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1// SPDX-License-Identifier: GPL-2.02/*3 * Texas Instruments Ethernet Switch Driver4 *5 * Copyright (C) 2019 Texas Instruments6 */7 8#include <linux/bpf.h>9#include <linux/bpf_trace.h>10#include <linux/if_ether.h>11#include <linux/if_vlan.h>12#include <linux/kmemleak.h>13#include <linux/module.h>14#include <linux/netdevice.h>15#include <linux/net_tstamp.h>16#include <linux/of.h>17#include <linux/phy.h>18#include <linux/platform_device.h>19#include <linux/pm_runtime.h>20#include <linux/skbuff.h>21#include <net/page_pool/helpers.h>22#include <net/pkt_cls.h>23#include <net/pkt_sched.h>24 25#include "cpsw.h"26#include "cpts.h"27#include "cpsw_ale.h"28#include "cpsw_priv.h"29#include "cpsw_sl.h"30#include "davinci_cpdma.h"31 32#define CPTS_N_ETX_TS 433 34int (*cpsw_slave_index)(struct cpsw_common *cpsw, struct cpsw_priv *priv);35 36void cpsw_intr_enable(struct cpsw_common *cpsw)37{38	writel_relaxed(0xFF, &cpsw->wr_regs->tx_en);39	writel_relaxed(0xFF, &cpsw->wr_regs->rx_en);40 41	cpdma_ctlr_int_ctrl(cpsw->dma, true);42}43 44void cpsw_intr_disable(struct cpsw_common *cpsw)45{46	writel_relaxed(0, &cpsw->wr_regs->tx_en);47	writel_relaxed(0, &cpsw->wr_regs->rx_en);48 49	cpdma_ctlr_int_ctrl(cpsw->dma, false);50}51 52void cpsw_tx_handler(void *token, int len, int status)53{54	struct cpsw_meta_xdp	*xmeta;55	struct xdp_frame	*xdpf;56	struct net_device	*ndev;57	struct netdev_queue	*txq;58	struct sk_buff		*skb;59	int			ch;60 61	if (cpsw_is_xdpf_handle(token)) {62		xdpf = cpsw_handle_to_xdpf(token);63		xmeta = (void *)xdpf + CPSW_XMETA_OFFSET;64		ndev = xmeta->ndev;65		ch = xmeta->ch;66		xdp_return_frame(xdpf);67	} else {68		skb = token;69		ndev = skb->dev;70		ch = skb_get_queue_mapping(skb);71		cpts_tx_timestamp(ndev_to_cpsw(ndev)->cpts, skb);72		dev_kfree_skb_any(skb);73	}74 75	/* Check whether the queue is stopped due to stalled tx dma, if the76	 * queue is stopped then start the queue as we have free desc for tx77	 */78	txq = netdev_get_tx_queue(ndev, ch);79	if (unlikely(netif_tx_queue_stopped(txq)))80		netif_tx_wake_queue(txq);81 82	ndev->stats.tx_packets++;83	ndev->stats.tx_bytes += len;84}85 86irqreturn_t cpsw_tx_interrupt(int irq, void *dev_id)87{88	struct cpsw_common *cpsw = dev_id;89 90	writel(0, &cpsw->wr_regs->tx_en);91	cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_TX);92 93	if (cpsw->quirk_irq) {94		disable_irq_nosync(cpsw->irqs_table[1]);95		cpsw->tx_irq_disabled = true;96	}97 98	napi_schedule(&cpsw->napi_tx);99	return IRQ_HANDLED;100}101 102irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id)103{104	struct cpsw_common *cpsw = dev_id;105 106	writel(0, &cpsw->wr_regs->rx_en);107	cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_RX);108 109	if (cpsw->quirk_irq) {110		disable_irq_nosync(cpsw->irqs_table[0]);111		cpsw->rx_irq_disabled = true;112	}113 114	napi_schedule(&cpsw->napi_rx);115	return IRQ_HANDLED;116}117 118irqreturn_t cpsw_misc_interrupt(int irq, void *dev_id)119{120	struct cpsw_common *cpsw = dev_id;121 122	writel(0, &cpsw->wr_regs->misc_en);123	cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_MISC);124	cpts_misc_interrupt(cpsw->cpts);125	writel(0x10, &cpsw->wr_regs->misc_en);126 127	return IRQ_HANDLED;128}129 130int cpsw_tx_mq_poll(struct napi_struct *napi_tx, int budget)131{132	struct cpsw_common	*cpsw = napi_to_cpsw(napi_tx);133	int			num_tx, cur_budget, ch;134	u32			ch_map;135	struct cpsw_vector	*txv;136 137	/* process every unprocessed channel */138	ch_map = cpdma_ctrl_txchs_state(cpsw->dma);139	for (ch = 0, num_tx = 0; ch_map & 0xff; ch_map <<= 1, ch++) {140		if (!(ch_map & 0x80))141			continue;142 143		txv = &cpsw->txv[ch];144		if (unlikely(txv->budget > budget - num_tx))145			cur_budget = budget - num_tx;146		else147			cur_budget = txv->budget;148 149		num_tx += cpdma_chan_process(txv->ch, cur_budget);150		if (num_tx >= budget)151			break;152	}153 154	if (num_tx < budget) {155		napi_complete(napi_tx);156		writel(0xff, &cpsw->wr_regs->tx_en);157	}158 159	return num_tx;160}161 162int cpsw_tx_poll(struct napi_struct *napi_tx, int budget)163{164	struct cpsw_common *cpsw = napi_to_cpsw(napi_tx);165	int num_tx;166 167	num_tx = cpdma_chan_process(cpsw->txv[0].ch, budget);168	if (num_tx < budget) {169		napi_complete(napi_tx);170		writel(0xff, &cpsw->wr_regs->tx_en);171		if (cpsw->tx_irq_disabled) {172			cpsw->tx_irq_disabled = false;173			enable_irq(cpsw->irqs_table[1]);174		}175	}176 177	return num_tx;178}179 180int cpsw_rx_mq_poll(struct napi_struct *napi_rx, int budget)181{182	struct cpsw_common	*cpsw = napi_to_cpsw(napi_rx);183	int			num_rx, cur_budget, ch;184	u32			ch_map;185	struct cpsw_vector	*rxv;186 187	/* process every unprocessed channel */188	ch_map = cpdma_ctrl_rxchs_state(cpsw->dma);189	for (ch = 0, num_rx = 0; ch_map; ch_map >>= 1, ch++) {190		if (!(ch_map & 0x01))191			continue;192 193		rxv = &cpsw->rxv[ch];194		if (unlikely(rxv->budget > budget - num_rx))195			cur_budget = budget - num_rx;196		else197			cur_budget = rxv->budget;198 199		num_rx += cpdma_chan_process(rxv->ch, cur_budget);200		if (num_rx >= budget)201			break;202	}203 204	if (num_rx < budget) {205		napi_complete_done(napi_rx, num_rx);206		writel(0xff, &cpsw->wr_regs->rx_en);207	}208 209	return num_rx;210}211 212int cpsw_rx_poll(struct napi_struct *napi_rx, int budget)213{214	struct cpsw_common *cpsw = napi_to_cpsw(napi_rx);215	int num_rx;216 217	num_rx = cpdma_chan_process(cpsw->rxv[0].ch, budget);218	if (num_rx < budget) {219		napi_complete_done(napi_rx, num_rx);220		writel(0xff, &cpsw->wr_regs->rx_en);221		if (cpsw->rx_irq_disabled) {222			cpsw->rx_irq_disabled = false;223			enable_irq(cpsw->irqs_table[0]);224		}225	}226 227	return num_rx;228}229 230void cpsw_rx_vlan_encap(struct sk_buff *skb)231{232	struct cpsw_priv *priv = netdev_priv(skb->dev);233	u32 rx_vlan_encap_hdr = *((u32 *)skb->data);234	struct cpsw_common *cpsw = priv->cpsw;235	u16 vtag, vid, prio, pkt_type;236 237	/* Remove VLAN header encapsulation word */238	skb_pull(skb, CPSW_RX_VLAN_ENCAP_HDR_SIZE);239 240	pkt_type = (rx_vlan_encap_hdr >>241		    CPSW_RX_VLAN_ENCAP_HDR_PKT_TYPE_SHIFT) &242		    CPSW_RX_VLAN_ENCAP_HDR_PKT_TYPE_MSK;243	/* Ignore unknown & Priority-tagged packets*/244	if (pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_RESERV ||245	    pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_PRIO_TAG)246		return;247 248	vid = (rx_vlan_encap_hdr >>249	       CPSW_RX_VLAN_ENCAP_HDR_VID_SHIFT) &250	       VLAN_VID_MASK;251	/* Ignore vid 0 and pass packet as is */252	if (!vid)253		return;254 255	/* Untag P0 packets if set for vlan */256	if (!cpsw_ale_get_vlan_p0_untag(cpsw->ale, vid)) {257		prio = (rx_vlan_encap_hdr >>258			CPSW_RX_VLAN_ENCAP_HDR_PRIO_SHIFT) &259			CPSW_RX_VLAN_ENCAP_HDR_PRIO_MSK;260 261		vtag = (prio << VLAN_PRIO_SHIFT) | vid;262		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vtag);263	}264 265	/* strip vlan tag for VLAN-tagged packet */266	if (pkt_type == CPSW_RX_VLAN_ENCAP_HDR_PKT_VLAN_TAG) {267		memmove(skb->data + VLAN_HLEN, skb->data, 2 * ETH_ALEN);268		skb_pull(skb, VLAN_HLEN);269	}270}271 272void cpsw_set_slave_mac(struct cpsw_slave *slave, struct cpsw_priv *priv)273{274	slave_write(slave, mac_hi(priv->mac_addr), SA_HI);275	slave_write(slave, mac_lo(priv->mac_addr), SA_LO);276}277 278void soft_reset(const char *module, void __iomem *reg)279{280	unsigned long timeout = jiffies + HZ;281 282	writel_relaxed(1, reg);283	do {284		cpu_relax();285	} while ((readl_relaxed(reg) & 1) && time_after(timeout, jiffies));286 287	WARN(readl_relaxed(reg) & 1, "failed to soft-reset %s\n", module);288}289 290void cpsw_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue)291{292	struct cpsw_priv *priv = netdev_priv(ndev);293	struct cpsw_common *cpsw = priv->cpsw;294	int ch;295 296	cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");297	ndev->stats.tx_errors++;298	cpsw_intr_disable(cpsw);299	for (ch = 0; ch < cpsw->tx_ch_num; ch++) {300		cpdma_chan_stop(cpsw->txv[ch].ch);301		cpdma_chan_start(cpsw->txv[ch].ch);302	}303 304	cpsw_intr_enable(cpsw);305	netif_trans_update(ndev);306	netif_tx_wake_all_queues(ndev);307}308 309static int cpsw_get_common_speed(struct cpsw_common *cpsw)310{311	int i, speed;312 313	for (i = 0, speed = 0; i < cpsw->data.slaves; i++)314		if (cpsw->slaves[i].phy && cpsw->slaves[i].phy->link)315			speed += cpsw->slaves[i].phy->speed;316 317	return speed;318}319 320int cpsw_need_resplit(struct cpsw_common *cpsw)321{322	int i, rlim_ch_num;323	int speed, ch_rate;324 325	/* re-split resources only in case speed was changed */326	speed = cpsw_get_common_speed(cpsw);327	if (speed == cpsw->speed || !speed)328		return 0;329 330	cpsw->speed = speed;331 332	for (i = 0, rlim_ch_num = 0; i < cpsw->tx_ch_num; i++) {333		ch_rate = cpdma_chan_get_rate(cpsw->txv[i].ch);334		if (!ch_rate)335			break;336 337		rlim_ch_num++;338	}339 340	/* cases not dependent on speed */341	if (!rlim_ch_num || rlim_ch_num == cpsw->tx_ch_num)342		return 0;343 344	return 1;345}346 347void cpsw_split_res(struct cpsw_common *cpsw)348{349	u32 consumed_rate = 0, bigest_rate = 0;350	struct cpsw_vector *txv = cpsw->txv;351	int i, ch_weight, rlim_ch_num = 0;352	int budget, bigest_rate_ch = 0;353	u32 ch_rate, max_rate;354	int ch_budget = 0;355 356	for (i = 0; i < cpsw->tx_ch_num; i++) {357		ch_rate = cpdma_chan_get_rate(txv[i].ch);358		if (!ch_rate)359			continue;360 361		rlim_ch_num++;362		consumed_rate += ch_rate;363	}364 365	if (cpsw->tx_ch_num == rlim_ch_num) {366		max_rate = consumed_rate;367	} else if (!rlim_ch_num) {368		ch_budget = NAPI_POLL_WEIGHT / cpsw->tx_ch_num;369		bigest_rate = 0;370		max_rate = consumed_rate;371	} else {372		max_rate = cpsw->speed * 1000;373 374		/* if max_rate is less then expected due to reduced link speed,375		 * split proportionally according next potential max speed376		 */377		if (max_rate < consumed_rate)378			max_rate *= 10;379 380		if (max_rate < consumed_rate)381			max_rate *= 10;382 383		ch_budget = (consumed_rate * NAPI_POLL_WEIGHT) / max_rate;384		ch_budget = (NAPI_POLL_WEIGHT - ch_budget) /385			    (cpsw->tx_ch_num - rlim_ch_num);386		bigest_rate = (max_rate - consumed_rate) /387			      (cpsw->tx_ch_num - rlim_ch_num);388	}389 390	/* split tx weight/budget */391	budget = NAPI_POLL_WEIGHT;392	for (i = 0; i < cpsw->tx_ch_num; i++) {393		ch_rate = cpdma_chan_get_rate(txv[i].ch);394		if (ch_rate) {395			txv[i].budget = (ch_rate * NAPI_POLL_WEIGHT) / max_rate;396			if (!txv[i].budget)397				txv[i].budget++;398			if (ch_rate > bigest_rate) {399				bigest_rate_ch = i;400				bigest_rate = ch_rate;401			}402 403			ch_weight = (ch_rate * 100) / max_rate;404			if (!ch_weight)405				ch_weight++;406			cpdma_chan_set_weight(cpsw->txv[i].ch, ch_weight);407		} else {408			txv[i].budget = ch_budget;409			if (!bigest_rate_ch)410				bigest_rate_ch = i;411			cpdma_chan_set_weight(cpsw->txv[i].ch, 0);412		}413 414		budget -= txv[i].budget;415	}416 417	if (budget)418		txv[bigest_rate_ch].budget += budget;419 420	/* split rx budget */421	budget = NAPI_POLL_WEIGHT;422	ch_budget = budget / cpsw->rx_ch_num;423	for (i = 0; i < cpsw->rx_ch_num; i++) {424		cpsw->rxv[i].budget = ch_budget;425		budget -= ch_budget;426	}427 428	if (budget)429		cpsw->rxv[0].budget += budget;430}431 432int cpsw_init_common(struct cpsw_common *cpsw, void __iomem *ss_regs,433		     int ale_ageout, phys_addr_t desc_mem_phys,434		     int descs_pool_size)435{436	u32 slave_offset, sliver_offset, slave_size;437	struct cpsw_ale_params ale_params;438	struct cpsw_platform_data *data;439	struct cpdma_params dma_params;440	struct device *dev = cpsw->dev;441	struct device_node *cpts_node;442	void __iomem *cpts_regs;443	int ret = 0, i;444 445	data = &cpsw->data;446	cpsw->rx_ch_num = 1;447	cpsw->tx_ch_num = 1;448 449	cpsw->version = readl(&cpsw->regs->id_ver);450 451	memset(&dma_params, 0, sizeof(dma_params));452	memset(&ale_params, 0, sizeof(ale_params));453 454	switch (cpsw->version) {455	case CPSW_VERSION_1:456		cpsw->host_port_regs = ss_regs + CPSW1_HOST_PORT_OFFSET;457		cpts_regs	     = ss_regs + CPSW1_CPTS_OFFSET;458		cpsw->hw_stats	     = ss_regs + CPSW1_HW_STATS;459		dma_params.dmaregs   = ss_regs + CPSW1_CPDMA_OFFSET;460		dma_params.txhdp     = ss_regs + CPSW1_STATERAM_OFFSET;461		ale_params.ale_regs  = ss_regs + CPSW1_ALE_OFFSET;462		slave_offset         = CPSW1_SLAVE_OFFSET;463		slave_size           = CPSW1_SLAVE_SIZE;464		sliver_offset        = CPSW1_SLIVER_OFFSET;465		dma_params.desc_mem_phys = 0;466		break;467	case CPSW_VERSION_2:468	case CPSW_VERSION_3:469	case CPSW_VERSION_4:470		cpsw->host_port_regs = ss_regs + CPSW2_HOST_PORT_OFFSET;471		cpts_regs	     = ss_regs + CPSW2_CPTS_OFFSET;472		cpsw->hw_stats	     = ss_regs + CPSW2_HW_STATS;473		dma_params.dmaregs   = ss_regs + CPSW2_CPDMA_OFFSET;474		dma_params.txhdp     = ss_regs + CPSW2_STATERAM_OFFSET;475		ale_params.ale_regs  = ss_regs + CPSW2_ALE_OFFSET;476		slave_offset         = CPSW2_SLAVE_OFFSET;477		slave_size           = CPSW2_SLAVE_SIZE;478		sliver_offset        = CPSW2_SLIVER_OFFSET;479		dma_params.desc_mem_phys = desc_mem_phys;480		break;481	default:482		dev_err(dev, "unknown version 0x%08x\n", cpsw->version);483		return -ENODEV;484	}485 486	for (i = 0; i < cpsw->data.slaves; i++) {487		struct cpsw_slave *slave = &cpsw->slaves[i];488		void __iomem		*regs = cpsw->regs;489 490		slave->slave_num = i;491		slave->data	= &cpsw->data.slave_data[i];492		slave->regs	= regs + slave_offset;493		slave->port_vlan = slave->data->dual_emac_res_vlan;494		slave->mac_sl = cpsw_sl_get("cpsw", dev, regs + sliver_offset);495		if (IS_ERR(slave->mac_sl))496			return PTR_ERR(slave->mac_sl);497 498		slave_offset  += slave_size;499		sliver_offset += SLIVER_SIZE;500	}501 502	ale_params.dev			= dev;503	ale_params.ale_ageout		= ale_ageout;504	ale_params.ale_ports		= CPSW_ALE_PORTS_NUM;505	ale_params.dev_id		= "cpsw";506	ale_params.bus_freq		= cpsw->bus_freq_mhz * 1000000;507 508	cpsw->ale = cpsw_ale_create(&ale_params);509	if (IS_ERR(cpsw->ale)) {510		dev_err(dev, "error initializing ale engine\n");511		return PTR_ERR(cpsw->ale);512	}513 514	dma_params.dev		= dev;515	dma_params.rxthresh	= dma_params.dmaregs + CPDMA_RXTHRESH;516	dma_params.rxfree	= dma_params.dmaregs + CPDMA_RXFREE;517	dma_params.rxhdp	= dma_params.txhdp + CPDMA_RXHDP;518	dma_params.txcp		= dma_params.txhdp + CPDMA_TXCP;519	dma_params.rxcp		= dma_params.txhdp + CPDMA_RXCP;520 521	dma_params.num_chan		= data->channels;522	dma_params.has_soft_reset	= true;523	dma_params.min_packet_size	= CPSW_MIN_PACKET_SIZE;524	dma_params.desc_mem_size	= data->bd_ram_size;525	dma_params.desc_align		= 16;526	dma_params.has_ext_regs		= true;527	dma_params.desc_hw_addr         = dma_params.desc_mem_phys;528	dma_params.bus_freq_mhz		= cpsw->bus_freq_mhz;529	dma_params.descs_pool_size	= descs_pool_size;530 531	cpsw->dma = cpdma_ctlr_create(&dma_params);532	if (!cpsw->dma) {533		dev_err(dev, "error initializing dma\n");534		return -ENOMEM;535	}536 537	cpts_node = of_get_child_by_name(cpsw->dev->of_node, "cpts");538	if (!cpts_node)539		cpts_node = cpsw->dev->of_node;540 541	cpsw->cpts = cpts_create(cpsw->dev, cpts_regs, cpts_node,542				 CPTS_N_ETX_TS);543	if (IS_ERR(cpsw->cpts)) {544		ret = PTR_ERR(cpsw->cpts);545		cpdma_ctlr_destroy(cpsw->dma);546	}547	of_node_put(cpts_node);548 549	return ret;550}551 552#if IS_ENABLED(CONFIG_TI_CPTS)553 554static void cpsw_hwtstamp_v1(struct cpsw_priv *priv)555{556	struct cpsw_common *cpsw = priv->cpsw;557	struct cpsw_slave *slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];558	u32 ts_en, seq_id;559 560	if (!priv->tx_ts_enabled && !priv->rx_ts_enabled) {561		slave_write(slave, 0, CPSW1_TS_CTL);562		return;563	}564 565	seq_id = (30 << CPSW_V1_SEQ_ID_OFS_SHIFT) | ETH_P_1588;566	ts_en = EVENT_MSG_BITS << CPSW_V1_MSG_TYPE_OFS;567 568	if (priv->tx_ts_enabled)569		ts_en |= CPSW_V1_TS_TX_EN;570 571	if (priv->rx_ts_enabled)572		ts_en |= CPSW_V1_TS_RX_EN;573 574	slave_write(slave, ts_en, CPSW1_TS_CTL);575	slave_write(slave, seq_id, CPSW1_TS_SEQ_LTYPE);576}577 578static void cpsw_hwtstamp_v2(struct cpsw_priv *priv)579{580	struct cpsw_common *cpsw = priv->cpsw;581	struct cpsw_slave *slave;582	u32 ctrl, mtype;583 584	slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];585 586	ctrl = slave_read(slave, CPSW2_CONTROL);587	switch (cpsw->version) {588	case CPSW_VERSION_2:589		ctrl &= ~CTRL_V2_ALL_TS_MASK;590 591		if (priv->tx_ts_enabled)592			ctrl |= CTRL_V2_TX_TS_BITS;593 594		if (priv->rx_ts_enabled)595			ctrl |= CTRL_V2_RX_TS_BITS;596		break;597	case CPSW_VERSION_3:598	default:599		ctrl &= ~CTRL_V3_ALL_TS_MASK;600 601		if (priv->tx_ts_enabled)602			ctrl |= CTRL_V3_TX_TS_BITS;603 604		if (priv->rx_ts_enabled)605			ctrl |= CTRL_V3_RX_TS_BITS;606		break;607	}608 609	mtype = (30 << TS_SEQ_ID_OFFSET_SHIFT) | EVENT_MSG_BITS;610 611	slave_write(slave, mtype, CPSW2_TS_SEQ_MTYPE);612	slave_write(slave, ctrl, CPSW2_CONTROL);613	writel_relaxed(ETH_P_1588, &cpsw->regs->ts_ltype);614	writel_relaxed(ETH_P_8021Q, &cpsw->regs->vlan_ltype);615}616 617static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)618{619	struct cpsw_priv *priv = netdev_priv(dev);620	struct cpsw_common *cpsw = priv->cpsw;621	struct hwtstamp_config cfg;622 623	if (cpsw->version != CPSW_VERSION_1 &&624	    cpsw->version != CPSW_VERSION_2 &&625	    cpsw->version != CPSW_VERSION_3)626		return -EOPNOTSUPP;627 628	if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))629		return -EFAULT;630 631	if (cfg.tx_type != HWTSTAMP_TX_OFF && cfg.tx_type != HWTSTAMP_TX_ON)632		return -ERANGE;633 634	switch (cfg.rx_filter) {635	case HWTSTAMP_FILTER_NONE:636		priv->rx_ts_enabled = 0;637		break;638	case HWTSTAMP_FILTER_ALL:639	case HWTSTAMP_FILTER_NTP_ALL:640	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:641	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:642	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:643		return -ERANGE;644	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:645	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:646	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:647	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:648	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:649	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:650	case HWTSTAMP_FILTER_PTP_V2_EVENT:651	case HWTSTAMP_FILTER_PTP_V2_SYNC:652	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:653		priv->rx_ts_enabled = HWTSTAMP_FILTER_PTP_V2_EVENT;654		cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;655		break;656	default:657		return -ERANGE;658	}659 660	priv->tx_ts_enabled = cfg.tx_type == HWTSTAMP_TX_ON;661 662	switch (cpsw->version) {663	case CPSW_VERSION_1:664		cpsw_hwtstamp_v1(priv);665		break;666	case CPSW_VERSION_2:667	case CPSW_VERSION_3:668		cpsw_hwtstamp_v2(priv);669		break;670	default:671		WARN_ON(1);672	}673 674	return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;675}676 677static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)678{679	struct cpsw_common *cpsw = ndev_to_cpsw(dev);680	struct cpsw_priv *priv = netdev_priv(dev);681	struct hwtstamp_config cfg;682 683	if (cpsw->version != CPSW_VERSION_1 &&684	    cpsw->version != CPSW_VERSION_2 &&685	    cpsw->version != CPSW_VERSION_3)686		return -EOPNOTSUPP;687 688	cfg.flags = 0;689	cfg.tx_type = priv->tx_ts_enabled ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;690	cfg.rx_filter = priv->rx_ts_enabled;691 692	return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;693}694#else695static int cpsw_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)696{697	return -EOPNOTSUPP;698}699 700static int cpsw_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)701{702	return -EOPNOTSUPP;703}704#endif /*CONFIG_TI_CPTS*/705 706int cpsw_ndo_ioctl(struct net_device *dev, struct ifreq *req, int cmd)707{708	struct cpsw_priv *priv = netdev_priv(dev);709	struct cpsw_common *cpsw = priv->cpsw;710	int slave_no = cpsw_slave_index(cpsw, priv);711	struct phy_device *phy;712 713	if (!netif_running(dev))714		return -EINVAL;715 716	phy = cpsw->slaves[slave_no].phy;717 718	if (!phy_has_hwtstamp(phy)) {719		switch (cmd) {720		case SIOCSHWTSTAMP:721			return cpsw_hwtstamp_set(dev, req);722		case SIOCGHWTSTAMP:723			return cpsw_hwtstamp_get(dev, req);724		}725	}726 727	if (phy)728		return phy_mii_ioctl(phy, req, cmd);729 730	return -EOPNOTSUPP;731}732 733int cpsw_ndo_set_tx_maxrate(struct net_device *ndev, int queue, u32 rate)734{735	struct cpsw_priv *priv = netdev_priv(ndev);736	struct cpsw_common *cpsw = priv->cpsw;737	struct cpsw_slave *slave;738	u32 min_rate;739	u32 ch_rate;740	int i, ret;741 742	ch_rate = netdev_get_tx_queue(ndev, queue)->tx_maxrate;743	if (ch_rate == rate)744		return 0;745 746	ch_rate = rate * 1000;747	min_rate = cpdma_chan_get_min_rate(cpsw->dma);748	if ((ch_rate < min_rate && ch_rate)) {749		dev_err(priv->dev, "The channel rate cannot be less than %dMbps",750			min_rate);751		return -EINVAL;752	}753 754	if (rate > cpsw->speed) {755		dev_err(priv->dev, "The channel rate cannot be more than 2Gbps");756		return -EINVAL;757	}758 759	ret = pm_runtime_resume_and_get(cpsw->dev);760	if (ret < 0)761		return ret;762 763	ret = cpdma_chan_set_rate(cpsw->txv[queue].ch, ch_rate);764	pm_runtime_put(cpsw->dev);765 766	if (ret)767		return ret;768 769	/* update rates for slaves tx queues */770	for (i = 0; i < cpsw->data.slaves; i++) {771		slave = &cpsw->slaves[i];772		if (!slave->ndev)773			continue;774 775		netdev_get_tx_queue(slave->ndev, queue)->tx_maxrate = rate;776	}777 778	cpsw_split_res(cpsw);779	return ret;780}781 782static int cpsw_tc_to_fifo(int tc, int num_tc)783{784	if (tc == num_tc - 1)785		return 0;786 787	return CPSW_FIFO_SHAPERS_NUM - tc;788}789 790bool cpsw_shp_is_off(struct cpsw_priv *priv)791{792	struct cpsw_common *cpsw = priv->cpsw;793	struct cpsw_slave *slave;794	u32 shift, mask, val;795 796	val = readl_relaxed(&cpsw->regs->ptype);797 798	slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];799	shift = CPSW_FIFO_SHAPE_EN_SHIFT + 3 * slave->slave_num;800	mask = 7 << shift;801	val = val & mask;802 803	return !val;804}805 806static void cpsw_fifo_shp_on(struct cpsw_priv *priv, int fifo, int on)807{808	struct cpsw_common *cpsw = priv->cpsw;809	struct cpsw_slave *slave;810	u32 shift, mask, val;811 812	val = readl_relaxed(&cpsw->regs->ptype);813 814	slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];815	shift = CPSW_FIFO_SHAPE_EN_SHIFT + 3 * slave->slave_num;816	mask = (1 << --fifo) << shift;817	val = on ? val | mask : val & ~mask;818 819	writel_relaxed(val, &cpsw->regs->ptype);820}821 822static int cpsw_set_fifo_bw(struct cpsw_priv *priv, int fifo, int bw)823{824	struct cpsw_common *cpsw = priv->cpsw;825	u32 val = 0, send_pct, shift;826	struct cpsw_slave *slave;827	int pct = 0, i;828 829	if (bw > priv->shp_cfg_speed * 1000)830		goto err;831 832	/* shaping has to stay enabled for highest fifos linearly833	 * and fifo bw no more then interface can allow834	 */835	slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];836	send_pct = slave_read(slave, SEND_PERCENT);837	for (i = CPSW_FIFO_SHAPERS_NUM; i > 0; i--) {838		if (!bw) {839			if (i >= fifo || !priv->fifo_bw[i])840				continue;841 842			dev_warn(priv->dev, "Prev FIFO%d is shaped", i);843			continue;844		}845 846		if (!priv->fifo_bw[i] && i > fifo) {847			dev_err(priv->dev, "Upper FIFO%d is not shaped", i);848			return -EINVAL;849		}850 851		shift = (i - 1) * 8;852		if (i == fifo) {853			send_pct &= ~(CPSW_PCT_MASK << shift);854			val = DIV_ROUND_UP(bw, priv->shp_cfg_speed * 10);855			if (!val)856				val = 1;857 858			send_pct |= val << shift;859			pct += val;860			continue;861		}862 863		if (priv->fifo_bw[i])864			pct += (send_pct >> shift) & CPSW_PCT_MASK;865	}866 867	if (pct >= 100)868		goto err;869 870	slave_write(slave, send_pct, SEND_PERCENT);871	priv->fifo_bw[fifo] = bw;872 873	dev_warn(priv->dev, "set FIFO%d bw = %d\n", fifo,874		 DIV_ROUND_CLOSEST(val * priv->shp_cfg_speed, 100));875 876	return 0;877err:878	dev_err(priv->dev, "Bandwidth doesn't fit in tc configuration");879	return -EINVAL;880}881 882static int cpsw_set_fifo_rlimit(struct cpsw_priv *priv, int fifo, int bw)883{884	struct cpsw_common *cpsw = priv->cpsw;885	struct cpsw_slave *slave;886	u32 tx_in_ctl_rg, val;887	int ret;888 889	ret = cpsw_set_fifo_bw(priv, fifo, bw);890	if (ret)891		return ret;892 893	slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];894	tx_in_ctl_rg = cpsw->version == CPSW_VERSION_1 ?895		       CPSW1_TX_IN_CTL : CPSW2_TX_IN_CTL;896 897	if (!bw)898		cpsw_fifo_shp_on(priv, fifo, bw);899 900	val = slave_read(slave, tx_in_ctl_rg);901	if (cpsw_shp_is_off(priv)) {902		/* disable FIFOs rate limited queues */903		val &= ~(0xf << CPSW_FIFO_RATE_EN_SHIFT);904 905		/* set type of FIFO queues to normal priority mode */906		val &= ~(3 << CPSW_FIFO_QUEUE_TYPE_SHIFT);907 908		/* set type of FIFO queues to be rate limited */909		if (bw)910			val |= 2 << CPSW_FIFO_QUEUE_TYPE_SHIFT;911		else912			priv->shp_cfg_speed = 0;913	}914 915	/* toggle a FIFO rate limited queue */916	if (bw)917		val |= BIT(fifo + CPSW_FIFO_RATE_EN_SHIFT);918	else919		val &= ~BIT(fifo + CPSW_FIFO_RATE_EN_SHIFT);920	slave_write(slave, val, tx_in_ctl_rg);921 922	/* FIFO transmit shape enable */923	cpsw_fifo_shp_on(priv, fifo, bw);924	return 0;925}926 927/* Defaults:928 * class A - prio 3929 * class B - prio 2930 * shaping for class A should be set first931 */932static int cpsw_set_cbs(struct net_device *ndev,933			struct tc_cbs_qopt_offload *qopt)934{935	struct cpsw_priv *priv = netdev_priv(ndev);936	struct cpsw_common *cpsw = priv->cpsw;937	struct cpsw_slave *slave;938	int prev_speed = 0;939	int tc, ret, fifo;940	u32 bw = 0;941 942	tc = netdev_txq_to_tc(priv->ndev, qopt->queue);943 944	/* enable channels in backward order, as highest FIFOs must be rate945	 * limited first and for compliance with CPDMA rate limited channels946	 * that also used in bacward order. FIFO0 cannot be rate limited.947	 */948	fifo = cpsw_tc_to_fifo(tc, ndev->num_tc);949	if (!fifo) {950		dev_err(priv->dev, "Last tc%d can't be rate limited", tc);951		return -EINVAL;952	}953 954	/* do nothing, it's disabled anyway */955	if (!qopt->enable && !priv->fifo_bw[fifo])956		return 0;957 958	/* shapers can be set if link speed is known */959	slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];960	if (slave->phy && slave->phy->link) {961		if (priv->shp_cfg_speed &&962		    priv->shp_cfg_speed != slave->phy->speed)963			prev_speed = priv->shp_cfg_speed;964 965		priv->shp_cfg_speed = slave->phy->speed;966	}967 968	if (!priv->shp_cfg_speed) {969		dev_err(priv->dev, "Link speed is not known");970		return -1;971	}972 973	ret = pm_runtime_resume_and_get(cpsw->dev);974	if (ret < 0)975		return ret;976 977	bw = qopt->enable ? qopt->idleslope : 0;978	ret = cpsw_set_fifo_rlimit(priv, fifo, bw);979	if (ret) {980		priv->shp_cfg_speed = prev_speed;981		prev_speed = 0;982	}983 984	if (bw && prev_speed)985		dev_warn(priv->dev,986			 "Speed was changed, CBS shaper speeds are changed!");987 988	pm_runtime_put_sync(cpsw->dev);989	return ret;990}991 992static int cpsw_set_mqprio(struct net_device *ndev, void *type_data)993{994	struct tc_mqprio_qopt_offload *mqprio = type_data;995	struct cpsw_priv *priv = netdev_priv(ndev);996	struct cpsw_common *cpsw = priv->cpsw;997	int fifo, num_tc, count, offset;998	struct cpsw_slave *slave;999	u32 tx_prio_map = 0;1000	int i, tc, ret;1001 1002	num_tc = mqprio->qopt.num_tc;1003	if (num_tc > CPSW_TC_NUM)1004		return -EINVAL;1005 1006	if (mqprio->mode != TC_MQPRIO_MODE_DCB)1007		return -EINVAL;1008 1009	ret = pm_runtime_resume_and_get(cpsw->dev);1010	if (ret < 0)1011		return ret;1012 1013	if (num_tc) {1014		for (i = 0; i < 8; i++) {1015			tc = mqprio->qopt.prio_tc_map[i];1016			fifo = cpsw_tc_to_fifo(tc, num_tc);1017			tx_prio_map |= fifo << (4 * i);1018		}1019 1020		netdev_set_num_tc(ndev, num_tc);1021		for (i = 0; i < num_tc; i++) {1022			count = mqprio->qopt.count[i];1023			offset = mqprio->qopt.offset[i];1024			netdev_set_tc_queue(ndev, i, count, offset);1025		}1026	}1027 1028	if (!mqprio->qopt.hw) {1029		/* restore default configuration */1030		netdev_reset_tc(ndev);1031		tx_prio_map = TX_PRIORITY_MAPPING;1032	}1033 1034	priv->mqprio_hw = mqprio->qopt.hw;1035 1036	offset = cpsw->version == CPSW_VERSION_1 ?1037		 CPSW1_TX_PRI_MAP : CPSW2_TX_PRI_MAP;1038 1039	slave = &cpsw->slaves[cpsw_slave_index(cpsw, priv)];1040	slave_write(slave, tx_prio_map, offset);1041 1042	pm_runtime_put_sync(cpsw->dev);1043 1044	return 0;1045}1046 1047static int cpsw_qos_setup_tc_block(struct net_device *ndev, struct flow_block_offload *f);1048 1049int cpsw_ndo_setup_tc(struct net_device *ndev, enum tc_setup_type type,1050		      void *type_data)1051{1052	switch (type) {1053	case TC_SETUP_QDISC_CBS:1054		return cpsw_set_cbs(ndev, type_data);1055 1056	case TC_SETUP_QDISC_MQPRIO:1057		return cpsw_set_mqprio(ndev, type_data);1058 1059	case TC_SETUP_BLOCK:1060		return cpsw_qos_setup_tc_block(ndev, type_data);1061 1062	default:1063		return -EOPNOTSUPP;1064	}1065}1066 1067void cpsw_cbs_resume(struct cpsw_slave *slave, struct cpsw_priv *priv)1068{1069	int fifo, bw;1070 1071	for (fifo = CPSW_FIFO_SHAPERS_NUM; fifo > 0; fifo--) {1072		bw = priv->fifo_bw[fifo];1073		if (!bw)1074			continue;1075 1076		cpsw_set_fifo_rlimit(priv, fifo, bw);1077	}1078}1079 1080void cpsw_mqprio_resume(struct cpsw_slave *slave, struct cpsw_priv *priv)1081{1082	struct cpsw_common *cpsw = priv->cpsw;1083	u32 tx_prio_map = 0;1084	int i, tc, fifo;1085	u32 tx_prio_rg;1086 1087	if (!priv->mqprio_hw)1088		return;1089 1090	for (i = 0; i < 8; i++) {1091		tc = netdev_get_prio_tc_map(priv->ndev, i);1092		fifo = CPSW_FIFO_SHAPERS_NUM - tc;1093		tx_prio_map |= fifo << (4 * i);1094	}1095 1096	tx_prio_rg = cpsw->version == CPSW_VERSION_1 ?1097		     CPSW1_TX_PRI_MAP : CPSW2_TX_PRI_MAP;1098 1099	slave_write(slave, tx_prio_map, tx_prio_rg);1100}1101 1102int cpsw_fill_rx_channels(struct cpsw_priv *priv)1103{1104	struct cpsw_common *cpsw = priv->cpsw;1105	struct cpsw_meta_xdp *xmeta;1106	struct page_pool *pool;1107	struct page *page;1108	int ch_buf_num;1109	int ch, i, ret;1110	dma_addr_t dma;1111 1112	for (ch = 0; ch < cpsw->rx_ch_num; ch++) {1113		pool = cpsw->page_pool[ch];1114		ch_buf_num = cpdma_chan_get_rx_buf_num(cpsw->rxv[ch].ch);1115		for (i = 0; i < ch_buf_num; i++) {1116			page = page_pool_dev_alloc_pages(pool);1117			if (!page) {1118				cpsw_err(priv, ifup, "allocate rx page err\n");1119				return -ENOMEM;1120			}1121 1122			xmeta = page_address(page) + CPSW_XMETA_OFFSET;1123			xmeta->ndev = priv->ndev;1124			xmeta->ch = ch;1125 1126			dma = page_pool_get_dma_addr(page) + CPSW_HEADROOM_NA;1127			ret = cpdma_chan_idle_submit_mapped(cpsw->rxv[ch].ch,1128							    page, dma,1129							    cpsw->rx_packet_max,1130							    0);1131			if (ret < 0) {1132				cpsw_err(priv, ifup,1133					 "cannot submit page to channel %d rx, error %d\n",1134					 ch, ret);1135				page_pool_recycle_direct(pool, page);1136				return ret;1137			}1138		}1139 1140		cpsw_info(priv, ifup, "ch %d rx, submitted %d descriptors\n",1141			  ch, ch_buf_num);1142	}1143 1144	return 0;1145}1146 1147static struct page_pool *cpsw_create_page_pool(struct cpsw_common *cpsw,1148					       int size)1149{1150	struct page_pool_params pp_params = {};1151	struct page_pool *pool;1152 1153	pp_params.order = 0;1154	pp_params.flags = PP_FLAG_DMA_MAP;1155	pp_params.pool_size = size;1156	pp_params.nid = NUMA_NO_NODE;1157	pp_params.dma_dir = DMA_BIDIRECTIONAL;1158	pp_params.dev = cpsw->dev;1159 1160	pool = page_pool_create(&pp_params);1161	if (IS_ERR(pool))1162		dev_err(cpsw->dev, "cannot create rx page pool\n");1163 1164	return pool;1165}1166 1167static int cpsw_create_rx_pool(struct cpsw_common *cpsw, int ch)1168{1169	struct page_pool *pool;1170	int ret = 0, pool_size;1171 1172	pool_size = cpdma_chan_get_rx_buf_num(cpsw->rxv[ch].ch);1173	pool = cpsw_create_page_pool(cpsw, pool_size);1174	if (IS_ERR(pool))1175		ret = PTR_ERR(pool);1176	else1177		cpsw->page_pool[ch] = pool;1178 1179	return ret;1180}1181 1182static int cpsw_ndev_create_xdp_rxq(struct cpsw_priv *priv, int ch)1183{1184	struct cpsw_common *cpsw = priv->cpsw;1185	struct xdp_rxq_info *rxq;1186	struct page_pool *pool;1187	int ret;1188 1189	pool = cpsw->page_pool[ch];1190	rxq = &priv->xdp_rxq[ch];1191 1192	ret = xdp_rxq_info_reg(rxq, priv->ndev, ch, 0);1193	if (ret)1194		return ret;1195 1196	ret = xdp_rxq_info_reg_mem_model(rxq, MEM_TYPE_PAGE_POOL, pool);1197	if (ret)1198		xdp_rxq_info_unreg(rxq);1199 1200	return ret;1201}1202 1203static void cpsw_ndev_destroy_xdp_rxq(struct cpsw_priv *priv, int ch)1204{1205	struct xdp_rxq_info *rxq = &priv->xdp_rxq[ch];1206 1207	if (!xdp_rxq_info_is_reg(rxq))1208		return;1209 1210	xdp_rxq_info_unreg(rxq);1211}1212 1213void cpsw_destroy_xdp_rxqs(struct cpsw_common *cpsw)1214{1215	struct net_device *ndev;1216	int i, ch;1217 1218	for (ch = 0; ch < cpsw->rx_ch_num; ch++) {1219		for (i = 0; i < cpsw->data.slaves; i++) {1220			ndev = cpsw->slaves[i].ndev;1221			if (!ndev)1222				continue;1223 1224			cpsw_ndev_destroy_xdp_rxq(netdev_priv(ndev), ch);1225		}1226 1227		page_pool_destroy(cpsw->page_pool[ch]);1228		cpsw->page_pool[ch] = NULL;1229	}1230}1231 1232int cpsw_create_xdp_rxqs(struct cpsw_common *cpsw)1233{1234	struct net_device *ndev;1235	int i, ch, ret;1236 1237	for (ch = 0; ch < cpsw->rx_ch_num; ch++) {1238		ret = cpsw_create_rx_pool(cpsw, ch);1239		if (ret)1240			goto err_cleanup;1241 1242		/* using same page pool is allowed as no running rx handlers1243		 * simultaneously for both ndevs1244		 */1245		for (i = 0; i < cpsw->data.slaves; i++) {1246			ndev = cpsw->slaves[i].ndev;1247			if (!ndev)1248				continue;1249 1250			ret = cpsw_ndev_create_xdp_rxq(netdev_priv(ndev), ch);1251			if (ret)1252				goto err_cleanup;1253		}1254	}1255 1256	return 0;1257 1258err_cleanup:1259	cpsw_destroy_xdp_rxqs(cpsw);1260 1261	return ret;1262}1263 1264static int cpsw_xdp_prog_setup(struct cpsw_priv *priv, struct netdev_bpf *bpf)1265{1266	struct bpf_prog *prog = bpf->prog;1267 1268	if (!priv->xdpi.prog && !prog)1269		return 0;1270 1271	WRITE_ONCE(priv->xdp_prog, prog);1272 1273	xdp_attachment_setup(&priv->xdpi, bpf);1274 1275	return 0;1276}1277 1278int cpsw_ndo_bpf(struct net_device *ndev, struct netdev_bpf *bpf)1279{1280	struct cpsw_priv *priv = netdev_priv(ndev);1281 1282	switch (bpf->command) {1283	case XDP_SETUP_PROG:1284		return cpsw_xdp_prog_setup(priv, bpf);1285 1286	default:1287		return -EINVAL;1288	}1289}1290 1291int cpsw_xdp_tx_frame(struct cpsw_priv *priv, struct xdp_frame *xdpf,1292		      struct page *page, int port)1293{1294	struct cpsw_common *cpsw = priv->cpsw;1295	struct cpsw_meta_xdp *xmeta;1296	struct cpdma_chan *txch;1297	dma_addr_t dma;1298	int ret;1299 1300	xmeta = (void *)xdpf + CPSW_XMETA_OFFSET;1301	xmeta->ndev = priv->ndev;1302	xmeta->ch = 0;1303	txch = cpsw->txv[0].ch;1304 1305	if (page) {1306		dma = page_pool_get_dma_addr(page);1307		dma += xdpf->headroom + sizeof(struct xdp_frame);1308		ret = cpdma_chan_submit_mapped(txch, cpsw_xdpf_to_handle(xdpf),1309					       dma, xdpf->len, port);1310	} else {1311		if (sizeof(*xmeta) > xdpf->headroom)1312			return -EINVAL;1313 1314		ret = cpdma_chan_submit(txch, cpsw_xdpf_to_handle(xdpf),1315					xdpf->data, xdpf->len, port);1316	}1317 1318	if (ret)1319		priv->ndev->stats.tx_dropped++;1320 1321	return ret;1322}1323 1324int cpsw_run_xdp(struct cpsw_priv *priv, int ch, struct xdp_buff *xdp,1325		 struct page *page, int port, int *len)1326{1327	struct cpsw_common *cpsw = priv->cpsw;1328	struct net_device *ndev = priv->ndev;1329	int ret = CPSW_XDP_CONSUMED;1330	struct xdp_frame *xdpf;1331	struct bpf_prog *prog;1332	u32 act;1333 1334	prog = READ_ONCE(priv->xdp_prog);1335	if (!prog)1336		return CPSW_XDP_PASS;1337 1338	act = bpf_prog_run_xdp(prog, xdp);1339	/* XDP prog might have changed packet data and boundaries */1340	*len = xdp->data_end - xdp->data;1341 1342	switch (act) {1343	case XDP_PASS:1344		ret = CPSW_XDP_PASS;1345		goto out;1346	case XDP_TX:1347		xdpf = xdp_convert_buff_to_frame(xdp);1348		if (unlikely(!xdpf))1349			goto drop;1350 1351		if (cpsw_xdp_tx_frame(priv, xdpf, page, port))1352			xdp_return_frame_rx_napi(xdpf);1353		break;1354	case XDP_REDIRECT:1355		if (xdp_do_redirect(ndev, xdp, prog))1356			goto drop;1357 1358		/*  Have to flush here, per packet, instead of doing it in bulk1359		 *  at the end of the napi handler. The RX devices on this1360		 *  particular hardware is sharing a common queue, so the1361		 *  incoming device might change per packet.1362		 */1363		xdp_do_flush();1364		break;1365	default:1366		bpf_warn_invalid_xdp_action(ndev, prog, act);1367		fallthrough;1368	case XDP_ABORTED:1369		trace_xdp_exception(ndev, prog, act);1370		fallthrough;	/* handle aborts by dropping packet */1371	case XDP_DROP:1372		ndev->stats.rx_bytes += *len;1373		ndev->stats.rx_packets++;1374		goto drop;1375	}1376 1377	ndev->stats.rx_bytes += *len;1378	ndev->stats.rx_packets++;1379out:1380	return ret;1381drop:1382	page_pool_recycle_direct(cpsw->page_pool[ch], page);1383	return ret;1384}1385 1386static int cpsw_qos_clsflower_add_policer(struct cpsw_priv *priv,1387					  struct netlink_ext_ack *extack,1388					  struct flow_cls_offload *cls,1389					  u64 rate_pkt_ps)1390{1391	struct flow_rule *rule = flow_cls_offload_flow_rule(cls);1392	struct flow_dissector *dissector = rule->match.dissector;1393	static const u8 mc_mac[] = {0x01, 0x00, 0x00, 0x00, 0x00, 0x00};1394	struct flow_match_eth_addrs match;1395	u32 port_id;1396	int ret;1397 1398	if (dissector->used_keys &1399	    ~(BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) |1400	      BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) |1401	      BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS))) {1402		NL_SET_ERR_MSG_MOD(extack,1403				   "Unsupported keys used");1404		return -EOPNOTSUPP;1405	}1406 1407	if (flow_rule_match_has_control_flags(rule, extack))1408		return -EOPNOTSUPP;1409 1410	if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {1411		NL_SET_ERR_MSG_MOD(extack, "Not matching on eth address");1412		return -EOPNOTSUPP;1413	}1414 1415	flow_rule_match_eth_addrs(rule, &match);1416 1417	if (!is_zero_ether_addr(match.mask->src)) {1418		NL_SET_ERR_MSG_MOD(extack,1419				   "Matching on source MAC not supported");1420		return -EOPNOTSUPP;1421	}1422 1423	port_id = cpsw_slave_index(priv->cpsw, priv) + 1;1424 1425	if (is_broadcast_ether_addr(match.key->dst) &&1426	    is_broadcast_ether_addr(match.mask->dst)) {1427		ret = cpsw_ale_rx_ratelimit_bc(priv->cpsw->ale, port_id, rate_pkt_ps);1428		if (ret)1429			return ret;1430 1431		priv->ale_bc_ratelimit.cookie = cls->cookie;1432		priv->ale_bc_ratelimit.rate_packet_ps = rate_pkt_ps;1433	} else if (ether_addr_equal_unaligned(match.key->dst, mc_mac) &&1434		   ether_addr_equal_unaligned(match.mask->dst, mc_mac)) {1435		ret = cpsw_ale_rx_ratelimit_mc(priv->cpsw->ale, port_id, rate_pkt_ps);1436		if (ret)1437			return ret;1438 1439		priv->ale_mc_ratelimit.cookie = cls->cookie;1440		priv->ale_mc_ratelimit.rate_packet_ps = rate_pkt_ps;1441	} else {1442		NL_SET_ERR_MSG_MOD(extack, "Not supported matching key");1443		return -EOPNOTSUPP;1444	}1445 1446	return 0;1447}1448 1449static int cpsw_qos_clsflower_policer_validate(const struct flow_action *action,1450					       const struct flow_action_entry *act,1451					       struct netlink_ext_ack *extack)1452{1453	if (act->police.exceed.act_id != FLOW_ACTION_DROP) {1454		NL_SET_ERR_MSG_MOD(extack,1455				   "Offload not supported when exceed action is not drop");1456		return -EOPNOTSUPP;1457	}1458 1459	if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&1460	    act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {1461		NL_SET_ERR_MSG_MOD(extack,1462				   "Offload not supported when conform action is not pipe or ok");1463		return -EOPNOTSUPP;1464	}1465 1466	if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&1467	    !flow_action_is_last_entry(action, act)) {1468		NL_SET_ERR_MSG_MOD(extack,1469				   "Offload not supported when conform action is ok, but action is not last");1470		return -EOPNOTSUPP;1471	}1472 1473	if (act->police.rate_bytes_ps || act->police.peakrate_bytes_ps ||1474	    act->police.avrate || act->police.overhead) {1475		NL_SET_ERR_MSG_MOD(extack,1476				   "Offload not supported when bytes per second/peakrate/avrate/overhead is configured");1477		return -EOPNOTSUPP;1478	}1479 1480	return 0;1481}1482 1483static int cpsw_qos_configure_clsflower(struct cpsw_priv *priv, struct flow_cls_offload *cls)1484{1485	struct flow_rule *rule = flow_cls_offload_flow_rule(cls);1486	struct netlink_ext_ack *extack = cls->common.extack;1487	const struct flow_action_entry *act;1488	int i, ret;1489 1490	flow_action_for_each(i, act, &rule->action) {1491		switch (act->id) {1492		case FLOW_ACTION_POLICE:1493			ret = cpsw_qos_clsflower_policer_validate(&rule->action, act, extack);1494			if (ret)1495				return ret;1496 1497			return cpsw_qos_clsflower_add_policer(priv, extack, cls,1498							      act->police.rate_pkt_ps);1499		default:1500			NL_SET_ERR_MSG_MOD(extack, "Action not supported");1501			return -EOPNOTSUPP;1502		}1503	}1504	return -EOPNOTSUPP;1505}1506 1507static int cpsw_qos_delete_clsflower(struct cpsw_priv *priv, struct flow_cls_offload *cls)1508{1509	u32 port_id = cpsw_slave_index(priv->cpsw, priv) + 1;1510 1511	if (cls->cookie == priv->ale_bc_ratelimit.cookie) {1512		priv->ale_bc_ratelimit.cookie = 0;1513		priv->ale_bc_ratelimit.rate_packet_ps = 0;1514		cpsw_ale_rx_ratelimit_bc(priv->cpsw->ale, port_id, 0);1515	}1516 1517	if (cls->cookie == priv->ale_mc_ratelimit.cookie) {1518		priv->ale_mc_ratelimit.cookie = 0;1519		priv->ale_mc_ratelimit.rate_packet_ps = 0;1520		cpsw_ale_rx_ratelimit_mc(priv->cpsw->ale, port_id, 0);1521	}1522 1523	return 0;1524}1525 1526static int cpsw_qos_setup_tc_clsflower(struct cpsw_priv *priv, struct flow_cls_offload *cls_flower)1527{1528	switch (cls_flower->command) {1529	case FLOW_CLS_REPLACE:1530		return cpsw_qos_configure_clsflower(priv, cls_flower);1531	case FLOW_CLS_DESTROY:1532		return cpsw_qos_delete_clsflower(priv, cls_flower);1533	default:1534		return -EOPNOTSUPP;1535	}1536}1537 1538static int cpsw_qos_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)1539{1540	struct cpsw_priv *priv = cb_priv;1541	int ret;1542 1543	if (!tc_cls_can_offload_and_chain0(priv->ndev, type_data))1544		return -EOPNOTSUPP;1545 1546	ret = pm_runtime_get_sync(priv->dev);1547	if (ret < 0) {1548		pm_runtime_put_noidle(priv->dev);1549		return ret;1550	}1551 1552	switch (type) {1553	case TC_SETUP_CLSFLOWER:1554		ret = cpsw_qos_setup_tc_clsflower(priv, type_data);1555		break;1556	default:1557		ret = -EOPNOTSUPP;1558	}1559 1560	pm_runtime_put(priv->dev);1561	return ret;1562}1563 1564static LIST_HEAD(cpsw_qos_block_cb_list);1565 1566static int cpsw_qos_setup_tc_block(struct net_device *ndev, struct flow_block_offload *f)1567{1568	struct cpsw_priv *priv = netdev_priv(ndev);1569 1570	return flow_block_cb_setup_simple(f, &cpsw_qos_block_cb_list,1571					  cpsw_qos_setup_tc_block_cb,1572					  priv, priv, true);1573}1574 1575void cpsw_qos_clsflower_resume(struct cpsw_priv *priv)1576{1577	u32 port_id = cpsw_slave_index(priv->cpsw, priv) + 1;1578 1579	if (priv->ale_bc_ratelimit.cookie)1580		cpsw_ale_rx_ratelimit_bc(priv->cpsw->ale, port_id,1581					 priv->ale_bc_ratelimit.rate_packet_ps);1582 1583	if (priv->ale_mc_ratelimit.cookie)1584		cpsw_ale_rx_ratelimit_mc(priv->cpsw->ale, port_id,1585					 priv->ale_mc_ratelimit.rate_packet_ps);1586}1587