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xen/pciback: Print out the MSI/MSI-X (PIRQ) values
If the verbose_request is set (and loglevel high enough), print out the MSI/MSI-X values that are sent to the guest. This should aid in debugging issues. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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parent
e17ab35f05
commit
c288b67b9b
1 changed files with 31 additions and 0 deletions
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@ -16,6 +16,9 @@ int pciback_enable_msi(struct pciback_device *pdev,
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int otherend = pdev->xdev->otherend_id;
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int status;
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: enable MSI\n", pci_name(dev));
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status = pci_enable_msi(dev);
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if (status) {
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@ -29,9 +32,14 @@ int pciback_enable_msi(struct pciback_device *pdev,
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* the local domain's IRQ number. */
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op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: MSI: %d\n", pci_name(dev),
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op->value);
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dev_data = pci_get_drvdata(dev);
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if (dev_data)
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dev_data->ack_intr = 0;
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return 0;
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}
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@ -39,9 +47,16 @@ int pciback_disable_msi(struct pciback_device *pdev,
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struct pci_dev *dev, struct xen_pci_op *op)
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{
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struct pciback_dev_data *dev_data;
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: disable MSI\n", pci_name(dev));
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pci_disable_msi(dev);
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op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: MSI: %d\n", pci_name(dev),
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op->value);
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dev_data = pci_get_drvdata(dev);
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if (dev_data)
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dev_data->ack_intr = 1;
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@ -55,6 +70,10 @@ int pciback_enable_msix(struct pciback_device *pdev,
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int i, result;
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struct msix_entry *entries;
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: enable MSI-X\n",
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pci_name(dev));
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if (op->value > SH_INFO_MAX_VEC)
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return -EINVAL;
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@ -75,6 +94,11 @@ int pciback_enable_msix(struct pciback_device *pdev,
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if (entries[i].vector)
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op->msix_entries[i].vector =
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xen_pirq_from_irq(entries[i].vector);
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: " \
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"MSI-X[%d]: %d\n",
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pci_name(dev), i,
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op->msix_entries[i].vector);
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}
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} else {
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printk(KERN_WARNING "pciback: %s: failed to enable MSI-X: err %d!\n",
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@ -95,6 +119,10 @@ int pciback_disable_msix(struct pciback_device *pdev,
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{
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struct pciback_dev_data *dev_data;
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: disable MSI-X\n",
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pci_name(dev));
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pci_disable_msix(dev);
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/*
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@ -102,6 +130,9 @@ int pciback_disable_msix(struct pciback_device *pdev,
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* an undefined IRQ value of zero.
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*/
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op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
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if (unlikely(verbose_request))
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printk(KERN_DEBUG "pciback: %s: MSI-X: %d\n", pci_name(dev),
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op->value);
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dev_data = pci_get_drvdata(dev);
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if (dev_data)
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dev_data->ack_intr = 1;
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