mirror of https://github.com/acidanthera/audk.git
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/** @file
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Defination for the USB mass storage Bulk-Only Transport protocol.
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This implementation is based on the "Universal Serial Bus Mass
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Storage Class Bulk-Only Transport" Revision 1.0, September 31, 1999.
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Copyright (c) 2007 - 2008, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _EFI_USBMASS_BOT_H_
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#define _EFI_USBMASS_BOT_H_
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typedef enum {
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//
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// Usb Bulk-Only class specfic request
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//
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USB_BOT_RESET_REQUEST = 0xFF, // Bulk-Only Mass Storage Reset
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USB_BOT_GETLUN_REQUEST = 0xFE, // Get Max Lun
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USB_BOT_CBW_SIGNATURE = 0x43425355, // dCBWSignature, tag the packet as CBW
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USB_BOT_CSW_SIGNATURE = 0x53425355, // dCSWSignature, tag the packet as CSW
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USB_BOT_MAX_LUN = 0x0F, // Lun number is from 0 to 15
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USB_BOT_MAX_CMDLEN = 16, // Maxium number of command from command set
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//
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// Usb BOT command block status values
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//
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USB_BOT_COMMAND_OK = 0x00, // Command passed, good status
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USB_BOT_COMMAND_FAILED = 0x01, // Command failed
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USB_BOT_COMMAND_ERROR = 0x02, // Phase error, need to reset the device
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//
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// Usb Bot retry to get CSW, refers to specification[BOT10-5.3, it says 2 times]
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//
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USB_BOT_RECV_CSW_RETRY = 3,
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//
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// Usb Bot wait device reset complete, set by experience
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//
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USB_BOT_RESET_DEVICE_STALL = 100 * USB_MASS_1_MILLISECOND,
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//
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// Usb Bot transport timeout, set by experience
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//
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USB_BOT_SEND_CBW_TIMEOUT = 3 * USB_MASS_1_SECOND,
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USB_BOT_RECV_CSW_TIMEOUT = 3 * USB_MASS_1_SECOND,
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USB_BOT_RESET_DEVICE_TIMEOUT = 3 * USB_MASS_1_SECOND
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}USB_BOT_SUBCLASS;
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//
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// The CBW (Command Block Wrapper) and CSW (Command Status Wrapper)
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// structures used by the Usb BOT protocol.
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//
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#pragma pack(1)
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typedef struct {
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UINT32 Signature;
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UINT32 Tag;
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UINT32 DataLen; // Length of data between CBW and CSW
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UINT8 Flag; // Bit 7, 0 ~ Data-Out, 1 ~ Data-In
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UINT8 Lun; // Lun number. Bits 0~3 are used
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UINT8 CmdLen; // Length of the command. Bits 0~4 are used
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UINT8 CmdBlock[USB_BOT_MAX_CMDLEN];
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} USB_BOT_CBW;
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typedef struct {
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UINT32 Signature;
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UINT32 Tag;
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UINT32 DataResidue;
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UINT8 CmdStatus;
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} USB_BOT_CSW;
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#pragma pack()
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//
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// Put Interface at the first field is to make it easy to get by Context, which
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// could be BOT/CBI Protocol instance
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//
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typedef struct {
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EFI_USB_INTERFACE_DESCRIPTOR Interface;
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EFI_USB_ENDPOINT_DESCRIPTOR *BulkInEndpoint;
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EFI_USB_ENDPOINT_DESCRIPTOR *BulkOutEndpoint;
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UINT32 CbwTag;
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EFI_USB_IO_PROTOCOL *UsbIo;
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} USB_BOT_PROTOCOL;
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extern USB_MASS_TRANSPORT mUsbBotTransport;
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#endif
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