Introduce a method for notify resume to be
called from sysfs. In this patch one can
now call notify resume from sysfs when
is supported by platform.
Signed-off-by: Bryant G. Ly <bryan...@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalv...@linux.vnet.ibm.com>
---
arch/powerpc/kernel/eeh_sysfs.c | 45 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/arch/powerpc/kernel/eeh_sysfs.c b/arch/powerpc/kernel/eeh_sysfs.c
index 797549289798..9c513abc102c 100644
--- a/arch/powerpc/kernel/eeh_sysfs.c
+++ b/arch/powerpc/kernel/eeh_sysfs.c
@@ -90,6 +90,38 @@ static ssize_t eeh_pe_state_store(struct device *dev,
static DEVICE_ATTR_RW(eeh_pe_state);
+#ifdef CONFIG_PCI_IOV
+static ssize_t eeh_notify_resume_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev);
+ struct pci_dn *pdn = pci_get_pdn(pdev);
+
+ if (!edev || !edev->pe)
+ return -ENODEV;
+
+ pdn = pci_get_pdn(pdev);
+ return sprintf(buf, "%d\n", pdn->last_allow_rc);
+}
+
+static ssize_t eeh_notify_resume_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev);
+
+ if (!edev || !edev->pe)
+ return -ENODEV;
+
+ if (eeh_ops->notify_resume(pci_get_pdn(pdev)))
+ return -EIO;
+ return count;
+}
+static DEVICE_ATTR_RW(eeh_notify_resume);
+#endif
+
void eeh_sysfs_add_device(struct pci_dev *pdev)
{
struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev);
@@ -105,6 +137,13 @@ void eeh_sysfs_add_device(struct pci_dev *pdev)
rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_config_addr);
rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_state);
+#ifdef CONFIG_PCI_IOV
+ if (of_get_property(pci_device_to_OF_node
+ ((pdev->is_physfn ? pdev : pdev->physfn)),
+ "ibm,is-open-sriov-pf", NULL))
+ rc += device_create_file(&pdev->dev,
+ &dev_attr_eeh_notify_resume);
+#endif
if (rc)
pr_warn("EEH: Unable to create sysfs entries\n");
else if (edev)
@@ -128,6 +167,12 @@ void eeh_sysfs_remove_device(struct pci_dev *pdev)
device_remove_file(&pdev->dev, &dev_attr_eeh_mode);
device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr);
device_remove_file(&pdev->dev, &dev_attr_eeh_pe_state);
+#ifdef CONFIG_PCI_IOV
+ if (of_get_property(pci_device_to_OF_node
+ ((pdev->is_physfn ? pdev : pdev->physfn)),
+ "ibm,is-open-sriov-pf", NULL))
+ device_remove_file(&pdev->dev, &dev_attr_eeh_notify_resume);
+#endif
if (edev)
edev->mode &= ~EEH_DEV_SYSFS;
--
2.14.3 (Apple Git-98)
