1 // SPDX-License-Identifier: GPL-2.0-or-later
4  * Author: Paul Burton <paul.burton@mips.com>
18 #include <asm/mips-cps.h>
21 #include <asm/pm-cps.h>
23 #include <asm/smp-cps.h>
74 			for (v = 0; v < min_t(int, core_vpes, NR_CPUS - nvpes); v++) {  in cps_smp_setup()
113 	/* If we have an FPU, enroll ourselves in the FPU-full mask */  in cps_smp_setup()
127 	/* Detect whether the CCA is unsuited to multi-core SMP */  in cps_prepare_cpus()
132 		/* The CCA is coherent, multi-core is fine */  in cps_prepare_cpus()
137 		/* CCA is not coherent, multi-core is not usable */  in cps_prepare_cpus()
141 	/* Warn the user if the CCA prevents multi-core */  in cps_prepare_cpus()
168 		     (void *)entry_code - (void *)&mips_cps_core_entry);  in cps_prepare_cpus()
265 				timeout--;  in boot_core()
300 	struct vpe_boot_config *vpe_cfg = &core_cfg->vpe_config[vpe_id];  in cps_boot_secondary()
307 		return -ENOSYS;  in cps_boot_secondary()
309 	vpe_cfg->pc = (unsigned long)&smp_bootstrap;  in cps_boot_secondary()
310 	vpe_cfg->sp = __KSTK_TOS(idle);  in cps_boot_secondary()
311 	vpe_cfg->gp = (unsigned long)task_thread_info(idle);  in cps_boot_secondary()
313 	atomic_or(1 << cpu_vpe_id(&cpu_data[cpu]), &core_cfg->vpe_mask);  in cps_boot_secondary()
362 	/* Disable MT - we only want to run 1 TC per VPE */  in cps_init_secondary()
371 		 * what the GIC reports, otherwise we'll have configured  in cps_init_secondary()
390 	/* If we have an FPU, enroll ourselves in the FPU-full mask */  in cps_smp_finish()
455 		return -EINVAL;  in cps_cpu_disable()
458 	atomic_sub(1 << cpu_vpe_id(&current_cpu_data), &core_cfg->vpe_mask);  in cps_cpu_disable()
538 	 *   - Onlining the CPU again.  in cps_cpu_die()
539 	 *   - Powering down the core if another VPE within it is offlined.  in cps_cpu_die()
540 	 *   - A sibling VPE entering a non-coherent state.  in cps_cpu_die()
542 	 * In the non-MT halt case (ie. infinite loop) the CPU is doing nothing  in cps_cpu_die()
632 		pr_warn("MIPS CPS SMP unable to proceed without a CM\n");  in register_cps_smp_ops()
633 		return -ENODEV;  in register_cps_smp_ops()
636 	/* check we have a GIC - we need one for IPIs */  in register_cps_smp_ops()
638 		pr_warn("MIPS CPS SMP unable to proceed without a GIC\n");  in register_cps_smp_ops()
639 		return -ENODEV;  in register_cps_smp_ops()