From f27e6f39fc37f378f5485b9a0ff905796e789f80 Mon Sep 17 00:00:00 2001 From: Ayaz Abdulla Date: Thu, 5 Mar 2009 08:02:14 +0000 Subject: [PATCH] forcedeth: napi - handle all processing The napi poll routine has been modified to handle all interrupt events and process them accordingly. Therefore, the ISR will now only schedule the napi poll and disable all interrupts instead of just disabling rx interrupt. Signed-off-by: Ayaz Abdulla Signed-off-by: David S. Miller --- drivers/net/forcedeth.c | 98 +++++++++++++++++++++++++---------------- 1 file changed, 60 insertions(+), 38 deletions(-) diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index 78c2fe185281..6b6765431eaf 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -3440,25 +3440,22 @@ static irqreturn_t nv_nic_irq(int foo, void *data) nv_msi_workaround(np); +#ifdef CONFIG_FORCEDETH_NAPI spin_lock(&np->lock); - nv_tx_done(dev, np->tx_ring_size); - spin_unlock(&np->lock); + napi_schedule(&np->napi); -#ifdef CONFIG_FORCEDETH_NAPI - if (np->events & NVREG_IRQ_RX_ALL) { - spin_lock(&np->lock); - napi_schedule(&np->napi); + /* Disable furthur irq's + (msix not enabled with napi) */ + writel(0, base + NvRegIrqMask); - /* Disable furthur receive irq's */ - np->irqmask &= ~NVREG_IRQ_RX_ALL; + spin_unlock(&np->lock); - if (np->msi_flags & NV_MSI_X_ENABLED) - writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask); - else - writel(np->irqmask, base + NvRegIrqMask); - spin_unlock(&np->lock); - } + return IRQ_HANDLED; #else + spin_lock(&np->lock); + nv_tx_done(dev, np->tx_ring_size); + spin_unlock(&np->lock); + if (nv_rx_process(dev, RX_WORK_PER_LOOP)) { if (unlikely(nv_alloc_rx(dev))) { spin_lock(&np->lock); @@ -3467,7 +3464,7 @@ static irqreturn_t nv_nic_irq(int foo, void *data) spin_unlock(&np->lock); } } -#endif + if (unlikely(np->events & NVREG_IRQ_LINK)) { spin_lock(&np->lock); nv_link_irq(dev); @@ -3513,7 +3510,7 @@ static irqreturn_t nv_nic_irq(int foo, void *data) printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i); break; } - +#endif } dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name); @@ -3548,25 +3545,22 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data) nv_msi_workaround(np); +#ifdef CONFIG_FORCEDETH_NAPI spin_lock(&np->lock); - nv_tx_done_optimized(dev, TX_WORK_PER_LOOP); - spin_unlock(&np->lock); + napi_schedule(&np->napi); -#ifdef CONFIG_FORCEDETH_NAPI - if (np->events & NVREG_IRQ_RX_ALL) { - spin_lock(&np->lock); - napi_schedule(&np->napi); + /* Disable furthur irq's + (msix not enabled with napi) */ + writel(0, base + NvRegIrqMask); - /* Disable furthur receive irq's */ - np->irqmask &= ~NVREG_IRQ_RX_ALL; + spin_unlock(&np->lock); - if (np->msi_flags & NV_MSI_X_ENABLED) - writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask); - else - writel(np->irqmask, base + NvRegIrqMask); - spin_unlock(&np->lock); - } + return IRQ_HANDLED; #else + spin_lock(&np->lock); + nv_tx_done_optimized(dev, TX_WORK_PER_LOOP); + spin_unlock(&np->lock); + if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) { if (unlikely(nv_alloc_rx_optimized(dev))) { spin_lock(&np->lock); @@ -3575,7 +3569,7 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data) spin_unlock(&np->lock); } } -#endif + if (unlikely(np->events & NVREG_IRQ_LINK)) { spin_lock(&np->lock); nv_link_irq(dev); @@ -3622,7 +3616,7 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data) printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i); break; } - +#endif } dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized completed\n", dev->name); @@ -3682,9 +3676,17 @@ static int nv_napi_poll(struct napi_struct *napi, int budget) int pkts, retcode; if (!nv_optimized(np)) { + spin_lock_irqsave(&np->lock, flags); + nv_tx_done(dev, np->tx_ring_size); + spin_unlock_irqrestore(&np->lock, flags); + pkts = nv_rx_process(dev, budget); retcode = nv_alloc_rx(dev); } else { + spin_lock_irqsave(&np->lock, flags); + nv_tx_done_optimized(dev, np->tx_ring_size); + spin_unlock_irqrestore(&np->lock, flags); + pkts = nv_rx_process_optimized(dev, budget); retcode = nv_alloc_rx_optimized(dev); } @@ -3696,17 +3698,37 @@ static int nv_napi_poll(struct napi_struct *napi, int budget) spin_unlock_irqrestore(&np->lock, flags); } + if (unlikely(np->events & NVREG_IRQ_LINK)) { + spin_lock_irqsave(&np->lock, flags); + nv_link_irq(dev); + spin_unlock_irqrestore(&np->lock, flags); + } + if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) { + spin_lock_irqsave(&np->lock, flags); + nv_linkchange(dev); + spin_unlock_irqrestore(&np->lock, flags); + np->link_timeout = jiffies + LINK_TIMEOUT; + } + if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) { + spin_lock_irqsave(&np->lock, flags); + if (!np->in_shutdown) { + np->nic_poll_irq = np->irqmask; + np->recover_error = 1; + mod_timer(&np->nic_poll, jiffies + POLL_WAIT); + } + spin_unlock_irqrestore(&np->lock, flags); + __napi_complete(napi); + return pkts; + } + if (pkts < budget) { - /* re-enable receive interrupts */ + /* re-enable interrupts + (msix not enabled in napi) */ spin_lock_irqsave(&np->lock, flags); __napi_complete(napi); - np->irqmask |= NVREG_IRQ_RX_ALL; - if (np->msi_flags & NV_MSI_X_ENABLED) - writel(NVREG_IRQ_RX_ALL, base + NvRegIrqMask); - else - writel(np->irqmask, base + NvRegIrqMask); + writel(np->irqmask, base + NvRegIrqMask); spin_unlock_irqrestore(&np->lock, flags); } -- 2.30.2