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