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From c60b635637f0baadc4cc937519f11634f5a0d0f8 Mon Sep 17 00:00:00 2001
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From: Sujith Thomas <sujith.thomas@intel.com>
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Date: Tue, 14 Aug 2007 16:23:56 +0800
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Subject: [PATCH] Poulsbo: Thottling support from SMI
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- Generic support for throttling of any component using SMI
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- Memory throttling for Intel platform Poulsbo
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Signed-off-by: Sujith Thomas <sujith.thomas@intel.com>
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drivers/acpi/Kconfig | 13 +++
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drivers/acpi/Makefile | 2 +
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drivers/acpi/smi_device_throttle.c | 108 ++++++++++++++++++++
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drivers/acpi/smi_thermal.c | 193 ++++++++++++++++++++++++++++++++++++
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include/linux/smi_thermal.h | 60 +++++++++++
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5 files changed, 376 insertions(+), 0 deletions(-)
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create mode 100644 drivers/acpi/smi_device_throttle.c
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create mode 100644 drivers/acpi/smi_thermal.c
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create mode 100644 include/linux/smi_thermal.h
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diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
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index c8f50c0..2f65654 100644
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--- a/drivers/acpi/Kconfig
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+++ b/drivers/acpi/Kconfig
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@@ -189,6 +189,19 @@ config THERMAL_SENSOR
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This driver adds support for AUX trip programming of sensors withing ACPI thermal zones. This is an intel platform specific driver.
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+ tristate "SMI Thermal driver"
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+ depends on ACPI_THERMAL
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+ This driver adds support for AUX trip programming of sensors withing ACPI thermal zones. This is an intel platform specific driver.
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+config SMI_DEVICE_THROTTLE
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+ tristate "SMI Device Throttle Driver"
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+ depends on SMI_THERMAL
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+ This driver adds support for throttling of device based on SMI. This is an intel platform specific driver.
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diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
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index 4cda36c..84252a3 100644
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--- a/drivers/acpi/Makefile
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+++ b/drivers/acpi/Makefile
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@@ -52,7 +52,9 @@ obj-$(CONFIG_ACPI_POWER) += power.o
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obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
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obj-$(CONFIG_ACPI_CONTAINER) += container.o
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obj-$(CONFIG_ACPI_THERMAL) += thermal.o
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+obj-$(CONFIG_SMI_THERMAL) += smi_thermal.o
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obj-$(CONFIG_THERMAL_SENSOR) += thermal_sensor.o
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+obj-$(CONFIG_SMI_DEVICE_THROTTLE)+= smi_device_throttle.o
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obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o
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obj-$(CONFIG_ACPI_DEBUG) += debug.o
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obj-$(CONFIG_ACPI_NUMA) += numa.o
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diff --git a/drivers/acpi/smi_device_throttle.c b/drivers/acpi/smi_device_throttle.c
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index 0000000..f0d3861
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+++ b/drivers/acpi/smi_device_throttle.c
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+ * smi_device_throttle.c - SMI Device Throttle Driver ($Revision: 1 $)
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+ * Copyright (C) 2006, 2007 Sujith Thomas <sujith.thomas@intel.com>
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+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; version 2 of the License.
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program; if not, write to the Free Software Foundation, Inc.,
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+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/init.h>
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+#include <linux/types.h>
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+#include <linux/pci.h>
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+#include <linux/pm.h>
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+#include <linux/smi_thermal.h>
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+MODULE_AUTHOR("Sujith Thomas");
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+MODULE_DESCRIPTION("SMI throttle driver");
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+MODULE_LICENSE("GPL");
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+/*No:of devices using SMI interface for throttling*/
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+#define SMI_THERMAL_DEVICE_COUNT 1
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+/*Port and data associated with each device*/
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+static struct smi_thermal_info smi_thermal_device_info[SMI_THERMAL_DEVICE_COUNT]
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+ .setthrottlelimit = 0xDC,
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+ .getthrottlelimit = 0xDD,
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+ .getmaxthrottle = 0xDD,
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+ .caps = DEVICE_CAPS_SW_PGM_THERMAL_EVENTS,
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+ .class = THERMAL_MEM_CLASS,
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+static int __init smi_devices_init(void)
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+ struct thermal_device_ops *ops;
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+ /*Query the ops interface from smi thermal driver*/
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+ ops = smi_get_thermalops();
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+ for (i = 0; i < SMI_THERMAL_DEVICE_COUNT; i++) {
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+ smi_thermal_device_info[i].driver.ops = ops;
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+ /*Register component driver with thermal zone driver*/
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+ thermal_register_device_driver(&smi_thermal_device_info[i].
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+ /*Register singleton device with thermal zone driver*/
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+ (smi_thermal_device_info[i].td =
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+ thermal_register_device(smi_thermal_device_info[i].
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+ smi_thermal_device_info[i].
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+ &smi_thermal_device_info[i]))) {
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+ thermal_unregister_device_driver
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+ (&smi_thermal_device_info[i].driver);
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+static void __exit smi_devices_exit(void)
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+ for (i = 0; i < SMI_THERMAL_DEVICE_COUNT; i++) {
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+ thermal_unregister_device(smi_thermal_device_info[i].td);
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+ thermal_unregister_device_driver(&smi_thermal_device_info[i].
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+module_init(smi_devices_init);
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+module_exit(smi_devices_exit);
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+MODULE_ALIAS("smi_device_throttle");
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diff --git a/drivers/acpi/smi_thermal.c b/drivers/acpi/smi_thermal.c
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index 0000000..21e8e30
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+++ b/drivers/acpi/smi_thermal.c
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+ * smi_thermal.c - SMI thermal Driver ($Revision: 1 $)
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+ * Copyright (C) 2006, 2007 Sujith Thomas <sujith.thomas@intel.com>
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+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; version 2 of the License.
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program; if not, write to the Free Software Foundation, Inc.,
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+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/init.h>
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+#include <linux/types.h>
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+#include <linux/pci.h>
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+#include <linux/delay.h>
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+#include <linux/smi_thermal.h>
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+MODULE_AUTHOR("Sujith Thomas");
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+MODULE_DESCRIPTION("SMI Device Throttle Driver");
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+MODULE_LICENSE("GPL");
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+ * getmaxthrottlestate
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+ * -----------------------------
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+ * call back function for getting the device's maximum throttle limit
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+ * sinfo : smi_thermal_info
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+static int get_max_throttle_limit(struct smi_thermal_info *sinfo)
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+ int maxthrottlestate;
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+ outb(sinfo->maxdat, sinfo->dataport);
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+ outb(sinfo->getmaxthrottle, sinfo->cmdport);
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+ maxthrottlestate = inb(sinfo->dataport);
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+ return maxthrottlestate;
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+ * smi_thermal_device_get_throttle_limit
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+ * -----------------------------
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+ * call back function for getting the device's current throttle limit
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+ * data : smi_thermal_info
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+ * buf : sysfs buffer that needs to be filled back
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+static int smi_thermal_device_get_throttle_limit(void *data, char *buf)
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+ int throttlevalue = 0;
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+ struct smi_thermal_info *sinfo = (struct smi_thermal_info *)data;
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+ outb(sinfo->getdat, sinfo->dataport);
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+ outb(sinfo->getthrottlelimit, sinfo->cmdport);
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+ throttlevalue = inb(sinfo->dataport);
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+ s += sprintf(s, "%d\n", throttlevalue);
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+ * smi_thermal_device_set_throttle_limit
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+ * -----------------------------
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+ * call back function for setting the device's new throttle limit
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+ * data : smi_thermal_info
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+ * buf : sysfs buffer that contains the new value
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+static int smi_thermal_device_set_throttle_limit(enum throttle_set_type type,
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+ void *data, const char *buf)
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+ int maxthrottlestate = 0;
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+ struct smi_thermal_info *sinfo = (struct smi_thermal_info *)data;
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+ /*Only absolute value throttling is supported for time being*/
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+ if (THROTTLE_ABS != type)
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+ maxthrottlestate = get_max_throttle_limit(sinfo);
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+ new_state = simple_strtol(buf, NULL, 0);
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+ /* we need to check if state is <= max */
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+ if (new_state >= maxthrottlestate || new_state < 0) {
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+ /*Write new value*/
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+ outb(new_state, sinfo->dataport);
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+ outb(sinfo->setthrottlelimit, sinfo->cmdport);
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+ * smi_thermal_device_get_throttle_limit
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+ * -----------------------------
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+ * call back function for getting the device's maximum throttle limit
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+ * data : smi_thermal_info
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+ * buf : sysfs buffer that needs to be filled back
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+static int smi_thermal_device_get_maxthrottle_limit(void *data, char *buf)
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+ int maxthrottlestate = 0;
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+ struct smi_thermal_info *sinfo = (struct smi_thermal_info *)data;
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+ maxthrottlestate = get_max_throttle_limit(sinfo);
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+ s += sprintf(s, "%d\n", maxthrottlestate);
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+ * smi_thermal_device_get_caps
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+ * -----------------------------
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+ * call back function for getting the device's capabilities
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+ * data : smi_thermal_info
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+ * buf : sysfs buffer that needs to be filled back
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+static int smi_thermal_device_get_caps(void *data, char *buf)
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+ struct smi_thermal_info *sinfo = NULL;
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+ if (NULL == data || NULL == buf)
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+ sinfo = (struct smi_thermal_info *)data;
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+ s += sprintf(buf, "%lu \n", sinfo->caps);
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+static struct thermal_device_ops smi_thermal_ops = {
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+ .getthrottlelimit = smi_thermal_device_get_throttle_limit,
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+ .setthrottlelimit = smi_thermal_device_set_throttle_limit,
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+ .getmaxthrottlelimit = smi_thermal_device_get_maxthrottle_limit,
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+ .getcaps = smi_thermal_device_get_caps,
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+ * smi_get_thermalops
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+ * -------------------
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+ * Interface for other drivers which uses SMI for throttling
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+struct thermal_device_ops *smi_get_thermalops(void)
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+ return &smi_thermal_ops;
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+EXPORT_SYMBOL(smi_get_thermalops);
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+static int __init smi_thermal_init(void)
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+static void __exit smi_thermal_exit(void)
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+module_init(smi_thermal_init);
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+module_exit(smi_thermal_exit);
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+MODULE_ALIAS("smi_thermal");
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diff --git a/include/linux/smi_thermal.h b/include/linux/smi_thermal.h
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index 0000000..ba428ad
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+++ b/include/linux/smi_thermal.h
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+* smi_thermal.h - Generic smi driver for thermal extensions ($Revision: 1 $)
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+* Copyright (C) 2006, 2007 Sujith Thomas <sujith.thomas@intel.com>
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+* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+* This program is free software; you can redistribute it and/or modify
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+* it under the terms of the GNU General Public License as published by
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+* the Free Software Foundation; version 2 of the License.
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+* This program is distributed in the hope that it will be useful, but
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+* WITHOUT ANY WARRANTY; without even the implied warranty of
390
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+* General Public License for more details.
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+* You should have received a copy of the GNU General Public License along
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+* with this program; if not, write to the Free Software Foundation, Inc.,
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+* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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+* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+#include <linux/thermal.h>
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+#define SMI_MAX_THROTTLE_LIMIT 8
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+struct smi_thermal_info {
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+ /*ACPI device name (eg:- TZ00)*/
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+ char name[ACPI_MAX_CHAR];
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+ /*Command port for SMI driver*/
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+ unsigned int cmdport;
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+ /*Data port for SMI driver*/
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+ unsigned int dataport;
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+ /*Command code for set new throttle limit*/
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+ unsigned int setthrottlelimit;
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+ /*Command code for get current throttle limit*/
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+ unsigned int getthrottlelimit;
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+ /*Command code for get max throttle limit*/
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+ unsigned int getmaxthrottle;
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+ /*Argument passed for getting max throttle limit*/
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+ unsigned int maxdat;
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+ /*Argument passed for getting current throttle limit*/
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+ unsigned int getdat;
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+ /*Device capabilities*/
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+ unsigned long caps;
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+ struct thermal_device *td;
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+ struct thermal_device_driver driver;
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+ * smi_get_thermalops
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+ * -------------------
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+ * Interface for other drivers which uses SMI for throttling
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+ * for getting the callback functions
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+struct thermal_device_ops *smi_get_thermalops(void);
added
removed
debian/binary-custom.d/lpia/patchset/0006-Thermal-Poulsbo-Thottling-support-from-SMI.patch
