diff options
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/core')
-rw-r--r-- | src/import/chips/p9/procedures/hwp/core/p9_hcd_core_stopclocks.C | 113 |
1 files changed, 89 insertions, 24 deletions
diff --git a/src/import/chips/p9/procedures/hwp/core/p9_hcd_core_stopclocks.C b/src/import/chips/p9/procedures/hwp/core/p9_hcd_core_stopclocks.C index 7e5cefb38..2bec05ee7 100644 --- a/src/import/chips/p9/procedures/hwp/core/p9_hcd_core_stopclocks.C +++ b/src/import/chips/p9/procedures/hwp/core/p9_hcd_core_stopclocks.C @@ -42,6 +42,7 @@ #include <p9_misc_scom_addresses.H> #include <p9_quad_scom_addresses.H> #include <p9_hcd_common.H> +#include <p9_common_clk_ctrl_state.H> #include "p9_hcd_core_stopclocks.H" //------------------------------------------------------------------------------ @@ -50,8 +51,12 @@ enum P9_HCD_CORE_STOPCLOCKS_CONSTANTS { - CORE_CLK_SYNC_TIMEOUT_IN_MS = 1, - CORE_CLK_STOP_TIMEOUT_IN_MS = 1 + CORE_PCB_MUX_POLLING_HW_NS_DELAY = 10000, + CORE_PCB_MUX_POLLING_SIM_CYCLE_DELAY = 320000, + CORE_CLK_SYNC_POLLING_HW_NS_DELAY = 10000, + CORE_CLK_SYNC_POLLING_SIM_CYCLE_DELAY = 320000, + CORE_CLK_STOP_POLLING_HW_NS_DELAY = 10000, + CORE_CLK_STOP_POLLING_SIM_CYCLE_DELAY = 320000 }; //------------------------------------------------------------------------------ @@ -63,9 +68,11 @@ p9_hcd_core_stopclocks( const fapi2::Target<fapi2::TARGET_TYPE_CORE>& i_target) { FAPI_INF(">>p9_hcd_core_stopclocks"); + fapi2::ReturnCode l_rc; fapi2::buffer<uint64_t> l_ccsr; fapi2::buffer<uint64_t> l_data64; - uint32_t l_timeout; + fapi2::buffer<uint64_t> l_temp64; + uint32_t l_loops1ms; uint8_t l_attr_chip_unit_pos; uint8_t l_attr_vdm_enable; const fapi2::Target<fapi2::TARGET_TYPE_SYSTEM> l_sys; @@ -83,12 +90,59 @@ p9_hcd_core_stopclocks( // Prepare to stop core clocks // ---------------------------- - FAPI_DBG("Assert Core-L2/CC Quiesces via CME_SCOM_SICR[6,8]/[7,9]"); - FAPI_TRY(putScom(l_quad, - (l_attr_chip_unit_pos < 2) ? - EX_0_CME_SCOM_SICR_OR : EX_1_CME_SCOM_SICR_OR, - (BIT64(6 + (l_attr_chip_unit_pos % 2)) | - BIT64(8 + (l_attr_chip_unit_pos % 2))))); + FAPI_DBG("Check PM_RESET_STATE_INDICATOR via GPMMR[15]"); + FAPI_TRY(getScom(i_target, C_PPM_GPMMR_SCOM, l_data64)); + + if (!l_data64.getBit<15>()) + { + FAPI_DBG("Gracefully turn off power management, continue anyways if fail"); + /// @todo suspend_pm() + } + + FAPI_DBG("Check core clock controller status"); + l_rc = p9_common_clk_ctrl_state<fapi2::TARGET_TYPE_CORE>(i_target); + + if (l_rc) + { + FAPI_INF("Clock controller of this core chiplet is inaccessible, return"); + goto fapi_try_exit; + } + + FAPI_DBG("Check cache clock controller status"); + l_rc = p9_common_clk_ctrl_state<fapi2::TARGET_TYPE_EQ>(l_quad); + + if (l_rc) + { + FAPI_INF("WARNING: core is enabled while cache is not, continue anyways"); + } + else + { + + FAPI_DBG("Check PERV clock status for access to CME via CLOCK_STAT[4]"); + FAPI_TRY(getScom(l_quad, EQ_CLOCK_STAT_SL, l_data64)); + + FAPI_DBG("Check PERV fence status for access to CME via CPLT_CTRL1[4]"); + FAPI_TRY(getScom(l_quad, EQ_CPLT_CTRL1, l_temp64)); + + if (l_data64.getBit<4>() == 0 && l_temp64.getBit<4>() == 0) + { + //halt cme(poll for halted, if timeout, print warnning keep going). + + FAPI_DBG("Assert Core-L2/CC Quiesces via CME_SCOM_SICR[6,8]/[7,9]"); + FAPI_TRY(putScom(l_quad, + (l_attr_chip_unit_pos < 2) ? + EX_0_CME_SCOM_SICR_OR : EX_1_CME_SCOM_SICR_OR, + (BIT64(6 + (l_attr_chip_unit_pos % 2)) | + BIT64(8 + (l_attr_chip_unit_pos % 2))))); + } + } + + FAPI_DBG("Assert pm_mux_disable to get PCB Mux from CME via SLAVE_CONFIG[7]"); + FAPI_TRY(getScom(i_target, C_SLAVE_CONFIG_REG, l_data64)); + FAPI_TRY(putScom(i_target, C_SLAVE_CONFIG_REG, DATA_SET(7))); + + FAPI_DBG("Override possible PPM write protection to CME via CPPM_CPMMR[1]"); + FAPI_TRY(putScom(i_target, C_CPPM_CPMMR_OR, MASK_SET(1))); FAPI_DBG("Assert chiplet fence via NET_CTRL0[18]"); FAPI_TRY(putScom(i_target, C_NET_CTRL0_WOR, MASK_SET(18))); @@ -107,28 +161,26 @@ p9_hcd_core_stopclocks( FAPI_TRY(putScom(i_target, C_CLK_REGION, l_data64)); FAPI_DBG("Poll for core clocks stopped via CPLT_STAT0[8]"); - l_timeout = (p9hcd::CYCLES_PER_MS / p9hcd::INSTS_PER_POLL_LOOP) * - CORE_CLK_STOP_TIMEOUT_IN_MS; + l_loops1ms = 1E6 / CORE_CLK_STOP_POLLING_HW_NS_DELAY; do { + fapi2::delay(CORE_CLK_STOP_POLLING_HW_NS_DELAY, + CORE_CLK_STOP_POLLING_SIM_CYCLE_DELAY); + FAPI_TRY(getScom(i_target, C_CPLT_STAT0, l_data64)); } - while((l_data64.getBit<8>() != 1) && ((--l_timeout) != 0)); + while((l_data64.getBit<8>() != 1) && ((--l_loops1ms) != 0)); - FAPI_ASSERT((l_timeout != 0), - fapi2::PMPROC_CORECLKSTOP_TIMEOUT() - .set_CORE_TARGET(i_target) - .set_CORECPLTSTAT(l_data64), + FAPI_ASSERT((l_loops1ms != 0), + fapi2::PMPROC_CORECLKSTOP_TIMEOUT().set_CORECPLTSTAT(l_data64), "Core Clock Stop Timeout"); FAPI_DBG("Check core clocks stopped via CLOCK_STAT_SL[4-13]"); FAPI_TRY(getScom(i_target, C_CLOCK_STAT_SL, l_data64)); FAPI_ASSERT((((~l_data64) & p9hcd::CLK_REGION_ALL_BUT_PLL) == 0), - fapi2::PMPROC_CORECLKSTOP_FAILED() - .set_CORE_TARGET(i_target) - .set_CORECLKSTAT(l_data64), + fapi2::PMPROC_CORECLKSTOP_FAILED().set_CORECLKSTAT(l_data64), "Core Clock Stop Failed"); FAPI_DBG("Core clocks stopped now"); @@ -140,16 +192,18 @@ p9_hcd_core_stopclocks( FAPI_TRY(putScom(i_target, C_CPPM_CACCR_CLEAR, MASK_SET(15))); FAPI_DBG("Poll for core clock sync done to drop via CPPM_CACSR[13]"); - l_timeout = (p9hcd::CYCLES_PER_MS / p9hcd::INSTS_PER_POLL_LOOP) * - CORE_CLK_STOP_TIMEOUT_IN_MS; + l_loops1ms = 1E6 / CORE_CLK_SYNC_POLLING_HW_NS_DELAY; do { + fapi2::delay(CORE_CLK_SYNC_POLLING_HW_NS_DELAY, + CORE_CLK_SYNC_POLLING_SIM_CYCLE_DELAY); + FAPI_TRY(getScom(i_target, C_CPPM_CACSR, l_data64)); } - while((l_data64.getBit<13>() == 1) && ((--l_timeout) != 0)); + while((l_data64.getBit<13>() == 1) && ((--l_loops1ms) != 0)); - FAPI_ASSERT((l_timeout != 0), + FAPI_ASSERT((l_loops1ms != 0), fapi2::PMPROC_CORECLKSYNCDROP_TIMEOUT().set_COREPPMCACSR(l_data64), "Core Clock Sync Drop Timeout"); FAPI_DBG("Core clock sync done dropped"); @@ -186,7 +240,18 @@ p9_hcd_core_stopclocks( // ------------------------------- FAPI_DBG("Set core as stopped in STOP history register"); - FAPI_TRY(putScom(i_target, C_PPM_SSHSRC, (BIT64(0) | BIT64(13)))); + FAPI_TRY(putScom(i_target, C_PPM_SSHSRC, BIT64(0))); + + // ------------------------------- + // Clean up + // ------------------------------- + + FAPI_DBG("Return possible PPM write protection to CME via CPPM_CPMMR[1]"); + FAPI_TRY(putScom(i_target, C_CPPM_CPMMR_CLEAR, MASK_SET(1))); + + FAPI_DBG("Drop pm_mux_disable to release PCB Mux via SLAVE_CONFIG[7]"); + FAPI_TRY(getScom(i_target, C_SLAVE_CONFIG_REG, l_data64)); + FAPI_TRY(putScom(i_target, C_SLAVE_CONFIG_REG, DATA_UNSET(7))); fapi_try_exit: |