diff options
| -rw-r--r-- | drivers/net/sfc/boards.h | 2 | ||||
| -rw-r--r-- | drivers/net/sfc/efx.c | 3 | ||||
| -rw-r--r-- | drivers/net/sfc/falcon_xmac.c | 15 | ||||
| -rw-r--r-- | drivers/net/sfc/mdio_10g.c | 4 | ||||
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 21 | ||||
| -rw-r--r-- | drivers/net/sfc/phy.h | 8 | ||||
| -rw-r--r-- | drivers/net/sfc/sfe4001.c | 186 | ||||
| -rw-r--r-- | drivers/net/sfc/tenxpress.c | 46 | ||||
| -rw-r--r-- | drivers/net/sfc/xfp_phy.c | 9 |
9 files changed, 171 insertions, 123 deletions
diff --git a/drivers/net/sfc/boards.h b/drivers/net/sfc/boards.h index e5e844359ce7..c6e01b64bfb4 100644 --- a/drivers/net/sfc/boards.h +++ b/drivers/net/sfc/boards.h @@ -21,7 +21,5 @@ enum efx_board_type { extern int efx_set_board_info(struct efx_nic *efx, u16 revision_info); extern int sfe4001_init(struct efx_nic *efx); -/* Are we putting the PHY into flash config mode */ -extern unsigned int sfe4001_phy_flash_cfg; #endif diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c index 864095ea5b37..d41a6e34da7d 100644 --- a/drivers/net/sfc/efx.c +++ b/drivers/net/sfc/efx.c @@ -1296,6 +1296,9 @@ static int efx_net_open(struct net_device *net_dev) EFX_LOG(efx, "opening device %s on CPU %d\n", net_dev->name, raw_smp_processor_id()); + if (efx->phy_mode & PHY_MODE_SPECIAL) + return -EBUSY; + efx_start_all(efx); return 0; } diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c index be5a86f0e5cf..5620d9d13925 100644 --- a/drivers/net/sfc/falcon_xmac.c +++ b/drivers/net/sfc/falcon_xmac.c @@ -69,10 +69,6 @@ static int falcon_reset_xmac(struct efx_nic *efx) udelay(10); } - /* This often fails when DSP is disabled, ignore it */ - if (sfe4001_phy_flash_cfg) - return 0; - EFX_ERR(efx, "timed out waiting for XMAC core reset\n"); return -ETIMEDOUT; } @@ -444,7 +440,8 @@ static bool falcon_check_xaui_link_up(struct efx_nic *efx) max_tries = tries; if ((efx->loopback_mode == LOOPBACK_NETWORK) || - (efx->phy_type == PHY_TYPE_NONE)) + (efx->phy_type == PHY_TYPE_NONE) || + efx_phy_mode_disabled(efx->phy_mode)) return false; while (tries) { @@ -471,7 +468,11 @@ void falcon_reconfigure_xmac(struct efx_nic *efx) falcon_deconfigure_mac_wrapper(efx); - efx->tx_disabled = LOOPBACK_INTERNAL(efx); + /* Reconfigure the PHY, disabling transmit in mac level loopback. */ + if (LOOPBACK_INTERNAL(efx)) + efx->phy_mode |= PHY_MODE_TX_DISABLED; + else + efx->phy_mode &= ~PHY_MODE_TX_DISABLED; efx->phy_op->reconfigure(efx); falcon_reconfigure_xgxs_core(efx); @@ -566,7 +567,7 @@ int falcon_check_xmac(struct efx_nic *efx) int rc; if ((efx->loopback_mode == LOOPBACK_NETWORK) || - (efx->phy_type == PHY_TYPE_NONE)) + efx_phy_mode_disabled(efx->phy_mode)) return 0; falcon_mask_status_intr(efx, false); diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c index 406494684bb8..003e48dcb2f3 100644 --- a/drivers/net/sfc/mdio_10g.c +++ b/drivers/net/sfc/mdio_10g.c @@ -172,6 +172,8 @@ bool mdio_clause45_links_ok(struct efx_nic *efx, unsigned int mmd_mask) return true; else if (efx->loopback_mode == LOOPBACK_NETWORK) return false; + else if (efx_phy_mode_disabled(efx->phy_mode)) + return false; else if (efx->loopback_mode == LOOPBACK_PHYXS) mmd_mask &= ~(MDIO_MMDREG_DEVS0_PHYXS | MDIO_MMDREG_DEVS0_PCS | @@ -206,7 +208,7 @@ void mdio_clause45_transmit_disable(struct efx_nic *efx) ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD, MDIO_MMDREG_TXDIS); - if (efx->tx_disabled) + if (efx->phy_mode & PHY_MODE_TX_DISABLED) ctrl2 |= (1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN); else ctrl1 &= ~(1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN); diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index e65d6617beea..df863bcc06f8 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -519,6 +519,23 @@ struct efx_phy_operations { unsigned loopbacks; }; +/** + * @enum efx_phy_mode - PHY operating mode flags + * @PHY_MODE_NORMAL: on and should pass traffic + * @PHY_MODE_TX_DISABLED: on with TX disabled + * @PHY_MODE_SPECIAL: on but will not pass traffic + */ +enum efx_phy_mode { + PHY_MODE_NORMAL = 0, + PHY_MODE_TX_DISABLED = 1, + PHY_MODE_SPECIAL = 8, +}; + +static inline bool efx_phy_mode_disabled(enum efx_phy_mode mode) +{ + return (mode & ~PHY_MODE_TX_DISABLED) != 0; +} + /* * Efx extended statistics * @@ -661,7 +678,7 @@ union efx_multicast_hash { * @phy_op: PHY interface * @phy_data: PHY private data (including PHY-specific stats) * @mii: PHY interface - * @tx_disabled: PHY transmitter turned off + * @phy_mode: PHY operating mode * @link_up: Link status * @link_options: Link options (MII/GMII format) * @n_link_state_changes: Number of times the link has changed state @@ -735,7 +752,7 @@ struct efx_nic { struct efx_phy_operations *phy_op; void *phy_data; struct mii_if_info mii; - bool tx_disabled; + enum efx_phy_mode phy_mode; bool link_up; unsigned int link_options; diff --git a/drivers/net/sfc/phy.h b/drivers/net/sfc/phy.h index 25bd18ec7046..f746536f4ffa 100644 --- a/drivers/net/sfc/phy.h +++ b/drivers/net/sfc/phy.h @@ -15,14 +15,6 @@ */ extern struct efx_phy_operations falcon_tenxpress_phy_ops; -enum tenxpress_state { - TENXPRESS_STATUS_OFF = 0, - TENXPRESS_STATUS_OTEMP = 1, - TENXPRESS_STATUS_NORMAL = 2, -}; - -extern void tenxpress_set_state(struct efx_nic *efx, - enum tenxpress_state state); extern void tenxpress_phy_blink(struct efx_nic *efx, bool blink); extern void tenxpress_crc_err(struct efx_nic *efx); diff --git a/drivers/net/sfc/sfe4001.c b/drivers/net/sfc/sfe4001.c index f9272816437d..d90fab59f83e 100644 --- a/drivers/net/sfc/sfe4001.c +++ b/drivers/net/sfc/sfe4001.c @@ -13,6 +13,7 @@ * the PHY */ #include <linux/delay.h> +#include "net_driver.h" #include "efx.h" #include "phy.h" #include "boards.h" @@ -120,52 +121,15 @@ static void sfe4001_poweroff(struct efx_nic *efx) i2c_smbus_read_byte_data(hwmon_client, RSL); } -static void sfe4001_fini(struct efx_nic *efx) +static int sfe4001_poweron(struct efx_nic *efx) { - EFX_INFO(efx, "%s\n", __func__); - - sfe4001_poweroff(efx); - i2c_unregister_device(efx->board_info.ioexp_client); - i2c_unregister_device(efx->board_info.hwmon_client); -} - -/* The P0_EN_3V3X line on SFE4001 boards (from A2 onward) is connected - * to the FLASH_CFG_1 input on the DSP. We must keep it high at power- - * up to allow writing the flash (done through MDIO from userland). - */ -unsigned int sfe4001_phy_flash_cfg; -module_param_named(phy_flash_cfg, sfe4001_phy_flash_cfg, uint, 0444); -MODULE_PARM_DESC(phy_flash_cfg, - "Force PHY to enter flash configuration mode"); - -/* 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) -{ - struct i2c_client *hwmon_client, *ioexp_client; + 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; efx_dword_t reg; - hwmon_client = i2c_new_dummy(&efx->i2c_adap, MAX6647); - if (!hwmon_client) - return -EIO; - efx->board_info.hwmon_client = hwmon_client; - - ioexp_client = i2c_new_dummy(&efx->i2c_adap, PCA9539); - if (!ioexp_client) { - rc = -EIO; - goto fail_hwmon; - } - efx->board_info.ioexp_client = ioexp_client; - - /* 10Xpress has fixed-function LED pins, so there is no board-specific - * blink code. */ - efx->board_info.blink = tenxpress_phy_blink; - /* Ensure that XGXS and XAUI SerDes are held in reset */ EFX_POPULATE_DWORD_7(reg, XX_PWRDNA_EN, 1, XX_PWRDNB_EN, 1, @@ -177,33 +141,15 @@ int sfe4001_init(struct efx_nic *efx) falcon_xmac_writel(efx, ®, XX_PWR_RST_REG_MAC); udelay(10); - efx->board_info.fini = sfe4001_fini; - - /* Set DSP over-temperature alert threshold */ - EFX_INFO(efx, "DSP cut-out at %dC\n", xgphy_max_temperature); - rc = i2c_smbus_write_byte_data(hwmon_client, WLHO, - xgphy_max_temperature); - if (rc) - goto fail_ioexp; - - /* Read it back and verify */ - rc = i2c_smbus_read_byte_data(hwmon_client, RLHN); - if (rc < 0) - goto fail_ioexp; - if (rc != xgphy_max_temperature) { - rc = -EFAULT; - goto fail_ioexp; - } - /* Clear any previous over-temperature alert */ rc = i2c_smbus_read_byte_data(hwmon_client, RSL); if (rc < 0) - goto fail_ioexp; + 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) - goto fail_ioexp; + return rc; rc = i2c_smbus_write_byte_data(ioexp_client, P1_CONFIG, 0xff & ~(1 << P1_SPARE_LBN)); if (rc) @@ -231,7 +177,7 @@ int sfe4001_init(struct efx_nic *efx) 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 (sfe4001_phy_flash_cfg) + if (efx->phy_mode & PHY_MODE_SPECIAL) out |= 1 << P0_EN_3V3X_LBN; rc = i2c_smbus_write_byte_data(ioexp_client, P0_OUT, out); @@ -250,9 +196,9 @@ int sfe4001_init(struct efx_nic *efx) /* In flash config mode, DSP does not turn on AFE, so * just wait 1 second. */ - if (sfe4001_phy_flash_cfg) { + if (efx->phy_mode & PHY_MODE_SPECIAL) { schedule_timeout_uninterruptible(HZ); - goto done; + return 0; } for (j = 0; j < 10; ++j) { @@ -263,23 +209,127 @@ int sfe4001_init(struct efx_nic *efx) if (rc < 0) goto fail_on; if (rc & (1 << P1_AFE_PWD_LBN)) - goto done; + return 0; } } EFX_INFO(efx, "timed out waiting for DSP boot\n"); rc = -ETIMEDOUT; - goto fail_on; +fail_on: + sfe4001_poweroff(efx); + return rc; +} + +/* On SFE4001 rev A2 and later, we can control the FLASH_CFG_1 pin + * using the 3V3X output of the IO-expander. Allow the user to set + * this when the device is stopped, and keep it stopped then. + */ + +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 { + efx->phy_mode = new_mode; + err = sfe4001_poweron(efx); + efx_reconfigure_port(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); +} + +/* 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) +{ + struct i2c_client *hwmon_client; + int rc; + + hwmon_client = i2c_new_dummy(&efx->i2c_adap, MAX6647); + if (!hwmon_client) + return -EIO; + efx->board_info.hwmon_client = hwmon_client; + + /* Set DSP over-temperature alert threshold */ + EFX_INFO(efx, "DSP cut-out at %dC\n", xgphy_max_temperature); + rc = i2c_smbus_write_byte_data(hwmon_client, WLHO, + xgphy_max_temperature); + if (rc) + goto fail_ioexp; + + /* Read it back and verify */ + rc = i2c_smbus_read_byte_data(hwmon_client, RLHN); + if (rc < 0) + goto fail_ioexp; + if (rc != xgphy_max_temperature) { + rc = -EFAULT; + goto fail_ioexp; + } + + 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.fini = sfe4001_fini; + + 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; -done: EFX_INFO(efx, "PHY is powered on\n"); return 0; fail_on: sfe4001_poweroff(efx); fail_ioexp: - i2c_unregister_device(ioexp_client); + i2c_unregister_device(efx->board_info.ioexp_client); fail_hwmon: - i2c_unregister_device(hwmon_client); + i2c_unregister_device(hwmon_client); return rc; } diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c index b92b24bba9e8..499e127f6dd5 100644 --- a/drivers/net/sfc/tenxpress.c +++ b/drivers/net/sfc/tenxpress.c @@ -119,27 +119,12 @@ MODULE_PARM_DESC(crc_error_reset_threshold, "Max number of CRC errors before XAUI reset"); struct tenxpress_phy_data { - enum tenxpress_state state; enum efx_loopback_mode loopback_mode; atomic_t bad_crc_count; - bool tx_disabled; + enum efx_phy_mode phy_mode; int bad_lp_tries; }; -static int tenxpress_state_is(struct efx_nic *efx, int state) -{ - struct tenxpress_phy_data *phy_data = efx->phy_data; - return (phy_data != NULL) && (state == phy_data->state); -} - -void tenxpress_set_state(struct efx_nic *efx, - enum tenxpress_state state) -{ - struct tenxpress_phy_data *phy_data = efx->phy_data; - if (phy_data != NULL) - phy_data->state = state; -} - void tenxpress_crc_err(struct efx_nic *efx) { struct tenxpress_phy_data *phy_data = efx->phy_data; @@ -214,15 +199,12 @@ static int tenxpress_phy_init(struct efx_nic *efx) if (!phy_data) return -ENOMEM; efx->phy_data = phy_data; + phy_data->phy_mode = efx->phy_mode; - tenxpress_set_state(efx, TENXPRESS_STATUS_NORMAL); - - if (!sfe4001_phy_flash_cfg) { - rc = mdio_clause45_wait_reset_mmds(efx, - TENXPRESS_REQUIRED_DEVS); - if (rc < 0) - goto fail; - } + rc = mdio_clause45_wait_reset_mmds(efx, + TENXPRESS_REQUIRED_DEVS); + if (rc < 0) + goto fail; rc = mdio_clause45_check_mmds(efx, TENXPRESS_REQUIRED_DEVS, 0); if (rc < 0) @@ -370,13 +352,16 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx) bool loop_change = LOOPBACK_OUT_OF(phy_data, efx, TENXPRESS_LOOPBACKS); - if (!tenxpress_state_is(efx, TENXPRESS_STATUS_NORMAL)) + if (efx->phy_mode & PHY_MODE_SPECIAL) { + phy_data->phy_mode = efx->phy_mode; return; + } /* When coming out of transmit disable, coming out of low power * mode, or moving out of any PHY internal loopback mode, * perform a special software reset */ - if ((phy_data->tx_disabled && !efx->tx_disabled) || + if ((efx->phy_mode == PHY_MODE_NORMAL && + phy_data->phy_mode != PHY_MODE_NORMAL) || loop_change) { tenxpress_special_reset(efx); falcon_reset_xaui(efx); @@ -386,8 +371,8 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx) mdio_clause45_phy_reconfigure(efx); tenxpress_phyxs_loopback(efx); - phy_data->tx_disabled = efx->tx_disabled; phy_data->loopback_mode = efx->loopback_mode; + phy_data->phy_mode = efx->phy_mode; efx->link_up = tenxpress_link_ok(efx, false); efx->link_options = GM_LPA_10000FULL; } @@ -402,16 +387,15 @@ static void tenxpress_phy_clear_interrupt(struct efx_nic *efx) static int tenxpress_phy_check_hw(struct efx_nic *efx) { struct tenxpress_phy_data *phy_data = efx->phy_data; - bool phy_up = tenxpress_state_is(efx, TENXPRESS_STATUS_NORMAL); bool link_ok; - link_ok = phy_up && tenxpress_link_ok(efx, true); + link_ok = (phy_data->phy_mode == PHY_MODE_NORMAL && + tenxpress_link_ok(efx, true)); if (link_ok != efx->link_up) falcon_xmac_sim_phy_event(efx); - /* Nothing to check if we've already shut down the PHY */ - if (!phy_up) + if (phy_data->phy_mode != PHY_MODE_NORMAL) return 0; if (atomic_read(&phy_data->bad_crc_count) > crc_error_reset_threshold) { diff --git a/drivers/net/sfc/xfp_phy.c b/drivers/net/sfc/xfp_phy.c index fd4045b4d9d0..f6edecc2e588 100644 --- a/drivers/net/sfc/xfp_phy.c +++ b/drivers/net/sfc/xfp_phy.c @@ -40,7 +40,7 @@ void xfp_set_led(struct efx_nic *p, int led, int mode) } struct xfp_phy_data { - bool tx_disabled; + enum efx_phy_mode phy_mode; }; #define XFP_MAX_RESET_TIME 500 @@ -93,7 +93,7 @@ static int xfp_phy_init(struct efx_nic *efx) " %x)\n", devid, MDIO_ID_OUI(devid), MDIO_ID_MODEL(devid), MDIO_ID_REV(devid)); - phy_data->tx_disabled = efx->tx_disabled; + phy_data->phy_mode = efx->phy_mode; rc = xfp_reset_phy(efx); @@ -136,13 +136,14 @@ static void xfp_phy_reconfigure(struct efx_nic *efx) struct xfp_phy_data *phy_data = efx->phy_data; /* Reset the PHY when moving from tx off to tx on */ - if (phy_data->tx_disabled && !efx->tx_disabled) + if (!(efx->phy_mode & PHY_MODE_TX_DISABLED) && + (phy_data->phy_mode & PHY_MODE_TX_DISABLED)) xfp_reset_phy(efx); mdio_clause45_transmit_disable(efx); mdio_clause45_phy_reconfigure(efx); - phy_data->tx_disabled = efx->tx_disabled; + phy_data->phy_mode = efx->phy_mode; efx->link_up = xfp_link_ok(efx); efx->link_options = GM_LPA_10000FULL; } |