octeontx2-af: Add mailbox for CPT stats

Adds a new mailbox to get CPT stats, includes performance
counters, CPT engines status and RXC status.
Signed-off-by: NNarayana Prasad Raju Atherya <pathreya@marvell.com>
Signed-off-by: NSrujana Challa <schalla@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -177,6 +177,7 @@ M(CPT_LF_ALLOC,		0xA00, cpt_lf_alloc, cpt_lf_alloc_req_msg,	\
 M(CPT_LF_FREE,		0xA01, cpt_lf_free, msg_req, msg_rsp)		\
 M(CPT_RD_WR_REGISTER,	0xA02, cpt_rd_wr_register,  cpt_rd_wr_reg_msg,	\
 			       cpt_rd_wr_reg_msg)			\
+M(CPT_STATS,            0xA05, cpt_sts, cpt_sts_req, cpt_sts_rsp)	\
 M(CPT_RXC_TIME_CFG,     0xA06, cpt_rxc_time_cfg, cpt_rxc_time_cfg_req,  \
 			       msg_rsp)                                 \
 /* NPC mbox IDs (range 0x6000 - 0x7FFF) */				\
@@ -1257,6 +1258,53 @@ struct cpt_lf_alloc_req_msg {
 	int blkaddr;
 };
 
+/* Mailbox message request and response format for CPT stats. */
+struct cpt_sts_req {
+	struct mbox_msghdr hdr;
+	u8 blkaddr;
+};
+
+struct cpt_sts_rsp {
+	struct mbox_msghdr hdr;
+	u64 inst_req_pc;
+	u64 inst_lat_pc;
+	u64 rd_req_pc;
+	u64 rd_lat_pc;
+	u64 rd_uc_pc;
+	u64 active_cycles_pc;
+	u64 ctx_mis_pc;
+	u64 ctx_hit_pc;
+	u64 ctx_aop_pc;
+	u64 ctx_aop_lat_pc;
+	u64 ctx_ifetch_pc;
+	u64 ctx_ifetch_lat_pc;
+	u64 ctx_ffetch_pc;
+	u64 ctx_ffetch_lat_pc;
+	u64 ctx_wback_pc;
+	u64 ctx_wback_lat_pc;
+	u64 ctx_psh_pc;
+	u64 ctx_psh_lat_pc;
+	u64 ctx_err;
+	u64 ctx_enc_id;
+	u64 ctx_flush_timer;
+	u64 rxc_time;
+	u64 rxc_time_cfg;
+	u64 rxc_active_sts;
+	u64 rxc_zombie_sts;
+	u64 busy_sts_ae;
+	u64 free_sts_ae;
+	u64 busy_sts_se;
+	u64 free_sts_se;
+	u64 busy_sts_ie;
+	u64 free_sts_ie;
+	u64 exe_err_info;
+	u64 cptclk_cnt;
+	u64 diag;
+	u64 rxc_dfrg;
+	u64 x2p_link_cfg0;
+	u64 x2p_link_cfg1;
+};
+
 /* Mailbox message request format to configure reassembly timeout. */
 struct cpt_rxc_time_cfg_req {
 	struct mbox_msghdr hdr;

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

@@ -15,6 +15,24 @@
 /* Length of initial context fetch in 128 byte words */
 #define CPT_CTX_ILEN    2
 
+#define cpt_get_eng_sts(e_min, e_max, rsp, etype)                   \
+({                                                                  \
+	u64 free_sts = 0, busy_sts = 0;                             \
+	typeof(rsp) _rsp = rsp;                                     \
+	u32 e, i;                                                   \
+								    \
+	for (e = (e_min), i = 0; e < (e_max); e++, i++) {           \
+		reg = rvu_read64(rvu, blkaddr, CPT_AF_EXEX_STS(e)); \
+		if (reg & 0x1)                                      \
+			busy_sts |= 1ULL << i;                      \
+								    \
+		if (reg & 0x2)                                      \
+			free_sts |= 1ULL << i;                      \
+	}                                                           \
+	(_rsp)->busy_sts_##etype = busy_sts;                        \
+	(_rsp)->free_sts_##etype = free_sts;                        \
+})
+
 static int get_cpt_pf_num(struct rvu *rvu)
 {
 	int i, domain_nr, cpt_pf_num = -1;
@@ -264,6 +282,100 @@ int rvu_mbox_handler_cpt_rd_wr_register(struct rvu *rvu,
 	return 0;
 }
 
+static void get_ctx_pc(struct rvu *rvu, struct cpt_sts_rsp *rsp, int blkaddr)
+{
+	if (is_rvu_otx2(rvu))
+		return;
+
+	rsp->ctx_mis_pc = rvu_read64(rvu, blkaddr, CPT_AF_CTX_MIS_PC);
+	rsp->ctx_hit_pc = rvu_read64(rvu, blkaddr, CPT_AF_CTX_HIT_PC);
+	rsp->ctx_aop_pc = rvu_read64(rvu, blkaddr, CPT_AF_CTX_AOP_PC);
+	rsp->ctx_aop_lat_pc = rvu_read64(rvu, blkaddr,
+					 CPT_AF_CTX_AOP_LATENCY_PC);
+	rsp->ctx_ifetch_pc = rvu_read64(rvu, blkaddr, CPT_AF_CTX_IFETCH_PC);
+	rsp->ctx_ifetch_lat_pc = rvu_read64(rvu, blkaddr,
+					    CPT_AF_CTX_IFETCH_LATENCY_PC);
+	rsp->ctx_ffetch_pc = rvu_read64(rvu, blkaddr, CPT_AF_CTX_FFETCH_PC);
+	rsp->ctx_ffetch_lat_pc = rvu_read64(rvu, blkaddr,
+					    CPT_AF_CTX_FFETCH_LATENCY_PC);
+	rsp->ctx_wback_pc = rvu_read64(rvu, blkaddr, CPT_AF_CTX_FFETCH_PC);
+	rsp->ctx_wback_lat_pc = rvu_read64(rvu, blkaddr,
+					   CPT_AF_CTX_FFETCH_LATENCY_PC);
+	rsp->ctx_psh_pc = rvu_read64(rvu, blkaddr, CPT_AF_CTX_FFETCH_PC);
+	rsp->ctx_psh_lat_pc = rvu_read64(rvu, blkaddr,
+					 CPT_AF_CTX_FFETCH_LATENCY_PC);
+	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->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)
+{
+	u16 max_ses, max_ies, max_aes;
+	u32 e_min = 0, e_max = 0;
+	u64 reg;
+
+	reg = rvu_read64(rvu, blkaddr, CPT_AF_CONSTANTS1);
+	max_ses = reg & 0xffff;
+	max_ies = (reg >> 16) & 0xffff;
+	max_aes = (reg >> 32) & 0xffff;
+
+	/* Get AE status */
+	e_min = max_ses + max_ies;
+	e_max = max_ses + max_ies + max_aes;
+	cpt_get_eng_sts(e_min, e_max, rsp, ae);
+	/* Get SE status */
+	e_min = 0;
+	e_max = max_ses;
+	cpt_get_eng_sts(e_min, e_max, rsp, se);
+	/* Get IE status */
+	e_min = max_ses;
+	e_max = max_ses + max_ies;
+	cpt_get_eng_sts(e_min, e_max, rsp, ie);
+}
+
+int rvu_mbox_handler_cpt_sts(struct rvu *rvu, struct cpt_sts_req *req,
+			     struct cpt_sts_rsp *rsp)
+{
+	int blkaddr;
+
+	blkaddr = validate_and_get_cpt_blkaddr(req->blkaddr);
+	if (blkaddr < 0)
+		return blkaddr;
+
+	/* This message is accepted only if sent from CPT PF/VF */
+	if (!is_cpt_pf(rvu, req->hdr.pcifunc) &&
+	    !is_cpt_vf(rvu, req->hdr.pcifunc))
+		return CPT_AF_ERR_ACCESS_DENIED;
+
+	get_ctx_pc(rvu, rsp, blkaddr);
+
+	/* Get CPT engines status */
+	get_eng_sts(rvu, rsp, blkaddr);
+
+	/* Read CPT instruction PC registers */
+	rsp->inst_req_pc = rvu_read64(rvu, blkaddr, CPT_AF_INST_REQ_PC);
+	rsp->inst_lat_pc = rvu_read64(rvu, blkaddr, CPT_AF_INST_LATENCY_PC);
+	rsp->rd_req_pc = rvu_read64(rvu, blkaddr, CPT_AF_RD_REQ_PC);
+	rsp->rd_lat_pc = rvu_read64(rvu, blkaddr, CPT_AF_RD_LATENCY_PC);
+	rsp->rd_uc_pc = rvu_read64(rvu, blkaddr, CPT_AF_RD_UC_PC);
+	rsp->active_cycles_pc = rvu_read64(rvu, blkaddr,
+					   CPT_AF_ACTIVE_CYCLES_PC);
+	rsp->exe_err_info = rvu_read64(rvu, blkaddr, CPT_AF_EXE_ERR_INFO);
+	rsp->cptclk_cnt = rvu_read64(rvu, blkaddr, CPT_AF_CPTCLK_CNT);
+	rsp->diag = rvu_read64(rvu, blkaddr, CPT_AF_DIAG);
+
+	return 0;
+}
+
 #define RXC_ZOMBIE_THRES  GENMASK_ULL(59, 48)
 #define RXC_ZOMBIE_LIMIT  GENMASK_ULL(43, 32)
 #define RXC_ACTIVE_THRES  GENMASK_ULL(27, 16)