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| author | Johannes Berg <johannes.berg@intel.com> | 2021-10-24 16:55:06 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2021-10-28 12:04:10 +0300 |
| commit | c66ab56ad90355f20364794d1c6201831a5ceea9 (patch) | |
| tree | b8bbfc956fc7e8abb940d6891c9cf950384bdb72 /drivers/net/wireless/intel/iwlwifi/iwl-io.c | |
| parent | 3f7320428fa41a4c8be9c6f3d0cc06beeb0b3df8 (diff) | |
| download | linux-c66ab56ad90355f20364794d1c6201831a5ceea9.tar.xz | |
iwlwifi: dump host monitor data when NIC doesn't init
If the NIC cannot be initialized, dump host monitor data
so we can analyze properly why it didn't initialize.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211024165252.21c90ba4fa5f.I2a30f62aa4685dc7623d3c69838909833c3f435c@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-io.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-io.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-io.c b/drivers/net/wireless/intel/iwlwifi/iwl-io.c index 6e96ee5bc261..46917b4216b3 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-io.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-io.c @@ -398,6 +398,47 @@ int iwl_dump_fh(struct iwl_trans *trans, char **buf) return 0; } +#define IWL_HOST_MON_BLOCK_PEMON 0x00 +#define IWL_HOST_MON_BLOCK_HIPM 0x22 + +#define IWL_HOST_MON_BLOCK_PEMON_VEC0 0x00 +#define IWL_HOST_MON_BLOCK_PEMON_VEC1 0x01 +#define IWL_HOST_MON_BLOCK_PEMON_WFPM 0x06 + +static void iwl_dump_host_monitor_block(struct iwl_trans *trans, + u32 block, u32 vec, u32 iter) +{ + int i; + + IWL_ERR(trans, "Host monitor block 0x%x vector 0x%x\n", block, vec); + iwl_write32(trans, CSR_MONITOR_CFG_REG, (block << 8) | vec); + for (i = 0; i < iter; i++) + IWL_ERR(trans, " value [iter %d]: 0x%08x\n", + i, iwl_read32(trans, CSR_MONITOR_STATUS_REG)); +} + +static void iwl_dump_host_monitor(struct iwl_trans *trans) +{ + switch (trans->trans_cfg->device_family) { + case IWL_DEVICE_FAMILY_22000: + case IWL_DEVICE_FAMILY_AX210: + IWL_ERR(trans, "CSR_RESET = 0x%x\n", + iwl_read32(trans, CSR_RESET)); + iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON, + IWL_HOST_MON_BLOCK_PEMON_VEC0, 15); + iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON, + IWL_HOST_MON_BLOCK_PEMON_VEC1, 15); + iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON, + IWL_HOST_MON_BLOCK_PEMON_WFPM, 15); + iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_HIPM, + IWL_HOST_MON_BLOCK_PEMON_VEC0, 1); + break; + default: + /* not supported yet */ + return; + } +} + int iwl_finish_nic_init(struct iwl_trans *trans) { const struct iwl_cfg_trans_params *cfg_trans = trans->trans_cfg; @@ -433,9 +474,12 @@ int iwl_finish_nic_init(struct iwl_trans *trans) * and accesses to uCode SRAM. */ err = iwl_poll_bit(trans, CSR_GP_CNTRL, poll_ready, poll_ready, 25000); - if (err < 0) + if (err < 0) { IWL_DEBUG_INFO(trans, "Failed to wake NIC\n"); + iwl_dump_host_monitor(trans); + } + if (cfg_trans->bisr_workaround) { /* ensure BISR shift has finished */ udelay(200); |