Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <asm/hvcall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include "hv-gpci.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include "hv-common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) unsigned long hv_perf_caps_get(struct hv_perf_caps *caps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	unsigned long r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	struct p {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 		struct hv_get_perf_counter_info_params params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 		struct hv_gpci_system_performance_capabilities caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	} __packed __aligned(sizeof(uint64_t));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	struct p arg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 		.params = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 			.counter_request = cpu_to_be32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 				HV_GPCI_system_performance_capabilities),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 			.starting_index = cpu_to_be32(-1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 			.counter_info_version_in = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	r = plpar_hcall_norets(H_GET_PERF_COUNTER_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 			       virt_to_phys(&arg), sizeof(arg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	if (r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	pr_devel("capability_mask: 0x%x\n", arg.caps.capability_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	caps->version = arg.params.counter_info_version_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	caps->collect_privileged = !!arg.caps.perf_collect_privileged;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	caps->ga = !!(arg.caps.capability_mask & HV_GPCI_CM_GA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	caps->expanded = !!(arg.caps.capability_mask & HV_GPCI_CM_EXPANDED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	caps->lab = !!(arg.caps.capability_mask & HV_GPCI_CM_LAB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }