1 // SPDX-License-Identifier: GPL-2.0-only
6  * This pseries platform device driver provides access to
34 /* Helper Routines to convert between drc_index to cpu numbers */
48 	/* Convert logical cpu number to core number */  in cpu_to_drc_index()
51 	info = of_find_property(dn, "ibm,drc-info", NULL);  in cpu_to_drc_index()
79 		 * The first element of ibm,drc-indexes array is the  in cpu_to_drc_index()
82 		 * to core number thread_index.  in cpu_to_drc_index()
84 		rc = of_property_read_u32_index(dn, "ibm,drc-indexes",  in cpu_to_drc_index()
90 		rc = of_property_read_u32_index(dn, "ibm,drc-indexes",  in cpu_to_drc_index()
120 	info = of_find_property(dn, "ibm,drc-info", NULL);  in drc_index_to_cpu()
143 			cpu += ((drc_index - drc.drc_index_start) /  in drc_index_to_cpu()
153 		indexes = of_get_property(dn, "ibm,drc-indexes", NULL);  in drc_index_to_cpu()
158 		 * returned.  Search through the list to find the matching  in drc_index_to_cpu()
165 		/* Convert core number to logical cpu number */  in drc_index_to_cpu()
179  * pseries hypervisor call H_BEST_ENERGY provides hints to OS on
180  * preferred logical cpus to activate or deactivate for optimized
188 static ssize_t get_best_energy_list(char *page, int activate)  in get_best_energy_list()  argument
198 		return -ENOMEM;  in get_best_energy_list()
201 	if (activate)  in get_best_energy_list()
208 		return -EINVAL;  in get_best_energy_list()
214 		if ((cpu_online(cpu) && !activate) ||  in get_best_energy_list()
215 		    (!cpu_online(cpu) && activate))  in get_best_energy_list()
218 	if (s > page) { /* Something to show */  in get_best_energy_list()
219 		s--; /* Suppress last comma */  in get_best_energy_list()
224 	return s-page;  in get_best_energy_list()
228 					char *page, int activate)  in get_best_energy_data()  argument
235 	if (activate)  in get_best_energy_data()
239 				cpu_to_drc_index(dev->id),  in get_best_energy_data()
243 		return -EINVAL;  in get_best_energy_data()
278  *	Comma separated list of cpus to activate or deactivate
281  *	Per-cpu value of the hint
357 		sysfs_remove_file(&cpu_dev->kobj,  in pseries_energy_cleanup()
359 		sysfs_remove_file(&cpu_dev->kobj,  in pseries_energy_cleanup()