diff options
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/perv/p9_common_stopclocks.C')
| -rw-r--r-- | src/import/chips/p9/procedures/hwp/perv/p9_common_stopclocks.C | 124 |
1 files changed, 123 insertions, 1 deletions
diff --git a/src/import/chips/p9/procedures/hwp/perv/p9_common_stopclocks.C b/src/import/chips/p9/procedures/hwp/perv/p9_common_stopclocks.C index e1d1bb32..2ead7460 100644 --- a/src/import/chips/p9/procedures/hwp/perv/p9_common_stopclocks.C +++ b/src/import/chips/p9/procedures/hwp/perv/p9_common_stopclocks.C @@ -44,6 +44,16 @@ #include <p9_perv_scom_addresses.H> #include <p9_perv_scom_addresses_fld.H> +enum P9_common_stopclocks_Private_Constants +{ + CBS_ACK_POLL = 20, + P9_WAIT_CBS_ACK_HW_NS_DELAY = 16000, + P9_WAIT_CBS_ACK_SIM_CYCLE_DELAY = 800000, + CBS_CMD_COMPLETE_POLL = 20, + P9_WAIT_CBS_CMD_COMPLETE_HW_NS_DELAY = 16000, + P9_WAIT_CBS_CMD_COMPLETE_SIM_CYCLE_DELAY = 800000 + +}; /// @brief --Raise partial good fences /// --set abstclk muxsel,syncclk_muxsel @@ -91,7 +101,7 @@ fapi_try_exit: /// @brief Raise chiplet fence for chiplets /// -/// @param[in] i_target_chip Reference to TARGET_TYPE_PERV target +/// @param[in] i_target_chiplet Reference to TARGET_TYPE_PERV target /// @return FAPI2_RC_SUCCESS if success, else error code. fapi2::ReturnCode p9_common_stopclocks_raise_fence( const fapi2::Target<fapi2::TARGET_TYPE_PERV>& i_target_chiplet) @@ -143,3 +153,115 @@ fapi_try_exit: return fapi2::current_err; } + +/// @brief Stopping PIB & NET domain clocks in PERV chiplet using CBS +/// +/// @param[in] i_target_chip Reference to TARGET_CHIP target +/// @return FAPI2_RC_SUCCESS if success, else error code. +fapi2::ReturnCode p9_common_stopclocks_pib_net_clkstop(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip) +{ + fapi2::buffer<uint32_t> l_data32_root_ctrl0; + + FAPI_INF("Entering p9_common_stopclocks_pib_net_clkstop ..."); + + FAPI_DBG("Clear FSI Fence1 to open CBS-CC interface"); + FAPI_TRY(fapi2::getCfamRegister(i_target_chip, PERV_ROOT_CTRL0_FSI, l_data32_root_ctrl0)); + + if(l_data32_root_ctrl0.getBit<PERV_ROOT_CTRL0_FENCE1_DC>()) + { + l_data32_root_ctrl0.clearBit<PERV_ROOT_CTRL0_FENCE1_DC>(); + FAPI_TRY(fapi2::putCfamRegister(i_target_chip, PERV_ROOT_CTRL0_FSI, l_data32_root_ctrl0)); + } + + FAPI_DBG("Check that state of CBS_REQ"); + + if(l_data32_root_ctrl0.getBit<PERV_ROOT_CTRL0_FSI_CC_VSB_CBS_REQ>()) + { + FAPI_DBG("CBS_REQ is high - Calling p9_common_stopclocks_poll_cbs_cmd_complete function"); + FAPI_TRY(p9_common_stopclocks_poll_cbs_cmd_complete(i_target_chip)); + } + else + { + FAPI_DBG("CBS_REQ is Low - Hence CBS is idle"); + } + + FAPI_DBG("Set CBS_CMD to stop PIB,NET clocks"); + FAPI_TRY(fapi2::getCfamRegister(i_target_chip, PERV_ROOT_CTRL0_FSI, l_data32_root_ctrl0)); + l_data32_root_ctrl0.insertFromRight<PERV_ROOT_CTRL0_FSI_CC_VSB_CBS_CMD, PERV_ROOT_CTRL0_FSI_CC_VSB_CBS_CMD_LEN>(0x4); + FAPI_TRY(fapi2::putCfamRegister(i_target_chip, PERV_ROOT_CTRL0_FSI, l_data32_root_ctrl0)); + + FAPI_DBG("Set CBS_REQ to 1 to start command"); + l_data32_root_ctrl0.setBit<PERV_ROOT_CTRL0_FSI_CC_VSB_CBS_REQ>(); + FAPI_TRY(fapi2::putCfamRegister(i_target_chip, PERV_ROOT_CTRL0_FSI, l_data32_root_ctrl0)); + + FAPI_DBG("Calling p9_common_stopclocks_poll_cbs_cmd_complete function"); + FAPI_TRY(p9_common_stopclocks_poll_cbs_cmd_complete(i_target_chip)); + + FAPI_INF("Exiting p9_common_stopclocks_pib_net_clkstop ..."); + +fapi_try_exit: + return fapi2::current_err; +} + + + +/// @brief Checking for CBS request complete +/// +/// @param[in] i_target_chip Reference to TARGET_CHIP target +/// @return FAPI2_RC_SUCCESS if success, else error code. +fapi2::ReturnCode p9_common_stopclocks_poll_cbs_cmd_complete(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& + i_target_chip) +{ + fapi2::buffer<uint32_t> l_data32_cbs_cc_stat; + fapi2::buffer<uint32_t> l_data32_root_ctrl0; + int l_timeout = 0; + + FAPI_INF("Entering p9_common_stopclocks_poll_cbs_cmd_complete ..."); + FAPI_DBG("Wait for CBS_ACK to go to 1"); + l_timeout = CBS_ACK_POLL; + + while (l_timeout != 0) + { + FAPI_TRY(fapi2::getCfamRegister(i_target_chip, PERV_CBS_STAT_FSI, l_data32_cbs_cc_stat)); + bool l_poll_data = l_data32_cbs_cc_stat.getBit<PERV_CBS_STAT_DBG_TP_TPFSI_ACK>(); + + if(l_poll_data == 1) + { + break; + } + + fapi2::delay(P9_WAIT_CBS_ACK_HW_NS_DELAY, P9_WAIT_CBS_ACK_SIM_CYCLE_DELAY); + --l_timeout; + } + + FAPI_ASSERT(l_timeout > 0, fapi2::CBS_ACK_NOT_HIGH_ERR(), "CBS_ACK is not HIGH with in expected time"); + + FAPI_DBG("Lower CBS_REQ"); + FAPI_TRY(fapi2::getCfamRegister(i_target_chip, PERV_ROOT_CTRL0_FSI, l_data32_root_ctrl0)); + l_data32_root_ctrl0.clearBit<PERV_ROOT_CTRL0_FSI_CC_VSB_CBS_REQ>(); + FAPI_TRY(fapi2::putCfamRegister(i_target_chip, PERV_ROOT_CTRL0_FSI, l_data32_root_ctrl0)); + + FAPI_DBG("Poll for CBS_ACK to go to 0"); + l_timeout = CBS_CMD_COMPLETE_POLL; + + while (l_timeout != 0) + { + FAPI_TRY(fapi2::getCfamRegister(i_target_chip, PERV_CBS_STAT_FSI, l_data32_cbs_cc_stat)); + bool l_poll_data = l_data32_cbs_cc_stat.getBit<PERV_CBS_STAT_DBG_TP_TPFSI_ACK>(); + + if(l_poll_data == 0) + { + break; + } + + fapi2::delay(P9_WAIT_CBS_CMD_COMPLETE_HW_NS_DELAY, P9_WAIT_CBS_CMD_COMPLETE_SIM_CYCLE_DELAY); + --l_timeout; + } + + FAPI_ASSERT(l_timeout > 0, fapi2::CBS_ACK_NOT_LOW_ERR(), "CBS_ACK is not LOW with in expected time"); + + FAPI_INF("Exiting p9_common_stopclocks_poll_cbs_cmd_complete ..."); + +fapi_try_exit: + return fapi2::current_err; +} |
