drivers/net/sfc/falcon_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 FALCON_BOARD_TYPE(_rev) (_rev >> 8)
  19 #define FALCON_BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
  20 #define FALCON_BOARD_MINOR(_rev) (_rev & 0xf)
  21
  22 /* Board types */
  23 #define FALCON_BOARD_SFE4002 0x02
  24 #define FALCON_BOARD_SFN4111T 0x51
  25 #define FALCON_BOARD_SFN4112F 0x52
  26
  27 /* Blink support. If the PHY has no auto-blink mode so we hang it off a timer */
  28 #define BLINK_INTERVAL (HZ/2)
  29
  30 static void blink_led_timer(unsigned long context)
  31 {
  32         struct efx_nic *efx = (struct efx_nic *)context;
  33         struct efx_blinker *bl = &efx->board_info.blinker;
  34         efx->board_info.set_id_led(efx, bl->state);
  35         bl->state = !bl->state;
  36         if (bl->resubmit)
  37                 mod_timer(&bl->timer, jiffies + BLINK_INTERVAL);
  38 }
  39
  40 static void board_blink(struct efx_nic *efx, bool blink)
  41 {
  42         struct efx_blinker *blinker = &efx->board_info.blinker;
  43
  44         /* The rtnl mutex serialises all ethtool ioctls, so
  45          * nothing special needs doing here. */
  46         if (blink) {
  47                 blinker->resubmit = true;
  48                 blinker->state = false;
  49                 setup_timer(&blinker->timer, blink_led_timer,
  50                             (unsigned long)efx);
  51                 mod_timer(&blinker->timer, jiffies + BLINK_INTERVAL);
  52         } else {
  53                 blinker->resubmit = false;
  54                 if (blinker->timer.function)
  55                         del_timer_sync(&blinker->timer);
  56                 efx->board_info.init_leds(efx);
  57         }
  58 }
  59
  60 /*****************************************************************************
  61  * Support for LM87 sensor chip used on several boards
  62  */
  63 #define LM87_REG_ALARMS1                0x41
  64 #define LM87_REG_ALARMS2                0x42
  65 #define LM87_IN_LIMITS(nr, _min, _max)                  \
  66         0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
  67 #define LM87_AIN_LIMITS(nr, _min, _max)                 \
  68         0x3B + (nr), _max, 0x1A + (nr), _min
  69 #define LM87_TEMP_INT_LIMITS(_min, _max)                \
  70         0x39, _max, 0x3A, _min
  71 #define LM87_TEMP_EXT1_LIMITS(_min, _max)               \
  72         0x37, _max, 0x38, _min
  73
  74 #define LM87_ALARM_TEMP_INT             0x10
  75 #define LM87_ALARM_TEMP_EXT1            0x20
  76
  77 #if defined(CONFIG_SENSORS_LM87) || defined(CONFIG_SENSORS_LM87_MODULE)
  78
  79 static int efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
  80                          const u8 *reg_values)
  81 {
  82         struct i2c_client *client = i2c_new_device(&efx->i2c_adap, info);
  83         int rc;
  84
  85         if (!client)
  86                 return -EIO;
  87
  88         while (*reg_values) {
  89                 u8 reg = *reg_values++;
  90                 u8 value = *reg_values++;
  91                 rc = i2c_smbus_write_byte_data(client, reg, value);
  92                 if (rc)
  93                         goto err;
  94         }
  95
  96         efx->board_info.hwmon_client = client;
  97         return 0;
  98
  99 err:
 100         i2c_unregister_device(client);
 101         return rc;
 102 }
 103
 104 static void efx_fini_lm87(struct efx_nic *efx)
 105 {
 106         i2c_unregister_device(efx->board_info.hwmon_client);
 107 }
 108
 109 static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
 110 {
 111         struct i2c_client *client = efx->board_info.hwmon_client;
 112         s32 alarms1, alarms2;
 113
 114         /* If link is up then do not monitor temperature */
 115         if (EFX_WORKAROUND_7884(efx) && efx->link_up)
 116                 return 0;
 117
 118         alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
 119         alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
 120         if (alarms1 < 0)
 121                 return alarms1;
 122         if (alarms2 < 0)
 123                 return alarms2;
 124         alarms1 &= mask;
 125         alarms2 &= mask >> 8;
 126         if (alarms1 || alarms2) {
 127                 EFX_ERR(efx,
 128                         "LM87 detected a hardware failure (status %02x:%02x)"
 129                         "%s%s\n",
 130                         alarms1, alarms2,
 131                         (alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
 132                         (alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
 133                 return -ERANGE;
 134         }
 135
 136         return 0;
 137 }
 138
 139 #else /* !CONFIG_SENSORS_LM87 */
 140
 141 static inline int
 142 efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
 143               const u8 *reg_values)
 144 {
 145         return 0;
 146 }
 147 static inline void efx_fini_lm87(struct efx_nic *efx)
 148 {
 149 }
 150 static inline int efx_check_lm87(struct efx_nic *efx, unsigned mask)
 151 {
 152         return 0;
 153 }
 154
 155 #endif /* CONFIG_SENSORS_LM87 */
 156
 157 /*****************************************************************************
 158  * Support for the SFE4002
 159  *
 160  */
 161 static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
 162
 163 static const u8 sfe4002_lm87_regs[] = {
 164         LM87_IN_LIMITS(0, 0x83, 0x91),          /* 2.5V:  1.8V +/- 5% */
 165         LM87_IN_LIMITS(1, 0x51, 0x5a),          /* Vccp1: 1.2V +/- 5% */
 166         LM87_IN_LIMITS(2, 0xb6, 0xca),          /* 3.3V:  3.3V +/- 5% */
 167         LM87_IN_LIMITS(3, 0xb0, 0xc9),          /* 5V:    4.6-5.2V */
 168         LM87_IN_LIMITS(4, 0xb0, 0xe0),          /* 12V:   11-14V */
 169         LM87_IN_LIMITS(5, 0x44, 0x4b),          /* Vccp2: 1.0V +/- 5% */
 170         LM87_AIN_LIMITS(0, 0xa0, 0xb2),         /* AIN1:  1.66V +/- 5% */
 171         LM87_AIN_LIMITS(1, 0x91, 0xa1),         /* AIN2:  1.5V +/- 5% */
 172         LM87_TEMP_INT_LIMITS(10, 60),           /* board */
 173         LM87_TEMP_EXT1_LIMITS(10, 70),          /* Falcon */
 174         0
 175 };
 176
 177 static struct i2c_board_info sfe4002_hwmon_info = {
 178         I2C_BOARD_INFO("lm87", 0x2e),
 179         .platform_data  = &sfe4002_lm87_channel,
 180 };
 181
 182 /****************************************************************************/
 183 /* LED allocations. Note that on rev A0 boards the schematic and the reality
 184  * differ: red and green are swapped. Below is the fixed (A1) layout (there
 185  * are only 3 A0 boards in existence, so no real reason to make this
 186  * conditional).
 187  */
 188 #define SFE4002_FAULT_LED (2)   /* Red */
 189 #define SFE4002_RX_LED    (0)   /* Green */
 190 #define SFE4002_TX_LED    (1)   /* Amber */
 191
 192 static void sfe4002_init_leds(struct efx_nic *efx)
 193 {
 194         /* Set the TX and RX LEDs to reflect status and activity, and the
 195          * fault LED off */
 196         xfp_set_led(efx, SFE4002_TX_LED,
 197                     QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
 198         xfp_set_led(efx, SFE4002_RX_LED,
 199                     QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
 200         xfp_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
 201 }
 202
 203 static void sfe4002_set_id_led(struct efx_nic *efx, bool state)
 204 {
 205         xfp_set_led(efx, SFE4002_FAULT_LED, state ? QUAKE_LED_ON :
 206                         QUAKE_LED_OFF);
 207 }
 208
 209 static int sfe4002_check_hw(struct efx_nic *efx)
 210 {
 211         /* A0 board rev. 4002s report a temperature fault the whole time
 212          * (bad sensor) so we mask it out. */
 213         unsigned alarm_mask =
 214                 (efx->board_info.major == 0 && efx->board_info.minor == 0) ?
 215                 ~LM87_ALARM_TEMP_EXT1 : ~0;
 216
 217         return efx_check_lm87(efx, alarm_mask);
 218 }
 219
 220 static int sfe4002_init(struct efx_nic *efx)
 221 {
 222         int rc = efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
 223         if (rc)
 224                 return rc;
 225         efx->board_info.monitor = sfe4002_check_hw;
 226         efx->board_info.init_leds = sfe4002_init_leds;
 227         efx->board_info.set_id_led = sfe4002_set_id_led;
 228         efx->board_info.blink = board_blink;
 229         efx->board_info.fini = efx_fini_lm87;
 230         return 0;
 231 }
 232
 233 /*****************************************************************************
 234  * Support for the SFN4112F
 235  *
 236  */
 237 static u8 sfn4112f_lm87_channel = 0x03; /* use AIN not FAN inputs */
 238
 239 static const u8 sfn4112f_lm87_regs[] = {
 240         LM87_IN_LIMITS(0, 0x83, 0x91),          /* 2.5V:  1.8V +/- 5% */
 241         LM87_IN_LIMITS(1, 0x51, 0x5a),          /* Vccp1: 1.2V +/- 5% */
 242         LM87_IN_LIMITS(2, 0xb6, 0xca),          /* 3.3V:  3.3V +/- 5% */
 243         LM87_IN_LIMITS(4, 0xb0, 0xe0),          /* 12V:   11-14V */
 244         LM87_IN_LIMITS(5, 0x44, 0x4b),          /* Vccp2: 1.0V +/- 5% */
 245         LM87_AIN_LIMITS(1, 0x91, 0xa1),         /* AIN2:  1.5V +/- 5% */
 246         LM87_TEMP_INT_LIMITS(10, 60),           /* board */
 247         LM87_TEMP_EXT1_LIMITS(10, 70),          /* Falcon */
 248         0
 249 };
 250
 251 static struct i2c_board_info sfn4112f_hwmon_info = {
 252         I2C_BOARD_INFO("lm87", 0x2e),
 253         .platform_data  = &sfn4112f_lm87_channel,
 254 };
 255
 256 #define SFN4112F_ACT_LED        0
 257 #define SFN4112F_LINK_LED       1
 258
 259 static void sfn4112f_init_leds(struct efx_nic *efx)
 260 {
 261         xfp_set_led(efx, SFN4112F_ACT_LED,
 262                     QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACT);
 263         xfp_set_led(efx, SFN4112F_LINK_LED,
 264                     QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT);
 265 }
 266
 267 static void sfn4112f_set_id_led(struct efx_nic *efx, bool state)
 268 {
 269         xfp_set_led(efx, SFN4112F_LINK_LED,
 270                     state ? QUAKE_LED_ON : QUAKE_LED_OFF);
 271 }
 272
 273 static int sfn4112f_check_hw(struct efx_nic *efx)
 274 {
 275         /* Mask out unused sensors */
 276         return efx_check_lm87(efx, ~0x48);
 277 }
 278
 279 static int sfn4112f_init(struct efx_nic *efx)
 280 {
 281         int rc = efx_init_lm87(efx, &sfn4112f_hwmon_info, sfn4112f_lm87_regs);
 282         if (rc)
 283                 return rc;
 284         efx->board_info.monitor = sfn4112f_check_hw;
 285         efx->board_info.init_leds = sfn4112f_init_leds;
 286         efx->board_info.set_id_led = sfn4112f_set_id_led;
 287         efx->board_info.blink = board_blink;
 288         efx->board_info.fini = efx_fini_lm87;
 289         return 0;
 290 }
 291
 292 /* This will get expanded as board-specific details get moved out of the
 293  * PHY drivers. */
 294 struct falcon_board_data {
 295         u8 type;
 296         const char *ref_model;
 297         const char *gen_type;
 298         int (*init) (struct efx_nic *nic);
 299 };
 300
 301
 302 static struct falcon_board_data board_data[] = {
 303         { FALCON_BOARD_SFE4001, "SFE4001", "10GBASE-T adapter", sfe4001_init },
 304         { FALCON_BOARD_SFE4002, "SFE4002", "XFP adapter", sfe4002_init },
 305         { FALCON_BOARD_SFN4111T, "SFN4111T", "100/1000/10GBASE-T adapter",
 306           sfn4111t_init },
 307         { FALCON_BOARD_SFN4112F, "SFN4112F", "SFP+ adapter",
 308           sfn4112f_init },
 309 };
 310
 311 void falcon_probe_board(struct efx_nic *efx, u16 revision_info)
 312 {
 313         struct falcon_board_data *data = NULL;
 314         int i;
 315
 316         efx->board_info.type = FALCON_BOARD_TYPE(revision_info);
 317         efx->board_info.major = FALCON_BOARD_MAJOR(revision_info);
 318         efx->board_info.minor = FALCON_BOARD_MINOR(revision_info);
 319
 320         for (i = 0; i < ARRAY_SIZE(board_data); i++)
 321                 if (board_data[i].type == efx->board_info.type)
 322                         data = &board_data[i];
 323
 324         if (data) {
 325                 EFX_INFO(efx, "board is %s rev %c%d\n",
 326                          (efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
 327                          ? data->ref_model : data->gen_type,
 328                          'A' + efx->board_info.major, efx->board_info.minor);
 329                 efx->board_info.init = data->init;
 330         } else {
 331                 EFX_ERR(efx, "unknown board type %d\n", efx->board_info.type);
 332         }
 333 }