target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/mt7530.c

   1 /*
   2  * This program is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU General Public License
   4  * as published by the Free Software Foundation; either version 2
   5  * of the License, or (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
  13  * Copyright (C) 2016 Vitaly Chekryzhev <13hakta@gmail.com>
  14  */
  15
  16 #include <linux/if.h>
  17 #include <linux/module.h>
  18 #include <linux/init.h>
  19 #include <linux/list.h>
  20 #include <linux/if_ether.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/netdevice.h>
  23 #include <linux/netlink.h>
  24 #include <linux/bitops.h>
  25 #include <net/genetlink.h>
  26 #include <linux/switch.h>
  27 #include <linux/delay.h>
  28 #include <linux/phy.h>
  29 #include <linux/netdevice.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/lockdep.h>
  32 #include <linux/workqueue.h>
  33 #include <linux/of_device.h>
  34
  35 #include "mt7530.h"
  36
  37 #define MT7530_CPU_PORT         6
  38 #define MT7530_NUM_PORTS        8
  39 #ifdef CONFIG_SOC_MT7621
  40 #define MT7530_NUM_VLANS        4095
  41 #else
  42 #define MT7530_NUM_VLANS        16
  43 #endif
  44 #define MT7530_MAX_VID          4095
  45 #define MT7530_MIN_VID          0
  46
  47 #define MT7530_PORT_MIB_TXB_ID  2       /* TxGOC */
  48 #define MT7530_PORT_MIB_RXB_ID  6       /* RxGOC */
  49
  50 #define MT7621_PORT_MIB_TXB_ID  18      /* TxByte */
  51 #define MT7621_PORT_MIB_RXB_ID  37      /* RxByte */
  52
  53 /* registers */
  54 #define REG_ESW_VLAN_VTCR               0x90
  55 #define REG_ESW_VLAN_VAWD1              0x94
  56 #define REG_ESW_VLAN_VAWD2              0x98
  57 #define REG_ESW_VLAN_VTIM(x)    (0x100 + 4 * ((x) / 2))
  58
  59 #define REG_ESW_VLAN_VAWD1_IVL_MAC      BIT(30)
  60 #define REG_ESW_VLAN_VAWD1_VTAG_EN      BIT(28)
  61 #define REG_ESW_VLAN_VAWD1_VALID        BIT(0)
  62
  63 /* vlan egress mode */
  64 enum {
  65         ETAG_CTRL_UNTAG = 0,
  66         ETAG_CTRL_TAG   = 2,
  67         ETAG_CTRL_SWAP  = 1,
  68         ETAG_CTRL_STACK = 3,
  69 };
  70
  71 #define REG_ESW_PORT_PCR(x)     (0x2004 | ((x) << 8))
  72 #define REG_ESW_PORT_PVC(x)     (0x2010 | ((x) << 8))
  73 #define REG_ESW_PORT_PPBV1(x)   (0x2014 | ((x) << 8))
  74
  75 #define REG_HWTRAP              0x7804
  76
  77 #define MIB_DESC(_s , _o, _n)   \
  78         {                       \
  79                 .size = (_s),   \
  80                 .offset = (_o), \
  81                 .name = (_n),   \
  82         }
  83
  84 struct mt7xxx_mib_desc {
  85         unsigned int size;
  86         unsigned int offset;
  87         const char *name;
  88 };
  89
  90 static const struct mt7xxx_mib_desc mt7620_mibs[] = {
  91         MIB_DESC(1, MT7620_MIB_STATS_PPE_AC_BCNT0, "PPE_AC_BCNT0"),
  92         MIB_DESC(1, MT7620_MIB_STATS_PPE_AC_PCNT0, "PPE_AC_PCNT0"),
  93         MIB_DESC(1, MT7620_MIB_STATS_PPE_AC_BCNT63, "PPE_AC_BCNT63"),
  94         MIB_DESC(1, MT7620_MIB_STATS_PPE_AC_PCNT63, "PPE_AC_PCNT63"),
  95         MIB_DESC(1, MT7620_MIB_STATS_PPE_MTR_CNT0, "PPE_MTR_CNT0"),
  96         MIB_DESC(1, MT7620_MIB_STATS_PPE_MTR_CNT63, "PPE_MTR_CNT63"),
  97         MIB_DESC(1, MT7620_MIB_STATS_GDM1_TX_GBCNT, "GDM1_TX_GBCNT"),
  98         MIB_DESC(1, MT7620_MIB_STATS_GDM1_TX_GPCNT, "GDM1_TX_GPCNT"),
  99         MIB_DESC(1, MT7620_MIB_STATS_GDM1_TX_SKIPCNT, "GDM1_TX_SKIPCNT"),
 100         MIB_DESC(1, MT7620_MIB_STATS_GDM1_TX_COLCNT, "GDM1_TX_COLCNT"),
 101         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_GBCNT1, "GDM1_RX_GBCNT1"),
 102         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_GPCNT1, "GDM1_RX_GPCNT1"),
 103         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_OERCNT, "GDM1_RX_OERCNT"),
 104         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_FERCNT, "GDM1_RX_FERCNT"),
 105         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_SERCNT, "GDM1_RX_SERCNT"),
 106         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_LERCNT, "GDM1_RX_LERCNT"),
 107         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_CERCNT, "GDM1_RX_CERCNT"),
 108         MIB_DESC(1, MT7620_MIB_STATS_GDM1_RX_FCCNT, "GDM1_RX_FCCNT"),
 109         MIB_DESC(1, MT7620_MIB_STATS_GDM2_TX_GBCNT, "GDM2_TX_GBCNT"),
 110         MIB_DESC(1, MT7620_MIB_STATS_GDM2_TX_GPCNT, "GDM2_TX_GPCNT"),
 111         MIB_DESC(1, MT7620_MIB_STATS_GDM2_TX_SKIPCNT, "GDM2_TX_SKIPCNT"),
 112         MIB_DESC(1, MT7620_MIB_STATS_GDM2_TX_COLCNT, "GDM2_TX_COLCNT"),
 113         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_GBCNT, "GDM2_RX_GBCNT"),
 114         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_GPCNT, "GDM2_RX_GPCNT"),
 115         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_OERCNT, "GDM2_RX_OERCNT"),
 116         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_FERCNT, "GDM2_RX_FERCNT"),
 117         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_SERCNT, "GDM2_RX_SERCNT"),
 118         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_LERCNT, "GDM2_RX_LERCNT"),
 119         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_CERCNT, "GDM2_RX_CERCNT"),
 120         MIB_DESC(1, MT7620_MIB_STATS_GDM2_RX_FCCNT, "GDM2_RX_FCCNT")
 121 };
 122
 123 static const struct mt7xxx_mib_desc mt7620_port_mibs[] = {
 124         MIB_DESC(1, MT7620_MIB_STATS_PORT_TGPCN,  "TxGPC"),
 125         MIB_DESC(1, MT7620_MIB_STATS_PORT_TBOCN,  "TxBOC"),
 126         MIB_DESC(1, MT7620_MIB_STATS_PORT_TGOCN,  "TxGOC"),
 127         MIB_DESC(1, MT7620_MIB_STATS_PORT_TEPCN,  "TxEPC"),
 128         MIB_DESC(1, MT7620_MIB_STATS_PORT_RGPCN,  "RxGPC"),
 129         MIB_DESC(1, MT7620_MIB_STATS_PORT_RBOCN,  "RxBOC"),
 130         MIB_DESC(1, MT7620_MIB_STATS_PORT_RGOCN,  "RxGOC"),
 131         MIB_DESC(1, MT7620_MIB_STATS_PORT_REPC1N, "RxEPC1"),
 132         MIB_DESC(1, MT7620_MIB_STATS_PORT_REPC2N, "RxEPC2")
 133 };
 134
 135 static const struct mt7xxx_mib_desc mt7621_mibs[] = {
 136         MIB_DESC(1, MT7621_STATS_TDPC, "TxDrop"),
 137         MIB_DESC(1, MT7621_STATS_TCRC, "TxCRC"),
 138         MIB_DESC(1, MT7621_STATS_TUPC, "TxUni"),
 139         MIB_DESC(1, MT7621_STATS_TMPC, "TxMulti"),
 140         MIB_DESC(1, MT7621_STATS_TBPC, "TxBroad"),
 141         MIB_DESC(1, MT7621_STATS_TCEC, "TxCollision"),
 142         MIB_DESC(1, MT7621_STATS_TSCEC, "TxSingleCol"),
 143         MIB_DESC(1, MT7621_STATS_TMCEC, "TxMultiCol"),
 144         MIB_DESC(1, MT7621_STATS_TDEC, "TxDefer"),
 145         MIB_DESC(1, MT7621_STATS_TLCEC, "TxLateCol"),
 146         MIB_DESC(1, MT7621_STATS_TXCEC, "TxExcCol"),
 147         MIB_DESC(1, MT7621_STATS_TPPC, "TxPause"),
 148         MIB_DESC(1, MT7621_STATS_TL64PC, "Tx64Byte"),
 149         MIB_DESC(1, MT7621_STATS_TL65PC, "Tx65Byte"),
 150         MIB_DESC(1, MT7621_STATS_TL128PC, "Tx128Byte"),
 151         MIB_DESC(1, MT7621_STATS_TL256PC, "Tx256Byte"),
 152         MIB_DESC(1, MT7621_STATS_TL512PC, "Tx512Byte"),
 153         MIB_DESC(1, MT7621_STATS_TL1024PC, "Tx1024Byte"),
 154         MIB_DESC(2, MT7621_STATS_TOC, "TxByte"),
 155         MIB_DESC(1, MT7621_STATS_RDPC, "RxDrop"),
 156         MIB_DESC(1, MT7621_STATS_RFPC, "RxFiltered"),
 157         MIB_DESC(1, MT7621_STATS_RUPC, "RxUni"),
 158         MIB_DESC(1, MT7621_STATS_RMPC, "RxMulti"),
 159         MIB_DESC(1, MT7621_STATS_RBPC, "RxBroad"),
 160         MIB_DESC(1, MT7621_STATS_RAEPC, "RxAlignErr"),
 161         MIB_DESC(1, MT7621_STATS_RCEPC, "RxCRC"),
 162         MIB_DESC(1, MT7621_STATS_RUSPC, "RxUnderSize"),
 163         MIB_DESC(1, MT7621_STATS_RFEPC, "RxFragment"),
 164         MIB_DESC(1, MT7621_STATS_ROSPC, "RxOverSize"),
 165         MIB_DESC(1, MT7621_STATS_RJEPC, "RxJabber"),
 166         MIB_DESC(1, MT7621_STATS_RPPC, "RxPause"),
 167         MIB_DESC(1, MT7621_STATS_RL64PC, "Rx64Byte"),
 168         MIB_DESC(1, MT7621_STATS_RL65PC, "Rx65Byte"),
 169         MIB_DESC(1, MT7621_STATS_RL128PC, "Rx128Byte"),
 170         MIB_DESC(1, MT7621_STATS_RL256PC, "Rx256Byte"),
 171         MIB_DESC(1, MT7621_STATS_RL512PC, "Rx512Byte"),
 172         MIB_DESC(1, MT7621_STATS_RL1024PC, "Rx1024Byte"),
 173         MIB_DESC(2, MT7621_STATS_ROC, "RxByte"),
 174         MIB_DESC(1, MT7621_STATS_RDPC_CTRL, "RxCtrlDrop"),
 175         MIB_DESC(1, MT7621_STATS_RDPC_ING, "RxIngDrop"),
 176         MIB_DESC(1, MT7621_STATS_RDPC_ARL, "RxARLDrop")
 177 };
 178
 179 enum {
 180         /* Global attributes. */
 181         MT7530_ATTR_ENABLE_VLAN,
 182 };
 183
 184 struct mt7530_port_entry {
 185         u16     pvid;
 186 };
 187
 188 struct mt7530_vlan_entry {
 189         u16     vid;
 190         u8      member;
 191         u8      etags;
 192 };
 193
 194 struct mt7530_priv {
 195         void __iomem            *base;
 196         struct mii_bus          *bus;
 197         struct switch_dev       swdev;
 198
 199         bool                    global_vlan_enable;
 200         struct mt7530_vlan_entry        vlan_entries[MT7530_NUM_VLANS];
 201         struct mt7530_port_entry        port_entries[MT7530_NUM_PORTS];
 202 };
 203
 204 struct mt7530_mapping {
 205         char    *name;
 206         u16     pvids[MT7530_NUM_PORTS];
 207         u8      members[MT7530_NUM_VLANS];
 208         u8      etags[MT7530_NUM_VLANS];
 209         u16     vids[MT7530_NUM_VLANS];
 210 } mt7530_defaults[] = {
 211         {
 212                 .name = "llllw",
 213                 .pvids = { 1, 1, 1, 1, 2, 1, 1 },
 214                 .members = { 0, 0x6f, 0x50 },
 215                 .etags = { 0, 0x40, 0x40 },
 216                 .vids = { 0, 1, 2 },
 217         }, {
 218                 .name = "wllll",
 219                 .pvids = { 2, 1, 1, 1, 1, 1, 1 },
 220                 .members = { 0, 0x7e, 0x41 },
 221                 .etags = { 0, 0x40, 0x40 },
 222                 .vids = { 0, 1, 2 },
 223         }, {
 224                 .name = "lwlll",
 225                 .pvids = { 1, 2, 1, 1, 1, 1, 1 },
 226                 .members = { 0, 0x7d, 0x42 },
 227                 .etags = { 0, 0x40, 0x40 },
 228                 .vids = { 0, 1, 2 },
 229         },
 230 };
 231
 232 struct mt7530_mapping*
 233 mt7530_find_mapping(struct device_node *np)
 234 {
 235         const char *map;
 236         int i;
 237
 238         if (of_property_read_string(np, "mediatek,portmap", &map))
 239                 return NULL;
 240
 241         for (i = 0; i < ARRAY_SIZE(mt7530_defaults); i++)
 242                 if (!strcmp(map, mt7530_defaults[i].name))
 243                         return &mt7530_defaults[i];
 244
 245         return NULL;
 246 }
 247
 248 static void
 249 mt7530_apply_mapping(struct mt7530_priv *mt7530, struct mt7530_mapping *map)
 250 {
 251         int i = 0;
 252
 253         for (i = 0; i < MT7530_NUM_PORTS; i++)
 254                 mt7530->port_entries[i].pvid = map->pvids[i];
 255
 256         for (i = 0; i < MT7530_NUM_VLANS; i++) {
 257                 mt7530->vlan_entries[i].member = map->members[i];
 258                 mt7530->vlan_entries[i].etags = map->etags[i];
 259                 mt7530->vlan_entries[i].vid = map->vids[i];
 260         }
 261 }
 262
 263 static int
 264 mt7530_reset_switch(struct switch_dev *dev)
 265 {
 266         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 267         int i;
 268
 269         memset(priv->port_entries, 0, sizeof(priv->port_entries));
 270         memset(priv->vlan_entries, 0, sizeof(priv->vlan_entries));
 271
 272         /* set default vid of each vlan to the same number of vlan, so the vid
 273          * won't need be set explicitly.
 274          */
 275         for (i = 0; i < MT7530_NUM_VLANS; i++) {
 276                 priv->vlan_entries[i].vid = i;
 277         }
 278
 279         return 0;
 280 }
 281
 282 static int
 283 mt7530_get_vlan_enable(struct switch_dev *dev,
 284                            const struct switch_attr *attr,
 285                            struct switch_val *val)
 286 {
 287         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 288
 289         val->value.i = priv->global_vlan_enable;
 290
 291         return 0;
 292 }
 293
 294 static int
 295 mt7530_set_vlan_enable(struct switch_dev *dev,
 296                            const struct switch_attr *attr,
 297                            struct switch_val *val)
 298 {
 299         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 300
 301         priv->global_vlan_enable = val->value.i != 0;
 302
 303         return 0;
 304 }
 305
 306 static u32
 307 mt7530_r32(struct mt7530_priv *priv, u32 reg)
 308 {
 309         u32 val;
 310         if (priv->bus) {
 311                 u16 high, low;
 312
 313                 mdiobus_write(priv->bus, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
 314                 low = mdiobus_read(priv->bus, 0x1f, (reg >> 2) & 0xf);
 315                 high = mdiobus_read(priv->bus, 0x1f, 0x10);
 316
 317                 return (high << 16) | (low & 0xffff);
 318         }
 319
 320         val = ioread32(priv->base + reg);
 321         pr_debug("MT7530 MDIO Read [%04x]=%08x\n", reg, val);
 322
 323         return val;
 324 }
 325
 326 static void
 327 mt7530_w32(struct mt7530_priv *priv, u32 reg, u32 val)
 328 {
 329         if (priv->bus) {
 330                 mdiobus_write(priv->bus, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
 331                 mdiobus_write(priv->bus, 0x1f, (reg >> 2) & 0xf,  val & 0xffff);
 332                 mdiobus_write(priv->bus, 0x1f, 0x10, val >> 16);
 333                 return;
 334         }
 335
 336         pr_debug("MT7530 MDIO Write[%04x]=%08x\n", reg, val);
 337         iowrite32(val, priv->base + reg);
 338 }
 339
 340 static void
 341 mt7530_vtcr(struct mt7530_priv *priv, u32 cmd, u32 val)
 342 {
 343         int i;
 344
 345         mt7530_w32(priv, REG_ESW_VLAN_VTCR, BIT(31) | (cmd << 12) | val);
 346
 347         for (i = 0; i < 20; i++) {
 348                 u32 val = mt7530_r32(priv, REG_ESW_VLAN_VTCR);
 349
 350                 if ((val & BIT(31)) == 0)
 351                         break;
 352
 353                 udelay(1000);
 354         }
 355         if (i == 20)
 356                 printk("mt7530: vtcr timeout\n");
 357 }
 358
 359 static int
 360 mt7530_get_port_pvid(struct switch_dev *dev, int port, int *val)
 361 {
 362         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 363
 364         if (port >= MT7530_NUM_PORTS)
 365                 return -EINVAL;
 366
 367         *val = mt7530_r32(priv, REG_ESW_PORT_PPBV1(port));
 368         *val &= 0xfff;
 369
 370         return 0;
 371 }
 372
 373 static int
 374 mt7530_set_port_pvid(struct switch_dev *dev, int port, int pvid)
 375 {
 376         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 377
 378         if (port >= MT7530_NUM_PORTS)
 379                 return -EINVAL;
 380
 381         if (pvid < MT7530_MIN_VID || pvid > MT7530_MAX_VID)
 382                 return -EINVAL;
 383
 384         priv->port_entries[port].pvid = pvid;
 385
 386         return 0;
 387 }
 388
 389 static int
 390 mt7530_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
 391 {
 392         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 393         u32 member;
 394         u32 etags;
 395         int i;
 396
 397         val->len = 0;
 398
 399         if (val->port_vlan < 0 || val->port_vlan >= MT7530_NUM_VLANS)
 400                 return -EINVAL;
 401
 402         mt7530_vtcr(priv, 0, val->port_vlan);
 403
 404         member = mt7530_r32(priv, REG_ESW_VLAN_VAWD1);
 405         member >>= 16;
 406         member &= 0xff;
 407
 408         etags = mt7530_r32(priv, REG_ESW_VLAN_VAWD2);
 409
 410         for (i = 0; i < MT7530_NUM_PORTS; i++) {
 411                 struct switch_port *p;
 412                 int etag;
 413
 414                 if (!(member & BIT(i)))
 415                         continue;
 416
 417                 p = &val->value.ports[val->len++];
 418                 p->id = i;
 419
 420                 etag = (etags >> (i * 2)) & 0x3;
 421
 422                 if (etag == ETAG_CTRL_TAG)
 423                         p->flags |= BIT(SWITCH_PORT_FLAG_TAGGED);
 424                 else if (etag != ETAG_CTRL_UNTAG)
 425                         printk("vlan egress tag control neither untag nor tag.\n");
 426         }
 427
 428         return 0;
 429 }
 430
 431 static int
 432 mt7530_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
 433 {
 434         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 435         u8 member = 0;
 436         u8 etags = 0;
 437         int i;
 438
 439         if (val->port_vlan < 0 || val->port_vlan >= MT7530_NUM_VLANS ||
 440                         val->len > MT7530_NUM_PORTS)
 441                 return -EINVAL;
 442
 443         for (i = 0; i < val->len; i++) {
 444                 struct switch_port *p = &val->value.ports[i];
 445
 446                 if (p->id >= MT7530_NUM_PORTS)
 447                         return -EINVAL;
 448
 449                 member |= BIT(p->id);
 450
 451                 if (p->flags & BIT(SWITCH_PORT_FLAG_TAGGED))
 452                         etags |= BIT(p->id);
 453         }
 454         priv->vlan_entries[val->port_vlan].member = member;
 455         priv->vlan_entries[val->port_vlan].etags = etags;
 456
 457         return 0;
 458 }
 459
 460 static int
 461 mt7530_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
 462                 struct switch_val *val)
 463 {
 464         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 465         int vlan;
 466         u16 vid;
 467
 468         vlan = val->port_vlan;
 469         vid = (u16)val->value.i;
 470
 471         if (vlan < 0 || vlan >= MT7530_NUM_VLANS)
 472                 return -EINVAL;
 473
 474         if (vid < MT7530_MIN_VID || vid > MT7530_MAX_VID)
 475                 return -EINVAL;
 476
 477         priv->vlan_entries[vlan].vid = vid;
 478         return 0;
 479 }
 480
 481 static int
 482 mt7621_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
 483                 struct switch_val *val)
 484 {
 485         val->value.i = val->port_vlan;
 486         return 0;
 487 }
 488
 489 static int
 490 mt7530_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
 491                 struct switch_val *val)
 492 {
 493         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 494         u32 vid;
 495         int vlan;
 496
 497         vlan = val->port_vlan;
 498
 499         vid = mt7530_r32(priv, REG_ESW_VLAN_VTIM(vlan));
 500         if (vlan & 1)
 501                 vid = vid >> 12;
 502         vid &= 0xfff;
 503
 504         val->value.i = vid;
 505         return 0;
 506 }
 507
 508 static void
 509 mt7530_write_vlan_entry(struct mt7530_priv *priv, int vlan, u16 vid,
 510                             u8 ports, u8 etags)
 511 {
 512         int port;
 513         u32 val;
 514
 515 #ifndef CONFIG_SOC_MT7621
 516         /* vid of vlan */
 517         val = mt7530_r32(priv, REG_ESW_VLAN_VTIM(vlan));
 518         if (vlan % 2 == 0) {
 519                 val &= 0xfff000;
 520                 val |= vid;
 521         } else {
 522                 val &= 0xfff;
 523                 val |= (vid << 12);
 524         }
 525         mt7530_w32(priv, REG_ESW_VLAN_VTIM(vlan), val);
 526 #endif
 527
 528         /* vlan port membership */
 529         if (ports)
 530                 mt7530_w32(priv, REG_ESW_VLAN_VAWD1, REG_ESW_VLAN_VAWD1_IVL_MAC |
 531                         REG_ESW_VLAN_VAWD1_VTAG_EN | (ports << 16) |
 532                         REG_ESW_VLAN_VAWD1_VALID);
 533         else
 534                 mt7530_w32(priv, REG_ESW_VLAN_VAWD1, 0);
 535
 536         /* egress mode */
 537         val = 0;
 538         for (port = 0; port < MT7530_NUM_PORTS; port++) {
 539                 if (etags & BIT(port))
 540                         val |= ETAG_CTRL_TAG << (port * 2);
 541                 else
 542                         val |= ETAG_CTRL_UNTAG << (port * 2);
 543         }
 544         mt7530_w32(priv, REG_ESW_VLAN_VAWD2, val);
 545
 546         /* write to vlan table */
 547 #ifdef CONFIG_SOC_MT7621
 548         mt7530_vtcr(priv, 1, vid);
 549 #else
 550         mt7530_vtcr(priv, 1, vlan);
 551 #endif
 552 }
 553
 554 static int
 555 mt7530_apply_config(struct switch_dev *dev)
 556 {
 557         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 558         int i, j;
 559         u8 tag_ports;
 560         u8 untag_ports;
 561
 562         if (!priv->global_vlan_enable) {
 563                 for (i = 0; i < MT7530_NUM_PORTS; i++)
 564                         mt7530_w32(priv, REG_ESW_PORT_PCR(i), 0x00400000);
 565
 566                 mt7530_w32(priv, REG_ESW_PORT_PCR(MT7530_CPU_PORT), 0x00ff0000);
 567
 568                 for (i = 0; i < MT7530_NUM_PORTS; i++)
 569                         mt7530_w32(priv, REG_ESW_PORT_PVC(i), 0x810000c0);
 570
 571                 return 0;
 572         }
 573
 574         /* set all ports as security mode */
 575         for (i = 0; i < MT7530_NUM_PORTS; i++)
 576                 mt7530_w32(priv, REG_ESW_PORT_PCR(i), 0x00ff0003);
 577
 578         /* check if a port is used in tag/untag vlan egress mode */
 579         tag_ports = 0;
 580         untag_ports = 0;
 581
 582         for (i = 0; i < MT7530_NUM_VLANS; i++) {
 583                 u8 member = priv->vlan_entries[i].member;
 584                 u8 etags = priv->vlan_entries[i].etags;
 585
 586                 if (!member)
 587                         continue;
 588
 589                 for (j = 0; j < MT7530_NUM_PORTS; j++) {
 590                         if (!(member & BIT(j)))
 591                                 continue;
 592
 593                         if (etags & BIT(j))
 594                                 tag_ports |= 1u << j;
 595                         else
 596                                 untag_ports |= 1u << j;
 597                 }
 598         }
 599
 600         /* set all untag-only ports as transparent and the rest as user port */
 601         for (i = 0; i < MT7530_NUM_PORTS; i++) {
 602                 u32 pvc_mode = 0x81000000;
 603
 604                 if (untag_ports & BIT(i) && !(tag_ports & BIT(i)))
 605                         pvc_mode = 0x810000c0;
 606
 607                 mt7530_w32(priv, REG_ESW_PORT_PVC(i), pvc_mode);
 608         }
 609
 610         /* first clear the swtich vlan table */
 611         for (i = 0; i < MT7530_NUM_VLANS; i++)
 612                 mt7530_write_vlan_entry(priv, i, i, 0, 0);
 613
 614         /* now program only vlans with members to avoid
 615            clobbering remapped entries in later iterations */
 616         for (i = 0; i < MT7530_NUM_VLANS; i++) {
 617                 u16 vid = priv->vlan_entries[i].vid;
 618                 u8 member = priv->vlan_entries[i].member;
 619                 u8 etags = priv->vlan_entries[i].etags;
 620
 621                 if (member)
 622                         mt7530_write_vlan_entry(priv, i, vid, member, etags);
 623         }
 624
 625         /* Port Default PVID */
 626         for (i = 0; i < MT7530_NUM_PORTS; i++) {
 627                 int vlan = priv->port_entries[i].pvid;
 628                 u16 pvid = 0;
 629                 u32 val;
 630
 631                 if (vlan < MT7530_NUM_VLANS && priv->vlan_entries[vlan].member)
 632                         pvid = priv->vlan_entries[vlan].vid;
 633
 634                 val = mt7530_r32(priv, REG_ESW_PORT_PPBV1(i));
 635                 val &= ~0xfff;
 636                 val |= pvid;
 637                 mt7530_w32(priv, REG_ESW_PORT_PPBV1(i), val);
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int
 644 mt7530_get_port_link(struct switch_dev *dev,  int port,
 645                         struct switch_port_link *link)
 646 {
 647         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 648         u32 speed, pmsr;
 649
 650         if (port < 0 || port >= MT7530_NUM_PORTS)
 651                 return -EINVAL;
 652
 653         pmsr = mt7530_r32(priv, 0x3008 + (0x100 * port));
 654
 655         link->link = pmsr & 1;
 656         link->duplex = (pmsr >> 1) & 1;
 657         speed = (pmsr >> 2) & 3;
 658
 659         switch (speed) {
 660         case 0:
 661                 link->speed = SWITCH_PORT_SPEED_10;
 662                 break;
 663         case 1:
 664                 link->speed = SWITCH_PORT_SPEED_100;
 665                 break;
 666         case 2:
 667         case 3: /* forced gige speed can be 2 or 3 */
 668                 link->speed = SWITCH_PORT_SPEED_1000;
 669                 break;
 670         default:
 671                 link->speed = SWITCH_PORT_SPEED_UNKNOWN;
 672                 break;
 673         }
 674
 675         return 0;
 676 }
 677
 678 static u64 get_mib_counter(struct mt7530_priv *priv, int i, int port)
 679 {
 680         unsigned int port_base;
 681         u64 lo;
 682
 683         port_base = MT7621_MIB_COUNTER_BASE +
 684                     MT7621_MIB_COUNTER_PORT_OFFSET * port;
 685
 686         lo = mt7530_r32(priv, port_base + mt7621_mibs[i].offset);
 687         if (mt7621_mibs[i].size == 2) {
 688                 u64 hi;
 689
 690                 hi = mt7530_r32(priv, port_base + mt7621_mibs[i].offset + 4);
 691                 lo |= hi << 32;
 692         }
 693
 694         return lo;
 695 }
 696
 697 static int mt7621_sw_get_port_mib(struct switch_dev *dev,
 698                                   const struct switch_attr *attr,
 699                                   struct switch_val *val)
 700 {
 701         static char buf[4096];
 702         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 703         int i, len = 0;
 704
 705         if (val->port_vlan >= MT7530_NUM_PORTS)
 706                 return -EINVAL;
 707
 708         len += snprintf(buf + len, sizeof(buf) - len,
 709                         "Port %d MIB counters\n", val->port_vlan);
 710
 711         for (i = 0; i < ARRAY_SIZE(mt7621_mibs); ++i) {
 712                 u64 counter;
 713                 len += snprintf(buf + len, sizeof(buf) - len,
 714                                 "%-11s: ", mt7621_mibs[i].name);
 715                 counter = get_mib_counter(priv, i, val->port_vlan);
 716                 len += snprintf(buf + len, sizeof(buf) - len, "%llu\n",
 717                                 counter);
 718         }
 719
 720         val->value.s = buf;
 721         val->len = len;
 722         return 0;
 723 }
 724
 725 static u64 get_mib_counter_7620(struct mt7530_priv *priv, int i)
 726 {
 727         return mt7530_r32(priv, MT7620_MIB_COUNTER_BASE + mt7620_mibs[i].offset);
 728 }
 729
 730 static u64 get_mib_counter_port_7620(struct mt7530_priv *priv, int i, int port)
 731 {
 732         return mt7530_r32(priv,
 733                         MT7620_MIB_COUNTER_BASE_PORT +
 734                         (MT7620_MIB_COUNTER_PORT_OFFSET * port) +
 735                         mt7620_port_mibs[i].offset);
 736 }
 737
 738 static int mt7530_sw_get_mib(struct switch_dev *dev,
 739                                   const struct switch_attr *attr,
 740                                   struct switch_val *val)
 741 {
 742         static char buf[4096];
 743         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 744         int i, len = 0;
 745
 746         len += snprintf(buf + len, sizeof(buf) - len, "Switch MIB counters\n");
 747
 748         for (i = 0; i < ARRAY_SIZE(mt7620_mibs); ++i) {
 749                 u64 counter;
 750                 len += snprintf(buf + len, sizeof(buf) - len,
 751                                 "%-11s: ", mt7620_mibs[i].name);
 752                 counter = get_mib_counter_7620(priv, i);
 753                 len += snprintf(buf + len, sizeof(buf) - len, "%llu\n",
 754                                 counter);
 755         }
 756
 757         val->value.s = buf;
 758         val->len = len;
 759         return 0;
 760 }
 761
 762 static int mt7530_sw_get_port_mib(struct switch_dev *dev,
 763                                   const struct switch_attr *attr,
 764                                   struct switch_val *val)
 765 {
 766         static char buf[4096];
 767         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 768         int i, len = 0;
 769
 770         if (val->port_vlan >= MT7530_NUM_PORTS)
 771                 return -EINVAL;
 772
 773         len += snprintf(buf + len, sizeof(buf) - len,
 774                         "Port %d MIB counters\n", val->port_vlan);
 775
 776         for (i = 0; i < ARRAY_SIZE(mt7620_port_mibs); ++i) {
 777                 u64 counter;
 778                 len += snprintf(buf + len, sizeof(buf) - len,
 779                                 "%-11s: ", mt7620_port_mibs[i].name);
 780                 counter = get_mib_counter_port_7620(priv, i, val->port_vlan);
 781                 len += snprintf(buf + len, sizeof(buf) - len, "%llu\n",
 782                                 counter);
 783         }
 784
 785         val->value.s = buf;
 786         val->len = len;
 787         return 0;
 788 }
 789
 790 static int mt7530_get_port_stats(struct switch_dev *dev, int port,
 791                                         struct switch_port_stats *stats)
 792 {
 793         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 794
 795         if (port < 0 || port >= MT7530_NUM_PORTS)
 796                 return -EINVAL;
 797
 798         stats->tx_bytes = get_mib_counter_port_7620(priv, MT7530_PORT_MIB_TXB_ID, port);
 799         stats->rx_bytes = get_mib_counter_port_7620(priv, MT7530_PORT_MIB_RXB_ID, port);
 800
 801         return 0;
 802 }
 803
 804 static int mt7621_get_port_stats(struct switch_dev *dev, int port,
 805                                         struct switch_port_stats *stats)
 806 {
 807         struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
 808
 809         if (port < 0 || port >= MT7530_NUM_PORTS)
 810                 return -EINVAL;
 811
 812         stats->tx_bytes = get_mib_counter(priv, MT7621_PORT_MIB_TXB_ID, port);
 813         stats->rx_bytes = get_mib_counter(priv, MT7621_PORT_MIB_RXB_ID, port);
 814
 815         return 0;
 816 }
 817
 818 static const struct switch_attr mt7530_global[] = {
 819         {
 820                 .type = SWITCH_TYPE_INT,
 821                 .name = "enable_vlan",
 822                 .description = "VLAN mode (1:enabled)",
 823                 .max = 1,
 824                 .id = MT7530_ATTR_ENABLE_VLAN,
 825                 .get = mt7530_get_vlan_enable,
 826                 .set = mt7530_set_vlan_enable,
 827         }, {
 828                 .type = SWITCH_TYPE_STRING,
 829                 .name = "mib",
 830                 .description = "Get MIB counters for switch",
 831                 .get = mt7530_sw_get_mib,
 832                 .set = NULL,
 833         },
 834 };
 835
 836 static const struct switch_attr mt7621_port[] = {
 837         {
 838                 .type = SWITCH_TYPE_STRING,
 839                 .name = "mib",
 840                 .description = "Get MIB counters for port",
 841                 .get = mt7621_sw_get_port_mib,
 842                 .set = NULL,
 843         },
 844 };
 845
 846 static const struct switch_attr mt7621_vlan[] = {
 847         {
 848                 .type = SWITCH_TYPE_INT,
 849                 .name = "vid",
 850                 .description = "VLAN ID (0-4094)",
 851                 .set = mt7530_set_vid,
 852                 .get = mt7621_get_vid,
 853                 .max = 4094,
 854         },
 855 };
 856
 857 static const struct switch_attr mt7530_port[] = {
 858         {
 859                 .type = SWITCH_TYPE_STRING,
 860                 .name = "mib",
 861                 .description = "Get MIB counters for port",
 862                 .get = mt7530_sw_get_port_mib,
 863                 .set = NULL,
 864         },
 865 };
 866
 867 static const struct switch_attr mt7530_vlan[] = {
 868         {
 869                 .type = SWITCH_TYPE_INT,
 870                 .name = "vid",
 871                 .description = "VLAN ID (0-4094)",
 872                 .set = mt7530_set_vid,
 873                 .get = mt7530_get_vid,
 874                 .max = 4094,
 875         },
 876 };
 877
 878 static const struct switch_dev_ops mt7621_ops = {
 879         .attr_global = {
 880                 .attr = mt7530_global,
 881                 .n_attr = ARRAY_SIZE(mt7530_global),
 882         },
 883         .attr_port = {
 884                 .attr = mt7621_port,
 885                 .n_attr = ARRAY_SIZE(mt7621_port),
 886         },
 887         .attr_vlan = {
 888                 .attr = mt7621_vlan,
 889                 .n_attr = ARRAY_SIZE(mt7621_vlan),
 890         },
 891         .get_vlan_ports = mt7530_get_vlan_ports,
 892         .set_vlan_ports = mt7530_set_vlan_ports,
 893         .get_port_pvid = mt7530_get_port_pvid,
 894         .set_port_pvid = mt7530_set_port_pvid,
 895         .get_port_link = mt7530_get_port_link,
 896         .get_port_stats = mt7621_get_port_stats,
 897         .apply_config = mt7530_apply_config,
 898         .reset_switch = mt7530_reset_switch,
 899 };
 900
 901 static const struct switch_dev_ops mt7530_ops = {
 902         .attr_global = {
 903                 .attr = mt7530_global,
 904                 .n_attr = ARRAY_SIZE(mt7530_global),
 905         },
 906         .attr_port = {
 907                 .attr = mt7530_port,
 908                 .n_attr = ARRAY_SIZE(mt7530_port),
 909         },
 910         .attr_vlan = {
 911                 .attr = mt7530_vlan,
 912                 .n_attr = ARRAY_SIZE(mt7530_vlan),
 913         },
 914         .get_vlan_ports = mt7530_get_vlan_ports,
 915         .set_vlan_ports = mt7530_set_vlan_ports,
 916         .get_port_pvid = mt7530_get_port_pvid,
 917         .set_port_pvid = mt7530_set_port_pvid,
 918         .get_port_link = mt7530_get_port_link,
 919         .get_port_stats = mt7530_get_port_stats,
 920         .apply_config = mt7530_apply_config,
 921         .reset_switch = mt7530_reset_switch,
 922 };
 923
 924 int
 925 mt7530_probe(struct device *dev, void __iomem *base, struct mii_bus *bus, int vlan)
 926 {
 927         struct switch_dev *swdev;
 928         struct mt7530_priv *mt7530;
 929         struct mt7530_mapping *map;
 930         int ret;
 931
 932         mt7530 = devm_kzalloc(dev, sizeof(struct mt7530_priv), GFP_KERNEL);
 933         if (!mt7530)
 934                 return -ENOMEM;
 935
 936         mt7530->base = base;
 937         mt7530->bus = bus;
 938         mt7530->global_vlan_enable = vlan;
 939
 940         swdev = &mt7530->swdev;
 941         if (bus) {
 942                 swdev->alias = "mt7530";
 943                 swdev->name = "mt7530";
 944         } else if (IS_ENABLED(CONFIG_SOC_MT7621)) {
 945                 swdev->alias = "mt7621";
 946                 swdev->name = "mt7621";
 947         } else {
 948                 swdev->alias = "mt7620";
 949                 swdev->name = "mt7620";
 950         }
 951         swdev->cpu_port = MT7530_CPU_PORT;
 952         swdev->ports = MT7530_NUM_PORTS;
 953         swdev->vlans = MT7530_NUM_VLANS;
 954         if (IS_ENABLED(CONFIG_SOC_MT7621))
 955                 swdev->ops = &mt7621_ops;
 956         else
 957                 swdev->ops = &mt7530_ops;
 958
 959         ret = register_switch(swdev, NULL);
 960         if (ret) {
 961                 dev_err(dev, "failed to register mt7530\n");
 962                 return ret;
 963         }
 964
 965
 966         map = mt7530_find_mapping(dev->of_node);
 967         if (map)
 968                 mt7530_apply_mapping(mt7530, map);
 969         mt7530_apply_config(swdev);
 970
 971         /* magic vodoo */
 972         if (!IS_ENABLED(CONFIG_SOC_MT7621) && bus && mt7530_r32(mt7530, REG_HWTRAP) !=  0x1117edf) {
 973                 dev_info(dev, "fixing up MHWTRAP register - bootloader probably played with it\n");
 974                 mt7530_w32(mt7530, REG_HWTRAP, 0x1117edf);
 975         }
 976         dev_info(dev, "loaded %s driver\n", swdev->name);
 977
 978         return 0;
 979 }