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                 int headroom = CPSW_HEADROOM, 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, page, pool);
 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;
 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_get_sync(cpsw->dev);
 760         if (ret < 0) {
 761                 pm_runtime_put_noidle(cpsw->dev);
 762                 return ret;
 763         }
 764
 765         netif_carrier_off(ndev);
 766
 767         /* Notify the stack of the actual queue counts. */
 768         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 769         if (ret) {
 770                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 771                 goto err_cleanup;
 772         }
 773
 774         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 775         if (ret) {
 776                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 777                 goto err_cleanup;
 778         }
 779
 780         reg = cpsw->version;
 781
 782         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
 783                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
 784                  CPSW_RTL_VERSION(reg));
 785
 786         /* Initialize host and slave ports */
 787         if (!cpsw->usage_count)
 788                 cpsw_init_host_port(priv);
 789         for_each_slave(priv, cpsw_slave_open, priv);
 790
 791         /* Add default VLAN */
 792         if (!cpsw->data.dual_emac)
 793                 cpsw_add_default_vlan(priv);
 794         else
 795                 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
 796                                   ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 797
 798         /* initialize shared resources for every ndev */
 799         if (!cpsw->usage_count) {
 800                 /* disable priority elevation */
 801                 writel_relaxed(0, &cpsw->regs->ptype);
 802
 803                 /* enable statistics collection only on all ports */
 804                 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 805
 806                 /* Enable internal fifo flow control */
 807                 writel(0x7, &cpsw->regs->flow_control);
 808
 809                 napi_enable(&cpsw->napi_rx);
 810                 napi_enable(&cpsw->napi_tx);
 811
 812                 if (cpsw->tx_irq_disabled) {
 813                         cpsw->tx_irq_disabled = false;
 814                         enable_irq(cpsw->irqs_table[1]);
 815                 }
 816
 817                 if (cpsw->rx_irq_disabled) {
 818                         cpsw->rx_irq_disabled = false;
 819                         enable_irq(cpsw->irqs_table[0]);
 820                 }
 821
 822                 /* create rxqs for both infs in dual mac as they use same pool
 823                  * and must be destroyed together when no users.
 824                  */
 825                 ret = cpsw_create_xdp_rxqs(cpsw);
 826                 if (ret < 0)
 827                         goto err_cleanup;
 828
 829                 ret = cpsw_fill_rx_channels(priv);
 830                 if (ret < 0)
 831                         goto err_cleanup;
 832
 833                 if (cpsw->cpts) {
 834                         if (cpts_register(cpsw->cpts))
 835                                 dev_err(priv->dev, "error registering cpts device\n");
 836                         else
 837                                 writel(0x10, &cpsw->wr_regs->misc_en);
 838                 }
 839         }
 840
 841         cpsw_restore(priv);
 842
 843         /* Enable Interrupt pacing if configured */
 844         if (cpsw->coal_intvl != 0) {
 845                 struct ethtool_coalesce coal;
 846
 847                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 848                 cpsw_set_coalesce(ndev, &coal);
 849         }
 850
 851         cpdma_ctlr_start(cpsw->dma);
 852         cpsw_intr_enable(cpsw);
 853         cpsw->usage_count++;
 854
 855         return 0;
 856
 857 err_cleanup:
 858         if (!cpsw->usage_count) {
 859                 cpdma_ctlr_stop(cpsw->dma);
 860                 cpsw_destroy_xdp_rxqs(cpsw);
 861         }
 862
 863         for_each_slave(priv, cpsw_slave_stop, cpsw);
 864         pm_runtime_put_sync(cpsw->dev);
 865         netif_carrier_off(priv->ndev);
 866         return ret;
 867 }
 868
 869 static int cpsw_ndo_stop(struct net_device *ndev)
 870 {
 871         struct cpsw_priv *priv = netdev_priv(ndev);
 872         struct cpsw_common *cpsw = priv->cpsw;
 873
 874         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
 875         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 876         netif_tx_stop_all_queues(priv->ndev);
 877         netif_carrier_off(priv->ndev);
 878
 879         if (cpsw->usage_count <= 1) {
 880                 napi_disable(&cpsw->napi_rx);
 881                 napi_disable(&cpsw->napi_tx);
 882                 cpts_unregister(cpsw->cpts);
 883                 cpsw_intr_disable(cpsw);
 884                 cpdma_ctlr_stop(cpsw->dma);
 885                 cpsw_ale_stop(cpsw->ale);
 886                 cpsw_destroy_xdp_rxqs(cpsw);
 887         }
 888         for_each_slave(priv, cpsw_slave_stop, cpsw);
 889
 890         if (cpsw_need_resplit(cpsw))
 891                 cpsw_split_res(cpsw);
 892
 893         cpsw->usage_count--;
 894         pm_runtime_put_sync(cpsw->dev);
 895         return 0;
 896 }
 897
 898 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 899                                        struct net_device *ndev)
 900 {
 901         struct cpsw_priv *priv = netdev_priv(ndev);
 902         struct cpsw_common *cpsw = priv->cpsw;
 903         struct cpts *cpts = cpsw->cpts;
 904         struct netdev_queue *txq;
 905         struct cpdma_chan *txch;
 906         int ret, q_idx;
 907
 908         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 909                 cpsw_err(priv, tx_err, "packet pad failed\n");
 910                 ndev->stats.tx_dropped++;
 911                 return NET_XMIT_DROP;
 912         }
 913
 914         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 915             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 916                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 917
 918         q_idx = skb_get_queue_mapping(skb);
 919         if (q_idx >= cpsw->tx_ch_num)
 920                 q_idx = q_idx % cpsw->tx_ch_num;
 921
 922         txch = cpsw->txv[q_idx].ch;
 923         txq = netdev_get_tx_queue(ndev, q_idx);
 924         skb_tx_timestamp(skb);
 925         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 926                                 priv->emac_port + cpsw->data.dual_emac);
 927         if (unlikely(ret != 0)) {
 928                 cpsw_err(priv, tx_err, "desc submit failed\n");
 929                 goto fail;
 930         }
 931
 932         /* If there is no more tx desc left free then we need to
 933          * tell the kernel to stop sending us tx frames.
 934          */
 935         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 936                 netif_tx_stop_queue(txq);
 937
 938                 /* Barrier, so that stop_queue visible to other cpus */
 939                 smp_mb__after_atomic();
 940
 941                 if (cpdma_check_free_tx_desc(txch))
 942                         netif_tx_wake_queue(txq);
 943         }
 944
 945         return NETDEV_TX_OK;
 946 fail:
 947         ndev->stats.tx_dropped++;
 948         netif_tx_stop_queue(txq);
 949
 950         /* Barrier, so that stop_queue visible to other cpus */
 951         smp_mb__after_atomic();
 952
 953         if (cpdma_check_free_tx_desc(txch))
 954                 netif_tx_wake_queue(txq);
 955
 956         return NETDEV_TX_BUSY;
 957 }
 958
 959 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 960 {
 961         struct cpsw_priv *priv = netdev_priv(ndev);
 962         struct sockaddr *addr = (struct sockaddr *)p;
 963         struct cpsw_common *cpsw = priv->cpsw;
 964         int flags = 0;
 965         u16 vid = 0;
 966         int ret;
 967
 968         if (!is_valid_ether_addr(addr->sa_data))
 969                 return -EADDRNOTAVAIL;
 970
 971         ret = pm_runtime_get_sync(cpsw->dev);
 972         if (ret < 0) {
 973                 pm_runtime_put_noidle(cpsw->dev);
 974                 return ret;
 975         }
 976
 977         if (cpsw->data.dual_emac) {
 978                 vid = cpsw->slaves[priv->emac_port].port_vlan;
 979                 flags = ALE_VLAN;
 980         }
 981
 982         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 983                            flags, vid);
 984         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
 985                            flags, vid);
 986
 987         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
 988         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
 989         for_each_slave(priv, cpsw_set_slave_mac, priv);
 990
 991         pm_runtime_put(cpsw->dev);
 992
 993         return 0;
 994 }
 995
 996 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 997                                 unsigned short vid)
 998 {
 999         int ret;
1000         int unreg_mcast_mask = 0;
1001         int mcast_mask;
1002         u32 port_mask;
1003         struct cpsw_common *cpsw = priv->cpsw;
1004
1005         if (cpsw->data.dual_emac) {
1006                 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1007
1008                 mcast_mask = ALE_PORT_HOST;
1009                 if (priv->ndev->flags & IFF_ALLMULTI)
1010                         unreg_mcast_mask = mcast_mask;
1011         } else {
1012                 port_mask = ALE_ALL_PORTS;
1013                 mcast_mask = port_mask;
1014
1015                 if (priv->ndev->flags & IFF_ALLMULTI)
1016                         unreg_mcast_mask = ALE_ALL_PORTS;
1017                 else
1018                         unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1019         }
1020
1021         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1022                                 unreg_mcast_mask);
1023         if (ret != 0)
1024                 return ret;
1025
1026         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1027                                  HOST_PORT_NUM, ALE_VLAN, vid);
1028         if (ret != 0)
1029                 goto clean_vid;
1030
1031         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1032                                  mcast_mask, ALE_VLAN, vid, 0);
1033         if (ret != 0)
1034                 goto clean_vlan_ucast;
1035         return 0;
1036
1037 clean_vlan_ucast:
1038         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1039                            HOST_PORT_NUM, ALE_VLAN, vid);
1040 clean_vid:
1041         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1042         return ret;
1043 }
1044
1045 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1046                                     __be16 proto, u16 vid)
1047 {
1048         struct cpsw_priv *priv = netdev_priv(ndev);
1049         struct cpsw_common *cpsw = priv->cpsw;
1050         int ret;
1051
1052         if (vid == cpsw->data.default_vlan)
1053                 return 0;
1054
1055         ret = pm_runtime_get_sync(cpsw->dev);
1056         if (ret < 0) {
1057                 pm_runtime_put_noidle(cpsw->dev);
1058                 return ret;
1059         }
1060
1061         if (cpsw->data.dual_emac) {
1062                 /* In dual EMAC, reserved VLAN id should not be used for
1063                  * creating VLAN interfaces as this can break the dual
1064                  * EMAC port separation
1065                  */
1066                 int i;
1067
1068                 for (i = 0; i < cpsw->data.slaves; i++) {
1069                         if (vid == cpsw->slaves[i].port_vlan) {
1070                                 ret = -EINVAL;
1071                                 goto err;
1072                         }
1073                 }
1074         }
1075
1076         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1077         ret = cpsw_add_vlan_ale_entry(priv, vid);
1078 err:
1079         pm_runtime_put(cpsw->dev);
1080         return ret;
1081 }
1082
1083 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1084                                      __be16 proto, u16 vid)
1085 {
1086         struct cpsw_priv *priv = netdev_priv(ndev);
1087         struct cpsw_common *cpsw = priv->cpsw;
1088         int ret;
1089
1090         if (vid == cpsw->data.default_vlan)
1091                 return 0;
1092
1093         ret = pm_runtime_get_sync(cpsw->dev);
1094         if (ret < 0) {
1095                 pm_runtime_put_noidle(cpsw->dev);
1096                 return ret;
1097         }
1098
1099         if (cpsw->data.dual_emac) {
1100                 int i;
1101
1102                 for (i = 0; i < cpsw->data.slaves; i++) {
1103                         if (vid == cpsw->slaves[i].port_vlan)
1104                                 goto err;
1105                 }
1106         }
1107
1108         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1109         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1110         ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1111                                   HOST_PORT_NUM, ALE_VLAN, vid);
1112         ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1113                                   0, ALE_VLAN, vid);
1114         ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1115 err:
1116         pm_runtime_put(cpsw->dev);
1117         return ret;
1118 }
1119
1120 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1121                              struct xdp_frame **frames, u32 flags)
1122 {
1123         struct cpsw_priv *priv = netdev_priv(ndev);
1124         struct cpsw_common *cpsw = priv->cpsw;
1125         struct xdp_frame *xdpf;
1126         int i, nxmit = 0, port;
1127
1128         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1129                 return -EINVAL;
1130
1131         for (i = 0; i < n; i++) {
1132                 xdpf = frames[i];
1133                 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1134                         break;
1135
1136                 port = priv->emac_port + cpsw->data.dual_emac;
1137                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1138                         break;
1139                 nxmit++;
1140         }
1141
1142         return nxmit;
1143 }
1144
1145 #ifdef CONFIG_NET_POLL_CONTROLLER
1146 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1147 {
1148         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1149
1150         cpsw_intr_disable(cpsw);
1151         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1152         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1153         cpsw_intr_enable(cpsw);
1154 }
1155 #endif
1156
1157 static const struct net_device_ops cpsw_netdev_ops = {
1158         .ndo_open               = cpsw_ndo_open,
1159         .ndo_stop               = cpsw_ndo_stop,
1160         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1161         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1162         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1163         .ndo_validate_addr      = eth_validate_addr,
1164         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1165         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1166         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1167 #ifdef CONFIG_NET_POLL_CONTROLLER
1168         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1169 #endif
1170         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1171         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1172         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1173         .ndo_bpf                = cpsw_ndo_bpf,
1174         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1175 };
1176
1177 static void cpsw_get_drvinfo(struct net_device *ndev,
1178                              struct ethtool_drvinfo *info)
1179 {
1180         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1181         struct platform_device  *pdev = to_platform_device(cpsw->dev);
1182
1183         strlcpy(info->driver, "cpsw", sizeof(info->driver));
1184         strlcpy(info->version, "1.0", sizeof(info->version));
1185         strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1186 }
1187
1188 static int cpsw_set_pauseparam(struct net_device *ndev,
1189                                struct ethtool_pauseparam *pause)
1190 {
1191         struct cpsw_priv *priv = netdev_priv(ndev);
1192         bool link;
1193
1194         priv->rx_pause = pause->rx_pause ? true : false;
1195         priv->tx_pause = pause->tx_pause ? true : false;
1196
1197         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1198         return 0;
1199 }
1200
1201 static int cpsw_set_channels(struct net_device *ndev,
1202                              struct ethtool_channels *chs)
1203 {
1204         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1205 }
1206
1207 static const struct ethtool_ops cpsw_ethtool_ops = {
1208         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1209         .get_drvinfo    = cpsw_get_drvinfo,
1210         .get_msglevel   = cpsw_get_msglevel,
1211         .set_msglevel   = cpsw_set_msglevel,
1212         .get_link       = ethtool_op_get_link,
1213         .get_ts_info    = cpsw_get_ts_info,
1214         .get_coalesce   = cpsw_get_coalesce,
1215         .set_coalesce   = cpsw_set_coalesce,
1216         .get_sset_count         = cpsw_get_sset_count,
1217         .get_strings            = cpsw_get_strings,
1218         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1219         .get_pauseparam         = cpsw_get_pauseparam,
1220         .set_pauseparam         = cpsw_set_pauseparam,
1221         .get_wol        = cpsw_get_wol,
1222         .set_wol        = cpsw_set_wol,
1223         .get_regs_len   = cpsw_get_regs_len,
1224         .get_regs       = cpsw_get_regs,
1225         .begin          = cpsw_ethtool_op_begin,
1226         .complete       = cpsw_ethtool_op_complete,
1227         .get_channels   = cpsw_get_channels,
1228         .set_channels   = cpsw_set_channels,
1229         .get_link_ksettings     = cpsw_get_link_ksettings,
1230         .set_link_ksettings     = cpsw_set_link_ksettings,
1231         .get_eee        = cpsw_get_eee,
1232         .set_eee        = cpsw_set_eee,
1233         .nway_reset     = cpsw_nway_reset,
1234         .get_ringparam = cpsw_get_ringparam,
1235         .set_ringparam = cpsw_set_ringparam,
1236 };
1237
1238 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1239                          struct platform_device *pdev)
1240 {
1241         struct device_node *node = pdev->dev.of_node;
1242         struct device_node *slave_node;
1243         int i = 0, ret;
1244         u32 prop;
1245
1246         if (!node)
1247                 return -EINVAL;
1248
1249         if (of_property_read_u32(node, "slaves", &prop)) {
1250                 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1251                 return -EINVAL;
1252         }
1253         data->slaves = prop;
1254
1255         if (of_property_read_u32(node, "active_slave", &prop)) {
1256                 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1257                 return -EINVAL;
1258         }
1259         data->active_slave = prop;
1260
1261         data->slave_data = devm_kcalloc(&pdev->dev,
1262                                         data->slaves,
1263                                         sizeof(struct cpsw_slave_data),
1264                                         GFP_KERNEL);
1265         if (!data->slave_data)
1266                 return -ENOMEM;
1267
1268         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1269                 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1270                 return -EINVAL;
1271         }
1272         data->channels = prop;
1273
1274         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1275                 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1276                 return -EINVAL;
1277         }
1278         data->bd_ram_size = prop;
1279
1280         if (of_property_read_u32(node, "mac_control", &prop)) {
1281                 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1282                 return -EINVAL;
1283         }
1284         data->mac_control = prop;
1285
1286         if (of_property_read_bool(node, "dual_emac"))
1287                 data->dual_emac = true;
1288
1289         /*
1290          * Populate all the child nodes here...
1291          */
1292         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1293         /* We do not want to force this, as in some cases may not have child */
1294         if (ret)
1295                 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1296
1297         for_each_available_child_of_node(node, slave_node) {
1298                 struct cpsw_slave_data *slave_data = data->slave_data + i;
1299                 int lenp;
1300                 const __be32 *parp;
1301
1302                 /* This is no slave child node, continue */
1303                 if (!of_node_name_eq(slave_node, "slave"))
1304                         continue;
1305
1306                 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1307                                                     NULL);
1308                 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1309                     IS_ERR(slave_data->ifphy)) {
1310                         ret = PTR_ERR(slave_data->ifphy);
1311                         dev_err(&pdev->dev,
1312                                 "%d: Error retrieving port phy: %d\n", i, ret);
1313                         goto err_node_put;
1314                 }
1315
1316                 slave_data->slave_node = slave_node;
1317                 slave_data->phy_node = of_parse_phandle(slave_node,
1318                                                         "phy-handle", 0);
1319                 parp = of_get_property(slave_node, "phy_id", &lenp);
1320                 if (slave_data->phy_node) {
1321                         dev_dbg(&pdev->dev,
1322                                 "slave[%d] using phy-handle=\"%pOF\"\n",
1323                                 i, slave_data->phy_node);
1324                 } else if (of_phy_is_fixed_link(slave_node)) {
1325                         /* In the case of a fixed PHY, the DT node associated
1326                          * to the PHY is the Ethernet MAC DT node.
1327                          */
1328                         ret = of_phy_register_fixed_link(slave_node);
1329                         if (ret) {
1330                                 if (ret != -EPROBE_DEFER)
1331                                         dev_err(&pdev->dev, "failed to register fixed-link phy: %d\n", ret);
1332                                 goto err_node_put;
1333                         }
1334                         slave_data->phy_node = of_node_get(slave_node);
1335                 } else if (parp) {
1336                         u32 phyid;
1337                         struct device_node *mdio_node;
1338                         struct platform_device *mdio;
1339
1340                         if (lenp != (sizeof(__be32) * 2)) {
1341                                 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1342                                 goto no_phy_slave;
1343                         }
1344                         mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1345                         phyid = be32_to_cpup(parp+1);
1346                         mdio = of_find_device_by_node(mdio_node);
1347                         of_node_put(mdio_node);
1348                         if (!mdio) {
1349                                 dev_err(&pdev->dev, "Missing mdio platform device\n");
1350                                 ret = -EINVAL;
1351                                 goto err_node_put;
1352                         }
1353                         snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1354                                  PHY_ID_FMT, mdio->name, phyid);
1355                         put_device(&mdio->dev);
1356                 } else {
1357                         dev_err(&pdev->dev,
1358                                 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1359                                 i);
1360                         goto no_phy_slave;
1361                 }
1362                 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1363                 if (ret) {
1364                         dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1365                                 i);
1366                         goto err_node_put;
1367                 }
1368
1369 no_phy_slave:
1370                 ret = of_get_mac_address(slave_node, slave_data->mac_addr);
1371                 if (ret) {
1372                         ret = ti_cm_get_macid(&pdev->dev, i,
1373                                               slave_data->mac_addr);
1374                         if (ret)
1375                                 goto err_node_put;
1376                 }
1377                 if (data->dual_emac) {
1378                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1379                                                  &prop)) {
1380                                 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1381                                 slave_data->dual_emac_res_vlan = i+1;
1382                                 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1383                                         slave_data->dual_emac_res_vlan, i);
1384                         } else {
1385                                 slave_data->dual_emac_res_vlan = prop;
1386                         }
1387                 }
1388
1389                 i++;
1390                 if (i == data->slaves) {
1391                         ret = 0;
1392                         goto err_node_put;
1393                 }
1394         }
1395
1396         return 0;
1397
1398 err_node_put:
1399         of_node_put(slave_node);
1400         return ret;
1401 }
1402
1403 static void cpsw_remove_dt(struct platform_device *pdev)
1404 {
1405         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1406         struct cpsw_platform_data *data = &cpsw->data;
1407         struct device_node *node = pdev->dev.of_node;
1408         struct device_node *slave_node;
1409         int i = 0;
1410
1411         for_each_available_child_of_node(node, slave_node) {
1412                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1413
1414                 if (!of_node_name_eq(slave_node, "slave"))
1415                         continue;
1416
1417                 if (of_phy_is_fixed_link(slave_node))
1418                         of_phy_deregister_fixed_link(slave_node);
1419
1420                 of_node_put(slave_data->phy_node);
1421
1422                 i++;
1423                 if (i == data->slaves) {
1424                         of_node_put(slave_node);
1425                         break;
1426                 }
1427         }
1428
1429         of_platform_depopulate(&pdev->dev);
1430 }
1431
1432 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1433 {
1434         struct cpsw_common              *cpsw = priv->cpsw;
1435         struct cpsw_platform_data       *data = &cpsw->data;
1436         struct net_device               *ndev;
1437         struct cpsw_priv                *priv_sl2;
1438         int ret = 0;
1439
1440         ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1441                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1442         if (!ndev) {
1443                 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1444                 return -ENOMEM;
1445         }
1446
1447         priv_sl2 = netdev_priv(ndev);
1448         priv_sl2->cpsw = cpsw;
1449         priv_sl2->ndev = ndev;
1450         priv_sl2->dev  = &ndev->dev;
1451         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1452
1453         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1454                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1455                         ETH_ALEN);
1456                 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1457                          priv_sl2->mac_addr);
1458         } else {
1459                 eth_random_addr(priv_sl2->mac_addr);
1460                 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1461                          priv_sl2->mac_addr);
1462         }
1463         memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1464
1465         priv_sl2->emac_port = 1;
1466         cpsw->slaves[1].ndev = ndev;
1467         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1468
1469         ndev->netdev_ops = &cpsw_netdev_ops;
1470         ndev->ethtool_ops = &cpsw_ethtool_ops;
1471
1472         /* register the network device */
1473         SET_NETDEV_DEV(ndev, cpsw->dev);
1474         ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1475         ret = register_netdev(ndev);
1476         if (ret)
1477                 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1478
1479         return ret;
1480 }
1481
1482 static const struct of_device_id cpsw_of_mtable[] = {
1483         { .compatible = "ti,cpsw"},
1484         { .compatible = "ti,am335x-cpsw"},
1485         { .compatible = "ti,am4372-cpsw"},
1486         { .compatible = "ti,dra7-cpsw"},
1487         { /* sentinel */ },
1488 };
1489 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1490
1491 static const struct soc_device_attribute cpsw_soc_devices[] = {
1492         { .family = "AM33xx", .revision = "ES1.0"},
1493         { /* sentinel */ }
1494 };
1495
1496 static int cpsw_probe(struct platform_device *pdev)
1497 {
1498         struct device                   *dev = &pdev->dev;
1499         struct clk                      *clk;
1500         struct cpsw_platform_data       *data;
1501         struct net_device               *ndev;
1502         struct cpsw_priv                *priv;
1503         void __iomem                    *ss_regs;
1504         struct resource                 *ss_res;
1505         struct gpio_descs               *mode;
1506         const struct soc_device_attribute *soc;
1507         struct cpsw_common              *cpsw;
1508         int ret = 0, ch;
1509         int irq;
1510
1511         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1512         if (!cpsw)
1513                 return -ENOMEM;
1514
1515         platform_set_drvdata(pdev, cpsw);
1516         cpsw_slave_index = cpsw_slave_index_priv;
1517
1518         cpsw->dev = dev;
1519
1520         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1521         if (IS_ERR(mode)) {
1522                 ret = PTR_ERR(mode);
1523                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1524                 return ret;
1525         }
1526
1527         clk = devm_clk_get(dev, "fck");
1528         if (IS_ERR(clk)) {
1529                 ret = PTR_ERR(clk);
1530                 dev_err(dev, "fck is not found %d\n", ret);
1531                 return ret;
1532         }
1533         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1534
1535         ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1536         if (IS_ERR(ss_regs))
1537                 return PTR_ERR(ss_regs);
1538         cpsw->regs = ss_regs;
1539
1540         cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1541         if (IS_ERR(cpsw->wr_regs))
1542                 return PTR_ERR(cpsw->wr_regs);
1543
1544         /* RX IRQ */
1545         irq = platform_get_irq(pdev, 1);
1546         if (irq < 0)
1547                 return irq;
1548         cpsw->irqs_table[0] = irq;
1549
1550         /* TX IRQ */
1551         irq = platform_get_irq(pdev, 2);
1552         if (irq < 0)
1553                 return irq;
1554         cpsw->irqs_table[1] = irq;
1555
1556         /* get misc irq*/
1557         irq = platform_get_irq(pdev, 3);
1558         if (irq <= 0)
1559                 return irq;
1560         cpsw->misc_irq = irq;
1561
1562         /*
1563          * This may be required here for child devices.
1564          */
1565         pm_runtime_enable(dev);
1566
1567         /* Need to enable clocks with runtime PM api to access module
1568          * registers
1569          */
1570         ret = pm_runtime_get_sync(dev);
1571         if (ret < 0) {
1572                 pm_runtime_put_noidle(dev);
1573                 goto clean_runtime_disable_ret;
1574         }
1575
1576         ret = cpsw_probe_dt(&cpsw->data, pdev);
1577         if (ret)
1578                 goto clean_dt_ret;
1579
1580         soc = soc_device_match(cpsw_soc_devices);
1581         if (soc)
1582                 cpsw->quirk_irq = true;
1583
1584         data = &cpsw->data;
1585         cpsw->slaves = devm_kcalloc(dev,
1586                                     data->slaves, sizeof(struct cpsw_slave),
1587                                     GFP_KERNEL);
1588         if (!cpsw->slaves) {
1589                 ret = -ENOMEM;
1590                 goto clean_dt_ret;
1591         }
1592
1593         cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1594         cpsw->descs_pool_size = descs_pool_size;
1595
1596         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1597                                ss_res->start + CPSW2_BD_OFFSET,
1598                                descs_pool_size);
1599         if (ret)
1600                 goto clean_dt_ret;
1601
1602         ch = cpsw->quirk_irq ? 0 : 7;
1603         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1604         if (IS_ERR(cpsw->txv[0].ch)) {
1605                 dev_err(dev, "error initializing tx dma channel\n");
1606                 ret = PTR_ERR(cpsw->txv[0].ch);
1607                 goto clean_cpts;
1608         }
1609
1610         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1611         if (IS_ERR(cpsw->rxv[0].ch)) {
1612                 dev_err(dev, "error initializing rx dma channel\n");
1613                 ret = PTR_ERR(cpsw->rxv[0].ch);
1614                 goto clean_cpts;
1615         }
1616         cpsw_split_res(cpsw);
1617
1618         /* setup netdev */
1619         ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1620                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1621         if (!ndev) {
1622                 dev_err(dev, "error allocating net_device\n");
1623                 ret = -ENOMEM;
1624                 goto clean_cpts;
1625         }
1626
1627         priv = netdev_priv(ndev);
1628         priv->cpsw = cpsw;
1629         priv->ndev = ndev;
1630         priv->dev  = dev;
1631         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1632         priv->emac_port = 0;
1633
1634         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1635                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1636                 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1637         } else {
1638                 eth_random_addr(priv->mac_addr);
1639                 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1640         }
1641
1642         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1643
1644         cpsw->slaves[0].ndev = ndev;
1645
1646         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1647
1648         ndev->netdev_ops = &cpsw_netdev_ops;
1649         ndev->ethtool_ops = &cpsw_ethtool_ops;
1650         netif_napi_add(ndev, &cpsw->napi_rx,
1651                        cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll,
1652                        CPSW_POLL_WEIGHT);
1653         netif_tx_napi_add(ndev, &cpsw->napi_tx,
1654                           cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll,
1655                           CPSW_POLL_WEIGHT);
1656
1657         /* register the network device */
1658         SET_NETDEV_DEV(ndev, dev);
1659         ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1660         ret = register_netdev(ndev);
1661         if (ret) {
1662                 dev_err(dev, "error registering net device\n");
1663                 ret = -ENODEV;
1664                 goto clean_cpts;
1665         }
1666
1667         if (cpsw->data.dual_emac) {
1668                 ret = cpsw_probe_dual_emac(priv);
1669                 if (ret) {
1670                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1671                         goto clean_unregister_netdev_ret;
1672                 }
1673         }
1674
1675         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1676          * MISC IRQs which are always kept disabled with this driver so
1677          * we will not request them.
1678          *
1679          * If anyone wants to implement support for those, make sure to
1680          * first request and append them to irqs_table array.
1681          */
1682         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1683                                0, dev_name(dev), cpsw);
1684         if (ret < 0) {
1685                 dev_err(dev, "error attaching irq (%d)\n", ret);
1686                 goto clean_unregister_netdev_ret;
1687         }
1688
1689
1690         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1691                                0, dev_name(&pdev->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         if (!cpsw->cpts)
1698                 goto skip_cpts;
1699
1700         ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1701                                0, dev_name(&pdev->dev), cpsw);
1702         if (ret < 0) {
1703                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1704                 goto clean_unregister_netdev_ret;
1705         }
1706
1707         /* Enable misc CPTS evnt_pend IRQ */
1708         cpts_set_irqpoll(cpsw->cpts, false);
1709
1710 skip_cpts:
1711         cpsw_notice(priv, probe,
1712                     "initialized device (regs %pa, irq %d, pool size %d)\n",
1713                     &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1714
1715         pm_runtime_put(&pdev->dev);
1716
1717         return 0;
1718
1719 clean_unregister_netdev_ret:
1720         unregister_netdev(ndev);
1721 clean_cpts:
1722         cpts_release(cpsw->cpts);
1723         cpdma_ctlr_destroy(cpsw->dma);
1724 clean_dt_ret:
1725         cpsw_remove_dt(pdev);
1726         pm_runtime_put_sync(&pdev->dev);
1727 clean_runtime_disable_ret:
1728         pm_runtime_disable(&pdev->dev);
1729         return ret;
1730 }
1731
1732 static int cpsw_remove(struct platform_device *pdev)
1733 {
1734         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1735         int i, ret;
1736
1737         ret = pm_runtime_get_sync(&pdev->dev);
1738         if (ret < 0) {
1739                 pm_runtime_put_noidle(&pdev->dev);
1740                 return ret;
1741         }
1742
1743         for (i = 0; i < cpsw->data.slaves; i++)
1744                 if (cpsw->slaves[i].ndev)
1745                         unregister_netdev(cpsw->slaves[i].ndev);
1746
1747         cpts_release(cpsw->cpts);
1748         cpdma_ctlr_destroy(cpsw->dma);
1749         cpsw_remove_dt(pdev);
1750         pm_runtime_put_sync(&pdev->dev);
1751         pm_runtime_disable(&pdev->dev);
1752         return 0;
1753 }
1754
1755 #ifdef CONFIG_PM_SLEEP
1756 static int cpsw_suspend(struct device *dev)
1757 {
1758         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1759         int i;
1760
1761         rtnl_lock();
1762
1763         for (i = 0; i < cpsw->data.slaves; i++)
1764                 if (cpsw->slaves[i].ndev)
1765                         if (netif_running(cpsw->slaves[i].ndev))
1766                                 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1767
1768         rtnl_unlock();
1769
1770         /* Select sleep pin state */
1771         pinctrl_pm_select_sleep_state(dev);
1772
1773         return 0;
1774 }
1775
1776 static int cpsw_resume(struct device *dev)
1777 {
1778         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1779         int i;
1780
1781         /* Select default pin state */
1782         pinctrl_pm_select_default_state(dev);
1783
1784         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1785         rtnl_lock();
1786
1787         for (i = 0; i < cpsw->data.slaves; i++)
1788                 if (cpsw->slaves[i].ndev)
1789                         if (netif_running(cpsw->slaves[i].ndev))
1790                                 cpsw_ndo_open(cpsw->slaves[i].ndev);
1791
1792         rtnl_unlock();
1793
1794         return 0;
1795 }
1796 #endif
1797
1798 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1799
1800 static struct platform_driver cpsw_driver = {
1801         .driver = {
1802                 .name    = "cpsw",
1803                 .pm      = &cpsw_pm_ops,
1804                 .of_match_table = cpsw_of_mtable,
1805         },
1806         .probe = cpsw_probe,
1807         .remove = cpsw_remove,
1808 };
1809
1810 module_platform_driver(cpsw_driver);
1811
1812 MODULE_LICENSE("GPL");
1813 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1814 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1815 MODULE_DESCRIPTION("TI CPSW Ethernet driver");