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iwlwifi: add debugfs file to read fw debug data recording

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FW debug data will oneshot read all data available in DRAM
and fill the supplied user buffer. In case the read request
is greater than the new data in DRAM, the driver will write
all data it has and return the buffer immediately.

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Lior Cohen <lior2.cohen@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Lior Cohen
2018-05-03 10:17:05 +03:00
committed by Luca Coelho
parent d47902f9f7
commit f7805b33f9
6 changed files with 228 additions and 0 deletions
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14
drivers/net/wireless/intel/iwlwifi/fw/dbg.h
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@@ -266,6 +266,9 @@ _iwl_fw_dbg_stop_recording(struct iwl_trans *trans,
iwl_write_prph(trans, DBGC_IN_SAMPLE, 0);
udelay(100);
iwl_write_prph(trans, DBGC_OUT_CTRL, 0);
#ifdef CONFIG_IWLWIFI_DEBUGFS
trans->dbg_rec_on = false;
#endif
}
static inline void
@@ -296,6 +299,14 @@ _iwl_fw_dbg_restart_recording(struct iwl_trans *trans,
}
}
#ifdef CONFIG_IWLWIFI_DEBUGFS
static inline void iwl_fw_set_dbg_rec_on(struct iwl_fw_runtime *fwrt)
{
if (fwrt->fw->dbg.dest_tlv && fwrt->cur_fw_img == IWL_UCODE_REGULAR)
fwrt->trans->dbg_rec_on = true;
}
#endif
static inline void
iwl_fw_dbg_restart_recording(struct iwl_fw_runtime *fwrt,
struct iwl_fw_dbg_params *params)
@@ -304,6 +315,9 @@ iwl_fw_dbg_restart_recording(struct iwl_fw_runtime *fwrt,
_iwl_fw_dbg_restart_recording(fwrt->trans, params);
else
iwl_fw_dbg_start_stop_hcmd(fwrt, true);
#ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_fw_set_dbg_rec_on(fwrt);
#endif
}
static inline void iwl_fw_dump_conf_clear(struct iwl_fw_runtime *fwrt)