return;
rc = driver->err_handler->slot_reset(dev);
- if (*res == PCI_ERS_RESULT_NONE) *res = rc;
+ if ((*res == PCI_ERS_RESULT_NONE) ||
+ (*res == PCI_ERS_RESULT_RECOVERED)) *res = rc;
if (*res == PCI_ERS_RESULT_DISCONNECT &&
rc == PCI_ERS_RESULT_NEED_RESET) *res = rc;
}
static int eeh_reset_device (struct pci_dn *pe_dn, struct pci_bus *bus)
{
+ struct device_node *dn;
int cnt, rc;
/* pcibios will clear the counter; save the value */
if (rc)
return rc;
- /* New-style config addrs might be shared across multiple devices,
- * Walk over all functions on this device */
- if (pe_dn->eeh_pe_config_addr) {
- struct device_node *pe = pe_dn->node;
- pe = pe->parent->child;
- while (pe) {
- struct pci_dn *ppe = PCI_DN(pe);
- if (pe_dn->eeh_pe_config_addr == ppe->eeh_pe_config_addr) {
- rtas_configure_bridge(ppe);
- eeh_restore_bars(ppe);
- }
- pe = pe->sibling;
+ /* Walk over all functions on this device. */
+ dn = pe_dn->node;
+ if (!pcibios_find_pci_bus(dn) && PCI_DN(dn->parent))
+ dn = dn->parent->child;
+
+ while (dn) {
+ struct pci_dn *ppe = PCI_DN(dn);
+ /* On Power4, always true because eeh_pe_config_addr=0 */
+ if (pe_dn->eeh_pe_config_addr == ppe->eeh_pe_config_addr) {
+ rtas_configure_bridge(ppe);
+ eeh_restore_bars(ppe);
}
- } else {
- rtas_configure_bridge(pe_dn);
- eeh_restore_bars(pe_dn);
- }
+ dn = dn->sibling;
+ }
/* Give the system 5 seconds to finish running the user-space
* hotplug shutdown scripts, e.g. ifdown for ethernet. Yes,
/* The longest amount of time to wait for a pci device
* to come back on line, in seconds.
*/
-#define MAX_WAIT_FOR_RECOVERY 15
+#define MAX_WAIT_FOR_RECOVERY 150
struct pci_dn * handle_eeh_events (struct eeh_event *event)
{
if (!frozen_dn) {
- location = get_property(event->dn, "ibm,loc-code", NULL);
+ location = of_get_property(event->dn, "ibm,loc-code", NULL);
location = location ? location : "unknown";
printk(KERN_ERR "EEH: Error: Cannot find partition endpoint "
"for location=%s pci addr=%s\n",
location, pci_name(event->dev));
return NULL;
}
- location = get_property(frozen_dn, "ibm,loc-code", NULL);
+ location = of_get_property(frozen_dn, "ibm,loc-code", NULL);
location = location ? location : "unknown";
/* There are two different styles for coming up with the PE.
return NULL;
}
-#if 0
- /* We may get "permanent failure" messages on empty slots.
- * These are false alarms. Empty slots have no child dn. */
- if ((event->state == pci_channel_io_perm_failure) && (frozen_device == NULL))
- return;
-#endif
-
frozen_pdn = PCI_DN(frozen_dn);
frozen_pdn->eeh_freeze_count++;
if (frozen_pdn->eeh_freeze_count > EEH_MAX_ALLOWED_FREEZES)
goto excess_failures;
- /* If the reset state is a '5' and the time to reset is 0 (infinity)
- * or is more then 15 seconds, then mark this as a permanent failure.
- */
- if ((event->state == pci_channel_io_perm_failure) &&
- ((event->time_unavail <= 0) ||
- (event->time_unavail > MAX_WAIT_FOR_RECOVERY*1000)))
+ /* Get the current PCI slot state. */
+ rc = eeh_wait_for_slot_status (frozen_pdn, MAX_WAIT_FOR_RECOVERY*1000);
+ if (rc < 0) {
+ printk(KERN_WARNING "EEH: Permanent failure\n");
goto hard_fail;
+ }
- eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */);
printk(KERN_WARNING
- "EEH: This PCI device has failed %d times since last reboot: "
- "location=%s driver=%s pci addr=%s\n",
- frozen_pdn->eeh_freeze_count, location, drv_str, pci_str);
+ "EEH: This PCI device has failed %d times in the last hour:\n",
+ frozen_pdn->eeh_freeze_count);
+ printk(KERN_WARNING
+ "EEH: location=%s driver=%s pci addr=%s\n",
+ location, drv_str, pci_str);
/* Walk the various device drivers attached to this slot through
* a reset sequence, giving each an opportunity to do what it needs
*/
pci_walk_bus(frozen_bus, eeh_report_error, &result);
+ /* Since rtas may enable MMIO when posting the error log,
+ * don't post the error log until after all dev drivers
+ * have been informed. */
+ eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */);
+
/* If all device drivers were EEH-unaware, then shut
* down all of the device drivers, and hope they
* go down willingly, without panicing the system.
*/
if (result == PCI_ERS_RESULT_NONE) {
rc = eeh_reset_device(frozen_pdn, frozen_bus);
- if (rc)
+ if (rc) {
+ printk(KERN_WARNING "EEH: Unable to reset, rc=%d\n", rc);
goto hard_fail;
+ }
}
/* If all devices reported they can proceed, then re-enable MMIO */
if (result == PCI_ERS_RESULT_CAN_RECOVER) {
rc = rtas_pci_enable(frozen_pdn, EEH_THAW_MMIO);
+ if (rc < 0)
+ goto hard_fail;
if (rc) {
result = PCI_ERS_RESULT_NEED_RESET;
} else {
if (result == PCI_ERS_RESULT_CAN_RECOVER) {
rc = rtas_pci_enable(frozen_pdn, EEH_THAW_DMA);
+ if (rc < 0)
+ goto hard_fail;
if (rc)
result = PCI_ERS_RESULT_NEED_RESET;
else
}
/* If any device has a hard failure, then shut off everything. */
- if (result == PCI_ERS_RESULT_DISCONNECT)
+ if (result == PCI_ERS_RESULT_DISCONNECT) {
+ printk(KERN_WARNING "EEH: Device driver gave up\n");
goto hard_fail;
+ }
/* If any device called out for a reset, then reset the slot */
if (result == PCI_ERS_RESULT_NEED_RESET) {
rc = eeh_reset_device(frozen_pdn, NULL);
- if (rc)
+ if (rc) {
+ printk(KERN_WARNING "EEH: Cannot reset, rc=%d\n", rc);
goto hard_fail;
+ }
result = PCI_ERS_RESULT_NONE;
pci_walk_bus(frozen_bus, eeh_report_reset, &result);
}
/* All devices should claim they have recovered by now. */
- if (result != PCI_ERS_RESULT_RECOVERED)
+ if ((result != PCI_ERS_RESULT_RECOVERED) &&
+ (result != PCI_ERS_RESULT_NONE)) {
+ printk(KERN_WARNING "EEH: Not recovered\n");
goto hard_fail;
+ }
/* Tell all device drivers that they can resume operations */
pci_walk_bus(frozen_bus, eeh_report_resume, NULL);
*/
printk(KERN_ERR
"EEH: PCI device at location=%s driver=%s pci addr=%s \n"
- "has failed %d times and has been permanently disabled. \n"
+ "has failed %d times in the last hour "
+ "and has been permanently disabled. \n"
"Please try reseating this device or replacing it.\n",
location, drv_str, pci_str, frozen_pdn->eeh_freeze_count);
goto perm_error;
projects / linux-drm-fsl-dcu.git / blobdiff