octeontx2-af: RPM: fix stale FCFEC counters

The corrected words register(FCFECX_VL0_CCW_LO)/Uncorrected words
register (FCFECX_VL0_NCCW_LO) of FCFEC counter has different LMAC
offset which needs to be accessed differently.

Fixes: 84ad364 ("octeontx2-af: Add FEC stats for RPM/RPM_USX block")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: Hariprasad Kelam

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

@@ -704,27 +704,27 @@ int rpm_get_fec_stats(void *rpmd, int lmac_id, struct cgx_fec_stats_rsp *rsp)
 	 */
 	mutex_lock(&rpm->lock);
 	if (rpm->lmac_idmap[lmac_id]->link_info.fec == OTX2_FEC_BASER) {
-		val_lo = rpm_read(rpm, lmac_id, RPMX_MTI_FCFECX_VL0_CCW_LO);
-		val_hi = rpm_read(rpm, lmac_id, RPMX_MTI_FCFECX_CW_HI);
+		val_lo = rpm_read(rpm, 0, RPMX_MTI_FCFECX_VL0_CCW_LO(lmac_id));
+		val_hi = rpm_read(rpm, 0, RPMX_MTI_FCFECX_CW_HI(lmac_id));
 		rsp->fec_corr_blks = (val_hi << 16 | val_lo);
 
-		val_lo = rpm_read(rpm, lmac_id, RPMX_MTI_FCFECX_VL0_NCCW_LO);
-		val_hi = rpm_read(rpm, lmac_id, RPMX_MTI_FCFECX_CW_HI);
+		val_lo = rpm_read(rpm, 0, RPMX_MTI_FCFECX_VL0_NCCW_LO(lmac_id));
+		val_hi = rpm_read(rpm, 0, RPMX_MTI_FCFECX_CW_HI(lmac_id));
 		rsp->fec_uncorr_blks = (val_hi << 16 | val_lo);
 
 		/* 50G uses 2 Physical serdes lines */
 		if (rpm->lmac_idmap[lmac_id]->link_info.lmac_type_id ==
 		    LMAC_MODE_50G_R) {
-			val_lo = rpm_read(rpm, lmac_id,
-					  RPMX_MTI_FCFECX_VL1_CCW_LO);
-			val_hi = rpm_read(rpm, lmac_id,
-					  RPMX_MTI_FCFECX_CW_HI);
+			val_lo = rpm_read(rpm, 0,
+					  RPMX_MTI_FCFECX_VL1_CCW_LO(lmac_id));
+			val_hi = rpm_read(rpm, 0,
+					  RPMX_MTI_FCFECX_CW_HI(lmac_id));
 			rsp->fec_corr_blks += (val_hi << 16 | val_lo);
 
-			val_lo = rpm_read(rpm, lmac_id,
-					  RPMX_MTI_FCFECX_VL1_NCCW_LO);
-			val_hi = rpm_read(rpm, lmac_id,
-					  RPMX_MTI_FCFECX_CW_HI);
+			val_lo = rpm_read(rpm, 0,
+					  RPMX_MTI_FCFECX_VL1_NCCW_LO(lmac_id));
+			val_hi = rpm_read(rpm, 0,
+					  RPMX_MTI_FCFECX_CW_HI(lmac_id));
 			rsp->fec_uncorr_blks += (val_hi << 16 | val_lo);
 		}
 	} else {

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

@@ -91,11 +91,11 @@
 #define RPMX_MTI_RSFEC_STAT_FAST_DATA_HI_CDC            0x40000
 #define RPMX_MTI_RSFEC_STAT_COUNTER_CAPTURE_2		0x40050
 #define RPMX_MTI_RSFEC_STAT_COUNTER_CAPTURE_3		0x40058
-#define RPMX_MTI_FCFECX_VL0_CCW_LO			0x38618
-#define RPMX_MTI_FCFECX_VL0_NCCW_LO			0x38620
-#define RPMX_MTI_FCFECX_VL1_CCW_LO			0x38628
-#define RPMX_MTI_FCFECX_VL1_NCCW_LO			0x38630
-#define RPMX_MTI_FCFECX_CW_HI				0x38638
+#define RPMX_MTI_FCFECX_VL0_CCW_LO(a)			(0x38618 + ((a) * 0x40))
+#define RPMX_MTI_FCFECX_VL0_NCCW_LO(a)			(0x38620 + ((a) * 0x40))
+#define RPMX_MTI_FCFECX_VL1_CCW_LO(a)			(0x38628 + ((a) * 0x40))
+#define RPMX_MTI_FCFECX_VL1_NCCW_LO(a)			(0x38630 + ((a) * 0x40))
+#define RPMX_MTI_FCFECX_CW_HI(a)			(0x38638 + ((a) * 0x40))
 
 /* CN10KB CSR Declaration */
 #define  RPM2_CMRX_SW_INT				0x1b0