sfc-y += efx.o falcon.o tx.o rx.o falcon_gmac.o \
falcon_xmac.o selftest.o ethtool.o xfp_phy.o \
- mdio_10g.o tenxpress.o falcon_boards.o sfe4001.o
+ mdio_10g.o tenxpress.o falcon_boards.o
sfc-$(CONFIG_SFC_MTD) += mtd.o
obj-$(CONFIG_SFC) += sfc.o
#ifndef EFX_BOARDS_H
#define EFX_BOARDS_H
-#define FALCON_BOARD_SFE4001 0x01
-
extern void falcon_probe_board(struct efx_nic *efx, u16 revision_info);
-/* SFE4001 (10GBASE-T) */
-extern int sfe4001_init(struct efx_nic *efx);
-/* SFN4111T (100/1000/10GBASE-T) */
-extern int sfn4111t_init(struct efx_nic *efx);
-
#endif
* by the Free Software Foundation, incorporated herein by reference.
*/
+#include <linux/rtnetlink.h>
+
#include "net_driver.h"
#include "phy.h"
#include "boards.h"
#include "efx.h"
+#include "falcon.h"
+#include "falcon_hwdefs.h"
+#include "falcon_io.h"
#include "workarounds.h"
/* Macros for unpacking the board revision */
#define FALCON_BOARD_MINOR(_rev) (_rev & 0xf)
/* Board types */
+#define FALCON_BOARD_SFE4001 0x01
#define FALCON_BOARD_SFE4002 0x02
#define FALCON_BOARD_SFN4111T 0x51
#define FALCON_BOARD_SFN4112F 0x52
#endif /* CONFIG_SENSORS_LM87 */
/*****************************************************************************
+ * 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.
+ */
+
+/**************************************************************************
+ * Support for I2C IO Expander device on SFE40001
+ */
+#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, ®, GPIO_CTL_REG_KER);
+ EFX_SET_OWORD_FIELD(reg, GPIO2_OEN, true);
+ falcon_write(efx, ®, 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, ®, 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
+ */
+static 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),
+};
+
+static 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;
+}
+
+/*****************************************************************************
* Support for the SFE4002
*
*/
+++ /dev/null
-/****************************************************************************
- * 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, ®, GPIO_CTL_REG_KER);
- EFX_SET_OWORD_FIELD(reg, GPIO2_OEN, true);
- falcon_write(efx, ®, 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, ®, 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;
-}
projects / platform / upstream / kernel-adaptation-pc.git / commitdiff