diff options
Diffstat (limited to 'src/usr/mmio/runtime/rt_mmio.C')
| -rw-r--r-- | src/usr/mmio/runtime/rt_mmio.C | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/usr/mmio/runtime/rt_mmio.C b/src/usr/mmio/runtime/rt_mmio.C new file mode 100644 index 000000000..620dff855 --- /dev/null +++ b/src/usr/mmio/runtime/rt_mmio.C @@ -0,0 +1,108 @@ +/* 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 |
