diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/sfc/efx.c | 35 | ||||
| -rw-r--r-- | drivers/net/sfc/efx.h | 3 | ||||
| -rw-r--r-- | drivers/net/sfc/falcon.c | 69 | ||||
| -rw-r--r-- | drivers/net/sfc/falcon.h | 1 | ||||
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 24 | ||||
| -rw-r--r-- | drivers/net/sfc/qt202x_phy.c | 26 | ||||
| -rw-r--r-- | drivers/net/sfc/tenxpress.c | 69 |
7 files changed, 103 insertions, 124 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c index 1009d1eeba8..b5a7e91590d 100644 --- a/drivers/net/sfc/efx.c +++ b/drivers/net/sfc/efx.c @@ -583,7 +583,7 @@ void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue, int delay) * netif_carrier_on/off) of the link status, and also maintains the * link status's stop on the port's TX queue. */ -static void efx_link_status_changed(struct efx_nic *efx) +void efx_link_status_changed(struct efx_nic *efx) { struct efx_link_state *link_state = &efx->link_state; @@ -675,19 +675,6 @@ void efx_reconfigure_port(struct efx_nic *efx) mutex_unlock(&efx->mac_lock); } -/* Asynchronous efx_reconfigure_port work item. To speed up efx_flush_all() - * we don't efx_reconfigure_port() if the port is disabled. Care is taken - * in efx_stop_all() and efx_start_port() to prevent PHY events being lost */ -static void efx_phy_work(struct work_struct *data) -{ - struct efx_nic *efx = container_of(data, struct efx_nic, phy_work); - - mutex_lock(&efx->mac_lock); - if (efx->port_enabled) - __efx_reconfigure_port(efx); - mutex_unlock(&efx->mac_lock); -} - /* Asynchronous work item for changing MAC promiscuity and multicast * hash. Avoid a drain/rx_ingress enable by reconfiguring the current * MAC directly. */ @@ -768,9 +755,6 @@ fail1: return rc; } -/* Allow efx_reconfigure_port() to be scheduled, and close the window - * between efx_stop_port and efx_flush_all whereby a previously scheduled - * efx_phy_work()/efx_mac_work() may have been cancelled */ static void efx_start_port(struct efx_nic *efx) { EFX_LOG(efx, "start port\n"); @@ -787,10 +771,7 @@ static void efx_start_port(struct efx_nic *efx) mutex_unlock(&efx->mac_lock); } -/* Prevent efx_phy_work, efx_mac_work, and efx_monitor() from executing, - * and efx_set_multicast_list() from scheduling efx_phy_work. efx_phy_work - * and efx_mac_work may still be scheduled via NAPI processing until - * efx_flush_all() is called */ +/* Prevent efx_mac_work() and efx_monitor() from working */ static void efx_stop_port(struct efx_nic *efx) { EFX_LOG(efx, "stop port\n"); @@ -1188,8 +1169,6 @@ static void efx_flush_all(struct efx_nic *efx) /* Stop scheduled port reconfigurations */ cancel_work_sync(&efx->mac_work); - cancel_work_sync(&efx->phy_work); - } /* Quiesce hardware and software without bringing the link down. @@ -1227,7 +1206,7 @@ static void efx_stop_all(struct efx_nic *efx) * window to loose phy events */ efx_stop_port(efx); - /* Flush efx_phy_work, efx_mac_work, refill_workqueue, monitor_work */ + /* Flush efx_mac_work(), refill_workqueue, monitor_work */ efx_flush_all(efx); /* Isolate the MAC from the TX and RX engines, so that queue @@ -1907,6 +1886,10 @@ void efx_port_dummy_op_void(struct efx_nic *efx) {} void efx_port_dummy_op_set_id_led(struct efx_nic *efx, enum efx_led_mode mode) { } +bool efx_port_dummy_op_poll(struct efx_nic *efx) +{ + return false; +} static struct efx_mac_operations efx_dummy_mac_operations = { .reconfigure = efx_port_dummy_op_void, @@ -1915,9 +1898,8 @@ static struct efx_mac_operations efx_dummy_mac_operations = { static struct efx_phy_operations efx_dummy_phy_operations = { .init = efx_port_dummy_op_int, .reconfigure = efx_port_dummy_op_void, - .poll = efx_port_dummy_op_void, + .poll = efx_port_dummy_op_poll, .fini = efx_port_dummy_op_void, - .clear_interrupt = efx_port_dummy_op_void, }; /************************************************************************** @@ -1957,7 +1939,6 @@ static int efx_init_struct(struct efx_nic *efx, struct efx_nic_type *type, efx->mac_op = &efx_dummy_mac_operations; efx->phy_op = &efx_dummy_phy_operations; efx->mdio.dev = net_dev; - INIT_WORK(&efx->phy_work, efx_phy_work); INIT_WORK(&efx->mac_work, efx_mac_work); atomic_set(&efx->netif_stop_count, 1); diff --git a/drivers/net/sfc/efx.h b/drivers/net/sfc/efx.h index 01b93f93d31..15edda2a224 100644 --- a/drivers/net/sfc/efx.h +++ b/drivers/net/sfc/efx.h @@ -90,6 +90,7 @@ extern int efx_port_dummy_op_int(struct efx_nic *efx); extern void efx_port_dummy_op_void(struct efx_nic *efx); extern void efx_port_dummy_op_set_id_led(struct efx_nic *efx, enum efx_led_mode mode); +extern bool efx_port_dummy_op_poll(struct efx_nic *efx); /* MTD */ #ifdef CONFIG_SFC_MTD @@ -113,4 +114,6 @@ static inline void efx_schedule_channel(struct efx_channel *channel) napi_schedule(&channel->napi_str); } +extern void efx_link_status_changed(struct efx_nic *efx); + #endif /* EFX_EFX_H */ diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c index e26043eb01b..e16faad7028 100644 --- a/drivers/net/sfc/falcon.c +++ b/drivers/net/sfc/falcon.c @@ -893,8 +893,7 @@ static void falcon_handle_global_event(struct efx_channel *channel, if (EFX_QWORD_FIELD(*event, FSF_AB_GLB_EV_G_PHY0_INTR) || EFX_QWORD_FIELD(*event, FSF_AB_GLB_EV_XG_PHY0_INTR) || EFX_QWORD_FIELD(*event, FSF_AB_GLB_EV_XFP_PHY0_INTR)) { - efx->phy_op->clear_interrupt(efx); - queue_work(efx->workqueue, &efx->phy_work); + /* Ignored */ handled = true; } @@ -1140,20 +1139,6 @@ void falcon_generate_test_event(struct efx_channel *channel, unsigned int magic) falcon_generate_event(channel, &test_event); } -void falcon_sim_phy_event(struct efx_nic *efx) -{ - efx_qword_t phy_event; - - EFX_POPULATE_QWORD_1(phy_event, FSF_AZ_EV_CODE, - FSE_AZ_EV_CODE_GLOBAL_EV); - if (EFX_IS10G(efx)) - EFX_SET_QWORD_FIELD(phy_event, FSF_AB_GLB_EV_XG_PHY0_INTR, 1); - else - EFX_SET_QWORD_FIELD(phy_event, FSF_AB_GLB_EV_G_PHY0_INTR, 1); - - falcon_generate_event(&efx->channel[0], &phy_event); -} - /************************************************************************** * * Flush handling @@ -2063,6 +2048,25 @@ static void falcon_stats_timer_func(unsigned long context) spin_unlock(&efx->stats_lock); } +static bool falcon_loopback_link_poll(struct efx_nic *efx) +{ + struct efx_link_state old_state = efx->link_state; + + WARN_ON(!mutex_is_locked(&efx->mac_lock)); + WARN_ON(!LOOPBACK_INTERNAL(efx)); + + efx->link_state.fd = true; + efx->link_state.fc = efx->wanted_fc; + efx->link_state.up = true; + + if (efx->loopback_mode == LOOPBACK_GMAC) + efx->link_state.speed = 1000; + else + efx->link_state.speed = 10000; + + return !efx_link_state_equal(&efx->link_state, &old_state); +} + /************************************************************************** * * PHY access via GMII @@ -2225,15 +2229,6 @@ int falcon_switch_mac(struct efx_nic *efx) /* Don't try to fetch MAC stats while we're switching MACs */ falcon_stop_nic_stats(efx); - /* Internal loopbacks override the phy speed setting */ - if (efx->loopback_mode == LOOPBACK_GMAC) { - efx->link_state.speed = 1000; - efx->link_state.fd = true; - } else if (LOOPBACK_INTERNAL(efx)) { - efx->link_state.speed = 10000; - efx->link_state.fd = true; - } - WARN_ON(!mutex_is_locked(&efx->mac_lock)); efx->mac_op = (EFX_IS10G(efx) ? &falcon_xmac_operations : &falcon_gmac_operations); @@ -2610,16 +2605,36 @@ fail5: void falcon_monitor(struct efx_nic *efx) { + bool link_changed; int rc; + BUG_ON(!mutex_is_locked(&efx->mac_lock)); + rc = falcon_board(efx)->type->monitor(efx); if (rc) { EFX_ERR(efx, "Board sensor %s; shutting down PHY\n", (rc == -ERANGE) ? "reported fault" : "failed"); efx->phy_mode |= PHY_MODE_LOW_POWER; - falcon_sim_phy_event(efx); + __efx_reconfigure_port(efx); } - efx->phy_op->poll(efx); + + if (LOOPBACK_INTERNAL(efx)) + link_changed = falcon_loopback_link_poll(efx); + else + link_changed = efx->phy_op->poll(efx); + + if (link_changed) { + falcon_stop_nic_stats(efx); + falcon_deconfigure_mac_wrapper(efx); + + falcon_switch_mac(efx); + efx->mac_op->reconfigure(efx); + + falcon_start_nic_stats(efx); + + efx_link_status_changed(efx); + } + if (EFX_IS10G(efx)) falcon_poll_xmac(efx); } diff --git a/drivers/net/sfc/falcon.h b/drivers/net/sfc/falcon.h index c70bb084216..a561f6758bc 100644 --- a/drivers/net/sfc/falcon.h +++ b/drivers/net/sfc/falcon.h @@ -145,7 +145,6 @@ extern int falcon_init_interrupt(struct efx_nic *efx); extern void falcon_enable_interrupts(struct efx_nic *efx); extern void falcon_generate_test_event(struct efx_channel *channel, unsigned int magic); -extern void falcon_sim_phy_event(struct efx_nic *efx); extern void falcon_generate_interrupt(struct efx_nic *efx); extern void falcon_set_int_moderation(struct efx_channel *channel); extern void falcon_disable_interrupts(struct efx_nic *efx); diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index ead1c982365..fb9327c5ea5 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -503,6 +503,13 @@ struct efx_link_state { unsigned int speed; }; +static inline bool efx_link_state_equal(const struct efx_link_state *left, + const struct efx_link_state *right) +{ + return left->up == right->up && left->fd == right->fd && + left->fc == right->fc && left->speed == right->speed; +} + /** * struct efx_mac_operations - Efx MAC operations table * @reconfigure: Reconfigure MAC. Serialised by the mac_lock @@ -520,8 +527,8 @@ struct efx_mac_operations { * @init: Initialise PHY * @fini: Shut down PHY * @reconfigure: Reconfigure PHY (e.g. for new link parameters) - * @clear_interrupt: Clear down interrupt - * @poll: Poll for hardware state. Serialised by the mac_lock. + * @poll: Update @link_state and report whether it changed. + * Serialised by the mac_lock. * @get_settings: Get ethtool settings. Serialised by the mac_lock. * @set_settings: Set ethtool settings. Serialised by the mac_lock. * @set_npage_adv: Set abilities advertised in (Extended) Next Page @@ -538,8 +545,7 @@ struct efx_phy_operations { int (*init) (struct efx_nic *efx); void (*fini) (struct efx_nic *efx); void (*reconfigure) (struct efx_nic *efx); - void (*clear_interrupt) (struct efx_nic *efx); - void (*poll) (struct efx_nic *efx); + bool (*poll) (struct efx_nic *efx); void (*get_settings) (struct efx_nic *efx, struct ethtool_cmd *ecmd); int (*set_settings) (struct efx_nic *efx, @@ -700,10 +706,10 @@ union efx_multicast_hash { * @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode, * @port_inhibited, efx_monitor() and efx_reconfigure_port() * @port_enabled: Port enabled indicator. - * Serialises efx_stop_all(), efx_start_all(), efx_monitor(), - * efx_phy_work(), and efx_mac_work() with kernel interfaces. Safe to read - * under any one of the rtnl_lock, mac_lock, or netif_tx_lock, but all - * three must be held to modify it. + * Serialises efx_stop_all(), efx_start_all(), efx_monitor() and + * efx_mac_work() with kernel interfaces. Safe to read under any + * one of the rtnl_lock, mac_lock, or netif_tx_lock, but all three must + * be held to modify it. * @port_inhibited: If set, the netif_carrier is always off. Hold the mac_lock * @port_initialized: Port initialized? * @net_dev: Operating system network device. Consider holding the rtnl lock @@ -729,7 +735,6 @@ union efx_multicast_hash { * @promiscuous: Promiscuous flag. Protected by netif_tx_lock. * @multicast_hash: Multicast hash table * @wanted_fc: Wanted flow control flags - * @phy_work: work item for dealing with PHY events * @mac_work: Work item for changing MAC promiscuity and multicast hash * @loopback_mode: Loopback status * @loopback_modes: Supported loopback mode bitmask @@ -802,7 +807,6 @@ struct efx_nic { enum phy_type phy_type; spinlock_t phy_lock; - struct work_struct phy_work; struct efx_phy_operations *phy_op; void *phy_data; struct mdio_if_info mdio; diff --git a/drivers/net/sfc/qt202x_phy.c b/drivers/net/sfc/qt202x_phy.c index f9c354e9fc3..1b174c3e6c1 100644 --- a/drivers/net/sfc/qt202x_phy.c +++ b/drivers/net/sfc/qt202x_phy.c @@ -167,29 +167,26 @@ static int qt202x_phy_init(struct efx_nic *efx) return rc; } -static void qt202x_phy_clear_interrupt(struct efx_nic *efx) -{ - /* Read to clear link status alarm */ - efx_mdio_read(efx, MDIO_MMD_PMAPMD, MDIO_PMA_LASI_STAT); -} - static int qt202x_link_ok(struct efx_nic *efx) { return efx_mdio_links_ok(efx, QT202X_REQUIRED_DEVS); } -static void qt202x_phy_poll(struct efx_nic *efx) +static bool qt202x_phy_poll(struct efx_nic *efx) { - int link_up = qt202x_link_ok(efx); - /* Simulate a PHY event if link state has changed */ - if (link_up != efx->link_state.up) - falcon_sim_phy_event(efx); + bool was_up = efx->link_state.up; + + efx->link_state.up = qt202x_link_ok(efx); + efx->link_state.speed = 10000; + efx->link_state.fd = true; + efx->link_state.fc = efx->wanted_fc; + + return efx->link_state.up != was_up; } static void qt202x_phy_reconfigure(struct efx_nic *efx) { struct qt202x_phy_data *phy_data = efx->phy_data; - struct efx_link_state *link_state = &efx->link_state; if (efx->phy_type == PHY_TYPE_QT2025C) { /* There are several different register bits which can @@ -216,10 +213,6 @@ static void qt202x_phy_reconfigure(struct efx_nic *efx) efx_mdio_phy_reconfigure(efx); phy_data->phy_mode = efx->phy_mode; - link_state->up = qt202x_link_ok(efx); - link_state->speed = 10000; - link_state->fd = true; - link_state->fc = efx->wanted_fc; } static void qt202x_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) @@ -240,7 +233,6 @@ struct efx_phy_operations falcon_qt202x_phy_ops = { .reconfigure = qt202x_phy_reconfigure, .poll = qt202x_phy_poll, .fini = qt202x_phy_fini, - .clear_interrupt = qt202x_phy_clear_interrupt, .get_settings = qt202x_phy_get_settings, .set_settings = efx_mdio_set_settings, .mmds = QT202X_REQUIRED_DEVS, diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c index e6232fe2607..1bd79650a00 100644 --- a/drivers/net/sfc/tenxpress.c +++ b/drivers/net/sfc/tenxpress.c @@ -503,7 +503,6 @@ static void tenxpress_low_power(struct efx_nic *efx) static void tenxpress_phy_reconfigure(struct efx_nic *efx) { struct tenxpress_phy_data *phy_data = efx->phy_data; - struct efx_link_state *link_state = &efx->link_state; struct ethtool_cmd ecmd; bool phy_mode_change, loop_reset; @@ -544,53 +543,41 @@ static void tenxpress_phy_reconfigure(struct efx_nic *efx) phy_data->loopback_mode = efx->loopback_mode; phy_data->phy_mode = efx->phy_mode; - - if (efx->phy_type == PHY_TYPE_SFX7101) { - link_state->speed = 10000; - link_state->fd = true; - link_state->up = sfx7101_link_ok(efx); - } else { - efx->phy_op->get_settings(efx, &ecmd); - link_state->speed = ecmd.speed; - link_state->fd = ecmd.duplex == DUPLEX_FULL; - link_state->up = sft9001_link_ok(efx, &ecmd); - } - link_state->fc = efx_mdio_get_pause(efx); } -/* Poll PHY for interrupt */ -static void tenxpress_phy_poll(struct efx_nic *efx) +static void +tenxpress_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd); + +/* Poll for link state changes */ +static bool tenxpress_phy_poll(struct efx_nic *efx) { - struct tenxpress_phy_data *phy_data = efx->phy_data; - struct efx_link_state *link_state = &efx->link_state; - bool change = false; + struct efx_link_state old_state = efx->link_state; if (efx->phy_type == PHY_TYPE_SFX7101) { - bool link_ok = sfx7101_link_ok(efx); - if (link_ok != link_state->up) { - change = true; - } else { - unsigned int link_fc = efx_mdio_get_pause(efx); - if (link_fc != link_state->fc) - change = true; - } - sfx7101_check_bad_lp(efx, link_ok); - } else if (efx->loopback_mode) { - bool link_ok = sft9001_link_ok(efx, NULL); - if (link_ok != link_state->up) - change = true; + efx->link_state.up = sfx7101_link_ok(efx); + efx->link_state.speed = 10000; + efx->link_state.fd = true; + efx->link_state.fc = efx_mdio_get_pause(efx); + + sfx7101_check_bad_lp(efx, efx->link_state.up); } else { - int status = efx_mdio_read(efx, MDIO_MMD_PMAPMD, - MDIO_PMA_LASI_STAT); - if (status & MDIO_PMA_LASI_LSALARM) - change = true; - } + struct ethtool_cmd ecmd; - if (change) - falcon_sim_phy_event(efx); + /* Check the LASI alarm first */ + if (efx->loopback_mode == LOOPBACK_NONE && + !(efx_mdio_read(efx, MDIO_MMD_PMAPMD, MDIO_PMA_LASI_STAT) & + MDIO_PMA_LASI_LSALARM)) + return false; - if (phy_data->phy_mode != PHY_MODE_NORMAL) - return; + tenxpress_get_settings(efx, &ecmd); + + efx->link_state.up = sft9001_link_ok(efx, &ecmd); + efx->link_state.speed = ecmd.speed; + efx->link_state.fd = (ecmd.duplex == DUPLEX_FULL); + efx->link_state.fc = efx_mdio_get_pause(efx); + } + + return !efx_link_state_equal(&efx->link_state, &old_state); } static void tenxpress_phy_fini(struct efx_nic *efx) @@ -818,7 +805,6 @@ struct efx_phy_operations falcon_sfx7101_phy_ops = { .reconfigure = tenxpress_phy_reconfigure, .poll = tenxpress_phy_poll, .fini = tenxpress_phy_fini, - .clear_interrupt = efx_port_dummy_op_void, .get_settings = tenxpress_get_settings, .set_settings = tenxpress_set_settings, .set_npage_adv = sfx7101_set_npage_adv, @@ -835,7 +821,6 @@ struct efx_phy_operations falcon_sft9001_phy_ops = { .reconfigure = tenxpress_phy_reconfigure, .poll = tenxpress_phy_poll, .fini = tenxpress_phy_fini, - .clear_interrupt = efx_port_dummy_op_void, .get_settings = tenxpress_get_settings, .set_settings = tenxpress_set_settings, .set_npage_adv = sft9001_set_npage_adv, |