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wifi: iwlwifi: be less noisy if the NIC is dead in S3

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If the NIC is dead upon resume, try to catch the error earlier and exit
earlier. We'll print less error messages and get to the same recovery
path as before: reload the firmware.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20241028135215.3a18682261e5.I18f336a4537378a4c1a8537d7246cee1fc82b42c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2024-10-28 13:54:55 +02:00 committed by Johannes Berg
parent d1a54ec21b
commit 0572b7715f
4 changed files with 30 additions and 14 deletions
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11
drivers/net/wireless/intel/iwlwifi/fw/dump.c
View File

@ -537,13 +537,18 @@ bool iwl_fwrt_read_err_table(struct iwl_trans *trans, u32 base, u32 *err_id)
/* cf. struct iwl_error_event_table */
u32 valid;
__le32 err_id;
} err_info;
} err_info = {};
int ret;
if (!base)
return false;
iwl_trans_read_mem_bytes(trans, base,
&err_info, sizeof(err_info));
ret = iwl_trans_read_mem_bytes(trans, base,
&err_info, sizeof(err_info));
if (ret)
return true;
if (err_info.valid && err_id)
*err_id = le32_to_cpu(err_info.err_id);

13
drivers/net/wireless/intel/iwlwifi/iwl-trans.h
View File

@ -1074,12 +1074,13 @@ int iwl_trans_read_config32(struct iwl_trans *trans, u32 ofs,
void iwl_trans_debugfs_cleanup(struct iwl_trans *trans);
#endif
#define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize) \
do { \
if (__builtin_constant_p(bufsize)) \
BUILD_BUG_ON((bufsize) % sizeof(u32)); \
iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\
} while (0)
#define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize) \
({ \
if (__builtin_constant_p(bufsize)) \
BUILD_BUG_ON((bufsize) % sizeof(u32)); \
iwl_trans_read_mem(trans, addr, buf, \
(bufsize) / sizeof(u32)); \
})
int iwl_trans_write_imr_mem(struct iwl_trans *trans, u32 dst_addr,
u64 src_addr, u32 byte_cnt);

18
drivers/net/wireless/intel/iwlwifi/mvm/d3.c
View File

@ -3107,7 +3107,6 @@ static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
ieee80211_resume_disconnect(vif);
}
static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
@ -3706,22 +3705,31 @@ int iwl_mvm_fast_resume(struct iwl_mvm *mvm)
iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
if (iwl_mvm_check_rt_status(mvm, NULL)) {
IWL_ERR(mvm,
"iwl_mvm_check_rt_status failed, device is gone during suspend\n");
set_bit(STATUS_FW_ERROR, &mvm->trans->status);
iwl_mvm_dump_nic_error_log(mvm);
iwl_dbg_tlv_time_point(&mvm->fwrt,
IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
false, 0);
return -ENODEV;
mvm->trans->state = IWL_TRANS_NO_FW;
ret = -ENODEV;
goto out;
}
ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
if (ret) {
IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret);
mvm->trans->state = IWL_TRANS_NO_FW;
}
out:
clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
mvm->fast_resume = false;
if (ret)
IWL_ERR(mvm, "Couldn't get the d3 notif %d\n", ret);
return ret;
}

2
drivers/net/wireless/intel/iwlwifi/pcie/trans.c
View File

@ -1643,6 +1643,8 @@ int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
out:
if (*status == IWL_D3_STATUS_ALIVE)
ret = iwl_pcie_d3_handshake(trans, false);
else
trans->state = IWL_TRANS_NO_FW;
return ret;
}