target/linux/generic/files/drivers/net/phy/b53/b53_common.c

   1 /*
   2  * B53 switch driver main logic
   3  *
   4  * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org>
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/delay.h>
  22 #include <linux/export.h>
  23 #include <linux/gpio.h>
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/switch.h>
  27 #include <linux/platform_data/b53.h>
  28
  29 #include "b53_regs.h"
  30 #include "b53_priv.h"
  31
  32 /* buffer size needed for displaying all MIBs with max'd values */
  33 #define B53_BUF_SIZE    1188
  34
  35 struct b53_mib_desc {
  36         u8 size;
  37         u8 offset;
  38         const char *name;
  39 };
  40
  41
  42 /* BCM5365 MIB counters */
  43 static const struct b53_mib_desc b53_mibs_65[] = {
  44         { 8, 0x00, "TxOctets" },
  45         { 4, 0x08, "TxDropPkts" },
  46         { 4, 0x10, "TxBroadcastPkts" },
  47         { 4, 0x14, "TxMulticastPkts" },
  48         { 4, 0x18, "TxUnicastPkts" },
  49         { 4, 0x1c, "TxCollisions" },
  50         { 4, 0x20, "TxSingleCollision" },
  51         { 4, 0x24, "TxMultipleCollision" },
  52         { 4, 0x28, "TxDeferredTransmit" },
  53         { 4, 0x2c, "TxLateCollision" },
  54         { 4, 0x30, "TxExcessiveCollision" },
  55         { 4, 0x38, "TxPausePkts" },
  56         { 8, 0x44, "RxOctets" },
  57         { 4, 0x4c, "RxUndersizePkts" },
  58         { 4, 0x50, "RxPausePkts" },
  59         { 4, 0x54, "Pkts64Octets" },
  60         { 4, 0x58, "Pkts65to127Octets" },
  61         { 4, 0x5c, "Pkts128to255Octets" },
  62         { 4, 0x60, "Pkts256to511Octets" },
  63         { 4, 0x64, "Pkts512to1023Octets" },
  64         { 4, 0x68, "Pkts1024to1522Octets" },
  65         { 4, 0x6c, "RxOversizePkts" },
  66         { 4, 0x70, "RxJabbers" },
  67         { 4, 0x74, "RxAlignmentErrors" },
  68         { 4, 0x78, "RxFCSErrors" },
  69         { 8, 0x7c, "RxGoodOctets" },
  70         { 4, 0x84, "RxDropPkts" },
  71         { 4, 0x88, "RxUnicastPkts" },
  72         { 4, 0x8c, "RxMulticastPkts" },
  73         { 4, 0x90, "RxBroadcastPkts" },
  74         { 4, 0x94, "RxSAChanges" },
  75         { 4, 0x98, "RxFragments" },
  76         { },
  77 };
  78
  79 /* BCM63xx MIB counters */
  80 static const struct b53_mib_desc b53_mibs_63xx[] = {
  81         { 8, 0x00, "TxOctets" },
  82         { 4, 0x08, "TxDropPkts" },
  83         { 4, 0x0c, "TxQoSPkts" },
  84         { 4, 0x10, "TxBroadcastPkts" },
  85         { 4, 0x14, "TxMulticastPkts" },
  86         { 4, 0x18, "TxUnicastPkts" },
  87         { 4, 0x1c, "TxCollisions" },
  88         { 4, 0x20, "TxSingleCollision" },
  89         { 4, 0x24, "TxMultipleCollision" },
  90         { 4, 0x28, "TxDeferredTransmit" },
  91         { 4, 0x2c, "TxLateCollision" },
  92         { 4, 0x30, "TxExcessiveCollision" },
  93         { 4, 0x38, "TxPausePkts" },
  94         { 8, 0x3c, "TxQoSOctets" },
  95         { 8, 0x44, "RxOctets" },
  96         { 4, 0x4c, "RxUndersizePkts" },
  97         { 4, 0x50, "RxPausePkts" },
  98         { 4, 0x54, "Pkts64Octets" },
  99         { 4, 0x58, "Pkts65to127Octets" },
 100         { 4, 0x5c, "Pkts128to255Octets" },
 101         { 4, 0x60, "Pkts256to511Octets" },
 102         { 4, 0x64, "Pkts512to1023Octets" },
 103         { 4, 0x68, "Pkts1024to1522Octets" },
 104         { 4, 0x6c, "RxOversizePkts" },
 105         { 4, 0x70, "RxJabbers" },
 106         { 4, 0x74, "RxAlignmentErrors" },
 107         { 4, 0x78, "RxFCSErrors" },
 108         { 8, 0x7c, "RxGoodOctets" },
 109         { 4, 0x84, "RxDropPkts" },
 110         { 4, 0x88, "RxUnicastPkts" },
 111         { 4, 0x8c, "RxMulticastPkts" },
 112         { 4, 0x90, "RxBroadcastPkts" },
 113         { 4, 0x94, "RxSAChanges" },
 114         { 4, 0x98, "RxFragments" },
 115         { 4, 0xa0, "RxSymbolErrors" },
 116         { 4, 0xa4, "RxQoSPkts" },
 117         { 8, 0xa8, "RxQoSOctets" },
 118         { 4, 0xb0, "Pkts1523to2047Octets" },
 119         { 4, 0xb4, "Pkts2048to4095Octets" },
 120         { 4, 0xb8, "Pkts4096to8191Octets" },
 121         { 4, 0xbc, "Pkts8192to9728Octets" },
 122         { 4, 0xc0, "RxDiscarded" },
 123         { }
 124 };
 125
 126 /* MIB counters */
 127 static const struct b53_mib_desc b53_mibs[] = {
 128         { 8, 0x00, "TxOctets" },
 129         { 4, 0x08, "TxDropPkts" },
 130         { 4, 0x10, "TxBroadcastPkts" },
 131         { 4, 0x14, "TxMulticastPkts" },
 132         { 4, 0x18, "TxUnicastPkts" },
 133         { 4, 0x1c, "TxCollisions" },
 134         { 4, 0x20, "TxSingleCollision" },
 135         { 4, 0x24, "TxMultipleCollision" },
 136         { 4, 0x28, "TxDeferredTransmit" },
 137         { 4, 0x2c, "TxLateCollision" },
 138         { 4, 0x30, "TxExcessiveCollision" },
 139         { 4, 0x38, "TxPausePkts" },
 140         { 8, 0x50, "RxOctets" },
 141         { 4, 0x58, "RxUndersizePkts" },
 142         { 4, 0x5c, "RxPausePkts" },
 143         { 4, 0x60, "Pkts64Octets" },
 144         { 4, 0x64, "Pkts65to127Octets" },
 145         { 4, 0x68, "Pkts128to255Octets" },
 146         { 4, 0x6c, "Pkts256to511Octets" },
 147         { 4, 0x70, "Pkts512to1023Octets" },
 148         { 4, 0x74, "Pkts1024to1522Octets" },
 149         { 4, 0x78, "RxOversizePkts" },
 150         { 4, 0x7c, "RxJabbers" },
 151         { 4, 0x80, "RxAlignmentErrors" },
 152         { 4, 0x84, "RxFCSErrors" },
 153         { 8, 0x88, "RxGoodOctets" },
 154         { 4, 0x90, "RxDropPkts" },
 155         { 4, 0x94, "RxUnicastPkts" },
 156         { 4, 0x98, "RxMulticastPkts" },
 157         { 4, 0x9c, "RxBroadcastPkts" },
 158         { 4, 0xa0, "RxSAChanges" },
 159         { 4, 0xa4, "RxFragments" },
 160         { 4, 0xa8, "RxJumboPkts" },
 161         { 4, 0xac, "RxSymbolErrors" },
 162         { 4, 0xc0, "RxDiscarded" },
 163         { }
 164 };
 165
 166 static int b53_do_vlan_op(struct b53_device *dev, u8 op)
 167 {
 168         unsigned int i;
 169
 170         b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op);
 171
 172         for (i = 0; i < 10; i++) {
 173                 u8 vta;
 174
 175                 b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta);
 176                 if (!(vta & VTA_START_CMD))
 177                         return 0;
 178
 179                 usleep_range(100, 200);
 180         }
 181
 182         return -EIO;
 183 }
 184
 185 static void b53_set_vlan_entry(struct b53_device *dev, u16 vid, u16 members,
 186                                u16 untag)
 187 {
 188         if (is5325(dev)) {
 189                 u32 entry = 0;
 190
 191                 if (members) {
 192                         entry = ((untag & VA_UNTAG_MASK_25) << VA_UNTAG_S_25) |
 193                                 members;
 194                         if (dev->core_rev >= 3)
 195                                 entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S;
 196                         else
 197                                 entry |= VA_VALID_25;
 198                 }
 199
 200                 b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry);
 201                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
 202                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 203         } else if (is5365(dev)) {
 204                 u16 entry = 0;
 205
 206                 if (members)
 207                         entry = ((untag & VA_UNTAG_MASK_65) << VA_UNTAG_S_65) |
 208                                 members | VA_VALID_65;
 209
 210                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry);
 211                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
 212                             VTA_RW_STATE_WR | VTA_RW_OP_EN);
 213         } else {
 214                 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
 215                 b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2],
 216                             (untag << VTE_UNTAG_S) | members);
 217
 218                 b53_do_vlan_op(dev, VTA_CMD_WRITE);
 219         }
 220 }
 221
 222 void b53_set_forwarding(struct b53_device *dev, int enable)
 223 {
 224         u8 mgmt;
 225
 226         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 227
 228         if (enable)
 229                 mgmt |= SM_SW_FWD_EN;
 230         else
 231                 mgmt &= ~SM_SW_FWD_EN;
 232
 233         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 234 }
 235
 236 static void b53_enable_vlan(struct b53_device *dev, int enable)
 237 {
 238         u8 mgmt, vc0, vc1, vc4 = 0, vc5;
 239
 240         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 241         b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0);
 242         b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1);
 243
 244         if (is5325(dev) || is5365(dev)) {
 245                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
 246                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5);
 247         } else if (is63xx(dev)) {
 248                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4);
 249                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5);
 250         } else {
 251                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4);
 252                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
 253         }
 254
 255         mgmt &= ~SM_SW_FWD_MODE;
 256
 257         if (enable) {
 258                 vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
 259                 vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
 260                 vc4 &= ~VC4_ING_VID_CHECK_MASK;
 261                 vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
 262                 vc5 |= VC5_DROP_VTABLE_MISS;
 263
 264                 if (is5325(dev))
 265                         vc0 &= ~VC0_RESERVED_1;
 266
 267                 if (is5325(dev) || is5365(dev))
 268                         vc1 |= VC1_RX_MCST_TAG_EN;
 269
 270                 if (!is5325(dev) && !is5365(dev)) {
 271                         if (dev->allow_vid_4095)
 272                                 vc5 |= VC5_VID_FFF_EN;
 273                         else
 274                                 vc5 &= ~VC5_VID_FFF_EN;
 275                 }
 276         } else {
 277                 vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
 278                 vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);
 279                 vc4 &= ~VC4_ING_VID_CHECK_MASK;
 280                 vc5 &= ~VC5_DROP_VTABLE_MISS;
 281
 282                 if (is5325(dev) || is5365(dev))
 283                         vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
 284                 else
 285                         vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S;
 286
 287                 if (is5325(dev) || is5365(dev))
 288                         vc1 &= ~VC1_RX_MCST_TAG_EN;
 289
 290                 if (!is5325(dev) && !is5365(dev))
 291                         vc5 &= ~VC5_VID_FFF_EN;
 292         }
 293
 294         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0);
 295         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1);
 296
 297         if (is5325(dev) || is5365(dev)) {
 298                 /* enable the high 8 bit vid check on 5325 */
 299                 if (is5325(dev) && enable)
 300                         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3,
 301                                    VC3_HIGH_8BIT_EN);
 302                 else
 303                         b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
 304
 305                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4);
 306                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5);
 307         } else if (is63xx(dev)) {
 308                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0);
 309                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4);
 310                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5);
 311         } else {
 312                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
 313                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4);
 314                 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5);
 315         }
 316
 317         b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 318 }
 319
 320 static int b53_set_jumbo(struct b53_device *dev, int enable, int allow_10_100)
 321 {
 322         u32 port_mask = 0;
 323         u16 max_size = JMS_MIN_SIZE;
 324
 325         if (is5325(dev) || is5365(dev))
 326                 return -EINVAL;
 327
 328         if (enable) {
 329                 port_mask = dev->enabled_ports;
 330                 max_size = JMS_MAX_SIZE;
 331                 if (allow_10_100)
 332                         port_mask |= JPM_10_100_JUMBO_EN;
 333         }
 334
 335         b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask);
 336         return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
 337 }
 338
 339 static int b53_flush_arl(struct b53_device *dev)
 340 {
 341         unsigned int i;
 342
 343         b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
 344                    FAST_AGE_DONE | FAST_AGE_DYNAMIC | FAST_AGE_STATIC);
 345
 346         for (i = 0; i < 10; i++) {
 347                 u8 fast_age_ctrl;
 348
 349                 b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
 350                           &fast_age_ctrl);
 351
 352                 if (!(fast_age_ctrl & FAST_AGE_DONE))
 353                         return 0;
 354
 355                 mdelay(1);
 356         }
 357
 358         pr_warn("time out while flushing ARL\n");
 359
 360         return -EINVAL;
 361 }
 362
 363 static void b53_enable_ports(struct b53_device *dev)
 364 {
 365         unsigned i;
 366
 367         b53_for_each_port(dev, i) {
 368                 u8 port_ctrl;
 369                 u16 pvlan_mask;
 370
 371                 /*
 372                  * prevent leaking packets between wan and lan in unmanaged
 373                  * mode through port vlans.
 374                  */
 375                 if (dev->enable_vlan || is_cpu_port(dev, i))
 376                         pvlan_mask = 0x1ff;
 377                 else if (is531x5(dev) || is5301x(dev))
 378                         /* BCM53115 may use a different port as cpu port */
 379                         pvlan_mask = BIT(dev->sw_dev.cpu_port);
 380                 else
 381                         pvlan_mask = BIT(B53_CPU_PORT);
 382
 383                 /* BCM5325 CPU port is at 8 */
 384                 if ((is5325(dev) || is5365(dev)) && i == B53_CPU_PORT_25)
 385                         i = B53_CPU_PORT;
 386
 387                 if (dev->chip_id == BCM5398_DEVICE_ID && (i == 6 || i == 7))
 388                         /* disable unused ports 6 & 7 */
 389                         port_ctrl = PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
 390                 else if (i == B53_CPU_PORT)
 391                         port_ctrl = PORT_CTRL_RX_BCST_EN |
 392                                     PORT_CTRL_RX_MCST_EN |
 393                                     PORT_CTRL_RX_UCST_EN;
 394                 else
 395                         port_ctrl = 0;
 396
 397                 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i),
 398                             pvlan_mask);
 399
 400                 /* port state is handled by bcm63xx_enet driver */
 401                 if (!is63xx(dev) && !(is5301x(dev) && i == 6))
 402                         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(i),
 403                                    port_ctrl);
 404         }
 405 }
 406
 407 static void b53_enable_mib(struct b53_device *dev)
 408 {
 409         u8 gc;
 410
 411         b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
 412
 413         gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN);
 414
 415         b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
 416 }
 417
 418 static int b53_apply(struct b53_device *dev)
 419 {
 420         int i;
 421
 422         /* clear all vlan entries */
 423         if (is5325(dev) || is5365(dev)) {
 424                 for (i = 1; i < dev->sw_dev.vlans; i++)
 425                         b53_set_vlan_entry(dev, i, 0, 0);
 426         } else {
 427                 b53_do_vlan_op(dev, VTA_CMD_CLEAR);
 428         }
 429
 430         b53_enable_vlan(dev, dev->enable_vlan);
 431
 432         /* fill VLAN table */
 433         if (dev->enable_vlan) {
 434                 for (i = 0; i < dev->sw_dev.vlans; i++) {
 435                         struct b53_vlan *vlan = &dev->vlans[i];
 436
 437                         if (!vlan->members)
 438                                 continue;
 439
 440                         b53_set_vlan_entry(dev, i, vlan->members, vlan->untag);
 441                 }
 442
 443                 b53_for_each_port(dev, i)
 444                         b53_write16(dev, B53_VLAN_PAGE,
 445                                     B53_VLAN_PORT_DEF_TAG(i),
 446                                     dev->ports[i].pvid);
 447         } else {
 448                 b53_for_each_port(dev, i)
 449                         b53_write16(dev, B53_VLAN_PAGE,
 450                                     B53_VLAN_PORT_DEF_TAG(i), 1);
 451
 452         }
 453
 454         b53_enable_ports(dev);
 455
 456         if (!is5325(dev) && !is5365(dev))
 457                 b53_set_jumbo(dev, dev->enable_jumbo, 1);
 458
 459         return 0;
 460 }
 461
 462 static void b53_switch_reset_gpio(struct b53_device *dev)
 463 {
 464         int gpio = dev->reset_gpio;
 465
 466         if (gpio < 0)
 467                 return;
 468
 469         /*
 470          * Reset sequence: RESET low(50ms)->high(20ms)
 471          */
 472         gpio_set_value(gpio, 0);
 473         mdelay(50);
 474
 475         gpio_set_value(gpio, 1);
 476         mdelay(20);
 477
 478         dev->current_page = 0xff;
 479 }
 480
 481 static int b53_switch_reset(struct b53_device *dev)
 482 {
 483         u8 mgmt;
 484
 485         b53_switch_reset_gpio(dev);
 486
 487         if (is539x(dev)) {
 488                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83);
 489                 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
 490         }
 491
 492         b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 493
 494         if (!(mgmt & SM_SW_FWD_EN)) {
 495                 mgmt &= ~SM_SW_FWD_MODE;
 496                 mgmt |= SM_SW_FWD_EN;
 497
 498                 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
 499                 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
 500
 501                 if (!(mgmt & SM_SW_FWD_EN)) {
 502                         pr_err("Failed to enable switch!\n");
 503                         return -EINVAL;
 504                 }
 505         }
 506
 507         /* enable all ports */
 508         b53_enable_ports(dev);
 509
 510         /* configure MII port if necessary */
 511         if (is5325(dev)) {
 512                 u8 mii_port_override;
 513
 514                 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
 515                           &mii_port_override);
 516                 /* reverse mii needs to be enabled */
 517                 if (!(mii_port_override & PORT_OVERRIDE_RV_MII_25)) {
 518                         b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
 519                                    mii_port_override | PORT_OVERRIDE_RV_MII_25);
 520                         b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
 521                                   &mii_port_override);
 522
 523                         if (!(mii_port_override & PORT_OVERRIDE_RV_MII_25)) {
 524                                 pr_err("Failed to enable reverse MII mode\n");
 525                                 return -EINVAL;
 526                         }
 527                 }
 528         } else if ((is531x5(dev) || is5301x(dev)) &&
 529                    dev->sw_dev.cpu_port == B53_CPU_PORT) {
 530                 u8 mii_port_override;
 531
 532                 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
 533                           &mii_port_override);
 534                 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
 535                            mii_port_override | PORT_OVERRIDE_EN |
 536                            PORT_OVERRIDE_LINK);
 537         }
 538
 539         b53_enable_mib(dev);
 540
 541         return b53_flush_arl(dev);
 542 }
 543
 544 /*
 545  * Swconfig glue functions
 546  */
 547
 548 static int b53_global_get_vlan_enable(struct switch_dev *dev,
 549                                       const struct switch_attr *attr,
 550                                       struct switch_val *val)
 551 {
 552         struct b53_device *priv = sw_to_b53(dev);
 553
 554         val->value.i = priv->enable_vlan;
 555
 556         return 0;
 557 }
 558
 559 static int b53_global_set_vlan_enable(struct switch_dev *dev,
 560                                       const struct switch_attr *attr,
 561                                       struct switch_val *val)
 562 {
 563         struct b53_device *priv = sw_to_b53(dev);
 564
 565         priv->enable_vlan = val->value.i;
 566
 567         return 0;
 568 }
 569
 570 static int b53_global_get_jumbo_enable(struct switch_dev *dev,
 571                                        const struct switch_attr *attr,
 572                                        struct switch_val *val)
 573 {
 574         struct b53_device *priv = sw_to_b53(dev);
 575
 576         val->value.i = priv->enable_jumbo;
 577
 578         return 0;
 579 }
 580
 581 static int b53_global_set_jumbo_enable(struct switch_dev *dev,
 582                                        const struct switch_attr *attr,
 583                                        struct switch_val *val)
 584 {
 585         struct b53_device *priv = sw_to_b53(dev);
 586
 587         priv->enable_jumbo = val->value.i;
 588
 589         return 0;
 590 }
 591
 592 static int b53_global_get_4095_enable(struct switch_dev *dev,
 593                                       const struct switch_attr *attr,
 594                                       struct switch_val *val)
 595 {
 596         struct b53_device *priv = sw_to_b53(dev);
 597
 598         val->value.i = priv->allow_vid_4095;
 599
 600         return 0;
 601 }
 602
 603 static int b53_global_set_4095_enable(struct switch_dev *dev,
 604                                       const struct switch_attr *attr,
 605                                       struct switch_val *val)
 606 {
 607         struct b53_device *priv = sw_to_b53(dev);
 608
 609         priv->allow_vid_4095 = val->value.i;
 610
 611         return 0;
 612 }
 613
 614 static int b53_global_get_ports(struct switch_dev *dev,
 615                                 const struct switch_attr *attr,
 616                                 struct switch_val *val)
 617 {
 618         struct b53_device *priv = sw_to_b53(dev);
 619
 620         val->len = snprintf(priv->buf, B53_BUF_SIZE, "0x%04x",
 621                             priv->enabled_ports);
 622         val->value.s = priv->buf;
 623
 624         return 0;
 625 }
 626
 627 static int b53_port_get_pvid(struct switch_dev *dev, int port, int *val)
 628 {
 629         struct b53_device *priv = sw_to_b53(dev);
 630
 631         *val = priv->ports[port].pvid;
 632
 633         return 0;
 634 }
 635
 636 static int b53_port_set_pvid(struct switch_dev *dev, int port, int val)
 637 {
 638         struct b53_device *priv = sw_to_b53(dev);
 639
 640         if (val > 15 && is5325(priv))
 641                 return -EINVAL;
 642         if (val == 4095 && !priv->allow_vid_4095)
 643                 return -EINVAL;
 644
 645         priv->ports[port].pvid = val;
 646
 647         return 0;
 648 }
 649
 650 static int b53_vlan_get_ports(struct switch_dev *dev, struct switch_val *val)
 651 {
 652         struct b53_device *priv = sw_to_b53(dev);
 653         struct switch_port *port = &val->value.ports[0];
 654         struct b53_vlan *vlan = &priv->vlans[val->port_vlan];
 655         int i;
 656
 657         val->len = 0;
 658
 659         if (!vlan->members)
 660                 return 0;
 661
 662         for (i = 0; i < dev->ports; i++) {
 663                 if (!(vlan->members & BIT(i)))
 664                         continue;
 665
 666
 667                 if (!(vlan->untag & BIT(i)))
 668                         port->flags = BIT(SWITCH_PORT_FLAG_TAGGED);
 669                 else
 670                         port->flags = 0;
 671
 672                 port->id = i;
 673                 val->len++;
 674                 port++;
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int b53_vlan_set_ports(struct switch_dev *dev, struct switch_val *val)
 681 {
 682         struct b53_device *priv = sw_to_b53(dev);
 683         struct switch_port *port;
 684         struct b53_vlan *vlan = &priv->vlans[val->port_vlan];
 685         int i;
 686
 687         /* only BCM5325 and BCM5365 supports VID 0 */
 688         if (val->port_vlan == 0 && !is5325(priv) && !is5365(priv))
 689                 return -EINVAL;
 690
 691         /* VLAN 4095 needs special handling */
 692         if (val->port_vlan == 4095 && !priv->allow_vid_4095)
 693                 return -EINVAL;
 694
 695         port = &val->value.ports[0];
 696         vlan->members = 0;
 697         vlan->untag = 0;
 698         for (i = 0; i < val->len; i++, port++) {
 699                 vlan->members |= BIT(port->id);
 700
 701                 if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED))) {
 702                         vlan->untag |= BIT(port->id);
 703                         priv->ports[port->id].pvid = val->port_vlan;
 704                 };
 705         }
 706
 707         /* ignore disabled ports */
 708         vlan->members &= priv->enabled_ports;
 709         vlan->untag &= priv->enabled_ports;
 710
 711         return 0;
 712 }
 713
 714 static int b53_port_get_link(struct switch_dev *dev, int port,
 715                              struct switch_port_link *link)
 716 {
 717         struct b53_device *priv = sw_to_b53(dev);
 718
 719         if (is_cpu_port(priv, port)) {
 720                 link->link = 1;
 721                 link->duplex = 1;
 722                 link->speed = is5325(priv) || is5365(priv) ?
 723                                 SWITCH_PORT_SPEED_100 : SWITCH_PORT_SPEED_1000;
 724                 link->aneg = 0;
 725         } else if (priv->enabled_ports & BIT(port)) {
 726                 u32 speed;
 727                 u16 lnk, duplex;
 728
 729                 b53_read16(priv, B53_STAT_PAGE, B53_LINK_STAT, &lnk);
 730                 b53_read16(priv, B53_STAT_PAGE, priv->duplex_reg, &duplex);
 731
 732                 lnk = (lnk >> port) & 1;
 733                 duplex = (duplex >> port) & 1;
 734
 735                 if (is5325(priv) || is5365(priv)) {
 736                         u16 tmp;
 737
 738                         b53_read16(priv, B53_STAT_PAGE, B53_SPEED_STAT, &tmp);
 739                         speed = SPEED_PORT_FE(tmp, port);
 740                 } else {
 741                         b53_read32(priv, B53_STAT_PAGE, B53_SPEED_STAT, &speed);
 742                         speed = SPEED_PORT_GE(speed, port);
 743                 }
 744
 745                 link->link = lnk;
 746                 if (lnk) {
 747                         link->duplex = duplex;
 748                         switch (speed) {
 749                         case SPEED_STAT_10M:
 750                                 link->speed = SWITCH_PORT_SPEED_10;
 751                                 break;
 752                         case SPEED_STAT_100M:
 753                                 link->speed = SWITCH_PORT_SPEED_100;
 754                                 break;
 755                         case SPEED_STAT_1000M:
 756                                 link->speed = SWITCH_PORT_SPEED_1000;
 757                                 break;
 758                         }
 759                 }
 760
 761                 link->aneg = 1;
 762         } else {
 763                 link->link = 0;
 764         }
 765
 766         return 0;
 767
 768 }
 769
 770 static int b53_global_reset_switch(struct switch_dev *dev)
 771 {
 772         struct b53_device *priv = sw_to_b53(dev);
 773
 774         /* reset vlans */
 775         priv->enable_vlan = 0;
 776         priv->enable_jumbo = 0;
 777         priv->allow_vid_4095 = 0;
 778
 779         memset(priv->vlans, 0, sizeof(priv->vlans) * dev->vlans);
 780         memset(priv->ports, 0, sizeof(priv->ports) * dev->ports);
 781
 782         return b53_switch_reset(priv);
 783 }
 784
 785 static int b53_global_apply_config(struct switch_dev *dev)
 786 {
 787         struct b53_device *priv = sw_to_b53(dev);
 788
 789         /* disable switching */
 790         b53_set_forwarding(priv, 0);
 791
 792         b53_apply(priv);
 793
 794         /* enable switching */
 795         b53_set_forwarding(priv, 1);
 796
 797         return 0;
 798 }
 799
 800
 801 static int b53_global_reset_mib(struct switch_dev *dev,
 802                                 const struct switch_attr *attr,
 803                                 struct switch_val *val)
 804 {
 805         struct b53_device *priv = sw_to_b53(dev);
 806         u8 gc;
 807
 808         b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
 809
 810         b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB);
 811         mdelay(1);
 812         b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB);
 813         mdelay(1);
 814
 815         return 0;
 816 }
 817
 818 static int b53_port_get_mib(struct switch_dev *sw_dev,
 819                             const struct switch_attr *attr,
 820                             struct switch_val *val)
 821 {
 822         struct b53_device *dev = sw_to_b53(sw_dev);
 823         const struct b53_mib_desc *mibs;
 824         int port = val->port_vlan;
 825         int len = 0;
 826
 827         if (!(BIT(port) & dev->enabled_ports))
 828                 return -1;
 829
 830         if (is5365(dev)) {
 831                 if (port == 5)
 832                         port = 8;
 833
 834                 mibs = b53_mibs_65;
 835         } else if (is63xx(dev)) {
 836                 mibs = b53_mibs_63xx;
 837         } else {
 838                 mibs = b53_mibs;
 839         }
 840
 841         dev->buf[0] = 0;
 842
 843         for (; mibs->size > 0; mibs++) {
 844                 u64 val;
 845
 846                 if (mibs->size == 8) {
 847                         b53_read64(dev, B53_MIB_PAGE(port), mibs->offset, &val);
 848                 } else {
 849                         u32 val32;
 850
 851                         b53_read32(dev, B53_MIB_PAGE(port), mibs->offset,
 852                                    &val32);
 853                         val = val32;
 854                 }
 855
 856                 len += snprintf(dev->buf + len, B53_BUF_SIZE - len,
 857                                 "%-20s: %llu\n", mibs->name, val);
 858         }
 859
 860         val->len = len;
 861         val->value.s = dev->buf;
 862
 863         return 0;
 864 }
 865
 866 static struct switch_attr b53_global_ops_25[] = {
 867         {
 868                 .type = SWITCH_TYPE_INT,
 869                 .name = "enable_vlan",
 870                 .description = "Enable VLAN mode",
 871                 .set = b53_global_set_vlan_enable,
 872                 .get = b53_global_get_vlan_enable,
 873                 .max = 1,
 874         },
 875         {
 876                 .type = SWITCH_TYPE_STRING,
 877                 .name = "ports",
 878                 .description = "Available ports (as bitmask)",
 879                 .get = b53_global_get_ports,
 880         },
 881 };
 882
 883 static struct switch_attr b53_global_ops_65[] = {
 884         {
 885                 .type = SWITCH_TYPE_INT,
 886                 .name = "enable_vlan",
 887                 .description = "Enable VLAN mode",
 888                 .set = b53_global_set_vlan_enable,
 889                 .get = b53_global_get_vlan_enable,
 890                 .max = 1,
 891         },
 892         {
 893                 .type = SWITCH_TYPE_STRING,
 894                 .name = "ports",
 895                 .description = "Available ports (as bitmask)",
 896                 .get = b53_global_get_ports,
 897         },
 898         {
 899                 .type = SWITCH_TYPE_INT,
 900                 .name = "reset_mib",
 901                 .description = "Reset MIB counters",
 902                 .set = b53_global_reset_mib,
 903         },
 904 };
 905
 906 static struct switch_attr b53_global_ops[] = {
 907         {
 908                 .type = SWITCH_TYPE_INT,
 909                 .name = "enable_vlan",
 910                 .description = "Enable VLAN mode",
 911                 .set = b53_global_set_vlan_enable,
 912                 .get = b53_global_get_vlan_enable,
 913                 .max = 1,
 914         },
 915         {
 916                 .type = SWITCH_TYPE_STRING,
 917                 .name = "ports",
 918                 .description = "Available Ports (as bitmask)",
 919                 .get = b53_global_get_ports,
 920         },
 921         {
 922                 .type = SWITCH_TYPE_INT,
 923                 .name = "reset_mib",
 924                 .description = "Reset MIB counters",
 925                 .set = b53_global_reset_mib,
 926         },
 927         {
 928                 .type = SWITCH_TYPE_INT,
 929                 .name = "enable_jumbo",
 930                 .description = "Enable Jumbo Frames",
 931                 .set = b53_global_set_jumbo_enable,
 932                 .get = b53_global_get_jumbo_enable,
 933                 .max = 1,
 934         },
 935         {
 936                 .type = SWITCH_TYPE_INT,
 937                 .name = "allow_vid_4095",
 938                 .description = "Allow VID 4095",
 939                 .set = b53_global_set_4095_enable,
 940                 .get = b53_global_get_4095_enable,
 941                 .max = 1,
 942         },
 943 };
 944
 945 static struct switch_attr b53_port_ops[] = {
 946         {
 947                 .type = SWITCH_TYPE_STRING,
 948                 .name = "mib",
 949                 .description = "Get port's MIB counters",
 950                 .get = b53_port_get_mib,
 951         },
 952 };
 953
 954 static struct switch_attr b53_no_ops[] = {
 955 };
 956
 957 static const struct switch_dev_ops b53_switch_ops_25 = {
 958         .attr_global = {
 959                 .attr = b53_global_ops_25,
 960                 .n_attr = ARRAY_SIZE(b53_global_ops_25),
 961         },
 962         .attr_port = {
 963                 .attr = b53_no_ops,
 964                 .n_attr = ARRAY_SIZE(b53_no_ops),
 965         },
 966         .attr_vlan = {
 967                 .attr = b53_no_ops,
 968                 .n_attr = ARRAY_SIZE(b53_no_ops),
 969         },
 970
 971         .get_vlan_ports = b53_vlan_get_ports,
 972         .set_vlan_ports = b53_vlan_set_ports,
 973         .get_port_pvid = b53_port_get_pvid,
 974         .set_port_pvid = b53_port_set_pvid,
 975         .apply_config = b53_global_apply_config,
 976         .reset_switch = b53_global_reset_switch,
 977         .get_port_link = b53_port_get_link,
 978 };
 979
 980 static const struct switch_dev_ops b53_switch_ops_65 = {
 981         .attr_global = {
 982                 .attr = b53_global_ops_65,
 983                 .n_attr = ARRAY_SIZE(b53_global_ops_65),
 984         },
 985         .attr_port = {
 986                 .attr = b53_port_ops,
 987                 .n_attr = ARRAY_SIZE(b53_port_ops),
 988         },
 989         .attr_vlan = {
 990                 .attr = b53_no_ops,
 991                 .n_attr = ARRAY_SIZE(b53_no_ops),
 992         },
 993
 994         .get_vlan_ports = b53_vlan_get_ports,
 995         .set_vlan_ports = b53_vlan_set_ports,
 996         .get_port_pvid = b53_port_get_pvid,
 997         .set_port_pvid = b53_port_set_pvid,
 998         .apply_config = b53_global_apply_config,
 999         .reset_switch = b53_global_reset_switch,
1000         .get_port_link = b53_port_get_link,
1001 };
1002
1003 static const struct switch_dev_ops b53_switch_ops = {
1004         .attr_global = {
1005                 .attr = b53_global_ops,
1006                 .n_attr = ARRAY_SIZE(b53_global_ops),
1007         },
1008         .attr_port = {
1009                 .attr = b53_port_ops,
1010                 .n_attr = ARRAY_SIZE(b53_port_ops),
1011         },
1012         .attr_vlan = {
1013                 .attr = b53_no_ops,
1014                 .n_attr = ARRAY_SIZE(b53_no_ops),
1015         },
1016
1017         .get_vlan_ports = b53_vlan_get_ports,
1018         .set_vlan_ports = b53_vlan_set_ports,
1019         .get_port_pvid = b53_port_get_pvid,
1020         .set_port_pvid = b53_port_set_pvid,
1021         .apply_config = b53_global_apply_config,
1022         .reset_switch = b53_global_reset_switch,
1023         .get_port_link = b53_port_get_link,
1024 };
1025
1026 struct b53_chip_data {
1027         u32 chip_id;
1028         const char *dev_name;
1029         const char *alias;
1030         u16 vlans;
1031         u16 enabled_ports;
1032         u8 cpu_port;
1033         u8 vta_regs[3];
1034         u8 duplex_reg;
1035         u8 jumbo_pm_reg;
1036         u8 jumbo_size_reg;
1037         const struct switch_dev_ops *sw_ops;
1038 };
1039
1040 #define B53_VTA_REGS    \
1041         { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
1042 #define B53_VTA_REGS_9798 \
1043         { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
1044 #define B53_VTA_REGS_63XX \
1045         { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
1046
1047 static const struct b53_chip_data b53_switch_chips[] = {
1048         {
1049                 .chip_id = BCM5325_DEVICE_ID,
1050                 .dev_name = "BCM5325",
1051                 .alias = "bcm5325",
1052                 .vlans = 16,
1053                 .enabled_ports = 0x1f,
1054                 .cpu_port = B53_CPU_PORT_25,
1055                 .duplex_reg = B53_DUPLEX_STAT_FE,
1056                 .sw_ops = &b53_switch_ops_25,
1057         },
1058         {
1059                 .chip_id = BCM5365_DEVICE_ID,
1060                 .dev_name = "BCM5365",
1061                 .alias = "bcm5365",
1062                 .vlans = 256,
1063                 .enabled_ports = 0x1f,
1064                 .cpu_port = B53_CPU_PORT_25,
1065                 .duplex_reg = B53_DUPLEX_STAT_FE,
1066                 .sw_ops = &b53_switch_ops_65,
1067         },
1068         {
1069                 .chip_id = BCM5395_DEVICE_ID,
1070                 .dev_name = "BCM5395",
1071                 .alias = "bcm5395",
1072                 .vlans = 4096,
1073                 .enabled_ports = 0x1f,
1074                 .cpu_port = B53_CPU_PORT,
1075                 .vta_regs = B53_VTA_REGS,
1076                 .duplex_reg = B53_DUPLEX_STAT_GE,
1077                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1078                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1079                 .sw_ops = &b53_switch_ops,
1080         },
1081         {
1082                 .chip_id = BCM5397_DEVICE_ID,
1083                 .dev_name = "BCM5397",
1084                 .alias = "bcm5397",
1085                 .vlans = 4096,
1086                 .enabled_ports = 0x1f,
1087                 .cpu_port = B53_CPU_PORT,
1088                 .vta_regs = B53_VTA_REGS_9798,
1089                 .duplex_reg = B53_DUPLEX_STAT_GE,
1090                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1091                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1092                 .sw_ops = &b53_switch_ops,
1093         },
1094         {
1095                 .chip_id = BCM5398_DEVICE_ID,
1096                 .dev_name = "BCM5398",
1097                 .alias = "bcm5398",
1098                 .vlans = 4096,
1099                 .enabled_ports = 0x7f,
1100                 .cpu_port = B53_CPU_PORT,
1101                 .vta_regs = B53_VTA_REGS_9798,
1102                 .duplex_reg = B53_DUPLEX_STAT_GE,
1103                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1104                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1105                 .sw_ops = &b53_switch_ops,
1106         },
1107         {
1108                 .chip_id = BCM53115_DEVICE_ID,
1109                 .dev_name = "BCM53115",
1110                 .alias = "bcm53115",
1111                 .vlans = 4096,
1112                 .enabled_ports = 0x1f,
1113                 .vta_regs = B53_VTA_REGS,
1114                 .cpu_port = B53_CPU_PORT,
1115                 .duplex_reg = B53_DUPLEX_STAT_GE,
1116                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1117                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1118                 .sw_ops = &b53_switch_ops,
1119         },
1120         {
1121                 .chip_id = BCM53125_DEVICE_ID,
1122                 .dev_name = "BCM53125",
1123                 .alias = "bcm53125",
1124                 .vlans = 4096,
1125                 .enabled_ports = 0x1f,
1126                 .cpu_port = B53_CPU_PORT,
1127                 .vta_regs = B53_VTA_REGS,
1128                 .duplex_reg = B53_DUPLEX_STAT_GE,
1129                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1130                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1131                 .sw_ops = &b53_switch_ops,
1132         },
1133         {
1134                 .chip_id = BCM53128_DEVICE_ID,
1135                 .dev_name = "BCM53128",
1136                 .alias = "bcm53128",
1137                 .vlans = 4096,
1138                 .enabled_ports = 0x1ff,
1139                 .cpu_port = B53_CPU_PORT,
1140                 .vta_regs = B53_VTA_REGS,
1141                 .duplex_reg = B53_DUPLEX_STAT_GE,
1142                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1143                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1144                 .sw_ops = &b53_switch_ops,
1145         },
1146         {
1147                 .chip_id = BCM63XX_DEVICE_ID,
1148                 .dev_name = "BCM63xx",
1149                 .alias = "bcm63xx",
1150                 .vlans = 4096,
1151                 .enabled_ports = 0, /* pdata must provide them */
1152                 .cpu_port = B53_CPU_PORT,
1153                 .vta_regs = B53_VTA_REGS_63XX,
1154                 .duplex_reg = B53_DUPLEX_STAT_63XX,
1155                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
1156                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
1157                 .sw_ops = &b53_switch_ops,
1158         },
1159         {
1160                 .chip_id = BCM53010_DEVICE_ID,
1161                 .dev_name = "BCM53010",
1162                 .alias = "bcm53011",
1163                 .vlans = 4096,
1164                 .enabled_ports = 0x1f,
1165                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1166                 .vta_regs = B53_VTA_REGS,
1167                 .duplex_reg = B53_DUPLEX_STAT_GE,
1168                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1169                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1170                 .sw_ops = &b53_switch_ops,
1171         },
1172         {
1173                 .chip_id = BCM53011_DEVICE_ID,
1174                 .dev_name = "BCM53011",
1175                 .alias = "bcm53011",
1176                 .vlans = 4096,
1177                 .enabled_ports = 0x1f,
1178                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1179                 .vta_regs = B53_VTA_REGS,
1180                 .duplex_reg = B53_DUPLEX_STAT_GE,
1181                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1182                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1183                 .sw_ops = &b53_switch_ops,
1184         },
1185         {
1186                 .chip_id = BCM53012_DEVICE_ID,
1187                 .dev_name = "BCM53012",
1188                 .alias = "bcm53011",
1189                 .vlans = 4096,
1190                 .enabled_ports = 0x1f,
1191                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1192                 .vta_regs = B53_VTA_REGS,
1193                 .duplex_reg = B53_DUPLEX_STAT_GE,
1194                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1195                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1196                 .sw_ops = &b53_switch_ops,
1197         },
1198         {
1199                 .chip_id = BCM53018_DEVICE_ID,
1200                 .dev_name = "BCM53018",
1201                 .alias = "bcm53018",
1202                 .vlans = 4096,
1203                 .enabled_ports = 0x1f,
1204                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1205                 .vta_regs = B53_VTA_REGS,
1206                 .duplex_reg = B53_DUPLEX_STAT_GE,
1207                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1208                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1209                 .sw_ops = &b53_switch_ops,
1210         },
1211         {
1212                 .chip_id = BCM53019_DEVICE_ID,
1213                 .dev_name = "BCM53019",
1214                 .alias = "bcm53019",
1215                 .vlans = 4096,
1216                 .enabled_ports = 0x1f,
1217                 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1218                 .vta_regs = B53_VTA_REGS,
1219                 .duplex_reg = B53_DUPLEX_STAT_GE,
1220                 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1221                 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1222                 .sw_ops = &b53_switch_ops,
1223         },
1224 };
1225
1226 static int b53_switch_init(struct b53_device *dev)
1227 {
1228         struct switch_dev *sw_dev = &dev->sw_dev;
1229         unsigned i;
1230         int ret;
1231
1232         for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
1233                 const struct b53_chip_data *chip = &b53_switch_chips[i];
1234
1235                 if (chip->chip_id == dev->chip_id) {
1236                         sw_dev->name = chip->dev_name;
1237                         if (!sw_dev->alias)
1238                                 sw_dev->alias = chip->alias;
1239                         if (!dev->enabled_ports)
1240                                 dev->enabled_ports = chip->enabled_ports;
1241                         dev->duplex_reg = chip->duplex_reg;
1242                         dev->vta_regs[0] = chip->vta_regs[0];
1243                         dev->vta_regs[1] = chip->vta_regs[1];
1244                         dev->vta_regs[2] = chip->vta_regs[2];
1245                         dev->jumbo_pm_reg = chip->jumbo_pm_reg;
1246                         sw_dev->ops = chip->sw_ops;
1247                         sw_dev->cpu_port = chip->cpu_port;
1248                         sw_dev->vlans = chip->vlans;
1249                         break;
1250                 }
1251         }
1252
1253         if (!sw_dev->name)
1254                 return -EINVAL;
1255
1256         /* check which BCM5325x version we have */
1257         if (is5325(dev)) {
1258                 u8 vc4;
1259
1260                 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
1261
1262                 /* check reserved bits */
1263                 switch (vc4 & 3) {
1264                 case 1:
1265                         /* BCM5325E */
1266                         break;
1267                 case 3:
1268                         /* BCM5325F - do not use port 4 */
1269                         dev->enabled_ports &= ~BIT(4);
1270                         break;
1271                 default:
1272 /* On the BCM47XX SoCs this is the supported internal switch.*/
1273 #ifndef CONFIG_BCM47XX
1274                         /* BCM5325M */
1275                         return -EINVAL;
1276 #else
1277                         break;
1278 #endif
1279                 }
1280         } else if (dev->chip_id == BCM53115_DEVICE_ID) {
1281                 u64 strap_value;
1282
1283                 b53_read48(dev, B53_STAT_PAGE, B53_STRAP_VALUE, &strap_value);
1284                 /* use second IMP port if GMII is enabled */
1285                 if (strap_value & SV_GMII_CTRL_115)
1286                         sw_dev->cpu_port = 5;
1287         }
1288
1289         /* cpu port is always last */
1290         sw_dev->ports = sw_dev->cpu_port + 1;
1291         dev->enabled_ports |= BIT(sw_dev->cpu_port);
1292
1293         dev->ports = devm_kzalloc(dev->dev,
1294                                   sizeof(struct b53_port) * sw_dev->ports,
1295                                   GFP_KERNEL);
1296         if (!dev->ports)
1297                 return -ENOMEM;
1298
1299         dev->vlans = devm_kzalloc(dev->dev,
1300                                   sizeof(struct b53_vlan) * sw_dev->vlans,
1301                                   GFP_KERNEL);
1302         if (!dev->vlans)
1303                 return -ENOMEM;
1304
1305         dev->buf = devm_kzalloc(dev->dev, B53_BUF_SIZE, GFP_KERNEL);
1306         if (!dev->buf)
1307                 return -ENOMEM;
1308
1309         dev->reset_gpio = b53_switch_get_reset_gpio(dev);
1310         if (dev->reset_gpio >= 0) {
1311                 ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
1312                                             GPIOF_OUT_INIT_HIGH, "robo_reset");
1313                 if (ret)
1314                         return ret;
1315         }
1316
1317         return b53_switch_reset(dev);
1318 }
1319
1320 struct b53_device *b53_switch_alloc(struct device *base, struct b53_io_ops *ops,
1321                                     void *priv)
1322 {
1323         struct b53_device *dev;
1324
1325         dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL);
1326         if (!dev)
1327                 return NULL;
1328
1329         dev->dev = base;
1330         dev->ops = ops;
1331         dev->priv = priv;
1332         mutex_init(&dev->reg_mutex);
1333
1334         return dev;
1335 }
1336 EXPORT_SYMBOL(b53_switch_alloc);
1337
1338 int b53_switch_detect(struct b53_device *dev)
1339 {
1340         u32 id32;
1341         u16 tmp;
1342         u8 id8;
1343         int ret;
1344
1345         ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
1346         if (ret)
1347                 return ret;
1348
1349         switch (id8) {
1350         case 0:
1351                 /*
1352                  * BCM5325 and BCM5365 do not have this register so reads
1353                  * return 0. But the read operation did succeed, so assume
1354                  * this is one of them.
1355                  *
1356                  * Next check if we can write to the 5325's VTA register; for
1357                  * 5365 it is read only.
1358                  */
1359
1360                 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
1361                 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
1362
1363                 if (tmp == 0xf)
1364                         dev->chip_id = BCM5325_DEVICE_ID;
1365                 else
1366                         dev->chip_id = BCM5365_DEVICE_ID;
1367                 break;
1368         case BCM5395_DEVICE_ID:
1369         case BCM5397_DEVICE_ID:
1370         case BCM5398_DEVICE_ID:
1371                 dev->chip_id = id8;
1372                 break;
1373         default:
1374                 ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
1375                 if (ret)
1376                         return ret;
1377
1378                 switch (id32) {
1379                 case BCM53115_DEVICE_ID:
1380                 case BCM53125_DEVICE_ID:
1381                 case BCM53128_DEVICE_ID:
1382                 case BCM53010_DEVICE_ID:
1383                 case BCM53011_DEVICE_ID:
1384                 case BCM53012_DEVICE_ID:
1385                 case BCM53018_DEVICE_ID:
1386                 case BCM53019_DEVICE_ID:
1387                         dev->chip_id = id32;
1388                         break;
1389                 default:
1390                         pr_err("unsupported switch detected (BCM53%02x/BCM%x)\n",
1391                                id8, id32);
1392                         return -ENODEV;
1393                 }
1394         }
1395
1396         if (dev->chip_id == BCM5325_DEVICE_ID)
1397                 return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
1398                                  &dev->core_rev);
1399         else
1400                 return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
1401                                  &dev->core_rev);
1402 }
1403 EXPORT_SYMBOL(b53_switch_detect);
1404
1405 int b53_switch_register(struct b53_device *dev)
1406 {
1407         int ret;
1408
1409         if (dev->pdata) {
1410                 dev->chip_id = dev->pdata->chip_id;
1411                 dev->enabled_ports = dev->pdata->enabled_ports;
1412                 dev->sw_dev.alias = dev->pdata->alias;
1413         }
1414
1415         if (!dev->chip_id && b53_switch_detect(dev))
1416                 return -EINVAL;
1417
1418         ret = b53_switch_init(dev);
1419         if (ret)
1420                 return ret;
1421
1422         pr_info("found switch: %s, rev %i\n", dev->sw_dev.name, dev->core_rev);
1423
1424         return register_switch(&dev->sw_dev, NULL);
1425 }
1426 EXPORT_SYMBOL(b53_switch_register);
1427
1428 MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
1429 MODULE_DESCRIPTION("B53 switch library");
1430 MODULE_LICENSE("Dual BSD/GPL");