drivers/net/ti/cpsw.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * CPSW Ethernet Switch Driver
   4  *
   5  * Copyright (C) 2010-2018 Texas Instruments Incorporated - http://www.ti.com/
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <net.h>
  11 #include <miiphy.h>
  12 #include <malloc.h>
  13 #include <net.h>
  14 #include <netdev.h>
  15 #include <cpsw.h>
  16 #include <linux/errno.h>
  17 #include <asm/gpio.h>
  18 #include <asm/io.h>
  19 #include <phy.h>
  20 #include <asm/arch/cpu.h>
  21 #include <dm.h>
  22 #include <fdt_support.h>
  23
  24 #include "cpsw_mdio.h"
  25
  26 DECLARE_GLOBAL_DATA_PTR;
  27
  28 #define BITMASK(bits)           (BIT(bits) - 1)
  29 #define NUM_DESCS               (PKTBUFSRX * 2)
  30 #define PKT_MIN                 60
  31 #define PKT_MAX                 (1500 + 14 + 4 + 4)
  32 #define CLEAR_BIT               1
  33 #define GIGABITEN               BIT(7)
  34 #define FULLDUPLEXEN            BIT(0)
  35 #define MIIEN                   BIT(15)
  36
  37 /* reg offset */
  38 #define CPSW_HOST_PORT_OFFSET   0x108
  39 #define CPSW_SLAVE0_OFFSET      0x208
  40 #define CPSW_SLAVE1_OFFSET      0x308
  41 #define CPSW_SLAVE_SIZE         0x100
  42 #define CPSW_CPDMA_OFFSET       0x800
  43 #define CPSW_HW_STATS           0x900
  44 #define CPSW_STATERAM_OFFSET    0xa00
  45 #define CPSW_CPTS_OFFSET        0xc00
  46 #define CPSW_ALE_OFFSET         0xd00
  47 #define CPSW_SLIVER0_OFFSET     0xd80
  48 #define CPSW_SLIVER1_OFFSET     0xdc0
  49 #define CPSW_BD_OFFSET          0x2000
  50 #define CPSW_MDIO_DIV           0xff
  51
  52 #define AM335X_GMII_SEL_OFFSET  0x630
  53
  54 /* DMA Registers */
  55 #define CPDMA_TXCONTROL         0x004
  56 #define CPDMA_RXCONTROL         0x014
  57 #define CPDMA_SOFTRESET         0x01c
  58 #define CPDMA_RXFREE            0x0e0
  59 #define CPDMA_TXHDP_VER1        0x100
  60 #define CPDMA_TXHDP_VER2        0x200
  61 #define CPDMA_RXHDP_VER1        0x120
  62 #define CPDMA_RXHDP_VER2        0x220
  63 #define CPDMA_TXCP_VER1         0x140
  64 #define CPDMA_TXCP_VER2         0x240
  65 #define CPDMA_RXCP_VER1         0x160
  66 #define CPDMA_RXCP_VER2         0x260
  67
  68 /* Descriptor mode bits */
  69 #define CPDMA_DESC_SOP          BIT(31)
  70 #define CPDMA_DESC_EOP          BIT(30)
  71 #define CPDMA_DESC_OWNER        BIT(29)
  72 #define CPDMA_DESC_EOQ          BIT(28)
  73
  74 /*
  75  * This timeout definition is a worst-case ultra defensive measure against
  76  * unexpected controller lock ups.  Ideally, we should never ever hit this
  77  * scenario in practice.
  78  */
  79 #define CPDMA_TIMEOUT           100 /* msecs */
  80
  81 struct cpsw_regs {
  82         u32     id_ver;
  83         u32     control;
  84         u32     soft_reset;
  85         u32     stat_port_en;
  86         u32     ptype;
  87 };
  88
  89 struct cpsw_slave_regs {
  90         u32     max_blks;
  91         u32     blk_cnt;
  92         u32     flow_thresh;
  93         u32     port_vlan;
  94         u32     tx_pri_map;
  95 #ifdef CONFIG_AM33XX
  96         u32     gap_thresh;
  97 #elif defined(CONFIG_TI814X)
  98         u32     ts_ctl;
  99         u32     ts_seq_ltype;
 100         u32     ts_vlan;
 101 #endif
 102         u32     sa_lo;
 103         u32     sa_hi;
 104 };
 105
 106 struct cpsw_host_regs {
 107         u32     max_blks;
 108         u32     blk_cnt;
 109         u32     flow_thresh;
 110         u32     port_vlan;
 111         u32     tx_pri_map;
 112         u32     cpdma_tx_pri_map;
 113         u32     cpdma_rx_chan_map;
 114 };
 115
 116 struct cpsw_sliver_regs {
 117         u32     id_ver;
 118         u32     mac_control;
 119         u32     mac_status;
 120         u32     soft_reset;
 121         u32     rx_maxlen;
 122         u32     __reserved_0;
 123         u32     rx_pause;
 124         u32     tx_pause;
 125         u32     __reserved_1;
 126         u32     rx_pri_map;
 127 };
 128
 129 #define ALE_ENTRY_BITS          68
 130 #define ALE_ENTRY_WORDS         DIV_ROUND_UP(ALE_ENTRY_BITS, 32)
 131
 132 /* ALE Registers */
 133 #define ALE_CONTROL             0x08
 134 #define ALE_UNKNOWNVLAN         0x18
 135 #define ALE_TABLE_CONTROL       0x20
 136 #define ALE_TABLE               0x34
 137 #define ALE_PORTCTL             0x40
 138
 139 #define ALE_TABLE_WRITE         BIT(31)
 140
 141 #define ALE_TYPE_FREE                   0
 142 #define ALE_TYPE_ADDR                   1
 143 #define ALE_TYPE_VLAN                   2
 144 #define ALE_TYPE_VLAN_ADDR              3
 145
 146 #define ALE_UCAST_PERSISTANT            0
 147 #define ALE_UCAST_UNTOUCHED             1
 148 #define ALE_UCAST_OUI                   2
 149 #define ALE_UCAST_TOUCHED               3
 150
 151 #define ALE_MCAST_FWD                   0
 152 #define ALE_MCAST_BLOCK_LEARN_FWD       1
 153 #define ALE_MCAST_FWD_LEARN             2
 154 #define ALE_MCAST_FWD_2                 3
 155
 156 enum cpsw_ale_port_state {
 157         ALE_PORT_STATE_DISABLE  = 0x00,
 158         ALE_PORT_STATE_BLOCK    = 0x01,
 159         ALE_PORT_STATE_LEARN    = 0x02,
 160         ALE_PORT_STATE_FORWARD  = 0x03,
 161 };
 162
 163 /* ALE unicast entry flags - passed into cpsw_ale_add_ucast() */
 164 #define ALE_SECURE      1
 165 #define ALE_BLOCKED     2
 166
 167 struct cpsw_slave {
 168         struct cpsw_slave_regs          *regs;
 169         struct cpsw_sliver_regs         *sliver;
 170         int                             slave_num;
 171         u32                             mac_control;
 172         struct cpsw_slave_data          *data;
 173 };
 174
 175 struct cpdma_desc {
 176         /* hardware fields */
 177         u32                     hw_next;
 178         u32                     hw_buffer;
 179         u32                     hw_len;
 180         u32                     hw_mode;
 181         /* software fields */
 182         u32                     sw_buffer;
 183         u32                     sw_len;
 184 };
 185
 186 struct cpdma_chan {
 187         struct cpdma_desc       *head, *tail;
 188         void                    *hdp, *cp, *rxfree;
 189 };
 190
 191 /* AM33xx SoC specific definitions for the CONTROL port */
 192 #define AM33XX_GMII_SEL_MODE_MII        0
 193 #define AM33XX_GMII_SEL_MODE_RMII       1
 194 #define AM33XX_GMII_SEL_MODE_RGMII      2
 195
 196 #define AM33XX_GMII_SEL_RGMII1_IDMODE   BIT(4)
 197 #define AM33XX_GMII_SEL_RGMII2_IDMODE   BIT(5)
 198 #define AM33XX_GMII_SEL_RMII1_IO_CLK_EN BIT(6)
 199 #define AM33XX_GMII_SEL_RMII2_IO_CLK_EN BIT(7)
 200
 201 #define GMII_SEL_MODE_MASK              0x3
 202
 203 #define desc_write(desc, fld, val)      __raw_writel((u32)(val), &(desc)->fld)
 204 #define desc_read(desc, fld)            __raw_readl(&(desc)->fld)
 205 #define desc_read_ptr(desc, fld)        ((void *)__raw_readl(&(desc)->fld))
 206
 207 #define chan_write(chan, fld, val)      __raw_writel((u32)(val), (chan)->fld)
 208 #define chan_read(chan, fld)            __raw_readl((chan)->fld)
 209 #define chan_read_ptr(chan, fld)        ((void *)__raw_readl((chan)->fld))
 210
 211 #define for_active_slave(slave, priv) \
 212         slave = (priv)->slaves + ((priv)->data)->active_slave; if (slave)
 213 #define for_each_slave(slave, priv) \
 214         for (slave = (priv)->slaves; slave != (priv)->slaves + \
 215                                 ((priv)->data)->slaves; slave++)
 216
 217 struct cpsw_priv {
 218 #ifdef CONFIG_DM_ETH
 219         struct udevice                  *dev;
 220 #else
 221         struct eth_device               *dev;
 222 #endif
 223         struct cpsw_platform_data       *data;
 224         int                             host_port;
 225
 226         struct cpsw_regs                *regs;
 227         void                            *dma_regs;
 228         struct cpsw_host_regs           *host_port_regs;
 229         void                            *ale_regs;
 230
 231         struct cpdma_desc               *descs;
 232         struct cpdma_desc               *desc_free;
 233         struct cpdma_chan               rx_chan, tx_chan;
 234
 235         struct cpsw_slave               *slaves;
 236         struct phy_device               *phydev;
 237         struct mii_dev                  *bus;
 238
 239         u32                             phy_mask;
 240 };
 241
 242 static inline int cpsw_ale_get_field(u32 *ale_entry, u32 start, u32 bits)
 243 {
 244         int idx;
 245
 246         idx    = start / 32;
 247         start -= idx * 32;
 248         idx    = 2 - idx; /* flip */
 249         return (ale_entry[idx] >> start) & BITMASK(bits);
 250 }
 251
 252 static inline void cpsw_ale_set_field(u32 *ale_entry, u32 start, u32 bits,
 253                                       u32 value)
 254 {
 255         int idx;
 256
 257         value &= BITMASK(bits);
 258         idx    = start / 32;
 259         start -= idx * 32;
 260         idx    = 2 - idx; /* flip */
 261         ale_entry[idx] &= ~(BITMASK(bits) << start);
 262         ale_entry[idx] |=  (value << start);
 263 }
 264
 265 #define DEFINE_ALE_FIELD(name, start, bits)                             \
 266 static inline int cpsw_ale_get_##name(u32 *ale_entry)                   \
 267 {                                                                       \
 268         return cpsw_ale_get_field(ale_entry, start, bits);              \
 269 }                                                                       \
 270 static inline void cpsw_ale_set_##name(u32 *ale_entry, u32 value)       \
 271 {                                                                       \
 272         cpsw_ale_set_field(ale_entry, start, bits, value);              \
 273 }
 274
 275 DEFINE_ALE_FIELD(entry_type,            60,     2)
 276 DEFINE_ALE_FIELD(mcast_state,           62,     2)
 277 DEFINE_ALE_FIELD(port_mask,             66,     3)
 278 DEFINE_ALE_FIELD(ucast_type,            62,     2)
 279 DEFINE_ALE_FIELD(port_num,              66,     2)
 280 DEFINE_ALE_FIELD(blocked,               65,     1)
 281 DEFINE_ALE_FIELD(secure,                64,     1)
 282 DEFINE_ALE_FIELD(mcast,                 40,     1)
 283
 284 /* The MAC address field in the ALE entry cannot be macroized as above */
 285 static inline void cpsw_ale_get_addr(u32 *ale_entry, u8 *addr)
 286 {
 287         int i;
 288
 289         for (i = 0; i < 6; i++)
 290                 addr[i] = cpsw_ale_get_field(ale_entry, 40 - 8*i, 8);
 291 }
 292
 293 static inline void cpsw_ale_set_addr(u32 *ale_entry, const u8 *addr)
 294 {
 295         int i;
 296
 297         for (i = 0; i < 6; i++)
 298                 cpsw_ale_set_field(ale_entry, 40 - 8*i, 8, addr[i]);
 299 }
 300
 301 static int cpsw_ale_read(struct cpsw_priv *priv, int idx, u32 *ale_entry)
 302 {
 303         int i;
 304
 305         __raw_writel(idx, priv->ale_regs + ALE_TABLE_CONTROL);
 306
 307         for (i = 0; i < ALE_ENTRY_WORDS; i++)
 308                 ale_entry[i] = __raw_readl(priv->ale_regs + ALE_TABLE + 4 * i);
 309
 310         return idx;
 311 }
 312
 313 static int cpsw_ale_write(struct cpsw_priv *priv, int idx, u32 *ale_entry)
 314 {
 315         int i;
 316
 317         for (i = 0; i < ALE_ENTRY_WORDS; i++)
 318                 __raw_writel(ale_entry[i], priv->ale_regs + ALE_TABLE + 4 * i);
 319
 320         __raw_writel(idx | ALE_TABLE_WRITE, priv->ale_regs + ALE_TABLE_CONTROL);
 321
 322         return idx;
 323 }
 324
 325 static int cpsw_ale_match_addr(struct cpsw_priv *priv, const u8 *addr)
 326 {
 327         u32 ale_entry[ALE_ENTRY_WORDS];
 328         int type, idx;
 329
 330         for (idx = 0; idx < priv->data->ale_entries; idx++) {
 331                 u8 entry_addr[6];
 332
 333                 cpsw_ale_read(priv, idx, ale_entry);
 334                 type = cpsw_ale_get_entry_type(ale_entry);
 335                 if (type != ALE_TYPE_ADDR && type != ALE_TYPE_VLAN_ADDR)
 336                         continue;
 337                 cpsw_ale_get_addr(ale_entry, entry_addr);
 338                 if (memcmp(entry_addr, addr, 6) == 0)
 339                         return idx;
 340         }
 341         return -ENOENT;
 342 }
 343
 344 static int cpsw_ale_match_free(struct cpsw_priv *priv)
 345 {
 346         u32 ale_entry[ALE_ENTRY_WORDS];
 347         int type, idx;
 348
 349         for (idx = 0; idx < priv->data->ale_entries; idx++) {
 350                 cpsw_ale_read(priv, idx, ale_entry);
 351                 type = cpsw_ale_get_entry_type(ale_entry);
 352                 if (type == ALE_TYPE_FREE)
 353                         return idx;
 354         }
 355         return -ENOENT;
 356 }
 357
 358 static int cpsw_ale_find_ageable(struct cpsw_priv *priv)
 359 {
 360         u32 ale_entry[ALE_ENTRY_WORDS];
 361         int type, idx;
 362
 363         for (idx = 0; idx < priv->data->ale_entries; idx++) {
 364                 cpsw_ale_read(priv, idx, ale_entry);
 365                 type = cpsw_ale_get_entry_type(ale_entry);
 366                 if (type != ALE_TYPE_ADDR && type != ALE_TYPE_VLAN_ADDR)
 367                         continue;
 368                 if (cpsw_ale_get_mcast(ale_entry))
 369                         continue;
 370                 type = cpsw_ale_get_ucast_type(ale_entry);
 371                 if (type != ALE_UCAST_PERSISTANT &&
 372                     type != ALE_UCAST_OUI)
 373                         return idx;
 374         }
 375         return -ENOENT;
 376 }
 377
 378 static int cpsw_ale_add_ucast(struct cpsw_priv *priv, const u8 *addr,
 379                               int port, int flags)
 380 {
 381         u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
 382         int idx;
 383
 384         cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR);
 385         cpsw_ale_set_addr(ale_entry, addr);
 386         cpsw_ale_set_ucast_type(ale_entry, ALE_UCAST_PERSISTANT);
 387         cpsw_ale_set_secure(ale_entry, (flags & ALE_SECURE) ? 1 : 0);
 388         cpsw_ale_set_blocked(ale_entry, (flags & ALE_BLOCKED) ? 1 : 0);
 389         cpsw_ale_set_port_num(ale_entry, port);
 390
 391         idx = cpsw_ale_match_addr(priv, addr);
 392         if (idx < 0)
 393                 idx = cpsw_ale_match_free(priv);
 394         if (idx < 0)
 395                 idx = cpsw_ale_find_ageable(priv);
 396         if (idx < 0)
 397                 return -ENOMEM;
 398
 399         cpsw_ale_write(priv, idx, ale_entry);
 400         return 0;
 401 }
 402
 403 static int cpsw_ale_add_mcast(struct cpsw_priv *priv, const u8 *addr,
 404                               int port_mask)
 405 {
 406         u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
 407         int idx, mask;
 408
 409         idx = cpsw_ale_match_addr(priv, addr);
 410         if (idx >= 0)
 411                 cpsw_ale_read(priv, idx, ale_entry);
 412
 413         cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_ADDR);
 414         cpsw_ale_set_addr(ale_entry, addr);
 415         cpsw_ale_set_mcast_state(ale_entry, ALE_MCAST_FWD_2);
 416
 417         mask = cpsw_ale_get_port_mask(ale_entry);
 418         port_mask |= mask;
 419         cpsw_ale_set_port_mask(ale_entry, port_mask);
 420
 421         if (idx < 0)
 422                 idx = cpsw_ale_match_free(priv);
 423         if (idx < 0)
 424                 idx = cpsw_ale_find_ageable(priv);
 425         if (idx < 0)
 426                 return -ENOMEM;
 427
 428         cpsw_ale_write(priv, idx, ale_entry);
 429         return 0;
 430 }
 431
 432 static inline void cpsw_ale_control(struct cpsw_priv *priv, int bit, int val)
 433 {
 434         u32 tmp, mask = BIT(bit);
 435
 436         tmp  = __raw_readl(priv->ale_regs + ALE_CONTROL);
 437         tmp &= ~mask;
 438         tmp |= val ? mask : 0;
 439         __raw_writel(tmp, priv->ale_regs + ALE_CONTROL);
 440 }
 441
 442 #define cpsw_ale_enable(priv, val)      cpsw_ale_control(priv, 31, val)
 443 #define cpsw_ale_clear(priv, val)       cpsw_ale_control(priv, 30, val)
 444 #define cpsw_ale_vlan_aware(priv, val)  cpsw_ale_control(priv,  2, val)
 445
 446 static inline void cpsw_ale_port_state(struct cpsw_priv *priv, int port,
 447                                        int val)
 448 {
 449         int offset = ALE_PORTCTL + 4 * port;
 450         u32 tmp, mask = 0x3;
 451
 452         tmp  = __raw_readl(priv->ale_regs + offset);
 453         tmp &= ~mask;
 454         tmp |= val & mask;
 455         __raw_writel(tmp, priv->ale_regs + offset);
 456 }
 457
 458 /* Set a self-clearing bit in a register, and wait for it to clear */
 459 static inline void setbit_and_wait_for_clear32(void *addr)
 460 {
 461         __raw_writel(CLEAR_BIT, addr);
 462         while (__raw_readl(addr) & CLEAR_BIT)
 463                 ;
 464 }
 465
 466 #define mac_hi(mac)     (((mac)[0] << 0) | ((mac)[1] << 8) |    \
 467                          ((mac)[2] << 16) | ((mac)[3] << 24))
 468 #define mac_lo(mac)     (((mac)[4] << 0) | ((mac)[5] << 8))
 469
 470 static void cpsw_set_slave_mac(struct cpsw_slave *slave,
 471                                struct cpsw_priv *priv)
 472 {
 473 #ifdef CONFIG_DM_ETH
 474         struct eth_pdata *pdata = dev_get_platdata(priv->dev);
 475
 476         writel(mac_hi(pdata->enetaddr), &slave->regs->sa_hi);
 477         writel(mac_lo(pdata->enetaddr), &slave->regs->sa_lo);
 478 #else
 479         __raw_writel(mac_hi(priv->dev->enetaddr), &slave->regs->sa_hi);
 480         __raw_writel(mac_lo(priv->dev->enetaddr), &slave->regs->sa_lo);
 481 #endif
 482 }
 483
 484 static int cpsw_slave_update_link(struct cpsw_slave *slave,
 485                                    struct cpsw_priv *priv, int *link)
 486 {
 487         struct phy_device *phy;
 488         u32 mac_control = 0;
 489         int ret = -ENODEV;
 490
 491         phy = priv->phydev;
 492         if (!phy)
 493                 goto out;
 494
 495         ret = phy_startup(phy);
 496         if (ret)
 497                 goto out;
 498
 499         if (link)
 500                 *link = phy->link;
 501
 502         if (phy->link) { /* link up */
 503                 mac_control = priv->data->mac_control;
 504                 if (phy->speed == 1000)
 505                         mac_control |= GIGABITEN;
 506                 if (phy->duplex == DUPLEX_FULL)
 507                         mac_control |= FULLDUPLEXEN;
 508                 if (phy->speed == 100)
 509                         mac_control |= MIIEN;
 510         }
 511
 512         if (mac_control == slave->mac_control)
 513                 goto out;
 514
 515         if (mac_control) {
 516                 printf("link up on port %d, speed %d, %s duplex\n",
 517                                 slave->slave_num, phy->speed,
 518                                 (phy->duplex == DUPLEX_FULL) ? "full" : "half");
 519         } else {
 520                 printf("link down on port %d\n", slave->slave_num);
 521         }
 522
 523         __raw_writel(mac_control, &slave->sliver->mac_control);
 524         slave->mac_control = mac_control;
 525
 526 out:
 527         return ret;
 528 }
 529
 530 static int cpsw_update_link(struct cpsw_priv *priv)
 531 {
 532         int ret = -ENODEV;
 533         struct cpsw_slave *slave;
 534
 535         for_active_slave(slave, priv)
 536                 ret = cpsw_slave_update_link(slave, priv, NULL);
 537
 538         return ret;
 539 }
 540
 541 static inline u32  cpsw_get_slave_port(struct cpsw_priv *priv, u32 slave_num)
 542 {
 543         if (priv->host_port == 0)
 544                 return slave_num + 1;
 545         else
 546                 return slave_num;
 547 }
 548
 549 static void cpsw_slave_init(struct cpsw_slave *slave, struct cpsw_priv *priv)
 550 {
 551         u32     slave_port;
 552
 553         setbit_and_wait_for_clear32(&slave->sliver->soft_reset);
 554
 555         /* setup priority mapping */
 556         __raw_writel(0x76543210, &slave->sliver->rx_pri_map);
 557         __raw_writel(0x33221100, &slave->regs->tx_pri_map);
 558
 559         /* setup max packet size, and mac address */
 560         __raw_writel(PKT_MAX, &slave->sliver->rx_maxlen);
 561         cpsw_set_slave_mac(slave, priv);
 562
 563         slave->mac_control = 0; /* no link yet */
 564
 565         /* enable forwarding */
 566         slave_port = cpsw_get_slave_port(priv, slave->slave_num);
 567         cpsw_ale_port_state(priv, slave_port, ALE_PORT_STATE_FORWARD);
 568
 569         cpsw_ale_add_mcast(priv, net_bcast_ethaddr, 1 << slave_port);
 570
 571         priv->phy_mask |= 1 << slave->data->phy_addr;
 572 }
 573
 574 static struct cpdma_desc *cpdma_desc_alloc(struct cpsw_priv *priv)
 575 {
 576         struct cpdma_desc *desc = priv->desc_free;
 577
 578         if (desc)
 579                 priv->desc_free = desc_read_ptr(desc, hw_next);
 580         return desc;
 581 }
 582
 583 static void cpdma_desc_free(struct cpsw_priv *priv, struct cpdma_desc *desc)
 584 {
 585         if (desc) {
 586                 desc_write(desc, hw_next, priv->desc_free);
 587                 priv->desc_free = desc;
 588         }
 589 }
 590
 591 static int cpdma_submit(struct cpsw_priv *priv, struct cpdma_chan *chan,
 592                         void *buffer, int len)
 593 {
 594         struct cpdma_desc *desc, *prev;
 595         u32 mode;
 596
 597         desc = cpdma_desc_alloc(priv);
 598         if (!desc)
 599                 return -ENOMEM;
 600
 601         if (len < PKT_MIN)
 602                 len = PKT_MIN;
 603
 604         mode = CPDMA_DESC_OWNER | CPDMA_DESC_SOP | CPDMA_DESC_EOP;
 605
 606         desc_write(desc, hw_next,   0);
 607         desc_write(desc, hw_buffer, buffer);
 608         desc_write(desc, hw_len,    len);
 609         desc_write(desc, hw_mode,   mode | len);
 610         desc_write(desc, sw_buffer, buffer);
 611         desc_write(desc, sw_len,    len);
 612
 613         if (!chan->head) {
 614                 /* simple case - first packet enqueued */
 615                 chan->head = desc;
 616                 chan->tail = desc;
 617                 chan_write(chan, hdp, desc);
 618                 goto done;
 619         }
 620
 621         /* not the first packet - enqueue at the tail */
 622         prev = chan->tail;
 623         desc_write(prev, hw_next, desc);
 624         chan->tail = desc;
 625
 626         /* next check if EOQ has been triggered already */
 627         if (desc_read(prev, hw_mode) & CPDMA_DESC_EOQ)
 628                 chan_write(chan, hdp, desc);
 629
 630 done:
 631         if (chan->rxfree)
 632                 chan_write(chan, rxfree, 1);
 633         return 0;
 634 }
 635
 636 static int cpdma_process(struct cpsw_priv *priv, struct cpdma_chan *chan,
 637                          void **buffer, int *len)
 638 {
 639         struct cpdma_desc *desc = chan->head;
 640         u32 status;
 641
 642         if (!desc)
 643                 return -ENOENT;
 644
 645         status = desc_read(desc, hw_mode);
 646
 647         if (len)
 648                 *len = status & 0x7ff;
 649
 650         if (buffer)
 651                 *buffer = desc_read_ptr(desc, sw_buffer);
 652
 653         if (status & CPDMA_DESC_OWNER) {
 654                 if (chan_read(chan, hdp) == 0) {
 655                         if (desc_read(desc, hw_mode) & CPDMA_DESC_OWNER)
 656                                 chan_write(chan, hdp, desc);
 657                 }
 658
 659                 return -EBUSY;
 660         }
 661
 662         chan->head = desc_read_ptr(desc, hw_next);
 663         chan_write(chan, cp, desc);
 664
 665         cpdma_desc_free(priv, desc);
 666         return 0;
 667 }
 668
 669 static int _cpsw_init(struct cpsw_priv *priv, u8 *enetaddr)
 670 {
 671         struct cpsw_slave       *slave;
 672         int i, ret;
 673
 674         /* soft reset the controller and initialize priv */
 675         setbit_and_wait_for_clear32(&priv->regs->soft_reset);
 676
 677         /* initialize and reset the address lookup engine */
 678         cpsw_ale_enable(priv, 1);
 679         cpsw_ale_clear(priv, 1);
 680         cpsw_ale_vlan_aware(priv, 0); /* vlan unaware mode */
 681
 682         /* setup host port priority mapping */
 683         __raw_writel(0x76543210, &priv->host_port_regs->cpdma_tx_pri_map);
 684         __raw_writel(0, &priv->host_port_regs->cpdma_rx_chan_map);
 685
 686         /* disable priority elevation and enable statistics on all ports */
 687         __raw_writel(0, &priv->regs->ptype);
 688
 689         /* enable statistics collection only on the host port */
 690         __raw_writel(BIT(priv->host_port), &priv->regs->stat_port_en);
 691         __raw_writel(0x7, &priv->regs->stat_port_en);
 692
 693         cpsw_ale_port_state(priv, priv->host_port, ALE_PORT_STATE_FORWARD);
 694
 695         cpsw_ale_add_ucast(priv, enetaddr, priv->host_port, ALE_SECURE);
 696         cpsw_ale_add_mcast(priv, net_bcast_ethaddr, 1 << priv->host_port);
 697
 698         for_active_slave(slave, priv)
 699                 cpsw_slave_init(slave, priv);
 700
 701         ret = cpsw_update_link(priv);
 702         if (ret)
 703                 goto out;
 704
 705         /* init descriptor pool */
 706         for (i = 0; i < NUM_DESCS; i++) {
 707                 desc_write(&priv->descs[i], hw_next,
 708                            (i == (NUM_DESCS - 1)) ? 0 : &priv->descs[i+1]);
 709         }
 710         priv->desc_free = &priv->descs[0];
 711
 712         /* initialize channels */
 713         if (priv->data->version == CPSW_CTRL_VERSION_2) {
 714                 memset(&priv->rx_chan, 0, sizeof(struct cpdma_chan));
 715                 priv->rx_chan.hdp       = priv->dma_regs + CPDMA_RXHDP_VER2;
 716                 priv->rx_chan.cp        = priv->dma_regs + CPDMA_RXCP_VER2;
 717                 priv->rx_chan.rxfree    = priv->dma_regs + CPDMA_RXFREE;
 718
 719                 memset(&priv->tx_chan, 0, sizeof(struct cpdma_chan));
 720                 priv->tx_chan.hdp       = priv->dma_regs + CPDMA_TXHDP_VER2;
 721                 priv->tx_chan.cp        = priv->dma_regs + CPDMA_TXCP_VER2;
 722         } else {
 723                 memset(&priv->rx_chan, 0, sizeof(struct cpdma_chan));
 724                 priv->rx_chan.hdp       = priv->dma_regs + CPDMA_RXHDP_VER1;
 725                 priv->rx_chan.cp        = priv->dma_regs + CPDMA_RXCP_VER1;
 726                 priv->rx_chan.rxfree    = priv->dma_regs + CPDMA_RXFREE;
 727
 728                 memset(&priv->tx_chan, 0, sizeof(struct cpdma_chan));
 729                 priv->tx_chan.hdp       = priv->dma_regs + CPDMA_TXHDP_VER1;
 730                 priv->tx_chan.cp        = priv->dma_regs + CPDMA_TXCP_VER1;
 731         }
 732
 733         /* clear dma state */
 734         setbit_and_wait_for_clear32(priv->dma_regs + CPDMA_SOFTRESET);
 735
 736         if (priv->data->version == CPSW_CTRL_VERSION_2) {
 737                 for (i = 0; i < priv->data->channels; i++) {
 738                         __raw_writel(0, priv->dma_regs + CPDMA_RXHDP_VER2 + 4
 739                                         * i);
 740                         __raw_writel(0, priv->dma_regs + CPDMA_RXFREE + 4
 741                                         * i);
 742                         __raw_writel(0, priv->dma_regs + CPDMA_RXCP_VER2 + 4
 743                                         * i);
 744                         __raw_writel(0, priv->dma_regs + CPDMA_TXHDP_VER2 + 4
 745                                         * i);
 746                         __raw_writel(0, priv->dma_regs + CPDMA_TXCP_VER2 + 4
 747                                         * i);
 748                 }
 749         } else {
 750                 for (i = 0; i < priv->data->channels; i++) {
 751                         __raw_writel(0, priv->dma_regs + CPDMA_RXHDP_VER1 + 4
 752                                         * i);
 753                         __raw_writel(0, priv->dma_regs + CPDMA_RXFREE + 4
 754                                         * i);
 755                         __raw_writel(0, priv->dma_regs + CPDMA_RXCP_VER1 + 4
 756                                         * i);
 757                         __raw_writel(0, priv->dma_regs + CPDMA_TXHDP_VER1 + 4
 758                                         * i);
 759                         __raw_writel(0, priv->dma_regs + CPDMA_TXCP_VER1 + 4
 760                                         * i);
 761
 762                 }
 763         }
 764
 765         __raw_writel(1, priv->dma_regs + CPDMA_TXCONTROL);
 766         __raw_writel(1, priv->dma_regs + CPDMA_RXCONTROL);
 767
 768         /* submit rx descs */
 769         for (i = 0; i < PKTBUFSRX; i++) {
 770                 ret = cpdma_submit(priv, &priv->rx_chan, net_rx_packets[i],
 771                                    PKTSIZE);
 772                 if (ret < 0) {
 773                         printf("error %d submitting rx desc\n", ret);
 774                         break;
 775                 }
 776         }
 777
 778 out:
 779         return ret;
 780 }
 781
 782 static int cpsw_reap_completed_packets(struct cpsw_priv *priv)
 783 {
 784         int timeout = CPDMA_TIMEOUT;
 785
 786         /* reap completed packets */
 787         while (timeout-- &&
 788                (cpdma_process(priv, &priv->tx_chan, NULL, NULL) >= 0))
 789                 ;
 790
 791         return timeout;
 792 }
 793
 794 static void _cpsw_halt(struct cpsw_priv *priv)
 795 {
 796         cpsw_reap_completed_packets(priv);
 797
 798         writel(0, priv->dma_regs + CPDMA_TXCONTROL);
 799         writel(0, priv->dma_regs + CPDMA_RXCONTROL);
 800
 801         /* soft reset the controller and initialize priv */
 802         setbit_and_wait_for_clear32(&priv->regs->soft_reset);
 803
 804         /* clear dma state */
 805         setbit_and_wait_for_clear32(priv->dma_regs + CPDMA_SOFTRESET);
 806
 807 }
 808
 809 static int _cpsw_send(struct cpsw_priv *priv, void *packet, int length)
 810 {
 811         int timeout;
 812
 813         flush_dcache_range((unsigned long)packet,
 814                            (unsigned long)packet + ALIGN(length, PKTALIGN));
 815
 816         timeout = cpsw_reap_completed_packets(priv);
 817         if (timeout == -1) {
 818                 printf("cpdma_process timeout\n");
 819                 return -ETIMEDOUT;
 820         }
 821
 822         return cpdma_submit(priv, &priv->tx_chan, packet, length);
 823 }
 824
 825 static int _cpsw_recv(struct cpsw_priv *priv, uchar **pkt)
 826 {
 827         void *buffer;
 828         int len;
 829         int ret;
 830
 831         ret = cpdma_process(priv, &priv->rx_chan, &buffer, &len);
 832         if (ret < 0)
 833                 return ret;
 834
 835         invalidate_dcache_range((unsigned long)buffer,
 836                                 (unsigned long)buffer + PKTSIZE_ALIGN);
 837         *pkt = buffer;
 838
 839         return len;
 840 }
 841
 842 static void cpsw_slave_setup(struct cpsw_slave *slave, int slave_num,
 843                             struct cpsw_priv *priv)
 844 {
 845         void                    *regs = priv->regs;
 846         struct cpsw_slave_data  *data = priv->data->slave_data + slave_num;
 847         slave->slave_num = slave_num;
 848         slave->data     = data;
 849         slave->regs     = regs + data->slave_reg_ofs;
 850         slave->sliver   = regs + data->sliver_reg_ofs;
 851 }
 852
 853 static int cpsw_phy_init(struct cpsw_priv *priv, struct cpsw_slave *slave)
 854 {
 855         struct phy_device *phydev;
 856         u32 supported = PHY_GBIT_FEATURES;
 857
 858         phydev = phy_connect(priv->bus,
 859                         slave->data->phy_addr,
 860                         priv->dev,
 861                         slave->data->phy_if);
 862
 863         if (!phydev)
 864                 return -1;
 865
 866         phydev->supported &= supported;
 867         phydev->advertising = phydev->supported;
 868
 869 #ifdef CONFIG_DM_ETH
 870         if (slave->data->phy_of_handle)
 871                 phydev->node = offset_to_ofnode(slave->data->phy_of_handle);
 872 #endif
 873
 874         priv->phydev = phydev;
 875         phy_config(phydev);
 876
 877         return 1;
 878 }
 879
 880 static void cpsw_phy_addr_update(struct cpsw_priv *priv)
 881 {
 882         struct cpsw_platform_data *data = priv->data;
 883         u16 alive = cpsw_mdio_get_alive(priv->bus);
 884         int active = data->active_slave;
 885         int new_addr = ffs(alive) - 1;
 886
 887         /*
 888          * If there is only one phy alive and its address does not match
 889          * that of active slave, then phy address can safely be updated.
 890          */
 891         if (hweight16(alive) == 1 &&
 892             data->slave_data[active].phy_addr != new_addr) {
 893                 printf("Updated phy address for CPSW#%d, old: %d, new: %d\n",
 894                        active, data->slave_data[active].phy_addr, new_addr);
 895                 data->slave_data[active].phy_addr = new_addr;
 896         }
 897 }
 898
 899 int _cpsw_register(struct cpsw_priv *priv)
 900 {
 901         struct cpsw_slave       *slave;
 902         struct cpsw_platform_data *data = priv->data;
 903         void                    *regs = (void *)data->cpsw_base;
 904
 905         priv->slaves = malloc(sizeof(struct cpsw_slave) * data->slaves);
 906         if (!priv->slaves) {
 907                 return -ENOMEM;
 908         }
 909
 910         priv->host_port         = data->host_port_num;
 911         priv->regs              = regs;
 912         priv->host_port_regs    = regs + data->host_port_reg_ofs;
 913         priv->dma_regs          = regs + data->cpdma_reg_ofs;
 914         priv->ale_regs          = regs + data->ale_reg_ofs;
 915         priv->descs             = (void *)regs + data->bd_ram_ofs;
 916
 917         int idx = 0;
 918
 919         for_each_slave(slave, priv) {
 920                 cpsw_slave_setup(slave, idx, priv);
 921                 idx = idx + 1;
 922         }
 923
 924         priv->bus = cpsw_mdio_init(priv->dev->name, data->mdio_base, 0, 0);
 925         if (!priv->bus)
 926                 return -EFAULT;
 927
 928         cpsw_phy_addr_update(priv);
 929
 930         for_active_slave(slave, priv)
 931                 cpsw_phy_init(priv, slave);
 932
 933         return 0;
 934 }
 935
 936 #ifndef CONFIG_DM_ETH
 937 static int cpsw_init(struct eth_device *dev, bd_t *bis)
 938 {
 939         struct cpsw_priv        *priv = dev->priv;
 940
 941         return _cpsw_init(priv, dev->enetaddr);
 942 }
 943
 944 static void cpsw_halt(struct eth_device *dev)
 945 {
 946         struct cpsw_priv *priv = dev->priv;
 947
 948         return _cpsw_halt(priv);
 949 }
 950
 951 static int cpsw_send(struct eth_device *dev, void *packet, int length)
 952 {
 953         struct cpsw_priv        *priv = dev->priv;
 954
 955         return _cpsw_send(priv, packet, length);
 956 }
 957
 958 static int cpsw_recv(struct eth_device *dev)
 959 {
 960         struct cpsw_priv *priv = dev->priv;
 961         uchar *pkt = NULL;
 962         int len;
 963
 964         len = _cpsw_recv(priv, &pkt);
 965
 966         if (len > 0) {
 967                 net_process_received_packet(pkt, len);
 968                 cpdma_submit(priv, &priv->rx_chan, pkt, PKTSIZE);
 969         }
 970
 971         return len;
 972 }
 973
 974 int cpsw_register(struct cpsw_platform_data *data)
 975 {
 976         struct cpsw_priv        *priv;
 977         struct eth_device       *dev;
 978         int ret;
 979
 980         dev = calloc(sizeof(*dev), 1);
 981         if (!dev)
 982                 return -ENOMEM;
 983
 984         priv = calloc(sizeof(*priv), 1);
 985         if (!priv) {
 986                 free(dev);
 987                 return -ENOMEM;
 988         }
 989
 990         priv->dev = dev;
 991         priv->data = data;
 992
 993         strcpy(dev->name, "cpsw");
 994         dev->iobase     = 0;
 995         dev->init       = cpsw_init;
 996         dev->halt       = cpsw_halt;
 997         dev->send       = cpsw_send;
 998         dev->recv       = cpsw_recv;
 999         dev->priv       = priv;
1000
1001         eth_register(dev);
1002
1003         ret = _cpsw_register(priv);
1004         if (ret < 0) {
1005                 eth_unregister(dev);
1006                 free(dev);
1007                 free(priv);
1008                 return ret;
1009         }
1010
1011         return 1;
1012 }
1013 #else
1014 static int cpsw_eth_start(struct udevice *dev)
1015 {
1016         struct eth_pdata *pdata = dev_get_platdata(dev);
1017         struct cpsw_priv *priv = dev_get_priv(dev);
1018
1019         return _cpsw_init(priv, pdata->enetaddr);
1020 }
1021
1022 static int cpsw_eth_send(struct udevice *dev, void *packet, int length)
1023 {
1024         struct cpsw_priv *priv = dev_get_priv(dev);
1025
1026         return _cpsw_send(priv, packet, length);
1027 }
1028
1029 static int cpsw_eth_recv(struct udevice *dev, int flags, uchar **packetp)
1030 {
1031         struct cpsw_priv *priv = dev_get_priv(dev);
1032
1033         return _cpsw_recv(priv, packetp);
1034 }
1035
1036 static int cpsw_eth_free_pkt(struct udevice *dev, uchar *packet,
1037                                    int length)
1038 {
1039         struct cpsw_priv *priv = dev_get_priv(dev);
1040
1041         return cpdma_submit(priv, &priv->rx_chan, packet, PKTSIZE);
1042 }
1043
1044 static void cpsw_eth_stop(struct udevice *dev)
1045 {
1046         struct cpsw_priv *priv = dev_get_priv(dev);
1047
1048         return _cpsw_halt(priv);
1049 }
1050
1051 static const struct eth_ops cpsw_eth_ops = {
1052         .start          = cpsw_eth_start,
1053         .send           = cpsw_eth_send,
1054         .recv           = cpsw_eth_recv,
1055         .free_pkt       = cpsw_eth_free_pkt,
1056         .stop           = cpsw_eth_stop,
1057 };
1058
1059 static inline fdt_addr_t cpsw_get_addr_by_node(const void *fdt, int node)
1060 {
1061         return fdtdec_get_addr_size_auto_noparent(fdt, node, "reg", 0, NULL,
1062                                                   false);
1063 }
1064
1065 static void cpsw_gmii_sel_am3352(struct cpsw_priv *priv,
1066                                  phy_interface_t phy_mode)
1067 {
1068         u32 reg;
1069         u32 mask;
1070         u32 mode = 0;
1071         bool rgmii_id = false;
1072         int slave = priv->data->active_slave;
1073
1074         reg = readl(priv->data->gmii_sel);
1075
1076         switch (phy_mode) {
1077         case PHY_INTERFACE_MODE_RMII:
1078                 mode = AM33XX_GMII_SEL_MODE_RMII;
1079                 break;
1080
1081         case PHY_INTERFACE_MODE_RGMII:
1082                 mode = AM33XX_GMII_SEL_MODE_RGMII;
1083                 break;
1084         case PHY_INTERFACE_MODE_RGMII_ID:
1085         case PHY_INTERFACE_MODE_RGMII_RXID:
1086         case PHY_INTERFACE_MODE_RGMII_TXID:
1087                 mode = AM33XX_GMII_SEL_MODE_RGMII;
1088                 rgmii_id = true;
1089                 break;
1090
1091         case PHY_INTERFACE_MODE_MII:
1092         default:
1093                 mode = AM33XX_GMII_SEL_MODE_MII;
1094                 break;
1095         };
1096
1097         mask = GMII_SEL_MODE_MASK << (slave * 2) | BIT(slave + 6);
1098         mode <<= slave * 2;
1099
1100         if (priv->data->rmii_clock_external) {
1101                 if (slave == 0)
1102                         mode |= AM33XX_GMII_SEL_RMII1_IO_CLK_EN;
1103                 else
1104                         mode |= AM33XX_GMII_SEL_RMII2_IO_CLK_EN;
1105         }
1106
1107         if (rgmii_id) {
1108                 if (slave == 0)
1109                         mode |= AM33XX_GMII_SEL_RGMII1_IDMODE;
1110                 else
1111                         mode |= AM33XX_GMII_SEL_RGMII2_IDMODE;
1112         }
1113
1114         reg &= ~mask;
1115         reg |= mode;
1116
1117         writel(reg, priv->data->gmii_sel);
1118 }
1119
1120 static void cpsw_gmii_sel_dra7xx(struct cpsw_priv *priv,
1121                                  phy_interface_t phy_mode)
1122 {
1123         u32 reg;
1124         u32 mask;
1125         u32 mode = 0;
1126         int slave = priv->data->active_slave;
1127
1128         reg = readl(priv->data->gmii_sel);
1129
1130         switch (phy_mode) {
1131         case PHY_INTERFACE_MODE_RMII:
1132                 mode = AM33XX_GMII_SEL_MODE_RMII;
1133                 break;
1134
1135         case PHY_INTERFACE_MODE_RGMII:
1136         case PHY_INTERFACE_MODE_RGMII_ID:
1137         case PHY_INTERFACE_MODE_RGMII_RXID:
1138         case PHY_INTERFACE_MODE_RGMII_TXID:
1139                 mode = AM33XX_GMII_SEL_MODE_RGMII;
1140                 break;
1141
1142         case PHY_INTERFACE_MODE_MII:
1143         default:
1144                 mode = AM33XX_GMII_SEL_MODE_MII;
1145                 break;
1146         };
1147
1148         switch (slave) {
1149         case 0:
1150                 mask = GMII_SEL_MODE_MASK;
1151                 break;
1152         case 1:
1153                 mask = GMII_SEL_MODE_MASK << 4;
1154                 mode <<= 4;
1155                 break;
1156         default:
1157                 dev_err(priv->dev, "invalid slave number...\n");
1158                 return;
1159         }
1160
1161         if (priv->data->rmii_clock_external)
1162                 dev_err(priv->dev, "RMII External clock is not supported\n");
1163
1164         reg &= ~mask;
1165         reg |= mode;
1166
1167         writel(reg, priv->data->gmii_sel);
1168 }
1169
1170 static void cpsw_phy_sel(struct cpsw_priv *priv, const char *compat,
1171                          phy_interface_t phy_mode)
1172 {
1173         if (!strcmp(compat, "ti,am3352-cpsw-phy-sel"))
1174                 cpsw_gmii_sel_am3352(priv, phy_mode);
1175         if (!strcmp(compat, "ti,am43xx-cpsw-phy-sel"))
1176                 cpsw_gmii_sel_am3352(priv, phy_mode);
1177         else if (!strcmp(compat, "ti,dra7xx-cpsw-phy-sel"))
1178                 cpsw_gmii_sel_dra7xx(priv, phy_mode);
1179 }
1180
1181 static int cpsw_eth_probe(struct udevice *dev)
1182 {
1183         struct cpsw_priv *priv = dev_get_priv(dev);
1184         struct eth_pdata *pdata = dev_get_platdata(dev);
1185
1186         priv->dev = dev;
1187         priv->data = pdata->priv_pdata;
1188         /* Select phy interface in control module */
1189         cpsw_phy_sel(priv, priv->data->phy_sel_compat,
1190                      pdata->phy_interface);
1191
1192         return _cpsw_register(priv);
1193 }
1194
1195 static int cpsw_eth_ofdata_to_platdata(struct udevice *dev)
1196 {
1197         struct eth_pdata *pdata = dev_get_platdata(dev);
1198         struct cpsw_platform_data *data;
1199         struct gpio_desc *mode_gpios;
1200         const char *phy_mode;
1201         const void *fdt = gd->fdt_blob;
1202         int node = dev_of_offset(dev);
1203         int subnode;
1204         int slave_index = 0;
1205         int active_slave;
1206         int num_mode_gpios;
1207         int ret;
1208
1209         data = calloc(1, sizeof(struct cpsw_platform_data));
1210         pdata->priv_pdata = data;
1211         pdata->iobase = devfdt_get_addr(dev);
1212         data->version = CPSW_CTRL_VERSION_2;
1213         data->bd_ram_ofs = CPSW_BD_OFFSET;
1214         data->ale_reg_ofs = CPSW_ALE_OFFSET;
1215         data->cpdma_reg_ofs = CPSW_CPDMA_OFFSET;
1216         data->mdio_div = CPSW_MDIO_DIV;
1217         data->host_port_reg_ofs = CPSW_HOST_PORT_OFFSET,
1218
1219         pdata->phy_interface = -1;
1220
1221         data->cpsw_base = pdata->iobase;
1222         data->channels = fdtdec_get_int(fdt, node, "cpdma_channels", -1);
1223         if (data->channels <= 0) {
1224                 printf("error: cpdma_channels not found in dt\n");
1225                 return -ENOENT;
1226         }
1227
1228         data->slaves = fdtdec_get_int(fdt, node, "slaves", -1);
1229         if (data->slaves <= 0) {
1230                 printf("error: slaves not found in dt\n");
1231                 return -ENOENT;
1232         }
1233         data->slave_data = malloc(sizeof(struct cpsw_slave_data) *
1234                                        data->slaves);
1235
1236         data->ale_entries = fdtdec_get_int(fdt, node, "ale_entries", -1);
1237         if (data->ale_entries <= 0) {
1238                 printf("error: ale_entries not found in dt\n");
1239                 return -ENOENT;
1240         }
1241
1242         data->bd_ram_ofs = fdtdec_get_int(fdt, node, "bd_ram_size", -1);
1243         if (data->bd_ram_ofs <= 0) {
1244                 printf("error: bd_ram_size not found in dt\n");
1245                 return -ENOENT;
1246         }
1247
1248         data->mac_control = fdtdec_get_int(fdt, node, "mac_control", -1);
1249         if (data->mac_control <= 0) {
1250                 printf("error: ale_entries not found in dt\n");
1251                 return -ENOENT;
1252         }
1253
1254         num_mode_gpios = gpio_get_list_count(dev, "mode-gpios");
1255         if (num_mode_gpios > 0) {
1256                 mode_gpios = malloc(sizeof(struct gpio_desc) *
1257                                     num_mode_gpios);
1258                 gpio_request_list_by_name(dev, "mode-gpios", mode_gpios,
1259                                           num_mode_gpios, GPIOD_IS_OUT);
1260                 free(mode_gpios);
1261         }
1262
1263         active_slave = fdtdec_get_int(fdt, node, "active_slave", 0);
1264         data->active_slave = active_slave;
1265
1266         fdt_for_each_subnode(subnode, fdt, node) {
1267                 int len;
1268                 const char *name;
1269
1270                 name = fdt_get_name(fdt, subnode, &len);
1271                 if (!strncmp(name, "mdio", 4)) {
1272                         u32 mdio_base;
1273
1274                         mdio_base = cpsw_get_addr_by_node(fdt, subnode);
1275                         if (mdio_base == FDT_ADDR_T_NONE) {
1276                                 pr_err("Not able to get MDIO address space\n");
1277                                 return -ENOENT;
1278                         }
1279                         data->mdio_base = mdio_base;
1280                 }
1281
1282                 if (!strncmp(name, "slave", 5)) {
1283                         u32 phy_id[2];
1284
1285                         if (slave_index >= data->slaves)
1286                                 continue;
1287                         phy_mode = fdt_getprop(fdt, subnode, "phy-mode", NULL);
1288                         if (phy_mode)
1289                                 data->slave_data[slave_index].phy_if =
1290                                         phy_get_interface_by_name(phy_mode);
1291
1292                         data->slave_data[slave_index].phy_of_handle =
1293                                 fdtdec_lookup_phandle(fdt, subnode,
1294                                                       "phy-handle");
1295
1296                         if (data->slave_data[slave_index].phy_of_handle >= 0) {
1297                                 data->slave_data[slave_index].phy_addr =
1298                                                 fdtdec_get_int(gd->fdt_blob,
1299                                                 data->slave_data[slave_index].phy_of_handle,
1300                                                                "reg", -1);
1301                         } else {
1302                                 fdtdec_get_int_array(fdt, subnode, "phy_id",
1303                                                      phy_id, 2);
1304                                 data->slave_data[slave_index].phy_addr =
1305                                                 phy_id[1];
1306                         }
1307                         slave_index++;
1308                 }
1309
1310                 if (!strncmp(name, "cpsw-phy-sel", 12)) {
1311                         data->gmii_sel = cpsw_get_addr_by_node(fdt, subnode);
1312
1313                         if (data->gmii_sel == FDT_ADDR_T_NONE) {
1314                                 pr_err("Not able to get gmii_sel reg address\n");
1315                                 return -ENOENT;
1316                         }
1317
1318                         if (fdt_get_property(fdt, subnode, "rmii-clock-ext",
1319                                              NULL))
1320                                 data->rmii_clock_external = true;
1321
1322                         data->phy_sel_compat = fdt_getprop(fdt, subnode,
1323                                                            "compatible", NULL);
1324                         if (!data->phy_sel_compat) {
1325                                 pr_err("Not able to get gmii_sel compatible\n");
1326                                 return -ENOENT;
1327                         }
1328                 }
1329         }
1330
1331         data->slave_data[0].slave_reg_ofs = CPSW_SLAVE0_OFFSET;
1332         data->slave_data[0].sliver_reg_ofs = CPSW_SLIVER0_OFFSET;
1333
1334         if (data->slaves == 2) {
1335                 data->slave_data[1].slave_reg_ofs = CPSW_SLAVE1_OFFSET;
1336                 data->slave_data[1].sliver_reg_ofs = CPSW_SLIVER1_OFFSET;
1337         }
1338
1339         ret = ti_cm_get_macid(dev, active_slave, pdata->enetaddr);
1340         if (ret < 0) {
1341                 pr_err("cpsw read efuse mac failed\n");
1342                 return ret;
1343         }
1344
1345         pdata->phy_interface = data->slave_data[active_slave].phy_if;
1346         if (pdata->phy_interface == -1) {
1347                 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
1348                 return -EINVAL;
1349         }
1350
1351         return 0;
1352 }
1353
1354 int cpsw_get_slave_phy_addr(struct udevice *dev, int slave)
1355 {
1356         struct cpsw_priv *priv = dev_get_priv(dev);
1357         struct cpsw_platform_data *data = priv->data;
1358
1359         return data->slave_data[slave].phy_addr;
1360 }
1361
1362 static const struct udevice_id cpsw_eth_ids[] = {
1363         { .compatible = "ti,cpsw" },
1364         { .compatible = "ti,am335x-cpsw" },
1365         { }
1366 };
1367
1368 U_BOOT_DRIVER(eth_cpsw) = {
1369         .name   = "eth_cpsw",
1370         .id     = UCLASS_ETH,
1371         .of_match = cpsw_eth_ids,
1372         .ofdata_to_platdata = cpsw_eth_ofdata_to_platdata,
1373         .probe  = cpsw_eth_probe,
1374         .ops    = &cpsw_eth_ops,
1375         .priv_auto_alloc_size = sizeof(struct cpsw_priv),
1376         .platdata_auto_alloc_size = sizeof(struct eth_pdata),
1377         .flags = DM_FLAG_ALLOC_PRIV_DMA,
1378 };
1379 #endif /* CONFIG_DM_ETH */