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-rw-r--r--MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h528
1 files changed, 447 insertions, 81 deletions
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h
index 953ba4c5c2..3793d9c1c2 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h
@@ -29,42 +29,41 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Library/UefiBootServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiLib.h>
-#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
#include <IndustryStandard/Pci.h>
-typedef struct _USB_XHCI_DEV USB_XHCI_DEV;
-typedef struct _USB_DEV_CONTEXT USB_DEV_CONTEXT;
+typedef struct _USB_XHCI_INSTANCE USB_XHCI_INSTANCE;
+typedef struct _USB_DEV_CONTEXT USB_DEV_CONTEXT;
#include "XhciReg.h"
#include "XhciSched.h"
#include "ComponentName.h"
//
-// XHC timeout experience values
+// Convert millisecond to microsecond.
//
-#define XHC_1_MICROSECOND 1
-#define XHC_1_MILLISECOND (1000 * XHC_1_MICROSECOND)
-#define XHC_1_SECOND (1000 * XHC_1_MILLISECOND)
-
+#define XHC_1_MILLISECOND (1000)
//
-// XHCI register operation timeout, set by experience
+// XHC generic timeout experience values.
+// The unit is microsecond, setting it as 10ms.
//
-#define XHC_RESET_TIMEOUT (1 * XHC_1_SECOND)
-#define XHC_GENERIC_TIMEOUT (10 * XHC_1_MILLISECOND)
-
+#define XHC_GENERIC_TIMEOUT (10 * 1000)
//
-// Wait for roothub port power stable, refers to Spec[XHCI1.0-2.3.9]
+// XHC reset timeout experience values.
+// The unit is microsecond, setting it as 1s.
//
-#define XHC_ROOT_PORT_RECOVERY_STALL (20 * XHC_1_MILLISECOND)
-
+#define XHC_RESET_TIMEOUT (1000 * 1000)
+//
+// XHC delay experience value for polling operation.
+// The unit is microsecond, set it as 1ms.
//
-// Sync and Async transfer polling interval, set by experience,
-// and the unit of Async is 100us, means 50ms as interval.
+#define XHC_POLL_DELAY (1000)
//
-#define XHC_SYNC_POLL_INTERVAL (20 * XHC_1_MILLISECOND)
-#define XHC_ASYNC_POLL_INTERVAL (50 * 10000U)
+// XHC async transfer timer interval, set by experience.
+// The unit is 100us, takes 50ms as interval.
+//
+#define XHC_ASYNC_TIMER_INTERVAL EFI_TIMER_PERIOD_MILLISECONDS(50)
//
// XHC raises TPL to TPL_NOTIFY to serialize all its operations
@@ -93,22 +92,30 @@ typedef struct _USB_DEV_CONTEXT USB_DEV_CONTEXT;
#define EFI_LIST_CONTAINER(Entry, Type, Field) BASE_CR(Entry, Type, Field)
-#define XHC_LOW_32BIT(Addr64) ((UINT32)(((UINTN)(Addr64)) & 0xFFFFFFFF))
-#define XHC_HIGH_32BIT(Addr64) ((UINT32)(RShiftU64((UINTN)(Addr64), 32) & 0xFFFFFFFF))
-#define XHC_BIT_IS_SET(Data, Bit) ((BOOLEAN)(((Data) & (Bit)) == (Bit)))
+#define XHC_LOW_32BIT(Addr64) ((UINT32)(((UINTN)(Addr64)) & 0xFFFFFFFF))
+#define XHC_HIGH_32BIT(Addr64) ((UINT32)(RShiftU64((UINTN)(Addr64), 32) & 0xFFFFFFFF))
+#define XHC_BIT_IS_SET(Data, Bit) ((BOOLEAN)(((Data) & (Bit)) == (Bit)))
#define XHC_REG_BIT_IS_SET(Xhc, Offset, Bit) \
(XHC_BIT_IS_SET(XhcReadOpReg ((Xhc), (Offset)), (Bit)))
-#define XHCI_IS_DATAIN(EndpointAddr) XHC_BIT_IS_SET((EndpointAddr), 0x80)
+#define XHCI_IS_DATAIN(EndpointAddr) XHC_BIT_IS_SET((EndpointAddr), 0x80)
-#define USB_XHCI_DEV_SIGNATURE SIGNATURE_32 ('x', 'h', 'c', 'i')
-#define XHC_FROM_THIS(a) CR(a, USB_XHCI_DEV, Usb2Hc, USB_XHCI_DEV_SIGNATURE)
+#define XHCI_INSTANCE_SIG SIGNATURE_32 ('x', 'h', 'c', 'i')
+#define XHC_FROM_THIS(a) CR(a, USB_XHCI_INSTANCE, Usb2Hc, XHCI_INSTANCE_SIG)
#define USB_DESC_TYPE_HUB 0x29
#define USB_DESC_TYPE_HUB_SUPER_SPEED 0x2a
//
+// The RequestType in EFI_USB_DEVICE_REQUEST is composed of
+// three fields: One bit direction, 2 bit type, and 5 bit
+// target.
+//
+#define USB_REQUEST_TYPE(Dir, Type, Target) \
+ ((UINT8)((((Dir) == EfiUsbDataIn ? 0x01 : 0) << 7) | (Type) | (Target)))
+
+//
// Xhci Data and Ctrl Structures
//
#pragma pack(1)
@@ -129,7 +136,63 @@ typedef struct {
} EFI_USB_HUB_DESCRIPTOR;
#pragma pack()
-struct _USB_XHCI_DEV {
+struct _USB_DEV_CONTEXT {
+ //
+ // Whether this entry in UsbDevContext array is used or not.
+ //
+ BOOLEAN Enabled;
+ //
+ // The slot id assigned to the new device through XHCI's Enable_Slot cmd.
+ //
+ UINT8 SlotId;
+ //
+ // The route string presented an attached usb device.
+ //
+ USB_DEV_ROUTE RouteString;
+ //
+ // The route string of parent device if it exists. Otherwise it's zero.
+ //
+ USB_DEV_ROUTE ParentRouteString;
+ //
+ // The actual device address assigned by XHCI through Address_Device command.
+ //
+ UINT8 XhciDevAddr;
+ //
+ // The requested device address from UsbBus driver through Set_Address standard usb request.
+ // As XHCI spec replaces this request with Address_Device command, we have to record the
+ // requested device address and establish a mapping relationship with the actual device address.
+ // Then UsbBus driver just need to be aware of the requested device address to access usb device
+ // through EFI_USB2_HC_PROTOCOL. Xhci driver would be responsible for translating it to actual
+ // device address and access the actual device.
+ //
+ UINT8 BusDevAddr;
+ //
+ // The pointer to the input device context.
+ //
+ VOID *InputContext;
+ //
+ // The pointer to the output device context.
+ //
+ VOID *OutputContext;
+ //
+ // The transfer queue for every endpoint.
+ //
+ VOID *EndpointTransferRing[31];
+ //
+ // The device descriptor which is stored to support XHCI's Evaluate_Context cmd.
+ //
+ EFI_USB_DEVICE_DESCRIPTOR DevDesc;
+ //
+ // As a usb device may include multiple configuration descriptors, we dynamically allocate an array
+ // to store them.
+ // Note that every configuration descriptor stored here includes those lower level descriptors,
+ // such as Interface descriptor, Endpoint descriptor, and so on.
+ // These information is used to support XHCI's Config_Endpoint cmd.
+ //
+ EFI_USB_CONFIG_DESCRIPTOR **ConfDesc;
+};
+
+struct _USB_XHCI_INSTANCE {
UINT32 Signature;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 OriginalPciAttributes;
@@ -189,68 +252,17 @@ struct _USB_XHCI_DEV {
//
EFI_UNICODE_STRING_TABLE *ControllerNameTable;
-};
-
-struct _USB_DEV_CONTEXT {
- //
- // Whether this entry in UsbDevContext array is used or not.
- //
- BOOLEAN Enabled;
- //
- // The slot id assigned to the new device through XHCI's Enable_Slot cmd.
- //
- UINT8 SlotId;
- //
- // The route string presented an attached usb device.
- //
- USB_DEV_ROUTE RouteString;
- //
- // The route string of parent device if it exists. Otherwise it's zero.
- //
- USB_DEV_ROUTE ParentRouteString;
- //
- // The actual device address assigned by XHCI through Address_Device command.
- //
- UINT8 XhciDevAddr;
- //
- // The requested device address from UsbBus driver through Set_Address standard usb request.
- // As XHCI spec replaces this request with Address_Device command, we have to record the
- // requested device address and establish a mapping relationship with the actual device address.
- // Then UsbBus driver just need to be aware of the requested device address to access usb device
- // through EFI_USB2_HC_PROTOCOL. Xhci driver would be responsible for translating it to actual
- // device address and access the actual device.
- //
- UINT8 BusDevAddr;
- //
- // The pointer to the input device context.
- //
- VOID *InputContext;
- //
- // The pointer to the output device context.
- //
- VOID *OutputDevContxt;
- //
- // The transfer queue for every endpoint.
- //
- VOID *EndpointTransferRing[31];
- //
- // The device descriptor which is stored to support XHCI's Evaluate_Context cmd.
- //
- EFI_USB_DEVICE_DESCRIPTOR DevDesc;
//
- // As a usb device may include multiple configuration descriptors, we dynamically allocate an array
- // to store them.
- // Note that every configuration descriptor stored here includes those lower level descriptors,
- // such as Interface descriptor, Endpoint descriptor, and so on.
- // These information is used to support XHCI's Config_Endpoint cmd.
+ // Store device contexts managed by XHCI instance
+ // The array supports up to 255 devices, entry 0 is reserved and should not be used.
//
- EFI_USB_CONFIG_DESCRIPTOR **ConfDesc;
+ USB_DEV_CONTEXT UsbDevContext[256];
};
+
extern EFI_DRIVER_BINDING_PROTOCOL gXhciDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gXhciComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gXhciComponentName2;
-extern USB_DEV_CONTEXT UsbDevContext[];
/**
Test to see if this driver supports ControllerHandle. Any
@@ -317,6 +329,109 @@ XhcDriverBindingStop (
);
/**
+ Retrieves the capability of root hub ports.
+
+ @param This The EFI_USB2_HC_PROTOCOL instance.
+ @param MaxSpeed Max speed supported by the controller.
+ @param PortNumber Number of the root hub ports.
+ @param Is64BitCapable Whether the controller supports 64-bit memory
+ addressing.
+
+ @retval EFI_SUCCESS Host controller capability were retrieved successfully.
+ @retval EFI_INVALID_PARAMETER Either of the three capability pointer is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcGetCapability (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ OUT UINT8 *MaxSpeed,
+ OUT UINT8 *PortNumber,
+ OUT UINT8 *Is64BitCapable
+ );
+
+/**
+ Provides software reset for the USB host controller.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param Attributes A bit mask of the reset operation to perform.
+
+ @retval EFI_SUCCESS The reset operation succeeded.
+ @retval EFI_INVALID_PARAMETER Attributes is not valid.
+ @retval EFI_UNSUPPOURTED The type of reset specified by Attributes is
+ not currently supported by the host controller.
+ @retval EFI_DEVICE_ERROR Host controller isn't halted to reset.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcReset (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT16 Attributes
+ );
+
+/**
+ Retrieve the current state of the USB host controller.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param State Variable to return the current host controller
+ state.
+
+ @retval EFI_SUCCESS Host controller state was returned in State.
+ @retval EFI_INVALID_PARAMETER State is NULL.
+ @retval EFI_DEVICE_ERROR An error was encountered while attempting to
+ retrieve the host controller's current state.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcGetState (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ OUT EFI_USB_HC_STATE *State
+ );
+
+/**
+ Sets the USB host controller to a specific state.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param State The state of the host controller that will be set.
+
+ @retval EFI_SUCCESS The USB host controller was successfully placed
+ in the state specified by State.
+ @retval EFI_INVALID_PARAMETER State is invalid.
+ @retval EFI_DEVICE_ERROR Failed to set the state due to device error.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcSetState (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN EFI_USB_HC_STATE State
+ );
+
+/**
+ Retrieves the current status of a USB root hub port.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param PortNumber The root hub port to retrieve the state from.
+ This value is zero-based.
+ @param PortStatus Variable to receive the port state.
+
+ @retval EFI_SUCCESS The status of the USB root hub port specified.
+ by PortNumber was returned in PortStatus.
+ @retval EFI_INVALID_PARAMETER PortNumber is invalid.
+ @retval EFI_DEVICE_ERROR Can't read register.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcGetRootHubPortStatus (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT8 PortNumber,
+ OUT EFI_USB_PORT_STATUS *PortStatus
+ );
+
+/**
Sets a feature for the specified root hub port.
@param This This EFI_USB2_HC_PROTOCOL instance.
@@ -359,4 +474,255 @@ XhcClearRootHubPortFeature (
IN EFI_USB_PORT_FEATURE PortFeature
);
+/**
+ Submits control transfer to a target USB device.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param DeviceAddress The target device address.
+ @param DeviceSpeed Target device speed.
+ @param MaximumPacketLength Maximum packet size the default control transfer
+ endpoint is capable of sending or receiving.
+ @param Request USB device request to send.
+ @param TransferDirection Specifies the data direction for the data stage
+ @param Data Data buffer to be transmitted or received from USB
+ device.
+ @param DataLength The size (in bytes) of the data buffer.
+ @param Timeout Indicates the maximum timeout, in millisecond.
+ @param Translator Transaction translator to be used by this device.
+ @param TransferResult Return the result of this control transfer.
+
+ @retval EFI_SUCCESS Transfer was completed successfully.
+ @retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resources.
+ @retval EFI_INVALID_PARAMETER Some parameters are invalid.
+ @retval EFI_TIMEOUT Transfer failed due to timeout.
+ @retval EFI_DEVICE_ERROR Transfer failed due to host controller or device error.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcControlTransfer (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT8 DeviceAddress,
+ IN UINT8 DeviceSpeed,
+ IN UINTN MaximumPacketLength,
+ IN EFI_USB_DEVICE_REQUEST *Request,
+ IN EFI_USB_DATA_DIRECTION TransferDirection,
+ IN OUT VOID *Data,
+ IN OUT UINTN *DataLength,
+ IN UINTN Timeout,
+ IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
+ OUT UINT32 *TransferResult
+ );
+
+/**
+ Submits bulk transfer to a bulk endpoint of a USB device.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param DeviceAddress Target device address.
+ @param EndPointAddress Endpoint number and its direction in bit 7.
+ @param DeviceSpeed Device speed, Low speed device doesn't support bulk
+ transfer.
+ @param MaximumPacketLength Maximum packet size the endpoint is capable of
+ sending or receiving.
+ @param DataBuffersNumber Number of data buffers prepared for the transfer.
+ @param Data Array of pointers to the buffers of data to transmit
+ from or receive into.
+ @param DataLength The lenght of the data buffer.
+ @param DataToggle On input, the initial data toggle for the transfer;
+ On output, it is updated to to next data toggle to
+ use of the subsequent bulk transfer.
+ @param Timeout Indicates the maximum time, in millisecond, which
+ the transfer is allowed to complete.
+ @param Translator A pointr to the transaction translator data.
+ @param TransferResult A pointer to the detailed result information of the
+ bulk transfer.
+
+ @retval EFI_SUCCESS The transfer was completed successfully.
+ @retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resource.
+ @retval EFI_INVALID_PARAMETER Some parameters are invalid.
+ @retval EFI_TIMEOUT The transfer failed due to timeout.
+ @retval EFI_DEVICE_ERROR The transfer failed due to host controller error.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcBulkTransfer (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT8 DeviceAddress,
+ IN UINT8 EndPointAddress,
+ IN UINT8 DeviceSpeed,
+ IN UINTN MaximumPacketLength,
+ IN UINT8 DataBuffersNumber,
+ IN OUT VOID *Data[EFI_USB_MAX_BULK_BUFFER_NUM],
+ IN OUT UINTN *DataLength,
+ IN OUT UINT8 *DataToggle,
+ IN UINTN Timeout,
+ IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
+ OUT UINT32 *TransferResult
+ );
+
+/**
+ Submits an asynchronous interrupt transfer to an
+ interrupt endpoint of a USB device.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param DeviceAddress Target device address.
+ @param EndPointAddress Endpoint number and its direction encoded in bit 7
+ @param DeviceSpeed Indicates device speed.
+ @param MaximumPacketLength Maximum packet size the target endpoint is capable
+ @param IsNewTransfer If TRUE, to submit an new asynchronous interrupt
+ transfer If FALSE, to remove the specified
+ asynchronous interrupt.
+ @param DataToggle On input, the initial data toggle to use; on output,
+ it is updated to indicate the next data toggle.
+ @param PollingInterval The he interval, in milliseconds, that the transfer
+ is polled.
+ @param DataLength The length of data to receive at the rate specified
+ by PollingInterval.
+ @param Translator Transaction translator to use.
+ @param CallBackFunction Function to call at the rate specified by
+ PollingInterval.
+ @param Context Context to CallBackFunction.
+
+ @retval EFI_SUCCESS The request has been successfully submitted or canceled.
+ @retval EFI_INVALID_PARAMETER Some parameters are invalid.
+ @retval EFI_OUT_OF_RESOURCES The request failed due to a lack of resources.
+ @retval EFI_DEVICE_ERROR The transfer failed due to host controller error.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcAsyncInterruptTransfer (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT8 DeviceAddress,
+ IN UINT8 EndPointAddress,
+ IN UINT8 DeviceSpeed,
+ IN UINTN MaximumPacketLength,
+ IN BOOLEAN IsNewTransfer,
+ IN OUT UINT8 *DataToggle,
+ IN UINTN PollingInterval,
+ IN UINTN DataLength,
+ IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
+ IN EFI_ASYNC_USB_TRANSFER_CALLBACK CallBackFunction,
+ IN VOID *Context OPTIONAL
+ );
+
+/**
+ Submits synchronous interrupt transfer to an interrupt endpoint
+ of a USB device.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param DeviceAddress Target device address.
+ @param EndPointAddress Endpoint number and its direction encoded in bit 7
+ @param DeviceSpeed Indicates device speed.
+ @param MaximumPacketLength Maximum packet size the target endpoint is capable
+ of sending or receiving.
+ @param Data Buffer of data that will be transmitted to USB
+ device or received from USB device.
+ @param DataLength On input, the size, in bytes, of the data buffer; On
+ output, the number of bytes transferred.
+ @param DataToggle On input, the initial data toggle to use; on output,
+ it is updated to indicate the next data toggle.
+ @param Timeout Maximum time, in second, to complete.
+ @param Translator Transaction translator to use.
+ @param TransferResult Variable to receive the transfer result.
+
+ @return EFI_SUCCESS The transfer was completed successfully.
+ @return EFI_OUT_OF_RESOURCES The transfer failed due to lack of resource.
+ @return EFI_INVALID_PARAMETER Some parameters are invalid.
+ @return EFI_TIMEOUT The transfer failed due to timeout.
+ @return EFI_DEVICE_ERROR The failed due to host controller or device error
+
+**/
+EFI_STATUS
+EFIAPI
+XhcSyncInterruptTransfer (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT8 DeviceAddress,
+ IN UINT8 EndPointAddress,
+ IN UINT8 DeviceSpeed,
+ IN UINTN MaximumPacketLength,
+ IN OUT VOID *Data,
+ IN OUT UINTN *DataLength,
+ IN OUT UINT8 *DataToggle,
+ IN UINTN Timeout,
+ IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
+ OUT UINT32 *TransferResult
+ );
+
+/**
+ Submits isochronous transfer to a target USB device.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param DeviceAddress Target device address.
+ @param EndPointAddress End point address with its direction.
+ @param DeviceSpeed Device speed, Low speed device doesn't support this
+ type.
+ @param MaximumPacketLength Maximum packet size that the endpoint is capable of
+ sending or receiving.
+ @param DataBuffersNumber Number of data buffers prepared for the transfer.
+ @param Data Array of pointers to the buffers of data that will
+ be transmitted to USB device or received from USB
+ device.
+ @param DataLength The size, in bytes, of the data buffer.
+ @param Translator Transaction translator to use.
+ @param TransferResult Variable to receive the transfer result.
+
+ @return EFI_UNSUPPORTED Isochronous transfer is unsupported.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcIsochronousTransfer (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT8 DeviceAddress,
+ IN UINT8 EndPointAddress,
+ IN UINT8 DeviceSpeed,
+ IN UINTN MaximumPacketLength,
+ IN UINT8 DataBuffersNumber,
+ IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
+ IN UINTN DataLength,
+ IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
+ OUT UINT32 *TransferResult
+ );
+
+/**
+ Submits Async isochronous transfer to a target USB device.
+
+ @param This This EFI_USB2_HC_PROTOCOL instance.
+ @param DeviceAddress Target device address.
+ @param EndPointAddress End point address with its direction.
+ @param DeviceSpeed Device speed, Low speed device doesn't support this
+ type.
+ @param MaximumPacketLength Maximum packet size that the endpoint is capable of
+ sending or receiving.
+ @param DataBuffersNumber Number of data buffers prepared for the transfer.
+ @param Data Array of pointers to the buffers of data that will
+ be transmitted to USB device or received from USB
+ device.
+ @param DataLength The size, in bytes, of the data buffer.
+ @param Translator Transaction translator to use.
+ @param IsochronousCallBack Function to be called when the transfer complete.
+ @param Context Context passed to the call back function as
+ parameter.
+
+ @return EFI_UNSUPPORTED Isochronous transfer isn't supported.
+
+**/
+EFI_STATUS
+EFIAPI
+XhcAsyncIsochronousTransfer (
+ IN EFI_USB2_HC_PROTOCOL *This,
+ IN UINT8 DeviceAddress,
+ IN UINT8 EndPointAddress,
+ IN UINT8 DeviceSpeed,
+ IN UINTN MaximumPacketLength,
+ IN UINT8 DataBuffersNumber,
+ IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
+ IN UINTN DataLength,
+ IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
+ IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack,
+ IN VOID *Context
+ );
+
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-04 21:18:17 +0000