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Message-Id: <20250829123042.44459-8-siva.kallam@broadcom.com>
Date: Fri, 29 Aug 2025 12:30:41 +0000
From: Siva Reddy Kallam <siva.kallam@...adcom.com>
To: leonro@...dia.com,
jgg@...dia.com
Cc: linux-rdma@...r.kernel.org,
netdev@...r.kernel.org,
vikas.gupta@...adcom.com,
selvin.xavier@...adcom.com,
anand.subramanian@...adcom.com,
Siva Reddy Kallam <siva.kallam@...adcom.com>,
Usman Ansari <usman.ansari@...adcom.com>
Subject: [PATCH 7/8] RDMA/bng_re: Add basic debugfs infrastructure
Add basic debugfs infrastructure for Broadcom next generation
controller.
Signed-off-by: Siva Reddy Kallam <siva.kallam@...adcom.com>
Reviewed-by: Usman Ansari <usman.ansari@...adcom.com>
---
drivers/infiniband/hw/bng_re/Makefile | 3 +-
drivers/infiniband/hw/bng_re/bng_debugfs.c | 39 ++++++++++++++++++++++
drivers/infiniband/hw/bng_re/bng_debugfs.h | 12 +++++++
drivers/infiniband/hw/bng_re/bng_dev.c | 12 +++++++
drivers/infiniband/hw/bng_re/bng_re.h | 1 +
5 files changed, 66 insertions(+), 1 deletion(-)
create mode 100644 drivers/infiniband/hw/bng_re/bng_debugfs.c
create mode 100644 drivers/infiniband/hw/bng_re/bng_debugfs.h
diff --git a/drivers/infiniband/hw/bng_re/Makefile b/drivers/infiniband/hw/bng_re/Makefile
index 556b763b43f9..c6aaaf853c77 100644
--- a/drivers/infiniband/hw/bng_re/Makefile
+++ b/drivers/infiniband/hw/bng_re/Makefile
@@ -4,4 +4,5 @@ ccflags-y := -I $(srctree)/drivers/net/ethernet/broadcom/bnge -I $(srctree)/driv
obj-$(CONFIG_INFINIBAND_BNG_RE) += bng_re.o
bng_re-y := bng_dev.o bng_fw.o \
- bng_res.o bng_sp.o
+ bng_res.o bng_sp.o \
+ bng_debugfs.o
diff --git a/drivers/infiniband/hw/bng_re/bng_debugfs.c b/drivers/infiniband/hw/bng_re/bng_debugfs.c
new file mode 100644
index 000000000000..9ec5a8785250
--- /dev/null
+++ b/drivers/infiniband/hw/bng_re/bng_debugfs.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2025 Broadcom.
+#include <linux/debugfs.h>
+#include <linux/pci.h>
+
+#include <rdma/ib_verbs.h>
+
+#include "bng_res.h"
+#include "bng_fw.h"
+#include "bnge.h"
+#include "bnge_auxr.h"
+#include "bng_re.h"
+#include "bng_debugfs.h"
+
+static struct dentry *bng_re_debugfs_root;
+
+void bng_re_debugfs_add_pdev(struct bng_re_dev *rdev)
+{
+ struct pci_dev *pdev = rdev->aux_dev->pdev;
+
+ rdev->dbg_root =
+ debugfs_create_dir(dev_name(&pdev->dev), bng_re_debugfs_root);
+}
+
+void bng_re_debugfs_rem_pdev(struct bng_re_dev *rdev)
+{
+ debugfs_remove_recursive(rdev->dbg_root);
+ rdev->dbg_root = NULL;
+}
+
+void bng_re_register_debugfs(void)
+{
+ bng_re_debugfs_root = debugfs_create_dir("bng_re", NULL);
+}
+
+void bng_re_unregister_debugfs(void)
+{
+ debugfs_remove(bng_re_debugfs_root);
+}
diff --git a/drivers/infiniband/hw/bng_re/bng_debugfs.h b/drivers/infiniband/hw/bng_re/bng_debugfs.h
new file mode 100644
index 000000000000..baef71df4242
--- /dev/null
+++ b/drivers/infiniband/hw/bng_re/bng_debugfs.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+// Copyright (c) 2025 Broadcom.
+
+#ifndef __BNG_RE_DEBUGFS__
+#define __BNG_RE_DEBUGFS__
+
+void bng_re_debugfs_add_pdev(struct bng_re_dev *rdev);
+void bng_re_debugfs_rem_pdev(struct bng_re_dev *rdev);
+
+void bng_re_register_debugfs(void);
+void bng_re_unregister_debugfs(void);
+#endif
diff --git a/drivers/infiniband/hw/bng_re/bng_dev.c b/drivers/infiniband/hw/bng_re/bng_dev.c
index 9faa64af3047..773121682bbe 100644
--- a/drivers/infiniband/hw/bng_re/bng_dev.c
+++ b/drivers/infiniband/hw/bng_re/bng_dev.c
@@ -14,6 +14,7 @@
#include "bnge_auxr.h"
#include "bng_re.h"
#include "bnge_hwrm.h"
+#include "bng_debugfs.h"
static char version[] =
BNG_RE_DESC "\n";
@@ -219,6 +220,7 @@ static void bng_re_query_hwrm_version(struct bng_re_dev *rdev)
static void bng_re_dev_uninit(struct bng_re_dev *rdev)
{
+ bng_re_debugfs_rem_pdev(rdev);
bng_re_disable_rcfw_channel(&rdev->rcfw);
bng_re_net_ring_free(rdev, rdev->rcfw.creq.ring_id,
RING_ALLOC_REQ_RING_TYPE_NQ);
@@ -318,6 +320,9 @@ static int bng_re_dev_init(struct bng_re_dev *rdev)
rc = bng_re_get_dev_attr(&rdev->rcfw);
if (rc)
goto disable_rcfw;
+
+ bng_re_debugfs_add_pdev(rdev);
+
return 0;
disable_rcfw:
bng_re_disable_rcfw_channel(&rdev->rcfw);
@@ -424,17 +429,24 @@ static int __init bng_re_mod_init(void)
pr_info("%s: %s", BNG_ROCE_DRV_MODULE_NAME, version);
+ bng_re_register_debugfs();
+
rc = auxiliary_driver_register(&bng_re_driver);
if (rc) {
pr_err("%s: Failed to register auxiliary driver\n",
BNG_ROCE_DRV_MODULE_NAME);
+ goto unreg_debugfs;
}
+ return 0;
+unreg_debugfs:
+ bng_re_unregister_debugfs();
return rc;
}
static void __exit bng_re_mod_exit(void)
{
auxiliary_driver_unregister(&bng_re_driver);
+ bng_re_unregister_debugfs();
}
module_init(bng_re_mod_init);
diff --git a/drivers/infiniband/hw/bng_re/bng_re.h b/drivers/infiniband/hw/bng_re/bng_re.h
index 7598dd91043b..76837f17f12d 100644
--- a/drivers/infiniband/hw/bng_re/bng_re.h
+++ b/drivers/infiniband/hw/bng_re/bng_re.h
@@ -76,6 +76,7 @@ struct bng_re_dev {
struct bng_re_nq_record *nqr;
/* Device Resources */
struct bng_re_dev_attr *dev_attr;
+ struct dentry *dbg_root;
};
#endif
--
2.34.1
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