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path: root/drivers/net/ethernet/broadcom/bcmsysport.c
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Diffstat (limited to 'drivers/net/ethernet/broadcom/bcmsysport.c')
-rw-r--r--drivers/net/ethernet/broadcom/bcmsysport.c130
1 files changed, 111 insertions, 19 deletions
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 3fc549b88c43..4a75b1de22e0 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -574,6 +574,34 @@ static int bcm_sysport_set_wol(struct net_device *dev,
return 0;
}
+static void bcm_sysport_set_rx_coalesce(struct bcm_sysport_priv *priv,
+ u32 usecs, u32 pkts)
+{
+ u32 reg;
+
+ reg = rdma_readl(priv, RDMA_MBDONE_INTR);
+ reg &= ~(RDMA_INTR_THRESH_MASK |
+ RDMA_TIMEOUT_MASK << RDMA_TIMEOUT_SHIFT);
+ reg |= pkts;
+ reg |= DIV_ROUND_UP(usecs * 1000, 8192) << RDMA_TIMEOUT_SHIFT;
+ rdma_writel(priv, reg, RDMA_MBDONE_INTR);
+}
+
+static void bcm_sysport_set_tx_coalesce(struct bcm_sysport_tx_ring *ring,
+ struct ethtool_coalesce *ec)
+{
+ struct bcm_sysport_priv *priv = ring->priv;
+ u32 reg;
+
+ reg = tdma_readl(priv, TDMA_DESC_RING_INTR_CONTROL(ring->index));
+ reg &= ~(RING_INTR_THRESH_MASK |
+ RING_TIMEOUT_MASK << RING_TIMEOUT_SHIFT);
+ reg |= ec->tx_max_coalesced_frames;
+ reg |= DIV_ROUND_UP(ec->tx_coalesce_usecs * 1000, 8192) <<
+ RING_TIMEOUT_SHIFT;
+ tdma_writel(priv, reg, TDMA_DESC_RING_INTR_CONTROL(ring->index));
+}
+
static int bcm_sysport_get_coalesce(struct net_device *dev,
struct ethtool_coalesce *ec)
{
@@ -589,6 +617,7 @@ static int bcm_sysport_get_coalesce(struct net_device *dev,
ec->rx_coalesce_usecs = (reg >> RDMA_TIMEOUT_SHIFT) * 8192 / 1000;
ec->rx_max_coalesced_frames = reg & RDMA_INTR_THRESH_MASK;
+ ec->use_adaptive_rx_coalesce = priv->dim.use_dim;
return 0;
}
@@ -597,8 +626,9 @@ static int bcm_sysport_set_coalesce(struct net_device *dev,
struct ethtool_coalesce *ec)
{
struct bcm_sysport_priv *priv = netdev_priv(dev);
+ struct net_dim_cq_moder moder;
+ u32 usecs, pkts;
unsigned int i;
- u32 reg;
/* Base system clock is 125Mhz, DMA timeout is this reference clock
* divided by 1024, which yield roughly 8.192 us, our maximum value has
@@ -611,26 +641,28 @@ static int bcm_sysport_set_coalesce(struct net_device *dev,
return -EINVAL;
if ((ec->tx_coalesce_usecs == 0 && ec->tx_max_coalesced_frames == 0) ||
- (ec->rx_coalesce_usecs == 0 && ec->rx_max_coalesced_frames == 0))
+ (ec->rx_coalesce_usecs == 0 && ec->rx_max_coalesced_frames == 0) ||
+ ec->use_adaptive_tx_coalesce)
return -EINVAL;
- for (i = 0; i < dev->num_tx_queues; i++) {
- reg = tdma_readl(priv, TDMA_DESC_RING_INTR_CONTROL(i));
- reg &= ~(RING_INTR_THRESH_MASK |
- RING_TIMEOUT_MASK << RING_TIMEOUT_SHIFT);
- reg |= ec->tx_max_coalesced_frames;
- reg |= DIV_ROUND_UP(ec->tx_coalesce_usecs * 1000, 8192) <<
- RING_TIMEOUT_SHIFT;
- tdma_writel(priv, reg, TDMA_DESC_RING_INTR_CONTROL(i));
+ for (i = 0; i < dev->num_tx_queues; i++)
+ bcm_sysport_set_tx_coalesce(&priv->tx_rings[i], ec);
+
+ priv->rx_coalesce_usecs = ec->rx_coalesce_usecs;
+ priv->rx_max_coalesced_frames = ec->rx_max_coalesced_frames;
+ usecs = priv->rx_coalesce_usecs;
+ pkts = priv->rx_max_coalesced_frames;
+
+ if (ec->use_adaptive_rx_coalesce && !priv->dim.use_dim) {
+ moder = net_dim_get_def_profile(priv->dim.dim.mode);
+ usecs = moder.usec;
+ pkts = moder.pkts;
}
- reg = rdma_readl(priv, RDMA_MBDONE_INTR);
- reg &= ~(RDMA_INTR_THRESH_MASK |
- RDMA_TIMEOUT_MASK << RDMA_TIMEOUT_SHIFT);
- reg |= ec->rx_max_coalesced_frames;
- reg |= DIV_ROUND_UP(ec->rx_coalesce_usecs * 1000, 8192) <<
- RDMA_TIMEOUT_SHIFT;
- rdma_writel(priv, reg, RDMA_MBDONE_INTR);
+ priv->dim.use_dim = ec->use_adaptive_rx_coalesce;
+
+ /* Apply desired coalescing parameters */
+ bcm_sysport_set_rx_coalesce(priv, usecs, pkts);
return 0;
}
@@ -709,6 +741,7 @@ static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv *priv,
struct bcm_sysport_stats64 *stats64 = &priv->stats64;
struct net_device *ndev = priv->netdev;
unsigned int processed = 0, to_process;
+ unsigned int processed_bytes = 0;
struct bcm_sysport_cb *cb;
struct sk_buff *skb;
unsigned int p_index;
@@ -800,6 +833,7 @@ static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv *priv,
*/
skb_pull(skb, sizeof(*rsb) + 2);
len -= (sizeof(*rsb) + 2);
+ processed_bytes += len;
/* UniMAC may forward CRC */
if (priv->crc_fwd) {
@@ -824,6 +858,9 @@ next:
priv->rx_read_ptr = 0;
}
+ priv->dim.packets = processed;
+ priv->dim.bytes = processed_bytes;
+
return processed;
}
@@ -972,6 +1009,7 @@ static int bcm_sysport_poll(struct napi_struct *napi, int budget)
{
struct bcm_sysport_priv *priv =
container_of(napi, struct bcm_sysport_priv, napi);
+ struct net_dim_sample dim_sample;
unsigned int work_done = 0;
work_done = bcm_sysport_desc_rx(priv, budget);
@@ -994,6 +1032,12 @@ static int bcm_sysport_poll(struct napi_struct *napi, int budget)
intrl2_0_mask_clear(priv, INTRL2_0_RDMA_MBDONE);
}
+ if (priv->dim.use_dim) {
+ net_dim_sample(priv->dim.event_ctr, priv->dim.packets,
+ priv->dim.bytes, &dim_sample);
+ net_dim(&priv->dim.dim, dim_sample);
+ }
+
return work_done;
}
@@ -1012,6 +1056,20 @@ static void bcm_sysport_resume_from_wol(struct bcm_sysport_priv *priv)
netif_dbg(priv, wol, priv->netdev, "resumed from WOL\n");
}
+static void bcm_sysport_dim_work(struct work_struct *work)
+{
+ struct net_dim *dim = container_of(work, struct net_dim, work);
+ struct bcm_sysport_net_dim *ndim =
+ container_of(dim, struct bcm_sysport_net_dim, dim);
+ struct bcm_sysport_priv *priv =
+ container_of(ndim, struct bcm_sysport_priv, dim);
+ struct net_dim_cq_moder cur_profile =
+ net_dim_get_profile(dim->mode, dim->profile_ix);
+
+ bcm_sysport_set_rx_coalesce(priv, cur_profile.usec, cur_profile.pkts);
+ dim->state = NET_DIM_START_MEASURE;
+}
+
/* RX and misc interrupt routine */
static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id)
{
@@ -1030,6 +1088,7 @@ static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id)
}
if (priv->irq0_stat & INTRL2_0_RDMA_MBDONE) {
+ priv->dim.event_ctr++;
if (likely(napi_schedule_prep(&priv->napi))) {
/* disable RX interrupts */
intrl2_0_mask_set(priv, INTRL2_0_RDMA_MBDONE);
@@ -1354,6 +1413,37 @@ out:
phy_print_status(phydev);
}
+static void bcm_sysport_init_dim(struct bcm_sysport_priv *priv,
+ void (*cb)(struct work_struct *work))
+{
+ struct bcm_sysport_net_dim *dim = &priv->dim;
+
+ INIT_WORK(&dim->dim.work, cb);
+ dim->dim.mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+ dim->event_ctr = 0;
+ dim->packets = 0;
+ dim->bytes = 0;
+}
+
+static void bcm_sysport_init_rx_coalesce(struct bcm_sysport_priv *priv)
+{
+ struct bcm_sysport_net_dim *dim = &priv->dim;
+ struct net_dim_cq_moder moder;
+ u32 usecs, pkts;
+
+ usecs = priv->rx_coalesce_usecs;
+ pkts = priv->rx_max_coalesced_frames;
+
+ /* If DIM was enabled, re-apply default parameters */
+ if (dim->use_dim) {
+ moder = net_dim_get_def_profile(dim->dim.mode);
+ usecs = moder.usec;
+ pkts = moder.pkts;
+ }
+
+ bcm_sysport_set_rx_coalesce(priv, usecs, pkts);
+}
+
static int bcm_sysport_init_tx_ring(struct bcm_sysport_priv *priv,
unsigned int index)
{
@@ -1594,8 +1684,6 @@ static int bcm_sysport_init_rx_ring(struct bcm_sysport_priv *priv)
rdma_writel(priv, 0, RDMA_END_ADDR_HI);
rdma_writel(priv, priv->num_rx_desc_words - 1, RDMA_END_ADDR_LO);
- rdma_writel(priv, 1, RDMA_MBDONE_INTR);
-
netif_dbg(priv, hw, priv->netdev,
"RDMA cfg, num_rx_bds=%d, rx_bds=%p\n",
priv->num_rx_bds, priv->rx_bds);
@@ -1763,6 +1851,8 @@ static void bcm_sysport_netif_start(struct net_device *dev)
struct bcm_sysport_priv *priv = netdev_priv(dev);
/* Enable NAPI */
+ bcm_sysport_init_dim(priv, bcm_sysport_dim_work);
+ bcm_sysport_init_rx_coalesce(priv);
napi_enable(&priv->napi);
/* Enable RX interrupt and TX ring full interrupt */
@@ -1948,6 +2038,7 @@ static void bcm_sysport_netif_stop(struct net_device *dev)
/* stop all software from updating hardware */
netif_tx_stop_all_queues(dev);
napi_disable(&priv->napi);
+ cancel_work_sync(&priv->dim.dim.work);
phy_stop(dev->phydev);
/* mask all interrupts */
@@ -2267,6 +2358,7 @@ static int bcm_sysport_probe(struct platform_device *pdev)
/* libphy will adjust the link state accordingly */
netif_carrier_off(dev);
+ priv->rx_max_coalesced_frames = 1;
u64_stats_init(&priv->syncp);
priv->dsa_notifier.notifier_call = bcm_sysport_dsa_notifier;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 22:47:02 +0000