root/drivers/net/ethernet/freescale/fman/mac.c

DEFINITIONS

1. mac_exception
2. set_fman_mac_params
3. tgec_initialization
4. dtsec_initialization
5. memac_initialization
6. start
7. stop
8. set_multi
9. fman_set_mac_active_pause
10. fman_get_pause_cfg
11. adjust_link_void
12. adjust_link_dtsec
13. adjust_link_memac
14. setup_dtsec
15. setup_tgec
16. setup_memac
17. dpaa_eth_add_device
18. mac_probe

   1 /* Copyright 2008-2015 Freescale Semiconductor, Inc.
   2  *
   3  * Redistribution and use in source and binary forms, with or without
   4  * modification, are permitted provided that the following conditions are met:
   5  *     * Redistributions of source code must retain the above copyright
   6  *       notice, this list of conditions and the following disclaimer.
   7  *     * Redistributions in binary form must reproduce the above copyright
   8  *       notice, this list of conditions and the following disclaimer in the
   9  *       documentation and/or other materials provided with the distribution.
  10  *     * Neither the name of Freescale Semiconductor nor the
  11  *       names of its contributors may be used to endorse or promote products
  12  *       derived from this software without specific prior written permission.
  13  *
  14  *
  15  * ALTERNATIVELY, this software may be distributed under the terms of the
  16  * GNU General Public License ("GPL") as published by the Free Software
  17  * Foundation, either version 2 of that License or (at your option) any
  18  * later version.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
  21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  23  * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
  24  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  25  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  27  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 
  32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  33 
  34 #include <linux/init.h>
  35 #include <linux/module.h>
  36 #include <linux/of_address.h>
  37 #include <linux/of_platform.h>
  38 #include <linux/of_net.h>
  39 #include <linux/of_mdio.h>
  40 #include <linux/device.h>
  41 #include <linux/phy.h>
  42 #include <linux/netdevice.h>
  43 #include <linux/phy_fixed.h>
  44 #include <linux/etherdevice.h>
  45 #include <linux/libfdt_env.h>
  46 
  47 #include "mac.h"
  48 #include "fman_mac.h"
  49 #include "fman_dtsec.h"
  50 #include "fman_tgec.h"
  51 #include "fman_memac.h"
  52 
  53 MODULE_LICENSE("Dual BSD/GPL");
  54 MODULE_DESCRIPTION("FSL FMan MAC API based driver");
  55 
  56 struct mac_priv_s {
  57         struct device                   *dev;
  58         void __iomem                    *vaddr;
  59         u8                              cell_index;
  60         struct fman                     *fman;
  61         struct device_node              *internal_phy_node;
  62         /* List of multicast addresses */
  63         struct list_head                mc_addr_list;
  64         struct platform_device          *eth_dev;
  65         struct fixed_phy_status         *fixed_link;
  66         u16                             speed;
  67         u16                             max_speed;
  68 
  69         int (*enable)(struct fman_mac *mac_dev, enum comm_mode mode);
  70         int (*disable)(struct fman_mac *mac_dev, enum comm_mode mode);
  71 };
  72 
  73 struct mac_address {
  74         u8 addr[ETH_ALEN];
  75         struct list_head list;
  76 };
  77 
  78 static void mac_exception(void *handle, enum fman_mac_exceptions ex)
  79 {
  80         struct mac_device       *mac_dev;
  81         struct mac_priv_s       *priv;
  82 
  83         mac_dev = handle;
  84         priv = mac_dev->priv;
  85 
  86         if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) {
  87                 /* don't flag RX FIFO after the first */
  88                 mac_dev->set_exception(mac_dev->fman_mac,
  89                                        FM_MAC_EX_10G_RX_FIFO_OVFL, false);
  90                 dev_err(priv->dev, "10G MAC got RX FIFO Error = %x\n", ex);
  91         }
  92 
  93         dev_dbg(priv->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c",
  94                 __func__, ex);
  95 }
  96 
  97 static void set_fman_mac_params(struct mac_device *mac_dev,
  98                                 struct fman_mac_params *params)
  99 {
 100         struct mac_priv_s *priv = mac_dev->priv;
 101 
 102         params->base_addr = (typeof(params->base_addr))
 103                 devm_ioremap(priv->dev, mac_dev->res->start,
 104                              resource_size(mac_dev->res));
 105         memcpy(&params->addr, mac_dev->addr, sizeof(mac_dev->addr));
 106         params->max_speed       = priv->max_speed;
 107         params->phy_if          = mac_dev->phy_if;
 108         params->basex_if        = false;
 109         params->mac_id          = priv->cell_index;
 110         params->fm              = (void *)priv->fman;
 111         params->exception_cb    = mac_exception;
 112         params->event_cb        = mac_exception;
 113         params->dev_id          = mac_dev;
 114         params->internal_phy_node = priv->internal_phy_node;
 115 }
 116 
 117 static int tgec_initialization(struct mac_device *mac_dev)
 118 {
 119         int err;
 120         struct mac_priv_s       *priv;
 121         struct fman_mac_params  params;
 122         u32                     version;
 123 
 124         priv = mac_dev->priv;
 125 
 126         set_fman_mac_params(mac_dev, &params);
 127 
 128         mac_dev->fman_mac = tgec_config(&params);
 129         if (!mac_dev->fman_mac) {
 130                 err = -EINVAL;
 131                 goto _return;
 132         }
 133 
 134         err = tgec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
 135         if (err < 0)
 136                 goto _return_fm_mac_free;
 137 
 138         err = tgec_init(mac_dev->fman_mac);
 139         if (err < 0)
 140                 goto _return_fm_mac_free;
 141 
 142         /* For 10G MAC, disable Tx ECC exception */
 143         err = mac_dev->set_exception(mac_dev->fman_mac,
 144                                      FM_MAC_EX_10G_TX_ECC_ER, false);
 145         if (err < 0)
 146                 goto _return_fm_mac_free;
 147 
 148         err = tgec_get_version(mac_dev->fman_mac, &version);
 149         if (err < 0)
 150                 goto _return_fm_mac_free;
 151 
 152         dev_info(priv->dev, "FMan XGEC version: 0x%08x\n", version);
 153 
 154         goto _return;
 155 
 156 _return_fm_mac_free:
 157         tgec_free(mac_dev->fman_mac);
 158 
 159 _return:
 160         return err;
 161 }
 162 
 163 static int dtsec_initialization(struct mac_device *mac_dev)
 164 {
 165         int                     err;
 166         struct mac_priv_s       *priv;
 167         struct fman_mac_params  params;
 168         u32                     version;
 169 
 170         priv = mac_dev->priv;
 171 
 172         set_fman_mac_params(mac_dev, &params);
 173 
 174         mac_dev->fman_mac = dtsec_config(&params);
 175         if (!mac_dev->fman_mac) {
 176                 err = -EINVAL;
 177                 goto _return;
 178         }
 179 
 180         err = dtsec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
 181         if (err < 0)
 182                 goto _return_fm_mac_free;
 183 
 184         err = dtsec_cfg_pad_and_crc(mac_dev->fman_mac, true);
 185         if (err < 0)
 186                 goto _return_fm_mac_free;
 187 
 188         err = dtsec_init(mac_dev->fman_mac);
 189         if (err < 0)
 190                 goto _return_fm_mac_free;
 191 
 192         /* For 1G MAC, disable by default the MIB counters overflow interrupt */
 193         err = mac_dev->set_exception(mac_dev->fman_mac,
 194                                      FM_MAC_EX_1G_RX_MIB_CNT_OVFL, false);
 195         if (err < 0)
 196                 goto _return_fm_mac_free;
 197 
 198         err = dtsec_get_version(mac_dev->fman_mac, &version);
 199         if (err < 0)
 200                 goto _return_fm_mac_free;
 201 
 202         dev_info(priv->dev, "FMan dTSEC version: 0x%08x\n", version);
 203 
 204         goto _return;
 205 
 206 _return_fm_mac_free:
 207         dtsec_free(mac_dev->fman_mac);
 208 
 209 _return:
 210         return err;
 211 }
 212 
 213 static int memac_initialization(struct mac_device *mac_dev)
 214 {
 215         int                      err;
 216         struct mac_priv_s       *priv;
 217         struct fman_mac_params   params;
 218 
 219         priv = mac_dev->priv;
 220 
 221         set_fman_mac_params(mac_dev, &params);
 222 
 223         if (priv->max_speed == SPEED_10000)
 224                 params.phy_if = PHY_INTERFACE_MODE_XGMII;
 225 
 226         mac_dev->fman_mac = memac_config(&params);
 227         if (!mac_dev->fman_mac) {
 228                 err = -EINVAL;
 229                 goto _return;
 230         }
 231 
 232         err = memac_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
 233         if (err < 0)
 234                 goto _return_fm_mac_free;
 235 
 236         err = memac_cfg_reset_on_init(mac_dev->fman_mac, true);
 237         if (err < 0)
 238                 goto _return_fm_mac_free;
 239 
 240         err = memac_cfg_fixed_link(mac_dev->fman_mac, priv->fixed_link);
 241         if (err < 0)
 242                 goto _return_fm_mac_free;
 243 
 244         err = memac_init(mac_dev->fman_mac);
 245         if (err < 0)
 246                 goto _return_fm_mac_free;
 247 
 248         dev_info(priv->dev, "FMan MEMAC\n");
 249 
 250         goto _return;
 251 
 252 _return_fm_mac_free:
 253         memac_free(mac_dev->fman_mac);
 254 
 255 _return:
 256         return err;
 257 }
 258 
 259 static int start(struct mac_device *mac_dev)
 260 {
 261         int      err;
 262         struct phy_device *phy_dev = mac_dev->phy_dev;
 263         struct mac_priv_s *priv = mac_dev->priv;
 264 
 265         err = priv->enable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
 266         if (!err && phy_dev)
 267                 phy_start(phy_dev);
 268 
 269         return err;
 270 }
 271 
 272 static int stop(struct mac_device *mac_dev)
 273 {
 274         struct mac_priv_s *priv = mac_dev->priv;
 275 
 276         if (mac_dev->phy_dev)
 277                 phy_stop(mac_dev->phy_dev);
 278 
 279         return priv->disable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
 280 }
 281 
 282 static int set_multi(struct net_device *net_dev, struct mac_device *mac_dev)
 283 {
 284         struct mac_priv_s       *priv;
 285         struct mac_address      *old_addr, *tmp;
 286         struct netdev_hw_addr   *ha;
 287         int                     err;
 288         enet_addr_t             *addr;
 289 
 290         priv = mac_dev->priv;
 291 
 292         /* Clear previous address list */
 293         list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) {
 294                 addr = (enet_addr_t *)old_addr->addr;
 295                 err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr);
 296                 if (err < 0)
 297                         return err;
 298 
 299                 list_del(&old_addr->list);
 300                 kfree(old_addr);
 301         }
 302 
 303         /* Add all the addresses from the new list */
 304         netdev_for_each_mc_addr(ha, net_dev) {
 305                 addr = (enet_addr_t *)ha->addr;
 306                 err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr);
 307                 if (err < 0)
 308                         return err;
 309 
 310                 tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC);
 311                 if (!tmp)
 312                         return -ENOMEM;
 313 
 314                 ether_addr_copy(tmp->addr, ha->addr);
 315                 list_add(&tmp->list, &priv->mc_addr_list);
 316         }
 317         return 0;
 318 }
 319 
 320 /**
 321  * fman_set_mac_active_pause
 322  * @mac_dev:    A pointer to the MAC device
 323  * @rx:         Pause frame setting for RX
 324  * @tx:         Pause frame setting for TX
 325  *
 326  * Set the MAC RX/TX PAUSE frames settings
 327  *
 328  * Avoid redundant calls to FMD, if the MAC driver already contains the desired
 329  * active PAUSE settings. Otherwise, the new active settings should be reflected
 330  * in FMan.
 331  *
 332  * Return: 0 on success; Error code otherwise.
 333  */
 334 int fman_set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx)
 335 {
 336         struct fman_mac *fman_mac = mac_dev->fman_mac;
 337         int err = 0;
 338 
 339         if (rx != mac_dev->rx_pause_active) {
 340                 err = mac_dev->set_rx_pause(fman_mac, rx);
 341                 if (likely(err == 0))
 342                         mac_dev->rx_pause_active = rx;
 343         }
 344 
 345         if (tx != mac_dev->tx_pause_active) {
 346                 u16 pause_time = (tx ? FSL_FM_PAUSE_TIME_ENABLE :
 347                                          FSL_FM_PAUSE_TIME_DISABLE);
 348 
 349                 err = mac_dev->set_tx_pause(fman_mac, 0, pause_time, 0);
 350 
 351                 if (likely(err == 0))
 352                         mac_dev->tx_pause_active = tx;
 353         }
 354 
 355         return err;
 356 }
 357 EXPORT_SYMBOL(fman_set_mac_active_pause);
 358 
 359 /**
 360  * fman_get_pause_cfg
 361  * @mac_dev:    A pointer to the MAC device
 362  * @rx:         Return value for RX setting
 363  * @tx:         Return value for TX setting
 364  *
 365  * Determine the MAC RX/TX PAUSE frames settings based on PHY
 366  * autonegotiation or values set by eththool.
 367  *
 368  * Return: Pointer to FMan device.
 369  */
 370 void fman_get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause,
 371                         bool *tx_pause)
 372 {
 373         struct phy_device *phy_dev = mac_dev->phy_dev;
 374         u16 lcl_adv, rmt_adv;
 375         u8 flowctrl;
 376 
 377         *rx_pause = *tx_pause = false;
 378 
 379         if (!phy_dev->duplex)
 380                 return;
 381 
 382         /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings
 383          * are those set by ethtool.
 384          */
 385         if (!mac_dev->autoneg_pause) {
 386                 *rx_pause = mac_dev->rx_pause_req;
 387                 *tx_pause = mac_dev->tx_pause_req;
 388                 return;
 389         }
 390 
 391         /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE
 392          * settings depend on the result of the link negotiation.
 393          */
 394 
 395         /* get local capabilities */
 396         lcl_adv = linkmode_adv_to_lcl_adv_t(phy_dev->advertising);
 397 
 398         /* get link partner capabilities */
 399         rmt_adv = 0;
 400         if (phy_dev->pause)
 401                 rmt_adv |= LPA_PAUSE_CAP;
 402         if (phy_dev->asym_pause)
 403                 rmt_adv |= LPA_PAUSE_ASYM;
 404 
 405         /* Calculate TX/RX settings based on local and peer advertised
 406          * symmetric/asymmetric PAUSE capabilities.
 407          */
 408         flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
 409         if (flowctrl & FLOW_CTRL_RX)
 410                 *rx_pause = true;
 411         if (flowctrl & FLOW_CTRL_TX)
 412                 *tx_pause = true;
 413 }
 414 EXPORT_SYMBOL(fman_get_pause_cfg);
 415 
 416 static void adjust_link_void(struct mac_device *mac_dev)
 417 {
 418 }
 419 
 420 static void adjust_link_dtsec(struct mac_device *mac_dev)
 421 {
 422         struct phy_device *phy_dev = mac_dev->phy_dev;
 423         struct fman_mac *fman_mac;
 424         bool rx_pause, tx_pause;
 425         int err;
 426 
 427         fman_mac = mac_dev->fman_mac;
 428         if (!phy_dev->link) {
 429                 dtsec_restart_autoneg(fman_mac);
 430 
 431                 return;
 432         }
 433 
 434         dtsec_adjust_link(fman_mac, phy_dev->speed);
 435         fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
 436         err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
 437         if (err < 0)
 438                 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
 439                         err);
 440 }
 441 
 442 static void adjust_link_memac(struct mac_device *mac_dev)
 443 {
 444         struct phy_device *phy_dev = mac_dev->phy_dev;
 445         struct fman_mac *fman_mac;
 446         bool rx_pause, tx_pause;
 447         int err;
 448 
 449         fman_mac = mac_dev->fman_mac;
 450         memac_adjust_link(fman_mac, phy_dev->speed);
 451 
 452         fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
 453         err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
 454         if (err < 0)
 455                 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
 456                         err);
 457 }
 458 
 459 static void setup_dtsec(struct mac_device *mac_dev)
 460 {
 461         mac_dev->init                   = dtsec_initialization;
 462         mac_dev->set_promisc            = dtsec_set_promiscuous;
 463         mac_dev->change_addr            = dtsec_modify_mac_address;
 464         mac_dev->add_hash_mac_addr      = dtsec_add_hash_mac_address;
 465         mac_dev->remove_hash_mac_addr   = dtsec_del_hash_mac_address;
 466         mac_dev->set_tx_pause           = dtsec_set_tx_pause_frames;
 467         mac_dev->set_rx_pause           = dtsec_accept_rx_pause_frames;
 468         mac_dev->set_exception          = dtsec_set_exception;
 469         mac_dev->set_allmulti           = dtsec_set_allmulti;
 470         mac_dev->set_tstamp             = dtsec_set_tstamp;
 471         mac_dev->set_multi              = set_multi;
 472         mac_dev->start                  = start;
 473         mac_dev->stop                   = stop;
 474         mac_dev->adjust_link            = adjust_link_dtsec;
 475         mac_dev->priv->enable           = dtsec_enable;
 476         mac_dev->priv->disable          = dtsec_disable;
 477 }
 478 
 479 static void setup_tgec(struct mac_device *mac_dev)
 480 {
 481         mac_dev->init                   = tgec_initialization;
 482         mac_dev->set_promisc            = tgec_set_promiscuous;
 483         mac_dev->change_addr            = tgec_modify_mac_address;
 484         mac_dev->add_hash_mac_addr      = tgec_add_hash_mac_address;
 485         mac_dev->remove_hash_mac_addr   = tgec_del_hash_mac_address;
 486         mac_dev->set_tx_pause           = tgec_set_tx_pause_frames;
 487         mac_dev->set_rx_pause           = tgec_accept_rx_pause_frames;
 488         mac_dev->set_exception          = tgec_set_exception;
 489         mac_dev->set_allmulti           = tgec_set_allmulti;
 490         mac_dev->set_tstamp             = tgec_set_tstamp;
 491         mac_dev->set_multi              = set_multi;
 492         mac_dev->start                  = start;
 493         mac_dev->stop                   = stop;
 494         mac_dev->adjust_link            = adjust_link_void;
 495         mac_dev->priv->enable           = tgec_enable;
 496         mac_dev->priv->disable          = tgec_disable;
 497 }
 498 
 499 static void setup_memac(struct mac_device *mac_dev)
 500 {
 501         mac_dev->init                   = memac_initialization;
 502         mac_dev->set_promisc            = memac_set_promiscuous;
 503         mac_dev->change_addr            = memac_modify_mac_address;
 504         mac_dev->add_hash_mac_addr      = memac_add_hash_mac_address;
 505         mac_dev->remove_hash_mac_addr   = memac_del_hash_mac_address;
 506         mac_dev->set_tx_pause           = memac_set_tx_pause_frames;
 507         mac_dev->set_rx_pause           = memac_accept_rx_pause_frames;
 508         mac_dev->set_exception          = memac_set_exception;
 509         mac_dev->set_allmulti           = memac_set_allmulti;
 510         mac_dev->set_tstamp             = memac_set_tstamp;
 511         mac_dev->set_multi              = set_multi;
 512         mac_dev->start                  = start;
 513         mac_dev->stop                   = stop;
 514         mac_dev->adjust_link            = adjust_link_memac;
 515         mac_dev->priv->enable           = memac_enable;
 516         mac_dev->priv->disable          = memac_disable;
 517 }
 518 
 519 #define DTSEC_SUPPORTED \
 520         (SUPPORTED_10baseT_Half \
 521         | SUPPORTED_10baseT_Full \
 522         | SUPPORTED_100baseT_Half \
 523         | SUPPORTED_100baseT_Full \
 524         | SUPPORTED_Autoneg \
 525         | SUPPORTED_Pause \
 526         | SUPPORTED_Asym_Pause \
 527         | SUPPORTED_MII)
 528 
 529 static DEFINE_MUTEX(eth_lock);
 530 
 531 static const u16 phy2speed[] = {
 532         [PHY_INTERFACE_MODE_MII]                = SPEED_100,
 533         [PHY_INTERFACE_MODE_GMII]               = SPEED_1000,
 534         [PHY_INTERFACE_MODE_SGMII]              = SPEED_1000,
 535         [PHY_INTERFACE_MODE_TBI]                = SPEED_1000,
 536         [PHY_INTERFACE_MODE_RMII]               = SPEED_100,
 537         [PHY_INTERFACE_MODE_RGMII]              = SPEED_1000,
 538         [PHY_INTERFACE_MODE_RGMII_ID]           = SPEED_1000,
 539         [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000,
 540         [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000,
 541         [PHY_INTERFACE_MODE_RTBI]               = SPEED_1000,
 542         [PHY_INTERFACE_MODE_QSGMII]             = SPEED_1000,
 543         [PHY_INTERFACE_MODE_XGMII]              = SPEED_10000
 544 };
 545 
 546 static struct platform_device *dpaa_eth_add_device(int fman_id,
 547                                                    struct mac_device *mac_dev)
 548 {
 549         struct platform_device *pdev;
 550         struct dpaa_eth_data data;
 551         struct mac_priv_s       *priv;
 552         static int dpaa_eth_dev_cnt;
 553         int ret;
 554 
 555         priv = mac_dev->priv;
 556 
 557         data.mac_dev = mac_dev;
 558         data.mac_hw_id = priv->cell_index;
 559         data.fman_hw_id = fman_id;
 560 
 561         mutex_lock(&eth_lock);
 562         pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt);
 563         if (!pdev) {
 564                 ret = -ENOMEM;
 565                 goto no_mem;
 566         }
 567 
 568         pdev->dev.parent = priv->dev;
 569 
 570         ret = platform_device_add_data(pdev, &data, sizeof(data));
 571         if (ret)
 572                 goto err;
 573 
 574         ret = platform_device_add(pdev);
 575         if (ret)
 576                 goto err;
 577 
 578         dpaa_eth_dev_cnt++;
 579         mutex_unlock(&eth_lock);
 580 
 581         return pdev;
 582 
 583 err:
 584         platform_device_put(pdev);
 585 no_mem:
 586         mutex_unlock(&eth_lock);
 587 
 588         return ERR_PTR(ret);
 589 }
 590 
 591 static const struct of_device_id mac_match[] = {
 592         { .compatible   = "fsl,fman-dtsec" },
 593         { .compatible   = "fsl,fman-xgec" },
 594         { .compatible   = "fsl,fman-memac" },
 595         {}
 596 };
 597 MODULE_DEVICE_TABLE(of, mac_match);
 598 
 599 static int mac_probe(struct platform_device *_of_dev)
 600 {
 601         int                      err, i, nph;
 602         struct device           *dev;
 603         struct device_node      *mac_node, *dev_node;
 604         struct mac_device       *mac_dev;
 605         struct platform_device  *of_dev;
 606         struct resource          res;
 607         struct mac_priv_s       *priv;
 608         const u8                *mac_addr;
 609         u32                      val;
 610         u8                      fman_id;
 611         int                     phy_if;
 612 
 613         dev = &_of_dev->dev;
 614         mac_node = dev->of_node;
 615 
 616         mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL);
 617         if (!mac_dev) {
 618                 err = -ENOMEM;
 619                 goto _return;
 620         }
 621         priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 622         if (!priv) {
 623                 err = -ENOMEM;
 624                 goto _return;
 625         }
 626 
 627         /* Save private information */
 628         mac_dev->priv = priv;
 629         priv->dev = dev;
 630 
 631         if (of_device_is_compatible(mac_node, "fsl,fman-dtsec")) {
 632                 setup_dtsec(mac_dev);
 633                 priv->internal_phy_node = of_parse_phandle(mac_node,
 634                                                           "tbi-handle", 0);
 635         } else if (of_device_is_compatible(mac_node, "fsl,fman-xgec")) {
 636                 setup_tgec(mac_dev);
 637         } else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) {
 638                 setup_memac(mac_dev);
 639                 priv->internal_phy_node = of_parse_phandle(mac_node,
 640                                                           "pcsphy-handle", 0);
 641         } else {
 642                 dev_err(dev, "MAC node (%pOF) contains unsupported MAC\n",
 643                         mac_node);
 644                 err = -EINVAL;
 645                 goto _return;
 646         }
 647 
 648         INIT_LIST_HEAD(&priv->mc_addr_list);
 649 
 650         /* Get the FM node */
 651         dev_node = of_get_parent(mac_node);
 652         if (!dev_node) {
 653                 dev_err(dev, "of_get_parent(%pOF) failed\n",
 654                         mac_node);
 655                 err = -EINVAL;
 656                 goto _return_of_get_parent;
 657         }
 658 
 659         of_dev = of_find_device_by_node(dev_node);
 660         if (!of_dev) {
 661                 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node);
 662                 err = -EINVAL;
 663                 goto _return_of_node_put;
 664         }
 665 
 666         /* Get the FMan cell-index */
 667         err = of_property_read_u32(dev_node, "cell-index", &val);
 668         if (err) {
 669                 dev_err(dev, "failed to read cell-index for %pOF\n", dev_node);
 670                 err = -EINVAL;
 671                 goto _return_of_node_put;
 672         }
 673         /* cell-index 0 => FMan id 1 */
 674         fman_id = (u8)(val + 1);
 675 
 676         priv->fman = fman_bind(&of_dev->dev);
 677         if (!priv->fman) {
 678                 dev_err(dev, "fman_bind(%pOF) failed\n", dev_node);
 679                 err = -ENODEV;
 680                 goto _return_of_node_put;
 681         }
 682 
 683         of_node_put(dev_node);
 684 
 685         /* Get the address of the memory mapped registers */
 686         err = of_address_to_resource(mac_node, 0, &res);
 687         if (err < 0) {
 688                 dev_err(dev, "of_address_to_resource(%pOF) = %d\n",
 689                         mac_node, err);
 690                 goto _return_of_get_parent;
 691         }
 692 
 693         mac_dev->res = __devm_request_region(dev,
 694                                              fman_get_mem_region(priv->fman),
 695                                              res.start, res.end + 1 - res.start,
 696                                              "mac");
 697         if (!mac_dev->res) {
 698                 dev_err(dev, "__devm_request_mem_region(mac) failed\n");
 699                 err = -EBUSY;
 700                 goto _return_of_get_parent;
 701         }
 702 
 703         priv->vaddr = devm_ioremap(dev, mac_dev->res->start,
 704                                    mac_dev->res->end + 1 - mac_dev->res->start);
 705         if (!priv->vaddr) {
 706                 dev_err(dev, "devm_ioremap() failed\n");
 707                 err = -EIO;
 708                 goto _return_of_get_parent;
 709         }
 710 
 711         if (!of_device_is_available(mac_node)) {
 712                 err = -ENODEV;
 713                 goto _return_of_get_parent;
 714         }
 715 
 716         /* Get the cell-index */
 717         err = of_property_read_u32(mac_node, "cell-index", &val);
 718         if (err) {
 719                 dev_err(dev, "failed to read cell-index for %pOF\n", mac_node);
 720                 err = -EINVAL;
 721                 goto _return_of_get_parent;
 722         }
 723         priv->cell_index = (u8)val;
 724 
 725         /* Get the MAC address */
 726         mac_addr = of_get_mac_address(mac_node);
 727         if (IS_ERR(mac_addr)) {
 728                 dev_err(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
 729                 err = -EINVAL;
 730                 goto _return_of_get_parent;
 731         }
 732         ether_addr_copy(mac_dev->addr, mac_addr);
 733 
 734         /* Get the port handles */
 735         nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
 736         if (unlikely(nph < 0)) {
 737                 dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n",
 738                         mac_node);
 739                 err = nph;
 740                 goto _return_of_get_parent;
 741         }
 742 
 743         if (nph != ARRAY_SIZE(mac_dev->port)) {
 744                 dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n",
 745                         mac_node);
 746                 err = -EINVAL;
 747                 goto _return_of_get_parent;
 748         }
 749 
 750         for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) {
 751                 /* Find the port node */
 752                 dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i);
 753                 if (!dev_node) {
 754                         dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n",
 755                                 mac_node);
 756                         err = -EINVAL;
 757                         goto _return_of_node_put;
 758                 }
 759 
 760                 of_dev = of_find_device_by_node(dev_node);
 761                 if (!of_dev) {
 762                         dev_err(dev, "of_find_device_by_node(%pOF) failed\n",
 763                                 dev_node);
 764                         err = -EINVAL;
 765                         goto _return_of_node_put;
 766                 }
 767 
 768                 mac_dev->port[i] = fman_port_bind(&of_dev->dev);
 769                 if (!mac_dev->port[i]) {
 770                         dev_err(dev, "dev_get_drvdata(%pOF) failed\n",
 771                                 dev_node);
 772                         err = -EINVAL;
 773                         goto _return_of_node_put;
 774                 }
 775                 of_node_put(dev_node);
 776         }
 777 
 778         /* Get the PHY connection type */
 779         phy_if = of_get_phy_mode(mac_node);
 780         if (phy_if < 0) {
 781                 dev_warn(dev,
 782                          "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n",
 783                          mac_node);
 784                 phy_if = PHY_INTERFACE_MODE_SGMII;
 785         }
 786         mac_dev->phy_if = phy_if;
 787 
 788         priv->speed             = phy2speed[mac_dev->phy_if];
 789         priv->max_speed         = priv->speed;
 790         mac_dev->if_support     = DTSEC_SUPPORTED;
 791         /* We don't support half-duplex in SGMII mode */
 792         if (mac_dev->phy_if == PHY_INTERFACE_MODE_SGMII)
 793                 mac_dev->if_support &= ~(SUPPORTED_10baseT_Half |
 794                                         SUPPORTED_100baseT_Half);
 795 
 796         /* Gigabit support (no half-duplex) */
 797         if (priv->max_speed == 1000)
 798                 mac_dev->if_support |= SUPPORTED_1000baseT_Full;
 799 
 800         /* The 10G interface only supports one mode */
 801         if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII)
 802                 mac_dev->if_support = SUPPORTED_10000baseT_Full;
 803 
 804         /* Get the rest of the PHY information */
 805         mac_dev->phy_node = of_parse_phandle(mac_node, "phy-handle", 0);
 806         if (!mac_dev->phy_node && of_phy_is_fixed_link(mac_node)) {
 807                 struct phy_device *phy;
 808 
 809                 err = of_phy_register_fixed_link(mac_node);
 810                 if (err)
 811                         goto _return_of_get_parent;
 812 
 813                 priv->fixed_link = kzalloc(sizeof(*priv->fixed_link),
 814                                            GFP_KERNEL);
 815                 if (!priv->fixed_link) {
 816                         err = -ENOMEM;
 817                         goto _return_of_get_parent;
 818                 }
 819 
 820                 mac_dev->phy_node = of_node_get(mac_node);
 821                 phy = of_phy_find_device(mac_dev->phy_node);
 822                 if (!phy) {
 823                         err = -EINVAL;
 824                         of_node_put(mac_dev->phy_node);
 825                         goto _return_of_get_parent;
 826                 }
 827 
 828                 priv->fixed_link->link = phy->link;
 829                 priv->fixed_link->speed = phy->speed;
 830                 priv->fixed_link->duplex = phy->duplex;
 831                 priv->fixed_link->pause = phy->pause;
 832                 priv->fixed_link->asym_pause = phy->asym_pause;
 833 
 834                 put_device(&phy->mdio.dev);
 835         }
 836 
 837         err = mac_dev->init(mac_dev);
 838         if (err < 0) {
 839                 dev_err(dev, "mac_dev->init() = %d\n", err);
 840                 of_node_put(mac_dev->phy_node);
 841                 goto _return_of_get_parent;
 842         }
 843 
 844         /* pause frame autonegotiation enabled */
 845         mac_dev->autoneg_pause = true;
 846 
 847         /* By intializing the values to false, force FMD to enable PAUSE frames
 848          * on RX and TX
 849          */
 850         mac_dev->rx_pause_req = true;
 851         mac_dev->tx_pause_req = true;
 852         mac_dev->rx_pause_active = false;
 853         mac_dev->tx_pause_active = false;
 854         err = fman_set_mac_active_pause(mac_dev, true, true);
 855         if (err < 0)
 856                 dev_err(dev, "fman_set_mac_active_pause() = %d\n", err);
 857 
 858         dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
 859 
 860         priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
 861         if (IS_ERR(priv->eth_dev)) {
 862                 dev_err(dev, "failed to add Ethernet platform device for MAC %d\n",
 863                         priv->cell_index);
 864                 priv->eth_dev = NULL;
 865         }
 866 
 867         goto _return;
 868 
 869 _return_of_node_put:
 870         of_node_put(dev_node);
 871 _return_of_get_parent:
 872         kfree(priv->fixed_link);
 873 _return:
 874         return err;
 875 }
 876 
 877 static struct platform_driver mac_driver = {
 878         .driver = {
 879                 .name           = KBUILD_MODNAME,
 880                 .of_match_table = mac_match,
 881         },
 882         .probe          = mac_probe,
 883 };
 884 
 885 builtin_platform_driver(mac_driver);