1/*
  2 *  Copyright (C) 1999 VA Linux Systems
  3 *  Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
  4 *  Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
  5 *  Copyright (C) 2001,2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
  6 *
  7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  8 *
  9 *  This program is free software; you can redistribute it and/or modify
 10 *  it under the terms of the GNU General Public License as published by
 11 *  the Free Software Foundation; either version 2 of the License, or
 12 *  (at your option) any later version.
 13 *
 14 *  This program is distributed in the hope that it will be useful,
 15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17 *  GNU General Public License for more details.
 18 *
 19 *  You should have received a copy of the GNU General Public License
 20 *  along with this program; if not, write to the Free Software
 21 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 22 *
 23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 24 */
 25
 26#ifndef _ASM_ACPI_H
 27#define _ASM_ACPI_H
 28
 29#ifdef __KERNEL__
 30
 31#include <acpi/pdc_intel.h>
 32
 33#include <linux/init.h>
 34#include <linux/numa.h>
 35#include <asm/numa.h>
 36
 37#define COMPILER_DEPENDENT_INT64	long
 38#define COMPILER_DEPENDENT_UINT64	unsigned long
 39
 40/*
 41 * Calling conventions:
 42 *
 43 * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
 44 * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
 45 * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
 46 * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
 47 */
 48#define ACPI_SYSTEM_XFACE
 49#define ACPI_EXTERNAL_XFACE
 50#define ACPI_INTERNAL_XFACE
 51#define ACPI_INTERNAL_VAR_XFACE
 52
 53/* Asm macros */
 54
 55#define ACPI_FLUSH_CPU_CACHE()
 56
 57static inline int
 58ia64_acpi_acquire_global_lock (unsigned int *lock)
 59{
 60	unsigned int old, new, val;
 61	do {
 62		old = *lock;
 63		new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
 64		val = ia64_cmpxchg4_acq(lock, new, old);
 65	} while (unlikely (val != old));
 66	return (new < 3) ? -1 : 0;
 67}
 68
 69static inline int
 70ia64_acpi_release_global_lock (unsigned int *lock)
 71{
 72	unsigned int old, new, val;
 73	do {
 74		old = *lock;
 75		new = old & ~0x3;
 76		val = ia64_cmpxchg4_acq(lock, new, old);
 77	} while (unlikely (val != old));
 78	return old & 0x1;
 79}
 80
 81#define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq)				\
 82	((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock))
 83
 84#define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq)				\
 85	((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
 86
 87#ifdef	CONFIG_ACPI
 88#define acpi_disabled 0	/* ACPI always enabled on IA64 */
 89#define acpi_noirq 0	/* ACPI always enabled on IA64 */
 90#define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
 91#define acpi_strict 1	/* no ACPI spec workarounds on IA64 */
 92#endif
 93#define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
 94static inline void disable_acpi(void) { }
 95static inline void pci_acpi_crs_quirks(void) { }
 96
 97#ifdef CONFIG_IA64_GENERIC
 98const char *acpi_get_sysname (void);
 99#else
100static inline const char *acpi_get_sysname (void)
101{
102# if defined (CONFIG_IA64_HP_SIM)
103	return "hpsim";
104# elif defined (CONFIG_IA64_HP_ZX1)
105	return "hpzx1";
106# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
107	return "hpzx1_swiotlb";
108# elif defined (CONFIG_IA64_SGI_SN2)
109	return "sn2";
110# elif defined (CONFIG_IA64_SGI_UV)
111	return "uv";
112# elif defined (CONFIG_IA64_DIG)
113	return "dig";
114# elif defined(CONFIG_IA64_DIG_VTD)
115	return "dig_vtd";
116# else
117#	error Unknown platform.  Fix acpi.c.
118# endif
119}
120#endif
121int acpi_request_vector (u32 int_type);
122int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
123
124/* Low-level suspend routine. */
125extern int acpi_suspend_lowlevel(void);
126
127extern unsigned long acpi_wakeup_address;
128
129/*
130 * Record the cpei override flag and current logical cpu. This is
131 * useful for CPU removal.
132 */
133extern unsigned int can_cpei_retarget(void);
134extern unsigned int is_cpu_cpei_target(unsigned int cpu);
135extern void set_cpei_target_cpu(unsigned int cpu);
136extern unsigned int get_cpei_target_cpu(void);
137extern void prefill_possible_map(void);
138#ifdef CONFIG_ACPI_HOTPLUG_CPU
139extern int additional_cpus;
140#else
141#define additional_cpus 0
142#endif
143
144#ifdef CONFIG_ACPI_NUMA
145#if MAX_NUMNODES > 256
146#define MAX_PXM_DOMAINS MAX_NUMNODES
147#else
148#define MAX_PXM_DOMAINS (256)
149#endif
150extern int pxm_to_nid_map[MAX_PXM_DOMAINS];
151extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
152#endif
153
154static inline bool arch_has_acpi_pdc(void) { return true; }
155static inline void arch_acpi_set_pdc_bits(u32 *buf)
156{
157	buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
158}
159
160#define acpi_unlazy_tlb(x)
161
162#ifdef CONFIG_ACPI_NUMA
163extern cpumask_t early_cpu_possible_map;
164#define for_each_possible_early_cpu(cpu)  \
165	for_each_cpu_mask((cpu), early_cpu_possible_map)
166
167static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus)
168{
169	int low_cpu, high_cpu;
170	int cpu;
171	int next_nid = 0;
172
173	low_cpu = cpus_weight(early_cpu_possible_map);
174
175	high_cpu = max(low_cpu, min_cpus);
176	high_cpu = min(high_cpu + reserve_cpus, NR_CPUS);
177
178	for (cpu = low_cpu; cpu < high_cpu; cpu++) {
179		cpu_set(cpu, early_cpu_possible_map);
180		if (node_cpuid[cpu].nid == NUMA_NO_NODE) {
181			node_cpuid[cpu].nid = next_nid;
182			next_nid++;
183			if (next_nid >= num_online_nodes())
184				next_nid = 0;
185		}
186	}
187}
188#endif /* CONFIG_ACPI_NUMA */
189
190#endif /*__KERNEL__*/
191
192#endif /*_ASM_ACPI_H*/