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_bridge.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_device.h>
  28 #include <linux/if_vlan.h>
  29 #include <linux/kmemleak.h>
  30 #include <linux/sys_soc.h>
  31
  32 #include <net/page_pool.h>
  33 #include <net/pkt_cls.h>
  34 #include <net/devlink.h>
  35
  36 #include "cpsw.h"
  37 #include "cpsw_ale.h"
  38 #include "cpsw_priv.h"
  39 #include "cpsw_sl.h"
  40 #include "cpsw_switchdev.h"
  41 #include "cpts.h"
  42 #include "davinci_cpdma.h"
  43
  44 #include <net/pkt_sched.h>
  45
  46 static int debug_level;
  47 static int ale_ageout = CPSW_ALE_AGEOUT_DEFAULT;
  48 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
  49 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
  50
  51 struct cpsw_devlink {
  52         struct cpsw_common *cpsw;
  53 };
  54
  55 enum cpsw_devlink_param_id {
  56         CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
  57         CPSW_DL_PARAM_SWITCH_MODE,
  58         CPSW_DL_PARAM_ALE_BYPASS,
  59 };
  60
  61 /* struct cpsw_common is not needed, kept here for compatibility
  62  * reasons witrh the old driver
  63  */
  64 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
  65                                  struct cpsw_priv *priv)
  66 {
  67         if (priv->emac_port == HOST_PORT_NUM)
  68                 return -1;
  69
  70         return priv->emac_port - 1;
  71 }
  72
  73 static bool cpsw_is_switch_en(struct cpsw_common *cpsw)
  74 {
  75         return !cpsw->data.dual_emac;
  76 }
  77
  78 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
  79 {
  80         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
  81         bool enable_uni = false;
  82         int i;
  83
  84         if (cpsw_is_switch_en(cpsw))
  85                 return;
  86
  87         /* Enabling promiscuous mode for one interface will be
  88          * common for both the interface as the interface shares
  89          * the same hardware resource.
  90          */
  91         for (i = 0; i < cpsw->data.slaves; i++)
  92                 if (cpsw->slaves[i].ndev &&
  93                     (cpsw->slaves[i].ndev->flags & IFF_PROMISC))
  94                         enable_uni = true;
  95
  96         if (!enable && enable_uni) {
  97                 enable = enable_uni;
  98                 dev_dbg(cpsw->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
  99         }
 100
 101         if (enable) {
 102                 /* Enable unknown unicast, reg/unreg mcast */
 103                 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 104                                      ALE_P0_UNI_FLOOD, 1);
 105
 106                 dev_dbg(cpsw->dev, "promiscuity enabled\n");
 107         } else {
 108                 /* Disable unknown unicast */
 109                 cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 110                                      ALE_P0_UNI_FLOOD, 0);
 111                 dev_dbg(cpsw->dev, "promiscuity disabled\n");
 112         }
 113 }
 114
 115 /**
 116  * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
 117  * if it's not deleted
 118  * @ndev: device to sync
 119  * @addr: address to be added or deleted
 120  * @vid: vlan id, if vid < 0 set/unset address for real device
 121  * @add: add address if the flag is set or remove otherwise
 122  */
 123 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
 124                        int vid, int add)
 125 {
 126         struct cpsw_priv *priv = netdev_priv(ndev);
 127         struct cpsw_common *cpsw = priv->cpsw;
 128         int mask, flags, ret, slave_no;
 129
 130         slave_no = cpsw_slave_index(cpsw, priv);
 131         if (vid < 0)
 132                 vid = cpsw->slaves[slave_no].port_vlan;
 133
 134         mask =  ALE_PORT_HOST;
 135         flags = vid ? ALE_VLAN : 0;
 136
 137         if (add)
 138                 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
 139         else
 140                 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
 141
 142         return ret;
 143 }
 144
 145 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 146 {
 147         struct addr_sync_ctx *sync_ctx = ctx;
 148         struct netdev_hw_addr *ha;
 149         int found = 0, ret = 0;
 150
 151         if (!vdev || !(vdev->flags & IFF_UP))
 152                 return 0;
 153
 154         /* vlan address is relevant if its sync_cnt != 0 */
 155         netdev_for_each_mc_addr(ha, vdev) {
 156                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 157                         found = ha->sync_cnt;
 158                         break;
 159                 }
 160         }
 161
 162         if (found)
 163                 sync_ctx->consumed++;
 164
 165         if (sync_ctx->flush) {
 166                 if (!found)
 167                         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 168                 return 0;
 169         }
 170
 171         if (found)
 172                 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
 173
 174         return ret;
 175 }
 176
 177 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 178 {
 179         struct addr_sync_ctx sync_ctx;
 180         int ret;
 181
 182         sync_ctx.consumed = 0;
 183         sync_ctx.addr = addr;
 184         sync_ctx.ndev = ndev;
 185         sync_ctx.flush = 0;
 186
 187         ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 188         if (sync_ctx.consumed < num && !ret)
 189                 ret = cpsw_set_mc(ndev, addr, -1, 1);
 190
 191         return ret;
 192 }
 193
 194 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 195 {
 196         struct addr_sync_ctx sync_ctx;
 197
 198         sync_ctx.consumed = 0;
 199         sync_ctx.addr = addr;
 200         sync_ctx.ndev = ndev;
 201         sync_ctx.flush = 1;
 202
 203         vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 204         if (sync_ctx.consumed == num)
 205                 cpsw_set_mc(ndev, addr, -1, 0);
 206
 207         return 0;
 208 }
 209
 210 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 211 {
 212         struct addr_sync_ctx *sync_ctx = ctx;
 213         struct netdev_hw_addr *ha;
 214         int found = 0;
 215
 216         if (!vdev || !(vdev->flags & IFF_UP))
 217                 return 0;
 218
 219         /* vlan address is relevant if its sync_cnt != 0 */
 220         netdev_for_each_mc_addr(ha, vdev) {
 221                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 222                         found = ha->sync_cnt;
 223                         break;
 224                 }
 225         }
 226
 227         if (!found)
 228                 return 0;
 229
 230         sync_ctx->consumed++;
 231         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 232         return 0;
 233 }
 234
 235 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
 236 {
 237         struct addr_sync_ctx sync_ctx;
 238
 239         sync_ctx.addr = addr;
 240         sync_ctx.ndev = ndev;
 241         sync_ctx.consumed = 0;
 242
 243         vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
 244         if (sync_ctx.consumed < num)
 245                 cpsw_set_mc(ndev, addr, -1, 0);
 246
 247         return 0;
 248 }
 249
 250 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 251 {
 252         struct cpsw_priv *priv = netdev_priv(ndev);
 253         struct cpsw_common *cpsw = priv->cpsw;
 254
 255         if (ndev->flags & IFF_PROMISC) {
 256                 /* Enable promiscuous mode */
 257                 cpsw_set_promiscious(ndev, true);
 258                 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, priv->emac_port);
 259                 return;
 260         }
 261
 262         /* Disable promiscuous mode */
 263         cpsw_set_promiscious(ndev, false);
 264
 265         /* Restore allmulti on vlans if necessary */
 266         cpsw_ale_set_allmulti(cpsw->ale,
 267                               ndev->flags & IFF_ALLMULTI, priv->emac_port);
 268
 269         /* add/remove mcast address either for real netdev or for vlan */
 270         __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
 271                                cpsw_del_mc_addr);
 272 }
 273
 274 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
 275 {
 276         len += CPSW_HEADROOM;
 277         len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 278
 279         return SKB_DATA_ALIGN(len);
 280 }
 281
 282 static void cpsw_rx_handler(void *token, int len, int status)
 283 {
 284         struct page *new_page, *page = token;
 285         void *pa = page_address(page);
 286         int headroom = CPSW_HEADROOM;
 287         struct cpsw_meta_xdp *xmeta;
 288         struct cpsw_common *cpsw;
 289         struct net_device *ndev;
 290         int port, ch, pkt_size;
 291         struct cpsw_priv *priv;
 292         struct page_pool *pool;
 293         struct sk_buff *skb;
 294         struct xdp_buff xdp;
 295         int ret = 0;
 296         dma_addr_t dma;
 297
 298         xmeta = pa + CPSW_XMETA_OFFSET;
 299         cpsw = ndev_to_cpsw(xmeta->ndev);
 300         ndev = xmeta->ndev;
 301         pkt_size = cpsw->rx_packet_max;
 302         ch = xmeta->ch;
 303
 304         if (status >= 0) {
 305                 port = CPDMA_RX_SOURCE_PORT(status);
 306                 if (port)
 307                         ndev = cpsw->slaves[--port].ndev;
 308         }
 309
 310         priv = netdev_priv(ndev);
 311         pool = cpsw->page_pool[ch];
 312
 313         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
 314                 /* In dual emac mode check for all interfaces */
 315                 if (cpsw->usage_count && status >= 0) {
 316                         /* The packet received is for the interface which
 317                          * is already down and the other interface is up
 318                          * and running, instead of freeing which results
 319                          * in reducing of the number of rx descriptor in
 320                          * DMA engine, requeue page back to cpdma.
 321                          */
 322                         new_page = page;
 323                         goto requeue;
 324                 }
 325
 326                 /* the interface is going down, pages are purged */
 327                 page_pool_recycle_direct(pool, page);
 328                 return;
 329         }
 330
 331         new_page = page_pool_dev_alloc_pages(pool);
 332         if (unlikely(!new_page)) {
 333                 new_page = page;
 334                 ndev->stats.rx_dropped++;
 335                 goto requeue;
 336         }
 337
 338         if (priv->xdp_prog) {
 339                 int headroom = CPSW_HEADROOM, size = len;
 340
 341                 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
 342                 if (status & CPDMA_RX_VLAN_ENCAP) {
 343                         headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 344                         size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 345                 }
 346
 347                 xdp_prepare_buff(&xdp, pa, headroom, size, false);
 348
 349                 ret = cpsw_run_xdp(priv, ch, &xdp, page, priv->emac_port, &len);
 350                 if (ret != CPSW_XDP_PASS)
 351                         goto requeue;
 352
 353                 headroom = xdp.data - xdp.data_hard_start;
 354
 355                 /* XDP prog can modify vlan tag, so can't use encap header */
 356                 status &= ~CPDMA_RX_VLAN_ENCAP;
 357         }
 358
 359         /* pass skb to netstack if no XDP prog or returned XDP_PASS */
 360         skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 361         if (!skb) {
 362                 ndev->stats.rx_dropped++;
 363                 page_pool_recycle_direct(pool, page);
 364                 goto requeue;
 365         }
 366
 367         skb->offload_fwd_mark = priv->offload_fwd_mark;
 368         skb_reserve(skb, headroom);
 369         skb_put(skb, len);
 370         skb->dev = ndev;
 371         if (status & CPDMA_RX_VLAN_ENCAP)
 372                 cpsw_rx_vlan_encap(skb);
 373         if (priv->rx_ts_enabled)
 374                 cpts_rx_timestamp(cpsw->cpts, skb);
 375         skb->protocol = eth_type_trans(skb, ndev);
 376
 377         /* mark skb for recycling */
 378         skb_mark_for_recycle(skb, page, pool);
 379         netif_receive_skb(skb);
 380
 381         ndev->stats.rx_bytes += len;
 382         ndev->stats.rx_packets++;
 383
 384 requeue:
 385         xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 386         xmeta->ndev = ndev;
 387         xmeta->ch = ch;
 388
 389         dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
 390         ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 391                                        pkt_size, 0);
 392         if (ret < 0) {
 393                 WARN_ON(ret == -ENOMEM);
 394                 page_pool_recycle_direct(pool, new_page);
 395         }
 396 }
 397
 398 static int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 399                                    unsigned short vid)
 400 {
 401         struct cpsw_common *cpsw = priv->cpsw;
 402         int unreg_mcast_mask = 0;
 403         int mcast_mask;
 404         u32 port_mask;
 405         int ret;
 406
 407         port_mask = (1 << priv->emac_port) | ALE_PORT_HOST;
 408
 409         mcast_mask = ALE_PORT_HOST;
 410         if (priv->ndev->flags & IFF_ALLMULTI)
 411                 unreg_mcast_mask = mcast_mask;
 412
 413         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
 414                                 unreg_mcast_mask);
 415         if (ret != 0)
 416                 return ret;
 417
 418         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 419                                  HOST_PORT_NUM, ALE_VLAN, vid);
 420         if (ret != 0)
 421                 goto clean_vid;
 422
 423         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 424                                  mcast_mask, ALE_VLAN, vid, 0);
 425         if (ret != 0)
 426                 goto clean_vlan_ucast;
 427         return 0;
 428
 429 clean_vlan_ucast:
 430         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
 431                            HOST_PORT_NUM, ALE_VLAN, vid);
 432 clean_vid:
 433         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
 434         return ret;
 435 }
 436
 437 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
 438                                     __be16 proto, u16 vid)
 439 {
 440         struct cpsw_priv *priv = netdev_priv(ndev);
 441         struct cpsw_common *cpsw = priv->cpsw;
 442         int ret, i;
 443
 444         if (cpsw_is_switch_en(cpsw)) {
 445                 dev_dbg(cpsw->dev, ".ndo_vlan_rx_add_vid called in switch mode\n");
 446                 return 0;
 447         }
 448
 449         if (vid == cpsw->data.default_vlan)
 450                 return 0;
 451
 452         ret = pm_runtime_get_sync(cpsw->dev);
 453         if (ret < 0) {
 454                 pm_runtime_put_noidle(cpsw->dev);
 455                 return ret;
 456         }
 457
 458         /* In dual EMAC, reserved VLAN id should not be used for
 459          * creating VLAN interfaces as this can break the dual
 460          * EMAC port separation
 461          */
 462         for (i = 0; i < cpsw->data.slaves; i++) {
 463                 if (cpsw->slaves[i].ndev &&
 464                     vid == cpsw->slaves[i].port_vlan) {
 465                         ret = -EINVAL;
 466                         goto err;
 467                 }
 468         }
 469
 470         dev_dbg(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
 471         ret = cpsw_add_vlan_ale_entry(priv, vid);
 472 err:
 473         pm_runtime_put(cpsw->dev);
 474         return ret;
 475 }
 476
 477 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 478 {
 479         struct cpsw_priv *priv = arg;
 480
 481         if (!vdev || !vid)
 482                 return 0;
 483
 484         cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 485         return 0;
 486 }
 487
 488 /* restore resources after port reset */
 489 static void cpsw_restore(struct cpsw_priv *priv)
 490 {
 491         struct cpsw_common *cpsw = priv->cpsw;
 492
 493         /* restore vlan configurations */
 494         vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 495
 496         /* restore MQPRIO offload */
 497         cpsw_mqprio_resume(&cpsw->slaves[priv->emac_port - 1], priv);
 498
 499         /* restore CBS offload */
 500         cpsw_cbs_resume(&cpsw->slaves[priv->emac_port - 1], priv);
 501 }
 502
 503 static void cpsw_init_stp_ale_entry(struct cpsw_common *cpsw)
 504 {
 505         char stpa[] = {0x01, 0x80, 0xc2, 0x0, 0x0, 0x0};
 506
 507         cpsw_ale_add_mcast(cpsw->ale, stpa,
 508                            ALE_PORT_HOST, ALE_SUPER, 0,
 509                            ALE_MCAST_BLOCK_LEARN_FWD);
 510 }
 511
 512 static void cpsw_init_host_port_switch(struct cpsw_common *cpsw)
 513 {
 514         int vlan = cpsw->data.default_vlan;
 515
 516         writel(CPSW_FIFO_NORMAL_MODE, &cpsw->host_port_regs->tx_in_ctl);
 517
 518         writel(vlan, &cpsw->host_port_regs->port_vlan);
 519
 520         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 521                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 522                           ALE_PORT_1 | ALE_PORT_2);
 523
 524         cpsw_init_stp_ale_entry(cpsw);
 525
 526         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 1);
 527         dev_dbg(cpsw->dev, "Set P0_UNI_FLOOD\n");
 528         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 0);
 529 }
 530
 531 static void cpsw_init_host_port_dual_mac(struct cpsw_common *cpsw)
 532 {
 533         int vlan = cpsw->data.default_vlan;
 534
 535         writel(CPSW_FIFO_DUAL_MAC_MODE, &cpsw->host_port_regs->tx_in_ctl);
 536
 537         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_P0_UNI_FLOOD, 0);
 538         dev_dbg(cpsw->dev, "unset P0_UNI_FLOOD\n");
 539
 540         writel(vlan, &cpsw->host_port_regs->port_vlan);
 541
 542         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 543         /* learning make no sense in dual_mac mode */
 544         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_PORT_NOLEARN, 1);
 545 }
 546
 547 static void cpsw_init_host_port(struct cpsw_priv *priv)
 548 {
 549         struct cpsw_common *cpsw = priv->cpsw;
 550         u32 control_reg;
 551
 552         /* soft reset the controller and initialize ale */
 553         soft_reset("cpsw", &cpsw->regs->soft_reset);
 554         cpsw_ale_start(cpsw->ale);
 555
 556         /* switch to vlan unaware mode */
 557         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 558                              CPSW_ALE_VLAN_AWARE);
 559         control_reg = readl(&cpsw->regs->control);
 560         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 561         writel(control_reg, &cpsw->regs->control);
 562
 563         /* setup host port priority mapping */
 564         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 565                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 566         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 567
 568         /* disable priority elevation */
 569         writel_relaxed(0, &cpsw->regs->ptype);
 570
 571         /* enable statistics collection only on all ports */
 572         writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 573
 574         /* Enable internal fifo flow control */
 575         writel(0x7, &cpsw->regs->flow_control);
 576
 577         if (cpsw_is_switch_en(cpsw))
 578                 cpsw_init_host_port_switch(cpsw);
 579         else
 580                 cpsw_init_host_port_dual_mac(cpsw);
 581
 582         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 583                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 584 }
 585
 586 static void cpsw_port_add_dual_emac_def_ale_entries(struct cpsw_priv *priv,
 587                                                     struct cpsw_slave *slave)
 588 {
 589         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 590         struct cpsw_common *cpsw = priv->cpsw;
 591         u32 reg;
 592
 593         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 594                CPSW2_PORT_VLAN;
 595         slave_write(slave, slave->port_vlan, reg);
 596
 597         cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 598                           port_mask, port_mask, 0);
 599         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 600                            ALE_PORT_HOST, ALE_VLAN, slave->port_vlan,
 601                            ALE_MCAST_FWD);
 602         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 603                            HOST_PORT_NUM, ALE_VLAN |
 604                            ALE_SECURE, slave->port_vlan);
 605         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 606                              ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 607         /* learning make no sense in dual_mac mode */
 608         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 609                              ALE_PORT_NOLEARN, 1);
 610 }
 611
 612 static void cpsw_port_add_switch_def_ale_entries(struct cpsw_priv *priv,
 613                                                  struct cpsw_slave *slave)
 614 {
 615         u32 port_mask = 1 << priv->emac_port | ALE_PORT_HOST;
 616         struct cpsw_common *cpsw = priv->cpsw;
 617         u32 reg;
 618
 619         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 620                              ALE_PORT_DROP_UNKNOWN_VLAN, 0);
 621         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 622                              ALE_PORT_NOLEARN, 0);
 623         /* disabling SA_UPDATE required to make stp work, without this setting
 624          * Host MAC addresses will jump between ports.
 625          * As per TRM MAC address can be defined as unicast supervisory (super)
 626          * by setting both (ALE_BLOCKED | ALE_SECURE) which should prevent
 627          * SA_UPDATE, but HW seems works incorrectly and setting ALE_SECURE
 628          * causes STP packets to be dropped due to ingress filter
 629          *      if (source address found) and (secure) and
 630          *         (receive port number != port_number))
 631          *         then discard the packet
 632          */
 633         cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 634                              ALE_PORT_NO_SA_UPDATE, 1);
 635
 636         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 637                            port_mask, ALE_VLAN, slave->port_vlan,
 638                            ALE_MCAST_FWD_2);
 639         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 640                            HOST_PORT_NUM, ALE_VLAN, slave->port_vlan);
 641
 642         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 643                CPSW2_PORT_VLAN;
 644         slave_write(slave, slave->port_vlan, reg);
 645 }
 646
 647 static void cpsw_adjust_link(struct net_device *ndev)
 648 {
 649         struct cpsw_priv *priv = netdev_priv(ndev);
 650         struct cpsw_common *cpsw = priv->cpsw;
 651         struct cpsw_slave *slave;
 652         struct phy_device *phy;
 653         u32 mac_control = 0;
 654
 655         slave = &cpsw->slaves[priv->emac_port - 1];
 656         phy = slave->phy;
 657
 658         if (!phy)
 659                 return;
 660
 661         if (phy->link) {
 662                 mac_control = CPSW_SL_CTL_GMII_EN;
 663
 664                 if (phy->speed == 1000)
 665                         mac_control |= CPSW_SL_CTL_GIG;
 666                 if (phy->duplex)
 667                         mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 668
 669                 /* set speed_in input in case RMII mode is used in 100Mbps */
 670                 if (phy->speed == 100)
 671                         mac_control |= CPSW_SL_CTL_IFCTL_A;
 672                 /* in band mode only works in 10Mbps RGMII mode */
 673                 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 674                         mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 675
 676                 if (priv->rx_pause)
 677                         mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 678
 679                 if (priv->tx_pause)
 680                         mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 681
 682                 if (mac_control != slave->mac_control)
 683                         cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 684
 685                 /* enable forwarding */
 686                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 687                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 688
 689                 netif_tx_wake_all_queues(ndev);
 690
 691                 if (priv->shp_cfg_speed &&
 692                     priv->shp_cfg_speed != slave->phy->speed &&
 693                     !cpsw_shp_is_off(priv))
 694                         dev_warn(priv->dev, "Speed was changed, CBS shaper speeds are changed!");
 695         } else {
 696                 netif_tx_stop_all_queues(ndev);
 697
 698                 mac_control = 0;
 699                 /* disable forwarding */
 700                 cpsw_ale_control_set(cpsw->ale, priv->emac_port,
 701                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 702
 703                 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 704
 705                 cpsw_sl_ctl_reset(slave->mac_sl);
 706         }
 707
 708         if (mac_control != slave->mac_control)
 709                 phy_print_status(phy);
 710
 711         slave->mac_control = mac_control;
 712
 713         if (phy->link && cpsw_need_resplit(cpsw))
 714                 cpsw_split_res(cpsw);
 715 }
 716
 717 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 718 {
 719         struct cpsw_common *cpsw = priv->cpsw;
 720         struct phy_device *phy;
 721
 722         cpsw_sl_reset(slave->mac_sl, 100);
 723         cpsw_sl_ctl_reset(slave->mac_sl);
 724
 725         /* setup priority mapping */
 726         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 727                           RX_PRIORITY_MAPPING);
 728
 729         switch (cpsw->version) {
 730         case CPSW_VERSION_1:
 731                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 732                 /* Increase RX FIFO size to 5 for supporting fullduplex
 733                  * flow control mode
 734                  */
 735                 slave_write(slave,
 736                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 737                             CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 738                 break;
 739         case CPSW_VERSION_2:
 740         case CPSW_VERSION_3:
 741         case CPSW_VERSION_4:
 742                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 743                 /* Increase RX FIFO size to 5 for supporting fullduplex
 744                  * flow control mode
 745                  */
 746                 slave_write(slave,
 747                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 748                             CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 749                 break;
 750         }
 751
 752         /* setup max packet size, and mac address */
 753         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 754                           cpsw->rx_packet_max);
 755         cpsw_set_slave_mac(slave, priv);
 756
 757         slave->mac_control = 0; /* no link yet */
 758
 759         if (cpsw_is_switch_en(cpsw))
 760                 cpsw_port_add_switch_def_ale_entries(priv, slave);
 761         else
 762                 cpsw_port_add_dual_emac_def_ale_entries(priv, slave);
 763
 764         if (!slave->data->phy_node)
 765                 dev_err(priv->dev, "no phy found on slave %d\n",
 766                         slave->slave_num);
 767         phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 768                              &cpsw_adjust_link, 0, slave->data->phy_if);
 769         if (!phy) {
 770                 dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 771                         slave->data->phy_node,
 772                         slave->slave_num);
 773                 return;
 774         }
 775         slave->phy = phy;
 776
 777         phy_attached_info(slave->phy);
 778
 779         phy_start(slave->phy);
 780
 781         /* Configure GMII_SEL register */
 782         phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 783                          slave->data->phy_if);
 784 }
 785
 786 static int cpsw_ndo_stop(struct net_device *ndev)
 787 {
 788         struct cpsw_priv *priv = netdev_priv(ndev);
 789         struct cpsw_common *cpsw = priv->cpsw;
 790         struct cpsw_slave *slave;
 791
 792         cpsw_info(priv, ifdown, "shutting down ndev\n");
 793         slave = &cpsw->slaves[priv->emac_port - 1];
 794         if (slave->phy)
 795                 phy_stop(slave->phy);
 796
 797         netif_tx_stop_all_queues(priv->ndev);
 798
 799         if (slave->phy) {
 800                 phy_disconnect(slave->phy);
 801                 slave->phy = NULL;
 802         }
 803
 804         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 805
 806         if (cpsw->usage_count <= 1) {
 807                 napi_disable(&cpsw->napi_rx);
 808                 napi_disable(&cpsw->napi_tx);
 809                 cpts_unregister(cpsw->cpts);
 810                 cpsw_intr_disable(cpsw);
 811                 cpdma_ctlr_stop(cpsw->dma);
 812                 cpsw_ale_stop(cpsw->ale);
 813                 cpsw_destroy_xdp_rxqs(cpsw);
 814         }
 815
 816         if (cpsw_need_resplit(cpsw))
 817                 cpsw_split_res(cpsw);
 818
 819         cpsw->usage_count--;
 820         pm_runtime_put_sync(cpsw->dev);
 821         return 0;
 822 }
 823
 824 static int cpsw_ndo_open(struct net_device *ndev)
 825 {
 826         struct cpsw_priv *priv = netdev_priv(ndev);
 827         struct cpsw_common *cpsw = priv->cpsw;
 828         int ret;
 829
 830         dev_info(priv->dev, "starting ndev. mode: %s\n",
 831                  cpsw_is_switch_en(cpsw) ? "switch" : "dual_mac");
 832         ret = pm_runtime_get_sync(cpsw->dev);
 833         if (ret < 0) {
 834                 pm_runtime_put_noidle(cpsw->dev);
 835                 return ret;
 836         }
 837
 838         /* Notify the stack of the actual queue counts. */
 839         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 840         if (ret) {
 841                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 842                 goto pm_cleanup;
 843         }
 844
 845         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 846         if (ret) {
 847                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 848                 goto pm_cleanup;
 849         }
 850
 851         /* Initialize host and slave ports */
 852         if (!cpsw->usage_count)
 853                 cpsw_init_host_port(priv);
 854         cpsw_slave_open(&cpsw->slaves[priv->emac_port - 1], priv);
 855
 856         /* initialize shared resources for every ndev */
 857         if (!cpsw->usage_count) {
 858                 /* create rxqs for both infs in dual mac as they use same pool
 859                  * and must be destroyed together when no users.
 860                  */
 861                 ret = cpsw_create_xdp_rxqs(cpsw);
 862                 if (ret < 0)
 863                         goto err_cleanup;
 864
 865                 ret = cpsw_fill_rx_channels(priv);
 866                 if (ret < 0)
 867                         goto err_cleanup;
 868
 869                 if (cpsw->cpts) {
 870                         if (cpts_register(cpsw->cpts))
 871                                 dev_err(priv->dev, "error registering cpts device\n");
 872                         else
 873                                 writel(0x10, &cpsw->wr_regs->misc_en);
 874                 }
 875
 876                 napi_enable(&cpsw->napi_rx);
 877                 napi_enable(&cpsw->napi_tx);
 878
 879                 if (cpsw->tx_irq_disabled) {
 880                         cpsw->tx_irq_disabled = false;
 881                         enable_irq(cpsw->irqs_table[1]);
 882                 }
 883
 884                 if (cpsw->rx_irq_disabled) {
 885                         cpsw->rx_irq_disabled = false;
 886                         enable_irq(cpsw->irqs_table[0]);
 887                 }
 888         }
 889
 890         cpsw_restore(priv);
 891
 892         /* Enable Interrupt pacing if configured */
 893         if (cpsw->coal_intvl != 0) {
 894                 struct ethtool_coalesce coal;
 895
 896                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 897                 cpsw_set_coalesce(ndev, &coal);
 898         }
 899
 900         cpdma_ctlr_start(cpsw->dma);
 901         cpsw_intr_enable(cpsw);
 902         cpsw->usage_count++;
 903
 904         return 0;
 905
 906 err_cleanup:
 907         cpsw_ndo_stop(ndev);
 908
 909 pm_cleanup:
 910         pm_runtime_put_sync(cpsw->dev);
 911         return ret;
 912 }
 913
 914 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 915                                        struct net_device *ndev)
 916 {
 917         struct cpsw_priv *priv = netdev_priv(ndev);
 918         struct cpsw_common *cpsw = priv->cpsw;
 919         struct cpts *cpts = cpsw->cpts;
 920         struct netdev_queue *txq;
 921         struct cpdma_chan *txch;
 922         int ret, q_idx;
 923
 924         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 925                 cpsw_err(priv, tx_err, "packet pad failed\n");
 926                 ndev->stats.tx_dropped++;
 927                 return NET_XMIT_DROP;
 928         }
 929
 930         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 931             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 932                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 933
 934         q_idx = skb_get_queue_mapping(skb);
 935         if (q_idx >= cpsw->tx_ch_num)
 936                 q_idx = q_idx % cpsw->tx_ch_num;
 937
 938         txch = cpsw->txv[q_idx].ch;
 939         txq = netdev_get_tx_queue(ndev, q_idx);
 940         skb_tx_timestamp(skb);
 941         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 942                                 priv->emac_port);
 943         if (unlikely(ret != 0)) {
 944                 cpsw_err(priv, tx_err, "desc submit failed\n");
 945                 goto fail;
 946         }
 947
 948         /* If there is no more tx desc left free then we need to
 949          * tell the kernel to stop sending us tx frames.
 950          */
 951         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 952                 netif_tx_stop_queue(txq);
 953
 954                 /* Barrier, so that stop_queue visible to other cpus */
 955                 smp_mb__after_atomic();
 956
 957                 if (cpdma_check_free_tx_desc(txch))
 958                         netif_tx_wake_queue(txq);
 959         }
 960
 961         return NETDEV_TX_OK;
 962 fail:
 963         ndev->stats.tx_dropped++;
 964         netif_tx_stop_queue(txq);
 965
 966         /* Barrier, so that stop_queue visible to other cpus */
 967         smp_mb__after_atomic();
 968
 969         if (cpdma_check_free_tx_desc(txch))
 970                 netif_tx_wake_queue(txq);
 971
 972         return NETDEV_TX_BUSY;
 973 }
 974
 975 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 976 {
 977         struct sockaddr *addr = (struct sockaddr *)p;
 978         struct cpsw_priv *priv = netdev_priv(ndev);
 979         struct cpsw_common *cpsw = priv->cpsw;
 980         int ret, slave_no;
 981         int flags = 0;
 982         u16 vid = 0;
 983
 984         slave_no = cpsw_slave_index(cpsw, priv);
 985         if (!is_valid_ether_addr(addr->sa_data))
 986                 return -EADDRNOTAVAIL;
 987
 988         ret = pm_runtime_get_sync(cpsw->dev);
 989         if (ret < 0) {
 990                 pm_runtime_put_noidle(cpsw->dev);
 991                 return ret;
 992         }
 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         ether_addr_copy(ndev->dev_addr, 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_get_sync(cpsw->dev);
1028         if (ret < 0) {
1029                 pm_runtime_put_noidle(cpsw->dev);
1030                 return ret;
1031         }
1032
1033         /* reset the return code as pm_runtime_get_sync() can return
1034          * non zero values as well.
1035          */
1036         ret = 0;
1037         for (i = 0; i < cpsw->data.slaves; i++) {
1038                 if (cpsw->slaves[i].ndev &&
1039                     vid == cpsw->slaves[i].port_vlan) {
1040                         ret = -EINVAL;
1041                         goto err;
1042                 }
1043         }
1044
1045         dev_dbg(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1046         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1047         if (ret)
1048                 dev_err(priv->dev, "cpsw_ale_del_vlan() failed: ret %d\n", ret);
1049         ret = cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1050                                  HOST_PORT_NUM, ALE_VLAN, vid);
1051         if (ret)
1052                 dev_err(priv->dev, "cpsw_ale_del_ucast() failed: ret %d\n",
1053                         ret);
1054         ret = cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1055                                  0, ALE_VLAN, vid);
1056         if (ret)
1057                 dev_err(priv->dev, "cpsw_ale_del_mcast failed. ret %d\n",
1058                         ret);
1059         cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1060         ret = 0;
1061 err:
1062         pm_runtime_put(cpsw->dev);
1063         return ret;
1064 }
1065
1066 static int cpsw_ndo_get_phys_port_name(struct net_device *ndev, char *name,
1067                                        size_t len)
1068 {
1069         struct cpsw_priv *priv = netdev_priv(ndev);
1070         int err;
1071
1072         err = snprintf(name, len, "p%d", priv->emac_port);
1073
1074         if (err >= len)
1075                 return -EINVAL;
1076
1077         return 0;
1078 }
1079
1080 #ifdef CONFIG_NET_POLL_CONTROLLER
1081 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1082 {
1083         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1084
1085         cpsw_intr_disable(cpsw);
1086         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1087         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1088         cpsw_intr_enable(cpsw);
1089 }
1090 #endif
1091
1092 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1093                              struct xdp_frame **frames, u32 flags)
1094 {
1095         struct cpsw_priv *priv = netdev_priv(ndev);
1096         struct xdp_frame *xdpf;
1097         int i, nxmit = 0;
1098
1099         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1100                 return -EINVAL;
1101
1102         for (i = 0; i < n; i++) {
1103                 xdpf = frames[i];
1104                 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1105                         break;
1106
1107                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, priv->emac_port))
1108                         break;
1109                 nxmit++;
1110         }
1111
1112         return nxmit;
1113 }
1114
1115 static int cpsw_get_port_parent_id(struct net_device *ndev,
1116                                    struct netdev_phys_item_id *ppid)
1117 {
1118         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1119
1120         ppid->id_len = sizeof(cpsw->base_mac);
1121         memcpy(&ppid->id, &cpsw->base_mac, ppid->id_len);
1122
1123         return 0;
1124 }
1125
1126 static const struct net_device_ops cpsw_netdev_ops = {
1127         .ndo_open               = cpsw_ndo_open,
1128         .ndo_stop               = cpsw_ndo_stop,
1129         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1130         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1131         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1132         .ndo_validate_addr      = eth_validate_addr,
1133         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1134         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1135         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1136 #ifdef CONFIG_NET_POLL_CONTROLLER
1137         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1138 #endif
1139         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1140         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1141         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1142         .ndo_get_phys_port_name = cpsw_ndo_get_phys_port_name,
1143         .ndo_bpf                = cpsw_ndo_bpf,
1144         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1145         .ndo_get_port_parent_id = cpsw_get_port_parent_id,
1146 };
1147
1148 static void cpsw_get_drvinfo(struct net_device *ndev,
1149                              struct ethtool_drvinfo *info)
1150 {
1151         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1152         struct platform_device *pdev;
1153
1154         pdev = to_platform_device(cpsw->dev);
1155         strlcpy(info->driver, "cpsw-switch", sizeof(info->driver));
1156         strlcpy(info->version, "2.0", sizeof(info->version));
1157         strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1158 }
1159
1160 static int cpsw_set_pauseparam(struct net_device *ndev,
1161                                struct ethtool_pauseparam *pause)
1162 {
1163         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1164         struct cpsw_priv *priv = netdev_priv(ndev);
1165         int slave_no;
1166
1167         slave_no = cpsw_slave_index(cpsw, priv);
1168         if (!cpsw->slaves[slave_no].phy)
1169                 return -EINVAL;
1170
1171         if (!phy_validate_pause(cpsw->slaves[slave_no].phy, pause))
1172                 return -EINVAL;
1173
1174         priv->rx_pause = pause->rx_pause ? true : false;
1175         priv->tx_pause = pause->tx_pause ? true : false;
1176
1177         phy_set_asym_pause(cpsw->slaves[slave_no].phy,
1178                            priv->rx_pause, priv->tx_pause);
1179
1180         return 0;
1181 }
1182
1183 static int cpsw_set_channels(struct net_device *ndev,
1184                              struct ethtool_channels *chs)
1185 {
1186         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1187 }
1188
1189 static const struct ethtool_ops cpsw_ethtool_ops = {
1190         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1191         .get_drvinfo            = cpsw_get_drvinfo,
1192         .get_msglevel           = cpsw_get_msglevel,
1193         .set_msglevel           = cpsw_set_msglevel,
1194         .get_link               = ethtool_op_get_link,
1195         .get_ts_info            = cpsw_get_ts_info,
1196         .get_coalesce           = cpsw_get_coalesce,
1197         .set_coalesce           = cpsw_set_coalesce,
1198         .get_sset_count         = cpsw_get_sset_count,
1199         .get_strings            = cpsw_get_strings,
1200         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1201         .get_pauseparam         = cpsw_get_pauseparam,
1202         .set_pauseparam         = cpsw_set_pauseparam,
1203         .get_wol                = cpsw_get_wol,
1204         .set_wol                = cpsw_set_wol,
1205         .get_regs_len           = cpsw_get_regs_len,
1206         .get_regs               = cpsw_get_regs,
1207         .begin                  = cpsw_ethtool_op_begin,
1208         .complete               = cpsw_ethtool_op_complete,
1209         .get_channels           = cpsw_get_channels,
1210         .set_channels           = cpsw_set_channels,
1211         .get_link_ksettings     = cpsw_get_link_ksettings,
1212         .set_link_ksettings     = cpsw_set_link_ksettings,
1213         .get_eee                = cpsw_get_eee,
1214         .set_eee                = cpsw_set_eee,
1215         .nway_reset             = cpsw_nway_reset,
1216         .get_ringparam          = cpsw_get_ringparam,
1217         .set_ringparam          = cpsw_set_ringparam,
1218 };
1219
1220 static int cpsw_probe_dt(struct cpsw_common *cpsw)
1221 {
1222         struct device_node *node = cpsw->dev->of_node, *tmp_node, *port_np;
1223         struct cpsw_platform_data *data = &cpsw->data;
1224         struct device *dev = cpsw->dev;
1225         int ret;
1226         u32 prop;
1227
1228         if (!node)
1229                 return -EINVAL;
1230
1231         tmp_node = of_get_child_by_name(node, "ethernet-ports");
1232         if (!tmp_node)
1233                 return -ENOENT;
1234         data->slaves = of_get_child_count(tmp_node);
1235         if (data->slaves != CPSW_SLAVE_PORTS_NUM) {
1236                 of_node_put(tmp_node);
1237                 return -ENOENT;
1238         }
1239
1240         data->active_slave = 0;
1241         data->channels = CPSW_MAX_QUEUES;
1242         data->dual_emac = true;
1243         data->bd_ram_size = CPSW_BD_RAM_SIZE;
1244         data->mac_control = 0;
1245
1246         data->slave_data = devm_kcalloc(dev, CPSW_SLAVE_PORTS_NUM,
1247                                         sizeof(struct cpsw_slave_data),
1248                                         GFP_KERNEL);
1249         if (!data->slave_data)
1250                 return -ENOMEM;
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                                 if (ret != -EPROBE_DEFER)
1296                                         dev_err(dev, "%pOF failed to register fixed-link phy: %d\n",
1297                                                 port_np, ret);
1298                                 goto err_node_put;
1299                         }
1300                         slave_data->phy_node = of_node_get(port_np);
1301                 } else {
1302                         slave_data->phy_node =
1303                                 of_parse_phandle(port_np, "phy-handle", 0);
1304                 }
1305
1306                 if (!slave_data->phy_node) {
1307                         dev_err(dev, "%pOF no phy found\n", port_np);
1308                         ret = -ENODEV;
1309                         goto err_node_put;
1310                 }
1311
1312                 ret = of_get_phy_mode(port_np, &slave_data->phy_if);
1313                 if (ret) {
1314                         dev_err(dev, "%pOF read phy-mode err %d\n",
1315                                 port_np, ret);
1316                         goto err_node_put;
1317                 }
1318
1319                 ret = of_get_mac_address(port_np, slave_data->mac_addr);
1320                 if (ret) {
1321                         ret = ti_cm_get_macid(dev, port_id - 1,
1322                                               slave_data->mac_addr);
1323                         if (ret)
1324                                 goto err_node_put;
1325                 }
1326
1327                 if (of_property_read_u32(port_np, "ti,dual-emac-pvid",
1328                                          &prop)) {
1329                         dev_err(dev, "%pOF Missing dual_emac_res_vlan in DT.\n",
1330                                 port_np);
1331                         slave_data->dual_emac_res_vlan = port_id;
1332                         dev_err(dev, "%pOF Using %d as Reserved VLAN\n",
1333                                 port_np, slave_data->dual_emac_res_vlan);
1334                 } else {
1335                         slave_data->dual_emac_res_vlan = prop;
1336                 }
1337         }
1338
1339         of_node_put(tmp_node);
1340         return 0;
1341
1342 err_node_put:
1343         of_node_put(port_np);
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
1394                 if (is_valid_ether_addr(slave_data->mac_addr)) {
1395                         ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1396                         dev_info(cpsw->dev, "Detected MACID = %pM\n",
1397                                  priv->mac_addr);
1398                 } else {
1399                         eth_random_addr(slave_data->mac_addr);
1400                         dev_info(cpsw->dev, "Random MACID = %pM\n",
1401                                  priv->mac_addr);
1402                 }
1403                 ether_addr_copy(ndev->dev_addr, slave_data->mac_addr);
1404                 ether_addr_copy(priv->mac_addr, slave_data->mac_addr);
1405
1406                 cpsw->slaves[i].ndev = ndev;
1407
1408                 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
1409                                   NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_NETNS_LOCAL;
1410
1411                 ndev->netdev_ops = &cpsw_netdev_ops;
1412                 ndev->ethtool_ops = &cpsw_ethtool_ops;
1413                 SET_NETDEV_DEV(ndev, dev);
1414
1415                 if (!napi_ndev) {
1416                         /* CPSW Host port CPDMA interface is shared between
1417                          * ports and there is only one TX and one RX IRQs
1418                          * available for all possible TX and RX channels
1419                          * accordingly.
1420                          */
1421                         netif_napi_add(ndev, &cpsw->napi_rx,
1422                                        cpsw->quirk_irq ?
1423                                        cpsw_rx_poll : cpsw_rx_mq_poll,
1424                                        CPSW_POLL_WEIGHT);
1425                         netif_tx_napi_add(ndev, &cpsw->napi_tx,
1426                                           cpsw->quirk_irq ?
1427                                           cpsw_tx_poll : cpsw_tx_mq_poll,
1428                                           CPSW_POLL_WEIGHT);
1429                 }
1430
1431                 napi_ndev = ndev;
1432         }
1433
1434         return ret;
1435 }
1436
1437 static void cpsw_unregister_ports(struct cpsw_common *cpsw)
1438 {
1439         int i = 0;
1440
1441         for (i = 0; i < cpsw->data.slaves; i++) {
1442                 if (!cpsw->slaves[i].ndev)
1443                         continue;
1444
1445                 unregister_netdev(cpsw->slaves[i].ndev);
1446         }
1447 }
1448
1449 static int cpsw_register_ports(struct cpsw_common *cpsw)
1450 {
1451         int ret = 0, i = 0;
1452
1453         for (i = 0; i < cpsw->data.slaves; i++) {
1454                 if (!cpsw->slaves[i].ndev)
1455                         continue;
1456
1457                 /* register the network device */
1458                 ret = register_netdev(cpsw->slaves[i].ndev);
1459                 if (ret) {
1460                         dev_err(cpsw->dev,
1461                                 "cpsw: err registering net device%d\n", i);
1462                         cpsw->slaves[i].ndev = NULL;
1463                         break;
1464                 }
1465         }
1466
1467         if (ret)
1468                 cpsw_unregister_ports(cpsw);
1469         return ret;
1470 }
1471
1472 bool cpsw_port_dev_check(const struct net_device *ndev)
1473 {
1474         if (ndev->netdev_ops == &cpsw_netdev_ops) {
1475                 struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1476
1477                 return !cpsw->data.dual_emac;
1478         }
1479
1480         return false;
1481 }
1482
1483 static void cpsw_port_offload_fwd_mark_update(struct cpsw_common *cpsw)
1484 {
1485         int set_val = 0;
1486         int i;
1487
1488         if (!cpsw->ale_bypass &&
1489             (cpsw->br_members == (ALE_PORT_1 | ALE_PORT_2)))
1490                 set_val = 1;
1491
1492         dev_dbg(cpsw->dev, "set offload_fwd_mark %d\n", set_val);
1493
1494         for (i = 0; i < cpsw->data.slaves; i++) {
1495                 struct net_device *sl_ndev = cpsw->slaves[i].ndev;
1496                 struct cpsw_priv *priv = netdev_priv(sl_ndev);
1497
1498                 priv->offload_fwd_mark = set_val;
1499         }
1500 }
1501
1502 static int cpsw_netdevice_port_link(struct net_device *ndev,
1503                                     struct net_device *br_ndev,
1504                                     struct netlink_ext_ack *extack)
1505 {
1506         struct cpsw_priv *priv = netdev_priv(ndev);
1507         struct cpsw_common *cpsw = priv->cpsw;
1508         int err;
1509
1510         if (!cpsw->br_members) {
1511                 cpsw->hw_bridge_dev = br_ndev;
1512         } else {
1513                 /* This is adding the port to a second bridge, this is
1514                  * unsupported
1515                  */
1516                 if (cpsw->hw_bridge_dev != br_ndev)
1517                         return -EOPNOTSUPP;
1518         }
1519
1520         err = switchdev_bridge_port_offload(ndev, ndev, NULL, NULL, NULL,
1521                                             extack);
1522         if (err)
1523                 return err;
1524
1525         cpsw->br_members |= BIT(priv->emac_port);
1526
1527         cpsw_port_offload_fwd_mark_update(cpsw);
1528
1529         return NOTIFY_DONE;
1530 }
1531
1532 static void cpsw_netdevice_port_unlink(struct net_device *ndev)
1533 {
1534         struct cpsw_priv *priv = netdev_priv(ndev);
1535         struct cpsw_common *cpsw = priv->cpsw;
1536
1537         switchdev_bridge_port_unoffload(ndev, NULL, NULL, NULL);
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 netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);
1552         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
1553         struct netdev_notifier_changeupper_info *info;
1554         int ret = NOTIFY_DONE;
1555
1556         if (!cpsw_port_dev_check(ndev))
1557                 return NOTIFY_DONE;
1558
1559         switch (event) {
1560         case NETDEV_CHANGEUPPER:
1561                 info = ptr;
1562
1563                 if (netif_is_bridge_master(info->upper_dev)) {
1564                         if (info->linking)
1565                                 ret = cpsw_netdevice_port_link(ndev,
1566                                                                info->upper_dev,
1567                                                                extack);
1568                         else
1569                                 cpsw_netdevice_port_unlink(ndev);
1570                 }
1571                 break;
1572         default:
1573                 return NOTIFY_DONE;
1574         }
1575
1576         return notifier_from_errno(ret);
1577 }
1578
1579 static struct notifier_block cpsw_netdevice_nb __read_mostly = {
1580         .notifier_call = cpsw_netdevice_event,
1581 };
1582
1583 static int cpsw_register_notifiers(struct cpsw_common *cpsw)
1584 {
1585         int ret = 0;
1586
1587         ret = register_netdevice_notifier(&cpsw_netdevice_nb);
1588         if (ret) {
1589                 dev_err(cpsw->dev, "can't register netdevice notifier\n");
1590                 return ret;
1591         }
1592
1593         ret = cpsw_switchdev_register_notifiers(cpsw);
1594         if (ret)
1595                 unregister_netdevice_notifier(&cpsw_netdevice_nb);
1596
1597         return ret;
1598 }
1599
1600 static void cpsw_unregister_notifiers(struct cpsw_common *cpsw)
1601 {
1602         cpsw_switchdev_unregister_notifiers(cpsw);
1603         unregister_netdevice_notifier(&cpsw_netdevice_nb);
1604 }
1605
1606 static const struct devlink_ops cpsw_devlink_ops = {
1607 };
1608
1609 static int cpsw_dl_switch_mode_get(struct devlink *dl, u32 id,
1610                                    struct devlink_param_gset_ctx *ctx)
1611 {
1612         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1613         struct cpsw_common *cpsw = dl_priv->cpsw;
1614
1615         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1616
1617         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1618                 return  -EOPNOTSUPP;
1619
1620         ctx->val.vbool = !cpsw->data.dual_emac;
1621
1622         return 0;
1623 }
1624
1625 static int cpsw_dl_switch_mode_set(struct devlink *dl, u32 id,
1626                                    struct devlink_param_gset_ctx *ctx)
1627 {
1628         struct cpsw_devlink *dl_priv = devlink_priv(dl);
1629         struct cpsw_common *cpsw = dl_priv->cpsw;
1630         int vlan = cpsw->data.default_vlan;
1631         bool switch_en = ctx->val.vbool;
1632         bool if_running = false;
1633         int i;
1634
1635         dev_dbg(cpsw->dev, "%s id:%u\n", __func__, id);
1636
1637         if (id != CPSW_DL_PARAM_SWITCH_MODE)
1638                 return  -EOPNOTSUPP;
1639
1640         if (switch_en == !cpsw->data.dual_emac)
1641                 return 0;
1642
1643         if (!switch_en && cpsw->br_members) {
1644                 dev_err(cpsw->dev, "Remove ports from BR before disabling switch mode\n");
1645                 return -EINVAL;
1646         }
1647
1648         rtnl_lock();
1649
1650         for (i = 0; i < cpsw->data.slaves; i++) {
1651                 struct cpsw_slave *slave = &cpsw->slaves[i];
1652                 struct net_device *sl_ndev = slave->ndev;
1653
1654                 if (!sl_ndev || !netif_running(sl_ndev))
1655                         continue;
1656
1657                 if_running = true;
1658         }
1659
1660         if (!if_running) {
1661                 /* all ndevs are down */
1662                 cpsw->data.dual_emac = !switch_en;
1663                 for (i = 0; i < cpsw->data.slaves; i++) {
1664                         struct cpsw_slave *slave = &cpsw->slaves[i];
1665                         struct net_device *sl_ndev = slave->ndev;
1666
1667                         if (!sl_ndev)
1668                                 continue;
1669
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_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1899         if (IS_ERR(ss_regs)) {
1900                 ret = PTR_ERR(ss_regs);
1901                 return ret;
1902         }
1903         cpsw->regs = ss_regs;
1904
1905         irq = platform_get_irq_byname(pdev, "rx");
1906         if (irq < 0)
1907                 return irq;
1908         cpsw->irqs_table[0] = irq;
1909
1910         irq = platform_get_irq_byname(pdev, "tx");
1911         if (irq < 0)
1912                 return irq;
1913         cpsw->irqs_table[1] = irq;
1914
1915         irq = platform_get_irq_byname(pdev, "misc");
1916         if (irq <= 0)
1917                 return irq;
1918         cpsw->misc_irq = irq;
1919
1920         platform_set_drvdata(pdev, cpsw);
1921         /* This may be required here for child devices. */
1922         pm_runtime_enable(dev);
1923
1924         /* Need to enable clocks with runtime PM api to access module
1925          * registers
1926          */
1927         ret = pm_runtime_get_sync(dev);
1928         if (ret < 0) {
1929                 pm_runtime_put_noidle(dev);
1930                 pm_runtime_disable(dev);
1931                 return ret;
1932         }
1933
1934         ret = cpsw_probe_dt(cpsw);
1935         if (ret)
1936                 goto clean_dt_ret;
1937
1938         soc = soc_device_match(cpsw_soc_devices);
1939         if (soc)
1940                 cpsw->quirk_irq = true;
1941
1942         cpsw->rx_packet_max = rx_packet_max;
1943         cpsw->descs_pool_size = descs_pool_size;
1944         eth_random_addr(cpsw->base_mac);
1945
1946         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1947                                (u32 __force)ss_res->start + CPSW2_BD_OFFSET,
1948                                descs_pool_size);
1949         if (ret)
1950                 goto clean_dt_ret;
1951
1952         cpsw->wr_regs = cpsw->version == CPSW_VERSION_1 ?
1953                         ss_regs + CPSW1_WR_OFFSET :
1954                         ss_regs + CPSW2_WR_OFFSET;
1955
1956         ch = cpsw->quirk_irq ? 0 : 7;
1957         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1958         if (IS_ERR(cpsw->txv[0].ch)) {
1959                 dev_err(dev, "error initializing tx dma channel\n");
1960                 ret = PTR_ERR(cpsw->txv[0].ch);
1961                 goto clean_cpts;
1962         }
1963
1964         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1965         if (IS_ERR(cpsw->rxv[0].ch)) {
1966                 dev_err(dev, "error initializing rx dma channel\n");
1967                 ret = PTR_ERR(cpsw->rxv[0].ch);
1968                 goto clean_cpts;
1969         }
1970         cpsw_split_res(cpsw);
1971
1972         /* setup netdevs */
1973         ret = cpsw_create_ports(cpsw);
1974         if (ret)
1975                 goto clean_unregister_netdev;
1976
1977         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1978          * MISC IRQs which are always kept disabled with this driver so
1979          * we will not request them.
1980          *
1981          * If anyone wants to implement support for those, make sure to
1982          * first request and append them to irqs_table array.
1983          */
1984
1985         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1986                                0, dev_name(dev), cpsw);
1987         if (ret < 0) {
1988                 dev_err(dev, "error attaching irq (%d)\n", ret);
1989                 goto clean_unregister_netdev;
1990         }
1991
1992         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1993                                0, dev_name(dev), cpsw);
1994         if (ret < 0) {
1995                 dev_err(dev, "error attaching irq (%d)\n", ret);
1996                 goto clean_unregister_netdev;
1997         }
1998
1999         if (!cpsw->cpts)
2000                 goto skip_cpts;
2001
2002         ret = devm_request_irq(dev, cpsw->misc_irq, cpsw_misc_interrupt,
2003                                0, dev_name(&pdev->dev), cpsw);
2004         if (ret < 0) {
2005                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
2006                 goto clean_unregister_netdev;
2007         }
2008
2009         /* Enable misc CPTS evnt_pend IRQ */
2010         cpts_set_irqpoll(cpsw->cpts, false);
2011
2012 skip_cpts:
2013         ret = cpsw_register_notifiers(cpsw);
2014         if (ret)
2015                 goto clean_unregister_netdev;
2016
2017         ret = cpsw_register_devlink(cpsw);
2018         if (ret)
2019                 goto clean_unregister_notifiers;
2020
2021         ret = cpsw_register_ports(cpsw);
2022         if (ret)
2023                 goto clean_unregister_notifiers;
2024
2025         dev_notice(dev, "initialized (regs %pa, pool size %d) hw_ver:%08X %d.%d (%d)\n",
2026                    &ss_res->start, descs_pool_size,
2027                    cpsw->version, CPSW_MAJOR_VERSION(cpsw->version),
2028                    CPSW_MINOR_VERSION(cpsw->version),
2029                    CPSW_RTL_VERSION(cpsw->version));
2030
2031         pm_runtime_put(dev);
2032
2033         return 0;
2034
2035 clean_unregister_notifiers:
2036         cpsw_unregister_notifiers(cpsw);
2037 clean_unregister_netdev:
2038         cpsw_unregister_ports(cpsw);
2039 clean_cpts:
2040         cpts_release(cpsw->cpts);
2041         cpdma_ctlr_destroy(cpsw->dma);
2042 clean_dt_ret:
2043         cpsw_remove_dt(cpsw);
2044         pm_runtime_put_sync(dev);
2045         pm_runtime_disable(dev);
2046         return ret;
2047 }
2048
2049 static int cpsw_remove(struct platform_device *pdev)
2050 {
2051         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
2052         int ret;
2053
2054         ret = pm_runtime_get_sync(&pdev->dev);
2055         if (ret < 0) {
2056                 pm_runtime_put_noidle(&pdev->dev);
2057                 return ret;
2058         }
2059
2060         cpsw_unregister_notifiers(cpsw);
2061         cpsw_unregister_devlink(cpsw);
2062         cpsw_unregister_ports(cpsw);
2063
2064         cpts_release(cpsw->cpts);
2065         cpdma_ctlr_destroy(cpsw->dma);
2066         cpsw_remove_dt(cpsw);
2067         pm_runtime_put_sync(&pdev->dev);
2068         pm_runtime_disable(&pdev->dev);
2069         return 0;
2070 }
2071
2072 static int __maybe_unused cpsw_suspend(struct device *dev)
2073 {
2074         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2075         int i;
2076
2077         rtnl_lock();
2078
2079         for (i = 0; i < cpsw->data.slaves; i++) {
2080                 struct net_device *ndev = cpsw->slaves[i].ndev;
2081
2082                 if (!(ndev && netif_running(ndev)))
2083                         continue;
2084
2085                 cpsw_ndo_stop(ndev);
2086         }
2087
2088         rtnl_unlock();
2089
2090         /* Select sleep pin state */
2091         pinctrl_pm_select_sleep_state(dev);
2092
2093         return 0;
2094 }
2095
2096 static int __maybe_unused cpsw_resume(struct device *dev)
2097 {
2098         struct cpsw_common *cpsw = dev_get_drvdata(dev);
2099         int i;
2100
2101         /* Select default pin state */
2102         pinctrl_pm_select_default_state(dev);
2103
2104         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
2105         rtnl_lock();
2106
2107         for (i = 0; i < cpsw->data.slaves; i++) {
2108                 struct net_device *ndev = cpsw->slaves[i].ndev;
2109
2110                 if (!(ndev && netif_running(ndev)))
2111                         continue;
2112
2113                 cpsw_ndo_open(ndev);
2114         }
2115
2116         rtnl_unlock();
2117
2118         return 0;
2119 }
2120
2121 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
2122
2123 static struct platform_driver cpsw_driver = {
2124         .driver = {
2125                 .name    = "cpsw-switch",
2126                 .pm      = &cpsw_pm_ops,
2127                 .of_match_table = cpsw_of_mtable,
2128         },
2129         .probe = cpsw_probe,
2130         .remove = cpsw_remove,
2131 };
2132
2133 module_platform_driver(cpsw_driver);
2134
2135 MODULE_LICENSE("GPL");
2136 MODULE_DESCRIPTION("TI CPSW switchdev Ethernet driver");