1 // SPDX-License-Identifier: GPL-2.0-or-later
31 #include <asm/text-patching.h>
34 #include <asm/ppc-opcode.h>
74 		return -EINVAL;  in pnv_smp_kick_cpu()
78 	 * If we already started or OPAL is not supported, we just  in pnv_smp_kick_cpu()
81 	if (paca_ptrs[nr]->cpu_start || !firmware_has_feature(FW_FEATURE_OPAL))  in pnv_smp_kick_cpu()
86 	 * from kexec or be inside OPAL waiting to be started for the  in pnv_smp_kick_cpu()
93 		return -ENODEV;  in pnv_smp_kick_cpu()
97 	 * Already started, just kick it, probably coming from  in pnv_smp_kick_cpu()
111 			return -ENODEV;  in pnv_smp_kick_cpu()
116 		 * shouldn't be started. It should also  in pnv_smp_kick_cpu()
122 		return -ENODEV;  in pnv_smp_kick_cpu()
137 	 * the generic fixup_irqs. --BenH.  in pnv_smp_cpu_disable()
141 	systemcfg->processorCount--;  in pnv_smp_cpu_disable()
186 	 * This turns the irq soft-disabled state we're called with, into a  in pnv_cpu_offline_self()
187 	 * hard-disabled state with pending irq_happened interrupts cleared.  in pnv_cpu_offline_self()
189 	 * PACA_IRQ_DEC   - Decrementer should be ignored.  in pnv_cpu_offline_self()
190 	 * PACA_IRQ_HMI   - Can be ignored, processing is done in real mode.  in pnv_cpu_offline_self()
191 	 * PACA_IRQ_DBELL, EE, PMI - Unexpected.  in pnv_cpu_offline_self()
198 	if (local_paca->irq_happened & unexpected_mask) {  in pnv_cpu_offline_self()
199 		if (local_paca->irq_happened & PACA_IRQ_EE)  in pnv_cpu_offline_self()
202 				cpu, local_paca->irq_happened);  in pnv_cpu_offline_self()
204 	local_paca->irq_happened = PACA_IRQ_HARD_DIS;  in pnv_cpu_offline_self()
222 		 * offline, except for those when changing micro-threading  in pnv_cpu_offline_self()
287 	 * Re-enable decrementer interrupts in LPCR.  in pnv_cpu_offline_self()
290 	 * for non-hotplug cases. So program the LPCR via stop api as  in pnv_cpu_offline_self()
307 	 * setting (smt-enabled on the kernel command line).  in pnv_cpu_bootable()
341 		ic_cause_ipi = smp_ops->cause_ipi;  in pnv_smp_probe()
345 			smp_ops->cause_ipi = doorbell_global_ipi;  in pnv_smp_probe()
347 			smp_ops->cause_ipi = pnv_cause_ipi;  in pnv_smp_probe()
382 			opal_quiesce(QUIESCE_HOLD, -1);  in pnv_cause_nmi_ipi()
400 			opal_quiesce(QUIESCE_RESUME, -1);  in pnv_cause_nmi_ipi()