0xf5089266, 0x1aa0, 0x4953, {0x97, 0xd8, 0x56, 0x2f, 0x8a, 0x73, 0xb5, 0x19 } \\r
}\r
\r
-//\r
-// Forward reference for pure ANSI compatability\r
-//\r
+///\r
+/// Forward reference for pure ANSI compatability\r
+///\r
typedef struct _EFI_USB_HC_PROTOCOL EFI_USB_HC_PROTOCOL;\r
\r
//\r
transfer endpoint is capable of sending or receiving. \r
@param Request A pointer to the USB device request that will be sent to the USB\r
device.\r
- @param TransferDirection Specifies the data direction for the transfer. \r
+ @param TransferDirection Specifies the data direction for the transfer. There are three \r
+ values available, EfiUsbDataIn, EfiUsbDataOut and EfiUsbNoData.\r
@param Data A pointer to the buffer of data that will be transmitted to USB \r
device or received from USB device. \r
@param DataLength On input, indicates the size, in bytes, of the data buffer specified\r
@param This A pointer to the EFI_USB_HC_PROTOCOL instance.\r
@param DeviceAddress Represents the address of the target device on the USB, which is\r
assigned during USB enumeration. \r
- @param EndPointAddress The combination of an endpoint number and an endpoint\r
- direction of the target USB device. \r
+ @param EndPointAddress The combination of an endpoint number and an endpoint \r
+ direction of the target USB device. Each endpoint address \r
+ supports data transfer in one direction except the control \r
+ endpoint (whose default endpoint address is 0). It is the \r
+ caller's responsibility to make sure that the EndPointAddress \r
+ represents a bulk endpoint. \r
@param MaximumPacketLength Indicates the maximum packet size that the default control \r
transfer endpoint is capable of sending or receiving. \r
@param Data A pointer to the buffer of data that will be transmitted to USB \r
@param DeviceAddress Represents the address of the target device on the USB, which is\r
assigned during USB enumeration. \r
@param EndPointAddress The combination of an endpoint number and an endpoint\r
- direction of the target USB device. \r
+ direction of the target USB device. Each endpoint address\r
+ supports data transfer in one direction except the control\r
+ endpoint (whose default endpoint address is zero). It is the\r
+ caller's responsibility to make sure that the\r
+ EndPointAddress represents an interrupt endpoint. \r
@param IsSlowDevice Indicates whether the target device is slow device or full-speed\r
device. \r
@param MaximumPacketLength Indicates the maximum packet size that the default control \r
transfer endpoint is capable of sending or receiving. \r
@param IsNewTransfer If TRUE, an asynchronous interrupt pipe is built between the host \r
- and the target interrupt endpoint. If FALSE, the specified \r
- @param DataToggle A pointer to the data toggle value. \r
+ and the target interrupt endpoint. If FALSE, the specified asynchronous \r
+ interrupt pipe is canceled. If TRUE, and an interrupt transfer exists \r
+ for the target end point, then EFI_INVALID_PARAMETER is returned. \r
+ @param DataToggle A pointer to the data toggle value. On input, it is valid when \r
+ IsNewTransfer is TRUE, and it indicates the initial data toggle \r
+ value the asynchronous interrupt transfer should adopt. On output, \r
+ it is valid when IsNewTransfer is FALSE, and it is updated to indicate \r
+ the data toggle value of the subsequent asynchronous interrupt transfer. \r
@param PollingInterval Indicates the interval, in milliseconds, that the asynchronous\r
- interrupt transfer is polled. asynchronous interrupt pipe is canceled. \r
+ interrupt transfer is polled. \r
@param DataLength Indicates the length of data to be received at the rate specified by\r
PollingInterval from the target asynchronous interrupt \r
- endpoint. \r
- @param CallBackFunction The Callback function. \r
+ endpoint. This parameter is only required when IsNewTransfer is TRUE. \r
+ @param CallBackFunction The Callback function. This function is called at the rate specified by \r
+ PollingInterval. This parameter is only required when IsNewTransfer is TRUE. \r
@param Context The context that is passed to the CallBackFunction.\r
\r
@retval EFI_SUCCESS The asynchronous interrupt transfer request has been successfully\r
@param DeviceAddress Represents the address of the target device on the USB, which is\r
assigned during USB enumeration. \r
@param EndPointAddress The combination of an endpoint number and an endpoint\r
- direction of the target USB device. \r
+ direction of the target USB device. Each endpoint address\r
+ supports data transfer in one direction except the control\r
+ endpoint (whose default endpoint address is zero). It is the\r
+ caller's responsibility to make sure that the\r
+ EndPointAddress represents an interrupt endpoint. \r
@param IsSlowDevice Indicates whether the target device is slow device or full-speed\r
device. \r
@param MaximumPacketLength Indicates the maximum packet size that the default control \r
device or received from USB device. asynchronous interrupt pipe is canceled. \r
@param DataLength On input, the size, in bytes, of the data buffer specified by Data.\r
On output, the number of bytes transferred. \r
- @param DataToggle A pointer to the data toggle value. \r
+ @param DataToggle A pointer to the data toggle value. On input, it indicates the initial \r
+ data toggle value the synchronous interrupt transfer should adopt; \r
+ on output, it is updated to indicate the data toggle value of the \r
+ subsequent synchronous interrupt transfer. \r
@param TimeOut Indicates the maximum time, in milliseconds, which the transfer \r
is allowed to complete. \r
@param TransferResult A pointer to the detailed result information from the synchronous\r
@param DeviceAddress Represents the address of the target device on the USB, which is\r
assigned during USB enumeration. \r
@param EndPointAddress The combination of an endpoint number and an endpoint\r
- direction of the target USB device. \r
+ direction of the target USB device. Each endpoint address\r
+ supports data transfer in one direction except the control\r
+ endpoint (whose default endpoint address is 0). It is the caller's\r
+ responsibility to make sure that the EndPointAddress\r
+ represents an isochronous endpoint. \r
@param MaximumPacketLength Indicates the maximum packet size that the default control \r
transfer endpoint is capable of sending or receiving. \r
@param Data A pointer to the buffer of data that will be transmitted to USB\r
@param DeviceAddress Represents the address of the target device on the USB, which is\r
assigned during USB enumeration. \r
@param EndPointAddress The combination of an endpoint number and an endpoint\r
- direction of the target USB device. \r
+ direction of the target USB device. Each endpoint address\r
+ supports data transfer in one direction except the control\r
+ endpoint (whose default endpoint address is zero). It is the\r
+ caller's responsibility to make sure that the\r
+ EndPointAddress represents an isochronous endpoint. \r
@param MaximumPacketLength Indicates the maximum packet size that the default control \r
- transfer endpoint is capable of sending or receiving. \r
+ transfer endpoint is capable of sending or receiving. For isochronous \r
+ endpoints, this value is used to reserve the bus time in the schedule, \r
+ required for the perframe data payloads. The pipe may, on an ongoing basis,\r
+ actually use less bandwidth than that reserved. \r
@param Data A pointer to the buffer of data that will be transmitted to USB\r
device or received from USB device. asynchronous interrupt pipe is canceled. \r
@param DataLength Specifies the length, in bytes, of the data to be sent to or received\r
from the USB device. \r
- @param IsochronousCallback The Callback function.\r
+ @param IsochronousCallback The Callback function.This function is called if the requested\r
+ isochronous transfer is completed.\r
@param Context Data passed to the IsochronousCallback function. This is\r
an optional parameter and may be NULL.\r
\r
\r
@param This A pointer to the EFI_USB_HC_PROTOCOL instance.\r
@param PortNumber Specifies the root hub port from which the status is to be retrieved.\r
- This value is zero based.\r
+ This value is zero based. For example, if a root hub has two ports,\r
+ then the first port is numbered 0, and the second port is\r
+ numbered 1.\r
@param PortStatus A pointer to the current port status bits and port status change bits. \r
\r
@retval EFI_SUCCESS The status of the USB root hub port specified by PortNumber\r
\r
@param This A pointer to the EFI_USB_HC_PROTOCOL instance.\r
@param PortNumber Specifies the root hub port from which the status is to be retrieved.\r
- This value is zero based.\r
+ This value is zero based. For example, if a root hub has two ports,\r
+ then the first port is numbered 0, and the second port is\r
+ numbered 1.\r
@param PortFeature Indicates the feature selector associated with the feature set\r
request.\r
\r
Clears a feature for the specified root hub port.\r
\r
@param This A pointer to the EFI_USB_HC_PROTOCOL instance.\r
- @param PortNumber Specifies the root hub port from which the status is to be cleared.\r
- This value is zero based.\r
+ @param PortNumber Specifies the root hub port from which the status is to be retrieved.\r
+ This value is zero based. For example, if a root hub has two ports,\r
+ then the first port is numbered 0, and the second port is\r
+ numbered 1.\r
@param PortFeature Indicates the feature selector associated with the feature clear\r
request.\r
\r
);\r
\r
\r
-/** \r
- @par Protocol Description:\r
- The EFI_USB_HC_PROTOCOL provides USB host controller management, basic data transactions\r
- over a USB bus, and USB root hub access. A device driver that wishes to manage a USB bus in a\r
- system retrieves the EFI_USB_HC_PROTOCOL instance that is associated with the USB bus to be\r
- managed. A device handle for a USB host controller will minimally contain an\r
- EFI_DEVICE_PATH_PROTOCOL instance, and an EFI_USB_HC_PROTOCOL instance. \r
- \r
- @param Reset \r
- Software reset of USB. \r
-\r
- @param GetState \r
- Retrieves the current state of the USB host controller. \r
-\r
- @param SetState \r
- Sets the USB host controller to a specific state. \r
-\r
- @param ControlTransfer \r
- Submits a control transfer to a target USB device. \r
-\r
- @param BulkTransfer \r
- Submits a bulk transfer to a bulk endpoint of a USB device. \r
-\r
- @param AsyncInterruptTransfer\r
- Submits an asynchronous interrupt transfer to an interrupt endpoint\r
- of a USB device. \r
-\r
- @param SyncInterruptTransfer\r
- Submits a synchronous interrupt transfer to an interrupt endpoint\r
- of a USB device.\r
-\r
- @param IsochronousTransfer \r
- Submits isochronous transfer to an isochronous endpoint of a USB device.\r
-\r
- @param AsyncIsochronousTransfer\r
- Submits nonblocking USB isochronous transfer.\r
-\r
- @param GetRootHubPortNumber \r
- Retrieves the number of root hub ports that are produced by the\r
- USB host controller. \r
-\r
- @param GetRootHubPortStatus \r
- Retrieves the status of the specified root hub port. \r
-\r
- @param SetRootHubPortFeature\r
- Sets the feature for the specified root hub port.\r
-\r
- @param ClearRootHubPortFeature\r
- Clears the feature for the specified root hub port. \r
-\r
- @param MajorRevision \r
- The major revision number of the USB host controller. The\r
- revision information indicates the release of the Universal Serial\r
- Bus Specification with which the host controller is compliant.\r
-\r
- @param MinorRevision \r
- The minor revision number of the USB host controller. The\r
- revision information indicates the release of the Universal Serial\r
- Bus Specification with which the host controller is compliant.\r
- \r
-**/\r
+///\r
+/// The EFI_USB_HC_PROTOCOL provides USB host controller management, basic data transactions\r
+/// over a USB bus, and USB root hub access. A device driver that wishes to manage a USB bus in a\r
+/// system retrieves the EFI_USB_HC_PROTOCOL instance that is associated with the USB bus to be\r
+/// managed. A device handle for a USB host controller will minimally contain an\r
+/// EFI_DEVICE_PATH_PROTOCOL instance, and an EFI_USB_HC_PROTOCOL instance. \r
+///\r
struct _EFI_USB_HC_PROTOCOL {\r
EFI_USB_HC_PROTOCOL_RESET Reset;\r
EFI_USB_HC_PROTOCOL_GET_STATE GetState;\r
EFI_USB_HC_PROTOCOL_GET_ROOTHUB_PORT_STATUS GetRootHubPortStatus;\r
EFI_USB_HC_PROTOCOL_SET_ROOTHUB_PORT_FEATURE SetRootHubPortFeature;\r
EFI_USB_HC_PROTOCOL_CLEAR_ROOTHUB_PORT_FEATURE ClearRootHubPortFeature;\r
+ ///\r
+ /// The major revision number of the USB host controller. The revision information \r
+ /// indicates the release of the Universal Serial Bus Specification with which the \r
+ /// host controller is compliant.\r
+ /// \r
UINT16 MajorRevision;\r
+ ///\r
+ /// The minor revision number of the USB host controller. The revision information \r
+ /// indicates the release of the Universal Serial Bus Specification with which the \r
+ /// host controller is compliant. \r
+ /// \r
UINT16 MinorRevision;\r
};\r
\r
projects / mirror_edk2.git / blobdiff