[deliverable/linux.git] / arch / arm64 / include / asm / acpi.h

/*
 *  Copyright (C) 2013-2014, Linaro Ltd.
 *	Author: Al Stone <al.stone@linaro.org>
 *	Author: Graeme Gregory <graeme.gregory@linaro.org>
 *	Author: Hanjun Guo <hanjun.guo@linaro.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation;
 */

#ifndef _ASM_ACPI_H
#define _ASM_ACPI_H

#include <linux/memblock.h>
#include <linux/psci.h>

#include <asm/cputype.h>
#include <asm/smp_plat.h>

/* Macros for consistency checks of the GICC subtable of MADT */
#define ACPI_MADT_GICC_LENGTH	\
	(acpi_gbl_FADT.header.revision < 6 ? 76 : 80)

#define BAD_MADT_GICC_ENTRY(entry, end)						\
	(!(entry) || (unsigned long)(entry) + sizeof(*(entry)) > (end) ||	\
	 (entry)->header.length != ACPI_MADT_GICC_LENGTH)

/* Basic configuration for ACPI */
#ifdef	CONFIG_ACPI
/* ACPI table mapping after acpi_gbl_permanent_mmap is set */
static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
					    acpi_size size)
{
	/*
	 * EFI's reserve_regions() call adds memory with the WB attribute
	 * to memblock via early_init_dt_add_memory_arch().
	 */
	if (!memblock_is_memory(phys))
		return ioremap(phys, size);

	return ioremap_cache(phys, size);
}
#define acpi_os_ioremap acpi_os_ioremap

typedef u64 phys_cpuid_t;
#define PHYS_CPUID_INVALID INVALID_HWID

#define acpi_strict 1	/* No out-of-spec workarounds on ARM64 */
extern int acpi_disabled;
extern int acpi_noirq;
extern int acpi_pci_disabled;

static inline void disable_acpi(void)
{
	acpi_disabled = 1;
	acpi_pci_disabled = 1;
	acpi_noirq = 1;
}

static inline void enable_acpi(void)
{
	acpi_disabled = 0;
	acpi_pci_disabled = 0;
	acpi_noirq = 0;
}

/*
 * The ACPI processor driver for ACPI core code needs this macro
 * to find out this cpu was already mapped (mapping from CPU hardware
 * ID to CPU logical ID) or not.
 */
#define cpu_physical_id(cpu) cpu_logical_map(cpu)

/*
 * It's used from ACPI core in kdump to boot UP system with SMP kernel,
 * with this check the ACPI core will not override the CPU index
 * obtained from GICC with 0 and not print some error message as well.
 * Since MADT must provide at least one GICC structure for GIC
 * initialization, CPU will be always available in MADT on ARM64.
 */
static inline bool acpi_has_cpu_in_madt(void)
{
	return true;
}

static inline void arch_fix_phys_package_id(int num, u32 slot) { }
void __init acpi_init_cpus(void);

#else
static inline void acpi_init_cpus(void) { }
#endif /* CONFIG_ACPI */

#ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL
bool acpi_parking_protocol_valid(int cpu);
void __init
acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor);
#else
static inline bool acpi_parking_protocol_valid(int cpu) { return false; }
static inline void
acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor)
{}
#endif

static inline const char *acpi_get_enable_method(int cpu)
{
	if (acpi_psci_present())
		return "psci";

	if (acpi_parking_protocol_valid(cpu))
		return "parking-protocol";

	return NULL;
}

#ifdef	CONFIG_ACPI_APEI
pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr);
#endif

#ifdef CONFIG_ACPI_NUMA
int arm64_acpi_numa_init(void);
int acpi_numa_get_nid(unsigned int cpu, u64 hwid);
#else
static inline int arm64_acpi_numa_init(void) { return -ENOSYS; }
static inline int acpi_numa_get_nid(unsigned int cpu, u64 hwid) { return NUMA_NO_NODE; }
#endif /* CONFIG_ACPI_NUMA */

#define ACPI_TABLE_UPGRADE_MAX_PHYS MEMBLOCK_ALLOC_ACCESSIBLE

#endif /*_ASM_ACPI_H*/
Commit	Line	Data
37655163 AS	1	/*
	2	* Copyright (C) 2013-2014, Linaro Ltd.
	3	* Author: Al Stone <al.stone@linaro.org>
	4	* Author: Graeme Gregory <graeme.gregory@linaro.org>
	5	* Author: Hanjun Guo <hanjun.guo@linaro.org>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation;
	10	*/
	11
	12	#ifndef _ASM_ACPI_H
	13	#define _ASM_ACPI_H
	14
e7cd1903	15	#include <linux/memblock.h>
bff60792	16	#include <linux/psci.h>
d60fc389	17
020295b4 HG	18	#include <asm/cputype.h>
020295b4 HG	19	#include <asm/smp_plat.h>
652261a7	20
b6cfb277 AS	21	/* Macros for consistency checks of the GICC subtable of MADT */
	22	#define ACPI_MADT_GICC_LENGTH \
	23	(acpi_gbl_FADT.header.revision < 6 ? 76 : 80)
	24
	25	#define BAD_MADT_GICC_ENTRY(entry, end) \
	26	(!(entry) \|\| (unsigned long)(entry) + sizeof(*(entry)) > (end) \|\| \
	27	(entry)->header.length != ACPI_MADT_GICC_LENGTH)
	28
37655163 AS	29	/* Basic configuration for ACPI */
37655163 AS	30	#ifdef CONFIG_ACPI
652261a7 MS	31	/* ACPI table mapping after acpi_gbl_permanent_mmap is set */
	32	static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
	33	acpi_size size)
	34	{
e7cd1903 AT	35	/*
	36	* EFI's reserve_regions() call adds memory with the WB attribute
	37	* to memblock via early_init_dt_add_memory_arch().
	38	*/
	39	if (!memblock_is_memory(phys))
652261a7 MS	40	return ioremap(phys, size);
	41
	42	return ioremap_cache(phys, size);
	43	}
	44	#define acpi_os_ioremap acpi_os_ioremap
	45
020295b4 HG	46	typedef u64 phys_cpuid_t;
	47	#define PHYS_CPUID_INVALID INVALID_HWID
	48
37655163 AS	49	#define acpi_strict 1 /* No out-of-spec workarounds on ARM64 */
	50	extern int acpi_disabled;
	51	extern int acpi_noirq;
	52	extern int acpi_pci_disabled;
	53
	54	static inline void disable_acpi(void)
	55	{
	56	acpi_disabled = 1;
	57	acpi_pci_disabled = 1;
	58	acpi_noirq = 1;
	59	}
	60
b10d79f7 AS	61	static inline void enable_acpi(void)
	62	{
	63	acpi_disabled = 0;
	64	acpi_pci_disabled = 0;
	65	acpi_noirq = 0;
	66	}
	67
020295b4 HG	68	/*
	69	* The ACPI processor driver for ACPI core code needs this macro
	70	* to find out this cpu was already mapped (mapping from CPU hardware
	71	* ID to CPU logical ID) or not.
	72	*/
	73	#define cpu_physical_id(cpu) cpu_logical_map(cpu)
	74
37655163 AS	75	/*
	76	* It's used from ACPI core in kdump to boot UP system with SMP kernel,
	77	* with this check the ACPI core will not override the CPU index
	78	* obtained from GICC with 0 and not print some error message as well.
	79	* Since MADT must provide at least one GICC structure for GIC
	80	* initialization, CPU will be always available in MADT on ARM64.
	81	*/
	82	static inline bool acpi_has_cpu_in_madt(void)
	83	{
	84	return true;
	85	}
	86
	87	static inline void arch_fix_phys_package_id(int num, u32 slot) { }
fccb9a81	88	void __init acpi_init_cpus(void);
37655163	89
7c59a3df	90	#else
fccb9a81	91	static inline void acpi_init_cpus(void) { }
37655163 AS	92	#endif /* CONFIG_ACPI */
37655163 AS	93
5e89c55e LP	94	#ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL
	95	bool acpi_parking_protocol_valid(int cpu);
	96	void __init
	97	acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor);
	98	#else
	99	static inline bool acpi_parking_protocol_valid(int cpu) { return false; }
	100	static inline void
	101	acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor)
	102	{}
	103	#endif
	104
0f078336 LP	105	static inline const char *acpi_get_enable_method(int cpu)
0f078336 LP	106	{
5e89c55e LP	107	if (acpi_psci_present())
	108	return "psci";
	109
	110	if (acpi_parking_protocol_valid(cpu))
	111	return "parking-protocol";
	112
	113	return NULL;
0f078336	114	}
89e44b51 JZZ	115
	116	#ifdef CONFIG_ACPI_APEI
	117	pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr);
	118	#endif
	119
d8b47fca HG	120	#ifdef CONFIG_ACPI_NUMA
	121	int arm64_acpi_numa_init(void);
	122	int acpi_numa_get_nid(unsigned int cpu, u64 hwid);
	123	#else
	124	static inline int arm64_acpi_numa_init(void) { return -ENOSYS; }
	125	static inline int acpi_numa_get_nid(unsigned int cpu, u64 hwid) { return NUMA_NO_NODE; }
	126	#endif /* CONFIG_ACPI_NUMA */
	127
38b04a74 JM	128	#define ACPI_TABLE_UPGRADE_MAX_PHYS MEMBLOCK_ALLOC_ACCESSIBLE
38b04a74 JM	129
37655163	130	#endif /_ASM_ACPI_H/