From 917f39bb9ad295a701a47cb020ae91a2a0224d84 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Tue, 10 Feb 2015 10:49:20 +0200 Subject: [PATCH] iwlwifi: mvm: add trigger for firmware dump upon command response This will allow to collect the data as soon the firmware sends a specific notification of command response. Signed-off-by: Emmanuel Grumbach --- .../net/wireless/iwlwifi/iwl-fw-error-dump.h | 3 ++ drivers/net/wireless/iwlwifi/iwl-fw-file.h | 11 ++++++ drivers/net/wireless/iwlwifi/mvm/ops.c | 34 +++++++++++++++++++ 3 files changed, 48 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h b/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h index 1ee58b3dca1d..1d5195b4aad2 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h @@ -244,6 +244,8 @@ iwl_fw_error_next_data(struct iwl_fw_error_dump_data *data) * @FW_DBG_TRIGGER_MISSED_BEACONS: trigger log collection when beacons are * missed. * @FW_DBG_TRIGGER_CHANNEL_SWITCH: trigger log collection upon channel switch. + * @FW_DBG_TRIGGER_FW_NOTIF: trigger log collection when the firmware sends a + * command response or a notification. */ enum iwl_fw_dbg_trigger { FW_DBG_TRIGGER_INVALID = 0, @@ -251,6 +253,7 @@ enum iwl_fw_dbg_trigger { FW_DBG_TRIGGER_FW_ASSERT, FW_DBG_TRIGGER_MISSED_BEACONS, FW_DBG_TRIGGER_CHANNEL_SWITCH, + FW_DBG_TRIGGER_FW_NOTIF, /* must be last */ FW_DBG_TRIGGER_MAX, diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/iwlwifi/iwl-fw-file.h index 85745dcb0e22..49388c290704 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-file.h @@ -540,6 +540,17 @@ struct iwl_fw_dbg_trigger_missed_bcon { __le32 reserved1[2]; } __packed; +/** + * struct iwl_fw_dbg_trigger_cmd - configures trigger for messages from FW. + * cmds: the list of commands to trigger the collection on + */ +struct iwl_fw_dbg_trigger_cmd { + struct cmd { + u8 cmd_id; + u8 group_id; + } __packed cmds[16]; +} __packed; + /** * struct iwl_fw_dbg_conf_tlv - a TLV that describes a debug configuration. * @id: conf id diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c index f1c5751934d5..fe40922a6b0d 100644 --- a/drivers/net/wireless/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/iwlwifi/mvm/ops.c @@ -685,6 +685,38 @@ static void iwl_mvm_async_handlers_wk(struct work_struct *wk) mutex_unlock(&mvm->mutex); } +static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm, + struct iwl_rx_packet *pkt) +{ + struct iwl_fw_dbg_trigger_tlv *trig; + struct iwl_fw_dbg_trigger_cmd *cmds_trig; + char buf[32]; + int i; + + if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF)) + return; + + trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF); + cmds_trig = (void *)trig->data; + + if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) + return; + + for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) { + /* don't collect on CMD 0 */ + if (!cmds_trig->cmds[i].cmd_id) + break; + + if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd) + continue; + + memset(buf, 0, sizeof(buf)); + snprintf(buf, sizeof(buf), "CMD 0x%02x received", pkt->hdr.cmd); + iwl_mvm_fw_dbg_collect_trig(mvm, trig, buf, sizeof(buf)); + break; + } +} + static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, struct iwl_rx_cmd_buffer *rxb, struct iwl_device_cmd *cmd) @@ -693,6 +725,8 @@ static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); u8 i; + iwl_mvm_rx_check_trigger(mvm, pkt); + /* * Do the notification wait before RX handlers so * even if the RX handler consumes the RXB we have -- 2.20.1