diff mbox series

[net-next,v2,2/3] octeontx2-af: avoid RXC register access for CN10KB

Message ID 20240829080935.371281-3-schalla@marvell.com (mailing list archive)
State Accepted
Commit 1652623291c50a9ec4db3c416b7d01701b4012ff
Delegated to: Netdev Maintainers
Headers show
Series octeontx2-af: update CPT block for CN10KB and CN10KA B0 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 7 this patch: 7
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/build_clang success Errors and warnings before: 16 this patch: 16
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 23 this patch: 23
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 74 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-08-30--06-00 (tests: 714)

Commit Message

Srujana Challa Aug. 29, 2024, 8:09 a.m. UTC 
This patch modifies the driver to prevent access to RXC hardware
registers on the CN10KB, as RXC is not available on this chip.

Signed-off-by: Srujana Challa <schalla@marvell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 10 ++++++++++
 .../net/ethernet/marvell/octeontx2/af/rvu_cpt.c | 17 ++++++++++++++---
 2 files changed, 24 insertions(+), 3 deletions(-)

Comments

Simon Horman Aug. 30, 2024, 5:09 p.m. UTC | #1 
On Thu, Aug 29, 2024 at 01:39:34PM +0530, Srujana Challa wrote:
> This patch modifies the driver to prevent access to RXC hardware
> registers on the CN10KB, as RXC is not available on this chip.
> 
> Signed-off-by: Srujana Challa <schalla@marvell.com>

Reviewed-by: Simon Horman <horms@kernel.org>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 03ee93fd9e94..64c9c9ee000d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -400,6 +400,7 @@  struct hw_cap {
 	bool	nix_multiple_dwrr_mtu;   /* Multiple DWRR_MTU to choose from */
 	bool	npc_hash_extract; /* Hash extract enabled ? */
 	bool	npc_exact_match_enabled; /* Exact match supported ? */
+	bool    cpt_rxc;   /* Is CPT-RXC supported */
 };
 
 struct rvu_hwinfo {
@@ -690,6 +691,15 @@  static inline bool is_cnf10ka_a0(struct rvu *rvu)
 	return false;
 }
 
+static inline bool is_cn10kb(struct rvu *rvu)
+{
+	struct pci_dev *pdev = rvu->pdev;
+
+	if (pdev->subsystem_device == PCI_SUBSYS_DEVID_CN10K_B)
+		return true;
+	return false;
+}
+
 static inline bool is_rvu_npc_hash_extract_en(struct rvu *rvu)
 {
 	u64 npc_const3;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index cd5b21cb0427..d44614a63a7b 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -789,6 +789,8 @@  int rvu_mbox_handler_cpt_rd_wr_register(struct rvu *rvu,
 
 static void get_ctx_pc(struct rvu *rvu, struct cpt_sts_rsp *rsp, int blkaddr)
 {
+	struct rvu_hwinfo *hw = rvu->hw;
+
 	if (is_rvu_otx2(rvu))
 		return;
 
@@ -812,14 +814,16 @@  static void get_ctx_pc(struct rvu *rvu, struct cpt_sts_rsp *rsp, int blkaddr)
 	rsp->ctx_err = rvu_read64(rvu, blkaddr, CPT_AF_CTX_ERR);
 	rsp->ctx_enc_id = rvu_read64(rvu, blkaddr, CPT_AF_CTX_ENC_ID);
 	rsp->ctx_flush_timer = rvu_read64(rvu, blkaddr, CPT_AF_CTX_FLUSH_TIMER);
+	rsp->x2p_link_cfg0 = rvu_read64(rvu, blkaddr, CPT_AF_X2PX_LINK_CFG(0));
+	rsp->x2p_link_cfg1 = rvu_read64(rvu, blkaddr, CPT_AF_X2PX_LINK_CFG(1));
 
+	if (!hw->cap.cpt_rxc)
+		return;
 	rsp->rxc_time = rvu_read64(rvu, blkaddr, CPT_AF_RXC_TIME);
 	rsp->rxc_time_cfg = rvu_read64(rvu, blkaddr, CPT_AF_RXC_TIME_CFG);
 	rsp->rxc_active_sts = rvu_read64(rvu, blkaddr, CPT_AF_RXC_ACTIVE_STS);
 	rsp->rxc_zombie_sts = rvu_read64(rvu, blkaddr, CPT_AF_RXC_ZOMBIE_STS);
 	rsp->rxc_dfrg = rvu_read64(rvu, blkaddr, CPT_AF_RXC_DFRG);
-	rsp->x2p_link_cfg0 = rvu_read64(rvu, blkaddr, CPT_AF_X2PX_LINK_CFG(0));
-	rsp->x2p_link_cfg1 = rvu_read64(rvu, blkaddr, CPT_AF_X2PX_LINK_CFG(1));
 }
 
 static void get_eng_sts(struct rvu *rvu, struct cpt_sts_rsp *rsp, int blkaddr)
@@ -1004,10 +1008,11 @@  int rvu_mbox_handler_cpt_flt_eng_info(struct rvu *rvu, struct cpt_flt_eng_info_r
 static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 {
 	struct cpt_rxc_time_cfg_req req, prev;
+	struct rvu_hwinfo *hw = rvu->hw;
 	int timeout = 2000;
 	u64 reg;
 
-	if (is_rvu_otx2(rvu))
+	if (!hw->cap.cpt_rxc)
 		return;
 
 	/* Set time limit to minimum values, so that rxc entries will be
@@ -1282,8 +1287,14 @@  int rvu_cpt_ctx_flush(struct rvu *rvu, u16 pcifunc)
 
 int rvu_cpt_init(struct rvu *rvu)
 {
+	struct rvu_hwinfo *hw = rvu->hw;
+
 	/* Retrieve CPT PF number */
 	rvu->cpt_pf_num = get_cpt_pf_num(rvu);
+	if (is_block_implemented(rvu->hw, BLKADDR_CPT0) && !is_rvu_otx2(rvu) &&
+	    !is_cn10kb(rvu))
+		hw->cap.cpt_rxc = true;
+
 	spin_lock_init(&rvu->cpt_intr_lock);
 
 	return 0;