Initial version.

2023-12-20 00:11:03 +08:00
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+/******************************************************************************
+*
+* Copyright (C) 2014 - 2017 Xilinx, Inc. All rights reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+* XILINX  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE.
+*
+* Except as contained in this notice, the name of the Xilinx shall not be used
+* in advertising or otherwise to promote the sale, use or other dealings in
+* this Software without prior written authorization from Xilinx.
+*
+******************************************************************************/
+
+/*****************************************************************************/
+/**
+* @file sleep.h
+*
+*  This header file contains ARM Cortex A53,A9,R5,Microblaze specific sleep
+*  related APIs.
+*
+* <pre>
+* MODIFICATION HISTORY :
+*
+* Ver   Who  Date	 Changes
+* ----- ---- -------- -------------------------------------------------------
+* 6.6   srm  11/02/17 Added processor specific sleep rountines
+*								 function prototypes.
+*
+* </pre>
+*
+******************************************************************************/
+
+#ifndef SLEEP_H
+#define SLEEP_H
+
+#include "xil_types.h"
+#include "xil_io.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*****************************************************************************/
+/**
+*
+* This macro polls an address periodically until a condition is met or till the
+* timeout occurs.
+* The minimum timeout for calling this macro is 100us. If the timeout is less
+* than 100us, it still waits for 100us. Also the unit for the timeout is 100us.
+* If the timeout is not a multiple of 100us, it waits for a timeout of
+* the next usec value which is a multiple of 100us.
+*
+* @param            IO_func - accessor function to read the register contents.
+*                   Depends on the register width.
+* @param            ADDR - Address to be polled
+* @param            VALUE - variable to read the value
+* @param            COND - Condition to checked (usually involves VALUE)
+* @param            TIMEOUT_US - timeout in micro seconds
+*
+* @return           0 - when the condition is met
+*                   -1 - when the condition is not met till the timeout period
+*
+* @note             none
+*
+*****************************************************************************/
+#define Xil_poll_timeout(IO_func, ADDR, VALUE, COND, TIMEOUT_US) \
+ ( {	  \
+	u64 timeout = TIMEOUT_US/100;    \
+	if(TIMEOUT_US%100!=0)	\
+		timeout++;   \
+	for(;;) { \
+		VALUE = IO_func(ADDR); \
+		if(COND) \
+			break; \
+		else {    \
+			usleep(100);  \
+			timeout--; \
+			if(timeout==0) \
+			break;  \
+		}  \
+	}    \
+	(timeout>0) ? 0 : -1;  \
+ }  )
+
+void usleep(unsigned long useconds);
+void sleep(unsigned int seconds);
+int usleep_R5(unsigned long useconds);
+unsigned sleep_R5(unsigned int seconds);
+int usleep_MB(unsigned long useconds);
+unsigned sleep_MB(unsigned int seconds);
+int usleep_A53(unsigned long useconds);
+unsigned sleep_A53(unsigned int seconds);
+int usleep_A9(unsigned long useconds);
+unsigned sleep_A9(unsigned int seconds);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif