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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/mmio/runtime/rt_mmio.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2019 */
/* [+] 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 src/usr/mmio/runtime/rt_mmio.C
// @brief Runtime mmio operations -- particularly for scom operations
#include "../mmio.H"
#include <scom/runtime/rt_scomif.H>
#include <devicefw/driverif.H>
#include <errl/errlentry.H>
#include <limits.h>
#include <usr/mmio/mmio_reasoncodes.H>
// Trace definition
trace_desc_t* g_trac_mmio = NULL;
TRAC_INIT(&g_trac_mmio, MMIO_COMP_NAME, 2*KILOBYTE, TRACE::BUFFER_SLOW);
//#define TRACUCOMP(args...) TRACFCOMP(args)
#define TRACUCOMP(args...)
namespace MMIO
{
// Direct OCMB reads and writes to the device's memory mapped memory.
DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
DeviceFW::MMIO,
TARGETING::TYPE_OCMB_CHIP,
ocmbMmioPerformOp);
/*******************************************************************************
*
* See comments in header file
*
*/
errlHndl_t ocmbMmioPerformOp(DeviceFW::OperationType i_opType,
TARGETING::TargetHandle_t i_ocmbTarget,
void* io_buffer,
size_t& io_buflen,
int64_t i_accessType,
va_list i_args)
{
errlHndl_t l_err = nullptr;
uint64_t l_offset = va_arg(i_args, uint64_t);
TRACUCOMP(g_trac_mmio, ENTER_MRK"runtime ocmbMmioPerformOp");
TRACUCOMP(g_trac_mmio, INFO_MRK"op=%d, target=0x%.8X",
i_opType, TARGETING::get_huid(i_ocmbTarget));
TRACUCOMP(g_trac_mmio, INFO_MRK"buffer=%p, length=%d, accessType=%ld",
io_buffer, io_buflen, i_accessType);
TRACUCOMP(g_trac_mmio, INFO_MRK"offset=0x%lX", l_offset);
// Verify offset is within scom mmio range
if ( (l_offset >= (4 * GIGABYTE)) && (l_offset < (6 * GIGABYTE)) )
{
// send message to hypervisor level to do the mmio operation
l_err = SCOM::sendScomToHyp(i_opType, i_ocmbTarget,
l_offset, io_buffer);
}
else
{
// Only Scom range is supported for MMIO runtime context
/*@
* @errortype
* @moduleid MMIO::RT_OCMB_MMIO_PERFORM_OP
* @reasoncode MMIO::RC_INVALID_OFFSET
* @userdata1[0:31] Target huid
* @userdata1[32:63] Data Offset
* @userdata2[0:31] Operation Type
* @userdata2[32:63] Buffer Length
* @devdesc Invalid offset, requested
* address was out of range for a MMIO operation.
* @custdesc Unexpected memory subsystem firmware error.
*/
l_err = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_UNRECOVERABLE,
MMIO::RT_OCMB_MMIO_PERFORM_OP,
MMIO::RC_INVALID_OFFSET,
TWO_UINT32_TO_UINT64(
TARGETING::get_huid(i_ocmbTarget),
l_offset),
TWO_UINT32_TO_UINT64(i_opType, io_buflen),
ERRORLOG::ErrlEntry::ADD_SW_CALLOUT);
}
return l_err;
}
}; // end namespace MMIO
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