From: Shahar S Matityahu <shahar.s.matityahu@xxxxxxxxx>
Allow to change or read the debug domain bitmap at runtime via
fw_dbg_domain debugfs.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
.../net/wireless/intel/iwlwifi/fw/debugfs.c | 37 +++++++++++++++++++
.../net/wireless/intel/iwlwifi/iwl-trans.h | 5 +++
2 files changed, 42 insertions(+)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c
index c1aa4360736b..7f1d299e8b0a 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c
@@ -320,10 +320,47 @@ static ssize_t iwl_dbgfs_send_hcmd_write(struct iwl_fw_runtime *fwrt, char *buf,
FWRT_DEBUGFS_WRITE_FILE_OPS(send_hcmd, 512);
+static ssize_t iwl_dbgfs_fw_dbg_domain_write(struct iwl_fw_runtime *fwrt,
+ char *buf, size_t count)
+{
+ u32 new_domain;
+ long val;
+ int ret;
+
+ if (!iwl_trans_fw_running(fwrt->trans))
+ return -EIO;
+
+ ret = kstrtol(buf, 0, &val);
+ if (ret)
+ return ret;
+
+ new_domain = (u32)val;
+ if (new_domain != fwrt->trans->dbg.domains_bitmap) {
+ ret = iwl_dbg_tlv_gen_active_trigs(fwrt, new_domain);
+ if (ret)
+ return ret;
+
+ iwl_dbg_tlv_time_point(fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
+ NULL);
+ }
+
+ return count;
+}
+
+static ssize_t iwl_dbgfs_fw_dbg_domain_read(struct iwl_fw_runtime *fwrt,
+ size_t size, char *buf)
+{
+ return scnprintf(buf, size, "0x%08x\n",
+ fwrt->trans->dbg.domains_bitmap);
+}
+
+FWRT_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_domain, 20);
+
void iwl_fwrt_dbgfs_register(struct iwl_fw_runtime *fwrt,
struct dentry *dbgfs_dir)
{
INIT_DELAYED_WORK(&fwrt->timestamp.wk, iwl_fw_timestamp_marker_wk);
FWRT_DEBUGFS_ADD_FILE(timestamp_marker, dbgfs_dir, 0200);
FWRT_DEBUGFS_ADD_FILE(send_hcmd, dbgfs_dir, 0200);
+ FWRT_DEBUGFS_ADD_FILE(fw_dbg_domain, dbgfs_dir, 0600);
}
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
index 32e522991068..8cadad7364ac 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
@@ -1249,6 +1249,11 @@ static inline void iwl_trans_fw_error(struct iwl_trans *trans)
iwl_op_mode_nic_error(trans->op_mode);
}
+static inline bool iwl_trans_fw_running(struct iwl_trans *trans)
+{
+ return trans->state == IWL_TRANS_FW_ALIVE;
+}
+
static inline void iwl_trans_sync_nmi(struct iwl_trans *trans)
{
if (trans->ops->sync_nmi)
--
2.23.0
