https://git.reactos.org/?p=reactos.git;a=commitdiff;h=aae6dd6073971af6411f1fc5ee9cb0ae70c30503
commit aae6dd6073971af6411f1fc5ee9cb0ae70c30503 Author: Vadim Galyant <[email protected]> AuthorDate: Tue Nov 28 15:02:47 2017 +0900 Commit: Amine Khaldi <[email protected]> CommitDate: Sun Jan 21 19:35:40 2018 +0100 [USBPORT] Implement USBPORT_AllocateBandwidth(). --- drivers/usb/usbport/endpoint.c | 87 +++++++++++++++++++++++++++++++++++++----- 1 file changed, 78 insertions(+), 9 deletions(-) diff --git a/drivers/usb/usbport/endpoint.c b/drivers/usb/usbport/endpoint.c index 49124ae763..1e037f9ff4 100644 --- a/drivers/usb/usbport/endpoint.c +++ b/drivers/usb/usbport/endpoint.c @@ -68,9 +68,19 @@ USBPORT_AllocateBandwidth(IN PDEVICE_OBJECT FdoDevice, ULONG TransferType; ULONG TotalBusBandwidth; ULONG EndpointBandwidth; + ULONG MinBandwidth; + PULONG Bandwidth; + ULONG MaxBandwidth = 0; + ULONG ix; + ULONG Offset; + LONG ScheduleOffset = -1; ULONG Period; + ULONG Factor; + UCHAR Bit; - DPRINT("USBPORT_AllocateBandwidth: ... \n"); + DPRINT("USBPORT_AllocateBandwidth: FdoDevice - %p, Endpoint - %p\n", + FdoDevice, + Endpoint); FdoExtension = FdoDevice->DeviceExtension; EndpointProperties = &Endpoint->EndpointProperties; @@ -87,16 +97,75 @@ USBPORT_AllocateBandwidth(IN PDEVICE_OBJECT FdoDevice, TotalBusBandwidth = FdoExtension->TotalBusBandwidth; EndpointBandwidth = EndpointProperties->UsbBandwidth; Period = EndpointProperties->Period; + Factor = USB2_FRAMES / Period; + ASSERT(Factor); - DPRINT1("USBPORT_AllocateBandwidth: FIXME. \n"); - DPRINT1("USBPORT_AllocateBandwidth: Endpoint - %p, Type - %x, TotalBandwidth - %x, EpBandwidth - %x, Period - %x\n", - Endpoint, - TransferType, - TotalBusBandwidth, - EndpointBandwidth, - Period); + for (Offset = 0; Offset < Period; Offset++) + { + MinBandwidth = TotalBusBandwidth; + Bandwidth = &FdoExtension->Bandwidth[Offset * Factor]; + + for (ix = 0; *Bandwidth >= EndpointBandwidth; ix++) + { + if (MinBandwidth > *Bandwidth) + { + MinBandwidth = *Bandwidth; + } + + Bandwidth++; + + if (Factor <= (ix + 1)) + { + if (MinBandwidth > MaxBandwidth) + { + MaxBandwidth = MinBandwidth; + ScheduleOffset = Offset; + + DPRINT("USBPORT_AllocateBandwidth: ScheduleOffset - %X\n", + ScheduleOffset); + } + + break; + } + } + } + + DPRINT("USBPORT_AllocateBandwidth: ScheduleOffset - %X\n", ScheduleOffset); + + if (ScheduleOffset != -1) + { + EndpointProperties->ScheduleOffset = ScheduleOffset; + + Bandwidth = &FdoExtension->Bandwidth[ScheduleOffset * Factor]; + + for (Factor = USB2_FRAMES / Period; Factor; Factor--) + { + FdoExtension->Bandwidth[ScheduleOffset * Factor] -= EndpointBandwidth; + } + + if (TransferType == USBPORT_TRANSFER_TYPE_INTERRUPT) + { + for (Bit = 0x80; Bit != 0; Bit >>= 1) + { + if ((Period & Bit) != 0) + { + Period = Bit; + break; + } + } + + DPRINT("USBPORT_AllocateBandwidth: FIXME AllocedInterrupt_XXms\n"); + } + else + { + DPRINT("USBPORT_AllocateBandwidth: FIXME AllocedIso\n"); + } + } + + DPRINT("USBPORT_AllocateBandwidth: FIXME USBPORT_UpdateAllocatedBw\n"); - return TRUE; + DPRINT("USBPORT_AllocateBandwidth: ScheduleOffset - %X\n", ScheduleOffset); + return ScheduleOffset != -1; } VOID
