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146 lines
3.3 KiB
146 lines
3.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <stdio.h> |
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#include <errno.h> |
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#include <stdlib.h> |
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#include "helpers/helpers.h" |
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#include "helpers/sysfs.h" |
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#if defined(__i386__) || defined(__x86_64__) |
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#include "cpupower_intern.h" |
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#define MSR_AMD_HWCR 0xc0010015 |
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int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active, |
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int *states) |
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{ |
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int ret; |
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unsigned long long val; |
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*support = *active = *states = 0; |
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if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CPB) { |
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*support = 1; |
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/* AMD Family 0x17 does not utilize PCI D18F4 like prior |
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* families and has no fixed discrete boost states but |
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* has Hardware determined variable increments instead. |
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*/ |
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if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CPB_MSR) { |
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if (!read_msr(cpu, MSR_AMD_HWCR, &val)) { |
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if (!(val & CPUPOWER_AMD_CPBDIS)) |
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*active = 1; |
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} |
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} else { |
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ret = amd_pci_get_num_boost_states(active, states); |
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if (ret) |
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return ret; |
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} |
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} else if (cpupower_cpu_info.caps & CPUPOWER_CAP_INTEL_IDA) |
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*support = *active = 1; |
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return 0; |
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} |
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int cpupower_intel_get_perf_bias(unsigned int cpu) |
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{ |
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char linebuf[MAX_LINE_LEN]; |
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char path[SYSFS_PATH_MAX]; |
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unsigned long val; |
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char *endp; |
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if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) |
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return -1; |
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snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/power/energy_perf_bias", cpu); |
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if (cpupower_read_sysfs(path, linebuf, MAX_LINE_LEN) == 0) |
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return -1; |
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val = strtol(linebuf, &endp, 0); |
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if (endp == linebuf || errno == ERANGE) |
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return -1; |
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return val; |
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} |
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int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val) |
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{ |
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char path[SYSFS_PATH_MAX]; |
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char linebuf[3] = {}; |
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if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) |
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return -1; |
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snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/power/energy_perf_bias", cpu); |
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snprintf(linebuf, sizeof(linebuf), "%d", val); |
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if (cpupower_write_sysfs(path, linebuf, 3) <= 0) |
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return -1; |
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return 0; |
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} |
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#endif /* #if defined(__i386__) || defined(__x86_64__) */ |
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/* get_cpustate |
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* |
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* Gather the information of all online CPUs into bitmask struct |
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*/ |
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void get_cpustate(void) |
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{ |
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unsigned int cpu = 0; |
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bitmask_clearall(online_cpus); |
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bitmask_clearall(offline_cpus); |
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for (cpu = bitmask_first(cpus_chosen); |
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cpu <= bitmask_last(cpus_chosen); cpu++) { |
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if (cpupower_is_cpu_online(cpu) == 1) |
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bitmask_setbit(online_cpus, cpu); |
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else |
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bitmask_setbit(offline_cpus, cpu); |
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continue; |
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} |
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} |
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/* print_online_cpus |
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* |
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* Print the CPU numbers of all CPUs that are online currently |
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*/ |
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void print_online_cpus(void) |
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{ |
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int str_len = 0; |
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char *online_cpus_str = NULL; |
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str_len = online_cpus->size * 5; |
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online_cpus_str = (void *)malloc(sizeof(char) * str_len); |
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if (!bitmask_isallclear(online_cpus)) { |
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bitmask_displaylist(online_cpus_str, str_len, online_cpus); |
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printf(_("Following CPUs are online:\n%s\n"), online_cpus_str); |
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} |
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} |
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/* print_offline_cpus |
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* |
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* Print the CPU numbers of all CPUs that are offline currently |
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*/ |
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void print_offline_cpus(void) |
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{ |
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int str_len = 0; |
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char *offline_cpus_str = NULL; |
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str_len = offline_cpus->size * 5; |
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offline_cpus_str = (void *)malloc(sizeof(char) * str_len); |
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if (!bitmask_isallclear(offline_cpus)) { |
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bitmask_displaylist(offline_cpus_str, str_len, offline_cpus); |
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printf(_("Following CPUs are offline:\n%s\n"), offline_cpus_str); |
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printf(_("cpupower set operation was not performed on them\n")); |
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} |
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}
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