drivers/net/ethernet/ti/cpsw.c

   1 /*
   2  * Texas Instruments Ethernet Switch Driver
   3  *
   4  * Copyright (C) 2012 Texas Instruments
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation version 2.
   9  *
  10  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11  * kind, whether express or implied; without even the implied warranty
  12  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/io.h>
  18 #include <linux/clk.h>
  19 #include <linux/timer.h>
  20 #include <linux/module.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/irqreturn.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/if_ether.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/phy.h>
  28 #include <linux/workqueue.h>
  29 #include <linux/delay.h>
  30 #include <linux/pm_runtime.h>
  31 #include <linux/of.h>
  32 #include <linux/of_net.h>
  33 #include <linux/of_device.h>
  34
  35 #include <linux/platform_data/cpsw.h>
  36
  37 #include "cpsw_ale.h"
  38 #include "davinci_cpdma.h"
  39
  40 #define CPSW_DEBUG      (NETIF_MSG_HW           | NETIF_MSG_WOL         | \
  41                          NETIF_MSG_DRV          | NETIF_MSG_LINK        | \
  42                          NETIF_MSG_IFUP         | NETIF_MSG_INTR        | \
  43                          NETIF_MSG_PROBE        | NETIF_MSG_TIMER       | \
  44                          NETIF_MSG_IFDOWN       | NETIF_MSG_RX_ERR      | \
  45                          NETIF_MSG_TX_ERR       | NETIF_MSG_TX_DONE     | \
  46                          NETIF_MSG_PKTDATA      | NETIF_MSG_TX_QUEUED   | \
  47                          NETIF_MSG_RX_STATUS)
  48
  49 #define cpsw_info(priv, type, format, ...)              \
  50 do {                                                            \
  51         if (netif_msg_##type(priv) && net_ratelimit())          \
  52                 dev_info(priv->dev, format, ## __VA_ARGS__);    \
  53 } while (0)
  54
  55 #define cpsw_err(priv, type, format, ...)               \
  56 do {                                                            \
  57         if (netif_msg_##type(priv) && net_ratelimit())          \
  58                 dev_err(priv->dev, format, ## __VA_ARGS__);     \
  59 } while (0)
  60
  61 #define cpsw_dbg(priv, type, format, ...)               \
  62 do {                                                            \
  63         if (netif_msg_##type(priv) && net_ratelimit())          \
  64                 dev_dbg(priv->dev, format, ## __VA_ARGS__);     \
  65 } while (0)
  66
  67 #define cpsw_notice(priv, type, format, ...)            \
  68 do {                                                            \
  69         if (netif_msg_##type(priv) && net_ratelimit())          \
  70                 dev_notice(priv->dev, format, ## __VA_ARGS__);  \
  71 } while (0)
  72
  73 #define ALE_ALL_PORTS           0x7
  74
  75 #define CPSW_MAJOR_VERSION(reg)         (reg >> 8 & 0x7)
  76 #define CPSW_MINOR_VERSION(reg)         (reg & 0xff)
  77 #define CPSW_RTL_VERSION(reg)           ((reg >> 11) & 0x1f)
  78
  79 #define CPDMA_RXTHRESH          0x0c0
  80 #define CPDMA_RXFREE            0x0e0
  81 #define CPDMA_TXHDP             0x00
  82 #define CPDMA_RXHDP             0x20
  83 #define CPDMA_TXCP              0x40
  84 #define CPDMA_RXCP              0x60
  85
  86 #define cpsw_dma_regs(base, offset)             \
  87         (void __iomem *)((base) + (offset))
  88 #define cpsw_dma_rxthresh(base, offset)         \
  89         (void __iomem *)((base) + (offset) + CPDMA_RXTHRESH)
  90 #define cpsw_dma_rxfree(base, offset)           \
  91         (void __iomem *)((base) + (offset) + CPDMA_RXFREE)
  92 #define cpsw_dma_txhdp(base, offset)            \
  93         (void __iomem *)((base) + (offset) + CPDMA_TXHDP)
  94 #define cpsw_dma_rxhdp(base, offset)            \
  95         (void __iomem *)((base) + (offset) + CPDMA_RXHDP)
  96 #define cpsw_dma_txcp(base, offset)             \
  97         (void __iomem *)((base) + (offset) + CPDMA_TXCP)
  98 #define cpsw_dma_rxcp(base, offset)             \
  99         (void __iomem *)((base) + (offset) + CPDMA_RXCP)
 100
 101 #define CPSW_POLL_WEIGHT        64
 102 #define CPSW_MIN_PACKET_SIZE    60
 103 #define CPSW_MAX_PACKET_SIZE    (1500 + 14 + 4 + 4)
 104
 105 #define RX_PRIORITY_MAPPING     0x76543210
 106 #define TX_PRIORITY_MAPPING     0x33221100
 107 #define CPDMA_TX_PRIORITY_MAP   0x76543210
 108
 109 #define cpsw_enable_irq(priv)   \
 110         do {                    \
 111                 u32 i;          \
 112                 for (i = 0; i < priv->num_irqs; i++) \
 113                         enable_irq(priv->irqs_table[i]); \
 114         } while (0);
 115 #define cpsw_disable_irq(priv)  \
 116         do {                    \
 117                 u32 i;          \
 118                 for (i = 0; i < priv->num_irqs; i++) \
 119                         disable_irq_nosync(priv->irqs_table[i]); \
 120         } while (0);
 121
 122 static int debug_level;
 123 module_param(debug_level, int, 0);
 124 MODULE_PARM_DESC(debug_level, "cpsw debug level (NETIF_MSG bits)");
 125
 126 static int ale_ageout = 10;
 127 module_param(ale_ageout, int, 0);
 128 MODULE_PARM_DESC(ale_ageout, "cpsw ale ageout interval (seconds)");
 129
 130 static int rx_packet_max = CPSW_MAX_PACKET_SIZE;
 131 module_param(rx_packet_max, int, 0);
 132 MODULE_PARM_DESC(rx_packet_max, "maximum receive packet size (bytes)");
 133
 134 struct cpsw_wr_regs {
 135         u32     id_ver;
 136         u32     soft_reset;
 137         u32     control;
 138         u32     int_control;
 139         u32     rx_thresh_en;
 140         u32     rx_en;
 141         u32     tx_en;
 142         u32     misc_en;
 143 };
 144
 145 struct cpsw_ss_regs {
 146         u32     id_ver;
 147         u32     control;
 148         u32     soft_reset;
 149         u32     stat_port_en;
 150         u32     ptype;
 151         u32     soft_idle;
 152         u32     thru_rate;
 153         u32     gap_thresh;
 154         u32     tx_start_wds;
 155         u32     flow_control;
 156         u32     vlan_ltype;
 157         u32     ts_ltype;
 158         u32     dlr_ltype;
 159 };
 160
 161 struct cpsw_slave_regs {
 162         u32     max_blks;
 163         u32     blk_cnt;
 164         u32     flow_thresh;
 165         u32     port_vlan;
 166         u32     tx_pri_map;
 167         u32     ts_ctl;
 168         u32     ts_seq_ltype;
 169         u32     ts_vlan;
 170         u32     sa_lo;
 171         u32     sa_hi;
 172 };
 173
 174 struct cpsw_host_regs {
 175         u32     max_blks;
 176         u32     blk_cnt;
 177         u32     flow_thresh;
 178         u32     port_vlan;
 179         u32     tx_pri_map;
 180         u32     cpdma_tx_pri_map;
 181         u32     cpdma_rx_chan_map;
 182 };
 183
 184 struct cpsw_sliver_regs {
 185         u32     id_ver;
 186         u32     mac_control;
 187         u32     mac_status;
 188         u32     soft_reset;
 189         u32     rx_maxlen;
 190         u32     __reserved_0;
 191         u32     rx_pause;
 192         u32     tx_pause;
 193         u32     __reserved_1;
 194         u32     rx_pri_map;
 195 };
 196
 197 struct cpsw_slave {
 198         struct cpsw_slave_regs __iomem  *regs;
 199         struct cpsw_sliver_regs __iomem *sliver;
 200         int                             slave_num;
 201         u32                             mac_control;
 202         struct cpsw_slave_data          *data;
 203         struct phy_device               *phy;
 204 };
 205
 206 struct cpsw_priv {
 207         spinlock_t                      lock;
 208         struct platform_device          *pdev;
 209         struct net_device               *ndev;
 210         struct resource                 *cpsw_res;
 211         struct resource                 *cpsw_ss_res;
 212         struct napi_struct              napi;
 213         struct device                   *dev;
 214         struct cpsw_platform_data       data;
 215         struct cpsw_ss_regs __iomem     *regs;
 216         struct cpsw_wr_regs __iomem     *wr_regs;
 217         struct cpsw_host_regs __iomem   *host_port_regs;
 218         u32                             msg_enable;
 219         struct net_device_stats         stats;
 220         int                             rx_packet_max;
 221         int                             host_port;
 222         struct clk                      *clk;
 223         u8                              mac_addr[ETH_ALEN];
 224         struct cpsw_slave               *slaves;
 225         struct cpdma_ctlr               *dma;
 226         struct cpdma_chan               *txch, *rxch;
 227         struct cpsw_ale                 *ale;
 228         /* snapshot of IRQ numbers */
 229         u32 irqs_table[4];
 230         u32 num_irqs;
 231 };
 232
 233 #define napi_to_priv(napi)      container_of(napi, struct cpsw_priv, napi)
 234 #define for_each_slave(priv, func, arg...)                      \
 235         do {                                                    \
 236                 int idx;                                        \
 237                 for (idx = 0; idx < (priv)->data.slaves; idx++) \
 238                         (func)((priv)->slaves + idx, ##arg);    \
 239         } while (0)
 240
 241 static void cpsw_ndo_set_rx_mode(struct net_device *ndev)
 242 {
 243         struct cpsw_priv *priv = netdev_priv(ndev);
 244
 245         if (ndev->flags & IFF_PROMISC) {
 246                 /* Enable promiscuous mode */
 247                 dev_err(priv->dev, "Ignoring Promiscuous mode\n");
 248                 return;
 249         }
 250
 251         /* Clear all mcast from ALE */
 252         cpsw_ale_flush_multicast(priv->ale, ALE_ALL_PORTS << priv->host_port);
 253
 254         if (!netdev_mc_empty(ndev)) {
 255                 struct netdev_hw_addr *ha;
 256
 257                 /* program multicast address list into ALE register */
 258                 netdev_for_each_mc_addr(ha, ndev) {
 259                         cpsw_ale_add_mcast(priv->ale, (u8 *)ha->addr,
 260                                 ALE_ALL_PORTS << priv->host_port, 0, 0);
 261                 }
 262         }
 263 }
 264
 265 static void cpsw_intr_enable(struct cpsw_priv *priv)
 266 {
 267         __raw_writel(0xFF, &priv->wr_regs->tx_en);
 268         __raw_writel(0xFF, &priv->wr_regs->rx_en);
 269
 270         cpdma_ctlr_int_ctrl(priv->dma, true);
 271         return;
 272 }
 273
 274 static void cpsw_intr_disable(struct cpsw_priv *priv)
 275 {
 276         __raw_writel(0, &priv->wr_regs->tx_en);
 277         __raw_writel(0, &priv->wr_regs->rx_en);
 278
 279         cpdma_ctlr_int_ctrl(priv->dma, false);
 280         return;
 281 }
 282
 283 void cpsw_tx_handler(void *token, int len, int status)
 284 {
 285         struct sk_buff          *skb = token;
 286         struct net_device       *ndev = skb->dev;
 287         struct cpsw_priv        *priv = netdev_priv(ndev);
 288
 289         if (unlikely(netif_queue_stopped(ndev)))
 290                 netif_start_queue(ndev);
 291         priv->stats.tx_packets++;
 292         priv->stats.tx_bytes += len;
 293         dev_kfree_skb_any(skb);
 294 }
 295
 296 void cpsw_rx_handler(void *token, int len, int status)
 297 {
 298         struct sk_buff          *skb = token;
 299         struct net_device       *ndev = skb->dev;
 300         struct cpsw_priv        *priv = netdev_priv(ndev);
 301         int                     ret = 0;
 302
 303         /* free and bail if we are shutting down */
 304         if (unlikely(!netif_running(ndev)) ||
 305                         unlikely(!netif_carrier_ok(ndev))) {
 306                 dev_kfree_skb_any(skb);
 307                 return;
 308         }
 309         if (likely(status >= 0)) {
 310                 skb_put(skb, len);
 311                 skb->protocol = eth_type_trans(skb, ndev);
 312                 netif_receive_skb(skb);
 313                 priv->stats.rx_bytes += len;
 314                 priv->stats.rx_packets++;
 315                 skb = NULL;
 316         }
 317
 318         if (unlikely(!netif_running(ndev))) {
 319                 if (skb)
 320                         dev_kfree_skb_any(skb);
 321                 return;
 322         }
 323
 324         if (likely(!skb)) {
 325                 skb = netdev_alloc_skb_ip_align(ndev, priv->rx_packet_max);
 326                 if (WARN_ON(!skb))
 327                         return;
 328
 329                 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
 330                                         skb_tailroom(skb), GFP_KERNEL);
 331         }
 332         WARN_ON(ret < 0);
 333 }
 334
 335 static irqreturn_t cpsw_interrupt(int irq, void *dev_id)
 336 {
 337         struct cpsw_priv *priv = dev_id;
 338
 339         if (likely(netif_running(priv->ndev))) {
 340                 cpsw_intr_disable(priv);
 341                 cpsw_disable_irq(priv);
 342                 napi_schedule(&priv->napi);
 343         }
 344         return IRQ_HANDLED;
 345 }
 346
 347 static inline int cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
 348 {
 349         if (priv->host_port == 0)
 350                 return slave_num + 1;
 351         else
 352                 return slave_num;
 353 }
 354
 355 static int cpsw_poll(struct napi_struct *napi, int budget)
 356 {
 357         struct cpsw_priv        *priv = napi_to_priv(napi);
 358         int                     num_tx, num_rx;
 359
 360         num_tx = cpdma_chan_process(priv->txch, 128);
 361         num_rx = cpdma_chan_process(priv->rxch, budget);
 362
 363         if (num_rx || num_tx)
 364                 cpsw_dbg(priv, intr, "poll %d rx, %d tx pkts\n",
 365                          num_rx, num_tx);
 366
 367         if (num_rx < budget) {
 368                 napi_complete(napi);
 369                 cpsw_intr_enable(priv);
 370                 cpdma_ctlr_eoi(priv->dma);
 371                 cpsw_enable_irq(priv);
 372         }
 373
 374         return num_rx;
 375 }
 376
 377 static inline void soft_reset(const char *module, void __iomem *reg)
 378 {
 379         unsigned long timeout = jiffies + HZ;
 380
 381         __raw_writel(1, reg);
 382         do {
 383                 cpu_relax();
 384         } while ((__raw_readl(reg) & 1) && time_after(timeout, jiffies));
 385
 386         WARN(__raw_readl(reg) & 1, "failed to soft-reset %s\n", module);
 387 }
 388
 389 #define mac_hi(mac)     (((mac)[0] << 0) | ((mac)[1] << 8) |    \
 390                          ((mac)[2] << 16) | ((mac)[3] << 24))
 391 #define mac_lo(mac)     (((mac)[4] << 0) | ((mac)[5] << 8))
 392
 393 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
 394                                struct cpsw_priv *priv)
 395 {
 396         __raw_writel(mac_hi(priv->mac_addr), &slave->regs->sa_hi);
 397         __raw_writel(mac_lo(priv->mac_addr), &slave->regs->sa_lo);
 398 }
 399
 400 static void _cpsw_adjust_link(struct cpsw_slave *slave,
 401                               struct cpsw_priv *priv, bool *link)
 402 {
 403         struct phy_device       *phy = slave->phy;
 404         u32                     mac_control = 0;
 405         u32                     slave_port;
 406
 407         if (!phy)
 408                 return;
 409
 410         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
 411
 412         if (phy->link) {
 413                 mac_control = priv->data.mac_control;
 414
 415                 /* enable forwarding */
 416                 cpsw_ale_control_set(priv->ale, slave_port,
 417                                      ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 418
 419                 if (phy->speed == 1000)
 420                         mac_control |= BIT(7);  /* GIGABITEN    */
 421                 if (phy->duplex)
 422                         mac_control |= BIT(0);  /* FULLDUPLEXEN */
 423
 424                 /* set speed_in input in case RMII mode is used in 100Mbps */
 425                 if (phy->speed == 100)
 426                         mac_control |= BIT(15);
 427
 428                 *link = true;
 429         } else {
 430                 mac_control = 0;
 431                 /* disable forwarding */
 432                 cpsw_ale_control_set(priv->ale, slave_port,
 433                                      ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
 434         }
 435
 436         if (mac_control != slave->mac_control) {
 437                 phy_print_status(phy);
 438                 __raw_writel(mac_control, &slave->sliver->mac_control);
 439         }
 440
 441         slave->mac_control = mac_control;
 442 }
 443
 444 static void cpsw_adjust_link(struct net_device *ndev)
 445 {
 446         struct cpsw_priv        *priv = netdev_priv(ndev);
 447         bool                    link = false;
 448
 449         for_each_slave(priv, _cpsw_adjust_link, priv, &link);
 450
 451         if (link) {
 452                 netif_carrier_on(ndev);
 453                 if (netif_running(ndev))
 454                         netif_wake_queue(ndev);
 455         } else {
 456                 netif_carrier_off(ndev);
 457                 netif_stop_queue(ndev);
 458         }
 459 }
 460
 461 static inline int __show_stat(char *buf, int maxlen, const char *name, u32 val)
 462 {
 463         static char *leader = "........................................";
 464
 465         if (!val)
 466                 return 0;
 467         else
 468                 return snprintf(buf, maxlen, "%s %s %10d\n", name,
 469                                 leader + strlen(name), val);
 470 }
 471
 472 static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 473 {
 474         char name[32];
 475         u32 slave_port;
 476
 477         sprintf(name, "slave-%d", slave->slave_num);
 478
 479         soft_reset(name, &slave->sliver->soft_reset);
 480
 481         /* setup priority mapping */
 482         __raw_writel(RX_PRIORITY_MAPPING, &slave->sliver->rx_pri_map);
 483         __raw_writel(TX_PRIORITY_MAPPING, &slave->regs->tx_pri_map);
 484
 485         /* setup max packet size, and mac address */
 486         __raw_writel(priv->rx_packet_max, &slave->sliver->rx_maxlen);
 487         cpsw_set_slave_mac(slave, priv);
 488
 489         slave->mac_control = 0; /* no link yet */
 490
 491         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
 492
 493         cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
 494                            1 << slave_port, 0, ALE_MCAST_FWD_2);
 495
 496         slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
 497                                  &cpsw_adjust_link, 0, slave->data->phy_if);
 498         if (IS_ERR(slave->phy)) {
 499                 dev_err(priv->dev, "phy %s not found on slave %d\n",
 500                         slave->data->phy_id, slave->slave_num);
 501                 slave->phy = NULL;
 502         } else {
 503                 dev_info(priv->dev, "phy found : id is : 0x%x\n",
 504                          slave->phy->phy_id);
 505                 phy_start(slave->phy);
 506         }
 507 }
 508
 509 static void cpsw_init_host_port(struct cpsw_priv *priv)
 510 {
 511         /* soft reset the controller and initialize ale */
 512         soft_reset("cpsw", &priv->regs->soft_reset);
 513         cpsw_ale_start(priv->ale);
 514
 515         /* switch to vlan unaware mode */
 516         cpsw_ale_control_set(priv->ale, 0, ALE_VLAN_AWARE, 0);
 517
 518         /* setup host port priority mapping */
 519         __raw_writel(CPDMA_TX_PRIORITY_MAP,
 520                      &priv->host_port_regs->cpdma_tx_pri_map);
 521         __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
 522
 523         cpsw_ale_control_set(priv->ale, priv->host_port,
 524                              ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
 525
 526         cpsw_ale_add_ucast(priv->ale, priv->mac_addr, priv->host_port, 0);
 527         cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
 528                            1 << priv->host_port, 0, ALE_MCAST_FWD_2);
 529 }
 530
 531 static int cpsw_ndo_open(struct net_device *ndev)
 532 {
 533         struct cpsw_priv *priv = netdev_priv(ndev);
 534         int i, ret;
 535         u32 reg;
 536
 537         cpsw_intr_disable(priv);
 538         netif_carrier_off(ndev);
 539
 540         pm_runtime_get_sync(&priv->pdev->dev);
 541
 542         reg = __raw_readl(&priv->regs->id_ver);
 543
 544         dev_info(priv->dev, "initializing cpsw version %d.%d (%d)\n",
 545                  CPSW_MAJOR_VERSION(reg), CPSW_MINOR_VERSION(reg),
 546                  CPSW_RTL_VERSION(reg));
 547
 548         /* initialize host and slave ports */
 549         cpsw_init_host_port(priv);
 550         for_each_slave(priv, cpsw_slave_open, priv);
 551
 552         /* setup tx dma to fixed prio and zero offset */
 553         cpdma_control_set(priv->dma, CPDMA_TX_PRIO_FIXED, 1);
 554         cpdma_control_set(priv->dma, CPDMA_RX_BUFFER_OFFSET, 0);
 555
 556         /* disable priority elevation and enable statistics on all ports */
 557         __raw_writel(0, &priv->regs->ptype);
 558
 559         /* enable statistics collection only on the host port */
 560         __raw_writel(0x7, &priv->regs->stat_port_en);
 561
 562         if (WARN_ON(!priv->data.rx_descs))
 563                 priv->data.rx_descs = 128;
 564
 565         for (i = 0; i < priv->data.rx_descs; i++) {
 566                 struct sk_buff *skb;
 567
 568                 ret = -ENOMEM;
 569                 skb = netdev_alloc_skb_ip_align(priv->ndev,
 570                                                 priv->rx_packet_max);
 571                 if (!skb)
 572                         break;
 573                 ret = cpdma_chan_submit(priv->rxch, skb, skb->data,
 574                                         skb_tailroom(skb), GFP_KERNEL);
 575                 if (WARN_ON(ret < 0))
 576                         break;
 577         }
 578         /* continue even if we didn't manage to submit all receive descs */
 579         cpsw_info(priv, ifup, "submitted %d rx descriptors\n", i);
 580
 581         cpdma_ctlr_start(priv->dma);
 582         cpsw_intr_enable(priv);
 583         napi_enable(&priv->napi);
 584         cpdma_ctlr_eoi(priv->dma);
 585
 586         return 0;
 587 }
 588
 589 static void cpsw_slave_stop(struct cpsw_slave *slave, struct cpsw_priv *priv)
 590 {
 591         if (!slave->phy)
 592                 return;
 593         phy_stop(slave->phy);
 594         phy_disconnect(slave->phy);
 595         slave->phy = NULL;
 596 }
 597
 598 static int cpsw_ndo_stop(struct net_device *ndev)
 599 {
 600         struct cpsw_priv *priv = netdev_priv(ndev);
 601
 602         cpsw_info(priv, ifdown, "shutting down cpsw device\n");
 603         cpsw_intr_disable(priv);
 604         cpdma_ctlr_int_ctrl(priv->dma, false);
 605         cpdma_ctlr_stop(priv->dma);
 606         netif_stop_queue(priv->ndev);
 607         napi_disable(&priv->napi);
 608         netif_carrier_off(priv->ndev);
 609         cpsw_ale_stop(priv->ale);
 610         for_each_slave(priv, cpsw_slave_stop, priv);
 611         pm_runtime_put_sync(&priv->pdev->dev);
 612         return 0;
 613 }
 614
 615 static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
 616                                        struct net_device *ndev)
 617 {
 618         struct cpsw_priv *priv = netdev_priv(ndev);
 619         int ret;
 620
 621         ndev->trans_start = jiffies;
 622
 623         if (skb_padto(skb, CPSW_MIN_PACKET_SIZE)) {
 624                 cpsw_err(priv, tx_err, "packet pad failed\n");
 625                 priv->stats.tx_dropped++;
 626                 return NETDEV_TX_OK;
 627         }
 628
 629         ret = cpdma_chan_submit(priv->txch, skb, skb->data,
 630                                 skb->len, GFP_KERNEL);
 631         if (unlikely(ret != 0)) {
 632                 cpsw_err(priv, tx_err, "desc submit failed\n");
 633                 goto fail;
 634         }
 635
 636         return NETDEV_TX_OK;
 637 fail:
 638         priv->stats.tx_dropped++;
 639         netif_stop_queue(ndev);
 640         return NETDEV_TX_BUSY;
 641 }
 642
 643 static void cpsw_ndo_change_rx_flags(struct net_device *ndev, int flags)
 644 {
 645         /*
 646          * The switch cannot operate in promiscuous mode without substantial
 647          * headache.  For promiscuous mode to work, we would need to put the
 648          * ALE in bypass mode and route all traffic to the host port.
 649          * Subsequently, the host will need to operate as a "bridge", learn,
 650          * and flood as needed.  For now, we simply complain here and
 651          * do nothing about it :-)
 652          */
 653         if ((flags & IFF_PROMISC) && (ndev->flags & IFF_PROMISC))
 654                 dev_err(&ndev->dev, "promiscuity ignored!\n");
 655
 656         /*
 657          * The switch cannot filter multicast traffic unless it is configured
 658          * in "VLAN Aware" mode.  Unfortunately, VLAN awareness requires a
 659          * whole bunch of additional logic that this driver does not implement
 660          * at present.
 661          */
 662         if ((flags & IFF_ALLMULTI) && !(ndev->flags & IFF_ALLMULTI))
 663                 dev_err(&ndev->dev, "multicast traffic cannot be filtered!\n");
 664 }
 665
 666 static void cpsw_ndo_tx_timeout(struct net_device *ndev)
 667 {
 668         struct cpsw_priv *priv = netdev_priv(ndev);
 669
 670         cpsw_err(priv, tx_err, "transmit timeout, restarting dma\n");
 671         priv->stats.tx_errors++;
 672         cpsw_intr_disable(priv);
 673         cpdma_ctlr_int_ctrl(priv->dma, false);
 674         cpdma_chan_stop(priv->txch);
 675         cpdma_chan_start(priv->txch);
 676         cpdma_ctlr_int_ctrl(priv->dma, true);
 677         cpsw_intr_enable(priv);
 678         cpdma_ctlr_eoi(priv->dma);
 679 }
 680
 681 static struct net_device_stats *cpsw_ndo_get_stats(struct net_device *ndev)
 682 {
 683         struct cpsw_priv *priv = netdev_priv(ndev);
 684         return &priv->stats;
 685 }
 686
 687 #ifdef CONFIG_NET_POLL_CONTROLLER
 688 static void cpsw_ndo_poll_controller(struct net_device *ndev)
 689 {
 690         struct cpsw_priv *priv = netdev_priv(ndev);
 691
 692         cpsw_intr_disable(priv);
 693         cpdma_ctlr_int_ctrl(priv->dma, false);
 694         cpsw_interrupt(ndev->irq, priv);
 695         cpdma_ctlr_int_ctrl(priv->dma, true);
 696         cpsw_intr_enable(priv);
 697         cpdma_ctlr_eoi(priv->dma);
 698 }
 699 #endif
 700
 701 static const struct net_device_ops cpsw_netdev_ops = {
 702         .ndo_open               = cpsw_ndo_open,
 703         .ndo_stop               = cpsw_ndo_stop,
 704         .ndo_start_xmit         = cpsw_ndo_start_xmit,
 705         .ndo_change_rx_flags    = cpsw_ndo_change_rx_flags,
 706         .ndo_validate_addr      = eth_validate_addr,
 707         .ndo_change_mtu         = eth_change_mtu,
 708         .ndo_tx_timeout         = cpsw_ndo_tx_timeout,
 709         .ndo_get_stats          = cpsw_ndo_get_stats,
 710         .ndo_set_rx_mode        = cpsw_ndo_set_rx_mode,
 711 #ifdef CONFIG_NET_POLL_CONTROLLER
 712         .ndo_poll_controller    = cpsw_ndo_poll_controller,
 713 #endif
 714 };
 715
 716 static void cpsw_get_drvinfo(struct net_device *ndev,
 717                              struct ethtool_drvinfo *info)
 718 {
 719         struct cpsw_priv *priv = netdev_priv(ndev);
 720         strcpy(info->driver, "TI CPSW Driver v1.0");
 721         strcpy(info->version, "1.0");
 722         strcpy(info->bus_info, priv->pdev->name);
 723 }
 724
 725 static u32 cpsw_get_msglevel(struct net_device *ndev)
 726 {
 727         struct cpsw_priv *priv = netdev_priv(ndev);
 728         return priv->msg_enable;
 729 }
 730
 731 static void cpsw_set_msglevel(struct net_device *ndev, u32 value)
 732 {
 733         struct cpsw_priv *priv = netdev_priv(ndev);
 734         priv->msg_enable = value;
 735 }
 736
 737 static const struct ethtool_ops cpsw_ethtool_ops = {
 738         .get_drvinfo    = cpsw_get_drvinfo,
 739         .get_msglevel   = cpsw_get_msglevel,
 740         .set_msglevel   = cpsw_set_msglevel,
 741         .get_link       = ethtool_op_get_link,
 742 };
 743
 744 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv)
 745 {
 746         void __iomem            *regs = priv->regs;
 747         int                     slave_num = slave->slave_num;
 748         struct cpsw_slave_data  *data = priv->data.slave_data + slave_num;
 749
 750         slave->data     = data;
 751         slave->regs     = regs + data->slave_reg_ofs;
 752         slave->sliver   = regs + data->sliver_reg_ofs;
 753 }
 754
 755 static int cpsw_probe_dt(struct cpsw_platform_data *data,
 756                          struct platform_device *pdev)
 757 {
 758         struct device_node *node = pdev->dev.of_node;
 759         struct device_node *slave_node;
 760         int i = 0, ret;
 761         u32 prop;
 762
 763         if (!node)
 764                 return -EINVAL;
 765
 766         if (of_property_read_u32(node, "slaves", &prop)) {
 767                 pr_err("Missing slaves property in the DT.\n");
 768                 return -EINVAL;
 769         }
 770         data->slaves = prop;
 771
 772         data->slave_data = kzalloc(sizeof(struct cpsw_slave_data) *
 773                                    data->slaves, GFP_KERNEL);
 774         if (!data->slave_data) {
 775                 pr_err("Could not allocate slave memory.\n");
 776                 return -EINVAL;
 777         }
 778
 779         data->no_bd_ram = of_property_read_bool(node, "no_bd_ram");
 780
 781         if (of_property_read_u32(node, "cpdma_channels", &prop)) {
 782                 pr_err("Missing cpdma_channels property in the DT.\n");
 783                 ret = -EINVAL;
 784                 goto error_ret;
 785         }
 786         data->channels = prop;
 787
 788         if (of_property_read_u32(node, "host_port_no", &prop)) {
 789                 pr_err("Missing host_port_no property in the DT.\n");
 790                 ret = -EINVAL;
 791                 goto error_ret;
 792         }
 793         data->host_port_num = prop;
 794
 795         if (of_property_read_u32(node, "cpdma_reg_ofs", &prop)) {
 796                 pr_err("Missing cpdma_reg_ofs property in the DT.\n");
 797                 ret = -EINVAL;
 798                 goto error_ret;
 799         }
 800         data->cpdma_reg_ofs = prop;
 801
 802         if (of_property_read_u32(node, "cpdma_sram_ofs", &prop)) {
 803                 pr_err("Missing cpdma_sram_ofs property in the DT.\n");
 804                 ret = -EINVAL;
 805                 goto error_ret;
 806         }
 807         data->cpdma_sram_ofs = prop;
 808
 809         if (of_property_read_u32(node, "ale_reg_ofs", &prop)) {
 810                 pr_err("Missing ale_reg_ofs property in the DT.\n");
 811                 ret = -EINVAL;
 812                 goto error_ret;
 813         }
 814         data->ale_reg_ofs = prop;
 815
 816         if (of_property_read_u32(node, "ale_entries", &prop)) {
 817                 pr_err("Missing ale_entries property in the DT.\n");
 818                 ret = -EINVAL;
 819                 goto error_ret;
 820         }
 821         data->ale_entries = prop;
 822
 823         if (of_property_read_u32(node, "host_port_reg_ofs", &prop)) {
 824                 pr_err("Missing host_port_reg_ofs property in the DT.\n");
 825                 ret = -EINVAL;
 826                 goto error_ret;
 827         }
 828         data->host_port_reg_ofs = prop;
 829
 830         if (of_property_read_u32(node, "hw_stats_reg_ofs", &prop)) {
 831                 pr_err("Missing hw_stats_reg_ofs property in the DT.\n");
 832                 ret = -EINVAL;
 833                 goto error_ret;
 834         }
 835         data->hw_stats_reg_ofs = prop;
 836
 837         if (of_property_read_u32(node, "bd_ram_ofs", &prop)) {
 838                 pr_err("Missing bd_ram_ofs property in the DT.\n");
 839                 ret = -EINVAL;
 840                 goto error_ret;
 841         }
 842         data->bd_ram_ofs = prop;
 843
 844         if (of_property_read_u32(node, "bd_ram_size", &prop)) {
 845                 pr_err("Missing bd_ram_size property in the DT.\n");
 846                 ret = -EINVAL;
 847                 goto error_ret;
 848         }
 849         data->bd_ram_size = prop;
 850
 851         if (of_property_read_u32(node, "rx_descs", &prop)) {
 852                 pr_err("Missing rx_descs property in the DT.\n");
 853                 ret = -EINVAL;
 854                 goto error_ret;
 855         }
 856         data->rx_descs = prop;
 857
 858         if (of_property_read_u32(node, "mac_control", &prop)) {
 859                 pr_err("Missing mac_control property in the DT.\n");
 860                 ret = -EINVAL;
 861                 goto error_ret;
 862         }
 863         data->mac_control = prop;
 864
 865         for_each_child_of_node(node, slave_node) {
 866                 struct cpsw_slave_data *slave_data = data->slave_data + i;
 867                 const char *phy_id = NULL;
 868                 const void *mac_addr = NULL;
 869
 870                 if (of_property_read_string(slave_node, "phy_id", &phy_id)) {
 871                         pr_err("Missing slave[%d] phy_id property\n", i);
 872                         ret = -EINVAL;
 873                         goto error_ret;
 874                 }
 875                 slave_data->phy_id = phy_id;
 876
 877                 if (of_property_read_u32(slave_node, "slave_reg_ofs", &prop)) {
 878                         pr_err("Missing slave[%d] slave_reg_ofs property\n", i);
 879                         ret = -EINVAL;
 880                         goto error_ret;
 881                 }
 882                 slave_data->slave_reg_ofs = prop;
 883
 884                 if (of_property_read_u32(slave_node, "sliver_reg_ofs",
 885                                          &prop)) {
 886                         pr_err("Missing slave[%d] sliver_reg_ofs property\n",
 887                                 i);
 888                         ret = -EINVAL;
 889                         goto error_ret;
 890                 }
 891                 slave_data->sliver_reg_ofs = prop;
 892
 893                 mac_addr = of_get_mac_address(slave_node);
 894                 if (mac_addr)
 895                         memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN);
 896
 897                 i++;
 898         }
 899
 900         return 0;
 901
 902 error_ret:
 903         kfree(data->slave_data);
 904         return ret;
 905 }
 906
 907 static int __devinit cpsw_probe(struct platform_device *pdev)
 908 {
 909         struct cpsw_platform_data       *data = pdev->dev.platform_data;
 910         struct net_device               *ndev;
 911         struct cpsw_priv                *priv;
 912         struct cpdma_params             dma_params;
 913         struct cpsw_ale_params          ale_params;
 914         void __iomem                    *regs;
 915         struct resource                 *res;
 916         int ret = 0, i, k = 0;
 917
 918         ndev = alloc_etherdev(sizeof(struct cpsw_priv));
 919         if (!ndev) {
 920                 pr_err("error allocating net_device\n");
 921                 return -ENOMEM;
 922         }
 923
 924         platform_set_drvdata(pdev, ndev);
 925         priv = netdev_priv(ndev);
 926         spin_lock_init(&priv->lock);
 927         priv->pdev = pdev;
 928         priv->ndev = ndev;
 929         priv->dev  = &ndev->dev;
 930         priv->msg_enable = netif_msg_init(debug_level, CPSW_DEBUG);
 931         priv->rx_packet_max = max(rx_packet_max, 128);
 932
 933         if (cpsw_probe_dt(&priv->data, pdev)) {
 934                 pr_err("cpsw: platform data missing\n");
 935                 ret = -ENODEV;
 936                 goto clean_ndev_ret;
 937         }
 938         data = &priv->data;
 939
 940         if (is_valid_ether_addr(data->slave_data[0].mac_addr)) {
 941                 memcpy(priv->mac_addr, data->slave_data[0].mac_addr, ETH_ALEN);
 942                 pr_info("Detected MACID = %pM", priv->mac_addr);
 943         } else {
 944                 eth_random_addr(priv->mac_addr);
 945                 pr_info("Random MACID = %pM", priv->mac_addr);
 946         }
 947
 948         memcpy(ndev->dev_addr, priv->mac_addr, ETH_ALEN);
 949
 950         priv->slaves = kzalloc(sizeof(struct cpsw_slave) * data->slaves,
 951                                GFP_KERNEL);
 952         if (!priv->slaves) {
 953                 ret = -EBUSY;
 954                 goto clean_ndev_ret;
 955         }
 956         for (i = 0; i < data->slaves; i++)
 957                 priv->slaves[i].slave_num = i;
 958
 959         pm_runtime_enable(&pdev->dev);
 960         priv->clk = clk_get(&pdev->dev, "fck");
 961         if (IS_ERR(priv->clk)) {
 962                 dev_err(&pdev->dev, "fck is not found\n");
 963                 ret = -ENODEV;
 964                 goto clean_slave_ret;
 965         }
 966
 967         priv->cpsw_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 968         if (!priv->cpsw_res) {
 969                 dev_err(priv->dev, "error getting i/o resource\n");
 970                 ret = -ENOENT;
 971                 goto clean_clk_ret;
 972         }
 973
 974         if (!request_mem_region(priv->cpsw_res->start,
 975                                 resource_size(priv->cpsw_res), ndev->name)) {
 976                 dev_err(priv->dev, "failed request i/o region\n");
 977                 ret = -ENXIO;
 978                 goto clean_clk_ret;
 979         }
 980
 981         regs = ioremap(priv->cpsw_res->start, resource_size(priv->cpsw_res));
 982         if (!regs) {
 983                 dev_err(priv->dev, "unable to map i/o region\n");
 984                 goto clean_cpsw_iores_ret;
 985         }
 986         priv->regs = regs;
 987         priv->host_port = data->host_port_num;
 988         priv->host_port_regs = regs + data->host_port_reg_ofs;
 989
 990         priv->cpsw_ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 991         if (!priv->cpsw_ss_res) {
 992                 dev_err(priv->dev, "error getting i/o resource\n");
 993                 ret = -ENOENT;
 994                 goto clean_clk_ret;
 995         }
 996
 997         if (!request_mem_region(priv->cpsw_ss_res->start,
 998                         resource_size(priv->cpsw_ss_res), ndev->name)) {
 999                 dev_err(priv->dev, "failed request i/o region\n");
1000                 ret = -ENXIO;
1001                 goto clean_clk_ret;
1002         }
1003
1004         regs = ioremap(priv->cpsw_ss_res->start,
1005                                 resource_size(priv->cpsw_ss_res));
1006         if (!regs) {
1007                 dev_err(priv->dev, "unable to map i/o region\n");
1008                 goto clean_cpsw_ss_iores_ret;
1009         }
1010         priv->wr_regs = regs;
1011
1012         for_each_slave(priv, cpsw_slave_init, priv);
1013
1014         memset(&dma_params, 0, sizeof(dma_params));
1015         dma_params.dev          = &pdev->dev;
1016         dma_params.dmaregs      = cpsw_dma_regs((u32)priv->regs,
1017                                                 data->cpdma_reg_ofs);
1018         dma_params.rxthresh     = cpsw_dma_rxthresh((u32)priv->regs,
1019                                                     data->cpdma_reg_ofs);
1020         dma_params.rxfree       = cpsw_dma_rxfree((u32)priv->regs,
1021                                                   data->cpdma_reg_ofs);
1022         dma_params.txhdp        = cpsw_dma_txhdp((u32)priv->regs,
1023                                                  data->cpdma_sram_ofs);
1024         dma_params.rxhdp        = cpsw_dma_rxhdp((u32)priv->regs,
1025                                                  data->cpdma_sram_ofs);
1026         dma_params.txcp         = cpsw_dma_txcp((u32)priv->regs,
1027                                                 data->cpdma_sram_ofs);
1028         dma_params.rxcp         = cpsw_dma_rxcp((u32)priv->regs,
1029                                                 data->cpdma_sram_ofs);
1030
1031         dma_params.num_chan             = data->channels;
1032         dma_params.has_soft_reset       = true;
1033         dma_params.min_packet_size      = CPSW_MIN_PACKET_SIZE;
1034         dma_params.desc_mem_size        = data->bd_ram_size;
1035         dma_params.desc_align           = 16;
1036         dma_params.has_ext_regs         = true;
1037         dma_params.desc_mem_phys        = data->no_bd_ram ? 0 :
1038                         (u32 __force)priv->cpsw_res->start + data->bd_ram_ofs;
1039         dma_params.desc_hw_addr         = data->hw_ram_addr ?
1040                         data->hw_ram_addr : dma_params.desc_mem_phys ;
1041
1042         priv->dma = cpdma_ctlr_create(&dma_params);
1043         if (!priv->dma) {
1044                 dev_err(priv->dev, "error initializing dma\n");
1045                 ret = -ENOMEM;
1046                 goto clean_iomap_ret;
1047         }
1048
1049         priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
1050                                        cpsw_tx_handler);
1051         priv->rxch = cpdma_chan_create(priv->dma, rx_chan_num(0),
1052                                        cpsw_rx_handler);
1053
1054         if (WARN_ON(!priv->txch || !priv->rxch)) {
1055                 dev_err(priv->dev, "error initializing dma channels\n");
1056                 ret = -ENOMEM;
1057                 goto clean_dma_ret;
1058         }
1059
1060         memset(&ale_params, 0, sizeof(ale_params));
1061         ale_params.dev                  = &ndev->dev;
1062         ale_params.ale_regs             = (void *)((u32)priv->regs) +
1063                                                 ((u32)data->ale_reg_ofs);
1064         ale_params.ale_ageout           = ale_ageout;
1065         ale_params.ale_entries          = data->ale_entries;
1066         ale_params.ale_ports            = data->slaves;
1067
1068         priv->ale = cpsw_ale_create(&ale_params);
1069         if (!priv->ale) {
1070                 dev_err(priv->dev, "error initializing ale engine\n");
1071                 ret = -ENODEV;
1072                 goto clean_dma_ret;
1073         }
1074
1075         ndev->irq = platform_get_irq(pdev, 0);
1076         if (ndev->irq < 0) {
1077                 dev_err(priv->dev, "error getting irq resource\n");
1078                 ret = -ENOENT;
1079                 goto clean_ale_ret;
1080         }
1081
1082         while ((res = platform_get_resource(priv->pdev, IORESOURCE_IRQ, k))) {
1083                 for (i = res->start; i <= res->end; i++) {
1084                         if (request_irq(i, cpsw_interrupt, IRQF_DISABLED,
1085                                         dev_name(&pdev->dev), priv)) {
1086                                 dev_err(priv->dev, "error attaching irq\n");
1087                                 goto clean_ale_ret;
1088                         }
1089                         priv->irqs_table[k] = i;
1090                         priv->num_irqs = k;
1091                 }
1092                 k++;
1093         }
1094
1095         ndev->flags |= IFF_ALLMULTI;    /* see cpsw_ndo_change_rx_flags() */
1096
1097         ndev->netdev_ops = &cpsw_netdev_ops;
1098         SET_ETHTOOL_OPS(ndev, &cpsw_ethtool_ops);
1099         netif_napi_add(ndev, &priv->napi, cpsw_poll, CPSW_POLL_WEIGHT);
1100
1101         /* register the network device */
1102         SET_NETDEV_DEV(ndev, &pdev->dev);
1103         ret = register_netdev(ndev);
1104         if (ret) {
1105                 dev_err(priv->dev, "error registering net device\n");
1106                 ret = -ENODEV;
1107                 goto clean_irq_ret;
1108         }
1109
1110         cpsw_notice(priv, probe, "initialized device (regs %x, irq %d)\n",
1111                   priv->cpsw_res->start, ndev->irq);
1112
1113         return 0;
1114
1115 clean_irq_ret:
1116         free_irq(ndev->irq, priv);
1117 clean_ale_ret:
1118         cpsw_ale_destroy(priv->ale);
1119 clean_dma_ret:
1120         cpdma_chan_destroy(priv->txch);
1121         cpdma_chan_destroy(priv->rxch);
1122         cpdma_ctlr_destroy(priv->dma);
1123 clean_iomap_ret:
1124         iounmap(priv->regs);
1125 clean_cpsw_ss_iores_ret:
1126         release_mem_region(priv->cpsw_ss_res->start,
1127                            resource_size(priv->cpsw_ss_res));
1128 clean_cpsw_iores_ret:
1129         release_mem_region(priv->cpsw_res->start,
1130                            resource_size(priv->cpsw_res));
1131 clean_clk_ret:
1132         clk_put(priv->clk);
1133 clean_slave_ret:
1134         pm_runtime_disable(&pdev->dev);
1135         kfree(priv->slaves);
1136 clean_ndev_ret:
1137         free_netdev(ndev);
1138         return ret;
1139 }
1140
1141 static int __devexit cpsw_remove(struct platform_device *pdev)
1142 {
1143         struct net_device *ndev = platform_get_drvdata(pdev);
1144         struct cpsw_priv *priv = netdev_priv(ndev);
1145
1146         pr_info("removing device");
1147         platform_set_drvdata(pdev, NULL);
1148
1149         free_irq(ndev->irq, priv);
1150         cpsw_ale_destroy(priv->ale);
1151         cpdma_chan_destroy(priv->txch);
1152         cpdma_chan_destroy(priv->rxch);
1153         cpdma_ctlr_destroy(priv->dma);
1154         iounmap(priv->regs);
1155         release_mem_region(priv->cpsw_res->start,
1156                            resource_size(priv->cpsw_res));
1157         release_mem_region(priv->cpsw_ss_res->start,
1158                            resource_size(priv->cpsw_ss_res));
1159         pm_runtime_disable(&pdev->dev);
1160         clk_put(priv->clk);
1161         kfree(priv->slaves);
1162         free_netdev(ndev);
1163
1164         return 0;
1165 }
1166
1167 static int cpsw_suspend(struct device *dev)
1168 {
1169         struct platform_device  *pdev = to_platform_device(dev);
1170         struct net_device       *ndev = platform_get_drvdata(pdev);
1171
1172         if (netif_running(ndev))
1173                 cpsw_ndo_stop(ndev);
1174         pm_runtime_put_sync(&pdev->dev);
1175
1176         return 0;
1177 }
1178
1179 static int cpsw_resume(struct device *dev)
1180 {
1181         struct platform_device  *pdev = to_platform_device(dev);
1182         struct net_device       *ndev = platform_get_drvdata(pdev);
1183
1184         pm_runtime_get_sync(&pdev->dev);
1185         if (netif_running(ndev))
1186                 cpsw_ndo_open(ndev);
1187         return 0;
1188 }
1189
1190 static const struct dev_pm_ops cpsw_pm_ops = {
1191         .suspend        = cpsw_suspend,
1192         .resume         = cpsw_resume,
1193 };
1194
1195 static const struct of_device_id cpsw_of_mtable[] = {
1196         { .compatible = "ti,cpsw", },
1197         { /* sentinel */ },
1198 };
1199
1200 static struct platform_driver cpsw_driver = {
1201         .driver = {
1202                 .name    = "cpsw",
1203                 .owner   = THIS_MODULE,
1204                 .pm      = &cpsw_pm_ops,
1205                 .of_match_table = of_match_ptr(cpsw_of_mtable),
1206         },
1207         .probe = cpsw_probe,
1208         .remove = __devexit_p(cpsw_remove),
1209 };
1210
1211 static int __init cpsw_init(void)
1212 {
1213         return platform_driver_register(&cpsw_driver);
1214 }
1215 late_initcall(cpsw_init);
1216
1217 static void __exit cpsw_exit(void)
1218 {
1219         platform_driver_unregister(&cpsw_driver);
1220 }
1221 module_exit(cpsw_exit);
1222
1223 MODULE_LICENSE("GPL");
1224 MODULE_AUTHOR("Cyril Chemparathy <cyril@ti.com>");
1225 MODULE_AUTHOR("Mugunthan V N <mugunthanvnm@ti.com>");
1226 MODULE_DESCRIPTION("TI CPSW Ethernet driver");