netdev - [PATCH net-next,2/3] octeontx2-af: Add support for CPT1 in debugfs

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Date:   Wed, 13 Jan 2021 20:50:06 +0530
From:   Srujana Challa <schalla@...vell.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <kuba@...nel.org>,
        <sgoutham@...vell.com>, <gakula@...vell.com>,
        <sbhatta@...vell.com>, <schandran@...vell.com>,
        <pathreya@...vell.com>, <jerinj@...vell.com>,
        Srujana Challa <schalla@...vell.com>,
        Mahipal Challa <mchalla@...vell.com>
Subject: [PATCH net-next,2/3] octeontx2-af: Add support for CPT1 in debugfs

Adds support to display block CPT1 stats at
"/sys/kernel/debug/octeontx2/cpt1".

Signed-off-by: Mahipal Challa <mchalla@...vell.com>
Signed-off-by: Srujana Challa <schalla@...vell.com>
---
 .../marvell/octeontx2/af/rvu_debugfs.c        | 45 +++++++++++--------
 1 file changed, 26 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index d27543c1a166..158876366dd3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -1904,6 +1904,18 @@ static void rvu_dbg_npc_init(struct rvu *rvu)
 }
 
 /* CPT debugfs APIs */
+static int cpt_get_blkaddr(struct seq_file *filp)
+{
+	struct dentry *current_dir;
+	int blkaddr;
+
+	current_dir = filp->file->f_path.dentry->d_parent;
+	blkaddr = (!strcmp(current_dir->d_name.name, "cpt1") ?
+			   BLKADDR_CPT1 : BLKADDR_CPT0);
+
+	return blkaddr;
+}
+
 static int cpt_eng_sts_display(struct seq_file *filp, u8 eng_type)
 {
 	struct rvu *rvu = filp->private;
@@ -1913,9 +1925,7 @@ static int cpt_eng_sts_display(struct seq_file *filp, u8 eng_type)
 	int blkaddr;
 	u64 reg;
 
-	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0);
-	if (blkaddr < 0)
-		return -ENODEV;
+	blkaddr = cpt_get_blkaddr(filp);
 
 	reg = rvu_read64(rvu, blkaddr, CPT_AF_CONSTANTS1);
 	max_ses = reg & 0xffff;
@@ -1982,9 +1992,7 @@ static int rvu_dbg_cpt_engines_info_display(struct seq_file *filp, void *unused)
 	int blkaddr;
 	u64 reg;
 
-	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0);
-	if (blkaddr < 0)
-		return -ENODEV;
+	blkaddr = cpt_get_blkaddr(filp);
 
 	reg = rvu_read64(rvu, blkaddr, CPT_AF_CONSTANTS1);
 	max_ses = reg & 0xffff;
@@ -2020,9 +2028,7 @@ static int rvu_dbg_cpt_lfs_info_display(struct seq_file *filp, void *unused)
 	u64 reg;
 	u32 lf;
 
-	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0);
-	if (blkaddr < 0)
-		return -ENODEV;
+	blkaddr = cpt_get_blkaddr(filp);
 
 	block = &hw->block[blkaddr];
 	if (!block->lf.bmap)
@@ -2052,9 +2058,7 @@ static int rvu_dbg_cpt_err_info_display(struct seq_file *filp, void *unused)
 	u64 reg0, reg1;
 	int blkaddr;
 
-	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0);
-	if (blkaddr < 0)
-		return -ENODEV;
+	blkaddr = cpt_get_blkaddr(filp);
 
 	reg0 = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(0));
 	reg1 = rvu_read64(rvu, blkaddr, CPT_AF_FLTX_INT(1));
@@ -2083,9 +2087,7 @@ static int rvu_dbg_cpt_pc_display(struct seq_file *filp, void *unused)
 	u64 reg;
 
 	rvu = filp->private;
-	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_CPT, 0);
-	if (blkaddr < 0)
-		return -ENODEV;
+	blkaddr = cpt_get_blkaddr(filp);
 
 	reg = rvu_read64(rvu, blkaddr, CPT_AF_INST_REQ_PC);
 	seq_printf(filp, "CPT instruction requests   %llu\n", reg);
@@ -2107,12 +2109,16 @@ static int rvu_dbg_cpt_pc_display(struct seq_file *filp, void *unused)
 
 RVU_DEBUG_SEQ_FOPS(cpt_pc, cpt_pc_display, NULL);
 
-static void rvu_dbg_cpt_init(struct rvu *rvu)
+static void rvu_dbg_cpt_init(struct rvu *rvu, int blkaddr)
 {
-	if (!is_block_implemented(rvu->hw, BLKADDR_CPT0))
+	if (!is_block_implemented(rvu->hw, blkaddr))
 		return;
 
-	rvu->rvu_dbg.cpt = debugfs_create_dir("cpt", rvu->rvu_dbg.root);
+	if (blkaddr == BLKADDR_NIX0)
+		rvu->rvu_dbg.cpt = debugfs_create_dir("cpt", rvu->rvu_dbg.root);
+	else
+		rvu->rvu_dbg.cpt = debugfs_create_dir("cpt1",
+						      rvu->rvu_dbg.root);
 
 	debugfs_create_file("cpt_pc", 0600, rvu->rvu_dbg.cpt, rvu,
 			    &rvu_dbg_cpt_pc_fops);
@@ -2145,7 +2151,8 @@ void rvu_dbg_init(struct rvu *rvu)
 	rvu_dbg_nix_init(rvu, BLKADDR_NIX1);
 	rvu_dbg_cgx_init(rvu);
 	rvu_dbg_npc_init(rvu);
-	rvu_dbg_cpt_init(rvu);
+	rvu_dbg_cpt_init(rvu, BLKADDR_CPT0);
+	rvu_dbg_cpt_init(rvu, BLKADDR_CPT1);
 }
 
 void rvu_dbg_exit(struct rvu *rvu)
-- 
2.29.0