mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-11-15 21:01:04 +00:00
e5831fec1e
The following pcpu related interfaces are moved into common: - common/cpu.c::start_pcpus - include/common/cpu.h::get_pcpu_id - include/common/cpu.h::set_current_pcpu_id Their arch specific implementations are moved into arch/$(ARCH): - arch/$(ARCH)/cpu.c::arch_start_pcpu - include/arch/$(ARCH)/asm/cpu.h::arch_get_pcpu_id - include/arch/$(ARCH)/asm/cpu.h::arch_set_current_pcpu_id The following interface is moved into common: - pcpu_set_current_state (from arch/x86/cpu.c -> common/cpu.c) The following MACROs are moved into include/common/cpu.h: - CPU_UP_TIMEOUT - CPU_DOWN_TIMEOUT - BSP_CPU_ID - INVALID_CPU_ID Tracked-On: #8791 Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com> Acked-by: Wang, Yu1 <yu1.wang@intel.com>
115 lines
2.3 KiB
C
115 lines
2.3 KiB
C
/*
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* Copyright (C) 2025 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <per_cpu.h>
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#include <cpu.h>
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#include <delay.h>
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#include <logmsg.h>
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#include <bits.h>
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static volatile uint64_t pcpu_active_bitmap = 0UL;
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/*
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* @post return <= MAX_PCPU_NUM
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*/
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uint16_t get_pcpu_nums(void)
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{
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return arch_get_pcpu_num();
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}
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bool is_pcpu_active(uint16_t pcpu_id)
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{
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return bitmap_test(pcpu_id, &pcpu_active_bitmap);
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}
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void set_pcpu_active(uint16_t pcpu_id)
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{
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bitmap_set(pcpu_id, &pcpu_active_bitmap);
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}
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void clear_pcpu_active(uint16_t pcpu_id)
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{
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bitmap_clear(pcpu_id, &pcpu_active_bitmap);
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}
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bool check_pcpus_active(uint64_t mask)
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{
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return ((pcpu_active_bitmap & mask) == mask);
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}
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bool check_pcpus_inactive(uint64_t mask)
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{
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return ((pcpu_active_bitmap & mask) != 0UL);
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}
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uint64_t get_active_pcpu_bitmap(void)
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{
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return pcpu_active_bitmap;
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}
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void pcpu_set_current_state(uint16_t pcpu_id, enum pcpu_boot_state state)
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{
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/* Check if state is initializing */
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if (state == PCPU_STATE_INITIALIZING) {
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/* Save this CPU's logical ID to arch specific per-cpu reg */
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set_current_pcpu_id(pcpu_id);
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}
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/* Set state for the specified CPU */
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per_cpu(boot_state, pcpu_id) = state;
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}
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/**
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* @brief Start all cpus if the bit is set in mask except itself
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*
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* @param[in] mask bits mask of cpus which should be started
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*
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* @return true if all cpus set in mask are started
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* @return false if there are any cpus set in mask aren't started
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*/
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bool start_pcpus(uint64_t mask)
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{
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uint16_t i;
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uint16_t pcpu_id = get_pcpu_id();
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uint64_t expected_start_mask = mask;
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uint32_t timeout;
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i = ffs64(expected_start_mask);
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while (i != INVALID_BIT_INDEX) {
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bitmap_clear_non_atomic(i, &expected_start_mask);
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if (pcpu_id == i) {
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continue; /* Avoid start itself */
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}
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arch_start_pcpu(i);
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/* Wait until the pcpu with pcpu_id is running and set
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* the active bitmap or configured time-out has expired
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*/
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timeout = CPU_UP_TIMEOUT * 1000U;
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while (!is_pcpu_active(i) && (timeout != 0U)) {
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/* Delay 10us */
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udelay(10U);
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/* Decrement timeout value */
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timeout -= 10U;
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}
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/* Check to see if expected CPU is actually up */
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if (!is_pcpu_active(i)) {
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pr_fatal("Secondary CPU%hu failed to come up", i);
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pcpu_set_current_state(i, PCPU_STATE_DEAD);
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}
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i = ffs64(expected_start_mask);
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}
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return check_pcpus_active(mask);
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}
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