diff options
| -rw-r--r-- | src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H | 88 | ||||
| -rw-r--r-- | src/import/chips/p9/procedures/xml/error_info/p9_sbe_lpc_init_errors.xml | 22 |
2 files changed, 110 insertions, 0 deletions
diff --git a/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H b/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H index 8328e55a6..3a1a9ef01 100644 --- a/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H +++ b/src/import/chips/p9/procedures/hwp/perv/p9_lpc_utils.H @@ -22,3 +22,91 @@ /* permissions and limitations under the License. */ /* */ /* IBM_PROLOG_END_TAG */ +/// @file p9_lpc_utils.H +/// +/// @brief Helper functions for indirect reads/writes to the LPC register space +/// @author Joachim Fenkes <fenkes@de.ibm.com> +#ifndef P9_LPC_UTILS_H_ +#define P9_LPC_UTILS_H_ + +const uint32_t LPC_CMD_TIMEOUT_DELAY_NS = 1000000; +const uint32_t LPC_CMD_TIMEOUT_COUNT = 4; + +static fapi2::ReturnCode lpc_rw( + const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip, + uint32_t i_addr, bool i_read_notwrite, fapi2::buffer<uint32_t>& io_data) +{ + const int l_bit_offset = (i_addr & 4) << 3; + fapi2::buffer<uint64_t> l_command; + l_command.writeBit<PU_LPC_CMD_REG_RNW>(i_read_notwrite) + .insertFromRight<PU_LPC_CMD_REG_SIZE, PU_LPC_CMD_REG_SIZE_LEN>(0x4) + .insertFromRight<PU_LPC_CMD_REG_ADR, PU_LPC_CMD_REG_ADR_LEN>(i_addr); + FAPI_TRY(fapi2::putScom(i_target_chip, PU_LPC_CMD_REG, l_command), "Error writing LPC command register"); + + if (!i_read_notwrite) + { + fapi2::buffer<uint64_t> l_data; + l_data.insert(io_data, l_bit_offset, 32); + FAPI_TRY(fapi2::putScom(i_target_chip, PU_LPC_DATA_REG, l_data), "Error writing LPC data"); + } + + { + fapi2::buffer<uint64_t> l_status; + int timeout = LPC_CMD_TIMEOUT_COUNT; + + while (timeout--) + { + FAPI_TRY(fapi2::getScom(i_target_chip, PU_LPC_STATUS_REG, l_status), "Error reading LPC status"); + + if (l_status.getBit<PU_LPC_STATUS_REG_DONE>()) + { + break; + } + + fapi2::delay(LPC_CMD_TIMEOUT_DELAY_NS, LPC_CMD_TIMEOUT_DELAY_NS); + } + + if (LPC_UTILS_TIMEOUT_FFDC) + { + FAPI_ASSERT(l_status.getBit<PU_LPC_STATUS_REG_DONE>(), fapi2::LPC_ACCESS_TIMEOUT() + .set_TARGET_CHIP(i_target_chip) + .set_COUNT(LPC_CMD_TIMEOUT_COUNT) + .set_COMMAND(l_command) + .set_DATA(io_data) + .set_STATUS(l_status), + "LPC access timed out"); + } + else if (!l_status.getBit<PU_LPC_STATUS_REG_DONE>()) + { + return fapi2::RC_LPC_ACCESS_TIMEOUT; + } + } + + if (i_read_notwrite) + { + fapi2::buffer<uint64_t> l_data; + FAPI_TRY(fapi2::getScom(i_target_chip, PU_LPC_DATA_REG, l_data), "Error reading LPC data"); + l_data.extract(io_data, l_bit_offset, 32); + } + + return fapi2::FAPI2_RC_SUCCESS; + +fapi_try_exit: + return fapi2::current_err; +} + +static inline fapi2::ReturnCode lpc_read( + const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip, + uint32_t i_addr, fapi2::buffer<uint32_t>& o_data) +{ + return lpc_rw(i_target_chip, i_addr, true, o_data); +} + +static inline fapi2::ReturnCode lpc_write( + const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target_chip, + uint32_t i_addr, fapi2::buffer<uint32_t> i_data) +{ + return lpc_rw(i_target_chip, i_addr, false, i_data); +} + +#endif /* P9_LPC_UTILS_H_ */ diff --git a/src/import/chips/p9/procedures/xml/error_info/p9_sbe_lpc_init_errors.xml b/src/import/chips/p9/procedures/xml/error_info/p9_sbe_lpc_init_errors.xml index 428a2f669..e14772a31 100644 --- a/src/import/chips/p9/procedures/xml/error_info/p9_sbe_lpc_init_errors.xml +++ b/src/import/chips/p9/procedures/xml/error_info/p9_sbe_lpc_init_errors.xml @@ -23,4 +23,26 @@ <!-- --> <!-- IBM_PROLOG_END_TAG --> <hwpErrors> + <sbeTarget>TARGET_CHIP</sbeTarget> + <hwpError> + <sbeError/> + <rc>RC_LPC_ACCESS_TIMEOUT</rc> + <description>An attempt to read/write data in the LPC address space via the Alter/Display unit timed out.</description> + <ffdc>COUNT</ffdc> + <ffdc>COMMAND</ffdc> + <ffdc>DATA</ffdc> + <ffdc>STATUS</ffdc> + <callout> + <procedure>CODE</procedure> + <priority>HIGH</priority> + </callout> + <callout> + <target>TARGET_CHIP</target> + <targetType>TARGET_TYPE_PROC_CHIP</targetType> + <priority>MEDIUM</priority> + </callout> + <deconfigure> + <target>TARGET_CHIP</target> + </deconfigure> + </hwpError> </hwpErrors> |
