18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0 28c2ecf20Sopenharmony_ci#include <asm/io.h> 38c2ecf20Sopenharmony_ci#include <asm/hvcall.h> 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include "hv-gpci.h" 68c2ecf20Sopenharmony_ci#include "hv-common.h" 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ciunsigned long hv_perf_caps_get(struct hv_perf_caps *caps) 98c2ecf20Sopenharmony_ci{ 108c2ecf20Sopenharmony_ci unsigned long r; 118c2ecf20Sopenharmony_ci struct p { 128c2ecf20Sopenharmony_ci struct hv_get_perf_counter_info_params params; 138c2ecf20Sopenharmony_ci struct hv_gpci_system_performance_capabilities caps; 148c2ecf20Sopenharmony_ci } __packed __aligned(sizeof(uint64_t)); 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci struct p arg = { 178c2ecf20Sopenharmony_ci .params = { 188c2ecf20Sopenharmony_ci .counter_request = cpu_to_be32( 198c2ecf20Sopenharmony_ci HV_GPCI_system_performance_capabilities), 208c2ecf20Sopenharmony_ci .starting_index = cpu_to_be32(-1), 218c2ecf20Sopenharmony_ci .counter_info_version_in = 0, 228c2ecf20Sopenharmony_ci } 238c2ecf20Sopenharmony_ci }; 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci r = plpar_hcall_norets(H_GET_PERF_COUNTER_INFO, 268c2ecf20Sopenharmony_ci virt_to_phys(&arg), sizeof(arg)); 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci if (r) 298c2ecf20Sopenharmony_ci return r; 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci pr_devel("capability_mask: 0x%x\n", arg.caps.capability_mask); 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci caps->version = arg.params.counter_info_version_out; 348c2ecf20Sopenharmony_ci caps->collect_privileged = !!arg.caps.perf_collect_privileged; 358c2ecf20Sopenharmony_ci caps->ga = !!(arg.caps.capability_mask & HV_GPCI_CM_GA); 368c2ecf20Sopenharmony_ci caps->expanded = !!(arg.caps.capability_mask & HV_GPCI_CM_EXPANDED); 378c2ecf20Sopenharmony_ci caps->lab = !!(arg.caps.capability_mask & HV_GPCI_CM_LAB); 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci return r; 408c2ecf20Sopenharmony_ci} 41