1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Texas Instruments Ethernet Switch Driver
   4 *
   5 * Copyright (C) 2012 Texas Instruments
   6 *
 
 
 
 
 
 
 
 
   7 */
   8
   9#include <linux/kernel.h>
  10#include <linux/io.h>
  11#include <linux/clk.h>
  12#include <linux/timer.h>
  13#include <linux/module.h>
  14#include <linux/platform_device.h>
  15#include <linux/irqreturn.h>
  16#include <linux/interrupt.h>
  17#include <linux/if_ether.h>
  18#include <linux/etherdevice.h>
  19#include <linux/netdevice.h>
  20#include <linux/net_tstamp.h>
  21#include <linux/phy.h>
  22#include <linux/phy/phy.h>
  23#include <linux/workqueue.h>
  24#include <linux/delay.h>
  25#include <linux/pm_runtime.h>
  26#include <linux/gpio/consumer.h>
  27#include <linux/of.h>
  28#include <linux/of_mdio.h>
  29#include <linux/of_net.h>
  30#include <linux/of_platform.h>
  31#include <linux/if_vlan.h>
  32#include <linux/kmemleak.h>
  33#include <linux/sys_soc.h>
  34#include <net/page_pool/helpers.h>
  35#include <linux/bpf.h>
  36#include <linux/bpf_trace.h>
  37
  38#include <linux/pinctrl/consumer.h>
  39#include <net/pkt_cls.h>
  40
  41#include "cpsw.h"
  42#include "cpsw_ale.h"
  43#include "cpsw_priv.h"
  44#include "cpsw_sl.h"
  45#include "cpts.h"
  46#include "davinci_cpdma.h"
  47
  48#include <net/pkt_sched.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  49
  50static int debug_level;
  51module_param(debug_level, int, 0);
  52MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
  53
  54static int ale_ageout = 10;
  55module_param(ale_ageout, int, 0);
  56MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
  57
  58static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
  59module_param(rx_packet_max, int, 0);
  60MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
  61
  62static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
  63module_param(descs_pool_size, int, 0444);
  64MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool");
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  65
 
 
  66#define for_each_slave(priv, func, arg...)				\
  67	do {								\
  68		struct cpsw_slave *slave;				\
  69		struct cpsw_common *cpsw = (priv)->cpsw;		\
  70		int n;							\
  71		if (cpsw->data.dual_emac)				\
  72			(func)((cpsw)->slaves + priv->emac_port, ##arg);\
  73		else							\
  74			for (n = cpsw->data.slaves,			\
  75					slave = cpsw->slaves;		\
  76					n; n--)				\
  77				(func)(slave++, ##arg);			\
  78	} while (0)
  79
  80static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
  81				 struct cpsw_priv *priv)
  82{
  83	return cpsw->data.dual_emac ? priv->emac_port : cpsw->data.active_slave;
  84}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  85
  86static int cpsw_get_slave_port(u32 slave_num)
  87{
  88	return slave_num + 1;
  89}
  90
  91static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
  92				    __be16 proto, u16 vid);
  93
  94static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
  95{
  96	struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
  97	struct cpsw_ale *ale = cpsw->ale;
  98	int i;
  99
 100	if (cpsw->data.dual_emac) {
 101		bool flag = false;
 102
 103		/* Enabling promiscuous mode for one interface will be
 104		 * common for both the interface as the interface shares
 105		 * the same hardware resource.
 106		 */
 107		for (i = 0; i < cpsw->data.slaves; i++)
 108			if (cpsw->slaves[i].ndev->flags & IFF_PROMISC)
 109				flag = true;
 110
 111		if (!enable && flag) {
 112			enable = true;
 113			dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
 114		}
 115
 116		if (enable) {
 117			/* Enable Bypass */
 118			cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
 119
 120			dev_dbg(&ndev->dev, "promiscuity enabled\n");
 121		} else {
 122			/* Disable Bypass */
 123			cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
 124			dev_dbg(&ndev->dev, "promiscuity disabled\n");
 125		}
 126	} else {
 127		if (enable) {
 128			unsigned long timeout = jiffies + HZ;
 129
 130			/* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
 131			for (i = 0; i <= cpsw->data.slaves; i++) {
 132				cpsw_ale_control_set(ale, i,
 133						     ALE_PORT_NOLEARN, 1);
 134				cpsw_ale_control_set(ale, i,
 135						     ALE_PORT_NO_SA_UPDATE, 1);
 136			}
 137
 138			/* Clear All Untouched entries */
 139			cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 140			do {
 141				cpu_relax();
 142				if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
 143					break;
 144			} while (time_after(timeout, jiffies));
 145			cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 146
 147			/* Clear all mcast from ALE */
 148			cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
 149			__hw_addr_ref_unsync_dev(&ndev->mc, ndev, NULL);
 150
 151			/* Flood All Unicast Packets to Host port */
 152			cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
 153			dev_dbg(&ndev->dev, "promiscuity enabled\n");
 154		} else {
 155			/* Don't Flood All Unicast Packets to Host port */
 156			cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
 157
 158			/* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
 159			for (i = 0; i <= cpsw->data.slaves; i++) {
 160				cpsw_ale_control_set(ale, i,
 161						     ALE_PORT_NOLEARN, 0);
 162				cpsw_ale_control_set(ale, i,
 163						     ALE_PORT_NO_SA_UPDATE, 0);
 164			}
 165			dev_dbg(&ndev->dev, "promiscuity disabled\n");
 166		}
 167	}
 168}
 169
 170/**
 171 * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
 172 * if it's not deleted
 173 * @ndev: device to sync
 174 * @addr: address to be added or deleted
 175 * @vid: vlan id, if vid < 0 set/unset address for real device
 176 * @add: add address if the flag is set or remove otherwise
 177 */
 178static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
 179		       int vid, int add)
 180{
 181	struct cpsw_priv *priv = netdev_priv(ndev);
 182	struct cpsw_common *cpsw = priv->cpsw;
 183	int mask, flags, ret;
 184
 185	if (vid < 0) {
 186		if (cpsw->data.dual_emac)
 187			vid = cpsw->slaves[priv->emac_port].port_vlan;
 188		else
 189			vid = 0;
 190	}
 191
 192	mask = cpsw->data.dual_emac ? ALE_PORT_HOST : ALE_ALL_PORTS;
 193	flags = vid ? ALE_VLAN : 0;
 194
 195	if (add)
 196		ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
 197	else
 198		ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
 199
 200	return ret;
 201}
 
 
 
 
 
 
 
 202
 203static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 204{
 205	struct addr_sync_ctx *sync_ctx = ctx;
 206	struct netdev_hw_addr *ha;
 207	int found = 0, ret = 0;
 208
 209	if (!vdev || !(vdev->flags & IFF_UP))
 210		return 0;
 211
 212	/* vlan address is relevant if its sync_cnt != 0 */
 213	netdev_for_each_mc_addr(ha, vdev) {
 214		if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 215			found = ha->sync_cnt;
 216			break;
 217		}
 218	}
 219
 220	if (found)
 221		sync_ctx->consumed++;
 222
 223	if (sync_ctx->flush) {
 224		if (!found)
 225			cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 226		return 0;
 227	}
 
 228
 229	if (found)
 230		ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
 
 
 231
 232	return ret;
 
 233}
 234
 235static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 236{
 237	struct addr_sync_ctx sync_ctx;
 238	int ret;
 239
 240	sync_ctx.consumed = 0;
 241	sync_ctx.addr = addr;
 242	sync_ctx.ndev = ndev;
 243	sync_ctx.flush = 0;
 244
 245	ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 246	if (sync_ctx.consumed < num && !ret)
 247		ret = cpsw_set_mc(ndev, addr, -1, 1);
 248
 249	return ret;
 250}
 251
 252static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 253{
 254	struct addr_sync_ctx sync_ctx;
 
 
 
 255
 256	sync_ctx.consumed = 0;
 257	sync_ctx.addr = addr;
 258	sync_ctx.ndev = ndev;
 259	sync_ctx.flush = 1;
 260
 261	vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 262	if (sync_ctx.consumed == num)
 263		cpsw_set_mc(ndev, addr, -1, 0);
 264
 265	return 0;
 
 
 
 266}
 267
 268static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 269{
 270	struct addr_sync_ctx *sync_ctx = ctx;
 271	struct netdev_hw_addr *ha;
 272	int found = 0;
 
 
 
 273
 274	if (!vdev || !(vdev->flags & IFF_UP))
 275		return 0;
 276
 277	/* vlan address is relevant if its sync_cnt != 0 */
 278	netdev_for_each_mc_addr(ha, vdev) {
 279		if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 280			found = ha->sync_cnt;
 281			break;
 
 
 
 
 
 282		}
 283	}
 284
 285	if (!found)
 286		return 0;
 287
 288	sync_ctx->consumed++;
 289	cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 290	return 0;
 291}
 
 
 
 292
 293static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
 294{
 295	struct addr_sync_ctx sync_ctx;
 
 296
 297	sync_ctx.addr = addr;
 298	sync_ctx.ndev = ndev;
 299	sync_ctx.consumed = 0;
 
 
 
 
 
 
 
 
 
 
 
 300
 301	vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
 302	if (sync_ctx.consumed < num)
 303		cpsw_set_mc(ndev, addr, -1, 0);
 
 
 304
 305	return 0;
 
 
 
 
 306}
 307
 308static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 309{
 310	struct cpsw_priv *priv = netdev_priv(ndev);
 
 311	struct cpsw_common *cpsw = priv->cpsw;
 312	int slave_port = -1;
 
 
 
 
 
 
 
 
 
 313
 314	if (cpsw->data.dual_emac)
 315		slave_port = priv->emac_port + 1;
 
 316
 317	if (ndev->flags & IFF_PROMISC) {
 318		/* Enable promiscuous mode */
 319		cpsw_set_promiscious(ndev, true);
 320		cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
 321		return;
 
 322	} else {
 323		/* Disable promiscuous mode */
 324		cpsw_set_promiscious(ndev, false);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 325	}
 326
 327	/* Restore allmulti on vlans if necessary */
 328	cpsw_ale_set_allmulti(cpsw->ale,
 329			      ndev->flags & IFF_ALLMULTI, slave_port);
 330
 331	/* add/remove mcast address either for real netdev or for vlan */
 332	__hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
 333			       cpsw_del_mc_addr);
 
 
 
 
 
 
 
 334}
 335
 336static unsigned int cpsw_rxbuf_total_len(unsigned int len)
 337{
 338	len += CPSW_HEADROOM_NA;
 339	len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 
 
 
 
 
 
 
 340
 341	return SKB_DATA_ALIGN(len);
 
 342}
 343
 344static void cpsw_rx_handler(void *token, int len, int status)
 345{
 346	struct page		*new_page, *page = token;
 347	void			*pa = page_address(page);
 348	struct cpsw_meta_xdp	*xmeta = pa + CPSW_XMETA_OFFSET;
 349	struct cpsw_common	*cpsw = ndev_to_cpsw(xmeta->ndev);
 350	int			pkt_size = cpsw->rx_packet_max;
 351	int			ret = 0, port, ch = xmeta->ch;
 352	int			headroom = CPSW_HEADROOM_NA;
 353	struct net_device	*ndev = xmeta->ndev;
 354	struct cpsw_priv	*priv;
 355	struct page_pool	*pool;
 356	struct sk_buff		*skb;
 357	struct xdp_buff		xdp;
 358	dma_addr_t		dma;
 359
 360	if (cpsw->data.dual_emac && status >= 0) {
 361		port = CPDMA_RX_SOURCE_PORT(status);
 362		if (port)
 363			ndev = cpsw->slaves[--port].ndev;
 364	}
 365
 366	priv = netdev_priv(ndev);
 367	pool = cpsw->page_pool[ch];
 368	if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
 369		/* In dual emac mode check for all interfaces */
 370		if (cpsw->data.dual_emac && cpsw->usage_count &&
 371		    (status >= 0)) {
 372			/* The packet received is for the interface which
 373			 * is already down and the other interface is up
 374			 * and running, instead of freeing which results
 375			 * in reducing of the number of rx descriptor in
 376			 * DMA engine, requeue page back to cpdma.
 377			 */
 378			new_page = page;
 379			goto requeue;
 380		}
 381
 382		/* the interface is going down, pages are purged */
 383		page_pool_recycle_direct(pool, page);
 384		return;
 385	}
 386
 387	new_page = page_pool_dev_alloc_pages(pool);
 388	if (unlikely(!new_page)) {
 389		new_page = page;
 390		ndev->stats.rx_dropped++;
 391		goto requeue;
 392	}
 393
 394	if (priv->xdp_prog) {
 395		int size = len;
 
 
 
 
 396
 397		xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
 398		if (status & CPDMA_RX_VLAN_ENCAP) {
 399			headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 400			size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 401		}
 
 402
 403		xdp_prepare_buff(&xdp, pa, headroom, size, false);
 
 404
 405		port = priv->emac_port + cpsw->data.dual_emac;
 406		ret = cpsw_run_xdp(priv, ch, &xdp, page, port, &len);
 407		if (ret != CPSW_XDP_PASS)
 408			goto requeue;
 
 
 409
 410		headroom = xdp.data - xdp.data_hard_start;
 
 
 
 
 
 
 
 
 
 
 411
 412		/* XDP prog can modify vlan tag, so can't use encap header */
 413		status &= ~CPDMA_RX_VLAN_ENCAP;
 
 414	}
 415
 416	/* pass skb to netstack if no XDP prog or returned XDP_PASS */
 417	skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 418	if (!skb) {
 419		ndev->stats.rx_dropped++;
 420		page_pool_recycle_direct(pool, page);
 421		goto requeue;
 
 422	}
 423
 424	skb_reserve(skb, headroom);
 425	skb_put(skb, len);
 426	skb->dev = ndev;
 427	if (status & CPDMA_RX_VLAN_ENCAP)
 428		cpsw_rx_vlan_encap(skb);
 429	if (priv->rx_ts_enabled)
 430		cpts_rx_timestamp(cpsw->cpts, skb);
 431	skb->protocol = eth_type_trans(skb, ndev);
 432
 433	/* mark skb for recycling */
 434	skb_mark_for_recycle(skb);
 435	netif_receive_skb(skb);
 436
 437	ndev->stats.rx_bytes += len;
 438	ndev->stats.rx_packets++;
 
 
 439
 440requeue:
 441	xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 442	xmeta->ndev = ndev;
 443	xmeta->ch = ch;
 444
 445	dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;
 446	ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 447				       pkt_size, 0);
 448	if (ret < 0) {
 449		WARN_ON(ret == -ENOMEM);
 450		page_pool_recycle_direct(pool, new_page);
 451	}
 452}
 453
 454static void _cpsw_adjust_link(struct cpsw_slave *slave,
 455			      struct cpsw_priv *priv, bool *link)
 456{
 457	struct phy_device	*phy = slave->phy;
 458	u32			mac_control = 0;
 459	u32			slave_port;
 460	struct cpsw_common *cpsw = priv->cpsw;
 461
 462	if (!phy)
 463		return;
 464
 465	slave_port = cpsw_get_slave_port(slave->slave_num);
 466
 467	if (phy->link) {
 468		mac_control = CPSW_SL_CTL_GMII_EN;
 
 
 
 
 469
 470		if (phy->speed == 1000)
 471			mac_control |= CPSW_SL_CTL_GIG;
 472		if (phy->duplex)
 473			mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 474
 475		/* set speed_in input in case RMII mode is used in 100Mbps */
 476		if (phy->speed == 100)
 477			mac_control |= CPSW_SL_CTL_IFCTL_A;
 478		/* in band mode only works in 10Mbps RGMII mode */
 479		else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 480			mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 481
 482		if (priv->rx_pause)
 483			mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 484
 485		if (priv->tx_pause)
 486			mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 487
 488		if (mac_control != slave->mac_control)
 489			cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 490
 491		/* enable forwarding */
 492		cpsw_ale_control_set(cpsw->ale, slave_port,
 493				     ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 494
 495		*link = true;
 496
 497		if (priv->shp_cfg_speed &&
 498		    priv->shp_cfg_speed != slave->phy->speed &&
 499		    !cpsw_shp_is_off(priv))
 500			dev_warn(priv->dev,
 501				 "Speed was changed, CBS shaper speeds are changed!");
 502	} else {
 503		mac_control = 0;
 504		/* disable forwarding */
 505		cpsw_ale_control_set(cpsw->ale, slave_port,
 506				     ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 507
 508		cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 509
 510		cpsw_sl_ctl_reset(slave->mac_sl);
 511	}
 512
 513	if (mac_control != slave->mac_control)
 514		phy_print_status(phy);
 
 
 515
 516	slave->mac_control = mac_control;
 517}
 518
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 519static void cpsw_adjust_link(struct net_device *ndev)
 520{
 521	struct cpsw_priv	*priv = netdev_priv(ndev);
 522	struct cpsw_common	*cpsw = priv->cpsw;
 523	bool			link = false;
 524
 525	for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 526
 527	if (link) {
 528		if (cpsw_need_resplit(cpsw))
 529			cpsw_split_res(cpsw);
 530
 531		netif_carrier_on(ndev);
 532		if (netif_running(ndev))
 533			netif_tx_wake_all_queues(ndev);
 534	} else {
 535		netif_carrier_off(ndev);
 536		netif_tx_stop_all_queues(ndev);
 537	}
 538}
 539
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 540static inline void cpsw_add_dual_emac_def_ale_entries(
 541		struct cpsw_priv *priv, struct cpsw_slave *slave,
 542		u32 slave_port)
 543{
 544	struct cpsw_common *cpsw = priv->cpsw;
 545	u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
 546
 547	if (cpsw->version == CPSW_VERSION_1)
 548		slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
 549	else
 550		slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
 551	cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 552			  port_mask, port_mask, 0);
 553	cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 554			   ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
 555	cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 556			   HOST_PORT_NUM, ALE_VLAN |
 557			   ALE_SECURE, slave->port_vlan);
 558	cpsw_ale_control_set(cpsw->ale, slave_port,
 559			     ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 
 
 
 
 
 
 560}
 561
 562static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 563{
 564	u32 slave_port;
 565	struct phy_device *phy;
 566	struct cpsw_common *cpsw = priv->cpsw;
 567
 568	cpsw_sl_reset(slave->mac_sl, 100);
 569	cpsw_sl_ctl_reset(slave->mac_sl);
 570
 571	/* setup priority mapping */
 572	cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 573			  RX_PRIORITY_MAPPING);
 574
 575	switch (cpsw->version) {
 576	case CPSW_VERSION_1:
 577		slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 578		/* Increase RX FIFO size to 5 for supporting fullduplex
 579		 * flow control mode
 580		 */
 581		slave_write(slave,
 582			    (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 583			    CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 584		break;
 585	case CPSW_VERSION_2:
 586	case CPSW_VERSION_3:
 587	case CPSW_VERSION_4:
 588		slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 589		/* Increase RX FIFO size to 5 for supporting fullduplex
 590		 * flow control mode
 591		 */
 592		slave_write(slave,
 593			    (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 594			    CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 595		break;
 596	}
 597
 598	/* setup max packet size, and mac address */
 599	cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 600			  cpsw->rx_packet_max);
 601	cpsw_set_slave_mac(slave, priv);
 602
 603	slave->mac_control = 0;	/* no link yet */
 604
 605	slave_port = cpsw_get_slave_port(slave->slave_num);
 606
 607	if (cpsw->data.dual_emac)
 608		cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
 609	else
 610		cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 611				   1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
 612
 613	if (slave->data->phy_node) {
 614		phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 615				 &cpsw_adjust_link, 0, slave->data->phy_if);
 616		if (!phy) {
 617			dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 618				slave->data->phy_node,
 619				slave->slave_num);
 620			return;
 621		}
 622	} else {
 623		phy = phy_connect(priv->ndev, slave->data->phy_id,
 624				 &cpsw_adjust_link, slave->data->phy_if);
 625		if (IS_ERR(phy)) {
 626			dev_err(priv->dev,
 627				"phy \"%s\" not found on slave %d, err %ld\n",
 628				slave->data->phy_id, slave->slave_num,
 629				PTR_ERR(phy));
 
 630			return;
 631		}
 632	}
 633
 634	phy->mac_managed_pm = true;
 635
 636	slave->phy = phy;
 637
 638	phy_attached_info(slave->phy);
 639
 640	phy_start(slave->phy);
 641
 642	/* Configure GMII_SEL register */
 643	if (!IS_ERR(slave->data->ifphy))
 644		phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 645				 slave->data->phy_if);
 646	else
 647		cpsw_phy_sel(cpsw->dev, slave->phy->interface,
 648			     slave->slave_num);
 649}
 650
 651static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
 652{
 653	struct cpsw_common *cpsw = priv->cpsw;
 654	const int vlan = cpsw->data.default_vlan;
 655	u32 reg;
 656	int i;
 657	int unreg_mcast_mask;
 658
 659	reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 660	       CPSW2_PORT_VLAN;
 661
 662	writel(vlan, &cpsw->host_port_regs->port_vlan);
 663
 664	for (i = 0; i < cpsw->data.slaves; i++)
 665		slave_write(cpsw->slaves + i, vlan, reg);
 666
 667	if (priv->ndev->flags & IFF_ALLMULTI)
 668		unreg_mcast_mask = ALE_ALL_PORTS;
 669	else
 670		unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
 671
 672	cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 673			  ALE_ALL_PORTS, ALE_ALL_PORTS,
 674			  unreg_mcast_mask);
 675}
 676
 677static void cpsw_init_host_port(struct cpsw_priv *priv)
 678{
 679	u32 fifo_mode;
 680	u32 control_reg;
 681	struct cpsw_common *cpsw = priv->cpsw;
 682
 683	/* soft reset the controller and initialize ale */
 684	soft_reset("cpsw", &cpsw->regs->soft_reset);
 685	cpsw_ale_start(cpsw->ale);
 686
 687	/* switch to vlan unaware mode */
 688	cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 689			     CPSW_ALE_VLAN_AWARE);
 690	control_reg = readl(&cpsw->regs->control);
 691	control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 692	writel(control_reg, &cpsw->regs->control);
 693	fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
 694		     CPSW_FIFO_NORMAL_MODE;
 695	writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
 696
 697	/* setup host port priority mapping */
 698	writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 699		       &cpsw->host_port_regs->cpdma_tx_pri_map);
 700	writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 701
 702	cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 703			     ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 704
 705	if (!cpsw->data.dual_emac) {
 706		cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 707				   0, 0);
 708		cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 709				   ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
 710	}
 711}
 712
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 713static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
 714{
 715	u32 slave_port;
 716
 717	slave_port = cpsw_get_slave_port(slave->slave_num);
 718
 719	if (!slave->phy)
 720		return;
 721	phy_stop(slave->phy);
 722	phy_disconnect(slave->phy);
 723	slave->phy = NULL;
 724	cpsw_ale_control_set(cpsw->ale, slave_port,
 725			     ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 726	cpsw_sl_reset(slave->mac_sl, 100);
 727	cpsw_sl_ctl_reset(slave->mac_sl);
 728}
 729
 730static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 731{
 732	struct cpsw_priv *priv = arg;
 733
 734	if (!vdev)
 735		return 0;
 736
 737	cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 738	return 0;
 739}
 740
 741/* restore resources after port reset */
 742static void cpsw_restore(struct cpsw_priv *priv)
 743{
 744	/* restore vlan configurations */
 745	vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 746
 747	/* restore MQPRIO offload */
 748	for_each_slave(priv, cpsw_mqprio_resume, priv);
 749
 750	/* restore CBS offload */
 751	for_each_slave(priv, cpsw_cbs_resume, priv);
 752}
 753
 754static int cpsw_ndo_open(struct net_device *ndev)
 755{
 756	struct cpsw_priv *priv = netdev_priv(ndev);
 757	struct cpsw_common *cpsw = priv->cpsw;
 758	int ret;
 759	u32 reg;
 760
 761	ret = pm_runtime_resume_and_get(cpsw->dev);
 762	if (ret < 0)
 
 763		return ret;
 
 764
 
 
 765	netif_carrier_off(ndev);
 766
 767	/* Notify the stack of the actual queue counts. */
 768	ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 769	if (ret) {
 770		dev_err(priv->dev, "cannot set real number of tx queues\n");
 771		goto err_cleanup;
 772	}
 773
 774	ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 775	if (ret) {
 776		dev_err(priv->dev, "cannot set real number of rx queues\n");
 777		goto err_cleanup;
 778	}
 779
 780	reg = cpsw->version;
 781
 782	dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
 783		 CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
 784		 CPSW_RTL_VERSION(reg));
 785
 786	/* Initialize host and slave ports */
 787	if (!cpsw->usage_count)
 788		cpsw_init_host_port(priv);
 789	for_each_slave(priv, cpsw_slave_open, priv);
 790
 791	/* Add default VLAN */
 792	if (!cpsw->data.dual_emac)
 793		cpsw_add_default_vlan(priv);
 794	else
 795		cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
 796				  ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 797
 798	/* initialize shared resources for every ndev */
 799	if (!cpsw->usage_count) {
 800		/* disable priority elevation */
 801		writel_relaxed(0, &cpsw->regs->ptype);
 802
 803		/* enable statistics collection only on all ports */
 804		writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 805
 806		/* Enable internal fifo flow control */
 807		writel(0x7, &cpsw->regs->flow_control);
 808
 809		napi_enable(&cpsw->napi_rx);
 810		napi_enable(&cpsw->napi_tx);
 811
 812		if (cpsw->tx_irq_disabled) {
 813			cpsw->tx_irq_disabled = false;
 814			enable_irq(cpsw->irqs_table[1]);
 815		}
 816
 817		if (cpsw->rx_irq_disabled) {
 818			cpsw->rx_irq_disabled = false;
 819			enable_irq(cpsw->irqs_table[0]);
 820		}
 821
 822		/* create rxqs for both infs in dual mac as they use same pool
 823		 * and must be destroyed together when no users.
 824		 */
 825		ret = cpsw_create_xdp_rxqs(cpsw);
 826		if (ret < 0)
 827			goto err_cleanup;
 828
 829		ret = cpsw_fill_rx_channels(priv);
 830		if (ret < 0)
 831			goto err_cleanup;
 832
 833		if (cpsw->cpts) {
 834			if (cpts_register(cpsw->cpts))
 835				dev_err(priv->dev, "error registering cpts device\n");
 836			else
 837				writel(0x10, &cpsw->wr_regs->misc_en);
 838		}
 839	}
 840
 841	cpsw_restore(priv);
 842
 843	/* Enable Interrupt pacing if configured */
 844	if (cpsw->coal_intvl != 0) {
 845		struct ethtool_coalesce coal;
 846
 847		coal.rx_coalesce_usecs = cpsw->coal_intvl;
 848		cpsw_set_coalesce(ndev, &coal, NULL, NULL);
 849	}
 850
 851	cpdma_ctlr_start(cpsw->dma);
 852	cpsw_intr_enable(cpsw);
 853	cpsw->usage_count++;
 
 
 854
 855	return 0;
 856
 857err_cleanup:
 858	if (!cpsw->usage_count) {
 859		napi_disable(&cpsw->napi_rx);
 860		napi_disable(&cpsw->napi_tx);
 861		cpdma_ctlr_stop(cpsw->dma);
 862		cpsw_destroy_xdp_rxqs(cpsw);
 863	}
 864
 865	for_each_slave(priv, cpsw_slave_stop, cpsw);
 866	pm_runtime_put_sync(cpsw->dev);
 867	netif_carrier_off(priv->ndev);
 868	return ret;
 869}
 870
 871static int cpsw_ndo_stop(struct net_device *ndev)
 872{
 873	struct cpsw_priv *priv = netdev_priv(ndev);
 874	struct cpsw_common *cpsw = priv->cpsw;
 875
 876	cpsw_info(priv, ifdown, "shutting down cpsw device\n");
 877	__hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 878	netif_tx_stop_all_queues(priv->ndev);
 879	netif_carrier_off(priv->ndev);
 880
 881	if (cpsw->usage_count <= 1) {
 882		napi_disable(&cpsw->napi_rx);
 883		napi_disable(&cpsw->napi_tx);
 884		cpts_unregister(cpsw->cpts);
 885		cpsw_intr_disable(cpsw);
 886		cpdma_ctlr_stop(cpsw->dma);
 887		cpsw_ale_stop(cpsw->ale);
 888		cpsw_destroy_xdp_rxqs(cpsw);
 889	}
 890	for_each_slave(priv, cpsw_slave_stop, cpsw);
 891
 892	if (cpsw_need_resplit(cpsw))
 893		cpsw_split_res(cpsw);
 894
 895	cpsw->usage_count--;
 896	pm_runtime_put_sync(cpsw->dev);
 
 
 897	return 0;
 898}
 899
 900static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 901				       struct net_device *ndev)
 902{
 903	struct cpsw_priv *priv = netdev_priv(ndev);
 904	struct cpsw_common *cpsw = priv->cpsw;
 905	struct cpts *cpts = cpsw->cpts;
 906	struct netdev_queue *txq;
 907	struct cpdma_chan *txch;
 908	int ret, q_idx;
 909
 910	if (skb_put_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 
 
 911		cpsw_err(priv, tx_err, "packet pad failed\n");
 912		ndev->stats.tx_dropped++;
 913		return NET_XMIT_DROP;
 914	}
 915
 916	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 917	    priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 918		skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 919
 
 
 920	q_idx = skb_get_queue_mapping(skb);
 921	if (q_idx >= cpsw->tx_ch_num)
 922		q_idx = q_idx % cpsw->tx_ch_num;
 923
 924	txch = cpsw->txv[q_idx].ch;
 925	txq = netdev_get_tx_queue(ndev, q_idx);
 926	skb_tx_timestamp(skb);
 927	ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 928				priv->emac_port + cpsw->data.dual_emac);
 929	if (unlikely(ret != 0)) {
 930		cpsw_err(priv, tx_err, "desc submit failed\n");
 931		goto fail;
 932	}
 933
 934	/* If there is no more tx desc left free then we need to
 935	 * tell the kernel to stop sending us tx frames.
 936	 */
 937	if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 
 938		netif_tx_stop_queue(txq);
 939
 940		/* Barrier, so that stop_queue visible to other cpus */
 941		smp_mb__after_atomic();
 942
 943		if (cpdma_check_free_tx_desc(txch))
 944			netif_tx_wake_queue(txq);
 945	}
 946
 947	return NETDEV_TX_OK;
 948fail:
 949	ndev->stats.tx_dropped++;
 
 950	netif_tx_stop_queue(txq);
 
 
 951
 952	/* Barrier, so that stop_queue visible to other cpus */
 953	smp_mb__after_atomic();
 954
 955	if (cpdma_check_free_tx_desc(txch))
 956		netif_tx_wake_queue(txq);
 
 
 957
 958	return NETDEV_TX_BUSY;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 959}
 960
 961static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 962{
 963	struct cpsw_priv *priv = netdev_priv(ndev);
 964	struct sockaddr *addr = (struct sockaddr *)p;
 965	struct cpsw_common *cpsw = priv->cpsw;
 966	int flags = 0;
 967	u16 vid = 0;
 968	int ret;
 969
 970	if (!is_valid_ether_addr(addr->sa_data))
 971		return -EADDRNOTAVAIL;
 972
 973	ret = pm_runtime_resume_and_get(cpsw->dev);
 974	if (ret < 0)
 
 975		return ret;
 
 976
 977	if (cpsw->data.dual_emac) {
 978		vid = cpsw->slaves[priv->emac_port].port_vlan;
 979		flags = ALE_VLAN;
 980	}
 981
 982	cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 983			   flags, vid);
 984	cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
 985			   flags, vid);
 986
 987	memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
 988	eth_hw_addr_set(ndev, priv->mac_addr);
 989	for_each_slave(priv, cpsw_set_slave_mac, priv);
 990
 991	pm_runtime_put(cpsw->dev);
 992
 993	return 0;
 994}
 995
 
 
 
 
 
 
 
 
 
 
 
 
 996static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 997				unsigned short vid)
 998{
 999	int ret;
1000	int unreg_mcast_mask = 0;
1001	int mcast_mask;
1002	u32 port_mask;
1003	struct cpsw_common *cpsw = priv->cpsw;
1004
1005	if (cpsw->data.dual_emac) {
1006		port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1007
1008		mcast_mask = ALE_PORT_HOST;
1009		if (priv->ndev->flags & IFF_ALLMULTI)
1010			unreg_mcast_mask = mcast_mask;
1011	} else {
1012		port_mask = ALE_ALL_PORTS;
1013		mcast_mask = port_mask;
1014
1015		if (priv->ndev->flags & IFF_ALLMULTI)
1016			unreg_mcast_mask = ALE_ALL_PORTS;
1017		else
1018			unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1019	}
1020
1021	ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1022				unreg_mcast_mask);
1023	if (ret != 0)
1024		return ret;
1025
1026	ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1027				 HOST_PORT_NUM, ALE_VLAN, vid);
1028	if (ret != 0)
1029		goto clean_vid;
1030
1031	ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1032				 mcast_mask, ALE_VLAN, vid, 0);
1033	if (ret != 0)
1034		goto clean_vlan_ucast;
1035	return 0;
1036
1037clean_vlan_ucast:
1038	cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1039			   HOST_PORT_NUM, ALE_VLAN, vid);
1040clean_vid:
1041	cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1042	return ret;
1043}
1044
1045static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1046				    __be16 proto, u16 vid)
1047{
1048	struct cpsw_priv *priv = netdev_priv(ndev);
1049	struct cpsw_common *cpsw = priv->cpsw;
1050	int ret;
1051
1052	if (vid == cpsw->data.default_vlan)
1053		return 0;
1054
1055	ret = pm_runtime_resume_and_get(cpsw->dev);
1056	if (ret < 0)
 
1057		return ret;
 
1058
1059	if (cpsw->data.dual_emac) {
1060		/* In dual EMAC, reserved VLAN id should not be used for
1061		 * creating VLAN interfaces as this can break the dual
1062		 * EMAC port separation
1063		 */
1064		int i;
1065
1066		for (i = 0; i < cpsw->data.slaves; i++) {
1067			if (vid == cpsw->slaves[i].port_vlan) {
1068				ret = -EINVAL;
1069				goto err;
1070			}
1071		}
1072	}
1073
1074	dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1075	ret = cpsw_add_vlan_ale_entry(priv, vid);
1076err:
1077	pm_runtime_put(cpsw->dev);
1078	return ret;
1079}
1080
1081static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1082				     __be16 proto, u16 vid)
1083{
1084	struct cpsw_priv *priv = netdev_priv(ndev);
1085	struct cpsw_common *cpsw = priv->cpsw;
1086	int ret;
1087
1088	if (vid == cpsw->data.default_vlan)
1089		return 0;
1090
1091	ret = pm_runtime_resume_and_get(cpsw->dev);
1092	if (ret < 0)
 
1093		return ret;
 
1094
1095	if (cpsw->data.dual_emac) {
1096		int i;
1097
1098		for (i = 0; i < cpsw->data.slaves; i++) {
1099			if (vid == cpsw->slaves[i].port_vlan)
1100				goto err;
1101		}
1102	}
1103
1104	dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1105	ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1106	ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1107				  HOST_PORT_NUM, ALE_VLAN, vid);
1108	ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1109				  0, ALE_VLAN, vid);
1110	ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1111err:
 
 
 
 
1112	pm_runtime_put(cpsw->dev);
1113	return ret;
1114}
1115
1116static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1117			     struct xdp_frame **frames, u32 flags)
1118{
1119	struct cpsw_priv *priv = netdev_priv(ndev);
1120	struct cpsw_common *cpsw = priv->cpsw;
1121	struct xdp_frame *xdpf;
1122	int i, nxmit = 0, port;
 
 
 
 
 
 
1123
1124	if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
 
 
 
 
1125		return -EINVAL;
 
1126
1127	for (i = 0; i < n; i++) {
1128		xdpf = frames[i];
1129		if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1130			break;
1131
1132		port = priv->emac_port + cpsw->data.dual_emac;
1133		if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1134			break;
1135		nxmit++;
1136	}
1137
1138	return nxmit;
1139}
1140
1141#ifdef CONFIG_NET_POLL_CONTROLLER
1142static void cpsw_ndo_poll_controller(struct net_device *ndev)
1143{
1144	struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1145
1146	cpsw_intr_disable(cpsw);
1147	cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1148	cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1149	cpsw_intr_enable(cpsw);
 
 
 
 
 
 
 
1150}
1151#endif
1152
1153static const struct net_device_ops cpsw_netdev_ops = {
1154	.ndo_open		= cpsw_ndo_open,
1155	.ndo_stop		= cpsw_ndo_stop,
1156	.ndo_start_xmit		= cpsw_ndo_start_xmit,
1157	.ndo_set_mac_address	= cpsw_ndo_set_mac_address,
1158	.ndo_eth_ioctl		= cpsw_ndo_ioctl,
1159	.ndo_validate_addr	= eth_validate_addr,
1160	.ndo_tx_timeout		= cpsw_ndo_tx_timeout,
1161	.ndo_set_rx_mode	= cpsw_ndo_set_rx_mode,
1162	.ndo_set_tx_maxrate	= cpsw_ndo_set_tx_maxrate,
1163#ifdef CONFIG_NET_POLL_CONTROLLER
1164	.ndo_poll_controller	= cpsw_ndo_poll_controller,
1165#endif
1166	.ndo_vlan_rx_add_vid	= cpsw_ndo_vlan_rx_add_vid,
1167	.ndo_vlan_rx_kill_vid	= cpsw_ndo_vlan_rx_kill_vid,
1168	.ndo_setup_tc           = cpsw_ndo_setup_tc,
1169	.ndo_bpf		= cpsw_ndo_bpf,
1170	.ndo_xdp_xmit		= cpsw_ndo_xdp_xmit,
1171};
1172
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1173static void cpsw_get_drvinfo(struct net_device *ndev,
1174			     struct ethtool_drvinfo *info)
1175{
1176	struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1177	struct platform_device	*pdev = to_platform_device(cpsw->dev);
1178
1179	strscpy(info->driver, "cpsw", sizeof(info->driver));
1180	strscpy(info->version, "1.0", sizeof(info->version));
1181	strscpy(info->bus_info, pdev->name, sizeof(info->bus_info));
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1182}
1183
1184static int cpsw_set_pauseparam(struct net_device *ndev,
1185			       struct ethtool_pauseparam *pause)
1186{
1187	struct cpsw_priv *priv = netdev_priv(ndev);
1188	bool link;
1189
1190	priv->rx_pause = pause->rx_pause ? true : false;
1191	priv->tx_pause = pause->tx_pause ? true : false;
1192
1193	for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1194	return 0;
1195}
1196
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1197static int cpsw_set_channels(struct net_device *ndev,
1198			     struct ethtool_channels *chs)
1199{
1200	return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1201}
1202
1203static const struct ethtool_ops cpsw_ethtool_ops = {
1204	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1205	.get_drvinfo	= cpsw_get_drvinfo,
1206	.get_msglevel	= cpsw_get_msglevel,
1207	.set_msglevel	= cpsw_set_msglevel,
1208	.get_link	= ethtool_op_get_link,
1209	.get_ts_info	= cpsw_get_ts_info,
1210	.get_coalesce	= cpsw_get_coalesce,
1211	.set_coalesce	= cpsw_set_coalesce,
1212	.get_sset_count		= cpsw_get_sset_count,
1213	.get_strings		= cpsw_get_strings,
1214	.get_ethtool_stats	= cpsw_get_ethtool_stats,
1215	.get_pauseparam		= cpsw_get_pauseparam,
1216	.set_pauseparam		= cpsw_set_pauseparam,
1217	.get_wol	= cpsw_get_wol,
1218	.set_wol	= cpsw_set_wol,
1219	.get_regs_len	= cpsw_get_regs_len,
1220	.get_regs	= cpsw_get_regs,
1221	.begin		= cpsw_ethtool_op_begin,
1222	.complete	= cpsw_ethtool_op_complete,
1223	.get_channels	= cpsw_get_channels,
1224	.set_channels	= cpsw_set_channels,
1225	.get_link_ksettings	= cpsw_get_link_ksettings,
1226	.set_link_ksettings	= cpsw_set_link_ksettings,
1227	.get_eee	= cpsw_get_eee,
1228	.set_eee	= cpsw_set_eee,
1229	.nway_reset	= cpsw_nway_reset,
1230	.get_ringparam = cpsw_get_ringparam,
1231	.set_ringparam = cpsw_set_ringparam,
1232};
1233
 
 
 
 
 
 
 
 
 
 
 
 
 
1234static int cpsw_probe_dt(struct cpsw_platform_data *data,
1235			 struct platform_device *pdev)
1236{
1237	struct device_node *node = pdev->dev.of_node;
1238	struct device_node *slave_node;
1239	int i = 0, ret;
1240	u32 prop;
1241
1242	if (!node)
1243		return -EINVAL;
1244
1245	if (of_property_read_u32(node, "slaves", &prop)) {
1246		dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1247		return -EINVAL;
1248	}
1249	data->slaves = prop;
1250
1251	if (of_property_read_u32(node, "active_slave", &prop)) {
1252		dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1253		return -EINVAL;
1254	}
1255	data->active_slave = prop;
1256
1257	data->slave_data = devm_kcalloc(&pdev->dev,
1258					data->slaves,
1259					sizeof(struct cpsw_slave_data),
1260					GFP_KERNEL);
1261	if (!data->slave_data)
1262		return -ENOMEM;
1263
1264	if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1265		dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1266		return -EINVAL;
1267	}
1268	data->channels = prop;
1269
 
 
 
 
 
 
1270	if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1271		dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1272		return -EINVAL;
1273	}
1274	data->bd_ram_size = prop;
1275
1276	if (of_property_read_u32(node, "mac_control", &prop)) {
1277		dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1278		return -EINVAL;
1279	}
1280	data->mac_control = prop;
1281
1282	if (of_property_read_bool(node, "dual_emac"))
1283		data->dual_emac = true;
1284
1285	/*
1286	 * Populate all the child nodes here...
1287	 */
1288	ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1289	/* We do not want to force this, as in some cases may not have child */
1290	if (ret)
1291		dev_warn(&pdev->dev, "Doesn't have any child node\n");
1292
1293	for_each_available_child_of_node(node, slave_node) {
1294		struct cpsw_slave_data *slave_data = data->slave_data + i;
 
1295		int lenp;
1296		const __be32 *parp;
1297
1298		/* This is no slave child node, continue */
1299		if (!of_node_name_eq(slave_node, "slave"))
1300			continue;
1301
1302		slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1303						    NULL);
1304		if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1305		    IS_ERR(slave_data->ifphy)) {
1306			ret = PTR_ERR(slave_data->ifphy);
1307			dev_err(&pdev->dev,
1308				"%d: Error retrieving port phy: %d\n", i, ret);
1309			goto err_node_put;
1310		}
1311
1312		slave_data->slave_node = slave_node;
1313		slave_data->phy_node = of_parse_phandle(slave_node,
1314							"phy-handle", 0);
1315		parp = of_get_property(slave_node, "phy_id", &lenp);
1316		if (slave_data->phy_node) {
1317			dev_dbg(&pdev->dev,
1318				"slave[%d] using phy-handle=\"%pOF\"\n",
1319				i, slave_data->phy_node);
1320		} else if (of_phy_is_fixed_link(slave_node)) {
1321			/* In the case of a fixed PHY, the DT node associated
1322			 * to the PHY is the Ethernet MAC DT node.
1323			 */
1324			ret = of_phy_register_fixed_link(slave_node);
1325			if (ret) {
1326				dev_err_probe(&pdev->dev, ret, "failed to register fixed-link phy\n");
1327				goto err_node_put;
 
1328			}
1329			slave_data->phy_node = of_node_get(slave_node);
1330		} else if (parp) {
1331			u32 phyid;
1332			struct device_node *mdio_node;
1333			struct platform_device *mdio;
1334
1335			if (lenp != (sizeof(__be32) * 2)) {
1336				dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1337				goto no_phy_slave;
1338			}
1339			mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1340			phyid = be32_to_cpup(parp+1);
1341			mdio = of_find_device_by_node(mdio_node);
1342			of_node_put(mdio_node);
1343			if (!mdio) {
1344				dev_err(&pdev->dev, "Missing mdio platform device\n");
1345				ret = -EINVAL;
1346				goto err_node_put;
1347			}
1348			snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1349				 PHY_ID_FMT, mdio->name, phyid);
1350			put_device(&mdio->dev);
1351		} else {
1352			dev_err(&pdev->dev,
1353				"No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1354				i);
1355			goto no_phy_slave;
1356		}
1357		ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1358		if (ret) {
1359			dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1360				i);
1361			goto err_node_put;
1362		}
1363
1364no_phy_slave:
1365		ret = of_get_mac_address(slave_node, slave_data->mac_addr);
1366		if (ret) {
 
 
1367			ret = ti_cm_get_macid(&pdev->dev, i,
1368					      slave_data->mac_addr);
1369			if (ret)
1370				goto err_node_put;
1371		}
1372		if (data->dual_emac) {
1373			if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1374						 &prop)) {
1375				dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1376				slave_data->dual_emac_res_vlan = i+1;
1377				dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1378					slave_data->dual_emac_res_vlan, i);
1379			} else {
1380				slave_data->dual_emac_res_vlan = prop;
1381			}
1382		}
1383
1384		i++;
1385		if (i == data->slaves) {
1386			ret = 0;
1387			goto err_node_put;
1388		}
1389	}
1390
1391	return 0;
1392
1393err_node_put:
1394	of_node_put(slave_node);
1395	return ret;
1396}
1397
1398static void cpsw_remove_dt(struct platform_device *pdev)
1399{
1400	struct cpsw_common *cpsw = platform_get_drvdata(pdev);
 
1401	struct cpsw_platform_data *data = &cpsw->data;
1402	struct device_node *node = pdev->dev.of_node;
1403	struct device_node *slave_node;
1404	int i = 0;
1405
1406	for_each_available_child_of_node(node, slave_node) {
1407		struct cpsw_slave_data *slave_data = &data->slave_data[i];
1408
1409		if (!of_node_name_eq(slave_node, "slave"))
1410			continue;
1411
1412		if (of_phy_is_fixed_link(slave_node))
1413			of_phy_deregister_fixed_link(slave_node);
1414
1415		of_node_put(slave_data->phy_node);
1416
1417		i++;
1418		if (i == data->slaves) {
1419			of_node_put(slave_node);
1420			break;
1421		}
1422	}
1423
1424	of_platform_depopulate(&pdev->dev);
1425}
1426
1427static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1428{
1429	struct cpsw_common		*cpsw = priv->cpsw;
1430	struct cpsw_platform_data	*data = &cpsw->data;
1431	struct net_device		*ndev;
1432	struct cpsw_priv		*priv_sl2;
1433	int ret = 0;
1434
1435	ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1436				       CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1437	if (!ndev) {
1438		dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1439		return -ENOMEM;
1440	}
1441
1442	priv_sl2 = netdev_priv(ndev);
1443	priv_sl2->cpsw = cpsw;
1444	priv_sl2->ndev = ndev;
1445	priv_sl2->dev  = &ndev->dev;
1446	priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1447
1448	if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1449		memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1450			ETH_ALEN);
1451		dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1452			 priv_sl2->mac_addr);
1453	} else {
1454		eth_random_addr(priv_sl2->mac_addr);
1455		dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1456			 priv_sl2->mac_addr);
1457	}
1458	eth_hw_addr_set(ndev, priv_sl2->mac_addr);
1459
1460	priv_sl2->emac_port = 1;
1461	cpsw->slaves[1].ndev = ndev;
1462	ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1463	ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1464			     NETDEV_XDP_ACT_NDO_XMIT;
1465
1466	ndev->netdev_ops = &cpsw_netdev_ops;
1467	ndev->ethtool_ops = &cpsw_ethtool_ops;
1468
1469	/* register the network device */
1470	SET_NETDEV_DEV(ndev, cpsw->dev);
1471	ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1472	ret = register_netdev(ndev);
1473	if (ret)
1474		dev_err(cpsw->dev, "cpsw: error registering net device\n");
 
 
 
1475
1476	return ret;
1477}
1478
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1479static const struct of_device_id cpsw_of_mtable[] = {
1480	{ .compatible = "ti,cpsw"},
1481	{ .compatible = "ti,am335x-cpsw"},
1482	{ .compatible = "ti,am4372-cpsw"},
1483	{ .compatible = "ti,dra7-cpsw"},
1484	{ /* sentinel */ },
1485};
1486MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1487
1488static const struct soc_device_attribute cpsw_soc_devices[] = {
1489	{ .family = "AM33xx", .revision = "ES1.0"},
1490	{ /* sentinel */ }
1491};
1492
1493static int cpsw_probe(struct platform_device *pdev)
1494{
1495	struct device			*dev = &pdev->dev;
1496	struct clk			*clk;
1497	struct cpsw_platform_data	*data;
1498	struct net_device		*ndev;
1499	struct cpsw_priv		*priv;
 
 
1500	void __iomem			*ss_regs;
1501	struct resource			*ss_res;
 
 
1502	struct gpio_descs		*mode;
1503	const struct soc_device_attribute *soc;
1504	struct cpsw_common		*cpsw;
1505	int ret = 0, ch;
1506	int irq;
1507
1508	cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1509	if (!cpsw)
1510		return -ENOMEM;
1511
1512	platform_set_drvdata(pdev, cpsw);
1513	cpsw_slave_index = cpsw_slave_index_priv;
 
 
 
 
 
1514
1515	cpsw->dev = dev;
 
 
 
 
 
 
1516
1517	mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1518	if (IS_ERR(mode)) {
1519		ret = PTR_ERR(mode);
1520		dev_err(dev, "gpio request failed, ret %d\n", ret);
1521		return ret;
1522	}
1523
1524	clk = devm_clk_get(dev, "fck");
1525	if (IS_ERR(clk)) {
1526		ret = PTR_ERR(clk);
1527		dev_err(dev, "fck is not found %d\n", ret);
1528		return ret;
1529	}
1530	cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1531
1532	ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1533	if (IS_ERR(ss_regs))
1534		return PTR_ERR(ss_regs);
1535	cpsw->regs = ss_regs;
1536
1537	cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1538	if (IS_ERR(cpsw->wr_regs))
1539		return PTR_ERR(cpsw->wr_regs);
1540
1541	/* RX IRQ */
1542	irq = platform_get_irq(pdev, 1);
1543	if (irq < 0)
1544		return irq;
1545	cpsw->irqs_table[0] = irq;
1546
1547	/* TX IRQ */
1548	irq = platform_get_irq(pdev, 2);
1549	if (irq < 0)
1550		return irq;
1551	cpsw->irqs_table[1] = irq;
1552
1553	/* get misc irq*/
1554	irq = platform_get_irq(pdev, 3);
1555	if (irq <= 0)
1556		return irq;
1557	cpsw->misc_irq = irq;
1558
1559	/*
1560	 * This may be required here for child devices.
1561	 */
1562	pm_runtime_enable(dev);
 
 
 
1563
1564	/* Need to enable clocks with runtime PM api to access module
1565	 * registers
1566	 */
1567	ret = pm_runtime_resume_and_get(dev);
1568	if (ret < 0)
 
1569		goto clean_runtime_disable_ret;
 
1570
1571	ret = cpsw_probe_dt(&cpsw->data, pdev);
1572	if (ret)
1573		goto clean_dt_ret;
1574
1575	soc = soc_device_match(cpsw_soc_devices);
1576	if (soc)
1577		cpsw->quirk_irq = true;
1578
1579	data = &cpsw->data;
1580	cpsw->slaves = devm_kcalloc(dev,
1581				    data->slaves, sizeof(struct cpsw_slave),
 
 
 
 
 
 
 
 
 
 
 
 
 
1582				    GFP_KERNEL);
1583	if (!cpsw->slaves) {
1584		ret = -ENOMEM;
1585		goto clean_dt_ret;
1586	}
 
 
1587
1588	cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1589	cpsw->descs_pool_size = descs_pool_size;
1590
1591	ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1592			       ss_res->start + CPSW2_BD_OFFSET,
1593			       descs_pool_size);
1594	if (ret)
1595		goto clean_dt_ret;
1596
1597	ch = cpsw->quirk_irq ? 0 : 7;
1598	cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1599	if (IS_ERR(cpsw->txv[0].ch)) {
1600		dev_err(dev, "error initializing tx dma channel\n");
1601		ret = PTR_ERR(cpsw->txv[0].ch);
1602		goto clean_cpts;
1603	}
 
1604
1605	cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1606	if (IS_ERR(cpsw->rxv[0].ch)) {
1607		dev_err(dev, "error initializing rx dma channel\n");
1608		ret = PTR_ERR(cpsw->rxv[0].ch);
1609		goto clean_cpts;
1610	}
1611	cpsw_split_res(cpsw);
1612
1613	/* setup netdev */
1614	ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1615				       CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1616	if (!ndev) {
1617		dev_err(dev, "error allocating net_device\n");
1618		ret = -ENOMEM;
1619		goto clean_cpts;
1620	}
 
1621
1622	priv = netdev_priv(ndev);
1623	priv->cpsw = cpsw;
1624	priv->ndev = ndev;
1625	priv->dev  = dev;
1626	priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1627	priv->emac_port = 0;
1628
1629	if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1630		memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1631		dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1632	} else {
1633		eth_random_addr(priv->mac_addr);
1634		dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1635	}
1636
1637	eth_hw_addr_set(ndev, priv->mac_addr);
 
1638
1639	cpsw->slaves[0].ndev = ndev;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1640
1641	ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1642	ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1643			     NETDEV_XDP_ACT_NDO_XMIT;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1644
1645	ndev->netdev_ops = &cpsw_netdev_ops;
1646	ndev->ethtool_ops = &cpsw_ethtool_ops;
1647	netif_napi_add(ndev, &cpsw->napi_rx,
1648		       cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll);
1649	netif_napi_add_tx(ndev, &cpsw->napi_tx,
1650			  cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll);
 
1651
1652	/* register the network device */
1653	SET_NETDEV_DEV(ndev, dev);
1654	ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1655	ret = register_netdev(ndev);
1656	if (ret) {
1657		dev_err(dev, "error registering net device\n");
 
 
1658		ret = -ENODEV;
1659		goto clean_cpts;
1660	}
1661
1662	if (cpsw->data.dual_emac) {
1663		ret = cpsw_probe_dual_emac(priv);
1664		if (ret) {
1665			cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1666			goto clean_unregister_netdev_ret;
1667		}
 
 
 
 
 
 
 
 
 
 
 
 
1668	}
1669
1670	/* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1671	 * MISC IRQs which are always kept disabled with this driver so
1672	 * we will not request them.
1673	 *
1674	 * If anyone wants to implement support for those, make sure to
1675	 * first request and append them to irqs_table array.
1676	 */
1677	ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1678			       0, dev_name(dev), cpsw);
1679	if (ret < 0) {
1680		dev_err(dev, "error attaching irq (%d)\n", ret);
1681		goto clean_unregister_netdev_ret;
1682	}
1683
 
 
 
 
 
 
1684
1685	ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
 
1686			       0, dev_name(&pdev->dev), cpsw);
1687	if (ret < 0) {
1688		dev_err(dev, "error attaching irq (%d)\n", ret);
1689		goto clean_unregister_netdev_ret;
1690	}
1691
1692	if (!cpsw->cpts)
1693		goto skip_cpts;
 
 
 
 
1694
1695	ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
 
1696			       0, dev_name(&pdev->dev), cpsw);
1697	if (ret < 0) {
1698		dev_err(dev, "error attaching misc irq (%d)\n", ret);
1699		goto clean_unregister_netdev_ret;
1700	}
1701
1702	/* Enable misc CPTS evnt_pend IRQ */
1703	cpts_set_irqpoll(cpsw->cpts, false);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1704
1705skip_cpts:
1706	cpsw_notice(priv, probe,
1707		    "initialized device (regs %pa, irq %d, pool size %d)\n",
1708		    &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
 
 
 
 
 
 
1709
1710	pm_runtime_put(&pdev->dev);
1711
1712	return 0;
1713
1714clean_unregister_netdev_ret:
1715	unregister_netdev(ndev);
1716clean_cpts:
1717	cpts_release(cpsw->cpts);
 
1718	cpdma_ctlr_destroy(cpsw->dma);
1719clean_dt_ret:
1720	cpsw_remove_dt(pdev);
1721	pm_runtime_put_sync(&pdev->dev);
1722clean_runtime_disable_ret:
1723	pm_runtime_disable(&pdev->dev);
 
 
1724	return ret;
1725}
1726
1727static void cpsw_remove(struct platform_device *pdev)
1728{
1729	struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1730	int i, ret;
 
1731
1732	ret = pm_runtime_resume_and_get(&pdev->dev);
1733	if (ret < 0) {
1734		/* Note, if this error path is taken, we're leaking some
1735		 * resources.
1736		 */
1737		dev_err(&pdev->dev, "Failed to resume device (%pe)\n",
1738			ERR_PTR(ret));
1739		return;
1740	}
1741
1742	for (i = 0; i < cpsw->data.slaves; i++)
1743		if (cpsw->slaves[i].ndev)
1744			unregister_netdev(cpsw->slaves[i].ndev);
1745
1746	cpts_release(cpsw->cpts);
 
1747	cpdma_ctlr_destroy(cpsw->dma);
1748	cpsw_remove_dt(pdev);
1749	pm_runtime_put_sync(&pdev->dev);
1750	pm_runtime_disable(&pdev->dev);
 
 
 
 
1751}
1752
1753#ifdef CONFIG_PM_SLEEP
1754static int cpsw_suspend(struct device *dev)
1755{
1756	struct cpsw_common *cpsw = dev_get_drvdata(dev);
1757	int i;
 
1758
1759	rtnl_lock();
 
1760
1761	for (i = 0; i < cpsw->data.slaves; i++)
1762		if (cpsw->slaves[i].ndev)
1763			if (netif_running(cpsw->slaves[i].ndev))
1764				cpsw_ndo_stop(cpsw->slaves[i].ndev);
1765
1766	rtnl_unlock();
 
 
 
1767
1768	/* Select sleep pin state */
1769	pinctrl_pm_select_sleep_state(dev);
1770
1771	return 0;
1772}
1773
1774static int cpsw_resume(struct device *dev)
1775{
1776	struct cpsw_common *cpsw = dev_get_drvdata(dev);
1777	int i;
 
1778
1779	/* Select default pin state */
1780	pinctrl_pm_select_default_state(dev);
1781
1782	/* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1783	rtnl_lock();
 
 
1784
1785	for (i = 0; i < cpsw->data.slaves; i++)
1786		if (cpsw->slaves[i].ndev)
1787			if (netif_running(cpsw->slaves[i].ndev))
1788				cpsw_ndo_open(cpsw->slaves[i].ndev);
1789
 
 
 
 
1790	rtnl_unlock();
1791
1792	return 0;
1793}
1794#endif
1795
1796static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1797
1798static struct platform_driver cpsw_driver = {
1799	.driver = {
1800		.name	 = "cpsw",
1801		.pm	 = &cpsw_pm_ops,
1802		.of_match_table = cpsw_of_mtable,
1803	},
1804	.probe = cpsw_probe,
1805	.remove = cpsw_remove,
1806};
1807
1808module_platform_driver(cpsw_driver);
1809
1810MODULE_LICENSE("GPL");
1811MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1812MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1813MODULE_DESCRIPTION("TI CPSW Ethernet driver");