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                 if (status & CPDMA_RX_VLAN_ENCAP) {
 339                         xdp.data = pa + CPSW_HEADROOM +
 340                                    CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 341                         xdp.data_end = xdp.data + len -
 342                                        CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 343                 } else {
 344                         xdp.data = pa + CPSW_HEADROOM;
 345                         xdp.data_end = xdp.data + len;
 346                 }
 347
 348                 xdp_set_data_meta_invalid(&xdp);
 349
 350                 xdp.data_hard_start = pa;
 351                 xdp.rxq = &priv->xdp_rxq[ch];
 352                 xdp.frame_sz = PAGE_SIZE;
 353
 354                 ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port);
 355                 if (ret != CPSW_XDP_PASS)
 356                         goto requeue;
 357
 358                 /* XDP prog might have changed packet data and boundaries */
 359                 len = xdp.data_end - xdp.data;
 360                 headroom = xdp.data - xdp.data_hard_start;
 361
 362                 /* XDP prog can modify vlan tag, so can't use encap header */
 363                 status &= ~CPDMA_RX_VLAN_ENCAP;
 364         }
 365
 366         /* pass skb to netstack if no XDP prog or returned XDP_PASS */
 367         skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 368         if (!skb) {
 369                 ndev->stats.rx_dropped++;
 370                 page_pool_recycle_direct(pool, page);
 371                 goto requeue;
 372         }
 373
 374         skb->offload_fwd_mark = priv->offload_fwd_mark;
 375         skb_reserve(skb, headroom);
 376         skb_put(skb, len);
 377         skb->dev = ndev;
 378         if (status & CPDMA_RX_VLAN_ENCAP)
 379                 cpsw_rx_vlan_encap(skb);
 380         if (priv->rx_ts_enabled)
 381                 cpts_rx_timestamp(cpsw->cpts, skb);
 382         skb->protocol = eth_type_trans(skb, ndev);
 383
 384         /* unmap page as no netstack skb page recycling */
 385         page_pool_release_page(pool, page);
 386         netif_receive_skb(skb);
 387
 388         ndev->stats.rx_bytes += len;
 389         ndev->stats.rx_packets++;
 390
 391 requeue:
 392         xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 393         xmeta->ndev = ndev;
 394         xmeta->ch = ch;
 395
 396         dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
 397         ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 398                                        pkt_size, 0);
 399         if (ret < 0) {
 400                 WARN_ON(ret == -ENOMEM);
 401                 page_pool_recycle_direct(pool, new_page);
 402         }
 403 }
 404
 405 static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 406                                    unsigned short vid)
 407 {
 408         struct cpsw_common *cpsw = priv->cpsw;
 409         int unreg_mcast_mask = 0;
 410         int mcast_mask;
 411         u32 port_mask;
 412         int ret;
 413
 414         port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
 415
 416         mcast_mask = ALE_PORT_HOST;
 417         if (priv->ndev->flags & IFF_ALLMULTI)
 418                 unreg_mcast_mask = mcast_mask;
 419
 420         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
 421                                 unreg_mcast_mask);
 422         if (ret != 0)
 423                 return ret;
 424
 425         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 426                                  HOST_PORT_NUM, ALE_VLAN, vid);
 427         if (ret != 0)
 428                 goto clean_vid;
 429
 430         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 431                                  mcast_mask, ALE_VLAN, vid, 0);
 432         if (ret != 0)
 433                 goto clean_vlan_ucast;
 434         return 0;
 435
 436 clean_vlan_ucast:
 437         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
 438                            HOST_PORT_NUM, ALE_VLAN, vid);
 439 clean_vid:
 440         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
 441         return ret;
 442 }
 443
 444 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
 445                                     __be16 proto, u16 vid)
 446 {
 447         struct cpsw_priv *priv = netdev_priv(ndev);
 448         struct cpsw_common *cpsw = priv->cpsw;
 449         int ret, i;
 450
 451         if (cpsw_is_switch_en(cpsw)) {
 452                 dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
 453                 return 0;
 454         }
 455
 456         if (vid == cpsw->data.default_vlan)
 457                 return 0;
 458
 459         ret = pm_runtime_get_sync(cpsw->dev);
 460         if (ret < 0) {
 461                 pm_runtime_put_noidle(cpsw->dev);
 462                 return ret;
 463         }
 464
 465         /* In dual EMAC, reserved VLAN id should not be used for
 466          * creating VLAN interfaces as this can break the dual
 467          * EMAC port separation
 468          */
 469         for (i = 0; i < cpsw->data.slaves; i++) {
 470                 if (cpsw->slaves[i].ndev &&
 471                     vid == cpsw->slaves[i].port_vlan) {
 472                         ret = -EINVAL;
 473                         goto err;
 474                 }
 475         }
 476
 477         dev_dbg(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
 478         ret = cpsw_add_vlan_ale_entry(priv, vid);
 479 err:
 480         pm_runtime_put(cpsw->dev);
 481         return ret;
 482 }
 483
 484 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 485 {
 486         struct cpsw_priv *priv = arg;
 487
 488         if (!vdev || !vid)
 489                 return 0;
 490
 491         cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 492         return 0;
 493 }
 494
 495 /* restore resources after port reset */
 496 static void cpsw_restore(struct cpsw_priv *priv)
 497 {
 498         struct cpsw_common *cpsw = priv->cpsw;
 499
 500         /* restore vlan configurations */
 501         vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 502
 503         /* restore MQPRIO offload */
 504         cpsw_mqprio_resume(&cpsw->slaves[priv->emac_port - 1], priv);
 505
 506         /* restore CBS offload */
 507         cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
 508 }
 509
 510 static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
 511 {
 512         char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
 513
 514         cpsw_ale_add_mcast(cpsw->ale, stpa,
 515                            ALE_PORT_HOST, ALE_SUPER, 0,
 516                            ALE_MCAST_BLOCK_LEARN_FWD);
 517 }
 518
 519 static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
 520 {
 521         int vlan = cpsw->data.default_vlan;
 522
 523         writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
 524
 525         writel(vlan, &cpsw->host_port_regs->port_vlan);
 526
 527         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 528                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 529                           ALE_PORT_1 | ALE_PORT_2);
 530
 531         cpsw_init_stp_ale_entry(cpsw);
 532
 533         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
 534         dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
 535         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
 536 }
 537
 538 static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
 539 {
 540         int vlan = cpsw->data.default_vlan;
 541
 542         writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
 543
 544         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
 545         dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
 546
 547         writel(vlan, &cpsw->host_port_regs->port_vlan);
 548
 549         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 550         /* learning make no sense in dual_mac mode */
 551         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
 552 }
 553
 554 static void cpsw_init_host_port(struct cpsw_priv *priv)
 555 {
 556         struct cpsw_common *cpsw = priv->cpsw;
 557         u32 control_reg;
 558
 559         /* soft reset the controller and initialize ale */
 560         soft_reset("cpsw", &cpsw->regs->soft_reset);
 561         cpsw_ale_start(cpsw->ale);
 562
 563         /* switch to vlan unaware mode */
 564         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 565                              CPSW_ALE_VLAN_AWARE);
 566         control_reg = readl(&cpsw->regs->control);
 567         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 568         writel(control_reg, &cpsw->regs->control);
 569
 570         /* setup host port priority mapping */
 571         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 572                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 573         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 574
 575         /* disable priority elevation */
 576         writel_relaxed(0, &cpsw->regs->ptype);
 577
 578         /* enable statistics collection only on all ports */
 579         writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 580
 581         /* Enable internal fifo flow control */
 582         writel(0x7, &cpsw->regs->flow_control);
 583
 584         if (cpsw_is_switch_en(cpsw))
 585                 cpsw_init_host_port_switch(cpsw);
 586         else
 587                 cpsw_init_host_port_dual_mac(cpsw);
 588
 589         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 590                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 591 }
 592
 593 static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
 594                                                     struct cpsw_slave *slave)
 595 {
 596         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 597         struct cpsw_common *cpsw = priv->cpsw;
 598         u32 reg;
 599
 600         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 601                CPSW2_PORT_VLAN;
 602         slave_write(slave, slave->port_vlan, reg);
 603
 604         cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 605                           port_mask, port_mask, 0);
 606         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 607                            ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
 608                            ALE_MCAST_FWD);
 609         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 610                            HOST_PORT_NUM, ALE_VLAN |
 611                            ALE_SECURE, slave->port_vlan);
 612         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 613                              ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 614         /* learning make no sense in dual_mac mode */
 615         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 616                              ALE_PORT_NOLEARN, 1);
 617 }
 618
 619 static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
 620                                                  struct cpsw_slave *slave)
 621 {
 622         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 623         struct cpsw_common *cpsw = priv->cpsw;
 624         u32 reg;
 625
 626         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 627                              ALE_PORT_DROP_UNKNOWN_VLAN, 0);
 628         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 629                              ALE_PORT_NOLEARN, 0);
 630         /* disabling SA_UPDATE required to make stp work, without this setting
 631          * Host MAC addresses will jump between ports.
 632          * As per TRM MAC address can be defined as unicast supervisory (super)
 633          * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
 634          * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
 635          * causes STP packets to be dropped due to ingress filter
 636          *      if (source address found) and (secure) and
 637          *         (receive port number != port_number))
 638          *         then discard the packet
 639          */
 640         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 641                              ALE_PORT_NO_SA_UPDATE, 1);
 642
 643         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 644                            port_mask, ALE_VLAN, slave->port_vlan,
 645                            ALE_MCAST_FWD_2);
 646         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 647                            HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
 648
 649         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 650                CPSW2_PORT_VLAN;
 651         slave_write(slave, slave->port_vlan, reg);
 652 }
 653
 654 static void cpsw_adjust_link(struct net_device *ndev)
 655 {
 656         struct cpsw_priv *priv = netdev_priv(ndev);
 657         struct cpsw_common *cpsw = priv->cpsw;
 658         struct cpsw_slave *slave;
 659         struct phy_device *phy;
 660         u32 mac_control = 0;
 661
 662         slave = &cpsw->slaves[priv->emac_port - 1];
 663         phy = slave->phy;
 664
 665         if (!phy)
 666                 return;
 667
 668         if (phy->link) {
 669                 mac_control = CPSW_SL_CTL_GMII_EN;
 670
 671                 if (phy->speed == 1000)
 672                         mac_control |= CPSW_SL_CTL_GIG;
 673                 if (phy->duplex)
 674                         mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 675
 676                 /* set speed_in input in case RMII mode is used in 100Mbps */
 677                 if (phy->speed == 100)
 678                         mac_control |= CPSW_SL_CTL_IFCTL_A;
 679                 /* in band mode only works in 10Mbps RGMII mode */
 680                 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 681                         mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 682
 683                 if (priv->rx_pause)
 684                         mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 685
 686                 if (priv->tx_pause)
 687                         mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 688
 689                 if (mac_control != slave->mac_control)
 690                         cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 691
 692                 /* enable forwarding */
 693                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 694                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 695
 696                 netif_tx_wake_all_queues(ndev);
 697
 698                 if (priv->shp_cfg_speed &&
 699                     priv->shp_cfg_speed != slave->phy->speed &&
 700                     !cpsw_shp_is_off(priv))
 701                         dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
 702         } else {
 703                 netif_tx_stop_all_queues(ndev);
 704
 705                 mac_control = 0;
 706                 /* disable forwarding */
 707                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 708                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 709
 710                 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 711
 712                 cpsw_sl_ctl_reset(slave->mac_sl);
 713         }
 714
 715         if (mac_control != slave->mac_control)
 716                 phy_print_status(phy);
 717
 718         slave->mac_control = mac_control;
 719
 720         if (phy->link && cpsw_need_resplit(cpsw))
 721                 cpsw_split_res(cpsw);
 722 }
 723
 724 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 725 {
 726         struct cpsw_common *cpsw = priv->cpsw;
 727         struct phy_device *phy;
 728
 729         cpsw_sl_reset(slave->mac_sl, 100);
 730         cpsw_sl_ctl_reset(slave->mac_sl);
 731
 732         /* setup priority mapping */
 733         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 734                           RX_PRIORITY_MAPPING);
 735
 736         switch (cpsw->version) {
 737         case CPSW_VERSION_1:
 738                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 739                 /* Increase RX FIFO size to 5 for supporting fullduplex
 740                  * flow control mode
 741                  */
 742                 slave_write(slave,
 743                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 744                             CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 745                 break;
 746         case CPSW_VERSION_2:
 747         case CPSW_VERSION_3:
 748         case CPSW_VERSION_4:
 749                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 750                 /* Increase RX FIFO size to 5 for supporting fullduplex
 751                  * flow control mode
 752                  */
 753                 slave_write(slave,
 754                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 755                             CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 756                 break;
 757         }
 758
 759         /* setup max packet size, and mac address */
 760         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 761                           cpsw->rx_packet_max);
 762         cpsw_set_slave_mac(slave, priv);
 763
 764         slave->mac_control = 0; /* no link yet */
 765
 766         if (cpsw_is_switch_en(cpsw))
 767                 cpsw_port_add_switch_def_ale_entries(priv, slave);
 768         else
 769                 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
 770
 771         if (!slave->data->phy_node)
 772                 dev_err(priv->dev, "no phy found on slave %d\n",
 773                         slave->slave_num);
 774         phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 775                              &cpsw_adjust_link, 0, slave->data->phy_if);
 776         if (!phy) {
 777                 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 778                         slave->data->phy_node,
 779                         slave->slave_num);
 780                 return;
 781         }
 782         slave->phy = phy;
 783
 784         phy_attached_info(slave->phy);
 785
 786         phy_start(slave->phy);
 787
 788         /* Configure GMII_SEL register */
 789         phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 790                          slave->data->phy_if);
 791 }
 792
 793 static int cpsw_ndo_stop(struct net_device *ndev)
 794 {
 795         struct cpsw_priv *priv = netdev_priv(ndev);
 796         struct cpsw_common *cpsw = priv->cpsw;
 797         struct cpsw_slave *slave;
 798
 799         cpsw_info(priv, ifdown, "shutting down ndev\n");
 800         slave = &cpsw->slaves[priv->emac_port - 1];
 801         if (slave->phy)
 802                 phy_stop(slave->phy);
 803
 804         netif_tx_stop_all_queues(priv->ndev);
 805
 806         if (slave->phy) {
 807                 phy_disconnect(slave->phy);
 808                 slave->phy = NULL;
 809         }
 810
 811         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 812
 813         if (cpsw->usage_count <= 1) {
 814                 napi_disable(&cpsw->napi_rx);
 815                 napi_disable(&cpsw->napi_tx);
 816                 cpts_unregister(cpsw->cpts);
 817                 cpsw_intr_disable(cpsw);
 818                 cpdma_ctlr_stop(cpsw->dma);
 819                 cpsw_ale_stop(cpsw->ale);
 820                 cpsw_destroy_xdp_rxqs(cpsw);
 821         }
 822
 823         if (cpsw_need_resplit(cpsw))
 824                 cpsw_split_res(cpsw);
 825
 826         cpsw->usage_count--;
 827         pm_runtime_put_sync(cpsw->dev);
 828         return 0;
 829 }
 830
 831 static int cpsw_ndo_open(struct net_device *ndev)
 832 {
 833         struct cpsw_priv *priv = netdev_priv(ndev);
 834         struct cpsw_common *cpsw = priv->cpsw;
 835         int ret;
 836
 837         dev_info(priv->dev, "starting ndev. mode: %s\n",
 838                  cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
 839         ret = pm_runtime_get_sync(cpsw->dev);
 840         if (ret < 0) {
 841                 pm_runtime_put_noidle(cpsw->dev);
 842                 return ret;
 843         }
 844
 845         /* Notify the stack of the actual queue counts. */
 846         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 847         if (ret) {
 848                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 849                 goto pm_cleanup;
 850         }
 851
 852         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 853         if (ret) {
 854                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 855                 goto pm_cleanup;
 856         }
 857
 858         /* Initialize host and slave ports */
 859         if (!cpsw->usage_count)
 860                 cpsw_init_host_port(priv);
 861         cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
 862
 863         /* initialize shared resources for every ndev */
 864         if (!cpsw->usage_count) {
 865                 /* create rxqs for both infs in dual mac as they use same pool
 866                  * and must be destroyed together when no users.
 867                  */
 868                 ret = cpsw_create_xdp_rxqs(cpsw);
 869                 if (ret < 0)
 870                         goto err_cleanup;
 871
 872                 ret = cpsw_fill_rx_channels(priv);
 873                 if (ret < 0)
 874                         goto err_cleanup;
 875
 876                 if (cpts_register(cpsw->cpts))
 877                         dev_err(priv->dev, "error registering cpts device\n");
 878
 879                 napi_enable(&cpsw->napi_rx);
 880                 napi_enable(&cpsw->napi_tx);
 881
 882                 if (cpsw->tx_irq_disabled) {
 883                         cpsw->tx_irq_disabled = false;
 884                         enable_irq(cpsw->irqs_table[1]);
 885                 }
 886
 887                 if (cpsw->rx_irq_disabled) {
 888                         cpsw->rx_irq_disabled = false;
 889                         enable_irq(cpsw->irqs_table[0]);
 890                 }
 891         }
 892
 893         cpsw_restore(priv);
 894
 895         /* Enable Interrupt pacing if configured */
 896         if (cpsw->coal_intvl != 0) {
 897                 struct ethtool_coalesce coal;
 898
 899                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 900                 cpsw_set_coalesce(ndev, &coal);
 901         }
 902
 903         cpdma_ctlr_start(cpsw->dma);
 904         cpsw_intr_enable(cpsw);
 905         cpsw->usage_count++;
 906
 907         return 0;
 908
 909 err_cleanup:
 910         cpsw_ndo_stop(ndev);
 911
 912 pm_cleanup:
 913         pm_runtime_put_sync(cpsw->dev);
 914         return ret;
 915 }
 916
 917 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 918                                        struct net_device *ndev)
 919 {
 920         struct cpsw_priv *priv = netdev_priv(ndev);
 921         struct cpsw_common *cpsw = priv->cpsw;
 922         struct cpts *cpts = cpsw->cpts;
 923         struct netdev_queue *txq;
 924         struct cpdma_chan *txch;
 925         int ret, q_idx;
 926
 927         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 928                 cpsw_err(priv, tx_err, "packet pad failed\n");
 929                 ndev->stats.tx_dropped++;
 930                 return NET_XMIT_DROP;
 931         }
 932
 933         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 934             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 935                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 936
 937         q_idx = skb_get_queue_mapping(skb);
 938         if (q_idx >= cpsw->tx_ch_num)
 939                 q_idx = q_idx % cpsw->tx_ch_num;
 940
 941         txch = cpsw->txv[q_idx].ch;
 942         txq = netdev_get_tx_queue(ndev, q_idx);
 943         skb_tx_timestamp(skb);
 944         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 945                                 priv->emac_port);
 946         if (unlikely(ret != 0)) {
 947                 cpsw_err(priv, tx_err, "desc submit failed\n");
 948                 goto fail;
 949         }
 950
 951         /* If there is no more tx desc left free then we need to
 952          * tell the kernel to stop sending us tx frames.
 953          */
 954         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 955                 netif_tx_stop_queue(txq);
 956
 957                 /* Barrier, so that stop_queue visible to other cpus */
 958                 smp_mb__after_atomic();
 959
 960                 if (cpdma_check_free_tx_desc(txch))
 961                         netif_tx_wake_queue(txq);
 962         }
 963
 964         return NETDEV_TX_OK;
 965 fail:
 966         ndev->stats.tx_dropped++;
 967         netif_tx_stop_queue(txq);
 968
 969         /* Barrier, so that stop_queue visible to other cpus */
 970         smp_mb__after_atomic();
 971
 972         if (cpdma_check_free_tx_desc(txch))
 973                 netif_tx_wake_queue(txq);
 974
 975         return NETDEV_TX_BUSY;
 976 }
 977
 978 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 979 {
 980         struct sockaddr *addr = (struct sockaddr *)p;
 981         struct cpsw_priv *priv = netdev_priv(ndev);
 982         struct cpsw_common *cpsw = priv->cpsw;
 983         int ret, slave_no;
 984         int flags = 0;
 985         u16 vid = 0;
 986
 987         slave_no = cpsw_slave_index(cpsw, priv);
 988         if (!is_valid_ether_addr(addr->sa_data))
 989                 return -EADDRNOTAVAIL;
 990
 991         ret = pm_runtime_get_sync(cpsw->dev);
 992         if (ret < 0) {
 993                 pm_runtime_put_noidle(cpsw->dev);
 994                 return ret;
 995         }
 996
 997         vid = cpsw->slaves[slave_no].port_vlan;
 998         flags = ALE_VLAN | ALE_SECURE;
 999
1000         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
1001                            flags, vid);
1002         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
1003                            flags, vid);
1004
1005         ether_addr_copy(priv->mac_addr, addr->sa_data);
1006         ether_addr_copy(ndev->dev_addr, priv->mac_addr);
1007         cpsw_set_slave_mac(&cpsw->slaves[slave_no], priv);
1008
1009         pm_runtime_put(cpsw->dev);
1010
1011         return 0;
1012 }
1013
1014 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1015                                      __be16 proto, u16 vid)
1016 {
1017         struct cpsw_priv *priv = netdev_priv(ndev);
1018         struct cpsw_common *cpsw = priv->cpsw;
1019         int ret;
1020         int i;
1021
1022         if (cpsw_is_switch_en(cpsw)) {
1023                 dev_dbg(cpsw->dev, "ndo del vlan is called in switch mode\n");
1024                 return 0;
1025         }
1026
1027         if (vid == cpsw->data.default_vlan)
1028                 return 0;
1029
1030         ret = pm_runtime_get_sync(cpsw->dev);
1031         if (ret < 0) {
1032                 pm_runtime_put_noidle(cpsw->dev);
1033                 return ret;
1034         }
1035
1036         /* reset the return code as pm_runtime_get_sync() can return
1037          * non zero values as well.
1038          */
1039         ret = 0;
1040         for (i = 0; i < cpsw->data.slaves; i++) {
1041                 if (cpsw->slaves[i].ndev &&
1042                     vid == cpsw->slaves[i].port_vlan) {
1043                         ret = -EINVAL;
1044                         goto err;
1045                 }
1046         }
1047
1048         dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1049         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1050         if (ret)
1051                 dev_err(priv->dev, "cpsw_ale_del_vlan() failed: ret %d\n", ret);
1052         ret = cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1053                                  HOST_PORT_NUM, ALE_VLAN, vid);
1054         if (ret)
1055                 dev_err(priv->dev, "cpsw_ale_del_ucast() failed: ret %d\n",
1056                         ret);
1057         ret = cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1058                                  0, ALE_VLAN, vid);
1059         if (ret)
1060                 dev_err(priv->dev, "cpsw_ale_del_mcast failed. ret %d\n",
1061                         ret);
1062         cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1063         ret = 0;
1064 err:
1065         pm_runtime_put(cpsw->dev);
1066         return ret;
1067 }
1068
1069 static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
1070                                        size_t len)
1071 {
1072         struct cpsw_priv *priv = netdev_priv(ndev);
1073         int err;
1074
1075         err = snprintf(name, len, "p%d", priv->emac_port);
1076
1077         if (err >= len)
1078                 return -EINVAL;
1079
1080         return 0;
1081 }
1082
1083 #ifdef CONFIG_NET_POLL_CONTROLLER
1084 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1085 {
1086         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1087
1088         cpsw_intr_disable(cpsw);
1089         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1090         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1091         cpsw_intr_enable(cpsw);
1092 }
1093 #endif
1094
1095 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1096                              struct xdp_frame **frames, u32 flags)
1097 {
1098         struct cpsw_priv *priv = netdev_priv(ndev);
1099         struct xdp_frame *xdpf;
1100         int i, drops = 0;
1101
1102         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1103                 return -EINVAL;
1104
1105         for (i = 0; i < n; i++) {
1106                 xdpf = frames[i];
1107                 if (xdpf->len < CPSW_MIN_PACKET_SIZE) {
1108                         xdp_return_frame_rx_napi(xdpf);
1109                         drops++;
1110                         continue;
1111                 }
1112
1113                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
1114                         drops++;
1115         }
1116
1117         return n - drops;
1118 }
1119
1120 static int cpsw_get_port_parent_id(struct net_device *ndev,
1121                                    struct netdev_phys_item_id *ppid)
1122 {
1123         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1124
1125         ppid->id_len = sizeof(cpsw->base_mac);
1126         memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
1127
1128         return 0;
1129 }
1130
1131 static const struct net_device_ops cpsw_netdev_ops = {
1132         .ndo_open               = cpsw_ndo_open,
1133         .ndo_stop               = cpsw_ndo_stop,
1134         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1135         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1136         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1137         .ndo_validate_addr      = eth_validate_addr,
1138         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1139         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1140         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1141 #ifdef CONFIG_NET_POLL_CONTROLLER
1142         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1143 #endif
1144         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1145         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1146         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1147         .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
1148         .ndo_bpf                = cpsw_ndo_bpf,
1149         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1150         .ndo_get_port_parent_id = cpsw_get_port_parent_id,
1151 };
1152
1153 static void cpsw_get_drvinfo(struct net_device *ndev,
1154                              struct ethtool_drvinfo *info)
1155 {
1156         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1157         struct platform_device *pdev;
1158
1159         pdev = to_platform_device(cpsw->dev);
1160         strlcpy(info->driver, "cpsw-switch", sizeof(info->driver));
1161         strlcpy(info->version, "2.0", sizeof(info->version));
1162         strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1163 }
1164
1165 static int cpsw_set_pauseparam(struct net_device *ndev,
1166                                struct ethtool_pauseparam *pause)
1167 {
1168         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1169         struct cpsw_priv *priv = netdev_priv(ndev);
1170         int slave_no;
1171
1172         slave_no = cpsw_slave_index(cpsw, priv);
1173         if (!cpsw->slaves[slave_no].phy)
1174                 return -EINVAL;
1175
1176         if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
1177                 return -EINVAL;
1178
1179         priv->rx_pause = pause->rx_pause ? true : false;
1180         priv->tx_pause = pause->tx_pause ? true : false;
1181
1182         phy_set_asym_pause(cpsw->slaves[slave_no].phy,
1183                            priv->rx_pause, priv->tx_pause);
1184
1185         return 0;
1186 }
1187
1188 static int cpsw_set_channels(struct net_device *ndev,
1189                              struct ethtool_channels *chs)
1190 {
1191         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1192 }
1193
1194 static const struct ethtool_ops cpsw_ethtool_ops = {
1195         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1196         .get_drvinfo            = cpsw_get_drvinfo,
1197         .get_msglevel           = cpsw_get_msglevel,
1198         .set_msglevel           = cpsw_set_msglevel,
1199         .get_link               = ethtool_op_get_link,
1200         .get_ts_info            = cpsw_get_ts_info,
1201         .get_coalesce           = cpsw_get_coalesce,
1202         .set_coalesce           = cpsw_set_coalesce,
1203         .get_sset_count         = cpsw_get_sset_count,
1204         .get_strings            = cpsw_get_strings,
1205         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1206         .get_pauseparam         = cpsw_get_pauseparam,
1207         .set_pauseparam         = cpsw_set_pauseparam,
1208         .get_wol                = cpsw_get_wol,
1209         .set_wol                = cpsw_set_wol,
1210         .get_regs_len           = cpsw_get_regs_len,
1211         .get_regs               = cpsw_get_regs,
1212         .begin                  = cpsw_ethtool_op_begin,
1213         .complete               = cpsw_ethtool_op_complete,
1214         .get_channels           = cpsw_get_channels,
1215         .set_channels           = cpsw_set_channels,
1216         .get_link_ksettings     = cpsw_get_link_ksettings,
1217         .set_link_ksettings     = cpsw_set_link_ksettings,
1218         .get_eee                = cpsw_get_eee,
1219         .set_eee                = cpsw_set_eee,
1220         .nway_reset             = cpsw_nway_reset,
1221         .get_ringparam          = cpsw_get_ringparam,
1222         .set_ringparam          = cpsw_set_ringparam,
1223 };
1224
1225 static int cpsw_probe_dt(struct cpsw_common *cpsw)
1226 {
1227         struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
1228         struct cpsw_platform_data *data = &cpsw->data;
1229         struct device *dev = cpsw->dev;
1230         int ret;
1231         u32 prop;
1232
1233         if (!node)
1234                 return -EINVAL;
1235
1236         tmp_node = of_get_child_by_name(node, "ethernet-ports");
1237         if (!tmp_node)
1238                 return -ENOENT;
1239         data->slaves = of_get_child_count(tmp_node);
1240         if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
1241                 of_node_put(tmp_node);
1242                 return -ENOENT;
1243         }
1244
1245         data->active_slave = 0;
1246         data->channels = CPSW_MAX_QUEUES;
1247         data->ale_entries = CPSW_ALE_NUM_ENTRIES;
1248         data->dual_emac = true;
1249         data->bd_ram_size = CPSW_BD_RAM_SIZE;
1250         data->mac_control = 0;
1251
1252         data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
1253                                         sizeof(struct cpsw_slave_data),
1254                                         GFP_KERNEL);
1255         if (!data->slave_data)
1256                 return -ENOMEM;
1257
1258         /* Populate all the child nodes here...
1259          */
1260         ret = devm_of_platform_populate(dev);
1261         /* We do not want to force this, as in some cases may not have child */
1262         if (ret)
1263                 dev_warn(dev, "Doesn't have any child node\n");
1264
1265         for_each_child_of_node(tmp_node, port_np) {
1266                 struct cpsw_slave_data *slave_data;
1267                 const void *mac_addr;
1268                 u32 port_id;
1269
1270                 ret = of_property_read_u32(port_np, "reg", &port_id);
1271                 if (ret < 0) {
1272                         dev_err(dev, "%pOF error reading port_id %d\n",
1273                                 port_np, ret);
1274                         goto err_node_put;
1275                 }
1276
1277                 if (!port_id || port_id > CPSW_SLAVE_PORTS_NUM) {
1278                         dev_err(dev, "%pOF has invalid port_id %u\n",
1279                                 port_np, port_id);
1280                         ret = -EINVAL;
1281                         goto err_node_put;
1282                 }
1283
1284                 slave_data = &data->slave_data[port_id - 1];
1285
1286                 slave_data->disabled = !of_device_is_available(port_np);
1287                 if (slave_data->disabled)
1288                         continue;
1289
1290                 slave_data->slave_node = port_np;
1291                 slave_data->ifphy = devm_of_phy_get(dev, port_np, NULL);
1292                 if (IS_ERR(slave_data->ifphy)) {
1293                         ret = PTR_ERR(slave_data->ifphy);
1294                         dev_err(dev, "%pOF: Error retrieving port phy: %d\n",
1295                                 port_np, ret);
1296                         goto err_node_put;
1297                 }
1298
1299                 if (of_phy_is_fixed_link(port_np)) {
1300                         ret = of_phy_register_fixed_link(port_np);
1301                         if (ret) {
1302                                 if (ret != -EPROBE_DEFER)
1303                                         dev_err(dev, "%pOF failed to register fixed-link phy: %d\n",
1304                                                 port_np, ret);
1305                                 goto err_node_put;
1306                         }
1307                         slave_data->phy_node = of_node_get(port_np);
1308                 } else {
1309                         slave_data->phy_node =
1310                                 of_parse_phandle(port_np, "phy-handle", 0);
1311                 }
1312
1313                 if (!slave_data->phy_node) {
1314                         dev_err(dev, "%pOF no phy found\n", port_np);
1315                         ret = -ENODEV;
1316                         goto err_node_put;
1317                 }
1318
1319                 ret = of_get_phy_mode(port_np, &slave_data->phy_if);
1320                 if (ret) {
1321                         dev_err(dev, "%pOF read phy-mode err %d\n",
1322                                 port_np, ret);
1323                         goto err_node_put;
1324                 }
1325
1326                 mac_addr = of_get_mac_address(port_np);
1327                 if (!IS_ERR(mac_addr)) {
1328                         ether_addr_copy(slave_data->mac_addr, mac_addr);
1329                 } else {
1330                         ret = ti_cm_get_macid(dev, port_id - 1,
1331                                               slave_data->mac_addr);
1332                         if (ret)
1333                                 goto err_node_put;
1334                 }
1335
1336                 if (of_property_read_u32(port_np, "ti,dual-emac-pvid",
1337                                          &prop)) {
1338                         dev_err(dev, "%pOF Missing dual_emac_res_vlan in DT.\n",
1339                                 port_np);
1340                         slave_data->dual_emac_res_vlan = port_id;
1341                         dev_err(dev, "%pOF Using %d as Reserved VLAN\n",
1342                                 port_np, slave_data->dual_emac_res_vlan);
1343                 } else {
1344                         slave_data->dual_emac_res_vlan = prop;
1345                 }
1346         }
1347
1348         of_node_put(tmp_node);
1349         return 0;
1350
1351 err_node_put:
1352         of_node_put(port_np);
1353         return ret;
1354 }
1355
1356 static void cpsw_remove_dt(struct cpsw_common *cpsw)
1357 {
1358         struct cpsw_platform_data *data = &cpsw->data;
1359         int i = 0;
1360
1361         for (i = 0; i < cpsw->data.slaves; i++) {
1362                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1363                 struct device_node *port_np = slave_data->phy_node;
1364
1365                 if (port_np) {
1366                         if (of_phy_is_fixed_link(port_np))
1367                                 of_phy_deregister_fixed_link(port_np);
1368
1369                         of_node_put(port_np);
1370                 }
1371         }
1372 }
1373
1374 static int cpsw_create_ports(struct cpsw_common *cpsw)
1375 {
1376         struct cpsw_platform_data *data = &cpsw->data;
1377         struct net_device *ndev, *napi_ndev = NULL;
1378         struct device *dev = cpsw->dev;
1379         struct cpsw_priv *priv;
1380         int ret = 0, i = 0;
1381
1382         for (i = 0; i < cpsw->data.slaves; i++) {
1383                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1384
1385                 if (slave_data->disabled)
1386                         continue;
1387
1388                 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1389                                                CPSW_MAX_QUEUES,
1390                                                CPSW_MAX_QUEUES);
1391                 if (!ndev) {
1392                         dev_err(dev, "error allocating net_device\n");
1393                         return -ENOMEM;
1394                 }
1395
1396                 priv = netdev_priv(ndev);
1397                 priv->cpsw = cpsw;
1398                 priv->ndev = ndev;
1399                 priv->dev  = dev;
1400                 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1401                 priv->emac_port = i + 1;
1402
1403                 if (is_valid_ether_addr(slave_data->mac_addr)) {
1404                         ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1405                         dev_info(cpsw->dev, "Detected MACID = %pM\n",
1406                                  priv->mac_addr);
1407                 } else {
1408                         eth_random_addr(slave_data->mac_addr);
1409                         dev_info(cpsw->dev, "Random MACID = %pM\n",
1410                                  priv->mac_addr);
1411                 }
1412                 ether_addr_copy(ndev->dev_addr, slave_data->mac_addr);
1413                 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1414
1415                 cpsw->slaves[i].ndev = ndev;
1416
1417                 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1418                                   NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL;
1419
1420                 ndev->netdev_ops = &cpsw_netdev_ops;
1421                 ndev->ethtool_ops = &cpsw_ethtool_ops;
1422                 SET_NETDEV_DEV(ndev, dev);
1423
1424                 if (!napi_ndev) {
1425                         /* CPSW Host port CPDMA interface is shared between
1426                          * ports and there is only one TX and one RX IRQs
1427                          * available for all possible TX and RX channels
1428                          * accordingly.
1429                          */
1430                         netif_napi_add(ndev, &cpsw->napi_rx,
1431                                        cpsw->quirk_irq ?
1432                                        cpsw_rx_poll : cpsw_rx_mq_poll,
1433                                        CPSW_POLL_WEIGHT);
1434                         netif_tx_napi_add(ndev, &cpsw->napi_tx,
1435                                           cpsw->quirk_irq ?
1436                                           cpsw_tx_poll : cpsw_tx_mq_poll,
1437                                           CPSW_POLL_WEIGHT);
1438                 }
1439
1440                 napi_ndev = ndev;
1441         }
1442
1443         return ret;
1444 }
1445
1446 static void cpsw_unregister_ports(struct cpsw_common *cpsw)
1447 {
1448         int i = 0;
1449
1450         for (i = 0; i < cpsw->data.slaves; i++) {
1451                 if (!cpsw->slaves[i].ndev)
1452                         continue;
1453
1454                 unregister_netdev(cpsw->slaves[i].ndev);
1455         }
1456 }
1457
1458 static int cpsw_register_ports(struct cpsw_common *cpsw)
1459 {
1460         int ret = 0, i = 0;
1461
1462         for (i = 0; i < cpsw->data.slaves; i++) {
1463                 if (!cpsw->slaves[i].ndev)
1464                         continue;
1465
1466                 /* register the network device */
1467                 ret = register_netdev(cpsw->slaves[i].ndev);
1468                 if (ret) {
1469                         dev_err(cpsw->dev,
1470                                 "cpsw: err registering net device%d\n", i);
1471                         cpsw->slaves[i].ndev = NULL;
1472                         break;
1473                 }
1474         }
1475
1476         if (ret)
1477                 cpsw_unregister_ports(cpsw);
1478         return ret;
1479 }
1480
1481 bool cpsw_port_dev_check(const struct net_device *ndev)
1482 {
1483         if (ndev->netdev_ops == &cpsw_netdev_ops) {
1484                 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1485
1486                 return !cpsw->data.dual_emac;
1487         }
1488
1489         return false;
1490 }
1491
1492 static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
1493 {
1494         int set_val = 0;
1495         int i;
1496
1497         if (!cpsw->ale_bypass &&
1498             (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
1499                 set_val = 1;
1500
1501         dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
1502
1503         for (i = 0; i < cpsw->data.slaves; i++) {
1504                 struct net_device *sl_ndev = cpsw->slaves[i].ndev;
1505                 struct cpsw_priv *priv = netdev_priv(sl_ndev);
1506
1507                 priv->offload_fwd_mark = set_val;
1508         }
1509 }
1510
1511 static int cpsw_netdevice_port_link(struct net_device *ndev,
1512                                     struct net_device *br_ndev)
1513 {
1514         struct cpsw_priv *priv = netdev_priv(ndev);
1515         struct cpsw_common *cpsw = priv->cpsw;
1516
1517         if (!cpsw->br_members) {
1518                 cpsw->hw_bridge_dev = br_ndev;
1519         } else {
1520                 /* This is adding the port to a second bridge, this is
1521                  * unsupported
1522                  */
1523                 if (cpsw->hw_bridge_dev != br_ndev)
1524                         return -EOPNOTSUPP;
1525         }
1526
1527         cpsw->br_members |= BIT(priv->emac_port);
1528
1529         cpsw_port_offload_fwd_mark_update(cpsw);
1530
1531         return NOTIFY_DONE;
1532 }
1533
1534 static void cpsw_netdevice_port_unlink(struct net_device *ndev)
1535 {
1536         struct cpsw_priv *priv = netdev_priv(ndev);
1537         struct cpsw_common *cpsw = priv->cpsw;
1538
1539         cpsw->br_members &= ~BIT(priv->emac_port);
1540
1541         cpsw_port_offload_fwd_mark_update(cpsw);
1542
1543         if (!cpsw->br_members)
1544                 cpsw->hw_bridge_dev = NULL;
1545 }
1546
1547 /* netdev notifier */
1548 static int cpsw_netdevice_event(struct notifier_block *unused,
1549                                 unsigned long event, void *ptr)
1550 {
1551         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
1552         struct netdev_notifier_changeupper_info *info;
1553         int ret = NOTIFY_DONE;
1554
1555         if (!cpsw_port_dev_check(ndev))
1556                 return NOTIFY_DONE;
1557
1558         switch (event) {
1559         case NETDEV_CHANGEUPPER:
1560                 info = ptr;
1561
1562                 if (netif_is_bridge_master(info->upper_dev)) {
1563                         if (info->linking)
1564                                 ret = cpsw_netdevice_port_link(ndev,
1565                                                                info->upper_dev);
1566                         else
1567                                 cpsw_netdevice_port_unlink(ndev);
1568                 }
1569                 break;
1570         default:
1571                 return NOTIFY_DONE;
1572         }
1573
1574         return notifier_from_errno(ret);
1575 }
1576
1577 static struct notifier_block cpsw_netdevice_nb __read_mostly = {
1578         .notifier_call = cpsw_netdevice_event,
1579 };
1580
1581 static int cpsw_register_notifiers(struct cpsw_common *cpsw)
1582 {
1583         int ret = 0;
1584
1585         ret = register_netdevice_notifier(&cpsw_netdevice_nb);
1586         if (ret) {
1587                 dev_err(cpsw->dev, "can't register netdevice notifier\n");
1588                 return ret;
1589         }
1590
1591         ret = cpsw_switchdev_register_notifiers(cpsw);
1592         if (ret)
1593                 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1594
1595         return ret;
1596 }
1597
1598 static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
1599 {
1600         cpsw_switchdev_unregister_notifiers(cpsw);
1601         unregister_netdevice_notifier(&cpsw_netdevice_nb);
1602 }
1603
1604 static const struct devlink_ops cpsw_devlink_ops = {
1605 };
1606
1607 static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
1608                                    struct devlink_param_gset_ctx *ctx)
1609 {
1610         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1611         struct cpsw_common *cpsw = dl_priv->cpsw;
1612
1613         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1614
1615         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1616                 return  -EOPNOTSUPP;
1617
1618         ctx->val.vbool = !cpsw->data.dual_emac;
1619
1620         return 0;
1621 }
1622
1623 static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
1624                                    struct devlink_param_gset_ctx *ctx)
1625 {
1626         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1627         struct cpsw_common *cpsw = dl_priv->cpsw;
1628         int vlan = cpsw->data.default_vlan;
1629         bool switch_en = ctx->val.vbool;
1630         bool if_running = false;
1631         int i;
1632
1633         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1634
1635         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1636                 return  -EOPNOTSUPP;
1637
1638         if (switch_en == !cpsw->data.dual_emac)
1639                 return 0;
1640
1641         if (!switch_en && cpsw->br_members) {
1642                 dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
1643                 return -EINVAL;
1644         }
1645
1646         rtnl_lock();
1647
1648         for (i = 0; i < cpsw->data.slaves; i++) {
1649                 struct cpsw_slave *slave = &cpsw->slaves[i];
1650                 struct net_device *sl_ndev = slave->ndev;
1651
1652                 if (!sl_ndev || !netif_running(sl_ndev))
1653                         continue;
1654
1655                 if_running = true;
1656         }
1657
1658         if (!if_running) {
1659                 /* all ndevs are down */
1660                 cpsw->data.dual_emac = !switch_en;
1661                 for (i = 0; i < cpsw->data.slaves; i++) {
1662                         struct cpsw_slave *slave = &cpsw->slaves[i];
1663                         struct net_device *sl_ndev = slave->ndev;
1664                         struct cpsw_priv *priv;
1665
1666                         if (!sl_ndev)
1667                                 continue;
1668
1669                         priv = netdev_priv(sl_ndev);
1670                         if (switch_en)
1671                                 vlan = cpsw->data.default_vlan;
1672                         else
1673                                 vlan = slave->data->dual_emac_res_vlan;
1674                         slave->port_vlan = vlan;
1675                 }
1676                 goto exit;
1677         }
1678
1679         if (switch_en) {
1680                 dev_info(cpsw->dev, "Enable switch mode\n");
1681
1682                 /* enable bypass - no forwarding; all traffic goes to Host */
1683                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1684
1685                 /* clean up ALE table */
1686                 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1687                 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1688
1689                 cpsw_init_host_port_switch(cpsw);
1690
1691                 for (i = 0; i < cpsw->data.slaves; i++) {
1692                         struct cpsw_slave *slave = &cpsw->slaves[i];
1693                         struct net_device *sl_ndev = slave->ndev;
1694                         struct cpsw_priv *priv;
1695
1696                         if (!sl_ndev)
1697                                 continue;
1698
1699                         priv = netdev_priv(sl_ndev);
1700                         slave->port_vlan = vlan;
1701                         if (netif_running(sl_ndev))
1702                                 cpsw_port_add_switch_def_ale_entries(priv,
1703                                                                      slave);
1704                 }
1705
1706                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1707                 cpsw->data.dual_emac = false;
1708         } else {
1709                 dev_info(cpsw->dev, "Disable switch mode\n");
1710
1711                 /* enable bypass - no forwarding; all traffic goes to Host */
1712                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1713
1714                 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1715                 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1716
1717                 cpsw_init_host_port_dual_mac(cpsw);
1718
1719                 for (i = 0; i < cpsw->data.slaves; i++) {
1720                         struct cpsw_slave *slave = &cpsw->slaves[i];
1721                         struct net_device *sl_ndev = slave->ndev;
1722                         struct cpsw_priv *priv;
1723
1724                         if (!sl_ndev)
1725                                 continue;
1726
1727                         priv = netdev_priv(slave->ndev);
1728                         slave->port_vlan = slave->data->dual_emac_res_vlan;
1729                         cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
1730                 }
1731
1732                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1733                 cpsw->data.dual_emac = true;
1734         }
1735 exit:
1736         rtnl_unlock();
1737
1738         return 0;
1739 }
1740
1741 static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
1742                                 struct devlink_param_gset_ctx *ctx)
1743 {
1744         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1745         struct cpsw_common *cpsw = dl_priv->cpsw;
1746
1747         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1748
1749         switch (id) {
1750         case CPSW_DL_PARAM_ALE_BYPASS:
1751                 ctx->val.vbool = cpsw_ale_control_get(cpsw->ale, 0, ALE_BYPASS);
1752                 break;
1753         default:
1754                 return -EOPNOTSUPP;
1755         }
1756
1757         return 0;
1758 }
1759
1760 static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
1761                                 struct devlink_param_gset_ctx *ctx)
1762 {
1763         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1764         struct cpsw_common *cpsw = dl_priv->cpsw;
1765         int ret = -EOPNOTSUPP;
1766
1767         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1768
1769         switch (id) {
1770         case CPSW_DL_PARAM_ALE_BYPASS:
1771                 ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
1772                                            ctx->val.vbool);
1773                 if (!ret) {
1774                         cpsw->ale_bypass = ctx->val.vbool;
1775                         cpsw_port_offload_fwd_mark_update(cpsw);
1776                 }
1777                 break;
1778         default:
1779                 return -EOPNOTSUPP;
1780         }
1781
1782         return 0;
1783 }
1784
1785 static const struct devlink_param cpsw_devlink_params[] = {
1786         DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_SWITCH_MODE,
1787                              "switch_mode", DEVLINK_PARAM_TYPE_BOOL,
1788                              BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1789                              cpsw_dl_switch_mode_get, cpsw_dl_switch_mode_set,
1790                              NULL),
1791         DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
1792                              "ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
1793                              BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1794                              cpsw_dl_ale_ctrl_get, cpsw_dl_ale_ctrl_set, NULL),
1795 };
1796
1797 static int cpsw_register_devlink(struct cpsw_common *cpsw)
1798 {
1799         struct device *dev = cpsw->dev;
1800         struct cpsw_devlink *dl_priv;
1801         int ret = 0;
1802
1803         cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv));
1804         if (!cpsw->devlink)
1805                 return -ENOMEM;
1806
1807         dl_priv = devlink_priv(cpsw->devlink);
1808         dl_priv->cpsw = cpsw;
1809
1810         ret = devlink_register(cpsw->devlink, dev);
1811         if (ret) {
1812                 dev_err(dev, "DL reg fail ret:%d\n", ret);
1813                 goto dl_free;
1814         }
1815
1816         ret = devlink_params_register(cpsw->devlink, cpsw_devlink_params,
1817                                       ARRAY_SIZE(cpsw_devlink_params));
1818         if (ret) {
1819                 dev_err(dev, "DL params reg fail ret:%d\n", ret);
1820                 goto dl_unreg;
1821         }
1822
1823         devlink_params_publish(cpsw->devlink);
1824         return ret;
1825
1826 dl_unreg:
1827         devlink_unregister(cpsw->devlink);
1828 dl_free:
1829         devlink_free(cpsw->devlink);
1830         return ret;
1831 }
1832
1833 static void cpsw_unregister_devlink(struct cpsw_common *cpsw)
1834 {
1835         devlink_params_unpublish(cpsw->devlink);
1836         devlink_params_unregister(cpsw->devlink, cpsw_devlink_params,
1837                                   ARRAY_SIZE(cpsw_devlink_params));
1838         devlink_unregister(cpsw->devlink);
1839         devlink_free(cpsw->devlink);
1840 }
1841
1842 static const struct of_device_id cpsw_of_mtable[] = {
1843         { .compatible = "ti,cpsw-switch"},
1844         { .compatible = "ti,am335x-cpsw-switch"},
1845         { .compatible = "ti,am4372-cpsw-switch"},
1846         { .compatible = "ti,dra7-cpsw-switch"},
1847         { /* sentinel */ },
1848 };
1849 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1850
1851 static const struct soc_device_attribute cpsw_soc_devices[] = {
1852         { .family = "AM33xx", .revision = "ES1.0"},
1853         { /* sentinel */ }
1854 };
1855
1856 static int cpsw_probe(struct platform_device *pdev)
1857 {
1858         const struct soc_device_attribute *soc;
1859         struct device *dev = &pdev->dev;
1860         struct cpsw_common *cpsw;
1861         struct resource *ss_res;
1862         struct gpio_descs *mode;
1863         void __iomem *ss_regs;
1864         int ret = 0, ch;
1865         struct clk *clk;
1866         int irq;
1867
1868         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1869         if (!cpsw)
1870                 return -ENOMEM;
1871
1872         cpsw_slave_index = cpsw_slave_index_priv;
1873
1874         cpsw->dev = dev;
1875
1876         cpsw->slaves = devm_kcalloc(dev,
1877                                     CPSW_SLAVE_PORTS_NUM,
1878                                     sizeof(struct cpsw_slave),
1879                                     GFP_KERNEL);
1880         if (!cpsw->slaves)
1881                 return -ENOMEM;
1882
1883         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1884         if (IS_ERR(mode)) {
1885                 ret = PTR_ERR(mode);
1886                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1887                 return ret;
1888         }
1889
1890         clk = devm_clk_get(dev, "fck");
1891         if (IS_ERR(clk)) {
1892                 ret = PTR_ERR(clk);
1893                 dev_err(dev, "fck is not found %d\n", ret);
1894                 return ret;
1895         }
1896         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1897
1898         ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1899         ss_regs = devm_ioremap_resource(dev, ss_res);
1900         if (IS_ERR(ss_regs)) {
1901                 ret = PTR_ERR(ss_regs);
1902                 return ret;
1903         }
1904         cpsw->regs = ss_regs;
1905
1906         irq = platform_get_irq_byname(pdev, "rx");
1907         if (irq < 0)
1908                 return irq;
1909         cpsw->irqs_table[0] = irq;
1910
1911         irq = platform_get_irq_byname(pdev, "tx");
1912         if (irq < 0)
1913                 return irq;
1914         cpsw->irqs_table[1] = irq;
1915
1916         irq = platform_get_irq_byname(pdev, "misc");
1917         if (irq <= 0)
1918                 return irq;
1919         cpsw->misc_irq = irq;
1920
1921         platform_set_drvdata(pdev, cpsw);
1922         /* This may be required here for child devices. */
1923         pm_runtime_enable(dev);
1924
1925         /* Need to enable clocks with runtime PM api to access module
1926          * registers
1927          */
1928         ret = pm_runtime_get_sync(dev);
1929         if (ret < 0) {
1930                 pm_runtime_put_noidle(dev);
1931                 pm_runtime_disable(dev);
1932                 return ret;
1933         }
1934
1935         ret = cpsw_probe_dt(cpsw);
1936         if (ret)
1937                 goto clean_dt_ret;
1938
1939         soc = soc_device_match(cpsw_soc_devices);
1940         if (soc)
1941                 cpsw->quirk_irq = true;
1942
1943         cpsw->rx_packet_max = rx_packet_max;
1944         cpsw->descs_pool_size = descs_pool_size;
1945         eth_random_addr(cpsw->base_mac);
1946
1947         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1948                                (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
1949                                descs_pool_size);
1950         if (ret)
1951                 goto clean_dt_ret;
1952
1953         cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
1954                         ss_regs + CPSW1_WR_OFFSET :
1955                         ss_regs + CPSW2_WR_OFFSET;
1956
1957         ch = cpsw->quirk_irq ? 0 : 7;
1958         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1959         if (IS_ERR(cpsw->txv[0].ch)) {
1960                 dev_err(dev, "error initializing tx dma channel\n");
1961                 ret = PTR_ERR(cpsw->txv[0].ch);
1962                 goto clean_cpts;
1963         }
1964
1965         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1966         if (IS_ERR(cpsw->rxv[0].ch)) {
1967                 dev_err(dev, "error initializing rx dma channel\n");
1968                 ret = PTR_ERR(cpsw->rxv[0].ch);
1969                 goto clean_cpts;
1970         }
1971         cpsw_split_res(cpsw);
1972
1973         /* setup netdevs */
1974         ret = cpsw_create_ports(cpsw);
1975         if (ret)
1976                 goto clean_unregister_netdev;
1977
1978         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1979          * MISC IRQs which are always kept disabled with this driver so
1980          * we will not request them.
1981          *
1982          * If anyone wants to implement support for those, make sure to
1983          * first request and append them to irqs_table array.
1984          */
1985
1986         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1987                                0, dev_name(dev), cpsw);
1988         if (ret < 0) {
1989                 dev_err(dev, "error attaching irq (%d)\n", ret);
1990                 goto clean_unregister_netdev;
1991         }
1992
1993         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1994                                0, dev_name(dev), cpsw);
1995         if (ret < 0) {
1996                 dev_err(dev, "error attaching irq (%d)\n", ret);
1997                 goto clean_unregister_netdev;
1998         }
1999
2000         if (!cpsw->cpts)
2001                 goto skip_cpts;
2002
2003         ret = devm_request_irq(dev, cpsw->misc_irq, cpsw_misc_interrupt,
2004                                0, dev_name(&pdev->dev), cpsw);
2005         if (ret < 0) {
2006                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
2007                 goto clean_unregister_netdev;
2008         }
2009
2010         /* Enable misc CPTS evnt_pend IRQ */
2011         cpts_set_irqpoll(cpsw->cpts, false);
2012         writel(0x10, &cpsw->wr_regs->misc_en);
2013
2014 skip_cpts:
2015         ret = cpsw_register_notifiers(cpsw);
2016         if (ret)
2017                 goto clean_unregister_netdev;
2018
2019         ret = cpsw_register_devlink(cpsw);
2020         if (ret)
2021                 goto clean_unregister_notifiers;
2022
2023         ret = cpsw_register_ports(cpsw);
2024         if (ret)
2025                 goto clean_unregister_notifiers;
2026
2027         dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
2028                    &ss_res->start, descs_pool_size,
2029                    cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
2030                    CPSW_MINOR_VERSION(cpsw->version),
2031                    CPSW_RTL_VERSION(cpsw->version));
2032
2033         pm_runtime_put(dev);
2034
2035         return 0;
2036
2037 clean_unregister_notifiers:
2038         cpsw_unregister_notifiers(cpsw);
2039 clean_unregister_netdev:
2040         cpsw_unregister_ports(cpsw);
2041 clean_cpts:
2042         cpts_release(cpsw->cpts);
2043         cpdma_ctlr_destroy(cpsw->dma);
2044 clean_dt_ret:
2045         cpsw_remove_dt(cpsw);
2046         pm_runtime_put_sync(dev);
2047         pm_runtime_disable(dev);
2048         return ret;
2049 }
2050
2051 static int cpsw_remove(struct platform_device *pdev)
2052 {
2053         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
2054         int ret;
2055
2056         ret = pm_runtime_get_sync(&pdev->dev);
2057         if (ret < 0) {
2058                 pm_runtime_put_noidle(&pdev->dev);
2059                 return ret;
2060         }
2061
2062         cpsw_unregister_notifiers(cpsw);
2063         cpsw_unregister_devlink(cpsw);
2064         cpsw_unregister_ports(cpsw);
2065
2066         cpts_release(cpsw->cpts);
2067         cpdma_ctlr_destroy(cpsw->dma);
2068         cpsw_remove_dt(cpsw);
2069         pm_runtime_put_sync(&pdev->dev);
2070         pm_runtime_disable(&pdev->dev);
2071         return 0;
2072 }
2073
2074 static int __maybe_unused cpsw_suspend(struct device *dev)
2075 {
2076         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2077         int i;
2078
2079         rtnl_lock();
2080
2081         for (i = 0; i < cpsw->data.slaves; i++) {
2082                 struct net_device *ndev = cpsw->slaves[i].ndev;
2083
2084                 if (!(ndev && netif_running(ndev)))
2085                         continue;
2086
2087                 cpsw_ndo_stop(ndev);
2088         }
2089
2090         rtnl_unlock();
2091
2092         /* Select sleep pin state */
2093         pinctrl_pm_select_sleep_state(dev);
2094
2095         return 0;
2096 }
2097
2098 static int __maybe_unused cpsw_resume(struct device *dev)
2099 {
2100         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2101         int i;
2102
2103         /* Select default pin state */
2104         pinctrl_pm_select_default_state(dev);
2105
2106         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
2107         rtnl_lock();
2108
2109         for (i = 0; i < cpsw->data.slaves; i++) {
2110                 struct net_device *ndev = cpsw->slaves[i].ndev;
2111
2112                 if (!(ndev && netif_running(ndev)))
2113                         continue;
2114
2115                 cpsw_ndo_open(ndev);
2116         }
2117
2118         rtnl_unlock();
2119
2120         return 0;
2121 }
2122
2123 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2124
2125 static struct platform_driver cpsw_driver = {
2126         .driver = {
2127                 .name    = "cpsw-switch",
2128                 .pm      = &cpsw_pm_ops,
2129                 .of_match_table = cpsw_of_mtable,
2130         },
2131         .probe = cpsw_probe,
2132         .remove = cpsw_remove,
2133 };
2134
2135 module_platform_driver(cpsw_driver);
2136
2137 MODULE_LICENSE("GPL");
2138 MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");