[qemu.git] / hw / acpi.c

/*
 * ACPI implementation
 *
 * Copyright (c) 2006 Fabrice Bellard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 2 as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>
 */
#include "sysemu.h"
#include "hw.h"
#include "pc.h"
#include "acpi.h"

struct acpi_table_header
{
    char signature [4];    /* ACPI signature (4 ASCII characters) */
    uint32_t length;          /* Length of table, in bytes, including header */
    uint8_t revision;         /* ACPI Specification minor version # */
    uint8_t checksum;         /* To make sum of entire table == 0 */
    char oem_id [6];       /* OEM identification */
    char oem_table_id [8]; /* OEM table identification */
    uint32_t oem_revision;    /* OEM revision number */
    char asl_compiler_id [4]; /* ASL compiler vendor ID */
    uint32_t asl_compiler_revision; /* ASL compiler revision number */
} __attribute__((packed));

char *acpi_tables;
size_t acpi_tables_len;

static int acpi_checksum(const uint8_t *data, int len)
{
    int sum, i;
    sum = 0;
    for(i = 0; i < len; i++)
        sum += data[i];
    return (-sum) & 0xff;
}

int acpi_table_add(const char *t)
{
    static const char *dfl_id = "QEMUQEMU";
    char buf[1024], *p, *f;
    struct acpi_table_header acpi_hdr;
    unsigned long val;
    uint32_t length;
    struct acpi_table_header *acpi_hdr_p;
    size_t off;

    memset(&acpi_hdr, 0, sizeof(acpi_hdr));
  
    if (get_param_value(buf, sizeof(buf), "sig", t)) {
        strncpy(acpi_hdr.signature, buf, 4);
    } else {
        strncpy(acpi_hdr.signature, dfl_id, 4);
    }
    if (get_param_value(buf, sizeof(buf), "rev", t)) {
        val = strtoul(buf, &p, 10);
        if (val > 255 || *p != '\0')
            goto out;
    } else {
        val = 1;
    }
    acpi_hdr.revision = (int8_t)val;

    if (get_param_value(buf, sizeof(buf), "oem_id", t)) {
        strncpy(acpi_hdr.oem_id, buf, 6);
    } else {
        strncpy(acpi_hdr.oem_id, dfl_id, 6);
    }

    if (get_param_value(buf, sizeof(buf), "oem_table_id", t)) {
        strncpy(acpi_hdr.oem_table_id, buf, 8);
    } else {
        strncpy(acpi_hdr.oem_table_id, dfl_id, 8);
    }

    if (get_param_value(buf, sizeof(buf), "oem_rev", t)) {
        val = strtol(buf, &p, 10);
        if(*p != '\0')
            goto out;
    } else {
        val = 1;
    }
    acpi_hdr.oem_revision = cpu_to_le32(val);

    if (get_param_value(buf, sizeof(buf), "asl_compiler_id", t)) {
        strncpy(acpi_hdr.asl_compiler_id, buf, 4);
    } else {
        strncpy(acpi_hdr.asl_compiler_id, dfl_id, 4);
    }

    if (get_param_value(buf, sizeof(buf), "asl_compiler_rev", t)) {
        val = strtol(buf, &p, 10);
        if(*p != '\0')
            goto out;
    } else {
        val = 1;
    }
    acpi_hdr.asl_compiler_revision = cpu_to_le32(val);
    
    if (!get_param_value(buf, sizeof(buf), "data", t)) {
         buf[0] = '\0';
    }

    length = sizeof(acpi_hdr);

    f = buf;
    while (buf[0]) {
        struct stat s;
        char *n = strchr(f, ':');
        if (n)
            *n = '\0';
        if(stat(f, &s) < 0) {
            fprintf(stderr, "Can't stat file '%s': %s\n", f, strerror(errno));
            goto out;
        }
        length += s.st_size;
        if (!n)
            break;
        *n = ':';
        f = n + 1;
    }

    if (!acpi_tables) {
        acpi_tables_len = sizeof(uint16_t);
        acpi_tables = qemu_mallocz(acpi_tables_len);
    }
    acpi_tables = qemu_realloc(acpi_tables,
                               acpi_tables_len + sizeof(uint16_t) + length);
    p = acpi_tables + acpi_tables_len;
    acpi_tables_len += sizeof(uint16_t) + length;

    *(uint16_t*)p = cpu_to_le32(length);
    p += sizeof(uint16_t);
    memcpy(p, &acpi_hdr, sizeof(acpi_hdr));
    off = sizeof(acpi_hdr);

    f = buf;
    while (buf[0]) {
        struct stat s;
        int fd;
        char *n = strchr(f, ':');
        if (n)
            *n = '\0';
        fd = open(f, O_RDONLY);

        if(fd < 0)
            goto out;
        if(fstat(fd, &s) < 0) {
            close(fd);
            goto out;
        }

        /* off < length is necessary because file size can be changed
           under our foot */
        while(s.st_size && off < length) {
            int r;
            r = read(fd, p + off, s.st_size);
            if (r > 0) {
                off += r;
                s.st_size -= r;
            } else if ((r < 0 && errno != EINTR) || r == 0) {
                close(fd);
                goto out;
            }
        }

        close(fd);
        if (!n)
            break;
        f = n + 1;
    }
    if (off < length) {
        /* don't pass random value in process to guest */
        memset(p + off, 0, length - off);
    }

    acpi_hdr_p = (struct acpi_table_header*)p;
    acpi_hdr_p->length = cpu_to_le32(length);
    acpi_hdr_p->checksum = acpi_checksum((uint8_t*)p, length);
    /* increase number of tables */
    (*(uint16_t*)acpi_tables) =
	    cpu_to_le32(le32_to_cpu(*(uint16_t*)acpi_tables) + 1);
    return 0;
out:
    if (acpi_tables) {
        qemu_free(acpi_tables);
        acpi_tables = NULL;
    }
    return -1;
}

/* ACPI PM1a EVT */
uint16_t acpi_pm1_evt_get_sts(ACPIPM1EVT *pm1, int64_t overflow_time)
{
    int64_t d = acpi_pm_tmr_get_clock();
    if (d >= overflow_time) {
        pm1->sts |= ACPI_BITMASK_TIMER_STATUS;
    }
    return pm1->sts;
}

void acpi_pm1_evt_write_sts(ACPIPM1EVT *pm1, ACPIPMTimer *tmr, uint16_t val)
{
    uint16_t pm1_sts = acpi_pm1_evt_get_sts(pm1, tmr->overflow_time);
    if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
        /* if TMRSTS is reset, then compute the new overflow time */
        acpi_pm_tmr_calc_overflow_time(tmr);
    }
    pm1->sts &= ~val;
}

void acpi_pm1_evt_power_down(ACPIPM1EVT *pm1, ACPIPMTimer *tmr)
{
    if (!pm1) {
        qemu_system_shutdown_request();
    } else if (pm1->en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
        pm1->sts |= ACPI_BITMASK_POWER_BUTTON_STATUS;
        tmr->update_sci(tmr);
    }
}

void acpi_pm1_evt_reset(ACPIPM1EVT *pm1)
{
    pm1->sts = 0;
    pm1->en = 0;
}

/* ACPI PM_TMR */
void acpi_pm_tmr_update(ACPIPMTimer *tmr, bool enable)
{
    int64_t expire_time;

    /* schedule a timer interruption if needed */
    if (enable) {
        expire_time = muldiv64(tmr->overflow_time, get_ticks_per_sec(),
                               PM_TIMER_FREQUENCY);
        qemu_mod_timer(tmr->timer, expire_time);
    } else {
        qemu_del_timer(tmr->timer);
    }
}

void acpi_pm_tmr_calc_overflow_time(ACPIPMTimer *tmr)
{
    int64_t d = acpi_pm_tmr_get_clock();
    tmr->overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
}

uint32_t acpi_pm_tmr_get(ACPIPMTimer *tmr)
{
    uint32_t d = acpi_pm_tmr_get_clock();;
    return d & 0xffffff;
}

static void acpi_pm_tmr_timer(void *opaque)
{
    ACPIPMTimer *tmr = opaque;
    tmr->update_sci(tmr);
}

void acpi_pm_tmr_init(ACPIPMTimer *tmr, acpi_update_sci_fn update_sci)
{
    tmr->update_sci = update_sci;
    tmr->timer = qemu_new_timer_ns(vm_clock, acpi_pm_tmr_timer, tmr);
}

void acpi_pm_tmr_reset(ACPIPMTimer *tmr)
{
    tmr->overflow_time = 0;
    qemu_del_timer(tmr->timer);
}

/* ACPI PM1aCNT */
void acpi_pm1_cnt_init(ACPIPM1CNT *pm1_cnt, qemu_irq cmos_s3)
{
    pm1_cnt->cmos_s3 = cmos_s3;
}

void acpi_pm1_cnt_write(ACPIPM1EVT *pm1a, ACPIPM1CNT *pm1_cnt, uint16_t val)
{
    pm1_cnt->cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);

    if (val & ACPI_BITMASK_SLEEP_ENABLE) {
        /* change suspend type */
        uint16_t sus_typ = (val >> 10) & 7;
        switch(sus_typ) {
        case 0: /* soft power off */
            qemu_system_shutdown_request();
            break;
        case 1:
            /* ACPI_BITMASK_WAKE_STATUS should be set on resume.
               Pretend that resume was caused by power button */
            pm1a->sts |=
                (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_POWER_BUTTON_STATUS);
            qemu_system_reset_request();
            qemu_irq_raise(pm1_cnt->cmos_s3);
        default:
            break;
        }
    }
}

void acpi_pm1_cnt_update(ACPIPM1CNT *pm1_cnt,
                         bool sci_enable, bool sci_disable)
{
    /* ACPI specs 3.0, 4.7.2.5 */
    if (sci_enable) {
        pm1_cnt->cnt |= ACPI_BITMASK_SCI_ENABLE;
    } else if (sci_disable) {
        pm1_cnt->cnt &= ~ACPI_BITMASK_SCI_ENABLE;
    }
}

void acpi_pm1_cnt_reset(ACPIPM1CNT *pm1_cnt)
{
    pm1_cnt->cnt = 0;
    if (pm1_cnt->cmos_s3) {
        qemu_irq_lower(pm1_cnt->cmos_s3);
    }
}

/* ACPI GPE */
void acpi_gpe_init(ACPIGPE *gpe, uint8_t len)
{
    gpe->len = len;
    gpe->sts = qemu_mallocz(len / 2);
    gpe->en = qemu_mallocz(len / 2);
}

void acpi_gpe_blk(ACPIGPE *gpe, uint32_t blk)
{
    gpe->blk = blk;
}

void acpi_gpe_reset(ACPIGPE *gpe)
{
    memset(gpe->sts, 0, gpe->len / 2);
    memset(gpe->en, 0, gpe->len / 2);
}

static uint8_t *acpi_gpe_ioport_get_ptr(ACPIGPE *gpe, uint32_t addr)
{
    uint8_t *cur = NULL;

    if (addr < gpe->len / 2) {
        cur = gpe->sts + addr;
    } else if (addr < gpe->len) {
        cur = gpe->en + addr - gpe->len / 2;
    } else {
        abort();
    }

    return cur;
}

void acpi_gpe_ioport_writeb(ACPIGPE *gpe, uint32_t addr, uint32_t val)
{
    uint8_t *cur;

    addr -= gpe->blk;
    cur = acpi_gpe_ioport_get_ptr(gpe, addr);
    if (addr < gpe->len / 2) {
        /* GPE_STS */
        *cur = (*cur) & ~val;
    } else if (addr < gpe->len) {
        /* GPE_EN */
        *cur = val;
    } else {
        abort();
    }
}

uint32_t acpi_gpe_ioport_readb(ACPIGPE *gpe, uint32_t addr)
{
    uint8_t *cur;
    uint32_t val;

    addr -= gpe->blk;
    cur = acpi_gpe_ioport_get_ptr(gpe, addr);
    val = 0;
    if (cur != NULL) {
        val = *cur;
    }

    return val;
}
Commit	Line	Data
6515b203 FB	1	/*
6515b203 FB	2	* ACPI implementation
5fafdf24	3	*
6515b203	4	* Copyright (c) 2006 Fabrice Bellard
5fafdf24	5	*
6515b203 FB	6	* 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
8167ee88	16	* License along with this library; if not, see <http://www.gnu.org/licenses/>
6515b203	17	*/
04dc308f	18	#include "sysemu.h"
87ecb68b PB	19	#include "hw.h"
87ecb68b PB	20	#include "pc.h"
990b150e	21	#include "acpi.h"
6515b203	22
8a92ea2f AL	23	struct acpi_table_header
	24	{
	25	char signature [4]; /* ACPI signature (4 ASCII characters) */
	26	uint32_t length; /* Length of table, in bytes, including header */
	27	uint8_t revision; /* ACPI Specification minor version # */
	28	uint8_t checksum; /* To make sum of entire table == 0 */
	29	char oem_id [6]; /* OEM identification */
	30	char oem_table_id [8]; /* OEM table identification */
	31	uint32_t oem_revision; /* OEM revision number */
	32	char asl_compiler_id [4]; /* ASL compiler vendor ID */
	33	uint32_t asl_compiler_revision; /* ASL compiler revision number */
	34	} __attribute__((packed));
	35
	36	char *acpi_tables;
	37	size_t acpi_tables_len;
	38
	39	static int acpi_checksum(const uint8_t *data, int len)
	40	{
	41	int sum, i;
	42	sum = 0;
	43	for(i = 0; i < len; i++)
	44	sum += data[i];
	45	return (-sum) & 0xff;
	46	}
	47
	48	int acpi_table_add(const char *t)
	49	{
	50	static const char *dfl_id = "QEMUQEMU";
	51	char buf[1024], p, f;
	52	struct acpi_table_header acpi_hdr;
	53	unsigned long val;
d729bb9a IY	54	uint32_t length;
d729bb9a IY	55	struct acpi_table_header *acpi_hdr_p;
8a92ea2f AL	56	size_t off;
	57
	58	memset(&acpi_hdr, 0, sizeof(acpi_hdr));
	59
	60	if (get_param_value(buf, sizeof(buf), "sig", t)) {
	61	strncpy(acpi_hdr.signature, buf, 4);
	62	} else {
	63	strncpy(acpi_hdr.signature, dfl_id, 4);
	64	}
	65	if (get_param_value(buf, sizeof(buf), "rev", t)) {
	66	val = strtoul(buf, &p, 10);
	67	if (val > 255 \|\| *p != '\0')
	68	goto out;
	69	} else {
	70	val = 1;
	71	}
	72	acpi_hdr.revision = (int8_t)val;
	73
	74	if (get_param_value(buf, sizeof(buf), "oem_id", t)) {
	75	strncpy(acpi_hdr.oem_id, buf, 6);
	76	} else {
	77	strncpy(acpi_hdr.oem_id, dfl_id, 6);
	78	}
	79
	80	if (get_param_value(buf, sizeof(buf), "oem_table_id", t)) {
	81	strncpy(acpi_hdr.oem_table_id, buf, 8);
	82	} else {
	83	strncpy(acpi_hdr.oem_table_id, dfl_id, 8);
	84	}
	85
	86	if (get_param_value(buf, sizeof(buf), "oem_rev", t)) {
	87	val = strtol(buf, &p, 10);
	88	if(*p != '\0')
	89	goto out;
	90	} else {
	91	val = 1;
	92	}
	93	acpi_hdr.oem_revision = cpu_to_le32(val);
	94
	95	if (get_param_value(buf, sizeof(buf), "asl_compiler_id", t)) {
	96	strncpy(acpi_hdr.asl_compiler_id, buf, 4);
	97	} else {
	98	strncpy(acpi_hdr.asl_compiler_id, dfl_id, 4);
	99	}
	100
	101	if (get_param_value(buf, sizeof(buf), "asl_compiler_rev", t)) {
	102	val = strtol(buf, &p, 10);
	103	if(*p != '\0')
	104	goto out;
	105	} else {
	106	val = 1;
	107	}
	108	acpi_hdr.asl_compiler_revision = cpu_to_le32(val);
	109
	110	if (!get_param_value(buf, sizeof(buf), "data", t)) {
	111	buf[0] = '\0';
	112	}
	113
d729bb9a	114	length = sizeof(acpi_hdr);
8a92ea2f AL	115
	116	f = buf;
	117	while (buf[0]) {
	118	struct stat s;
54042bcf	119	char *n = strchr(f, ':');
8a92ea2f AL	120	if (n)
	121	*n = '\0';
	122	if(stat(f, &s) < 0) {
	123	fprintf(stderr, "Can't stat file '%s': %s\n", f, strerror(errno));
	124	goto out;
	125	}
d729bb9a	126	length += s.st_size;
8a92ea2f AL	127	if (!n)
	128	break;
	129	*n = ':';
	130	f = n + 1;
	131	}
	132
	133	if (!acpi_tables) {
	134	acpi_tables_len = sizeof(uint16_t);
	135	acpi_tables = qemu_mallocz(acpi_tables_len);
	136	}
d729bb9a IY	137	acpi_tables = qemu_realloc(acpi_tables,
d729bb9a IY	138	acpi_tables_len + sizeof(uint16_t) + length);
8a92ea2f	139	p = acpi_tables + acpi_tables_len;
d729bb9a	140	acpi_tables_len += sizeof(uint16_t) + length;
8a92ea2f	141
d729bb9a	142	(uint16_t)p = cpu_to_le32(length);
8a92ea2f AL	143	p += sizeof(uint16_t);
	144	memcpy(p, &acpi_hdr, sizeof(acpi_hdr));
	145	off = sizeof(acpi_hdr);
	146
	147	f = buf;
	148	while (buf[0]) {
	149	struct stat s;
	150	int fd;
54042bcf	151	char *n = strchr(f, ':');
8a92ea2f AL	152	if (n)
	153	*n = '\0';
	154	fd = open(f, O_RDONLY);
	155
	156	if(fd < 0)
	157	goto out;
	158	if(fstat(fd, &s) < 0) {
	159	close(fd);
	160	goto out;
	161	}
	162
d729bb9a IY	163	/* off < length is necessary because file size can be changed
d729bb9a IY	164	under our foot */
b755a428	165	while(s.st_size && off < length) {
8a92ea2f AL	166	int r;
	167	r = read(fd, p + off, s.st_size);
	168	if (r > 0) {
	169	off += r;
	170	s.st_size -= r;
	171	} else if ((r < 0 && errno != EINTR) \|\| r == 0) {
	172	close(fd);
	173	goto out;
	174	}
d729bb9a	175	}
8a92ea2f AL	176
	177	close(fd);
	178	if (!n)
	179	break;
	180	f = n + 1;
	181	}
d729bb9a IY	182	if (off < length) {
	183	/* don't pass random value in process to guest */
	184	memset(p + off, 0, length - off);
	185	}
8a92ea2f	186
d729bb9a IY	187	acpi_hdr_p = (struct acpi_table_header*)p;
	188	acpi_hdr_p->length = cpu_to_le32(length);
	189	acpi_hdr_p->checksum = acpi_checksum((uint8_t*)p, length);
8a92ea2f AL	190	/* increase number of tables */
	191	((uint16_t)acpi_tables) =
	192	cpu_to_le32(le32_to_cpu((uint16_t)acpi_tables) + 1);
	193	return 0;
	194	out:
	195	if (acpi_tables) {
b2538b4b	196	qemu_free(acpi_tables);
8a92ea2f AL	197	acpi_tables = NULL;
	198	}
	199	return -1;
	200	}
a54d41a8	201
04dc308f IY	202	/* ACPI PM1a EVT */
	203	uint16_t acpi_pm1_evt_get_sts(ACPIPM1EVT *pm1, int64_t overflow_time)
	204	{
	205	int64_t d = acpi_pm_tmr_get_clock();
	206	if (d >= overflow_time) {
	207	pm1->sts \|= ACPI_BITMASK_TIMER_STATUS;
	208	}
	209	return pm1->sts;
	210	}
	211
	212	void acpi_pm1_evt_write_sts(ACPIPM1EVT pm1, ACPIPMTimer tmr, uint16_t val)
	213	{
	214	uint16_t pm1_sts = acpi_pm1_evt_get_sts(pm1, tmr->overflow_time);
	215	if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
	216	/* if TMRSTS is reset, then compute the new overflow time */
	217	acpi_pm_tmr_calc_overflow_time(tmr);
	218	}
	219	pm1->sts &= ~val;
	220	}
	221
	222	void acpi_pm1_evt_power_down(ACPIPM1EVT pm1, ACPIPMTimer tmr)
	223	{
	224	if (!pm1) {
	225	qemu_system_shutdown_request();
	226	} else if (pm1->en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
	227	pm1->sts \|= ACPI_BITMASK_POWER_BUTTON_STATUS;
	228	tmr->update_sci(tmr);
	229	}
	230	}
	231
	232	void acpi_pm1_evt_reset(ACPIPM1EVT *pm1)
	233	{
	234	pm1->sts = 0;
	235	pm1->en = 0;
	236	}
	237
a54d41a8 IY	238	/* ACPI PM_TMR */
	239	void acpi_pm_tmr_update(ACPIPMTimer *tmr, bool enable)
	240	{
	241	int64_t expire_time;
	242
	243	/* schedule a timer interruption if needed */
	244	if (enable) {
	245	expire_time = muldiv64(tmr->overflow_time, get_ticks_per_sec(),
	246	PM_TIMER_FREQUENCY);
	247	qemu_mod_timer(tmr->timer, expire_time);
	248	} else {
	249	qemu_del_timer(tmr->timer);
	250	}
	251	}
	252
	253	void acpi_pm_tmr_calc_overflow_time(ACPIPMTimer *tmr)
	254	{
	255	int64_t d = acpi_pm_tmr_get_clock();
	256	tmr->overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
	257	}
	258
	259	uint32_t acpi_pm_tmr_get(ACPIPMTimer *tmr)
	260	{
	261	uint32_t d = acpi_pm_tmr_get_clock();;
	262	return d & 0xffffff;
	263	}
	264
	265	static void acpi_pm_tmr_timer(void *opaque)
	266	{
	267	ACPIPMTimer *tmr = opaque;
	268	tmr->update_sci(tmr);
	269	}
	270
	271	void acpi_pm_tmr_init(ACPIPMTimer *tmr, acpi_update_sci_fn update_sci)
	272	{
	273	tmr->update_sci = update_sci;
	274	tmr->timer = qemu_new_timer_ns(vm_clock, acpi_pm_tmr_timer, tmr);
	275	}
	276
	277	void acpi_pm_tmr_reset(ACPIPMTimer *tmr)
	278	{
	279	tmr->overflow_time = 0;
	280	qemu_del_timer(tmr->timer);
	281	}
eaba51c5 IY	282
	283	/* ACPI PM1aCNT */
	284	void acpi_pm1_cnt_init(ACPIPM1CNT *pm1_cnt, qemu_irq cmos_s3)
	285	{
	286	pm1_cnt->cmos_s3 = cmos_s3;
	287	}
	288
	289	void acpi_pm1_cnt_write(ACPIPM1EVT pm1a, ACPIPM1CNT pm1_cnt, uint16_t val)
	290	{
	291	pm1_cnt->cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);
	292
	293	if (val & ACPI_BITMASK_SLEEP_ENABLE) {
	294	/* change suspend type */
	295	uint16_t sus_typ = (val >> 10) & 7;
	296	switch(sus_typ) {
	297	case 0: /* soft power off */
	298	qemu_system_shutdown_request();
	299	break;
	300	case 1:
	301	/* ACPI_BITMASK_WAKE_STATUS should be set on resume.
	302	Pretend that resume was caused by power button */
	303	pm1a->sts \|=
	304	(ACPI_BITMASK_WAKE_STATUS \| ACPI_BITMASK_POWER_BUTTON_STATUS);
	305	qemu_system_reset_request();
	306	qemu_irq_raise(pm1_cnt->cmos_s3);
	307	default:
	308	break;
	309	}
	310	}
	311	}
	312
	313	void acpi_pm1_cnt_update(ACPIPM1CNT *pm1_cnt,
	314	bool sci_enable, bool sci_disable)
	315	{
	316	/* ACPI specs 3.0, 4.7.2.5 */
	317	if (sci_enable) {
	318	pm1_cnt->cnt \|= ACPI_BITMASK_SCI_ENABLE;
	319	} else if (sci_disable) {
	320	pm1_cnt->cnt &= ~ACPI_BITMASK_SCI_ENABLE;
	321	}
	322	}
	323
	324	void acpi_pm1_cnt_reset(ACPIPM1CNT *pm1_cnt)
	325	{
	326	pm1_cnt->cnt = 0;
	327	if (pm1_cnt->cmos_s3) {
	328	qemu_irq_lower(pm1_cnt->cmos_s3);
	329	}
	330	}
23910d3f IY	331
	332	/* ACPI GPE */
	333	void acpi_gpe_init(ACPIGPE *gpe, uint8_t len)
	334	{
	335	gpe->len = len;
	336	gpe->sts = qemu_mallocz(len / 2);
	337	gpe->en = qemu_mallocz(len / 2);
	338	}
	339
	340	void acpi_gpe_blk(ACPIGPE *gpe, uint32_t blk)
	341	{
	342	gpe->blk = blk;
	343	}
	344
	345	void acpi_gpe_reset(ACPIGPE *gpe)
	346	{
	347	memset(gpe->sts, 0, gpe->len / 2);
	348	memset(gpe->en, 0, gpe->len / 2);
	349	}
	350
	351	static uint8_t acpi_gpe_ioport_get_ptr(ACPIGPE gpe, uint32_t addr)
	352	{
	353	uint8_t *cur = NULL;
	354
	355	if (addr < gpe->len / 2) {
	356	cur = gpe->sts + addr;
	357	} else if (addr < gpe->len) {
54f8e61d	358	cur = gpe->en + addr - gpe->len / 2;
23910d3f IY	359	} else {
	360	abort();
	361	}
	362
	363	return cur;
	364	}
	365
	366	void acpi_gpe_ioport_writeb(ACPIGPE *gpe, uint32_t addr, uint32_t val)
	367	{
	368	uint8_t *cur;
	369
	370	addr -= gpe->blk;
	371	cur = acpi_gpe_ioport_get_ptr(gpe, addr);
	372	if (addr < gpe->len / 2) {
	373	/* GPE_STS */
	374	cur = (cur) & ~val;
	375	} else if (addr < gpe->len) {
	376	/* GPE_EN */
	377	*cur = val;
	378	} else {
	379	abort();
	380	}
	381	}
	382
	383	uint32_t acpi_gpe_ioport_readb(ACPIGPE *gpe, uint32_t addr)
	384	{
	385	uint8_t *cur;
	386	uint32_t val;
	387
	388	addr -= gpe->blk;
	389	cur = acpi_gpe_ioport_get_ptr(gpe, addr);
	390	val = 0;
	391	if (cur != NULL) {
	392	val = *cur;
	393	}
	394
	395	return val;
	396	}