drivers/net/ethernet/ti/cpsw.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Texas Instruments Ethernet Switch Driver
   4  *
   5  * Copyright (C) 2012 Texas Instruments
   6  *
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/io.h>
  11 #include <linux/clk.h>
  12 #include <linux/timer.h>
  13 #include <linux/module.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/irqreturn.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/net_tstamp.h>
  21 #include <linux/phy.h>
  22 #include <linux/phy/phy.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/delay.h>
  25 #include <linux/pm_runtime.h>
  26 #include <linux/gpio/consumer.h>
  27 #include <linux/of.h>
  28 #include <linux/of_mdio.h>
  29 #include <linux/of_net.h>
  30 #include <linux/of_device.h>
  31 #include <linux/if_vlan.h>
  32 #include <linux/kmemleak.h>
  33 #include <linux/sys_soc.h>
  34 #include <net/page_pool.h>
  35 #include <linux/bpf.h>
  36 #include <linux/bpf_trace.h>
  37
  38 #include <linux/pinctrl/consumer.h>
  39 #include <net/pkt_cls.h>
  40
  41 #include "cpsw.h"
  42 #include "cpsw_ale.h"
  43 #include "cpsw_priv.h"
  44 #include "cpsw_sl.h"
  45 #include "cpts.h"
  46 #include "davinci_cpdma.h"
  47
  48 #include <net/pkt_sched.h>
  49
  50 static int debug_level;
  51 module_param(debug_level, int, 0);
  52 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
  53
  54 static int ale_ageout = 10;
  55 module_param(ale_ageout, int, 0);
  56 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
  57
  58 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
  59 module_param(rx_packet_max, int, 0);
  60 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
  61
  62 static int descs_pool_size = CPSW_CPDMA_DESCS_POOL_SIZE_DEFAULT;
  63 module_param(descs_pool_size, int, 0444);
  64 MODULE_PARM_DESC(descs_pool_size, "Number of CPDMA CPPI descriptors in pool");
  65
  66 #define for_each_slave(priv, func, arg...)                              \
  67         do {                                                            \
  68                 struct cpsw_slave *slave;                               \
  69                 struct cpsw_common *cpsw = (priv)->cpsw;                \
  70                 int n;                                                  \
  71                 if (cpsw->data.dual_emac)                               \
  72                         (func)((cpsw)->slaves + priv->emac_port, ##arg);\
  73                 else                                                    \
  74                         for (n = cpsw->data.slaves,                     \
  75                                         slave = cpsw->slaves;           \
  76                                         n; n--)                         \
  77                                 (func)(slave++, ##arg);                 \
  78         } while (0)
  79
  80 static int cpsw_slave_index_priv(struct cpsw_common *cpsw,
  81                                  struct cpsw_priv *priv)
  82 {
  83         return cpsw->data.dual_emac ? priv->emac_port : cpsw->data.active_slave;
  84 }
  85
  86 static int cpsw_get_slave_port(u32 slave_num)
  87 {
  88         return slave_num + 1;
  89 }
  90
  91 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
  92                                     __be16 proto, u16 vid);
  93
  94 static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
  95 {
  96         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
  97         struct cpsw_ale *ale = cpsw->ale;
  98         int i;
  99
 100         if (cpsw->data.dual_emac) {
 101                 bool flag = false;
 102
 103                 /* Enabling promiscuous mode for one interface will be
 104                  * common for both the interface as the interface shares
 105                  * the same hardware resource.
 106                  */
 107                 for (i = 0; i < cpsw->data.slaves; i++)
 108                         if (cpsw->slaves[i].ndev->flags & IFF_PROMISC)
 109                                 flag = true;
 110
 111                 if (!enable && flag) {
 112                         enable = true;
 113                         dev_err(&ndev->dev, "promiscuity not disabled as the other interface is still in promiscuity mode\n");
 114                 }
 115
 116                 if (enable) {
 117                         /* Enable Bypass */
 118                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 1);
 119
 120                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 121                 } else {
 122                         /* Disable Bypass */
 123                         cpsw_ale_control_set(ale, 0, ALE_BYPASS, 0);
 124                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 125                 }
 126         } else {
 127                 if (enable) {
 128                         unsigned long timeout = jiffies + HZ;
 129
 130                         /* Disable Learn for all ports (host is port 0 and slaves are port 1 and up */
 131                         for (i = 0; i <= cpsw->data.slaves; i++) {
 132                                 cpsw_ale_control_set(ale, i,
 133                                                      ALE_PORT_NOLEARN, 1);
 134                                 cpsw_ale_control_set(ale, i,
 135                                                      ALE_PORT_NO_SA_UPDATE, 1);
 136                         }
 137
 138                         /* Clear All Untouched entries */
 139                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 140                         do {
 141                                 cpu_relax();
 142                                 if (cpsw_ale_control_get(ale, 0, ALE_AGEOUT))
 143                                         break;
 144                         } while (time_after(timeout, jiffies));
 145                         cpsw_ale_control_set(ale, 0, ALE_AGEOUT, 1);
 146
 147                         /* Clear all mcast from ALE */
 148                         cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
 149                         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, NULL);
 150
 151                         /* Flood All Unicast Packets to Host port */
 152                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
 153                         dev_dbg(&ndev->dev, "promiscuity enabled\n");
 154                 } else {
 155                         /* Don't Flood All Unicast Packets to Host port */
 156                         cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 0);
 157
 158                         /* Enable Learn for all ports (host is port 0 and slaves are port 1 and up */
 159                         for (i = 0; i <= cpsw->data.slaves; i++) {
 160                                 cpsw_ale_control_set(ale, i,
 161                                                      ALE_PORT_NOLEARN, 0);
 162                                 cpsw_ale_control_set(ale, i,
 163                                                      ALE_PORT_NO_SA_UPDATE, 0);
 164                         }
 165                         dev_dbg(&ndev->dev, "promiscuity disabled\n");
 166                 }
 167         }
 168 }
 169
 170 /**
 171  * cpsw_set_mc - adds multicast entry to the table if it's not added or deletes
 172  * if it's not deleted
 173  * @ndev: device to sync
 174  * @addr: address to be added or deleted
 175  * @vid: vlan id, if vid < 0 set/unset address for real device
 176  * @add: add address if the flag is set or remove otherwise
 177  */
 178 static int cpsw_set_mc(struct net_device *ndev, const u8 *addr,
 179                        int vid, int add)
 180 {
 181         struct cpsw_priv *priv = netdev_priv(ndev);
 182         struct cpsw_common *cpsw = priv->cpsw;
 183         int mask, flags, ret;
 184
 185         if (vid < 0) {
 186                 if (cpsw->data.dual_emac)
 187                         vid = cpsw->slaves[priv->emac_port].port_vlan;
 188                 else
 189                         vid = 0;
 190         }
 191
 192         mask = cpsw->data.dual_emac ? ALE_PORT_HOST : ALE_ALL_PORTS;
 193         flags = vid ? ALE_VLAN : 0;
 194
 195         if (add)
 196                 ret = cpsw_ale_add_mcast(cpsw->ale, addr, mask, flags, vid, 0);
 197         else
 198                 ret = cpsw_ale_del_mcast(cpsw->ale, addr, 0, flags, vid);
 199
 200         return ret;
 201 }
 202
 203 static int cpsw_update_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 204 {
 205         struct addr_sync_ctx *sync_ctx = ctx;
 206         struct netdev_hw_addr *ha;
 207         int found = 0, ret = 0;
 208
 209         if (!vdev || !(vdev->flags & IFF_UP))
 210                 return 0;
 211
 212         /* vlan address is relevant if its sync_cnt != 0 */
 213         netdev_for_each_mc_addr(ha, vdev) {
 214                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 215                         found = ha->sync_cnt;
 216                         break;
 217                 }
 218         }
 219
 220         if (found)
 221                 sync_ctx->consumed++;
 222
 223         if (sync_ctx->flush) {
 224                 if (!found)
 225                         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 226                 return 0;
 227         }
 228
 229         if (found)
 230                 ret = cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 1);
 231
 232         return ret;
 233 }
 234
 235 static int cpsw_add_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 236 {
 237         struct addr_sync_ctx sync_ctx;
 238         int ret;
 239
 240         sync_ctx.consumed = 0;
 241         sync_ctx.addr = addr;
 242         sync_ctx.ndev = ndev;
 243         sync_ctx.flush = 0;
 244
 245         ret = vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 246         if (sync_ctx.consumed < num && !ret)
 247                 ret = cpsw_set_mc(ndev, addr, -1, 1);
 248
 249         return ret;
 250 }
 251
 252 static int cpsw_del_mc_addr(struct net_device *ndev, const u8 *addr, int num)
 253 {
 254         struct addr_sync_ctx sync_ctx;
 255
 256         sync_ctx.consumed = 0;
 257         sync_ctx.addr = addr;
 258         sync_ctx.ndev = ndev;
 259         sync_ctx.flush = 1;
 260
 261         vlan_for_each(ndev, cpsw_update_vlan_mc, &sync_ctx);
 262         if (sync_ctx.consumed == num)
 263                 cpsw_set_mc(ndev, addr, -1, 0);
 264
 265         return 0;
 266 }
 267
 268 static int cpsw_purge_vlan_mc(struct net_device *vdev, int vid, void *ctx)
 269 {
 270         struct addr_sync_ctx *sync_ctx = ctx;
 271         struct netdev_hw_addr *ha;
 272         int found = 0;
 273
 274         if (!vdev || !(vdev->flags & IFF_UP))
 275                 return 0;
 276
 277         /* vlan address is relevant if its sync_cnt != 0 */
 278         netdev_for_each_mc_addr(ha, vdev) {
 279                 if (ether_addr_equal(ha->addr, sync_ctx->addr)) {
 280                         found = ha->sync_cnt;
 281                         break;
 282                 }
 283         }
 284
 285         if (!found)
 286                 return 0;
 287
 288         sync_ctx->consumed++;
 289         cpsw_set_mc(sync_ctx->ndev, sync_ctx->addr, vid, 0);
 290         return 0;
 291 }
 292
 293 static int cpsw_purge_all_mc(struct net_device *ndev, const u8 *addr, int num)
 294 {
 295         struct addr_sync_ctx sync_ctx;
 296
 297         sync_ctx.addr = addr;
 298         sync_ctx.ndev = ndev;
 299         sync_ctx.consumed = 0;
 300
 301         vlan_for_each(ndev, cpsw_purge_vlan_mc, &sync_ctx);
 302         if (sync_ctx.consumed < num)
 303                 cpsw_set_mc(ndev, addr, -1, 0);
 304
 305         return 0;
 306 }
 307
 308 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 309 {
 310         struct cpsw_priv *priv = netdev_priv(ndev);
 311         struct cpsw_common *cpsw = priv->cpsw;
 312         int slave_port = -1;
 313
 314         if (cpsw->data.dual_emac)
 315                 slave_port = priv->emac_port + 1;
 316
 317         if (ndev->flags & IFF_PROMISC) {
 318                 /* Enable promiscuous mode */
 319                 cpsw_set_promiscious(ndev, true);
 320                 cpsw_ale_set_allmulti(cpsw->ale, IFF_ALLMULTI, slave_port);
 321                 return;
 322         } else {
 323                 /* Disable promiscuous mode */
 324                 cpsw_set_promiscious(ndev, false);
 325         }
 326
 327         /* Restore allmulti on vlans if necessary */
 328         cpsw_ale_set_allmulti(cpsw->ale,
 329                               ndev->flags & IFF_ALLMULTI, slave_port);
 330
 331         /* add/remove mcast address either for real netdev or for vlan */
 332         __hw_addr_ref_sync_dev(&ndev->mc, ndev, cpsw_add_mc_addr,
 333                                cpsw_del_mc_addr);
 334 }
 335
 336 static unsigned int cpsw_rxbuf_total_len(unsigned int len)
 337 {
 338         len += CPSW_HEADROOM;
 339         len += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 340
 341         return SKB_DATA_ALIGN(len);
 342 }
 343
 344 static void cpsw_rx_handler(void *token, int len, int status)
 345 {
 346         struct page             *new_page, *page = token;
 347         void                    *pa = page_address(page);
 348         struct cpsw_meta_xdp    *xmeta = pa + CPSW_XMETA_OFFSET;
 349         struct cpsw_common      *cpsw = ndev_to_cpsw(xmeta->ndev);
 350         int                     pkt_size = cpsw->rx_packet_max;
 351         int                     ret = 0, port, ch = xmeta->ch;
 352         int                     headroom = CPSW_HEADROOM;
 353         struct net_device       *ndev = xmeta->ndev;
 354         struct cpsw_priv        *priv;
 355         struct page_pool        *pool;
 356         struct sk_buff          *skb;
 357         struct xdp_buff         xdp;
 358         dma_addr_t              dma;
 359
 360         if (cpsw->data.dual_emac && status >= 0) {
 361                 port = CPDMA_RX_SOURCE_PORT(status);
 362                 if (port)
 363                         ndev = cpsw->slaves[--port].ndev;
 364         }
 365
 366         priv = netdev_priv(ndev);
 367         pool = cpsw->page_pool[ch];
 368         if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
 369                 /* In dual emac mode check for all interfaces */
 370                 if (cpsw->data.dual_emac && cpsw->usage_count &&
 371                     (status >= 0)) {
 372                         /* The packet received is for the interface which
 373                          * is already down and the other interface is up
 374                          * and running, instead of freeing which results
 375                          * in reducing of the number of rx descriptor in
 376                          * DMA engine, requeue page back to cpdma.
 377                          */
 378                         new_page = page;
 379                         goto requeue;
 380                 }
 381
 382                 /* the interface is going down, pages are purged */
 383                 page_pool_recycle_direct(pool, page);
 384                 return;
 385         }
 386
 387         new_page = page_pool_dev_alloc_pages(pool);
 388         if (unlikely(!new_page)) {
 389                 new_page = page;
 390                 ndev->stats.rx_dropped++;
 391                 goto requeue;
 392         }
 393
 394         if (priv->xdp_prog) {
 395                 if (status & CPDMA_RX_VLAN_ENCAP) {
 396                         xdp.data = pa + CPSW_HEADROOM +
 397                                    CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 398                         xdp.data_end = xdp.data + len -
 399                                        CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 400                 } else {
 401                         xdp.data = pa + CPSW_HEADROOM;
 402                         xdp.data_end = xdp.data + len;
 403                 }
 404
 405                 xdp_set_data_meta_invalid(&xdp);
 406
 407                 xdp.data_hard_start = pa;
 408                 xdp.rxq = &priv->xdp_rxq[ch];
 409                 xdp.frame_sz = PAGE_SIZE;
 410
 411                 port = priv->emac_port + cpsw->data.dual_emac;
 412                 ret = cpsw_run_xdp(priv, ch, &xdp, page, port);
 413                 if (ret != CPSW_XDP_PASS)
 414                         goto requeue;
 415
 416                 /* XDP prog might have changed packet data and boundaries */
 417                 len = xdp.data_end - xdp.data;
 418                 headroom = xdp.data - xdp.data_hard_start;
 419
 420                 /* XDP prog can modify vlan tag, so can't use encap header */
 421                 status &= ~CPDMA_RX_VLAN_ENCAP;
 422         }
 423
 424         /* pass skb to netstack if no XDP prog or returned XDP_PASS */
 425         skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 426         if (!skb) {
 427                 ndev->stats.rx_dropped++;
 428                 page_pool_recycle_direct(pool, page);
 429                 goto requeue;
 430         }
 431
 432         skb_reserve(skb, headroom);
 433         skb_put(skb, len);
 434         skb->dev = ndev;
 435         if (status & CPDMA_RX_VLAN_ENCAP)
 436                 cpsw_rx_vlan_encap(skb);
 437         if (priv->rx_ts_enabled)
 438                 cpts_rx_timestamp(cpsw->cpts, skb);
 439         skb->protocol = eth_type_trans(skb, ndev);
 440
 441         /* unmap page as no netstack skb page recycling */
 442         page_pool_release_page(pool, page);
 443         netif_receive_skb(skb);
 444
 445         ndev->stats.rx_bytes += len;
 446         ndev->stats.rx_packets++;
 447
 448 requeue:
 449         xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 450         xmeta->ndev = ndev;
 451         xmeta->ch = ch;
 452
 453         dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
 454         ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 455                                        pkt_size, 0);
 456         if (ret < 0) {
 457                 WARN_ON(ret == -ENOMEM);
 458                 page_pool_recycle_direct(pool, new_page);
 459         }
 460 }
 461
 462 static void _cpsw_adjust_link(struct cpsw_slave *slave,
 463                               struct cpsw_priv *priv, bool *link)
 464 {
 465         struct phy_device       *phy = slave->phy;
 466         u32                     mac_control = 0;
 467         u32                     slave_port;
 468         struct cpsw_common *cpsw = priv->cpsw;
 469
 470         if (!phy)
 471                 return;
 472
 473         slave_port = cpsw_get_slave_port(slave->slave_num);
 474
 475         if (phy->link) {
 476                 mac_control = CPSW_SL_CTL_GMII_EN;
 477
 478                 if (phy->speed == 1000)
 479                         mac_control |= CPSW_SL_CTL_GIG;
 480                 if (phy->duplex)
 481                         mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 482
 483                 /* set speed_in input in case RMII mode is used in 100Mbps */
 484                 if (phy->speed == 100)
 485                         mac_control |= CPSW_SL_CTL_IFCTL_A;
 486                 /* in band mode only works in 10Mbps RGMII mode */
 487                 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 488                         mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 489
 490                 if (priv->rx_pause)
 491                         mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 492
 493                 if (priv->tx_pause)
 494                         mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 495
 496                 if (mac_control != slave->mac_control)
 497                         cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 498
 499                 /* enable forwarding */
 500                 cpsw_ale_control_set(cpsw->ale, slave_port,
 501                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 502
 503                 *link = true;
 504
 505                 if (priv->shp_cfg_speed &&
 506                     priv->shp_cfg_speed != slave->phy->speed &&
 507                     !cpsw_shp_is_off(priv))
 508                         dev_warn(priv->dev,
 509                                  "Speed was changed, CBS shaper speeds are changed!");
 510         } else {
 511                 mac_control = 0;
 512                 /* disable forwarding */
 513                 cpsw_ale_control_set(cpsw->ale, slave_port,
 514                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 515
 516                 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 517
 518                 cpsw_sl_ctl_reset(slave->mac_sl);
 519         }
 520
 521         if (mac_control != slave->mac_control)
 522                 phy_print_status(phy);
 523
 524         slave->mac_control = mac_control;
 525 }
 526
 527 static void cpsw_adjust_link(struct net_device *ndev)
 528 {
 529         struct cpsw_priv        *priv = netdev_priv(ndev);
 530         struct cpsw_common      *cpsw = priv->cpsw;
 531         bool                    link = false;
 532
 533         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 534
 535         if (link) {
 536                 if (cpsw_need_resplit(cpsw))
 537                         cpsw_split_res(cpsw);
 538
 539                 netif_carrier_on(ndev);
 540                 if (netif_running(ndev))
 541                         netif_tx_wake_all_queues(ndev);
 542         } else {
 543                 netif_carrier_off(ndev);
 544                 netif_tx_stop_all_queues(ndev);
 545         }
 546 }
 547
 548 static inline void cpsw_add_dual_emac_def_ale_entries(
 549                 struct cpsw_priv *priv, struct cpsw_slave *slave,
 550                 u32 slave_port)
 551 {
 552         struct cpsw_common *cpsw = priv->cpsw;
 553         u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
 554
 555         if (cpsw->version == CPSW_VERSION_1)
 556                 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
 557         else
 558                 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
 559         cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 560                           port_mask, port_mask, 0);
 561         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 562                            ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
 563         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 564                            HOST_PORT_NUM, ALE_VLAN |
 565                            ALE_SECURE, slave->port_vlan);
 566         cpsw_ale_control_set(cpsw->ale, slave_port,
 567                              ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 568 }
 569
 570 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 571 {
 572         u32 slave_port;
 573         struct phy_device *phy;
 574         struct cpsw_common *cpsw = priv->cpsw;
 575
 576         cpsw_sl_reset(slave->mac_sl, 100);
 577         cpsw_sl_ctl_reset(slave->mac_sl);
 578
 579         /* setup priority mapping */
 580         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 581                           RX_PRIORITY_MAPPING);
 582
 583         switch (cpsw->version) {
 584         case CPSW_VERSION_1:
 585                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 586                 /* Increase RX FIFO size to 5 for supporting fullduplex
 587                  * flow control mode
 588                  */
 589                 slave_write(slave,
 590                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 591                             CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 592                 break;
 593         case CPSW_VERSION_2:
 594         case CPSW_VERSION_3:
 595         case CPSW_VERSION_4:
 596                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 597                 /* Increase RX FIFO size to 5 for supporting fullduplex
 598                  * flow control mode
 599                  */
 600                 slave_write(slave,
 601                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 602                             CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 603                 break;
 604         }
 605
 606         /* setup max packet size, and mac address */
 607         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 608                           cpsw->rx_packet_max);
 609         cpsw_set_slave_mac(slave, priv);
 610
 611         slave->mac_control = 0; /* no link yet */
 612
 613         slave_port = cpsw_get_slave_port(slave->slave_num);
 614
 615         if (cpsw->data.dual_emac)
 616                 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
 617         else
 618                 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 619                                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
 620
 621         if (slave->data->phy_node) {
 622                 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 623                                  &cpsw_adjust_link, 0, slave->data->phy_if);
 624                 if (!phy) {
 625                         dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 626                                 slave->data->phy_node,
 627                                 slave->slave_num);
 628                         return;
 629                 }
 630         } else {
 631                 phy = phy_connect(priv->ndev, slave->data->phy_id,
 632                                  &cpsw_adjust_link, slave->data->phy_if);
 633                 if (IS_ERR(phy)) {
 634                         dev_err(priv->dev,
 635                                 "phy \"%s\" not found on slave %d, err %ld\n",
 636                                 slave->data->phy_id, slave->slave_num,
 637                                 PTR_ERR(phy));
 638                         return;
 639                 }
 640         }
 641
 642         slave->phy = phy;
 643
 644         phy_attached_info(slave->phy);
 645
 646         phy_start(slave->phy);
 647
 648         /* Configure GMII_SEL register */
 649         if (!IS_ERR(slave->data->ifphy))
 650                 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 651                                  slave->data->phy_if);
 652         else
 653                 cpsw_phy_sel(cpsw->dev, slave->phy->interface,
 654                              slave->slave_num);
 655 }
 656
 657 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
 658 {
 659         struct cpsw_common *cpsw = priv->cpsw;
 660         const int vlan = cpsw->data.default_vlan;
 661         u32 reg;
 662         int i;
 663         int unreg_mcast_mask;
 664
 665         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 666                CPSW2_PORT_VLAN;
 667
 668         writel(vlan, &cpsw->host_port_regs->port_vlan);
 669
 670         for (i = 0; i < cpsw->data.slaves; i++)
 671                 slave_write(cpsw->slaves + i, vlan, reg);
 672
 673         if (priv->ndev->flags & IFF_ALLMULTI)
 674                 unreg_mcast_mask = ALE_ALL_PORTS;
 675         else
 676                 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
 677
 678         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 679                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 680                           unreg_mcast_mask);
 681 }
 682
 683 static void cpsw_init_host_port(struct cpsw_priv *priv)
 684 {
 685         u32 fifo_mode;
 686         u32 control_reg;
 687         struct cpsw_common *cpsw = priv->cpsw;
 688
 689         /* soft reset the controller and initialize ale */
 690         soft_reset("cpsw", &cpsw->regs->soft_reset);
 691         cpsw_ale_start(cpsw->ale);
 692
 693         /* switch to vlan unaware mode */
 694         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 695                              CPSW_ALE_VLAN_AWARE);
 696         control_reg = readl(&cpsw->regs->control);
 697         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 698         writel(control_reg, &cpsw->regs->control);
 699         fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
 700                      CPSW_FIFO_NORMAL_MODE;
 701         writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
 702
 703         /* setup host port priority mapping */
 704         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 705                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 706         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 707
 708         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 709                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 710
 711         if (!cpsw->data.dual_emac) {
 712                 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 713                                    0, 0);
 714                 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 715                                    ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
 716         }
 717 }
 718
 719 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
 720 {
 721         u32 slave_port;
 722
 723         slave_port = cpsw_get_slave_port(slave->slave_num);
 724
 725         if (!slave->phy)
 726                 return;
 727         phy_stop(slave->phy);
 728         phy_disconnect(slave->phy);
 729         slave->phy = NULL;
 730         cpsw_ale_control_set(cpsw->ale, slave_port,
 731                              ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 732         cpsw_sl_reset(slave->mac_sl, 100);
 733         cpsw_sl_ctl_reset(slave->mac_sl);
 734 }
 735
 736 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 737 {
 738         struct cpsw_priv *priv = arg;
 739
 740         if (!vdev)
 741                 return 0;
 742
 743         cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 744         return 0;
 745 }
 746
 747 /* restore resources after port reset */
 748 static void cpsw_restore(struct cpsw_priv *priv)
 749 {
 750         /* restore vlan configurations */
 751         vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 752
 753         /* restore MQPRIO offload */
 754         for_each_slave(priv, cpsw_mqprio_resume, priv);
 755
 756         /* restore CBS offload */
 757         for_each_slave(priv, cpsw_cbs_resume, priv);
 758 }
 759
 760 static int cpsw_ndo_open(struct net_device *ndev)
 761 {
 762         struct cpsw_priv *priv = netdev_priv(ndev);
 763         struct cpsw_common *cpsw = priv->cpsw;
 764         int ret;
 765         u32 reg;
 766
 767         ret = pm_runtime_get_sync(cpsw->dev);
 768         if (ret < 0) {
 769                 pm_runtime_put_noidle(cpsw->dev);
 770                 return ret;
 771         }
 772
 773         netif_carrier_off(ndev);
 774
 775         /* Notify the stack of the actual queue counts. */
 776         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 777         if (ret) {
 778                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 779                 goto err_cleanup;
 780         }
 781
 782         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 783         if (ret) {
 784                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 785                 goto err_cleanup;
 786         }
 787
 788         reg = cpsw->version;
 789
 790         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
 791                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
 792                  CPSW_RTL_VERSION(reg));
 793
 794         /* Initialize host and slave ports */
 795         if (!cpsw->usage_count)
 796                 cpsw_init_host_port(priv);
 797         for_each_slave(priv, cpsw_slave_open, priv);
 798
 799         /* Add default VLAN */
 800         if (!cpsw->data.dual_emac)
 801                 cpsw_add_default_vlan(priv);
 802         else
 803                 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
 804                                   ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 805
 806         /* initialize shared resources for every ndev */
 807         if (!cpsw->usage_count) {
 808                 /* disable priority elevation */
 809                 writel_relaxed(0, &cpsw->regs->ptype);
 810
 811                 /* enable statistics collection only on all ports */
 812                 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 813
 814                 /* Enable internal fifo flow control */
 815                 writel(0x7, &cpsw->regs->flow_control);
 816
 817                 napi_enable(&cpsw->napi_rx);
 818                 napi_enable(&cpsw->napi_tx);
 819
 820                 if (cpsw->tx_irq_disabled) {
 821                         cpsw->tx_irq_disabled = false;
 822                         enable_irq(cpsw->irqs_table[1]);
 823                 }
 824
 825                 if (cpsw->rx_irq_disabled) {
 826                         cpsw->rx_irq_disabled = false;
 827                         enable_irq(cpsw->irqs_table[0]);
 828                 }
 829
 830                 /* create rxqs for both infs in dual mac as they use same pool
 831                  * and must be destroyed together when no users.
 832                  */
 833                 ret = cpsw_create_xdp_rxqs(cpsw);
 834                 if (ret < 0)
 835                         goto err_cleanup;
 836
 837                 ret = cpsw_fill_rx_channels(priv);
 838                 if (ret < 0)
 839                         goto err_cleanup;
 840
 841                 if (cpts_register(cpsw->cpts))
 842                         dev_err(priv->dev, "error registering cpts device\n");
 843
 844         }
 845
 846         cpsw_restore(priv);
 847
 848         /* Enable Interrupt pacing if configured */
 849         if (cpsw->coal_intvl != 0) {
 850                 struct ethtool_coalesce coal;
 851
 852                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 853                 cpsw_set_coalesce(ndev, &coal);
 854         }
 855
 856         cpdma_ctlr_start(cpsw->dma);
 857         cpsw_intr_enable(cpsw);
 858         cpsw->usage_count++;
 859
 860         return 0;
 861
 862 err_cleanup:
 863         if (!cpsw->usage_count) {
 864                 cpdma_ctlr_stop(cpsw->dma);
 865                 cpsw_destroy_xdp_rxqs(cpsw);
 866         }
 867
 868         for_each_slave(priv, cpsw_slave_stop, cpsw);
 869         pm_runtime_put_sync(cpsw->dev);
 870         netif_carrier_off(priv->ndev);
 871         return ret;
 872 }
 873
 874 static int cpsw_ndo_stop(struct net_device *ndev)
 875 {
 876         struct cpsw_priv *priv = netdev_priv(ndev);
 877         struct cpsw_common *cpsw = priv->cpsw;
 878
 879         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
 880         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 881         netif_tx_stop_all_queues(priv->ndev);
 882         netif_carrier_off(priv->ndev);
 883
 884         if (cpsw->usage_count <= 1) {
 885                 napi_disable(&cpsw->napi_rx);
 886                 napi_disable(&cpsw->napi_tx);
 887                 cpts_unregister(cpsw->cpts);
 888                 cpsw_intr_disable(cpsw);
 889                 cpdma_ctlr_stop(cpsw->dma);
 890                 cpsw_ale_stop(cpsw->ale);
 891                 cpsw_destroy_xdp_rxqs(cpsw);
 892         }
 893         for_each_slave(priv, cpsw_slave_stop, cpsw);
 894
 895         if (cpsw_need_resplit(cpsw))
 896                 cpsw_split_res(cpsw);
 897
 898         cpsw->usage_count--;
 899         pm_runtime_put_sync(cpsw->dev);
 900         return 0;
 901 }
 902
 903 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 904                                        struct net_device *ndev)
 905 {
 906         struct cpsw_priv *priv = netdev_priv(ndev);
 907         struct cpsw_common *cpsw = priv->cpsw;
 908         struct cpts *cpts = cpsw->cpts;
 909         struct netdev_queue *txq;
 910         struct cpdma_chan *txch;
 911         int ret, q_idx;
 912
 913         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 914                 cpsw_err(priv, tx_err, "packet pad failed\n");
 915                 ndev->stats.tx_dropped++;
 916                 return NET_XMIT_DROP;
 917         }
 918
 919         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 920             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 921                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 922
 923         q_idx = skb_get_queue_mapping(skb);
 924         if (q_idx >= cpsw->tx_ch_num)
 925                 q_idx = q_idx % cpsw->tx_ch_num;
 926
 927         txch = cpsw->txv[q_idx].ch;
 928         txq = netdev_get_tx_queue(ndev, q_idx);
 929         skb_tx_timestamp(skb);
 930         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 931                                 priv->emac_port + cpsw->data.dual_emac);
 932         if (unlikely(ret != 0)) {
 933                 cpsw_err(priv, tx_err, "desc submit failed\n");
 934                 goto fail;
 935         }
 936
 937         /* If there is no more tx desc left free then we need to
 938          * tell the kernel to stop sending us tx frames.
 939          */
 940         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 941                 netif_tx_stop_queue(txq);
 942
 943                 /* Barrier, so that stop_queue visible to other cpus */
 944                 smp_mb__after_atomic();
 945
 946                 if (cpdma_check_free_tx_desc(txch))
 947                         netif_tx_wake_queue(txq);
 948         }
 949
 950         return NETDEV_TX_OK;
 951 fail:
 952         ndev->stats.tx_dropped++;
 953         netif_tx_stop_queue(txq);
 954
 955         /* Barrier, so that stop_queue visible to other cpus */
 956         smp_mb__after_atomic();
 957
 958         if (cpdma_check_free_tx_desc(txch))
 959                 netif_tx_wake_queue(txq);
 960
 961         return NETDEV_TX_BUSY;
 962 }
 963
 964 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 965 {
 966         struct cpsw_priv *priv = netdev_priv(ndev);
 967         struct sockaddr *addr = (struct sockaddr *)p;
 968         struct cpsw_common *cpsw = priv->cpsw;
 969         int flags = 0;
 970         u16 vid = 0;
 971         int ret;
 972
 973         if (!is_valid_ether_addr(addr->sa_data))
 974                 return -EADDRNOTAVAIL;
 975
 976         ret = pm_runtime_get_sync(cpsw->dev);
 977         if (ret < 0) {
 978                 pm_runtime_put_noidle(cpsw->dev);
 979                 return ret;
 980         }
 981
 982         if (cpsw->data.dual_emac) {
 983                 vid = cpsw->slaves[priv->emac_port].port_vlan;
 984                 flags = ALE_VLAN;
 985         }
 986
 987         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 988                            flags, vid);
 989         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
 990                            flags, vid);
 991
 992         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
 993         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
 994         for_each_slave(priv, cpsw_set_slave_mac, priv);
 995
 996         pm_runtime_put(cpsw->dev);
 997
 998         return 0;
 999 }
1000
1001 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
1002                                 unsigned short vid)
1003 {
1004         int ret;
1005         int unreg_mcast_mask = 0;
1006         int mcast_mask;
1007         u32 port_mask;
1008         struct cpsw_common *cpsw = priv->cpsw;
1009
1010         if (cpsw->data.dual_emac) {
1011                 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1012
1013                 mcast_mask = ALE_PORT_HOST;
1014                 if (priv->ndev->flags & IFF_ALLMULTI)
1015                         unreg_mcast_mask = mcast_mask;
1016         } else {
1017                 port_mask = ALE_ALL_PORTS;
1018                 mcast_mask = port_mask;
1019
1020                 if (priv->ndev->flags & IFF_ALLMULTI)
1021                         unreg_mcast_mask = ALE_ALL_PORTS;
1022                 else
1023                         unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1024         }
1025
1026         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1027                                 unreg_mcast_mask);
1028         if (ret != 0)
1029                 return ret;
1030
1031         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1032                                  HOST_PORT_NUM, ALE_VLAN, vid);
1033         if (ret != 0)
1034                 goto clean_vid;
1035
1036         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1037                                  mcast_mask, ALE_VLAN, vid, 0);
1038         if (ret != 0)
1039                 goto clean_vlan_ucast;
1040         return 0;
1041
1042 clean_vlan_ucast:
1043         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1044                            HOST_PORT_NUM, ALE_VLAN, vid);
1045 clean_vid:
1046         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1047         return ret;
1048 }
1049
1050 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1051                                     __be16 proto, u16 vid)
1052 {
1053         struct cpsw_priv *priv = netdev_priv(ndev);
1054         struct cpsw_common *cpsw = priv->cpsw;
1055         int ret;
1056
1057         if (vid == cpsw->data.default_vlan)
1058                 return 0;
1059
1060         ret = pm_runtime_get_sync(cpsw->dev);
1061         if (ret < 0) {
1062                 pm_runtime_put_noidle(cpsw->dev);
1063                 return ret;
1064         }
1065
1066         if (cpsw->data.dual_emac) {
1067                 /* In dual EMAC, reserved VLAN id should not be used for
1068                  * creating VLAN interfaces as this can break the dual
1069                  * EMAC port separation
1070                  */
1071                 int i;
1072
1073                 for (i = 0; i < cpsw->data.slaves; i++) {
1074                         if (vid == cpsw->slaves[i].port_vlan) {
1075                                 ret = -EINVAL;
1076                                 goto err;
1077                         }
1078                 }
1079         }
1080
1081         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1082         ret = cpsw_add_vlan_ale_entry(priv, vid);
1083 err:
1084         pm_runtime_put(cpsw->dev);
1085         return ret;
1086 }
1087
1088 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1089                                      __be16 proto, u16 vid)
1090 {
1091         struct cpsw_priv *priv = netdev_priv(ndev);
1092         struct cpsw_common *cpsw = priv->cpsw;
1093         int ret;
1094
1095         if (vid == cpsw->data.default_vlan)
1096                 return 0;
1097
1098         ret = pm_runtime_get_sync(cpsw->dev);
1099         if (ret < 0) {
1100                 pm_runtime_put_noidle(cpsw->dev);
1101                 return ret;
1102         }
1103
1104         if (cpsw->data.dual_emac) {
1105                 int i;
1106
1107                 for (i = 0; i < cpsw->data.slaves; i++) {
1108                         if (vid == cpsw->slaves[i].port_vlan)
1109                                 goto err;
1110                 }
1111         }
1112
1113         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1114         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1115         ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1116                                   HOST_PORT_NUM, ALE_VLAN, vid);
1117         ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1118                                   0, ALE_VLAN, vid);
1119         ret |= cpsw_ale_flush_multicast(cpsw->ale, 0, vid);
1120 err:
1121         pm_runtime_put(cpsw->dev);
1122         return ret;
1123 }
1124
1125 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1126                              struct xdp_frame **frames, u32 flags)
1127 {
1128         struct cpsw_priv *priv = netdev_priv(ndev);
1129         struct cpsw_common *cpsw = priv->cpsw;
1130         struct xdp_frame *xdpf;
1131         int i, drops = 0, port;
1132
1133         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1134                 return -EINVAL;
1135
1136         for (i = 0; i < n; i++) {
1137                 xdpf = frames[i];
1138                 if (xdpf->len < CPSW_MIN_PACKET_SIZE) {
1139                         xdp_return_frame_rx_napi(xdpf);
1140                         drops++;
1141                         continue;
1142                 }
1143
1144                 port = priv->emac_port + cpsw->data.dual_emac;
1145                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1146                         drops++;
1147         }
1148
1149         return n - drops;
1150 }
1151
1152 #ifdef CONFIG_NET_POLL_CONTROLLER
1153 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1154 {
1155         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1156
1157         cpsw_intr_disable(cpsw);
1158         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1159         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1160         cpsw_intr_enable(cpsw);
1161 }
1162 #endif
1163
1164 static const struct net_device_ops cpsw_netdev_ops = {
1165         .ndo_open               = cpsw_ndo_open,
1166         .ndo_stop               = cpsw_ndo_stop,
1167         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1168         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1169         .ndo_do_ioctl           = cpsw_ndo_ioctl,
1170         .ndo_validate_addr      = eth_validate_addr,
1171         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1172         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1173         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1174 #ifdef CONFIG_NET_POLL_CONTROLLER
1175         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1176 #endif
1177         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1178         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1179         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1180         .ndo_bpf                = cpsw_ndo_bpf,
1181         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1182 };
1183
1184 static void cpsw_get_drvinfo(struct net_device *ndev,
1185                              struct ethtool_drvinfo *info)
1186 {
1187         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1188         struct platform_device  *pdev = to_platform_device(cpsw->dev);
1189
1190         strlcpy(info->driver, "cpsw", sizeof(info->driver));
1191         strlcpy(info->version, "1.0", sizeof(info->version));
1192         strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1193 }
1194
1195 static int cpsw_set_pauseparam(struct net_device *ndev,
1196                                struct ethtool_pauseparam *pause)
1197 {
1198         struct cpsw_priv *priv = netdev_priv(ndev);
1199         bool link;
1200
1201         priv->rx_pause = pause->rx_pause ? true : false;
1202         priv->tx_pause = pause->tx_pause ? true : false;
1203
1204         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1205         return 0;
1206 }
1207
1208 static int cpsw_set_channels(struct net_device *ndev,
1209                              struct ethtool_channels *chs)
1210 {
1211         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1212 }
1213
1214 static const struct ethtool_ops cpsw_ethtool_ops = {
1215         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1216         .get_drvinfo    = cpsw_get_drvinfo,
1217         .get_msglevel   = cpsw_get_msglevel,
1218         .set_msglevel   = cpsw_set_msglevel,
1219         .get_link       = ethtool_op_get_link,
1220         .get_ts_info    = cpsw_get_ts_info,
1221         .get_coalesce   = cpsw_get_coalesce,
1222         .set_coalesce   = cpsw_set_coalesce,
1223         .get_sset_count         = cpsw_get_sset_count,
1224         .get_strings            = cpsw_get_strings,
1225         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1226         .get_pauseparam         = cpsw_get_pauseparam,
1227         .set_pauseparam         = cpsw_set_pauseparam,
1228         .get_wol        = cpsw_get_wol,
1229         .set_wol        = cpsw_set_wol,
1230         .get_regs_len   = cpsw_get_regs_len,
1231         .get_regs       = cpsw_get_regs,
1232         .begin          = cpsw_ethtool_op_begin,
1233         .complete       = cpsw_ethtool_op_complete,
1234         .get_channels   = cpsw_get_channels,
1235         .set_channels   = cpsw_set_channels,
1236         .get_link_ksettings     = cpsw_get_link_ksettings,
1237         .set_link_ksettings     = cpsw_set_link_ksettings,
1238         .get_eee        = cpsw_get_eee,
1239         .set_eee        = cpsw_set_eee,
1240         .nway_reset     = cpsw_nway_reset,
1241         .get_ringparam = cpsw_get_ringparam,
1242         .set_ringparam = cpsw_set_ringparam,
1243 };
1244
1245 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1246                          struct platform_device *pdev)
1247 {
1248         struct device_node *node = pdev->dev.of_node;
1249         struct device_node *slave_node;
1250         int i = 0, ret;
1251         u32 prop;
1252
1253         if (!node)
1254                 return -EINVAL;
1255
1256         if (of_property_read_u32(node, "slaves", &prop)) {
1257                 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1258                 return -EINVAL;
1259         }
1260         data->slaves = prop;
1261
1262         if (of_property_read_u32(node, "active_slave", &prop)) {
1263                 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1264                 return -EINVAL;
1265         }
1266         data->active_slave = prop;
1267
1268         data->slave_data = devm_kcalloc(&pdev->dev,
1269                                         data->slaves,
1270                                         sizeof(struct cpsw_slave_data),
1271                                         GFP_KERNEL);
1272         if (!data->slave_data)
1273                 return -ENOMEM;
1274
1275         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1276                 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1277                 return -EINVAL;
1278         }
1279         data->channels = prop;
1280
1281         if (of_property_read_u32(node, "ale_entries", &prop)) {
1282                 dev_err(&pdev->dev, "Missing ale_entries property in the DT.\n");
1283                 return -EINVAL;
1284         }
1285         data->ale_entries = prop;
1286
1287         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1288                 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1289                 return -EINVAL;
1290         }
1291         data->bd_ram_size = prop;
1292
1293         if (of_property_read_u32(node, "mac_control", &prop)) {
1294                 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1295                 return -EINVAL;
1296         }
1297         data->mac_control = prop;
1298
1299         if (of_property_read_bool(node, "dual_emac"))
1300                 data->dual_emac = 1;
1301
1302         /*
1303          * Populate all the child nodes here...
1304          */
1305         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1306         /* We do not want to force this, as in some cases may not have child */
1307         if (ret)
1308                 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1309
1310         for_each_available_child_of_node(node, slave_node) {
1311                 struct cpsw_slave_data *slave_data = data->slave_data + i;
1312                 const void *mac_addr = NULL;
1313                 int lenp;
1314                 const __be32 *parp;
1315
1316                 /* This is no slave child node, continue */
1317                 if (!of_node_name_eq(slave_node, "slave"))
1318                         continue;
1319
1320                 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1321                                                     NULL);
1322                 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1323                     IS_ERR(slave_data->ifphy)) {
1324                         ret = PTR_ERR(slave_data->ifphy);
1325                         dev_err(&pdev->dev,
1326                                 "%d: Error retrieving port phy: %d\n", i, ret);
1327                         goto err_node_put;
1328                 }
1329
1330                 slave_data->slave_node = slave_node;
1331                 slave_data->phy_node = of_parse_phandle(slave_node,
1332                                                         "phy-handle", 0);
1333                 parp = of_get_property(slave_node, "phy_id", &lenp);
1334                 if (slave_data->phy_node) {
1335                         dev_dbg(&pdev->dev,
1336                                 "slave[%d] using phy-handle=\"%pOF\"\n",
1337                                 i, slave_data->phy_node);
1338                 } else if (of_phy_is_fixed_link(slave_node)) {
1339                         /* In the case of a fixed PHY, the DT node associated
1340                          * to the PHY is the Ethernet MAC DT node.
1341                          */
1342                         ret = of_phy_register_fixed_link(slave_node);
1343                         if (ret) {
1344                                 if (ret != -EPROBE_DEFER)
1345                                         dev_err(&pdev->dev, "failed to register fixed-link phy: %d\n", ret);
1346                                 goto err_node_put;
1347                         }
1348                         slave_data->phy_node = of_node_get(slave_node);
1349                 } else if (parp) {
1350                         u32 phyid;
1351                         struct device_node *mdio_node;
1352                         struct platform_device *mdio;
1353
1354                         if (lenp != (sizeof(__be32) * 2)) {
1355                                 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1356                                 goto no_phy_slave;
1357                         }
1358                         mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1359                         phyid = be32_to_cpup(parp+1);
1360                         mdio = of_find_device_by_node(mdio_node);
1361                         of_node_put(mdio_node);
1362                         if (!mdio) {
1363                                 dev_err(&pdev->dev, "Missing mdio platform device\n");
1364                                 ret = -EINVAL;
1365                                 goto err_node_put;
1366                         }
1367                         snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1368                                  PHY_ID_FMT, mdio->name, phyid);
1369                         put_device(&mdio->dev);
1370                 } else {
1371                         dev_err(&pdev->dev,
1372                                 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1373                                 i);
1374                         goto no_phy_slave;
1375                 }
1376                 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1377                 if (ret) {
1378                         dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1379                                 i);
1380                         goto err_node_put;
1381                 }
1382
1383 no_phy_slave:
1384                 mac_addr = of_get_mac_address(slave_node);
1385                 if (!IS_ERR(mac_addr)) {
1386                         ether_addr_copy(slave_data->mac_addr, mac_addr);
1387                 } else {
1388                         ret = ti_cm_get_macid(&pdev->dev, i,
1389                                               slave_data->mac_addr);
1390                         if (ret)
1391                                 goto err_node_put;
1392                 }
1393                 if (data->dual_emac) {
1394                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1395                                                  &prop)) {
1396                                 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1397                                 slave_data->dual_emac_res_vlan = i+1;
1398                                 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1399                                         slave_data->dual_emac_res_vlan, i);
1400                         } else {
1401                                 slave_data->dual_emac_res_vlan = prop;
1402                         }
1403                 }
1404
1405                 i++;
1406                 if (i == data->slaves) {
1407                         ret = 0;
1408                         goto err_node_put;
1409                 }
1410         }
1411
1412         return 0;
1413
1414 err_node_put:
1415         of_node_put(slave_node);
1416         return ret;
1417 }
1418
1419 static void cpsw_remove_dt(struct platform_device *pdev)
1420 {
1421         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1422         struct cpsw_platform_data *data = &cpsw->data;
1423         struct device_node *node = pdev->dev.of_node;
1424         struct device_node *slave_node;
1425         int i = 0;
1426
1427         for_each_available_child_of_node(node, slave_node) {
1428                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1429
1430                 if (!of_node_name_eq(slave_node, "slave"))
1431                         continue;
1432
1433                 if (of_phy_is_fixed_link(slave_node))
1434                         of_phy_deregister_fixed_link(slave_node);
1435
1436                 of_node_put(slave_data->phy_node);
1437
1438                 i++;
1439                 if (i == data->slaves) {
1440                         of_node_put(slave_node);
1441                         break;
1442                 }
1443         }
1444
1445         of_platform_depopulate(&pdev->dev);
1446 }
1447
1448 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1449 {
1450         struct cpsw_common              *cpsw = priv->cpsw;
1451         struct cpsw_platform_data       *data = &cpsw->data;
1452         struct net_device               *ndev;
1453         struct cpsw_priv                *priv_sl2;
1454         int ret = 0;
1455
1456         ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1457                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1458         if (!ndev) {
1459                 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1460                 return -ENOMEM;
1461         }
1462
1463         priv_sl2 = netdev_priv(ndev);
1464         priv_sl2->cpsw = cpsw;
1465         priv_sl2->ndev = ndev;
1466         priv_sl2->dev  = &ndev->dev;
1467         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1468
1469         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1470                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1471                         ETH_ALEN);
1472                 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1473                          priv_sl2->mac_addr);
1474         } else {
1475                 eth_random_addr(priv_sl2->mac_addr);
1476                 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1477                          priv_sl2->mac_addr);
1478         }
1479         memcpy(ndev->dev_addr, priv_sl2->mac_addr, ETH_ALEN);
1480
1481         priv_sl2->emac_port = 1;
1482         cpsw->slaves[1].ndev = ndev;
1483         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1484
1485         ndev->netdev_ops = &cpsw_netdev_ops;
1486         ndev->ethtool_ops = &cpsw_ethtool_ops;
1487
1488         /* register the network device */
1489         SET_NETDEV_DEV(ndev, cpsw->dev);
1490         ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1491         ret = register_netdev(ndev);
1492         if (ret)
1493                 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1494
1495         return ret;
1496 }
1497
1498 static const struct of_device_id cpsw_of_mtable[] = {
1499         { .compatible = "ti,cpsw"},
1500         { .compatible = "ti,am335x-cpsw"},
1501         { .compatible = "ti,am4372-cpsw"},
1502         { .compatible = "ti,dra7-cpsw"},
1503         { /* sentinel */ },
1504 };
1505 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1506
1507 static const struct soc_device_attribute cpsw_soc_devices[] = {
1508         { .family = "AM33xx", .revision = "ES1.0"},
1509         { /* sentinel */ }
1510 };
1511
1512 static int cpsw_probe(struct platform_device *pdev)
1513 {
1514         struct device                   *dev = &pdev->dev;
1515         struct clk                      *clk;
1516         struct cpsw_platform_data       *data;
1517         struct net_device               *ndev;
1518         struct cpsw_priv                *priv;
1519         void __iomem                    *ss_regs;
1520         struct resource                 *ss_res;
1521         struct gpio_descs               *mode;
1522         const struct soc_device_attribute *soc;
1523         struct cpsw_common              *cpsw;
1524         int ret = 0, ch;
1525         int irq;
1526
1527         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1528         if (!cpsw)
1529                 return -ENOMEM;
1530
1531         platform_set_drvdata(pdev, cpsw);
1532         cpsw_slave_index = cpsw_slave_index_priv;
1533
1534         cpsw->dev = dev;
1535
1536         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1537         if (IS_ERR(mode)) {
1538                 ret = PTR_ERR(mode);
1539                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1540                 return ret;
1541         }
1542
1543         clk = devm_clk_get(dev, "fck");
1544         if (IS_ERR(clk)) {
1545                 ret = PTR_ERR(clk);
1546                 dev_err(dev, "fck is not found %d\n", ret);
1547                 return ret;
1548         }
1549         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1550
1551         ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1552         ss_regs = devm_ioremap_resource(dev, ss_res);
1553         if (IS_ERR(ss_regs))
1554                 return PTR_ERR(ss_regs);
1555         cpsw->regs = ss_regs;
1556
1557         cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1558         if (IS_ERR(cpsw->wr_regs))
1559                 return PTR_ERR(cpsw->wr_regs);
1560
1561         /* RX IRQ */
1562         irq = platform_get_irq(pdev, 1);
1563         if (irq < 0)
1564                 return irq;
1565         cpsw->irqs_table[0] = irq;
1566
1567         /* TX IRQ */
1568         irq = platform_get_irq(pdev, 2);
1569         if (irq < 0)
1570                 return irq;
1571         cpsw->irqs_table[1] = irq;
1572
1573         /* get misc irq*/
1574         irq = platform_get_irq(pdev, 3);
1575         if (irq <= 0)
1576                 return irq;
1577         cpsw->misc_irq = irq;
1578
1579         /*
1580          * This may be required here for child devices.
1581          */
1582         pm_runtime_enable(dev);
1583
1584         /* Need to enable clocks with runtime PM api to access module
1585          * registers
1586          */
1587         ret = pm_runtime_get_sync(dev);
1588         if (ret < 0) {
1589                 pm_runtime_put_noidle(dev);
1590                 goto clean_runtime_disable_ret;
1591         }
1592
1593         ret = cpsw_probe_dt(&cpsw->data, pdev);
1594         if (ret)
1595                 goto clean_dt_ret;
1596
1597         soc = soc_device_match(cpsw_soc_devices);
1598         if (soc)
1599                 cpsw->quirk_irq = 1;
1600
1601         data = &cpsw->data;
1602         cpsw->slaves = devm_kcalloc(dev,
1603                                     data->slaves, sizeof(struct cpsw_slave),
1604                                     GFP_KERNEL);
1605         if (!cpsw->slaves) {
1606                 ret = -ENOMEM;
1607                 goto clean_dt_ret;
1608         }
1609
1610         cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1611         cpsw->descs_pool_size = descs_pool_size;
1612
1613         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1614                                ss_res->start + CPSW2_BD_OFFSET,
1615                                descs_pool_size);
1616         if (ret)
1617                 goto clean_dt_ret;
1618
1619         ch = cpsw->quirk_irq ? 0 : 7;
1620         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1621         if (IS_ERR(cpsw->txv[0].ch)) {
1622                 dev_err(dev, "error initializing tx dma channel\n");
1623                 ret = PTR_ERR(cpsw->txv[0].ch);
1624                 goto clean_cpts;
1625         }
1626
1627         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1628         if (IS_ERR(cpsw->rxv[0].ch)) {
1629                 dev_err(dev, "error initializing rx dma channel\n");
1630                 ret = PTR_ERR(cpsw->rxv[0].ch);
1631                 goto clean_cpts;
1632         }
1633         cpsw_split_res(cpsw);
1634
1635         /* setup netdev */
1636         ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1637                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1638         if (!ndev) {
1639                 dev_err(dev, "error allocating net_device\n");
1640                 goto clean_cpts;
1641         }
1642
1643         priv = netdev_priv(ndev);
1644         priv->cpsw = cpsw;
1645         priv->ndev = ndev;
1646         priv->dev  = dev;
1647         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1648         priv->emac_port = 0;
1649
1650         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1651                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1652                 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1653         } else {
1654                 eth_random_addr(priv->mac_addr);
1655                 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1656         }
1657
1658         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
1659
1660         cpsw->slaves[0].ndev = ndev;
1661
1662         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1663
1664         ndev->netdev_ops = &cpsw_netdev_ops;
1665         ndev->ethtool_ops = &cpsw_ethtool_ops;
1666         netif_napi_add(ndev, &cpsw->napi_rx,
1667                        cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll,
1668                        CPSW_POLL_WEIGHT);
1669         netif_tx_napi_add(ndev, &cpsw->napi_tx,
1670                           cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll,
1671                           CPSW_POLL_WEIGHT);
1672
1673         /* register the network device */
1674         SET_NETDEV_DEV(ndev, dev);
1675         ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1676         ret = register_netdev(ndev);
1677         if (ret) {
1678                 dev_err(dev, "error registering net device\n");
1679                 ret = -ENODEV;
1680                 goto clean_cpts;
1681         }
1682
1683         if (cpsw->data.dual_emac) {
1684                 ret = cpsw_probe_dual_emac(priv);
1685                 if (ret) {
1686                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1687                         goto clean_unregister_netdev_ret;
1688                 }
1689         }
1690
1691         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1692          * MISC IRQs which are always kept disabled with this driver so
1693          * we will not request them.
1694          *
1695          * If anyone wants to implement support for those, make sure to
1696          * first request and append them to irqs_table array.
1697          */
1698         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1699                                0, dev_name(dev), cpsw);
1700         if (ret < 0) {
1701                 dev_err(dev, "error attaching irq (%d)\n", ret);
1702                 goto clean_unregister_netdev_ret;
1703         }
1704
1705
1706         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1707                                0, dev_name(&pdev->dev), cpsw);
1708         if (ret < 0) {
1709                 dev_err(dev, "error attaching irq (%d)\n", ret);
1710                 goto clean_unregister_netdev_ret;
1711         }
1712
1713         if (!cpsw->cpts)
1714                 goto skip_cpts;
1715
1716         ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1717                                0, dev_name(&pdev->dev), cpsw);
1718         if (ret < 0) {
1719                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1720                 goto clean_unregister_netdev_ret;
1721         }
1722
1723         /* Enable misc CPTS evnt_pend IRQ */
1724         cpts_set_irqpoll(cpsw->cpts, false);
1725         writel(0x10, &cpsw->wr_regs->misc_en);
1726
1727 skip_cpts:
1728         cpsw_notice(priv, probe,
1729                     "initialized device (regs %pa, irq %d, pool size %d)\n",
1730                     &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1731
1732         pm_runtime_put(&pdev->dev);
1733
1734         return 0;
1735
1736 clean_unregister_netdev_ret:
1737         unregister_netdev(ndev);
1738 clean_cpts:
1739         cpts_release(cpsw->cpts);
1740         cpdma_ctlr_destroy(cpsw->dma);
1741 clean_dt_ret:
1742         cpsw_remove_dt(pdev);
1743         pm_runtime_put_sync(&pdev->dev);
1744 clean_runtime_disable_ret:
1745         pm_runtime_disable(&pdev->dev);
1746         return ret;
1747 }
1748
1749 static int cpsw_remove(struct platform_device *pdev)
1750 {
1751         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1752         int i, ret;
1753
1754         ret = pm_runtime_get_sync(&pdev->dev);
1755         if (ret < 0) {
1756                 pm_runtime_put_noidle(&pdev->dev);
1757                 return ret;
1758         }
1759
1760         for (i = 0; i < cpsw->data.slaves; i++)
1761                 if (cpsw->slaves[i].ndev)
1762                         unregister_netdev(cpsw->slaves[i].ndev);
1763
1764         cpts_release(cpsw->cpts);
1765         cpdma_ctlr_destroy(cpsw->dma);
1766         cpsw_remove_dt(pdev);
1767         pm_runtime_put_sync(&pdev->dev);
1768         pm_runtime_disable(&pdev->dev);
1769         return 0;
1770 }
1771
1772 #ifdef CONFIG_PM_SLEEP
1773 static int cpsw_suspend(struct device *dev)
1774 {
1775         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1776         int i;
1777
1778         rtnl_lock();
1779
1780         for (i = 0; i < cpsw->data.slaves; i++)
1781                 if (cpsw->slaves[i].ndev)
1782                         if (netif_running(cpsw->slaves[i].ndev))
1783                                 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1784
1785         rtnl_unlock();
1786
1787         /* Select sleep pin state */
1788         pinctrl_pm_select_sleep_state(dev);
1789
1790         return 0;
1791 }
1792
1793 static int cpsw_resume(struct device *dev)
1794 {
1795         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1796         int i;
1797
1798         /* Select default pin state */
1799         pinctrl_pm_select_default_state(dev);
1800
1801         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1802         rtnl_lock();
1803
1804         for (i = 0; i < cpsw->data.slaves; i++)
1805                 if (cpsw->slaves[i].ndev)
1806                         if (netif_running(cpsw->slaves[i].ndev))
1807                                 cpsw_ndo_open(cpsw->slaves[i].ndev);
1808
1809         rtnl_unlock();
1810
1811         return 0;
1812 }
1813 #endif
1814
1815 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1816
1817 static struct platform_driver cpsw_driver = {
1818         .driver = {
1819                 .name    = "cpsw",
1820                 .pm      = &cpsw_pm_ops,
1821                 .of_match_table = cpsw_of_mtable,
1822         },
1823         .probe = cpsw_probe,
1824         .remove = cpsw_remove,
1825 };
1826
1827 module_platform_driver(cpsw_driver);
1828
1829 MODULE_LICENSE("GPL");
1830 MODULE_AUTHOR("Cyril Chemparathy <[email protected]>");
1831 MODULE_AUTHOR("Mugunthan V N <[email protected]>");
1832 MODULE_DESCRIPTION("TI CPSW Ethernet driver");