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Commit c288b67b authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk
Browse files

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: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent e17ab35f

drivers/xen/xen-pciback/conf_space_capability_msi.c

+31 −0
Original line number Original line Diff line number Diff line
@@ -16,6 +16,9 @@ int pciback_enable_msi(struct pciback_device *pdev, 
	int otherend = pdev->xdev->otherend_id;

	int otherend = pdev->xdev->otherend_id;

	int status;

	int status;





	if (unlikely(verbose_request))

		printk(KERN_DEBUG "pciback: %s: enable MSI\n", pci_name(dev));



	status = pci_enable_msi(dev);

	status = pci_enable_msi(dev);





	if (status) {

	if (status) {
@@ -29,9 +32,14 @@ int pciback_enable_msi(struct pciback_device *pdev, 
	 * the local domain's IRQ number. */

	 * the local domain's IRQ number. */





	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;

	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;

	if (unlikely(verbose_request))

		printk(KERN_DEBUG "pciback: %s: MSI: %d\n", pci_name(dev),

			op->value);



	dev_data = pci_get_drvdata(dev);

	dev_data = pci_get_drvdata(dev);

	if (dev_data)

	if (dev_data)

		dev_data->ack_intr = 0;

		dev_data->ack_intr = 0;



	return 0;

	return 0;

}

}
@@ -39,9 +47,16 @@ int pciback_disable_msi(struct pciback_device *pdev, 
		struct pci_dev *dev, struct xen_pci_op *op)

		struct pci_dev *dev, struct xen_pci_op *op)

{

{

	struct pciback_dev_data *dev_data;

	struct pciback_dev_data *dev_data;



	if (unlikely(verbose_request))

		printk(KERN_DEBUG "pciback: %s: disable MSI\n", pci_name(dev));



	pci_disable_msi(dev);

	pci_disable_msi(dev);





	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;

	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;

	if (unlikely(verbose_request))

		printk(KERN_DEBUG "pciback: %s: MSI: %d\n", pci_name(dev),

			op->value);

	dev_data = pci_get_drvdata(dev);

	dev_data = pci_get_drvdata(dev);

	if (dev_data)

	if (dev_data)

		dev_data->ack_intr = 1;

		dev_data->ack_intr = 1;
@@ -55,6 +70,10 @@ int pciback_enable_msix(struct pciback_device *pdev, 
	int i, result;

	int i, result;

	struct msix_entry *entries;

	struct msix_entry *entries;





	if (unlikely(verbose_request))

		printk(KERN_DEBUG "pciback: %s: enable MSI-X\n",

		       pci_name(dev));



	if (op->value > SH_INFO_MAX_VEC)

	if (op->value > SH_INFO_MAX_VEC)

		return -EINVAL;

		return -EINVAL;
@@ -75,6 +94,11 @@ int pciback_enable_msix(struct pciback_device *pdev, 
			if (entries[i].vector)

			if (entries[i].vector)

				op->msix_entries[i].vector =

				op->msix_entries[i].vector =

					xen_pirq_from_irq(entries[i].vector);

					xen_pirq_from_irq(entries[i].vector);

				if (unlikely(verbose_request))

					printk(KERN_DEBUG "pciback: %s: " \

						"MSI-X[%d]: %d\n",

						pci_name(dev), i,

						op->msix_entries[i].vector);

		}

		}

	} else {

	} else {

		printk(KERN_WARNING "pciback: %s: failed to enable MSI-X: err %d!\n",

		printk(KERN_WARNING "pciback: %s: failed to enable MSI-X: err %d!\n",
@@ -95,6 +119,10 @@ int pciback_disable_msix(struct pciback_device *pdev, 
{

{

	struct pciback_dev_data *dev_data;

	struct pciback_dev_data *dev_data;





	if (unlikely(verbose_request))

		printk(KERN_DEBUG "pciback: %s: disable MSI-X\n",

		       pci_name(dev));



	pci_disable_msix(dev);

	pci_disable_msix(dev);





	/*

	/*
@@ -102,6 +130,9 @@ int pciback_disable_msix(struct pciback_device *pdev, 
	 * an undefined IRQ value of zero.

	 * an undefined IRQ value of zero.

	 */

	 */

	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;

	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;

	if (unlikely(verbose_request))

		printk(KERN_DEBUG "pciback: %s: MSI-X: %d\n", pci_name(dev),

			op->value);

	dev_data = pci_get_drvdata(dev);

	dev_data = pci_get_drvdata(dev);

	if (dev_data)

	if (dev_data)

		dev_data->ack_intr = 1;

		dev_data->ack_intr = 1;