diff options
Diffstat (limited to 'lmr/lmr.h')
| -rw-r--r-- | lmr/lmr.h | 129 |
1 files changed, 129 insertions, 0 deletions
@@ -15,6 +15,8 @@ #include "pciutils.h" +#define MARGIN_STEP_MS 1000 + /* PCI Device wrapper for margining functions */ struct margin_dev { struct pci_dev *dev; @@ -34,6 +36,118 @@ struct margin_link { struct margin_dev up_port; }; +/* Specification Revision 5.0 Table 8-11 */ +struct margin_params { + bool ind_error_sampler; + bool sample_report_method; + bool ind_left_right_tim; + bool ind_up_down_volt; + bool volt_support; + + u8 max_lanes; + + u8 timing_steps; + u8 timing_offset; + + u8 volt_steps; + u8 volt_offset; + + u8 sample_rate_v; + u8 sample_rate_t; +}; + +/* Step Margin Execution Status - Step command response */ +enum margin_step_exec_sts { + MARGIN_NAK = 0, // NAK/Set up for margin + MARGIN_LIM, // Too many errors (device limit) + MARGIN_THR // Test threshold has been reached +}; + +enum margin_dir { VOLT_UP = 0, VOLT_DOWN, TIM_LEFT, TIM_RIGHT }; + +/* Margining results of one lane of the receiver */ +struct margin_res_lane { + u8 lane; + u8 steps[4]; + enum margin_step_exec_sts statuses[4]; +}; + +/* Reason not to run margining test on the Link/Receiver */ +enum margin_test_status { + MARGIN_TEST_OK = 0, + MARGIN_TEST_READY_BIT, + MARGIN_TEST_CAPS, + + // Couldn't run test + MARGIN_TEST_PREREQS, + MARGIN_TEST_ARGS_LANES, + MARGIN_TEST_ARGS_RECVS, + MARGIN_TEST_ASPM +}; + +/* All lanes Receiver results */ +struct margin_results { + u8 recvn; // Receiver Number + struct margin_params params; + bool lane_reversal; + u8 link_speed; + + enum margin_test_status test_status; + + /* Used to convert steps to physical quantity. + Calculated from MaxOffset and NumSteps */ + double tim_coef; + double volt_coef; + + u8 lanes_n; + struct margin_res_lane *lanes; +}; + +/* pcilmr arguments */ +struct margin_args { + u8 steps_t; // 0 == use NumTimingSteps + u8 steps_v; // 0 == use NumVoltageSteps + u8 parallel_lanes; // [1; MaxLanes + 1] + u8 error_limit; // [0; 63] + u8 recvs[6]; // Receivers Numbers + u8 recvs_n; // 0 == margin all available receivers + u8 lanes[32]; // Lanes to Margin + u8 lanes_n; // 0 == margin all available lanes + bool run_margin; // Or print params only + u8 verbosity; // 0 - basic; + // 1 - add info about remaining time and lanes in progress during margining + + u64 *steps_utility; // For ETA logging +}; + +/* Receiver structure */ +struct margin_recv { + struct margin_dev *dev; + u8 recvn; // Receiver Number + bool lane_reversal; + struct margin_params *params; + + u8 parallel_lanes; + u8 error_limit; +}; + +struct margin_lanes_data { + struct margin_recv *recv; + + struct margin_res_lane *results; + u8 *lanes_numbers; + u8 lanes_n; + + bool ind; + enum margin_dir dir; + + u8 steps_lane_done; + u8 steps_lane_total; + u64 *steps_utility; + + u8 verbosity; +}; + /* margin_hw */ /* Verify that devices form the link with 16 GT/s or 32 GT/s data rate */ @@ -52,4 +166,19 @@ bool margin_prep_link(struct margin_link *link); /* Restore ASPM, Hardware Autonomous Speed/Width settings */ void margin_restore_link(struct margin_link *link); +/* margin */ + +/* Fill margin_params without calling other functions */ +bool margin_read_params(struct pci_access *pacc, struct pci_dev *dev, u8 recvn, + struct margin_params *params); + +enum margin_test_status margin_process_args(struct margin_dev *dev, struct margin_args *args); + +/* Awaits that args are prepared through process_args. + Returns number of margined Receivers through recvs_n */ +struct margin_results *margin_test_link(struct margin_link *link, struct margin_args *args, + u8 *recvs_n); + +void margin_free_results(struct margin_results *results, u8 results_n); + #endif |