drivers/net/ethernet/ti/cpsw_new.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Texas Instruments Ethernet Switch Driver
   4  *
   5  * Copyright (C) 2019 Texas Instruments
   6  */
   7
   8 #include <linux/io.h>
   9 #include <linux/clk.h>
  10 #include <linux/timer.h>
  11 #include <linux/module.h>
  12 #include <linux/irqreturn.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/if_ether.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/net_tstamp.h>
  17 #include <linux/phy.h>
  18 #include <linux/phy/phy.h>
  19 #include <linux/delay.h>
  20 #include <linux/pinctrl/consumer.h>
  21 #include <linux/pm_runtime.h>
  22 #include <linux/gpio/consumer.h>
  23 #include <linux/of.h>
  24 #include <linux/of_mdio.h>
  25 #include <linux/of_net.h>
  26 #include <linux/of_device.h>
  27 #include <linux/if_vlan.h>
  28 #include <linux/kmemleak.h>
  29 #include <linux/sys_soc.h>
  30
  31 #include <net/page_pool.h>
  32 #include <net/pkt_cls.h>
  33 #include <net/devlink.h>
  34
  35 #include "cpsw.h"
  36 #include "cpsw_ale.h"
  37 #include "cpsw_priv.h"
  38 #include "cpsw_sl.h"
  39 #include "cpsw_switchdev.h"
  40 #include "cpts.h"
  41 #include "davinci_cpdma.h"
  42
  43 #include <net/pkt_sched.h>
  44
  45 static int debug_level;
  46 static int ale_ageout = CPSW_ALE_AGEOUT_DEFAULT;
  47 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
  48 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
  49
  50 struct cpsw_devlink {
  51         struct cpsw_common *cpsw;
  52 };
  53
  54 enum cpsw_devlink_param_id {
  55         CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
  56         CPSW_DL_PARAM_SWITCH_MODE,
  57         CPSW_DL_PARAM_ALE_BYPASS,
  58 };
  59
  60 /* struct cpsw_common is not needed, kept here for compatibility
  61  * reasons witrh the old driver
  62  */
  63 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
  64                                  struct cpsw_priv *priv)
  65 {
  66         if (priv->emac_port == HOST_PORT_NUM)
  67                 return -1;
  68
  69         return priv->emac_port - 1;
  70 }
  71
  72 static bool cpsw_is_switch_en(struct cpsw_common *cpsw)
  73 {
  74         return !cpsw->data.dual_emac;
  75 }
  76
  77 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
  78 {
  79         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
  80         bool enable_uni = false;
  81         int i;
  82
  83         if (cpsw_is_switch_en(cpsw))
  84                 return;
  85
  86         /* Enabling promiscuous mode for one interface will be
  87          * common for both the interface as the interface shares
  88          * the same hardware resource.
  89          */
  90         for (i = 0; i < cpsw->data.slaves; i++)
  91                 if (cpsw->slaves[i].ndev &&
  92                     (cpsw->slaves[i].ndev->flags & IFF_PROMISC))
  93                         enable_uni = true;
  94
  95         if (!enable && enable_uni) {
  96                 enable = enable_uni;
  97                 dev_dbg(cpsw->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
  98         }
  99
 100         if (enable) {
 101                 /* Enable unknown unicast, reg/unreg mcast */
 102                 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 103                                      ALE_P0_UNI_FLOOD, 1);
 104
 105                 dev_dbg(cpsw->dev, "promiscuity enabled\n");
 106         } else {
 107                 /* Disable unknown unicast */
 108                 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 109                                      ALE_P0_UNI_FLOOD, 0);
 110                 dev_dbg(cpsw->dev, "promiscuity disabled\n");
 111         }
 112 }
 113
 114 /**
 115  * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
 116  * if it's not deleted
 117  * @ndev: device to sync
 118  * @addr: address to be added or deleted
 119  * @vid: vlan id, if vid < 0 set/unset address for real device
 120  * @add: add address if the flag is set or remove otherwise
 121  */
 122 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
 123                        int vid, int add)
 124 {
 125         struct cpsw_priv *priv = netdev_priv(ndev);
 126         struct cpsw_common *cpsw = priv->cpsw;
 127         int mask, flags, ret, slave_no;
 128
 129         slave_no = cpsw_slave_index(cpsw, priv);
 130         if (vid < 0)
 131                 vid = cpsw->slaves[slave_no].port_vlan;
 132
 133         mask =  ALE_PORT_HOST;
 134         flags = vid ? ALE_VLAN : 0;
 135
 136         if (add)
 137                 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
 138         else
 139                 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
 140
 141         return ret;
 142 }
 143
 144 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 145 {
 146         struct addr_sync_ctx *sync_ctx = ctx;
 147         struct netdev_hw_addr *ha;
 148         int found = 0, ret = 0;
 149
 150         if (!vdev || !(vdev->flags & IFF_UP))
 151                 return 0;
 152
 153         /* vlan address is relevant if its sync_cnt != 0 */
 154         netdev_for_each_mc_addr(ha, vdev) {
 155                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 156                         found = ha->sync_cnt;
 157                         break;
 158                 }
 159         }
 160
 161         if (found)
 162                 sync_ctx->consumed++;
 163
 164         if (sync_ctx->flush) {
 165                 if (!found)
 166                         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 167                 return 0;
 168         }
 169
 170         if (found)
 171                 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
 172
 173         return ret;
 174 }
 175
 176 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 177 {
 178         struct addr_sync_ctx sync_ctx;
 179         int ret;
 180
 181         sync_ctx.consumed = 0;
 182         sync_ctx.addr = addr;
 183         sync_ctx.ndev = ndev;
 184         sync_ctx.flush = 0;
 185
 186         ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 187         if (sync_ctx.consumed < num && !ret)
 188                 ret = cpsw_set_mc(ndev, addr, -1, 1);
 189
 190         return ret;
 191 }
 192
 193 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 194 {
 195         struct addr_sync_ctx sync_ctx;
 196
 197         sync_ctx.consumed = 0;
 198         sync_ctx.addr = addr;
 199         sync_ctx.ndev = ndev;
 200         sync_ctx.flush = 1;
 201
 202         vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 203         if (sync_ctx.consumed == num)
 204                 cpsw_set_mc(ndev, addr, -1, 0);
 205
 206         return 0;
 207 }
 208
 209 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 210 {
 211         struct addr_sync_ctx *sync_ctx = ctx;
 212         struct netdev_hw_addr *ha;
 213         int found = 0;
 214
 215         if (!vdev || !(vdev->flags & IFF_UP))
 216                 return 0;
 217
 218         /* vlan address is relevant if its sync_cnt != 0 */
 219         netdev_for_each_mc_addr(ha, vdev) {
 220                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 221                         found = ha->sync_cnt;
 222                         break;
 223                 }
 224         }
 225
 226         if (!found)
 227                 return 0;
 228
 229         sync_ctx->consumed++;
 230         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 231         return 0;
 232 }
 233
 234 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
 235 {
 236         struct addr_sync_ctx sync_ctx;
 237
 238         sync_ctx.addr = addr;
 239         sync_ctx.ndev = ndev;
 240         sync_ctx.consumed = 0;
 241
 242         vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
 243         if (sync_ctx.consumed < num)
 244                 cpsw_set_mc(ndev, addr, -1, 0);
 245
 246         return 0;
 247 }
 248
 249 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 250 {
 251         struct cpsw_priv *priv = netdev_priv(ndev);
 252         struct cpsw_common *cpsw = priv->cpsw;
 253
 254         if (ndev->flags & IFF_PROMISC) {
 255                 /* Enable promiscuous mode */
 256                 cpsw_set_promiscious(ndev, true);
 257                 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, priv->emac_port);
 258                 return;
 259         }
 260
 261         /* Disable promiscuous mode */
 262         cpsw_set_promiscious(ndev, false);
 263
 264         /* Restore allmulti on vlans if necessary */
 265         cpsw_ale_set_allmulti(cpsw->ale,
 266                               ndev->flags & IFF_ALLMULTI, priv->emac_port);
 267
 268         /* add/remove mcast address either for real netdev or for vlan */
 269         __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
 270                                cpsw_del_mc_addr);
 271 }
 272
 273 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
 274 {
 275         len += CPSW_HEADROOM;
 276         len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 277
 278         return SKB_DATA_ALIGN(len);
 279 }
 280
 281 static void cpsw_rx_handler(void *token, int len, int status)
 282 {
 283         struct page *new_page, *page = token;
 284         void *pa = page_address(page);
 285         int headroom = CPSW_HEADROOM;
 286         struct cpsw_meta_xdp *xmeta;
 287         struct cpsw_common *cpsw;
 288         struct net_device *ndev;
 289         int port, ch, pkt_size;
 290         struct cpsw_priv *priv;
 291         struct page_pool *pool;
 292         struct sk_buff *skb;
 293         struct xdp_buff xdp;
 294         int ret = 0;
 295         dma_addr_t dma;
 296
 297         xmeta = pa + CPSW_XMETA_OFFSET;
 298         cpsw = ndev_to_cpsw(xmeta->ndev);
 299         ndev = xmeta->ndev;
 300         pkt_size = cpsw->rx_packet_max;
 301         ch = xmeta->ch;
 302
 303         if (status >= 0) {
 304                 port = CPDMA_RX_SOURCE_PORT(status);
 305                 if (port)
 306                         ndev = cpsw->slaves[--port].ndev;
 307         }
 308
 309         priv = netdev_priv(ndev);
 310         pool = cpsw->page_pool[ch];
 311
 312         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
 313                 /* In dual emac mode check for all interfaces */
 314                 if (cpsw->usage_count && status >= 0) {
 315                         /* The packet received is for the interface which
 316                          * is already down and the other interface is up
 317                          * and running, instead of freeing which results
 318                          * in reducing of the number of rx descriptor in
 319                          * DMA engine, requeue page back to cpdma.
 320                          */
 321                         new_page = page;
 322                         goto requeue;
 323                 }
 324
 325                 /* the interface is going down, pages are purged */
 326                 page_pool_recycle_direct(pool, page);
 327                 return;
 328         }
 329
 330         new_page = page_pool_dev_alloc_pages(pool);
 331         if (unlikely(!new_page)) {
 332                 new_page = page;
 333                 ndev->stats.rx_dropped++;
 334                 goto requeue;
 335         }
 336
 337         if (priv->xdp_prog) {
 338                 int headroom = CPSW_HEADROOM, size = len;
 339
 340                 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
 341                 if (status & CPDMA_RX_VLAN_ENCAP) {
 342                         headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 343                         size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 344                 }
 345
 346                 xdp_prepare_buff(&xdp, pa, headroom, size, false);
 347
 348                 ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port, &len);
 349                 if (ret != CPSW_XDP_PASS)
 350                         goto requeue;
 351
 352                 headroom = xdp.data - xdp.data_hard_start;
 353
 354                 /* XDP prog can modify vlan tag, so can't use encap header */
 355                 status &= ~CPDMA_RX_VLAN_ENCAP;
 356         }
 357
 358         /* pass skb to netstack if no XDP prog or returned XDP_PASS */
 359         skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 360         if (!skb) {
 361                 ndev->stats.rx_dropped++;
 362                 page_pool_recycle_direct(pool, page);
 363                 goto requeue;
 364         }
 365
 366         skb->offload_fwd_mark = priv->offload_fwd_mark;
 367         skb_reserve(skb, headroom);
 368         skb_put(skb, len);
 369         skb->dev = ndev;
 370         if (status & CPDMA_RX_VLAN_ENCAP)
 371                 cpsw_rx_vlan_encap(skb);
 372         if (priv->rx_ts_enabled)
 373                 cpts_rx_timestamp(cpsw->cpts, skb);
 374         skb->protocol = eth_type_trans(skb, ndev);
 375
 376         /* mark skb for recycling */
 377         skb_mark_for_recycle(skb, page, pool);
 378         netif_receive_skb(skb);
 379
 380         ndev->stats.rx_bytes += len;
 381         ndev->stats.rx_packets++;
 382
 383 requeue:
 384         xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 385         xmeta->ndev = ndev;
 386         xmeta->ch = ch;
 387
 388         dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
 389         ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 390                                        pkt_size, 0);
 391         if (ret < 0) {
 392                 WARN_ON(ret == -ENOMEM);
 393                 page_pool_recycle_direct(pool, new_page);
 394         }
 395 }
 396
 397 static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 398                                    unsigned short vid)
 399 {
 400         struct cpsw_common *cpsw = priv->cpsw;
 401         int unreg_mcast_mask = 0;
 402         int mcast_mask;
 403         u32 port_mask;
 404         int ret;
 405
 406         port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
 407
 408         mcast_mask = ALE_PORT_HOST;
 409         if (priv->ndev->flags & IFF_ALLMULTI)
 410                 unreg_mcast_mask = mcast_mask;
 411
 412         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
 413                                 unreg_mcast_mask);
 414         if (ret != 0)
 415                 return ret;
 416
 417         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 418                                  HOST_PORT_NUM, ALE_VLAN, vid);
 419         if (ret != 0)
 420                 goto clean_vid;
 421
 422         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 423                                  mcast_mask, ALE_VLAN, vid, 0);
 424         if (ret != 0)
 425                 goto clean_vlan_ucast;
 426         return 0;
 427
 428 clean_vlan_ucast:
 429         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
 430                            HOST_PORT_NUM, ALE_VLAN, vid);
 431 clean_vid:
 432         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
 433         return ret;
 434 }
 435
 436 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
 437                                     __be16 proto, u16 vid)
 438 {
 439         struct cpsw_priv *priv = netdev_priv(ndev);
 440         struct cpsw_common *cpsw = priv->cpsw;
 441         int ret, i;
 442
 443         if (cpsw_is_switch_en(cpsw)) {
 444                 dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
 445                 return 0;
 446         }
 447
 448         if (vid == cpsw->data.default_vlan)
 449                 return 0;
 450
 451         ret = pm_runtime_get_sync(cpsw->dev);
 452         if (ret < 0) {
 453                 pm_runtime_put_noidle(cpsw->dev);
 454                 return ret;
 455         }
 456
 457         /* In dual EMAC, reserved VLAN id should not be used for
 458          * creating VLAN interfaces as this can break the dual
 459          * EMAC port separation
 460          */
 461         for (i = 0; i < cpsw->data.slaves; i++) {
 462                 if (cpsw->slaves[i].ndev &&
 463                     vid == cpsw->slaves[i].port_vlan) {
 464                         ret = -EINVAL;
 465                         goto err;
 466                 }
 467         }
 468
 469         dev_dbg(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
 470         ret = cpsw_add_vlan_ale_entry(priv, vid);
 471 err:
 472         pm_runtime_put(cpsw->dev);
 473         return ret;
 474 }
 475
 476 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 477 {
 478         struct cpsw_priv *priv = arg;
 479
 480         if (!vdev || !vid)
 481                 return 0;
 482
 483         cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 484         return 0;
 485 }
 486
 487 /* restore resources after port reset */
 488 static void cpsw_restore(struct cpsw_priv *priv)
 489 {
 490         struct cpsw_common *cpsw = priv->cpsw;
 491
 492         /* restore vlan configurations */
 493         vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 494
 495         /* restore MQPRIO offload */
 496         cpsw_mqprio_resume(&cpsw->slaves[priv->emac_port - 1], priv);
 497
 498         /* restore CBS offload */
 499         cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
 500 }
 501
 502 static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
 503 {
 504         char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
 505
 506         cpsw_ale_add_mcast(cpsw->ale, stpa,
 507                            ALE_PORT_HOST, ALE_SUPER, 0,
 508                            ALE_MCAST_BLOCK_LEARN_FWD);
 509 }
 510
 511 static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
 512 {
 513         int vlan = cpsw->data.default_vlan;
 514
 515         writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
 516
 517         writel(vlan, &cpsw->host_port_regs->port_vlan);
 518
 519         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 520                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 521                           ALE_PORT_1 | ALE_PORT_2);
 522
 523         cpsw_init_stp_ale_entry(cpsw);
 524
 525         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
 526         dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
 527         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
 528 }
 529
 530 static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
 531 {
 532         int vlan = cpsw->data.default_vlan;
 533
 534         writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
 535
 536         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
 537         dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
 538
 539         writel(vlan, &cpsw->host_port_regs->port_vlan);
 540
 541         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 542         /* learning make no sense in dual_mac mode */
 543         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
 544 }
 545
 546 static void cpsw_init_host_port(struct cpsw_priv *priv)
 547 {
 548         struct cpsw_common *cpsw = priv->cpsw;
 549         u32 control_reg;
 550
 551         /* soft reset the controller and initialize ale */
 552         soft_reset("cpsw", &cpsw->regs->soft_reset);
 553         cpsw_ale_start(cpsw->ale);
 554
 555         /* switch to vlan unaware mode */
 556         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 557                              CPSW_ALE_VLAN_AWARE);
 558         control_reg = readl(&cpsw->regs->control);
 559         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 560         writel(control_reg, &cpsw->regs->control);
 561
 562         /* setup host port priority mapping */
 563         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 564                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 565         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 566
 567         /* disable priority elevation */
 568         writel_relaxed(0, &cpsw->regs->ptype);
 569
 570         /* enable statistics collection only on all ports */
 571         writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 572
 573         /* Enable internal fifo flow control */
 574         writel(0x7, &cpsw->regs->flow_control);
 575
 576         if (cpsw_is_switch_en(cpsw))
 577                 cpsw_init_host_port_switch(cpsw);
 578         else
 579                 cpsw_init_host_port_dual_mac(cpsw);
 580
 581         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 582                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 583 }
 584
 585 static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
 586                                                     struct cpsw_slave *slave)
 587 {
 588         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 589         struct cpsw_common *cpsw = priv->cpsw;
 590         u32 reg;
 591
 592         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 593                CPSW2_PORT_VLAN;
 594         slave_write(slave, slave->port_vlan, reg);
 595
 596         cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 597                           port_mask, port_mask, 0);
 598         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 599                            ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
 600                            ALE_MCAST_FWD);
 601         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 602                            HOST_PORT_NUM, ALE_VLAN |
 603                            ALE_SECURE, slave->port_vlan);
 604         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 605                              ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 606         /* learning make no sense in dual_mac mode */
 607         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 608                              ALE_PORT_NOLEARN, 1);
 609 }
 610
 611 static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
 612                                                  struct cpsw_slave *slave)
 613 {
 614         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 615         struct cpsw_common *cpsw = priv->cpsw;
 616         u32 reg;
 617
 618         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 619                              ALE_PORT_DROP_UNKNOWN_VLAN, 0);
 620         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 621                              ALE_PORT_NOLEARN, 0);
 622         /* disabling SA_UPDATE required to make stp work, without this setting
 623          * Host MAC addresses will jump between ports.
 624          * As per TRM MAC address can be defined as unicast supervisory (super)
 625          * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
 626          * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
 627          * causes STP packets to be dropped due to ingress filter
 628          *      if (source address found) and (secure) and
 629          *         (receive port number != port_number))
 630          *         then discard the packet
 631          */
 632         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 633                              ALE_PORT_NO_SA_UPDATE, 1);
 634
 635         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 636                            port_mask, ALE_VLAN, slave->port_vlan,
 637                            ALE_MCAST_FWD_2);
 638         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 639                            HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
 640
 641         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 642                CPSW2_PORT_VLAN;
 643         slave_write(slave, slave->port_vlan, reg);
 644 }
 645
 646 static void cpsw_adjust_link(struct net_device *ndev)
 647 {
 648         struct cpsw_priv *priv = netdev_priv(ndev);
 649         struct cpsw_common *cpsw = priv->cpsw;
 650         struct cpsw_slave *slave;
 651         struct phy_device *phy;
 652         u32 mac_control = 0;
 653
 654         slave = &cpsw->slaves[priv->emac_port - 1];
 655         phy = slave->phy;
 656
 657         if (!phy)
 658                 return;
 659
 660         if (phy->link) {
 661                 mac_control = CPSW_SL_CTL_GMII_EN;
 662
 663                 if (phy->speed == 1000)
 664                         mac_control |= CPSW_SL_CTL_GIG;
 665                 if (phy->duplex)
 666                         mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 667
 668                 /* set speed_in input in case RMII mode is used in 100Mbps */
 669                 if (phy->speed == 100)
 670                         mac_control |= CPSW_SL_CTL_IFCTL_A;
 671                 /* in band mode only works in 10Mbps RGMII mode */
 672                 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 673                         mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 674
 675                 if (priv->rx_pause)
 676                         mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 677
 678                 if (priv->tx_pause)
 679                         mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 680
 681                 if (mac_control != slave->mac_control)
 682                         cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 683
 684                 /* enable forwarding */
 685                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 686                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 687
 688                 netif_tx_wake_all_queues(ndev);
 689
 690                 if (priv->shp_cfg_speed &&
 691                     priv->shp_cfg_speed != slave->phy->speed &&
 692                     !cpsw_shp_is_off(priv))
 693                         dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
 694         } else {
 695                 netif_tx_stop_all_queues(ndev);
 696
 697                 mac_control = 0;
 698                 /* disable forwarding */
 699                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 700                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 701
 702                 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 703
 704                 cpsw_sl_ctl_reset(slave->mac_sl);
 705         }
 706
 707         if (mac_control != slave->mac_control)
 708                 phy_print_status(phy);
 709
 710         slave->mac_control = mac_control;
 711
 712         if (phy->link && cpsw_need_resplit(cpsw))
 713                 cpsw_split_res(cpsw);
 714 }
 715
 716 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 717 {
 718         struct cpsw_common *cpsw = priv->cpsw;
 719         struct phy_device *phy;
 720
 721         cpsw_sl_reset(slave->mac_sl, 100);
 722         cpsw_sl_ctl_reset(slave->mac_sl);
 723
 724         /* setup priority mapping */
 725         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 726                           RX_PRIORITY_MAPPING);
 727
 728         switch (cpsw->version) {
 729         case CPSW_VERSION_1:
 730                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 731                 /* Increase RX FIFO size to 5 for supporting fullduplex
 732                  * flow control mode
 733                  */
 734                 slave_write(slave,
 735                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 736                             CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 737                 break;
 738         case CPSW_VERSION_2:
 739         case CPSW_VERSION_3:
 740         case CPSW_VERSION_4:
 741                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 742                 /* Increase RX FIFO size to 5 for supporting fullduplex
 743                  * flow control mode
 744                  */
 745                 slave_write(slave,
 746                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 747                             CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 748                 break;
 749         }
 750
 751         /* setup max packet size, and mac address */
 752         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 753                           cpsw->rx_packet_max);
 754         cpsw_set_slave_mac(slave, priv);
 755
 756         slave->mac_control = 0; /* no link yet */
 757
 758         if (cpsw_is_switch_en(cpsw))
 759                 cpsw_port_add_switch_def_ale_entries(priv, slave);
 760         else
 761                 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
 762
 763         if (!slave->data->phy_node)
 764                 dev_err(priv->dev, "no phy found on slave %d\n",
 765                         slave->slave_num);
 766         phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 767                              &cpsw_adjust_link, 0, slave->data->phy_if);
 768         if (!phy) {
 769                 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 770                         slave->data->phy_node,
 771                         slave->slave_num);
 772                 return;
 773         }
 774         slave->phy = phy;
 775
 776         phy_attached_info(slave->phy);
 777
 778         phy_start(slave->phy);
 779
 780         /* Configure GMII_SEL register */
 781         phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 782                          slave->data->phy_if);
 783 }
 784
 785 static int cpsw_ndo_stop(struct net_device *ndev)
 786 {
 787         struct cpsw_priv *priv = netdev_priv(ndev);
 788         struct cpsw_common *cpsw = priv->cpsw;
 789         struct cpsw_slave *slave;
 790
 791         cpsw_info(priv, ifdown, "shutting down ndev\n");
 792         slave = &cpsw->slaves[priv->emac_port - 1];
 793         if (slave->phy)
 794                 phy_stop(slave->phy);
 795
 796         netif_tx_stop_all_queues(priv->ndev);
 797
 798         if (slave->phy) {
 799                 phy_disconnect(slave->phy);
 800                 slave->phy = NULL;
 801         }
 802
 803         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 804
 805         if (cpsw->usage_count <= 1) {
 806                 napi_disable(&cpsw->napi_rx);
 807                 napi_disable(&cpsw->napi_tx);
 808                 cpts_unregister(cpsw->cpts);
 809                 cpsw_intr_disable(cpsw);
 810                 cpdma_ctlr_stop(cpsw->dma);
 811                 cpsw_ale_stop(cpsw->ale);
 812                 cpsw_destroy_xdp_rxqs(cpsw);
 813         }
 814
 815         if (cpsw_need_resplit(cpsw))
 816                 cpsw_split_res(cpsw);
 817
 818         cpsw->usage_count--;
 819         pm_runtime_put_sync(cpsw->dev);
 820         return 0;
 821 }
 822
 823 static int cpsw_ndo_open(struct net_device *ndev)
 824 {
 825         struct cpsw_priv *priv = netdev_priv(ndev);
 826         struct cpsw_common *cpsw = priv->cpsw;
 827         int ret;
 828
 829         dev_info(priv->dev, "starting ndev. mode: %s\n",
 830                  cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
 831         ret = pm_runtime_get_sync(cpsw->dev);
 832         if (ret < 0) {
 833                 pm_runtime_put_noidle(cpsw->dev);
 834                 return ret;
 835         }
 836
 837         /* Notify the stack of the actual queue counts. */
 838         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 839         if (ret) {
 840                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 841                 goto pm_cleanup;
 842         }
 843
 844         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 845         if (ret) {
 846                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 847                 goto pm_cleanup;
 848         }
 849
 850         /* Initialize host and slave ports */
 851         if (!cpsw->usage_count)
 852                 cpsw_init_host_port(priv);
 853         cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
 854
 855         /* initialize shared resources for every ndev */
 856         if (!cpsw->usage_count) {
 857                 /* create rxqs for both infs in dual mac as they use same pool
 858                  * and must be destroyed together when no users.
 859                  */
 860                 ret = cpsw_create_xdp_rxqs(cpsw);
 861                 if (ret < 0)
 862                         goto err_cleanup;
 863
 864                 ret = cpsw_fill_rx_channels(priv);
 865                 if (ret < 0)
 866                         goto err_cleanup;
 867
 868                 if (cpsw->cpts) {
 869                         if (cpts_register(cpsw->cpts))
 870                                 dev_err(priv->dev, "error registering cpts device\n");
 871                         else
 872                                 writel(0x10, &cpsw->wr_regs->misc_en);
 873                 }
 874
 875                 napi_enable(&cpsw->napi_rx);
 876                 napi_enable(&cpsw->napi_tx);
 877
 878                 if (cpsw->tx_irq_disabled) {
 879                         cpsw->tx_irq_disabled = false;
 880                         enable_irq(cpsw->irqs_table[1]);
 881                 }
 882
 883                 if (cpsw->rx_irq_disabled) {
 884                         cpsw->rx_irq_disabled = false;
 885                         enable_irq(cpsw->irqs_table[0]);
 886                 }
 887         }
 888
 889         cpsw_restore(priv);
 890
 891         /* Enable Interrupt pacing if configured */
 892         if (cpsw->coal_intvl != 0) {
 893                 struct ethtool_coalesce coal;
 894
 895                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 896                 cpsw_set_coalesce(ndev, &coal);
 897         }
 898
 899         cpdma_ctlr_start(cpsw->dma);
 900         cpsw_intr_enable(cpsw);
 901         cpsw->usage_count++;
 902
 903         return 0;
 904
 905 err_cleanup:
 906         cpsw_ndo_stop(ndev);
 907
 908 pm_cleanup:
 909         pm_runtime_put_sync(cpsw->dev);
 910         return ret;
 911 }
 912
 913 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 914                                        struct net_device *ndev)
 915 {
 916         struct cpsw_priv *priv = netdev_priv(ndev);
 917         struct cpsw_common *cpsw = priv->cpsw;
 918         struct cpts *cpts = cpsw->cpts;
 919         struct netdev_queue *txq;
 920         struct cpdma_chan *txch;
 921         int ret, q_idx;
 922
 923         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 924                 cpsw_err(priv, tx_err, "packet pad failed\n");
 925                 ndev->stats.tx_dropped++;
 926                 return NET_XMIT_DROP;
 927         }
 928
 929         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 930             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 931                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 932
 933         q_idx = skb_get_queue_mapping(skb);
 934         if (q_idx >= cpsw->tx_ch_num)
 935                 q_idx = q_idx % cpsw->tx_ch_num;
 936
 937         txch = cpsw->txv[q_idx].ch;
 938         txq = netdev_get_tx_queue(ndev, q_idx);
 939         skb_tx_timestamp(skb);
 940         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 941                                 priv->emac_port);
 942         if (unlikely(ret != 0)) {
 943                 cpsw_err(priv, tx_err, "desc submit failed\n");
 944                 goto fail;
 945         }
 946
 947         /* If there is no more tx desc left free then we need to
 948          * tell the kernel to stop sending us tx frames.
 949          */
 950         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 951                 netif_tx_stop_queue(txq);
 952
 953                 /* Barrier, so that stop_queue visible to other cpus */
 954                 smp_mb__after_atomic();
 955
 956                 if (cpdma_check_free_tx_desc(txch))
 957                         netif_tx_wake_queue(txq);
 958         }
 959
 960         return NETDEV_TX_OK;
 961 fail:
 962         ndev->stats.tx_dropped++;
 963         netif_tx_stop_queue(txq);
 964
 965         /* Barrier, so that stop_queue visible to other cpus */
 966         smp_mb__after_atomic();
 967
 968         if (cpdma_check_free_tx_desc(txch))
 969                 netif_tx_wake_queue(txq);
 970
 971         return NETDEV_TX_BUSY;
 972 }
 973
 974 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 975 {
 976         struct sockaddr *addr = (struct sockaddr *)p;
 977         struct cpsw_priv *priv = netdev_priv(ndev);
 978         struct cpsw_common *cpsw = priv->cpsw;
 979         int ret, slave_no;
 980         int flags = 0;
 981         u16 vid = 0;
 982
 983         slave_no = cpsw_slave_index(cpsw, priv);
 984         if (!is_valid_ether_addr(addr->sa_data))
 985                 return -EADDRNOTAVAIL;
 986
 987         ret = pm_runtime_get_sync(cpsw->dev);
 988         if (ret < 0) {
 989                 pm_runtime_put_noidle(cpsw->dev);
 990                 return ret;
 991         }
 992
 993         vid = cpsw->slaves[slave_no].port_vlan;
 994         flags = ALE_VLAN | ALE_SECURE;
 995
 996         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 997                            flags, vid);
 998         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
 999                            flags, vid);
1000
1001         ether_addr_copy(priv->mac_addr, addr->sa_data);
1002         ether_addr_copy(ndev->dev_addr, priv->mac_addr);
1003         cpsw_set_slave_mac(&cpsw->slaves[slave_no], priv);
1004
1005         pm_runtime_put(cpsw->dev);
1006
1007         return 0;
1008 }
1009
1010 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1011                                      __be16 proto, u16 vid)
1012 {
1013         struct cpsw_priv *priv = netdev_priv(ndev);
1014         struct cpsw_common *cpsw = priv->cpsw;
1015         int ret;
1016         int i;
1017
1018         if (cpsw_is_switch_en(cpsw)) {
1019                 dev_dbg(cpsw->dev, "ndo del vlan is called in switch mode\n");
1020                 return 0;
1021         }
1022
1023         if (vid == cpsw->data.default_vlan)
1024                 return 0;
1025
1026         ret = pm_runtime_get_sync(cpsw->dev);
1027         if (ret < 0) {
1028                 pm_runtime_put_noidle(cpsw->dev);
1029                 return ret;
1030         }
1031
1032         /* reset the return code as pm_runtime_get_sync() can return
1033          * non zero values as well.
1034          */
1035         ret = 0;
1036         for (i = 0; i < cpsw->data.slaves; i++) {
1037                 if (cpsw->slaves[i].ndev &&
1038                     vid == cpsw->slaves[i].port_vlan) {
1039                         ret = -EINVAL;
1040                         goto err;
1041                 }
1042         }
1043
1044         dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1045         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1046         if (ret)
1047                 dev_err(priv->dev, "cpsw_ale_del_vlan() failed: ret %d\n", ret);
1048         ret = cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1049                                  HOST_PORT_NUM, ALE_VLAN, vid);
1050         if (ret)
1051                 dev_err(priv->dev, "cpsw_ale_del_ucast() failed: ret %d\n",
1052                         ret);
1053         ret = cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1054                                  0, ALE_VLAN, vid);
1055         if (ret)
1056                 dev_err(priv->dev, "cpsw_ale_del_mcast failed. ret %d\n",
1057                         ret);
1058         cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1059         ret = 0;
1060 err:
1061         pm_runtime_put(cpsw->dev);
1062         return ret;
1063 }
1064
1065 static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
1066                                        size_t len)
1067 {
1068         struct cpsw_priv *priv = netdev_priv(ndev);
1069         int err;
1070
1071         err = snprintf(name, len, "p%d", priv->emac_port);
1072
1073         if (err >= len)
1074                 return -EINVAL;
1075
1076         return 0;
1077 }
1078
1079 #ifdef CONFIG_NET_POLL_CONTROLLER
1080 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1081 {
1082         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1083
1084         cpsw_intr_disable(cpsw);
1085         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1086         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1087         cpsw_intr_enable(cpsw);
1088 }
1089 #endif
1090
1091 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1092                              struct xdp_frame **frames, u32 flags)
1093 {
1094         struct cpsw_priv *priv = netdev_priv(ndev);
1095         struct xdp_frame *xdpf;
1096         int i, nxmit = 0;
1097
1098         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1099                 return -EINVAL;
1100
1101         for (i = 0; i < n; i++) {
1102                 xdpf = frames[i];
1103                 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1104                         break;
1105
1106                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
1107                         break;
1108                 nxmit++;
1109         }
1110
1111         return nxmit;
1112 }
1113
1114 static int cpsw_get_port_parent_id(struct net_device *ndev,
1115                                    struct netdev_phys_item_id *ppid)
1116 {
1117         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1118
1119         ppid->id_len = sizeof(cpsw->base_mac);
1120         memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
1121
1122         return 0;
1123 }
1124
1125 static const struct net_device_ops cpsw_netdev_ops = {
1126         .ndo_open               = cpsw_ndo_open,
1127         .ndo_stop               = cpsw_ndo_stop,
1128         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1129         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1130         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1131         .ndo_validate_addr      = eth_validate_addr,
1132         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1133         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1134         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1135 #ifdef CONFIG_NET_POLL_CONTROLLER
1136         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1137 #endif
1138         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1139         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1140         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1141         .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
1142         .ndo_bpf                = cpsw_ndo_bpf,
1143         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1144         .ndo_get_port_parent_id = cpsw_get_port_parent_id,
1145 };
1146
1147 static void cpsw_get_drvinfo(struct net_device *ndev,
1148                              struct ethtool_drvinfo *info)
1149 {
1150         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1151         struct platform_device *pdev;
1152
1153         pdev = to_platform_device(cpsw->dev);
1154         strlcpy(info->driver, "cpsw-switch", sizeof(info->driver));
1155         strlcpy(info->version, "2.0", sizeof(info->version));
1156         strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1157 }
1158
1159 static int cpsw_set_pauseparam(struct net_device *ndev,
1160                                struct ethtool_pauseparam *pause)
1161 {
1162         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1163         struct cpsw_priv *priv = netdev_priv(ndev);
1164         int slave_no;
1165
1166         slave_no = cpsw_slave_index(cpsw, priv);
1167         if (!cpsw->slaves[slave_no].phy)
1168                 return -EINVAL;
1169
1170         if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
1171                 return -EINVAL;
1172
1173         priv->rx_pause = pause->rx_pause ? true : false;
1174         priv->tx_pause = pause->tx_pause ? true : false;
1175
1176         phy_set_asym_pause(cpsw->slaves[slave_no].phy,
1177                            priv->rx_pause, priv->tx_pause);
1178
1179         return 0;
1180 }
1181
1182 static int cpsw_set_channels(struct net_device *ndev,
1183                              struct ethtool_channels *chs)
1184 {
1185         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1186 }
1187
1188 static const struct ethtool_ops cpsw_ethtool_ops = {
1189         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1190         .get_drvinfo            = cpsw_get_drvinfo,
1191         .get_msglevel           = cpsw_get_msglevel,
1192         .set_msglevel           = cpsw_set_msglevel,
1193         .get_link               = ethtool_op_get_link,
1194         .get_ts_info            = cpsw_get_ts_info,
1195         .get_coalesce           = cpsw_get_coalesce,
1196         .set_coalesce           = cpsw_set_coalesce,
1197         .get_sset_count         = cpsw_get_sset_count,
1198         .get_strings            = cpsw_get_strings,
1199         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1200         .get_pauseparam         = cpsw_get_pauseparam,
1201         .set_pauseparam         = cpsw_set_pauseparam,
1202         .get_wol                = cpsw_get_wol,
1203         .set_wol                = cpsw_set_wol,
1204         .get_regs_len           = cpsw_get_regs_len,
1205         .get_regs               = cpsw_get_regs,
1206         .begin                  = cpsw_ethtool_op_begin,
1207         .complete               = cpsw_ethtool_op_complete,
1208         .get_channels           = cpsw_get_channels,
1209         .set_channels           = cpsw_set_channels,
1210         .get_link_ksettings     = cpsw_get_link_ksettings,
1211         .set_link_ksettings     = cpsw_set_link_ksettings,
1212         .get_eee                = cpsw_get_eee,
1213         .set_eee                = cpsw_set_eee,
1214         .nway_reset             = cpsw_nway_reset,
1215         .get_ringparam          = cpsw_get_ringparam,
1216         .set_ringparam          = cpsw_set_ringparam,
1217 };
1218
1219 static int cpsw_probe_dt(struct cpsw_common *cpsw)
1220 {
1221         struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
1222         struct cpsw_platform_data *data = &cpsw->data;
1223         struct device *dev = cpsw->dev;
1224         int ret;
1225         u32 prop;
1226
1227         if (!node)
1228                 return -EINVAL;
1229
1230         tmp_node = of_get_child_by_name(node, "ethernet-ports");
1231         if (!tmp_node)
1232                 return -ENOENT;
1233         data->slaves = of_get_child_count(tmp_node);
1234         if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
1235                 of_node_put(tmp_node);
1236                 return -ENOENT;
1237         }
1238
1239         data->active_slave = 0;
1240         data->channels = CPSW_MAX_QUEUES;
1241         data->dual_emac = true;
1242         data->bd_ram_size = CPSW_BD_RAM_SIZE;
1243         data->mac_control = 0;
1244
1245         data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
1246                                         sizeof(struct cpsw_slave_data),
1247                                         GFP_KERNEL);
1248         if (!data->slave_data)
1249                 return -ENOMEM;
1250
1251         /* Populate all the child nodes here...
1252          */
1253         ret = devm_of_platform_populate(dev);
1254         /* We do not want to force this, as in some cases may not have child */
1255         if (ret)
1256                 dev_warn(dev, "Doesn't have any child node\n");
1257
1258         for_each_child_of_node(tmp_node, port_np) {
1259                 struct cpsw_slave_data *slave_data;
1260                 u32 port_id;
1261
1262                 ret = of_property_read_u32(port_np, "reg", &port_id);
1263                 if (ret < 0) {
1264                         dev_err(dev, "%pOF error reading port_id %d\n",
1265                                 port_np, ret);
1266                         goto err_node_put;
1267                 }
1268
1269                 if (!port_id || port_id > CPSW_SLAVE_PORTS_NUM) {
1270                         dev_err(dev, "%pOF has invalid port_id %u\n",
1271                                 port_np, port_id);
1272                         ret = -EINVAL;
1273                         goto err_node_put;
1274                 }
1275
1276                 slave_data = &data->slave_data[port_id - 1];
1277
1278                 slave_data->disabled = !of_device_is_available(port_np);
1279                 if (slave_data->disabled)
1280                         continue;
1281
1282                 slave_data->slave_node = port_np;
1283                 slave_data->ifphy = devm_of_phy_get(dev, port_np, NULL);
1284                 if (IS_ERR(slave_data->ifphy)) {
1285                         ret = PTR_ERR(slave_data->ifphy);
1286                         dev_err(dev, "%pOF: Error retrieving port phy: %d\n",
1287                                 port_np, ret);
1288                         goto err_node_put;
1289                 }
1290
1291                 if (of_phy_is_fixed_link(port_np)) {
1292                         ret = of_phy_register_fixed_link(port_np);
1293                         if (ret) {
1294                                 if (ret != -EPROBE_DEFER)
1295                                         dev_err(dev, "%pOF failed to register fixed-link phy: %d\n",
1296                                                 port_np, ret);
1297                                 goto err_node_put;
1298                         }
1299                         slave_data->phy_node = of_node_get(port_np);
1300                 } else {
1301                         slave_data->phy_node =
1302                                 of_parse_phandle(port_np, "phy-handle", 0);
1303                 }
1304
1305                 if (!slave_data->phy_node) {
1306                         dev_err(dev, "%pOF no phy found\n", port_np);
1307                         ret = -ENODEV;
1308                         goto err_node_put;
1309                 }
1310
1311                 ret = of_get_phy_mode(port_np, &slave_data->phy_if);
1312                 if (ret) {
1313                         dev_err(dev, "%pOF read phy-mode err %d\n",
1314                                 port_np, ret);
1315                         goto err_node_put;
1316                 }
1317
1318                 ret = of_get_mac_address(port_np, slave_data->mac_addr);
1319                 if (ret) {
1320                         ret = ti_cm_get_macid(dev, port_id - 1,
1321                                               slave_data->mac_addr);
1322                         if (ret)
1323                                 goto err_node_put;
1324                 }
1325
1326                 if (of_property_read_u32(port_np, "ti,dual-emac-pvid",
1327                                          &prop)) {
1328                         dev_err(dev, "%pOF Missing dual_emac_res_vlan in DT.\n",
1329                                 port_np);
1330                         slave_data->dual_emac_res_vlan = port_id;
1331                         dev_err(dev, "%pOF Using %d as Reserved VLAN\n",
1332                                 port_np, slave_data->dual_emac_res_vlan);
1333                 } else {
1334                         slave_data->dual_emac_res_vlan = prop;
1335                 }
1336         }
1337
1338         of_node_put(tmp_node);
1339         return 0;
1340
1341 err_node_put:
1342         of_node_put(port_np);
1343         return ret;
1344 }
1345
1346 static void cpsw_remove_dt(struct cpsw_common *cpsw)
1347 {
1348         struct cpsw_platform_data *data = &cpsw->data;
1349         int i = 0;
1350
1351         for (i = 0; i < cpsw->data.slaves; i++) {
1352                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1353                 struct device_node *port_np = slave_data->phy_node;
1354
1355                 if (port_np) {
1356                         if (of_phy_is_fixed_link(port_np))
1357                                 of_phy_deregister_fixed_link(port_np);
1358
1359                         of_node_put(port_np);
1360                 }
1361         }
1362 }
1363
1364 static int cpsw_create_ports(struct cpsw_common *cpsw)
1365 {
1366         struct cpsw_platform_data *data = &cpsw->data;
1367         struct net_device *ndev, *napi_ndev = NULL;
1368         struct device *dev = cpsw->dev;
1369         struct cpsw_priv *priv;
1370         int ret = 0, i = 0;
1371
1372         for (i = 0; i < cpsw->data.slaves; i++) {
1373                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1374
1375                 if (slave_data->disabled)
1376                         continue;
1377
1378                 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1379                                                CPSW_MAX_QUEUES,
1380                                                CPSW_MAX_QUEUES);
1381                 if (!ndev) {
1382                         dev_err(dev, "error allocating net_device\n");
1383                         return -ENOMEM;
1384                 }
1385
1386                 priv = netdev_priv(ndev);
1387                 priv->cpsw = cpsw;
1388                 priv->ndev = ndev;
1389                 priv->dev  = dev;
1390                 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1391                 priv->emac_port = i + 1;
1392
1393                 if (is_valid_ether_addr(slave_data->mac_addr)) {
1394                         ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1395                         dev_info(cpsw->dev, "Detected MACID = %pM\n",
1396                                  priv->mac_addr);
1397                 } else {
1398                         eth_random_addr(slave_data->mac_addr);
1399                         dev_info(cpsw->dev, "Random MACID = %pM\n",
1400                                  priv->mac_addr);
1401                 }
1402                 ether_addr_copy(ndev->dev_addr, slave_data->mac_addr);
1403                 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1404
1405                 cpsw->slaves[i].ndev = ndev;
1406
1407                 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1408                                   NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL;
1409
1410                 ndev->netdev_ops = &cpsw_netdev_ops;
1411                 ndev->ethtool_ops = &cpsw_ethtool_ops;
1412                 SET_NETDEV_DEV(ndev, dev);
1413
1414                 if (!napi_ndev) {
1415                         /* CPSW Host port CPDMA interface is shared between
1416                          * ports and there is only one TX and one RX IRQs
1417                          * available for all possible TX and RX channels
1418                          * accordingly.
1419                          */
1420                         netif_napi_add(ndev, &cpsw->napi_rx,
1421                                        cpsw->quirk_irq ?
1422                                        cpsw_rx_poll : cpsw_rx_mq_poll,
1423                                        CPSW_POLL_WEIGHT);
1424                         netif_tx_napi_add(ndev, &cpsw->napi_tx,
1425                                           cpsw->quirk_irq ?
1426                                           cpsw_tx_poll : cpsw_tx_mq_poll,
1427                                           CPSW_POLL_WEIGHT);
1428                 }
1429
1430                 napi_ndev = ndev;
1431         }
1432
1433         return ret;
1434 }
1435
1436 static void cpsw_unregister_ports(struct cpsw_common *cpsw)
1437 {
1438         int i = 0;
1439
1440         for (i = 0; i < cpsw->data.slaves; i++) {
1441                 if (!cpsw->slaves[i].ndev)
1442                         continue;
1443
1444                 unregister_netdev(cpsw->slaves[i].ndev);
1445         }
1446 }
1447
1448 static int cpsw_register_ports(struct cpsw_common *cpsw)
1449 {
1450         int ret = 0, i = 0;
1451
1452         for (i = 0; i < cpsw->data.slaves; i++) {
1453                 if (!cpsw->slaves[i].ndev)
1454                         continue;
1455
1456                 /* register the network device */
1457                 ret = register_netdev(cpsw->slaves[i].ndev);
1458                 if (ret) {
1459                         dev_err(cpsw->dev,
1460                                 "cpsw: err registering net device%d\n", i);
1461                         cpsw->slaves[i].ndev = NULL;
1462                         break;
1463                 }
1464         }
1465
1466         if (ret)
1467                 cpsw_unregister_ports(cpsw);
1468         return ret;
1469 }
1470
1471 bool cpsw_port_dev_check(const struct net_device *ndev)
1472 {
1473         if (ndev->netdev_ops == &cpsw_netdev_ops) {
1474                 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1475
1476                 return !cpsw->data.dual_emac;
1477         }
1478
1479         return false;
1480 }
1481
1482 static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
1483 {
1484         int set_val = 0;
1485         int i;
1486
1487         if (!cpsw->ale_bypass &&
1488             (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
1489                 set_val = 1;
1490
1491         dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
1492
1493         for (i = 0; i < cpsw->data.slaves; i++) {
1494                 struct net_device *sl_ndev = cpsw->slaves[i].ndev;
1495                 struct cpsw_priv *priv = netdev_priv(sl_ndev);
1496
1497                 priv->offload_fwd_mark = set_val;
1498         }
1499 }
1500
1501 static int cpsw_netdevice_port_link(struct net_device *ndev,
1502                                     struct net_device *br_ndev)
1503 {
1504         struct cpsw_priv *priv = netdev_priv(ndev);
1505         struct cpsw_common *cpsw = priv->cpsw;
1506
1507         if (!cpsw->br_members) {
1508                 cpsw->hw_bridge_dev = br_ndev;
1509         } else {
1510                 /* This is adding the port to a second bridge, this is
1511                  * unsupported
1512                  */
1513                 if (cpsw->hw_bridge_dev != br_ndev)
1514                         return -EOPNOTSUPP;
1515         }
1516
1517         cpsw->br_members |= BIT(priv->emac_port);
1518
1519         cpsw_port_offload_fwd_mark_update(cpsw);
1520
1521         return NOTIFY_DONE;
1522 }
1523
1524 static void cpsw_netdevice_port_unlink(struct net_device *ndev)
1525 {
1526         struct cpsw_priv *priv = netdev_priv(ndev);
1527         struct cpsw_common *cpsw = priv->cpsw;
1528
1529         cpsw->br_members &= ~BIT(priv->emac_port);
1530
1531         cpsw_port_offload_fwd_mark_update(cpsw);
1532
1533         if (!cpsw->br_members)
1534                 cpsw->hw_bridge_dev = NULL;
1535 }
1536
1537 /* netdev notifier */
1538 static int cpsw_netdevice_event(struct notifier_block *unused,
1539                                 unsigned long event, void *ptr)
1540 {
1541         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
1542         struct netdev_notifier_changeupper_info *info;
1543         int ret = NOTIFY_DONE;
1544
1545         if (!cpsw_port_dev_check(ndev))
1546                 return NOTIFY_DONE;
1547
1548         switch (event) {
1549         case NETDEV_CHANGEUPPER:
1550                 info = ptr;
1551
1552                 if (netif_is_bridge_master(info->upper_dev)) {
1553                         if (info->linking)
1554                                 ret = cpsw_netdevice_port_link(ndev,
1555                                                                info->upper_dev);
1556                         else
1557                                 cpsw_netdevice_port_unlink(ndev);
1558                 }
1559                 break;
1560         default:
1561                 return NOTIFY_DONE;
1562         }
1563
1564         return notifier_from_errno(ret);
1565 }
1566
1567 static struct notifier_block cpsw_netdevice_nb __read_mostly = {
1568         .notifier_call = cpsw_netdevice_event,
1569 };
1570
1571 static int cpsw_register_notifiers(struct cpsw_common *cpsw)
1572 {
1573         int ret = 0;
1574
1575         ret = register_netdevice_notifier(&cpsw_netdevice_nb);
1576         if (ret) {
1577                 dev_err(cpsw->dev, "can't register netdevice notifier\n");
1578                 return ret;
1579         }
1580
1581         ret = cpsw_switchdev_register_notifiers(cpsw);
1582         if (ret)
1583                 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1584
1585         return ret;
1586 }
1587
1588 static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
1589 {
1590         cpsw_switchdev_unregister_notifiers(cpsw);
1591         unregister_netdevice_notifier(&cpsw_netdevice_nb);
1592 }
1593
1594 static const struct devlink_ops cpsw_devlink_ops = {
1595 };
1596
1597 static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
1598                                    struct devlink_param_gset_ctx *ctx)
1599 {
1600         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1601         struct cpsw_common *cpsw = dl_priv->cpsw;
1602
1603         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1604
1605         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1606                 return  -EOPNOTSUPP;
1607
1608         ctx->val.vbool = !cpsw->data.dual_emac;
1609
1610         return 0;
1611 }
1612
1613 static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
1614                                    struct devlink_param_gset_ctx *ctx)
1615 {
1616         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1617         struct cpsw_common *cpsw = dl_priv->cpsw;
1618         int vlan = cpsw->data.default_vlan;
1619         bool switch_en = ctx->val.vbool;
1620         bool if_running = false;
1621         int i;
1622
1623         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1624
1625         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1626                 return  -EOPNOTSUPP;
1627
1628         if (switch_en == !cpsw->data.dual_emac)
1629                 return 0;
1630
1631         if (!switch_en && cpsw->br_members) {
1632                 dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
1633                 return -EINVAL;
1634         }
1635
1636         rtnl_lock();
1637
1638         for (i = 0; i < cpsw->data.slaves; i++) {
1639                 struct cpsw_slave *slave = &cpsw->slaves[i];
1640                 struct net_device *sl_ndev = slave->ndev;
1641
1642                 if (!sl_ndev || !netif_running(sl_ndev))
1643                         continue;
1644
1645                 if_running = true;
1646         }
1647
1648         if (!if_running) {
1649                 /* all ndevs are down */
1650                 cpsw->data.dual_emac = !switch_en;
1651                 for (i = 0; i < cpsw->data.slaves; i++) {
1652                         struct cpsw_slave *slave = &cpsw->slaves[i];
1653                         struct net_device *sl_ndev = slave->ndev;
1654
1655                         if (!sl_ndev)
1656                                 continue;
1657
1658                         if (switch_en)
1659                                 vlan = cpsw->data.default_vlan;
1660                         else
1661                                 vlan = slave->data->dual_emac_res_vlan;
1662                         slave->port_vlan = vlan;
1663                 }
1664                 goto exit;
1665         }
1666
1667         if (switch_en) {
1668                 dev_info(cpsw->dev, "Enable switch mode\n");
1669
1670                 /* enable bypass - no forwarding; all traffic goes to Host */
1671                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1672
1673                 /* clean up ALE table */
1674                 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1675                 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1676
1677                 cpsw_init_host_port_switch(cpsw);
1678
1679                 for (i = 0; i < cpsw->data.slaves; i++) {
1680                         struct cpsw_slave *slave = &cpsw->slaves[i];
1681                         struct net_device *sl_ndev = slave->ndev;
1682                         struct cpsw_priv *priv;
1683
1684                         if (!sl_ndev)
1685                                 continue;
1686
1687                         priv = netdev_priv(sl_ndev);
1688                         slave->port_vlan = vlan;
1689                         if (netif_running(sl_ndev))
1690                                 cpsw_port_add_switch_def_ale_entries(priv,
1691                                                                      slave);
1692                 }
1693
1694                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1695                 cpsw->data.dual_emac = false;
1696         } else {
1697                 dev_info(cpsw->dev, "Disable switch mode\n");
1698
1699                 /* enable bypass - no forwarding; all traffic goes to Host */
1700                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1701
1702                 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1703                 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1704
1705                 cpsw_init_host_port_dual_mac(cpsw);
1706
1707                 for (i = 0; i < cpsw->data.slaves; i++) {
1708                         struct cpsw_slave *slave = &cpsw->slaves[i];
1709                         struct net_device *sl_ndev = slave->ndev;
1710                         struct cpsw_priv *priv;
1711
1712                         if (!sl_ndev)
1713                                 continue;
1714
1715                         priv = netdev_priv(slave->ndev);
1716                         slave->port_vlan = slave->data->dual_emac_res_vlan;
1717                         cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
1718                 }
1719
1720                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1721                 cpsw->data.dual_emac = true;
1722         }
1723 exit:
1724         rtnl_unlock();
1725
1726         return 0;
1727 }
1728
1729 static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
1730                                 struct devlink_param_gset_ctx *ctx)
1731 {
1732         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1733         struct cpsw_common *cpsw = dl_priv->cpsw;
1734
1735         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1736
1737         switch (id) {
1738         case CPSW_DL_PARAM_ALE_BYPASS:
1739                 ctx->val.vbool = cpsw_ale_control_get(cpsw->ale, 0, ALE_BYPASS);
1740                 break;
1741         default:
1742                 return -EOPNOTSUPP;
1743         }
1744
1745         return 0;
1746 }
1747
1748 static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
1749                                 struct devlink_param_gset_ctx *ctx)
1750 {
1751         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1752         struct cpsw_common *cpsw = dl_priv->cpsw;
1753         int ret = -EOPNOTSUPP;
1754
1755         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1756
1757         switch (id) {
1758         case CPSW_DL_PARAM_ALE_BYPASS:
1759                 ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
1760                                            ctx->val.vbool);
1761                 if (!ret) {
1762                         cpsw->ale_bypass = ctx->val.vbool;
1763                         cpsw_port_offload_fwd_mark_update(cpsw);
1764                 }
1765                 break;
1766         default:
1767                 return -EOPNOTSUPP;
1768         }
1769
1770         return 0;
1771 }
1772
1773 static const struct devlink_param cpsw_devlink_params[] = {
1774         DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_SWITCH_MODE,
1775                              "switch_mode", DEVLINK_PARAM_TYPE_BOOL,
1776                              BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1777                              cpsw_dl_switch_mode_get, cpsw_dl_switch_mode_set,
1778                              NULL),
1779         DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
1780                              "ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
1781                              BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1782                              cpsw_dl_ale_ctrl_get, cpsw_dl_ale_ctrl_set, NULL),
1783 };
1784
1785 static int cpsw_register_devlink(struct cpsw_common *cpsw)
1786 {
1787         struct device *dev = cpsw->dev;
1788         struct cpsw_devlink *dl_priv;
1789         int ret = 0;
1790
1791         cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv));
1792         if (!cpsw->devlink)
1793                 return -ENOMEM;
1794
1795         dl_priv = devlink_priv(cpsw->devlink);
1796         dl_priv->cpsw = cpsw;
1797
1798         ret = devlink_register(cpsw->devlink, dev);
1799         if (ret) {
1800                 dev_err(dev, "DL reg fail ret:%d\n", ret);
1801                 goto dl_free;
1802         }
1803
1804         ret = devlink_params_register(cpsw->devlink, cpsw_devlink_params,
1805                                       ARRAY_SIZE(cpsw_devlink_params));
1806         if (ret) {
1807                 dev_err(dev, "DL params reg fail ret:%d\n", ret);
1808                 goto dl_unreg;
1809         }
1810
1811         devlink_params_publish(cpsw->devlink);
1812         return ret;
1813
1814 dl_unreg:
1815         devlink_unregister(cpsw->devlink);
1816 dl_free:
1817         devlink_free(cpsw->devlink);
1818         return ret;
1819 }
1820
1821 static void cpsw_unregister_devlink(struct cpsw_common *cpsw)
1822 {
1823         devlink_params_unpublish(cpsw->devlink);
1824         devlink_params_unregister(cpsw->devlink, cpsw_devlink_params,
1825                                   ARRAY_SIZE(cpsw_devlink_params));
1826         devlink_unregister(cpsw->devlink);
1827         devlink_free(cpsw->devlink);
1828 }
1829
1830 static const struct of_device_id cpsw_of_mtable[] = {
1831         { .compatible = "ti,cpsw-switch"},
1832         { .compatible = "ti,am335x-cpsw-switch"},
1833         { .compatible = "ti,am4372-cpsw-switch"},
1834         { .compatible = "ti,dra7-cpsw-switch"},
1835         { /* sentinel */ },
1836 };
1837 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1838
1839 static const struct soc_device_attribute cpsw_soc_devices[] = {
1840         { .family = "AM33xx", .revision = "ES1.0"},
1841         { /* sentinel */ }
1842 };
1843
1844 static int cpsw_probe(struct platform_device *pdev)
1845 {
1846         const struct soc_device_attribute *soc;
1847         struct device *dev = &pdev->dev;
1848         struct cpsw_common *cpsw;
1849         struct resource *ss_res;
1850         struct gpio_descs *mode;
1851         void __iomem *ss_regs;
1852         int ret = 0, ch;
1853         struct clk *clk;
1854         int irq;
1855
1856         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1857         if (!cpsw)
1858                 return -ENOMEM;
1859
1860         cpsw_slave_index = cpsw_slave_index_priv;
1861
1862         cpsw->dev = dev;
1863
1864         cpsw->slaves = devm_kcalloc(dev,
1865                                     CPSW_SLAVE_PORTS_NUM,
1866                                     sizeof(struct cpsw_slave),
1867                                     GFP_KERNEL);
1868         if (!cpsw->slaves)
1869                 return -ENOMEM;
1870
1871         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1872         if (IS_ERR(mode)) {
1873                 ret = PTR_ERR(mode);
1874                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1875                 return ret;
1876         }
1877
1878         clk = devm_clk_get(dev, "fck");
1879         if (IS_ERR(clk)) {
1880                 ret = PTR_ERR(clk);
1881                 dev_err(dev, "fck is not found %d\n", ret);
1882                 return ret;
1883         }
1884         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1885
1886         ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1887         if (IS_ERR(ss_regs)) {
1888                 ret = PTR_ERR(ss_regs);
1889                 return ret;
1890         }
1891         cpsw->regs = ss_regs;
1892
1893         irq = platform_get_irq_byname(pdev, "rx");
1894         if (irq < 0)
1895                 return irq;
1896         cpsw->irqs_table[0] = irq;
1897
1898         irq = platform_get_irq_byname(pdev, "tx");
1899         if (irq < 0)
1900                 return irq;
1901         cpsw->irqs_table[1] = irq;
1902
1903         irq = platform_get_irq_byname(pdev, "misc");
1904         if (irq <= 0)
1905                 return irq;
1906         cpsw->misc_irq = irq;
1907
1908         platform_set_drvdata(pdev, cpsw);
1909         /* This may be required here for child devices. */
1910         pm_runtime_enable(dev);
1911
1912         /* Need to enable clocks with runtime PM api to access module
1913          * registers
1914          */
1915         ret = pm_runtime_get_sync(dev);
1916         if (ret < 0) {
1917                 pm_runtime_put_noidle(dev);
1918                 pm_runtime_disable(dev);
1919                 return ret;
1920         }
1921
1922         ret = cpsw_probe_dt(cpsw);
1923         if (ret)
1924                 goto clean_dt_ret;
1925
1926         soc = soc_device_match(cpsw_soc_devices);
1927         if (soc)
1928                 cpsw->quirk_irq = true;
1929
1930         cpsw->rx_packet_max = rx_packet_max;
1931         cpsw->descs_pool_size = descs_pool_size;
1932         eth_random_addr(cpsw->base_mac);
1933
1934         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1935                                (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
1936                                descs_pool_size);
1937         if (ret)
1938                 goto clean_dt_ret;
1939
1940         cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
1941                         ss_regs + CPSW1_WR_OFFSET :
1942                         ss_regs + CPSW2_WR_OFFSET;
1943
1944         ch = cpsw->quirk_irq ? 0 : 7;
1945         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1946         if (IS_ERR(cpsw->txv[0].ch)) {
1947                 dev_err(dev, "error initializing tx dma channel\n");
1948                 ret = PTR_ERR(cpsw->txv[0].ch);
1949                 goto clean_cpts;
1950         }
1951
1952         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1953         if (IS_ERR(cpsw->rxv[0].ch)) {
1954                 dev_err(dev, "error initializing rx dma channel\n");
1955                 ret = PTR_ERR(cpsw->rxv[0].ch);
1956                 goto clean_cpts;
1957         }
1958         cpsw_split_res(cpsw);
1959
1960         /* setup netdevs */
1961         ret = cpsw_create_ports(cpsw);
1962         if (ret)
1963                 goto clean_unregister_netdev;
1964
1965         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1966          * MISC IRQs which are always kept disabled with this driver so
1967          * we will not request them.
1968          *
1969          * If anyone wants to implement support for those, make sure to
1970          * first request and append them to irqs_table array.
1971          */
1972
1973         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1974                                0, dev_name(dev), cpsw);
1975         if (ret < 0) {
1976                 dev_err(dev, "error attaching irq (%d)\n", ret);
1977                 goto clean_unregister_netdev;
1978         }
1979
1980         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1981                                0, dev_name(dev), cpsw);
1982         if (ret < 0) {
1983                 dev_err(dev, "error attaching irq (%d)\n", ret);
1984                 goto clean_unregister_netdev;
1985         }
1986
1987         if (!cpsw->cpts)
1988                 goto skip_cpts;
1989
1990         ret = devm_request_irq(dev, cpsw->misc_irq, cpsw_misc_interrupt,
1991                                0, dev_name(&pdev->dev), cpsw);
1992         if (ret < 0) {
1993                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1994                 goto clean_unregister_netdev;
1995         }
1996
1997         /* Enable misc CPTS evnt_pend IRQ */
1998         cpts_set_irqpoll(cpsw->cpts, false);
1999
2000 skip_cpts:
2001         ret = cpsw_register_notifiers(cpsw);
2002         if (ret)
2003                 goto clean_unregister_netdev;
2004
2005         ret = cpsw_register_devlink(cpsw);
2006         if (ret)
2007                 goto clean_unregister_notifiers;
2008
2009         ret = cpsw_register_ports(cpsw);
2010         if (ret)
2011                 goto clean_unregister_notifiers;
2012
2013         dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
2014                    &ss_res->start, descs_pool_size,
2015                    cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
2016                    CPSW_MINOR_VERSION(cpsw->version),
2017                    CPSW_RTL_VERSION(cpsw->version));
2018
2019         pm_runtime_put(dev);
2020
2021         return 0;
2022
2023 clean_unregister_notifiers:
2024         cpsw_unregister_notifiers(cpsw);
2025 clean_unregister_netdev:
2026         cpsw_unregister_ports(cpsw);
2027 clean_cpts:
2028         cpts_release(cpsw->cpts);
2029         cpdma_ctlr_destroy(cpsw->dma);
2030 clean_dt_ret:
2031         cpsw_remove_dt(cpsw);
2032         pm_runtime_put_sync(dev);
2033         pm_runtime_disable(dev);
2034         return ret;
2035 }
2036
2037 static int cpsw_remove(struct platform_device *pdev)
2038 {
2039         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
2040         int ret;
2041
2042         ret = pm_runtime_get_sync(&pdev->dev);
2043         if (ret < 0) {
2044                 pm_runtime_put_noidle(&pdev->dev);
2045                 return ret;
2046         }
2047
2048         cpsw_unregister_notifiers(cpsw);
2049         cpsw_unregister_devlink(cpsw);
2050         cpsw_unregister_ports(cpsw);
2051
2052         cpts_release(cpsw->cpts);
2053         cpdma_ctlr_destroy(cpsw->dma);
2054         cpsw_remove_dt(cpsw);
2055         pm_runtime_put_sync(&pdev->dev);
2056         pm_runtime_disable(&pdev->dev);
2057         return 0;
2058 }
2059
2060 static int __maybe_unused cpsw_suspend(struct device *dev)
2061 {
2062         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2063         int i;
2064
2065         rtnl_lock();
2066
2067         for (i = 0; i < cpsw->data.slaves; i++) {
2068                 struct net_device *ndev = cpsw->slaves[i].ndev;
2069
2070                 if (!(ndev && netif_running(ndev)))
2071                         continue;
2072
2073                 cpsw_ndo_stop(ndev);
2074         }
2075
2076         rtnl_unlock();
2077
2078         /* Select sleep pin state */
2079         pinctrl_pm_select_sleep_state(dev);
2080
2081         return 0;
2082 }
2083
2084 static int __maybe_unused cpsw_resume(struct device *dev)
2085 {
2086         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2087         int i;
2088
2089         /* Select default pin state */
2090         pinctrl_pm_select_default_state(dev);
2091
2092         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
2093         rtnl_lock();
2094
2095         for (i = 0; i < cpsw->data.slaves; i++) {
2096                 struct net_device *ndev = cpsw->slaves[i].ndev;
2097
2098                 if (!(ndev && netif_running(ndev)))
2099                         continue;
2100
2101                 cpsw_ndo_open(ndev);
2102         }
2103
2104         rtnl_unlock();
2105
2106         return 0;
2107 }
2108
2109 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2110
2111 static struct platform_driver cpsw_driver = {
2112         .driver = {
2113                 .name    = "cpsw-switch",
2114                 .pm      = &cpsw_pm_ops,
2115                 .of_match_table = cpsw_of_mtable,
2116         },
2117         .probe = cpsw_probe,
2118         .remove = cpsw_remove,
2119 };
2120
2121 module_platform_driver(cpsw_driver);
2122
2123 MODULE_LICENSE("GPL");
2124 MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");