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Add IRQ mapping

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This commit is contained in:
Alex Forencich 2020-08-17 23:53:31 -07:00
parent 171eb144cb
commit b6e5216ab4
3 changed files with 12 additions and 9 deletions
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3
modules/mqnic/mqnic.h
View File

@ -80,7 +80,8 @@ struct mqnic_dev {
char name[16];
int msi_nvecs;
int irq_count;
int irq_map[32];
unsigned int id;
struct list_head dev_list_node;

14
modules/mqnic/mqnic_main.c
View File

@ -89,7 +89,7 @@ static irqreturn_t mqnic_interrupt(int irq, void *data)
for (k = 0; k < MQNIC_MAX_IF; k++)
{
if (!mqnic->ndev[k])
if (unlikely(!mqnic->ndev[k]))
continue;
priv = netdev_priv(mqnic->ndev[k]);
@ -229,8 +229,8 @@ static int mqnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
// Allocate MSI IRQs
mqnic->msi_nvecs = pci_alloc_irq_vectors(pdev, 1, 32, PCI_IRQ_MSI);
if (mqnic->msi_nvecs < 0)
mqnic->irq_count = pci_alloc_irq_vectors(pdev, 1, 32, PCI_IRQ_MSI);
if (mqnic->irq_count < 0)
{
ret = -ENOMEM;
dev_err(dev, "Failed to allocate IRQs");
@ -238,7 +238,7 @@ static int mqnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
// Set up interrupts
for (k = 0; k < mqnic->msi_nvecs; k++)
for (k = 0; k < mqnic->irq_count; k++)
{
ret = pci_request_irq(pdev, k, mqnic_interrupt, 0, mqnic, "mqnic%d-%d", mqnic->id, k);
if (ret < 0)
@ -246,6 +246,8 @@ static int mqnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
dev_err(dev, "Failed to request IRQ");
goto fail_irq;
}
mqnic->irq_map[k] = pci_irq_vector(pdev, k);
}
// Set up I2C interfaces
@ -327,7 +329,7 @@ fail_init_netdev:
pci_clear_master(pdev);
fail_i2c:
mqnic_remove_i2c(mqnic);
for (k = 0; k < mqnic->msi_nvecs; k++)
for (k = 0; k < mqnic->irq_count; k++)
{
pci_free_irq(pdev, k, mqnic);
}
@ -371,7 +373,7 @@ static void mqnic_remove(struct pci_dev *pdev)
pci_clear_master(pdev);
mqnic_remove_i2c(mqnic);
for (k = 0; k < mqnic->msi_nvecs; k++)
for (k = 0; k < mqnic->irq_count; k++)
{
pci_free_irq(pdev, k, mqnic);
}

4
modules/mqnic/mqnic_netdev.c
View File

@ -44,8 +44,8 @@ static int mqnic_start_port(struct net_device *ndev)
// set up event queues
for (k = 0; k < priv->event_queue_count; k++)
{
priv->event_ring[k]->irq = pci_irq_vector(mdev->pdev, k % mdev->msi_nvecs);
mqnic_activate_eq_ring(priv, priv->event_ring[k], k % mdev->msi_nvecs);
priv->event_ring[k]->irq = mdev->irq_map[k % mdev->irq_count];
mqnic_activate_eq_ring(priv, priv->event_ring[k], k % mdev->irq_count);
mqnic_arm_eq(priv->event_ring[k]);
}