mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 04:42:12 +00:00
01081f5ab9
Keeping drivers related to HW tracing on ARM, i.e coresight, under "drivers/coresight" doesn't make sense when other architectures start rolling out technologies of the same nature. As such creating a new "drivers/hwtracing" directory where all drivers of the same kind can reside, reducing namespace pollution under "drivers/". Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 and
|
|
* only version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _CORESIGHT_PRIV_H
|
|
#define _CORESIGHT_PRIV_H
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/io.h>
|
|
#include <linux/coresight.h>
|
|
|
|
/*
|
|
* Coresight management registers (0xf00-0xfcc)
|
|
* 0xfa0 - 0xfa4: Management registers in PFTv1.0
|
|
* Trace registers in PFTv1.1
|
|
*/
|
|
#define CORESIGHT_ITCTRL 0xf00
|
|
#define CORESIGHT_CLAIMSET 0xfa0
|
|
#define CORESIGHT_CLAIMCLR 0xfa4
|
|
#define CORESIGHT_LAR 0xfb0
|
|
#define CORESIGHT_LSR 0xfb4
|
|
#define CORESIGHT_AUTHSTATUS 0xfb8
|
|
#define CORESIGHT_DEVID 0xfc8
|
|
#define CORESIGHT_DEVTYPE 0xfcc
|
|
|
|
#define TIMEOUT_US 100
|
|
#define BMVAL(val, lsb, msb) ((val & GENMASK(msb, lsb)) >> lsb)
|
|
|
|
static inline void CS_LOCK(void __iomem *addr)
|
|
{
|
|
do {
|
|
/* Wait for things to settle */
|
|
mb();
|
|
writel_relaxed(0x0, addr + CORESIGHT_LAR);
|
|
} while (0);
|
|
}
|
|
|
|
static inline void CS_UNLOCK(void __iomem *addr)
|
|
{
|
|
do {
|
|
writel_relaxed(CORESIGHT_UNLOCK, addr + CORESIGHT_LAR);
|
|
/* Make sure everyone has seen this */
|
|
mb();
|
|
} while (0);
|
|
}
|
|
|
|
#ifdef CONFIG_CORESIGHT_SOURCE_ETM3X
|
|
extern int etm_readl_cp14(u32 off, unsigned int *val);
|
|
extern int etm_writel_cp14(u32 off, u32 val);
|
|
#else
|
|
static inline int etm_readl_cp14(u32 off, unsigned int *val) { return 0; }
|
|
static inline int etm_writel_cp14(u32 off, u32 val) { return 0; }
|
|
#endif
|
|
|
|
#endif
|