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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/occ_405/amec/amec_oversub.c $ */
/* */
/* OpenPOWER OnChipController Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2011,2017 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
//*************************************************************************/
// Includes
//*************************************************************************/
#include "ssx.h"
#include <occ_common.h>
#include <trac.h>
#include <amec_sys.h>
#include <proc_pstate.h>
#include <dcom.h>
#include <occ_sys_config.h>
#include <amec_service_codes.h>
#include <pgpe_interface.h>
#include <amec_freq.h>
//*************************************************************************/
// Externs
//*************************************************************************/
//*************************************************************************/
// Macros
//*************************************************************************/
//*************************************************************************/
// Defines/Enums
//*************************************************************************/
#define OVERSUB_REASON_DELAY_4MS 16 // 4ms (unit is 250us)
#define OVERSUB_REASON_COUNT_TIMEOUT 2
#define OVERSUB_REASON_DETERMINED 1
//*************************************************************************/
// Structures
//*************************************************************************/
//*************************************************************************/
// Globals
//*************************************************************************/
//*************************************************************************/
// Function Prototypes
//*************************************************************************/
//*************************************************************************/
// Functions
//*************************************************************************/
// Function Specification
//
// Name: amec_oversub_isr
//
// Description: Oversubscription ISR
//
// Task Flags:
//
// Note: This function is only ever called from Critical interrupt context
//
// End Function Specification
void amec_oversub_isr(void)
{
static uint32_t L_isr_count = 0;
static uint8_t L_polarity = SSX_IRQ_POLARITY_ACTIVE_HIGH; // Default is high
uint8_t l_cur_polarity = L_polarity;
L_isr_count++;
// SSX_IRQ_POLARITY_ACTIVE_HIGH means over-subscription is active
if(L_polarity == SSX_IRQ_POLARITY_ACTIVE_HIGH)
{
// oversub only switches pcap in amec_pcap_calc
// throttling only done if actually needed due to reaching power cap
g_amec->oversub_status.oversubReasonLatchCount = OVERSUB_REASON_DELAY_4MS;
// Set oversubPinLive and oversubActiveTime
g_amec->oversub_status.oversubPinLive = 1;
g_amec->oversub_status.oversubActiveTime = ssx_timebase_get();
// Setup the IRQ
ssx_irq_setup(OCCHW_IRQ_EXTERNAL_TRAP,
SSX_IRQ_POLARITY_ACTIVE_LOW,
SSX_IRQ_TRIGGER_LEVEL_SENSITIVE);
L_polarity = SSX_IRQ_POLARITY_ACTIVE_LOW;
}
else // over-subscription is inactive
{
// Clear oversubPinLive
g_amec->oversub_status.oversubPinLive = 0;
// Set oversubInActiveTime
g_amec->oversub_status.oversubInactiveTime = ssx_timebase_get();
// Setup the IRQ
ssx_irq_setup(OCCHW_IRQ_EXTERNAL_TRAP,
SSX_IRQ_POLARITY_ACTIVE_HIGH,
SSX_IRQ_TRIGGER_LEVEL_SENSITIVE);
L_polarity = SSX_IRQ_POLARITY_ACTIVE_HIGH;
}
// Trace Oversub Event, Polarity and ISR count
TRAC_INFO("Oversub IRQ - Polarity (high active):%d, oversubPinLive: %d, count: %d)", l_cur_polarity, g_amec->oversub_status.oversubPinLive, L_isr_count);
}
// Function Specification
//
// Name: amec_oversub_check
//
// Description: Oversubscription check called in amec_slv_common_tasks_pre()
//
// Task Flags:
//
// End Function Specification
void amec_oversub_check(void)
{
errlHndl_t l_errl = NULL;
static BOOLEAN L_prev_ovs_state = FALSE; // oversub happened
// oversubscription condition happened?
if ( AMEC_INTF_GET_OVERSUBSCRIPTION() == TRUE )
{
if ( L_prev_ovs_state != TRUE)
{
L_prev_ovs_state = TRUE;
TRAC_ERR("Oversubscription condition happened");
/* @
* @errortype
* @moduleid AMEC_SLAVE_CHECK_PERFORMANCE
* @reasoncode OVERSUB_ALERT
* @userdata1 Previous OVS State
* @userdata4 ERC_AMEC_SLAVE_OVS_STATE
* @devdesc Oversubscription condition happened
*/
l_errl = createErrl(AMEC_SLAVE_CHECK_PERFORMANCE,//modId
OVERSUB_ALERT, //reasoncode
ERC_AMEC_SLAVE_OVS_STATE, //Extended reason code
ERRL_SEV_INFORMATIONAL, //Severity
NULL, //Trace Buf
DEFAULT_TRACE_SIZE, //Trace Size
L_prev_ovs_state, //userdata1
0); //userdata2
// set the mfg action flag (allows callout to be added to info error)
setErrlActions(l_errl, ERRL_ACTIONS_MANUFACTURING_ERROR);
// add the oversubscription symbolic callout
addCalloutToErrl(l_errl,
ERRL_CALLOUT_TYPE_COMPONENT_ID,
ERRL_COMPONENT_ID_OVERSUBSCRIPTION,
ERRL_CALLOUT_PRIORITY_HIGH);
// Commit Error
commitErrl(&l_errl);
}
}
else
{
if(L_prev_ovs_state)
{
L_prev_ovs_state = FALSE;
TRAC_IMP("Oversubscription condition cleared");
}
}
// Figure out the over-subscription reason
if(g_amec->oversub_status.oversubReasonLatchCount > 1)
{
if( g_amec->oversub_status.oversubReasonLatchCount == OVERSUB_REASON_COUNT_TIMEOUT)
{
g_amec->oversub_status.oversubReason = INDETERMINATE;
g_amec->oversub_status.oversubReasonLatchCount = OVERSUB_REASON_DETERMINED;
TRAC_INFO("Oversub (oversubReason: %d)", g_amec->oversub_status.oversubReason );
}
else
{
// If we can figure out why oversub happened, set oversubReason to valide enum value
// then set oversubReasonLatchCount = 1
// If we can't figure it out, decrease oversubReasonLatchCount and we will try again in 250us
g_amec->oversub_status.oversubReasonLatchCount--; // The unit of oversubReasonLatchCount is 250us
}
}
}
/*----------------------------------------------------------------------------*/
/* End */
/*----------------------------------------------------------------------------*/
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