[net v4 PATCH 0/5] octeontx2-af: miscellaneous fixes

[net v4 PATCH 0/5] octeontx2-af: miscellaneous fixes

[Geetha sowjanya]

The series of patches fixes various issues related to mcs
and NIX link registers.

v3-v4:
 Used FIELD_PREP macro and proper data types.

v2-v3:
 Fixed typo error in patch 4 commit message.

v1-v2:
 Fixed author name for patch 5.
 Added Reviewed-by.

Geetha sowjanya (3):
  octeontx2-af: Fix mcs sa cam entries size
  octeontx2-af: Fix mcs stats register address
  octeontx2-af: Add missing mcs flr handler call

Nithin Dabilpuram (1):
  octeontx2-af: Adjust Tx credits when MCS external bypass is disabled

Rahul Bhansali (1):
  octeontx2-af: Update Tx link register range

 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  2 +-
 .../net/ethernet/marvell/octeontx2/af/mcs.c   | 16 ++++++++--
 .../net/ethernet/marvell/octeontx2/af/mcs.h   |  2 ++
 .../ethernet/marvell/octeontx2/af/mcs_reg.h   | 31 ++++++++++++++++---
 .../net/ethernet/marvell/octeontx2/af/rvu.c   |  3 ++
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |  1 +
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |  8 +++++
 .../ethernet/marvell/octeontx2/af/rvu_reg.c   |  4 +--
 8 files changed, 58 insertions(+), 9 deletions(-)

-- 
2.25.1

[net v4 PATCH 1/5] octeontx2-af: Adjust Tx credits when MCS external bypass is disabled

[Geetha sowjanya]

From: Nithin Dabilpuram <ndabilpuram@marvell.com>

When MCS external bypass is disabled, MCS returns additional
2 credits(32B) for every packet Tx'ed on LMAC. To account for
these extra credits, NIX_AF_TX_LINKX_NORM_CREDIT.CC_MCS_CNT
needs to be configured as otherwise NIX Tx credits would overflow
and will never be returned to idle state credit count
causing issues with credit control and MTU change.

This patch fixes the same by configuring CC_MCS_CNT at probe
time for MCS enabled SoC's

Fixes: bd69476e86fc ("octeontx2-af: cn10k: mcs: Install a default TCAM for normal traffic")
Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
v3-v4:
 Used FIELD_PREP macro and proper data types.

 drivers/net/ethernet/marvell/octeontx2/af/mcs.c    | 14 +++++++++++++-
 drivers/net/ethernet/marvell/octeontx2/af/mcs.h    |  2 ++
 drivers/net/ethernet/marvell/octeontx2/af/rvu.h    |  1 +
 .../net/ethernet/marvell/octeontx2/af/rvu_nix.c    |  8 ++++++++
 .../net/ethernet/marvell/octeontx2/af/rvu_reg.h    |  1 +
 5 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mcs.c b/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
index c43f19dfbd74..bd87507cf8ea 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
@@ -1219,6 +1219,17 @@ struct mcs *mcs_get_pdata(int mcs_id)
 	return NULL;
 }
 
+bool is_mcs_bypass(int mcs_id)
+{
+	struct mcs *mcs_dev;
+
+	list_for_each_entry(mcs_dev, &mcs_list, mcs_list) {
+		if (mcs_dev->mcs_id == mcs_id)
+			return mcs_dev->bypass;
+	}
+	return true;
+}
+
 void mcs_set_port_cfg(struct mcs *mcs, struct mcs_port_cfg_set_req *req)
 {
 	u64 val = 0;
@@ -1436,7 +1447,7 @@ static int mcs_x2p_calibration(struct mcs *mcs)
 	return err;
 }
 
-static void mcs_set_external_bypass(struct mcs *mcs, u8 bypass)
+static void mcs_set_external_bypass(struct mcs *mcs, bool bypass)
 {
 	u64 val;
 
@@ -1447,6 +1458,7 @@ static void mcs_set_external_bypass(struct mcs *mcs, u8 bypass)
 	else
 		val &= ~BIT_ULL(6);
 	mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
+	mcs->bypass = bypass;
 }
 
 static void mcs_global_cfg(struct mcs *mcs)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mcs.h b/drivers/net/ethernet/marvell/octeontx2/af/mcs.h
index 0f89dcb76465..f927cc61dfd2 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mcs.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mcs.h
@@ -149,6 +149,7 @@ struct mcs {
 	u16			num_vec;
 	void			*rvu;
 	u16			*tx_sa_active;
+	bool                      bypass;
 };
 
 struct mcs_ops {
@@ -206,6 +207,7 @@ void mcs_get_custom_tag_cfg(struct mcs *mcs, struct mcs_custom_tag_cfg_get_req *
 int mcs_alloc_ctrlpktrule(struct rsrc_bmap *rsrc, u16 *pf_map, u16 offset, u16 pcifunc);
 int mcs_free_ctrlpktrule(struct mcs *mcs, struct mcs_free_ctrl_pkt_rule_req *req);
 int mcs_ctrlpktrule_write(struct mcs *mcs, struct mcs_ctrl_pkt_rule_write_req *req);
+bool is_mcs_bypass(int mcs_id);
 
 /* CN10K-B APIs */
 void cn10kb_mcs_set_hw_capabilities(struct mcs *mcs);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index c4d999ef5ab4..cce2806aaa50 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -345,6 +345,7 @@ struct nix_hw {
 	struct nix_txvlan txvlan;
 	struct nix_ipolicer *ipolicer;
 	u64    *tx_credits;
+	u8	cc_mcs_cnt;
 };
 
 /* RVU block's capabilities or functionality,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index c112c71ff576..4227ebb4a758 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -12,6 +12,7 @@
 #include "rvu_reg.h"
 #include "rvu.h"
 #include "npc.h"
+#include "mcs.h"
 #include "cgx.h"
 #include "lmac_common.h"
 #include "rvu_npc_hash.h"
@@ -4389,6 +4390,12 @@ static void nix_link_config(struct rvu *rvu, int blkaddr,
 			    SDP_HW_MAX_FRS << 16 | NIC_HW_MIN_FRS);
 	}
 
+	/* Get MCS external bypass status for CN10K-B */
+	if (mcs_get_blkcnt() == 1) {
+		/* Adjust for 2 credits when external bypass is disabled */
+		nix_hw->cc_mcs_cnt = is_mcs_bypass(0) ? 0 : 2;
+	}
+
 	/* Set credits for Tx links assuming max packet length allowed.
 	 * This will be reconfigured based on MTU set for PF/VF.
 	 */
@@ -4412,6 +4419,7 @@ static void nix_link_config(struct rvu *rvu, int blkaddr,
 			tx_credits = (lmac_fifo_len - lmac_max_frs) / 16;
 			/* Enable credits and set credit pkt count to max allowed */
 			cfg =  (tx_credits << 12) | (0x1FF << 2) | BIT_ULL(1);
+			cfg |= FIELD_PREP(NIX_AF_LINKX_MCS_CNT_MASK, nix_hw->cc_mcs_cnt);
 
 			link = iter + slink;
 			nix_hw->tx_credits[link] = tx_credits;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h
index b42e631e52d0..18c1c9f361cc 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h
@@ -437,6 +437,7 @@
 
 #define NIX_AF_LINKX_BASE_MASK		GENMASK_ULL(11, 0)
 #define NIX_AF_LINKX_RANGE_MASK		GENMASK_ULL(19, 16)
+#define NIX_AF_LINKX_MCS_CNT_MASK	GENMASK_ULL(33, 32)
 
 /* SSO */
 #define SSO_AF_CONST			(0x1000)
-- 
2.25.1

[net v4 PATCH 2/5] octeontx2-af: Fix mcs sa cam entries size

[Geetha sowjanya]

On latest silicon versions SA cam entries increased to 256.
This patch fixes the datatype of sa_entries in mcs_hw_info
struct to u16 to hold 256 entries.

Fixes: 080bbd19c9dd ("octeontx2-af: cn10k: mcs: Add mailboxes for port related operations")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/mbox.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 6845556581c3..5df42634ceb8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1945,7 +1945,7 @@ struct mcs_hw_info {
 	u8 tcam_entries;	/* RX/TX Tcam entries per mcs block */
 	u8 secy_entries;	/* RX/TX SECY entries per mcs block */
 	u8 sc_entries;		/* RX/TX SC CAM entries per mcs block */
-	u8 sa_entries;		/* PN table entries = SA entries */
+	u16 sa_entries;		/* PN table entries = SA entries */
 	u64 rsvd[16];
 };
 
-- 
2.25.1

[net v4 PATCH 3/5] octeontx2-af: Fix mcs stats register address

[Geetha sowjanya]

This patch adds the miss mcs stats register
for mcs supported platforms.

Fixes: 9312150af8da ("octeontx2-af: cn10k: mcs: Support for stats collection")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
 .../net/ethernet/marvell/octeontx2/af/mcs.c   |  4 +--
 .../ethernet/marvell/octeontx2/af/mcs_reg.h   | 31 ++++++++++++++++---
 2 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mcs.c b/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
index bd87507cf8ea..c1775bd01c2b 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
@@ -117,7 +117,7 @@ void mcs_get_rx_secy_stats(struct mcs *mcs, struct mcs_secy_stats *stats, int id
 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYTAGGEDCTLX(id);
 	stats->pkt_tagged_ctl_cnt = mcs_reg_read(mcs, reg);
 
-	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDORNOTAGX(id);
+	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDX(id);
 	stats->pkt_untaged_cnt = mcs_reg_read(mcs, reg);
 
 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYCTLX(id);
@@ -215,7 +215,7 @@ void mcs_get_sc_stats(struct mcs *mcs, struct mcs_sc_stats *stats,
 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCNOTVALIDX(id);
 		stats->pkt_notvalid_cnt = mcs_reg_read(mcs, reg);
 
-		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCUNCHECKEDOROKX(id);
+		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCUNCHECKEDX(id);
 		stats->pkt_unchecked_cnt = mcs_reg_read(mcs, reg);
 
 		if (mcs->hw->mcs_blks > 1) {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mcs_reg.h b/drivers/net/ethernet/marvell/octeontx2/af/mcs_reg.h
index f3ab01fc363c..f4c6de89002c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mcs_reg.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mcs_reg.h
@@ -810,14 +810,37 @@
 		offset = 0x9d8ull;			\
 	offset; })
 
+#define MCSX_CSE_RX_MEM_SLAVE_INPKTSSCUNCHECKEDX(a) ({	\
+	u64 offset;					\
+							\
+	offset = 0xee80ull;				\
+	if (mcs->hw->mcs_blks > 1)			\
+		offset = 0xe818ull;			\
+	offset += (a) * 0x8ull;				\
+	offset; })
+
+#define MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDX(a) ({	\
+	u64 offset;					\
+							\
+	offset = 0xa680ull;				\
+	if (mcs->hw->mcs_blks > 1)			\
+		offset = 0xd018ull;			\
+	offset += (a) * 0x8ull;				\
+	offset; })
+
+#define MCSX_CSE_RX_MEM_SLAVE_INPKTSSCLATEORDELAYEDX(a)	({	\
+	u64 offset;						\
+								\
+	offset = 0xf680ull;					\
+	if (mcs->hw->mcs_blks > 1)				\
+		offset = 0xe018ull;				\
+	offset += (a) * 0x8ull;					\
+	offset; })
+
 #define MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCDECRYPTEDX(a)	(0xe680ull + (a) * 0x8ull)
 #define MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCVALIDATEX(a)	(0xde80ull + (a) * 0x8ull)
-#define MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDORNOTAGX(a)	(0xa680ull + (a) * 0x8ull)
 #define MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOTAGX(a)	(0xd218 + (a) * 0x8ull)
-#define MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDX(a)	(0xd018ull + (a) * 0x8ull)
-#define MCSX_CSE_RX_MEM_SLAVE_INPKTSSCUNCHECKEDOROKX(a)	(0xee80ull + (a) * 0x8ull)
 #define MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYCTLX(a)		(0xb680ull + (a) * 0x8ull)
-#define MCSX_CSE_RX_MEM_SLAVE_INPKTSSCLATEORDELAYEDX(a) (0xf680ull + (a) * 0x8ull)
 #define MCSX_CSE_RX_MEM_SLAVE_INPKTSSAINVALIDX(a)	(0x12680ull + (a) * 0x8ull)
 #define MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTUSINGSAERRORX(a) (0x15680ull + (a) * 0x8ull)
 #define MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTVALIDX(a)	(0x13680ull + (a) * 0x8ull)
-- 
2.25.1

[net v4 PATCH 4/5] octeontx2-af: Add missing mcs flr handler call

[Geetha sowjanya]

If mcs resources are attached to PF/VF. These resources need
to be freed on FLR. This patch add missing mcs flr call on PF FLR.

Fixes: bd69476e86fc ("octeontx2-af: cn10k: mcs: Install a default TCAM for normal traffic")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index 22c395c7d040..731bb82b577c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -2631,6 +2631,9 @@ static void __rvu_flr_handler(struct rvu *rvu, u16 pcifunc)
 	rvu_npc_free_mcam_entries(rvu, pcifunc, -1);
 	rvu_mac_reset(rvu, pcifunc);
 
+	if (rvu->mcs_blk_cnt)
+		rvu_mcs_flr_handler(rvu, pcifunc);
+
 	mutex_unlock(&rvu->flr_lock);
 }
 
-- 
2.25.1

[net v4 PATCH 5/5] octeontx2-af: Update Tx link register range

[Geetha sowjanya]

From: Rahul Bhansali <rbhansali@marvell.com>

On new silicons the TX channels for transmit level has increased.
This patch fixes the respective register offset range to
configure the newly added channels.

Fixes: b279bbb3314e ("octeontx2-af: NIX Tx scheduler queue config support")
Signed-off-by: Rahul Bhansali <rbhansali@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c
index b3150f053291..d46ac29adb96 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c
@@ -31,8 +31,8 @@ static struct hw_reg_map txsch_reg_map[NIX_TXSCH_LVL_CNT] = {
 	{NIX_TXSCH_LVL_TL4, 3, 0xFFFF, {{0x0B00, 0x0B08}, {0x0B10, 0x0B18},
 			      {0x1200, 0x12E0} } },
 	{NIX_TXSCH_LVL_TL3, 4, 0xFFFF, {{0x1000, 0x10E0}, {0x1600, 0x1608},
-			      {0x1610, 0x1618}, {0x1700, 0x17B0} } },
-	{NIX_TXSCH_LVL_TL2, 2, 0xFFFF, {{0x0E00, 0x0EE0}, {0x1700, 0x17B0} } },
+			      {0x1610, 0x1618}, {0x1700, 0x17C8} } },
+	{NIX_TXSCH_LVL_TL2, 2, 0xFFFF, {{0x0E00, 0x0EE0}, {0x1700, 0x17C8} } },
 	{NIX_TXSCH_LVL_TL1, 1, 0xFFFF, {{0x0C00, 0x0D98} } },
 };
 
-- 
2.25.1

Re: [net v4 PATCH 0/5] octeontx2-af: miscellaneous fixes

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Tue, 5 Dec 2023 13:34:29 +0530 you wrote:
> The series of patches fixes various issues related to mcs
> and NIX link registers.
> 
> v3-v4:
>  Used FIELD_PREP macro and proper data types.
> 
> v2-v3:
>  Fixed typo error in patch 4 commit message.
> 
> [...]

Here is the summary with links:
  - [net,v4,1/5] octeontx2-af: Adjust Tx credits when MCS external bypass is disabled
    https://git.kernel.org/netdev/net/c/dca6fa8644b8
  - [net,v4,2/5] octeontx2-af: Fix mcs sa cam entries size
    https://git.kernel.org/netdev/net/c/9723b2cca1f0
  - [net,v4,3/5] octeontx2-af: Fix mcs stats register address
    https://git.kernel.org/netdev/net/c/3ba98a8c6f8c
  - [net,v4,4/5] octeontx2-af: Add missing mcs flr handler call
    https://git.kernel.org/netdev/net/c/d431abd0a9aa
  - [net,v4,5/5] octeontx2-af: Update Tx link register range
    https://git.kernel.org/netdev/net/c/7336fc196748

You are awesome, thank you!
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