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        add     eax, uhci_controller.IntEDs

        add     eax, uhci_controller.IntEDs

        call    get_phys_addr

        call    get_phys_addr

; 2b. Fill first 32 entries.

; 2b. Fill first 32 entries.

        inc     eax

        inc     eax

        inc     eax     ; set QH bit for uhci_pipe.NextQH

        inc     eax     ; set QH bit for uhci_pipe.NextQH

        mov     edx, ecx

        mov     edx, ecx

@@:

@@:

        stosd

        stosd

        add     eax, sizeof.uhci_static_ep

        add     eax, sizeof.uhci_static_ep

        loop    @b

        loop    @b

; 5e. Host reset.

; 5e. Host reset.

        mov     edx, edi

        mov     edx, edi

        mov     ax, 2

        mov     ax, 2

        out     dx, ax

        out     dx, ax

; 5f. Wait up to 10ms.

; 5f. Wait up to 10ms.

@@:

@@:

        push    esi

        push    esi

        call    delay_ms

        call    delay_ms

        pop     esi

        pop     esi

        in      ax, dx

        in      ax, dx

        test    al, 2

        test    al, 2

        loopnz  @b

        loopnz  @b

@@:

@@:

if 0

if 0

; emergency variant for tests - always wait 10 ms

; emergency variant for tests - always wait 10 ms

; wait 10 ms

; wait 10 ms

        push    esi

        push    esi

        call    delay_ms

        call    delay_ms

        pop     esi

        pop     esi

; clear reset signal

; clear reset signal

        xor     eax, eax

        xor     eax, eax

        out     dx, ax

        out     dx, ax

;   other errors just lead to retrying the transaction;

;   other errors just lead to retrying the transaction;

;   if babble is detected, return the corresponding error;

;   if babble is detected, return the corresponding error;

; * if several non-fatal errors have occured during transaction retries,

; * if several non-fatal errors have occured during transaction retries,

;   all corresponding bits are set. In this case, return some error code,

;   all corresponding bits are set. In this case, return some error code,

;   the order is quite arbitrary.

;   the order is quite arbitrary.

        test    al, 1 shl (22-16)       ; not Stalled?

        test    al, 1 shl (22-16)       ; not Stalled?

        jz      .know_error

        jz      .know_error

        mov     cl, USB_STATUS_OVERRUN

        mov     cl, USB_STATUS_OVERRUN

        test    al, 1 shl (20-16)       ; Babble detected?

        test    al, 1 shl (20-16)       ; Babble detected?

        jnz     .know_error

        jnz     .know_error

        and     ah, not 2

        and     ah, not 2

        out     dx, ax

        out     dx, ax

; 2. Status bits in UHCI are invalid during reset signalling.

; 2. Status bits in UHCI are invalid during reset signalling.

; Wait a millisecond while status bits become valid again.

; Wait a millisecond while status bits become valid again.

        push    esi

        push    esi

        call    delay_ms

        call    delay_ms

        pop     esi

        pop     esi

; 3. ConnectStatus bit is zero during reset and becomes 1 during step 2;

; 3. ConnectStatus bit is zero during reset and becomes 1 during step 2;

; some controllers interpret this as a (fake) connect event.

; some controllers interpret this as a (fake) connect event.

; Enable port and clear status change notification.

; Enable port and clear status change notification.

; based on the current bandwidth distribution and the requested bandwidth.

; based on the current bandwidth distribution and the requested bandwidth.

; This could fail if the requested bandwidth is not available;

; This could fail if the requested bandwidth is not available;

; if so, return an error.

; if so, return an error.

        lea     edx, [esi + uhci_controller.IntEDs - sizeof.uhci_controller]

        lea     edx, [esi + uhci_controller.IntEDs - sizeof.uhci_controller]

        lea     eax, [esi + uhci_controller.IntEDs + 32*sizeof.uhci_static_ep - sizeof.uhci_controller]

        lea     eax, [esi + uhci_controller.IntEDs + 32*sizeof.uhci_static_ep - sizeof.uhci_controller]

        call    usb1_select_interrupt_list

        call    usb1_select_interrupt_list

        test    edx, edx

        test    edx, edx

        jz      .return0

        jz      .return0

.insert:

.insert:

; Insert to the head of the corresponding list.

; Insert to the head of the corresponding list.