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_platform.h>
  31 #include <linux/if_vlan.h>
  32 #include <linux/kmemleak.h>
  33 #include <linux/sys_soc.h>
  34 #include <net/page_pool/helpers.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_NA;
 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_NA;
 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                 int size = len;
 396
 397                 xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
 398                 if (status & CPDMA_RX_VLAN_ENCAP) {
 399                         headroom += CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 400                         size -= CPSW_RX_VLAN_ENCAP_HDR_SIZE;
 401                 }
 402
 403                 xdp_prepare_buff(&xdp, pa, headroom, size, false);
 404
 405                 port = priv->emac_port + cpsw->data.dual_emac;
 406                 ret = cpsw_run_xdp(priv, ch, &xdp, page, port, &len);
 407                 if (ret != CPSW_XDP_PASS)
 408                         goto requeue;
 409
 410                 headroom = xdp.data - xdp.data_hard_start;
 411
 412                 /* XDP prog can modify vlan tag, so can't use encap header */
 413                 status &= ~CPDMA_RX_VLAN_ENCAP;
 414         }
 415
 416         /* pass skb to netstack if no XDP prog or returned XDP_PASS */
 417         skb = build_skb(pa, cpsw_rxbuf_total_len(pkt_size));
 418         if (!skb) {
 419                 ndev->stats.rx_dropped++;
 420                 page_pool_recycle_direct(pool, page);
 421                 goto requeue;
 422         }
 423
 424         skb_reserve(skb, headroom);
 425         skb_put(skb, len);
 426         skb->dev = ndev;
 427         if (status & CPDMA_RX_VLAN_ENCAP)
 428                 cpsw_rx_vlan_encap(skb);
 429         if (priv->rx_ts_enabled)
 430                 cpts_rx_timestamp(cpsw->cpts, skb);
 431         skb->protocol = eth_type_trans(skb, ndev);
 432
 433         /* mark skb for recycling */
 434         skb_mark_for_recycle(skb);
 435         netif_receive_skb(skb);
 436
 437         ndev->stats.rx_bytes += len;
 438         ndev->stats.rx_packets++;
 439
 440 requeue:
 441         xmeta = page_address(new_page) + CPSW_XMETA_OFFSET;
 442         xmeta->ndev = ndev;
 443         xmeta->ch = ch;
 444
 445         dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;
 446         ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 447                                        pkt_size, 0);
 448         if (ret < 0) {
 449                 WARN_ON(ret == -ENOMEM);
 450                 page_pool_recycle_direct(pool, new_page);
 451         }
 452 }
 453
 454 static void _cpsw_adjust_link(struct cpsw_slave *slave,
 455                               struct cpsw_priv *priv, bool *link)
 456 {
 457         struct phy_device       *phy = slave->phy;
 458         u32                     mac_control = 0;
 459         u32                     slave_port;
 460         struct cpsw_common *cpsw = priv->cpsw;
 461
 462         if (!phy)
 463                 return;
 464
 465         slave_port = cpsw_get_slave_port(slave->slave_num);
 466
 467         if (phy->link) {
 468                 mac_control = CPSW_SL_CTL_GMII_EN;
 469
 470                 if (phy->speed == 1000)
 471                         mac_control |= CPSW_SL_CTL_GIG;
 472                 if (phy->duplex)
 473                         mac_control |= CPSW_SL_CTL_FULLDUPLEX;
 474
 475                 /* set speed_in input in case RMII mode is used in 100Mbps */
 476                 if (phy->speed == 100)
 477                         mac_control |= CPSW_SL_CTL_IFCTL_A;
 478                 /* in band mode only works in 10Mbps RGMII mode */
 479                 else if ((phy->speed == 10) && phy_interface_is_rgmii(phy))
 480                         mac_control |= CPSW_SL_CTL_EXT_EN; /* In Band mode */
 481
 482                 if (priv->rx_pause)
 483                         mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
 484
 485                 if (priv->tx_pause)
 486                         mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
 487
 488                 if (mac_control != slave->mac_control)
 489                         cpsw_sl_ctl_set(slave->mac_sl, mac_control);
 490
 491                 /* enable forwarding */
 492                 cpsw_ale_control_set(cpsw->ale, slave_port,
 493                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 494
 495                 *link = true;
 496
 497                 if (priv->shp_cfg_speed &&
 498                     priv->shp_cfg_speed != slave->phy->speed &&
 499                     !cpsw_shp_is_off(priv))
 500                         dev_warn(priv->dev,
 501                                  "Speed was changed, CBS shaper speeds are changed!");
 502         } else {
 503                 mac_control = 0;
 504                 /* disable forwarding */
 505                 cpsw_ale_control_set(cpsw->ale, slave_port,
 506                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 507
 508                 cpsw_sl_wait_for_idle(slave->mac_sl, 100);
 509
 510                 cpsw_sl_ctl_reset(slave->mac_sl);
 511         }
 512
 513         if (mac_control != slave->mac_control)
 514                 phy_print_status(phy);
 515
 516         slave->mac_control = mac_control;
 517 }
 518
 519 static void cpsw_adjust_link(struct net_device *ndev)
 520 {
 521         struct cpsw_priv        *priv = netdev_priv(ndev);
 522         struct cpsw_common      *cpsw = priv->cpsw;
 523         bool                    link = false;
 524
 525         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 526
 527         if (link) {
 528                 if (cpsw_need_resplit(cpsw))
 529                         cpsw_split_res(cpsw);
 530
 531                 netif_carrier_on(ndev);
 532                 if (netif_running(ndev))
 533                         netif_tx_wake_all_queues(ndev);
 534         } else {
 535                 netif_carrier_off(ndev);
 536                 netif_tx_stop_all_queues(ndev);
 537         }
 538 }
 539
 540 static inline void cpsw_add_dual_emac_def_ale_entries(
 541                 struct cpsw_priv *priv, struct cpsw_slave *slave,
 542                 u32 slave_port)
 543 {
 544         struct cpsw_common *cpsw = priv->cpsw;
 545         u32 port_mask = 1 << slave_port | ALE_PORT_HOST;
 546
 547         if (cpsw->version == CPSW_VERSION_1)
 548                 slave_write(slave, slave->port_vlan, CPSW1_PORT_VLAN);
 549         else
 550                 slave_write(slave, slave->port_vlan, CPSW2_PORT_VLAN);
 551         cpsw_ale_add_vlan(cpsw->ale, slave->port_vlan, port_mask,
 552                           port_mask, port_mask, 0);
 553         cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 554                            ALE_PORT_HOST, ALE_VLAN, slave->port_vlan, 0);
 555         cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
 556                            HOST_PORT_NUM, ALE_VLAN |
 557                            ALE_SECURE, slave->port_vlan);
 558         cpsw_ale_control_set(cpsw->ale, slave_port,
 559                              ALE_PORT_DROP_UNKNOWN_VLAN, 1);
 560 }
 561
 562 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 563 {
 564         u32 slave_port;
 565         struct phy_device *phy;
 566         struct cpsw_common *cpsw = priv->cpsw;
 567
 568         cpsw_sl_reset(slave->mac_sl, 100);
 569         cpsw_sl_ctl_reset(slave->mac_sl);
 570
 571         /* setup priority mapping */
 572         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_PRI_MAP,
 573                           RX_PRIORITY_MAPPING);
 574
 575         switch (cpsw->version) {
 576         case CPSW_VERSION_1:
 577                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW1_TX_PRI_MAP);
 578                 /* Increase RX FIFO size to 5 for supporting fullduplex
 579                  * flow control mode
 580                  */
 581                 slave_write(slave,
 582                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 583                             CPSW_MAX_BLKS_RX, CPSW1_MAX_BLKS);
 584                 break;
 585         case CPSW_VERSION_2:
 586         case CPSW_VERSION_3:
 587         case CPSW_VERSION_4:
 588                 slave_write(slave, TX_PRIORITY_MAPPING, CPSW2_TX_PRI_MAP);
 589                 /* Increase RX FIFO size to 5 for supporting fullduplex
 590                  * flow control mode
 591                  */
 592                 slave_write(slave,
 593                             (CPSW_MAX_BLKS_TX << CPSW_MAX_BLKS_TX_SHIFT) |
 594                             CPSW_MAX_BLKS_RX, CPSW2_MAX_BLKS);
 595                 break;
 596         }
 597
 598         /* setup max packet size, and mac address */
 599         cpsw_sl_reg_write(slave->mac_sl, CPSW_SL_RX_MAXLEN,
 600                           cpsw->rx_packet_max);
 601         cpsw_set_slave_mac(slave, priv);
 602
 603         slave->mac_control = 0; /* no link yet */
 604
 605         slave_port = cpsw_get_slave_port(slave->slave_num);
 606
 607         if (cpsw->data.dual_emac)
 608                 cpsw_add_dual_emac_def_ale_entries(priv, slave, slave_port);
 609         else
 610                 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 611                                    1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
 612
 613         if (slave->data->phy_node) {
 614                 phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 615                                  &cpsw_adjust_link, 0, slave->data->phy_if);
 616                 if (!phy) {
 617                         dev_err(priv->dev, "phy \"%pOF\" not found on slave %d\n",
 618                                 slave->data->phy_node,
 619                                 slave->slave_num);
 620                         return;
 621                 }
 622         } else {
 623                 phy = phy_connect(priv->ndev, slave->data->phy_id,
 624                                  &cpsw_adjust_link, slave->data->phy_if);
 625                 if (IS_ERR(phy)) {
 626                         dev_err(priv->dev,
 627                                 "phy \"%s\" not found on slave %d, err %ld\n",
 628                                 slave->data->phy_id, slave->slave_num,
 629                                 PTR_ERR(phy));
 630                         return;
 631                 }
 632         }
 633
 634         phy->mac_managed_pm = true;
 635
 636         slave->phy = phy;
 637
 638         phy_disable_eee(slave->phy);
 639
 640         phy_attached_info(slave->phy);
 641
 642         phy_start(slave->phy);
 643
 644         /* Configure GMII_SEL register */
 645         if (!IS_ERR(slave->data->ifphy))
 646                 phy_set_mode_ext(slave->data->ifphy, PHY_MODE_ETHERNET,
 647                                  slave->data->phy_if);
 648         else
 649                 cpsw_phy_sel(cpsw->dev, slave->phy->interface,
 650                              slave->slave_num);
 651 }
 652
 653 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)
 654 {
 655         struct cpsw_common *cpsw = priv->cpsw;
 656         const int vlan = cpsw->data.default_vlan;
 657         u32 reg;
 658         int i;
 659         int unreg_mcast_mask;
 660
 661         reg = (cpsw->version == CPSW_VERSION_1) ? CPSW1_PORT_VLAN :
 662                CPSW2_PORT_VLAN;
 663
 664         writel(vlan, &cpsw->host_port_regs->port_vlan);
 665
 666         for (i = 0; i < cpsw->data.slaves; i++)
 667                 slave_write(cpsw->slaves + i, vlan, reg);
 668
 669         if (priv->ndev->flags & IFF_ALLMULTI)
 670                 unreg_mcast_mask = ALE_ALL_PORTS;
 671         else
 672                 unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
 673
 674         cpsw_ale_add_vlan(cpsw->ale, vlan, ALE_ALL_PORTS,
 675                           ALE_ALL_PORTS, ALE_ALL_PORTS,
 676                           unreg_mcast_mask);
 677 }
 678
 679 static void cpsw_init_host_port(struct cpsw_priv *priv)
 680 {
 681         u32 fifo_mode;
 682         u32 control_reg;
 683         struct cpsw_common *cpsw = priv->cpsw;
 684
 685         /* soft reset the controller and initialize ale */
 686         soft_reset("cpsw", &cpsw->regs->soft_reset);
 687         cpsw_ale_start(cpsw->ale);
 688
 689         /* switch to vlan aware mode */
 690         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM, ALE_VLAN_AWARE,
 691                              CPSW_ALE_VLAN_AWARE);
 692         control_reg = readl(&cpsw->regs->control);
 693         control_reg |= CPSW_VLAN_AWARE | CPSW_RX_VLAN_ENCAP;
 694         writel(control_reg, &cpsw->regs->control);
 695         fifo_mode = (cpsw->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
 696                      CPSW_FIFO_NORMAL_MODE;
 697         writel(fifo_mode, &cpsw->host_port_regs->tx_in_ctl);
 698
 699         /* setup host port priority mapping */
 700         writel_relaxed(CPDMA_TX_PRIORITY_MAP,
 701                        &cpsw->host_port_regs->cpdma_tx_pri_map);
 702         writel_relaxed(0, &cpsw->host_port_regs->cpdma_rx_chan_map);
 703
 704         cpsw_ale_control_set(cpsw->ale, HOST_PORT_NUM,
 705                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 706
 707         if (!cpsw->data.dual_emac) {
 708                 cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 709                                    0, 0);
 710                 cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
 711                                    ALE_PORT_HOST, 0, 0, ALE_MCAST_FWD_2);
 712         }
 713 }
 714
 715 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_common *cpsw)
 716 {
 717         u32 slave_port;
 718
 719         slave_port = cpsw_get_slave_port(slave->slave_num);
 720
 721         if (!slave->phy)
 722                 return;
 723         phy_stop(slave->phy);
 724         phy_disconnect(slave->phy);
 725         slave->phy = NULL;
 726         cpsw_ale_control_set(cpsw->ale, slave_port,
 727                              ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 728         cpsw_sl_reset(slave->mac_sl, 100);
 729         cpsw_sl_ctl_reset(slave->mac_sl);
 730 }
 731
 732 static int cpsw_restore_vlans(struct net_device *vdev, int vid, void *arg)
 733 {
 734         struct cpsw_priv *priv = arg;
 735
 736         if (!vdev)
 737                 return 0;
 738
 739         cpsw_ndo_vlan_rx_add_vid(priv->ndev, 0, vid);
 740         return 0;
 741 }
 742
 743 /* restore resources after port reset */
 744 static void cpsw_restore(struct cpsw_priv *priv)
 745 {
 746         /* restore vlan configurations */
 747         vlan_for_each(priv->ndev, cpsw_restore_vlans, priv);
 748
 749         /* restore MQPRIO offload */
 750         for_each_slave(priv, cpsw_mqprio_resume, priv);
 751
 752         /* restore CBS offload */
 753         for_each_slave(priv, cpsw_cbs_resume, priv);
 754 }
 755
 756 static int cpsw_ndo_open(struct net_device *ndev)
 757 {
 758         struct cpsw_priv *priv = netdev_priv(ndev);
 759         struct cpsw_common *cpsw = priv->cpsw;
 760         int ret;
 761         u32 reg;
 762
 763         ret = pm_runtime_resume_and_get(cpsw->dev);
 764         if (ret < 0)
 765                 return ret;
 766
 767         netif_carrier_off(ndev);
 768
 769         /* Notify the stack of the actual queue counts. */
 770         ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 771         if (ret) {
 772                 dev_err(priv->dev, "cannot set real number of tx queues\n");
 773                 goto err_cleanup;
 774         }
 775
 776         ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 777         if (ret) {
 778                 dev_err(priv->dev, "cannot set real number of rx queues\n");
 779                 goto err_cleanup;
 780         }
 781
 782         reg = cpsw->version;
 783
 784         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
 785                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
 786                  CPSW_RTL_VERSION(reg));
 787
 788         /* Initialize host and slave ports */
 789         if (!cpsw->usage_count)
 790                 cpsw_init_host_port(priv);
 791         for_each_slave(priv, cpsw_slave_open, priv);
 792
 793         /* Add default VLAN */
 794         if (!cpsw->data.dual_emac)
 795                 cpsw_add_default_vlan(priv);
 796         else
 797                 cpsw_ale_add_vlan(cpsw->ale, cpsw->data.default_vlan,
 798                                   ALE_ALL_PORTS, ALE_ALL_PORTS, 0, 0);
 799
 800         /* initialize shared resources for every ndev */
 801         if (!cpsw->usage_count) {
 802                 /* disable priority elevation */
 803                 writel_relaxed(0, &cpsw->regs->ptype);
 804
 805                 /* enable statistics collection only on all ports */
 806                 writel_relaxed(0x7, &cpsw->regs->stat_port_en);
 807
 808                 /* Enable internal fifo flow control */
 809                 writel(0x7, &cpsw->regs->flow_control);
 810
 811                 napi_enable(&cpsw->napi_rx);
 812                 napi_enable(&cpsw->napi_tx);
 813
 814                 if (cpsw->tx_irq_disabled) {
 815                         cpsw->tx_irq_disabled = false;
 816                         enable_irq(cpsw->irqs_table[1]);
 817                 }
 818
 819                 if (cpsw->rx_irq_disabled) {
 820                         cpsw->rx_irq_disabled = false;
 821                         enable_irq(cpsw->irqs_table[0]);
 822                 }
 823
 824                 /* create rxqs for both infs in dual mac as they use same pool
 825                  * and must be destroyed together when no users.
 826                  */
 827                 ret = cpsw_create_xdp_rxqs(cpsw);
 828                 if (ret < 0)
 829                         goto err_cleanup;
 830
 831                 ret = cpsw_fill_rx_channels(priv);
 832                 if (ret < 0)
 833                         goto err_cleanup;
 834
 835                 if (cpsw->cpts) {
 836                         if (cpts_register(cpsw->cpts))
 837                                 dev_err(priv->dev, "error registering cpts device\n");
 838                         else
 839                                 writel(0x10, &cpsw->wr_regs->misc_en);
 840                 }
 841         }
 842
 843         cpsw_restore(priv);
 844
 845         /* Enable Interrupt pacing if configured */
 846         if (cpsw->coal_intvl != 0) {
 847                 struct ethtool_coalesce coal;
 848
 849                 coal.rx_coalesce_usecs = cpsw->coal_intvl;
 850                 cpsw_set_coalesce(ndev, &coal, NULL, NULL);
 851         }
 852
 853         cpdma_ctlr_start(cpsw->dma);
 854         cpsw_intr_enable(cpsw);
 855         cpsw->usage_count++;
 856
 857         return 0;
 858
 859 err_cleanup:
 860         if (!cpsw->usage_count) {
 861                 napi_disable(&cpsw->napi_rx);
 862                 napi_disable(&cpsw->napi_tx);
 863                 cpdma_ctlr_stop(cpsw->dma);
 864                 cpsw_destroy_xdp_rxqs(cpsw);
 865         }
 866
 867         for_each_slave(priv, cpsw_slave_stop, cpsw);
 868         pm_runtime_put_sync(cpsw->dev);
 869         netif_carrier_off(priv->ndev);
 870         return ret;
 871 }
 872
 873 static int cpsw_ndo_stop(struct net_device *ndev)
 874 {
 875         struct cpsw_priv *priv = netdev_priv(ndev);
 876         struct cpsw_common *cpsw = priv->cpsw;
 877
 878         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
 879         __hw_addr_ref_unsync_dev(&ndev->mc, ndev, cpsw_purge_all_mc);
 880         netif_tx_stop_all_queues(priv->ndev);
 881         netif_carrier_off(priv->ndev);
 882
 883         if (cpsw->usage_count <= 1) {
 884                 napi_disable(&cpsw->napi_rx);
 885                 napi_disable(&cpsw->napi_tx);
 886                 cpts_unregister(cpsw->cpts);
 887                 cpsw_intr_disable(cpsw);
 888                 cpdma_ctlr_stop(cpsw->dma);
 889                 cpsw_ale_stop(cpsw->ale);
 890                 cpsw_destroy_xdp_rxqs(cpsw);
 891         }
 892         for_each_slave(priv, cpsw_slave_stop, cpsw);
 893
 894         if (cpsw_need_resplit(cpsw))
 895                 cpsw_split_res(cpsw);
 896
 897         cpsw->usage_count--;
 898         pm_runtime_put_sync(cpsw->dev);
 899         return 0;
 900 }
 901
 902 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 903                                        struct net_device *ndev)
 904 {
 905         struct cpsw_priv *priv = netdev_priv(ndev);
 906         struct cpsw_common *cpsw = priv->cpsw;
 907         struct cpts *cpts = cpsw->cpts;
 908         struct netdev_queue *txq;
 909         struct cpdma_chan *txch;
 910         int ret, q_idx;
 911
 912         if (skb_put_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 913                 cpsw_err(priv, tx_err, "packet pad failed\n");
 914                 ndev->stats.tx_dropped++;
 915                 return NET_XMIT_DROP;
 916         }
 917
 918         if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
 919             priv->tx_ts_enabled && cpts_can_timestamp(cpts, skb))
 920                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 921
 922         q_idx = skb_get_queue_mapping(skb);
 923         if (q_idx >= cpsw->tx_ch_num)
 924                 q_idx = q_idx % cpsw->tx_ch_num;
 925
 926         txch = cpsw->txv[q_idx].ch;
 927         txq = netdev_get_tx_queue(ndev, q_idx);
 928         skb_tx_timestamp(skb);
 929         ret = cpdma_chan_submit(txch, skb, skb->data, skb->len,
 930                                 priv->emac_port + cpsw->data.dual_emac);
 931         if (unlikely(ret != 0)) {
 932                 cpsw_err(priv, tx_err, "desc submit failed\n");
 933                 goto fail;
 934         }
 935
 936         /* If there is no more tx desc left free then we need to
 937          * tell the kernel to stop sending us tx frames.
 938          */
 939         if (unlikely(!cpdma_check_free_tx_desc(txch))) {
 940                 netif_tx_stop_queue(txq);
 941
 942                 /* Barrier, so that stop_queue visible to other cpus */
 943                 smp_mb__after_atomic();
 944
 945                 if (cpdma_check_free_tx_desc(txch))
 946                         netif_tx_wake_queue(txq);
 947         }
 948
 949         return NETDEV_TX_OK;
 950 fail:
 951         ndev->stats.tx_dropped++;
 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         return NETDEV_TX_BUSY;
 961 }
 962
 963 static int cpsw_ndo_set_mac_address(struct net_device *ndev, void *p)
 964 {
 965         struct cpsw_priv *priv = netdev_priv(ndev);
 966         struct sockaddr *addr = (struct sockaddr *)p;
 967         struct cpsw_common *cpsw = priv->cpsw;
 968         int flags = 0;
 969         u16 vid = 0;
 970         int ret;
 971
 972         if (!is_valid_ether_addr(addr->sa_data))
 973                 return -EADDRNOTAVAIL;
 974
 975         ret = pm_runtime_resume_and_get(cpsw->dev);
 976         if (ret < 0)
 977                 return ret;
 978
 979         if (cpsw->data.dual_emac) {
 980                 vid = cpsw->slaves[priv->emac_port].port_vlan;
 981                 flags = ALE_VLAN;
 982         }
 983
 984         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr, HOST_PORT_NUM,
 985                            flags, vid);
 986         cpsw_ale_add_ucast(cpsw->ale, addr->sa_data, HOST_PORT_NUM,
 987                            flags, vid);
 988
 989         memcpy(priv->mac_addr, addr->sa_data, ETH_ALEN);
 990         eth_hw_addr_set(ndev, priv->mac_addr);
 991         for_each_slave(priv, cpsw_set_slave_mac, priv);
 992
 993         pm_runtime_put(cpsw->dev);
 994
 995         return 0;
 996 }
 997
 998 static inline int cpsw_add_vlan_ale_entry(struct cpsw_priv *priv,
 999                                 unsigned short vid)
1000 {
1001         int ret;
1002         int unreg_mcast_mask = 0;
1003         int mcast_mask;
1004         u32 port_mask;
1005         struct cpsw_common *cpsw = priv->cpsw;
1006
1007         if (cpsw->data.dual_emac) {
1008                 port_mask = (1 << (priv->emac_port + 1)) | ALE_PORT_HOST;
1009
1010                 mcast_mask = ALE_PORT_HOST;
1011                 if (priv->ndev->flags & IFF_ALLMULTI)
1012                         unreg_mcast_mask = mcast_mask;
1013         } else {
1014                 port_mask = ALE_ALL_PORTS;
1015                 mcast_mask = port_mask;
1016
1017                 if (priv->ndev->flags & IFF_ALLMULTI)
1018                         unreg_mcast_mask = ALE_ALL_PORTS;
1019                 else
1020                         unreg_mcast_mask = ALE_PORT_1 | ALE_PORT_2;
1021         }
1022
1023         ret = cpsw_ale_add_vlan(cpsw->ale, vid, port_mask, 0, port_mask,
1024                                 unreg_mcast_mask);
1025         if (ret != 0)
1026                 return ret;
1027
1028         ret = cpsw_ale_add_ucast(cpsw->ale, priv->mac_addr,
1029                                  HOST_PORT_NUM, ALE_VLAN, vid);
1030         if (ret != 0)
1031                 goto clean_vid;
1032
1033         ret = cpsw_ale_add_mcast(cpsw->ale, priv->ndev->broadcast,
1034                                  mcast_mask, ALE_VLAN, vid, 0);
1035         if (ret != 0)
1036                 goto clean_vlan_ucast;
1037         return 0;
1038
1039 clean_vlan_ucast:
1040         cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1041                            HOST_PORT_NUM, ALE_VLAN, vid);
1042 clean_vid:
1043         cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1044         return ret;
1045 }
1046
1047 static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
1048                                     __be16 proto, u16 vid)
1049 {
1050         struct cpsw_priv *priv = netdev_priv(ndev);
1051         struct cpsw_common *cpsw = priv->cpsw;
1052         int ret;
1053
1054         if (vid == cpsw->data.default_vlan)
1055                 return 0;
1056
1057         ret = pm_runtime_resume_and_get(cpsw->dev);
1058         if (ret < 0)
1059                 return ret;
1060
1061         if (cpsw->data.dual_emac) {
1062                 /* In dual EMAC, reserved VLAN id should not be used for
1063                  * creating VLAN interfaces as this can break the dual
1064                  * EMAC port separation
1065                  */
1066                 int i;
1067
1068                 for (i = 0; i < cpsw->data.slaves; i++) {
1069                         if (vid == cpsw->slaves[i].port_vlan) {
1070                                 ret = -EINVAL;
1071                                 goto err;
1072                         }
1073                 }
1074         }
1075
1076         dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
1077         ret = cpsw_add_vlan_ale_entry(priv, vid);
1078 err:
1079         pm_runtime_put(cpsw->dev);
1080         return ret;
1081 }
1082
1083 static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
1084                                      __be16 proto, u16 vid)
1085 {
1086         struct cpsw_priv *priv = netdev_priv(ndev);
1087         struct cpsw_common *cpsw = priv->cpsw;
1088         int ret;
1089
1090         if (vid == cpsw->data.default_vlan)
1091                 return 0;
1092
1093         ret = pm_runtime_resume_and_get(cpsw->dev);
1094         if (ret < 0)
1095                 return ret;
1096
1097         if (cpsw->data.dual_emac) {
1098                 int i;
1099
1100                 for (i = 0; i < cpsw->data.slaves; i++) {
1101                         if (vid == cpsw->slaves[i].port_vlan)
1102                                 goto err;
1103                 }
1104         }
1105
1106         dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
1107         ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
1108         ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
1109                                   HOST_PORT_NUM, ALE_VLAN, vid);
1110         ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
1111                                   0, ALE_VLAN, vid);
1112         ret |= cpsw_ale_flush_multicast(cpsw->ale, ALE_PORT_HOST, vid);
1113 err:
1114         pm_runtime_put(cpsw->dev);
1115         return ret;
1116 }
1117
1118 static int cpsw_ndo_xdp_xmit(struct net_device *ndev, int n,
1119                              struct xdp_frame **frames, u32 flags)
1120 {
1121         struct cpsw_priv *priv = netdev_priv(ndev);
1122         struct cpsw_common *cpsw = priv->cpsw;
1123         struct xdp_frame *xdpf;
1124         int i, nxmit = 0, port;
1125
1126         if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
1127                 return -EINVAL;
1128
1129         for (i = 0; i < n; i++) {
1130                 xdpf = frames[i];
1131                 if (xdpf->len < CPSW_MIN_PACKET_SIZE)
1132                         break;
1133
1134                 port = priv->emac_port + cpsw->data.dual_emac;
1135                 if (cpsw_xdp_tx_frame(priv, xdpf, NULL, port))
1136                         break;
1137                 nxmit++;
1138         }
1139
1140         return nxmit;
1141 }
1142
1143 #ifdef CONFIG_NET_POLL_CONTROLLER
1144 static void cpsw_ndo_poll_controller(struct net_device *ndev)
1145 {
1146         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1147
1148         cpsw_intr_disable(cpsw);
1149         cpsw_rx_interrupt(cpsw->irqs_table[0], cpsw);
1150         cpsw_tx_interrupt(cpsw->irqs_table[1], cpsw);
1151         cpsw_intr_enable(cpsw);
1152 }
1153 #endif
1154
1155 static const struct net_device_ops cpsw_netdev_ops = {
1156         .ndo_open               = cpsw_ndo_open,
1157         .ndo_stop               = cpsw_ndo_stop,
1158         .ndo_start_xmit         = cpsw_ndo_start_xmit,
1159         .ndo_set_mac_address    = cpsw_ndo_set_mac_address,
1160         .ndo_eth_ioctl          = cpsw_ndo_ioctl,
1161         .ndo_validate_addr      = eth_validate_addr,
1162         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
1163         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
1164         .ndo_set_tx_maxrate     = cpsw_ndo_set_tx_maxrate,
1165 #ifdef CONFIG_NET_POLL_CONTROLLER
1166         .ndo_poll_controller    = cpsw_ndo_poll_controller,
1167 #endif
1168         .ndo_vlan_rx_add_vid    = cpsw_ndo_vlan_rx_add_vid,
1169         .ndo_vlan_rx_kill_vid   = cpsw_ndo_vlan_rx_kill_vid,
1170         .ndo_setup_tc           = cpsw_ndo_setup_tc,
1171         .ndo_bpf                = cpsw_ndo_bpf,
1172         .ndo_xdp_xmit           = cpsw_ndo_xdp_xmit,
1173 };
1174
1175 static void cpsw_get_drvinfo(struct net_device *ndev,
1176                              struct ethtool_drvinfo *info)
1177 {
1178         struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
1179         struct platform_device  *pdev = to_platform_device(cpsw->dev);
1180
1181         strscpy(info->driver, "cpsw", sizeof(info->driver));
1182         strscpy(info->version, "1.0", sizeof(info->version));
1183         strscpy(info->bus_info, pdev->name, sizeof(info->bus_info));
1184 }
1185
1186 static int cpsw_set_pauseparam(struct net_device *ndev,
1187                                struct ethtool_pauseparam *pause)
1188 {
1189         struct cpsw_priv *priv = netdev_priv(ndev);
1190         bool link;
1191
1192         priv->rx_pause = pause->rx_pause ? true : false;
1193         priv->tx_pause = pause->tx_pause ? true : false;
1194
1195         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
1196         return 0;
1197 }
1198
1199 static int cpsw_set_channels(struct net_device *ndev,
1200                              struct ethtool_channels *chs)
1201 {
1202         return cpsw_set_channels_common(ndev, chs, cpsw_rx_handler);
1203 }
1204
1205 static const struct ethtool_ops cpsw_ethtool_ops = {
1206         .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
1207         .get_drvinfo    = cpsw_get_drvinfo,
1208         .get_msglevel   = cpsw_get_msglevel,
1209         .set_msglevel   = cpsw_set_msglevel,
1210         .get_link       = ethtool_op_get_link,
1211         .get_ts_info    = cpsw_get_ts_info,
1212         .get_coalesce   = cpsw_get_coalesce,
1213         .set_coalesce   = cpsw_set_coalesce,
1214         .get_sset_count         = cpsw_get_sset_count,
1215         .get_strings            = cpsw_get_strings,
1216         .get_ethtool_stats      = cpsw_get_ethtool_stats,
1217         .get_pauseparam         = cpsw_get_pauseparam,
1218         .set_pauseparam         = cpsw_set_pauseparam,
1219         .get_wol        = cpsw_get_wol,
1220         .set_wol        = cpsw_set_wol,
1221         .get_regs_len   = cpsw_get_regs_len,
1222         .get_regs       = cpsw_get_regs,
1223         .begin          = cpsw_ethtool_op_begin,
1224         .complete       = cpsw_ethtool_op_complete,
1225         .get_channels   = cpsw_get_channels,
1226         .set_channels   = cpsw_set_channels,
1227         .get_link_ksettings     = cpsw_get_link_ksettings,
1228         .set_link_ksettings     = cpsw_set_link_ksettings,
1229         .get_eee        = cpsw_get_eee,
1230         .nway_reset     = cpsw_nway_reset,
1231         .get_ringparam = cpsw_get_ringparam,
1232         .set_ringparam = cpsw_set_ringparam,
1233 };
1234
1235 static int cpsw_probe_dt(struct cpsw_platform_data *data,
1236                          struct platform_device *pdev)
1237 {
1238         struct device_node *node = pdev->dev.of_node;
1239         struct device_node *slave_node;
1240         int i = 0, ret;
1241         u32 prop;
1242
1243         if (!node)
1244                 return -EINVAL;
1245
1246         if (of_property_read_u32(node, "slaves", &prop)) {
1247                 dev_err(&pdev->dev, "Missing slaves property in the DT.\n");
1248                 return -EINVAL;
1249         }
1250         data->slaves = prop;
1251
1252         if (of_property_read_u32(node, "active_slave", &prop)) {
1253                 dev_err(&pdev->dev, "Missing active_slave property in the DT.\n");
1254                 return -EINVAL;
1255         }
1256         data->active_slave = prop;
1257
1258         data->slave_data = devm_kcalloc(&pdev->dev,
1259                                         data->slaves,
1260                                         sizeof(struct cpsw_slave_data),
1261                                         GFP_KERNEL);
1262         if (!data->slave_data)
1263                 return -ENOMEM;
1264
1265         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
1266                 dev_err(&pdev->dev, "Missing cpdma_channels property in the DT.\n");
1267                 return -EINVAL;
1268         }
1269         data->channels = prop;
1270
1271         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
1272                 dev_err(&pdev->dev, "Missing bd_ram_size property in the DT.\n");
1273                 return -EINVAL;
1274         }
1275         data->bd_ram_size = prop;
1276
1277         if (of_property_read_u32(node, "mac_control", &prop)) {
1278                 dev_err(&pdev->dev, "Missing mac_control property in the DT.\n");
1279                 return -EINVAL;
1280         }
1281         data->mac_control = prop;
1282
1283         if (of_property_read_bool(node, "dual_emac"))
1284                 data->dual_emac = true;
1285
1286         /*
1287          * Populate all the child nodes here...
1288          */
1289         ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
1290         /* We do not want to force this, as in some cases may not have child */
1291         if (ret)
1292                 dev_warn(&pdev->dev, "Doesn't have any child node\n");
1293
1294         for_each_available_child_of_node(node, slave_node) {
1295                 struct cpsw_slave_data *slave_data = data->slave_data + i;
1296                 int lenp;
1297                 const __be32 *parp;
1298
1299                 /* This is no slave child node, continue */
1300                 if (!of_node_name_eq(slave_node, "slave"))
1301                         continue;
1302
1303                 slave_data->ifphy = devm_of_phy_get(&pdev->dev, slave_node,
1304                                                     NULL);
1305                 if (!IS_ENABLED(CONFIG_TI_CPSW_PHY_SEL) &&
1306                     IS_ERR(slave_data->ifphy)) {
1307                         ret = PTR_ERR(slave_data->ifphy);
1308                         dev_err(&pdev->dev,
1309                                 "%d: Error retrieving port phy: %d\n", i, ret);
1310                         goto err_node_put;
1311                 }
1312
1313                 slave_data->slave_node = slave_node;
1314                 slave_data->phy_node = of_parse_phandle(slave_node,
1315                                                         "phy-handle", 0);
1316                 parp = of_get_property(slave_node, "phy_id", &lenp);
1317                 if (slave_data->phy_node) {
1318                         dev_dbg(&pdev->dev,
1319                                 "slave[%d] using phy-handle=\"%pOF\"\n",
1320                                 i, slave_data->phy_node);
1321                 } else if (of_phy_is_fixed_link(slave_node)) {
1322                         /* In the case of a fixed PHY, the DT node associated
1323                          * to the PHY is the Ethernet MAC DT node.
1324                          */
1325                         ret = of_phy_register_fixed_link(slave_node);
1326                         if (ret) {
1327                                 dev_err_probe(&pdev->dev, ret, "failed to register fixed-link phy\n");
1328                                 goto err_node_put;
1329                         }
1330                         slave_data->phy_node = of_node_get(slave_node);
1331                 } else if (parp) {
1332                         u32 phyid;
1333                         struct device_node *mdio_node;
1334                         struct platform_device *mdio;
1335
1336                         if (lenp != (sizeof(__be32) * 2)) {
1337                                 dev_err(&pdev->dev, "Invalid slave[%d] phy_id property\n", i);
1338                                 goto no_phy_slave;
1339                         }
1340                         mdio_node = of_find_node_by_phandle(be32_to_cpup(parp));
1341                         phyid = be32_to_cpup(parp+1);
1342                         mdio = of_find_device_by_node(mdio_node);
1343                         of_node_put(mdio_node);
1344                         if (!mdio) {
1345                                 dev_err(&pdev->dev, "Missing mdio platform device\n");
1346                                 ret = -EINVAL;
1347                                 goto err_node_put;
1348                         }
1349                         snprintf(slave_data->phy_id, sizeof(slave_data->phy_id),
1350                                  PHY_ID_FMT, mdio->name, phyid);
1351                         put_device(&mdio->dev);
1352                 } else {
1353                         dev_err(&pdev->dev,
1354                                 "No slave[%d] phy_id, phy-handle, or fixed-link property\n",
1355                                 i);
1356                         goto no_phy_slave;
1357                 }
1358                 ret = of_get_phy_mode(slave_node, &slave_data->phy_if);
1359                 if (ret) {
1360                         dev_err(&pdev->dev, "Missing or malformed slave[%d] phy-mode property\n",
1361                                 i);
1362                         goto err_node_put;
1363                 }
1364
1365 no_phy_slave:
1366                 ret = of_get_mac_address(slave_node, slave_data->mac_addr);
1367                 if (ret) {
1368                         ret = ti_cm_get_macid(&pdev->dev, i,
1369                                               slave_data->mac_addr);
1370                         if (ret)
1371                                 goto err_node_put;
1372                 }
1373                 if (data->dual_emac) {
1374                         if (of_property_read_u32(slave_node, "dual_emac_res_vlan",
1375                                                  &prop)) {
1376                                 dev_err(&pdev->dev, "Missing dual_emac_res_vlan in DT.\n");
1377                                 slave_data->dual_emac_res_vlan = i+1;
1378                                 dev_err(&pdev->dev, "Using %d as Reserved VLAN for %d slave\n",
1379                                         slave_data->dual_emac_res_vlan, i);
1380                         } else {
1381                                 slave_data->dual_emac_res_vlan = prop;
1382                         }
1383                 }
1384
1385                 i++;
1386                 if (i == data->slaves) {
1387                         ret = 0;
1388                         goto err_node_put;
1389                 }
1390         }
1391
1392         return 0;
1393
1394 err_node_put:
1395         of_node_put(slave_node);
1396         return ret;
1397 }
1398
1399 static void cpsw_remove_dt(struct platform_device *pdev)
1400 {
1401         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1402         struct cpsw_platform_data *data = &cpsw->data;
1403         struct device_node *node = pdev->dev.of_node;
1404         struct device_node *slave_node;
1405         int i = 0;
1406
1407         for_each_available_child_of_node(node, slave_node) {
1408                 struct cpsw_slave_data *slave_data = &data->slave_data[i];
1409
1410                 if (!of_node_name_eq(slave_node, "slave"))
1411                         continue;
1412
1413                 if (of_phy_is_fixed_link(slave_node))
1414                         of_phy_deregister_fixed_link(slave_node);
1415
1416                 of_node_put(slave_data->phy_node);
1417
1418                 i++;
1419                 if (i == data->slaves) {
1420                         of_node_put(slave_node);
1421                         break;
1422                 }
1423         }
1424
1425         of_platform_depopulate(&pdev->dev);
1426 }
1427
1428 static int cpsw_probe_dual_emac(struct cpsw_priv *priv)
1429 {
1430         struct cpsw_common              *cpsw = priv->cpsw;
1431         struct cpsw_platform_data       *data = &cpsw->data;
1432         struct net_device               *ndev;
1433         struct cpsw_priv                *priv_sl2;
1434         int ret = 0;
1435
1436         ndev = devm_alloc_etherdev_mqs(cpsw->dev, sizeof(struct cpsw_priv),
1437                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1438         if (!ndev) {
1439                 dev_err(cpsw->dev, "cpsw: error allocating net_device\n");
1440                 return -ENOMEM;
1441         }
1442
1443         priv_sl2 = netdev_priv(ndev);
1444         priv_sl2->cpsw = cpsw;
1445         priv_sl2->ndev = ndev;
1446         priv_sl2->dev  = &ndev->dev;
1447         priv_sl2->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1448
1449         if (is_valid_ether_addr(data->slave_data[1].mac_addr)) {
1450                 memcpy(priv_sl2->mac_addr, data->slave_data[1].mac_addr,
1451                         ETH_ALEN);
1452                 dev_info(cpsw->dev, "cpsw: Detected MACID = %pM\n",
1453                          priv_sl2->mac_addr);
1454         } else {
1455                 eth_random_addr(priv_sl2->mac_addr);
1456                 dev_info(cpsw->dev, "cpsw: Random MACID = %pM\n",
1457                          priv_sl2->mac_addr);
1458         }
1459         eth_hw_addr_set(ndev, priv_sl2->mac_addr);
1460
1461         priv_sl2->emac_port = 1;
1462         cpsw->slaves[1].ndev = ndev;
1463         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1464         ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1465                              NETDEV_XDP_ACT_NDO_XMIT;
1466
1467         ndev->netdev_ops = &cpsw_netdev_ops;
1468         ndev->ethtool_ops = &cpsw_ethtool_ops;
1469
1470         /* register the network device */
1471         SET_NETDEV_DEV(ndev, cpsw->dev);
1472         ndev->dev.of_node = cpsw->slaves[1].data->slave_node;
1473         ret = register_netdev(ndev);
1474         if (ret)
1475                 dev_err(cpsw->dev, "cpsw: error registering net device\n");
1476
1477         return ret;
1478 }
1479
1480 static const struct of_device_id cpsw_of_mtable[] = {
1481         { .compatible = "ti,cpsw"},
1482         { .compatible = "ti,am335x-cpsw"},
1483         { .compatible = "ti,am4372-cpsw"},
1484         { .compatible = "ti,dra7-cpsw"},
1485         { /* sentinel */ },
1486 };
1487 MODULE_DEVICE_TABLE(of, cpsw_of_mtable);
1488
1489 static const struct soc_device_attribute cpsw_soc_devices[] = {
1490         { .family = "AM33xx", .revision = "ES1.0"},
1491         { /* sentinel */ }
1492 };
1493
1494 static int cpsw_probe(struct platform_device *pdev)
1495 {
1496         struct device                   *dev = &pdev->dev;
1497         struct clk                      *clk;
1498         struct cpsw_platform_data       *data;
1499         struct net_device               *ndev;
1500         struct cpsw_priv                *priv;
1501         void __iomem                    *ss_regs;
1502         struct resource                 *ss_res;
1503         struct gpio_descs               *mode;
1504         const struct soc_device_attribute *soc;
1505         struct cpsw_common              *cpsw;
1506         int ret = 0, ch;
1507         int irq;
1508
1509         cpsw = devm_kzalloc(dev, sizeof(struct cpsw_common), GFP_KERNEL);
1510         if (!cpsw)
1511                 return -ENOMEM;
1512
1513         platform_set_drvdata(pdev, cpsw);
1514         cpsw_slave_index = cpsw_slave_index_priv;
1515
1516         cpsw->dev = dev;
1517
1518         mode = devm_gpiod_get_array_optional(dev, "mode", GPIOD_OUT_LOW);
1519         if (IS_ERR(mode)) {
1520                 ret = PTR_ERR(mode);
1521                 dev_err(dev, "gpio request failed, ret %d\n", ret);
1522                 return ret;
1523         }
1524
1525         clk = devm_clk_get(dev, "fck");
1526         if (IS_ERR(clk)) {
1527                 ret = PTR_ERR(clk);
1528                 dev_err(dev, "fck is not found %d\n", ret);
1529                 return ret;
1530         }
1531         cpsw->bus_freq_mhz = clk_get_rate(clk) / 1000000;
1532
1533         ss_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &ss_res);
1534         if (IS_ERR(ss_regs))
1535                 return PTR_ERR(ss_regs);
1536         cpsw->regs = ss_regs;
1537
1538         cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
1539         if (IS_ERR(cpsw->wr_regs))
1540                 return PTR_ERR(cpsw->wr_regs);
1541
1542         /* RX IRQ */
1543         irq = platform_get_irq(pdev, 1);
1544         if (irq < 0)
1545                 return irq;
1546         cpsw->irqs_table[0] = irq;
1547
1548         /* TX IRQ */
1549         irq = platform_get_irq(pdev, 2);
1550         if (irq < 0)
1551                 return irq;
1552         cpsw->irqs_table[1] = irq;
1553
1554         /* get misc irq*/
1555         irq = platform_get_irq(pdev, 3);
1556         if (irq <= 0)
1557                 return irq;
1558         cpsw->misc_irq = irq;
1559
1560         /*
1561          * This may be required here for child devices.
1562          */
1563         pm_runtime_enable(dev);
1564
1565         /* Need to enable clocks with runtime PM api to access module
1566          * registers
1567          */
1568         ret = pm_runtime_resume_and_get(dev);
1569         if (ret < 0)
1570                 goto clean_runtime_disable_ret;
1571
1572         ret = cpsw_probe_dt(&cpsw->data, pdev);
1573         if (ret)
1574                 goto clean_dt_ret;
1575
1576         soc = soc_device_match(cpsw_soc_devices);
1577         if (soc)
1578                 cpsw->quirk_irq = true;
1579
1580         data = &cpsw->data;
1581         cpsw->slaves = devm_kcalloc(dev,
1582                                     data->slaves, sizeof(struct cpsw_slave),
1583                                     GFP_KERNEL);
1584         if (!cpsw->slaves) {
1585                 ret = -ENOMEM;
1586                 goto clean_dt_ret;
1587         }
1588
1589         cpsw->rx_packet_max = max(rx_packet_max, CPSW_MAX_PACKET_SIZE);
1590         cpsw->descs_pool_size = descs_pool_size;
1591
1592         ret = cpsw_init_common(cpsw, ss_regs, ale_ageout,
1593                                ss_res->start + CPSW2_BD_OFFSET,
1594                                descs_pool_size);
1595         if (ret)
1596                 goto clean_dt_ret;
1597
1598         ch = cpsw->quirk_irq ? 0 : 7;
1599         cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, ch, cpsw_tx_handler, 0);
1600         if (IS_ERR(cpsw->txv[0].ch)) {
1601                 dev_err(dev, "error initializing tx dma channel\n");
1602                 ret = PTR_ERR(cpsw->txv[0].ch);
1603                 goto clean_cpts;
1604         }
1605
1606         cpsw->rxv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_rx_handler, 1);
1607         if (IS_ERR(cpsw->rxv[0].ch)) {
1608                 dev_err(dev, "error initializing rx dma channel\n");
1609                 ret = PTR_ERR(cpsw->rxv[0].ch);
1610                 goto clean_cpts;
1611         }
1612         cpsw_split_res(cpsw);
1613
1614         /* setup netdev */
1615         ndev = devm_alloc_etherdev_mqs(dev, sizeof(struct cpsw_priv),
1616                                        CPSW_MAX_QUEUES, CPSW_MAX_QUEUES);
1617         if (!ndev) {
1618                 dev_err(dev, "error allocating net_device\n");
1619                 ret = -ENOMEM;
1620                 goto clean_cpts;
1621         }
1622
1623         priv = netdev_priv(ndev);
1624         priv->cpsw = cpsw;
1625         priv->ndev = ndev;
1626         priv->dev  = dev;
1627         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
1628         priv->emac_port = 0;
1629
1630         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
1631                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
1632                 dev_info(dev, "Detected MACID = %pM\n", priv->mac_addr);
1633         } else {
1634                 eth_random_addr(priv->mac_addr);
1635                 dev_info(dev, "Random MACID = %pM\n", priv->mac_addr);
1636         }
1637
1638         eth_hw_addr_set(ndev, priv->mac_addr);
1639
1640         cpsw->slaves[0].ndev = ndev;
1641
1642         ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX;
1643         ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
1644                              NETDEV_XDP_ACT_NDO_XMIT;
1645
1646         ndev->netdev_ops = &cpsw_netdev_ops;
1647         ndev->ethtool_ops = &cpsw_ethtool_ops;
1648         netif_napi_add(ndev, &cpsw->napi_rx,
1649                        cpsw->quirk_irq ? cpsw_rx_poll : cpsw_rx_mq_poll);
1650         netif_napi_add_tx(ndev, &cpsw->napi_tx,
1651                           cpsw->quirk_irq ? cpsw_tx_poll : cpsw_tx_mq_poll);
1652
1653         /* register the network device */
1654         SET_NETDEV_DEV(ndev, dev);
1655         ndev->dev.of_node = cpsw->slaves[0].data->slave_node;
1656         ret = register_netdev(ndev);
1657         if (ret) {
1658                 dev_err(dev, "error registering net device\n");
1659                 ret = -ENODEV;
1660                 goto clean_cpts;
1661         }
1662
1663         if (cpsw->data.dual_emac) {
1664                 ret = cpsw_probe_dual_emac(priv);
1665                 if (ret) {
1666                         cpsw_err(priv, probe, "error probe slave 2 emac interface\n");
1667                         goto clean_unregister_netdev_ret;
1668                 }
1669         }
1670
1671         /* Grab RX and TX IRQs. Note that we also have RX_THRESHOLD and
1672          * MISC IRQs which are always kept disabled with this driver so
1673          * we will not request them.
1674          *
1675          * If anyone wants to implement support for those, make sure to
1676          * first request and append them to irqs_table array.
1677          */
1678         ret = devm_request_irq(dev, cpsw->irqs_table[0], cpsw_rx_interrupt,
1679                                0, dev_name(dev), cpsw);
1680         if (ret < 0) {
1681                 dev_err(dev, "error attaching irq (%d)\n", ret);
1682                 goto clean_unregister_netdev_ret;
1683         }
1684
1685
1686         ret = devm_request_irq(dev, cpsw->irqs_table[1], cpsw_tx_interrupt,
1687                                0, dev_name(&pdev->dev), cpsw);
1688         if (ret < 0) {
1689                 dev_err(dev, "error attaching irq (%d)\n", ret);
1690                 goto clean_unregister_netdev_ret;
1691         }
1692
1693         if (!cpsw->cpts)
1694                 goto skip_cpts;
1695
1696         ret = devm_request_irq(&pdev->dev, cpsw->misc_irq, cpsw_misc_interrupt,
1697                                0, dev_name(&pdev->dev), cpsw);
1698         if (ret < 0) {
1699                 dev_err(dev, "error attaching misc irq (%d)\n", ret);
1700                 goto clean_unregister_netdev_ret;
1701         }
1702
1703         /* Enable misc CPTS evnt_pend IRQ */
1704         cpts_set_irqpoll(cpsw->cpts, false);
1705
1706 skip_cpts:
1707         cpsw_notice(priv, probe,
1708                     "initialized device (regs %pa, irq %d, pool size %d)\n",
1709                     &ss_res->start, cpsw->irqs_table[0], descs_pool_size);
1710
1711         pm_runtime_put(&pdev->dev);
1712
1713         return 0;
1714
1715 clean_unregister_netdev_ret:
1716         unregister_netdev(ndev);
1717 clean_cpts:
1718         cpts_release(cpsw->cpts);
1719         cpdma_ctlr_destroy(cpsw->dma);
1720 clean_dt_ret:
1721         cpsw_remove_dt(pdev);
1722         pm_runtime_put_sync(&pdev->dev);
1723 clean_runtime_disable_ret:
1724         pm_runtime_disable(&pdev->dev);
1725         return ret;
1726 }
1727
1728 static void cpsw_remove(struct platform_device *pdev)
1729 {
1730         struct cpsw_common *cpsw = platform_get_drvdata(pdev);
1731         int i, ret;
1732
1733         ret = pm_runtime_resume_and_get(&pdev->dev);
1734         if (ret < 0) {
1735                 /* Note, if this error path is taken, we're leaking some
1736                  * resources.
1737                  */
1738                 dev_err(&pdev->dev, "Failed to resume device (%pe)\n",
1739                         ERR_PTR(ret));
1740                 return;
1741         }
1742
1743         for (i = 0; i < cpsw->data.slaves; i++)
1744                 if (cpsw->slaves[i].ndev)
1745                         unregister_netdev(cpsw->slaves[i].ndev);
1746
1747         cpts_release(cpsw->cpts);
1748         cpdma_ctlr_destroy(cpsw->dma);
1749         cpsw_remove_dt(pdev);
1750         pm_runtime_put_sync(&pdev->dev);
1751         pm_runtime_disable(&pdev->dev);
1752 }
1753
1754 #ifdef CONFIG_PM_SLEEP
1755 static int cpsw_suspend(struct device *dev)
1756 {
1757         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1758         int i;
1759
1760         rtnl_lock();
1761
1762         for (i = 0; i < cpsw->data.slaves; i++)
1763                 if (cpsw->slaves[i].ndev)
1764                         if (netif_running(cpsw->slaves[i].ndev))
1765                                 cpsw_ndo_stop(cpsw->slaves[i].ndev);
1766
1767         rtnl_unlock();
1768
1769         /* Select sleep pin state */
1770         pinctrl_pm_select_sleep_state(dev);
1771
1772         return 0;
1773 }
1774
1775 static int cpsw_resume(struct device *dev)
1776 {
1777         struct cpsw_common *cpsw = dev_get_drvdata(dev);
1778         int i;
1779
1780         /* Select default pin state */
1781         pinctrl_pm_select_default_state(dev);
1782
1783         /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
1784         rtnl_lock();
1785
1786         for (i = 0; i < cpsw->data.slaves; i++)
1787                 if (cpsw->slaves[i].ndev)
1788                         if (netif_running(cpsw->slaves[i].ndev))
1789                                 cpsw_ndo_open(cpsw->slaves[i].ndev);
1790
1791         rtnl_unlock();
1792
1793         return 0;
1794 }
1795 #endif
1796
1797 static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
1798
1799 static struct platform_driver cpsw_driver = {
1800         .driver = {
1801                 .name    = "cpsw",
1802                 .pm      = &cpsw_pm_ops,
1803                 .of_match_table = cpsw_of_mtable,
1804         },
1805         .probe = cpsw_probe,
1806         .remove = cpsw_remove,
1807 };
1808
1809 module_platform_driver(cpsw_driver);
1810
1811 MODULE_LICENSE("GPL");
1812 MODULE_AUTHOR("Cyril Chemparathy <[email protected]>");
1813 MODULE_AUTHOR("Mugunthan V N <[email protected]>");
1814 MODULE_DESCRIPTION("TI CPSW Ethernet driver");