hci.asm

惠普公司bios完整源代码大机密!

	mov	word ptr ds:[0],0		;R56 
	F000_call	Ct_Disable_Shadow
Close_USBRAM_Exit:
	ret

;************************************************************************
;*									*
;*	UHCI POST INTERFACE MODULE					*
;*									*
;************************************************************************

;[]========================================================================[]
;Procedure:	Init_USBRAM
;Function:	Initialize USB_RAM to default value
;Input:		DS,ES=USB_RAM
;Output:	none
;[]========================================================================[]

Init_USBRAM:
;R60 	mov	cx, 2000h			
	mov	cx, 4000h			;R60 
	xor	si, si				
	call	Ex_Clear_Buffer			

;R60;set the upper 8Kb content of shadow RAM to prevent SCT testing error
;R60  	push	es
;R60  	push	di
;R60  	mov	ax,ds
;R60  	mov	es,ax
;R60  	mov	ax,0ffffh		;pattern to fill
;R60  	mov	di,2000h		;start from 8Kb address
;R60  	mov	cx,2000h		;8Kb to fill
;R60;R21A 	rep	stosw
;R60  	rep	stosb			;R21A
;R60  	pop	di	
;R60  	pop	es

ifndef	PATACH_AMIDIAG				;R42 
	mov	word ptr ds:[0], 0AA55h
endif	;PATACH_AMIDIAG				;R42 
;R60  	mov	word ptr ds:[2], 0CB10h
	mov	word ptr ds:[2], 0CB20h		;R60 
	mov	dword ptr ds:[4], 'BSU$'

	mov	ax, ds
	shl	eax, 4
	mov	ds:dUsbRamAddr, eax
;R65	add	eax, offset FrameList
;R65	mov	ds:dFrameListAddr, eax

	call	Ex_Init_FL			

	mov	word ptr wTaskLink, 0FFFFh	;task terminated
	mov	word ptr DevAddrMap+2, 0080h	;root hub device
;R65 - start
ifdef	TWO_USB_HOST
	mov	word ptr DevAddrMap+4, 0080h	;root hub device
endif	;TWO_USB_HOST
;R65 - end

	xor	ax, ax				;R65
	mov	bLedStatus, al			;R65

;R39 - start
;R83 - start
	mov	byte ptr bDelayRate,  125	;default typematic delay
	mov	byte ptr bRepeatRate, 25	;default typematic repeat rate
;R83 - end
;R83	mov	byte ptr bDelayRate,  31	;default typematic delay
;R83	mov	byte ptr bRepeatRate, 6		;default typematic repeat rate

;R65	mov	bUsbFlag, USBKBSUPPORT+USBMSSUPPORT	;R41
ifdef	USB_MOUSE_SUPPORT				;R65
	mov	bDevCtrl, MSDISABLE			;R41
endif	;USB_MOUSE_SUPPORT				;R65

ifdef	IOTRAP_SUPPORT
;R83	mov	bMsStatus1, 0FAh		;dummy code
;R83	mov	bMsDataPacket1, 0FAh		;dummy code

	mov	bMsStatus, 00h			;stream mode
						;disabled
						;scaling 1:1
						;no mouse button pressed
	mov	bResolution, 02h		;4 counts/mm resolution
	mov	bSampleRate, 64h		;100 times/s sample rate

	mov	bCipFlag, 0
	mov	bEmuCmdByte, 65h		;emulated commnad byte
	mov	bRealCmdByte, 65h		;physical command byte
	mov	bTrapEnabled, TRAPENABLE
	mov	wKcCmdProc, offset NullProc SMI_OFFSET
	mov	wKbCmdProc, offset NullProc SMI_OFFSET
	mov	wMsCmdProc, offset NullProc SMI_OFFSET
ENDIF	;IOTRAP_SUPPORT
;R39 - end

	ret

;[]========================================================================[]
;Procedure:	System_Control_Init
;Function:	Initialize system control task
;Input:		none
;Output:	none
;[]========================================================================[]

System_Control_Init:

	; Initialize Root Hub task

;R65	xor	ax, ax
;R65	mov	wPort1Status, ax
;R65	mov	wPort2Status, ax
;R65	mov	bLedStatus, al

;R65 - start
ifdef	TWO_USB_HOST
	cmp	byte ptr bHostNum, 1
	jne	Init_ControlQH
endif	;TWO_USB_HOST
;R65 - end

	mov	si, offset SysCtrlQH
	call	Ex_Init_QH			
	mov	si, offset SysCtrlTD
	call	Ex_Init_TD			
	or	byte ptr [si].bTdControl, ISS_IOC

	mov	si, offset SysCtrlTask
	call	Ex_Init_Task			
	mov	byte ptr [si].bTkDevStatus, TK_WFP
	mov	byte ptr [si].bTkDevAddr, 1
	mov	byte ptr [si].bTkParentHost, 1		;R65
	mov	word ptr [si].wTkInterval, 1024	
	mov	word ptr [si].wTkQueueHead, offset SysCtrlQH
	mov	word ptr [si].wTkTransDesp, offset SysCtrlTD
	mov	word ptr [si].wTkProc, offset System_Control SMI_OFFSET
	call	Ex_Link_Task			

;R83	; Initialize Timer task, and no link at this stage until
;R83	; the USB keyboard is attached.
;R83
;R83	mov	si, offset TimerQH
;R83	call	Ex_Init_QH			
;R83	mov	si, offset TimerTD
;R83	call	Ex_Init_TD			
;R83;R47 	or	byte ptr [si].bTdControl, ISS_IOC
;R83	call	Ex_Init_TimerTD				;R47 
;R83
;R83	mov	si, offset TimerTask
;R83	call	Ex_Init_Task			
;R83	mov	byte ptr [si].bTkDevStatus, TK_WFP
;R83	mov	byte ptr [si].bTkDevAddr, 1
;R83	mov	byte ptr [si].bTkParentHost, 1		;R65
;R83;R41	mov	word ptr [si].wTkInterval, 64
;R83	mov	word ptr [si].wTkInterval, 16		;R41
;R83	mov	word ptr [si].wTkQueueHead, offset TimerQH
;R83	mov	word ptr [si].wTkTransDesp, offset TimerTD
;R83	mov	word ptr [si].wTkProc, offset Proc_Timer SMI_OFFSET
;R83;R50  - start
;R83ifdef   IOTRAP_SUPPORT
;R83        ; Initialize Response task, and no link at this stage until
;R83        ; the keyboard command process need respond to system.
;R83
;R83        mov     si, offset ResponseQH
;R83        call    Ex_Init_QH
;R83        mov     [si].wQhInterval, 4                     ;2ms interval
;R83        call    Ex_Link_QH_to_FL
;R83        mov     si, offset ResponseTD
;R83        call    Ex_Init_TD
;R83;R50A        call    Init_ResponseTD
;R83;R50A        mov     di, offset ResponseQH
;R83;R50A        mov     si, offset ResponseTD
;R83;R50A        call    Link_TD_to_QH
;R83
;R83        mov     si, offset ResponseTask
;R83        call    Ex_Init_Task
;R83        mov     byte ptr [si].bTkDevStatus, TK_WFP
;R83        mov     byte ptr [si].bTkDevAddr, 1             ;dummy device address
;R83	mov	byte ptr [si].bTkParentHost, 1		;R65
;R83        mov     word ptr [si].wTkInterval, 4            ;2ms interval
;R83        mov     word ptr [si].wTkQueueHead, offset ResponseQH
;R83        mov     word ptr [si].wTkTransDesp, offset ResponseTD
;R83        mov     word ptr [si].wTkProc, offset Proc_Response SMI_OFFSET
;R83endif   ;IOTRAP_SUPPORT
;R83;R50  - end

Init_ControlQH:					;R65
	; Link Control Transfer Queue Head for future using
	; and no TD link

;R65	mov	si, offset ControlQH
	mov	si, wControlQHAddr		;R65
	call	Ex_Init_QH			
	mov	word ptr [si].wQhInterval, 1
	call	Ex_Link_QH_to_FL		

	ret

;R83 - start
;[]========================================================================[]
;Procedure:	Init_Timer
;Function:	Initialize Timer task, and skip at this stage until
;		the timer is necessary.
;Input:		none
;Output:	none
;[]========================================================================[]

Init_Timer:
	mov	si, offset TimerQH
	call	Ex_Init_QH
	mov	si, offset TimerTD
	call	Ex_Init_TD

	mov	si, offset TimerTask
	call	Ex_Init_Task
	mov	byte ptr [si].bTkDevAddr, 1             ;dummy device address
	mov	byte ptr [si].bTkParentHost, 1
	mov	word ptr [si].wTkInterval, 4            ;4ms interval
	mov	word ptr [si].wTkQueueHead, offset TimerQH
	mov	word ptr [si].wTkTransDesp, offset TimerTD
	mov	word ptr [si].wTkProc, offset Proc_Timer SMI_OFFSET
	call	Ex_Link_Task
	ret
;R83 - end

;[]========================================================================[]
;Procedure:	Host_Init
;Function:	Initialize host controller
;Input:		none
;Output:	none
;[]========================================================================[]

Host_Init:

;R65	call	Ct_USB_ID
;R65	mov	wHostID, ax

;R38 - start
	; Turn on bus master and io space decoding,
	; avoid that these two bits are not turn-on
	; by PCI kernel.
	mov	cx, wHostID
	add	cx, 4				;command register
	F000_call	Get_PCI
	or	al, 00000111b			;bus master/io space
	F000_call	Set_PCI
;R38 - end

	mov	cx, wHostID
	add	cx, LEGACY_LO
	F000_call	Get_PCI
ifdef	IOTRAP_SUPPORT				
;R39	or	al, USBSMIEN+0Fh		;Enable Trap/SMI on USB IRQ
;R65 - start
ifdef	TWO_USB_HOST
	or	al, USBSMIEN
	cmp	byte ptr bHostNum, 1
	jne	short Not_Enable_IoTrap
	or	al, A20PASSEN+TRAPENABLE
Not_Enable_IoTrap:
else	;TWO_USB_HOST
;R65 - end
	or	al, USBSMIEN+A20PASSEN+TRAPENABLE	;R39;Enable SMI
endif	;TWO_USB_HOST				;R65
else	;IOTRAP_SUPPORT				
	or	al, USBSMIEN			;Enable Trap/SMI on USB IRQ
endif	;IOTRAP_SUPPORT				
	F000_call	Set_PCI

;R65	mov	cx, wHostID
;R65	add	cx, (USBBASE+1)
;R65	F000_call	Get_PCI
;R65	push	ax
;R65	mov	cx, wHostID
;R65	add	cx, USBBASE
;R65	F000_call	Get_PCI
;R65	pop	dx
;R65	mov	ah, dl
;R65	and	al, 0FCh
;R65	mov	ds:wHostIoBase, ax

	; Global Reset

	call	Global_Reset

	; Clear USB Status Register

	mov	ax, 0FFFFh			;write clear
	mov	dx, USBSTS
	call	Ex_Set_Host_Word		

	; USB Interrupt Enable Register

	mov	ax, IOC				;interrupt on complete
	mov	dx, USBINTR
	call	Ex_Set_Host_Word		

	; Frame Number Register

	mov	ax, 0				;Starting from frame 0
	mov	dx, FRNUM
	call	Ex_Set_Host_Word		

	; Frame List Base Address Register

;R65	mov	ax, ds
;R65	shl	eax, 4
;R65	add	eax, offset FrameList
	mov	eax, dFrameListAddr		;R65
	mov	dx, FRBASEADD
	call	Ex_Set_Host_Dword		

	ret

;[]========================================================================[]
;Procedure:	Global_Reset
;Function:	Global host controller reset
;Input:		none
;Output:	none
;[]========================================================================[]

Global_Reset:
	pusha

	; Issue global reset and set maximum packet size to 64

	mov	al, GRESET+MAX_PACKET		;Global reset/max packet=64
	mov	dx, USBCMD
	call	Ex_Set_Host_Byte		

	; Minimum delay time 10ms

	call	Ex_Delay_12ms			

	; Clear reset signal

	mov	al, MAX_PACKET			;max packet=64
	mov	dx, USBCMD
	call	Ex_Set_Host_Byte		

	popa
	ret

;[]========================================================================[]
;Procedure:	Host_Reset
;Function:	Host controller reset
;Input:		none
;Output:	none
;[]========================================================================[]

Host_Reset:
	pusha

	; Issue host controller reset

	mov	al, HCRESET			;Host controller reset
	mov	dx, USBCMD
	call	Ex_Set_Host_Byte		

	popa
	ret

;R65 - start
;[]========================================================================[]
;Procedure:	Init_Host_Data
;Function:	Initialize host controller specific data
;Input:		none
;Output:	none
;[]========================================================================[]
Init_Host_Data:
ifdef	TWO_USB_HOST

	; Get host controllers PCI address

	call	Ct_USB_ID
	mov	wHostID1, ax
	mov	wHostID2, dx

	; Get host controller I/O space

	mov	cx, wHostID1
	add	cx, (USBBASE+1)
	F000_call	Get_PCI
	push	ax
	mov	cx, wHostID1
	add	cx, USBBASE
	F000_call	Get_PCI
	pop	dx
	mov	ah, dl
	and	al, 0FCh
	mov	ds:wHostIoBase1, ax

	mov	cx, wHostID2
	add	cx, (USBBASE+1)
	F000_call	Get_PCI
	push	ax
	mov	cx, wHostID2
	add	cx, USBBASE
	F000_call	Get_PCI
	pop	dx
	mov	ah, dl
	and	al, 0FCh
	mov	ds:wHostIoBase2, ax

	; Set frame list address

	xor	edx, edx
	mov	dx, ds
	shl	edx, 4
	mov	eax, offset FrameList1
	mov	ds:wFrameListAddr1, ax
	add	eax, edx
	mov	ds:dFrameListAddr1, eax
	mov	eax, offset FrameList2
	mov	ds:wFrameListAddr2, ax
	add	eax, edx
	mov	ds:dFrameListAddr2, eax

	; Set control QH/TD address

	mov	ax, offset ControlQH1
	mov	wControlQHAddr1, ax
	mov	ax, offset ControlTD1
	mov	wControlTDAddr1, ax

	mov	ax, offset ControlQH2
	mov	wControlQHAddr2, ax
	mov	ax, offset ControlTD2
	mov	wControlTDAddr2, ax

	ret

else	;TWO_USB_HOST

	; Get host controllers PCI address

	call	Ct_USB_ID
	mov	wHostID, ax

	; Get host controller I/O space

	mov	cx, wHostID
	add	cx, (USBBASE+1)
	F000_call	Get_PCI
	push	ax
	mov	cx, wHostID
	add	cx, USBBASE
	F000_call	Get_PCI
	pop	dx
	mov	ah, dl
	and	al, 0FCh
	mov	ds:wHostIoBase, ax

	; Set frame list address

	xor	edx, edx
	mov	dx, ds
	shl	edx, 4
	mov	eax, offset FrameList
	mov	ds:wFrameListAddr, ax
	add	eax, edx
	mov	ds:dFrameListAddr, eax

	; Set control QH/TD address

	mov	ax, offset ControlQH
	mov	wControlQHAddr, ax
	mov	ax, offset ControlTD
	mov	wControlTDAddr, ax

	ret

endif	;TWO_USB_HOST
;R65 - end

;[]==========================================================