summaryrefslogtreecommitdiffstats
path: root/drivers/xen
diff options
context:
space:
mode:
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-02-17 11:18:00 -0500
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-07-19 20:58:34 -0400
commitc288b67b9b4d65790e1a1a1fd982330730b68f46 (patch)
tree7ccfbb3337d45fbe48bb74174eec3a8fc12a5482 /drivers/xen
parente17ab35f05cb8b3d19c70454a41ea67207caf484 (diff)
downloadlinux-c288b67b9b4d65790e1a1a1fd982330730b68f46.tar.bz2
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>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/xen-pciback/conf_space_capability_msi.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/xen/xen-pciback/conf_space_capability_msi.c b/drivers/xen/xen-pciback/conf_space_capability_msi.c
index d0d2255b5da9..6e876b600e66 100644
--- a/drivers/xen/xen-pciback/conf_space_capability_msi.c
+++ b/drivers/xen/xen-pciback/conf_space_capability_msi.c
@@ -16,6 +16,9 @@ int pciback_enable_msi(struct pciback_device *pdev,
int otherend = pdev->xdev->otherend_id;
int status;
+ if (unlikely(verbose_request))
+ printk(KERN_DEBUG "pciback: %s: enable MSI\n", pci_name(dev));
+
status = pci_enable_msi(dev);
if (status) {
@@ -29,9 +32,14 @@ int pciback_enable_msi(struct pciback_device *pdev,
* the local domain's IRQ number. */
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);
if (dev_data)
dev_data->ack_intr = 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 pciback_dev_data *dev_data;
+
+ if (unlikely(verbose_request))
+ printk(KERN_DEBUG "pciback: %s: disable MSI\n", pci_name(dev));
+
pci_disable_msi(dev);
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);
if (dev_data)
dev_data->ack_intr = 1;
@@ -55,6 +70,10 @@ int pciback_enable_msix(struct pciback_device *pdev,
int i, result;
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)
return -EINVAL;
@@ -75,6 +94,11 @@ int pciback_enable_msix(struct pciback_device *pdev,
if (entries[i].vector)
op->msix_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 {
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;
+ if (unlikely(verbose_request))
+ printk(KERN_DEBUG "pciback: %s: disable MSI-X\n",
+ pci_name(dev));
+
pci_disable_msix(dev);
/*
@@ -102,6 +130,9 @@ int pciback_disable_msix(struct pciback_device *pdev,
* an undefined IRQ value of zero.
*/
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);
if (dev_data)
dev_data->ack_intr = 1;