#include <linux/ethtool.h>
#include <linux/topology.h>
#include "net_driver.h"
-#include "ethtool.h"
-#include "tx.h"
-#include "rx.h"
#include "efx.h"
#include "mdio_10g.h"
#include "falcon.h"
+/**************************************************************************
+ *
+ * Type name strings
+ *
+ **************************************************************************
+ */
+
+/* Loopback mode names (see LOOPBACK_MODE()) */
+const unsigned int efx_loopback_mode_max = LOOPBACK_MAX;
+const char *efx_loopback_mode_names[] = {
+ [LOOPBACK_NONE] = "NONE",
+ [LOOPBACK_GMAC] = "GMAC",
+ [LOOPBACK_XGMII] = "XGMII",
+ [LOOPBACK_XGXS] = "XGXS",
+ [LOOPBACK_XAUI] = "XAUI",
+ [LOOPBACK_GPHY] = "GPHY",
+ [LOOPBACK_PHYXS] = "PHYXS",
+ [LOOPBACK_PCS] = "PCS",
+ [LOOPBACK_PMAPMD] = "PMA/PMD",
+ [LOOPBACK_NETWORK] = "NETWORK",
+};
+
+/* Interrupt mode names (see INT_MODE())) */
+const unsigned int efx_interrupt_mode_max = EFX_INT_MODE_MAX;
+const char *efx_interrupt_mode_names[] = {
+ [EFX_INT_MODE_MSIX] = "MSI-X",
+ [EFX_INT_MODE_MSI] = "MSI",
+ [EFX_INT_MODE_LEGACY] = "legacy",
+};
+
+const unsigned int efx_reset_type_max = RESET_TYPE_MAX;
+const char *efx_reset_type_names[] = {
+ [RESET_TYPE_INVISIBLE] = "INVISIBLE",
+ [RESET_TYPE_ALL] = "ALL",
+ [RESET_TYPE_WORLD] = "WORLD",
+ [RESET_TYPE_DISABLE] = "DISABLE",
+ [RESET_TYPE_TX_WATCHDOG] = "TX_WATCHDOG",
+ [RESET_TYPE_INT_ERROR] = "INT_ERROR",
+ [RESET_TYPE_RX_RECOVERY] = "RX_RECOVERY",
+ [RESET_TYPE_RX_DESC_FETCH] = "RX_DESC_FETCH",
+ [RESET_TYPE_TX_DESC_FETCH] = "TX_DESC_FETCH",
+ [RESET_TYPE_TX_SKIP] = "TX_SKIP",
+};
+
#define EFX_MAX_MTU (9 * 1024)
/* RX slow fill workqueue. If memory allocation fails in the fast path,
#define EFX_ASSERT_RESET_SERIALISED(efx) \
do { \
- if (efx->state == STATE_RUNNING) \
+ if ((efx->state == STATE_RUNNING) || \
+ (efx->state == STATE_DISABLED)) \
ASSERT_RTNL(); \
} while (0)
if (channel->used_flags & EFX_USED_BY_RX &&
efx->irq_rx_adaptive &&
unlikely(++channel->irq_count == 1000)) {
- unsigned old_irq_moderation = channel->irq_moderation;
-
if (unlikely(channel->irq_mod_score <
irq_adapt_low_thresh)) {
- channel->irq_moderation =
- max_t(int,
- channel->irq_moderation -
- FALCON_IRQ_MOD_RESOLUTION,
- FALCON_IRQ_MOD_RESOLUTION);
+ if (channel->irq_moderation > 1) {
+ channel->irq_moderation -= 1;
+ falcon_set_int_moderation(channel);
+ }
} else if (unlikely(channel->irq_mod_score >
irq_adapt_high_thresh)) {
- channel->irq_moderation =
- min(channel->irq_moderation +
- FALCON_IRQ_MOD_RESOLUTION,
- efx->irq_rx_moderation);
+ if (channel->irq_moderation <
+ efx->irq_rx_moderation) {
+ channel->irq_moderation += 1;
+ falcon_set_int_moderation(channel);
+ }
}
-
- if (channel->irq_moderation != old_irq_moderation)
- falcon_set_int_moderation(channel);
-
channel->irq_count = 0;
channel->irq_mod_score = 0;
}
napi_disable(&channel->napi_str);
/* Poll the channel */
- efx_process_channel(channel, efx->type->evq_size);
+ efx_process_channel(channel, EFX_EVQ_SIZE);
/* Ack the eventq. This may cause an interrupt to be generated
* when they are reenabled */
*/
static void efx_link_status_changed(struct efx_nic *efx)
{
+ struct efx_link_state *link_state = &efx->link_state;
+
/* SFC Bug 5356: A net_dev notifier is registered, so we must ensure
* that no events are triggered between unregister_netdev() and the
* driver unloading. A more general condition is that NETDEV_CHANGE
return;
}
- if (efx->link_up != netif_carrier_ok(efx->net_dev)) {
+ if (link_state->up != netif_carrier_ok(efx->net_dev)) {
efx->n_link_state_changes++;
- if (efx->link_up)
+ if (link_state->up)
netif_carrier_on(efx->net_dev);
else
netif_carrier_off(efx->net_dev);
}
/* Status message for kernel log */
- if (efx->link_up) {
+ if (link_state->up) {
EFX_INFO(efx, "link up at %uMbps %s-duplex (MTU %d)%s\n",
- efx->link_speed, efx->link_fd ? "full" : "half",
+ link_state->speed, link_state->fd ? "full" : "half",
efx->net_dev->mtu,
(efx->promiscuous ? " [PROMISC]" : ""));
} else {
netif_addr_unlock_bh(efx->net_dev);
}
+ falcon_stop_nic_stats(efx);
falcon_deconfigure_mac_wrapper(efx);
/* Reconfigure the PHY, disabling transmit in mac level loopback. */
efx->mac_op->reconfigure(efx);
+ falcon_start_nic_stats(efx);
+
/* Inform kernel of loss/gain of carrier */
efx_link_status_changed(efx);
return;
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. */
static void efx_mac_work(struct work_struct *data)
{
struct efx_nic *efx = container_of(data, struct efx_nic, mac_work);
mutex_lock(&efx->mac_lock);
- if (efx->port_enabled)
- efx->mac_op->irq(efx);
+ if (efx->port_enabled) {
+ falcon_push_multicast_hash(efx);
+ efx->mac_op->reconfigure(efx);
+ }
mutex_unlock(&efx->mac_lock);
}
EFX_LOG(efx, "init port\n");
+ mutex_lock(&efx->mac_lock);
+
rc = efx->phy_op->init(efx);
if (rc)
- return rc;
- mutex_lock(&efx->mac_lock);
+ goto fail1;
efx->phy_op->reconfigure(efx);
rc = falcon_switch_mac(efx);
- mutex_unlock(&efx->mac_lock);
if (rc)
- goto fail;
+ goto fail2;
efx->mac_op->reconfigure(efx);
efx->port_initialized = true;
- efx_stats_enable(efx);
+
+ mutex_unlock(&efx->mac_lock);
return 0;
-fail:
+fail2:
efx->phy_op->fini(efx);
+fail1:
+ mutex_unlock(&efx->mac_lock);
return rc;
}
mutex_lock(&efx->mac_lock);
efx->port_enabled = true;
- __efx_reconfigure_port(efx);
- efx->mac_op->irq(efx);
+
+ /* efx_mac_work() might have been scheduled after efx_stop_port(),
+ * and then cancelled by efx_flush_all() */
+ falcon_push_multicast_hash(efx);
+ efx->mac_op->reconfigure(efx);
+
mutex_unlock(&efx->mac_lock);
}
if (!efx->port_initialized)
return;
- efx_stats_disable(efx);
efx->phy_op->fini(efx);
efx->port_initialized = false;
- efx->link_up = false;
+ efx->link_state.up = false;
efx_link_status_changed(efx);
}
goto fail2;
}
- efx->membase_phys = pci_resource_start(efx->pci_dev,
- efx->type->mem_bar);
- rc = pci_request_region(pci_dev, efx->type->mem_bar, "sfc");
+ efx->membase_phys = pci_resource_start(efx->pci_dev, EFX_MEM_BAR);
+ rc = pci_request_region(pci_dev, EFX_MEM_BAR, "sfc");
if (rc) {
EFX_ERR(efx, "request for memory BAR failed\n");
rc = -EIO;
efx->membase = ioremap_nocache(efx->membase_phys,
efx->type->mem_map_size);
if (!efx->membase) {
- EFX_ERR(efx, "could not map memory BAR %d at %llx+%x\n",
- efx->type->mem_bar,
+ EFX_ERR(efx, "could not map memory BAR at %llx+%x\n",
(unsigned long long)efx->membase_phys,
efx->type->mem_map_size);
rc = -ENOMEM;
goto fail4;
}
- EFX_LOG(efx, "memory BAR %u at %llx+%x (virtual %p)\n",
- efx->type->mem_bar, (unsigned long long)efx->membase_phys,
+ EFX_LOG(efx, "memory BAR at %llx+%x (virtual %p)\n",
+ (unsigned long long)efx->membase_phys,
efx->type->mem_map_size, efx->membase);
return 0;
fail4:
- pci_release_region(efx->pci_dev, efx->type->mem_bar);
+ pci_release_region(efx->pci_dev, EFX_MEM_BAR);
fail3:
efx->membase_phys = 0;
fail2:
}
if (efx->membase_phys) {
- pci_release_region(efx->pci_dev, efx->type->mem_bar);
+ pci_release_region(efx->pci_dev, EFX_MEM_BAR);
efx->membase_phys = 0;
}
if (efx->state == STATE_RUNNING)
queue_delayed_work(efx->workqueue, &efx->monitor_work,
efx_monitor_interval);
+
+ falcon_start_nic_stats(efx);
}
/* Flush all delayed work. Should only be called when no more delayed work
if (!efx->port_enabled)
return;
+ falcon_stop_nic_stats(efx);
+
/* Disable interrupts and wait for ISR to complete */
falcon_disable_interrupts(efx);
if (efx->legacy_irq)
efx_remove_nic(efx);
}
-/* A convinience function to safely flush all the queues */
-void efx_flush_queues(struct efx_nic *efx)
-{
- EFX_ASSERT_RESET_SERIALISED(efx);
-
- efx_stop_all(efx);
-
- efx_fini_channels(efx);
- efx_init_channels(efx);
-
- efx_start_all(efx);
-}
-
/**************************************************************************
*
* Interrupt moderation
*
**************************************************************************/
+static unsigned irq_mod_ticks(int usecs, int resolution)
+{
+ if (usecs <= 0)
+ return 0; /* cannot receive interrupts ahead of time :-) */
+ if (usecs < resolution)
+ return 1; /* never round down to 0 */
+ return usecs / resolution;
+}
+
/* Set interrupt moderation parameters */
void efx_init_irq_moderation(struct efx_nic *efx, int tx_usecs, int rx_usecs,
bool rx_adaptive)
{
struct efx_tx_queue *tx_queue;
struct efx_rx_queue *rx_queue;
+ unsigned tx_ticks = irq_mod_ticks(tx_usecs, FALCON_IRQ_MOD_RESOLUTION);
+ unsigned rx_ticks = irq_mod_ticks(rx_usecs, FALCON_IRQ_MOD_RESOLUTION);
EFX_ASSERT_RESET_SERIALISED(efx);
efx_for_each_tx_queue(tx_queue, efx)
- tx_queue->channel->irq_moderation = tx_usecs;
+ tx_queue->channel->irq_moderation = tx_ticks;
efx->irq_rx_adaptive = rx_adaptive;
- efx->irq_rx_moderation = rx_usecs;
+ efx->irq_rx_moderation = rx_ticks;
efx_for_each_rx_queue(rx_queue, efx)
- rx_queue->channel->irq_moderation = rx_usecs;
+ rx_queue->channel->irq_moderation = rx_ticks;
}
/**************************************************************************
{
struct efx_nic *efx = container_of(data, struct efx_nic,
monitor_work.work);
- int rc;
EFX_TRACE(efx, "hardware monitor executing on CPU %d\n",
raw_smp_processor_id());
goto out_requeue;
if (!efx->port_enabled)
goto out_unlock;
- rc = efx->board_info.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->phy_op->poll(efx);
- efx->mac_op->poll(efx);
+ falcon_monitor(efx);
out_unlock:
mutex_unlock(&efx->mac_lock);
return 0;
}
-void efx_stats_disable(struct efx_nic *efx)
-{
- spin_lock(&efx->stats_lock);
- ++efx->stats_disable_count;
- spin_unlock(&efx->stats_lock);
-}
-
-void efx_stats_enable(struct efx_nic *efx)
-{
- spin_lock(&efx->stats_lock);
- --efx->stats_disable_count;
- spin_unlock(&efx->stats_lock);
-}
-
/* Context: process, dev_base_lock or RTNL held, non-blocking. */
static struct net_device_stats *efx_net_stats(struct net_device *net_dev)
{
struct efx_mac_stats *mac_stats = &efx->mac_stats;
struct net_device_stats *stats = &net_dev->stats;
- /* Update stats if possible, but do not wait if another thread
- * is updating them or if MAC stats fetches are temporarily
- * disabled; slightly stale stats are acceptable.
- */
- if (!spin_trylock(&efx->stats_lock))
- return stats;
- if (!efx->stats_disable_count) {
- efx->mac_op->update_stats(efx);
- falcon_update_nic_stats(efx);
- }
- spin_unlock(&efx->stats_lock);
+ spin_lock_bh(&efx->stats_lock);
+ falcon_update_nic_stats(efx);
+ spin_unlock_bh(&efx->stats_lock);
stats->rx_packets = mac_stats->rx_packets;
stats->tx_packets = mac_stats->tx_packets;
struct efx_nic *efx = netdev_priv(net_dev);
struct dev_mc_list *mc_list = net_dev->mc_list;
union efx_multicast_hash *mc_hash = &efx->multicast_hash;
- bool promiscuous = !!(net_dev->flags & IFF_PROMISC);
- bool changed = (efx->promiscuous != promiscuous);
u32 crc;
int bit;
int i;
- efx->promiscuous = promiscuous;
+ efx->promiscuous = !!(net_dev->flags & IFF_PROMISC);
/* Build multicast hash table */
- if (promiscuous || (net_dev->flags & IFF_ALLMULTI)) {
+ if (efx->promiscuous || (net_dev->flags & IFF_ALLMULTI)) {
memset(mc_hash, 0xff, sizeof(*mc_hash));
} else {
memset(mc_hash, 0x00, sizeof(*mc_hash));
set_bit_le(bit, mc_hash->byte);
mc_list = mc_list->next;
}
- }
- if (!efx->port_enabled)
- /* Delay pushing settings until efx_start_port() */
- return;
-
- if (changed)
- queue_work(efx->workqueue, &efx->phy_work);
+ /* Broadcast packets go through the multicast hash filter.
+ * ether_crc_le() of the broadcast address is 0xbe2612ff
+ * so we always add bit 0xff to the mask.
+ */
+ set_bit_le(0xff, mc_hash->byte);
+ }
- /* Create and activate new global multicast hash table */
- falcon_set_multicast_hash(efx);
+ if (efx->port_enabled)
+ queue_work(efx->workqueue, &efx->mac_work);
+ /* Otherwise efx_start_port() will do this */
}
static const struct net_device_ops efx_netdev_ops = {
{
EFX_ASSERT_RESET_SERIALISED(efx);
- efx_stats_disable(efx);
efx_stop_all(efx);
mutex_lock(&efx->mac_lock);
mutex_lock(&efx->spi_lock);
mutex_unlock(&efx->spi_lock);
mutex_unlock(&efx->mac_lock);
- if (ok) {
+ if (ok)
efx_start_all(efx);
- efx_stats_enable(efx);
- }
return rc;
}
goto out_unlock;
}
- EFX_INFO(efx, "resetting (%d)\n", method);
+ EFX_INFO(efx, "resetting (%s)\n", RESET_TYPE(method));
efx_reset_down(efx, method, &ecmd);
}
if (method != type)
- EFX_LOG(efx, "scheduling reset (%d:%d)\n", type, method);
+ EFX_LOG(efx, "scheduling %s reset for %s\n",
+ RESET_TYPE(method), RESET_TYPE(type));
else
- EFX_LOG(efx, "scheduling reset (%d)\n", method);
+ EFX_LOG(efx, "scheduling %s reset\n", RESET_TYPE(method));
efx->reset_pending = method;
/**************************************************************************
*
- * Dummy PHY/MAC/Board operations
+ * Dummy PHY/MAC operations
*
* Can be used for some unimplemented operations
* Needed so all function pointers are valid and do not have to be tested
return 0;
}
void efx_port_dummy_op_void(struct efx_nic *efx) {}
-void efx_port_dummy_op_blink(struct efx_nic *efx, bool blink) {}
+void efx_port_dummy_op_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
+{
+}
static struct efx_mac_operations efx_dummy_mac_operations = {
.reconfigure = efx_port_dummy_op_void,
- .poll = efx_port_dummy_op_void,
- .irq = efx_port_dummy_op_void,
};
static struct efx_phy_operations efx_dummy_phy_operations = {
.clear_interrupt = efx_port_dummy_op_void,
};
-static struct efx_board efx_dummy_board_info = {
- .init = efx_port_dummy_op_int,
- .init_leds = efx_port_dummy_op_void,
- .set_id_led = efx_port_dummy_op_blink,
- .monitor = efx_port_dummy_op_int,
- .blink = efx_port_dummy_op_blink,
- .fini = efx_port_dummy_op_void,
-};
-
/**************************************************************************
*
* Data housekeeping
efx->state = STATE_INIT;
efx->reset_pending = RESET_TYPE_NONE;
strlcpy(efx->name, pci_name(pci_dev), sizeof(efx->name));
- efx->board_info = efx_dummy_board_info;
efx->net_dev = net_dev;
efx->rx_checksum_enabled = true;
spin_lock_init(&efx->netif_stop_lock);
spin_lock_init(&efx->stats_lock);
- efx->stats_disable_count = 1;
mutex_init(&efx->mac_lock);
efx->mac_op = &efx_dummy_mac_operations;
efx->phy_op = &efx_dummy_phy_operations;
efx->type = type;
- /* Sanity-check NIC type */
- EFX_BUG_ON_PARANOID(efx->type->txd_ring_mask &
- (efx->type->txd_ring_mask + 1));
- EFX_BUG_ON_PARANOID(efx->type->rxd_ring_mask &
- (efx->type->rxd_ring_mask + 1));
- EFX_BUG_ON_PARANOID(efx->type->evq_size &
- (efx->type->evq_size - 1));
/* As close as we can get to guaranteeing that we don't overflow */
- EFX_BUG_ON_PARANOID(efx->type->evq_size <
- (efx->type->txd_ring_mask + 1 +
- efx->type->rxd_ring_mask + 1));
+ BUILD_BUG_ON(EFX_EVQ_SIZE < EFX_TXQ_SIZE + EFX_RXQ_SIZE);
+
EFX_BUG_ON_PARANOID(efx->type->phys_addr_channels > EFX_MAX_CHANNELS);
/* Higher numbered interrupt modes are less capable! */
*/
static void efx_pci_remove_main(struct efx_nic *efx)
{
- EFX_ASSERT_RESET_SERIALISED(efx);
-
- /* Skip everything if we never obtained a valid membase */
- if (!efx->membase)
- return;
-
+ falcon_fini_interrupt(efx);
efx_fini_channels(efx);
efx_fini_port(efx);
-
- /* Shutdown the board, then the NIC and board state */
- efx->board_info.fini(efx);
- falcon_fini_interrupt(efx);
-
efx_fini_napi(efx);
efx_remove_all(efx);
}
/* Allow any queued efx_resets() to complete */
rtnl_unlock();
- if (efx->membase == NULL)
- goto out;
-
efx_unregister_netdev(efx);
efx_mtd_remove(efx);
efx_pci_remove_main(efx);
-out:
efx_fini_io(efx);
EFX_LOG(efx, "shutdown successful\n");
if (rc)
goto fail2;
- /* Initialise the board */
- rc = efx->board_info.init(efx);
- if (rc) {
- EFX_ERR(efx, "failed to initialise board\n");
- goto fail3;
- }
-
rc = falcon_init_nic(efx);
if (rc) {
EFX_ERR(efx, "failed to initialise NIC\n");
- goto fail4;
+ goto fail3;
}
rc = efx_init_port(efx);
if (rc) {
EFX_ERR(efx, "failed to initialise port\n");
- goto fail5;
+ goto fail4;
}
efx_init_channels(efx);
rc = falcon_init_interrupt(efx);
if (rc)
- goto fail6;
+ goto fail5;
return 0;
- fail6:
+ fail5:
efx_fini_channels(efx);
efx_fini_port(efx);
- fail5:
fail4:
- efx->board_info.fini(efx);
fail3:
efx_fini_napi(efx);
fail2:
goto fail4;
}
- /* Switch to the running state before we expose the device to
- * the OS. This is to ensure that the initial gathering of
- * MAC stats succeeds. */
+ /* Switch to the running state before we expose the device to the OS,
+ * so that dev_open()|efx_start_all() will actually start the device */
efx->state = STATE_RUNNING;
- efx_mtd_probe(efx); /* allowed to fail */
-
rc = efx_register_netdev(efx);
if (rc)
goto fail5;
EFX_LOG(efx, "initialisation successful\n");
+
+ rtnl_lock();
+ efx_mtd_probe(efx); /* allowed to fail */
+ rtnl_unlock();
return 0;
fail5:
git.openpandora.org / pandora-kernel.git / blobdiff