mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
9559d58063
Increase max supported CPUs up to 2048, including:
1. Increase CSR.CPUID register's effective width;
2. Define MAX_CORE_PIC (a.k.a. max physical ID) to 2048;
3. Allow NR_CPUS (a.k.a. max logical ID) to be as large as 2048;
4. Introduce acpi_numa_x2apic_affinity_init() to handle ACPI SRAT
for CPUID >= 256.
Note: The reason of increasing to 2048 rather than 4096/8192 is because
the IPI hardware can only support 2048 as a maximum.
Reviewed-by: Yanteng Si <si.yanteng@linux.dev>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Author: Jianmin Lv <lvjianmin@loongson.cn>
|
|
* Huacai Chen <chenhuacai@loongson.cn>
|
|
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
|
|
*/
|
|
|
|
#ifndef _ASM_LOONGARCH_ACPI_H
|
|
#define _ASM_LOONGARCH_ACPI_H
|
|
|
|
#include <asm/smp.h>
|
|
#include <asm/suspend.h>
|
|
|
|
#ifdef CONFIG_ACPI
|
|
extern int acpi_strict;
|
|
extern int acpi_disabled;
|
|
extern int acpi_pci_disabled;
|
|
extern int acpi_noirq;
|
|
extern int pptt_enabled;
|
|
|
|
#define acpi_os_ioremap acpi_os_ioremap
|
|
void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
|
|
|
|
static inline void disable_acpi(void)
|
|
{
|
|
acpi_disabled = 1;
|
|
acpi_pci_disabled = 1;
|
|
acpi_noirq = 1;
|
|
}
|
|
|
|
static inline bool acpi_has_cpu_in_madt(void)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
#define MAX_CORE_PIC 2048
|
|
|
|
extern struct list_head acpi_wakeup_device_list;
|
|
extern struct acpi_madt_core_pic acpi_core_pic[MAX_CORE_PIC];
|
|
|
|
extern int __init parse_acpi_topology(void);
|
|
|
|
static inline u32 get_acpi_id_for_cpu(unsigned int cpu)
|
|
{
|
|
return acpi_core_pic[cpu_logical_map(cpu)].processor_id;
|
|
}
|
|
|
|
#endif /* !CONFIG_ACPI */
|
|
|
|
#define ACPI_TABLE_UPGRADE_MAX_PHYS ARCH_LOW_ADDRESS_LIMIT
|
|
|
|
extern int loongarch_acpi_suspend(void);
|
|
extern int (*acpi_suspend_lowlevel)(void);
|
|
|
|
static inline unsigned long acpi_get_wakeup_address(void)
|
|
{
|
|
#ifdef CONFIG_SUSPEND
|
|
return (unsigned long)loongarch_wakeup_start;
|
|
#endif
|
|
return 0UL;
|
|
}
|
|
|
|
#endif /* _ASM_LOONGARCH_ACPI_H */
|