1 // SPDX-License-Identifier: GPL-2.0
14 /* ACPI P-States Helper Functions for AMD Processors ***************/
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
123 		return -1;  in decode_pstates()
126 		return -1;  in decode_pstates()
134 			return -1;  in decode_pstates()
137 			return -1;  in decode_pstates()
149 int amd_pci_get_num_boost_states(int *active, int *states)  in amd_pci_get_num_boost_states()  argument
155 	*active = *states = 0;  in amd_pci_get_num_boost_states()
160 		return -ENODEV;  in amd_pci_get_num_boost_states()
164 		*active = 1;  in amd_pci_get_num_boost_states()
166 		*active = 0;  in amd_pci_get_num_boost_states()
173 /* ACPI P-States Helper Functions for AMD Processors ***************/
175 /* AMD P-State Helper Functions ************************************/
202 void amd_pstate_boost_init(unsigned int cpu, int *support, int *active)  in amd_pstate_boost_init()  argument
217 	*active = cpuinfo_max == amd_pstate_max ? 1 : 0;  in amd_pstate_boost_init()
223 	printf(_("  amd-pstate limits:\n"));  in amd_pstate_show_perf_and_freq()
227 	 * If boost isn't active, the cpuinfo_max doesn't indicate real max  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()
239 	printf(_("    Lowest Non-linear Performance: %lu. Lowest Non-linear Frequency: "),  in amd_pstate_show_perf_and_freq()
255 /* AMD P-State Helper Functions ************************************/