+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
- *
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-******************************************************************************/
-/*****************************************************************************/
-/**
-*
-* @file xbasic_types.c
-*
-* This file contains basic functions for Xilinx software IP.
-*
-* <pre>
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- ---- -------- -------------------------------------------------------
-* 1.00a rpm 11/07/03 Added XNullHandler function as a stub interrupt handler
-* </pre>
-*
-******************************************************************************/
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-
-/************************** Constant Definitions *****************************/
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Variable Definitions *****************************/
-
-/**
- * This variable allows testing to be done easier with asserts. An assert
- * sets this variable such that a driver can evaluate this variable
- * to determine if an assert occurred.
- */
-unsigned int XAssertStatus;
-
-/**
- * This variable allows the assert functionality to be changed for testing
- * such that it does not wait infinitely. Use the debugger to disable the
- * waiting during testing of asserts.
- */
-u32 XWaitInAssert = TRUE;
-
-/* The callback function to be invoked when an assert is taken */
-static XAssertCallback XAssertCallbackRoutine = (XAssertCallback) NULL;
-
-/************************** Function Prototypes ******************************/
-
-/*****************************************************************************/
-/**
-*
-* Implements assert. Currently, it calls a user-defined callback function
-* if one has been set. Then, it potentially enters an infinite loop depending
-* on the value of the XWaitInAssert variable.
-*
-* @param File is the name of the filename of the source
-* @param Line is the linenumber within File
-*
-* @return
-*
-* None.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-void
-XAssert(char *File, int Line)
-{
- /* if the callback has been set then invoke it */
- if (XAssertCallbackRoutine != NULL) {
- (*XAssertCallbackRoutine) (File, Line);
- }
-
- /* if specified, wait indefinitely such that the assert will show up
- * in testing
- */
- while (XWaitInAssert) {
- }
-}
-
-/*****************************************************************************/
-/**
-*
-* Sets up a callback function to be invoked when an assert occurs. If there
-* was already a callback installed, then it is replaced.
-*
-* @param Routine is the callback to be invoked when an assert is taken
-*
-* @return
-*
-* None.
-*
-* @note
-*
-* This function has no effect if NDEBUG is set
-*
-******************************************************************************/
-void
-XAssertSetCallback(XAssertCallback Routine)
-{
- XAssertCallbackRoutine = Routine;
-}
-
-/*****************************************************************************/
-/**
-*
-* Null handler function. This follows the XInterruptHandler signature for
-* interrupt handlers. It can be used to assign a null handler (a stub) to an
-* interrupt controller vector table.
-*
-* @param NullParameter is an arbitrary void pointer and not used.
-*
-* @return
-*
-* None.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-void
-XNullHandler(void *NullParameter)
-{
-}
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-******************************************************************************/
-/*****************************************************************************/
-/**
-*
-* @file xbasic_types.h
-*
-* This file contains basic types for Xilinx software IP. These types do not
-* follow the standard naming convention with respect to using the component
-* name in front of each name because they are considered to be primitives.
-*
-* @note
-*
-* This file contains items which are architecture dependent.
-*
-* <pre>
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- ---- -------- -------------------------------------------------------
-* 1.00a rmm 12/14/01 First release
-* rmm 05/09/03 Added "xassert always" macros to rid ourselves of diab
-* compiler warnings
-* 1.00a rpm 11/07/03 Added XNullHandler function as a stub interrupt handler
-* </pre>
-*
-******************************************************************************/
-
-#ifndef XBASIC_TYPES_H /* prevent circular inclusions */
-#define XBASIC_TYPES_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-
-/************************** Constant Definitions *****************************/
-
-#ifndef TRUE
-#define TRUE 1
-#endif
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#ifndef NULL
-#define NULL 0
-#endif
-/** Null */
-
-#define XCOMPONENT_IS_READY 0x11111111 /* component has been initialized */
-#define XCOMPONENT_IS_STARTED 0x22222222 /* component has been started */
-
-/* the following constants and declarations are for unit test purposes and are
- * designed to be used in test applications.
- */
-#define XTEST_PASSED 0
-#define XTEST_FAILED 1
-
-#define XASSERT_NONE 0
-#define XASSERT_OCCURRED 1
-
-extern unsigned int XAssertStatus;
-extern void XAssert(char *, int);
-
-/**************************** Type Definitions *******************************/
-
-/** @name Primitive types
- * These primitive types are created for transportability.
- * They are dependent upon the target architecture.
- * @{
- */
-#include <linux/types.h>
-
-typedef struct {
- u32 Upper;
- u32 Lower;
-} Xuint64;
-
-/*@}*/
-
-/**
- * This data type defines an interrupt handler for a device.
- * The argument points to the instance of the component
- */
-typedef void (*XInterruptHandler) (void *InstancePtr);
-
-/**
- * This data type defines a callback to be invoked when an
- * assert occurs. The callback is invoked only when asserts are enabled
- */
-typedef void (*XAssertCallback) (char *FilenamePtr, int LineNumber);
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/*****************************************************************************/
-/**
-* Return the most significant half of the 64 bit data type.
-*
-* @param x is the 64 bit word.
-*
-* @return
-*
-* The upper 32 bits of the 64 bit word.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-#define XUINT64_MSW(x) ((x).Upper)
-
-/*****************************************************************************/
-/**
-* Return the least significant half of the 64 bit data type.
-*
-* @param x is the 64 bit word.
-*
-* @return
-*
-* The lower 32 bits of the 64 bit word.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-#define XUINT64_LSW(x) ((x).Lower)
-
-#ifndef NDEBUG
-
-/*****************************************************************************/
-/**
-* This assert macro is to be used for functions that do not return anything
-* (void). This in conjunction with the XWaitInAssert boolean can be used to
-* accomodate tests so that asserts which fail allow execution to continue.
-*
-* @param expression is the expression to evaluate. If it evaluates to false,
-* the assert occurs.
-*
-* @return
-*
-* Returns void unless the XWaitInAssert variable is true, in which case
-* no return is made and an infinite loop is entered.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-#define XASSERT_VOID(expression) \
-{ \
- if (expression) { \
- XAssertStatus = XASSERT_NONE; \
- } else { \
- XAssert(__FILE__, __LINE__); \
- XAssertStatus = XASSERT_OCCURRED; \
- return; \
- } \
-}
-
-/*****************************************************************************/
-/**
-* This assert macro is to be used for functions that do return a value. This in
-* conjunction with the XWaitInAssert boolean can be used to accomodate tests so
-* that asserts which fail allow execution to continue.
-*
-* @param expression is the expression to evaluate. If it evaluates to false,
-* the assert occurs.
-*
-* @return
-*
-* Returns 0 unless the XWaitInAssert variable is true, in which case
-* no return is made and an infinite loop is entered.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-#define XASSERT_NONVOID(expression) \
-{ \
- if (expression) { \
- XAssertStatus = XASSERT_NONE; \
- } else { \
- XAssert(__FILE__, __LINE__); \
- XAssertStatus = XASSERT_OCCURRED; \
- return 0; \
- } \
-}
-
-/*****************************************************************************/
-/**
-* Always assert. This assert macro is to be used for functions that do not
-* return anything (void). Use for instances where an assert should always
-* occur.
-*
-* @return
-*
-* Returns void unless the XWaitInAssert variable is true, in which case
-* no return is made and an infinite loop is entered.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-#define XASSERT_VOID_ALWAYS() \
-{ \
- XAssert(__FILE__, __LINE__); \
- XAssertStatus = XASSERT_OCCURRED; \
- return; \
-}
-
-/*****************************************************************************/
-/**
-* Always assert. This assert macro is to be used for functions that do return
-* a value. Use for instances where an assert should always occur.
-*
-* @return
-*
-* Returns void unless the XWaitInAssert variable is true, in which case
-* no return is made and an infinite loop is entered.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-#define XASSERT_NONVOID_ALWAYS() \
-{ \
- XAssert(__FILE__, __LINE__); \
- XAssertStatus = XASSERT_OCCURRED; \
- return 0; \
-}
-
-#else
-
-#define XASSERT_VOID(expression)
-#define XASSERT_VOID_ALWAYS()
-#define XASSERT_NONVOID(expression)
-#define XASSERT_NONVOID_ALWAYS()
-#endif
-
-/************************** Function Prototypes ******************************/
-
-void XAssertSetCallback(XAssertCallback Routine);
-void XNullHandler(void *NullParameter);
-
-#endif /* end of protection macro */
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-* FILENAME:
-*
-* xbuf_descriptor.h
-*
-* DESCRIPTION:
-*
-* This file contains the interface for the XBufDescriptor component.
-* The XBufDescriptor component is a passive component that only maps over
-* a buffer descriptor data structure shared by the scatter gather DMA hardware
-* and software. The component's primary purpose is to provide encapsulation of
-* the buffer descriptor processing. See the source file xbuf_descriptor.c for
-* details.
-*
-* NOTES:
-*
-* Most of the functions of this component are implemented as macros in order
-* to optimize the processing. The names are not all uppercase such that they
-* can be switched between macros and functions easily.
-*
-******************************************************************************/
-
-#ifndef XBUF_DESCRIPTOR_H /* prevent circular inclusions */
-#define XBUF_DESCRIPTOR_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-#include "xdma_channel_i.h"
-
-/************************** Constant Definitions *****************************/
-
-/* The following constants allow access to all fields of a buffer descriptor
- * and are necessary at this level of visibility to allow macros to access
- * and modify the fields of a buffer descriptor. It is not expected that the
- * user of a buffer descriptor would need to use these constants.
- */
-
-#define XBD_DEVICE_STATUS_OFFSET 0
-#define XBD_CONTROL_OFFSET 1
-#define XBD_SOURCE_OFFSET 2
-#define XBD_DESTINATION_OFFSET 3
-#define XBD_LENGTH_OFFSET 4
-#define XBD_STATUS_OFFSET 5
-#define XBD_NEXT_PTR_OFFSET 6
-#define XBD_ID_OFFSET 7
-#define XBD_FLAGS_OFFSET 8
-#define XBD_RQSTED_LENGTH_OFFSET 9
-
-#define XBD_SIZE_IN_WORDS 10
-
-/*
- * The following constants define the bits of the flags field of a buffer
- * descriptor
- */
-
-#define XBD_FLAGS_LOCKED_MASK 1UL
-
-/**************************** Type Definitions *******************************/
-
-typedef u32 XBufDescriptor[XBD_SIZE_IN_WORDS];
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/* each of the following macros are named the same as functions rather than all
- * upper case in order to allow either the macros or the functions to be
- * used, see the source file xbuf_descriptor.c for documentation
- */
-
-#define XBufDescriptor_Initialize(InstancePtr) \
-{ \
- (*((u32 *)InstancePtr + XBD_CONTROL_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_SOURCE_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_DESTINATION_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_LENGTH_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_STATUS_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_DEVICE_STATUS_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_NEXT_PTR_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_ID_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_FLAGS_OFFSET) = 0); \
- (*((u32 *)InstancePtr + XBD_RQSTED_LENGTH_OFFSET) = 0); \
-}
-
-#define XBufDescriptor_GetControl(InstancePtr) \
- (u32)(*((u32 *)InstancePtr + XBD_CONTROL_OFFSET))
-
-#define XBufDescriptor_SetControl(InstancePtr, Control) \
- (*((u32 *)InstancePtr + XBD_CONTROL_OFFSET) = (u32)Control)
-
-#define XBufDescriptor_IsLastControl(InstancePtr) \
- (u32)(*((u32 *)InstancePtr + XBD_CONTROL_OFFSET) & \
- XDC_CONTROL_LAST_BD_MASK)
-
-#define XBufDescriptor_SetLast(InstancePtr) \
- (*((u32 *)InstancePtr + XBD_CONTROL_OFFSET) |= XDC_CONTROL_LAST_BD_MASK)
-
-#define XBufDescriptor_GetSrcAddress(InstancePtr) \
- ((u32 *)(*((u32 *)InstancePtr + XBD_SOURCE_OFFSET)))
-
-#define XBufDescriptor_SetSrcAddress(InstancePtr, Source) \
- (*((u32 *)InstancePtr + XBD_SOURCE_OFFSET) = (u32)Source)
-
-#define XBufDescriptor_GetDestAddress(InstancePtr) \
- ((u32 *)(*((u32 *)InstancePtr + XBD_DESTINATION_OFFSET)))
-
-#define XBufDescriptor_SetDestAddress(InstancePtr, Destination) \
- (*((u32 *)InstancePtr + XBD_DESTINATION_OFFSET) = (u32)Destination)
-
-#define XBufDescriptor_GetLength(InstancePtr) \
- (u32)(*((u32 *)InstancePtr + XBD_RQSTED_LENGTH_OFFSET) - \
- *((u32 *)InstancePtr + XBD_LENGTH_OFFSET))
-
-#define XBufDescriptor_SetLength(InstancePtr, Length) \
-{ \
- (*((u32 *)InstancePtr + XBD_LENGTH_OFFSET) = (u32)(Length)); \
- (*((u32 *)InstancePtr + XBD_RQSTED_LENGTH_OFFSET) = (u32)(Length));\
-}
-
-#define XBufDescriptor_GetStatus(InstancePtr) \
- (u32)(*((u32 *)InstancePtr + XBD_STATUS_OFFSET))
-
-#define XBufDescriptor_SetStatus(InstancePtr, Status) \
- (*((u32 *)InstancePtr + XBD_STATUS_OFFSET) = (u32)Status)
-
-#define XBufDescriptor_IsLastStatus(InstancePtr) \
- (u32)(*((u32 *)InstancePtr + XBD_STATUS_OFFSET) & \
- XDC_STATUS_LAST_BD_MASK)
-
-#define XBufDescriptor_GetDeviceStatus(InstancePtr) \
- ((u32)(*((u32 *)InstancePtr + XBD_DEVICE_STATUS_OFFSET)))
-
-#define XBufDescriptor_SetDeviceStatus(InstancePtr, Status) \
- (*((u32 *)InstancePtr + XBD_DEVICE_STATUS_OFFSET) = (u32)Status)
-
-#define XBufDescriptor_GetNextPtr(InstancePtr) \
- (XBufDescriptor *)(*((u32 *)InstancePtr + XBD_NEXT_PTR_OFFSET))
-
-#define XBufDescriptor_SetNextPtr(InstancePtr, NextPtr) \
- (*((u32 *)InstancePtr + XBD_NEXT_PTR_OFFSET) = (u32)NextPtr)
-
-#define XBufDescriptor_GetId(InstancePtr) \
- (u32)(*((u32 *)InstancePtr + XBD_ID_OFFSET))
-
-#define XBufDescriptor_SetId(InstancePtr, Id) \
- (*((u32 *)InstancePtr + XBD_ID_OFFSET) = (u32)Id)
-
-#define XBufDescriptor_GetFlags(InstancePtr) \
- (u32)(*((u32 *)InstancePtr + XBD_FLAGS_OFFSET))
-
-#define XBufDescriptor_SetFlags(InstancePtr, Flags) \
- (*((u32 *)InstancePtr + XBD_FLAGS_OFFSET) = (u32)Flags)
-
-#define XBufDescriptor_Lock(InstancePtr) \
- (*((u32 *)InstancePtr + XBD_FLAGS_OFFSET) |= XBD_FLAGS_LOCKED_MASK)
-
-#define XBufDescriptor_Unlock(InstancePtr) \
- (*((u32 *)InstancePtr + XBD_FLAGS_OFFSET) &= ~XBD_FLAGS_LOCKED_MASK)
-
-#define XBufDescriptor_IsLocked(InstancePtr) \
- (*((u32 *)InstancePtr + XBD_FLAGS_OFFSET) & XBD_FLAGS_LOCKED_MASK)
-
-/************************** Function Prototypes ******************************/
-
-/* The following prototypes are provided to allow each of the functions to
- * be implemented as a function rather than a macro, and to provide the
- * syntax to allow users to understand how to call the macros, they are
- * commented out to prevent linker errors
- *
-
-u32 XBufDescriptor_Initialize(XBufDescriptor* InstancePtr);
-
-u32 XBufDescriptor_GetControl(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetControl(XBufDescriptor* InstancePtr, u32 Control);
-
-u32 XBufDescriptor_IsLastControl(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetLast(XBufDescriptor* InstancePtr);
-
-u32 XBufDescriptor_GetLength(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetLength(XBufDescriptor* InstancePtr, u32 Length);
-
-u32 XBufDescriptor_GetStatus(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetStatus(XBufDescriptor* InstancePtr, u32 Status);
-u32 XBufDescriptor_IsLastStatus(XBufDescriptor* InstancePtr);
-
-u32 XBufDescriptor_GetDeviceStatus(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetDeviceStatus(XBufDescriptor* InstancePtr,
- u32 Status);
-
-u32 XBufDescriptor_GetSrcAddress(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetSrcAddress(XBufDescriptor* InstancePtr,
- u32 SourceAddress);
-
-u32 XBufDescriptor_GetDestAddress(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetDestAddress(XBufDescriptor* InstancePtr,
- u32 DestinationAddress);
-
-XBufDescriptor* XBufDescriptor_GetNextPtr(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetNextPtr(XBufDescriptor* InstancePtr,
- XBufDescriptor* NextPtr);
-
-u32 XBufDescriptor_GetId(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetId(XBufDescriptor* InstancePtr, u32 Id);
-
-u32 XBufDescriptor_GetFlags(XBufDescriptor* InstancePtr);
-void XBufDescriptor_SetFlags(XBufDescriptor* InstancePtr, u32 Flags);
-
-void XBufDescriptor_Lock(XBufDescriptor* InstancePtr);
-void XBufDescriptor_Unlock(XBufDescriptor* InstancePtr);
-u32 XBufDescriptor_IsLocked(XBufDescriptor* InstancePtr);
-
-void XBufDescriptor_Copy(XBufDescriptor* InstancePtr,
- XBufDescriptor* DestinationPtr);
-
-*/
-
-#endif /* end of protection macro */
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-* FILENAME:
-*
-* xdma_channel.c
-*
-* DESCRIPTION:
-*
-* This file contains the DMA channel component. This component supports
-* a distributed DMA design in which each device can have it's own dedicated
-* DMA channel, as opposed to a centralized DMA design. This component
-* performs processing for DMA on all devices.
-*
-* See xdma_channel.h for more information about this component.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-
-/***************************** Include Files *********************************/
-
-#include "xdma_channel.h"
-#include "xbasic_types.h"
-#include "xio.h"
-
-/************************** Constant Definitions *****************************/
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_Initialize
-*
-* DESCRIPTION:
-*
-* This function initializes a DMA channel. This function must be called
-* prior to using a DMA channel. Initialization of a channel includes setting
-* up the registers base address, and resetting the channel such that it's in a
-* known state. Interrupts for the channel are disabled when the channel is
-* reset.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* BaseAddress contains the base address of the registers for the DMA channel.
-*
-* RETURN VALUE:
-*
-* XST_SUCCESS indicating initialization was successful.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_Initialize(XDmaChannel * InstancePtr, u32 BaseAddress)
-{
- /* assert to verify input arguments, don't assert base address */
-
- XASSERT_NONVOID(InstancePtr != NULL);
-
- /* setup the base address of the registers for the DMA channel such
- * that register accesses can be done
- */
- InstancePtr->RegBaseAddress = BaseAddress;
-
- /* initialize the scatter gather list such that it indicates it has not
- * been created yet and the DMA channel is ready to use (initialized)
- */
- InstancePtr->GetPtr = NULL;
- InstancePtr->PutPtr = NULL;
- InstancePtr->CommitPtr = NULL;
- InstancePtr->LastPtr = NULL;
-
- InstancePtr->TotalDescriptorCount = 0;
- InstancePtr->ActiveDescriptorCount = 0;
- InstancePtr->IsReady = XCOMPONENT_IS_READY;
-
- /* initialize the version of the component
- */
- XVersion_FromString(&InstancePtr->Version, (s8 *)"1.00a");
-
- /* reset the DMA channel such that it's in a known state and ready
- * and indicate the initialization occured with no errors, note that
- * the is ready variable must be set before this call or reset will assert
- */
- XDmaChannel_Reset(InstancePtr);
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_IsReady
-*
-* DESCRIPTION:
-*
-* This function determines if a DMA channel component has been successfully
-* initialized such that it's ready to use.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* RETURN VALUE:
-*
-* TRUE if the DMA channel component is ready, FALSE otherwise.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_IsReady(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments used by the base component */
-
- XASSERT_NONVOID(InstancePtr != NULL);
-
- return InstancePtr->IsReady == XCOMPONENT_IS_READY;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetVersion
-*
-* DESCRIPTION:
-*
-* This function gets the software version for the specified DMA channel
-* component.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* RETURN VALUE:
-*
-* A pointer to the software version of the specified DMA channel.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-XVersion *
-XDmaChannel_GetVersion(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* return a pointer to the version of the DMA channel */
-
- return &InstancePtr->Version;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SelfTest
-*
-* DESCRIPTION:
-*
-* This function performs a self test on the specified DMA channel. This self
-* test is destructive as the DMA channel is reset and a register default is
-* verified.
-*
-* ARGUMENTS:
-*
-* InstancePtr is a pointer to the DMA channel to be operated on.
-*
-* RETURN VALUE:
-*
-* XST_SUCCESS is returned if the self test is successful, or one of the
-* following errors.
-*
-* XST_DMA_RESET_REGISTER_ERROR Indicates the control register value
-* after a reset was not correct
-*
-* NOTES:
-*
-* This test does not performs a DMA transfer to test the channel because the
-* DMA hardware will not currently allow a non-local memory transfer to non-local
-* memory (memory copy), but only allows a non-local memory to or from the device
-* memory (typically a FIFO).
-*
-******************************************************************************/
-
-#define XDC_CONTROL_REG_RESET_MASK 0x98000000UL /* control reg reset value */
-
-XStatus
-XDmaChannel_SelfTest(XDmaChannel * InstancePtr)
-{
- u32 ControlReg;
-
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* reset the DMA channel such that it's in a known state before the test
- * it resets to no interrupts enabled, the desired state for the test
- */
- XDmaChannel_Reset(InstancePtr);
-
- /* this should be the first test to help prevent a lock up with the polling
- * loop that occurs later in the test, check the reset value of the DMA
- * control register to make sure it's correct, return with an error if not
- */
- ControlReg = XDmaChannel_GetControl(InstancePtr);
- if (ControlReg != XDC_CONTROL_REG_RESET_MASK) {
- return XST_DMA_RESET_REGISTER_ERROR;
- }
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_Reset
-*
-* DESCRIPTION:
-*
-* This function resets the DMA channel. This is a destructive operation such
-* that it should not be done while a channel is being used. If the DMA channel
-* is transferring data into other blocks, such as a FIFO, it may be necessary
-* to reset other blocks. This function does not modify the contents of a
-* scatter gather list for a DMA channel such that the user is responsible for
-* getting buffer descriptors from the list if necessary.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-void
-XDmaChannel_Reset(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* reset the DMA channel such that it's in a known state, the reset
- * register is self clearing such that it only has to be set
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_RST_REG_OFFSET,
- XDC_RESET_MASK);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetControl
-*
-* DESCRIPTION:
-*
-* This function gets the control register contents of the DMA channel.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* RETURN VALUE:
-*
-* The control register contents of the DMA channel. One or more of the
-* following values may be contained the register. Each of the values are
-* unique bit masks.
-*
-* XDC_DMACR_SOURCE_INCR_MASK Increment the source address
-* XDC_DMACR_DEST_INCR_MASK Increment the destination address
-* XDC_DMACR_SOURCE_LOCAL_MASK Local source address
-* XDC_DMACR_DEST_LOCAL_MASK Local destination address
-* XDC_DMACR_SG_ENABLE_MASK Scatter gather enable
-* XDC_DMACR_GEN_BD_INTR_MASK Individual buffer descriptor interrupt
-* XDC_DMACR_LAST_BD_MASK Last buffer descriptor in a packet
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_GetControl(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* return the contents of the DMA control register */
-
- return XIo_In32(InstancePtr->RegBaseAddress + XDC_DMAC_REG_OFFSET);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SetControl
-*
-* DESCRIPTION:
-*
-* This function sets the control register of the specified DMA channel.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* Control contains the value to be written to the control register of the DMA
-* channel. One or more of the following values may be contained the register.
-* Each of the values are unique bit masks such that they may be ORed together
-* to enable multiple bits or inverted and ANDed to disable multiple bits.
-*
-* XDC_DMACR_SOURCE_INCR_MASK Increment the source address
-* XDC_DMACR_DEST_INCR_MASK Increment the destination address
-* XDC_DMACR_SOURCE_LOCAL_MASK Local source address
-* XDC_DMACR_DEST_LOCAL_MASK Local destination address
-* XDC_DMACR_SG_ENABLE_MASK Scatter gather enable
-* XDC_DMACR_GEN_BD_INTR_MASK Individual buffer descriptor interrupt
-* XDC_DMACR_LAST_BD_MASK Last buffer descriptor in a packet
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-void
-XDmaChannel_SetControl(XDmaChannel * InstancePtr, u32 Control)
-{
- /* assert to verify input arguments except the control which can't be
- * asserted since all values are valid
- */
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* set the DMA control register to the specified value */
-
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_DMAC_REG_OFFSET, Control);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetStatus
-*
-* DESCRIPTION:
-*
-* This function gets the status register contents of the DMA channel.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* RETURN VALUE:
-*
-* The status register contents of the DMA channel. One or more of the
-* following values may be contained the register. Each of the values are
-* unique bit masks.
-*
-* XDC_DMASR_BUSY_MASK The DMA channel is busy
-* XDC_DMASR_BUS_ERROR_MASK A bus error occurred
-* XDC_DMASR_BUS_TIMEOUT_MASK A bus timeout occurred
-* XDC_DMASR_LAST_BD_MASK The last buffer descriptor of a packet
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_GetStatus(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* return the contents of the DMA status register */
-
- return XIo_In32(InstancePtr->RegBaseAddress + XDC_DMAS_REG_OFFSET);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SetIntrStatus
-*
-* DESCRIPTION:
-*
-* This function sets the interrupt status register of the specified DMA channel.
-* Setting any bit of the interrupt status register will clear the bit to
-* indicate the interrupt processing has been completed. The definitions of each
-* bit in the register match the definition of the bits in the interrupt enable
-* register.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* Status contains the value to be written to the status register of the DMA
-* channel. One or more of the following values may be contained the register.
-* Each of the values are unique bit masks such that they may be ORed together
-* to enable multiple bits or inverted and ANDed to disable multiple bits.
-*
-* XDC_IXR_DMA_DONE_MASK The dma operation is done
-* XDC_IXR_DMA_ERROR_MASK The dma operation had an error
-* XDC_IXR_PKT_DONE_MASK A packet is complete
-* XDC_IXR_PKT_THRESHOLD_MASK The packet count threshold reached
-* XDC_IXR_PKT_WAIT_BOUND_MASK The packet wait bound reached
-* XDC_IXR_SG_DISABLE_ACK_MASK The scatter gather disable completed
-* XDC_IXR_BD_MASK A buffer descriptor is done
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-void
-XDmaChannel_SetIntrStatus(XDmaChannel * InstancePtr, u32 Status)
-{
- /* assert to verify input arguments except the status which can't be
- * asserted since all values are valid
- */
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* set the interrupt status register with the specified value such that
- * all bits which are set in the register are cleared effectively clearing
- * any active interrupts
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_IS_REG_OFFSET, Status);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetIntrStatus
-*
-* DESCRIPTION:
-*
-* This function gets the interrupt status register of the specified DMA channel.
-* The interrupt status register indicates which interrupts are active
-* for the DMA channel. If an interrupt is active, the status register must be
-* set (written) with the bit set for each interrupt which has been processed
-* in order to clear the interrupts. The definitions of each bit in the register
-* match the definition of the bits in the interrupt enable register.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* RETURN VALUE:
-*
-* The interrupt status register contents of the specified DMA channel.
-* One or more of the following values may be contained the register.
-* Each of the values are unique bit masks.
-*
-* XDC_IXR_DMA_DONE_MASK The dma operation is done
-* XDC_IXR_DMA_ERROR_MASK The dma operation had an error
-* XDC_IXR_PKT_DONE_MASK A packet is complete
-* XDC_IXR_PKT_THRESHOLD_MASK The packet count threshold reached
-* XDC_IXR_PKT_WAIT_BOUND_MASK The packet wait bound reached
-* XDC_IXR_SG_DISABLE_ACK_MASK The scatter gather disable completed
-* XDC_IXR_SG_END_MASK Current descriptor was the end of the list
-* XDC_IXR_BD_MASK A buffer descriptor is done
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_GetIntrStatus(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* return the contents of the interrupt status register */
-
- return XIo_In32(InstancePtr->RegBaseAddress + XDC_IS_REG_OFFSET);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SetIntrEnable
-*
-* DESCRIPTION:
-*
-* This function sets the interrupt enable register of the specified DMA
-* channel. The interrupt enable register contains bits which enable
-* individual interrupts for the DMA channel. The definitions of each bit
-* in the register match the definition of the bits in the interrupt status
-* register.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* Enable contains the interrupt enable register contents to be written
-* in the DMA channel. One or more of the following values may be contained
-* the register. Each of the values are unique bit masks such that they may be
-* ORed together to enable multiple bits or inverted and ANDed to disable
-* multiple bits.
-*
-* XDC_IXR_DMA_DONE_MASK The dma operation is done
-* XDC_IXR_DMA_ERROR_MASK The dma operation had an error
-* XDC_IXR_PKT_DONE_MASK A packet is complete
-* XDC_IXR_PKT_THRESHOLD_MASK The packet count threshold reached
-* XDC_IXR_PKT_WAIT_BOUND_MASK The packet wait bound reached
-* XDC_IXR_SG_DISABLE_ACK_MASK The scatter gather disable completed
-* XDC_IXR_SG_END_MASK Current descriptor was the end of the list
-* XDC_IXR_BD_MASK A buffer descriptor is done
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-void
-XDmaChannel_SetIntrEnable(XDmaChannel * InstancePtr, u32 Enable)
-{
- /* assert to verify input arguments except the enable which can't be
- * asserted since all values are valid
- */
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* set the interrupt enable register to the specified value */
-
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_IE_REG_OFFSET, Enable);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetIntrEnable
-*
-* DESCRIPTION:
-*
-* This function gets the interrupt enable of the DMA channel. The
-* interrupt enable contains flags which enable individual interrupts for the
-* DMA channel. The definitions of each bit in the register match the definition
-* of the bits in the interrupt status register.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* RETURN VALUE:
-*
-* The interrupt enable of the DMA channel. One or more of the following values
-* may be contained the register. Each of the values are unique bit masks.
-*
-* XDC_IXR_DMA_DONE_MASK The dma operation is done
-* XDC_IXR_DMA_ERROR_MASK The dma operation had an error
-* XDC_IXR_PKT_DONE_MASK A packet is complete
-* XDC_IXR_PKT_THRESHOLD_MASK The packet count threshold reached
-* XDC_IXR_PKT_WAIT_BOUND_MASK The packet wait bound reached
-* XDC_IXR_SG_DISABLE_ACK_MASK The scatter gather disable completed
-* XDC_IXR_BD_MASK A buffer descriptor is done
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_GetIntrEnable(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* return the contents of the interrupt enable register */
-
- return XIo_In32(InstancePtr->RegBaseAddress + XDC_IE_REG_OFFSET);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_Transfer
-*
-* DESCRIPTION:
-*
-* This function starts the DMA channel transferring data from a memory source
-* to a memory destination. This function only starts the operation and returns
-* before the operation may be complete. If the interrupt is enabled, an
-* interrupt will be generated when the operation is complete, otherwise it is
-* necessary to poll the channel status to determine when it's complete. It is
-* the responsibility of the caller to determine when the operation is complete
-* by handling the generated interrupt or polling the status. It is also the
-* responsibility of the caller to ensure that the DMA channel is not busy with
-* another transfer before calling this function.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on.
-*
-* SourcePtr contains a pointer to the source memory where the data is to
-* be tranferred from and must be 32 bit aligned.
-*
-* DestinationPtr contains a pointer to the destination memory where the data
-* is to be transferred and must be 32 bit aligned.
-*
-* ByteCount contains the number of bytes to transfer during the DMA operation.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* The DMA h/w will not currently allow a non-local memory transfer to non-local
-* memory (memory copy), but only allows a non-local memory to or from the device
-* memory (typically a FIFO).
-*
-* It is the responsibility of the caller to ensure that the cache is
-* flushed and invalidated both before and after the DMA operation completes
-* if the memory pointed to is cached. The caller must also ensure that the
-* pointers contain a physical address rather than a virtual address
-* if address translation is being used.
-*
-******************************************************************************/
-void
-XDmaChannel_Transfer(XDmaChannel * InstancePtr,
- u32 * SourcePtr, u32 * DestinationPtr, u32 ByteCount)
-{
- /* assert to verify input arguments and the alignment of any arguments
- * which have expected alignments
- */
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(SourcePtr != NULL);
- XASSERT_VOID(((u32) SourcePtr & 3) == 0);
- XASSERT_VOID(DestinationPtr != NULL);
- XASSERT_VOID(((u32) DestinationPtr & 3) == 0);
- XASSERT_VOID(ByteCount != 0);
- XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* setup the source and destination address registers for the transfer */
-
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_SA_REG_OFFSET,
- (u32) SourcePtr);
-
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_DA_REG_OFFSET,
- (u32) DestinationPtr);
-
- /* start the DMA transfer to copy from the source buffer to the
- * destination buffer by writing the length to the length register
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_LEN_REG_OFFSET, ByteCount);
-}
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-* FILENAME:
-*
-* xdma_channel.h
-*
-* DESCRIPTION:
-*
-* This file contains the DMA channel component implementation. This component
-* supports a distributed DMA design in which each device can have it's own
-* dedicated DMA channel, as opposed to a centralized DMA design.
-* A device which uses DMA typically contains two DMA channels, one for
-* sending data and the other for receiving data.
-*
-* This component is designed to be used as a basic building block for
-* designing a device driver. It provides registers accesses such that all
-* DMA processing can be maintained easier, but the device driver designer
-* must still understand all the details of the DMA channel.
-*
-* The DMA channel allows a CPU to minimize the CPU interaction required to move
-* data between a memory and a device. The CPU requests the DMA channel to
-* perform a DMA operation and typically continues performing other processing
-* until the DMA operation completes. DMA could be considered a primitive form
-* of multiprocessing such that caching and address translation can be an issue.
-*
-* Scatter Gather Operations
-*
-* The DMA channel may support scatter gather operations. A scatter gather
-* operation automates the DMA channel such that multiple buffers can be
-* sent or received with minimal software interaction with the hardware. Buffer
-* descriptors, contained in the XBufDescriptor component, are used by the
-* scatter gather operations of the DMA channel to describe the buffers to be
-* processed.
-*
-* Scatter Gather List Operations
-*
-* A scatter gather list may be supported by each DMA channel. The scatter
-* gather list allows buffer descriptors to be put into the list by a device
-* driver which requires scatter gather. The hardware processes the buffer
-* descriptors which are contained in the list and modifies the buffer
-* descriptors to reflect the status of the DMA operations. The device driver
-* is notified by interrupt that specific DMA events occur including scatter
-* gather events. The device driver removes the completed buffer descriptors
-* from the scatter gather list to evaluate the status of each DMA operation.
-*
-* The scatter gather list is created and buffer descriptors are inserted into
-* the list. Buffer descriptors are never removed from the list after it's
-* creation such that a put operation copies from a temporary buffer descriptor
-* to a buffer descriptor in the list. Get operations don't copy from the list
-* to a temporary, but return a pointer to the buffer descriptor in the list.
-* A buffer descriptor in the list may be locked to prevent it from being
-* overwritten by a put operation. This allows the device driver to get a
-* descriptor from a scatter gather list and prevent it from being overwritten
-* until the buffer associated with the buffer descriptor has been processed.
-*
-* Typical Scatter Gather Processing
-*
-* The following steps illustrate the typical processing to use the
-* scatter gather features of a DMA channel.
-*
-* 1. Create a scatter gather list for the DMA channel which puts empty buffer
-* descriptors into the list.
-* 2. Create buffer descriptors which describe the buffers to be filled with
-* receive data or the buffers which contain data to be sent.
-* 3. Put buffer descriptors into the DMA channel scatter list such that scatter
-* gather operations are requested.
-* 4. Commit the buffer descriptors in the list such that they are ready to be
-* used by the DMA channel hardware.
-* 5. Start the scatter gather operations of the DMA channel.
-* 6. Process any interrupts which occur as a result of the scatter gather
-* operations or poll the DMA channel to determine the status.
-*
-* Interrupts
-*
-* Each DMA channel has the ability to generate an interrupt. This component
-* does not perform processing for the interrupt as this processing is typically
-* tightly coupled with the device which is using the DMA channel. It is the
-* responsibility of the caller of DMA functions to manage the interrupt
-* including connecting to the interrupt and enabling/disabling the interrupt.
-*
-* Critical Sections
-*
-* It is the responsibility of the device driver designer to use critical
-* sections as necessary when calling functions of the DMA channel. This
-* component does not use critical sections and it does access registers using
-* read-modify-write operations. Calls to DMA functions from a main thread
-* and from an interrupt context could produce unpredictable behavior such that
-* the caller must provide the appropriate critical sections.
-*
-* Address Translation
-*
-* All addresses of data structures which are passed to DMA functions must
-* be physical (real) addresses as opposed to logical (virtual) addresses.
-*
-* Caching
-*
-* The memory which is passed to the function which creates the scatter gather
-* list must not be cached such that buffer descriptors are non-cached. This
-* is necessary because the buffer descriptors are kept in a ring buffer and
-* not directly accessible to the caller of DMA functions.
-*
-* The caller of DMA functions is responsible for ensuring that any data
-* buffers which are passed to the DMA channel are cache-line aligned if
-* necessary.
-*
-* The caller of DMA functions is responsible for ensuring that any data
-* buffers which are passed to the DMA channel have been flushed from the cache.
-*
-* The caller of DMA functions is responsible for ensuring that the cache is
-* invalidated prior to using any data buffers which are the result of a DMA
-* operation.
-*
-* Memory Alignment
-*
-* The addresses of data buffers which are passed to DMA functions must be
-* 32 bit word aligned since the DMA hardware performs 32 bit word transfers.
-*
-* Mutual Exclusion
-*
-* The functions of the DMA channel are not thread safe such that the caller
-* of all DMA functions is responsible for ensuring mutual exclusion for a
-* DMA channel. Mutual exclusion across multiple DMA channels is not
-* necessary.
-*
-* NOTES:
-*
-* Many of the provided functions which are register accessors don't provide
-* a lot of error detection. The caller is expected to understand the impact
-* of a function call based upon the current state of the DMA channel. This
-* is done to minimize the overhead in this component.
-*
-******************************************************************************/
-
-#ifndef XDMA_CHANNEL_H /* prevent circular inclusions */
-#define XDMA_CHANNEL_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-
-#include "xdma_channel_i.h" /* constants shared with buffer descriptor */
-#include "xbasic_types.h"
-#include "xstatus.h"
-#include "xversion.h"
-#include "xbuf_descriptor.h"
-
-/************************** Constant Definitions *****************************/
-
-/* the following constants provide access to the bit fields of the DMA control
- * register (DMACR)
- */
-#define XDC_DMACR_SOURCE_INCR_MASK 0x80000000UL /* increment source address */
-#define XDC_DMACR_DEST_INCR_MASK 0x40000000UL /* increment dest address */
-#define XDC_DMACR_SOURCE_LOCAL_MASK 0x20000000UL /* local source address */
-#define XDC_DMACR_DEST_LOCAL_MASK 0x10000000UL /* local dest address */
-#define XDC_DMACR_SG_DISABLE_MASK 0x08000000UL /* scatter gather disable */
-#define XDC_DMACR_GEN_BD_INTR_MASK 0x04000000UL /* descriptor interrupt */
-#define XDC_DMACR_LAST_BD_MASK XDC_CONTROL_LAST_BD_MASK /* last buffer */
- /* descriptor */
-
-/* the following constants provide access to the bit fields of the DMA status
- * register (DMASR)
- */
-#define XDC_DMASR_BUSY_MASK 0x80000000UL /* channel is busy */
-#define XDC_DMASR_BUS_ERROR_MASK 0x40000000UL /* bus error occurred */
-#define XDC_DMASR_BUS_TIMEOUT_MASK 0x20000000UL /* bus timeout occurred */
-#define XDC_DMASR_LAST_BD_MASK XDC_STATUS_LAST_BD_MASK /* last buffer */
- /* descriptor */
-#define XDC_DMASR_SG_BUSY_MASK 0x08000000UL /* scatter gather is busy */
-
-/* the following constants provide access to the bit fields of the interrupt
- * status register (ISR) and the interrupt enable register (IER), bit masks
- * match for both registers such that they are named IXR
- */
-#define XDC_IXR_DMA_DONE_MASK 0x1UL /* dma operation done */
-#define XDC_IXR_DMA_ERROR_MASK 0x2UL /* dma operation error */
-#define XDC_IXR_PKT_DONE_MASK 0x4UL /* packet done */
-#define XDC_IXR_PKT_THRESHOLD_MASK 0x8UL /* packet count threshold */
-#define XDC_IXR_PKT_WAIT_BOUND_MASK 0x10UL /* packet wait bound reached */
-#define XDC_IXR_SG_DISABLE_ACK_MASK 0x20UL /* scatter gather disable
- acknowledge occurred */
-#define XDC_IXR_SG_END_MASK 0x40UL /* last buffer descriptor
- disabled scatter gather */
-#define XDC_IXR_BD_MASK 0x80UL /* buffer descriptor done */
-
-/**************************** Type Definitions *******************************/
-
-/*
- * the following structure contains data which is on a per instance basis
- * for the XDmaChannel component
- */
-typedef struct XDmaChannelTag {
- XVersion Version; /* version of the driver */
- u32 RegBaseAddress; /* base address of registers */
- u32 IsReady; /* device is initialized and ready */
-
- XBufDescriptor *PutPtr; /* keep track of where to put into list */
- XBufDescriptor *GetPtr; /* keep track of where to get from list */
- XBufDescriptor *CommitPtr; /* keep track of where to commit in list */
- XBufDescriptor *LastPtr; /* keep track of the last put in the list */
- u32 TotalDescriptorCount; /* total # of descriptors in the list */
- u32 ActiveDescriptorCount; /* # of descriptors pointing to buffers
- * in the buffer descriptor list */
-} XDmaChannel;
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-
-XStatus XDmaChannel_Initialize(XDmaChannel * InstancePtr, u32 BaseAddress);
-u32 XDmaChannel_IsReady(XDmaChannel * InstancePtr);
-XVersion *XDmaChannel_GetVersion(XDmaChannel * InstancePtr);
-XStatus XDmaChannel_SelfTest(XDmaChannel * InstancePtr);
-void XDmaChannel_Reset(XDmaChannel * InstancePtr);
-
-/* Control functions */
-
-u32 XDmaChannel_GetControl(XDmaChannel * InstancePtr);
-void XDmaChannel_SetControl(XDmaChannel * InstancePtr, u32 Control);
-
-/* Status functions */
-
-u32 XDmaChannel_GetStatus(XDmaChannel * InstancePtr);
-void XDmaChannel_SetIntrStatus(XDmaChannel * InstancePtr, u32 Status);
-u32 XDmaChannel_GetIntrStatus(XDmaChannel * InstancePtr);
-void XDmaChannel_SetIntrEnable(XDmaChannel * InstancePtr, u32 Enable);
-u32 XDmaChannel_GetIntrEnable(XDmaChannel * InstancePtr);
-
-/* DMA without scatter gather functions */
-
-void XDmaChannel_Transfer(XDmaChannel * InstancePtr,
- u32 * SourcePtr, u32 * DestinationPtr, u32 ByteCount);
-
-/* Scatter gather functions */
-
-XStatus XDmaChannel_SgStart(XDmaChannel * InstancePtr);
-XStatus XDmaChannel_SgStop(XDmaChannel * InstancePtr,
- XBufDescriptor ** BufDescriptorPtr);
-XStatus XDmaChannel_CreateSgList(XDmaChannel * InstancePtr,
- u32 * MemoryPtr, u32 ByteCount);
-u32 XDmaChannel_IsSgListEmpty(XDmaChannel * InstancePtr);
-
-XStatus XDmaChannel_PutDescriptor(XDmaChannel * InstancePtr,
- XBufDescriptor * BufDescriptorPtr);
-XStatus XDmaChannel_CommitPuts(XDmaChannel * InstancePtr);
-XStatus XDmaChannel_GetDescriptor(XDmaChannel * InstancePtr,
- XBufDescriptor ** BufDescriptorPtr);
-
-/* Packet functions for interrupt collescing */
-
-u32 XDmaChannel_GetPktCount(XDmaChannel * InstancePtr);
-void XDmaChannel_DecrementPktCount(XDmaChannel * InstancePtr);
-XStatus XDmaChannel_SetPktThreshold(XDmaChannel * InstancePtr, u8 Threshold);
-u8 XDmaChannel_GetPktThreshold(XDmaChannel * InstancePtr);
-void XDmaChannel_SetPktWaitBound(XDmaChannel * InstancePtr, u32 WaitBound);
-u32 XDmaChannel_GetPktWaitBound(XDmaChannel * InstancePtr);
-
-#endif /* end of protection macro */
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-* FILENAME:
-*
-* xdma_channel_i.h
-*
-* DESCRIPTION:
-*
-* This file contains data which is shared internal data for the DMA channel
-* component. It is also shared with the buffer descriptor component which is
-* very tightly coupled with the DMA channel component.
-*
-* NOTES:
-*
-* The last buffer descriptor constants must be located here to prevent a
-* circular dependency between the DMA channel component and the buffer
-* descriptor component.
-*
-******************************************************************************/
-
-#ifndef XDMA_CHANNEL_I_H /* prevent circular inclusions */
-#define XDMA_CHANNEL_I_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-#include "xstatus.h"
-#include "xversion.h"
-
-/************************** Constant Definitions *****************************/
-
-#define XDC_DMA_CHANNEL_V1_00_A "1.00a"
-
-/* the following constant provides access to the bit fields of the DMA control
- * register (DMACR) which must be shared between the DMA channel component
- * and the buffer descriptor component
- */
-#define XDC_CONTROL_LAST_BD_MASK 0x02000000UL /* last buffer descriptor */
-
-/* the following constant provides access to the bit fields of the DMA status
- * register (DMASR) which must be shared between the DMA channel component
- * and the buffer descriptor component
- */
-#define XDC_STATUS_LAST_BD_MASK 0x10000000UL /* last buffer descriptor */
-
-/* the following constants provide access to each of the registers of a DMA
- * channel
- */
-#define XDC_RST_REG_OFFSET 0 /* reset register */
-#define XDC_MI_REG_OFFSET 0 /* module information register */
-#define XDC_DMAC_REG_OFFSET 4 /* DMA control register */
-#define XDC_SA_REG_OFFSET 8 /* source address register */
-#define XDC_DA_REG_OFFSET 12 /* destination address register */
-#define XDC_LEN_REG_OFFSET 16 /* length register */
-#define XDC_DMAS_REG_OFFSET 20 /* DMA status register */
-#define XDC_BDA_REG_OFFSET 24 /* buffer descriptor address register */
-#define XDC_SWCR_REG_OFFSET 28 /* software control register */
-#define XDC_UPC_REG_OFFSET 32 /* unserviced packet count register */
-#define XDC_PCT_REG_OFFSET 36 /* packet count threshold register */
-#define XDC_PWB_REG_OFFSET 40 /* packet wait bound register */
-#define XDC_IS_REG_OFFSET 44 /* interrupt status register */
-#define XDC_IE_REG_OFFSET 48 /* interrupt enable register */
-
-/* the following constant is written to the reset register to reset the
- * DMA channel
- */
-#define XDC_RESET_MASK 0x0000000AUL
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-
-#endif /* end of protection macro */
+++ /dev/null
-/* $Id: xdma_channel_sg.c,v 1.6 2003/02/03 19:50:33 moleres Exp $ */
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-* FILENAME:
-*
-* xdma_channel_sg.c
-*
-* DESCRIPTION:
-*
-* This file contains the implementation of the XDmaChannel component which is
-* related to scatter gather operations.
-*
-* Scatter Gather Operations
-*
-* The DMA channel may support scatter gather operations. A scatter gather
-* operation automates the DMA channel such that multiple buffers can be
-* sent or received with minimal software interaction with the hardware. Buffer
-* descriptors, contained in the XBufDescriptor component, are used by the
-* scatter gather operations of the DMA channel to describe the buffers to be
-* processed.
-*
-* Scatter Gather List Operations
-*
-* A scatter gather list may be supported by each DMA channel. The scatter
-* gather list allows buffer descriptors to be put into the list by a device
-* driver which requires scatter gather. The hardware processes the buffer
-* descriptors which are contained in the list and modifies the buffer
-* descriptors to reflect the status of the DMA operations. The device driver
-* is notified by interrupt that specific DMA events occur including scatter
-* gather events. The device driver removes the completed buffer descriptors
-* from the scatter gather list to evaluate the status of each DMA operation.
-*
-* The scatter gather list is created and buffer descriptors are inserted into
-* the list. Buffer descriptors are never removed from the list after it's
-* creation such that a put operation copies from a temporary buffer descriptor
-* to a buffer descriptor in the list. Get operations don't copy from the list
-* to a temporary, but return a pointer to the buffer descriptor in the list.
-* A buffer descriptor in the list may be locked to prevent it from being
-* overwritten by a put operation. This allows the device driver to get a
-* descriptor from a scatter gather list and prevent it from being overwritten
-* until the buffer associated with the buffer descriptor has been processed.
-*
-* The get and put functions only operate on the list and are asynchronous from
-* the hardware which may be using the list of descriptors. This is important
-* because there are no checks in the get and put functions to ensure that the
-* hardware has processed the descriptors. This must be handled by the driver
-* using the DMA scatter gather channel through the use of the other functions.
-* When a scatter gather operation is started, the start function does ensure
-* that the descriptor to start has not already been processed by the hardware
-* and is not the first of a series of descriptors that have not been committed
-* yet.
-*
-* Descriptors are put into the list but not marked as ready to use by the
-* hardware until a commit operation is done. This allows multiple descriptors
-* which may contain a single packet of information for a protocol to be
-* guaranteed not to cause any underflow conditions during transmission. The
-* hardware design only allows descriptors to cause it to stop after a descriptor
-* has been processed rather than before it is processed. A series of
-* descriptors are put into the list followed by a commit operation, or each
-* descriptor may be commited. A commit operation is performed by changing a
-* single descriptor, the first of the series of puts, to indicate that the
-* hardware may now use all descriptors after it. The last descriptor in the
-* list is always set to cause the hardware to stop after it is processed.
-*
-* Typical Scatter Gather Processing
-*
-* The following steps illustrate the typical processing to use the
-* scatter gather features of a DMA channel.
-*
-* 1. Create a scatter gather list for the DMA channel which puts empty buffer
-* descriptors into the list.
-* 2. Create buffer descriptors which describe the buffers to be filled with
-* receive data or the buffers which contain data to be sent.
-* 3. Put buffer descriptors into the DMA channel scatter list such that scatter
-* gather operations are requested.
-* 4. Commit the buffer descriptors in the list such that they are ready to be
-* used by the DMA channel hardware.
-* 5. Start the scatter gather operations of the DMA channel.
-* 6. Process any interrupts which occur as a result of the scatter gather
-* operations or poll the DMA channel to determine the status. This may
-* be accomplished by getting the packet count for the channel and then
-* getting the appropriate number of descriptors from the list for that
-* number of packets.
-*
-* Minimizing Interrupts
-*
-* The Scatter Gather operating mode is designed to reduce the amount of CPU
-* throughput necessary to manage the hardware for devices. A key to the CPU
-* throughput is the number and rate of interrupts that the CPU must service.
-* Devices with higher data rates can cause larger numbers of interrupts and
-* higher frequency interrupts. Ideally the number of interrupts can be reduced
-* by only generating an interrupt when a specific amount of data has been
-* received from the interface. This design suffers from a lack of interrupts
-* when the amount of data received is less than the specified amount of data
-* to generate an interrupt. In order to help minimize the number of interrupts
-* which the CPU must service, an algorithm referred to as "interrupt coalescing"
-* is utilized.
-*
-* Interrupt Coalescing
-*
-* The principle of interrupt coalescing is to wait before generating an
-* interrupt until a certain number of packets have been received or sent. An
-* interrupt is also generated if a smaller number of packets have been received
-* followed by a certain period of time with no packet reception. This is a
-* trade-off of latency for bandwidth and is accomplished using several
-* mechanisms of the hardware including a counter for packets received or
-* transmitted and a packet timer. These two hardware mechanisms work in
-* combination to allow a reduction in the number of interrupts processed by the
-* CPU for packet reception.
-*
-* Unserviced Packet Count
-*
-* The purpose of the packet counter is to count the number of packets received
-* or transmitted and provide an interrupt when a specific number of packets
-* have been processed by the hardware. An interrupt is generated whenever the
-* counter is greater than or equal to the Packet Count Threshold. This counter
-* contains an accurate count of the number of packets that the hardware has
-* processed, either received or transmitted, and the software has not serviced.
-*
-* The packet counter allows the number of interrupts to be reduced by waiting
-* to generate an interrupt until enough packets are received. For packet
-* reception, packet counts of less than the number to generate an interrupt
-* would not be serviced without the addition of a packet timer. This counter is
-* continuously updated by the hardware, not latched to the value at the time
-* the interrupt occurred.
-*
-* The packet counter can be used within the interrupt service routine for the
-* device to reduce the number of interrupts. The interrupt service routine
-* loops while performing processing for each packet which has been received or
-* transmitted and decrements the counter by a specified value. At the same time,
-* the hardware is possibly continuing to receive or transmit more packets such
-* that the software may choose, based upon the value in the packet counter, to
-* remain in the interrupt service routine rather than exiting and immediately
-* returning. This feature should be used with caution as reducing the number of
-* interrupts is beneficial, but unbounded interrupt processing is not desirable.
-*
-* Since the hardware may be incrementing the packet counter simultaneously
-* with the software decrementing the counter, there is a need for atomic
-* operations. The hardware ensures that the operation is atomic such that
-* simultaneous accesses are properly handled.
-*
-* Packet Wait Bound
-*
-* The purpose of the packet wait bound is to augment the unserviced packet
-* count. Whenever there is no pending interrupt for the channel and the
-* unserviced packet count is non-zero, a timer starts counting timeout at the
-* value contained the the packet wait bound register. If the timeout is
-* reached, an interrupt is generated such that the software may service the
-* data which was buffered.
-*
-* NOTES:
-*
-* Special Test Conditions:
-*
-* The scatter gather list processing must be thoroughly tested if changes are
-* made. Testing should include putting and committing single descriptors and
-* putting multiple descriptors followed by a single commit. There are some
-* conditions in the code which handle the exception conditions.
-*
-* The Put Pointer points to the next location in the descriptor list to copy
-* in a new descriptor. The Get Pointer points to the next location in the
-* list to get a descriptor from. The Get Pointer only allows software to
-* have a traverse the list after the hardware has finished processing some
-* number of descriptors. The Commit Pointer points to the descriptor in the
-* list which is to be committed. It is also used to determine that no
-* descriptor is waiting to be commited (NULL). The Last Pointer points to
-* the last descriptor that was put into the list. It typically points
-* to the previous descriptor to the one pointed to by the Put Pointer.
-* Comparisons are done between these pointers to determine when the following
-* special conditions exist.
-
-* Single Put And Commit
-*
-* The buffer descriptor is ready to be used by the hardware so it is important
-* for the descriptor to not appear to be waiting to be committed. The commit
-* pointer is reset when a commit is done indicating there are no descriptors
-* waiting to be committed. In all cases but this one, the descriptor is
-* changed to cause the hardware to go to the next descriptor after processing
-* this one. But in this case, this is the last descriptor in the list such
-* that it must not be changed.
-*
-* 3 Or More Puts And Commit
-*
-* A series of 3 or more puts followed by a single commit is different in that
-* only the 1st descriptor put into the list is changed when the commit is done.
-* This requires each put starting on the 3rd to change the previous descriptor
-* so that it allows the hardware to continue to the next descriptor in the list.
-*
-* The 1st Put Following A Commit
-*
-* The commit caused the commit pointer to be NULL indicating that there are no
-* descriptors waiting to be committed. It is necessary for the next put to set
-* the commit pointer so that a commit must follow the put for the hardware to
-* use the descriptor.
-*
-* <pre>
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- ---- -------- ------------------------------------------------------
-* 1.00a rpm 02/03/03 Removed the XST_DMA_SG_COUNT_EXCEEDED return code
-* from SetPktThreshold.
-* </pre>
-*
-******************************************************************************/
-
-/***************************** Include Files *********************************/
-
-#include "xdma_channel.h"
-#include "xbasic_types.h"
-#include "xio.h"
-#include "xbuf_descriptor.h"
-#include "xstatus.h"
-
-/************************** Constant Definitions *****************************/
-
-#define XDC_SWCR_SG_ENABLE_MASK 0x80000000UL /* scatter gather enable */
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/* the following macro copies selected fields of a buffer descriptor to another
- * buffer descriptor, this was provided by the buffer descriptor component but
- * was moved here since it is only used internally to this component and since
- * it does not copy all fields
- */
-#define CopyBufferDescriptor(InstancePtr, DestinationPtr) \
-{ \
- *((u32 *)DestinationPtr + XBD_CONTROL_OFFSET) = \
- *((u32 *)InstancePtr + XBD_CONTROL_OFFSET); \
- *((u32 *)DestinationPtr + XBD_SOURCE_OFFSET) = \
- *((u32 *)InstancePtr + XBD_SOURCE_OFFSET); \
- *((u32 *)DestinationPtr + XBD_DESTINATION_OFFSET) = \
- *((u32 *)InstancePtr + XBD_DESTINATION_OFFSET); \
- *((u32 *)DestinationPtr + XBD_LENGTH_OFFSET) = \
- *((u32 *)InstancePtr + XBD_LENGTH_OFFSET); \
- *((u32 *)DestinationPtr + XBD_STATUS_OFFSET) = \
- *((u32 *)InstancePtr + XBD_STATUS_OFFSET); \
- *((u32 *)DestinationPtr + XBD_DEVICE_STATUS_OFFSET) = \
- *((u32 *)InstancePtr + XBD_DEVICE_STATUS_OFFSET); \
- *((u32 *)DestinationPtr + XBD_ID_OFFSET) = \
- *((u32 *)InstancePtr + XBD_ID_OFFSET); \
- *((u32 *)DestinationPtr + XBD_FLAGS_OFFSET) = \
- *((u32 *)InstancePtr + XBD_FLAGS_OFFSET); \
- *((u32 *)DestinationPtr + XBD_RQSTED_LENGTH_OFFSET) = \
- *((u32 *)InstancePtr + XBD_RQSTED_LENGTH_OFFSET); \
-}
-
-/************************** Variable Definitions *****************************/
-
-/************************** Function Prototypes ******************************/
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SgStart
-*
-* DESCRIPTION:
-*
-* This function starts a scatter gather operation for a scatter gather
-* DMA channel. The first buffer descriptor in the buffer descriptor list
-* will be started with the scatter gather operation. A scatter gather list
-* should have previously been created for the DMA channel and buffer
-* descriptors put into the scatter gather list such that there are scatter
-* operations ready to be performed.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* RETURN VALUE:
-*
-* A status containing XST_SUCCESS if scatter gather was started successfully
-* for the DMA channel.
-*
-* A value of XST_DMA_SG_NO_LIST indicates the scatter gather list has not
-* been created.
-*
-* A value of XST_DMA_SG_LIST_EMPTY indicates scatter gather was not started
-* because the scatter gather list of the DMA channel does not contain any
-* buffer descriptors that are ready to be processed by the hardware.
-*
-* A value of XST_DMA_SG_IS_STARTED indicates scatter gather was not started
-* because the scatter gather was not stopped, but was already started.
-*
-* A value of XST_DMA_SG_BD_NOT_COMMITTED indicates the buffer descriptor of
-* scatter gather list which was to be started is not committed to the list.
-* This status is more likely if this function is being called from an ISR
-* and non-ISR processing is putting descriptors into the list.
-*
-* A value of XST_DMA_SG_NO_DATA indicates that the buffer descriptor of the
-* scatter gather list which was to be started had already been used by the
-* hardware for a DMA transfer that has been completed.
-*
-* NOTES:
-*
-* It is the responsibility of the caller to get all the buffer descriptors
-* after performing a stop operation and before performing a start operation.
-* If buffer descriptors are not retrieved between stop and start operations,
-* buffer descriptors may be processed by the hardware more than once.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_SgStart(XDmaChannel * InstancePtr)
-{
- u32 Register;
- XBufDescriptor *LastDescriptorPtr;
-
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* if a scatter gather list has not been created yet, return a status */
-
- if (InstancePtr->TotalDescriptorCount == 0) {
- return XST_DMA_SG_NO_LIST;
- }
-
- /* if the scatter gather list exists but is empty then return a status */
-
- if (XDmaChannel_IsSgListEmpty(InstancePtr)) {
- return XST_DMA_SG_LIST_EMPTY;
- }
-
- /* if scatter gather is busy for the DMA channel, return a status because
- * restarting it could lose data
- */
-
- Register = XIo_In32(InstancePtr->RegBaseAddress + XDC_DMAS_REG_OFFSET);
- if (Register & XDC_DMASR_SG_BUSY_MASK) {
- return XST_DMA_SG_IS_STARTED;
- }
-
- /* get the address of the last buffer descriptor which the DMA hardware
- * finished processing
- */
- LastDescriptorPtr =
- (XBufDescriptor *) XIo_In32(InstancePtr->RegBaseAddress +
- XDC_BDA_REG_OFFSET);
-
- /* setup the first buffer descriptor that will be sent when the scatter
- * gather channel is enabled, this is only necessary one time since
- * the BDA register of the channel maintains the last buffer descriptor
- * processed
- */
- if (LastDescriptorPtr == NULL) {
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_BDA_REG_OFFSET,
- (u32) InstancePtr->GetPtr);
- } else {
- XBufDescriptor *NextDescriptorPtr;
-
- /* get the next descriptor to be started, if the status indicates it
- * hasn't already been used by the h/w, then it's OK to start it,
- * s/w sets the status of each descriptor to busy and then h/w clears
- * the busy when it is complete
- */
- NextDescriptorPtr =
- XBufDescriptor_GetNextPtr(LastDescriptorPtr);
-
- if ((XBufDescriptor_GetStatus(NextDescriptorPtr) &
- XDC_DMASR_BUSY_MASK) == 0) {
- return XST_DMA_SG_NO_DATA;
- }
- /* don't start the DMA SG channel if the descriptor to be processed
- * by h/w is to be committed by the s/w, this function can be called
- * such that it interrupts a thread that was putting into the list
- */
- if (NextDescriptorPtr == InstancePtr->CommitPtr) {
- return XST_DMA_SG_BD_NOT_COMMITTED;
- }
- }
-
- /* start the scatter gather operation by clearing the stop bit in the
- * control register and setting the enable bit in the s/w control register,
- * both of these are necessary to cause it to start, right now the order of
- * these statements is important, the software control register should be
- * set 1st. The other order can cause the CPU to have a loss of sync
- * because it cannot read/write the register while the DMA operation is
- * running
- */
-
- Register = XIo_In32(InstancePtr->RegBaseAddress + XDC_SWCR_REG_OFFSET);
-
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_SWCR_REG_OFFSET,
- Register | XDC_SWCR_SG_ENABLE_MASK);
-
- Register = XIo_In32(InstancePtr->RegBaseAddress + XDC_DMAC_REG_OFFSET);
-
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_DMAC_REG_OFFSET,
- Register & ~XDC_DMACR_SG_DISABLE_MASK);
-
- /* indicate the DMA channel scatter gather operation was started
- * successfully
- */
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SgStop
-*
-* DESCRIPTION:
-*
-* This function stops a scatter gather operation for a scatter gather
-* DMA channel. This function starts the process of stopping a scatter
-* gather operation that is in progress and waits for the stop to be completed.
-* Since it waits for the operation to stopped before returning, this function
-* could take an amount of time relative to the size of the DMA scatter gather
-* operation which is in progress. The scatter gather list of the DMA channel
-* is not modified by this function such that starting the scatter gather
-* channel after stopping it will cause it to resume. This operation is
-* considered to be a graceful stop in that the scatter gather operation
-* completes the current buffer descriptor before stopping.
-*
-* If the interrupt is enabled, an interrupt will be generated when the
-* operation is stopped and the caller is responsible for handling the
-* interrupt.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* BufDescriptorPtr is also a return value which contains a pointer to the
-* buffer descriptor which the scatter gather operation completed when it
-* was stopped.
-*
-* RETURN VALUE:
-*
-* A status containing XST_SUCCESS if scatter gather was stopped successfully
-* for the DMA channel.
-*
-* A value of XST_DMA_SG_IS_STOPPED indicates scatter gather was not stoppped
-* because the scatter gather is not started, but was already stopped.
-*
-* BufDescriptorPtr contains a pointer to the buffer descriptor which was
-* completed when the operation was stopped.
-*
-* NOTES:
-*
-* This function implements a loop which polls the hardware for an infinite
-* amount of time. If the hardware is not operating correctly, this function
-* may never return.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_SgStop(XDmaChannel * InstancePtr,
- XBufDescriptor ** BufDescriptorPtr)
-{
- u32 Register;
-
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(BufDescriptorPtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* get the contents of the software control register, if scatter gather is not
- * enabled (started), then return a status because the disable acknowledge
- * would not be generated
- */
- Register = XIo_In32(InstancePtr->RegBaseAddress + XDC_SWCR_REG_OFFSET);
-
- if ((Register & XDC_SWCR_SG_ENABLE_MASK) == 0) {
- return XST_DMA_SG_IS_STOPPED;
- }
-
- /* Ensure the interrupt status for the scatter gather is cleared such
- * that this function will wait til the disable has occurred, writing
- * a 1 to only that bit in the register will clear only it
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_IS_REG_OFFSET,
- XDC_IXR_SG_DISABLE_ACK_MASK);
-
- /* disable scatter gather by writing to the software control register
- * without modifying any other bits of the register
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_SWCR_REG_OFFSET,
- Register & ~XDC_SWCR_SG_ENABLE_MASK);
-
- /* scatter gather does not disable immediately, but after the current
- * buffer descriptor is complete, so wait for the DMA channel to indicate
- * the disable is complete
- */
- do {
- Register =
- XIo_In32(InstancePtr->RegBaseAddress + XDC_IS_REG_OFFSET);
- } while ((Register & XDC_IXR_SG_DISABLE_ACK_MASK) == 0);
-
- /* Ensure the interrupt status for the scatter gather disable is cleared,
- * writing a 1 to only that bit in the register will clear only it
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_IS_REG_OFFSET,
- XDC_IXR_SG_DISABLE_ACK_MASK);
-
- /* set the specified buffer descriptor pointer to point to the buffer
- * descriptor that the scatter gather DMA channel was processing
- */
- *BufDescriptorPtr =
- (XBufDescriptor *) XIo_In32(InstancePtr->RegBaseAddress +
- XDC_BDA_REG_OFFSET);
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_CreateSgList
-*
-* DESCRIPTION:
-*
-* This function creates a scatter gather list in the DMA channel. A scatter
-* gather list consists of a list of buffer descriptors that are available to
-* be used for scatter gather operations. Buffer descriptors are put into the
-* list to request a scatter gather operation to be performed.
-*
-* A number of buffer descriptors are created from the specified memory and put
-* into a buffer descriptor list as empty buffer descriptors. This function must
-* be called before non-empty buffer descriptors may be put into the DMA channel
-* to request scatter gather operations.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* MemoryPtr contains a pointer to the memory which is to be used for buffer
-* descriptors and must not be cached.
-*
-* ByteCount contains the number of bytes for the specified memory to be used
-* for buffer descriptors.
-*
-* RETURN VALUE:
-*
-* A status contains XST_SUCCESS if the scatter gather list was successfully
-* created.
-*
-* A value of XST_DMA_SG_LIST_EXISTS indicates that the scatter gather list
-* was not created because the list has already been created.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_CreateSgList(XDmaChannel * InstancePtr,
- u32 * MemoryPtr, u32 ByteCount)
-{
- XBufDescriptor *BufferDescriptorPtr = (XBufDescriptor *) MemoryPtr;
- XBufDescriptor *PreviousDescriptorPtr = NULL;
- XBufDescriptor *StartOfListPtr = BufferDescriptorPtr;
- u32 UsedByteCount;
-
- /* assert to verify valid input arguments, alignment for those
- * arguments that have alignment restrictions, and at least enough
- * memory for one buffer descriptor
- */
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(MemoryPtr != NULL);
- XASSERT_NONVOID(((u32) MemoryPtr & 3) == 0);
- XASSERT_NONVOID(ByteCount != 0);
- XASSERT_NONVOID(ByteCount >= sizeof (XBufDescriptor));
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* if the scatter gather list has already been created, then return
- * with a status
- */
- if (InstancePtr->TotalDescriptorCount != 0) {
- return XST_DMA_SG_LIST_EXISTS;
- }
-
- /* loop thru the specified memory block and create as many buffer
- * descriptors as possible putting each into the list which is
- * implemented as a ring buffer, make sure not to use any memory which
- * is not large enough for a complete buffer descriptor
- */
- UsedByteCount = 0;
- while ((UsedByteCount + sizeof (XBufDescriptor)) <= ByteCount) {
- /* setup a pointer to the next buffer descriptor in the memory and
- * update # of used bytes to know when all of memory is used
- */
- BufferDescriptorPtr = (XBufDescriptor *) ((u32) MemoryPtr +
- UsedByteCount);
-
- /* initialize the new buffer descriptor such that it doesn't contain
- * garbage which could be used by the DMA hardware
- */
- XBufDescriptor_Initialize(BufferDescriptorPtr);
-
- /* if this is not the first buffer descriptor to be created,
- * then link it to the last created buffer descriptor
- */
- if (PreviousDescriptorPtr != NULL) {
- XBufDescriptor_SetNextPtr(PreviousDescriptorPtr,
- BufferDescriptorPtr);
- }
-
- /* always keep a pointer to the last created buffer descriptor such
- * that they can be linked together in the ring buffer
- */
- PreviousDescriptorPtr = BufferDescriptorPtr;
-
- /* keep a count of the number of descriptors in the list to allow
- * error processing to be performed
- */
- InstancePtr->TotalDescriptorCount++;
-
- UsedByteCount += sizeof (XBufDescriptor);
- }
-
- /* connect the last buffer descriptor created and inserted in the list
- * to the first such that a ring buffer is created
- */
- XBufDescriptor_SetNextPtr(BufferDescriptorPtr, StartOfListPtr);
-
- /* initialize the ring buffer to indicate that there are no
- * buffer descriptors in the list which point to valid data buffers
- */
- InstancePtr->PutPtr = BufferDescriptorPtr;
- InstancePtr->GetPtr = BufferDescriptorPtr;
- InstancePtr->CommitPtr = NULL;
- InstancePtr->LastPtr = BufferDescriptorPtr;
- InstancePtr->ActiveDescriptorCount = 0;
-
- /* indicate the scatter gather list was successfully created */
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_IsSgListEmpty
-*
-* DESCRIPTION:
-*
-* This function determines if the scatter gather list of a DMA channel is
-* empty with regard to buffer descriptors which are pointing to buffers to be
-* used for scatter gather operations.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* RETURN VALUE:
-*
-* A value of TRUE if the scatter gather list is empty, otherwise a value of
-* FALSE.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_IsSgListEmpty(XDmaChannel * InstancePtr)
-{
- /* assert to verify valid input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* if the number of descriptors which are being used in the list is zero
- * then the list is empty
- */
- return (InstancePtr->ActiveDescriptorCount == 0);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_PutDescriptor
-*
-* DESCRIPTION:
-*
-* This function puts a buffer descriptor into the DMA channel scatter
-* gather list. A DMA channel maintains a list of buffer descriptors which are
-* to be processed. This function puts the specified buffer descriptor
-* at the next location in the list. Note that since the list is already intact,
-* the information in the parameter is copied into the list (rather than modify
-* list pointers on the fly).
-*
-* After buffer descriptors are put into the list, they must also be committed
-* by calling another function. This allows multiple buffer descriptors which
-* span a single packet to be put into the list while preventing the hardware
-* from starting the first buffer descriptor of the packet.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* BufferDescriptorPtr is a pointer to the buffer descriptor to be put into
-* the next available location of the scatter gather list.
-*
-* RETURN VALUE:
-*
-* A status which indicates XST_SUCCESS if the buffer descriptor was
-* successfully put into the scatter gather list.
-*
-* A value of XST_DMA_SG_NO_LIST indicates the scatter gather list has not
-* been created.
-*
-* A value of XST_DMA_SG_LIST_FULL indicates the buffer descriptor was not
-* put into the list because the list was full.
-*
-* A value of XST_DMA_SG_BD_LOCKED indicates the buffer descriptor was not
-* put into the list because the buffer descriptor in the list which is to
-* be overwritten was locked. A locked buffer descriptor indicates the higher
-* layered software is still using the buffer descriptor.
-*
-* NOTES:
-*
-* It is necessary to create a scatter gather list for a DMA channel before
-* putting buffer descriptors into it.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_PutDescriptor(XDmaChannel * InstancePtr,
- XBufDescriptor * BufferDescriptorPtr)
-{
- u32 Control;
-
- /* assert to verify valid input arguments and alignment for those
- * arguments that have alignment restrictions
- */
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(BufferDescriptorPtr != NULL);
- XASSERT_NONVOID(((u32) BufferDescriptorPtr & 3) == 0);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* if a scatter gather list has not been created yet, return a status */
-
- if (InstancePtr->TotalDescriptorCount == 0) {
- return XST_DMA_SG_NO_LIST;
- }
-
- /* if the list is full because all descriptors are pointing to valid
- * buffers, then indicate an error, this code assumes no list or an
- * empty list is detected above
- */
- if (InstancePtr->ActiveDescriptorCount ==
- InstancePtr->TotalDescriptorCount) {
- return XST_DMA_SG_LIST_FULL;
- }
-
- /* if the buffer descriptor in the list which is to be overwritten is
- * locked, then don't overwrite it and return a status
- */
- if (XBufDescriptor_IsLocked(InstancePtr->PutPtr)) {
- return XST_DMA_SG_BD_LOCKED;
- }
-
- /* set the scatter gather stop bit in the control word of the descriptor
- * to cause the h/w to stop after it processes this descriptor since it
- * will be the last in the list
- */
- Control = XBufDescriptor_GetControl(BufferDescriptorPtr);
- XBufDescriptor_SetControl(BufferDescriptorPtr,
- Control | XDC_DMACR_SG_DISABLE_MASK);
-
- /* set both statuses in the descriptor so we tell if they are updated with
- * the status of the transfer, the hardware should change the busy in the
- * DMA status to be false when it completes
- */
- XBufDescriptor_SetStatus(BufferDescriptorPtr, XDC_DMASR_BUSY_MASK);
- XBufDescriptor_SetDeviceStatus(BufferDescriptorPtr, 0);
-
- /* copy the descriptor into the next position in the list so it's ready to
- * be used by the h/w, this assumes the descriptor in the list prior to this
- * one still has the stop bit in the control word set such that the h/w
- * use this one yet
- */
- CopyBufferDescriptor(BufferDescriptorPtr, InstancePtr->PutPtr);
-
- /* only the last in the list and the one to be committed have scatter gather
- * disabled in the control word, a commit requires only one descriptor
- * to be changed, when # of descriptors to commit > 2 all others except the
- * 1st and last have scatter gather enabled
- */
- if ((InstancePtr->CommitPtr != InstancePtr->LastPtr) &&
- (InstancePtr->CommitPtr != NULL)) {
- Control = XBufDescriptor_GetControl(InstancePtr->LastPtr);
- XBufDescriptor_SetControl(InstancePtr->LastPtr,
- Control & ~XDC_DMACR_SG_DISABLE_MASK);
- }
-
- /* update the list data based upon putting a descriptor into the list,
- * these operations must be last
- */
- InstancePtr->ActiveDescriptorCount++;
-
- /* only update the commit pointer if it is not already active, this allows
- * it to be deactivated after every commit such that a single descriptor
- * which is committed does not appear to be waiting to be committed
- */
- if (InstancePtr->CommitPtr == NULL) {
- InstancePtr->CommitPtr = InstancePtr->LastPtr;
- }
-
- /* these updates MUST BE LAST after the commit pointer update in order for
- * the commit pointer to track the correct descriptor to be committed
- */
- InstancePtr->LastPtr = InstancePtr->PutPtr;
- InstancePtr->PutPtr = XBufDescriptor_GetNextPtr(InstancePtr->PutPtr);
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_CommitPuts
-*
-* DESCRIPTION:
-*
-* This function commits the buffer descriptors which have been put into the
-* scatter list for the DMA channel since the last commit operation was
-* performed. This enables the calling functions to put several buffer
-* descriptors into the list (e.g.,a packet's worth) before allowing the scatter
-* gather operations to start. This prevents the DMA channel hardware from
-* starting to use the buffer descriptors in the list before they are ready
-* to be used (multiple buffer descriptors for a single packet).
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* RETURN VALUE:
-*
-* A status indicating XST_SUCCESS if the buffer descriptors of the list were
-* successfully committed.
-*
-* A value of XST_DMA_SG_NOTHING_TO_COMMIT indicates that the buffer descriptors
-* were not committed because there was nothing to commit in the list. All the
-* buffer descriptors which are in the list are commited.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_CommitPuts(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* if the buffer descriptor to be committed is already committed or
- * the list is empty (none have been put in), then indicate an error
- */
- if ((InstancePtr->CommitPtr == NULL) ||
- XDmaChannel_IsSgListEmpty(InstancePtr)) {
- return XST_DMA_SG_NOTHING_TO_COMMIT;
- }
-
- /* last descriptor in the list must have scatter gather disabled so the end
- * of the list is hit by h/w, if descriptor to commit is not last in list,
- * commit descriptors by enabling scatter gather in the descriptor
- */
- if (InstancePtr->CommitPtr != InstancePtr->LastPtr) {
- u32 Control;
-
- Control = XBufDescriptor_GetControl(InstancePtr->CommitPtr);
- XBufDescriptor_SetControl(InstancePtr->CommitPtr, Control &
- ~XDC_DMACR_SG_DISABLE_MASK);
- }
- /* Update the commit pointer to indicate that there is nothing to be
- * committed, this state is used by start processing to know that the
- * buffer descriptor to start is not waiting to be committed
- */
- InstancePtr->CommitPtr = NULL;
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetDescriptor
-*
-* DESCRIPTION:
-*
-* This function gets a buffer descriptor from the scatter gather list of the
-* DMA channel. The buffer descriptor is retrieved from the scatter gather list
-* and the scatter gather list is updated to not include the retrieved buffer
-* descriptor. This is typically done after a scatter gather operation
-* completes indicating that a data buffer has been successfully sent or data
-* has been received into the data buffer. The purpose of this function is to
-* allow the device using the scatter gather operation to get the results of the
-* operation.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* BufDescriptorPtr is a pointer to a pointer to the buffer descriptor which
-* was retrieved from the list. The buffer descriptor is not really removed
-* from the list, but it is changed to a state such that the hardware will not
-* use it again until it is put into the scatter gather list of the DMA channel.
-*
-* RETURN VALUE:
-*
-* A status indicating XST_SUCCESS if a buffer descriptor was retrieved from
-* the scatter gather list of the DMA channel.
-*
-* A value of XST_DMA_SG_NO_LIST indicates the scatter gather list has not
-* been created.
-*
-* A value of XST_DMA_SG_LIST_EMPTY indicates no buffer descriptor was
-* retrieved from the list because there are no buffer descriptors to be
-* processed in the list.
-*
-* BufDescriptorPtr is updated to point to the buffer descriptor which was
-* retrieved from the list if the status indicates success.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_GetDescriptor(XDmaChannel * InstancePtr,
- XBufDescriptor ** BufDescriptorPtr)
-{
- u32 Control;
-
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(BufDescriptorPtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* if a scatter gather list has not been created yet, return a status */
-
- if (InstancePtr->TotalDescriptorCount == 0) {
- return XST_DMA_SG_NO_LIST;
- }
-
- /* if the buffer descriptor list is empty, then indicate an error */
-
- if (XDmaChannel_IsSgListEmpty(InstancePtr)) {
- return XST_DMA_SG_LIST_EMPTY;
- }
-
- /* retrieve the next buffer descriptor which is ready to be processed from
- * the buffer descriptor list for the DMA channel, set the control word
- * such that hardware will stop after the descriptor has been processed
- */
- Control = XBufDescriptor_GetControl(InstancePtr->GetPtr);
- XBufDescriptor_SetControl(InstancePtr->GetPtr,
- Control | XDC_DMACR_SG_DISABLE_MASK);
-
- /* set the input argument, which is also an output, to point to the
- * buffer descriptor which is to be retrieved from the list
- */
- *BufDescriptorPtr = InstancePtr->GetPtr;
-
- /* update the pointer of the DMA channel to reflect the buffer descriptor
- * was retrieved from the list by setting it to the next buffer descriptor
- * in the list and indicate one less descriptor in the list now
- */
- InstancePtr->GetPtr = XBufDescriptor_GetNextPtr(InstancePtr->GetPtr);
- InstancePtr->ActiveDescriptorCount--;
-
- return XST_SUCCESS;
-}
-
-/*********************** Interrupt Collescing Functions **********************/
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetPktCount
-*
-* DESCRIPTION:
-*
-* This function returns the value of the unserviced packet count register of
-* the DMA channel. This count represents the number of packets that have been
-* sent or received by the hardware, but not processed by software.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* RETURN VALUE:
-*
-* The unserviced packet counter register contents for the DMA channel.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_GetPktCount(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* get the unserviced packet count from the register and return it */
-
- return XIo_In32(InstancePtr->RegBaseAddress + XDC_UPC_REG_OFFSET);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_DecrementPktCount
-*
-* DESCRIPTION:
-*
-* This function decrements the value of the unserviced packet count register.
-* This informs the hardware that the software has processed a packet. The
-* unserviced packet count register may only be decremented by one in the
-* hardware.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-void
-XDmaChannel_DecrementPktCount(XDmaChannel * InstancePtr)
-{
- u32 Register;
-
- /* assert to verify input arguments */
-
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* if the unserviced packet count register can be decremented (rather
- * than rolling over) decrement it by writing a 1 to the register,
- * this is the only valid write to the register as it serves as an
- * acknowledge that a packet was handled by the software
- */
- Register = XIo_In32(InstancePtr->RegBaseAddress + XDC_UPC_REG_OFFSET);
- if (Register > 0) {
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_UPC_REG_OFFSET,
- 1UL);
- }
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SetPktThreshold
-*
-* DESCRIPTION:
-*
-* This function sets the value of the packet count threshold register of the
-* DMA channel. It reflects the number of packets that must be sent or
-* received before generating an interrupt. This value helps implement
-* a concept called "interrupt coalescing", which is used to reduce the number
-* of interrupts from devices with high data rates.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* Threshold is the value that is written to the threshold register of the
-* DMA channel.
-*
-* RETURN VALUE:
-*
-* A status containing XST_SUCCESS if the packet count threshold was
-* successfully set.
-*
-* NOTES:
-*
-* The packet threshold could be set to larger than the number of descriptors
-* allocated to the DMA channel. In this case, the wait bound will take over
-* and always indicate data arrival. There was a check in this function that
-* returned an error if the treshold was larger than the number of descriptors,
-* but that was removed because users would then have to set the threshold
-* only after they set descriptor space, which is an order dependency that
-* caused confustion.
-*
-******************************************************************************/
-XStatus
-XDmaChannel_SetPktThreshold(XDmaChannel * InstancePtr, u8 Threshold)
-{
- /* assert to verify input arguments, don't assert the threshold since
- * it's range is unknown
- */
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* set the packet count threshold in the register such that an interrupt
- * may be generated, if enabled, when the packet count threshold is
- * reached or exceeded
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_PCT_REG_OFFSET,
- (u32) Threshold);
-
- /* indicate the packet count threshold was successfully set */
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetPktThreshold
-*
-* DESCRIPTION:
-*
-* This function gets the value of the packet count threshold register of the
-* DMA channel. This value reflects the number of packets that must be sent or
-* received before generating an interrupt. This value helps implement a concept
-* called "interrupt coalescing", which is used to reduce the number of
-* interrupts from devices with high data rates.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* RETURN VALUE:
-*
-* The packet threshold register contents for the DMA channel and is a value in
-* the range 0 - 1023. A value of 0 indicates the packet wait bound timer is
-* disabled.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u8
-XDmaChannel_GetPktThreshold(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* get the packet count threshold from the register and return it,
- * since only 8 bits are used, cast it to return only those bits */
-
- return (u8) XIo_In32(InstancePtr->RegBaseAddress + XDC_PCT_REG_OFFSET);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_SetPktWaitBound
-*
-* DESCRIPTION:
-*
-* This function sets the value of the packet wait bound register of the
-* DMA channel. This value reflects the timer value used to trigger an
-* interrupt when not enough packets have been received to reach the packet
-* count threshold.
-*
-* The timer is in millisecond units with +/- 33% accuracy.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* WaitBound is the value, in milliseconds, to be stored in the wait bound
-* register of the DMA channel and is a value in the range 0 - 1023. A value
-* of 0 disables the packet wait bound timer.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-void
-XDmaChannel_SetPktWaitBound(XDmaChannel * InstancePtr, u32 WaitBound)
-{
- /* assert to verify input arguments */
-
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(WaitBound < 1024);
- XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* set the packet wait bound in the register such that interrupt may be
- * generated, if enabled, when packets have not been handled for a specific
- * amount of time
- */
- XIo_Out32(InstancePtr->RegBaseAddress + XDC_PWB_REG_OFFSET, WaitBound);
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XDmaChannel_GetPktWaitBound
-*
-* DESCRIPTION:
-*
-* This function gets the value of the packet wait bound register of the
-* DMA channel. This value contains the timer value used to trigger an
-* interrupt when not enough packets have been received to reach the packet
-* count threshold.
-*
-* The timer is in millisecond units with +/- 33% accuracy.
-*
-* ARGUMENTS:
-*
-* InstancePtr contains a pointer to the DMA channel to operate on. The DMA
-* channel should be configured to use scatter gather in order for this function
-* to be called.
-*
-* RETURN VALUE:
-*
-* The packet wait bound register contents for the DMA channel.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-u32
-XDmaChannel_GetPktWaitBound(XDmaChannel * InstancePtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* get the packet wait bound from the register and return it */
-
- return XIo_In32(InstancePtr->RegBaseAddress + XDC_PWB_REG_OFFSET);
-}
+++ /dev/null
-/*
- * xio.h
- *
- * Defines XIo functions for Xilinx OCP in terms of Linux primitives
- *
- * Author: MontaVista Software, Inc.
- * source@mvista.com
- *
- * Copyright 2002 MontaVista Software Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef XIO_H
-#define XIO_H
-
-#include "xbasic_types.h"
-#include <asm/io.h>
-
-typedef u32 XIo_Address;
-
-extern inline u8
-XIo_In8(XIo_Address InAddress)
-{
- return (u8) in_8((volatile unsigned char *) InAddress);
-}
-extern inline u16
-XIo_In16(XIo_Address InAddress)
-{
- return (u16) in_be16((volatile unsigned short *) InAddress);
-}
-extern inline u32
-XIo_In32(XIo_Address InAddress)
-{
- return (u32) in_be32((volatile unsigned *) InAddress);
-}
-extern inline void
-XIo_Out8(XIo_Address OutAddress, u8 Value)
-{
- out_8((volatile unsigned char *) OutAddress, Value);
-}
-extern inline void
-XIo_Out16(XIo_Address OutAddress, u16 Value)
-{
- out_be16((volatile unsigned short *) OutAddress, Value);
-}
-extern inline void
-XIo_Out32(XIo_Address OutAddress, u32 Value)
-{
- out_be32((volatile unsigned *) OutAddress, Value);
-}
-
-#define XIo_ToLittleEndian16(s,d) (*(u16*)(d) = cpu_to_le16((u16)(s)))
-#define XIo_ToLittleEndian32(s,d) (*(u32*)(d) = cpu_to_le32((u32)(s)))
-#define XIo_ToBigEndian16(s,d) (*(u16*)(d) = cpu_to_be16((u16)(s)))
-#define XIo_ToBigEndian32(s,d) (*(u32*)(d) = cpu_to_be32((u32)(s)))
-
-#define XIo_FromLittleEndian16(s,d) (*(u16*)(d) = le16_to_cpu((u16)(s)))
-#define XIo_FromLittleEndian32(s,d) (*(u32*)(d) = le32_to_cpu((u32)(s)))
-#define XIo_FromBigEndian16(s,d) (*(u16*)(d) = be16_to_cpu((u16)(s)))
-#define XIo_FromBigEndian32(s,d) (*(u32*)(d) = be32_to_cpu((u32)(s)))
-
-#endif /* XIO_H */
+++ /dev/null
-/* $Id: xipif_v1_23_b.c,v 1.1 2002/03/18 23:24:52 linnj Exp $ */
-/******************************************************************************
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
-* AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND
-* SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE,
-* OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,
-* APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION
-* THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
-* AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
-* FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY
-* WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
-* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
-* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
-* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-* FOR A PARTICULAR PURPOSE.
-*
-* (c) Copyright 2002 Xilinx Inc.
-* All rights reserved.
-*
-******************************************************************************/
-/******************************************************************************
-*
-* FILENAME:
-*
-* xipif.c
-*
-* DESCRIPTION:
-*
-* This file contains the implementation of the XIpIf component. The
-* XIpIf component encapsulates the IPIF, which is the standard interface
-* that IP must adhere to when connecting to a bus. The purpose of this
-* component is to encapsulate the IPIF processing such that maintainability
-* is increased. This component does not provide a lot of abstraction from
-* from the details of the IPIF as it is considered a building block for
-* device drivers. A device driver designer must be familiar with the
-* details of the IPIF hardware to use this component.
-*
-* The IPIF hardware provides a building block for all hardware devices such
-* that each device does not need to reimplement these building blocks. The
-* IPIF contains other building blocks, such as FIFOs and DMA channels, which
-* are also common to many devices. These blocks are implemented as separate
-* hardware blocks and instantiated within the IPIF. The primary hardware of
-* the IPIF which is implemented by this software component is the interrupt
-* architecture. Since there are many blocks of a device which may generate
-* interrupts, all the interrupt processing is contained in the common part
-* of the device, the IPIF. This interrupt processing is for the device level
-* only and does not include any processing for the interrupt controller.
-*
-* A device is a mechanism such as an Ethernet MAC. The device is made
-* up of several parts which include an IPIF and the IP. The IPIF contains most
-* of the device infrastructure which is common to all devices, such as
-* interrupt processing, DMA channels, and FIFOs. The infrastructure may also
-* be referred to as IPIF internal blocks since they are part of the IPIF and
-* are separate blocks that can be selected based upon the needs of the device.
-* The IP of the device is the logic that is unique to the device and interfaces
-* to the IPIF of the device.
-*
-* In general, there are two levels of registers within the IPIF. The first
-* level, referred to as the device level, contains registers which are for the
-* entire device. The second level, referred to as the IP level, contains
-* registers which are specific to the IP of the device. The two levels of
-* registers are designed to be hierarchical such that the device level is
-* is a more general register set above the more specific registers of the IP.
-* The IP level of registers provides functionality which is typically common
-* across all devices and allows IP designers to focus on the unique aspects
-* of the IP.
-*
-* The interrupt registers of the IPIF are parameterizable such that the only
-* the number of bits necessary for the device are implemented. The functions
-* of this component do not attempt to validate that the passed in arguments are
-* valid based upon the number of implemented bits. This is necessary to
-* maintain the level of performance required for the common components. Bits
-* of the registers are assigned starting at the least significant bit of the
-* registers.
-*
-* Critical Sections
-*
-* It is the responsibility of the device driver designer to use critical
-* sections as necessary when calling functions of the IPIF. This component
-* does not use critical sections and it does access registers using
-* read-modify-write operations. Calls to IPIF functions from a main thread
-* and from an interrupt context could produce unpredictable behavior such that
-* the caller must provide the appropriate critical sections.
-*
-* Mutual Exclusion
-*
-* The functions of the IPIF are not thread safe such that the caller of all
-* functions is responsible for ensuring mutual exclusion for an IPIF. Mutual
-* exclusion across multiple IPIF components is not necessary.
-*
-* NOTES:
-*
-* None.
-*
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- ---- -------- -----------------------------------------------
-* 1.23b jhl 02/27/01 Repartioned to reduce size
-*
-******************************************************************************/
-
-/***************************** Include Files *********************************/
-
-#include "xipif_v1_23_b.h"
-#include "xio.h"
-
-/************************** Constant Definitions *****************************/
-
-/* the following constant is used to generate bit masks for register testing
- * in the self test functions, it defines the starting bit mask that is to be
- * shifted from the LSB to MSB in creating a register test mask
- */
-#define XIIF_V123B_FIRST_BIT_MASK 1UL
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Variable Definitions *****************************/
-
-/************************** Function Prototypes ******************************/
-
-static XStatus IpIntrSelfTest(u32 RegBaseAddress, u32 IpRegistersWidth);
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* XIpIf_SelfTest
-*
-* DESCRIPTION:
-*
-* This function performs a self test on the specified IPIF component. Many
-* of the registers in the IPIF are tested to ensure proper operation. This
-* function is destructive because the IPIF is reset at the start of the test
-* and at the end of the test to ensure predictable results. The IPIF reset
-* also resets the entire device that uses the IPIF. This function exits with
-* all interrupts for the device disabled.
-*
-* ARGUMENTS:
-*
-* InstancePtr points to the XIpIf to operate on.
-*
-* DeviceRegistersWidth contains the number of bits in the device interrupt
-* registers. The hardware is parameterizable such that only the number of bits
-* necessary to support a device are implemented. This value must be between 0
-* and 32 with 0 indicating there are no device interrupt registers used.
-*
-* IpRegistersWidth contains the number of bits in the IP interrupt registers
-* of the device. The hardware is parameterizable such that only the number of
-* bits necessary to support a device are implemented. This value must be
-* between 0 and 32 with 0 indicating there are no IP interrupt registers used.
-*
-* RETURN VALUE:
-*
-* A value of XST_SUCCESS indicates the test was successful with no errors.
-* Any one of the following error values may also be returned.
-*
-* XST_IPIF_RESET_REGISTER_ERROR The value of a register at reset was
-* not valid
-* XST_IPIF_IP_STATUS_ERROR A write to the IP interrupt status
-* register did not read back correctly
-* XST_IPIF_IP_ACK_ERROR One or more bits in the IP interrupt
-* status register did not reset when acked
-* XST_IPIF_IP_ENABLE_ERROR The IP interrupt enable register
-* did not read back correctly based upon
-* what was written to it
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-
-/* the following constant defines the maximum number of bits which may be
- * used in the registers at the device and IP levels, this is based upon the
- * number of bits available in the registers
- */
-#define XIIF_V123B_MAX_REG_BIT_COUNT 32
-
-XStatus
-XIpIfV123b_SelfTest(u32 RegBaseAddress, u8 IpRegistersWidth)
-{
- XStatus Status;
-
- /* assert to verify arguments are valid */
-
- XASSERT_NONVOID(IpRegistersWidth <= XIIF_V123B_MAX_REG_BIT_COUNT);
-
- /* reset the IPIF such that it's in a known state before the test
- * and interrupts are globally disabled
- */
- XIIF_V123B_RESET(RegBaseAddress);
-
- /* perform the self test on the IP interrupt registers, if
- * it is not successful exit with the status
- */
- Status = IpIntrSelfTest(RegBaseAddress, IpRegistersWidth);
- if (Status != XST_SUCCESS) {
- return Status;
- }
-
- /* reset the IPIF such that it's in a known state before exiting test */
-
- XIIF_V123B_RESET(RegBaseAddress);
-
- /* reaching this point means there were no errors, return success */
-
- return XST_SUCCESS;
-}
-
-/******************************************************************************
-*
-* FUNCTION:
-*
-* IpIntrSelfTest
-*
-* DESCRIPTION:
-*
-* Perform a self test on the IP interrupt registers of the IPIF. This
-* function modifies registers of the IPIF such that they are not guaranteed
-* to be in the same state when it returns. Any bits in the IP interrupt
-* status register which are set are assumed to be set by default after a reset
-* and are not tested in the test.
-*
-* ARGUMENTS:
-*
-* InstancePtr points to the XIpIf to operate on.
-*
-* IpRegistersWidth contains the number of bits in the IP interrupt registers
-* of the device. The hardware is parameterizable such that only the number of
-* bits necessary to support a device are implemented. This value must be
-* between 0 and 32 with 0 indicating there are no IP interrupt registers used.
-*
-* RETURN VALUE:
-*
-* A status indicating XST_SUCCESS if the test was successful. Otherwise, one
-* of the following values is returned.
-*
-* XST_IPIF_RESET_REGISTER_ERROR The value of a register at reset was
-* not valid
-* XST_IPIF_IP_STATUS_ERROR A write to the IP interrupt status
-* register did not read back correctly
-* XST_IPIF_IP_ACK_ERROR One or more bits in the IP status
-* register did not reset when acked
-* XST_IPIF_IP_ENABLE_ERROR The IP interrupt enable register
-* did not read back correctly based upon
-* what was written to it
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-static XStatus
-IpIntrSelfTest(u32 RegBaseAddress, u32 IpRegistersWidth)
-{
- /* ensure that the IP interrupt interrupt enable register is zero
- * as it should be at reset, the interrupt status is dependent upon the
- * IP such that it's reset value is not known
- */
- if (XIIF_V123B_READ_IIER(RegBaseAddress) != 0) {
- return XST_IPIF_RESET_REGISTER_ERROR;
- }
-
- /* if there are any used IP interrupts, then test all of the interrupt
- * bits in all testable registers
- */
- if (IpRegistersWidth > 0) {
- u32 BitCount;
- u32 IpInterruptMask = XIIF_V123B_FIRST_BIT_MASK;
- u32 Mask = XIIF_V123B_FIRST_BIT_MASK; /* bits assigned MSB to LSB */
- u32 InterruptStatus;
-
- /* generate the register masks to be used for IP register tests, the
- * number of bits supported by the hardware is parameterizable such
- * that only that number of bits are implemented in the registers, the
- * bits are allocated starting at the MSB of the registers
- */
- for (BitCount = 1; BitCount < IpRegistersWidth; BitCount++) {
- Mask = Mask << 1;
- IpInterruptMask |= Mask;
- }
-
- /* get the current IP interrupt status register contents, any bits
- * already set must default to 1 at reset in the device and these
- * bits can't be tested in the following test, remove these bits from
- * the mask that was generated for the test
- */
- InterruptStatus = XIIF_V123B_READ_IISR(RegBaseAddress);
- IpInterruptMask &= ~InterruptStatus;
-
- /* set the bits in the device status register and verify them by reading
- * the register again, all bits of the register are latched
- */
- XIIF_V123B_WRITE_IISR(RegBaseAddress, IpInterruptMask);
- InterruptStatus = XIIF_V123B_READ_IISR(RegBaseAddress);
- if ((InterruptStatus & IpInterruptMask) != IpInterruptMask)
- {
- return XST_IPIF_IP_STATUS_ERROR;
- }
-
- /* test to ensure that the bits set in the IP interrupt status register
- * can be cleared by acknowledging them in the IP interrupt status
- * register then read it again and verify it was cleared
- */
- XIIF_V123B_WRITE_IISR(RegBaseAddress, IpInterruptMask);
- InterruptStatus = XIIF_V123B_READ_IISR(RegBaseAddress);
- if ((InterruptStatus & IpInterruptMask) != 0) {
- return XST_IPIF_IP_ACK_ERROR;
- }
-
- /* set the IP interrupt enable set register and then read the IP
- * interrupt enable register and verify the interrupts were enabled
- */
- XIIF_V123B_WRITE_IIER(RegBaseAddress, IpInterruptMask);
- if (XIIF_V123B_READ_IIER(RegBaseAddress) != IpInterruptMask) {
- return XST_IPIF_IP_ENABLE_ERROR;
- }
-
- /* clear the IP interrupt enable register and then read the
- * IP interrupt enable register and verify the interrupts were disabled
- */
- XIIF_V123B_WRITE_IIER(RegBaseAddress, 0);
- if (XIIF_V123B_READ_IIER(RegBaseAddress) != 0) {
- return XST_IPIF_IP_ENABLE_ERROR;
- }
- }
- return XST_SUCCESS;
-}
+++ /dev/null
-/* $Id: xipif_v1_23_b.h,v 1.1 2002/03/18 23:24:52 linnj Exp $ */
-/******************************************************************************
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
-* AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND
-* SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE,
-* OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,
-* APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION
-* THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
-* AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
-* FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY
-* WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
-* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
-* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
-* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-* FOR A PARTICULAR PURPOSE.
-*
-* (c) Copyright 2002 Xilinx Inc.
-* All rights reserved.
-*
-******************************************************************************/
-/******************************************************************************
-*
-* FILENAME:
-*
-* xipif.h
-*
-* DESCRIPTION:
-*
-* The XIpIf component encapsulates the IPIF, which is the standard interface
-* that IP must adhere to when connecting to a bus. The purpose of this
-* component is to encapsulate the IPIF processing such that maintainability
-* is increased. This component does not provide a lot of abstraction from
-* from the details of the IPIF as it is considered a building block for
-* device drivers. A device driver designer must be familiar with the
-* details of the IPIF hardware to use this component.
-*
-* The IPIF hardware provides a building block for all hardware devices such
-* that each device does not need to reimplement these building blocks. The
-* IPIF contains other building blocks, such as FIFOs and DMA channels, which
-* are also common to many devices. These blocks are implemented as separate
-* hardware blocks and instantiated within the IPIF. The primary hardware of
-* the IPIF which is implemented by this software component is the interrupt
-* architecture. Since there are many blocks of a device which may generate
-* interrupts, all the interrupt processing is contained in the common part
-* of the device, the IPIF. This interrupt processing is for the device level
-* only and does not include any processing for the interrupt controller.
-*
-* A device is a mechanism such as an Ethernet MAC. The device is made
-* up of several parts which include an IPIF and the IP. The IPIF contains most
-* of the device infrastructure which is common to all devices, such as
-* interrupt processing, DMA channels, and FIFOs. The infrastructure may also
-* be referred to as IPIF internal blocks since they are part of the IPIF and
-* are separate blocks that can be selected based upon the needs of the device.
-* The IP of the device is the logic that is unique to the device and interfaces
-* to the IPIF of the device.
-*
-* In general, there are two levels of registers within the IPIF. The first
-* level, referred to as the device level, contains registers which are for the
-* entire device. The second level, referred to as the IP level, contains
-* registers which are specific to the IP of the device. The two levels of
-* registers are designed to be hierarchical such that the device level is
-* is a more general register set above the more specific registers of the IP.
-* The IP level of registers provides functionality which is typically common
-* across all devices and allows IP designers to focus on the unique aspects
-* of the IP.
-*
-* Critical Sections
-*
-* It is the responsibility of the device driver designer to use critical
-* sections as necessary when calling functions of the IPIF. This component
-* does not use critical sections and it does access registers using
-* read-modify-write operations. Calls to IPIF functions from a main thread
-* and from an interrupt context could produce unpredictable behavior such that
-* the caller must provide the appropriate critical sections.
-*
-* Mutual Exclusion
-*
-* The functions of the IPIF are not thread safe such that the caller of all
-* functions is responsible for ensuring mutual exclusion for an IPIF. Mutual
-* exclusion across multiple IPIF components is not necessary.
-*
-* NOTES:
-*
-* None.
-*
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- ---- -------- -----------------------------------------------
-* 1.23b jhl 02/27/01 Repartioned to minimize size
-*
-******************************************************************************/
-
-#ifndef XIPIF_H /* prevent circular inclusions */
-#define XIPIF_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-#include "xbasic_types.h"
-#include "xstatus.h"
-#include "xversion.h"
-
-/************************** Constant Definitions *****************************/
-
-/* the following constants define the register offsets for the registers of the
- * IPIF, there are some holes in the memory map for reserved addresses to allow
- * other registers to be added and still match the memory map of the interrupt
- * controller registers
- */
-#define XIIF_V123B_DISR_OFFSET 0UL /* device interrupt status register */
-#define XIIF_V123B_DIPR_OFFSET 4UL /* device interrupt pending register */
-#define XIIF_V123B_DIER_OFFSET 8UL /* device interrupt enable register */
-#define XIIF_V123B_DIIR_OFFSET 24UL /* device interrupt ID register */
-#define XIIF_V123B_DGIER_OFFSET 28UL /* device global interrupt enable reg */
-#define XIIF_V123B_IISR_OFFSET 32UL /* IP interrupt status register */
-#define XIIF_V123B_IIER_OFFSET 40UL /* IP interrupt enable register */
-#define XIIF_V123B_RESETR_OFFSET 64UL /* reset register */
-
-#define XIIF_V123B_RESET_MASK 0xAUL
-
-/* the following constant is used for the device global interrupt enable
- * register, to enable all interrupts for the device, this is the only bit
- * in the register
- */
-#define XIIF_V123B_GINTR_ENABLE_MASK 0x80000000UL
-
-/* the following constants contain the masks to identify each internal IPIF
- * condition in the device registers of the IPIF, interrupts are assigned
- * in the register from LSB to the MSB
- */
-#define XIIF_V123B_ERROR_MASK 1UL /* LSB of the register */
-
-/* The following constants contain interrupt IDs which identify each internal
- * IPIF condition, this value must correlate with the mask constant for the
- * error
- */
-#define XIIF_V123B_ERROR_INTERRUPT_ID 0 /* interrupt bit #, (LSB = 0) */
-#define XIIF_V123B_NO_INTERRUPT_ID 128 /* no interrupts are pending */
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_RESET
-*
-* DESCRIPTION:
-*
-* Reset the IPIF component and hardware. This is a destructive operation that
-* could cause the loss of data since resetting the IPIF of a device also
-* resets the device using the IPIF and any blocks, such as FIFOs or DMA
-* channels, within the IPIF. All registers of the IPIF will contain their
-* reset value when this function returns.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-
-/* the following constant is used in the reset register to cause the IPIF to
- * reset
- */
-#define XIIF_V123B_RESET(RegBaseAddress) \
- XIo_Out32(RegBaseAddress + XIIF_V123B_RESETR_OFFSET, XIIF_V123B_RESET_MASK)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_WRITE_DISR
-*
-* DESCRIPTION:
-*
-* This function sets the device interrupt status register to the value.
-* This register indicates the status of interrupt sources for a device
-* which contains the IPIF. The status is independent of whether interrupts
-* are enabled and could be used for polling a device at a higher level rather
-* than a more detailed level.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* device which contains the IPIF. With the exception of some internal IPIF
-* conditions, the contents of this register are not latched but indicate
-* the live status of the interrupt sources within the device. Writing any of
-* the non-latched bits of the register will have no effect on the register.
-*
-* For the latched bits of this register only, setting a bit which is zero
-* within this register causes an interrupt to generated. The device global
-* interrupt enable register and the device interrupt enable register must be set
-* appropriately to allow an interrupt to be passed out of the device. The
-* interrupt is cleared by writing to this register with the bits to be
-* cleared set to a one and all others to zero. This register implements a
-* toggle on write functionality meaning any bits which are set in the value
-* written cause the bits in the register to change to the opposite state.
-*
-* This function writes the specified value to the register such that
-* some bits may be set and others cleared. It is the caller's responsibility
-* to get the value of the register prior to setting the value to prevent a
-* destructive behavior.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* Status contains the value to be written to the interrupt status register of
-* the device. The only bits which can be written are the latched bits which
-* contain the internal IPIF conditions. The following values may be used to
-* set the status register or clear an interrupt condition.
-*
-* XIIF_V123B_ERROR_MASK Indicates a device error in the IPIF
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_WRITE_DISR(RegBaseAddress, Status) \
- XIo_Out32((RegBaseAddress) + XIIF_V123B_DISR_OFFSET, (Status))
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_READ_DISR
-*
-* DESCRIPTION:
-*
-* This function gets the device interrupt status register contents.
-* This register indicates the status of interrupt sources for a device
-* which contains the IPIF. The status is independent of whether interrupts
-* are enabled and could be used for polling a device at a higher level.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* device which contains the IPIF. With the exception of some internal IPIF
-* conditions, the contents of this register are not latched but indicate
-* the live status of the interrupt sources within the device.
-*
-* For only the latched bits of this register, the interrupt may be cleared by
-* writing to these bits in the status register.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* A status which contains the value read from the interrupt status register of
-* the device. The bit definitions are specific to the device with
-* the exception of the latched internal IPIF condition bits. The following
-* values may be used to detect internal IPIF conditions in the status.
-*
-* XIIF_V123B_ERROR_MASK Indicates a device error in the IPIF
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_READ_DISR(RegBaseAddress) \
- XIo_In32((RegBaseAddress) + XIIF_V123B_DISR_OFFSET)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_WRITE_DIER
-*
-* DESCRIPTION:
-*
-* This function sets the device interrupt enable register contents.
-* This register controls which interrupt sources of the device are allowed to
-* generate an interrupt. The device global interrupt enable register must also
-* be set appropriately for an interrupt to be passed out of the device.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* device which contains the IPIF. Setting a bit in this register enables that
-* interrupt source to generate an interrupt. Clearing a bit in this register
-* disables interrupt generation for that interrupt source.
-*
-* This function writes only the specified value to the register such that
-* some interrupts source may be enabled and others disabled. It is the
-* caller's responsibility to get the value of the interrupt enable register
-* prior to setting the value to prevent an destructive behavior.
-*
-* An interrupt source may not be enabled to generate an interrupt, but can
-* still be polled in the interrupt status register.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* Enable contains the value to be written to the interrupt enable register
-* of the device. The bit definitions are specific to the device with
-* the exception of the internal IPIF conditions. The following
-* values may be used to enable the internal IPIF conditions interrupts.
-*
-* XIIF_V123B_ERROR_MASK Indicates a device error in the IPIF
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* Signature: u32 XIIF_V123B_WRITE_DIER(u32 RegBaseAddress,
-* u32 Enable)
-*
-******************************************************************************/
-#define XIIF_V123B_WRITE_DIER(RegBaseAddress, Enable) \
- XIo_Out32((RegBaseAddress) + XIIF_V123B_DIER_OFFSET, (Enable))
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_READ_DIER
-*
-* DESCRIPTION:
-*
-* This function gets the device interrupt enable register contents.
-* This register controls which interrupt sources of the device
-* are allowed to generate an interrupt. The device global interrupt enable
-* register and the device interrupt enable register must also be set
-* appropriately for an interrupt to be passed out of the device.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* device which contains the IPIF. Setting a bit in this register enables that
-* interrupt source to generate an interrupt if the global enable is set
-* appropriately. Clearing a bit in this register disables interrupt generation
-* for that interrupt source regardless of the global interrupt enable.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* The value read from the interrupt enable register of the device. The bit
-* definitions are specific to the device with the exception of the internal
-* IPIF conditions. The following values may be used to determine from the
-* value if the internal IPIF conditions interrupts are enabled.
-*
-* XIIF_V123B_ERROR_MASK Indicates a device error in the IPIF
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_READ_DIER(RegBaseAddress) \
- XIo_In32((RegBaseAddress) + XIIF_V123B_DIER_OFFSET)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_READ_DIPR
-*
-* DESCRIPTION:
-*
-* This function gets the device interrupt pending register contents.
-* This register indicates the pending interrupt sources, those that are waiting
-* to be serviced by the software, for a device which contains the IPIF.
-* An interrupt must be enabled in the interrupt enable register of the IPIF to
-* be pending.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* the device which contains the IPIF. With the exception of some internal IPIF
-* conditions, the contents of this register are not latched since the condition
-* is latched in the IP interrupt status register, by an internal block of the
-* IPIF such as a FIFO or DMA channel, or by the IP of the device. This register
-* is read only and is not latched, but it is necessary to acknowledge (clear)
-* the interrupt condition by performing the appropriate processing for the IP
-* or block within the IPIF.
-*
-* This register can be thought of as the contents of the interrupt status
-* register ANDed with the contents of the interrupt enable register.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* The value read from the interrupt pending register of the device. The bit
-* definitions are specific to the device with the exception of the latched
-* internal IPIF condition bits. The following values may be used to detect
-* internal IPIF conditions in the value.
-*
-* XIIF_V123B_ERROR_MASK Indicates a device error in the IPIF
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_READ_DIPR(RegBaseAddress) \
- XIo_In32((RegBaseAddress) + XIIF_V123B_DIPR_OFFSET)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_READ_DIIR
-*
-* DESCRIPTION:
-*
-* This function gets the device interrupt ID for the highest priority interrupt
-* which is pending from the interrupt ID register. This function provides
-* priority resolution such that faster interrupt processing is possible.
-* Without priority resolution, it is necessary for the software to read the
-* interrupt pending register and then check each interrupt source to determine
-* if an interrupt is pending. Priority resolution becomes more important as the
-* number of interrupt sources becomes larger.
-*
-* Interrupt priorities are based upon the bit position of the interrupt in the
-* interrupt pending register with bit 0 being the highest priority. The
-* interrupt ID is the priority of the interrupt, 0 - 31, with 0 being the
-* highest priority. The interrupt ID register is live rather than latched such
-* that multiple calls to this function may not yield the same results. A
-* special value, outside of the interrupt priority range of 0 - 31, is
-* contained in the register which indicates that no interrupt is pending. This
-* may be useful for allowing software to continue processing interrupts in a
-* loop until there are no longer any interrupts pending.
-*
-* The interrupt ID is designed to allow a function pointer table to be used
-* in the software such that the interrupt ID is used as an index into that
-* table. The function pointer table could contain an instance pointer, such
-* as to DMA channel, and a function pointer to the function which handles
-* that interrupt. This design requires the interrupt processing of the device
-* driver to be partitioned into smaller more granular pieces based upon
-* hardware used by the device, such as DMA channels and FIFOs.
-*
-* It is not mandatory that this function be used by the device driver software.
-* It may choose to read the pending register and resolve the pending interrupt
-* priorities on it's own.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* An interrupt ID, 0 - 31, which identifies the highest priority interrupt
-* which is pending. A value of XIIF_NO_INTERRUPT_ID indicates that there is
-* no interrupt pending. The following values may be used to identify the
-* interrupt ID for the internal IPIF interrupts.
-*
-* XIIF_V123B_ERROR_INTERRUPT_ID Indicates a device error in the IPIF
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_READ_DIIR(RegBaseAddress) \
- XIo_In32((RegBaseAddress) + XIIF_V123B_DIIR_OFFSET)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_GLOBAL_INTR_DISABLE
-*
-* DESCRIPTION:
-*
-* This function disables all interrupts for the device by writing to the global
-* interrupt enable register. This register provides the ability to disable
-* interrupts without any modifications to the interrupt enable register such
-* that it is minimal effort to restore the interrupts to the previous enabled
-* state. The corresponding function, XIpIf_GlobalIntrEnable, is provided to
-* restore the interrupts to the previous enabled state. This function is
-* designed to be used in critical sections of device drivers such that it is
-* not necessary to disable other device interrupts.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_GINTR_DISABLE(RegBaseAddress) \
- XIo_Out32((RegBaseAddress) + XIIF_V123B_DGIER_OFFSET, 0)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_GINTR_ENABLE
-*
-* DESCRIPTION:
-*
-* This function writes to the global interrupt enable register to enable
-* interrupts from the device. This register provides the ability to enable
-* interrupts without any modifications to the interrupt enable register such
-* that it is minimal effort to restore the interrupts to the previous enabled
-* state. This function does not enable individual interrupts as the interrupt
-* enable register must be set appropriately. This function is designed to be
-* used in critical sections of device drivers such that it is not necessary to
-* disable other device interrupts.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_GINTR_ENABLE(RegBaseAddress) \
- XIo_Out32((RegBaseAddress) + XIIF_V123B_DGIER_OFFSET, \
- XIIF_V123B_GINTR_ENABLE_MASK)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_IS_GINTR_ENABLED
-*
-* DESCRIPTION:
-*
-* This function determines if interrupts are enabled at the global level by
-* reading the gloabl interrupt register. This register provides the ability to
-* disable interrupts without any modifications to the interrupt enable register
-* such that it is minimal effort to restore the interrupts to the previous
-* enabled state.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* XTRUE if interrupts are enabled for the IPIF, XFALSE otherwise.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_IS_GINTR_ENABLED(RegBaseAddress) \
- (XIo_In32((RegBaseAddress) + XIIF_V123B_DGIER_OFFSET) == \
- XIIF_V123B_GINTR_ENABLE_MASK)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_WRITE_IISR
-*
-* DESCRIPTION:
-*
-* This function sets the IP interrupt status register to the specified value.
-* This register indicates the status of interrupt sources for the IP of the
-* device. The IP is defined as the part of the device that connects to the
-* IPIF. The status is independent of whether interrupts are enabled such that
-* the status register may also be polled when interrupts are not enabled.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* IP. All bits of this register are latched. Setting a bit which is zero
-* within this register causes an interrupt to be generated. The device global
-* interrupt enable register and the device interrupt enable register must be set
-* appropriately to allow an interrupt to be passed out of the device. The
-* interrupt is cleared by writing to this register with the bits to be
-* cleared set to a one and all others to zero. This register implements a
-* toggle on write functionality meaning any bits which are set in the value
-* written cause the bits in the register to change to the opposite state.
-*
-* This function writes only the specified value to the register such that
-* some status bits may be set and others cleared. It is the caller's
-* responsibility to get the value of the register prior to setting the value
-* to prevent an destructive behavior.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* Status contains the value to be written to the IP interrupt status
-* register. The bit definitions are specific to the device IP.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_WRITE_IISR(RegBaseAddress, Status) \
- XIo_Out32((RegBaseAddress) + XIIF_V123B_IISR_OFFSET, (Status))
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_READ_IISR
-*
-* DESCRIPTION:
-*
-* This function gets the contents of the IP interrupt status register.
-* This register indicates the status of interrupt sources for the IP of the
-* device. The IP is defined as the part of the device that connects to the
-* IPIF. The status is independent of whether interrupts are enabled such
-* that the status register may also be polled when interrupts are not enabled.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* device. All bits of this register are latched. Writing a 1 to a bit within
-* this register causes an interrupt to be generated if enabled in the interrupt
-* enable register and the global interrupt enable is set. Since the status is
-* latched, each status bit must be acknowledged in order for the bit in the
-* status register to be updated. Each bit can be acknowledged by writing a
-* 0 to the bit in the status register.
-
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* A status which contains the value read from the IP interrupt status register.
-* The bit definitions are specific to the device IP.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_READ_IISR(RegBaseAddress) \
- XIo_In32((RegBaseAddress) + XIIF_V123B_IISR_OFFSET)
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_WRITE_IIER
-*
-* DESCRIPTION:
-*
-* This function sets the IP interrupt enable register contents. This register
-* controls which interrupt sources of the IP are allowed to generate an
-* interrupt. The global interrupt enable register and the device interrupt
-* enable register must also be set appropriately for an interrupt to be
-* passed out of the device containing the IPIF and the IP.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* IP. Setting a bit in this register enables the interrupt source to generate
-* an interrupt. Clearing a bit in this register disables interrupt generation
-* for that interrupt source.
-*
-* This function writes only the specified value to the register such that
-* some interrupt sources may be enabled and others disabled. It is the
-* caller's responsibility to get the value of the interrupt enable register
-* prior to setting the value to prevent an destructive behavior.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* Enable contains the value to be written to the IP interrupt enable register.
-* The bit definitions are specific to the device IP.
-*
-* RETURN VALUE:
-*
-* None.
-*
-* NOTES:
-*
-* None.
-*
-******************************************************************************/
-#define XIIF_V123B_WRITE_IIER(RegBaseAddress, Enable) \
- XIo_Out32((RegBaseAddress) + XIIF_V123B_IIER_OFFSET, (Enable))
-
-/******************************************************************************
-*
-* MACRO:
-*
-* XIIF_V123B_READ_IIER
-*
-* DESCRIPTION:
-*
-*
-* This function gets the IP interrupt enable register contents. This register
-* controls which interrupt sources of the IP are allowed to generate an
-* interrupt. The global interrupt enable register and the device interrupt
-* enable register must also be set appropriately for an interrupt to be
-* passed out of the device containing the IPIF and the IP.
-*
-* Each bit of the register correlates to a specific interrupt source within the
-* IP. Setting a bit in this register enables the interrupt source to generate
-* an interrupt. Clearing a bit in this register disables interrupt generation
-* for that interrupt source.
-*
-* ARGUMENTS:
-*
-* RegBaseAddress contains the base address of the IPIF registers.
-*
-* RETURN VALUE:
-*
-* The contents read from the IP interrupt enable register. The bit definitions
-* are specific to the device IP.
-*
-* NOTES:
-*
-* Signature: u32 XIIF_V123B_READ_IIER(u32 RegBaseAddress)
-*
-******************************************************************************/
-#define XIIF_V123B_READ_IIER(RegBaseAddress) \
- XIo_In32((RegBaseAddress) + XIIF_V123B_IIER_OFFSET)
-
-/************************** Function Prototypes ******************************/
-
-/*
- * Initialization Functions
- */
-XStatus XIpIfV123b_SelfTest(u32 RegBaseAddress, u8 IpRegistersWidth);
-
-#endif /* end of protection macro */
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-******************************************************************************/
-/*****************************************************************************/
-/*
-*
-* @file xpacket_fifo_v1_00_b.c
-*
-* Contains functions for the XPacketFifoV100b component. See xpacket_fifo_v1_00_b.h
-* for more information about the component.
-*
-* <pre>
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- ---- -------- -----------------------------------------------
-* 1.00b rpm 03/26/02 First release
-* </pre>
-*
-*****************************************************************************/
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-#include "xio.h"
-#include "xstatus.h"
-#include "xpacket_fifo_v1_00_b.h"
-
-/************************** Constant Definitions *****************************/
-
-/* width of a FIFO word */
-
-#define XPF_FIFO_WIDTH_BYTE_COUNT 4UL
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************* Variable Definitions ******************************/
-
-/************************** Function Prototypes ******************************/
-
-/*****************************************************************************/
-/*
-*
-* This function initializes a packet FIFO. Initialization resets the
-* FIFO such that it's empty and ready to use.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-* @param RegBaseAddress contains the base address of the registers for
-* the packet FIFO.
-* @param DataBaseAddress contains the base address of the data for
-* the packet FIFO.
-*
-* @return
-*
-* Always returns XST_SUCCESS.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XPacketFifoV100b_Initialize(XPacketFifoV100b * InstancePtr,
- u32 RegBaseAddress, u32 DataBaseAddress)
-{
- /* assert to verify input argument are valid */
-
- XASSERT_NONVOID(InstancePtr != NULL);
-
- /* initialize the component variables to the specified state */
-
- InstancePtr->RegBaseAddress = RegBaseAddress;
- InstancePtr->DataBaseAddress = DataBaseAddress;
- InstancePtr->IsReady = XCOMPONENT_IS_READY;
-
- /* reset the FIFO such that it's empty and ready to use and indicate the
- * initialization was successful, note that the is ready variable must be
- * set prior to calling the reset function to prevent an assert
- */
- XPF_V100B_RESET(InstancePtr);
-
- return XST_SUCCESS;
-}
-
-/*****************************************************************************/
-/*
-*
-* This function performs a self-test on the specified packet FIFO. The self
-* test resets the FIFO and reads a register to determine if it is the correct
-* reset value. This test is destructive in that any data in the FIFO will
-* be lost.
-*
-* @param InstancePtr is a pointer to the packet FIFO to be operated on.
-*
-* @param FifoType specifies the type of FIFO, read or write, for the self test.
-* The FIFO type is specified by the values XPF_READ_FIFO_TYPE or
-* XPF_WRITE_FIFO_TYPE.
-*
-* @return
-*
-* XST_SUCCESS is returned if the selftest is successful, or
-* XST_PFIFO_BAD_REG_VALUE indicating that the value readback from the
-* occupancy/vacancy count register after a reset does not match the
-* specified reset value.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XPacketFifoV100b_SelfTest(XPacketFifoV100b * InstancePtr, u32 FifoType)
-{
- u32 Register;
-
- /* assert to verify valid input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID((FifoType == XPF_READ_FIFO_TYPE) ||
- (FifoType == XPF_WRITE_FIFO_TYPE));
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* reset the fifo and then check to make sure the occupancy/vacancy
- * register contents are correct for a reset condition
- */
- XPF_V100B_RESET(InstancePtr);
-
- Register = XIo_In32(InstancePtr->RegBaseAddress +
- XPF_COUNT_STATUS_REG_OFFSET);
-
- /* check the value of the register to ensure that it's correct for the
- * specified FIFO type since both FIFO types reset to empty, but a bit
- * in the register changes definition based upon FIFO type
- */
-
- if (FifoType == XPF_READ_FIFO_TYPE) {
- /* check the regiser value for a read FIFO which should be empty */
-
- if (Register != XPF_EMPTY_FULL_MASK) {
- return XST_PFIFO_BAD_REG_VALUE;
- }
- } else {
- /* check the register value for a write FIFO which should not be full
- * on reset
- */
- if ((Register & XPF_EMPTY_FULL_MASK) != 0) {
- return XST_PFIFO_BAD_REG_VALUE;
- }
- }
-
- /* the test was successful */
-
- return XST_SUCCESS;
-}
-
-/*****************************************************************************/
-/*
-*
-* Read data from a FIFO and puts it into a specified buffer. The packet FIFO is
-* currently 32 bits wide such that an input buffer which is a series of bytes
-* is filled from the FIFO a word at a time. If the requested byte count is not
-* a multiple of 32 bit words, it is necessary for this function to format the
-* remaining 32 bit word from the FIFO into a series of bytes in the buffer.
-* There may be up to 3 extra bytes which must be extracted from the last word
-* of the FIFO and put into the buffer.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-* @param BufferPtr points to the memory buffer to write the data into. This
-* buffer must be 32 bit aligned or an alignment exception could be
-* generated. Since this buffer is a byte buffer, the data is assumed to
-* be endian independent.
-* @param ByteCount contains the number of bytes to read from the FIFO. This
-* number of bytes must be present in the FIFO or an error will be
-* returned.
-*
-* @return
-*
-* XST_SUCCESS indicates the operation was successful. If the number of
-* bytes specified by the byte count is not present in the FIFO
-* XST_PFIFO_LACK_OF_DATA is returned.
-*
-* If the function was successful, the specified buffer is modified to contain
-* the bytes which were removed from the FIFO.
-*
-* @note
-*
-* Note that the exact number of bytes which are present in the FIFO is
-* not known by this function. It can only check for a number of 32 bit
-* words such that if the byte count specified is incorrect, but is still
-* possible based on the number of words in the FIFO, up to 3 garbage bytes
-* may be present at the end of the buffer.
-* <br><br>
-* This function assumes that if the device consuming data from the FIFO is
-* a byte device, the order of the bytes to be consumed is from the most
-* significant byte to the least significant byte of a 32 bit word removed
-* from the FIFO.
-*
-******************************************************************************/
-XStatus
-XPacketFifoV100b_Read(XPacketFifoV100b * InstancePtr,
- u8 * BufferPtr, u32 ByteCount)
-{
- u32 FifoCount;
- u32 WordCount;
- u32 ExtraByteCount;
- u32 *WordBuffer = (u32 *) BufferPtr;
-
- /* assert to verify valid input arguments including 32 bit alignment of
- * the buffer pointer
- */
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(BufferPtr != NULL);
- XASSERT_NONVOID(((u32) BufferPtr &
- (XPF_FIFO_WIDTH_BYTE_COUNT - 1)) == 0);
- XASSERT_NONVOID(ByteCount != 0);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* get the count of how many 32 bit words are in the FIFO, if there aren't
- * enought words to satisfy the request, return an error
- */
-
- FifoCount = XIo_In32(InstancePtr->RegBaseAddress +
- XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
-
- if ((FifoCount * XPF_FIFO_WIDTH_BYTE_COUNT) < ByteCount) {
- return XST_PFIFO_LACK_OF_DATA;
- }
-
- /* calculate the number of words to read from the FIFO before the word
- * containing the extra bytes, and calculate the number of extra bytes
- * the extra bytes are defined as those at the end of the buffer when
- * the buffer does not end on a 32 bit boundary
- */
- WordCount = ByteCount / XPF_FIFO_WIDTH_BYTE_COUNT;
- ExtraByteCount = ByteCount % XPF_FIFO_WIDTH_BYTE_COUNT;
-
- /* Read the 32 bit words from the FIFO for all the buffer except the
- * last word which contains the extra bytes, the following code assumes
- * that the buffer is 32 bit aligned, otherwise an alignment exception could
- * be generated
- */
- for (FifoCount = 0; FifoCount < WordCount; FifoCount++) {
- WordBuffer[FifoCount] = XIo_In32(InstancePtr->DataBaseAddress);
- }
-
- /* if there are extra bytes to handle, read the last word from the FIFO
- * and insert the extra bytes into the buffer
- */
- if (ExtraByteCount > 0) {
- u32 LastWord;
- u8 *ExtraBytesBuffer = (u8 *) (WordBuffer + WordCount);
-
- /* get the last word from the FIFO for the extra bytes */
-
- LastWord = XIo_In32(InstancePtr->DataBaseAddress);
-
- /* one extra byte in the last word, put the byte into the next location
- * of the buffer, bytes in a word of the FIFO are ordered from most
- * significant byte to least
- */
- if (ExtraByteCount == 1) {
- ExtraBytesBuffer[0] = (u8) (LastWord >> 24);
- }
-
- /* two extra bytes in the last word, put each byte into the next two
- * locations of the buffer
- */
- else if (ExtraByteCount == 2) {
- ExtraBytesBuffer[0] = (u8) (LastWord >> 24);
- ExtraBytesBuffer[1] = (u8) (LastWord >> 16);
- }
- /* three extra bytes in the last word, put each byte into the next three
- * locations of the buffer
- */
- else if (ExtraByteCount == 3) {
- ExtraBytesBuffer[0] = (u8) (LastWord >> 24);
- ExtraBytesBuffer[1] = (u8) (LastWord >> 16);
- ExtraBytesBuffer[2] = (u8) (LastWord >> 8);
- }
- }
- return XST_SUCCESS;
-}
-
-/*****************************************************************************/
-/*
-*
-* Write data into a packet FIFO. The packet FIFO is currently 32 bits wide
-* such that an input buffer which is a series of bytes must be written into the
-* FIFO a word at a time. If the buffer is not a multiple of 32 bit words, it is
-* necessary for this function to format the remaining bytes into a single 32
-* bit word to be inserted into the FIFO. This is necessary to avoid any
-* accesses past the end of the buffer.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-* @param BufferPtr points to the memory buffer that data is to be read from
-* and written into the FIFO. Since this buffer is a byte buffer, the data
-* is assumed to be endian independent. This buffer must be 32 bit aligned
-* or an alignment exception could be generated.
-* @param ByteCount contains the number of bytes to read from the buffer and to
-* write to the FIFO.
-*
-* @return
-*
-* XST_SUCCESS is returned if the operation succeeded. If there is not enough
-* room in the FIFO to hold the specified bytes, XST_PFIFO_NO_ROOM is
-* returned.
-*
-* @note
-*
-* This function assumes that if the device inserting data into the FIFO is
-* a byte device, the order of the bytes in each 32 bit word is from the most
-* significant byte to the least significant byte.
-*
-******************************************************************************/
-XStatus
-XPacketFifoV100b_Write(XPacketFifoV100b * InstancePtr,
- u8 * BufferPtr, u32 ByteCount)
-{
- u32 FifoCount;
- u32 WordCount;
- u32 ExtraByteCount;
- u32 *WordBuffer = (u32 *) BufferPtr;
-
- /* assert to verify valid input arguments including 32 bit alignment of
- * the buffer pointer
- */
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(BufferPtr != NULL);
- XASSERT_NONVOID(((u32) BufferPtr &
- (XPF_FIFO_WIDTH_BYTE_COUNT - 1)) == 0);
- XASSERT_NONVOID(ByteCount != 0);
- XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
-
- /* get the count of how many words may be inserted into the FIFO */
-
- FifoCount = XIo_In32(InstancePtr->RegBaseAddress +
- XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
-
- /* Calculate the number of 32 bit words required to insert the specified
- * number of bytes in the FIFO and determine the number of extra bytes
- * if the buffer length is not a multiple of 32 bit words
- */
-
- WordCount = ByteCount / XPF_FIFO_WIDTH_BYTE_COUNT;
- ExtraByteCount = ByteCount % XPF_FIFO_WIDTH_BYTE_COUNT;
-
- /* take into account the extra bytes in the total word count */
-
- if (ExtraByteCount > 0) {
- WordCount++;
- }
-
- /* if there's not enough room in the FIFO to hold the specified
- * number of bytes, then indicate an error,
- */
- if (FifoCount < WordCount) {
- return XST_PFIFO_NO_ROOM;
- }
-
- /* readjust the word count to not take into account the extra bytes */
-
- if (ExtraByteCount > 0) {
- WordCount--;
- }
-
- /* Write all the bytes of the buffer which can be written as 32 bit
- * words into the FIFO, waiting to handle the extra bytes seperately
- */
- for (FifoCount = 0; FifoCount < WordCount; FifoCount++) {
- XIo_Out32(InstancePtr->DataBaseAddress, WordBuffer[FifoCount]);
- }
-
- /* if there are extra bytes to handle, extract them from the buffer
- * and create a 32 bit word and write it to the FIFO
- */
- if (ExtraByteCount > 0) {
- u32 LastWord = 0;
- u8 *ExtraBytesBuffer = (u8 *) (WordBuffer + WordCount);
-
- /* one extra byte in the buffer, put the byte into the last word
- * to be inserted into the FIFO, perform this processing inline rather
- * than in a loop to help performance
- */
- if (ExtraByteCount == 1) {
- LastWord = ExtraBytesBuffer[0] << 24;
- }
-
- /* two extra bytes in the buffer, put each byte into the last word
- * to be inserted into the FIFO
- */
- else if (ExtraByteCount == 2) {
- LastWord = ExtraBytesBuffer[0] << 24 |
- ExtraBytesBuffer[1] << 16;
- }
-
- /* three extra bytes in the buffer, put each byte into the last word
- * to be inserted into the FIFO
- */
- else if (ExtraByteCount == 3) {
- LastWord = ExtraBytesBuffer[0] << 24 |
- ExtraBytesBuffer[1] << 16 |
- ExtraBytesBuffer[2] << 8;
- }
-
- /* write the last 32 bit word to the FIFO and return with no errors */
-
- XIo_Out32(InstancePtr->DataBaseAddress, LastWord);
- }
-
- return XST_SUCCESS;
-}
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-******************************************************************************/
-/*****************************************************************************/
-/*
-*
-* @file xpacket_fifo_v1_00_b.h
-*
-* This component is a common component because it's primary purpose is to
-* prevent code duplication in drivers. A driver which must handle a packet
-* FIFO uses this component rather than directly manipulating a packet FIFO.
-*
-* A FIFO is a device which has dual port memory such that one user may be
-* inserting data into the FIFO while another is consuming data from the FIFO.
-* A packet FIFO is designed for use with packet protocols such as Ethernet and
-* ATM. It is typically only used with devices when DMA and/or Scatter Gather
-* is used. It differs from a nonpacket FIFO in that it does not provide any
-* interrupts for thresholds of the FIFO such that it is less useful without
-* DMA.
-*
-* @note
-*
-* This component has the capability to generate an interrupt when an error
-* condition occurs. It is the user's responsibility to provide the interrupt
-* processing to handle the interrupt. This component provides the ability to
-* determine if that interrupt is active, a deadlock condition, and the ability
-* to reset the FIFO to clear the condition. In this condition, the device which
-* is using the FIFO should also be reset to prevent other problems. This error
-* condition could occur as a normal part of operation if the size of the FIFO
-* is not setup correctly. See the hardware IP specification for more details.
-*
-* <pre>
-* MODIFICATION HISTORY:
-*
-* Ver Who Date Changes
-* ----- ---- -------- -----------------------------------------------
-* 1.00b rpm 03/26/02 First release
-* </pre>
-*
-*****************************************************************************/
-#ifndef XPACKET_FIFO_H /* prevent circular inclusions */
-#define XPACKET_FIFO_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-#include "xstatus.h"
-
-/************************** Constant Definitions *****************************/
-
-/*
- * These constants specify the FIFO type and are mutually exclusive
- */
-#define XPF_READ_FIFO_TYPE 0 /* a read FIFO */
-#define XPF_WRITE_FIFO_TYPE 1 /* a write FIFO */
-
-/*
- * These constants define the offsets to each of the registers from the
- * register base address, each of the constants are a number of bytes
- */
-#define XPF_RESET_REG_OFFSET 0UL
-#define XPF_MODULE_INFO_REG_OFFSET 0UL
-#define XPF_COUNT_STATUS_REG_OFFSET 4UL
-
-/*
- * This constant is used with the Reset Register
- */
-#define XPF_RESET_FIFO_MASK 0x0000000A
-
-/*
- * These constants are used with the Occupancy/Vacancy Count Register. This
- * register also contains FIFO status
- */
-#define XPF_COUNT_MASK 0x0000FFFF
-#define XPF_DEADLOCK_MASK 0x20000000
-#define XPF_ALMOST_EMPTY_FULL_MASK 0x40000000
-#define XPF_EMPTY_FULL_MASK 0x80000000
-
-/**************************** Type Definitions *******************************/
-
-/*
- * The XPacketFifo driver instance data. The driver is required to allocate a
- * variable of this type for every packet FIFO in the device.
- */
-typedef struct {
- u32 RegBaseAddress; /* Base address of registers */
- u32 IsReady; /* Device is initialized and ready */
- u32 DataBaseAddress; /* Base address of data for FIFOs */
-} XPacketFifoV100b;
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/*****************************************************************************/
-/*
-*
-* Reset the specified packet FIFO. Resetting a FIFO will cause any data
-* contained in the FIFO to be lost.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-*
-* @return
-*
-* None.
-*
-* @note
-*
-* Signature: void XPF_V100B_RESET(XPacketFifoV100b *InstancePtr)
-*
-******************************************************************************/
-#define XPF_V100B_RESET(InstancePtr) \
- XIo_Out32((InstancePtr)->RegBaseAddress + XPF_RESET_REG_OFFSET, XPF_RESET_FIFO_MASK);
-
-/*****************************************************************************/
-/*
-*
-* Get the occupancy count for a read packet FIFO and the vacancy count for a
-* write packet FIFO. These counts indicate the number of 32-bit words
-* contained (occupancy) in the FIFO or the number of 32-bit words available
-* to write (vacancy) in the FIFO.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-*
-* @return
-*
-* The occupancy or vacancy count for the specified packet FIFO.
-*
-* @note
-*
-* Signature: u32 XPF_V100B_GET_COUNT(XPacketFifoV100b *InstancePtr)
-*
-******************************************************************************/
-#define XPF_V100B_GET_COUNT(InstancePtr) \
- (XIo_In32((InstancePtr)->RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET) & \
- XPF_COUNT_MASK)
-
-/*****************************************************************************/
-/*
-*
-* Determine if the specified packet FIFO is almost empty. Almost empty is
-* defined for a read FIFO when there is only one data word in the FIFO.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-*
-* @return
-*
-* TRUE if the packet FIFO is almost empty, FALSE otherwise.
-*
-* @note
-*
-* Signature: u32 XPF_V100B_IS_ALMOST_EMPTY(XPacketFifoV100b *InstancePtr)
-*
-******************************************************************************/
-#define XPF_V100B_IS_ALMOST_EMPTY(InstancePtr) \
- (XIo_In32((InstancePtr)->RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET) & \
- XPF_ALMOST_EMPTY_FULL_MASK)
-
-/*****************************************************************************/
-/*
-*
-* Determine if the specified packet FIFO is almost full. Almost full is
-* defined for a write FIFO when there is only one available data word in the
-* FIFO.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-*
-* @return
-*
-* TRUE if the packet FIFO is almost full, FALSE otherwise.
-*
-* @note
-*
-* Signature: u32 XPF_V100B_IS_ALMOST_FULL(XPacketFifoV100b *InstancePtr)
-*
-******************************************************************************/
-#define XPF_V100B_IS_ALMOST_FULL(InstancePtr) \
- (XIo_In32((InstancePtr)->RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET) & \
- XPF_ALMOST_EMPTY_FULL_MASK)
-
-/*****************************************************************************/
-/*
-*
-* Determine if the specified packet FIFO is empty. This applies only to a
-* read FIFO.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-*
-* @return
-*
-* TRUE if the packet FIFO is empty, FALSE otherwise.
-*
-* @note
-*
-* Signature: u32 XPF_V100B_IS_EMPTY(XPacketFifoV100b *InstancePtr)
-*
-******************************************************************************/
-#define XPF_V100B_IS_EMPTY(InstancePtr) \
- (XIo_In32((InstancePtr)->RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET) & \
- XPF_EMPTY_FULL_MASK)
-
-/*****************************************************************************/
-/*
-*
-* Determine if the specified packet FIFO is full. This applies only to a
-* write FIFO.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-*
-* @return
-*
-* TRUE if the packet FIFO is full, FALSE otherwise.
-*
-* @note
-*
-* Signature: u32 XPF_V100B_IS_FULL(XPacketFifoV100b *InstancePtr)
-*
-******************************************************************************/
-#define XPF_V100B_IS_FULL(InstancePtr) \
- (XIo_In32((InstancePtr)->RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET) & \
- XPF_EMPTY_FULL_MASK)
-
-/*****************************************************************************/
-/*
-*
-* Determine if the specified packet FIFO is deadlocked. This condition occurs
-* when the FIFO is full and empty at the same time and is caused by a packet
-* being written to the FIFO which exceeds the total data capacity of the FIFO.
-* It occurs because of the mark/restore features of the packet FIFO which allow
-* retransmission of a packet. The software should reset the FIFO and any devices
-* using the FIFO when this condition occurs.
-*
-* @param InstancePtr contains a pointer to the FIFO to operate on.
-*
-* @return
-*
-* TRUE if the packet FIFO is deadlocked, FALSE otherwise.
-*
-* @note
-*
-* This component has the capability to generate an interrupt when an error
-* condition occurs. It is the user's responsibility to provide the interrupt
-* processing to handle the interrupt. This function provides the ability to
-* determine if a deadlock condition, and the ability to reset the FIFO to
-* clear the condition.
-*
-* In this condition, the device which is using the FIFO should also be reset
-* to prevent other problems. This error condition could occur as a normal part
-* of operation if the size of the FIFO is not setup correctly.
-*
-* Signature: u32 XPF_V100B_IS_DEADLOCKED(XPacketFifoV100b *InstancePtr)
-*
-******************************************************************************/
-#define XPF_V100B_IS_DEADLOCKED(InstancePtr) \
- (XIo_In32((InstancePtr)->RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET) & \
- XPF_DEADLOCK_MASK)
-
-/************************** Function Prototypes ******************************/
-
-/* Standard functions */
-
-XStatus XPacketFifoV100b_Initialize(XPacketFifoV100b * InstancePtr,
- u32 RegBaseAddress, u32 DataBaseAddress);
-XStatus XPacketFifoV100b_SelfTest(XPacketFifoV100b * InstancePtr, u32 FifoType);
-
-/* Data functions */
-
-XStatus XPacketFifoV100b_Read(XPacketFifoV100b * InstancePtr,
- u8 * ReadBufferPtr, u32 ByteCount);
-XStatus XPacketFifoV100b_Write(XPacketFifoV100b * InstancePtr,
- u8 * WriteBufferPtr, u32 ByteCount);
-
-#endif /* end of protection macro */
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-******************************************************************************/
-/*****************************************************************************/
-/**
-*
-* @file xstatus.h
-*
-* This file contains Xilinx software status codes. Status codes have their
-* own data type called XStatus. These codes are used throughout the Xilinx
-* device drivers.
-*
-******************************************************************************/
-
-#ifndef XSTATUS_H /* prevent circular inclusions */
-#define XSTATUS_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-
-/************************** Constant Definitions *****************************/
-
-/*********************** Common statuses 0 - 500 *****************************/
-
-#define XST_SUCCESS 0L
-#define XST_FAILURE 1L
-#define XST_DEVICE_NOT_FOUND 2L
-#define XST_DEVICE_BLOCK_NOT_FOUND 3L
-#define XST_INVALID_VERSION 4L
-#define XST_DEVICE_IS_STARTED 5L
-#define XST_DEVICE_IS_STOPPED 6L
-#define XST_FIFO_ERROR 7L /* an error occurred during an
- operation with a FIFO such as
- an underrun or overrun, this
- error requires the device to
- be reset */
-#define XST_RESET_ERROR 8L /* an error occurred which requires
- the device to be reset */
-#define XST_DMA_ERROR 9L /* a DMA error occurred, this error
- typically requires the device
- using the DMA to be reset */
-#define XST_NOT_POLLED 10L /* the device is not configured for
- polled mode operation */
-#define XST_FIFO_NO_ROOM 11L /* a FIFO did not have room to put
- the specified data into */
-#define XST_BUFFER_TOO_SMALL 12L /* the buffer is not large enough
- to hold the expected data */
-#define XST_NO_DATA 13L /* there was no data available */
-#define XST_REGISTER_ERROR 14L /* a register did not contain the
- expected value */
-#define XST_INVALID_PARAM 15L /* an invalid parameter was passed
- into the function */
-#define XST_NOT_SGDMA 16L /* the device is not configured for
- scatter-gather DMA operation */
-#define XST_LOOPBACK_ERROR 17L /* a loopback test failed */
-#define XST_NO_CALLBACK 18L /* a callback has not yet been
- * registered */
-#define XST_NO_FEATURE 19L /* device is not configured with
- * the requested feature */
-#define XST_NOT_INTERRUPT 20L /* device is not configured for
- * interrupt mode operation */
-#define XST_DEVICE_BUSY 21L /* device is busy */
-#define XST_ERROR_COUNT_MAX 22L /* the error counters of a device
- * have maxed out */
-#define XST_IS_STARTED 23L /* used when part of device is
- * already started i.e.
- * sub channel */
-#define XST_IS_STOPPED 24L /* used when part of device is
- * already stopped i.e.
- * sub channel */
-
-/***************** Utility Component statuses 401 - 500 *********************/
-
-#define XST_MEMTEST_FAILED 401L /* memory test failed */
-
-/***************** Common Components statuses 501 - 1000 *********************/
-
-/********************* Packet Fifo statuses 501 - 510 ************************/
-
-#define XST_PFIFO_LACK_OF_DATA 501L /* not enough data in FIFO */
-#define XST_PFIFO_NO_ROOM 502L /* not enough room in FIFO */
-#define XST_PFIFO_BAD_REG_VALUE 503L /* self test, a register value
- was invalid after reset */
-
-/************************** DMA statuses 511 - 530 ***************************/
-
-#define XST_DMA_TRANSFER_ERROR 511L /* self test, DMA transfer
- failed */
-#define XST_DMA_RESET_REGISTER_ERROR 512L /* self test, a register value
- was invalid after reset */
-#define XST_DMA_SG_LIST_EMPTY 513L /* scatter gather list contains
- no buffer descriptors ready
- to be processed */
-#define XST_DMA_SG_IS_STARTED 514L /* scatter gather not stopped */
-#define XST_DMA_SG_IS_STOPPED 515L /* scatter gather not running */
-#define XST_DMA_SG_LIST_FULL 517L /* all the buffer desciptors of
- the scatter gather list are
- being used */
-#define XST_DMA_SG_BD_LOCKED 518L /* the scatter gather buffer
- descriptor which is to be
- copied over in the scatter
- list is locked */
-#define XST_DMA_SG_NOTHING_TO_COMMIT 519L /* no buffer descriptors have been
- put into the scatter gather
- list to be commited */
-#define XST_DMA_SG_COUNT_EXCEEDED 521L /* the packet count threshold
- specified was larger than the
- total # of buffer descriptors
- in the scatter gather list */
-#define XST_DMA_SG_LIST_EXISTS 522L /* the scatter gather list has
- already been created */
-#define XST_DMA_SG_NO_LIST 523L /* no scatter gather list has
- been created */
-#define XST_DMA_SG_BD_NOT_COMMITTED 524L /* the buffer descriptor which was
- being started was not committed
- to the list */
-#define XST_DMA_SG_NO_DATA 525L /* the buffer descriptor to start
- has already been used by the
- hardware so it can't be reused
- */
-
-/************************** IPIF statuses 531 - 550 ***************************/
-
-#define XST_IPIF_REG_WIDTH_ERROR 531L /* an invalid register width
- was passed into the function */
-#define XST_IPIF_RESET_REGISTER_ERROR 532L /* the value of a register at
- reset was not valid */
-#define XST_IPIF_DEVICE_STATUS_ERROR 533L /* a write to the device interrupt
- status register did not read
- back correctly */
-#define XST_IPIF_DEVICE_ACK_ERROR 534L /* the device interrupt status
- register did not reset when
- acked */
-#define XST_IPIF_DEVICE_ENABLE_ERROR 535L /* the device interrupt enable
- register was not updated when
- other registers changed */
-#define XST_IPIF_IP_STATUS_ERROR 536L /* a write to the IP interrupt
- status register did not read
- back correctly */
-#define XST_IPIF_IP_ACK_ERROR 537L /* the IP interrupt status register
- did not reset when acked */
-#define XST_IPIF_IP_ENABLE_ERROR 538L /* IP interrupt enable register was
- not updated correctly when other
- registers changed */
-#define XST_IPIF_DEVICE_PENDING_ERROR 539L /* The device interrupt pending
- register did not indicate the
- expected value */
-#define XST_IPIF_DEVICE_ID_ERROR 540L /* The device interrupt ID register
- did not indicate the expected
- value */
-
-/****************** Device specific statuses 1001 - 4095 *********************/
-
-/********************* Ethernet statuses 1001 - 1050 *************************/
-
-#define XST_EMAC_MEMORY_SIZE_ERROR 1001L /* Memory space is not big enough
- * to hold the minimum number of
- * buffers or descriptors */
-#define XST_EMAC_MEMORY_ALLOC_ERROR 1002L /* Memory allocation failed */
-#define XST_EMAC_MII_READ_ERROR 1003L /* MII read error */
-#define XST_EMAC_MII_BUSY 1004L /* An MII operation is in progress */
-#define XST_EMAC_OUT_OF_BUFFERS 1005L /* Adapter is out of buffers */
-#define XST_EMAC_PARSE_ERROR 1006L /* Invalid adapter init string */
-#define XST_EMAC_COLLISION_ERROR 1007L /* Excess deferral or late
- * collision on polled send */
-
-/*********************** UART statuses 1051 - 1075 ***************************/
-#define XST_UART
-
-#define XST_UART_INIT_ERROR 1051L
-#define XST_UART_START_ERROR 1052L
-#define XST_UART_CONFIG_ERROR 1053L
-#define XST_UART_TEST_FAIL 1054L
-#define XST_UART_BAUD_ERROR 1055L
-#define XST_UART_BAUD_RANGE 1056L
-
-/************************ IIC statuses 1076 - 1100 ***************************/
-
-#define XST_IIC_SELFTEST_FAILED 1076 /* self test failed */
-#define XST_IIC_BUS_BUSY 1077 /* bus found busy */
-#define XST_IIC_GENERAL_CALL_ADDRESS 1078 /* mastersend attempted with */
- /* general call address */
-#define XST_IIC_STAND_REG_RESET_ERROR 1079 /* A non parameterizable reg */
- /* value after reset not valid */
-#define XST_IIC_TX_FIFO_REG_RESET_ERROR 1080 /* Tx fifo included in design */
- /* value after reset not valid */
-#define XST_IIC_RX_FIFO_REG_RESET_ERROR 1081 /* Rx fifo included in design */
- /* value after reset not valid */
-#define XST_IIC_TBA_REG_RESET_ERROR 1082 /* 10 bit addr incl in design */
- /* value after reset not valid */
-#define XST_IIC_CR_READBACK_ERROR 1083 /* Read of the control register */
- /* didn't return value written */
-#define XST_IIC_DTR_READBACK_ERROR 1084 /* Read of the data Tx reg */
- /* didn't return value written */
-#define XST_IIC_DRR_READBACK_ERROR 1085 /* Read of the data Receive reg */
- /* didn't return value written */
-#define XST_IIC_ADR_READBACK_ERROR 1086 /* Read of the data Tx reg */
- /* didn't return value written */
-#define XST_IIC_TBA_READBACK_ERROR 1087 /* Read of the 10 bit addr reg */
- /* didn't return written value */
-#define XST_IIC_NOT_SLAVE 1088 /* The device isn't a slave */
-
-/*********************** ATMC statuses 1101 - 1125 ***************************/
-
-#define XST_ATMC_ERROR_COUNT_MAX 1101L /* the error counters in the ATM
- controller hit the max value
- which requires the statistics
- to be cleared */
-
-/*********************** Flash statuses 1126 - 1150 **************************/
-
-#define XST_FLASH_BUSY 1126L /* Flash is erasing or programming */
-#define XST_FLASH_READY 1127L /* Flash is ready for commands */
-#define XST_FLASH_ERROR 1128L /* Flash had detected an internal
- error. Use XFlash_DeviceControl
- to retrieve device specific codes */
-#define XST_FLASH_ERASE_SUSPENDED 1129L /* Flash is in suspended erase state */
-#define XST_FLASH_WRITE_SUSPENDED 1130L /* Flash is in suspended write state */
-#define XST_FLASH_PART_NOT_SUPPORTED 1131L /* Flash type not supported by
- driver */
-#define XST_FLASH_NOT_SUPPORTED 1132L /* Operation not supported */
-#define XST_FLASH_TOO_MANY_REGIONS 1133L /* Too many erase regions */
-#define XST_FLASH_TIMEOUT_ERROR 1134L /* Programming or erase operation
- aborted due to a timeout */
-#define XST_FLASH_ADDRESS_ERROR 1135L /* Accessed flash outside its
- addressible range */
-#define XST_FLASH_ALIGNMENT_ERROR 1136L /* Write alignment error */
-#define XST_FLASH_BLOCKING_CALL_ERROR 1137L /* Couldn't return immediately from
- write/erase function with
- XFL_NON_BLOCKING_WRITE/ERASE
- option cleared */
-#define XST_FLASH_CFI_QUERY_ERROR 1138L /* Failed to query the device */
-
-/*********************** SPI statuses 1151 - 1175 ****************************/
-
-#define XST_SPI_MODE_FAULT 1151 /* master was selected as slave */
-#define XST_SPI_TRANSFER_DONE 1152 /* data transfer is complete */
-#define XST_SPI_TRANSMIT_UNDERRUN 1153 /* slave underruns transmit register */
-#define XST_SPI_RECEIVE_OVERRUN 1154 /* device overruns receive register */
-#define XST_SPI_NO_SLAVE 1155 /* no slave has been selected yet */
-#define XST_SPI_TOO_MANY_SLAVES 1156 /* more than one slave is being
- * selected */
-#define XST_SPI_NOT_MASTER 1157 /* operation is valid only as master */
-#define XST_SPI_SLAVE_ONLY 1158 /* device is configured as slave-only */
-#define XST_SPI_SLAVE_MODE_FAULT 1159 /* slave was selected while disabled */
-
-/********************** OPB Arbiter statuses 1176 - 1200 *********************/
-
-#define XST_OPBARB_INVALID_PRIORITY 1176 /* the priority registers have either
- * one master assigned to two or more
- * priorities, or one master not
- * assigned to any priority
- */
-#define XST_OPBARB_NOT_SUSPENDED 1177 /* an attempt was made to modify the
- * priority levels without first
- * suspending the use of priority
- * levels
- */
-#define XST_OPBARB_PARK_NOT_ENABLED 1178 /* bus parking by id was enabled but
- * bus parking was not enabled
- */
-#define XST_OPBARB_NOT_FIXED_PRIORITY 1179 /* the arbiter must be in fixed
- * priority mode to allow the
- * priorities to be changed
- */
-
-/************************ Intc statuses 1201 - 1225 **************************/
-
-#define XST_INTC_FAIL_SELFTEST 1201 /* self test failed */
-#define XST_INTC_CONNECT_ERROR 1202 /* interrupt already in use */
-
-/********************** TmrCtr statuses 1226 - 1250 **************************/
-
-#define XST_TMRCTR_TIMER_FAILED 1226 /* self test failed */
-
-/********************** WdtTb statuses 1251 - 1275 ***************************/
-
-#define XST_WDTTB_TIMER_FAILED 1251L
-
-/********************** PlbArb statuses 1276 - 1300 **************************/
-
-#define XST_PLBARB_FAIL_SELFTEST 1276L
-
-/********************** Plb2Opb statuses 1301 - 1325 *************************/
-
-#define XST_PLB2OPB_FAIL_SELFTEST 1301L
-
-/********************** Opb2Plb statuses 1326 - 1350 *************************/
-
-#define XST_OPB2PLB_FAIL_SELFTEST 1326L
-
-/********************** SysAce statuses 1351 - 1360 **************************/
-
-#define XST_SYSACE_NO_LOCK 1351L /* No MPU lock has been granted */
-
-/********************** PCI Bridge statuses 1361 - 1375 **********************/
-
-#define XST_PCI_INVALID_ADDRESS 1361L
-
-/**************************** Type Definitions *******************************/
-
-/**
- * The status typedef.
- */
-typedef u32 XStatus;
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-
-#endif /* end of protection macro */
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-******************************************************************************/
-/*****************************************************************************
-*
-* This file contains the implementation of the XVersion component. This
-* component represents a version ID. It is encapsulated within a component
-* so that it's type and implementation can change without affecting users of
-* it.
-*
-* The version is formatted as X.YYZ where X = 0 - 9, Y = 00 - 99, Z = a - z
-* X is the major revision, YY is the minor revision, and Z is the
-* compatability revision.
-*
-* Packed versions are also utilized for the configuration ROM such that
-* memory is minimized. A packed version consumes only 16 bits and is
-* formatted as follows.
-*
-* <pre>
-* Revision Range Bit Positions
-*
-* Major Revision 0 - 9 Bits 15 - 12
-* Minor Revision 0 - 99 Bits 11 - 5
-* Compatability Revision a - z Bits 4 - 0
-</pre>
-*
-******************************************************************************/
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-#include "xversion.h"
-
-/************************** Constant Definitions *****************************/
-
-/* the following constants define the masks and shift values to allow the
- * revisions to be packed and unpacked, a packed version is packed into a 16
- * bit value in the following format, XXXXYYYYYYYZZZZZ, where XXXX is the
- * major revision, YYYYYYY is the minor revision, and ZZZZZ is the compatability
- * revision
- */
-#define XVE_MAJOR_SHIFT_VALUE 12
-#define XVE_MINOR_ONLY_MASK 0x0FE0
-#define XVE_MINOR_SHIFT_VALUE 5
-#define XVE_COMP_ONLY_MASK 0x001F
-
-/* the following constants define the specific characters of a version string
- * for each character of the revision, a version string is in the following
- * format, "X.YYZ" where X is the major revision (0 - 9), YY is the minor
- * revision (00 - 99), and Z is the compatability revision (a - z)
- */
-#define XVE_MAJOR_CHAR 0 /* major revision 0 - 9 */
-#define XVE_MINOR_TENS_CHAR 2 /* minor revision tens 0 - 9 */
-#define XVE_MINOR_ONES_CHAR 3 /* minor revision ones 0 - 9 */
-#define XVE_COMP_CHAR 4 /* compatability revision a - z */
-#define XVE_END_STRING_CHAR 5
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-
-static u32 IsVersionStringValid(s8 * StringPtr);
-
-/*****************************************************************************
-*
-* Unpacks a packed version into the specified version. Versions are packed
-* into the configuration ROM to reduce the amount storage. A packed version
-* is a binary format as oppossed to a non-packed version which is implemented
-* as a string.
-*
-* @param InstancePtr points to the version to unpack the packed version into.
-* @param PackedVersion contains the packed version to unpack.
-*
-* @return
-*
-* None.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-void
-XVersion_UnPack(XVersion * InstancePtr, u16 PackedVersion)
-{
- /* not implemented yet since CROM related */
-}
-
-/*****************************************************************************
-*
-* Packs a version into the specified packed version. Versions are packed into
-* the configuration ROM to reduce the amount storage.
-*
-* @param InstancePtr points to the version to pack.
-* @param PackedVersionPtr points to the packed version which will receive
-* the new packed version.
-*
-* @return
-*
-* A status, XST_SUCCESS, indicating the packing was accomplished
-* successfully, or an error, XST_INVALID_VERSION, indicating the specified
-* input version was not valid such that the pack did not occur
-* <br><br>
-* The packed version pointed to by PackedVersionPtr is modified with the new
-* packed version if the status indicates success.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XVersion_Pack(XVersion * InstancePtr, u16 * PackedVersionPtr)
-{
- /* not implemented yet since CROM related */
-
- return XST_SUCCESS;
-}
-
-/*****************************************************************************
-*
-* Determines if two versions are equal.
-*
-* @param InstancePtr points to the first version to be compared.
-* @param VersionPtr points to a second version to be compared.
-*
-* @return
-*
-* TRUE if the versions are equal, FALSE otherwise.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-u32
-XVersion_IsEqual(XVersion * InstancePtr, XVersion * VersionPtr)
-{
- u8 *Version1 = (u8 *) InstancePtr;
- u8 *Version2 = (u8 *) VersionPtr;
- int Index;
-
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(VersionPtr != NULL);
-
- /* check each byte of the versions to see if they are the same,
- * return at any point a byte differs between them
- */
- for (Index = 0; Index < sizeof (XVersion); Index++) {
- if (Version1[Index] != Version2[Index]) {
- return FALSE;
- }
- }
-
- /* No byte was found to be different between the versions, so indicate
- * the versions are equal
- */
- return TRUE;
-}
-
-/*****************************************************************************
-*
-* Converts a version to a null terminated string.
-*
-* @param InstancePtr points to the version to convert.
-* @param StringPtr points to the string which will be the result of the
-* conversion. This does not need to point to a null terminated
-* string as an input, but must point to storage which is an adequate
-* amount to hold the result string.
-*
-* @return
-*
-* The null terminated string is inserted at the location pointed to by
-* StringPtr if the status indicates success.
-*
-* @note
-*
-* It is necessary for the caller to have already allocated the storage to
-* contain the string. The amount of memory necessary for the string is
-* specified in the version header file.
-*
-******************************************************************************/
-void
-XVersion_ToString(XVersion * InstancePtr, s8 * StringPtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(StringPtr != NULL);
-
- /* since version is implemented as a string, just copy the specified
- * input into the specified output
- */
- XVersion_Copy(InstancePtr, (XVersion *) StringPtr);
-}
-
-/*****************************************************************************
-*
-* Initializes a version from a null terminated string. Since the string may not
-* be a format which is compatible with the version, an error could occur.
-*
-* @param InstancePtr points to the version which is to be initialized.
-* @param StringPtr points to a null terminated string which will be
-* converted to a version. The format of the string must match the
-* version string format which is X.YYX where X = 0 - 9, YY = 00 - 99,
-* Z = a - z.
-*
-* @return
-*
-* A status, XST_SUCCESS, indicating the conversion was accomplished
-* successfully, or XST_INVALID_VERSION indicating the version string format
-* was not valid.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-XStatus
-XVersion_FromString(XVersion * InstancePtr, s8 * StringPtr)
-{
- /* assert to verify input arguments */
-
- XASSERT_NONVOID(InstancePtr != NULL);
- XASSERT_NONVOID(StringPtr != NULL);
-
- /* if the version string specified is not valid, return an error */
-
- if (!IsVersionStringValid(StringPtr)) {
- return XST_INVALID_VERSION;
- }
-
- /* copy the specified string into the specified version and indicate the
- * conversion was successful
- */
- XVersion_Copy((XVersion *) StringPtr, InstancePtr);
-
- return XST_SUCCESS;
-}
-
-/*****************************************************************************
-*
-* Copies the contents of a version to another version.
-*
-* @param InstancePtr points to the version which is the source of data for
-* the copy operation.
-* @param VersionPtr points to another version which is the destination of
-* the copy operation.
-*
-* @return
-*
-* None.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-void
-XVersion_Copy(XVersion * InstancePtr, XVersion * VersionPtr)
-{
- u8 *Source = (u8 *) InstancePtr;
- u8 *Destination = (u8 *) VersionPtr;
- int Index;
-
- /* assert to verify input arguments */
-
- XASSERT_VOID(InstancePtr != NULL);
- XASSERT_VOID(VersionPtr != NULL);
-
- /* copy each byte of the source version to the destination version */
-
- for (Index = 0; Index < sizeof (XVersion); Index++) {
- Destination[Index] = Source[Index];
- }
-}
-
-/*****************************************************************************
-*
-* Determines if the specified version is valid.
-*
-* @param StringPtr points to the string to be validated.
-*
-* @return
-*
-* TRUE if the version string is a valid format, FALSE otherwise.
-*
-* @note
-*
-* None.
-*
-******************************************************************************/
-static u32
-IsVersionStringValid(s8 * StringPtr)
-{
- /* if the input string is not a valid format, "X.YYZ" where X = 0 - 9,
- * YY = 00 - 99, and Z = a - z, then indicate it's not valid
- */
- if ((StringPtr[XVE_MAJOR_CHAR] < '0') ||
- (StringPtr[XVE_MAJOR_CHAR] > '9') ||
- (StringPtr[XVE_MINOR_TENS_CHAR] < '0') ||
- (StringPtr[XVE_MINOR_TENS_CHAR] > '9') ||
- (StringPtr[XVE_MINOR_ONES_CHAR] < '0') ||
- (StringPtr[XVE_MINOR_ONES_CHAR] > '9') ||
- (StringPtr[XVE_COMP_CHAR] < 'a') ||
- (StringPtr[XVE_COMP_CHAR] > 'z')) {
- return FALSE;
- }
-
- return TRUE;
-}
+++ /dev/null
-/******************************************************************************
-*
-* Author: Xilinx, Inc.
-*
-*
-* This program is free software; you can redistribute it and/or modify it
-* under the terms of the GNU General Public License as published by the
-* Free Software Foundation; either version 2 of the License, or (at your
-* option) any later version.
-*
-*
-* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
-* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
-* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
-* XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
-* FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
-* ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
-* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
-* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
-* WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
-* CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
-* FITNESS FOR A PARTICULAR PURPOSE.
-*
-*
-* Xilinx hardware products are not intended for use in life support
-* appliances, devices, or systems. Use in such applications is
-* expressly prohibited.
-*
-*
-* (c) Copyright 2002-2004 Xilinx Inc.
-* All rights reserved.
-*
-*
-* You should have received a copy of the GNU General Public License along
-* with this program; if not, write to the Free Software Foundation, Inc.,
-* 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-******************************************************************************/
-/*****************************************************************************
-*
-* This file contains the interface for the XVersion component. This
-* component represents a version ID. It is encapsulated within a component
-* so that it's type and implementation can change without affecting users of
-* it.
-*
-* The version is formatted as X.YYZ where X = 0 - 9, Y = 00 - 99, Z = a - z
-* X is the major revision, YY is the minor revision, and Z is the
-* compatability revision.
-*
-* Packed versions are also utilized for the configuration ROM such that
-* memory is minimized. A packed version consumes only 16 bits and is
-* formatted as follows.
-*
-* <pre>
-* Revision Range Bit Positions
-*
-* Major Revision 0 - 9 Bits 15 - 12
-* Minor Revision 0 - 99 Bits 11 - 5
-* Compatability Revision a - z Bits 4 - 0
-* </pre>
-*
-******************************************************************************/
-
-#ifndef XVERSION_H /* prevent circular inclusions */
-#define XVERSION_H /* by using protection macros */
-
-/***************************** Include Files *********************************/
-
-#include "xbasic_types.h"
-#include "xstatus.h"
-
-/************************** Constant Definitions *****************************/
-
-/**************************** Type Definitions *******************************/
-
-/* the following data type is used to hold a null terminated version string
- * consisting of the following format, "X.YYX"
- */
-typedef s8 XVersion[6];
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Function Prototypes ******************************/
-
-void XVersion_UnPack(XVersion * InstancePtr, u16 PackedVersion);
-
-XStatus XVersion_Pack(XVersion * InstancePtr, u16 * PackedVersion);
-
-u32 XVersion_IsEqual(XVersion * InstancePtr, XVersion * VersionPtr);
-
-void XVersion_ToString(XVersion * InstancePtr, s8 * StringPtr);
-
-XStatus XVersion_FromString(XVersion * InstancePtr, s8 * StringPtr);
-
-void XVersion_Copy(XVersion * InstancePtr, XVersion * VersionPtr);
-
-#endif /* end of protection macro */
#
include $(TOPDIR)/config.mk
-ifneq ($(OBJTREE),$(SRCTREE))
-$(shell mkdir -p $(obj)../common)
-endif
LIB = $(obj)lib$(BOARD).o
projects / oweals / u-boot.git / commitdiff