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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/usr/hwpf/hwp/spd_accessors/getSpdAttrAccessor.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2013,2014 */
/* */
/* 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 getSpdAttrAccessor.H
*
* @brief Accessor HWP that gets DDR neutral DIMM SPD FAPI Attributes
*
* Handles DDR neutral attributes where raw SPD data cannot be returned,
* either:
* - The raw data has a different meaning between DDR3 and DDR4.
* - The raw data has a different size between DDR3 and DDR4.
* - The attribute does not map to a single field in both DDR3 and DDR4.
*
* This Accessor HWP reads the DDR specific attribute and figures out the
* data to return for the DDR neutral attribute.
*/
#ifndef _GETSPDDATAACCESSOR_
#define _GETSPDDATAACCESSOR_
#include <fapi.H>
namespace fapi
{
// Attributes supported
namespace getSpdAttr
{
enum Attr
{
SPD_SDRAM_BANKS = 0x01,
SPD_MODULE_NOMINAL_VOLTAGE = 0x02,
SPD_CAS_LATENCIES_SUPPORTED = 0x03,
SPD_MODULE_REVISION_CODE = 0x04,
};
}
}
// function pointer typedef definition for HWP call support
typedef fapi::ReturnCode (*getSpdAttrAccessor_FP_t) (
const fapi::Target &,
const fapi::getSpdAttr::Attr,
void *,
const size_t);
extern "C"
{
/**
* @brief Accessor HWP that gets DDR neutral DIMM SPD FAPI Attribute data
*
* FAPI_ATTR_GET checks at compile time that the user's attribute is the correct
* type. Assuming that the platform routes the access of the attribute to the
* corresponding attribute enum defined in this file (e.g. ATTR_SPD_SDRAM_BANKS
* -> SPD_SDRAM_BANKS) then the size of o_pVal will be correct, in the unlikely
* event of a misroute where the buffer is too small, an error will be returned.
*
* @param[in] i_dimm Reference to DIMM fapi target
* @param[in] i_attr The Attribute to get
* @param[out] o_pVal Pointer to data buffer filled in with attribute data
* @param[in] i_len Size of o_pVal
*
* @return fapi::ReturnCode Indicating success or error
*/
fapi::ReturnCode getSpdAttrAccessor(const fapi::Target & i_dimm,
const fapi::getSpdAttr::Attr i_attr,
void * o_pVal,
const size_t i_len);
}
#endif
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