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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/centaur/procedures/vpd_accessors/getMBvpdAddrMirrorData.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 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 getMBvpdAddrMirror.C
/// @brief Prototype for getMBvpdAddrMirror()-get Address Mirroring Data from MBvpd
///
/// *HWP HWP Owner: Luke Mulkey <lwmulkey@us.ibm.com>
/// *HWP HWP Backup: Andre Marin <aamarin@us.ibm.com>
/// *HWP Team: Memory
/// *HWP Level: 2
/// *HWP Consumed by: HB
#include <stdint.h>
// fapi2 support
#include <fapi2.H>
#include <getMBvpdAddrMirrorData.H>
#include <fapi2_mbvpd_access.H>
#include <generic/memory/lib/utils/c_str.H>
extern "C"
{
///
/// @brief get Address Mirroring Data from cvpd record VSPD keyword AM
/// @param[in] i_mbaTarget - mba target
/// @param[out] o_val - 2 x 2 array of bytes ([num ports] [num dimms])
/// Address Mirroring 4 bits per dimm returned
/// in the lower nibble of the byte for the mba
///
/// @return fapi::ReturnCode - FAPI_RC_SUCCESS if success,relevant error code for failure.
///
fapi2::ReturnCode getMBvpdAddrMirrorData(
const fapi2::Target<fapi2::TARGET_TYPE_MBA>& i_mbaTarget,
uint8_t (& o_val)[2][2])
{
//AM keyword layout
//The following constants are for readibility. They need to stay in sync
// with the vpd layout.
const uint8_t NUM_MBAS = 2; //There are 2 MBAs per Centaur memory buffer
const uint8_t NUM_PORTS = 2; //Each MBA has 2 ports
struct port_attributes
{
uint8_t iv_dimm ; // bits 0:3 DIMM 0 bits 4:7 DIMM 1
};
struct mba_attributes
{
port_attributes mba_port[NUM_PORTS];
};
struct am_keyword
{
mba_attributes mb_mba[NUM_MBAS];
uint8_t spare[8]; //VPD data CCIN_31E1_v.5.3.ods
};
const uint32_t AM_KEYWORD_SIZE = sizeof(am_keyword); // keyword size
fapi2::Target<fapi2::TARGET_TYPE_MEMBUF_CHIP> l_mbTarget;
uint8_t l_mbaPos = NUM_MBAS; //initialize to out of range value (+1)
am_keyword* l_pMaBuffer = NULL; // MBvpd MT keyword buffer
size_t l_MaBufsize = sizeof(am_keyword);
FAPI_DBG("getMBvpdAddrMirrorData: entry ");
// Determine which VPD format we are using
uint8_t l_customDimm = 0;
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CEN_EFF_CUSTOM_DIMM, i_mbaTarget, l_customDimm),
"getMBvpdAddrMirrorData: Read of Custom Dimm failed");
//if not a custom_dimm then assume ISDIMM
if(fapi2::ENUM_ATTR_CEN_EFF_CUSTOM_DIMM_NO == l_customDimm)
{
// Planar CVPD (==ISDIMM) has no AM keyword, by default there is
// no mirrored data
for (uint8_t l_port = 0; l_port < NUM_PORTS; l_port++)
{
o_val[l_port][0] = 0;
o_val[l_port][1] = 0;
}
return fapi2::current_err;
}
// find the position of the passed mba on the centuar
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_UNIT_POS, i_mbaTarget, l_mbaPos),
" getMBvpdAddrMirrorData: Get MBA position failed ");
FAPI_DBG("getMBvpdAddrMirrorData: mba %s position=%d",
mss::c_str(i_mbaTarget),
l_mbaPos);
// find the Centaur memmory buffer from the passed MBA
l_mbTarget = i_mbaTarget.getParent<fapi2::TARGET_TYPE_MEMBUF_CHIP>();
FAPI_DBG("getMBvpdAddrMirrorData: parent mb path=%s ",
mss::c_str(l_mbTarget) );
// Read the AM keyword field
l_pMaBuffer = new am_keyword;
FAPI_TRY(getMBvpdField(fapi2::MBVPD_RECORD_VSPD,
fapi2::MBVPD_KEYWORD_AM,
l_mbTarget,
reinterpret_cast<uint8_t*>(l_pMaBuffer),
l_MaBufsize),
"getMBvpdAddrMirrorData: Read of AM keyword failed");
// Check that sufficient AM was returned.
FAPI_ASSERT(l_MaBufsize >= AM_KEYWORD_SIZE,
fapi2::CEN_MBVPD_INSUFFICIENT_VPD_RETURNED().
set_KEYWORD(fapi2::MBVPD_KEYWORD_AM).
set_RETURNED_SIZE(l_MaBufsize).
set_CHIP_TARGET(l_mbTarget),
"getMBvpdAddrMirrorData:"
" less AM keyword returned than expected %d < %d",
l_MaBufsize, AM_KEYWORD_SIZE);
// Return the 4 bits of address mirroring data for each
// of the 4 DIMMs for the requested mba from the AM keyword buffer
for (uint8_t l_port = 0; l_port < NUM_PORTS; l_port++)
{
uint8_t l_dimm = l_pMaBuffer->
mb_mba[l_mbaPos].mba_port[l_port].iv_dimm;
o_val[l_port][0] = ((l_dimm & 0xF0) >> 4);
o_val[l_port][1] = l_dimm & 0x0F;
}
if( l_pMaBuffer )
{
delete l_pMaBuffer;
l_pMaBuffer = NULL;
}
FAPI_DBG("getMBvpdAddrMirrorData: exit");
fapi_try_exit:
return fapi2::current_err;
}
} // extern "C"
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