sfc: Merge sfe4001.c into falcon_boards.c

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 435 deletions

diff --git a/drivers/net/sfc/sfe4001.c b/drivers/net/sfc/sfe4001.c
deleted file mode 100644
index 28a55047cc92..000000000000
--- a/drivers/net/sfc/sfe4001.c
+++ /dev/null
@@ -1,435 +0,0 @@
-/****************************************************************************
- * Driver for Solarflare Solarstorm network controllers and boards
- * Copyright 2007-2008 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.
- */
-
-/*****************************************************************************
- * Support for the SFE4001 and SFN4111T NICs.
- *
- * 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.
- * Both boards have 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; on the SFN4111T it is connected to Falcon's GPIO3.
- * We represent reflash mode as PHY_MODE_SPECIAL and make it mutually
- * exclusive with the network device being open.
- */
-
-#include <linux/delay.h>
-#include <linux/rtnetlink.h>
-#include "net_driver.h"
-#include "efx.h"
-#include "phy.h"
-#include "boards.h"
-#include "falcon.h"
-#include "falcon_hwdefs.h"
-#include "falcon_io.h"
-#include "mac.h"
-#include "workarounds.h"
-
-/**************************************************************************
- *
- * I2C IO Expander device
- *
- **************************************************************************/
-#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 = efx->board_info.ioexp_client;
-	struct i2c_client *hwmon_client = efx->board_info.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 *hwmon_client = efx->board_info.hwmon_client;
-	struct i2c_client *ioexp_client = efx->board_info.ioexp_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) {
-		EFX_INFO(efx, "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;
-
-		EFX_INFO(efx, "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;
-		}
-	}
-
-	EFX_INFO(efx, "timed out waiting for DSP boot\n");
-	rc = -ETIMEDOUT;
-fail_on:
-	sfe4001_poweroff(efx);
-	return rc;
-}
-
-static int sfn4111t_reset(struct efx_nic *efx)
-{
-	efx_oword_t reg;
-
-	/* GPIO 3 and the GPIO register are shared with I2C, so block that */
-	mutex_lock(&efx->i2c_adap.bus_lock);
-
-	/* Pull RST_N (GPIO 2) low then let it up again, setting the
-	 * FLASH_CFG_1 strap (GPIO 3) appropriately.  Only change the
-	 * output enables; the output levels should always be 0 (low)
-	 * and we rely on external pull-ups. */
-	falcon_read(efx, &reg, GPIO_CTL_REG_KER);
-	EFX_SET_OWORD_FIELD(reg, GPIO2_OEN, true);
-	falcon_write(efx, &reg, GPIO_CTL_REG_KER);
-	msleep(1000);
-	EFX_SET_OWORD_FIELD(reg, GPIO2_OEN, false);
-	EFX_SET_OWORD_FIELD(reg, GPIO3_OEN,
-			    !!(efx->phy_mode & PHY_MODE_SPECIAL));
-	falcon_write(efx, &reg, GPIO_CTL_REG_KER);
-	msleep(1);
-
-	mutex_unlock(&efx->i2c_adap.bus_lock);
-
-	ssleep(1);
-	return 0;
-}
-
-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)
-			efx_stats_disable(efx);
-		if (efx->board_info.type == FALCON_BOARD_SFE4001)
-			err = sfe4001_poweron(efx);
-		else
-			err = sfn4111t_reset(efx);
-		efx_reconfigure_port(efx);
-		if (!(new_mode & PHY_MODE_SPECIAL))
-			efx_stats_enable(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)
-{
-	EFX_INFO(efx, "%s\n", __func__);
-
-	device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
-	sfe4001_poweroff(efx);
-	i2c_unregister_device(efx->board_info.ioexp_client);
-	i2c_unregister_device(efx->board_info.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->mac_up)
-		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(efx->board_info.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
- */
-int sfe4001_init(struct efx_nic *efx)
-{
-	int rc;
-
-#if defined(CONFIG_SENSORS_LM90) || defined(CONFIG_SENSORS_LM90_MODULE)
-	efx->board_info.hwmon_client =
-		i2c_new_device(&efx->i2c_adap, &sfe4001_hwmon_info);
-#else
-	efx->board_info.hwmon_client =
-		i2c_new_dummy(&efx->i2c_adap, sfe4001_hwmon_info.addr);
-#endif
-	if (!efx->board_info.hwmon_client)
-		return -EIO;
-
-	/* Raise board/PHY high limit from 85 to 90 degrees Celsius */
-	rc = i2c_smbus_write_byte_data(efx->board_info.hwmon_client,
-				       MAX664X_REG_WLHO, 90);
-	if (rc)
-		goto fail_hwmon;
-
-	efx->board_info.ioexp_client = i2c_new_dummy(&efx->i2c_adap, PCA9539);
-	if (!efx->board_info.ioexp_client) {
-		rc = -EIO;
-		goto fail_hwmon;
-	}
-
-	/* 10Xpress has fixed-function LED pins, so there is no board-specific
-	 * blink code. */
-	efx->board_info.blink = tenxpress_phy_blink;
-
-	efx->board_info.monitor = sfe4001_check_hw;
-	efx->board_info.fini = sfe4001_fini;
-
-	if (efx->phy_mode & PHY_MODE_SPECIAL) {
-		/* PHY won't generate a 156.25 MHz clock and MAC stats fetch
-		 * will fail. */
-		efx_stats_disable(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;
-
-	EFX_INFO(efx, "PHY is powered on\n");
-	return 0;
-
-fail_on:
-	sfe4001_poweroff(efx);
-fail_ioexp:
-	i2c_unregister_device(efx->board_info.ioexp_client);
-fail_hwmon:
-	i2c_unregister_device(efx->board_info.hwmon_client);
-	return rc;
-}
-
-static int sfn4111t_check_hw(struct efx_nic *efx)
-{
-	s32 status;
-
-	/* If XAUI link is up then do not monitor */
-	if (EFX_WORKAROUND_7884(efx) && efx->mac_up)
-		return 0;
-
-	/* Test LHIGH, RHIGH, FAULT, EOT and IOT alarms */
-	status = i2c_smbus_read_byte_data(efx->board_info.hwmon_client,
-					  MAX664X_REG_RSL);
-	if (status < 0)
-		return -EIO;
-	if (status & 0x57)
-		return -ERANGE;
-	return 0;
-}
-
-static void sfn4111t_fini(struct efx_nic *efx)
-{
-	EFX_INFO(efx, "%s\n", __func__);
-
-	device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
-	i2c_unregister_device(efx->board_info.hwmon_client);
-}
-
-static struct i2c_board_info sfn4111t_a0_hwmon_info = {
-	I2C_BOARD_INFO("max6647", 0x4e),
-};
-
-static struct i2c_board_info sfn4111t_r5_hwmon_info = {
-	I2C_BOARD_INFO("max6646", 0x4d),
-};
-
-int sfn4111t_init(struct efx_nic *efx)
-{
-	int i = 0;
-	int rc;
-
-	efx->board_info.hwmon_client =
-		i2c_new_device(&efx->i2c_adap,
-			       (efx->board_info.minor < 5) ?
-			       &sfn4111t_a0_hwmon_info :
-			       &sfn4111t_r5_hwmon_info);
-	if (!efx->board_info.hwmon_client)
-		return -EIO;
-
-	efx->board_info.blink = tenxpress_phy_blink;
-	efx->board_info.monitor = sfn4111t_check_hw;
-	efx->board_info.fini = sfn4111t_fini;
-
-	rc = device_create_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
-	if (rc)
-		goto fail_hwmon;
-
-	do {
-		if (efx->phy_mode & PHY_MODE_SPECIAL) {
-			/* PHY may not generate a 156.25 MHz clock and MAC
-			 * stats fetch will fail. */
-			efx_stats_disable(efx);
-			sfn4111t_reset(efx);
-		}
-		rc = sft9001_wait_boot(efx);
-		if (rc == 0)
-			return 0;
-		efx->phy_mode = PHY_MODE_SPECIAL;
-	} while (rc == -EINVAL && ++i < 2);
-
-	device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg);
-fail_hwmon:
-	i2c_unregister_device(efx->board_info.hwmon_client);
-	return rc;
-}