LXR linux/drivers/net/ethernet/atheros/atl1c/atl1c

   1/*
   2 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
   3 *
   4 * Derived from Intel e1000 driver
   5 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   6 *
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms of the GNU General Public License as published by the Free
   9 * Software Foundation; either version 2 of the License, or (at your option)
  10 * any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful, but WITHOUT
  13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15 * more details.
  16 *
  17 * You should have received a copy of the GNU General Public License along with
  18 * this program; if not, write to the Free Software Foundation, Inc., 59
  19 * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 */
  21#include <linux/pci.h>
  22#include <linux/delay.h>
  23#include <linux/mii.h>
  24#include <linux/crc32.h>
  25
  26#include "atl1c.h"
  27
  28/*
  29 * check_eeprom_exist
  30 * return 1 if eeprom exist
  31 */
  32int atl1c_check_eeprom_exist(struct atl1c_hw *hw)
  33{
  34        u32 data;
  35
  36        AT_READ_REG(hw, REG_TWSI_DEBUG, &data);
  37        if (data & TWSI_DEBUG_DEV_EXIST)
  38                return 1;
  39
  40        AT_READ_REG(hw, REG_MASTER_CTRL, &data);
  41        if (data & MASTER_CTRL_OTP_SEL)
  42                return 1;
  43        return 0;
  44}
  45
  46void atl1c_hw_set_mac_addr(struct atl1c_hw *hw, u8 *mac_addr)
  47{
  48        u32 value;
  49        /*
  50         * 00-0B-6A-F6-00-DC
  51         * 0:  6AF600DC 1: 000B
  52         * low dword
  53         */
  54        value = mac_addr[2] << 24 |
  55                mac_addr[3] << 16 |
  56                mac_addr[4] << 8  |
  57                mac_addr[5];
  58        AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 0, value);
  59        /* hight dword */
  60        value = mac_addr[0] << 8 |
  61                mac_addr[1];
  62        AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 1, value);
  63}
  64
  65/* read mac address from hardware register */
  66static bool atl1c_read_current_addr(struct atl1c_hw *hw, u8 *eth_addr)
  67{
  68        u32 addr[2];
  69
  70        AT_READ_REG(hw, REG_MAC_STA_ADDR, &addr[0]);
  71        AT_READ_REG(hw, REG_MAC_STA_ADDR + 4, &addr[1]);
  72
  73        *(u32 *) &eth_addr[2] = htonl(addr[0]);
  74        *(u16 *) &eth_addr[0] = htons((u16)addr[1]);
  75
  76        return is_valid_ether_addr(eth_addr);
  77}
  78
  79/*
  80 * atl1c_get_permanent_address
  81 * return 0 if get valid mac address,
  82 */
  83static int atl1c_get_permanent_address(struct atl1c_hw *hw)
  84{
  85        u32 i;
  86        u32 otp_ctrl_data;
  87        u32 twsi_ctrl_data;
  88        u16 phy_data;
  89        bool raise_vol = false;
  90
  91        /* MAC-address from BIOS is the 1st priority */
  92        if (atl1c_read_current_addr(hw, hw->perm_mac_addr))
  93                return 0;
  94
  95        /* init */
  96        AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
  97        if (atl1c_check_eeprom_exist(hw)) {
  98                if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) {
  99                        /* Enable OTP CLK */
 100                        if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) {
 101                                otp_ctrl_data |= OTP_CTRL_CLK_EN;
 102                                AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
 103                                AT_WRITE_FLUSH(hw);
 104                                msleep(1);
 105                        }
 106                }
 107                /* raise voltage temporally for l2cb */
 108                if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
 109                        atl1c_read_phy_dbg(hw, MIIDBG_ANACTRL, &phy_data);
 110                        phy_data &= ~ANACTRL_HB_EN;
 111                        atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, phy_data);
 112                        atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
 113                        phy_data |= VOLT_CTRL_SWLOWEST;
 114                        atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
 115                        udelay(20);
 116                        raise_vol = true;
 117                }
 118
 119                AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data);
 120                twsi_ctrl_data |= TWSI_CTRL_SW_LDSTART;
 121                AT_WRITE_REG(hw, REG_TWSI_CTRL, twsi_ctrl_data);
 122                for (i = 0; i < AT_TWSI_EEPROM_TIMEOUT; i++) {
 123                        msleep(10);
 124                        AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data);
 125                        if ((twsi_ctrl_data & TWSI_CTRL_SW_LDSTART) == 0)
 126                                break;
 127                }
 128                if (i >= AT_TWSI_EEPROM_TIMEOUT)
 129                        return -1;
 130        }
 131        /* Disable OTP_CLK */
 132        if ((hw->nic_type == athr_l1c || hw->nic_type == athr_l2c)) {
 133                otp_ctrl_data &= ~OTP_CTRL_CLK_EN;
 134                AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
 135                msleep(1);
 136        }
 137        if (raise_vol) {
 138                atl1c_read_phy_dbg(hw, MIIDBG_ANACTRL, &phy_data);
 139                phy_data |= ANACTRL_HB_EN;
 140                atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, phy_data);
 141                atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
 142                phy_data &= ~VOLT_CTRL_SWLOWEST;
 143                atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
 144                udelay(20);
 145        }
 146
 147        if (atl1c_read_current_addr(hw, hw->perm_mac_addr))
 148                return 0;
 149
 150        return -1;
 151}
 152
 153bool atl1c_read_eeprom(struct atl1c_hw *hw, u32 offset, u32 *p_value)
 154{
 155        int i;
 156        bool ret = false;
 157        u32 otp_ctrl_data;
 158        u32 control;
 159        u32 data;
 160
 161        if (offset & 3)
 162                return ret; /* address do not align */
 163
 164        AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
 165        if (!(otp_ctrl_data & OTP_CTRL_CLK_EN))
 166                AT_WRITE_REG(hw, REG_OTP_CTRL,
 167                                (otp_ctrl_data | OTP_CTRL_CLK_EN));
 168
 169        AT_WRITE_REG(hw, REG_EEPROM_DATA_LO, 0);
 170        control = (offset & EEPROM_CTRL_ADDR_MASK) << EEPROM_CTRL_ADDR_SHIFT;
 171        AT_WRITE_REG(hw, REG_EEPROM_CTRL, control);
 172
 173        for (i = 0; i < 10; i++) {
 174                udelay(100);
 175                AT_READ_REG(hw, REG_EEPROM_CTRL, &control);
 176                if (control & EEPROM_CTRL_RW)
 177                        break;
 178        }
 179        if (control & EEPROM_CTRL_RW) {
 180                AT_READ_REG(hw, REG_EEPROM_CTRL, &data);
 181                AT_READ_REG(hw, REG_EEPROM_DATA_LO, p_value);
 182                data = data & 0xFFFF;
 183                *p_value = swab32((data << 16) | (*p_value >> 16));
 184                ret = true;
 185        }
 186        if (!(otp_ctrl_data & OTP_CTRL_CLK_EN))
 187                AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
 188
 189        return ret;
 190}
 191/*
 192 * Reads the adapter's MAC address from the EEPROM
 193 *
 194 * hw - Struct containing variables accessed by shared code
 195 */
 196int atl1c_read_mac_addr(struct atl1c_hw *hw)
 197{
 198        int err = 0;
 199
 200        err = atl1c_get_permanent_address(hw);
 201        if (err)
 202                eth_random_addr(hw->perm_mac_addr);
 203
 204        memcpy(hw->mac_addr, hw->perm_mac_addr, sizeof(hw->perm_mac_addr));
 205        return err;
 206}
 207
 208/*
 209 * atl1c_hash_mc_addr
 210 *  purpose
 211 *      set hash value for a multicast address
 212 *      hash calcu processing :
 213 *          1. calcu 32bit CRC for multicast address
 214 *          2. reverse crc with MSB to LSB
 215 */
 216u32 atl1c_hash_mc_addr(struct atl1c_hw *hw, u8 *mc_addr)
 217{
 218        u32 crc32;
 219        u32 value = 0;
 220        int i;
 221
 222        crc32 = ether_crc_le(6, mc_addr);
 223        for (i = 0; i < 32; i++)
 224                value |= (((crc32 >> i) & 1) << (31 - i));
 225
 226        return value;
 227}
 228
 229/*
 230 * Sets the bit in the multicast table corresponding to the hash value.
 231 * hw - Struct containing variables accessed by shared code
 232 * hash_value - Multicast address hash value
 233 */
 234void atl1c_hash_set(struct atl1c_hw *hw, u32 hash_value)
 235{
 236        u32 hash_bit, hash_reg;
 237        u32 mta;
 238
 239        /*
 240         * The HASH Table  is a register array of 2 32-bit registers.
 241         * It is treated like an array of 64 bits.  We want to set
 242         * bit BitArray[hash_value]. So we figure out what register
 243         * the bit is in, read it, OR in the new bit, then write
 244         * back the new value.  The register is determined by the
 245         * upper bit of the hash value and the bit within that
 246         * register are determined by the lower 5 bits of the value.
 247         */
 248        hash_reg = (hash_value >> 31) & 0x1;
 249        hash_bit = (hash_value >> 26) & 0x1F;
 250
 251        mta = AT_READ_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg);
 252
 253        mta |= (1 << hash_bit);
 254
 255        AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg, mta);
 256}
 257
 258/*
 259 * wait mdio module be idle
 260 * return true: idle
 261 *        false: still busy
 262 */
 263bool atl1c_wait_mdio_idle(struct atl1c_hw *hw)
 264{
 265        u32 val;
 266        int i;
 267
 268        for (i = 0; i < MDIO_MAX_AC_TO; i++) {
 269                AT_READ_REG(hw, REG_MDIO_CTRL, &val);
 270                if (!(val & (MDIO_CTRL_BUSY | MDIO_CTRL_START)))
 271                        break;
 272                udelay(10);
 273        }
 274
 275        return i != MDIO_MAX_AC_TO;
 276}
 277
 278void atl1c_stop_phy_polling(struct atl1c_hw *hw)
 279{
 280        if (!(hw->ctrl_flags & ATL1C_FPGA_VERSION))
 281                return;
 282
 283        AT_WRITE_REG(hw, REG_MDIO_CTRL, 0);
 284        atl1c_wait_mdio_idle(hw);
 285}
 286
 287void atl1c_start_phy_polling(struct atl1c_hw *hw, u16 clk_sel)
 288{
 289        u32 val;
 290
 291        if (!(hw->ctrl_flags & ATL1C_FPGA_VERSION))
 292                return;
 293
 294        val = MDIO_CTRL_SPRES_PRMBL |
 295                FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 296                FIELDX(MDIO_CTRL_REG, 1) |
 297                MDIO_CTRL_START |
 298                MDIO_CTRL_OP_READ;
 299        AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 300        atl1c_wait_mdio_idle(hw);
 301        val |= MDIO_CTRL_AP_EN;
 302        val &= ~MDIO_CTRL_START;
 303        AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 304        udelay(30);
 305}
 306
 307
 308/*
 309 * atl1c_read_phy_core
 310 * core funtion to read register in PHY via MDIO control regsiter.
 311 * ext: extension register (see IEEE 802.3)
 312 * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
 313 * reg: reg to read
 314 */
 315int atl1c_read_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
 316                        u16 reg, u16 *phy_data)
 317{
 318        u32 val;
 319        u16 clk_sel = MDIO_CTRL_CLK_25_4;
 320
 321        atl1c_stop_phy_polling(hw);
 322
 323        *phy_data = 0;
 324
 325        /* only l2c_b2 & l1d_2 could use slow clock */
 326        if ((hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) &&
 327                hw->hibernate)
 328                clk_sel = MDIO_CTRL_CLK_25_128;
 329        if (ext) {
 330                val = FIELDX(MDIO_EXTN_DEVAD, dev) | FIELDX(MDIO_EXTN_REG, reg);
 331                AT_WRITE_REG(hw, REG_MDIO_EXTN, val);
 332                val = MDIO_CTRL_SPRES_PRMBL |
 333                        FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 334                        MDIO_CTRL_START |
 335                        MDIO_CTRL_MODE_EXT |
 336                        MDIO_CTRL_OP_READ;
 337        } else {
 338                val = MDIO_CTRL_SPRES_PRMBL |
 339                        FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 340                        FIELDX(MDIO_CTRL_REG, reg) |
 341                        MDIO_CTRL_START |
 342                        MDIO_CTRL_OP_READ;
 343        }
 344        AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 345
 346        if (!atl1c_wait_mdio_idle(hw))
 347                return -1;
 348
 349        AT_READ_REG(hw, REG_MDIO_CTRL, &val);
 350        *phy_data = (u16)FIELD_GETX(val, MDIO_CTRL_DATA);
 351
 352        atl1c_start_phy_polling(hw, clk_sel);
 353
 354        return 0;
 355}
 356
 357/*
 358 * atl1c_write_phy_core
 359 * core funtion to write to register in PHY via MDIO control regsiter.
 360 * ext: extension register (see IEEE 802.3)
 361 * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
 362 * reg: reg to write
 363 */
 364int atl1c_write_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
 365                        u16 reg, u16 phy_data)
 366{
 367        u32 val;
 368        u16 clk_sel = MDIO_CTRL_CLK_25_4;
 369
 370        atl1c_stop_phy_polling(hw);
 371
 372
 373        /* only l2c_b2 & l1d_2 could use slow clock */
 374        if ((hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) &&
 375                hw->hibernate)
 376                clk_sel = MDIO_CTRL_CLK_25_128;
 377
 378        if (ext) {
 379                val = FIELDX(MDIO_EXTN_DEVAD, dev) | FIELDX(MDIO_EXTN_REG, reg);
 380                AT_WRITE_REG(hw, REG_MDIO_EXTN, val);
 381                val = MDIO_CTRL_SPRES_PRMBL |
 382                        FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 383                        FIELDX(MDIO_CTRL_DATA, phy_data) |
 384                        MDIO_CTRL_START |
 385                        MDIO_CTRL_MODE_EXT;
 386        } else {
 387                val = MDIO_CTRL_SPRES_PRMBL |
 388                        FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 389                        FIELDX(MDIO_CTRL_DATA, phy_data) |
 390                        FIELDX(MDIO_CTRL_REG, reg) |
 391                        MDIO_CTRL_START;
 392        }
 393        AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 394
 395        if (!atl1c_wait_mdio_idle(hw))
 396                return -1;
 397
 398        atl1c_start_phy_polling(hw, clk_sel);
 399
 400        return 0;
 401}
 402
 403/*
 404 * Reads the value from a PHY register
 405 * hw - Struct containing variables accessed by shared code
 406 * reg_addr - address of the PHY register to read
 407 */
 408int atl1c_read_phy_reg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
 409{
 410        return atl1c_read_phy_core(hw, false, 0, reg_addr, phy_data);
 411}
 412
 413/*
 414 * Writes a value to a PHY register
 415 * hw - Struct containing variables accessed by shared code
 416 * reg_addr - address of the PHY register to write
 417 * data - data to write to the PHY
 418 */
 419int atl1c_write_phy_reg(struct atl1c_hw *hw, u32 reg_addr, u16 phy_data)
 420{
 421        return atl1c_write_phy_core(hw, false, 0, reg_addr, phy_data);
 422}
 423
 424/* read from PHY extension register */
 425int atl1c_read_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
 426                        u16 reg_addr, u16 *phy_data)
 427{
 428        return atl1c_read_phy_core(hw, true, dev_addr, reg_addr, phy_data);
 429}
 430
 431/* write to PHY extension register */
 432int atl1c_write_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
 433                        u16 reg_addr, u16 phy_data)
 434{
 435        return atl1c_write_phy_core(hw, true, dev_addr, reg_addr, phy_data);
 436}
 437
 438int atl1c_read_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
 439{
 440        int err;
 441
 442        err = atl1c_write_phy_reg(hw, MII_DBG_ADDR, reg_addr);
 443        if (unlikely(err))
 444                return err;
 445        else
 446                err = atl1c_read_phy_reg(hw, MII_DBG_DATA, phy_data);
 447
 448        return err;
 449}
 450
 451int atl1c_write_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 phy_data)
 452{
 453        int err;
 454
 455        err = atl1c_write_phy_reg(hw, MII_DBG_ADDR, reg_addr);
 456        if (unlikely(err))
 457                return err;
 458        else
 459                err = atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data);
 460
 461        return err;
 462}
 463
 464/*
 465 * Configures PHY autoneg and flow control advertisement settings
 466 *
 467 * hw - Struct containing variables accessed by shared code
 468 */
 469static int atl1c_phy_setup_adv(struct atl1c_hw *hw)
 470{
 471        u16 mii_adv_data = ADVERTISE_DEFAULT_CAP & ~ADVERTISE_ALL;
 472        u16 mii_giga_ctrl_data = GIGA_CR_1000T_DEFAULT_CAP &
 473                                ~GIGA_CR_1000T_SPEED_MASK;
 474
 475        if (hw->autoneg_advertised & ADVERTISED_10baseT_Half)
 476                mii_adv_data |= ADVERTISE_10HALF;
 477        if (hw->autoneg_advertised & ADVERTISED_10baseT_Full)
 478                mii_adv_data |= ADVERTISE_10FULL;
 479        if (hw->autoneg_advertised & ADVERTISED_100baseT_Half)
 480                mii_adv_data |= ADVERTISE_100HALF;
 481        if (hw->autoneg_advertised & ADVERTISED_100baseT_Full)
 482                mii_adv_data |= ADVERTISE_100FULL;
 483
 484        if (hw->autoneg_advertised & ADVERTISED_Autoneg)
 485                mii_adv_data |= ADVERTISE_10HALF  | ADVERTISE_10FULL |
 486                                ADVERTISE_100HALF | ADVERTISE_100FULL;
 487
 488        if (hw->link_cap_flags & ATL1C_LINK_CAP_1000M) {
 489                if (hw->autoneg_advertised & ADVERTISED_1000baseT_Half)
 490                        mii_giga_ctrl_data |= ADVERTISE_1000HALF;
 491                if (hw->autoneg_advertised & ADVERTISED_1000baseT_Full)
 492                        mii_giga_ctrl_data |= ADVERTISE_1000FULL;
 493                if (hw->autoneg_advertised & ADVERTISED_Autoneg)
 494                        mii_giga_ctrl_data |= ADVERTISE_1000HALF |
 495                                        ADVERTISE_1000FULL;
 496        }
 497
 498        if (atl1c_write_phy_reg(hw, MII_ADVERTISE, mii_adv_data) != 0 ||
 499            atl1c_write_phy_reg(hw, MII_CTRL1000, mii_giga_ctrl_data) != 0)
 500                return -1;
 501        return 0;
 502}
 503
 504void atl1c_phy_disable(struct atl1c_hw *hw)
 505{
 506        atl1c_power_saving(hw, 0);
 507}
 508
 509
 510int atl1c_phy_reset(struct atl1c_hw *hw)
 511{
 512        struct atl1c_adapter *adapter = hw->adapter;
 513        struct pci_dev *pdev = adapter->pdev;
 514        u16 phy_data;
 515        u32 phy_ctrl_data, lpi_ctrl;
 516        int err;
 517
 518        /* reset PHY core */
 519        AT_READ_REG(hw, REG_GPHY_CTRL, &phy_ctrl_data);
 520        phy_ctrl_data &= ~(GPHY_CTRL_EXT_RESET | GPHY_CTRL_PHY_IDDQ |
 521                GPHY_CTRL_GATE_25M_EN | GPHY_CTRL_PWDOWN_HW | GPHY_CTRL_CLS);
 522        phy_ctrl_data |= GPHY_CTRL_SEL_ANA_RST;
 523        if (!(hw->ctrl_flags & ATL1C_HIB_DISABLE))
 524                phy_ctrl_data |= (GPHY_CTRL_HIB_EN | GPHY_CTRL_HIB_PULSE);
 525        else
 526                phy_ctrl_data &= ~(GPHY_CTRL_HIB_EN | GPHY_CTRL_HIB_PULSE);
 527        AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data);
 528        AT_WRITE_FLUSH(hw);
 529        udelay(10);
 530        AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data | GPHY_CTRL_EXT_RESET);
 531        AT_WRITE_FLUSH(hw);
 532        udelay(10 * GPHY_CTRL_EXT_RST_TO);      /* delay 800us */
 533
 534        /* switch clock */
 535        if (hw->nic_type == athr_l2c_b) {
 536                atl1c_read_phy_dbg(hw, MIIDBG_CFGLPSPD, &phy_data);
 537                atl1c_write_phy_dbg(hw, MIIDBG_CFGLPSPD,
 538                        phy_data & ~CFGLPSPD_RSTCNT_CLK125SW);
 539        }
 540
 541        /* tx-half amplitude issue fix */
 542        if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
 543                atl1c_read_phy_dbg(hw, MIIDBG_CABLE1TH_DET, &phy_data);
 544                phy_data |= CABLE1TH_DET_EN;
 545                atl1c_write_phy_dbg(hw, MIIDBG_CABLE1TH_DET, phy_data);
 546        }
 547
 548        /* clear bit3 of dbgport 3B to lower voltage */
 549        if (!(hw->ctrl_flags & ATL1C_HIB_DISABLE)) {
 550                if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
 551                        atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
 552                        phy_data &= ~VOLT_CTRL_SWLOWEST;
 553                        atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
 554                }
 555                /* power saving config */
 556                phy_data =
 557                        hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2 ?
 558                        L1D_LEGCYPS_DEF : L1C_LEGCYPS_DEF;
 559                atl1c_write_phy_dbg(hw, MIIDBG_LEGCYPS, phy_data);
 560                /* hib */
 561                atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
 562                        SYSMODCTRL_IECHOADJ_DEF);
 563        } else {
 564                /* disable pws */
 565                atl1c_read_phy_dbg(hw, MIIDBG_LEGCYPS, &phy_data);
 566                atl1c_write_phy_dbg(hw, MIIDBG_LEGCYPS,
 567                        phy_data & ~LEGCYPS_EN);
 568                /* disable hibernate */
 569                atl1c_read_phy_dbg(hw, MIIDBG_HIBNEG, &phy_data);
 570                atl1c_write_phy_dbg(hw, MIIDBG_HIBNEG,
 571                        phy_data & HIBNEG_PSHIB_EN);
 572        }
 573        /* disable AZ(EEE) by default */
 574        if (hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2 ||
 575            hw->nic_type == athr_l2c_b2) {
 576                AT_READ_REG(hw, REG_LPI_CTRL, &lpi_ctrl);
 577                AT_WRITE_REG(hw, REG_LPI_CTRL, lpi_ctrl & ~LPI_CTRL_EN);
 578                atl1c_write_phy_ext(hw, MIIEXT_ANEG, MIIEXT_LOCAL_EEEADV, 0);
 579                atl1c_write_phy_ext(hw, MIIEXT_PCS, MIIEXT_CLDCTRL3,
 580                        L2CB_CLDCTRL3);
 581        }
 582
 583        /* other debug port to set */
 584        atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, ANACTRL_DEF);
 585        atl1c_write_phy_dbg(hw, MIIDBG_SRDSYSMOD, SRDSYSMOD_DEF);
 586        atl1c_write_phy_dbg(hw, MIIDBG_TST10BTCFG, TST10BTCFG_DEF);
 587        /* UNH-IOL test issue, set bit7 */
 588        atl1c_write_phy_dbg(hw, MIIDBG_TST100BTCFG,
 589                TST100BTCFG_DEF | TST100BTCFG_LITCH_EN);
 590
 591        /* set phy interrupt mask */
 592        phy_data = IER_LINK_UP | IER_LINK_DOWN;
 593        err = atl1c_write_phy_reg(hw, MII_IER, phy_data);
 594        if (err) {
 595                if (netif_msg_hw(adapter))
 596                        dev_err(&pdev->dev,
 597                                "Error enable PHY linkChange Interrupt\n");
 598                return err;
 599        }
 600        return 0;
 601}
 602
 603int atl1c_phy_init(struct atl1c_hw *hw)
 604{
 605        struct atl1c_adapter *adapter = hw->adapter;
 606        struct pci_dev *pdev = adapter->pdev;
 607        int ret_val;
 608        u16 mii_bmcr_data = BMCR_RESET;
 609
 610        if ((atl1c_read_phy_reg(hw, MII_PHYSID1, &hw->phy_id1) != 0) ||
 611                (atl1c_read_phy_reg(hw, MII_PHYSID2, &hw->phy_id2) != 0)) {
 612                dev_err(&pdev->dev, "Error get phy ID\n");
 613                return -1;
 614        }
 615        switch (hw->media_type) {
 616        case MEDIA_TYPE_AUTO_SENSOR:
 617                ret_val = atl1c_phy_setup_adv(hw);
 618                if (ret_val) {
 619                        if (netif_msg_link(adapter))
 620                                dev_err(&pdev->dev,
 621                                        "Error Setting up Auto-Negotiation\n");
 622                        return ret_val;
 623                }
 624                mii_bmcr_data |= BMCR_ANENABLE | BMCR_ANRESTART;
 625                break;
 626        case MEDIA_TYPE_100M_FULL:
 627                mii_bmcr_data |= BMCR_SPEED100 | BMCR_FULLDPLX;
 628                break;
 629        case MEDIA_TYPE_100M_HALF:
 630                mii_bmcr_data |= BMCR_SPEED100;
 631                break;
 632        case MEDIA_TYPE_10M_FULL:
 633                mii_bmcr_data |= BMCR_FULLDPLX;
 634                break;
 635        case MEDIA_TYPE_10M_HALF:
 636                break;
 637        default:
 638                if (netif_msg_link(adapter))
 639                        dev_err(&pdev->dev, "Wrong Media type %d\n",
 640                                hw->media_type);
 641                return -1;
 642                break;
 643        }
 644
 645        ret_val = atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data);
 646        if (ret_val)
 647                return ret_val;
 648        hw->phy_configured = true;
 649
 650        return 0;
 651}
 652
 653/*
 654 * Detects the current speed and duplex settings of the hardware.
 655 *
 656 * hw - Struct containing variables accessed by shared code
 657 * speed - Speed of the connection
 658 * duplex - Duplex setting of the connection
 659 */
 660int atl1c_get_speed_and_duplex(struct atl1c_hw *hw, u16 *speed, u16 *duplex)
 661{
 662        int err;
 663        u16 phy_data;
 664
 665        /* Read   PHY Specific Status Register (17) */
 666        err = atl1c_read_phy_reg(hw, MII_GIGA_PSSR, &phy_data);
 667        if (err)
 668                return err;
 669
 670        if (!(phy_data & GIGA_PSSR_SPD_DPLX_RESOLVED))
 671                return -1;
 672
 673        switch (phy_data & GIGA_PSSR_SPEED) {
 674        case GIGA_PSSR_1000MBS:
 675                *speed = SPEED_1000;
 676                break;
 677        case GIGA_PSSR_100MBS:
 678                *speed = SPEED_100;
 679                break;
 680        case  GIGA_PSSR_10MBS:
 681                *speed = SPEED_10;
 682                break;
 683        default:
 684                return -1;
 685                break;
 686        }
 687
 688        if (phy_data & GIGA_PSSR_DPLX)
 689                *duplex = FULL_DUPLEX;
 690        else
 691                *duplex = HALF_DUPLEX;
 692
 693        return 0;
 694}
 695
 696/* select one link mode to get lower power consumption */
 697int atl1c_phy_to_ps_link(struct atl1c_hw *hw)
 698{
 699        struct atl1c_adapter *adapter = hw->adapter;
 700        struct pci_dev *pdev = adapter->pdev;
 701        int ret = 0;
 702        u16 autoneg_advertised = ADVERTISED_10baseT_Half;
 703        u16 save_autoneg_advertised;
 704        u16 phy_data;
 705        u16 mii_lpa_data;
 706        u16 speed = SPEED_0;
 707        u16 duplex = FULL_DUPLEX;
 708        int i;
 709
 710        atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 711        atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 712        if (phy_data & BMSR_LSTATUS) {
 713                atl1c_read_phy_reg(hw, MII_LPA, &mii_lpa_data);
 714                if (mii_lpa_data & LPA_10FULL)
 715                        autoneg_advertised = ADVERTISED_10baseT_Full;
 716                else if (mii_lpa_data & LPA_10HALF)
 717                        autoneg_advertised = ADVERTISED_10baseT_Half;
 718                else if (mii_lpa_data & LPA_100HALF)
 719                        autoneg_advertised = ADVERTISED_100baseT_Half;
 720                else if (mii_lpa_data & LPA_100FULL)
 721                        autoneg_advertised = ADVERTISED_100baseT_Full;
 722
 723                save_autoneg_advertised = hw->autoneg_advertised;
 724                hw->phy_configured = false;
 725                hw->autoneg_advertised = autoneg_advertised;
 726                if (atl1c_restart_autoneg(hw) != 0) {
 727                        dev_dbg(&pdev->dev, "phy autoneg failed\n");
 728                        ret = -1;
 729                }
 730                hw->autoneg_advertised = save_autoneg_advertised;
 731
 732                if (mii_lpa_data) {
 733                        for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) {
 734                                mdelay(100);
 735                                atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 736                                atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 737                                if (phy_data & BMSR_LSTATUS) {
 738                                        if (atl1c_get_speed_and_duplex(hw, &speed,
 739                                                                        &duplex) != 0)
 740                                                dev_dbg(&pdev->dev,
 741                                                        "get speed and duplex failed\n");
 742                                        break;
 743                                }
 744                        }
 745                }
 746        } else {
 747                speed = SPEED_10;
 748                duplex = HALF_DUPLEX;
 749        }
 750        adapter->link_speed = speed;
 751        adapter->link_duplex = duplex;
 752
 753        return ret;
 754}
 755
 756int atl1c_restart_autoneg(struct atl1c_hw *hw)
 757{
 758        int err = 0;
 759        u16 mii_bmcr_data = BMCR_RESET;
 760
 761        err = atl1c_phy_setup_adv(hw);
 762        if (err)
 763                return err;
 764        mii_bmcr_data |= BMCR_ANENABLE | BMCR_ANRESTART;
 765
 766        return atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data);
 767}
 768
 769int atl1c_power_saving(struct atl1c_hw *hw, u32 wufc)
 770{
 771        struct atl1c_adapter *adapter = hw->adapter;
 772        struct pci_dev *pdev = adapter->pdev;
 773        u32 master_ctrl, mac_ctrl, phy_ctrl;
 774        u32 wol_ctrl, speed;
 775        u16 phy_data;
 776
 777        wol_ctrl = 0;
 778        speed = adapter->link_speed == SPEED_1000 ?
 779                MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100;
 780
 781        AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl);
 782        AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl);
 783        AT_READ_REG(hw, REG_GPHY_CTRL, &phy_ctrl);
 784
 785        master_ctrl &= ~MASTER_CTRL_CLK_SEL_DIS;
 786        mac_ctrl = FIELD_SETX(mac_ctrl, MAC_CTRL_SPEED, speed);
 787        mac_ctrl &= ~(MAC_CTRL_DUPLX | MAC_CTRL_RX_EN | MAC_CTRL_TX_EN);
 788        if (adapter->link_duplex == FULL_DUPLEX)
 789                mac_ctrl |= MAC_CTRL_DUPLX;
 790        phy_ctrl &= ~(GPHY_CTRL_EXT_RESET | GPHY_CTRL_CLS);
 791        phy_ctrl |= GPHY_CTRL_SEL_ANA_RST | GPHY_CTRL_HIB_PULSE |
 792                GPHY_CTRL_HIB_EN;
 793        if (!wufc) { /* without WoL */
 794                master_ctrl |= MASTER_CTRL_CLK_SEL_DIS;
 795                phy_ctrl |= GPHY_CTRL_PHY_IDDQ | GPHY_CTRL_PWDOWN_HW;
 796                AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl);
 797                AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl);
 798                AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl);
 799                AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
 800                hw->phy_configured = false; /* re-init PHY when resume */
 801                return 0;
 802        }
 803        phy_ctrl |= GPHY_CTRL_EXT_RESET;
 804        if (wufc & AT_WUFC_MAG) {
 805                mac_ctrl |= MAC_CTRL_RX_EN | MAC_CTRL_BC_EN;
 806                wol_ctrl |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
 807                if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V11)
 808                        wol_ctrl |= WOL_PATTERN_EN | WOL_PATTERN_PME_EN;
 809        }
 810        if (wufc & AT_WUFC_LNKC) {
 811                wol_ctrl |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN;
 812                if (atl1c_write_phy_reg(hw, MII_IER, IER_LINK_UP) != 0) {
 813                        dev_dbg(&pdev->dev, "%s: write phy MII_IER failed.\n",
 814                                atl1c_driver_name);
 815                }
 816        }
 817        /* clear PHY interrupt */
 818        atl1c_read_phy_reg(hw, MII_ISR, &phy_data);
 819
 820        dev_dbg(&pdev->dev, "%s: suspend MAC=%x,MASTER=%x,PHY=0x%x,WOL=%x\n",
 821                atl1c_driver_name, mac_ctrl, master_ctrl, phy_ctrl, wol_ctrl);
 822        AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl);
 823        AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl);
 824        AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl);
 825        AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl);
 826
 827        return 0;
 828}
 829
 830
 831/* configure phy after Link change Event */
 832void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed)
 833{
 834        u16 phy_val;
 835        bool adj_thresh = false;
 836
 837        if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ||
 838            hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2)
 839                adj_thresh = true;
 840
 841        if (link_speed != SPEED_0) { /* link up */
 842                /* az with brcm, half-amp */
 843                if (hw->nic_type == athr_l1d_2) {
 844                        atl1c_read_phy_ext(hw, MIIEXT_PCS, MIIEXT_CLDCTRL6,
 845                                &phy_val);
 846                        phy_val = FIELD_GETX(phy_val, CLDCTRL6_CAB_LEN);
 847                        phy_val = phy_val > CLDCTRL6_CAB_LEN_SHORT ?
 848                                AZ_ANADECT_LONG : AZ_ANADECT_DEF;
 849                        atl1c_write_phy_dbg(hw, MIIDBG_AZ_ANADECT, phy_val);
 850                }
 851                /* threshold adjust */
 852                if (adj_thresh && link_speed == SPEED_100 && hw->msi_lnkpatch) {
 853                        atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB, L1D_MSE16DB_UP);
 854                        atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
 855                                L1D_SYSMODCTRL_IECHOADJ_DEF);
 856                }
 857        } else { /* link down */
 858                if (adj_thresh && hw->msi_lnkpatch) {
 859                        atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
 860                                SYSMODCTRL_IECHOADJ_DEF);
 861                        atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB,
 862                                L1D_MSE16DB_DOWN);
 863                }
 864        }
 865}
 866