Merge branch 'am65-cpsw-rx-mq'

Roger Quadros says:

====================
net: ethernet: ti: am65-cpsw: Add multi queue RX support

am65-cpsw can support up to 8 queues at Rx. So far we have
been using only one queue (i.e. default flow) for all RX traffic.

This series adds multi-queue support. The driver starts with
1 RX queue by default. User can increase the RX queues via ethtool,
e.g. 'ethtool -L ethx rx <N>'

The series also adds regmap and regfield support to some of the
ALE registers. It adds Policer/Classifier registers and fields.

Converting the existing ALE control APIs to regfields can be a separate
exercise.

Some helper functions are added to read/write to the Policer/Classifier
registers and a default Classifier setup function is added that
routes packets based on their PCP/DSCP priority to different RX queues.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
---
Changes in v4:
- Use single macro AM65_CPSW_MAX_QUEUES for both TX and RX queues
  to simplify code
- reuse am65_cpsw_get/set_per_queue_coalesce for am65_cpsw_get/set_coalesce.
- return -EINVAL if unsupported tx/rx_coalesce_usecs in
  am65_cpsw_set_coalesce.
- reverse Xmas tree declaration order fixes in cpsw_ale
- Link to v3: https://lore.kernel.org/r/20240703-am65-cpsw-multi-rx-v3-0-f11cd860fd72@kernel.org

Changes in v3:
- code style fixes
- squashed patches 5 and 6
- added comment about priority to thread mapping table.
- Added Reviewed-by Simon Horman.
- Link to v2: https://lore.kernel.org/r/20240628-am65-cpsw-multi-rx-v2-0-c399cb77db56@kernel.org

Changes in v2:
- rebase to net/next
- fixed RX stall issue during iperf
- Link to v1: https://lore.kernel.org/r/20240606-am65-cpsw-multi-rx-v1-0-0704b0cb6fdc@kernel.org
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ti/am65-cpsw-ethtool.c

@@ -427,9 +427,9 @@ static void am65_cpsw_get_channels(struct net_device *ndev,
 {
 	struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
 
-	ch->max_rx = AM65_CPSW_MAX_RX_QUEUES;
-	ch->max_tx = AM65_CPSW_MAX_TX_QUEUES;
-	ch->rx_count = AM65_CPSW_MAX_RX_QUEUES;
+	ch->max_rx = AM65_CPSW_MAX_QUEUES;
+	ch->max_tx = AM65_CPSW_MAX_QUEUES;
+	ch->rx_count = common->rx_ch_num_flows;
 	ch->tx_count = common->tx_ch_num;
 }
 
@@ -447,9 +447,8 @@ static int am65_cpsw_set_channels(struct net_device *ndev,
 	if (common->usage_count)
 		return -EBUSY;
 
-	am65_cpsw_nuss_remove_tx_chns(common);
-
-	return am65_cpsw_nuss_update_tx_chns(common, chs->tx_count);
+	return am65_cpsw_nuss_update_tx_rx_chns(common, chs->tx_count,
+						chs->rx_count);
 }
 
 static void
@@ -913,80 +912,64 @@ static void am65_cpsw_get_mm_stats(struct net_device *ndev,
 	s->MACMergeHoldCount = readl(base + AM65_CPSW_STATN_IET_TX_HOLD);
 }
 
-static int am65_cpsw_get_coalesce(struct net_device *ndev, struct ethtool_coalesce *coal,
-				  struct kernel_ethtool_coalesce *kernel_coal,
-				  struct netlink_ext_ack *extack)
-{
-	struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
-	struct am65_cpsw_tx_chn *tx_chn;
-
-	tx_chn = &common->tx_chns[0];
-
-	coal->rx_coalesce_usecs = common->rx_pace_timeout / 1000;
-	coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout / 1000;
-
-	return 0;
-}
-
 static int am65_cpsw_get_per_queue_coalesce(struct net_device *ndev, u32 queue,
 					    struct ethtool_coalesce *coal)
 {
 	struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
+	struct am65_cpsw_rx_flow *rx_flow;
 	struct am65_cpsw_tx_chn *tx_chn;
 
-	if (queue >= AM65_CPSW_MAX_TX_QUEUES)
+	if (queue >= AM65_CPSW_MAX_QUEUES)
 		return -EINVAL;
 
 	tx_chn = &common->tx_chns[queue];
-
 	coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout / 1000;
 
+	rx_flow = &common->rx_chns.flows[queue];
+	coal->rx_coalesce_usecs = rx_flow->rx_pace_timeout / 1000;
+
 	return 0;
 }
 
-static int am65_cpsw_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *coal,
+static int am65_cpsw_get_coalesce(struct net_device *ndev, struct ethtool_coalesce *coal,
 				  struct kernel_ethtool_coalesce *kernel_coal,
 				  struct netlink_ext_ack *extack)
 {
-	struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
-	struct am65_cpsw_tx_chn *tx_chn;
-
-	tx_chn = &common->tx_chns[0];
-
-	if (coal->rx_coalesce_usecs && coal->rx_coalesce_usecs < 20)
-		return -EINVAL;
-
-	if (coal->tx_coalesce_usecs && coal->tx_coalesce_usecs < 20)
-		return -EINVAL;
-
-	common->rx_pace_timeout = coal->rx_coalesce_usecs * 1000;
-	tx_chn->tx_pace_timeout = coal->tx_coalesce_usecs * 1000;
-
-	return 0;
+	return am65_cpsw_get_per_queue_coalesce(ndev, 0, coal);
 }
 
 static int am65_cpsw_set_per_queue_coalesce(struct net_device *ndev, u32 queue,
 					    struct ethtool_coalesce *coal)
 {
 	struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
+	struct am65_cpsw_rx_flow *rx_flow;
 	struct am65_cpsw_tx_chn *tx_chn;
 
-	if (queue >= AM65_CPSW_MAX_TX_QUEUES)
+	if (queue >= AM65_CPSW_MAX_QUEUES)
 		return -EINVAL;
 
 	tx_chn = &common->tx_chns[queue];
-
-	if (coal->tx_coalesce_usecs && coal->tx_coalesce_usecs < 20) {
-		dev_info(common->dev, "defaulting to min value of 20us for tx-usecs for tx-%u\n",
-			 queue);
-		coal->tx_coalesce_usecs = 20;
-	}
+	if (coal->tx_coalesce_usecs && coal->tx_coalesce_usecs < 20)
+		return -EINVAL;
 
 	tx_chn->tx_pace_timeout = coal->tx_coalesce_usecs * 1000;
 
+	rx_flow = &common->rx_chns.flows[queue];
+	if (coal->rx_coalesce_usecs && coal->rx_coalesce_usecs < 20)
+		return -EINVAL;
+
+	rx_flow->rx_pace_timeout = coal->rx_coalesce_usecs * 1000;
+
 	return 0;
 }
 
+static int am65_cpsw_set_coalesce(struct net_device *ndev, struct ethtool_coalesce *coal,
+				  struct kernel_ethtool_coalesce *kernel_coal,
+				  struct netlink_ext_ack *extack)
+{
+	return am65_cpsw_set_per_queue_coalesce(ndev, 0, coal);
+}
+
 const struct ethtool_ops am65_cpsw_ethtool_ops_slave = {
 	.begin			= am65_cpsw_ethtool_op_begin,
 	.complete		= am65_cpsw_ethtool_op_complete,

drivers/net/ethernet/ti/am65-cpsw-nuss.c

@@ -138,7 +138,7 @@
 	 AM65_CPSW_PN_TS_CTL_RX_ANX_F_EN)
 
 #define AM65_CPSW_ALE_AGEOUT_DEFAULT	30
-/* Number of TX/RX descriptors */
+/* Number of TX/RX descriptors per channel/flow */
 #define AM65_CPSW_MAX_TX_DESC	500
 #define AM65_CPSW_MAX_RX_DESC	500
 
@@ -150,6 +150,7 @@
 			 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
 
 #define AM65_CPSW_DEFAULT_TX_CHNS	8
+#define AM65_CPSW_DEFAULT_RX_CHN_FLOWS	1
 
 /* CPPI streaming packet interface */
 #define AM65_CPSW_CPPI_TX_FLOW_ID  0x3FFF
@@ -331,7 +332,7 @@ static void am65_cpsw_nuss_ndo_host_tx_timeout(struct net_device *ndev,
 }
 
 static int am65_cpsw_nuss_rx_push(struct am65_cpsw_common *common,
-				  struct page *page)
+				  struct page *page, u32 flow_idx)
 {
 	struct am65_cpsw_rx_chn *rx_chn = &common->rx_chns;
 	struct cppi5_host_desc_t *desc_rx;
@@ -364,7 +365,8 @@ static int am65_cpsw_nuss_rx_push(struct am65_cpsw_common *common,
 	swdata = cppi5_hdesc_get_swdata(desc_rx);
 	*((void **)swdata) = page_address(page);
 
-	return k3_udma_glue_push_rx_chn(rx_chn->rx_chn, 0, desc_rx, desc_dma);
+	return k3_udma_glue_push_rx_chn(rx_chn->rx_chn, flow_idx,
+					desc_rx, desc_dma);
 }
 
 void am65_cpsw_nuss_set_p0_ptype(struct am65_cpsw_common *common)
@@ -399,22 +401,27 @@ static void am65_cpsw_init_port_emac_ale(struct am65_cpsw_port *port);
 static void am65_cpsw_destroy_xdp_rxqs(struct am65_cpsw_common *common)
 {
 	struct am65_cpsw_rx_chn *rx_chn = &common->rx_chns;
+	struct am65_cpsw_rx_flow *flow;
 	struct xdp_rxq_info *rxq;
-	int i;
+	int id, port;
 
-	for (i = 0; i < common->port_num; i++) {
-		if (!common->ports[i].ndev)
-			continue;
+	for (id = 0; id < common->rx_ch_num_flows; id++) {
+		flow = &rx_chn->flows[id];
 
-		rxq = &common->ports[i].xdp_rxq;
+		for (port = 0; port < common->port_num; port++) {
+			if (!common->ports[port].ndev)
+				continue;
 
-		if (xdp_rxq_info_is_reg(rxq))
-			xdp_rxq_info_unreg(rxq);
-	}
+			rxq = &common->ports[port].xdp_rxq[id];
+
+			if (xdp_rxq_info_is_reg(rxq))
+				xdp_rxq_info_unreg(rxq);
+		}
 
-	if (rx_chn->page_pool) {
-		page_pool_destroy(rx_chn->page_pool);
-		rx_chn->page_pool = NULL;
+		if (flow->page_pool) {
+			page_pool_destroy(flow->page_pool);
+			flow->page_pool = NULL;
+		}
 	}
 }
 
@@ -428,31 +435,44 @@ static int am65_cpsw_create_xdp_rxqs(struct am65_cpsw_common *common)
 		.nid = dev_to_node(common->dev),
 		.dev = common->dev,
 		.dma_dir = DMA_BIDIRECTIONAL,
-		.napi = &common->napi_rx,
+		/* .napi set dynamically */
 	};
+	struct am65_cpsw_rx_flow *flow;
 	struct xdp_rxq_info *rxq;
 	struct page_pool *pool;
-	int i, ret;
-
-	pool = page_pool_create(&pp_params);
-	if (IS_ERR(pool))
-		return PTR_ERR(pool);
+	int id, port, ret;
+
+	for (id = 0; id < common->rx_ch_num_flows; id++) {
+		flow = &rx_chn->flows[id];
+		pp_params.napi = &flow->napi_rx;
+		pool = page_pool_create(&pp_params);
+		if (IS_ERR(pool)) {
+			ret = PTR_ERR(pool);
+			goto err;
+		}
 
-	rx_chn->page_pool = pool;
+		flow->page_pool = pool;
 
-	for (i = 0; i < common->port_num; i++) {
-		if (!common->ports[i].ndev)
-			continue;
+		/* using same page pool is allowed as no running rx handlers
+		 * simultaneously for both ndevs
+		 */
+		for (port = 0; port < common->port_num; port++) {
+			if (!common->ports[port].ndev)
+				continue;
 
-		rxq = &common->ports[i].xdp_rxq;
+			rxq = &common->ports[port].xdp_rxq[id];
 
-		ret = xdp_rxq_info_reg(rxq, common->ports[i].ndev, i, 0);
-		if (ret)
-			goto err;
+			ret = xdp_rxq_info_reg(rxq, common->ports[port].ndev,
+					       id, flow->napi_rx.napi_id);
+			if (ret)
+				goto err;
 
-		ret = xdp_rxq_info_reg_mem_model(rxq, MEM_TYPE_PAGE_POOL, pool);
-		if (ret)
-			goto err;
+			ret = xdp_rxq_info_reg_mem_model(rxq,
+							 MEM_TYPE_PAGE_POOL,
+							 pool);
+			if (ret)
+				goto err;
+		}
 	}
 
 	return 0;
@@ -497,25 +517,27 @@ static enum am65_cpsw_tx_buf_type am65_cpsw_nuss_buf_type(struct am65_cpsw_tx_ch
 								       desc_idx);
 }
 
-static inline void am65_cpsw_put_page(struct am65_cpsw_rx_chn *rx_chn,
+static inline void am65_cpsw_put_page(struct am65_cpsw_rx_flow *flow,
 				      struct page *page,
 				      bool allow_direct,
 				      int desc_idx)
 {
-	page_pool_put_full_page(rx_chn->page_pool, page, allow_direct);
-	rx_chn->pages[desc_idx] = NULL;
+	page_pool_put_full_page(flow->page_pool, page, allow_direct);
+	flow->pages[desc_idx] = NULL;
 }
 
 static void am65_cpsw_nuss_rx_cleanup(void *data, dma_addr_t desc_dma)
 {
-	struct am65_cpsw_rx_chn *rx_chn = data;
+	struct am65_cpsw_rx_flow *flow = data;
 	struct cppi5_host_desc_t *desc_rx;
+	struct am65_cpsw_rx_chn *rx_chn;
 	dma_addr_t buf_dma;
 	u32 buf_dma_len;
 	void *page_addr;
 	void **swdata;
 	int desc_idx;
 
+	rx_chn = &flow->common->rx_chns;
 	desc_rx = k3_cppi_desc_pool_dma2virt(rx_chn->desc_pool, desc_dma);
 	swdata = cppi5_hdesc_get_swdata(desc_rx);
 	page_addr = *swdata;
@@ -526,7 +548,7 @@ static void am65_cpsw_nuss_rx_cleanup(void *data, dma_addr_t desc_dma)
 
 	desc_idx = am65_cpsw_nuss_desc_idx(rx_chn->desc_pool, desc_rx,
 					   rx_chn->dsize_log2);
-	am65_cpsw_put_page(rx_chn, virt_to_page(page_addr), false, desc_idx);
+	am65_cpsw_put_page(flow, virt_to_page(page_addr), false, desc_idx);
 }
 
 static void am65_cpsw_nuss_xmit_free(struct am65_cpsw_tx_chn *tx_chn,
@@ -602,7 +624,8 @@ static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common)
 	struct am65_cpsw_host *host_p = am65_common_get_host(common);
 	struct am65_cpsw_rx_chn *rx_chn = &common->rx_chns;
 	struct am65_cpsw_tx_chn *tx_chn = common->tx_chns;
-	int port_idx, i, ret, tx;
+	int port_idx, i, ret, tx, flow_idx;
+	struct am65_cpsw_rx_flow *flow;
 	u32 val, port_mask;
 	struct page *page;
 
@@ -670,27 +693,26 @@ static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common)
 		return ret;
 	}
 
-	for (i = 0; i < rx_chn->descs_num; i++) {
-		page = page_pool_dev_alloc_pages(rx_chn->page_pool);
-		if (!page) {
-			ret = -ENOMEM;
-			if (i)
+	for (flow_idx = 0; flow_idx < common->rx_ch_num_flows; flow_idx++) {
+		flow = &rx_chn->flows[flow_idx];
+		for (i = 0; i < AM65_CPSW_MAX_RX_DESC; i++) {
+			page = page_pool_dev_alloc_pages(flow->page_pool);
+			if (!page) {
+				dev_err(common->dev, "cannot allocate page in flow %d\n",
+					flow_idx);
+				ret = -ENOMEM;
 				goto fail_rx;
+			}
+			flow->pages[i] = page;
 
-			return ret;
-		}
-		rx_chn->pages[i] = page;
-
-		ret = am65_cpsw_nuss_rx_push(common, page);
-		if (ret < 0) {
-			dev_err(common->dev,
-				"cannot submit page to channel rx: %d\n",
-				ret);
-			am65_cpsw_put_page(rx_chn, page, false, i);
-			if (i)
+			ret = am65_cpsw_nuss_rx_push(common, page, flow_idx);
+			if (ret < 0) {
+				dev_err(common->dev,
+					"cannot submit page to rx channel flow %d, error %d\n",
+					flow_idx, ret);
+				am65_cpsw_put_page(flow, page, false, i);
 				goto fail_rx;
-
-			return ret;
+			}
 		}
 	}
 
@@ -700,6 +722,14 @@ static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common)
 		goto fail_rx;
 	}
 
+	for (i = 0; i < common->rx_ch_num_flows ; i++) {
+		napi_enable(&rx_chn->flows[i].napi_rx);
+		if (rx_chn->flows[i].irq_disabled) {
+			rx_chn->flows[i].irq_disabled = false;
+			enable_irq(rx_chn->flows[i].irq);
+		}
+	}
+
 	for (tx = 0; tx < common->tx_ch_num; tx++) {
 		ret = k3_udma_glue_enable_tx_chn(tx_chn[tx].tx_chn);
 		if (ret) {
@@ -711,12 +741,6 @@ static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common)
 		napi_enable(&tx_chn[tx].napi_tx);
 	}
 
-	napi_enable(&common->napi_rx);
-	if (common->rx_irq_disabled) {
-		common->rx_irq_disabled = false;
-		enable_irq(rx_chn->irq);
-	}
-
 	dev_dbg(common->dev, "cpsw_nuss started\n");
 	return 0;
 
@@ -727,11 +751,24 @@ static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common)
 		tx--;
 	}
 
+	for (flow_idx = 0; i < common->rx_ch_num_flows; flow_idx++) {
+		flow = &rx_chn->flows[flow_idx];
+		if (!flow->irq_disabled) {
+			disable_irq(flow->irq);
+			flow->irq_disabled = true;
+		}
+		napi_disable(&flow->napi_rx);
+	}
+
 	k3_udma_glue_disable_rx_chn(rx_chn->rx_chn);
 
 fail_rx:
-	k3_udma_glue_reset_rx_chn(rx_chn->rx_chn, 0, rx_chn,
-				  am65_cpsw_nuss_rx_cleanup, 0);
+	for (i = 0; i < common->rx_ch_num_flows; i--)
+		k3_udma_glue_reset_rx_chn(rx_chn->rx_chn, i, &rx_chn->flows[i],
+					  am65_cpsw_nuss_rx_cleanup, 0);
+
+	am65_cpsw_destroy_xdp_rxqs(common);
+
 	return ret;
 }
 
@@ -780,12 +817,12 @@ static int am65_cpsw_nuss_common_stop(struct am65_cpsw_common *common)
 			dev_err(common->dev, "rx teardown timeout\n");
 	}
 
-	napi_disable(&common->napi_rx);
-	hrtimer_cancel(&common->rx_hrtimer);
-
-	for (i = 0; i < AM65_CPSW_MAX_RX_FLOWS; i++)
-		k3_udma_glue_reset_rx_chn(rx_chn->rx_chn, i, rx_chn,
-					  am65_cpsw_nuss_rx_cleanup, !!i);
+	for (i = 0; i < common->rx_ch_num_flows; i++) {
+		napi_disable(&rx_chn->flows[i].napi_rx);
+		hrtimer_cancel(&rx_chn->flows[i].rx_hrtimer);
+		k3_udma_glue_reset_rx_chn(rx_chn->rx_chn, i, &rx_chn->flows[i],
+					  am65_cpsw_nuss_rx_cleanup, 0);
+	}
 
 	k3_udma_glue_disable_rx_chn(rx_chn->rx_chn);
 
@@ -794,10 +831,6 @@ static int am65_cpsw_nuss_common_stop(struct am65_cpsw_common *common)
 	writel(0, common->cpsw_base + AM65_CPSW_REG_CTL);
 	writel(0, common->cpsw_base + AM65_CPSW_REG_STAT_PORT_EN);
 
-	for (i = 0; i < rx_chn->descs_num; i++) {
-		if (rx_chn->pages[i])
-			am65_cpsw_put_page(rx_chn, rx_chn->pages[i], false, i);
-	}
 	am65_cpsw_destroy_xdp_rxqs(common);
 
 	dev_dbg(common->dev, "cpsw_nuss stopped\n");
@@ -868,7 +901,7 @@ static int am65_cpsw_nuss_ndo_slave_open(struct net_device *ndev)
 		goto runtime_put;
 	}
 
-	ret = netif_set_real_num_rx_queues(ndev, AM65_CPSW_MAX_RX_QUEUES);
+	ret = netif_set_real_num_rx_queues(ndev, common->rx_ch_num_flows);
 	if (ret) {
 		dev_err(common->dev, "cannot set real number of rx queues\n");
 		goto runtime_put;
@@ -992,12 +1025,12 @@ static int am65_cpsw_xdp_tx_frame(struct net_device *ndev,
 	return ret;
 }
 
-static int am65_cpsw_run_xdp(struct am65_cpsw_common *common,
+static int am65_cpsw_run_xdp(struct am65_cpsw_rx_flow *flow,
 			     struct am65_cpsw_port *port,
 			     struct xdp_buff *xdp,
 			     int desc_idx, int cpu, int *len)
 {
-	struct am65_cpsw_rx_chn *rx_chn = &common->rx_chns;
+	struct am65_cpsw_common *common = flow->common;
 	struct am65_cpsw_ndev_priv *ndev_priv;
 	struct net_device *ndev = port->ndev;
 	struct am65_cpsw_ndev_stats *stats;
@@ -1026,7 +1059,7 @@ static int am65_cpsw_run_xdp(struct am65_cpsw_common *common,
 		ret = AM65_CPSW_XDP_PASS;
 		goto out;
 	case XDP_TX:
-		tx_chn = &common->tx_chns[cpu % AM65_CPSW_MAX_TX_QUEUES];
+		tx_chn = &common->tx_chns[cpu % AM65_CPSW_MAX_QUEUES];
 		netif_txq = netdev_get_tx_queue(ndev, tx_chn->id);
 
 		xdpf = xdp_convert_buff_to_frame(xdp);
@@ -1068,7 +1101,8 @@ static int am65_cpsw_run_xdp(struct am65_cpsw_common *common,
 	}
 
 	page = virt_to_head_page(xdp->data);
-	am65_cpsw_put_page(rx_chn, page, true, desc_idx);
+	am65_cpsw_put_page(flow, page, true, desc_idx);
+
 out:
 	return ret;
 }
@@ -1106,11 +1140,12 @@ static void am65_cpsw_nuss_rx_csum(struct sk_buff *skb, u32 csum_info)
 	}
 }
 
-static int am65_cpsw_nuss_rx_packets(struct am65_cpsw_common *common,
-				     u32 flow_idx, int cpu, int *xdp_state)
+static int am65_cpsw_nuss_rx_packets(struct am65_cpsw_rx_flow *flow,
+				     int cpu, int *xdp_state)
 {
-	struct am65_cpsw_rx_chn *rx_chn = &common->rx_chns;
+	struct am65_cpsw_rx_chn *rx_chn = &flow->common->rx_chns;
 	u32 buf_dma_len, pkt_len, port_id = 0, csum_info;
+	struct am65_cpsw_common *common = flow->common;
 	struct am65_cpsw_ndev_priv *ndev_priv;
 	struct am65_cpsw_ndev_stats *stats;
 	struct cppi5_host_desc_t *desc_rx;
@@ -1120,6 +1155,7 @@ static int am65_cpsw_nuss_rx_packets(struct am65_cpsw_common *common,
 	struct am65_cpsw_port *port;
 	int headroom, desc_idx, ret;
 	struct net_device *ndev;
+	u32 flow_idx = flow->id;
 	struct sk_buff *skb;
 	struct xdp_buff	xdp;
 	void *page_addr;
@@ -1174,10 +1210,10 @@ static int am65_cpsw_nuss_rx_packets(struct am65_cpsw_common *common,
 	}
 
 	if (port->xdp_prog) {
-		xdp_init_buff(&xdp, PAGE_SIZE, &port->xdp_rxq);
+		xdp_init_buff(&xdp, PAGE_SIZE, &port->xdp_rxq[flow->id]);
 		xdp_prepare_buff(&xdp, page_addr, AM65_CPSW_HEADROOM,
 				 pkt_len, false);
-		*xdp_state = am65_cpsw_run_xdp(common, port, &xdp, desc_idx,
+		*xdp_state = am65_cpsw_run_xdp(flow, port, &xdp, desc_idx,
 					       cpu, &pkt_len);
 		if (*xdp_state != AM65_CPSW_XDP_PASS)
 			goto allocate;
@@ -1195,7 +1231,7 @@ static int am65_cpsw_nuss_rx_packets(struct am65_cpsw_common *common,
 	skb_mark_for_recycle(skb);
 	skb->protocol = eth_type_trans(skb, ndev);
 	am65_cpsw_nuss_rx_csum(skb, csum_info);
-	napi_gro_receive(&common->napi_rx, skb);
+	napi_gro_receive(&flow->napi_rx, skb);
 
 	stats = this_cpu_ptr(ndev_priv->stats);
 
@@ -1205,24 +1241,24 @@ static int am65_cpsw_nuss_rx_packets(struct am65_cpsw_common *common,
 	u64_stats_update_end(&stats->syncp);
 
 allocate:
-	new_page = page_pool_dev_alloc_pages(rx_chn->page_pool);
+	new_page = page_pool_dev_alloc_pages(flow->page_pool);
 	if (unlikely(!new_page)) {
 		dev_err(dev, "page alloc failed\n");
 		return -ENOMEM;
 	}
 
-	rx_chn->pages[desc_idx] = new_page;
+	flow->pages[desc_idx] = new_page;
 
 	if (netif_dormant(ndev)) {
-		am65_cpsw_put_page(rx_chn, new_page, true, desc_idx);
+		am65_cpsw_put_page(flow, new_page, true, desc_idx);
 		ndev->stats.rx_dropped++;
 		return 0;
 	}
 
 requeue:
-	ret = am65_cpsw_nuss_rx_push(common, new_page);
+	ret = am65_cpsw_nuss_rx_push(common, new_page, flow_idx);
 	if (WARN_ON(ret < 0)) {
-		am65_cpsw_put_page(rx_chn, new_page, true, desc_idx);
+		am65_cpsw_put_page(flow, new_page, true, desc_idx);
 		ndev->stats.rx_errors++;
 		ndev->stats.rx_dropped++;
 	}
@@ -1232,38 +1268,32 @@ static int am65_cpsw_nuss_rx_packets(struct am65_cpsw_common *common,
 
 static enum hrtimer_restart am65_cpsw_nuss_rx_timer_callback(struct hrtimer *timer)
 {
-	struct am65_cpsw_common *common =
-			container_of(timer, struct am65_cpsw_common, rx_hrtimer);
+	struct am65_cpsw_rx_flow *flow = container_of(timer,
+						      struct am65_cpsw_rx_flow,
+						      rx_hrtimer);
 
-	enable_irq(common->rx_chns.irq);
+	enable_irq(flow->irq);
 	return HRTIMER_NORESTART;
 }
 
 static int am65_cpsw_nuss_rx_poll(struct napi_struct *napi_rx, int budget)
 {
-	struct am65_cpsw_common *common = am65_cpsw_napi_to_common(napi_rx);
-	int flow = AM65_CPSW_MAX_RX_FLOWS;
+	struct am65_cpsw_rx_flow *flow = am65_cpsw_napi_to_rx_flow(napi_rx);
+	struct am65_cpsw_common *common = flow->common;
 	int cpu = smp_processor_id();
 	int xdp_state_or = 0;
 	int cur_budget, ret;
 	int xdp_state;
 	int num_rx = 0;
 
-	/* process every flow */
-	while (flow--) {
-		cur_budget = budget - num_rx;
-
-		while (cur_budget--) {
-			ret = am65_cpsw_nuss_rx_packets(common, flow, cpu,
-							&xdp_state);
-			xdp_state_or |= xdp_state;
-			if (ret)
-				break;
-			num_rx++;
-		}
-
-		if (num_rx >= budget)
+	/* process only this flow */
+	cur_budget = budget;
+	while (cur_budget--) {
+		ret = am65_cpsw_nuss_rx_packets(flow, cpu, &xdp_state);
+		xdp_state_or |= xdp_state;
+		if (ret)
 			break;
+		num_rx++;
 	}
 
 	if (xdp_state_or & AM65_CPSW_XDP_REDIRECT)
@@ -1272,14 +1302,14 @@ static int am65_cpsw_nuss_rx_poll(struct napi_struct *napi_rx, int budget)
 	dev_dbg(common->dev, "%s num_rx:%d %d\n", __func__, num_rx, budget);
 
 	if (num_rx < budget && napi_complete_done(napi_rx, num_rx)) {
-		if (common->rx_irq_disabled) {
-			common->rx_irq_disabled = false;
-			if (unlikely(common->rx_pace_timeout)) {
-				hrtimer_start(&common->rx_hrtimer,
-					      ns_to_ktime(common->rx_pace_timeout),
+		if (flow->irq_disabled) {
+			flow->irq_disabled = false;
+			if (unlikely(flow->rx_pace_timeout)) {
+				hrtimer_start(&flow->rx_hrtimer,
+					      ns_to_ktime(flow->rx_pace_timeout),
 					      HRTIMER_MODE_REL_PINNED);
 			} else {
-				enable_irq(common->rx_chns.irq);
+				enable_irq(flow->irq);
 			}
 		}
 	}
@@ -1527,11 +1557,11 @@ static int am65_cpsw_nuss_tx_poll(struct napi_struct *napi_tx, int budget)
 
 static irqreturn_t am65_cpsw_nuss_rx_irq(int irq, void *dev_id)
 {
-	struct am65_cpsw_common *common = dev_id;
+	struct am65_cpsw_rx_flow *flow = dev_id;
 
-	common->rx_irq_disabled = true;
+	flow->irq_disabled = true;
 	disable_irq_nosync(irq);
-	napi_schedule(&common->napi_rx);
+	napi_schedule(&flow->napi_rx);
 
 	return IRQ_HANDLED;
 }
@@ -2176,7 +2206,7 @@ static void am65_cpsw_nuss_free_tx_chns(void *data)
 	}
 }
 
-void am65_cpsw_nuss_remove_tx_chns(struct am65_cpsw_common *common)
+static void am65_cpsw_nuss_remove_tx_chns(struct am65_cpsw_common *common)
 {
 	struct device *dev = common->dev;
 	int i;
@@ -2191,15 +2221,9 @@ void am65_cpsw_nuss_remove_tx_chns(struct am65_cpsw_common *common)
 			devm_free_irq(dev, tx_chn->irq, tx_chn);
 
 		netif_napi_del(&tx_chn->napi_tx);
-
-		if (!IS_ERR_OR_NULL(tx_chn->desc_pool))
-			k3_cppi_desc_pool_destroy(tx_chn->desc_pool);
-
-		if (!IS_ERR_OR_NULL(tx_chn->tx_chn))
-			k3_udma_glue_release_tx_chn(tx_chn->tx_chn);
-
-		memset(tx_chn, 0, sizeof(*tx_chn));
 	}
+
+	am65_cpsw_nuss_free_tx_chns(common);
 }
 
 static int am65_cpsw_nuss_ndev_add_tx_napi(struct am65_cpsw_common *common)
@@ -2331,19 +2355,22 @@ static void am65_cpsw_nuss_free_rx_chns(void *data)
 		k3_udma_glue_release_rx_chn(rx_chn->rx_chn);
 }
 
-static void am65_cpsw_nuss_remove_rx_chns(void *data)
+static void am65_cpsw_nuss_remove_rx_chns(struct am65_cpsw_common *common)
 {
-	struct am65_cpsw_common *common = data;
 	struct device *dev = common->dev;
 	struct am65_cpsw_rx_chn *rx_chn;
+	struct am65_cpsw_rx_flow *flows;
+	int i;
 
 	rx_chn = &common->rx_chns;
+	flows = rx_chn->flows;
 	devm_remove_action(dev, am65_cpsw_nuss_free_rx_chns, common);
 
-	if (!(rx_chn->irq < 0))
-		devm_free_irq(dev, rx_chn->irq, common);
-
-	netif_napi_del(&common->napi_rx);
+	for (i = 0; i < common->rx_ch_num_flows; i++) {
+		if (!(flows[i].irq < 0))
+			devm_free_irq(dev, flows[i].irq, &flows[i]);
+		netif_napi_del(&flows[i].napi_rx);
+	}
 
 	am65_cpsw_nuss_free_rx_chns(common);
 
@@ -2356,6 +2383,7 @@ static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common)
 	struct k3_udma_glue_rx_channel_cfg rx_cfg = { 0 };
 	u32  max_desc_num = AM65_CPSW_MAX_RX_DESC;
 	struct device *dev = common->dev;
+	struct am65_cpsw_rx_flow *flow;
 	u32 hdesc_size, hdesc_size_out;
 	u32 fdqring_id;
 	int i, ret = 0;
@@ -2364,12 +2392,21 @@ static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common)
 					   AM65_CPSW_NAV_SW_DATA_SIZE);
 
 	rx_cfg.swdata_size = AM65_CPSW_NAV_SW_DATA_SIZE;
-	rx_cfg.flow_id_num = AM65_CPSW_MAX_RX_FLOWS;
+	rx_cfg.flow_id_num = common->rx_ch_num_flows;
 	rx_cfg.flow_id_base = common->rx_flow_id_base;
 
 	/* init all flows */
 	rx_chn->dev = dev;
-	rx_chn->descs_num = max_desc_num;
+	rx_chn->descs_num = max_desc_num * rx_cfg.flow_id_num;
+
+	for (i = 0; i < common->rx_ch_num_flows; i++) {
+		flow = &rx_chn->flows[i];
+		flow->page_pool = NULL;
+		flow->pages = devm_kcalloc(dev, AM65_CPSW_MAX_RX_DESC,
+					   sizeof(*flow->pages), GFP_KERNEL);
+		if (!flow->pages)
+			return -ENOMEM;
+	}
 
 	rx_chn->rx_chn = k3_udma_glue_request_rx_chn(dev, "rx", &rx_cfg);
 	if (IS_ERR(rx_chn->rx_chn)) {
@@ -2392,13 +2429,6 @@ static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common)
 	rx_chn->dsize_log2 = __fls(hdesc_size_out);
 	WARN_ON(hdesc_size_out != (1 << rx_chn->dsize_log2));
 
-	rx_chn->page_pool = NULL;
-
-	rx_chn->pages = devm_kcalloc(dev, rx_chn->descs_num,
-				     sizeof(*rx_chn->pages), GFP_KERNEL);
-	if (!rx_chn->pages)
-		return -ENOMEM;
-
 	common->rx_flow_id_base =
 			k3_udma_glue_rx_get_flow_id_base(rx_chn->rx_chn);
 	dev_info(dev, "set new flow-id-base %u\n", common->rx_flow_id_base);
@@ -2422,6 +2452,10 @@ static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common)
 				K3_UDMA_GLUE_SRC_TAG_LO_USE_REMOTE_SRC_TAG,
 		};
 
+		flow = &rx_chn->flows[i];
+		flow->id = i;
+		flow->common = common;
+
 		rx_flow_cfg.ring_rxfdq0_id = fdqring_id;
 		rx_flow_cfg.rx_cfg.size = max_desc_num;
 		rx_flow_cfg.rxfdq_cfg.size = max_desc_num;
@@ -2438,30 +2472,37 @@ static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common)
 				k3_udma_glue_rx_flow_get_fdq_id(rx_chn->rx_chn,
 								i);
 
-		rx_chn->irq = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i);
-
-		if (rx_chn->irq < 0) {
+		flow->irq = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i);
+		if (flow->irq <= 0) {
 			dev_err(dev, "Failed to get rx dma irq %d\n",
-				rx_chn->irq);
-			ret = rx_chn->irq;
+				flow->irq);
+			ret = flow->irq;
 			goto err;
 		}
-	}
-
-	netif_napi_add(common->dma_ndev, &common->napi_rx,
-		       am65_cpsw_nuss_rx_poll);
-	hrtimer_init(&common->rx_hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_PINNED);
-	common->rx_hrtimer.function = &am65_cpsw_nuss_rx_timer_callback;
 
-	ret = devm_request_irq(dev, rx_chn->irq,
-			       am65_cpsw_nuss_rx_irq,
-			       IRQF_TRIGGER_HIGH, dev_name(dev), common);
-	if (ret) {
-		dev_err(dev, "failure requesting rx irq %u, %d\n",
-			rx_chn->irq, ret);
-		goto err;
+		snprintf(flow->name,
+			 sizeof(flow->name), "%s-rx%d",
+			 dev_name(dev), i);
+		netif_napi_add(common->dma_ndev, &flow->napi_rx,
+			       am65_cpsw_nuss_rx_poll);
+		hrtimer_init(&flow->rx_hrtimer, CLOCK_MONOTONIC,
+			     HRTIMER_MODE_REL_PINNED);
+		flow->rx_hrtimer.function = &am65_cpsw_nuss_rx_timer_callback;
+
+		ret = devm_request_irq(dev, flow->irq,
+				       am65_cpsw_nuss_rx_irq,
+				       IRQF_TRIGGER_HIGH,
+				       flow->name, flow);
+		if (ret) {
+			dev_err(dev, "failure requesting rx %d irq %u, %d\n",
+				i, flow->irq, ret);
+			goto err;
+		}
 	}
 
+	/* setup classifier to route priorities to flows */
+	cpsw_ale_classifier_setup_default(common->ale, common->rx_ch_num_flows);
+
 err:
 	i = devm_add_action(dev, am65_cpsw_nuss_free_rx_chns, common);
 	if (i) {
@@ -2705,8 +2746,8 @@ am65_cpsw_nuss_init_port_ndev(struct am65_cpsw_common *common, u32 port_idx)
 	/* alloc netdev */
 	port->ndev = devm_alloc_etherdev_mqs(common->dev,
 					     sizeof(struct am65_cpsw_ndev_priv),
-					     AM65_CPSW_MAX_TX_QUEUES,
-					     AM65_CPSW_MAX_RX_QUEUES);
+					     AM65_CPSW_MAX_QUEUES,
+					     AM65_CPSW_MAX_QUEUES);
 	if (!port->ndev) {
 		dev_err(dev, "error allocating slave net_device %u\n",
 			port->port_id);
@@ -3303,9 +3344,10 @@ static int am65_cpsw_nuss_register_ndevs(struct am65_cpsw_common *common)
 		k3_udma_glue_disable_tx_chn(tx_chan[i].tx_chn);
 	}
 
-	for (i = 0; i < AM65_CPSW_MAX_RX_FLOWS; i++)
-		k3_udma_glue_reset_rx_chn(rx_chan->rx_chn, i, rx_chan,
-					  am65_cpsw_nuss_rx_cleanup, !!i);
+	for (i = 0; i < common->rx_ch_num_flows; i++)
+		k3_udma_glue_reset_rx_chn(rx_chan->rx_chn, i,
+					  &rx_chan->flows[i],
+					  am65_cpsw_nuss_rx_cleanup, 0);
 
 	k3_udma_glue_disable_rx_chn(rx_chan->rx_chn);
 
@@ -3346,12 +3388,21 @@ static int am65_cpsw_nuss_register_ndevs(struct am65_cpsw_common *common)
 	return ret;
 }
 
-int am65_cpsw_nuss_update_tx_chns(struct am65_cpsw_common *common, int num_tx)
+int am65_cpsw_nuss_update_tx_rx_chns(struct am65_cpsw_common *common,
+				     int num_tx, int num_rx)
 {
 	int ret;
 
+	am65_cpsw_nuss_remove_tx_chns(common);
+	am65_cpsw_nuss_remove_rx_chns(common);
+
 	common->tx_ch_num = num_tx;
+	common->rx_ch_num_flows = num_rx;
 	ret = am65_cpsw_nuss_init_tx_chns(common);
+	if (ret)
+		return ret;
+
+	ret = am65_cpsw_nuss_init_rx_chns(common);
 
 	return ret;
 }
@@ -3481,6 +3532,7 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
 	common->rx_flow_id_base = -1;
 	init_completion(&common->tdown_complete);
 	common->tx_ch_num = AM65_CPSW_DEFAULT_TX_CHNS;
+	common->rx_ch_num_flows = AM65_CPSW_DEFAULT_RX_CHN_FLOWS;
 	common->pf_p0_rx_ptype_rrobin = false;
 	common->default_vlan = 1;
 
@@ -3672,8 +3724,10 @@ static int am65_cpsw_nuss_resume(struct device *dev)
 		return ret;
 
 	/* If RX IRQ was disabled before suspend, keep it disabled */
-	if (common->rx_irq_disabled)
-		disable_irq(common->rx_chns.irq);
+	for (i = 0; i < common->rx_ch_num_flows; i++) {
+		if (common->rx_chns.flows[i].irq_disabled)
+			disable_irq(common->rx_chns.flows[i].irq);
+	}
 
 	am65_cpts_resume(common->cpts);
 

drivers/net/ethernet/ti/am65-cpsw-nuss.h

@@ -21,9 +21,7 @@ struct am65_cpts;
 
 #define HOST_PORT_NUM		0
 
-#define AM65_CPSW_MAX_TX_QUEUES	8
-#define AM65_CPSW_MAX_RX_QUEUES	1
-#define AM65_CPSW_MAX_RX_FLOWS	1
+#define AM65_CPSW_MAX_QUEUES	8	/* both TX & RX */
 
 #define AM65_CPSW_PORT_VLAN_REG_OFFSET	0x014
 
@@ -58,7 +56,7 @@ struct am65_cpsw_port {
 	struct am65_cpsw_qos		qos;
 	struct devlink_port		devlink_port;
 	struct bpf_prog			*xdp_prog;
-	struct xdp_rxq_info		xdp_rxq;
+	struct xdp_rxq_info		xdp_rxq[AM65_CPSW_MAX_QUEUES];
 	/* Only for suspend resume context */
 	u32				vid_context;
 };
@@ -94,16 +92,27 @@ struct am65_cpsw_tx_chn {
 	u32 rate_mbps;
 };
 
+struct am65_cpsw_rx_flow {
+	u32 id;
+	struct napi_struct napi_rx;
+	struct am65_cpsw_common	*common;
+	int irq;
+	bool irq_disabled;
+	struct hrtimer rx_hrtimer;
+	unsigned long rx_pace_timeout;
+	struct page_pool *page_pool;
+	struct page **pages;
+	char name[32];
+};
+
 struct am65_cpsw_rx_chn {
 	struct device *dev;
 	struct device *dma_dev;
 	struct k3_cppi_desc_pool *desc_pool;
 	struct k3_udma_glue_rx_channel *rx_chn;
-	struct page_pool *page_pool;
-	struct page **pages;
 	u32 descs_num;
 	unsigned char dsize_log2;
-	int irq;
+	struct am65_cpsw_rx_flow flows[AM65_CPSW_MAX_QUEUES];
 };
 
 #define AM65_CPSW_QUIRK_I2027_NO_TX_CSUM BIT(0)
@@ -145,16 +154,12 @@ struct am65_cpsw_common {
 	u32			tx_ch_rate_msk;
 	u32			rx_flow_id_base;
 
-	struct am65_cpsw_tx_chn	tx_chns[AM65_CPSW_MAX_TX_QUEUES];
+	struct am65_cpsw_tx_chn	tx_chns[AM65_CPSW_MAX_QUEUES];
 	struct completion	tdown_complete;
 	atomic_t		tdown_cnt;
 
+	int			rx_ch_num_flows;
 	struct am65_cpsw_rx_chn	rx_chns;
-	struct napi_struct	napi_rx;
-
-	bool			rx_irq_disabled;
-	struct hrtimer		rx_hrtimer;
-	unsigned long		rx_pace_timeout;
 
 	u32			nuss_ver;
 	u32			cpsw_ver;
@@ -203,8 +208,8 @@ struct am65_cpsw_ndev_priv {
 #define am65_common_get_host(common) (&(common)->host)
 #define am65_common_get_port(common, id) (&(common)->ports[(id) - 1])
 
-#define am65_cpsw_napi_to_common(pnapi) \
-	container_of(pnapi, struct am65_cpsw_common, napi_rx)
+#define am65_cpsw_napi_to_rx_flow(pnapi) \
+	container_of(pnapi, struct am65_cpsw_rx_flow, napi_rx)
 #define am65_cpsw_napi_to_tx_chn(pnapi) \
 	container_of(pnapi, struct am65_cpsw_tx_chn, napi_tx)
 
@@ -215,8 +220,8 @@ struct am65_cpsw_ndev_priv {
 extern const struct ethtool_ops am65_cpsw_ethtool_ops_slave;
 
 void am65_cpsw_nuss_set_p0_ptype(struct am65_cpsw_common *common);
-void am65_cpsw_nuss_remove_tx_chns(struct am65_cpsw_common *common);
-int am65_cpsw_nuss_update_tx_chns(struct am65_cpsw_common *common, int num_tx);
+int am65_cpsw_nuss_update_tx_rx_chns(struct am65_cpsw_common *common,
+				     int num_tx, int num_rx);
 
 bool am65_cpsw_port_dev_check(const struct net_device *dev);
 

drivers/net/ethernet/ti/cpsw_ale.c

@@ -10,6 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/regmap.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/err.h>
@@ -45,6 +46,24 @@
 #define ALE_UNKNOWNVLAN_FORCE_UNTAG_EGRESS	0x9C
 #define ALE_VLAN_MASK_MUX(reg)			(0xc0 + (0x4 * (reg)))
 
+#define ALE_POLICER_PORT_OUI		0x100
+#define ALE_POLICER_DA_SA		0x104
+#define ALE_POLICER_VLAN		0x108
+#define ALE_POLICER_ETHERTYPE_IPSA	0x10c
+#define ALE_POLICER_IPDA		0x110
+#define ALE_POLICER_PIR			0x118
+#define ALE_POLICER_CIR			0x11c
+#define ALE_POLICER_TBL_CTL		0x120
+#define ALE_POLICER_CTL			0x124
+#define ALE_POLICER_TEST_CTL		0x128
+#define ALE_POLICER_HIT_STATUS		0x12c
+#define ALE_THREAD_DEF			0x134
+#define ALE_THREAD_CTL			0x138
+#define ALE_THREAD_VAL			0x13c
+
+#define ALE_POLICER_TBL_WRITE_ENABLE	BIT(31)
+#define ALE_POLICER_TBL_INDEX_MASK	GENMASK(4, 0)
+
 #define AM65_CPSW_ALE_THREAD_DEF_REG 0x134
 
 /* ALE_AGING_TIMER */
@@ -76,7 +95,7 @@ enum {
  * @dev_id: ALE version/SoC id
  * @features: features supported by ALE
  * @tbl_entries: number of ALE entries
- * @major_ver_mask: mask of ALE Major Version Value in ALE_IDVER reg.
+ * @reg_fields: pointer to array of register field configuration
  * @nu_switch_ale: NU Switch ALE
  * @vlan_entry_tbl: ALE vlan entry fields description tbl
  */
@@ -84,7 +103,7 @@ struct cpsw_ale_dev_id {
 	const char *dev_id;
 	u32 features;
 	u32 tbl_entries;
-	u32 major_ver_mask;
+	const struct reg_field *reg_fields;
 	bool nu_switch_ale;
 	const struct ale_entry_fld *vlan_entry_tbl;
 };
@@ -102,7 +121,7 @@ struct cpsw_ale_dev_id {
 #define ALE_UCAST_TOUCHED		3
 
 #define ALE_TABLE_SIZE_MULTIPLIER	1024
-#define ALE_STATUS_SIZE_MASK		0x1f
+#define ALE_POLICER_SIZE_MULTIPLIER	8
 
 static inline int cpsw_ale_get_field(u32 *ale_entry, u32 start, u32 bits)
 {
@@ -1292,25 +1311,108 @@ void cpsw_ale_stop(struct cpsw_ale *ale)
 	cpsw_ale_control_set(ale, 0, ALE_ENABLE, 0);
 }
 
+static const struct reg_field ale_fields_cpsw[] = {
+	/* CPSW_ALE_IDVER_REG */
+	[MINOR_VER]	= REG_FIELD(ALE_IDVER, 0, 7),
+	[MAJOR_VER]	= REG_FIELD(ALE_IDVER, 8, 15),
+};
+
+static const struct reg_field ale_fields_cpsw_nu[] = {
+	/* CPSW_ALE_IDVER_REG */
+	[MINOR_VER]	= REG_FIELD(ALE_IDVER, 0, 7),
+	[MAJOR_VER]	= REG_FIELD(ALE_IDVER, 8, 10),
+	/* CPSW_ALE_STATUS_REG */
+	[ALE_ENTRIES]	= REG_FIELD(ALE_STATUS, 0, 7),
+	[ALE_POLICERS]	= REG_FIELD(ALE_STATUS, 8, 15),
+	/* CPSW_ALE_POLICER_PORT_OUI_REG */
+	[POL_PORT_MEN]	= REG_FIELD(ALE_POLICER_PORT_OUI, 31, 31),
+	[POL_TRUNK_ID]	= REG_FIELD(ALE_POLICER_PORT_OUI, 30, 30),
+	[POL_PORT_NUM]	= REG_FIELD(ALE_POLICER_PORT_OUI, 25, 25),
+	[POL_PRI_MEN]	= REG_FIELD(ALE_POLICER_PORT_OUI, 19, 19),
+	[POL_PRI_VAL]	= REG_FIELD(ALE_POLICER_PORT_OUI, 16, 18),
+	[POL_OUI_MEN]	= REG_FIELD(ALE_POLICER_PORT_OUI, 15, 15),
+	[POL_OUI_INDEX]	= REG_FIELD(ALE_POLICER_PORT_OUI, 0, 5),
+
+	/* CPSW_ALE_POLICER_DA_SA_REG */
+	[POL_DST_MEN]	= REG_FIELD(ALE_POLICER_DA_SA, 31, 31),
+	[POL_DST_INDEX]	= REG_FIELD(ALE_POLICER_DA_SA, 16, 21),
+	[POL_SRC_MEN]	= REG_FIELD(ALE_POLICER_DA_SA, 15, 15),
+	[POL_SRC_INDEX]	= REG_FIELD(ALE_POLICER_DA_SA, 0, 5),
+
+	/* CPSW_ALE_POLICER_VLAN_REG */
+	[POL_OVLAN_MEN]		= REG_FIELD(ALE_POLICER_VLAN, 31, 31),
+	[POL_OVLAN_INDEX]	= REG_FIELD(ALE_POLICER_VLAN, 16, 21),
+	[POL_IVLAN_MEN]		= REG_FIELD(ALE_POLICER_VLAN, 15, 15),
+	[POL_IVLAN_INDEX]	= REG_FIELD(ALE_POLICER_VLAN, 0, 5),
+
+	/* CPSW_ALE_POLICER_ETHERTYPE_IPSA_REG */
+	[POL_ETHERTYPE_MEN]	= REG_FIELD(ALE_POLICER_ETHERTYPE_IPSA, 31, 31),
+	[POL_ETHERTYPE_INDEX]	= REG_FIELD(ALE_POLICER_ETHERTYPE_IPSA, 16, 21),
+	[POL_IPSRC_MEN]		= REG_FIELD(ALE_POLICER_ETHERTYPE_IPSA, 15, 15),
+	[POL_IPSRC_INDEX]	= REG_FIELD(ALE_POLICER_ETHERTYPE_IPSA, 0, 5),
+
+	/* CPSW_ALE_POLICER_IPDA_REG */
+	[POL_IPDST_MEN]		= REG_FIELD(ALE_POLICER_IPDA, 31, 31),
+	[POL_IPDST_INDEX]	= REG_FIELD(ALE_POLICER_IPDA, 16, 21),
+
+	/* CPSW_ALE_POLICER_TBL_CTL_REG */
+	/**
+	 * REG_FIELDS not defined for this as fields cannot be correctly
+	 * used independently
+	 */
+
+	/* CPSW_ALE_POLICER_CTL_REG */
+	[POL_EN]		= REG_FIELD(ALE_POLICER_CTL, 31, 31),
+	[POL_RED_DROP_EN]	= REG_FIELD(ALE_POLICER_CTL, 29, 29),
+	[POL_YELLOW_DROP_EN]	= REG_FIELD(ALE_POLICER_CTL, 28, 28),
+	[POL_YELLOW_THRESH]	= REG_FIELD(ALE_POLICER_CTL, 24, 26),
+	[POL_POL_MATCH_MODE]	= REG_FIELD(ALE_POLICER_CTL, 22, 23),
+	[POL_PRIORITY_THREAD_EN] = REG_FIELD(ALE_POLICER_CTL, 21, 21),
+	[POL_MAC_ONLY_DEF_DIS]	= REG_FIELD(ALE_POLICER_CTL, 20, 20),
+
+	/* CPSW_ALE_POLICER_TEST_CTL_REG */
+	[POL_TEST_CLR]		= REG_FIELD(ALE_POLICER_TEST_CTL, 31, 31),
+	[POL_TEST_CLR_RED]	= REG_FIELD(ALE_POLICER_TEST_CTL, 30, 30),
+	[POL_TEST_CLR_YELLOW]	= REG_FIELD(ALE_POLICER_TEST_CTL, 29, 29),
+	[POL_TEST_CLR_SELECTED]	= REG_FIELD(ALE_POLICER_TEST_CTL, 28, 28),
+	[POL_TEST_ENTRY]	= REG_FIELD(ALE_POLICER_TEST_CTL, 0, 4),
+
+	/* CPSW_ALE_POLICER_HIT_STATUS_REG */
+	[POL_STATUS_HIT]	= REG_FIELD(ALE_POLICER_HIT_STATUS, 31, 31),
+	[POL_STATUS_HIT_RED]	= REG_FIELD(ALE_POLICER_HIT_STATUS, 30, 30),
+	[POL_STATUS_HIT_YELLOW]	= REG_FIELD(ALE_POLICER_HIT_STATUS, 29, 29),
+
+	/* CPSW_ALE_THREAD_DEF_REG */
+	[ALE_DEFAULT_THREAD_EN]		= REG_FIELD(ALE_THREAD_DEF, 15, 15),
+	[ALE_DEFAULT_THREAD_VAL]	= REG_FIELD(ALE_THREAD_DEF, 0, 5),
+
+	/* CPSW_ALE_THREAD_CTL_REG */
+	[ALE_THREAD_CLASS_INDEX] = REG_FIELD(ALE_THREAD_CTL, 0, 4),
+
+	/* CPSW_ALE_THREAD_VAL_REG */
+	[ALE_THREAD_ENABLE]	= REG_FIELD(ALE_THREAD_VAL, 15, 15),
+	[ALE_THREAD_VALUE]	= REG_FIELD(ALE_THREAD_VAL, 0, 5),
+};
+
 static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = {
 	{
 		/* am3/4/5, dra7. dm814x, 66ak2hk-gbe */
 		.dev_id = "cpsw",
 		.tbl_entries = 1024,
-		.major_ver_mask = 0xff,
+		.reg_fields = ale_fields_cpsw,
 		.vlan_entry_tbl = vlan_entry_cpsw,
 	},
 	{
 		/* 66ak2h_xgbe */
 		.dev_id = "66ak2h-xgbe",
 		.tbl_entries = 2048,
-		.major_ver_mask = 0xff,
+		.reg_fields = ale_fields_cpsw,
 		.vlan_entry_tbl = vlan_entry_cpsw,
 	},
 	{
 		.dev_id = "66ak2el",
 		.features = CPSW_ALE_F_STATUS_REG,
-		.major_ver_mask = 0x7,
+		.reg_fields = ale_fields_cpsw_nu,
 		.nu_switch_ale = true,
 		.vlan_entry_tbl = vlan_entry_nu,
 	},
@@ -1318,7 +1420,7 @@ static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = {
 		.dev_id = "66ak2g",
 		.features = CPSW_ALE_F_STATUS_REG,
 		.tbl_entries = 64,
-		.major_ver_mask = 0x7,
+		.reg_fields = ale_fields_cpsw_nu,
 		.nu_switch_ale = true,
 		.vlan_entry_tbl = vlan_entry_nu,
 	},
@@ -1326,20 +1428,20 @@ static const struct cpsw_ale_dev_id cpsw_ale_id_match[] = {
 		.dev_id = "am65x-cpsw2g",
 		.features = CPSW_ALE_F_STATUS_REG | CPSW_ALE_F_HW_AUTOAGING,
 		.tbl_entries = 64,
-		.major_ver_mask = 0x7,
+		.reg_fields = ale_fields_cpsw_nu,
 		.nu_switch_ale = true,
 		.vlan_entry_tbl = vlan_entry_nu,
 	},
 	{
 		.dev_id = "j721e-cpswxg",
 		.features = CPSW_ALE_F_STATUS_REG | CPSW_ALE_F_HW_AUTOAGING,
-		.major_ver_mask = 0x7,
+		.reg_fields = ale_fields_cpsw_nu,
 		.vlan_entry_tbl = vlan_entry_k3_cpswxg,
 	},
 	{
 		.dev_id = "am64-cpswxg",
 		.features = CPSW_ALE_F_STATUS_REG | CPSW_ALE_F_HW_AUTOAGING,
-		.major_ver_mask = 0x7,
+		.reg_fields = ale_fields_cpsw_nu,
 		.vlan_entry_tbl = vlan_entry_k3_cpswxg,
 		.tbl_entries = 512,
 	},
@@ -1361,47 +1463,80 @@ cpsw_ale_dev_id *cpsw_ale_match_id(const struct cpsw_ale_dev_id *id,
 	return NULL;
 }
 
+static const struct regmap_config ale_regmap_cfg = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.name = "cpsw-ale",
+};
+
+static int cpsw_ale_regfield_init(struct cpsw_ale *ale)
+{
+	const struct reg_field *reg_fields = ale->params.reg_fields;
+	struct device *dev = ale->params.dev;
+	struct regmap *regmap = ale->regmap;
+	int i;
+
+	for (i = 0; i < ALE_FIELDS_MAX; i++) {
+		ale->fields[i] = devm_regmap_field_alloc(dev, regmap,
+							 reg_fields[i]);
+		if (IS_ERR(ale->fields[i])) {
+			dev_err(dev, "Unable to allocate regmap field %d\n", i);
+			return PTR_ERR(ale->fields[i]);
+		}
+	}
+
+	return 0;
+}
+
 struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params)
 {
+	u32 ale_entries, rev_major, rev_minor, policers;
 	const struct cpsw_ale_dev_id *ale_dev_id;
 	struct cpsw_ale *ale;
-	u32 rev, ale_entries;
+	int ret;
 
 	ale_dev_id = cpsw_ale_match_id(cpsw_ale_id_match, params->dev_id);
 	if (!ale_dev_id)
 		return ERR_PTR(-EINVAL);
 
 	params->ale_entries = ale_dev_id->tbl_entries;
-	params->major_ver_mask = ale_dev_id->major_ver_mask;
 	params->nu_switch_ale = ale_dev_id->nu_switch_ale;
+	params->reg_fields = ale_dev_id->reg_fields;
 
 	ale = devm_kzalloc(params->dev, sizeof(*ale), GFP_KERNEL);
 	if (!ale)
 		return ERR_PTR(-ENOMEM);
+	ale->regmap = devm_regmap_init_mmio(params->dev, params->ale_regs,
+					    &ale_regmap_cfg);
+	if (IS_ERR(ale->regmap)) {
+		dev_err(params->dev, "Couldn't create CPSW ALE regmap\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	ale->params = *params;
+	ret = cpsw_ale_regfield_init(ale);
+	if (ret)
+		return ERR_PTR(ret);
 
 	ale->p0_untag_vid_mask = devm_bitmap_zalloc(params->dev, VLAN_N_VID,
 						    GFP_KERNEL);
 	if (!ale->p0_untag_vid_mask)
 		return ERR_PTR(-ENOMEM);
 
-	ale->params = *params;
 	ale->ageout = ale->params.ale_ageout * HZ;
 	ale->features = ale_dev_id->features;
 	ale->vlan_entry_tbl = ale_dev_id->vlan_entry_tbl;
 
-	rev = readl_relaxed(ale->params.ale_regs + ALE_IDVER);
-	ale->version =
-		(ALE_VERSION_MAJOR(rev, ale->params.major_ver_mask) << 8) |
-		 ALE_VERSION_MINOR(rev);
+	regmap_field_read(ale->fields[MINOR_VER], &rev_minor);
+	regmap_field_read(ale->fields[MAJOR_VER], &rev_major);
+	ale->version = rev_major << 8 | rev_minor;
 	dev_info(ale->params.dev, "initialized cpsw ale version %d.%d\n",
-		 ALE_VERSION_MAJOR(rev, ale->params.major_ver_mask),
-		 ALE_VERSION_MINOR(rev));
+		 rev_major, rev_minor);
 
 	if (ale->features & CPSW_ALE_F_STATUS_REG &&
 	    !ale->params.ale_entries) {
-		ale_entries =
-			readl_relaxed(ale->params.ale_regs + ALE_STATUS) &
-			ALE_STATUS_SIZE_MASK;
+		regmap_field_read(ale->fields[ALE_ENTRIES], &ale_entries);
 		/* ALE available on newer NetCP switches has introduced
 		 * a register, ALE_STATUS, to indicate the size of ALE
 		 * table which shows the size as a multiple of 1024 entries.
@@ -1415,8 +1550,20 @@ struct cpsw_ale *cpsw_ale_create(struct cpsw_ale_params *params)
 		ale_entries *= ALE_TABLE_SIZE_MULTIPLIER;
 		ale->params.ale_entries = ale_entries;
 	}
+
+	if (ale->features & CPSW_ALE_F_STATUS_REG &&
+	    !ale->params.num_policers) {
+		regmap_field_read(ale->fields[ALE_POLICERS], &policers);
+		if (!policers)
+			return ERR_PTR(-EINVAL);
+
+		policers *= ALE_POLICER_SIZE_MULTIPLIER;
+		ale->params.num_policers = policers;
+	}
+
 	dev_info(ale->params.dev,
-		 "ALE Table size %ld\n", ale->params.ale_entries);
+		 "ALE Table size %ld, Policers %ld\n", ale->params.ale_entries,
+		 ale->params.num_policers);
 
 	/* set default bits for existing h/w */
 	ale->port_mask_bits = ale->params.ale_ports;
@@ -1480,3 +1627,97 @@ u32 cpsw_ale_get_num_entries(struct cpsw_ale *ale)
 {
 	return ale ? ale->params.ale_entries : 0;
 }
+
+/* Reads the specified policer index into ALE POLICER registers */
+static void cpsw_ale_policer_read_idx(struct cpsw_ale *ale, u32 idx)
+{
+	idx &= ALE_POLICER_TBL_INDEX_MASK;
+	writel_relaxed(idx, ale->params.ale_regs + ALE_POLICER_TBL_CTL);
+}
+
+/* Writes the ALE POLICER registers into the specified policer index */
+static void cpsw_ale_policer_write_idx(struct cpsw_ale *ale, u32 idx)
+{
+	idx &= ALE_POLICER_TBL_INDEX_MASK;
+	idx |= ALE_POLICER_TBL_WRITE_ENABLE;
+	writel_relaxed(idx, ale->params.ale_regs + ALE_POLICER_TBL_CTL);
+}
+
+/* enables/disables the custom thread value for the specified policer index */
+static void cpsw_ale_policer_thread_idx_enable(struct cpsw_ale *ale, u32 idx,
+					       u32 thread_id, bool enable)
+{
+	regmap_field_write(ale->fields[ALE_THREAD_CLASS_INDEX], idx);
+	regmap_field_write(ale->fields[ALE_THREAD_VALUE], thread_id);
+	regmap_field_write(ale->fields[ALE_THREAD_ENABLE], enable ? 1 : 0);
+}
+
+/* Disable all policer entries and thread mappings */
+static void cpsw_ale_policer_reset(struct cpsw_ale *ale)
+{
+	int i;
+
+	for (i = 0; i < ale->params.num_policers ; i++) {
+		cpsw_ale_policer_read_idx(ale, i);
+		regmap_field_write(ale->fields[POL_PORT_MEN], 0);
+		regmap_field_write(ale->fields[POL_PRI_MEN], 0);
+		regmap_field_write(ale->fields[POL_OUI_MEN], 0);
+		regmap_field_write(ale->fields[POL_DST_MEN], 0);
+		regmap_field_write(ale->fields[POL_SRC_MEN], 0);
+		regmap_field_write(ale->fields[POL_OVLAN_MEN], 0);
+		regmap_field_write(ale->fields[POL_IVLAN_MEN], 0);
+		regmap_field_write(ale->fields[POL_ETHERTYPE_MEN], 0);
+		regmap_field_write(ale->fields[POL_IPSRC_MEN], 0);
+		regmap_field_write(ale->fields[POL_IPDST_MEN], 0);
+		regmap_field_write(ale->fields[POL_EN], 0);
+		regmap_field_write(ale->fields[POL_RED_DROP_EN], 0);
+		regmap_field_write(ale->fields[POL_YELLOW_DROP_EN], 0);
+		regmap_field_write(ale->fields[POL_PRIORITY_THREAD_EN], 0);
+
+		cpsw_ale_policer_thread_idx_enable(ale, i, 0, 0);
+	}
+}
+
+/* Default classifier is to map 8 user priorities to N receive channels */
+void cpsw_ale_classifier_setup_default(struct cpsw_ale *ale, int num_rx_ch)
+{
+	int pri, idx;
+	/* IEEE802.1D-2004, Standard for Local and metropolitan area networks
+	 *    Table G-2 - Traffic type acronyms
+	 *    Table G-3 - Defining traffic types
+	 * User priority values 1 and 2 effectively communicate a lower
+	 * priority than 0. In the below table 0 is assigned to higher priority
+	 * thread than 1 and 2 wherever possible.
+	 * The below table maps which thread the user priority needs to be
+	 * sent to for a given number of threads (RX channels). Upper threads
+	 * have higher priority.
+	 * e.g. if number of threads is 8 then user priority 0 will map to
+	 * pri_thread_map[8-1][0] i.e. thread 2
+	 */
+	int pri_thread_map[8][8] = {	{ 0, 0, 0, 0, 0, 0, 0, 0, },
+					{ 0, 0, 0, 0, 1, 1, 1, 1, },
+					{ 0, 0, 0, 0, 1, 1, 2, 2, },
+					{ 1, 0, 0, 1, 2, 2, 3, 3, },
+					{ 1, 0, 0, 1, 2, 3, 4, 4, },
+					{ 1, 0, 0, 2, 3, 4, 5, 5, },
+					{ 1, 0, 0, 2, 3, 4, 5, 6, },
+					{ 2, 0, 1, 3, 4, 5, 6, 7, } };
+
+	cpsw_ale_policer_reset(ale);
+
+	/* use first 8 classifiers to map 8 (DSCP/PCP) priorities to channels */
+	for (pri = 0; pri < 8; pri++) {
+		idx = pri;
+
+		/* Classifier 'idx' match on priority 'pri' */
+		cpsw_ale_policer_read_idx(ale, idx);
+		regmap_field_write(ale->fields[POL_PRI_VAL], pri);
+		regmap_field_write(ale->fields[POL_PRI_MEN], 1);
+		cpsw_ale_policer_write_idx(ale, idx);
+
+		/* Map Classifier 'idx' to thread provided by the map */
+		cpsw_ale_policer_thread_idx_enable(ale, idx,
+						   pri_thread_map[num_rx_ch - 1][pri],
+						   1);
+	}
+}

drivers/net/ethernet/ti/cpsw_ale.h

@@ -8,11 +8,14 @@
 #ifndef __TI_CPSW_ALE_H__
 #define __TI_CPSW_ALE_H__
 
+struct reg_fields;
+
 struct cpsw_ale_params {
 	struct device		*dev;
 	void __iomem		*ale_regs;
 	unsigned long		ale_ageout;	/* in secs */
 	unsigned long		ale_entries;
+	unsigned long		num_policers;
 	unsigned long		ale_ports;
 	/* NU Switch has specific handling as number of bits in ALE entries
 	 * are different than other versions of ALE. Also there are specific
@@ -20,19 +23,69 @@ struct cpsw_ale_params {
 	 * to identify this hardware.
 	 */
 	bool			nu_switch_ale;
-	/* mask bit used in NU Switch ALE is 3 bits instead of 8 bits. So
-	 * pass it from caller.
-	 */
-	u32			major_ver_mask;
+	const struct reg_field *reg_fields;
 	const char		*dev_id;
 	unsigned long		bus_freq;
 };
 
 struct ale_entry_fld;
+struct regmap;
+
+enum ale_fields {
+	MINOR_VER,
+	MAJOR_VER,
+	ALE_ENTRIES,
+	ALE_POLICERS,
+	POL_PORT_MEN,
+	POL_TRUNK_ID,
+	POL_PORT_NUM,
+	POL_PRI_MEN,
+	POL_PRI_VAL,
+	POL_OUI_MEN,
+	POL_OUI_INDEX,
+	POL_DST_MEN,
+	POL_DST_INDEX,
+	POL_SRC_MEN,
+	POL_SRC_INDEX,
+	POL_OVLAN_MEN,
+	POL_OVLAN_INDEX,
+	POL_IVLAN_MEN,
+	POL_IVLAN_INDEX,
+	POL_ETHERTYPE_MEN,
+	POL_ETHERTYPE_INDEX,
+	POL_IPSRC_MEN,
+	POL_IPSRC_INDEX,
+	POL_IPDST_MEN,
+	POL_IPDST_INDEX,
+	POL_EN,
+	POL_RED_DROP_EN,
+	POL_YELLOW_DROP_EN,
+	POL_YELLOW_THRESH,
+	POL_POL_MATCH_MODE,
+	POL_PRIORITY_THREAD_EN,
+	POL_MAC_ONLY_DEF_DIS,
+	POL_TEST_CLR,
+	POL_TEST_CLR_RED,
+	POL_TEST_CLR_YELLOW,
+	POL_TEST_CLR_SELECTED,
+	POL_TEST_ENTRY,
+	POL_STATUS_HIT,
+	POL_STATUS_HIT_RED,
+	POL_STATUS_HIT_YELLOW,
+	ALE_DEFAULT_THREAD_EN,
+	ALE_DEFAULT_THREAD_VAL,
+	ALE_THREAD_CLASS_INDEX,
+	ALE_THREAD_ENABLE,
+	ALE_THREAD_VALUE,
+	/* terminator */
+	ALE_FIELDS_MAX,
+};
 
 struct cpsw_ale {
 	struct cpsw_ale_params	params;
 	struct timer_list	timer;
+	struct regmap		*regmap;
+	struct regmap_field	*fields[ALE_FIELDS_MAX];
 	unsigned long		ageout;
 	u32			version;
 	u32			features;
@@ -140,5 +193,6 @@ int cpsw_ale_vlan_add_modify(struct cpsw_ale *ale, u16 vid, int port_mask,
 int cpsw_ale_vlan_del_modify(struct cpsw_ale *ale, u16 vid, int port_mask);
 void cpsw_ale_set_unreg_mcast(struct cpsw_ale *ale, int unreg_mcast_mask,
 			      bool add);
+void cpsw_ale_classifier_setup_default(struct cpsw_ale *ale, int num_rx_ch);
 
 #endif