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xen/pciback: Print out the MSI/MSI-X (PIRQ) values

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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>
This commit is contained in:
Konrad Rzeszutek Wilk 2011-02-17 11:18:00 -05:00
parent e17ab35f05
commit c288b67b9b
1 changed files with 31 additions and 0 deletions
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31
drivers/xen/xen-pciback/conf_space_capability_msi.c
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@ -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;