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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/lib/occlib/occhw_scom_cmd.h $ */
/* */
/* OpenPOWER OnChipController Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2017 */
/* [+] 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 */
#ifndef __OCCHW_SCOM_CMD_H__
#define __OCCHW_SCOM_CMD_H__
/// \file occhw_scom_cmd.h
/// \brief Defines the shared scom command control block
///
/// This file contains definitions that are used by both ppc405 and GPE
/// instances inside the OCC.
// The most significant bit of scom addresses is always 0, so we use this
// bit to tell the SCOM proxy server (GPE) whether a getscom or putscom is
// needed.
#define OCCHW_SCOM_READ_MASK 0x80000000
// This is a status value that the ppc405 will write to the status
// word prior to starting a new request. This value can be used to
// detect that the GPE has not yet written status for the request.
// Note: The GPE simply copies it's MSR value to the status field
// when it completes. This value is not a valid MSR value.
#define OCCHW_SCOM_PENDING 0x0000EF00
// Define the structure offsets for use in assembly code on the GPE
#define OCCHW_SCOM_STATUS_OFFSET 0
#define OCCHW_SCOM_ADDR_OFFSET 4
#define OCCHW_SCOM_DATA_OFFSET 8
#ifndef __ASSEMBLER__
typedef union
{
uint32_t status32;
struct
{
uint32_t rsvd0 : 1;
uint32_t mask : 7;
uint32_t is0 : 1;
uint32_t sibrc : 3;
uint32_t lp : 1;
uint32_t we : 1;
uint32_t is1 : 1;
uint32_t uie : 1;
uint32_t ee : 1;
uint32_t rsvd1 : 2;
uint32_t me : 1;
uint32_t rsvd2 : 3;
uint32_t ipe : 1;
uint32_t sibrca : 8;
};
} occhw_scom_status_t;
typedef struct
{
//MSR is saved here
volatile occhw_scom_status_t scom_status;
//msg is used to communicate read/!write
volatile uint32_t scom_addr;
//data for putscom or from getscom
volatile uint64_t scom_data;
} occhw_scom_cmd_t;
#endif /*__ASSEMBLER__*/
#endif /* __OCCHW_SCOM_CMD_H__ */
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