forcedeth: save irq events for napi processing
This patch will save the irq events in the driver's context so that the napi routine knows which interrupts have occurred. Subsequent changes will be moving all interrupt processing into the napi poll routine. Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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d41c628c51
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582806be06
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@ -759,6 +759,7 @@ struct fe_priv {
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dma_addr_t ring_addr;
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struct pci_dev *pci_dev;
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u32 orig_mac[2];
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u32 events;
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u32 irqmask;
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u32 desc_ver;
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u32 txrxctl_bits;
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@ -3417,21 +3418,20 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
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struct net_device *dev = (struct net_device *) data;
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struct fe_priv *np = netdev_priv(dev);
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u8 __iomem *base = get_hwbase(dev);
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u32 events;
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int i;
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dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
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for (i=0; ; i++) {
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if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
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events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
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np->events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
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writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
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} else {
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events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
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np->events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
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writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
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}
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dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
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if (!(events & np->irqmask))
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dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
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if (!(np->events & np->irqmask))
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break;
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nv_msi_workaround(np);
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@ -3441,7 +3441,7 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
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spin_unlock(&np->lock);
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#ifdef CONFIG_FORCEDETH_NAPI
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if (events & NVREG_IRQ_RX_ALL) {
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if (np->events & NVREG_IRQ_RX_ALL) {
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spin_lock(&np->lock);
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napi_schedule(&np->napi);
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@ -3464,7 +3464,7 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
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}
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}
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#endif
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if (unlikely(events & NVREG_IRQ_LINK)) {
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if (unlikely(np->events & NVREG_IRQ_LINK)) {
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spin_lock(&np->lock);
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nv_link_irq(dev);
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spin_unlock(&np->lock);
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@ -3475,15 +3475,15 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
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spin_unlock(&np->lock);
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np->link_timeout = jiffies + LINK_TIMEOUT;
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}
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if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
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if (unlikely(np->events & (NVREG_IRQ_TX_ERR))) {
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dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
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dev->name, events);
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dev->name, np->events);
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}
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if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
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if (unlikely(np->events & (NVREG_IRQ_UNKNOWN))) {
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printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
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dev->name, events);
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dev->name, np->events);
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}
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if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
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if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
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spin_lock(&np->lock);
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/* disable interrupts on the nic */
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if (!(np->msi_flags & NV_MSI_X_ENABLED))
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@ -3534,21 +3534,20 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
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struct net_device *dev = (struct net_device *) data;
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struct fe_priv *np = netdev_priv(dev);
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u8 __iomem *base = get_hwbase(dev);
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u32 events;
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int i;
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dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name);
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for (i=0; ; i++) {
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if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
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events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
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np->events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
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writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
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} else {
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events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
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np->events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
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writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
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}
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dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
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if (!(events & np->irqmask))
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dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
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if (!(np->events & np->irqmask))
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break;
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nv_msi_workaround(np);
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@ -3558,7 +3557,7 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
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spin_unlock(&np->lock);
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#ifdef CONFIG_FORCEDETH_NAPI
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if (events & NVREG_IRQ_RX_ALL) {
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if (np->events & NVREG_IRQ_RX_ALL) {
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spin_lock(&np->lock);
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napi_schedule(&np->napi);
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@ -3581,7 +3580,7 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
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}
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}
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#endif
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if (unlikely(events & NVREG_IRQ_LINK)) {
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if (unlikely(np->events & NVREG_IRQ_LINK)) {
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spin_lock(&np->lock);
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nv_link_irq(dev);
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spin_unlock(&np->lock);
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@ -3592,15 +3591,15 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
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spin_unlock(&np->lock);
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np->link_timeout = jiffies + LINK_TIMEOUT;
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}
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if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
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if (unlikely(np->events & (NVREG_IRQ_TX_ERR))) {
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dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
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dev->name, events);
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dev->name, np->events);
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}
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if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
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if (unlikely(np->events & (NVREG_IRQ_UNKNOWN))) {
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printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
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dev->name, events);
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dev->name, np->events);
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}
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if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
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if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
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spin_lock(&np->lock);
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/* disable interrupts on the nic */
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if (!(np->msi_flags & NV_MSI_X_ENABLED))
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