octeontx2-af: cn10k: Bandwidth profiles config support

CN10K silicons supports hierarchial ingress packet ratelimiting.
There are 3 levels of profilers supported leaf, mid and top.
Ratelimiting is done after packet forwarding decision is taken
and a NIXLF's RQ is identified to DMA the packet. RQ's context
points to a leaf bandwidth profile which can be configured
to achieve desired ratelimit.

This patch adds logic for management of these bandwidth profiles
ie profile alloc, free, context update etc.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -260,7 +260,11 @@ M(NIX_BP_DISABLE,	0x8017, nix_bp_disable, nix_bp_cfg_req, msg_rsp) \
 M(NIX_GET_MAC_ADDR, 0x8018, nix_get_mac_addr, msg_req, nix_get_mac_addr_rsp) \
 M(NIX_CN10K_AQ_ENQ,	0x8019, nix_cn10k_aq_enq, nix_cn10k_aq_enq_req, \
 				nix_cn10k_aq_enq_rsp)			\
-M(NIX_GET_HW_INFO,	0x801a, nix_get_hw_info, msg_req, nix_hw_info)
+M(NIX_GET_HW_INFO,	0x801c, nix_get_hw_info, msg_req, nix_hw_info)	\
+M(NIX_BANDPROF_ALLOC,	0x801d, nix_bandprof_alloc, nix_bandprof_alloc_req, \
+				nix_bandprof_alloc_rsp)			    \
+M(NIX_BANDPROF_FREE,	0x801e, nix_bandprof_free, nix_bandprof_free_req,   \
+				msg_rsp)
 
 /* Messages initiated by AF (range 0xC00 - 0xDFF) */
 #define MBOX_UP_CGX_MESSAGES						\
@@ -615,6 +619,9 @@ enum nix_af_status {
 	NIX_AF_ERR_PTP_CONFIG_FAIL  = -423,
 	NIX_AF_ERR_NPC_KEY_NOT_SUPP = -424,
 	NIX_AF_ERR_INVALID_NIXBLK   = -425,
+	NIX_AF_ERR_INVALID_BANDPROF = -426,
+	NIX_AF_ERR_IPOLICER_NOTSUPP = -427,
+	NIX_AF_ERR_BANDPROF_INVAL_REQ  = -428,
 };
 
 /* For NIX RX vtag action  */
@@ -683,6 +690,7 @@ struct nix_cn10k_aq_enq_req {
 		struct nix_cq_ctx_s cq;
 		struct nix_rsse_s   rss;
 		struct nix_rx_mce_s mce;
+		struct nix_bandprof_s prof;
 	};
 	union {
 		struct nix_cn10k_rq_ctx_s rq_mask;
@@ -690,6 +698,7 @@ struct nix_cn10k_aq_enq_req {
 		struct nix_cq_ctx_s cq_mask;
 		struct nix_rsse_s   rss_mask;
 		struct nix_rx_mce_s mce_mask;
+		struct nix_bandprof_s prof_mask;
 	};
 };
 
@@ -701,6 +710,7 @@ struct nix_cn10k_aq_enq_rsp {
 		struct nix_cq_ctx_s cq;
 		struct nix_rsse_s   rss;
 		struct nix_rx_mce_s mce;
+		struct nix_bandprof_s prof;
 	};
 };
 
@@ -716,6 +726,7 @@ struct nix_aq_enq_req {
 		struct nix_cq_ctx_s cq;
 		struct nix_rsse_s   rss;
 		struct nix_rx_mce_s mce;
+		u64 prof;
 	};
 	union {
 		struct nix_rq_ctx_s rq_mask;
@@ -723,6 +734,7 @@ struct nix_aq_enq_req {
 		struct nix_cq_ctx_s cq_mask;
 		struct nix_rsse_s   rss_mask;
 		struct nix_rx_mce_s mce_mask;
+		u64 prof_mask;
 	};
 };
 
@@ -734,6 +746,7 @@ struct nix_aq_enq_rsp {
 		struct nix_cq_ctx_s cq;
 		struct nix_rsse_s   rss;
 		struct nix_rx_mce_s mce;
+		u64 prof;
 	};
 };
 
@@ -975,6 +988,31 @@ struct nix_hw_info {
 	u16 min_mtu;
 };
 
+struct nix_bandprof_alloc_req {
+	struct mbox_msghdr hdr;
+	/* Count of profiles needed per layer */
+	u16 prof_count[BAND_PROF_NUM_LAYERS];
+};
+
+struct nix_bandprof_alloc_rsp {
+	struct mbox_msghdr hdr;
+	u16 prof_count[BAND_PROF_NUM_LAYERS];
+
+	/* There is no need to allocate morethan 1 bandwidth profile
+	 * per RQ of a PF_FUNC's NIXLF. So limit the maximum
+	 * profiles to 64 per PF_FUNC.
+	 */
+#define MAX_BANDPROF_PER_PFFUNC	64
+	u16 prof_idx[BAND_PROF_NUM_LAYERS][MAX_BANDPROF_PER_PFFUNC];
+};
+
+struct nix_bandprof_free_req {
+	struct mbox_msghdr hdr;
+	u8 free_all;
+	u16 prof_count[BAND_PROF_NUM_LAYERS];
+	u16 prof_idx[BAND_PROF_NUM_LAYERS][MAX_BANDPROF_PER_PFFUNC];
+};
+
 /* NPC mbox message structs */
 
 #define NPC_MCAM_ENTRY_INVALID	0xFFFF

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

@@ -296,6 +296,13 @@ struct nix_txvlan {
 	struct mutex rsrc_lock; /* Serialize resource alloc/free */
 };
 
+struct nix_ipolicer {
+	struct rsrc_bmap band_prof;
+	u16 *pfvf_map;
+	u16 *match_id;
+	u16 *ref_count;
+};
+
 struct nix_hw {
 	int blkaddr;
 	struct rvu *rvu;
@@ -305,6 +312,7 @@ struct nix_hw {
 	struct nix_mark_format mark_format;
 	struct nix_lso lso;
 	struct nix_txvlan txvlan;
+	struct nix_ipolicer *ipolicer;
 };
 
 /* RVU block's capabilities or functionality,
@@ -322,6 +330,7 @@ struct hw_cap {
 	bool	nix_rx_multicast;	 /* Rx packet replication support */
 	bool	per_pf_mbox_regs; /* PF mbox specified in per PF registers ? */
 	bool	programmable_chans; /* Channels programmable ? */
+	bool	ipolicer;
 };
 
 struct rvu_hwinfo {
@@ -672,6 +681,8 @@ int rvu_get_next_nix_blkaddr(struct rvu *rvu, int blkaddr);
 void rvu_nix_reset_mac(struct rvu_pfvf *pfvf, int pcifunc);
 int nix_get_struct_ptrs(struct rvu *rvu, u16 pcifunc,
 			struct nix_hw **nix_hw, int *blkaddr);
+int rvu_nix_setup_ratelimit_aggr(struct rvu *rvu, u16 pcifunc,
+				 u16 rq_idx, u16 match_id);
 
 /* NPC APIs */
 int rvu_npc_init(struct rvu *rvu);

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

@@ -1110,6 +1110,11 @@ static int npc_install_flow(struct rvu *rvu, int blkaddr, u16 target,
 	    req->vtag0_type == NIX_AF_LFX_RX_VTAG_TYPE7)
 		rule->vfvlan_cfg = true;
 
+	if (is_npc_intf_rx(req->intf) && req->match_id &&
+	    (req->op == NIX_RX_ACTIONOP_UCAST || req->op == NIX_RX_ACTIONOP_RSS))
+		return rvu_nix_setup_ratelimit_aggr(rvu, req->hdr.pcifunc,
+					     req->index, req->match_id);
+
 	return 0;
 }
 

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

@@ -171,6 +171,7 @@
 #define NIX_AF_SQ_CONST			(0x0040)
 #define NIX_AF_CQ_CONST			(0x0048)
 #define NIX_AF_RQ_CONST			(0x0050)
+#define NIX_AF_PL_CONST			(0x0058)
 #define NIX_AF_PSE_CONST		(0x0060)
 #define NIX_AF_TL1_CONST		(0x0070)
 #define NIX_AF_TL2_CONST		(0x0078)
@@ -181,6 +182,7 @@
 #define NIX_AF_LSO_CFG			(0x00A8)
 #define NIX_AF_BLK_RST			(0x00B0)
 #define NIX_AF_TX_TSTMP_CFG		(0x00C0)
+#define NIX_AF_PL_TS			(0x00C8)
 #define NIX_AF_RX_CFG			(0x00D0)
 #define NIX_AF_AVG_DELAY		(0x00E0)
 #define NIX_AF_CINT_DELAY		(0x00F0)
@@ -212,7 +214,9 @@
 #define NIX_AF_RX_DEF_OL2		(0x0200)
 #define NIX_AF_RX_DEF_OIP4		(0x0210)
 #define NIX_AF_RX_DEF_IIP4		(0x0220)
+#define NIX_AF_RX_DEF_VLAN0_PCP_DEI	(0x0228)
 #define NIX_AF_RX_DEF_OIP6		(0x0230)
+#define NIX_AF_RX_DEF_VLAN1_PCP_DEI	(0x0238)
 #define NIX_AF_RX_DEF_IIP6		(0x0240)
 #define NIX_AF_RX_DEF_OTCP		(0x0250)
 #define NIX_AF_RX_DEF_ITCP		(0x0260)
@@ -223,6 +227,10 @@
 #define NIX_AF_RX_DEF_ISCTP		(0x02A0)
 #define NIX_AF_RX_DEF_IPSECX		(0x02B0)
 #define NIX_AF_RX_DEF_CST_APAD1		(0x02A8)
+#define NIX_AF_RX_DEF_IIP4_DSCP		(0x02E0)
+#define NIX_AF_RX_DEF_OIP4_DSCP		(0x02E8)
+#define NIX_AF_RX_DEF_IIP6_DSCP		(0x02F0)
+#define NIX_AF_RX_DEF_OIP6_DSCP		(0x02F8)
 #define NIX_AF_RX_IPSEC_GEN_CFG		(0x0300)
 #define NIX_AF_RX_CPTX_INST_ADDR	(0x0310)
 #define NIX_AF_NDC_TX_SYNC		(0x03F0)

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

@@ -286,7 +286,7 @@ enum nix_aq_ctype {
 	NIX_AQ_CTYPE_MCE  = 0x3,
 	NIX_AQ_CTYPE_RSS  = 0x4,
 	NIX_AQ_CTYPE_DYNO = 0x5,
-	NIX_AQ_CTYPE_BAND_PROF = 0x6,
+	NIX_AQ_CTYPE_BANDPROF = 0x6,
 };
 
 /* NIX admin queue instruction opcodes */
@@ -665,6 +665,82 @@ struct nix_rx_mce_s {
 	uint64_t next       : 16;
 };
 
+enum nix_band_prof_layers {
+	BAND_PROF_LEAF_LAYER = 0,
+	BAND_PROF_INVAL_LAYER = 1,
+	BAND_PROF_MID_LAYER = 2,
+	BAND_PROF_TOP_LAYER = 3,
+	BAND_PROF_NUM_LAYERS = 4,
+};
+
+enum NIX_RX_BAND_PROF_ACTIONRESULT_E {
+	NIX_RX_BAND_PROF_ACTIONRESULT_PASS = 0x0,
+	NIX_RX_BAND_PROF_ACTIONRESULT_DROP = 0x1,
+	NIX_RX_BAND_PROF_ACTIONRESULT_RED = 0x2,
+};
+
+/* NIX ingress policer bandwidth profile structure */
+struct nix_bandprof_s {
+	uint64_t pc_mode                     :  2; /* W0 */
+	uint64_t icolor                      :  2;
+	uint64_t tnl_ena                     :  1;
+	uint64_t reserved_5_7                :  3;
+	uint64_t peir_exponent               :  5;
+	uint64_t reserved_13_15              :  3;
+	uint64_t pebs_exponent               :  5;
+	uint64_t reserved_21_23              :  3;
+	uint64_t cir_exponent                :  5;
+	uint64_t reserved_29_31              :  3;
+	uint64_t cbs_exponent                :  5;
+	uint64_t reserved_37_39              :  3;
+	uint64_t peir_mantissa               :  8;
+	uint64_t pebs_mantissa               :  8;
+	uint64_t cir_mantissa                :  8;
+	uint64_t cbs_mantissa                :  8; /* W1 */
+	uint64_t lmode                       :  1;
+	uint64_t l_sellect                   :  3;
+	uint64_t rdiv                        :  4;
+	uint64_t adjust_exponent             :  5;
+	uint64_t reserved_85_86              :  2;
+	uint64_t adjust_mantissa             :  9;
+	uint64_t gc_action                   :  2;
+	uint64_t yc_action                   :  2;
+	uint64_t rc_action                   :  2;
+	uint64_t meter_algo                  :  2;
+	uint64_t band_prof_id                :  7;
+	uint64_t reserved_111_118            :  8;
+	uint64_t hl_en                       :  1;
+	uint64_t reserved_120_127            :  8;
+	uint64_t ts                          : 48; /* W2 */
+	uint64_t reserved_176_191            : 16;
+	uint64_t pe_accum                    : 32; /* W3 */
+	uint64_t c_accum                     : 32;
+	uint64_t green_pkt_pass              : 48; /* W4 */
+	uint64_t reserved_304_319            : 16;
+	uint64_t yellow_pkt_pass             : 48; /* W5 */
+	uint64_t reserved_368_383            : 16;
+	uint64_t red_pkt_pass                : 48; /* W6 */
+	uint64_t reserved_432_447            : 16;
+	uint64_t green_octs_pass             : 48; /* W7 */
+	uint64_t reserved_496_511            : 16;
+	uint64_t yellow_octs_pass            : 48; /* W8 */
+	uint64_t reserved_560_575            : 16;
+	uint64_t red_octs_pass               : 48; /* W9 */
+	uint64_t reserved_624_639            : 16;
+	uint64_t green_pkt_drop              : 48; /* W10 */
+	uint64_t reserved_688_703            : 16;
+	uint64_t yellow_pkt_drop             : 48; /* W11 */
+	uint64_t reserved_752_767            : 16;
+	uint64_t red_pkt_drop                : 48; /* W12 */
+	uint64_t reserved_816_831            : 16;
+	uint64_t green_octs_drop             : 48; /* W13 */
+	uint64_t reserved_880_895            : 16;
+	uint64_t yellow_octs_drop            : 48; /* W14 */
+	uint64_t reserved_944_959            : 16;
+	uint64_t red_octs_drop               : 48; /* W15 */
+	uint64_t reserved_1008_1023          : 16;
+};
+
 enum nix_lsoalg {
 	NIX_LSOALG_NOP,
 	NIX_LSOALG_ADD_SEGNUM,