https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c3803bed8a31f9ac138b1625d5c86187676d7bca
commit c3803bed8a31f9ac138b1625d5c86187676d7bca Author: Vadim Galyant <[email protected]> AuthorDate: Wed Nov 29 23:25:12 2017 +0900 Commit: Amine Khaldi <[email protected]> CommitDate: Sun Jan 21 19:35:43 2018 +0100 [USBPORT] Add USB2_CheckTtEndpointInsert(). --- drivers/usb/usbport/usb2.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/usb/usbport/usb2.c b/drivers/usb/usbport/usb2.c index 080d48cf21..ad8375db20 100644 --- a/drivers/usb/usbport/usb2.c +++ b/drivers/usb/usbport/usb2.c @@ -38,6 +38,52 @@ USB2_AddDataBitStuff(IN USHORT DataTime) return (DataTime + (DataTime / 16)); } +BOOLEAN +NTAPI +USB2_CheckTtEndpointInsert(IN PUSB2_TT_ENDPOINT nextTtEndpoint, + IN PUSB2_TT_ENDPOINT TtEndpoint) +{ + ULONG TransferType; + + DPRINT("USB2_CheckTtEndpointInsert: nextTtEndpoint - %p, TtEndpoint - %p\n", + nextTtEndpoint, + TtEndpoint); + + ASSERT(TtEndpoint); + + if (TtEndpoint->CalcBusTime >= (USB2_FS_MAX_PERIODIC_ALLOCATION / 2)) + { + DPRINT1("USB2_CheckTtEndpointInsert: Result - FALSE\n"); + return FALSE; + } + + if (!nextTtEndpoint) + { + DPRINT("USB2_CheckTtEndpointInsert: Result - TRUE\n"); + return TRUE; + } + + TransferType = TtEndpoint->TtEndpointParams.TransferType; + + if (nextTtEndpoint->ActualPeriod < TtEndpoint->ActualPeriod && + TransferType == USBPORT_TRANSFER_TYPE_INTERRUPT) + { + DPRINT("USB2_CheckTtEndpointInsert: Result - TRUE\n"); + return TRUE; + } + + if ((nextTtEndpoint->ActualPeriod <= TtEndpoint->ActualPeriod && + TransferType == USBPORT_TRANSFER_TYPE_ISOCHRONOUS) || + nextTtEndpoint == TtEndpoint) + { + DPRINT("USB2_CheckTtEndpointInsert: Result - TRUE\n"); + return TRUE; + } + + DPRINT("USB2_CheckTtEndpointInsert: Result - FALSE\n"); + return FALSE; +} + ULONG NTAPI USB2_GetOverhead(IN PUSB2_TT_ENDPOINT TtEndpoint)
