WebSVN – Kolibri OS – Diff – /kernel/trunk/bus/usb/uhci.inc



.interval       dd      ?
end virtual
; 1. Initialize ErrorTD to zero.
        and     [edi+uhci_pipe.ErrorTD-sizeof.uhci_pipe], 0
; 2. Initialize HeadTD to the physical address of the first TD.
        push    eax     ; store pointer to the first TD for step 4
        sub     eax, sizeof.uhci_gtd
        call    get_phys_addr
        mov     [edi+uhci_pipe.HeadTD-sizeof.uhci_pipe], eax
; 3. Initialize Token field:
; take DeviceAddress and LowSpeedDevice from the parent pipe,

@@:
        mov     [edi+uhci_pipe.Token-sizeof.uhci_pipe], eax
; 4. Initialize the first TD:
; copy Token from uhci_pipe.Token zeroing reserved bit 20,
; set ControlStatus for future transfers, bit make it inactive,
; set bit 0 in NextTD = "no next TD",
; zero OrigBufferInfo.
        pop     edx     ; restore pointer saved in step 2
        mov     [edx+uhci_gtd.Token-sizeof.uhci_gtd], eax
        and     byte [edx+uhci_gtd.Token+2-sizeof.uhci_gtd], not (1 shl (20-16))
        and     eax, 1 shl 20
        shl     eax, 6
        or      eax, UHCI_INVALID_LENGTH + (3 shl 27)
                ; not processed, inactive, allow 3 errors
        and     [edx+uhci_gtd.OrigBufferInfo-sizeof.uhci_gtd], 0
        mov     [edx+uhci_gtd.ControlStatus-sizeof.uhci_gtd], eax
        mov     [edx+uhci_gtd.NextTD-sizeof.uhci_gtd], 1
; 5. Select the corresponding list and insert to the list.
; 5a. Use Control list for control pipes, Bulk list for bulk pipes.
        lea     edx, [esi+uhci_controller.ControlED.SoftwarePart-sizeof.uhci_controller]

Subversion Repositories Kolibri OS

(root)/kernel/trunk/bus/usb/uhci.inc – Rev 3699 → 3700

Rev 3699		Rev 3700
Line 1383...		Line 1383...
1383	.interval dd ?	1383	.interval dd ?
1384	end virtual	1384	end virtual
1385	; 1. Initialize ErrorTD to zero.	1385	; 1. Initialize ErrorTD to zero.
1386	and [edi+uhci_pipe.ErrorTD-sizeof.uhci_pipe], 0	1386	and [edi+uhci_pipe.ErrorTD-sizeof.uhci_pipe], 0
1387	; 2. Initialize HeadTD to the physical address of the first TD.	1387	; 2. Initialize HeadTD to the physical address of the first TD.
1388	push eax ; store pointer to the first TD for step ?	1388	push eax ; store pointer to the first TD for step 4
1389	sub eax, sizeof.uhci_gtd	1389	sub eax, sizeof.uhci_gtd
1390	call get_phys_addr	1390	call get_phys_addr
1391	mov [edi+uhci_pipe.HeadTD-sizeof.uhci_pipe], eax	1391	mov [edi+uhci_pipe.HeadTD-sizeof.uhci_pipe], eax
1392	; 3. Initialize Token field:	1392	; 3. Initialize Token field:
1393	; take DeviceAddress and LowSpeedDevice from the parent pipe,	1393	; take DeviceAddress and LowSpeedDevice from the parent pipe,
Line 1414...		Line 1414...
1414	@@:	1414	@@:
1415	mov [edi+uhci_pipe.Token-sizeof.uhci_pipe], eax	1415	mov [edi+uhci_pipe.Token-sizeof.uhci_pipe], eax
1416	; 4. Initialize the first TD:	1416	; 4. Initialize the first TD:
1417	; copy Token from uhci_pipe.Token zeroing reserved bit 20,	1417	; copy Token from uhci_pipe.Token zeroing reserved bit 20,
1418	; set ControlStatus for future transfers, bit make it inactive,	1418	; set ControlStatus for future transfers, bit make it inactive,
1419	; set bit 0 in NextTD = "no next TD".	1419	; set bit 0 in NextTD = "no next TD",
-		1420	; zero OrigBufferInfo.
1420	pop edx ; restore pointer saved in step 2	1421	pop edx ; restore pointer saved in step 2
1421	mov [edx+uhci_gtd.Token-sizeof.uhci_gtd], eax	1422	mov [edx+uhci_gtd.Token-sizeof.uhci_gtd], eax
1422	and byte [edx+uhci_gtd.Token+2-sizeof.uhci_gtd], not (1 shl (20-16))	1423	and byte [edx+uhci_gtd.Token+2-sizeof.uhci_gtd], not (1 shl (20-16))
1423	and eax, 1 shl 20	1424	and eax, 1 shl 20
1424	shl eax, 6	1425	shl eax, 6
1425	or eax, UHCI_INVALID_LENGTH + (3 shl 27)	1426	or eax, UHCI_INVALID_LENGTH + (3 shl 27)
1426	; not processed, inactive, allow 3 errors	1427	; not processed, inactive, allow 3 errors
-		1428	and [edx+uhci_gtd.OrigBufferInfo-sizeof.uhci_gtd], 0
1427	mov [edx+uhci_gtd.ControlStatus-sizeof.uhci_gtd], eax	1429	mov [edx+uhci_gtd.ControlStatus-sizeof.uhci_gtd], eax
1428	mov [edx+uhci_gtd.NextTD-sizeof.uhci_gtd], 1	1430	mov [edx+uhci_gtd.NextTD-sizeof.uhci_gtd], 1
1429	; 5. Select the corresponding list and insert to the list.	1431	; 5. Select the corresponding list and insert to the list.
1430	; 5a. Use Control list for control pipes, Bulk list for bulk pipes.	1432	; 5a. Use Control list for control pipes, Bulk list for bulk pipes.
1431	lea edx, [esi+uhci_controller.ControlED.SoftwarePart-sizeof.uhci_controller]	1433	lea edx, [esi+uhci_controller.ControlED.SoftwarePart-sizeof.uhci_controller]