2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
666 lines
No EOL
20 KiB
C
Executable file
666 lines
No EOL
20 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2007 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file xmbox.c
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*
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* Contains required functions for the XMbox driver.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ---- -------- -----------------------------------------------
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* 1.00a va First release
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* 1.00a ecm 06/01/07 Cleanup, new coding standard, check into XCS
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* 1.01a ecm 08/19/08 Fixed the receive routine, FSL leg, was using SendID
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* instead of the correct RecvID.
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* Fixed CRs 466320, 466322, 476535, 476242, 476243
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* new rev
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* 2.00a hm 04/09/09 Added support for mailbox v2.0, which has interrupts;
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* Fixed CR 502464, which removed extra
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* definitions that are not associated with
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* the interface.
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* Fixed the canonical definition so that each
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* interface is considered as a device instance.
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* 3.00a hbm 10/19/09 Migrated to HAL phase 1 to use xil_io.
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* Removed _m from the function names.
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* Renamed _mIsEmpty to _IsEmptyHw and _mIsFull
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* to _IsFullHw.
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* 3.02a bss 08/18/12 Added XMbox_GetStatus API for CR 676187
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*
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* </pre>
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*
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******************************************************************************/
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/***************************** Include Files *********************************/
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#include <string.h>
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#include "xmbox.h"
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#include "xil_assert.h"
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/************************** Constant Definitions *****************************/
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/**************************** Type Definitions *******************************/
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/***************** Macros (Inline Functions) Definitions *********************/
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/************************** Function Prototypes ******************************/
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/************************** Variable Definitions *****************************/
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/*****************************************************************************/
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/**
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*
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* Initializes a specific mailbox.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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* @param CfgPtr is the device configuration structure containing
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* required HW build data.
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* @param EffectiveAddr is the Physical address of the hardware in a
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* Virtual Memory operating system environment. It is the Base
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* Address in a stand alone environment.
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*
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* @return
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* - XST_SUCCESS if initialization was successful
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*
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* @note None.
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*
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******************************************************************************/
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int XMbox_CfgInitialize(XMbox *InstancePtr, XMbox_Config *ConfigPtr,
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u32 EffectiveAddress)
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{
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(ConfigPtr != NULL);
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/*
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* Clear instance memory and make copy of configuration
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*/
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memset(InstancePtr, 0, sizeof(XMbox));
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memcpy(&InstancePtr->Config, ConfigPtr, sizeof(XMbox_Config));
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InstancePtr->Config.BaseAddress = EffectiveAddress;
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InstancePtr->IsReady = XIL_COMPONENT_IS_READY;
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return XST_SUCCESS;
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}
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/*****************************************************************************/
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/**
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*
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* Reads requested bytes from the mailbox referenced by InstancePtr,into the
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* buffer pointed to by the provided pointer. The number of bytes must be a
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* multiple of 4 (bytes). If not, the call will fail in an assert.
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*
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* This function is non blocking.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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* @param BufferPtr is the buffer to read the mailbox contents into,
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* aligned to a word boundary.
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* @param RequestedBytes is the number of bytes of data requested.
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* @param BytesRecvdPtr is the memory that is updated with the number of
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* bytes of data actually read.
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*
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* @return
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* - XST_SUCCESS on success.
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* - XST_NO_DATA ifthere was no data in the mailbox.
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*
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* On success, the number of bytes read is returned through the pointer. The
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* call may return with fewer bytes placed in the buffer than requested (not
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* including zero). This is not necessarily an error condition and indicates
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* the amount of data that was currently available in the mailbox.
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*
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* @note None.
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*
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******************************************************************************/
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int XMbox_Read(XMbox *InstancePtr, u32 *BufferPtr, u32 RequestedBytes,
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u32 *BytesRecvdPtr)
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{
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u32 NumBytes;
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(!((u32) BufferPtr & 0x3));
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Xil_AssertNonvoid(RequestedBytes != 0);
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Xil_AssertNonvoid((RequestedBytes %4) == 0);
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Xil_AssertNonvoid(BytesRecvdPtr != NULL);
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NumBytes = 0;
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if (InstancePtr->Config.UseFSL == 0) {
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/* For memory mapped IO */
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if (XMbox_IsEmptyHw(InstancePtr->Config.BaseAddress))
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return XST_NO_DATA;
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/*
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* Read the Mailbox until empty or the length requested is
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* satisfied
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*/
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do {
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*BufferPtr++ =
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XMbox_ReadMBox(InstancePtr->Config.BaseAddress);
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NumBytes += 4;
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} while ((NumBytes != RequestedBytes) &&
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!(XMbox_IsEmptyHw(InstancePtr->Config.BaseAddress)));
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*BytesRecvdPtr = NumBytes;
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} else {
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/* FSL based Access */
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if (XMbox_FSLIsEmpty(InstancePtr->Config.RecvID))
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return XST_NO_DATA;
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/*
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* Read the Mailbox until empty or the length requested is
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* satisfied
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*/
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do {
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*BufferPtr++ =
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XMbox_FSLReadMBox(InstancePtr->Config.RecvID);
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NumBytes += 4;
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} while ((NumBytes != RequestedBytes) &&
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!(XMbox_FSLIsEmpty(InstancePtr->Config.RecvID)));
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*BytesRecvdPtr = NumBytes;
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}
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return XST_SUCCESS;
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}
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/*****************************************************************************/
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/**
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*
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* Reads requested bytes from the mailbox referenced by InstancePtr,into the
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* buffer pointed to by the provided pointer. The number of bytes must be a
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* multiple of 4 (bytes). If not, the call will fail in an assert.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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* @param BufferPtr is the buffer to read the mailbox contents into,
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* aligned to a word boundary.
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* @param RequestedBytes is the number of bytes of data requested.
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*
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* @return None.
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*
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* @note The call blocks until the number of bytes requested are
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* available.
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*
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******************************************************************************/
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void XMbox_ReadBlocking(XMbox *InstancePtr, u32 *BufferPtr,
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u32 RequestedBytes)
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{
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u32 NumBytes;
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Xil_AssertVoid(InstancePtr != NULL);
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Xil_AssertVoid(!((u32) BufferPtr & 0x3));
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Xil_AssertVoid(RequestedBytes != 0);
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Xil_AssertVoid((RequestedBytes % 4) == 0);
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NumBytes = 0;
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if (InstancePtr->Config.UseFSL == 0) {
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/* For memory mapped IO */
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/* Block while the mailbox FIFO has at-least some data */
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do {
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while(XMbox_IsEmptyHw(InstancePtr->Config.BaseAddress));
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/*
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* Read the Mailbox until empty or the length
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* requested is satisfied
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*/
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*BufferPtr++ =
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XMbox_ReadMBox(InstancePtr->Config.BaseAddress);
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NumBytes += 4;
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} while (NumBytes != RequestedBytes);
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} else {
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/* FSL based Access */
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/* Block while the mailbox FIFO has at-least some data */
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do {
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while (XMbox_FSLIsEmpty(InstancePtr->Config.RecvID));
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/*
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* Read the Mailbox until empty or the length requested
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* is satisfied
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*/
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*BufferPtr++ =
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XMbox_FSLReadMBox(InstancePtr->Config.RecvID);
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NumBytes += 4;
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} while (NumBytes != RequestedBytes);
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}
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}
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/*****************************************************************************/
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/**
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* Writes the requested bytes from the buffer pointed to by the provided
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* pointer into the mailbox referenced by InstancePtr.The number of bytes must
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* be a multiple of 4 (bytes). If not, the call will fail in an assert.
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*
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* This function is non blocking.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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* @param BufferPtr is the source data buffer, aligned to a word
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* boundary.
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* @param RequestedBytes is the number of bytes requested to be written.
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* @param BytesRecvdPtr points to memory which is updated with the actual
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* number of bytes written, return value.
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* @return
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*
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* - XST_SUCCESS on success.
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* - XST_FIFO_NO_ROOM if the fifo was full.
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* On success, the number of bytes successfully written into the destination
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* mailbox is returned in the provided pointer. The call may return with
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* zero. This is not necessarily an error condition and indicates that the
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* mailbox is currently full.
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*
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* @note The provided buffer pointed to by BufferPtr must be aligned to a
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* word boundary.
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*
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******************************************************************************/
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int XMbox_Write(XMbox *InstancePtr, u32 *BufferPtr, u32 RequestedBytes,
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u32 *BytesSentPtr)
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{
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u32 NumBytes;
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(!((u32) BufferPtr & 0x3));
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Xil_AssertNonvoid(RequestedBytes != 0);
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Xil_AssertNonvoid((RequestedBytes %4) == 0);
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Xil_AssertNonvoid(BytesSentPtr != NULL);
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NumBytes = 0;
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if (InstancePtr->Config.UseFSL == 0) {
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/* For memory mapped IO */
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if (XMbox_IsFullHw(InstancePtr->Config.BaseAddress)) {
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return XST_FIFO_NO_ROOM;
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}
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/*
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* Write to the Mailbox until full or the length requested is
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* satisfied.
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*/
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do {
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XMbox_WriteMBox(InstancePtr->Config.BaseAddress,
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*BufferPtr++);
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NumBytes += 4;
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} while ((NumBytes != RequestedBytes) &&
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!(XMbox_IsFullHw(InstancePtr->Config.BaseAddress)));
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*BytesSentPtr = NumBytes;
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} else {
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/* FSL based Access */
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if (XMbox_FSLIsFull(InstancePtr->Config.SendID)) {
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return XST_FIFO_NO_ROOM;
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}
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/*
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* Write to the Mailbox until full or the length requested is
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* satisfied.
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*/
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do {
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XMbox_FSLWriteMBox(InstancePtr->Config.SendID,
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*BufferPtr++);
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NumBytes += 4;
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} while ((NumBytes != RequestedBytes) &&
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!(XMbox_FSLIsFull(InstancePtr->Config.SendID)));
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*BytesSentPtr = NumBytes;
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}
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return XST_SUCCESS;
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}
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/*****************************************************************************/
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/**
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* Writes the requested bytes from the buffer pointed to by the provided
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* pointer into the mailbox referenced by InstancePtr. The number of bytes must
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* be a multiple of 4 (bytes). If not, the call will fail in an assert.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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* @param BufferPtr is the source data buffer, aligned to a word boundary.
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* @param RequestedBytes is the number of bytes requested to be written.
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*
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* @return None.
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*
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* @note The call blocks until the number of bytes requested are written.
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* The provided buffer pointed to by BufferPtr must be aligned to a
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* word boundary.
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*
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******************************************************************************/
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void XMbox_WriteBlocking(XMbox *InstancePtr, u32 *BufferPtr, u32 RequestedBytes)
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{
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u32 NumBytes;
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Xil_AssertVoid(InstancePtr != NULL);
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Xil_AssertVoid(!((u32) BufferPtr & 0x3));
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Xil_AssertVoid(RequestedBytes != 0);
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Xil_AssertVoid((RequestedBytes %4) == 0);
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NumBytes = 0;
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if (InstancePtr->Config.UseFSL == 0) {
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/* For memory mapped IO */
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/* Block while the mailbox FIFO becomes free to transfer
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* at-least one word
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*/
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do {
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while (XMbox_IsFullHw(InstancePtr->Config.BaseAddress));
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XMbox_WriteMBox(InstancePtr->Config.BaseAddress,
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*BufferPtr++);
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NumBytes += 4;
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} while (NumBytes != RequestedBytes);
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} else {
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/* FSL based Access */
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/* Block while the mailbox FIFO becomes free to transfer
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* at-least one word
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*/
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do {
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while (XMbox_FSLIsFull(InstancePtr->Config.SendID));
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XMbox_FSLWriteMBox(InstancePtr->Config.SendID,
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*BufferPtr++);
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NumBytes += 4;
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} while (NumBytes != RequestedBytes);
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}
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}
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/*****************************************************************************/
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/**
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*
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* Checks to see if there is data available to be read.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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*
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* @return
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* - FALSE if there is data to be read.
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* - TRUE is there no data to be read.
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*
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* @note None.
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*
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******************************************************************************/
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u32 XMbox_IsEmpty(XMbox *InstancePtr)
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{
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Xil_AssertNonvoid(InstancePtr != NULL);
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if (InstancePtr->Config.UseFSL == 0) {
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/* For memory mapped IO */
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return (XMbox_IsEmptyHw(InstancePtr->Config.BaseAddress));
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} else {
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/* FSL based Access */
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return (XMbox_FSLIsEmpty(InstancePtr->Config.RecvID));
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}
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}
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/*****************************************************************************/
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/**
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*
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* Checks to see if there is room in the write FIFO.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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*
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* @return
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* - FALSE if there is room in write FIFO.
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* - TRUE if there is room in write FIFO.
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*
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* @note None.
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*
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******************************************************************************/
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u32 XMbox_IsFull(XMbox *InstancePtr)
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{
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Xil_AssertNonvoid(InstancePtr != NULL);
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if (InstancePtr->Config.UseFSL == 0) {
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/* For memory mapped IO */
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return (XMbox_IsFullHw(InstancePtr->Config.BaseAddress));
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} else {
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/* FSL based Access */
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return (XMbox_FSLIsFull(InstancePtr->Config.SendID));
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}
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}
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/*****************************************************************************/
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/**
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*
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* Resets the mailbox FIFOs by empting the READ FIFO and making sure the
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* Error Status is zero.
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*
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* @param InstancePtr is a pointer to the XMbox instance to be worked on.
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*
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* @return
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* - XST_SUCCESS on success.
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* - XST_FAILURE if there are any outstanding errors.
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*
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* @note Data from read FIFO is thrown away.
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*
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******************************************************************************/
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int XMbox_Flush(XMbox *InstancePtr)
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{
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Xil_AssertNonvoid(InstancePtr != NULL);
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if (InstancePtr->Config.UseFSL == 0) {
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/* For memory mapped IO */
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do {
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(void)XMbox_ReadMBox(InstancePtr->Config.BaseAddress);
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} while (!(XMbox_IsEmptyHw(InstancePtr->Config.BaseAddress)));
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} else {
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/* FSL based Access */
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do {
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(void) XMbox_FSLReadMBox(InstancePtr->Config.RecvID);
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} while (!(XMbox_FSLIsEmpty(InstancePtr->Config.RecvID)));
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}
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return XST_SUCCESS;
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}
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/*****************************************************************************/
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/**
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* Sets the interrupt enable register for this mailbox. This function can only
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* be used for Non-FSL interface. If not, the function will fail in an assert.
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*
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* @param InstancePtr is a pointer to the instance to be worked on.
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* @param Mask is a logical OR of XMB_IX_* constants found in xmbox_hw.h.
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*
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* @return None.
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*
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* @note None.
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*
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******************************************************************************/
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void XMbox_SetInterruptEnable(XMbox *InstancePtr, u32 Mask)
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{
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Xil_AssertVoid(InstancePtr != NULL);
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Xil_AssertVoid(InstancePtr->Config.UseFSL == 0);
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if (InstancePtr->Config.UseFSL == 0)
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XMbox_WriteReg(InstancePtr->Config.BaseAddress,
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XMB_IE_REG_OFFSET,
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Mask);
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}
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/*****************************************************************************/
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/**
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* Retrieves the interrupt enable for the mailbox. AND the result of this
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* function with XMB_IX_* to determine which interrupts of this mailbox
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* are enabled. This function can only be used for Non-FSL interface. If not,
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* the function will fail in an assert.
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*
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* @param InstancePtr is a pointer to the instance to be worked on.
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*
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* @return Mask of interrupt bits made up of XMB_IX_* constants found
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* in xmbox_hw.h.
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*
|
|
* @note None.
|
|
*
|
|
*
|
|
******************************************************************************/
|
|
u32 XMbox_GetInterruptEnable(XMbox *InstancePtr)
|
|
{
|
|
Xil_AssertNonvoid(InstancePtr != NULL);
|
|
Xil_AssertNonvoid(InstancePtr->Config.UseFSL == 0);
|
|
|
|
return XMbox_ReadReg(InstancePtr->Config.BaseAddress,
|
|
XMB_IE_REG_OFFSET);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/**
|
|
* Retrieve the interrupt status for the mailbox. AND the results of this
|
|
* function with XMB_IX_* to determine which interrupts are currently pending
|
|
* to the processor. This function can only be used for Non-FSL interface.
|
|
* If not, the function will fail in an assert.
|
|
*
|
|
* @param InstancePtr is a pointer to the instance to be worked on.
|
|
*
|
|
* @return Mask of interrupt bits made up of XMB_IX_* constants found
|
|
* in xmbox_hw.h.
|
|
*
|
|
******************************************************************************/
|
|
u32 XMbox_GetInterruptStatus(XMbox *InstancePtr)
|
|
{
|
|
Xil_AssertNonvoid(InstancePtr != NULL);
|
|
Xil_AssertNonvoid(InstancePtr->Config.UseFSL == 0);
|
|
|
|
return XMbox_ReadReg(InstancePtr->Config.BaseAddress,
|
|
XMB_IS_REG_OFFSET);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/**
|
|
* Clears pending interrupts with the provided mask. This function should be
|
|
* called after the software has serviced the interrupts that are pending.
|
|
* This function clears the corresponding bits of the Interrupt Status
|
|
* Register. This function can only be used for Non-FSL interface. If not, the
|
|
* function will fail in an assert.
|
|
*
|
|
* @param InstancePtr is a pointer to the instance to be worked on.
|
|
* @param Mask is a logical OR of XMB_IX_* constants found in
|
|
* xmbox_hw.h.
|
|
*
|
|
* @note None.
|
|
*
|
|
******************************************************************************/
|
|
void XMbox_ClearInterrupt(XMbox *InstancePtr, u32 Mask)
|
|
{
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
|
Xil_AssertVoid(InstancePtr->Config.UseFSL == 0);
|
|
|
|
if (InstancePtr->Config.UseFSL == 0) {
|
|
XMbox_WriteReg(InstancePtr->Config.BaseAddress,
|
|
XMB_IS_REG_OFFSET,
|
|
Mask);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/**
|
|
* Sets the Send Interrupt Threshold. This function can only be used for
|
|
* Non-FSL interface. If not, the function will fail in an assert.
|
|
*
|
|
* @param InstancePtr is a pointer to the instance to be worked on.
|
|
* @param Value is a value to set for the SIT. Only lower
|
|
* Log2(FIFO Depth) bits are used.
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note None.
|
|
*
|
|
******************************************************************************/
|
|
void XMbox_SetSendThreshold(XMbox *InstancePtr, u32 Value)
|
|
{
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
|
Xil_AssertVoid(InstancePtr->Config.UseFSL == 0);
|
|
|
|
if (InstancePtr->Config.UseFSL == 0) {
|
|
XMbox_WriteReg(InstancePtr->Config.BaseAddress,
|
|
XMB_SIT_REG_OFFSET,
|
|
Value);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/**
|
|
* Set the Receive Interrupt Threshold. This function can only be used for
|
|
* Non-FSL interface. If not, the function will fail in an assert.
|
|
* @param InstancePtr is a pointer to the instance to be worked on.
|
|
* @param Value is a value to set for the RIT. Only lower
|
|
* Log2(FIFO Depth) bits are used.
|
|
*
|
|
* @return None.
|
|
*
|
|
* @note None.
|
|
*
|
|
******************************************************************************/
|
|
void XMbox_SetReceiveThreshold(XMbox *InstancePtr, u32 Value)
|
|
{
|
|
Xil_AssertVoid(InstancePtr != NULL);
|
|
Xil_AssertVoid(InstancePtr->Config.UseFSL == 0);
|
|
|
|
if (InstancePtr->Config.UseFSL == 0) {
|
|
XMbox_WriteReg(InstancePtr->Config.BaseAddress,
|
|
XMB_RIT_REG_OFFSET,
|
|
Value);
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/**
|
|
* Returns Status register contents. This function can only be used for
|
|
* Non-FSL interface. If not, the function will fail in an assert.
|
|
* @param InstancePtr is a pointer to the instance to be worked on.
|
|
*
|
|
* @return Value returns Status Register contents.
|
|
*
|
|
* @note None.
|
|
*
|
|
******************************************************************************/
|
|
u32 XMbox_GetStatus(XMbox *InstancePtr)
|
|
{
|
|
u32 Value;
|
|
Xil_AssertNonvoid(InstancePtr != NULL);
|
|
Xil_AssertNonvoid(InstancePtr->Config.UseFSL == 0);
|
|
|
|
|
|
Value = XMbox_ReadReg(InstancePtr->Config.BaseAddress,
|
|
XMB_STATUS_REG_OFFSET);
|
|
return Value;
|
|
|
|
} |