LXR linux/drivers/net/sfc/boards.c

   1/****************************************************************************
   2 * Driver for Solarflare Solarstorm network controllers and boards
   3 * Copyright 2007-2008 Solarflare Communications Inc.
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of the GNU General Public License version 2 as published
   7 * by the Free Software Foundation, incorporated herein by reference.
   8 */
   9
  10#include "net_driver.h"
  11#include "phy.h"
  12#include "boards.h"
  13#include "efx.h"
  14#include "workarounds.h"
  15
  16/* Macros for unpacking the board revision */
  17/* The revision info is in host byte order. */
  18#define BOARD_TYPE(_rev) (_rev >> 8)
  19#define BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
  20#define BOARD_MINOR(_rev) (_rev & 0xf)
  21
  22/* Blink support. If the PHY has no auto-blink mode so we hang it off a timer */
  23#define BLINK_INTERVAL (HZ/2)
  24
  25static void blink_led_timer(unsigned long context)
  26{
  27        struct efx_nic *efx = (struct efx_nic *)context;
  28        struct efx_blinker *bl = &efx->board_info.blinker;
  29        efx->board_info.set_id_led(efx, bl->state);
  30        bl->state = !bl->state;
  31        if (bl->resubmit)
  32                mod_timer(&bl->timer, jiffies + BLINK_INTERVAL);
  33}
  34
  35static void board_blink(struct efx_nic *efx, bool blink)
  36{
  37        struct efx_blinker *blinker = &efx->board_info.blinker;
  38
  39        /* The rtnl mutex serialises all ethtool ioctls, so
  40         * nothing special needs doing here. */
  41        if (blink) {
  42                blinker->resubmit = true;
  43                blinker->state = false;
  44                setup_timer(&blinker->timer, blink_led_timer,
  45                            (unsigned long)efx);
  46                mod_timer(&blinker->timer, jiffies + BLINK_INTERVAL);
  47        } else {
  48                blinker->resubmit = false;
  49                if (blinker->timer.function)
  50                        del_timer_sync(&blinker->timer);
  51                efx->board_info.init_leds(efx);
  52        }
  53}
  54
  55/*****************************************************************************
  56 * Support for LM87 sensor chip used on several boards
  57 */
  58#define LM87_REG_ALARMS1                0x41
  59#define LM87_REG_ALARMS2                0x42
  60#define LM87_IN_LIMITS(nr, _min, _max)                  \
  61        0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
  62#define LM87_AIN_LIMITS(nr, _min, _max)                 \
  63        0x3B + (nr), _max, 0x1A + (nr), _min
  64#define LM87_TEMP_INT_LIMITS(_min, _max)                \
  65        0x39, _max, 0x3A, _min
  66#define LM87_TEMP_EXT1_LIMITS(_min, _max)               \
  67        0x37, _max, 0x38, _min
  68
  69#define LM87_ALARM_TEMP_INT             0x10
  70#define LM87_ALARM_TEMP_EXT1            0x20
  71
  72#if defined(CONFIG_SENSORS_LM87) || defined(CONFIG_SENSORS_LM87_MODULE)
  73
  74static int efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
  75                         const u8 *reg_values)
  76{
  77        struct i2c_client *client = i2c_new_device(&efx->i2c_adap, info);
  78        int rc;
  79
  80        if (!client)
  81                return -EIO;
  82
  83        while (*reg_values) {
  84                u8 reg = *reg_values++;
  85                u8 value = *reg_values++;
  86                rc = i2c_smbus_write_byte_data(client, reg, value);
  87                if (rc)
  88                        goto err;
  89        }
  90
  91        efx->board_info.hwmon_client = client;
  92        return 0;
  93
  94err:
  95        i2c_unregister_device(client);
  96        return rc;
  97}
  98
  99static void efx_fini_lm87(struct efx_nic *efx)
 100{
 101        i2c_unregister_device(efx->board_info.hwmon_client);
 102}
 103
 104static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
 105{
 106        struct i2c_client *client = efx->board_info.hwmon_client;
 107        s32 alarms1, alarms2;
 108
 109        /* If link is up then do not monitor temperature */
 110        if (EFX_WORKAROUND_7884(efx) && efx->link_up)
 111                return 0;
 112
 113        alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
 114        alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
 115        if (alarms1 < 0)
 116                return alarms1;
 117        if (alarms2 < 0)
 118                return alarms2;
 119        alarms1 &= mask;
 120        alarms2 &= mask >> 8;
 121        if (alarms1 || alarms2) {
 122                EFX_ERR(efx,
 123                        "LM87 detected a hardware failure (status %02x:%02x)"
 124                        "%s%s\n",
 125                        alarms1, alarms2,
 126                        (alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
 127                        (alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
 128                return -ERANGE;
 129        }
 130
 131        return 0;
 132}
 133
 134#else /* !CONFIG_SENSORS_LM87 */
 135
 136static inline int
 137efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
 138              const u8 *reg_values)
 139{
 140        return 0;
 141}
 142static inline void efx_fini_lm87(struct efx_nic *efx)
 143{
 144}
 145static inline int efx_check_lm87(struct efx_nic *efx, unsigned mask)
 146{
 147        return 0;
 148}
 149
 150#endif /* CONFIG_SENSORS_LM87 */
 151
 152/*****************************************************************************
 153 * Support for the SFE4002
 154 *
 155 */
 156static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
 157
 158static const u8 sfe4002_lm87_regs[] = {
 159        LM87_IN_LIMITS(0, 0x83, 0x91),          /* 2.5V:  1.8V +/- 5% */
 160        LM87_IN_LIMITS(1, 0x51, 0x5a),          /* Vccp1: 1.2V +/- 5% */
 161        LM87_IN_LIMITS(2, 0xb6, 0xca),          /* 3.3V:  3.3V +/- 5% */
 162        LM87_IN_LIMITS(3, 0xb0, 0xc9),          /* 5V:    4.6-5.2V */
 163        LM87_IN_LIMITS(4, 0xb0, 0xe0),          /* 12V:   11-14V */
 164        LM87_IN_LIMITS(5, 0x44, 0x4b),          /* Vccp2: 1.0V +/- 5% */
 165        LM87_AIN_LIMITS(0, 0xa0, 0xb2),         /* AIN1:  1.66V +/- 5% */
 166        LM87_AIN_LIMITS(1, 0x91, 0xa1),         /* AIN2:  1.5V +/- 5% */
 167        LM87_TEMP_INT_LIMITS(10, 60),           /* board */
 168        LM87_TEMP_EXT1_LIMITS(10, 70),          /* Falcon */
 169        0
 170};
 171
 172static struct i2c_board_info sfe4002_hwmon_info = {
 173        I2C_BOARD_INFO("lm87", 0x2e),
 174        .platform_data  = &sfe4002_lm87_channel,
 175};
 176
 177/****************************************************************************/
 178/* LED allocations. Note that on rev A0 boards the schematic and the reality
 179 * differ: red and green are swapped. Below is the fixed (A1) layout (there
 180 * are only 3 A0 boards in existence, so no real reason to make this
 181 * conditional).
 182 */
 183#define SFE4002_FAULT_LED (2)   /* Red */
 184#define SFE4002_RX_LED    (0)   /* Green */
 185#define SFE4002_TX_LED    (1)   /* Amber */
 186
 187static void sfe4002_init_leds(struct efx_nic *efx)
 188{
 189        /* Set the TX and RX LEDs to reflect status and activity, and the
 190         * fault LED off */
 191        xfp_set_led(efx, SFE4002_TX_LED,
 192                    QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
 193        xfp_set_led(efx, SFE4002_RX_LED,
 194                    QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
 195        xfp_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
 196}
 197
 198static void sfe4002_set_id_led(struct efx_nic *efx, bool state)
 199{
 200        xfp_set_led(efx, SFE4002_FAULT_LED, state ? QUAKE_LED_ON :
 201                        QUAKE_LED_OFF);
 202}
 203
 204static int sfe4002_check_hw(struct efx_nic *efx)
 205{
 206        /* A0 board rev. 4002s report a temperature fault the whole time
 207         * (bad sensor) so we mask it out. */
 208        unsigned alarm_mask =
 209                (efx->board_info.major == 0 && efx->board_info.minor == 0) ?
 210                ~LM87_ALARM_TEMP_EXT1 : ~0;
 211
 212        return efx_check_lm87(efx, alarm_mask);
 213}
 214
 215static int sfe4002_init(struct efx_nic *efx)
 216{
 217        int rc = efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
 218        if (rc)
 219                return rc;
 220        efx->board_info.monitor = sfe4002_check_hw;
 221        efx->board_info.init_leds = sfe4002_init_leds;
 222        efx->board_info.set_id_led = sfe4002_set_id_led;
 223        efx->board_info.blink = board_blink;
 224        efx->board_info.fini = efx_fini_lm87;
 225        return 0;
 226}
 227
 228/*****************************************************************************
 229 * Support for the SFN4112F
 230 *
 231 */
 232static u8 sfn4112f_lm87_channel = 0x03; /* use AIN not FAN inputs */
 233
 234static const u8 sfn4112f_lm87_regs[] = {
 235        LM87_IN_LIMITS(0, 0x83, 0x91),          /* 2.5V:  1.8V +/- 5% */
 236        LM87_IN_LIMITS(1, 0x51, 0x5a),          /* Vccp1: 1.2V +/- 5% */
 237        LM87_IN_LIMITS(2, 0xb6, 0xca),          /* 3.3V:  3.3V +/- 5% */
 238        LM87_IN_LIMITS(4, 0xb0, 0xe0),          /* 12V:   11-14V */
 239        LM87_IN_LIMITS(5, 0x44, 0x4b),          /* Vccp2: 1.0V +/- 5% */
 240        LM87_AIN_LIMITS(1, 0x91, 0xa1),         /* AIN2:  1.5V +/- 5% */
 241        LM87_TEMP_INT_LIMITS(10, 60),           /* board */
 242        LM87_TEMP_EXT1_LIMITS(10, 70),          /* Falcon */
 243        0
 244};
 245
 246static struct i2c_board_info sfn4112f_hwmon_info = {
 247        I2C_BOARD_INFO("lm87", 0x2e),
 248        .platform_data  = &sfn4112f_lm87_channel,
 249};
 250
 251#define SFN4112F_ACT_LED        0
 252#define SFN4112F_LINK_LED       1
 253
 254static void sfn4112f_init_leds(struct efx_nic *efx)
 255{
 256        xfp_set_led(efx, SFN4112F_ACT_LED,
 257                    QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACT);
 258        xfp_set_led(efx, SFN4112F_LINK_LED,
 259                    QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT);
 260}
 261
 262static void sfn4112f_set_id_led(struct efx_nic *efx, bool state)
 263{
 264        xfp_set_led(efx, SFN4112F_LINK_LED,
 265                    state ? QUAKE_LED_ON : QUAKE_LED_OFF);
 266}
 267
 268static int sfn4112f_check_hw(struct efx_nic *efx)
 269{
 270        /* Mask out unused sensors */
 271        return efx_check_lm87(efx, ~0x48);
 272}
 273
 274static int sfn4112f_init(struct efx_nic *efx)
 275{
 276        int rc = efx_init_lm87(efx, &sfn4112f_hwmon_info, sfn4112f_lm87_regs);
 277        if (rc)
 278                return rc;
 279        efx->board_info.monitor = sfn4112f_check_hw;
 280        efx->board_info.init_leds = sfn4112f_init_leds;
 281        efx->board_info.set_id_led = sfn4112f_set_id_led;
 282        efx->board_info.blink = board_blink;
 283        efx->board_info.fini = efx_fini_lm87;
 284        return 0;
 285}
 286
 287/* This will get expanded as board-specific details get moved out of the
 288 * PHY drivers. */
 289struct efx_board_data {
 290        enum efx_board_type type;
 291        const char *ref_model;
 292        const char *gen_type;
 293        int (*init) (struct efx_nic *nic);
 294};
 295
 296
 297static struct efx_board_data board_data[] = {
 298        { EFX_BOARD_SFE4001, "SFE4001", "10GBASE-T adapter", sfe4001_init },
 299        { EFX_BOARD_SFE4002, "SFE4002", "XFP adapter", sfe4002_init },
 300        { EFX_BOARD_SFN4111T, "SFN4111T", "100/1000/10GBASE-T adapter",
 301          sfn4111t_init },
 302        { EFX_BOARD_SFN4112F, "SFN4112F", "SFP+ adapter",
 303          sfn4112f_init },
 304};
 305
 306void efx_set_board_info(struct efx_nic *efx, u16 revision_info)
 307{
 308        struct efx_board_data *data = NULL;
 309        int i;
 310
 311        efx->board_info.type = BOARD_TYPE(revision_info);
 312        efx->board_info.major = BOARD_MAJOR(revision_info);
 313        efx->board_info.minor = BOARD_MINOR(revision_info);
 314
 315        for (i = 0; i < ARRAY_SIZE(board_data); i++)
 316                if (board_data[i].type == efx->board_info.type)
 317                        data = &board_data[i];
 318
 319        if (data) {
 320                EFX_INFO(efx, "board is %s rev %c%d\n",
 321                         (efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
 322                         ? data->ref_model : data->gen_type,
 323                         'A' + efx->board_info.major, efx->board_info.minor);
 324                efx->board_info.init = data->init;
 325        } else {
 326                EFX_ERR(efx, "unknown board type %d\n", efx->board_info.type);
 327        }
 328}
 329