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path: root/drivers/net/ethernet/nvidia/forcedeth.c
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Diffstat (limited to 'drivers/net/ethernet/nvidia/forcedeth.c')
-rw-r--r--drivers/net/ethernet/nvidia/forcedeth.c511
1 files changed, 413 insertions, 98 deletions
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 1dca57013cb2..4c4e7f458383 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -65,7 +65,8 @@
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/prefetch.h>
-#include <linux/io.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/io.h>
#include <asm/irq.h>
#include <asm/system.h>
@@ -609,7 +610,7 @@ struct nv_ethtool_str {
};
static const struct nv_ethtool_str nv_estats_str[] = {
- { "tx_bytes" },
+ { "tx_bytes" }, /* includes Ethernet FCS CRC */
{ "tx_zero_rexmt" },
{ "tx_one_rexmt" },
{ "tx_many_rexmt" },
@@ -637,7 +638,7 @@ static const struct nv_ethtool_str nv_estats_str[] = {
/* version 2 stats */
{ "tx_deferral" },
{ "tx_packets" },
- { "rx_bytes" },
+ { "rx_bytes" }, /* includes Ethernet FCS CRC */
{ "tx_pause" },
{ "rx_pause" },
{ "rx_drop_frame" },
@@ -649,7 +650,7 @@ static const struct nv_ethtool_str nv_estats_str[] = {
};
struct nv_ethtool_stats {
- u64 tx_bytes;
+ u64 tx_bytes; /* should be ifconfig->tx_bytes + 4*tx_packets */
u64 tx_zero_rexmt;
u64 tx_one_rexmt;
u64 tx_many_rexmt;
@@ -670,14 +671,14 @@ struct nv_ethtool_stats {
u64 rx_unicast;
u64 rx_multicast;
u64 rx_broadcast;
- u64 rx_packets;
+ u64 rx_packets; /* should be ifconfig->rx_packets */
u64 rx_errors_total;
u64 tx_errors_total;
/* version 2 stats */
u64 tx_deferral;
- u64 tx_packets;
- u64 rx_bytes;
+ u64 tx_packets; /* should be ifconfig->tx_packets */
+ u64 rx_bytes; /* should be ifconfig->rx_bytes + 4*rx_packets */
u64 tx_pause;
u64 rx_pause;
u64 rx_drop_frame;
@@ -736,6 +737,16 @@ struct nv_skb_map {
* - tx setup is lockless: it relies on netif_tx_lock. Actual submission
* needs netdev_priv(dev)->lock :-(
* - set_multicast_list: preparation lockless, relies on netif_tx_lock.
+ *
+ * Hardware stats updates are protected by hwstats_lock:
+ * - updated by nv_do_stats_poll (timer). This is meant to avoid
+ * integer wraparound in the NIC stats registers, at low frequency
+ * (0.1 Hz)
+ * - updated by nv_get_ethtool_stats + nv_get_stats64
+ *
+ * Software stats are accessed only through 64b synchronization points
+ * and are not subject to other synchronization techniques (single
+ * update thread on the TX or RX paths).
*/
/* in dev: base, irq */
@@ -745,9 +756,10 @@ struct fe_priv {
struct net_device *dev;
struct napi_struct napi;
- /* General data:
- * Locking: spin_lock(&np->lock); */
+ /* hardware stats are updated in syscall and timer */
+ spinlock_t hwstats_lock;
struct nv_ethtool_stats estats;
+
int in_shutdown;
u32 linkspeed;
int duplex;
@@ -798,6 +810,13 @@ struct fe_priv {
u32 nic_poll_irq;
int rx_ring_size;
+ /* RX software stats */
+ struct u64_stats_sync swstats_rx_syncp;
+ u64 stat_rx_packets;
+ u64 stat_rx_bytes; /* not always available in HW */
+ u64 stat_rx_missed_errors;
+ u64 stat_rx_dropped;
+
/* media detection workaround.
* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
*/
@@ -820,6 +839,12 @@ struct fe_priv {
struct nv_skb_map *tx_end_flip;
int tx_stop;
+ /* TX software stats */
+ struct u64_stats_sync swstats_tx_syncp;
+ u64 stat_tx_packets; /* not always available in HW */
+ u64 stat_tx_bytes;
+ u64 stat_tx_dropped;
+
/* msi/msi-x fields */
u32 msi_flags;
struct msix_entry msi_x_entry[NV_MSI_X_MAX_VECTORS];
@@ -892,6 +917,11 @@ enum {
static int dma_64bit = NV_DMA_64BIT_ENABLED;
/*
+ * Debug output control for tx_timeout
+ */
+static bool debug_tx_timeout = false;
+
+/*
* Crossover Detection
* Realtek 8201 phy + some OEM boards do not work properly.
*/
@@ -1630,11 +1660,19 @@ static void nv_mac_reset(struct net_device *dev)
pci_push(base);
}
-static void nv_get_hw_stats(struct net_device *dev)
+/* Caller must appropriately lock netdev_priv(dev)->hwstats_lock */
+static void nv_update_stats(struct net_device *dev)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
+ /* If it happens that this is run in top-half context, then
+ * replace the spin_lock of hwstats_lock with
+ * spin_lock_irqsave() in calling functions. */
+ WARN_ONCE(in_irq(), "forcedeth: estats spin_lock(_bh) from top-half");
+ assert_spin_locked(&np->hwstats_lock);
+
+ /* query hardware */
np->estats.tx_bytes += readl(base + NvRegTxCnt);
np->estats.tx_zero_rexmt += readl(base + NvRegTxZeroReXmt);
np->estats.tx_one_rexmt += readl(base + NvRegTxOneReXmt);
@@ -1693,33 +1731,73 @@ static void nv_get_hw_stats(struct net_device *dev)
}
/*
- * nv_get_stats: dev->get_stats function
+ * nv_get_stats64: dev->ndo_get_stats64 function
* Get latest stats value from the nic.
* Called with read_lock(&dev_base_lock) held for read -
* only synchronized against unregister_netdevice.
*/
-static struct net_device_stats *nv_get_stats(struct net_device *dev)
+static struct rtnl_link_stats64*
+nv_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *storage)
+ __acquires(&netdev_priv(dev)->hwstats_lock)
+ __releases(&netdev_priv(dev)->hwstats_lock)
{
struct fe_priv *np = netdev_priv(dev);
+ unsigned int syncp_start;
+
+ /*
+ * Note: because HW stats are not always available and for
+ * consistency reasons, the following ifconfig stats are
+ * managed by software: rx_bytes, tx_bytes, rx_packets and
+ * tx_packets. The related hardware stats reported by ethtool
+ * should be equivalent to these ifconfig stats, with 4
+ * additional bytes per packet (Ethernet FCS CRC), except for
+ * tx_packets when TSO kicks in.
+ */
+
+ /* software stats */
+ do {
+ syncp_start = u64_stats_fetch_begin_bh(&np->swstats_rx_syncp);
+ storage->rx_packets = np->stat_rx_packets;
+ storage->rx_bytes = np->stat_rx_bytes;
+ storage->rx_dropped = np->stat_rx_dropped;
+ storage->rx_missed_errors = np->stat_rx_missed_errors;
+ } while (u64_stats_fetch_retry_bh(&np->swstats_rx_syncp, syncp_start));
+
+ do {
+ syncp_start = u64_stats_fetch_begin_bh(&np->swstats_tx_syncp);
+ storage->tx_packets = np->stat_tx_packets;
+ storage->tx_bytes = np->stat_tx_bytes;
+ storage->tx_dropped = np->stat_tx_dropped;
+ } while (u64_stats_fetch_retry_bh(&np->swstats_tx_syncp, syncp_start));
/* If the nic supports hw counters then retrieve latest values */
- if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2|DEV_HAS_STATISTICS_V3)) {
- nv_get_hw_stats(dev);
-
- /* copy to net_device stats */
- dev->stats.tx_packets = np->estats.tx_packets;
- dev->stats.rx_bytes = np->estats.rx_bytes;
- dev->stats.tx_bytes = np->estats.tx_bytes;
- dev->stats.tx_fifo_errors = np->estats.tx_fifo_errors;
- dev->stats.tx_carrier_errors = np->estats.tx_carrier_errors;
- dev->stats.rx_crc_errors = np->estats.rx_crc_errors;
- dev->stats.rx_over_errors = np->estats.rx_over_errors;
- dev->stats.rx_fifo_errors = np->estats.rx_drop_frame;
- dev->stats.rx_errors = np->estats.rx_errors_total;
- dev->stats.tx_errors = np->estats.tx_errors_total;
- }
-
- return &dev->stats;
+ if (np->driver_data & DEV_HAS_STATISTICS_V123) {
+ spin_lock_bh(&np->hwstats_lock);
+
+ nv_update_stats(dev);
+
+ /* generic stats */
+ storage->rx_errors = np->estats.rx_errors_total;
+ storage->tx_errors = np->estats.tx_errors_total;
+
+ /* meaningful only when NIC supports stats v3 */
+ storage->multicast = np->estats.rx_multicast;
+
+ /* detailed rx_errors */
+ storage->rx_length_errors = np->estats.rx_length_error;
+ storage->rx_over_errors = np->estats.rx_over_errors;
+ storage->rx_crc_errors = np->estats.rx_crc_errors;
+ storage->rx_frame_errors = np->estats.rx_frame_align_error;
+ storage->rx_fifo_errors = np->estats.rx_drop_frame;
+
+ /* detailed tx_errors */
+ storage->tx_carrier_errors = np->estats.tx_carrier_errors;
+ storage->tx_fifo_errors = np->estats.tx_fifo_errors;
+
+ spin_unlock_bh(&np->hwstats_lock);
+ }
+
+ return storage;
}
/*
@@ -1752,8 +1830,12 @@ static int nv_alloc_rx(struct net_device *dev)
np->put_rx.orig = np->first_rx.orig;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
- } else
+ } else {
+ u64_stats_update_begin(&np->swstats_rx_syncp);
+ np->stat_rx_dropped++;
+ u64_stats_update_end(&np->swstats_rx_syncp);
return 1;
+ }
}
return 0;
}
@@ -1784,8 +1866,12 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
np->put_rx.ex = np->first_rx.ex;
if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
np->put_rx_ctx = np->first_rx_ctx;
- } else
+ } else {
+ u64_stats_update_begin(&np->swstats_rx_syncp);
+ np->stat_rx_dropped++;
+ u64_stats_update_end(&np->swstats_rx_syncp);
return 1;
+ }
}
return 0;
}
@@ -1842,6 +1928,7 @@ static void nv_init_tx(struct net_device *dev)
np->last_tx.ex = &np->tx_ring.ex[np->tx_ring_size-1];
np->get_tx_ctx = np->put_tx_ctx = np->first_tx_ctx = np->tx_skb;
np->last_tx_ctx = &np->tx_skb[np->tx_ring_size-1];
+ netdev_reset_queue(np->dev);
np->tx_pkts_in_progress = 0;
np->tx_change_owner = NULL;
np->tx_end_flip = NULL;
@@ -1920,8 +2007,11 @@ static void nv_drain_tx(struct net_device *dev)
np->tx_ring.ex[i].bufhigh = 0;
np->tx_ring.ex[i].buflow = 0;
}
- if (nv_release_txskb(np, &np->tx_skb[i]))
- dev->stats.tx_dropped++;
+ if (nv_release_txskb(np, &np->tx_skb[i])) {
+ u64_stats_update_begin(&np->swstats_tx_syncp);
+ np->stat_tx_dropped++;
+ u64_stats_update_end(&np->swstats_tx_syncp);
+ }
np->tx_skb[i].dma = 0;
np->tx_skb[i].dma_len = 0;
np->tx_skb[i].dma_single = 0;
@@ -2187,6 +2277,9 @@ static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* set tx flags */
start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
+
+ netdev_sent_queue(np->dev, skb->len);
+
np->put_tx.orig = put_tx;
spin_unlock_irqrestore(&np->lock, flags);
@@ -2331,6 +2424,9 @@ static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
/* set tx flags */
start_tx->flaglen |= cpu_to_le32(tx_flags | tx_flags_extra);
+
+ netdev_sent_queue(np->dev, skb->len);
+
np->put_tx.ex = put_tx;
spin_unlock_irqrestore(&np->lock, flags);
@@ -2368,6 +2464,7 @@ static int nv_tx_done(struct net_device *dev, int limit)
u32 flags;
int tx_work = 0;
struct ring_desc *orig_get_tx = np->get_tx.orig;
+ unsigned int bytes_compl = 0;
while ((np->get_tx.orig != np->put_tx.orig) &&
!((flags = le32_to_cpu(np->get_tx.orig->flaglen)) & NV_TX_VALID) &&
@@ -2378,9 +2475,16 @@ static int nv_tx_done(struct net_device *dev, int limit)
if (np->desc_ver == DESC_VER_1) {
if (flags & NV_TX_LASTPACKET) {
if (flags & NV_TX_ERROR) {
- if ((flags & NV_TX_RETRYERROR) && !(flags & NV_TX_RETRYCOUNT_MASK))
+ if ((flags & NV_TX_RETRYERROR)
+ && !(flags & NV_TX_RETRYCOUNT_MASK))
nv_legacybackoff_reseed(dev);
+ } else {
+ u64_stats_update_begin(&np->swstats_tx_syncp);
+ np->stat_tx_packets++;
+ np->stat_tx_bytes += np->get_tx_ctx->skb->len;
+ u64_stats_update_end(&np->swstats_tx_syncp);
}
+ bytes_compl += np->get_tx_ctx->skb->len;
dev_kfree_skb_any(np->get_tx_ctx->skb);
np->get_tx_ctx->skb = NULL;
tx_work++;
@@ -2388,9 +2492,16 @@ static int nv_tx_done(struct net_device *dev, int limit)
} else {
if (flags & NV_TX2_LASTPACKET) {
if (flags & NV_TX2_ERROR) {
- if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK))
+ if ((flags & NV_TX2_RETRYERROR)
+ && !(flags & NV_TX2_RETRYCOUNT_MASK))
nv_legacybackoff_reseed(dev);
+ } else {
+ u64_stats_update_begin(&np->swstats_tx_syncp);
+ np->stat_tx_packets++;
+ np->stat_tx_bytes += np->get_tx_ctx->skb->len;
+ u64_stats_update_end(&np->swstats_tx_syncp);
}
+ bytes_compl += np->get_tx_ctx->skb->len;
dev_kfree_skb_any(np->get_tx_ctx->skb);
np->get_tx_ctx->skb = NULL;
tx_work++;
@@ -2401,6 +2512,9 @@ static int nv_tx_done(struct net_device *dev, int limit)
if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
np->get_tx_ctx = np->first_tx_ctx;
}
+
+ netdev_completed_queue(np->dev, tx_work, bytes_compl);
+
if (unlikely((np->tx_stop == 1) && (np->get_tx.orig != orig_get_tx))) {
np->tx_stop = 0;
netif_wake_queue(dev);
@@ -2414,6 +2528,7 @@ static int nv_tx_done_optimized(struct net_device *dev, int limit)
u32 flags;
int tx_work = 0;
struct ring_desc_ex *orig_get_tx = np->get_tx.ex;
+ unsigned long bytes_cleaned = 0;
while ((np->get_tx.ex != np->put_tx.ex) &&
!((flags = le32_to_cpu(np->get_tx.ex->flaglen)) & NV_TX2_VALID) &&
@@ -2423,14 +2538,21 @@ static int nv_tx_done_optimized(struct net_device *dev, int limit)
if (flags & NV_TX2_LASTPACKET) {
if (flags & NV_TX2_ERROR) {
- if ((flags & NV_TX2_RETRYERROR) && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
+ if ((flags & NV_TX2_RETRYERROR)
+ && !(flags & NV_TX2_RETRYCOUNT_MASK)) {
if (np->driver_data & DEV_HAS_GEAR_MODE)
nv_gear_backoff_reseed(dev);
else
nv_legacybackoff_reseed(dev);
}
+ } else {
+ u64_stats_update_begin(&np->swstats_tx_syncp);
+ np->stat_tx_packets++;
+ np->stat_tx_bytes += np->get_tx_ctx->skb->len;
+ u64_stats_update_end(&np->swstats_tx_syncp);
}
+ bytes_cleaned += np->get_tx_ctx->skb->len;
dev_kfree_skb_any(np->get_tx_ctx->skb);
np->get_tx_ctx->skb = NULL;
tx_work++;
@@ -2438,11 +2560,15 @@ static int nv_tx_done_optimized(struct net_device *dev, int limit)
if (np->tx_limit)
nv_tx_flip_ownership(dev);
}
+
if (unlikely(np->get_tx.ex++ == np->last_tx.ex))
np->get_tx.ex = np->first_tx.ex;
if (unlikely(np->get_tx_ctx++ == np->last_tx_ctx))
np->get_tx_ctx = np->first_tx_ctx;
}
+
+ netdev_completed_queue(np->dev, tx_work, bytes_cleaned);
+
if (unlikely((np->tx_stop == 1) && (np->get_tx.ex != orig_get_tx))) {
np->tx_stop = 0;
netif_wake_queue(dev);
@@ -2461,56 +2587,64 @@ static void nv_tx_timeout(struct net_device *dev)
u32 status;
union ring_type put_tx;
int saved_tx_limit;
- int i;
if (np->msi_flags & NV_MSI_X_ENABLED)
status = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
else
status = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
- netdev_info(dev, "Got tx_timeout. irq: %08x\n", status);
+ netdev_warn(dev, "Got tx_timeout. irq status: %08x\n", status);
- netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
- netdev_info(dev, "Dumping tx registers\n");
- for (i = 0; i <= np->register_size; i += 32) {
- netdev_info(dev,
- "%3x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
- i,
- readl(base + i + 0), readl(base + i + 4),
- readl(base + i + 8), readl(base + i + 12),
- readl(base + i + 16), readl(base + i + 20),
- readl(base + i + 24), readl(base + i + 28));
- }
- netdev_info(dev, "Dumping tx ring\n");
- for (i = 0; i < np->tx_ring_size; i += 4) {
- if (!nv_optimized(np)) {
- netdev_info(dev,
- "%03x: %08x %08x // %08x %08x // %08x %08x // %08x %08x\n",
- i,
- le32_to_cpu(np->tx_ring.orig[i].buf),
- le32_to_cpu(np->tx_ring.orig[i].flaglen),
- le32_to_cpu(np->tx_ring.orig[i+1].buf),
- le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
- le32_to_cpu(np->tx_ring.orig[i+2].buf),
- le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
- le32_to_cpu(np->tx_ring.orig[i+3].buf),
- le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
- } else {
+ if (unlikely(debug_tx_timeout)) {
+ int i;
+
+ netdev_info(dev, "Ring at %lx\n", (unsigned long)np->ring_addr);
+ netdev_info(dev, "Dumping tx registers\n");
+ for (i = 0; i <= np->register_size; i += 32) {
netdev_info(dev,
- "%03x: %08x %08x %08x // %08x %08x %08x // %08x %08x %08x // %08x %08x %08x\n",
+ "%3x: %08x %08x %08x %08x "
+ "%08x %08x %08x %08x\n",
i,
- le32_to_cpu(np->tx_ring.ex[i].bufhigh),
- le32_to_cpu(np->tx_ring.ex[i].buflow),
- le32_to_cpu(np->tx_ring.ex[i].flaglen),
- le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
- le32_to_cpu(np->tx_ring.ex[i+1].buflow),
- le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
- le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
- le32_to_cpu(np->tx_ring.ex[i+2].buflow),
- le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
- le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
- le32_to_cpu(np->tx_ring.ex[i+3].buflow),
- le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
+ readl(base + i + 0), readl(base + i + 4),
+ readl(base + i + 8), readl(base + i + 12),
+ readl(base + i + 16), readl(base + i + 20),
+ readl(base + i + 24), readl(base + i + 28));
+ }
+ netdev_info(dev, "Dumping tx ring\n");
+ for (i = 0; i < np->tx_ring_size; i += 4) {
+ if (!nv_optimized(np)) {
+ netdev_info(dev,
+ "%03x: %08x %08x // %08x %08x "
+ "// %08x %08x // %08x %08x\n",
+ i,
+ le32_to_cpu(np->tx_ring.orig[i].buf),
+ le32_to_cpu(np->tx_ring.orig[i].flaglen),
+ le32_to_cpu(np->tx_ring.orig[i+1].buf),
+ le32_to_cpu(np->tx_ring.orig[i+1].flaglen),
+ le32_to_cpu(np->tx_ring.orig[i+2].buf),
+ le32_to_cpu(np->tx_ring.orig[i+2].flaglen),
+ le32_to_cpu(np->tx_ring.orig[i+3].buf),
+ le32_to_cpu(np->tx_ring.orig[i+3].flaglen));
+ } else {
+ netdev_info(dev,
+ "%03x: %08x %08x %08x "
+ "// %08x %08x %08x "
+ "// %08x %08x %08x "
+ "// %08x %08x %08x\n",
+ i,
+ le32_to_cpu(np->tx_ring.ex[i].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i].buflow),
+ le32_to_cpu(np->tx_ring.ex[i].flaglen),
+ le32_to_cpu(np->tx_ring.ex[i+1].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i+1].buflow),
+ le32_to_cpu(np->tx_ring.ex[i+1].flaglen),
+ le32_to_cpu(np->tx_ring.ex[i+2].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i+2].buflow),
+ le32_to_cpu(np->tx_ring.ex[i+2].flaglen),
+ le32_to_cpu(np->tx_ring.ex[i+3].bufhigh),
+ le32_to_cpu(np->tx_ring.ex[i+3].buflow),
+ le32_to_cpu(np->tx_ring.ex[i+3].flaglen));
+ }
}
}
@@ -2633,8 +2767,11 @@ static int nv_rx_process(struct net_device *dev, int limit)
}
/* the rest are hard errors */
else {
- if (flags & NV_RX_MISSEDFRAME)
- dev->stats.rx_missed_errors++;
+ if (flags & NV_RX_MISSEDFRAME) {
+ u64_stats_update_begin(&np->swstats_rx_syncp);
+ np->stat_rx_missed_errors++;
+ u64_stats_update_end(&np->swstats_rx_syncp);
+ }
dev_kfree_skb(skb);
goto next_pkt;
}
@@ -2677,7 +2814,10 @@ static int nv_rx_process(struct net_device *dev, int limit)
skb_put(skb, len);
skb->protocol = eth_type_trans(skb, dev);
napi_gro_receive(&np->napi, skb);
- dev->stats.rx_packets++;
+ u64_stats_update_begin(&np->swstats_rx_syncp);
+ np->stat_rx_packets++;
+ np->stat_rx_bytes += len;
+ u64_stats_update_end(&np->swstats_rx_syncp);
next_pkt:
if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
np->get_rx.orig = np->first_rx.orig;
@@ -2760,7 +2900,10 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
__vlan_hwaccel_put_tag(skb, vid);
}
napi_gro_receive(&np->napi, skb);
- dev->stats.rx_packets++;
+ u64_stats_update_begin(&np->swstats_rx_syncp);
+ np->stat_rx_packets++;
+ np->stat_rx_bytes += len;
+ u64_stats_update_end(&np->swstats_rx_syncp);
} else {
dev_kfree_skb(skb);
}
@@ -3003,6 +3146,73 @@ static void nv_update_pause(struct net_device *dev, u32 pause_flags)
}
}
+static void nv_force_linkspeed(struct net_device *dev, int speed, int duplex)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ u8 __iomem *base = get_hwbase(dev);
+ u32 phyreg, txreg;
+ int mii_status;
+
+ np->linkspeed = NVREG_LINKSPEED_FORCE|speed;
+ np->duplex = duplex;
+
+ /* see if gigabit phy */
+ mii_status = mii_rw(dev, np->phyaddr, MII_BMSR, MII_READ);
+ if (mii_status & PHY_GIGABIT) {
+ np->gigabit = PHY_GIGABIT;
+ phyreg = readl(base + NvRegSlotTime);
+ phyreg &= ~(0x3FF00);
+ if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_10)
+ phyreg |= NVREG_SLOTTIME_10_100_FULL;
+ else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_100)
+ phyreg |= NVREG_SLOTTIME_10_100_FULL;
+ else if ((np->linkspeed & 0xFFF) == NVREG_LINKSPEED_1000)
+ phyreg |= NVREG_SLOTTIME_1000_FULL;
+ writel(phyreg, base + NvRegSlotTime);
+ }
+
+ phyreg = readl(base + NvRegPhyInterface);
+ phyreg &= ~(PHY_HALF|PHY_100|PHY_1000);
+ if (np->duplex == 0)
+ phyreg |= PHY_HALF;
+ if ((np->linkspeed & NVREG_LINKSPEED_MASK) == NVREG_LINKSPEED_100)
+ phyreg |= PHY_100;
+ else if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
+ NVREG_LINKSPEED_1000)
+ phyreg |= PHY_1000;
+ writel(phyreg, base + NvRegPhyInterface);
+
+ if (phyreg & PHY_RGMII) {
+ if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
+ NVREG_LINKSPEED_1000)
+ txreg = NVREG_TX_DEFERRAL_RGMII_1000;
+ else
+ txreg = NVREG_TX_DEFERRAL_RGMII_10_100;
+ } else {
+ txreg = NVREG_TX_DEFERRAL_DEFAULT;
+ }
+ writel(txreg, base + NvRegTxDeferral);
+
+ if (np->desc_ver == DESC_VER_1) {
+ txreg = NVREG_TX_WM_DESC1_DEFAULT;
+ } else {
+ if ((np->linkspeed & NVREG_LINKSPEED_MASK) ==
+ NVREG_LINKSPEED_1000)
+ txreg = NVREG_TX_WM_DESC2_3_1000;
+ else
+ txreg = NVREG_TX_WM_DESC2_3_DEFAULT;
+ }
+ writel(txreg, base + NvRegTxWatermark);
+
+ writel(NVREG_MISC1_FORCE | (np->duplex ? 0 : NVREG_MISC1_HD),
+ base + NvRegMisc1);
+ pci_push(base);
+ writel(np->linkspeed, base + NvRegLinkSpeed);
+ pci_push(base);
+
+ return;
+}
+
/**
* nv_update_linkspeed: Setup the MAC according to the link partner
* @dev: Network device to be configured
@@ -3024,11 +3234,25 @@ static int nv_update_linkspeed(struct net_device *dev)
int newls = np->linkspeed;
int newdup = np->duplex;
int mii_status;
+ u32 bmcr;
int retval = 0;
u32 control_1000, status_1000, phyreg, pause_flags, txreg;
u32 txrxFlags = 0;
u32 phy_exp;
+ /* If device loopback is enabled, set carrier on and enable max link
+ * speed.
+ */
+ bmcr = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ if (bmcr & BMCR_LOOPBACK) {
+ if (netif_running(dev)) {
+ nv_force_linkspeed(dev, NVREG_LINKSPEED_1000, 1);
+ if (!netif_carrier_ok(dev))
+ netif_carrier_on(dev);
+ }
+ return 1;
+ }
+
/* BMSR_LSTATUS is latched, read it twice:
* we want the current value.
*/
@@ -3711,6 +3935,7 @@ static int nv_request_irq(struct net_device *dev, int intr_test)
writel(0, base + NvRegMSIXMap0);
writel(0, base + NvRegMSIXMap1);
}
+ netdev_info(dev, "MSI-X enabled\n");
}
}
if (ret != 0 && np->msi_flags & NV_MSI_CAPABLE) {
@@ -3732,6 +3957,7 @@ static int nv_request_irq(struct net_device *dev, int intr_test)
writel(0, base + NvRegMSIMap1);
/* enable msi vector 0 */
writel(NVREG_MSI_VECTOR_0_ENABLED, base + NvRegMSIIrqMask);
+ netdev_info(dev, "MSI enabled\n");
}
}
if (ret != 0) {
@@ -3886,11 +4112,18 @@ static void nv_poll_controller(struct net_device *dev)
#endif
static void nv_do_stats_poll(unsigned long data)
+ __acquires(&netdev_priv(dev)->hwstats_lock)
+ __releases(&netdev_priv(dev)->hwstats_lock)
{
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
- nv_get_hw_stats(dev);
+ /* If lock is currently taken, the stats are being refreshed
+ * and hence fresh enough */
+ if (spin_trylock(&np->hwstats_lock)) {
+ nv_update_stats(dev);
+ spin_unlock(&np->hwstats_lock);
+ }
if (!np->in_shutdown)
mod_timer(&np->stats_poll,
@@ -3900,9 +4133,9 @@ static void nv_do_stats_poll(unsigned long data)
static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
struct fe_priv *np = netdev_priv(dev);
- strcpy(info->driver, DRV_NAME);
- strcpy(info->version, FORCEDETH_VERSION);
- strcpy(info->bus_info, pci_name(np->pci_dev));
+ strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
+ strlcpy(info->version, FORCEDETH_VERSION, sizeof(info->version));
+ strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
}
static void nv_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo)
@@ -4455,7 +4688,63 @@ static int nv_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam*
return 0;
}
-static u32 nv_fix_features(struct net_device *dev, u32 features)
+static int nv_set_loopback(struct net_device *dev, netdev_features_t features)
+{
+ struct fe_priv *np = netdev_priv(dev);
+ unsigned long flags;
+ u32 miicontrol;
+ int err, retval = 0;
+
+ spin_lock_irqsave(&np->lock, flags);
+ miicontrol = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ);
+ if (features & NETIF_F_LOOPBACK) {
+ if (miicontrol & BMCR_LOOPBACK) {
+ spin_unlock_irqrestore(&np->lock, flags);
+ netdev_info(dev, "Loopback already enabled\n");
+ return 0;
+ }
+ nv_disable_irq(dev);
+ /* Turn on loopback mode */
+ miicontrol |= BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED1000;
+ err = mii_rw(dev, np->phyaddr, MII_BMCR, miicontrol);
+ if (err) {
+ retval = PHY_ERROR;
+ spin_unlock_irqrestore(&np->lock, flags);
+ phy_init(dev);
+ } else {
+ if (netif_running(dev)) {
+ /* Force 1000 Mbps full-duplex */
+ nv_force_linkspeed(dev, NVREG_LINKSPEED_1000,
+ 1);
+ /* Force link up */
+ netif_carrier_on(dev);
+ }
+ spin_unlock_irqrestore(&np->lock, flags);
+ netdev_info(dev,
+ "Internal PHY loopback mode enabled.\n");
+ }
+ } else {
+ if (!(miicontrol & BMCR_LOOPBACK)) {
+ spin_unlock_irqrestore(&np->lock, flags);
+ netdev_info(dev, "Loopback already disabled\n");
+ return 0;
+ }
+ nv_disable_irq(dev);
+ /* Turn off loopback */
+ spin_unlock_irqrestore(&np->lock, flags);
+ netdev_info(dev, "Internal PHY loopback mode disabled.\n");
+ phy_init(dev);
+ }
+ msleep(500);
+ spin_lock_irqsave(&np->lock, flags);
+ nv_enable_irq(dev);
+ spin_unlock_irqrestore(&np->lock, flags);
+
+ return retval;
+}
+
+static netdev_features_t nv_fix_features(struct net_device *dev,
+ netdev_features_t features)
{
/* vlan is dependent on rx checksum offload */
if (features & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
@@ -4464,7 +4753,7 @@ static u32 nv_fix_features(struct net_device *dev, u32 features)
return features;
}
-static void nv_vlan_mode(struct net_device *dev, u32 features)
+static void nv_vlan_mode(struct net_device *dev, netdev_features_t features)
{
struct fe_priv *np = get_nvpriv(dev);
@@ -4485,11 +4774,18 @@ static void nv_vlan_mode(struct net_device *dev, u32 features)
spin_unlock_irq(&np->lock);
}
-static int nv_set_features(struct net_device *dev, u32 features)
+static int nv_set_features(struct net_device *dev, netdev_features_t features)
{
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
- u32 changed = dev->features ^ features;
+ netdev_features_t changed = dev->features ^ features;
+ int retval;
+
+ if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) {
+ retval = nv_set_loopback(dev, features);
+ if (retval != 0)
+ return retval;
+ }
if (changed & NETIF_F_RXCSUM) {
spin_lock_irq(&np->lock);
@@ -4535,14 +4831,18 @@ static int nv_get_sset_count(struct net_device *dev, int sset)
}
}
-static void nv_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *estats, u64 *buffer)
+static void nv_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *estats, u64 *buffer)
+ __acquires(&netdev_priv(dev)->hwstats_lock)
+ __releases(&netdev_priv(dev)->hwstats_lock)
{
struct fe_priv *np = netdev_priv(dev);
- /* update stats */
- nv_get_hw_stats(dev);
-
- memcpy(buffer, &np->estats, nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
+ spin_lock_bh(&np->hwstats_lock);
+ nv_update_stats(dev);
+ memcpy(buffer, &np->estats,
+ nv_get_sset_count(dev, ETH_SS_STATS)*sizeof(u64));
+ spin_unlock_bh(&np->hwstats_lock);
}
static int nv_link_test(struct net_device *dev)
@@ -5124,6 +5424,12 @@ static int nv_open(struct net_device *dev)
spin_unlock_irq(&np->lock);
+ /* If the loopback feature was set while the device was down, make sure
+ * that it's set correctly now.
+ */
+ if (dev->features & NETIF_F_LOOPBACK)
+ nv_set_loopback(dev, dev->features);
+
return 0;
out_drain:
nv_drain_rxtx(dev);
@@ -5180,7 +5486,7 @@ static int nv_close(struct net_device *dev)
static const struct net_device_ops nv_netdev_ops = {
.ndo_open = nv_open,
.ndo_stop = nv_close,
- .ndo_get_stats = nv_get_stats,
+ .ndo_get_stats64 = nv_get_stats64,
.ndo_start_xmit = nv_start_xmit,
.ndo_tx_timeout = nv_tx_timeout,
.ndo_change_mtu = nv_change_mtu,
@@ -5197,7 +5503,7 @@ static const struct net_device_ops nv_netdev_ops = {
static const struct net_device_ops nv_netdev_ops_optimized = {
.ndo_open = nv_open,
.ndo_stop = nv_close,
- .ndo_get_stats = nv_get_stats,
+ .ndo_get_stats64 = nv_get_stats64,
.ndo_start_xmit = nv_start_xmit_optimized,
.ndo_tx_timeout = nv_tx_timeout,
.ndo_change_mtu = nv_change_mtu,
@@ -5236,6 +5542,7 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
np->dev = dev;
np->pci_dev = pci_dev;
spin_lock_init(&np->lock);
+ spin_lock_init(&np->hwstats_lock);
SET_NETDEV_DEV(dev, &pci_dev->dev);
init_timer(&np->oom_kick);
@@ -5244,7 +5551,7 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
init_timer(&np->nic_poll);
np->nic_poll.data = (unsigned long) dev;
np->nic_poll.function = nv_do_nic_poll; /* timer handler */
- init_timer(&np->stats_poll);
+ init_timer_deferrable(&np->stats_poll);
np->stats_poll.data = (unsigned long) dev;
np->stats_poll.function = nv_do_stats_poll; /* timer handler */
@@ -5328,6 +5635,9 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
dev->features |= dev->hw_features;
+ /* Add loopback capability to the device. */
+ dev->hw_features |= NETIF_F_LOOPBACK;
+
np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;
if ((id->driver_data & DEV_HAS_PAUSEFRAME_TX_V1) ||
(id->driver_data & DEV_HAS_PAUSEFRAME_TX_V2) ||
@@ -5603,12 +5913,14 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
dev_info(&pci_dev->dev, "ifname %s, PHY OUI 0x%x @ %d, addr %pM\n",
dev->name, np->phy_oui, np->phyaddr, dev->dev_addr);
- dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
+ dev_info(&pci_dev->dev, "%s%s%s%s%s%s%s%s%s%s%sdesc-v%u\n",
dev->features & NETIF_F_HIGHDMA ? "highdma " : "",
dev->features & (NETIF_F_IP_CSUM | NETIF_F_SG) ?
"csum " : "",
dev->features & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX) ?
"vlan " : "",
+ dev->features & (NETIF_F_LOOPBACK) ?
+ "loopback " : "",
id->driver_data & DEV_HAS_POWER_CNTRL ? "pwrctl " : "",
id->driver_data & DEV_HAS_MGMT_UNIT ? "mgmt " : "",
id->driver_data & DEV_NEED_TIMERIRQ ? "timirq " : "",
@@ -5982,6 +6294,9 @@ module_param(phy_cross, int, 0);
MODULE_PARM_DESC(phy_cross, "Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0.");
module_param(phy_power_down, int, 0);
MODULE_PARM_DESC(phy_power_down, "Power down phy and disable link when interface is down (1), or leave phy powered up (0).");
+module_param(debug_tx_timeout, bool, 0);
+MODULE_PARM_DESC(debug_tx_timeout,
+ "Dump tx related registers and ring when tx_timeout happens");
MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-20 18:21:13 +0000