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) && dsa_is_cpu_port(ds, 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         }
1295
1296         /* Re-negotiate EEE if it was enabled already */
1297         p->eee_enabled = b53_eee_init(ds, port, phydev);
1298 }
1299
1300 void b53_port_event(struct dsa_switch *ds, int port)
1301 {
1302         struct b53_device *dev = ds->priv;
1303         bool link;
1304         u16 sts;
1305
1306         b53_read16(dev, B53_STAT_PAGE, B53_LINK_STAT, &sts);
1307         link = !!(sts & BIT(port));
1308         dsa_port_phylink_mac_change(ds, port, link);
1309 }
1310 EXPORT_SYMBOL(b53_port_event);
1311
1312 static void b53_phylink_get_caps(struct dsa_switch *ds, int port,
1313                                  struct phylink_config *config)
1314 {
1315         struct b53_device *dev = ds->priv;
1316
1317         /* Internal ports need GMII for PHYLIB */
1318         __set_bit(PHY_INTERFACE_MODE_GMII, config->supported_interfaces);
1319
1320         /* These switches appear to support MII and RevMII too, but beyond
1321          * this, the code gives very few clues. FIXME: We probably need more
1322          * interface modes here.
1323          *
1324          * According to b53_srab_mux_init(), ports 3..5 can support:
1325          *  SGMII, MII, GMII, RGMII or INTERNAL depending on the MUX setting.
1326          * However, the interface mode read from the MUX configuration is
1327          * not passed back to DSA, so phylink uses NA.
1328          * DT can specify RGMII for ports 0, 1.
1329          * For MDIO, port 8 can be RGMII_TXID.
1330          */
1331         __set_bit(PHY_INTERFACE_MODE_MII, config->supported_interfaces);
1332         __set_bit(PHY_INTERFACE_MODE_REVMII, config->supported_interfaces);
1333
1334         config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
1335                 MAC_10 | MAC_100;
1336
1337         /* 5325/5365 are not capable of gigabit speeds, everything else is.
1338          * Note: the original code also exclulded Gigagbit for MII, RevMII
1339          * and 802.3z modes. MII and RevMII are not able to work above 100M,
1340          * so will be excluded by the generic validator implementation.
1341          * However, the exclusion of Gigabit for 802.3z just seems wrong.
1342          */
1343         if (!(is5325(dev) || is5365(dev)))
1344                 config->mac_capabilities |= MAC_1000;
1345
1346         /* Get the implementation specific capabilities */
1347         if (dev->ops->phylink_get_caps)
1348                 dev->ops->phylink_get_caps(dev, port, config);
1349
1350         /* This driver does not make use of the speed, duplex, pause or the
1351          * advertisement in its mac_config, so it is safe to mark this driver
1352          * as non-legacy.
1353          */
1354         config->legacy_pre_march2020 = false;
1355 }
1356
1357 static struct phylink_pcs *b53_phylink_mac_select_pcs(struct dsa_switch *ds,
1358                                                       int port,
1359                                                       phy_interface_t interface)
1360 {
1361         struct b53_device *dev = ds->priv;
1362
1363         if (!dev->ops->phylink_mac_select_pcs)
1364                 return NULL;
1365
1366         return dev->ops->phylink_mac_select_pcs(dev, port, interface);
1367 }
1368
1369 void b53_phylink_mac_config(struct dsa_switch *ds, int port,
1370                             unsigned int mode,
1371                             const struct phylink_link_state *state)
1372 {
1373 }
1374 EXPORT_SYMBOL(b53_phylink_mac_config);
1375
1376 void b53_phylink_mac_link_down(struct dsa_switch *ds, int port,
1377                                unsigned int mode,
1378                                phy_interface_t interface)
1379 {
1380         struct b53_device *dev = ds->priv;
1381
1382         if (mode == MLO_AN_PHY)
1383                 return;
1384
1385         if (mode == MLO_AN_FIXED) {
1386                 b53_force_link(dev, port, false);
1387                 return;
1388         }
1389
1390         if (phy_interface_mode_is_8023z(interface) &&
1391             dev->ops->serdes_link_set)
1392                 dev->ops->serdes_link_set(dev, port, mode, interface, false);
1393 }
1394 EXPORT_SYMBOL(b53_phylink_mac_link_down);
1395
1396 void b53_phylink_mac_link_up(struct dsa_switch *ds, int port,
1397                              unsigned int mode,
1398                              phy_interface_t interface,
1399                              struct phy_device *phydev,
1400                              int speed, int duplex,
1401                              bool tx_pause, bool rx_pause)
1402 {
1403         struct b53_device *dev = ds->priv;
1404
1405         if (mode == MLO_AN_PHY)
1406                 return;
1407
1408         if (mode == MLO_AN_FIXED) {
1409                 b53_force_port_config(dev, port, speed, duplex,
1410                                       tx_pause, rx_pause);
1411                 b53_force_link(dev, port, true);
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, true);
1418 }
1419 EXPORT_SYMBOL(b53_phylink_mac_link_up);
1420
1421 int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1422                        struct netlink_ext_ack *extack)
1423 {
1424         struct b53_device *dev = ds->priv;
1425
1426         b53_enable_vlan(dev, port, dev->vlan_enabled, vlan_filtering);
1427
1428         return 0;
1429 }
1430 EXPORT_SYMBOL(b53_vlan_filtering);
1431
1432 static int b53_vlan_prepare(struct dsa_switch *ds, int port,
1433                             const struct switchdev_obj_port_vlan *vlan)
1434 {
1435         struct b53_device *dev = ds->priv;
1436
1437         if ((is5325(dev) || is5365(dev)) && vlan->vid == 0)
1438                 return -EOPNOTSUPP;
1439
1440         /* Port 7 on 7278 connects to the ASP's UniMAC which is not capable of
1441          * receiving VLAN tagged frames at all, we can still allow the port to
1442          * be configured for egress untagged.
1443          */
1444         if (dev->chip_id == BCM7278_DEVICE_ID && port == 7 &&
1445             !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED))
1446                 return -EINVAL;
1447
1448         if (vlan->vid >= dev->num_vlans)
1449                 return -ERANGE;
1450
1451         b53_enable_vlan(dev, port, true, ds->vlan_filtering);
1452
1453         return 0;
1454 }
1455
1456 int b53_vlan_add(struct dsa_switch *ds, int port,
1457                  const struct switchdev_obj_port_vlan *vlan,
1458                  struct netlink_ext_ack *extack)
1459 {
1460         struct b53_device *dev = ds->priv;
1461         bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1462         bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1463         struct b53_vlan *vl;
1464         int err;
1465
1466         err = b53_vlan_prepare(ds, port, vlan);
1467         if (err)
1468                 return err;
1469
1470         vl = &dev->vlans[vlan->vid];
1471
1472         b53_get_vlan_entry(dev, vlan->vid, vl);
1473
1474         if (vlan->vid == 0 && vlan->vid == b53_default_pvid(dev))
1475                 untagged = true;
1476
1477         vl->members |= BIT(port);
1478         if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port))
1479                 vl->untag |= BIT(port);
1480         else
1481                 vl->untag &= ~BIT(port);
1482
1483         b53_set_vlan_entry(dev, vlan->vid, vl);
1484         b53_fast_age_vlan(dev, vlan->vid);
1485
1486         if (pvid && !dsa_is_cpu_port(ds, port)) {
1487                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1488                             vlan->vid);
1489                 b53_fast_age_vlan(dev, vlan->vid);
1490         }
1491
1492         return 0;
1493 }
1494 EXPORT_SYMBOL(b53_vlan_add);
1495
1496 int b53_vlan_del(struct dsa_switch *ds, int port,
1497                  const struct switchdev_obj_port_vlan *vlan)
1498 {
1499         struct b53_device *dev = ds->priv;
1500         bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1501         struct b53_vlan *vl;
1502         u16 pvid;
1503
1504         b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
1505
1506         vl = &dev->vlans[vlan->vid];
1507
1508         b53_get_vlan_entry(dev, vlan->vid, vl);
1509
1510         vl->members &= ~BIT(port);
1511
1512         if (pvid == vlan->vid)
1513                 pvid = b53_default_pvid(dev);
1514
1515         if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port))
1516                 vl->untag &= ~(BIT(port));
1517
1518         b53_set_vlan_entry(dev, vlan->vid, vl);
1519         b53_fast_age_vlan(dev, vlan->vid);
1520
1521         b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid);
1522         b53_fast_age_vlan(dev, pvid);
1523
1524         return 0;
1525 }
1526 EXPORT_SYMBOL(b53_vlan_del);
1527
1528 /* Address Resolution Logic routines. Caller must hold &dev->arl_mutex. */
1529 static int b53_arl_op_wait(struct b53_device *dev)
1530 {
1531         unsigned int timeout = 10;
1532         u8 reg;
1533
1534         do {
1535                 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1536                 if (!(reg & ARLTBL_START_DONE))
1537                         return 0;
1538
1539                 usleep_range(1000, 2000);
1540         } while (timeout--);
1541
1542         dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg);
1543
1544         return -ETIMEDOUT;
1545 }
1546
1547 static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
1548 {
1549         u8 reg;
1550
1551         if (op > ARLTBL_RW)
1552                 return -EINVAL;
1553
1554         b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1555         reg |= ARLTBL_START_DONE;
1556         if (op)
1557                 reg |= ARLTBL_RW;
1558         else
1559                 reg &= ~ARLTBL_RW;
1560         if (dev->vlan_enabled)
1561                 reg &= ~ARLTBL_IVL_SVL_SELECT;
1562         else
1563                 reg |= ARLTBL_IVL_SVL_SELECT;
1564         b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg);
1565
1566         return b53_arl_op_wait(dev);
1567 }
1568
1569 static int b53_arl_read(struct b53_device *dev, u64 mac,
1570                         u16 vid, struct b53_arl_entry *ent, u8 *idx)
1571 {
1572         DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
1573         unsigned int i;
1574         int ret;
1575
1576         ret = b53_arl_op_wait(dev);
1577         if (ret)
1578                 return ret;
1579
1580         bitmap_zero(free_bins, dev->num_arl_bins);
1581
1582         /* Read the bins */
1583         for (i = 0; i < dev->num_arl_bins; i++) {
1584                 u64 mac_vid;
1585                 u32 fwd_entry;
1586
1587                 b53_read64(dev, B53_ARLIO_PAGE,
1588                            B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
1589                 b53_read32(dev, B53_ARLIO_PAGE,
1590                            B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
1591                 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1592
1593                 if (!(fwd_entry & ARLTBL_VALID)) {
1594                         set_bit(i, free_bins);
1595                         continue;
1596                 }
1597                 if ((mac_vid & ARLTBL_MAC_MASK) != mac)
1598                         continue;
1599                 if (dev->vlan_enabled &&
1600                     ((mac_vid >> ARLTBL_VID_S) & ARLTBL_VID_MASK) != vid)
1601                         continue;
1602                 *idx = i;
1603                 return 0;
1604         }
1605
1606         *idx = find_first_bit(free_bins, dev->num_arl_bins);
1607         return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT;
1608 }
1609
1610 static int b53_arl_op(struct b53_device *dev, int op, int port,
1611                       const unsigned char *addr, u16 vid, bool is_valid)
1612 {
1613         struct b53_arl_entry ent;
1614         u32 fwd_entry;
1615         u64 mac, mac_vid = 0;
1616         u8 idx = 0;
1617         int ret;
1618
1619         /* Convert the array into a 64-bit MAC */
1620         mac = ether_addr_to_u64(addr);
1621
1622         /* Perform a read for the given MAC and VID */
1623         b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
1624         b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
1625
1626         /* Issue a read operation for this MAC */
1627         ret = b53_arl_rw_op(dev, 1);
1628         if (ret)
1629                 return ret;
1630
1631         ret = b53_arl_read(dev, mac, vid, &ent, &idx);
1632
1633         /* If this is a read, just finish now */
1634         if (op)
1635                 return ret;
1636
1637         switch (ret) {
1638         case -ETIMEDOUT:
1639                 return ret;
1640         case -ENOSPC:
1641                 dev_dbg(dev->dev, "{%pM,%.4d} no space left in ARL\n",
1642                         addr, vid);
1643                 return is_valid ? ret : 0;
1644         case -ENOENT:
1645                 /* We could not find a matching MAC, so reset to a new entry */
1646                 dev_dbg(dev->dev, "{%pM,%.4d} not found, using idx: %d\n",
1647                         addr, vid, idx);
1648                 fwd_entry = 0;
1649                 break;
1650         default:
1651                 dev_dbg(dev->dev, "{%pM,%.4d} found, using idx: %d\n",
1652                         addr, vid, idx);
1653                 break;
1654         }
1655
1656         /* For multicast address, the port is a bitmask and the validity
1657          * is determined by having at least one port being still active
1658          */
1659         if (!is_multicast_ether_addr(addr)) {
1660                 ent.port = port;
1661                 ent.is_valid = is_valid;
1662         } else {
1663                 if (is_valid)
1664                         ent.port |= BIT(port);
1665                 else
1666                         ent.port &= ~BIT(port);
1667
1668                 ent.is_valid = !!(ent.port);
1669         }
1670
1671         ent.vid = vid;
1672         ent.is_static = true;
1673         ent.is_age = false;
1674         memcpy(ent.mac, addr, ETH_ALEN);
1675         b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
1676
1677         b53_write64(dev, B53_ARLIO_PAGE,
1678                     B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
1679         b53_write32(dev, B53_ARLIO_PAGE,
1680                     B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
1681
1682         return b53_arl_rw_op(dev, 0);
1683 }
1684
1685 int b53_fdb_add(struct dsa_switch *ds, int port,
1686                 const unsigned char *addr, u16 vid,
1687                 struct dsa_db db)
1688 {
1689         struct b53_device *priv = ds->priv;
1690         int ret;
1691
1692         /* 5325 and 5365 require some more massaging, but could
1693          * be supported eventually
1694          */
1695         if (is5325(priv) || is5365(priv))
1696                 return -EOPNOTSUPP;
1697
1698         mutex_lock(&priv->arl_mutex);
1699         ret = b53_arl_op(priv, 0, port, addr, vid, true);
1700         mutex_unlock(&priv->arl_mutex);
1701
1702         return ret;
1703 }
1704 EXPORT_SYMBOL(b53_fdb_add);
1705
1706 int b53_fdb_del(struct dsa_switch *ds, int port,
1707                 const unsigned char *addr, u16 vid,
1708                 struct dsa_db db)
1709 {
1710         struct b53_device *priv = ds->priv;
1711         int ret;
1712
1713         mutex_lock(&priv->arl_mutex);
1714         ret = b53_arl_op(priv, 0, port, addr, vid, false);
1715         mutex_unlock(&priv->arl_mutex);
1716
1717         return ret;
1718 }
1719 EXPORT_SYMBOL(b53_fdb_del);
1720
1721 static int b53_arl_search_wait(struct b53_device *dev)
1722 {
1723         unsigned int timeout = 1000;
1724         u8 reg;
1725
1726         do {
1727                 b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, &reg);
1728                 if (!(reg & ARL_SRCH_STDN))
1729                         return 0;
1730
1731                 if (reg & ARL_SRCH_VLID)
1732                         return 0;
1733
1734                 usleep_range(1000, 2000);
1735         } while (timeout--);
1736
1737         return -ETIMEDOUT;
1738 }
1739
1740 static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
1741                               struct b53_arl_entry *ent)
1742 {
1743         u64 mac_vid;
1744         u32 fwd_entry;
1745
1746         b53_read64(dev, B53_ARLIO_PAGE,
1747                    B53_ARL_SRCH_RSTL_MACVID(idx), &mac_vid);
1748         b53_read32(dev, B53_ARLIO_PAGE,
1749                    B53_ARL_SRCH_RSTL(idx), &fwd_entry);
1750         b53_arl_to_entry(ent, mac_vid, fwd_entry);
1751 }
1752
1753 static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
1754                         dsa_fdb_dump_cb_t *cb, void *data)
1755 {
1756         if (!ent->is_valid)
1757                 return 0;
1758
1759         if (port != ent->port)
1760                 return 0;
1761
1762         return cb(ent->mac, ent->vid, ent->is_static, data);
1763 }
1764
1765 int b53_fdb_dump(struct dsa_switch *ds, int port,
1766                  dsa_fdb_dump_cb_t *cb, void *data)
1767 {
1768         struct b53_device *priv = ds->priv;
1769         struct b53_arl_entry results[2];
1770         unsigned int count = 0;
1771         int ret;
1772         u8 reg;
1773
1774         mutex_lock(&priv->arl_mutex);
1775
1776         /* Start search operation */
1777         reg = ARL_SRCH_STDN;
1778         b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
1779
1780         do {
1781                 ret = b53_arl_search_wait(priv);
1782                 if (ret)
1783                         break;
1784
1785                 b53_arl_search_rd(priv, 0, &results[0]);
1786                 ret = b53_fdb_copy(port, &results[0], cb, data);
1787                 if (ret)
1788                         break;
1789
1790                 if (priv->num_arl_bins > 2) {
1791                         b53_arl_search_rd(priv, 1, &results[1]);
1792                         ret = b53_fdb_copy(port, &results[1], cb, data);
1793                         if (ret)
1794                                 break;
1795
1796                         if (!results[0].is_valid && !results[1].is_valid)
1797                                 break;
1798                 }
1799
1800         } while (count++ < b53_max_arl_entries(priv) / 2);
1801
1802         mutex_unlock(&priv->arl_mutex);
1803
1804         return 0;
1805 }
1806 EXPORT_SYMBOL(b53_fdb_dump);
1807
1808 int b53_mdb_add(struct dsa_switch *ds, int port,
1809                 const struct switchdev_obj_port_mdb *mdb,
1810                 struct dsa_db db)
1811 {
1812         struct b53_device *priv = ds->priv;
1813         int ret;
1814
1815         /* 5325 and 5365 require some more massaging, but could
1816          * be supported eventually
1817          */
1818         if (is5325(priv) || is5365(priv))
1819                 return -EOPNOTSUPP;
1820
1821         mutex_lock(&priv->arl_mutex);
1822         ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
1823         mutex_unlock(&priv->arl_mutex);
1824
1825         return ret;
1826 }
1827 EXPORT_SYMBOL(b53_mdb_add);
1828
1829 int b53_mdb_del(struct dsa_switch *ds, int port,
1830                 const struct switchdev_obj_port_mdb *mdb,
1831                 struct dsa_db db)
1832 {
1833         struct b53_device *priv = ds->priv;
1834         int ret;
1835
1836         mutex_lock(&priv->arl_mutex);
1837         ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
1838         mutex_unlock(&priv->arl_mutex);
1839         if (ret)
1840                 dev_err(ds->dev, "failed to delete MDB entry\n");
1841
1842         return ret;
1843 }
1844 EXPORT_SYMBOL(b53_mdb_del);
1845
1846 int b53_br_join(struct dsa_switch *ds, int port, struct dsa_bridge bridge,
1847                 bool *tx_fwd_offload, struct netlink_ext_ack *extack)
1848 {
1849         struct b53_device *dev = ds->priv;
1850         s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
1851         u16 pvlan, reg;
1852         unsigned int i;
1853
1854         /* On 7278, port 7 which connects to the ASP should only receive
1855          * traffic from matching CFP rules.
1856          */
1857         if (dev->chip_id == BCM7278_DEVICE_ID && port == 7)
1858                 return -EINVAL;
1859
1860         /* Make this port leave the all VLANs join since we will have proper
1861          * VLAN entries from now on
1862          */
1863         if (is58xx(dev)) {
1864                 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1865                 reg &= ~BIT(port);
1866                 if ((reg & BIT(cpu_port)) == BIT(cpu_port))
1867                         reg &= ~BIT(cpu_port);
1868                 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1869         }
1870
1871         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1872
1873         b53_for_each_port(dev, i) {
1874                 if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
1875                         continue;
1876
1877                 /* Add this local port to the remote port VLAN control
1878                  * membership and update the remote port bitmask
1879                  */
1880                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1881                 reg |= BIT(port);
1882                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1883                 dev->ports[i].vlan_ctl_mask = reg;
1884
1885                 pvlan |= BIT(i);
1886         }
1887
1888         /* Configure the local port VLAN control membership to include
1889          * remote ports and update the local port bitmask
1890          */
1891         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1892         dev->ports[port].vlan_ctl_mask = pvlan;
1893
1894         return 0;
1895 }
1896 EXPORT_SYMBOL(b53_br_join);
1897
1898 void b53_br_leave(struct dsa_switch *ds, int port, struct dsa_bridge bridge)
1899 {
1900         struct b53_device *dev = ds->priv;
1901         struct b53_vlan *vl = &dev->vlans[0];
1902         s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
1903         unsigned int i;
1904         u16 pvlan, reg, pvid;
1905
1906         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1907
1908         b53_for_each_port(dev, i) {
1909                 /* Don't touch the remaining ports */
1910                 if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
1911                         continue;
1912
1913                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1914                 reg &= ~BIT(port);
1915                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1916                 dev->ports[port].vlan_ctl_mask = reg;
1917
1918                 /* Prevent self removal to preserve isolation */
1919                 if (port != i)
1920                         pvlan &= ~BIT(i);
1921         }
1922
1923         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1924         dev->ports[port].vlan_ctl_mask = pvlan;
1925
1926         pvid = b53_default_pvid(dev);
1927
1928         /* Make this port join all VLANs without VLAN entries */
1929         if (is58xx(dev)) {
1930                 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1931                 reg |= BIT(port);
1932                 if (!(reg & BIT(cpu_port)))
1933                         reg |= BIT(cpu_port);
1934                 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1935         } else {
1936                 b53_get_vlan_entry(dev, pvid, vl);
1937                 vl->members |= BIT(port) | BIT(cpu_port);
1938                 vl->untag |= BIT(port) | BIT(cpu_port);
1939                 b53_set_vlan_entry(dev, pvid, vl);
1940         }
1941 }
1942 EXPORT_SYMBOL(b53_br_leave);
1943
1944 void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state)
1945 {
1946         struct b53_device *dev = ds->priv;
1947         u8 hw_state;
1948         u8 reg;
1949
1950         switch (state) {
1951         case BR_STATE_DISABLED:
1952                 hw_state = PORT_CTRL_DIS_STATE;
1953                 break;
1954         case BR_STATE_LISTENING:
1955                 hw_state = PORT_CTRL_LISTEN_STATE;
1956                 break;
1957         case BR_STATE_LEARNING:
1958                 hw_state = PORT_CTRL_LEARN_STATE;
1959                 break;
1960         case BR_STATE_FORWARDING:
1961                 hw_state = PORT_CTRL_FWD_STATE;
1962                 break;
1963         case BR_STATE_BLOCKING:
1964                 hw_state = PORT_CTRL_BLOCK_STATE;
1965                 break;
1966         default:
1967                 dev_err(ds->dev, "invalid STP state: %d\n", state);
1968                 return;
1969         }
1970
1971         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
1972         reg &= ~PORT_CTRL_STP_STATE_MASK;
1973         reg |= hw_state;
1974         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
1975 }
1976 EXPORT_SYMBOL(b53_br_set_stp_state);
1977
1978 void b53_br_fast_age(struct dsa_switch *ds, int port)
1979 {
1980         struct b53_device *dev = ds->priv;
1981
1982         if (b53_fast_age_port(dev, port))
1983                 dev_err(ds->dev, "fast ageing failed\n");
1984 }
1985 EXPORT_SYMBOL(b53_br_fast_age);
1986
1987 int b53_br_flags_pre(struct dsa_switch *ds, int port,
1988                      struct switchdev_brport_flags flags,
1989                      struct netlink_ext_ack *extack)
1990 {
1991         if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD | BR_LEARNING))
1992                 return -EINVAL;
1993
1994         return 0;
1995 }
1996 EXPORT_SYMBOL(b53_br_flags_pre);
1997
1998 int b53_br_flags(struct dsa_switch *ds, int port,
1999                  struct switchdev_brport_flags flags,
2000                  struct netlink_ext_ack *extack)
2001 {
2002         if (flags.mask & BR_FLOOD)
2003                 b53_port_set_ucast_flood(ds->priv, port,
2004                                          !!(flags.val & BR_FLOOD));
2005         if (flags.mask & BR_MCAST_FLOOD)
2006                 b53_port_set_mcast_flood(ds->priv, port,
2007                                          !!(flags.val & BR_MCAST_FLOOD));
2008         if (flags.mask & BR_LEARNING)
2009                 b53_port_set_learning(ds->priv, port,
2010                                       !!(flags.val & BR_LEARNING));
2011
2012         return 0;
2013 }
2014 EXPORT_SYMBOL(b53_br_flags);
2015
2016 static bool b53_possible_cpu_port(struct dsa_switch *ds, int port)
2017 {
2018         /* Broadcom switches will accept enabling Broadcom tags on the
2019          * following ports: 5, 7 and 8, any other port is not supported
2020          */
2021         switch (port) {
2022         case B53_CPU_PORT_25:
2023         case 7:
2024         case B53_CPU_PORT:
2025                 return true;
2026         }
2027
2028         return false;
2029 }
2030
2031 static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port,
2032                                      enum dsa_tag_protocol tag_protocol)
2033 {
2034         bool ret = b53_possible_cpu_port(ds, port);
2035
2036         if (!ret) {
2037                 dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n",
2038                          port);
2039                 return ret;
2040         }
2041
2042         switch (tag_protocol) {
2043         case DSA_TAG_PROTO_BRCM:
2044         case DSA_TAG_PROTO_BRCM_PREPEND:
2045                 dev_warn(ds->dev,
2046                          "Port %d is stacked to Broadcom tag switch\n", port);
2047                 ret = false;
2048                 break;
2049         default:
2050                 ret = true;
2051                 break;
2052         }
2053
2054         return ret;
2055 }
2056
2057 enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port,
2058                                            enum dsa_tag_protocol mprot)
2059 {
2060         struct b53_device *dev = ds->priv;
2061
2062         if (!b53_can_enable_brcm_tags(ds, port, mprot)) {
2063                 dev->tag_protocol = DSA_TAG_PROTO_NONE;
2064                 goto out;
2065         }
2066
2067         /* Older models require a different 6 byte tag */
2068         if (is5325(dev) || is5365(dev) || is63xx(dev)) {
2069                 dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY;
2070                 goto out;
2071         }
2072
2073         /* Broadcom BCM58xx chips have a flow accelerator on Port 8
2074          * which requires us to use the prepended Broadcom tag type
2075          */
2076         if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT) {
2077                 dev->tag_protocol = DSA_TAG_PROTO_BRCM_PREPEND;
2078                 goto out;
2079         }
2080
2081         dev->tag_protocol = DSA_TAG_PROTO_BRCM;
2082 out:
2083         return dev->tag_protocol;
2084 }
2085 EXPORT_SYMBOL(b53_get_tag_protocol);
2086
2087 int b53_mirror_add(struct dsa_switch *ds, int port,
2088                    struct dsa_mall_mirror_tc_entry *mirror, bool ingress,
2089                    struct netlink_ext_ack *extack)
2090 {
2091         struct b53_device *dev = ds->priv;
2092         u16 reg, loc;
2093
2094         if (ingress)
2095                 loc = B53_IG_MIR_CTL;
2096         else
2097                 loc = B53_EG_MIR_CTL;
2098
2099         b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
2100         reg |= BIT(port);
2101         b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2102
2103         b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
2104         reg &= ~CAP_PORT_MASK;
2105         reg |= mirror->to_local_port;
2106         reg |= MIRROR_EN;
2107         b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2108
2109         return 0;
2110 }
2111 EXPORT_SYMBOL(b53_mirror_add);
2112
2113 void b53_mirror_del(struct dsa_switch *ds, int port,
2114                     struct dsa_mall_mirror_tc_entry *mirror)
2115 {
2116         struct b53_device *dev = ds->priv;
2117         bool loc_disable = false, other_loc_disable = false;
2118         u16 reg, loc;
2119
2120         if (mirror->ingress)
2121                 loc = B53_IG_MIR_CTL;
2122         else
2123                 loc = B53_EG_MIR_CTL;
2124
2125         /* Update the desired ingress/egress register */
2126         b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
2127         reg &= ~BIT(port);
2128         if (!(reg & MIRROR_MASK))
2129                 loc_disable = true;
2130         b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2131
2132         /* Now look at the other one to know if we can disable mirroring
2133          * entirely
2134          */
2135         if (mirror->ingress)
2136                 b53_read16(dev, B53_MGMT_PAGE, B53_EG_MIR_CTL, &reg);
2137         else
2138                 b53_read16(dev, B53_MGMT_PAGE, B53_IG_MIR_CTL, &reg);
2139         if (!(reg & MIRROR_MASK))
2140                 other_loc_disable = true;
2141
2142         b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
2143         /* Both no longer have ports, let's disable mirroring */
2144         if (loc_disable && other_loc_disable) {
2145                 reg &= ~MIRROR_EN;
2146                 reg &= ~mirror->to_local_port;
2147         }
2148         b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2149 }
2150 EXPORT_SYMBOL(b53_mirror_del);
2151
2152 void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
2153 {
2154         struct b53_device *dev = ds->priv;
2155         u16 reg;
2156
2157         b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, &reg);
2158         if (enable)
2159                 reg |= BIT(port);
2160         else
2161                 reg &= ~BIT(port);
2162         b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
2163 }
2164 EXPORT_SYMBOL(b53_eee_enable_set);
2165
2166
2167 /* Returns 0 if EEE was not enabled, or 1 otherwise
2168  */
2169 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)
2170 {
2171         int ret;
2172
2173         ret = phy_init_eee(phy, false);
2174         if (ret)
2175                 return 0;
2176
2177         b53_eee_enable_set(ds, port, true);
2178
2179         return 1;
2180 }
2181 EXPORT_SYMBOL(b53_eee_init);
2182
2183 int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
2184 {
2185         struct b53_device *dev = ds->priv;
2186         struct ethtool_eee *p = &dev->ports[port].eee;
2187         u16 reg;
2188
2189         if (is5325(dev) || is5365(dev))
2190                 return -EOPNOTSUPP;
2191
2192         b53_read16(dev, B53_EEE_PAGE, B53_EEE_LPI_INDICATE, &reg);
2193         e->eee_enabled = p->eee_enabled;
2194         e->eee_active = !!(reg & BIT(port));
2195
2196         return 0;
2197 }
2198 EXPORT_SYMBOL(b53_get_mac_eee);
2199
2200 int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
2201 {
2202         struct b53_device *dev = ds->priv;
2203         struct ethtool_eee *p = &dev->ports[port].eee;
2204
2205         if (is5325(dev) || is5365(dev))
2206                 return -EOPNOTSUPP;
2207
2208         p->eee_enabled = e->eee_enabled;
2209         b53_eee_enable_set(ds, port, e->eee_enabled);
2210
2211         return 0;
2212 }
2213 EXPORT_SYMBOL(b53_set_mac_eee);
2214
2215 static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu)
2216 {
2217         struct b53_device *dev = ds->priv;
2218         bool enable_jumbo;
2219         bool allow_10_100;
2220
2221         if (is5325(dev) || is5365(dev))
2222                 return -EOPNOTSUPP;
2223
2224         enable_jumbo = (mtu >= JMS_MIN_SIZE);
2225         allow_10_100 = (dev->chip_id == BCM583XX_DEVICE_ID);
2226
2227         return b53_set_jumbo(dev, enable_jumbo, allow_10_100);
2228 }
2229
2230 static int b53_get_max_mtu(struct dsa_switch *ds, int port)
2231 {
2232         return JMS_MAX_SIZE;
2233 }
2234
2235 static const struct dsa_switch_ops b53_switch_ops = {
2236         .get_tag_protocol       = b53_get_tag_protocol,
2237         .setup                  = b53_setup,
2238         .teardown               = b53_teardown,
2239         .get_strings            = b53_get_strings,
2240         .get_ethtool_stats      = b53_get_ethtool_stats,
2241         .get_sset_count         = b53_get_sset_count,
2242         .get_ethtool_phy_stats  = b53_get_ethtool_phy_stats,
2243         .phy_read               = b53_phy_read16,
2244         .phy_write              = b53_phy_write16,
2245         .adjust_link            = b53_adjust_link,
2246         .phylink_get_caps       = b53_phylink_get_caps,
2247         .phylink_mac_select_pcs = b53_phylink_mac_select_pcs,
2248         .phylink_mac_config     = b53_phylink_mac_config,
2249         .phylink_mac_link_down  = b53_phylink_mac_link_down,
2250         .phylink_mac_link_up    = b53_phylink_mac_link_up,
2251         .port_enable            = b53_enable_port,
2252         .port_disable           = b53_disable_port,
2253         .get_mac_eee            = b53_get_mac_eee,
2254         .set_mac_eee            = b53_set_mac_eee,
2255         .port_bridge_join       = b53_br_join,
2256         .port_bridge_leave      = b53_br_leave,
2257         .port_pre_bridge_flags  = b53_br_flags_pre,
2258         .port_bridge_flags      = b53_br_flags,
2259         .port_stp_state_set     = b53_br_set_stp_state,
2260         .port_fast_age          = b53_br_fast_age,
2261         .port_vlan_filtering    = b53_vlan_filtering,
2262         .port_vlan_add          = b53_vlan_add,
2263         .port_vlan_del          = b53_vlan_del,
2264         .port_fdb_dump          = b53_fdb_dump,
2265         .port_fdb_add           = b53_fdb_add,
2266         .port_fdb_del           = b53_fdb_del,
2267         .port_mirror_add        = b53_mirror_add,
2268         .port_mirror_del        = b53_mirror_del,
2269         .port_mdb_add           = b53_mdb_add,
2270         .port_mdb_del           = b53_mdb_del,
2271         .port_max_mtu           = b53_get_max_mtu,
2272         .port_change_mtu        = b53_change_mtu,
2273 };
2274
2275 struct b53_chip_data {
2276         u32 chip_id;
2277         const char *dev_name;
2278         u16 vlans;
2279         u16 enabled_ports;
2280         u8 imp_port;
2281         u8 cpu_port;
2282         u8 vta_regs[3];
2283         u8 arl_bins;
2284         u16 arl_buckets;
2285         u8 duplex_reg;
2286         u8 jumbo_pm_reg;
2287         u8 jumbo_size_reg;
2288 };
2289
2290 #define B53_VTA_REGS    \
2291         { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
2292 #define B53_VTA_REGS_9798 \
2293         { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
2294 #define B53_VTA_REGS_63XX \
2295         { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
2296
2297 static const struct b53_chip_data b53_switch_chips[] = {
2298         {
2299                 .chip_id = BCM5325_DEVICE_ID,
2300                 .dev_name = "BCM5325",
2301                 .vlans = 16,
2302                 .enabled_ports = 0x3f,
2303                 .arl_bins = 2,
2304                 .arl_buckets = 1024,
2305                 .imp_port = 5,
2306                 .duplex_reg = B53_DUPLEX_STAT_FE,
2307         },
2308         {
2309                 .chip_id = BCM5365_DEVICE_ID,
2310                 .dev_name = "BCM5365",
2311                 .vlans = 256,
2312                 .enabled_ports = 0x3f,
2313                 .arl_bins = 2,
2314                 .arl_buckets = 1024,
2315                 .imp_port = 5,
2316                 .duplex_reg = B53_DUPLEX_STAT_FE,
2317         },
2318         {
2319                 .chip_id = BCM5389_DEVICE_ID,
2320                 .dev_name = "BCM5389",
2321                 .vlans = 4096,
2322                 .enabled_ports = 0x11f,
2323                 .arl_bins = 4,
2324                 .arl_buckets = 1024,
2325                 .imp_port = 8,
2326                 .vta_regs = B53_VTA_REGS,
2327                 .duplex_reg = B53_DUPLEX_STAT_GE,
2328                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2329                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2330         },
2331         {
2332                 .chip_id = BCM5395_DEVICE_ID,
2333                 .dev_name = "BCM5395",
2334                 .vlans = 4096,
2335                 .enabled_ports = 0x11f,
2336                 .arl_bins = 4,
2337                 .arl_buckets = 1024,
2338                 .imp_port = 8,
2339                 .vta_regs = B53_VTA_REGS,
2340                 .duplex_reg = B53_DUPLEX_STAT_GE,
2341                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2342                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2343         },
2344         {
2345                 .chip_id = BCM5397_DEVICE_ID,
2346                 .dev_name = "BCM5397",
2347                 .vlans = 4096,
2348                 .enabled_ports = 0x11f,
2349                 .arl_bins = 4,
2350                 .arl_buckets = 1024,
2351                 .imp_port = 8,
2352                 .vta_regs = B53_VTA_REGS_9798,
2353                 .duplex_reg = B53_DUPLEX_STAT_GE,
2354                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2355                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2356         },
2357         {
2358                 .chip_id = BCM5398_DEVICE_ID,
2359                 .dev_name = "BCM5398",
2360                 .vlans = 4096,
2361                 .enabled_ports = 0x17f,
2362                 .arl_bins = 4,
2363                 .arl_buckets = 1024,
2364                 .imp_port = 8,
2365                 .vta_regs = B53_VTA_REGS_9798,
2366                 .duplex_reg = B53_DUPLEX_STAT_GE,
2367                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2368                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2369         },
2370         {
2371                 .chip_id = BCM53115_DEVICE_ID,
2372                 .dev_name = "BCM53115",
2373                 .vlans = 4096,
2374                 .enabled_ports = 0x11f,
2375                 .arl_bins = 4,
2376                 .arl_buckets = 1024,
2377                 .vta_regs = B53_VTA_REGS,
2378                 .imp_port = 8,
2379                 .duplex_reg = B53_DUPLEX_STAT_GE,
2380                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2381                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2382         },
2383         {
2384                 .chip_id = BCM53125_DEVICE_ID,
2385                 .dev_name = "BCM53125",
2386                 .vlans = 4096,
2387                 .enabled_ports = 0x1ff,
2388                 .arl_bins = 4,
2389                 .arl_buckets = 1024,
2390                 .imp_port = 8,
2391                 .vta_regs = B53_VTA_REGS,
2392                 .duplex_reg = B53_DUPLEX_STAT_GE,
2393                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2394                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2395         },
2396         {
2397                 .chip_id = BCM53128_DEVICE_ID,
2398                 .dev_name = "BCM53128",
2399                 .vlans = 4096,
2400                 .enabled_ports = 0x1ff,
2401                 .arl_bins = 4,
2402                 .arl_buckets = 1024,
2403                 .imp_port = 8,
2404                 .vta_regs = B53_VTA_REGS,
2405                 .duplex_reg = B53_DUPLEX_STAT_GE,
2406                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2407                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2408         },
2409         {
2410                 .chip_id = BCM63XX_DEVICE_ID,
2411                 .dev_name = "BCM63xx",
2412                 .vlans = 4096,
2413                 .enabled_ports = 0, /* pdata must provide them */
2414                 .arl_bins = 4,
2415                 .arl_buckets = 1024,
2416                 .imp_port = 8,
2417                 .vta_regs = B53_VTA_REGS_63XX,
2418                 .duplex_reg = B53_DUPLEX_STAT_63XX,
2419                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
2420                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
2421         },
2422         {
2423                 .chip_id = BCM53010_DEVICE_ID,
2424                 .dev_name = "BCM53010",
2425                 .vlans = 4096,
2426                 .enabled_ports = 0x1bf,
2427                 .arl_bins = 4,
2428                 .arl_buckets = 1024,
2429                 .imp_port = 8,
2430                 .vta_regs = B53_VTA_REGS,
2431                 .duplex_reg = B53_DUPLEX_STAT_GE,
2432                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2433                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2434         },
2435         {
2436                 .chip_id = BCM53011_DEVICE_ID,
2437                 .dev_name = "BCM53011",
2438                 .vlans = 4096,
2439                 .enabled_ports = 0x1bf,
2440                 .arl_bins = 4,
2441                 .arl_buckets = 1024,
2442                 .imp_port = 8,
2443                 .vta_regs = B53_VTA_REGS,
2444                 .duplex_reg = B53_DUPLEX_STAT_GE,
2445                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2446                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2447         },
2448         {
2449                 .chip_id = BCM53012_DEVICE_ID,
2450                 .dev_name = "BCM53012",
2451                 .vlans = 4096,
2452                 .enabled_ports = 0x1bf,
2453                 .arl_bins = 4,
2454                 .arl_buckets = 1024,
2455                 .imp_port = 8,
2456                 .vta_regs = B53_VTA_REGS,
2457                 .duplex_reg = B53_DUPLEX_STAT_GE,
2458                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2459                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2460         },
2461         {
2462                 .chip_id = BCM53018_DEVICE_ID,
2463                 .dev_name = "BCM53018",
2464                 .vlans = 4096,
2465                 .enabled_ports = 0x1bf,
2466                 .arl_bins = 4,
2467                 .arl_buckets = 1024,
2468                 .imp_port = 8,
2469                 .vta_regs = B53_VTA_REGS,
2470                 .duplex_reg = B53_DUPLEX_STAT_GE,
2471                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2472                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2473         },
2474         {
2475                 .chip_id = BCM53019_DEVICE_ID,
2476                 .dev_name = "BCM53019",
2477                 .vlans = 4096,
2478                 .enabled_ports = 0x1bf,
2479                 .arl_bins = 4,
2480                 .arl_buckets = 1024,
2481                 .imp_port = 8,
2482                 .vta_regs = B53_VTA_REGS,
2483                 .duplex_reg = B53_DUPLEX_STAT_GE,
2484                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2485                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2486         },
2487         {
2488                 .chip_id = BCM58XX_DEVICE_ID,
2489                 .dev_name = "BCM585xx/586xx/88312",
2490                 .vlans  = 4096,
2491                 .enabled_ports = 0x1ff,
2492                 .arl_bins = 4,
2493                 .arl_buckets = 1024,
2494                 .imp_port = 8,
2495                 .vta_regs = B53_VTA_REGS,
2496                 .duplex_reg = B53_DUPLEX_STAT_GE,
2497                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2498                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2499         },
2500         {
2501                 .chip_id = BCM583XX_DEVICE_ID,
2502                 .dev_name = "BCM583xx/11360",
2503                 .vlans = 4096,
2504                 .enabled_ports = 0x103,
2505                 .arl_bins = 4,
2506                 .arl_buckets = 1024,
2507                 .imp_port = 8,
2508                 .vta_regs = B53_VTA_REGS,
2509                 .duplex_reg = B53_DUPLEX_STAT_GE,
2510                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2511                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2512         },
2513         /* Starfighter 2 */
2514         {
2515                 .chip_id = BCM4908_DEVICE_ID,
2516                 .dev_name = "BCM4908",
2517                 .vlans = 4096,
2518                 .enabled_ports = 0x1bf,
2519                 .arl_bins = 4,
2520                 .arl_buckets = 256,
2521                 .imp_port = 8,
2522                 .vta_regs = B53_VTA_REGS,
2523                 .duplex_reg = B53_DUPLEX_STAT_GE,
2524                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2525                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2526         },
2527         {
2528                 .chip_id = BCM7445_DEVICE_ID,
2529                 .dev_name = "BCM7445",
2530                 .vlans  = 4096,
2531                 .enabled_ports = 0x1ff,
2532                 .arl_bins = 4,
2533                 .arl_buckets = 1024,
2534                 .imp_port = 8,
2535                 .vta_regs = B53_VTA_REGS,
2536                 .duplex_reg = B53_DUPLEX_STAT_GE,
2537                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2538                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2539         },
2540         {
2541                 .chip_id = BCM7278_DEVICE_ID,
2542                 .dev_name = "BCM7278",
2543                 .vlans = 4096,
2544                 .enabled_ports = 0x1ff,
2545                 .arl_bins = 4,
2546                 .arl_buckets = 256,
2547                 .imp_port = 8,
2548                 .vta_regs = B53_VTA_REGS,
2549                 .duplex_reg = B53_DUPLEX_STAT_GE,
2550                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2551                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2552         },
2553 };
2554
2555 static int b53_switch_init(struct b53_device *dev)
2556 {
2557         unsigned int i;
2558         int ret;
2559
2560         for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
2561                 const struct b53_chip_data *chip = &b53_switch_chips[i];
2562
2563                 if (chip->chip_id == dev->chip_id) {
2564                         if (!dev->enabled_ports)
2565                                 dev->enabled_ports = chip->enabled_ports;
2566                         dev->name = chip->dev_name;
2567                         dev->duplex_reg = chip->duplex_reg;
2568                         dev->vta_regs[0] = chip->vta_regs[0];
2569                         dev->vta_regs[1] = chip->vta_regs[1];
2570                         dev->vta_regs[2] = chip->vta_regs[2];
2571                         dev->jumbo_pm_reg = chip->jumbo_pm_reg;
2572                         dev->imp_port = chip->imp_port;
2573                         dev->num_vlans = chip->vlans;
2574                         dev->num_arl_bins = chip->arl_bins;
2575                         dev->num_arl_buckets = chip->arl_buckets;
2576                         break;
2577                 }
2578         }
2579
2580         /* check which BCM5325x version we have */
2581         if (is5325(dev)) {
2582                 u8 vc4;
2583
2584                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
2585
2586                 /* check reserved bits */
2587                 switch (vc4 & 3) {
2588                 case 1:
2589                         /* BCM5325E */
2590                         break;
2591                 case 3:
2592                         /* BCM5325F - do not use port 4 */
2593                         dev->enabled_ports &= ~BIT(4);
2594                         break;
2595                 default:
2596 /* On the BCM47XX SoCs this is the supported internal switch.*/
2597 #ifndef CONFIG_BCM47XX
2598                         /* BCM5325M */
2599                         return -EINVAL;
2600 #else
2601                         break;
2602 #endif
2603                 }
2604         }
2605
2606         dev->num_ports = fls(dev->enabled_ports);
2607
2608         dev->ds->num_ports = min_t(unsigned int, dev->num_ports, DSA_MAX_PORTS);
2609
2610         /* Include non standard CPU port built-in PHYs to be probed */
2611         if (is539x(dev) || is531x5(dev)) {
2612                 for (i = 0; i < dev->num_ports; i++) {
2613                         if (!(dev->ds->phys_mii_mask & BIT(i)) &&
2614                             !b53_possible_cpu_port(dev->ds, i))
2615                                 dev->ds->phys_mii_mask |= BIT(i);
2616                 }
2617         }
2618
2619         dev->ports = devm_kcalloc(dev->dev,
2620                                   dev->num_ports, sizeof(struct b53_port),
2621                                   GFP_KERNEL);
2622         if (!dev->ports)
2623                 return -ENOMEM;
2624
2625         dev->vlans = devm_kcalloc(dev->dev,
2626                                   dev->num_vlans, sizeof(struct b53_vlan),
2627                                   GFP_KERNEL);
2628         if (!dev->vlans)
2629                 return -ENOMEM;
2630
2631         dev->reset_gpio = b53_switch_get_reset_gpio(dev);
2632         if (dev->reset_gpio >= 0) {
2633                 ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
2634                                             GPIOF_OUT_INIT_HIGH, "robo_reset");
2635                 if (ret)
2636                         return ret;
2637         }
2638
2639         return 0;
2640 }
2641
2642 struct b53_device *b53_switch_alloc(struct device *base,
2643                                     const struct b53_io_ops *ops,
2644                                     void *priv)
2645 {
2646         struct dsa_switch *ds;
2647         struct b53_device *dev;
2648
2649         ds = devm_kzalloc(base, sizeof(*ds), GFP_KERNEL);
2650         if (!ds)
2651                 return NULL;
2652
2653         ds->dev = base;
2654
2655         dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL);
2656         if (!dev)
2657                 return NULL;
2658
2659         ds->priv = dev;
2660         dev->dev = base;
2661
2662         dev->ds = ds;
2663         dev->priv = priv;
2664         dev->ops = ops;
2665         ds->ops = &b53_switch_ops;
2666         dev->vlan_enabled = true;
2667         /* Let DSA handle the case were multiple bridges span the same switch
2668          * device and different VLAN awareness settings are requested, which
2669          * would be breaking filtering semantics for any of the other bridge
2670          * devices. (not hardware supported)
2671          */
2672         ds->vlan_filtering_is_global = true;
2673
2674         mutex_init(&dev->reg_mutex);
2675         mutex_init(&dev->stats_mutex);
2676         mutex_init(&dev->arl_mutex);
2677
2678         return dev;
2679 }
2680 EXPORT_SYMBOL(b53_switch_alloc);
2681
2682 int b53_switch_detect(struct b53_device *dev)
2683 {
2684         u32 id32;
2685         u16 tmp;
2686         u8 id8;
2687         int ret;
2688
2689         ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
2690         if (ret)
2691                 return ret;
2692
2693         switch (id8) {
2694         case 0:
2695                 /* BCM5325 and BCM5365 do not have this register so reads
2696                  * return 0. But the read operation did succeed, so assume this
2697                  * is one of them.
2698                  *
2699                  * Next check if we can write to the 5325's VTA register; for
2700                  * 5365 it is read only.
2701                  */
2702                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
2703                 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
2704
2705                 if (tmp == 0xf)
2706                         dev->chip_id = BCM5325_DEVICE_ID;
2707                 else
2708                         dev->chip_id = BCM5365_DEVICE_ID;
2709                 break;
2710         case BCM5389_DEVICE_ID:
2711         case BCM5395_DEVICE_ID:
2712         case BCM5397_DEVICE_ID:
2713         case BCM5398_DEVICE_ID:
2714                 dev->chip_id = id8;
2715                 break;
2716         default:
2717                 ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
2718                 if (ret)
2719                         return ret;
2720
2721                 switch (id32) {
2722                 case BCM53115_DEVICE_ID:
2723                 case BCM53125_DEVICE_ID:
2724                 case BCM53128_DEVICE_ID:
2725                 case BCM53010_DEVICE_ID:
2726                 case BCM53011_DEVICE_ID:
2727                 case BCM53012_DEVICE_ID:
2728                 case BCM53018_DEVICE_ID:
2729                 case BCM53019_DEVICE_ID:
2730                         dev->chip_id = id32;
2731                         break;
2732                 default:
2733                         dev_err(dev->dev,
2734                                 "unsupported switch detected (BCM53%02x/BCM%x)\n",
2735                                 id8, id32);
2736                         return -ENODEV;
2737                 }
2738         }
2739
2740         if (dev->chip_id == BCM5325_DEVICE_ID)
2741                 return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
2742                                  &dev->core_rev);
2743         else
2744                 return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
2745                                  &dev->core_rev);
2746 }
2747 EXPORT_SYMBOL(b53_switch_detect);
2748
2749 int b53_switch_register(struct b53_device *dev)
2750 {
2751         int ret;
2752
2753         if (dev->pdata) {
2754                 dev->chip_id = dev->pdata->chip_id;
2755                 dev->enabled_ports = dev->pdata->enabled_ports;
2756         }
2757
2758         if (!dev->chip_id && b53_switch_detect(dev))
2759                 return -EINVAL;
2760
2761         ret = b53_switch_init(dev);
2762         if (ret)
2763                 return ret;
2764
2765         dev_info(dev->dev, "found switch: %s, rev %i\n",
2766                  dev->name, dev->core_rev);
2767
2768         return dsa_register_switch(dev->ds);
2769 }
2770 EXPORT_SYMBOL(b53_switch_register);
2771
2772 MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
2773 MODULE_DESCRIPTION("B53 switch library");
2774 MODULE_LICENSE("Dual BSD/GPL");