fixed DMA not be stopped issue when gBS->ExitBootServices called.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8058 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -1449,6 +1449,33 @@ EhcCreateUsb2Hc (
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return Ehc;
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}
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/**
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One notified function to stop the Host Controller when gBS->ExitBootServices() called.
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@param Event Pointer to this event
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@param Context Event hanlder private data
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**/
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VOID
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EFIAPI
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EhcExitBootService (
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EFI_EVENT Event,
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VOID *Context
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)
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{
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USB2_HC_DEV *Ehc;
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Ehc = (USB2_HC_DEV *) Context;
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//
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// Stop the Host Controller
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//
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EhcHaltHC (Ehc, EHC_GENERIC_TIMEOUT);
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return;
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}
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/**
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Starting the Usb EHCI Driver.
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@@ -1584,6 +1611,21 @@ EhcDriverBindingStart (
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goto UNINSTALL_USBHC;
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}
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//
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// Create event to stop the HC when exit boot service.
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//
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_NOTIFY,
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EhcExitBootService,
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Ehc,
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&gEfiEventExitBootServicesGuid,
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&Ehc->ExitBootServiceEvent
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);
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if (EFI_ERROR (Status)) {
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goto UNINSTALL_USBHC;
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}
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//
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// Install the component name protocol, don't fail the start
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// because of something for display.
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@@ -1712,6 +1754,10 @@ EhcDriverBindingStop (
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gBS->CloseEvent (Ehc->PollTimer);
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}
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if (Ehc->ExitBootServiceEvent != NULL) {
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gBS->CloseEvent (Ehc->ExitBootServiceEvent);
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}
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EhcFreeSched (Ehc);
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if (Ehc->ControllerNameTable != NULL) {
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@@ -22,6 +22,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#include <Protocol/Usb2HostController.h>
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#include <Protocol/PciIo.h>
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#include <Guid/EventGroup.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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@@ -120,6 +122,12 @@ struct _USB2_HC_DEV {
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EHC_QTD *ShortReadStop;
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EFI_EVENT PollTimer;
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//
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// ExitBootServicesEvent is used to stop the EHC DMA operation
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// after exit boot service.
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//
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EFI_EVENT ExitBootServiceEvent;
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//
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// Asynchronous(bulk and control) transfer schedule data:
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// ReclaimHead is used as the head of the asynchronous transfer
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@@ -71,6 +71,9 @@
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DebugLib
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PcdLib
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[Guids]
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gEfiEventExitBootServicesGuid ## PRODUCES ## Event
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[Protocols]
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gEfiPciIoProtocolGuid ## TO_START
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gEfiUsb2HcProtocolGuid ## BY_START
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