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Message-ID: <20150801061313.GA12571@mx.elandsys.com>
Date: Fri, 31 Jul 2015 23:13:13 -0700
From: Loganaden Velvindron <logan@...ndsys.com>
To: netdev@...r.kernel.org
Subject: [PATCH] Add BQL support for 3c59x, based on patch from Tino
Reichardt.
Tested on 3Com PCI 3c905C Tornardo by running Flent multiple times.
Signed-off-by: Loganaden Velvindron <logan@...ndsys.com>
---
drivers/net/ethernet/3com/3c59x.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c
index 2d1ce3c..5b1b818 100644
--- a/drivers/net/ethernet/3com/3c59x.c
+++ b/drivers/net/ethernet/3com/3c59x.c
@@ -1726,6 +1726,7 @@ vortex_up(struct net_device *dev)
if (vp->cb_fn_base) /* The PCMCIA people are idiots. */
iowrite32(0x8000, vp->cb_fn_base + 4);
netif_start_queue (dev);
+ netdev_reset_queue(dev);
err_out:
return err;
}
@@ -2064,6 +2065,7 @@ vortex_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct vortex_private *vp = netdev_priv(dev);
void __iomem *ioaddr = vp->ioaddr;
+ int skblen = skb->len;
/* Put out the doubleword header... */
iowrite32(skb->len, ioaddr + TX_FIFO);
@@ -2095,6 +2097,7 @@ vortex_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
}
+ netdev_sent_queue(dev, skblen);
/* Clear the Tx status stack. */
{
@@ -2126,6 +2129,7 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
void __iomem *ioaddr = vp->ioaddr;
/* Calculate the next Tx descriptor entry. */
int entry = vp->cur_tx % TX_RING_SIZE;
+ int skblen = skb->len;
struct boom_tx_desc *prev_entry = &vp->tx_ring[(vp->cur_tx-1) % TX_RING_SIZE];
unsigned long flags;
dma_addr_t dma_addr;
@@ -2231,6 +2235,8 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
vp->cur_tx++;
+ netdev_sent_queue(dev, skblen);
+
if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1) {
netif_stop_queue (dev);
} else { /* Clear previous interrupt enable. */
@@ -2268,6 +2274,7 @@ vortex_interrupt(int irq, void *dev_id)
int status;
int work_done = max_interrupt_work;
int handled = 0;
+ unsigned int bytes_compl = 0, pkts_compl = 0;
ioaddr = vp->ioaddr;
spin_lock(&vp->lock);
@@ -2315,6 +2322,8 @@ vortex_interrupt(int irq, void *dev_id)
if (ioread16(ioaddr + Wn7_MasterStatus) & 0x1000) {
iowrite16(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */
pci_unmap_single(VORTEX_PCI(vp), vp->tx_skb_dma, (vp->tx_skb->len + 3) & ~3, PCI_DMA_TODEVICE);
+ pkts_compl++;
+ bytes_compl += vp->tx_skb->len;
dev_kfree_skb_irq(vp->tx_skb); /* Release the transferred buffer */
if (ioread16(ioaddr + TxFree) > 1536) {
/*
@@ -2359,6 +2368,7 @@ vortex_interrupt(int irq, void *dev_id)
iowrite16(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
} while ((status = ioread16(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete));
+ netdev_completed_queue(dev, pkts_compl, bytes_compl);
spin_unlock(&vp->window_lock);
if (vortex_debug > 4)
@@ -2383,6 +2393,7 @@ boomerang_interrupt(int irq, void *dev_id)
int status;
int work_done = max_interrupt_work;
int handled = 0;
+ unsigned int bytes_compl = 0, pkts_compl = 0;
ioaddr = vp->ioaddr;
@@ -2456,6 +2467,8 @@ boomerang_interrupt(int irq, void *dev_id)
pci_unmap_single(VORTEX_PCI(vp),
le32_to_cpu(vp->tx_ring[entry].addr), skb->len, PCI_DMA_TODEVICE);
#endif
+ pkts_compl++;
+ bytes_compl += skb->len;
dev_kfree_skb_irq(skb);
vp->tx_skbuff[entry] = NULL;
} else {
@@ -2496,6 +2509,7 @@ boomerang_interrupt(int irq, void *dev_id)
iowrite32(0x8000, vp->cb_fn_base + 4);
} while ((status = ioread16(ioaddr + EL3_STATUS)) & IntLatch);
+ netdev_completed_queue(dev, pkts_compl, bytes_compl);
if (vortex_debug > 4)
pr_debug("%s: exiting interrupt, status %4.4x.\n",
@@ -2697,7 +2711,8 @@ vortex_down(struct net_device *dev, int final_down)
struct vortex_private *vp = netdev_priv(dev);
void __iomem *ioaddr = vp->ioaddr;
- netif_stop_queue (dev);
+ netdev_reset_queue(dev);
+ netif_stop_queue(dev);
del_timer_sync(&vp->rx_oom_timer);
del_timer_sync(&vp->timer);
--
2.4.5
--
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