drivers/net/ethernet/atheros/atl1c/atl1c

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This source file includes following definitions.
atl1c_check_eeprom_exist
atl1c_hw_set_mac_addr
atl1c_read_current_addr
atl1c_get_permanent_address
atl1c_read_eeprom
atl1c_read_mac_addr
atl1c_hash_mc_addr
atl1c_hash_set
atl1c_wait_mdio_idle
atl1c_stop_phy_polling
atl1c_start_phy_polling
atl1c_read_phy_core
atl1c_write_phy_core
atl1c_read_phy_reg
atl1c_write_phy_reg
atl1c_read_phy_ext
atl1c_write_phy_ext
atl1c_read_phy_dbg
atl1c_write_phy_dbg
atl1c_phy_setup_adv
atl1c_phy_disable
atl1c_phy_reset
atl1c_phy_init
atl1c_get_speed_and_duplex
atl1c_phy_to_ps_link
atl1c_restart_autoneg
atl1c_power_saving
atl1c_post_phy_linkchg
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright(c) 2007 Atheros Corporation. All rights reserved.
   4  *
   5  * Derived from Intel e1000 driver
   6  * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   7  */
   8 #include <linux/pci.h>
   9 #include <linux/delay.h>
  10 #include <linux/mii.h>
  11 #include <linux/crc32.h>
  12 
  13 #include "atl1c.h"
  14 
  15 /*
  16  * check_eeprom_exist
  17  * return 1 if eeprom exist
  18  */
  19 int atl1c_check_eeprom_exist(struct atl1c_hw *hw)
  20 {
  21         u32 data;
  22 
  23         AT_READ_REG(hw, REG_TWSI_DEBUG, &data);
  24         if (data & TWSI_DEBUG_DEV_EXIST)
  25                 return 1;
  26 
  27         AT_READ_REG(hw, REG_MASTER_CTRL, &data);
  28         if (data & MASTER_CTRL_OTP_SEL)
  29                 return 1;
  30         return 0;
  31 }
  32 
  33 void atl1c_hw_set_mac_addr(struct atl1c_hw *hw, u8 *mac_addr)
  34 {
  35         u32 value;
  36         /*
  37          * 00-0B-6A-F6-00-DC
  38          * 0:  6AF600DC 1: 000B
  39          * low dword
  40          */
  41         value = mac_addr[2] << 24 |
  42                 mac_addr[3] << 16 |
  43                 mac_addr[4] << 8  |
  44                 mac_addr[5];
  45         AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 0, value);
  46         /* hight dword */
  47         value = mac_addr[0] << 8 |
  48                 mac_addr[1];
  49         AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 1, value);
  50 }
  51 
  52 /* read mac address from hardware register */
  53 static bool atl1c_read_current_addr(struct atl1c_hw *hw, u8 *eth_addr)
  54 {
  55         u32 addr[2];
  56 
  57         AT_READ_REG(hw, REG_MAC_STA_ADDR, &addr[0]);
  58         AT_READ_REG(hw, REG_MAC_STA_ADDR + 4, &addr[1]);
  59 
  60         *(u32 *) &eth_addr[2] = htonl(addr[0]);
  61         *(u16 *) &eth_addr[0] = htons((u16)addr[1]);
  62 
  63         return is_valid_ether_addr(eth_addr);
  64 }
  65 
  66 /*
  67  * atl1c_get_permanent_address
  68  * return 0 if get valid mac address,
  69  */
  70 static int atl1c_get_permanent_address(struct atl1c_hw *hw)
  71 {
  72         u32 i;
  73         u32 otp_ctrl_data;
  74         u32 twsi_ctrl_data;
  75         u16 phy_data;
  76         bool raise_vol = false;
  77 
  78         /* MAC-address from BIOS is the 1st priority */
  79         if (atl1c_read_current_addr(hw, hw->perm_mac_addr))
  80                 return 0;
  81 
  82         /* init */
  83         AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
  84         if (atl1c_check_eeprom_exist(hw)) {
  85                 if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) {
  86                         /* Enable OTP CLK */
  87                         if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) {
  88                                 otp_ctrl_data |= OTP_CTRL_CLK_EN;
  89                                 AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
  90                                 AT_WRITE_FLUSH(hw);
  91                                 msleep(1);
  92                         }
  93                 }
  94                 /* raise voltage temporally for l2cb */
  95                 if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
  96                         atl1c_read_phy_dbg(hw, MIIDBG_ANACTRL, &phy_data);
  97                         phy_data &= ~ANACTRL_HB_EN;
  98                         atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, phy_data);
  99                         atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
 100                         phy_data |= VOLT_CTRL_SWLOWEST;
 101                         atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
 102                         udelay(20);
 103                         raise_vol = true;
 104                 }
 105 
 106                 AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data);
 107                 twsi_ctrl_data |= TWSI_CTRL_SW_LDSTART;
 108                 AT_WRITE_REG(hw, REG_TWSI_CTRL, twsi_ctrl_data);
 109                 for (i = 0; i < AT_TWSI_EEPROM_TIMEOUT; i++) {
 110                         msleep(10);
 111                         AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data);
 112                         if ((twsi_ctrl_data & TWSI_CTRL_SW_LDSTART) == 0)
 113                                 break;
 114                 }
 115                 if (i >= AT_TWSI_EEPROM_TIMEOUT)
 116                         return -1;
 117         }
 118         /* Disable OTP_CLK */
 119         if ((hw->nic_type == athr_l1c || hw->nic_type == athr_l2c)) {
 120                 otp_ctrl_data &= ~OTP_CTRL_CLK_EN;
 121                 AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
 122                 msleep(1);
 123         }
 124         if (raise_vol) {
 125                 atl1c_read_phy_dbg(hw, MIIDBG_ANACTRL, &phy_data);
 126                 phy_data |= ANACTRL_HB_EN;
 127                 atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, phy_data);
 128                 atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
 129                 phy_data &= ~VOLT_CTRL_SWLOWEST;
 130                 atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
 131                 udelay(20);
 132         }
 133 
 134         if (atl1c_read_current_addr(hw, hw->perm_mac_addr))
 135                 return 0;
 136 
 137         return -1;
 138 }
 139 
 140 bool atl1c_read_eeprom(struct atl1c_hw *hw, u32 offset, u32 *p_value)
 141 {
 142         int i;
 143         bool ret = false;
 144         u32 otp_ctrl_data;
 145         u32 control;
 146         u32 data;
 147 
 148         if (offset & 3)
 149                 return ret; /* address do not align */
 150 
 151         AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
 152         if (!(otp_ctrl_data & OTP_CTRL_CLK_EN))
 153                 AT_WRITE_REG(hw, REG_OTP_CTRL,
 154                                 (otp_ctrl_data | OTP_CTRL_CLK_EN));
 155 
 156         AT_WRITE_REG(hw, REG_EEPROM_DATA_LO, 0);
 157         control = (offset & EEPROM_CTRL_ADDR_MASK) << EEPROM_CTRL_ADDR_SHIFT;
 158         AT_WRITE_REG(hw, REG_EEPROM_CTRL, control);
 159 
 160         for (i = 0; i < 10; i++) {
 161                 udelay(100);
 162                 AT_READ_REG(hw, REG_EEPROM_CTRL, &control);
 163                 if (control & EEPROM_CTRL_RW)
 164                         break;
 165         }
 166         if (control & EEPROM_CTRL_RW) {
 167                 AT_READ_REG(hw, REG_EEPROM_CTRL, &data);
 168                 AT_READ_REG(hw, REG_EEPROM_DATA_LO, p_value);
 169                 data = data & 0xFFFF;
 170                 *p_value = swab32((data << 16) | (*p_value >> 16));
 171                 ret = true;
 172         }
 173         if (!(otp_ctrl_data & OTP_CTRL_CLK_EN))
 174                 AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
 175 
 176         return ret;
 177 }
 178 /*
 179  * Reads the adapter's MAC address from the EEPROM
 180  *
 181  * hw - Struct containing variables accessed by shared code
 182  */
 183 int atl1c_read_mac_addr(struct atl1c_hw *hw)
 184 {
 185         int err = 0;
 186 
 187         err = atl1c_get_permanent_address(hw);
 188         if (err)
 189                 eth_random_addr(hw->perm_mac_addr);
 190 
 191         memcpy(hw->mac_addr, hw->perm_mac_addr, sizeof(hw->perm_mac_addr));
 192         return err;
 193 }
 194 
 195 /*
 196  * atl1c_hash_mc_addr
 197  *  purpose
 198  *      set hash value for a multicast address
 199  *      hash calcu processing :
 200  *          1. calcu 32bit CRC for multicast address
 201  *          2. reverse crc with MSB to LSB
 202  */
 203 u32 atl1c_hash_mc_addr(struct atl1c_hw *hw, u8 *mc_addr)
 204 {
 205         u32 crc32;
 206         u32 value = 0;
 207         int i;
 208 
 209         crc32 = ether_crc_le(6, mc_addr);
 210         for (i = 0; i < 32; i++)
 211                 value |= (((crc32 >> i) & 1) << (31 - i));
 212 
 213         return value;
 214 }
 215 
 216 /*
 217  * Sets the bit in the multicast table corresponding to the hash value.
 218  * hw - Struct containing variables accessed by shared code
 219  * hash_value - Multicast address hash value
 220  */
 221 void atl1c_hash_set(struct atl1c_hw *hw, u32 hash_value)
 222 {
 223         u32 hash_bit, hash_reg;
 224         u32 mta;
 225 
 226         /*
 227          * The HASH Table  is a register array of 2 32-bit registers.
 228          * It is treated like an array of 64 bits.  We want to set
 229          * bit BitArray[hash_value]. So we figure out what register
 230          * the bit is in, read it, OR in the new bit, then write
 231          * back the new value.  The register is determined by the
 232          * upper bit of the hash value and the bit within that
 233          * register are determined by the lower 5 bits of the value.
 234          */
 235         hash_reg = (hash_value >> 31) & 0x1;
 236         hash_bit = (hash_value >> 26) & 0x1F;
 237 
 238         mta = AT_READ_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg);
 239 
 240         mta |= (1 << hash_bit);
 241 
 242         AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg, mta);
 243 }
 244 
 245 /*
 246  * wait mdio module be idle
 247  * return true: idle
 248  *        false: still busy
 249  */
 250 bool atl1c_wait_mdio_idle(struct atl1c_hw *hw)
 251 {
 252         u32 val;
 253         int i;
 254 
 255         for (i = 0; i < MDIO_MAX_AC_TO; i++) {
 256                 AT_READ_REG(hw, REG_MDIO_CTRL, &val);
 257                 if (!(val & (MDIO_CTRL_BUSY | MDIO_CTRL_START)))
 258                         break;
 259                 udelay(10);
 260         }
 261 
 262         return i != MDIO_MAX_AC_TO;
 263 }
 264 
 265 void atl1c_stop_phy_polling(struct atl1c_hw *hw)
 266 {
 267         if (!(hw->ctrl_flags & ATL1C_FPGA_VERSION))
 268                 return;
 269 
 270         AT_WRITE_REG(hw, REG_MDIO_CTRL, 0);
 271         atl1c_wait_mdio_idle(hw);
 272 }
 273 
 274 void atl1c_start_phy_polling(struct atl1c_hw *hw, u16 clk_sel)
 275 {
 276         u32 val;
 277 
 278         if (!(hw->ctrl_flags & ATL1C_FPGA_VERSION))
 279                 return;
 280 
 281         val = MDIO_CTRL_SPRES_PRMBL |
 282                 FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 283                 FIELDX(MDIO_CTRL_REG, 1) |
 284                 MDIO_CTRL_START |
 285                 MDIO_CTRL_OP_READ;
 286         AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 287         atl1c_wait_mdio_idle(hw);
 288         val |= MDIO_CTRL_AP_EN;
 289         val &= ~MDIO_CTRL_START;
 290         AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 291         udelay(30);
 292 }
 293 
 294 
 295 /*
 296  * atl1c_read_phy_core
 297  * core function to read register in PHY via MDIO control register.
 298  * ext: extension register (see IEEE 802.3)
 299  * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
 300  * reg: reg to read
 301  */
 302 int atl1c_read_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
 303                         u16 reg, u16 *phy_data)
 304 {
 305         u32 val;
 306         u16 clk_sel = MDIO_CTRL_CLK_25_4;
 307 
 308         atl1c_stop_phy_polling(hw);
 309 
 310         *phy_data = 0;
 311 
 312         /* only l2c_b2 & l1d_2 could use slow clock */
 313         if ((hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) &&
 314                 hw->hibernate)
 315                 clk_sel = MDIO_CTRL_CLK_25_128;
 316         if (ext) {
 317                 val = FIELDX(MDIO_EXTN_DEVAD, dev) | FIELDX(MDIO_EXTN_REG, reg);
 318                 AT_WRITE_REG(hw, REG_MDIO_EXTN, val);
 319                 val = MDIO_CTRL_SPRES_PRMBL |
 320                         FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 321                         MDIO_CTRL_START |
 322                         MDIO_CTRL_MODE_EXT |
 323                         MDIO_CTRL_OP_READ;
 324         } else {
 325                 val = MDIO_CTRL_SPRES_PRMBL |
 326                         FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 327                         FIELDX(MDIO_CTRL_REG, reg) |
 328                         MDIO_CTRL_START |
 329                         MDIO_CTRL_OP_READ;
 330         }
 331         AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 332 
 333         if (!atl1c_wait_mdio_idle(hw))
 334                 return -1;
 335 
 336         AT_READ_REG(hw, REG_MDIO_CTRL, &val);
 337         *phy_data = (u16)FIELD_GETX(val, MDIO_CTRL_DATA);
 338 
 339         atl1c_start_phy_polling(hw, clk_sel);
 340 
 341         return 0;
 342 }
 343 
 344 /*
 345  * atl1c_write_phy_core
 346  * core function to write to register in PHY via MDIO control register.
 347  * ext: extension register (see IEEE 802.3)
 348  * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
 349  * reg: reg to write
 350  */
 351 int atl1c_write_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
 352                         u16 reg, u16 phy_data)
 353 {
 354         u32 val;
 355         u16 clk_sel = MDIO_CTRL_CLK_25_4;
 356 
 357         atl1c_stop_phy_polling(hw);
 358 
 359 
 360         /* only l2c_b2 & l1d_2 could use slow clock */
 361         if ((hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) &&
 362                 hw->hibernate)
 363                 clk_sel = MDIO_CTRL_CLK_25_128;
 364 
 365         if (ext) {
 366                 val = FIELDX(MDIO_EXTN_DEVAD, dev) | FIELDX(MDIO_EXTN_REG, reg);
 367                 AT_WRITE_REG(hw, REG_MDIO_EXTN, val);
 368                 val = MDIO_CTRL_SPRES_PRMBL |
 369                         FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 370                         FIELDX(MDIO_CTRL_DATA, phy_data) |
 371                         MDIO_CTRL_START |
 372                         MDIO_CTRL_MODE_EXT;
 373         } else {
 374                 val = MDIO_CTRL_SPRES_PRMBL |
 375                         FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
 376                         FIELDX(MDIO_CTRL_DATA, phy_data) |
 377                         FIELDX(MDIO_CTRL_REG, reg) |
 378                         MDIO_CTRL_START;
 379         }
 380         AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
 381 
 382         if (!atl1c_wait_mdio_idle(hw))
 383                 return -1;
 384 
 385         atl1c_start_phy_polling(hw, clk_sel);
 386 
 387         return 0;
 388 }
 389 
 390 /*
 391  * Reads the value from a PHY register
 392  * hw - Struct containing variables accessed by shared code
 393  * reg_addr - address of the PHY register to read
 394  */
 395 int atl1c_read_phy_reg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
 396 {
 397         return atl1c_read_phy_core(hw, false, 0, reg_addr, phy_data);
 398 }
 399 
 400 /*
 401  * Writes a value to a PHY register
 402  * hw - Struct containing variables accessed by shared code
 403  * reg_addr - address of the PHY register to write
 404  * data - data to write to the PHY
 405  */
 406 int atl1c_write_phy_reg(struct atl1c_hw *hw, u32 reg_addr, u16 phy_data)
 407 {
 408         return atl1c_write_phy_core(hw, false, 0, reg_addr, phy_data);
 409 }
 410 
 411 /* read from PHY extension register */
 412 int atl1c_read_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
 413                         u16 reg_addr, u16 *phy_data)
 414 {
 415         return atl1c_read_phy_core(hw, true, dev_addr, reg_addr, phy_data);
 416 }
 417 
 418 /* write to PHY extension register */
 419 int atl1c_write_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
 420                         u16 reg_addr, u16 phy_data)
 421 {
 422         return atl1c_write_phy_core(hw, true, dev_addr, reg_addr, phy_data);
 423 }
 424 
 425 int atl1c_read_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
 426 {
 427         int err;
 428 
 429         err = atl1c_write_phy_reg(hw, MII_DBG_ADDR, reg_addr);
 430         if (unlikely(err))
 431                 return err;
 432         else
 433                 err = atl1c_read_phy_reg(hw, MII_DBG_DATA, phy_data);
 434 
 435         return err;
 436 }
 437 
 438 int atl1c_write_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_write_phy_reg(hw, MII_DBG_DATA, phy_data);
 447 
 448         return err;
 449 }
 450 
 451 /*
 452  * Configures PHY autoneg and flow control advertisement settings
 453  *
 454  * hw - Struct containing variables accessed by shared code
 455  */
 456 static int atl1c_phy_setup_adv(struct atl1c_hw *hw)
 457 {
 458         u16 mii_adv_data = ADVERTISE_DEFAULT_CAP & ~ADVERTISE_ALL;
 459         u16 mii_giga_ctrl_data = GIGA_CR_1000T_DEFAULT_CAP &
 460                                 ~GIGA_CR_1000T_SPEED_MASK;
 461 
 462         if (hw->autoneg_advertised & ADVERTISED_10baseT_Half)
 463                 mii_adv_data |= ADVERTISE_10HALF;
 464         if (hw->autoneg_advertised & ADVERTISED_10baseT_Full)
 465                 mii_adv_data |= ADVERTISE_10FULL;
 466         if (hw->autoneg_advertised & ADVERTISED_100baseT_Half)
 467                 mii_adv_data |= ADVERTISE_100HALF;
 468         if (hw->autoneg_advertised & ADVERTISED_100baseT_Full)
 469                 mii_adv_data |= ADVERTISE_100FULL;
 470 
 471         if (hw->autoneg_advertised & ADVERTISED_Autoneg)
 472                 mii_adv_data |= ADVERTISE_10HALF  | ADVERTISE_10FULL |
 473                                 ADVERTISE_100HALF | ADVERTISE_100FULL;
 474 
 475         if (hw->link_cap_flags & ATL1C_LINK_CAP_1000M) {
 476                 if (hw->autoneg_advertised & ADVERTISED_1000baseT_Half)
 477                         mii_giga_ctrl_data |= ADVERTISE_1000HALF;
 478                 if (hw->autoneg_advertised & ADVERTISED_1000baseT_Full)
 479                         mii_giga_ctrl_data |= ADVERTISE_1000FULL;
 480                 if (hw->autoneg_advertised & ADVERTISED_Autoneg)
 481                         mii_giga_ctrl_data |= ADVERTISE_1000HALF |
 482                                         ADVERTISE_1000FULL;
 483         }
 484 
 485         if (atl1c_write_phy_reg(hw, MII_ADVERTISE, mii_adv_data) != 0 ||
 486             atl1c_write_phy_reg(hw, MII_CTRL1000, mii_giga_ctrl_data) != 0)
 487                 return -1;
 488         return 0;
 489 }
 490 
 491 void atl1c_phy_disable(struct atl1c_hw *hw)
 492 {
 493         atl1c_power_saving(hw, 0);
 494 }
 495 
 496 
 497 int atl1c_phy_reset(struct atl1c_hw *hw)
 498 {
 499         struct atl1c_adapter *adapter = hw->adapter;
 500         struct pci_dev *pdev = adapter->pdev;
 501         u16 phy_data;
 502         u32 phy_ctrl_data, lpi_ctrl;
 503         int err;
 504 
 505         /* reset PHY core */
 506         AT_READ_REG(hw, REG_GPHY_CTRL, &phy_ctrl_data);
 507         phy_ctrl_data &= ~(GPHY_CTRL_EXT_RESET | GPHY_CTRL_PHY_IDDQ |
 508                 GPHY_CTRL_GATE_25M_EN | GPHY_CTRL_PWDOWN_HW | GPHY_CTRL_CLS);
 509         phy_ctrl_data |= GPHY_CTRL_SEL_ANA_RST;
 510         if (!(hw->ctrl_flags & ATL1C_HIB_DISABLE))
 511                 phy_ctrl_data |= (GPHY_CTRL_HIB_EN | GPHY_CTRL_HIB_PULSE);
 512         else
 513                 phy_ctrl_data &= ~(GPHY_CTRL_HIB_EN | GPHY_CTRL_HIB_PULSE);
 514         AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data);
 515         AT_WRITE_FLUSH(hw);
 516         udelay(10);
 517         AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data | GPHY_CTRL_EXT_RESET);
 518         AT_WRITE_FLUSH(hw);
 519         udelay(10 * GPHY_CTRL_EXT_RST_TO);      /* delay 800us */
 520 
 521         /* switch clock */
 522         if (hw->nic_type == athr_l2c_b) {
 523                 atl1c_read_phy_dbg(hw, MIIDBG_CFGLPSPD, &phy_data);
 524                 atl1c_write_phy_dbg(hw, MIIDBG_CFGLPSPD,
 525                         phy_data & ~CFGLPSPD_RSTCNT_CLK125SW);
 526         }
 527 
 528         /* tx-half amplitude issue fix */
 529         if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
 530                 atl1c_read_phy_dbg(hw, MIIDBG_CABLE1TH_DET, &phy_data);
 531                 phy_data |= CABLE1TH_DET_EN;
 532                 atl1c_write_phy_dbg(hw, MIIDBG_CABLE1TH_DET, phy_data);
 533         }
 534 
 535         /* clear bit3 of dbgport 3B to lower voltage */
 536         if (!(hw->ctrl_flags & ATL1C_HIB_DISABLE)) {
 537                 if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
 538                         atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
 539                         phy_data &= ~VOLT_CTRL_SWLOWEST;
 540                         atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
 541                 }
 542                 /* power saving config */
 543                 phy_data =
 544                         hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2 ?
 545                         L1D_LEGCYPS_DEF : L1C_LEGCYPS_DEF;
 546                 atl1c_write_phy_dbg(hw, MIIDBG_LEGCYPS, phy_data);
 547                 /* hib */
 548                 atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
 549                         SYSMODCTRL_IECHOADJ_DEF);
 550         } else {
 551                 /* disable pws */
 552                 atl1c_read_phy_dbg(hw, MIIDBG_LEGCYPS, &phy_data);
 553                 atl1c_write_phy_dbg(hw, MIIDBG_LEGCYPS,
 554                         phy_data & ~LEGCYPS_EN);
 555                 /* disable hibernate */
 556                 atl1c_read_phy_dbg(hw, MIIDBG_HIBNEG, &phy_data);
 557                 atl1c_write_phy_dbg(hw, MIIDBG_HIBNEG,
 558                         phy_data & HIBNEG_PSHIB_EN);
 559         }
 560         /* disable AZ(EEE) by default */
 561         if (hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2 ||
 562             hw->nic_type == athr_l2c_b2) {
 563                 AT_READ_REG(hw, REG_LPI_CTRL, &lpi_ctrl);
 564                 AT_WRITE_REG(hw, REG_LPI_CTRL, lpi_ctrl & ~LPI_CTRL_EN);
 565                 atl1c_write_phy_ext(hw, MIIEXT_ANEG, MIIEXT_LOCAL_EEEADV, 0);
 566                 atl1c_write_phy_ext(hw, MIIEXT_PCS, MIIEXT_CLDCTRL3,
 567                         L2CB_CLDCTRL3);
 568         }
 569 
 570         /* other debug port to set */
 571         atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, ANACTRL_DEF);
 572         atl1c_write_phy_dbg(hw, MIIDBG_SRDSYSMOD, SRDSYSMOD_DEF);
 573         atl1c_write_phy_dbg(hw, MIIDBG_TST10BTCFG, TST10BTCFG_DEF);
 574         /* UNH-IOL test issue, set bit7 */
 575         atl1c_write_phy_dbg(hw, MIIDBG_TST100BTCFG,
 576                 TST100BTCFG_DEF | TST100BTCFG_LITCH_EN);
 577 
 578         /* set phy interrupt mask */
 579         phy_data = IER_LINK_UP | IER_LINK_DOWN;
 580         err = atl1c_write_phy_reg(hw, MII_IER, phy_data);
 581         if (err) {
 582                 if (netif_msg_hw(adapter))
 583                         dev_err(&pdev->dev,
 584                                 "Error enable PHY linkChange Interrupt\n");
 585                 return err;
 586         }
 587         return 0;
 588 }
 589 
 590 int atl1c_phy_init(struct atl1c_hw *hw)
 591 {
 592         struct atl1c_adapter *adapter = hw->adapter;
 593         struct pci_dev *pdev = adapter->pdev;
 594         int ret_val;
 595         u16 mii_bmcr_data = BMCR_RESET;
 596 
 597         if ((atl1c_read_phy_reg(hw, MII_PHYSID1, &hw->phy_id1) != 0) ||
 598                 (atl1c_read_phy_reg(hw, MII_PHYSID2, &hw->phy_id2) != 0)) {
 599                 dev_err(&pdev->dev, "Error get phy ID\n");
 600                 return -1;
 601         }
 602         switch (hw->media_type) {
 603         case MEDIA_TYPE_AUTO_SENSOR:
 604                 ret_val = atl1c_phy_setup_adv(hw);
 605                 if (ret_val) {
 606                         if (netif_msg_link(adapter))
 607                                 dev_err(&pdev->dev,
 608                                         "Error Setting up Auto-Negotiation\n");
 609                         return ret_val;
 610                 }
 611                 mii_bmcr_data |= BMCR_ANENABLE | BMCR_ANRESTART;
 612                 break;
 613         case MEDIA_TYPE_100M_FULL:
 614                 mii_bmcr_data |= BMCR_SPEED100 | BMCR_FULLDPLX;
 615                 break;
 616         case MEDIA_TYPE_100M_HALF:
 617                 mii_bmcr_data |= BMCR_SPEED100;
 618                 break;
 619         case MEDIA_TYPE_10M_FULL:
 620                 mii_bmcr_data |= BMCR_FULLDPLX;
 621                 break;
 622         case MEDIA_TYPE_10M_HALF:
 623                 break;
 624         default:
 625                 if (netif_msg_link(adapter))
 626                         dev_err(&pdev->dev, "Wrong Media type %d\n",
 627                                 hw->media_type);
 628                 return -1;
 629         }
 630 
 631         ret_val = atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data);
 632         if (ret_val)
 633                 return ret_val;
 634         hw->phy_configured = true;
 635 
 636         return 0;
 637 }
 638 
 639 /*
 640  * Detects the current speed and duplex settings of the hardware.
 641  *
 642  * hw - Struct containing variables accessed by shared code
 643  * speed - Speed of the connection
 644  * duplex - Duplex setting of the connection
 645  */
 646 int atl1c_get_speed_and_duplex(struct atl1c_hw *hw, u16 *speed, u16 *duplex)
 647 {
 648         int err;
 649         u16 phy_data;
 650 
 651         /* Read   PHY Specific Status Register (17) */
 652         err = atl1c_read_phy_reg(hw, MII_GIGA_PSSR, &phy_data);
 653         if (err)
 654                 return err;
 655 
 656         if (!(phy_data & GIGA_PSSR_SPD_DPLX_RESOLVED))
 657                 return -1;
 658 
 659         switch (phy_data & GIGA_PSSR_SPEED) {
 660         case GIGA_PSSR_1000MBS:
 661                 *speed = SPEED_1000;
 662                 break;
 663         case GIGA_PSSR_100MBS:
 664                 *speed = SPEED_100;
 665                 break;
 666         case  GIGA_PSSR_10MBS:
 667                 *speed = SPEED_10;
 668                 break;
 669         default:
 670                 return -1;
 671         }
 672 
 673         if (phy_data & GIGA_PSSR_DPLX)
 674                 *duplex = FULL_DUPLEX;
 675         else
 676                 *duplex = HALF_DUPLEX;
 677 
 678         return 0;
 679 }
 680 
 681 /* select one link mode to get lower power consumption */
 682 int atl1c_phy_to_ps_link(struct atl1c_hw *hw)
 683 {
 684         struct atl1c_adapter *adapter = hw->adapter;
 685         struct pci_dev *pdev = adapter->pdev;
 686         int ret = 0;
 687         u16 autoneg_advertised = ADVERTISED_10baseT_Half;
 688         u16 save_autoneg_advertised;
 689         u16 phy_data;
 690         u16 mii_lpa_data;
 691         u16 speed = SPEED_0;
 692         u16 duplex = FULL_DUPLEX;
 693         int i;
 694 
 695         atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 696         atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 697         if (phy_data & BMSR_LSTATUS) {
 698                 atl1c_read_phy_reg(hw, MII_LPA, &mii_lpa_data);
 699                 if (mii_lpa_data & LPA_10FULL)
 700                         autoneg_advertised = ADVERTISED_10baseT_Full;
 701                 else if (mii_lpa_data & LPA_10HALF)
 702                         autoneg_advertised = ADVERTISED_10baseT_Half;
 703                 else if (mii_lpa_data & LPA_100HALF)
 704                         autoneg_advertised = ADVERTISED_100baseT_Half;
 705                 else if (mii_lpa_data & LPA_100FULL)
 706                         autoneg_advertised = ADVERTISED_100baseT_Full;
 707 
 708                 save_autoneg_advertised = hw->autoneg_advertised;
 709                 hw->phy_configured = false;
 710                 hw->autoneg_advertised = autoneg_advertised;
 711                 if (atl1c_restart_autoneg(hw) != 0) {
 712                         dev_dbg(&pdev->dev, "phy autoneg failed\n");
 713                         ret = -1;
 714                 }
 715                 hw->autoneg_advertised = save_autoneg_advertised;
 716 
 717                 if (mii_lpa_data) {
 718                         for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) {
 719                                 mdelay(100);
 720                                 atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 721                                 atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
 722                                 if (phy_data & BMSR_LSTATUS) {
 723                                         if (atl1c_get_speed_and_duplex(hw, &speed,
 724                                                                         &duplex) != 0)
 725                                                 dev_dbg(&pdev->dev,
 726                                                         "get speed and duplex failed\n");
 727                                         break;
 728                                 }
 729                         }
 730                 }
 731         } else {
 732                 speed = SPEED_10;
 733                 duplex = HALF_DUPLEX;
 734         }
 735         adapter->link_speed = speed;
 736         adapter->link_duplex = duplex;
 737 
 738         return ret;
 739 }
 740 
 741 int atl1c_restart_autoneg(struct atl1c_hw *hw)
 742 {
 743         int err = 0;
 744         u16 mii_bmcr_data = BMCR_RESET;
 745 
 746         err = atl1c_phy_setup_adv(hw);
 747         if (err)
 748                 return err;
 749         mii_bmcr_data |= BMCR_ANENABLE | BMCR_ANRESTART;
 750 
 751         return atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data);
 752 }
 753 
 754 int atl1c_power_saving(struct atl1c_hw *hw, u32 wufc)
 755 {
 756         struct atl1c_adapter *adapter = hw->adapter;
 757         struct pci_dev *pdev = adapter->pdev;
 758         u32 master_ctrl, mac_ctrl, phy_ctrl;
 759         u32 wol_ctrl, speed;
 760         u16 phy_data;
 761 
 762         wol_ctrl = 0;
 763         speed = adapter->link_speed == SPEED_1000 ?
 764                 MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100;
 765 
 766         AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl);
 767         AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl);
 768         AT_READ_REG(hw, REG_GPHY_CTRL, &phy_ctrl);
 769 
 770         master_ctrl &= ~MASTER_CTRL_CLK_SEL_DIS;
 771         mac_ctrl = FIELD_SETX(mac_ctrl, MAC_CTRL_SPEED, speed);
 772         mac_ctrl &= ~(MAC_CTRL_DUPLX | MAC_CTRL_RX_EN | MAC_CTRL_TX_EN);
 773         if (adapter->link_duplex == FULL_DUPLEX)
 774                 mac_ctrl |= MAC_CTRL_DUPLX;
 775         phy_ctrl &= ~(GPHY_CTRL_EXT_RESET | GPHY_CTRL_CLS);
 776         phy_ctrl |= GPHY_CTRL_SEL_ANA_RST | GPHY_CTRL_HIB_PULSE |
 777                 GPHY_CTRL_HIB_EN;
 778         if (!wufc) { /* without WoL */
 779                 master_ctrl |= MASTER_CTRL_CLK_SEL_DIS;
 780                 phy_ctrl |= GPHY_CTRL_PHY_IDDQ | GPHY_CTRL_PWDOWN_HW;
 781                 AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl);
 782                 AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl);
 783                 AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl);
 784                 AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
 785                 hw->phy_configured = false; /* re-init PHY when resume */
 786                 return 0;
 787         }
 788         phy_ctrl |= GPHY_CTRL_EXT_RESET;
 789         if (wufc & AT_WUFC_MAG) {
 790                 mac_ctrl |= MAC_CTRL_RX_EN | MAC_CTRL_BC_EN;
 791                 wol_ctrl |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
 792                 if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V11)
 793                         wol_ctrl |= WOL_PATTERN_EN | WOL_PATTERN_PME_EN;
 794         }
 795         if (wufc & AT_WUFC_LNKC) {
 796                 wol_ctrl |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN;
 797                 if (atl1c_write_phy_reg(hw, MII_IER, IER_LINK_UP) != 0) {
 798                         dev_dbg(&pdev->dev, "%s: write phy MII_IER failed.\n",
 799                                 atl1c_driver_name);
 800                 }
 801         }
 802         /* clear PHY interrupt */
 803         atl1c_read_phy_reg(hw, MII_ISR, &phy_data);
 804 
 805         dev_dbg(&pdev->dev, "%s: suspend MAC=%x,MASTER=%x,PHY=0x%x,WOL=%x\n",
 806                 atl1c_driver_name, mac_ctrl, master_ctrl, phy_ctrl, wol_ctrl);
 807         AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl);
 808         AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl);
 809         AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl);
 810         AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl);
 811 
 812         return 0;
 813 }
 814 
 815 
 816 /* configure phy after Link change Event */
 817 void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed)
 818 {
 819         u16 phy_val;
 820         bool adj_thresh = false;
 821 
 822         if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ||
 823             hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2)
 824                 adj_thresh = true;
 825 
 826         if (link_speed != SPEED_0) { /* link up */
 827                 /* az with brcm, half-amp */
 828                 if (hw->nic_type == athr_l1d_2) {
 829                         atl1c_read_phy_ext(hw, MIIEXT_PCS, MIIEXT_CLDCTRL6,
 830                                 &phy_val);
 831                         phy_val = FIELD_GETX(phy_val, CLDCTRL6_CAB_LEN);
 832                         phy_val = phy_val > CLDCTRL6_CAB_LEN_SHORT ?
 833                                 AZ_ANADECT_LONG : AZ_ANADECT_DEF;
 834                         atl1c_write_phy_dbg(hw, MIIDBG_AZ_ANADECT, phy_val);
 835                 }
 836                 /* threshold adjust */
 837                 if (adj_thresh && link_speed == SPEED_100 && hw->msi_lnkpatch) {
 838                         atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB, L1D_MSE16DB_UP);
 839                         atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
 840                                 L1D_SYSMODCTRL_IECHOADJ_DEF);
 841                 }
 842         } else { /* link down */
 843                 if (adj_thresh && hw->msi_lnkpatch) {
 844                         atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
 845                                 SYSMODCTRL_IECHOADJ_DEF);
 846                         atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB,
 847                                 L1D_MSE16DB_DOWN);
 848                 }
 849         }
 850 }
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root/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c

DEFINITIONS
