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bellard6515b202006-05-03 22:02:44 +00001/*
2 * ACPI implementation
ths5fafdf22007-09-16 21:08:06 +00003 *
bellard6515b202006-05-03 22:02:44 +00004 * Copyright (c) 2006 Fabrice Bellard
ths5fafdf22007-09-16 21:08:06 +00005 *
bellard6515b202006-05-03 22:02:44 +00006 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License version 2 as published by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
Blue Swirl8167ee82009-07-16 20:47:01 +000016 * License along with this library; if not, see <http://www.gnu.org/licenses/>
Paolo Bonzini6b620ca2012-01-13 17:44:23 +010017 *
18 * Contributions after 2012-01-13 are licensed under the terms of the
19 * GNU GPL, version 2 or (at your option) any later version.
bellard6515b202006-05-03 22:02:44 +000020 */
Markus Armbrustere688df62018-02-01 12:18:31 +010021
Peter Maydellb6a0aa02016-01-26 18:17:03 +000022#include "qemu/osdep.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010023#include "sysemu/sysemu.h"
Paolo Bonzini83c9f4c2013-02-04 15:40:22 +010024#include "hw/hw.h"
Paolo Bonzini0d09e412013-02-05 17:06:20 +010025#include "hw/acpi/acpi.h"
Laszlo Erseke3845e72015-04-29 15:20:15 +020026#include "hw/nvram/fw_cfg.h"
Laszlo Ersek0c764a92013-03-21 00:23:17 +010027#include "qemu/config-file.h"
Markus Armbrustere688df62018-02-01 12:18:31 +010028#include "qapi/error.h"
Laszlo Ersek0c764a92013-03-21 00:23:17 +010029#include "qapi/opts-visitor.h"
Markus Armbruster9af23982018-02-11 10:36:01 +010030#include "qapi/qapi-events-run-state.h"
Markus Armbruster112ed242018-02-26 17:13:27 -060031#include "qapi/qapi-visit-misc.h"
Alistair Francis2ab4b132017-09-11 12:52:50 -070032#include "qemu/error-report.h"
Markus Armbruster922a01a2018-02-01 12:18:46 +010033#include "qemu/option.h"
bellard6515b202006-05-03 22:02:44 +000034
Michael Tokarev104bf022011-05-12 18:44:17 +040035struct acpi_table_header {
36 uint16_t _length; /* our length, not actual part of the hdr */
Laszlo Erseke980f2b2013-03-21 00:23:18 +010037 /* allows easier parsing for fw_cfg clients */
Michael Tokarev104bf022011-05-12 18:44:17 +040038 char sig[4]; /* ACPI signature (4 ASCII characters) */
aliguori8a92ea22009-02-27 20:12:36 +000039 uint32_t length; /* Length of table, in bytes, including header */
40 uint8_t revision; /* ACPI Specification minor version # */
41 uint8_t checksum; /* To make sum of entire table == 0 */
Michael Tokarev104bf022011-05-12 18:44:17 +040042 char oem_id[6]; /* OEM identification */
43 char oem_table_id[8]; /* OEM table identification */
aliguori8a92ea22009-02-27 20:12:36 +000044 uint32_t oem_revision; /* OEM revision number */
Michael Tokarev104bf022011-05-12 18:44:17 +040045 char asl_compiler_id[4]; /* ASL compiler vendor ID */
aliguori8a92ea22009-02-27 20:12:36 +000046 uint32_t asl_compiler_revision; /* ASL compiler revision number */
Stefan Weil541dc0d2011-08-31 12:38:01 +020047} QEMU_PACKED;
aliguori8a92ea22009-02-27 20:12:36 +000048
Michael Tokarev104bf022011-05-12 18:44:17 +040049#define ACPI_TABLE_HDR_SIZE sizeof(struct acpi_table_header)
50#define ACPI_TABLE_PFX_SIZE sizeof(uint16_t) /* size of the extra prefix */
51
Laszlo Erseke980f2b2013-03-21 00:23:18 +010052static const char unsigned dfl_hdr[ACPI_TABLE_HDR_SIZE - ACPI_TABLE_PFX_SIZE] =
Michael Tokarev104bf022011-05-12 18:44:17 +040053 "QEMU\0\0\0\0\1\0" /* sig (4), len(4), revno (1), csum (1) */
54 "QEMUQEQEMUQEMU\1\0\0\0" /* OEM id (6), table (8), revno (4) */
55 "QEMU\1\0\0\0" /* ASL compiler ID (4), version (4) */
56 ;
57
Laszlo Ersekcb88a4e2013-03-21 00:23:14 +010058char unsigned *acpi_tables;
aliguori8a92ea22009-02-27 20:12:36 +000059size_t acpi_tables_len;
60
Laszlo Ersek0c764a92013-03-21 00:23:17 +010061static QemuOptsList qemu_acpi_opts = {
62 .name = "acpi",
63 .implied_opt_name = "data",
64 .head = QTAILQ_HEAD_INITIALIZER(qemu_acpi_opts.head),
65 .desc = { { 0 } } /* validated with OptsVisitor */
66};
67
68static void acpi_register_config(void)
69{
70 qemu_add_opts(&qemu_acpi_opts);
71}
72
Eduardo Habkost34294e22016-02-16 18:59:07 -020073opts_init(acpi_register_config);
Laszlo Ersek0c764a92013-03-21 00:23:17 +010074
aliguori8a92ea22009-02-27 20:12:36 +000075static int acpi_checksum(const uint8_t *data, int len)
76{
77 int sum, i;
78 sum = 0;
Michael Tokarev104bf022011-05-12 18:44:17 +040079 for (i = 0; i < len; i++) {
aliguori8a92ea22009-02-27 20:12:36 +000080 sum += data[i];
Michael Tokarev104bf022011-05-12 18:44:17 +040081 }
aliguori8a92ea22009-02-27 20:12:36 +000082 return (-sum) & 0xff;
83}
84
Laszlo Erseke980f2b2013-03-21 00:23:18 +010085
86/* Install a copy of the ACPI table specified in @blob.
87 *
88 * If @has_header is set, @blob starts with the System Description Table Header
89 * structure. Otherwise, "dfl_hdr" is prepended. In any case, each header field
90 * is optionally overwritten from @hdrs.
91 *
92 * It is valid to call this function with
93 * (@blob == NULL && bloblen == 0 && !has_header).
94 *
95 * @hdrs->file and @hdrs->data are ignored.
96 *
97 * SIZE_MAX is considered "infinity" in this function.
98 *
99 * The number of tables that can be installed is not limited, but the 16-bit
100 * counter at the beginning of "acpi_tables" wraps around after UINT16_MAX.
101 */
102static void acpi_table_install(const char unsigned *blob, size_t bloblen,
103 bool has_header,
104 const struct AcpiTableOptions *hdrs,
105 Error **errp)
106{
107 size_t body_start;
108 const char unsigned *hdr_src;
109 size_t body_size, acpi_payload_size;
110 struct acpi_table_header *ext_hdr;
111 unsigned changed_fields;
112
113 /* Calculate where the ACPI table body starts within the blob, plus where
114 * to copy the ACPI table header from.
115 */
116 if (has_header) {
117 /* _length | ACPI header in blob | blob body
118 * ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^
119 * ACPI_TABLE_PFX_SIZE sizeof dfl_hdr body_size
120 * == body_start
121 *
122 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
123 * acpi_payload_size == bloblen
124 */
125 body_start = sizeof dfl_hdr;
126
127 if (bloblen < body_start) {
128 error_setg(errp, "ACPI table claiming to have header is too "
129 "short, available: %zu, expected: %zu", bloblen,
130 body_start);
131 return;
132 }
133 hdr_src = blob;
134 } else {
135 /* _length | ACPI header in template | blob body
136 * ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^
137 * ACPI_TABLE_PFX_SIZE sizeof dfl_hdr body_size
138 * == bloblen
139 *
140 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
141 * acpi_payload_size
142 */
143 body_start = 0;
144 hdr_src = dfl_hdr;
145 }
146 body_size = bloblen - body_start;
147 acpi_payload_size = sizeof dfl_hdr + body_size;
148
149 if (acpi_payload_size > UINT16_MAX) {
150 error_setg(errp, "ACPI table too big, requested: %zu, max: %u",
151 acpi_payload_size, (unsigned)UINT16_MAX);
152 return;
153 }
154
155 /* We won't fail from here on. Initialize / extend the globals. */
156 if (acpi_tables == NULL) {
157 acpi_tables_len = sizeof(uint16_t);
158 acpi_tables = g_malloc0(acpi_tables_len);
159 }
160
161 acpi_tables = g_realloc(acpi_tables, acpi_tables_len +
162 ACPI_TABLE_PFX_SIZE +
163 sizeof dfl_hdr + body_size);
164
165 ext_hdr = (struct acpi_table_header *)(acpi_tables + acpi_tables_len);
166 acpi_tables_len += ACPI_TABLE_PFX_SIZE;
167
168 memcpy(acpi_tables + acpi_tables_len, hdr_src, sizeof dfl_hdr);
169 acpi_tables_len += sizeof dfl_hdr;
170
171 if (blob != NULL) {
172 memcpy(acpi_tables + acpi_tables_len, blob + body_start, body_size);
173 acpi_tables_len += body_size;
174 }
175
176 /* increase number of tables */
Peter Maydellc65e5de2013-11-05 16:38:31 +0000177 stw_le_p(acpi_tables, lduw_le_p(acpi_tables) + 1u);
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100178
179 /* Update the header fields. The strings need not be NUL-terminated. */
180 changed_fields = 0;
181 ext_hdr->_length = cpu_to_le16(acpi_payload_size);
182
183 if (hdrs->has_sig) {
184 strncpy(ext_hdr->sig, hdrs->sig, sizeof ext_hdr->sig);
185 ++changed_fields;
186 }
187
188 if (has_header && le32_to_cpu(ext_hdr->length) != acpi_payload_size) {
Alistair Francis8297be82017-09-11 12:52:53 -0700189 warn_report("ACPI table has wrong length, header says "
190 "%" PRIu32 ", actual size %zu bytes",
191 le32_to_cpu(ext_hdr->length), acpi_payload_size);
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100192 }
193 ext_hdr->length = cpu_to_le32(acpi_payload_size);
194
195 if (hdrs->has_rev) {
196 ext_hdr->revision = hdrs->rev;
197 ++changed_fields;
198 }
199
200 ext_hdr->checksum = 0;
201
202 if (hdrs->has_oem_id) {
203 strncpy(ext_hdr->oem_id, hdrs->oem_id, sizeof ext_hdr->oem_id);
204 ++changed_fields;
205 }
206 if (hdrs->has_oem_table_id) {
207 strncpy(ext_hdr->oem_table_id, hdrs->oem_table_id,
208 sizeof ext_hdr->oem_table_id);
209 ++changed_fields;
210 }
211 if (hdrs->has_oem_rev) {
212 ext_hdr->oem_revision = cpu_to_le32(hdrs->oem_rev);
213 ++changed_fields;
214 }
215 if (hdrs->has_asl_compiler_id) {
216 strncpy(ext_hdr->asl_compiler_id, hdrs->asl_compiler_id,
217 sizeof ext_hdr->asl_compiler_id);
218 ++changed_fields;
219 }
220 if (hdrs->has_asl_compiler_rev) {
221 ext_hdr->asl_compiler_revision = cpu_to_le32(hdrs->asl_compiler_rev);
222 ++changed_fields;
223 }
224
225 if (!has_header && changed_fields == 0) {
Alistair Francis2ab4b132017-09-11 12:52:50 -0700226 warn_report("ACPI table: no headers are specified");
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100227 }
228
229 /* recalculate checksum */
230 ext_hdr->checksum = acpi_checksum((const char unsigned *)ext_hdr +
231 ACPI_TABLE_PFX_SIZE, acpi_payload_size);
232}
233
Laszlo Ersek23084322013-03-21 00:23:19 +0100234void acpi_table_add(const QemuOpts *opts, Error **errp)
aliguori8a92ea22009-02-27 20:12:36 +0000235{
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100236 AcpiTableOptions *hdrs = NULL;
Laszlo Ersek445d9ca2013-03-21 00:23:15 +0100237 Error *err = NULL;
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100238 char **pathnames = NULL;
239 char **cur;
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100240 size_t bloblen = 0;
241 char unsigned *blob = NULL;
aliguori8a92ea22009-02-27 20:12:36 +0000242
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100243 {
Eric Blake09204ea2016-06-09 10:48:36 -0600244 Visitor *v;
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100245
Eric Blake09204ea2016-06-09 10:48:36 -0600246 v = opts_visitor_new(opts);
247 visit_type_AcpiTableOptions(v, NULL, &hdrs, &err);
248 visit_free(v);
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100249 }
250
251 if (err) {
252 goto out;
253 }
254 if (hdrs->has_file == hdrs->has_data) {
255 error_setg(&err, "'-acpitable' requires one of 'data' or 'file'");
256 goto out;
257 }
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100258
259 pathnames = g_strsplit(hdrs->has_file ? hdrs->file : hdrs->data, ":", 0);
260 if (pathnames == NULL || pathnames[0] == NULL) {
261 error_setg(&err, "'-acpitable' requires at least one pathname");
Laszlo Ersek445d9ca2013-03-21 00:23:15 +0100262 goto out;
aliguori8a92ea22009-02-27 20:12:36 +0000263 }
264
Michael Tokarev104bf022011-05-12 18:44:17 +0400265 /* now read in the data files, reallocating buffer as needed */
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100266 for (cur = pathnames; *cur; ++cur) {
267 int fd = open(*cur, O_RDONLY | O_BINARY);
Michael Tokarev104bf022011-05-12 18:44:17 +0400268
269 if (fd < 0) {
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100270 error_setg(&err, "can't open file %s: %s", *cur, strerror(errno));
Laszlo Ersek445d9ca2013-03-21 00:23:15 +0100271 goto out;
aliguori8a92ea22009-02-27 20:12:36 +0000272 }
273
Michael Tokarev104bf022011-05-12 18:44:17 +0400274 for (;;) {
Laszlo Ersekcb88a4e2013-03-21 00:23:14 +0100275 char unsigned data[8192];
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100276 ssize_t r;
277
278 r = read(fd, data, sizeof data);
Michael Tokarev104bf022011-05-12 18:44:17 +0400279 if (r == 0) {
280 break;
281 } else if (r > 0) {
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100282 blob = g_realloc(blob, bloblen + r);
283 memcpy(blob + bloblen, data, r);
284 bloblen += r;
Michael Tokarev104bf022011-05-12 18:44:17 +0400285 } else if (errno != EINTR) {
Laszlo Ersek445d9ca2013-03-21 00:23:15 +0100286 error_setg(&err, "can't read file %s: %s",
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100287 *cur, strerror(errno));
aliguori8a92ea22009-02-27 20:12:36 +0000288 close(fd);
Laszlo Ersek445d9ca2013-03-21 00:23:15 +0100289 goto out;
aliguori8a92ea22009-02-27 20:12:36 +0000290 }
Isaku Yamahatad729bb92010-07-28 23:08:42 +0000291 }
aliguori8a92ea22009-02-27 20:12:36 +0000292
293 close(fd);
Isaku Yamahatad729bb92010-07-28 23:08:42 +0000294 }
aliguori8a92ea22009-02-27 20:12:36 +0000295
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100296 acpi_table_install(blob, bloblen, hdrs->has_file, hdrs, &err);
Michael Tokarev104bf022011-05-12 18:44:17 +0400297
Laszlo Ersek445d9ca2013-03-21 00:23:15 +0100298out:
Laszlo Erseke980f2b2013-03-21 00:23:18 +0100299 g_free(blob);
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100300 g_strfreev(pathnames);
Eric Blake96a16162016-02-23 14:14:33 -0700301 qapi_free_AcpiTableOptions(hdrs);
Laszlo Ersek0c764a92013-03-21 00:23:17 +0100302
Laszlo Ersek23084322013-03-21 00:23:19 +0100303 error_propagate(errp, err);
aliguori8a92ea22009-02-27 20:12:36 +0000304}
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900305
Michael S. Tsirkin60de1162013-10-07 14:41:40 +0300306static bool acpi_table_builtin = false;
307
308void acpi_table_add_builtin(const QemuOpts *opts, Error **errp)
309{
310 acpi_table_builtin = true;
311 acpi_table_add(opts, errp);
312}
313
314unsigned acpi_table_len(void *current)
315{
316 struct acpi_table_header *hdr = current - sizeof(hdr->_length);
317 return hdr->_length;
318}
319
320static
321void *acpi_table_hdr(void *h)
322{
323 struct acpi_table_header *hdr = h;
324 return &hdr->sig;
325}
326
327uint8_t *acpi_table_first(void)
328{
329 if (acpi_table_builtin || !acpi_tables) {
330 return NULL;
331 }
332 return acpi_table_hdr(acpi_tables + ACPI_TABLE_PFX_SIZE);
333}
334
335uint8_t *acpi_table_next(uint8_t *current)
336{
337 uint8_t *next = current + acpi_table_len(current);
338
339 if (next - acpi_tables >= acpi_tables_len) {
340 return NULL;
341 } else {
342 return acpi_table_hdr(next);
343 }
344}
345
Laszlo Ersek88594e42016-01-18 15:12:12 +0100346int acpi_get_slic_oem(AcpiSlicOem *oem)
347{
348 uint8_t *u;
349
350 for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
351 struct acpi_table_header *hdr = (void *)(u - sizeof(hdr->_length));
352
353 if (memcmp(hdr->sig, "SLIC", 4) == 0) {
354 oem->id = hdr->oem_id;
355 oem->table_id = hdr->oem_table_id;
356 return 0;
357 }
358 }
359 return -1;
360}
361
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100362static void acpi_notify_wakeup(Notifier *notifier, void *data)
363{
364 ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup);
365 WakeupReason *reason = data;
366
367 switch (*reason) {
Gerd Hoffmann62aeb0f2012-02-23 13:45:24 +0100368 case QEMU_WAKEUP_REASON_RTC:
369 ar->pm1.evt.sts |=
370 (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_RT_CLOCK_STATUS);
371 break;
Gerd Hoffmann6595abc2012-02-23 13:45:25 +0100372 case QEMU_WAKEUP_REASON_PMTIMER:
373 ar->pm1.evt.sts |=
374 (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_TIMER_STATUS);
375 break;
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100376 case QEMU_WAKEUP_REASON_OTHER:
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100377 /* ACPI_BITMASK_WAKE_STATUS should be set on resume.
378 Pretend that resume was caused by power button */
379 ar->pm1.evt.sts |=
380 (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_POWER_BUTTON_STATUS);
381 break;
Liu, Jinsong4bc78a82013-09-25 16:38:29 +0000382 default:
383 break;
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100384 }
385}
386
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900387/* ACPI PM1a EVT */
Gerd Hoffmann2886be12012-02-23 13:45:17 +0100388uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar)
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900389{
Pavel Dovgalyuk3ef0eab2014-11-07 13:31:33 +0300390 /* Compare ns-clock, not PM timer ticks, because
391 acpi_pm_tmr_update function uses ns for setting the timer. */
392 int64_t d = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
393 if (d >= muldiv64(ar->tmr.overflow_time,
Rutuja Shah73bcb242016-03-21 21:32:30 +0530394 NANOSECONDS_PER_SECOND, PM_TIMER_FREQUENCY)) {
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100395 ar->pm1.evt.sts |= ACPI_BITMASK_TIMER_STATUS;
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900396 }
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100397 return ar->pm1.evt.sts;
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900398}
399
Gerd Hoffmannb5a7c022012-11-22 13:25:10 +0100400static void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900401{
Gerd Hoffmann2886be12012-02-23 13:45:17 +0100402 uint16_t pm1_sts = acpi_pm1_evt_get_sts(ar);
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900403 if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
404 /* if TMRSTS is reset, then compute the new overflow time */
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100405 acpi_pm_tmr_calc_overflow_time(ar);
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900406 }
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100407 ar->pm1.evt.sts &= ~val;
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900408}
409
Gerd Hoffmannb5a7c022012-11-22 13:25:10 +0100410static void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
Gerd Hoffmann8283c4f2012-02-23 13:45:18 +0100411{
412 ar->pm1.evt.en = val;
Gerd Hoffmann62aeb0f2012-02-23 13:45:24 +0100413 qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC,
414 val & ACPI_BITMASK_RT_CLOCK_ENABLE);
Gerd Hoffmann6595abc2012-02-23 13:45:25 +0100415 qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER,
416 val & ACPI_BITMASK_TIMER_ENABLE);
Gerd Hoffmann8283c4f2012-02-23 13:45:18 +0100417}
418
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100419void acpi_pm1_evt_power_down(ACPIREGS *ar)
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900420{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100421 if (ar->pm1.evt.en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
422 ar->pm1.evt.sts |= ACPI_BITMASK_POWER_BUTTON_STATUS;
423 ar->tmr.update_sci(ar);
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900424 }
425}
426
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100427void acpi_pm1_evt_reset(ACPIREGS *ar)
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900428{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100429 ar->pm1.evt.sts = 0;
430 ar->pm1.evt.en = 0;
Gerd Hoffmann62aeb0f2012-02-23 13:45:24 +0100431 qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC, 0);
Gerd Hoffmann6595abc2012-02-23 13:45:25 +0100432 qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER, 0);
Isaku Yamahata04dc3082011-03-25 19:54:39 +0900433}
434
Gerd Hoffmannb5a7c022012-11-22 13:25:10 +0100435static uint64_t acpi_pm_evt_read(void *opaque, hwaddr addr, unsigned width)
436{
437 ACPIREGS *ar = opaque;
438 switch (addr) {
439 case 0:
440 return acpi_pm1_evt_get_sts(ar);
441 case 2:
442 return ar->pm1.evt.en;
443 default:
444 return 0;
445 }
446}
447
448static void acpi_pm_evt_write(void *opaque, hwaddr addr, uint64_t val,
449 unsigned width)
450{
451 ACPIREGS *ar = opaque;
452 switch (addr) {
453 case 0:
454 acpi_pm1_evt_write_sts(ar, val);
455 ar->pm1.evt.update_sci(ar);
456 break;
457 case 2:
458 acpi_pm1_evt_write_en(ar, val);
459 ar->pm1.evt.update_sci(ar);
460 break;
461 }
462}
463
464static const MemoryRegionOps acpi_pm_evt_ops = {
465 .read = acpi_pm_evt_read,
466 .write = acpi_pm_evt_write,
467 .valid.min_access_size = 2,
468 .valid.max_access_size = 2,
469 .endianness = DEVICE_LITTLE_ENDIAN,
470};
471
472void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
473 MemoryRegion *parent)
474{
475 ar->pm1.evt.update_sci = update_sci;
Paolo Bonzini64bde0f2013-06-06 21:25:08 -0400476 memory_region_init_io(&ar->pm1.evt.io, memory_region_owner(parent),
477 &acpi_pm_evt_ops, ar, "acpi-evt", 4);
Gerd Hoffmannb5a7c022012-11-22 13:25:10 +0100478 memory_region_add_subregion(parent, 0, &ar->pm1.evt.io);
479}
480
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900481/* ACPI PM_TMR */
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100482void acpi_pm_tmr_update(ACPIREGS *ar, bool enable)
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900483{
484 int64_t expire_time;
485
486 /* schedule a timer interruption if needed */
487 if (enable) {
Rutuja Shah73bcb242016-03-21 21:32:30 +0530488 expire_time = muldiv64(ar->tmr.overflow_time, NANOSECONDS_PER_SECOND,
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900489 PM_TIMER_FREQUENCY);
Alex Blighbc72ad62013-08-21 16:03:08 +0100490 timer_mod(ar->tmr.timer, expire_time);
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900491 } else {
Alex Blighbc72ad62013-08-21 16:03:08 +0100492 timer_del(ar->tmr.timer);
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900493 }
494}
495
Paolo Bonzini87776ab2016-03-15 15:36:13 +0100496static inline int64_t acpi_pm_tmr_get_clock(void)
497{
498 return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), PM_TIMER_FREQUENCY,
499 NANOSECONDS_PER_SECOND);
500}
501
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100502void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar)
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900503{
504 int64_t d = acpi_pm_tmr_get_clock();
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100505 ar->tmr.overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900506}
507
Gerd Hoffmann77d58b12012-11-22 12:12:30 +0100508static uint32_t acpi_pm_tmr_get(ACPIREGS *ar)
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900509{
Dong Xu Wang3a931132011-11-29 16:52:38 +0800510 uint32_t d = acpi_pm_tmr_get_clock();
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900511 return d & 0xffffff;
512}
513
514static void acpi_pm_tmr_timer(void *opaque)
515{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100516 ACPIREGS *ar = opaque;
Gerd Hoffmann6595abc2012-02-23 13:45:25 +0100517 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_PMTIMER);
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100518 ar->tmr.update_sci(ar);
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900519}
520
Gerd Hoffmann77d58b12012-11-22 12:12:30 +0100521static uint64_t acpi_pm_tmr_read(void *opaque, hwaddr addr, unsigned width)
522{
523 return acpi_pm_tmr_get(opaque);
524}
525
Gerd Hoffmann2d3b9892013-05-14 14:29:04 +0200526static void acpi_pm_tmr_write(void *opaque, hwaddr addr, uint64_t val,
527 unsigned width)
528{
529 /* nothing */
530}
531
Gerd Hoffmann77d58b12012-11-22 12:12:30 +0100532static const MemoryRegionOps acpi_pm_tmr_ops = {
533 .read = acpi_pm_tmr_read,
Gerd Hoffmann2d3b9892013-05-14 14:29:04 +0200534 .write = acpi_pm_tmr_write,
Gerd Hoffmann77d58b12012-11-22 12:12:30 +0100535 .valid.min_access_size = 4,
536 .valid.max_access_size = 4,
537 .endianness = DEVICE_LITTLE_ENDIAN,
538};
539
540void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
541 MemoryRegion *parent)
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900542{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100543 ar->tmr.update_sci = update_sci;
Alex Blighbc72ad62013-08-21 16:03:08 +0100544 ar->tmr.timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, acpi_pm_tmr_timer, ar);
Paolo Bonzini64bde0f2013-06-06 21:25:08 -0400545 memory_region_init_io(&ar->tmr.io, memory_region_owner(parent),
546 &acpi_pm_tmr_ops, ar, "acpi-tmr", 4);
Gerd Hoffmann77d58b12012-11-22 12:12:30 +0100547 memory_region_add_subregion(parent, 8, &ar->tmr.io);
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900548}
549
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100550void acpi_pm_tmr_reset(ACPIREGS *ar)
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900551{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100552 ar->tmr.overflow_time = 0;
Alex Blighbc72ad62013-08-21 16:03:08 +0100553 timer_del(ar->tmr.timer);
Isaku Yamahataa54d41a2011-03-25 19:54:38 +0900554}
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900555
556/* ACPI PM1aCNT */
Gerd Hoffmannafafe4b2012-11-22 13:17:57 +0100557static void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val)
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900558{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100559 ar->pm1.cnt.cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900560
561 if (val & ACPI_BITMASK_SLEEP_ENABLE) {
562 /* change suspend type */
563 uint16_t sus_typ = (val >> 10) & 7;
564 switch(sus_typ) {
565 case 0: /* soft power off */
Eric Blakecf83f142017-05-15 16:41:13 -0500566 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900567 break;
568 case 1:
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100569 qemu_system_suspend_request();
570 break;
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900571 default:
Gerd Hoffmannafafe4b2012-11-22 13:17:57 +0100572 if (sus_typ == ar->pm1.cnt.s4_val) { /* S4 request */
Wenchao Xia2ea41002014-06-18 08:43:39 +0200573 qapi_event_send_suspend_disk(&error_abort);
Eric Blakecf83f142017-05-15 16:41:13 -0500574 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
Gleb Natapov459ae5e2012-06-04 14:31:55 +0300575 }
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900576 break;
577 }
578 }
579}
580
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100581void acpi_pm1_cnt_update(ACPIREGS *ar,
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900582 bool sci_enable, bool sci_disable)
583{
584 /* ACPI specs 3.0, 4.7.2.5 */
585 if (sci_enable) {
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100586 ar->pm1.cnt.cnt |= ACPI_BITMASK_SCI_ENABLE;
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900587 } else if (sci_disable) {
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100588 ar->pm1.cnt.cnt &= ~ACPI_BITMASK_SCI_ENABLE;
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900589 }
590}
591
Gerd Hoffmannafafe4b2012-11-22 13:17:57 +0100592static uint64_t acpi_pm_cnt_read(void *opaque, hwaddr addr, unsigned width)
593{
594 ACPIREGS *ar = opaque;
595 return ar->pm1.cnt.cnt;
596}
597
598static void acpi_pm_cnt_write(void *opaque, hwaddr addr, uint64_t val,
599 unsigned width)
600{
601 acpi_pm1_cnt_write(opaque, val);
602}
603
604static const MemoryRegionOps acpi_pm_cnt_ops = {
605 .read = acpi_pm_cnt_read,
606 .write = acpi_pm_cnt_write,
607 .valid.min_access_size = 2,
608 .valid.max_access_size = 2,
609 .endianness = DEVICE_LITTLE_ENDIAN,
610};
611
Laszlo Ersek9a10bbb2015-04-29 15:20:14 +0200612void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent,
613 bool disable_s3, bool disable_s4, uint8_t s4_val)
Gerd Hoffmannafafe4b2012-11-22 13:17:57 +0100614{
Laszlo Erseke3845e72015-04-29 15:20:15 +0200615 FWCfgState *fw_cfg;
616
Bruce Rogers560e6392013-04-02 12:41:40 -0600617 ar->pm1.cnt.s4_val = s4_val;
Gerd Hoffmannafafe4b2012-11-22 13:17:57 +0100618 ar->wakeup.notify = acpi_notify_wakeup;
619 qemu_register_wakeup_notifier(&ar->wakeup);
Paolo Bonzini64bde0f2013-06-06 21:25:08 -0400620 memory_region_init_io(&ar->pm1.cnt.io, memory_region_owner(parent),
621 &acpi_pm_cnt_ops, ar, "acpi-cnt", 2);
Gerd Hoffmannafafe4b2012-11-22 13:17:57 +0100622 memory_region_add_subregion(parent, 4, &ar->pm1.cnt.io);
Laszlo Erseke3845e72015-04-29 15:20:15 +0200623
624 fw_cfg = fw_cfg_find();
625 if (fw_cfg) {
626 uint8_t suspend[6] = {128, 0, 0, 129, 128, 128};
627 suspend[3] = 1 | ((!disable_s3) << 7);
628 suspend[4] = s4_val | ((!disable_s4) << 7);
629
630 fw_cfg_add_file(fw_cfg, "etc/system-states", g_memdup(suspend, 6), 6);
631 }
Gerd Hoffmannafafe4b2012-11-22 13:17:57 +0100632}
633
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100634void acpi_pm1_cnt_reset(ACPIREGS *ar)
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900635{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100636 ar->pm1.cnt.cnt = 0;
Isaku Yamahataeaba51c2011-03-25 19:54:40 +0900637}
Isaku Yamahata23910d32011-03-25 19:54:41 +0900638
639/* ACPI GPE */
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100640void acpi_gpe_init(ACPIREGS *ar, uint8_t len)
Isaku Yamahata23910d32011-03-25 19:54:41 +0900641{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100642 ar->gpe.len = len;
Michael S. Tsirkind9a3b332015-11-19 15:14:07 +0200643 /* Only first len / 2 bytes are ever used,
644 * but the caller in ich9.c migrates full len bytes.
645 * TODO: fix ich9.c and drop the extra allocation.
646 */
647 ar->gpe.sts = g_malloc0(len);
648 ar->gpe.en = g_malloc0(len);
Isaku Yamahata23910d32011-03-25 19:54:41 +0900649}
650
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100651void acpi_gpe_reset(ACPIREGS *ar)
Isaku Yamahata23910d32011-03-25 19:54:41 +0900652{
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100653 memset(ar->gpe.sts, 0, ar->gpe.len / 2);
654 memset(ar->gpe.en, 0, ar->gpe.len / 2);
Isaku Yamahata23910d32011-03-25 19:54:41 +0900655}
656
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100657static uint8_t *acpi_gpe_ioport_get_ptr(ACPIREGS *ar, uint32_t addr)
Isaku Yamahata23910d32011-03-25 19:54:41 +0900658{
659 uint8_t *cur = NULL;
660
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100661 if (addr < ar->gpe.len / 2) {
662 cur = ar->gpe.sts + addr;
663 } else if (addr < ar->gpe.len) {
664 cur = ar->gpe.en + addr - ar->gpe.len / 2;
Isaku Yamahata23910d32011-03-25 19:54:41 +0900665 } else {
666 abort();
667 }
668
669 return cur;
670}
671
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100672void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val)
Isaku Yamahata23910d32011-03-25 19:54:41 +0900673{
674 uint8_t *cur;
675
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100676 cur = acpi_gpe_ioport_get_ptr(ar, addr);
677 if (addr < ar->gpe.len / 2) {
Isaku Yamahata23910d32011-03-25 19:54:41 +0900678 /* GPE_STS */
679 *cur = (*cur) & ~val;
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100680 } else if (addr < ar->gpe.len) {
Isaku Yamahata23910d32011-03-25 19:54:41 +0900681 /* GPE_EN */
682 *cur = val;
683 } else {
684 abort();
685 }
686}
687
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100688uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr)
Isaku Yamahata23910d32011-03-25 19:54:41 +0900689{
690 uint8_t *cur;
691 uint32_t val;
692
Gerd Hoffmann355bf2e2012-02-23 13:45:16 +0100693 cur = acpi_gpe_ioport_get_ptr(ar, addr);
Isaku Yamahata23910d32011-03-25 19:54:41 +0900694 val = 0;
695 if (cur != NULL) {
696 val = *cur;
697 }
698
699 return val;
700}
Igor Mammedov06313502013-12-13 17:22:07 +0100701
Zhu Guihuaca9b46b2015-05-13 17:21:36 +0800702void acpi_send_gpe_event(ACPIREGS *ar, qemu_irq irq,
Igor Mammedoveaf23bf2016-05-31 11:57:57 +0200703 AcpiEventStatusBits status)
Zhu Guihuaca9b46b2015-05-13 17:21:36 +0800704{
705 ar->gpe.sts[0] |= status;
706 acpi_update_sci(ar, irq);
707}
708
Igor Mammedov06313502013-12-13 17:22:07 +0100709void acpi_update_sci(ACPIREGS *regs, qemu_irq irq)
710{
711 int sci_level, pm1a_sts;
712
713 pm1a_sts = acpi_pm1_evt_get_sts(regs);
714
715 sci_level = ((pm1a_sts &
716 regs->pm1.evt.en & ACPI_BITMASK_PM1_COMMON_ENABLED) != 0) ||
717 ((regs->gpe.sts[0] & regs->gpe.en[0]) != 0);
718
719 qemu_set_irq(irq, sci_level);
720
721 /* schedule a timer interruption if needed */
722 acpi_pm_tmr_update(regs,
723 (regs->pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
724 !(pm1a_sts & ACPI_BITMASK_TIMER_STATUS));
725}