summaryrefslogtreecommitdiff
path: root/arch/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/configs/ppc6xx_defconfig1
-rw-r--r--arch/powerpc/kernel/eeh.c1
-rw-r--r--arch/powerpc/kernel/eeh_driver.c48
-rw-r--r--arch/powerpc/kernel/eeh_pe.c10
-rw-r--r--arch/powerpc/kernel/pci-hotplug.c3
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c52
6 files changed, 92 insertions, 23 deletions
diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig
index a91a766b71a4..efa1411a52e0 100644
--- a/arch/powerpc/configs/ppc6xx_defconfig
+++ b/arch/powerpc/configs/ppc6xx_defconfig
@@ -253,7 +253,6 @@ CONFIG_NET_SCH_DSMARK=m
CONFIG_NET_SCH_NETEM=m
CONFIG_NET_SCH_INGRESS=m
CONFIG_NET_CLS_BASIC=m
-CONFIG_NET_CLS_TCINDEX=m
CONFIG_NET_CLS_ROUTE4=m
CONFIG_NET_CLS_FW=m
CONFIG_NET_CLS_U32=m
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c
index ca7f7bb2b478..2b5f3323e107 100644
--- a/arch/powerpc/kernel/eeh.c
+++ b/arch/powerpc/kernel/eeh.c
@@ -1139,6 +1139,7 @@ int eeh_unfreeze_pe(struct eeh_pe *pe)
return ret;
}
+EXPORT_SYMBOL_GPL(eeh_unfreeze_pe);
static struct pci_device_id eeh_reset_ids[] = {
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index 7efe04c68f0f..dd50de91c438 100644
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -257,13 +257,12 @@ static void eeh_pe_report_edev(struct eeh_dev *edev, eeh_report_fn fn,
struct pci_driver *driver;
enum pci_ers_result new_result;
- pci_lock_rescan_remove();
pdev = edev->pdev;
if (pdev)
get_device(&pdev->dev);
- pci_unlock_rescan_remove();
if (!pdev) {
eeh_edev_info(edev, "no device");
+ *result = PCI_ERS_RESULT_DISCONNECT;
return;
}
device_lock(&pdev->dev);
@@ -304,8 +303,9 @@ static void eeh_pe_report(const char *name, struct eeh_pe *root,
struct eeh_dev *edev, *tmp;
pr_info("EEH: Beginning: '%s'\n", name);
- eeh_for_each_pe(root, pe) eeh_pe_for_each_dev(pe, edev, tmp)
- eeh_pe_report_edev(edev, fn, result);
+ eeh_for_each_pe(root, pe)
+ eeh_pe_for_each_dev(pe, edev, tmp)
+ eeh_pe_report_edev(edev, fn, result);
if (result)
pr_info("EEH: Finished:'%s' with aggregate recovery state:'%s'\n",
name, pci_ers_result_name(*result));
@@ -383,6 +383,8 @@ static void eeh_dev_restore_state(struct eeh_dev *edev, void *userdata)
if (!edev)
return;
+ pci_lock_rescan_remove();
+
/*
* The content in the config space isn't saved because
* the blocked config space on some adapters. We have
@@ -393,14 +395,19 @@ static void eeh_dev_restore_state(struct eeh_dev *edev, void *userdata)
if (list_is_last(&edev->entry, &edev->pe->edevs))
eeh_pe_restore_bars(edev->pe);
+ pci_unlock_rescan_remove();
return;
}
pdev = eeh_dev_to_pci_dev(edev);
- if (!pdev)
+ if (!pdev) {
+ pci_unlock_rescan_remove();
return;
+ }
pci_restore_state(pdev);
+
+ pci_unlock_rescan_remove();
}
/**
@@ -647,9 +654,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
if (any_passed || driver_eeh_aware || (pe->type & EEH_PE_VF)) {
eeh_pe_dev_traverse(pe, eeh_rmv_device, rmv_data);
} else {
- pci_lock_rescan_remove();
pci_hp_remove_devices(bus);
- pci_unlock_rescan_remove();
}
/*
@@ -665,8 +670,6 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
if (rc)
return rc;
- pci_lock_rescan_remove();
-
/* Restore PE */
eeh_ops->configure_bridge(pe);
eeh_pe_restore_bars(pe);
@@ -674,7 +677,6 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
/* Clear frozen state */
rc = eeh_clear_pe_frozen_state(pe, false);
if (rc) {
- pci_unlock_rescan_remove();
return rc;
}
@@ -709,7 +711,6 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
pe->tstamp = tstamp;
pe->freeze_count = cnt;
- pci_unlock_rescan_remove();
return 0;
}
@@ -843,10 +844,13 @@ void eeh_handle_normal_event(struct eeh_pe *pe)
{LIST_HEAD_INIT(rmv_data.removed_vf_list), 0};
int devices = 0;
+ pci_lock_rescan_remove();
+
bus = eeh_pe_bus_get(pe);
if (!bus) {
pr_err("%s: Cannot find PCI bus for PHB#%x-PE#%x\n",
__func__, pe->phb->global_number, pe->addr);
+ pci_unlock_rescan_remove();
return;
}
@@ -1094,10 +1098,15 @@ recover_failed:
eeh_pe_state_clear(pe, EEH_PE_PRI_BUS, true);
eeh_pe_dev_mode_mark(pe, EEH_DEV_REMOVED);
- pci_lock_rescan_remove();
- pci_hp_remove_devices(bus);
- pci_unlock_rescan_remove();
+ bus = eeh_pe_bus_get(pe);
+ if (bus)
+ pci_hp_remove_devices(bus);
+ else
+ pr_err("%s: PCI bus for PHB#%x-PE#%x disappeared\n",
+ __func__, pe->phb->global_number, pe->addr);
+
/* The passed PE should no longer be used */
+ pci_unlock_rescan_remove();
return;
}
@@ -1114,6 +1123,8 @@ out:
eeh_clear_slot_attention(edev->pdev);
eeh_pe_state_clear(pe, EEH_PE_RECOVERING, true);
+
+ pci_unlock_rescan_remove();
}
/**
@@ -1132,6 +1143,7 @@ void eeh_handle_special_event(void)
unsigned long flags;
int rc;
+ pci_lock_rescan_remove();
do {
rc = eeh_ops->next_error(&pe);
@@ -1171,10 +1183,12 @@ void eeh_handle_special_event(void)
break;
case EEH_NEXT_ERR_NONE:
+ pci_unlock_rescan_remove();
return;
default:
pr_warn("%s: Invalid value %d from next_error()\n",
__func__, rc);
+ pci_unlock_rescan_remove();
return;
}
@@ -1186,7 +1200,9 @@ void eeh_handle_special_event(void)
if (rc == EEH_NEXT_ERR_FROZEN_PE ||
rc == EEH_NEXT_ERR_FENCED_PHB) {
eeh_pe_state_mark(pe, EEH_PE_RECOVERING);
+ pci_unlock_rescan_remove();
eeh_handle_normal_event(pe);
+ pci_lock_rescan_remove();
} else {
eeh_for_each_pe(pe, tmp_pe)
eeh_pe_for_each_dev(tmp_pe, edev, tmp_edev)
@@ -1199,7 +1215,6 @@ void eeh_handle_special_event(void)
eeh_report_failure, NULL);
eeh_set_channel_state(pe, pci_channel_io_perm_failure);
- pci_lock_rescan_remove();
list_for_each_entry(hose, &hose_list, list_node) {
phb_pe = eeh_phb_pe_get(hose);
if (!phb_pe ||
@@ -1218,7 +1233,6 @@ void eeh_handle_special_event(void)
}
pci_hp_remove_devices(bus);
}
- pci_unlock_rescan_remove();
}
/*
@@ -1228,4 +1242,6 @@ void eeh_handle_special_event(void)
if (rc == EEH_NEXT_ERR_DEAD_IOC)
break;
} while (rc != EEH_NEXT_ERR_NONE);
+
+ pci_unlock_rescan_remove();
}
diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index d283d281d28e..e740101fadf3 100644
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -671,10 +671,12 @@ static void eeh_bridge_check_link(struct eeh_dev *edev)
eeh_ops->write_config(edev, cap + PCI_EXP_LNKCTL, 2, val);
/* Check link */
- if (!edev->pdev->link_active_reporting) {
- eeh_edev_dbg(edev, "No link reporting capability\n");
- msleep(1000);
- return;
+ if (edev->pdev) {
+ if (!edev->pdev->link_active_reporting) {
+ eeh_edev_dbg(edev, "No link reporting capability\n");
+ msleep(1000);
+ return;
+ }
}
/* Wait the link is up until timeout (5s) */
diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c
index 9ea74973d78d..6f444d0822d8 100644
--- a/arch/powerpc/kernel/pci-hotplug.c
+++ b/arch/powerpc/kernel/pci-hotplug.c
@@ -141,6 +141,9 @@ void pci_hp_add_devices(struct pci_bus *bus)
struct pci_controller *phb;
struct device_node *dn = pci_bus_to_OF_node(bus);
+ if (!dn)
+ return;
+
phb = pci_bus_to_host(bus);
mode = PCI_PROBE_NORMAL;
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 213aa26dc8b3..979487da6522 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -404,6 +404,45 @@ get_device_node_with_drc_info(u32 index)
return NULL;
}
+static struct device_node *
+get_device_node_with_drc_indexes(u32 drc_index)
+{
+ struct device_node *np = NULL;
+ u32 nr_indexes, index;
+ int i, rc;
+
+ for_each_node_with_property(np, "ibm,drc-indexes") {
+ /*
+ * First element in the array is the total number of
+ * DRC indexes returned.
+ */
+ rc = of_property_read_u32_index(np, "ibm,drc-indexes",
+ 0, &nr_indexes);
+ if (rc)
+ goto out_put_np;
+
+ /*
+ * Retrieve DRC index from the list and return the
+ * device node if matched with the specified index.
+ */
+ for (i = 0; i < nr_indexes; i++) {
+ rc = of_property_read_u32_index(np, "ibm,drc-indexes",
+ i+1, &index);
+ if (rc)
+ goto out_put_np;
+
+ if (drc_index == index)
+ return np;
+ }
+ }
+
+ return NULL;
+
+out_put_np:
+ of_node_put(np);
+ return NULL;
+}
+
static int dlpar_hp_dt_add(u32 index)
{
struct device_node *np, *nodes;
@@ -423,10 +462,19 @@ static int dlpar_hp_dt_add(u32 index)
goto out;
}
+ /*
+ * Recent FW provides ibm,drc-info property. So search
+ * for the user specified DRC index from ibm,drc-info
+ * property. If this property is not available, search
+ * in the indexes array from ibm,drc-indexes property.
+ */
np = get_device_node_with_drc_info(index);
- if (!np)
- return -EIO;
+ if (!np) {
+ np = get_device_node_with_drc_indexes(index);
+ if (!np)
+ return -EIO;
+ }
/* Next, configure the connector. */
nodes = dlpar_configure_connector(cpu_to_be32(index), np);
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-17 20:33:55 +0300