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Rev 4418 Rev 4547
Line 154... Line 154...
154 
; Lower 5 bits must be zero.
 154 
; Lower 5 bits must be zero.
155 
Overlay                 ehci_hardware_td        ?
 155 
Overlay                 ehci_hardware_td        ?
156 
; Working area for the current TD, if there is any.
 156 
; Working area for the current TD, if there is any.
157 
; When TD is retired, it is written to that TD and Overlay is loaded
 157 
; When TD is retired, it is written to that TD and Overlay is loaded
158 
; from the new TD, if any.
 158 
; from the new TD, if any.
159 
BaseList                dd      ?
 - 
 
160 
; Pointer to head of the corresponding pipe list.
 - 
 
161 
ends
 159 
ends
Line 162... Line 160...
162 
 
 160 
 
163 
; This structure describes the static head of every list of pipes.
 161 
; This structure describes the static head of every list of pipes.
164 
; The hardware requires 32-bytes alignment of this structure.
 162 
; The hardware requires 32-bytes alignment of this structure.
Line 291... Line 289...
291 
        dd      ehci_alloc_td
 289 
        dd      ehci_alloc_td
292 
        dd      ehci_free_td
 290 
        dd      ehci_free_td
293 
        dd      ehci_alloc_transfer
 291 
        dd      ehci_alloc_transfer
294 
        dd      ehci_insert_transfer
 292 
        dd      ehci_insert_transfer
295 
        dd      ehci_new_device
 293 
        dd      ehci_new_device
- 
 
 294 
        dd      ehci_disable_pipe
- 
 
 295 
        dd      ehci_enable_pipe
296 
ehci_name db    'EHCI',0
 296 
ehci_name db    'EHCI',0
297 
endg
 297 
endg
Line 298... Line 298...
298 
 
 298 
 
299 
; =============================================================================
 299 
; =============================================================================
Line 996... Line 996...
996 
.interrupt_common:
 996 
.interrupt_common:
997 
        test    edx, edx
 997 
        test    edx, edx
998 
        jz      .return0
 998 
        jz      .return0
999 
        mov     word [edi+ehci_pipe.Flags-sizeof.ehci_pipe], ax
 999 
        mov     word [edi+ehci_pipe.Flags-sizeof.ehci_pipe], ax
1000 
.insert:
 1000 
.insert:
1001 
        mov     [edi+ehci_pipe.BaseList-sizeof.ehci_pipe], edx
 1001 
        mov     [edi+usb_pipe.BaseList], edx
1002 
; Insert to the head of the corresponding list.
 1002 
; Insert to the head of the corresponding list.
1003 
; Note: inserting to the head guarantees that the list traverse in
 1003 
; Note: inserting to the head guarantees that the list traverse in
1004 
; ehci_process_updated_schedule, once started, will not interact with new pipes.
 1004 
; ehci_process_updated_schedule, once started, will not interact with new pipes.
1005 
; However, we still need to ensure that links in the new pipe (edi.NextVirt)
 1005 
; However, we still need to ensure that links in the new pipe (edi.NextVirt)
1006 
; are initialized before links to the new pipe (edx.NextVirt).
 1006 
; are initialized before links to the new pipe (edx.NextVirt).
Line 1910... Line 1910...
1910 
        jmp     .interrupt_common
 1910 
        jmp     .interrupt_common
1911 
.interrupt_fs:
 1911 
.interrupt_fs:
1912 
        call    ehci_fs_interrupt_list_unlink
 1912 
        call    ehci_fs_interrupt_list_unlink
1913 
.interrupt_common:
 1913 
.interrupt_common:
1914 
@@:
 1914 
@@:
- 
 
 1915 
        ret
- 
 
 1916 
endp
- 
 
 1917 
 
- 
 
 1918 
; This procedure temporarily removes the given pipe from hardware queue.
- 
 
 1919 
; esi -> usb_controller, ebx -> usb_pipe
- 
 
 1920 
proc ehci_disable_pipe
1915 
        mov     edx, [ebx+usb_pipe.NextVirt]
 1921 
        mov     eax, [ebx+ehci_pipe.NextQH-sizeof.ehci_pipe]
1916 
        mov     eax, [ebx+usb_pipe.PrevVirt]
 1922 
        mov     ecx, [ebx+usb_pipe.PrevVirt]
- 
 
 1923 
        mov     edx, esi
- 
 
 1924 
        sub     edx, ecx
- 
 
 1925 
        cmp     edx, sizeof.ehci_controller
- 
 
 1926 
        jb      .prev_is_static
- 
 
 1927 
        mov     [ecx+ehci_pipe.NextQH-sizeof.ehci_pipe], eax
- 
 
 1928 
        ret
- 
 
 1929 
.prev_is_static:
- 
 
 1930 
        mov     [ecx+ehci_static_ep.NextQH-ehci_static_ep.SoftwarePart], eax
- 
 
 1931 
        ret
- 
 
 1932 
endp
- 
 
 1933 
 
- 
 
 1934 
; This procedure reinserts the given pipe to hardware queue
- 
 
 1935 
; after ehci_disable_pipe, with clearing transfer queue.
- 
 
 1936 
; esi -> usb_controller, ebx -> usb_pipe
- 
 
 1937 
; edx -> current descriptor, eax -> new last descriptor
- 
 
 1938 
proc ehci_enable_pipe
- 
 
 1939 
; 1. Clear transfer queue.
- 
 
 1940 
; 1a. Clear status bits so that the controller will try to advance the queue
- 
 
 1941 
; without doing anything, keep DataToggle and PID bits.
- 
 
 1942 
        and     [ebx+ehci_pipe.Overlay.Token-sizeof.ehci_pipe], 80000000h
- 
 
 1943 
; 1b. Set [Alternate]NextTD to physical address of the new last descriptor.
- 
 
 1944 
        sub     eax, sizeof.ehci_gtd
- 
 
 1945 
        invoke  GetPhysAddr
1917 
        mov     [edx+usb_pipe.PrevVirt], eax
 1946 
        mov     [ebx+ehci_pipe.HeadTD-sizeof.ehci_pipe], eax
- 
 
 1947 
        mov     [ebx+ehci_pipe.Overlay.NextTD-sizeof.ehci_pipe], eax
- 
 
 1948 
        mov     [ebx+ehci_pipe.Overlay.AlternateNextTD-sizeof.ehci_pipe], eax
- 
 
 1949 
; 2. Reinsert the pipe to hardware queue.
- 
 
 1950 
        lea     eax, [ebx-sizeof.ehci_pipe]
- 
 
 1951 
        invoke  GetPhysAddr
- 
 
 1952 
        inc     eax
- 
 
 1953 
        inc     eax
1918 
        mov     [eax+usb_pipe.NextVirt], edx
 1954 
        mov     ecx, [ebx+usb_pipe.PrevVirt]
1919 
        mov     edx, esi
 1955 
        mov     edx, esi
1920 
        sub     edx, eax
 1956 
        sub     edx, ecx
1921 
        cmp     edx, sizeof.ehci_controller
 1957 
        cmp     edx, sizeof.ehci_controller
1922 
        mov     edx, [ebx+ehci_pipe.NextQH-sizeof.ehci_pipe]
 - 
 
1923 
        jb      .prev_is_static
 1958 
        jb      .prev_is_static
- 
 
 1959 
        mov     edx, [ecx+ehci_pipe.NextQH-sizeof.ehci_pipe]
1924 
        mov     [eax+ehci_pipe.NextQH-sizeof.ehci_pipe], edx
 1960 
        mov     [ebx+ehci_pipe.NextQH-sizeof.ehci_pipe], edx
- 
 
 1961 
        mov     [ecx+ehci_pipe.NextQH-sizeof.ehci_pipe], eax
1925 
        ret
 1962 
        ret
1926 
.prev_is_static:
 1963 
.prev_is_static:
- 
 
 1964 
        mov     edx, [ecx+ehci_static_ep.NextQH-ehci_static_ep.SoftwarePart]
- 
 
 1965 
        mov     [ebx+ehci_pipe.NextQH-sizeof.ehci_pipe], edx
1927 
        mov     [eax+ehci_static_ep.NextQH-ehci_static_ep.SoftwarePart], edx
 1966 
        mov     [ecx+ehci_static_ep.NextQH-ehci_static_ep.SoftwarePart], eax
1928 
        ret
 1967 
        ret
1929 
endp
 1968 
endp
Line 1930... Line 1969...
1930 
 
 1969 
 
1931 
proc ehci_alloc_td
 1970 
proc ehci_alloc_td