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From: Luca Coelho <luca@coelho.fi>
To: kvalo@codeaurora.org
Cc: linux-wireless@vger.kernel.org
Subject: [PATCH 12/16] iwlwifi: dbg_ini: support domain changing via debugfs
Date: Sat, 12 Oct 2019 18:48:24 +0300
Message-ID: <20191012184707.32c15e3f61c9.I65d0d5e782864f53b4ed8a6f43e72c50a09d9fd9@changeid> (raw)
In-Reply-To: <20191012154828.9249-1-luca@coelho.fi>

From: Shahar S Matityahu <shahar.s.matityahu@intel.com>

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@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 .../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


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-12 15:48 [PATCH 00/16] iwlwifi: updates intended for v5.5 2019-10-12 Luca Coelho
2019-10-12 15:48 ` [PATCH 01/16] iwlwifi: dbg_ini: load external dbg cfg after internal cfg is loaded Luca Coelho
2019-10-12 15:48 ` [PATCH 02/16] iwlwifi: dbg_ini: use new region TLV in dump flow Luca Coelho
2019-10-12 15:48 ` [PATCH 03/16] iwlwifi: dbg_ini: use new trigger " Luca Coelho
2019-10-12 15:48 ` [PATCH 04/16] iwlwifi: dbg: remove multi buffers infra Luca Coelho
2019-10-12 15:48 ` [PATCH 05/16] iwlwifi: dbg_ini: add monitor dumping support Luca Coelho
2019-10-12 15:48 ` [PATCH 06/16] iwlwifi: dbg_ini: add error tables " Luca Coelho
2019-10-12 15:48 ` [PATCH 07/16] iwlwifi: dbg_ini: use new API in dump info Luca Coelho
2019-10-12 15:48 ` [PATCH 08/16] iwlwifi: dbg_ini: add TLV allocation new API support Luca Coelho
2019-10-12 15:48 ` [PATCH 09/16] iwlwifi: dbg_ini: implement time point handling Luca Coelho
2019-10-12 15:48 ` [PATCH 10/16] iwlwifi: dbg_ini: implement monitor allocation flow Luca Coelho
2019-10-12 15:48 ` [PATCH 11/16] iwlwifi: dbg_ini: add periodic trigger new API support Luca Coelho
2019-10-12 15:48 ` Luca Coelho [this message]
2019-10-12 15:48 ` [PATCH 13/16] iwlwifi: dbg_ini: support FW response/notification region type Luca Coelho
2019-10-12 15:48 ` [PATCH 14/16] iwlwifi: dbg_ini: rename external debug configuration file Luca Coelho
2019-10-12 15:48 ` [PATCH 15/16] iwlwifi: dbg_ini: remove old API and some related code Luca Coelho
2019-10-12 15:48 ` [PATCH 16/16] iwlwifi: dbg_ini: support FW notification dumping in case of missed beacon Luca Coelho

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