-
Notifications
You must be signed in to change notification settings - Fork 20
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Change-Id: Ibf4483f4875340b755f172201e7ff4e8f8ae5557 Original-Change-Id: I929f613a0574a982f414a79ca8cbc1580d36118e Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/30918 Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com> Reviewed-by: Gregory S. Still <stillgs@us.ibm.com> Reviewed-by: Thi N. Tran <thi@us.ibm.com> Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com> Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55820 Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>
- Loading branch information
Showing
1 changed file
with
173 additions
and
0 deletions.
There are no files selected for viewing
173 changes: 173 additions & 0 deletions
173
src/import/chips/p9/procedures/hwp/pm/p9_query_cache_access_state.C
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,173 @@ | ||
/* IBM_PROLOG_BEGIN_TAG */ | ||
/* This is an automatically generated prolog. */ | ||
/* */ | ||
/* $Source: src/import/chips/p9/procedures/hwp/pm/p9_query_cache_access_state.C $ */ | ||
/* */ | ||
/* OpenPOWER sbe Project */ | ||
/* */ | ||
/* Contributors Listed Below - COPYRIGHT 2016,2018 */ | ||
/* [+] 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_query_cache_access_state.C | ||
/// @brief Check the stop level for the EX caches and sets boolean scomable parameters | ||
/// | ||
// *HWP HWP Owner: Christina Graves <clgraves@us.ibm.com> | ||
// *HWP Backup HWP Owner: Greg Still <stillgs@us.ibm.com> | ||
// *HWP FW Owner: Sangeetha T S <sangeet2@in.ibm.com> | ||
// *HWP Team: PM | ||
// *HWP Level: 2 | ||
// *HWP Consumed by: FSP:HS:SBE | ||
/// | ||
/// | ||
/// | ||
/// @verbatim | ||
/// High-level procedure flow: | ||
/// - For the quad target, read the Stop State History register in the PPM | ||
/// and use the actual stop level to determine if the quad has power and is being | ||
/// clocked. | ||
/// @endverbatim | ||
/// | ||
//------------------------------------------------------------------------------ | ||
|
||
|
||
// ---------------------------------------------------------------------- | ||
// Includes | ||
// ---------------------------------------------------------------------- | ||
|
||
#include <p9_quad_scom_addresses.H> | ||
#include <p9_query_cache_access_state.H> | ||
|
||
// ---------------------------------------------------------------------- | ||
// Constants | ||
// ---------------------------------------------------------------------- | ||
|
||
const uint32_t eq_clk_l2_pos[] = {8, 9}; | ||
const uint32_t eq_clk_l3_pos[] = {6, 7}; | ||
const uint32_t SSH_REG_STOP_LEVEL = 8; | ||
const uint32_t SSH_REG_STOP_LEVEL_LEN = 4; | ||
|
||
// ---------------------------------------------------------------------- | ||
// Procedure Function | ||
// ---------------------------------------------------------------------- | ||
|
||
fapi2::ReturnCode | ||
p9_query_cache_access_state( | ||
const fapi2::Target<fapi2::TARGET_TYPE_EQ>& i_target, | ||
bool& o_l2_is_scomable, | ||
bool& o_l2_is_scannable, | ||
bool& o_l3_is_scomable, | ||
bool& o_l3_is_scannable) | ||
{ | ||
fapi2::buffer<uint64_t> l_qsshsrc; | ||
uint32_t l_quadStopLevel = 0; | ||
fapi2::buffer<uint64_t> l_data64; | ||
bool l_is_scomable = 1; | ||
uint8_t l_chpltNumber = 0; | ||
uint32_t l_exPos = 0; | ||
uint8_t l_execution_platform = 0; | ||
uint32_t l_stop_state_reg = 0; | ||
const fapi2::Target<fapi2::TARGET_TYPE_SYSTEM> FAPI_SYSTEM; | ||
|
||
FAPI_INF("> p9_query_cache_access_state..."); | ||
|
||
//Get the stop state from the SSHRC in the EQPPM | ||
//First figure out whether we should use the C_PPM_SSHFSP (if FSP platform) or C_PPM_SSHHYP (if HOST platform) | ||
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_EXECUTION_PLATFORM, FAPI_SYSTEM, l_execution_platform), | ||
"Error: Failed to get platform"); | ||
|
||
if (l_execution_platform == 0x02) | ||
{ | ||
l_stop_state_reg = C_PPM_SSHFSP; | ||
} | ||
else | ||
{ | ||
l_stop_state_reg = C_PPM_SSHHYP; | ||
} | ||
|
||
FAPI_TRY(fapi2::getScom(i_target, l_stop_state_reg, l_qsshsrc), "Error reading data from QPPM SSHSRC"); | ||
|
||
//A unit is scommable if clocks are running | ||
//A unit is scannable if the unit is powered up | ||
|
||
//Extract the core stop state | ||
l_qsshsrc.extractToRight<uint32_t>(l_quadStopLevel, SSH_REG_STOP_LEVEL, SSH_REG_STOP_LEVEL_LEN); | ||
|
||
FAPI_DBG("EQ Stop State: EQ(%d)", l_quadStopLevel); | ||
|
||
//Set all attribtes to 1, then clear them based on the stop state | ||
o_l2_is_scomable = 1; | ||
o_l2_is_scannable = 1; | ||
o_l3_is_scomable = 1; | ||
o_l3_is_scannable = 1; | ||
|
||
// STOP8 - Half Quad Deep Sleep | ||
// VSU, ISU are powered off | ||
// IFU, LSU are powered off | ||
// PC, Core EPS are powered off | ||
// L20-EX0 is clocked off if both cores are >= 8 | ||
// L20-EX1 is clocked off if both cores are >= 8 | ||
if (l_quadStopLevel >= 8) | ||
{ | ||
o_l2_is_scomable = 0; | ||
} | ||
|
||
// STOP9 - Fast Winkle (lab use only) | ||
// Both cores and cache are clocked off | ||
if (l_quadStopLevel >= 9) | ||
{ | ||
o_l3_is_scomable = 0; | ||
} | ||
|
||
// STOP11 - Deep Winkle | ||
// Both cores and cache are powered off | ||
if (l_quadStopLevel >= 11) | ||
{ | ||
o_l2_is_scannable = 0; | ||
o_l3_is_scannable = 0; | ||
} | ||
|
||
//Read clock status to confirm stop state history is accurate | ||
//If we trust the stop state history, this could be removed to save on code size | ||
//Compare Hardware status vs stop state status. If there is a mismatch the HW value overrides the stop state | ||
|
||
FAPI_TRY(fapi2::getScom(i_target, EQ_CLOCK_STAT_SL, l_data64), "Error reading data from EQ_CLOCK_STAT_SL"); | ||
|
||
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_UNIT_POS, i_target, l_chpltNumber), | ||
"Error: Failed to get the position of the EX:0x%08X", i_target); | ||
l_exPos = l_chpltNumber % 2; | ||
|
||
l_is_scomable = !l_data64.getBit(eq_clk_l2_pos[l_exPos]); | ||
|
||
if (o_l2_is_scomable != l_is_scomable) | ||
{ | ||
FAPI_INF("Clock status didn't match stop state, overriding is_scomable status"); | ||
o_l2_is_scomable = l_is_scomable; | ||
} | ||
|
||
l_is_scomable = !l_data64.getBit(eq_clk_l3_pos[l_exPos]); | ||
|
||
if (o_l3_is_scomable != l_is_scomable) | ||
{ | ||
FAPI_INF("Clock status didn't match stop state, overriding is_scomable status"); | ||
o_l3_is_scomable = l_is_scomable; | ||
} | ||
|
||
fapi_try_exit: | ||
FAPI_INF("< p9_query_cache_access_state..."); | ||
return fapi2::current_err; | ||
} |