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Use MaxPacketSize as the initial buffer size to read data.

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If host sends more than 8 bytes of data, BABBLE error would happen if USB3 debug library uses 8 byte of buffer to read data.
We need use MaxPacketSize in USB3 debug descriptor to create buffer and read data into this buffer.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16762 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Elvin Li
2015-02-05 01:15:09 +00:00
committed by li-elvin
parent 4b4a068cd4
commit 5d6507a146
3 changed files with 40 additions and 44 deletions
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25
SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Internal.h
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@@ -1,7 +1,7 @@
/** @file
Debug Port Library implementation based on usb3 debug port.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -30,13 +30,6 @@
#include <Library/TimerLib.h>
#include <Library/DebugCommunicationLib.h>
#include <Library/PciLib.h>
#include <Library/SerialPortLib.h> // Todo: remove in future
//
// Internal serial debug - remove finally
//
#include <Library/SerialPortLib.h>
#include <Library/PrintLib.h>
//
// USB Debug GUID value
@@ -54,7 +47,12 @@
#define USB3DBG_ENABLED 2 // The XHCI debug device is enabled
#define USB3DBG_NOT_ENABLED 4 // The XHCI debug device is not enabled
#define USB3_DEBUG_PORT_MAX_PACKET_SIZE 0x08
#define USB3_DEBUG_PORT_WRITE_MAX_PACKET_SIZE 0x08
//
// MaxPacketSize for DbC Endpoint Descriptor IN and OUT
//
#define XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE 0x400
#define XHCI_DEBUG_DEVICE_VENDOR_ID 0x0525
#define XHCI_DEBUG_DEVICE_PRODUCT_ID 0x127A
@@ -79,11 +77,6 @@
#define XHC_USBSTS_HALT BIT0
//
// Transfer the data of 8 bytes each time
//
#define XHC_DEBUG_PORT_DATA_LENGTH 8
//
// Indicate the timeout when data is transferred in microsecond. 0 means infinite timeout.
//
@@ -528,9 +521,9 @@ typedef struct _USB3_DEBUG_PORT_INSTANCE {
//
UINT8 DataCount;
//
// The data buffer. Maximum length is 8 bytes.
// The data buffer address for data read and poll.
//
UINT8 Data[8];
EFI_PHYSICAL_ADDRESS Data;
//
// Timter settings
//