[mirror_ubuntu-bionic-kernel.git] / arch / x86 / include / asm / acpi.h

#ifndef _ASM_X86_ACPI_H
#define _ASM_X86_ACPI_H

/*
 *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
 *  Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
#include <acpi/pdc_intel.h>

#include <asm/numa.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/mpspec.h>
#include <asm/realmode.h>

#define COMPILER_DEPENDENT_INT64   long long
#define COMPILER_DEPENDENT_UINT64  unsigned long long

/*
 * Calling conventions:
 *
 * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
 * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
 * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
 * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
 */
#define ACPI_SYSTEM_XFACE
#define ACPI_EXTERNAL_XFACE
#define ACPI_INTERNAL_XFACE
#define ACPI_INTERNAL_VAR_XFACE

/* Asm macros */

#define ACPI_FLUSH_CPU_CACHE()	wbinvd()

int __acpi_acquire_global_lock(unsigned int *lock);
int __acpi_release_global_lock(unsigned int *lock);

#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
	((Acq) = __acpi_acquire_global_lock(&facs->global_lock))

#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
	((Acq) = __acpi_release_global_lock(&facs->global_lock))

/*
 * Math helper asm macros
 */
#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
	asm("divl %2;"				     \
	    : "=a"(q32), "=d"(r32)		     \
	    : "r"(d32),				     \
	     "0"(n_lo), "1"(n_hi))


#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
	asm("shrl   $1,%2	;"	\
	    "rcrl   $1,%3;"		\
	    : "=r"(n_hi), "=r"(n_lo)	\
	    : "0"(n_hi), "1"(n_lo))

#ifdef CONFIG_ACPI
extern int acpi_lapic;
extern int acpi_ioapic;
extern int acpi_noirq;
extern int acpi_strict;
extern int acpi_disabled;
extern int acpi_pci_disabled;
extern int acpi_skip_timer_override;
extern int acpi_use_timer_override;
extern int acpi_fix_pin2_polarity;

extern u8 acpi_sci_flags;
extern int acpi_sci_override_gsi;
void acpi_pic_sci_set_trigger(unsigned int, u16);

extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
				  int trigger, int polarity);

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

extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);

static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
static inline void acpi_disable_pci(void)
{
	acpi_pci_disabled = 1;
	acpi_noirq_set();
}

/* Low-level suspend routine. */
extern int acpi_suspend_lowlevel(void);

/* Physical address to resume after wakeup */
#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))

/*
 * Check if the CPU can handle C2 and deeper
 */
static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
{
	/*
	 * Early models (<=5) of AMD Opterons are not supposed to go into
	 * C2 state.
	 *
	 * Steppings 0x0A and later are good
	 */
	if (boot_cpu_data.x86 == 0x0F &&
	    boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
	    boot_cpu_data.x86_model <= 0x05 &&
	    boot_cpu_data.x86_mask < 0x0A)
		return 1;
	else if (amd_e400_c1e_detected)
		return 1;
	else
		return max_cstate;
}

static inline bool arch_has_acpi_pdc(void)
{
	struct cpuinfo_x86 *c = &cpu_data(0);
	return (c->x86_vendor == X86_VENDOR_INTEL ||
		c->x86_vendor == X86_VENDOR_CENTAUR);
}

static inline void arch_acpi_set_pdc_bits(u32 *buf)
{
	struct cpuinfo_x86 *c = &cpu_data(0);

	buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;

	if (cpu_has(c, X86_FEATURE_EST))
		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;

	if (cpu_has(c, X86_FEATURE_ACPI))
		buf[2] |= ACPI_PDC_T_FFH;

	/*
	 * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
	 */
	if (!cpu_has(c, X86_FEATURE_MWAIT))
		buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
}

#else /* !CONFIG_ACPI */

#define acpi_lapic 0
#define acpi_ioapic 0
static inline void acpi_noirq_set(void) { }
static inline void acpi_disable_pci(void) { }
static inline void disable_acpi(void) { }

#endif /* !CONFIG_ACPI */

#define ARCH_HAS_POWER_INIT	1

#ifdef CONFIG_ACPI_NUMA
extern int acpi_numa;
extern int x86_acpi_numa_init(void);
#endif /* CONFIG_ACPI_NUMA */

#define acpi_unlazy_tlb(x)	leave_mm(x)

#endif /* _ASM_X86_ACPI_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_ACPI_H
1965aae3 PA	2	#define _ASM_X86_ACPI_H
c1c30634	3
0b80fc72 TG	4	/*
	5	* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
	6	* Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
	7	*
	8	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*
	24	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	25	*/
	26	#include <acpi/pdc_intel.h>
c1c30634	27
0b80fc72	28	#include <asm/numa.h>
c1c30634	29	#include <asm/processor.h>
bde6f5f5	30	#include <asm/mmu.h>
4c1cbafb	31	#include <asm/mpspec.h>
319b6ffc	32	#include <asm/realmode.h>
c1c30634	33
0b80fc72 TG	34	#define COMPILER_DEPENDENT_INT64 long long
	35	#define COMPILER_DEPENDENT_UINT64 unsigned long long
	36
	37	/*
	38	* Calling conventions:
	39	*
	40	* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
	41	* ACPI_EXTERNAL_XFACE - External ACPI interfaces
	42	* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
	43	* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
	44	*/
	45	#define ACPI_SYSTEM_XFACE
	46	#define ACPI_EXTERNAL_XFACE
	47	#define ACPI_INTERNAL_XFACE
	48	#define ACPI_INTERNAL_VAR_XFACE
	49
	50	/* Asm macros */
	51
0b80fc72 TG	52	#define ACPI_FLUSH_CPU_CACHE() wbinvd()
	53
	54	int __acpi_acquire_global_lock(unsigned int *lock);
	55	int __acpi_release_global_lock(unsigned int *lock);
	56
	57	#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
	58	((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
	59
	60	#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
	61	((Acq) = __acpi_release_global_lock(&facs->global_lock))
	62
	63	/*
	64	* Math helper asm macros
	65	*/
	66	#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
	67	asm("divl %2;" \
8dbeeb24 JP	68	: "=a"(q32), "=d"(r32) \
8dbeeb24 JP	69	: "r"(d32), \
0b80fc72 TG	70	"0"(n_lo), "1"(n_hi))
	71
	72
	73	#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
	74	asm("shrl $1,%2 ;" \
	75	"rcrl $1,%3;" \
8dbeeb24 JP	76	: "=r"(n_hi), "=r"(n_lo) \
8dbeeb24 JP	77	: "0"(n_hi), "1"(n_lo))
0b80fc72 TG	78
	79	#ifdef CONFIG_ACPI
	80	extern int acpi_lapic;
	81	extern int acpi_ioapic;
	82	extern int acpi_noirq;
	83	extern int acpi_strict;
	84	extern int acpi_disabled;
0b80fc72 TG	85	extern int acpi_pci_disabled;
	86	extern int acpi_skip_timer_override;
	87	extern int acpi_use_timer_override;
7f74f8f2	88	extern int acpi_fix_pin2_polarity;
0b80fc72	89
6697c052 HH	90	extern u8 acpi_sci_flags;
	91	extern int acpi_sci_override_gsi;
	92	void acpi_pic_sci_set_trigger(unsigned int, u16);
	93
90f6881e JF	94	extern int (__acpi_register_gsi)(struct device dev, u32 gsi,
	95	int trigger, int polarity);
	96
0b80fc72 TG	97	static inline void disable_acpi(void)
	98	{
	99	acpi_disabled = 1;
0b80fc72 TG	100	acpi_pci_disabled = 1;
	101	acpi_noirq = 1;
	102	}
	103
0b80fc72 TG	104	extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
	105
	106	static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
	107	static inline void acpi_disable_pci(void)
	108	{
	109	acpi_pci_disabled = 1;
	110	acpi_noirq_set();
	111	}
0b80fc72	112
f1a2003e RW	113	/* Low-level suspend routine. */
f1a2003e RW	114	extern int acpi_suspend_lowlevel(void);
0b80fc72	115
319b6ffc PA	116	/* Physical address to resume after wakeup */
319b6ffc PA	117	#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
0b80fc72	118
c1c30634 AS	119	/*
	120	* Check if the CPU can handle C2 and deeper
	121	*/
	122	static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
	123	{
	124	/*
	125	* Early models (<=5) of AMD Opterons are not supposed to go into
	126	* C2 state.
	127	*
	128	* Steppings 0x0A and later are good
	129	*/
	130	if (boot_cpu_data.x86 == 0x0F &&
	131	boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
	132	boot_cpu_data.x86_model <= 0x05 &&
	133	boot_cpu_data.x86_mask < 0x0A)
	134	return 1;
02c68a02	135	else if (amd_e400_c1e_detected)
a8d68290	136	return 1;
c1c30634 AS	137	else
	138	return max_cstate;
	139	}
	140
1d9cb470 AC	141	static inline bool arch_has_acpi_pdc(void)
	142	{
	143	struct cpuinfo_x86 *c = &cpu_data(0);
	144	return (c->x86_vendor == X86_VENDOR_INTEL \|\|
	145	c->x86_vendor == X86_VENDOR_CENTAUR);
	146	}
	147
6c5807d7 AC	148	static inline void arch_acpi_set_pdc_bits(u32 *buf)
	149	{
	150	struct cpuinfo_x86 *c = &cpu_data(0);
	151
	152	buf[2] \|= ACPI_PDC_C_CAPABILITY_SMP;
	153
	154	if (cpu_has(c, X86_FEATURE_EST))
	155	buf[2] \|= ACPI_PDC_EST_CAPABILITY_SWSMP;
	156
	157	if (cpu_has(c, X86_FEATURE_ACPI))
	158	buf[2] \|= ACPI_PDC_T_FFH;
	159
	160	/*
	161	* If mwait/monitor is unsupported, C2/C3_FFH will be disabled
	162	*/
	163	if (!cpu_has(c, X86_FEATURE_MWAIT))
	164	buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
	165	}
	166
0b80fc72 TG	167	#else /* !CONFIG_ACPI */
	168
	169	#define acpi_lapic 0
	170	#define acpi_ioapic 0
	171	static inline void acpi_noirq_set(void) { }
	172	static inline void acpi_disable_pci(void) { }
	173	static inline void disable_acpi(void) { }
	174
	175	#endif /* !CONFIG_ACPI */
	176
	177	#define ARCH_HAS_POWER_INIT 1
	178
0b80fc72 TG	179	#ifdef CONFIG_ACPI_NUMA
0b80fc72 TG	180	extern int acpi_numa;
a9aec56a	181	extern int x86_acpi_numa_init(void);
4e76f4e6	182	#endif /* CONFIG_ACPI_NUMA */
0b80fc72	183
bde6f5f5 VP	184	#define acpi_unlazy_tlb(x) leave_mm(x)
bde6f5f5 VP	185
1965aae3	186	#endif /* _ASM_X86_ACPI_H */