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_NA;
 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_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
 440 requeue:
 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
 454 static 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
 519 static 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
 540 static 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
 562 static 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         slave->phy = phy;
 635
 636         phy_attached_info(slave->phy);
 637
 638         phy_start(slave->phy);
 639
 640         /* Configure GMII_SEL register */
 641         if (!IS_ERR(slave->data->ifphy))
 642                 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 643                                  slave->data->phy_if);
 644         else
 645                 cpsw_phy_sel(cpsw->dev, slave->phy->interface,
 646                              slave->slave_num);
 647 }
 648
 649 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
 650 {
 651         struct cpsw_common *cpsw = priv->cpsw;
 652         const int vlan = cpsw->data.default_vlan;
 653         u32 reg;
 654         int i;
 655         int unreg_mcast_mask;
 656
 657         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 658                CPSW2_PORT_VLAN;
 659
 660         writel(vlan, &cpsw->host_port_regs->port_vlan);
 661
 662         for (i = 0; i < cpsw->data.slaves; i++)
 663                 slave_write(cpsw->slaves + i, vlan, reg);
 664
 665         if (priv->ndev->flags & IFF_ALLMULTI)
 666                 unreg_mcast_mask = ALE_ALL_PORTS;
 667         else
 668                 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
 669
 670         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 671                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 672                           unreg_mcast_mask);
 673 }
 674
 675 static void cpsw_init_host_port(struct cpsw_priv *priv)
 676 {
 677         u32 fifo_mode;
 678         u32 control_reg;
 679         struct cpsw_common *cpsw = priv->cpsw;
 680
 681         /* soft reset the controller and initialize ale */
 682         soft_reset("cpsw", &cpsw->regs->soft_reset);
 683         cpsw_ale_start(cpsw->ale);
 684
 685         /* switch to vlan unaware mode */
 686         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 687                              CPSW_ALE_VLAN_AWARE);
 688         control_reg = readl(&cpsw->regs->control);
 689         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 690         writel(control_reg, &cpsw->regs->control);
 691         fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
 692                      CPSW_FIFO_NORMAL_MODE;
 693         writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
 694
 695         /* setup host port priority mapping */
 696         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 697                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 698         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 699
 700         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 701                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 702
 703         if (!cpsw->data.dual_emac) {
 704                 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 705                                    0, 0);
 706                 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 707                                    ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
 708         }
 709 }
 710
 711 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
 712 {
 713         u32 slave_port;
 714
 715         slave_port = cpsw_get_slave_port(slave->slave_num);
 716
 717         if (!slave->phy)
 718                 return;
 719         phy_stop(slave->phy);
 720         phy_disconnect(slave->phy);
 721         slave->phy = NULL;
 722         cpsw_ale_control_set(cpsw->ale, slave_port,
 723                              ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 724         cpsw_sl_reset(slave->mac_sl, 100);
 725         cpsw_sl_ctl_reset(slave->mac_sl);
 726 }
 727
 728 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 729 {
 730         struct cpsw_priv *priv = arg;
 731
 732         if (!vdev)
 733                 return 0;
 734
 735         cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 736         return 0;
 737 }
 738
 739 /* restore resources after port reset */
 740 static void cpsw_restore(struct cpsw_priv *priv)
 741 {
 742         /* restore vlan configurations */
 743         vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 744
 745         /* restore MQPRIO offload */
 746         for_each_slave(priv, cpsw_mqprio_resume, priv);
 747
 748         /* restore CBS offload */
 749         for_each_slave(priv, cpsw_cbs_resume, priv);
 750 }
 751
 752 static int cpsw_ndo_open(struct net_device *ndev)
 753 {
 754         struct cpsw_priv *priv = netdev_priv(ndev);
 755         struct cpsw_common *cpsw = priv->cpsw;
 756         int ret;
 757         u32 reg;
 758
 759         ret = pm_runtime_resume_and_get(cpsw->dev);
 760         if (ret < 0)
 761                 return ret;
 762
 763         netif_carrier_off(ndev);
 764
 765         /* Notify the stack of the actual queue counts. */
 766         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 767         if (ret) {
 768                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 769                 goto err_cleanup;
 770         }
 771
 772         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 773         if (ret) {
 774                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 775                 goto err_cleanup;
 776         }
 777
 778         reg = cpsw->version;
 779
 780         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
 781                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
 782                  CPSW_RTL_VERSION(reg));
 783
 784         /* Initialize host and slave ports */
 785         if (!cpsw->usage_count)
 786                 cpsw_init_host_port(priv);
 787         for_each_slave(priv, cpsw_slave_open, priv);
 788
 789         /* Add default VLAN */
 790         if (!cpsw->data.dual_emac)
 791                 cpsw_add_default_vlan(priv);
 792         else
 793                 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
 794                                   ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 795
 796         /* initialize shared resources for every ndev */
 797         if (!cpsw->usage_count) {
 798                 /* disable priority elevation */
 799                 writel_relaxed(0, &cpsw->regs->ptype);
 800
 801                 /* enable statistics collection only on all ports */
 802                 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 803
 804                 /* Enable internal fifo flow control */
 805                 writel(0x7, &cpsw->regs->flow_control);
 806
 807                 napi_enable(&cpsw->napi_rx);
 808                 napi_enable(&cpsw->napi_tx);
 809
 810                 if (cpsw->tx_irq_disabled) {
 811                         cpsw->tx_irq_disabled = false;
 812                         enable_irq(cpsw->irqs_table[1]);
 813                 }
 814
 815                 if (cpsw->rx_irq_disabled) {
 816                         cpsw->rx_irq_disabled = false;
 817                         enable_irq(cpsw->irqs_table[0]);
 818                 }
 819
 820                 /* create rxqs for both infs in dual mac as they use same pool
 821                  * and must be destroyed together when no users.
 822                  */
 823                 ret = cpsw_create_xdp_rxqs(cpsw);
 824                 if (ret < 0)
 825                         goto err_cleanup;
 826
 827                 ret = cpsw_fill_rx_channels(priv);
 828                 if (ret < 0)
 829                         goto err_cleanup;
 830
 831                 if (cpsw->cpts) {
 832                         if (cpts_register(cpsw->cpts))
 833                                 dev_err(priv->dev, "error registering cpts device\n");
 834                         else
 835                                 writel(0x10, &cpsw->wr_regs->misc_en);
 836                 }
 837         }
 838
 839         cpsw_restore(priv);
 840
 841         /* Enable Interrupt pacing if configured */
 842         if (cpsw->coal_intvl != 0) {
 843                 struct ethtool_coalesce coal;
 844
 845                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 846                 cpsw_set_coalesce(ndev, &coal, NULL, NULL);
 847         }
 848
 849         cpdma_ctlr_start(cpsw->dma);
 850         cpsw_intr_enable(cpsw);
 851         cpsw->usage_count++;
 852
 853         return 0;
 854
 855 err_cleanup:
 856         if (!cpsw->usage_count) {
 857                 cpdma_ctlr_stop(cpsw->dma);
 858                 cpsw_destroy_xdp_rxqs(cpsw);
 859         }
 860
 861         for_each_slave(priv, cpsw_slave_stop, cpsw);
 862         pm_runtime_put_sync(cpsw->dev);
 863         netif_carrier_off(priv->ndev);
 864         return ret;
 865 }
 866
 867 static int cpsw_ndo_stop(struct net_device *ndev)
 868 {
 869         struct cpsw_priv *priv = netdev_priv(ndev);
 870         struct cpsw_common *cpsw = priv->cpsw;
 871
 872         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
 873         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 874         netif_tx_stop_all_queues(priv->ndev);
 875         netif_carrier_off(priv->ndev);
 876
 877         if (cpsw->usage_count <= 1) {
 878                 napi_disable(&cpsw->napi_rx);
 879                 napi_disable(&cpsw->napi_tx);
 880                 cpts_unregister(cpsw->cpts);
 881                 cpsw_intr_disable(cpsw);
 882                 cpdma_ctlr_stop(cpsw->dma);
 883                 cpsw_ale_stop(cpsw->ale);
 884                 cpsw_destroy_xdp_rxqs(cpsw);
 885         }
 886         for_each_slave(priv, cpsw_slave_stop, cpsw);
 887
 888         if (cpsw_need_resplit(cpsw))
 889                 cpsw_split_res(cpsw);
 890
 891         cpsw->usage_count--;
 892         pm_runtime_put_sync(cpsw->dev);
 893         return 0;
 894 }
 895
 896 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 897                                        struct net_device *ndev)
 898 {
 899         struct cpsw_priv *priv = netdev_priv(ndev);
 900         struct cpsw_common *cpsw = priv->cpsw;
 901         struct cpts *cpts = cpsw->cpts;
 902         struct netdev_queue *txq;
 903         struct cpdma_chan *txch;
 904         int ret, q_idx;
 905
 906         if (skb_put_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 907                 cpsw_err(priv, tx_err, "packet pad failed\n");
 908                 ndev->stats.tx_dropped++;
 909                 return NET_XMIT_DROP;
 910         }
 911
 912         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 913             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 914                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 915
 916         q_idx = skb_get_queue_mapping(skb);
 917         if (q_idx >= cpsw->tx_ch_num)
 918                 q_idx = q_idx % cpsw->tx_ch_num;
 919
 920         txch = cpsw->txv[q_idx].ch;
 921         txq = netdev_get_tx_queue(ndev, q_idx);
 922         skb_tx_timestamp(skb);
 923         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 924                                 priv->emac_port + cpsw->data.dual_emac);
 925         if (unlikely(ret != 0)) {
 926                 cpsw_err(priv, tx_err, "desc submit failed\n");
 927                 goto fail;
 928         }
 929
 930         /* If there is no more tx desc left free then we need to
 931          * tell the kernel to stop sending us tx frames.
 932          */
 933         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 934                 netif_tx_stop_queue(txq);
 935
 936                 /* Barrier, so that stop_queue visible to other cpus */
 937                 smp_mb__after_atomic();
 938
 939                 if (cpdma_check_free_tx_desc(txch))
 940                         netif_tx_wake_queue(txq);
 941         }
 942
 943         return NETDEV_TX_OK;
 944 fail:
 945         ndev->stats.tx_dropped++;
 946         netif_tx_stop_queue(txq);
 947
 948         /* Barrier, so that stop_queue visible to other cpus */
 949         smp_mb__after_atomic();
 950
 951         if (cpdma_check_free_tx_desc(txch))
 952                 netif_tx_wake_queue(txq);
 953
 954         return NETDEV_TX_BUSY;
 955 }
 956
 957 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 958 {
 959         struct cpsw_priv *priv = netdev_priv(ndev);
 960         struct sockaddr *addr = (struct sockaddr *)p;
 961         struct cpsw_common *cpsw = priv->cpsw;
 962         int flags = 0;
 963         u16 vid = 0;
 964         int ret;
 965
 966         if (!is_valid_ether_addr(addr->sa_data))
 967                 return -EADDRNOTAVAIL;
 968
 969         ret = pm_runtime_resume_and_get(cpsw->dev);
 970         if (ret < 0)
 971                 return ret;
 972
 973         if (cpsw->data.dual_emac) {
 974                 vid = cpsw->slaves[priv->emac_port].port_vlan;
 975                 flags = ALE_VLAN;
 976         }
 977
 978         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 979                            flags, vid);
 980         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
 981                            flags, vid);
 982
 983         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
 984         eth_hw_addr_set(ndev, priv->mac_addr);
 985         for_each_slave(priv, cpsw_set_slave_mac, priv);
 986
 987         pm_runtime_put(cpsw->dev);
 988
 989         return 0;
 990 }
 991
 992 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 993                                 unsigned short vid)
 994 {
 995         int ret;
 996         int unreg_mcast_mask = 0;
 997         int mcast_mask;
 998         u32 port_mask;
 999         struct cpsw_common *cpsw = priv->cpsw;
1000
1001         if (cpsw->data.dual_emac) {
1002                 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1003
1004                 mcast_mask = ALE_PORT_HOST;
1005                 if (priv->ndev->flags & IFF_ALLMULTI)
1006                         unreg_mcast_mask = mcast_mask;
1007         } else {
1008                 port_mask = ALE_ALL_PORTS;
1009                 mcast_mask = port_mask;
1010
1011                 if (priv->ndev->flags & IFF_ALLMULTI)
1012                         unreg_mcast_mask = ALE_ALL_PORTS;
1013                 else
1014                         unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1015         }
1016
1017         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1018                                 unreg_mcast_mask);
1019         if (ret != 0)
1020                 return ret;
1021
1022         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1023                                  HOST_PORT_NUM, ALE_VLAN, vid);
1024         if (ret != 0)
1025                 goto clean_vid;
1026
1027         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1028                                  mcast_mask, ALE_VLAN, vid, 0);
1029         if (ret != 0)
1030                 goto clean_vlan_ucast;
1031         return 0;
1032
1033 clean_vlan_ucast:
1034         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1035                            HOST_PORT_NUM, ALE_VLAN, vid);
1036 clean_vid:
1037         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1038         return ret;
1039 }
1040
1041 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1042                                     __be16 proto, u16 vid)
1043 {
1044         struct cpsw_priv *priv = netdev_priv(ndev);
1045         struct cpsw_common *cpsw = priv->cpsw;
1046         int ret;
1047
1048         if (vid == cpsw->data.default_vlan)
1049                 return 0;
1050
1051         ret = pm_runtime_resume_and_get(cpsw->dev);
1052         if (ret < 0)
1053                 return ret;
1054
1055         if (cpsw->data.dual_emac) {
1056                 /* In dual EMAC, reserved VLAN id should not be used for
1057                  * creating VLAN interfaces as this can break the dual
1058                  * EMAC port separation
1059                  */
1060                 int i;
1061
1062                 for (i = 0; i < cpsw->data.slaves; i++) {
1063                         if (vid == cpsw->slaves[i].port_vlan) {
1064                                 ret = -EINVAL;
1065                                 goto err;
1066                         }
1067                 }
1068         }
1069
1070         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1071         ret = cpsw_add_vlan_ale_entry(priv, vid);
1072 err:
1073         pm_runtime_put(cpsw->dev);
1074         return ret;
1075 }
1076
1077 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1078                                      __be16 proto, u16 vid)
1079 {
1080         struct cpsw_priv *priv = netdev_priv(ndev);
1081         struct cpsw_common *cpsw = priv->cpsw;
1082         int ret;
1083
1084         if (vid == cpsw->data.default_vlan)
1085                 return 0;
1086
1087         ret = pm_runtime_resume_and_get(cpsw->dev);
1088         if (ret < 0)
1089                 return ret;
1090
1091         if (cpsw->data.dual_emac) {
1092                 int i;
1093
1094                 for (i = 0; i < cpsw->data.slaves; i++) {
1095                         if (vid == cpsw->slaves[i].port_vlan)
1096                                 goto err;
1097                 }
1098         }
1099
1100         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1101         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1102         ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1103                                   HOST_PORT_NUM, ALE_VLAN, vid);
1104         ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1105                                   0, ALE_VLAN, vid);
1106         ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1107 err:
1108         pm_runtime_put(cpsw->dev);
1109         return ret;
1110 }
1111
1112 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1113                              struct xdp_frame **frames, u32 flags)
1114 {
1115         struct cpsw_priv *priv = netdev_priv(ndev);
1116         struct cpsw_common *cpsw = priv->cpsw;
1117         struct xdp_frame *xdpf;
1118         int i, nxmit = 0, port;
1119
1120         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1121                 return -EINVAL;
1122
1123         for (i = 0; i < n; i++) {
1124                 xdpf = frames[i];
1125                 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1126                         break;
1127
1128                 port = priv->emac_port + cpsw->data.dual_emac;
1129                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1130                         break;
1131                 nxmit++;
1132         }
1133
1134         return nxmit;
1135 }
1136
1137 #ifdef CONFIG_NET_POLL_CONTROLLER
1138 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1139 {
1140         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1141
1142         cpsw_intr_disable(cpsw);
1143         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1144         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1145         cpsw_intr_enable(cpsw);
1146 }
1147 #endif
1148
1149 static const struct net_device_ops cpsw_netdev_ops = {
1150         .ndo_open               = cpsw_ndo_open,
1151         .ndo_stop               = cpsw_ndo_stop,
1152         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1153         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1154         .ndo_eth_ioctl          = cpsw_ndo_ioctl,
1155         .ndo_validate_addr      = eth_validate_addr,
1156         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1157         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1158         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1159 #ifdef CONFIG_NET_POLL_CONTROLLER
1160         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1161 #endif
1162         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1163         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1164         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1165         .ndo_bpf                = cpsw_ndo_bpf,
1166         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1167 };
1168
1169 static void cpsw_get_drvinfo(struct net_device *ndev,
1170                              struct ethtool_drvinfo *info)
1171 {
1172         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1173         struct platform_device  *pdev = to_platform_device(cpsw->dev);
1174
1175         strscpy(info->driver, "cpsw", sizeof(info->driver));
1176         strscpy(info->version, "1.0", sizeof(info->version));
1177         strscpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1178 }
1179
1180 static int cpsw_set_pauseparam(struct net_device *ndev,
1181                                struct ethtool_pauseparam *pause)
1182 {
1183         struct cpsw_priv *priv = netdev_priv(ndev);
1184         bool link;
1185
1186         priv->rx_pause = pause->rx_pause ? true : false;
1187         priv->tx_pause = pause->tx_pause ? true : false;
1188
1189         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1190         return 0;
1191 }
1192
1193 static int cpsw_set_channels(struct net_device *ndev,
1194                              struct ethtool_channels *chs)
1195 {
1196         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1197 }
1198
1199 static const struct ethtool_ops cpsw_ethtool_ops = {
1200         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1201         .get_drvinfo    = cpsw_get_drvinfo,
1202         .get_msglevel   = cpsw_get_msglevel,
1203         .set_msglevel   = cpsw_set_msglevel,
1204         .get_link       = ethtool_op_get_link,
1205         .get_ts_info    = cpsw_get_ts_info,
1206         .get_coalesce   = cpsw_get_coalesce,
1207         .set_coalesce   = cpsw_set_coalesce,
1208         .get_sset_count         = cpsw_get_sset_count,
1209         .get_strings            = cpsw_get_strings,
1210         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1211         .get_pauseparam         = cpsw_get_pauseparam,
1212         .set_pauseparam         = cpsw_set_pauseparam,
1213         .get_wol        = cpsw_get_wol,
1214         .set_wol        = cpsw_set_wol,
1215         .get_regs_len   = cpsw_get_regs_len,
1216         .get_regs       = cpsw_get_regs,
1217         .begin          = cpsw_ethtool_op_begin,
1218         .complete       = cpsw_ethtool_op_complete,
1219         .get_channels   = cpsw_get_channels,
1220         .set_channels   = cpsw_set_channels,
1221         .get_link_ksettings     = cpsw_get_link_ksettings,
1222         .set_link_ksettings     = cpsw_set_link_ksettings,
1223         .get_eee        = cpsw_get_eee,
1224         .set_eee        = cpsw_set_eee,
1225         .nway_reset     = cpsw_nway_reset,
1226         .get_ringparam = cpsw_get_ringparam,
1227         .set_ringparam = cpsw_set_ringparam,
1228 };
1229
1230 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1231                          struct platform_device *pdev)
1232 {
1233         struct device_node *node = pdev->dev.of_node;
1234         struct device_node *slave_node;
1235         int i = 0, ret;
1236         u32 prop;
1237
1238         if (!node)
1239                 return -EINVAL;
1240
1241         if (of_property_read_u32(node, "slaves", &prop)) {
1242                 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1243                 return -EINVAL;
1244         }
1245         data->slaves = prop;
1246
1247         if (of_property_read_u32(node, "active_slave", &prop)) {
1248                 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1249                 return -EINVAL;
1250         }
1251         data->active_slave = prop;
1252
1253         data->slave_data = devm_kcalloc(&pdev->dev,
1254                                         data->slaves,
1255                                         sizeof(struct cpsw_slave_data),
1256                                         GFP_KERNEL);
1257         if (!data->slave_data)
1258                 return -ENOMEM;
1259
1260         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1261                 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1262                 return -EINVAL;
1263         }
1264         data->channels = prop;
1265
1266         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1267                 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1268                 return -EINVAL;
1269         }
1270         data->bd_ram_size = prop;
1271
1272         if (of_property_read_u32(node, "mac_control", &prop)) {
1273                 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1274                 return -EINVAL;
1275         }
1276         data->mac_control = prop;
1277
1278         if (of_property_read_bool(node, "dual_emac"))
1279                 data->dual_emac = true;
1280
1281         /*
1282          * Populate all the child nodes here...
1283          */
1284         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1285         /* We do not want to force this, as in some cases may not have child */
1286         if (ret)
1287                 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1288
1289         for_each_available_child_of_node(node, slave_node) {
1290                 struct cpsw_slave_data *slave_data = data->slave_data + i;
1291                 int lenp;
1292                 const __be32 *parp;
1293
1294                 /* This is no slave child node, continue */
1295                 if (!of_node_name_eq(slave_node, "slave"))
1296                         continue;
1297
1298                 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1299                                                     NULL);
1300                 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1301                     IS_ERR(slave_data->ifphy)) {
1302                         ret = PTR_ERR(slave_data->ifphy);
1303                         dev_err(&pdev->dev,
1304                                 "%d: Error retrieving port phy: %d\n", i, ret);
1305                         goto err_node_put;
1306                 }
1307
1308                 slave_data->slave_node = slave_node;
1309                 slave_data->phy_node = of_parse_phandle(slave_node,
1310                                                         "phy-handle", 0);
1311                 parp = of_get_property(slave_node, "phy_id", &lenp);
1312                 if (slave_data->phy_node) {
1313                         dev_dbg(&pdev->dev,
1314                                 "slave[%d] using phy-handle=\"%pOF\"\n",
1315                                 i, slave_data->phy_node);
1316                 } else if (of_phy_is_fixed_link(slave_node)) {
1317                         /* In the case of a fixed PHY, the DT node associated
1318                          * to the PHY is the Ethernet MAC DT node.
1319                          */
1320                         ret = of_phy_register_fixed_link(slave_node);
1321                         if (ret) {
1322                                 dev_err_probe(&pdev->dev, ret, "failed to register fixed-link phy\n");
1323                                 goto err_node_put;
1324                         }
1325                         slave_data->phy_node = of_node_get(slave_node);
1326                 } else if (parp) {
1327                         u32 phyid;
1328                         struct device_node *mdio_node;
1329                         struct platform_device *mdio;
1330
1331                         if (lenp != (sizeof(__be32) * 2)) {
1332                                 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1333                                 goto no_phy_slave;
1334                         }
1335                         mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1336                         phyid = be32_to_cpup(parp+1);
1337                         mdio = of_find_device_by_node(mdio_node);
1338                         of_node_put(mdio_node);
1339                         if (!mdio) {
1340                                 dev_err(&pdev->dev, "Missing mdio platform device\n");
1341                                 ret = -EINVAL;
1342                                 goto err_node_put;
1343                         }
1344                         snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1345                                  PHY_ID_FMT, mdio->name, phyid);
1346                         put_device(&mdio->dev);
1347                 } else {
1348                         dev_err(&pdev->dev,
1349                                 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1350                                 i);
1351                         goto no_phy_slave;
1352                 }
1353                 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1354                 if (ret) {
1355                         dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1356                                 i);
1357                         goto err_node_put;
1358                 }
1359
1360 no_phy_slave:
1361                 ret = of_get_mac_address(slave_node, slave_data->mac_addr);
1362                 if (ret) {
1363                         ret = ti_cm_get_macid(&pdev->dev, i,
1364                                               slave_data->mac_addr);
1365                         if (ret)
1366                                 goto err_node_put;
1367                 }
1368                 if (data->dual_emac) {
1369                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1370                                                  &prop)) {
1371                                 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1372                                 slave_data->dual_emac_res_vlan = i+1;
1373                                 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1374                                         slave_data->dual_emac_res_vlan, i);
1375                         } else {
1376                                 slave_data->dual_emac_res_vlan = prop;
1377                         }
1378                 }
1379
1380                 i++;
1381                 if (i == data->slaves) {
1382                         ret = 0;
1383                         goto err_node_put;
1384                 }
1385         }
1386
1387         return 0;
1388
1389 err_node_put:
1390         of_node_put(slave_node);
1391         return ret;
1392 }
1393
1394 static void cpsw_remove_dt(struct platform_device *pdev)
1395 {
1396         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1397         struct cpsw_platform_data *data = &cpsw->data;
1398         struct device_node *node = pdev->dev.of_node;
1399         struct device_node *slave_node;
1400         int i = 0;
1401
1402         for_each_available_child_of_node(node, slave_node) {
1403                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1404
1405                 if (!of_node_name_eq(slave_node, "slave"))
1406                         continue;
1407
1408                 if (of_phy_is_fixed_link(slave_node))
1409                         of_phy_deregister_fixed_link(slave_node);
1410
1411                 of_node_put(slave_data->phy_node);
1412
1413                 i++;
1414                 if (i == data->slaves) {
1415                         of_node_put(slave_node);
1416                         break;
1417                 }
1418         }
1419
1420         of_platform_depopulate(&pdev->dev);
1421 }
1422
1423 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1424 {
1425         struct cpsw_common              *cpsw = priv->cpsw;
1426         struct cpsw_platform_data       *data = &cpsw->data;
1427         struct net_device               *ndev;
1428         struct cpsw_priv                *priv_sl2;
1429         int ret = 0;
1430
1431         ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1432                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1433         if (!ndev) {
1434                 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1435                 return -ENOMEM;
1436         }
1437
1438         priv_sl2 = netdev_priv(ndev);
1439         priv_sl2->cpsw = cpsw;
1440         priv_sl2->ndev = ndev;
1441         priv_sl2->dev  = &ndev->dev;
1442         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1443
1444         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1445                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1446                         ETH_ALEN);
1447                 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1448                          priv_sl2->mac_addr);
1449         } else {
1450                 eth_random_addr(priv_sl2->mac_addr);
1451                 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1452                          priv_sl2->mac_addr);
1453         }
1454         eth_hw_addr_set(ndev, priv_sl2->mac_addr);
1455
1456         priv_sl2->emac_port = 1;
1457         cpsw->slaves[1].ndev = ndev;
1458         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1459
1460         ndev->netdev_ops = &cpsw_netdev_ops;
1461         ndev->ethtool_ops = &cpsw_ethtool_ops;
1462
1463         /* register the network device */
1464         SET_NETDEV_DEV(ndev, cpsw->dev);
1465         ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1466         ret = register_netdev(ndev);
1467         if (ret)
1468                 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1469
1470         return ret;
1471 }
1472
1473 static const struct of_device_id cpsw_of_mtable[] = {
1474         { .compatible = "ti,cpsw"},
1475         { .compatible = "ti,am335x-cpsw"},
1476         { .compatible = "ti,am4372-cpsw"},
1477         { .compatible = "ti,dra7-cpsw"},
1478         { /* sentinel */ },
1479 };
1480 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1481
1482 static const struct soc_device_attribute cpsw_soc_devices[] = {
1483         { .family = "AM33xx", .revision = "ES1.0"},
1484         { /* sentinel */ }
1485 };
1486
1487 static int cpsw_probe(struct platform_device *pdev)
1488 {
1489         struct device                   *dev = &pdev->dev;
1490         struct clk                      *clk;
1491         struct cpsw_platform_data       *data;
1492         struct net_device               *ndev;
1493         struct cpsw_priv                *priv;
1494         void __iomem                    *ss_regs;
1495         struct resource                 *ss_res;
1496         struct gpio_descs               *mode;
1497         const struct soc_device_attribute *soc;
1498         struct cpsw_common              *cpsw;
1499         int ret = 0, ch;
1500         int irq;
1501
1502         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1503         if (!cpsw)
1504                 return -ENOMEM;
1505
1506         platform_set_drvdata(pdev, cpsw);
1507         cpsw_slave_index = cpsw_slave_index_priv;
1508
1509         cpsw->dev = dev;
1510
1511         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1512         if (IS_ERR(mode)) {
1513                 ret = PTR_ERR(mode);
1514                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1515                 return ret;
1516         }
1517
1518         clk = devm_clk_get(dev, "fck");
1519         if (IS_ERR(clk)) {
1520                 ret = PTR_ERR(clk);
1521                 dev_err(dev, "fck is not found %d\n", ret);
1522                 return ret;
1523         }
1524         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1525
1526         ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1527         if (IS_ERR(ss_regs))
1528                 return PTR_ERR(ss_regs);
1529         cpsw->regs = ss_regs;
1530
1531         cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1532         if (IS_ERR(cpsw->wr_regs))
1533                 return PTR_ERR(cpsw->wr_regs);
1534
1535         /* RX IRQ */
1536         irq = platform_get_irq(pdev, 1);
1537         if (irq < 0)
1538                 return irq;
1539         cpsw->irqs_table[0] = irq;
1540
1541         /* TX IRQ */
1542         irq = platform_get_irq(pdev, 2);
1543         if (irq < 0)
1544                 return irq;
1545         cpsw->irqs_table[1] = irq;
1546
1547         /* get misc irq*/
1548         irq = platform_get_irq(pdev, 3);
1549         if (irq <= 0)
1550                 return irq;
1551         cpsw->misc_irq = irq;
1552
1553         /*
1554          * This may be required here for child devices.
1555          */
1556         pm_runtime_enable(dev);
1557
1558         /* Need to enable clocks with runtime PM api to access module
1559          * registers
1560          */
1561         ret = pm_runtime_resume_and_get(dev);
1562         if (ret < 0)
1563                 goto clean_runtime_disable_ret;
1564
1565         ret = cpsw_probe_dt(&cpsw->data, pdev);
1566         if (ret)
1567                 goto clean_dt_ret;
1568
1569         soc = soc_device_match(cpsw_soc_devices);
1570         if (soc)
1571                 cpsw->quirk_irq = true;
1572
1573         data = &cpsw->data;
1574         cpsw->slaves = devm_kcalloc(dev,
1575                                     data->slaves, sizeof(struct cpsw_slave),
1576                                     GFP_KERNEL);
1577         if (!cpsw->slaves) {
1578                 ret = -ENOMEM;
1579                 goto clean_dt_ret;
1580         }
1581
1582         cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1583         cpsw->descs_pool_size = descs_pool_size;
1584
1585         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1586                                ss_res->start + CPSW2_BD_OFFSET,
1587                                descs_pool_size);
1588         if (ret)
1589                 goto clean_dt_ret;
1590
1591         ch = cpsw->quirk_irq ? 0 : 7;
1592         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1593         if (IS_ERR(cpsw->txv[0].ch)) {
1594                 dev_err(dev, "error initializing tx dma channel\n");
1595                 ret = PTR_ERR(cpsw->txv[0].ch);
1596                 goto clean_cpts;
1597         }
1598
1599         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1600         if (IS_ERR(cpsw->rxv[0].ch)) {
1601                 dev_err(dev, "error initializing rx dma channel\n");
1602                 ret = PTR_ERR(cpsw->rxv[0].ch);
1603                 goto clean_cpts;
1604         }
1605         cpsw_split_res(cpsw);
1606
1607         /* setup netdev */
1608         ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1609                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1610         if (!ndev) {
1611                 dev_err(dev, "error allocating net_device\n");
1612                 ret = -ENOMEM;
1613                 goto clean_cpts;
1614         }
1615
1616         priv = netdev_priv(ndev);
1617         priv->cpsw = cpsw;
1618         priv->ndev = ndev;
1619         priv->dev  = dev;
1620         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1621         priv->emac_port = 0;
1622
1623         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1624                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1625                 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1626         } else {
1627                 eth_random_addr(priv->mac_addr);
1628                 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1629         }
1630
1631         eth_hw_addr_set(ndev, priv->mac_addr);
1632
1633         cpsw->slaves[0].ndev = ndev;
1634
1635         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1636
1637         ndev->netdev_ops = &cpsw_netdev_ops;
1638         ndev->ethtool_ops = &cpsw_ethtool_ops;
1639         netif_napi_add(ndev, &cpsw->napi_rx,
1640                        cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll);
1641         netif_napi_add_tx(ndev, &cpsw->napi_tx,
1642                           cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll);
1643
1644         /* register the network device */
1645         SET_NETDEV_DEV(ndev, dev);
1646         ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1647         ret = register_netdev(ndev);
1648         if (ret) {
1649                 dev_err(dev, "error registering net device\n");
1650                 ret = -ENODEV;
1651                 goto clean_cpts;
1652         }
1653
1654         if (cpsw->data.dual_emac) {
1655                 ret = cpsw_probe_dual_emac(priv);
1656                 if (ret) {
1657                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1658                         goto clean_unregister_netdev_ret;
1659                 }
1660         }
1661
1662         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1663          * MISC IRQs which are always kept disabled with this driver so
1664          * we will not request them.
1665          *
1666          * If anyone wants to implement support for those, make sure to
1667          * first request and append them to irqs_table array.
1668          */
1669         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1670                                0, dev_name(dev), cpsw);
1671         if (ret < 0) {
1672                 dev_err(dev, "error attaching irq (%d)\n", ret);
1673                 goto clean_unregister_netdev_ret;
1674         }
1675
1676
1677         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1678                                0, dev_name(&pdev->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         if (!cpsw->cpts)
1685                 goto skip_cpts;
1686
1687         ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1688                                0, dev_name(&pdev->dev), cpsw);
1689         if (ret < 0) {
1690                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1691                 goto clean_unregister_netdev_ret;
1692         }
1693
1694         /* Enable misc CPTS evnt_pend IRQ */
1695         cpts_set_irqpoll(cpsw->cpts, false);
1696
1697 skip_cpts:
1698         cpsw_notice(priv, probe,
1699                     "initialized device (regs %pa, irq %d, pool size %d)\n",
1700                     &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1701
1702         pm_runtime_put(&pdev->dev);
1703
1704         return 0;
1705
1706 clean_unregister_netdev_ret:
1707         unregister_netdev(ndev);
1708 clean_cpts:
1709         cpts_release(cpsw->cpts);
1710         cpdma_ctlr_destroy(cpsw->dma);
1711 clean_dt_ret:
1712         cpsw_remove_dt(pdev);
1713         pm_runtime_put_sync(&pdev->dev);
1714 clean_runtime_disable_ret:
1715         pm_runtime_disable(&pdev->dev);
1716         return ret;
1717 }
1718
1719 static int cpsw_remove(struct platform_device *pdev)
1720 {
1721         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1722         int i, ret;
1723
1724         ret = pm_runtime_resume_and_get(&pdev->dev);
1725         if (ret < 0)
1726                 return ret;
1727
1728         for (i = 0; i < cpsw->data.slaves; i++)
1729                 if (cpsw->slaves[i].ndev)
1730                         unregister_netdev(cpsw->slaves[i].ndev);
1731
1732         cpts_release(cpsw->cpts);
1733         cpdma_ctlr_destroy(cpsw->dma);
1734         cpsw_remove_dt(pdev);
1735         pm_runtime_put_sync(&pdev->dev);
1736         pm_runtime_disable(&pdev->dev);
1737         return 0;
1738 }
1739
1740 #ifdef CONFIG_PM_SLEEP
1741 static int cpsw_suspend(struct device *dev)
1742 {
1743         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1744         int i;
1745
1746         rtnl_lock();
1747
1748         for (i = 0; i < cpsw->data.slaves; i++)
1749                 if (cpsw->slaves[i].ndev)
1750                         if (netif_running(cpsw->slaves[i].ndev))
1751                                 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1752
1753         rtnl_unlock();
1754
1755         /* Select sleep pin state */
1756         pinctrl_pm_select_sleep_state(dev);
1757
1758         return 0;
1759 }
1760
1761 static int cpsw_resume(struct device *dev)
1762 {
1763         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1764         int i;
1765
1766         /* Select default pin state */
1767         pinctrl_pm_select_default_state(dev);
1768
1769         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1770         rtnl_lock();
1771
1772         for (i = 0; i < cpsw->data.slaves; i++)
1773                 if (cpsw->slaves[i].ndev)
1774                         if (netif_running(cpsw->slaves[i].ndev))
1775                                 cpsw_ndo_open(cpsw->slaves[i].ndev);
1776
1777         rtnl_unlock();
1778
1779         return 0;
1780 }
1781 #endif
1782
1783 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1784
1785 static struct platform_driver cpsw_driver = {
1786         .driver = {
1787                 .name    = "cpsw",
1788                 .pm      = &cpsw_pm_ops,
1789                 .of_match_table = cpsw_of_mtable,
1790         },
1791         .probe = cpsw_probe,
1792         .remove = cpsw_remove,
1793 };
1794
1795 module_platform_driver(cpsw_driver);
1796
1797 MODULE_LICENSE("GPL");
1798 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1799 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1800 MODULE_DESCRIPTION("TI CPSW Ethernet driver");