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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/vpd/vpd.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2014 */
/* [+] 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 */
#ifndef __VPD_H
#define __VPD_H
#include <pnor/pnorif.H>
#include <vpd/vpd_if.H>
namespace VPD
{
/**
* @brief This structure is used to transfer common information needed
* for reading the address from the PNOR RP.
*/
struct pnorInformation
{
uint64_t segmentSize;
uint64_t maxSegments;
PNOR::SectionId pnorSection;
};
/**
* @brief VPD Message Types
*/
enum VPD_MSG_TYPE
{
VPD_WRITE_DIMM = 0x00C1, //< DIMM SPD
VPD_WRITE_PROC = 0x00C2, //< Processor MVPD
VPD_WRITE_MEMBUF = 0x00C3, //< Centaur FRU VPD
};
/**
* @brief Message definition for VPD Write Request
*
* - data0 :
* - [16] VPD Record Number
* - [32] 4-byte ASCII String for record name
* 'XXXX'=Entire VPD section from PNOR
* - [16] 2-byte ASCII String for keyword or offset into SPD
* 'XX'=Entire VPD record
* - data1 :
* - [64] Size of binary data in bytes
* - extra data : Binary VPD Data
*/
union VpdWriteMsg_t
{
uint64_t data0;
struct
{
uint16_t rec_num; //< VPD_REC_NUM
char record[4]; //< ASCII Record Name
union
{
char keyword[2]; //< ASCII Keyword (for IBM VPD)
uint16_t offset; //< Offset into record in bytes (for DIMM SPD)
};
} PACKED;
};
/**
* @brief This function will query the PNOR RP to get the offset of the
* section requested. It will then set global variables to save this
* value away for later use. This function only needs to be called once.
*
* @param[in] i_pnorInfo - Structure of common PNOR information needed to
* query for the sections address.
*
* @param[in/out] io_cachedAddr - This parameter is a gloval variable in the
* calling code. It is the address that is obtained from the PNOR
* RP.
*
* @param[in] i_mutex - The Mutex from the calling code. It is locked when
* the globals are modified.
*
* @return errlHndl_t - NULL if successful, otherwise a pointer to the
* Error log.
*/
errlHndl_t getPnorAddr ( pnorInformation & i_pnorInfo,
uint64_t &io_cachedAddr,
mutex_t * i_mutex );
/**
* @brief This function will read the PNOR at the correct offset and number of
* bytes for the keyword requested.
*
* @param[in] i_byteAddr - The offset to access in the PNOR.
*
* @param[in] i_numBytes - Number of bytes to read.
*
* @param[out] o_data - The data buffer that the read data will be placed
* into.
*
* @param[in] i_target - The chip target to access the data for.
*
* @param[in] i_pnorInfo - Information about the PNOR section that we need to
* know to make the request.
*
* @param[in/out] io_cachedAddr - The address offset to the data chunk in
* PNOR.
*
* @param[in] i_mutex - The mutex to lock/unlock while setting io_isAddrCached
* and io_cachedAddr. It is assumed that those parameters are global
* variables in the code where they reside.
*
* @return errlHndl_t - NULL if successful, otherwise a pointer to the error
* log.
*/
errlHndl_t readPNOR ( uint64_t i_byteAddr,
size_t i_numBytes,
void * o_data,
TARGETING::Target * i_target,
pnorInformation & i_pnorInfo,
uint64_t &io_cachedAddr,
mutex_t* i_mutex );
/**
* @brief This function will write the PNOR at the correct offset and number
* of bytes for the keyword requested.
*
* @param[in] i_byteAddr - The offset to access in the PNOR.
*
* @param[in] i_numBytes - The number of bytes to write.
*
* @param[in] i_data - The data buffer of the data to be written.
*
* @param[in] i_target - The chip target to access the data for.
*
* @param[in] i_pnorInfo - Information about the PNOR section that we need to
* know to make the request.
*
* @param[in/out] io_cachedAddr - The address offset to the data chunk in
* PNOR.
*
* @param[in] i_mutex - The mutex to lock/unlock while setting io_isAddrCached
* and io_cachedAddr. It is assumed that those parameters are global
* variables in the code where they reside.
*
* @return errlHndl_t - NULL if successful, otherwise a pointer to the error
* log.
*/
errlHndl_t writePNOR ( uint64_t i_byteAddr,
size_t i_numBytes,
void * i_data,
TARGETING::Target * i_target,
pnorInformation & i_pnorInfo,
uint64_t &io_cachedAddr,
mutex_t* i_mutex );
/**
* @brief This function handles sending the mailbox message to the Fsp to
* notify of updates to the data.
*
* @param[in] i_numbytes - Number of bytes to read.
*
* @param[in] i_data - The data buffer that will return the data read.
*
* @param[in] i_target - The target to access.
*
* @param[in] i_type - The type of VPD being written.
*
* @param[in] i_record - The rec_num + record/keyword.
*
* @return errlHndl_t - NULL if successful, otherwise a pointer to the error
* log.
*/
errlHndl_t sendMboxWriteMsg ( size_t i_numBytes,
void * i_data,
TARGETING::Target * i_target,
VPD_MSG_TYPE i_type,
VpdWriteMsg_t& i_record );
/**
* @brief This function determines the VPD source (PNOR/SEEPROM)
* from configuration and target state information
*
* @param[in] i_target - Target device.
*
* @param[in] i_rwPnorEnabled - Config value specifying
* whether PNOR reads/writes are enabled for this VPD type
*
* @param[in] i_rwHwEnabled - Config value specifying
* whether SEEPROM reads/writes are enabled for this VPD type
*
* @param[in] i_location - The requested VPD source location
* (PNOR/SEEPROM) from the caller
*
* @param[out] o_source - The resolved VPD source to be accessed
*
* @return errHndl_t - NULL if successful, otherwise a pointer to the
* error log.
*/
bool resolveVpdSource( TARGETING::Target * i_target,
bool i_rwPnorEnabled,
bool i_rwHwEnabled,
vpdCmdTarget i_vpdCmdTarget,
vpdCmdTarget& o_vpdSource );
}; //end VPD namespace
#endif
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