1 /******************************************************************************
3 * Name: aclinux.h - OS specific defines, etc. for Linux
5 *****************************************************************************/
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47 /* Common (in-kernel/user-space) ACPICA configuration */
49 #define ACPI_USE_SYSTEM_CLIBRARY
50 #define ACPI_USE_DO_WHILE_0
51 #define ACPI_MUTEX_TYPE ACPI_BINARY_SEMAPHORE
55 #include <linux/string.h>
56 #include <linux/kernel.h>
57 #include <linux/ctype.h>
58 #include <linux/sched.h>
59 #include <linux/atomic.h>
60 #include <linux/math64.h>
61 #include <linux/slab.h>
62 #include <linux/spinlock_types.h>
63 #ifdef EXPORT_ACPI_INTERFACES
64 #include <linux/export.h>
68 /* Host-dependent types and defines for in-kernel ACPICA */
70 #define ACPI_MACHINE_WIDTH BITS_PER_LONG
71 #define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol);
72 #define strtoul simple_strtoul
74 #define acpi_cache_t struct kmem_cache
75 #define acpi_spinlock spinlock_t *
76 #define acpi_cpu_flags unsigned long
78 #else /* !__KERNEL__ */
86 /* Host-dependent types and defines for user-space ACPICA */
88 #define ACPI_FLUSH_CPU_CACHE()
89 #define ACPI_CAST_PTHREAD_T(pthread) ((acpi_thread_id) (pthread))
91 #if defined(__ia64__) || defined(__x86_64__) || defined(__aarch64__)
92 #define ACPI_MACHINE_WIDTH 64
93 #define COMPILER_DEPENDENT_INT64 long
94 #define COMPILER_DEPENDENT_UINT64 unsigned long
96 #define ACPI_MACHINE_WIDTH 32
97 #define COMPILER_DEPENDENT_INT64 long long
98 #define COMPILER_DEPENDENT_UINT64 unsigned long long
99 #define ACPI_USE_NATIVE_DIVIDE
106 #endif /* __KERNEL__ */
110 #include <acpi/platform/acgcc.h>
115 * FIXME: Inclusion of actypes.h
116 * Linux kernel need this before defining inline OSL interfaces as
117 * actypes.h need to be included to find ACPICA type definitions.
118 * Since from ACPICA's perspective, the actypes.h should be included after
119 * acenv.h (aclinux.h), this leads to a inclusion mis-ordering issue.
121 #include <acpi/actypes.h>
124 * Overrides for in-kernel ACPICA
126 acpi_status __init acpi_os_initialize(void);
127 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize
129 acpi_status acpi_os_terminate(void);
130 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate
133 * Memory allocation/deallocation
137 * The irqs_disabled() check is for resume from RAM.
138 * Interrupts are off during resume, just like they are for boot.
139 * However, boot has (system_state != SYSTEM_RUNNING)
140 * to quiet __might_sleep() in kmalloc() and resume does not.
142 static inline void *acpi_os_allocate(acpi_size size)
144 return kmalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
147 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate
149 /* Use native linux version of acpi_os_allocate_zeroed */
151 static inline void *acpi_os_allocate_zeroed(acpi_size size)
153 return kzalloc(size, irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
156 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed
157 #define USE_NATIVE_ALLOCATE_ZEROED
159 static inline void acpi_os_free(void *memory)
164 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free
166 static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
168 return kmem_cache_zalloc(cache,
169 irqs_disabled()? GFP_ATOMIC : GFP_KERNEL);
172 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
174 static inline acpi_thread_id acpi_os_get_thread_id(void)
176 return (acpi_thread_id) (unsigned long)current;
179 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
181 #ifndef CONFIG_PREEMPT
184 * Used within ACPICA to show where it is safe to preempt execution
185 * when CONFIG_PREEMPT=n
187 #define ACPI_PREEMPTION_POINT() \
189 if (!irqs_disabled()) \
196 * When lockdep is enabled, the spin_lock_init() macro stringifies it's
197 * argument and uses that as a name for the lock in debugging.
198 * By executing spin_lock_init() in a macro the key changes from "lock" for
199 * all locks to the name of the argument of acpi_os_create_lock(), which
200 * prevents lockdep from reporting false positives for ACPICA locks.
202 #define acpi_os_create_lock(__handle) \
204 spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \
206 *(__handle) = lock; \
207 spin_lock_init(*(__handle)); \
209 lock ? AE_OK : AE_NO_MEMORY; \
211 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
213 void __iomem *acpi_os_map_memory(acpi_physical_address where, acpi_size length);
214 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory
216 void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size);
217 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory
220 * OSL interfaces used by debugger/disassembler
222 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable
223 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable
226 * OSL interfaces used by utilities
228 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output
229 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line
230 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name
231 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index
232 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address
233 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory
234 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename
235 #define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory
238 * OSL interfaces added by Linux
240 void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size);
242 #endif /* __KERNEL__ */
244 #endif /* __ACLINUX_H__ */