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1/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2/******************************************************************************
3 *
4 * Name: acconfig.h - Global configuration constants
5 *
6 * Copyright (C) 2000 - 2023, Intel Corp.
7 *
8 *****************************************************************************/
9
10#ifndef _ACCONFIG_H
11#define _ACCONFIG_H
12
13/******************************************************************************
14 *
15 * Configuration options
16 *
17 *****************************************************************************/
18
19/*
20 * ACPI_DEBUG_OUTPUT - This switch enables all the debug facilities of the
21 * ACPI subsystem. This includes the DEBUG_PRINT output
22 * statements. When disabled, all DEBUG_PRINT
23 * statements are compiled out.
24 *
25 * ACPI_APPLICATION - Use this switch if the subsystem is going to be run
26 * at the application level.
27 *
28 */
29
30/*
31 * OS name, used for the _OS object. The _OS object is essentially obsolete,
32 * but there is a large base of ASL/AML code in existing machines that check
33 * for the string below. The use of this string usually guarantees that
34 * the ASL will execute down the most tested code path. Also, there is some
35 * code that will not execute the _OSI method unless _OS matches the string
36 * below. Therefore, change this string at your own risk.
37 */
38#define ACPI_OS_NAME "Microsoft Windows NT"
39
40/* Maximum objects in the various object caches */
41
42#define ACPI_MAX_STATE_CACHE_DEPTH 96 /* State objects */
43#define ACPI_MAX_PARSE_CACHE_DEPTH 96 /* Parse tree objects */
44#define ACPI_MAX_EXTPARSE_CACHE_DEPTH 96 /* Parse tree objects */
45#define ACPI_MAX_OBJECT_CACHE_DEPTH 96 /* Interpreter operand objects */
46#define ACPI_MAX_NAMESPACE_CACHE_DEPTH 96 /* Namespace objects */
47#define ACPI_MAX_COMMENT_CACHE_DEPTH 96 /* Comments for the -ca option */
48
49/*
50 * Should the subsystem abort the loading of an ACPI table if the
51 * table checksum is incorrect?
52 */
53#ifndef ACPI_CHECKSUM_ABORT
54#define ACPI_CHECKSUM_ABORT FALSE
55#endif
56
57/*
58 * Generate a version of ACPICA that only supports "reduced hardware"
59 * platforms (as defined in ACPI 5.0). Set to TRUE to generate a specialized
60 * version of ACPICA that ONLY supports the ACPI 5.0 "reduced hardware"
61 * model. In other words, no ACPI hardware is supported.
62 *
63 * If TRUE, this means no support for the following:
64 * PM Event and Control registers
65 * SCI interrupt (and handler)
66 * Fixed Events
67 * General Purpose Events (GPEs)
68 * Global Lock
69 * ACPI PM timer
70 * FACS table (Waking vectors and Global Lock)
71 */
72#ifndef ACPI_REDUCED_HARDWARE
73#define ACPI_REDUCED_HARDWARE FALSE
74#endif
75
76/******************************************************************************
77 *
78 * Subsystem Constants
79 *
80 *****************************************************************************/
81
82/* Version of ACPI supported */
83
84#define ACPI_CA_SUPPORT_LEVEL 5
85
86/* Maximum count for a semaphore object */
87
88#define ACPI_MAX_SEMAPHORE_COUNT 256
89
90/* Maximum object reference count (detects object deletion issues) */
91
92#define ACPI_MAX_REFERENCE_COUNT 0x4000
93
94/* Default page size for use in mapping memory for operation regions */
95
96#define ACPI_DEFAULT_PAGE_SIZE 4096 /* Must be power of 2 */
97
98/* owner_id tracking. 128 entries allows for 4095 owner_ids */
99
100#define ACPI_NUM_OWNERID_MASKS 128
101
102/* Size of the root table array is increased by this increment */
103
104#define ACPI_ROOT_TABLE_SIZE_INCREMENT 4
105
106/* Maximum sleep allowed via Sleep() operator */
107
108#define ACPI_MAX_SLEEP 2000 /* 2000 millisec == two seconds */
109
110/* Address Range lists are per-space_id (Memory and I/O only) */
111
112#define ACPI_ADDRESS_RANGE_MAX 2
113
114/* Maximum time (default 30s) of While() loops before abort */
115
116#define ACPI_MAX_LOOP_TIMEOUT 30
117
118/******************************************************************************
119 *
120 * ACPI Specification constants (Do not change unless the specification changes)
121 *
122 *****************************************************************************/
123
124/* Method info (in WALK_STATE), containing local variables and arguments */
125
126#define ACPI_METHOD_NUM_LOCALS 8
127#define ACPI_METHOD_MAX_LOCAL 7
128
129#define ACPI_METHOD_NUM_ARGS 7
130#define ACPI_METHOD_MAX_ARG 6
131
132/*
133 * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG
134 */
135#define ACPI_OBJ_NUM_OPERANDS 8
136#define ACPI_OBJ_MAX_OPERAND 7
137
138/* Number of elements in the Result Stack frame, can be an arbitrary value */
139
140#define ACPI_RESULTS_FRAME_OBJ_NUM 8
141
142/*
143 * Maximal number of elements the Result Stack can contain,
144 * it may be an arbitrary value not exceeding the types of
145 * result_size and result_count (now u8).
146 */
147#define ACPI_RESULTS_OBJ_NUM_MAX 255
148
149/* Constants used in searching for the RSDP in low memory */
150
151#define ACPI_EBDA_PTR_LOCATION 0x0000040E /* Physical Address */
152#define ACPI_EBDA_PTR_LENGTH 2
153#define ACPI_EBDA_WINDOW_SIZE 1024
154#define ACPI_HI_RSDP_WINDOW_BASE 0x000E0000 /* Physical Address */
155#define ACPI_HI_RSDP_WINDOW_SIZE 0x00020000
156#define ACPI_RSDP_SCAN_STEP 16
157
158/* Operation regions */
159
160#define ACPI_USER_REGION_BEGIN 0x80
161
162/* Maximum space_ids for Operation Regions */
163
164#define ACPI_MAX_ADDRESS_SPACE 255
165#define ACPI_NUM_DEFAULT_SPACES 4
166
167/* Array sizes. Used for range checking also */
168
169#define ACPI_MAX_MATCH_OPCODE 5
170
171/* RSDP checksums */
172
173#define ACPI_RSDP_CHECKSUM_LENGTH 20
174#define ACPI_RSDP_XCHECKSUM_LENGTH 36
175
176/*
177 * SMBus, GSBus and IPMI buffer sizes. All have a 2-byte header,
178 * containing both Status and Length.
179 */
180#define ACPI_SERIAL_HEADER_SIZE 2 /* Common for below. Status and Length fields */
181
182#define ACPI_SMBUS_DATA_SIZE 32
183#define ACPI_SMBUS_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_SMBUS_DATA_SIZE
184
185#define ACPI_IPMI_DATA_SIZE 64
186#define ACPI_IPMI_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_IPMI_DATA_SIZE
187
188#define ACPI_MAX_GSBUS_DATA_SIZE 255
189#define ACPI_MAX_GSBUS_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_MAX_GSBUS_DATA_SIZE
190
191#define ACPI_PRM_INPUT_BUFFER_SIZE 26
192
193#define ACPI_FFH_INPUT_BUFFER_SIZE 256
194
195/* _sx_d and _sx_w control methods */
196
197#define ACPI_NUM_sx_d_METHODS 4
198#define ACPI_NUM_sx_w_METHODS 5
199
200/******************************************************************************
201 *
202 * Miscellaneous constants
203 *
204 *****************************************************************************/
205
206/* UUID constants */
207
208#define UUID_BUFFER_LENGTH 16 /* Length of UUID in memory */
209#define UUID_STRING_LENGTH 36 /* Total length of a UUID string */
210
211/* Positions for required hyphens (dashes) in UUID strings */
212
213#define UUID_HYPHEN1_OFFSET 8
214#define UUID_HYPHEN2_OFFSET 13
215#define UUID_HYPHEN3_OFFSET 18
216#define UUID_HYPHEN4_OFFSET 23
217
218/******************************************************************************
219 *
220 * ACPI AML Debugger
221 *
222 *****************************************************************************/
223
224#define ACPI_DEBUGGER_MAX_ARGS ACPI_METHOD_NUM_ARGS + 4 /* Max command line arguments */
225#define ACPI_DB_LINE_BUFFER_SIZE 512
226
227#define ACPI_DEBUGGER_COMMAND_PROMPT '-'
228#define ACPI_DEBUGGER_EXECUTE_PROMPT '%'
229
230#endif /* _ACCONFIG_H */