drivers/net/dsa/b53/b53_common.c

   1 /*
   2  * B53 switch driver main logic
   3  *
   4  * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org>
   5  * Copyright (C) 2016 Florian Fainelli <f.fainelli@gmail.com>
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 #include <linux/delay.h>
  21 #include <linux/export.h>
  22 #include <linux/gpio.h>
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/platform_data/b53.h>
  26 #include <linux/phy.h>
  27 #include <linux/phylink.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/if_bridge.h>
  30 #include <net/dsa.h>
  31
  32 #include "b53_regs.h"
  33 #include "b53_priv.h"
  34
  35 struct b53_mib_desc {
  36         u8 size;
  37         u8 offset;
  38         const char *name;
  39 };
  40
  41 /* BCM5365 MIB counters */
  42 static const struct b53_mib_desc b53_mibs_65[] = {
  43         { 8, 0x00, "TxOctets" },
  44         { 4, 0x08, "TxDropPkts" },
  45         { 4, 0x10, "TxBroadcastPkts" },
  46         { 4, 0x14, "TxMulticastPkts" },
  47         { 4, 0x18, "TxUnicastPkts" },
  48         { 4, 0x1c, "TxCollisions" },
  49         { 4, 0x20, "TxSingleCollision" },
  50         { 4, 0x24, "TxMultipleCollision" },
  51         { 4, 0x28, "TxDeferredTransmit" },
  52         { 4, 0x2c, "TxLateCollision" },
  53         { 4, 0x30, "TxExcessiveCollision" },
  54         { 4, 0x38, "TxPausePkts" },
  55         { 8, 0x44, "RxOctets" },
  56         { 4, 0x4c, "RxUndersizePkts" },
  57         { 4, 0x50, "RxPausePkts" },
  58         { 4, 0x54, "Pkts64Octets" },
  59         { 4, 0x58, "Pkts65to127Octets" },
  60         { 4, 0x5c, "Pkts128to255Octets" },
  61         { 4, 0x60, "Pkts256to511Octets" },
  62         { 4, 0x64, "Pkts512to1023Octets" },
  63         { 4, 0x68, "Pkts1024to1522Octets" },
  64         { 4, 0x6c, "RxOversizePkts" },
  65         { 4, 0x70, "RxJabbers" },
  66         { 4, 0x74, "RxAlignmentErrors" },
  67         { 4, 0x78, "RxFCSErrors" },
  68         { 8, 0x7c, "RxGoodOctets" },
  69         { 4, 0x84, "RxDropPkts" },
  70         { 4, 0x88, "RxUnicastPkts" },
  71         { 4, 0x8c, "RxMulticastPkts" },
  72         { 4, 0x90, "RxBroadcastPkts" },
  73         { 4, 0x94, "RxSAChanges" },
  74         { 4, 0x98, "RxFragments" },
  75 };
  76
  77 #define B53_MIBS_65_SIZE        ARRAY_SIZE(b53_mibs_65)
  78
  79 /* BCM63xx MIB counters */
  80 static const struct b53_mib_desc b53_mibs_63xx[] = {
  81         { 8, 0x00, "TxOctets" },
  82         { 4, 0x08, "TxDropPkts" },
  83         { 4, 0x0c, "TxQoSPkts" },
  84         { 4, 0x10, "TxBroadcastPkts" },
  85         { 4, 0x14, "TxMulticastPkts" },
  86         { 4, 0x18, "TxUnicastPkts" },
  87         { 4, 0x1c, "TxCollisions" },
  88         { 4, 0x20, "TxSingleCollision" },
  89         { 4, 0x24, "TxMultipleCollision" },
  90         { 4, 0x28, "TxDeferredTransmit" },
  91         { 4, 0x2c, "TxLateCollision" },
  92         { 4, 0x30, "TxExcessiveCollision" },
  93         { 4, 0x38, "TxPausePkts" },
  94         { 8, 0x3c, "TxQoSOctets" },
  95         { 8, 0x44, "RxOctets" },
  96         { 4, 0x4c, "RxUndersizePkts" },
  97         { 4, 0x50, "RxPausePkts" },
  98         { 4, 0x54, "Pkts64Octets" },
  99         { 4, 0x58, "Pkts65to127Octets" },
 100         { 4, 0x5c, "Pkts128to255Octets" },
 101         { 4, 0x60, "Pkts256to511Octets" },
 102         { 4, 0x64, "Pkts512to1023Octets" },
 103         { 4, 0x68, "Pkts1024to1522Octets" },
 104         { 4, 0x6c, "RxOversizePkts" },
 105         { 4, 0x70, "RxJabbers" },
 106         { 4, 0x74, "RxAlignmentErrors" },
 107         { 4, 0x78, "RxFCSErrors" },
 108         { 8, 0x7c, "RxGoodOctets" },
 109         { 4, 0x84, "RxDropPkts" },
 110         { 4, 0x88, "RxUnicastPkts" },
 111         { 4, 0x8c, "RxMulticastPkts" },
 112         { 4, 0x90, "RxBroadcastPkts" },
 113         { 4, 0x94, "RxSAChanges" },
 114         { 4, 0x98, "RxFragments" },
 115         { 4, 0xa0, "RxSymbolErrors" },
 116         { 4, 0xa4, "RxQoSPkts" },
 117         { 8, 0xa8, "RxQoSOctets" },
 118         { 4, 0xb0, "Pkts1523to2047Octets" },
 119         { 4, 0xb4, "Pkts2048to4095Octets" },
 120         { 4, 0xb8, "Pkts4096to8191Octets" },
 121         { 4, 0xbc, "Pkts8192to9728Octets" },
 122         { 4, 0xc0, "RxDiscarded" },
 123 };
 124
 125 #define B53_MIBS_63XX_SIZE      ARRAY_SIZE(b53_mibs_63xx)
 126
 127 /* MIB counters */
 128 static const struct b53_mib_desc b53_mibs[] = {
 129         { 8, 0x00, "TxOctets" },
 130         { 4, 0x08, "TxDropPkts" },
 131         { 4, 0x10, "TxBroadcastPkts" },
 132         { 4, 0x14, "TxMulticastPkts" },
 133         { 4, 0x18, "TxUnicastPkts" },
 134         { 4, 0x1c, "TxCollisions" },
 135         { 4, 0x20, "TxSingleCollision" },
 136         { 4, 0x24, "TxMultipleCollision" },
 137         { 4, 0x28, "TxDeferredTransmit" },
 138         { 4, 0x2c, "TxLateCollision" },
 139         { 4, 0x30, "TxExcessiveCollision" },
 140         { 4, 0x38, "TxPausePkts" },
 141         { 8, 0x50, "RxOctets" },
 142         { 4, 0x58, "RxUndersizePkts" },
 143         { 4, 0x5c, "RxPausePkts" },
 144         { 4, 0x60, "Pkts64Octets" },
 145         { 4, 0x64, "Pkts65to127Octets" },
 146         { 4, 0x68, "Pkts128to255Octets" },
 147         { 4, 0x6c, "Pkts256to511Octets" },
 148         { 4, 0x70, "Pkts512to1023Octets" },
 149         { 4, 0x74, "Pkts1024to1522Octets" },
 150         { 4, 0x78, "RxOversizePkts" },
 151         { 4, 0x7c, "RxJabbers" },
 152         { 4, 0x80, "RxAlignmentErrors" },
 153         { 4, 0x84, "RxFCSErrors" },
 154         { 8, 0x88, "RxGoodOctets" },
 155         { 4, 0x90, "RxDropPkts" },
 156         { 4, 0x94, "RxUnicastPkts" },
 157         { 4, 0x98, "RxMulticastPkts" },
 158         { 4, 0x9c, "RxBroadcastPkts" },
 159         { 4, 0xa0, "RxSAChanges" },
 160         { 4, 0xa4, "RxFragments" },
 161         { 4, 0xa8, "RxJumboPkts" },
 162         { 4, 0xac, "RxSymbolErrors" },
 163         { 4, 0xc0, "RxDiscarded" },
 164 };
 165
 166 #define B53_MIBS_SIZE   ARRAY_SIZE(b53_mibs)
 167
 168 static const struct b53_mib_desc b53_mibs_58xx[] = {
 169         { 8, 0x00, "TxOctets" },
 170         { 4, 0x08, "TxDropPkts" },
 171         { 4, 0x0c, "TxQPKTQ0" },
 172         { 4, 0x10, "TxBroadcastPkts" },
 173         { 4, 0x14, "TxMulticastPkts" },
 174         { 4, 0x18, "TxUnicastPKts" },
 175         { 4, 0x1c, "TxCollisions" },
 176         { 4, 0x20, "TxSingleCollision" },
 177         { 4, 0x24, "TxMultipleCollision" },
 178         { 4, 0x28, "TxDeferredCollision" },
 179         { 4, 0x2c, "TxLateCollision" },
 180         { 4, 0x30, "TxExcessiveCollision" },
 181         { 4, 0x34, "TxFrameInDisc" },
 182         { 4, 0x38, "TxPausePkts" },
 183         { 4, 0x3c, "TxQPKTQ1" },
 184         { 4, 0x40, "TxQPKTQ2" },
 185         { 4, 0x44, "TxQPKTQ3" },
 186         { 4, 0x48, "TxQPKTQ4" },
 187         { 4, 0x4c, "TxQPKTQ5" },
 188         { 8, 0x50, "RxOctets" },
 189         { 4, 0x58, "RxUndersizePkts" },
 190         { 4, 0x5c, "RxPausePkts" },
 191         { 4, 0x60, "RxPkts64Octets" },
 192         { 4, 0x64, "RxPkts65to127Octets" },
 193         { 4, 0x68, "RxPkts128to255Octets" },
 194         { 4, 0x6c, "RxPkts256to511Octets" },
 195         { 4, 0x70, "RxPkts512to1023Octets" },
 196         { 4, 0x74, "RxPkts1024toMaxPktsOctets" },
 197         { 4, 0x78, "RxOversizePkts" },
 198         { 4, 0x7c, "RxJabbers" },
 199         { 4, 0x80, "RxAlignmentErrors" },
 200         { 4, 0x84, "RxFCSErrors" },
 201         { 8, 0x88, "RxGoodOctets" },
 202         { 4, 0x90, "RxDropPkts" },
 203         { 4, 0x94, "RxUnicastPkts" },
 204         { 4, 0x98, "RxMulticastPkts" },
 205         { 4, 0x9c, "RxBroadcastPkts" },
 206         { 4, 0xa0, "RxSAChanges" },
 207         { 4, 0xa4, "RxFragments" },
 208         { 4, 0xa8, "RxJumboPkt" },
 209         { 4, 0xac, "RxSymblErr" },
 210         { 4, 0xb0, "InRangeErrCount" },
 211         { 4, 0xb4, "OutRangeErrCount" },
 212         { 4, 0xb8, "EEELpiEvent" },
 213         { 4, 0xbc, "EEELpiDuration" },
 214         { 4, 0xc0, "RxDiscard" },
 215         { 4, 0xc8, "TxQPKTQ6" },
 216         { 4, 0xcc, "TxQPKTQ7" },
 217         { 4, 0xd0, "TxPkts64Octets" },
 218         { 4, 0xd4, "TxPkts65to127Octets" },
 219         { 4, 0xd8, "TxPkts128to255Octets" },
 220         { 4, 0xdc, "TxPkts256to511Ocets" },
 221         { 4, 0xe0, "TxPkts512to1023Ocets" },
 222         { 4, 0xe4, "TxPkts1024toMaxPktOcets" },
 223 };
 224
 225 #define B53_MIBS_58XX_SIZE      ARRAY_SIZE(b53_mibs_58xx)
 226
 227 static int b53_do_vlan_op(struct b53_device *dev, u8 op)
 228 {
 229         unsigned int i;
 230
 231         b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op);
 232
 233         for (i = 0; i < 10; i++) {
 234                 u8 vta;
 235
 236                 b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta);
 237                 if (!(vta & VTA_START_CMD))
 238                         return 0;
 239
 240                 usleep_range(100, 200);
 241         }
 242
 243         return -EIO;
 244 }
 245
 246 static void b53_set_vlan_entry(struct b53_device *dev, u16 vid,
 247                                struct b53_vlan *vlan)
 248 {
 249         if (is5325(dev)) {
 250                 u32 entry = 0;
 251
 252                 if (vlan->members) {
 253                         entry = ((vlan->untag & VA_UNTAG_MASK_25) <<
 254                                  VA_UNTAG_S_25) | vlan->members;
 255                         if (dev->core_rev >= 3)
 256                                 entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S;
 257                         else
 258                                 entry |= VA_VALID_25;
 259                 }
 260
 261                 b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry);
 262                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
 263                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 264         } else if (is5365(dev)) {
 265                 u16 entry = 0;
 266
 267                 if (vlan->members)
 268                         entry = ((vlan->untag & VA_UNTAG_MASK_65) <<
 269                                  VA_UNTAG_S_65) | vlan->members | VA_VALID_65;
 270
 271                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry);
 272                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
 273                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 274         } else {
 275                 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
 276                 b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2],
 277                             (vlan->untag << VTE_UNTAG_S) | vlan->members);
 278
 279                 b53_do_vlan_op(dev, VTA_CMD_WRITE);
 280         }
 281
 282         dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
 283                 vid, vlan->members, vlan->untag);
 284 }
 285
 286 static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
 287                                struct b53_vlan *vlan)
 288 {
 289         if (is5325(dev)) {
 290                 u32 entry = 0;
 291
 292                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
 293                             VTA_RW_STATE_RD | VTA_RW_OP_EN);
 294                 b53_read32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, &entry);
 295
 296                 if (dev->core_rev >= 3)
 297                         vlan->valid = !!(entry & VA_VALID_25_R4);
 298                 else
 299                         vlan->valid = !!(entry & VA_VALID_25);
 300                 vlan->members = entry & VA_MEMBER_MASK;
 301                 vlan->untag = (entry >> VA_UNTAG_S_25) & VA_UNTAG_MASK_25;
 302
 303         } else if (is5365(dev)) {
 304                 u16 entry = 0;
 305
 306                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
 307                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 308                 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, &entry);
 309
 310                 vlan->valid = !!(entry & VA_VALID_65);
 311                 vlan->members = entry & VA_MEMBER_MASK;
 312                 vlan->untag = (entry >> VA_UNTAG_S_65) & VA_UNTAG_MASK_65;
 313         } else {
 314                 u32 entry = 0;
 315
 316                 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
 317                 b53_do_vlan_op(dev, VTA_CMD_READ);
 318                 b53_read32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], &entry);
 319                 vlan->members = entry & VTE_MEMBERS;
 320                 vlan->untag = (entry >> VTE_UNTAG_S) & VTE_MEMBERS;
 321                 vlan->valid = true;
 322         }
 323 }
 324
 325 static void b53_set_forwarding(struct b53_device *dev, int enable)
 326 {
 327         u8 mgmt;
 328
 329         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 330
 331         if (enable)
 332                 mgmt |= SM_SW_FWD_EN;
 333         else
 334                 mgmt &= ~SM_SW_FWD_EN;
 335
 336         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 337
 338         /* Include IMP port in dumb forwarding mode
 339          */
 340         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
 341         mgmt |= B53_MII_DUMB_FWDG_EN;
 342         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
 343
 344         /* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
 345          * frames should be flooded or not.
 346          */
 347         b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
 348         mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN;
 349         b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
 350 }
 351
 352 static void b53_enable_vlan(struct b53_device *dev, int port, bool enable,
 353                             bool enable_filtering)
 354 {
 355         u8 mgmt, vc0, vc1, vc4 = 0, vc5;
 356
 357         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 358         b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0);
 359         b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1);
 360
 361         if (is5325(dev) || is5365(dev)) {
 362                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
 363                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5);
 364         } else if (is63xx(dev)) {
 365                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4);
 366                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5);
 367         } else {
 368                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4);
 369                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
 370         }
 371
 372         if (enable) {
 373                 vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
 374                 vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
 375                 vc4 &= ~VC4_ING_VID_CHECK_MASK;
 376                 if (enable_filtering) {
 377                         vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
 378                         vc5 |= VC5_DROP_VTABLE_MISS;
 379                 } else {
 380                         vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
 381                         vc5 &= ~VC5_DROP_VTABLE_MISS;
 382                 }
 383
 384                 if (is5325(dev))
 385                         vc0 &= ~VC0_RESERVED_1;
 386
 387                 if (is5325(dev) || is5365(dev))
 388                         vc1 |= VC1_RX_MCST_TAG_EN;
 389
 390         } else {
 391                 vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
 392                 vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);
 393                 vc4 &= ~VC4_ING_VID_CHECK_MASK;
 394                 vc5 &= ~VC5_DROP_VTABLE_MISS;
 395
 396                 if (is5325(dev) || is5365(dev))
 397                         vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
 398                 else
 399                         vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S;
 400
 401                 if (is5325(dev) || is5365(dev))
 402                         vc1 &= ~VC1_RX_MCST_TAG_EN;
 403         }
 404
 405         if (!is5325(dev) && !is5365(dev))
 406                 vc5 &= ~VC5_VID_FFF_EN;
 407
 408         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0);
 409         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1);
 410
 411         if (is5325(dev) || is5365(dev)) {
 412                 /* enable the high 8 bit vid check on 5325 */
 413                 if (is5325(dev) && enable)
 414                         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3,
 415                                    VC3_HIGH_8BIT_EN);
 416                 else
 417                         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
 418
 419                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4);
 420                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5);
 421         } else if (is63xx(dev)) {
 422                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0);
 423                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4);
 424                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5);
 425         } else {
 426                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
 427                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4);
 428                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5);
 429         }
 430
 431         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 432
 433         dev->vlan_enabled = enable;
 434
 435         dev_dbg(dev->dev, "Port %d VLAN enabled: %d, filtering: %d\n",
 436                 port, enable, enable_filtering);
 437 }
 438
 439 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
 440 {
 441         u32 port_mask = 0;
 442         u16 max_size = JMS_MIN_SIZE;
 443
 444         if (is5325(dev) || is5365(dev))
 445                 return -EINVAL;
 446
 447         if (enable) {
 448                 port_mask = dev->enabled_ports;
 449                 max_size = JMS_MAX_SIZE;
 450                 if (allow_10_100)
 451                         port_mask |= JPM_10_100_JUMBO_EN;
 452         }
 453
 454         b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask);
 455         return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
 456 }
 457
 458 static int b53_flush_arl(struct b53_device *dev, u8 mask)
 459 {
 460         unsigned int i;
 461
 462         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
 463                    FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
 464
 465         for (i = 0; i < 10; i++) {
 466                 u8 fast_age_ctrl;
 467
 468                 b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
 469                           &fast_age_ctrl);
 470
 471                 if (!(fast_age_ctrl & FAST_AGE_DONE))
 472                         goto out;
 473
 474                 msleep(1);
 475         }
 476
 477         return -ETIMEDOUT;
 478 out:
 479         /* Only age dynamic entries (default behavior) */
 480         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, FAST_AGE_DYNAMIC);
 481         return 0;
 482 }
 483
 484 static int b53_fast_age_port(struct b53_device *dev, int port)
 485 {
 486         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
 487
 488         return b53_flush_arl(dev, FAST_AGE_PORT);
 489 }
 490
 491 static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
 492 {
 493         b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
 494
 495         return b53_flush_arl(dev, FAST_AGE_VLAN);
 496 }
 497
 498 void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
 499 {
 500         struct b53_device *dev = ds->priv;
 501         unsigned int i;
 502         u16 pvlan;
 503
 504         /* Enable the IMP port to be in the same VLAN as the other ports
 505          * on a per-port basis such that we only have Port i and IMP in
 506          * the same VLAN.
 507          */
 508         b53_for_each_port(dev, i) {
 509                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &pvlan);
 510                 pvlan |= BIT(cpu_port);
 511                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), pvlan);
 512         }
 513 }
 514 EXPORT_SYMBOL(b53_imp_vlan_setup);
 515
 516 static void b53_port_set_ucast_flood(struct b53_device *dev, int port,
 517                                      bool unicast)
 518 {
 519         u16 uc;
 520
 521         b53_read16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, &uc);
 522         if (unicast)
 523                 uc |= BIT(port);
 524         else
 525                 uc &= ~BIT(port);
 526         b53_write16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, uc);
 527 }
 528
 529 static void b53_port_set_mcast_flood(struct b53_device *dev, int port,
 530                                      bool multicast)
 531 {
 532         u16 mc;
 533
 534         b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &mc);
 535         if (multicast)
 536                 mc |= BIT(port);
 537         else
 538                 mc &= ~BIT(port);
 539         b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, mc);
 540
 541         b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &mc);
 542         if (multicast)
 543                 mc |= BIT(port);
 544         else
 545                 mc &= ~BIT(port);
 546         b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc);
 547 }
 548
 549 static void b53_port_set_learning(struct b53_device *dev, int port,
 550                                   bool learning)
 551 {
 552         u16 reg;
 553
 554         b53_read16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, &reg);
 555         if (learning)
 556                 reg &= ~BIT(port);
 557         else
 558                 reg |= BIT(port);
 559         b53_write16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, reg);
 560 }
 561
 562 int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
 563 {
 564         struct b53_device *dev = ds->priv;
 565         unsigned int cpu_port;
 566         int ret = 0;
 567         u16 pvlan;
 568
 569         if (!dsa_is_user_port(ds, port))
 570                 return 0;
 571
 572         cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
 573
 574         b53_port_set_ucast_flood(dev, port, true);
 575         b53_port_set_mcast_flood(dev, port, true);
 576         b53_port_set_learning(dev, port, false);
 577
 578         if (dev->ops->irq_enable)
 579                 ret = dev->ops->irq_enable(dev, port);
 580         if (ret)
 581                 return ret;
 582
 583         /* Clear the Rx and Tx disable bits and set to no spanning tree */
 584         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
 585
 586         /* Set this port, and only this one to be in the default VLAN,
 587          * if member of a bridge, restore its membership prior to
 588          * bringing down this port.
 589          */
 590         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
 591         pvlan &= ~0x1ff;
 592         pvlan |= BIT(port);
 593         pvlan |= dev->ports[port].vlan_ctl_mask;
 594         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
 595
 596         b53_imp_vlan_setup(ds, cpu_port);
 597
 598         /* If EEE was enabled, restore it */
 599         if (dev->ports[port].eee.eee_enabled)
 600                 b53_eee_enable_set(ds, port, true);
 601
 602         return 0;
 603 }
 604 EXPORT_SYMBOL(b53_enable_port);
 605
 606 void b53_disable_port(struct dsa_switch *ds, int port)
 607 {
 608         struct b53_device *dev = ds->priv;
 609         u8 reg;
 610
 611         /* Disable Tx/Rx for the port */
 612         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
 613         reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
 614         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
 615
 616         if (dev->ops->irq_disable)
 617                 dev->ops->irq_disable(dev, port);
 618 }
 619 EXPORT_SYMBOL(b53_disable_port);
 620
 621 void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
 622 {
 623         struct b53_device *dev = ds->priv;
 624         bool tag_en = !(dev->tag_protocol == DSA_TAG_PROTO_NONE);
 625         u8 hdr_ctl, val;
 626         u16 reg;
 627
 628         /* Resolve which bit controls the Broadcom tag */
 629         switch (port) {
 630         case 8:
 631                 val = BRCM_HDR_P8_EN;
 632                 break;
 633         case 7:
 634                 val = BRCM_HDR_P7_EN;
 635                 break;
 636         case 5:
 637                 val = BRCM_HDR_P5_EN;
 638                 break;
 639         default:
 640                 val = 0;
 641                 break;
 642         }
 643
 644         /* Enable management mode if tagging is requested */
 645         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &hdr_ctl);
 646         if (tag_en)
 647                 hdr_ctl |= SM_SW_FWD_MODE;
 648         else
 649                 hdr_ctl &= ~SM_SW_FWD_MODE;
 650         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, hdr_ctl);
 651
 652         /* Configure the appropriate IMP port */
 653         b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &hdr_ctl);
 654         if (port == 8)
 655                 hdr_ctl |= GC_FRM_MGMT_PORT_MII;
 656         else if (port == 5)
 657                 hdr_ctl |= GC_FRM_MGMT_PORT_M;
 658         b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, hdr_ctl);
 659
 660         /* Enable Broadcom tags for IMP port */
 661         b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl);
 662         if (tag_en)
 663                 hdr_ctl |= val;
 664         else
 665                 hdr_ctl &= ~val;
 666         b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl);
 667
 668         /* Registers below are only accessible on newer devices */
 669         if (!is58xx(dev))
 670                 return;
 671
 672         /* Enable reception Broadcom tag for CPU TX (switch RX) to
 673          * allow us to tag outgoing frames
 674          */
 675         b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, &reg);
 676         if (tag_en)
 677                 reg &= ~BIT(port);
 678         else
 679                 reg |= BIT(port);
 680         b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, reg);
 681
 682         /* Enable transmission of Broadcom tags from the switch (CPU RX) to
 683          * allow delivering frames to the per-port net_devices
 684          */
 685         b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, &reg);
 686         if (tag_en)
 687                 reg &= ~BIT(port);
 688         else
 689                 reg |= BIT(port);
 690         b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg);
 691 }
 692 EXPORT_SYMBOL(b53_brcm_hdr_setup);
 693
 694 static void b53_enable_cpu_port(struct b53_device *dev, int port)
 695 {
 696         u8 port_ctrl;
 697
 698         /* BCM5325 CPU port is at 8 */
 699         if ((is5325(dev) || is5365(dev)) && port == B53_CPU_PORT_25)
 700                 port = B53_CPU_PORT;
 701
 702         port_ctrl = PORT_CTRL_RX_BCST_EN |
 703                     PORT_CTRL_RX_MCST_EN |
 704                     PORT_CTRL_RX_UCST_EN;
 705         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), port_ctrl);
 706
 707         b53_brcm_hdr_setup(dev->ds, port);
 708
 709         b53_port_set_ucast_flood(dev, port, true);
 710         b53_port_set_mcast_flood(dev, port, true);
 711         b53_port_set_learning(dev, port, false);
 712 }
 713
 714 static void b53_enable_mib(struct b53_device *dev)
 715 {
 716         u8 gc;
 717
 718         b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
 719         gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN);
 720         b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
 721 }
 722
 723 static u16 b53_default_pvid(struct b53_device *dev)
 724 {
 725         if (is5325(dev) || is5365(dev))
 726                 return 1;
 727         else
 728                 return 0;
 729 }
 730
 731 static bool b53_vlan_port_needs_forced_tagged(struct dsa_switch *ds, int port)
 732 {
 733         struct b53_device *dev = ds->priv;
 734
 735         return dev->tag_protocol == DSA_TAG_PROTO_NONE && dsa_is_cpu_port(ds, port);
 736 }
 737
 738 int b53_configure_vlan(struct dsa_switch *ds)
 739 {
 740         struct b53_device *dev = ds->priv;
 741         struct b53_vlan vl = { 0 };
 742         struct b53_vlan *v;
 743         int i, def_vid;
 744         u16 vid;
 745
 746         def_vid = b53_default_pvid(dev);
 747
 748         /* clear all vlan entries */
 749         if (is5325(dev) || is5365(dev)) {
 750                 for (i = def_vid; i < dev->num_vlans; i++)
 751                         b53_set_vlan_entry(dev, i, &vl);
 752         } else {
 753                 b53_do_vlan_op(dev, VTA_CMD_CLEAR);
 754         }
 755
 756         b53_enable_vlan(dev, -1, dev->vlan_enabled, ds->vlan_filtering);
 757
 758         /* Create an untagged VLAN entry for the default PVID in case
 759          * CONFIG_VLAN_8021Q is disabled and there are no calls to
 760          * dsa_slave_vlan_rx_add_vid() to create the default VLAN
 761          * entry. Do this only when the tagging protocol is not
 762          * DSA_TAG_PROTO_NONE
 763          */
 764         b53_for_each_port(dev, i) {
 765                 v = &dev->vlans[def_vid];
 766                 v->members |= BIT(i);
 767                 if (!b53_vlan_port_needs_forced_tagged(ds, i))
 768                         v->untag = v->members;
 769                 b53_write16(dev, B53_VLAN_PAGE,
 770                             B53_VLAN_PORT_DEF_TAG(i), def_vid);
 771         }
 772
 773         /* Upon initial call we have not set-up any VLANs, but upon
 774          * system resume, we need to restore all VLAN entries.
 775          */
 776         for (vid = def_vid; vid < dev->num_vlans; vid++) {
 777                 v = &dev->vlans[vid];
 778
 779                 if (!v->members)
 780                         continue;
 781
 782                 b53_set_vlan_entry(dev, vid, v);
 783                 b53_fast_age_vlan(dev, vid);
 784         }
 785
 786         return 0;
 787 }
 788 EXPORT_SYMBOL(b53_configure_vlan);
 789
 790 static void b53_switch_reset_gpio(struct b53_device *dev)
 791 {
 792         int gpio = dev->reset_gpio;
 793
 794         if (gpio < 0)
 795                 return;
 796
 797         /* Reset sequence: RESET low(50ms)->high(20ms)
 798          */
 799         gpio_set_value(gpio, 0);
 800         mdelay(50);
 801
 802         gpio_set_value(gpio, 1);
 803         mdelay(20);
 804
 805         dev->current_page = 0xff;
 806 }
 807
 808 static int b53_switch_reset(struct b53_device *dev)
 809 {
 810         unsigned int timeout = 1000;
 811         u8 mgmt, reg;
 812
 813         b53_switch_reset_gpio(dev);
 814
 815         if (is539x(dev)) {
 816                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83);
 817                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
 818         }
 819
 820         /* This is specific to 58xx devices here, do not use is58xx() which
 821          * covers the larger Starfigther 2 family, including 7445/7278 which
 822          * still use this driver as a library and need to perform the reset
 823          * earlier.
 824          */
 825         if (dev->chip_id == BCM58XX_DEVICE_ID ||
 826             dev->chip_id == BCM583XX_DEVICE_ID) {
 827                 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
 828                 reg |= SW_RST | EN_SW_RST | EN_CH_RST;
 829                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg);
 830
 831                 do {
 832                         b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
 833                         if (!(reg & SW_RST))
 834                                 break;
 835
 836                         usleep_range(1000, 2000);
 837                 } while (timeout-- > 0);
 838
 839                 if (timeout == 0) {
 840                         dev_err(dev->dev,
 841                                 "Timeout waiting for SW_RST to clear!\n");
 842                         return -ETIMEDOUT;
 843                 }
 844         }
 845
 846         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 847
 848         if (!(mgmt & SM_SW_FWD_EN)) {
 849                 mgmt &= ~SM_SW_FWD_MODE;
 850                 mgmt |= SM_SW_FWD_EN;
 851
 852                 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 853                 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 854
 855                 if (!(mgmt & SM_SW_FWD_EN)) {
 856                         dev_err(dev->dev, "Failed to enable switch!\n");
 857                         return -EINVAL;
 858                 }
 859         }
 860
 861         b53_enable_mib(dev);
 862
 863         return b53_flush_arl(dev, FAST_AGE_STATIC);
 864 }
 865
 866 static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg)
 867 {
 868         struct b53_device *priv = ds->priv;
 869         u16 value = 0;
 870         int ret;
 871
 872         if (priv->ops->phy_read16)
 873                 ret = priv->ops->phy_read16(priv, addr, reg, &value);
 874         else
 875                 ret = b53_read16(priv, B53_PORT_MII_PAGE(addr),
 876                                  reg * 2, &value);
 877
 878         return ret ? ret : value;
 879 }
 880
 881 static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
 882 {
 883         struct b53_device *priv = ds->priv;
 884
 885         if (priv->ops->phy_write16)
 886                 return priv->ops->phy_write16(priv, addr, reg, val);
 887
 888         return b53_write16(priv, B53_PORT_MII_PAGE(addr), reg * 2, val);
 889 }
 890
 891 static int b53_reset_switch(struct b53_device *priv)
 892 {
 893         /* reset vlans */
 894         memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans);
 895         memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports);
 896
 897         priv->serdes_lane = B53_INVALID_LANE;
 898
 899         return b53_switch_reset(priv);
 900 }
 901
 902 static int b53_apply_config(struct b53_device *priv)
 903 {
 904         /* disable switching */
 905         b53_set_forwarding(priv, 0);
 906
 907         b53_configure_vlan(priv->ds);
 908
 909         /* enable switching */
 910         b53_set_forwarding(priv, 1);
 911
 912         return 0;
 913 }
 914
 915 static void b53_reset_mib(struct b53_device *priv)
 916 {
 917         u8 gc;
 918
 919         b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
 920
 921         b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB);
 922         msleep(1);
 923         b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB);
 924         msleep(1);
 925 }
 926
 927 static const struct b53_mib_desc *b53_get_mib(struct b53_device *dev)
 928 {
 929         if (is5365(dev))
 930                 return b53_mibs_65;
 931         else if (is63xx(dev))
 932                 return b53_mibs_63xx;
 933         else if (is58xx(dev))
 934                 return b53_mibs_58xx;
 935         else
 936                 return b53_mibs;
 937 }
 938
 939 static unsigned int b53_get_mib_size(struct b53_device *dev)
 940 {
 941         if (is5365(dev))
 942                 return B53_MIBS_65_SIZE;
 943         else if (is63xx(dev))
 944                 return B53_MIBS_63XX_SIZE;
 945         else if (is58xx(dev))
 946                 return B53_MIBS_58XX_SIZE;
 947         else
 948                 return B53_MIBS_SIZE;
 949 }
 950
 951 static struct phy_device *b53_get_phy_device(struct dsa_switch *ds, int port)
 952 {
 953         /* These ports typically do not have built-in PHYs */
 954         switch (port) {
 955         case B53_CPU_PORT_25:
 956         case 7:
 957         case B53_CPU_PORT:
 958                 return NULL;
 959         }
 960
 961         return mdiobus_get_phy(ds->slave_mii_bus, port);
 962 }
 963
 964 void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
 965                      uint8_t *data)
 966 {
 967         struct b53_device *dev = ds->priv;
 968         const struct b53_mib_desc *mibs = b53_get_mib(dev);
 969         unsigned int mib_size = b53_get_mib_size(dev);
 970         struct phy_device *phydev;
 971         unsigned int i;
 972
 973         if (stringset == ETH_SS_STATS) {
 974                 for (i = 0; i < mib_size; i++)
 975                         strlcpy(data + i * ETH_GSTRING_LEN,
 976                                 mibs[i].name, ETH_GSTRING_LEN);
 977         } else if (stringset == ETH_SS_PHY_STATS) {
 978                 phydev = b53_get_phy_device(ds, port);
 979                 if (!phydev)
 980                         return;
 981
 982                 phy_ethtool_get_strings(phydev, data);
 983         }
 984 }
 985 EXPORT_SYMBOL(b53_get_strings);
 986
 987 void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
 988 {
 989         struct b53_device *dev = ds->priv;
 990         const struct b53_mib_desc *mibs = b53_get_mib(dev);
 991         unsigned int mib_size = b53_get_mib_size(dev);
 992         const struct b53_mib_desc *s;
 993         unsigned int i;
 994         u64 val = 0;
 995
 996         if (is5365(dev) && port == 5)
 997                 port = 8;
 998
 999         mutex_lock(&dev->stats_mutex);
1000
1001         for (i = 0; i < mib_size; i++) {
1002                 s = &mibs[i];
1003
1004                 if (s->size == 8) {
1005                         b53_read64(dev, B53_MIB_PAGE(port), s->offset, &val);
1006                 } else {
1007                         u32 val32;
1008
1009                         b53_read32(dev, B53_MIB_PAGE(port), s->offset,
1010                                    &val32);
1011                         val = val32;
1012                 }
1013                 data[i] = (u64)val;
1014         }
1015
1016         mutex_unlock(&dev->stats_mutex);
1017 }
1018 EXPORT_SYMBOL(b53_get_ethtool_stats);
1019
1020 void b53_get_ethtool_phy_stats(struct dsa_switch *ds, int port, uint64_t *data)
1021 {
1022         struct phy_device *phydev;
1023
1024         phydev = b53_get_phy_device(ds, port);
1025         if (!phydev)
1026                 return;
1027
1028         phy_ethtool_get_stats(phydev, NULL, data);
1029 }
1030 EXPORT_SYMBOL(b53_get_ethtool_phy_stats);
1031
1032 int b53_get_sset_count(struct dsa_switch *ds, int port, int sset)
1033 {
1034         struct b53_device *dev = ds->priv;
1035         struct phy_device *phydev;
1036
1037         if (sset == ETH_SS_STATS) {
1038                 return b53_get_mib_size(dev);
1039         } else if (sset == ETH_SS_PHY_STATS) {
1040                 phydev = b53_get_phy_device(ds, port);
1041                 if (!phydev)
1042                         return 0;
1043
1044                 return phy_ethtool_get_sset_count(phydev);
1045         }
1046
1047         return 0;
1048 }
1049 EXPORT_SYMBOL(b53_get_sset_count);
1050
1051 enum b53_devlink_resource_id {
1052         B53_DEVLINK_PARAM_ID_VLAN_TABLE,
1053 };
1054
1055 static u64 b53_devlink_vlan_table_get(void *priv)
1056 {
1057         struct b53_device *dev = priv;
1058         struct b53_vlan *vl;
1059         unsigned int i;
1060         u64 count = 0;
1061
1062         for (i = 0; i < dev->num_vlans; i++) {
1063                 vl = &dev->vlans[i];
1064                 if (vl->members)
1065                         count++;
1066         }
1067
1068         return count;
1069 }
1070
1071 int b53_setup_devlink_resources(struct dsa_switch *ds)
1072 {
1073         struct devlink_resource_size_params size_params;
1074         struct b53_device *dev = ds->priv;
1075         int err;
1076
1077         devlink_resource_size_params_init(&size_params, dev->num_vlans,
1078                                           dev->num_vlans,
1079                                           1, DEVLINK_RESOURCE_UNIT_ENTRY);
1080
1081         err = dsa_devlink_resource_register(ds, "VLAN", dev->num_vlans,
1082                                             B53_DEVLINK_PARAM_ID_VLAN_TABLE,
1083                                             DEVLINK_RESOURCE_ID_PARENT_TOP,
1084                                             &size_params);
1085         if (err)
1086                 goto out;
1087
1088         dsa_devlink_resource_occ_get_register(ds,
1089                                               B53_DEVLINK_PARAM_ID_VLAN_TABLE,
1090                                               b53_devlink_vlan_table_get, dev);
1091
1092         return 0;
1093 out:
1094         dsa_devlink_resources_unregister(ds);
1095         return err;
1096 }
1097 EXPORT_SYMBOL(b53_setup_devlink_resources);
1098
1099 static int b53_setup(struct dsa_switch *ds)
1100 {
1101         struct b53_device *dev = ds->priv;
1102         unsigned int port;
1103         int ret;
1104
1105         /* Request bridge PVID untagged when DSA_TAG_PROTO_NONE is set
1106          * which forces the CPU port to be tagged in all VLANs.
1107          */
1108         ds->untag_bridge_pvid = dev->tag_protocol == DSA_TAG_PROTO_NONE;
1109
1110         ret = b53_reset_switch(dev);
1111         if (ret) {
1112                 dev_err(ds->dev, "failed to reset switch\n");
1113                 return ret;
1114         }
1115
1116         b53_reset_mib(dev);
1117
1118         ret = b53_apply_config(dev);
1119         if (ret) {
1120                 dev_err(ds->dev, "failed to apply configuration\n");
1121                 return ret;
1122         }
1123
1124         /* Configure IMP/CPU port, disable all other ports. Enabled
1125          * ports will be configured with .port_enable
1126          */
1127         for (port = 0; port < dev->num_ports; port++) {
1128                 if (dsa_is_cpu_port(ds, port))
1129                         b53_enable_cpu_port(dev, port);
1130                 else
1131                         b53_disable_port(ds, port);
1132         }
1133
1134         return b53_setup_devlink_resources(ds);
1135 }
1136
1137 static void b53_teardown(struct dsa_switch *ds)
1138 {
1139         dsa_devlink_resources_unregister(ds);
1140 }
1141
1142 static void b53_force_link(struct b53_device *dev, int port, int link)
1143 {
1144         u8 reg, val, off;
1145
1146         /* Override the port settings */
1147         if (port == dev->imp_port) {
1148                 off = B53_PORT_OVERRIDE_CTRL;
1149                 val = PORT_OVERRIDE_EN;
1150         } else {
1151                 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1152                 val = GMII_PO_EN;
1153         }
1154
1155         b53_read8(dev, B53_CTRL_PAGE, off, &reg);
1156         reg |= val;
1157         if (link)
1158                 reg |= PORT_OVERRIDE_LINK;
1159         else
1160                 reg &= ~PORT_OVERRIDE_LINK;
1161         b53_write8(dev, B53_CTRL_PAGE, off, reg);
1162 }
1163
1164 static void b53_force_port_config(struct b53_device *dev, int port,
1165                                   int speed, int duplex,
1166                                   bool tx_pause, bool rx_pause)
1167 {
1168         u8 reg, val, off;
1169
1170         /* Override the port settings */
1171         if (port == dev->imp_port) {
1172                 off = B53_PORT_OVERRIDE_CTRL;
1173                 val = PORT_OVERRIDE_EN;
1174         } else {
1175                 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1176                 val = GMII_PO_EN;
1177         }
1178
1179         b53_read8(dev, B53_CTRL_PAGE, off, &reg);
1180         reg |= val;
1181         if (duplex == DUPLEX_FULL)
1182                 reg |= PORT_OVERRIDE_FULL_DUPLEX;
1183         else
1184                 reg &= ~PORT_OVERRIDE_FULL_DUPLEX;
1185
1186         switch (speed) {
1187         case 2000:
1188                 reg |= PORT_OVERRIDE_SPEED_2000M;
1189                 fallthrough;
1190         case SPEED_1000:
1191                 reg |= PORT_OVERRIDE_SPEED_1000M;
1192                 break;
1193         case SPEED_100:
1194                 reg |= PORT_OVERRIDE_SPEED_100M;
1195                 break;
1196         case SPEED_10:
1197                 reg |= PORT_OVERRIDE_SPEED_10M;
1198                 break;
1199         default:
1200                 dev_err(dev->dev, "unknown speed: %d\n", speed);
1201                 return;
1202         }
1203
1204         if (rx_pause)
1205                 reg |= PORT_OVERRIDE_RX_FLOW;
1206         if (tx_pause)
1207                 reg |= PORT_OVERRIDE_TX_FLOW;
1208
1209         b53_write8(dev, B53_CTRL_PAGE, off, reg);
1210 }
1211
1212 static void b53_adjust_link(struct dsa_switch *ds, int port,
1213                             struct phy_device *phydev)
1214 {
1215         struct b53_device *dev = ds->priv;
1216         struct ethtool_eee *p = &dev->ports[port].eee;
1217         u8 rgmii_ctrl = 0, reg = 0, off;
1218         bool tx_pause = false;
1219         bool rx_pause = false;
1220
1221         if (!phy_is_pseudo_fixed_link(phydev))
1222                 return;
1223
1224         /* Enable flow control on BCM5301x's CPU port */
1225         if (is5301x(dev) && port == dev->cpu_port)
1226                 tx_pause = rx_pause = true;
1227
1228         if (phydev->pause) {
1229                 if (phydev->asym_pause)
1230                         tx_pause = true;
1231                 rx_pause = true;
1232         }
1233
1234         b53_force_port_config(dev, port, phydev->speed, phydev->duplex,
1235                               tx_pause, rx_pause);
1236         b53_force_link(dev, port, phydev->link);
1237
1238         if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
1239                 if (port == dev->imp_port)
1240                         off = B53_RGMII_CTRL_IMP;
1241                 else
1242                         off = B53_RGMII_CTRL_P(port);
1243
1244                 /* Configure the port RGMII clock delay by DLL disabled and
1245                  * tx_clk aligned timing (restoring to reset defaults)
1246                  */
1247                 b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
1248                 rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC |
1249                                 RGMII_CTRL_TIMING_SEL);
1250
1251                 /* PHY_INTERFACE_MODE_RGMII_TXID means TX internal delay, make
1252                  * sure that we enable the port TX clock internal delay to
1253                  * account for this internal delay that is inserted, otherwise
1254                  * the switch won't be able to receive correctly.
1255                  *
1256                  * PHY_INTERFACE_MODE_RGMII means that we are not introducing
1257                  * any delay neither on transmission nor reception, so the
1258                  * BCM53125 must also be configured accordingly to account for
1259                  * the lack of delay and introduce
1260                  *
1261                  * The BCM53125 switch has its RX clock and TX clock control
1262                  * swapped, hence the reason why we modify the TX clock path in
1263                  * the "RGMII" case
1264                  */
1265                 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
1266                         rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
1267                 if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
1268                         rgmii_ctrl |= RGMII_CTRL_DLL_TXC | RGMII_CTRL_DLL_RXC;
1269                 rgmii_ctrl |= RGMII_CTRL_TIMING_SEL;
1270                 b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
1271
1272                 dev_info(ds->dev, "Configured port %d for %s\n", port,
1273                          phy_modes(phydev->interface));
1274         }
1275
1276         /* configure MII port if necessary */
1277         if (is5325(dev)) {
1278                 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1279                           &reg);
1280
1281                 /* reverse mii needs to be enabled */
1282                 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1283                         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1284                                    reg | PORT_OVERRIDE_RV_MII_25);
1285                         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1286                                   &reg);
1287
1288                         if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1289                                 dev_err(ds->dev,
1290                                         "Failed to enable reverse MII mode\n");
1291                                 return;
1292                         }
1293                 }
1294         } else if (is5301x(dev)) {
1295                 if (port != dev->cpu_port) {
1296                         b53_force_port_config(dev, dev->cpu_port, 2000,
1297                                               DUPLEX_FULL, true, true);
1298                         b53_force_link(dev, dev->cpu_port, 1);
1299                 }
1300         }
1301
1302         /* Re-negotiate EEE if it was enabled already */
1303         p->eee_enabled = b53_eee_init(ds, port, phydev);
1304 }
1305
1306 void b53_port_event(struct dsa_switch *ds, int port)
1307 {
1308         struct b53_device *dev = ds->priv;
1309         bool link;
1310         u16 sts;
1311
1312         b53_read16(dev, B53_STAT_PAGE, B53_LINK_STAT, &sts);
1313         link = !!(sts & BIT(port));
1314         dsa_port_phylink_mac_change(ds, port, link);
1315 }
1316 EXPORT_SYMBOL(b53_port_event);
1317
1318 void b53_phylink_validate(struct dsa_switch *ds, int port,
1319                           unsigned long *supported,
1320                           struct phylink_link_state *state)
1321 {
1322         struct b53_device *dev = ds->priv;
1323         __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
1324
1325         if (dev->ops->serdes_phylink_validate)
1326                 dev->ops->serdes_phylink_validate(dev, port, mask, state);
1327
1328         /* Allow all the expected bits */
1329         phylink_set(mask, Autoneg);
1330         phylink_set_port_modes(mask);
1331         phylink_set(mask, Pause);
1332         phylink_set(mask, Asym_Pause);
1333
1334         /* With the exclusion of 5325/5365, MII, Reverse MII and 802.3z, we
1335          * support Gigabit, including Half duplex.
1336          */
1337         if (state->interface != PHY_INTERFACE_MODE_MII &&
1338             state->interface != PHY_INTERFACE_MODE_REVMII &&
1339             !phy_interface_mode_is_8023z(state->interface) &&
1340             !(is5325(dev) || is5365(dev))) {
1341                 phylink_set(mask, 1000baseT_Full);
1342                 phylink_set(mask, 1000baseT_Half);
1343         }
1344
1345         if (!phy_interface_mode_is_8023z(state->interface)) {
1346                 phylink_set(mask, 10baseT_Half);
1347                 phylink_set(mask, 10baseT_Full);
1348                 phylink_set(mask, 100baseT_Half);
1349                 phylink_set(mask, 100baseT_Full);
1350         }
1351
1352         bitmap_and(supported, supported, mask,
1353                    __ETHTOOL_LINK_MODE_MASK_NBITS);
1354         bitmap_and(state->advertising, state->advertising, mask,
1355                    __ETHTOOL_LINK_MODE_MASK_NBITS);
1356
1357         phylink_helper_basex_speed(state);
1358 }
1359 EXPORT_SYMBOL(b53_phylink_validate);
1360
1361 int b53_phylink_mac_link_state(struct dsa_switch *ds, int port,
1362                                struct phylink_link_state *state)
1363 {
1364         struct b53_device *dev = ds->priv;
1365         int ret = -EOPNOTSUPP;
1366
1367         if ((phy_interface_mode_is_8023z(state->interface) ||
1368              state->interface == PHY_INTERFACE_MODE_SGMII) &&
1369              dev->ops->serdes_link_state)
1370                 ret = dev->ops->serdes_link_state(dev, port, state);
1371
1372         return ret;
1373 }
1374 EXPORT_SYMBOL(b53_phylink_mac_link_state);
1375
1376 void b53_phylink_mac_config(struct dsa_switch *ds, int port,
1377                             unsigned int mode,
1378                             const struct phylink_link_state *state)
1379 {
1380         struct b53_device *dev = ds->priv;
1381
1382         if (mode == MLO_AN_PHY || mode == MLO_AN_FIXED)
1383                 return;
1384
1385         if ((phy_interface_mode_is_8023z(state->interface) ||
1386              state->interface == PHY_INTERFACE_MODE_SGMII) &&
1387              dev->ops->serdes_config)
1388                 dev->ops->serdes_config(dev, port, mode, state);
1389 }
1390 EXPORT_SYMBOL(b53_phylink_mac_config);
1391
1392 void b53_phylink_mac_an_restart(struct dsa_switch *ds, int port)
1393 {
1394         struct b53_device *dev = ds->priv;
1395
1396         if (dev->ops->serdes_an_restart)
1397                 dev->ops->serdes_an_restart(dev, port);
1398 }
1399 EXPORT_SYMBOL(b53_phylink_mac_an_restart);
1400
1401 void b53_phylink_mac_link_down(struct dsa_switch *ds, int port,
1402                                unsigned int mode,
1403                                phy_interface_t interface)
1404 {
1405         struct b53_device *dev = ds->priv;
1406
1407         if (mode == MLO_AN_PHY)
1408                 return;
1409
1410         if (mode == MLO_AN_FIXED) {
1411                 b53_force_link(dev, port, false);
1412                 return;
1413         }
1414
1415         if (phy_interface_mode_is_8023z(interface) &&
1416             dev->ops->serdes_link_set)
1417                 dev->ops->serdes_link_set(dev, port, mode, interface, false);
1418 }
1419 EXPORT_SYMBOL(b53_phylink_mac_link_down);
1420
1421 void b53_phylink_mac_link_up(struct dsa_switch *ds, int port,
1422                              unsigned int mode,
1423                              phy_interface_t interface,
1424                              struct phy_device *phydev,
1425                              int speed, int duplex,
1426                              bool tx_pause, bool rx_pause)
1427 {
1428         struct b53_device *dev = ds->priv;
1429
1430         if (mode == MLO_AN_PHY)
1431                 return;
1432
1433         if (mode == MLO_AN_FIXED) {
1434                 b53_force_port_config(dev, port, speed, duplex,
1435                                       tx_pause, rx_pause);
1436                 b53_force_link(dev, port, true);
1437                 return;
1438         }
1439
1440         if (phy_interface_mode_is_8023z(interface) &&
1441             dev->ops->serdes_link_set)
1442                 dev->ops->serdes_link_set(dev, port, mode, interface, true);
1443 }
1444 EXPORT_SYMBOL(b53_phylink_mac_link_up);
1445
1446 int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1447                        struct netlink_ext_ack *extack)
1448 {
1449         struct b53_device *dev = ds->priv;
1450
1451         b53_enable_vlan(dev, port, dev->vlan_enabled, vlan_filtering);
1452
1453         return 0;
1454 }
1455 EXPORT_SYMBOL(b53_vlan_filtering);
1456
1457 static int b53_vlan_prepare(struct dsa_switch *ds, int port,
1458                             const struct switchdev_obj_port_vlan *vlan)
1459 {
1460         struct b53_device *dev = ds->priv;
1461
1462         if ((is5325(dev) || is5365(dev)) && vlan->vid == 0)
1463                 return -EOPNOTSUPP;
1464
1465         /* Port 7 on 7278 connects to the ASP's UniMAC which is not capable of
1466          * receiving VLAN tagged frames at all, we can still allow the port to
1467          * be configured for egress untagged.
1468          */
1469         if (dev->chip_id == BCM7278_DEVICE_ID && port == 7 &&
1470             !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED))
1471                 return -EINVAL;
1472
1473         if (vlan->vid >= dev->num_vlans)
1474                 return -ERANGE;
1475
1476         b53_enable_vlan(dev, port, true, ds->vlan_filtering);
1477
1478         return 0;
1479 }
1480
1481 int b53_vlan_add(struct dsa_switch *ds, int port,
1482                  const struct switchdev_obj_port_vlan *vlan,
1483                  struct netlink_ext_ack *extack)
1484 {
1485         struct b53_device *dev = ds->priv;
1486         bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1487         bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1488         struct b53_vlan *vl;
1489         int err;
1490
1491         err = b53_vlan_prepare(ds, port, vlan);
1492         if (err)
1493                 return err;
1494
1495         vl = &dev->vlans[vlan->vid];
1496
1497         b53_get_vlan_entry(dev, vlan->vid, vl);
1498
1499         if (vlan->vid == 0 && vlan->vid == b53_default_pvid(dev))
1500                 untagged = true;
1501
1502         vl->members |= BIT(port);
1503         if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port))
1504                 vl->untag |= BIT(port);
1505         else
1506                 vl->untag &= ~BIT(port);
1507
1508         b53_set_vlan_entry(dev, vlan->vid, vl);
1509         b53_fast_age_vlan(dev, vlan->vid);
1510
1511         if (pvid && !dsa_is_cpu_port(ds, port)) {
1512                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1513                             vlan->vid);
1514                 b53_fast_age_vlan(dev, vlan->vid);
1515         }
1516
1517         return 0;
1518 }
1519 EXPORT_SYMBOL(b53_vlan_add);
1520
1521 int b53_vlan_del(struct dsa_switch *ds, int port,
1522                  const struct switchdev_obj_port_vlan *vlan)
1523 {
1524         struct b53_device *dev = ds->priv;
1525         bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1526         struct b53_vlan *vl;
1527         u16 pvid;
1528
1529         b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
1530
1531         vl = &dev->vlans[vlan->vid];
1532
1533         b53_get_vlan_entry(dev, vlan->vid, vl);
1534
1535         vl->members &= ~BIT(port);
1536
1537         if (pvid == vlan->vid)
1538                 pvid = b53_default_pvid(dev);
1539
1540         if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port))
1541                 vl->untag &= ~(BIT(port));
1542
1543         b53_set_vlan_entry(dev, vlan->vid, vl);
1544         b53_fast_age_vlan(dev, vlan->vid);
1545
1546         b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid);
1547         b53_fast_age_vlan(dev, pvid);
1548
1549         return 0;
1550 }
1551 EXPORT_SYMBOL(b53_vlan_del);
1552
1553 /* Address Resolution Logic routines */
1554 static int b53_arl_op_wait(struct b53_device *dev)
1555 {
1556         unsigned int timeout = 10;
1557         u8 reg;
1558
1559         do {
1560                 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1561                 if (!(reg & ARLTBL_START_DONE))
1562                         return 0;
1563
1564                 usleep_range(1000, 2000);
1565         } while (timeout--);
1566
1567         dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg);
1568
1569         return -ETIMEDOUT;
1570 }
1571
1572 static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
1573 {
1574         u8 reg;
1575
1576         if (op > ARLTBL_RW)
1577                 return -EINVAL;
1578
1579         b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1580         reg |= ARLTBL_START_DONE;
1581         if (op)
1582                 reg |= ARLTBL_RW;
1583         else
1584                 reg &= ~ARLTBL_RW;
1585         if (dev->vlan_enabled)
1586                 reg &= ~ARLTBL_IVL_SVL_SELECT;
1587         else
1588                 reg |= ARLTBL_IVL_SVL_SELECT;
1589         b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg);
1590
1591         return b53_arl_op_wait(dev);
1592 }
1593
1594 static int b53_arl_read(struct b53_device *dev, u64 mac,
1595                         u16 vid, struct b53_arl_entry *ent, u8 *idx)
1596 {
1597         DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
1598         unsigned int i;
1599         int ret;
1600
1601         ret = b53_arl_op_wait(dev);
1602         if (ret)
1603                 return ret;
1604
1605         bitmap_zero(free_bins, dev->num_arl_bins);
1606
1607         /* Read the bins */
1608         for (i = 0; i < dev->num_arl_bins; i++) {
1609                 u64 mac_vid;
1610                 u32 fwd_entry;
1611
1612                 b53_read64(dev, B53_ARLIO_PAGE,
1613                            B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
1614                 b53_read32(dev, B53_ARLIO_PAGE,
1615                            B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
1616                 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1617
1618                 if (!(fwd_entry & ARLTBL_VALID)) {
1619                         set_bit(i, free_bins);
1620                         continue;
1621                 }
1622                 if ((mac_vid & ARLTBL_MAC_MASK) != mac)
1623                         continue;
1624                 if (dev->vlan_enabled &&
1625                     ((mac_vid >> ARLTBL_VID_S) & ARLTBL_VID_MASK) != vid)
1626                         continue;
1627                 *idx = i;
1628                 return 0;
1629         }
1630
1631         if (bitmap_weight(free_bins, dev->num_arl_bins) == 0)
1632                 return -ENOSPC;
1633
1634         *idx = find_first_bit(free_bins, dev->num_arl_bins);
1635
1636         return -ENOENT;
1637 }
1638
1639 static int b53_arl_op(struct b53_device *dev, int op, int port,
1640                       const unsigned char *addr, u16 vid, bool is_valid)
1641 {
1642         struct b53_arl_entry ent;
1643         u32 fwd_entry;
1644         u64 mac, mac_vid = 0;
1645         u8 idx = 0;
1646         int ret;
1647
1648         /* Convert the array into a 64-bit MAC */
1649         mac = ether_addr_to_u64(addr);
1650
1651         /* Perform a read for the given MAC and VID */
1652         b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
1653         b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
1654
1655         /* Issue a read operation for this MAC */
1656         ret = b53_arl_rw_op(dev, 1);
1657         if (ret)
1658                 return ret;
1659
1660         ret = b53_arl_read(dev, mac, vid, &ent, &idx);
1661
1662         /* If this is a read, just finish now */
1663         if (op)
1664                 return ret;
1665
1666         switch (ret) {
1667         case -ETIMEDOUT:
1668                 return ret;
1669         case -ENOSPC:
1670                 dev_dbg(dev->dev, "{%pM,%.4d} no space left in ARL\n",
1671                         addr, vid);
1672                 return is_valid ? ret : 0;
1673         case -ENOENT:
1674                 /* We could not find a matching MAC, so reset to a new entry */
1675                 dev_dbg(dev->dev, "{%pM,%.4d} not found, using idx: %d\n",
1676                         addr, vid, idx);
1677                 fwd_entry = 0;
1678                 break;
1679         default:
1680                 dev_dbg(dev->dev, "{%pM,%.4d} found, using idx: %d\n",
1681                         addr, vid, idx);
1682                 break;
1683         }
1684
1685         /* For multicast address, the port is a bitmask and the validity
1686          * is determined by having at least one port being still active
1687          */
1688         if (!is_multicast_ether_addr(addr)) {
1689                 ent.port = port;
1690                 ent.is_valid = is_valid;
1691         } else {
1692                 if (is_valid)
1693                         ent.port |= BIT(port);
1694                 else
1695                         ent.port &= ~BIT(port);
1696
1697                 ent.is_valid = !!(ent.port);
1698         }
1699
1700         ent.vid = vid;
1701         ent.is_static = true;
1702         ent.is_age = false;
1703         memcpy(ent.mac, addr, ETH_ALEN);
1704         b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
1705
1706         b53_write64(dev, B53_ARLIO_PAGE,
1707                     B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
1708         b53_write32(dev, B53_ARLIO_PAGE,
1709                     B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
1710
1711         return b53_arl_rw_op(dev, 0);
1712 }
1713
1714 int b53_fdb_add(struct dsa_switch *ds, int port,
1715                 const unsigned char *addr, u16 vid)
1716 {
1717         struct b53_device *priv = ds->priv;
1718
1719         /* 5325 and 5365 require some more massaging, but could
1720          * be supported eventually
1721          */
1722         if (is5325(priv) || is5365(priv))
1723                 return -EOPNOTSUPP;
1724
1725         return b53_arl_op(priv, 0, port, addr, vid, true);
1726 }
1727 EXPORT_SYMBOL(b53_fdb_add);
1728
1729 int b53_fdb_del(struct dsa_switch *ds, int port,
1730                 const unsigned char *addr, u16 vid)
1731 {
1732         struct b53_device *priv = ds->priv;
1733
1734         return b53_arl_op(priv, 0, port, addr, vid, false);
1735 }
1736 EXPORT_SYMBOL(b53_fdb_del);
1737
1738 static int b53_arl_search_wait(struct b53_device *dev)
1739 {
1740         unsigned int timeout = 1000;
1741         u8 reg;
1742
1743         do {
1744                 b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, &reg);
1745                 if (!(reg & ARL_SRCH_STDN))
1746                         return 0;
1747
1748                 if (reg & ARL_SRCH_VLID)
1749                         return 0;
1750
1751                 usleep_range(1000, 2000);
1752         } while (timeout--);
1753
1754         return -ETIMEDOUT;
1755 }
1756
1757 static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
1758                               struct b53_arl_entry *ent)
1759 {
1760         u64 mac_vid;
1761         u32 fwd_entry;
1762
1763         b53_read64(dev, B53_ARLIO_PAGE,
1764                    B53_ARL_SRCH_RSTL_MACVID(idx), &mac_vid);
1765         b53_read32(dev, B53_ARLIO_PAGE,
1766                    B53_ARL_SRCH_RSTL(idx), &fwd_entry);
1767         b53_arl_to_entry(ent, mac_vid, fwd_entry);
1768 }
1769
1770 static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
1771                         dsa_fdb_dump_cb_t *cb, void *data)
1772 {
1773         if (!ent->is_valid)
1774                 return 0;
1775
1776         if (port != ent->port)
1777                 return 0;
1778
1779         return cb(ent->mac, ent->vid, ent->is_static, data);
1780 }
1781
1782 int b53_fdb_dump(struct dsa_switch *ds, int port,
1783                  dsa_fdb_dump_cb_t *cb, void *data)
1784 {
1785         struct b53_device *priv = ds->priv;
1786         struct b53_arl_entry results[2];
1787         unsigned int count = 0;
1788         int ret;
1789         u8 reg;
1790
1791         /* Start search operation */
1792         reg = ARL_SRCH_STDN;
1793         b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
1794
1795         do {
1796                 ret = b53_arl_search_wait(priv);
1797                 if (ret)
1798                         return ret;
1799
1800                 b53_arl_search_rd(priv, 0, &results[0]);
1801                 ret = b53_fdb_copy(port, &results[0], cb, data);
1802                 if (ret)
1803                         return ret;
1804
1805                 if (priv->num_arl_bins > 2) {
1806                         b53_arl_search_rd(priv, 1, &results[1]);
1807                         ret = b53_fdb_copy(port, &results[1], cb, data);
1808                         if (ret)
1809                                 return ret;
1810
1811                         if (!results[0].is_valid && !results[1].is_valid)
1812                                 break;
1813                 }
1814
1815         } while (count++ < b53_max_arl_entries(priv) / 2);
1816
1817         return 0;
1818 }
1819 EXPORT_SYMBOL(b53_fdb_dump);
1820
1821 int b53_mdb_add(struct dsa_switch *ds, int port,
1822                 const struct switchdev_obj_port_mdb *mdb)
1823 {
1824         struct b53_device *priv = ds->priv;
1825
1826         /* 5325 and 5365 require some more massaging, but could
1827          * be supported eventually
1828          */
1829         if (is5325(priv) || is5365(priv))
1830                 return -EOPNOTSUPP;
1831
1832         return b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
1833 }
1834 EXPORT_SYMBOL(b53_mdb_add);
1835
1836 int b53_mdb_del(struct dsa_switch *ds, int port,
1837                 const struct switchdev_obj_port_mdb *mdb)
1838 {
1839         struct b53_device *priv = ds->priv;
1840         int ret;
1841
1842         ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
1843         if (ret)
1844                 dev_err(ds->dev, "failed to delete MDB entry\n");
1845
1846         return ret;
1847 }
1848 EXPORT_SYMBOL(b53_mdb_del);
1849
1850 int b53_br_join(struct dsa_switch *ds, int port, struct net_device *br)
1851 {
1852         struct b53_device *dev = ds->priv;
1853         s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
1854         u16 pvlan, reg;
1855         unsigned int i;
1856
1857         /* On 7278, port 7 which connects to the ASP should only receive
1858          * traffic from matching CFP rules.
1859          */
1860         if (dev->chip_id == BCM7278_DEVICE_ID && port == 7)
1861                 return -EINVAL;
1862
1863         /* Make this port leave the all VLANs join since we will have proper
1864          * VLAN entries from now on
1865          */
1866         if (is58xx(dev)) {
1867                 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1868                 reg &= ~BIT(port);
1869                 if ((reg & BIT(cpu_port)) == BIT(cpu_port))
1870                         reg &= ~BIT(cpu_port);
1871                 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1872         }
1873
1874         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1875
1876         b53_for_each_port(dev, i) {
1877                 if (dsa_to_port(ds, i)->bridge_dev != br)
1878                         continue;
1879
1880                 /* Add this local port to the remote port VLAN control
1881                  * membership and update the remote port bitmask
1882                  */
1883                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1884                 reg |= BIT(port);
1885                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1886                 dev->ports[i].vlan_ctl_mask = reg;
1887
1888                 pvlan |= BIT(i);
1889         }
1890
1891         /* Configure the local port VLAN control membership to include
1892          * remote ports and update the local port bitmask
1893          */
1894         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1895         dev->ports[port].vlan_ctl_mask = pvlan;
1896
1897         return 0;
1898 }
1899 EXPORT_SYMBOL(b53_br_join);
1900
1901 void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
1902 {
1903         struct b53_device *dev = ds->priv;
1904         struct b53_vlan *vl = &dev->vlans[0];
1905         s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
1906         unsigned int i;
1907         u16 pvlan, reg, pvid;
1908
1909         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1910
1911         b53_for_each_port(dev, i) {
1912                 /* Don't touch the remaining ports */
1913                 if (dsa_to_port(ds, i)->bridge_dev != br)
1914                         continue;
1915
1916                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1917                 reg &= ~BIT(port);
1918                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1919                 dev->ports[port].vlan_ctl_mask = reg;
1920
1921                 /* Prevent self removal to preserve isolation */
1922                 if (port != i)
1923                         pvlan &= ~BIT(i);
1924         }
1925
1926         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1927         dev->ports[port].vlan_ctl_mask = pvlan;
1928
1929         pvid = b53_default_pvid(dev);
1930
1931         /* Make this port join all VLANs without VLAN entries */
1932         if (is58xx(dev)) {
1933                 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1934                 reg |= BIT(port);
1935                 if (!(reg & BIT(cpu_port)))
1936                         reg |= BIT(cpu_port);
1937                 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1938         } else {
1939                 b53_get_vlan_entry(dev, pvid, vl);
1940                 vl->members |= BIT(port) | BIT(cpu_port);
1941                 vl->untag |= BIT(port) | BIT(cpu_port);
1942                 b53_set_vlan_entry(dev, pvid, vl);
1943         }
1944 }
1945 EXPORT_SYMBOL(b53_br_leave);
1946
1947 void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state)
1948 {
1949         struct b53_device *dev = ds->priv;
1950         u8 hw_state;
1951         u8 reg;
1952
1953         switch (state) {
1954         case BR_STATE_DISABLED:
1955                 hw_state = PORT_CTRL_DIS_STATE;
1956                 break;
1957         case BR_STATE_LISTENING:
1958                 hw_state = PORT_CTRL_LISTEN_STATE;
1959                 break;
1960         case BR_STATE_LEARNING:
1961                 hw_state = PORT_CTRL_LEARN_STATE;
1962                 break;
1963         case BR_STATE_FORWARDING:
1964                 hw_state = PORT_CTRL_FWD_STATE;
1965                 break;
1966         case BR_STATE_BLOCKING:
1967                 hw_state = PORT_CTRL_BLOCK_STATE;
1968                 break;
1969         default:
1970                 dev_err(ds->dev, "invalid STP state: %d\n", state);
1971                 return;
1972         }
1973
1974         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
1975         reg &= ~PORT_CTRL_STP_STATE_MASK;
1976         reg |= hw_state;
1977         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
1978 }
1979 EXPORT_SYMBOL(b53_br_set_stp_state);
1980
1981 void b53_br_fast_age(struct dsa_switch *ds, int port)
1982 {
1983         struct b53_device *dev = ds->priv;
1984
1985         if (b53_fast_age_port(dev, port))
1986                 dev_err(ds->dev, "fast ageing failed\n");
1987 }
1988 EXPORT_SYMBOL(b53_br_fast_age);
1989
1990 int b53_br_flags_pre(struct dsa_switch *ds, int port,
1991                      struct switchdev_brport_flags flags,
1992                      struct netlink_ext_ack *extack)
1993 {
1994         if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD | BR_LEARNING))
1995                 return -EINVAL;
1996
1997         return 0;
1998 }
1999 EXPORT_SYMBOL(b53_br_flags_pre);
2000
2001 int b53_br_flags(struct dsa_switch *ds, int port,
2002                  struct switchdev_brport_flags flags,
2003                  struct netlink_ext_ack *extack)
2004 {
2005         if (flags.mask & BR_FLOOD)
2006                 b53_port_set_ucast_flood(ds->priv, port,
2007                                          !!(flags.val & BR_FLOOD));
2008         if (flags.mask & BR_MCAST_FLOOD)
2009                 b53_port_set_mcast_flood(ds->priv, port,
2010                                          !!(flags.val & BR_MCAST_FLOOD));
2011         if (flags.mask & BR_LEARNING)
2012                 b53_port_set_learning(ds->priv, port,
2013                                       !!(flags.val & BR_LEARNING));
2014
2015         return 0;
2016 }
2017 EXPORT_SYMBOL(b53_br_flags);
2018
2019 static bool b53_possible_cpu_port(struct dsa_switch *ds, int port)
2020 {
2021         /* Broadcom switches will accept enabling Broadcom tags on the
2022          * following ports: 5, 7 and 8, any other port is not supported
2023          */
2024         switch (port) {
2025         case B53_CPU_PORT_25:
2026         case 7:
2027         case B53_CPU_PORT:
2028                 return true;
2029         }
2030
2031         return false;
2032 }
2033
2034 static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port,
2035                                      enum dsa_tag_protocol tag_protocol)
2036 {
2037         bool ret = b53_possible_cpu_port(ds, port);
2038
2039         if (!ret) {
2040                 dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n",
2041                          port);
2042                 return ret;
2043         }
2044
2045         switch (tag_protocol) {
2046         case DSA_TAG_PROTO_BRCM:
2047         case DSA_TAG_PROTO_BRCM_PREPEND:
2048                 dev_warn(ds->dev,
2049                          "Port %d is stacked to Broadcom tag switch\n", port);
2050                 ret = false;
2051                 break;
2052         default:
2053                 ret = true;
2054                 break;
2055         }
2056
2057         return ret;
2058 }
2059
2060 enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port,
2061                                            enum dsa_tag_protocol mprot)
2062 {
2063         struct b53_device *dev = ds->priv;
2064
2065         if (!b53_can_enable_brcm_tags(ds, port, mprot)) {
2066                 dev->tag_protocol = DSA_TAG_PROTO_NONE;
2067                 goto out;
2068         }
2069
2070         /* Older models require a different 6 byte tag */
2071         if (is5325(dev) || is5365(dev) || is63xx(dev)) {
2072                 dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY;
2073                 goto out;
2074         }
2075
2076         /* Broadcom BCM58xx chips have a flow accelerator on Port 8
2077          * which requires us to use the prepended Broadcom tag type
2078          */
2079         if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT) {
2080                 dev->tag_protocol = DSA_TAG_PROTO_BRCM_PREPEND;
2081                 goto out;
2082         }
2083
2084         dev->tag_protocol = DSA_TAG_PROTO_BRCM;
2085 out:
2086         return dev->tag_protocol;
2087 }
2088 EXPORT_SYMBOL(b53_get_tag_protocol);
2089
2090 int b53_mirror_add(struct dsa_switch *ds, int port,
2091                    struct dsa_mall_mirror_tc_entry *mirror, bool ingress)
2092 {
2093         struct b53_device *dev = ds->priv;
2094         u16 reg, loc;
2095
2096         if (ingress)
2097                 loc = B53_IG_MIR_CTL;
2098         else
2099                 loc = B53_EG_MIR_CTL;
2100
2101         b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
2102         reg |= BIT(port);
2103         b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2104
2105         b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
2106         reg &= ~CAP_PORT_MASK;
2107         reg |= mirror->to_local_port;
2108         reg |= MIRROR_EN;
2109         b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2110
2111         return 0;
2112 }
2113 EXPORT_SYMBOL(b53_mirror_add);
2114
2115 void b53_mirror_del(struct dsa_switch *ds, int port,
2116                     struct dsa_mall_mirror_tc_entry *mirror)
2117 {
2118         struct b53_device *dev = ds->priv;
2119         bool loc_disable = false, other_loc_disable = false;
2120         u16 reg, loc;
2121
2122         if (mirror->ingress)
2123                 loc = B53_IG_MIR_CTL;
2124         else
2125                 loc = B53_EG_MIR_CTL;
2126
2127         /* Update the desired ingress/egress register */
2128         b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
2129         reg &= ~BIT(port);
2130         if (!(reg & MIRROR_MASK))
2131                 loc_disable = true;
2132         b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2133
2134         /* Now look at the other one to know if we can disable mirroring
2135          * entirely
2136          */
2137         if (mirror->ingress)
2138                 b53_read16(dev, B53_MGMT_PAGE, B53_EG_MIR_CTL, &reg);
2139         else
2140                 b53_read16(dev, B53_MGMT_PAGE, B53_IG_MIR_CTL, &reg);
2141         if (!(reg & MIRROR_MASK))
2142                 other_loc_disable = true;
2143
2144         b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
2145         /* Both no longer have ports, let's disable mirroring */
2146         if (loc_disable && other_loc_disable) {
2147                 reg &= ~MIRROR_EN;
2148                 reg &= ~mirror->to_local_port;
2149         }
2150         b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2151 }
2152 EXPORT_SYMBOL(b53_mirror_del);
2153
2154 void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
2155 {
2156         struct b53_device *dev = ds->priv;
2157         u16 reg;
2158
2159         b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, &reg);
2160         if (enable)
2161                 reg |= BIT(port);
2162         else
2163                 reg &= ~BIT(port);
2164         b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
2165 }
2166 EXPORT_SYMBOL(b53_eee_enable_set);
2167
2168
2169 /* Returns 0 if EEE was not enabled, or 1 otherwise
2170  */
2171 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)
2172 {
2173         int ret;
2174
2175         ret = phy_init_eee(phy, 0);
2176         if (ret)
2177                 return 0;
2178
2179         b53_eee_enable_set(ds, port, true);
2180
2181         return 1;
2182 }
2183 EXPORT_SYMBOL(b53_eee_init);
2184
2185 int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
2186 {
2187         struct b53_device *dev = ds->priv;
2188         struct ethtool_eee *p = &dev->ports[port].eee;
2189         u16 reg;
2190
2191         if (is5325(dev) || is5365(dev))
2192                 return -EOPNOTSUPP;
2193
2194         b53_read16(dev, B53_EEE_PAGE, B53_EEE_LPI_INDICATE, &reg);
2195         e->eee_enabled = p->eee_enabled;
2196         e->eee_active = !!(reg & BIT(port));
2197
2198         return 0;
2199 }
2200 EXPORT_SYMBOL(b53_get_mac_eee);
2201
2202 int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
2203 {
2204         struct b53_device *dev = ds->priv;
2205         struct ethtool_eee *p = &dev->ports[port].eee;
2206
2207         if (is5325(dev) || is5365(dev))
2208                 return -EOPNOTSUPP;
2209
2210         p->eee_enabled = e->eee_enabled;
2211         b53_eee_enable_set(ds, port, e->eee_enabled);
2212
2213         return 0;
2214 }
2215 EXPORT_SYMBOL(b53_set_mac_eee);
2216
2217 static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu)
2218 {
2219         struct b53_device *dev = ds->priv;
2220         bool enable_jumbo;
2221         bool allow_10_100;
2222
2223         if (is5325(dev) || is5365(dev))
2224                 return -EOPNOTSUPP;
2225
2226         enable_jumbo = (mtu >= JMS_MIN_SIZE);
2227         allow_10_100 = (dev->chip_id == BCM583XX_DEVICE_ID);
2228
2229         return b53_set_jumbo(dev, enable_jumbo, allow_10_100);
2230 }
2231
2232 static int b53_get_max_mtu(struct dsa_switch *ds, int port)
2233 {
2234         return JMS_MAX_SIZE;
2235 }
2236
2237 static const struct dsa_switch_ops b53_switch_ops = {
2238         .get_tag_protocol       = b53_get_tag_protocol,
2239         .setup                  = b53_setup,
2240         .teardown               = b53_teardown,
2241         .get_strings            = b53_get_strings,
2242         .get_ethtool_stats      = b53_get_ethtool_stats,
2243         .get_sset_count         = b53_get_sset_count,
2244         .get_ethtool_phy_stats  = b53_get_ethtool_phy_stats,
2245         .phy_read               = b53_phy_read16,
2246         .phy_write              = b53_phy_write16,
2247         .adjust_link            = b53_adjust_link,
2248         .phylink_validate       = b53_phylink_validate,
2249         .phylink_mac_link_state = b53_phylink_mac_link_state,
2250         .phylink_mac_config     = b53_phylink_mac_config,
2251         .phylink_mac_an_restart = b53_phylink_mac_an_restart,
2252         .phylink_mac_link_down  = b53_phylink_mac_link_down,
2253         .phylink_mac_link_up    = b53_phylink_mac_link_up,
2254         .port_enable            = b53_enable_port,
2255         .port_disable           = b53_disable_port,
2256         .get_mac_eee            = b53_get_mac_eee,
2257         .set_mac_eee            = b53_set_mac_eee,
2258         .port_bridge_join       = b53_br_join,
2259         .port_bridge_leave      = b53_br_leave,
2260         .port_pre_bridge_flags  = b53_br_flags_pre,
2261         .port_bridge_flags      = b53_br_flags,
2262         .port_stp_state_set     = b53_br_set_stp_state,
2263         .port_fast_age          = b53_br_fast_age,
2264         .port_vlan_filtering    = b53_vlan_filtering,
2265         .port_vlan_add          = b53_vlan_add,
2266         .port_vlan_del          = b53_vlan_del,
2267         .port_fdb_dump          = b53_fdb_dump,
2268         .port_fdb_add           = b53_fdb_add,
2269         .port_fdb_del           = b53_fdb_del,
2270         .port_mirror_add        = b53_mirror_add,
2271         .port_mirror_del        = b53_mirror_del,
2272         .port_mdb_add           = b53_mdb_add,
2273         .port_mdb_del           = b53_mdb_del,
2274         .port_max_mtu           = b53_get_max_mtu,
2275         .port_change_mtu        = b53_change_mtu,
2276 };
2277
2278 struct b53_chip_data {
2279         u32 chip_id;
2280         const char *dev_name;
2281         u16 vlans;
2282         u16 enabled_ports;
2283         u8 imp_port;
2284         u8 cpu_port;
2285         u8 vta_regs[3];
2286         u8 arl_bins;
2287         u16 arl_buckets;
2288         u8 duplex_reg;
2289         u8 jumbo_pm_reg;
2290         u8 jumbo_size_reg;
2291 };
2292
2293 #define B53_VTA_REGS    \
2294         { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
2295 #define B53_VTA_REGS_9798 \
2296         { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
2297 #define B53_VTA_REGS_63XX \
2298         { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
2299
2300 static const struct b53_chip_data b53_switch_chips[] = {
2301         {
2302                 .chip_id = BCM5325_DEVICE_ID,
2303                 .dev_name = "BCM5325",
2304                 .vlans = 16,
2305                 .enabled_ports = 0x1f,
2306                 .arl_bins = 2,
2307                 .arl_buckets = 1024,
2308                 .imp_port = 5,
2309                 .cpu_port = B53_CPU_PORT_25,
2310                 .duplex_reg = B53_DUPLEX_STAT_FE,
2311         },
2312         {
2313                 .chip_id = BCM5365_DEVICE_ID,
2314                 .dev_name = "BCM5365",
2315                 .vlans = 256,
2316                 .enabled_ports = 0x1f,
2317                 .arl_bins = 2,
2318                 .arl_buckets = 1024,
2319                 .imp_port = 5,
2320                 .cpu_port = B53_CPU_PORT_25,
2321                 .duplex_reg = B53_DUPLEX_STAT_FE,
2322         },
2323         {
2324                 .chip_id = BCM5389_DEVICE_ID,
2325                 .dev_name = "BCM5389",
2326                 .vlans = 4096,
2327                 .enabled_ports = 0x1f,
2328                 .arl_bins = 4,
2329                 .arl_buckets = 1024,
2330                 .imp_port = 8,
2331                 .cpu_port = B53_CPU_PORT,
2332                 .vta_regs = B53_VTA_REGS,
2333                 .duplex_reg = B53_DUPLEX_STAT_GE,
2334                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2335                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2336         },
2337         {
2338                 .chip_id = BCM5395_DEVICE_ID,
2339                 .dev_name = "BCM5395",
2340                 .vlans = 4096,
2341                 .enabled_ports = 0x1f,
2342                 .arl_bins = 4,
2343                 .arl_buckets = 1024,
2344                 .imp_port = 8,
2345                 .cpu_port = B53_CPU_PORT,
2346                 .vta_regs = B53_VTA_REGS,
2347                 .duplex_reg = B53_DUPLEX_STAT_GE,
2348                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2349                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2350         },
2351         {
2352                 .chip_id = BCM5397_DEVICE_ID,
2353                 .dev_name = "BCM5397",
2354                 .vlans = 4096,
2355                 .enabled_ports = 0x1f,
2356                 .arl_bins = 4,
2357                 .arl_buckets = 1024,
2358                 .imp_port = 8,
2359                 .cpu_port = B53_CPU_PORT,
2360                 .vta_regs = B53_VTA_REGS_9798,
2361                 .duplex_reg = B53_DUPLEX_STAT_GE,
2362                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2363                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2364         },
2365         {
2366                 .chip_id = BCM5398_DEVICE_ID,
2367                 .dev_name = "BCM5398",
2368                 .vlans = 4096,
2369                 .enabled_ports = 0x7f,
2370                 .arl_bins = 4,
2371                 .arl_buckets = 1024,
2372                 .imp_port = 8,
2373                 .cpu_port = B53_CPU_PORT,
2374                 .vta_regs = B53_VTA_REGS_9798,
2375                 .duplex_reg = B53_DUPLEX_STAT_GE,
2376                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2377                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2378         },
2379         {
2380                 .chip_id = BCM53115_DEVICE_ID,
2381                 .dev_name = "BCM53115",
2382                 .vlans = 4096,
2383                 .enabled_ports = 0x1f,
2384                 .arl_bins = 4,
2385                 .arl_buckets = 1024,
2386                 .vta_regs = B53_VTA_REGS,
2387                 .imp_port = 8,
2388                 .cpu_port = B53_CPU_PORT,
2389                 .duplex_reg = B53_DUPLEX_STAT_GE,
2390                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2391                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2392         },
2393         {
2394                 .chip_id = BCM53125_DEVICE_ID,
2395                 .dev_name = "BCM53125",
2396                 .vlans = 4096,
2397                 .enabled_ports = 0xff,
2398                 .arl_bins = 4,
2399                 .arl_buckets = 1024,
2400                 .imp_port = 8,
2401                 .cpu_port = B53_CPU_PORT,
2402                 .vta_regs = B53_VTA_REGS,
2403                 .duplex_reg = B53_DUPLEX_STAT_GE,
2404                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2405                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2406         },
2407         {
2408                 .chip_id = BCM53128_DEVICE_ID,
2409                 .dev_name = "BCM53128",
2410                 .vlans = 4096,
2411                 .enabled_ports = 0x1ff,
2412                 .arl_bins = 4,
2413                 .arl_buckets = 1024,
2414                 .imp_port = 8,
2415                 .cpu_port = B53_CPU_PORT,
2416                 .vta_regs = B53_VTA_REGS,
2417                 .duplex_reg = B53_DUPLEX_STAT_GE,
2418                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2419                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2420         },
2421         {
2422                 .chip_id = BCM63XX_DEVICE_ID,
2423                 .dev_name = "BCM63xx",
2424                 .vlans = 4096,
2425                 .enabled_ports = 0, /* pdata must provide them */
2426                 .arl_bins = 4,
2427                 .arl_buckets = 1024,
2428                 .imp_port = 8,
2429                 .cpu_port = B53_CPU_PORT,
2430                 .vta_regs = B53_VTA_REGS_63XX,
2431                 .duplex_reg = B53_DUPLEX_STAT_63XX,
2432                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
2433                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
2434         },
2435         {
2436                 .chip_id = BCM53010_DEVICE_ID,
2437                 .dev_name = "BCM53010",
2438                 .vlans = 4096,
2439                 .enabled_ports = 0x1f,
2440                 .arl_bins = 4,
2441                 .arl_buckets = 1024,
2442                 .imp_port = 8,
2443                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2444                 .vta_regs = B53_VTA_REGS,
2445                 .duplex_reg = B53_DUPLEX_STAT_GE,
2446                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2447                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2448         },
2449         {
2450                 .chip_id = BCM53011_DEVICE_ID,
2451                 .dev_name = "BCM53011",
2452                 .vlans = 4096,
2453                 .enabled_ports = 0x1bf,
2454                 .arl_bins = 4,
2455                 .arl_buckets = 1024,
2456                 .imp_port = 8,
2457                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2458                 .vta_regs = B53_VTA_REGS,
2459                 .duplex_reg = B53_DUPLEX_STAT_GE,
2460                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2461                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2462         },
2463         {
2464                 .chip_id = BCM53012_DEVICE_ID,
2465                 .dev_name = "BCM53012",
2466                 .vlans = 4096,
2467                 .enabled_ports = 0x1bf,
2468                 .arl_bins = 4,
2469                 .arl_buckets = 1024,
2470                 .imp_port = 8,
2471                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2472                 .vta_regs = B53_VTA_REGS,
2473                 .duplex_reg = B53_DUPLEX_STAT_GE,
2474                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2475                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2476         },
2477         {
2478                 .chip_id = BCM53018_DEVICE_ID,
2479                 .dev_name = "BCM53018",
2480                 .vlans = 4096,
2481                 .enabled_ports = 0x1f,
2482                 .arl_bins = 4,
2483                 .arl_buckets = 1024,
2484                 .imp_port = 8,
2485                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2486                 .vta_regs = B53_VTA_REGS,
2487                 .duplex_reg = B53_DUPLEX_STAT_GE,
2488                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2489                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2490         },
2491         {
2492                 .chip_id = BCM53019_DEVICE_ID,
2493                 .dev_name = "BCM53019",
2494                 .vlans = 4096,
2495                 .enabled_ports = 0x1f,
2496                 .arl_bins = 4,
2497                 .arl_buckets = 1024,
2498                 .imp_port = 8,
2499                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2500                 .vta_regs = B53_VTA_REGS,
2501                 .duplex_reg = B53_DUPLEX_STAT_GE,
2502                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2503                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2504         },
2505         {
2506                 .chip_id = BCM58XX_DEVICE_ID,
2507                 .dev_name = "BCM585xx/586xx/88312",
2508                 .vlans  = 4096,
2509                 .enabled_ports = 0x1ff,
2510                 .arl_bins = 4,
2511                 .arl_buckets = 1024,
2512                 .imp_port = 8,
2513                 .cpu_port = B53_CPU_PORT,
2514                 .vta_regs = B53_VTA_REGS,
2515                 .duplex_reg = B53_DUPLEX_STAT_GE,
2516                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2517                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2518         },
2519         {
2520                 .chip_id = BCM583XX_DEVICE_ID,
2521                 .dev_name = "BCM583xx/11360",
2522                 .vlans = 4096,
2523                 .enabled_ports = 0x103,
2524                 .arl_bins = 4,
2525                 .arl_buckets = 1024,
2526                 .imp_port = 8,
2527                 .cpu_port = B53_CPU_PORT,
2528                 .vta_regs = B53_VTA_REGS,
2529                 .duplex_reg = B53_DUPLEX_STAT_GE,
2530                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2531                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2532         },
2533         /* Starfighter 2 */
2534         {
2535                 .chip_id = BCM4908_DEVICE_ID,
2536                 .dev_name = "BCM4908",
2537                 .vlans = 4096,
2538                 .enabled_ports = 0x1bf,
2539                 .arl_bins = 4,
2540                 .arl_buckets = 256,
2541                 .imp_port = 8,
2542                 .cpu_port = 8, /* TODO: ports 4, 5, 8 */
2543                 .vta_regs = B53_VTA_REGS,
2544                 .duplex_reg = B53_DUPLEX_STAT_GE,
2545                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2546                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2547         },
2548         {
2549                 .chip_id = BCM7445_DEVICE_ID,
2550                 .dev_name = "BCM7445",
2551                 .vlans  = 4096,
2552                 .enabled_ports = 0x1ff,
2553                 .arl_bins = 4,
2554                 .arl_buckets = 1024,
2555                 .imp_port = 8,
2556                 .cpu_port = B53_CPU_PORT,
2557                 .vta_regs = B53_VTA_REGS,
2558                 .duplex_reg = B53_DUPLEX_STAT_GE,
2559                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2560                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2561         },
2562         {
2563                 .chip_id = BCM7278_DEVICE_ID,
2564                 .dev_name = "BCM7278",
2565                 .vlans = 4096,
2566                 .enabled_ports = 0x1ff,
2567                 .arl_bins = 4,
2568                 .arl_buckets = 256,
2569                 .imp_port = 8,
2570                 .cpu_port = B53_CPU_PORT,
2571                 .vta_regs = B53_VTA_REGS,
2572                 .duplex_reg = B53_DUPLEX_STAT_GE,
2573                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2574                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2575         },
2576 };
2577
2578 static int b53_switch_init(struct b53_device *dev)
2579 {
2580         unsigned int i;
2581         int ret;
2582
2583         for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
2584                 const struct b53_chip_data *chip = &b53_switch_chips[i];
2585
2586                 if (chip->chip_id == dev->chip_id) {
2587                         if (!dev->enabled_ports)
2588                                 dev->enabled_ports = chip->enabled_ports;
2589                         dev->name = chip->dev_name;
2590                         dev->duplex_reg = chip->duplex_reg;
2591                         dev->vta_regs[0] = chip->vta_regs[0];
2592                         dev->vta_regs[1] = chip->vta_regs[1];
2593                         dev->vta_regs[2] = chip->vta_regs[2];
2594                         dev->jumbo_pm_reg = chip->jumbo_pm_reg;
2595                         dev->imp_port = chip->imp_port;
2596                         dev->cpu_port = chip->cpu_port;
2597                         dev->num_vlans = chip->vlans;
2598                         dev->num_arl_bins = chip->arl_bins;
2599                         dev->num_arl_buckets = chip->arl_buckets;
2600                         break;
2601                 }
2602         }
2603
2604         /* check which BCM5325x version we have */
2605         if (is5325(dev)) {
2606                 u8 vc4;
2607
2608                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
2609
2610                 /* check reserved bits */
2611                 switch (vc4 & 3) {
2612                 case 1:
2613                         /* BCM5325E */
2614                         break;
2615                 case 3:
2616                         /* BCM5325F - do not use port 4 */
2617                         dev->enabled_ports &= ~BIT(4);
2618                         break;
2619                 default:
2620 /* On the BCM47XX SoCs this is the supported internal switch.*/
2621 #ifndef CONFIG_BCM47XX
2622                         /* BCM5325M */
2623                         return -EINVAL;
2624 #else
2625                         break;
2626 #endif
2627                 }
2628         } else if (dev->chip_id == BCM53115_DEVICE_ID) {
2629                 u64 strap_value;
2630
2631                 b53_read48(dev, B53_STAT_PAGE, B53_STRAP_VALUE, &strap_value);
2632                 /* use second IMP port if GMII is enabled */
2633                 if (strap_value & SV_GMII_CTRL_115)
2634                         dev->cpu_port = 5;
2635         }
2636
2637         dev->enabled_ports |= BIT(dev->cpu_port);
2638         dev->num_ports = fls(dev->enabled_ports);
2639
2640         dev->ds->num_ports = min_t(unsigned int, dev->num_ports, DSA_MAX_PORTS);
2641
2642         /* Include non standard CPU port built-in PHYs to be probed */
2643         if (is539x(dev) || is531x5(dev)) {
2644                 for (i = 0; i < dev->num_ports; i++) {
2645                         if (!(dev->ds->phys_mii_mask & BIT(i)) &&
2646                             !b53_possible_cpu_port(dev->ds, i))
2647                                 dev->ds->phys_mii_mask |= BIT(i);
2648                 }
2649         }
2650
2651         dev->ports = devm_kcalloc(dev->dev,
2652                                   dev->num_ports, sizeof(struct b53_port),
2653                                   GFP_KERNEL);
2654         if (!dev->ports)
2655                 return -ENOMEM;
2656
2657         dev->vlans = devm_kcalloc(dev->dev,
2658                                   dev->num_vlans, sizeof(struct b53_vlan),
2659                                   GFP_KERNEL);
2660         if (!dev->vlans)
2661                 return -ENOMEM;
2662
2663         dev->reset_gpio = b53_switch_get_reset_gpio(dev);
2664         if (dev->reset_gpio >= 0) {
2665                 ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
2666                                             GPIOF_OUT_INIT_HIGH, "robo_reset");
2667                 if (ret)
2668                         return ret;
2669         }
2670
2671         return 0;
2672 }
2673
2674 struct b53_device *b53_switch_alloc(struct device *base,
2675                                     const struct b53_io_ops *ops,
2676                                     void *priv)
2677 {
2678         struct dsa_switch *ds;
2679         struct b53_device *dev;
2680
2681         ds = devm_kzalloc(base, sizeof(*ds), GFP_KERNEL);
2682         if (!ds)
2683                 return NULL;
2684
2685         ds->dev = base;
2686
2687         dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL);
2688         if (!dev)
2689                 return NULL;
2690
2691         ds->priv = dev;
2692         dev->dev = base;
2693
2694         dev->ds = ds;
2695         dev->priv = priv;
2696         dev->ops = ops;
2697         ds->ops = &b53_switch_ops;
2698         dev->vlan_enabled = true;
2699         /* Let DSA handle the case were multiple bridges span the same switch
2700          * device and different VLAN awareness settings are requested, which
2701          * would be breaking filtering semantics for any of the other bridge
2702          * devices. (not hardware supported)
2703          */
2704         ds->vlan_filtering_is_global = true;
2705
2706         mutex_init(&dev->reg_mutex);
2707         mutex_init(&dev->stats_mutex);
2708
2709         return dev;
2710 }
2711 EXPORT_SYMBOL(b53_switch_alloc);
2712
2713 int b53_switch_detect(struct b53_device *dev)
2714 {
2715         u32 id32;
2716         u16 tmp;
2717         u8 id8;
2718         int ret;
2719
2720         ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
2721         if (ret)
2722                 return ret;
2723
2724         switch (id8) {
2725         case 0:
2726                 /* BCM5325 and BCM5365 do not have this register so reads
2727                  * return 0. But the read operation did succeed, so assume this
2728                  * is one of them.
2729                  *
2730                  * Next check if we can write to the 5325's VTA register; for
2731                  * 5365 it is read only.
2732                  */
2733                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
2734                 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
2735
2736                 if (tmp == 0xf)
2737                         dev->chip_id = BCM5325_DEVICE_ID;
2738                 else
2739                         dev->chip_id = BCM5365_DEVICE_ID;
2740                 break;
2741         case BCM5389_DEVICE_ID:
2742         case BCM5395_DEVICE_ID:
2743         case BCM5397_DEVICE_ID:
2744         case BCM5398_DEVICE_ID:
2745                 dev->chip_id = id8;
2746                 break;
2747         default:
2748                 ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
2749                 if (ret)
2750                         return ret;
2751
2752                 switch (id32) {
2753                 case BCM53115_DEVICE_ID:
2754                 case BCM53125_DEVICE_ID:
2755                 case BCM53128_DEVICE_ID:
2756                 case BCM53010_DEVICE_ID:
2757                 case BCM53011_DEVICE_ID:
2758                 case BCM53012_DEVICE_ID:
2759                 case BCM53018_DEVICE_ID:
2760                 case BCM53019_DEVICE_ID:
2761                         dev->chip_id = id32;
2762                         break;
2763                 default:
2764                         dev_err(dev->dev,
2765                                 "unsupported switch detected (BCM53%02x/BCM%x)\n",
2766                                 id8, id32);
2767                         return -ENODEV;
2768                 }
2769         }
2770
2771         if (dev->chip_id == BCM5325_DEVICE_ID)
2772                 return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
2773                                  &dev->core_rev);
2774         else
2775                 return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
2776                                  &dev->core_rev);
2777 }
2778 EXPORT_SYMBOL(b53_switch_detect);
2779
2780 int b53_switch_register(struct b53_device *dev)
2781 {
2782         int ret;
2783
2784         if (dev->pdata) {
2785                 dev->chip_id = dev->pdata->chip_id;
2786                 dev->enabled_ports = dev->pdata->enabled_ports;
2787         }
2788
2789         if (!dev->chip_id && b53_switch_detect(dev))
2790                 return -EINVAL;
2791
2792         ret = b53_switch_init(dev);
2793         if (ret)
2794                 return ret;
2795
2796         dev_info(dev->dev, "found switch: %s, rev %i\n",
2797                  dev->name, dev->core_rev);
2798
2799         return dsa_register_switch(dev->ds);
2800 }
2801 EXPORT_SYMBOL(b53_switch_register);
2802
2803 MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
2804 MODULE_DESCRIPTION("B53 switch library");
2805 MODULE_LICENSE("Dual BSD/GPL");