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/platform_device.h>
  11 #include <linux/timer.h>
  12 #include <linux/module.h>
  13 #include <linux/irqreturn.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/if_ether.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/net_tstamp.h>
  18 #include <linux/phy.h>
  19 #include <linux/phy/phy.h>
  20 #include <linux/delay.h>
  21 #include <linux/pinctrl/consumer.h>
  22 #include <linux/pm_runtime.h>
  23 #include <linux/gpio/consumer.h>
  24 #include <linux/of.h>
  25 #include <linux/of_mdio.h>
  26 #include <linux/of_net.h>
  27 #include <linux/of_platform.h>
  28 #include <linux/if_vlan.h>
  29 #include <linux/kmemleak.h>
  30 #include <linux/sys_soc.h>
  31
  32 #include <net/switchdev.h>
  33 #include <net/page_pool/helpers.h>
  34 #include <net/pkt_cls.h>
  35 #include <net/devlink.h>
  36
  37 #include "cpsw.h"
  38 #include "cpsw_ale.h"
  39 #include "cpsw_priv.h"
  40 #include "cpsw_sl.h"
  41 #include "cpsw_switchdev.h"
  42 #include "cpts.h"
  43 #include "davinci_cpdma.h"
  44
  45 #include <net/pkt_sched.h>
  46
  47 static int debug_level;
  48 static int ale_ageout = CPSW_ALE_AGEOUT_DEFAULT;
  49 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
  50 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
  51
  52 struct cpsw_devlink {
  53         struct cpsw_common *cpsw;
  54 };
  55
  56 enum cpsw_devlink_param_id {
  57         CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
  58         CPSW_DL_PARAM_SWITCH_MODE,
  59         CPSW_DL_PARAM_ALE_BYPASS,
  60 };
  61
  62 /* struct cpsw_common is not needed, kept here for compatibility
  63  * reasons witrh the old driver
  64  */
  65 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
  66                                  struct cpsw_priv *priv)
  67 {
  68         if (priv->emac_port == HOST_PORT_NUM)
  69                 return -1;
  70
  71         return priv->emac_port - 1;
  72 }
  73
  74 static bool cpsw_is_switch_en(struct cpsw_common *cpsw)
  75 {
  76         return !cpsw->data.dual_emac;
  77 }
  78
  79 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
  80 {
  81         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
  82         bool enable_uni = false;
  83         int i;
  84
  85         if (cpsw_is_switch_en(cpsw))
  86                 return;
  87
  88         /* Enabling promiscuous mode for one interface will be
  89          * common for both the interface as the interface shares
  90          * the same hardware resource.
  91          */
  92         for (i = 0; i < cpsw->data.slaves; i++)
  93                 if (cpsw->slaves[i].ndev &&
  94                     (cpsw->slaves[i].ndev->flags & IFF_PROMISC))
  95                         enable_uni = true;
  96
  97         if (!enable && enable_uni) {
  98                 enable = enable_uni;
  99                 dev_dbg(cpsw->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
 100         }
 101
 102         if (enable) {
 103                 /* Enable unknown unicast, reg/unreg mcast */
 104                 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 105                                      ALE_P0_UNI_FLOOD, 1);
 106
 107                 dev_dbg(cpsw->dev, "promiscuity enabled\n");
 108         } else {
 109                 /* Disable unknown unicast */
 110                 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 111                                      ALE_P0_UNI_FLOOD, 0);
 112                 dev_dbg(cpsw->dev, "promiscuity disabled\n");
 113         }
 114 }
 115
 116 /**
 117  * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
 118  * if it's not deleted
 119  * @ndev: device to sync
 120  * @addr: address to be added or deleted
 121  * @vid: vlan id, if vid < 0 set/unset address for real device
 122  * @add: add address if the flag is set or remove otherwise
 123  */
 124 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
 125                        int vid, int add)
 126 {
 127         struct cpsw_priv *priv = netdev_priv(ndev);
 128         struct cpsw_common *cpsw = priv->cpsw;
 129         int mask, flags, ret, slave_no;
 130
 131         slave_no = cpsw_slave_index(cpsw, priv);
 132         if (vid < 0)
 133                 vid = cpsw->slaves[slave_no].port_vlan;
 134
 135         mask =  ALE_PORT_HOST;
 136         flags = vid ? ALE_VLAN : 0;
 137
 138         if (add)
 139                 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
 140         else
 141                 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
 142
 143         return ret;
 144 }
 145
 146 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 147 {
 148         struct addr_sync_ctx *sync_ctx = ctx;
 149         struct netdev_hw_addr *ha;
 150         int found = 0, ret = 0;
 151
 152         if (!vdev || !(vdev->flags & IFF_UP))
 153                 return 0;
 154
 155         /* vlan address is relevant if its sync_cnt != 0 */
 156         netdev_for_each_mc_addr(ha, vdev) {
 157                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 158                         found = ha->sync_cnt;
 159                         break;
 160                 }
 161         }
 162
 163         if (found)
 164                 sync_ctx->consumed++;
 165
 166         if (sync_ctx->flush) {
 167                 if (!found)
 168                         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 169                 return 0;
 170         }
 171
 172         if (found)
 173                 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
 174
 175         return ret;
 176 }
 177
 178 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 179 {
 180         struct addr_sync_ctx sync_ctx;
 181         int ret;
 182
 183         sync_ctx.consumed = 0;
 184         sync_ctx.addr = addr;
 185         sync_ctx.ndev = ndev;
 186         sync_ctx.flush = 0;
 187
 188         ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 189         if (sync_ctx.consumed < num && !ret)
 190                 ret = cpsw_set_mc(ndev, addr, -1, 1);
 191
 192         return ret;
 193 }
 194
 195 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 196 {
 197         struct addr_sync_ctx sync_ctx;
 198
 199         sync_ctx.consumed = 0;
 200         sync_ctx.addr = addr;
 201         sync_ctx.ndev = ndev;
 202         sync_ctx.flush = 1;
 203
 204         vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 205         if (sync_ctx.consumed == num)
 206                 cpsw_set_mc(ndev, addr, -1, 0);
 207
 208         return 0;
 209 }
 210
 211 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 212 {
 213         struct addr_sync_ctx *sync_ctx = ctx;
 214         struct netdev_hw_addr *ha;
 215         int found = 0;
 216
 217         if (!vdev || !(vdev->flags & IFF_UP))
 218                 return 0;
 219
 220         /* vlan address is relevant if its sync_cnt != 0 */
 221         netdev_for_each_mc_addr(ha, vdev) {
 222                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 223                         found = ha->sync_cnt;
 224                         break;
 225                 }
 226         }
 227
 228         if (!found)
 229                 return 0;
 230
 231         sync_ctx->consumed++;
 232         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 233         return 0;
 234 }
 235
 236 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
 237 {
 238         struct addr_sync_ctx sync_ctx;
 239
 240         sync_ctx.addr = addr;
 241         sync_ctx.ndev = ndev;
 242         sync_ctx.consumed = 0;
 243
 244         vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
 245         if (sync_ctx.consumed < num)
 246                 cpsw_set_mc(ndev, addr, -1, 0);
 247
 248         return 0;
 249 }
 250
 251 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 252 {
 253         struct cpsw_priv *priv = netdev_priv(ndev);
 254         struct cpsw_common *cpsw = priv->cpsw;
 255
 256         if (ndev->flags & IFF_PROMISC) {
 257                 /* Enable promiscuous mode */
 258                 cpsw_set_promiscious(ndev, true);
 259                 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, priv->emac_port);
 260                 return;
 261         }
 262
 263         /* Disable promiscuous mode */
 264         cpsw_set_promiscious(ndev, false);
 265
 266         /* Restore allmulti on vlans if necessary */
 267         cpsw_ale_set_allmulti(cpsw->ale,
 268                               ndev->flags & IFF_ALLMULTI, priv->emac_port);
 269
 270         /* add/remove mcast address either for real netdev or for vlan */
 271         __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
 272                                cpsw_del_mc_addr);
 273 }
 274
 275 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
 276 {
 277         len += CPSW_HEADROOM_NA;
 278         len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 279
 280         return SKB_DATA_ALIGN(len);
 281 }
 282
 283 static void cpsw_rx_handler(void *token, int len, int status)
 284 {
 285         struct page *new_page, *page = token;
 286         void *pa = page_address(page);
 287         int headroom = CPSW_HEADROOM_NA;
 288         struct cpsw_meta_xdp *xmeta;
 289         struct cpsw_common *cpsw;
 290         struct net_device *ndev;
 291         int port, ch, pkt_size;
 292         struct cpsw_priv *priv;
 293         struct page_pool *pool;
 294         struct sk_buff *skb;
 295         struct xdp_buff xdp;
 296         int ret = 0;
 297         dma_addr_t dma;
 298
 299         xmeta = pa + CPSW_XMETA_OFFSET;
 300         cpsw = ndev_to_cpsw(xmeta->ndev);
 301         ndev = xmeta->ndev;
 302         pkt_size = cpsw->rx_packet_max;
 303         ch = xmeta->ch;
 304
 305         if (status >= 0) {
 306                 port = CPDMA_RX_SOURCE_PORT(status);
 307                 if (port)
 308                         ndev = cpsw->slaves[--port].ndev;
 309         }
 310
 311         priv = netdev_priv(ndev);
 312         pool = cpsw->page_pool[ch];
 313
 314         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
 315                 /* In dual emac mode check for all interfaces */
 316                 if (cpsw->usage_count && status >= 0) {
 317                         /* The packet received is for the interface which
 318                          * is already down and the other interface is up
 319                          * and running, instead of freeing which results
 320                          * in reducing of the number of rx descriptor in
 321                          * DMA engine, requeue page back to cpdma.
 322                          */
 323                         new_page = page;
 324                         goto requeue;
 325                 }
 326
 327                 /* the interface is going down, pages are purged */
 328                 page_pool_recycle_direct(pool, page);
 329                 return;
 330         }
 331
 332         new_page = page_pool_dev_alloc_pages(pool);
 333         if (unlikely(!new_page)) {
 334                 new_page = page;
 335                 ndev->stats.rx_dropped++;
 336                 goto requeue;
 337         }
 338
 339         if (priv->xdp_prog) {
 340                 int size = len;
 341
 342                 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
 343                 if (status & CPDMA_RX_VLAN_ENCAP) {
 344                         headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 345                         size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 346                 }
 347
 348                 xdp_prepare_buff(&xdp, pa, headroom, size, false);
 349
 350                 ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port, &len);
 351                 if (ret != CPSW_XDP_PASS)
 352                         goto requeue;
 353
 354                 headroom = xdp.data - xdp.data_hard_start;
 355
 356                 /* XDP prog can modify vlan tag, so can't use encap header */
 357                 status &= ~CPDMA_RX_VLAN_ENCAP;
 358         }
 359
 360         /* pass skb to netstack if no XDP prog or returned XDP_PASS */
 361         skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 362         if (!skb) {
 363                 ndev->stats.rx_dropped++;
 364                 page_pool_recycle_direct(pool, page);
 365                 goto requeue;
 366         }
 367
 368         skb->offload_fwd_mark = priv->offload_fwd_mark;
 369         skb_reserve(skb, headroom);
 370         skb_put(skb, len);
 371         skb->dev = ndev;
 372         if (status & CPDMA_RX_VLAN_ENCAP)
 373                 cpsw_rx_vlan_encap(skb);
 374         if (priv->rx_ts_enabled)
 375                 cpts_rx_timestamp(cpsw->cpts, skb);
 376         skb->protocol = eth_type_trans(skb, ndev);
 377
 378         /* mark skb for recycling */
 379         skb_mark_for_recycle(skb);
 380         netif_receive_skb(skb);
 381
 382         ndev->stats.rx_bytes += len;
 383         ndev->stats.rx_packets++;
 384
 385 requeue:
 386         xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 387         xmeta->ndev = ndev;
 388         xmeta->ch = ch;
 389
 390         dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;
 391         ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 392                                        pkt_size, 0);
 393         if (ret < 0) {
 394                 WARN_ON(ret == -ENOMEM);
 395                 page_pool_recycle_direct(pool, new_page);
 396         }
 397 }
 398
 399 static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 400                                    unsigned short vid)
 401 {
 402         struct cpsw_common *cpsw = priv->cpsw;
 403         int unreg_mcast_mask = 0;
 404         int mcast_mask;
 405         u32 port_mask;
 406         int ret;
 407
 408         port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
 409
 410         mcast_mask = ALE_PORT_HOST;
 411         if (priv->ndev->flags & IFF_ALLMULTI)
 412                 unreg_mcast_mask = mcast_mask;
 413
 414         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
 415                                 unreg_mcast_mask);
 416         if (ret != 0)
 417                 return ret;
 418
 419         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 420                                  HOST_PORT_NUM, ALE_VLAN, vid);
 421         if (ret != 0)
 422                 goto clean_vid;
 423
 424         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 425                                  mcast_mask, ALE_VLAN, vid, 0);
 426         if (ret != 0)
 427                 goto clean_vlan_ucast;
 428         return 0;
 429
 430 clean_vlan_ucast:
 431         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
 432                            HOST_PORT_NUM, ALE_VLAN, vid);
 433 clean_vid:
 434         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
 435         return ret;
 436 }
 437
 438 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
 439                                     __be16 proto, u16 vid)
 440 {
 441         struct cpsw_priv *priv = netdev_priv(ndev);
 442         struct cpsw_common *cpsw = priv->cpsw;
 443         int ret, i;
 444
 445         if (cpsw_is_switch_en(cpsw)) {
 446                 dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
 447                 return 0;
 448         }
 449
 450         if (vid == cpsw->data.default_vlan)
 451                 return 0;
 452
 453         ret = pm_runtime_resume_and_get(cpsw->dev);
 454         if (ret < 0)
 455                 return ret;
 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         cpsw_qos_clsflower_resume(priv);
 502 }
 503
 504 static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
 505 {
 506         static const char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
 507
 508         cpsw_ale_add_mcast(cpsw->ale, stpa,
 509                            ALE_PORT_HOST, ALE_SUPER, 0,
 510                            ALE_MCAST_BLOCK_LEARN_FWD);
 511 }
 512
 513 static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
 514 {
 515         int vlan = cpsw->data.default_vlan;
 516
 517         writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
 518
 519         writel(vlan, &cpsw->host_port_regs->port_vlan);
 520
 521         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 522                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 523                           ALE_PORT_1 | ALE_PORT_2);
 524
 525         cpsw_init_stp_ale_entry(cpsw);
 526
 527         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
 528         dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
 529         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
 530 }
 531
 532 static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
 533 {
 534         int vlan = cpsw->data.default_vlan;
 535
 536         writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
 537
 538         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
 539         dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
 540
 541         writel(vlan, &cpsw->host_port_regs->port_vlan);
 542
 543         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 544         /* learning make no sense in dual_mac mode */
 545         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
 546 }
 547
 548 static void cpsw_init_host_port(struct cpsw_priv *priv)
 549 {
 550         struct cpsw_common *cpsw = priv->cpsw;
 551         u32 control_reg;
 552
 553         /* soft reset the controller and initialize ale */
 554         soft_reset("cpsw", &cpsw->regs->soft_reset);
 555         cpsw_ale_start(cpsw->ale);
 556
 557         /* switch to vlan unaware mode */
 558         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 559                              CPSW_ALE_VLAN_AWARE);
 560         control_reg = readl(&cpsw->regs->control);
 561         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 562         writel(control_reg, &cpsw->regs->control);
 563
 564         /* setup host port priority mapping */
 565         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 566                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 567         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 568
 569         /* disable priority elevation */
 570         writel_relaxed(0, &cpsw->regs->ptype);
 571
 572         /* enable statistics collection only on all ports */
 573         writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 574
 575         /* Enable internal fifo flow control */
 576         writel(0x7, &cpsw->regs->flow_control);
 577
 578         if (cpsw_is_switch_en(cpsw))
 579                 cpsw_init_host_port_switch(cpsw);
 580         else
 581                 cpsw_init_host_port_dual_mac(cpsw);
 582
 583         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 584                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 585 }
 586
 587 static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
 588                                                     struct cpsw_slave *slave)
 589 {
 590         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 591         struct cpsw_common *cpsw = priv->cpsw;
 592         u32 reg;
 593
 594         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 595                CPSW2_PORT_VLAN;
 596         slave_write(slave, slave->port_vlan, reg);
 597
 598         cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 599                           port_mask, port_mask, 0);
 600         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 601                            ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
 602                            ALE_MCAST_FWD);
 603         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 604                            HOST_PORT_NUM, ALE_VLAN |
 605                            ALE_SECURE, slave->port_vlan);
 606         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 607                              ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 608         /* learning make no sense in dual_mac mode */
 609         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 610                              ALE_PORT_NOLEARN, 1);
 611 }
 612
 613 static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
 614                                                  struct cpsw_slave *slave)
 615 {
 616         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 617         struct cpsw_common *cpsw = priv->cpsw;
 618         u32 reg;
 619
 620         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 621                              ALE_PORT_DROP_UNKNOWN_VLAN, 0);
 622         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 623                              ALE_PORT_NOLEARN, 0);
 624         /* disabling SA_UPDATE required to make stp work, without this setting
 625          * Host MAC addresses will jump between ports.
 626          * As per TRM MAC address can be defined as unicast supervisory (super)
 627          * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
 628          * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
 629          * causes STP packets to be dropped due to ingress filter
 630          *      if (source address found) and (secure) and
 631          *         (receive port number != port_number))
 632          *         then discard the packet
 633          */
 634         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 635                              ALE_PORT_NO_SA_UPDATE, 1);
 636
 637         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 638                            port_mask, ALE_VLAN, slave->port_vlan,
 639                            ALE_MCAST_FWD_2);
 640         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 641                            HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
 642
 643         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 644                CPSW2_PORT_VLAN;
 645         slave_write(slave, slave->port_vlan, reg);
 646 }
 647
 648 static void cpsw_adjust_link(struct net_device *ndev)
 649 {
 650         struct cpsw_priv *priv = netdev_priv(ndev);
 651         struct cpsw_common *cpsw = priv->cpsw;
 652         struct cpsw_slave *slave;
 653         struct phy_device *phy;
 654         u32 mac_control = 0;
 655
 656         slave = &cpsw->slaves[priv->emac_port - 1];
 657         phy = slave->phy;
 658
 659         if (!phy)
 660                 return;
 661
 662         if (phy->link) {
 663                 mac_control = CPSW_SL_CTL_GMII_EN;
 664
 665                 if (phy->speed == 1000)
 666                         mac_control |= CPSW_SL_CTL_GIG;
 667                 if (phy->duplex)
 668                         mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 669
 670                 /* set speed_in input in case RMII mode is used in 100Mbps */
 671                 if (phy->speed == 100)
 672                         mac_control |= CPSW_SL_CTL_IFCTL_A;
 673                 /* in band mode only works in 10Mbps RGMII mode */
 674                 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 675                         mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 676
 677                 if (priv->rx_pause)
 678                         mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 679
 680                 if (priv->tx_pause)
 681                         mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 682
 683                 if (mac_control != slave->mac_control)
 684                         cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 685
 686                 /* enable forwarding */
 687                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 688                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 689
 690                 netif_tx_wake_all_queues(ndev);
 691
 692                 if (priv->shp_cfg_speed &&
 693                     priv->shp_cfg_speed != slave->phy->speed &&
 694                     !cpsw_shp_is_off(priv))
 695                         dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
 696         } else {
 697                 netif_tx_stop_all_queues(ndev);
 698
 699                 mac_control = 0;
 700                 /* disable forwarding */
 701                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 702                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 703
 704                 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 705
 706                 cpsw_sl_ctl_reset(slave->mac_sl);
 707         }
 708
 709         if (mac_control != slave->mac_control)
 710                 phy_print_status(phy);
 711
 712         slave->mac_control = mac_control;
 713
 714         if (phy->link && cpsw_need_resplit(cpsw))
 715                 cpsw_split_res(cpsw);
 716 }
 717
 718 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 719 {
 720         struct cpsw_common *cpsw = priv->cpsw;
 721         struct phy_device *phy;
 722
 723         cpsw_sl_reset(slave->mac_sl, 100);
 724         cpsw_sl_ctl_reset(slave->mac_sl);
 725
 726         /* setup priority mapping */
 727         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 728                           RX_PRIORITY_MAPPING);
 729
 730         switch (cpsw->version) {
 731         case CPSW_VERSION_1:
 732                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 733                 /* Increase RX FIFO size to 5 for supporting fullduplex
 734                  * flow control mode
 735                  */
 736                 slave_write(slave,
 737                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 738                             CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 739                 break;
 740         case CPSW_VERSION_2:
 741         case CPSW_VERSION_3:
 742         case CPSW_VERSION_4:
 743                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 744                 /* Increase RX FIFO size to 5 for supporting fullduplex
 745                  * flow control mode
 746                  */
 747                 slave_write(slave,
 748                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 749                             CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 750                 break;
 751         }
 752
 753         /* setup max packet size, and mac address */
 754         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 755                           cpsw->rx_packet_max);
 756         cpsw_set_slave_mac(slave, priv);
 757
 758         slave->mac_control = 0; /* no link yet */
 759
 760         if (cpsw_is_switch_en(cpsw))
 761                 cpsw_port_add_switch_def_ale_entries(priv, slave);
 762         else
 763                 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
 764
 765         if (!slave->data->phy_node)
 766                 dev_err(priv->dev, "no phy found on slave %d\n",
 767                         slave->slave_num);
 768         phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 769                              &cpsw_adjust_link, 0, slave->data->phy_if);
 770         if (!phy) {
 771                 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 772                         slave->data->phy_node,
 773                         slave->slave_num);
 774                 return;
 775         }
 776
 777         phy->mac_managed_pm = true;
 778
 779         slave->phy = phy;
 780
 781         phy_attached_info(slave->phy);
 782
 783         phy_start(slave->phy);
 784
 785         /* Configure GMII_SEL register */
 786         phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 787                          slave->data->phy_if);
 788 }
 789
 790 static int cpsw_ndo_stop(struct net_device *ndev)
 791 {
 792         struct cpsw_priv *priv = netdev_priv(ndev);
 793         struct cpsw_common *cpsw = priv->cpsw;
 794         struct cpsw_slave *slave;
 795
 796         cpsw_info(priv, ifdown, "shutting down ndev\n");
 797         slave = &cpsw->slaves[priv->emac_port - 1];
 798         if (slave->phy)
 799                 phy_stop(slave->phy);
 800
 801         netif_tx_stop_all_queues(priv->ndev);
 802
 803         if (slave->phy) {
 804                 phy_disconnect(slave->phy);
 805                 slave->phy = NULL;
 806         }
 807
 808         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 809
 810         if (cpsw->usage_count <= 1) {
 811                 napi_disable(&cpsw->napi_rx);
 812                 napi_disable(&cpsw->napi_tx);
 813                 cpts_unregister(cpsw->cpts);
 814                 cpsw_intr_disable(cpsw);
 815                 cpdma_ctlr_stop(cpsw->dma);
 816                 cpsw_ale_stop(cpsw->ale);
 817                 cpsw_destroy_xdp_rxqs(cpsw);
 818         }
 819
 820         if (cpsw_need_resplit(cpsw))
 821                 cpsw_split_res(cpsw);
 822
 823         cpsw->usage_count--;
 824         pm_runtime_put_sync(cpsw->dev);
 825         return 0;
 826 }
 827
 828 static int cpsw_ndo_open(struct net_device *ndev)
 829 {
 830         struct cpsw_priv *priv = netdev_priv(ndev);
 831         struct cpsw_common *cpsw = priv->cpsw;
 832         int ret;
 833
 834         dev_info(priv->dev, "starting ndev. mode: %s\n",
 835                  cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
 836         ret = pm_runtime_resume_and_get(cpsw->dev);
 837         if (ret < 0)
 838                 return ret;
 839
 840         /* Notify the stack of the actual queue counts. */
 841         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 842         if (ret) {
 843                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 844                 goto pm_cleanup;
 845         }
 846
 847         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 848         if (ret) {
 849                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 850                 goto pm_cleanup;
 851         }
 852
 853         /* Initialize host and slave ports */
 854         if (!cpsw->usage_count)
 855                 cpsw_init_host_port(priv);
 856         cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
 857
 858         /* initialize shared resources for every ndev */
 859         if (!cpsw->usage_count) {
 860                 /* create rxqs for both infs in dual mac as they use same pool
 861                  * and must be destroyed together when no users.
 862                  */
 863                 ret = cpsw_create_xdp_rxqs(cpsw);
 864                 if (ret < 0)
 865                         goto err_cleanup;
 866
 867                 ret = cpsw_fill_rx_channels(priv);
 868                 if (ret < 0)
 869                         goto err_cleanup;
 870
 871                 if (cpsw->cpts) {
 872                         if (cpts_register(cpsw->cpts))
 873                                 dev_err(priv->dev, "error registering cpts device\n");
 874                         else
 875                                 writel(0x10, &cpsw->wr_regs->misc_en);
 876                 }
 877
 878                 napi_enable(&cpsw->napi_rx);
 879                 napi_enable(&cpsw->napi_tx);
 880
 881                 if (cpsw->tx_irq_disabled) {
 882                         cpsw->tx_irq_disabled = false;
 883                         enable_irq(cpsw->irqs_table[1]);
 884                 }
 885
 886                 if (cpsw->rx_irq_disabled) {
 887                         cpsw->rx_irq_disabled = false;
 888                         enable_irq(cpsw->irqs_table[0]);
 889                 }
 890         }
 891
 892         cpsw_restore(priv);
 893
 894         /* Enable Interrupt pacing if configured */
 895         if (cpsw->coal_intvl != 0) {
 896                 struct ethtool_coalesce coal;
 897
 898                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 899                 cpsw_set_coalesce(ndev, &coal, NULL, NULL);
 900         }
 901
 902         cpdma_ctlr_start(cpsw->dma);
 903         cpsw_intr_enable(cpsw);
 904         cpsw->usage_count++;
 905
 906         return 0;
 907
 908 err_cleanup:
 909         cpsw_ndo_stop(ndev);
 910
 911 pm_cleanup:
 912         pm_runtime_put_sync(cpsw->dev);
 913         return ret;
 914 }
 915
 916 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 917                                        struct net_device *ndev)
 918 {
 919         struct cpsw_priv *priv = netdev_priv(ndev);
 920         struct cpsw_common *cpsw = priv->cpsw;
 921         struct cpts *cpts = cpsw->cpts;
 922         struct netdev_queue *txq;
 923         struct cpdma_chan *txch;
 924         int ret, q_idx;
 925
 926         if (skb_put_padto(skb, READ_ONCE(priv->tx_packet_min))) {
 927                 cpsw_err(priv, tx_err, "packet pad failed\n");
 928                 ndev->stats.tx_dropped++;
 929                 return NET_XMIT_DROP;
 930         }
 931
 932         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 933             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 934                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 935
 936         q_idx = skb_get_queue_mapping(skb);
 937         if (q_idx >= cpsw->tx_ch_num)
 938                 q_idx = q_idx % cpsw->tx_ch_num;
 939
 940         txch = cpsw->txv[q_idx].ch;
 941         txq = netdev_get_tx_queue(ndev, q_idx);
 942         skb_tx_timestamp(skb);
 943         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 944                                 priv->emac_port);
 945         if (unlikely(ret != 0)) {
 946                 cpsw_err(priv, tx_err, "desc submit failed\n");
 947                 goto fail;
 948         }
 949
 950         /* If there is no more tx desc left free then we need to
 951          * tell the kernel to stop sending us tx frames.
 952          */
 953         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 954                 netif_tx_stop_queue(txq);
 955
 956                 /* Barrier, so that stop_queue visible to other cpus */
 957                 smp_mb__after_atomic();
 958
 959                 if (cpdma_check_free_tx_desc(txch))
 960                         netif_tx_wake_queue(txq);
 961         }
 962
 963         return NETDEV_TX_OK;
 964 fail:
 965         ndev->stats.tx_dropped++;
 966         netif_tx_stop_queue(txq);
 967
 968         /* Barrier, so that stop_queue visible to other cpus */
 969         smp_mb__after_atomic();
 970
 971         if (cpdma_check_free_tx_desc(txch))
 972                 netif_tx_wake_queue(txq);
 973
 974         return NETDEV_TX_BUSY;
 975 }
 976
 977 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 978 {
 979         struct sockaddr *addr = (struct sockaddr *)p;
 980         struct cpsw_priv *priv = netdev_priv(ndev);
 981         struct cpsw_common *cpsw = priv->cpsw;
 982         int ret, slave_no;
 983         int flags = 0;
 984         u16 vid = 0;
 985
 986         slave_no = cpsw_slave_index(cpsw, priv);
 987         if (!is_valid_ether_addr(addr->sa_data))
 988                 return -EADDRNOTAVAIL;
 989
 990         ret = pm_runtime_resume_and_get(cpsw->dev);
 991         if (ret < 0)
 992                 return ret;
 993
 994         vid = cpsw->slaves[slave_no].port_vlan;
 995         flags = ALE_VLAN | ALE_SECURE;
 996
 997         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 998                            flags, vid);
 999         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
1000                            flags, vid);
1001
1002         ether_addr_copy(priv->mac_addr, addr->sa_data);
1003         eth_hw_addr_set(ndev, priv->mac_addr);
1004         cpsw_set_slave_mac(&cpsw->slaves[slave_no], priv);
1005
1006         pm_runtime_put(cpsw->dev);
1007
1008         return 0;
1009 }
1010
1011 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1012                                      __be16 proto, u16 vid)
1013 {
1014         struct cpsw_priv *priv = netdev_priv(ndev);
1015         struct cpsw_common *cpsw = priv->cpsw;
1016         int ret;
1017         int i;
1018
1019         if (cpsw_is_switch_en(cpsw)) {
1020                 dev_dbg(cpsw->dev, "ndo del vlan is called in switch mode\n");
1021                 return 0;
1022         }
1023
1024         if (vid == cpsw->data.default_vlan)
1025                 return 0;
1026
1027         ret = pm_runtime_resume_and_get(cpsw->dev);
1028         if (ret < 0)
1029                 return ret;
1030
1031         /* reset the return code as pm_runtime_get_sync() can return
1032          * non zero values as well.
1033          */
1034         ret = 0;
1035         for (i = 0; i < cpsw->data.slaves; i++) {
1036                 if (cpsw->slaves[i].ndev &&
1037                     vid == cpsw->slaves[i].port_vlan) {
1038                         ret = -EINVAL;
1039                         goto err;
1040                 }
1041         }
1042
1043         dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1044         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1045         if (ret)
1046                 dev_err(priv->dev, "cpsw_ale_del_vlan() failed: ret %d\n", ret);
1047         ret = cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1048                                  HOST_PORT_NUM, ALE_VLAN, vid);
1049         if (ret)
1050                 dev_err(priv->dev, "cpsw_ale_del_ucast() failed: ret %d\n",
1051                         ret);
1052         ret = cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1053                                  0, ALE_VLAN, vid);
1054         if (ret)
1055                 dev_err(priv->dev, "cpsw_ale_del_mcast failed. ret %d\n",
1056                         ret);
1057         cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1058         ret = 0;
1059 err:
1060         pm_runtime_put(cpsw->dev);
1061         return ret;
1062 }
1063
1064 static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
1065                                        size_t len)
1066 {
1067         struct cpsw_priv *priv = netdev_priv(ndev);
1068         int err;
1069
1070         err = snprintf(name, len, "p%d", priv->emac_port);
1071
1072         if (err >= len)
1073                 return -EINVAL;
1074
1075         return 0;
1076 }
1077
1078 #ifdef CONFIG_NET_POLL_CONTROLLER
1079 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1080 {
1081         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1082
1083         cpsw_intr_disable(cpsw);
1084         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1085         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1086         cpsw_intr_enable(cpsw);
1087 }
1088 #endif
1089
1090 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1091                              struct xdp_frame **frames, u32 flags)
1092 {
1093         struct cpsw_priv *priv = netdev_priv(ndev);
1094         struct xdp_frame *xdpf;
1095         int i, nxmit = 0;
1096
1097         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1098                 return -EINVAL;
1099
1100         for (i = 0; i < n; i++) {
1101                 xdpf = frames[i];
1102                 if (xdpf->len < READ_ONCE(priv->tx_packet_min))
1103                         break;
1104
1105                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
1106                         break;
1107                 nxmit++;
1108         }
1109
1110         return nxmit;
1111 }
1112
1113 static int cpsw_get_port_parent_id(struct net_device *ndev,
1114                                    struct netdev_phys_item_id *ppid)
1115 {
1116         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1117
1118         ppid->id_len = sizeof(cpsw->base_mac);
1119         memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
1120
1121         return 0;
1122 }
1123
1124 static const struct net_device_ops cpsw_netdev_ops = {
1125         .ndo_open               = cpsw_ndo_open,
1126         .ndo_stop               = cpsw_ndo_stop,
1127         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1128         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1129         .ndo_eth_ioctl          = cpsw_ndo_ioctl,
1130         .ndo_validate_addr      = eth_validate_addr,
1131         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1132         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1133         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1134 #ifdef CONFIG_NET_POLL_CONTROLLER
1135         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1136 #endif
1137         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1138         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1139         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1140         .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
1141         .ndo_bpf                = cpsw_ndo_bpf,
1142         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1143         .ndo_get_port_parent_id = cpsw_get_port_parent_id,
1144 };
1145
1146 static void cpsw_get_drvinfo(struct net_device *ndev,
1147                              struct ethtool_drvinfo *info)
1148 {
1149         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1150         struct platform_device *pdev;
1151
1152         pdev = to_platform_device(cpsw->dev);
1153         strscpy(info->driver, "cpsw-switch", sizeof(info->driver));
1154         strscpy(info->version, "2.0", sizeof(info->version));
1155         strscpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1156 }
1157
1158 static int cpsw_set_pauseparam(struct net_device *ndev,
1159                                struct ethtool_pauseparam *pause)
1160 {
1161         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1162         struct cpsw_priv *priv = netdev_priv(ndev);
1163         int slave_no;
1164
1165         slave_no = cpsw_slave_index(cpsw, priv);
1166         if (!cpsw->slaves[slave_no].phy)
1167                 return -EINVAL;
1168
1169         if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
1170                 return -EINVAL;
1171
1172         priv->rx_pause = pause->rx_pause ? true : false;
1173         priv->tx_pause = pause->tx_pause ? true : false;
1174
1175         phy_set_asym_pause(cpsw->slaves[slave_no].phy,
1176                            priv->rx_pause, priv->tx_pause);
1177
1178         return 0;
1179 }
1180
1181 static int cpsw_set_channels(struct net_device *ndev,
1182                              struct ethtool_channels *chs)
1183 {
1184         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1185 }
1186
1187 static const struct ethtool_ops cpsw_ethtool_ops = {
1188         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1189         .get_drvinfo            = cpsw_get_drvinfo,
1190         .get_msglevel           = cpsw_get_msglevel,
1191         .set_msglevel           = cpsw_set_msglevel,
1192         .get_link               = ethtool_op_get_link,
1193         .get_ts_info            = cpsw_get_ts_info,
1194         .get_coalesce           = cpsw_get_coalesce,
1195         .set_coalesce           = cpsw_set_coalesce,
1196         .get_sset_count         = cpsw_get_sset_count,
1197         .get_strings            = cpsw_get_strings,
1198         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1199         .get_pauseparam         = cpsw_get_pauseparam,
1200         .set_pauseparam         = cpsw_set_pauseparam,
1201         .get_wol                = cpsw_get_wol,
1202         .set_wol                = cpsw_set_wol,
1203         .get_regs_len           = cpsw_get_regs_len,
1204         .get_regs               = cpsw_get_regs,
1205         .begin                  = cpsw_ethtool_op_begin,
1206         .complete               = cpsw_ethtool_op_complete,
1207         .get_channels           = cpsw_get_channels,
1208         .set_channels           = cpsw_set_channels,
1209         .get_link_ksettings     = cpsw_get_link_ksettings,
1210         .set_link_ksettings     = cpsw_set_link_ksettings,
1211         .get_eee                = cpsw_get_eee,
1212         .set_eee                = cpsw_set_eee,
1213         .nway_reset             = cpsw_nway_reset,
1214         .get_ringparam          = cpsw_get_ringparam,
1215         .set_ringparam          = cpsw_set_ringparam,
1216 };
1217
1218 static int cpsw_probe_dt(struct cpsw_common *cpsw)
1219 {
1220         struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
1221         struct cpsw_platform_data *data = &cpsw->data;
1222         struct device *dev = cpsw->dev;
1223         int ret;
1224         u32 prop;
1225
1226         if (!node)
1227                 return -EINVAL;
1228
1229         tmp_node = of_get_child_by_name(node, "ethernet-ports");
1230         if (!tmp_node)
1231                 return -ENOENT;
1232         data->slaves = of_get_child_count(tmp_node);
1233         if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
1234                 of_node_put(tmp_node);
1235                 return -ENOENT;
1236         }
1237
1238         data->active_slave = 0;
1239         data->channels = CPSW_MAX_QUEUES;
1240         data->dual_emac = true;
1241         data->bd_ram_size = CPSW_BD_RAM_SIZE;
1242         data->mac_control = 0;
1243
1244         data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
1245                                         sizeof(struct cpsw_slave_data),
1246                                         GFP_KERNEL);
1247         if (!data->slave_data) {
1248                 of_node_put(tmp_node);
1249                 return -ENOMEM;
1250         }
1251
1252         /* Populate all the child nodes here...
1253          */
1254         ret = devm_of_platform_populate(dev);
1255         /* We do not want to force this, as in some cases may not have child */
1256         if (ret)
1257                 dev_warn(dev, "Doesn't have any child node\n");
1258
1259         for_each_child_of_node(tmp_node, port_np) {
1260                 struct cpsw_slave_data *slave_data;
1261                 u32 port_id;
1262
1263                 ret = of_property_read_u32(port_np, "reg", &port_id);
1264                 if (ret < 0) {
1265                         dev_err(dev, "%pOF error reading port_id %d\n",
1266                                 port_np, ret);
1267                         goto err_node_put;
1268                 }
1269
1270                 if (!port_id || port_id > CPSW_SLAVE_PORTS_NUM) {
1271                         dev_err(dev, "%pOF has invalid port_id %u\n",
1272                                 port_np, port_id);
1273                         ret = -EINVAL;
1274                         goto err_node_put;
1275                 }
1276
1277                 slave_data = &data->slave_data[port_id - 1];
1278
1279                 slave_data->disabled = !of_device_is_available(port_np);
1280                 if (slave_data->disabled)
1281                         continue;
1282
1283                 slave_data->slave_node = port_np;
1284                 slave_data->ifphy = devm_of_phy_get(dev, port_np, NULL);
1285                 if (IS_ERR(slave_data->ifphy)) {
1286                         ret = PTR_ERR(slave_data->ifphy);
1287                         dev_err(dev, "%pOF: Error retrieving port phy: %d\n",
1288                                 port_np, ret);
1289                         goto err_node_put;
1290                 }
1291
1292                 if (of_phy_is_fixed_link(port_np)) {
1293                         ret = of_phy_register_fixed_link(port_np);
1294                         if (ret) {
1295                                 dev_err_probe(dev, ret, "%pOF failed to register fixed-link phy\n",
1296                                               port_np);
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         of_node_put(tmp_node);
1344         return ret;
1345 }
1346
1347 static void cpsw_remove_dt(struct cpsw_common *cpsw)
1348 {
1349         struct cpsw_platform_data *data = &cpsw->data;
1350         int i = 0;
1351
1352         for (i = 0; i < cpsw->data.slaves; i++) {
1353                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1354                 struct device_node *port_np = slave_data->phy_node;
1355
1356                 if (port_np) {
1357                         if (of_phy_is_fixed_link(port_np))
1358                                 of_phy_deregister_fixed_link(port_np);
1359
1360                         of_node_put(port_np);
1361                 }
1362         }
1363 }
1364
1365 static int cpsw_create_ports(struct cpsw_common *cpsw)
1366 {
1367         struct cpsw_platform_data *data = &cpsw->data;
1368         struct net_device *ndev, *napi_ndev = NULL;
1369         struct device *dev = cpsw->dev;
1370         struct cpsw_priv *priv;
1371         int ret = 0, i = 0;
1372
1373         for (i = 0; i < cpsw->data.slaves; i++) {
1374                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1375
1376                 if (slave_data->disabled)
1377                         continue;
1378
1379                 ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1380                                                CPSW_MAX_QUEUES,
1381                                                CPSW_MAX_QUEUES);
1382                 if (!ndev) {
1383                         dev_err(dev, "error allocating net_device\n");
1384                         return -ENOMEM;
1385                 }
1386
1387                 priv = netdev_priv(ndev);
1388                 priv->cpsw = cpsw;
1389                 priv->ndev = ndev;
1390                 priv->dev  = dev;
1391                 priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1392                 priv->emac_port = i + 1;
1393                 priv->tx_packet_min = CPSW_MIN_PACKET_SIZE;
1394
1395                 if (is_valid_ether_addr(slave_data->mac_addr)) {
1396                         ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1397                         dev_info(cpsw->dev, "Detected MACID = %pM\n",
1398                                  priv->mac_addr);
1399                 } else {
1400                         eth_random_addr(slave_data->mac_addr);
1401                         dev_info(cpsw->dev, "Random MACID = %pM\n",
1402                                  priv->mac_addr);
1403                 }
1404                 eth_hw_addr_set(ndev, slave_data->mac_addr);
1405                 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1406
1407                 cpsw->slaves[i].ndev = ndev;
1408
1409                 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1410                                   NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL | NETIF_F_HW_TC;
1411
1412                 ndev->xdp_features = NETDEV_XDP_ACT_BASIC |
1413                                      NETDEV_XDP_ACT_REDIRECT |
1414                                      NETDEV_XDP_ACT_NDO_XMIT;
1415
1416                 ndev->netdev_ops = &cpsw_netdev_ops;
1417                 ndev->ethtool_ops = &cpsw_ethtool_ops;
1418                 SET_NETDEV_DEV(ndev, dev);
1419
1420                 if (!napi_ndev) {
1421                         /* CPSW Host port CPDMA interface is shared between
1422                          * ports and there is only one TX and one RX IRQs
1423                          * available for all possible TX and RX channels
1424                          * accordingly.
1425                          */
1426                         netif_napi_add(ndev, &cpsw->napi_rx,
1427                                        cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll);
1428                         netif_napi_add_tx(ndev, &cpsw->napi_tx,
1429                                           cpsw->quirk_irq ?
1430                                           cpsw_tx_poll : cpsw_tx_mq_poll);
1431                 }
1432
1433                 napi_ndev = ndev;
1434         }
1435
1436         return ret;
1437 }
1438
1439 static void cpsw_unregister_ports(struct cpsw_common *cpsw)
1440 {
1441         int i = 0;
1442
1443         for (i = 0; i < cpsw->data.slaves; i++) {
1444                 if (!cpsw->slaves[i].ndev)
1445                         continue;
1446
1447                 unregister_netdev(cpsw->slaves[i].ndev);
1448         }
1449 }
1450
1451 static int cpsw_register_ports(struct cpsw_common *cpsw)
1452 {
1453         int ret = 0, i = 0;
1454
1455         for (i = 0; i < cpsw->data.slaves; i++) {
1456                 if (!cpsw->slaves[i].ndev)
1457                         continue;
1458
1459                 /* register the network device */
1460                 ret = register_netdev(cpsw->slaves[i].ndev);
1461                 if (ret) {
1462                         dev_err(cpsw->dev,
1463                                 "cpsw: err registering net device%d\n", i);
1464                         cpsw->slaves[i].ndev = NULL;
1465                         break;
1466                 }
1467         }
1468
1469         if (ret)
1470                 cpsw_unregister_ports(cpsw);
1471         return ret;
1472 }
1473
1474 bool cpsw_port_dev_check(const struct net_device *ndev)
1475 {
1476         if (ndev->netdev_ops == &cpsw_netdev_ops) {
1477                 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1478
1479                 return !cpsw->data.dual_emac;
1480         }
1481
1482         return false;
1483 }
1484
1485 static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
1486 {
1487         int set_val = 0;
1488         int i;
1489
1490         if (!cpsw->ale_bypass &&
1491             (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
1492                 set_val = 1;
1493
1494         dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
1495
1496         for (i = 0; i < cpsw->data.slaves; i++) {
1497                 struct net_device *sl_ndev = cpsw->slaves[i].ndev;
1498                 struct cpsw_priv *priv = netdev_priv(sl_ndev);
1499
1500                 priv->offload_fwd_mark = set_val;
1501         }
1502 }
1503
1504 static int cpsw_netdevice_port_link(struct net_device *ndev,
1505                                     struct net_device *br_ndev,
1506                                     struct netlink_ext_ack *extack)
1507 {
1508         struct cpsw_priv *priv = netdev_priv(ndev);
1509         struct cpsw_common *cpsw = priv->cpsw;
1510         int err;
1511
1512         if (!cpsw->br_members) {
1513                 cpsw->hw_bridge_dev = br_ndev;
1514         } else {
1515                 /* This is adding the port to a second bridge, this is
1516                  * unsupported
1517                  */
1518                 if (cpsw->hw_bridge_dev != br_ndev)
1519                         return -EOPNOTSUPP;
1520         }
1521
1522         err = switchdev_bridge_port_offload(ndev, ndev, NULL, NULL, NULL,
1523                                             false, extack);
1524         if (err)
1525                 return err;
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         switchdev_bridge_port_unoffload(ndev, NULL, NULL, NULL);
1540
1541         cpsw->br_members &= ~BIT(priv->emac_port);
1542
1543         cpsw_port_offload_fwd_mark_update(cpsw);
1544
1545         if (!cpsw->br_members)
1546                 cpsw->hw_bridge_dev = NULL;
1547 }
1548
1549 /* netdev notifier */
1550 static int cpsw_netdevice_event(struct notifier_block *unused,
1551                                 unsigned long event, void *ptr)
1552 {
1553         struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);
1554         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
1555         struct netdev_notifier_changeupper_info *info;
1556         int ret = NOTIFY_DONE;
1557
1558         if (!cpsw_port_dev_check(ndev))
1559                 return NOTIFY_DONE;
1560
1561         switch (event) {
1562         case NETDEV_CHANGEUPPER:
1563                 info = ptr;
1564
1565                 if (netif_is_bridge_master(info->upper_dev)) {
1566                         if (info->linking)
1567                                 ret = cpsw_netdevice_port_link(ndev,
1568                                                                info->upper_dev,
1569                                                                extack);
1570                         else
1571                                 cpsw_netdevice_port_unlink(ndev);
1572                 }
1573                 break;
1574         default:
1575                 return NOTIFY_DONE;
1576         }
1577
1578         return notifier_from_errno(ret);
1579 }
1580
1581 static struct notifier_block cpsw_netdevice_nb __read_mostly = {
1582         .notifier_call = cpsw_netdevice_event,
1583 };
1584
1585 static int cpsw_register_notifiers(struct cpsw_common *cpsw)
1586 {
1587         int ret = 0;
1588
1589         ret = register_netdevice_notifier(&cpsw_netdevice_nb);
1590         if (ret) {
1591                 dev_err(cpsw->dev, "can't register netdevice notifier\n");
1592                 return ret;
1593         }
1594
1595         ret = cpsw_switchdev_register_notifiers(cpsw);
1596         if (ret)
1597                 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1598
1599         return ret;
1600 }
1601
1602 static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
1603 {
1604         cpsw_switchdev_unregister_notifiers(cpsw);
1605         unregister_netdevice_notifier(&cpsw_netdevice_nb);
1606 }
1607
1608 static const struct devlink_ops cpsw_devlink_ops = {
1609 };
1610
1611 static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
1612                                    struct devlink_param_gset_ctx *ctx)
1613 {
1614         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1615         struct cpsw_common *cpsw = dl_priv->cpsw;
1616
1617         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1618
1619         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1620                 return  -EOPNOTSUPP;
1621
1622         ctx->val.vbool = !cpsw->data.dual_emac;
1623
1624         return 0;
1625 }
1626
1627 static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
1628                                    struct devlink_param_gset_ctx *ctx)
1629 {
1630         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1631         struct cpsw_common *cpsw = dl_priv->cpsw;
1632         int vlan = cpsw->data.default_vlan;
1633         bool switch_en = ctx->val.vbool;
1634         bool if_running = false;
1635         int i;
1636
1637         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1638
1639         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1640                 return  -EOPNOTSUPP;
1641
1642         if (switch_en == !cpsw->data.dual_emac)
1643                 return 0;
1644
1645         if (!switch_en && cpsw->br_members) {
1646                 dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
1647                 return -EINVAL;
1648         }
1649
1650         rtnl_lock();
1651
1652         for (i = 0; i < cpsw->data.slaves; i++) {
1653                 struct cpsw_slave *slave = &cpsw->slaves[i];
1654                 struct net_device *sl_ndev = slave->ndev;
1655
1656                 if (!sl_ndev || !netif_running(sl_ndev))
1657                         continue;
1658
1659                 if_running = true;
1660         }
1661
1662         if (!if_running) {
1663                 /* all ndevs are down */
1664                 cpsw->data.dual_emac = !switch_en;
1665                 for (i = 0; i < cpsw->data.slaves; i++) {
1666                         struct cpsw_slave *slave = &cpsw->slaves[i];
1667                         struct net_device *sl_ndev = slave->ndev;
1668
1669                         if (!sl_ndev)
1670                                 continue;
1671
1672                         if (switch_en)
1673                                 vlan = cpsw->data.default_vlan;
1674                         else
1675                                 vlan = slave->data->dual_emac_res_vlan;
1676                         slave->port_vlan = vlan;
1677                 }
1678                 goto exit;
1679         }
1680
1681         if (switch_en) {
1682                 dev_info(cpsw->dev, "Enable switch mode\n");
1683
1684                 /* enable bypass - no forwarding; all traffic goes to Host */
1685                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1686
1687                 /* clean up ALE table */
1688                 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1689                 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1690
1691                 cpsw_init_host_port_switch(cpsw);
1692
1693                 for (i = 0; i < cpsw->data.slaves; i++) {
1694                         struct cpsw_slave *slave = &cpsw->slaves[i];
1695                         struct net_device *sl_ndev = slave->ndev;
1696                         struct cpsw_priv *priv;
1697
1698                         if (!sl_ndev)
1699                                 continue;
1700
1701                         priv = netdev_priv(sl_ndev);
1702                         slave->port_vlan = vlan;
1703                         WRITE_ONCE(priv->tx_packet_min, CPSW_MIN_PACKET_SIZE_VLAN);
1704                         if (netif_running(sl_ndev))
1705                                 cpsw_port_add_switch_def_ale_entries(priv,
1706                                                                      slave);
1707                 }
1708
1709                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1710                 cpsw->data.dual_emac = false;
1711         } else {
1712                 dev_info(cpsw->dev, "Disable switch mode\n");
1713
1714                 /* enable bypass - no forwarding; all traffic goes to Host */
1715                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 1);
1716
1717                 cpsw_ale_control_set(cpsw->ale, 0, ALE_CLEAR, 1);
1718                 cpsw_ale_control_get(cpsw->ale, 0, ALE_AGEOUT);
1719
1720                 cpsw_init_host_port_dual_mac(cpsw);
1721
1722                 for (i = 0; i < cpsw->data.slaves; i++) {
1723                         struct cpsw_slave *slave = &cpsw->slaves[i];
1724                         struct net_device *sl_ndev = slave->ndev;
1725                         struct cpsw_priv *priv;
1726
1727                         if (!sl_ndev)
1728                                 continue;
1729
1730                         priv = netdev_priv(slave->ndev);
1731                         slave->port_vlan = slave->data->dual_emac_res_vlan;
1732                         WRITE_ONCE(priv->tx_packet_min, CPSW_MIN_PACKET_SIZE);
1733                         cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
1734                 }
1735
1736                 cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS, 0);
1737                 cpsw->data.dual_emac = true;
1738         }
1739 exit:
1740         rtnl_unlock();
1741
1742         return 0;
1743 }
1744
1745 static int cpsw_dl_ale_ctrl_get(struct devlink *dl, u32 id,
1746                                 struct devlink_param_gset_ctx *ctx)
1747 {
1748         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1749         struct cpsw_common *cpsw = dl_priv->cpsw;
1750
1751         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1752
1753         switch (id) {
1754         case CPSW_DL_PARAM_ALE_BYPASS:
1755                 ctx->val.vbool = cpsw_ale_control_get(cpsw->ale, 0, ALE_BYPASS);
1756                 break;
1757         default:
1758                 return -EOPNOTSUPP;
1759         }
1760
1761         return 0;
1762 }
1763
1764 static int cpsw_dl_ale_ctrl_set(struct devlink *dl, u32 id,
1765                                 struct devlink_param_gset_ctx *ctx)
1766 {
1767         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1768         struct cpsw_common *cpsw = dl_priv->cpsw;
1769         int ret = -EOPNOTSUPP;
1770
1771         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1772
1773         switch (id) {
1774         case CPSW_DL_PARAM_ALE_BYPASS:
1775                 ret = cpsw_ale_control_set(cpsw->ale, 0, ALE_BYPASS,
1776                                            ctx->val.vbool);
1777                 if (!ret) {
1778                         cpsw->ale_bypass = ctx->val.vbool;
1779                         cpsw_port_offload_fwd_mark_update(cpsw);
1780                 }
1781                 break;
1782         default:
1783                 return -EOPNOTSUPP;
1784         }
1785
1786         return 0;
1787 }
1788
1789 static const struct devlink_param cpsw_devlink_params[] = {
1790         DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_SWITCH_MODE,
1791                              "switch_mode", DEVLINK_PARAM_TYPE_BOOL,
1792                              BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1793                              cpsw_dl_switch_mode_get, cpsw_dl_switch_mode_set,
1794                              NULL),
1795         DEVLINK_PARAM_DRIVER(CPSW_DL_PARAM_ALE_BYPASS,
1796                              "ale_bypass", DEVLINK_PARAM_TYPE_BOOL,
1797                              BIT(DEVLINK_PARAM_CMODE_RUNTIME),
1798                              cpsw_dl_ale_ctrl_get, cpsw_dl_ale_ctrl_set, NULL),
1799 };
1800
1801 static int cpsw_register_devlink(struct cpsw_common *cpsw)
1802 {
1803         struct device *dev = cpsw->dev;
1804         struct cpsw_devlink *dl_priv;
1805         int ret = 0;
1806
1807         cpsw->devlink = devlink_alloc(&cpsw_devlink_ops, sizeof(*dl_priv), dev);
1808         if (!cpsw->devlink)
1809                 return -ENOMEM;
1810
1811         dl_priv = devlink_priv(cpsw->devlink);
1812         dl_priv->cpsw = cpsw;
1813
1814         ret = devlink_params_register(cpsw->devlink, cpsw_devlink_params,
1815                                       ARRAY_SIZE(cpsw_devlink_params));
1816         if (ret) {
1817                 dev_err(dev, "DL params reg fail ret:%d\n", ret);
1818                 goto dl_unreg;
1819         }
1820
1821         devlink_register(cpsw->devlink);
1822         return ret;
1823
1824 dl_unreg:
1825         devlink_free(cpsw->devlink);
1826         return ret;
1827 }
1828
1829 static void cpsw_unregister_devlink(struct cpsw_common *cpsw)
1830 {
1831         devlink_unregister(cpsw->devlink);
1832         devlink_params_unregister(cpsw->devlink, cpsw_devlink_params,
1833                                   ARRAY_SIZE(cpsw_devlink_params));
1834         devlink_free(cpsw->devlink);
1835 }
1836
1837 static const struct of_device_id cpsw_of_mtable[] = {
1838         { .compatible = "ti,cpsw-switch"},
1839         { .compatible = "ti,am335x-cpsw-switch"},
1840         { .compatible = "ti,am4372-cpsw-switch"},
1841         { .compatible = "ti,dra7-cpsw-switch"},
1842         { /* sentinel */ },
1843 };
1844 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1845
1846 static const struct soc_device_attribute cpsw_soc_devices[] = {
1847         { .family = "AM33xx", .revision = "ES1.0"},
1848         { /* sentinel */ }
1849 };
1850
1851 static int cpsw_probe(struct platform_device *pdev)
1852 {
1853         const struct soc_device_attribute *soc;
1854         struct device *dev = &pdev->dev;
1855         struct cpsw_common *cpsw;
1856         struct resource *ss_res;
1857         struct gpio_descs *mode;
1858         void __iomem *ss_regs;
1859         int ret = 0, ch;
1860         struct clk *clk;
1861         int irq;
1862
1863         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1864         if (!cpsw)
1865                 return -ENOMEM;
1866
1867         cpsw_slave_index = cpsw_slave_index_priv;
1868
1869         cpsw->dev = dev;
1870
1871         cpsw->slaves = devm_kcalloc(dev,
1872                                     CPSW_SLAVE_PORTS_NUM,
1873                                     sizeof(struct cpsw_slave),
1874                                     GFP_KERNEL);
1875         if (!cpsw->slaves)
1876                 return -ENOMEM;
1877
1878         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1879         if (IS_ERR(mode)) {
1880                 ret = PTR_ERR(mode);
1881                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1882                 return ret;
1883         }
1884
1885         clk = devm_clk_get(dev, "fck");
1886         if (IS_ERR(clk)) {
1887                 ret = PTR_ERR(clk);
1888                 dev_err(dev, "fck is not found %d\n", ret);
1889                 return ret;
1890         }
1891         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1892
1893         ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1894         if (IS_ERR(ss_regs)) {
1895                 ret = PTR_ERR(ss_regs);
1896                 return ret;
1897         }
1898         cpsw->regs = ss_regs;
1899
1900         irq = platform_get_irq_byname(pdev, "rx");
1901         if (irq < 0)
1902                 return irq;
1903         cpsw->irqs_table[0] = irq;
1904
1905         irq = platform_get_irq_byname(pdev, "tx");
1906         if (irq < 0)
1907                 return irq;
1908         cpsw->irqs_table[1] = irq;
1909
1910         irq = platform_get_irq_byname(pdev, "misc");
1911         if (irq <= 0)
1912                 return irq;
1913         cpsw->misc_irq = irq;
1914
1915         platform_set_drvdata(pdev, cpsw);
1916         /* This may be required here for child devices. */
1917         pm_runtime_enable(dev);
1918
1919         /* Need to enable clocks with runtime PM api to access module
1920          * registers
1921          */
1922         ret = pm_runtime_resume_and_get(dev);
1923         if (ret < 0) {
1924                 pm_runtime_disable(dev);
1925                 return ret;
1926         }
1927
1928         ret = cpsw_probe_dt(cpsw);
1929         if (ret)
1930                 goto clean_dt_ret;
1931
1932         soc = soc_device_match(cpsw_soc_devices);
1933         if (soc)
1934                 cpsw->quirk_irq = true;
1935
1936         cpsw->rx_packet_max = rx_packet_max;
1937         cpsw->descs_pool_size = descs_pool_size;
1938         eth_random_addr(cpsw->base_mac);
1939
1940         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1941                                (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
1942                                descs_pool_size);
1943         if (ret)
1944                 goto clean_dt_ret;
1945
1946         cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
1947                         ss_regs + CPSW1_WR_OFFSET :
1948                         ss_regs + CPSW2_WR_OFFSET;
1949
1950         ch = cpsw->quirk_irq ? 0 : 7;
1951         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1952         if (IS_ERR(cpsw->txv[0].ch)) {
1953                 dev_err(dev, "error initializing tx dma channel\n");
1954                 ret = PTR_ERR(cpsw->txv[0].ch);
1955                 goto clean_cpts;
1956         }
1957
1958         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1959         if (IS_ERR(cpsw->rxv[0].ch)) {
1960                 dev_err(dev, "error initializing rx dma channel\n");
1961                 ret = PTR_ERR(cpsw->rxv[0].ch);
1962                 goto clean_cpts;
1963         }
1964         cpsw_split_res(cpsw);
1965
1966         /* setup netdevs */
1967         ret = cpsw_create_ports(cpsw);
1968         if (ret)
1969                 goto clean_unregister_netdev;
1970
1971         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1972          * MISC IRQs which are always kept disabled with this driver so
1973          * we will not request them.
1974          *
1975          * If anyone wants to implement support for those, make sure to
1976          * first request and append them to irqs_table array.
1977          */
1978
1979         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1980                                0, dev_name(dev), cpsw);
1981         if (ret < 0) {
1982                 dev_err(dev, "error attaching irq (%d)\n", ret);
1983                 goto clean_unregister_netdev;
1984         }
1985
1986         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_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         if (!cpsw->cpts)
1994                 goto skip_cpts;
1995
1996         ret = devm_request_irq(dev, cpsw->misc_irq, cpsw_misc_interrupt,
1997                                0, dev_name(&pdev->dev), cpsw);
1998         if (ret < 0) {
1999                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
2000                 goto clean_unregister_netdev;
2001         }
2002
2003         /* Enable misc CPTS evnt_pend IRQ */
2004         cpts_set_irqpoll(cpsw->cpts, false);
2005
2006 skip_cpts:
2007         ret = cpsw_register_notifiers(cpsw);
2008         if (ret)
2009                 goto clean_unregister_netdev;
2010
2011         ret = cpsw_register_devlink(cpsw);
2012         if (ret)
2013                 goto clean_unregister_notifiers;
2014
2015         ret = cpsw_register_ports(cpsw);
2016         if (ret)
2017                 goto clean_unregister_notifiers;
2018
2019         dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
2020                    &ss_res->start, descs_pool_size,
2021                    cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
2022                    CPSW_MINOR_VERSION(cpsw->version),
2023                    CPSW_RTL_VERSION(cpsw->version));
2024
2025         pm_runtime_put(dev);
2026
2027         return 0;
2028
2029 clean_unregister_notifiers:
2030         cpsw_unregister_notifiers(cpsw);
2031 clean_unregister_netdev:
2032         cpsw_unregister_ports(cpsw);
2033 clean_cpts:
2034         cpts_release(cpsw->cpts);
2035         cpdma_ctlr_destroy(cpsw->dma);
2036 clean_dt_ret:
2037         cpsw_remove_dt(cpsw);
2038         pm_runtime_put_sync(dev);
2039         pm_runtime_disable(dev);
2040         return ret;
2041 }
2042
2043 static void cpsw_remove(struct platform_device *pdev)
2044 {
2045         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
2046         int ret;
2047
2048         ret = pm_runtime_resume_and_get(&pdev->dev);
2049         if (ret < 0) {
2050                 /* Note, if this error path is taken, we're leaking some
2051                  * resources.
2052                  */
2053                 dev_err(&pdev->dev, "Failed to resume device (%pe)\n",
2054                         ERR_PTR(ret));
2055                 return;
2056         }
2057
2058         cpsw_unregister_notifiers(cpsw);
2059         cpsw_unregister_devlink(cpsw);
2060         cpsw_unregister_ports(cpsw);
2061
2062         cpts_release(cpsw->cpts);
2063         cpdma_ctlr_destroy(cpsw->dma);
2064         cpsw_remove_dt(cpsw);
2065         pm_runtime_put_sync(&pdev->dev);
2066         pm_runtime_disable(&pdev->dev);
2067 }
2068
2069 static int __maybe_unused cpsw_suspend(struct device *dev)
2070 {
2071         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2072         int i;
2073
2074         rtnl_lock();
2075
2076         for (i = 0; i < cpsw->data.slaves; i++) {
2077                 struct net_device *ndev = cpsw->slaves[i].ndev;
2078
2079                 if (!(ndev && netif_running(ndev)))
2080                         continue;
2081
2082                 cpsw_ndo_stop(ndev);
2083         }
2084
2085         rtnl_unlock();
2086
2087         /* Select sleep pin state */
2088         pinctrl_pm_select_sleep_state(dev);
2089
2090         return 0;
2091 }
2092
2093 static int __maybe_unused cpsw_resume(struct device *dev)
2094 {
2095         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2096         int i;
2097
2098         /* Select default pin state */
2099         pinctrl_pm_select_default_state(dev);
2100
2101         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
2102         rtnl_lock();
2103
2104         for (i = 0; i < cpsw->data.slaves; i++) {
2105                 struct net_device *ndev = cpsw->slaves[i].ndev;
2106
2107                 if (!(ndev && netif_running(ndev)))
2108                         continue;
2109
2110                 cpsw_ndo_open(ndev);
2111         }
2112
2113         rtnl_unlock();
2114
2115         return 0;
2116 }
2117
2118 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2119
2120 static struct platform_driver cpsw_driver = {
2121         .driver = {
2122                 .name    = "cpsw-switch",
2123                 .pm      = &cpsw_pm_ops,
2124                 .of_match_table = cpsw_of_mtable,
2125         },
2126         .probe = cpsw_probe,
2127         .remove_new = cpsw_remove,
2128 };
2129
2130 module_platform_driver(cpsw_driver);
2131
2132 MODULE_LICENSE("GPL");
2133 MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");