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Message-Id: <1573709193-15446-2-git-send-email-sunil.kovvuri@gmail.com>
Date: Thu, 14 Nov 2019 10:56:16 +0530
From: sunil.kovvuri@...il.com
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, Christina Jacob <cjacob@...vell.com>,
Prakash Brahmajyosyula <bprakash@...vell.com>,
Sunil Goutham <sgoutham@...vell.com>
Subject: [PATCH v2 01/18] octeontx2-af: Dump current resource provisioning status
From: Christina Jacob <cjacob@...vell.com>
Added support to dump current resource provisioning status
of all resource virtualization unit (RVU) block's
(i.e NPA, NIX, SSO, SSOW, CPT, TIM) local functions attached
to a PF_FUNC into a debugfs file.
'cat /sys/kernel/debug/octeontx2/rsrc_alloc'
will show the current block LF's allocation status.
Signed-off-by: Christina Jacob <cjacob@...vell.com>
Signed-off-by: Prakash Brahmajyosyula <bprakash@...vell.com>
Signed-off-by: Sunil Goutham <sgoutham@...vell.com>
---
drivers/net/ethernet/marvell/octeontx2/af/Makefile | 2 +-
drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 4 +
drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 18 +++
.../ethernet/marvell/octeontx2/af/rvu_debugfs.c | 146 +++++++++++++++++++++
4 files changed, 169 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/Makefile b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
index 06329ac..1b25948 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/Makefile
+++ b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
@@ -8,4 +8,4 @@ obj-$(CONFIG_OCTEONTX2_AF) += octeontx2_af.o
octeontx2_mbox-y := mbox.o
octeontx2_af-y := cgx.o rvu.o rvu_cgx.o rvu_npa.o rvu_nix.o \
- rvu_reg.o rvu_npc.o
+ rvu_reg.o rvu_npc.o rvu_debugfs.o
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index e581091..8ed5498 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -2456,6 +2456,9 @@ static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (err)
goto err_irq;
+ /* Initialize debugfs */
+ rvu_dbg_init(rvu);
+
return 0;
err_irq:
rvu_unregister_interrupts(rvu);
@@ -2482,6 +2485,7 @@ static void rvu_remove(struct pci_dev *pdev)
{
struct rvu *rvu = pci_get_drvdata(pdev);
+ rvu_dbg_exit(rvu);
rvu_unregister_interrupts(rvu);
rvu_flr_wq_destroy(rvu);
rvu_cgx_exit(rvu);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index c9d60b0..9e8ef1f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -35,6 +35,12 @@
#define RVU_PFVF_FUNC_SHIFT 0
#define RVU_PFVF_FUNC_MASK 0x3FF
+#ifdef CONFIG_DEBUG_FS
+struct rvu_debugfs {
+ struct dentry *root;
+};
+#endif
+
struct rvu_work {
struct work_struct work;
struct rvu *rvu;
@@ -263,6 +269,10 @@ struct rvu {
struct list_head cgx_evq_head; /* cgx event queue head */
char mkex_pfl_name[MKEX_NAME_LEN]; /* Configured MKEX profile name */
+
+#ifdef CONFIG_DEBUG_FS
+ struct rvu_debugfs rvu_dbg;
+#endif
};
static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
@@ -501,4 +511,12 @@ int rvu_mbox_handler_npc_mcam_alloc_and_write_entry(struct rvu *rvu,
struct npc_mcam_alloc_and_write_entry_rsp *rsp);
int rvu_mbox_handler_npc_get_kex_cfg(struct rvu *rvu, struct msg_req *req,
struct npc_get_kex_cfg_rsp *rsp);
+
+#ifdef CONFIG_DEBUG_FS
+void rvu_dbg_init(struct rvu *rvu);
+void rvu_dbg_exit(struct rvu *rvu);
+#else
+static inline void rvu_dbg_init(struct rvu *rvu) {}
+static inline void rvu_dbg_exit(struct rvu *rvu) {}
+#endif
#endif /* RVU_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
new file mode 100644
index 0000000..ede6cdb
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell OcteonTx2 RVU Admin Function driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifdef CONFIG_DEBUG_FS
+
+#include <linux/fs.h>
+#include <linux/debugfs.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "rvu_struct.h"
+#include "rvu_reg.h"
+#include "rvu.h"
+
+#define DEBUGFS_DIR_NAME "octeontx2"
+
+#define rvu_dbg_NULL NULL
+
+#define RVU_DEBUG_FOPS(name, read_op, write_op) \
+static const struct file_operations rvu_dbg_##name##_fops = { \
+ .owner = THIS_MODULE, \
+ .open = simple_open, \
+ .read = rvu_dbg_##read_op, \
+ .write = rvu_dbg_##write_op \
+}
+
+/* Dumps current provisioning status of all RVU block LFs */
+static ssize_t rvu_dbg_rsrc_attach_status(struct file *filp,
+ char __user *buffer,
+ size_t count, loff_t *ppos)
+{
+ int index, off = 0, flag = 0, go_back = 0, off_prev;
+ struct rvu *rvu = filp->private_data;
+ int lf, pf, vf, pcifunc;
+ struct rvu_block block;
+ int bytes_not_copied;
+ int buf_size = 2048;
+ char *buf;
+
+ /* don't allow partial reads */
+ if (*ppos != 0)
+ return 0;
+
+ buf = kzalloc(buf_size, GFP_KERNEL);
+ if (!buf)
+ return -ENOSPC;
+ off += scnprintf(&buf[off], buf_size - 1 - off, "\npcifunc\t\t");
+ for (index = 0; index < BLK_COUNT; index++)
+ if (strlen(rvu->hw->block[index].name))
+ off += scnprintf(&buf[off], buf_size - 1 - off,
+ "%*s\t", (index - 1) * 2,
+ rvu->hw->block[index].name);
+ off += scnprintf(&buf[off], buf_size - 1 - off, "\n");
+ for (pf = 0; pf < rvu->hw->total_pfs; pf++) {
+ for (vf = 0; vf <= rvu->hw->total_vfs; vf++) {
+ pcifunc = pf << 10 | vf;
+ if (!pcifunc)
+ continue;
+
+ if (vf) {
+ go_back = scnprintf(&buf[off],
+ buf_size - 1 - off,
+ "PF%d:VF%d\t\t", pf,
+ vf - 1);
+ } else {
+ go_back = scnprintf(&buf[off],
+ buf_size - 1 - off,
+ "PF%d\t\t", pf);
+ }
+
+ off += go_back;
+ for (index = 0; index < BLKTYPE_MAX; index++) {
+ block = rvu->hw->block[index];
+ if (!strlen(block.name))
+ continue;
+ off_prev = off;
+ for (lf = 0; lf < block.lf.max; lf++) {
+ if (block.fn_map[lf] != pcifunc)
+ continue;
+ flag = 1;
+ off += scnprintf(&buf[off], buf_size - 1
+ - off, "%3d,", lf);
+ }
+ if (flag && off_prev != off)
+ off--;
+ else
+ go_back++;
+ off += scnprintf(&buf[off], buf_size - 1 - off,
+ "\t");
+ }
+ if (!flag)
+ off -= go_back;
+ else
+ flag = 0;
+ off--;
+ off += scnprintf(&buf[off], buf_size - 1 - off, "\n");
+ }
+ }
+
+ bytes_not_copied = copy_to_user(buffer, buf, off);
+ kfree(buf);
+
+ if (bytes_not_copied)
+ return -EFAULT;
+
+ *ppos = off;
+ return off;
+}
+
+RVU_DEBUG_FOPS(rsrc_status, rsrc_attach_status, NULL);
+
+void rvu_dbg_init(struct rvu *rvu)
+{
+ struct device *dev = &rvu->pdev->dev;
+ struct dentry *pfile;
+
+ rvu->rvu_dbg.root = debugfs_create_dir(DEBUGFS_DIR_NAME, NULL);
+ if (!rvu->rvu_dbg.root) {
+ dev_err(rvu->dev, "%s failed\n", __func__);
+ return;
+ }
+ pfile = debugfs_create_file("rsrc_alloc", 0444, rvu->rvu_dbg.root, rvu,
+ &rvu_dbg_rsrc_status_fops);
+ if (!pfile)
+ goto create_failed;
+
+ return;
+
+create_failed:
+ dev_err(dev, "Failed to create debugfs dir\n");
+ debugfs_remove_recursive(rvu->rvu_dbg.root);
+}
+
+void rvu_dbg_exit(struct rvu *rvu)
+{
+ debugfs_remove_recursive(rvu->rvu_dbg.root);
+}
+
+#endif /* CONFIG_DEBUG_FS */
--
2.7.4
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