xref: /openbmc/linux/arch/ia64/include/asm/acpi.h (revision 95c96174)
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_ASM_MACROS
56 #define BREAKPOINT3
57 #define ACPI_DISABLE_IRQS() local_irq_disable()
58 #define ACPI_ENABLE_IRQS()  local_irq_enable()
59 #define ACPI_FLUSH_CPU_CACHE()
60 
61 static inline int
62 ia64_acpi_acquire_global_lock (unsigned int *lock)
63 {
64 	unsigned int old, new, val;
65 	do {
66 		old = *lock;
67 		new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
68 		val = ia64_cmpxchg4_acq(lock, new, old);
69 	} while (unlikely (val != old));
70 	return (new < 3) ? -1 : 0;
71 }
72 
73 static inline int
74 ia64_acpi_release_global_lock (unsigned int *lock)
75 {
76 	unsigned int old, new, val;
77 	do {
78 		old = *lock;
79 		new = old & ~0x3;
80 		val = ia64_cmpxchg4_acq(lock, new, old);
81 	} while (unlikely (val != old));
82 	return old & 0x1;
83 }
84 
85 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq)				\
86 	((Acq) = ia64_acpi_acquire_global_lock(&facs->global_lock))
87 
88 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq)				\
89 	((Acq) = ia64_acpi_release_global_lock(&facs->global_lock))
90 
91 #ifdef	CONFIG_ACPI
92 #define acpi_disabled 0	/* ACPI always enabled on IA64 */
93 #define acpi_noirq 0	/* ACPI always enabled on IA64 */
94 #define acpi_pci_disabled 0 /* ACPI PCI always enabled on IA64 */
95 #define acpi_strict 1	/* no ACPI spec workarounds on IA64 */
96 #endif
97 #define acpi_processor_cstate_check(x) (x) /* no idle limits on IA64 :) */
98 static inline void disable_acpi(void) { }
99 static inline void pci_acpi_crs_quirks(void) { }
100 
101 #ifdef CONFIG_IA64_GENERIC
102 const char *acpi_get_sysname (void);
103 #else
104 static inline const char *acpi_get_sysname (void)
105 {
106 # if defined (CONFIG_IA64_HP_SIM)
107 	return "hpsim";
108 # elif defined (CONFIG_IA64_HP_ZX1)
109 	return "hpzx1";
110 # elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
111 	return "hpzx1_swiotlb";
112 # elif defined (CONFIG_IA64_SGI_SN2)
113 	return "sn2";
114 # elif defined (CONFIG_IA64_SGI_UV)
115 	return "uv";
116 # elif defined (CONFIG_IA64_DIG)
117 	return "dig";
118 # elif defined (CONFIG_IA64_XEN_GUEST)
119 	return "xen";
120 # elif defined(CONFIG_IA64_DIG_VTD)
121 	return "dig_vtd";
122 # else
123 #	error Unknown platform.  Fix acpi.c.
124 # endif
125 }
126 #endif
127 int acpi_request_vector (u32 int_type);
128 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
129 
130 /* Low-level suspend routine. */
131 extern int acpi_suspend_lowlevel(void);
132 
133 extern unsigned long acpi_wakeup_address;
134 
135 /*
136  * Record the cpei override flag and current logical cpu. This is
137  * useful for CPU removal.
138  */
139 extern unsigned int can_cpei_retarget(void);
140 extern unsigned int is_cpu_cpei_target(unsigned int cpu);
141 extern void set_cpei_target_cpu(unsigned int cpu);
142 extern unsigned int get_cpei_target_cpu(void);
143 extern void prefill_possible_map(void);
144 #ifdef CONFIG_ACPI_HOTPLUG_CPU
145 extern int additional_cpus;
146 #else
147 #define additional_cpus 0
148 #endif
149 
150 #ifdef CONFIG_ACPI_NUMA
151 #if MAX_NUMNODES > 256
152 #define MAX_PXM_DOMAINS MAX_NUMNODES
153 #else
154 #define MAX_PXM_DOMAINS (256)
155 #endif
156 extern int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
157 extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
158 #endif
159 
160 static inline bool arch_has_acpi_pdc(void) { return true; }
161 static inline void arch_acpi_set_pdc_bits(u32 *buf)
162 {
163 	buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;
164 }
165 
166 #define acpi_unlazy_tlb(x)
167 
168 #ifdef CONFIG_ACPI_NUMA
169 extern cpumask_t early_cpu_possible_map;
170 #define for_each_possible_early_cpu(cpu)  \
171 	for_each_cpu_mask((cpu), early_cpu_possible_map)
172 
173 static inline void per_cpu_scan_finalize(int min_cpus, int reserve_cpus)
174 {
175 	int low_cpu, high_cpu;
176 	int cpu;
177 	int next_nid = 0;
178 
179 	low_cpu = cpus_weight(early_cpu_possible_map);
180 
181 	high_cpu = max(low_cpu, min_cpus);
182 	high_cpu = min(high_cpu + reserve_cpus, NR_CPUS);
183 
184 	for (cpu = low_cpu; cpu < high_cpu; cpu++) {
185 		cpu_set(cpu, early_cpu_possible_map);
186 		if (node_cpuid[cpu].nid == NUMA_NO_NODE) {
187 			node_cpuid[cpu].nid = next_nid;
188 			next_nid++;
189 			if (next_nid >= num_online_nodes())
190 				next_nid = 0;
191 		}
192 	}
193 }
194 #endif /* CONFIG_ACPI_NUMA */
195 
196 #endif /*__KERNEL__*/
197 
198 #endif /*_ASM_ACPI_H*/
199