linux/drivers/net/sfc/falcon_boards.c
Ben Hutchings 8fbca79130 sfc: Remove support for SFN4111T, SFT9001 and Falcon GMAC
SFN4111T never reached production and is not being used for internal
or customer testing.

Since we have no production Falcon boards using the SFT9001 or the
GMAC, remove support for them as well.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-22 13:26:45 -07:00

643 lines
18 KiB
C

/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2007-2009 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 <linux/rtnetlink.h>
#include "net_driver.h"
#include "phy.h"
#include "efx.h"
#include "nic.h"
#include "regs.h"
#include "io.h"
#include "workarounds.h"
/* Macros for unpacking the board revision */
/* The revision info is in host byte order. */
#define FALCON_BOARD_TYPE(_rev) (_rev >> 8)
#define FALCON_BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
#define FALCON_BOARD_MINOR(_rev) (_rev & 0xf)
/* Board types */
#define FALCON_BOARD_SFE4001 0x01
#define FALCON_BOARD_SFE4002 0x02
#define FALCON_BOARD_SFN4112F 0x52
/* Board temperature is about 15°C above ambient when air flow is
* limited. */
#define FALCON_BOARD_TEMP_BIAS 15
/* SFC4000 datasheet says: 'The maximum permitted junction temperature
* is 125°C; the thermal design of the environment for the SFC4000
* should aim to keep this well below 100°C.' */
#define FALCON_JUNC_TEMP_MAX 90
/*****************************************************************************
* 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 falcon_board *board = falcon_board(efx);
struct i2c_client *client = i2c_new_device(&board->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;
}
board->hwmon_client = client;
return 0;
err:
i2c_unregister_device(client);
return rc;
}
static void efx_fini_lm87(struct efx_nic *efx)
{
i2c_unregister_device(falcon_board(efx)->hwmon_client);
}
static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
{
struct i2c_client *client = falcon_board(efx)->hwmon_client;
s32 alarms1, alarms2;
/* If link is up then do not monitor temperature */
if (EFX_WORKAROUND_7884(efx) && efx->link_state.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) {
netif_err(efx, hw, efx->net_dev,
"LM87 detected a hardware failure (status %02x:%02x)"
"%s%s%s\n",
alarms1, alarms2,
(alarms1 & LM87_ALARM_TEMP_INT) ?
"; board is overheating" : "",
(alarms1 & LM87_ALARM_TEMP_EXT1) ?
"; controller is overheating" : "",
(alarms1 & ~(LM87_ALARM_TEMP_INT | LM87_ALARM_TEMP_EXT1)
|| alarms2) ?
"; electrical fault" : "");
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 SFE4001 NIC.
*
* The SFE4001 does not power-up fully at reset due to its high power
* consumption. We control its power via a PCA9539 I/O expander.
* It also has a MAX6647 temperature monitor which we expose to
* the lm90 driver.
*
* This also provides minimal support for reflashing the PHY, which is
* initiated by resetting it with the FLASH_CFG_1 pin pulled down.
* On SFE4001 rev A2 and later this is connected to the 3V3X output of
* the IO-expander.
* We represent reflash mode as PHY_MODE_SPECIAL and make it mutually
* exclusive with the network device being open.
*/
/**************************************************************************
* Support for I2C IO Expander device on SFE4001
*/
#define PCA9539 0x74
#define P0_IN 0x00
#define P0_OUT 0x02
#define P0_INVERT 0x04
#define P0_CONFIG 0x06
#define P0_EN_1V0X_LBN 0
#define P0_EN_1V0X_WIDTH 1
#define P0_EN_1V2_LBN 1
#define P0_EN_1V2_WIDTH 1
#define P0_EN_2V5_LBN 2
#define P0_EN_2V5_WIDTH 1
#define P0_EN_3V3X_LBN 3
#define P0_EN_3V3X_WIDTH 1
#define P0_EN_5V_LBN 4
#define P0_EN_5V_WIDTH 1
#define P0_SHORTEN_JTAG_LBN 5
#define P0_SHORTEN_JTAG_WIDTH 1
#define P0_X_TRST_LBN 6
#define P0_X_TRST_WIDTH 1
#define P0_DSP_RESET_LBN 7
#define P0_DSP_RESET_WIDTH 1
#define P1_IN 0x01
#define P1_OUT 0x03
#define P1_INVERT 0x05
#define P1_CONFIG 0x07
#define P1_AFE_PWD_LBN 0
#define P1_AFE_PWD_WIDTH 1
#define P1_DSP_PWD25_LBN 1
#define P1_DSP_PWD25_WIDTH 1
#define P1_RESERVED_LBN 2
#define P1_RESERVED_WIDTH 2
#define P1_SPARE_LBN 4
#define P1_SPARE_WIDTH 4
/* Temperature Sensor */
#define MAX664X_REG_RSL 0x02
#define MAX664X_REG_WLHO 0x0B
static void sfe4001_poweroff(struct efx_nic *efx)
{
struct i2c_client *ioexp_client = falcon_board(efx)->ioexp_client;
struct i2c_client *hwmon_client = falcon_board(efx)->hwmon_client;
/* Turn off all power rails and disable outputs */
i2c_smbus_write_byte_data(ioexp_client, P0_OUT, 0xff);
i2c_smbus_write_byte_data(ioexp_client, P1_CONFIG, 0xff);
i2c_smbus_write_byte_data(ioexp_client, P0_CONFIG, 0xff);
/* Clear any over-temperature alert */
i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
}
static int sfe4001_poweron(struct efx_nic *efx)
{
struct i2c_client *ioexp_client = falcon_board(efx)->ioexp_client;
struct i2c_client *hwmon_client = falcon_board(efx)->hwmon_client;
unsigned int i, j;
int rc;
u8 out;
/* Clear any previous over-temperature alert */
rc = i2c_smbus_read_byte_data(hwmon_client, MAX664X_REG_RSL);
if (rc < 0)
return rc;
/* Enable port 0 and port 1 outputs on IO expander */
rc = i2c_smbus_write_byte_data(ioexp_client, P0_CONFIG, 0x00);
if (rc)
return rc;
rc = i2c_smbus_write_byte_data(ioexp_client, P1_CONFIG,
0xff & ~(1 << P1_SPARE_LBN));
if (rc)
goto fail_on;
/* If PHY power is on, turn it all off and wait 1 second to
* ensure a full reset.
*/
rc = i2c_smbus_read_byte_data(ioexp_client, P0_OUT);
if (rc < 0)
goto fail_on;
out = 0xff & ~((0 << P0_EN_1V2_LBN) | (0 << P0_EN_2V5_LBN) |
(0 << P0_EN_3V3X_LBN) | (0 << P0_EN_5V_LBN) |
(0 << P0_EN_1V0X_LBN));
if (rc != out) {
netif_info(efx, hw, efx->net_dev, "power-cycling PHY\n");
rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
if (rc)
goto fail_on;
schedule_timeout_uninterruptible(HZ);
}
for (i = 0; i < 20; ++i) {
/* Turn on 1.2V, 2.5V, 3.3V and 5V power rails */
out = 0xff & ~((1 << P0_EN_1V2_LBN) | (1 << P0_EN_2V5_LBN) |
(1 << P0_EN_3V3X_LBN) | (1 << P0_EN_5V_LBN) |
(1 << P0_X_TRST_LBN));
if (efx->phy_mode & PHY_MODE_SPECIAL)
out |= 1 << P0_EN_3V3X_LBN;
rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
if (rc)
goto fail_on;
msleep(10);
/* Turn on 1V power rail */
out &= ~(1 << P0_EN_1V0X_LBN);
rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out);
if (rc)
goto fail_on;
netif_info(efx, hw, efx->net_dev,
"waiting for DSP boot (attempt %d)...\n", i);
/* In flash config mode, DSP does not turn on AFE, so
* just wait 1 second.
*/
if (efx->phy_mode & PHY_MODE_SPECIAL) {
schedule_timeout_uninterruptible(HZ);
return 0;
}
for (j = 0; j < 10; ++j) {
msleep(100);
/* Check DSP has asserted AFE power line */
rc = i2c_smbus_read_byte_data(ioexp_client, P1_IN);
if (rc < 0)
goto fail_on;
if (rc & (1 << P1_AFE_PWD_LBN))
return 0;
}
}
netif_info(efx, hw, efx->net_dev, "timed out waiting for DSP boot\n");
rc = -ETIMEDOUT;
fail_on:
sfe4001_poweroff(efx);
return rc;
}
static ssize_t show_phy_flash_cfg(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
return sprintf(buf, "%d\n", !!(efx->phy_mode & PHY_MODE_SPECIAL));
}
static ssize_t set_phy_flash_cfg(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
enum efx_phy_mode old_mode, new_mode;
int err;
rtnl_lock();
old_mode = efx->phy_mode;
if (count == 0 || *buf == '0')
new_mode = old_mode & ~PHY_MODE_SPECIAL;
else
new_mode = PHY_MODE_SPECIAL;
if (old_mode == new_mode) {
err = 0;
} else if (efx->state != STATE_RUNNING || netif_running(efx->net_dev)) {
err = -EBUSY;
} else {
/* Reset the PHY, reconfigure the MAC and enable/disable
* MAC stats accordingly. */
efx->phy_mode = new_mode;
if (new_mode & PHY_MODE_SPECIAL)
falcon_stop_nic_stats(efx);
err = sfe4001_poweron(efx);
if (!err)
err = efx_reconfigure_port(efx);
if (!(new_mode & PHY_MODE_SPECIAL))
falcon_start_nic_stats(efx);
}
rtnl_unlock();
return err ? err : count;
}
static DEVICE_ATTR(phy_flash_cfg, 0644, show_phy_flash_cfg, set_phy_flash_cfg);
static void sfe4001_fini(struct efx_nic *efx)
{
struct falcon_board *board = falcon_board(efx);
netif_info(efx, drv, efx->net_dev, "%s\n", __func__);
device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
sfe4001_poweroff(efx);
i2c_unregister_device(board->ioexp_client);
i2c_unregister_device(board->hwmon_client);
}
static int sfe4001_check_hw(struct efx_nic *efx)
{
s32 status;
/* If XAUI link is up then do not monitor */
if (EFX_WORKAROUND_7884(efx) && !efx->xmac_poll_required)
return 0;
/* Check the powered status of the PHY. Lack of power implies that
* the MAX6647 has shut down power to it, probably due to a temp.
* alarm. Reading the power status rather than the MAX6647 status
* directly because the later is read-to-clear and would thus
* start to power up the PHY again when polled, causing us to blip
* the power undesirably.
* We know we can read from the IO expander because we did
* it during power-on. Assume failure now is bad news. */
status = i2c_smbus_read_byte_data(falcon_board(efx)->ioexp_client, P1_IN);
if (status >= 0 &&
(status & ((1 << P1_AFE_PWD_LBN) | (1 << P1_DSP_PWD25_LBN))) != 0)
return 0;
/* Use board power control, not PHY power control */
sfe4001_poweroff(efx);
efx->phy_mode = PHY_MODE_OFF;
return (status < 0) ? -EIO : -ERANGE;
}
static struct i2c_board_info sfe4001_hwmon_info = {
I2C_BOARD_INFO("max6647", 0x4e),
};
/* This board uses an I2C expander to provider power to the PHY, which needs to
* be turned on before the PHY can be used.
* Context: Process context, rtnl lock held
*/
static int sfe4001_init(struct efx_nic *efx)
{
struct falcon_board *board = falcon_board(efx);
int rc;
#if defined(CONFIG_SENSORS_LM90) || defined(CONFIG_SENSORS_LM90_MODULE)
board->hwmon_client =
i2c_new_device(&board->i2c_adap, &sfe4001_hwmon_info);
#else
board->hwmon_client =
i2c_new_dummy(&board->i2c_adap, sfe4001_hwmon_info.addr);
#endif
if (!board->hwmon_client)
return -EIO;
/* Raise board/PHY high limit from 85 to 90 degrees Celsius */
rc = i2c_smbus_write_byte_data(board->hwmon_client,
MAX664X_REG_WLHO, 90);
if (rc)
goto fail_hwmon;
board->ioexp_client = i2c_new_dummy(&board->i2c_adap, PCA9539);
if (!board->ioexp_client) {
rc = -EIO;
goto fail_hwmon;
}
if (efx->phy_mode & PHY_MODE_SPECIAL) {
/* PHY won't generate a 156.25 MHz clock and MAC stats fetch
* will fail. */
falcon_stop_nic_stats(efx);
}
rc = sfe4001_poweron(efx);
if (rc)
goto fail_ioexp;
rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
if (rc)
goto fail_on;
netif_info(efx, hw, efx->net_dev, "PHY is powered on\n");
return 0;
fail_on:
sfe4001_poweroff(efx);
fail_ioexp:
i2c_unregister_device(board->ioexp_client);
fail_hwmon:
i2c_unregister_device(board->hwmon_client);
return rc;
}
/*****************************************************************************
* 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, 0x7c, 0x99), /* 2.5V: 1.8V +/- 10% */
LM87_IN_LIMITS(1, 0x4c, 0x5e), /* Vccp1: 1.2V +/- 10% */
LM87_IN_LIMITS(2, 0xac, 0xd4), /* 3.3V: 3.3V +/- 10% */
LM87_IN_LIMITS(3, 0xac, 0xd4), /* 5V: 5.0V +/- 10% */
LM87_IN_LIMITS(4, 0xac, 0xe0), /* 12V: 10.8-14V */
LM87_IN_LIMITS(5, 0x3f, 0x4f), /* Vccp2: 1.0V +/- 10% */
LM87_AIN_LIMITS(0, 0x98, 0xbb), /* AIN1: 1.66V +/- 10% */
LM87_AIN_LIMITS(1, 0x8a, 0xa9), /* AIN2: 1.5V +/- 10% */
LM87_TEMP_INT_LIMITS(0, 80 + FALCON_BOARD_TEMP_BIAS),
LM87_TEMP_EXT1_LIMITS(0, FALCON_JUNC_TEMP_MAX),
0
};
static struct i2c_board_info sfe4002_hwmon_info = {
I2C_BOARD_INFO("lm87", 0x2e),
.platform_data = &sfe4002_lm87_channel,
};
/****************************************************************************/
/* 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 void sfe4002_init_phy(struct efx_nic *efx)
{
/* Set the TX and RX LEDs to reflect status and activity, and the
* fault LED off */
falcon_qt202x_set_led(efx, SFE4002_TX_LED,
QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
falcon_qt202x_set_led(efx, SFE4002_RX_LED,
QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
falcon_qt202x_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
}
static void sfe4002_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
{
falcon_qt202x_set_led(
efx, SFE4002_FAULT_LED,
(mode == EFX_LED_ON) ? QUAKE_LED_ON : QUAKE_LED_OFF);
}
static int sfe4002_check_hw(struct efx_nic *efx)
{
struct falcon_board *board = falcon_board(efx);
/* A0 board rev. 4002s report a temperature fault the whole time
* (bad sensor) so we mask it out. */
unsigned alarm_mask =
(board->major == 0 && board->minor == 0) ?
~LM87_ALARM_TEMP_EXT1 : ~0;
return efx_check_lm87(efx, alarm_mask);
}
static int sfe4002_init(struct efx_nic *efx)
{
return efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
}
/*****************************************************************************
* Support for the SFN4112F
*
*/
static u8 sfn4112f_lm87_channel = 0x03; /* use AIN not FAN inputs */
static const u8 sfn4112f_lm87_regs[] = {
LM87_IN_LIMITS(0, 0x7c, 0x99), /* 2.5V: 1.8V +/- 10% */
LM87_IN_LIMITS(1, 0x4c, 0x5e), /* Vccp1: 1.2V +/- 10% */
LM87_IN_LIMITS(2, 0xac, 0xd4), /* 3.3V: 3.3V +/- 10% */
LM87_IN_LIMITS(4, 0xac, 0xe0), /* 12V: 10.8-14V */
LM87_IN_LIMITS(5, 0x3f, 0x4f), /* Vccp2: 1.0V +/- 10% */
LM87_AIN_LIMITS(1, 0x8a, 0xa9), /* AIN2: 1.5V +/- 10% */
LM87_TEMP_INT_LIMITS(0, 60 + FALCON_BOARD_TEMP_BIAS),
LM87_TEMP_EXT1_LIMITS(0, FALCON_JUNC_TEMP_MAX),
0
};
static struct i2c_board_info sfn4112f_hwmon_info = {
I2C_BOARD_INFO("lm87", 0x2e),
.platform_data = &sfn4112f_lm87_channel,
};
#define SFN4112F_ACT_LED 0
#define SFN4112F_LINK_LED 1
static void sfn4112f_init_phy(struct efx_nic *efx)
{
falcon_qt202x_set_led(efx, SFN4112F_ACT_LED,
QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACT);
falcon_qt202x_set_led(efx, SFN4112F_LINK_LED,
QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT);
}
static void sfn4112f_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
{
int reg;
switch (mode) {
case EFX_LED_OFF:
reg = QUAKE_LED_OFF;
break;
case EFX_LED_ON:
reg = QUAKE_LED_ON;
break;
default:
reg = QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT;
break;
}
falcon_qt202x_set_led(efx, SFN4112F_LINK_LED, reg);
}
static int sfn4112f_check_hw(struct efx_nic *efx)
{
/* Mask out unused sensors */
return efx_check_lm87(efx, ~0x48);
}
static int sfn4112f_init(struct efx_nic *efx)
{
return efx_init_lm87(efx, &sfn4112f_hwmon_info, sfn4112f_lm87_regs);
}
static const struct falcon_board_type board_types[] = {
{
.id = FALCON_BOARD_SFE4001,
.ref_model = "SFE4001",
.gen_type = "10GBASE-T adapter",
.init = sfe4001_init,
.init_phy = efx_port_dummy_op_void,
.fini = sfe4001_fini,
.set_id_led = tenxpress_set_id_led,
.monitor = sfe4001_check_hw,
},
{
.id = FALCON_BOARD_SFE4002,
.ref_model = "SFE4002",
.gen_type = "XFP adapter",
.init = sfe4002_init,
.init_phy = sfe4002_init_phy,
.fini = efx_fini_lm87,
.set_id_led = sfe4002_set_id_led,
.monitor = sfe4002_check_hw,
},
{
.id = FALCON_BOARD_SFN4112F,
.ref_model = "SFN4112F",
.gen_type = "SFP+ adapter",
.init = sfn4112f_init,
.init_phy = sfn4112f_init_phy,
.fini = efx_fini_lm87,
.set_id_led = sfn4112f_set_id_led,
.monitor = sfn4112f_check_hw,
},
};
int falcon_probe_board(struct efx_nic *efx, u16 revision_info)
{
struct falcon_board *board = falcon_board(efx);
u8 type_id = FALCON_BOARD_TYPE(revision_info);
int i;
board->major = FALCON_BOARD_MAJOR(revision_info);
board->minor = FALCON_BOARD_MINOR(revision_info);
for (i = 0; i < ARRAY_SIZE(board_types); i++)
if (board_types[i].id == type_id)
board->type = &board_types[i];
if (board->type) {
netif_info(efx, probe, efx->net_dev, "board is %s rev %c%d\n",
(efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
? board->type->ref_model : board->type->gen_type,
'A' + board->major, board->minor);
return 0;
} else {
netif_err(efx, probe, efx->net_dev, "unknown board type %d\n",
type_id);
return -ENODEV;
}
}