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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  21
  22 #include <linux/delay.h>
  23 #include <linux/export.h>
  24 #include <linux/gpio.h>
  25 #include <linux/kernel.h>
  26 #include <linux/module.h>
  27 #include <linux/platform_data/b53.h>
  28 #include <linux/phy.h>
  29 #include <linux/phylink.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/if_bridge.h>
  32 #include <net/dsa.h>
  33
  34 #include "b53_regs.h"
  35 #include "b53_priv.h"
  36
  37 struct b53_mib_desc {
  38         u8 size;
  39         u8 offset;
  40         const char *name;
  41 };
  42
  43 /* BCM5365 MIB counters */
  44 static const struct b53_mib_desc b53_mibs_65[] = {
  45         { 8, 0x00, "TxOctets" },
  46         { 4, 0x08, "TxDropPkts" },
  47         { 4, 0x10, "TxBroadcastPkts" },
  48         { 4, 0x14, "TxMulticastPkts" },
  49         { 4, 0x18, "TxUnicastPkts" },
  50         { 4, 0x1c, "TxCollisions" },
  51         { 4, 0x20, "TxSingleCollision" },
  52         { 4, 0x24, "TxMultipleCollision" },
  53         { 4, 0x28, "TxDeferredTransmit" },
  54         { 4, 0x2c, "TxLateCollision" },
  55         { 4, 0x30, "TxExcessiveCollision" },
  56         { 4, 0x38, "TxPausePkts" },
  57         { 8, 0x44, "RxOctets" },
  58         { 4, 0x4c, "RxUndersizePkts" },
  59         { 4, 0x50, "RxPausePkts" },
  60         { 4, 0x54, "Pkts64Octets" },
  61         { 4, 0x58, "Pkts65to127Octets" },
  62         { 4, 0x5c, "Pkts128to255Octets" },
  63         { 4, 0x60, "Pkts256to511Octets" },
  64         { 4, 0x64, "Pkts512to1023Octets" },
  65         { 4, 0x68, "Pkts1024to1522Octets" },
  66         { 4, 0x6c, "RxOversizePkts" },
  67         { 4, 0x70, "RxJabbers" },
  68         { 4, 0x74, "RxAlignmentErrors" },
  69         { 4, 0x78, "RxFCSErrors" },
  70         { 8, 0x7c, "RxGoodOctets" },
  71         { 4, 0x84, "RxDropPkts" },
  72         { 4, 0x88, "RxUnicastPkts" },
  73         { 4, 0x8c, "RxMulticastPkts" },
  74         { 4, 0x90, "RxBroadcastPkts" },
  75         { 4, 0x94, "RxSAChanges" },
  76         { 4, 0x98, "RxFragments" },
  77 };
  78
  79 #define B53_MIBS_65_SIZE        ARRAY_SIZE(b53_mibs_65)
  80
  81 /* BCM63xx MIB counters */
  82 static const struct b53_mib_desc b53_mibs_63xx[] = {
  83         { 8, 0x00, "TxOctets" },
  84         { 4, 0x08, "TxDropPkts" },
  85         { 4, 0x0c, "TxQoSPkts" },
  86         { 4, 0x10, "TxBroadcastPkts" },
  87         { 4, 0x14, "TxMulticastPkts" },
  88         { 4, 0x18, "TxUnicastPkts" },
  89         { 4, 0x1c, "TxCollisions" },
  90         { 4, 0x20, "TxSingleCollision" },
  91         { 4, 0x24, "TxMultipleCollision" },
  92         { 4, 0x28, "TxDeferredTransmit" },
  93         { 4, 0x2c, "TxLateCollision" },
  94         { 4, 0x30, "TxExcessiveCollision" },
  95         { 4, 0x38, "TxPausePkts" },
  96         { 8, 0x3c, "TxQoSOctets" },
  97         { 8, 0x44, "RxOctets" },
  98         { 4, 0x4c, "RxUndersizePkts" },
  99         { 4, 0x50, "RxPausePkts" },
 100         { 4, 0x54, "Pkts64Octets" },
 101         { 4, 0x58, "Pkts65to127Octets" },
 102         { 4, 0x5c, "Pkts128to255Octets" },
 103         { 4, 0x60, "Pkts256to511Octets" },
 104         { 4, 0x64, "Pkts512to1023Octets" },
 105         { 4, 0x68, "Pkts1024to1522Octets" },
 106         { 4, 0x6c, "RxOversizePkts" },
 107         { 4, 0x70, "RxJabbers" },
 108         { 4, 0x74, "RxAlignmentErrors" },
 109         { 4, 0x78, "RxFCSErrors" },
 110         { 8, 0x7c, "RxGoodOctets" },
 111         { 4, 0x84, "RxDropPkts" },
 112         { 4, 0x88, "RxUnicastPkts" },
 113         { 4, 0x8c, "RxMulticastPkts" },
 114         { 4, 0x90, "RxBroadcastPkts" },
 115         { 4, 0x94, "RxSAChanges" },
 116         { 4, 0x98, "RxFragments" },
 117         { 4, 0xa0, "RxSymbolErrors" },
 118         { 4, 0xa4, "RxQoSPkts" },
 119         { 8, 0xa8, "RxQoSOctets" },
 120         { 4, 0xb0, "Pkts1523to2047Octets" },
 121         { 4, 0xb4, "Pkts2048to4095Octets" },
 122         { 4, 0xb8, "Pkts4096to8191Octets" },
 123         { 4, 0xbc, "Pkts8192to9728Octets" },
 124         { 4, 0xc0, "RxDiscarded" },
 125 };
 126
 127 #define B53_MIBS_63XX_SIZE      ARRAY_SIZE(b53_mibs_63xx)
 128
 129 /* MIB counters */
 130 static const struct b53_mib_desc b53_mibs[] = {
 131         { 8, 0x00, "TxOctets" },
 132         { 4, 0x08, "TxDropPkts" },
 133         { 4, 0x10, "TxBroadcastPkts" },
 134         { 4, 0x14, "TxMulticastPkts" },
 135         { 4, 0x18, "TxUnicastPkts" },
 136         { 4, 0x1c, "TxCollisions" },
 137         { 4, 0x20, "TxSingleCollision" },
 138         { 4, 0x24, "TxMultipleCollision" },
 139         { 4, 0x28, "TxDeferredTransmit" },
 140         { 4, 0x2c, "TxLateCollision" },
 141         { 4, 0x30, "TxExcessiveCollision" },
 142         { 4, 0x38, "TxPausePkts" },
 143         { 8, 0x50, "RxOctets" },
 144         { 4, 0x58, "RxUndersizePkts" },
 145         { 4, 0x5c, "RxPausePkts" },
 146         { 4, 0x60, "Pkts64Octets" },
 147         { 4, 0x64, "Pkts65to127Octets" },
 148         { 4, 0x68, "Pkts128to255Octets" },
 149         { 4, 0x6c, "Pkts256to511Octets" },
 150         { 4, 0x70, "Pkts512to1023Octets" },
 151         { 4, 0x74, "Pkts1024to1522Octets" },
 152         { 4, 0x78, "RxOversizePkts" },
 153         { 4, 0x7c, "RxJabbers" },
 154         { 4, 0x80, "RxAlignmentErrors" },
 155         { 4, 0x84, "RxFCSErrors" },
 156         { 8, 0x88, "RxGoodOctets" },
 157         { 4, 0x90, "RxDropPkts" },
 158         { 4, 0x94, "RxUnicastPkts" },
 159         { 4, 0x98, "RxMulticastPkts" },
 160         { 4, 0x9c, "RxBroadcastPkts" },
 161         { 4, 0xa0, "RxSAChanges" },
 162         { 4, 0xa4, "RxFragments" },
 163         { 4, 0xa8, "RxJumboPkts" },
 164         { 4, 0xac, "RxSymbolErrors" },
 165         { 4, 0xc0, "RxDiscarded" },
 166 };
 167
 168 #define B53_MIBS_SIZE   ARRAY_SIZE(b53_mibs)
 169
 170 static const struct b53_mib_desc b53_mibs_58xx[] = {
 171         { 8, 0x00, "TxOctets" },
 172         { 4, 0x08, "TxDropPkts" },
 173         { 4, 0x0c, "TxQPKTQ0" },
 174         { 4, 0x10, "TxBroadcastPkts" },
 175         { 4, 0x14, "TxMulticastPkts" },
 176         { 4, 0x18, "TxUnicastPKts" },
 177         { 4, 0x1c, "TxCollisions" },
 178         { 4, 0x20, "TxSingleCollision" },
 179         { 4, 0x24, "TxMultipleCollision" },
 180         { 4, 0x28, "TxDeferredCollision" },
 181         { 4, 0x2c, "TxLateCollision" },
 182         { 4, 0x30, "TxExcessiveCollision" },
 183         { 4, 0x34, "TxFrameInDisc" },
 184         { 4, 0x38, "TxPausePkts" },
 185         { 4, 0x3c, "TxQPKTQ1" },
 186         { 4, 0x40, "TxQPKTQ2" },
 187         { 4, 0x44, "TxQPKTQ3" },
 188         { 4, 0x48, "TxQPKTQ4" },
 189         { 4, 0x4c, "TxQPKTQ5" },
 190         { 8, 0x50, "RxOctets" },
 191         { 4, 0x58, "RxUndersizePkts" },
 192         { 4, 0x5c, "RxPausePkts" },
 193         { 4, 0x60, "RxPkts64Octets" },
 194         { 4, 0x64, "RxPkts65to127Octets" },
 195         { 4, 0x68, "RxPkts128to255Octets" },
 196         { 4, 0x6c, "RxPkts256to511Octets" },
 197         { 4, 0x70, "RxPkts512to1023Octets" },
 198         { 4, 0x74, "RxPkts1024toMaxPktsOctets" },
 199         { 4, 0x78, "RxOversizePkts" },
 200         { 4, 0x7c, "RxJabbers" },
 201         { 4, 0x80, "RxAlignmentErrors" },
 202         { 4, 0x84, "RxFCSErrors" },
 203         { 8, 0x88, "RxGoodOctets" },
 204         { 4, 0x90, "RxDropPkts" },
 205         { 4, 0x94, "RxUnicastPkts" },
 206         { 4, 0x98, "RxMulticastPkts" },
 207         { 4, 0x9c, "RxBroadcastPkts" },
 208         { 4, 0xa0, "RxSAChanges" },
 209         { 4, 0xa4, "RxFragments" },
 210         { 4, 0xa8, "RxJumboPkt" },
 211         { 4, 0xac, "RxSymblErr" },
 212         { 4, 0xb0, "InRangeErrCount" },
 213         { 4, 0xb4, "OutRangeErrCount" },
 214         { 4, 0xb8, "EEELpiEvent" },
 215         { 4, 0xbc, "EEELpiDuration" },
 216         { 4, 0xc0, "RxDiscard" },
 217         { 4, 0xc8, "TxQPKTQ6" },
 218         { 4, 0xcc, "TxQPKTQ7" },
 219         { 4, 0xd0, "TxPkts64Octets" },
 220         { 4, 0xd4, "TxPkts65to127Octets" },
 221         { 4, 0xd8, "TxPkts128to255Octets" },
 222         { 4, 0xdc, "TxPkts256to511Ocets" },
 223         { 4, 0xe0, "TxPkts512to1023Ocets" },
 224         { 4, 0xe4, "TxPkts1024toMaxPktOcets" },
 225 };
 226
 227 #define B53_MIBS_58XX_SIZE      ARRAY_SIZE(b53_mibs_58xx)
 228
 229 static int b53_do_vlan_op(struct b53_device *dev, u8 op)
 230 {
 231         unsigned int i;
 232
 233         b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op);
 234
 235         for (i = 0; i < 10; i++) {
 236                 u8 vta;
 237
 238                 b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta);
 239                 if (!(vta & VTA_START_CMD))
 240                         return 0;
 241
 242                 usleep_range(100, 200);
 243         }
 244
 245         return -EIO;
 246 }
 247
 248 static void b53_set_vlan_entry(struct b53_device *dev, u16 vid,
 249                                struct b53_vlan *vlan)
 250 {
 251         if (is5325(dev)) {
 252                 u32 entry = 0;
 253
 254                 if (vlan->members) {
 255                         entry = ((vlan->untag & VA_UNTAG_MASK_25) <<
 256                                  VA_UNTAG_S_25) | vlan->members;
 257                         if (dev->core_rev >= 3)
 258                                 entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S;
 259                         else
 260                                 entry |= VA_VALID_25;
 261                 }
 262
 263                 b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry);
 264                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
 265                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 266         } else if (is5365(dev)) {
 267                 u16 entry = 0;
 268
 269                 if (vlan->members)
 270                         entry = ((vlan->untag & VA_UNTAG_MASK_65) <<
 271                                  VA_UNTAG_S_65) | vlan->members | VA_VALID_65;
 272
 273                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry);
 274                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
 275                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 276         } else {
 277                 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
 278                 b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2],
 279                             (vlan->untag << VTE_UNTAG_S) | vlan->members);
 280
 281                 b53_do_vlan_op(dev, VTA_CMD_WRITE);
 282         }
 283
 284         dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
 285                 vid, vlan->members, vlan->untag);
 286 }
 287
 288 static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
 289                                struct b53_vlan *vlan)
 290 {
 291         if (is5325(dev)) {
 292                 u32 entry = 0;
 293
 294                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
 295                             VTA_RW_STATE_RD | VTA_RW_OP_EN);
 296                 b53_read32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, &entry);
 297
 298                 if (dev->core_rev >= 3)
 299                         vlan->valid = !!(entry & VA_VALID_25_R4);
 300                 else
 301                         vlan->valid = !!(entry & VA_VALID_25);
 302                 vlan->members = entry & VA_MEMBER_MASK;
 303                 vlan->untag = (entry >> VA_UNTAG_S_25) & VA_UNTAG_MASK_25;
 304
 305         } else if (is5365(dev)) {
 306                 u16 entry = 0;
 307
 308                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
 309                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 310                 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, &entry);
 311
 312                 vlan->valid = !!(entry & VA_VALID_65);
 313                 vlan->members = entry & VA_MEMBER_MASK;
 314                 vlan->untag = (entry >> VA_UNTAG_S_65) & VA_UNTAG_MASK_65;
 315         } else {
 316                 u32 entry = 0;
 317
 318                 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
 319                 b53_do_vlan_op(dev, VTA_CMD_READ);
 320                 b53_read32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], &entry);
 321                 vlan->members = entry & VTE_MEMBERS;
 322                 vlan->untag = (entry >> VTE_UNTAG_S) & VTE_MEMBERS;
 323                 vlan->valid = true;
 324         }
 325 }
 326
 327 static void b53_set_forwarding(struct b53_device *dev, int enable)
 328 {
 329         u8 mgmt;
 330
 331         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 332
 333         if (enable)
 334                 mgmt |= SM_SW_FWD_EN;
 335         else
 336                 mgmt &= ~SM_SW_FWD_EN;
 337
 338         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 339
 340         /* Include IMP port in dumb forwarding mode
 341          */
 342         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
 343         mgmt |= B53_MII_DUMB_FWDG_EN;
 344         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
 345
 346         /* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
 347          * frames should be flooded or not.
 348          */
 349         b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
 350         mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN;
 351         b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
 352 }
 353
 354 static void b53_enable_vlan(struct b53_device *dev, bool enable,
 355                             bool enable_filtering)
 356 {
 357         u8 mgmt, vc0, vc1, vc4 = 0, vc5;
 358
 359         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 360         b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0);
 361         b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1);
 362
 363         if (is5325(dev) || is5365(dev)) {
 364                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
 365                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5);
 366         } else if (is63xx(dev)) {
 367                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4);
 368                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5);
 369         } else {
 370                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4);
 371                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
 372         }
 373
 374         if (enable) {
 375                 vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
 376                 vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
 377                 vc4 &= ~VC4_ING_VID_CHECK_MASK;
 378                 if (enable_filtering) {
 379                         vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
 380                         vc5 |= VC5_DROP_VTABLE_MISS;
 381                 } else {
 382                         vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
 383                         vc5 &= ~VC5_DROP_VTABLE_MISS;
 384                 }
 385
 386                 if (is5325(dev))
 387                         vc0 &= ~VC0_RESERVED_1;
 388
 389                 if (is5325(dev) || is5365(dev))
 390                         vc1 |= VC1_RX_MCST_TAG_EN;
 391
 392         } else {
 393                 vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
 394                 vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);
 395                 vc4 &= ~VC4_ING_VID_CHECK_MASK;
 396                 vc5 &= ~VC5_DROP_VTABLE_MISS;
 397
 398                 if (is5325(dev) || is5365(dev))
 399                         vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
 400                 else
 401                         vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S;
 402
 403                 if (is5325(dev) || is5365(dev))
 404                         vc1 &= ~VC1_RX_MCST_TAG_EN;
 405         }
 406
 407         if (!is5325(dev) && !is5365(dev))
 408                 vc5 &= ~VC5_VID_FFF_EN;
 409
 410         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0);
 411         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1);
 412
 413         if (is5325(dev) || is5365(dev)) {
 414                 /* enable the high 8 bit vid check on 5325 */
 415                 if (is5325(dev) && enable)
 416                         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3,
 417                                    VC3_HIGH_8BIT_EN);
 418                 else
 419                         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
 420
 421                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4);
 422                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5);
 423         } else if (is63xx(dev)) {
 424                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0);
 425                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4);
 426                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5);
 427         } else {
 428                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
 429                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4);
 430                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5);
 431         }
 432
 433         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 434
 435         dev->vlan_enabled = enable;
 436 }
 437
 438 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
 439 {
 440         u32 port_mask = 0;
 441         u16 max_size = JMS_MIN_SIZE;
 442
 443         if (is5325(dev) || is5365(dev))
 444                 return -EINVAL;
 445
 446         if (enable) {
 447                 port_mask = dev->enabled_ports;
 448                 max_size = JMS_MAX_SIZE;
 449                 if (allow_10_100)
 450                         port_mask |= JPM_10_100_JUMBO_EN;
 451         }
 452
 453         b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask);
 454         return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
 455 }
 456
 457 static int b53_flush_arl(struct b53_device *dev, u8 mask)
 458 {
 459         unsigned int i;
 460
 461         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
 462                    FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
 463
 464         for (i = 0; i < 10; i++) {
 465                 u8 fast_age_ctrl;
 466
 467                 b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
 468                           &fast_age_ctrl);
 469
 470                 if (!(fast_age_ctrl & FAST_AGE_DONE))
 471                         goto out;
 472
 473                 msleep(1);
 474         }
 475
 476         return -ETIMEDOUT;
 477 out:
 478         /* Only age dynamic entries (default behavior) */
 479         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, FAST_AGE_DYNAMIC);
 480         return 0;
 481 }
 482
 483 static int b53_fast_age_port(struct b53_device *dev, int port)
 484 {
 485         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
 486
 487         return b53_flush_arl(dev, FAST_AGE_PORT);
 488 }
 489
 490 static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
 491 {
 492         b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
 493
 494         return b53_flush_arl(dev, FAST_AGE_VLAN);
 495 }
 496
 497 void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
 498 {
 499         struct b53_device *dev = ds->priv;
 500         unsigned int i;
 501         u16 pvlan;
 502
 503         /* Enable the IMP port to be in the same VLAN as the other ports
 504          * on a per-port basis such that we only have Port i and IMP in
 505          * the same VLAN.
 506          */
 507         b53_for_each_port(dev, i) {
 508                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &pvlan);
 509                 pvlan |= BIT(cpu_port);
 510                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), pvlan);
 511         }
 512 }
 513 EXPORT_SYMBOL(b53_imp_vlan_setup);
 514
 515 int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
 516 {
 517         struct b53_device *dev = ds->priv;
 518         unsigned int cpu_port;
 519         int ret = 0;
 520         u16 pvlan;
 521
 522         if (!dsa_is_user_port(ds, port))
 523                 return 0;
 524
 525         cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
 526
 527         b53_br_egress_floods(ds, port, true, true);
 528
 529         if (dev->ops->irq_enable)
 530                 ret = dev->ops->irq_enable(dev, port);
 531         if (ret)
 532                 return ret;
 533
 534         /* Clear the Rx and Tx disable bits and set to no spanning tree */
 535         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
 536
 537         /* Set this port, and only this one to be in the default VLAN,
 538          * if member of a bridge, restore its membership prior to
 539          * bringing down this port.
 540          */
 541         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
 542         pvlan &= ~0x1ff;
 543         pvlan |= BIT(port);
 544         pvlan |= dev->ports[port].vlan_ctl_mask;
 545         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
 546
 547         b53_imp_vlan_setup(ds, cpu_port);
 548
 549         /* If EEE was enabled, restore it */
 550         if (dev->ports[port].eee.eee_enabled)
 551                 b53_eee_enable_set(ds, port, true);
 552
 553         return 0;
 554 }
 555 EXPORT_SYMBOL(b53_enable_port);
 556
 557 void b53_disable_port(struct dsa_switch *ds, int port)
 558 {
 559         struct b53_device *dev = ds->priv;
 560         u8 reg;
 561
 562         /* Disable Tx/Rx for the port */
 563         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
 564         reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
 565         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
 566
 567         if (dev->ops->irq_disable)
 568                 dev->ops->irq_disable(dev, port);
 569 }
 570 EXPORT_SYMBOL(b53_disable_port);
 571
 572 void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
 573 {
 574         struct b53_device *dev = ds->priv;
 575         bool tag_en = !(dev->tag_protocol == DSA_TAG_PROTO_NONE);
 576         u8 hdr_ctl, val;
 577         u16 reg;
 578
 579         /* Resolve which bit controls the Broadcom tag */
 580         switch (port) {
 581         case 8:
 582                 val = BRCM_HDR_P8_EN;
 583                 break;
 584         case 7:
 585                 val = BRCM_HDR_P7_EN;
 586                 break;
 587         case 5:
 588                 val = BRCM_HDR_P5_EN;
 589                 break;
 590         default:
 591                 val = 0;
 592                 break;
 593         }
 594
 595         /* Enable management mode if tagging is requested */
 596         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &hdr_ctl);
 597         if (tag_en)
 598                 hdr_ctl |= SM_SW_FWD_MODE;
 599         else
 600                 hdr_ctl &= ~SM_SW_FWD_MODE;
 601         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, hdr_ctl);
 602
 603         /* Configure the appropriate IMP port */
 604         b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &hdr_ctl);
 605         if (port == 8)
 606                 hdr_ctl |= GC_FRM_MGMT_PORT_MII;
 607         else if (port == 5)
 608                 hdr_ctl |= GC_FRM_MGMT_PORT_M;
 609         b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, hdr_ctl);
 610
 611         /* Enable Broadcom tags for IMP port */
 612         b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl);
 613         if (tag_en)
 614                 hdr_ctl |= val;
 615         else
 616                 hdr_ctl &= ~val;
 617         b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl);
 618
 619         /* Registers below are only accessible on newer devices */
 620         if (!is58xx(dev))
 621                 return;
 622
 623         /* Enable reception Broadcom tag for CPU TX (switch RX) to
 624          * allow us to tag outgoing frames
 625          */
 626         b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, &reg);
 627         if (tag_en)
 628                 reg &= ~BIT(port);
 629         else
 630                 reg |= BIT(port);
 631         b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, reg);
 632
 633         /* Enable transmission of Broadcom tags from the switch (CPU RX) to
 634          * allow delivering frames to the per-port net_devices
 635          */
 636         b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, &reg);
 637         if (tag_en)
 638                 reg &= ~BIT(port);
 639         else
 640                 reg |= BIT(port);
 641         b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg);
 642 }
 643 EXPORT_SYMBOL(b53_brcm_hdr_setup);
 644
 645 static void b53_enable_cpu_port(struct b53_device *dev, int port)
 646 {
 647         u8 port_ctrl;
 648
 649         /* BCM5325 CPU port is at 8 */
 650         if ((is5325(dev) || is5365(dev)) && port == B53_CPU_PORT_25)
 651                 port = B53_CPU_PORT;
 652
 653         port_ctrl = PORT_CTRL_RX_BCST_EN |
 654                     PORT_CTRL_RX_MCST_EN |
 655                     PORT_CTRL_RX_UCST_EN;
 656         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), port_ctrl);
 657
 658         b53_brcm_hdr_setup(dev->ds, port);
 659
 660         b53_br_egress_floods(dev->ds, port, true, true);
 661 }
 662
 663 static void b53_enable_mib(struct b53_device *dev)
 664 {
 665         u8 gc;
 666
 667         b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
 668         gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN);
 669         b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
 670 }
 671
 672 static u16 b53_default_pvid(struct b53_device *dev)
 673 {
 674         if (is5325(dev) || is5365(dev))
 675                 return 1;
 676         else
 677                 return 0;
 678 }
 679
 680 int b53_configure_vlan(struct dsa_switch *ds)
 681 {
 682         struct b53_device *dev = ds->priv;
 683         struct b53_vlan vl = { 0 };
 684         struct b53_vlan *v;
 685         int i, def_vid;
 686         u16 vid;
 687
 688         def_vid = b53_default_pvid(dev);
 689
 690         /* clear all vlan entries */
 691         if (is5325(dev) || is5365(dev)) {
 692                 for (i = def_vid; i < dev->num_vlans; i++)
 693                         b53_set_vlan_entry(dev, i, &vl);
 694         } else {
 695                 b53_do_vlan_op(dev, VTA_CMD_CLEAR);
 696         }
 697
 698         b53_enable_vlan(dev, dev->vlan_enabled, ds->vlan_filtering);
 699
 700         b53_for_each_port(dev, i)
 701                 b53_write16(dev, B53_VLAN_PAGE,
 702                             B53_VLAN_PORT_DEF_TAG(i), def_vid);
 703
 704         /* Upon initial call we have not set-up any VLANs, but upon
 705          * system resume, we need to restore all VLAN entries.
 706          */
 707         for (vid = def_vid; vid < dev->num_vlans; vid++) {
 708                 v = &dev->vlans[vid];
 709
 710                 if (!v->members)
 711                         continue;
 712
 713                 b53_set_vlan_entry(dev, vid, v);
 714                 b53_fast_age_vlan(dev, vid);
 715         }
 716
 717         return 0;
 718 }
 719 EXPORT_SYMBOL(b53_configure_vlan);
 720
 721 static void b53_switch_reset_gpio(struct b53_device *dev)
 722 {
 723         int gpio = dev->reset_gpio;
 724
 725         if (gpio < 0)
 726                 return;
 727
 728         /* Reset sequence: RESET low(50ms)->high(20ms)
 729          */
 730         gpio_set_value(gpio, 0);
 731         mdelay(50);
 732
 733         gpio_set_value(gpio, 1);
 734         mdelay(20);
 735
 736         dev->current_page = 0xff;
 737 }
 738
 739 static int b53_switch_reset(struct b53_device *dev)
 740 {
 741         unsigned int timeout = 1000;
 742         u8 mgmt, reg;
 743
 744         b53_switch_reset_gpio(dev);
 745
 746         if (is539x(dev)) {
 747                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83);
 748                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
 749         }
 750
 751         /* This is specific to 58xx devices here, do not use is58xx() which
 752          * covers the larger Starfigther 2 family, including 7445/7278 which
 753          * still use this driver as a library and need to perform the reset
 754          * earlier.
 755          */
 756         if (dev->chip_id == BCM58XX_DEVICE_ID ||
 757             dev->chip_id == BCM583XX_DEVICE_ID) {
 758                 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
 759                 reg |= SW_RST | EN_SW_RST | EN_CH_RST;
 760                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg);
 761
 762                 do {
 763                         b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
 764                         if (!(reg & SW_RST))
 765                                 break;
 766
 767                         usleep_range(1000, 2000);
 768                 } while (timeout-- > 0);
 769
 770                 if (timeout == 0)
 771                         return -ETIMEDOUT;
 772         }
 773
 774         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 775
 776         if (!(mgmt & SM_SW_FWD_EN)) {
 777                 mgmt &= ~SM_SW_FWD_MODE;
 778                 mgmt |= SM_SW_FWD_EN;
 779
 780                 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 781                 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 782
 783                 if (!(mgmt & SM_SW_FWD_EN)) {
 784                         dev_err(dev->dev, "Failed to enable switch!\n");
 785                         return -EINVAL;
 786                 }
 787         }
 788
 789         b53_enable_mib(dev);
 790
 791         return b53_flush_arl(dev, FAST_AGE_STATIC);
 792 }
 793
 794 static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg)
 795 {
 796         struct b53_device *priv = ds->priv;
 797         u16 value = 0;
 798         int ret;
 799
 800         if (priv->ops->phy_read16)
 801                 ret = priv->ops->phy_read16(priv, addr, reg, &value);
 802         else
 803                 ret = b53_read16(priv, B53_PORT_MII_PAGE(addr),
 804                                  reg * 2, &value);
 805
 806         return ret ? ret : value;
 807 }
 808
 809 static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
 810 {
 811         struct b53_device *priv = ds->priv;
 812
 813         if (priv->ops->phy_write16)
 814                 return priv->ops->phy_write16(priv, addr, reg, val);
 815
 816         return b53_write16(priv, B53_PORT_MII_PAGE(addr), reg * 2, val);
 817 }
 818
 819 static int b53_reset_switch(struct b53_device *priv)
 820 {
 821         /* reset vlans */
 822         memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans);
 823         memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports);
 824
 825         priv->serdes_lane = B53_INVALID_LANE;
 826
 827         return b53_switch_reset(priv);
 828 }
 829
 830 static int b53_apply_config(struct b53_device *priv)
 831 {
 832         /* disable switching */
 833         b53_set_forwarding(priv, 0);
 834
 835         b53_configure_vlan(priv->ds);
 836
 837         /* enable switching */
 838         b53_set_forwarding(priv, 1);
 839
 840         return 0;
 841 }
 842
 843 static void b53_reset_mib(struct b53_device *priv)
 844 {
 845         u8 gc;
 846
 847         b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
 848
 849         b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB);
 850         msleep(1);
 851         b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB);
 852         msleep(1);
 853 }
 854
 855 static const struct b53_mib_desc *b53_get_mib(struct b53_device *dev)
 856 {
 857         if (is5365(dev))
 858                 return b53_mibs_65;
 859         else if (is63xx(dev))
 860                 return b53_mibs_63xx;
 861         else if (is58xx(dev))
 862                 return b53_mibs_58xx;
 863         else
 864                 return b53_mibs;
 865 }
 866
 867 static unsigned int b53_get_mib_size(struct b53_device *dev)
 868 {
 869         if (is5365(dev))
 870                 return B53_MIBS_65_SIZE;
 871         else if (is63xx(dev))
 872                 return B53_MIBS_63XX_SIZE;
 873         else if (is58xx(dev))
 874                 return B53_MIBS_58XX_SIZE;
 875         else
 876                 return B53_MIBS_SIZE;
 877 }
 878
 879 static struct phy_device *b53_get_phy_device(struct dsa_switch *ds, int port)
 880 {
 881         /* These ports typically do not have built-in PHYs */
 882         switch (port) {
 883         case B53_CPU_PORT_25:
 884         case 7:
 885         case B53_CPU_PORT:
 886                 return NULL;
 887         }
 888
 889         return mdiobus_get_phy(ds->slave_mii_bus, port);
 890 }
 891
 892 void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
 893                      uint8_t *data)
 894 {
 895         struct b53_device *dev = ds->priv;
 896         const struct b53_mib_desc *mibs = b53_get_mib(dev);
 897         unsigned int mib_size = b53_get_mib_size(dev);
 898         struct phy_device *phydev;
 899         unsigned int i;
 900
 901         if (stringset == ETH_SS_STATS) {
 902                 for (i = 0; i < mib_size; i++)
 903                         strlcpy(data + i * ETH_GSTRING_LEN,
 904                                 mibs[i].name, ETH_GSTRING_LEN);
 905         } else if (stringset == ETH_SS_PHY_STATS) {
 906                 phydev = b53_get_phy_device(ds, port);
 907                 if (!phydev)
 908                         return;
 909
 910                 phy_ethtool_get_strings(phydev, data);
 911         }
 912 }
 913 EXPORT_SYMBOL(b53_get_strings);
 914
 915 void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
 916 {
 917         struct b53_device *dev = ds->priv;
 918         const struct b53_mib_desc *mibs = b53_get_mib(dev);
 919         unsigned int mib_size = b53_get_mib_size(dev);
 920         const struct b53_mib_desc *s;
 921         unsigned int i;
 922         u64 val = 0;
 923
 924         if (is5365(dev) && port == 5)
 925                 port = 8;
 926
 927         mutex_lock(&dev->stats_mutex);
 928
 929         for (i = 0; i < mib_size; i++) {
 930                 s = &mibs[i];
 931
 932                 if (s->size == 8) {
 933                         b53_read64(dev, B53_MIB_PAGE(port), s->offset, &val);
 934                 } else {
 935                         u32 val32;
 936
 937                         b53_read32(dev, B53_MIB_PAGE(port), s->offset,
 938                                    &val32);
 939                         val = val32;
 940                 }
 941                 data[i] = (u64)val;
 942         }
 943
 944         mutex_unlock(&dev->stats_mutex);
 945 }
 946 EXPORT_SYMBOL(b53_get_ethtool_stats);
 947
 948 void b53_get_ethtool_phy_stats(struct dsa_switch *ds, int port, uint64_t *data)
 949 {
 950         struct phy_device *phydev;
 951
 952         phydev = b53_get_phy_device(ds, port);
 953         if (!phydev)
 954                 return;
 955
 956         phy_ethtool_get_stats(phydev, NULL, data);
 957 }
 958 EXPORT_SYMBOL(b53_get_ethtool_phy_stats);
 959
 960 int b53_get_sset_count(struct dsa_switch *ds, int port, int sset)
 961 {
 962         struct b53_device *dev = ds->priv;
 963         struct phy_device *phydev;
 964
 965         if (sset == ETH_SS_STATS) {
 966                 return b53_get_mib_size(dev);
 967         } else if (sset == ETH_SS_PHY_STATS) {
 968                 phydev = b53_get_phy_device(ds, port);
 969                 if (!phydev)
 970                         return 0;
 971
 972                 return phy_ethtool_get_sset_count(phydev);
 973         }
 974
 975         return 0;
 976 }
 977 EXPORT_SYMBOL(b53_get_sset_count);
 978
 979 static int b53_setup(struct dsa_switch *ds)
 980 {
 981         struct b53_device *dev = ds->priv;
 982         unsigned int port;
 983         int ret;
 984
 985         ret = b53_reset_switch(dev);
 986         if (ret) {
 987                 dev_err(ds->dev, "failed to reset switch\n");
 988                 return ret;
 989         }
 990
 991         b53_reset_mib(dev);
 992
 993         ret = b53_apply_config(dev);
 994         if (ret)
 995                 dev_err(ds->dev, "failed to apply configuration\n");
 996
 997         /* Configure IMP/CPU port, disable all other ports. Enabled
 998          * ports will be configured with .port_enable
 999          */
1000         for (port = 0; port < dev->num_ports; port++) {
1001                 if (dsa_is_cpu_port(ds, port))
1002                         b53_enable_cpu_port(dev, port);
1003                 else
1004                         b53_disable_port(ds, port);
1005         }
1006
1007         /* Let DSA handle the case were multiple bridges span the same switch
1008          * device and different VLAN awareness settings are requested, which
1009          * would be breaking filtering semantics for any of the other bridge
1010          * devices. (not hardware supported)
1011          */
1012         ds->vlan_filtering_is_global = true;
1013
1014         return ret;
1015 }
1016
1017 static void b53_force_link(struct b53_device *dev, int port, int link)
1018 {
1019         u8 reg, val, off;
1020
1021         /* Override the port settings */
1022         if (port == dev->cpu_port) {
1023                 off = B53_PORT_OVERRIDE_CTRL;
1024                 val = PORT_OVERRIDE_EN;
1025         } else {
1026                 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1027                 val = GMII_PO_EN;
1028         }
1029
1030         b53_read8(dev, B53_CTRL_PAGE, off, &reg);
1031         reg |= val;
1032         if (link)
1033                 reg |= PORT_OVERRIDE_LINK;
1034         else
1035                 reg &= ~PORT_OVERRIDE_LINK;
1036         b53_write8(dev, B53_CTRL_PAGE, off, reg);
1037 }
1038
1039 static void b53_force_port_config(struct b53_device *dev, int port,
1040                                   int speed, int duplex,
1041                                   bool tx_pause, bool rx_pause)
1042 {
1043         u8 reg, val, off;
1044
1045         /* Override the port settings */
1046         if (port == dev->cpu_port) {
1047                 off = B53_PORT_OVERRIDE_CTRL;
1048                 val = PORT_OVERRIDE_EN;
1049         } else {
1050                 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1051                 val = GMII_PO_EN;
1052         }
1053
1054         b53_read8(dev, B53_CTRL_PAGE, off, &reg);
1055         reg |= val;
1056         if (duplex == DUPLEX_FULL)
1057                 reg |= PORT_OVERRIDE_FULL_DUPLEX;
1058         else
1059                 reg &= ~PORT_OVERRIDE_FULL_DUPLEX;
1060
1061         switch (speed) {
1062         case 2000:
1063                 reg |= PORT_OVERRIDE_SPEED_2000M;
1064                 /* fallthrough */
1065         case SPEED_1000:
1066                 reg |= PORT_OVERRIDE_SPEED_1000M;
1067                 break;
1068         case SPEED_100:
1069                 reg |= PORT_OVERRIDE_SPEED_100M;
1070                 break;
1071         case SPEED_10:
1072                 reg |= PORT_OVERRIDE_SPEED_10M;
1073                 break;
1074         default:
1075                 dev_err(dev->dev, "unknown speed: %d\n", speed);
1076                 return;
1077         }
1078
1079         if (rx_pause)
1080                 reg |= PORT_OVERRIDE_RX_FLOW;
1081         if (tx_pause)
1082                 reg |= PORT_OVERRIDE_TX_FLOW;
1083
1084         b53_write8(dev, B53_CTRL_PAGE, off, reg);
1085 }
1086
1087 static void b53_adjust_link(struct dsa_switch *ds, int port,
1088                             struct phy_device *phydev)
1089 {
1090         struct b53_device *dev = ds->priv;
1091         struct ethtool_eee *p = &dev->ports[port].eee;
1092         u8 rgmii_ctrl = 0, reg = 0, off;
1093         bool tx_pause = false;
1094         bool rx_pause = false;
1095
1096         if (!phy_is_pseudo_fixed_link(phydev))
1097                 return;
1098
1099         /* Enable flow control on BCM5301x's CPU port */
1100         if (is5301x(dev) && port == dev->cpu_port)
1101                 tx_pause = rx_pause = true;
1102
1103         if (phydev->pause) {
1104                 if (phydev->asym_pause)
1105                         tx_pause = true;
1106                 rx_pause = true;
1107         }
1108
1109         b53_force_port_config(dev, port, phydev->speed, phydev->duplex,
1110                               tx_pause, rx_pause);
1111         b53_force_link(dev, port, phydev->link);
1112
1113         if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
1114                 if (port == 8)
1115                         off = B53_RGMII_CTRL_IMP;
1116                 else
1117                         off = B53_RGMII_CTRL_P(port);
1118
1119                 /* Configure the port RGMII clock delay by DLL disabled and
1120                  * tx_clk aligned timing (restoring to reset defaults)
1121                  */
1122                 b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
1123                 rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC |
1124                                 RGMII_CTRL_TIMING_SEL);
1125
1126                 /* PHY_INTERFACE_MODE_RGMII_TXID means TX internal delay, make
1127                  * sure that we enable the port TX clock internal delay to
1128                  * account for this internal delay that is inserted, otherwise
1129                  * the switch won't be able to receive correctly.
1130                  *
1131                  * PHY_INTERFACE_MODE_RGMII means that we are not introducing
1132                  * any delay neither on transmission nor reception, so the
1133                  * BCM53125 must also be configured accordingly to account for
1134                  * the lack of delay and introduce
1135                  *
1136                  * The BCM53125 switch has its RX clock and TX clock control
1137                  * swapped, hence the reason why we modify the TX clock path in
1138                  * the "RGMII" case
1139                  */
1140                 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
1141                         rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
1142                 if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
1143                         rgmii_ctrl |= RGMII_CTRL_DLL_TXC | RGMII_CTRL_DLL_RXC;
1144                 rgmii_ctrl |= RGMII_CTRL_TIMING_SEL;
1145                 b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
1146
1147                 dev_info(ds->dev, "Configured port %d for %s\n", port,
1148                          phy_modes(phydev->interface));
1149         }
1150
1151         /* configure MII port if necessary */
1152         if (is5325(dev)) {
1153                 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1154                           &reg);
1155
1156                 /* reverse mii needs to be enabled */
1157                 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1158                         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1159                                    reg | PORT_OVERRIDE_RV_MII_25);
1160                         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1161                                   &reg);
1162
1163                         if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1164                                 dev_err(ds->dev,
1165                                         "Failed to enable reverse MII mode\n");
1166                                 return;
1167                         }
1168                 }
1169         } else if (is5301x(dev)) {
1170                 if (port != dev->cpu_port) {
1171                         b53_force_port_config(dev, dev->cpu_port, 2000,
1172                                               DUPLEX_FULL, true, true);
1173                         b53_force_link(dev, dev->cpu_port, 1);
1174                 }
1175         }
1176
1177         /* Re-negotiate EEE if it was enabled already */
1178         p->eee_enabled = b53_eee_init(ds, port, phydev);
1179 }
1180
1181 void b53_port_event(struct dsa_switch *ds, int port)
1182 {
1183         struct b53_device *dev = ds->priv;
1184         bool link;
1185         u16 sts;
1186
1187         b53_read16(dev, B53_STAT_PAGE, B53_LINK_STAT, &sts);
1188         link = !!(sts & BIT(port));
1189         dsa_port_phylink_mac_change(ds, port, link);
1190 }
1191 EXPORT_SYMBOL(b53_port_event);
1192
1193 void b53_phylink_validate(struct dsa_switch *ds, int port,
1194                           unsigned long *supported,
1195                           struct phylink_link_state *state)
1196 {
1197         struct b53_device *dev = ds->priv;
1198         __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
1199
1200         if (dev->ops->serdes_phylink_validate)
1201                 dev->ops->serdes_phylink_validate(dev, port, mask, state);
1202
1203         /* Allow all the expected bits */
1204         phylink_set(mask, Autoneg);
1205         phylink_set_port_modes(mask);
1206         phylink_set(mask, Pause);
1207         phylink_set(mask, Asym_Pause);
1208
1209         /* With the exclusion of 5325/5365, MII, Reverse MII and 802.3z, we
1210          * support Gigabit, including Half duplex.
1211          */
1212         if (state->interface != PHY_INTERFACE_MODE_MII &&
1213             state->interface != PHY_INTERFACE_MODE_REVMII &&
1214             !phy_interface_mode_is_8023z(state->interface) &&
1215             !(is5325(dev) || is5365(dev))) {
1216                 phylink_set(mask, 1000baseT_Full);
1217                 phylink_set(mask, 1000baseT_Half);
1218         }
1219
1220         if (!phy_interface_mode_is_8023z(state->interface)) {
1221                 phylink_set(mask, 10baseT_Half);
1222                 phylink_set(mask, 10baseT_Full);
1223                 phylink_set(mask, 100baseT_Half);
1224                 phylink_set(mask, 100baseT_Full);
1225         }
1226
1227         bitmap_and(supported, supported, mask,
1228                    __ETHTOOL_LINK_MODE_MASK_NBITS);
1229         bitmap_and(state->advertising, state->advertising, mask,
1230                    __ETHTOOL_LINK_MODE_MASK_NBITS);
1231
1232         phylink_helper_basex_speed(state);
1233 }
1234 EXPORT_SYMBOL(b53_phylink_validate);
1235
1236 int b53_phylink_mac_link_state(struct dsa_switch *ds, int port,
1237                                struct phylink_link_state *state)
1238 {
1239         struct b53_device *dev = ds->priv;
1240         int ret = -EOPNOTSUPP;
1241
1242         if ((phy_interface_mode_is_8023z(state->interface) ||
1243              state->interface == PHY_INTERFACE_MODE_SGMII) &&
1244              dev->ops->serdes_link_state)
1245                 ret = dev->ops->serdes_link_state(dev, port, state);
1246
1247         return ret;
1248 }
1249 EXPORT_SYMBOL(b53_phylink_mac_link_state);
1250
1251 void b53_phylink_mac_config(struct dsa_switch *ds, int port,
1252                             unsigned int mode,
1253                             const struct phylink_link_state *state)
1254 {
1255         struct b53_device *dev = ds->priv;
1256
1257         if (mode == MLO_AN_PHY || mode == MLO_AN_FIXED)
1258                 return;
1259
1260         if ((phy_interface_mode_is_8023z(state->interface) ||
1261              state->interface == PHY_INTERFACE_MODE_SGMII) &&
1262              dev->ops->serdes_config)
1263                 dev->ops->serdes_config(dev, port, mode, state);
1264 }
1265 EXPORT_SYMBOL(b53_phylink_mac_config);
1266
1267 void b53_phylink_mac_an_restart(struct dsa_switch *ds, int port)
1268 {
1269         struct b53_device *dev = ds->priv;
1270
1271         if (dev->ops->serdes_an_restart)
1272                 dev->ops->serdes_an_restart(dev, port);
1273 }
1274 EXPORT_SYMBOL(b53_phylink_mac_an_restart);
1275
1276 void b53_phylink_mac_link_down(struct dsa_switch *ds, int port,
1277                                unsigned int mode,
1278                                phy_interface_t interface)
1279 {
1280         struct b53_device *dev = ds->priv;
1281
1282         if (mode == MLO_AN_PHY)
1283                 return;
1284
1285         if (mode == MLO_AN_FIXED) {
1286                 b53_force_link(dev, port, false);
1287                 return;
1288         }
1289
1290         if (phy_interface_mode_is_8023z(interface) &&
1291             dev->ops->serdes_link_set)
1292                 dev->ops->serdes_link_set(dev, port, mode, interface, false);
1293 }
1294 EXPORT_SYMBOL(b53_phylink_mac_link_down);
1295
1296 void b53_phylink_mac_link_up(struct dsa_switch *ds, int port,
1297                              unsigned int mode,
1298                              phy_interface_t interface,
1299                              struct phy_device *phydev,
1300                              int speed, int duplex,
1301                              bool tx_pause, bool rx_pause)
1302 {
1303         struct b53_device *dev = ds->priv;
1304
1305         if (mode == MLO_AN_PHY)
1306                 return;
1307
1308         if (mode == MLO_AN_FIXED) {
1309                 b53_force_port_config(dev, port, speed, duplex,
1310                                       tx_pause, rx_pause);
1311                 b53_force_link(dev, port, true);
1312                 return;
1313         }
1314
1315         if (phy_interface_mode_is_8023z(interface) &&
1316             dev->ops->serdes_link_set)
1317                 dev->ops->serdes_link_set(dev, port, mode, interface, true);
1318 }
1319 EXPORT_SYMBOL(b53_phylink_mac_link_up);
1320
1321 int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)
1322 {
1323         struct b53_device *dev = ds->priv;
1324         u16 pvid, new_pvid;
1325
1326         b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
1327         if (!vlan_filtering) {
1328                 /* Filtering is currently enabled, use the default PVID since
1329                  * the bridge does not expect tagging anymore
1330                  */
1331                 dev->ports[port].pvid = pvid;
1332                 new_pvid = b53_default_pvid(dev);
1333         } else {
1334                 /* Filtering is currently disabled, restore the previous PVID */
1335                 new_pvid = dev->ports[port].pvid;
1336         }
1337
1338         if (pvid != new_pvid)
1339                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1340                             new_pvid);
1341
1342         b53_enable_vlan(dev, dev->vlan_enabled, vlan_filtering);
1343
1344         return 0;
1345 }
1346 EXPORT_SYMBOL(b53_vlan_filtering);
1347
1348 int b53_vlan_prepare(struct dsa_switch *ds, int port,
1349                      const struct switchdev_obj_port_vlan *vlan)
1350 {
1351         struct b53_device *dev = ds->priv;
1352
1353         if ((is5325(dev) || is5365(dev)) && vlan->vid_begin == 0)
1354                 return -EOPNOTSUPP;
1355
1356         /* Port 7 on 7278 connects to the ASP's UniMAC which is not capable of
1357          * receiving VLAN tagged frames at all, we can still allow the port to
1358          * be configured for egress untagged.
1359          */
1360         if (dev->chip_id == BCM7278_DEVICE_ID && port == 7 &&
1361             !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED))
1362                 return -EINVAL;
1363
1364         if (vlan->vid_end > dev->num_vlans)
1365                 return -ERANGE;
1366
1367         b53_enable_vlan(dev, true, ds->vlan_filtering);
1368
1369         return 0;
1370 }
1371 EXPORT_SYMBOL(b53_vlan_prepare);
1372
1373 void b53_vlan_add(struct dsa_switch *ds, int port,
1374                   const struct switchdev_obj_port_vlan *vlan)
1375 {
1376         struct b53_device *dev = ds->priv;
1377         bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1378         bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1379         struct b53_vlan *vl;
1380         u16 vid;
1381
1382         for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
1383                 vl = &dev->vlans[vid];
1384
1385                 b53_get_vlan_entry(dev, vid, vl);
1386
1387                 if (vid == 0 && vid == b53_default_pvid(dev))
1388                         untagged = true;
1389
1390                 vl->members |= BIT(port);
1391                 if (untagged && !dsa_is_cpu_port(ds, port))
1392                         vl->untag |= BIT(port);
1393                 else
1394                         vl->untag &= ~BIT(port);
1395
1396                 b53_set_vlan_entry(dev, vid, vl);
1397                 b53_fast_age_vlan(dev, vid);
1398         }
1399
1400         if (pvid && !dsa_is_cpu_port(ds, port)) {
1401                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1402                             vlan->vid_end);
1403                 b53_fast_age_vlan(dev, vid);
1404         }
1405 }
1406 EXPORT_SYMBOL(b53_vlan_add);
1407
1408 int b53_vlan_del(struct dsa_switch *ds, int port,
1409                  const struct switchdev_obj_port_vlan *vlan)
1410 {
1411         struct b53_device *dev = ds->priv;
1412         bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1413         struct b53_vlan *vl;
1414         u16 vid;
1415         u16 pvid;
1416
1417         b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
1418
1419         for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
1420                 vl = &dev->vlans[vid];
1421
1422                 b53_get_vlan_entry(dev, vid, vl);
1423
1424                 vl->members &= ~BIT(port);
1425
1426                 if (pvid == vid)
1427                         pvid = b53_default_pvid(dev);
1428
1429                 if (untagged && !dsa_is_cpu_port(ds, port))
1430                         vl->untag &= ~(BIT(port));
1431
1432                 b53_set_vlan_entry(dev, vid, vl);
1433                 b53_fast_age_vlan(dev, vid);
1434         }
1435
1436         b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid);
1437         b53_fast_age_vlan(dev, pvid);
1438
1439         return 0;
1440 }
1441 EXPORT_SYMBOL(b53_vlan_del);
1442
1443 /* Address Resolution Logic routines */
1444 static int b53_arl_op_wait(struct b53_device *dev)
1445 {
1446         unsigned int timeout = 10;
1447         u8 reg;
1448
1449         do {
1450                 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1451                 if (!(reg & ARLTBL_START_DONE))
1452                         return 0;
1453
1454                 usleep_range(1000, 2000);
1455         } while (timeout--);
1456
1457         dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg);
1458
1459         return -ETIMEDOUT;
1460 }
1461
1462 static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
1463 {
1464         u8 reg;
1465
1466         if (op > ARLTBL_RW)
1467                 return -EINVAL;
1468
1469         b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1470         reg |= ARLTBL_START_DONE;
1471         if (op)
1472                 reg |= ARLTBL_RW;
1473         else
1474                 reg &= ~ARLTBL_RW;
1475         if (dev->vlan_enabled)
1476                 reg &= ~ARLTBL_IVL_SVL_SELECT;
1477         else
1478                 reg |= ARLTBL_IVL_SVL_SELECT;
1479         b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg);
1480
1481         return b53_arl_op_wait(dev);
1482 }
1483
1484 static int b53_arl_read(struct b53_device *dev, u64 mac,
1485                         u16 vid, struct b53_arl_entry *ent, u8 *idx)
1486 {
1487         DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
1488         unsigned int i;
1489         int ret;
1490
1491         ret = b53_arl_op_wait(dev);
1492         if (ret)
1493                 return ret;
1494
1495         bitmap_zero(free_bins, dev->num_arl_bins);
1496
1497         /* Read the bins */
1498         for (i = 0; i < dev->num_arl_bins; i++) {
1499                 u64 mac_vid;
1500                 u32 fwd_entry;
1501
1502                 b53_read64(dev, B53_ARLIO_PAGE,
1503                            B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
1504                 b53_read32(dev, B53_ARLIO_PAGE,
1505                            B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
1506                 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1507
1508                 if (!(fwd_entry & ARLTBL_VALID)) {
1509                         set_bit(i, free_bins);
1510                         continue;
1511                 }
1512                 if ((mac_vid & ARLTBL_MAC_MASK) != mac)
1513                         continue;
1514                 if (dev->vlan_enabled &&
1515                     ((mac_vid >> ARLTBL_VID_S) & ARLTBL_VID_MASK) != vid)
1516                         continue;
1517                 *idx = i;
1518                 return 0;
1519         }
1520
1521         if (bitmap_weight(free_bins, dev->num_arl_bins) == 0)
1522                 return -ENOSPC;
1523
1524         *idx = find_first_bit(free_bins, dev->num_arl_bins);
1525
1526         return -ENOENT;
1527 }
1528
1529 static int b53_arl_op(struct b53_device *dev, int op, int port,
1530                       const unsigned char *addr, u16 vid, bool is_valid)
1531 {
1532         struct b53_arl_entry ent;
1533         u32 fwd_entry;
1534         u64 mac, mac_vid = 0;
1535         u8 idx = 0;
1536         int ret;
1537
1538         /* Convert the array into a 64-bit MAC */
1539         mac = ether_addr_to_u64(addr);
1540
1541         /* Perform a read for the given MAC and VID */
1542         b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
1543         b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
1544
1545         /* Issue a read operation for this MAC */
1546         ret = b53_arl_rw_op(dev, 1);
1547         if (ret)
1548                 return ret;
1549
1550         ret = b53_arl_read(dev, mac, vid, &ent, &idx);
1551
1552         /* If this is a read, just finish now */
1553         if (op)
1554                 return ret;
1555
1556         switch (ret) {
1557         case -ETIMEDOUT:
1558                 return ret;
1559         case -ENOSPC:
1560                 dev_dbg(dev->dev, "{%pM,%.4d} no space left in ARL\n",
1561                         addr, vid);
1562                 return is_valid ? ret : 0;
1563         case -ENOENT:
1564                 /* We could not find a matching MAC, so reset to a new entry */
1565                 dev_dbg(dev->dev, "{%pM,%.4d} not found, using idx: %d\n",
1566                         addr, vid, idx);
1567                 fwd_entry = 0;
1568                 break;
1569         default:
1570                 dev_dbg(dev->dev, "{%pM,%.4d} found, using idx: %d\n",
1571                         addr, vid, idx);
1572                 break;
1573         }
1574
1575         /* For multicast address, the port is a bitmask and the validity
1576          * is determined by having at least one port being still active
1577          */
1578         if (!is_multicast_ether_addr(addr)) {
1579                 ent.port = port;
1580                 ent.is_valid = is_valid;
1581         } else {
1582                 if (is_valid)
1583                         ent.port |= BIT(port);
1584                 else
1585                         ent.port &= ~BIT(port);
1586
1587                 ent.is_valid = !!(ent.port);
1588         }
1589
1590         ent.vid = vid;
1591         ent.is_static = true;
1592         ent.is_age = false;
1593         memcpy(ent.mac, addr, ETH_ALEN);
1594         b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
1595
1596         b53_write64(dev, B53_ARLIO_PAGE,
1597                     B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
1598         b53_write32(dev, B53_ARLIO_PAGE,
1599                     B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
1600
1601         return b53_arl_rw_op(dev, 0);
1602 }
1603
1604 int b53_fdb_add(struct dsa_switch *ds, int port,
1605                 const unsigned char *addr, u16 vid)
1606 {
1607         struct b53_device *priv = ds->priv;
1608
1609         /* 5325 and 5365 require some more massaging, but could
1610          * be supported eventually
1611          */
1612         if (is5325(priv) || is5365(priv))
1613                 return -EOPNOTSUPP;
1614
1615         return b53_arl_op(priv, 0, port, addr, vid, true);
1616 }
1617 EXPORT_SYMBOL(b53_fdb_add);
1618
1619 int b53_fdb_del(struct dsa_switch *ds, int port,
1620                 const unsigned char *addr, u16 vid)
1621 {
1622         struct b53_device *priv = ds->priv;
1623
1624         return b53_arl_op(priv, 0, port, addr, vid, false);
1625 }
1626 EXPORT_SYMBOL(b53_fdb_del);
1627
1628 static int b53_arl_search_wait(struct b53_device *dev)
1629 {
1630         unsigned int timeout = 1000;
1631         u8 reg;
1632
1633         do {
1634                 b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, &reg);
1635                 if (!(reg & ARL_SRCH_STDN))
1636                         return 0;
1637
1638                 if (reg & ARL_SRCH_VLID)
1639                         return 0;
1640
1641                 usleep_range(1000, 2000);
1642         } while (timeout--);
1643
1644         return -ETIMEDOUT;
1645 }
1646
1647 static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
1648                               struct b53_arl_entry *ent)
1649 {
1650         u64 mac_vid;
1651         u32 fwd_entry;
1652
1653         b53_read64(dev, B53_ARLIO_PAGE,
1654                    B53_ARL_SRCH_RSTL_MACVID(idx), &mac_vid);
1655         b53_read32(dev, B53_ARLIO_PAGE,
1656                    B53_ARL_SRCH_RSTL(idx), &fwd_entry);
1657         b53_arl_to_entry(ent, mac_vid, fwd_entry);
1658 }
1659
1660 static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
1661                         dsa_fdb_dump_cb_t *cb, void *data)
1662 {
1663         if (!ent->is_valid)
1664                 return 0;
1665
1666         if (port != ent->port)
1667                 return 0;
1668
1669         return cb(ent->mac, ent->vid, ent->is_static, data);
1670 }
1671
1672 int b53_fdb_dump(struct dsa_switch *ds, int port,
1673                  dsa_fdb_dump_cb_t *cb, void *data)
1674 {
1675         struct b53_device *priv = ds->priv;
1676         struct b53_arl_entry results[2];
1677         unsigned int count = 0;
1678         int ret;
1679         u8 reg;
1680
1681         /* Start search operation */
1682         reg = ARL_SRCH_STDN;
1683         b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
1684
1685         do {
1686                 ret = b53_arl_search_wait(priv);
1687                 if (ret)
1688                         return ret;
1689
1690                 b53_arl_search_rd(priv, 0, &results[0]);
1691                 ret = b53_fdb_copy(port, &results[0], cb, data);
1692                 if (ret)
1693                         return ret;
1694
1695                 if (priv->num_arl_bins > 2) {
1696                         b53_arl_search_rd(priv, 1, &results[1]);
1697                         ret = b53_fdb_copy(port, &results[1], cb, data);
1698                         if (ret)
1699                                 return ret;
1700
1701                         if (!results[0].is_valid && !results[1].is_valid)
1702                                 break;
1703                 }
1704
1705         } while (count++ < b53_max_arl_entries(priv) / 2);
1706
1707         return 0;
1708 }
1709 EXPORT_SYMBOL(b53_fdb_dump);
1710
1711 int b53_mdb_prepare(struct dsa_switch *ds, int port,
1712                     const struct switchdev_obj_port_mdb *mdb)
1713 {
1714         struct b53_device *priv = ds->priv;
1715
1716         /* 5325 and 5365 require some more massaging, but could
1717          * be supported eventually
1718          */
1719         if (is5325(priv) || is5365(priv))
1720                 return -EOPNOTSUPP;
1721
1722         return 0;
1723 }
1724 EXPORT_SYMBOL(b53_mdb_prepare);
1725
1726 void b53_mdb_add(struct dsa_switch *ds, int port,
1727                  const struct switchdev_obj_port_mdb *mdb)
1728 {
1729         struct b53_device *priv = ds->priv;
1730         int ret;
1731
1732         ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
1733         if (ret)
1734                 dev_err(ds->dev, "failed to add MDB entry\n");
1735 }
1736 EXPORT_SYMBOL(b53_mdb_add);
1737
1738 int b53_mdb_del(struct dsa_switch *ds, int port,
1739                 const struct switchdev_obj_port_mdb *mdb)
1740 {
1741         struct b53_device *priv = ds->priv;
1742         int ret;
1743
1744         ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
1745         if (ret)
1746                 dev_err(ds->dev, "failed to delete MDB entry\n");
1747
1748         return ret;
1749 }
1750 EXPORT_SYMBOL(b53_mdb_del);
1751
1752 int b53_br_join(struct dsa_switch *ds, int port, struct net_device *br)
1753 {
1754         struct b53_device *dev = ds->priv;
1755         s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
1756         u16 pvlan, reg;
1757         unsigned int i;
1758
1759         /* On 7278, port 7 which connects to the ASP should only receive
1760          * traffic from matching CFP rules.
1761          */
1762         if (dev->chip_id == BCM7278_DEVICE_ID && port == 7)
1763                 return -EINVAL;
1764
1765         /* Make this port leave the all VLANs join since we will have proper
1766          * VLAN entries from now on
1767          */
1768         if (is58xx(dev)) {
1769                 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1770                 reg &= ~BIT(port);
1771                 if ((reg & BIT(cpu_port)) == BIT(cpu_port))
1772                         reg &= ~BIT(cpu_port);
1773                 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1774         }
1775
1776         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1777
1778         b53_for_each_port(dev, i) {
1779                 if (dsa_to_port(ds, i)->bridge_dev != br)
1780                         continue;
1781
1782                 /* Add this local port to the remote port VLAN control
1783                  * membership and update the remote port bitmask
1784                  */
1785                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1786                 reg |= BIT(port);
1787                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1788                 dev->ports[i].vlan_ctl_mask = reg;
1789
1790                 pvlan |= BIT(i);
1791         }
1792
1793         /* Configure the local port VLAN control membership to include
1794          * remote ports and update the local port bitmask
1795          */
1796         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1797         dev->ports[port].vlan_ctl_mask = pvlan;
1798
1799         return 0;
1800 }
1801 EXPORT_SYMBOL(b53_br_join);
1802
1803 void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
1804 {
1805         struct b53_device *dev = ds->priv;
1806         struct b53_vlan *vl = &dev->vlans[0];
1807         s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
1808         unsigned int i;
1809         u16 pvlan, reg, pvid;
1810
1811         b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1812
1813         b53_for_each_port(dev, i) {
1814                 /* Don't touch the remaining ports */
1815                 if (dsa_to_port(ds, i)->bridge_dev != br)
1816                         continue;
1817
1818                 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1819                 reg &= ~BIT(port);
1820                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1821                 dev->ports[port].vlan_ctl_mask = reg;
1822
1823                 /* Prevent self removal to preserve isolation */
1824                 if (port != i)
1825                         pvlan &= ~BIT(i);
1826         }
1827
1828         b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1829         dev->ports[port].vlan_ctl_mask = pvlan;
1830
1831         pvid = b53_default_pvid(dev);
1832
1833         /* Make this port join all VLANs without VLAN entries */
1834         if (is58xx(dev)) {
1835                 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1836                 reg |= BIT(port);
1837                 if (!(reg & BIT(cpu_port)))
1838                         reg |= BIT(cpu_port);
1839                 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1840         } else {
1841                 b53_get_vlan_entry(dev, pvid, vl);
1842                 vl->members |= BIT(port) | BIT(cpu_port);
1843                 vl->untag |= BIT(port) | BIT(cpu_port);
1844                 b53_set_vlan_entry(dev, pvid, vl);
1845         }
1846 }
1847 EXPORT_SYMBOL(b53_br_leave);
1848
1849 void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state)
1850 {
1851         struct b53_device *dev = ds->priv;
1852         u8 hw_state;
1853         u8 reg;
1854
1855         switch (state) {
1856         case BR_STATE_DISABLED:
1857                 hw_state = PORT_CTRL_DIS_STATE;
1858                 break;
1859         case BR_STATE_LISTENING:
1860                 hw_state = PORT_CTRL_LISTEN_STATE;
1861                 break;
1862         case BR_STATE_LEARNING:
1863                 hw_state = PORT_CTRL_LEARN_STATE;
1864                 break;
1865         case BR_STATE_FORWARDING:
1866                 hw_state = PORT_CTRL_FWD_STATE;
1867                 break;
1868         case BR_STATE_BLOCKING:
1869                 hw_state = PORT_CTRL_BLOCK_STATE;
1870                 break;
1871         default:
1872                 dev_err(ds->dev, "invalid STP state: %d\n", state);
1873                 return;
1874         }
1875
1876         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
1877         reg &= ~PORT_CTRL_STP_STATE_MASK;
1878         reg |= hw_state;
1879         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
1880 }
1881 EXPORT_SYMBOL(b53_br_set_stp_state);
1882
1883 void b53_br_fast_age(struct dsa_switch *ds, int port)
1884 {
1885         struct b53_device *dev = ds->priv;
1886
1887         if (b53_fast_age_port(dev, port))
1888                 dev_err(ds->dev, "fast ageing failed\n");
1889 }
1890 EXPORT_SYMBOL(b53_br_fast_age);
1891
1892 int b53_br_egress_floods(struct dsa_switch *ds, int port,
1893                          bool unicast, bool multicast)
1894 {
1895         struct b53_device *dev = ds->priv;
1896         u16 uc, mc;
1897
1898         b53_read16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, &uc);
1899         if (unicast)
1900                 uc |= BIT(port);
1901         else
1902                 uc &= ~BIT(port);
1903         b53_write16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, uc);
1904
1905         b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &mc);
1906         if (multicast)
1907                 mc |= BIT(port);
1908         else
1909                 mc &= ~BIT(port);
1910         b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, mc);
1911
1912         b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &mc);
1913         if (multicast)
1914                 mc |= BIT(port);
1915         else
1916                 mc &= ~BIT(port);
1917         b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc);
1918
1919         return 0;
1920
1921 }
1922 EXPORT_SYMBOL(b53_br_egress_floods);
1923
1924 static bool b53_possible_cpu_port(struct dsa_switch *ds, int port)
1925 {
1926         /* Broadcom switches will accept enabling Broadcom tags on the
1927          * following ports: 5, 7 and 8, any other port is not supported
1928          */
1929         switch (port) {
1930         case B53_CPU_PORT_25:
1931         case 7:
1932         case B53_CPU_PORT:
1933                 return true;
1934         }
1935
1936         return false;
1937 }
1938
1939 static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port,
1940                                      enum dsa_tag_protocol tag_protocol)
1941 {
1942         bool ret = b53_possible_cpu_port(ds, port);
1943
1944         if (!ret) {
1945                 dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n",
1946                          port);
1947                 return ret;
1948         }
1949
1950         switch (tag_protocol) {
1951         case DSA_TAG_PROTO_BRCM:
1952         case DSA_TAG_PROTO_BRCM_PREPEND:
1953                 dev_warn(ds->dev,
1954                          "Port %d is stacked to Broadcom tag switch\n", port);
1955                 ret = false;
1956                 break;
1957         default:
1958                 ret = true;
1959                 break;
1960         }
1961
1962         return ret;
1963 }
1964
1965 enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port,
1966                                            enum dsa_tag_protocol mprot)
1967 {
1968         struct b53_device *dev = ds->priv;
1969
1970         /* Older models (5325, 5365) support a different tag format that we do
1971          * not support in net/dsa/tag_brcm.c yet.
1972          */
1973         if (is5325(dev) || is5365(dev) ||
1974             !b53_can_enable_brcm_tags(ds, port, mprot)) {
1975                 dev->tag_protocol = DSA_TAG_PROTO_NONE;
1976                 goto out;
1977         }
1978
1979         /* Broadcom BCM58xx chips have a flow accelerator on Port 8
1980          * which requires us to use the prepended Broadcom tag type
1981          */
1982         if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT) {
1983                 dev->tag_protocol = DSA_TAG_PROTO_BRCM_PREPEND;
1984                 goto out;
1985         }
1986
1987         dev->tag_protocol = DSA_TAG_PROTO_BRCM;
1988 out:
1989         return dev->tag_protocol;
1990 }
1991 EXPORT_SYMBOL(b53_get_tag_protocol);
1992
1993 int b53_mirror_add(struct dsa_switch *ds, int port,
1994                    struct dsa_mall_mirror_tc_entry *mirror, bool ingress)
1995 {
1996         struct b53_device *dev = ds->priv;
1997         u16 reg, loc;
1998
1999         if (ingress)
2000                 loc = B53_IG_MIR_CTL;
2001         else
2002                 loc = B53_EG_MIR_CTL;
2003
2004         b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
2005         reg |= BIT(port);
2006         b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2007
2008         b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
2009         reg &= ~CAP_PORT_MASK;
2010         reg |= mirror->to_local_port;
2011         reg |= MIRROR_EN;
2012         b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2013
2014         return 0;
2015 }
2016 EXPORT_SYMBOL(b53_mirror_add);
2017
2018 void b53_mirror_del(struct dsa_switch *ds, int port,
2019                     struct dsa_mall_mirror_tc_entry *mirror)
2020 {
2021         struct b53_device *dev = ds->priv;
2022         bool loc_disable = false, other_loc_disable = false;
2023         u16 reg, loc;
2024
2025         if (mirror->ingress)
2026                 loc = B53_IG_MIR_CTL;
2027         else
2028                 loc = B53_EG_MIR_CTL;
2029
2030         /* Update the desired ingress/egress register */
2031         b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
2032         reg &= ~BIT(port);
2033         if (!(reg & MIRROR_MASK))
2034                 loc_disable = true;
2035         b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2036
2037         /* Now look at the other one to know if we can disable mirroring
2038          * entirely
2039          */
2040         if (mirror->ingress)
2041                 b53_read16(dev, B53_MGMT_PAGE, B53_EG_MIR_CTL, &reg);
2042         else
2043                 b53_read16(dev, B53_MGMT_PAGE, B53_IG_MIR_CTL, &reg);
2044         if (!(reg & MIRROR_MASK))
2045                 other_loc_disable = true;
2046
2047         b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
2048         /* Both no longer have ports, let's disable mirroring */
2049         if (loc_disable && other_loc_disable) {
2050                 reg &= ~MIRROR_EN;
2051                 reg &= ~mirror->to_local_port;
2052         }
2053         b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2054 }
2055 EXPORT_SYMBOL(b53_mirror_del);
2056
2057 void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
2058 {
2059         struct b53_device *dev = ds->priv;
2060         u16 reg;
2061
2062         b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, &reg);
2063         if (enable)
2064                 reg |= BIT(port);
2065         else
2066                 reg &= ~BIT(port);
2067         b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
2068 }
2069 EXPORT_SYMBOL(b53_eee_enable_set);
2070
2071
2072 /* Returns 0 if EEE was not enabled, or 1 otherwise
2073  */
2074 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)
2075 {
2076         int ret;
2077
2078         ret = phy_init_eee(phy, 0);
2079         if (ret)
2080                 return 0;
2081
2082         b53_eee_enable_set(ds, port, true);
2083
2084         return 1;
2085 }
2086 EXPORT_SYMBOL(b53_eee_init);
2087
2088 int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
2089 {
2090         struct b53_device *dev = ds->priv;
2091         struct ethtool_eee *p = &dev->ports[port].eee;
2092         u16 reg;
2093
2094         if (is5325(dev) || is5365(dev))
2095                 return -EOPNOTSUPP;
2096
2097         b53_read16(dev, B53_EEE_PAGE, B53_EEE_LPI_INDICATE, &reg);
2098         e->eee_enabled = p->eee_enabled;
2099         e->eee_active = !!(reg & BIT(port));
2100
2101         return 0;
2102 }
2103 EXPORT_SYMBOL(b53_get_mac_eee);
2104
2105 int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
2106 {
2107         struct b53_device *dev = ds->priv;
2108         struct ethtool_eee *p = &dev->ports[port].eee;
2109
2110         if (is5325(dev) || is5365(dev))
2111                 return -EOPNOTSUPP;
2112
2113         p->eee_enabled = e->eee_enabled;
2114         b53_eee_enable_set(ds, port, e->eee_enabled);
2115
2116         return 0;
2117 }
2118 EXPORT_SYMBOL(b53_set_mac_eee);
2119
2120 static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu)
2121 {
2122         struct b53_device *dev = ds->priv;
2123         bool enable_jumbo;
2124         bool allow_10_100;
2125
2126         if (is5325(dev) || is5365(dev))
2127                 return -EOPNOTSUPP;
2128
2129         enable_jumbo = (mtu >= JMS_MIN_SIZE);
2130         allow_10_100 = (dev->chip_id == BCM583XX_DEVICE_ID);
2131
2132         return b53_set_jumbo(dev, enable_jumbo, allow_10_100);
2133 }
2134
2135 static int b53_get_max_mtu(struct dsa_switch *ds, int port)
2136 {
2137         return JMS_MAX_SIZE;
2138 }
2139
2140 static const struct dsa_switch_ops b53_switch_ops = {
2141         .get_tag_protocol       = b53_get_tag_protocol,
2142         .setup                  = b53_setup,
2143         .get_strings            = b53_get_strings,
2144         .get_ethtool_stats      = b53_get_ethtool_stats,
2145         .get_sset_count         = b53_get_sset_count,
2146         .get_ethtool_phy_stats  = b53_get_ethtool_phy_stats,
2147         .phy_read               = b53_phy_read16,
2148         .phy_write              = b53_phy_write16,
2149         .adjust_link            = b53_adjust_link,
2150         .phylink_validate       = b53_phylink_validate,
2151         .phylink_mac_link_state = b53_phylink_mac_link_state,
2152         .phylink_mac_config     = b53_phylink_mac_config,
2153         .phylink_mac_an_restart = b53_phylink_mac_an_restart,
2154         .phylink_mac_link_down  = b53_phylink_mac_link_down,
2155         .phylink_mac_link_up    = b53_phylink_mac_link_up,
2156         .port_enable            = b53_enable_port,
2157         .port_disable           = b53_disable_port,
2158         .get_mac_eee            = b53_get_mac_eee,
2159         .set_mac_eee            = b53_set_mac_eee,
2160         .port_bridge_join       = b53_br_join,
2161         .port_bridge_leave      = b53_br_leave,
2162         .port_stp_state_set     = b53_br_set_stp_state,
2163         .port_fast_age          = b53_br_fast_age,
2164         .port_egress_floods     = b53_br_egress_floods,
2165         .port_vlan_filtering    = b53_vlan_filtering,
2166         .port_vlan_prepare      = b53_vlan_prepare,
2167         .port_vlan_add          = b53_vlan_add,
2168         .port_vlan_del          = b53_vlan_del,
2169         .port_fdb_dump          = b53_fdb_dump,
2170         .port_fdb_add           = b53_fdb_add,
2171         .port_fdb_del           = b53_fdb_del,
2172         .port_mirror_add        = b53_mirror_add,
2173         .port_mirror_del        = b53_mirror_del,
2174         .port_mdb_prepare       = b53_mdb_prepare,
2175         .port_mdb_add           = b53_mdb_add,
2176         .port_mdb_del           = b53_mdb_del,
2177         .port_max_mtu           = b53_get_max_mtu,
2178         .port_change_mtu        = b53_change_mtu,
2179 };
2180
2181 struct b53_chip_data {
2182         u32 chip_id;
2183         const char *dev_name;
2184         u16 vlans;
2185         u16 enabled_ports;
2186         u8 cpu_port;
2187         u8 vta_regs[3];
2188         u8 arl_bins;
2189         u16 arl_buckets;
2190         u8 duplex_reg;
2191         u8 jumbo_pm_reg;
2192         u8 jumbo_size_reg;
2193 };
2194
2195 #define B53_VTA_REGS    \
2196         { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
2197 #define B53_VTA_REGS_9798 \
2198         { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
2199 #define B53_VTA_REGS_63XX \
2200         { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
2201
2202 static const struct b53_chip_data b53_switch_chips[] = {
2203         {
2204                 .chip_id = BCM5325_DEVICE_ID,
2205                 .dev_name = "BCM5325",
2206                 .vlans = 16,
2207                 .enabled_ports = 0x1f,
2208                 .arl_bins = 2,
2209                 .arl_buckets = 1024,
2210                 .cpu_port = B53_CPU_PORT_25,
2211                 .duplex_reg = B53_DUPLEX_STAT_FE,
2212         },
2213         {
2214                 .chip_id = BCM5365_DEVICE_ID,
2215                 .dev_name = "BCM5365",
2216                 .vlans = 256,
2217                 .enabled_ports = 0x1f,
2218                 .arl_bins = 2,
2219                 .arl_buckets = 1024,
2220                 .cpu_port = B53_CPU_PORT_25,
2221                 .duplex_reg = B53_DUPLEX_STAT_FE,
2222         },
2223         {
2224                 .chip_id = BCM5389_DEVICE_ID,
2225                 .dev_name = "BCM5389",
2226                 .vlans = 4096,
2227                 .enabled_ports = 0x1f,
2228                 .arl_bins = 4,
2229                 .arl_buckets = 1024,
2230                 .cpu_port = B53_CPU_PORT,
2231                 .vta_regs = B53_VTA_REGS,
2232                 .duplex_reg = B53_DUPLEX_STAT_GE,
2233                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2234                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2235         },
2236         {
2237                 .chip_id = BCM5395_DEVICE_ID,
2238                 .dev_name = "BCM5395",
2239                 .vlans = 4096,
2240                 .enabled_ports = 0x1f,
2241                 .arl_bins = 4,
2242                 .arl_buckets = 1024,
2243                 .cpu_port = B53_CPU_PORT,
2244                 .vta_regs = B53_VTA_REGS,
2245                 .duplex_reg = B53_DUPLEX_STAT_GE,
2246                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2247                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2248         },
2249         {
2250                 .chip_id = BCM5397_DEVICE_ID,
2251                 .dev_name = "BCM5397",
2252                 .vlans = 4096,
2253                 .enabled_ports = 0x1f,
2254                 .arl_bins = 4,
2255                 .arl_buckets = 1024,
2256                 .cpu_port = B53_CPU_PORT,
2257                 .vta_regs = B53_VTA_REGS_9798,
2258                 .duplex_reg = B53_DUPLEX_STAT_GE,
2259                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2260                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2261         },
2262         {
2263                 .chip_id = BCM5398_DEVICE_ID,
2264                 .dev_name = "BCM5398",
2265                 .vlans = 4096,
2266                 .enabled_ports = 0x7f,
2267                 .arl_bins = 4,
2268                 .arl_buckets = 1024,
2269                 .cpu_port = B53_CPU_PORT,
2270                 .vta_regs = B53_VTA_REGS_9798,
2271                 .duplex_reg = B53_DUPLEX_STAT_GE,
2272                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2273                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2274         },
2275         {
2276                 .chip_id = BCM53115_DEVICE_ID,
2277                 .dev_name = "BCM53115",
2278                 .vlans = 4096,
2279                 .enabled_ports = 0x1f,
2280                 .arl_bins = 4,
2281                 .arl_buckets = 1024,
2282                 .vta_regs = B53_VTA_REGS,
2283                 .cpu_port = B53_CPU_PORT,
2284                 .duplex_reg = B53_DUPLEX_STAT_GE,
2285                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2286                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2287         },
2288         {
2289                 .chip_id = BCM53125_DEVICE_ID,
2290                 .dev_name = "BCM53125",
2291                 .vlans = 4096,
2292                 .enabled_ports = 0xff,
2293                 .arl_bins = 4,
2294                 .arl_buckets = 1024,
2295                 .cpu_port = B53_CPU_PORT,
2296                 .vta_regs = B53_VTA_REGS,
2297                 .duplex_reg = B53_DUPLEX_STAT_GE,
2298                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2299                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2300         },
2301         {
2302                 .chip_id = BCM53128_DEVICE_ID,
2303                 .dev_name = "BCM53128",
2304                 .vlans = 4096,
2305                 .enabled_ports = 0x1ff,
2306                 .arl_bins = 4,
2307                 .arl_buckets = 1024,
2308                 .cpu_port = B53_CPU_PORT,
2309                 .vta_regs = B53_VTA_REGS,
2310                 .duplex_reg = B53_DUPLEX_STAT_GE,
2311                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2312                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2313         },
2314         {
2315                 .chip_id = BCM63XX_DEVICE_ID,
2316                 .dev_name = "BCM63xx",
2317                 .vlans = 4096,
2318                 .enabled_ports = 0, /* pdata must provide them */
2319                 .arl_bins = 4,
2320                 .arl_buckets = 1024,
2321                 .cpu_port = B53_CPU_PORT,
2322                 .vta_regs = B53_VTA_REGS_63XX,
2323                 .duplex_reg = B53_DUPLEX_STAT_63XX,
2324                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
2325                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
2326         },
2327         {
2328                 .chip_id = BCM53010_DEVICE_ID,
2329                 .dev_name = "BCM53010",
2330                 .vlans = 4096,
2331                 .enabled_ports = 0x1f,
2332                 .arl_bins = 4,
2333                 .arl_buckets = 1024,
2334                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2335                 .vta_regs = B53_VTA_REGS,
2336                 .duplex_reg = B53_DUPLEX_STAT_GE,
2337                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2338                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2339         },
2340         {
2341                 .chip_id = BCM53011_DEVICE_ID,
2342                 .dev_name = "BCM53011",
2343                 .vlans = 4096,
2344                 .enabled_ports = 0x1bf,
2345                 .arl_bins = 4,
2346                 .arl_buckets = 1024,
2347                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2348                 .vta_regs = B53_VTA_REGS,
2349                 .duplex_reg = B53_DUPLEX_STAT_GE,
2350                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2351                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2352         },
2353         {
2354                 .chip_id = BCM53012_DEVICE_ID,
2355                 .dev_name = "BCM53012",
2356                 .vlans = 4096,
2357                 .enabled_ports = 0x1bf,
2358                 .arl_bins = 4,
2359                 .arl_buckets = 1024,
2360                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2361                 .vta_regs = B53_VTA_REGS,
2362                 .duplex_reg = B53_DUPLEX_STAT_GE,
2363                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2364                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2365         },
2366         {
2367                 .chip_id = BCM53018_DEVICE_ID,
2368                 .dev_name = "BCM53018",
2369                 .vlans = 4096,
2370                 .enabled_ports = 0x1f,
2371                 .arl_bins = 4,
2372                 .arl_buckets = 1024,
2373                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2374                 .vta_regs = B53_VTA_REGS,
2375                 .duplex_reg = B53_DUPLEX_STAT_GE,
2376                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2377                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2378         },
2379         {
2380                 .chip_id = BCM53019_DEVICE_ID,
2381                 .dev_name = "BCM53019",
2382                 .vlans = 4096,
2383                 .enabled_ports = 0x1f,
2384                 .arl_bins = 4,
2385                 .arl_buckets = 1024,
2386                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2387                 .vta_regs = B53_VTA_REGS,
2388                 .duplex_reg = B53_DUPLEX_STAT_GE,
2389                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2390                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2391         },
2392         {
2393                 .chip_id = BCM58XX_DEVICE_ID,
2394                 .dev_name = "BCM585xx/586xx/88312",
2395                 .vlans  = 4096,
2396                 .enabled_ports = 0x1ff,
2397                 .arl_bins = 4,
2398                 .arl_buckets = 1024,
2399                 .cpu_port = B53_CPU_PORT,
2400                 .vta_regs = B53_VTA_REGS,
2401                 .duplex_reg = B53_DUPLEX_STAT_GE,
2402                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2403                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2404         },
2405         {
2406                 .chip_id = BCM583XX_DEVICE_ID,
2407                 .dev_name = "BCM583xx/11360",
2408                 .vlans = 4096,
2409                 .enabled_ports = 0x103,
2410                 .arl_bins = 4,
2411                 .arl_buckets = 1024,
2412                 .cpu_port = B53_CPU_PORT,
2413                 .vta_regs = B53_VTA_REGS,
2414                 .duplex_reg = B53_DUPLEX_STAT_GE,
2415                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2416                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2417         },
2418         {
2419                 .chip_id = BCM7445_DEVICE_ID,
2420                 .dev_name = "BCM7445",
2421                 .vlans  = 4096,
2422                 .enabled_ports = 0x1ff,
2423                 .arl_bins = 4,
2424                 .arl_buckets = 1024,
2425                 .cpu_port = B53_CPU_PORT,
2426                 .vta_regs = B53_VTA_REGS,
2427                 .duplex_reg = B53_DUPLEX_STAT_GE,
2428                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2429                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2430         },
2431         {
2432                 .chip_id = BCM7278_DEVICE_ID,
2433                 .dev_name = "BCM7278",
2434                 .vlans = 4096,
2435                 .enabled_ports = 0x1ff,
2436                 .arl_bins = 4,
2437                 .arl_buckets = 256,
2438                 .cpu_port = B53_CPU_PORT,
2439                 .vta_regs = B53_VTA_REGS,
2440                 .duplex_reg = B53_DUPLEX_STAT_GE,
2441                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2442                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2443         },
2444 };
2445
2446 static int b53_switch_init(struct b53_device *dev)
2447 {
2448         unsigned int i;
2449         int ret;
2450
2451         for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
2452                 const struct b53_chip_data *chip = &b53_switch_chips[i];
2453
2454                 if (chip->chip_id == dev->chip_id) {
2455                         if (!dev->enabled_ports)
2456                                 dev->enabled_ports = chip->enabled_ports;
2457                         dev->name = chip->dev_name;
2458                         dev->duplex_reg = chip->duplex_reg;
2459                         dev->vta_regs[0] = chip->vta_regs[0];
2460                         dev->vta_regs[1] = chip->vta_regs[1];
2461                         dev->vta_regs[2] = chip->vta_regs[2];
2462                         dev->jumbo_pm_reg = chip->jumbo_pm_reg;
2463                         dev->cpu_port = chip->cpu_port;
2464                         dev->num_vlans = chip->vlans;
2465                         dev->num_arl_bins = chip->arl_bins;
2466                         dev->num_arl_buckets = chip->arl_buckets;
2467                         break;
2468                 }
2469         }
2470
2471         /* check which BCM5325x version we have */
2472         if (is5325(dev)) {
2473                 u8 vc4;
2474
2475                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
2476
2477                 /* check reserved bits */
2478                 switch (vc4 & 3) {
2479                 case 1:
2480                         /* BCM5325E */
2481                         break;
2482                 case 3:
2483                         /* BCM5325F - do not use port 4 */
2484                         dev->enabled_ports &= ~BIT(4);
2485                         break;
2486                 default:
2487 /* On the BCM47XX SoCs this is the supported internal switch.*/
2488 #ifndef CONFIG_BCM47XX
2489                         /* BCM5325M */
2490                         return -EINVAL;
2491 #else
2492                         break;
2493 #endif
2494                 }
2495         } else if (dev->chip_id == BCM53115_DEVICE_ID) {
2496                 u64 strap_value;
2497
2498                 b53_read48(dev, B53_STAT_PAGE, B53_STRAP_VALUE, &strap_value);
2499                 /* use second IMP port if GMII is enabled */
2500                 if (strap_value & SV_GMII_CTRL_115)
2501                         dev->cpu_port = 5;
2502         }
2503
2504         /* cpu port is always last */
2505         dev->num_ports = dev->cpu_port + 1;
2506         dev->enabled_ports |= BIT(dev->cpu_port);
2507
2508         /* Include non standard CPU port built-in PHYs to be probed */
2509         if (is539x(dev) || is531x5(dev)) {
2510                 for (i = 0; i < dev->num_ports; i++) {
2511                         if (!(dev->ds->phys_mii_mask & BIT(i)) &&
2512                             !b53_possible_cpu_port(dev->ds, i))
2513                                 dev->ds->phys_mii_mask |= BIT(i);
2514                 }
2515         }
2516
2517         dev->ports = devm_kcalloc(dev->dev,
2518                                   dev->num_ports, sizeof(struct b53_port),
2519                                   GFP_KERNEL);
2520         if (!dev->ports)
2521                 return -ENOMEM;
2522
2523         dev->vlans = devm_kcalloc(dev->dev,
2524                                   dev->num_vlans, sizeof(struct b53_vlan),
2525                                   GFP_KERNEL);
2526         if (!dev->vlans)
2527                 return -ENOMEM;
2528
2529         dev->reset_gpio = b53_switch_get_reset_gpio(dev);
2530         if (dev->reset_gpio >= 0) {
2531                 ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
2532                                             GPIOF_OUT_INIT_HIGH, "robo_reset");
2533                 if (ret)
2534                         return ret;
2535         }
2536
2537         return 0;
2538 }
2539
2540 struct b53_device *b53_switch_alloc(struct device *base,
2541                                     const struct b53_io_ops *ops,
2542                                     void *priv)
2543 {
2544         struct dsa_switch *ds;
2545         struct b53_device *dev;
2546
2547         ds = devm_kzalloc(base, sizeof(*ds), GFP_KERNEL);
2548         if (!ds)
2549                 return NULL;
2550
2551         ds->dev = base;
2552         ds->num_ports = DSA_MAX_PORTS;
2553
2554         dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL);
2555         if (!dev)
2556                 return NULL;
2557
2558         ds->priv = dev;
2559         dev->dev = base;
2560
2561         dev->ds = ds;
2562         dev->priv = priv;
2563         dev->ops = ops;
2564         ds->ops = &b53_switch_ops;
2565         mutex_init(&dev->reg_mutex);
2566         mutex_init(&dev->stats_mutex);
2567
2568         return dev;
2569 }
2570 EXPORT_SYMBOL(b53_switch_alloc);
2571
2572 int b53_switch_detect(struct b53_device *dev)
2573 {
2574         u32 id32;
2575         u16 tmp;
2576         u8 id8;
2577         int ret;
2578
2579         ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
2580         if (ret)
2581                 return ret;
2582
2583         switch (id8) {
2584         case 0:
2585                 /* BCM5325 and BCM5365 do not have this register so reads
2586                  * return 0. But the read operation did succeed, so assume this
2587                  * is one of them.
2588                  *
2589                  * Next check if we can write to the 5325's VTA register; for
2590                  * 5365 it is read only.
2591                  */
2592                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
2593                 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
2594
2595                 if (tmp == 0xf)
2596                         dev->chip_id = BCM5325_DEVICE_ID;
2597                 else
2598                         dev->chip_id = BCM5365_DEVICE_ID;
2599                 break;
2600         case BCM5389_DEVICE_ID:
2601         case BCM5395_DEVICE_ID:
2602         case BCM5397_DEVICE_ID:
2603         case BCM5398_DEVICE_ID:
2604                 dev->chip_id = id8;
2605                 break;
2606         default:
2607                 ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
2608                 if (ret)
2609                         return ret;
2610
2611                 switch (id32) {
2612                 case BCM53115_DEVICE_ID:
2613                 case BCM53125_DEVICE_ID:
2614                 case BCM53128_DEVICE_ID:
2615                 case BCM53010_DEVICE_ID:
2616                 case BCM53011_DEVICE_ID:
2617                 case BCM53012_DEVICE_ID:
2618                 case BCM53018_DEVICE_ID:
2619                 case BCM53019_DEVICE_ID:
2620                         dev->chip_id = id32;
2621                         break;
2622                 default:
2623                         pr_err("unsupported switch detected (BCM53%02x/BCM%x)\n",
2624                                id8, id32);
2625                         return -ENODEV;
2626                 }
2627         }
2628
2629         if (dev->chip_id == BCM5325_DEVICE_ID)
2630                 return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
2631                                  &dev->core_rev);
2632         else
2633                 return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
2634                                  &dev->core_rev);
2635 }
2636 EXPORT_SYMBOL(b53_switch_detect);
2637
2638 int b53_switch_register(struct b53_device *dev)
2639 {
2640         int ret;
2641
2642         if (dev->pdata) {
2643                 dev->chip_id = dev->pdata->chip_id;
2644                 dev->enabled_ports = dev->pdata->enabled_ports;
2645         }
2646
2647         if (!dev->chip_id && b53_switch_detect(dev))
2648                 return -EINVAL;
2649
2650         ret = b53_switch_init(dev);
2651         if (ret)
2652                 return ret;
2653
2654         pr_info("found switch: %s, rev %i\n", dev->name, dev->core_rev);
2655
2656         return dsa_register_switch(dev->ds);
2657 }
2658 EXPORT_SYMBOL(b53_switch_register);
2659
2660 MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
2661 MODULE_DESCRIPTION("B53 switch library");
2662 MODULE_LICENSE("Dual BSD/GPL");