+void vme_bus_error_handler(struct vme_bridge *bridge,
+ unsigned long long address, int am)
+{
+ struct list_head *handler_pos = NULL;
+ struct vme_error_handler *handler;
+ int handler_triggered = 0;
+ u32 aspace = vme_get_aspace(am);
+
+ list_for_each(handler_pos, &bridge->vme_error_handlers) {
+ handler = list_entry(handler_pos, struct vme_error_handler,
+ list);
+ if ((aspace == handler->aspace) &&
+ (address >= handler->start) &&
+ (address < handler->end)) {
+ if (!handler->num_errors)
+ handler->first_error = address;
+ if (handler->num_errors != UINT_MAX)
+ handler->num_errors++;
+ handler_triggered = 1;
+ }
+ }
+
+ if (!handler_triggered)
+ dev_err(bridge->parent,
+ "Unhandled VME access error at address 0x%llx\n",
+ address);
+}
+EXPORT_SYMBOL(vme_bus_error_handler);
+
+struct vme_error_handler *vme_register_error_handler(
+ struct vme_bridge *bridge, u32 aspace,
+ unsigned long long address, size_t len)
+{
+ struct vme_error_handler *handler;
+
+ handler = kmalloc(sizeof(*handler), GFP_KERNEL);
+ if (!handler)
+ return NULL;
+
+ handler->aspace = aspace;
+ handler->start = address;
+ handler->end = address + len;
+ handler->num_errors = 0;
+ handler->first_error = 0;
+ list_add_tail(&handler->list, &bridge->vme_error_handlers);
+
+ return handler;
+}
+EXPORT_SYMBOL(vme_register_error_handler);
+
+void vme_unregister_error_handler(struct vme_error_handler *handler)
+{
+ list_del(&handler->list);
+ kfree(handler);
+}
+EXPORT_SYMBOL(vme_unregister_error_handler);
+