target/linux/generic/files/drivers/net/phy/ar8327.c

   1 /*
   2  * ar8327.c: AR8216 switch driver
   3  *
   4  * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
   5  * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/bitops.h>
  20 #include <linux/switch.h>
  21 #include <linux/delay.h>
  22 #include <linux/phy.h>
  23 #include <linux/lockdep.h>
  24 #include <linux/ar8216_platform.h>
  25 #include <linux/workqueue.h>
  26 #include <linux/of_device.h>
  27 #include <linux/leds.h>
  28 #include <linux/mdio.h>
  29
  30 #include "ar8216.h"
  31 #include "ar8327.h"
  32
  33 extern const struct ar8xxx_mib_desc ar8236_mibs[39];
  34 extern const struct switch_attr ar8xxx_sw_attr_vlan[1];
  35
  36 static u32
  37 ar8327_get_pad_cfg(struct ar8327_pad_cfg *cfg)
  38 {
  39         u32 t;
  40
  41         if (!cfg)
  42                 return 0;
  43
  44         t = 0;
  45         switch (cfg->mode) {
  46         case AR8327_PAD_NC:
  47                 break;
  48
  49         case AR8327_PAD_MAC2MAC_MII:
  50                 t = AR8327_PAD_MAC_MII_EN;
  51                 if (cfg->rxclk_sel)
  52                         t |= AR8327_PAD_MAC_MII_RXCLK_SEL;
  53                 if (cfg->txclk_sel)
  54                         t |= AR8327_PAD_MAC_MII_TXCLK_SEL;
  55                 break;
  56
  57         case AR8327_PAD_MAC2MAC_GMII:
  58                 t = AR8327_PAD_MAC_GMII_EN;
  59                 if (cfg->rxclk_sel)
  60                         t |= AR8327_PAD_MAC_GMII_RXCLK_SEL;
  61                 if (cfg->txclk_sel)
  62                         t |= AR8327_PAD_MAC_GMII_TXCLK_SEL;
  63                 break;
  64
  65         case AR8327_PAD_MAC_SGMII:
  66                 t = AR8327_PAD_SGMII_EN;
  67
  68                 /*
  69                  * WAR for the QUalcomm Atheros AP136 board.
  70                  * It seems that RGMII TX/RX delay settings needs to be
  71                  * applied for SGMII mode as well, The ethernet is not
  72                  * reliable without this.
  73                  */
  74                 t |= cfg->txclk_delay_sel << AR8327_PAD_RGMII_TXCLK_DELAY_SEL_S;
  75                 t |= cfg->rxclk_delay_sel << AR8327_PAD_RGMII_RXCLK_DELAY_SEL_S;
  76                 if (cfg->rxclk_delay_en)
  77                         t |= AR8327_PAD_RGMII_RXCLK_DELAY_EN;
  78                 if (cfg->txclk_delay_en)
  79                         t |= AR8327_PAD_RGMII_TXCLK_DELAY_EN;
  80
  81                 if (cfg->sgmii_delay_en)
  82                         t |= AR8327_PAD_SGMII_DELAY_EN;
  83
  84                 break;
  85
  86         case AR8327_PAD_MAC2PHY_MII:
  87                 t = AR8327_PAD_PHY_MII_EN;
  88                 if (cfg->rxclk_sel)
  89                         t |= AR8327_PAD_PHY_MII_RXCLK_SEL;
  90                 if (cfg->txclk_sel)
  91                         t |= AR8327_PAD_PHY_MII_TXCLK_SEL;
  92                 break;
  93
  94         case AR8327_PAD_MAC2PHY_GMII:
  95                 t = AR8327_PAD_PHY_GMII_EN;
  96                 if (cfg->pipe_rxclk_sel)
  97                         t |= AR8327_PAD_PHY_GMII_PIPE_RXCLK_SEL;
  98                 if (cfg->rxclk_sel)
  99                         t |= AR8327_PAD_PHY_GMII_RXCLK_SEL;
 100                 if (cfg->txclk_sel)
 101                         t |= AR8327_PAD_PHY_GMII_TXCLK_SEL;
 102                 break;
 103
 104         case AR8327_PAD_MAC_RGMII:
 105                 t = AR8327_PAD_RGMII_EN;
 106                 t |= cfg->txclk_delay_sel << AR8327_PAD_RGMII_TXCLK_DELAY_SEL_S;
 107                 t |= cfg->rxclk_delay_sel << AR8327_PAD_RGMII_RXCLK_DELAY_SEL_S;
 108                 if (cfg->rxclk_delay_en)
 109                         t |= AR8327_PAD_RGMII_RXCLK_DELAY_EN;
 110                 if (cfg->txclk_delay_en)
 111                         t |= AR8327_PAD_RGMII_TXCLK_DELAY_EN;
 112                 break;
 113
 114         case AR8327_PAD_PHY_GMII:
 115                 t = AR8327_PAD_PHYX_GMII_EN;
 116                 break;
 117
 118         case AR8327_PAD_PHY_RGMII:
 119                 t = AR8327_PAD_PHYX_RGMII_EN;
 120                 break;
 121
 122         case AR8327_PAD_PHY_MII:
 123                 t = AR8327_PAD_PHYX_MII_EN;
 124                 break;
 125         }
 126
 127         return t;
 128 }
 129
 130 static void
 131 ar8327_phy_fixup(struct ar8xxx_priv *priv, int phy)
 132 {
 133         switch (priv->chip_rev) {
 134         case 1:
 135                 /* For 100M waveform */
 136                 ar8xxx_phy_dbg_write(priv, phy, 0, 0x02ea);
 137                 /* Turn on Gigabit clock */
 138                 ar8xxx_phy_dbg_write(priv, phy, 0x3d, 0x68a0);
 139                 break;
 140
 141         case 2:
 142                 ar8xxx_phy_mmd_write(priv, phy, 0x7, 0x3c);
 143                 ar8xxx_phy_mmd_write(priv, phy, 0x4007, 0x0);
 144                 /* fallthrough */
 145         case 4:
 146                 ar8xxx_phy_mmd_write(priv, phy, 0x3, 0x800d);
 147                 ar8xxx_phy_mmd_write(priv, phy, 0x4003, 0x803f);
 148
 149                 ar8xxx_phy_dbg_write(priv, phy, 0x3d, 0x6860);
 150                 ar8xxx_phy_dbg_write(priv, phy, 0x5, 0x2c46);
 151                 ar8xxx_phy_dbg_write(priv, phy, 0x3c, 0x6000);
 152                 break;
 153         }
 154 }
 155
 156 static u32
 157 ar8327_get_port_init_status(struct ar8327_port_cfg *cfg)
 158 {
 159         u32 t;
 160
 161         if (!cfg->force_link)
 162                 return AR8216_PORT_STATUS_LINK_AUTO;
 163
 164         t = AR8216_PORT_STATUS_TXMAC | AR8216_PORT_STATUS_RXMAC;
 165         t |= cfg->duplex ? AR8216_PORT_STATUS_DUPLEX : 0;
 166         t |= cfg->rxpause ? AR8216_PORT_STATUS_RXFLOW : 0;
 167         t |= cfg->txpause ? AR8216_PORT_STATUS_TXFLOW : 0;
 168
 169         switch (cfg->speed) {
 170         case AR8327_PORT_SPEED_10:
 171                 t |= AR8216_PORT_SPEED_10M;
 172                 break;
 173         case AR8327_PORT_SPEED_100:
 174                 t |= AR8216_PORT_SPEED_100M;
 175                 break;
 176         case AR8327_PORT_SPEED_1000:
 177                 t |= AR8216_PORT_SPEED_1000M;
 178                 break;
 179         }
 180
 181         return t;
 182 }
 183
 184 #define AR8327_LED_ENTRY(_num, _reg, _shift) \
 185         [_num] = { .reg = (_reg), .shift = (_shift) }
 186
 187 static const struct ar8327_led_entry
 188 ar8327_led_map[AR8327_NUM_LEDS] = {
 189         AR8327_LED_ENTRY(AR8327_LED_PHY0_0, 0, 14),
 190         AR8327_LED_ENTRY(AR8327_LED_PHY0_1, 1, 14),
 191         AR8327_LED_ENTRY(AR8327_LED_PHY0_2, 2, 14),
 192
 193         AR8327_LED_ENTRY(AR8327_LED_PHY1_0, 3, 8),
 194         AR8327_LED_ENTRY(AR8327_LED_PHY1_1, 3, 10),
 195         AR8327_LED_ENTRY(AR8327_LED_PHY1_2, 3, 12),
 196
 197         AR8327_LED_ENTRY(AR8327_LED_PHY2_0, 3, 14),
 198         AR8327_LED_ENTRY(AR8327_LED_PHY2_1, 3, 16),
 199         AR8327_LED_ENTRY(AR8327_LED_PHY2_2, 3, 18),
 200
 201         AR8327_LED_ENTRY(AR8327_LED_PHY3_0, 3, 20),
 202         AR8327_LED_ENTRY(AR8327_LED_PHY3_1, 3, 22),
 203         AR8327_LED_ENTRY(AR8327_LED_PHY3_2, 3, 24),
 204
 205         AR8327_LED_ENTRY(AR8327_LED_PHY4_0, 0, 30),
 206         AR8327_LED_ENTRY(AR8327_LED_PHY4_1, 1, 30),
 207         AR8327_LED_ENTRY(AR8327_LED_PHY4_2, 2, 30),
 208 };
 209
 210 static void
 211 ar8327_set_led_pattern(struct ar8xxx_priv *priv, unsigned int led_num,
 212                        enum ar8327_led_pattern pattern)
 213 {
 214         const struct ar8327_led_entry *entry;
 215
 216         entry = &ar8327_led_map[led_num];
 217         ar8xxx_rmw(priv, AR8327_REG_LED_CTRL(entry->reg),
 218                    (3 << entry->shift), pattern << entry->shift);
 219 }
 220
 221 static void
 222 ar8327_led_work_func(struct work_struct *work)
 223 {
 224         struct ar8327_led *aled;
 225         u8 pattern;
 226
 227         aled = container_of(work, struct ar8327_led, led_work);
 228
 229         spin_lock(&aled->lock);
 230         pattern = aled->pattern;
 231         spin_unlock(&aled->lock);
 232
 233         ar8327_set_led_pattern(aled->sw_priv, aled->led_num,
 234                                pattern);
 235 }
 236
 237 static void
 238 ar8327_led_schedule_change(struct ar8327_led *aled, u8 pattern)
 239 {
 240         if (aled->pattern == pattern)
 241                 return;
 242
 243         aled->pattern = pattern;
 244         schedule_work(&aled->led_work);
 245 }
 246
 247 static inline struct ar8327_led *
 248 led_cdev_to_ar8327_led(struct led_classdev *led_cdev)
 249 {
 250         return container_of(led_cdev, struct ar8327_led, cdev);
 251 }
 252
 253 static int
 254 ar8327_led_blink_set(struct led_classdev *led_cdev,
 255                      unsigned long *delay_on,
 256                      unsigned long *delay_off)
 257 {
 258         struct ar8327_led *aled = led_cdev_to_ar8327_led(led_cdev);
 259
 260         if (*delay_on == 0 && *delay_off == 0) {
 261                 *delay_on = 125;
 262                 *delay_off = 125;
 263         }
 264
 265         if (*delay_on != 125 || *delay_off != 125) {
 266                 /*
 267                  * The hardware only supports blinking at 4Hz. Fall back
 268                  * to software implementation in other cases.
 269                  */
 270                 return -EINVAL;
 271         }
 272
 273         spin_lock(&aled->lock);
 274
 275         aled->enable_hw_mode = false;
 276         ar8327_led_schedule_change(aled, AR8327_LED_PATTERN_BLINK);
 277
 278         spin_unlock(&aled->lock);
 279
 280         return 0;
 281 }
 282
 283 static void
 284 ar8327_led_set_brightness(struct led_classdev *led_cdev,
 285                           enum led_brightness brightness)
 286 {
 287         struct ar8327_led *aled = led_cdev_to_ar8327_led(led_cdev);
 288         u8 pattern;
 289         bool active;
 290
 291         active = (brightness != LED_OFF);
 292         active ^= aled->active_low;
 293
 294         pattern = (active) ? AR8327_LED_PATTERN_ON :
 295                              AR8327_LED_PATTERN_OFF;
 296
 297         spin_lock(&aled->lock);
 298
 299         aled->enable_hw_mode = false;
 300         ar8327_led_schedule_change(aled, pattern);
 301
 302         spin_unlock(&aled->lock);
 303 }
 304
 305 static ssize_t
 306 ar8327_led_enable_hw_mode_show(struct device *dev,
 307                                struct device_attribute *attr,
 308                                char *buf)
 309 {
 310         struct led_classdev *led_cdev = dev_get_drvdata(dev);
 311         struct ar8327_led *aled = led_cdev_to_ar8327_led(led_cdev);
 312         ssize_t ret = 0;
 313
 314         spin_lock(&aled->lock);
 315         ret += sprintf(buf, "%d\n", aled->enable_hw_mode);
 316         spin_unlock(&aled->lock);
 317
 318         return ret;
 319 }
 320
 321 static ssize_t
 322 ar8327_led_enable_hw_mode_store(struct device *dev,
 323                                 struct device_attribute *attr,
 324                                 const char *buf,
 325                                 size_t size)
 326 {
 327         struct led_classdev *led_cdev = dev_get_drvdata(dev);
 328         struct ar8327_led *aled = led_cdev_to_ar8327_led(led_cdev);
 329         u8 pattern;
 330         u8 value;
 331         int ret;
 332
 333         ret = kstrtou8(buf, 10, &value);
 334         if (ret < 0)
 335                 return -EINVAL;
 336
 337         spin_lock(&aled->lock);
 338
 339         aled->enable_hw_mode = !!value;
 340         if (aled->enable_hw_mode)
 341                 pattern = AR8327_LED_PATTERN_RULE;
 342         else
 343                 pattern = AR8327_LED_PATTERN_OFF;
 344
 345         ar8327_led_schedule_change(aled, pattern);
 346
 347         spin_unlock(&aled->lock);
 348
 349         return size;
 350 }
 351
 352 static DEVICE_ATTR(enable_hw_mode,  S_IRUGO | S_IWUSR,
 353                    ar8327_led_enable_hw_mode_show,
 354                    ar8327_led_enable_hw_mode_store);
 355
 356 static int
 357 ar8327_led_register(struct ar8327_led *aled)
 358 {
 359         int ret;
 360
 361         ret = led_classdev_register(NULL, &aled->cdev);
 362         if (ret < 0)
 363                 return ret;
 364
 365         if (aled->mode == AR8327_LED_MODE_HW) {
 366                 ret = device_create_file(aled->cdev.dev,
 367                                          &dev_attr_enable_hw_mode);
 368                 if (ret)
 369                         goto err_unregister;
 370         }
 371
 372         return 0;
 373
 374 err_unregister:
 375         led_classdev_unregister(&aled->cdev);
 376         return ret;
 377 }
 378
 379 static void
 380 ar8327_led_unregister(struct ar8327_led *aled)
 381 {
 382         if (aled->mode == AR8327_LED_MODE_HW)
 383                 device_remove_file(aled->cdev.dev, &dev_attr_enable_hw_mode);
 384
 385         led_classdev_unregister(&aled->cdev);
 386         cancel_work_sync(&aled->led_work);
 387 }
 388
 389 static int
 390 ar8327_led_create(struct ar8xxx_priv *priv,
 391                   const struct ar8327_led_info *led_info)
 392 {
 393         struct ar8327_data *data = priv->chip_data;
 394         struct ar8327_led *aled;
 395         int ret;
 396
 397         if (!IS_ENABLED(CONFIG_AR8216_PHY_LEDS))
 398                 return 0;
 399
 400         if (!led_info->name)
 401                 return -EINVAL;
 402
 403         if (led_info->led_num >= AR8327_NUM_LEDS)
 404                 return -EINVAL;
 405
 406         aled = kzalloc(sizeof(*aled) + strlen(led_info->name) + 1,
 407                        GFP_KERNEL);
 408         if (!aled)
 409                 return -ENOMEM;
 410
 411         aled->sw_priv = priv;
 412         aled->led_num = led_info->led_num;
 413         aled->active_low = led_info->active_low;
 414         aled->mode = led_info->mode;
 415
 416         if (aled->mode == AR8327_LED_MODE_HW)
 417                 aled->enable_hw_mode = true;
 418
 419         aled->name = (char *)(aled + 1);
 420         strcpy(aled->name, led_info->name);
 421
 422         aled->cdev.name = aled->name;
 423         aled->cdev.brightness_set = ar8327_led_set_brightness;
 424         aled->cdev.blink_set = ar8327_led_blink_set;
 425         aled->cdev.default_trigger = led_info->default_trigger;
 426
 427         spin_lock_init(&aled->lock);
 428         mutex_init(&aled->mutex);
 429         INIT_WORK(&aled->led_work, ar8327_led_work_func);
 430
 431         ret = ar8327_led_register(aled);
 432         if (ret)
 433                 goto err_free;
 434
 435         data->leds[data->num_leds++] = aled;
 436
 437         return 0;
 438
 439 err_free:
 440         kfree(aled);
 441         return ret;
 442 }
 443
 444 static void
 445 ar8327_led_destroy(struct ar8327_led *aled)
 446 {
 447         ar8327_led_unregister(aled);
 448         kfree(aled);
 449 }
 450
 451 static void
 452 ar8327_leds_init(struct ar8xxx_priv *priv)
 453 {
 454         struct ar8327_data *data = priv->chip_data;
 455         unsigned i;
 456
 457         if (!IS_ENABLED(CONFIG_AR8216_PHY_LEDS))
 458                 return;
 459
 460         for (i = 0; i < data->num_leds; i++) {
 461                 struct ar8327_led *aled;
 462
 463                 aled = data->leds[i];
 464
 465                 if (aled->enable_hw_mode)
 466                         aled->pattern = AR8327_LED_PATTERN_RULE;
 467                 else
 468                         aled->pattern = AR8327_LED_PATTERN_OFF;
 469
 470                 ar8327_set_led_pattern(priv, aled->led_num, aled->pattern);
 471         }
 472 }
 473
 474 static void
 475 ar8327_leds_cleanup(struct ar8xxx_priv *priv)
 476 {
 477         struct ar8327_data *data = priv->chip_data;
 478         unsigned i;
 479
 480         if (!IS_ENABLED(CONFIG_AR8216_PHY_LEDS))
 481                 return;
 482
 483         for (i = 0; i < data->num_leds; i++) {
 484                 struct ar8327_led *aled;
 485
 486                 aled = data->leds[i];
 487                 ar8327_led_destroy(aled);
 488         }
 489
 490         kfree(data->leds);
 491 }
 492
 493 static int
 494 ar8327_hw_config_pdata(struct ar8xxx_priv *priv,
 495                        struct ar8327_platform_data *pdata)
 496 {
 497         struct ar8327_led_cfg *led_cfg;
 498         struct ar8327_data *data = priv->chip_data;
 499         u32 pos, new_pos;
 500         u32 t;
 501
 502         if (!pdata)
 503                 return -EINVAL;
 504
 505         priv->get_port_link = pdata->get_port_link;
 506
 507         data->port0_status = ar8327_get_port_init_status(&pdata->port0_cfg);
 508         data->port6_status = ar8327_get_port_init_status(&pdata->port6_cfg);
 509
 510         t = ar8327_get_pad_cfg(pdata->pad0_cfg);
 511         if (chip_is_ar8337(priv))
 512                 t |= AR8337_PAD_MAC06_EXCHANGE_EN;
 513
 514         ar8xxx_write(priv, AR8327_REG_PAD0_MODE, t);
 515         t = ar8327_get_pad_cfg(pdata->pad5_cfg);
 516         ar8xxx_write(priv, AR8327_REG_PAD5_MODE, t);
 517         t = ar8327_get_pad_cfg(pdata->pad6_cfg);
 518         ar8xxx_write(priv, AR8327_REG_PAD6_MODE, t);
 519
 520         pos = ar8xxx_read(priv, AR8327_REG_POWER_ON_STRIP);
 521         new_pos = pos;
 522
 523         led_cfg = pdata->led_cfg;
 524         if (led_cfg) {
 525                 if (led_cfg->open_drain)
 526                         new_pos |= AR8327_POWER_ON_STRIP_LED_OPEN_EN;
 527                 else
 528                         new_pos &= ~AR8327_POWER_ON_STRIP_LED_OPEN_EN;
 529
 530                 ar8xxx_write(priv, AR8327_REG_LED_CTRL0, led_cfg->led_ctrl0);
 531                 ar8xxx_write(priv, AR8327_REG_LED_CTRL1, led_cfg->led_ctrl1);
 532                 ar8xxx_write(priv, AR8327_REG_LED_CTRL2, led_cfg->led_ctrl2);
 533                 ar8xxx_write(priv, AR8327_REG_LED_CTRL3, led_cfg->led_ctrl3);
 534
 535                 if (new_pos != pos)
 536                         new_pos |= AR8327_POWER_ON_STRIP_POWER_ON_SEL;
 537         }
 538
 539         if (pdata->sgmii_cfg) {
 540                 t = pdata->sgmii_cfg->sgmii_ctrl;
 541                 if (priv->chip_rev == 1)
 542                         t |= AR8327_SGMII_CTRL_EN_PLL |
 543                              AR8327_SGMII_CTRL_EN_RX |
 544                              AR8327_SGMII_CTRL_EN_TX;
 545                 else
 546                         t &= ~(AR8327_SGMII_CTRL_EN_PLL |
 547                                AR8327_SGMII_CTRL_EN_RX |
 548                                AR8327_SGMII_CTRL_EN_TX);
 549
 550                 ar8xxx_write(priv, AR8327_REG_SGMII_CTRL, t);
 551
 552                 if (pdata->sgmii_cfg->serdes_aen)
 553                         new_pos &= ~AR8327_POWER_ON_STRIP_SERDES_AEN;
 554                 else
 555                         new_pos |= AR8327_POWER_ON_STRIP_SERDES_AEN;
 556         }
 557
 558         ar8xxx_write(priv, AR8327_REG_POWER_ON_STRIP, new_pos);
 559
 560         if (pdata->leds && pdata->num_leds) {
 561                 int i;
 562
 563                 data->leds = kzalloc(pdata->num_leds * sizeof(void *),
 564                                      GFP_KERNEL);
 565                 if (!data->leds)
 566                         return -ENOMEM;
 567
 568                 for (i = 0; i < pdata->num_leds; i++)
 569                         ar8327_led_create(priv, &pdata->leds[i]);
 570         }
 571
 572         return 0;
 573 }
 574
 575 #ifdef CONFIG_OF
 576 static int
 577 ar8327_hw_config_of(struct ar8xxx_priv *priv, struct device_node *np)
 578 {
 579         struct ar8327_data *data = priv->chip_data;
 580         const __be32 *paddr;
 581         int len;
 582         int i;
 583
 584         paddr = of_get_property(np, "qca,ar8327-initvals", &len);
 585         if (!paddr || len < (2 * sizeof(*paddr)))
 586                 return -EINVAL;
 587
 588         len /= sizeof(*paddr);
 589
 590         for (i = 0; i < len - 1; i += 2) {
 591                 u32 reg;
 592                 u32 val;
 593
 594                 reg = be32_to_cpup(paddr + i);
 595                 val = be32_to_cpup(paddr + i + 1);
 596
 597                 switch (reg) {
 598                 case AR8327_REG_PORT_STATUS(0):
 599                         data->port0_status = val;
 600                         break;
 601                 case AR8327_REG_PORT_STATUS(6):
 602                         data->port6_status = val;
 603                         break;
 604                 default:
 605                         ar8xxx_write(priv, reg, val);
 606                         break;
 607                 }
 608         }
 609
 610         return 0;
 611 }
 612 #else
 613 static inline int
 614 ar8327_hw_config_of(struct ar8xxx_priv *priv, struct device_node *np)
 615 {
 616         return -EINVAL;
 617 }
 618 #endif
 619
 620 static int
 621 ar8327_hw_init(struct ar8xxx_priv *priv)
 622 {
 623         int ret;
 624
 625         priv->chip_data = kzalloc(sizeof(struct ar8327_data), GFP_KERNEL);
 626         if (!priv->chip_data)
 627                 return -ENOMEM;
 628
 629         if (priv->phy->dev.of_node)
 630                 ret = ar8327_hw_config_of(priv, priv->phy->dev.of_node);
 631         else
 632                 ret = ar8327_hw_config_pdata(priv,
 633                                              priv->phy->dev.platform_data);
 634
 635         if (ret)
 636                 return ret;
 637
 638         ar8327_leds_init(priv);
 639
 640         ar8xxx_phy_init(priv);
 641
 642         return 0;
 643 }
 644
 645 static void
 646 ar8327_cleanup(struct ar8xxx_priv *priv)
 647 {
 648         ar8327_leds_cleanup(priv);
 649 }
 650
 651 static void
 652 ar8327_init_globals(struct ar8xxx_priv *priv)
 653 {
 654         struct ar8327_data *data = priv->chip_data;
 655         u32 t;
 656         int i;
 657
 658         /* enable CPU port and disable mirror port */
 659         t = AR8327_FWD_CTRL0_CPU_PORT_EN |
 660             AR8327_FWD_CTRL0_MIRROR_PORT;
 661         ar8xxx_write(priv, AR8327_REG_FWD_CTRL0, t);
 662
 663         /* forward multicast and broadcast frames to CPU */
 664         t = (AR8327_PORTS_ALL << AR8327_FWD_CTRL1_UC_FLOOD_S) |
 665             (AR8327_PORTS_ALL << AR8327_FWD_CTRL1_MC_FLOOD_S) |
 666             (AR8327_PORTS_ALL << AR8327_FWD_CTRL1_BC_FLOOD_S);
 667         ar8xxx_write(priv, AR8327_REG_FWD_CTRL1, t);
 668
 669         /* enable jumbo frames */
 670         ar8xxx_rmw(priv, AR8327_REG_MAX_FRAME_SIZE,
 671                    AR8327_MAX_FRAME_SIZE_MTU, 9018 + 8 + 2);
 672
 673         /* Enable MIB counters */
 674         ar8xxx_reg_set(priv, AR8327_REG_MODULE_EN,
 675                        AR8327_MODULE_EN_MIB);
 676
 677         /* Disable EEE on all phy's due to stability issues */
 678         for (i = 0; i < AR8XXX_NUM_PHYS; i++)
 679                 data->eee[i] = false;
 680 }
 681
 682 static void
 683 ar8327_init_port(struct ar8xxx_priv *priv, int port)
 684 {
 685         struct ar8327_data *data = priv->chip_data;
 686         u32 t;
 687
 688         if (port == AR8216_PORT_CPU)
 689                 t = data->port0_status;
 690         else if (port == 6)
 691                 t = data->port6_status;
 692         else
 693                 t = AR8216_PORT_STATUS_LINK_AUTO;
 694
 695         ar8xxx_write(priv, AR8327_REG_PORT_STATUS(port), t);
 696         ar8xxx_write(priv, AR8327_REG_PORT_HEADER(port), 0);
 697
 698         t = 1 << AR8327_PORT_VLAN0_DEF_SVID_S;
 699         t |= 1 << AR8327_PORT_VLAN0_DEF_CVID_S;
 700         ar8xxx_write(priv, AR8327_REG_PORT_VLAN0(port), t);
 701
 702         t = AR8327_PORT_VLAN1_OUT_MODE_UNTOUCH << AR8327_PORT_VLAN1_OUT_MODE_S;
 703         ar8xxx_write(priv, AR8327_REG_PORT_VLAN1(port), t);
 704
 705         t = AR8327_PORT_LOOKUP_LEARN;
 706         t |= AR8216_PORT_STATE_FORWARD << AR8327_PORT_LOOKUP_STATE_S;
 707         ar8xxx_write(priv, AR8327_REG_PORT_LOOKUP(port), t);
 708 }
 709
 710 static u32
 711 ar8327_read_port_status(struct ar8xxx_priv *priv, int port)
 712 {
 713         u32 t;
 714
 715         t = ar8xxx_read(priv, AR8327_REG_PORT_STATUS(port));
 716         /* map the flow control autoneg result bits to the flow control bits
 717          * used in forced mode to allow ar8216_read_port_link detect
 718          * flow control properly if autoneg is used
 719          */
 720         if (t & AR8216_PORT_STATUS_LINK_UP &&
 721             t & AR8216_PORT_STATUS_LINK_AUTO) {
 722                 t &= ~(AR8216_PORT_STATUS_TXFLOW | AR8216_PORT_STATUS_RXFLOW);
 723                 if (t & AR8327_PORT_STATUS_TXFLOW_AUTO)
 724                         t |= AR8216_PORT_STATUS_TXFLOW;
 725                 if (t & AR8327_PORT_STATUS_RXFLOW_AUTO)
 726                         t |= AR8216_PORT_STATUS_RXFLOW;
 727         }
 728
 729         return t;
 730 }
 731
 732 static u32
 733 ar8327_read_port_eee_status(struct ar8xxx_priv *priv, int port)
 734 {
 735         int phy;
 736         u16 t;
 737
 738         if (port >= priv->dev.ports)
 739                 return 0;
 740
 741         if (port == 0 || port == 6)
 742                 return 0;
 743
 744         phy = port - 1;
 745
 746         /* EEE Ability Auto-negotiation Result */
 747         ar8xxx_phy_mmd_write(priv, phy, 0x7, 0x8000);
 748         t = ar8xxx_phy_mmd_read(priv, phy, 0x4007);
 749
 750         return mmd_eee_adv_to_ethtool_adv_t(t);
 751 }
 752
 753 static int
 754 ar8327_atu_flush(struct ar8xxx_priv *priv)
 755 {
 756         int ret;
 757
 758         ret = ar8216_wait_bit(priv, AR8327_REG_ATU_FUNC,
 759                               AR8327_ATU_FUNC_BUSY, 0);
 760         if (!ret)
 761                 ar8xxx_write(priv, AR8327_REG_ATU_FUNC,
 762                             AR8327_ATU_FUNC_OP_FLUSH);
 763
 764         return ret;
 765 }
 766
 767 static void
 768 ar8327_vtu_op(struct ar8xxx_priv *priv, u32 op, u32 val)
 769 {
 770         if (ar8216_wait_bit(priv, AR8327_REG_VTU_FUNC1,
 771                             AR8327_VTU_FUNC1_BUSY, 0))
 772                 return;
 773
 774         if ((op & AR8327_VTU_FUNC1_OP) == AR8327_VTU_FUNC1_OP_LOAD)
 775                 ar8xxx_write(priv, AR8327_REG_VTU_FUNC0, val);
 776
 777         op |= AR8327_VTU_FUNC1_BUSY;
 778         ar8xxx_write(priv, AR8327_REG_VTU_FUNC1, op);
 779 }
 780
 781 static void
 782 ar8327_vtu_flush(struct ar8xxx_priv *priv)
 783 {
 784         ar8327_vtu_op(priv, AR8327_VTU_FUNC1_OP_FLUSH, 0);
 785 }
 786
 787 static void
 788 ar8327_vtu_load_vlan(struct ar8xxx_priv *priv, u32 vid, u32 port_mask)
 789 {
 790         u32 op;
 791         u32 val;
 792         int i;
 793
 794         op = AR8327_VTU_FUNC1_OP_LOAD | (vid << AR8327_VTU_FUNC1_VID_S);
 795         val = AR8327_VTU_FUNC0_VALID | AR8327_VTU_FUNC0_IVL;
 796         for (i = 0; i < AR8327_NUM_PORTS; i++) {
 797                 u32 mode;
 798
 799                 if ((port_mask & BIT(i)) == 0)
 800                         mode = AR8327_VTU_FUNC0_EG_MODE_NOT;
 801                 else if (priv->vlan == 0)
 802                         mode = AR8327_VTU_FUNC0_EG_MODE_KEEP;
 803                 else if ((priv->vlan_tagged & BIT(i)) || (priv->vlan_id[priv->pvid[i]] != vid))
 804                         mode = AR8327_VTU_FUNC0_EG_MODE_TAG;
 805                 else
 806                         mode = AR8327_VTU_FUNC0_EG_MODE_UNTAG;
 807
 808                 val |= mode << AR8327_VTU_FUNC0_EG_MODE_S(i);
 809         }
 810         ar8327_vtu_op(priv, op, val);
 811 }
 812
 813 static void
 814 ar8327_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
 815 {
 816         u32 t;
 817         u32 egress, ingress;
 818         u32 pvid = priv->vlan_id[priv->pvid[port]];
 819
 820         if (priv->vlan) {
 821                 egress = AR8327_PORT_VLAN1_OUT_MODE_UNMOD;
 822                 ingress = AR8216_IN_SECURE;
 823         } else {
 824                 egress = AR8327_PORT_VLAN1_OUT_MODE_UNTOUCH;
 825                 ingress = AR8216_IN_PORT_ONLY;
 826         }
 827
 828         t = pvid << AR8327_PORT_VLAN0_DEF_SVID_S;
 829         t |= pvid << AR8327_PORT_VLAN0_DEF_CVID_S;
 830         ar8xxx_write(priv, AR8327_REG_PORT_VLAN0(port), t);
 831
 832         t = AR8327_PORT_VLAN1_PORT_VLAN_PROP;
 833         t |= egress << AR8327_PORT_VLAN1_OUT_MODE_S;
 834         ar8xxx_write(priv, AR8327_REG_PORT_VLAN1(port), t);
 835
 836         t = members;
 837         t |= AR8327_PORT_LOOKUP_LEARN;
 838         t |= ingress << AR8327_PORT_LOOKUP_IN_MODE_S;
 839         t |= AR8216_PORT_STATE_FORWARD << AR8327_PORT_LOOKUP_STATE_S;
 840         ar8xxx_write(priv, AR8327_REG_PORT_LOOKUP(port), t);
 841 }
 842
 843 static int
 844 ar8327_sw_get_ports(struct switch_dev *dev, struct switch_val *val)
 845 {
 846         struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
 847         u8 ports = priv->vlan_table[val->port_vlan];
 848         int i;
 849
 850         val->len = 0;
 851         for (i = 0; i < dev->ports; i++) {
 852                 struct switch_port *p;
 853
 854                 if (!(ports & (1 << i)))
 855                         continue;
 856
 857                 p = &val->value.ports[val->len++];
 858                 p->id = i;
 859                 if ((priv->vlan_tagged & (1 << i)) || (priv->pvid[i] != val->port_vlan))
 860                         p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
 861                 else
 862                         p->flags = 0;
 863         }
 864         return 0;
 865 }
 866
 867 static int
 868 ar8327_sw_set_ports(struct switch_dev *dev, struct switch_val *val)
 869 {
 870         struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
 871         u8 *vt = &priv->vlan_table[val->port_vlan];
 872         int i;
 873
 874         *vt = 0;
 875         for (i = 0; i < val->len; i++) {
 876                 struct switch_port *p = &val->value.ports[i];
 877
 878                 if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) {
 879                         if (val->port_vlan == priv->pvid[p->id]) {
 880                                 priv->vlan_tagged |= (1 << p->id);
 881                         }
 882                 } else {
 883                         priv->vlan_tagged &= ~(1 << p->id);
 884                         priv->pvid[p->id] = val->port_vlan;
 885                 }
 886
 887                 *vt |= 1 << p->id;
 888         }
 889         return 0;
 890 }
 891
 892 static void
 893 ar8327_set_mirror_regs(struct ar8xxx_priv *priv)
 894 {
 895         int port;
 896
 897         /* reset all mirror registers */
 898         ar8xxx_rmw(priv, AR8327_REG_FWD_CTRL0,
 899                    AR8327_FWD_CTRL0_MIRROR_PORT,
 900                    (0xF << AR8327_FWD_CTRL0_MIRROR_PORT_S));
 901         for (port = 0; port < AR8327_NUM_PORTS; port++) {
 902                 ar8xxx_reg_clear(priv, AR8327_REG_PORT_LOOKUP(port),
 903                            AR8327_PORT_LOOKUP_ING_MIRROR_EN);
 904
 905                 ar8xxx_reg_clear(priv, AR8327_REG_PORT_HOL_CTRL1(port),
 906                            AR8327_PORT_HOL_CTRL1_EG_MIRROR_EN);
 907         }
 908
 909         /* now enable mirroring if necessary */
 910         if (priv->source_port >= AR8327_NUM_PORTS ||
 911             priv->monitor_port >= AR8327_NUM_PORTS ||
 912             priv->source_port == priv->monitor_port) {
 913                 return;
 914         }
 915
 916         ar8xxx_rmw(priv, AR8327_REG_FWD_CTRL0,
 917                    AR8327_FWD_CTRL0_MIRROR_PORT,
 918                    (priv->monitor_port << AR8327_FWD_CTRL0_MIRROR_PORT_S));
 919
 920         if (priv->mirror_rx)
 921                 ar8xxx_reg_set(priv, AR8327_REG_PORT_LOOKUP(priv->source_port),
 922                            AR8327_PORT_LOOKUP_ING_MIRROR_EN);
 923
 924         if (priv->mirror_tx)
 925                 ar8xxx_reg_set(priv, AR8327_REG_PORT_HOL_CTRL1(priv->source_port),
 926                            AR8327_PORT_HOL_CTRL1_EG_MIRROR_EN);
 927 }
 928
 929 static int
 930 ar8327_sw_set_eee(struct switch_dev *dev,
 931                   const struct switch_attr *attr,
 932                   struct switch_val *val)
 933 {
 934         struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
 935         struct ar8327_data *data = priv->chip_data;
 936         int port = val->port_vlan;
 937         int phy;
 938
 939         if (port >= dev->ports)
 940                 return -EINVAL;
 941         if (port == 0 || port == 6)
 942                 return -EOPNOTSUPP;
 943
 944         phy = port - 1;
 945
 946         data->eee[phy] = !!(val->value.i);
 947
 948         return 0;
 949 }
 950
 951 static int
 952 ar8327_sw_get_eee(struct switch_dev *dev,
 953                   const struct switch_attr *attr,
 954                   struct switch_val *val)
 955 {
 956         struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
 957         const struct ar8327_data *data = priv->chip_data;
 958         int port = val->port_vlan;
 959         int phy;
 960
 961         if (port >= dev->ports)
 962                 return -EINVAL;
 963         if (port == 0 || port == 6)
 964                 return -EOPNOTSUPP;
 965
 966         phy = port - 1;
 967
 968         val->value.i = data->eee[phy];
 969
 970         return 0;
 971 }
 972
 973 static int
 974 ar8327_sw_hw_apply(struct switch_dev *dev)
 975 {
 976         struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
 977         const struct ar8327_data *data = priv->chip_data;
 978         int ret, i;
 979
 980         ret = ar8xxx_sw_hw_apply(dev);
 981         if (ret)
 982                 return ret;
 983
 984         for (i=0; i < AR8XXX_NUM_PHYS; i++) {
 985                 if (data->eee[i])
 986                         ar8xxx_reg_clear(priv, AR8327_REG_EEE_CTRL,
 987                                AR8327_EEE_CTRL_DISABLE_PHY(i));
 988                 else
 989                         ar8xxx_reg_set(priv, AR8327_REG_EEE_CTRL,
 990                                AR8327_EEE_CTRL_DISABLE_PHY(i));
 991         }
 992
 993         return 0;
 994 }
 995
 996 static const struct switch_attr ar8327_sw_attr_globals[] = {
 997         {
 998                 .type = SWITCH_TYPE_INT,
 999                 .name = "enable_vlan",
1000                 .description = "Enable VLAN mode",
1001                 .set = ar8xxx_sw_set_vlan,
1002                 .get = ar8xxx_sw_get_vlan,
1003                 .max = 1
1004         },
1005         {
1006                 .type = SWITCH_TYPE_NOVAL,
1007                 .name = "reset_mibs",
1008                 .description = "Reset all MIB counters",
1009                 .set = ar8xxx_sw_set_reset_mibs,
1010         },
1011         {
1012                 .type = SWITCH_TYPE_INT,
1013                 .name = "enable_mirror_rx",
1014                 .description = "Enable mirroring of RX packets",
1015                 .set = ar8xxx_sw_set_mirror_rx_enable,
1016                 .get = ar8xxx_sw_get_mirror_rx_enable,
1017                 .max = 1
1018         },
1019         {
1020                 .type = SWITCH_TYPE_INT,
1021                 .name = "enable_mirror_tx",
1022                 .description = "Enable mirroring of TX packets",
1023                 .set = ar8xxx_sw_set_mirror_tx_enable,
1024                 .get = ar8xxx_sw_get_mirror_tx_enable,
1025                 .max = 1
1026         },
1027         {
1028                 .type = SWITCH_TYPE_INT,
1029                 .name = "mirror_monitor_port",
1030                 .description = "Mirror monitor port",
1031                 .set = ar8xxx_sw_set_mirror_monitor_port,
1032                 .get = ar8xxx_sw_get_mirror_monitor_port,
1033                 .max = AR8327_NUM_PORTS - 1
1034         },
1035         {
1036                 .type = SWITCH_TYPE_INT,
1037                 .name = "mirror_source_port",
1038                 .description = "Mirror source port",
1039                 .set = ar8xxx_sw_set_mirror_source_port,
1040                 .get = ar8xxx_sw_get_mirror_source_port,
1041                 .max = AR8327_NUM_PORTS - 1
1042         },
1043 };
1044
1045 static const struct switch_attr ar8327_sw_attr_port[] = {
1046         {
1047                 .type = SWITCH_TYPE_NOVAL,
1048                 .name = "reset_mib",
1049                 .description = "Reset single port MIB counters",
1050                 .set = ar8xxx_sw_set_port_reset_mib,
1051         },
1052         {
1053                 .type = SWITCH_TYPE_STRING,
1054                 .name = "mib",
1055                 .description = "Get port's MIB counters",
1056                 .set = NULL,
1057                 .get = ar8xxx_sw_get_port_mib,
1058         },
1059         {
1060                 .type = SWITCH_TYPE_INT,
1061                 .name = "enable_eee",
1062                 .description = "Enable EEE PHY sleep mode",
1063                 .set = ar8327_sw_set_eee,
1064                 .get = ar8327_sw_get_eee,
1065                 .max = 1,
1066         },
1067 };
1068
1069 static const struct switch_dev_ops ar8327_sw_ops = {
1070         .attr_global = {
1071                 .attr = ar8327_sw_attr_globals,
1072                 .n_attr = ARRAY_SIZE(ar8327_sw_attr_globals),
1073         },
1074         .attr_port = {
1075                 .attr = ar8327_sw_attr_port,
1076                 .n_attr = ARRAY_SIZE(ar8327_sw_attr_port),
1077         },
1078         .attr_vlan = {
1079                 .attr = ar8xxx_sw_attr_vlan,
1080                 .n_attr = ARRAY_SIZE(ar8xxx_sw_attr_vlan),
1081         },
1082         .get_port_pvid = ar8xxx_sw_get_pvid,
1083         .set_port_pvid = ar8xxx_sw_set_pvid,
1084         .get_vlan_ports = ar8327_sw_get_ports,
1085         .set_vlan_ports = ar8327_sw_set_ports,
1086         .apply_config = ar8327_sw_hw_apply,
1087         .reset_switch = ar8xxx_sw_reset_switch,
1088         .get_port_link = ar8xxx_sw_get_port_link,
1089 };
1090
1091 const struct ar8xxx_chip ar8327_chip = {
1092         .caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS,
1093         .config_at_probe = true,
1094         .mii_lo_first = true,
1095
1096         .name = "Atheros AR8327",
1097         .ports = AR8327_NUM_PORTS,
1098         .vlans = AR8X16_MAX_VLANS,
1099         .swops = &ar8327_sw_ops,
1100
1101         .reg_port_stats_start = 0x1000,
1102         .reg_port_stats_length = 0x100,
1103
1104         .hw_init = ar8327_hw_init,
1105         .cleanup = ar8327_cleanup,
1106         .init_globals = ar8327_init_globals,
1107         .init_port = ar8327_init_port,
1108         .setup_port = ar8327_setup_port,
1109         .read_port_status = ar8327_read_port_status,
1110         .read_port_eee_status = ar8327_read_port_eee_status,
1111         .atu_flush = ar8327_atu_flush,
1112         .vtu_flush = ar8327_vtu_flush,
1113         .vtu_load_vlan = ar8327_vtu_load_vlan,
1114         .phy_fixup = ar8327_phy_fixup,
1115         .set_mirror_regs = ar8327_set_mirror_regs,
1116         .sw_hw_apply = ar8327_sw_hw_apply,
1117
1118         .num_mibs = ARRAY_SIZE(ar8236_mibs),
1119         .mib_decs = ar8236_mibs,
1120         .mib_func = AR8327_REG_MIB_FUNC
1121 };
1122
1123 const struct ar8xxx_chip ar8337_chip = {
1124         .caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS,
1125         .config_at_probe = true,
1126         .mii_lo_first = true,
1127
1128         .name = "Atheros AR8337",
1129         .ports = AR8327_NUM_PORTS,
1130         .vlans = AR8X16_MAX_VLANS,
1131         .swops = &ar8327_sw_ops,
1132
1133         .reg_port_stats_start = 0x1000,
1134         .reg_port_stats_length = 0x100,
1135
1136         .hw_init = ar8327_hw_init,
1137         .cleanup = ar8327_cleanup,
1138         .init_globals = ar8327_init_globals,
1139         .init_port = ar8327_init_port,
1140         .setup_port = ar8327_setup_port,
1141         .read_port_status = ar8327_read_port_status,
1142         .read_port_eee_status = ar8327_read_port_eee_status,
1143         .atu_flush = ar8327_atu_flush,
1144         .vtu_flush = ar8327_vtu_flush,
1145         .vtu_load_vlan = ar8327_vtu_load_vlan,
1146         .phy_fixup = ar8327_phy_fixup,
1147         .set_mirror_regs = ar8327_set_mirror_regs,
1148         .sw_hw_apply = ar8327_sw_hw_apply,
1149
1150         .num_mibs = ARRAY_SIZE(ar8236_mibs),
1151         .mib_decs = ar8236_mibs,
1152         .mib_func = AR8327_REG_MIB_FUNC
1153 };
1154