1 // SPDX-License-Identifier: GPL-2.0-or-later
19 #include <asm/mips-cps.h>
22 #include <asm/pm-cps.h>
26 #include <asm/smp-cps.h>
115 						0x0, CSEGX_SIZE - 1);  in allocate_cps_vecs()
128 			end = SZ_4G - 1;  in allocate_cps_vecs()
142 		return -ENOMEM;  in allocate_cps_vecs()
193 			for (v = 0; v < min_t(int, core_vpes, NR_CPUS - nvpes); v++) {  in cps_smp_setup()
233 	/* If we have an FPU, enroll ourselves in the FPU-full mask */  in cps_smp_setup()
247 		pr_err("core_entry address unsuitable, disabling smp-cps\n");  in cps_prepare_cpus()
251 	/* Detect whether the CCA is unsuited to multi-core SMP */  in cps_prepare_cpus()
256 		/* The CCA is coherent, multi-core is fine */  in cps_prepare_cpus()
261 		/* CCA is not coherent, multi-core is not usable */  in cps_prepare_cpus()
265 	/* Warn the user if the CCA prevents multi-core */  in cps_prepare_cpus()
384 				timeout--;  in boot_core()
414 static int cps_boot_secondary(int cpu, struct task_struct *idle)  in cps_boot_secondary()  argument
419 	struct vpe_boot_config *vpe_cfg = &core_cfg->vpe_config[vpe_id];  in cps_boot_secondary()
425 		return -ENOSYS;  in cps_boot_secondary()
427 	vpe_cfg->pc = (unsigned long)&smp_bootstrap;  in cps_boot_secondary()
428 	vpe_cfg->sp = __KSTK_TOS(idle);  in cps_boot_secondary()
429 	vpe_cfg->gp = (unsigned long)task_thread_info(idle);  in cps_boot_secondary()
431 	atomic_or(1 << cpu_vpe_id(&cpu_data[cpu]), &core_cfg->vpe_mask);  in cps_boot_secondary()
484 	/* Disable MT - we only want to run 1 TC per VPE */  in cps_init_secondary()
515 	/* If we have an FPU, enroll ourselves in the FPU-full mask */  in cps_smp_finish()
542 			/* Halt this TC */  in cps_shutdown_this_cpu()
582 		return -EINVAL;  in cps_cpu_disable()
585 	atomic_sub(1 << cpu_vpe_id(&current_cpu_data), &core_cfg->vpe_mask);  in cps_cpu_disable()
615 			 * There is an online VPE within the core. Just halt  in play_dead()
660 	 *   - Onlining the CPU again.  in cps_cleanup_dead_cpu()
661 	 *   - Powering down the core if another VPE within it is offlined.  in cps_cleanup_dead_cpu()
662 	 *   - A sibling VPE entering a non-coherent state.  in cps_cleanup_dead_cpu()
664 	 * In the non-MT halt case (ie. infinite loop) the CPU is doing nothing  in cps_cleanup_dead_cpu()
710 		 * for its TC to halt.  in cps_cleanup_dead_cpu()
756 		return -ENODEV;  in register_cps_smp_ops()
759 	/* check we have a GIC - we need one for IPIs */  in register_cps_smp_ops()
762 		return -ENODEV;  in register_cps_smp_ops()