linux-kernel - [net-next Patch] octeontx2-af: map management port always to first PF

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Date: Wed, 27 Mar 2024 21:33:48 +0530
From: Hariprasad Kelam <hkelam@...vell.com>
To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <kuba@...nel.org>, <davem@...emloft.net>, <sgoutham@...vell.com>,
        <gakula@...vell.com>, <jerinj@...vell.com>, <lcherian@...vell.com>,
        <sbhatta@...vell.com>, <hkelam@...vell.com>, <naveenm@...vell.com>,
        <edumazet@...gle.com>, <pabeni@...hat.com>
Subject: [net-next Patch] octeontx2-af: map management port always to first PF

The user can enable or disable any MAC block or a few ports of the
block. The management port's interface name varies depending on the
setup of the user if its not mapped to the first pf.

The management port mapping is now configured to always connect to the
first PF. This patch implements this change.

Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  5 +-
 .../ethernet/marvell/octeontx2/af/rvu_cgx.c   | 60 +++++++++++++++----
 2 files changed, 53 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index eb2a20b5a0d0..105d2e8f25df 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -638,7 +638,10 @@ struct cgx_lmac_fwdata_s {
 	/* Only applicable if SFP/QSFP slot is present */
 	struct sfp_eeprom_s sfp_eeprom;
 	struct phy_s phy;
-#define LMAC_FWDATA_RESERVED_MEM 1021
+	u32 lmac_type;
+	u32 portm_idx;
+	u64 mgmt_port:1;
+#define LMAC_FWDATA_RESERVED_MEM 1019
 	u64 reserved[LMAC_FWDATA_RESERVED_MEM];
 };
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
index 72e060cf6b61..446344801576 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
@@ -118,15 +118,40 @@ static void rvu_map_cgx_nix_block(struct rvu *rvu, int pf,
 		pfvf->nix_blkaddr = BLKADDR_NIX1;
 }
 
-static int rvu_map_cgx_lmac_pf(struct rvu *rvu)
+static bool rvu_cgx_is_mgmt_port(struct rvu *rvu, int cgx_id, int lmac_id)
+{
+	struct cgx_lmac_fwdata_s *fwdata;
+
+	fwdata =  &rvu->fwdata->cgx_fw_data_usx[cgx_id][lmac_id];
+	if (fwdata->mgmt_port)
+		return true;
+
+	return false;
+}
+
+static void __rvu_map_cgx_lmac_pf(struct rvu *rvu, int pf, int cgx, int lmac)
 {
 	struct npc_pkind *pkind = &rvu->hw->pkind;
+	int numvfs, hwvfs;
+	int free_pkind;
+
+	rvu->pf2cgxlmac_map[pf] = cgxlmac_id_to_bmap(cgx, lmac);
+	rvu->cgxlmac2pf_map[CGX_OFFSET(cgx) + lmac] = 1 << pf;
+	free_pkind = rvu_alloc_rsrc(&pkind->rsrc);
+	pkind->pfchan_map[free_pkind] = ((pf) & 0x3F) << 16;
+	rvu_map_cgx_nix_block(rvu, pf, cgx, lmac);
+	rvu->cgx_mapped_pfs++;
+	rvu_get_pf_numvfs(rvu, pf, &numvfs, &hwvfs);
+	rvu->cgx_mapped_vfs += numvfs;
+}
+
+static int rvu_map_cgx_lmac_pf(struct rvu *rvu)
+{
 	int cgx_cnt_max = rvu->cgx_cnt_max;
 	int pf = PF_CGXMAP_BASE;
 	unsigned long lmac_bmap;
-	int size, free_pkind;
 	int cgx, lmac, iter;
-	int numvfs, hwvfs;
+	int size;
 
 	if (!cgx_cnt_max)
 		return 0;
@@ -155,6 +180,24 @@ static int rvu_map_cgx_lmac_pf(struct rvu *rvu)
 		return -ENOMEM;
 
 	rvu->cgx_mapped_pfs = 0;
+
+	/* Map mgmt port always to first PF */
+	for (cgx = 0; cgx < cgx_cnt_max; cgx++) {
+		if (!rvu_cgx_pdata(cgx, rvu))
+			continue;
+		lmac_bmap = cgx_get_lmac_bmap(rvu_cgx_pdata(cgx, rvu));
+		for_each_set_bit(iter, &lmac_bmap, rvu->hw->lmac_per_cgx) {
+			lmac = cgx_get_lmacid(rvu_cgx_pdata(cgx, rvu), iter);
+			if (rvu_cgx_is_mgmt_port(rvu, cgx, lmac)) {
+				__rvu_map_cgx_lmac_pf(rvu, pf, cgx, lmac);
+				pf++;
+				goto non_mgmtport_mapping;
+			}
+		}
+	}
+
+non_mgmtport_mapping:
+
 	for (cgx = 0; cgx < cgx_cnt_max; cgx++) {
 		if (!rvu_cgx_pdata(cgx, rvu))
 			continue;
@@ -162,14 +205,9 @@ static int rvu_map_cgx_lmac_pf(struct rvu *rvu)
 		for_each_set_bit(iter, &lmac_bmap, rvu->hw->lmac_per_cgx) {
 			lmac = cgx_get_lmacid(rvu_cgx_pdata(cgx, rvu),
 					      iter);
-			rvu->pf2cgxlmac_map[pf] = cgxlmac_id_to_bmap(cgx, lmac);
-			rvu->cgxlmac2pf_map[CGX_OFFSET(cgx) + lmac] = 1 << pf;
-			free_pkind = rvu_alloc_rsrc(&pkind->rsrc);
-			pkind->pfchan_map[free_pkind] = ((pf) & 0x3F) << 16;
-			rvu_map_cgx_nix_block(rvu, pf, cgx, lmac);
-			rvu->cgx_mapped_pfs++;
-			rvu_get_pf_numvfs(rvu, pf, &numvfs, &hwvfs);
-			rvu->cgx_mapped_vfs += numvfs;
+			if (rvu_cgx_is_mgmt_port(rvu, cgx, lmac))
+				continue;
+			__rvu_map_cgx_lmac_pf(rvu, pf, cgx, lmac);
 			pf++;
 		}
 	}
-- 
2.17.1