diff options
Diffstat (limited to 'board/xilinx')
| -rw-r--r-- | board/xilinx/common/xbasic_types.c | 165 | ||||
| -rw-r--r-- | board/xilinx/common/xbasic_types.h | 283 | ||||
| -rw-r--r-- | board/xilinx/common/xbuf_descriptor.h | 252 | ||||
| -rw-r--r-- | board/xilinx/common/xdma_channel.c | 738 | ||||
| -rw-r--r-- | board/xilinx/common/xdma_channel.h | 291 | ||||
| -rw-r--r-- | board/xilinx/common/xdma_channel_i.h | 110 | ||||
| -rw-r--r-- | board/xilinx/common/xdma_channel_sg.c | 1317 | ||||
| -rw-r--r-- | board/xilinx/common/xio.h | 81 | ||||
| -rw-r--r-- | board/xilinx/common/xipif_v1_23_b.c | 331 | ||||
| -rw-r--r-- | board/xilinx/common/xipif_v1_23_b.h | 746 | ||||
| -rw-r--r-- | board/xilinx/common/xpacket_fifo_v1_00_b.c | 448 | ||||
| -rw-r--r-- | board/xilinx/common/xpacket_fifo_v1_00_b.h | 306 | ||||
| -rw-r--r-- | board/xilinx/common/xstatus.h | 347 | ||||
| -rw-r--r-- | board/xilinx/common/xversion.c | 350 | ||||
| -rw-r--r-- | board/xilinx/common/xversion.h | 97 | ||||
| -rw-r--r-- | board/xilinx/microblaze-generic/microblaze-generic.c | 20 | ||||
| -rw-r--r-- | board/xilinx/xilinx_iic/xiic_l.c | 484 | ||||
| -rw-r--r-- | board/xilinx/xilinx_iic/xiic_l.h | 150 | ||||
| -rw-r--r-- | board/xilinx/zynq/Makefile | 3 |
19 files changed, 0 insertions, 6519 deletions
diff --git a/board/xilinx/common/xbasic_types.c b/board/xilinx/common/xbasic_types.c deleted file mode 100644 index c3a171a..0000000 --- a/board/xilinx/common/xbasic_types.c +++ /dev/null @@ -1,165 +0,0 @@ -/****************************************************************************** -* -* 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) -{ -} diff --git a/board/xilinx/common/xbasic_types.h b/board/xilinx/common/xbasic_types.h deleted file mode 100644 index ef0b7c2..0000000 --- a/board/xilinx/common/xbasic_types.h +++ /dev/null @@ -1,283 +0,0 @@ -/****************************************************************************** -* -* 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 */ diff --git a/board/xilinx/common/xbuf_descriptor.h b/board/xilinx/common/xbuf_descriptor.h deleted file mode 100644 index fdd51d5..0000000 --- a/board/xilinx/common/xbuf_descriptor.h +++ /dev/null @@ -1,252 +0,0 @@ -/****************************************************************************** -* -* 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 */ diff --git a/board/xilinx/common/xdma_channel.c b/board/xilinx/common/xdma_channel.c deleted file mode 100644 index f816138..0000000 --- a/board/xilinx/common/xdma_channel.c +++ /dev/null @@ -1,738 +0,0 @@ -/****************************************************************************** -* -* 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); -} diff --git a/board/xilinx/common/xdma_channel.h b/board/xilinx/common/xdma_channel.h deleted file mode 100644 index 4685982..0000000 --- a/board/xilinx/common/xdma_channel.h +++ /dev/null @@ -1,291 +0,0 @@ -/****************************************************************************** -* -* 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 */ diff --git a/board/xilinx/common/xdma_channel_i.h b/board/xilinx/common/xdma_channel_i.h deleted file mode 100644 index e9f343b..0000000 --- a/board/xilinx/common/xdma_channel_i.h +++ /dev/null @@ -1,110 +0,0 @@ -/****************************************************************************** -* -* 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 */ diff --git a/board/xilinx/common/xdma_channel_sg.c b/board/xilinx/common/xdma_channel_sg.c deleted file mode 100644 index a8e9462..0000000 --- a/board/xilinx/common/xdma_channel_sg.c +++ /dev/null @@ -1,1317 +0,0 @@ -/* $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); -} diff --git a/board/xilinx/common/xio.h b/board/xilinx/common/xio.h deleted file mode 100644 index 5bb09c8..0000000 --- a/board/xilinx/common/xio.h +++ /dev/null @@ -1,81 +0,0 @@ -/* - * 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 */ diff --git a/board/xilinx/common/xipif_v1_23_b.c b/board/xilinx/common/xipif_v1_23_b.c deleted file mode 100644 index c7311ab..0000000 --- a/board/xilinx/common/xipif_v1_23_b.c +++ /dev/null @@ -1,331 +0,0 @@ -/* $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; -} diff --git a/board/xilinx/common/xipif_v1_23_b.h b/board/xilinx/common/xipif_v1_23_b.h deleted file mode 100644 index 3ce1fff..0000000 --- a/board/xilinx/common/xipif_v1_23_b.h +++ /dev/null @@ -1,746 +0,0 @@ -/* $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 */ diff --git a/board/xilinx/common/xpacket_fifo_v1_00_b.c b/board/xilinx/common/xpacket_fifo_v1_00_b.c deleted file mode 100644 index ae2d6d4..0000000 --- a/board/xilinx/common/xpacket_fifo_v1_00_b.c +++ /dev/null @@ -1,448 +0,0 @@ -/****************************************************************************** -* -* 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; -} diff --git a/board/xilinx/common/xpacket_fifo_v1_00_b.h b/board/xilinx/common/xpacket_fifo_v1_00_b.h deleted file mode 100644 index 1cda0e8..0000000 --- a/board/xilinx/common/xpacket_fifo_v1_00_b.h +++ /dev/null @@ -1,306 +0,0 @@ -/****************************************************************************** -* -* 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 */ diff --git a/board/xilinx/common/xstatus.h b/board/xilinx/common/xstatus.h deleted file mode 100644 index ffda4d7..0000000 --- a/board/xilinx/common/xstatus.h +++ /dev/null @@ -1,347 +0,0 @@ -/****************************************************************************** -* -* 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 */ diff --git a/board/xilinx/common/xversion.c b/board/xilinx/common/xversion.c deleted file mode 100644 index c8a6915..0000000 --- a/board/xilinx/common/xversion.c +++ /dev/null @@ -1,350 +0,0 @@ -/****************************************************************************** -* -* 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; -} diff --git a/board/xilinx/common/xversion.h b/board/xilinx/common/xversion.h deleted file mode 100644 index 17f9da7..0000000 --- a/board/xilinx/common/xversion.h +++ /dev/null @@ -1,97 +0,0 @@ -/****************************************************************************** -* -* 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 */ diff --git a/board/xilinx/microblaze-generic/microblaze-generic.c b/board/xilinx/microblaze-generic/microblaze-generic.c index b75e62c..70f94c1 100644 --- a/board/xilinx/microblaze-generic/microblaze-generic.c +++ b/board/xilinx/microblaze-generic/microblaze-generic.c @@ -53,29 +53,9 @@ int gpio_init (void) return 0; } -#ifdef CONFIG_SYS_FSL_2 -void fsl_isr2 (void *arg) { - volatile int num; - *((unsigned int *)(CONFIG_SYS_GPIO_0_ADDR + 0x4)) = - ++(*((unsigned int *)(CONFIG_SYS_GPIO_0_ADDR + 0x4))); - GET (num, 2); - NGET (num, 2); - puts("*"); -} - -int fsl_init2 (void) { - puts("fsl_init2\n"); - install_interrupt_handler (FSL_INTR_2, fsl_isr2, NULL); - return 0; -} -#endif - void board_init(void) { gpio_init(); -#ifdef CONFIG_SYS_FSL_2 - fsl_init2(); -#endif } int board_eth_init(bd_t *bis) diff --git a/board/xilinx/xilinx_iic/xiic_l.c b/board/xilinx/xilinx_iic/xiic_l.c deleted file mode 100644 index 6b78163..0000000 --- a/board/xilinx/xilinx_iic/xiic_l.c +++ /dev/null @@ -1,484 +0,0 @@ -/* $Id: xiic_l.c,v 1.2 2002/12/05 19:32:40 meinelte 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. -* -******************************************************************************/ -/*****************************************************************************/ -/** -* -* @file xiic_l.c -* -* This file contains low-level driver functions that can be used to access the -* device. The user should refer to the hardware device specification for more -* details of the device operation. -* -* <pre> -* MODIFICATION HISTORY: -* -* Ver Who Date Changes -* ----- --- ------- ----------------------------------------------- -* 1.01b jhl 5/13/02 First release -* 1.01b jhl 10/14/02 Corrected bug in the receive function, the setup of the -* interrupt status mask was not being done in the loop such -* that a read would sometimes fail on the last byte because -* the transmit error which should have been ignored was -* being used. This would leave an extra byte in the FIFO -* and the bus throttled such that the next operation would -* also fail. Also updated the receive function to not -* disable the device after the last byte until after the -* bus transitions to not busy which is more consistent -* with the expected behavior. -* 1.01c ecm 12/05/02 new rev -* </pre> -* -****************************************************************************/ - -/***************************** Include Files *******************************/ - -#include "xbasic_types.h" -#include "xio.h" -#include "xipif_v1_23_b.h" -#include "xiic_l.h" - -/************************** Constant Definitions ***************************/ - -/**************************** Type Definitions *****************************/ - - -/***************** Macros (Inline Functions) Definitions *******************/ - - -/****************************************************************************** -* -* This macro clears the specified interrupt in the IPIF interrupt status -* register. It is non-destructive in that the register is read and only the -* interrupt specified is cleared. Clearing an interrupt acknowledges it. -* -* @param BaseAddress contains the IPIF registers base address. -* -* @param InterruptMask contains the interrupts to be disabled -* -* @return -* -* None. -* -* @note -* -* Signature: void XIic_mClearIisr(u32 BaseAddress, -* u32 InterruptMask); -* -******************************************************************************/ -#define XIic_mClearIisr(BaseAddress, InterruptMask) \ - XIIF_V123B_WRITE_IISR((BaseAddress), \ - XIIF_V123B_READ_IISR(BaseAddress) & (InterruptMask)) - -/****************************************************************************** -* -* This macro sends the address for a 7 bit address during both read and write -* operations. It takes care of the details to format the address correctly. -* This macro is designed to be called internally to the drivers. -* -* @param SlaveAddress contains the address of the slave to send to. -* -* @param Operation indicates XIIC_READ_OPERATION or XIIC_WRITE_OPERATION -* -* @return -* -* None. -* -* @note -* -* Signature: void XIic_mSend7BitAddr(u16 SlaveAddress, u8 Operation); -* -******************************************************************************/ -#define XIic_mSend7BitAddress(BaseAddress, SlaveAddress, Operation) \ -{ \ - u8 LocalAddr = (u8)(SlaveAddress << 1); \ - LocalAddr = (LocalAddr & 0xFE) | (Operation); \ - XIo_Out8(BaseAddress + XIIC_DTR_REG_OFFSET, LocalAddr); \ -} - -/************************** Function Prototypes ****************************/ - -static unsigned RecvData (u32 BaseAddress, u8 * BufferPtr, - unsigned ByteCount); -static unsigned SendData (u32 BaseAddress, u8 * BufferPtr, - unsigned ByteCount); - -/************************** Variable Definitions **************************/ - - -/****************************************************************************/ -/** -* Receive data as a master on the IIC bus. This function receives the data -* using polled I/O and blocks until the data has been received. It only -* supports 7 bit addressing and non-repeated start modes of operation. The -* user is responsible for ensuring the bus is not busy if multiple masters -* are present on the bus. -* -* @param BaseAddress contains the base address of the IIC device. -* @param Address contains the 7 bit IIC address of the device to send the -* specified data to. -* @param BufferPtr points to the data to be sent. -* @param ByteCount is the number of bytes to be sent. -* -* @return -* -* The number of bytes received. -* -* @note -* -* None -* -******************************************************************************/ -unsigned XIic_Recv (u32 BaseAddress, u8 Address, - u8 * BufferPtr, unsigned ByteCount) -{ - u8 CntlReg; - unsigned RemainingByteCount; - - /* Tx error is enabled incase the address (7 or 10) has no device to answer - * with Ack. When only one byte of data, must set NO ACK before address goes - * out therefore Tx error must not be enabled as it will go off immediately - * and the Rx full interrupt will be checked. If full, then the one byte - * was received and the Tx error will be disabled without sending an error - * callback msg. - */ - XIic_mClearIisr (BaseAddress, - XIIC_INTR_RX_FULL_MASK | XIIC_INTR_TX_ERROR_MASK | - XIIC_INTR_ARB_LOST_MASK); - - /* Set receive FIFO occupancy depth for 1 byte (zero based) - */ - XIo_Out8 (BaseAddress + XIIC_RFD_REG_OFFSET, 0); - - /* 7 bit slave address, send the address for a read operation - * and set the state to indicate the address has been sent - */ - XIic_mSend7BitAddress (BaseAddress, Address, XIIC_READ_OPERATION); - - /* MSMS gets set after putting data in FIFO. Start the master receive - * operation by setting CR Bits MSMS to Master, if the buffer is only one - * byte, then it should not be acknowledged to indicate the end of data - */ - CntlReg = XIIC_CR_MSMS_MASK | XIIC_CR_ENABLE_DEVICE_MASK; - if (ByteCount == 1) { - CntlReg |= XIIC_CR_NO_ACK_MASK; - } - - /* Write out the control register to start receiving data and call the - * function to receive each byte into the buffer - */ - XIo_Out8 (BaseAddress + XIIC_CR_REG_OFFSET, CntlReg); - - /* Clear the latched interrupt status for the bus not busy bit which must - * be done while the bus is busy - */ - XIic_mClearIisr (BaseAddress, XIIC_INTR_BNB_MASK); - - /* Try to receive the data from the IIC bus */ - - RemainingByteCount = RecvData (BaseAddress, BufferPtr, ByteCount); - /* - * The receive is complete, disable the IIC device and return the number of - * bytes that was received - */ - XIo_Out8 (BaseAddress + XIIC_CR_REG_OFFSET, 0); - - /* Return the number of bytes that was received */ - - return ByteCount - RemainingByteCount; -} - -/****************************************************************************** -* -* Receive the specified data from the device that has been previously addressed -* on the IIC bus. This function assumes that the 7 bit address has been sent -* and it should wait for the transmit of the address to complete. -* -* @param BaseAddress contains the base address of the IIC device. -* @param BufferPtr points to the buffer to hold the data that is received. -* @param ByteCount is the number of bytes to be received. -* -* @return -* -* The number of bytes remaining to be received. -* -* @note -* -* This function does not take advantage of the receive FIFO because it is -* designed for minimal code space and complexity. It contains loops that -* that could cause the function not to return if the hardware is not working. -* -* This function assumes that the calling function will disable the IIC device -* after this function returns. -* -******************************************************************************/ -static unsigned RecvData (u32 BaseAddress, u8 * BufferPtr, unsigned ByteCount) -{ - u8 CntlReg; - u32 IntrStatusMask; - u32 IntrStatus; - - /* Attempt to receive the specified number of bytes on the IIC bus */ - - while (ByteCount > 0) { - /* Setup the mask to use for checking errors because when receiving one - * byte OR the last byte of a multibyte message an error naturally - * occurs when the no ack is done to tell the slave the last byte - */ - if (ByteCount == 1) { - IntrStatusMask = - XIIC_INTR_ARB_LOST_MASK | XIIC_INTR_BNB_MASK; - } else { - IntrStatusMask = - XIIC_INTR_ARB_LOST_MASK | - XIIC_INTR_TX_ERROR_MASK | XIIC_INTR_BNB_MASK; - } - - /* Wait for the previous transmit and the 1st receive to complete - * by checking the interrupt status register of the IPIF - */ - while (1) { - IntrStatus = XIIF_V123B_READ_IISR (BaseAddress); - if (IntrStatus & XIIC_INTR_RX_FULL_MASK) { - break; - } - /* Check the transmit error after the receive full because when - * sending only one byte transmit error will occur because of the - * no ack to indicate the end of the data - */ - if (IntrStatus & IntrStatusMask) { - return ByteCount; - } - } - - CntlReg = XIo_In8 (BaseAddress + XIIC_CR_REG_OFFSET); - - /* Special conditions exist for the last two bytes so check for them - * Note that the control register must be setup for these conditions - * before the data byte which was already received is read from the - * receive FIFO (while the bus is throttled - */ - if (ByteCount == 1) { - /* For the last data byte, it has already been read and no ack - * has been done, so clear MSMS while leaving the device enabled - * so it can get off the IIC bus appropriately with a stop. - */ - XIo_Out8 (BaseAddress + XIIC_CR_REG_OFFSET, - XIIC_CR_ENABLE_DEVICE_MASK); - } - - /* Before the last byte is received, set NOACK to tell the slave IIC - * device that it is the end, this must be done before reading the byte - * from the FIFO - */ - if (ByteCount == 2) { - /* Write control reg with NO ACK allowing last byte to - * have the No ack set to indicate to slave last byte read. - */ - XIo_Out8 (BaseAddress + XIIC_CR_REG_OFFSET, - CntlReg | XIIC_CR_NO_ACK_MASK); - } - - /* Read in data from the FIFO and unthrottle the bus such that the - * next byte is read from the IIC bus - */ - *BufferPtr++ = XIo_In8 (BaseAddress + XIIC_DRR_REG_OFFSET); - - /* Clear the latched interrupt status so that it will be updated with - * the new state when it changes, this must be done after the receive - * register is read - */ - XIic_mClearIisr (BaseAddress, XIIC_INTR_RX_FULL_MASK | - XIIC_INTR_TX_ERROR_MASK | - XIIC_INTR_ARB_LOST_MASK); - ByteCount--; - } - - /* Wait for the bus to transition to not busy before returning, the IIC - * device cannot be disabled until this occurs. It should transition as - * the MSMS bit of the control register was cleared before the last byte - * was read from the FIFO. - */ - while (1) { - if (XIIF_V123B_READ_IISR (BaseAddress) & XIIC_INTR_BNB_MASK) { - break; - } - } - - return ByteCount; -} - -/****************************************************************************/ -/** -* Send data as a master on the IIC bus. This function sends the data -* using polled I/O and blocks until the data has been sent. It only supports -* 7 bit addressing and non-repeated start modes of operation. The user is -* responsible for ensuring the bus is not busy if multiple masters are present -* on the bus. -* -* @param BaseAddress contains the base address of the IIC device. -* @param Address contains the 7 bit IIC address of the device to send the -* specified data to. -* @param BufferPtr points to the data to be sent. -* @param ByteCount is the number of bytes to be sent. -* -* @return -* -* The number of bytes sent. -* -* @note -* -* None -* -******************************************************************************/ -unsigned XIic_Send (u32 BaseAddress, u8 Address, - u8 * BufferPtr, unsigned ByteCount) -{ - unsigned RemainingByteCount; - - /* Put the address into the FIFO to be sent and indicate that the operation - * to be performed on the bus is a write operation - */ - XIic_mSend7BitAddress (BaseAddress, Address, XIIC_WRITE_OPERATION); - - /* Clear the latched interrupt status so that it will be updated with the - * new state when it changes, this must be done after the address is put - * in the FIFO - */ - XIic_mClearIisr (BaseAddress, XIIC_INTR_TX_EMPTY_MASK | - XIIC_INTR_TX_ERROR_MASK | XIIC_INTR_ARB_LOST_MASK); - - /* MSMS must be set after putting data into transmit FIFO, indicate the - * direction is transmit, this device is master and enable the IIC device - */ - XIo_Out8 (BaseAddress + XIIC_CR_REG_OFFSET, - XIIC_CR_MSMS_MASK | XIIC_CR_DIR_IS_TX_MASK | - XIIC_CR_ENABLE_DEVICE_MASK); - - /* Clear the latched interrupt - * status for the bus not busy bit which must be done while the bus is busy - */ - XIic_mClearIisr (BaseAddress, XIIC_INTR_BNB_MASK); - - /* Send the specified data to the device on the IIC bus specified by the - * the address - */ - RemainingByteCount = SendData (BaseAddress, BufferPtr, ByteCount); - - /* - * The send is complete, disable the IIC device and return the number of - * bytes that was sent - */ - XIo_Out8 (BaseAddress + XIIC_CR_REG_OFFSET, 0); - - return ByteCount - RemainingByteCount; -} - -/****************************************************************************** -* -* Send the specified buffer to the device that has been previously addressed -* on the IIC bus. This function assumes that the 7 bit address has been sent -* and it should wait for the transmit of the address to complete. -* -* @param BaseAddress contains the base address of the IIC device. -* @param BufferPtr points to the data to be sent. -* @param ByteCount is the number of bytes to be sent. -* -* @return -* -* The number of bytes remaining to be sent. -* -* @note -* -* This function does not take advantage of the transmit FIFO because it is -* designed for minimal code space and complexity. It contains loops that -* that could cause the function not to return if the hardware is not working. -* -******************************************************************************/ -static unsigned SendData (u32 BaseAddress, u8 * BufferPtr, unsigned ByteCount) -{ - u32 IntrStatus; - - /* Send the specified number of bytes in the specified buffer by polling - * the device registers and blocking until complete - */ - while (ByteCount > 0) { - /* Wait for the transmit to be empty before sending any more data - * by polling the interrupt status register - */ - while (1) { - IntrStatus = XIIF_V123B_READ_IISR (BaseAddress); - - if (IntrStatus & (XIIC_INTR_TX_ERROR_MASK | - XIIC_INTR_ARB_LOST_MASK | - XIIC_INTR_BNB_MASK)) { - return ByteCount; - } - - if (IntrStatus & XIIC_INTR_TX_EMPTY_MASK) { - break; - } - } - /* If there is more than one byte to send then put the next byte to send - * into the transmit FIFO - */ - if (ByteCount > 1) { - XIo_Out8 (BaseAddress + XIIC_DTR_REG_OFFSET, - *BufferPtr++); - } else { - /* Set the stop condition before sending the last byte of data so that - * the stop condition will be generated immediately following the data - * This is done by clearing the MSMS bit in the control register. - */ - XIo_Out8 (BaseAddress + XIIC_CR_REG_OFFSET, - XIIC_CR_ENABLE_DEVICE_MASK | - XIIC_CR_DIR_IS_TX_MASK); - - /* Put the last byte to send in the transmit FIFO */ - - XIo_Out8 (BaseAddress + XIIC_DTR_REG_OFFSET, - *BufferPtr++); - } - - /* Clear the latched interrupt status register and this must be done after - * the transmit FIFO has been written to or it won't clear - */ - XIic_mClearIisr (BaseAddress, XIIC_INTR_TX_EMPTY_MASK); - - /* Update the byte count to reflect the byte sent and clear the latched - * interrupt status so it will be updated for the new state - */ - ByteCount--; - } - - /* Wait for the bus to transition to not busy before returning, the IIC - * device cannot be disabled until this occurs. - * Note that this is different from a receive operation because the stop - * condition causes the bus to go not busy. - */ - while (1) { - if (XIIF_V123B_READ_IISR (BaseAddress) & XIIC_INTR_BNB_MASK) { - break; - } - } - - return ByteCount; -} diff --git a/board/xilinx/xilinx_iic/xiic_l.h b/board/xilinx/xilinx_iic/xiic_l.h deleted file mode 100644 index a2c4c49..0000000 --- a/board/xilinx/xilinx_iic/xiic_l.h +++ /dev/null @@ -1,150 +0,0 @@ -/* $Id: xiic_l.h,v 1.2 2002/12/05 19:32:40 meinelte 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. -* -*****************************************************************************/ -/****************************************************************************/ -/** -* -* @file xiic_l.h -* -* This header file contains identifiers and low-level driver functions (or -* macros) that can be used to access the device. High-level driver functions -* are defined in xiic.h. -* -* <pre> -* MODIFICATION HISTORY: -* -* Ver Who Date Changes -* ----- ---- -------- ----------------------------------------------- -* 1.00b jhl 05/07/02 First release -* 1.01c ecm 12/05/02 new rev -* </pre> -* -*****************************************************************************/ - -#ifndef XIIC_L_H /* prevent circular inclusions */ -#define XIIC_L_H /* by using protection macros */ - -/***************************** Include Files ********************************/ - -#include "xbasic_types.h" - -/************************** Constant Definitions ****************************/ - -#define XIIC_MSB_OFFSET 3 - -#define XIIC_REG_OFFSET 0x100 + XIIC_MSB_OFFSET - -/* - * Register offsets in bytes from RegisterBase. Three is added to the - * base offset to access LSB (IBM style) of the word - */ -#define XIIC_CR_REG_OFFSET 0x00+XIIC_REG_OFFSET /* Control Register */ -#define XIIC_SR_REG_OFFSET 0x04+XIIC_REG_OFFSET /* Status Register */ -#define XIIC_DTR_REG_OFFSET 0x08+XIIC_REG_OFFSET /* Data Tx Register */ -#define XIIC_DRR_REG_OFFSET 0x0C+XIIC_REG_OFFSET /* Data Rx Register */ -#define XIIC_ADR_REG_OFFSET 0x10+XIIC_REG_OFFSET /* Address Register */ -#define XIIC_TFO_REG_OFFSET 0x14+XIIC_REG_OFFSET /* Tx FIFO Occupancy */ -#define XIIC_RFO_REG_OFFSET 0x18+XIIC_REG_OFFSET /* Rx FIFO Occupancy */ -#define XIIC_TBA_REG_OFFSET 0x1C+XIIC_REG_OFFSET /* 10 Bit Address reg */ -#define XIIC_RFD_REG_OFFSET 0x20+XIIC_REG_OFFSET /* Rx FIFO Depth reg */ - -/* Control Register masks */ - -#define XIIC_CR_ENABLE_DEVICE_MASK 0x01 /* Device enable = 1 */ -#define XIIC_CR_TX_FIFO_RESET_MASK 0x02 /* Transmit FIFO reset=1 */ -#define XIIC_CR_MSMS_MASK 0x04 /* Master starts Txing=1 */ -#define XIIC_CR_DIR_IS_TX_MASK 0x08 /* Dir of tx. Txing=1 */ -#define XIIC_CR_NO_ACK_MASK 0x10 /* Tx Ack. NO ack = 1 */ -#define XIIC_CR_REPEATED_START_MASK 0x20 /* Repeated start = 1 */ -#define XIIC_CR_GENERAL_CALL_MASK 0x40 /* Gen Call enabled = 1 */ - -/* Status Register masks */ - -#define XIIC_SR_GEN_CALL_MASK 0x01 /* 1=a mstr issued a GC */ -#define XIIC_SR_ADDR_AS_SLAVE_MASK 0x02 /* 1=when addr as slave */ -#define XIIC_SR_BUS_BUSY_MASK 0x04 /* 1 = bus is busy */ -#define XIIC_SR_MSTR_RDING_SLAVE_MASK 0x08 /* 1=Dir: mstr <-- slave */ -#define XIIC_SR_TX_FIFO_FULL_MASK 0x10 /* 1 = Tx FIFO full */ -#define XIIC_SR_RX_FIFO_FULL_MASK 0x20 /* 1 = Rx FIFO full */ -#define XIIC_SR_RX_FIFO_EMPTY_MASK 0x40 /* 1 = Rx FIFO empty */ - -/* IPIF Interrupt Status Register masks Interrupt occurs when... */ - -#define XIIC_INTR_ARB_LOST_MASK 0x01 /* 1 = arbitration lost */ -#define XIIC_INTR_TX_ERROR_MASK 0x02 /* 1=Tx error/msg complete*/ -#define XIIC_INTR_TX_EMPTY_MASK 0x04 /* 1 = Tx FIFO/reg empty */ -#define XIIC_INTR_RX_FULL_MASK 0x08 /* 1=Rx FIFO/reg=OCY level*/ -#define XIIC_INTR_BNB_MASK 0x10 /* 1 = Bus not busy */ -#define XIIC_INTR_AAS_MASK 0x20 /* 1 = when addr as slave */ -#define XIIC_INTR_NAAS_MASK 0x40 /* 1 = not addr as slave */ -#define XIIC_INTR_TX_HALF_MASK 0x80 /* 1 = TX FIFO half empty */ - -/* IPIF Device Interrupt Register masks */ - -#define XIIC_IPIF_IIC_MASK 0x00000004UL /* 1=inter enabled */ -#define XIIC_IPIF_ERROR_MASK 0x00000001UL /* 1=inter enabled */ -#define XIIC_IPIF_INTER_ENABLE_MASK (XIIC_IPIF_IIC_MASK | \ - XIIC_IPIF_ERROR_MASK) - -#define XIIC_TX_ADDR_SENT 0x00 -#define XIIC_TX_ADDR_MSTR_RECV_MASK 0x02 - -/* The following constants specify the depth of the FIFOs */ - -#define IIC_RX_FIFO_DEPTH 16 /* Rx fifo capacity */ -#define IIC_TX_FIFO_DEPTH 16 /* Tx fifo capacity */ - -/* The following constants specify groups of interrupts that are typically - * enabled or disables at the same time - */ -#define XIIC_TX_INTERRUPTS \ - (XIIC_INTR_TX_ERROR_MASK | XIIC_INTR_TX_EMPTY_MASK | \ - XIIC_INTR_TX_HALF_MASK) - -#define XIIC_TX_RX_INTERRUPTS (XIIC_INTR_RX_FULL_MASK | XIIC_TX_INTERRUPTS) - -/* The following constants are used with the following macros to specify the - * operation, a read or write operation. - */ -#define XIIC_READ_OPERATION 1 -#define XIIC_WRITE_OPERATION 0 - -/* The following constants are used with the transmit FIFO fill function to - * specify the role which the IIC device is acting as, a master or a slave. - */ -#define XIIC_MASTER_ROLE 1 -#define XIIC_SLAVE_ROLE 0 - -/**************************** Type Definitions ******************************/ - - -/***************** Macros (Inline Functions) Definitions ********************/ - - -/************************** Function Prototypes *****************************/ - -unsigned XIic_Recv(u32 BaseAddress, u8 Address, - u8 *BufferPtr, unsigned ByteCount); - -unsigned XIic_Send(u32 BaseAddress, u8 Address, - u8 *BufferPtr, unsigned ByteCount); - -#endif /* end of protection macro */ diff --git a/board/xilinx/zynq/Makefile b/board/xilinx/zynq/Makefile index ef4faa1..43c552d 100644 --- a/board/xilinx/zynq/Makefile +++ b/board/xilinx/zynq/Makefile @@ -22,9 +22,6 @@ # include $(TOPDIR)/config.mk -ifneq ($(OBJTREE),$(SRCTREE)) -$(shell mkdir -p $(obj)../common) -endif LIB = $(obj)lib$(BOARD).o |