1/* $NetBSD: OsdMisc.c,v 1.15 2016/01/09 21:14:42 christos Exp $ */
2
3/*
4 * Copyright 2001 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed for the NetBSD Project by
20 * Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 * or promote products derived from this software without specific prior
23 * written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * OS Services Layer
40 *
41 * 6.10: Miscellaneous
42 */
43
44#include <sys/cdefs.h>
45__KERNEL_RCSID(0, "$NetBSD: OsdMisc.c,v 1.15 2016/01/09 21:14:42 christos Exp $");
46
47#include "opt_acpi.h"
48#include "opt_ddb.h"
49
50#include <sys/param.h>
51#include <sys/systm.h>
52
53#include <machine/db_machdep.h>
54
55#include <ddb/db_extern.h>
56#include <ddb/db_output.h>
57
58#include <dev/acpi/acpica.h>
59#include <dev/acpi/acpi_osd.h>
60
61#ifdef ACPI_DEBUG
62#include <external/bsd/acpica/dist/include/acdebug.h>
63#endif
64
65#ifdef ACPI_DSDT_OVERRIDE
66#ifndef ACPI_DSDT_FILE
67#define ACPI_DSDT_FILE "dsdt.hex"
68#endif
69#include ACPI_DSDT_FILE
70#endif
71
72int acpi_indebugger;
73
74/*
75 * AcpiOsSignal:
76 *
77 * Break to the debugger or display a breakpoint message.
78 */
79ACPI_STATUS
80AcpiOsSignal(UINT32 Function, void *Info)
81{
82 /*
83 * the upper layer might call with Info = NULL,
84 * which makes little sense.
85 */
86 if (Info == NULL)
87 return AE_NO_MEMORY;
88
89 switch (Function) {
90 case ACPI_SIGNAL_FATAL:
91 {
92 ACPI_SIGNAL_FATAL_INFO *info = Info;
93
94 panic("ACPI fatal signal: "
95 "Type 0x%08x, Code 0x%08x, Argument 0x%08x",
96 info->Type, info->Code, info->Argument);
97 /* NOTREACHED */
98 break;
99 }
100
101 case ACPI_SIGNAL_BREAKPOINT:
102 {
103#ifdef ACPI_BREAKPOINT
104 char *info = Info;
105
106 printf("%s\n", info);
107# if defined(DDB)
108 Debugger();
109# else
110 printf("ACPI: WARNING: DDB not configured into kernel.\n");
111 return AE_NOT_EXIST;
112# endif
113#endif
114 break;
115 }
116
117 default:
118 return AE_BAD_PARAMETER;
119 }
120
121 return AE_OK;
122}
123
124ACPI_STATUS
125AcpiOsGetLine(char *Buffer, UINT32 BufferLength, UINT32 *BytesRead)
126{
127#if defined(DDB)
128 char *cp;
129
130 db_readline(Buffer, 80);
131 for (cp = Buffer; *cp != 0; cp++)
132 if (*cp == '\n' || *cp == '\r')
133 *cp = 0;
134 db_output_line = 0;
135 return AE_OK;
136#else
137 printf("ACPI: WARNING: DDB not configured into kernel.\n");
138 return AE_NOT_EXIST;
139#endif
140}
141
142ACPI_STATUS
143AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
144 ACPI_TABLE_HEADER **NewTable)
145{
146#ifndef ACPI_DSDT_OVERRIDE
147 *NewTable = NULL;
148#else
149 if (strncmp(ExistingTable->Signature, "DSDT", 4) == 0)
150 *NewTable = (ACPI_TABLE_HEADER *)AmlCode;
151 else
152 *NewTable = NULL;
153#endif
154 return AE_OK;
155}
156
157ACPI_STATUS
158AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
159 ACPI_STRING *NewVal)
160{
161 if (!InitVal || !NewVal)
162 return AE_BAD_PARAMETER;
163
164 *NewVal = NULL;
165 return AE_OK;
166}
167
168
169/*
170 * AcpiOsPhysicalTableOverride:
171 *
172 * ExistingTable - Header of current table (probably firmware)
173 * NewAddress - Where new table address is returned
174 * (Physical address)
175 * NewTableLength - Where new table length is returned
176 *
177 * RETURN: Status, address/length of new table. Null pointer returned
178 * if no table is available to override.
179 *
180 * DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
181 */
182ACPI_STATUS
183AcpiOsPhysicalTableOverride (
184 ACPI_TABLE_HEADER *ExistingTable,
185 ACPI_PHYSICAL_ADDRESS *NewAddress,
186 UINT32 *NewTableLength)
187{
188
189 return AE_SUPPORT;
190}
191
192/*
193 * acpi_osd_debugger:
194 *
195 * Enter the ACPICA debugger.
196 */
197void
198acpi_osd_debugger(void)
199{
200#ifdef ACPI_DEBUG
201 ACPI_PARSE_OBJECT obj;
202 label_t acpi_jmpbuf;
203 label_t *savejmp;
204
205 printf("Entering ACPICA debugger...\n");
206 savejmp = db_recover;
207 setjmp(&acpi_jmpbuf);
208 db_recover = &acpi_jmpbuf;
209
210 acpi_indebugger = 1;
211 AcpiDbUserCommands('A', &obj);
212 acpi_indebugger = 0;
213
214 db_recover = savejmp;
215#else
216 printf("ACPI: WARNING: ACPICA debugger not present.\n");
217#endif
218}
219