drivers/net/ethernet/ti/cpsw.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Texas Instruments Ethernet Switch Driver
   4  *
   5  * Copyright (C) 2012 Texas Instruments
   6  *
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/io.h>
  11 #include <linux/clk.h>
  12 #include <linux/timer.h>
  13 #include <linux/module.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/irqreturn.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/net_tstamp.h>
  21 #include <linux/phy.h>
  22 #include <linux/phy/phy.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/delay.h>
  25 #include <linux/pm_runtime.h>
  26 #include <linux/gpio/consumer.h>
  27 #include <linux/of.h>
  28 #include <linux/of_mdio.h>
  29 #include <linux/of_net.h>
  30 #include <linux/of_device.h>
  31 #include <linux/if_vlan.h>
  32 #include <linux/kmemleak.h>
  33 #include <linux/sys_soc.h>
  34 #include <net/page_pool.h>
  35 #include <linux/bpf.h>
  36 #include <linux/bpf_trace.h>
  37
  38 #include <linux/pinctrl/consumer.h>
  39 #include <net/pkt_cls.h>
  40
  41 #include "cpsw.h"
  42 #include "cpsw_ale.h"
  43 #include "cpsw_priv.h"
  44 #include "cpsw_sl.h"
  45 #include "cpts.h"
  46 #include "davinci_cpdma.h"
  47
  48 #include <net/pkt_sched.h>
  49
  50 static int debug_level;
  51 module_param(debug_level, int, 0);
  52 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
  53
  54 static int ale_ageout = 10;
  55 module_param(ale_ageout, int, 0);
  56 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
  57
  58 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
  59 module_param(rx_packet_max, int, 0);
  60 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
  61
  62 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
  63 module_param(descs_pool_size, int, 0444);
  64 MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool");
  65
  66 #define for_each_slave(priv, func, arg...)                              \
  67         do {                                                            \
  68                 struct cpsw_slave *slave;                               \
  69                 struct cpsw_common *cpsw = (priv)->cpsw;                \
  70                 int n;                                                  \
  71                 if (cpsw->data.dual_emac)                               \
  72                         (func)((cpsw)->slaves + priv->emac_port, ##arg);\
  73                 else                                                    \
  74                         for (n = cpsw->data.slaves,                     \
  75                                         slave = cpsw->slaves;           \
  76                                         n; n--)                         \
  77                                 (func)(slave++, ##arg);                 \
  78         } while (0)
  79
  80 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
  81                                  struct cpsw_priv *priv)
  82 {
  83         return cpsw->data.dual_emac ? priv->emac_port : cpsw->data.active_slave;
  84 }
  85
  86 static int cpsw_get_slave_port(u32 slave_num)
  87 {
  88         return slave_num + 1;
  89 }
  90
  91 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
  92                                     __be16 proto, u16 vid);
  93
  94 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
  95 {
  96         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
  97         struct cpsw_ale *ale = cpsw->ale;
  98         int i;
  99
 100         if (cpsw->data.dual_emac) {
 101                 bool flag = false;
 102
 103                 /* Enabling promiscuous mode for one interface will be
 104                  * common for both the interface as the interface shares
 105                  * the same hardware resource.
 106                  */
 107                 for (i = 0; i < cpsw->data.slaves; i++)
 108                         if (cpsw->slaves[i].ndev->flags & IFF_PROMISC)
 109                                 flag = true;
 110
 111                 if (!enable && flag) {
 112                         enable = true;
 113                         dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
 114                 }
 115
 116                 if (enable) {
 117                         /* Enable Bypass */
 118                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
 119
 120                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 121                 } else {
 122                         /* Disable Bypass */
 123                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
 124                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 125                 }
 126         } else {
 127                 if (enable) {
 128                         unsigned long timeout = jiffies + HZ;
 129
 130                         /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
 131                         for (i = 0; i <= cpsw->data.slaves; i++) {
 132                                 cpsw_ale_control_set(ale, i,
 133                                                      ALE_PORT_NOLEARN, 1);
 134                                 cpsw_ale_control_set(ale, i,
 135                                                      ALE_PORT_NO_SA_UPDATE, 1);
 136                         }
 137
 138                         /* Clear All Untouched entries */
 139                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 140                         do {
 141                                 cpu_relax();
 142                                 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
 143                                         break;
 144                         } while (time_after(timeout, jiffies));
 145                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 146
 147                         /* Clear all mcast from ALE */
 148                         cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
 149                         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, NULL);
 150
 151                         /* Flood All Unicast Packets to Host port */
 152                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
 153                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 154                 } else {
 155                         /* Don't Flood All Unicast Packets to Host port */
 156                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
 157
 158                         /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
 159                         for (i = 0; i <= cpsw->data.slaves; i++) {
 160                                 cpsw_ale_control_set(ale, i,
 161                                                      ALE_PORT_NOLEARN, 0);
 162                                 cpsw_ale_control_set(ale, i,
 163                                                      ALE_PORT_NO_SA_UPDATE, 0);
 164                         }
 165                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 166                 }
 167         }
 168 }
 169
 170 /**
 171  * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
 172  * if it's not deleted
 173  * @ndev: device to sync
 174  * @addr: address to be added or deleted
 175  * @vid: vlan id, if vid < 0 set/unset address for real device
 176  * @add: add address if the flag is set or remove otherwise
 177  */
 178 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
 179                        int vid, int add)
 180 {
 181         struct cpsw_priv *priv = netdev_priv(ndev);
 182         struct cpsw_common *cpsw = priv->cpsw;
 183         int mask, flags, ret;
 184
 185         if (vid < 0) {
 186                 if (cpsw->data.dual_emac)
 187                         vid = cpsw->slaves[priv->emac_port].port_vlan;
 188                 else
 189                         vid = 0;
 190         }
 191
 192         mask = cpsw->data.dual_emac ? ALE_PORT_HOST : ALE_ALL_PORTS;
 193         flags = vid ? ALE_VLAN : 0;
 194
 195         if (add)
 196                 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
 197         else
 198                 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
 199
 200         return ret;
 201 }
 202
 203 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 204 {
 205         struct addr_sync_ctx *sync_ctx = ctx;
 206         struct netdev_hw_addr *ha;
 207         int found = 0, ret = 0;
 208
 209         if (!vdev || !(vdev->flags & IFF_UP))
 210                 return 0;
 211
 212         /* vlan address is relevant if its sync_cnt != 0 */
 213         netdev_for_each_mc_addr(ha, vdev) {
 214                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 215                         found = ha->sync_cnt;
 216                         break;
 217                 }
 218         }
 219
 220         if (found)
 221                 sync_ctx->consumed++;
 222
 223         if (sync_ctx->flush) {
 224                 if (!found)
 225                         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 226                 return 0;
 227         }
 228
 229         if (found)
 230                 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
 231
 232         return ret;
 233 }
 234
 235 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 236 {
 237         struct addr_sync_ctx sync_ctx;
 238         int ret;
 239
 240         sync_ctx.consumed = 0;
 241         sync_ctx.addr = addr;
 242         sync_ctx.ndev = ndev;
 243         sync_ctx.flush = 0;
 244
 245         ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 246         if (sync_ctx.consumed < num && !ret)
 247                 ret = cpsw_set_mc(ndev, addr, -1, 1);
 248
 249         return ret;
 250 }
 251
 252 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 253 {
 254         struct addr_sync_ctx sync_ctx;
 255
 256         sync_ctx.consumed = 0;
 257         sync_ctx.addr = addr;
 258         sync_ctx.ndev = ndev;
 259         sync_ctx.flush = 1;
 260
 261         vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 262         if (sync_ctx.consumed == num)
 263                 cpsw_set_mc(ndev, addr, -1, 0);
 264
 265         return 0;
 266 }
 267
 268 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 269 {
 270         struct addr_sync_ctx *sync_ctx = ctx;
 271         struct netdev_hw_addr *ha;
 272         int found = 0;
 273
 274         if (!vdev || !(vdev->flags & IFF_UP))
 275                 return 0;
 276
 277         /* vlan address is relevant if its sync_cnt != 0 */
 278         netdev_for_each_mc_addr(ha, vdev) {
 279                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 280                         found = ha->sync_cnt;
 281                         break;
 282                 }
 283         }
 284
 285         if (!found)
 286                 return 0;
 287
 288         sync_ctx->consumed++;
 289         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 290         return 0;
 291 }
 292
 293 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
 294 {
 295         struct addr_sync_ctx sync_ctx;
 296
 297         sync_ctx.addr = addr;
 298         sync_ctx.ndev = ndev;
 299         sync_ctx.consumed = 0;
 300
 301         vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
 302         if (sync_ctx.consumed < num)
 303                 cpsw_set_mc(ndev, addr, -1, 0);
 304
 305         return 0;
 306 }
 307
 308 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 309 {
 310         struct cpsw_priv *priv = netdev_priv(ndev);
 311         struct cpsw_common *cpsw = priv->cpsw;
 312         int slave_port = -1;
 313
 314         if (cpsw->data.dual_emac)
 315                 slave_port = priv->emac_port + 1;
 316
 317         if (ndev->flags & IFF_PROMISC) {
 318                 /* Enable promiscuous mode */
 319                 cpsw_set_promiscious(ndev, true);
 320                 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
 321                 return;
 322         } else {
 323                 /* Disable promiscuous mode */
 324                 cpsw_set_promiscious(ndev, false);
 325         }
 326
 327         /* Restore allmulti on vlans if necessary */
 328         cpsw_ale_set_allmulti(cpsw->ale,
 329                               ndev->flags & IFF_ALLMULTI, slave_port);
 330
 331         /* add/remove mcast address either for real netdev or for vlan */
 332         __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
 333                                cpsw_del_mc_addr);
 334 }
 335
 336 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
 337 {
 338         len += CPSW_HEADROOM;
 339         len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 340
 341         return SKB_DATA_ALIGN(len);
 342 }
 343
 344 static void cpsw_rx_handler(void *token, int len, int status)
 345 {
 346         struct page             *new_page, *page = token;
 347         void                    *pa = page_address(page);
 348         struct cpsw_meta_xdp    *xmeta = pa + CPSW_XMETA_OFFSET;
 349         struct cpsw_common      *cpsw = ndev_to_cpsw(xmeta->ndev);
 350         int                     pkt_size = cpsw->rx_packet_max;
 351         int                     ret = 0, port, ch = xmeta->ch;
 352         int                     headroom = CPSW_HEADROOM;
 353         struct net_device       *ndev = xmeta->ndev;
 354         struct cpsw_priv        *priv;
 355         struct page_pool        *pool;
 356         struct sk_buff          *skb;
 357         struct xdp_buff         xdp;
 358         dma_addr_t              dma;
 359
 360         if (cpsw->data.dual_emac && status >= 0) {
 361                 port = CPDMA_RX_SOURCE_PORT(status);
 362                 if (port)
 363                         ndev = cpsw->slaves[--port].ndev;
 364         }
 365
 366         priv = netdev_priv(ndev);
 367         pool = cpsw->page_pool[ch];
 368         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
 369                 /* In dual emac mode check for all interfaces */
 370                 if (cpsw->data.dual_emac && cpsw->usage_count &&
 371                     (status >= 0)) {
 372                         /* The packet received is for the interface which
 373                          * is already down and the other interface is up
 374                          * and running, instead of freeing which results
 375                          * in reducing of the number of rx descriptor in
 376                          * DMA engine, requeue page back to cpdma.
 377                          */
 378                         new_page = page;
 379                         goto requeue;
 380                 }
 381
 382                 /* the interface is going down, pages are purged */
 383                 page_pool_recycle_direct(pool, page);
 384                 return;
 385         }
 386
 387         new_page = page_pool_dev_alloc_pages(pool);
 388         if (unlikely(!new_page)) {
 389                 new_page = page;
 390                 ndev->stats.rx_dropped++;
 391                 goto requeue;
 392         }
 393
 394         if (priv->xdp_prog) {
 395                 if (status & CPDMA_RX_VLAN_ENCAP) {
 396                         xdp.data = pa + CPSW_HEADROOM +
 397                                    CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 398                         xdp.data_end = xdp.data + len -
 399                                        CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 400                 } else {
 401                         xdp.data = pa + CPSW_HEADROOM;
 402                         xdp.data_end = xdp.data + len;
 403                 }
 404
 405                 xdp_set_data_meta_invalid(&xdp);
 406
 407                 xdp.data_hard_start = pa;
 408                 xdp.rxq = &priv->xdp_rxq[ch];
 409                 xdp.frame_sz = PAGE_SIZE;
 410
 411                 port = priv->emac_port + cpsw->data.dual_emac;
 412                 ret = cpsw_run_xdp(priv, ch, &xdp, page, port);
 413                 if (ret != CPSW_XDP_PASS)
 414                         goto requeue;
 415
 416                 /* XDP prog might have changed packet data and boundaries */
 417                 len = xdp.data_end - xdp.data;
 418                 headroom = xdp.data - xdp.data_hard_start;
 419
 420                 /* XDP prog can modify vlan tag, so can't use encap header */
 421                 status &= ~CPDMA_RX_VLAN_ENCAP;
 422         }
 423
 424         /* pass skb to netstack if no XDP prog or returned XDP_PASS */
 425         skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 426         if (!skb) {
 427                 ndev->stats.rx_dropped++;
 428                 page_pool_recycle_direct(pool, page);
 429                 goto requeue;
 430         }
 431
 432         skb_reserve(skb, headroom);
 433         skb_put(skb, len);
 434         skb->dev = ndev;
 435         if (status & CPDMA_RX_VLAN_ENCAP)
 436                 cpsw_rx_vlan_encap(skb);
 437         if (priv->rx_ts_enabled)
 438                 cpts_rx_timestamp(cpsw->cpts, skb);
 439         skb->protocol = eth_type_trans(skb, ndev);
 440
 441         /* unmap page as no netstack skb page recycling */
 442         page_pool_release_page(pool, page);
 443         netif_receive_skb(skb);
 444
 445         ndev->stats.rx_bytes += len;
 446         ndev->stats.rx_packets++;
 447
 448 requeue:
 449         xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 450         xmeta->ndev = ndev;
 451         xmeta->ch = ch;
 452
 453         dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
 454         ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 455                                        pkt_size, 0);
 456         if (ret < 0) {
 457                 WARN_ON(ret == -ENOMEM);
 458                 page_pool_recycle_direct(pool, new_page);
 459         }
 460 }
 461
 462 static void _cpsw_adjust_link(struct cpsw_slave *slave,
 463                               struct cpsw_priv *priv, bool *link)
 464 {
 465         struct phy_device       *phy = slave->phy;
 466         u32                     mac_control = 0;
 467         u32                     slave_port;
 468         struct cpsw_common *cpsw = priv->cpsw;
 469
 470         if (!phy)
 471                 return;
 472
 473         slave_port = cpsw_get_slave_port(slave->slave_num);
 474
 475         if (phy->link) {
 476                 mac_control = CPSW_SL_CTL_GMII_EN;
 477
 478                 if (phy->speed == 1000)
 479                         mac_control |= CPSW_SL_CTL_GIG;
 480                 if (phy->duplex)
 481                         mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 482
 483                 /* set speed_in input in case RMII mode is used in 100Mbps */
 484                 if (phy->speed == 100)
 485                         mac_control |= CPSW_SL_CTL_IFCTL_A;
 486                 /* in band mode only works in 10Mbps RGMII mode */
 487                 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 488                         mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 489
 490                 if (priv->rx_pause)
 491                         mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 492
 493                 if (priv->tx_pause)
 494                         mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 495
 496                 if (mac_control != slave->mac_control)
 497                         cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 498
 499                 /* enable forwarding */
 500                 cpsw_ale_control_set(cpsw->ale, slave_port,
 501                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 502
 503                 *link = true;
 504
 505                 if (priv->shp_cfg_speed &&
 506                     priv->shp_cfg_speed != slave->phy->speed &&
 507                     !cpsw_shp_is_off(priv))
 508                         dev_warn(priv->dev,
 509                                  "Speed was changed, CBS shaper speeds are changed!");
 510         } else {
 511                 mac_control = 0;
 512                 /* disable forwarding */
 513                 cpsw_ale_control_set(cpsw->ale, slave_port,
 514                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 515
 516                 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 517
 518                 cpsw_sl_ctl_reset(slave->mac_sl);
 519         }
 520
 521         if (mac_control != slave->mac_control)
 522                 phy_print_status(phy);
 523
 524         slave->mac_control = mac_control;
 525 }
 526
 527 static void cpsw_adjust_link(struct net_device *ndev)
 528 {
 529         struct cpsw_priv        *priv = netdev_priv(ndev);
 530         struct cpsw_common      *cpsw = priv->cpsw;
 531         bool                    link = false;
 532
 533         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 534
 535         if (link) {
 536                 if (cpsw_need_resplit(cpsw))
 537                         cpsw_split_res(cpsw);
 538
 539                 netif_carrier_on(ndev);
 540                 if (netif_running(ndev))
 541                         netif_tx_wake_all_queues(ndev);
 542         } else {
 543                 netif_carrier_off(ndev);
 544                 netif_tx_stop_all_queues(ndev);
 545         }
 546 }
 547
 548 static inline void cpsw_add_dual_emac_def_ale_entries(
 549                 struct cpsw_priv *priv, struct cpsw_slave *slave,
 550                 u32 slave_port)
 551 {
 552         struct cpsw_common *cpsw = priv->cpsw;
 553         u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
 554
 555         if (cpsw->version == CPSW_VERSION_1)
 556                 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
 557         else
 558                 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
 559         cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 560                           port_mask, port_mask, 0);
 561         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 562                            ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
 563         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 564                            HOST_PORT_NUM, ALE_VLAN |
 565                            ALE_SECURE, slave->port_vlan);
 566         cpsw_ale_control_set(cpsw->ale, slave_port,
 567                              ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 568 }
 569
 570 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 571 {
 572         u32 slave_port;
 573         struct phy_device *phy;
 574         struct cpsw_common *cpsw = priv->cpsw;
 575
 576         cpsw_sl_reset(slave->mac_sl, 100);
 577         cpsw_sl_ctl_reset(slave->mac_sl);
 578
 579         /* setup priority mapping */
 580         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 581                           RX_PRIORITY_MAPPING);
 582
 583         switch (cpsw->version) {
 584         case CPSW_VERSION_1:
 585                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 586                 /* Increase RX FIFO size to 5 for supporting fullduplex
 587                  * flow control mode
 588                  */
 589                 slave_write(slave,
 590                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 591                             CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 592                 break;
 593         case CPSW_VERSION_2:
 594         case CPSW_VERSION_3:
 595         case CPSW_VERSION_4:
 596                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 597                 /* Increase RX FIFO size to 5 for supporting fullduplex
 598                  * flow control mode
 599                  */
 600                 slave_write(slave,
 601                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 602                             CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 603                 break;
 604         }
 605
 606         /* setup max packet size, and mac address */
 607         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 608                           cpsw->rx_packet_max);
 609         cpsw_set_slave_mac(slave, priv);
 610
 611         slave->mac_control = 0; /* no link yet */
 612
 613         slave_port = cpsw_get_slave_port(slave->slave_num);
 614
 615         if (cpsw->data.dual_emac)
 616                 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
 617         else
 618                 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 619                                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
 620
 621         if (slave->data->phy_node) {
 622                 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 623                                  &cpsw_adjust_link, 0, slave->data->phy_if);
 624                 if (!phy) {
 625                         dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 626                                 slave->data->phy_node,
 627                                 slave->slave_num);
 628                         return;
 629                 }
 630         } else {
 631                 phy = phy_connect(priv->ndev, slave->data->phy_id,
 632                                  &cpsw_adjust_link, slave->data->phy_if);
 633                 if (IS_ERR(phy)) {
 634                         dev_err(priv->dev,
 635                                 "phy \"%s\" not found on slave %d, err %ld\n",
 636                                 slave->data->phy_id, slave->slave_num,
 637                                 PTR_ERR(phy));
 638                         return;
 639                 }
 640         }
 641
 642         slave->phy = phy;
 643
 644         phy_attached_info(slave->phy);
 645
 646         phy_start(slave->phy);
 647
 648         /* Configure GMII_SEL register */
 649         if (!IS_ERR(slave->data->ifphy))
 650                 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 651                                  slave->data->phy_if);
 652         else
 653                 cpsw_phy_sel(cpsw->dev, slave->phy->interface,
 654                              slave->slave_num);
 655 }
 656
 657 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
 658 {
 659         struct cpsw_common *cpsw = priv->cpsw;
 660         const int vlan = cpsw->data.default_vlan;
 661         u32 reg;
 662         int i;
 663         int unreg_mcast_mask;
 664
 665         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 666                CPSW2_PORT_VLAN;
 667
 668         writel(vlan, &cpsw->host_port_regs->port_vlan);
 669
 670         for (i = 0; i < cpsw->data.slaves; i++)
 671                 slave_write(cpsw->slaves + i, vlan, reg);
 672
 673         if (priv->ndev->flags & IFF_ALLMULTI)
 674                 unreg_mcast_mask = ALE_ALL_PORTS;
 675         else
 676                 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
 677
 678         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 679                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 680                           unreg_mcast_mask);
 681 }
 682
 683 static void cpsw_init_host_port(struct cpsw_priv *priv)
 684 {
 685         u32 fifo_mode;
 686         u32 control_reg;
 687         struct cpsw_common *cpsw = priv->cpsw;
 688
 689         /* soft reset the controller and initialize ale */
 690         soft_reset("cpsw", &cpsw->regs->soft_reset);
 691         cpsw_ale_start(cpsw->ale);
 692
 693         /* switch to vlan unaware mode */
 694         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 695                              CPSW_ALE_VLAN_AWARE);
 696         control_reg = readl(&cpsw->regs->control);
 697         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 698         writel(control_reg, &cpsw->regs->control);
 699         fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
 700                      CPSW_FIFO_NORMAL_MODE;
 701         writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
 702
 703         /* setup host port priority mapping */
 704         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 705                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 706         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 707
 708         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 709                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 710
 711         if (!cpsw->data.dual_emac) {
 712                 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 713                                    0, 0);
 714                 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 715                                    ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
 716         }
 717 }
 718
 719 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
 720 {
 721         u32 slave_port;
 722
 723         slave_port = cpsw_get_slave_port(slave->slave_num);
 724
 725         if (!slave->phy)
 726                 return;
 727         phy_stop(slave->phy);
 728         phy_disconnect(slave->phy);
 729         slave->phy = NULL;
 730         cpsw_ale_control_set(cpsw->ale, slave_port,
 731                              ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 732         cpsw_sl_reset(slave->mac_sl, 100);
 733         cpsw_sl_ctl_reset(slave->mac_sl);
 734 }
 735
 736 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 737 {
 738         struct cpsw_priv *priv = arg;
 739
 740         if (!vdev)
 741                 return 0;
 742
 743         cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 744         return 0;
 745 }
 746
 747 /* restore resources after port reset */
 748 static void cpsw_restore(struct cpsw_priv *priv)
 749 {
 750         /* restore vlan configurations */
 751         vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 752
 753         /* restore MQPRIO offload */
 754         for_each_slave(priv, cpsw_mqprio_resume, priv);
 755
 756         /* restore CBS offload */
 757         for_each_slave(priv, cpsw_cbs_resume, priv);
 758 }
 759
 760 static int cpsw_ndo_open(struct net_device *ndev)
 761 {
 762         struct cpsw_priv *priv = netdev_priv(ndev);
 763         struct cpsw_common *cpsw = priv->cpsw;
 764         int ret;
 765         u32 reg;
 766
 767         ret = pm_runtime_get_sync(cpsw->dev);
 768         if (ret < 0) {
 769                 pm_runtime_put_noidle(cpsw->dev);
 770                 return ret;
 771         }
 772
 773         netif_carrier_off(ndev);
 774
 775         /* Notify the stack of the actual queue counts. */
 776         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 777         if (ret) {
 778                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 779                 goto err_cleanup;
 780         }
 781
 782         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 783         if (ret) {
 784                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 785                 goto err_cleanup;
 786         }
 787
 788         reg = cpsw->version;
 789
 790         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
 791                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
 792                  CPSW_RTL_VERSION(reg));
 793
 794         /* Initialize host and slave ports */
 795         if (!cpsw->usage_count)
 796                 cpsw_init_host_port(priv);
 797         for_each_slave(priv, cpsw_slave_open, priv);
 798
 799         /* Add default VLAN */
 800         if (!cpsw->data.dual_emac)
 801                 cpsw_add_default_vlan(priv);
 802         else
 803                 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
 804                                   ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 805
 806         /* initialize shared resources for every ndev */
 807         if (!cpsw->usage_count) {
 808                 /* disable priority elevation */
 809                 writel_relaxed(0, &cpsw->regs->ptype);
 810
 811                 /* enable statistics collection only on all ports */
 812                 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 813
 814                 /* Enable internal fifo flow control */
 815                 writel(0x7, &cpsw->regs->flow_control);
 816
 817                 napi_enable(&cpsw->napi_rx);
 818                 napi_enable(&cpsw->napi_tx);
 819
 820                 if (cpsw->tx_irq_disabled) {
 821                         cpsw->tx_irq_disabled = false;
 822                         enable_irq(cpsw->irqs_table[1]);
 823                 }
 824
 825                 if (cpsw->rx_irq_disabled) {
 826                         cpsw->rx_irq_disabled = false;
 827                         enable_irq(cpsw->irqs_table[0]);
 828                 }
 829
 830                 /* create rxqs for both infs in dual mac as they use same pool
 831                  * and must be destroyed together when no users.
 832                  */
 833                 ret = cpsw_create_xdp_rxqs(cpsw);
 834                 if (ret < 0)
 835                         goto err_cleanup;
 836
 837                 ret = cpsw_fill_rx_channels(priv);
 838                 if (ret < 0)
 839                         goto err_cleanup;
 840
 841                 if (cpsw->cpts) {
 842                         if (cpts_register(cpsw->cpts))
 843                                 dev_err(priv->dev, "error registering cpts device\n");
 844                         else
 845                                 writel(0x10, &cpsw->wr_regs->misc_en);
 846                 }
 847         }
 848
 849         cpsw_restore(priv);
 850
 851         /* Enable Interrupt pacing if configured */
 852         if (cpsw->coal_intvl != 0) {
 853                 struct ethtool_coalesce coal;
 854
 855                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 856                 cpsw_set_coalesce(ndev, &coal);
 857         }
 858
 859         cpdma_ctlr_start(cpsw->dma);
 860         cpsw_intr_enable(cpsw);
 861         cpsw->usage_count++;
 862
 863         return 0;
 864
 865 err_cleanup:
 866         if (!cpsw->usage_count) {
 867                 cpdma_ctlr_stop(cpsw->dma);
 868                 cpsw_destroy_xdp_rxqs(cpsw);
 869         }
 870
 871         for_each_slave(priv, cpsw_slave_stop, cpsw);
 872         pm_runtime_put_sync(cpsw->dev);
 873         netif_carrier_off(priv->ndev);
 874         return ret;
 875 }
 876
 877 static int cpsw_ndo_stop(struct net_device *ndev)
 878 {
 879         struct cpsw_priv *priv = netdev_priv(ndev);
 880         struct cpsw_common *cpsw = priv->cpsw;
 881
 882         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
 883         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 884         netif_tx_stop_all_queues(priv->ndev);
 885         netif_carrier_off(priv->ndev);
 886
 887         if (cpsw->usage_count <= 1) {
 888                 napi_disable(&cpsw->napi_rx);
 889                 napi_disable(&cpsw->napi_tx);
 890                 cpts_unregister(cpsw->cpts);
 891                 cpsw_intr_disable(cpsw);
 892                 cpdma_ctlr_stop(cpsw->dma);
 893                 cpsw_ale_stop(cpsw->ale);
 894                 cpsw_destroy_xdp_rxqs(cpsw);
 895         }
 896         for_each_slave(priv, cpsw_slave_stop, cpsw);
 897
 898         if (cpsw_need_resplit(cpsw))
 899                 cpsw_split_res(cpsw);
 900
 901         cpsw->usage_count--;
 902         pm_runtime_put_sync(cpsw->dev);
 903         return 0;
 904 }
 905
 906 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 907                                        struct net_device *ndev)
 908 {
 909         struct cpsw_priv *priv = netdev_priv(ndev);
 910         struct cpsw_common *cpsw = priv->cpsw;
 911         struct cpts *cpts = cpsw->cpts;
 912         struct netdev_queue *txq;
 913         struct cpdma_chan *txch;
 914         int ret, q_idx;
 915
 916         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 917                 cpsw_err(priv, tx_err, "packet pad failed\n");
 918                 ndev->stats.tx_dropped++;
 919                 return NET_XMIT_DROP;
 920         }
 921
 922         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 923             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 924                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 925
 926         q_idx = skb_get_queue_mapping(skb);
 927         if (q_idx >= cpsw->tx_ch_num)
 928                 q_idx = q_idx % cpsw->tx_ch_num;
 929
 930         txch = cpsw->txv[q_idx].ch;
 931         txq = netdev_get_tx_queue(ndev, q_idx);
 932         skb_tx_timestamp(skb);
 933         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 934                                 priv->emac_port + cpsw->data.dual_emac);
 935         if (unlikely(ret != 0)) {
 936                 cpsw_err(priv, tx_err, "desc submit failed\n");
 937                 goto fail;
 938         }
 939
 940         /* If there is no more tx desc left free then we need to
 941          * tell the kernel to stop sending us tx frames.
 942          */
 943         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 944                 netif_tx_stop_queue(txq);
 945
 946                 /* Barrier, so that stop_queue visible to other cpus */
 947                 smp_mb__after_atomic();
 948
 949                 if (cpdma_check_free_tx_desc(txch))
 950                         netif_tx_wake_queue(txq);
 951         }
 952
 953         return NETDEV_TX_OK;
 954 fail:
 955         ndev->stats.tx_dropped++;
 956         netif_tx_stop_queue(txq);
 957
 958         /* Barrier, so that stop_queue visible to other cpus */
 959         smp_mb__after_atomic();
 960
 961         if (cpdma_check_free_tx_desc(txch))
 962                 netif_tx_wake_queue(txq);
 963
 964         return NETDEV_TX_BUSY;
 965 }
 966
 967 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 968 {
 969         struct cpsw_priv *priv = netdev_priv(ndev);
 970         struct sockaddr *addr = (struct sockaddr *)p;
 971         struct cpsw_common *cpsw = priv->cpsw;
 972         int flags = 0;
 973         u16 vid = 0;
 974         int ret;
 975
 976         if (!is_valid_ether_addr(addr->sa_data))
 977                 return -EADDRNOTAVAIL;
 978
 979         ret = pm_runtime_get_sync(cpsw->dev);
 980         if (ret < 0) {
 981                 pm_runtime_put_noidle(cpsw->dev);
 982                 return ret;
 983         }
 984
 985         if (cpsw->data.dual_emac) {
 986                 vid = cpsw->slaves[priv->emac_port].port_vlan;
 987                 flags = ALE_VLAN;
 988         }
 989
 990         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 991                            flags, vid);
 992         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
 993                            flags, vid);
 994
 995         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
 996         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
 997         for_each_slave(priv, cpsw_set_slave_mac, priv);
 998
 999         pm_runtime_put(cpsw->dev);
1000
1001         return 0;
1002 }
1003
1004 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1005                                 unsigned short vid)
1006 {
1007         int ret;
1008         int unreg_mcast_mask = 0;
1009         int mcast_mask;
1010         u32 port_mask;
1011         struct cpsw_common *cpsw = priv->cpsw;
1012
1013         if (cpsw->data.dual_emac) {
1014                 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1015
1016                 mcast_mask = ALE_PORT_HOST;
1017                 if (priv->ndev->flags & IFF_ALLMULTI)
1018                         unreg_mcast_mask = mcast_mask;
1019         } else {
1020                 port_mask = ALE_ALL_PORTS;
1021                 mcast_mask = port_mask;
1022
1023                 if (priv->ndev->flags & IFF_ALLMULTI)
1024                         unreg_mcast_mask = ALE_ALL_PORTS;
1025                 else
1026                         unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1027         }
1028
1029         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1030                                 unreg_mcast_mask);
1031         if (ret != 0)
1032                 return ret;
1033
1034         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1035                                  HOST_PORT_NUM, ALE_VLAN, vid);
1036         if (ret != 0)
1037                 goto clean_vid;
1038
1039         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1040                                  mcast_mask, ALE_VLAN, vid, 0);
1041         if (ret != 0)
1042                 goto clean_vlan_ucast;
1043         return 0;
1044
1045 clean_vlan_ucast:
1046         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1047                            HOST_PORT_NUM, ALE_VLAN, vid);
1048 clean_vid:
1049         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1050         return ret;
1051 }
1052
1053 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1054                                     __be16 proto, u16 vid)
1055 {
1056         struct cpsw_priv *priv = netdev_priv(ndev);
1057         struct cpsw_common *cpsw = priv->cpsw;
1058         int ret;
1059
1060         if (vid == cpsw->data.default_vlan)
1061                 return 0;
1062
1063         ret = pm_runtime_get_sync(cpsw->dev);
1064         if (ret < 0) {
1065                 pm_runtime_put_noidle(cpsw->dev);
1066                 return ret;
1067         }
1068
1069         if (cpsw->data.dual_emac) {
1070                 /* In dual EMAC, reserved VLAN id should not be used for
1071                  * creating VLAN interfaces as this can break the dual
1072                  * EMAC port separation
1073                  */
1074                 int i;
1075
1076                 for (i = 0; i < cpsw->data.slaves; i++) {
1077                         if (vid == cpsw->slaves[i].port_vlan) {
1078                                 ret = -EINVAL;
1079                                 goto err;
1080                         }
1081                 }
1082         }
1083
1084         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1085         ret = cpsw_add_vlan_ale_entry(priv, vid);
1086 err:
1087         pm_runtime_put(cpsw->dev);
1088         return ret;
1089 }
1090
1091 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1092                                      __be16 proto, u16 vid)
1093 {
1094         struct cpsw_priv *priv = netdev_priv(ndev);
1095         struct cpsw_common *cpsw = priv->cpsw;
1096         int ret;
1097
1098         if (vid == cpsw->data.default_vlan)
1099                 return 0;
1100
1101         ret = pm_runtime_get_sync(cpsw->dev);
1102         if (ret < 0) {
1103                 pm_runtime_put_noidle(cpsw->dev);
1104                 return ret;
1105         }
1106
1107         if (cpsw->data.dual_emac) {
1108                 int i;
1109
1110                 for (i = 0; i < cpsw->data.slaves; i++) {
1111                         if (vid == cpsw->slaves[i].port_vlan)
1112                                 goto err;
1113                 }
1114         }
1115
1116         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1117         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1118         ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1119                                   HOST_PORT_NUM, ALE_VLAN, vid);
1120         ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1121                                   0, ALE_VLAN, vid);
1122         ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1123 err:
1124         pm_runtime_put(cpsw->dev);
1125         return ret;
1126 }
1127
1128 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1129                              struct xdp_frame **frames, u32 flags)
1130 {
1131         struct cpsw_priv *priv = netdev_priv(ndev);
1132         struct cpsw_common *cpsw = priv->cpsw;
1133         struct xdp_frame *xdpf;
1134         int i, drops = 0, port;
1135
1136         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1137                 return -EINVAL;
1138
1139         for (i = 0; i < n; i++) {
1140                 xdpf = frames[i];
1141                 if (xdpf->len < CPSW_MIN_PACKET_SIZE) {
1142                         xdp_return_frame_rx_napi(xdpf);
1143                         drops++;
1144                         continue;
1145                 }
1146
1147                 port = priv->emac_port + cpsw->data.dual_emac;
1148                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1149                         drops++;
1150         }
1151
1152         return n - drops;
1153 }
1154
1155 #ifdef CONFIG_NET_POLL_CONTROLLER
1156 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1157 {
1158         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1159
1160         cpsw_intr_disable(cpsw);
1161         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1162         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1163         cpsw_intr_enable(cpsw);
1164 }
1165 #endif
1166
1167 static const struct net_device_ops cpsw_netdev_ops = {
1168         .ndo_open               = cpsw_ndo_open,
1169         .ndo_stop               = cpsw_ndo_stop,
1170         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1171         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1172         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1173         .ndo_validate_addr      = eth_validate_addr,
1174         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1175         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1176         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1177 #ifdef CONFIG_NET_POLL_CONTROLLER
1178         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1179 #endif
1180         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1181         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1182         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1183         .ndo_bpf                = cpsw_ndo_bpf,
1184         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1185 };
1186
1187 static void cpsw_get_drvinfo(struct net_device *ndev,
1188                              struct ethtool_drvinfo *info)
1189 {
1190         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1191         struct platform_device  *pdev = to_platform_device(cpsw->dev);
1192
1193         strlcpy(info->driver, "cpsw", sizeof(info->driver));
1194         strlcpy(info->version, "1.0", sizeof(info->version));
1195         strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1196 }
1197
1198 static int cpsw_set_pauseparam(struct net_device *ndev,
1199                                struct ethtool_pauseparam *pause)
1200 {
1201         struct cpsw_priv *priv = netdev_priv(ndev);
1202         bool link;
1203
1204         priv->rx_pause = pause->rx_pause ? true : false;
1205         priv->tx_pause = pause->tx_pause ? true : false;
1206
1207         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1208         return 0;
1209 }
1210
1211 static int cpsw_set_channels(struct net_device *ndev,
1212                              struct ethtool_channels *chs)
1213 {
1214         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1215 }
1216
1217 static const struct ethtool_ops cpsw_ethtool_ops = {
1218         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1219         .get_drvinfo    = cpsw_get_drvinfo,
1220         .get_msglevel   = cpsw_get_msglevel,
1221         .set_msglevel   = cpsw_set_msglevel,
1222         .get_link       = ethtool_op_get_link,
1223         .get_ts_info    = cpsw_get_ts_info,
1224         .get_coalesce   = cpsw_get_coalesce,
1225         .set_coalesce   = cpsw_set_coalesce,
1226         .get_sset_count         = cpsw_get_sset_count,
1227         .get_strings            = cpsw_get_strings,
1228         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1229         .get_pauseparam         = cpsw_get_pauseparam,
1230         .set_pauseparam         = cpsw_set_pauseparam,
1231         .get_wol        = cpsw_get_wol,
1232         .set_wol        = cpsw_set_wol,
1233         .get_regs_len   = cpsw_get_regs_len,
1234         .get_regs       = cpsw_get_regs,
1235         .begin          = cpsw_ethtool_op_begin,
1236         .complete       = cpsw_ethtool_op_complete,
1237         .get_channels   = cpsw_get_channels,
1238         .set_channels   = cpsw_set_channels,
1239         .get_link_ksettings     = cpsw_get_link_ksettings,
1240         .set_link_ksettings     = cpsw_set_link_ksettings,
1241         .get_eee        = cpsw_get_eee,
1242         .set_eee        = cpsw_set_eee,
1243         .nway_reset     = cpsw_nway_reset,
1244         .get_ringparam = cpsw_get_ringparam,
1245         .set_ringparam = cpsw_set_ringparam,
1246 };
1247
1248 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1249                          struct platform_device *pdev)
1250 {
1251         struct device_node *node = pdev->dev.of_node;
1252         struct device_node *slave_node;
1253         int i = 0, ret;
1254         u32 prop;
1255
1256         if (!node)
1257                 return -EINVAL;
1258
1259         if (of_property_read_u32(node, "slaves", &prop)) {
1260                 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1261                 return -EINVAL;
1262         }
1263         data->slaves = prop;
1264
1265         if (of_property_read_u32(node, "active_slave", &prop)) {
1266                 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1267                 return -EINVAL;
1268         }
1269         data->active_slave = prop;
1270
1271         data->slave_data = devm_kcalloc(&pdev->dev,
1272                                         data->slaves,
1273                                         sizeof(struct cpsw_slave_data),
1274                                         GFP_KERNEL);
1275         if (!data->slave_data)
1276                 return -ENOMEM;
1277
1278         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1279                 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1280                 return -EINVAL;
1281         }
1282         data->channels = prop;
1283
1284         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1285                 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1286                 return -EINVAL;
1287         }
1288         data->bd_ram_size = prop;
1289
1290         if (of_property_read_u32(node, "mac_control", &prop)) {
1291                 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1292                 return -EINVAL;
1293         }
1294         data->mac_control = prop;
1295
1296         if (of_property_read_bool(node, "dual_emac"))
1297                 data->dual_emac = true;
1298
1299         /*
1300          * Populate all the child nodes here...
1301          */
1302         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1303         /* We do not want to force this, as in some cases may not have child */
1304         if (ret)
1305                 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1306
1307         for_each_available_child_of_node(node, slave_node) {
1308                 struct cpsw_slave_data *slave_data = data->slave_data + i;
1309                 const void *mac_addr = NULL;
1310                 int lenp;
1311                 const __be32 *parp;
1312
1313                 /* This is no slave child node, continue */
1314                 if (!of_node_name_eq(slave_node, "slave"))
1315                         continue;
1316
1317                 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1318                                                     NULL);
1319                 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1320                     IS_ERR(slave_data->ifphy)) {
1321                         ret = PTR_ERR(slave_data->ifphy);
1322                         dev_err(&pdev->dev,
1323                                 "%d: Error retrieving port phy: %d\n", i, ret);
1324                         goto err_node_put;
1325                 }
1326
1327                 slave_data->slave_node = slave_node;
1328                 slave_data->phy_node = of_parse_phandle(slave_node,
1329                                                         "phy-handle", 0);
1330                 parp = of_get_property(slave_node, "phy_id", &lenp);
1331                 if (slave_data->phy_node) {
1332                         dev_dbg(&pdev->dev,
1333                                 "slave[%d] using phy-handle=\"%pOF\"\n",
1334                                 i, slave_data->phy_node);
1335                 } else if (of_phy_is_fixed_link(slave_node)) {
1336                         /* In the case of a fixed PHY, the DT node associated
1337                          * to the PHY is the Ethernet MAC DT node.
1338                          */
1339                         ret = of_phy_register_fixed_link(slave_node);
1340                         if (ret) {
1341                                 if (ret != -EPROBE_DEFER)
1342                                         dev_err(&pdev->dev, "failed to register fixed-link phy: %d\n", ret);
1343                                 goto err_node_put;
1344                         }
1345                         slave_data->phy_node = of_node_get(slave_node);
1346                 } else if (parp) {
1347                         u32 phyid;
1348                         struct device_node *mdio_node;
1349                         struct platform_device *mdio;
1350
1351                         if (lenp != (sizeof(__be32) * 2)) {
1352                                 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1353                                 goto no_phy_slave;
1354                         }
1355                         mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1356                         phyid = be32_to_cpup(parp+1);
1357                         mdio = of_find_device_by_node(mdio_node);
1358                         of_node_put(mdio_node);
1359                         if (!mdio) {
1360                                 dev_err(&pdev->dev, "Missing mdio platform device\n");
1361                                 ret = -EINVAL;
1362                                 goto err_node_put;
1363                         }
1364                         snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1365                                  PHY_ID_FMT, mdio->name, phyid);
1366                         put_device(&mdio->dev);
1367                 } else {
1368                         dev_err(&pdev->dev,
1369                                 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1370                                 i);
1371                         goto no_phy_slave;
1372                 }
1373                 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1374                 if (ret) {
1375                         dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1376                                 i);
1377                         goto err_node_put;
1378                 }
1379
1380 no_phy_slave:
1381                 mac_addr = of_get_mac_address(slave_node);
1382                 if (!IS_ERR(mac_addr)) {
1383                         ether_addr_copy(slave_data->mac_addr, mac_addr);
1384                 } else {
1385                         ret = ti_cm_get_macid(&pdev->dev, i,
1386                                               slave_data->mac_addr);
1387                         if (ret)
1388                                 goto err_node_put;
1389                 }
1390                 if (data->dual_emac) {
1391                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1392                                                  &prop)) {
1393                                 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1394                                 slave_data->dual_emac_res_vlan = i+1;
1395                                 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1396                                         slave_data->dual_emac_res_vlan, i);
1397                         } else {
1398                                 slave_data->dual_emac_res_vlan = prop;
1399                         }
1400                 }
1401
1402                 i++;
1403                 if (i == data->slaves) {
1404                         ret = 0;
1405                         goto err_node_put;
1406                 }
1407         }
1408
1409         return 0;
1410
1411 err_node_put:
1412         of_node_put(slave_node);
1413         return ret;
1414 }
1415
1416 static void cpsw_remove_dt(struct platform_device *pdev)
1417 {
1418         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1419         struct cpsw_platform_data *data = &cpsw->data;
1420         struct device_node *node = pdev->dev.of_node;
1421         struct device_node *slave_node;
1422         int i = 0;
1423
1424         for_each_available_child_of_node(node, slave_node) {
1425                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1426
1427                 if (!of_node_name_eq(slave_node, "slave"))
1428                         continue;
1429
1430                 if (of_phy_is_fixed_link(slave_node))
1431                         of_phy_deregister_fixed_link(slave_node);
1432
1433                 of_node_put(slave_data->phy_node);
1434
1435                 i++;
1436                 if (i == data->slaves) {
1437                         of_node_put(slave_node);
1438                         break;
1439                 }
1440         }
1441
1442         of_platform_depopulate(&pdev->dev);
1443 }
1444
1445 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1446 {
1447         struct cpsw_common              *cpsw = priv->cpsw;
1448         struct cpsw_platform_data       *data = &cpsw->data;
1449         struct net_device               *ndev;
1450         struct cpsw_priv                *priv_sl2;
1451         int ret = 0;
1452
1453         ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1454                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1455         if (!ndev) {
1456                 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1457                 return -ENOMEM;
1458         }
1459
1460         priv_sl2 = netdev_priv(ndev);
1461         priv_sl2->cpsw = cpsw;
1462         priv_sl2->ndev = ndev;
1463         priv_sl2->dev  = &ndev->dev;
1464         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1465
1466         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1467                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1468                         ETH_ALEN);
1469                 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1470                          priv_sl2->mac_addr);
1471         } else {
1472                 eth_random_addr(priv_sl2->mac_addr);
1473                 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1474                          priv_sl2->mac_addr);
1475         }
1476         memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1477
1478         priv_sl2->emac_port = 1;
1479         cpsw->slaves[1].ndev = ndev;
1480         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1481
1482         ndev->netdev_ops = &cpsw_netdev_ops;
1483         ndev->ethtool_ops = &cpsw_ethtool_ops;
1484
1485         /* register the network device */
1486         SET_NETDEV_DEV(ndev, cpsw->dev);
1487         ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1488         ret = register_netdev(ndev);
1489         if (ret)
1490                 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1491
1492         return ret;
1493 }
1494
1495 static const struct of_device_id cpsw_of_mtable[] = {
1496         { .compatible = "ti,cpsw"},
1497         { .compatible = "ti,am335x-cpsw"},
1498         { .compatible = "ti,am4372-cpsw"},
1499         { .compatible = "ti,dra7-cpsw"},
1500         { /* sentinel */ },
1501 };
1502 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1503
1504 static const struct soc_device_attribute cpsw_soc_devices[] = {
1505         { .family = "AM33xx", .revision = "ES1.0"},
1506         { /* sentinel */ }
1507 };
1508
1509 static int cpsw_probe(struct platform_device *pdev)
1510 {
1511         struct device                   *dev = &pdev->dev;
1512         struct clk                      *clk;
1513         struct cpsw_platform_data       *data;
1514         struct net_device               *ndev;
1515         struct cpsw_priv                *priv;
1516         void __iomem                    *ss_regs;
1517         struct resource                 *ss_res;
1518         struct gpio_descs               *mode;
1519         const struct soc_device_attribute *soc;
1520         struct cpsw_common              *cpsw;
1521         int ret = 0, ch;
1522         int irq;
1523
1524         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1525         if (!cpsw)
1526                 return -ENOMEM;
1527
1528         platform_set_drvdata(pdev, cpsw);
1529         cpsw_slave_index = cpsw_slave_index_priv;
1530
1531         cpsw->dev = dev;
1532
1533         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1534         if (IS_ERR(mode)) {
1535                 ret = PTR_ERR(mode);
1536                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1537                 return ret;
1538         }
1539
1540         clk = devm_clk_get(dev, "fck");
1541         if (IS_ERR(clk)) {
1542                 ret = PTR_ERR(clk);
1543                 dev_err(dev, "fck is not found %d\n", ret);
1544                 return ret;
1545         }
1546         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1547
1548         ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1549         ss_regs = devm_ioremap_resource(dev, ss_res);
1550         if (IS_ERR(ss_regs))
1551                 return PTR_ERR(ss_regs);
1552         cpsw->regs = ss_regs;
1553
1554         cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1555         if (IS_ERR(cpsw->wr_regs))
1556                 return PTR_ERR(cpsw->wr_regs);
1557
1558         /* RX IRQ */
1559         irq = platform_get_irq(pdev, 1);
1560         if (irq < 0)
1561                 return irq;
1562         cpsw->irqs_table[0] = irq;
1563
1564         /* TX IRQ */
1565         irq = platform_get_irq(pdev, 2);
1566         if (irq < 0)
1567                 return irq;
1568         cpsw->irqs_table[1] = irq;
1569
1570         /* get misc irq*/
1571         irq = platform_get_irq(pdev, 3);
1572         if (irq <= 0)
1573                 return irq;
1574         cpsw->misc_irq = irq;
1575
1576         /*
1577          * This may be required here for child devices.
1578          */
1579         pm_runtime_enable(dev);
1580
1581         /* Need to enable clocks with runtime PM api to access module
1582          * registers
1583          */
1584         ret = pm_runtime_get_sync(dev);
1585         if (ret < 0) {
1586                 pm_runtime_put_noidle(dev);
1587                 goto clean_runtime_disable_ret;
1588         }
1589
1590         ret = cpsw_probe_dt(&cpsw->data, pdev);
1591         if (ret)
1592                 goto clean_dt_ret;
1593
1594         soc = soc_device_match(cpsw_soc_devices);
1595         if (soc)
1596                 cpsw->quirk_irq = true;
1597
1598         data = &cpsw->data;
1599         cpsw->slaves = devm_kcalloc(dev,
1600                                     data->slaves, sizeof(struct cpsw_slave),
1601                                     GFP_KERNEL);
1602         if (!cpsw->slaves) {
1603                 ret = -ENOMEM;
1604                 goto clean_dt_ret;
1605         }
1606
1607         cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1608         cpsw->descs_pool_size = descs_pool_size;
1609
1610         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1611                                ss_res->start + CPSW2_BD_OFFSET,
1612                                descs_pool_size);
1613         if (ret)
1614                 goto clean_dt_ret;
1615
1616         ch = cpsw->quirk_irq ? 0 : 7;
1617         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1618         if (IS_ERR(cpsw->txv[0].ch)) {
1619                 dev_err(dev, "error initializing tx dma channel\n");
1620                 ret = PTR_ERR(cpsw->txv[0].ch);
1621                 goto clean_cpts;
1622         }
1623
1624         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1625         if (IS_ERR(cpsw->rxv[0].ch)) {
1626                 dev_err(dev, "error initializing rx dma channel\n");
1627                 ret = PTR_ERR(cpsw->rxv[0].ch);
1628                 goto clean_cpts;
1629         }
1630         cpsw_split_res(cpsw);
1631
1632         /* setup netdev */
1633         ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1634                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1635         if (!ndev) {
1636                 dev_err(dev, "error allocating net_device\n");
1637                 ret = -ENOMEM;
1638                 goto clean_cpts;
1639         }
1640
1641         priv = netdev_priv(ndev);
1642         priv->cpsw = cpsw;
1643         priv->ndev = ndev;
1644         priv->dev  = dev;
1645         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1646         priv->emac_port = 0;
1647
1648         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1649                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1650                 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1651         } else {
1652                 eth_random_addr(priv->mac_addr);
1653                 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1654         }
1655
1656         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1657
1658         cpsw->slaves[0].ndev = ndev;
1659
1660         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1661
1662         ndev->netdev_ops = &cpsw_netdev_ops;
1663         ndev->ethtool_ops = &cpsw_ethtool_ops;
1664         netif_napi_add(ndev, &cpsw->napi_rx,
1665                        cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll,
1666                        CPSW_POLL_WEIGHT);
1667         netif_tx_napi_add(ndev, &cpsw->napi_tx,
1668                           cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll,
1669                           CPSW_POLL_WEIGHT);
1670
1671         /* register the network device */
1672         SET_NETDEV_DEV(ndev, dev);
1673         ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1674         ret = register_netdev(ndev);
1675         if (ret) {
1676                 dev_err(dev, "error registering net device\n");
1677                 ret = -ENODEV;
1678                 goto clean_cpts;
1679         }
1680
1681         if (cpsw->data.dual_emac) {
1682                 ret = cpsw_probe_dual_emac(priv);
1683                 if (ret) {
1684                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1685                         goto clean_unregister_netdev_ret;
1686                 }
1687         }
1688
1689         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1690          * MISC IRQs which are always kept disabled with this driver so
1691          * we will not request them.
1692          *
1693          * If anyone wants to implement support for those, make sure to
1694          * first request and append them to irqs_table array.
1695          */
1696         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1697                                0, dev_name(dev), cpsw);
1698         if (ret < 0) {
1699                 dev_err(dev, "error attaching irq (%d)\n", ret);
1700                 goto clean_unregister_netdev_ret;
1701         }
1702
1703
1704         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1705                                0, dev_name(&pdev->dev), cpsw);
1706         if (ret < 0) {
1707                 dev_err(dev, "error attaching irq (%d)\n", ret);
1708                 goto clean_unregister_netdev_ret;
1709         }
1710
1711         if (!cpsw->cpts)
1712                 goto skip_cpts;
1713
1714         ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1715                                0, dev_name(&pdev->dev), cpsw);
1716         if (ret < 0) {
1717                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1718                 goto clean_unregister_netdev_ret;
1719         }
1720
1721         /* Enable misc CPTS evnt_pend IRQ */
1722         cpts_set_irqpoll(cpsw->cpts, false);
1723
1724 skip_cpts:
1725         cpsw_notice(priv, probe,
1726                     "initialized device (regs %pa, irq %d, pool size %d)\n",
1727                     &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1728
1729         pm_runtime_put(&pdev->dev);
1730
1731         return 0;
1732
1733 clean_unregister_netdev_ret:
1734         unregister_netdev(ndev);
1735 clean_cpts:
1736         cpts_release(cpsw->cpts);
1737         cpdma_ctlr_destroy(cpsw->dma);
1738 clean_dt_ret:
1739         cpsw_remove_dt(pdev);
1740         pm_runtime_put_sync(&pdev->dev);
1741 clean_runtime_disable_ret:
1742         pm_runtime_disable(&pdev->dev);
1743         return ret;
1744 }
1745
1746 static int cpsw_remove(struct platform_device *pdev)
1747 {
1748         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1749         int i, ret;
1750
1751         ret = pm_runtime_get_sync(&pdev->dev);
1752         if (ret < 0) {
1753                 pm_runtime_put_noidle(&pdev->dev);
1754                 return ret;
1755         }
1756
1757         for (i = 0; i < cpsw->data.slaves; i++)
1758                 if (cpsw->slaves[i].ndev)
1759                         unregister_netdev(cpsw->slaves[i].ndev);
1760
1761         cpts_release(cpsw->cpts);
1762         cpdma_ctlr_destroy(cpsw->dma);
1763         cpsw_remove_dt(pdev);
1764         pm_runtime_put_sync(&pdev->dev);
1765         pm_runtime_disable(&pdev->dev);
1766         return 0;
1767 }
1768
1769 #ifdef CONFIG_PM_SLEEP
1770 static int cpsw_suspend(struct device *dev)
1771 {
1772         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1773         int i;
1774
1775         rtnl_lock();
1776
1777         for (i = 0; i < cpsw->data.slaves; i++)
1778                 if (cpsw->slaves[i].ndev)
1779                         if (netif_running(cpsw->slaves[i].ndev))
1780                                 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1781
1782         rtnl_unlock();
1783
1784         /* Select sleep pin state */
1785         pinctrl_pm_select_sleep_state(dev);
1786
1787         return 0;
1788 }
1789
1790 static int cpsw_resume(struct device *dev)
1791 {
1792         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1793         int i;
1794
1795         /* Select default pin state */
1796         pinctrl_pm_select_default_state(dev);
1797
1798         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1799         rtnl_lock();
1800
1801         for (i = 0; i < cpsw->data.slaves; i++)
1802                 if (cpsw->slaves[i].ndev)
1803                         if (netif_running(cpsw->slaves[i].ndev))
1804                                 cpsw_ndo_open(cpsw->slaves[i].ndev);
1805
1806         rtnl_unlock();
1807
1808         return 0;
1809 }
1810 #endif
1811
1812 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1813
1814 static struct platform_driver cpsw_driver = {
1815         .driver = {
1816                 .name    = "cpsw",
1817                 .pm      = &cpsw_pm_ops,
1818                 .of_match_table = cpsw_of_mtable,
1819         },
1820         .probe = cpsw_probe,
1821         .remove = cpsw_remove,
1822 };
1823
1824 module_platform_driver(cpsw_driver);
1825
1826 MODULE_LICENSE("GPL");
1827 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1828 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1829 MODULE_DESCRIPTION("TI CPSW Ethernet driver");