1 // SPDX-License-Identifier: GPL-2.0-only
4  * FPDT support for exporting boot and suspend/resume performance data
19  * performance data fields, for boot or suspend or resume phase.
31 	u64 address;		/* physical address of the S3PT/FBPT table */  member
83 	return sprintf(buf, "%llu\n", record_##phase->name);	\
90 FPDT_ATTR(suspend, suspend_start);
91 FPDT_ATTR(suspend, suspend_end);
101 	return sprintf(buf, "%u\n", record_resume->resume_count);  in resume_count_show()
127 	.name = "suspend",
148 static bool fpdt_address_valid(u64 address)  in fpdt_address_valid()  argument
152 	 * with unsuppored high address bits set, check for this.  in fpdt_address_valid()
154 	return !(address >> boot_cpu_data.x86_phys_bits);  in fpdt_address_valid()
157 static bool fpdt_address_valid(u64 address)  in fpdt_address_valid()  argument
163 static int fpdt_process_subtable(u64 address, u32 subtable_type)  in fpdt_process_subtable()  argument
171 	if (!fpdt_address_valid(address)) {  in fpdt_process_subtable()
172 		pr_info(FW_BUG "invalid physical address: 0x%llx!\n", address);  in fpdt_process_subtable()
173 		return -EINVAL;  in fpdt_process_subtable()
176 	subtable_header = acpi_os_map_memory(address, sizeof(*subtable_header));  in fpdt_process_subtable()
178 		return -ENOMEM;  in fpdt_process_subtable()
180 	if (strncmp((char *)&subtable_header->signature, signature, 4)) {  in fpdt_process_subtable()
182 		return -EINVAL;  in fpdt_process_subtable()
185 	length = subtable_header->length;  in fpdt_process_subtable()
188 	subtable_header = acpi_os_map_memory(address, length);  in fpdt_process_subtable()
190 		return -ENOMEM;  in fpdt_process_subtable()
195 		offset += record_header->length;  in fpdt_process_subtable()
197 		if (!record_header->length) {  in fpdt_process_subtable()
198 			pr_err(FW_BUG "Zero-length record found in FPTD.\n");  in fpdt_process_subtable()
199 			result = -EINVAL;  in fpdt_process_subtable()
203 		switch (record_header->type) {  in fpdt_process_subtable()
207 				     record_header->type, signature);  in fpdt_process_subtable()
208 				result = -EINVAL;  in fpdt_process_subtable()
223 				     record_header->type, signature);  in fpdt_process_subtable()
227 				pr_err("Duplicate suspend performance record found.\n");  in fpdt_process_subtable()
238 				     record_header->type, signature);  in fpdt_process_subtable()
239 				result = -EINVAL;  in fpdt_process_subtable()
287 		result = -ENOMEM;  in acpi_init_fpdt()
291 	while (offset < header->length) {  in acpi_init_fpdt()
293 		switch (subtable->type) {  in acpi_init_fpdt()
296 			result = fpdt_process_subtable(subtable->address,  in acpi_init_fpdt()
297 					      subtable->type);  in acpi_init_fpdt()