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()
231 		pr_warn("%s: Failed to get dump info (%d)\n",  in dump_read_info()
243 static int64_t dump_read_data(struct dump_obj *dump)  in dump_read_data()  argument
250 	dump->buffer = vzalloc(PAGE_ALIGN(dump->size));  in dump_read_data()
251 	if (!dump->buffer) {  in dump_read_data()
258 	list = opal_vmalloc_to_sg_list(dump->buffer, dump->size);  in dump_read_data()
270 		rc = opal_dump_read(dump->id, addr);  in dump_read_data()
278 		pr_warn("%s: Extract dump failed for ID 0x%x\n",  in dump_read_data()
279 			__func__, dump->id);  in dump_read_data()
294 	struct dump_obj *dump = to_dump_obj(kobj);  in dump_attr_read()  local
296 	if (!dump->buffer) {  in dump_attr_read()
297 		rc = dump_read_data(dump);  in dump_attr_read()
300 			vfree(dump->buffer);  in dump_attr_read()
301 			dump->buffer = NULL;  in dump_attr_read()
310 			pr_info("%s: Platform dump partially read. ID = 0x%x\n",  in dump_attr_read()
311 				__func__, dump->id);  in dump_attr_read()
316 	memcpy(buffer, dump->buffer + pos, count);  in dump_attr_read()
318 	/* You may think we could free the dump buffer now and retrieve  in dump_attr_read()
321 	 * we keep the dump around until it's acknowledged by userspace.  in dump_attr_read()
329 	struct dump_obj *dump;  in create_dump_obj()  local
332 	dump = kzalloc(sizeof(*dump), GFP_KERNEL);  in create_dump_obj()
333 	if (!dump)  in create_dump_obj()
336 	dump->kobj.kset = dump_kset;  in create_dump_obj()
338 	kobject_init(&dump->kobj, &dump_ktype);  in create_dump_obj()
340 	sysfs_bin_attr_init(&dump->dump_attr);  in create_dump_obj()
342 	dump->dump_attr.attr.name = "dump";  in create_dump_obj()
343 	dump->dump_attr.attr.mode = 0400;  in create_dump_obj()
344 	dump->dump_attr.size = size;  in create_dump_obj()
345 	dump->dump_attr.read = dump_attr_read;  in create_dump_obj()
347 	dump->id = id;  in create_dump_obj()
348 	dump->size = size;  in create_dump_obj()
349 	dump->type = type;  in create_dump_obj()
351 	rc = kobject_add(&dump->kobj, NULL, "0x%x-0x%x", type, id);  in create_dump_obj()
353 		kobject_put(&dump->kobj);  in create_dump_obj()
358 	 * As soon as the sysfs file for this dump is created/activated there is  in create_dump_obj()
360 	 * acknowledge the dump before kobject_uevent() is called. If that  in create_dump_obj()
372 	kobject_get(&dump->kobj);  in create_dump_obj()
373 	rc = sysfs_create_bin_file(&dump->kobj, &dump->dump_attr);  in create_dump_obj()
375 		kobject_uevent(&dump->kobj, KOBJ_ADD);  in create_dump_obj()
377 		pr_info("%s: New platform dump. ID = 0x%x Size %u\n",  in create_dump_obj()
378 			__func__, dump->id, dump->size);  in create_dump_obj()
381 		kobject_put(&dump->kobj);  in create_dump_obj()
385 	kobject_put(&dump->kobj);  in create_dump_obj()
423 	/* Dump not supported by firmware */  in opal_platform_dump_init()
427 	dump_kset = kset_create_and_add("dump", NULL, opal_kobj);  in opal_platform_dump_init()
429 		pr_warn("%s: Failed to create dump kset\n", __func__);  in opal_platform_dump_init()
435 		pr_warn("%s: Failed to create initiate dump attr group\n",  in opal_platform_dump_init()
450 				"opal-dump", NULL);  in opal_platform_dump_init()