Lines Matching +full:used +full:- +full:by +full:- +full:rtas

1 // SPDX-License-Identifier: GPL-2.0-or-later
36 #include <asm/rtas.h>
43 #include <asm/code-patching.h>
49  * The Primary thread of each non-boot processor was started from the OF client
50  * interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
58 	int qcss_tok = rtas_token("query-cpu-stopped-state");  in smp_query_cpu_stopped()
62 			"Firmware doesn't support query-cpu-stopped-state\n");  in smp_query_cpu_stopped()
69 		       "RTAS query-cpu-stopped-state failed: %i\n", status);  in smp_query_cpu_stopped()
77  * smp_startup_cpu() - start the given cpu
80  * started from Open Firmware.  For anything else, call RTAS with the
84  *	0	- failure
85  *	1	- success
96 		/* Already started by OF and sitting in spin loop */  in smp_startup_cpu()
108 	task_thread_info(paca_ptrs[lcpu]->__current)->preempt_count	= 0;  in smp_startup_cpu()
111 	 * If the RTAS start-cpu token does not exist then presume the  in smp_startup_cpu()
114 	start_cpu = rtas_token("start-cpu");  in smp_startup_cpu()
120 		printk(KERN_ERR "start-cpu failed: %i\n", status);  in smp_startup_cpu()
143 		return -EINVAL;  in smp_pSeries_kick_cpu()
146 		return -ENOENT;  in smp_pSeries_kick_cpu()
150 	 * cpu_start field to become non-zero After we set cpu_start,  in smp_pSeries_kick_cpu()
153 	paca_ptrs[nr]->cpu_start = 1;  in smp_pSeries_kick_cpu()
165 /* Cause IPI as setup by the interrupt controller (xics or xive) */
209 	/* Doorbells can only be used for IPIs between SMT siblings */  in pSeries_smp_probe()
215 		 * KVM emulates doorbells by disabling FSCR[MSGP] so msgsndp  in pSeries_smp_probe()
235 	 * faster than the interrupt controller, and they can be used by  in pSeries_smp_probe()
239 	ic_cause_ipi = smp_ops->cause_ipi;  in pSeries_smp_probe()
240 	smp_ops->cause_ipi = dbell_or_ic_cause_ipi;  in pSeries_smp_probe()
245 	.cause_ipi	= NULL,	/* Filled at runtime by pSeries_smp_probe() */
259 	pr_debug(" -> smp_init_pSeries()\n");  in smp_init_pseries()
267 	 * We know prom_init will not have started them if RTAS supports  in smp_init_pseries()
268 	 * query-cpu-stopped-state.  in smp_init_pseries()
270 	if (rtas_token("query-cpu-stopped-state") == RTAS_UNKNOWN_SERVICE) {  in smp_init_pseries()
282 	/* Non-lpar has additional take/give timebase */  in smp_init_pseries()
283 	if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) {  in smp_init_pseries()
284 		smp_ops->give_timebase = rtas_give_timebase;  in smp_init_pseries()
285 		smp_ops->take_timebase = rtas_take_timebase;  in smp_init_pseries()
288 	pr_debug(" <- smp_init_pSeries()\n");  in smp_init_pseries()