drivers/net/ethernet/ti/cpsw.c

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