3  * PowerNV OPAL Dump Interface
32 	ssize_t (*show)(struct dump_obj *dump, struct dump_attribute *attr,
34 	ssize_t (*store)(struct dump_obj *dump, struct dump_attribute *attr,
49 	case 0x01: return "SP Dump";  in dump_type_to_string()
50 	case 0x02: return "System/Platform Dump";  in dump_type_to_string()
51 	case 0x03: return "SMA Dump";  in dump_type_to_string()
69 	return sprintf(buf, "ack - acknowledge dump\n");  in dump_ack_show()
81 		pr_warn("%s: Failed to send ack to Dump ID 0x%x (%d)\n",  in dump_send_ack()
102 /* Attributes of a dump
103  * The binary attribute of the dump itself is dynamic
104  * due to the dynamic size of the dump
117 	return sprintf(buf, "1 - initiate Service Processor(FSP) dump\n");  in init_dump_show()
126 		pr_warn("%s: Failed to initiate FSP dump (%d)\n",  in dump_fips_init()
140 		pr_info("%s: Initiated FSP dump\n", __func__);  in init_dump_store()
164 	struct dump_obj *dump;  in dump_attr_show()  local
167 	dump = to_dump_obj(kobj);  in dump_attr_show()
172 	return attribute->show(dump, attribute, buf);  in dump_attr_show()
180 	struct dump_obj *dump;  in dump_attr_store()  local
183 	dump = to_dump_obj(kobj);  in dump_attr_store()
188 	return attribute->store(dump, attribute, buf, len);  in dump_attr_store()
198 	struct dump_obj *dump;  in dump_release()  local
200 	dump = to_dump_obj(kobj);  in dump_release()
201 	vfree(dump->buffer);  in dump_release()
202 	kfree(dump);  in dump_release()
230 		pr_warn("%s: Failed to get dump info (%d)\n",  in dump_read_info()
242 static int64_t dump_read_data(struct dump_obj *dump)  in dump_read_data()  argument
249 	dump->buffer = vzalloc(PAGE_ALIGN(dump->size));  in dump_read_data()
250 	if (!dump->buffer) {  in dump_read_data()
257 	list = opal_vmalloc_to_sg_list(dump->buffer, dump->size);  in dump_read_data()
269 		rc = opal_dump_read(dump->id, addr);  in dump_read_data()
277 		pr_warn("%s: Extract dump failed for ID 0x%x\n",  in dump_read_data()
278 			__func__, dump->id);  in dump_read_data()
293 	struct dump_obj *dump = to_dump_obj(kobj);  in dump_attr_read()  local
295 	if (!dump->buffer) {  in dump_attr_read()
296 		rc = dump_read_data(dump);  in dump_attr_read()
299 			vfree(dump->buffer);  in dump_attr_read()
300 			dump->buffer = NULL;  in dump_attr_read()
309 			pr_info("%s: Platform dump partially read. ID = 0x%x\n",  in dump_attr_read()
310 				__func__, dump->id);  in dump_attr_read()
315 	memcpy(buffer, dump->buffer + pos, count);  in dump_attr_read()
317 	/* You may think we could free the dump buffer now and retrieve  in dump_attr_read()
320 	 * we keep the dump around until it's acknowledged by userspace.  in dump_attr_read()
328 	struct dump_obj *dump;  in create_dump_obj()  local
331 	dump = kzalloc(sizeof(*dump), GFP_KERNEL);  in create_dump_obj()
332 	if (!dump)  in create_dump_obj()
335 	dump->kobj.kset = dump_kset;  in create_dump_obj()
337 	kobject_init(&dump->kobj, &dump_ktype);  in create_dump_obj()
339 	sysfs_bin_attr_init(&dump->dump_attr);  in create_dump_obj()
341 	dump->dump_attr.attr.name = "dump";  in create_dump_obj()
342 	dump->dump_attr.attr.mode = 0400;  in create_dump_obj()
343 	dump->dump_attr.size = size;  in create_dump_obj()
344 	dump->dump_attr.read = dump_attr_read;  in create_dump_obj()
346 	dump->id = id;  in create_dump_obj()
347 	dump->size = size;  in create_dump_obj()
348 	dump->type = type;  in create_dump_obj()
350 	rc = kobject_add(&dump->kobj, NULL, "0x%x-0x%x", type, id);  in create_dump_obj()
352 		kobject_put(&dump->kobj);  in create_dump_obj()
357 	 * As soon as the sysfs file for this dump is created/activated there is  in create_dump_obj()
359 	 * acknowledge the dump before kobject_uevent() is called. If that  in create_dump_obj()
371 	kobject_get(&dump->kobj);  in create_dump_obj()
372 	rc = sysfs_create_bin_file(&dump->kobj, &dump->dump_attr);  in create_dump_obj()
374 		kobject_uevent(&dump->kobj, KOBJ_ADD);  in create_dump_obj()
376 		pr_info("%s: New platform dump. ID = 0x%x Size %u\n",  in create_dump_obj()
377 			__func__, dump->id, dump->size);  in create_dump_obj()
380 		kobject_put(&dump->kobj);  in create_dump_obj()
384 	kobject_put(&dump->kobj);  in create_dump_obj()
426 	dump_kset = kset_create_and_add("dump", NULL, opal_kobj);  in opal_platform_dump_init()
428 		pr_warn("%s: Failed to create dump kset\n", __func__);  in opal_platform_dump_init()
434 		pr_warn("%s: Failed to create initiate dump attr group\n",  in opal_platform_dump_init()
449 				"opal-dump", NULL);  in opal_platform_dump_init()