/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2007 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#include "net_driver.h"
#include "phy.h"
#include "boards.h"
#include "efx.h"
#include "workarounds.h"
/* Macros for unpacking the board revision */
/* The revision info is in host byte order. */
#define BOARD_TYPE(_rev) (_rev >> 8)
#define BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
#define BOARD_MINOR(_rev) (_rev & 0xf)
/* Blink support. If the PHY has no auto-blink mode so we hang it off a timer */
#define BLINK_INTERVAL (HZ/2)
static void blink_led_timer(unsigned long context)
{
struct efx_nic *efx = (struct efx_nic *)context;
struct efx_blinker *bl = &efx->board_info.blinker;
efx->board_info.set_fault_led(efx, bl->state);
bl->state = !bl->state;
if (bl->resubmit)
mod_timer(&bl->timer, jiffies + BLINK_INTERVAL);
}
static void board_blink(struct efx_nic *efx, bool blink)
{
struct efx_blinker *blinker = &efx->board_info.blinker;
/* The rtnl mutex serialises all ethtool ioctls, so
* nothing special needs doing here. */
if (blink) {
blinker->resubmit = true;
blinker->state = false;
setup_timer(&blinker->timer, blink_led_timer,
(unsigned long)efx);
mod_timer(&blinker->timer, jiffies + BLINK_INTERVAL);
} else {
blinker->resubmit = false;
if (blinker->timer.function)
del_timer_sync(&blinker->timer);
efx->board_info.set_fault_led(efx, false);
}
}
/*****************************************************************************
* Support for LM87 sensor chip used on several boards
*/
#define LM87_REG_ALARMS1 0x41
#define LM87_REG_ALARMS2 0x42
#define LM87_IN_LIMITS(nr, _min, _max) \
0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
#define LM87_AIN_LIMITS(nr, _min, _max) \
0x3B + (nr), _max, 0x1A + (nr), _min
#define LM87_TEMP_INT_LIMITS(_min, _max) \
0x39, _max, 0x3A, _min
#define LM87_TEMP_EXT1_LIMITS(_min, _max) \
0x37, _max, 0x38, _min
#define LM87_ALARM_TEMP_INT 0x10
#define LM87_ALARM_TEMP_EXT1 0x20
#if defined(CONFIG_SENSORS_LM87) || defined(CONFIG_SENSORS_LM87_MODULE)
static int efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
const u8 *reg_values)
{
struct i2c_client *client = i2c_new_device(&efx->i2c_adap, info);
int rc;
if (!client)
return -EIO;
while (*reg_values) {
u8 reg = *reg_values++;
u8 value = *reg_values++;
rc = i2c_smbus_write_byte_data(client, reg, value);
if (rc)
goto err;
}
efx->board_info.hwmon_client = client;
return 0;
err:
i2c_unregister_device(client);
return rc;
}
static void efx_fini_lm87(struct efx_nic *efx)
{
i2c_unregister_device(efx->board_info.hwmon_client);
}
static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
{
struct i2c_client *client = efx->board_info.hwmon_client;
s32 alarms1, alarms2;
/* If link is up then do not monitor temperature */
if (EFX_WORKAROUND_7884(efx) && efx->link_up)
return 0;
alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
if (alarms1 < 0)
return alarms1;
if (alarms2 < 0)
return alarms2;
alarms1 &= mask;
alarms2 &= mask >> 8;
if (alarms1 || alarms2) {
EFX_ERR(efx,
"LM87 detected a hardware failure (status %02x:%02x)"
"%s%s\n",
alarms1, alarms2,
(alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
(alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
return -ERANGE;
}
return 0;
}
#else /* !CONFIG_SENSORS_LM87 */
static inline int
efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
const u8 *reg_values)
{
return 0;
}
static inline void efx_fini_lm87(struct efx_nic *efx)
{
}
static inline int efx_check_lm87(struct efx_nic *efx, unsigned mask)
{
return 0;
}
#endif /* CONFIG_SENSORS_LM87 */
/*****************************************************************************
* Support for the SFE4002
*
*/
static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
static const u8 sfe4002_lm87_regs[] = {
LM87_IN_LIMITS(0, 0x83, 0x91), /* 2.5V: 1.8V +/- 5% */
LM87_IN_LIMITS(1, 0x51, 0x5a), /* Vccp1: 1.2V +/- 5% */
LM87_IN_LIMITS(2, 0xb6, 0xca), /* 3.3V: 3.3V +/- 5% */
LM87_IN_LIMITS(3, 0xb0, 0xc9), /* 5V: 4.6-5.2V */
LM87_IN_LIMITS(4, 0xb0, 0xe0), /* 12V: 11-14V */
LM87_IN_LIMITS(5, 0x44, 0x4b), /* Vccp2: 1.0V +/- 5% */
LM87_AIN_LIMITS(0, 0xa0, 0xb2), /* AIN1: 1.66V +/- 5% */
LM87_AIN_LIMITS(1, 0x91, 0xa1), /* AIN2: 1.5V +/- 5% */
LM87_TEMP_INT_LIMITS(10, 60), /* board */
LM87_TEMP_EXT1_LIMITS(10, 70), /* Falcon */
0
};
static struct i2c_board_info sfe4002_hwmon_info = {
I2C_BOARD_INFO("lm87", 0x2e),
.platform_data = &sfe4002_lm87_channel,
.irq = -1,
};
/****************************************************************************/
/* LED allocations. Note that on rev A0 boards the schematic and the reality
* differ: red and green are swapped. Below is the fixed (A1) layout (there
* are only 3 A0 boards in existence, so no real reason to make this
* conditional).
*/
#define SFE4002_FAULT_LED (2) /* Red */
#define SFE4002_RX_LED (0) /* Green */
#define SFE4002_TX_LED (1) /* Amber */
static int sfe4002_init_leds(struct efx_nic *efx)
{
/* Set the TX and RX LEDs to reflect status and activity, and the
* fault LED off */
xfp_set_led(efx, SFE4002_TX_LED,
QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
xfp_set_led(efx, SFE4002_RX_LED,
QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
xfp_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
efx->board_info.blinker.led_num = SFE4002_FAULT_LED;
return 0;
}
static void sfe4002_fault_led(struct efx_nic *efx, bool state)
{
xfp_set_led(efx, SFE4002_FAULT_LED, state ? QUAKE_LED_ON :
QUAKE_LED_OFF);
}
static int sfe4002_check_hw(struct efx_nic *efx)
{
/* A0 board rev. 4002s report a temperature fault the whole time
* (bad sensor) so we mask it out. */
unsigned alarm_mask =
(efx->board_info.major == 0 && efx->board_info.minor == 0) ?
~LM87_ALARM_TEMP_EXT1 : ~0;
return efx_check_lm87(efx, alarm_mask);
}
static int sfe4002_init(struct efx_nic *efx)
{
int rc = efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
if (rc)
return rc;
efx->board_info.monitor = sfe4002_check_hw;
efx->board_info.init_leds = sfe4002_init_leds;
efx->board_info.set_fault_led = sfe4002_fault_led;
efx->board_info.blink = board_blink;
efx->board_info.fini = efx_fini_lm87;
return 0;
}
/* This will get expanded as board-specific details get moved out of the
* PHY drivers. */
struct efx_board_data {
const char *ref_model;
const char *gen_type;
int (*init) (struct efx_nic *nic);
};
static int dummy_init(struct efx_nic *nic)
{
return 0;
}
static struct efx_board_data board_data[] = {
[EFX_BOARD_INVALID] =
{NULL, NULL, dummy_init},
[EFX_BOARD_SFE4001] =
{"SFE4001", "10GBASE-T adapter", sfe4001_init},
[EFX_BOARD_SFE4002] =
{"SFE4002", "XFP adapter", sfe4002_init},
};
int efx_set_board_info(struct efx_nic *efx, u16 revision_info)
{
int rc = 0;
struct efx_board_data *data;
if (BOARD_TYPE(revision_info) >= EFX_BOARD_MAX) {
EFX_ERR(efx, "squashing unknown board type %d\n",
BOARD_TYPE(revision_info));
revision_info = 0;
}
if (BOARD_TYPE(revision_info) == 0) {
efx->board_info.major = 0;
efx->board_info.minor = 0;
/* For early boards that don't have revision info. there is
* only 1 board for each PHY type, so we can work it out, with
* the exception of the PHY-less boards. */
switch (efx->phy_type) {
case PHY_TYPE_10XPRESS:
efx->board_info.type = EFX_BOARD_SFE4001;
break;
case PHY_TYPE_XFP:
efx->board_info.type = EFX_BOARD_SFE4002;
break;
default:
efx->board_info.type = 0;
break;
}
} else {
efx->board_info.type = BOARD_TYPE(revision_info);
efx->board_info.major = BOARD_MAJOR(revision_info);
efx->board_info.minor = BOARD_MINOR(revision_info);
}
data = &board_data[efx->board_info.type];
/* Report the board model number or generic type for recognisable
* boards. */
if (efx->board_info.type != 0)
EFX_INFO(efx, "board is %s rev %c%d\n",
(efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
? data->ref_model : data->gen_type,
'A' + efx->board_info.major, efx->board_info.minor);
efx->board_info.init = data->init;
return rc;
}
