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| 1 | +/* IBM_PROLOG_BEGIN_TAG */ |
| 2 | +/* This is an automatically generated prolog. */ |
| 3 | +/* */ |
| 4 | +/* $Source: src/import/chips/centaur/procedures/hwp/io/p9_io_cen_pdwn_lanes.C $ */ |
| 5 | +/* */ |
| 6 | +/* OpenPOWER HostBoot Project */ |
| 7 | +/* */ |
| 8 | +/* Contributors Listed Below - COPYRIGHT 2015,2017 */ |
| 9 | +/* [+] International Business Machines Corp. */ |
| 10 | +/* */ |
| 11 | +/* */ |
| 12 | +/* Licensed under the Apache License, Version 2.0 (the "License"); */ |
| 13 | +/* you may not use this file except in compliance with the License. */ |
| 14 | +/* You may obtain a copy of the License at */ |
| 15 | +/* */ |
| 16 | +/* http://www.apache.org/licenses/LICENSE-2.0 */ |
| 17 | +/* */ |
| 18 | +/* Unless required by applicable law or agreed to in writing, software */ |
| 19 | +/* distributed under the License is distributed on an "AS IS" BASIS, */ |
| 20 | +/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ |
| 21 | +/* implied. See the License for the specific language governing */ |
| 22 | +/* permissions and limitations under the License. */ |
| 23 | +/* */ |
| 24 | +/* IBM_PROLOG_END_TAG */ |
| 25 | +/// |
| 26 | +/// @file p9_io_cen_pdwn_lanes.C |
| 27 | +/// @brief P9 Centaur Power Down Lanes. |
| 28 | +///---------------------------------------------------------------------------- |
| 29 | +/// *HWP HWP Owner : Chris Steffen <cwsteffen@us.ibm.com> |
| 30 | +/// *HWP HWP Backup Owner : Gary Peterson <garyp@us.ibm.com> |
| 31 | +/// *HWP FW Owner : Jamie Knight <rjknight@us.ibm.com> |
| 32 | +/// *HWP Team : IO |
| 33 | +/// *HWP Level : 2 |
| 34 | +/// *HWP Consumed by : FSP:HB |
| 35 | +///---------------------------------------------------------------------------- |
| 36 | +/// |
| 37 | +/// @verbatim |
| 38 | +/// High-level procedure flow: |
| 39 | +/// |
| 40 | +/// A HWP that powers down lanes. This procedure should power down rx lanes, |
| 41 | +/// tx lanes, or both rx & tx lanes. |
| 42 | +/// |
| 43 | +/// Procedure Prereq: |
| 44 | +/// - System clocks are running. |
| 45 | +/// |
| 46 | +/// @endverbatim |
| 47 | +///---------------------------------------------------------------------------- |
| 48 | + |
| 49 | +// ---------------------------------------------------------------------------- |
| 50 | +// Includes |
| 51 | +// ---------------------------------------------------------------------------- |
| 52 | +#include "p9_io_cen_pdwn_lanes.H" |
| 53 | +#include "p9_io_scom.H" |
| 54 | +#include "p9_io_regs.H" |
| 55 | + |
| 56 | +// ---------------------------------------------------------------------------- |
| 57 | +// Procedure Function |
| 58 | +// ---------------------------------------------------------------------------- |
| 59 | +fapi2::ReturnCode rx_pdwn_lanes( |
| 60 | + const fapi2::Target< fapi2::TARGET_TYPE_MEMBUF_CHIP >& i_target, |
| 61 | + const std::vector< uint8_t >& i_bad_lanes); |
| 62 | +fapi2::ReturnCode tx_pdwn_lanes( |
| 63 | + const fapi2::Target< fapi2::TARGET_TYPE_MEMBUF_CHIP >& i_target, |
| 64 | + const std::vector< uint8_t >& i_bad_lanes); |
| 65 | + |
| 66 | + |
| 67 | +/** |
| 68 | + * @brief A HWP that powers down the specified lanes on a given EDI+ Centaur |
| 69 | + * target. The rx & tx lanes in the vectors will be powered down on the |
| 70 | + * given target. Note: This procedure does not power down any lanes on the |
| 71 | + * connected target of the link. |
| 72 | + * @param[in] i_target FAPI2 Target |
| 73 | + * @param[in] i_rx_bad_lanes Vector of Rx Bad Lanes |
| 74 | + * @param[in] i_tx_bad_lanes Vector of Tx Bad Lanes |
| 75 | + * @retval ReturnCode |
| 76 | + */ |
| 77 | +fapi2::ReturnCode p9_io_cen_pdwn_lanes( |
| 78 | + const fapi2::Target< fapi2::TARGET_TYPE_MEMBUF_CHIP >& i_target, |
| 79 | + const std::vector< uint8_t >& i_rx_bad_lanes, |
| 80 | + const std::vector< uint8_t >& i_tx_bad_lanes) |
| 81 | +{ |
| 82 | + FAPI_IMP("Entering..."); |
| 83 | + |
| 84 | + FAPI_DBG("Rx Bad Lanes Size: %d", i_rx_bad_lanes.size()); |
| 85 | + |
| 86 | + if(!i_rx_bad_lanes.empty()) |
| 87 | + { |
| 88 | + FAPI_TRY(rx_pdwn_lanes(i_target, i_rx_bad_lanes), |
| 89 | + "Rx Power Down Lanes Failed"); |
| 90 | + } |
| 91 | + |
| 92 | + FAPI_DBG("Tx Bad Lanes Size: %d", i_tx_bad_lanes.size()); |
| 93 | + |
| 94 | + if(!i_tx_bad_lanes.empty()) |
| 95 | + { |
| 96 | + FAPI_TRY(tx_pdwn_lanes(i_target, i_tx_bad_lanes), |
| 97 | + "Tx Power Down Lanes Failed"); |
| 98 | + } |
| 99 | + |
| 100 | +fapi_try_exit: |
| 101 | + FAPI_IMP("Exiting..."); |
| 102 | + return fapi2::current_err; |
| 103 | +} |
| 104 | + |
| 105 | +/** |
| 106 | + * @brief A HWP that powers down the specified lanes on a given EDI+ Centaur |
| 107 | + * target. The rx lanes in the vector will be powered down on the |
| 108 | + * given target. Note: This procedure does not power down any lanes on the |
| 109 | + * connected target of the link. |
| 110 | + * @param[in] i_target FAPI2 Target |
| 111 | + * @param[in] i_bad_lanes Vector of Bad Lanes |
| 112 | + * @retval ReturnCode |
| 113 | + */ |
| 114 | +fapi2::ReturnCode rx_pdwn_lanes( |
| 115 | + const fapi2::Target< fapi2::TARGET_TYPE_MEMBUF_CHIP >& i_target, |
| 116 | + const std::vector< uint8_t >& i_bad_lanes) |
| 117 | +{ |
| 118 | + const uint8_t GRP0 = 0; |
| 119 | + FAPI_DBG("rx_pdwn_lanes: Enter Size(%d)", i_bad_lanes.size()); |
| 120 | + char target_string[fapi2::MAX_ECMD_STRING_LEN]; |
| 121 | + fapi2::toString(i_target, target_string, fapi2::MAX_ECMD_STRING_LEN); |
| 122 | + |
| 123 | + if(!i_bad_lanes.empty()) |
| 124 | + { |
| 125 | + for(uint8_t index = 0; index < i_bad_lanes.size(); ++index) |
| 126 | + { |
| 127 | + FAPI_DBG("Powering Down Rx Lane[%d/%d]: Target(%s:g%d:l%d)", |
| 128 | + index, |
| 129 | + i_bad_lanes.size() - 1, |
| 130 | + target_string, |
| 131 | + GRP0, |
| 132 | + i_bad_lanes[index]); |
| 133 | + |
| 134 | + FAPI_TRY(io::rmw(EDIP_RX_LANE_DIG_PDWN, i_target, GRP0, i_bad_lanes[index], 1), |
| 135 | + "Failed rmw rx dig pdwn reg"); |
| 136 | + |
| 137 | + FAPI_TRY(io::rmw(EDIP_RX_LANE_ANA_PDWN, i_target, GRP0, i_bad_lanes[index], 1), |
| 138 | + "Failed rmw rx ana pdwn reg"); |
| 139 | + |
| 140 | + } |
| 141 | + } |
| 142 | + |
| 143 | +fapi_try_exit: |
| 144 | + FAPI_IMP("rx_pdwn_lanes: Exiting."); |
| 145 | + return fapi2::current_err; |
| 146 | +} |
| 147 | + |
| 148 | +/** |
| 149 | + * @brief A HWP that powers down the specified lanes on a given EDI+ Centaur |
| 150 | + * target. The tx lanes in the vector will be powered down on the |
| 151 | + * given target. Note: This procedure does not power down any lanes on the |
| 152 | + * connected target of the link. |
| 153 | + * @param[in] i_target FAPI2 Target |
| 154 | + * @param[in] i_bad_lanes Vector of Bad Lanes |
| 155 | + * @retval ReturnCode |
| 156 | + */ |
| 157 | +fapi2::ReturnCode tx_pdwn_lanes( |
| 158 | + const fapi2::Target< fapi2::TARGET_TYPE_MEMBUF_CHIP >& i_target, |
| 159 | + const std::vector< uint8_t >& i_bad_lanes) |
| 160 | +{ |
| 161 | + FAPI_IMP("tx_pdwn_lanes: Enter Size(%d)", i_bad_lanes.size()); |
| 162 | + const uint8_t GRP0 = 0; |
| 163 | + const uint8_t LN0 = 0; |
| 164 | + uint8_t l_msbswap = 0; |
| 165 | + uint8_t l_end_lane = 0; |
| 166 | + uint8_t l_lane = 0; |
| 167 | + uint64_t l_data = 0; |
| 168 | + char target_string[fapi2::MAX_ECMD_STRING_LEN]; |
| 169 | + fapi2::toString(i_target, target_string, fapi2::MAX_ECMD_STRING_LEN); |
| 170 | + |
| 171 | + if(!i_bad_lanes.empty()) |
| 172 | + { |
| 173 | + FAPI_TRY(io::read(EDIP_TX_MSBSWAP, i_target, GRP0, LN0, l_data), |
| 174 | + "Failed read edip_tx_msbswap"); |
| 175 | + l_msbswap = io::get(EDIP_TX_MSBSWAP, l_data); |
| 176 | + |
| 177 | + if(l_msbswap == 0x1) |
| 178 | + { |
| 179 | + FAPI_TRY(io::read(EDIP_TX_END_LANE_ID, i_target, GRP0, LN0, l_data)); |
| 180 | + l_end_lane = io::get(EDIP_TX_END_LANE_ID, l_data); |
| 181 | + FAPI_DBG("edip_tx_msbswap: tx_end_lane_id(%d).", l_end_lane); |
| 182 | + } |
| 183 | + |
| 184 | + for(uint8_t index = 0; index < i_bad_lanes.size(); ++index) |
| 185 | + { |
| 186 | + l_lane = i_bad_lanes[index]; |
| 187 | + |
| 188 | + if(l_msbswap == 0x1) |
| 189 | + { |
| 190 | + l_lane = l_end_lane - i_bad_lanes[index]; |
| 191 | + FAPI_DBG("edip_tx_msbswap: tx_end_lane_id(%d) lane(%d -> %d).", |
| 192 | + l_end_lane, i_bad_lanes[index], l_lane); |
| 193 | + } |
| 194 | + |
| 195 | + FAPI_DBG("Powering Down Tx Lane[%d/%d]: Target(%s:g%d:l%d)", |
| 196 | + index, |
| 197 | + i_bad_lanes.size() - 1, |
| 198 | + target_string, |
| 199 | + GRP0, |
| 200 | + l_lane); |
| 201 | + |
| 202 | + FAPI_TRY(io::rmw(EDIP_TX_LANE_PDWN, i_target, GRP0, l_lane, 1)); |
| 203 | + |
| 204 | + } |
| 205 | + } |
| 206 | + |
| 207 | +fapi_try_exit: |
| 208 | + FAPI_IMP("tx_pdwn_lanes: Exiting"); |
| 209 | + return fapi2::current_err; |
| 210 | +} |
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