1 // SPDX-License-Identifier: GPL-2.0
14 /* ACPI P-States Helper Functions for AMD Processors ***************/
29 		unsigned iddval:8;
36 		unsigned fid:8;
38 		unsigned vid:8;
39 		unsigned iddval:8;
48 		unsigned vid:8;
49 		unsigned iddval:8;
101  * cpu          -> the cpu that gets evaluated
102  * boost_states -> how much boost states the machines support
105  * pstates -> a pointer to an array of size MAX_HW_PSTATES
108  * no      -> amount of pstates above array got filled up with
110  * returns zero on success, -1 on failure
112 int decode_pstates(unsigned int cpu, int boost_states,  in decode_pstates()  argument
123 		return -1;  in decode_pstates()
125 	if (read_msr(cpu, MSR_AMD_PSTATE_LIMIT, &val))  in decode_pstates()
126 		return -1;  in decode_pstates()
134 			return -1;  in decode_pstates()
136 		if (read_msr(cpu, MSR_AMD_PSTATE + i, &pstate.val))  in decode_pstates()
137 			return -1;  in decode_pstates()
160 		return -ENODEV;  in amd_pci_get_num_boost_states()
173 /* ACPI P-States Helper Functions for AMD Processors ***************/
175 /* AMD P-State Helper Functions ************************************/
193 static unsigned long amd_pstate_get_data(unsigned int cpu,  in amd_pstate_get_data()  argument
196 	return cpufreq_get_sysfs_value_from_table(cpu,  in amd_pstate_get_data()
202 void amd_pstate_boost_init(unsigned int cpu, int *support, int *active)  in amd_pstate_boost_init()  argument
207 	highest_perf = amd_pstate_get_data(cpu, AMD_PSTATE_HIGHEST_PERF);  in amd_pstate_boost_init()
208 	nominal_perf = acpi_cppc_get_data(cpu, NOMINAL_PERF);  in amd_pstate_boost_init()
214 	cpufreq_get_hardware_limits(cpu, &cpuinfo_min, &cpuinfo_max);  in amd_pstate_boost_init()
215 	amd_pstate_max = amd_pstate_get_data(cpu, AMD_PSTATE_MAX_FREQ);  in amd_pstate_boost_init()
220 void amd_pstate_show_perf_and_freq(unsigned int cpu, int no_rounding)  in amd_pstate_show_perf_and_freq()  argument
223 	printf(_("  amd-pstate limits:\n"));  in amd_pstate_show_perf_and_freq()
225 	       amd_pstate_get_data(cpu, AMD_PSTATE_HIGHEST_PERF));  in amd_pstate_show_perf_and_freq()
228 	 * frequency. So we read it back from amd-pstate sysfs entry.  in amd_pstate_show_perf_and_freq()
230 	print_speed(amd_pstate_get_data(cpu, AMD_PSTATE_MAX_FREQ), no_rounding);  in amd_pstate_show_perf_and_freq()
234 	       acpi_cppc_get_data(cpu, NOMINAL_PERF));  in amd_pstate_show_perf_and_freq()
235 	print_speed(acpi_cppc_get_data(cpu, NOMINAL_FREQ) * 1000,  in amd_pstate_show_perf_and_freq()
239 	printf(_("    Lowest Non-linear Performance: %lu. Lowest Non-linear Frequency: "),  in amd_pstate_show_perf_and_freq()
240 	       acpi_cppc_get_data(cpu, LOWEST_NONLINEAR_PERF));  in amd_pstate_show_perf_and_freq()
241 	print_speed(amd_pstate_get_data(cpu, AMD_PSTATE_LOWEST_NONLINEAR_FREQ),  in amd_pstate_show_perf_and_freq()
246 	       acpi_cppc_get_data(cpu, LOWEST_PERF));  in amd_pstate_show_perf_and_freq()
247 	print_speed(acpi_cppc_get_data(cpu, LOWEST_FREQ) * 1000, no_rounding);  in amd_pstate_show_perf_and_freq()
251 	       amd_pstate_get_data(cpu, AMD_PSTATE_HW_PREFCORE),  in amd_pstate_show_perf_and_freq()
252 	       amd_pstate_get_data(cpu, AMD_PSTATE_PREFCORE_RANKING));  in amd_pstate_show_perf_and_freq()
255 /* AMD P-State Helper Functions ************************************/