@@ -71,6 +71,7 @@ struct eeh_pe {
struct list_head child_list; /* Link PE to the child list */
struct list_head edevs; /* Link list of EEH devices */
struct list_head child; /* Child PEs */
+ void *data; /* Platform dependent data */
};
#define eeh_pe_for_each_dev(pe, edev, tmp) \
@@ -151,6 +152,10 @@ enum {
#define EEH_LOG_TEMP 1 /* EEH temporary error log */
#define EEH_LOG_PERM 2 /* EEH permanent error log */
+/* EEH events sent to platform */
+#define EEH_EVENT_PE_ALLOC 0
+#define EEH_EVENT_PE_FREE 1
+
struct eeh_ops {
char *name;
int (*init)(void);
@@ -168,6 +173,7 @@ struct eeh_ops {
int (*write_config)(struct device_node *dn, int where, int size, u32 val);
int (*next_error)(struct eeh_pe **pe);
int (*restore_config)(struct device_node *dn);
+ int (*event)(int event, void *data);
};
extern struct eeh_ops *eeh_ops;
@@ -44,6 +44,7 @@ static LIST_HEAD(eeh_phb_pe);
static struct eeh_pe *eeh_pe_alloc(struct pci_controller *phb, int type)
{
struct eeh_pe *pe;
+ int ret;
/* Allocate PHB PE */
pe = kzalloc(sizeof(struct eeh_pe), GFP_KERNEL);
@@ -56,6 +57,16 @@ static struct eeh_pe *eeh_pe_alloc(struct pci_controller *phb, int type)
INIT_LIST_HEAD(&pe->child);
INIT_LIST_HEAD(&pe->edevs);
+ if (eeh_ops->event) {
+ ret = eeh_ops->event(EEH_EVENT_PE_ALLOC, pe);
+ if (ret) {
+ pr_warn("%s: Can't alloc PE (%d)\n",
+ __func__, ret);
+ kfree(pe);
+ return NULL;
+ }
+ }
+
return pe;
}
@@ -77,6 +88,9 @@ static void eeh_pe_free(struct eeh_pe *pe)
return;
}
+ if (eeh_ops->event)
+ eeh_ops->event(EEH_EVENT_PE_FREE, pe);
+
kfree(pe);
}
The patch introduces eeh_ops->event() so that we can pass various events to underly platform. One reason to have that is to allocate or free PHB diag-data for individual PEs on PowerNV platform in future when EEH core to create or destroy PE instances. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> --- arch/powerpc/include/asm/eeh.h | 6 ++++++ arch/powerpc/kernel/eeh_pe.c | 14 ++++++++++++++ 2 files changed, 20 insertions(+)