patch-2.4.22 linux-2.4.22/drivers/acpi/ospm/thermal/tz.c
Next file: linux-2.4.22/drivers/acpi/ospm/thermal/tz_osl.c
Previous file: linux-2.4.22/drivers/acpi/ospm/thermal/Makefile
Back to the patch index
Back to the overall index
- Lines: 643
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.21/drivers/acpi/ospm/thermal/tz.c
- Orig date:
2001-10-24 14:06:22.000000000 -0700
diff -urN linux-2.4.21/drivers/acpi/ospm/thermal/tz.c linux-2.4.22/drivers/acpi/ospm/thermal/tz.c
@@ -1,642 +0,0 @@
-/*****************************************************************************
- *
- * Module Name: tz.c
- * $Revision: 44 $
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000, 2001 Andrew Grover
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include <acpi.h>
-#include <bm.h>
-#include "tz.h"
-
-
-#define _COMPONENT ACPI_THERMAL
- MODULE_NAME ("tz")
-
-
-/****************************************************************************
- * Globals
- ****************************************************************************/
-
-extern int TZP;
-
-
-/****************************************************************************
- * Internal Functions
- ****************************************************************************/
-
-/****************************************************************************
- *
- * FUNCTION: tz_print
- *
- ****************************************************************************/
-
-void
-tz_print (
- TZ_CONTEXT *tz)
-{
-#ifdef ACPI_DEBUG
- acpi_buffer buffer;
- u32 i,j = 0;
- TZ_THRESHOLDS *thresholds = NULL;
-
- FUNCTION_TRACE("tz_print");
-
- if (!tz)
- return;
-
- thresholds = &(tz->policy.thresholds);
-
- buffer.length = 256;
- buffer.pointer = acpi_os_callocate(buffer.length);
- if (!buffer.pointer)
- return;
-
- /*
- * Get the full pathname for this ACPI object.
- */
- acpi_get_name(tz->acpi_handle, ACPI_FULL_PATHNAME, &buffer);
-
- /*
- * Print out basic thermal zone information.
- */
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| Thermal_zone[%02x]:[%p] %s\n", tz->device_handle, tz->acpi_handle, (char*)buffer.pointer));
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| temperature[%d] state[%08x]\n", tz->policy.temperature, tz->policy.state));
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| cooling_mode[%08x] polling_freq[%d]\n", tz->policy.cooling_mode, tz->policy.polling_freq));
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| critical[%d]\n", thresholds->critical.temperature));
- if (thresholds->hot.is_valid)
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| hot[%d]\n", thresholds->hot.temperature));
- if (thresholds->passive.is_valid) {
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| passive[%d]: tc1[%d] tc2[%d] tsp[%d]\n", thresholds->passive.temperature, thresholds->passive.tc1, thresholds->passive.tc2, thresholds->passive.tsp));
- if (thresholds->passive.devices.count > 0) {
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| devices"));
- for (j=0; (j<thresholds->passive.devices.count && j<10); j++) {
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "[%02x]", thresholds->passive.devices.handles[j]));
- }
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "\n"));
- }
- }
- for (i=0; i<TZ_MAX_ACTIVE_THRESHOLDS; i++) {
- if (!thresholds->active[i].is_valid)
- break;
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| active[%d]: index[%d]\n", thresholds->active[i].temperature, i));
- if (thresholds->active[i].devices.count > 0) {
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| devices"));
- for (j=0; (j<thresholds->active[i].devices.count && j<10); j++) {
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "[%02x]", thresholds->active[i].devices.handles[j]));
- }
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "\n"));
- }
- }
-
- ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
-
- acpi_os_free(buffer.pointer);
-#endif /*ACPI_DEBUG*/
-
- return;
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_get_temperaturee
- *
- ****************************************************************************/
-
-acpi_status
-tz_get_temperature (
- TZ_CONTEXT *tz)
-{
- acpi_status status = AE_OK;
-
- FUNCTION_TRACE("tz_get_temperature");
-
- if (!tz) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /*
- * Evaluate the _TMP method to get the current temperature.
- */
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_TMP", &(tz->policy.temperature));
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %d d_k\n", tz->policy.temperature));
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_set_cooling_preference
- *
- ****************************************************************************/
-
-acpi_status
-tz_set_cooling_preference (
- TZ_CONTEXT *tz,
- TZ_COOLING_MODE cooling_mode)
-{
- acpi_status status = AE_OK;
- acpi_object_list arg_list;
- acpi_object arg0;
-
- FUNCTION_TRACE("tz_set_cooling_preference");
-
- if (!tz || ((cooling_mode != TZ_COOLING_MODE_ACTIVE) && (cooling_mode != TZ_COOLING_MODE_PASSIVE))) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /*
- * Build the argument list, which simply consists of the current
- * cooling preference.
- */
- memset(&arg_list, 0, sizeof(acpi_object));
- arg_list.count = 1;
- arg_list.pointer = &arg0;
-
- memset(&arg0, 0, sizeof(acpi_object));
- arg0.type = ACPI_TYPE_INTEGER;
- arg0.integer.value = cooling_mode;
-
- /*
- * Evaluate "_SCP" - setting the new cooling preference.
- */
- status = acpi_evaluate_object(tz->acpi_handle, "_SCP", &arg_list, NULL);
- if (ACPI_FAILURE(status)) {
- tz->policy.cooling_mode = -1;
- return_ACPI_STATUS(status);
- }
-
- tz->policy.cooling_mode = cooling_mode;
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_get_thresholds
- *
- ****************************************************************************/
-
-acpi_status
-tz_get_thresholds (
- TZ_CONTEXT *tz)
-{
- acpi_status status = AE_OK;
- TZ_THRESHOLDS *thresholds = NULL;
- u32 value = 0;
- u32 i = 0;
-
- FUNCTION_TRACE("acpi_tz_get_thresholds");
-
- if (!tz) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- thresholds = &(tz->policy.thresholds);
-
- /* Critical Shutdown (required) */
-
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_CRT", &value);
- if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "No critical threshold\n"));
- return_ACPI_STATUS(status);
- }
- else {
- thresholds->critical.temperature = value;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found critical threshold [%d]\n", thresholds->critical.temperature));
-
- }
-
- /* Critical Sleep (optional) */
-
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_HOT", &value);
- if (ACPI_FAILURE(status)) {
- thresholds->hot.is_valid = 0;
- thresholds->hot.temperature = 0;
- }
- else {
- thresholds->hot.is_valid = 1;
- thresholds->hot.temperature = value;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found hot threshold [%d]\n", thresholds->hot.temperature));
- }
-
- /* Passive: Processors (optional) */
-
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_PSV", &value);
- if (ACPI_FAILURE(status)) {
- thresholds->passive.is_valid = 0;
- thresholds->passive.temperature = 0;
- }
- else {
- thresholds->passive.is_valid = 1;
- thresholds->passive.temperature = value;
-
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_TC1", &value);
- if (ACPI_FAILURE(status)) {
- thresholds->passive.is_valid = 0;
- }
- thresholds->passive.tc1 = value;
-
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_TC2", &value);
- if (ACPI_FAILURE(status)) {
- thresholds->passive.is_valid = 0;
- }
- thresholds->passive.tc2 = value;
-
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_TSP", &value);
- if (ACPI_FAILURE(status)) {
- thresholds->passive.is_valid = 0;
- }
- thresholds->passive.tsp = value;
-
- status = bm_evaluate_reference_list(tz->acpi_handle, "_PSL", &(thresholds->passive.devices));
- if (ACPI_FAILURE(status)) {
- thresholds->passive.is_valid = 0;
- }
-
- if (thresholds->passive.is_valid) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found passive threshold [%d]\n", thresholds->passive.temperature));
- }
- else {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid passive threshold\n"));
- }
- }
-
- /* Active: Fans, etc. (optional) */
-
- for (i=0; i<TZ_MAX_ACTIVE_THRESHOLDS; i++) {
-
- char name[5] = {'_','A','C',('0'+i),'\0'};
-
- status = bm_evaluate_simple_integer(tz->acpi_handle, name, &value);
- if (ACPI_FAILURE(status)) {
- thresholds->active[i].is_valid = 0;
- thresholds->active[i].temperature = 0;
- break;
- }
-
- thresholds->active[i].temperature = value;
- name[2] = 'L';
-
- status = bm_evaluate_reference_list(tz->acpi_handle, name, &(thresholds->active[i].devices));
- if (ACPI_SUCCESS(status)) {
- thresholds->active[i].is_valid = 1;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found active threshold [%d]:[%d]\n", i, thresholds->active[i].temperature));
- }
- else {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid active threshold [%d]\n", i));
- }
- }
-
- return_ACPI_STATUS(AE_OK);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_add_device
- *
- ****************************************************************************/
-
-acpi_status
-tz_add_device (
- BM_HANDLE device_handle,
- void **context)
-{
- acpi_status status = AE_OK;
- TZ_CONTEXT *tz = NULL;
- BM_DEVICE *device = NULL;
- acpi_handle tmp_handle = NULL;
- static u32 zone_count = 0;
-
- FUNCTION_TRACE("tz_add_device");
-
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Adding thermal zone [%02x].\n", device_handle));
-
- if (!context || *context) {
- ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Invalid context for device [%02x].\n", device_handle));
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- /*
- * Get information on this device.
- */
- status = bm_get_device_info(device_handle, &device);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /*
- * Allocate a new Thermal Zone device.
- */
- tz = acpi_os_callocate(sizeof(TZ_CONTEXT));
- if (!tz) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- tz->device_handle = device->handle;
- tz->acpi_handle = device->acpi_handle;
-
- /* TBD: How to manage 'uid' when zones are Pn_p? */
- sprintf(tz->uid, "%d", zone_count++);
-
- /*
- * Temperature:
- * ------------
- * Make sure we can read the zone's current temperature (_TMP).
- * If we can't, there's no use in doing any policy (abort).
- */
- status = tz_get_temperature(tz);
- if (ACPI_FAILURE(status))
- goto end;
-
- /*
- * Polling Frequency:
- * ------------------
- * If _TZP doesn't exist use the OS default polling frequency.
- */
- status = bm_evaluate_simple_integer(tz->acpi_handle, "_TZP", &(tz->policy.polling_freq));
- if (ACPI_FAILURE(status)) {
- tz->policy.polling_freq = TZP;
- }
- status = AE_OK;
-
- /*
- * Cooling Preference:
- * -------------------
- * Default to ACTIVE (noisy) cooling until policy decides otherwise.
- * Note that _SCP is optional.
- */
- tz_set_cooling_preference(tz, TZ_COOLING_MODE_ACTIVE);
-
- /*
- * Start Policy:
- * -------------
- * Thermal policy is included in the kernel (this driver) because
- * of the critical role it plays in avoiding nuclear meltdown. =O
- */
- status = tz_policy_add_device(tz);
- if (ACPI_FAILURE(status))
- goto end;
-
- status = tz_osl_add_device(tz);
- if (ACPI_FAILURE(status))
- goto end;
-
- *context = tz;
-
- tz_print(tz);
-
-end:
- if (ACPI_FAILURE(status))
- acpi_os_free(tz);
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_remove_device
- *
- ****************************************************************************/
-
-acpi_status
-tz_remove_device (
- void **context)
-{
- acpi_status status = AE_OK;
- TZ_CONTEXT *tz = NULL;
-
- FUNCTION_TRACE("tz_remove_device");
-
- if (!context || !*context) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- tz = (TZ_CONTEXT*)(*context);
-
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Removing thermal zone [%02x].\n", tz->device_handle));
-
- status = tz_osl_remove_device(tz);
-
- /*
- * Remove Policy:
- * --------------
- * TBD: Move all thermal zone policy to user-mode daemon...
- */
- status = tz_policy_remove_device(tz);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- acpi_os_free(tz);
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- * External Functions
- ****************************************************************************/
-
-/****************************************************************************
- *
- * FUNCTION: tz_initialize
- *
- ****************************************************************************/
-
-acpi_status
-tz_initialize (void)
-{
- acpi_status status = AE_OK;
- BM_DEVICE_ID criteria;
- BM_DRIVER driver;
-
- FUNCTION_TRACE("tz_initialize");
-
- memset(&criteria, 0, sizeof(BM_DEVICE_ID));
- memset(&driver, 0, sizeof(BM_DRIVER));
-
- /*
- * Register driver for thermal zone devices.
- */
- criteria.type = BM_TYPE_THERMAL_ZONE;
-
- driver.notify = &tz_notify;
- driver.request = &tz_request;
-
- status = bm_register_driver(&criteria, &driver);
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_terminate
- *
- ****************************************************************************/
-
-acpi_status
-tz_terminate (void)
-{
- acpi_status status = AE_OK;
- BM_DEVICE_ID criteria;
- BM_DRIVER driver;
-
- FUNCTION_TRACE("tz_terminate");
-
- memset(&criteria, 0, sizeof(BM_DEVICE_ID));
- memset(&driver, 0, sizeof(BM_DRIVER));
-
- /*
- * Unregister driver for thermal zone devices.
- */
- criteria.type = BM_TYPE_THERMAL_ZONE;
-
- driver.notify = &tz_notify;
- driver.request = &tz_request;
-
- status = bm_unregister_driver(&criteria, &driver);
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_notify
- *
- ****************************************************************************/
-
-acpi_status
-tz_notify (
- BM_NOTIFY notify_type,
- BM_HANDLE device_handle,
- void **context)
-{
- acpi_status status = AE_OK;
- TZ_CONTEXT *tz = NULL;
-
- FUNCTION_TRACE("tz_notify");
-
- if (!context) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- tz = (TZ_CONTEXT*)*context;
-
- switch (notify_type) {
-
- case BM_NOTIFY_DEVICE_ADDED:
- status = tz_add_device(device_handle, context);
- break;
-
- case BM_NOTIFY_DEVICE_REMOVED:
- status = tz_remove_device(context);
- break;
-
- case TZ_NOTIFY_TEMPERATURE_CHANGE:
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Temperature (_TMP) change event detected.\n"));
- tz_policy_check(*context);
- status = tz_get_temperature(tz);
- if (ACPI_SUCCESS(status)) {
- status = tz_osl_generate_event(notify_type, tz);
- }
- break;
-
- case TZ_NOTIFY_THRESHOLD_CHANGE:
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Threshold (_SCP) change event detected.\n"));
- status = tz_policy_remove_device(tz);
- if (ACPI_SUCCESS(status)) {
- status = tz_policy_add_device(tz);
- }
- status = tz_osl_generate_event(notify_type, tz);
- break;
-
- case TZ_NOTIFY_DEVICE_LISTS_CHANGE:
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Device lists (_ALx, _PSL, _TZD) change event detected.\n"));
- status = tz_policy_remove_device(tz);
- if (ACPI_SUCCESS(status)) {
- status = tz_policy_add_device(tz);
- }
- status = tz_osl_generate_event(notify_type, tz);
- break;
-
- default:
- status = AE_SUPPORT;
- break;
- }
-
- return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION: tz_request
- *
- ****************************************************************************/
-
-acpi_status
-tz_request (
- BM_REQUEST *request,
- void *context)
-{
- acpi_status status = AE_OK;
- TZ_CONTEXT *tz = NULL;
-
- FUNCTION_TRACE("tz_request");
-
- /*
- * Must have a valid request structure and context.
- */
- if (!request || !context) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
- }
-
- tz = (TZ_CONTEXT*)context;
-
- /*
- * Handle request:
- * ---------------
- */
- switch (request->command) {
-
- default:
- status = AE_SUPPORT;
- break;
- }
-
- request->status = status;
-
- return_ACPI_STATUS(status);
-}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)