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Message-Id: <20211206234155.15578-4-ryazanov.s.a@gmail.com>
Date: Tue, 7 Dec 2021 02:41:54 +0300
From: Sergey Ryazanov <ryazanov.s.a@...il.com>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, M Chetan Kumar <m.chetan.kumar@...el.com>,
Intel Corporation <linuxwwan@...el.com>,
Loic Poulain <loic.poulain@...aro.org>,
Johannes Berg <johannes@...solutions.net>,
Leon Romanovsky <leon@...nel.org>
Subject: [PATCH net-next v2 3/4] net: wwan: iosm: move debugfs knobs into a subdir
The modem traces collection is a device (and so driver) specific option.
Therefore, move the related debugfs files into a driver-specific
subdirectory under the common per WWAN device directory.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@...il.com>
---
Changes since v1:
* add missed description for a new structure field 'debugfs_dir'
drivers/net/wwan/iosm/Makefile | 1 +
drivers/net/wwan/iosm/iosm_ipc_debugfs.c | 29 ++++++++++++++++++++++++
drivers/net/wwan/iosm/iosm_ipc_debugfs.h | 12 ++++++++++
drivers/net/wwan/iosm/iosm_ipc_imem.c | 7 +++---
drivers/net/wwan/iosm/iosm_ipc_imem.h | 2 ++
drivers/net/wwan/iosm/iosm_ipc_trace.c | 6 ++---
6 files changed, 49 insertions(+), 8 deletions(-)
create mode 100644 drivers/net/wwan/iosm/iosm_ipc_debugfs.c
create mode 100644 drivers/net/wwan/iosm/iosm_ipc_debugfs.h
diff --git a/drivers/net/wwan/iosm/Makefile b/drivers/net/wwan/iosm/Makefile
index 5c2528beca2a..5091f664af0d 100644
--- a/drivers/net/wwan/iosm/Makefile
+++ b/drivers/net/wwan/iosm/Makefile
@@ -22,6 +22,7 @@ iosm-y = \
iosm_ipc_devlink.o \
iosm_ipc_flash.o \
iosm_ipc_coredump.o \
+ iosm_ipc_debugfs.o \
iosm_ipc_trace.o
obj-$(CONFIG_IOSM) := iosm.o
diff --git a/drivers/net/wwan/iosm/iosm_ipc_debugfs.c b/drivers/net/wwan/iosm/iosm_ipc_debugfs.c
new file mode 100644
index 000000000000..f2f57751a7d2
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_debugfs.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2020-2021 Intel Corporation.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/wwan.h>
+
+#include "iosm_ipc_imem.h"
+#include "iosm_ipc_trace.h"
+#include "iosm_ipc_debugfs.h"
+
+void ipc_debugfs_init(struct iosm_imem *ipc_imem)
+{
+ struct dentry *debugfs_pdev = wwan_get_debugfs_dir(ipc_imem->dev);
+
+ ipc_imem->debugfs_dir = debugfs_create_dir(KBUILD_MODNAME,
+ debugfs_pdev);
+
+ ipc_imem->trace = ipc_trace_init(ipc_imem);
+ if (!ipc_imem->trace)
+ dev_warn(ipc_imem->dev, "trace channel init failed");
+}
+
+void ipc_debugfs_deinit(struct iosm_imem *ipc_imem)
+{
+ ipc_trace_deinit(ipc_imem->trace);
+ debugfs_remove_recursive(ipc_imem->debugfs_dir);
+}
diff --git a/drivers/net/wwan/iosm/iosm_ipc_debugfs.h b/drivers/net/wwan/iosm/iosm_ipc_debugfs.h
new file mode 100644
index 000000000000..35788039f13f
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_debugfs.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2020-2021 Intel Corporation.
+ */
+
+#ifndef IOSM_IPC_DEBUGFS_H
+#define IOSM_IPC_DEBUGFS_H
+
+void ipc_debugfs_init(struct iosm_imem *ipc_imem);
+void ipc_debugfs_deinit(struct iosm_imem *ipc_imem);
+
+#endif
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem.c b/drivers/net/wwan/iosm/iosm_ipc_imem.c
index a60b93cefd2e..25b889922912 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem.c
@@ -11,6 +11,7 @@
#include "iosm_ipc_imem.h"
#include "iosm_ipc_port.h"
#include "iosm_ipc_trace.h"
+#include "iosm_ipc_debugfs.h"
/* Check the wwan ips if it is valid with Channel as input. */
static int ipc_imem_check_wwan_ips(struct ipc_mem_channel *chnl)
@@ -554,9 +555,7 @@ static void ipc_imem_run_state_worker(struct work_struct *instance)
ctrl_chl_idx++;
}
- ipc_imem->trace = ipc_trace_init(ipc_imem);
- if (!ipc_imem->trace)
- dev_warn(ipc_imem->dev, "trace channel init failed");
+ ipc_debugfs_init(ipc_imem);
ipc_task_queue_send_task(ipc_imem, ipc_imem_send_mdm_rdy_cb, 0, NULL, 0,
false);
@@ -1173,7 +1172,7 @@ void ipc_imem_cleanup(struct iosm_imem *ipc_imem)
if (test_and_clear_bit(FULLY_FUNCTIONAL, &ipc_imem->flag)) {
ipc_mux_deinit(ipc_imem->mux);
- ipc_trace_deinit(ipc_imem->trace);
+ ipc_debugfs_deinit(ipc_imem);
ipc_wwan_deinit(ipc_imem->wwan);
ipc_port_deinit(ipc_imem->ipc_port);
}
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem.h b/drivers/net/wwan/iosm/iosm_ipc_imem.h
index cec38009c44a..1b8c7b8959c6 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_imem.h
+++ b/drivers/net/wwan/iosm/iosm_ipc_imem.h
@@ -341,6 +341,7 @@ enum ipc_phase {
* @ev_mux_net_transmit_pending:0 means inform the IPC tasklet to pass
* @reset_det_n: Reset detect flag
* @pcie_wake_n: Pcie wake flag
+ * @debugfs_dir: Debug FS directory for driver-specific entries
*/
struct iosm_imem {
struct iosm_mmio *mmio;
@@ -380,6 +381,7 @@ struct iosm_imem {
ev_mux_net_transmit_pending:1,
reset_det_n:1,
pcie_wake_n:1;
+ struct dentry *debugfs_dir;
};
/**
diff --git a/drivers/net/wwan/iosm/iosm_ipc_trace.c b/drivers/net/wwan/iosm/iosm_ipc_trace.c
index c588a394cd94..5243ead90b5f 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_trace.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_trace.c
@@ -134,7 +134,6 @@ struct iosm_trace *ipc_trace_init(struct iosm_imem *ipc_imem)
{
struct ipc_chnl_cfg chnl_cfg = { 0 };
struct iosm_trace *ipc_trace;
- struct dentry *debugfs_pdev;
ipc_chnl_cfg_get(&chnl_cfg, IPC_MEM_CTRL_CHL_ID_3);
ipc_imem_channel_init(ipc_imem, IPC_CTYPE_CTRL, chnl_cfg,
@@ -150,15 +149,14 @@ struct iosm_trace *ipc_trace_init(struct iosm_imem *ipc_imem)
ipc_trace->chl_id = IPC_MEM_CTRL_CHL_ID_3;
mutex_init(&ipc_trace->trc_mutex);
- debugfs_pdev = wwan_get_debugfs_dir(ipc_imem->dev);
ipc_trace->ctrl_file = debugfs_create_file(IOSM_TRC_DEBUGFS_TRACE_CTRL,
IOSM_TRC_FILE_PERM,
- debugfs_pdev,
+ ipc_imem->debugfs_dir,
ipc_trace, &ipc_trace_fops);
ipc_trace->ipc_rchan = relay_open(IOSM_TRC_DEBUGFS_TRACE,
- debugfs_pdev,
+ ipc_imem->debugfs_dir,
IOSM_TRC_SUB_BUFF_SIZE,
IOSM_TRC_N_SUB_BUFF,
&relay_callbacks, NULL);
--
2.32.0
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