers were moved.
add esi, 5100h
cmp [deviceType], pciids_num ;ironlake_start
jb @f
add esi, 0xC0000
@@:
; 2. Initialize GMBUS engine.
mov edi, edid
mov ecx, 0x10000
@@:
test byte [esi+8+1], 80h
loopnz @b
jnz .fail
mov dword [esi], 3
test byte [esi+8+1], 4
jz .noreset
call ResetGMBus
jnz .fail
.noreset:
; 3. Send read command.
and dword [esi+20h], 0
mov dword [esi+4], 4E8000A1h
; 4. Wait for data, writing to the buffer as data arrive.
.getdata:
mov ecx, 0x10000
@@:
test byte [esi+8+1], 8
loopz @b
test byte [esi+8+1], 4
jz .dataok
call ResetGMBus
jmp .fail
.dataok:
mov eax, [esi+0Ch]
stosd
cmp edi, edid+80h
jb .getdata
; 5. Wait for bus idle.
mov ecx, 0x10000
@@:
test byte [esi+8+1], 2
loopnz @b
; 6. We got EDID; dump it if DEBUG.
if DEBUG
pusha
xor ecx, ecx
mov esi, edid
mov edi, edid_text
.dumploop:
lodsb
call WriteByte
mov al, ' '
stosb
inc cl
test cl, 15
jnz @f
mov byte [edi-1], 13
mov al, 10
stosb
@@:
test cl, cl
jns .dumploop
mov esi, edidmsg
call SysMsgBoardStr
popa
end if
; 7. Test whether EDID is good.
; 7a. Signature: 00 FF FF FF FF FF FF 00.
mov esi, edid
cmp dword [esi], 0xFFFFFF00
jnz .fail
cmp dword [esi+4], 0x00FFFFFF
jnz .fail
; 7b. Checksum must be zero.
xor edx, edx
mov ecx, 80h
@@:
lodsb
add dl, al
loop @b
jnz .fail
; 8. Get width and height from EDID.
xor eax, eax
mov ah, [esi-80h+3Ah]
shr ah, 4
mov al, [esi-80h+38h]
mov [width], eax
mov ah, [esi-80h+3Dh]
shr ah, 4
mov al, [esi-80h+3Bh]
mov [height], eax
; 9. Return.
.fail:
pop edi esi
ret
; reset bus, clear all errors
ResetGMBus:
; look into the PRM
mov dword [esi+4], 80000000h
mov dword [esi+4], 0
mov ecx, 0x10000
@@:
test byte [esi+8+1], 2
loopnz @b
ret
end if
; set resolution [width]*[height]
SetMode:
; 1. Program the registers of videocard.
; look into the PRM
cli
; or byte [esi+7000Ah], 0Ch ; PIPEACONF: disable Display+Cursor Planes
; or byte [esi+7100Ah], 0Ch ; PIPEBCONF: disable Display+Cursor Planes
xor eax, eax
xor edx, edx
cmp [deviceType], pciids_num ;i965_start
jb @f
mov dl, 9Ch - 84h
@@:
; or byte [esi+71403h], 80h ; VGACNTRL: VGA Display Disable
and byte [esi+70080h], not 27h ; CURACNTR: disable cursor A
mov dword [esi+70084h], eax ; CURABASE: force write to CURA* regs
and byte [esi+700C0h], not 27h ; CURBCNTR: disable cursor B
mov dword [esi+700C4h], eax ; CURBBASE: force write to CURB* regs
and byte [esi+70183h], not 80h ; DSPACNTR: disable Primary A Plane
mov dword [esi+edx+70184h], eax ; DSPALINOFF/DSPASURF: force write to DSPA* regs
and byte [esi+71183h], not 80h ; DSPBCNTR: disable Primary B Plane
mov dword [esi+edx+71184h], eax ; DSPBLINOFF/DSPBSURF: force write to DSPB* regs
if 1
cmp [deviceType], pciids_num ;ironlake_start
jae .disable_pipes
mov edx, 10000h
or byte [esi+70024h], 2 ; PIPEASTAT: clear VBLANK status
or byte [esi+71024h], 2 ; PIPEBSTAT: clear VBLANK status
.wait_vblank_preironlake1:
mov ecx, 1000h
loop $
test byte [esi+7000Bh], 80h ; PIPEACONF: pipe A active?
jz @f
test byte [esi+70024h], 2 ; PIPEASTAT: got VBLANK?
jz .wait_vblank_preironlake2
@@:
test byte [esi+7100Bh], 80h ; PIPEBCONF: pipe B active?
jz .disable_pipes
test byte [esi+71024h], 2 ; PIPEBSTAT: got VBLANK?
jnz .disable_pipes
.wait_vblank_preironlake2:
dec edx
jnz .wait_vblank_preironlake1
jmp .not_disabled
.disable_pipes:
end if
and byte [esi+7000Bh], not 80h ; PIPEACONF: disable pipe
and byte [esi+7100Bh], not 80h ; PIPEBCONF: disable pipe
cmp [deviceType], pciids_num ;gen4_start
jb .wait_watching_scanline
; g45 and later: use special flag from PIPE*CONF
mov edx, 10000h
@@:
mov ecx, 1000h
loop $
test byte [esi+7000Bh], 40h ; PIPEACONF: wait until pipe disabled
jz @f
dec edx
jnz @b
jmp .not_disabled
@@:
test byte [esi+7100Bh], 40h ; PIPEBCONF: wait until pipe disabled
jz .disabled
mov ecx, 1000h
loop $
dec edx
jnz @b
jmp .not_disabled
; pineview and before: wait while scanline still changes
.wait_watching_scanline:
mov edx, 1000h
.dis1:
push dword [esi+71000h]
push dword [esi+70000h]
mov ecx, 10000h
loop $
pop eax
xor eax, [esi+70000h]
and eax, 1FFFh
pop eax
jnz .notdis1
xor eax, [esi+71000h]
and eax, 1FFFh
jz .disabled
.notdis1:
dec edx
jnz .dis1
.not_disabled:
sti
jmp .return
.disabled:
lea eax, [esi+61183h]
cmp [deviceType], pciids_num ;ironlake_start
jb @f
add eax, 0xE0000 - 0x60000
@@:
lea edx, [esi+60000h]
test byte [eax], 40h
jz @f
add edx, 1000h
@@:
mov eax, [width]
dec eax
shl eax, 16
mov ax, word [height]
dec eax
mov dword [edx+1Ch], eax ; PIPEASRC: set source image size
ror eax, 16
mov dword [edx+10190h], eax ; for old cards
mov ecx, [width]
add ecx, 15
and ecx, not 15
shl ecx, 2
mov dword [edx+10188h], ecx ; DSPASTRIDE: set scanline length
mov dword [edx+10184h], 0 ; DSPALINOFF: force write to DSPA* registers
and byte [esi+61233h], not 80h ; PFIT_CONTROL: disable panel fitting
or byte [edx+1000Bh], 80h ; PIPEACONF: enable pipe
; and byte [edx+1000Ah], not 0Ch ; PIPEACONF: enable Display+Cursor Planes
or byte [edx+10183h], 80h ; DSPACNTR: enable Display Plane A
sti
; 2. Notify the kernel that resolution has changed.
call GetDisplay
mov edx, [width]
mov dword [eax+8], edx
mov edx, [height]
mov dword [eax+0Ch], edx
mov [eax+18h], ecx
mov eax, [width]
dec eax
dec edx
call SetScreen
.return:
ret
align 4
hellomsg db 'RDC videocard detected, PciId=17F3:' ;VendorID 0x17F3, 'RDC Semiconductor Co.'
pciid_text db '0000'
db ', which is ', 0
knownmsg db 'known',13,10,0
unknownmsg db 'unknown',13,10,0
exitmsg db 'Card detected successfully, exiting driver...',13,10,0
if DEBUG
edidmsg db 'EDID successfully read:',13,10
edid_text rb 8*(16*3+1)
db 0
end if
version:
dd 0x50005
width dd predefined_width
height dd predefined_height
pciids:
dw 0x2010 ; M2010 - appears in eBox-3300MX (Vortex86MX SoC)
dw 0x2012 ; M2012 - appears in eBox-3310MX (Vortex86MX+ SoC)
pciids_num = ($ - pciids) / 2
align 4
deviceType dd ?
edid rb 0x80