Resguardo inicial

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/Makefile

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for Marvell's RVU Ethernet device drivers
+#
+
+obj-$(CONFIG_OCTEONTX2_PF) += rvu_nicpf.o otx2_ptp.o
+obj-$(CONFIG_OCTEONTX2_VF) += rvu_nicvf.o otx2_ptp.o
+obj-$(CONFIG_RVU_ESWITCH) += rvu_rep.o
+
+rvu_nicpf-y := otx2_pf.o otx2_common.o otx2_txrx.o otx2_ethtool.o \
+               otx2_flows.o otx2_tc.o cn10k.o cn20k.o otx2_dmac_flt.o \
+               otx2_devlink.o qos_sq.o qos.o otx2_xsk.o
+rvu_nicvf-y := otx2_vf.o
+rvu_rep-y := rep.o
+
+rvu_nicpf-$(CONFIG_DCB) += otx2_dcbnl.o
+rvu_nicpf-$(CONFIG_MACSEC) += cn10k_macsec.o
+rvu_nicpf-$(CONFIG_XFRM_OFFLOAD) += cn10k_ipsec.o
+
+ccflags-y += -I$(srctree)/drivers/net/ethernet/marvell/octeontx2/af

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c

@@ -0,0 +1,520 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2021 Marvell.
+ *
+ */
+
+#include "cn10k.h"
+#include "otx2_reg.h"
+#include "otx2_struct.h"
+
+static struct dev_hw_ops	otx2_hw_ops = {
+	.sq_aq_init = otx2_sq_aq_init,
+	.sqe_flush = otx2_sqe_flush,
+	.aura_freeptr = otx2_aura_freeptr,
+	.refill_pool_ptrs = otx2_refill_pool_ptrs,
+	.pfaf_mbox_intr_handler = otx2_pfaf_mbox_intr_handler,
+	.aura_aq_init = otx2_aura_aq_init,
+	.pool_aq_init = otx2_pool_aq_init,
+};
+
+static struct dev_hw_ops cn10k_hw_ops = {
+	.sq_aq_init = cn10k_sq_aq_init,
+	.sqe_flush = cn10k_sqe_flush,
+	.aura_freeptr = cn10k_aura_freeptr,
+	.refill_pool_ptrs = cn10k_refill_pool_ptrs,
+	.pfaf_mbox_intr_handler = otx2_pfaf_mbox_intr_handler,
+	.aura_aq_init = otx2_aura_aq_init,
+	.pool_aq_init = otx2_pool_aq_init,
+};
+
+void otx2_init_hw_ops(struct otx2_nic *pfvf)
+{
+	if (!test_bit(CN10K_LMTST, &pfvf->hw.cap_flag)) {
+		pfvf->hw_ops = &otx2_hw_ops;
+		return;
+	}
+
+	pfvf->hw_ops = &cn10k_hw_ops;
+}
+EXPORT_SYMBOL(otx2_init_hw_ops);
+
+int cn10k_lmtst_init(struct otx2_nic *pfvf)
+{
+
+	struct lmtst_tbl_setup_req *req;
+	struct otx2_lmt_info *lmt_info;
+	int err, cpu;
+
+	if (!test_bit(CN10K_LMTST, &pfvf->hw.cap_flag))
+		return 0;
+
+	/* Total LMTLINES = num_online_cpus() * 32 (For Burst flush).*/
+	pfvf->tot_lmt_lines = (num_online_cpus() * LMT_BURST_SIZE);
+	pfvf->hw.lmt_info = alloc_percpu(struct otx2_lmt_info);
+
+	mutex_lock(&pfvf->mbox.lock);
+	req = otx2_mbox_alloc_msg_lmtst_tbl_setup(&pfvf->mbox);
+	if (!req) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	req->use_local_lmt_region = true;
+
+	err = qmem_alloc(pfvf->dev, &pfvf->dync_lmt, pfvf->tot_lmt_lines,
+			 LMT_LINE_SIZE);
+	if (err) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return err;
+	}
+	pfvf->hw.lmt_base = (u64 *)pfvf->dync_lmt->base;
+	req->lmt_iova = (u64)pfvf->dync_lmt->iova;
+
+	err = otx2_sync_mbox_msg(&pfvf->mbox);
+	mutex_unlock(&pfvf->mbox.lock);
+
+	for_each_possible_cpu(cpu) {
+		lmt_info = per_cpu_ptr(pfvf->hw.lmt_info, cpu);
+		lmt_info->lmt_addr = ((u64)pfvf->hw.lmt_base +
+				      (cpu * LMT_BURST_SIZE * LMT_LINE_SIZE));
+		lmt_info->lmt_id = cpu * LMT_BURST_SIZE;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(cn10k_lmtst_init);
+
+int cn10k_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura)
+{
+	struct nix_cn10k_aq_enq_req *aq;
+	struct otx2_nic *pfvf = dev;
+
+	/* Get memory to put this msg */
+	aq = otx2_mbox_alloc_msg_nix_cn10k_aq_enq(&pfvf->mbox);
+	if (!aq)
+		return -ENOMEM;
+
+	aq->sq.cq = pfvf->hw.rx_queues + qidx;
+	aq->sq.max_sqe_size = NIX_MAXSQESZ_W16; /* 128 byte */
+	aq->sq.cq_ena = 1;
+	aq->sq.ena = 1;
+	aq->sq.smq = otx2_get_smq_idx(pfvf, qidx);
+	aq->sq.smq_rr_weight = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen);
+	aq->sq.default_chan = pfvf->hw.tx_chan_base + chan_offset;
+	aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */
+	aq->sq.sqb_aura = sqb_aura;
+	aq->sq.sq_int_ena = NIX_SQINT_BITS;
+	aq->sq.qint_idx = 0;
+	/* Due pipelining impact minimum 2000 unused SQ CQE's
+	 * need to maintain to avoid CQ overflow.
+	 */
+	aq->sq.cq_limit = ((SEND_CQ_SKID * 256) / (pfvf->qset.sqe_cnt));
+
+	/* Fill AQ info */
+	aq->qidx = qidx;
+	aq->ctype = NIX_AQ_CTYPE_SQ;
+	aq->op = NIX_AQ_INSTOP_INIT;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+}
+
+#define NPA_MAX_BURST 16
+int cn10k_refill_pool_ptrs(void *dev, struct otx2_cq_queue *cq)
+{
+	struct otx2_nic *pfvf = dev;
+	int cnt = cq->pool_ptrs;
+	u64 ptrs[NPA_MAX_BURST];
+	struct otx2_pool *pool;
+	dma_addr_t bufptr;
+	int num_ptrs = 1;
+
+	pool = &pfvf->qset.pool[cq->cq_idx];
+
+	/* Refill pool with new buffers */
+	while (cq->pool_ptrs) {
+		if (otx2_alloc_buffer(pfvf, cq, &bufptr)) {
+			if (num_ptrs--)
+				__cn10k_aura_freeptr(pfvf, cq->cq_idx, ptrs,
+						     num_ptrs);
+			break;
+		}
+		cq->pool_ptrs--;
+		ptrs[num_ptrs] = pool->xsk_pool ?
+				 (u64)bufptr : (u64)bufptr + OTX2_HEAD_ROOM;
+
+		num_ptrs++;
+		if (num_ptrs == NPA_MAX_BURST || cq->pool_ptrs == 0) {
+			__cn10k_aura_freeptr(pfvf, cq->cq_idx, ptrs,
+					     num_ptrs);
+			num_ptrs = 1;
+		}
+	}
+	return cnt - cq->pool_ptrs;
+}
+
+void cn10k_sqe_flush(void *dev, struct otx2_snd_queue *sq, int size, int qidx)
+{
+	struct otx2_lmt_info *lmt_info;
+	struct otx2_nic *pfvf = dev;
+	u64 val = 0, tar_addr = 0;
+
+	lmt_info = per_cpu_ptr(pfvf->hw.lmt_info, smp_processor_id());
+	/* FIXME: val[0:10] LMT_ID.
+	 * [12:15] no of LMTST - 1 in the burst.
+	 * [19:63] data size of each LMTST in the burst except first.
+	 */
+	val = (lmt_info->lmt_id & 0x7FF);
+	/* Target address for LMTST flush tells HW how many 128bit
+	 * words are present.
+	 * tar_addr[6:4] size of first LMTST - 1 in units of 128b.
+	 */
+	tar_addr |= sq->io_addr | (((size / 16) - 1) & 0x7) << 4;
+	dma_wmb();
+	memcpy((u64 *)lmt_info->lmt_addr, sq->sqe_base, size);
+	cn10k_lmt_flush(val, tar_addr);
+
+	sq->head++;
+	sq->head &= (sq->sqe_cnt - 1);
+}
+
+int cn10k_free_all_ipolicers(struct otx2_nic *pfvf)
+{
+	struct nix_bandprof_free_req *req;
+	int rc;
+
+	if (is_dev_otx2(pfvf->pdev))
+		return 0;
+
+	mutex_lock(&pfvf->mbox.lock);
+
+	req = otx2_mbox_alloc_msg_nix_bandprof_free(&pfvf->mbox);
+	if (!req) {
+		rc =  -ENOMEM;
+		goto out;
+	}
+
+	/* Free all bandwidth profiles allocated */
+	req->free_all = true;
+
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+out:
+	mutex_unlock(&pfvf->mbox.lock);
+	return rc;
+}
+
+int cn10k_alloc_leaf_profile(struct otx2_nic *pfvf, u16 *leaf)
+{
+	struct nix_bandprof_alloc_req *req;
+	struct nix_bandprof_alloc_rsp *rsp;
+	int rc;
+
+	req = otx2_mbox_alloc_msg_nix_bandprof_alloc(&pfvf->mbox);
+	if (!req)
+		return  -ENOMEM;
+
+	req->prof_count[BAND_PROF_LEAF_LAYER] = 1;
+
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+	if (rc)
+		goto out;
+
+	rsp = (struct  nix_bandprof_alloc_rsp *)
+	       otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
+	if (IS_ERR(rsp)) {
+		rc = PTR_ERR(rsp);
+		goto out;
+	}
+
+	if (!rsp->prof_count[BAND_PROF_LEAF_LAYER]) {
+		rc = -EIO;
+		goto out;
+	}
+
+	*leaf = rsp->prof_idx[BAND_PROF_LEAF_LAYER][0];
+out:
+	if (rc) {
+		dev_warn(pfvf->dev,
+			 "Failed to allocate ingress bandwidth policer\n");
+	}
+
+	return rc;
+}
+
+int cn10k_alloc_matchall_ipolicer(struct otx2_nic *pfvf)
+{
+	struct otx2_hw *hw = &pfvf->hw;
+	int ret;
+
+	mutex_lock(&pfvf->mbox.lock);
+
+	ret = cn10k_alloc_leaf_profile(pfvf, &hw->matchall_ipolicer);
+
+	mutex_unlock(&pfvf->mbox.lock);
+
+	return ret;
+}
+
+#define POLICER_TIMESTAMP	  1  /* 1 second */
+#define MAX_RATE_EXP		  22 /* Valid rate exponent range: 0 - 22 */
+
+static void cn10k_get_ingress_burst_cfg(u32 burst, u32 *burst_exp,
+					u32 *burst_mantissa)
+{
+	int tmp;
+
+	/* Burst is calculated as
+	 * (1+[BURST_MANTISSA]/256)*2^[BURST_EXPONENT]
+	 * This is the upper limit on number tokens (bytes) that
+	 * can be accumulated in the bucket.
+	 */
+	*burst_exp = ilog2(burst);
+	if (burst < 256) {
+		/* No float: can't express mantissa in this case */
+		*burst_mantissa = 0;
+		return;
+	}
+
+	if (*burst_exp > MAX_RATE_EXP)
+		*burst_exp = MAX_RATE_EXP;
+
+	/* Calculate mantissa
+	 * Find remaining bytes 'burst - 2^burst_exp'
+	 * mantissa = (remaining bytes) / 2^ (burst_exp - 8)
+	 */
+	tmp = burst - rounddown_pow_of_two(burst);
+	*burst_mantissa = tmp / (1UL << (*burst_exp - 8));
+}
+
+static void cn10k_get_ingress_rate_cfg(u64 rate, u32 *rate_exp,
+				       u32 *rate_mantissa, u32 *rdiv)
+{
+	u32 div = 0;
+	u32 exp = 0;
+	u64 tmp;
+
+	/* Figure out mantissa, exponent and divider from given max pkt rate
+	 *
+	 * To achieve desired rate HW adds
+	 * (1+[RATE_MANTISSA]/256)*2^[RATE_EXPONENT] tokens (bytes) at every
+	 * policer timeunit * 2^rdiv ie 2 * 2^rdiv usecs, to the token bucket.
+	 * Here policer timeunit is 2 usecs and rate is in bits per sec.
+	 * Since floating point cannot be used below algorithm uses 1000000
+	 * scale factor to support rates upto 100Gbps.
+	 */
+	tmp = rate * 32 * 2;
+	if (tmp < 256000000) {
+		while (tmp < 256000000) {
+			tmp = tmp * 2;
+			div++;
+		}
+	} else {
+		for (exp = 0; tmp >= 512000000 && exp <= MAX_RATE_EXP; exp++)
+			tmp = tmp / 2;
+
+		if (exp > MAX_RATE_EXP)
+			exp = MAX_RATE_EXP;
+	}
+
+	*rate_mantissa = (tmp - 256000000) / 1000000;
+	*rate_exp = exp;
+	*rdiv = div;
+}
+
+int cn10k_map_unmap_rq_policer(struct otx2_nic *pfvf, int rq_idx,
+			       u16 policer, bool map)
+{
+	struct nix_cn10k_aq_enq_req *aq;
+
+	aq = otx2_mbox_alloc_msg_nix_cn10k_aq_enq(&pfvf->mbox);
+	if (!aq)
+		return -ENOMEM;
+
+	/* Enable policing and set the bandwidth profile (policer) index */
+	if (map)
+		aq->rq.policer_ena = 1;
+	else
+		aq->rq.policer_ena = 0;
+	aq->rq_mask.policer_ena = 1;
+
+	aq->rq.band_prof_id = policer;
+	aq->rq_mask.band_prof_id = GENMASK(9, 0);
+
+	/* If policer id is greater than 1023 then it implies hardware supports
+	 * more leaf profiles. In that case use band_prof_id_h for 4 MSBs.
+	 */
+	aq->rq.band_prof_id_h = policer >> 10;
+	aq->rq_mask.band_prof_id_h = GENMASK(3, 0);
+
+	/* Fill AQ info */
+	aq->qidx = rq_idx;
+	aq->ctype = NIX_AQ_CTYPE_RQ;
+	aq->op = NIX_AQ_INSTOP_WRITE;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+}
+
+int cn10k_free_leaf_profile(struct otx2_nic *pfvf, u16 leaf)
+{
+	struct nix_bandprof_free_req *req;
+
+	req = otx2_mbox_alloc_msg_nix_bandprof_free(&pfvf->mbox);
+	if (!req)
+		return -ENOMEM;
+
+	req->prof_count[BAND_PROF_LEAF_LAYER] = 1;
+	req->prof_idx[BAND_PROF_LEAF_LAYER][0] = leaf;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+}
+
+int cn10k_free_matchall_ipolicer(struct otx2_nic *pfvf)
+{
+	struct otx2_hw *hw = &pfvf->hw;
+	int qidx, rc;
+
+	mutex_lock(&pfvf->mbox.lock);
+
+	/* Remove RQ's policer mapping */
+	for (qidx = 0; qidx < hw->rx_queues; qidx++) {
+		rc = cn10k_map_unmap_rq_policer(pfvf, qidx, hw->matchall_ipolicer, false);
+		if (rc)
+			dev_warn(pfvf->dev, "Failed to unmap RQ %d's policer (error %d).",
+				 qidx, rc);
+	}
+
+	rc = cn10k_free_leaf_profile(pfvf, hw->matchall_ipolicer);
+
+	mutex_unlock(&pfvf->mbox.lock);
+	return rc;
+}
+
+int cn10k_set_ipolicer_rate(struct otx2_nic *pfvf, u16 profile,
+			    u32 burst, u64 rate, bool pps)
+{
+	struct nix_cn10k_aq_enq_req *aq;
+	u32 burst_exp, burst_mantissa;
+	u32 rate_exp, rate_mantissa;
+	u32 rdiv;
+
+	/* Get exponent and mantissa values for the desired rate */
+	cn10k_get_ingress_burst_cfg(burst, &burst_exp, &burst_mantissa);
+	cn10k_get_ingress_rate_cfg(rate, &rate_exp, &rate_mantissa, &rdiv);
+
+	/* Init bandwidth profile */
+	aq = otx2_mbox_alloc_msg_nix_cn10k_aq_enq(&pfvf->mbox);
+	if (!aq)
+		return -ENOMEM;
+
+	/* Set initial color mode to blind */
+	aq->prof.icolor = 0x03;
+	aq->prof_mask.icolor = 0x03;
+
+	/* Set rate and burst values */
+	aq->prof.cir_exponent = rate_exp;
+	aq->prof_mask.cir_exponent = 0x1F;
+
+	aq->prof.cir_mantissa = rate_mantissa;
+	aq->prof_mask.cir_mantissa = 0xFF;
+
+	aq->prof.cbs_exponent = burst_exp;
+	aq->prof_mask.cbs_exponent = 0x1F;
+
+	aq->prof.cbs_mantissa = burst_mantissa;
+	aq->prof_mask.cbs_mantissa = 0xFF;
+
+	aq->prof.rdiv = rdiv;
+	aq->prof_mask.rdiv = 0xF;
+
+	if (pps) {
+		/* The amount of decremented tokens is calculated according to
+		 * the following equation:
+		 * max([ LMODE ? 0 : (packet_length - LXPTR)] +
+		 *	     ([ADJUST_MANTISSA]/256 - 1) * 2^[ADJUST_EXPONENT],
+		 *	1/256)
+		 * if LMODE is 1 then rate limiting will be based on
+		 * PPS otherwise bps.
+		 * The aim of the ADJUST value is to specify a token cost per
+		 * packet in contrary to the packet length that specifies a
+		 * cost per byte. To rate limit based on PPS adjust mantissa
+		 * is set as 384 and exponent as 1 so that number of tokens
+		 * decremented becomes 1 i.e, 1 token per packeet.
+		 */
+		aq->prof.adjust_exponent = 1;
+		aq->prof_mask.adjust_exponent = 0x1F;
+
+		aq->prof.adjust_mantissa = 384;
+		aq->prof_mask.adjust_mantissa = 0x1FF;
+
+		aq->prof.lmode = 0x1;
+		aq->prof_mask.lmode = 0x1;
+	}
+
+	/* Two rate three color marker
+	 * With PEIR/EIR set to zero, color will be either green or red
+	 */
+	aq->prof.meter_algo = 2;
+	aq->prof_mask.meter_algo = 0x3;
+
+	aq->prof.rc_action = NIX_RX_BAND_PROF_ACTIONRESULT_DROP;
+	aq->prof_mask.rc_action = 0x3;
+
+	aq->prof.yc_action = NIX_RX_BAND_PROF_ACTIONRESULT_PASS;
+	aq->prof_mask.yc_action = 0x3;
+
+	aq->prof.gc_action = NIX_RX_BAND_PROF_ACTIONRESULT_PASS;
+	aq->prof_mask.gc_action = 0x3;
+
+	/* Setting exponent value as 24 and mantissa as 0 configures
+	 * the bucket with zero values making bucket unused. Peak
+	 * information rate and Excess information rate buckets are
+	 * unused here.
+	 */
+	aq->prof.peir_exponent = 24;
+	aq->prof_mask.peir_exponent = 0x1F;
+
+	aq->prof.peir_mantissa = 0;
+	aq->prof_mask.peir_mantissa = 0xFF;
+
+	aq->prof.pebs_exponent = 24;
+	aq->prof_mask.pebs_exponent = 0x1F;
+
+	aq->prof.pebs_mantissa = 0;
+	aq->prof_mask.pebs_mantissa = 0xFF;
+
+	aq->prof.hl_en = 0;
+	aq->prof_mask.hl_en = 1;
+
+	/* Fill AQ info */
+	aq->qidx = profile;
+	aq->ctype = NIX_AQ_CTYPE_BANDPROF;
+	aq->op = NIX_AQ_INSTOP_WRITE;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+}
+
+int cn10k_set_matchall_ipolicer_rate(struct otx2_nic *pfvf,
+				     u32 burst, u64 rate)
+{
+	struct otx2_hw *hw = &pfvf->hw;
+	int qidx, rc;
+
+	mutex_lock(&pfvf->mbox.lock);
+
+	rc = cn10k_set_ipolicer_rate(pfvf, hw->matchall_ipolicer, burst,
+				     rate, false);
+	if (rc)
+		goto out;
+
+	for (qidx = 0; qidx < hw->rx_queues; qidx++) {
+		rc = cn10k_map_unmap_rq_policer(pfvf, qidx,
+						hw->matchall_ipolicer, true);
+		if (rc)
+			break;
+	}
+
+out:
+	mutex_unlock(&pfvf->mbox.lock);
+	return rc;
+}

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.h

@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2021 Marvell.
+ *
+ */
+
+#ifndef CN10K_H
+#define CN10K_H
+
+#include "otx2_common.h"
+
+static inline int mtu_to_dwrr_weight(struct otx2_nic *pfvf, int mtu)
+{
+	u32 weight;
+
+	/* On OTx2, since AF returns DWRR_MTU as '1', this logic
+	 * will work on those silicons as well.
+	 */
+	weight = mtu / pfvf->hw.dwrr_mtu;
+	if (mtu % pfvf->hw.dwrr_mtu)
+		weight += 1;
+
+	return weight;
+}
+
+int cn10k_refill_pool_ptrs(void *dev, struct otx2_cq_queue *cq);
+void cn10k_sqe_flush(void *dev, struct otx2_snd_queue *sq, int size, int qidx);
+int cn10k_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura);
+int cn10k_lmtst_init(struct otx2_nic *pfvf);
+int cn10k_free_all_ipolicers(struct otx2_nic *pfvf);
+int cn10k_alloc_matchall_ipolicer(struct otx2_nic *pfvf);
+int cn10k_free_matchall_ipolicer(struct otx2_nic *pfvf);
+int cn10k_set_matchall_ipolicer_rate(struct otx2_nic *pfvf,
+				     u32 burst, u64 rate);
+int cn10k_map_unmap_rq_policer(struct otx2_nic *pfvf, int rq_idx,
+			       u16 policer, bool map);
+int cn10k_alloc_leaf_profile(struct otx2_nic *pfvf, u16 *leaf);
+int cn10k_set_ipolicer_rate(struct otx2_nic *pfvf, u16 profile,
+			    u32 burst, u64 rate, bool pps);
+int cn10k_free_leaf_profile(struct otx2_nic *pfvf, u16 leaf);
+void otx2_init_hw_ops(struct otx2_nic *pfvf);
+#endif /* CN10K_H */

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/cn10k_ipsec.h

@@ -0,0 +1,265 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell IPSEC offload driver
+ *
+ * Copyright (C) 2024 Marvell.
+ */
+
+#ifndef CN10K_IPSEC_H
+#define CN10K_IPSEC_H
+
+#include <linux/types.h>
+
+DECLARE_STATIC_KEY_FALSE(cn10k_ipsec_sa_enabled);
+
+/* CPT instruction size in bytes */
+#define CN10K_CPT_INST_SIZE	64
+
+/* CPT instruction (CPT_INST_S) queue length */
+#define CN10K_CPT_INST_QLEN	8200
+
+/* CPT instruction queue size passed to HW is in units of
+ * 40*CPT_INST_S messages.
+ */
+#define CN10K_CPT_SIZE_DIV40 (CN10K_CPT_INST_QLEN / 40)
+
+/* CPT needs 320 free entries */
+#define CN10K_CPT_INST_QLEN_EXTRA_BYTES	(320 * CN10K_CPT_INST_SIZE)
+#define CN10K_CPT_EXTRA_SIZE_DIV40	(320 / 40)
+
+/* CPT instruction queue length in bytes */
+#define CN10K_CPT_INST_QLEN_BYTES					\
+		((CN10K_CPT_SIZE_DIV40 * 40 * CN10K_CPT_INST_SIZE) +	\
+		CN10K_CPT_INST_QLEN_EXTRA_BYTES)
+
+/* CPT instruction group queue length in bytes */
+#define CN10K_CPT_INST_GRP_QLEN_BYTES					\
+		((CN10K_CPT_SIZE_DIV40 + CN10K_CPT_EXTRA_SIZE_DIV40) * 16)
+
+/* CPT FC length in bytes */
+#define CN10K_CPT_Q_FC_LEN 128
+
+/* Default CPT engine group for ipsec offload */
+#define CN10K_DEF_CPT_IPSEC_EGRP 1
+
+/* CN10K CPT LF registers */
+#define CPT_LFBASE			(BLKTYPE_CPT << RVU_FUNC_BLKADDR_SHIFT)
+#define CN10K_CPT_LF_CTL		(CPT_LFBASE | 0x10)
+#define CN10K_CPT_LF_INPROG		(CPT_LFBASE | 0x40)
+#define CN10K_CPT_LF_Q_BASE		(CPT_LFBASE | 0xf0)
+#define CN10K_CPT_LF_Q_SIZE		(CPT_LFBASE | 0x100)
+#define CN10K_CPT_LF_Q_INST_PTR		(CPT_LFBASE | 0x110)
+#define CN10K_CPT_LF_Q_GRP_PTR		(CPT_LFBASE | 0x120)
+#define CN10K_CPT_LF_NQX(a)		(CPT_LFBASE | 0x400 | (a) << 3)
+#define CN10K_CPT_LF_CTX_FLUSH		(CPT_LFBASE | 0x510)
+
+/* IPSEC Instruction opcodes */
+#define CN10K_IPSEC_MAJOR_OP_WRITE_SA 0x01UL
+#define CN10K_IPSEC_MINOR_OP_WRITE_SA 0x09UL
+#define CN10K_IPSEC_MAJOR_OP_OUTB_IPSEC 0x2AUL
+
+enum cn10k_cpt_comp_e {
+	CN10K_CPT_COMP_E_NOTDONE = 0x00,
+	CN10K_CPT_COMP_E_GOOD = 0x01,
+	CN10K_CPT_COMP_E_FAULT = 0x02,
+	CN10K_CPT_COMP_E_HWERR = 0x04,
+	CN10K_CPT_COMP_E_INSTERR = 0x05,
+	CN10K_CPT_COMP_E_WARN = 0x06,
+	CN10K_CPT_COMP_E_MASK = 0x3F
+};
+
+struct cn10k_cpt_inst_queue {
+	u8 *vaddr;
+	u8 *real_vaddr;
+	dma_addr_t dma_addr;
+	dma_addr_t real_dma_addr;
+	u32 size;
+};
+
+enum cn10k_cpt_hw_state_e {
+	CN10K_CPT_HW_UNAVAILABLE,
+	CN10K_CPT_HW_AVAILABLE,
+	CN10K_CPT_HW_IN_USE
+};
+
+struct cn10k_ipsec {
+	/* Outbound CPT */
+	u64 io_addr;
+	atomic_t cpt_state;
+	struct cn10k_cpt_inst_queue iq;
+
+	/* SA info */
+	u32 sa_size;
+	u32 outb_sa_count;
+	struct work_struct sa_work;
+	struct workqueue_struct *sa_workq;
+};
+
+/* CN10K IPSEC Security Association (SA) */
+/* SA direction */
+#define CN10K_IPSEC_SA_DIR_INB			0
+#define CN10K_IPSEC_SA_DIR_OUTB			1
+/* SA protocol */
+#define CN10K_IPSEC_SA_IPSEC_PROTO_AH		0
+#define CN10K_IPSEC_SA_IPSEC_PROTO_ESP		1
+/* SA Encryption Type */
+#define CN10K_IPSEC_SA_ENCAP_TYPE_AES_GCM	5
+/* SA IPSEC mode Transport/Tunnel */
+#define CN10K_IPSEC_SA_IPSEC_MODE_TRANSPORT	0
+#define CN10K_IPSEC_SA_IPSEC_MODE_TUNNEL	1
+/* SA AES Key Length */
+#define CN10K_IPSEC_SA_AES_KEY_LEN_128		1
+#define CN10K_IPSEC_SA_AES_KEY_LEN_192		2
+#define CN10K_IPSEC_SA_AES_KEY_LEN_256		3
+/* IV Source */
+#define CN10K_IPSEC_SA_IV_SRC_COUNTER		0
+#define CN10K_IPSEC_SA_IV_SRC_PACKET		3
+
+struct cn10k_tx_sa_s {
+	u64 esn_en		: 1; /* W0 */
+	u64 rsvd_w0_1_8		: 8;
+	u64 hw_ctx_off		: 7;
+	u64 ctx_id		: 16;
+	u64 rsvd_w0_32_47	: 16;
+	u64 ctx_push_size	: 7;
+	u64 rsvd_w0_55		: 1;
+	u64 ctx_hdr_size	: 2;
+	u64 aop_valid		: 1;
+	u64 rsvd_w0_59		: 1;
+	u64 ctx_size		: 4;
+	u64 w1;			/* W1 */
+	u64 sa_valid		: 1; /* W2 */
+	u64 sa_dir		: 1;
+	u64 rsvd_w2_2_3		: 2;
+	u64 ipsec_mode		: 1;
+	u64 ipsec_protocol	: 1;
+	u64 aes_key_len		: 2;
+	u64 enc_type		: 3;
+	u64 rsvd_w2_11_19	: 9;
+	u64 iv_src		: 2;
+	u64 rsvd_w2_22_31	: 10;
+	u64 rsvd_w2_32_63	: 32;
+	u64 w3;			/* W3 */
+	u8 cipher_key[32];	/* W4 - W7 */
+	u32 rsvd_w8_0_31;	/* W8 : IV */
+	u32 iv_gcm_salt;
+	u64 rsvd_w9_w30[22];	/* W9 - W30 */
+	u64 hw_ctx[6];		/* W31 - W36 */
+};
+
+/* CPT instruction parameter-1 */
+#define CN10K_IPSEC_INST_PARAM1_DIS_L4_CSUM		0x1
+#define CN10K_IPSEC_INST_PARAM1_DIS_L3_CSUM		0x2
+#define CN10K_IPSEC_INST_PARAM1_CRYPTO_MODE		0x20
+#define CN10K_IPSEC_INST_PARAM1_IV_OFFSET_SHIFT		8
+
+/* CPT instruction parameter-2 */
+#define CN10K_IPSEC_INST_PARAM2_ENC_DATA_OFFSET_SHIFT	0
+#define CN10K_IPSEC_INST_PARAM2_AUTH_DATA_OFFSET_SHIFT	8
+
+/* CPT Instruction Structure */
+struct cpt_inst_s {
+	u64 nixtxl		: 3; /* W0 */
+	u64 doneint		: 1;
+	u64 rsvd_w0_4_15	: 12;
+	u64 dat_offset		: 8;
+	u64 ext_param1		: 8;
+	u64 nixtx_offset	: 20;
+	u64 rsvd_w0_52_63	: 12;
+	u64 res_addr;		/* W1 */
+	u64 tag			: 32; /* W2 */
+	u64 tt			: 2;
+	u64 grp			: 10;
+	u64 rsvd_w2_44_47	: 4;
+	u64 rvu_pf_func		: 16;
+	u64 qord		: 1; /* W3 */
+	u64 rsvd_w3_1_2		: 2;
+	u64 wqe_ptr		: 61;
+	u64 dlen		: 16; /* W4 */
+	u64 param2		: 16;
+	u64 param1		: 16;
+	u64 opcode_major	: 8;
+	u64 opcode_minor	: 8;
+	u64 dptr;		/* W5 */
+	u64 rptr;		/* W6 */
+	u64 cptr		: 60; /* W7 */
+	u64 ctx_val		: 1;
+	u64 egrp		: 3;
+};
+
+/* CPT Instruction Result Structure */
+struct cpt_res_s {
+	u64 compcode		: 7; /* W0 */
+	u64 doneint		: 1;
+	u64 uc_compcode		: 8;
+	u64 uc_info		: 48;
+	u64 esn;		/* W1 */
+};
+
+/* CPT SG structure */
+struct cpt_sg_s {
+	u64 seg1_size	: 16;
+	u64 seg2_size	: 16;
+	u64 seg3_size	: 16;
+	u64 segs	: 2;
+	u64 rsvd_63_50	: 14;
+};
+
+/* CPT LF_INPROG Register */
+#define CPT_LF_INPROG_INFLIGHT	GENMASK_ULL(8, 0)
+#define CPT_LF_INPROG_GRB_CNT	GENMASK_ULL(39, 32)
+#define CPT_LF_INPROG_GWB_CNT	GENMASK_ULL(47, 40)
+
+/* CPT LF_Q_GRP_PTR Register */
+#define CPT_LF_Q_GRP_PTR_DQ_PTR	GENMASK_ULL(14, 0)
+#define CPT_LF_Q_GRP_PTR_NQ_PTR	GENMASK_ULL(46, 32)
+
+/* CPT LF_Q_SIZE Register */
+#define CPT_LF_Q_BASE_ADDR GENMASK_ULL(52, 7)
+
+/* CPT LF_Q_SIZE Register */
+#define CPT_LF_Q_SIZE_DIV40 GENMASK_ULL(14, 0)
+
+/* CPT LF CTX Flush Register */
+#define CPT_LF_CTX_FLUSH_CPTR GENMASK_ULL(45, 0)
+
+#ifdef CONFIG_XFRM_OFFLOAD
+int cn10k_ipsec_init(struct net_device *netdev);
+void cn10k_ipsec_clean(struct otx2_nic *pf);
+int cn10k_ipsec_ethtool_init(struct net_device *netdev, bool enable);
+bool otx2_sqe_add_sg_ipsec(struct otx2_nic *pfvf, struct otx2_snd_queue *sq,
+			   struct sk_buff *skb, int num_segs, int *offset);
+bool cn10k_ipsec_transmit(struct otx2_nic *pf, struct netdev_queue *txq,
+			  struct otx2_snd_queue *sq, struct sk_buff *skb,
+			  int num_segs, int size);
+#else
+static inline __maybe_unused int cn10k_ipsec_init(struct net_device *netdev)
+{
+	return 0;
+}
+
+static inline __maybe_unused void cn10k_ipsec_clean(struct otx2_nic *pf)
+{
+}
+
+static inline __maybe_unused
+int cn10k_ipsec_ethtool_init(struct net_device *netdev, bool enable)
+{
+	return 0;
+}
+
+static inline bool __maybe_unused
+otx2_sqe_add_sg_ipsec(struct otx2_nic *pfvf, struct otx2_snd_queue *sq,
+		      struct sk_buff *skb, int num_segs, int *offset)
+{
+	return true;
+}
+
+static inline bool __maybe_unused
+cn10k_ipsec_transmit(struct otx2_nic *pf, struct netdev_queue *txq,
+		     struct otx2_snd_queue *sq, struct sk_buff *skb,
+		     int num_segs, int size)
+{
+	return true;
+}
+#endif
+#endif // CN10K_IPSEC_H

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c

@@ -0,0 +1,718 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#include "otx2_common.h"
+#include "otx2_reg.h"
+#include "otx2_struct.h"
+#include "cn10k.h"
+
+/* CN20K mbox AF => PFx irq handler */
+irqreturn_t cn20k_pfaf_mbox_intr_handler(int irq, void *pf_irq)
+{
+	struct otx2_nic *pf = pf_irq;
+	struct mbox *mw = &pf->mbox;
+	struct otx2_mbox_dev *mdev;
+	struct otx2_mbox *mbox;
+	struct mbox_hdr *hdr;
+	u64 pf_trig_val;
+
+	pf_trig_val = otx2_read64(pf, RVU_PF_INT) & 0x3ULL;
+
+	/* Clear the IRQ */
+	otx2_write64(pf, RVU_PF_INT, pf_trig_val);
+
+	if (pf_trig_val & BIT_ULL(0)) {
+		mbox = &mw->mbox_up;
+		mdev = &mbox->dev[0];
+		otx2_sync_mbox_bbuf(mbox, 0);
+
+		hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+		if (hdr->num_msgs)
+			queue_work(pf->mbox_wq, &mw->mbox_up_wrk);
+
+		trace_otx2_msg_interrupt(pf->pdev, "UP message from AF to PF",
+					 BIT_ULL(0));
+	}
+
+	if (pf_trig_val & BIT_ULL(1)) {
+		mbox = &mw->mbox;
+		mdev = &mbox->dev[0];
+		otx2_sync_mbox_bbuf(mbox, 0);
+
+		hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+		if (hdr->num_msgs)
+			queue_work(pf->mbox_wq, &mw->mbox_wrk);
+		trace_otx2_msg_interrupt(pf->pdev, "DOWN reply from AF to PF",
+					 BIT_ULL(1));
+	}
+
+	return IRQ_HANDLED;
+}
+
+irqreturn_t cn20k_vfaf_mbox_intr_handler(int irq, void *vf_irq)
+{
+	struct otx2_nic *vf = vf_irq;
+	struct otx2_mbox_dev *mdev;
+	struct otx2_mbox *mbox;
+	struct mbox_hdr *hdr;
+	u64 vf_trig_val;
+
+	vf_trig_val = otx2_read64(vf, RVU_VF_INT) & 0x3ULL;
+	/* Clear the IRQ */
+	otx2_write64(vf, RVU_VF_INT, vf_trig_val);
+
+	/* Read latest mbox data */
+	smp_rmb();
+
+	if (vf_trig_val & BIT_ULL(1)) {
+		/* Check for PF => VF response messages */
+		mbox = &vf->mbox.mbox;
+		mdev = &mbox->dev[0];
+		otx2_sync_mbox_bbuf(mbox, 0);
+
+		hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+		if (hdr->num_msgs)
+			queue_work(vf->mbox_wq, &vf->mbox.mbox_wrk);
+
+		trace_otx2_msg_interrupt(mbox->pdev, "DOWN reply from PF0 to VF",
+					 BIT_ULL(1));
+	}
+
+	if (vf_trig_val & BIT_ULL(0)) {
+		/* Check for PF => VF notification messages */
+		mbox = &vf->mbox.mbox_up;
+		mdev = &mbox->dev[0];
+		otx2_sync_mbox_bbuf(mbox, 0);
+
+		hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+		if (hdr->num_msgs)
+			queue_work(vf->mbox_wq, &vf->mbox.mbox_up_wrk);
+
+		trace_otx2_msg_interrupt(mbox->pdev, "UP message from PF0 to VF",
+					 BIT_ULL(0));
+	}
+
+	return IRQ_HANDLED;
+}
+
+void cn20k_enable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs)
+{
+	/* Clear PF <=> VF mailbox IRQ */
+	otx2_write64(pf, RVU_MBOX_PF_VFPF_INTX(0), ~0ull);
+	otx2_write64(pf, RVU_MBOX_PF_VFPF_INTX(1), ~0ull);
+	otx2_write64(pf, RVU_MBOX_PF_VFPF1_INTX(0), ~0ull);
+	otx2_write64(pf, RVU_MBOX_PF_VFPF1_INTX(1), ~0ull);
+
+	/* Enable PF <=> VF mailbox IRQ */
+	otx2_write64(pf, RVU_MBOX_PF_VFPF_INT_ENA_W1SX(0), INTR_MASK(numvfs));
+	otx2_write64(pf, RVU_MBOX_PF_VFPF1_INT_ENA_W1SX(0), INTR_MASK(numvfs));
+	if (numvfs > 64) {
+		numvfs -= 64;
+		otx2_write64(pf, RVU_MBOX_PF_VFPF_INT_ENA_W1SX(1),
+			     INTR_MASK(numvfs));
+		otx2_write64(pf, RVU_MBOX_PF_VFPF1_INT_ENA_W1SX(1),
+			     INTR_MASK(numvfs));
+	}
+}
+
+void cn20k_disable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs)
+{
+	int vector, intr_vec, vec = 0;
+
+	/* Disable PF <=> VF mailbox IRQ */
+	otx2_write64(pf, RVU_MBOX_PF_VFPF_INT_ENA_W1CX(0), ~0ull);
+	otx2_write64(pf, RVU_MBOX_PF_VFPF_INT_ENA_W1CX(1), ~0ull);
+	otx2_write64(pf, RVU_MBOX_PF_VFPF1_INT_ENA_W1CX(0), ~0ull);
+	otx2_write64(pf, RVU_MBOX_PF_VFPF1_INT_ENA_W1CX(1), ~0ull);
+
+	otx2_write64(pf, RVU_MBOX_PF_VFPF_INTX(0), ~0ull);
+	otx2_write64(pf, RVU_MBOX_PF_VFPF1_INTX(0), ~0ull);
+
+	if (numvfs > 64) {
+		otx2_write64(pf, RVU_MBOX_PF_VFPF_INTX(1), ~0ull);
+		otx2_write64(pf, RVU_MBOX_PF_VFPF1_INTX(1), ~0ull);
+	}
+
+	for (intr_vec = RVU_MBOX_PF_INT_VEC_VFPF_MBOX0; intr_vec <=
+			RVU_MBOX_PF_INT_VEC_VFPF1_MBOX1; intr_vec++, vec++) {
+		vector = pci_irq_vector(pf->pdev, intr_vec);
+		free_irq(vector, pf->hw.pfvf_irq_devid[vec]);
+	}
+}
+
+irqreturn_t cn20k_pfvf_mbox_intr_handler(int irq, void *pf_irq)
+{
+	struct pf_irq_data *irq_data = pf_irq;
+	struct otx2_nic *pf = irq_data->pf;
+	struct mbox *mbox;
+	u64 intr;
+
+	/* Sync with mbox memory region */
+	rmb();
+
+	/* Clear interrupts */
+	intr = otx2_read64(pf, irq_data->intr_status);
+	otx2_write64(pf, irq_data->intr_status, intr);
+	mbox = pf->mbox_pfvf;
+
+	if (intr)
+		trace_otx2_msg_interrupt(pf->pdev, "VF(s) to PF", intr);
+
+	irq_data->pf_queue_work_hdlr(mbox, pf->mbox_pfvf_wq, irq_data->start,
+				     irq_data->mdevs, intr);
+
+	return IRQ_HANDLED;
+}
+
+int cn20k_register_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs)
+{
+	struct otx2_hw *hw = &pf->hw;
+	struct pf_irq_data *irq_data;
+	int intr_vec, ret, vec = 0;
+	char *irq_name;
+
+	/* irq data for 4 PF intr vectors */
+	irq_data = devm_kcalloc(pf->dev, 4,
+				sizeof(struct pf_irq_data), GFP_KERNEL);
+	if (!irq_data)
+		return -ENOMEM;
+
+	for (intr_vec = RVU_MBOX_PF_INT_VEC_VFPF_MBOX0; intr_vec <=
+			RVU_MBOX_PF_INT_VEC_VFPF1_MBOX1; intr_vec++, vec++) {
+		switch (intr_vec) {
+		case RVU_MBOX_PF_INT_VEC_VFPF_MBOX0:
+			irq_data[vec].intr_status =
+						RVU_MBOX_PF_VFPF_INTX(0);
+			irq_data[vec].start = 0;
+			irq_data[vec].mdevs = 64;
+			break;
+		case RVU_MBOX_PF_INT_VEC_VFPF_MBOX1:
+			irq_data[vec].intr_status =
+						RVU_MBOX_PF_VFPF_INTX(1);
+			irq_data[vec].start = 64;
+			irq_data[vec].mdevs = 96;
+			break;
+		case RVU_MBOX_PF_INT_VEC_VFPF1_MBOX0:
+			irq_data[vec].intr_status =
+						RVU_MBOX_PF_VFPF1_INTX(0);
+			irq_data[vec].start = 0;
+			irq_data[vec].mdevs = 64;
+			break;
+		case RVU_MBOX_PF_INT_VEC_VFPF1_MBOX1:
+			irq_data[vec].intr_status =
+						RVU_MBOX_PF_VFPF1_INTX(1);
+			irq_data[vec].start = 64;
+			irq_data[vec].mdevs = 96;
+			break;
+		}
+		irq_data[vec].pf_queue_work_hdlr = otx2_queue_vf_work;
+		irq_data[vec].vec_num = intr_vec;
+		irq_data[vec].pf = pf;
+
+		/* Register mailbox interrupt handler */
+		irq_name = &hw->irq_name[intr_vec * NAME_SIZE];
+		if (pf->pcifunc)
+			snprintf(irq_name, NAME_SIZE,
+				 "RVUPF%d_VF%d Mbox%d", rvu_get_pf(pf->pdev,
+				 pf->pcifunc), vec / 2, vec % 2);
+		else
+			snprintf(irq_name, NAME_SIZE, "RVUPF_VF%d Mbox%d",
+				 vec / 2, vec % 2);
+
+		hw->pfvf_irq_devid[vec] = &irq_data[vec];
+		ret = request_irq(pci_irq_vector(pf->pdev, intr_vec),
+				  pf->hw_ops->pfvf_mbox_intr_handler, 0,
+				  irq_name,
+				  &irq_data[vec]);
+		if (ret) {
+			dev_err(pf->dev,
+				"RVUPF: IRQ registration failed for PFVF mbox0 irq\n");
+			return ret;
+		}
+	}
+
+	cn20k_enable_pfvf_mbox_intr(pf, numvfs);
+
+	return 0;
+}
+
+#define RQ_BP_LVL_AURA   (255 - ((85 * 256) / 100)) /* BP when 85% is full */
+
+static u8 cn20k_aura_bpid_idx(struct otx2_nic *pfvf, int aura_id)
+{
+#ifdef CONFIG_DCB
+	return pfvf->queue_to_pfc_map[aura_id];
+#else
+	return 0;
+#endif
+}
+
+static int cn20k_tc_get_entry_index(struct otx2_flow_config *flow_cfg,
+				    struct otx2_tc_flow *node)
+{
+	struct otx2_tc_flow *tmp;
+	int index = 0;
+
+	list_for_each_entry(tmp, &flow_cfg->flow_list_tc, list) {
+		if (tmp == node)
+			return index;
+
+		index++;
+	}
+
+	return -1;
+}
+
+int cn20k_tc_free_mcam_entry(struct otx2_nic *nic, u16 entry)
+{
+	struct npc_mcam_free_entry_req *req;
+	int err;
+
+	mutex_lock(&nic->mbox.lock);
+	req = otx2_mbox_alloc_msg_npc_mcam_free_entry(&nic->mbox);
+	if (!req) {
+		mutex_unlock(&nic->mbox.lock);
+		return -ENOMEM;
+	}
+
+	req->entry = entry;
+	/* Send message to AF to free MCAM entries */
+	err = otx2_sync_mbox_msg(&nic->mbox);
+	if (err) {
+		mutex_unlock(&nic->mbox.lock);
+		return err;
+	}
+
+	mutex_unlock(&nic->mbox.lock);
+
+	return 0;
+}
+
+static bool cn20k_tc_check_entry_shiftable(struct otx2_nic *nic,
+					   struct otx2_flow_config *flow_cfg,
+					   struct otx2_tc_flow *node, int index,
+					   bool error)
+{
+	struct otx2_tc_flow *first, *tmp, *n;
+	u32 prio = 0;
+	int i = 0;
+	u8 type;
+
+	first = list_first_entry(&flow_cfg->flow_list_tc, struct otx2_tc_flow,
+				 list);
+	type = first->kw_type;
+
+	/* Check all the nodes from start to given index (including index) has
+	 * same type i.e, either X2 or X4
+	 */
+	list_for_each_entry_safe(tmp, n, &flow_cfg->flow_list_tc, list) {
+		if (i > index)
+			break;
+
+		if (type != tmp->kw_type) {
+			/* List has both X2 and X4 entries so entries cannot be
+			 * shifted to save MCAM space.
+			 */
+			if (error)
+				dev_err(nic->dev, "Rule %d cannot be shifted to %d\n",
+					tmp->prio, prio);
+			return false;
+		}
+
+		type = tmp->kw_type;
+		prio = tmp->prio;
+		i++;
+	}
+
+	return true;
+}
+
+void cn20k_tc_update_mcam_table_del_req(struct otx2_nic *nic,
+					struct otx2_flow_config *flow_cfg,
+					struct otx2_tc_flow *node)
+{
+	struct otx2_tc_flow *first, *tmp, *n;
+	int i = 0, index;
+	u16 cntr_val = 0;
+	u16 entry;
+
+	index = cn20k_tc_get_entry_index(flow_cfg, node);
+	if (index < 0) {
+		netdev_dbg(nic->netdev, "Could not find node\n");
+		return;
+	}
+
+	first = list_first_entry(&flow_cfg->flow_list_tc, struct otx2_tc_flow,
+				 list);
+	entry = first->entry;
+
+	/* If entries cannot be shifted then delete given entry
+	 * and free it to AF too.
+	 */
+	if (!cn20k_tc_check_entry_shiftable(nic, flow_cfg, node,
+					    index, false)) {
+		list_del(&node->list);
+		entry = node->entry;
+		goto free_mcam_entry;
+	}
+
+	/* Find and delete the entry from the list and re-install
+	 * all the entries from beginning to the index of the
+	 * deleted entry to higher mcam indexes.
+	 */
+	list_for_each_entry_safe(tmp, n, &flow_cfg->flow_list_tc, list) {
+		if (node == tmp) {
+			list_del(&tmp->list);
+			break;
+		}
+
+		otx2_del_mcam_flow_entry(nic, tmp->entry, &cntr_val);
+		tmp->entry = (list_next_entry(tmp, list))->entry;
+		tmp->req.entry = tmp->entry;
+		tmp->req.cntr_val = cntr_val;
+	}
+
+	list_for_each_entry_safe(tmp, n, &flow_cfg->flow_list_tc, list) {
+		if (i == index)
+			break;
+
+		otx2_add_mcam_flow_entry(nic, &tmp->req);
+		i++;
+	}
+
+free_mcam_entry:
+	if (cn20k_tc_free_mcam_entry(nic, entry))
+		netdev_err(nic->netdev, "Freeing entry %d to AF failed\n",
+			   entry);
+}
+
+int cn20k_tc_update_mcam_table_add_req(struct otx2_nic *nic,
+				       struct otx2_flow_config *flow_cfg,
+				       struct otx2_tc_flow *node)
+{
+	struct otx2_tc_flow *tmp;
+	u16 cntr_val = 0;
+	int list_idx, i;
+	int entry, prev;
+
+	/* Find the index of the entry(list_idx) whose priority
+	 * is greater than the new entry and re-install all
+	 * the entries from beginning to list_idx to higher
+	 * mcam indexes.
+	 */
+	list_idx = otx2_tc_add_to_flow_list(flow_cfg, node);
+	entry = node->entry;
+	if (!cn20k_tc_check_entry_shiftable(nic, flow_cfg, node,
+					    list_idx, true))
+		/* Due to mix of X2 and X4, entries cannot be shifted.
+		 * In this case free the entry allocated for this rule.
+		 */
+		return -EINVAL;
+
+	for (i = 0; i < list_idx; i++) {
+		tmp = otx2_tc_get_entry_by_index(flow_cfg, i);
+		if (!tmp)
+			return -ENOMEM;
+
+		otx2_del_mcam_flow_entry(nic, tmp->entry, &cntr_val);
+		prev = tmp->entry;
+		tmp->entry = entry;
+		tmp->req.entry = tmp->entry;
+		tmp->req.cntr_val = cntr_val;
+		otx2_add_mcam_flow_entry(nic, &tmp->req);
+		entry = prev;
+	}
+
+	return entry;
+}
+
+#define MAX_TC_HW_PRIORITY		125
+#define MAX_TC_VF_PRIORITY		126
+#define MAX_TC_PF_PRIORITY		127
+
+static int __cn20k_tc_alloc_entry(struct otx2_nic *nic,
+				  struct npc_install_flow_req *flow_req,
+				  u16 *entry, u8 *type,
+				  u32 tc_priority, bool hw_priority)
+{
+	struct otx2_flow_config *flow_cfg = nic->flow_cfg;
+	struct npc_install_flow_req *req;
+	struct npc_install_flow_rsp *rsp;
+	struct otx2_tc_flow *tmp;
+	int ret = 0;
+
+	req = otx2_mbox_alloc_msg_npc_install_flow(&nic->mbox);
+	if (!req)
+		return -ENOMEM;
+
+	memcpy(&flow_req->hdr, &req->hdr, sizeof(struct mbox_msghdr));
+	memcpy(req, flow_req, sizeof(struct npc_install_flow_req));
+	req->alloc_entry = 1;
+
+	/* Allocate very least priority for first rule */
+	if (hw_priority || list_empty(&flow_cfg->flow_list_tc)) {
+		req->ref_prio = NPC_MCAM_LEAST_PRIO;
+	} else {
+		req->ref_prio = NPC_MCAM_HIGHER_PRIO;
+		tmp = list_first_entry(&flow_cfg->flow_list_tc,
+				       struct otx2_tc_flow, list);
+		req->ref_entry = tmp->entry;
+	}
+
+	ret = otx2_sync_mbox_msg(&nic->mbox);
+	if (ret)
+		return ret;
+
+	rsp = (struct npc_install_flow_rsp *)otx2_mbox_get_rsp(&nic->mbox.mbox,
+							       0, &req->hdr);
+	if (IS_ERR(rsp))
+		return -EFAULT;
+
+	if (entry)
+		*entry = rsp->entry;
+	if (type)
+		*type = rsp->kw_type;
+
+	return ret;
+}
+
+int cn20k_tc_alloc_entry(struct otx2_nic *nic,
+			 struct flow_cls_offload *tc_flow_cmd,
+			 struct otx2_tc_flow *new_node,
+			 struct npc_install_flow_req *flow_req)
+{
+	bool hw_priority = false;
+	u16 entry_from_af;
+	u8 entry_type;
+	int ret;
+
+	if (is_otx2_vf(nic->pcifunc))
+		flow_req->hw_prio = MAX_TC_VF_PRIORITY;
+	else
+		flow_req->hw_prio = MAX_TC_PF_PRIORITY;
+
+	if (new_node->prio <= MAX_TC_HW_PRIORITY) {
+		flow_req->hw_prio = new_node->prio;
+		hw_priority = true;
+	}
+
+	mutex_lock(&nic->mbox.lock);
+
+	ret = __cn20k_tc_alloc_entry(nic, flow_req, &entry_from_af, &entry_type,
+				     new_node->prio, hw_priority);
+	if (ret) {
+		mutex_unlock(&nic->mbox.lock);
+		return ret;
+	}
+
+	new_node->kw_type = entry_type;
+	new_node->entry = entry_from_af;
+
+	mutex_unlock(&nic->mbox.lock);
+
+	return 0;
+}
+
+static int cn20k_aura_aq_init(struct otx2_nic *pfvf, int aura_id,
+			      int pool_id, int numptrs)
+{
+	struct npa_cn20k_aq_enq_req *aq;
+	struct otx2_pool *pool;
+	u8 bpid_idx;
+	int err;
+
+	pool = &pfvf->qset.pool[pool_id];
+
+	/* Allocate memory for HW to update Aura count.
+	 * Alloc one cache line, so that it fits all FC_STYPE modes.
+	 */
+	if (!pool->fc_addr) {
+		err = qmem_alloc(pfvf->dev, &pool->fc_addr, 1, OTX2_ALIGN);
+		if (err)
+			return err;
+	}
+
+	/* Initialize this aura's context via AF */
+	aq = otx2_mbox_alloc_msg_npa_cn20k_aq_enq(&pfvf->mbox);
+	if (!aq) {
+		/* Shared mbox memory buffer is full, flush it and retry */
+		err = otx2_sync_mbox_msg(&pfvf->mbox);
+		if (err)
+			return err;
+		aq = otx2_mbox_alloc_msg_npa_cn20k_aq_enq(&pfvf->mbox);
+		if (!aq)
+			return -ENOMEM;
+	}
+
+	aq->aura_id = aura_id;
+
+	/* Will be filled by AF with correct pool context address */
+	aq->aura.pool_addr = pool_id;
+	aq->aura.pool_caching = 1;
+	aq->aura.shift = ilog2(numptrs) - 8;
+	aq->aura.count = numptrs;
+	aq->aura.limit = numptrs;
+	aq->aura.avg_level = 255;
+	aq->aura.ena = 1;
+	aq->aura.fc_ena = 1;
+	aq->aura.fc_addr = pool->fc_addr->iova;
+	aq->aura.fc_hyst_bits = 0; /* Store count on all updates */
+
+	/* Enable backpressure for RQ aura */
+	if (aura_id < pfvf->hw.rqpool_cnt && !is_otx2_lbkvf(pfvf->pdev)) {
+		aq->aura.bp_ena = 0;
+		/* If NIX1 LF is attached then specify NIX1_RX.
+		 *
+		 * Below NPA_AURA_S[BP_ENA] is set according to the
+		 * NPA_BPINTF_E enumeration given as:
+		 * 0x0 + a*0x1 where 'a' is 0 for NIX0_RX and 1 for NIX1_RX so
+		 * NIX0_RX is 0x0 + 0*0x1 = 0
+		 * NIX1_RX is 0x0 + 1*0x1 = 1
+		 * But in HRM it is given that
+		 * "NPA_AURA_S[BP_ENA](w1[33:32]) - Enable aura backpressure to
+		 * NIX-RX based on [BP] level. One bit per NIX-RX; index
+		 * enumerated by NPA_BPINTF_E."
+		 */
+		if (pfvf->nix_blkaddr == BLKADDR_NIX1)
+			aq->aura.bp_ena = 1;
+
+		bpid_idx = cn20k_aura_bpid_idx(pfvf, aura_id);
+		aq->aura.bpid = pfvf->bpid[bpid_idx];
+
+		/* Set backpressure level for RQ's Aura */
+		aq->aura.bp = RQ_BP_LVL_AURA;
+	}
+
+	/* Fill AQ info */
+	aq->ctype = NPA_AQ_CTYPE_AURA;
+	aq->op = NPA_AQ_INSTOP_INIT;
+
+	return 0;
+}
+
+static int cn20k_pool_aq_init(struct otx2_nic *pfvf, u16 pool_id,
+			      int stack_pages, int numptrs, int buf_size,
+			      int type)
+{
+	struct page_pool_params pp_params = { 0 };
+	struct npa_cn20k_aq_enq_req *aq;
+	struct otx2_pool *pool;
+	int err, sz;
+
+	pool = &pfvf->qset.pool[pool_id];
+	/* Alloc memory for stack which is used to store buffer pointers */
+	err = qmem_alloc(pfvf->dev, &pool->stack,
+			 stack_pages, pfvf->hw.stack_pg_bytes);
+	if (err)
+		return err;
+
+	pool->rbsize = buf_size;
+
+	/* Initialize this pool's context via AF */
+	aq = otx2_mbox_alloc_msg_npa_cn20k_aq_enq(&pfvf->mbox);
+	if (!aq) {
+		/* Shared mbox memory buffer is full, flush it and retry */
+		err = otx2_sync_mbox_msg(&pfvf->mbox);
+		if (err) {
+			qmem_free(pfvf->dev, pool->stack);
+			pool->stack = NULL;
+			return err;
+		}
+		aq = otx2_mbox_alloc_msg_npa_cn20k_aq_enq(&pfvf->mbox);
+		if (!aq) {
+			qmem_free(pfvf->dev, pool->stack);
+			pool->stack = NULL;
+			return -ENOMEM;
+		}
+	}
+
+	aq->aura_id = pool_id;
+	aq->pool.stack_base = pool->stack->iova;
+	aq->pool.stack_caching = 1;
+	aq->pool.ena = 1;
+	aq->pool.buf_size = buf_size / 128;
+	aq->pool.stack_max_pages = stack_pages;
+	aq->pool.shift = ilog2(numptrs) - 8;
+	aq->pool.ptr_start = 0;
+	aq->pool.ptr_end = ~0ULL;
+
+	/* Fill AQ info */
+	aq->ctype = NPA_AQ_CTYPE_POOL;
+	aq->op = NPA_AQ_INSTOP_INIT;
+
+	if (type != AURA_NIX_RQ) {
+		pool->page_pool = NULL;
+		return 0;
+	}
+
+	sz = ALIGN(ALIGN(SKB_DATA_ALIGN(buf_size), OTX2_ALIGN), PAGE_SIZE);
+	pp_params.order = get_order(sz);
+	pp_params.flags = PP_FLAG_DMA_MAP;
+	pp_params.pool_size = min(OTX2_PAGE_POOL_SZ, numptrs);
+	pp_params.nid = NUMA_NO_NODE;
+	pp_params.dev = pfvf->dev;
+	pp_params.dma_dir = DMA_FROM_DEVICE;
+	pool->page_pool = page_pool_create(&pp_params);
+	if (IS_ERR(pool->page_pool)) {
+		netdev_err(pfvf->netdev, "Creation of page pool failed\n");
+		return PTR_ERR(pool->page_pool);
+	}
+
+	return 0;
+}
+
+static int cn20k_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura)
+{
+	struct nix_cn20k_aq_enq_req *aq;
+	struct otx2_nic *pfvf = dev;
+
+	/* Get memory to put this msg */
+	aq = otx2_mbox_alloc_msg_nix_cn20k_aq_enq(&pfvf->mbox);
+	if (!aq)
+		return -ENOMEM;
+
+	aq->sq.cq = pfvf->hw.rx_queues + qidx;
+	aq->sq.max_sqe_size = NIX_MAXSQESZ_W16; /* 128 byte */
+	aq->sq.cq_ena = 1;
+	aq->sq.ena = 1;
+	aq->sq.smq = otx2_get_smq_idx(pfvf, qidx);
+	aq->sq.smq_rr_weight = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen);
+	aq->sq.default_chan = pfvf->hw.tx_chan_base + chan_offset;
+	aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */
+	aq->sq.sqb_aura = sqb_aura;
+	aq->sq.sq_int_ena = NIX_SQINT_BITS;
+	aq->sq.qint_idx = 0;
+	/* Due pipelining impact minimum 2000 unused SQ CQE's
+	 * need to maintain to avoid CQ overflow.
+	 */
+	aq->sq.cq_limit = (SEND_CQ_SKID * 256) / (pfvf->qset.sqe_cnt);
+
+	/* Fill AQ info */
+	aq->qidx = qidx;
+	aq->ctype = NIX_AQ_CTYPE_SQ;
+	aq->op = NIX_AQ_INSTOP_INIT;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+}
+
+static struct dev_hw_ops cn20k_hw_ops = {
+	.pfaf_mbox_intr_handler = cn20k_pfaf_mbox_intr_handler,
+	.vfaf_mbox_intr_handler = cn20k_vfaf_mbox_intr_handler,
+	.pfvf_mbox_intr_handler = cn20k_pfvf_mbox_intr_handler,
+	.sq_aq_init = cn20k_sq_aq_init,
+	.sqe_flush = cn10k_sqe_flush,
+	.aura_freeptr = cn10k_aura_freeptr,
+	.refill_pool_ptrs = cn10k_refill_pool_ptrs,
+	.aura_aq_init = cn20k_aura_aq_init,
+	.pool_aq_init = cn20k_pool_aq_init,
+};
+
+void cn20k_init(struct otx2_nic *pfvf)
+{
+	pfvf->hw_ops = &cn20k_hw_ops;
+}
+EXPORT_SYMBOL(cn20k_init);

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/cn20k.h

@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#ifndef CN20K_H
+#define CN20K_H
+
+#include "otx2_common.h"
+
+struct otx2_flow_config;
+struct otx2_tc_flow;
+
+void cn20k_init(struct otx2_nic *pfvf);
+int cn20k_register_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs);
+void cn20k_disable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs);
+void cn20k_enable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs);
+void cn20k_tc_update_mcam_table_del_req(struct otx2_nic *nic,
+					struct otx2_flow_config *flow_cfg,
+					struct otx2_tc_flow *node);
+int cn20k_tc_update_mcam_table_add_req(struct otx2_nic *nic,
+				       struct otx2_flow_config *flow_cfg,
+				       struct otx2_tc_flow *node);
+int cn20k_tc_alloc_entry(struct otx2_nic *nic,
+			 struct flow_cls_offload *tc_flow_cmd,
+			 struct otx2_tc_flow *new_node,
+			 struct npc_install_flow_req *dummy);
+int cn20k_tc_free_mcam_entry(struct otx2_nic *nic, u16 entry);
+#endif /* CN20K_H */

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dcbnl.c

@@ -0,0 +1,489 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2021 Marvell.
+ *
+ */
+
+#include "otx2_common.h"
+
+static int otx2_check_pfc_config(struct otx2_nic *pfvf)
+{
+	u8 tx_queues = pfvf->hw.tx_queues, prio;
+	u8 pfc_en = pfvf->pfc_en;
+
+	for (prio = 0; prio < NIX_PF_PFC_PRIO_MAX; prio++) {
+		if ((pfc_en & (1 << prio)) &&
+		    prio > tx_queues - 1) {
+			dev_warn(pfvf->dev,
+				 "Increase number of tx queues from %d to %d to support PFC.\n",
+				 tx_queues, prio + 1);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+int otx2_pfc_txschq_config(struct otx2_nic *pfvf)
+{
+	u8 pfc_en, pfc_bit_set;
+	int prio, lvl, err;
+
+	pfc_en = pfvf->pfc_en;
+	for (prio = 0; prio < NIX_PF_PFC_PRIO_MAX; prio++) {
+		pfc_bit_set = pfc_en & (1 << prio);
+
+		/* Either PFC bit is not set
+		 * or tx scheduler is not allocated for the priority
+		 */
+		if (!pfc_bit_set || !pfvf->pfc_alloc_status[prio])
+			continue;
+
+		/* configure the scheduler for the tls*/
+		for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+			err = otx2_txschq_config(pfvf, lvl, prio, true);
+			if (err) {
+				dev_err(pfvf->dev,
+					"%s configure PFC tx schq for lvl:%d, prio:%d failed!\n",
+					__func__, lvl, prio);
+				return err;
+			}
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(otx2_pfc_txschq_config);
+
+static int otx2_pfc_txschq_alloc_one(struct otx2_nic *pfvf, u8 prio)
+{
+	struct nix_txsch_alloc_req *req;
+	struct nix_txsch_alloc_rsp *rsp;
+	int lvl, rc;
+
+	/* Get memory to put this msg */
+	req = otx2_mbox_alloc_msg_nix_txsch_alloc(&pfvf->mbox);
+	if (!req)
+		return -ENOMEM;
+
+	/* Request one schq per level upto max level as configured
+	 * link config level. These rest of the scheduler can be
+	 * same as hw.txschq_list.
+	 */
+	for (lvl = 0; lvl <= pfvf->hw.txschq_link_cfg_lvl; lvl++)
+		req->schq[lvl] = 1;
+
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+	if (rc)
+		return rc;
+
+	rsp = (struct nix_txsch_alloc_rsp *)
+	      otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
+	if (IS_ERR(rsp))
+		return PTR_ERR(rsp);
+
+	/* Setup transmit scheduler list */
+	for (lvl = 0; lvl <= pfvf->hw.txschq_link_cfg_lvl; lvl++) {
+		if (!rsp->schq[lvl])
+			return -ENOSPC;
+
+		pfvf->pfc_schq_list[lvl][prio] = rsp->schq_list[lvl][0];
+	}
+
+	/* Set the Tx schedulers for rest of the levels same as
+	 * hw.txschq_list as those will be common for all.
+	 */
+	for (; lvl < NIX_TXSCH_LVL_CNT; lvl++)
+		pfvf->pfc_schq_list[lvl][prio] = pfvf->hw.txschq_list[lvl][0];
+
+	pfvf->pfc_alloc_status[prio] = true;
+	return 0;
+}
+
+int otx2_pfc_txschq_alloc(struct otx2_nic *pfvf)
+{
+	u8 pfc_en = pfvf->pfc_en;
+	u8 pfc_bit_set;
+	int err, prio;
+
+	for (prio = 0; prio < NIX_PF_PFC_PRIO_MAX; prio++) {
+		pfc_bit_set = pfc_en & (1 << prio);
+
+		if (!pfc_bit_set || pfvf->pfc_alloc_status[prio])
+			continue;
+
+		/* Add new scheduler to the priority */
+		err = otx2_pfc_txschq_alloc_one(pfvf, prio);
+		if (err) {
+			dev_err(pfvf->dev, "%s failed to allocate PFC TX schedulers\n", __func__);
+			return err;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(otx2_pfc_txschq_alloc);
+
+static int otx2_pfc_txschq_stop_one(struct otx2_nic *pfvf, u8 prio)
+{
+	int lvl;
+
+	/* free PFC TLx nodes */
+	for (lvl = 0; lvl <= pfvf->hw.txschq_link_cfg_lvl; lvl++)
+		otx2_txschq_free_one(pfvf, lvl,
+				     pfvf->pfc_schq_list[lvl][prio]);
+
+	pfvf->pfc_alloc_status[prio] = false;
+	return 0;
+}
+
+static int otx2_pfc_update_sq_smq_mapping(struct otx2_nic *pfvf, int prio)
+{
+	struct nix_cn10k_aq_enq_req *cn10k_sq_aq;
+	struct net_device *dev = pfvf->netdev;
+	bool if_up = netif_running(dev);
+	struct nix_aq_enq_req *sq_aq;
+
+	if (if_up) {
+		if (pfvf->pfc_alloc_status[prio])
+			netif_tx_stop_all_queues(pfvf->netdev);
+		else
+			netif_tx_stop_queue(netdev_get_tx_queue(dev, prio));
+	}
+
+	if (test_bit(CN10K_LMTST, &pfvf->hw.cap_flag)) {
+		cn10k_sq_aq = otx2_mbox_alloc_msg_nix_cn10k_aq_enq(&pfvf->mbox);
+		if (!cn10k_sq_aq)
+			return -ENOMEM;
+
+		/* Fill AQ info */
+		cn10k_sq_aq->qidx = prio;
+		cn10k_sq_aq->ctype = NIX_AQ_CTYPE_SQ;
+		cn10k_sq_aq->op = NIX_AQ_INSTOP_WRITE;
+
+		/* Fill fields to update */
+		cn10k_sq_aq->sq.ena = 1;
+		cn10k_sq_aq->sq_mask.ena = 1;
+		cn10k_sq_aq->sq_mask.smq = GENMASK(9, 0);
+		cn10k_sq_aq->sq.smq = otx2_get_smq_idx(pfvf, prio);
+	} else {
+		sq_aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox);
+		if (!sq_aq)
+			return -ENOMEM;
+
+		/* Fill AQ info */
+		sq_aq->qidx = prio;
+		sq_aq->ctype = NIX_AQ_CTYPE_SQ;
+		sq_aq->op = NIX_AQ_INSTOP_WRITE;
+
+		/* Fill fields to update */
+		sq_aq->sq.ena = 1;
+		sq_aq->sq_mask.ena = 1;
+		sq_aq->sq_mask.smq = GENMASK(8, 0);
+		sq_aq->sq.smq = otx2_get_smq_idx(pfvf, prio);
+	}
+
+	otx2_sync_mbox_msg(&pfvf->mbox);
+
+	if (if_up) {
+		if (pfvf->pfc_alloc_status[prio])
+			netif_tx_start_all_queues(pfvf->netdev);
+		else
+			netif_tx_start_queue(netdev_get_tx_queue(dev, prio));
+	}
+
+	return 0;
+}
+
+int otx2_pfc_txschq_update(struct otx2_nic *pfvf)
+{
+	bool if_up = netif_running(pfvf->netdev);
+	u8 pfc_en = pfvf->pfc_en, pfc_bit_set;
+	struct mbox *mbox = &pfvf->mbox;
+	int err, prio;
+
+	mutex_lock(&mbox->lock);
+	for (prio = 0; prio < NIX_PF_PFC_PRIO_MAX; prio++) {
+		pfc_bit_set = pfc_en & (1 << prio);
+
+		/* tx scheduler was created but user wants to disable now */
+		if (!pfc_bit_set && pfvf->pfc_alloc_status[prio]) {
+			mutex_unlock(&mbox->lock);
+			if (if_up)
+				netif_tx_stop_all_queues(pfvf->netdev);
+
+			otx2_smq_flush(pfvf, pfvf->pfc_schq_list[NIX_TXSCH_LVL_SMQ][prio]);
+			if (if_up)
+				netif_tx_start_all_queues(pfvf->netdev);
+
+			/* delete the schq */
+			err = otx2_pfc_txschq_stop_one(pfvf, prio);
+			if (err) {
+				dev_err(pfvf->dev,
+					"%s failed to stop PFC tx schedulers for priority: %d\n",
+					__func__, prio);
+				return err;
+			}
+
+			mutex_lock(&mbox->lock);
+			goto update_sq_smq_map;
+		}
+
+		/* Either PFC bit is not set
+		 * or Tx scheduler is already mapped for the priority
+		 */
+		if (!pfc_bit_set || pfvf->pfc_alloc_status[prio])
+			continue;
+
+		/* Add new scheduler to the priority */
+		err = otx2_pfc_txschq_alloc_one(pfvf, prio);
+		if (err) {
+			mutex_unlock(&mbox->lock);
+			dev_err(pfvf->dev,
+				"%s failed to allocate PFC tx schedulers for priority: %d\n",
+				__func__, prio);
+			return err;
+		}
+
+update_sq_smq_map:
+		err = otx2_pfc_update_sq_smq_mapping(pfvf, prio);
+		if (err) {
+			mutex_unlock(&mbox->lock);
+			dev_err(pfvf->dev, "%s failed PFC Tx schq sq:%d mapping", __func__, prio);
+			return err;
+		}
+	}
+
+	err = otx2_pfc_txschq_config(pfvf);
+	mutex_unlock(&mbox->lock);
+	if (err)
+		return err;
+
+	return 0;
+}
+EXPORT_SYMBOL(otx2_pfc_txschq_update);
+
+int otx2_pfc_txschq_stop(struct otx2_nic *pfvf)
+{
+	u8 pfc_en, pfc_bit_set;
+	int prio, err;
+
+	pfc_en = pfvf->pfc_en;
+	for (prio = 0; prio < NIX_PF_PFC_PRIO_MAX; prio++) {
+		pfc_bit_set = pfc_en & (1 << prio);
+		if (!pfc_bit_set || !pfvf->pfc_alloc_status[prio])
+			continue;
+
+		/* Delete the existing scheduler */
+		err = otx2_pfc_txschq_stop_one(pfvf, prio);
+		if (err) {
+			dev_err(pfvf->dev, "%s failed to stop PFC TX schedulers\n", __func__);
+			return err;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(otx2_pfc_txschq_stop);
+
+int otx2_config_priority_flow_ctrl(struct otx2_nic *pfvf)
+{
+	struct cgx_pfc_cfg *req;
+	struct cgx_pfc_rsp *rsp;
+	int err = 0;
+
+	if (is_otx2_lbkvf(pfvf->pdev))
+		return 0;
+
+	mutex_lock(&pfvf->mbox.lock);
+	req = otx2_mbox_alloc_msg_cgx_prio_flow_ctrl_cfg(&pfvf->mbox);
+	if (!req) {
+		err = -ENOMEM;
+		goto unlock;
+	}
+
+	if (pfvf->pfc_en) {
+		req->rx_pause = true;
+		req->tx_pause = true;
+	} else {
+		req->rx_pause = false;
+		req->tx_pause = false;
+	}
+	req->pfc_en = pfvf->pfc_en;
+
+	if (!otx2_sync_mbox_msg(&pfvf->mbox)) {
+		rsp = (struct cgx_pfc_rsp *)
+		       otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
+		if (IS_ERR(rsp)) {
+			err = PTR_ERR(rsp);
+			goto unlock;
+		}
+
+		if (req->rx_pause != rsp->rx_pause || req->tx_pause != rsp->tx_pause) {
+			dev_warn(pfvf->dev,
+				 "Failed to config PFC\n");
+			err = -EPERM;
+		}
+	}
+unlock:
+	mutex_unlock(&pfvf->mbox.lock);
+	return err;
+}
+EXPORT_SYMBOL(otx2_config_priority_flow_ctrl);
+
+void otx2_update_bpid_in_rqctx(struct otx2_nic *pfvf, int vlan_prio, int qidx,
+			       bool pfc_enable)
+{
+	bool if_up = netif_running(pfvf->netdev);
+	struct npa_aq_enq_req *npa_aq;
+	struct nix_aq_enq_req *aq;
+	int err = 0;
+
+	if (pfvf->queue_to_pfc_map[qidx] && pfc_enable) {
+		dev_warn(pfvf->dev,
+			 "PFC enable not permitted as Priority %d already mapped to Queue %d\n",
+			 pfvf->queue_to_pfc_map[qidx], qidx);
+		return;
+	}
+
+	if (if_up) {
+		netif_tx_stop_all_queues(pfvf->netdev);
+		netif_carrier_off(pfvf->netdev);
+	}
+
+	pfvf->queue_to_pfc_map[qidx] = vlan_prio;
+
+	aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox);
+	if (!aq) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	aq->cq.bpid = pfvf->bpid[vlan_prio];
+	aq->cq_mask.bpid = GENMASK(8, 0);
+
+	/* Fill AQ info */
+	aq->qidx = qidx;
+	aq->ctype = NIX_AQ_CTYPE_CQ;
+	aq->op = NIX_AQ_INSTOP_WRITE;
+
+	otx2_sync_mbox_msg(&pfvf->mbox);
+
+	npa_aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
+	if (!npa_aq) {
+		err = -ENOMEM;
+		goto out;
+	}
+	npa_aq->aura.nix0_bpid = pfvf->bpid[vlan_prio];
+	npa_aq->aura_mask.nix0_bpid = GENMASK(8, 0);
+
+	/* Fill NPA AQ info */
+	npa_aq->aura_id = qidx;
+	npa_aq->ctype = NPA_AQ_CTYPE_AURA;
+	npa_aq->op = NPA_AQ_INSTOP_WRITE;
+	otx2_sync_mbox_msg(&pfvf->mbox);
+
+out:
+	if (if_up) {
+		netif_carrier_on(pfvf->netdev);
+		netif_tx_start_all_queues(pfvf->netdev);
+	}
+
+	if (err)
+		dev_warn(pfvf->dev,
+			 "Updating BPIDs in CQ and Aura contexts of RQ%d failed with err %d\n",
+			 qidx, err);
+}
+EXPORT_SYMBOL(otx2_update_bpid_in_rqctx);
+
+static int otx2_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
+{
+	struct otx2_nic *pfvf = netdev_priv(dev);
+
+	pfc->pfc_cap = IEEE_8021QAZ_MAX_TCS;
+	pfc->pfc_en = pfvf->pfc_en;
+
+	return 0;
+}
+
+static int otx2_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)
+{
+	struct otx2_nic *pfvf = netdev_priv(dev);
+	u8 old_pfc_en;
+	int err;
+
+	old_pfc_en = pfvf->pfc_en;
+	pfvf->pfc_en = pfc->pfc_en;
+
+	if (pfvf->hw.tx_queues >= NIX_PF_PFC_PRIO_MAX)
+		goto process_pfc;
+
+	/* Check if the PFC configuration can be
+	 * supported by the tx queue configuration
+	 */
+	err = otx2_check_pfc_config(pfvf);
+	if (err) {
+		pfvf->pfc_en = old_pfc_en;
+		return err;
+	}
+
+process_pfc:
+	err = otx2_config_priority_flow_ctrl(pfvf);
+	if (err) {
+		pfvf->pfc_en = old_pfc_en;
+		return err;
+	}
+
+	/* Default disable backpressure on NIX-CPT */
+	otx2_nix_cpt_config_bp(pfvf, false);
+
+	/* Request Per channel Bpids */
+	if (pfc->pfc_en)
+		otx2_nix_config_bp(pfvf, true);
+
+	err = otx2_pfc_txschq_update(pfvf);
+	if (err) {
+		if (pfc->pfc_en)
+			otx2_nix_config_bp(pfvf, false);
+
+		otx2_pfc_txschq_stop(pfvf);
+		pfvf->pfc_en = old_pfc_en;
+		otx2_config_priority_flow_ctrl(pfvf);
+		dev_err(pfvf->dev, "%s failed to update TX schedulers\n", __func__);
+		return err;
+	}
+
+	return 0;
+}
+
+static u8 otx2_dcbnl_getdcbx(struct net_device __always_unused *dev)
+{
+	return DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE;
+}
+
+static u8 otx2_dcbnl_setdcbx(struct net_device __always_unused *dev, u8 mode)
+{
+	return (mode != (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE)) ? 1 : 0;
+}
+
+static const struct dcbnl_rtnl_ops otx2_dcbnl_ops = {
+	.ieee_getpfc	= otx2_dcbnl_ieee_getpfc,
+	.ieee_setpfc	= otx2_dcbnl_ieee_setpfc,
+	.getdcbx	= otx2_dcbnl_getdcbx,
+	.setdcbx	= otx2_dcbnl_setdcbx,
+};
+
+int otx2_dcbnl_set_ops(struct net_device *dev)
+{
+	struct otx2_nic *pfvf = netdev_priv(dev);
+
+	pfvf->queue_to_pfc_map = devm_kzalloc(pfvf->dev, pfvf->hw.rx_queues,
+					      GFP_KERNEL);
+	if (!pfvf->queue_to_pfc_map)
+		return -ENOMEM;
+	dev->dcbnl_ops = &otx2_dcbnl_ops;
+
+	return 0;
+}
+EXPORT_SYMBOL(otx2_dcbnl_set_ops);

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c

@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU PF/VF Netdev Devlink
+ *
+ * Copyright (C) 2021 Marvell.
+ */
+
+#include "otx2_common.h"
+
+/* Devlink Params APIs */
+static int otx2_dl_mcam_count_validate(struct devlink *devlink, u32 id,
+				       union devlink_param_value *val,
+				       struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+	struct otx2_flow_config *flow_cfg;
+
+	if (!pfvf->flow_cfg) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "pfvf->flow_cfg not initialized");
+		return -EINVAL;
+	}
+
+	flow_cfg = pfvf->flow_cfg;
+	if (flow_cfg && flow_cfg->nr_flows) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Cannot modify count when there are active rules");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int otx2_dl_mcam_count_set(struct devlink *devlink, u32 id,
+				  struct devlink_param_gset_ctx *ctx,
+				  struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+
+	if (!pfvf->flow_cfg)
+		return 0;
+
+	pfvf->flow_cfg->ntuple_cnt = ctx->val.vu16;
+	otx2_alloc_mcam_entries(pfvf, ctx->val.vu16);
+
+	return 0;
+}
+
+static int otx2_dl_mcam_count_get(struct devlink *devlink, u32 id,
+				  struct devlink_param_gset_ctx *ctx,
+				  struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+	struct otx2_flow_config *flow_cfg;
+
+	if (!pfvf->flow_cfg) {
+		ctx->val.vu16 = 0;
+		return 0;
+	}
+
+	flow_cfg = pfvf->flow_cfg;
+	ctx->val.vu16 = flow_cfg->max_flows;
+
+	return 0;
+}
+
+static int otx2_dl_ucast_flt_cnt_set(struct devlink *devlink, u32 id,
+				     struct devlink_param_gset_ctx *ctx,
+				     struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+	int err;
+
+	pfvf->flow_cfg->ucast_flt_cnt = ctx->val.vu8;
+
+	otx2_mcam_flow_del(pfvf);
+	err = otx2_mcam_entry_init(pfvf);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int otx2_dl_ucast_flt_cnt_get(struct devlink *devlink, u32 id,
+				     struct devlink_param_gset_ctx *ctx,
+				     struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+
+	ctx->val.vu8 = pfvf->flow_cfg ? pfvf->flow_cfg->ucast_flt_cnt : 0;
+
+	return 0;
+}
+
+static int otx2_dl_ucast_flt_cnt_validate(struct devlink *devlink, u32 id,
+					  union devlink_param_value *val,
+					  struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+
+	/* Check for UNICAST filter support*/
+	if (!(pfvf->flags & OTX2_FLAG_UCAST_FLTR_SUPPORT)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Unicast filter not enabled");
+		return -EINVAL;
+	}
+
+	if (!pfvf->flow_cfg) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "pfvf->flow_cfg not initialized");
+		return -EINVAL;
+	}
+
+	if (pfvf->flow_cfg->nr_flows) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Cannot modify count when there are active rules");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+enum otx2_dl_param_id {
+	OTX2_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
+	OTX2_DEVLINK_PARAM_ID_MCAM_COUNT,
+	OTX2_DEVLINK_PARAM_ID_UCAST_FLT_CNT,
+};
+
+static const struct devlink_param otx2_dl_params[] = {
+	DEVLINK_PARAM_DRIVER(OTX2_DEVLINK_PARAM_ID_MCAM_COUNT,
+			     "mcam_count", DEVLINK_PARAM_TYPE_U16,
+			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+			     otx2_dl_mcam_count_get, otx2_dl_mcam_count_set,
+			     otx2_dl_mcam_count_validate),
+	DEVLINK_PARAM_DRIVER(OTX2_DEVLINK_PARAM_ID_UCAST_FLT_CNT,
+			     "unicast_filter_count", DEVLINK_PARAM_TYPE_U8,
+			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+			     otx2_dl_ucast_flt_cnt_get, otx2_dl_ucast_flt_cnt_set,
+			     otx2_dl_ucast_flt_cnt_validate),
+};
+
+#ifdef CONFIG_RVU_ESWITCH
+static int otx2_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+
+	if (!otx2_rep_dev(pfvf->pdev))
+		return -EOPNOTSUPP;
+
+	*mode = pfvf->esw_mode;
+
+	return 0;
+}
+
+static int otx2_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
+					 struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+	int ret = 0;
+
+	if (!otx2_rep_dev(pfvf->pdev))
+		return -EOPNOTSUPP;
+
+	if (pfvf->esw_mode == mode)
+		return 0;
+
+	switch (mode) {
+	case DEVLINK_ESWITCH_MODE_LEGACY:
+		rvu_rep_destroy(pfvf);
+		break;
+	case DEVLINK_ESWITCH_MODE_SWITCHDEV:
+		ret = rvu_rep_create(pfvf, extack);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (!ret)
+		pfvf->esw_mode = mode;
+
+	return ret;
+}
+#endif
+
+static const struct devlink_ops otx2_devlink_ops = {
+#ifdef CONFIG_RVU_ESWITCH
+	.eswitch_mode_get = otx2_devlink_eswitch_mode_get,
+	.eswitch_mode_set = otx2_devlink_eswitch_mode_set,
+#endif
+};
+
+int otx2_register_dl(struct otx2_nic *pfvf)
+{
+	struct otx2_devlink *otx2_dl;
+	struct devlink *dl;
+	int err;
+
+	dl = devlink_alloc(&otx2_devlink_ops,
+			   sizeof(struct otx2_devlink), pfvf->dev);
+	if (!dl) {
+		dev_warn(pfvf->dev, "devlink_alloc failed\n");
+		return -ENOMEM;
+	}
+
+	otx2_dl = devlink_priv(dl);
+	otx2_dl->dl = dl;
+	otx2_dl->pfvf = pfvf;
+	pfvf->dl = otx2_dl;
+
+	err = devlink_params_register(dl, otx2_dl_params,
+				      ARRAY_SIZE(otx2_dl_params));
+	if (err) {
+		dev_err(pfvf->dev,
+			"devlink params register failed with error %d", err);
+		goto err_dl;
+	}
+
+	devlink_register(dl);
+	return 0;
+
+err_dl:
+	devlink_free(dl);
+	return err;
+}
+EXPORT_SYMBOL(otx2_register_dl);
+
+void otx2_unregister_dl(struct otx2_nic *pfvf)
+{
+	struct otx2_devlink *otx2_dl = pfvf->dl;
+	struct devlink *dl = otx2_dl->dl;
+
+	devlink_unregister(dl);
+	devlink_params_unregister(dl, otx2_dl_params,
+				  ARRAY_SIZE(otx2_dl_params));
+	devlink_free(dl);
+}
+EXPORT_SYMBOL(otx2_unregister_dl);

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.h

@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU PF/VF Netdev Devlink
+ *
+ * Copyright (C) 2021 Marvell.
+ *
+ */
+
+#ifndef	OTX2_DEVLINK_H
+#define	OTX2_DEVLINK_H
+
+struct otx2_devlink {
+	struct devlink *dl;
+	struct otx2_nic *pfvf;
+};
+
+/* Devlink APIs */
+int otx2_register_dl(struct otx2_nic *pfvf);
+void otx2_unregister_dl(struct otx2_nic *pfvf);
+
+#endif /* OTX2_DEVLINK_H */

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dmac_flt.c

@@ -0,0 +1,218 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2021 Marvell.
+ *
+ */
+
+#include "otx2_common.h"
+
+static int otx2_dmacflt_do_add(struct otx2_nic *pf, const u8 *mac,
+			       u32 *dmac_index)
+{
+	struct cgx_mac_addr_add_req *req;
+	struct cgx_mac_addr_add_rsp *rsp;
+	int err;
+
+	mutex_lock(&pf->mbox.lock);
+
+	req = otx2_mbox_alloc_msg_cgx_mac_addr_add(&pf->mbox);
+	if (!req) {
+		mutex_unlock(&pf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	ether_addr_copy(req->mac_addr, mac);
+	err = otx2_sync_mbox_msg(&pf->mbox);
+
+	if (!err) {
+		rsp = (struct cgx_mac_addr_add_rsp *)
+			 otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &req->hdr);
+		if (IS_ERR(rsp)) {
+			mutex_unlock(&pf->mbox.lock);
+			return PTR_ERR(rsp);
+		}
+
+		*dmac_index = rsp->index;
+	}
+
+	mutex_unlock(&pf->mbox.lock);
+	return err;
+}
+
+static int otx2_dmacflt_add_pfmac(struct otx2_nic *pf, u32 *dmac_index)
+{
+	struct cgx_mac_addr_set_or_get *req;
+	struct cgx_mac_addr_set_or_get *rsp;
+	int err;
+
+	mutex_lock(&pf->mbox.lock);
+
+	req = otx2_mbox_alloc_msg_cgx_mac_addr_set(&pf->mbox);
+	if (!req) {
+		mutex_unlock(&pf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	req->index = *dmac_index;
+
+	ether_addr_copy(req->mac_addr, pf->netdev->dev_addr);
+	err = otx2_sync_mbox_msg(&pf->mbox);
+
+	if (err)
+		goto out;
+
+	rsp = (struct cgx_mac_addr_set_or_get *)
+		otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &req->hdr);
+
+	if (IS_ERR_OR_NULL(rsp)) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	*dmac_index = rsp->index;
+out:
+	mutex_unlock(&pf->mbox.lock);
+	return err;
+}
+
+int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u32 bit_pos)
+{
+	u32 *dmacindex;
+
+	/* Store dmacindex returned by CGX/RPM driver which will
+	 * be used for macaddr update/remove
+	 */
+	dmacindex = &pf->flow_cfg->bmap_to_dmacindex[bit_pos];
+
+	if (ether_addr_equal(mac, pf->netdev->dev_addr))
+		return otx2_dmacflt_add_pfmac(pf, dmacindex);
+	else
+		return otx2_dmacflt_do_add(pf, mac, dmacindex);
+}
+
+static int otx2_dmacflt_do_remove(struct otx2_nic *pfvf, const u8 *mac,
+				  u32 dmac_index)
+{
+	struct cgx_mac_addr_del_req *req;
+	int err;
+
+	mutex_lock(&pfvf->mbox.lock);
+	req = otx2_mbox_alloc_msg_cgx_mac_addr_del(&pfvf->mbox);
+	if (!req) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	req->index = dmac_index;
+
+	err = otx2_sync_mbox_msg(&pfvf->mbox);
+	mutex_unlock(&pfvf->mbox.lock);
+
+	return err;
+}
+
+static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf, u32 dmac_index)
+{
+	struct cgx_mac_addr_reset_req *req;
+	int err;
+
+	mutex_lock(&pf->mbox.lock);
+	req = otx2_mbox_alloc_msg_cgx_mac_addr_reset(&pf->mbox);
+	if (!req) {
+		mutex_unlock(&pf->mbox.lock);
+		return -ENOMEM;
+	}
+	req->index = dmac_index;
+
+	err = otx2_sync_mbox_msg(&pf->mbox);
+
+	mutex_unlock(&pf->mbox.lock);
+	return err;
+}
+
+int otx2_dmacflt_remove(struct otx2_nic *pf, const u8 *mac,
+			u32 bit_pos)
+{
+	u32 dmacindex = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
+
+	if (ether_addr_equal(mac, pf->netdev->dev_addr))
+		return otx2_dmacflt_remove_pfmac(pf, dmacindex);
+	else
+		return otx2_dmacflt_do_remove(pf, mac, dmacindex);
+}
+
+/* CGX/RPM blocks support max unicast entries of 32.
+ * on typical configuration MAC block associated
+ * with 4 lmacs, each lmac will have 8 dmac entries
+ */
+int otx2_dmacflt_get_max_cnt(struct otx2_nic *pf)
+{
+	struct cgx_max_dmac_entries_get_rsp *rsp;
+	struct msg_req *msg;
+	int err;
+
+	mutex_lock(&pf->mbox.lock);
+	msg = otx2_mbox_alloc_msg_cgx_mac_max_entries_get(&pf->mbox);
+
+	if (!msg) {
+		mutex_unlock(&pf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	err = otx2_sync_mbox_msg(&pf->mbox);
+	if (err)
+		goto out;
+
+	rsp = (struct cgx_max_dmac_entries_get_rsp *)
+		     otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &msg->hdr);
+
+	if (IS_ERR_OR_NULL(rsp)) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	pf->flow_cfg->dmacflt_max_flows = rsp->max_dmac_filters;
+
+out:
+	mutex_unlock(&pf->mbox.lock);
+	return err;
+}
+
+int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u32 bit_pos)
+{
+	struct cgx_mac_addr_update_req *req;
+	struct cgx_mac_addr_update_rsp *rsp;
+	int rc;
+
+	mutex_lock(&pf->mbox.lock);
+
+	req = otx2_mbox_alloc_msg_cgx_mac_addr_update(&pf->mbox);
+
+	if (!req) {
+		mutex_unlock(&pf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	ether_addr_copy(req->mac_addr, mac);
+	req->index = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
+
+	/* check the response and change index */
+
+	rc = otx2_sync_mbox_msg(&pf->mbox);
+	if (rc)
+		goto out;
+
+	rsp = (struct cgx_mac_addr_update_rsp *)
+		otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &req->hdr);
+	if (IS_ERR(rsp)) {
+		rc = PTR_ERR(rsp);
+		goto out;
+	}
+
+	pf->flow_cfg->bmap_to_dmacindex[bit_pos] = rsp->index;
+
+out:
+	mutex_unlock(&pf->mbox.lock);
+	return rc;
+}

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.c

@@ -0,0 +1,524 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#include <linux/module.h>
+
+#include "otx2_common.h"
+#include "otx2_ptp.h"
+
+static bool is_tstmp_atomic_update_supported(struct otx2_ptp *ptp)
+{
+	struct ptp_get_cap_rsp *rsp;
+	struct msg_req *req;
+	int err;
+
+	if (!ptp->nic)
+		return false;
+
+	mutex_lock(&ptp->nic->mbox.lock);
+	req = otx2_mbox_alloc_msg_ptp_get_cap(&ptp->nic->mbox);
+	if (!req) {
+		mutex_unlock(&ptp->nic->mbox.lock);
+		return false;
+	}
+
+	err = otx2_sync_mbox_msg(&ptp->nic->mbox);
+	if (err) {
+		mutex_unlock(&ptp->nic->mbox.lock);
+		return false;
+	}
+	rsp = (struct ptp_get_cap_rsp *)otx2_mbox_get_rsp(&ptp->nic->mbox.mbox, 0,
+							  &req->hdr);
+	mutex_unlock(&ptp->nic->mbox.lock);
+
+	if (IS_ERR(rsp))
+		return false;
+
+	if (rsp->cap & PTP_CAP_HW_ATOMIC_UPDATE)
+		return true;
+
+	return false;
+}
+
+static int otx2_ptp_hw_adjtime(struct ptp_clock_info *ptp_info, s64 delta)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	struct otx2_nic *pfvf = ptp->nic;
+	struct ptp_req *req;
+	int rc;
+
+	if (!ptp->nic)
+		return -ENODEV;
+
+	mutex_lock(&pfvf->mbox.lock);
+	req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox);
+	if (!req) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return -ENOMEM;
+	}
+	req->op = PTP_OP_ADJTIME;
+	req->delta = delta;
+	rc = otx2_sync_mbox_msg(&ptp->nic->mbox);
+	mutex_unlock(&pfvf->mbox.lock);
+
+	return rc;
+}
+
+static u64 otx2_ptp_get_clock(struct otx2_ptp *ptp)
+{
+	struct ptp_req *req;
+	struct ptp_rsp *rsp;
+	int err;
+
+	if (!ptp->nic)
+		return 0;
+
+	req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox);
+	if (!req)
+		return 0;
+
+	req->op = PTP_OP_GET_CLOCK;
+
+	err = otx2_sync_mbox_msg(&ptp->nic->mbox);
+	if (err)
+		return 0;
+
+	rsp = (struct ptp_rsp *)otx2_mbox_get_rsp(&ptp->nic->mbox.mbox, 0,
+						  &req->hdr);
+	if (IS_ERR(rsp))
+		return 0;
+
+	return rsp->clk;
+}
+
+static int otx2_ptp_hw_gettime(struct ptp_clock_info *ptp_info,
+			       struct timespec64 *ts)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	u64 tstamp;
+
+	tstamp = otx2_ptp_get_clock(ptp);
+
+	*ts = ns_to_timespec64(tstamp);
+	return 0;
+}
+
+static int otx2_ptp_hw_settime(struct ptp_clock_info *ptp_info,
+			       const struct timespec64 *ts)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	struct otx2_nic *pfvf = ptp->nic;
+	struct ptp_req *req;
+	u64 nsec;
+	int rc;
+
+	if (!ptp->nic)
+		return -ENODEV;
+
+	nsec = timespec64_to_ns(ts);
+
+	mutex_lock(&pfvf->mbox.lock);
+	req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox);
+	if (!req) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	req->op = PTP_OP_SET_CLOCK;
+	req->clk = nsec;
+	rc = otx2_sync_mbox_msg(&ptp->nic->mbox);
+	mutex_unlock(&pfvf->mbox.lock);
+
+	return rc;
+}
+
+static int otx2_ptp_adjfine(struct ptp_clock_info *ptp_info, long scaled_ppm)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	struct ptp_req *req;
+
+	if (!ptp->nic)
+		return -ENODEV;
+
+	req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox);
+	if (!req)
+		return -ENOMEM;
+
+	req->op = PTP_OP_ADJFINE;
+	req->scaled_ppm = scaled_ppm;
+
+	return otx2_sync_mbox_msg(&ptp->nic->mbox);
+}
+
+static int ptp_set_thresh(struct otx2_ptp *ptp, u64 thresh)
+{
+	struct ptp_req *req;
+
+	if (!ptp->nic)
+		return -ENODEV;
+
+	req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox);
+	if (!req)
+		return -ENOMEM;
+
+	req->op = PTP_OP_SET_THRESH;
+	req->thresh = thresh;
+
+	return otx2_sync_mbox_msg(&ptp->nic->mbox);
+}
+
+static int ptp_pps_on(struct otx2_ptp *ptp, int on, u64 period)
+{
+	struct ptp_req *req;
+
+	if (!ptp->nic)
+		return -ENODEV;
+
+	req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox);
+	if (!req)
+		return -ENOMEM;
+
+	req->op = PTP_OP_PPS_ON;
+	req->pps_on = on;
+	req->period = period;
+
+	return otx2_sync_mbox_msg(&ptp->nic->mbox);
+}
+
+static u64 ptp_cc_read(struct cyclecounter *cc)
+{
+	struct otx2_ptp *ptp = container_of(cc, struct otx2_ptp, cycle_counter);
+
+	return otx2_ptp_get_clock(ptp);
+}
+
+static u64 ptp_tstmp_read(struct otx2_ptp *ptp)
+{
+	struct ptp_req *req;
+	struct ptp_rsp *rsp;
+	int err;
+
+	if (!ptp->nic)
+		return 0;
+
+	req = otx2_mbox_alloc_msg_ptp_op(&ptp->nic->mbox);
+	if (!req)
+		return 0;
+
+	req->op = PTP_OP_GET_TSTMP;
+
+	err = otx2_sync_mbox_msg(&ptp->nic->mbox);
+	if (err)
+		return 0;
+
+	rsp = (struct ptp_rsp *)otx2_mbox_get_rsp(&ptp->nic->mbox.mbox, 0,
+						  &req->hdr);
+	if (IS_ERR(rsp))
+		return 0;
+
+	return rsp->clk;
+}
+
+static int otx2_ptp_tc_adjtime(struct ptp_clock_info *ptp_info, s64 delta)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	struct otx2_nic *pfvf = ptp->nic;
+
+	mutex_lock(&pfvf->mbox.lock);
+	timecounter_adjtime(&ptp->time_counter, delta);
+	mutex_unlock(&pfvf->mbox.lock);
+
+	return 0;
+}
+
+static int otx2_ptp_tc_gettime(struct ptp_clock_info *ptp_info,
+			       struct timespec64 *ts)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	u64 tstamp;
+
+	mutex_lock(&ptp->nic->mbox.lock);
+	tstamp = timecounter_read(&ptp->time_counter);
+	mutex_unlock(&ptp->nic->mbox.lock);
+	*ts = ns_to_timespec64(tstamp);
+
+	return 0;
+}
+
+static int otx2_ptp_tc_settime(struct ptp_clock_info *ptp_info,
+			       const struct timespec64 *ts)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	u64 nsec;
+
+	nsec = timespec64_to_ns(ts);
+
+	mutex_lock(&ptp->nic->mbox.lock);
+	timecounter_init(&ptp->time_counter, &ptp->cycle_counter, nsec);
+	mutex_unlock(&ptp->nic->mbox.lock);
+
+	return 0;
+}
+
+static int otx2_ptp_verify_pin(struct ptp_clock_info *ptp, unsigned int pin,
+			       enum ptp_pin_function func, unsigned int chan)
+{
+	switch (func) {
+	case PTP_PF_NONE:
+	case PTP_PF_EXTTS:
+	case PTP_PF_PEROUT:
+		break;
+	case PTP_PF_PHYSYNC:
+		return -1;
+	}
+	return 0;
+}
+
+static u64 otx2_ptp_hw_tstamp2time(const struct timecounter *time_counter, u64 tstamp)
+{
+	/* On HW which supports atomic updates, timecounter is not initialized */
+	return tstamp;
+}
+
+static void otx2_ptp_extts_check(struct work_struct *work)
+{
+	struct otx2_ptp *ptp = container_of(work, struct otx2_ptp,
+					    extts_work.work);
+	struct ptp_clock_event event;
+	u64 tstmp, new_thresh;
+
+	mutex_lock(&ptp->nic->mbox.lock);
+	tstmp = ptp_tstmp_read(ptp);
+	mutex_unlock(&ptp->nic->mbox.lock);
+
+	if (tstmp != ptp->last_extts) {
+		event.type = PTP_CLOCK_EXTTS;
+		event.index = 0;
+		event.timestamp = ptp->ptp_tstamp2nsec(&ptp->time_counter, tstmp);
+		ptp_clock_event(ptp->ptp_clock, &event);
+		new_thresh = tstmp % 500000000;
+		if (ptp->thresh != new_thresh) {
+			mutex_lock(&ptp->nic->mbox.lock);
+			ptp_set_thresh(ptp, new_thresh);
+			mutex_unlock(&ptp->nic->mbox.lock);
+			ptp->thresh = new_thresh;
+		}
+		ptp->last_extts = tstmp;
+	}
+	schedule_delayed_work(&ptp->extts_work, msecs_to_jiffies(200));
+}
+
+static void otx2_sync_tstamp(struct work_struct *work)
+{
+	struct otx2_ptp *ptp = container_of(work, struct otx2_ptp,
+					    synctstamp_work.work);
+	struct otx2_nic *pfvf = ptp->nic;
+	u64 tstamp;
+
+	mutex_lock(&pfvf->mbox.lock);
+	tstamp = otx2_ptp_get_clock(ptp);
+	mutex_unlock(&pfvf->mbox.lock);
+
+	ptp->tstamp = ptp->ptp_tstamp2nsec(&ptp->time_counter, tstamp);
+	ptp->base_ns = tstamp % NSEC_PER_SEC;
+
+	schedule_delayed_work(&ptp->synctstamp_work, msecs_to_jiffies(250));
+}
+
+static int otx2_ptp_enable(struct ptp_clock_info *ptp_info,
+			   struct ptp_clock_request *rq, int on)
+{
+	struct otx2_ptp *ptp = container_of(ptp_info, struct otx2_ptp,
+					    ptp_info);
+	u64 period = 0;
+	int pin;
+
+	if (!ptp->nic)
+		return -ENODEV;
+
+	switch (rq->type) {
+	case PTP_CLK_REQ_EXTTS:
+		pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_EXTTS,
+				   rq->extts.index);
+		if (pin < 0)
+			return -EBUSY;
+		if (on)
+			schedule_delayed_work(&ptp->extts_work, msecs_to_jiffies(200));
+		else
+			cancel_delayed_work_sync(&ptp->extts_work);
+
+		return 0;
+	case PTP_CLK_REQ_PEROUT:
+		if (rq->perout.flags)
+			return -EOPNOTSUPP;
+
+		if (rq->perout.index >= ptp_info->n_pins)
+			return -EINVAL;
+		if (on) {
+			period = rq->perout.period.sec * NSEC_PER_SEC +
+				 rq->perout.period.nsec;
+			ptp_pps_on(ptp, on, period);
+		} else {
+			ptp_pps_on(ptp, on, period);
+		}
+		return 0;
+	default:
+		break;
+	}
+	return -EOPNOTSUPP;
+}
+
+int otx2_ptp_init(struct otx2_nic *pfvf)
+{
+	struct otx2_ptp *ptp_ptr;
+	struct cyclecounter *cc;
+	struct ptp_req *req;
+	int err;
+
+	if (is_otx2_lbkvf(pfvf->pdev)) {
+		pfvf->ptp = NULL;
+		return 0;
+	}
+
+	mutex_lock(&pfvf->mbox.lock);
+	/* check if PTP block is available */
+	req = otx2_mbox_alloc_msg_ptp_op(&pfvf->mbox);
+	if (!req) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	req->op = PTP_OP_GET_CLOCK;
+
+	err = otx2_sync_mbox_msg(&pfvf->mbox);
+	if (err) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return err;
+	}
+	mutex_unlock(&pfvf->mbox.lock);
+
+	ptp_ptr = kzalloc_obj(*ptp_ptr);
+	if (!ptp_ptr) {
+		err = -ENOMEM;
+		goto error;
+	}
+
+	ptp_ptr->nic = pfvf;
+
+	snprintf(ptp_ptr->extts_config.name, sizeof(ptp_ptr->extts_config.name), "TSTAMP");
+	ptp_ptr->extts_config.index = 0;
+	ptp_ptr->extts_config.func = PTP_PF_NONE;
+
+	ptp_ptr->ptp_info = (struct ptp_clock_info) {
+		.owner          = THIS_MODULE,
+		.name           = "OcteonTX2 PTP",
+		.max_adj        = 1000000000ull,
+		.n_ext_ts       = 1,
+		.n_per_out      = 1,
+		.n_pins         = 1,
+		.pps            = 0,
+		.pin_config     = &ptp_ptr->extts_config,
+		.adjfine        = otx2_ptp_adjfine,
+		.enable         = otx2_ptp_enable,
+		.verify         = otx2_ptp_verify_pin,
+	};
+
+	/* Check whether hardware supports atomic updates to timestamp */
+	if (is_tstmp_atomic_update_supported(ptp_ptr)) {
+		ptp_ptr->ptp_info.adjtime = otx2_ptp_hw_adjtime;
+		ptp_ptr->ptp_info.gettime64 = otx2_ptp_hw_gettime;
+		ptp_ptr->ptp_info.settime64 = otx2_ptp_hw_settime;
+
+		ptp_ptr->ptp_tstamp2nsec = otx2_ptp_hw_tstamp2time;
+	} else {
+		ptp_ptr->ptp_info.adjtime = otx2_ptp_tc_adjtime;
+		ptp_ptr->ptp_info.gettime64 = otx2_ptp_tc_gettime;
+		ptp_ptr->ptp_info.settime64 = otx2_ptp_tc_settime;
+
+		cc = &ptp_ptr->cycle_counter;
+		cc->read = ptp_cc_read;
+		cc->mask = CYCLECOUNTER_MASK(64);
+		cc->mult = 1;
+		cc->shift = 0;
+		ptp_ptr->ptp_tstamp2nsec = timecounter_cyc2time;
+
+		timecounter_init(&ptp_ptr->time_counter, &ptp_ptr->cycle_counter,
+				 ktime_to_ns(ktime_get_real()));
+	}
+
+	INIT_DELAYED_WORK(&ptp_ptr->extts_work, otx2_ptp_extts_check);
+
+	ptp_ptr->ptp_clock = ptp_clock_register(&ptp_ptr->ptp_info, pfvf->dev);
+	if (IS_ERR_OR_NULL(ptp_ptr->ptp_clock)) {
+		err = ptp_ptr->ptp_clock ?
+		      PTR_ERR(ptp_ptr->ptp_clock) : -ENODEV;
+		kfree(ptp_ptr);
+		goto error;
+	}
+
+	if (is_dev_otx2(pfvf->pdev)) {
+		ptp_ptr->convert_rx_ptp_tstmp = &otx2_ptp_convert_rx_timestamp;
+		ptp_ptr->convert_tx_ptp_tstmp = &otx2_ptp_convert_tx_timestamp;
+	} else {
+		ptp_ptr->convert_rx_ptp_tstmp = &cn10k_ptp_convert_timestamp;
+		ptp_ptr->convert_tx_ptp_tstmp = &cn10k_ptp_convert_timestamp;
+	}
+
+	INIT_DELAYED_WORK(&ptp_ptr->synctstamp_work, otx2_sync_tstamp);
+
+	pfvf->ptp = ptp_ptr;
+
+error:
+	return err;
+}
+EXPORT_SYMBOL_GPL(otx2_ptp_init);
+
+void otx2_ptp_destroy(struct otx2_nic *pfvf)
+{
+	struct otx2_ptp *ptp = pfvf->ptp;
+
+	if (!ptp)
+		return;
+
+	cancel_delayed_work_sync(&pfvf->ptp->synctstamp_work);
+
+	ptp_clock_unregister(ptp->ptp_clock);
+	kfree(ptp);
+	pfvf->ptp = NULL;
+}
+EXPORT_SYMBOL_GPL(otx2_ptp_destroy);
+
+int otx2_ptp_clock_index(struct otx2_nic *pfvf)
+{
+	if (!pfvf->ptp)
+		return -ENODEV;
+
+	return ptp_clock_index(pfvf->ptp->ptp_clock);
+}
+EXPORT_SYMBOL_GPL(otx2_ptp_clock_index);
+
+int otx2_ptp_tstamp2time(struct otx2_nic *pfvf, u64 tstamp, u64 *tsns)
+{
+	if (!pfvf->ptp)
+		return -ENODEV;
+
+	*tsns = pfvf->ptp->ptp_tstamp2nsec(&pfvf->ptp->time_counter, tstamp);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(otx2_ptp_tstamp2time);
+
+MODULE_AUTHOR("Sunil Goutham <sgoutham@marvell.com>");
+MODULE_DESCRIPTION("Marvell RVU NIC PTP Driver");
+MODULE_LICENSE("GPL v2");

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ptp.h

@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef OTX2_PTP_H
+#define OTX2_PTP_H
+
+static inline u64 otx2_ptp_convert_rx_timestamp(u64 timestamp)
+{
+	return be64_to_cpu(*(__be64 *)&timestamp);
+}
+
+static inline u64 otx2_ptp_convert_tx_timestamp(u64 timestamp)
+{
+	return timestamp;
+}
+
+static inline u64 cn10k_ptp_convert_timestamp(u64 timestamp)
+{
+	return ((timestamp >> 32) * NSEC_PER_SEC) + (timestamp & 0xFFFFFFFFUL);
+}
+
+int otx2_ptp_init(struct otx2_nic *pfvf);
+void otx2_ptp_destroy(struct otx2_nic *pfvf);
+
+int otx2_ptp_clock_index(struct otx2_nic *pfvf);
+int otx2_ptp_tstamp2time(struct otx2_nic *pfvf, u64 tstamp, u64 *tsns);
+
+#endif

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_reg.h

@@ -0,0 +1,165 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef OTX2_REG_H
+#define OTX2_REG_H
+
+#include <rvu_struct.h>
+
+/* RVU PF registers */
+#define	RVU_PF_VFX_PFVF_MBOX0		    (0x00000)
+#define	RVU_PF_VFX_PFVF_MBOX1		    (0x00008)
+#define RVU_PF_VFX_PFVF_MBOXX(a, b)         (0x0 | (a) << 12 | (b) << 3)
+#define RVU_PF_VF_BAR4_ADDR                 (0x10)
+#define RVU_PF_BLOCK_ADDRX_DISC(a)          (0x200 | (a) << 3)
+#define RVU_PF_VFME_STATUSX(a)              (0x800 | (a) << 3)
+#define RVU_PF_VFTRPENDX(a)                 (0x820 | (a) << 3)
+#define RVU_PF_VFTRPEND_W1SX(a)             (0x840 | (a) << 3)
+#define RVU_PF_VFPF_MBOX_INTX(a)            (0x880 | (a) << 3)
+#define RVU_PF_VFPF_MBOX_INT_W1SX(a)        (0x8A0 | (a) << 3)
+#define RVU_PF_VFPF_MBOX_INT_ENA_W1SX(a)    (0x8C0 | (a) << 3)
+#define RVU_PF_VFPF_MBOX_INT_ENA_W1CX(a)    (0x8E0 | (a) << 3)
+#define RVU_PF_VFFLR_INTX(a)                (0x900 | (a) << 3)
+#define RVU_PF_VFFLR_INT_W1SX(a)            (0x920 | (a) << 3)
+#define RVU_PF_VFFLR_INT_ENA_W1SX(a)        (0x940 | (a) << 3)
+#define RVU_PF_VFFLR_INT_ENA_W1CX(a)        (0x960 | (a) << 3)
+#define RVU_PF_VFME_INTX(a)                 (0x980 | (a) << 3)
+#define RVU_PF_VFME_INT_W1SX(a)             (0x9A0 | (a) << 3)
+#define RVU_PF_VFME_INT_ENA_W1SX(a)         (0x9C0 | (a) << 3)
+#define RVU_PF_VFME_INT_ENA_W1CX(a)         (0x9E0 | (a) << 3)
+#define RVU_PF_PFAF_MBOX0                   (0xC00)
+#define RVU_PF_PFAF_MBOX1                   (0xC08)
+#define RVU_PF_PFAF_MBOXX(a)                (0xC00 | (a) << 3)
+#define RVU_PF_INT                          (0xc20)
+#define RVU_PF_INT_W1S                      (0xc28)
+#define RVU_PF_INT_ENA_W1S                  (0xc30)
+#define RVU_PF_INT_ENA_W1C                  (0xc38)
+#define RVU_PF_MSIX_VECX_ADDR(a)            (0x000 | (a) << 4)
+#define RVU_PF_MSIX_VECX_CTL(a)             (0x008 | (a) << 4)
+#define RVU_PF_MSIX_PBAX(a)                 (0xF0000 | (a) << 3)
+#define RVU_PF_VF_MBOX_ADDR                 (0xC40)
+#define RVU_PF_LMTLINE_ADDR                 (0xC48)
+
+#define RVU_MBOX_PF_VFX_PFVF_TRIGX(a)		(0x2000 | (a) << 3)
+#define RVU_MBOX_PF_VFPF_INTX(a)		(0x1000 | (a) << 3)
+#define RVU_MBOX_PF_VFPF_INT_W1SX(a)		(0x1020 | (a) << 3)
+#define RVU_MBOX_PF_VFPF_INT_ENA_W1SX(a)	(0x1040 | (a) << 3)
+#define RVU_MBOX_PF_VFPF_INT_ENA_W1CX(a)	(0x1060 | (a) << 3)
+
+#define RVU_MBOX_PF_VFPF1_INTX(a)		(0x1080 | (a) << 3)
+#define RVU_MBOX_PF_VFPF1_INT_W1SX(a)		(0x10a0 | (a) << 3)
+#define RVU_MBOX_PF_VFPF1_INT_ENA_W1SX(a)	(0x10c0 | (a) << 3)
+#define RVU_MBOX_PF_VFPF1_INT_ENA_W1CX(a)	(0x10e0 | (a) << 3)
+
+/* RVU VF registers */
+#define	RVU_VF_VFPF_MBOX0		    (0x00000)
+#define	RVU_VF_VFPF_MBOX1		    (0x00008)
+#define	RVU_VF_VFPF_MBOXX(a)		    (0x00 | (a) << 3)
+#define	RVU_VF_INT			    (0x20)
+#define	RVU_VF_INT_W1S			    (0x28)
+#define	RVU_VF_INT_ENA_W1S		    (0x30)
+#define	RVU_VF_INT_ENA_W1C		    (0x38)
+#define	RVU_VF_BLOCK_ADDRX_DISC(a)	    (0x200 | (a) << 3)
+#define	RVU_VF_MSIX_VECX_ADDR(a)	    (0x000 | (a) << 4)
+#define	RVU_VF_MSIX_VECX_CTL(a)		    (0x008 | (a) << 4)
+#define	RVU_VF_MSIX_PBAX(a)		    (0xF0000 | (a) << 3)
+#define RVU_VF_MBOX_REGION                  (0xC0000)
+
+/* CN20K RVU_MBOX_E: RVU PF/VF MBOX Address Range Enumeration */
+#define RVU_MBOX_AF_PFX_ADDR(a)             (0x5000 | (a) << 4)
+#define RVU_PFX_FUNC_PFAF_MBOX		    (0x80000)
+#define RVU_PFX_FUNCX_VFAF_MBOX		    (0x40000)
+
+#define RVU_FUNC_BLKADDR_SHIFT		20
+#define RVU_FUNC_BLKADDR_MASK		0x1FULL
+
+/* NPA LF registers */
+#define NPA_LFBASE			(BLKTYPE_NPA << RVU_FUNC_BLKADDR_SHIFT)
+#define NPA_LF_AURA_OP_ALLOCX(a)	(NPA_LFBASE | 0x10 | (a) << 3)
+#define NPA_LF_AURA_OP_FREE0            (NPA_LFBASE | 0x20)
+#define NPA_LF_AURA_OP_FREE1            (NPA_LFBASE | 0x28)
+#define NPA_LF_AURA_OP_CNT              (NPA_LFBASE | 0x30)
+#define NPA_LF_AURA_OP_LIMIT            (NPA_LFBASE | 0x50)
+#define NPA_LF_AURA_OP_INT              (NPA_LFBASE | 0x60)
+#define NPA_LF_AURA_OP_THRESH           (NPA_LFBASE | 0x70)
+#define NPA_LF_POOL_OP_PC               (NPA_LFBASE | 0x100)
+#define NPA_LF_POOL_OP_AVAILABLE        (NPA_LFBASE | 0x110)
+#define NPA_LF_POOL_OP_PTR_START0       (NPA_LFBASE | 0x120)
+#define NPA_LF_POOL_OP_PTR_START1       (NPA_LFBASE | 0x128)
+#define NPA_LF_POOL_OP_PTR_END0         (NPA_LFBASE | 0x130)
+#define NPA_LF_POOL_OP_PTR_END1         (NPA_LFBASE | 0x138)
+#define NPA_LF_POOL_OP_INT              (NPA_LFBASE | 0x160)
+#define NPA_LF_POOL_OP_THRESH           (NPA_LFBASE | 0x170)
+#define NPA_LF_ERR_INT                  (NPA_LFBASE | 0x200)
+#define NPA_LF_ERR_INT_W1S              (NPA_LFBASE | 0x208)
+#define NPA_LF_ERR_INT_ENA_W1C          (NPA_LFBASE | 0x210)
+#define NPA_LF_ERR_INT_ENA_W1S          (NPA_LFBASE | 0x218)
+#define NPA_LF_RAS                      (NPA_LFBASE | 0x220)
+#define NPA_LF_RAS_W1S                  (NPA_LFBASE | 0x228)
+#define NPA_LF_RAS_ENA_W1C              (NPA_LFBASE | 0x230)
+#define NPA_LF_RAS_ENA_W1S              (NPA_LFBASE | 0x238)
+#define NPA_LF_QINTX_CNT(a)             (NPA_LFBASE | 0x300 | (a) << 12)
+#define NPA_LF_QINTX_INT(a)             (NPA_LFBASE | 0x310 | (a) << 12)
+#define NPA_LF_QINTX_INT_W1S(a)         (NPA_LFBASE | 0x318 | (a) << 12)
+#define NPA_LF_QINTX_ENA_W1S(a)         (NPA_LFBASE | 0x320 | (a) << 12)
+#define NPA_LF_QINTX_ENA_W1C(a)         (NPA_LFBASE | 0x330 | (a) << 12)
+#define NPA_LF_AURA_BATCH_FREE0         (NPA_LFBASE | 0x400)
+
+/* NIX LF registers */
+#define	NIX_LFBASE			(BLKTYPE_NIX << RVU_FUNC_BLKADDR_SHIFT)
+#define	NIX_LF_RX_SECRETX(a)		(NIX_LFBASE | 0x0 | (a) << 3)
+#define	NIX_LF_CFG			(NIX_LFBASE | 0x100)
+#define	NIX_LF_GINT			(NIX_LFBASE | 0x200)
+#define	NIX_LF_GINT_W1S			(NIX_LFBASE | 0x208)
+#define	NIX_LF_GINT_ENA_W1C		(NIX_LFBASE | 0x210)
+#define	NIX_LF_GINT_ENA_W1S		(NIX_LFBASE | 0x218)
+#define	NIX_LF_ERR_INT			(NIX_LFBASE | 0x220)
+#define	NIX_LF_ERR_INT_W1S		(NIX_LFBASE | 0x228)
+#define	NIX_LF_ERR_INT_ENA_W1C		(NIX_LFBASE | 0x230)
+#define	NIX_LF_ERR_INT_ENA_W1S		(NIX_LFBASE | 0x238)
+#define	NIX_LF_RAS			(NIX_LFBASE | 0x240)
+#define	NIX_LF_RAS_W1S			(NIX_LFBASE | 0x248)
+#define	NIX_LF_RAS_ENA_W1C		(NIX_LFBASE | 0x250)
+#define	NIX_LF_RAS_ENA_W1S		(NIX_LFBASE | 0x258)
+#define	NIX_LF_SQ_OP_ERR_DBG		(NIX_LFBASE | 0x260)
+#define	NIX_LF_MNQ_ERR_DBG		(NIX_LFBASE | 0x270)
+#define	NIX_LF_SEND_ERR_DBG		(NIX_LFBASE | 0x280)
+#define	NIX_LF_TX_STATX(a)		(NIX_LFBASE | 0x300 | (a) << 3)
+#define	NIX_LF_RX_STATX(a)		(NIX_LFBASE | 0x400 | (a) << 3)
+#define	NIX_LF_OP_SENDX(a)		(NIX_LFBASE | 0x800 | (a) << 3)
+#define	NIX_LF_RQ_OP_INT		(NIX_LFBASE | 0x900)
+#define	NIX_LF_RQ_OP_OCTS		(NIX_LFBASE | 0x910)
+#define	NIX_LF_RQ_OP_PKTS		(NIX_LFBASE | 0x920)
+#define	NIX_LF_OP_IPSEC_DYNO_CN		(NIX_LFBASE | 0x980)
+#define	NIX_LF_SQ_OP_INT		(NIX_LFBASE | 0xa00)
+#define	NIX_LF_SQ_OP_OCTS		(NIX_LFBASE | 0xa10)
+#define	NIX_LF_SQ_OP_PKTS		(NIX_LFBASE | 0xa20)
+#define	NIX_LF_SQ_OP_STATUS		(NIX_LFBASE | 0xa30)
+#define	NIX_LF_CQ_OP_INT		(NIX_LFBASE | 0xb00)
+#define	NIX_LF_CQ_OP_DOOR		(NIX_LFBASE | 0xb30)
+#define	NIX_LF_CQ_OP_STATUS		(NIX_LFBASE | 0xb40)
+#define	NIX_LF_QINTX_CNT(a)		(NIX_LFBASE | 0xC00 | (a) << 12)
+#define	NIX_LF_QINTX_INT(a)		(NIX_LFBASE | 0xC10 | (a) << 12)
+#define	NIX_LF_QINTX_INT_W1S(a)		(NIX_LFBASE | 0xC18 | (a) << 12)
+#define	NIX_LF_QINTX_ENA_W1S(a)		(NIX_LFBASE | 0xC20 | (a) << 12)
+#define	NIX_LF_QINTX_ENA_W1C(a)		(NIX_LFBASE | 0xC30 | (a) << 12)
+#define	NIX_LF_CINTX_CNT(a)		(NIX_LFBASE | 0xD00 | (a) << 12)
+#define	NIX_LF_CINTX_WAIT(a)		(NIX_LFBASE | 0xD10 | (a) << 12)
+#define	NIX_LF_CINTX_INT(a)		(NIX_LFBASE | 0xD20 | (a) << 12)
+#define	NIX_LF_CINTX_INT_W1S(a)		(NIX_LFBASE | 0xD30 | (a) << 12)
+#define	NIX_LF_CINTX_ENA_W1S(a)		(NIX_LFBASE | 0xD40 | (a) << 12)
+#define	NIX_LF_CINTX_ENA_W1C(a)		(NIX_LFBASE | 0xD50 | (a) << 12)
+
+/* LMT LF registers */
+#define LMT_LFBASE			BIT_ULL(RVU_FUNC_BLKADDR_SHIFT)
+#define LMT_LF_LMTLINEX(a)		(LMT_LFBASE | 0x000 | (a) << 12)
+#define LMT_LF_LMTCANCEL		(LMT_LFBASE | 0x400)
+
+/* CN20K registers */
+#define RVU_PF_DISC			(0x0)
+
+#endif /* OTX2_REG_H */

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_struct.h

@@ -0,0 +1,341 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef OTX2_STRUCT_H
+#define OTX2_STRUCT_H
+
+/* NIX WQE/CQE size 128 byte or 512 byte */
+enum nix_cqesz_e {
+	NIX_XQESZ_W64 = 0x0,
+	NIX_XQESZ_W16 = 0x1,
+};
+
+enum nix_sqes_e {
+	NIX_SQESZ_W16 = 0x0,
+	NIX_SQESZ_W8 = 0x1,
+};
+
+enum nix_send_ldtype {
+	NIX_SEND_LDTYPE_LDD  = 0x0,
+	NIX_SEND_LDTYPE_LDT  = 0x1,
+	NIX_SEND_LDTYPE_LDWB = 0x2,
+};
+
+/* CSUM offload */
+enum nix_sendl3type {
+	NIX_SENDL3TYPE_NONE = 0x0,
+	NIX_SENDL3TYPE_IP4 = 0x2,
+	NIX_SENDL3TYPE_IP4_CKSUM = 0x3,
+	NIX_SENDL3TYPE_IP6 = 0x4,
+};
+
+enum nix_sendl4type {
+	NIX_SENDL4TYPE_NONE,
+	NIX_SENDL4TYPE_TCP_CKSUM,
+	NIX_SENDL4TYPE_SCTP_CKSUM,
+	NIX_SENDL4TYPE_UDP_CKSUM,
+};
+
+/* NIX wqe/cqe types */
+enum nix_xqe_type {
+	NIX_XQE_TYPE_INVALID   = 0x0,
+	NIX_XQE_TYPE_RX        = 0x1,
+	NIX_XQE_TYPE_RX_IPSECS = 0x2,
+	NIX_XQE_TYPE_RX_IPSECH = 0x3,
+	NIX_XQE_TYPE_RX_IPSECD = 0x4,
+	NIX_XQE_TYPE_SEND      = 0x8,
+};
+
+/* NIX CQE/SQE subdescriptor types */
+enum nix_subdc {
+	NIX_SUBDC_NOP  = 0x0,
+	NIX_SUBDC_EXT  = 0x1,
+	NIX_SUBDC_CRC  = 0x2,
+	NIX_SUBDC_IMM  = 0x3,
+	NIX_SUBDC_SG   = 0x4,
+	NIX_SUBDC_MEM  = 0x5,
+	NIX_SUBDC_JUMP = 0x6,
+	NIX_SUBDC_WORK = 0x7,
+	NIX_SUBDC_SOD  = 0xf,
+};
+
+/* Algorithm for nix_sqe_mem_s header (value of the `alg` field) */
+enum nix_sendmemalg {
+	NIX_SENDMEMALG_E_SET       = 0x0,
+	NIX_SENDMEMALG_E_SETTSTMP  = 0x1,
+	NIX_SENDMEMALG_E_SETRSLT   = 0x2,
+	NIX_SENDMEMALG_E_ADD       = 0x8,
+	NIX_SENDMEMALG_E_SUB       = 0x9,
+	NIX_SENDMEMALG_E_ADDLEN    = 0xa,
+	NIX_SENDMEMALG_E_SUBLEN    = 0xb,
+	NIX_SENDMEMALG_E_ADDMBUF   = 0xc,
+	NIX_SENDMEMALG_E_SUBMBUF   = 0xd,
+	NIX_SENDMEMALG_E_ENUM_LAST = 0xe,
+};
+
+/* NIX CQE header structure */
+struct nix_cqe_hdr_s {
+	u64 flow_tag              : 32;
+	u64 q                     : 20;
+	u64 reserved_52_57        : 6;
+	u64 node                  : 2;
+	u64 cqe_type              : 4;
+};
+
+/* NIX CQE RX parse structure */
+struct nix_rx_parse_s {
+	u64 chan         : 12;
+	u64 desc_sizem1  : 5;
+	u64 rsvd_17      : 1;
+	u64 express      : 1;
+	u64 wqwd         : 1;
+	u64 errlev       : 4;
+	u64 errcode      : 8;
+	u64 latype       : 4;
+	u64 lbtype       : 4;
+	u64 lctype       : 4;
+	u64 ldtype       : 4;
+	u64 letype       : 4;
+	u64 lftype       : 4;
+	u64 lgtype       : 4;
+	u64 lhtype       : 4;
+	u64 pkt_lenm1    : 16; /* W1 */
+	u64 l2m          : 1;
+	u64 l2b          : 1;
+	u64 l3m          : 1;
+	u64 l3b          : 1;
+	u64 vtag0_valid  : 1;
+	u64 vtag0_gone   : 1;
+	u64 vtag1_valid  : 1;
+	u64 vtag1_gone   : 1;
+	u64 pkind        : 6;
+	u64 rsvd_95_94   : 2;
+	u64 vtag0_tci    : 16;
+	u64 vtag1_tci    : 16;
+	u64 laflags      : 8; /* W2 */
+	u64 lbflags      : 8;
+	u64 lcflags      : 8;
+	u64 ldflags      : 8;
+	u64 leflags      : 8;
+	u64 lfflags      : 8;
+	u64 lgflags      : 8;
+	u64 lhflags      : 8;
+	u64 eoh_ptr      : 8; /* W3 */
+	u64 wqe_aura     : 20;
+	u64 pb_aura      : 20;
+	u64 match_id     : 16;
+	u64 laptr        : 8; /* W4 */
+	u64 lbptr        : 8;
+	u64 lcptr        : 8;
+	u64 ldptr        : 8;
+	u64 leptr        : 8;
+	u64 lfptr        : 8;
+	u64 lgptr        : 8;
+	u64 lhptr        : 8;
+	u64 vtag0_ptr    : 8; /* W5 */
+	u64 vtag1_ptr    : 8;
+	u64 flow_key_alg : 5;
+	u64 rsvd_359_341 : 19;
+	u64 color	 : 2;
+	u64 rsvd_383_362 : 22;
+	u64 rsvd_447_384;     /* W6 */
+};
+
+/* NIX CQE RX scatter/gather subdescriptor structure */
+struct nix_rx_sg_s {
+	u64 seg_size   : 16; /* W0 */
+	u64 seg2_size  : 16;
+	u64 seg3_size  : 16;
+	u64 segs       : 2;
+	u64 rsvd_59_50 : 10;
+	u64 subdc      : 4;
+	u64 seg_addr;
+	u64 seg2_addr;
+	u64 seg3_addr;
+};
+
+struct nix_send_comp_s {
+	u64 status	: 8;
+	u64 sqe_id	: 16;
+	u64 rsvd_24_63	: 40;
+};
+
+struct nix_cqe_rx_s {
+	struct nix_cqe_hdr_s  hdr;
+	struct nix_rx_parse_s parse;
+	struct nix_rx_sg_s sg;
+};
+
+struct nix_cqe_tx_s {
+	struct nix_cqe_hdr_s  hdr;
+	struct nix_send_comp_s comp;
+};
+
+/* NIX SQE header structure */
+struct nix_sqe_hdr_s {
+	u64 total		: 18; /* W0 */
+	u64 reserved_18		: 1;
+	u64 df			: 1;
+	u64 aura		: 20;
+	u64 sizem1		: 3;
+	u64 pnc			: 1;
+	u64 sq			: 20;
+	u64 ol3ptr		: 8; /* W1 */
+	u64 ol4ptr		: 8;
+	u64 il3ptr		: 8;
+	u64 il4ptr		: 8;
+	u64 ol3type		: 4;
+	u64 ol4type		: 4;
+	u64 il3type		: 4;
+	u64 il4type		: 4;
+	u64 sqe_id		: 16;
+
+};
+
+/* NIX send extended header subdescriptor structure */
+struct nix_sqe_ext_s {
+	u64 lso_mps       : 14; /* W0 */
+	u64 lso           : 1;
+	u64 tstmp         : 1;
+	u64 lso_sb        : 8;
+	u64 lso_format    : 5;
+	u64 rsvd_31_29    : 3;
+	u64 shp_chg       : 9;
+	u64 shp_dis       : 1;
+	u64 shp_ra        : 2;
+	u64 markptr       : 8;
+	u64 markform      : 7;
+	u64 mark_en       : 1;
+	u64 subdc         : 4;
+	u64 vlan0_ins_ptr : 8; /* W1 */
+	u64 vlan0_ins_tci : 16;
+	u64 vlan1_ins_ptr : 8;
+	u64 vlan1_ins_tci : 16;
+	u64 vlan0_ins_ena : 1;
+	u64 vlan1_ins_ena : 1;
+	u64 init_color    : 2;
+	u64 rsvd_127_116  : 12;
+};
+
+struct nix_sqe_sg_s {
+	u64 seg1_size	: 16;
+	u64 seg2_size	: 16;
+	u64 seg3_size	: 16;
+	u64 segs	: 2;
+	u64 rsvd_54_50	: 5;
+	u64 i1		: 1;
+	u64 i2		: 1;
+	u64 i3		: 1;
+	u64 ld_type	: 2;
+	u64 subdc	: 4;
+};
+
+/* NIX send memory subdescriptor structure */
+struct nix_sqe_mem_s {
+	u64 start_offset  : 8;
+	u64 rsvd_11_8	  : 4;
+	u64 rsvd_12	  : 1;
+	u64 udp_csum_crt  : 1;
+	u64 update64      : 1;
+	u64 rsvd_15_16    : 1;
+	u64 base_ns       : 32;
+	u64 step_type     : 1;
+	u64 rsvd_51_49    : 3;
+	u64 per_lso_seg   : 1;
+	u64 wmem          : 1;
+	u64 dsz           : 2;
+	u64 alg           : 4;
+	u64 subdc         : 4;
+	u64 addr; /* W1 */
+};
+
+enum nix_cqerrint_e {
+	NIX_CQERRINT_DOOR_ERR = 0,
+	NIX_CQERRINT_WR_FULL = 1,
+	NIX_CQERRINT_CQE_FAULT = 2,
+};
+
+#define NIX_CQERRINT_BITS (BIT_ULL(NIX_CQERRINT_DOOR_ERR) | \
+			   BIT_ULL(NIX_CQERRINT_CQE_FAULT))
+
+enum nix_rqint_e {
+	NIX_RQINT_DROP = 0,
+	NIX_RQINT_RED = 1,
+};
+
+#define NIX_RQINT_BITS (BIT_ULL(NIX_RQINT_DROP) | BIT_ULL(NIX_RQINT_RED))
+
+enum nix_sqint_e {
+	NIX_SQINT_LMT_ERR = 0,
+	NIX_SQINT_MNQ_ERR = 1,
+	NIX_SQINT_SEND_ERR = 2,
+	NIX_SQINT_SQB_ALLOC_FAIL = 3,
+};
+
+#define NIX_SQINT_BITS (BIT_ULL(NIX_SQINT_LMT_ERR) | \
+			BIT_ULL(NIX_SQINT_MNQ_ERR) | \
+			BIT_ULL(NIX_SQINT_SEND_ERR) | \
+			BIT_ULL(NIX_SQINT_SQB_ALLOC_FAIL))
+
+enum nix_sqoperr_e {
+	NIX_SQOPERR_OOR = 0,
+	NIX_SQOPERR_CTX_FAULT = 1,
+	NIX_SQOPERR_CTX_POISON = 2,
+	NIX_SQOPERR_DISABLED = 3,
+	NIX_SQOPERR_SIZE_ERR = 4,
+	NIX_SQOPERR_OFLOW = 5,
+	NIX_SQOPERR_SQB_NULL = 6,
+	NIX_SQOPERR_SQB_FAULT = 7,
+	NIX_SQOPERR_SQE_SZ_ZERO = 8,
+	NIX_SQOPERR_MAX,
+};
+
+enum nix_mnqerr_e {
+	NIX_MNQERR_SQ_CTX_FAULT = 0,
+	NIX_MNQERR_SQ_CTX_POISON = 1,
+	NIX_MNQERR_SQB_FAULT = 2,
+	NIX_MNQERR_SQB_POISON = 3,
+	NIX_MNQERR_TOTAL_ERR = 4,
+	NIX_MNQERR_LSO_ERR = 5,
+	NIX_MNQERR_CQ_QUERY_ERR = 6,
+	NIX_MNQERR_MAX_SQE_SIZE_ERR = 7,
+	NIX_MNQERR_MAXLEN_ERR = 8,
+	NIX_MNQERR_SQE_SIZEM1_ZERO = 9,
+	NIX_MNQERR_MAX,
+};
+
+enum nix_snd_status_e {
+	NIX_SND_STATUS_GOOD = 0x0,
+	NIX_SND_STATUS_SQ_CTX_FAULT = 0x1,
+	NIX_SND_STATUS_SQ_CTX_POISON = 0x2,
+	NIX_SND_STATUS_SQB_FAULT = 0x3,
+	NIX_SND_STATUS_SQB_POISON = 0x4,
+	NIX_SND_STATUS_HDR_ERR = 0x5,
+	NIX_SND_STATUS_EXT_ERR = 0x6,
+	NIX_SND_STATUS_JUMP_FAULT = 0x7,
+	NIX_SND_STATUS_JUMP_POISON = 0x8,
+	NIX_SND_STATUS_CRC_ERR = 0x10,
+	NIX_SND_STATUS_IMM_ERR = 0x11,
+	NIX_SND_STATUS_SG_ERR = 0x12,
+	NIX_SND_STATUS_MEM_ERR = 0x13,
+	NIX_SND_STATUS_INVALID_SUBDC = 0x14,
+	NIX_SND_STATUS_SUBDC_ORDER_ERR = 0x15,
+	NIX_SND_STATUS_DATA_FAULT = 0x16,
+	NIX_SND_STATUS_DATA_POISON = 0x17,
+	NIX_SND_STATUS_NPC_DROP_ACTION = 0x20,
+	NIX_SND_STATUS_LOCK_VIOL = 0x21,
+	NIX_SND_STATUS_NPC_UCAST_CHAN_ERR = 0x22,
+	NIX_SND_STATUS_NPC_MCAST_CHAN_ERR = 0x23,
+	NIX_SND_STATUS_NPC_MCAST_ABORT = 0x24,
+	NIX_SND_STATUS_NPC_VTAG_PTR_ERR = 0x25,
+	NIX_SND_STATUS_NPC_VTAG_SIZE_ERR = 0x26,
+	NIX_SND_STATUS_SEND_MEM_FAULT = 0x27,
+	NIX_SND_STATUS_SEND_STATS_ERR = 0x28,
+	NIX_SND_STATUS_MAX,
+};
+
+#endif /* OTX2_STRUCT_H */

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h

@@ -0,0 +1,191 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef OTX2_TXRX_H
+#define OTX2_TXRX_H
+
+#include <linux/etherdevice.h>
+#include <linux/iommu.h>
+#include <linux/if_vlan.h>
+#include <net/xdp.h>
+#include <net/xdp_sock_drv.h>
+
+#define LBK_CHAN_BASE	0x000
+#define SDP_CHAN_BASE	0x700
+#define CGX_CHAN_BASE	0x800
+
+#define OTX2_DATA_ALIGN(X)	ALIGN(X, OTX2_ALIGN)
+#define OTX2_HEAD_ROOM		OTX2_ALIGN
+
+#define	OTX2_ETH_HLEN		(VLAN_ETH_HLEN + VLAN_HLEN)
+#define	OTX2_MIN_MTU		60
+
+#define OTX2_PAGE_POOL_SZ	2048
+
+#define OTX2_MAX_GSO_SEGS	255
+#define OTX2_MAX_FRAGS_IN_SQE	9
+
+#define MAX_XDP_MTU	(1530 - OTX2_ETH_HLEN)
+
+/* Rx buffer size should be in multiples of 128bytes */
+#define RCV_FRAG_LEN1(x)				\
+		((OTX2_HEAD_ROOM + OTX2_DATA_ALIGN(x)) + \
+		OTX2_DATA_ALIGN(sizeof(struct skb_shared_info)))
+
+/* Prefer 2048 byte buffers for better last level cache
+ * utilization or data distribution across regions.
+ */
+#define RCV_FRAG_LEN(x)	\
+		((RCV_FRAG_LEN1(x) < 2048) ? 2048 : RCV_FRAG_LEN1(x))
+
+#define DMA_BUFFER_LEN(x)	((x) - OTX2_HEAD_ROOM)
+
+/* IRQ triggered when NIX_LF_CINTX_CNT[ECOUNT]
+ * is equal to this value.
+ */
+#define CQ_CQE_THRESH_DEFAULT	10
+
+/* IRQ triggered when NIX_LF_CINTX_CNT[ECOUNT]
+ * is nonzero and this much time elapses after that.
+ */
+#define CQ_TIMER_THRESH_DEFAULT	1  /* 1 usec */
+#define CQ_TIMER_THRESH_MAX     25 /* 25 usec */
+
+/* Min number of CQs (of the ones mapped to this CINT)
+ * with valid CQEs.
+ */
+#define CQ_QCOUNT_DEFAULT	1
+
+#define CQ_OP_STAT_OP_ERR       63
+#define CQ_OP_STAT_CQ_ERR       46
+
+/* Packet mark mask */
+#define OTX2_RX_MATCH_ID_MASK 0x0000ffff
+
+struct queue_stats {
+	u64	bytes;
+	u64	pkts;
+};
+
+struct otx2_rcv_queue {
+	struct queue_stats	stats;
+};
+
+struct sg_list {
+	u16	num_segs;
+	u16	flags;
+	u64	skb;
+	u64	size[OTX2_MAX_FRAGS_IN_SQE];
+	u64	dma_addr[OTX2_MAX_FRAGS_IN_SQE];
+};
+
+struct otx2_snd_queue {
+	u8			aura_id;
+	u16			head;
+	u16			cons_head;
+	u16			sqe_size;
+	u32			sqe_cnt;
+	u16			num_sqbs;
+	u16			sqe_thresh;
+	u8			sqe_per_sqb;
+	u64			 io_addr;
+	u64			*aura_fc_addr;
+	u64			*lmt_addr;
+	void			*sqe_base;
+	struct qmem		*sqe;
+	struct qmem		*tso_hdrs;
+	struct sg_list		*sg;
+	struct qmem		*timestamps;
+	struct queue_stats	stats;
+	u16			sqb_count;
+	u64			*sqb_ptrs;
+	/* SQE ring and CPT response queue for Inline IPSEC */
+	struct qmem		*sqe_ring;
+	struct qmem		*cpt_resp;
+	/* Buffer pool for af_xdp zero-copy */
+	struct xsk_buff_pool    *xsk_pool;
+} ____cacheline_aligned_in_smp;
+
+enum cq_type {
+	CQ_RX,
+	CQ_TX,
+	CQ_XDP,
+	CQ_QOS,
+	CQS_PER_CINT = 4, /* RQ + SQ + XDP + QOS_SQ */
+};
+
+struct otx2_cq_poll {
+	void			*dev;
+#define CINT_INVALID_CQ		255
+	u8			cint_idx;
+	u8			cq_ids[CQS_PER_CINT];
+	struct dim		dim;
+	struct napi_struct	napi;
+};
+
+struct otx2_pool {
+	struct qmem		*stack;
+	struct qmem		*fc_addr;
+	struct page_pool	*page_pool;
+	struct xsk_buff_pool	*xsk_pool;
+	struct xdp_buff		**xdp;
+	u16			xdp_cnt;
+	u16			rbsize;
+	u16			xdp_top;
+};
+
+struct otx2_cq_queue {
+	u8			cq_idx;
+	u8			cq_type;
+	u8			cint_idx; /* CQ interrupt id */
+	u8			refill_task_sched;
+	u16			cqe_size;
+	u16			pool_ptrs;
+	u32			cqe_cnt;
+	u32			cq_head;
+	u32			cq_tail;
+	u32			pend_cqe;
+	void			*cqe_base;
+	struct qmem		*cqe;
+	struct otx2_pool	*rbpool;
+	bool			xsk_zc_en;
+	struct xdp_rxq_info xdp_rxq;
+} ____cacheline_aligned_in_smp;
+
+struct otx2_qset {
+	u32			rqe_cnt;
+	u32			sqe_cnt; /* Keep these two at top */
+#define OTX2_MAX_CQ_CNT		64
+	u16			cq_cnt;
+	u16			xqe_size;
+	struct otx2_pool	*pool;
+	struct otx2_cq_poll	*napi;
+	struct otx2_cq_queue	*cq;
+	struct otx2_snd_queue	*sq;
+	struct otx2_rcv_queue	*rq;
+};
+
+/* Translate IOVA to physical address */
+static inline u64 otx2_iova_to_phys(void *iommu_domain, dma_addr_t dma_addr)
+{
+	/* Translation is installed only when IOMMU is present */
+	if (likely(iommu_domain))
+		return iommu_iova_to_phys(iommu_domain, dma_addr);
+	return dma_addr;
+}
+
+int otx2_napi_handler(struct napi_struct *napi, int budget);
+bool otx2_sq_append_skb(void *dev, struct netdev_queue *txq,
+			struct otx2_snd_queue *sq,
+			struct sk_buff *skb, u16 qidx);
+void cn10k_sqe_flush(void *dev, struct otx2_snd_queue *sq,
+		     int size, int qidx);
+void otx2_sqe_flush(void *dev, struct otx2_snd_queue *sq,
+		    int size, int qidx);
+int otx2_refill_pool_ptrs(void *dev, struct otx2_cq_queue *cq);
+int cn10k_refill_pool_ptrs(void *dev, struct otx2_cq_queue *cq);
+#endif /* OTX2_TXRX_H */

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c

@@ -0,0 +1,882 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Virtual Function ethernet driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/net_tstamp.h>
+
+#include "otx2_common.h"
+#include "otx2_reg.h"
+#include "otx2_ptp.h"
+#include "cn10k.h"
+#include "cn10k_ipsec.h"
+
+#define DRV_NAME	"rvu_nicvf"
+#define DRV_STRING	"Marvell RVU NIC Virtual Function Driver"
+
+static const struct pci_device_id otx2_vf_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_AFVF) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_VF) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_SDP_REP) },
+	{ }
+};
+
+MODULE_AUTHOR("Sunil Goutham <sgoutham@marvell.com>");
+MODULE_DESCRIPTION(DRV_STRING);
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(pci, otx2_vf_id_table);
+
+/* RVU VF Interrupt Vector Enumeration */
+enum {
+	RVU_VF_INT_VEC_MBOX = 0x0,
+};
+
+static void otx2vf_process_vfaf_mbox_msg(struct otx2_nic *vf,
+					 struct mbox_msghdr *msg)
+{
+	if (msg->id >= MBOX_MSG_MAX) {
+		dev_err(vf->dev,
+			"Mbox msg with unknown ID %d\n", msg->id);
+		return;
+	}
+
+	if (msg->sig != OTX2_MBOX_RSP_SIG) {
+		dev_err(vf->dev,
+			"Mbox msg with wrong signature %x, ID %d\n",
+			msg->sig, msg->id);
+		return;
+	}
+
+	if (msg->rc == MBOX_MSG_INVALID) {
+		dev_err(vf->dev,
+			"PF/AF says the sent msg(s) %d were invalid\n",
+			msg->id);
+		return;
+	}
+
+	switch (msg->id) {
+	case MBOX_MSG_READY:
+		vf->pcifunc = msg->pcifunc;
+		break;
+	case MBOX_MSG_MSIX_OFFSET:
+		mbox_handler_msix_offset(vf, (struct msix_offset_rsp *)msg);
+		break;
+	case MBOX_MSG_NPA_LF_ALLOC:
+		mbox_handler_npa_lf_alloc(vf, (struct npa_lf_alloc_rsp *)msg);
+		break;
+	case MBOX_MSG_NIX_LF_ALLOC:
+		mbox_handler_nix_lf_alloc(vf, (struct nix_lf_alloc_rsp *)msg);
+		break;
+	case MBOX_MSG_NIX_BP_ENABLE:
+		mbox_handler_nix_bp_enable(vf, (struct nix_bp_cfg_rsp *)msg);
+		break;
+	default:
+		if (msg->rc)
+			dev_err(vf->dev,
+				"Mbox msg response has err %d, ID %d\n",
+				msg->rc, msg->id);
+	}
+}
+
+static void otx2vf_vfaf_mbox_handler(struct work_struct *work)
+{
+	struct otx2_mbox_dev *mdev;
+	struct mbox_hdr *rsp_hdr;
+	struct mbox_msghdr *msg;
+	struct otx2_mbox *mbox;
+	struct mbox *af_mbox;
+	int offset, id;
+	u16 num_msgs;
+
+	af_mbox = container_of(work, struct mbox, mbox_wrk);
+	mbox = &af_mbox->mbox;
+	mdev = &mbox->dev[0];
+	rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+	num_msgs = rsp_hdr->num_msgs;
+
+	if (num_msgs == 0)
+		return;
+
+	offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
+
+	for (id = 0; id < num_msgs; id++) {
+		msg = (struct mbox_msghdr *)(mdev->mbase + offset);
+		otx2vf_process_vfaf_mbox_msg(af_mbox->pfvf, msg);
+		offset = mbox->rx_start + msg->next_msgoff;
+		if (mdev->msgs_acked == (af_mbox->num_msgs - 1))
+			__otx2_mbox_reset(mbox, 0);
+		mdev->msgs_acked++;
+	}
+}
+
+static int otx2vf_process_mbox_msg_up(struct otx2_nic *vf,
+				      struct mbox_msghdr *req)
+{
+	struct msg_rsp *rsp;
+	int err;
+
+	/* Check if valid, if not reply with a invalid msg */
+	if (req->sig != OTX2_MBOX_REQ_SIG) {
+		otx2_reply_invalid_msg(&vf->mbox.mbox_up, 0, 0, req->id);
+		return -ENODEV;
+	}
+
+	switch (req->id) {
+	case MBOX_MSG_CGX_LINK_EVENT:
+		rsp = (struct msg_rsp *)otx2_mbox_alloc_msg(
+						&vf->mbox.mbox_up, 0,
+						sizeof(struct msg_rsp));
+		if (!rsp)
+			return -ENOMEM;
+
+		rsp->hdr.id = MBOX_MSG_CGX_LINK_EVENT;
+		rsp->hdr.sig = OTX2_MBOX_RSP_SIG;
+		rsp->hdr.pcifunc = req->pcifunc;
+		rsp->hdr.rc = 0;
+		err = otx2_mbox_up_handler_cgx_link_event(
+				vf, (struct cgx_link_info_msg *)req, rsp);
+		return err;
+	default:
+		otx2_reply_invalid_msg(&vf->mbox.mbox_up, 0, 0, req->id);
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static void otx2vf_vfaf_mbox_up_handler(struct work_struct *work)
+{
+	struct otx2_mbox_dev *mdev;
+	struct mbox_hdr *rsp_hdr;
+	struct mbox_msghdr *msg;
+	struct otx2_mbox *mbox;
+	struct mbox *vf_mbox;
+	struct otx2_nic *vf;
+	int offset, id;
+	u16 num_msgs;
+
+	vf_mbox = container_of(work, struct mbox, mbox_up_wrk);
+	vf = vf_mbox->pfvf;
+	mbox = &vf_mbox->mbox_up;
+	mdev = &mbox->dev[0];
+
+	rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+	num_msgs = rsp_hdr->num_msgs;
+
+	if (num_msgs == 0)
+		return;
+
+	offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
+
+	for (id = 0; id < num_msgs; id++) {
+		msg = (struct mbox_msghdr *)(mdev->mbase + offset);
+		otx2vf_process_mbox_msg_up(vf, msg);
+		offset = mbox->rx_start + msg->next_msgoff;
+	}
+
+	otx2_mbox_msg_send(mbox, 0);
+}
+
+static irqreturn_t otx2vf_vfaf_mbox_intr_handler(int irq, void *vf_irq)
+{
+	struct otx2_nic *vf = (struct otx2_nic *)vf_irq;
+	struct otx2_mbox_dev *mdev;
+	struct otx2_mbox *mbox;
+	struct mbox_hdr *hdr;
+	u64 mbox_data;
+
+	/* Clear the IRQ */
+	otx2_write64(vf, RVU_VF_INT, BIT_ULL(0));
+
+	mbox_data = otx2_read64(vf, RVU_VF_VFPF_MBOX0);
+
+	/* Read latest mbox data */
+	smp_rmb();
+
+	if (mbox_data & MBOX_DOWN_MSG) {
+		mbox_data &= ~MBOX_DOWN_MSG;
+		otx2_write64(vf, RVU_VF_VFPF_MBOX0, mbox_data);
+
+		/* Check for PF => VF response messages */
+		mbox = &vf->mbox.mbox;
+		mdev = &mbox->dev[0];
+		otx2_sync_mbox_bbuf(mbox, 0);
+
+		hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+		if (hdr->num_msgs)
+			queue_work(vf->mbox_wq, &vf->mbox.mbox_wrk);
+
+		trace_otx2_msg_interrupt(mbox->pdev, "DOWN reply from PF to VF",
+					 BIT_ULL(0));
+	}
+
+	if (mbox_data & MBOX_UP_MSG) {
+		mbox_data &= ~MBOX_UP_MSG;
+		otx2_write64(vf, RVU_VF_VFPF_MBOX0, mbox_data);
+
+		/* Check for PF => VF notification messages */
+		mbox = &vf->mbox.mbox_up;
+		mdev = &mbox->dev[0];
+		otx2_sync_mbox_bbuf(mbox, 0);
+
+		hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
+		if (hdr->num_msgs)
+			queue_work(vf->mbox_wq, &vf->mbox.mbox_up_wrk);
+
+		trace_otx2_msg_interrupt(mbox->pdev, "UP message from PF to VF",
+					 BIT_ULL(0));
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void otx2vf_disable_mbox_intr(struct otx2_nic *vf)
+{
+	int vector = pci_irq_vector(vf->pdev, RVU_VF_INT_VEC_MBOX);
+
+	/* Disable VF => PF mailbox IRQ */
+	otx2_write64(vf, RVU_VF_INT_ENA_W1C, BIT_ULL(0));
+
+	if (is_cn20k(vf->pdev))
+		otx2_write64(vf, RVU_VF_INT_ENA_W1C, BIT_ULL(0) | BIT_ULL(1));
+
+	free_irq(vector, vf);
+}
+
+static int otx2vf_register_mbox_intr(struct otx2_nic *vf, bool probe_pf)
+{
+	struct otx2_hw *hw = &vf->hw;
+	struct msg_req *req;
+	u64 mbox_int_mask;
+	char *irq_name;
+	int err;
+
+	mbox_int_mask = !is_cn20k(vf->pdev) ? BIT_ULL(0) :
+				BIT_ULL(0) | BIT_ULL(1) |
+				BIT_ULL(2) | BIT_ULL(3);
+
+	/* Clear stale mailbox interrupt state before installing the handler. */
+	otx2_write64(vf, RVU_VF_INT, mbox_int_mask);
+
+	/* Register mailbox interrupt handler */
+	irq_name = &hw->irq_name[RVU_VF_INT_VEC_MBOX * NAME_SIZE];
+	snprintf(irq_name, NAME_SIZE, "RVUVF%d AFVF Mbox", ((vf->pcifunc &
+		 RVU_PFVF_FUNC_MASK) - 1));
+
+	if (!is_cn20k(vf->pdev)) {
+		err = request_irq(pci_irq_vector(vf->pdev, RVU_VF_INT_VEC_MBOX),
+				  otx2vf_vfaf_mbox_intr_handler, 0, irq_name, vf);
+	} else {
+		err = request_irq(pci_irq_vector(vf->pdev, RVU_VF_INT_VEC_MBOX),
+				  vf->hw_ops->vfaf_mbox_intr_handler, 0, irq_name,
+				  vf);
+	}
+
+	if (err) {
+		dev_err(vf->dev,
+			"RVUPF: IRQ registration failed for VFAF mbox irq\n");
+		return err;
+	}
+
+	/* Enable mailbox interrupt for msgs coming from PF. */
+	otx2_write64(vf, RVU_VF_INT_ENA_W1S, mbox_int_mask);
+
+	if (!probe_pf)
+		return 0;
+
+	/* Check mailbox communication with PF */
+	req = otx2_mbox_alloc_msg_ready(&vf->mbox);
+	if (!req) {
+		otx2vf_disable_mbox_intr(vf);
+		return -ENOMEM;
+	}
+
+	err = otx2_sync_mbox_msg(&vf->mbox);
+	if (err) {
+		dev_warn(vf->dev,
+			 "AF not responding to mailbox, deferring probe\n");
+		otx2vf_disable_mbox_intr(vf);
+		return -EPROBE_DEFER;
+	}
+	return 0;
+}
+
+static void otx2vf_vfaf_mbox_destroy(struct otx2_nic *vf)
+{
+	struct mbox *mbox = &vf->mbox;
+
+	if (vf->mbox_wq) {
+		destroy_workqueue(vf->mbox_wq);
+		vf->mbox_wq = NULL;
+	}
+
+	if (mbox->mbox.hwbase && !test_bit(CN10K_MBOX, &vf->hw.cap_flag))
+		iounmap((void __iomem *)mbox->mbox.hwbase);
+
+	otx2_mbox_destroy(&mbox->mbox);
+	otx2_mbox_destroy(&mbox->mbox_up);
+}
+
+static int otx2vf_vfaf_mbox_init(struct otx2_nic *vf)
+{
+	struct mbox *mbox = &vf->mbox;
+	void __iomem *hwbase;
+	int err;
+
+	mbox->pfvf = vf;
+	vf->mbox_wq = alloc_ordered_workqueue("otx2_vfaf_mailbox",
+					      WQ_HIGHPRI | WQ_MEM_RECLAIM);
+	if (!vf->mbox_wq)
+		return -ENOMEM;
+
+	/* For cn20k platform, VF mailbox region is in dram aliased from AF
+	 * VF MBOX ADDR, MBOX is a separate RVU block.
+	 */
+	if (is_cn20k(vf->pdev)) {
+		hwbase = vf->reg_base + RVU_VF_MBOX_REGION + ((u64)BLKADDR_MBOX <<
+			RVU_FUNC_BLKADDR_SHIFT);
+	} else if (test_bit(CN10K_MBOX, &vf->hw.cap_flag)) {
+		/* For cn10k platform, VF mailbox region is in its BAR2
+		 * register space
+		 */
+		hwbase = vf->reg_base + RVU_VF_MBOX_REGION;
+	} else {
+		/* Mailbox is a reserved memory (in RAM) region shared between
+		 * admin function (i.e PF0) and this VF, shouldn't be mapped as
+		 * device memory to allow unaligned accesses.
+		 */
+		hwbase = ioremap_wc(pci_resource_start(vf->pdev,
+						       PCI_MBOX_BAR_NUM),
+				    pci_resource_len(vf->pdev,
+						     PCI_MBOX_BAR_NUM));
+		if (!hwbase) {
+			dev_err(vf->dev, "Unable to map VFAF mailbox region\n");
+			err = -ENOMEM;
+			goto exit;
+		}
+	}
+
+	err = otx2_mbox_init(&mbox->mbox, hwbase, vf->pdev, vf->reg_base,
+			     MBOX_DIR_VFPF, 1);
+	if (err)
+		goto exit;
+
+	err = otx2_mbox_init(&mbox->mbox_up, hwbase, vf->pdev, vf->reg_base,
+			     MBOX_DIR_VFPF_UP, 1);
+	if (err)
+		goto exit;
+
+	err = otx2_mbox_bbuf_init(mbox, vf->pdev);
+	if (err)
+		goto exit;
+
+	INIT_WORK(&mbox->mbox_wrk, otx2vf_vfaf_mbox_handler);
+	INIT_WORK(&mbox->mbox_up_wrk, otx2vf_vfaf_mbox_up_handler);
+	mutex_init(&mbox->lock);
+
+	return 0;
+exit:
+	if (hwbase && !test_bit(CN10K_MBOX, &vf->hw.cap_flag))
+		iounmap(hwbase);
+	destroy_workqueue(vf->mbox_wq);
+	return err;
+}
+
+static int otx2vf_open(struct net_device *netdev)
+{
+	struct otx2_nic *vf;
+	int err;
+
+	err = otx2_open(netdev);
+	if (err)
+		return err;
+
+	/* LBKs do not receive link events so tell everyone we are up here */
+	vf = netdev_priv(netdev);
+	if (is_otx2_lbkvf(vf->pdev) || is_otx2_sdp_rep(vf->pdev)) {
+		pr_info("%s NIC Link is UP\n", netdev->name);
+		netif_carrier_on(netdev);
+		netif_tx_start_all_queues(netdev);
+	}
+
+	return 0;
+}
+
+static int otx2vf_stop(struct net_device *netdev)
+{
+	return otx2_stop(netdev);
+}
+
+static netdev_tx_t otx2vf_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct otx2_nic *vf = netdev_priv(netdev);
+	int qidx = skb_get_queue_mapping(skb);
+	struct otx2_dev_stats *dev_stats;
+	struct otx2_snd_queue *sq;
+	struct netdev_queue *txq;
+
+	/* Check for minimum and maximum packet length */
+	if (skb->len <= ETH_HLEN ||
+	    (!skb_shinfo(skb)->gso_size && skb->len > vf->tx_max_pktlen)) {
+		dev_stats = &vf->hw.dev_stats;
+		atomic_long_inc(&dev_stats->tx_discards);
+		dev_kfree_skb(skb);
+		return NETDEV_TX_OK;
+	}
+
+	sq = &vf->qset.sq[qidx];
+	txq = netdev_get_tx_queue(netdev, qidx);
+
+	if (!otx2_sq_append_skb(vf, txq, sq, skb, qidx)) {
+		netif_tx_stop_queue(txq);
+
+		/* Check again, incase SQBs got freed up */
+		smp_mb();
+		if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb)
+							> sq->sqe_thresh)
+			netif_tx_wake_queue(txq);
+
+		return NETDEV_TX_BUSY;
+	}
+
+	return NETDEV_TX_OK;
+}
+
+static void otx2vf_set_rx_mode(struct net_device *netdev)
+{
+	struct otx2_nic *vf = netdev_priv(netdev);
+
+	queue_work(vf->otx2_wq, &vf->rx_mode_work);
+}
+
+static void otx2vf_do_set_rx_mode(struct work_struct *work)
+{
+	struct otx2_nic *vf = container_of(work, struct otx2_nic, rx_mode_work);
+	struct net_device *netdev = vf->netdev;
+	unsigned int flags = netdev->flags;
+	struct nix_rx_mode *req;
+
+	mutex_lock(&vf->mbox.lock);
+
+	req = otx2_mbox_alloc_msg_nix_set_rx_mode(&vf->mbox);
+	if (!req) {
+		mutex_unlock(&vf->mbox.lock);
+		return;
+	}
+
+	req->mode = NIX_RX_MODE_UCAST;
+
+	if (flags & IFF_PROMISC)
+		req->mode |= NIX_RX_MODE_PROMISC;
+	if (flags & (IFF_ALLMULTI | IFF_MULTICAST))
+		req->mode |= NIX_RX_MODE_ALLMULTI;
+
+	req->mode |= NIX_RX_MODE_USE_MCE;
+
+	otx2_sync_mbox_msg(&vf->mbox);
+
+	mutex_unlock(&vf->mbox.lock);
+}
+
+static int otx2vf_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	bool if_up = netif_running(netdev);
+	int err = 0;
+
+	if (if_up)
+		otx2vf_stop(netdev);
+
+	netdev_info(netdev, "Changing MTU from %d to %d\n",
+		    netdev->mtu, new_mtu);
+	WRITE_ONCE(netdev->mtu, new_mtu);
+
+	if (if_up)
+		err = otx2vf_open(netdev);
+
+	return err;
+}
+
+static void otx2vf_reset_task(struct work_struct *work)
+{
+	struct otx2_nic *vf = container_of(work, struct otx2_nic, reset_task);
+
+	rtnl_lock();
+
+	if (netif_running(vf->netdev)) {
+		otx2vf_stop(vf->netdev);
+		vf->reset_count++;
+		otx2vf_open(vf->netdev);
+	}
+
+	rtnl_unlock();
+}
+
+static int otx2vf_set_features(struct net_device *netdev,
+			       netdev_features_t features)
+{
+	return otx2_handle_ntuple_tc_features(netdev, features);
+}
+
+static const struct net_device_ops otx2vf_netdev_ops = {
+	.ndo_open = otx2vf_open,
+	.ndo_stop = otx2vf_stop,
+	.ndo_start_xmit = otx2vf_xmit,
+	.ndo_select_queue = otx2_select_queue,
+	.ndo_set_rx_mode = otx2vf_set_rx_mode,
+	.ndo_set_mac_address = otx2_set_mac_address,
+	.ndo_change_mtu = otx2vf_change_mtu,
+	.ndo_set_features = otx2vf_set_features,
+	.ndo_get_stats64 = otx2_get_stats64,
+	.ndo_tx_timeout = otx2_tx_timeout,
+	.ndo_setup_tc = otx2_setup_tc,
+	.ndo_hwtstamp_get = otx2_config_hwtstamp_get,
+	.ndo_hwtstamp_set = otx2_config_hwtstamp_set,
+};
+
+static int otx2_vf_wq_init(struct otx2_nic *vf)
+{
+	vf->otx2_wq = create_singlethread_workqueue("otx2vf_wq");
+	if (!vf->otx2_wq)
+		return -ENOMEM;
+
+	INIT_WORK(&vf->rx_mode_work, otx2vf_do_set_rx_mode);
+	INIT_WORK(&vf->reset_task, otx2vf_reset_task);
+	return 0;
+}
+
+static int otx2vf_realloc_msix_vectors(struct otx2_nic *vf)
+{
+	struct otx2_hw *hw = &vf->hw;
+	int num_vec, err;
+
+	num_vec = hw->nix_msixoff;
+	num_vec += NIX_LF_CINT_VEC_START + hw->max_queues;
+
+	otx2vf_disable_mbox_intr(vf);
+	pci_free_irq_vectors(hw->pdev);
+	err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX);
+	if (err < 0) {
+		dev_err(vf->dev, "%s: Failed to realloc %d IRQ vectors\n",
+			__func__, num_vec);
+		return err;
+	}
+
+	return otx2vf_register_mbox_intr(vf, false);
+}
+
+static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	int num_vec = pci_msix_vec_count(pdev);
+	struct device *dev = &pdev->dev;
+	int err, qcount, qos_txqs;
+	struct net_device *netdev;
+	struct otx2_nic *vf;
+	struct otx2_hw *hw;
+
+	err = pcim_enable_device(pdev);
+	if (err) {
+		dev_err(dev, "Failed to enable PCI device\n");
+		return err;
+	}
+
+	err = pcim_request_all_regions(pdev, DRV_NAME);
+	if (err) {
+		dev_err(dev, "PCI request regions failed 0x%x\n", err);
+		return err;
+	}
+
+	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
+	if (err) {
+		dev_err(dev, "DMA mask config failed, abort\n");
+		return err;
+	}
+
+	pci_set_master(pdev);
+
+	qcount = num_online_cpus();
+	qos_txqs = min_t(int, qcount, OTX2_QOS_MAX_LEAF_NODES);
+	netdev = alloc_etherdev_mqs(sizeof(*vf), qcount + qos_txqs, qcount);
+	if (!netdev)
+		return -ENOMEM;
+
+	pci_set_drvdata(pdev, netdev);
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+	vf = netdev_priv(netdev);
+	vf->netdev = netdev;
+	vf->pdev = pdev;
+	vf->dev = dev;
+	vf->iommu_domain = iommu_get_domain_for_dev(dev);
+
+	vf->flags |= OTX2_FLAG_INTF_DOWN;
+	hw = &vf->hw;
+	hw->pdev = vf->pdev;
+	hw->rx_queues = qcount;
+	hw->tx_queues = qcount;
+	hw->max_queues = qcount;
+	hw->non_qos_queues = qcount;
+	hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
+	/* Use CQE of 128 byte descriptor size by default */
+	hw->xqe_size = 128;
+
+	hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE,
+					  GFP_KERNEL);
+	if (!hw->irq_name) {
+		err = -ENOMEM;
+		goto err_free_netdev;
+	}
+
+	hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec,
+					 sizeof(cpumask_var_t), GFP_KERNEL);
+	if (!hw->affinity_mask) {
+		err = -ENOMEM;
+		goto err_free_netdev;
+	}
+
+	err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX);
+	if (err < 0) {
+		dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n",
+			__func__, num_vec);
+		goto err_free_netdev;
+	}
+
+	vf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
+	if (!vf->reg_base) {
+		dev_err(dev, "Unable to map physical function CSRs, aborting\n");
+		err = -ENOMEM;
+		goto err_free_irq_vectors;
+	}
+
+	otx2_setup_dev_hw_settings(vf);
+
+	if (is_cn20k(vf->pdev))
+		cn20k_init(vf);
+	else
+		otx2_init_hw_ops(vf);
+
+	/* Init VF <=> PF mailbox stuff */
+	err = otx2vf_vfaf_mbox_init(vf);
+	if (err)
+		goto err_free_irq_vectors;
+
+	/* Register mailbox interrupt */
+	err = otx2vf_register_mbox_intr(vf, true);
+	if (err)
+		goto err_mbox_destroy;
+
+	/* Request AF to attach NPA and LIX LFs to this AF */
+	err = otx2_attach_npa_nix(vf);
+	if (err)
+		goto err_disable_mbox_intr;
+
+	err = otx2vf_realloc_msix_vectors(vf);
+	if (err)
+		goto err_detach_rsrc;
+
+	err = otx2_set_real_num_queues(netdev, qcount, qcount);
+	if (err)
+		goto err_detach_rsrc;
+
+	err = cn10k_lmtst_init(vf);
+	if (err)
+		goto err_detach_rsrc;
+
+	/* Don't check for error.  Proceed without ptp */
+	otx2_ptp_init(vf);
+
+	/* Assign default mac address */
+	otx2_get_mac_from_af(netdev);
+
+	netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
+			      NETIF_F_IPV6_CSUM | NETIF_F_RXHASH |
+			      NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
+			      NETIF_F_GSO_UDP_L4;
+	netdev->features = netdev->hw_features;
+	/* Support TSO on tag interface */
+	netdev->vlan_features |= netdev->features;
+	netdev->hw_features  |= NETIF_F_HW_VLAN_CTAG_TX |
+				NETIF_F_HW_VLAN_STAG_TX;
+	netdev->features |= netdev->hw_features;
+
+	netdev->hw_features |= NETIF_F_NTUPLE;
+	netdev->hw_features |= NETIF_F_RXALL;
+	netdev->hw_features |= NETIF_F_HW_TC;
+
+	netif_set_tso_max_segs(netdev, OTX2_MAX_GSO_SEGS);
+	netdev->watchdog_timeo = OTX2_TX_TIMEOUT;
+
+	netdev->netdev_ops = &otx2vf_netdev_ops;
+
+	netdev->min_mtu = OTX2_MIN_MTU;
+	netdev->max_mtu = otx2_get_max_mtu(vf);
+	hw->max_mtu = netdev->max_mtu;
+
+	/* To distinguish, for LBK VFs set netdev name explicitly */
+	if (is_otx2_lbkvf(vf->pdev)) {
+		int n;
+
+		n = (vf->pcifunc >> RVU_PFVF_FUNC_SHIFT) & RVU_PFVF_FUNC_MASK;
+		/* Need to subtract 1 to get proper VF number */
+		n -= 1;
+		snprintf(netdev->name, sizeof(netdev->name), "lbk%d", n);
+	}
+
+	if (is_otx2_sdp_rep(vf->pdev)) {
+		int n;
+
+		n = vf->pcifunc & RVU_PFVF_FUNC_MASK;
+		n -= 1;
+		snprintf(netdev->name, sizeof(netdev->name), "sdp%d-%d",
+			 pdev->bus->number, n);
+	}
+
+	err = cn10k_ipsec_init(netdev);
+	if (err)
+		goto err_ptp_destroy;
+
+	err = register_netdev(netdev);
+	if (err) {
+		dev_err(dev, "Failed to register netdevice\n");
+		goto err_ipsec_clean;
+	}
+
+	err = otx2_vf_wq_init(vf);
+	if (err)
+		goto err_unreg_netdev;
+
+	otx2vf_set_ethtool_ops(netdev);
+
+	err = otx2vf_mcam_flow_init(vf);
+	if (err)
+		goto err_unreg_netdev;
+
+	err = otx2_init_tc(vf);
+	if (err)
+		goto err_unreg_netdev;
+
+	err = otx2_register_dl(vf);
+	if (err)
+		goto err_shutdown_tc;
+
+	vf->af_xdp_zc_qidx = bitmap_zalloc(qcount, GFP_KERNEL);
+	if (!vf->af_xdp_zc_qidx) {
+		err = -ENOMEM;
+		goto err_unreg_devlink;
+	}
+
+#ifdef CONFIG_DCB
+	/* Priority flow control is not supported for LBK and SDP vf(s) */
+	if (!(is_otx2_lbkvf(vf->pdev) || is_otx2_sdp_rep(vf->pdev))) {
+		err = otx2_dcbnl_set_ops(netdev);
+		if (err)
+			goto err_free_zc_bmap;
+	}
+#endif
+	otx2_qos_init(vf, qos_txqs);
+
+	return 0;
+
+#ifdef CONFIG_DCB
+err_free_zc_bmap:
+	bitmap_free(vf->af_xdp_zc_qidx);
+#endif
+err_unreg_devlink:
+	otx2_unregister_dl(vf);
+err_shutdown_tc:
+	otx2_shutdown_tc(vf);
+err_unreg_netdev:
+	unregister_netdev(netdev);
+err_ipsec_clean:
+	cn10k_ipsec_clean(vf);
+err_ptp_destroy:
+	otx2_ptp_destroy(vf);
+err_detach_rsrc:
+	free_percpu(vf->hw.lmt_info);
+	if (test_bit(CN10K_LMTST, &vf->hw.cap_flag))
+		qmem_free(vf->dev, vf->dync_lmt);
+	otx2_detach_resources(&vf->mbox);
+err_disable_mbox_intr:
+	otx2vf_disable_mbox_intr(vf);
+err_mbox_destroy:
+	otx2vf_vfaf_mbox_destroy(vf);
+err_free_irq_vectors:
+	pci_free_irq_vectors(hw->pdev);
+err_free_netdev:
+	pci_set_drvdata(pdev, NULL);
+	free_netdev(netdev);
+	return err;
+}
+
+static void otx2vf_remove(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct otx2_nic *vf;
+
+	if (!netdev)
+		return;
+
+	vf = netdev_priv(netdev);
+
+	/* Disable 802.3x pause frames */
+	if (vf->flags & OTX2_FLAG_RX_PAUSE_ENABLED ||
+	    (vf->flags & OTX2_FLAG_TX_PAUSE_ENABLED)) {
+		vf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED;
+		vf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED;
+		otx2_config_pause_frm(vf);
+	}
+
+#ifdef CONFIG_DCB
+	/* Disable PFC config */
+	if (vf->pfc_en) {
+		vf->pfc_en = 0;
+		otx2_config_priority_flow_ctrl(vf);
+	}
+#endif
+
+	cancel_work_sync(&vf->reset_task);
+	otx2_unregister_dl(vf);
+	unregister_netdev(netdev);
+	if (vf->otx2_wq)
+		destroy_workqueue(vf->otx2_wq);
+	cn10k_ipsec_clean(vf);
+	otx2_ptp_destroy(vf);
+	otx2_mcam_flow_del(vf);
+	otx2_shutdown_tc(vf);
+	otx2_shutdown_qos(vf);
+	otx2_detach_resources(&vf->mbox);
+	otx2vf_disable_mbox_intr(vf);
+	free_percpu(vf->hw.lmt_info);
+	if (test_bit(CN10K_LMTST, &vf->hw.cap_flag))
+		qmem_free(vf->dev, vf->dync_lmt);
+	otx2vf_vfaf_mbox_destroy(vf);
+	pci_free_irq_vectors(vf->pdev);
+	bitmap_free(vf->af_xdp_zc_qidx);
+	pci_set_drvdata(pdev, NULL);
+	free_netdev(netdev);
+}
+
+static struct pci_driver otx2vf_driver = {
+	.name = DRV_NAME,
+	.id_table = otx2_vf_id_table,
+	.probe = otx2vf_probe,
+	.remove = otx2vf_remove,
+	.shutdown = otx2vf_remove,
+};
+
+static int __init otx2vf_init_module(void)
+{
+	pr_info("%s: %s\n", DRV_NAME, DRV_STRING);
+
+	return pci_register_driver(&otx2vf_driver);
+}
+
+static void __exit otx2vf_cleanup_module(void)
+{
+	pci_unregister_driver(&otx2vf_driver);
+}
+
+module_init(otx2vf_init_module);
+module_exit(otx2vf_cleanup_module);

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.c

@@ -0,0 +1,245 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#include <linux/bpf_trace.h>
+#include <linux/stringify.h>
+#include <net/xdp_sock_drv.h>
+#include <net/xdp.h>
+
+#include "otx2_common.h"
+#include "otx2_struct.h"
+#include "otx2_xsk.h"
+
+int otx2_xsk_pool_alloc_buf(struct otx2_nic *pfvf, struct otx2_pool *pool,
+			    dma_addr_t *dma, int idx)
+{
+	struct xdp_buff *xdp;
+	int delta;
+
+	xdp = xsk_buff_alloc(pool->xsk_pool);
+	if (!xdp)
+		return -ENOMEM;
+
+	pool->xdp[pool->xdp_top++] = xdp;
+	*dma = OTX2_DATA_ALIGN(xsk_buff_xdp_get_dma(xdp));
+	/* Adjust xdp->data for unaligned addresses */
+	delta = *dma - xsk_buff_xdp_get_dma(xdp);
+	xdp->data += delta;
+
+	return 0;
+}
+
+static int otx2_xsk_ctx_disable(struct otx2_nic *pfvf, u16 qidx, int aura_id)
+{
+	struct nix_cn10k_aq_enq_req *cn10k_rq_aq;
+	struct npa_aq_enq_req *aura_aq;
+	struct npa_aq_enq_req *pool_aq;
+	struct nix_aq_enq_req *rq_aq;
+
+	if (test_bit(CN10K_LMTST, &pfvf->hw.cap_flag)) {
+		cn10k_rq_aq = otx2_mbox_alloc_msg_nix_cn10k_aq_enq(&pfvf->mbox);
+		if (!cn10k_rq_aq)
+			return -ENOMEM;
+		cn10k_rq_aq->qidx = qidx;
+		cn10k_rq_aq->rq.ena = 0;
+		cn10k_rq_aq->rq_mask.ena = 1;
+		cn10k_rq_aq->ctype = NIX_AQ_CTYPE_RQ;
+		cn10k_rq_aq->op = NIX_AQ_INSTOP_WRITE;
+	} else {
+		rq_aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox);
+		if (!rq_aq)
+			return -ENOMEM;
+		rq_aq->qidx = qidx;
+		rq_aq->sq.ena = 0;
+		rq_aq->sq_mask.ena = 1;
+		rq_aq->ctype = NIX_AQ_CTYPE_RQ;
+		rq_aq->op = NIX_AQ_INSTOP_WRITE;
+	}
+
+	aura_aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
+	if (!aura_aq)
+		goto fail;
+
+	aura_aq->aura_id = aura_id;
+	aura_aq->aura.ena = 0;
+	aura_aq->aura_mask.ena = 1;
+	aura_aq->ctype = NPA_AQ_CTYPE_AURA;
+	aura_aq->op = NPA_AQ_INSTOP_WRITE;
+
+	pool_aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
+	if (!pool_aq)
+		goto fail;
+
+	pool_aq->aura_id = aura_id;
+	pool_aq->pool.ena = 0;
+	pool_aq->pool_mask.ena = 1;
+
+	pool_aq->ctype = NPA_AQ_CTYPE_POOL;
+	pool_aq->op = NPA_AQ_INSTOP_WRITE;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+
+fail:
+	otx2_mbox_reset(&pfvf->mbox.mbox, 0);
+	return -ENOMEM;
+}
+
+static void otx2_clean_up_rq(struct otx2_nic *pfvf, int qidx)
+{
+	struct otx2_qset *qset = &pfvf->qset;
+	struct otx2_cq_queue *cq;
+	struct otx2_pool *pool;
+	u64 iova;
+
+	/* If the DOWN flag is set SQs are already freed */
+	if (pfvf->flags & OTX2_FLAG_INTF_DOWN)
+		return;
+
+	cq = &qset->cq[qidx];
+	if (cq)
+		otx2_cleanup_rx_cqes(pfvf, cq, qidx);
+
+	pool = &pfvf->qset.pool[qidx];
+	iova = otx2_aura_allocptr(pfvf, qidx);
+	while (iova) {
+		iova -= OTX2_HEAD_ROOM;
+		otx2_free_bufs(pfvf, pool, iova, pfvf->rbsize);
+		iova = otx2_aura_allocptr(pfvf, qidx);
+	}
+
+	mutex_lock(&pfvf->mbox.lock);
+	otx2_xsk_ctx_disable(pfvf, qidx, qidx);
+	mutex_unlock(&pfvf->mbox.lock);
+}
+
+int otx2_xsk_pool_enable(struct otx2_nic *pf, struct xsk_buff_pool *pool, u16 qidx)
+{
+	u16 rx_queues = pf->hw.rx_queues;
+	u16 tx_queues = pf->hw.tx_queues;
+	int err;
+
+	if (qidx >= rx_queues || qidx >= tx_queues)
+		return -EINVAL;
+
+	err = xsk_pool_dma_map(pool, pf->dev, DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING);
+	if (err)
+		return err;
+
+	set_bit(qidx, pf->af_xdp_zc_qidx);
+	otx2_clean_up_rq(pf, qidx);
+	/* Reconfigure RSS table as 'qidx' cannot be part of RSS now */
+	otx2_set_rss_table(pf, DEFAULT_RSS_CONTEXT_GROUP, NULL);
+	/* Kick start the NAPI context so that receiving will start */
+	return otx2_xsk_wakeup(pf->netdev, qidx, XDP_WAKEUP_RX);
+}
+
+int otx2_xsk_pool_disable(struct otx2_nic *pf, u16 qidx)
+{
+	struct net_device *netdev = pf->netdev;
+	struct xsk_buff_pool *pool;
+	struct otx2_snd_queue *sq;
+
+	pool = xsk_get_pool_from_qid(netdev, qidx);
+	if (!pool)
+		return -EINVAL;
+
+	sq = &pf->qset.sq[qidx + pf->hw.tx_queues];
+	sq->xsk_pool = NULL;
+	otx2_clean_up_rq(pf, qidx);
+	clear_bit(qidx, pf->af_xdp_zc_qidx);
+	xsk_pool_dma_unmap(pool, DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING);
+	/* Reconfigure RSS table as 'qidx' now need to be part of RSS now */
+	otx2_set_rss_table(pf, DEFAULT_RSS_CONTEXT_GROUP, NULL);
+
+	return 0;
+}
+
+int otx2_xsk_pool_setup(struct otx2_nic *pf, struct xsk_buff_pool *pool, u16 qidx)
+{
+	if (pool)
+		return otx2_xsk_pool_enable(pf, pool, qidx);
+
+	return otx2_xsk_pool_disable(pf, qidx);
+}
+
+int otx2_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags)
+{
+	struct otx2_nic *pf = netdev_priv(dev);
+	struct otx2_cq_poll *cq_poll = NULL;
+	struct otx2_qset *qset = &pf->qset;
+
+	if (pf->flags & OTX2_FLAG_INTF_DOWN)
+		return -ENETDOWN;
+
+	if (queue_id >= pf->hw.rx_queues || queue_id >= pf->hw.tx_queues)
+		return -EINVAL;
+
+	cq_poll = &qset->napi[queue_id];
+	if (!cq_poll)
+		return -EINVAL;
+
+	/* Trigger interrupt */
+	if (!napi_if_scheduled_mark_missed(&cq_poll->napi)) {
+		otx2_write64(pf, NIX_LF_CINTX_ENA_W1S(cq_poll->cint_idx), BIT_ULL(0));
+		otx2_write64(pf, NIX_LF_CINTX_INT_W1S(cq_poll->cint_idx), BIT_ULL(0));
+	}
+
+	return 0;
+}
+
+void otx2_attach_xsk_buff(struct otx2_nic *pfvf, struct otx2_snd_queue *sq, int qidx)
+{
+	if (test_bit(qidx, pfvf->af_xdp_zc_qidx))
+		sq->xsk_pool = xsk_get_pool_from_qid(pfvf->netdev, qidx);
+}
+
+static void otx2_xsk_sq_append_pkt(struct otx2_nic *pfvf, u64 iova, int len,
+				   u16 qidx)
+{
+	struct nix_sqe_hdr_s *sqe_hdr;
+	struct otx2_snd_queue *sq;
+	int offset;
+
+	sq = &pfvf->qset.sq[qidx];
+	memset(sq->sqe_base + 8, 0, sq->sqe_size - 8);
+
+	sqe_hdr = (struct nix_sqe_hdr_s *)(sq->sqe_base);
+
+	if (!sqe_hdr->total) {
+		sqe_hdr->aura = sq->aura_id;
+		sqe_hdr->df = 1;
+		sqe_hdr->sq = qidx;
+		sqe_hdr->pnc = 1;
+	}
+	sqe_hdr->total = len;
+	sqe_hdr->sqe_id = sq->head;
+
+	offset = sizeof(*sqe_hdr);
+
+	otx2_xdp_sqe_add_sg(sq, NULL, iova, len, &offset, OTX2_AF_XDP_FRAME);
+	sqe_hdr->sizem1 = (offset / 16) - 1;
+	pfvf->hw_ops->sqe_flush(pfvf, sq, offset, qidx);
+}
+
+void otx2_zc_napi_handler(struct otx2_nic *pfvf, struct xsk_buff_pool *pool,
+			  int queue, int budget)
+{
+	struct xdp_desc *xdp_desc = pool->tx_descs;
+	int  i, batch;
+
+	budget = min(budget, otx2_read_free_sqe(pfvf, queue));
+	batch = xsk_tx_peek_release_desc_batch(pool, budget);
+	if (!batch)
+		return;
+
+	for (i = 0; i < batch; i++) {
+		dma_addr_t dma_addr;
+
+		dma_addr = xsk_buff_raw_get_dma(pool, xdp_desc[i].addr);
+		otx2_xsk_sq_append_pkt(pfvf, dma_addr, xdp_desc[i].len, queue);
+	}
+}

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/otx2_xsk.h

@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU PF/VF Netdev Devlink
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#ifndef	OTX2_XSK_H
+#define	OTX2_XSK_H
+
+struct otx2_nic;
+struct xsk_buff_pool;
+
+int otx2_xsk_pool_setup(struct otx2_nic *pf, struct xsk_buff_pool *pool, u16 qid);
+int otx2_xsk_pool_enable(struct otx2_nic *pf, struct xsk_buff_pool *pool, u16 qid);
+int otx2_xsk_pool_disable(struct otx2_nic *pf, u16 qid);
+int otx2_xsk_pool_alloc_buf(struct otx2_nic *pfvf, struct otx2_pool *pool,
+			    dma_addr_t *dma, int idx);
+int otx2_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags);
+void otx2_zc_napi_handler(struct otx2_nic *pfvf, struct xsk_buff_pool *pool,
+			  int queue, int budget);
+void otx2_attach_xsk_buff(struct otx2_nic *pfvf, struct otx2_snd_queue *sq, int qidx);
+
+#endif /* OTX2_XSK_H */

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/qos.h

@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU Ethernet driver
+ *
+ * Copyright (C) 2023 Marvell.
+ *
+ */
+#ifndef OTX2_QOS_H
+#define OTX2_QOS_H
+
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/rhashtable.h>
+
+#define OTX2_QOS_MAX_LVL		4
+#define OTX2_QOS_MAX_PRIO		7
+#define OTX2_QOS_MAX_LEAF_NODES                16
+
+enum qos_smq_operations {
+	QOS_CFG_SQ,
+	QOS_SMQ_FLUSH,
+};
+
+u64 otx2_get_txschq_rate_regval(struct otx2_nic *nic, u64 maxrate, u32 burst);
+
+int otx2_setup_tc_htb(struct net_device *ndev, struct tc_htb_qopt_offload *htb);
+int otx2_qos_get_qid(struct otx2_nic *pfvf);
+void otx2_qos_free_qid(struct otx2_nic *pfvf, int qidx);
+int otx2_qos_enable_sq(struct otx2_nic *pfvf, int qidx);
+void otx2_qos_disable_sq(struct otx2_nic *pfvf, int qidx);
+
+struct otx2_qos_cfg {
+	u16 schq[NIX_TXSCH_LVL_CNT];
+	u16 schq_contig[NIX_TXSCH_LVL_CNT];
+	int static_node_pos[NIX_TXSCH_LVL_CNT];
+	int dwrr_node_pos[NIX_TXSCH_LVL_CNT];
+	u16 schq_contig_list[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
+	u16 schq_list[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
+	bool schq_index_used[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
+};
+
+struct otx2_qos {
+	DECLARE_HASHTABLE(qos_hlist, order_base_2(OTX2_QOS_MAX_LEAF_NODES));
+	struct mutex qos_lock; /* child list lock */
+	u16 qid_to_sqmap[OTX2_QOS_MAX_LEAF_NODES];
+	struct list_head qos_tree;
+	DECLARE_BITMAP(qos_sq_bmap, OTX2_QOS_MAX_LEAF_NODES);
+	u16 maj_id;
+	u16 defcls;
+	u8  link_cfg_lvl; /* LINKX_CFG CSRs mapped to TL3 or TL2's index ? */
+};
+
+struct otx2_qos_node {
+	struct list_head list; /* list management */
+	struct list_head child_list;
+	struct list_head child_schq_list;
+	struct hlist_node hlist;
+	DECLARE_BITMAP(prio_bmap, OTX2_QOS_MAX_PRIO + 1);
+	struct otx2_qos_node *parent;	/* parent qos node */
+	u64 rate; /* htb params */
+	u64 ceil;
+	u32 classid;
+	u32 prio;
+	u32 quantum;
+	/* hw txschq */
+	u16 schq;
+	u16 qid;
+	u16 prio_anchor;
+	u16 max_static_prio;
+	u16 child_dwrr_cnt;
+	u16 child_static_cnt;
+	u16 child_dwrr_prio;
+	u16 txschq_idx;			/* txschq allocation index */
+	u8 level;
+	bool is_static;
+};
+
+
+#endif

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/qos_sq.c

@@ -0,0 +1,319 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Physical Function ethernet driver
+ *
+ * Copyright (C) 2023 Marvell.
+ *
+ */
+
+#include <linux/netdevice.h>
+#include <net/tso.h>
+
+#include "cn10k.h"
+#include "otx2_reg.h"
+#include "otx2_common.h"
+#include "otx2_txrx.h"
+#include "otx2_struct.h"
+
+#define OTX2_QOS_MAX_LEAF_NODES 16
+
+static void otx2_qos_aura_pool_free(struct otx2_nic *pfvf, int pool_id)
+{
+	struct otx2_pool *pool;
+
+	if (!pfvf->qset.pool)
+		return;
+
+	pool = &pfvf->qset.pool[pool_id];
+	qmem_free(pfvf->dev, pool->stack);
+	qmem_free(pfvf->dev, pool->fc_addr);
+	pool->stack = NULL;
+	pool->fc_addr = NULL;
+}
+
+static int otx2_qos_sq_aura_pool_init(struct otx2_nic *pfvf, int qidx)
+{
+	struct otx2_qset *qset = &pfvf->qset;
+	int pool_id, stack_pages, num_sqbs;
+	struct otx2_hw *hw = &pfvf->hw;
+	struct otx2_snd_queue *sq;
+	struct otx2_pool *pool;
+	dma_addr_t bufptr;
+	int err, ptr;
+	u64 iova, pa;
+
+	/* Calculate number of SQBs needed.
+	 *
+	 * For a 128byte SQE, and 4K size SQB, 31 SQEs will fit in one SQB.
+	 * Last SQE is used for pointing to next SQB.
+	 */
+	num_sqbs = (hw->sqb_size / 128) - 1;
+	num_sqbs = (qset->sqe_cnt + num_sqbs) / num_sqbs;
+
+	/* Get no of stack pages needed */
+	stack_pages =
+		(num_sqbs + hw->stack_pg_ptrs - 1) / hw->stack_pg_ptrs;
+
+	pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx);
+	pool = &pfvf->qset.pool[pool_id];
+
+	/* Initialize aura context */
+	err = otx2_aura_init(pfvf, pool_id, pool_id, num_sqbs);
+	if (err)
+		return err;
+
+	/* Initialize pool context */
+	err = otx2_pool_init(pfvf, pool_id, stack_pages,
+			     num_sqbs, hw->sqb_size, AURA_NIX_SQ);
+	if (err)
+		goto aura_free;
+
+	/* Flush accumulated messages */
+	err = otx2_sync_mbox_msg(&pfvf->mbox);
+	if (err)
+		goto pool_free;
+
+	/* Allocate pointers and free them to aura/pool */
+	sq = &qset->sq[qidx];
+	sq->sqb_count = 0;
+	sq->sqb_ptrs = kcalloc(num_sqbs, sizeof(*sq->sqb_ptrs), GFP_KERNEL);
+	if (!sq->sqb_ptrs) {
+		err = -ENOMEM;
+		goto pool_free;
+	}
+
+	for (ptr = 0; ptr < num_sqbs; ptr++) {
+		err = otx2_alloc_rbuf(pfvf, pool, &bufptr, pool_id, ptr);
+		if (err)
+			goto sqb_free;
+		pfvf->hw_ops->aura_freeptr(pfvf, pool_id, bufptr);
+		sq->sqb_ptrs[sq->sqb_count++] = (u64)bufptr;
+	}
+
+	return 0;
+
+sqb_free:
+	while (ptr--) {
+		if (!sq->sqb_ptrs[ptr])
+			continue;
+		iova = sq->sqb_ptrs[ptr];
+		pa = otx2_iova_to_phys(pfvf->iommu_domain, iova);
+		dma_unmap_page_attrs(pfvf->dev, iova, hw->sqb_size,
+				     DMA_FROM_DEVICE,
+				     DMA_ATTR_SKIP_CPU_SYNC);
+		put_page(virt_to_page(phys_to_virt(pa)));
+		otx2_aura_allocptr(pfvf, pool_id);
+	}
+	sq->sqb_count = 0;
+	kfree(sq->sqb_ptrs);
+pool_free:
+	qmem_free(pfvf->dev, pool->stack);
+aura_free:
+	qmem_free(pfvf->dev, pool->fc_addr);
+	otx2_mbox_reset(&pfvf->mbox.mbox, 0);
+	return err;
+}
+
+static void otx2_qos_sq_free_sqbs(struct otx2_nic *pfvf, int qidx)
+{
+	struct otx2_qset *qset = &pfvf->qset;
+	struct otx2_hw *hw = &pfvf->hw;
+	struct otx2_snd_queue *sq;
+	u64 iova, pa;
+	int sqb;
+
+	sq = &qset->sq[qidx];
+	if (!sq->sqb_ptrs)
+		return;
+	for (sqb = 0; sqb < sq->sqb_count; sqb++) {
+		if (!sq->sqb_ptrs[sqb])
+			continue;
+		iova = sq->sqb_ptrs[sqb];
+		pa = otx2_iova_to_phys(pfvf->iommu_domain, iova);
+		dma_unmap_page_attrs(pfvf->dev, iova, hw->sqb_size,
+				     DMA_FROM_DEVICE,
+				     DMA_ATTR_SKIP_CPU_SYNC);
+		put_page(virt_to_page(phys_to_virt(pa)));
+	}
+
+	sq->sqb_count = 0;
+
+	sq = &qset->sq[qidx];
+	qmem_free(pfvf->dev, sq->sqe);
+	qmem_free(pfvf->dev, sq->tso_hdrs);
+	kfree(sq->sg);
+	kfree(sq->sqb_ptrs);
+	qmem_free(pfvf->dev, sq->timestamps);
+
+	memset((void *)sq, 0, sizeof(*sq));
+}
+
+/* send queue id */
+static void otx2_qos_sqb_flush(struct otx2_nic *pfvf, int qidx)
+{
+	int sqe_tail, sqe_head;
+	void __iomem *ptr;
+	u64 incr, val;
+
+	ptr = otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_STATUS);
+	incr = (u64)qidx << 32;
+	val = otx2_atomic64_add(incr, ptr);
+	sqe_head = (val >> 20) & 0x3F;
+	sqe_tail = (val >> 28) & 0x3F;
+	if (sqe_head != sqe_tail)
+		usleep_range(50, 60);
+}
+
+static int otx2_qos_ctx_disable(struct otx2_nic *pfvf, u16 qidx, int aura_id)
+{
+	struct nix_cn10k_aq_enq_req *cn10k_sq_aq;
+	struct npa_aq_enq_req *aura_aq;
+	struct npa_aq_enq_req *pool_aq;
+	struct nix_aq_enq_req *sq_aq;
+
+	if (test_bit(CN10K_LMTST, &pfvf->hw.cap_flag)) {
+		cn10k_sq_aq = otx2_mbox_alloc_msg_nix_cn10k_aq_enq(&pfvf->mbox);
+		if (!cn10k_sq_aq)
+			return -ENOMEM;
+		cn10k_sq_aq->qidx = qidx;
+		cn10k_sq_aq->sq.ena = 0;
+		cn10k_sq_aq->sq_mask.ena = 1;
+		cn10k_sq_aq->ctype = NIX_AQ_CTYPE_SQ;
+		cn10k_sq_aq->op = NIX_AQ_INSTOP_WRITE;
+	} else {
+		sq_aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox);
+		if (!sq_aq)
+			return -ENOMEM;
+		sq_aq->qidx = qidx;
+		sq_aq->sq.ena = 0;
+		sq_aq->sq_mask.ena = 1;
+		sq_aq->ctype = NIX_AQ_CTYPE_SQ;
+		sq_aq->op = NIX_AQ_INSTOP_WRITE;
+	}
+
+	aura_aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
+	if (!aura_aq) {
+		otx2_mbox_reset(&pfvf->mbox.mbox, 0);
+		return -ENOMEM;
+	}
+
+	aura_aq->aura_id = aura_id;
+	aura_aq->aura.ena = 0;
+	aura_aq->aura_mask.ena = 1;
+	aura_aq->ctype = NPA_AQ_CTYPE_AURA;
+	aura_aq->op = NPA_AQ_INSTOP_WRITE;
+
+	pool_aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox);
+	if (!pool_aq) {
+		otx2_mbox_reset(&pfvf->mbox.mbox, 0);
+		return -ENOMEM;
+	}
+
+	pool_aq->aura_id = aura_id;
+	pool_aq->pool.ena = 0;
+	pool_aq->pool_mask.ena = 1;
+
+	pool_aq->ctype = NPA_AQ_CTYPE_POOL;
+	pool_aq->op = NPA_AQ_INSTOP_WRITE;
+
+	return otx2_sync_mbox_msg(&pfvf->mbox);
+}
+
+int otx2_qos_get_qid(struct otx2_nic *pfvf)
+{
+	int qidx;
+
+	qidx = find_first_zero_bit(pfvf->qos.qos_sq_bmap,
+				   pfvf->hw.tc_tx_queues);
+
+	return qidx == pfvf->hw.tc_tx_queues ? -ENOSPC : qidx;
+}
+
+void otx2_qos_free_qid(struct otx2_nic *pfvf, int qidx)
+{
+	clear_bit(qidx, pfvf->qos.qos_sq_bmap);
+}
+
+int otx2_qos_enable_sq(struct otx2_nic *pfvf, int qidx)
+{
+	struct otx2_hw *hw = &pfvf->hw;
+	int pool_id, sq_idx, err;
+
+	if (pfvf->flags & OTX2_FLAG_INTF_DOWN)
+		return -EPERM;
+
+	sq_idx = hw->non_qos_queues + qidx;
+
+	mutex_lock(&pfvf->mbox.lock);
+	err = otx2_qos_sq_aura_pool_init(pfvf, sq_idx);
+	if (err)
+		goto out;
+
+	pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, sq_idx);
+	err = otx2_sq_init(pfvf, sq_idx, pool_id);
+	if (err)
+		goto out;
+out:
+	mutex_unlock(&pfvf->mbox.lock);
+	return err;
+}
+
+static int otx2_qos_nix_npa_ndc_sync(struct otx2_nic *pfvf)
+{
+	struct ndc_sync_op *req;
+	int rc;
+
+	mutex_lock(&pfvf->mbox.lock);
+
+	req = otx2_mbox_alloc_msg_ndc_sync_op(&pfvf->mbox);
+	if (!req) {
+		mutex_unlock(&pfvf->mbox.lock);
+		return -ENOMEM;
+	}
+
+	req->nix_lf_tx_sync = true;
+	req->npa_lf_sync = true;
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+	mutex_unlock(&pfvf->mbox.lock);
+	return rc;
+}
+
+void otx2_qos_disable_sq(struct otx2_nic *pfvf, int qidx)
+{
+	struct otx2_qset *qset = &pfvf->qset;
+	struct otx2_hw *hw = &pfvf->hw;
+	struct otx2_snd_queue *sq;
+	struct otx2_cq_queue *cq;
+	int pool_id, sq_idx;
+
+	sq_idx = hw->non_qos_queues + qidx;
+
+	/* If the DOWN flag is set SQs are already freed */
+	if (pfvf->flags & OTX2_FLAG_INTF_DOWN)
+		return;
+
+	sq = &pfvf->qset.sq[sq_idx];
+	if (!sq->sqb_ptrs)
+		return;
+
+	if (sq_idx < hw->non_qos_queues ||
+	    sq_idx >= otx2_get_total_tx_queues(pfvf)) {
+		netdev_err(pfvf->netdev, "Send Queue is not a QoS queue\n");
+		return;
+	}
+
+	cq = &qset->cq[pfvf->hw.rx_queues + sq_idx];
+	pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, sq_idx);
+
+	otx2_qos_sqb_flush(pfvf, sq_idx);
+	otx2_smq_flush(pfvf, otx2_get_smq_idx(pfvf, sq_idx));
+	/* NIX/NPA NDC sync */
+	otx2_qos_nix_npa_ndc_sync(pfvf);
+	otx2_cleanup_tx_cqes(pfvf, cq);
+
+	mutex_lock(&pfvf->mbox.lock);
+	otx2_qos_ctx_disable(pfvf, sq_idx, pool_id);
+	mutex_unlock(&pfvf->mbox.lock);
+
+	otx2_qos_sq_free_sqbs(pfvf, sq_idx);
+	otx2_qos_aura_pool_free(pfvf, pool_id);
+}

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/rep.c

@@ -0,0 +1,880 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU representor driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/net_tstamp.h>
+#include <linux/sort.h>
+
+#include "otx2_common.h"
+#include "cn10k.h"
+#include "otx2_reg.h"
+#include "rep.h"
+
+#define DRV_NAME	"rvu_rep"
+#define DRV_STRING	"Marvell RVU Representor Driver"
+
+static const struct pci_device_id rvu_rep_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_RVU_REP) },
+	{ }
+};
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION(DRV_STRING);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
+
+static int rvu_rep_notify_pfvf(struct otx2_nic *priv, u16 event,
+			       struct rep_event *data);
+
+static int rvu_rep_mcam_flow_init(struct rep_dev *rep)
+{
+	struct npc_mcam_alloc_entry_req *req;
+	struct npc_mcam_alloc_entry_rsp *rsp;
+	struct otx2_nic *priv = rep->mdev;
+	int ent, allocated = 0;
+	int count;
+
+	rep->flow_cfg = kzalloc_objs(struct otx2_flow_config, 1);
+
+	if (!rep->flow_cfg)
+		return -ENOMEM;
+
+	count = OTX2_DEFAULT_FLOWCOUNT;
+
+	rep->flow_cfg->flow_ent = kcalloc(count, sizeof(u16), GFP_KERNEL);
+	if (!rep->flow_cfg->flow_ent)
+		return -ENOMEM;
+
+	while (allocated < count) {
+		req = otx2_mbox_alloc_msg_npc_mcam_alloc_entry(&priv->mbox);
+		if (!req)
+			goto exit;
+
+		req->hdr.pcifunc = rep->pcifunc;
+		req->contig = false;
+		req->ref_entry = 0;
+		req->count = (count - allocated) > NPC_MAX_NONCONTIG_ENTRIES ?
+				NPC_MAX_NONCONTIG_ENTRIES : count - allocated;
+
+		if (otx2_sync_mbox_msg(&priv->mbox))
+			goto exit;
+
+		rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp
+			(&priv->mbox.mbox, 0, &req->hdr);
+		if (IS_ERR(rsp))
+			goto exit;
+
+		for (ent = 0; ent < rsp->count; ent++)
+			rep->flow_cfg->flow_ent[ent + allocated] = rsp->entry_list[ent];
+
+		allocated += rsp->count;
+
+		if (rsp->count != req->count)
+			break;
+	}
+exit:
+	/* Multiple MCAM entry alloc requests could result in non-sequential
+	 * MCAM entries in the flow_ent[] array. Sort them in an ascending
+	 * order, otherwise user installed ntuple filter index and MCAM entry
+	 * index will not be in sync.
+	 */
+	if (allocated)
+		sort(&rep->flow_cfg->flow_ent[0], allocated,
+		     sizeof(rep->flow_cfg->flow_ent[0]), mcam_entry_cmp, NULL);
+
+	mutex_unlock(&priv->mbox.lock);
+
+	rep->flow_cfg->max_flows = allocated;
+
+	if (allocated) {
+		rep->flags |= OTX2_FLAG_MCAM_ENTRIES_ALLOC;
+		rep->flags |= OTX2_FLAG_NTUPLE_SUPPORT;
+		rep->flags |= OTX2_FLAG_TC_FLOWER_SUPPORT;
+	}
+
+	INIT_LIST_HEAD(&rep->flow_cfg->flow_list);
+	INIT_LIST_HEAD(&rep->flow_cfg->flow_list_tc);
+	return 0;
+}
+
+static int rvu_rep_setup_tc_cb(enum tc_setup_type type,
+			       void *type_data, void *cb_priv)
+{
+	struct rep_dev *rep = cb_priv;
+	struct otx2_nic *priv = rep->mdev;
+
+	if (!(rep->flags & RVU_REP_VF_INITIALIZED))
+		return -EINVAL;
+
+	if (!(rep->flags & OTX2_FLAG_TC_FLOWER_SUPPORT))
+		rvu_rep_mcam_flow_init(rep);
+
+	priv->netdev = rep->netdev;
+	priv->flags = rep->flags;
+	priv->pcifunc = rep->pcifunc;
+	priv->flow_cfg = rep->flow_cfg;
+
+	switch (type) {
+	case TC_SETUP_CLSFLOWER:
+		return otx2_setup_tc_cls_flower(priv, type_data);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static LIST_HEAD(rvu_rep_block_cb_list);
+static int rvu_rep_setup_tc(struct net_device *netdev, enum tc_setup_type type,
+			    void *type_data)
+{
+	struct rvu_rep *rep = netdev_priv(netdev);
+
+	switch (type) {
+	case TC_SETUP_BLOCK:
+		return flow_block_cb_setup_simple(type_data,
+						  &rvu_rep_block_cb_list,
+						  rvu_rep_setup_tc_cb,
+						  rep, rep, true);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int
+rvu_rep_sp_stats64(const struct net_device *dev,
+		   struct rtnl_link_stats64 *stats)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *priv = rep->mdev;
+	struct otx2_rcv_queue *rq;
+	struct otx2_snd_queue *sq;
+	u16 qidx = rep->rep_id;
+
+	otx2_update_rq_stats(priv, qidx);
+	rq = &priv->qset.rq[qidx];
+
+	otx2_update_sq_stats(priv, qidx);
+	sq = &priv->qset.sq[qidx];
+
+	stats->tx_bytes = sq->stats.bytes;
+	stats->tx_packets = sq->stats.pkts;
+	stats->rx_bytes = rq->stats.bytes;
+	stats->rx_packets = rq->stats.pkts;
+	return 0;
+}
+
+static bool
+rvu_rep_has_offload_stats(const struct net_device *dev, int attr_id)
+{
+	return attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT;
+}
+
+static int
+rvu_rep_get_offload_stats(int attr_id, const struct net_device *dev,
+			  void *sp)
+{
+	if (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT)
+		return rvu_rep_sp_stats64(dev, (struct rtnl_link_stats64 *)sp);
+
+	return -EINVAL;
+}
+
+static int rvu_rep_dl_port_fn_hw_addr_get(struct devlink_port *port,
+					  u8 *hw_addr, int *hw_addr_len,
+					  struct netlink_ext_ack *extack)
+{
+	struct rep_dev *rep = container_of(port, struct rep_dev, dl_port);
+
+	ether_addr_copy(hw_addr, rep->mac);
+	*hw_addr_len = ETH_ALEN;
+	return 0;
+}
+
+static int rvu_rep_dl_port_fn_hw_addr_set(struct devlink_port *port,
+					  const u8 *hw_addr, int hw_addr_len,
+					  struct netlink_ext_ack *extack)
+{
+	struct rep_dev *rep = container_of(port, struct rep_dev, dl_port);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	eth_hw_addr_set(rep->netdev, hw_addr);
+	ether_addr_copy(rep->mac, hw_addr);
+
+	ether_addr_copy(evt.evt_data.mac, hw_addr);
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_MAC_ADDR_CHANGE, &evt);
+	return 0;
+}
+
+static const struct devlink_port_ops rvu_rep_dl_port_ops = {
+	.port_fn_hw_addr_get = rvu_rep_dl_port_fn_hw_addr_get,
+	.port_fn_hw_addr_set = rvu_rep_dl_port_fn_hw_addr_set,
+};
+
+static void
+rvu_rep_devlink_set_switch_id(struct otx2_nic *priv,
+			      struct netdev_phys_item_id *ppid)
+{
+	struct pci_dev *pdev = priv->pdev;
+	u64 id;
+
+	id = pci_get_dsn(pdev);
+
+	ppid->id_len = sizeof(id);
+	put_unaligned_be64(id, &ppid->id);
+}
+
+static void rvu_rep_devlink_port_unregister(struct rep_dev *rep)
+{
+	devlink_port_unregister(&rep->dl_port);
+}
+
+static int rvu_rep_devlink_port_register(struct rep_dev *rep)
+{
+	struct devlink_port_attrs attrs = {};
+	struct otx2_nic *priv = rep->mdev;
+	struct devlink *dl = priv->dl->dl;
+	int err;
+
+	if (!(rep->pcifunc & RVU_PFVF_FUNC_MASK)) {
+		attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+		attrs.phys.port_number = rvu_get_pf(priv->pdev, rep->pcifunc);
+	} else {
+		attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
+		attrs.pci_vf.pf = rvu_get_pf(priv->pdev, rep->pcifunc);
+		attrs.pci_vf.vf = rep->pcifunc & RVU_PFVF_FUNC_MASK;
+	}
+
+	rvu_rep_devlink_set_switch_id(priv, &attrs.switch_id);
+	devlink_port_attrs_set(&rep->dl_port, &attrs);
+
+	err = devl_port_register_with_ops(dl, &rep->dl_port, rep->rep_id,
+					  &rvu_rep_dl_port_ops);
+	if (err) {
+		dev_err(rep->mdev->dev, "devlink_port_register failed: %d\n",
+			err);
+		return err;
+	}
+	return 0;
+}
+
+static int rvu_rep_get_repid(struct otx2_nic *priv, u16 pcifunc)
+{
+	int rep_id;
+
+	for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++)
+		if (priv->rep_pf_map[rep_id] == pcifunc)
+			return rep_id;
+	return -EINVAL;
+}
+
+static int rvu_rep_notify_pfvf(struct otx2_nic *priv, u16 event,
+			       struct rep_event *data)
+{
+	struct rep_event *req;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_rep_event_notify(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return -ENOMEM;
+	}
+	req->event = event;
+	req->pcifunc = data->pcifunc;
+
+	memcpy(&req->evt_data, &data->evt_data, sizeof(struct rep_evt_data));
+	otx2_sync_mbox_msg(&priv->mbox);
+	mutex_unlock(&priv->mbox.lock);
+	return 0;
+}
+
+static void rvu_rep_state_evt_handler(struct otx2_nic *priv,
+				      struct rep_event *info)
+{
+	struct rep_dev *rep;
+	int rep_id;
+
+	rep_id = rvu_rep_get_repid(priv, info->pcifunc);
+	rep = priv->reps[rep_id];
+	if (info->evt_data.vf_state)
+		rep->flags |= RVU_REP_VF_INITIALIZED;
+	else
+		rep->flags &= ~RVU_REP_VF_INITIALIZED;
+}
+
+int rvu_event_up_notify(struct otx2_nic *pf, struct rep_event *info)
+{
+	if (info->event & RVU_EVENT_PFVF_STATE)
+		rvu_rep_state_evt_handler(pf, info);
+	return 0;
+}
+
+static int rvu_rep_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	netdev_info(dev, "Changing MTU from %d to %d\n",
+		    dev->mtu, new_mtu);
+	dev->mtu = new_mtu;
+
+	evt.evt_data.mtu = new_mtu;
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_MTU_CHANGE, &evt);
+	return 0;
+}
+
+static void rvu_rep_get_stats(struct work_struct *work)
+{
+	struct delayed_work *del_work = to_delayed_work(work);
+	struct nix_stats_req *req;
+	struct nix_stats_rsp *rsp;
+	struct rep_stats *stats;
+	struct otx2_nic *priv;
+	struct rep_dev *rep;
+	int err;
+
+	rep = container_of(del_work, struct rep_dev, stats_wrk);
+	priv = rep->mdev;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_nix_lf_stats(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return;
+	}
+	req->pcifunc = rep->pcifunc;
+	err = otx2_sync_mbox_msg_busy_poll(&priv->mbox);
+	if (err)
+		goto exit;
+
+	rsp = (struct nix_stats_rsp *)
+	      otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
+
+	if (IS_ERR(rsp)) {
+		err = PTR_ERR(rsp);
+		goto exit;
+	}
+
+	stats = &rep->stats;
+	stats->rx_bytes = rsp->rx.octs;
+	stats->rx_frames = rsp->rx.ucast + rsp->rx.bcast +
+			    rsp->rx.mcast;
+	stats->rx_drops = rsp->rx.drop;
+	stats->rx_mcast_frames = rsp->rx.mcast;
+	stats->tx_bytes = rsp->tx.octs;
+	stats->tx_frames = rsp->tx.ucast + rsp->tx.bcast + rsp->tx.mcast;
+	stats->tx_drops = rsp->tx.drop +
+			  (unsigned long)atomic_long_read(&stats->tx_discards);
+exit:
+	mutex_unlock(&priv->mbox.lock);
+}
+
+static void rvu_rep_get_stats64(struct net_device *dev,
+				struct rtnl_link_stats64 *stats)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+
+	if (!(rep->flags & RVU_REP_VF_INITIALIZED))
+		return;
+
+	stats->rx_packets = rep->stats.rx_frames;
+	stats->rx_bytes = rep->stats.rx_bytes;
+	stats->rx_dropped = rep->stats.rx_drops;
+	stats->multicast = rep->stats.rx_mcast_frames;
+
+	stats->tx_packets = rep->stats.tx_frames;
+	stats->tx_bytes = rep->stats.tx_bytes;
+	stats->tx_dropped = rep->stats.tx_drops;
+
+	schedule_delayed_work(&rep->stats_wrk, msecs_to_jiffies(100));
+}
+
+static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
+{
+	struct esw_cfg_req *req;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_esw_cfg(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return -ENOMEM;
+	}
+	req->ena = ena;
+	otx2_sync_mbox_msg(&priv->mbox);
+	mutex_unlock(&priv->mbox.lock);
+	return 0;
+}
+
+static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *pf = rep->mdev;
+	struct otx2_snd_queue *sq;
+	struct netdev_queue *txq;
+	struct rep_stats *stats;
+
+	/* Check for minimum and maximum packet length */
+	if (skb->len <= ETH_HLEN ||
+	    (!skb_shinfo(skb)->gso_size && skb->len > pf->tx_max_pktlen)) {
+		stats = &rep->stats;
+		atomic_long_inc(&stats->tx_discards);
+		dev_kfree_skb(skb);
+		return NETDEV_TX_OK;
+	}
+
+	sq = &pf->qset.sq[rep->rep_id];
+	txq = netdev_get_tx_queue(dev, 0);
+
+	if (!otx2_sq_append_skb(pf, txq, sq, skb, rep->rep_id)) {
+		netif_tx_stop_queue(txq);
+
+		/* Check again, in case SQBs got freed up */
+		smp_mb();
+		if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb)
+							> sq->sqe_thresh)
+			netif_tx_wake_queue(txq);
+
+		return NETDEV_TX_BUSY;
+	}
+	return NETDEV_TX_OK;
+}
+
+static int rvu_rep_open(struct net_device *dev)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	if (!(rep->flags & RVU_REP_VF_INITIALIZED))
+		return 0;
+
+	netif_carrier_on(dev);
+	netif_tx_start_all_queues(dev);
+
+	evt.event = RVU_EVENT_PORT_STATE;
+	evt.evt_data.port_state = 1;
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_PORT_STATE, &evt);
+	return 0;
+}
+
+static int rvu_rep_stop(struct net_device *dev)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	if (!(rep->flags & RVU_REP_VF_INITIALIZED))
+		return 0;
+
+	netif_carrier_off(dev);
+	netif_tx_disable(dev);
+
+	evt.event = RVU_EVENT_PORT_STATE;
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_PORT_STATE, &evt);
+	return 0;
+}
+
+static const struct net_device_ops rvu_rep_netdev_ops = {
+	.ndo_open		= rvu_rep_open,
+	.ndo_stop		= rvu_rep_stop,
+	.ndo_start_xmit		= rvu_rep_xmit,
+	.ndo_get_stats64	= rvu_rep_get_stats64,
+	.ndo_change_mtu		= rvu_rep_change_mtu,
+	.ndo_has_offload_stats	= rvu_rep_has_offload_stats,
+	.ndo_get_offload_stats	= rvu_rep_get_offload_stats,
+	.ndo_setup_tc		= rvu_rep_setup_tc,
+};
+
+static int rvu_rep_napi_init(struct otx2_nic *priv,
+			     struct netlink_ext_ack *extack)
+{
+	struct otx2_qset *qset = &priv->qset;
+	struct otx2_cq_poll *cq_poll = NULL;
+	struct otx2_hw *hw = &priv->hw;
+	int err = 0, qidx, vec;
+	char *irq_name;
+
+	qset->napi = kzalloc_objs(*cq_poll, hw->cint_cnt);
+	if (!qset->napi)
+		return -ENOMEM;
+
+	/* Register NAPI handler */
+	for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
+		cq_poll = &qset->napi[qidx];
+		cq_poll->cint_idx = qidx;
+		cq_poll->cq_ids[CQ_RX] =
+			(qidx <  hw->rx_queues) ? qidx : CINT_INVALID_CQ;
+		cq_poll->cq_ids[CQ_TX] = (qidx < hw->tx_queues) ?
+					  qidx + hw->rx_queues :
+					  CINT_INVALID_CQ;
+		cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ;
+		cq_poll->cq_ids[CQ_QOS] = CINT_INVALID_CQ;
+
+		cq_poll->dev = (void *)priv;
+		netif_napi_add(priv->reps[qidx]->netdev, &cq_poll->napi,
+			       otx2_napi_handler);
+		napi_enable(&cq_poll->napi);
+	}
+	/* Register CQ IRQ handlers */
+	vec = hw->nix_msixoff + NIX_LF_CINT_VEC_START;
+	for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
+		irq_name = &hw->irq_name[vec * NAME_SIZE];
+
+		snprintf(irq_name, NAME_SIZE, "rep%d-rxtx-%d", qidx, qidx);
+
+		err = request_irq(pci_irq_vector(priv->pdev, vec),
+				  otx2_cq_intr_handler, 0, irq_name,
+				  &qset->napi[qidx]);
+		if (err) {
+			NL_SET_ERR_MSG_FMT_MOD(extack,
+					       "RVU REP IRQ registration failed for CQ%d",
+					       qidx);
+			goto err_free_cints;
+		}
+		vec++;
+
+		/* Enable CQ IRQ */
+		otx2_write64(priv, NIX_LF_CINTX_INT(qidx), BIT_ULL(0));
+		otx2_write64(priv, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0));
+	}
+	priv->flags &= ~OTX2_FLAG_INTF_DOWN;
+	return 0;
+
+err_free_cints:
+	otx2_free_cints(priv, qidx);
+	otx2_disable_napi(priv);
+	return err;
+}
+
+static void rvu_rep_free_cq_rsrc(struct otx2_nic *priv)
+{
+	struct otx2_qset *qset = &priv->qset;
+	struct otx2_cq_poll *cq_poll = NULL;
+	int qidx, vec;
+
+	/* Cleanup CQ NAPI and IRQ */
+	vec = priv->hw.nix_msixoff + NIX_LF_CINT_VEC_START;
+	for (qidx = 0; qidx < priv->hw.cint_cnt; qidx++) {
+		/* Disable interrupt */
+		otx2_write64(priv, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0));
+
+		synchronize_irq(pci_irq_vector(priv->pdev, vec));
+
+		cq_poll = &qset->napi[qidx];
+		napi_synchronize(&cq_poll->napi);
+		vec++;
+	}
+	otx2_free_cints(priv, priv->hw.cint_cnt);
+	otx2_disable_napi(priv);
+}
+
+static void rvu_rep_rsrc_free(struct otx2_nic *priv)
+{
+	struct otx2_qset *qset = &priv->qset;
+	struct delayed_work *work;
+	int wrk;
+
+	for (wrk = 0; wrk < priv->qset.cq_cnt; wrk++) {
+		work = &priv->refill_wrk[wrk].pool_refill_work;
+		cancel_delayed_work_sync(work);
+	}
+	devm_kfree(priv->dev, priv->refill_wrk);
+
+	otx2_free_hw_resources(priv);
+	otx2_free_queue_mem(qset);
+}
+
+static int rvu_rep_rsrc_init(struct otx2_nic *priv)
+{
+	struct otx2_qset *qset = &priv->qset;
+	int err;
+
+	err = otx2_alloc_queue_mem(priv);
+	if (err)
+		return err;
+
+	priv->hw.max_mtu = otx2_get_max_mtu(priv);
+	priv->tx_max_pktlen = priv->hw.max_mtu + OTX2_ETH_HLEN;
+	priv->rbsize = ALIGN(priv->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM;
+
+	err = otx2_init_hw_resources(priv);
+	if (err)
+		goto err_free_mem;
+
+	/* Set maximum frame size allowed in HW */
+	err = otx2_hw_set_mtu(priv, priv->hw.max_mtu);
+	if (err) {
+		dev_err(priv->dev, "Failed to set HW MTU\n");
+		goto err_free_rsrc;
+	}
+	return 0;
+
+err_free_rsrc:
+	otx2_free_hw_resources(priv);
+err_free_mem:
+	otx2_free_queue_mem(qset);
+	return err;
+}
+
+void rvu_rep_destroy(struct otx2_nic *priv)
+{
+	struct rep_dev *rep;
+	int rep_id;
+
+	rvu_eswitch_config(priv, false);
+	priv->flags |= OTX2_FLAG_INTF_DOWN;
+	rvu_rep_free_cq_rsrc(priv);
+	for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++) {
+		rep = priv->reps[rep_id];
+		unregister_netdev(rep->netdev);
+		rvu_rep_devlink_port_unregister(rep);
+		free_netdev(rep->netdev);
+		kfree(rep->flow_cfg);
+	}
+	kfree(priv->reps);
+	rvu_rep_rsrc_free(priv);
+}
+
+int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
+{
+	int rep_cnt = priv->rep_cnt;
+	struct net_device *ndev;
+	struct rep_dev *rep;
+	int rep_id, err;
+	u16 pcifunc;
+
+	err = rvu_rep_rsrc_init(priv);
+	if (err)
+		return -ENOMEM;
+
+	priv->reps = kzalloc_objs(struct rep_dev *, rep_cnt);
+	if (!priv->reps)
+		return -ENOMEM;
+
+	for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
+		ndev = alloc_etherdev(sizeof(*rep));
+		if (!ndev) {
+			NL_SET_ERR_MSG_FMT_MOD(extack,
+					       "PFVF representor:%d creation failed",
+					       rep_id);
+			err = -ENOMEM;
+			goto exit;
+		}
+
+		rep = netdev_priv(ndev);
+		priv->reps[rep_id] = rep;
+		rep->mdev = priv;
+		rep->netdev = ndev;
+		rep->rep_id = rep_id;
+
+		ndev->min_mtu = OTX2_MIN_MTU;
+		ndev->max_mtu = priv->hw.max_mtu;
+		ndev->netdev_ops = &rvu_rep_netdev_ops;
+		pcifunc = priv->rep_pf_map[rep_id];
+		rep->pcifunc = pcifunc;
+
+		snprintf(ndev->name, sizeof(ndev->name), "Rpf%dvf%d",
+			 rvu_get_pf(priv->pdev, pcifunc),
+			 (pcifunc & RVU_PFVF_FUNC_MASK));
+
+		ndev->hw_features = (NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
+			       NETIF_F_IPV6_CSUM | NETIF_F_RXHASH |
+			       NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6);
+
+		ndev->hw_features |= NETIF_F_HW_TC;
+		ndev->features |= ndev->hw_features;
+		eth_hw_addr_random(ndev);
+		err = rvu_rep_devlink_port_register(rep);
+		if (err) {
+			free_netdev(ndev);
+			goto exit;
+		}
+
+		SET_NETDEV_DEVLINK_PORT(ndev, &rep->dl_port);
+		err = register_netdev(ndev);
+		if (err) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "PFVF representor registration failed");
+			rvu_rep_devlink_port_unregister(rep);
+			free_netdev(ndev);
+			goto exit;
+		}
+
+		INIT_DELAYED_WORK(&rep->stats_wrk, rvu_rep_get_stats);
+	}
+	err = rvu_rep_napi_init(priv, extack);
+	if (err)
+		goto exit;
+
+	rvu_eswitch_config(priv, true);
+	return 0;
+exit:
+	while (--rep_id >= 0) {
+		rep = priv->reps[rep_id];
+		unregister_netdev(rep->netdev);
+		rvu_rep_devlink_port_unregister(rep);
+		free_netdev(rep->netdev);
+	}
+	kfree(priv->reps);
+	rvu_rep_rsrc_free(priv);
+	return err;
+}
+
+static int rvu_get_rep_cnt(struct otx2_nic *priv)
+{
+	struct get_rep_cnt_rsp *rsp;
+	struct mbox_msghdr *msghdr;
+	struct msg_req *req;
+	int err, rep;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_get_rep_cnt(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return -ENOMEM;
+	}
+	err = otx2_sync_mbox_msg(&priv->mbox);
+	if (err)
+		goto exit;
+
+	msghdr = otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
+	if (IS_ERR(msghdr)) {
+		err = PTR_ERR(msghdr);
+		goto exit;
+	}
+
+	rsp = (struct get_rep_cnt_rsp *)msghdr;
+	priv->hw.tx_queues = rsp->rep_cnt;
+	priv->hw.rx_queues = rsp->rep_cnt;
+	priv->rep_cnt = rsp->rep_cnt;
+	for (rep = 0; rep < priv->rep_cnt; rep++)
+		priv->rep_pf_map[rep] = rsp->rep_pf_map[rep];
+
+exit:
+	mutex_unlock(&priv->mbox.lock);
+	return err;
+}
+
+static int rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct device *dev = &pdev->dev;
+	struct otx2_nic *priv;
+	struct otx2_hw *hw;
+	int err;
+
+	err = pcim_enable_device(pdev);
+	if (err) {
+		dev_err(dev, "Failed to enable PCI device\n");
+		return err;
+	}
+
+	err = pcim_request_all_regions(pdev, DRV_NAME);
+	if (err) {
+		dev_err(dev, "PCI request regions failed 0x%x\n", err);
+		return err;
+	}
+
+	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
+	if (err) {
+		dev_err(dev, "DMA mask config failed, abort\n");
+		goto err_set_drv_data;
+	}
+
+	pci_set_master(pdev);
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv) {
+		err = -ENOMEM;
+		goto err_set_drv_data;
+	}
+
+	pci_set_drvdata(pdev, priv);
+	priv->pdev = pdev;
+	priv->dev = dev;
+	priv->flags |= OTX2_FLAG_INTF_DOWN;
+	priv->flags |= OTX2_FLAG_REP_MODE_ENABLED;
+
+	hw = &priv->hw;
+	hw->pdev = pdev;
+	hw->max_queues = OTX2_MAX_CQ_CNT;
+	hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
+	hw->xqe_size = 128;
+
+	err = otx2_init_rsrc(pdev, priv);
+	if (err)
+		goto err_set_drv_data;
+
+	priv->iommu_domain = iommu_get_domain_for_dev(dev);
+
+	err = rvu_get_rep_cnt(priv);
+	if (err)
+		goto err_detach_rsrc;
+
+	err = otx2_register_dl(priv);
+	if (err)
+		goto err_detach_rsrc;
+
+	return 0;
+
+err_detach_rsrc:
+	if (priv->hw.lmt_info)
+		free_percpu(priv->hw.lmt_info);
+	if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
+		qmem_free(priv->dev, priv->dync_lmt);
+	otx2_detach_resources(&priv->mbox);
+	otx2_disable_mbox_intr(priv);
+	otx2_pfaf_mbox_destroy(priv);
+	pci_free_irq_vectors(pdev);
+err_set_drv_data:
+	pci_set_drvdata(pdev, NULL);
+	return err;
+}
+
+static void rvu_rep_remove(struct pci_dev *pdev)
+{
+	struct otx2_nic *priv = pci_get_drvdata(pdev);
+
+	otx2_unregister_dl(priv);
+	if (!(priv->flags & OTX2_FLAG_INTF_DOWN))
+		rvu_rep_destroy(priv);
+	otx2_detach_resources(&priv->mbox);
+	if (priv->hw.lmt_info)
+		free_percpu(priv->hw.lmt_info);
+	if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
+		qmem_free(priv->dev, priv->dync_lmt);
+	otx2_disable_mbox_intr(priv);
+	otx2_pfaf_mbox_destroy(priv);
+	pci_free_irq_vectors(priv->pdev);
+	pci_set_drvdata(pdev, NULL);
+}
+
+static struct pci_driver rvu_rep_driver = {
+	.name = DRV_NAME,
+	.id_table = rvu_rep_id_table,
+	.probe = rvu_rep_probe,
+	.remove = rvu_rep_remove,
+	.shutdown = rvu_rep_remove,
+};
+
+static int __init rvu_rep_init_module(void)
+{
+	return pci_register_driver(&rvu_rep_driver);
+}
+
+static void __exit rvu_rep_cleanup_module(void)
+{
+	pci_unregister_driver(&rvu_rep_driver);
+}
+
+module_init(rvu_rep_init_module);
+module_exit(rvu_rep_cleanup_module);

linux-7.2.3/drivers/net/ethernet/marvell/octeontx2/nic/rep.h

@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU REPRESENTOR driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#ifndef REP_H
+#define REP_H
+
+#include <linux/pci.h>
+
+#include "otx2_reg.h"
+#include "otx2_txrx.h"
+#include "otx2_common.h"
+
+#define PCI_DEVID_RVU_REP	0xA0E0
+
+#define RVU_MAX_REP	OTX2_MAX_CQ_CNT
+
+struct rep_stats {
+	u64 rx_bytes;
+	u64 rx_frames;
+	u64 rx_drops;
+	u64 rx_mcast_frames;
+
+	u64 tx_bytes;
+	u64 tx_frames;
+	u64 tx_drops;
+	atomic_long_t tx_discards;
+};
+
+struct rep_dev {
+	struct otx2_nic *mdev;
+	struct net_device *netdev;
+	struct rep_stats stats;
+	struct delayed_work stats_wrk;
+	struct devlink_port dl_port;
+	struct otx2_flow_config	*flow_cfg;
+#define RVU_REP_VF_INITIALIZED		BIT_ULL(0)
+	u64 flags;
+	u16 rep_id;
+	u16 pcifunc;
+	u8 mac[ETH_ALEN];
+};
+
+static inline bool otx2_rep_dev(struct pci_dev *pdev)
+{
+	return pdev->device == PCI_DEVID_RVU_REP;
+}
+
+int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack);
+void rvu_rep_destroy(struct otx2_nic *priv);
+int rvu_event_up_notify(struct otx2_nic *pf, struct rep_event *info);
+#endif /* REP_H */