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path: root/drivers/net/forcedeth.c
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-rw-r--r--drivers/net/forcedeth.c252
1 files changed, 105 insertions, 147 deletions
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 07e245dab680..2c3a7f851f20 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -3423,99 +3423,78 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
- int i;
dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
- for (i=0; ; i++) {
- if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
- np->events = readl(base + NvRegIrqStatus);
- writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
- } else {
- np->events = readl(base + NvRegMSIXIrqStatus);
- writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
- }
- dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
- if (!(np->events & np->irqmask))
- break;
+ if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
+ np->events = readl(base + NvRegIrqStatus);
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ } else {
+ np->events = readl(base + NvRegMSIXIrqStatus);
+ writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
+ }
+ dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
+ if (!(np->events & np->irqmask))
+ return IRQ_NONE;
- nv_msi_workaround(np);
+ nv_msi_workaround(np);
#ifdef CONFIG_FORCEDETH_NAPI
- spin_lock(&np->lock);
- napi_schedule(&np->napi);
+ spin_lock(&np->lock);
+ napi_schedule(&np->napi);
- /* Disable furthur irq's
- (msix not enabled with napi) */
- writel(0, base + NvRegIrqMask);
+ /* Disable furthur irq's
+ (msix not enabled with napi) */
+ writel(0, base + NvRegIrqMask);
- spin_unlock(&np->lock);
+ spin_unlock(&np->lock);
- return IRQ_HANDLED;
+ 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);
- if (!np->in_shutdown)
- mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
- spin_unlock(&np->lock);
- }
- }
+ spin_lock(&np->lock);
+ nv_tx_done(dev, np->tx_ring_size);
+ spin_unlock(&np->lock);
- if (unlikely(np->events & NVREG_IRQ_LINK)) {
+ if (nv_rx_process(dev, RX_WORK_PER_LOOP)) {
+ if (unlikely(nv_alloc_rx(dev))) {
spin_lock(&np->lock);
- nv_link_irq(dev);
- spin_unlock(&np->lock);
- }
- if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
- spin_lock(&np->lock);
- nv_linkchange(dev);
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
spin_unlock(&np->lock);
- np->link_timeout = jiffies + LINK_TIMEOUT;
}
- if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
- spin_lock(&np->lock);
- /* disable interrupts on the nic */
- if (!(np->msi_flags & NV_MSI_X_ENABLED))
- writel(0, base + NvRegIrqMask);
- else
- writel(np->irqmask, base + NvRegIrqMask);
- pci_push(base);
+ }
- if (!np->in_shutdown) {
- np->nic_poll_irq = np->irqmask;
- np->recover_error = 1;
- mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
- }
- spin_unlock(&np->lock);
- break;
- }
- if (unlikely(i > max_interrupt_work)) {
- spin_lock(&np->lock);
- /* disable interrupts on the nic */
- if (!(np->msi_flags & NV_MSI_X_ENABLED))
- writel(0, base + NvRegIrqMask);
- else
- writel(np->irqmask, base + NvRegIrqMask);
- pci_push(base);
+ if (unlikely(np->events & NVREG_IRQ_LINK)) {
+ spin_lock(&np->lock);
+ nv_link_irq(dev);
+ spin_unlock(&np->lock);
+ }
+ if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
+ spin_lock(&np->lock);
+ nv_linkchange(dev);
+ spin_unlock(&np->lock);
+ np->link_timeout = jiffies + LINK_TIMEOUT;
+ }
+ if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
+ spin_lock(&np->lock);
+ /* disable interrupts on the nic */
+ if (!(np->msi_flags & NV_MSI_X_ENABLED))
+ writel(0, base + NvRegIrqMask);
+ else
+ writel(np->irqmask, base + NvRegIrqMask);
+ pci_push(base);
- if (!np->in_shutdown) {
- np->nic_poll_irq = np->irqmask;
- mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
- }
- spin_unlock(&np->lock);
- printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
- break;
+ if (!np->in_shutdown) {
+ np->nic_poll_irq = np->irqmask;
+ np->recover_error = 1;
+ mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
-#endif
+ spin_unlock(&np->lock);
}
+#endif
dprintk(KERN_DEBUG "%s: nv_nic_irq completed\n", dev->name);
- return IRQ_RETVAL(i);
+ return IRQ_HANDLED;
}
/**
@@ -3528,100 +3507,79 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
- int i;
dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name);
- for (i=0; ; i++) {
- if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
- np->events = readl(base + NvRegIrqStatus);
- writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
- } else {
- np->events = readl(base + NvRegMSIXIrqStatus);
- writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
- }
- dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
- if (!(np->events & np->irqmask))
- break;
+ if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
+ np->events = readl(base + NvRegIrqStatus);
+ writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
+ } else {
+ np->events = readl(base + NvRegMSIXIrqStatus);
+ writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
+ }
+ dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
+ if (!(np->events & np->irqmask))
+ return IRQ_NONE;
- nv_msi_workaround(np);
+ nv_msi_workaround(np);
#ifdef CONFIG_FORCEDETH_NAPI
- spin_lock(&np->lock);
- napi_schedule(&np->napi);
+ spin_lock(&np->lock);
+ napi_schedule(&np->napi);
- /* Disable furthur irq's
- (msix not enabled with napi) */
- writel(0, base + NvRegIrqMask);
+ /* Disable furthur irq's
+ (msix not enabled with napi) */
+ writel(0, base + NvRegIrqMask);
- spin_unlock(&np->lock);
+ spin_unlock(&np->lock);
- return IRQ_HANDLED;
+ 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);
- if (!np->in_shutdown)
- mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
- spin_unlock(&np->lock);
- }
- }
+ spin_lock(&np->lock);
+ nv_tx_done_optimized(dev, TX_WORK_PER_LOOP);
+ spin_unlock(&np->lock);
- if (unlikely(np->events & NVREG_IRQ_LINK)) {
+ if (nv_rx_process_optimized(dev, RX_WORK_PER_LOOP)) {
+ if (unlikely(nv_alloc_rx_optimized(dev))) {
spin_lock(&np->lock);
- nv_link_irq(dev);
- spin_unlock(&np->lock);
- }
- if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
- spin_lock(&np->lock);
- nv_linkchange(dev);
- spin_unlock(&np->lock);
- np->link_timeout = jiffies + LINK_TIMEOUT;
- }
- if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
- spin_lock(&np->lock);
- /* disable interrupts on the nic */
- if (!(np->msi_flags & NV_MSI_X_ENABLED))
- writel(0, base + NvRegIrqMask);
- else
- writel(np->irqmask, base + NvRegIrqMask);
- pci_push(base);
-
- if (!np->in_shutdown) {
- np->nic_poll_irq = np->irqmask;
- np->recover_error = 1;
- mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
- }
+ if (!np->in_shutdown)
+ mod_timer(&np->oom_kick, jiffies + OOM_REFILL);
spin_unlock(&np->lock);
- break;
}
+ }
- if (unlikely(i > max_interrupt_work)) {
- spin_lock(&np->lock);
- /* disable interrupts on the nic */
- if (!(np->msi_flags & NV_MSI_X_ENABLED))
- writel(0, base + NvRegIrqMask);
- else
- writel(np->irqmask, base + NvRegIrqMask);
- pci_push(base);
+ if (unlikely(np->events & NVREG_IRQ_LINK)) {
+ spin_lock(&np->lock);
+ nv_link_irq(dev);
+ spin_unlock(&np->lock);
+ }
+ if (unlikely(np->need_linktimer && time_after(jiffies, np->link_timeout))) {
+ spin_lock(&np->lock);
+ nv_linkchange(dev);
+ spin_unlock(&np->lock);
+ np->link_timeout = jiffies + LINK_TIMEOUT;
+ }
+ if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
+ spin_lock(&np->lock);
+ /* disable interrupts on the nic */
+ if (!(np->msi_flags & NV_MSI_X_ENABLED))
+ writel(0, base + NvRegIrqMask);
+ else
+ writel(np->irqmask, base + NvRegIrqMask);
+ pci_push(base);
- if (!np->in_shutdown) {
- np->nic_poll_irq = np->irqmask;
- mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
- }
- spin_unlock(&np->lock);
- printk(KERN_DEBUG "%s: too many iterations (%d) in nv_nic_irq.\n", dev->name, i);
- break;
+ if (!np->in_shutdown) {
+ np->nic_poll_irq = np->irqmask;
+ np->recover_error = 1;
+ mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
-#endif
+ spin_unlock(&np->lock);
}
+
+#endif
dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized completed\n", dev->name);
- return IRQ_RETVAL(i);
+ return IRQ_HANDLED;
}
static irqreturn_t nv_nic_irq_tx(int foo, void *data)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.