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p9_pm_reset.C
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p9_pm_reset.C
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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/pm/p9_pm_reset.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2017 */
/* [+] 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 */
///
/// @file p9_pm_reset.C
/// @brief Wrapper that calls underlying HWPs to perform a Power Management
/// Reset function when needing to restart the OCC complex.
///
// *HWP HWP Owner : Greg Still <stillgs@us.ibm.com>
// *HWP HWP Backup Owner :
// *HWP FW Owner : Sangeetha T S <sangeet2@in.ibm.com>
// *HWP Team : PM
// *HWP Level : 2
// *HWP Consumed by : HS
///
/// High-level procedure flow:
///
/// @verbatim
///
/// - Mask the OCC FIRs
/// - Halt and then Reset the PPC405
/// - Put all EX chiplets in special wakeup
/// - Mask PBA, PPM and CME FIRs
/// - Reset OCC, PSTATE and STOP GPEs
/// - Reset the Cores and Quads
/// - Reset OCB
/// - Reset PSS
///
/// @endverbatim
///
// -----------------------------------------------------------------------------
// Includes
// -----------------------------------------------------------------------------
#include <p9_pm_reset.H>
#include <p9_pm_utils.H>
// -----------------------------------------------------------------------------
// Constant definitions
// -----------------------------------------------------------------------------
// -----------------------------------------------------------------------------
// Global variables
// -----------------------------------------------------------------------------
// -----------------------------------------------------------------------------
// Constant Defintions
// -----------------------------------------------------------------------------
enum PPM_MASK
{
CME_FIRMASK = 0xFFFFFFFF,
CORE_ERRMASK = 0xFFFFFFFF,
QUAD_ERRMASK = 0xFFFFFFFF
};
// -----------------------------------------------------------------------------
// Function prototypes
// -----------------------------------------------------------------------------
///
/// @brief Clear the Deep Exit Masks
///
/// @param[in] i_target Chip target
///
/// @return FAPI2_RC_SUCCESS If the special wake-up is successful,
/// else error code.
///
fapi2::ReturnCode clear_deep_exit_mask(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target);
// -----------------------------------------------------------------------------
// Function definitions
// -----------------------------------------------------------------------------
fapi2::ReturnCode p9_pm_reset(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target)
{
FAPI_IMP("Entering p9_pm_reset ...");
fapi2::buffer<uint64_t> l_data64;
fapi2::ReturnCode l_rc;
// ************************************************************************
// Mask the OCC FIRs as errors can occur in what follows
// ************************************************************************
FAPI_DBG("Executing p9_pm_occ_firinit for masking errors in reset operation.");
FAPI_EXEC_HWP(l_rc, p9_pm_occ_firinit, i_target, p9pm::PM_RESET);
FAPI_TRY(l_rc, "ERROR: Failed to mask OCC FIRs.");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After masking FIRs"));
// Clear the OCC's PIB I2C engine locks.
// All other OCC owned flag bits are retained.
l_data64.setBit<17>().setBit<19>().setBit<21>();
FAPI_TRY(fapi2::putScom(i_target, PU_OCB_OCI_OCCFLG_SCOM1, l_data64),
"ERROR: Failed to write to OCC FLAG");
// ************************************************************************
// Halt the OCC PPC405 and reset it safely
// ************************************************************************
FAPI_DBG("Executing p9_pm_occ_control to put OCC PPC405 into reset safely.");
FAPI_EXEC_HWP(l_rc, p9_pm_occ_control,
i_target,
p9occ_ctrl::PPC405_RESET_SEQUENCE, //Operation on PPC405
p9occ_ctrl::PPC405_BOOT_NULL); // Boot instruction location
FAPI_TRY(l_rc, "ERROR: Failed to reset OCC PPC405");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After safe reset of OCC PPC405"));
// ************************************************************************
// Put all EX chiplets in special wakeup
// ************************************************************************
FAPI_DBG("Enable special wakeup for all functional EX targets.");
FAPI_TRY(special_wakeup_all(i_target,
true),//Enable splwkup
"ERROR: Failed to remove EX chiplets from special wakeup");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After EX in special wakeup"));
// ************************************************************************
// Mask the PBA & CME FIRs as errors can occur in what follows
// ************************************************************************
FAPI_DBG("Executing p9_pm_firinit for masking errors in reset operation.");
FAPI_EXEC_HWP(l_rc, p9_pm_firinit, i_target, p9pm::PM_RESET);
FAPI_TRY(l_rc, "ERROR: Failed to mask PBA & CME FIRs.");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After masking FIRs"));
// ************************************************************************
// Issue reset to OCC GPEs ( GPE0 and GPE1) (Bring them to HALT)
// ************************************************************************
FAPI_DBG("Executing p9_pm_occ_gpe_init to reset OCC GPE");
FAPI_EXEC_HWP(l_rc, p9_pm_occ_gpe_init,
i_target,
p9pm::PM_RESET,
p9occgpe::GPEALL // Apply to both OCC GPEs
);
FAPI_TRY(l_rc, "ERROR: Failed to reset the OCC GPEs");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After reset of OCC GPEs"));
// ************************************************************************
// Reset the PSTATE GPE (Bring it to HALT)
// ************************************************************************
FAPI_DBG("Executing p9_pm_pstate_gpe_init to reset PGPE");
/* TODO: RTC 157096 - Enable once the procedure is available
FAPI_EXEC_HWP(l_rc, p9_pm_pstate_gpe_init, i_target, p9pm::PM_RESET);
FAPI_TRY(l_rc, "ERROR: Failed to reset PGPE");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After reset of PGPE"));
*/
// ************************************************************************
// Reset the STOP GPE (Bring it to HALT)
// ************************************************************************
FAPI_DBG("Executing p9_pm_stop_gpe_init to reset SGPE");
FAPI_EXEC_HWP(l_rc, p9_pm_stop_gpe_init, i_target, p9pm::PM_RESET);
FAPI_TRY(l_rc, "ERROR: Failed to reset SGPE");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After reset of SGPE"));
// ************************************************************************
// Reset Cores and Quads
// ************************************************************************
FAPI_DBG("Executing p9_pm_corequad_init to reset cores & quads");
FAPI_EXEC_HWP(l_rc, p9_pm_corequad_init,
i_target,
p9pm::PM_RESET,
CME_FIRMASK, // CME FIR MASK
CORE_ERRMASK,// Core Error Mask
QUAD_ERRMASK // Quad Error Mask
);
FAPI_TRY(l_rc, "ERROR: Failed to reset cores & quads");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After reset of core quad"));
// ************************************************************************
// Issue reset to OCC-SRAM
// ************************************************************************
FAPI_DBG("Executing p8_occ_sram_init to reset OCC-SRAM");
FAPI_EXEC_HWP(l_rc, p9_pm_occ_sram_init, i_target, p9pm::PM_RESET);
FAPI_TRY(l_rc, "ERROR: Failed to reset OCC SRAM");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After reset of OCC SRAM"));
// ************************************************************************
// Issue reset to OCB
// ************************************************************************
FAPI_DBG("Executing p9_pm_ocb_init to reset OCB");
FAPI_EXEC_HWP(l_rc, p9_pm_ocb_init,
i_target,
p9pm::PM_RESET,
p9ocb::OCB_CHAN0, // Channel
p9ocb::OCB_TYPE_NULL, // Channel type
0, // Base address
0, // Length of circular push/pull queue
p9ocb::OCB_Q_OUFLOW_NULL, // Channel flow control
p9ocb::OCB_Q_ITPTYPE_NULL // Channel interrupt control
);
FAPI_TRY(l_rc, "ERROR: Failed to reset OCB");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After reset of OCB channels"));
// ************************************************************************
// Resets P2S and HWC logic
// ************************************************************************
FAPI_DBG("Executing p9_pm_pss_init to reset P2S and HWC logic");
FAPI_EXEC_HWP(l_rc, p9_pm_pss_init, i_target, p9pm::PM_RESET);
FAPI_TRY(l_rc, "ERROR: Failed to reset PSS & HWC");
FAPI_TRY(p9_pm_glob_fir_trace(i_target, "After reset of PSS"));
fapi_try_exit:
FAPI_IMP("Exiting p9_pm_reset ...");
return fapi2::current_err;
}
///
/// @brief Clear deep exit mask
///
/// @param[in] i_target Chip target
///
/// @return FAPI2_RC_SUCCESS on success, else error.
///
fapi2::ReturnCode clear_deep_exit_mask(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target)
{
FAPI_INF("clear_deep_exit_mask Enter");
return fapi2::FAPI2_RC_SUCCESS;
}