linux-kernel - [net-next] Octeontx2-af: Fetch MAC channel info from firmware

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Date: Mon, 12 Feb 2024 18:45:23 +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] Octeontx2-af: Fetch MAC channel info from firmware

Packet ingress and egress MAC/serdes channel numbers are configurable
on CN10K series of silicons. These channel numbers inturn used while
installing MCAM rules to match ingress/egress port. Fetch these channel
numbers from firmware at driver init time.

Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu.h     | 10 +++++++++-
 drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c |  8 ++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index a1d5fc65b92d..de8eba902276 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -443,6 +443,13 @@ struct mbox_wq_info {
 	struct workqueue_struct *mbox_wq;
 };
 
+struct channel_fwdata {
+	struct sdp_node_info info;
+	u8 valid;
+#define RVU_CHANL_INFO_RESERVED	379
+	u8 reserved[RVU_CHANL_INFO_RESERVED];
+};
+
 struct rvu_fwdata {
 #define RVU_FWDATA_HEADER_MAGIC	0xCFDA	/* Custom Firmware Data*/
 #define RVU_FWDATA_VERSION	0x0001
@@ -461,7 +468,8 @@ struct rvu_fwdata {
 	u64 msixtr_base;
 	u32 ptp_ext_clk_rate;
 	u32 ptp_ext_tstamp;
-#define FWDATA_RESERVED_MEM 1022
+	struct channel_fwdata channel_data;
+#define FWDATA_RESERVED_MEM 1014
 	u64 reserved[FWDATA_RESERVED_MEM];
 #define CGX_MAX         9
 #define CGX_LMACS_MAX   4
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c
index 1edfda0ae3e8..38cfe148f4b7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_sdp.c
@@ -56,6 +56,14 @@ int rvu_sdp_init(struct rvu *rvu)
 	struct rvu_pfvf *pfvf;
 	u32 i = 0;
 
+	if (rvu->fwdata->channel_data.valid) {
+		sdp_pf_num[0] = 0;
+		pfvf = &rvu->pf[sdp_pf_num[0]];
+		pfvf->sdp_info = &rvu->fwdata->channel_data.info;
+
+		return 0;
+	}
+
 	while ((i < MAX_SDP) && (pdev = pci_get_device(PCI_VENDOR_ID_CAVIUM,
 						       PCI_DEVID_OTX2_SDP_PF,
 						       pdev)) != NULL) {
-- 
2.17.1