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42 lines
1.1 KiB
42 lines
1.1 KiB
/* |
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* Copyright (c) 2024 Intel Corporation. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#include <zephyr/kernel.h> |
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#include <zephyr/irq_offload.h> |
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#include <kernel_arch_data.h> |
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#include <x86_mmu.h> |
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#include <zephyr/init.h> |
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#define NR_IRQ_VECTORS (IV_NR_VECTORS - IV_IRQS) /* # vectors free for IRQs */ |
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extern void (*x86_irq_funcs[NR_IRQ_VECTORS])(const void *arg); |
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extern const void *x86_irq_args[NR_IRQ_VECTORS]; |
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int arch_smp_init(void) |
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{ |
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/* |
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* z_sched_ipi() doesn't have the same signature as a typical ISR, so |
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* we fudge it with a cast. the argument is ignored, no harm done. |
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*/ |
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x86_irq_funcs[CONFIG_SCHED_IPI_VECTOR - IV_IRQS] = |
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(void *) z_sched_ipi; |
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/* TLB shootdown handling */ |
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x86_irq_funcs[CONFIG_TLB_IPI_VECTOR - IV_IRQS] = z_x86_tlb_ipi; |
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return 0; |
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} |
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/* |
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* it is not clear exactly how/where/why to abstract this, as it |
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* assumes the use of a local APIC (but there's no other mechanism). |
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*/ |
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void arch_sched_broadcast_ipi(void) |
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{ |
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z_loapic_ipi(0, LOAPIC_ICR_IPI_OTHERS, CONFIG_SCHED_IPI_VECTOR); |
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} |
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SYS_INIT(arch_smp_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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