root/drivers/net/ethernet/sfc/falcon/falcon_boards.c

DEFINITIONS

1. ef4_poke_lm87
2. ef4_init_lm87
3. ef4_fini_lm87
4. ef4_check_lm87
5. ef4_init_lm87
6. ef4_fini_lm87
7. ef4_check_lm87
8. sfe4001_poweroff
9. sfe4001_poweron
10. show_phy_flash_cfg
11. set_phy_flash_cfg
12. sfe4001_fini
13. sfe4001_check_hw
14. sfe4001_init
15. sfe4002_init_phy
16. sfe4002_set_id_led
17. sfe4002_check_hw
18. sfe4002_init
19. sfn4112f_init_phy
20. sfn4112f_set_id_led
21. sfn4112f_check_hw
22. sfn4112f_init
23. sfe4003_set_id_led
24. sfe4003_init_phy
25. sfe4003_check_hw
26. sfe4003_init
27. falcon_probe_board

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /****************************************************************************
   3  * Driver for Solarflare network controllers and boards
   4  * Copyright 2007-2012 Solarflare Communications Inc.
   5  */
   6 
   7 #include <linux/rtnetlink.h>
   8 
   9 #include "net_driver.h"
  10 #include "phy.h"
  11 #include "efx.h"
  12 #include "nic.h"
  13 #include "workarounds.h"
  14 
  15 /* Macros for unpacking the board revision */
  16 /* The revision info is in host byte order. */
  17 #define FALCON_BOARD_TYPE(_rev) (_rev >> 8)
  18 #define FALCON_BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
  19 #define FALCON_BOARD_MINOR(_rev) (_rev & 0xf)
  20 
  21 /* Board types */
  22 #define FALCON_BOARD_SFE4001 0x01
  23 #define FALCON_BOARD_SFE4002 0x02
  24 #define FALCON_BOARD_SFE4003 0x03
  25 #define FALCON_BOARD_SFN4112F 0x52
  26 
  27 /* Board temperature is about 15°C above ambient when air flow is
  28  * limited.  The maximum acceptable ambient temperature varies
  29  * depending on the PHY specifications but the critical temperature
  30  * above which we should shut down to avoid damage is 80°C. */
  31 #define FALCON_BOARD_TEMP_BIAS  15
  32 #define FALCON_BOARD_TEMP_CRIT  (80 + FALCON_BOARD_TEMP_BIAS)
  33 
  34 /* SFC4000 datasheet says: 'The maximum permitted junction temperature
  35  * is 125°C; the thermal design of the environment for the SFC4000
  36  * should aim to keep this well below 100°C.' */
  37 #define FALCON_JUNC_TEMP_MIN    0
  38 #define FALCON_JUNC_TEMP_MAX    90
  39 #define FALCON_JUNC_TEMP_CRIT   125
  40 
  41 /*****************************************************************************
  42  * Support for LM87 sensor chip used on several boards
  43  */
  44 #define LM87_REG_TEMP_HW_INT_LOCK       0x13
  45 #define LM87_REG_TEMP_HW_EXT_LOCK       0x14
  46 #define LM87_REG_TEMP_HW_INT            0x17
  47 #define LM87_REG_TEMP_HW_EXT            0x18
  48 #define LM87_REG_TEMP_EXT1              0x26
  49 #define LM87_REG_TEMP_INT               0x27
  50 #define LM87_REG_ALARMS1                0x41
  51 #define LM87_REG_ALARMS2                0x42
  52 #define LM87_IN_LIMITS(nr, _min, _max)                  \
  53         0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
  54 #define LM87_AIN_LIMITS(nr, _min, _max)                 \
  55         0x3B + (nr), _max, 0x1A + (nr), _min
  56 #define LM87_TEMP_INT_LIMITS(_min, _max)                \
  57         0x39, _max, 0x3A, _min
  58 #define LM87_TEMP_EXT1_LIMITS(_min, _max)               \
  59         0x37, _max, 0x38, _min
  60 
  61 #define LM87_ALARM_TEMP_INT             0x10
  62 #define LM87_ALARM_TEMP_EXT1            0x20
  63 
  64 #if IS_ENABLED(CONFIG_SENSORS_LM87)
  65 
  66 static int ef4_poke_lm87(struct i2c_client *client, const u8 *reg_values)
  67 {
  68         while (*reg_values) {
  69                 u8 reg = *reg_values++;
  70                 u8 value = *reg_values++;
  71                 int rc = i2c_smbus_write_byte_data(client, reg, value);
  72                 if (rc)
  73                         return rc;
  74         }
  75         return 0;
  76 }
  77 
  78 static const u8 falcon_lm87_common_regs[] = {
  79         LM87_REG_TEMP_HW_INT_LOCK, FALCON_BOARD_TEMP_CRIT,
  80         LM87_REG_TEMP_HW_INT, FALCON_BOARD_TEMP_CRIT,
  81         LM87_TEMP_EXT1_LIMITS(FALCON_JUNC_TEMP_MIN, FALCON_JUNC_TEMP_MAX),
  82         LM87_REG_TEMP_HW_EXT_LOCK, FALCON_JUNC_TEMP_CRIT,
  83         LM87_REG_TEMP_HW_EXT, FALCON_JUNC_TEMP_CRIT,
  84         0
  85 };
  86 
  87 static int ef4_init_lm87(struct ef4_nic *efx, const struct i2c_board_info *info,
  88                          const u8 *reg_values)
  89 {
  90         struct falcon_board *board = falcon_board(efx);
  91         struct i2c_client *client = i2c_new_device(&board->i2c_adap, info);
  92         int rc;
  93 
  94         if (!client)
  95                 return -EIO;
  96 
  97         /* Read-to-clear alarm/interrupt status */
  98         i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
  99         i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
 100 
 101         rc = ef4_poke_lm87(client, reg_values);
 102         if (rc)
 103                 goto err;
 104         rc = ef4_poke_lm87(client, falcon_lm87_common_regs);
 105         if (rc)
 106                 goto err;
 107 
 108         board->hwmon_client = client;
 109         return 0;
 110 
 111 err:
 112         i2c_unregister_device(client);
 113         return rc;
 114 }
 115 
 116 static void ef4_fini_lm87(struct ef4_nic *efx)
 117 {
 118         i2c_unregister_device(falcon_board(efx)->hwmon_client);
 119 }
 120 
 121 static int ef4_check_lm87(struct ef4_nic *efx, unsigned mask)
 122 {
 123         struct i2c_client *client = falcon_board(efx)->hwmon_client;
 124         bool temp_crit, elec_fault, is_failure;
 125         u16 alarms;
 126         s32 reg;
 127 
 128         /* If link is up then do not monitor temperature */
 129         if (EF4_WORKAROUND_7884(efx) && efx->link_state.up)
 130                 return 0;
 131 
 132         reg = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
 133         if (reg < 0)
 134                 return reg;
 135         alarms = reg;
 136         reg = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
 137         if (reg < 0)
 138                 return reg;
 139         alarms |= reg << 8;
 140         alarms &= mask;
 141 
 142         temp_crit = false;
 143         if (alarms & LM87_ALARM_TEMP_INT) {
 144                 reg = i2c_smbus_read_byte_data(client, LM87_REG_TEMP_INT);
 145                 if (reg < 0)
 146                         return reg;
 147                 if (reg > FALCON_BOARD_TEMP_CRIT)
 148                         temp_crit = true;
 149         }
 150         if (alarms & LM87_ALARM_TEMP_EXT1) {
 151                 reg = i2c_smbus_read_byte_data(client, LM87_REG_TEMP_EXT1);
 152                 if (reg < 0)
 153                         return reg;
 154                 if (reg > FALCON_JUNC_TEMP_CRIT)
 155                         temp_crit = true;
 156         }
 157         elec_fault = alarms & ~(LM87_ALARM_TEMP_INT | LM87_ALARM_TEMP_EXT1);
 158         is_failure = temp_crit || elec_fault;
 159 
 160         if (alarms)
 161                 netif_err(efx, hw, efx->net_dev,
 162                           "LM87 detected a hardware %s (status %02x:%02x)"
 163                           "%s%s%s%s\n",
 164                           is_failure ? "failure" : "problem",
 165                           alarms & 0xff, alarms >> 8,
 166                           (alarms & LM87_ALARM_TEMP_INT) ?
 167                           "; board is overheating" : "",
 168                           (alarms & LM87_ALARM_TEMP_EXT1) ?
 169                           "; controller is overheating" : "",
 170                           temp_crit ? "; reached critical temperature" : "",
 171                           elec_fault ? "; electrical fault" : "");
 172 
 173         return is_failure ? -ERANGE : 0;
 174 }
 175 
 176 #else /* !CONFIG_SENSORS_LM87 */
 177 
 178 static inline int
 179 ef4_init_lm87(struct ef4_nic *efx, const struct i2c_board_info *info,
 180               const u8 *reg_values)
 181 {
 182         return 0;
 183 }
 184 static inline void ef4_fini_lm87(struct ef4_nic *efx)
 185 {
 186 }
 187 static inline int ef4_check_lm87(struct ef4_nic *efx, unsigned mask)
 188 {
 189         return 0;
 190 }
 191 
 192 #endif /* CONFIG_SENSORS_LM87 */
 193 
 194 /*****************************************************************************
 195  * Support for the SFE4001 NIC.
 196  *
 197  * The SFE4001 does not power-up fully at reset due to its high power
 198  * consumption.  We control its power via a PCA9539 I/O expander.
 199  * It also has a MAX6647 temperature monitor which we expose to
 200  * the lm90 driver.
 201  *
 202  * This also provides minimal support for reflashing the PHY, which is
 203  * initiated by resetting it with the FLASH_CFG_1 pin pulled down.
 204  * On SFE4001 rev A2 and later this is connected to the 3V3X output of
 205  * the IO-expander.
 206  * We represent reflash mode as PHY_MODE_SPECIAL and make it mutually
 207  * exclusive with the network device being open.
 208  */
 209 
 210 /**************************************************************************
 211  * Support for I2C IO Expander device on SFE4001
 212  */
 213 #define PCA9539 0x74
 214 
 215 #define P0_IN 0x00
 216 #define P0_OUT 0x02
 217 #define P0_INVERT 0x04
 218 #define P0_CONFIG 0x06
 219 
 220 #define P0_EN_1V0X_LBN 0
 221 #define P0_EN_1V0X_WIDTH 1
 222 #define P0_EN_1V2_LBN 1
 223 #define P0_EN_1V2_WIDTH 1
 224 #define P0_EN_2V5_LBN 2
 225 #define P0_EN_2V5_WIDTH 1
 226 #define P0_EN_3V3X_LBN 3
 227 #define P0_EN_3V3X_WIDTH 1
 228 #define P0_EN_5V_LBN 4
 229 #define P0_EN_5V_WIDTH 1
 230 #define P0_SHORTEN_JTAG_LBN 5
 231 #define P0_SHORTEN_JTAG_WIDTH 1
 232 #define P0_X_TRST_LBN 6
 233 #define P0_X_TRST_WIDTH 1
 234 #define P0_DSP_RESET_LBN 7
 235 #define P0_DSP_RESET_WIDTH 1
 236 
 237 #define P1_IN 0x01
 238 #define P1_OUT 0x03
 239 #define P1_INVERT 0x05
 240 #define P1_CONFIG 0x07
 241 
 242 #define P1_AFE_PWD_LBN 0
 243 #define P1_AFE_PWD_WIDTH 1
 244 #define P1_DSP_PWD25_LBN 1
 245 #define P1_DSP_PWD25_WIDTH 1
 246 #define P1_RESERVED_LBN 2
 247 #define P1_RESERVED_WIDTH 2
 248 #define P1_SPARE_LBN 4
 249 #define P1_SPARE_WIDTH 4
 250 
 251 /* Temperature Sensor */
 252 #define MAX664X_REG_RSL         0x02
 253 #define MAX664X_REG_WLHO        0x0B
 254 
 255 static void sfe4001_poweroff(struct ef4_nic *efx)
 256 {
 257         struct i2c_client *ioexp_client = falcon_board(efx)->ioexp_client;
 258         struct i2c_client *hwmon_client = falcon_board(efx)->hwmon_client;
 259 
 260         /* Turn off all power rails and disable outputs */
 261         i2c_smbus_write_byte_data(ioexp_client, P0_OUT, 0xff);
 262         i2c_smbus_write_byte_data(ioexp_client, P1_CONFIG, 0xff);
 263         i2c_smbus_write_byte_data(ioexp_client, P0_CONFIG, 0xff);
 264 
 265         /* Clear any over-temperature alert */
 266         i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
 267 }
 268 
 269 static int sfe4001_poweron(struct ef4_nic *efx)
 270 {
 271         struct i2c_client *ioexp_client = falcon_board(efx)->ioexp_client;
 272         struct i2c_client *hwmon_client = falcon_board(efx)->hwmon_client;
 273         unsigned int i, j;
 274         int rc;
 275         u8 out;
 276 
 277         /* Clear any previous over-temperature alert */
 278         rc = i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
 279         if (rc < 0)
 280                 return rc;
 281 
 282         /* Enable port 0 and port 1 outputs on IO expander */
 283         rc = i2c_smbus_write_byte_data(ioexp_client, P0_CONFIG, 0x00);
 284         if (rc)
 285                 return rc;
 286         rc = i2c_smbus_write_byte_data(ioexp_client, P1_CONFIG,
 287                                        0xff & ~(1 << P1_SPARE_LBN));
 288         if (rc)
 289                 goto fail_on;
 290 
 291         /* If PHY power is on, turn it all off and wait 1 second to
 292          * ensure a full reset.
 293          */
 294         rc = i2c_smbus_read_byte_data(ioexp_client, P0_OUT);
 295         if (rc < 0)
 296                 goto fail_on;
 297         out = 0xff & ~((0 << P0_EN_1V2_LBN) | (0 << P0_EN_2V5_LBN) |
 298                        (0 << P0_EN_3V3X_LBN) | (0 << P0_EN_5V_LBN) |
 299                        (0 << P0_EN_1V0X_LBN));
 300         if (rc != out) {
 301                 netif_info(efx, hw, efx->net_dev, "power-cycling PHY\n");
 302                 rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
 303                 if (rc)
 304                         goto fail_on;
 305                 schedule_timeout_uninterruptible(HZ);
 306         }
 307 
 308         for (i = 0; i < 20; ++i) {
 309                 /* Turn on 1.2V, 2.5V, 3.3V and 5V power rails */
 310                 out = 0xff & ~((1 << P0_EN_1V2_LBN) | (1 << P0_EN_2V5_LBN) |
 311                                (1 << P0_EN_3V3X_LBN) | (1 << P0_EN_5V_LBN) |
 312                                (1 << P0_X_TRST_LBN));
 313                 if (efx->phy_mode & PHY_MODE_SPECIAL)
 314                         out |= 1 << P0_EN_3V3X_LBN;
 315 
 316                 rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
 317                 if (rc)
 318                         goto fail_on;
 319                 msleep(10);
 320 
 321                 /* Turn on 1V power rail */
 322                 out &= ~(1 << P0_EN_1V0X_LBN);
 323                 rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
 324                 if (rc)
 325                         goto fail_on;
 326 
 327                 netif_info(efx, hw, efx->net_dev,
 328                            "waiting for DSP boot (attempt %d)...\n", i);
 329 
 330                 /* In flash config mode, DSP does not turn on AFE, so
 331                  * just wait 1 second.
 332                  */
 333                 if (efx->phy_mode & PHY_MODE_SPECIAL) {
 334                         schedule_timeout_uninterruptible(HZ);
 335                         return 0;
 336                 }
 337 
 338                 for (j = 0; j < 10; ++j) {
 339                         msleep(100);
 340 
 341                         /* Check DSP has asserted AFE power line */
 342                         rc = i2c_smbus_read_byte_data(ioexp_client, P1_IN);
 343                         if (rc < 0)
 344                                 goto fail_on;
 345                         if (rc & (1 << P1_AFE_PWD_LBN))
 346                                 return 0;
 347                 }
 348         }
 349 
 350         netif_info(efx, hw, efx->net_dev, "timed out waiting for DSP boot\n");
 351         rc = -ETIMEDOUT;
 352 fail_on:
 353         sfe4001_poweroff(efx);
 354         return rc;
 355 }
 356 
 357 static ssize_t show_phy_flash_cfg(struct device *dev,
 358                                   struct device_attribute *attr, char *buf)
 359 {
 360         struct ef4_nic *efx = dev_get_drvdata(dev);
 361         return sprintf(buf, "%d\n", !!(efx->phy_mode & PHY_MODE_SPECIAL));
 362 }
 363 
 364 static ssize_t set_phy_flash_cfg(struct device *dev,
 365                                  struct device_attribute *attr,
 366                                  const char *buf, size_t count)
 367 {
 368         struct ef4_nic *efx = dev_get_drvdata(dev);
 369         enum ef4_phy_mode old_mode, new_mode;
 370         int err;
 371 
 372         rtnl_lock();
 373         old_mode = efx->phy_mode;
 374         if (count == 0 || *buf == '0')
 375                 new_mode = old_mode & ~PHY_MODE_SPECIAL;
 376         else
 377                 new_mode = PHY_MODE_SPECIAL;
 378         if (!((old_mode ^ new_mode) & PHY_MODE_SPECIAL)) {
 379                 err = 0;
 380         } else if (efx->state != STATE_READY || netif_running(efx->net_dev)) {
 381                 err = -EBUSY;
 382         } else {
 383                 /* Reset the PHY, reconfigure the MAC and enable/disable
 384                  * MAC stats accordingly. */
 385                 efx->phy_mode = new_mode;
 386                 if (new_mode & PHY_MODE_SPECIAL)
 387                         falcon_stop_nic_stats(efx);
 388                 err = sfe4001_poweron(efx);
 389                 if (!err)
 390                         err = ef4_reconfigure_port(efx);
 391                 if (!(new_mode & PHY_MODE_SPECIAL))
 392                         falcon_start_nic_stats(efx);
 393         }
 394         rtnl_unlock();
 395 
 396         return err ? err : count;
 397 }
 398 
 399 static DEVICE_ATTR(phy_flash_cfg, 0644, show_phy_flash_cfg, set_phy_flash_cfg);
 400 
 401 static void sfe4001_fini(struct ef4_nic *efx)
 402 {
 403         struct falcon_board *board = falcon_board(efx);
 404 
 405         netif_info(efx, drv, efx->net_dev, "%s\n", __func__);
 406 
 407         device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
 408         sfe4001_poweroff(efx);
 409         i2c_unregister_device(board->ioexp_client);
 410         i2c_unregister_device(board->hwmon_client);
 411 }
 412 
 413 static int sfe4001_check_hw(struct ef4_nic *efx)
 414 {
 415         struct falcon_nic_data *nic_data = efx->nic_data;
 416         s32 status;
 417 
 418         /* If XAUI link is up then do not monitor */
 419         if (EF4_WORKAROUND_7884(efx) && !nic_data->xmac_poll_required)
 420                 return 0;
 421 
 422         /* Check the powered status of the PHY. Lack of power implies that
 423          * the MAX6647 has shut down power to it, probably due to a temp.
 424          * alarm. Reading the power status rather than the MAX6647 status
 425          * directly because the later is read-to-clear and would thus
 426          * start to power up the PHY again when polled, causing us to blip
 427          * the power undesirably.
 428          * We know we can read from the IO expander because we did
 429          * it during power-on. Assume failure now is bad news. */
 430         status = i2c_smbus_read_byte_data(falcon_board(efx)->ioexp_client, P1_IN);
 431         if (status >= 0 &&
 432             (status & ((1 << P1_AFE_PWD_LBN) | (1 << P1_DSP_PWD25_LBN))) != 0)
 433                 return 0;
 434 
 435         /* Use board power control, not PHY power control */
 436         sfe4001_poweroff(efx);
 437         efx->phy_mode = PHY_MODE_OFF;
 438 
 439         return (status < 0) ? -EIO : -ERANGE;
 440 }
 441 
 442 static const struct i2c_board_info sfe4001_hwmon_info = {
 443         I2C_BOARD_INFO("max6647", 0x4e),
 444 };
 445 
 446 /* This board uses an I2C expander to provider power to the PHY, which needs to
 447  * be turned on before the PHY can be used.
 448  * Context: Process context, rtnl lock held
 449  */
 450 static int sfe4001_init(struct ef4_nic *efx)
 451 {
 452         struct falcon_board *board = falcon_board(efx);
 453         int rc;
 454 
 455 #if IS_ENABLED(CONFIG_SENSORS_LM90)
 456         board->hwmon_client =
 457                 i2c_new_client_device(&board->i2c_adap, &sfe4001_hwmon_info);
 458 #else
 459         board->hwmon_client =
 460                 i2c_new_dummy_device(&board->i2c_adap, sfe4001_hwmon_info.addr);
 461 #endif
 462         if (IS_ERR(board->hwmon_client))
 463                 return PTR_ERR(board->hwmon_client);
 464 
 465         /* Raise board/PHY high limit from 85 to 90 degrees Celsius */
 466         rc = i2c_smbus_write_byte_data(board->hwmon_client,
 467                                        MAX664X_REG_WLHO, 90);
 468         if (rc)
 469                 goto fail_hwmon;
 470 
 471         board->ioexp_client = i2c_new_dummy_device(&board->i2c_adap, PCA9539);
 472         if (IS_ERR(board->ioexp_client)) {
 473                 rc = PTR_ERR(board->ioexp_client);
 474                 goto fail_hwmon;
 475         }
 476 
 477         if (efx->phy_mode & PHY_MODE_SPECIAL) {
 478                 /* PHY won't generate a 156.25 MHz clock and MAC stats fetch
 479                  * will fail. */
 480                 falcon_stop_nic_stats(efx);
 481         }
 482         rc = sfe4001_poweron(efx);
 483         if (rc)
 484                 goto fail_ioexp;
 485 
 486         rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
 487         if (rc)
 488                 goto fail_on;
 489 
 490         netif_info(efx, hw, efx->net_dev, "PHY is powered on\n");
 491         return 0;
 492 
 493 fail_on:
 494         sfe4001_poweroff(efx);
 495 fail_ioexp:
 496         i2c_unregister_device(board->ioexp_client);
 497 fail_hwmon:
 498         i2c_unregister_device(board->hwmon_client);
 499         return rc;
 500 }
 501 
 502 /*****************************************************************************
 503  * Support for the SFE4002
 504  *
 505  */
 506 static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
 507 
 508 static const u8 sfe4002_lm87_regs[] = {
 509         LM87_IN_LIMITS(0, 0x7c, 0x99),          /* 2.5V:  1.8V +/- 10% */
 510         LM87_IN_LIMITS(1, 0x4c, 0x5e),          /* Vccp1: 1.2V +/- 10% */
 511         LM87_IN_LIMITS(2, 0xac, 0xd4),          /* 3.3V:  3.3V +/- 10% */
 512         LM87_IN_LIMITS(3, 0xac, 0xd4),          /* 5V:    5.0V +/- 10% */
 513         LM87_IN_LIMITS(4, 0xac, 0xe0),          /* 12V:   10.8-14V */
 514         LM87_IN_LIMITS(5, 0x3f, 0x4f),          /* Vccp2: 1.0V +/- 10% */
 515         LM87_AIN_LIMITS(0, 0x98, 0xbb),         /* AIN1:  1.66V +/- 10% */
 516         LM87_AIN_LIMITS(1, 0x8a, 0xa9),         /* AIN2:  1.5V +/- 10% */
 517         LM87_TEMP_INT_LIMITS(0, 80 + FALCON_BOARD_TEMP_BIAS),
 518         LM87_TEMP_EXT1_LIMITS(0, FALCON_JUNC_TEMP_MAX),
 519         0
 520 };
 521 
 522 static const struct i2c_board_info sfe4002_hwmon_info = {
 523         I2C_BOARD_INFO("lm87", 0x2e),
 524         .platform_data  = &sfe4002_lm87_channel,
 525 };
 526 
 527 /****************************************************************************/
 528 /* LED allocations. Note that on rev A0 boards the schematic and the reality
 529  * differ: red and green are swapped. Below is the fixed (A1) layout (there
 530  * are only 3 A0 boards in existence, so no real reason to make this
 531  * conditional).
 532  */
 533 #define SFE4002_FAULT_LED (2)   /* Red */
 534 #define SFE4002_RX_LED    (0)   /* Green */
 535 #define SFE4002_TX_LED    (1)   /* Amber */
 536 
 537 static void sfe4002_init_phy(struct ef4_nic *efx)
 538 {
 539         /* Set the TX and RX LEDs to reflect status and activity, and the
 540          * fault LED off */
 541         falcon_qt202x_set_led(efx, SFE4002_TX_LED,
 542                               QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
 543         falcon_qt202x_set_led(efx, SFE4002_RX_LED,
 544                               QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
 545         falcon_qt202x_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
 546 }
 547 
 548 static void sfe4002_set_id_led(struct ef4_nic *efx, enum ef4_led_mode mode)
 549 {
 550         falcon_qt202x_set_led(
 551                 efx, SFE4002_FAULT_LED,
 552                 (mode == EF4_LED_ON) ? QUAKE_LED_ON : QUAKE_LED_OFF);
 553 }
 554 
 555 static int sfe4002_check_hw(struct ef4_nic *efx)
 556 {
 557         struct falcon_board *board = falcon_board(efx);
 558 
 559         /* A0 board rev. 4002s report a temperature fault the whole time
 560          * (bad sensor) so we mask it out. */
 561         unsigned alarm_mask =
 562                 (board->major == 0 && board->minor == 0) ?
 563                 ~LM87_ALARM_TEMP_EXT1 : ~0;
 564 
 565         return ef4_check_lm87(efx, alarm_mask);
 566 }
 567 
 568 static int sfe4002_init(struct ef4_nic *efx)
 569 {
 570         return ef4_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
 571 }
 572 
 573 /*****************************************************************************
 574  * Support for the SFN4112F
 575  *
 576  */
 577 static u8 sfn4112f_lm87_channel = 0x03; /* use AIN not FAN inputs */
 578 
 579 static const u8 sfn4112f_lm87_regs[] = {
 580         LM87_IN_LIMITS(0, 0x7c, 0x99),          /* 2.5V:  1.8V +/- 10% */
 581         LM87_IN_LIMITS(1, 0x4c, 0x5e),          /* Vccp1: 1.2V +/- 10% */
 582         LM87_IN_LIMITS(2, 0xac, 0xd4),          /* 3.3V:  3.3V +/- 10% */
 583         LM87_IN_LIMITS(4, 0xac, 0xe0),          /* 12V:   10.8-14V */
 584         LM87_IN_LIMITS(5, 0x3f, 0x4f),          /* Vccp2: 1.0V +/- 10% */
 585         LM87_AIN_LIMITS(1, 0x8a, 0xa9),         /* AIN2:  1.5V +/- 10% */
 586         LM87_TEMP_INT_LIMITS(0, 60 + FALCON_BOARD_TEMP_BIAS),
 587         LM87_TEMP_EXT1_LIMITS(0, FALCON_JUNC_TEMP_MAX),
 588         0
 589 };
 590 
 591 static const struct i2c_board_info sfn4112f_hwmon_info = {
 592         I2C_BOARD_INFO("lm87", 0x2e),
 593         .platform_data  = &sfn4112f_lm87_channel,
 594 };
 595 
 596 #define SFN4112F_ACT_LED        0
 597 #define SFN4112F_LINK_LED       1
 598 
 599 static void sfn4112f_init_phy(struct ef4_nic *efx)
 600 {
 601         falcon_qt202x_set_led(efx, SFN4112F_ACT_LED,
 602                               QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACT);
 603         falcon_qt202x_set_led(efx, SFN4112F_LINK_LED,
 604                               QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT);
 605 }
 606 
 607 static void sfn4112f_set_id_led(struct ef4_nic *efx, enum ef4_led_mode mode)
 608 {
 609         int reg;
 610 
 611         switch (mode) {
 612         case EF4_LED_OFF:
 613                 reg = QUAKE_LED_OFF;
 614                 break;
 615         case EF4_LED_ON:
 616                 reg = QUAKE_LED_ON;
 617                 break;
 618         default:
 619                 reg = QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT;
 620                 break;
 621         }
 622 
 623         falcon_qt202x_set_led(efx, SFN4112F_LINK_LED, reg);
 624 }
 625 
 626 static int sfn4112f_check_hw(struct ef4_nic *efx)
 627 {
 628         /* Mask out unused sensors */
 629         return ef4_check_lm87(efx, ~0x48);
 630 }
 631 
 632 static int sfn4112f_init(struct ef4_nic *efx)
 633 {
 634         return ef4_init_lm87(efx, &sfn4112f_hwmon_info, sfn4112f_lm87_regs);
 635 }
 636 
 637 /*****************************************************************************
 638  * Support for the SFE4003
 639  *
 640  */
 641 static u8 sfe4003_lm87_channel = 0x03; /* use AIN not FAN inputs */
 642 
 643 static const u8 sfe4003_lm87_regs[] = {
 644         LM87_IN_LIMITS(0, 0x67, 0x7f),          /* 2.5V:  1.5V +/- 10% */
 645         LM87_IN_LIMITS(1, 0x4c, 0x5e),          /* Vccp1: 1.2V +/- 10% */
 646         LM87_IN_LIMITS(2, 0xac, 0xd4),          /* 3.3V:  3.3V +/- 10% */
 647         LM87_IN_LIMITS(4, 0xac, 0xe0),          /* 12V:   10.8-14V */
 648         LM87_IN_LIMITS(5, 0x3f, 0x4f),          /* Vccp2: 1.0V +/- 10% */
 649         LM87_TEMP_INT_LIMITS(0, 70 + FALCON_BOARD_TEMP_BIAS),
 650         0
 651 };
 652 
 653 static const struct i2c_board_info sfe4003_hwmon_info = {
 654         I2C_BOARD_INFO("lm87", 0x2e),
 655         .platform_data  = &sfe4003_lm87_channel,
 656 };
 657 
 658 /* Board-specific LED info. */
 659 #define SFE4003_RED_LED_GPIO    11
 660 #define SFE4003_LED_ON          1
 661 #define SFE4003_LED_OFF         0
 662 
 663 static void sfe4003_set_id_led(struct ef4_nic *efx, enum ef4_led_mode mode)
 664 {
 665         struct falcon_board *board = falcon_board(efx);
 666 
 667         /* The LEDs were not wired to GPIOs before A3 */
 668         if (board->minor < 3 && board->major == 0)
 669                 return;
 670 
 671         falcon_txc_set_gpio_val(
 672                 efx, SFE4003_RED_LED_GPIO,
 673                 (mode == EF4_LED_ON) ? SFE4003_LED_ON : SFE4003_LED_OFF);
 674 }
 675 
 676 static void sfe4003_init_phy(struct ef4_nic *efx)
 677 {
 678         struct falcon_board *board = falcon_board(efx);
 679 
 680         /* The LEDs were not wired to GPIOs before A3 */
 681         if (board->minor < 3 && board->major == 0)
 682                 return;
 683 
 684         falcon_txc_set_gpio_dir(efx, SFE4003_RED_LED_GPIO, TXC_GPIO_DIR_OUTPUT);
 685         falcon_txc_set_gpio_val(efx, SFE4003_RED_LED_GPIO, SFE4003_LED_OFF);
 686 }
 687 
 688 static int sfe4003_check_hw(struct ef4_nic *efx)
 689 {
 690         struct falcon_board *board = falcon_board(efx);
 691 
 692         /* A0/A1/A2 board rev. 4003s  report a temperature fault the whole time
 693          * (bad sensor) so we mask it out. */
 694         unsigned alarm_mask =
 695                 (board->major == 0 && board->minor <= 2) ?
 696                 ~LM87_ALARM_TEMP_EXT1 : ~0;
 697 
 698         return ef4_check_lm87(efx, alarm_mask);
 699 }
 700 
 701 static int sfe4003_init(struct ef4_nic *efx)
 702 {
 703         return ef4_init_lm87(efx, &sfe4003_hwmon_info, sfe4003_lm87_regs);
 704 }
 705 
 706 static const struct falcon_board_type board_types[] = {
 707         {
 708                 .id             = FALCON_BOARD_SFE4001,
 709                 .init           = sfe4001_init,
 710                 .init_phy       = ef4_port_dummy_op_void,
 711                 .fini           = sfe4001_fini,
 712                 .set_id_led     = tenxpress_set_id_led,
 713                 .monitor        = sfe4001_check_hw,
 714         },
 715         {
 716                 .id             = FALCON_BOARD_SFE4002,
 717                 .init           = sfe4002_init,
 718                 .init_phy       = sfe4002_init_phy,
 719                 .fini           = ef4_fini_lm87,
 720                 .set_id_led     = sfe4002_set_id_led,
 721                 .monitor        = sfe4002_check_hw,
 722         },
 723         {
 724                 .id             = FALCON_BOARD_SFE4003,
 725                 .init           = sfe4003_init,
 726                 .init_phy       = sfe4003_init_phy,
 727                 .fini           = ef4_fini_lm87,
 728                 .set_id_led     = sfe4003_set_id_led,
 729                 .monitor        = sfe4003_check_hw,
 730         },
 731         {
 732                 .id             = FALCON_BOARD_SFN4112F,
 733                 .init           = sfn4112f_init,
 734                 .init_phy       = sfn4112f_init_phy,
 735                 .fini           = ef4_fini_lm87,
 736                 .set_id_led     = sfn4112f_set_id_led,
 737                 .monitor        = sfn4112f_check_hw,
 738         },
 739 };
 740 
 741 int falcon_probe_board(struct ef4_nic *efx, u16 revision_info)
 742 {
 743         struct falcon_board *board = falcon_board(efx);
 744         u8 type_id = FALCON_BOARD_TYPE(revision_info);
 745         int i;
 746 
 747         board->major = FALCON_BOARD_MAJOR(revision_info);
 748         board->minor = FALCON_BOARD_MINOR(revision_info);
 749 
 750         for (i = 0; i < ARRAY_SIZE(board_types); i++)
 751                 if (board_types[i].id == type_id)
 752                         board->type = &board_types[i];
 753 
 754         if (board->type) {
 755                 return 0;
 756         } else {
 757                 netif_err(efx, probe, efx->net_dev, "unknown board type %d\n",
 758                           type_id);
 759                 return -ENODEV;
 760         }
 761 }