octeontx2-af: update CPT inbound inline IPsec config mailbox

Updates CPT inbound inline IPsec configure mailbox to take
CPT credit, opcode, credit_th and bpid from VF.
This patch also adds a mailbox to read inbound IPsec
configuration.
Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/mbox.h

@@ -297,6 +297,8 @@ M(NIX_BANDPROF_FREE,	0x801e, nix_bandprof_free, nix_bandprof_free_req,   \
 				msg_rsp)				    \
 M(NIX_BANDPROF_GET_HWINFO, 0x801f, nix_bandprof_get_hwinfo, msg_req,		\
 				nix_bandprof_get_hwinfo_rsp)		    \
+M(NIX_READ_INLINE_IPSEC_CFG, 0x8023, nix_read_inline_ipsec_cfg,		\
+				msg_req, nix_inline_ipsec_cfg)		\
 /* MCS mbox IDs (range 0xA000 - 0xBFFF) */					\
 M(MCS_ALLOC_RESOURCES,	0xa000, mcs_alloc_resources, mcs_alloc_rsrc_req,	\
 				mcs_alloc_rsrc_rsp)				\
@@ -1196,7 +1198,7 @@ struct nix_inline_ipsec_cfg {
 	u32 cpt_credit;
 	struct {
 		u8 egrp;
-		u8 opcode;
+		u16 opcode;
 		u16 param1;
 		u16 param2;
 	} gen_cfg;
@@ -1205,6 +1207,8 @@ struct nix_inline_ipsec_cfg {
 		u8 cpt_slot;
 	} inst_qsel;
 	u8 enable;
+	u16 bpid;
+	u32 credit_th;
 };
 
 /* Per NIX LF inline IPSec configuration */

drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c

@@ -4731,6 +4731,10 @@ int rvu_mbox_handler_nix_lso_format_cfg(struct rvu *rvu,
 #define CPT_INST_QSEL_PF_FUNC GENMASK_ULL(23, 8)
 #define CPT_INST_QSEL_SLOT    GENMASK_ULL(7, 0)
 
+#define CPT_INST_CREDIT_TH    GENMASK_ULL(53, 32)
+#define CPT_INST_CREDIT_BPID  GENMASK_ULL(30, 22)
+#define CPT_INST_CREDIT_CNT   GENMASK_ULL(21, 0)
+
 static void nix_inline_ipsec_cfg(struct rvu *rvu, struct nix_inline_ipsec_cfg *req,
 				 int blkaddr)
 {
@@ -4767,14 +4771,23 @@ static void nix_inline_ipsec_cfg(struct rvu *rvu, struct nix_inline_ipsec_cfg *r
 			    val);
 
 		/* Set CPT credit */
+		val = rvu_read64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx));
+		if ((val & 0x3FFFFF) != 0x3FFFFF)
 			rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
-			    req->cpt_credit);
+				    0x3FFFFF - val);
+
+		val = FIELD_PREP(CPT_INST_CREDIT_CNT, req->cpt_credit);
+		val |= FIELD_PREP(CPT_INST_CREDIT_BPID, req->bpid);
+		val |= FIELD_PREP(CPT_INST_CREDIT_TH, req->credit_th);
+		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx), val);
 	} else {
 		rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, 0x0);
 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx),
 			    0x0);
+		val = rvu_read64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx));
+		if ((val & 0x3FFFFF) != 0x3FFFFF)
 			rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
-			    0x3FFFFF);
+				    0x3FFFFF - val);
 	}
 }
 
@@ -4792,6 +4805,30 @@ int rvu_mbox_handler_nix_inline_ipsec_cfg(struct rvu *rvu,
 	return 0;
 }
 
+int rvu_mbox_handler_nix_read_inline_ipsec_cfg(struct rvu *rvu,
+					       struct msg_req *req,
+					       struct nix_inline_ipsec_cfg *rsp)
+
+{
+	u64 val;
+
+	if (!is_block_implemented(rvu->hw, BLKADDR_CPT0))
+		return 0;
+
+	val = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_RX_IPSEC_GEN_CFG);
+	rsp->gen_cfg.egrp = FIELD_GET(IPSEC_GEN_CFG_EGRP, val);
+	rsp->gen_cfg.opcode = FIELD_GET(IPSEC_GEN_CFG_OPCODE, val);
+	rsp->gen_cfg.param1 = FIELD_GET(IPSEC_GEN_CFG_PARAM1, val);
+	rsp->gen_cfg.param2 = FIELD_GET(IPSEC_GEN_CFG_PARAM2, val);
+
+	val = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_RX_CPTX_CREDIT(0));
+	rsp->cpt_credit = FIELD_GET(CPT_INST_CREDIT_CNT, val);
+	rsp->credit_th = FIELD_GET(CPT_INST_CREDIT_TH, val);
+	rsp->bpid = FIELD_GET(CPT_INST_CREDIT_BPID, val);
+
+	return 0;
+}
+
 int rvu_mbox_handler_nix_inline_ipsec_lf_cfg(struct rvu *rvu,
 					     struct nix_inline_ipsec_lf_cfg *req,
 					     struct msg_rsp *rsp)
@@ -4835,6 +4872,7 @@ int rvu_mbox_handler_nix_inline_ipsec_lf_cfg(struct rvu *rvu,
 
 	return 0;
 }
+
 void rvu_nix_reset_mac(struct rvu_pfvf *pfvf, int pcifunc)
 {
 	bool from_vf = !!(pcifunc & RVU_PFVF_FUNC_MASK);