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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/cache/p9_l2err_linedelete.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2016,2017 */
/* [+] 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 */
//------------------------------------------------------------------------------
// *|
// *! TITLE : p9_l2err_linedelete.C
// *! DESCRIPTION : Delete the L2 error cache line according to the error extraction information.
// *!
// *! OWNER NAME : Chen Qian Email: qianqc@cn.ibm.com
// *!
// *! ADDITIONAL COMMENTS :
// *! See header file for additional comments.
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <p9_l2err_linedelete.H>
#include <p9_quad_scom_addresses.H>
#include <p9_quad_scom_addresses_fld.H>
//------------------------------------------------------------------------------
// Constant definitions
//------------------------------------------------------------------------------
const uint32_t BUSY_POLL_DELAY_IN_NS = 10000000; // 10ms
const uint32_t BUSY_POLL_DELAY_IN_CYCLES = 20000000; // 10ms, assumming 2GHz
extern "C"
{
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// HWP entry point
//------------------------------------------------------------------------------
fapi2::ReturnCode p9_l2err_linedelete(const fapi2::Target<fapi2::TARGET_TYPE_EX>& i_target,
const p9_l2err_extract_err_data& i_err_data,
const uint64_t p9_l2err_linedelete_TryBusyCounts)
{
uint8_t member = 0;
uint8_t bank = 0;
uint16_t cgc = 0;
uint64_t busy_reg_counter = 0;
fapi2::buffer<uint64_t> l_l2_l2cerrs_prd_purge_cmd_reg;
bool reg_busy = 0;
bool prd_purge_busy = 1;
// mark function entry
FAPI_DBG("Entering p9_l2err_linedelete...");
// +---------------------------+
// | L2 Line Delete Scom |
// +---------------------------+
// |Bit(s)| Data |
// +------+--------------------+
// | 0 | Trigger |
// +------+--------------------+
// | 1:4 | Purge type (LD=0x2)|
// +------+--------------------+
// | 5:16 | Don't care |
// +------+--------------------+
// |17:19 | Member |
// +------+--------------------+
// |20:27 | CGC addr 48:55 |
// +------+--------------------+
// | 28 | Bank |
// +------+--------------------+
// |29:30 | Don't care |
// +------+--------------------+
member = i_err_data.member;
bank = i_err_data.bank;
cgc = i_err_data.address;
// Write member, cgc address and bank into PRD Purge Engine Command Register
// SCOM Addr: 0x000000001001080E
// bit 0 is the trigger, the act of writing this bit to 1 sets off the line delete
// bits 1:4 is ttype 0b0010 = line delete
// bits 17:19 is the member
// bits 20:27 is the cgc address
// bit 28 is the bank
FAPI_DBG("p9_l2err_linedelete_TryBusyCounts: %ld", p9_l2err_linedelete_TryBusyCounts);
// wait reg_busy bit for a max counter time which is defined by user
do
{
FAPI_TRY(fapi2::getScom(i_target, EX_PRD_PURGE_CMD_REG, l_l2_l2cerrs_prd_purge_cmd_reg),
"Error from getScom (l_l2_l2cerrs_prd_purge_cmd_reg)");
FAPI_DBG("l_l2_l2cerrs_prd_purge_cmd_reg_data: %#lx", l_l2_l2cerrs_prd_purge_cmd_reg);
// get the reg_busy bit from scom register
l_l2_l2cerrs_prd_purge_cmd_reg.extractToRight<EX_PRD_PURGE_CMD_REG_BUSY, 1>(reg_busy);
if (reg_busy == 0)
{
prd_purge_busy = 0;
break;
}
else
{
busy_reg_counter = busy_reg_counter + 1;
FAPI_DBG("reg_busy = %u, wait for 10ms and try again, remaining cout: %u!",
reg_busy, busy_reg_counter);
// Delay for 10ms
fapi2::delay(BUSY_POLL_DELAY_IN_NS, BUSY_POLL_DELAY_IN_CYCLES);
}
}
while (busy_reg_counter < p9_l2err_linedelete_TryBusyCounts);
// if the reg_busy is still 1 during the counter time
// error occurs
FAPI_ASSERT(!prd_purge_busy,
fapi2::P9_L2ERR_LINE_DELETE_REG_BUSY().
set_TARGET(i_target),
"Error: PRD_PURGE_CMD_REG_BUSY indicats the ie completion bit was not set yet.");
FAPI_DBG("reg_busy = %u", reg_busy);
// if reg_busy is 0
// write trigger, type, cgc address and bank into PRD Purge Engine Command Register
if (reg_busy == 0)
{
l_l2_l2cerrs_prd_purge_cmd_reg.insertFromRight<EX_PRD_PURGE_CMD_REG_MEM, EX_PRD_PURGE_CMD_REG_MEM_LEN>(member);
l_l2_l2cerrs_prd_purge_cmd_reg.insertFromRight<EX_PRD_PURGE_CMD_REG_CGC, EX_PRD_PURGE_CMD_REG_CGC_LEN>(cgc);
l_l2_l2cerrs_prd_purge_cmd_reg.insertFromRight<EX_PRD_PURGE_CMD_REG_BANK, 1>(bank);
l_l2_l2cerrs_prd_purge_cmd_reg.insertFromRight<EX_PRD_PURGE_CMD_REG_TRIGGER, 1>(1);
l_l2_l2cerrs_prd_purge_cmd_reg.insertFromRight<EX_PRD_PURGE_CMD_REG_TYPE, EX_PRD_PURGE_CMD_REG_TYPE_LEN>(0x2);
FAPI_DBG("l_l2_l2cerrs_prd_purge_cmd_reg_data: %#lx", l_l2_l2cerrs_prd_purge_cmd_reg);
FAPI_TRY(fapi2::putScom(i_target, EX_PRD_PURGE_CMD_REG, l_l2_l2cerrs_prd_purge_cmd_reg),
"Error from putScom (l_l2_l2cerrs_prd_purge_cmd_reg)");
// poll the busy bit again to ensure the purge completed
do
{
FAPI_TRY(fapi2::getScom(i_target, EX_PRD_PURGE_CMD_REG, l_l2_l2cerrs_prd_purge_cmd_reg),
"Error from getScom (l_l2_l2cerrs_prd_purge_cmd_reg)");
FAPI_DBG("l_l2_l2cerrs_prd_purge_cmd_reg_data: %#lx", l_l2_l2cerrs_prd_purge_cmd_reg);
// get the reg_busy bit from scom register
l_l2_l2cerrs_prd_purge_cmd_reg.extractToRight<EX_PRD_PURGE_CMD_REG_BUSY, 1>(reg_busy);
if (reg_busy == 0)
{
prd_purge_busy = 0;
break;
}
else
{
busy_reg_counter = busy_reg_counter + 1;
FAPI_DBG("reg_busy = %u, wait for 10ms and try again, remaining cout: %u!",
reg_busy, busy_reg_counter);
// Delay for 10ms
fapi2::delay(BUSY_POLL_DELAY_IN_NS, BUSY_POLL_DELAY_IN_CYCLES);
}
}
while (busy_reg_counter < p9_l2err_linedelete_TryBusyCounts);
// if the reg_busy is still 1 during the counter time
// error occurs
FAPI_ASSERT(!prd_purge_busy,
fapi2::P9_L2ERR_LINE_DELETE_REG_BUSY().
set_TARGET(i_target),
"Error: PRD_PURGE_CMD_REG_BUSY indicats the ie completion bit was not set yet, the PRD Purge Engine Command Register written failed.");
FAPI_DBG("Writing PRD Purge Engine Command Register busy bit status, reg_busy = %u", reg_busy);
//poll the busy bit completed
}
// mark HWP exit
fapi_try_exit:
FAPI_INF("Exiting p9_l2err_linedelete...");
return fapi2::current_err;
} // p9_l2err_extract
} // extern "C
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