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stm class/intel_th: Updates for 4.17 

These are:
   * Mass conversion to GPL-2 SPDX header
   * Moved "hwtracing" to now its own submenu, to uncrowd the parent menu a bit
   * Added MAINTAINERS entry for drivers/hwtracing
   * Somewhat small Trace Hub fixes
   * Added ACPI glue layer for the Trace Hub
   * Added more module parameters to dummy_stm for better test coverage
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Merge tag 'stm-intel_th-for-greg-20180329' of git://git.kernel.org/pub/scm/linux/kernel/git/ash/stm into char-misc-next

Alexander writes:

stm class/intel_th: Updates for 4.17

These are:
  * Mass conversion to GPL-2 SPDX header
  * Moved "hwtracing" to now its own submenu, to uncrowd the parent menu a bit
  * Added MAINTAINERS entry for drivers/hwtracing
  * Somewhat small Trace Hub fixes
  * Added ACPI glue layer for the Trace Hub
  * Added more module parameters to dummy_stm for better test coverage
This commit is contained in:
Greg Kroah-Hartman 2018-03-29 14:15:13 +02:00
parent 45ea83f02d 72ef0f24d5
commit 86f690e8bf
27 changed files with 172 additions and 200 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
MAINTAINERS
View File

@ -6244,6 +6244,11 @@ F: Documentation/hw_random.txt
F: drivers/char/hw_random/
F: include/linux/hw_random.h
HARDWARE TRACING FACILITIES
M: Alexander Shishkin <alexander.shishkin@linux.intel.com>
S: Maintained
F: drivers/hwtracing/
HARDWARE SPINLOCK CORE
M: Ohad Ben-Cohen <ohad@wizery.com>
M: Bjorn Andersson <bjorn.andersson@linaro.org>

4
drivers/Kconfig
View File

@ -199,9 +199,7 @@ source "drivers/dax/Kconfig"
source "drivers/nvmem/Kconfig"
source "drivers/hwtracing/stm/Kconfig"
source "drivers/hwtracing/intel_th/Kconfig"
source "drivers/hwtracing/Kconfig"
source "drivers/fpga/Kconfig"

7
drivers/hwtracing/Kconfig Normal file
View File

@ -0,0 +1,7 @@
menu "HW tracing support"
source "drivers/hwtracing/stm/Kconfig"
source "drivers/hwtracing/intel_th/Kconfig"
endmenu

12
drivers/hwtracing/intel_th/Kconfig
View File

@ -25,6 +25,18 @@ config INTEL_TH_PCI
Say Y here to enable PCI Intel TH support.
config INTEL_TH_ACPI
tristate "Intel(R) Trace Hub ACPI controller"
depends on ACPI
help
Intel(R) Trace Hub may exist as an ACPI device. This option enables
support glue layer for ACPI-based Intel TH. This typically implies
'host debugger' mode, that is, the trace configuration and capture
is handled by an external debug host and corresponding controls will
not be available on the target.
Say Y here to enable ACPI Intel TH support.
config INTEL_TH_GTH
tristate "Intel(R) Trace Hub Global Trace Hub"
help

3
drivers/hwtracing/intel_th/Makefile
View File

@ -6,6 +6,9 @@ intel_th-$(CONFIG_INTEL_TH_DEBUG) += debug.o
obj-$(CONFIG_INTEL_TH_PCI) += intel_th_pci.o
intel_th_pci-y := pci.o
obj-$(CONFIG_INTEL_TH_ACPI) += intel_th_acpi.o
intel_th_acpi-y := acpi.o
obj-$(CONFIG_INTEL_TH_GTH) += intel_th_gth.o
intel_th_gth-y := gth.o

79
drivers/hwtracing/intel_th/acpi.c Normal file
View File

@ -0,0 +1,79 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub ACPI driver
*
* Copyright (C) 2017 Intel Corporation.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/types.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include "intel_th.h"
#define DRIVER_NAME "intel_th_acpi"
static const struct intel_th_drvdata intel_th_acpi_pch = {
.host_mode_only = 1,
};
static const struct intel_th_drvdata intel_th_acpi_uncore = {
.host_mode_only = 1,
};
static const struct acpi_device_id intel_th_acpi_ids[] = {
{ "INTC1000", (kernel_ulong_t)&intel_th_acpi_uncore },
{ "INTC1001", (kernel_ulong_t)&intel_th_acpi_pch },
{ "", 0 },
};
MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids);
static int intel_th_acpi_probe(struct platform_device *pdev)
{
struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
const struct acpi_device_id *id;
struct intel_th *th;
id = acpi_match_device(intel_th_acpi_ids, &pdev->dev);
if (!id)
return -ENODEV;
th = intel_th_alloc(&pdev->dev, (void *)id->driver_data,
pdev->resource, pdev->num_resources, -1);
if (IS_ERR(th))
return PTR_ERR(th);
adev->driver_data = th;
return 0;
}
static int intel_th_acpi_remove(struct platform_device *pdev)
{
struct intel_th *th = platform_get_drvdata(pdev);
intel_th_free(th);
return 0;
}
static struct platform_driver intel_th_acpi_driver = {
.probe = intel_th_acpi_probe,
.remove = intel_th_acpi_remove,
.driver = {
.name = DRIVER_NAME,
.acpi_match_table = intel_th_acpi_ids,
},
};
module_platform_driver(intel_th_acpi_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver");
MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");

31
drivers/hwtracing/intel_th/core.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub driver core
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@ -638,7 +630,8 @@ intel_th_subdevice_alloc(struct intel_th *th,
thdev->output.port = -1;
thdev->output.scratchpad = subdev->scrpd;
} else if (subdev->type == INTEL_TH_SWITCH) {
thdev->host_mode = host_mode;
thdev->host_mode =
INTEL_TH_CAP(th, host_mode_only) ? true : host_mode;
th->hub = thdev;
}
@ -737,7 +730,8 @@ static int intel_th_populate(struct intel_th *th)
struct intel_th_device *thdev;
/* only allow SOURCE and SWITCH devices in host mode */
if (host_mode && subdev->type == INTEL_TH_OUTPUT)
if ((INTEL_TH_CAP(th, host_mode_only) || host_mode) &&
subdev->type == INTEL_TH_OUTPUT)
continue;
/*
@ -813,7 +807,14 @@ intel_th_alloc(struct device *dev, struct intel_th_drvdata *drvdata,
struct resource *devres, unsigned int ndevres, int irq)
{
struct intel_th *th;
int err;
int err, r;
if (irq == -1)
for (r = 0; r < ndevres; r++)
if (devres[r].flags & IORESOURCE_IRQ) {
irq = devres[r].start;
break;
}
th = kzalloc(sizeof(*th), GFP_KERNEL);
if (!th)
@ -935,9 +936,13 @@ EXPORT_SYMBOL_GPL(intel_th_trace_disable);
int intel_th_set_output(struct intel_th_device *thdev,
unsigned int master)
{
struct intel_th_device *hub = to_intel_th_device(thdev->dev.parent);
struct intel_th_device *hub = to_intel_th_hub(thdev);
struct intel_th_driver *hubdrv = to_intel_th_driver(hub->dev.driver);
/* In host mode, this is up to the external debugger, do nothing. */
if (hub->host_mode)
return 0;
if (!hubdrv->set_output)
return -ENOTSUPP;

10
drivers/hwtracing/intel_th/debug.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub driver debugging
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#include <linux/types.h>

10
drivers/hwtracing/intel_th/debug.h
View File

@ -1,16 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub driver debugging
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 __INTEL_TH_DEBUG_H__

10
drivers/hwtracing/intel_th/gth.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Global Trace Hub
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

10
drivers/hwtracing/intel_th/gth.h
View File

@ -1,16 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub Global Trace Hub (GTH) data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 __INTEL_TH_GTH_H__

14
drivers/hwtracing/intel_th/intel_th.h
View File

@ -1,16 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 __INTEL_TH_H__
@ -50,9 +42,11 @@ struct intel_th_output {
/**
* struct intel_th_drvdata - describes hardware capabilities and quirks
* @tscu_enable: device needs SW to enable time stamping unit
* @host_mode_only: device can only operate in 'host debugger' mode
*/
struct intel_th_drvdata {
unsigned int tscu_enable : 1;
unsigned int tscu_enable : 1,
host_mode_only : 1;
};
#define INTEL_TH_CAP(_th, _cap) ((_th)->drvdata ? (_th)->drvdata->_cap : 0)

10
drivers/hwtracing/intel_th/msu.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Memory Storage Unit
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

10
drivers/hwtracing/intel_th/msu.h
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Memory Storage Unit (MSU) data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 __INTEL_TH_MSU_H__

10
drivers/hwtracing/intel_th/pci.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub pci driver
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

10
drivers/hwtracing/intel_th/pti.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub PTI output driver
*
* Copyright (C) 2014-2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

10
drivers/hwtracing/intel_th/pti.h
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub PTI output data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 __INTEL_TH_STH_H__

10
drivers/hwtracing/intel_th/sth.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Software Trace Hub support
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

10
drivers/hwtracing/intel_th/sth.h
View File

@ -1,16 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub Software Trace Hub (STH) data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 __INTEL_TH_STH_H__

10
drivers/hwtracing/stm/console.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Simple kernel console driver for STM devices
* Copyright (c) 2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* STM console will send kernel messages over STM devices to a trace host.
*/

10
drivers/hwtracing/stm/core.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* System Trace Module (STM) infrastructure
* Copyright (c) 2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/

34
drivers/hwtracing/stm/dummy_stm.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* A dummy STM device for stm/stm_source class testing.
* Copyright (c) 2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/
@ -20,6 +12,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/stm.h>
#include <uapi/linux/stm.h>
static ssize_t notrace
dummy_stm_packet(struct stm_data *stm_data, unsigned int master,
@ -52,6 +45,18 @@ static unsigned int fail_mode;
module_param(fail_mode, int, 0600);
static unsigned int master_min;
module_param(master_min, int, 0400);
static unsigned int master_max = STP_MASTER_MAX;
module_param(master_max, int, 0400);
static unsigned int nr_channels = STP_CHANNEL_MAX;
module_param(nr_channels, int, 0400);
static int dummy_stm_link(struct stm_data *data, unsigned int master,
unsigned int channel)
{
@ -68,14 +73,19 @@ static int dummy_stm_init(void)
if (nr_dummies < 0 || nr_dummies > DUMMY_STM_MAX)
return -EINVAL;
if (master_min > master_max ||
master_max > STP_MASTER_MAX ||
nr_channels > STP_CHANNEL_MAX)
return -EINVAL;
for (i = 0; i < nr_dummies; i++) {
dummy_stm[i].name = kasprintf(GFP_KERNEL, "dummy_stm.%d", i);
if (!dummy_stm[i].name)
goto fail_unregister;
dummy_stm[i].sw_start = 0x0000;
dummy_stm[i].sw_end = 0xffff;
dummy_stm[i].sw_nchannels = 0xffff;
dummy_stm[i].sw_start = master_min;
dummy_stm[i].sw_end = master_max;
dummy_stm[i].sw_nchannels = nr_channels;
dummy_stm[i].packet = dummy_stm_packet;
dummy_stm[i].link = dummy_stm_link;

10
drivers/hwtracing/stm/heartbeat.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Simple heartbeat STM source driver
* Copyright (c) 2016, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* Heartbeat STM source will send repetitive messages over STM devices to a
* trace host.
*/

10
drivers/hwtracing/stm/policy.c
View File

@ -1,16 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* System Trace Module (STM) master/channel allocation policy management
* Copyright (c) 2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* A master/channel allocation policy allows mapping string identifiers to
* master and channel ranges, where allocation can be done.
*/

10
drivers/hwtracing/stm/stm.h
View File

@ -1,16 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* System Trace Module (STM) infrastructure
* Copyright (c) 2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/

10
include/linux/stm.h
View File

@ -1,15 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/*
* System Trace Module (STM) infrastructure apis
* Copyright (C) 2014 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 _STM_H_

13
include/uapi/linux/stm.h
View File

@ -3,15 +3,6 @@
* System Trace Module (STM) userspace interfaces
* Copyright (c) 2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/
@ -21,6 +12,10 @@
#include <linux/types.h>
/* Maximum allowed master and channel values */
#define STP_MASTER_MAX 0xffff
#define STP_CHANNEL_MAX 0xffff
/**
* struct stp_policy_id - identification for the STP policy
* @size: size of the structure including real id[] length